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authormarkm <markm@FreeBSD.org>1997-09-04 06:11:16 +0000
committermarkm <markm@FreeBSD.org>1997-09-04 06:11:16 +0000
commita9e6ba3f81bf9daf246d3fa948bc174190bd15dc (patch)
tree081b7e52d5745c9a970536ccf536dfc1dc9f2402 /contrib
downloadFreeBSD-src-a9e6ba3f81bf9daf246d3fa948bc174190bd15dc.zip
FreeBSD-src-a9e6ba3f81bf9daf246d3fa948bc174190bd15dc.tar.gz
Initial import of BSD telnet. This will be used to build the kerberised
telnet, and after userland diffs have been merged in, will be used to build the non-kerberised sources as well. (See unifdef(1) for details)
Diffstat (limited to 'contrib')
-rw-r--r--contrib/telnet/arpa/telnet.h320
-rw-r--r--contrib/telnet/libtelnet/auth-proto.h96
-rw-r--r--contrib/telnet/libtelnet/auth.c671
-rw-r--r--contrib/telnet/libtelnet/auth.h87
-rw-r--r--contrib/telnet/libtelnet/enc-proto.h125
-rw-r--r--contrib/telnet/libtelnet/enc_des.c724
-rw-r--r--contrib/telnet/libtelnet/encrypt.c1000
-rw-r--r--contrib/telnet/libtelnet/encrypt.h108
-rw-r--r--contrib/telnet/libtelnet/genget.c105
-rw-r--r--contrib/telnet/libtelnet/getent.c68
-rw-r--r--contrib/telnet/libtelnet/kerberos.c560
-rw-r--r--contrib/telnet/libtelnet/kerberos5.c764
-rw-r--r--contrib/telnet/libtelnet/key-proto.h71
-rw-r--r--contrib/telnet/libtelnet/krb4encpwd.c446
-rw-r--r--contrib/telnet/libtelnet/misc-proto.h79
-rw-r--r--contrib/telnet/libtelnet/misc.c94
-rw-r--r--contrib/telnet/libtelnet/misc.h42
-rw-r--r--contrib/telnet/libtelnet/read_password.c145
-rw-r--r--contrib/telnet/libtelnet/rsaencpwd.c492
-rw-r--r--contrib/telnet/libtelnet/spx.c588
-rw-r--r--contrib/telnet/telnet/authenc.c111
-rw-r--r--contrib/telnet/telnet/commands.c2945
-rw-r--r--contrib/telnet/telnet/defines.h61
-rw-r--r--contrib/telnet/telnet/externs.h482
-rw-r--r--contrib/telnet/telnet/fdset.h49
-rw-r--r--contrib/telnet/telnet/general.h45
-rw-r--r--contrib/telnet/telnet/main.c322
-rw-r--r--contrib/telnet/telnet/network.c177
-rw-r--r--contrib/telnet/telnet/ring.c362
-rw-r--r--contrib/telnet/telnet/ring.h105
-rw-r--r--contrib/telnet/telnet/sys_bsd.c1220
-rw-r--r--contrib/telnet/telnet/telnet.11366
-rw-r--r--contrib/telnet/telnet/telnet.c2650
-rw-r--r--contrib/telnet/telnet/terminal.c240
-rw-r--r--contrib/telnet/telnet/tn3270.c411
-rw-r--r--contrib/telnet/telnet/types.h52
-rw-r--r--contrib/telnet/telnet/utilities.c939
-rw-r--r--contrib/telnet/telnetd/authenc.c91
-rw-r--r--contrib/telnet/telnetd/defs.h296
-rw-r--r--contrib/telnet/telnetd/ext.h240
-rw-r--r--contrib/telnet/telnetd/global.c48
-rw-r--r--contrib/telnet/telnetd/pathnames.h55
-rw-r--r--contrib/telnet/telnetd/slc.c491
-rw-r--r--contrib/telnet/telnetd/state.c1612
-rw-r--r--contrib/telnet/telnetd/sys_term.c2303
-rw-r--r--contrib/telnet/telnetd/telnetd.8607
-rw-r--r--contrib/telnet/telnetd/telnetd.c1608
-rw-r--r--contrib/telnet/telnetd/telnetd.h49
-rw-r--r--contrib/telnet/telnetd/termstat.c660
-rw-r--r--contrib/telnet/telnetd/utility.c1192
50 files changed, 27374 insertions, 0 deletions
diff --git a/contrib/telnet/arpa/telnet.h b/contrib/telnet/arpa/telnet.h
new file mode 100644
index 0000000..10155a8
--- /dev/null
+++ b/contrib/telnet/arpa/telnet.h
@@ -0,0 +1,320 @@
+/*
+ * Copyright (c) 1983, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)telnet.h 8.2 (Berkeley) 12/15/93
+ */
+
+#ifndef _TELNET_H_
+#define _TELNET_H_
+
+/*
+ * Definitions for the TELNET protocol.
+ */
+#define IAC 255 /* interpret as command: */
+#define DONT 254 /* you are not to use option */
+#define DO 253 /* please, you use option */
+#define WONT 252 /* I won't use option */
+#define WILL 251 /* I will use option */
+#define SB 250 /* interpret as subnegotiation */
+#define GA 249 /* you may reverse the line */
+#define EL 248 /* erase the current line */
+#define EC 247 /* erase the current character */
+#define AYT 246 /* are you there */
+#define AO 245 /* abort output--but let prog finish */
+#define IP 244 /* interrupt process--permanently */
+#define BREAK 243 /* break */
+#define DM 242 /* data mark--for connect. cleaning */
+#define NOP 241 /* nop */
+#define SE 240 /* end sub negotiation */
+#define EOR 239 /* end of record (transparent mode) */
+#define ABORT 238 /* Abort process */
+#define SUSP 237 /* Suspend process */
+#define xEOF 236 /* End of file: EOF is already used... */
+
+#define SYNCH 242 /* for telfunc calls */
+
+#ifdef TELCMDS
+char *telcmds[] = {
+ "EOF", "SUSP", "ABORT", "EOR",
+ "SE", "NOP", "DMARK", "BRK", "IP", "AO", "AYT", "EC",
+ "EL", "GA", "SB", "WILL", "WONT", "DO", "DONT", "IAC", 0,
+};
+#else
+extern char *telcmds[];
+#endif
+
+#define TELCMD_FIRST xEOF
+#define TELCMD_LAST IAC
+#define TELCMD_OK(x) ((unsigned int)(x) <= TELCMD_LAST && \
+ (unsigned int)(x) >= TELCMD_FIRST)
+#define TELCMD(x) telcmds[(x)-TELCMD_FIRST]
+
+/* telnet options */
+#define TELOPT_BINARY 0 /* 8-bit data path */
+#define TELOPT_ECHO 1 /* echo */
+#define TELOPT_RCP 2 /* prepare to reconnect */
+#define TELOPT_SGA 3 /* suppress go ahead */
+#define TELOPT_NAMS 4 /* approximate message size */
+#define TELOPT_STATUS 5 /* give status */
+#define TELOPT_TM 6 /* timing mark */
+#define TELOPT_RCTE 7 /* remote controlled transmission and echo */
+#define TELOPT_NAOL 8 /* negotiate about output line width */
+#define TELOPT_NAOP 9 /* negotiate about output page size */
+#define TELOPT_NAOCRD 10 /* negotiate about CR disposition */
+#define TELOPT_NAOHTS 11 /* negotiate about horizontal tabstops */
+#define TELOPT_NAOHTD 12 /* negotiate about horizontal tab disposition */
+#define TELOPT_NAOFFD 13 /* negotiate about formfeed disposition */
+#define TELOPT_NAOVTS 14 /* negotiate about vertical tab stops */
+#define TELOPT_NAOVTD 15 /* negotiate about vertical tab disposition */
+#define TELOPT_NAOLFD 16 /* negotiate about output LF disposition */
+#define TELOPT_XASCII 17 /* extended ascic character set */
+#define TELOPT_LOGOUT 18 /* force logout */
+#define TELOPT_BM 19 /* byte macro */
+#define TELOPT_DET 20 /* data entry terminal */
+#define TELOPT_SUPDUP 21 /* supdup protocol */
+#define TELOPT_SUPDUPOUTPUT 22 /* supdup output */
+#define TELOPT_SNDLOC 23 /* send location */
+#define TELOPT_TTYPE 24 /* terminal type */
+#define TELOPT_EOR 25 /* end or record */
+#define TELOPT_TUID 26 /* TACACS user identification */
+#define TELOPT_OUTMRK 27 /* output marking */
+#define TELOPT_TTYLOC 28 /* terminal location number */
+#define TELOPT_3270REGIME 29 /* 3270 regime */
+#define TELOPT_X3PAD 30 /* X.3 PAD */
+#define TELOPT_NAWS 31 /* window size */
+#define TELOPT_TSPEED 32 /* terminal speed */
+#define TELOPT_LFLOW 33 /* remote flow control */
+#define TELOPT_LINEMODE 34 /* Linemode option */
+#define TELOPT_XDISPLOC 35 /* X Display Location */
+#define TELOPT_OLD_ENVIRON 36 /* Old - Environment variables */
+#define TELOPT_AUTHENTICATION 37/* Authenticate */
+#define TELOPT_ENCRYPT 38 /* Encryption option */
+#define TELOPT_NEW_ENVIRON 39 /* New - Environment variables */
+#define TELOPT_EXOPL 255 /* extended-options-list */
+
+
+#define NTELOPTS (1+TELOPT_NEW_ENVIRON)
+#ifdef TELOPTS
+char *telopts[NTELOPTS+1] = {
+ "BINARY", "ECHO", "RCP", "SUPPRESS GO AHEAD", "NAME",
+ "STATUS", "TIMING MARK", "RCTE", "NAOL", "NAOP",
+ "NAOCRD", "NAOHTS", "NAOHTD", "NAOFFD", "NAOVTS",
+ "NAOVTD", "NAOLFD", "EXTEND ASCII", "LOGOUT", "BYTE MACRO",
+ "DATA ENTRY TERMINAL", "SUPDUP", "SUPDUP OUTPUT",
+ "SEND LOCATION", "TERMINAL TYPE", "END OF RECORD",
+ "TACACS UID", "OUTPUT MARKING", "TTYLOC",
+ "3270 REGIME", "X.3 PAD", "NAWS", "TSPEED", "LFLOW",
+ "LINEMODE", "XDISPLOC", "OLD-ENVIRON", "AUTHENTICATION",
+ "ENCRYPT", "NEW-ENVIRON",
+ 0,
+};
+#define TELOPT_FIRST TELOPT_BINARY
+#define TELOPT_LAST TELOPT_NEW_ENVIRON
+#define TELOPT_OK(x) ((unsigned int)(x) <= TELOPT_LAST)
+#define TELOPT(x) telopts[(x)-TELOPT_FIRST]
+#endif
+
+/* sub-option qualifiers */
+#define TELQUAL_IS 0 /* option is... */
+#define TELQUAL_SEND 1 /* send option */
+#define TELQUAL_INFO 2 /* ENVIRON: informational version of IS */
+#define TELQUAL_REPLY 2 /* AUTHENTICATION: client version of IS */
+#define TELQUAL_NAME 3 /* AUTHENTICATION: client version of IS */
+
+#define LFLOW_OFF 0 /* Disable remote flow control */
+#define LFLOW_ON 1 /* Enable remote flow control */
+#define LFLOW_RESTART_ANY 2 /* Restart output on any char */
+#define LFLOW_RESTART_XON 3 /* Restart output only on XON */
+
+/*
+ * LINEMODE suboptions
+ */
+
+#define LM_MODE 1
+#define LM_FORWARDMASK 2
+#define LM_SLC 3
+
+#define MODE_EDIT 0x01
+#define MODE_TRAPSIG 0x02
+#define MODE_ACK 0x04
+#define MODE_SOFT_TAB 0x08
+#define MODE_LIT_ECHO 0x10
+
+#define MODE_MASK 0x1f
+
+/* Not part of protocol, but needed to simplify things... */
+#define MODE_FLOW 0x0100
+#define MODE_ECHO 0x0200
+#define MODE_INBIN 0x0400
+#define MODE_OUTBIN 0x0800
+#define MODE_FORCE 0x1000
+
+#define SLC_SYNCH 1
+#define SLC_BRK 2
+#define SLC_IP 3
+#define SLC_AO 4
+#define SLC_AYT 5
+#define SLC_EOR 6
+#define SLC_ABORT 7
+#define SLC_EOF 8
+#define SLC_SUSP 9
+#define SLC_EC 10
+#define SLC_EL 11
+#define SLC_EW 12
+#define SLC_RP 13
+#define SLC_LNEXT 14
+#define SLC_XON 15
+#define SLC_XOFF 16
+#define SLC_FORW1 17
+#define SLC_FORW2 18
+
+#define NSLC 18
+
+/*
+ * For backwards compatability, we define SLC_NAMES to be the
+ * list of names if SLC_NAMES is not defined.
+ */
+#define SLC_NAMELIST "0", "SYNCH", "BRK", "IP", "AO", "AYT", "EOR", \
+ "ABORT", "EOF", "SUSP", "EC", "EL", "EW", "RP", \
+ "LNEXT", "XON", "XOFF", "FORW1", "FORW2", 0,
+#ifdef SLC_NAMES
+char *slc_names[] = {
+ SLC_NAMELIST
+};
+#else
+extern char *slc_names[];
+#define SLC_NAMES SLC_NAMELIST
+#endif
+
+#define SLC_NAME_OK(x) ((unsigned int)(x) <= NSLC)
+#define SLC_NAME(x) slc_names[x]
+
+#define SLC_NOSUPPORT 0
+#define SLC_CANTCHANGE 1
+#define SLC_VARIABLE 2
+#define SLC_DEFAULT 3
+#define SLC_LEVELBITS 0x03
+
+#define SLC_FUNC 0
+#define SLC_FLAGS 1
+#define SLC_VALUE 2
+
+#define SLC_ACK 0x80
+#define SLC_FLUSHIN 0x40
+#define SLC_FLUSHOUT 0x20
+
+#define OLD_ENV_VAR 1
+#define OLD_ENV_VALUE 0
+#define NEW_ENV_VAR 0
+#define NEW_ENV_VALUE 1
+#define ENV_ESC 2
+#define ENV_USERVAR 3
+
+/*
+ * AUTHENTICATION suboptions
+ */
+
+/*
+ * Who is authenticating who ...
+ */
+#define AUTH_WHO_CLIENT 0 /* Client authenticating server */
+#define AUTH_WHO_SERVER 1 /* Server authenticating client */
+#define AUTH_WHO_MASK 1
+
+/*
+ * amount of authentication done
+ */
+#define AUTH_HOW_ONE_WAY 0
+#define AUTH_HOW_MUTUAL 2
+#define AUTH_HOW_MASK 2
+
+#define AUTHTYPE_NULL 0
+#define AUTHTYPE_KERBEROS_V4 1
+#define AUTHTYPE_KERBEROS_V5 2
+#define AUTHTYPE_SPX 3
+#define AUTHTYPE_MINK 4
+#define AUTHTYPE_CNT 5
+
+#define AUTHTYPE_TEST 99
+
+#ifdef AUTH_NAMES
+char *authtype_names[] = {
+ "NULL", "KERBEROS_V4", "KERBEROS_V5", "SPX", "MINK", 0,
+};
+#else
+extern char *authtype_names[];
+#endif
+
+#define AUTHTYPE_NAME_OK(x) ((unsigned int)(x) < AUTHTYPE_CNT)
+#define AUTHTYPE_NAME(x) authtype_names[x]
+
+/*
+ * ENCRYPTion suboptions
+ */
+#define ENCRYPT_IS 0 /* I pick encryption type ... */
+#define ENCRYPT_SUPPORT 1 /* I support encryption types ... */
+#define ENCRYPT_REPLY 2 /* Initial setup response */
+#define ENCRYPT_START 3 /* Am starting to send encrypted */
+#define ENCRYPT_END 4 /* Am ending encrypted */
+#define ENCRYPT_REQSTART 5 /* Request you start encrypting */
+#define ENCRYPT_REQEND 6 /* Request you send encrypting */
+#define ENCRYPT_ENC_KEYID 7
+#define ENCRYPT_DEC_KEYID 8
+#define ENCRYPT_CNT 9
+
+#define ENCTYPE_ANY 0
+#define ENCTYPE_DES_CFB64 1
+#define ENCTYPE_DES_OFB64 2
+#define ENCTYPE_CNT 3
+
+#ifdef ENCRYPT_NAMES
+char *encrypt_names[] = {
+ "IS", "SUPPORT", "REPLY", "START", "END",
+ "REQUEST-START", "REQUEST-END", "ENC-KEYID", "DEC-KEYID",
+ 0,
+};
+char *enctype_names[] = {
+ "ANY", "DES_CFB64", "DES_OFB64", 0,
+};
+#else
+extern char *encrypt_names[];
+extern char *enctype_names[];
+#endif
+
+
+#define ENCRYPT_NAME_OK(x) ((unsigned int)(x) < ENCRYPT_CNT)
+#define ENCRYPT_NAME(x) encrypt_names[x]
+
+#define ENCTYPE_NAME_OK(x) ((unsigned int)(x) < ENCTYPE_CNT)
+#define ENCTYPE_NAME(x) enctype_names[x]
+
+#endif /* !_TELNET_H_ */
diff --git a/contrib/telnet/libtelnet/auth-proto.h b/contrib/telnet/libtelnet/auth-proto.h
new file mode 100644
index 0000000..06bba2b
--- /dev/null
+++ b/contrib/telnet/libtelnet/auth-proto.h
@@ -0,0 +1,96 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)auth-proto.h 8.1 (Berkeley) 6/4/93
+ */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#if !defined(P)
+#ifdef __STDC__
+#define P(x) x
+#else
+#define P(x) ()
+#endif
+#endif
+
+#if defined(AUTHENTICATION)
+Authenticator *findauthenticator P((int, int));
+
+void auth_init P((char *, int));
+int auth_cmd P((int, char **));
+void auth_request P((void));
+void auth_send P((unsigned char *, int));
+void auth_send_retry P((void));
+void auth_is P((unsigned char *, int));
+void auth_reply P((unsigned char *, int));
+void auth_finished P((Authenticator *, int));
+int auth_wait P((char *));
+void auth_disable_name P((char *));
+void auth_gen_printsub P((unsigned char *, int, unsigned char *, int));
+
+#ifdef KRB4
+int kerberos4_init P((Authenticator *, int));
+int kerberos4_send P((Authenticator *));
+void kerberos4_is P((Authenticator *, unsigned char *, int));
+void kerberos4_reply P((Authenticator *, unsigned char *, int));
+int kerberos4_status P((Authenticator *, char *, int));
+void kerberos4_printsub P((unsigned char *, int, unsigned char *, int));
+#endif
+
+#ifdef KRB5
+int kerberos5_init P((Authenticator *, int));
+int kerberos5_send P((Authenticator *));
+void kerberos5_is P((Authenticator *, unsigned char *, int));
+void kerberos5_reply P((Authenticator *, unsigned char *, int));
+int kerberos5_status P((Authenticator *, char *, int));
+void kerberos5_printsub P((unsigned char *, int, unsigned char *, int));
+#endif
+#endif
diff --git a/contrib/telnet/libtelnet/auth.c b/contrib/telnet/libtelnet/auth.c
new file mode 100644
index 0000000..a8b287c
--- /dev/null
+++ b/contrib/telnet/libtelnet/auth.c
@@ -0,0 +1,671 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)auth.c 8.3 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+
+#if defined(AUTHENTICATION)
+#include <stdio.h>
+#include <sys/types.h>
+#include <signal.h>
+#define AUTH_NAMES
+#include <arpa/telnet.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+#include "encrypt.h"
+#include "auth.h"
+#include "misc-proto.h"
+#include "auth-proto.h"
+
+#define typemask(x) (1<<((x)-1))
+
+#ifdef KRB4_ENCPWD
+extern krb4encpwd_init();
+extern krb4encpwd_send();
+extern krb4encpwd_is();
+extern krb4encpwd_reply();
+extern krb4encpwd_status();
+extern krb4encpwd_printsub();
+#endif
+
+#ifdef RSA_ENCPWD
+extern rsaencpwd_init();
+extern rsaencpwd_send();
+extern rsaencpwd_is();
+extern rsaencpwd_reply();
+extern rsaencpwd_status();
+extern rsaencpwd_printsub();
+#endif
+
+int auth_debug_mode = 0;
+static char *Name = "Noname";
+static int Server = 0;
+static Authenticator *authenticated = 0;
+static int authenticating = 0;
+static int validuser = 0;
+static unsigned char _auth_send_data[256];
+static unsigned char *auth_send_data;
+static int auth_send_cnt = 0;
+
+/*
+ * Authentication types supported. Plese note that these are stored
+ * in priority order, i.e. try the first one first.
+ */
+Authenticator authenticators[] = {
+#ifdef SPX
+ { AUTHTYPE_SPX, AUTH_WHO_CLIENT|AUTH_HOW_MUTUAL,
+ spx_init,
+ spx_send,
+ spx_is,
+ spx_reply,
+ spx_status,
+ spx_printsub },
+ { AUTHTYPE_SPX, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY,
+ spx_init,
+ spx_send,
+ spx_is,
+ spx_reply,
+ spx_status,
+ spx_printsub },
+#endif
+#ifdef KRB5
+# ifdef ENCRYPTION
+ { AUTHTYPE_KERBEROS_V5, AUTH_WHO_CLIENT|AUTH_HOW_MUTUAL,
+ kerberos5_init,
+ kerberos5_send,
+ kerberos5_is,
+ kerberos5_reply,
+ kerberos5_status,
+ kerberos5_printsub },
+# endif /* ENCRYPTION */
+ { AUTHTYPE_KERBEROS_V5, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY,
+ kerberos5_init,
+ kerberos5_send,
+ kerberos5_is,
+ kerberos5_reply,
+ kerberos5_status,
+ kerberos5_printsub },
+#endif
+#ifdef KRB4
+# ifdef ENCRYPTION
+ { AUTHTYPE_KERBEROS_V4, AUTH_WHO_CLIENT|AUTH_HOW_MUTUAL,
+ kerberos4_init,
+ kerberos4_send,
+ kerberos4_is,
+ kerberos4_reply,
+ kerberos4_status,
+ kerberos4_printsub },
+# endif /* ENCRYPTION */
+ { AUTHTYPE_KERBEROS_V4, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY,
+ kerberos4_init,
+ kerberos4_send,
+ kerberos4_is,
+ kerberos4_reply,
+ kerberos4_status,
+ kerberos4_printsub },
+#endif
+#ifdef KRB4_ENCPWD
+ { AUTHTYPE_KRB4_ENCPWD, AUTH_WHO_CLIENT|AUTH_HOW_MUTUAL,
+ krb4encpwd_init,
+ krb4encpwd_send,
+ krb4encpwd_is,
+ krb4encpwd_reply,
+ krb4encpwd_status,
+ krb4encpwd_printsub },
+#endif
+#ifdef RSA_ENCPWD
+ { AUTHTYPE_RSA_ENCPWD, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY,
+ rsaencpwd_init,
+ rsaencpwd_send,
+ rsaencpwd_is,
+ rsaencpwd_reply,
+ rsaencpwd_status,
+ rsaencpwd_printsub },
+#endif
+ { 0, },
+};
+
+static Authenticator NoAuth = { 0 };
+
+static int i_support = 0;
+static int i_wont_support = 0;
+
+ Authenticator *
+findauthenticator(type, way)
+ int type;
+ int way;
+{
+ Authenticator *ap = authenticators;
+
+ while (ap->type && (ap->type != type || ap->way != way))
+ ++ap;
+ return(ap->type ? ap : 0);
+}
+
+ void
+auth_init(name, server)
+ char *name;
+ int server;
+{
+ Authenticator *ap = authenticators;
+
+ Server = server;
+ Name = name;
+
+ i_support = 0;
+ authenticated = 0;
+ authenticating = 0;
+ while (ap->type) {
+ if (!ap->init || (*ap->init)(ap, server)) {
+ i_support |= typemask(ap->type);
+ if (auth_debug_mode)
+ printf(">>>%s: I support auth type %d %d\r\n",
+ Name,
+ ap->type, ap->way);
+ }
+ else if (auth_debug_mode)
+ printf(">>>%s: Init failed: auth type %d %d\r\n",
+ Name, ap->type, ap->way);
+ ++ap;
+ }
+}
+
+ void
+auth_disable_name(name)
+ char *name;
+{
+ int x;
+ for (x = 0; x < AUTHTYPE_CNT; ++x) {
+ if (!strcasecmp(name, AUTHTYPE_NAME(x))) {
+ i_wont_support |= typemask(x);
+ break;
+ }
+ }
+}
+
+ int
+getauthmask(type, maskp)
+ char *type;
+ int *maskp;
+{
+ register int x;
+
+ if (!strcasecmp(type, AUTHTYPE_NAME(0))) {
+ *maskp = -1;
+ return(1);
+ }
+
+ for (x = 1; x < AUTHTYPE_CNT; ++x) {
+ if (!strcasecmp(type, AUTHTYPE_NAME(x))) {
+ *maskp = typemask(x);
+ return(1);
+ }
+ }
+ return(0);
+}
+
+ int
+auth_enable(type)
+ char *type;
+{
+ return(auth_onoff(type, 1));
+}
+
+ int
+auth_disable(type)
+ char *type;
+{
+ return(auth_onoff(type, 0));
+}
+
+ int
+auth_onoff(type, on)
+ char *type;
+ int on;
+{
+ int i, mask = -1;
+ Authenticator *ap;
+
+ if (!strcasecmp(type, "?") || !strcasecmp(type, "help")) {
+ printf("auth %s 'type'\n", on ? "enable" : "disable");
+ printf("Where 'type' is one of:\n");
+ printf("\t%s\n", AUTHTYPE_NAME(0));
+ mask = 0;
+ for (ap = authenticators; ap->type; ap++) {
+ if ((mask & (i = typemask(ap->type))) != 0)
+ continue;
+ mask |= i;
+ printf("\t%s\n", AUTHTYPE_NAME(ap->type));
+ }
+ return(0);
+ }
+
+ if (!getauthmask(type, &mask)) {
+ printf("%s: invalid authentication type\n", type);
+ return(0);
+ }
+ if (on)
+ i_wont_support &= ~mask;
+ else
+ i_wont_support |= mask;
+ return(1);
+}
+
+ int
+auth_togdebug(on)
+ int on;
+{
+ if (on < 0)
+ auth_debug_mode ^= 1;
+ else
+ auth_debug_mode = on;
+ printf("auth debugging %s\n", auth_debug_mode ? "enabled" : "disabled");
+ return(1);
+}
+
+ int
+auth_status()
+{
+ Authenticator *ap;
+ int i, mask;
+
+ if (i_wont_support == -1)
+ printf("Authentication disabled\n");
+ else
+ printf("Authentication enabled\n");
+
+ mask = 0;
+ for (ap = authenticators; ap->type; ap++) {
+ if ((mask & (i = typemask(ap->type))) != 0)
+ continue;
+ mask |= i;
+ printf("%s: %s\n", AUTHTYPE_NAME(ap->type),
+ (i_wont_support & typemask(ap->type)) ?
+ "disabled" : "enabled");
+ }
+ return(1);
+}
+
+/*
+ * This routine is called by the server to start authentication
+ * negotiation.
+ */
+ void
+auth_request()
+{
+ static unsigned char str_request[64] = { IAC, SB,
+ TELOPT_AUTHENTICATION,
+ TELQUAL_SEND, };
+ Authenticator *ap = authenticators;
+ unsigned char *e = str_request + 4;
+
+ if (!authenticating) {
+ authenticating = 1;
+ while (ap->type) {
+ if (i_support & ~i_wont_support & typemask(ap->type)) {
+ if (auth_debug_mode) {
+ printf(">>>%s: Sending type %d %d\r\n",
+ Name, ap->type, ap->way);
+ }
+ *e++ = ap->type;
+ *e++ = ap->way;
+ }
+ ++ap;
+ }
+ *e++ = IAC;
+ *e++ = SE;
+ net_write(str_request, e - str_request);
+ printsub('>', &str_request[2], e - str_request - 2);
+ }
+}
+
+/*
+ * This is called when an AUTH SEND is received.
+ * It should never arrive on the server side (as only the server can
+ * send an AUTH SEND).
+ * You should probably respond to it if you can...
+ *
+ * If you want to respond to the types out of order (i.e. even
+ * if he sends LOGIN KERBEROS and you support both, you respond
+ * with KERBEROS instead of LOGIN (which is against what the
+ * protocol says)) you will have to hack this code...
+ */
+ void
+auth_send(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Authenticator *ap;
+ static unsigned char str_none[] = { IAC, SB, TELOPT_AUTHENTICATION,
+ TELQUAL_IS, AUTHTYPE_NULL, 0,
+ IAC, SE };
+ if (Server) {
+ if (auth_debug_mode) {
+ printf(">>>%s: auth_send called!\r\n", Name);
+ }
+ return;
+ }
+
+ if (auth_debug_mode) {
+ printf(">>>%s: auth_send got:", Name);
+ printd(data, cnt); printf("\r\n");
+ }
+
+ /*
+ * Save the data, if it is new, so that we can continue looking
+ * at it if the authorization we try doesn't work
+ */
+ if (data < _auth_send_data ||
+ data > _auth_send_data + sizeof(_auth_send_data)) {
+ auth_send_cnt = cnt > sizeof(_auth_send_data)
+ ? sizeof(_auth_send_data)
+ : cnt;
+ memmove((void *)_auth_send_data, (void *)data, auth_send_cnt);
+ auth_send_data = _auth_send_data;
+ } else {
+ /*
+ * This is probably a no-op, but we just make sure
+ */
+ auth_send_data = data;
+ auth_send_cnt = cnt;
+ }
+ while ((auth_send_cnt -= 2) >= 0) {
+ if (auth_debug_mode)
+ printf(">>>%s: He supports %d\r\n",
+ Name, *auth_send_data);
+ if ((i_support & ~i_wont_support) & typemask(*auth_send_data)) {
+ ap = findauthenticator(auth_send_data[0],
+ auth_send_data[1]);
+ if (ap && ap->send) {
+ if (auth_debug_mode)
+ printf(">>>%s: Trying %d %d\r\n",
+ Name, auth_send_data[0],
+ auth_send_data[1]);
+ if ((*ap->send)(ap)) {
+ /*
+ * Okay, we found one we like
+ * and did it.
+ * we can go home now.
+ */
+ if (auth_debug_mode)
+ printf(">>>%s: Using type %d\r\n",
+ Name, *auth_send_data);
+ auth_send_data += 2;
+ return;
+ }
+ }
+ /* else
+ * just continue on and look for the
+ * next one if we didn't do anything.
+ */
+ }
+ auth_send_data += 2;
+ }
+ net_write(str_none, sizeof(str_none));
+ printsub('>', &str_none[2], sizeof(str_none) - 2);
+ if (auth_debug_mode)
+ printf(">>>%s: Sent failure message\r\n", Name);
+ auth_finished(0, AUTH_REJECT);
+#ifdef KANNAN
+ /*
+ * We requested strong authentication, however no mechanisms worked.
+ * Therefore, exit on client end.
+ */
+ printf("Unable to securely authenticate user ... exit\n");
+ exit(0);
+#endif /* KANNAN */
+}
+
+ void
+auth_send_retry()
+{
+ /*
+ * if auth_send_cnt <= 0 then auth_send will end up rejecting
+ * the authentication and informing the other side of this.
+ */
+ auth_send(auth_send_data, auth_send_cnt);
+}
+
+ void
+auth_is(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Authenticator *ap;
+
+ if (cnt < 2)
+ return;
+
+ if (data[0] == AUTHTYPE_NULL) {
+ auth_finished(0, AUTH_REJECT);
+ return;
+ }
+
+ if (ap = findauthenticator(data[0], data[1])) {
+ if (ap->is)
+ (*ap->is)(ap, data+2, cnt-2);
+ } else if (auth_debug_mode)
+ printf(">>>%s: Invalid authentication in IS: %d\r\n",
+ Name, *data);
+}
+
+ void
+auth_reply(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Authenticator *ap;
+
+ if (cnt < 2)
+ return;
+
+ if (ap = findauthenticator(data[0], data[1])) {
+ if (ap->reply)
+ (*ap->reply)(ap, data+2, cnt-2);
+ } else if (auth_debug_mode)
+ printf(">>>%s: Invalid authentication in SEND: %d\r\n",
+ Name, *data);
+}
+
+ void
+auth_name(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Authenticator *ap;
+ unsigned char savename[256];
+
+ if (cnt < 1) {
+ if (auth_debug_mode)
+ printf(">>>%s: Empty name in NAME\r\n", Name);
+ return;
+ }
+ if (cnt > sizeof(savename) - 1) {
+ if (auth_debug_mode)
+ printf(">>>%s: Name in NAME (%d) exceeds %d length\r\n",
+ Name, cnt, sizeof(savename)-1);
+ return;
+ }
+ memmove((void *)savename, (void *)data, cnt);
+ savename[cnt] = '\0'; /* Null terminate */
+ if (auth_debug_mode)
+ printf(">>>%s: Got NAME [%s]\r\n", Name, savename);
+ auth_encrypt_user(savename);
+}
+
+ int
+auth_sendname(cp, len)
+ unsigned char *cp;
+ int len;
+{
+ static unsigned char str_request[256+6]
+ = { IAC, SB, TELOPT_AUTHENTICATION, TELQUAL_NAME, };
+ register unsigned char *e = str_request + 4;
+ register unsigned char *ee = &str_request[sizeof(str_request)-2];
+
+ while (--len >= 0) {
+ if ((*e++ = *cp++) == IAC)
+ *e++ = IAC;
+ if (e >= ee)
+ return(0);
+ }
+ *e++ = IAC;
+ *e++ = SE;
+ net_write(str_request, e - str_request);
+ printsub('>', &str_request[2], e - &str_request[2]);
+ return(1);
+}
+
+ void
+auth_finished(ap, result)
+ Authenticator *ap;
+ int result;
+{
+ if (!(authenticated = ap))
+ authenticated = &NoAuth;
+ validuser = result;
+}
+
+ /* ARGSUSED */
+ static void
+auth_intr(sig)
+ int sig;
+{
+ auth_finished(0, AUTH_REJECT);
+}
+
+ int
+auth_wait(name)
+ char *name;
+{
+ if (auth_debug_mode)
+ printf(">>>%s: in auth_wait.\r\n", Name);
+
+ if (Server && !authenticating)
+ return(0);
+
+ (void) signal(SIGALRM, auth_intr);
+ alarm(30);
+ while (!authenticated)
+ if (telnet_spin())
+ break;
+ alarm(0);
+ (void) signal(SIGALRM, SIG_DFL);
+
+ /*
+ * Now check to see if the user is valid or not
+ */
+ if (!authenticated || authenticated == &NoAuth)
+ return(AUTH_REJECT);
+
+ if (validuser == AUTH_VALID)
+ validuser = AUTH_USER;
+
+ if (authenticated->status)
+ validuser = (*authenticated->status)(authenticated,
+ name, validuser);
+ return(validuser);
+}
+
+ void
+auth_debug(mode)
+ int mode;
+{
+ auth_debug_mode = mode;
+}
+
+ void
+auth_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ Authenticator *ap;
+
+ if ((ap = findauthenticator(data[1], data[2])) && ap->printsub)
+ (*ap->printsub)(data, cnt, buf, buflen);
+ else
+ auth_gen_printsub(data, cnt, buf, buflen);
+}
+
+ void
+auth_gen_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ register unsigned char *cp;
+ unsigned char tbuf[16];
+
+ cnt -= 3;
+ data += 3;
+ buf[buflen-1] = '\0';
+ buf[buflen-2] = '*';
+ buflen -= 2;
+ for (; cnt > 0; cnt--, data++) {
+ sprintf((char *)tbuf, " %d", *data);
+ for (cp = tbuf; *cp && buflen > 0; --buflen)
+ *buf++ = *cp++;
+ if (buflen <= 0)
+ return;
+ }
+ *buf = '\0';
+}
+#endif
diff --git a/contrib/telnet/libtelnet/auth.h b/contrib/telnet/libtelnet/auth.h
new file mode 100644
index 0000000..615e8a0
--- /dev/null
+++ b/contrib/telnet/libtelnet/auth.h
@@ -0,0 +1,87 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)auth.h 8.1 (Berkeley) 6/4/93
+ */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#ifndef __AUTH__
+#define __AUTH__
+
+#define AUTH_REJECT 0 /* Rejected */
+#define AUTH_UNKNOWN 1 /* We don't know who he is, but he's okay */
+#define AUTH_OTHER 2 /* We know him, but not his name */
+#define AUTH_USER 3 /* We know he name */
+#define AUTH_VALID 4 /* We know him, and he needs no password */
+
+#if !defined(P)
+#ifdef __STDC__
+#define P(x) x
+#else
+#define P(x) ()
+#endif
+#endif
+
+typedef struct XauthP {
+ int type;
+ int way;
+ int (*init) P((struct XauthP *, int));
+ int (*send) P((struct XauthP *));
+ void (*is) P((struct XauthP *, unsigned char *, int));
+ void (*reply) P((struct XauthP *, unsigned char *, int));
+ int (*status) P((struct XauthP *, char *, int));
+ void (*printsub) P((unsigned char *, int, unsigned char *, int));
+} Authenticator;
+
+#include "auth-proto.h"
+
+extern auth_debug_mode;
+#endif
diff --git a/contrib/telnet/libtelnet/enc-proto.h b/contrib/telnet/libtelnet/enc-proto.h
new file mode 100644
index 0000000..2e30908
--- /dev/null
+++ b/contrib/telnet/libtelnet/enc-proto.h
@@ -0,0 +1,125 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)enc-proto.h 8.1 (Berkeley) 6/4/93
+ */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+#if !defined(P)
+#ifdef __STDC__
+#define P(x) x
+#else
+#define P(x) ()
+#endif
+#endif
+
+#ifdef ENCRYPTION
+void encrypt_init P((char *, int));
+Encryptions *findencryption P((int));
+void encrypt_send_supprt P((void));
+void encrypt_auto P((int));
+void decrypt_auto P((int));
+void encrypt_is P((unsigned char *, int));
+void encrypt_reply P((unsigned char *, int));
+void encrypt_start_input P((int));
+void encrypt_session_key P((Session_Key *, int));
+void encrypt_end_input P((void));
+void encrypt_start_output P((int));
+void encrypt_end_output P((void));
+void encrypt_send_request_start P((void));
+void encrypt_send_request_end P((void));
+void encrypt_send_end P((void));
+void encrypt_wait P((void));
+void encrypt_send_support P((void));
+void encrypt_send_keyid P((int, unsigned char *, int, int));
+int net_write P((unsigned char *, int));
+
+#ifdef TELENTD
+void encrypt_wait P((void));
+#else
+int encrypt_cmd P((int, char **));
+void encrypt_display P((void));
+#endif
+
+void krbdes_encrypt P((unsigned char *, int));
+int krbdes_decrypt P((int));
+int krbdes_is P((unsigned char *, int));
+int krbdes_reply P((unsigned char *, int));
+void krbdes_init P((int));
+int krbdes_start P((int, int));
+void krbdes_session P((Session_Key *, int));
+void krbdes_printsub P((unsigned char *, int, unsigned char *, int));
+
+void cfb64_encrypt P((unsigned char *, int));
+int cfb64_decrypt P((int));
+void cfb64_init P((int));
+int cfb64_start P((int, int));
+int cfb64_is P((unsigned char *, int));
+int cfb64_reply P((unsigned char *, int));
+void cfb64_session P((Session_Key *, int));
+int cfb64_keyid P((int, unsigned char *, int *));
+void cfb64_printsub P((unsigned char *, int, unsigned char *, int));
+
+void ofb64_encrypt P((unsigned char *, int));
+int ofb64_decrypt P((int));
+void ofb64_init P((int));
+int ofb64_start P((int, int));
+int ofb64_is P((unsigned char *, int));
+int ofb64_reply P((unsigned char *, int));
+void ofb64_session P((Session_Key *, int));
+int ofb64_keyid P((int, unsigned char *, int *));
+void ofb64_printsub P((unsigned char *, int, unsigned char *, int));
+
+int des_new_random_key P((Block));
+void des_set_random_generator_seed P((Block));
+void des_key_sched P((Block, Schedule));
+void des_ecb_encrypt P((Block, Block, Schedule, int));
+int des_string_to_key P((char *, Block));
+#endif /* ENCRYPTION */
diff --git a/contrib/telnet/libtelnet/enc_des.c b/contrib/telnet/libtelnet/enc_des.c
new file mode 100644
index 0000000..d6886fd
--- /dev/null
+++ b/contrib/telnet/libtelnet/enc_des.c
@@ -0,0 +1,724 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)enc_des.c 8.3 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#ifdef ENCRYPTION
+# ifdef AUTHENTICATION
+# ifdef DES_ENCRYPTION
+#include <arpa/telnet.h>
+#include <stdio.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+
+#include "encrypt.h"
+#include "key-proto.h"
+#include "misc-proto.h"
+
+extern encrypt_debug_mode;
+
+#define CFB 0
+#define OFB 1
+
+#define NO_SEND_IV 1
+#define NO_RECV_IV 2
+#define NO_KEYID 4
+#define IN_PROGRESS (NO_SEND_IV|NO_RECV_IV|NO_KEYID)
+#define SUCCESS 0
+#define FAILED -1
+
+
+struct fb {
+ Block krbdes_key;
+ Schedule krbdes_sched;
+ Block temp_feed;
+ unsigned char fb_feed[64];
+ int need_start;
+ int state[2];
+ int keyid[2];
+ int once;
+ struct stinfo {
+ Block str_output;
+ Block str_feed;
+ Block str_iv;
+ Block str_ikey;
+ Schedule str_sched;
+ int str_index;
+ int str_flagshift;
+ } streams[2];
+};
+
+static struct fb fb[2];
+
+struct keyidlist {
+ char *keyid;
+ int keyidlen;
+ char *key;
+ int keylen;
+ int flags;
+} keyidlist [] = {
+ { "\0", 1, 0, 0, 0 }, /* default key of zero */
+ { 0, 0, 0, 0, 0 }
+};
+
+#define KEYFLAG_MASK 03
+
+#define KEYFLAG_NOINIT 00
+#define KEYFLAG_INIT 01
+#define KEYFLAG_OK 02
+#define KEYFLAG_BAD 03
+
+#define KEYFLAG_SHIFT 2
+
+#define SHIFT_VAL(a,b) (KEYFLAG_SHIFT*((a)+((b)*2)))
+
+#define FB64_IV 1
+#define FB64_IV_OK 2
+#define FB64_IV_BAD 3
+
+
+void fb64_stream_iv P((Block, struct stinfo *));
+void fb64_init P((struct fb *));
+static int fb64_start P((struct fb *, int, int));
+int fb64_is P((unsigned char *, int, struct fb *));
+int fb64_reply P((unsigned char *, int, struct fb *));
+static void fb64_session P((Session_Key *, int, struct fb *));
+void fb64_stream_key P((Block, struct stinfo *));
+int fb64_keyid P((int, unsigned char *, int *, struct fb *));
+
+ void
+cfb64_init(server)
+ int server;
+{
+ fb64_init(&fb[CFB]);
+ fb[CFB].fb_feed[4] = ENCTYPE_DES_CFB64;
+ fb[CFB].streams[0].str_flagshift = SHIFT_VAL(0, CFB);
+ fb[CFB].streams[1].str_flagshift = SHIFT_VAL(1, CFB);
+}
+
+ void
+ofb64_init(server)
+ int server;
+{
+ fb64_init(&fb[OFB]);
+ fb[OFB].fb_feed[4] = ENCTYPE_DES_OFB64;
+ fb[CFB].streams[0].str_flagshift = SHIFT_VAL(0, OFB);
+ fb[CFB].streams[1].str_flagshift = SHIFT_VAL(1, OFB);
+}
+
+ void
+fb64_init(fbp)
+ register struct fb *fbp;
+{
+ memset((void *)fbp, 0, sizeof(*fbp));
+ fbp->state[0] = fbp->state[1] = FAILED;
+ fbp->fb_feed[0] = IAC;
+ fbp->fb_feed[1] = SB;
+ fbp->fb_feed[2] = TELOPT_ENCRYPT;
+ fbp->fb_feed[3] = ENCRYPT_IS;
+}
+
+/*
+ * Returns:
+ * -1: some error. Negotiation is done, encryption not ready.
+ * 0: Successful, initial negotiation all done.
+ * 1: successful, negotiation not done yet.
+ * 2: Not yet. Other things (like getting the key from
+ * Kerberos) have to happen before we can continue.
+ */
+ int
+cfb64_start(dir, server)
+ int dir;
+ int server;
+{
+ return(fb64_start(&fb[CFB], dir, server));
+}
+ int
+ofb64_start(dir, server)
+ int dir;
+ int server;
+{
+ return(fb64_start(&fb[OFB], dir, server));
+}
+
+ static int
+fb64_start(fbp, dir, server)
+ struct fb *fbp;
+ int dir;
+ int server;
+{
+ Block b;
+ int x;
+ unsigned char *p;
+ register int state;
+
+ switch (dir) {
+ case DIR_DECRYPT:
+ /*
+ * This is simply a request to have the other side
+ * start output (our input). He will negotiate an
+ * IV so we need not look for it.
+ */
+ state = fbp->state[dir-1];
+ if (state == FAILED)
+ state = IN_PROGRESS;
+ break;
+
+ case DIR_ENCRYPT:
+ state = fbp->state[dir-1];
+ if (state == FAILED)
+ state = IN_PROGRESS;
+ else if ((state & NO_SEND_IV) == 0)
+ break;
+
+ if (!VALIDKEY(fbp->krbdes_key)) {
+ fbp->need_start = 1;
+ break;
+ }
+ state &= ~NO_SEND_IV;
+ state |= NO_RECV_IV;
+ if (encrypt_debug_mode)
+ printf("Creating new feed\r\n");
+ /*
+ * Create a random feed and send it over.
+ */
+ des_new_random_key(fbp->temp_feed);
+ des_ecb_encrypt(fbp->temp_feed, fbp->temp_feed,
+ fbp->krbdes_sched, 1);
+ p = fbp->fb_feed + 3;
+ *p++ = ENCRYPT_IS;
+ p++;
+ *p++ = FB64_IV;
+ for (x = 0; x < sizeof(Block); ++x) {
+ if ((*p++ = fbp->temp_feed[x]) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ printsub('>', &fbp->fb_feed[2], p - &fbp->fb_feed[2]);
+ net_write(fbp->fb_feed, p - fbp->fb_feed);
+ break;
+ default:
+ return(FAILED);
+ }
+ return(fbp->state[dir-1] = state);
+}
+
+/*
+ * Returns:
+ * -1: some error. Negotiation is done, encryption not ready.
+ * 0: Successful, initial negotiation all done.
+ * 1: successful, negotiation not done yet.
+ */
+ int
+cfb64_is(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ return(fb64_is(data, cnt, &fb[CFB]));
+}
+ int
+ofb64_is(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ return(fb64_is(data, cnt, &fb[OFB]));
+}
+
+ int
+fb64_is(data, cnt, fbp)
+ unsigned char *data;
+ int cnt;
+ struct fb *fbp;
+{
+ int x;
+ unsigned char *p;
+ Block b;
+ register int state = fbp->state[DIR_DECRYPT-1];
+
+ if (cnt-- < 1)
+ goto failure;
+
+ switch (*data++) {
+ case FB64_IV:
+ if (cnt != sizeof(Block)) {
+ if (encrypt_debug_mode)
+ printf("CFB64: initial vector failed on size\r\n");
+ state = FAILED;
+ goto failure;
+ }
+
+ if (encrypt_debug_mode)
+ printf("CFB64: initial vector received\r\n");
+
+ if (encrypt_debug_mode)
+ printf("Initializing Decrypt stream\r\n");
+
+ fb64_stream_iv((void *)data, &fbp->streams[DIR_DECRYPT-1]);
+
+ p = fbp->fb_feed + 3;
+ *p++ = ENCRYPT_REPLY;
+ p++;
+ *p++ = FB64_IV_OK;
+ *p++ = IAC;
+ *p++ = SE;
+ printsub('>', &fbp->fb_feed[2], p - &fbp->fb_feed[2]);
+ net_write(fbp->fb_feed, p - fbp->fb_feed);
+
+ state = fbp->state[DIR_DECRYPT-1] = IN_PROGRESS;
+ break;
+
+ default:
+ if (encrypt_debug_mode) {
+ printf("Unknown option type: %d\r\n", *(data-1));
+ printd(data, cnt);
+ printf("\r\n");
+ }
+ /* FALL THROUGH */
+ failure:
+ /*
+ * We failed. Send an FB64_IV_BAD option
+ * to the other side so it will know that
+ * things failed.
+ */
+ p = fbp->fb_feed + 3;
+ *p++ = ENCRYPT_REPLY;
+ p++;
+ *p++ = FB64_IV_BAD;
+ *p++ = IAC;
+ *p++ = SE;
+ printsub('>', &fbp->fb_feed[2], p - &fbp->fb_feed[2]);
+ net_write(fbp->fb_feed, p - fbp->fb_feed);
+
+ break;
+ }
+ return(fbp->state[DIR_DECRYPT-1] = state);
+}
+
+/*
+ * Returns:
+ * -1: some error. Negotiation is done, encryption not ready.
+ * 0: Successful, initial negotiation all done.
+ * 1: successful, negotiation not done yet.
+ */
+ int
+cfb64_reply(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ return(fb64_reply(data, cnt, &fb[CFB]));
+}
+ int
+ofb64_reply(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ return(fb64_reply(data, cnt, &fb[OFB]));
+}
+
+
+ int
+fb64_reply(data, cnt, fbp)
+ unsigned char *data;
+ int cnt;
+ struct fb *fbp;
+{
+ int x;
+ unsigned char *p;
+ Block b;
+ register int state = fbp->state[DIR_ENCRYPT-1];
+
+ if (cnt-- < 1)
+ goto failure;
+
+ switch (*data++) {
+ case FB64_IV_OK:
+ fb64_stream_iv(fbp->temp_feed, &fbp->streams[DIR_ENCRYPT-1]);
+ if (state == FAILED)
+ state = IN_PROGRESS;
+ state &= ~NO_RECV_IV;
+ encrypt_send_keyid(DIR_ENCRYPT, (unsigned char *)"\0", 1, 1);
+ break;
+
+ case FB64_IV_BAD:
+ memset(fbp->temp_feed, 0, sizeof(Block));
+ fb64_stream_iv(fbp->temp_feed, &fbp->streams[DIR_ENCRYPT-1]);
+ state = FAILED;
+ break;
+
+ default:
+ if (encrypt_debug_mode) {
+ printf("Unknown option type: %d\r\n", data[-1]);
+ printd(data, cnt);
+ printf("\r\n");
+ }
+ /* FALL THROUGH */
+ failure:
+ state = FAILED;
+ break;
+ }
+ return(fbp->state[DIR_ENCRYPT-1] = state);
+}
+
+ void
+cfb64_session(key, server)
+ Session_Key *key;
+ int server;
+{
+ fb64_session(key, server, &fb[CFB]);
+}
+
+ void
+ofb64_session(key, server)
+ Session_Key *key;
+ int server;
+{
+ fb64_session(key, server, &fb[OFB]);
+}
+
+ static void
+fb64_session(key, server, fbp)
+ Session_Key *key;
+ int server;
+ struct fb *fbp;
+{
+
+ if (!key || key->type != SK_DES) {
+ if (encrypt_debug_mode)
+ printf("Can't set krbdes's session key (%d != %d)\r\n",
+ key ? key->type : -1, SK_DES);
+ return;
+ }
+ memmove((void *)fbp->krbdes_key, (void *)key->data, sizeof(Block));
+
+ fb64_stream_key(fbp->krbdes_key, &fbp->streams[DIR_ENCRYPT-1]);
+ fb64_stream_key(fbp->krbdes_key, &fbp->streams[DIR_DECRYPT-1]);
+
+ if (fbp->once == 0) {
+ des_set_random_generator_seed(fbp->krbdes_key);
+ fbp->once = 1;
+ }
+ des_key_sched(fbp->krbdes_key, fbp->krbdes_sched);
+ /*
+ * Now look to see if krbdes_start() was was waiting for
+ * the key to show up. If so, go ahead an call it now
+ * that we have the key.
+ */
+ if (fbp->need_start) {
+ fbp->need_start = 0;
+ fb64_start(fbp, DIR_ENCRYPT, server);
+ }
+}
+
+/*
+ * We only accept a keyid of 0. If we get a keyid of
+ * 0, then mark the state as SUCCESS.
+ */
+ int
+cfb64_keyid(dir, kp, lenp)
+ int dir, *lenp;
+ unsigned char *kp;
+{
+ return(fb64_keyid(dir, kp, lenp, &fb[CFB]));
+}
+
+ int
+ofb64_keyid(dir, kp, lenp)
+ int dir, *lenp;
+ unsigned char *kp;
+{
+ return(fb64_keyid(dir, kp, lenp, &fb[OFB]));
+}
+
+ int
+fb64_keyid(dir, kp, lenp, fbp)
+ int dir, *lenp;
+ unsigned char *kp;
+ struct fb *fbp;
+{
+ register int state = fbp->state[dir-1];
+
+ if (*lenp != 1 || (*kp != '\0')) {
+ *lenp = 0;
+ return(state);
+ }
+
+ if (state == FAILED)
+ state = IN_PROGRESS;
+
+ state &= ~NO_KEYID;
+
+ return(fbp->state[dir-1] = state);
+}
+
+ void
+fb64_printsub(data, cnt, buf, buflen, type)
+ unsigned char *data, *buf, *type;
+ int cnt, buflen;
+{
+ char lbuf[32];
+ register int i;
+ char *cp;
+
+ buf[buflen-1] = '\0'; /* make sure it's NULL terminated */
+ buflen -= 1;
+
+ switch(data[2]) {
+ case FB64_IV:
+ sprintf(lbuf, "%s_IV", type);
+ cp = lbuf;
+ goto common;
+
+ case FB64_IV_OK:
+ sprintf(lbuf, "%s_IV_OK", type);
+ cp = lbuf;
+ goto common;
+
+ case FB64_IV_BAD:
+ sprintf(lbuf, "%s_IV_BAD", type);
+ cp = lbuf;
+ goto common;
+
+ default:
+ sprintf(lbuf, " %d (unknown)", data[2]);
+ cp = lbuf;
+ common:
+ for (; (buflen > 0) && (*buf = *cp++); buf++)
+ buflen--;
+ for (i = 3; i < cnt; i++) {
+ sprintf(lbuf, " %d", data[i]);
+ for (cp = lbuf; (buflen > 0) && (*buf = *cp++); buf++)
+ buflen--;
+ }
+ break;
+ }
+}
+
+ void
+cfb64_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ fb64_printsub(data, cnt, buf, buflen, "CFB64");
+}
+
+ void
+ofb64_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ fb64_printsub(data, cnt, buf, buflen, "OFB64");
+}
+
+ void
+fb64_stream_iv(seed, stp)
+ Block seed;
+ register struct stinfo *stp;
+{
+
+ memmove((void *)stp->str_iv, (void *)seed, sizeof(Block));
+ memmove((void *)stp->str_output, (void *)seed, sizeof(Block));
+
+ des_key_sched(stp->str_ikey, stp->str_sched);
+
+ stp->str_index = sizeof(Block);
+}
+
+ void
+fb64_stream_key(key, stp)
+ Block key;
+ register struct stinfo *stp;
+{
+ memmove((void *)stp->str_ikey, (void *)key, sizeof(Block));
+ des_key_sched(key, stp->str_sched);
+
+ memmove((void *)stp->str_output, (void *)stp->str_iv, sizeof(Block));
+
+ stp->str_index = sizeof(Block);
+}
+
+/*
+ * DES 64 bit Cipher Feedback
+ *
+ * key --->+-----+
+ * +->| DES |--+
+ * | +-----+ |
+ * | v
+ * INPUT --(--------->(+)+---> DATA
+ * | |
+ * +-------------+
+ *
+ *
+ * Given:
+ * iV: Initial vector, 64 bits (8 bytes) long.
+ * Dn: the nth chunk of 64 bits (8 bytes) of data to encrypt (decrypt).
+ * On: the nth chunk of 64 bits (8 bytes) of encrypted (decrypted) output.
+ *
+ * V0 = DES(iV, key)
+ * On = Dn ^ Vn
+ * V(n+1) = DES(On, key)
+ */
+
+ void
+cfb64_encrypt(s, c)
+ register unsigned char *s;
+ int c;
+{
+ register struct stinfo *stp = &fb[CFB].streams[DIR_ENCRYPT-1];
+ register int index;
+
+ index = stp->str_index;
+ while (c-- > 0) {
+ if (index == sizeof(Block)) {
+ Block b;
+ des_ecb_encrypt(stp->str_output, b, stp->str_sched, 1);
+ memmove((void *)stp->str_feed, (void *)b, sizeof(Block));
+ index = 0;
+ }
+
+ /* On encryption, we store (feed ^ data) which is cypher */
+ *s = stp->str_output[index] = (stp->str_feed[index] ^ *s);
+ s++;
+ index++;
+ }
+ stp->str_index = index;
+}
+
+ int
+cfb64_decrypt(data)
+ int data;
+{
+ register struct stinfo *stp = &fb[CFB].streams[DIR_DECRYPT-1];
+ int index;
+
+ if (data == -1) {
+ /*
+ * Back up one byte. It is assumed that we will
+ * never back up more than one byte. If we do, this
+ * may or may not work.
+ */
+ if (stp->str_index)
+ --stp->str_index;
+ return(0);
+ }
+
+ index = stp->str_index++;
+ if (index == sizeof(Block)) {
+ Block b;
+ des_ecb_encrypt(stp->str_output, b, stp->str_sched, 1);
+ memmove((void *)stp->str_feed, (void *)b, sizeof(Block));
+ stp->str_index = 1; /* Next time will be 1 */
+ index = 0; /* But now use 0 */
+ }
+
+ /* On decryption we store (data) which is cypher. */
+ stp->str_output[index] = data;
+ return(data ^ stp->str_feed[index]);
+}
+
+/*
+ * DES 64 bit Output Feedback
+ *
+ * key --->+-----+
+ * +->| DES |--+
+ * | +-----+ |
+ * +-----------+
+ * v
+ * INPUT -------->(+) ----> DATA
+ *
+ * Given:
+ * iV: Initial vector, 64 bits (8 bytes) long.
+ * Dn: the nth chunk of 64 bits (8 bytes) of data to encrypt (decrypt).
+ * On: the nth chunk of 64 bits (8 bytes) of encrypted (decrypted) output.
+ *
+ * V0 = DES(iV, key)
+ * V(n+1) = DES(Vn, key)
+ * On = Dn ^ Vn
+ */
+ void
+ofb64_encrypt(s, c)
+ register unsigned char *s;
+ int c;
+{
+ register struct stinfo *stp = &fb[OFB].streams[DIR_ENCRYPT-1];
+ register int index;
+
+ index = stp->str_index;
+ while (c-- > 0) {
+ if (index == sizeof(Block)) {
+ Block b;
+ des_ecb_encrypt(stp->str_feed, b, stp->str_sched, 1);
+ memmove((void *)stp->str_feed, (void *)b, sizeof(Block));
+ index = 0;
+ }
+ *s++ ^= stp->str_feed[index];
+ index++;
+ }
+ stp->str_index = index;
+}
+
+ int
+ofb64_decrypt(data)
+ int data;
+{
+ register struct stinfo *stp = &fb[OFB].streams[DIR_DECRYPT-1];
+ int index;
+
+ if (data == -1) {
+ /*
+ * Back up one byte. It is assumed that we will
+ * never back up more than one byte. If we do, this
+ * may or may not work.
+ */
+ if (stp->str_index)
+ --stp->str_index;
+ return(0);
+ }
+
+ index = stp->str_index++;
+ if (index == sizeof(Block)) {
+ Block b;
+ des_ecb_encrypt(stp->str_feed, b, stp->str_sched, 1);
+ memmove((void *)stp->str_feed, (void *)b, sizeof(Block));
+ stp->str_index = 1; /* Next time will be 1 */
+ index = 0; /* But now use 0 */
+ }
+
+ return(data ^ stp->str_feed[index]);
+}
+# endif /* DES_ENCRYPTION */
+# endif /* AUTHENTICATION */
+#endif /* ENCRYPTION */
diff --git a/contrib/telnet/libtelnet/encrypt.c b/contrib/telnet/libtelnet/encrypt.c
new file mode 100644
index 0000000..432df0c
--- /dev/null
+++ b/contrib/telnet/libtelnet/encrypt.c
@@ -0,0 +1,1000 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)encrypt.c 8.2 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#ifdef ENCRYPTION
+
+#define ENCRYPT_NAMES
+#include <arpa/telnet.h>
+
+#include "encrypt.h"
+#include "misc.h"
+
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+/*
+ * These functions pointers point to the current routines
+ * for encrypting and decrypting data.
+ */
+void (*encrypt_output) P((unsigned char *, int));
+int (*decrypt_input) P((int));
+
+int encrypt_debug_mode = 0;
+static int decrypt_mode = 0;
+static int encrypt_mode = 0;
+static int encrypt_verbose = 0;
+static int autoencrypt = 0;
+static int autodecrypt = 0;
+static int havesessionkey = 0;
+static int Server = 0;
+static char *Name = "Noname";
+
+#define typemask(x) ((x) > 0 ? 1 << ((x)-1) : 0)
+
+static long i_support_encrypt = typemask(ENCTYPE_DES_CFB64)
+ | typemask(ENCTYPE_DES_OFB64);
+static long i_support_decrypt = typemask(ENCTYPE_DES_CFB64)
+ | typemask(ENCTYPE_DES_OFB64);
+static long i_wont_support_encrypt = 0;
+static long i_wont_support_decrypt = 0;
+#define I_SUPPORT_ENCRYPT (i_support_encrypt & ~i_wont_support_encrypt)
+#define I_SUPPORT_DECRYPT (i_support_decrypt & ~i_wont_support_decrypt)
+
+static long remote_supports_encrypt = 0;
+static long remote_supports_decrypt = 0;
+
+static Encryptions encryptions[] = {
+#ifdef DES_ENCRYPTION
+ { "DES_CFB64", ENCTYPE_DES_CFB64,
+ cfb64_encrypt,
+ cfb64_decrypt,
+ cfb64_init,
+ cfb64_start,
+ cfb64_is,
+ cfb64_reply,
+ cfb64_session,
+ cfb64_keyid,
+ cfb64_printsub },
+ { "DES_OFB64", ENCTYPE_DES_OFB64,
+ ofb64_encrypt,
+ ofb64_decrypt,
+ ofb64_init,
+ ofb64_start,
+ ofb64_is,
+ ofb64_reply,
+ ofb64_session,
+ ofb64_keyid,
+ ofb64_printsub },
+#endif /* DES_ENCRYPTION */
+ { 0, },
+};
+
+static unsigned char str_send[64] = { IAC, SB, TELOPT_ENCRYPT,
+ ENCRYPT_SUPPORT };
+static unsigned char str_suplen = 0;
+static unsigned char str_start[72] = { IAC, SB, TELOPT_ENCRYPT };
+static unsigned char str_end[] = { IAC, SB, TELOPT_ENCRYPT, 0, IAC, SE };
+
+ Encryptions *
+findencryption(type)
+ int type;
+{
+ Encryptions *ep = encryptions;
+
+ if (!(I_SUPPORT_ENCRYPT & remote_supports_decrypt & typemask(type)))
+ return(0);
+ while (ep->type && ep->type != type)
+ ++ep;
+ return(ep->type ? ep : 0);
+}
+
+ Encryptions *
+finddecryption(type)
+ int type;
+{
+ Encryptions *ep = encryptions;
+
+ if (!(I_SUPPORT_DECRYPT & remote_supports_encrypt & typemask(type)))
+ return(0);
+ while (ep->type && ep->type != type)
+ ++ep;
+ return(ep->type ? ep : 0);
+}
+
+#define MAXKEYLEN 64
+
+static struct key_info {
+ unsigned char keyid[MAXKEYLEN];
+ int keylen;
+ int dir;
+ int *modep;
+ Encryptions *(*getcrypt)();
+} ki[2] = {
+ { { 0 }, 0, DIR_ENCRYPT, &encrypt_mode, findencryption },
+ { { 0 }, 0, DIR_DECRYPT, &decrypt_mode, finddecryption },
+};
+
+ void
+encrypt_init(name, server)
+ char *name;
+ int server;
+{
+ Encryptions *ep = encryptions;
+
+ Name = name;
+ Server = server;
+ i_support_encrypt = i_support_decrypt = 0;
+ remote_supports_encrypt = remote_supports_decrypt = 0;
+ encrypt_mode = 0;
+ decrypt_mode = 0;
+ encrypt_output = 0;
+ decrypt_input = 0;
+#ifdef notdef
+ encrypt_verbose = !server;
+#endif
+
+ str_suplen = 4;
+
+ while (ep->type) {
+ if (encrypt_debug_mode)
+ printf(">>>%s: I will support %s\r\n",
+ Name, ENCTYPE_NAME(ep->type));
+ i_support_encrypt |= typemask(ep->type);
+ i_support_decrypt |= typemask(ep->type);
+ if ((i_wont_support_decrypt & typemask(ep->type)) == 0)
+ if ((str_send[str_suplen++] = ep->type) == IAC)
+ str_send[str_suplen++] = IAC;
+ if (ep->init)
+ (*ep->init)(Server);
+ ++ep;
+ }
+ str_send[str_suplen++] = IAC;
+ str_send[str_suplen++] = SE;
+}
+
+ void
+encrypt_list_types()
+{
+ Encryptions *ep = encryptions;
+
+ printf("Valid encryption types:\n");
+ while (ep->type) {
+ printf("\t%s (%d)\r\n", ENCTYPE_NAME(ep->type), ep->type);
+ ++ep;
+ }
+}
+
+ int
+EncryptEnable(type, mode)
+ char *type, *mode;
+{
+ if (isprefix(type, "help") || isprefix(type, "?")) {
+ printf("Usage: encrypt enable <type> [input|output]\n");
+ encrypt_list_types();
+ return(0);
+ }
+ if (EncryptType(type, mode))
+ return(EncryptStart(mode));
+ return(0);
+}
+
+ int
+EncryptDisable(type, mode)
+ char *type, *mode;
+{
+ register Encryptions *ep;
+ int ret = 0;
+
+ if (isprefix(type, "help") || isprefix(type, "?")) {
+ printf("Usage: encrypt disable <type> [input|output]\n");
+ encrypt_list_types();
+ } else if ((ep = (Encryptions *)genget(type, encryptions,
+ sizeof(Encryptions))) == 0) {
+ printf("%s: invalid encryption type\n", type);
+ } else if (Ambiguous(ep)) {
+ printf("Ambiguous type '%s'\n", type);
+ } else {
+ if ((mode == 0) || (isprefix(mode, "input") ? 1 : 0)) {
+ if (decrypt_mode == ep->type)
+ EncryptStopInput();
+ i_wont_support_decrypt |= typemask(ep->type);
+ ret = 1;
+ }
+ if ((mode == 0) || (isprefix(mode, "output"))) {
+ if (encrypt_mode == ep->type)
+ EncryptStopOutput();
+ i_wont_support_encrypt |= typemask(ep->type);
+ ret = 1;
+ }
+ if (ret == 0)
+ printf("%s: invalid encryption mode\n", mode);
+ }
+ return(ret);
+}
+
+ int
+EncryptType(type, mode)
+ char *type;
+ char *mode;
+{
+ register Encryptions *ep;
+ int ret = 0;
+
+ if (isprefix(type, "help") || isprefix(type, "?")) {
+ printf("Usage: encrypt type <type> [input|output]\n");
+ encrypt_list_types();
+ } else if ((ep = (Encryptions *)genget(type, encryptions,
+ sizeof(Encryptions))) == 0) {
+ printf("%s: invalid encryption type\n", type);
+ } else if (Ambiguous(ep)) {
+ printf("Ambiguous type '%s'\n", type);
+ } else {
+ if ((mode == 0) || isprefix(mode, "input")) {
+ decrypt_mode = ep->type;
+ i_wont_support_decrypt &= ~typemask(ep->type);
+ ret = 1;
+ }
+ if ((mode == 0) || isprefix(mode, "output")) {
+ encrypt_mode = ep->type;
+ i_wont_support_encrypt &= ~typemask(ep->type);
+ ret = 1;
+ }
+ if (ret == 0)
+ printf("%s: invalid encryption mode\n", mode);
+ }
+ return(ret);
+}
+
+ int
+EncryptStart(mode)
+ char *mode;
+{
+ register int ret = 0;
+ if (mode) {
+ if (isprefix(mode, "input"))
+ return(EncryptStartInput());
+ if (isprefix(mode, "output"))
+ return(EncryptStartOutput());
+ if (isprefix(mode, "help") || isprefix(mode, "?")) {
+ printf("Usage: encrypt start [input|output]\n");
+ return(0);
+ }
+ printf("%s: invalid encryption mode 'encrypt start ?' for help\n", mode);
+ return(0);
+ }
+ ret += EncryptStartInput();
+ ret += EncryptStartOutput();
+ return(ret);
+}
+
+ int
+EncryptStartInput()
+{
+ if (decrypt_mode) {
+ encrypt_send_request_start();
+ return(1);
+ }
+ printf("No previous decryption mode, decryption not enabled\r\n");
+ return(0);
+}
+
+ int
+EncryptStartOutput()
+{
+ if (encrypt_mode) {
+ encrypt_start_output(encrypt_mode);
+ return(1);
+ }
+ printf("No previous encryption mode, encryption not enabled\r\n");
+ return(0);
+}
+
+ int
+EncryptStop(mode)
+ char *mode;
+{
+ int ret = 0;
+ if (mode) {
+ if (isprefix(mode, "input"))
+ return(EncryptStopInput());
+ if (isprefix(mode, "output"))
+ return(EncryptStopOutput());
+ if (isprefix(mode, "help") || isprefix(mode, "?")) {
+ printf("Usage: encrypt stop [input|output]\n");
+ return(0);
+ }
+ printf("%s: invalid encryption mode 'encrypt stop ?' for help\n", mode);
+ return(0);
+ }
+ ret += EncryptStopInput();
+ ret += EncryptStopOutput();
+ return(ret);
+}
+
+ int
+EncryptStopInput()
+{
+ encrypt_send_request_end();
+ return(1);
+}
+
+ int
+EncryptStopOutput()
+{
+ encrypt_send_end();
+ return(1);
+}
+
+ void
+encrypt_display()
+{
+ if (encrypt_output)
+ printf("Currently encrypting output with %s\r\n",
+ ENCTYPE_NAME(encrypt_mode));
+ if (decrypt_input)
+ printf("Currently decrypting input with %s\r\n",
+ ENCTYPE_NAME(decrypt_mode));
+}
+
+ int
+EncryptStatus()
+{
+ if (encrypt_output)
+ printf("Currently encrypting output with %s\r\n",
+ ENCTYPE_NAME(encrypt_mode));
+ else if (encrypt_mode) {
+ printf("Currently output is clear text.\r\n");
+ printf("Last encryption mode was %s\r\n",
+ ENCTYPE_NAME(encrypt_mode));
+ }
+ if (decrypt_input) {
+ printf("Currently decrypting input with %s\r\n",
+ ENCTYPE_NAME(decrypt_mode));
+ } else if (decrypt_mode) {
+ printf("Currently input is clear text.\r\n");
+ printf("Last decryption mode was %s\r\n",
+ ENCTYPE_NAME(decrypt_mode));
+ }
+ return 1;
+}
+
+ void
+encrypt_send_support()
+{
+ if (str_suplen) {
+ /*
+ * If the user has requested that decryption start
+ * immediatly, then send a "REQUEST START" before
+ * we negotiate the type.
+ */
+ if (!Server && autodecrypt)
+ encrypt_send_request_start();
+ net_write(str_send, str_suplen);
+ printsub('>', &str_send[2], str_suplen - 2);
+ str_suplen = 0;
+ }
+}
+
+ int
+EncryptDebug(on)
+ int on;
+{
+ if (on < 0)
+ encrypt_debug_mode ^= 1;
+ else
+ encrypt_debug_mode = on;
+ printf("Encryption debugging %s\r\n",
+ encrypt_debug_mode ? "enabled" : "disabled");
+ return(1);
+}
+
+ int
+EncryptVerbose(on)
+ int on;
+{
+ if (on < 0)
+ encrypt_verbose ^= 1;
+ else
+ encrypt_verbose = on;
+ printf("Encryption %s verbose\r\n",
+ encrypt_verbose ? "is" : "is not");
+ return(1);
+}
+
+ int
+EncryptAutoEnc(on)
+ int on;
+{
+ encrypt_auto(on);
+ printf("Automatic encryption of output is %s\r\n",
+ autoencrypt ? "enabled" : "disabled");
+ return(1);
+}
+
+ int
+EncryptAutoDec(on)
+ int on;
+{
+ decrypt_auto(on);
+ printf("Automatic decryption of input is %s\r\n",
+ autodecrypt ? "enabled" : "disabled");
+ return(1);
+}
+
+/*
+ * Called when ENCRYPT SUPPORT is received.
+ */
+ void
+encrypt_support(typelist, cnt)
+ unsigned char *typelist;
+ int cnt;
+{
+ register int type, use_type = 0;
+ Encryptions *ep;
+
+ /*
+ * Forget anything the other side has previously told us.
+ */
+ remote_supports_decrypt = 0;
+
+ while (cnt-- > 0) {
+ type = *typelist++;
+ if (encrypt_debug_mode)
+ printf(">>>%s: He is supporting %s (%d)\r\n",
+ Name,
+ ENCTYPE_NAME(type), type);
+ if ((type < ENCTYPE_CNT) &&
+ (I_SUPPORT_ENCRYPT & typemask(type))) {
+ remote_supports_decrypt |= typemask(type);
+ if (use_type == 0)
+ use_type = type;
+ }
+ }
+ if (use_type) {
+ ep = findencryption(use_type);
+ if (!ep)
+ return;
+ type = ep->start ? (*ep->start)(DIR_ENCRYPT, Server) : 0;
+ if (encrypt_debug_mode)
+ printf(">>>%s: (*ep->start)() returned %d\r\n",
+ Name, type);
+ if (type < 0)
+ return;
+ encrypt_mode = use_type;
+ if (type == 0)
+ encrypt_start_output(use_type);
+ }
+}
+
+ void
+encrypt_is(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Encryptions *ep;
+ register int type, ret;
+
+ if (--cnt < 0)
+ return;
+ type = *data++;
+ if (type < ENCTYPE_CNT)
+ remote_supports_encrypt |= typemask(type);
+ if (!(ep = finddecryption(type))) {
+ if (encrypt_debug_mode)
+ printf(">>>%s: Can't find type %s (%d) for initial negotiation\r\n",
+ Name,
+ ENCTYPE_NAME_OK(type)
+ ? ENCTYPE_NAME(type) : "(unknown)",
+ type);
+ return;
+ }
+ if (!ep->is) {
+ if (encrypt_debug_mode)
+ printf(">>>%s: No initial negotiation needed for type %s (%d)\r\n",
+ Name,
+ ENCTYPE_NAME_OK(type)
+ ? ENCTYPE_NAME(type) : "(unknown)",
+ type);
+ ret = 0;
+ } else {
+ ret = (*ep->is)(data, cnt);
+ if (encrypt_debug_mode)
+ printf("(*ep->is)(%x, %d) returned %s(%d)\n", data, cnt,
+ (ret < 0) ? "FAIL " :
+ (ret == 0) ? "SUCCESS " : "MORE_TO_DO ", ret);
+ }
+ if (ret < 0) {
+ autodecrypt = 0;
+ } else {
+ decrypt_mode = type;
+ if (ret == 0 && autodecrypt)
+ encrypt_send_request_start();
+ }
+}
+
+ void
+encrypt_reply(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Encryptions *ep;
+ register int ret, type;
+
+ if (--cnt < 0)
+ return;
+ type = *data++;
+ if (!(ep = findencryption(type))) {
+ if (encrypt_debug_mode)
+ printf(">>>%s: Can't find type %s (%d) for initial negotiation\r\n",
+ Name,
+ ENCTYPE_NAME_OK(type)
+ ? ENCTYPE_NAME(type) : "(unknown)",
+ type);
+ return;
+ }
+ if (!ep->reply) {
+ if (encrypt_debug_mode)
+ printf(">>>%s: No initial negotiation needed for type %s (%d)\r\n",
+ Name,
+ ENCTYPE_NAME_OK(type)
+ ? ENCTYPE_NAME(type) : "(unknown)",
+ type);
+ ret = 0;
+ } else {
+ ret = (*ep->reply)(data, cnt);
+ if (encrypt_debug_mode)
+ printf("(*ep->reply)(%x, %d) returned %s(%d)\n",
+ data, cnt,
+ (ret < 0) ? "FAIL " :
+ (ret == 0) ? "SUCCESS " : "MORE_TO_DO ", ret);
+ }
+ if (encrypt_debug_mode)
+ printf(">>>%s: encrypt_reply returned %d\n", Name, ret);
+ if (ret < 0) {
+ autoencrypt = 0;
+ } else {
+ encrypt_mode = type;
+ if (ret == 0 && autoencrypt)
+ encrypt_start_output(type);
+ }
+}
+
+/*
+ * Called when a ENCRYPT START command is received.
+ */
+ void
+encrypt_start(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ Encryptions *ep;
+
+ if (!decrypt_mode) {
+ /*
+ * Something is wrong. We should not get a START
+ * command without having already picked our
+ * decryption scheme. Send a REQUEST-END to
+ * attempt to clear the channel...
+ */
+ printf("%s: Warning, Cannot decrypt input stream!!!\r\n", Name);
+ encrypt_send_request_end();
+ return;
+ }
+
+ if (ep = finddecryption(decrypt_mode)) {
+ decrypt_input = ep->input;
+ if (encrypt_verbose)
+ printf("[ Input is now decrypted with type %s ]\r\n",
+ ENCTYPE_NAME(decrypt_mode));
+ if (encrypt_debug_mode)
+ printf(">>>%s: Start to decrypt input with type %s\r\n",
+ Name, ENCTYPE_NAME(decrypt_mode));
+ } else {
+ printf("%s: Warning, Cannot decrypt type %s (%d)!!!\r\n",
+ Name,
+ ENCTYPE_NAME_OK(decrypt_mode)
+ ? ENCTYPE_NAME(decrypt_mode)
+ : "(unknown)",
+ decrypt_mode);
+ encrypt_send_request_end();
+ }
+}
+
+ void
+encrypt_session_key(key, server)
+ Session_Key *key;
+ int server;
+{
+ Encryptions *ep = encryptions;
+
+ havesessionkey = 1;
+
+ while (ep->type) {
+ if (ep->session)
+ (*ep->session)(key, server);
+#ifdef notdef
+ if (!encrypt_output && autoencrypt && !server)
+ encrypt_start_output(ep->type);
+ if (!decrypt_input && autodecrypt && !server)
+ encrypt_send_request_start();
+#endif
+ ++ep;
+ }
+}
+
+/*
+ * Called when ENCRYPT END is received.
+ */
+ void
+encrypt_end()
+{
+ decrypt_input = 0;
+ if (encrypt_debug_mode)
+ printf(">>>%s: Input is back to clear text\r\n", Name);
+ if (encrypt_verbose)
+ printf("[ Input is now clear text ]\r\n");
+}
+
+/*
+ * Called when ENCRYPT REQUEST-END is received.
+ */
+ void
+encrypt_request_end()
+{
+ encrypt_send_end();
+}
+
+/*
+ * Called when ENCRYPT REQUEST-START is received. If we receive
+ * this before a type is picked, then that indicates that the
+ * other side wants us to start encrypting data as soon as we
+ * can.
+ */
+ void
+encrypt_request_start(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ if (encrypt_mode == 0) {
+ if (Server)
+ autoencrypt = 1;
+ return;
+ }
+ encrypt_start_output(encrypt_mode);
+}
+
+static unsigned char str_keyid[(MAXKEYLEN*2)+5] = { IAC, SB, TELOPT_ENCRYPT };
+
+encrypt_enc_keyid(keyid, len)
+ unsigned char *keyid;
+ int len;
+{
+ encrypt_keyid(&ki[1], keyid, len);
+}
+
+encrypt_dec_keyid(keyid, len)
+ unsigned char *keyid;
+ int len;
+{
+ encrypt_keyid(&ki[0], keyid, len);
+}
+
+encrypt_keyid(kp, keyid, len)
+ struct key_info *kp;
+ unsigned char *keyid;
+ int len;
+{
+ Encryptions *ep;
+ unsigned char *strp, *cp;
+ int dir = kp->dir;
+ register int ret = 0;
+
+ if (!(ep = (*kp->getcrypt)(*kp->modep))) {
+ if (len == 0)
+ return;
+ kp->keylen = 0;
+ } else if (len == 0) {
+ /*
+ * Empty option, indicates a failure.
+ */
+ if (kp->keylen == 0)
+ return;
+ kp->keylen = 0;
+ if (ep->keyid)
+ (void)(*ep->keyid)(dir, kp->keyid, &kp->keylen);
+
+ } else if ((len != kp->keylen) ||
+ (memcmp(keyid, kp->keyid, len) != 0)) {
+ /*
+ * Length or contents are different
+ */
+ kp->keylen = len;
+ memmove(kp->keyid, keyid, len);
+ if (ep->keyid)
+ (void)(*ep->keyid)(dir, kp->keyid, &kp->keylen);
+ } else {
+ if (ep->keyid)
+ ret = (*ep->keyid)(dir, kp->keyid, &kp->keylen);
+ if ((ret == 0) && (dir == DIR_ENCRYPT) && autoencrypt)
+ encrypt_start_output(*kp->modep);
+ return;
+ }
+
+ encrypt_send_keyid(dir, kp->keyid, kp->keylen, 0);
+}
+
+ void
+encrypt_send_keyid(dir, keyid, keylen, saveit)
+ int dir;
+ unsigned char *keyid;
+ int keylen;
+ int saveit;
+{
+ unsigned char *strp;
+
+ str_keyid[3] = (dir == DIR_ENCRYPT)
+ ? ENCRYPT_ENC_KEYID : ENCRYPT_DEC_KEYID;
+ if (saveit) {
+ struct key_info *kp = &ki[(dir == DIR_ENCRYPT) ? 0 : 1];
+ memmove(kp->keyid, keyid, keylen);
+ kp->keylen = keylen;
+ }
+
+ for (strp = &str_keyid[4]; keylen > 0; --keylen) {
+ if ((*strp++ = *keyid++) == IAC)
+ *strp++ = IAC;
+ }
+ *strp++ = IAC;
+ *strp++ = SE;
+ net_write(str_keyid, strp - str_keyid);
+ printsub('>', &str_keyid[2], strp - str_keyid - 2);
+}
+
+ void
+encrypt_auto(on)
+ int on;
+{
+ if (on < 0)
+ autoencrypt ^= 1;
+ else
+ autoencrypt = on ? 1 : 0;
+}
+
+ void
+decrypt_auto(on)
+ int on;
+{
+ if (on < 0)
+ autodecrypt ^= 1;
+ else
+ autodecrypt = on ? 1 : 0;
+}
+
+ void
+encrypt_start_output(type)
+ int type;
+{
+ Encryptions *ep;
+ register unsigned char *p;
+ register int i;
+
+ if (!(ep = findencryption(type))) {
+ if (encrypt_debug_mode) {
+ printf(">>>%s: Can't encrypt with type %s (%d)\r\n",
+ Name,
+ ENCTYPE_NAME_OK(type)
+ ? ENCTYPE_NAME(type) : "(unknown)",
+ type);
+ }
+ return;
+ }
+ if (ep->start) {
+ i = (*ep->start)(DIR_ENCRYPT, Server);
+ if (encrypt_debug_mode) {
+ printf(">>>%s: Encrypt start: %s (%d) %s\r\n",
+ Name,
+ (i < 0) ? "failed" :
+ "initial negotiation in progress",
+ i, ENCTYPE_NAME(type));
+ }
+ if (i)
+ return;
+ }
+ p = str_start + 3;
+ *p++ = ENCRYPT_START;
+ for (i = 0; i < ki[0].keylen; ++i) {
+ if ((*p++ = ki[0].keyid[i]) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ net_write(str_start, p - str_start);
+ net_encrypt();
+ printsub('>', &str_start[2], p - &str_start[2]);
+ /*
+ * If we are already encrypting in some mode, then
+ * encrypt the ring (which includes our request) in
+ * the old mode, mark it all as "clear text" and then
+ * switch to the new mode.
+ */
+ encrypt_output = ep->output;
+ encrypt_mode = type;
+ if (encrypt_debug_mode)
+ printf(">>>%s: Started to encrypt output with type %s\r\n",
+ Name, ENCTYPE_NAME(type));
+ if (encrypt_verbose)
+ printf("[ Output is now encrypted with type %s ]\r\n",
+ ENCTYPE_NAME(type));
+}
+
+ void
+encrypt_send_end()
+{
+ if (!encrypt_output)
+ return;
+
+ str_end[3] = ENCRYPT_END;
+ net_write(str_end, sizeof(str_end));
+ net_encrypt();
+ printsub('>', &str_end[2], sizeof(str_end) - 2);
+ /*
+ * Encrypt the output buffer now because it will not be done by
+ * netflush...
+ */
+ encrypt_output = 0;
+ if (encrypt_debug_mode)
+ printf(">>>%s: Output is back to clear text\r\n", Name);
+ if (encrypt_verbose)
+ printf("[ Output is now clear text ]\r\n");
+}
+
+ void
+encrypt_send_request_start()
+{
+ register unsigned char *p;
+ register int i;
+
+ p = &str_start[3];
+ *p++ = ENCRYPT_REQSTART;
+ for (i = 0; i < ki[1].keylen; ++i) {
+ if ((*p++ = ki[1].keyid[i]) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ net_write(str_start, p - str_start);
+ printsub('>', &str_start[2], p - &str_start[2]);
+ if (encrypt_debug_mode)
+ printf(">>>%s: Request input to be encrypted\r\n", Name);
+}
+
+ void
+encrypt_send_request_end()
+{
+ str_end[3] = ENCRYPT_REQEND;
+ net_write(str_end, sizeof(str_end));
+ printsub('>', &str_end[2], sizeof(str_end) - 2);
+
+ if (encrypt_debug_mode)
+ printf(">>>%s: Request input to be clear text\r\n", Name);
+}
+
+ void
+encrypt_wait()
+{
+ register int encrypt, decrypt;
+ if (encrypt_debug_mode)
+ printf(">>>%s: in encrypt_wait\r\n", Name);
+ if (!havesessionkey || !(I_SUPPORT_ENCRYPT & remote_supports_decrypt))
+ return;
+ while (autoencrypt && !encrypt_output)
+ if (telnet_spin())
+ return;
+}
+
+ void
+encrypt_debug(mode)
+ int mode;
+{
+ encrypt_debug_mode = mode;
+}
+
+ void
+encrypt_gen_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ char tbuf[16], *cp;
+
+ cnt -= 2;
+ data += 2;
+ buf[buflen-1] = '\0';
+ buf[buflen-2] = '*';
+ buflen -= 2;;
+ for (; cnt > 0; cnt--, data++) {
+ sprintf(tbuf, " %d", *data);
+ for (cp = tbuf; *cp && buflen > 0; --buflen)
+ *buf++ = *cp++;
+ if (buflen <= 0)
+ return;
+ }
+ *buf = '\0';
+}
+
+ void
+encrypt_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ Encryptions *ep;
+ register int type = data[1];
+
+ for (ep = encryptions; ep->type && ep->type != type; ep++)
+ ;
+
+ if (ep->printsub)
+ (*ep->printsub)(data, cnt, buf, buflen);
+ else
+ encrypt_gen_printsub(data, cnt, buf, buflen);
+}
+#endif /* ENCRYPTION */
diff --git a/contrib/telnet/libtelnet/encrypt.h b/contrib/telnet/libtelnet/encrypt.h
new file mode 100644
index 0000000..e0ae385
--- /dev/null
+++ b/contrib/telnet/libtelnet/encrypt.h
@@ -0,0 +1,108 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)encrypt.h 8.1 (Berkeley) 6/4/93
+ */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#ifdef ENCRYPTION
+# ifndef __ENCRYPTION__
+# define __ENCRYPTION__
+
+#define DIR_DECRYPT 1
+#define DIR_ENCRYPT 2
+
+typedef unsigned char Block[8];
+typedef unsigned char *BlockT;
+typedef struct { Block _; } Schedule[16];
+
+#define VALIDKEY(key) ( key[0] | key[1] | key[2] | key[3] | \
+ key[4] | key[5] | key[6] | key[7])
+
+#define SAMEKEY(k1, k2) (!bcmp((void *)k1, (void *)k2, sizeof(Block)))
+
+typedef struct {
+ short type;
+ int length;
+ unsigned char *data;
+} Session_Key;
+
+# if !defined(P)
+# ifdef __STDC__
+# define P(x) x
+# else
+# define P(x) ()
+# endif
+# endif
+
+typedef struct {
+ char *name;
+ int type;
+ void (*output) P((unsigned char *, int));
+ int (*input) P((int));
+ void (*init) P((int));
+ int (*start) P((int, int));
+ int (*is) P((unsigned char *, int));
+ int (*reply) P((unsigned char *, int));
+ void (*session) P((Session_Key *, int));
+ int (*keyid) P((int, unsigned char *, int *));
+ void (*printsub) P((unsigned char *, int, unsigned char *, int));
+} Encryptions;
+
+#define SK_DES 1 /* Matched Kerberos v5 KEYTYPE_DES */
+
+#include "enc-proto.h"
+
+extern int encrypt_debug_mode;
+extern int (*decrypt_input) P((int));
+extern void (*encrypt_output) P((unsigned char *, int));
+# endif /* __ENCRYPTION__ */
+#endif /* ENCRYPTION */
diff --git a/contrib/telnet/libtelnet/genget.c b/contrib/telnet/libtelnet/genget.c
new file mode 100644
index 0000000..7be3846
--- /dev/null
+++ b/contrib/telnet/libtelnet/genget.c
@@ -0,0 +1,105 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)genget.c 8.2 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+
+#include <ctype.h>
+
+#define LOWER(x) (isupper(x) ? tolower(x) : (x))
+/*
+ * The prefix function returns 0 if *s1 is not a prefix
+ * of *s2. If *s1 exactly matches *s2, the negative of
+ * the length is returned. If *s1 is a prefix of *s2,
+ * the length of *s1 is returned.
+ */
+ int
+isprefix(s1, s2)
+ register char *s1, *s2;
+{
+ register int n = 0;
+ char *os1;
+ register char c1, c2;
+
+ if (*s1 == '\0')
+ return(-1);
+ os1 = s1;
+ c1 = *s1;
+ c2 = *s2;
+ while (LOWER(c1) == LOWER(c2)) {
+ if (c1 == '\0')
+ break;
+ c1 = *++s1;
+ c2 = *++s2;
+ }
+ return(*s1 ? 0 : (*s2 ? (s1 - os1) : (os1 - s1)));
+}
+
+static char *ambiguous; /* special return value for command routines */
+
+ char **
+genget(name, table, stlen)
+ char *name; /* name to match */
+ char **table; /* name entry in table */
+ int stlen;
+{
+ register char **c, **found;
+ register int n;
+
+ if (name == 0)
+ return 0;
+
+ found = 0;
+ for (c = table; *c != 0; c = (char **)((char *)c + stlen)) {
+ if ((n = isprefix(name, *c)) == 0)
+ continue;
+ if (n < 0) /* exact match */
+ return(c);
+ if (found)
+ return(&ambiguous);
+ found = c;
+ }
+ return(found);
+}
+
+/*
+ * Function call version of Ambiguous()
+ */
+ int
+Ambiguous(s)
+ char *s;
+{
+ return((char **)s == &ambiguous);
+}
diff --git a/contrib/telnet/libtelnet/getent.c b/contrib/telnet/libtelnet/getent.c
new file mode 100644
index 0000000..05626f1
--- /dev/null
+++ b/contrib/telnet/libtelnet/getent.c
@@ -0,0 +1,68 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)getent.c 8.2 (Berkeley) 12/15/93";
+#endif /* not lint */
+
+static char *area;
+
+/*ARGSUSED*/
+getent(cp, name)
+char *cp, *name;
+{
+#ifdef HAS_CGETENT
+ char *dba[2];
+
+ dba[0] = "/etc/gettytab";
+ dba[1] = 0;
+ return((cgetent(&area, dba, name) == 0) ? 1 : 0);
+#else
+ return(0);
+#endif
+}
+
+#ifndef SOLARIS
+/*ARGSUSED*/
+char *
+getstr(id, cpp)
+char *id, **cpp;
+{
+# ifdef HAS_CGETENT
+ char *answer;
+ return((cgetstr(area, id, &answer) > 0) ? answer : 0);
+# else
+ return(0);
+# endif
+}
+#endif
diff --git a/contrib/telnet/libtelnet/kerberos.c b/contrib/telnet/libtelnet/kerberos.c
new file mode 100644
index 0000000..dbf4956
--- /dev/null
+++ b/contrib/telnet/libtelnet/kerberos.c
@@ -0,0 +1,560 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)kerberos.c 8.3 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#ifdef KRB4
+#include <sys/types.h>
+#include <arpa/telnet.h>
+#include <stdio.h>
+#include <des.h> /* BSD wont include this in krb.h, so we do it here */
+#include <krb.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+#include "encrypt.h"
+#include "auth.h"
+#include "misc.h"
+
+int kerberos4_cksum P((unsigned char *, int));
+int krb_mk_req P((KTEXT, char *, char *, char *, u_long));
+int krb_rd_req P((KTEXT, char *, char *, u_long, AUTH_DAT *, char *));
+int krb_kntoln P((AUTH_DAT *, char *));
+int krb_get_cred P((char *, char *, char *, CREDENTIALS *));
+int krb_get_lrealm P((char *, int));
+int kuserok P((AUTH_DAT *, char *));
+
+extern auth_debug_mode;
+
+static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0,
+ AUTHTYPE_KERBEROS_V4, };
+static unsigned char str_name[1024] = { IAC, SB, TELOPT_AUTHENTICATION,
+ TELQUAL_NAME, };
+
+#define KRB_AUTH 0 /* Authentication data follows */
+#define KRB_REJECT 1 /* Rejected (reason might follow) */
+#define KRB_ACCEPT 2 /* Accepted */
+#define KRB_CHALLENGE 3 /* Challenge for mutual auth. */
+#define KRB_RESPONSE 4 /* Response for mutual auth. */
+
+#define KRB_SERVICE_NAME "rcmd"
+
+static KTEXT_ST auth;
+static char name[ANAME_SZ];
+static AUTH_DAT adat = { 0 };
+#ifdef ENCRYPTION
+static Block session_key = { 0 };
+static Schedule sched;
+static Block challenge = { 0 };
+#endif /* ENCRYPTION */
+
+ static int
+Data(ap, type, d, c)
+ Authenticator *ap;
+ int type;
+ void *d;
+ int c;
+{
+ unsigned char *p = str_data + 4;
+ unsigned char *cd = (unsigned char *)d;
+
+ if (c == -1)
+ c = strlen((char *)cd);
+
+ if (auth_debug_mode) {
+ printf("%s:%d: [%d] (%d)",
+ str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY",
+ str_data[3],
+ type, c);
+ printd(d, c);
+ printf("\r\n");
+ }
+ *p++ = ap->type;
+ *p++ = ap->way;
+ *p++ = type;
+ while (c-- > 0) {
+ if ((*p++ = *cd++) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ if (str_data[3] == TELQUAL_IS)
+ printsub('>', &str_data[2], p - (&str_data[2]));
+ return(net_write(str_data, p - str_data));
+}
+
+ int
+kerberos4_init(ap, server)
+ Authenticator *ap;
+ int server;
+{
+ FILE *fp;
+
+ if (server) {
+ str_data[3] = TELQUAL_REPLY;
+ if ((fp = fopen(KEYFILE, "r")) == NULL)
+ return(0);
+ fclose(fp);
+ } else {
+ str_data[3] = TELQUAL_IS;
+ }
+ return(1);
+}
+
+char dst_realm_buf[REALM_SZ], *dest_realm = NULL;
+int dst_realm_sz = REALM_SZ;
+
+ int
+kerberos4_send(ap)
+ Authenticator *ap;
+{
+ KTEXT_ST auth;
+#ifdef ENCRYPTION
+ Block enckey;
+#endif /* ENCRYPTION */
+ char instance[INST_SZ];
+ char *realm;
+ char *krb_realmofhost();
+ char *krb_get_phost();
+ CREDENTIALS cred;
+ int r;
+
+ printf("[ Trying KERBEROS4 ... ]\n");
+ if (!UserNameRequested) {
+ if (auth_debug_mode) {
+ printf("Kerberos V4: no user name supplied\r\n");
+ }
+ return(0);
+ }
+
+ memset(instance, 0, sizeof(instance));
+
+ if (realm = krb_get_phost(RemoteHostName))
+ strncpy(instance, realm, sizeof(instance));
+
+ instance[sizeof(instance)-1] = '\0';
+
+ realm = dest_realm ? dest_realm : krb_realmofhost(RemoteHostName);
+
+ if (!realm) {
+ printf("Kerberos V4: no realm for %s\r\n", RemoteHostName);
+ return(0);
+ }
+ if (r = krb_mk_req(&auth, KRB_SERVICE_NAME, instance, realm, 0L)) {
+ printf("mk_req failed: %s\r\n", krb_err_txt[r]);
+ return(0);
+ }
+ if (r = krb_get_cred(KRB_SERVICE_NAME, instance, realm, &cred)) {
+ printf("get_cred failed: %s\r\n", krb_err_txt[r]);
+ return(0);
+ }
+ if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) {
+ if (auth_debug_mode)
+ printf("Not enough room for user name\r\n");
+ return(0);
+ }
+ if (auth_debug_mode)
+ printf("Sent %d bytes of authentication data\r\n", auth.length);
+ if (!Data(ap, KRB_AUTH, (void *)auth.dat, auth.length)) {
+ if (auth_debug_mode)
+ printf("Not enough room for authentication data\r\n");
+ return(0);
+ }
+#ifdef ENCRYPTION
+ /*
+ * If we are doing mutual authentication, get set up to send
+ * the challenge, and verify it when the response comes back.
+ */
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
+ register int i;
+
+ des_key_sched(cred.session, sched);
+ des_init_random_number_generator(cred.session);
+ des_new_random_key(session_key);
+ des_ecb_encrypt(session_key, session_key, sched, 0);
+ des_ecb_encrypt(session_key, challenge, sched, 0);
+ /*
+ * Increment the challenge by 1, and encrypt it for
+ * later comparison.
+ */
+ for (i = 7; i >= 0; --i) {
+ register int x;
+ x = (unsigned int)challenge[i] + 1;
+ challenge[i] = x; /* ignore overflow */
+ if (x < 256) /* if no overflow, all done */
+ break;
+ }
+ des_ecb_encrypt(challenge, challenge, sched, 1);
+ }
+#endif /* ENCRYPTION */
+
+ if (auth_debug_mode) {
+ printf("CK: %d:", kerberos4_cksum(auth.dat, auth.length));
+ printd(auth.dat, auth.length);
+ printf("\r\n");
+ printf("Sent Kerberos V4 credentials to server\r\n");
+ }
+ return(1);
+}
+
+ void
+kerberos4_is(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+#ifdef ENCRYPTION
+ Session_Key skey;
+ Block datablock;
+#endif /* ENCRYPTION */
+ char realm[REALM_SZ];
+ char instance[INST_SZ];
+ int r;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case KRB_AUTH:
+ if (krb_get_lrealm(realm, 1) != KSUCCESS) {
+ Data(ap, KRB_REJECT, (void *)"No local V4 Realm.", -1);
+ auth_finished(ap, AUTH_REJECT);
+ if (auth_debug_mode)
+ printf("No local realm\r\n");
+ return;
+ }
+ memmove((void *)auth.dat, (void *)data, auth.length = cnt);
+ if (auth_debug_mode) {
+ printf("Got %d bytes of authentication data\r\n", cnt);
+ printf("CK: %d:", kerberos4_cksum(auth.dat, auth.length));
+ printd(auth.dat, auth.length);
+ printf("\r\n");
+ }
+ instance[0] = '*'; instance[1] = 0;
+ if (r = krb_rd_req(&auth, KRB_SERVICE_NAME,
+ instance, 0, &adat, "")) {
+ if (auth_debug_mode)
+ printf("Kerberos failed him as %s\r\n", name);
+ Data(ap, KRB_REJECT, (void *)krb_err_txt[r], -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+#ifdef ENCRYPTION
+ memmove((void *)session_key, (void *)adat.session, sizeof(Block));
+#endif /* ENCRYPTION */
+ krb_kntoln(&adat, name);
+
+ if (UserNameRequested && !kuserok(&adat, UserNameRequested))
+ Data(ap, KRB_ACCEPT, (void *)0, 0);
+ else
+ Data(ap, KRB_REJECT,
+ (void *)"user is not authorized", -1);
+ auth_finished(ap, AUTH_USER);
+ break;
+
+ case KRB_CHALLENGE:
+#ifndef ENCRYPTION
+ Data(ap, KRB_RESPONSE, (void *)0, 0);
+#else /* ENCRYPTION */
+ if (!VALIDKEY(session_key)) {
+ /*
+ * We don't have a valid session key, so just
+ * send back a response with an empty session
+ * key.
+ */
+ Data(ap, KRB_RESPONSE, (void *)0, 0);
+ break;
+ }
+
+ /*
+ * Initialize the random number generator since it's
+ * used later on by the encryption routine.
+ */
+ des_init_random_number_generator(session_key);
+ des_key_sched(session_key, sched);
+ memmove((void *)datablock, (void *)data, sizeof(Block));
+ /*
+ * Take the received encrypted challenge, and encrypt
+ * it again to get a unique session_key for the
+ * ENCRYPT option.
+ */
+ des_ecb_encrypt(datablock, session_key, sched, 1);
+ skey.type = SK_DES;
+ skey.length = 8;
+ skey.data = session_key;
+ encrypt_session_key(&skey, 1);
+ /*
+ * Now decrypt the received encrypted challenge,
+ * increment by one, re-encrypt it and send it back.
+ */
+ des_ecb_encrypt(datablock, challenge, sched, 0);
+ for (r = 7; r >= 0; r--) {
+ register int t;
+ t = (unsigned int)challenge[r] + 1;
+ challenge[r] = t; /* ignore overflow */
+ if (t < 256) /* if no overflow, all done */
+ break;
+ }
+ des_ecb_encrypt(challenge, challenge, sched, 1);
+ Data(ap, KRB_RESPONSE, (void *)challenge, sizeof(challenge));
+#endif /* ENCRYPTION */
+ break;
+
+ default:
+ if (auth_debug_mode)
+ printf("Unknown Kerberos option %d\r\n", data[-1]);
+ Data(ap, KRB_REJECT, 0, 0);
+ break;
+ }
+}
+
+ void
+kerberos4_reply(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+#ifdef ENCRYPTION
+ Session_Key skey;
+#endif /* ENCRYPTION */
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case KRB_REJECT:
+ if (cnt > 0) {
+ printf("[ Kerberos V4 refuses authentication because %.*s ]\r\n",
+ cnt, data);
+ } else
+ printf("[ Kerberos V4 refuses authentication ]\r\n");
+ auth_send_retry();
+ return;
+ case KRB_ACCEPT:
+ printf("[ Kerberos V4 accepts you ]\n");
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
+ /*
+ * Send over the encrypted challenge.
+ */
+#ifndef ENCRYPTION
+ Data(ap, KRB_CHALLENGE, (void *)0, 0);
+#else /* ENCRYPTION */
+ Data(ap, KRB_CHALLENGE, (void *)session_key,
+ sizeof(session_key));
+ des_ecb_encrypt(session_key, session_key, sched, 1);
+ skey.type = SK_DES;
+ skey.length = 8;
+ skey.data = session_key;
+ encrypt_session_key(&skey, 0);
+#endif /* ENCRYPTION */
+ return;
+ }
+ auth_finished(ap, AUTH_USER);
+ return;
+ case KRB_RESPONSE:
+#ifdef ENCRYPTION
+ /*
+ * Verify that the response to the challenge is correct.
+ */
+ if ((cnt != sizeof(Block)) ||
+ (0 != memcmp((void *)data, (void *)challenge,
+ sizeof(challenge))))
+ {
+#endif /* ENCRYPTION */
+ printf("[ Kerberos V4 challenge failed!!! ]\r\n");
+ auth_send_retry();
+ return;
+#ifdef ENCRYPTION
+ }
+ printf("[ Kerberos V4 challenge successful ]\r\n");
+ auth_finished(ap, AUTH_USER);
+#endif /* ENCRYPTION */
+ break;
+ default:
+ if (auth_debug_mode)
+ printf("Unknown Kerberos option %d\r\n", data[-1]);
+ return;
+ }
+}
+
+ int
+kerberos4_status(ap, name, level)
+ Authenticator *ap;
+ char *name;
+ int level;
+{
+ if (level < AUTH_USER)
+ return(level);
+
+ if (UserNameRequested && !kuserok(&adat, UserNameRequested)) {
+ strcpy(name, UserNameRequested);
+ return(AUTH_VALID);
+ } else
+ return(AUTH_USER);
+}
+
+#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);}
+#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);}
+
+ void
+kerberos4_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ char lbuf[32];
+ register int i;
+
+ buf[buflen-1] = '\0'; /* make sure its NULL terminated */
+ buflen -= 1;
+
+ switch(data[3]) {
+ case KRB_REJECT: /* Rejected (reason might follow) */
+ strncpy((char *)buf, " REJECT ", buflen);
+ goto common;
+
+ case KRB_ACCEPT: /* Accepted (name might follow) */
+ strncpy((char *)buf, " ACCEPT ", buflen);
+ common:
+ BUMP(buf, buflen);
+ if (cnt <= 4)
+ break;
+ ADDC(buf, buflen, '"');
+ for (i = 4; i < cnt; i++)
+ ADDC(buf, buflen, data[i]);
+ ADDC(buf, buflen, '"');
+ ADDC(buf, buflen, '\0');
+ break;
+
+ case KRB_AUTH: /* Authentication data follows */
+ strncpy((char *)buf, " AUTH", buflen);
+ goto common2;
+
+ case KRB_CHALLENGE:
+ strncpy((char *)buf, " CHALLENGE", buflen);
+ goto common2;
+
+ case KRB_RESPONSE:
+ strncpy((char *)buf, " RESPONSE", buflen);
+ goto common2;
+
+ default:
+ sprintf(lbuf, " %d (unknown)", data[3]);
+ strncpy((char *)buf, lbuf, buflen);
+ common2:
+ BUMP(buf, buflen);
+ for (i = 4; i < cnt; i++) {
+ sprintf(lbuf, " %d", data[i]);
+ strncpy((char *)buf, lbuf, buflen);
+ BUMP(buf, buflen);
+ }
+ break;
+ }
+}
+
+ int
+kerberos4_cksum(d, n)
+ unsigned char *d;
+ int n;
+{
+ int ck = 0;
+
+ /*
+ * A comment is probably needed here for those not
+ * well versed in the "C" language. Yes, this is
+ * supposed to be a "switch" with the body of the
+ * "switch" being a "while" statement. The whole
+ * purpose of the switch is to allow us to jump into
+ * the middle of the while() loop, and then not have
+ * to do any more switch()s.
+ *
+ * Some compilers will spit out a warning message
+ * about the loop not being entered at the top.
+ */
+ switch (n&03)
+ while (n > 0) {
+ case 0:
+ ck ^= (int)*d++ << 24;
+ --n;
+ case 3:
+ ck ^= (int)*d++ << 16;
+ --n;
+ case 2:
+ ck ^= (int)*d++ << 8;
+ --n;
+ case 1:
+ ck ^= (int)*d++;
+ --n;
+ }
+ return(ck);
+}
+#endif
+
+#ifdef notdef
+
+prkey(msg, key)
+ char *msg;
+ unsigned char *key;
+{
+ register int i;
+ printf("%s:", msg);
+ for (i = 0; i < 8; i++)
+ printf(" %3d", key[i]);
+ printf("\r\n");
+}
+#endif
diff --git a/contrib/telnet/libtelnet/kerberos5.c b/contrib/telnet/libtelnet/kerberos5.c
new file mode 100644
index 0000000..bcf1a9f
--- /dev/null
+++ b/contrib/telnet/libtelnet/kerberos5.c
@@ -0,0 +1,764 @@
+/*
+ * $Source: /mit/krb5/.cvsroot/src/appl/telnet/libtelnet/kerberos5.c,v $
+ * $Author: tytso $
+ * $Id: kerberos5.c,v 1.1 1997/09/04 06:11:15 markm Exp $
+ */
+
+#if !defined(lint) && !defined(SABER)
+static
+#ifdef __STDC__
+const
+#endif
+char rcsid_kerberos5_c[] = "$Id: kerberos5.c,v 1.1 1997/09/04 06:11:15 markm Exp $";
+#endif /* lint */
+
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)kerberos5.c 8.3 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America may
+ * require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+
+#ifdef KRB5
+#include <arpa/telnet.h>
+#include <stdio.h>
+#include <krb5/krb5.h>
+#include <krb5/asn1.h>
+#include <krb5/crc-32.h>
+#include <krb5/los-proto.h>
+#include <krb5/ext-proto.h>
+#include <com_err.h>
+#include <netdb.h>
+#include <ctype.h>
+
+/* kerberos 5 include files (ext-proto.h) will get an appropriate stdlib.h
+ and string.h/strings.h */
+
+#include "encrypt.h"
+#include "auth.h"
+#include "misc.h"
+
+extern auth_debug_mode;
+
+#ifdef FORWARD
+int forward_flags = 0; /* Flags get set in telnet/main.c on -f and -F */
+
+/* These values need to be the same as those defined in telnet/main.c. */
+/* Either define them in both places, or put in some common header file. */
+#define OPTS_FORWARD_CREDS 0x00000002
+#define OPTS_FORWARDABLE_CREDS 0x00000001
+
+void kerberos5_forward();
+
+#endif /* FORWARD */
+
+static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0,
+ AUTHTYPE_KERBEROS_V5, };
+/*static unsigned char str_name[1024] = { IAC, SB, TELOPT_AUTHENTICATION,
+ TELQUAL_NAME, };*/
+
+#define KRB_AUTH 0 /* Authentication data follows */
+#define KRB_REJECT 1 /* Rejected (reason might follow) */
+#define KRB_ACCEPT 2 /* Accepted */
+#define KRB_RESPONSE 3 /* Response for mutual auth. */
+
+#ifdef FORWARD
+#define KRB_FORWARD 4 /* Forwarded credentials follow */
+#define KRB_FORWARD_ACCEPT 5 /* Forwarded credentials accepted */
+#define KRB_FORWARD_REJECT 6 /* Forwarded credentials rejected */
+#endif /* FORWARD */
+
+static krb5_data auth;
+ /* telnetd gets session key from here */
+static krb5_tkt_authent *authdat = NULL;
+/* telnet matches the AP_REQ and AP_REP with this */
+static krb5_authenticator authenticator;
+
+/* some compilers can't hack void *, so we use the Kerberos krb5_pointer,
+ which is either void * or char *, depending on the compiler. */
+
+#define Voidptr krb5_pointer
+
+Block session_key;
+
+ static int
+Data(ap, type, d, c)
+ Authenticator *ap;
+ int type;
+ Voidptr d;
+ int c;
+{
+ unsigned char *p = str_data + 4;
+ unsigned char *cd = (unsigned char *)d;
+
+ if (c == -1)
+ c = strlen((char *)cd);
+
+ if (auth_debug_mode) {
+ printf("%s:%d: [%d] (%d)",
+ str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY",
+ str_data[3],
+ type, c);
+ printd(d, c);
+ printf("\r\n");
+ }
+ *p++ = ap->type;
+ *p++ = ap->way;
+ *p++ = type;
+ while (c-- > 0) {
+ if ((*p++ = *cd++) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ if (str_data[3] == TELQUAL_IS)
+ printsub('>', &str_data[2], p - &str_data[2]);
+ return(net_write(str_data, p - str_data));
+}
+
+ int
+kerberos5_init(ap, server)
+ Authenticator *ap;
+ int server;
+{
+ if (server)
+ str_data[3] = TELQUAL_REPLY;
+ else
+ str_data[3] = TELQUAL_IS;
+ krb5_init_ets();
+ return(1);
+}
+
+ int
+kerberos5_send(ap)
+ Authenticator *ap;
+{
+ char **realms;
+ char *name;
+ char *p1, *p2;
+ krb5_checksum ksum;
+ krb5_octet sum[CRC32_CKSUM_LENGTH];
+ krb5_principal server;
+ krb5_error_code r;
+ krb5_ccache ccache;
+ krb5_creds creds; /* telnet gets session key from here */
+ extern krb5_flags krb5_kdc_default_options;
+ int ap_opts;
+
+#ifdef ENCRYPTION
+ krb5_keyblock *newkey = 0;
+#endif /* ENCRYPTION */
+
+ ksum.checksum_type = CKSUMTYPE_CRC32;
+ ksum.contents = sum;
+ ksum.length = sizeof(sum);
+ memset((Voidptr )sum, 0, sizeof(sum));
+
+ if (!UserNameRequested) {
+ if (auth_debug_mode) {
+ printf("Kerberos V5: no user name supplied\r\n");
+ }
+ return(0);
+ }
+
+ if (r = krb5_cc_default(&ccache)) {
+ if (auth_debug_mode) {
+ printf("Kerberos V5: could not get default ccache\r\n");
+ }
+ return(0);
+ }
+
+ if ((name = malloc(strlen(RemoteHostName)+1)) == NULL) {
+ if (auth_debug_mode)
+ printf("Out of memory for hostname in Kerberos V5\r\n");
+ return(0);
+ }
+
+ if (r = krb5_get_host_realm(RemoteHostName, &realms)) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: no realm for %s\r\n", RemoteHostName);
+ free(name);
+ return(0);
+ }
+
+ p1 = RemoteHostName;
+ p2 = name;
+
+ while (*p2 = *p1++) {
+ if (isupper(*p2))
+ *p2 |= 040;
+ ++p2;
+ }
+
+ if (r = krb5_build_principal_ext(&server,
+ strlen(realms[0]), realms[0],
+ 4, "host",
+ p2 - name, name,
+ 0)) {
+ if (auth_debug_mode) {
+ printf("Kerberos V5: failure setting up principal (%s)\r\n",
+ error_message(r));
+ }
+ free(name);
+ krb5_free_host_realm(realms);
+ return(0);
+ }
+
+
+ memset((char *)&creds, 0, sizeof(creds));
+ creds.server = server;
+
+ if (r = krb5_cc_get_principal(ccache, &creds.client)) {
+ if (auth_debug_mode) {
+ printf("Kerberos V5: failure on principal (%s)\r\n",
+ error_message(r));
+ }
+ free(name);
+ krb5_free_principal(server);
+ krb5_free_host_realm(realms);
+ return(0);
+ }
+
+ if (r = krb5_get_credentials(krb5_kdc_default_options, ccache, &creds)) {
+ if (auth_debug_mode) {
+ printf("Kerberos V5: failure on credentials(%d)\r\n",r);
+ }
+ free(name);
+ krb5_free_host_realm(realms);
+ krb5_free_principal(server);
+ return(0);
+ }
+
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL)
+ ap_opts = AP_OPTS_MUTUAL_REQUIRED;
+ else
+ ap_opts = 0;
+
+ r = krb5_mk_req_extended(ap_opts, &ksum, krb5_kdc_default_options, 0,
+#ifdef ENCRYPTION
+ &newkey,
+#else /* ENCRYPTION */
+ 0,
+#endif /* ENCRYPTION */
+ ccache, &creds, &authenticator, &auth);
+ /* don't let the key get freed if we clean up the authenticator */
+ authenticator.subkey = 0;
+
+ free(name);
+ krb5_free_host_realm(realms);
+ krb5_free_principal(server);
+#ifdef ENCRYPTION
+ if (newkey) {
+ /* keep the key in our private storage, but don't use it
+ yet---see kerberos5_reply() below */
+ if (newkey->keytype != KEYTYPE_DES) {
+ if (creds.keyblock.keytype == KEYTYPE_DES)
+ /* use the session key in credentials instead */
+ memmove((char *)session_key,
+ (char *)creds.keyblock.contents, sizeof(Block));
+ else
+ /* XXX ? */;
+ } else {
+ memmove((char *)session_key, (char *)newkey->contents,
+ sizeof(Block));
+ }
+ krb5_free_keyblock(newkey);
+ }
+#endif /* ENCRYPTION */
+ if (r) {
+ if (auth_debug_mode) {
+ printf("Kerberos V5: mk_req failed (%s)\r\n",
+ error_message(r));
+ }
+ return(0);
+ }
+
+ if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) {
+ if (auth_debug_mode)
+ printf("Not enough room for user name\r\n");
+ return(0);
+ }
+ if (!Data(ap, KRB_AUTH, auth.data, auth.length)) {
+ if (auth_debug_mode)
+ printf("Not enough room for authentication data\r\n");
+ return(0);
+ }
+ if (auth_debug_mode) {
+ printf("Sent Kerberos V5 credentials to server\r\n");
+ }
+ return(1);
+}
+
+ void
+kerberos5_is(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ int r;
+ struct hostent *hp;
+ char *p1, *p2;
+ static char *realm = NULL;
+ krb5_principal server;
+ krb5_ap_rep_enc_part reply;
+ krb5_data outbuf;
+#ifdef ENCRYPTION
+ Session_Key skey;
+#endif /* ENCRYPTION */
+ char *name;
+ char *getenv();
+ krb5_data inbuf;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case KRB_AUTH:
+ auth.data = (char *)data;
+ auth.length = cnt;
+
+ if (!(hp = gethostbyname(LocalHostName))) {
+ if (auth_debug_mode)
+ printf("Cannot resolve local host name\r\n");
+ Data(ap, KRB_REJECT, "Unknown local hostname.", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+
+ if (!realm && (krb5_get_default_realm(&realm))) {
+ if (auth_debug_mode)
+ printf("Could not get default realm\r\n");
+ Data(ap, KRB_REJECT, "Could not get default realm.", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+
+ if ((name = malloc(strlen(hp->h_name)+1)) == NULL) {
+ if (auth_debug_mode)
+ printf("Out of memory for hostname in Kerberos V5\r\n");
+ Data(ap, KRB_REJECT, "Out of memory.", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+
+ p1 = hp->h_name;
+ p2 = name;
+
+ while (*p2 = *p1++) {
+ if (isupper(*p2))
+ *p2 |= 040;
+ ++p2;
+ }
+
+ if (authdat)
+ krb5_free_tkt_authent(authdat);
+
+ r = krb5_build_principal_ext(&server,
+ strlen(realm), realm,
+ 4, "host",
+ p2 - name, name,
+ 0);
+ if (!r) {
+ r = krb5_rd_req_simple(&auth, server, 0, &authdat);
+ krb5_free_principal(server);
+ }
+ if (r) {
+ char errbuf[128];
+
+ errout:
+ authdat = 0;
+ (void) strcpy(errbuf, "Read req failed: ");
+ (void) strcat(errbuf, error_message(r));
+ Data(ap, KRB_REJECT, errbuf, -1);
+ if (auth_debug_mode)
+ printf("%s\r\n", errbuf);
+ return;
+ }
+ free(name);
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
+ /* do ap_rep stuff here */
+ reply.ctime = authdat->authenticator->ctime;
+ reply.cusec = authdat->authenticator->cusec;
+ reply.subkey = 0; /* use the one he gave us, so don't
+ need to return one here */
+ reply.seq_number = 0; /* we don't do seq #'s. */
+
+ if (r = krb5_mk_rep(&reply,
+ authdat->authenticator->subkey ?
+ authdat->authenticator->subkey :
+ authdat->ticket->enc_part2->session,
+ &outbuf)) {
+ goto errout;
+ }
+ Data(ap, KRB_RESPONSE, outbuf.data, outbuf.length);
+ }
+ if (krb5_unparse_name(authdat->ticket->enc_part2 ->client,
+ &name))
+ name = 0;
+ Data(ap, KRB_ACCEPT, name, name ? -1 : 0);
+ if (auth_debug_mode) {
+ printf("Kerberos5 identifies him as ``%s''\r\n",
+ name ? name : "");
+ }
+ auth_finished(ap, AUTH_USER);
+
+ free(name);
+ if (authdat->authenticator->subkey &&
+ authdat->authenticator->subkey->keytype == KEYTYPE_DES) {
+ memmove((Voidptr )session_key,
+ (Voidptr )authdat->authenticator->subkey->contents,
+ sizeof(Block));
+ } else if (authdat->ticket->enc_part2->session->keytype ==
+ KEYTYPE_DES) {
+ memmove((Voidptr )session_key,
+ (Voidptr )authdat->ticket->enc_part2->session->contents,
+ sizeof(Block));
+ } else
+ break;
+
+#ifdef ENCRYPTION
+ skey.type = SK_DES;
+ skey.length = 8;
+ skey.data = session_key;
+ encrypt_session_key(&skey, 1);
+#endif /* ENCRYPTION */
+ break;
+#ifdef FORWARD
+ case KRB_FORWARD:
+ inbuf.data = (char *)data;
+ inbuf.length = cnt;
+ if (r = rd_and_store_for_creds(&inbuf, authdat->ticket,
+ UserNameRequested)) {
+ char errbuf[128];
+
+ (void) strcpy(errbuf, "Read forwarded creds failed: ");
+ (void) strcat(errbuf, error_message(r));
+ Data(ap, KRB_FORWARD_REJECT, errbuf, -1);
+ if (auth_debug_mode)
+ printf("Could not read forwarded credentials\r\n");
+ }
+ else
+ Data(ap, KRB_FORWARD_ACCEPT, 0, 0);
+ if (auth_debug_mode)
+ printf("Forwarded credentials obtained\r\n");
+ break;
+#endif /* FORWARD */
+ default:
+ if (auth_debug_mode)
+ printf("Unknown Kerberos option %d\r\n", data[-1]);
+ Data(ap, KRB_REJECT, 0, 0);
+ break;
+ }
+}
+
+ void
+kerberos5_reply(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+ static int mutual_complete = 0;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case KRB_REJECT:
+ if (cnt > 0) {
+ printf("[ Kerberos V5 refuses authentication because %.*s ]\r\n",
+ cnt, data);
+ } else
+ printf("[ Kerberos V5 refuses authentication ]\r\n");
+ auth_send_retry();
+ return;
+ case KRB_ACCEPT:
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL &&
+ !mutual_complete) {
+ printf("[ Kerberos V5 accepted you, but didn't provide mutual authentication! ]\n");
+ auth_send_retry();
+ return;
+ }
+ if (cnt)
+ printf("[ Kerberos V5 accepts you as ``%.*s'' ]\n", cnt, data);
+ else
+ printf("[ Kerberos V5 accepts you ]\n");
+ auth_finished(ap, AUTH_USER);
+#ifdef FORWARD
+ if (forward_flags & OPTS_FORWARD_CREDS)
+ kerberos5_forward(ap);
+#endif /* FORWARD */
+ break;
+ case KRB_RESPONSE:
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
+ /* the rest of the reply should contain a krb_ap_rep */
+ krb5_ap_rep_enc_part *reply;
+ krb5_data inbuf;
+ krb5_error_code r;
+ krb5_keyblock tmpkey;
+
+ inbuf.length = cnt;
+ inbuf.data = (char *)data;
+
+ tmpkey.keytype = KEYTYPE_DES;
+ tmpkey.contents = session_key;
+ tmpkey.length = sizeof(Block);
+
+ if (r = krb5_rd_rep(&inbuf, &tmpkey, &reply)) {
+ printf("[ Mutual authentication failed: %s ]\n",
+ error_message(r));
+ auth_send_retry();
+ return;
+ }
+ if (reply->ctime != authenticator.ctime ||
+ reply->cusec != authenticator.cusec) {
+ printf("[ Mutual authentication failed (mismatched KRB_AP_REP) ]\n");
+ auth_send_retry();
+ return;
+ }
+ krb5_free_ap_rep_enc_part(reply);
+#ifdef ENCRYPTION
+ skey.type = SK_DES;
+ skey.length = 8;
+ skey.data = session_key;
+ encrypt_session_key(&skey, 0);
+#endif /* ENCRYPTION */
+ mutual_complete = 1;
+ }
+ return;
+#ifdef FORWARD
+ case KRB_FORWARD_ACCEPT:
+ printf("[ Kerberos V5 accepted forwarded credentials ]\n");
+ return;
+ case KRB_FORWARD_REJECT:
+ printf("[ Kerberos V5 refuses forwarded credentials because %.*s ]\r\n",
+ cnt, data);
+ return;
+#endif /* FORWARD */
+ default:
+ if (auth_debug_mode)
+ printf("Unknown Kerberos option %d\r\n", data[-1]);
+ return;
+ }
+}
+
+ int
+kerberos5_status(ap, name, level)
+ Authenticator *ap;
+ char *name;
+ int level;
+{
+ if (level < AUTH_USER)
+ return(level);
+
+ if (UserNameRequested &&
+ krb5_kuserok(authdat->ticket->enc_part2->client, UserNameRequested))
+ {
+ strcpy(name, UserNameRequested);
+ return(AUTH_VALID);
+ } else
+ return(AUTH_USER);
+}
+
+#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);}
+#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);}
+
+ void
+kerberos5_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ char lbuf[32];
+ register int i;
+
+ buf[buflen-1] = '\0'; /* make sure its NULL terminated */
+ buflen -= 1;
+
+ switch(data[3]) {
+ case KRB_REJECT: /* Rejected (reason might follow) */
+ strncpy((char *)buf, " REJECT ", buflen);
+ goto common;
+
+ case KRB_ACCEPT: /* Accepted (name might follow) */
+ strncpy((char *)buf, " ACCEPT ", buflen);
+ common:
+ BUMP(buf, buflen);
+ if (cnt <= 4)
+ break;
+ ADDC(buf, buflen, '"');
+ for (i = 4; i < cnt; i++)
+ ADDC(buf, buflen, data[i]);
+ ADDC(buf, buflen, '"');
+ ADDC(buf, buflen, '\0');
+ break;
+
+
+ case KRB_AUTH: /* Authentication data follows */
+ strncpy((char *)buf, " AUTH", buflen);
+ goto common2;
+
+ case KRB_RESPONSE:
+ strncpy((char *)buf, " RESPONSE", buflen);
+ goto common2;
+
+#ifdef FORWARD
+ case KRB_FORWARD: /* Forwarded credentials follow */
+ strncpy((char *)buf, " FORWARD", buflen);
+ goto common2;
+
+ case KRB_FORWARD_ACCEPT: /* Forwarded credentials accepted */
+ strncpy((char *)buf, " FORWARD_ACCEPT", buflen);
+ goto common2;
+
+ case KRB_FORWARD_REJECT: /* Forwarded credentials rejected */
+ /* (reason might follow) */
+ strncpy((char *)buf, " FORWARD_REJECT", buflen);
+ goto common2;
+#endif /* FORWARD */
+
+ default:
+ sprintf(lbuf, " %d (unknown)", data[3]);
+ strncpy((char *)buf, lbuf, buflen);
+ common2:
+ BUMP(buf, buflen);
+ for (i = 4; i < cnt; i++) {
+ sprintf(lbuf, " %d", data[i]);
+ strncpy((char *)buf, lbuf, buflen);
+ BUMP(buf, buflen);
+ }
+ break;
+ }
+}
+
+#ifdef FORWARD
+ void
+kerberos5_forward(ap)
+ Authenticator *ap;
+{
+ struct hostent *hp;
+ krb5_creds *local_creds;
+ krb5_error_code r;
+ krb5_data forw_creds;
+ extern krb5_cksumtype krb5_kdc_req_sumtype;
+ krb5_ccache ccache;
+ int i;
+
+ if (!(local_creds = (krb5_creds *)
+ calloc(1, sizeof(*local_creds)))) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: could not allocate memory for credentials\r\n");
+ return;
+ }
+
+ if (r = krb5_sname_to_principal(RemoteHostName, "host", 1,
+ &local_creds->server)) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: could not build server name - %s\r\n",
+ error_message(r));
+ krb5_free_creds(local_creds);
+ return;
+ }
+
+ if (r = krb5_cc_default(&ccache)) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: could not get default ccache - %s\r\n",
+ error_message(r));
+ krb5_free_creds(local_creds);
+ return;
+ }
+
+ if (r = krb5_cc_get_principal(ccache, &local_creds->client)) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: could not get default principal - %s\r\n",
+ error_message(r));
+ krb5_free_creds(local_creds);
+ return;
+ }
+
+ /* Get ticket from credentials cache */
+ if (r = krb5_get_credentials(KRB5_GC_CACHED, ccache, local_creds)) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: could not obtain credentials - %s\r\n",
+ error_message(r));
+ krb5_free_creds(local_creds);
+ return;
+ }
+
+ if (r = get_for_creds(ETYPE_DES_CBC_CRC,
+ krb5_kdc_req_sumtype,
+ RemoteHostName,
+ local_creds->client,
+ &local_creds->keyblock,
+ forward_flags & OPTS_FORWARDABLE_CREDS,
+ &forw_creds)) {
+ if (auth_debug_mode)
+ printf("Kerberos V5: error getting forwarded creds - %s\r\n",
+ error_message(r));
+ krb5_free_creds(local_creds);
+ return;
+ }
+
+ /* Send forwarded credentials */
+ if (!Data(ap, KRB_FORWARD, forw_creds.data, forw_creds.length)) {
+ if (auth_debug_mode)
+ printf("Not enough room for authentication data\r\n");
+ }
+ else {
+ if (auth_debug_mode)
+ printf("Forwarded local Kerberos V5 credentials to server\r\n");
+ }
+
+ krb5_free_creds(local_creds);
+}
+#endif /* FORWARD */
+
+#endif /* KRB5 */
diff --git a/contrib/telnet/libtelnet/key-proto.h b/contrib/telnet/libtelnet/key-proto.h
new file mode 100644
index 0000000..9668a77
--- /dev/null
+++ b/contrib/telnet/libtelnet/key-proto.h
@@ -0,0 +1,71 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)key-proto.h 8.1 (Berkeley) 6/4/93
+ */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#ifndef __KEY_PROTO__
+#define __KEY_PROTO__
+
+#if !defined(P)
+#ifdef __STDC__
+#define P(x) x
+#else
+#define P(x) ()
+#endif
+#endif
+
+int key_file_exists P((void));
+void key_lookup P((unsigned char *, Block));
+void key_stream_init P((Block, Block, int));
+unsigned char key_stream P((int, int));
+#endif
diff --git a/contrib/telnet/libtelnet/krb4encpwd.c b/contrib/telnet/libtelnet/krb4encpwd.c
new file mode 100644
index 0000000..6148190
--- /dev/null
+++ b/contrib/telnet/libtelnet/krb4encpwd.c
@@ -0,0 +1,446 @@
+/*-
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)krb4encpwd.c 8.3 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+
+#ifdef KRB4_ENCPWD
+/*
+ * COPYRIGHT (C) 1990 DIGITAL EQUIPMENT CORPORATION
+ * ALL RIGHTS RESERVED
+ *
+ * "Digital Equipment Corporation authorizes the reproduction,
+ * distribution and modification of this software subject to the following
+ * restrictions:
+ *
+ * 1. Any partial or whole copy of this software, or any modification
+ * thereof, must include this copyright notice in its entirety.
+ *
+ * 2. This software is supplied "as is" with no warranty of any kind,
+ * expressed or implied, for any purpose, including any warranty of fitness
+ * or merchantibility. DIGITAL assumes no responsibility for the use or
+ * reliability of this software, nor promises to provide any form of
+ * support for it on any basis.
+ *
+ * 3. Distribution of this software is authorized only if no profit or
+ * remuneration of any kind is received in exchange for such distribution.
+ *
+ * 4. This software produces public key authentication certificates
+ * bearing an expiration date established by DIGITAL and RSA Data
+ * Security, Inc. It may cease to generate certificates after the expiration
+ * date. Any modification of this software that changes or defeats
+ * the expiration date or its effect is unauthorized.
+ *
+ * 5. Software that will renew or extend the expiration date of
+ * authentication certificates produced by this software may be obtained
+ * from RSA Data Security, Inc., 10 Twin Dolphin Drive, Redwood City, CA
+ * 94065, (415)595-8782, or from DIGITAL"
+ *
+ */
+
+#include <sys/types.h>
+#include <arpa/telnet.h>
+#include <pwd.h>
+#include <stdio.h>
+
+#include <des.h>
+#include <krb.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+#include "encrypt.h"
+#include "auth.h"
+#include "misc.h"
+
+int krb_mk_encpwd_req P((KTEXT, char *, char *, char *, char *, char *, char *));
+int krb_rd_encpwd_req P((KTEXT, char *, char *, u_long, AUTH_DAT *, char *, char *, char *, char *));
+
+extern auth_debug_mode;
+
+static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0,
+ AUTHTYPE_KRB4_ENCPWD, };
+static unsigned char str_name[1024] = { IAC, SB, TELOPT_AUTHENTICATION,
+ TELQUAL_NAME, };
+
+#define KRB4_ENCPWD_AUTH 0 /* Authentication data follows */
+#define KRB4_ENCPWD_REJECT 1 /* Rejected (reason might follow) */
+#define KRB4_ENCPWD_ACCEPT 2 /* Accepted */
+#define KRB4_ENCPWD_CHALLENGE 3 /* Challenge for mutual auth. */
+#define KRB4_ENCPWD_ACK 4 /* Acknowledge */
+
+#define KRB_SERVICE_NAME "rcmd"
+
+static KTEXT_ST auth;
+static char name[ANAME_SZ];
+static char user_passwd[ANAME_SZ];
+static AUTH_DAT adat = { 0 };
+#ifdef ENCRYPTION
+static Block session_key = { 0 };
+#endif /* ENCRYPTION */
+static Schedule sched;
+static char challenge[REALM_SZ];
+
+ static int
+Data(ap, type, d, c)
+ Authenticator *ap;
+ int type;
+ void *d;
+ int c;
+{
+ unsigned char *p = str_data + 4;
+ unsigned char *cd = (unsigned char *)d;
+
+ if (c == -1)
+ c = strlen((char *)cd);
+
+ if (0) {
+ printf("%s:%d: [%d] (%d)",
+ str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY",
+ str_data[3],
+ type, c);
+ printd(d, c);
+ printf("\r\n");
+ }
+ *p++ = ap->type;
+ *p++ = ap->way;
+ *p++ = type;
+ while (c-- > 0) {
+ if ((*p++ = *cd++) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ if (str_data[3] == TELQUAL_IS)
+ printsub('>', &str_data[2], p - (&str_data[2]));
+ return(net_write(str_data, p - str_data));
+}
+
+ int
+krb4encpwd_init(ap, server)
+ Authenticator *ap;
+ int server;
+{
+ char hostname[80], *cp, *realm;
+ C_Block skey;
+
+ if (server) {
+ str_data[3] = TELQUAL_REPLY;
+ } else {
+ str_data[3] = TELQUAL_IS;
+ gethostname(hostname, sizeof(hostname));
+ realm = krb_realmofhost(hostname);
+ cp = strchr(hostname, '.');
+ if (*cp != NULL) *cp = NULL;
+ if (read_service_key(KRB_SERVICE_NAME, hostname, realm, 0,
+ KEYFILE, (char *)skey)) {
+ return(0);
+ }
+ }
+ return(1);
+}
+
+ int
+krb4encpwd_send(ap)
+ Authenticator *ap;
+{
+
+ printf("[ Trying KRB4ENCPWD ... ]\n");
+ if (!UserNameRequested) {
+ return(0);
+ }
+ if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) {
+ return(0);
+ }
+
+ if (!Data(ap, KRB4_ENCPWD_ACK, (void *)NULL, 0)) {
+ return(0);
+ }
+
+ return(1);
+}
+
+ void
+krb4encpwd_is(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+ Block datablock;
+ char r_passwd[ANAME_SZ], r_user[ANAME_SZ];
+ char lhostname[ANAME_SZ], *cp;
+ int r;
+ time_t now;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case KRB4_ENCPWD_AUTH:
+ memmove((void *)auth.dat, (void *)data, auth.length = cnt);
+
+ gethostname(lhostname, sizeof(lhostname));
+ if ((cp = strchr(lhostname, '.')) != 0) *cp = '\0';
+
+ if (r = krb_rd_encpwd_req(&auth, KRB_SERVICE_NAME, lhostname, 0, &adat, NULL, challenge, r_user, r_passwd)) {
+ Data(ap, KRB4_ENCPWD_REJECT, (void *)"Auth failed", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+ auth_encrypt_userpwd(r_passwd);
+ if (passwdok(UserNameRequested, UserPassword) == 0) {
+ /*
+ * illegal username and password
+ */
+ Data(ap, KRB4_ENCPWD_REJECT, (void *)"Illegal password", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+
+ memmove((void *)session_key, (void *)adat.session, sizeof(Block));
+ Data(ap, KRB4_ENCPWD_ACCEPT, (void *)0, 0);
+ auth_finished(ap, AUTH_USER);
+ break;
+
+ case KRB4_ENCPWD_CHALLENGE:
+ /*
+ * Take the received random challenge text and save
+ * for future authentication.
+ */
+ memmove((void *)challenge, (void *)data, sizeof(Block));
+ break;
+
+
+ case KRB4_ENCPWD_ACK:
+ /*
+ * Receive ack, if mutual then send random challenge
+ */
+
+ /*
+ * If we are doing mutual authentication, get set up to send
+ * the challenge, and verify it when the response comes back.
+ */
+
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
+ register int i;
+
+ time(&now);
+ sprintf(challenge, "%x", now);
+ Data(ap, KRB4_ENCPWD_CHALLENGE, (void *)challenge, strlen(challenge));
+ }
+ break;
+
+ default:
+ Data(ap, KRB4_ENCPWD_REJECT, 0, 0);
+ break;
+ }
+}
+
+
+ void
+krb4encpwd_reply(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+ KTEXT_ST krb_token;
+ Block enckey;
+ CREDENTIALS cred;
+ int r;
+ char randchal[REALM_SZ], instance[ANAME_SZ], *cp;
+ char hostname[80], *realm;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case KRB4_ENCPWD_REJECT:
+ if (cnt > 0) {
+ printf("[ KRB4_ENCPWD refuses authentication because %.*s ]\r\n",
+ cnt, data);
+ } else
+ printf("[ KRB4_ENCPWD refuses authentication ]\r\n");
+ auth_send_retry();
+ return;
+ case KRB4_ENCPWD_ACCEPT:
+ printf("[ KRB4_ENCPWD accepts you ]\n");
+ auth_finished(ap, AUTH_USER);
+ return;
+ case KRB4_ENCPWD_CHALLENGE:
+ /*
+ * Verify that the response to the challenge is correct.
+ */
+
+ gethostname(hostname, sizeof(hostname));
+ realm = krb_realmofhost(hostname);
+ memmove((void *)challenge, (void *)data, cnt);
+ memset(user_passwd, 0, sizeof(user_passwd));
+ local_des_read_pw_string(user_passwd, sizeof(user_passwd)-1, "Password: ", 0);
+ UserPassword = user_passwd;
+ Challenge = challenge;
+ strcpy(instance, RemoteHostName);
+ if ((cp = strchr(instance, '.')) != 0) *cp = '\0';
+
+ if (r = krb_mk_encpwd_req(&krb_token, KRB_SERVICE_NAME, instance, realm, Challenge, UserNameRequested, user_passwd)) {
+ krb_token.length = 0;
+ }
+
+ if (!Data(ap, KRB4_ENCPWD_AUTH, (void *)krb_token.dat, krb_token.length)) {
+ return;
+ }
+
+ break;
+
+ default:
+ return;
+ }
+}
+
+ int
+krb4encpwd_status(ap, name, level)
+ Authenticator *ap;
+ char *name;
+ int level;
+{
+
+ if (level < AUTH_USER)
+ return(level);
+
+ if (UserNameRequested && passwdok(UserNameRequested, UserPassword)) {
+ strcpy(name, UserNameRequested);
+ return(AUTH_VALID);
+ } else {
+ return(AUTH_USER);
+ }
+}
+
+#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);}
+#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);}
+
+ void
+krb4encpwd_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ char lbuf[32];
+ register int i;
+
+ buf[buflen-1] = '\0'; /* make sure its NULL terminated */
+ buflen -= 1;
+
+ switch(data[3]) {
+ case KRB4_ENCPWD_REJECT: /* Rejected (reason might follow) */
+ strncpy((char *)buf, " REJECT ", buflen);
+ goto common;
+
+ case KRB4_ENCPWD_ACCEPT: /* Accepted (name might follow) */
+ strncpy((char *)buf, " ACCEPT ", buflen);
+ common:
+ BUMP(buf, buflen);
+ if (cnt <= 4)
+ break;
+ ADDC(buf, buflen, '"');
+ for (i = 4; i < cnt; i++)
+ ADDC(buf, buflen, data[i]);
+ ADDC(buf, buflen, '"');
+ ADDC(buf, buflen, '\0');
+ break;
+
+ case KRB4_ENCPWD_AUTH: /* Authentication data follows */
+ strncpy((char *)buf, " AUTH", buflen);
+ goto common2;
+
+ case KRB4_ENCPWD_CHALLENGE:
+ strncpy((char *)buf, " CHALLENGE", buflen);
+ goto common2;
+
+ case KRB4_ENCPWD_ACK:
+ strncpy((char *)buf, " ACK", buflen);
+ goto common2;
+
+ default:
+ sprintf(lbuf, " %d (unknown)", data[3]);
+ strncpy((char *)buf, lbuf, buflen);
+ common2:
+ BUMP(buf, buflen);
+ for (i = 4; i < cnt; i++) {
+ sprintf(lbuf, " %d", data[i]);
+ strncpy((char *)buf, lbuf, buflen);
+ BUMP(buf, buflen);
+ }
+ break;
+ }
+}
+
+int passwdok(name, passwd)
+char *name, *passwd;
+{
+ char *crypt();
+ char *salt, *p;
+ struct passwd *pwd;
+ int passwdok_status = 0;
+
+ if (pwd = getpwnam(name))
+ salt = pwd->pw_passwd;
+ else salt = "xx";
+
+ p = crypt(passwd, salt);
+
+ if (pwd && !strcmp(p, pwd->pw_passwd)) {
+ passwdok_status = 1;
+ } else passwdok_status = 0;
+ return(passwdok_status);
+}
+
+#endif
+
+#ifdef notdef
+
+prkey(msg, key)
+ char *msg;
+ unsigned char *key;
+{
+ register int i;
+ printf("%s:", msg);
+ for (i = 0; i < 8; i++)
+ printf(" %3d", key[i]);
+ printf("\r\n");
+}
+#endif
diff --git a/contrib/telnet/libtelnet/misc-proto.h b/contrib/telnet/libtelnet/misc-proto.h
new file mode 100644
index 0000000..e5f334a
--- /dev/null
+++ b/contrib/telnet/libtelnet/misc-proto.h
@@ -0,0 +1,79 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)misc-proto.h 8.1 (Berkeley) 6/4/93
+ */
+
+/*
+ * Copyright (C) 1990 by the Massachusetts Institute of Technology
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#ifndef __MISC_PROTO__
+#define __MISC_PROTO__
+
+#if !defined(P)
+#ifdef __STDC__
+#define P(x) x
+#else
+#define P(x) ()
+#endif
+#endif
+
+void auth_encrypt_init P((char *, char *, char *, int));
+void auth_encrypt_connect P((int));
+void printd P((unsigned char *, int));
+
+/*
+ * These functions are imported from the application
+ */
+int net_write P((unsigned char *, int));
+void net_encrypt P((void));
+int telnet_spin P((void));
+char *telnet_getenv P((char *));
+char *telnet_gets P((char *, char *, int, int));
+#endif
diff --git a/contrib/telnet/libtelnet/misc.c b/contrib/telnet/libtelnet/misc.c
new file mode 100644
index 0000000..9565900
--- /dev/null
+++ b/contrib/telnet/libtelnet/misc.c
@@ -0,0 +1,94 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include "misc.h"
+
+char *RemoteHostName;
+char *LocalHostName;
+char *UserNameRequested = 0;
+int ConnectedCount = 0;
+
+ void
+auth_encrypt_init(local, remote, name, server)
+ char *local;
+ char *remote;
+ char *name;
+ int server;
+{
+ RemoteHostName = remote;
+ LocalHostName = local;
+#if defined(AUTHENTICATION)
+ auth_init(name, server);
+#endif
+#ifdef ENCRYPTION
+ encrypt_init(name, server);
+#endif /* ENCRYPTION */
+ if (UserNameRequested) {
+ free(UserNameRequested);
+ UserNameRequested = 0;
+ }
+}
+
+ void
+auth_encrypt_user(name)
+ char *name;
+{
+ extern char *strdup();
+
+ if (UserNameRequested)
+ free(UserNameRequested);
+ UserNameRequested = name ? strdup(name) : 0;
+}
+
+ void
+auth_encrypt_connect(cnt)
+ int cnt;
+{
+}
+
+ void
+printd(data, cnt)
+ unsigned char *data;
+ int cnt;
+{
+ if (cnt > 16)
+ cnt = 16;
+ while (cnt-- > 0) {
+ printf(" %02x", *data);
+ ++data;
+ }
+}
diff --git a/contrib/telnet/libtelnet/misc.h b/contrib/telnet/libtelnet/misc.h
new file mode 100644
index 0000000..41ffa7f
--- /dev/null
+++ b/contrib/telnet/libtelnet/misc.h
@@ -0,0 +1,42 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)misc.h 8.1 (Berkeley) 6/4/93
+ */
+
+extern char *UserNameRequested;
+extern char *LocalHostName;
+extern char *RemoteHostName;
+extern int ConnectedCount;
+extern int ReservedPort;
+
+#include "misc-proto.h"
diff --git a/contrib/telnet/libtelnet/read_password.c b/contrib/telnet/libtelnet/read_password.c
new file mode 100644
index 0000000..4676ed3
--- /dev/null
+++ b/contrib/telnet/libtelnet/read_password.c
@@ -0,0 +1,145 @@
+/*-
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)read_password.c 8.3 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+/*
+ * $Source: /mit/kerberos/src/lib/des/RCS/read_password.c,v $
+ * $Author: jon $
+ *
+ * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute
+ * of Technology.
+ *
+ * For copying and distribution information, please see the file
+ * <mit-copyright.h>.
+ *
+ * This routine prints the supplied string to standard
+ * output as a prompt, and reads a password string without
+ * echoing.
+ */
+
+#if defined(RSA_ENCPWD) || defined(KRB4_ENCPWD)
+
+#include <stdio.h>
+#include <strings.h>
+#include <sys/ioctl.h>
+#include <signal.h>
+#include <setjmp.h>
+
+static jmp_buf env;
+
+/*** Routines ****************************************************** */
+/*
+ * This version just returns the string, doesn't map to key.
+ *
+ * Returns 0 on success, non-zero on failure.
+ */
+
+int
+local_des_read_pw_string(s,max,prompt,verify)
+ char *s;
+ int max;
+ char *prompt;
+ int verify;
+{
+ int ok = 0;
+ char *ptr;
+
+ jmp_buf old_env;
+ struct sgttyb tty_state;
+ char key_string[BUFSIZ];
+
+ if (max > BUFSIZ) {
+ return -1;
+ }
+
+ /* XXX assume jmp_buf is typedef'ed to an array */
+ memmove((char *)env, (char *)old_env, sizeof(env));
+ if (setjmp(env))
+ goto lose;
+
+ /* save terminal state*/
+ if (ioctl(0,TIOCGETP,(char *)&tty_state) == -1)
+ return -1;
+/*
+ push_signals();
+*/
+ /* Turn off echo */
+ tty_state.sg_flags &= ~ECHO;
+ if (ioctl(0,TIOCSETP,(char *)&tty_state) == -1)
+ return -1;
+ while (!ok) {
+ (void) printf(prompt);
+ (void) fflush(stdout);
+ while (!fgets(s, max, stdin));
+
+ if ((ptr = strchr(s, '\n')))
+ *ptr = '\0';
+ if (verify) {
+ printf("\nVerifying, please re-enter %s",prompt);
+ (void) fflush(stdout);
+ if (!fgets(key_string, sizeof(key_string), stdin)) {
+ clearerr(stdin);
+ continue;
+ }
+ if ((ptr = strchr(key_string, '\n')))
+ *ptr = '\0';
+ if (strcmp(s,key_string)) {
+ printf("\n\07\07Mismatch - try again\n");
+ (void) fflush(stdout);
+ continue;
+ }
+ }
+ ok = 1;
+ }
+
+lose:
+ if (!ok)
+ memset(s, 0, max);
+ printf("\n");
+ /* turn echo back on */
+ tty_state.sg_flags |= ECHO;
+ if (ioctl(0,TIOCSETP,(char *)&tty_state))
+ ok = 0;
+/*
+ pop_signals();
+*/
+ memmove((char *)old_env, (char *)env, sizeof(env));
+ if (verify)
+ memset(key_string, 0, sizeof (key_string));
+ s[max-1] = 0; /* force termination */
+ return !ok; /* return nonzero if not okay */
+}
+#endif /* defined(RSA_ENCPWD) || defined(KRB4_ENCPWD) */
diff --git a/contrib/telnet/libtelnet/rsaencpwd.c b/contrib/telnet/libtelnet/rsaencpwd.c
new file mode 100644
index 0000000..5906d99
--- /dev/null
+++ b/contrib/telnet/libtelnet/rsaencpwd.c
@@ -0,0 +1,492 @@
+/*-
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)rsaencpwd.c 8.3 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+
+#ifdef RSA_ENCPWD
+/*
+ * COPYRIGHT (C) 1990 DIGITAL EQUIPMENT CORPORATION
+ * ALL RIGHTS RESERVED
+ *
+ * "Digital Equipment Corporation authorizes the reproduction,
+ * distribution and modification of this software subject to the following
+ * restrictions:
+ *
+ * 1. Any partial or whole copy of this software, or any modification
+ * thereof, must include this copyright notice in its entirety.
+ *
+ * 2. This software is supplied "as is" with no warranty of any kind,
+ * expressed or implied, for any purpose, including any warranty of fitness
+ * or merchantibility. DIGITAL assumes no responsibility for the use or
+ * reliability of this software, nor promises to provide any form of
+ * support for it on any basis.
+ *
+ * 3. Distribution of this software is authorized only if no profit or
+ * remuneration of any kind is received in exchange for such distribution.
+ *
+ * 4. This software produces public key authentication certificates
+ * bearing an expiration date established by DIGITAL and RSA Data
+ * Security, Inc. It may cease to generate certificates after the expiration
+ * date. Any modification of this software that changes or defeats
+ * the expiration date or its effect is unauthorized.
+ *
+ * 5. Software that will renew or extend the expiration date of
+ * authentication certificates produced by this software may be obtained
+ * from RSA Data Security, Inc., 10 Twin Dolphin Drive, Redwood City, CA
+ * 94065, (415)595-8782, or from DIGITAL"
+ *
+ */
+
+#include <sys/types.h>
+#include <arpa/telnet.h>
+#include <pwd.h>
+#include <stdio.h>
+
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+#include "encrypt.h"
+#include "auth.h"
+#include "misc.h"
+#include "cdc.h"
+
+extern auth_debug_mode;
+
+static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0,
+ AUTHTYPE_RSA_ENCPWD, };
+static unsigned char str_name[1024] = { IAC, SB, TELOPT_AUTHENTICATION,
+ TELQUAL_NAME, };
+
+#define RSA_ENCPWD_AUTH 0 /* Authentication data follows */
+#define RSA_ENCPWD_REJECT 1 /* Rejected (reason might follow) */
+#define RSA_ENCPWD_ACCEPT 2 /* Accepted */
+#define RSA_ENCPWD_CHALLENGEKEY 3 /* Challenge and public key */
+
+#define NAME_SZ 40
+#define CHAL_SZ 20
+#define PWD_SZ 40
+
+static KTEXT_ST auth;
+static char name[NAME_SZ];
+static char user_passwd[PWD_SZ];
+static char key_file[2*NAME_SZ];
+static char lhostname[NAME_SZ];
+static char challenge[CHAL_SZ];
+static int challenge_len;
+
+ static int
+Data(ap, type, d, c)
+ Authenticator *ap;
+ int type;
+ void *d;
+ int c;
+{
+ unsigned char *p = str_data + 4;
+ unsigned char *cd = (unsigned char *)d;
+
+ if (c == -1)
+ c = strlen((char *)cd);
+
+ if (0) {
+ printf("%s:%d: [%d] (%d)",
+ str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY",
+ str_data[3],
+ type, c);
+ printd(d, c);
+ printf("\r\n");
+ }
+ *p++ = ap->type;
+ *p++ = ap->way;
+ if (type != NULL) *p++ = type;
+ while (c-- > 0) {
+ if ((*p++ = *cd++) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ if (str_data[3] == TELQUAL_IS)
+ printsub('>', &str_data[2], p - (&str_data[2]));
+ return(net_write(str_data, p - str_data));
+}
+
+ int
+rsaencpwd_init(ap, server)
+ Authenticator *ap;
+ int server;
+{
+ char *cp;
+ FILE *fp;
+
+ if (server) {
+ str_data[3] = TELQUAL_REPLY;
+ memset(key_file, 0, sizeof(key_file));
+ gethostname(lhostname, sizeof(lhostname));
+ if ((cp = strchr(lhostname, '.')) != 0) *cp = '\0';
+ strcpy(key_file, "/etc/.");
+ strcat(key_file, lhostname);
+ strcat(key_file, "_privkey");
+ if ((fp=fopen(key_file, "r"))==NULL) return(0);
+ fclose(fp);
+ } else {
+ str_data[3] = TELQUAL_IS;
+ }
+ return(1);
+}
+
+ int
+rsaencpwd_send(ap)
+ Authenticator *ap;
+{
+
+ printf("[ Trying RSAENCPWD ... ]\n");
+ if (!UserNameRequested) {
+ return(0);
+ }
+ if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) {
+ return(0);
+ }
+ if (!Data(ap, NULL, (void *)NULL, 0)) {
+ return(0);
+ }
+
+
+ return(1);
+}
+
+ void
+rsaencpwd_is(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+ Block datablock;
+ char r_passwd[PWD_SZ], r_user[NAME_SZ];
+ char *cp, key[160];
+ char chalkey[160], *ptr;
+ FILE *fp;
+ int r, i, j, chalkey_len, len;
+ time_t now;
+
+ cnt--;
+ switch (*data++) {
+ case RSA_ENCPWD_AUTH:
+ memmove((void *)auth.dat, (void *)data, auth.length = cnt);
+
+ if ((fp=fopen(key_file, "r"))==NULL) {
+ Data(ap, RSA_ENCPWD_REJECT, (void *)"Auth failed", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+ /*
+ * get privkey
+ */
+ fscanf(fp, "%x;", &len);
+ for (i=0;i<len;i++) {
+ j = getc(fp); key[i]=j;
+ }
+ fclose(fp);
+
+ r = accept_rsa_encpwd(&auth, key, challenge,
+ challenge_len, r_passwd);
+ if (r < 0) {
+ Data(ap, RSA_ENCPWD_REJECT, (void *)"Auth failed", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+ auth_encrypt_userpwd(r_passwd);
+ if (rsaencpwd_passwdok(UserNameRequested, UserPassword) == 0) {
+ /*
+ * illegal username and password
+ */
+ Data(ap, RSA_ENCPWD_REJECT, (void *)"Illegal password", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+
+ Data(ap, RSA_ENCPWD_ACCEPT, (void *)0, 0);
+ auth_finished(ap, AUTH_USER);
+ break;
+
+
+ case IAC:
+
+ /*
+ * If we are doing mutual authentication, get set up to send
+ * the challenge, and verify it when the response comes back.
+ */
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_ONE_WAY) {
+ register int i;
+
+
+ time(&now);
+ if ((now % 2) == 0) {
+ sprintf(challenge, "%x", now);
+ challenge_len = strlen(challenge);
+ } else {
+ strcpy(challenge, "randchal");
+ challenge_len = 8;
+ }
+
+ if ((fp=fopen(key_file, "r"))==NULL) {
+ Data(ap, RSA_ENCPWD_REJECT, (void *)"Auth failed", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+ /*
+ * skip privkey
+ */
+ fscanf(fp, "%x;", &len);
+ for (i=0;i<len;i++) {
+ j = getc(fp);
+ }
+ /*
+ * get pubkey
+ */
+ fscanf(fp, "%x;", &len);
+ for (i=0;i<len;i++) {
+ j = getc(fp); key[i]=j;
+ }
+ fclose(fp);
+ chalkey[0] = 0x30;
+ ptr = (char *) &chalkey[1];
+ chalkey_len = 1+NumEncodeLengthOctets(i)+i+1+NumEncodeLengthOctets(challenge_len)+challenge_len;
+ EncodeLength(ptr, chalkey_len);
+ ptr +=NumEncodeLengthOctets(chalkey_len);
+ *ptr++ = 0x04; /* OCTET STRING */
+ *ptr++ = challenge_len;
+ memmove(ptr, challenge, challenge_len);
+ ptr += challenge_len;
+ *ptr++ = 0x04; /* OCTET STRING */
+ EncodeLength(ptr, i);
+ ptr += NumEncodeLengthOctets(i);
+ memmove(ptr, key, i);
+ chalkey_len = 1+NumEncodeLengthOctets(chalkey_len)+chalkey_len;
+ Data(ap, RSA_ENCPWD_CHALLENGEKEY, (void *)chalkey, chalkey_len);
+ }
+ break;
+
+ default:
+ Data(ap, RSA_ENCPWD_REJECT, 0, 0);
+ break;
+ }
+}
+
+
+ void
+rsaencpwd_reply(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+ KTEXT_ST token;
+ Block enckey;
+ int r, pubkey_len;
+ char randchal[CHAL_SZ], *cp;
+ char chalkey[160], pubkey[128], *ptr;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case RSA_ENCPWD_REJECT:
+ if (cnt > 0) {
+ printf("[ RSA_ENCPWD refuses authentication because %.*s ]\r\n",
+ cnt, data);
+ } else
+ printf("[ RSA_ENCPWD refuses authentication ]\r\n");
+ auth_send_retry();
+ return;
+ case RSA_ENCPWD_ACCEPT:
+ printf("[ RSA_ENCPWD accepts you ]\n");
+ auth_finished(ap, AUTH_USER);
+ return;
+ case RSA_ENCPWD_CHALLENGEKEY:
+ /*
+ * Verify that the response to the challenge is correct.
+ */
+
+ memmove((void *)chalkey, (void *)data, cnt);
+ ptr = (char *) &chalkey[0];
+ ptr += DecodeHeaderLength(chalkey);
+ if (*ptr != 0x04) {
+ return;
+ }
+ *ptr++;
+ challenge_len = DecodeValueLength(ptr);
+ ptr += NumEncodeLengthOctets(challenge_len);
+ memmove(challenge, ptr, challenge_len);
+ ptr += challenge_len;
+ if (*ptr != 0x04) {
+ return;
+ }
+ *ptr++;
+ pubkey_len = DecodeValueLength(ptr);
+ ptr += NumEncodeLengthOctets(pubkey_len);
+ memmove(pubkey, ptr, pubkey_len);
+ memset(user_passwd, 0, sizeof(user_passwd));
+ local_des_read_pw_string(user_passwd, sizeof(user_passwd)-1, "Password: ", 0);
+ UserPassword = user_passwd;
+ Challenge = challenge;
+ r = init_rsa_encpwd(&token, user_passwd, challenge, challenge_len, pubkey);
+ if (r < 0) {
+ token.length = 1;
+ }
+
+ if (!Data(ap, RSA_ENCPWD_AUTH, (void *)token.dat, token.length)) {
+ return;
+ }
+
+ break;
+
+ default:
+ return;
+ }
+}
+
+ int
+rsaencpwd_status(ap, name, level)
+ Authenticator *ap;
+ char *name;
+ int level;
+{
+
+ if (level < AUTH_USER)
+ return(level);
+
+ if (UserNameRequested && rsaencpwd_passwdok(UserNameRequested, UserPassword)) {
+ strcpy(name, UserNameRequested);
+ return(AUTH_VALID);
+ } else {
+ return(AUTH_USER);
+ }
+}
+
+#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);}
+#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);}
+
+ void
+rsaencpwd_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ char lbuf[32];
+ register int i;
+
+ buf[buflen-1] = '\0'; /* make sure its NULL terminated */
+ buflen -= 1;
+
+ switch(data[3]) {
+ case RSA_ENCPWD_REJECT: /* Rejected (reason might follow) */
+ strncpy((char *)buf, " REJECT ", buflen);
+ goto common;
+
+ case RSA_ENCPWD_ACCEPT: /* Accepted (name might follow) */
+ strncpy((char *)buf, " ACCEPT ", buflen);
+ common:
+ BUMP(buf, buflen);
+ if (cnt <= 4)
+ break;
+ ADDC(buf, buflen, '"');
+ for (i = 4; i < cnt; i++)
+ ADDC(buf, buflen, data[i]);
+ ADDC(buf, buflen, '"');
+ ADDC(buf, buflen, '\0');
+ break;
+
+ case RSA_ENCPWD_AUTH: /* Authentication data follows */
+ strncpy((char *)buf, " AUTH", buflen);
+ goto common2;
+
+ case RSA_ENCPWD_CHALLENGEKEY:
+ strncpy((char *)buf, " CHALLENGEKEY", buflen);
+ goto common2;
+
+ default:
+ sprintf(lbuf, " %d (unknown)", data[3]);
+ strncpy((char *)buf, lbuf, buflen);
+ common2:
+ BUMP(buf, buflen);
+ for (i = 4; i < cnt; i++) {
+ sprintf(lbuf, " %d", data[i]);
+ strncpy((char *)buf, lbuf, buflen);
+ BUMP(buf, buflen);
+ }
+ break;
+ }
+}
+
+int rsaencpwd_passwdok(name, passwd)
+char *name, *passwd;
+{
+ char *crypt();
+ char *salt, *p;
+ struct passwd *pwd;
+ int passwdok_status = 0;
+
+ if (pwd = getpwnam(name))
+ salt = pwd->pw_passwd;
+ else salt = "xx";
+
+ p = crypt(passwd, salt);
+
+ if (pwd && !strcmp(p, pwd->pw_passwd)) {
+ passwdok_status = 1;
+ } else passwdok_status = 0;
+ return(passwdok_status);
+}
+
+#endif
+
+#ifdef notdef
+
+prkey(msg, key)
+ char *msg;
+ unsigned char *key;
+{
+ register int i;
+ printf("%s:", msg);
+ for (i = 0; i < 8; i++)
+ printf(" %3d", key[i]);
+ printf("\r\n");
+}
+#endif
diff --git a/contrib/telnet/libtelnet/spx.c b/contrib/telnet/libtelnet/spx.c
new file mode 100644
index 0000000..86c6197
--- /dev/null
+++ b/contrib/telnet/libtelnet/spx.c
@@ -0,0 +1,588 @@
+/*-
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)spx.c 8.2 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#ifdef SPX
+/*
+ * COPYRIGHT (C) 1990 DIGITAL EQUIPMENT CORPORATION
+ * ALL RIGHTS RESERVED
+ *
+ * "Digital Equipment Corporation authorizes the reproduction,
+ * distribution and modification of this software subject to the following
+ * restrictions:
+ *
+ * 1. Any partial or whole copy of this software, or any modification
+ * thereof, must include this copyright notice in its entirety.
+ *
+ * 2. This software is supplied "as is" with no warranty of any kind,
+ * expressed or implied, for any purpose, including any warranty of fitness
+ * or merchantibility. DIGITAL assumes no responsibility for the use or
+ * reliability of this software, nor promises to provide any form of
+ * support for it on any basis.
+ *
+ * 3. Distribution of this software is authorized only if no profit or
+ * remuneration of any kind is received in exchange for such distribution.
+ *
+ * 4. This software produces public key authentication certificates
+ * bearing an expiration date established by DIGITAL and RSA Data
+ * Security, Inc. It may cease to generate certificates after the expiration
+ * date. Any modification of this software that changes or defeats
+ * the expiration date or its effect is unauthorized.
+ *
+ * 5. Software that will renew or extend the expiration date of
+ * authentication certificates produced by this software may be obtained
+ * from RSA Data Security, Inc., 10 Twin Dolphin Drive, Redwood City, CA
+ * 94065, (415)595-8782, or from DIGITAL"
+ *
+ */
+
+#include <sys/types.h>
+#include <arpa/telnet.h>
+#include <stdio.h>
+#include "gssapi_defs.h"
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#ifdef NO_STRING_H
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+#include <pwd.h>
+#include "encrypt.h"
+#include "auth.h"
+#include "misc.h"
+
+extern auth_debug_mode;
+
+static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0,
+ AUTHTYPE_SPX, };
+static unsigned char str_name[1024] = { IAC, SB, TELOPT_AUTHENTICATION,
+ TELQUAL_NAME, };
+
+#define SPX_AUTH 0 /* Authentication data follows */
+#define SPX_REJECT 1 /* Rejected (reason might follow) */
+#define SPX_ACCEPT 2 /* Accepted */
+
+#ifdef ENCRYPTION
+static Block session_key = { 0 };
+#endif /* ENCRYPTION */
+static Schedule sched;
+static Block challenge = { 0 };
+
+
+/*******************************************************************/
+
+gss_OID_set actual_mechs;
+gss_OID actual_mech_type, output_name_type;
+int major_status, status, msg_ctx = 0, new_status;
+int req_flags = 0, ret_flags, lifetime_rec;
+gss_cred_id_t gss_cred_handle;
+gss_ctx_id_t actual_ctxhandle, context_handle;
+gss_buffer_desc output_token, input_token, input_name_buffer;
+gss_buffer_desc status_string;
+gss_name_t desired_targname, src_name;
+gss_channel_bindings input_chan_bindings;
+char lhostname[GSS_C_MAX_PRINTABLE_NAME];
+char targ_printable[GSS_C_MAX_PRINTABLE_NAME];
+int to_addr=0, from_addr=0;
+char *address;
+gss_buffer_desc fullname_buffer;
+gss_OID fullname_type;
+gss_cred_id_t gss_delegated_cred_handle;
+
+/*******************************************************************/
+
+
+
+ static int
+Data(ap, type, d, c)
+ Authenticator *ap;
+ int type;
+ void *d;
+ int c;
+{
+ unsigned char *p = str_data + 4;
+ unsigned char *cd = (unsigned char *)d;
+
+ if (c == -1)
+ c = strlen((char *)cd);
+
+ if (0) {
+ printf("%s:%d: [%d] (%d)",
+ str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY",
+ str_data[3],
+ type, c);
+ printd(d, c);
+ printf("\r\n");
+ }
+ *p++ = ap->type;
+ *p++ = ap->way;
+ *p++ = type;
+ while (c-- > 0) {
+ if ((*p++ = *cd++) == IAC)
+ *p++ = IAC;
+ }
+ *p++ = IAC;
+ *p++ = SE;
+ if (str_data[3] == TELQUAL_IS)
+ printsub('>', &str_data[2], p - (&str_data[2]));
+ return(net_write(str_data, p - str_data));
+}
+
+ int
+spx_init(ap, server)
+ Authenticator *ap;
+ int server;
+{
+ gss_cred_id_t tmp_cred_handle;
+
+ if (server) {
+ str_data[3] = TELQUAL_REPLY;
+ gethostname(lhostname, sizeof(lhostname));
+ strcpy(targ_printable, "SERVICE:rcmd@");
+ strcat(targ_printable, lhostname);
+ input_name_buffer.length = strlen(targ_printable);
+ input_name_buffer.value = targ_printable;
+ major_status = gss_import_name(&status,
+ &input_name_buffer,
+ GSS_C_NULL_OID,
+ &desired_targname);
+ major_status = gss_acquire_cred(&status,
+ desired_targname,
+ 0,
+ GSS_C_NULL_OID_SET,
+ GSS_C_ACCEPT,
+ &tmp_cred_handle,
+ &actual_mechs,
+ &lifetime_rec);
+ if (major_status != GSS_S_COMPLETE) return(0);
+ } else {
+ str_data[3] = TELQUAL_IS;
+ }
+ return(1);
+}
+
+ int
+spx_send(ap)
+ Authenticator *ap;
+{
+ Block enckey;
+ int r;
+
+ gss_OID actual_mech_type, output_name_type;
+ int msg_ctx = 0, new_status, status;
+ int req_flags = 0, ret_flags, lifetime_rec, major_status;
+ gss_buffer_desc output_token, input_token, input_name_buffer;
+ gss_buffer_desc output_name_buffer, status_string;
+ gss_name_t desired_targname;
+ gss_channel_bindings input_chan_bindings;
+ char targ_printable[GSS_C_MAX_PRINTABLE_NAME];
+ int from_addr=0, to_addr=0, myhostlen, j;
+ int deleg_flag=1, mutual_flag=0, replay_flag=0, seq_flag=0;
+ char *address;
+
+ printf("[ Trying SPX ... ]\n");
+ strcpy(targ_printable, "SERVICE:rcmd@");
+ strcat(targ_printable, RemoteHostName);
+
+ input_name_buffer.length = strlen(targ_printable);
+ input_name_buffer.value = targ_printable;
+
+ if (!UserNameRequested) {
+ return(0);
+ }
+
+ major_status = gss_import_name(&status,
+ &input_name_buffer,
+ GSS_C_NULL_OID,
+ &desired_targname);
+
+
+ major_status = gss_display_name(&status,
+ desired_targname,
+ &output_name_buffer,
+ &output_name_type);
+
+ printf("target is '%s'\n", output_name_buffer.value); fflush(stdout);
+
+ major_status = gss_release_buffer(&status, &output_name_buffer);
+
+ input_chan_bindings = (gss_channel_bindings)
+ malloc(sizeof(gss_channel_bindings_desc));
+
+ input_chan_bindings->initiator_addrtype = GSS_C_AF_INET;
+ input_chan_bindings->initiator_address.length = 4;
+ address = (char *) malloc(4);
+ input_chan_bindings->initiator_address.value = (char *) address;
+ address[0] = ((from_addr & 0xff000000) >> 24);
+ address[1] = ((from_addr & 0xff0000) >> 16);
+ address[2] = ((from_addr & 0xff00) >> 8);
+ address[3] = (from_addr & 0xff);
+ input_chan_bindings->acceptor_addrtype = GSS_C_AF_INET;
+ input_chan_bindings->acceptor_address.length = 4;
+ address = (char *) malloc(4);
+ input_chan_bindings->acceptor_address.value = (char *) address;
+ address[0] = ((to_addr & 0xff000000) >> 24);
+ address[1] = ((to_addr & 0xff0000) >> 16);
+ address[2] = ((to_addr & 0xff00) >> 8);
+ address[3] = (to_addr & 0xff);
+ input_chan_bindings->application_data.length = 0;
+
+ req_flags = 0;
+ if (deleg_flag) req_flags = req_flags | 1;
+ if (mutual_flag) req_flags = req_flags | 2;
+ if (replay_flag) req_flags = req_flags | 4;
+ if (seq_flag) req_flags = req_flags | 8;
+
+ major_status = gss_init_sec_context(&status, /* minor status */
+ GSS_C_NO_CREDENTIAL, /* cred handle */
+ &actual_ctxhandle, /* ctx handle */
+ desired_targname, /* target name */
+ GSS_C_NULL_OID, /* mech type */
+ req_flags, /* req flags */
+ 0, /* time req */
+ input_chan_bindings, /* chan binding */
+ GSS_C_NO_BUFFER, /* input token */
+ &actual_mech_type, /* actual mech */
+ &output_token, /* output token */
+ &ret_flags, /* ret flags */
+ &lifetime_rec); /* time rec */
+
+ if ((major_status != GSS_S_COMPLETE) &&
+ (major_status != GSS_S_CONTINUE_NEEDED)) {
+ gss_display_status(&new_status,
+ status,
+ GSS_C_MECH_CODE,
+ GSS_C_NULL_OID,
+ &msg_ctx,
+ &status_string);
+ printf("%s\n", status_string.value);
+ return(0);
+ }
+
+ if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) {
+ return(0);
+ }
+
+ if (!Data(ap, SPX_AUTH, (void *)output_token.value, output_token.length)) {
+ return(0);
+ }
+
+ return(1);
+}
+
+ void
+spx_is(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+ Block datablock;
+ int r;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case SPX_AUTH:
+ input_token.length = cnt;
+ input_token.value = (char *) data;
+
+ gethostname(lhostname, sizeof(lhostname));
+
+ strcpy(targ_printable, "SERVICE:rcmd@");
+ strcat(targ_printable, lhostname);
+
+ input_name_buffer.length = strlen(targ_printable);
+ input_name_buffer.value = targ_printable;
+
+ major_status = gss_import_name(&status,
+ &input_name_buffer,
+ GSS_C_NULL_OID,
+ &desired_targname);
+
+ major_status = gss_acquire_cred(&status,
+ desired_targname,
+ 0,
+ GSS_C_NULL_OID_SET,
+ GSS_C_ACCEPT,
+ &gss_cred_handle,
+ &actual_mechs,
+ &lifetime_rec);
+
+ major_status = gss_release_name(&status, desired_targname);
+
+ input_chan_bindings = (gss_channel_bindings)
+ malloc(sizeof(gss_channel_bindings_desc));
+
+ input_chan_bindings->initiator_addrtype = GSS_C_AF_INET;
+ input_chan_bindings->initiator_address.length = 4;
+ address = (char *) malloc(4);
+ input_chan_bindings->initiator_address.value = (char *) address;
+ address[0] = ((from_addr & 0xff000000) >> 24);
+ address[1] = ((from_addr & 0xff0000) >> 16);
+ address[2] = ((from_addr & 0xff00) >> 8);
+ address[3] = (from_addr & 0xff);
+ input_chan_bindings->acceptor_addrtype = GSS_C_AF_INET;
+ input_chan_bindings->acceptor_address.length = 4;
+ address = (char *) malloc(4);
+ input_chan_bindings->acceptor_address.value = (char *) address;
+ address[0] = ((to_addr & 0xff000000) >> 24);
+ address[1] = ((to_addr & 0xff0000) >> 16);
+ address[2] = ((to_addr & 0xff00) >> 8);
+ address[3] = (to_addr & 0xff);
+ input_chan_bindings->application_data.length = 0;
+
+ major_status = gss_accept_sec_context(&status,
+ &context_handle,
+ gss_cred_handle,
+ &input_token,
+ input_chan_bindings,
+ &src_name,
+ &actual_mech_type,
+ &output_token,
+ &ret_flags,
+ &lifetime_rec,
+ &gss_delegated_cred_handle);
+
+
+ if (major_status != GSS_S_COMPLETE) {
+
+ major_status = gss_display_name(&status,
+ src_name,
+ &fullname_buffer,
+ &fullname_type);
+ Data(ap, SPX_REJECT, (void *)"auth failed", -1);
+ auth_finished(ap, AUTH_REJECT);
+ return;
+ }
+
+ major_status = gss_display_name(&status,
+ src_name,
+ &fullname_buffer,
+ &fullname_type);
+
+
+ Data(ap, SPX_ACCEPT, (void *)output_token.value, output_token.length);
+ auth_finished(ap, AUTH_USER);
+ break;
+
+ default:
+ Data(ap, SPX_REJECT, 0, 0);
+ break;
+ }
+}
+
+
+ void
+spx_reply(ap, data, cnt)
+ Authenticator *ap;
+ unsigned char *data;
+ int cnt;
+{
+ Session_Key skey;
+
+ if (cnt-- < 1)
+ return;
+ switch (*data++) {
+ case SPX_REJECT:
+ if (cnt > 0) {
+ printf("[ SPX refuses authentication because %.*s ]\r\n",
+ cnt, data);
+ } else
+ printf("[ SPX refuses authentication ]\r\n");
+ auth_send_retry();
+ return;
+ case SPX_ACCEPT:
+ printf("[ SPX accepts you ]\n");
+ if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) {
+ /*
+ * Send over the encrypted challenge.
+ */
+ input_token.value = (char *) data;
+ input_token.length = cnt;
+
+ major_status = gss_init_sec_context(&status, /* minor stat */
+ GSS_C_NO_CREDENTIAL, /* cred handle */
+ &actual_ctxhandle, /* ctx handle */
+ desired_targname, /* target name */
+ GSS_C_NULL_OID, /* mech type */
+ req_flags, /* req flags */
+ 0, /* time req */
+ input_chan_bindings, /* chan binding */
+ &input_token, /* input token */
+ &actual_mech_type, /* actual mech */
+ &output_token, /* output token */
+ &ret_flags, /* ret flags */
+ &lifetime_rec); /* time rec */
+
+ if (major_status != GSS_S_COMPLETE) {
+ gss_display_status(&new_status,
+ status,
+ GSS_C_MECH_CODE,
+ GSS_C_NULL_OID,
+ &msg_ctx,
+ &status_string);
+ printf("[ SPX mutual response fails ... '%s' ]\r\n",
+ status_string.value);
+ auth_send_retry();
+ return;
+ }
+ }
+ auth_finished(ap, AUTH_USER);
+ return;
+
+ default:
+ return;
+ }
+}
+
+ int
+spx_status(ap, name, level)
+ Authenticator *ap;
+ char *name;
+ int level;
+{
+
+ gss_buffer_desc fullname_buffer, acl_file_buffer;
+ gss_OID fullname_type;
+ char acl_file[160], fullname[160];
+ int major_status, status = 0;
+ struct passwd *pwd;
+
+ /*
+ * hard code fullname to
+ * "SPX:/C=US/O=Digital/OU=LKG/OU=Sphinx/OU=Users/CN=Kannan Alagappan"
+ * and acl_file to "~kannan/.sphinx"
+ */
+
+ pwd = getpwnam(UserNameRequested);
+ if (pwd == NULL) {
+ return(AUTH_USER); /* not authenticated */
+ }
+
+ strcpy(acl_file, pwd->pw_dir);
+ strcat(acl_file, "/.sphinx");
+ acl_file_buffer.value = acl_file;
+ acl_file_buffer.length = strlen(acl_file);
+
+ major_status = gss_display_name(&status,
+ src_name,
+ &fullname_buffer,
+ &fullname_type);
+
+ if (level < AUTH_USER)
+ return(level);
+
+ major_status = gss__check_acl(&status, &fullname_buffer,
+ &acl_file_buffer);
+
+ if (major_status == GSS_S_COMPLETE) {
+ strcpy(name, UserNameRequested);
+ return(AUTH_VALID);
+ } else {
+ return(AUTH_USER);
+ }
+
+}
+
+#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);}
+#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);}
+
+ void
+spx_printsub(data, cnt, buf, buflen)
+ unsigned char *data, *buf;
+ int cnt, buflen;
+{
+ char lbuf[32];
+ register int i;
+
+ buf[buflen-1] = '\0'; /* make sure its NULL terminated */
+ buflen -= 1;
+
+ switch(data[3]) {
+ case SPX_REJECT: /* Rejected (reason might follow) */
+ strncpy((char *)buf, " REJECT ", buflen);
+ goto common;
+
+ case SPX_ACCEPT: /* Accepted (name might follow) */
+ strncpy((char *)buf, " ACCEPT ", buflen);
+ common:
+ BUMP(buf, buflen);
+ if (cnt <= 4)
+ break;
+ ADDC(buf, buflen, '"');
+ for (i = 4; i < cnt; i++)
+ ADDC(buf, buflen, data[i]);
+ ADDC(buf, buflen, '"');
+ ADDC(buf, buflen, '\0');
+ break;
+
+ case SPX_AUTH: /* Authentication data follows */
+ strncpy((char *)buf, " AUTH", buflen);
+ goto common2;
+
+ default:
+ sprintf(lbuf, " %d (unknown)", data[3]);
+ strncpy((char *)buf, lbuf, buflen);
+ common2:
+ BUMP(buf, buflen);
+ for (i = 4; i < cnt; i++) {
+ sprintf(lbuf, " %d", data[i]);
+ strncpy((char *)buf, lbuf, buflen);
+ BUMP(buf, buflen);
+ }
+ break;
+ }
+}
+
+#endif
+
+#ifdef notdef
+
+prkey(msg, key)
+ char *msg;
+ unsigned char *key;
+{
+ register int i;
+ printf("%s:", msg);
+ for (i = 0; i < 8; i++)
+ printf(" %3d", key[i]);
+ printf("\r\n");
+}
+#endif
diff --git a/contrib/telnet/telnet/authenc.c b/contrib/telnet/telnet/authenc.c
new file mode 100644
index 0000000..545df78
--- /dev/null
+++ b/contrib/telnet/telnet/authenc.c
@@ -0,0 +1,111 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)authenc.c 8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+#if defined(AUTHENTICATION) || defined(ENCRYPTION)
+#include <sys/types.h>
+#include <arpa/telnet.h>
+#include <libtelnet/encrypt.h>
+#include <libtelnet/misc.h>
+
+#include "general.h"
+#include "ring.h"
+#include "externs.h"
+#include "defines.h"
+#include "types.h"
+
+ int
+net_write(str, len)
+ unsigned char *str;
+ int len;
+{
+ if (NETROOM() > len) {
+ ring_supply_data(&netoring, str, len);
+ if (str[0] == IAC && str[1] == SE)
+ printsub('>', &str[2], len-2);
+ return(len);
+ }
+ return(0);
+}
+
+ void
+net_encrypt()
+{
+#ifdef ENCRYPTION
+ if (encrypt_output)
+ ring_encrypt(&netoring, encrypt_output);
+ else
+ ring_clearto(&netoring);
+#endif /* ENCRYPTION */
+}
+
+ int
+telnet_spin()
+{
+ return(-1);
+}
+
+ char *
+telnet_getenv(val)
+ char *val;
+{
+ return((char *)env_getvalue((unsigned char *)val));
+}
+
+ char *
+telnet_gets(prompt, result, length, echo)
+ char *prompt;
+ char *result;
+ int length;
+ int echo;
+{
+ extern char *getpass();
+ extern int globalmode;
+ int om = globalmode;
+ char *res;
+
+ TerminalNewMode(-1);
+ if (echo) {
+ printf("%s", prompt);
+ res = fgets(result, length, stdin);
+ } else if (res = getpass(prompt)) {
+ strncpy(result, res, length);
+ res = result;
+ }
+ TerminalNewMode(om);
+ return(res);
+}
+#endif /* defined(AUTHENTICATION) || defined(ENCRYPTION) */
diff --git a/contrib/telnet/telnet/commands.c b/contrib/telnet/telnet/commands.c
new file mode 100644
index 0000000..41ef5cd
--- /dev/null
+++ b/contrib/telnet/telnet/commands.c
@@ -0,0 +1,2945 @@
+/*
+ * Copyright (c) 1988, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)commands.c 8.4 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#if defined(unix)
+#include <sys/param.h>
+#if defined(CRAY) || defined(sysV88)
+#include <sys/types.h>
+#endif
+#include <sys/file.h>
+#else
+#include <sys/types.h>
+#endif /* defined(unix) */
+#include <sys/socket.h>
+#include <netinet/in.h>
+#ifdef CRAY
+#include <fcntl.h>
+#endif /* CRAY */
+
+#include <signal.h>
+#include <netdb.h>
+#include <ctype.h>
+#include <pwd.h>
+#include <varargs.h>
+#include <errno.h>
+
+#include <arpa/telnet.h>
+
+#include "general.h"
+
+#include "ring.h"
+
+#include "externs.h"
+#include "defines.h"
+#include "types.h"
+
+#if !defined(CRAY) && !defined(sysV88)
+#include <netinet/in_systm.h>
+# if (defined(vax) || defined(tahoe) || defined(hp300)) && !defined(ultrix)
+# include <machine/endian.h>
+# endif /* vax */
+#endif /* !defined(CRAY) && !defined(sysV88) */
+#include <netinet/ip.h>
+
+
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN 64
+#endif MAXHOSTNAMELEN
+
+#if defined(IPPROTO_IP) && defined(IP_TOS)
+int tos = -1;
+#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
+
+char *hostname;
+static char _hostname[MAXHOSTNAMELEN];
+
+extern char *getenv();
+
+extern int isprefix();
+extern char **genget();
+extern int Ambiguous();
+
+static call();
+
+typedef struct {
+ char *name; /* command name */
+ char *help; /* help string (NULL for no help) */
+ int (*handler)(); /* routine which executes command */
+ int needconnect; /* Do we need to be connected to execute? */
+} Command;
+
+static char line[256];
+static char saveline[256];
+static int margc;
+static char *margv[20];
+
+ static void
+makeargv()
+{
+ register char *cp, *cp2, c;
+ register char **argp = margv;
+
+ margc = 0;
+ cp = line;
+ if (*cp == '!') { /* Special case shell escape */
+ strcpy(saveline, line); /* save for shell command */
+ *argp++ = "!"; /* No room in string to get this */
+ margc++;
+ cp++;
+ }
+ while (c = *cp) {
+ register int inquote = 0;
+ while (isspace(c))
+ c = *++cp;
+ if (c == '\0')
+ break;
+ *argp++ = cp;
+ margc += 1;
+ for (cp2 = cp; c != '\0'; c = *++cp) {
+ if (inquote) {
+ if (c == inquote) {
+ inquote = 0;
+ continue;
+ }
+ } else {
+ if (c == '\\') {
+ if ((c = *++cp) == '\0')
+ break;
+ } else if (c == '"') {
+ inquote = '"';
+ continue;
+ } else if (c == '\'') {
+ inquote = '\'';
+ continue;
+ } else if (isspace(c))
+ break;
+ }
+ *cp2++ = c;
+ }
+ *cp2 = '\0';
+ if (c == '\0')
+ break;
+ cp++;
+ }
+ *argp++ = 0;
+}
+
+/*
+ * Make a character string into a number.
+ *
+ * Todo: 1. Could take random integers (12, 0x12, 012, 0b1).
+ */
+
+ static
+special(s)
+ register char *s;
+{
+ register char c;
+ char b;
+
+ switch (*s) {
+ case '^':
+ b = *++s;
+ if (b == '?') {
+ c = b | 0x40; /* DEL */
+ } else {
+ c = b & 0x1f;
+ }
+ break;
+ default:
+ c = *s;
+ break;
+ }
+ return c;
+}
+
+/*
+ * Construct a control character sequence
+ * for a special character.
+ */
+ static char *
+control(c)
+ register cc_t c;
+{
+ static char buf[5];
+ /*
+ * The only way I could get the Sun 3.5 compiler
+ * to shut up about
+ * if ((unsigned int)c >= 0x80)
+ * was to assign "c" to an unsigned int variable...
+ * Arggg....
+ */
+ register unsigned int uic = (unsigned int)c;
+
+ if (uic == 0x7f)
+ return ("^?");
+ if (c == (cc_t)_POSIX_VDISABLE) {
+ return "off";
+ }
+ if (uic >= 0x80) {
+ buf[0] = '\\';
+ buf[1] = ((c>>6)&07) + '0';
+ buf[2] = ((c>>3)&07) + '0';
+ buf[3] = (c&07) + '0';
+ buf[4] = 0;
+ } else if (uic >= 0x20) {
+ buf[0] = c;
+ buf[1] = 0;
+ } else {
+ buf[0] = '^';
+ buf[1] = '@'+c;
+ buf[2] = 0;
+ }
+ return (buf);
+}
+
+
+
+/*
+ * The following are data structures and routines for
+ * the "send" command.
+ *
+ */
+
+struct sendlist {
+ char *name; /* How user refers to it (case independent) */
+ char *help; /* Help information (0 ==> no help) */
+ int needconnect; /* Need to be connected */
+ int narg; /* Number of arguments */
+ int (*handler)(); /* Routine to perform (for special ops) */
+ int nbyte; /* Number of bytes to send this command */
+ int what; /* Character to be sent (<0 ==> special) */
+};
+
+
+static int
+ send_esc P((void)),
+ send_help P((void)),
+ send_docmd P((char *)),
+ send_dontcmd P((char *)),
+ send_willcmd P((char *)),
+ send_wontcmd P((char *));
+
+static struct sendlist Sendlist[] = {
+ { "ao", "Send Telnet Abort output", 1, 0, 0, 2, AO },
+ { "ayt", "Send Telnet 'Are You There'", 1, 0, 0, 2, AYT },
+ { "brk", "Send Telnet Break", 1, 0, 0, 2, BREAK },
+ { "break", 0, 1, 0, 0, 2, BREAK },
+ { "ec", "Send Telnet Erase Character", 1, 0, 0, 2, EC },
+ { "el", "Send Telnet Erase Line", 1, 0, 0, 2, EL },
+ { "escape", "Send current escape character", 1, 0, send_esc, 1, 0 },
+ { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, 0, 2, GA },
+ { "ip", "Send Telnet Interrupt Process", 1, 0, 0, 2, IP },
+ { "intp", 0, 1, 0, 0, 2, IP },
+ { "interrupt", 0, 1, 0, 0, 2, IP },
+ { "intr", 0, 1, 0, 0, 2, IP },
+ { "nop", "Send Telnet 'No operation'", 1, 0, 0, 2, NOP },
+ { "eor", "Send Telnet 'End of Record'", 1, 0, 0, 2, EOR },
+ { "abort", "Send Telnet 'Abort Process'", 1, 0, 0, 2, ABORT },
+ { "susp", "Send Telnet 'Suspend Process'", 1, 0, 0, 2, SUSP },
+ { "eof", "Send Telnet End of File Character", 1, 0, 0, 2, xEOF },
+ { "synch", "Perform Telnet 'Synch operation'", 1, 0, dosynch, 2, 0 },
+ { "getstatus", "Send request for STATUS", 1, 0, get_status, 6, 0 },
+ { "?", "Display send options", 0, 0, send_help, 0, 0 },
+ { "help", 0, 0, 0, send_help, 0, 0 },
+ { "do", 0, 0, 1, send_docmd, 3, 0 },
+ { "dont", 0, 0, 1, send_dontcmd, 3, 0 },
+ { "will", 0, 0, 1, send_willcmd, 3, 0 },
+ { "wont", 0, 0, 1, send_wontcmd, 3, 0 },
+ { 0 }
+};
+
+#define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \
+ sizeof(struct sendlist)))
+
+ static int
+sendcmd(argc, argv)
+ int argc;
+ char **argv;
+{
+ int count; /* how many bytes we are going to need to send */
+ int i;
+ int question = 0; /* was at least one argument a question */
+ struct sendlist *s; /* pointer to current command */
+ int success = 0;
+ int needconnect = 0;
+
+ if (argc < 2) {
+ printf("need at least one argument for 'send' command\n");
+ printf("'send ?' for help\n");
+ return 0;
+ }
+ /*
+ * First, validate all the send arguments.
+ * In addition, we see how much space we are going to need, and
+ * whether or not we will be doing a "SYNCH" operation (which
+ * flushes the network queue).
+ */
+ count = 0;
+ for (i = 1; i < argc; i++) {
+ s = GETSEND(argv[i]);
+ if (s == 0) {
+ printf("Unknown send argument '%s'\n'send ?' for help.\n",
+ argv[i]);
+ return 0;
+ } else if (Ambiguous(s)) {
+ printf("Ambiguous send argument '%s'\n'send ?' for help.\n",
+ argv[i]);
+ return 0;
+ }
+ if (i + s->narg >= argc) {
+ fprintf(stderr,
+ "Need %d argument%s to 'send %s' command. 'send %s ?' for help.\n",
+ s->narg, s->narg == 1 ? "" : "s", s->name, s->name);
+ return 0;
+ }
+ count += s->nbyte;
+ if (s->handler == send_help) {
+ send_help();
+ return 0;
+ }
+
+ i += s->narg;
+ needconnect += s->needconnect;
+ }
+ if (!connected && needconnect) {
+ printf("?Need to be connected first.\n");
+ printf("'send ?' for help\n");
+ return 0;
+ }
+ /* Now, do we have enough room? */
+ if (NETROOM() < count) {
+ printf("There is not enough room in the buffer TO the network\n");
+ printf("to process your request. Nothing will be done.\n");
+ printf("('send synch' will throw away most data in the network\n");
+ printf("buffer, if this might help.)\n");
+ return 0;
+ }
+ /* OK, they are all OK, now go through again and actually send */
+ count = 0;
+ for (i = 1; i < argc; i++) {
+ if ((s = GETSEND(argv[i])) == 0) {
+ fprintf(stderr, "Telnet 'send' error - argument disappeared!\n");
+ (void) quit();
+ /*NOTREACHED*/
+ }
+ if (s->handler) {
+ count++;
+ success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0,
+ (s->narg > 1) ? argv[i+2] : 0);
+ i += s->narg;
+ } else {
+ NET2ADD(IAC, s->what);
+ printoption("SENT", IAC, s->what);
+ }
+ }
+ return (count == success);
+}
+
+ static int
+send_esc()
+{
+ NETADD(escape);
+ return 1;
+}
+
+ static int
+send_docmd(name)
+ char *name;
+{
+ return(send_tncmd(send_do, "do", name));
+}
+
+ static int
+send_dontcmd(name)
+ char *name;
+{
+ return(send_tncmd(send_dont, "dont", name));
+}
+ static int
+send_willcmd(name)
+ char *name;
+{
+ return(send_tncmd(send_will, "will", name));
+}
+ static int
+send_wontcmd(name)
+ char *name;
+{
+ return(send_tncmd(send_wont, "wont", name));
+}
+
+ int
+send_tncmd(func, cmd, name)
+ void (*func)();
+ char *cmd, *name;
+{
+ char **cpp;
+ extern char *telopts[];
+ register int val = 0;
+
+ if (isprefix(name, "help") || isprefix(name, "?")) {
+ register int col, len;
+
+ printf("Usage: send %s <value|option>\n", cmd);
+ printf("\"value\" must be from 0 to 255\n");
+ printf("Valid options are:\n\t");
+
+ col = 8;
+ for (cpp = telopts; *cpp; cpp++) {
+ len = strlen(*cpp) + 3;
+ if (col + len > 65) {
+ printf("\n\t");
+ col = 8;
+ }
+ printf(" \"%s\"", *cpp);
+ col += len;
+ }
+ printf("\n");
+ return 0;
+ }
+ cpp = (char **)genget(name, telopts, sizeof(char *));
+ if (Ambiguous(cpp)) {
+ fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).\n",
+ name, cmd);
+ return 0;
+ }
+ if (cpp) {
+ val = cpp - telopts;
+ } else {
+ register char *cp = name;
+
+ while (*cp >= '0' && *cp <= '9') {
+ val *= 10;
+ val += *cp - '0';
+ cp++;
+ }
+ if (*cp != 0) {
+ fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).\n",
+ name, cmd);
+ return 0;
+ } else if (val < 0 || val > 255) {
+ fprintf(stderr, "'%s': bad value ('send %s ?' for help).\n",
+ name, cmd);
+ return 0;
+ }
+ }
+ if (!connected) {
+ printf("?Need to be connected first.\n");
+ return 0;
+ }
+ (*func)(val, 1);
+ return 1;
+}
+
+ static int
+send_help()
+{
+ struct sendlist *s; /* pointer to current command */
+ for (s = Sendlist; s->name; s++) {
+ if (s->help)
+ printf("%-15s %s\n", s->name, s->help);
+ }
+ return(0);
+}
+
+/*
+ * The following are the routines and data structures referred
+ * to by the arguments to the "toggle" command.
+ */
+
+ static int
+lclchars()
+{
+ donelclchars = 1;
+ return 1;
+}
+
+ static int
+togdebug()
+{
+#ifndef NOT43
+ if (net > 0 &&
+ (SetSockOpt(net, SOL_SOCKET, SO_DEBUG, debug)) < 0) {
+ perror("setsockopt (SO_DEBUG)");
+ }
+#else /* NOT43 */
+ if (debug) {
+ if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 0, 0) < 0)
+ perror("setsockopt (SO_DEBUG)");
+ } else
+ printf("Cannot turn off socket debugging\n");
+#endif /* NOT43 */
+ return 1;
+}
+
+
+ static int
+togcrlf()
+{
+ if (crlf) {
+ printf("Will send carriage returns as telnet <CR><LF>.\n");
+ } else {
+ printf("Will send carriage returns as telnet <CR><NUL>.\n");
+ }
+ return 1;
+}
+
+int binmode;
+
+ static int
+togbinary(val)
+ int val;
+{
+ donebinarytoggle = 1;
+
+ if (val >= 0) {
+ binmode = val;
+ } else {
+ if (my_want_state_is_will(TELOPT_BINARY) &&
+ my_want_state_is_do(TELOPT_BINARY)) {
+ binmode = 1;
+ } else if (my_want_state_is_wont(TELOPT_BINARY) &&
+ my_want_state_is_dont(TELOPT_BINARY)) {
+ binmode = 0;
+ }
+ val = binmode ? 0 : 1;
+ }
+
+ if (val == 1) {
+ if (my_want_state_is_will(TELOPT_BINARY) &&
+ my_want_state_is_do(TELOPT_BINARY)) {
+ printf("Already operating in binary mode with remote host.\n");
+ } else {
+ printf("Negotiating binary mode with remote host.\n");
+ tel_enter_binary(3);
+ }
+ } else {
+ if (my_want_state_is_wont(TELOPT_BINARY) &&
+ my_want_state_is_dont(TELOPT_BINARY)) {
+ printf("Already in network ascii mode with remote host.\n");
+ } else {
+ printf("Negotiating network ascii mode with remote host.\n");
+ tel_leave_binary(3);
+ }
+ }
+ return 1;
+}
+
+ static int
+togrbinary(val)
+ int val;
+{
+ donebinarytoggle = 1;
+
+ if (val == -1)
+ val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1;
+
+ if (val == 1) {
+ if (my_want_state_is_do(TELOPT_BINARY)) {
+ printf("Already receiving in binary mode.\n");
+ } else {
+ printf("Negotiating binary mode on input.\n");
+ tel_enter_binary(1);
+ }
+ } else {
+ if (my_want_state_is_dont(TELOPT_BINARY)) {
+ printf("Already receiving in network ascii mode.\n");
+ } else {
+ printf("Negotiating network ascii mode on input.\n");
+ tel_leave_binary(1);
+ }
+ }
+ return 1;
+}
+
+ static int
+togxbinary(val)
+ int val;
+{
+ donebinarytoggle = 1;
+
+ if (val == -1)
+ val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1;
+
+ if (val == 1) {
+ if (my_want_state_is_will(TELOPT_BINARY)) {
+ printf("Already transmitting in binary mode.\n");
+ } else {
+ printf("Negotiating binary mode on output.\n");
+ tel_enter_binary(2);
+ }
+ } else {
+ if (my_want_state_is_wont(TELOPT_BINARY)) {
+ printf("Already transmitting in network ascii mode.\n");
+ } else {
+ printf("Negotiating network ascii mode on output.\n");
+ tel_leave_binary(2);
+ }
+ }
+ return 1;
+}
+
+
+static int togglehelp P((void));
+#if defined(AUTHENTICATION)
+extern int auth_togdebug P((int));
+#endif
+#ifdef ENCRYPTION
+extern int EncryptAutoEnc P((int));
+extern int EncryptAutoDec P((int));
+extern int EncryptDebug P((int));
+extern int EncryptVerbose P((int));
+#endif /* ENCRYPTION */
+
+struct togglelist {
+ char *name; /* name of toggle */
+ char *help; /* help message */
+ int (*handler)(); /* routine to do actual setting */
+ int *variable;
+ char *actionexplanation;
+};
+
+static struct togglelist Togglelist[] = {
+ { "autoflush",
+ "flushing of output when sending interrupt characters",
+ 0,
+ &autoflush,
+ "flush output when sending interrupt characters" },
+ { "autosynch",
+ "automatic sending of interrupt characters in urgent mode",
+ 0,
+ &autosynch,
+ "send interrupt characters in urgent mode" },
+#if defined(AUTHENTICATION)
+ { "autologin",
+ "automatic sending of login and/or authentication info",
+ 0,
+ &autologin,
+ "send login name and/or authentication information" },
+ { "authdebug",
+ "Toggle authentication debugging",
+ auth_togdebug,
+ 0,
+ "print authentication debugging information" },
+#endif
+#ifdef ENCRYPTION
+ { "autoencrypt",
+ "automatic encryption of data stream",
+ EncryptAutoEnc,
+ 0,
+ "automatically encrypt output" },
+ { "autodecrypt",
+ "automatic decryption of data stream",
+ EncryptAutoDec,
+ 0,
+ "automatically decrypt input" },
+ { "verbose_encrypt",
+ "Toggle verbose encryption output",
+ EncryptVerbose,
+ 0,
+ "print verbose encryption output" },
+ { "encdebug",
+ "Toggle encryption debugging",
+ EncryptDebug,
+ 0,
+ "print encryption debugging information" },
+#endif /* ENCRYPTION */
+ { "skiprc",
+ "don't read ~/.telnetrc file",
+ 0,
+ &skiprc,
+ "skip reading of ~/.telnetrc file" },
+ { "binary",
+ "sending and receiving of binary data",
+ togbinary,
+ 0,
+ 0 },
+ { "inbinary",
+ "receiving of binary data",
+ togrbinary,
+ 0,
+ 0 },
+ { "outbinary",
+ "sending of binary data",
+ togxbinary,
+ 0,
+ 0 },
+ { "crlf",
+ "sending carriage returns as telnet <CR><LF>",
+ togcrlf,
+ &crlf,
+ 0 },
+ { "crmod",
+ "mapping of received carriage returns",
+ 0,
+ &crmod,
+ "map carriage return on output" },
+ { "localchars",
+ "local recognition of certain control characters",
+ lclchars,
+ &localchars,
+ "recognize certain control characters" },
+ { " ", "", 0 }, /* empty line */
+#if defined(unix) && defined(TN3270)
+ { "apitrace",
+ "(debugging) toggle tracing of API transactions",
+ 0,
+ &apitrace,
+ "trace API transactions" },
+ { "cursesdata",
+ "(debugging) toggle printing of hexadecimal curses data",
+ 0,
+ &cursesdata,
+ "print hexadecimal representation of curses data" },
+#endif /* defined(unix) && defined(TN3270) */
+ { "debug",
+ "debugging",
+ togdebug,
+ &debug,
+ "turn on socket level debugging" },
+ { "netdata",
+ "printing of hexadecimal network data (debugging)",
+ 0,
+ &netdata,
+ "print hexadecimal representation of network traffic" },
+ { "prettydump",
+ "output of \"netdata\" to user readable format (debugging)",
+ 0,
+ &prettydump,
+ "print user readable output for \"netdata\"" },
+ { "options",
+ "viewing of options processing (debugging)",
+ 0,
+ &showoptions,
+ "show option processing" },
+#if defined(unix)
+ { "termdata",
+ "(debugging) toggle printing of hexadecimal terminal data",
+ 0,
+ &termdata,
+ "print hexadecimal representation of terminal traffic" },
+#endif /* defined(unix) */
+ { "?",
+ 0,
+ togglehelp },
+ { "help",
+ 0,
+ togglehelp },
+ { 0 }
+};
+
+ static int
+togglehelp()
+{
+ struct togglelist *c;
+
+ for (c = Togglelist; c->name; c++) {
+ if (c->help) {
+ if (*c->help)
+ printf("%-15s toggle %s\n", c->name, c->help);
+ else
+ printf("\n");
+ }
+ }
+ printf("\n");
+ printf("%-15s %s\n", "?", "display help information");
+ return 0;
+}
+
+ static void
+settogglehelp(set)
+ int set;
+{
+ struct togglelist *c;
+
+ for (c = Togglelist; c->name; c++) {
+ if (c->help) {
+ if (*c->help)
+ printf("%-15s %s %s\n", c->name, set ? "enable" : "disable",
+ c->help);
+ else
+ printf("\n");
+ }
+ }
+}
+
+#define GETTOGGLE(name) (struct togglelist *) \
+ genget(name, (char **) Togglelist, sizeof(struct togglelist))
+
+ static int
+toggle(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int retval = 1;
+ char *name;
+ struct togglelist *c;
+
+ if (argc < 2) {
+ fprintf(stderr,
+ "Need an argument to 'toggle' command. 'toggle ?' for help.\n");
+ return 0;
+ }
+ argc--;
+ argv++;
+ while (argc--) {
+ name = *argv++;
+ c = GETTOGGLE(name);
+ if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\n",
+ name);
+ return 0;
+ } else if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\n",
+ name);
+ return 0;
+ } else {
+ if (c->variable) {
+ *c->variable = !*c->variable; /* invert it */
+ if (c->actionexplanation) {
+ printf("%s %s.\n", *c->variable? "Will" : "Won't",
+ c->actionexplanation);
+ }
+ }
+ if (c->handler) {
+ retval &= (*c->handler)(-1);
+ }
+ }
+ }
+ return retval;
+}
+
+/*
+ * The following perform the "set" command.
+ */
+
+#ifdef USE_TERMIO
+struct termio new_tc = { 0 };
+#endif
+
+struct setlist {
+ char *name; /* name */
+ char *help; /* help information */
+ void (*handler)();
+ cc_t *charp; /* where it is located at */
+};
+
+static struct setlist Setlist[] = {
+#ifdef KLUDGELINEMODE
+ { "echo", "character to toggle local echoing on/off", 0, &echoc },
+#endif
+ { "escape", "character to escape back to telnet command mode", 0, &escape },
+ { "rlogin", "rlogin escape character", 0, &rlogin },
+ { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile},
+ { " ", "" },
+ { " ", "The following need 'localchars' to be toggled true", 0, 0 },
+ { "flushoutput", "character to cause an Abort Output", 0, termFlushCharp },
+ { "interrupt", "character to cause an Interrupt Process", 0, termIntCharp },
+ { "quit", "character to cause an Abort process", 0, termQuitCharp },
+ { "eof", "character to cause an EOF ", 0, termEofCharp },
+ { " ", "" },
+ { " ", "The following are for local editing in linemode", 0, 0 },
+ { "erase", "character to use to erase a character", 0, termEraseCharp },
+ { "kill", "character to use to erase a line", 0, termKillCharp },
+ { "lnext", "character to use for literal next", 0, termLiteralNextCharp },
+ { "susp", "character to cause a Suspend Process", 0, termSuspCharp },
+ { "reprint", "character to use for line reprint", 0, termRprntCharp },
+ { "worderase", "character to use to erase a word", 0, termWerasCharp },
+ { "start", "character to use for XON", 0, termStartCharp },
+ { "stop", "character to use for XOFF", 0, termStopCharp },
+ { "forw1", "alternate end of line character", 0, termForw1Charp },
+ { "forw2", "alternate end of line character", 0, termForw2Charp },
+ { "ayt", "alternate AYT character", 0, termAytCharp },
+ { 0 }
+};
+
+#if defined(CRAY) && !defined(__STDC__)
+/* Work around compiler bug in pcc 4.1.5 */
+ void
+_setlist_init()
+{
+#ifndef KLUDGELINEMODE
+#define N 5
+#else
+#define N 6
+#endif
+ Setlist[N+0].charp = &termFlushChar;
+ Setlist[N+1].charp = &termIntChar;
+ Setlist[N+2].charp = &termQuitChar;
+ Setlist[N+3].charp = &termEofChar;
+ Setlist[N+6].charp = &termEraseChar;
+ Setlist[N+7].charp = &termKillChar;
+ Setlist[N+8].charp = &termLiteralNextChar;
+ Setlist[N+9].charp = &termSuspChar;
+ Setlist[N+10].charp = &termRprntChar;
+ Setlist[N+11].charp = &termWerasChar;
+ Setlist[N+12].charp = &termStartChar;
+ Setlist[N+13].charp = &termStopChar;
+ Setlist[N+14].charp = &termForw1Char;
+ Setlist[N+15].charp = &termForw2Char;
+ Setlist[N+16].charp = &termAytChar;
+#undef N
+}
+#endif /* defined(CRAY) && !defined(__STDC__) */
+
+ static struct setlist *
+getset(name)
+ char *name;
+{
+ return (struct setlist *)
+ genget(name, (char **) Setlist, sizeof(struct setlist));
+}
+
+ void
+set_escape_char(s)
+ char *s;
+{
+ if (rlogin != _POSIX_VDISABLE) {
+ rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE;
+ printf("Telnet rlogin escape character is '%s'.\n",
+ control(rlogin));
+ } else {
+ escape = (s && *s) ? special(s) : _POSIX_VDISABLE;
+ printf("Telnet escape character is '%s'.\n", control(escape));
+ }
+}
+
+ static int
+setcmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int value;
+ struct setlist *ct;
+ struct togglelist *c;
+
+ if (argc < 2 || argc > 3) {
+ printf("Format is 'set Name Value'\n'set ?' for help.\n");
+ return 0;
+ }
+ if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) {
+ for (ct = Setlist; ct->name; ct++)
+ printf("%-15s %s\n", ct->name, ct->help);
+ printf("\n");
+ settogglehelp(1);
+ printf("%-15s %s\n", "?", "display help information");
+ return 0;
+ }
+
+ ct = getset(argv[1]);
+ if (ct == 0) {
+ c = GETTOGGLE(argv[1]);
+ if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('set ?' for help).\n",
+ argv[1]);
+ return 0;
+ } else if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (c->variable) {
+ if ((argc == 2) || (strcmp("on", argv[2]) == 0))
+ *c->variable = 1;
+ else if (strcmp("off", argv[2]) == 0)
+ *c->variable = 0;
+ else {
+ printf("Format is 'set togglename [on|off]'\n'set ?' for help.\n");
+ return 0;
+ }
+ if (c->actionexplanation) {
+ printf("%s %s.\n", *c->variable? "Will" : "Won't",
+ c->actionexplanation);
+ }
+ }
+ if (c->handler)
+ (*c->handler)(1);
+ } else if (argc != 3) {
+ printf("Format is 'set Name Value'\n'set ?' for help.\n");
+ return 0;
+ } else if (Ambiguous(ct)) {
+ fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n",
+ argv[1]);
+ return 0;
+ } else if (ct->handler) {
+ (*ct->handler)(argv[2]);
+ printf("%s set to \"%s\".\n", ct->name, (char *)ct->charp);
+ } else {
+ if (strcmp("off", argv[2])) {
+ value = special(argv[2]);
+ } else {
+ value = _POSIX_VDISABLE;
+ }
+ *(ct->charp) = (cc_t)value;
+ printf("%s character is '%s'.\n", ct->name, control(*(ct->charp)));
+ }
+ slc_check();
+ return 1;
+}
+
+ static int
+unsetcmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct setlist *ct;
+ struct togglelist *c;
+ register char *name;
+
+ if (argc < 2) {
+ fprintf(stderr,
+ "Need an argument to 'unset' command. 'unset ?' for help.\n");
+ return 0;
+ }
+ if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) {
+ for (ct = Setlist; ct->name; ct++)
+ printf("%-15s %s\n", ct->name, ct->help);
+ printf("\n");
+ settogglehelp(0);
+ printf("%-15s %s\n", "?", "display help information");
+ return 0;
+ }
+
+ argc--;
+ argv++;
+ while (argc--) {
+ name = *argv++;
+ ct = getset(name);
+ if (ct == 0) {
+ c = GETTOGGLE(name);
+ if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\n",
+ name);
+ return 0;
+ } else if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n",
+ name);
+ return 0;
+ }
+ if (c->variable) {
+ *c->variable = 0;
+ if (c->actionexplanation) {
+ printf("%s %s.\n", *c->variable? "Will" : "Won't",
+ c->actionexplanation);
+ }
+ }
+ if (c->handler)
+ (*c->handler)(0);
+ } else if (Ambiguous(ct)) {
+ fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n",
+ name);
+ return 0;
+ } else if (ct->handler) {
+ (*ct->handler)(0);
+ printf("%s reset to \"%s\".\n", ct->name, (char *)ct->charp);
+ } else {
+ *(ct->charp) = _POSIX_VDISABLE;
+ printf("%s character is '%s'.\n", ct->name, control(*(ct->charp)));
+ }
+ }
+ return 1;
+}
+
+/*
+ * The following are the data structures and routines for the
+ * 'mode' command.
+ */
+#ifdef KLUDGELINEMODE
+extern int kludgelinemode;
+
+ static int
+dokludgemode()
+{
+ kludgelinemode = 1;
+ send_wont(TELOPT_LINEMODE, 1);
+ send_dont(TELOPT_SGA, 1);
+ send_dont(TELOPT_ECHO, 1);
+}
+#endif
+
+ static int
+dolinemode()
+{
+#ifdef KLUDGELINEMODE
+ if (kludgelinemode)
+ send_dont(TELOPT_SGA, 1);
+#endif
+ send_will(TELOPT_LINEMODE, 1);
+ send_dont(TELOPT_ECHO, 1);
+ return 1;
+}
+
+ static int
+docharmode()
+{
+#ifdef KLUDGELINEMODE
+ if (kludgelinemode)
+ send_do(TELOPT_SGA, 1);
+ else
+#endif
+ send_wont(TELOPT_LINEMODE, 1);
+ send_do(TELOPT_ECHO, 1);
+ return 1;
+}
+
+ static int
+dolmmode(bit, on)
+ int bit, on;
+{
+ unsigned char c;
+ extern int linemode;
+
+ if (my_want_state_is_wont(TELOPT_LINEMODE)) {
+ printf("?Need to have LINEMODE option enabled first.\n");
+ printf("'mode ?' for help.\n");
+ return 0;
+ }
+
+ if (on)
+ c = (linemode | bit);
+ else
+ c = (linemode & ~bit);
+ lm_mode(&c, 1, 1);
+ return 1;
+}
+
+ int
+setmode(bit)
+{
+ return dolmmode(bit, 1);
+}
+
+ int
+clearmode(bit)
+{
+ return dolmmode(bit, 0);
+}
+
+struct modelist {
+ char *name; /* command name */
+ char *help; /* help string */
+ int (*handler)(); /* routine which executes command */
+ int needconnect; /* Do we need to be connected to execute? */
+ int arg1;
+};
+
+extern int modehelp();
+
+static struct modelist ModeList[] = {
+ { "character", "Disable LINEMODE option", docharmode, 1 },
+#ifdef KLUDGELINEMODE
+ { "", "(or disable obsolete line-by-line mode)", 0 },
+#endif
+ { "line", "Enable LINEMODE option", dolinemode, 1 },
+#ifdef KLUDGELINEMODE
+ { "", "(or enable obsolete line-by-line mode)", 0 },
+#endif
+ { "", "", 0 },
+ { "", "These require the LINEMODE option to be enabled", 0 },
+ { "isig", "Enable signal trapping", setmode, 1, MODE_TRAPSIG },
+ { "+isig", 0, setmode, 1, MODE_TRAPSIG },
+ { "-isig", "Disable signal trapping", clearmode, 1, MODE_TRAPSIG },
+ { "edit", "Enable character editing", setmode, 1, MODE_EDIT },
+ { "+edit", 0, setmode, 1, MODE_EDIT },
+ { "-edit", "Disable character editing", clearmode, 1, MODE_EDIT },
+ { "softtabs", "Enable tab expansion", setmode, 1, MODE_SOFT_TAB },
+ { "+softtabs", 0, setmode, 1, MODE_SOFT_TAB },
+ { "-softtabs", "Disable character editing", clearmode, 1, MODE_SOFT_TAB },
+ { "litecho", "Enable literal character echo", setmode, 1, MODE_LIT_ECHO },
+ { "+litecho", 0, setmode, 1, MODE_LIT_ECHO },
+ { "-litecho", "Disable literal character echo", clearmode, 1, MODE_LIT_ECHO },
+ { "help", 0, modehelp, 0 },
+#ifdef KLUDGELINEMODE
+ { "kludgeline", 0, dokludgemode, 1 },
+#endif
+ { "", "", 0 },
+ { "?", "Print help information", modehelp, 0 },
+ { 0 },
+};
+
+
+ int
+modehelp()
+{
+ struct modelist *mt;
+
+ printf("format is: 'mode Mode', where 'Mode' is one of:\n\n");
+ for (mt = ModeList; mt->name; mt++) {
+ if (mt->help) {
+ if (*mt->help)
+ printf("%-15s %s\n", mt->name, mt->help);
+ else
+ printf("\n");
+ }
+ }
+ return 0;
+}
+
+#define GETMODECMD(name) (struct modelist *) \
+ genget(name, (char **) ModeList, sizeof(struct modelist))
+
+ static int
+modecmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct modelist *mt;
+
+ if (argc != 2) {
+ printf("'mode' command requires an argument\n");
+ printf("'mode ?' for help.\n");
+ } else if ((mt = GETMODECMD(argv[1])) == 0) {
+ fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\n", argv[1]);
+ } else if (Ambiguous(mt)) {
+ fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\n", argv[1]);
+ } else if (mt->needconnect && !connected) {
+ printf("?Need to be connected first.\n");
+ printf("'mode ?' for help.\n");
+ } else if (mt->handler) {
+ return (*mt->handler)(mt->arg1);
+ }
+ return 0;
+}
+
+/*
+ * The following data structures and routines implement the
+ * "display" command.
+ */
+
+ static int
+display(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct togglelist *tl;
+ struct setlist *sl;
+
+#define dotog(tl) if (tl->variable && tl->actionexplanation) { \
+ if (*tl->variable) { \
+ printf("will"); \
+ } else { \
+ printf("won't"); \
+ } \
+ printf(" %s.\n", tl->actionexplanation); \
+ }
+
+#define doset(sl) if (sl->name && *sl->name != ' ') { \
+ if (sl->handler == 0) \
+ printf("%-15s [%s]\n", sl->name, control(*sl->charp)); \
+ else \
+ printf("%-15s \"%s\"\n", sl->name, (char *)sl->charp); \
+ }
+
+ if (argc == 1) {
+ for (tl = Togglelist; tl->name; tl++) {
+ dotog(tl);
+ }
+ printf("\n");
+ for (sl = Setlist; sl->name; sl++) {
+ doset(sl);
+ }
+ } else {
+ int i;
+
+ for (i = 1; i < argc; i++) {
+ sl = getset(argv[i]);
+ tl = GETTOGGLE(argv[i]);
+ if (Ambiguous(sl) || Ambiguous(tl)) {
+ printf("?Ambiguous argument '%s'.\n", argv[i]);
+ return 0;
+ } else if (!sl && !tl) {
+ printf("?Unknown argument '%s'.\n", argv[i]);
+ return 0;
+ } else {
+ if (tl) {
+ dotog(tl);
+ }
+ if (sl) {
+ doset(sl);
+ }
+ }
+ }
+ }
+/*@*/optionstatus();
+#ifdef ENCRYPTION
+ EncryptStatus();
+#endif /* ENCRYPTION */
+ return 1;
+#undef doset
+#undef dotog
+}
+
+/*
+ * The following are the data structures, and many of the routines,
+ * relating to command processing.
+ */
+
+/*
+ * Set the escape character.
+ */
+ static int
+setescape(argc, argv)
+ int argc;
+ char *argv[];
+{
+ register char *arg;
+ char buf[50];
+
+ printf(
+ "Deprecated usage - please use 'set escape%s%s' in the future.\n",
+ (argc > 2)? " ":"", (argc > 2)? argv[1]: "");
+ if (argc > 2)
+ arg = argv[1];
+ else {
+ printf("new escape character: ");
+ (void) fgets(buf, sizeof(buf), stdin);
+ arg = buf;
+ }
+ if (arg[0] != '\0')
+ escape = arg[0];
+ if (!In3270) {
+ printf("Escape character is '%s'.\n", control(escape));
+ }
+ (void) fflush(stdout);
+ return 1;
+}
+
+ /*VARARGS*/
+ static int
+togcrmod()
+{
+ crmod = !crmod;
+ printf("Deprecated usage - please use 'toggle crmod' in the future.\n");
+ printf("%s map carriage return on output.\n", crmod ? "Will" : "Won't");
+ (void) fflush(stdout);
+ return 1;
+}
+
+ /*VARARGS*/
+ int
+suspend()
+{
+#ifdef SIGTSTP
+ setcommandmode();
+ {
+ long oldrows, oldcols, newrows, newcols, err;
+
+ err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
+ (void) kill(0, SIGTSTP);
+ /*
+ * If we didn't get the window size before the SUSPEND, but we
+ * can get them now (?), then send the NAWS to make sure that
+ * we are set up for the right window size.
+ */
+ if (TerminalWindowSize(&newrows, &newcols) && connected &&
+ (err || ((oldrows != newrows) || (oldcols != newcols)))) {
+ sendnaws();
+ }
+ }
+ /* reget parameters in case they were changed */
+ TerminalSaveState();
+ setconnmode(0);
+#else
+ printf("Suspend is not supported. Try the '!' command instead\n");
+#endif
+ return 1;
+}
+
+#if !defined(TN3270)
+ /*ARGSUSED*/
+ int
+shell(argc, argv)
+ int argc;
+ char *argv[];
+{
+ long oldrows, oldcols, newrows, newcols, err;
+
+ setcommandmode();
+
+ err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0;
+ switch(vfork()) {
+ case -1:
+ perror("Fork failed\n");
+ break;
+
+ case 0:
+ {
+ /*
+ * Fire up the shell in the child.
+ */
+ register char *shellp, *shellname;
+ extern char *strrchr();
+
+ shellp = getenv("SHELL");
+ if (shellp == NULL)
+ shellp = "/bin/sh";
+ if ((shellname = strrchr(shellp, '/')) == 0)
+ shellname = shellp;
+ else
+ shellname++;
+ if (argc > 1)
+ execl(shellp, shellname, "-c", &saveline[1], 0);
+ else
+ execl(shellp, shellname, 0);
+ perror("Execl");
+ _exit(1);
+ }
+ default:
+ (void)wait((int *)0); /* Wait for the shell to complete */
+
+ if (TerminalWindowSize(&newrows, &newcols) && connected &&
+ (err || ((oldrows != newrows) || (oldcols != newcols)))) {
+ sendnaws();
+ }
+ break;
+ }
+ return 1;
+}
+#else /* !defined(TN3270) */
+extern int shell();
+#endif /* !defined(TN3270) */
+
+ /*VARARGS*/
+ static
+bye(argc, argv)
+ int argc; /* Number of arguments */
+ char *argv[]; /* arguments */
+{
+ extern int resettermname;
+
+ if (connected) {
+ (void) shutdown(net, 2);
+ printf("Connection closed.\n");
+ (void) NetClose(net);
+ connected = 0;
+ resettermname = 1;
+#if defined(AUTHENTICATION) || defined(ENCRYPTION)
+ auth_encrypt_connect(connected);
+#endif /* defined(AUTHENTICATION) || defined(ENCRYPTION) */
+ /* reset options */
+ tninit();
+#if defined(TN3270)
+ SetIn3270(); /* Get out of 3270 mode */
+#endif /* defined(TN3270) */
+ }
+ if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) {
+ longjmp(toplevel, 1);
+ /* NOTREACHED */
+ }
+ return 1; /* Keep lint, etc., happy */
+}
+
+/*VARARGS*/
+quit()
+{
+ (void) call(bye, "bye", "fromquit", 0);
+ Exit(0);
+ /*NOTREACHED*/
+}
+
+/*VARARGS*/
+ int
+logout()
+{
+ send_do(TELOPT_LOGOUT, 1);
+ (void) netflush();
+ return 1;
+}
+
+
+/*
+ * The SLC command.
+ */
+
+struct slclist {
+ char *name;
+ char *help;
+ void (*handler)();
+ int arg;
+};
+
+static void slc_help();
+
+struct slclist SlcList[] = {
+ { "export", "Use local special character definitions",
+ slc_mode_export, 0 },
+ { "import", "Use remote special character definitions",
+ slc_mode_import, 1 },
+ { "check", "Verify remote special character definitions",
+ slc_mode_import, 0 },
+ { "help", 0, slc_help, 0 },
+ { "?", "Print help information", slc_help, 0 },
+ { 0 },
+};
+
+ static void
+slc_help()
+{
+ struct slclist *c;
+
+ for (c = SlcList; c->name; c++) {
+ if (c->help) {
+ if (*c->help)
+ printf("%-15s %s\n", c->name, c->help);
+ else
+ printf("\n");
+ }
+ }
+}
+
+ static struct slclist *
+getslc(name)
+ char *name;
+{
+ return (struct slclist *)
+ genget(name, (char **) SlcList, sizeof(struct slclist));
+}
+
+ static
+slccmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct slclist *c;
+
+ if (argc != 2) {
+ fprintf(stderr,
+ "Need an argument to 'slc' command. 'slc ?' for help.\n");
+ return 0;
+ }
+ c = getslc(argv[1]);
+ if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ (*c->handler)(c->arg);
+ slcstate();
+ return 1;
+}
+
+/*
+ * The ENVIRON command.
+ */
+
+struct envlist {
+ char *name;
+ char *help;
+ void (*handler)();
+ int narg;
+};
+
+extern struct env_lst *
+ env_define P((unsigned char *, unsigned char *));
+extern void
+ env_undefine P((unsigned char *)),
+ env_export P((unsigned char *)),
+ env_unexport P((unsigned char *)),
+ env_send P((unsigned char *)),
+#if defined(OLD_ENVIRON) && defined(ENV_HACK)
+ env_varval P((unsigned char *)),
+#endif
+ env_list P((void));
+static void
+ env_help P((void));
+
+struct envlist EnvList[] = {
+ { "define", "Define an environment variable",
+ (void (*)())env_define, 2 },
+ { "undefine", "Undefine an environment variable",
+ env_undefine, 1 },
+ { "export", "Mark an environment variable for automatic export",
+ env_export, 1 },
+ { "unexport", "Don't mark an environment variable for automatic export",
+ env_unexport, 1 },
+ { "send", "Send an environment variable", env_send, 1 },
+ { "list", "List the current environment variables",
+ env_list, 0 },
+#if defined(OLD_ENVIRON) && defined(ENV_HACK)
+ { "varval", "Reverse VAR and VALUE (auto, right, wrong, status)",
+ env_varval, 1 },
+#endif
+ { "help", 0, env_help, 0 },
+ { "?", "Print help information", env_help, 0 },
+ { 0 },
+};
+
+ static void
+env_help()
+{
+ struct envlist *c;
+
+ for (c = EnvList; c->name; c++) {
+ if (c->help) {
+ if (*c->help)
+ printf("%-15s %s\n", c->name, c->help);
+ else
+ printf("\n");
+ }
+ }
+}
+
+ static struct envlist *
+getenvcmd(name)
+ char *name;
+{
+ return (struct envlist *)
+ genget(name, (char **) EnvList, sizeof(struct envlist));
+}
+
+env_cmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct envlist *c;
+
+ if (argc < 2) {
+ fprintf(stderr,
+ "Need an argument to 'environ' command. 'environ ?' for help.\n");
+ return 0;
+ }
+ c = getenvcmd(argv[1]);
+ if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (c->narg + 2 != argc) {
+ fprintf(stderr,
+ "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\n",
+ c->narg < argc + 2 ? "only " : "",
+ c->narg, c->narg == 1 ? "" : "s", c->name);
+ return 0;
+ }
+ (*c->handler)(argv[2], argv[3]);
+ return 1;
+}
+
+struct env_lst {
+ struct env_lst *next; /* pointer to next structure */
+ struct env_lst *prev; /* pointer to previous structure */
+ unsigned char *var; /* pointer to variable name */
+ unsigned char *value; /* pointer to variable value */
+ int export; /* 1 -> export with default list of variables */
+ int welldefined; /* A well defined variable */
+};
+
+struct env_lst envlisthead;
+
+ struct env_lst *
+env_find(var)
+ unsigned char *var;
+{
+ register struct env_lst *ep;
+
+ for (ep = envlisthead.next; ep; ep = ep->next) {
+ if (strcmp((char *)ep->var, (char *)var) == 0)
+ return(ep);
+ }
+ return(NULL);
+}
+
+ void
+env_init()
+{
+ extern char **environ;
+ register char **epp, *cp;
+ register struct env_lst *ep;
+ extern char *strchr();
+
+ for (epp = environ; *epp; epp++) {
+ if (cp = strchr(*epp, '=')) {
+ *cp = '\0';
+ ep = env_define((unsigned char *)*epp,
+ (unsigned char *)cp+1);
+ ep->export = 0;
+ *cp = '=';
+ }
+ }
+ /*
+ * Special case for DISPLAY variable. If it is ":0.0" or
+ * "unix:0.0", we have to get rid of "unix" and insert our
+ * hostname.
+ */
+ if ((ep = env_find("DISPLAY"))
+ && ((*ep->value == ':')
+ || (strncmp((char *)ep->value, "unix:", 5) == 0))) {
+ char hbuf[256+1];
+ char *cp2 = strchr((char *)ep->value, ':');
+
+ gethostname(hbuf, 256);
+ hbuf[256] = '\0';
+ cp = (char *)malloc(strlen(hbuf) + strlen(cp2) + 1);
+ sprintf((char *)cp, "%s%s", hbuf, cp2);
+ free(ep->value);
+ ep->value = (unsigned char *)cp;
+ }
+ /*
+ * If USER is not defined, but LOGNAME is, then add
+ * USER with the value from LOGNAME. By default, we
+ * don't export the USER variable.
+ */
+ if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) {
+ env_define((unsigned char *)"USER", ep->value);
+ env_unexport((unsigned char *)"USER");
+ }
+ env_export((unsigned char *)"DISPLAY");
+ env_export((unsigned char *)"PRINTER");
+}
+
+ struct env_lst *
+env_define(var, value)
+ unsigned char *var, *value;
+{
+ register struct env_lst *ep;
+
+ if (ep = env_find(var)) {
+ if (ep->var)
+ free(ep->var);
+ if (ep->value)
+ free(ep->value);
+ } else {
+ ep = (struct env_lst *)malloc(sizeof(struct env_lst));
+ ep->next = envlisthead.next;
+ envlisthead.next = ep;
+ ep->prev = &envlisthead;
+ if (ep->next)
+ ep->next->prev = ep;
+ }
+ ep->welldefined = opt_welldefined(var);
+ ep->export = 1;
+ ep->var = (unsigned char *)strdup((char *)var);
+ ep->value = (unsigned char *)strdup((char *)value);
+ return(ep);
+}
+
+ void
+env_undefine(var)
+ unsigned char *var;
+{
+ register struct env_lst *ep;
+
+ if (ep = env_find(var)) {
+ ep->prev->next = ep->next;
+ if (ep->next)
+ ep->next->prev = ep->prev;
+ if (ep->var)
+ free(ep->var);
+ if (ep->value)
+ free(ep->value);
+ free(ep);
+ }
+}
+
+ void
+env_export(var)
+ unsigned char *var;
+{
+ register struct env_lst *ep;
+
+ if (ep = env_find(var))
+ ep->export = 1;
+}
+
+ void
+env_unexport(var)
+ unsigned char *var;
+{
+ register struct env_lst *ep;
+
+ if (ep = env_find(var))
+ ep->export = 0;
+}
+
+ void
+env_send(var)
+ unsigned char *var;
+{
+ register struct env_lst *ep;
+
+ if (my_state_is_wont(TELOPT_NEW_ENVIRON)
+#ifdef OLD_ENVIRON
+ && my_state_is_wont(TELOPT_OLD_ENVIRON)
+#endif
+ ) {
+ fprintf(stderr,
+ "Cannot send '%s': Telnet ENVIRON option not enabled\n",
+ var);
+ return;
+ }
+ ep = env_find(var);
+ if (ep == 0) {
+ fprintf(stderr, "Cannot send '%s': variable not defined\n",
+ var);
+ return;
+ }
+ env_opt_start_info();
+ env_opt_add(ep->var);
+ env_opt_end(0);
+}
+
+ void
+env_list()
+{
+ register struct env_lst *ep;
+
+ for (ep = envlisthead.next; ep; ep = ep->next) {
+ printf("%c %-20s %s\n", ep->export ? '*' : ' ',
+ ep->var, ep->value);
+ }
+}
+
+ unsigned char *
+env_default(init, welldefined)
+ int init;
+{
+ static struct env_lst *nep = NULL;
+
+ if (init) {
+ nep = &envlisthead;
+ return;
+ }
+ if (nep) {
+ while (nep = nep->next) {
+ if (nep->export && (nep->welldefined == welldefined))
+ return(nep->var);
+ }
+ }
+ return(NULL);
+}
+
+ unsigned char *
+env_getvalue(var)
+ unsigned char *var;
+{
+ register struct env_lst *ep;
+
+ if (ep = env_find(var))
+ return(ep->value);
+ return(NULL);
+}
+
+#if defined(OLD_ENVIRON) && defined(ENV_HACK)
+ void
+env_varval(what)
+ unsigned char *what;
+{
+ extern int old_env_var, old_env_value, env_auto;
+ int len = strlen((char *)what);
+
+ if (len == 0)
+ goto unknown;
+
+ if (strncasecmp((char *)what, "status", len) == 0) {
+ if (env_auto)
+ printf("%s%s", "VAR and VALUE are/will be ",
+ "determined automatically\n");
+ if (old_env_var == OLD_ENV_VAR)
+ printf("VAR and VALUE set to correct definitions\n");
+ else
+ printf("VAR and VALUE definitions are reversed\n");
+ } else if (strncasecmp((char *)what, "auto", len) == 0) {
+ env_auto = 1;
+ old_env_var = OLD_ENV_VALUE;
+ old_env_value = OLD_ENV_VAR;
+ } else if (strncasecmp((char *)what, "right", len) == 0) {
+ env_auto = 0;
+ old_env_var = OLD_ENV_VAR;
+ old_env_value = OLD_ENV_VALUE;
+ } else if (strncasecmp((char *)what, "wrong", len) == 0) {
+ env_auto = 0;
+ old_env_var = OLD_ENV_VALUE;
+ old_env_value = OLD_ENV_VAR;
+ } else {
+unknown:
+ printf("Unknown \"varval\" command. (\"auto\", \"right\", \"wrong\", \"status\")\n");
+ }
+}
+#endif
+
+#if defined(AUTHENTICATION)
+/*
+ * The AUTHENTICATE command.
+ */
+
+struct authlist {
+ char *name;
+ char *help;
+ int (*handler)();
+ int narg;
+};
+
+extern int
+ auth_enable P((char *)),
+ auth_disable P((char *)),
+ auth_status P((void));
+static int
+ auth_help P((void));
+
+struct authlist AuthList[] = {
+ { "status", "Display current status of authentication information",
+ auth_status, 0 },
+ { "disable", "Disable an authentication type ('auth disable ?' for more)",
+ auth_disable, 1 },
+ { "enable", "Enable an authentication type ('auth enable ?' for more)",
+ auth_enable, 1 },
+ { "help", 0, auth_help, 0 },
+ { "?", "Print help information", auth_help, 0 },
+ { 0 },
+};
+
+ static int
+auth_help()
+{
+ struct authlist *c;
+
+ for (c = AuthList; c->name; c++) {
+ if (c->help) {
+ if (*c->help)
+ printf("%-15s %s\n", c->name, c->help);
+ else
+ printf("\n");
+ }
+ }
+ return 0;
+}
+
+auth_cmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct authlist *c;
+
+ if (argc < 2) {
+ fprintf(stderr,
+ "Need an argument to 'auth' command. 'auth ?' for help.\n");
+ return 0;
+ }
+
+ c = (struct authlist *)
+ genget(argv[1], (char **) AuthList, sizeof(struct authlist));
+ if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (c->narg + 2 != argc) {
+ fprintf(stderr,
+ "Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\n",
+ c->narg < argc + 2 ? "only " : "",
+ c->narg, c->narg == 1 ? "" : "s", c->name);
+ return 0;
+ }
+ return((*c->handler)(argv[2], argv[3]));
+}
+#endif
+
+#ifdef ENCRYPTION
+/*
+ * The ENCRYPT command.
+ */
+
+struct encryptlist {
+ char *name;
+ char *help;
+ int (*handler)();
+ int needconnect;
+ int minarg;
+ int maxarg;
+};
+
+extern int
+ EncryptEnable P((char *, char *)),
+ EncryptDisable P((char *, char *)),
+ EncryptType P((char *, char *)),
+ EncryptStart P((char *)),
+ EncryptStartInput P((void)),
+ EncryptStartOutput P((void)),
+ EncryptStop P((char *)),
+ EncryptStopInput P((void)),
+ EncryptStopOutput P((void)),
+ EncryptStatus P((void));
+static int
+ EncryptHelp P((void));
+
+struct encryptlist EncryptList[] = {
+ { "enable", "Enable encryption. ('encrypt enable ?' for more)",
+ EncryptEnable, 1, 1, 2 },
+ { "disable", "Disable encryption. ('encrypt enable ?' for more)",
+ EncryptDisable, 0, 1, 2 },
+ { "type", "Set encryption type. ('encrypt type ?' for more)",
+ EncryptType, 0, 1, 1 },
+ { "start", "Start encryption. ('encrypt start ?' for more)",
+ EncryptStart, 1, 0, 1 },
+ { "stop", "Stop encryption. ('encrypt stop ?' for more)",
+ EncryptStop, 1, 0, 1 },
+ { "input", "Start encrypting the input stream",
+ EncryptStartInput, 1, 0, 0 },
+ { "-input", "Stop encrypting the input stream",
+ EncryptStopInput, 1, 0, 0 },
+ { "output", "Start encrypting the output stream",
+ EncryptStartOutput, 1, 0, 0 },
+ { "-output", "Stop encrypting the output stream",
+ EncryptStopOutput, 1, 0, 0 },
+
+ { "status", "Display current status of authentication information",
+ EncryptStatus, 0, 0, 0 },
+ { "help", 0, EncryptHelp, 0, 0, 0 },
+ { "?", "Print help information", EncryptHelp, 0, 0, 0 },
+ { 0 },
+};
+
+ static int
+EncryptHelp()
+{
+ struct encryptlist *c;
+
+ for (c = EncryptList; c->name; c++) {
+ if (c->help) {
+ if (*c->help)
+ printf("%-15s %s\n", c->name, c->help);
+ else
+ printf("\n");
+ }
+ }
+ return 0;
+}
+
+encrypt_cmd(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct encryptlist *c;
+
+ if (argc < 2) {
+ fprintf(stderr,
+ "Need an argument to 'encrypt' command. 'encrypt ?' for help.\n");
+ return 0;
+ }
+
+ c = (struct encryptlist *)
+ genget(argv[1], (char **) EncryptList, sizeof(struct encryptlist));
+ if (c == 0) {
+ fprintf(stderr, "'%s': unknown argument ('encrypt ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ if (Ambiguous(c)) {
+ fprintf(stderr, "'%s': ambiguous argument ('encrypt ?' for help).\n",
+ argv[1]);
+ return 0;
+ }
+ argc -= 2;
+ if (argc < c->minarg || argc > c->maxarg) {
+ if (c->minarg == c->maxarg) {
+ fprintf(stderr, "Need %s%d argument%s ",
+ c->minarg < argc ? "only " : "", c->minarg,
+ c->minarg == 1 ? "" : "s");
+ } else {
+ fprintf(stderr, "Need %s%d-%d arguments ",
+ c->maxarg < argc ? "only " : "", c->minarg, c->maxarg);
+ }
+ fprintf(stderr, "to 'encrypt %s' command. 'encrypt ?' for help.\n",
+ c->name);
+ return 0;
+ }
+ if (c->needconnect && !connected) {
+ if (!(argc && (isprefix(argv[2], "help") || isprefix(argv[2], "?")))) {
+ printf("?Need to be connected first.\n");
+ return 0;
+ }
+ }
+ return ((*c->handler)(argc > 0 ? argv[2] : 0,
+ argc > 1 ? argv[3] : 0,
+ argc > 2 ? argv[4] : 0));
+}
+#endif /* ENCRYPTION */
+
+#if defined(unix) && defined(TN3270)
+ static void
+filestuff(fd)
+ int fd;
+{
+ int res;
+
+#ifdef F_GETOWN
+ setconnmode(0);
+ res = fcntl(fd, F_GETOWN, 0);
+ setcommandmode();
+
+ if (res == -1) {
+ perror("fcntl");
+ return;
+ }
+ printf("\tOwner is %d.\n", res);
+#endif
+
+ setconnmode(0);
+ res = fcntl(fd, F_GETFL, 0);
+ setcommandmode();
+
+ if (res == -1) {
+ perror("fcntl");
+ return;
+ }
+#ifdef notdef
+ printf("\tFlags are 0x%x: %s\n", res, decodeflags(res));
+#endif
+}
+#endif /* defined(unix) && defined(TN3270) */
+
+/*
+ * Print status about the connection.
+ */
+ /*ARGSUSED*/
+ static
+status(argc, argv)
+ int argc;
+ char *argv[];
+{
+ if (connected) {
+ printf("Connected to %s.\n", hostname);
+ if ((argc < 2) || strcmp(argv[1], "notmuch")) {
+ int mode = getconnmode();
+
+ if (my_want_state_is_will(TELOPT_LINEMODE)) {
+ printf("Operating with LINEMODE option\n");
+ printf("%s line editing\n", (mode&MODE_EDIT) ? "Local" : "No");
+ printf("%s catching of signals\n",
+ (mode&MODE_TRAPSIG) ? "Local" : "No");
+ slcstate();
+#ifdef KLUDGELINEMODE
+ } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) {
+ printf("Operating in obsolete linemode\n");
+#endif
+ } else {
+ printf("Operating in single character mode\n");
+ if (localchars)
+ printf("Catching signals locally\n");
+ }
+ printf("%s character echo\n", (mode&MODE_ECHO) ? "Local" : "Remote");
+ if (my_want_state_is_will(TELOPT_LFLOW))
+ printf("%s flow control\n", (mode&MODE_FLOW) ? "Local" : "No");
+#ifdef ENCRYPTION
+ encrypt_display();
+#endif /* ENCRYPTION */
+ }
+ } else {
+ printf("No connection.\n");
+ }
+# if !defined(TN3270)
+ printf("Escape character is '%s'.\n", control(escape));
+ (void) fflush(stdout);
+# else /* !defined(TN3270) */
+ if ((!In3270) && ((argc < 2) || strcmp(argv[1], "notmuch"))) {
+ printf("Escape character is '%s'.\n", control(escape));
+ }
+# if defined(unix)
+ if ((argc >= 2) && !strcmp(argv[1], "everything")) {
+ printf("SIGIO received %d time%s.\n",
+ sigiocount, (sigiocount == 1)? "":"s");
+ if (In3270) {
+ printf("Process ID %d, process group %d.\n",
+ getpid(), getpgrp(getpid()));
+ printf("Terminal input:\n");
+ filestuff(tin);
+ printf("Terminal output:\n");
+ filestuff(tout);
+ printf("Network socket:\n");
+ filestuff(net);
+ }
+ }
+ if (In3270 && transcom) {
+ printf("Transparent mode command is '%s'.\n", transcom);
+ }
+# endif /* defined(unix) */
+ (void) fflush(stdout);
+ if (In3270) {
+ return 0;
+ }
+# endif /* defined(TN3270) */
+ return 1;
+}
+
+#ifdef SIGINFO
+/*
+ * Function that gets called when SIGINFO is received.
+ */
+ayt_status()
+{
+ (void) call(status, "status", "notmuch", 0);
+}
+#endif
+
+unsigned long inet_addr();
+
+ int
+tn(argc, argv)
+ int argc;
+ char *argv[];
+{
+ register struct hostent *host = 0;
+ struct sockaddr_in sin;
+ struct servent *sp = 0;
+ unsigned long temp;
+ extern char *inet_ntoa();
+#if defined(IP_OPTIONS) && defined(IPPROTO_IP)
+ char *srp = 0, *strrchr();
+ unsigned long sourceroute(), srlen;
+#endif
+ char *cmd, *hostp = 0, *portp = 0, *user = 0;
+
+ /* clear the socket address prior to use */
+ memset((char *)&sin, 0, sizeof(sin));
+
+ if (connected) {
+ printf("?Already connected to %s\n", hostname);
+ setuid(getuid());
+ return 0;
+ }
+ if (argc < 2) {
+ (void) strcpy(line, "open ");
+ printf("(to) ");
+ (void) fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin);
+ makeargv();
+ argc = margc;
+ argv = margv;
+ }
+ cmd = *argv;
+ --argc; ++argv;
+ while (argc) {
+ if (strcmp(*argv, "help") == 0 || isprefix(*argv, "?"))
+ goto usage;
+ if (strcmp(*argv, "-l") == 0) {
+ --argc; ++argv;
+ if (argc == 0)
+ goto usage;
+ user = *argv++;
+ --argc;
+ continue;
+ }
+ if (strcmp(*argv, "-a") == 0) {
+ --argc; ++argv;
+ autologin = 1;
+ continue;
+ }
+ if (hostp == 0) {
+ hostp = *argv++;
+ --argc;
+ continue;
+ }
+ if (portp == 0) {
+ portp = *argv++;
+ --argc;
+ continue;
+ }
+ usage:
+ printf("usage: %s [-l user] [-a] host-name [port]\n", cmd);
+ setuid(getuid());
+ return 0;
+ }
+ if (hostp == 0)
+ goto usage;
+
+#if defined(IP_OPTIONS) && defined(IPPROTO_IP)
+ if (hostp[0] == '@' || hostp[0] == '!') {
+ if ((hostname = strrchr(hostp, ':')) == NULL)
+ hostname = strrchr(hostp, '@');
+ hostname++;
+ srp = 0;
+ temp = sourceroute(hostp, &srp, &srlen);
+ if (temp == 0) {
+ herror(srp);
+ setuid(getuid());
+ return 0;
+ } else if (temp == -1) {
+ printf("Bad source route option: %s\n", hostp);
+ setuid(getuid());
+ return 0;
+ } else {
+ sin.sin_addr.s_addr = temp;
+ sin.sin_family = AF_INET;
+ }
+ } else {
+#endif
+ temp = inet_addr(hostp);
+ if (temp != (unsigned long) -1) {
+ sin.sin_addr.s_addr = temp;
+ sin.sin_family = AF_INET;
+ (void) strcpy(_hostname, hostp);
+ hostname = _hostname;
+ } else {
+ host = gethostbyname(hostp);
+ if (host) {
+ sin.sin_family = host->h_addrtype;
+#if defined(h_addr) /* In 4.3, this is a #define */
+ memmove((caddr_t)&sin.sin_addr,
+ host->h_addr_list[0], host->h_length);
+#else /* defined(h_addr) */
+ memmove((caddr_t)&sin.sin_addr, host->h_addr, host->h_length);
+#endif /* defined(h_addr) */
+ strncpy(_hostname, host->h_name, sizeof(_hostname));
+ _hostname[sizeof(_hostname)-1] = '\0';
+ hostname = _hostname;
+ } else {
+ herror(hostp);
+ setuid(getuid());
+ return 0;
+ }
+ }
+#if defined(IP_OPTIONS) && defined(IPPROTO_IP)
+ }
+#endif
+ if (portp) {
+ if (*portp == '-') {
+ portp++;
+ telnetport = 1;
+ } else
+ telnetport = 0;
+ sin.sin_port = atoi(portp);
+ if (sin.sin_port == 0) {
+ sp = getservbyname(portp, "tcp");
+ if (sp)
+ sin.sin_port = sp->s_port;
+ else {
+ printf("%s: bad port number\n", portp);
+ setuid(getuid());
+ return 0;
+ }
+ } else {
+#if !defined(htons)
+ u_short htons P((unsigned short));
+#endif /* !defined(htons) */
+ sin.sin_port = htons(sin.sin_port);
+ }
+ } else {
+ if (sp == 0) {
+ sp = getservbyname("telnet", "tcp");
+ if (sp == 0) {
+ fprintf(stderr, "telnet: tcp/telnet: unknown service\n");
+ setuid(getuid());
+ return 0;
+ }
+ sin.sin_port = sp->s_port;
+ }
+ telnetport = 1;
+ }
+ printf("Trying %s...\n", inet_ntoa(sin.sin_addr));
+ do {
+ net = socket(AF_INET, SOCK_STREAM, 0);
+ setuid(getuid());
+ if (net < 0) {
+ perror("telnet: socket");
+ return 0;
+ }
+#if defined(IP_OPTIONS) && defined(IPPROTO_IP)
+ if (srp && setsockopt(net, IPPROTO_IP, IP_OPTIONS, (char *)srp, srlen) < 0)
+ perror("setsockopt (IP_OPTIONS)");
+#endif
+#if defined(IPPROTO_IP) && defined(IP_TOS)
+ {
+# if defined(HAS_GETTOS)
+ struct tosent *tp;
+ if (tos < 0 && (tp = gettosbyname("telnet", "tcp")))
+ tos = tp->t_tos;
+# endif
+ if (tos < 0)
+ tos = 020; /* Low Delay bit */
+ if (tos
+ && (setsockopt(net, IPPROTO_IP, IP_TOS,
+ (char *)&tos, sizeof(int)) < 0)
+ && (errno != ENOPROTOOPT))
+ perror("telnet: setsockopt (IP_TOS) (ignored)");
+ }
+#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
+
+ if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) {
+ perror("setsockopt (SO_DEBUG)");
+ }
+
+ if (connect(net, (struct sockaddr *)&sin, sizeof (sin)) < 0) {
+#if defined(h_addr) /* In 4.3, this is a #define */
+ if (host && host->h_addr_list[1]) {
+ int oerrno = errno;
+
+ fprintf(stderr, "telnet: connect to address %s: ",
+ inet_ntoa(sin.sin_addr));
+ errno = oerrno;
+ perror((char *)0);
+ host->h_addr_list++;
+ memmove((caddr_t)&sin.sin_addr,
+ host->h_addr_list[0], host->h_length);
+ (void) NetClose(net);
+ continue;
+ }
+#endif /* defined(h_addr) */
+ perror("telnet: Unable to connect to remote host");
+ return 0;
+ }
+ connected++;
+#if defined(AUTHENTICATION) || defined(ENCRYPTION)
+ auth_encrypt_connect(connected);
+#endif /* defined(AUTHENTICATION) || defined(ENCRYPTION) */
+ } while (connected == 0);
+ cmdrc(hostp, hostname);
+ if (autologin && user == NULL) {
+ struct passwd *pw;
+
+ user = getenv("USER");
+ if (user == NULL ||
+ (pw = getpwnam(user)) && pw->pw_uid != getuid()) {
+ if (pw = getpwuid(getuid()))
+ user = pw->pw_name;
+ else
+ user = NULL;
+ }
+ }
+ if (user) {
+ env_define((unsigned char *)"USER", (unsigned char *)user);
+ env_export((unsigned char *)"USER");
+ }
+ (void) call(status, "status", "notmuch", 0);
+ if (setjmp(peerdied) == 0)
+ telnet(user);
+ (void) NetClose(net);
+ ExitString("Connection closed by foreign host.\n",1);
+ /*NOTREACHED*/
+}
+
+#define HELPINDENT (sizeof ("connect"))
+
+static char
+ openhelp[] = "connect to a site",
+ closehelp[] = "close current connection",
+ logouthelp[] = "forcibly logout remote user and close the connection",
+ quithelp[] = "exit telnet",
+ statushelp[] = "print status information",
+ helphelp[] = "print help information",
+ sendhelp[] = "transmit special characters ('send ?' for more)",
+ sethelp[] = "set operating parameters ('set ?' for more)",
+ unsethelp[] = "unset operating parameters ('unset ?' for more)",
+ togglestring[] ="toggle operating parameters ('toggle ?' for more)",
+ slchelp[] = "change state of special charaters ('slc ?' for more)",
+ displayhelp[] = "display operating parameters",
+#if defined(TN3270) && defined(unix)
+ transcomhelp[] = "specify Unix command for transparent mode pipe",
+#endif /* defined(TN3270) && defined(unix) */
+#if defined(AUTHENTICATION)
+ authhelp[] = "turn on (off) authentication ('auth ?' for more)",
+#endif
+#ifdef ENCRYPTION
+ encrypthelp[] = "turn on (off) encryption ('encrypt ?' for more)",
+#endif /* ENCRYPTION */
+#if defined(unix)
+ zhelp[] = "suspend telnet",
+#endif /* defined(unix) */
+ shellhelp[] = "invoke a subshell",
+ envhelp[] = "change environment variables ('environ ?' for more)",
+ modestring[] = "try to enter line or character mode ('mode ?' for more)";
+
+static int help();
+
+static Command cmdtab[] = {
+ { "close", closehelp, bye, 1 },
+ { "logout", logouthelp, logout, 1 },
+ { "display", displayhelp, display, 0 },
+ { "mode", modestring, modecmd, 0 },
+ { "open", openhelp, tn, 0 },
+ { "quit", quithelp, quit, 0 },
+ { "send", sendhelp, sendcmd, 0 },
+ { "set", sethelp, setcmd, 0 },
+ { "unset", unsethelp, unsetcmd, 0 },
+ { "status", statushelp, status, 0 },
+ { "toggle", togglestring, toggle, 0 },
+ { "slc", slchelp, slccmd, 0 },
+#if defined(TN3270) && defined(unix)
+ { "transcom", transcomhelp, settranscom, 0 },
+#endif /* defined(TN3270) && defined(unix) */
+#if defined(AUTHENTICATION)
+ { "auth", authhelp, auth_cmd, 0 },
+#endif
+#ifdef ENCRYPTION
+ { "encrypt", encrypthelp, encrypt_cmd, 0 },
+#endif /* ENCRYPTION */
+#if defined(unix)
+ { "z", zhelp, suspend, 0 },
+#endif /* defined(unix) */
+#if defined(TN3270)
+ { "!", shellhelp, shell, 1 },
+#else
+ { "!", shellhelp, shell, 0 },
+#endif
+ { "environ", envhelp, env_cmd, 0 },
+ { "?", helphelp, help, 0 },
+ 0
+};
+
+static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead";
+static char escapehelp[] = "deprecated command -- use 'set escape' instead";
+
+static Command cmdtab2[] = {
+ { "help", 0, help, 0 },
+ { "escape", escapehelp, setescape, 0 },
+ { "crmod", crmodhelp, togcrmod, 0 },
+ 0
+};
+
+
+/*
+ * Call routine with argc, argv set from args (terminated by 0).
+ */
+
+ /*VARARGS1*/
+ static
+call(va_alist)
+ va_dcl
+{
+ va_list ap;
+ typedef int (*intrtn_t)();
+ intrtn_t routine;
+ char *args[100];
+ int argno = 0;
+
+ va_start(ap);
+ routine = (va_arg(ap, intrtn_t));
+ while ((args[argno++] = va_arg(ap, char *)) != 0) {
+ ;
+ }
+ va_end(ap);
+ return (*routine)(argno-1, args);
+}
+
+
+ static Command *
+getcmd(name)
+ char *name;
+{
+ Command *cm;
+
+ if (cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command)))
+ return cm;
+ return (Command *) genget(name, (char **) cmdtab2, sizeof(Command));
+}
+
+ void
+command(top, tbuf, cnt)
+ int top;
+ char *tbuf;
+ int cnt;
+{
+ register Command *c;
+
+ setcommandmode();
+ if (!top) {
+ putchar('\n');
+#if defined(unix)
+ } else {
+ (void) signal(SIGINT, SIG_DFL);
+ (void) signal(SIGQUIT, SIG_DFL);
+#endif /* defined(unix) */
+ }
+ for (;;) {
+ if (rlogin == _POSIX_VDISABLE)
+ printf("%s> ", prompt);
+ if (tbuf) {
+ register char *cp;
+ cp = line;
+ while (cnt > 0 && (*cp++ = *tbuf++) != '\n')
+ cnt--;
+ tbuf = 0;
+ if (cp == line || *--cp != '\n' || cp == line)
+ goto getline;
+ *cp = '\0';
+ if (rlogin == _POSIX_VDISABLE)
+ printf("%s\n", line);
+ } else {
+ getline:
+ if (rlogin != _POSIX_VDISABLE)
+ printf("%s> ", prompt);
+ if (fgets(line, sizeof(line), stdin) == NULL) {
+ if (feof(stdin) || ferror(stdin)) {
+ (void) quit();
+ /*NOTREACHED*/
+ }
+ break;
+ }
+ }
+ if (line[0] == 0)
+ break;
+ makeargv();
+ if (margv[0] == 0) {
+ break;
+ }
+ c = getcmd(margv[0]);
+ if (Ambiguous(c)) {
+ printf("?Ambiguous command\n");
+ continue;
+ }
+ if (c == 0) {
+ printf("?Invalid command\n");
+ continue;
+ }
+ if (c->needconnect && !connected) {
+ printf("?Need to be connected first.\n");
+ continue;
+ }
+ if ((*c->handler)(margc, margv)) {
+ break;
+ }
+ }
+ if (!top) {
+ if (!connected) {
+ longjmp(toplevel, 1);
+ /*NOTREACHED*/
+ }
+#if defined(TN3270)
+ if (shell_active == 0) {
+ setconnmode(0);
+ }
+#else /* defined(TN3270) */
+ setconnmode(0);
+#endif /* defined(TN3270) */
+ }
+}
+
+/*
+ * Help command.
+ */
+ static
+help(argc, argv)
+ int argc;
+ char *argv[];
+{
+ register Command *c;
+
+ if (argc == 1) {
+ printf("Commands may be abbreviated. Commands are:\n\n");
+ for (c = cmdtab; c->name; c++)
+ if (c->help) {
+ printf("%-*s\t%s\n", HELPINDENT, c->name,
+ c->help);
+ }
+ return 0;
+ }
+ while (--argc > 0) {
+ register char *arg;
+ arg = *++argv;
+ c = getcmd(arg);
+ if (Ambiguous(c))
+ printf("?Ambiguous help command %s\n", arg);
+ else if (c == (Command *)0)
+ printf("?Invalid help command %s\n", arg);
+ else
+ printf("%s\n", c->help);
+ }
+ return 0;
+}
+
+static char *rcname = 0;
+static char rcbuf[128];
+
+cmdrc(m1, m2)
+ char *m1, *m2;
+{
+ register Command *c;
+ FILE *rcfile;
+ int gotmachine = 0;
+ int l1 = strlen(m1);
+ int l2 = strlen(m2);
+ char m1save[64];
+
+ if (skiprc)
+ return;
+
+ strcpy(m1save, m1);
+ m1 = m1save;
+
+ if (rcname == 0) {
+ rcname = getenv("HOME");
+ if (rcname)
+ strcpy(rcbuf, rcname);
+ else
+ rcbuf[0] = '\0';
+ strcat(rcbuf, "/.telnetrc");
+ rcname = rcbuf;
+ }
+
+ if ((rcfile = fopen(rcname, "r")) == 0) {
+ return;
+ }
+
+ for (;;) {
+ if (fgets(line, sizeof(line), rcfile) == NULL)
+ break;
+ if (line[0] == 0)
+ break;
+ if (line[0] == '#')
+ continue;
+ if (gotmachine) {
+ if (!isspace(line[0]))
+ gotmachine = 0;
+ }
+ if (gotmachine == 0) {
+ if (isspace(line[0]))
+ continue;
+ if (strncasecmp(line, m1, l1) == 0)
+ strncpy(line, &line[l1], sizeof(line) - l1);
+ else if (strncasecmp(line, m2, l2) == 0)
+ strncpy(line, &line[l2], sizeof(line) - l2);
+ else if (strncasecmp(line, "DEFAULT", 7) == 0)
+ strncpy(line, &line[7], sizeof(line) - 7);
+ else
+ continue;
+ if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n')
+ continue;
+ gotmachine = 1;
+ }
+ makeargv();
+ if (margv[0] == 0)
+ continue;
+ c = getcmd(margv[0]);
+ if (Ambiguous(c)) {
+ printf("?Ambiguous command: %s\n", margv[0]);
+ continue;
+ }
+ if (c == 0) {
+ printf("?Invalid command: %s\n", margv[0]);
+ continue;
+ }
+ /*
+ * This should never happen...
+ */
+ if (c->needconnect && !connected) {
+ printf("?Need to be connected first for %s.\n", margv[0]);
+ continue;
+ }
+ (*c->handler)(margc, margv);
+ }
+ fclose(rcfile);
+}
+
+#if defined(IP_OPTIONS) && defined(IPPROTO_IP)
+
+/*
+ * Source route is handed in as
+ * [!]@hop1@hop2...[@|:]dst
+ * If the leading ! is present, it is a
+ * strict source route, otherwise it is
+ * assmed to be a loose source route.
+ *
+ * We fill in the source route option as
+ * hop1,hop2,hop3...dest
+ * and return a pointer to hop1, which will
+ * be the address to connect() to.
+ *
+ * Arguments:
+ * arg: pointer to route list to decipher
+ *
+ * cpp: If *cpp is not equal to NULL, this is a
+ * pointer to a pointer to a character array
+ * that should be filled in with the option.
+ *
+ * lenp: pointer to an integer that contains the
+ * length of *cpp if *cpp != NULL.
+ *
+ * Return values:
+ *
+ * Returns the address of the host to connect to. If the
+ * return value is -1, there was a syntax error in the
+ * option, either unknown characters, or too many hosts.
+ * If the return value is 0, one of the hostnames in the
+ * path is unknown, and *cpp is set to point to the bad
+ * hostname.
+ *
+ * *cpp: If *cpp was equal to NULL, it will be filled
+ * in with a pointer to our static area that has
+ * the option filled in. This will be 32bit aligned.
+ *
+ * *lenp: This will be filled in with how long the option
+ * pointed to by *cpp is.
+ *
+ */
+ unsigned long
+sourceroute(arg, cpp, lenp)
+ char *arg;
+ char **cpp;
+ int *lenp;
+{
+ static char lsr[44];
+#ifdef sysV88
+ static IOPTN ipopt;
+#endif
+ char *cp, *cp2, *lsrp, *lsrep;
+ register int tmp;
+ struct in_addr sin_addr;
+ register struct hostent *host = 0;
+ register char c;
+
+ /*
+ * Verify the arguments, and make sure we have
+ * at least 7 bytes for the option.
+ */
+ if (cpp == NULL || lenp == NULL)
+ return((unsigned long)-1);
+ if (*cpp != NULL && *lenp < 7)
+ return((unsigned long)-1);
+ /*
+ * Decide whether we have a buffer passed to us,
+ * or if we need to use our own static buffer.
+ */
+ if (*cpp) {
+ lsrp = *cpp;
+ lsrep = lsrp + *lenp;
+ } else {
+ *cpp = lsrp = lsr;
+ lsrep = lsrp + 44;
+ }
+
+ cp = arg;
+
+ /*
+ * Next, decide whether we have a loose source
+ * route or a strict source route, and fill in
+ * the begining of the option.
+ */
+#ifndef sysV88
+ if (*cp == '!') {
+ cp++;
+ *lsrp++ = IPOPT_SSRR;
+ } else
+ *lsrp++ = IPOPT_LSRR;
+#else
+ if (*cp == '!') {
+ cp++;
+ ipopt.io_type = IPOPT_SSRR;
+ } else
+ ipopt.io_type = IPOPT_LSRR;
+#endif
+
+ if (*cp != '@')
+ return((unsigned long)-1);
+
+#ifndef sysV88
+ lsrp++; /* skip over length, we'll fill it in later */
+ *lsrp++ = 4;
+#endif
+
+ cp++;
+
+ sin_addr.s_addr = 0;
+
+ for (c = 0;;) {
+ if (c == ':')
+ cp2 = 0;
+ else for (cp2 = cp; c = *cp2; cp2++) {
+ if (c == ',') {
+ *cp2++ = '\0';
+ if (*cp2 == '@')
+ cp2++;
+ } else if (c == '@') {
+ *cp2++ = '\0';
+ } else if (c == ':') {
+ *cp2++ = '\0';
+ } else
+ continue;
+ break;
+ }
+ if (!c)
+ cp2 = 0;
+
+ if ((tmp = inet_addr(cp)) != -1) {
+ sin_addr.s_addr = tmp;
+ } else if (host = gethostbyname(cp)) {
+#if defined(h_addr)
+ memmove((caddr_t)&sin_addr,
+ host->h_addr_list[0], host->h_length);
+#else
+ memmove((caddr_t)&sin_addr, host->h_addr, host->h_length);
+#endif
+ } else {
+ *cpp = cp;
+ return(0);
+ }
+ memmove(lsrp, (char *)&sin_addr, 4);
+ lsrp += 4;
+ if (cp2)
+ cp = cp2;
+ else
+ break;
+ /*
+ * Check to make sure there is space for next address
+ */
+ if (lsrp + 4 > lsrep)
+ return((unsigned long)-1);
+ }
+#ifndef sysV88
+ if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) {
+ *cpp = 0;
+ *lenp = 0;
+ return((unsigned long)-1);
+ }
+ *lsrp++ = IPOPT_NOP; /* 32 bit word align it */
+ *lenp = lsrp - *cpp;
+#else
+ ipopt.io_len = lsrp - *cpp;
+ if (ipopt.io_len <= 5) { /* Is 3 better ? */
+ *cpp = 0;
+ *lenp = 0;
+ return((unsigned long)-1);
+ }
+ *lenp = sizeof(ipopt);
+ *cpp = (char *) &ipopt;
+#endif
+ return(sin_addr.s_addr);
+}
+#endif
diff --git a/contrib/telnet/telnet/defines.h b/contrib/telnet/telnet/defines.h
new file mode 100644
index 0000000..0978173
--- /dev/null
+++ b/contrib/telnet/telnet/defines.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)defines.h 8.1 (Berkeley) 6/6/93
+ */
+
+#define settimer(x) clocks.x = clocks.system++
+
+#if !defined(TN3270)
+
+#define SetIn3270()
+
+#endif /* !defined(TN3270) */
+
+#define NETADD(c) { *netoring.supply = c; ring_supplied(&netoring, 1); }
+#define NET2ADD(c1,c2) { NETADD(c1); NETADD(c2); }
+#define NETBYTES() (ring_full_count(&netoring))
+#define NETROOM() (ring_empty_count(&netoring))
+
+#define TTYADD(c) if (!(SYNCHing||flushout)) { \
+ *ttyoring.supply = c; \
+ ring_supplied(&ttyoring, 1); \
+ }
+#define TTYBYTES() (ring_full_count(&ttyoring))
+#define TTYROOM() (ring_empty_count(&ttyoring))
+
+/* Various modes */
+#define MODE_LOCAL_CHARS(m) ((m)&(MODE_EDIT|MODE_TRAPSIG))
+#define MODE_LOCAL_ECHO(m) ((m)&MODE_ECHO)
+#define MODE_COMMAND_LINE(m) ((m)==-1)
+
+#define CONTROL(x) ((x)&0x1f) /* CTRL(x) is not portable */
diff --git a/contrib/telnet/telnet/externs.h b/contrib/telnet/telnet/externs.h
new file mode 100644
index 0000000..83ba07b
--- /dev/null
+++ b/contrib/telnet/telnet/externs.h
@@ -0,0 +1,482 @@
+/*
+ * Copyright (c) 1988, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)externs.h 8.3 (Berkeley) 5/30/95
+ */
+
+#ifndef BSD
+# define BSD 43
+#endif
+
+/*
+ * ucb stdio.h defines BSD as something wierd
+ */
+#if defined(sun) && defined(__svr4__)
+#define BSD 43
+#endif
+
+#ifndef USE_TERMIO
+# if BSD > 43 || defined(SYSV_TERMIO)
+# define USE_TERMIO
+# endif
+#endif
+
+#include <stdio.h>
+#include <setjmp.h>
+#if defined(CRAY) && !defined(NO_BSD_SETJMP)
+#include <bsdsetjmp.h>
+#endif
+#ifndef FILIO_H
+#include <sys/ioctl.h>
+#else
+#include <sys/filio.h>
+#endif
+#ifdef CRAY
+# include <errno.h>
+#endif /* CRAY */
+#ifdef USE_TERMIO
+# ifndef VINTR
+# ifdef SYSV_TERMIO
+# include <sys/termio.h>
+# else
+# include <sys/termios.h>
+# define termio termios
+# endif
+# endif
+#endif
+#if defined(NO_CC_T) || !defined(USE_TERMIO)
+# if !defined(USE_TERMIO)
+typedef char cc_t;
+# else
+typedef unsigned char cc_t;
+# endif
+#endif
+
+#ifndef NO_STRING_H
+#include <string.h>
+#else
+#include <strings.h>
+#endif
+
+#ifndef _POSIX_VDISABLE
+# ifdef sun
+# include <sys/param.h> /* pick up VDISABLE definition, mayby */
+# endif
+# ifdef VDISABLE
+# define _POSIX_VDISABLE VDISABLE
+# else
+# define _POSIX_VDISABLE ((cc_t)'\377')
+# endif
+#endif
+
+#define SUBBUFSIZE 256
+
+#ifndef CRAY
+extern int errno; /* outside this world */
+#endif /* !CRAY */
+
+#if !defined(P)
+# ifdef __STDC__
+# define P(x) x
+# else
+# define P(x) ()
+# endif
+#endif
+
+extern int
+ autologin, /* Autologin enabled */
+ skiprc, /* Don't process the ~/.telnetrc file */
+ eight, /* use eight bit mode (binary in and/or out */
+ flushout, /* flush output */
+ connected, /* Are we connected to the other side? */
+ globalmode, /* Mode tty should be in */
+ In3270, /* Are we in 3270 mode? */
+ telnetport, /* Are we connected to the telnet port? */
+ localflow, /* Flow control handled locally */
+ restartany, /* If flow control, restart output on any character */
+ localchars, /* we recognize interrupt/quit */
+ donelclchars, /* the user has set "localchars" */
+ showoptions,
+ net, /* Network file descriptor */
+ tin, /* Terminal input file descriptor */
+ tout, /* Terminal output file descriptor */
+ crlf, /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */
+ autoflush, /* flush output when interrupting? */
+ autosynch, /* send interrupt characters with SYNCH? */
+ SYNCHing, /* Is the stream in telnet SYNCH mode? */
+ donebinarytoggle, /* the user has put us in binary */
+ dontlecho, /* do we suppress local echoing right now? */
+ crmod,
+ netdata, /* Print out network data flow */
+ prettydump, /* Print "netdata" output in user readable format */
+#if defined(unix)
+#if defined(TN3270)
+ cursesdata, /* Print out curses data flow */
+ apitrace, /* Trace API transactions */
+#endif /* defined(TN3270) */
+ termdata, /* Print out terminal data flow */
+#endif /* defined(unix) */
+ debug; /* Debug level */
+
+extern cc_t escape; /* Escape to command mode */
+extern cc_t rlogin; /* Rlogin mode escape character */
+#ifdef KLUDGELINEMODE
+extern cc_t echoc; /* Toggle local echoing */
+#endif
+
+extern char
+ *prompt; /* Prompt for command. */
+
+extern char
+ doopt[],
+ dont[],
+ will[],
+ wont[],
+ options[], /* All the little options */
+ *hostname; /* Who are we connected to? */
+#ifdef ENCRYPTION
+extern void (*encrypt_output) P((unsigned char *, int));
+extern int (*decrypt_input) P((int));
+#endif /* ENCRYPTION */
+
+/*
+ * We keep track of each side of the option negotiation.
+ */
+
+#define MY_STATE_WILL 0x01
+#define MY_WANT_STATE_WILL 0x02
+#define MY_STATE_DO 0x04
+#define MY_WANT_STATE_DO 0x08
+
+/*
+ * Macros to check the current state of things
+ */
+
+#define my_state_is_do(opt) (options[opt]&MY_STATE_DO)
+#define my_state_is_will(opt) (options[opt]&MY_STATE_WILL)
+#define my_want_state_is_do(opt) (options[opt]&MY_WANT_STATE_DO)
+#define my_want_state_is_will(opt) (options[opt]&MY_WANT_STATE_WILL)
+
+#define my_state_is_dont(opt) (!my_state_is_do(opt))
+#define my_state_is_wont(opt) (!my_state_is_will(opt))
+#define my_want_state_is_dont(opt) (!my_want_state_is_do(opt))
+#define my_want_state_is_wont(opt) (!my_want_state_is_will(opt))
+
+#define set_my_state_do(opt) {options[opt] |= MY_STATE_DO;}
+#define set_my_state_will(opt) {options[opt] |= MY_STATE_WILL;}
+#define set_my_want_state_do(opt) {options[opt] |= MY_WANT_STATE_DO;}
+#define set_my_want_state_will(opt) {options[opt] |= MY_WANT_STATE_WILL;}
+
+#define set_my_state_dont(opt) {options[opt] &= ~MY_STATE_DO;}
+#define set_my_state_wont(opt) {options[opt] &= ~MY_STATE_WILL;}
+#define set_my_want_state_dont(opt) {options[opt] &= ~MY_WANT_STATE_DO;}
+#define set_my_want_state_wont(opt) {options[opt] &= ~MY_WANT_STATE_WILL;}
+
+/*
+ * Make everything symetrical
+ */
+
+#define HIS_STATE_WILL MY_STATE_DO
+#define HIS_WANT_STATE_WILL MY_WANT_STATE_DO
+#define HIS_STATE_DO MY_STATE_WILL
+#define HIS_WANT_STATE_DO MY_WANT_STATE_WILL
+
+#define his_state_is_do my_state_is_will
+#define his_state_is_will my_state_is_do
+#define his_want_state_is_do my_want_state_is_will
+#define his_want_state_is_will my_want_state_is_do
+
+#define his_state_is_dont my_state_is_wont
+#define his_state_is_wont my_state_is_dont
+#define his_want_state_is_dont my_want_state_is_wont
+#define his_want_state_is_wont my_want_state_is_dont
+
+#define set_his_state_do set_my_state_will
+#define set_his_state_will set_my_state_do
+#define set_his_want_state_do set_my_want_state_will
+#define set_his_want_state_will set_my_want_state_do
+
+#define set_his_state_dont set_my_state_wont
+#define set_his_state_wont set_my_state_dont
+#define set_his_want_state_dont set_my_want_state_wont
+#define set_his_want_state_wont set_my_want_state_dont
+
+
+extern FILE
+ *NetTrace; /* Where debugging output goes */
+extern unsigned char
+ NetTraceFile[]; /* Name of file where debugging output goes */
+extern void
+ SetNetTrace P((char *)); /* Function to change where debugging goes */
+
+extern jmp_buf
+ peerdied,
+ toplevel; /* For error conditions. */
+
+extern void
+ command P((int, char *, int)),
+ Dump P((int, unsigned char *, int)),
+ init_3270 P((void)),
+ printoption P((char *, int, int)),
+ printsub P((int, unsigned char *, int)),
+ sendnaws P((void)),
+ setconnmode P((int)),
+ setcommandmode P((void)),
+ setneturg P((void)),
+ sys_telnet_init P((void)),
+ telnet P((char *)),
+ tel_enter_binary P((int)),
+ TerminalFlushOutput P((void)),
+ TerminalNewMode P((int)),
+ TerminalRestoreState P((void)),
+ TerminalSaveState P((void)),
+ tninit P((void)),
+ upcase P((char *)),
+ willoption P((int)),
+ wontoption P((int));
+
+extern void
+ send_do P((int, int)),
+ send_dont P((int, int)),
+ send_will P((int, int)),
+ send_wont P((int, int));
+
+extern void
+ lm_will P((unsigned char *, int)),
+ lm_wont P((unsigned char *, int)),
+ lm_do P((unsigned char *, int)),
+ lm_dont P((unsigned char *, int)),
+ lm_mode P((unsigned char *, int, int));
+
+extern void
+ slc_init P((void)),
+ slcstate P((void)),
+ slc_mode_export P((void)),
+ slc_mode_import P((int)),
+ slc_import P((int)),
+ slc_export P((void)),
+ slc P((unsigned char *, int)),
+ slc_check P((void)),
+ slc_start_reply P((void)),
+ slc_add_reply P((int, int, int)),
+ slc_end_reply P((void));
+extern int
+ slc_update P((void));
+
+extern void
+ env_opt P((unsigned char *, int)),
+ env_opt_start P((void)),
+ env_opt_start_info P((void)),
+ env_opt_add P((unsigned char *)),
+ env_opt_end P((int));
+
+extern unsigned char
+ *env_default P((int, int)),
+ *env_getvalue P((unsigned char *));
+
+extern int
+ get_status P((void)),
+ dosynch P((void));
+
+extern cc_t
+ *tcval P((int));
+
+#ifndef USE_TERMIO
+
+extern struct tchars ntc;
+extern struct ltchars nltc;
+extern struct sgttyb nttyb;
+
+# define termEofChar ntc.t_eofc
+# define termEraseChar nttyb.sg_erase
+# define termFlushChar nltc.t_flushc
+# define termIntChar ntc.t_intrc
+# define termKillChar nttyb.sg_kill
+# define termLiteralNextChar nltc.t_lnextc
+# define termQuitChar ntc.t_quitc
+# define termSuspChar nltc.t_suspc
+# define termRprntChar nltc.t_rprntc
+# define termWerasChar nltc.t_werasc
+# define termStartChar ntc.t_startc
+# define termStopChar ntc.t_stopc
+# define termForw1Char ntc.t_brkc
+extern cc_t termForw2Char;
+extern cc_t termAytChar;
+
+# define termEofCharp (cc_t *)&ntc.t_eofc
+# define termEraseCharp (cc_t *)&nttyb.sg_erase
+# define termFlushCharp (cc_t *)&nltc.t_flushc
+# define termIntCharp (cc_t *)&ntc.t_intrc
+# define termKillCharp (cc_t *)&nttyb.sg_kill
+# define termLiteralNextCharp (cc_t *)&nltc.t_lnextc
+# define termQuitCharp (cc_t *)&ntc.t_quitc
+# define termSuspCharp (cc_t *)&nltc.t_suspc
+# define termRprntCharp (cc_t *)&nltc.t_rprntc
+# define termWerasCharp (cc_t *)&nltc.t_werasc
+# define termStartCharp (cc_t *)&ntc.t_startc
+# define termStopCharp (cc_t *)&ntc.t_stopc
+# define termForw1Charp (cc_t *)&ntc.t_brkc
+# define termForw2Charp (cc_t *)&termForw2Char
+# define termAytCharp (cc_t *)&termAytChar
+
+# else
+
+extern struct termio new_tc;
+
+# define termEofChar new_tc.c_cc[VEOF]
+# define termEraseChar new_tc.c_cc[VERASE]
+# define termIntChar new_tc.c_cc[VINTR]
+# define termKillChar new_tc.c_cc[VKILL]
+# define termQuitChar new_tc.c_cc[VQUIT]
+
+# ifndef VSUSP
+extern cc_t termSuspChar;
+# else
+# define termSuspChar new_tc.c_cc[VSUSP]
+# endif
+# if defined(VFLUSHO) && !defined(VDISCARD)
+# define VDISCARD VFLUSHO
+# endif
+# ifndef VDISCARD
+extern cc_t termFlushChar;
+# else
+# define termFlushChar new_tc.c_cc[VDISCARD]
+# endif
+# ifndef VWERASE
+extern cc_t termWerasChar;
+# else
+# define termWerasChar new_tc.c_cc[VWERASE]
+# endif
+# ifndef VREPRINT
+extern cc_t termRprntChar;
+# else
+# define termRprntChar new_tc.c_cc[VREPRINT]
+# endif
+# ifndef VLNEXT
+extern cc_t termLiteralNextChar;
+# else
+# define termLiteralNextChar new_tc.c_cc[VLNEXT]
+# endif
+# ifndef VSTART
+extern cc_t termStartChar;
+# else
+# define termStartChar new_tc.c_cc[VSTART]
+# endif
+# ifndef VSTOP
+extern cc_t termStopChar;
+# else
+# define termStopChar new_tc.c_cc[VSTOP]
+# endif
+# ifndef VEOL
+extern cc_t termForw1Char;
+# else
+# define termForw1Char new_tc.c_cc[VEOL]
+# endif
+# ifndef VEOL2
+extern cc_t termForw2Char;
+# else
+# define termForw2Char new_tc.c_cc[VEOL]
+# endif
+# ifndef VSTATUS
+extern cc_t termAytChar;
+#else
+# define termAytChar new_tc.c_cc[VSTATUS]
+#endif
+
+# if !defined(CRAY) || defined(__STDC__)
+# define termEofCharp &termEofChar
+# define termEraseCharp &termEraseChar
+# define termIntCharp &termIntChar
+# define termKillCharp &termKillChar
+# define termQuitCharp &termQuitChar
+# define termSuspCharp &termSuspChar
+# define termFlushCharp &termFlushChar
+# define termWerasCharp &termWerasChar
+# define termRprntCharp &termRprntChar
+# define termLiteralNextCharp &termLiteralNextChar
+# define termStartCharp &termStartChar
+# define termStopCharp &termStopChar
+# define termForw1Charp &termForw1Char
+# define termForw2Charp &termForw2Char
+# define termAytCharp &termAytChar
+# else
+ /* Work around a compiler bug */
+# define termEofCharp 0
+# define termEraseCharp 0
+# define termIntCharp 0
+# define termKillCharp 0
+# define termQuitCharp 0
+# define termSuspCharp 0
+# define termFlushCharp 0
+# define termWerasCharp 0
+# define termRprntCharp 0
+# define termLiteralNextCharp 0
+# define termStartCharp 0
+# define termStopCharp 0
+# define termForw1Charp 0
+# define termForw2Charp 0
+# define termAytCharp 0
+# endif
+#endif
+
+
+/* Ring buffer structures which are shared */
+
+extern Ring
+ netoring,
+ netiring,
+ ttyoring,
+ ttyiring;
+
+/* Tn3270 section */
+#if defined(TN3270)
+
+extern int
+ HaveInput, /* Whether an asynchronous I/O indication came in */
+ noasynchtty, /* Don't do signals on I/O (SIGURG, SIGIO) */
+ noasynchnet, /* Don't do signals on I/O (SIGURG, SIGIO) */
+ sigiocount, /* Count of SIGIO receptions */
+ shell_active; /* Subshell is active */
+
+extern char
+ *Ibackp, /* Oldest byte of 3270 data */
+ Ibuf[], /* 3270 buffer */
+ *Ifrontp, /* Where next 3270 byte goes */
+ tline[],
+ *transcom; /* Transparent command */
+
+extern int
+ settranscom P((int, char**));
+
+extern void
+ inputAvailable P((int));
+#endif /* defined(TN3270) */
diff --git a/contrib/telnet/telnet/fdset.h b/contrib/telnet/telnet/fdset.h
new file mode 100644
index 0000000..045bb72
--- /dev/null
+++ b/contrib/telnet/telnet/fdset.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)fdset.h 8.1 (Berkeley) 6/6/93
+ */
+
+/*
+ * The following is defined just in case someone should want to run
+ * this telnet on a 4.2 system.
+ *
+ */
+
+#ifndef FD_SETSIZE
+
+#define FD_SET(n, p) ((p)->fds_bits[0] |= (1<<(n)))
+#define FD_CLR(n, p) ((p)->fds_bits[0] &= ~(1<<(n)))
+#define FD_ISSET(n, p) ((p)->fds_bits[0] & (1<<(n)))
+#define FD_ZERO(p) ((p)->fds_bits[0] = 0)
+
+#endif
diff --git a/contrib/telnet/telnet/general.h b/contrib/telnet/telnet/general.h
new file mode 100644
index 0000000..4efa951
--- /dev/null
+++ b/contrib/telnet/telnet/general.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)general.h 8.1 (Berkeley) 6/6/93
+ */
+
+/*
+ * Some general definitions.
+ */
+
+
+#define numberof(x) (sizeof x/sizeof x[0])
+#define highestof(x) (numberof(x)-1)
+
+#define ClearElement(x) memset((char *)&x, 0, sizeof x)
+#define ClearArray(x) memset((char *)x, 0, sizeof x)
diff --git a/contrib/telnet/telnet/main.c b/contrib/telnet/telnet/main.c
new file mode 100644
index 0000000..6073dbf
--- /dev/null
+++ b/contrib/telnet/telnet/main.c
@@ -0,0 +1,322 @@
+/*
+ * Copyright (c) 1988, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1988, 1990, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include "ring.h"
+#include "externs.h"
+#include "defines.h"
+
+/* These values need to be the same as defined in libtelnet/kerberos5.c */
+/* Either define them in both places, or put in some common header file. */
+#define OPTS_FORWARD_CREDS 0x00000002
+#define OPTS_FORWARDABLE_CREDS 0x00000001
+
+#if 0
+#define FORWARD
+#endif
+
+/*
+ * Initialize variables.
+ */
+ void
+tninit()
+{
+ init_terminal();
+
+ init_network();
+
+ init_telnet();
+
+ init_sys();
+
+#if defined(TN3270)
+ init_3270();
+#endif
+}
+
+ void
+usage()
+{
+ fprintf(stderr, "Usage: %s %s%s%s%s\n",
+ prompt,
+#ifdef AUTHENTICATION
+ "[-8] [-E] [-K] [-L] [-S tos] [-X atype] [-a] [-c] [-d] [-e char]",
+ "\n\t[-k realm] [-l user] [-f/-F] [-n tracefile] ",
+#else
+ "[-8] [-E] [-L] [-S tos] [-a] [-c] [-d] [-e char] [-l user]",
+ "\n\t[-n tracefile]",
+#endif
+#if defined(TN3270) && defined(unix)
+# ifdef AUTHENTICATION
+ "[-noasynch] [-noasynctty]\n\t[-noasyncnet] [-r] [-t transcom] ",
+# else
+ "[-noasynch] [-noasynctty] [-noasyncnet] [-r]\n\t[-t transcom]",
+# endif
+#else
+ "[-r] ",
+#endif
+#ifdef ENCRYPTION
+ "[-x] [host-name [port]]"
+#else /* ENCRYPTION */
+ "[host-name [port]]"
+#endif /* ENCRYPTION */
+ );
+ exit(1);
+}
+
+/*
+ * main. Parse arguments, invoke the protocol or command parser.
+ */
+
+
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ extern char *optarg;
+ extern int optind;
+ int ch;
+ char *user, *strrchr();
+#ifdef FORWARD
+ extern int forward_flags;
+#endif /* FORWARD */
+
+ tninit(); /* Clear out things */
+#if defined(CRAY) && !defined(__STDC__)
+ _setlist_init(); /* Work around compiler bug */
+#endif
+
+ TerminalSaveState();
+
+ if (prompt = strrchr(argv[0], '/'))
+ ++prompt;
+ else
+ prompt = argv[0];
+
+ user = NULL;
+
+ rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE;
+ autologin = -1;
+
+ while ((ch = getopt(argc, argv, "8EKLS:X:acde:fFk:l:n:rt:x")) != EOF) {
+ switch(ch) {
+ case '8':
+ eight = 3; /* binary output and input */
+ break;
+ case 'E':
+ rlogin = escape = _POSIX_VDISABLE;
+ break;
+ case 'K':
+#ifdef AUTHENTICATION
+ autologin = 0;
+#endif
+ break;
+ case 'L':
+ eight |= 2; /* binary output only */
+ break;
+ case 'S':
+ {
+#ifdef HAS_GETTOS
+ extern int tos;
+
+ if ((tos = parsetos(optarg, "tcp")) < 0)
+ fprintf(stderr, "%s%s%s%s\n",
+ prompt, ": Bad TOS argument '",
+ optarg,
+ "; will try to use default TOS");
+#else
+ fprintf(stderr,
+ "%s: Warning: -S ignored, no parsetos() support.\n",
+ prompt);
+#endif
+ }
+ break;
+ case 'X':
+#ifdef AUTHENTICATION
+ auth_disable_name(optarg);
+#endif
+ break;
+ case 'a':
+ autologin = 1;
+ break;
+ case 'c':
+ skiprc = 1;
+ break;
+ case 'd':
+ debug = 1;
+ break;
+ case 'e':
+ set_escape_char(optarg);
+ break;
+ case 'f':
+#if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
+ if (forward_flags & OPTS_FORWARD_CREDS) {
+ fprintf(stderr,
+ "%s: Only one of -f and -F allowed.\n",
+ prompt);
+ usage();
+ }
+ forward_flags |= OPTS_FORWARD_CREDS;
+#else
+ fprintf(stderr,
+ "%s: Warning: -f ignored, no Kerberos V5 support.\n",
+ prompt);
+#endif
+ break;
+ case 'F':
+#if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
+ if (forward_flags & OPTS_FORWARD_CREDS) {
+ fprintf(stderr,
+ "%s: Only one of -f and -F allowed.\n",
+ prompt);
+ usage();
+ }
+ forward_flags |= OPTS_FORWARD_CREDS;
+ forward_flags |= OPTS_FORWARDABLE_CREDS;
+#else
+ fprintf(stderr,
+ "%s: Warning: -F ignored, no Kerberos V5 support.\n",
+ prompt);
+#endif
+ break;
+ case 'k':
+#if defined(AUTHENTICATION) && defined(KRB4)
+ {
+ extern char *dest_realm, dst_realm_buf[], dst_realm_sz;
+ dest_realm = dst_realm_buf;
+ (void)strncpy(dest_realm, optarg, dst_realm_sz);
+ }
+#else
+ fprintf(stderr,
+ "%s: Warning: -k ignored, no Kerberos V4 support.\n",
+ prompt);
+#endif
+ break;
+ case 'l':
+ autologin = 1;
+ user = optarg;
+ break;
+ case 'n':
+#if defined(TN3270) && defined(unix)
+ /* distinguish between "-n oasynch" and "-noasynch" */
+ if (argv[optind - 1][0] == '-' && argv[optind - 1][1]
+ == 'n' && argv[optind - 1][2] == 'o') {
+ if (!strcmp(optarg, "oasynch")) {
+ noasynchtty = 1;
+ noasynchnet = 1;
+ } else if (!strcmp(optarg, "oasynchtty"))
+ noasynchtty = 1;
+ else if (!strcmp(optarg, "oasynchnet"))
+ noasynchnet = 1;
+ } else
+#endif /* defined(TN3270) && defined(unix) */
+ SetNetTrace(optarg);
+ break;
+ case 'r':
+ rlogin = '~';
+ break;
+ case 't':
+#if defined(TN3270) && defined(unix)
+ transcom = tline;
+ (void)strcpy(transcom, optarg);
+#else
+ fprintf(stderr,
+ "%s: Warning: -t ignored, no TN3270 support.\n",
+ prompt);
+#endif
+ break;
+ case 'x':
+#ifdef ENCRYPTION
+ encrypt_auto(1);
+ decrypt_auto(1);
+#else /* ENCRYPTION */
+ fprintf(stderr,
+ "%s: Warning: -x ignored, no ENCRYPT support.\n",
+ prompt);
+#endif /* ENCRYPTION */
+ break;
+ case '?':
+ default:
+ usage();
+ /* NOTREACHED */
+ }
+ }
+ if (autologin == -1)
+ autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1;
+
+ argc -= optind;
+ argv += optind;
+
+ if (argc) {
+ char *args[7], **argp = args;
+
+ if (argc > 2)
+ usage();
+ *argp++ = prompt;
+ if (user) {
+ *argp++ = "-l";
+ *argp++ = user;
+ }
+ *argp++ = argv[0]; /* host */
+ if (argc > 1)
+ *argp++ = argv[1]; /* port */
+ *argp = 0;
+
+ if (setjmp(toplevel) != 0)
+ Exit(0);
+ if (tn(argp - args, args) == 1)
+ return (0);
+ else
+ return (1);
+ }
+ (void)setjmp(toplevel);
+ for (;;) {
+#ifdef TN3270
+ if (shell_active)
+ shell_continue();
+ else
+#endif
+ command(1, 0, 0);
+ }
+}
diff --git a/contrib/telnet/telnet/network.c b/contrib/telnet/telnet/network.c
new file mode 100644
index 0000000..0fe5cee
--- /dev/null
+++ b/contrib/telnet/telnet/network.c
@@ -0,0 +1,177 @@
+/*
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)network.c 8.2 (Berkeley) 12/15/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+
+#include <errno.h>
+
+#include <arpa/telnet.h>
+
+#include "ring.h"
+
+#include "defines.h"
+#include "externs.h"
+#include "fdset.h"
+
+Ring netoring, netiring;
+unsigned char netobuf[2*BUFSIZ], netibuf[BUFSIZ];
+
+/*
+ * Initialize internal network data structures.
+ */
+
+ void
+init_network()
+{
+ if (ring_init(&netoring, netobuf, sizeof netobuf) != 1) {
+ exit(1);
+ }
+ if (ring_init(&netiring, netibuf, sizeof netibuf) != 1) {
+ exit(1);
+ }
+ NetTrace = stdout;
+}
+
+
+/*
+ * Check to see if any out-of-band data exists on a socket (for
+ * Telnet "synch" processing).
+ */
+
+ int
+stilloob()
+{
+ static struct timeval timeout = { 0 };
+ fd_set excepts;
+ int value;
+
+ do {
+ FD_ZERO(&excepts);
+ FD_SET(net, &excepts);
+ value = select(net+1, (fd_set *)0, (fd_set *)0, &excepts, &timeout);
+ } while ((value == -1) && (errno == EINTR));
+
+ if (value < 0) {
+ perror("select");
+ (void) quit();
+ /* NOTREACHED */
+ }
+ if (FD_ISSET(net, &excepts)) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+
+/*
+ * setneturg()
+ *
+ * Sets "neturg" to the current location.
+ */
+
+ void
+setneturg()
+{
+ ring_mark(&netoring);
+}
+
+
+/*
+ * netflush
+ * Send as much data as possible to the network,
+ * handling requests for urgent data.
+ *
+ * The return value indicates whether we did any
+ * useful work.
+ */
+
+
+ int
+netflush()
+{
+ register int n, n1;
+
+#ifdef ENCRYPTION
+ if (encrypt_output)
+ ring_encrypt(&netoring, encrypt_output);
+#endif /* ENCRYPTION */
+ if ((n1 = n = ring_full_consecutive(&netoring)) > 0) {
+ if (!ring_at_mark(&netoring)) {
+ n = send(net, (char *)netoring.consume, n, 0); /* normal write */
+ } else {
+ /*
+ * In 4.2 (and 4.3) systems, there is some question about
+ * what byte in a sendOOB operation is the "OOB" data.
+ * To make ourselves compatible, we only send ONE byte
+ * out of band, the one WE THINK should be OOB (though
+ * we really have more the TCP philosophy of urgent data
+ * rather than the Unix philosophy of OOB data).
+ */
+ n = send(net, (char *)netoring.consume, 1, MSG_OOB);/* URGENT data */
+ }
+ }
+ if (n < 0) {
+ if (errno != ENOBUFS && errno != EWOULDBLOCK) {
+ setcommandmode();
+ perror(hostname);
+ (void)NetClose(net);
+ ring_clear_mark(&netoring);
+ longjmp(peerdied, -1);
+ /*NOTREACHED*/
+ }
+ n = 0;
+ }
+ if (netdata && n) {
+ Dump('>', netoring.consume, n);
+ }
+ if (n) {
+ ring_consumed(&netoring, n);
+ /*
+ * If we sent all, and more to send, then recurse to pick
+ * up the other half.
+ */
+ if ((n1 == n) && ring_full_consecutive(&netoring)) {
+ (void) netflush();
+ }
+ return 1;
+ } else {
+ return 0;
+ }
+}
diff --git a/contrib/telnet/telnet/ring.c b/contrib/telnet/telnet/ring.c
new file mode 100644
index 0000000..37dfda8
--- /dev/null
+++ b/contrib/telnet/telnet/ring.c
@@ -0,0 +1,362 @@
+/*
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)ring.c 8.2 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+/*
+ * This defines a structure for a ring buffer.
+ *
+ * The circular buffer has two parts:
+ *(((
+ * full: [consume, supply)
+ * empty: [supply, consume)
+ *]]]
+ *
+ */
+
+#include <stdio.h>
+#include <errno.h>
+
+#ifdef size_t
+#undef size_t
+#endif
+
+#include <sys/types.h>
+#ifndef FILIO_H
+#include <sys/ioctl.h>
+#endif
+#include <sys/socket.h>
+
+#include "ring.h"
+#include "general.h"
+
+/* Internal macros */
+
+#if !defined(MIN)
+#define MIN(a,b) (((a)<(b))? (a):(b))
+#endif /* !defined(MIN) */
+
+#define ring_subtract(d,a,b) (((a)-(b) >= 0)? \
+ (a)-(b): (((a)-(b))+(d)->size))
+
+#define ring_increment(d,a,c) (((a)+(c) < (d)->top)? \
+ (a)+(c) : (((a)+(c))-(d)->size))
+
+#define ring_decrement(d,a,c) (((a)-(c) >= (d)->bottom)? \
+ (a)-(c) : (((a)-(c))-(d)->size))
+
+
+/*
+ * The following is a clock, used to determine full, empty, etc.
+ *
+ * There is some trickiness here. Since the ring buffers are initialized
+ * to ZERO on allocation, we need to make sure, when interpreting the
+ * clock, that when the times are EQUAL, then the buffer is FULL.
+ */
+static u_long ring_clock = 0;
+
+
+#define ring_empty(d) (((d)->consume == (d)->supply) && \
+ ((d)->consumetime >= (d)->supplytime))
+#define ring_full(d) (((d)->supply == (d)->consume) && \
+ ((d)->supplytime > (d)->consumetime))
+
+
+
+
+
+/* Buffer state transition routines */
+
+ ring_init(ring, buffer, count)
+Ring *ring;
+ unsigned char *buffer;
+ int count;
+{
+ memset((char *)ring, 0, sizeof *ring);
+
+ ring->size = count;
+
+ ring->supply = ring->consume = ring->bottom = buffer;
+
+ ring->top = ring->bottom+ring->size;
+
+#ifdef ENCRYPTION
+ ring->clearto = 0;
+#endif /* ENCRYPTION */
+
+ return 1;
+}
+
+/* Mark routines */
+
+/*
+ * Mark the most recently supplied byte.
+ */
+
+ void
+ring_mark(ring)
+ Ring *ring;
+{
+ ring->mark = ring_decrement(ring, ring->supply, 1);
+}
+
+/*
+ * Is the ring pointing to the mark?
+ */
+
+ int
+ring_at_mark(ring)
+ Ring *ring;
+{
+ if (ring->mark == ring->consume) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+/*
+ * Clear any mark set on the ring.
+ */
+
+ void
+ring_clear_mark(ring)
+ Ring *ring;
+{
+ ring->mark = 0;
+}
+
+/*
+ * Add characters from current segment to ring buffer.
+ */
+ void
+ring_supplied(ring, count)
+ Ring *ring;
+ int count;
+{
+ ring->supply = ring_increment(ring, ring->supply, count);
+ ring->supplytime = ++ring_clock;
+}
+
+/*
+ * We have just consumed "c" bytes.
+ */
+ void
+ring_consumed(ring, count)
+ Ring *ring;
+ int count;
+{
+ if (count == 0) /* don't update anything */
+ return;
+
+ if (ring->mark &&
+ (ring_subtract(ring, ring->mark, ring->consume) < count)) {
+ ring->mark = 0;
+ }
+#ifdef ENCRYPTION
+ if (ring->consume < ring->clearto &&
+ ring->clearto <= ring->consume + count)
+ ring->clearto = 0;
+ else if (ring->consume + count > ring->top &&
+ ring->bottom <= ring->clearto &&
+ ring->bottom + ((ring->consume + count) - ring->top))
+ ring->clearto = 0;
+#endif /* ENCRYPTION */
+ ring->consume = ring_increment(ring, ring->consume, count);
+ ring->consumetime = ++ring_clock;
+ /*
+ * Try to encourage "ring_empty_consecutive()" to be large.
+ */
+ if (ring_empty(ring)) {
+ ring->consume = ring->supply = ring->bottom;
+ }
+}
+
+
+
+/* Buffer state query routines */
+
+
+/* Number of bytes that may be supplied */
+ int
+ring_empty_count(ring)
+ Ring *ring;
+{
+ if (ring_empty(ring)) { /* if empty */
+ return ring->size;
+ } else {
+ return ring_subtract(ring, ring->consume, ring->supply);
+ }
+}
+
+/* number of CONSECUTIVE bytes that may be supplied */
+ int
+ring_empty_consecutive(ring)
+ Ring *ring;
+{
+ if ((ring->consume < ring->supply) || ring_empty(ring)) {
+ /*
+ * if consume is "below" supply, or empty, then
+ * return distance to the top
+ */
+ return ring_subtract(ring, ring->top, ring->supply);
+ } else {
+ /*
+ * else, return what we may.
+ */
+ return ring_subtract(ring, ring->consume, ring->supply);
+ }
+}
+
+/* Return the number of bytes that are available for consuming
+ * (but don't give more than enough to get to cross over set mark)
+ */
+
+ int
+ring_full_count(ring)
+ Ring *ring;
+{
+ if ((ring->mark == 0) || (ring->mark == ring->consume)) {
+ if (ring_full(ring)) {
+ return ring->size; /* nothing consumed, but full */
+ } else {
+ return ring_subtract(ring, ring->supply, ring->consume);
+ }
+ } else {
+ return ring_subtract(ring, ring->mark, ring->consume);
+ }
+}
+
+/*
+ * Return the number of CONSECUTIVE bytes available for consuming.
+ * However, don't return more than enough to cross over set mark.
+ */
+ int
+ring_full_consecutive(ring)
+ Ring *ring;
+{
+ if ((ring->mark == 0) || (ring->mark == ring->consume)) {
+ if ((ring->supply < ring->consume) || ring_full(ring)) {
+ return ring_subtract(ring, ring->top, ring->consume);
+ } else {
+ return ring_subtract(ring, ring->supply, ring->consume);
+ }
+ } else {
+ if (ring->mark < ring->consume) {
+ return ring_subtract(ring, ring->top, ring->consume);
+ } else { /* Else, distance to mark */
+ return ring_subtract(ring, ring->mark, ring->consume);
+ }
+ }
+}
+
+/*
+ * Move data into the "supply" portion of of the ring buffer.
+ */
+ void
+ring_supply_data(ring, buffer, count)
+ Ring *ring;
+ unsigned char *buffer;
+ int count;
+{
+ int i;
+
+ while (count) {
+ i = MIN(count, ring_empty_consecutive(ring));
+ memmove(ring->supply, buffer, i);
+ ring_supplied(ring, i);
+ count -= i;
+ buffer += i;
+ }
+}
+
+#ifdef notdef
+
+/*
+ * Move data from the "consume" portion of the ring buffer
+ */
+ void
+ring_consume_data(ring, buffer, count)
+ Ring *ring;
+ unsigned char *buffer;
+ int count;
+{
+ int i;
+
+ while (count) {
+ i = MIN(count, ring_full_consecutive(ring));
+ memmove(buffer, ring->consume, i);
+ ring_consumed(ring, i);
+ count -= i;
+ buffer += i;
+ }
+}
+#endif
+
+#ifdef ENCRYPTION
+ void
+ring_encrypt(ring, encryptor)
+ Ring *ring;
+ void (*encryptor)();
+{
+ unsigned char *s, *c;
+
+ if (ring_empty(ring) || ring->clearto == ring->supply)
+ return;
+
+ if (!(c = ring->clearto))
+ c = ring->consume;
+
+ s = ring->supply;
+
+ if (s <= c) {
+ (*encryptor)(c, ring->top - c);
+ (*encryptor)(ring->bottom, s - ring->bottom);
+ } else
+ (*encryptor)(c, s - c);
+
+ ring->clearto = ring->supply;
+}
+
+ void
+ring_clearto(ring)
+ Ring *ring;
+{
+ if (!ring_empty(ring))
+ ring->clearto = ring->supply;
+ else
+ ring->clearto = 0;
+}
+#endif /* ENCRYPTION */
diff --git a/contrib/telnet/telnet/ring.h b/contrib/telnet/telnet/ring.h
new file mode 100644
index 0000000..2a36781
--- /dev/null
+++ b/contrib/telnet/telnet/ring.h
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)ring.h 8.1 (Berkeley) 6/6/93
+ */
+
+#if defined(P)
+# undef P
+#endif
+
+#if defined(__STDC__) || defined(LINT_ARGS)
+# define P(x) x
+#else
+# define P(x) ()
+#endif
+
+/*
+ * This defines a structure for a ring buffer.
+ *
+ * The circular buffer has two parts:
+ *(((
+ * full: [consume, supply)
+ * empty: [supply, consume)
+ *]]]
+ *
+ */
+typedef struct {
+ unsigned char *consume, /* where data comes out of */
+ *supply, /* where data comes in to */
+ *bottom, /* lowest address in buffer */
+ *top, /* highest address+1 in buffer */
+ *mark; /* marker (user defined) */
+#ifdef ENCRYPTION
+ unsigned char *clearto; /* Data to this point is clear text */
+ unsigned char *encryyptedto; /* Data is encrypted to here */
+#endif /* ENCRYPTION */
+ int size; /* size in bytes of buffer */
+ u_long consumetime, /* help us keep straight full, empty, etc. */
+ supplytime;
+} Ring;
+
+/* Here are some functions and macros to deal with the ring buffer */
+
+/* Initialization routine */
+extern int
+ ring_init P((Ring *ring, unsigned char *buffer, int count));
+
+/* Data movement routines */
+extern void
+ ring_supply_data P((Ring *ring, unsigned char *buffer, int count));
+#ifdef notdef
+extern void
+ ring_consume_data P((Ring *ring, unsigned char *buffer, int count));
+#endif
+
+/* Buffer state transition routines */
+extern void
+ ring_supplied P((Ring *ring, int count)),
+ ring_consumed P((Ring *ring, int count));
+
+/* Buffer state query routines */
+extern int
+ ring_empty_count P((Ring *ring)),
+ ring_empty_consecutive P((Ring *ring)),
+ ring_full_count P((Ring *ring)),
+ ring_full_consecutive P((Ring *ring));
+
+#ifdef ENCRYPTION
+extern void
+ ring_encrypt P((Ring *ring, void (*func)())),
+ ring_clearto P((Ring *ring));
+#endif /* ENCRYPTION */
+
+extern void
+ ring_clear_mark(),
+ ring_mark();
diff --git a/contrib/telnet/telnet/sys_bsd.c b/contrib/telnet/telnet/sys_bsd.c
new file mode 100644
index 0000000..f2769ac
--- /dev/null
+++ b/contrib/telnet/telnet/sys_bsd.c
@@ -0,0 +1,1220 @@
+/*
+ * Copyright (c) 1988, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)sys_bsd.c 8.4 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+/*
+ * The following routines try to encapsulate what is system dependent
+ * (at least between 4.x and dos) which is used in telnet.c.
+ */
+
+
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <signal.h>
+#include <errno.h>
+#include <arpa/telnet.h>
+
+#include "ring.h"
+
+#include "fdset.h"
+
+#include "defines.h"
+#include "externs.h"
+#include "types.h"
+
+#if defined(CRAY) || (defined(USE_TERMIO) && !defined(SYSV_TERMIO))
+#define SIG_FUNC_RET void
+#else
+#define SIG_FUNC_RET int
+#endif
+
+#ifdef SIGINFO
+extern SIG_FUNC_RET ayt_status();
+#endif
+
+int
+ tout, /* Output file descriptor */
+ tin, /* Input file descriptor */
+ net;
+
+#ifndef USE_TERMIO
+struct tchars otc = { 0 }, ntc = { 0 };
+struct ltchars oltc = { 0 }, nltc = { 0 };
+struct sgttyb ottyb = { 0 }, nttyb = { 0 };
+int olmode = 0;
+# define cfgetispeed(ptr) (ptr)->sg_ispeed
+# define cfgetospeed(ptr) (ptr)->sg_ospeed
+# define old_tc ottyb
+
+#else /* USE_TERMIO */
+struct termio old_tc = { 0 };
+extern struct termio new_tc;
+
+# ifndef TCSANOW
+# ifdef TCSETS
+# define TCSANOW TCSETS
+# define TCSADRAIN TCSETSW
+# define tcgetattr(f, t) ioctl(f, TCGETS, (char *)t)
+# else
+# ifdef TCSETA
+# define TCSANOW TCSETA
+# define TCSADRAIN TCSETAW
+# define tcgetattr(f, t) ioctl(f, TCGETA, (char *)t)
+# else
+# define TCSANOW TIOCSETA
+# define TCSADRAIN TIOCSETAW
+# define tcgetattr(f, t) ioctl(f, TIOCGETA, (char *)t)
+# endif
+# endif
+# define tcsetattr(f, a, t) ioctl(f, a, (char *)t)
+# define cfgetospeed(ptr) ((ptr)->c_cflag&CBAUD)
+# ifdef CIBAUD
+# define cfgetispeed(ptr) (((ptr)->c_cflag&CIBAUD) >> IBSHIFT)
+# else
+# define cfgetispeed(ptr) cfgetospeed(ptr)
+# endif
+# endif /* TCSANOW */
+# ifdef sysV88
+# define TIOCFLUSH TC_PX_DRAIN
+# endif
+#endif /* USE_TERMIO */
+
+static fd_set ibits, obits, xbits;
+
+
+ void
+init_sys()
+{
+ tout = fileno(stdout);
+ tin = fileno(stdin);
+ FD_ZERO(&ibits);
+ FD_ZERO(&obits);
+ FD_ZERO(&xbits);
+
+ errno = 0;
+}
+
+
+ int
+TerminalWrite(buf, n)
+ char *buf;
+ int n;
+{
+ return write(tout, buf, n);
+}
+
+ int
+TerminalRead(buf, n)
+ unsigned char *buf;
+ int n;
+{
+ return read(tin, buf, n);
+}
+
+/*
+ *
+ */
+
+ int
+TerminalAutoFlush()
+{
+#if defined(LNOFLSH)
+ int flush;
+
+ ioctl(0, TIOCLGET, (char *)&flush);
+ return !(flush&LNOFLSH); /* if LNOFLSH, no autoflush */
+#else /* LNOFLSH */
+ return 1;
+#endif /* LNOFLSH */
+}
+
+#ifdef KLUDGELINEMODE
+extern int kludgelinemode;
+#endif
+/*
+ * TerminalSpecialChars()
+ *
+ * Look at an input character to see if it is a special character
+ * and decide what to do.
+ *
+ * Output:
+ *
+ * 0 Don't add this character.
+ * 1 Do add this character
+ */
+
+extern void xmitAO(), xmitEL(), xmitEC(), intp(), sendbrk();
+
+ int
+TerminalSpecialChars(c)
+ int c;
+{
+ if (c == termIntChar) {
+ intp();
+ return 0;
+ } else if (c == termQuitChar) {
+#ifdef KLUDGELINEMODE
+ if (kludgelinemode)
+ sendbrk();
+ else
+#endif
+ sendabort();
+ return 0;
+ } else if (c == termEofChar) {
+ if (my_want_state_is_will(TELOPT_LINEMODE)) {
+ sendeof();
+ return 0;
+ }
+ return 1;
+ } else if (c == termSuspChar) {
+ sendsusp();
+ return(0);
+ } else if (c == termFlushChar) {
+ xmitAO(); /* Transmit Abort Output */
+ return 0;
+ } else if (!MODE_LOCAL_CHARS(globalmode)) {
+ if (c == termKillChar) {
+ xmitEL();
+ return 0;
+ } else if (c == termEraseChar) {
+ xmitEC(); /* Transmit Erase Character */
+ return 0;
+ }
+ }
+ return 1;
+}
+
+
+/*
+ * Flush output to the terminal
+ */
+
+ void
+TerminalFlushOutput()
+{
+#ifdef TIOCFLUSH
+ (void) ioctl(fileno(stdout), TIOCFLUSH, (char *) 0);
+#else
+ (void) ioctl(fileno(stdout), TCFLSH, (char *) 0);
+#endif
+}
+
+ void
+TerminalSaveState()
+{
+#ifndef USE_TERMIO
+ ioctl(0, TIOCGETP, (char *)&ottyb);
+ ioctl(0, TIOCGETC, (char *)&otc);
+ ioctl(0, TIOCGLTC, (char *)&oltc);
+ ioctl(0, TIOCLGET, (char *)&olmode);
+
+ ntc = otc;
+ nltc = oltc;
+ nttyb = ottyb;
+
+#else /* USE_TERMIO */
+ tcgetattr(0, &old_tc);
+
+ new_tc = old_tc;
+
+#ifndef VDISCARD
+ termFlushChar = CONTROL('O');
+#endif
+#ifndef VWERASE
+ termWerasChar = CONTROL('W');
+#endif
+#ifndef VREPRINT
+ termRprntChar = CONTROL('R');
+#endif
+#ifndef VLNEXT
+ termLiteralNextChar = CONTROL('V');
+#endif
+#ifndef VSTART
+ termStartChar = CONTROL('Q');
+#endif
+#ifndef VSTOP
+ termStopChar = CONTROL('S');
+#endif
+#ifndef VSTATUS
+ termAytChar = CONTROL('T');
+#endif
+#endif /* USE_TERMIO */
+}
+
+ cc_t *
+tcval(func)
+ register int func;
+{
+ switch(func) {
+ case SLC_IP: return(&termIntChar);
+ case SLC_ABORT: return(&termQuitChar);
+ case SLC_EOF: return(&termEofChar);
+ case SLC_EC: return(&termEraseChar);
+ case SLC_EL: return(&termKillChar);
+ case SLC_XON: return(&termStartChar);
+ case SLC_XOFF: return(&termStopChar);
+ case SLC_FORW1: return(&termForw1Char);
+#ifdef USE_TERMIO
+ case SLC_FORW2: return(&termForw2Char);
+# ifdef VDISCARD
+ case SLC_AO: return(&termFlushChar);
+# endif
+# ifdef VSUSP
+ case SLC_SUSP: return(&termSuspChar);
+# endif
+# ifdef VWERASE
+ case SLC_EW: return(&termWerasChar);
+# endif
+# ifdef VREPRINT
+ case SLC_RP: return(&termRprntChar);
+# endif
+# ifdef VLNEXT
+ case SLC_LNEXT: return(&termLiteralNextChar);
+# endif
+# ifdef VSTATUS
+ case SLC_AYT: return(&termAytChar);
+# endif
+#endif
+
+ case SLC_SYNCH:
+ case SLC_BRK:
+ case SLC_EOR:
+ default:
+ return((cc_t *)0);
+ }
+}
+
+ void
+TerminalDefaultChars()
+{
+#ifndef USE_TERMIO
+ ntc = otc;
+ nltc = oltc;
+ nttyb.sg_kill = ottyb.sg_kill;
+ nttyb.sg_erase = ottyb.sg_erase;
+#else /* USE_TERMIO */
+ memmove(new_tc.c_cc, old_tc.c_cc, sizeof(old_tc.c_cc));
+# ifndef VDISCARD
+ termFlushChar = CONTROL('O');
+# endif
+# ifndef VWERASE
+ termWerasChar = CONTROL('W');
+# endif
+# ifndef VREPRINT
+ termRprntChar = CONTROL('R');
+# endif
+# ifndef VLNEXT
+ termLiteralNextChar = CONTROL('V');
+# endif
+# ifndef VSTART
+ termStartChar = CONTROL('Q');
+# endif
+# ifndef VSTOP
+ termStopChar = CONTROL('S');
+# endif
+# ifndef VSTATUS
+ termAytChar = CONTROL('T');
+# endif
+#endif /* USE_TERMIO */
+}
+
+#ifdef notdef
+void
+TerminalRestoreState()
+{
+}
+#endif
+
+/*
+ * TerminalNewMode - set up terminal to a specific mode.
+ * MODE_ECHO: do local terminal echo
+ * MODE_FLOW: do local flow control
+ * MODE_TRAPSIG: do local mapping to TELNET IAC sequences
+ * MODE_EDIT: do local line editing
+ *
+ * Command mode:
+ * MODE_ECHO|MODE_EDIT|MODE_FLOW|MODE_TRAPSIG
+ * local echo
+ * local editing
+ * local xon/xoff
+ * local signal mapping
+ *
+ * Linemode:
+ * local/no editing
+ * Both Linemode and Single Character mode:
+ * local/remote echo
+ * local/no xon/xoff
+ * local/no signal mapping
+ */
+
+
+ void
+TerminalNewMode(f)
+ register int f;
+{
+ static int prevmode = 0;
+#ifndef USE_TERMIO
+ struct tchars tc;
+ struct ltchars ltc;
+ struct sgttyb sb;
+ int lmode;
+#else /* USE_TERMIO */
+ struct termio tmp_tc;
+#endif /* USE_TERMIO */
+ int onoff;
+ int old;
+ cc_t esc;
+
+ globalmode = f&~MODE_FORCE;
+ if (prevmode == f)
+ return;
+
+ /*
+ * Write any outstanding data before switching modes
+ * ttyflush() returns 0 only when there is no more data
+ * left to write out, it returns -1 if it couldn't do
+ * anything at all, otherwise it returns 1 + the number
+ * of characters left to write.
+#ifndef USE_TERMIO
+ * We would really like ask the kernel to wait for the output
+ * to drain, like we can do with the TCSADRAIN, but we don't have
+ * that option. The only ioctl that waits for the output to
+ * drain, TIOCSETP, also flushes the input queue, which is NOT
+ * what we want (TIOCSETP is like TCSADFLUSH).
+#endif
+ */
+ old = ttyflush(SYNCHing|flushout);
+ if (old < 0 || old > 1) {
+#ifdef USE_TERMIO
+ tcgetattr(tin, &tmp_tc);
+#endif /* USE_TERMIO */
+ do {
+ /*
+ * Wait for data to drain, then flush again.
+ */
+#ifdef USE_TERMIO
+ tcsetattr(tin, TCSADRAIN, &tmp_tc);
+#endif /* USE_TERMIO */
+ old = ttyflush(SYNCHing|flushout);
+ } while (old < 0 || old > 1);
+ }
+
+ old = prevmode;
+ prevmode = f&~MODE_FORCE;
+#ifndef USE_TERMIO
+ sb = nttyb;
+ tc = ntc;
+ ltc = nltc;
+ lmode = olmode;
+#else
+ tmp_tc = new_tc;
+#endif
+
+ if (f&MODE_ECHO) {
+#ifndef USE_TERMIO
+ sb.sg_flags |= ECHO;
+#else
+ tmp_tc.c_lflag |= ECHO;
+ tmp_tc.c_oflag |= ONLCR;
+ if (crlf)
+ tmp_tc.c_iflag |= ICRNL;
+#endif
+ } else {
+#ifndef USE_TERMIO
+ sb.sg_flags &= ~ECHO;
+#else
+ tmp_tc.c_lflag &= ~ECHO;
+ tmp_tc.c_oflag &= ~ONLCR;
+# ifdef notdef
+ if (crlf)
+ tmp_tc.c_iflag &= ~ICRNL;
+# endif
+#endif
+ }
+
+ if ((f&MODE_FLOW) == 0) {
+#ifndef USE_TERMIO
+ tc.t_startc = _POSIX_VDISABLE;
+ tc.t_stopc = _POSIX_VDISABLE;
+#else
+ tmp_tc.c_iflag &= ~(IXOFF|IXON); /* Leave the IXANY bit alone */
+ } else {
+ if (restartany < 0) {
+ tmp_tc.c_iflag |= IXOFF|IXON; /* Leave the IXANY bit alone */
+ } else if (restartany > 0) {
+ tmp_tc.c_iflag |= IXOFF|IXON|IXANY;
+ } else {
+ tmp_tc.c_iflag |= IXOFF|IXON;
+ tmp_tc.c_iflag &= ~IXANY;
+ }
+#endif
+ }
+
+ if ((f&MODE_TRAPSIG) == 0) {
+#ifndef USE_TERMIO
+ tc.t_intrc = _POSIX_VDISABLE;
+ tc.t_quitc = _POSIX_VDISABLE;
+ tc.t_eofc = _POSIX_VDISABLE;
+ ltc.t_suspc = _POSIX_VDISABLE;
+ ltc.t_dsuspc = _POSIX_VDISABLE;
+#else
+ tmp_tc.c_lflag &= ~ISIG;
+#endif
+ localchars = 0;
+ } else {
+#ifdef USE_TERMIO
+ tmp_tc.c_lflag |= ISIG;
+#endif
+ localchars = 1;
+ }
+
+ if (f&MODE_EDIT) {
+#ifndef USE_TERMIO
+ sb.sg_flags &= ~CBREAK;
+ sb.sg_flags |= CRMOD;
+#else
+ tmp_tc.c_lflag |= ICANON;
+#endif
+ } else {
+#ifndef USE_TERMIO
+ sb.sg_flags |= CBREAK;
+ if (f&MODE_ECHO)
+ sb.sg_flags |= CRMOD;
+ else
+ sb.sg_flags &= ~CRMOD;
+#else
+ tmp_tc.c_lflag &= ~ICANON;
+ tmp_tc.c_iflag &= ~ICRNL;
+ tmp_tc.c_cc[VMIN] = 1;
+ tmp_tc.c_cc[VTIME] = 0;
+#endif
+ }
+
+ if ((f&(MODE_EDIT|MODE_TRAPSIG)) == 0) {
+#ifndef USE_TERMIO
+ ltc.t_lnextc = _POSIX_VDISABLE;
+#else
+# ifdef VLNEXT
+ tmp_tc.c_cc[VLNEXT] = (cc_t)(_POSIX_VDISABLE);
+# endif
+#endif
+ }
+
+ if (f&MODE_SOFT_TAB) {
+#ifndef USE_TERMIO
+ sb.sg_flags |= XTABS;
+#else
+# ifdef OXTABS
+ tmp_tc.c_oflag |= OXTABS;
+# endif
+# ifdef TABDLY
+ tmp_tc.c_oflag &= ~TABDLY;
+ tmp_tc.c_oflag |= TAB3;
+# endif
+#endif
+ } else {
+#ifndef USE_TERMIO
+ sb.sg_flags &= ~XTABS;
+#else
+# ifdef OXTABS
+ tmp_tc.c_oflag &= ~OXTABS;
+# endif
+# ifdef TABDLY
+ tmp_tc.c_oflag &= ~TABDLY;
+# endif
+#endif
+ }
+
+ if (f&MODE_LIT_ECHO) {
+#ifndef USE_TERMIO
+ lmode &= ~LCTLECH;
+#else
+# ifdef ECHOCTL
+ tmp_tc.c_lflag &= ~ECHOCTL;
+# endif
+#endif
+ } else {
+#ifndef USE_TERMIO
+ lmode |= LCTLECH;
+#else
+# ifdef ECHOCTL
+ tmp_tc.c_lflag |= ECHOCTL;
+# endif
+#endif
+ }
+
+ if (f == -1) {
+ onoff = 0;
+ } else {
+#ifndef USE_TERMIO
+ if (f & MODE_OUTBIN)
+ lmode |= LLITOUT;
+ else
+ lmode &= ~LLITOUT;
+
+ if (f & MODE_INBIN)
+ lmode |= LPASS8;
+ else
+ lmode &= ~LPASS8;
+#else
+ if (f & MODE_INBIN)
+ tmp_tc.c_iflag &= ~ISTRIP;
+ else
+ tmp_tc.c_iflag |= ISTRIP;
+ if (f & MODE_OUTBIN) {
+ tmp_tc.c_cflag &= ~(CSIZE|PARENB);
+ tmp_tc.c_cflag |= CS8;
+ tmp_tc.c_oflag &= ~OPOST;
+ } else {
+ tmp_tc.c_cflag &= ~(CSIZE|PARENB);
+ tmp_tc.c_cflag |= old_tc.c_cflag & (CSIZE|PARENB);
+ tmp_tc.c_oflag |= OPOST;
+ }
+#endif
+ onoff = 1;
+ }
+
+ if (f != -1) {
+#ifdef SIGTSTP
+ SIG_FUNC_RET susp();
+#endif /* SIGTSTP */
+#ifdef SIGINFO
+ SIG_FUNC_RET ayt();
+#endif
+
+#ifdef SIGTSTP
+ (void) signal(SIGTSTP, susp);
+#endif /* SIGTSTP */
+#ifdef SIGINFO
+ (void) signal(SIGINFO, ayt);
+#endif
+#if defined(USE_TERMIO) && defined(NOKERNINFO)
+ tmp_tc.c_lflag |= NOKERNINFO;
+#endif
+ /*
+ * We don't want to process ^Y here. It's just another
+ * character that we'll pass on to the back end. It has
+ * to process it because it will be processed when the
+ * user attempts to read it, not when we send it.
+ */
+#ifndef USE_TERMIO
+ ltc.t_dsuspc = _POSIX_VDISABLE;
+#else
+# ifdef VDSUSP
+ tmp_tc.c_cc[VDSUSP] = (cc_t)(_POSIX_VDISABLE);
+# endif
+#endif
+#ifdef USE_TERMIO
+ /*
+ * If the VEOL character is already set, then use VEOL2,
+ * otherwise use VEOL.
+ */
+ esc = (rlogin != _POSIX_VDISABLE) ? rlogin : escape;
+ if ((tmp_tc.c_cc[VEOL] != esc)
+# ifdef VEOL2
+ && (tmp_tc.c_cc[VEOL2] != esc)
+# endif
+ ) {
+ if (tmp_tc.c_cc[VEOL] == (cc_t)(_POSIX_VDISABLE))
+ tmp_tc.c_cc[VEOL] = esc;
+# ifdef VEOL2
+ else if (tmp_tc.c_cc[VEOL2] == (cc_t)(_POSIX_VDISABLE))
+ tmp_tc.c_cc[VEOL2] = esc;
+# endif
+ }
+#else
+ if (tc.t_brkc == (cc_t)(_POSIX_VDISABLE))
+ tc.t_brkc = esc;
+#endif
+ } else {
+#ifdef SIGINFO
+ SIG_FUNC_RET ayt_status();
+
+ (void) signal(SIGINFO, ayt_status);
+#endif
+#ifdef SIGTSTP
+ (void) signal(SIGTSTP, SIG_DFL);
+# ifndef SOLARIS
+ (void) sigsetmask(sigblock(0) & ~(1<<(SIGTSTP-1)));
+# else SOLARIS
+ (void) sigrelse(SIGTSTP);
+# endif SOLARIS
+#endif /* SIGTSTP */
+#ifndef USE_TERMIO
+ ltc = oltc;
+ tc = otc;
+ sb = ottyb;
+ lmode = olmode;
+#else
+ tmp_tc = old_tc;
+#endif
+ }
+#ifndef USE_TERMIO
+ ioctl(tin, TIOCLSET, (char *)&lmode);
+ ioctl(tin, TIOCSLTC, (char *)&ltc);
+ ioctl(tin, TIOCSETC, (char *)&tc);
+ ioctl(tin, TIOCSETN, (char *)&sb);
+#else
+ if (tcsetattr(tin, TCSADRAIN, &tmp_tc) < 0)
+ tcsetattr(tin, TCSANOW, &tmp_tc);
+#endif
+
+#if (!defined(TN3270)) || ((!defined(NOT43)) || defined(PUTCHAR))
+# if !defined(sysV88)
+ ioctl(tin, FIONBIO, (char *)&onoff);
+ ioctl(tout, FIONBIO, (char *)&onoff);
+# endif
+#endif /* (!defined(TN3270)) || ((!defined(NOT43)) || defined(PUTCHAR)) */
+#if defined(TN3270)
+ if (noasynchtty == 0) {
+ ioctl(tin, FIOASYNC, (char *)&onoff);
+ }
+#endif /* defined(TN3270) */
+
+}
+
+/*
+ * Try to guess whether speeds are "encoded" (4.2BSD) or just numeric (4.4BSD).
+ */
+#if B4800 != 4800
+#define DECODE_BAUD
+#endif
+
+#ifdef DECODE_BAUD
+#ifndef B7200
+#define B7200 B4800
+#endif
+
+#ifndef B14400
+#define B14400 B9600
+#endif
+
+#ifndef B19200
+# define B19200 B14400
+#endif
+
+#ifndef B28800
+#define B28800 B19200
+#endif
+
+#ifndef B38400
+# define B38400 B28800
+#endif
+
+#ifndef B57600
+#define B57600 B38400
+#endif
+
+#ifndef B76800
+#define B76800 B57600
+#endif
+
+#ifndef B115200
+#define B115200 B76800
+#endif
+
+#ifndef B230400
+#define B230400 B115200
+#endif
+
+
+/*
+ * This code assumes that the values B0, B50, B75...
+ * are in ascending order. They do not have to be
+ * contiguous.
+ */
+struct termspeeds {
+ long speed;
+ long value;
+} termspeeds[] = {
+ { 0, B0 }, { 50, B50 }, { 75, B75 },
+ { 110, B110 }, { 134, B134 }, { 150, B150 },
+ { 200, B200 }, { 300, B300 }, { 600, B600 },
+ { 1200, B1200 }, { 1800, B1800 }, { 2400, B2400 },
+ { 4800, B4800 }, { 7200, B7200 }, { 9600, B9600 },
+ { 14400, B14400 }, { 19200, B19200 }, { 28800, B28800 },
+ { 38400, B38400 }, { 57600, B57600 }, { 115200, B115200 },
+ { 230400, B230400 }, { -1, B230400 }
+};
+#endif /* DECODE_BAUD */
+
+ void
+TerminalSpeeds(ispeed, ospeed)
+ long *ispeed;
+ long *ospeed;
+{
+#ifdef DECODE_BAUD
+ register struct termspeeds *tp;
+#endif /* DECODE_BAUD */
+ register long in, out;
+
+ out = cfgetospeed(&old_tc);
+ in = cfgetispeed(&old_tc);
+ if (in == 0)
+ in = out;
+
+#ifdef DECODE_BAUD
+ tp = termspeeds;
+ while ((tp->speed != -1) && (tp->value < in))
+ tp++;
+ *ispeed = tp->speed;
+
+ tp = termspeeds;
+ while ((tp->speed != -1) && (tp->value < out))
+ tp++;
+ *ospeed = tp->speed;
+#else /* DECODE_BAUD */
+ *ispeed = in;
+ *ospeed = out;
+#endif /* DECODE_BAUD */
+}
+
+ int
+TerminalWindowSize(rows, cols)
+ long *rows, *cols;
+{
+#ifdef TIOCGWINSZ
+ struct winsize ws;
+
+ if (ioctl(fileno(stdin), TIOCGWINSZ, (char *)&ws) >= 0) {
+ *rows = ws.ws_row;
+ *cols = ws.ws_col;
+ return 1;
+ }
+#endif /* TIOCGWINSZ */
+ return 0;
+}
+
+ int
+NetClose(fd)
+ int fd;
+{
+ return close(fd);
+}
+
+
+ void
+NetNonblockingIO(fd, onoff)
+ int fd;
+ int onoff;
+{
+ ioctl(fd, FIONBIO, (char *)&onoff);
+}
+
+#if defined(TN3270)
+ void
+NetSigIO(fd, onoff)
+ int fd;
+ int onoff;
+{
+ ioctl(fd, FIOASYNC, (char *)&onoff); /* hear about input */
+}
+
+ void
+NetSetPgrp(fd)
+ int fd;
+{
+ int myPid;
+
+ myPid = getpid();
+ fcntl(fd, F_SETOWN, myPid);
+}
+#endif /*defined(TN3270)*/
+
+/*
+ * Various signal handling routines.
+ */
+
+ /* ARGSUSED */
+ SIG_FUNC_RET
+deadpeer(sig)
+ int sig;
+{
+ setcommandmode();
+ longjmp(peerdied, -1);
+}
+
+ /* ARGSUSED */
+ SIG_FUNC_RET
+intr(sig)
+ int sig;
+{
+ if (localchars) {
+ intp();
+ return;
+ }
+ setcommandmode();
+ longjmp(toplevel, -1);
+}
+
+ /* ARGSUSED */
+ SIG_FUNC_RET
+intr2(sig)
+ int sig;
+{
+ if (localchars) {
+#ifdef KLUDGELINEMODE
+ if (kludgelinemode)
+ sendbrk();
+ else
+#endif
+ sendabort();
+ return;
+ }
+}
+
+#ifdef SIGTSTP
+ /* ARGSUSED */
+ SIG_FUNC_RET
+susp(sig)
+ int sig;
+{
+ if ((rlogin != _POSIX_VDISABLE) && rlogin_susp())
+ return;
+ if (localchars)
+ sendsusp();
+}
+#endif
+
+#ifdef SIGWINCH
+ /* ARGSUSED */
+ SIG_FUNC_RET
+sendwin(sig)
+ int sig;
+{
+ if (connected) {
+ sendnaws();
+ }
+}
+#endif
+
+#ifdef SIGINFO
+ /* ARGSUSED */
+ SIG_FUNC_RET
+ayt(sig)
+ int sig;
+{
+ if (connected)
+ sendayt();
+ else
+ ayt_status();
+}
+#endif
+
+
+ void
+sys_telnet_init()
+{
+ (void) signal(SIGINT, intr);
+ (void) signal(SIGQUIT, intr2);
+ (void) signal(SIGPIPE, deadpeer);
+#ifdef SIGWINCH
+ (void) signal(SIGWINCH, sendwin);
+#endif
+#ifdef SIGTSTP
+ (void) signal(SIGTSTP, susp);
+#endif
+#ifdef SIGINFO
+ (void) signal(SIGINFO, ayt);
+#endif
+
+ setconnmode(0);
+
+ NetNonblockingIO(net, 1);
+
+#if defined(TN3270)
+ if (noasynchnet == 0) { /* DBX can't handle! */
+ NetSigIO(net, 1);
+ NetSetPgrp(net);
+ }
+#endif /* defined(TN3270) */
+
+#if defined(SO_OOBINLINE)
+ if (SetSockOpt(net, SOL_SOCKET, SO_OOBINLINE, 1) == -1) {
+ perror("SetSockOpt");
+ }
+#endif /* defined(SO_OOBINLINE) */
+}
+
+/*
+ * Process rings -
+ *
+ * This routine tries to fill up/empty our various rings.
+ *
+ * The parameter specifies whether this is a poll operation,
+ * or a block-until-something-happens operation.
+ *
+ * The return value is 1 if something happened, 0 if not.
+ */
+
+ int
+process_rings(netin, netout, netex, ttyin, ttyout, poll)
+ int poll; /* If 0, then block until something to do */
+{
+ register int c;
+ /* One wants to be a bit careful about setting returnValue
+ * to one, since a one implies we did some useful work,
+ * and therefore probably won't be called to block next
+ * time (TN3270 mode only).
+ */
+ int returnValue = 0;
+ static struct timeval TimeValue = { 0 };
+
+ if (netout) {
+ FD_SET(net, &obits);
+ }
+ if (ttyout) {
+ FD_SET(tout, &obits);
+ }
+#if defined(TN3270)
+ if (ttyin) {
+ FD_SET(tin, &ibits);
+ }
+#else /* defined(TN3270) */
+ if (ttyin) {
+ FD_SET(tin, &ibits);
+ }
+#endif /* defined(TN3270) */
+#if defined(TN3270)
+ if (netin) {
+ FD_SET(net, &ibits);
+ }
+# else /* !defined(TN3270) */
+ if (netin) {
+ FD_SET(net, &ibits);
+ }
+# endif /* !defined(TN3270) */
+ if (netex) {
+ FD_SET(net, &xbits);
+ }
+ if ((c = select(16, &ibits, &obits, &xbits,
+ (poll == 0)? (struct timeval *)0 : &TimeValue)) < 0) {
+ if (c == -1) {
+ /*
+ * we can get EINTR if we are in line mode,
+ * and the user does an escape (TSTP), or
+ * some other signal generator.
+ */
+ if (errno == EINTR) {
+ return 0;
+ }
+# if defined(TN3270)
+ /*
+ * we can get EBADF if we were in transparent
+ * mode, and the transcom process died.
+ */
+ if (errno == EBADF) {
+ /*
+ * zero the bits (even though kernel does it)
+ * to make sure we are selecting on the right
+ * ones.
+ */
+ FD_ZERO(&ibits);
+ FD_ZERO(&obits);
+ FD_ZERO(&xbits);
+ return 0;
+ }
+# endif /* defined(TN3270) */
+ /* I don't like this, does it ever happen? */
+ printf("sleep(5) from telnet, after select\r\n");
+ sleep(5);
+ }
+ return 0;
+ }
+
+ /*
+ * Any urgent data?
+ */
+ if (FD_ISSET(net, &xbits)) {
+ FD_CLR(net, &xbits);
+ SYNCHing = 1;
+ (void) ttyflush(1); /* flush already enqueued data */
+ }
+
+ /*
+ * Something to read from the network...
+ */
+ if (FD_ISSET(net, &ibits)) {
+ int canread;
+
+ FD_CLR(net, &ibits);
+ canread = ring_empty_consecutive(&netiring);
+#if !defined(SO_OOBINLINE)
+ /*
+ * In 4.2 (and some early 4.3) systems, the
+ * OOB indication and data handling in the kernel
+ * is such that if two separate TCP Urgent requests
+ * come in, one byte of TCP data will be overlaid.
+ * This is fatal for Telnet, but we try to live
+ * with it.
+ *
+ * In addition, in 4.2 (and...), a special protocol
+ * is needed to pick up the TCP Urgent data in
+ * the correct sequence.
+ *
+ * What we do is: if we think we are in urgent
+ * mode, we look to see if we are "at the mark".
+ * If we are, we do an OOB receive. If we run
+ * this twice, we will do the OOB receive twice,
+ * but the second will fail, since the second
+ * time we were "at the mark", but there wasn't
+ * any data there (the kernel doesn't reset
+ * "at the mark" until we do a normal read).
+ * Once we've read the OOB data, we go ahead
+ * and do normal reads.
+ *
+ * There is also another problem, which is that
+ * since the OOB byte we read doesn't put us
+ * out of OOB state, and since that byte is most
+ * likely the TELNET DM (data mark), we would
+ * stay in the TELNET SYNCH (SYNCHing) state.
+ * So, clocks to the rescue. If we've "just"
+ * received a DM, then we test for the
+ * presence of OOB data when the receive OOB
+ * fails (and AFTER we did the normal mode read
+ * to clear "at the mark").
+ */
+ if (SYNCHing) {
+ int atmark;
+ static int bogus_oob = 0, first = 1;
+
+ ioctl(net, SIOCATMARK, (char *)&atmark);
+ if (atmark) {
+ c = recv(net, netiring.supply, canread, MSG_OOB);
+ if ((c == -1) && (errno == EINVAL)) {
+ c = recv(net, netiring.supply, canread, 0);
+ if (clocks.didnetreceive < clocks.gotDM) {
+ SYNCHing = stilloob(net);
+ }
+ } else if (first && c > 0) {
+ /*
+ * Bogosity check. Systems based on 4.2BSD
+ * do not return an error if you do a second
+ * recv(MSG_OOB). So, we do one. If it
+ * succeeds and returns exactly the same
+ * data, then assume that we are running
+ * on a broken system and set the bogus_oob
+ * flag. (If the data was different, then
+ * we probably got some valid new data, so
+ * increment the count...)
+ */
+ int i;
+ i = recv(net, netiring.supply + c, canread - c, MSG_OOB);
+ if (i == c &&
+ memcmp(netiring.supply, netiring.supply + c, i) == 0) {
+ bogus_oob = 1;
+ first = 0;
+ } else if (i < 0) {
+ bogus_oob = 0;
+ first = 0;
+ } else
+ c += i;
+ }
+ if (bogus_oob && c > 0) {
+ int i;
+ /*
+ * Bogosity. We have to do the read
+ * to clear the atmark to get out of
+ * an infinate loop.
+ */
+ i = read(net, netiring.supply + c, canread - c);
+ if (i > 0)
+ c += i;
+ }
+ } else {
+ c = recv(net, netiring.supply, canread, 0);
+ }
+ } else {
+ c = recv(net, netiring.supply, canread, 0);
+ }
+ settimer(didnetreceive);
+#else /* !defined(SO_OOBINLINE) */
+ c = recv(net, (char *)netiring.supply, canread, 0);
+#endif /* !defined(SO_OOBINLINE) */
+ if (c < 0 && errno == EWOULDBLOCK) {
+ c = 0;
+ } else if (c <= 0) {
+ return -1;
+ }
+ if (netdata) {
+ Dump('<', netiring.supply, c);
+ }
+ if (c)
+ ring_supplied(&netiring, c);
+ returnValue = 1;
+ }
+
+ /*
+ * Something to read from the tty...
+ */
+ if (FD_ISSET(tin, &ibits)) {
+ FD_CLR(tin, &ibits);
+ c = TerminalRead(ttyiring.supply, ring_empty_consecutive(&ttyiring));
+ if (c < 0 && errno == EIO)
+ c = 0;
+ if (c < 0 && errno == EWOULDBLOCK) {
+ c = 0;
+ } else {
+ /* EOF detection for line mode!!!! */
+ if ((c == 0) && MODE_LOCAL_CHARS(globalmode) && isatty(tin)) {
+ /* must be an EOF... */
+ *ttyiring.supply = termEofChar;
+ c = 1;
+ }
+ if (c <= 0) {
+ return -1;
+ }
+ if (termdata) {
+ Dump('<', ttyiring.supply, c);
+ }
+ ring_supplied(&ttyiring, c);
+ }
+ returnValue = 1; /* did something useful */
+ }
+
+ if (FD_ISSET(net, &obits)) {
+ FD_CLR(net, &obits);
+ returnValue |= netflush();
+ }
+ if (FD_ISSET(tout, &obits)) {
+ FD_CLR(tout, &obits);
+ returnValue |= (ttyflush(SYNCHing|flushout) > 0);
+ }
+
+ return returnValue;
+}
diff --git a/contrib/telnet/telnet/telnet.1 b/contrib/telnet/telnet/telnet.1
new file mode 100644
index 0000000..b996fea
--- /dev/null
+++ b/contrib/telnet/telnet/telnet.1
@@ -0,0 +1,1366 @@
+.\" Copyright (c) 1983, 1990, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\" must display the following acknowledgement:
+.\" This product includes software developed by the University of
+.\" California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)telnet.1 8.6 (Berkeley) 6/1/94
+.\"
+.Dd June 1, 1994
+.Dt TELNET 1
+.Os BSD 4.2
+.Sh NAME
+.Nm telnet
+.Nd user interface to the
+.Tn TELNET
+protocol
+.Sh SYNOPSIS
+.Nm telnet
+.Op Fl 8EFKLacdfrx
+.Op Fl S Ar tos
+.Op Fl X Ar authtype
+.Op Fl e Ar escapechar
+.Op Fl k Ar realm
+.Op Fl l Ar user
+.Op Fl n Ar tracefile
+.Oo
+.Ar host
+.Op port
+.Oc
+.Sh DESCRIPTION
+The
+.Nm telnet
+command
+is used to communicate with another host using the
+.Tn TELNET
+protocol.
+If
+.Nm telnet
+is invoked without the
+.Ar host
+argument, it enters command mode,
+indicated by its prompt
+.Pq Nm telnet\&> .
+In this mode, it accepts and executes the commands listed below.
+If it is invoked with arguments, it performs an
+.Ic open
+command with those arguments.
+.Pp
+Options:
+.Bl -tag -width indent
+.It Fl 8
+Specifies an 8-bit data path. This causes an attempt to
+negotiate the
+.Dv TELNET BINARY
+option on both input and output.
+.It Fl E
+Stops any character from being recognized as an escape character.
+.It Fl F
+If Kerberos V5 authentication is being used, the
+.Fl F
+option allows the local credentials to be forwarded
+to the remote system, including any credentials that
+have already been forwarded into the local environment.
+.It Fl K
+Specifies no automatic login to the remote system.
+.It Fl L
+Specifies an 8-bit data path on output. This causes the
+BINARY option to be negotiated on output.
+.It Fl S Ar tos
+Sets the IP type-of-service (TOS) option for the telnet
+connection to the value
+.Ar tos,
+which can be a numeric TOS value
+or, on systems that support it, a symbolic
+TOS name found in the /etc/iptos file.
+.It Fl X Ar atype
+Disables the
+.Ar atype
+type of authentication.
+.It Fl a
+Attempt automatic login.
+Currently, this sends the user name via the
+.Ev USER
+variable
+of the
+.Ev ENVIRON
+option if supported by the remote system.
+The name used is that of the current user as returned by
+.Xr getlogin 2
+if it agrees with the current user ID,
+otherwise it is the name associated with the user ID.
+.It Fl c
+Disables the reading of the user's
+.Pa \&.telnetrc
+file. (See the
+.Ic toggle skiprc
+command on this man page.)
+.It Fl d
+Sets the initial value of the
+.Ic debug
+toggle to
+.Dv TRUE
+.It Fl e Ar escape char
+Sets the initial
+.Nm
+.Nm telnet
+escape character to
+.Ar escape char.
+If
+.Ar escape char
+is omitted, then
+there will be no escape character.
+.It Fl f
+If Kerberos V5 authentication is being used, the
+.Fl f
+option allows the local credentials to be forwarded to the remote system.
+.ne 1i
+.It Fl k Ar realm
+If Kerberos authentication is being used, the
+.Fl k
+option requests that telnet obtain tickets for the remote host in
+realm realm instead of the remote host's realm, as determined
+by
+.Xr krb_realmofhost 3 .
+.It Fl l Ar user
+When connecting to the remote system, if the remote system
+understands the
+.Ev ENVIRON
+option, then
+.Ar user
+will be sent to the remote system as the value for the variable USER.
+This option implies the
+.Fl a
+option.
+This option may also be used with the
+.Ic open
+command.
+.It Fl n Ar tracefile
+Opens
+.Ar tracefile
+for recording trace information.
+See the
+.Ic set tracefile
+command below.
+.It Fl r
+Specifies a user interface similar to
+.Xr rlogin 1 .
+In this
+mode, the escape character is set to the tilde (~) character,
+unless modified by the -e option.
+.It Fl x
+Turns on encryption of the data stream if possible. This
+option is not available outside of the United States and
+Canada.
+.It Ar host
+Indicates the official name, an alias, or the Internet address
+of a remote host.
+.It Ar port
+Indicates a port number (address of an application). If a number is
+not specified, the default
+.Nm telnet
+port is used.
+.El
+.Pp
+When in rlogin mode, a line of the form ~. disconnects from the
+remote host; ~ is the telnet escape character.
+Similarly, the line ~^Z suspends the telnet session.
+The line ~^] escapes to the normal telnet escape prompt.
+.Pp
+Once a connection has been opened,
+.Nm telnet
+will attempt to enable the
+.Dv TELNET LINEMODE
+option.
+If this fails, then
+.Nm telnet
+will revert to one of two input modes:
+either \*(Lqcharacter at a time\*(Rq
+or \*(Lqold line by line\*(Rq
+depending on what the remote system supports.
+.Pp
+When
+.Dv LINEMODE
+is enabled, character processing is done on the
+local system, under the control of the remote system. When input
+editing or character echoing is to be disabled, the remote system
+will relay that information. The remote system will also relay
+changes to any special characters that happen on the remote
+system, so that they can take effect on the local system.
+.Pp
+In \*(Lqcharacter at a time\*(Rq mode, most
+text typed is immediately sent to the remote host for processing.
+.Pp
+In \*(Lqold line by line\*(Rq mode, all text is echoed locally,
+and (normally) only completed lines are sent to the remote host.
+The \*(Lqlocal echo character\*(Rq (initially \*(Lq^E\*(Rq) may be used
+to turn off and on the local echo
+(this would mostly be used to enter passwords
+without the password being echoed).
+.Pp
+If the
+.Dv LINEMODE
+option is enabled, or if the
+.Ic localchars
+toggle is
+.Dv TRUE
+(the default for \*(Lqold line by line\*(Lq; see below),
+the user's
+.Ic quit ,
+.Ic intr ,
+and
+.Ic flush
+characters are trapped locally, and sent as
+.Tn TELNET
+protocol sequences to the remote side.
+If
+.Dv LINEMODE
+has ever been enabled, then the user's
+.Ic susp
+and
+.Ic eof
+are also sent as
+.Tn TELNET
+protocol sequences,
+and
+.Ic quit
+is sent as a
+.Dv TELNET ABORT
+instead of
+.Dv BREAK
+There are options (see
+.Ic toggle
+.Ic autoflush
+and
+.Ic toggle
+.Ic autosynch
+below)
+which cause this action to flush subsequent output to the terminal
+(until the remote host acknowledges the
+.Tn TELNET
+sequence) and flush previous terminal input
+(in the case of
+.Ic quit
+and
+.Ic intr ) .
+.Pp
+While connected to a remote host,
+.Nm telnet
+command mode may be entered by typing the
+.Nm telnet
+\*(Lqescape character\*(Rq (initially \*(Lq^]\*(Rq).
+When in command mode, the normal terminal editing conventions are available.
+.Pp
+The following
+.Nm telnet
+commands are available.
+Only enough of each command to uniquely identify it need be typed
+(this is also true for arguments to the
+.Ic mode ,
+.Ic set ,
+.Ic toggle ,
+.Ic unset ,
+.Ic slc ,
+.Ic environ ,
+and
+.Ic display
+commands).
+.Pp
+.Bl -tag -width "mode type"
+.It Ic auth Ar argument ...
+The auth command manipulates the information sent through the
+.Dv TELNET AUTHENTICATE
+option. Valid arguments for the
+auth command are as follows:
+.Bl -tag -width "disable type"
+.It Ic disable Ar type
+Disables the specified type of authentication. To
+obtain a list of available types, use the
+.Ic auth disable \&?
+command.
+.It Ic enable Ar type
+Enables the specified type of authentication. To
+obtain a list of available types, use the
+.Ic auth enable \&?
+command.
+.It Ic status
+Lists the current status of the various types of
+authentication.
+.El
+.It Ic close
+Close a
+.Tn TELNET
+session and return to command mode.
+.It Ic display Ar argument ...
+Displays all, or some, of the
+.Ic set
+and
+.Ic toggle
+values (see below).
+.It Ic encrypt Ar argument ...
+The encrypt command manipulates the information sent through the
+.Dv TELNET ENCRYPT
+option.
+.Pp
+Note: Because of export controls, the
+.Dv TELNET ENCRYPT
+option is not supported outside of the United States and Canada.
+.Pp
+Valid arguments for the encrypt command are as follows:
+.Bl -tag -width Ar
+.It Ic disable Ar type Ic [input|output]
+Disables the specified type of encryption. If you
+omit the input and output, both input and output
+are disabled. To obtain a list of available
+types, use the
+.Ic encrypt disable \&?
+command.
+.It Ic enable Ar type Ic [input|output]
+Enables the specified type of encryption. If you
+omit input and output, both input and output are
+enabled. To obtain a list of available types, use the
+.Ic encrypt enable \&?
+command.
+.It Ic input
+This is the same as the
+.Ic encrypt start input
+command.
+.It Ic -input
+This is the same as the
+.Ic encrypt stop input
+command.
+.It Ic output
+This is the same as the
+.Ic encrypt start output
+command.
+.It Ic -output
+This is the same as the
+.Ic encrypt stop output
+command.
+.It Ic start Ic [input|output]
+Attempts to start encryption. If you omit
+.Ic input
+and
+.Ic output,
+both input and output are enabled. To
+obtain a list of available types, use the
+.Ic encrypt enable \&?
+command.
+.It Ic status
+Lists the current status of encryption.
+.It Ic stop Ic [input|output]
+Stops encryption. If you omit input and output,
+encryption is on both input and output.
+.It Ic type Ar type
+Sets the default type of encryption to be used
+with later
+.Ic encrypt start
+or
+.Ic encrypt stop
+commands.
+.El
+.It Ic environ Ar arguments...
+The
+.Ic environ
+command is used to manipulate the
+the variables that my be sent through the
+.Dv TELNET ENVIRON
+option.
+The initial set of variables is taken from the users
+environment, with only the
+.Ev DISPLAY
+and
+.Ev PRINTER
+variables being exported by default.
+The
+.Ev USER
+variable is also exported if the
+.Fl a
+or
+.Fl l
+options are used.
+.br
+Valid arguments for the
+.Ic environ
+command are:
+.Bl -tag -width Fl
+.It Ic define Ar variable value
+Define the variable
+.Ar variable
+to have a value of
+.Ar value.
+Any variables defined by this command are automatically exported.
+The
+.Ar value
+may be enclosed in single or double quotes so
+that tabs and spaces may be included.
+.It Ic undefine Ar variable
+Remove
+.Ar variable
+from the list of environment variables.
+.It Ic export Ar variable
+Mark the variable
+.Ar variable
+to be exported to the remote side.
+.It Ic unexport Ar variable
+Mark the variable
+.Ar variable
+to not be exported unless
+explicitly asked for by the remote side.
+.It Ic list
+List the current set of environment variables.
+Those marked with a
+.Cm *
+will be sent automatically,
+other variables will only be sent if explicitly requested.
+.It Ic \&?
+Prints out help information for the
+.Ic environ
+command.
+.El
+.It Ic logout
+Sends the
+.Dv TELNET LOGOUT
+option to the remote side.
+This command is similar to a
+.Ic close
+command; however, if the remote side does not support the
+.Dv LOGOUT
+option, nothing happens.
+If, however, the remote side does support the
+.Dv LOGOUT
+option, this command should cause the remote side to close the
+.Tn TELNET
+connection.
+If the remote side also supports the concept of
+suspending a user's session for later reattachment,
+the logout argument indicates that you
+should terminate the session immediately.
+.It Ic mode Ar type
+.Ar Type
+is one of several options, depending on the state of the
+.Tn TELNET
+session.
+The remote host is asked for permission to go into the requested mode.
+If the remote host is capable of entering that mode, the requested
+mode will be entered.
+.Bl -tag -width Ar
+.It Ic character
+Disable the
+.Dv TELNET LINEMODE
+option, or, if the remote side does not understand the
+.Dv LINEMODE
+option, then enter \*(Lqcharacter at a time\*(Lq mode.
+.It Ic line
+Enable the
+.Dv TELNET LINEMODE
+option, or, if the remote side does not understand the
+.Dv LINEMODE
+option, then attempt to enter \*(Lqold-line-by-line\*(Lq mode.
+.It Ic isig Pq Ic \-isig
+Attempt to enable (disable) the
+.Dv TRAPSIG
+mode of the
+.Dv LINEMODE
+option.
+This requires that the
+.Dv LINEMODE
+option be enabled.
+.It Ic edit Pq Ic \-edit
+Attempt to enable (disable) the
+.Dv EDIT
+mode of the
+.Dv LINEMODE
+option.
+This requires that the
+.Dv LINEMODE
+option be enabled.
+.It Ic softtabs Pq Ic \-softtabs
+Attempt to enable (disable) the
+.Dv SOFT_TAB
+mode of the
+.Dv LINEMODE
+option.
+This requires that the
+.Dv LINEMODE
+option be enabled.
+.ne 1i
+.It Ic litecho Pq Ic \-litecho
+Attempt to enable (disable) the
+.Dv LIT_ECHO
+mode of the
+.Dv LINEMODE
+option.
+This requires that the
+.Dv LINEMODE
+option be enabled.
+.It Ic \&?
+Prints out help information for the
+.Ic mode
+command.
+.El
+.It Xo
+.Ic open Ar host
+.Oo Op Fl l
+.Ar user
+.Oc Ns Oo Fl
+.Ar port Oc
+.Xc
+Open a connection to the named host.
+If no port number
+is specified,
+.Nm telnet
+will attempt to contact a
+.Tn TELNET
+server at the default port.
+The host specification may be either a host name (see
+.Xr hosts 5 )
+or an Internet address specified in the \*(Lqdot notation\*(Rq (see
+.Xr inet 3 ) .
+The
+.Op Fl l
+option may be used to specify the user name
+to be passed to the remote system via the
+.Ev ENVIRON
+option.
+When connecting to a non-standard port,
+.Nm telnet
+omits any automatic initiation of
+.Tn TELNET
+options. When the port number is preceded by a minus sign,
+the initial option negotiation is done.
+After establishing a connection, the file
+.Pa \&.telnetrc
+in the
+users home directory is opened. Lines beginning with a # are
+comment lines. Blank lines are ignored. Lines that begin
+without white space are the start of a machine entry. The
+first thing on the line is the name of the machine that is
+being connected to. The rest of the line, and successive
+lines that begin with white space are assumed to be
+.Nm telnet
+commands and are processed as if they had been typed
+in manually to the
+.Nm telnet
+command prompt.
+.It Ic quit
+Close any open
+.Tn TELNET
+session and exit
+.Nm telnet .
+An end of file (in command mode) will also close a session and exit.
+.It Ic send Ar arguments
+Sends one or more special character sequences to the remote host.
+The following are the arguments which may be specified
+(more than one argument may be specified at a time):
+.Pp
+.Bl -tag -width escape
+.It Ic abort
+Sends the
+.Dv TELNET ABORT
+(Abort
+processes)
+sequence.
+.It Ic ao
+Sends the
+.Dv TELNET AO
+(Abort Output) sequence, which should cause the remote system to flush
+all output
+.Em from
+the remote system
+.Em to
+the user's terminal.
+.It Ic ayt
+Sends the
+.Dv TELNET AYT
+(Are You There)
+sequence, to which the remote system may or may not choose to respond.
+.It Ic brk
+Sends the
+.Dv TELNET BRK
+(Break) sequence, which may have significance to the remote
+system.
+.It Ic ec
+Sends the
+.Dv TELNET EC
+(Erase Character)
+sequence, which should cause the remote system to erase the last character
+entered.
+.It Ic el
+Sends the
+.Dv TELNET EL
+(Erase Line)
+sequence, which should cause the remote system to erase the line currently
+being entered.
+.It Ic eof
+Sends the
+.Dv TELNET EOF
+(End Of File)
+sequence.
+.It Ic eor
+Sends the
+.Dv TELNET EOR
+(End of Record)
+sequence.
+.It Ic escape
+Sends the current
+.Nm telnet
+escape character (initially \*(Lq^\*(Rq).
+.It Ic ga
+Sends the
+.Dv TELNET GA
+(Go Ahead)
+sequence, which likely has no significance to the remote system.
+.It Ic getstatus
+If the remote side supports the
+.Dv TELNET STATUS
+command,
+.Ic getstatus
+will send the subnegotiation to request that the server send
+its current option status.
+.ne 1i
+.It Ic ip
+Sends the
+.Dv TELNET IP
+(Interrupt Process) sequence, which should cause the remote
+system to abort the currently running process.
+.It Ic nop
+Sends the
+.Dv TELNET NOP
+(No OPeration)
+sequence.
+.It Ic susp
+Sends the
+.Dv TELNET SUSP
+(SUSPend process)
+sequence.
+.It Ic synch
+Sends the
+.Dv TELNET SYNCH
+sequence.
+This sequence causes the remote system to discard all previously typed
+(but not yet read) input.
+This sequence is sent as
+.Tn TCP
+urgent
+data (and may not work if the remote system is a
+.Bx 4.2
+system -- if
+it doesn't work, a lower case \*(Lqr\*(Rq may be echoed on the terminal).
+.It Ic do Ar cmd
+.It Ic dont Ar cmd
+.It Ic will Ar cmd
+.It Ic wont Ar cmd
+Sends the
+.Dv TELNET DO
+.Ar cmd
+sequence.
+.Ar Cmd
+can be either a decimal number between 0 and 255,
+or a symbolic name for a specific
+.Dv TELNET
+command.
+.Ar Cmd
+can also be either
+.Ic help
+or
+.Ic \&?
+to print out help information, including
+a list of known symbolic names.
+.It Ic \&?
+Prints out help information for the
+.Ic send
+command.
+.El
+.It Ic set Ar argument value
+.It Ic unset Ar argument value
+The
+.Ic set
+command will set any one of a number of
+.Nm telnet
+variables to a specific value or to
+.Dv TRUE .
+The special value
+.Ic off
+turns off the function associated with
+the variable, this is equivalent to using the
+.Ic unset
+command.
+The
+.Ic unset
+command will disable or set to
+.Dv FALSE
+any of the specified functions.
+The values of variables may be interrogated with the
+.Ic display
+command.
+The variables which may be set or unset, but not toggled, are
+listed here. In addition, any of the variables for the
+.Ic toggle
+command may be explicitly set or unset using
+the
+.Ic set
+and
+.Ic unset
+commands.
+.Bl -tag -width escape
+.It Ic ayt
+If
+.Tn TELNET
+is in localchars mode, or
+.Dv LINEMODE
+is enabled, and the status character is typed, a
+.Dv TELNET AYT
+sequence (see
+.Ic send ayt
+preceding) is sent to the
+remote host. The initial value for the "Are You There"
+character is the terminal's status character.
+.It Ic echo
+This is the value (initially \*(Lq^E\*(Rq) which, when in
+\*(Lqline by line\*(Rq mode, toggles between doing local echoing
+of entered characters (for normal processing), and suppressing
+echoing of entered characters (for entering, say, a password).
+.It Ic eof
+If
+.Nm telnet
+is operating in
+.Dv LINEMODE
+or \*(Lqold line by line\*(Rq mode, entering this character
+as the first character on a line will cause this character to be
+sent to the remote system.
+The initial value of the eof character is taken to be the terminal's
+.Ic eof
+character.
+.It Ic erase
+If
+.Nm telnet
+is in
+.Ic localchars
+mode (see
+.Ic toggle
+.Ic localchars
+below),
+.Sy and
+if
+.Nm telnet
+is operating in \*(Lqcharacter at a time\*(Rq mode, then when this
+character is typed, a
+.Dv TELNET EC
+sequence (see
+.Ic send
+.Ic ec
+above)
+is sent to the remote system.
+The initial value for the erase character is taken to be
+the terminal's
+.Ic erase
+character.
+.It Ic escape
+This is the
+.Nm telnet
+escape character (initially \*(Lq^[\*(Rq) which causes entry
+into
+.Nm telnet
+command mode (when connected to a remote system).
+.It Ic flushoutput
+If
+.Nm telnet
+is in
+.Ic localchars
+mode (see
+.Ic toggle
+.Ic localchars
+below)
+and the
+.Ic flushoutput
+character is typed, a
+.Dv TELNET AO
+sequence (see
+.Ic send
+.Ic ao
+above)
+is sent to the remote host.
+The initial value for the flush character is taken to be
+the terminal's
+.Ic flush
+character.
+.It Ic forw1
+.It Ic forw2
+If
+.Tn TELNET
+is operating in
+.Dv LINEMODE ,
+these are the
+characters that, when typed, cause partial lines to be
+forwarded to the remote system. The initial value for
+the forwarding characters are taken from the terminal's
+eol and eol2 characters.
+.It Ic interrupt
+If
+.Nm telnet
+is in
+.Ic localchars
+mode (see
+.Ic toggle
+.Ic localchars
+below)
+and the
+.Ic interrupt
+character is typed, a
+.Dv TELNET IP
+sequence (see
+.Ic send
+.Ic ip
+above)
+is sent to the remote host.
+The initial value for the interrupt character is taken to be
+the terminal's
+.Ic intr
+character.
+.It Ic kill
+If
+.Nm telnet
+is in
+.Ic localchars
+mode (see
+.Ic toggle
+.Ic localchars
+below),
+.Ic and
+if
+.Nm telnet
+is operating in \*(Lqcharacter at a time\*(Rq mode, then when this
+character is typed, a
+.Dv TELNET EL
+sequence (see
+.Ic send
+.Ic el
+above)
+is sent to the remote system.
+The initial value for the kill character is taken to be
+the terminal's
+.Ic kill
+character.
+.It Ic lnext
+If
+.Nm telnet
+is operating in
+.Dv LINEMODE
+or \*(Lqold line by line\*(Lq mode, then this character is taken to
+be the terminal's
+.Ic lnext
+character.
+The initial value for the lnext character is taken to be
+the terminal's
+.Ic lnext
+character.
+.It Ic quit
+If
+.Nm telnet
+is in
+.Ic localchars
+mode (see
+.Ic toggle
+.Ic localchars
+below)
+and the
+.Ic quit
+character is typed, a
+.Dv TELNET BRK
+sequence (see
+.Ic send
+.Ic brk
+above)
+is sent to the remote host.
+The initial value for the quit character is taken to be
+the terminal's
+.Ic quit
+character.
+.It Ic reprint
+If
+.Nm telnet
+is operating in
+.Dv LINEMODE
+or \*(Lqold line by line\*(Lq mode, then this character is taken to
+be the terminal's
+.Ic reprint
+character.
+The initial value for the reprint character is taken to be
+the terminal's
+.Ic reprint
+character.
+.It Ic rlogin
+This is the rlogin escape character.
+If set, the normal
+.Tn TELNET
+escape character is ignored unless it is
+preceded by this character at the beginning of a line.
+This character, at the beginning of a line followed by
+a "." closes the connection; when followed by a ^Z it
+suspends the telnet command. The initial state is to
+disable the rlogin escape character.
+.It Ic start
+If the
+.Dv TELNET TOGGLE-FLOW-CONTROL
+option has been enabled,
+then this character is taken to
+be the terminal's
+.Ic start
+character.
+The initial value for the kill character is taken to be
+the terminal's
+.Ic start
+character.
+.It Ic stop
+If the
+.Dv TELNET TOGGLE-FLOW-CONTROL
+option has been enabled,
+then this character is taken to
+be the terminal's
+.Ic stop
+character.
+The initial value for the kill character is taken to be
+the terminal's
+.Ic stop
+character.
+.It Ic susp
+If
+.Nm telnet
+is in
+.Ic localchars
+mode, or
+.Dv LINEMODE
+is enabled, and the
+.Ic suspend
+character is typed, a
+.Dv TELNET SUSP
+sequence (see
+.Ic send
+.Ic susp
+above)
+is sent to the remote host.
+The initial value for the suspend character is taken to be
+the terminal's
+.Ic suspend
+character.
+.ne 1i
+.It Ic tracefile
+This is the file to which the output, caused by
+.Ic netdata
+or
+.Ic option
+tracing being
+.Dv TRUE ,
+will be written. If it is set to
+.Dq Fl ,
+then tracing information will be written to standard output (the default).
+.It Ic worderase
+If
+.Nm telnet
+is operating in
+.Dv LINEMODE
+or \*(Lqold line by line\*(Lq mode, then this character is taken to
+be the terminal's
+.Ic worderase
+character.
+The initial value for the worderase character is taken to be
+the terminal's
+.Ic worderase
+character.
+.It Ic \&?
+Displays the legal
+.Ic set
+.Pq Ic unset
+commands.
+.El
+.It Ic slc Ar state
+The
+.Ic slc
+command (Set Local Characters) is used to set
+or change the state of the the special
+characters when the
+.Dv TELNET LINEMODE
+option has
+been enabled. Special characters are characters that get
+mapped to
+.Tn TELNET
+commands sequences (like
+.Ic ip
+or
+.Ic quit )
+or line editing characters (like
+.Ic erase
+and
+.Ic kill ) .
+By default, the local special characters are exported.
+.Bl -tag -width Fl
+.It Ic check
+Verify the current settings for the current special characters.
+The remote side is requested to send all the current special
+character settings, and if there are any discrepancies with
+the local side, the local side will switch to the remote value.
+.It Ic export
+Switch to the local defaults for the special characters. The
+local default characters are those of the local terminal at
+the time when
+.Nm telnet
+was started.
+.It Ic import
+Switch to the remote defaults for the special characters.
+The remote default characters are those of the remote system
+at the time when the
+.Tn TELNET
+connection was established.
+.It Ic \&?
+Prints out help information for the
+.Ic slc
+command.
+.El
+.It Ic status
+Show the current status of
+.Nm telnet .
+This includes the peer one is connected to, as well
+as the current mode.
+.It Ic toggle Ar arguments ...
+Toggle (between
+.Dv TRUE
+and
+.Dv FALSE )
+various flags that control how
+.Nm telnet
+responds to events.
+These flags may be set explicitly to
+.Dv TRUE
+or
+.Dv FALSE
+using the
+.Ic set
+and
+.Ic unset
+commands listed above.
+More than one argument may be specified.
+The state of these flags may be interrogated with the
+.Ic display
+command.
+Valid arguments are:
+.Bl -tag -width Ar
+.It Ic authdebug
+Turns on debugging information for the authentication code.
+.It Ic autoflush
+If
+.Ic autoflush
+and
+.Ic localchars
+are both
+.Dv TRUE ,
+then when the
+.Ic ao ,
+or
+.Ic quit
+characters are recognized (and transformed into
+.Tn TELNET
+sequences; see
+.Ic set
+above for details),
+.Nm telnet
+refuses to display any data on the user's terminal
+until the remote system acknowledges (via a
+.Dv TELNET TIMING MARK
+option)
+that it has processed those
+.Tn TELNET
+sequences.
+The initial value for this toggle is
+.Dv TRUE
+if the terminal user had not
+done an "stty noflsh", otherwise
+.Dv FALSE
+(see
+.Xr stty 1 ) .
+.It Ic autodecrypt
+When the
+.Dv TELNET ENCRYPT
+option is negotiated, by
+default the actual encryption (decryption) of the data
+stream does not start automatically. The autoencrypt
+(autodecrypt) command states that encryption of the
+output (input) stream should be enabled as soon as
+possible.
+.sp
+.Pp
+Note: Because of export controls, the
+.Dv TELNET ENCRYPT
+option is not supported outside the United States and Canada.
+.It Ic autologin
+If the remote side supports the
+.Dv TELNET AUTHENTICATION
+option
+.Tn TELNET
+attempts to use it to perform automatic authentication. If the
+.Dv AUTHENTICATION
+option is not supported, the user's login
+name are propagated through the
+.Dv TELNET ENVIRON
+option.
+This command is the same as specifying
+.Ar a
+option on the
+.Ic open
+command.
+.It Ic autosynch
+If
+.Ic autosynch
+and
+.Ic localchars
+are both
+.Dv TRUE ,
+then when either the
+.Ic intr
+or
+.Ic quit
+characters is typed (see
+.Ic set
+above for descriptions of the
+.Ic intr
+and
+.Ic quit
+characters), the resulting
+.Tn TELNET
+sequence sent is followed by the
+.Dv TELNET SYNCH
+sequence.
+This procedure
+.Ic should
+cause the remote system to begin throwing away all previously
+typed input until both of the
+.Tn TELNET
+sequences have been read and acted upon.
+The initial value of this toggle is
+.Dv FALSE .
+.It Ic binary
+Enable or disable the
+.Dv TELNET BINARY
+option on both input and output.
+.It Ic inbinary
+Enable or disable the
+.Dv TELNET BINARY
+option on input.
+.It Ic outbinary
+Enable or disable the
+.Dv TELNET BINARY
+option on output.
+.It Ic crlf
+If this is
+.Dv TRUE ,
+then carriage returns will be sent as
+.Li <CR><LF> .
+If this is
+.Dv FALSE ,
+then carriage returns will be send as
+.Li <CR><NUL> .
+The initial value for this toggle is
+.Dv FALSE .
+.It Ic crmod
+Toggle carriage return mode.
+When this mode is enabled, most carriage return characters received from
+the remote host will be mapped into a carriage return followed by
+a line feed.
+This mode does not affect those characters typed by the user, only
+those received from the remote host.
+This mode is not very useful unless the remote host
+only sends carriage return, but never line feed.
+The initial value for this toggle is
+.Dv FALSE .
+.It Ic debug
+Toggles socket level debugging (useful only to the
+.Ic super user ) .
+The initial value for this toggle is
+.Dv FALSE .
+.It Ic encdebug
+Turns on debugging information for the encryption code.
+.It Ic localchars
+If this is
+.Dv TRUE ,
+then the
+.Ic flush ,
+.Ic interrupt ,
+.Ic quit ,
+.Ic erase ,
+and
+.Ic kill
+characters (see
+.Ic set
+above) are recognized locally, and transformed into (hopefully) appropriate
+.Tn TELNET
+control sequences
+(respectively
+.Ic ao ,
+.Ic ip ,
+.Ic brk ,
+.Ic ec ,
+and
+.Ic el ;
+see
+.Ic send
+above).
+The initial value for this toggle is
+.Dv TRUE
+in \*(Lqold line by line\*(Rq mode,
+and
+.Dv FALSE
+in \*(Lqcharacter at a time\*(Rq mode.
+When the
+.Dv LINEMODE
+option is enabled, the value of
+.Ic localchars
+is ignored, and assumed to always be
+.Dv TRUE .
+If
+.Dv LINEMODE
+has ever been enabled, then
+.Ic quit
+is sent as
+.Ic abort ,
+and
+.Ic eof and
+.B suspend
+are sent as
+.Ic eof and
+.Ic susp ,
+see
+.Ic send
+above).
+.It Ic netdata
+Toggles the display of all network data (in hexadecimal format).
+The initial value for this toggle is
+.Dv FALSE .
+.It Ic options
+Toggles the display of some internal
+.Nm telnet
+protocol processing (having to do with
+.Tn TELNET
+options).
+The initial value for this toggle is
+.Dv FALSE .
+.ne 1i
+.It Ic prettydump
+When the
+.Ic netdata
+toggle is enabled, if
+.Ic prettydump
+is enabled the output from the
+.Ic netdata
+command will be formatted in a more user readable format.
+Spaces are put between each character in the output, and the
+beginning of any
+.Tn TELNET
+escape sequence is preceded by a '*' to aid in locating them.
+.It Ic skiprc
+When the skiprc toggle is
+.Dv TRUE ,
+.Tn TELNET
+skips the reading of the
+.Pa \&.telnetrc
+file in the users home
+directory when connections are opened. The initial
+value for this toggle is
+.Dv FALSE.
+.It Ic termdata
+Toggles the display of all terminal data (in hexadecimal format).
+The initial value for this toggle is
+.Dv FALSE .
+.It Ic verbose_encrypt
+When the
+.Ic verbose_encrypt
+toggle is
+.Dv TRUE ,
+.Tn TELNET
+prints out a message each time encryption is enabled or
+disabled. The initial value for this toggle is
+.Dv FALSE.
+Note: Because of export controls, data encryption
+is not supported outside of the United States and Canada.
+.It Ic \&?
+Displays the legal
+.Ic toggle
+commands.
+.El
+.It Ic z
+Suspend
+.Nm telnet .
+This command only works when the user is using the
+.Xr csh 1 .
+.It Ic \&! Op Ar command
+Execute a single command in a subshell on the local
+system. If
+.Ic command
+is omitted, then an interactive
+subshell is invoked.
+.It Ic \&? Op Ar command
+Get help. With no arguments,
+.Nm telnet
+prints a help summary.
+If a command is specified,
+.Nm telnet
+will print the help information for just that command.
+.El
+.Sh ENVIRONMENT
+.Nm Telnet
+uses at least the
+.Ev HOME ,
+.Ev SHELL ,
+.Ev DISPLAY ,
+and
+.Ev TERM
+environment variables.
+Other environment variables may be propagated
+to the other side via the
+.Dv TELNET ENVIRON
+option.
+.Sh FILES
+.Bl -tag -width ~/.telnetrc -compact
+.It Pa ~/.telnetrc
+user customized telnet startup values
+.El
+.Sh HISTORY
+The
+.Nm Telnet
+command appeared in
+.Bx 4.2 .
+.Sh NOTES
+.Pp
+On some remote systems, echo has to be turned off manually when in
+\*(Lqold line by line\*(Rq mode.
+.Pp
+In \*(Lqold line by line\*(Rq mode or
+.Dv LINEMODE
+the terminal's
+.Ic eof
+character is only recognized (and sent to the remote system)
+when it is the first character on a line.
diff --git a/contrib/telnet/telnet/telnet.c b/contrib/telnet/telnet/telnet.c
new file mode 100644
index 0000000..e792262
--- /dev/null
+++ b/contrib/telnet/telnet/telnet.c
@@ -0,0 +1,2650 @@
+/*
+ * Copyright (c) 1988, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)telnet.c 8.4 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#if defined(unix)
+#include <signal.h>
+/* By the way, we need to include curses.h before telnet.h since,
+ * among other things, telnet.h #defines 'DO', which is a variable
+ * declared in curses.h.
+ */
+#endif /* defined(unix) */
+
+#include <arpa/telnet.h>
+
+#include <ctype.h>
+
+#include "ring.h"
+
+#include "defines.h"
+#include "externs.h"
+#include "types.h"
+#include "general.h"
+
+
+#define strip(x) ((my_want_state_is_wont(TELOPT_BINARY)) ? ((x)&0x7f) : (x))
+
+static unsigned char subbuffer[SUBBUFSIZE],
+ *subpointer, *subend; /* buffer for sub-options */
+#define SB_CLEAR() subpointer = subbuffer;
+#define SB_TERM() { subend = subpointer; SB_CLEAR(); }
+#define SB_ACCUM(c) if (subpointer < (subbuffer+sizeof subbuffer)) { \
+ *subpointer++ = (c); \
+ }
+
+#define SB_GET() ((*subpointer++)&0xff)
+#define SB_PEEK() ((*subpointer)&0xff)
+#define SB_EOF() (subpointer >= subend)
+#define SB_LEN() (subend - subpointer)
+
+char options[256]; /* The combined options */
+char do_dont_resp[256];
+char will_wont_resp[256];
+
+int
+ eight = 0,
+ autologin = 0, /* Autologin anyone? */
+ skiprc = 0,
+ connected,
+ showoptions,
+ In3270, /* Are we in 3270 mode? */
+ ISend, /* trying to send network data in */
+ debug = 0,
+ crmod,
+ netdata, /* Print out network data flow */
+ crlf, /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */
+#if defined(TN3270)
+ noasynchtty = 0,/* User specified "-noasynch" on command line */
+ noasynchnet = 0,/* User specified "-noasynch" on command line */
+ askedSGA = 0, /* We have talked about suppress go ahead */
+#endif /* defined(TN3270) */
+ telnetport,
+ SYNCHing, /* we are in TELNET SYNCH mode */
+ flushout, /* flush output */
+ autoflush = 0, /* flush output when interrupting? */
+ autosynch, /* send interrupt characters with SYNCH? */
+ localflow, /* we handle flow control locally */
+ restartany, /* if flow control enabled, restart on any character */
+ localchars, /* we recognize interrupt/quit */
+ donelclchars, /* the user has set "localchars" */
+ donebinarytoggle, /* the user has put us in binary */
+ dontlecho, /* do we suppress local echoing right now? */
+ globalmode;
+
+char *prompt = 0;
+
+cc_t escape;
+cc_t rlogin;
+#ifdef KLUDGELINEMODE
+cc_t echoc;
+#endif
+
+/*
+ * Telnet receiver states for fsm
+ */
+#define TS_DATA 0
+#define TS_IAC 1
+#define TS_WILL 2
+#define TS_WONT 3
+#define TS_DO 4
+#define TS_DONT 5
+#define TS_CR 6
+#define TS_SB 7 /* sub-option collection */
+#define TS_SE 8 /* looking for sub-option end */
+
+static int telrcv_state;
+#ifdef OLD_ENVIRON
+unsigned char telopt_environ = TELOPT_NEW_ENVIRON;
+#else
+# define telopt_environ TELOPT_NEW_ENVIRON
+#endif
+
+jmp_buf toplevel = { 0 };
+jmp_buf peerdied;
+
+int flushline;
+int linemode;
+
+#ifdef KLUDGELINEMODE
+int kludgelinemode = 1;
+#endif
+
+/*
+ * The following are some clocks used to decide how to interpret
+ * the relationship between various variables.
+ */
+
+Clocks clocks;
+
+#ifdef notdef
+Modelist modelist[] = {
+ { "telnet command mode", COMMAND_LINE },
+ { "character-at-a-time mode", 0 },
+ { "character-at-a-time mode (local echo)", LOCAL_ECHO|LOCAL_CHARS },
+ { "line-by-line mode (remote echo)", LINE | LOCAL_CHARS },
+ { "line-by-line mode", LINE | LOCAL_ECHO | LOCAL_CHARS },
+ { "line-by-line mode (local echoing suppressed)", LINE | LOCAL_CHARS },
+ { "3270 mode", 0 },
+};
+#endif
+
+
+/*
+ * Initialize telnet environment.
+ */
+
+ void
+init_telnet()
+{
+ env_init();
+
+ SB_CLEAR();
+ ClearArray(options);
+
+ connected = In3270 = ISend = localflow = donebinarytoggle = 0;
+#if defined(AUTHENTICATION) || defined(ENCRYPTION)
+ auth_encrypt_connect(connected);
+#endif /* defined(AUTHENTICATION) || defined(ENCRYPTION) */
+ restartany = -1;
+
+ SYNCHing = 0;
+
+ /* Don't change NetTrace */
+
+ escape = CONTROL(']');
+ rlogin = _POSIX_VDISABLE;
+#ifdef KLUDGELINEMODE
+ echoc = CONTROL('E');
+#endif
+
+ flushline = 1;
+ telrcv_state = TS_DATA;
+}
+
+
+#ifdef notdef
+#include <varargs.h>
+
+ /*VARARGS*/
+ static void
+printring(va_alist)
+ va_dcl
+{
+ va_list ap;
+ char buffer[100]; /* where things go */
+ char *ptr;
+ char *format;
+ char *string;
+ Ring *ring;
+ int i;
+
+ va_start(ap);
+
+ ring = va_arg(ap, Ring *);
+ format = va_arg(ap, char *);
+ ptr = buffer;
+
+ while ((i = *format++) != 0) {
+ if (i == '%') {
+ i = *format++;
+ switch (i) {
+ case 'c':
+ *ptr++ = va_arg(ap, int);
+ break;
+ case 's':
+ string = va_arg(ap, char *);
+ ring_supply_data(ring, buffer, ptr-buffer);
+ ring_supply_data(ring, string, strlen(string));
+ ptr = buffer;
+ break;
+ case 0:
+ ExitString("printring: trailing %%.\n", 1);
+ /*NOTREACHED*/
+ default:
+ ExitString("printring: unknown format character.\n", 1);
+ /*NOTREACHED*/
+ }
+ } else {
+ *ptr++ = i;
+ }
+ }
+ ring_supply_data(ring, buffer, ptr-buffer);
+}
+#endif
+
+/*
+ * These routines are in charge of sending option negotiations
+ * to the other side.
+ *
+ * The basic idea is that we send the negotiation if either side
+ * is in disagreement as to what the current state should be.
+ */
+
+ void
+send_do(c, init)
+ register int c, init;
+{
+ if (init) {
+ if (((do_dont_resp[c] == 0) && my_state_is_do(c)) ||
+ my_want_state_is_do(c))
+ return;
+ set_my_want_state_do(c);
+ do_dont_resp[c]++;
+ }
+ NET2ADD(IAC, DO);
+ NETADD(c);
+ printoption("SENT", DO, c);
+}
+
+ void
+send_dont(c, init)
+ register int c, init;
+{
+ if (init) {
+ if (((do_dont_resp[c] == 0) && my_state_is_dont(c)) ||
+ my_want_state_is_dont(c))
+ return;
+ set_my_want_state_dont(c);
+ do_dont_resp[c]++;
+ }
+ NET2ADD(IAC, DONT);
+ NETADD(c);
+ printoption("SENT", DONT, c);
+}
+
+ void
+send_will(c, init)
+ register int c, init;
+{
+ if (init) {
+ if (((will_wont_resp[c] == 0) && my_state_is_will(c)) ||
+ my_want_state_is_will(c))
+ return;
+ set_my_want_state_will(c);
+ will_wont_resp[c]++;
+ }
+ NET2ADD(IAC, WILL);
+ NETADD(c);
+ printoption("SENT", WILL, c);
+}
+
+ void
+send_wont(c, init)
+ register int c, init;
+{
+ if (init) {
+ if (((will_wont_resp[c] == 0) && my_state_is_wont(c)) ||
+ my_want_state_is_wont(c))
+ return;
+ set_my_want_state_wont(c);
+ will_wont_resp[c]++;
+ }
+ NET2ADD(IAC, WONT);
+ NETADD(c);
+ printoption("SENT", WONT, c);
+}
+
+
+ void
+willoption(option)
+ int option;
+{
+ int new_state_ok = 0;
+
+ if (do_dont_resp[option]) {
+ --do_dont_resp[option];
+ if (do_dont_resp[option] && my_state_is_do(option))
+ --do_dont_resp[option];
+ }
+
+ if ((do_dont_resp[option] == 0) && my_want_state_is_dont(option)) {
+
+ switch (option) {
+
+ case TELOPT_ECHO:
+# if defined(TN3270)
+ /*
+ * The following is a pain in the rear-end.
+ * Various IBM servers (some versions of Wiscnet,
+ * possibly Fibronics/Spartacus, and who knows who
+ * else) will NOT allow us to send "DO SGA" too early
+ * in the setup proceedings. On the other hand,
+ * 4.2 servers (telnetd) won't set SGA correctly.
+ * So, we are stuck. Empirically (but, based on
+ * a VERY small sample), the IBM servers don't send
+ * out anything about ECHO, so we postpone our sending
+ * "DO SGA" until we see "WILL ECHO" (which 4.2 servers
+ * DO send).
+ */
+ {
+ if (askedSGA == 0) {
+ askedSGA = 1;
+ if (my_want_state_is_dont(TELOPT_SGA))
+ send_do(TELOPT_SGA, 1);
+ }
+ }
+ /* Fall through */
+ case TELOPT_EOR:
+#endif /* defined(TN3270) */
+ case TELOPT_BINARY:
+ case TELOPT_SGA:
+ settimer(modenegotiated);
+ /* FALL THROUGH */
+ case TELOPT_STATUS:
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+#endif
+#ifdef ENCRYPTION
+ case TELOPT_ENCRYPT:
+#endif /* ENCRYPTION */
+ new_state_ok = 1;
+ break;
+
+ case TELOPT_TM:
+ if (flushout)
+ flushout = 0;
+ /*
+ * Special case for TM. If we get back a WILL,
+ * pretend we got back a WONT.
+ */
+ set_my_want_state_dont(option);
+ set_my_state_dont(option);
+ return; /* Never reply to TM will's/wont's */
+
+ case TELOPT_LINEMODE:
+ default:
+ break;
+ }
+
+ if (new_state_ok) {
+ set_my_want_state_do(option);
+ send_do(option, 0);
+ setconnmode(0); /* possibly set new tty mode */
+ } else {
+ do_dont_resp[option]++;
+ send_dont(option, 0);
+ }
+ }
+ set_my_state_do(option);
+#ifdef ENCRYPTION
+ if (option == TELOPT_ENCRYPT)
+ encrypt_send_support();
+#endif /* ENCRYPTION */
+}
+
+ void
+wontoption(option)
+ int option;
+{
+ if (do_dont_resp[option]) {
+ --do_dont_resp[option];
+ if (do_dont_resp[option] && my_state_is_dont(option))
+ --do_dont_resp[option];
+ }
+
+ if ((do_dont_resp[option] == 0) && my_want_state_is_do(option)) {
+
+ switch (option) {
+
+#ifdef KLUDGELINEMODE
+ case TELOPT_SGA:
+ if (!kludgelinemode)
+ break;
+ /* FALL THROUGH */
+#endif
+ case TELOPT_ECHO:
+ settimer(modenegotiated);
+ break;
+
+ case TELOPT_TM:
+ if (flushout)
+ flushout = 0;
+ set_my_want_state_dont(option);
+ set_my_state_dont(option);
+ return; /* Never reply to TM will's/wont's */
+
+ default:
+ break;
+ }
+ set_my_want_state_dont(option);
+ if (my_state_is_do(option))
+ send_dont(option, 0);
+ setconnmode(0); /* Set new tty mode */
+ } else if (option == TELOPT_TM) {
+ /*
+ * Special case for TM.
+ */
+ if (flushout)
+ flushout = 0;
+ set_my_want_state_dont(option);
+ }
+ set_my_state_dont(option);
+}
+
+ static void
+dooption(option)
+ int option;
+{
+ int new_state_ok = 0;
+
+ if (will_wont_resp[option]) {
+ --will_wont_resp[option];
+ if (will_wont_resp[option] && my_state_is_will(option))
+ --will_wont_resp[option];
+ }
+
+ if (will_wont_resp[option] == 0) {
+ if (my_want_state_is_wont(option)) {
+
+ switch (option) {
+
+ case TELOPT_TM:
+ /*
+ * Special case for TM. We send a WILL, but pretend
+ * we sent WONT.
+ */
+ send_will(option, 0);
+ set_my_want_state_wont(TELOPT_TM);
+ set_my_state_wont(TELOPT_TM);
+ return;
+
+# if defined(TN3270)
+ case TELOPT_EOR: /* end of record */
+# endif /* defined(TN3270) */
+ case TELOPT_BINARY: /* binary mode */
+ case TELOPT_NAWS: /* window size */
+ case TELOPT_TSPEED: /* terminal speed */
+ case TELOPT_LFLOW: /* local flow control */
+ case TELOPT_TTYPE: /* terminal type option */
+ case TELOPT_SGA: /* no big deal */
+#ifdef ENCRYPTION
+ case TELOPT_ENCRYPT: /* encryption variable option */
+#endif /* ENCRYPTION */
+ new_state_ok = 1;
+ break;
+
+ case TELOPT_NEW_ENVIRON: /* New environment variable option */
+#ifdef OLD_ENVIRON
+ if (my_state_is_will(TELOPT_OLD_ENVIRON))
+ send_wont(TELOPT_OLD_ENVIRON, 1); /* turn off the old */
+ goto env_common;
+ case TELOPT_OLD_ENVIRON: /* Old environment variable option */
+ if (my_state_is_will(TELOPT_NEW_ENVIRON))
+ break; /* Don't enable if new one is in use! */
+ env_common:
+ telopt_environ = option;
+#endif
+ new_state_ok = 1;
+ break;
+
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+ if (autologin)
+ new_state_ok = 1;
+ break;
+#endif
+
+ case TELOPT_XDISPLOC: /* X Display location */
+ if (env_getvalue((unsigned char *)"DISPLAY"))
+ new_state_ok = 1;
+ break;
+
+ case TELOPT_LINEMODE:
+#ifdef KLUDGELINEMODE
+ kludgelinemode = 0;
+ send_do(TELOPT_SGA, 1);
+#endif
+ set_my_want_state_will(TELOPT_LINEMODE);
+ send_will(option, 0);
+ set_my_state_will(TELOPT_LINEMODE);
+ slc_init();
+ return;
+
+ case TELOPT_ECHO: /* We're never going to echo... */
+ default:
+ break;
+ }
+
+ if (new_state_ok) {
+ set_my_want_state_will(option);
+ send_will(option, 0);
+ setconnmode(0); /* Set new tty mode */
+ } else {
+ will_wont_resp[option]++;
+ send_wont(option, 0);
+ }
+ } else {
+ /*
+ * Handle options that need more things done after the
+ * other side has acknowledged the option.
+ */
+ switch (option) {
+ case TELOPT_LINEMODE:
+#ifdef KLUDGELINEMODE
+ kludgelinemode = 0;
+ send_do(TELOPT_SGA, 1);
+#endif
+ set_my_state_will(option);
+ slc_init();
+ send_do(TELOPT_SGA, 0);
+ return;
+ }
+ }
+ }
+ set_my_state_will(option);
+}
+
+ static void
+dontoption(option)
+ int option;
+{
+
+ if (will_wont_resp[option]) {
+ --will_wont_resp[option];
+ if (will_wont_resp[option] && my_state_is_wont(option))
+ --will_wont_resp[option];
+ }
+
+ if ((will_wont_resp[option] == 0) && my_want_state_is_will(option)) {
+ switch (option) {
+ case TELOPT_LINEMODE:
+ linemode = 0; /* put us back to the default state */
+ break;
+#ifdef OLD_ENVIRON
+ case TELOPT_NEW_ENVIRON:
+ /*
+ * The new environ option wasn't recognized, try
+ * the old one.
+ */
+ send_will(TELOPT_OLD_ENVIRON, 1);
+ telopt_environ = TELOPT_OLD_ENVIRON;
+ break;
+#endif
+ }
+ /* we always accept a DONT */
+ set_my_want_state_wont(option);
+ if (my_state_is_will(option))
+ send_wont(option, 0);
+ setconnmode(0); /* Set new tty mode */
+ }
+ set_my_state_wont(option);
+}
+
+/*
+ * Given a buffer returned by tgetent(), this routine will turn
+ * the pipe seperated list of names in the buffer into an array
+ * of pointers to null terminated names. We toss out any bad,
+ * duplicate, or verbose names (names with spaces).
+ */
+
+static char *name_unknown = "UNKNOWN";
+static char *unknown[] = { 0, 0 };
+
+ char **
+mklist(buf, name)
+ char *buf, *name;
+{
+ register int n;
+ register char c, *cp, **argvp, *cp2, **argv, **avt;
+
+ if (name) {
+ if ((int)strlen(name) > 40) {
+ name = 0;
+ unknown[0] = name_unknown;
+ } else {
+ unknown[0] = name;
+ upcase(name);
+ }
+ } else
+ unknown[0] = name_unknown;
+ /*
+ * Count up the number of names.
+ */
+ for (n = 1, cp = buf; *cp && *cp != ':'; cp++) {
+ if (*cp == '|')
+ n++;
+ }
+ /*
+ * Allocate an array to put the name pointers into
+ */
+ argv = (char **)malloc((n+3)*sizeof(char *));
+ if (argv == 0)
+ return(unknown);
+
+ /*
+ * Fill up the array of pointers to names.
+ */
+ *argv = 0;
+ argvp = argv+1;
+ n = 0;
+ for (cp = cp2 = buf; (c = *cp); cp++) {
+ if (c == '|' || c == ':') {
+ *cp++ = '\0';
+ /*
+ * Skip entries that have spaces or are over 40
+ * characters long. If this is our environment
+ * name, then put it up front. Otherwise, as
+ * long as this is not a duplicate name (case
+ * insensitive) add it to the list.
+ */
+ if (n || (cp - cp2 > 41))
+ ;
+ else if (name && (strncasecmp(name, cp2, cp-cp2) == 0))
+ *argv = cp2;
+ else if (is_unique(cp2, argv+1, argvp))
+ *argvp++ = cp2;
+ if (c == ':')
+ break;
+ /*
+ * Skip multiple delimiters. Reset cp2 to
+ * the beginning of the next name. Reset n,
+ * the flag for names with spaces.
+ */
+ while ((c = *cp) == '|')
+ cp++;
+ cp2 = cp;
+ n = 0;
+ }
+ /*
+ * Skip entries with spaces or non-ascii values.
+ * Convert lower case letters to upper case.
+ */
+ if ((c == ' ') || !isascii(c))
+ n = 1;
+ else if (islower(c))
+ *cp = toupper(c);
+ }
+
+ /*
+ * Check for an old V6 2 character name. If the second
+ * name points to the beginning of the buffer, and is
+ * only 2 characters long, move it to the end of the array.
+ */
+ if ((argv[1] == buf) && (strlen(argv[1]) == 2)) {
+ --argvp;
+ for (avt = &argv[1]; avt < argvp; avt++)
+ *avt = *(avt+1);
+ *argvp++ = buf;
+ }
+
+ /*
+ * Duplicate last name, for TTYPE option, and null
+ * terminate the array. If we didn't find a match on
+ * our terminal name, put that name at the beginning.
+ */
+ cp = *(argvp-1);
+ *argvp++ = cp;
+ *argvp = 0;
+
+ if (*argv == 0) {
+ if (name)
+ *argv = name;
+ else {
+ --argvp;
+ for (avt = argv; avt < argvp; avt++)
+ *avt = *(avt+1);
+ }
+ }
+ if (*argv)
+ return(argv);
+ else
+ return(unknown);
+}
+
+ int
+is_unique(name, as, ae)
+ register char *name, **as, **ae;
+{
+ register char **ap;
+ register int n;
+
+ n = strlen(name) + 1;
+ for (ap = as; ap < ae; ap++)
+ if (strncasecmp(*ap, name, n) == 0)
+ return(0);
+ return (1);
+}
+
+#ifdef TERMCAP
+char termbuf[1024];
+
+ /*ARGSUSED*/
+ int
+setupterm(tname, fd, errp)
+ char *tname;
+ int fd, *errp;
+{
+ if (tgetent(termbuf, tname) == 1) {
+ termbuf[1023] = '\0';
+ if (errp)
+ *errp = 1;
+ return(0);
+ }
+ if (errp)
+ *errp = 0;
+ return(-1);
+}
+#else
+#define termbuf ttytype
+extern char ttytype[];
+#endif
+
+int resettermname = 1;
+
+ char *
+gettermname()
+{
+ char *tname;
+ static char **tnamep = 0;
+ static char **next;
+ int err;
+
+ if (resettermname) {
+ resettermname = 0;
+ if (tnamep && tnamep != unknown)
+ free(tnamep);
+ if ((tname = (char *)env_getvalue((unsigned char *)"TERM")) &&
+ (setupterm(tname, 1, &err) == 0)) {
+ tnamep = mklist(termbuf, tname);
+ } else {
+ if (tname && ((int)strlen(tname) <= 40)) {
+ unknown[0] = tname;
+ upcase(tname);
+ } else
+ unknown[0] = name_unknown;
+ tnamep = unknown;
+ }
+ next = tnamep;
+ }
+ if (*next == 0)
+ next = tnamep;
+ return(*next++);
+}
+/*
+ * suboption()
+ *
+ * Look at the sub-option buffer, and try to be helpful to the other
+ * side.
+ *
+ * Currently we recognize:
+ *
+ * Terminal type, send request.
+ * Terminal speed (send request).
+ * Local flow control (is request).
+ * Linemode
+ */
+
+ static void
+suboption()
+{
+ unsigned char subchar;
+
+ printsub('<', subbuffer, SB_LEN()+2);
+ switch (subchar = SB_GET()) {
+ case TELOPT_TTYPE:
+ if (my_want_state_is_wont(TELOPT_TTYPE))
+ return;
+ if (SB_EOF() || SB_GET() != TELQUAL_SEND) {
+ return;
+ } else {
+ char *name;
+ unsigned char temp[50];
+ int len;
+
+#if defined(TN3270)
+ if (tn3270_ttype()) {
+ return;
+ }
+#endif /* defined(TN3270) */
+ name = gettermname();
+ len = strlen(name) + 4 + 2;
+ if (len < NETROOM()) {
+ sprintf((char *)temp, "%c%c%c%c%s%c%c", IAC, SB, TELOPT_TTYPE,
+ TELQUAL_IS, name, IAC, SE);
+ ring_supply_data(&netoring, temp, len);
+ printsub('>', &temp[2], len-2);
+ } else {
+ ExitString("No room in buffer for terminal type.\n", 1);
+ /*NOTREACHED*/
+ }
+ }
+ break;
+ case TELOPT_TSPEED:
+ if (my_want_state_is_wont(TELOPT_TSPEED))
+ return;
+ if (SB_EOF())
+ return;
+ if (SB_GET() == TELQUAL_SEND) {
+ long ospeed, ispeed;
+ unsigned char temp[50];
+ int len;
+
+ TerminalSpeeds(&ispeed, &ospeed);
+
+ sprintf((char *)temp, "%c%c%c%c%d,%d%c%c", IAC, SB, TELOPT_TSPEED,
+ TELQUAL_IS, ospeed, ispeed, IAC, SE);
+ len = strlen((char *)temp+4) + 4; /* temp[3] is 0 ... */
+
+ if (len < NETROOM()) {
+ ring_supply_data(&netoring, temp, len);
+ printsub('>', temp+2, len - 2);
+ }
+/*@*/ else printf("lm_will: not enough room in buffer\n");
+ }
+ break;
+ case TELOPT_LFLOW:
+ if (my_want_state_is_wont(TELOPT_LFLOW))
+ return;
+ if (SB_EOF())
+ return;
+ switch(SB_GET()) {
+ case LFLOW_RESTART_ANY:
+ restartany = 1;
+ break;
+ case LFLOW_RESTART_XON:
+ restartany = 0;
+ break;
+ case LFLOW_ON:
+ localflow = 1;
+ break;
+ case LFLOW_OFF:
+ localflow = 0;
+ break;
+ default:
+ return;
+ }
+ setcommandmode();
+ setconnmode(0);
+ break;
+
+ case TELOPT_LINEMODE:
+ if (my_want_state_is_wont(TELOPT_LINEMODE))
+ return;
+ if (SB_EOF())
+ return;
+ switch (SB_GET()) {
+ case WILL:
+ lm_will(subpointer, SB_LEN());
+ break;
+ case WONT:
+ lm_wont(subpointer, SB_LEN());
+ break;
+ case DO:
+ lm_do(subpointer, SB_LEN());
+ break;
+ case DONT:
+ lm_dont(subpointer, SB_LEN());
+ break;
+ case LM_SLC:
+ slc(subpointer, SB_LEN());
+ break;
+ case LM_MODE:
+ lm_mode(subpointer, SB_LEN(), 0);
+ break;
+ default:
+ break;
+ }
+ break;
+
+#ifdef OLD_ENVIRON
+ case TELOPT_OLD_ENVIRON:
+#endif
+ case TELOPT_NEW_ENVIRON:
+ if (SB_EOF())
+ return;
+ switch(SB_PEEK()) {
+ case TELQUAL_IS:
+ case TELQUAL_INFO:
+ if (my_want_state_is_dont(subchar))
+ return;
+ break;
+ case TELQUAL_SEND:
+ if (my_want_state_is_wont(subchar)) {
+ return;
+ }
+ break;
+ default:
+ return;
+ }
+ env_opt(subpointer, SB_LEN());
+ break;
+
+ case TELOPT_XDISPLOC:
+ if (my_want_state_is_wont(TELOPT_XDISPLOC))
+ return;
+ if (SB_EOF())
+ return;
+ if (SB_GET() == TELQUAL_SEND) {
+ unsigned char temp[50], *dp;
+ int len;
+
+ if ((dp = env_getvalue((unsigned char *)"DISPLAY")) == NULL) {
+ /*
+ * Something happened, we no longer have a DISPLAY
+ * variable. So, turn off the option.
+ */
+ send_wont(TELOPT_XDISPLOC, 1);
+ break;
+ }
+ sprintf((char *)temp, "%c%c%c%c%s%c%c", IAC, SB, TELOPT_XDISPLOC,
+ TELQUAL_IS, dp, IAC, SE);
+ len = strlen((char *)temp+4) + 4; /* temp[3] is 0 ... */
+
+ if (len < NETROOM()) {
+ ring_supply_data(&netoring, temp, len);
+ printsub('>', temp+2, len - 2);
+ }
+/*@*/ else printf("lm_will: not enough room in buffer\n");
+ }
+ break;
+
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION: {
+ if (!autologin)
+ break;
+ if (SB_EOF())
+ return;
+ switch(SB_GET()) {
+ case TELQUAL_IS:
+ if (my_want_state_is_dont(TELOPT_AUTHENTICATION))
+ return;
+ auth_is(subpointer, SB_LEN());
+ break;
+ case TELQUAL_SEND:
+ if (my_want_state_is_wont(TELOPT_AUTHENTICATION))
+ return;
+ auth_send(subpointer, SB_LEN());
+ break;
+ case TELQUAL_REPLY:
+ if (my_want_state_is_wont(TELOPT_AUTHENTICATION))
+ return;
+ auth_reply(subpointer, SB_LEN());
+ break;
+ case TELQUAL_NAME:
+ if (my_want_state_is_dont(TELOPT_AUTHENTICATION))
+ return;
+ auth_name(subpointer, SB_LEN());
+ break;
+ }
+ }
+ break;
+#endif
+#ifdef ENCRYPTION
+ case TELOPT_ENCRYPT:
+ if (SB_EOF())
+ return;
+ switch(SB_GET()) {
+ case ENCRYPT_START:
+ if (my_want_state_is_dont(TELOPT_ENCRYPT))
+ return;
+ encrypt_start(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_END:
+ if (my_want_state_is_dont(TELOPT_ENCRYPT))
+ return;
+ encrypt_end();
+ break;
+ case ENCRYPT_SUPPORT:
+ if (my_want_state_is_wont(TELOPT_ENCRYPT))
+ return;
+ encrypt_support(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_REQSTART:
+ if (my_want_state_is_wont(TELOPT_ENCRYPT))
+ return;
+ encrypt_request_start(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_REQEND:
+ if (my_want_state_is_wont(TELOPT_ENCRYPT))
+ return;
+ /*
+ * We can always send an REQEND so that we cannot
+ * get stuck encrypting. We should only get this
+ * if we have been able to get in the correct mode
+ * anyhow.
+ */
+ encrypt_request_end();
+ break;
+ case ENCRYPT_IS:
+ if (my_want_state_is_dont(TELOPT_ENCRYPT))
+ return;
+ encrypt_is(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_REPLY:
+ if (my_want_state_is_wont(TELOPT_ENCRYPT))
+ return;
+ encrypt_reply(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_ENC_KEYID:
+ if (my_want_state_is_dont(TELOPT_ENCRYPT))
+ return;
+ encrypt_enc_keyid(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_DEC_KEYID:
+ if (my_want_state_is_wont(TELOPT_ENCRYPT))
+ return;
+ encrypt_dec_keyid(subpointer, SB_LEN());
+ break;
+ default:
+ break;
+ }
+ break;
+#endif /* ENCRYPTION */
+ default:
+ break;
+ }
+}
+
+static unsigned char str_lm[] = { IAC, SB, TELOPT_LINEMODE, 0, 0, IAC, SE };
+
+ void
+lm_will(cmd, len)
+ unsigned char *cmd;
+ int len;
+{
+ if (len < 1) {
+/*@*/ printf("lm_will: no command!!!\n"); /* Should not happen... */
+ return;
+ }
+ switch(cmd[0]) {
+ case LM_FORWARDMASK: /* We shouldn't ever get this... */
+ default:
+ str_lm[3] = DONT;
+ str_lm[4] = cmd[0];
+ if (NETROOM() > sizeof(str_lm)) {
+ ring_supply_data(&netoring, str_lm, sizeof(str_lm));
+ printsub('>', &str_lm[2], sizeof(str_lm)-2);
+ }
+/*@*/ else printf("lm_will: not enough room in buffer\n");
+ break;
+ }
+}
+
+ void
+lm_wont(cmd, len)
+ unsigned char *cmd;
+ int len;
+{
+ if (len < 1) {
+/*@*/ printf("lm_wont: no command!!!\n"); /* Should not happen... */
+ return;
+ }
+ switch(cmd[0]) {
+ case LM_FORWARDMASK: /* We shouldn't ever get this... */
+ default:
+ /* We are always DONT, so don't respond */
+ return;
+ }
+}
+
+ void
+lm_do(cmd, len)
+ unsigned char *cmd;
+ int len;
+{
+ if (len < 1) {
+/*@*/ printf("lm_do: no command!!!\n"); /* Should not happen... */
+ return;
+ }
+ switch(cmd[0]) {
+ case LM_FORWARDMASK:
+ default:
+ str_lm[3] = WONT;
+ str_lm[4] = cmd[0];
+ if (NETROOM() > sizeof(str_lm)) {
+ ring_supply_data(&netoring, str_lm, sizeof(str_lm));
+ printsub('>', &str_lm[2], sizeof(str_lm)-2);
+ }
+/*@*/ else printf("lm_do: not enough room in buffer\n");
+ break;
+ }
+}
+
+ void
+lm_dont(cmd, len)
+ unsigned char *cmd;
+ int len;
+{
+ if (len < 1) {
+/*@*/ printf("lm_dont: no command!!!\n"); /* Should not happen... */
+ return;
+ }
+ switch(cmd[0]) {
+ case LM_FORWARDMASK:
+ default:
+ /* we are always WONT, so don't respond */
+ break;
+ }
+}
+
+static unsigned char str_lm_mode[] = {
+ IAC, SB, TELOPT_LINEMODE, LM_MODE, 0, IAC, SE
+};
+
+ void
+lm_mode(cmd, len, init)
+ unsigned char *cmd;
+ int len, init;
+{
+ if (len != 1)
+ return;
+ if ((linemode&MODE_MASK&~MODE_ACK) == *cmd)
+ return;
+ if (*cmd&MODE_ACK)
+ return;
+ linemode = *cmd&(MODE_MASK&~MODE_ACK);
+ str_lm_mode[4] = linemode;
+ if (!init)
+ str_lm_mode[4] |= MODE_ACK;
+ if (NETROOM() > sizeof(str_lm_mode)) {
+ ring_supply_data(&netoring, str_lm_mode, sizeof(str_lm_mode));
+ printsub('>', &str_lm_mode[2], sizeof(str_lm_mode)-2);
+ }
+/*@*/ else printf("lm_mode: not enough room in buffer\n");
+ setconnmode(0); /* set changed mode */
+}
+
+
+
+/*
+ * slc()
+ * Handle special character suboption of LINEMODE.
+ */
+
+struct spc {
+ cc_t val;
+ cc_t *valp;
+ char flags; /* Current flags & level */
+ char mylevel; /* Maximum level & flags */
+} spc_data[NSLC+1];
+
+#define SLC_IMPORT 0
+#define SLC_EXPORT 1
+#define SLC_RVALUE 2
+static int slc_mode = SLC_EXPORT;
+
+ void
+slc_init()
+{
+ register struct spc *spcp;
+
+ localchars = 1;
+ for (spcp = spc_data; spcp < &spc_data[NSLC+1]; spcp++) {
+ spcp->val = 0;
+ spcp->valp = 0;
+ spcp->flags = spcp->mylevel = SLC_NOSUPPORT;
+ }
+
+#define initfunc(func, flags) { \
+ spcp = &spc_data[func]; \
+ if (spcp->valp = tcval(func)) { \
+ spcp->val = *spcp->valp; \
+ spcp->mylevel = SLC_VARIABLE|flags; \
+ } else { \
+ spcp->val = 0; \
+ spcp->mylevel = SLC_DEFAULT; \
+ } \
+ }
+
+ initfunc(SLC_SYNCH, 0);
+ /* No BRK */
+ initfunc(SLC_AO, 0);
+ initfunc(SLC_AYT, 0);
+ /* No EOR */
+ initfunc(SLC_ABORT, SLC_FLUSHIN|SLC_FLUSHOUT);
+ initfunc(SLC_EOF, 0);
+#ifndef SYSV_TERMIO
+ initfunc(SLC_SUSP, SLC_FLUSHIN);
+#endif
+ initfunc(SLC_EC, 0);
+ initfunc(SLC_EL, 0);
+#ifndef SYSV_TERMIO
+ initfunc(SLC_EW, 0);
+ initfunc(SLC_RP, 0);
+ initfunc(SLC_LNEXT, 0);
+#endif
+ initfunc(SLC_XON, 0);
+ initfunc(SLC_XOFF, 0);
+#ifdef SYSV_TERMIO
+ spc_data[SLC_XON].mylevel = SLC_CANTCHANGE;
+ spc_data[SLC_XOFF].mylevel = SLC_CANTCHANGE;
+#endif
+ initfunc(SLC_FORW1, 0);
+#ifdef USE_TERMIO
+ initfunc(SLC_FORW2, 0);
+ /* No FORW2 */
+#endif
+
+ initfunc(SLC_IP, SLC_FLUSHIN|SLC_FLUSHOUT);
+#undef initfunc
+
+ if (slc_mode == SLC_EXPORT)
+ slc_export();
+ else
+ slc_import(1);
+
+}
+
+ void
+slcstate()
+{
+ printf("Special characters are %s values\n",
+ slc_mode == SLC_IMPORT ? "remote default" :
+ slc_mode == SLC_EXPORT ? "local" :
+ "remote");
+}
+
+ void
+slc_mode_export()
+{
+ slc_mode = SLC_EXPORT;
+ if (my_state_is_will(TELOPT_LINEMODE))
+ slc_export();
+}
+
+ void
+slc_mode_import(def)
+ int def;
+{
+ slc_mode = def ? SLC_IMPORT : SLC_RVALUE;
+ if (my_state_is_will(TELOPT_LINEMODE))
+ slc_import(def);
+}
+
+unsigned char slc_import_val[] = {
+ IAC, SB, TELOPT_LINEMODE, LM_SLC, 0, SLC_VARIABLE, 0, IAC, SE
+};
+unsigned char slc_import_def[] = {
+ IAC, SB, TELOPT_LINEMODE, LM_SLC, 0, SLC_DEFAULT, 0, IAC, SE
+};
+
+ void
+slc_import(def)
+ int def;
+{
+ if (NETROOM() > sizeof(slc_import_val)) {
+ if (def) {
+ ring_supply_data(&netoring, slc_import_def, sizeof(slc_import_def));
+ printsub('>', &slc_import_def[2], sizeof(slc_import_def)-2);
+ } else {
+ ring_supply_data(&netoring, slc_import_val, sizeof(slc_import_val));
+ printsub('>', &slc_import_val[2], sizeof(slc_import_val)-2);
+ }
+ }
+/*@*/ else printf("slc_import: not enough room\n");
+}
+
+ void
+slc_export()
+{
+ register struct spc *spcp;
+
+ TerminalDefaultChars();
+
+ slc_start_reply();
+ for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) {
+ if (spcp->mylevel != SLC_NOSUPPORT) {
+ if (spcp->val == (cc_t)(_POSIX_VDISABLE))
+ spcp->flags = SLC_NOSUPPORT;
+ else
+ spcp->flags = spcp->mylevel;
+ if (spcp->valp)
+ spcp->val = *spcp->valp;
+ slc_add_reply(spcp - spc_data, spcp->flags, spcp->val);
+ }
+ }
+ slc_end_reply();
+ (void)slc_update();
+ setconnmode(1); /* Make sure the character values are set */
+}
+
+ void
+slc(cp, len)
+ register unsigned char *cp;
+ int len;
+{
+ register struct spc *spcp;
+ register int func,level;
+
+ slc_start_reply();
+
+ for (; len >= 3; len -=3, cp +=3) {
+
+ func = cp[SLC_FUNC];
+
+ if (func == 0) {
+ /*
+ * Client side: always ignore 0 function.
+ */
+ continue;
+ }
+ if (func > NSLC) {
+ if ((cp[SLC_FLAGS] & SLC_LEVELBITS) != SLC_NOSUPPORT)
+ slc_add_reply(func, SLC_NOSUPPORT, 0);
+ continue;
+ }
+
+ spcp = &spc_data[func];
+
+ level = cp[SLC_FLAGS]&(SLC_LEVELBITS|SLC_ACK);
+
+ if ((cp[SLC_VALUE] == (unsigned char)spcp->val) &&
+ ((level&SLC_LEVELBITS) == (spcp->flags&SLC_LEVELBITS))) {
+ continue;
+ }
+
+ if (level == (SLC_DEFAULT|SLC_ACK)) {
+ /*
+ * This is an error condition, the SLC_ACK
+ * bit should never be set for the SLC_DEFAULT
+ * level. Our best guess to recover is to
+ * ignore the SLC_ACK bit.
+ */
+ cp[SLC_FLAGS] &= ~SLC_ACK;
+ }
+
+ if (level == ((spcp->flags&SLC_LEVELBITS)|SLC_ACK)) {
+ spcp->val = (cc_t)cp[SLC_VALUE];
+ spcp->flags = cp[SLC_FLAGS]; /* include SLC_ACK */
+ continue;
+ }
+
+ level &= ~SLC_ACK;
+
+ if (level <= (spcp->mylevel&SLC_LEVELBITS)) {
+ spcp->flags = cp[SLC_FLAGS]|SLC_ACK;
+ spcp->val = (cc_t)cp[SLC_VALUE];
+ }
+ if (level == SLC_DEFAULT) {
+ if ((spcp->mylevel&SLC_LEVELBITS) != SLC_DEFAULT)
+ spcp->flags = spcp->mylevel;
+ else
+ spcp->flags = SLC_NOSUPPORT;
+ }
+ slc_add_reply(func, spcp->flags, spcp->val);
+ }
+ slc_end_reply();
+ if (slc_update())
+ setconnmode(1); /* set the new character values */
+}
+
+ void
+slc_check()
+{
+ register struct spc *spcp;
+
+ slc_start_reply();
+ for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) {
+ if (spcp->valp && spcp->val != *spcp->valp) {
+ spcp->val = *spcp->valp;
+ if (spcp->val == (cc_t)(_POSIX_VDISABLE))
+ spcp->flags = SLC_NOSUPPORT;
+ else
+ spcp->flags = spcp->mylevel;
+ slc_add_reply(spcp - spc_data, spcp->flags, spcp->val);
+ }
+ }
+ slc_end_reply();
+ setconnmode(1);
+}
+
+
+unsigned char slc_reply[128];
+unsigned char *slc_replyp;
+
+ void
+slc_start_reply()
+{
+ slc_replyp = slc_reply;
+ *slc_replyp++ = IAC;
+ *slc_replyp++ = SB;
+ *slc_replyp++ = TELOPT_LINEMODE;
+ *slc_replyp++ = LM_SLC;
+}
+
+ void
+slc_add_reply(func, flags, value)
+ unsigned char func;
+ unsigned char flags;
+ cc_t value;
+{
+ if ((*slc_replyp++ = func) == IAC)
+ *slc_replyp++ = IAC;
+ if ((*slc_replyp++ = flags) == IAC)
+ *slc_replyp++ = IAC;
+ if ((*slc_replyp++ = (unsigned char)value) == IAC)
+ *slc_replyp++ = IAC;
+}
+
+ void
+slc_end_reply()
+{
+ register int len;
+
+ *slc_replyp++ = IAC;
+ *slc_replyp++ = SE;
+ len = slc_replyp - slc_reply;
+ if (len <= 6)
+ return;
+ if (NETROOM() > len) {
+ ring_supply_data(&netoring, slc_reply, slc_replyp - slc_reply);
+ printsub('>', &slc_reply[2], slc_replyp - slc_reply - 2);
+ }
+/*@*/else printf("slc_end_reply: not enough room\n");
+}
+
+ int
+slc_update()
+{
+ register struct spc *spcp;
+ int need_update = 0;
+
+ for (spcp = &spc_data[1]; spcp < &spc_data[NSLC+1]; spcp++) {
+ if (!(spcp->flags&SLC_ACK))
+ continue;
+ spcp->flags &= ~SLC_ACK;
+ if (spcp->valp && (*spcp->valp != spcp->val)) {
+ *spcp->valp = spcp->val;
+ need_update = 1;
+ }
+ }
+ return(need_update);
+}
+
+#ifdef OLD_ENVIRON
+# ifdef ENV_HACK
+/*
+ * Earlier version of telnet/telnetd from the BSD code had
+ * the definitions of VALUE and VAR reversed. To ensure
+ * maximum interoperability, we assume that the server is
+ * an older BSD server, until proven otherwise. The newer
+ * BSD servers should be able to handle either definition,
+ * so it is better to use the wrong values if we don't
+ * know what type of server it is.
+ */
+int env_auto = 1;
+int old_env_var = OLD_ENV_VAR;
+int old_env_value = OLD_ENV_VALUE;
+# else
+# define old_env_var OLD_ENV_VAR
+# define old_env_value OLD_ENV_VALUE
+# endif
+#endif
+
+ void
+env_opt(buf, len)
+ register unsigned char *buf;
+ register int len;
+{
+ register unsigned char *ep = 0, *epc = 0;
+ register int i;
+
+ switch(buf[0]&0xff) {
+ case TELQUAL_SEND:
+ env_opt_start();
+ if (len == 1) {
+ env_opt_add(NULL);
+ } else for (i = 1; i < len; i++) {
+ switch (buf[i]&0xff) {
+#ifdef OLD_ENVIRON
+ case OLD_ENV_VAR:
+# ifdef ENV_HACK
+ if (telopt_environ == TELOPT_OLD_ENVIRON
+ && env_auto) {
+ /* Server has the same definitions */
+ old_env_var = OLD_ENV_VAR;
+ old_env_value = OLD_ENV_VALUE;
+ }
+ /* FALL THROUGH */
+# endif
+ case OLD_ENV_VALUE:
+ /*
+ * Although OLD_ENV_VALUE is not legal, we will
+ * still recognize it, just in case it is an
+ * old server that has VAR & VALUE mixed up...
+ */
+ /* FALL THROUGH */
+#else
+ case NEW_ENV_VAR:
+#endif
+ case ENV_USERVAR:
+ if (ep) {
+ *epc = 0;
+ env_opt_add(ep);
+ }
+ ep = epc = &buf[i+1];
+ break;
+ case ENV_ESC:
+ i++;
+ /*FALL THROUGH*/
+ default:
+ if (epc)
+ *epc++ = buf[i];
+ break;
+ }
+ }
+ if (ep) {
+ *epc = 0;
+ env_opt_add(ep);
+ }
+ env_opt_end(1);
+ break;
+
+ case TELQUAL_IS:
+ case TELQUAL_INFO:
+ /* Ignore for now. We shouldn't get it anyway. */
+ break;
+
+ default:
+ break;
+ }
+}
+
+#define OPT_REPLY_SIZE 256
+unsigned char *opt_reply;
+unsigned char *opt_replyp;
+unsigned char *opt_replyend;
+
+ void
+env_opt_start()
+{
+ if (opt_reply)
+ opt_reply = (unsigned char *)realloc(opt_reply, OPT_REPLY_SIZE);
+ else
+ opt_reply = (unsigned char *)malloc(OPT_REPLY_SIZE);
+ if (opt_reply == NULL) {
+/*@*/ printf("env_opt_start: malloc()/realloc() failed!!!\n");
+ opt_reply = opt_replyp = opt_replyend = NULL;
+ return;
+ }
+ opt_replyp = opt_reply;
+ opt_replyend = opt_reply + OPT_REPLY_SIZE;
+ *opt_replyp++ = IAC;
+ *opt_replyp++ = SB;
+ *opt_replyp++ = telopt_environ;
+ *opt_replyp++ = TELQUAL_IS;
+}
+
+ void
+env_opt_start_info()
+{
+ env_opt_start();
+ if (opt_replyp)
+ opt_replyp[-1] = TELQUAL_INFO;
+}
+
+ void
+env_opt_add(ep)
+ register unsigned char *ep;
+{
+ register unsigned char *vp, c;
+
+ if (opt_reply == NULL) /*XXX*/
+ return; /*XXX*/
+
+ if (ep == NULL || *ep == '\0') {
+ /* Send user defined variables first. */
+ env_default(1, 0);
+ while (ep = env_default(0, 0))
+ env_opt_add(ep);
+
+ /* Now add the list of well know variables. */
+ env_default(1, 1);
+ while (ep = env_default(0, 1))
+ env_opt_add(ep);
+ return;
+ }
+ vp = env_getvalue(ep);
+ if (opt_replyp + (vp ? strlen((char *)vp) : 0) +
+ strlen((char *)ep) + 6 > opt_replyend)
+ {
+ register int len;
+ opt_replyend += OPT_REPLY_SIZE;
+ len = opt_replyend - opt_reply;
+ opt_reply = (unsigned char *)realloc(opt_reply, len);
+ if (opt_reply == NULL) {
+/*@*/ printf("env_opt_add: realloc() failed!!!\n");
+ opt_reply = opt_replyp = opt_replyend = NULL;
+ return;
+ }
+ opt_replyp = opt_reply + len - (opt_replyend - opt_replyp);
+ opt_replyend = opt_reply + len;
+ }
+ if (opt_welldefined(ep))
+#ifdef OLD_ENVIRON
+ if (telopt_environ == TELOPT_OLD_ENVIRON)
+ *opt_replyp++ = old_env_var;
+ else
+#endif
+ *opt_replyp++ = NEW_ENV_VAR;
+ else
+ *opt_replyp++ = ENV_USERVAR;
+ for (;;) {
+ while (c = *ep++) {
+ switch(c&0xff) {
+ case IAC:
+ *opt_replyp++ = IAC;
+ break;
+ case NEW_ENV_VAR:
+ case NEW_ENV_VALUE:
+ case ENV_ESC:
+ case ENV_USERVAR:
+ *opt_replyp++ = ENV_ESC;
+ break;
+ }
+ *opt_replyp++ = c;
+ }
+ if (ep = vp) {
+#ifdef OLD_ENVIRON
+ if (telopt_environ == TELOPT_OLD_ENVIRON)
+ *opt_replyp++ = old_env_value;
+ else
+#endif
+ *opt_replyp++ = NEW_ENV_VALUE;
+ vp = NULL;
+ } else
+ break;
+ }
+}
+
+ int
+opt_welldefined(ep)
+ char *ep;
+{
+ if ((strcmp(ep, "USER") == 0) ||
+ (strcmp(ep, "DISPLAY") == 0) ||
+ (strcmp(ep, "PRINTER") == 0) ||
+ (strcmp(ep, "SYSTEMTYPE") == 0) ||
+ (strcmp(ep, "JOB") == 0) ||
+ (strcmp(ep, "ACCT") == 0))
+ return(1);
+ return(0);
+}
+ void
+env_opt_end(emptyok)
+ register int emptyok;
+{
+ register int len;
+
+ len = opt_replyp - opt_reply + 2;
+ if (emptyok || len > 6) {
+ *opt_replyp++ = IAC;
+ *opt_replyp++ = SE;
+ if (NETROOM() > len) {
+ ring_supply_data(&netoring, opt_reply, len);
+ printsub('>', &opt_reply[2], len - 2);
+ }
+/*@*/ else printf("slc_end_reply: not enough room\n");
+ }
+ if (opt_reply) {
+ free(opt_reply);
+ opt_reply = opt_replyp = opt_replyend = NULL;
+ }
+}
+
+
+
+ int
+telrcv()
+{
+ register int c;
+ register int scc;
+ register unsigned char *sbp;
+ int count;
+ int returnValue = 0;
+
+ scc = 0;
+ count = 0;
+ while (TTYROOM() > 2) {
+ if (scc == 0) {
+ if (count) {
+ ring_consumed(&netiring, count);
+ returnValue = 1;
+ count = 0;
+ }
+ sbp = netiring.consume;
+ scc = ring_full_consecutive(&netiring);
+ if (scc == 0) {
+ /* No more data coming in */
+ break;
+ }
+ }
+
+ c = *sbp++ & 0xff, scc--; count++;
+#ifdef ENCRYPTION
+ if (decrypt_input)
+ c = (*decrypt_input)(c);
+#endif /* ENCRYPTION */
+
+ switch (telrcv_state) {
+
+ case TS_CR:
+ telrcv_state = TS_DATA;
+ if (c == '\0') {
+ break; /* Ignore \0 after CR */
+ }
+ else if ((c == '\n') && my_want_state_is_dont(TELOPT_ECHO) && !crmod) {
+ TTYADD(c);
+ break;
+ }
+ /* Else, fall through */
+
+ case TS_DATA:
+ if (c == IAC) {
+ telrcv_state = TS_IAC;
+ break;
+ }
+# if defined(TN3270)
+ if (In3270) {
+ *Ifrontp++ = c;
+ while (scc > 0) {
+ c = *sbp++ & 0377, scc--; count++;
+#ifdef ENCRYPTION
+ if (decrypt_input)
+ c = (*decrypt_input)(c);
+#endif /* ENCRYPTION */
+ if (c == IAC) {
+ telrcv_state = TS_IAC;
+ break;
+ }
+ *Ifrontp++ = c;
+ }
+ } else
+# endif /* defined(TN3270) */
+ /*
+ * The 'crmod' hack (see following) is needed
+ * since we can't * set CRMOD on output only.
+ * Machines like MULTICS like to send \r without
+ * \n; since we must turn off CRMOD to get proper
+ * input, the mapping is done here (sigh).
+ */
+ if ((c == '\r') && my_want_state_is_dont(TELOPT_BINARY)) {
+ if (scc > 0) {
+ c = *sbp&0xff;
+#ifdef ENCRYPTION
+ if (decrypt_input)
+ c = (*decrypt_input)(c);
+#endif /* ENCRYPTION */
+ if (c == 0) {
+ sbp++, scc--; count++;
+ /* a "true" CR */
+ TTYADD('\r');
+ } else if (my_want_state_is_dont(TELOPT_ECHO) &&
+ (c == '\n')) {
+ sbp++, scc--; count++;
+ TTYADD('\n');
+ } else {
+#ifdef ENCRYPTION
+ if (decrypt_input)
+ (*decrypt_input)(-1);
+#endif /* ENCRYPTION */
+
+ TTYADD('\r');
+ if (crmod) {
+ TTYADD('\n');
+ }
+ }
+ } else {
+ telrcv_state = TS_CR;
+ TTYADD('\r');
+ if (crmod) {
+ TTYADD('\n');
+ }
+ }
+ } else {
+ TTYADD(c);
+ }
+ continue;
+
+ case TS_IAC:
+process_iac:
+ switch (c) {
+
+ case WILL:
+ telrcv_state = TS_WILL;
+ continue;
+
+ case WONT:
+ telrcv_state = TS_WONT;
+ continue;
+
+ case DO:
+ telrcv_state = TS_DO;
+ continue;
+
+ case DONT:
+ telrcv_state = TS_DONT;
+ continue;
+
+ case DM:
+ /*
+ * We may have missed an urgent notification,
+ * so make sure we flush whatever is in the
+ * buffer currently.
+ */
+ printoption("RCVD", IAC, DM);
+ SYNCHing = 1;
+ (void) ttyflush(1);
+ SYNCHing = stilloob();
+ settimer(gotDM);
+ break;
+
+ case SB:
+ SB_CLEAR();
+ telrcv_state = TS_SB;
+ continue;
+
+# if defined(TN3270)
+ case EOR:
+ if (In3270) {
+ if (Ibackp == Ifrontp) {
+ Ibackp = Ifrontp = Ibuf;
+ ISend = 0; /* should have been! */
+ } else {
+ Ibackp += DataFromNetwork(Ibackp, Ifrontp-Ibackp, 1);
+ ISend = 1;
+ }
+ }
+ printoption("RCVD", IAC, EOR);
+ break;
+# endif /* defined(TN3270) */
+
+ case IAC:
+# if !defined(TN3270)
+ TTYADD(IAC);
+# else /* !defined(TN3270) */
+ if (In3270) {
+ *Ifrontp++ = IAC;
+ } else {
+ TTYADD(IAC);
+ }
+# endif /* !defined(TN3270) */
+ break;
+
+ case NOP:
+ case GA:
+ default:
+ printoption("RCVD", IAC, c);
+ break;
+ }
+ telrcv_state = TS_DATA;
+ continue;
+
+ case TS_WILL:
+ printoption("RCVD", WILL, c);
+ willoption(c);
+ SetIn3270();
+ telrcv_state = TS_DATA;
+ continue;
+
+ case TS_WONT:
+ printoption("RCVD", WONT, c);
+ wontoption(c);
+ SetIn3270();
+ telrcv_state = TS_DATA;
+ continue;
+
+ case TS_DO:
+ printoption("RCVD", DO, c);
+ dooption(c);
+ SetIn3270();
+ if (c == TELOPT_NAWS) {
+ sendnaws();
+ } else if (c == TELOPT_LFLOW) {
+ localflow = 1;
+ setcommandmode();
+ setconnmode(0);
+ }
+ telrcv_state = TS_DATA;
+ continue;
+
+ case TS_DONT:
+ printoption("RCVD", DONT, c);
+ dontoption(c);
+ flushline = 1;
+ setconnmode(0); /* set new tty mode (maybe) */
+ SetIn3270();
+ telrcv_state = TS_DATA;
+ continue;
+
+ case TS_SB:
+ if (c == IAC) {
+ telrcv_state = TS_SE;
+ } else {
+ SB_ACCUM(c);
+ }
+ continue;
+
+ case TS_SE:
+ if (c != SE) {
+ if (c != IAC) {
+ /*
+ * This is an error. We only expect to get
+ * "IAC IAC" or "IAC SE". Several things may
+ * have happend. An IAC was not doubled, the
+ * IAC SE was left off, or another option got
+ * inserted into the suboption are all possibilities.
+ * If we assume that the IAC was not doubled,
+ * and really the IAC SE was left off, we could
+ * get into an infinate loop here. So, instead,
+ * we terminate the suboption, and process the
+ * partial suboption if we can.
+ */
+ SB_ACCUM(IAC);
+ SB_ACCUM(c);
+ subpointer -= 2;
+ SB_TERM();
+
+ printoption("In SUBOPTION processing, RCVD", IAC, c);
+ suboption(); /* handle sub-option */
+ SetIn3270();
+ telrcv_state = TS_IAC;
+ goto process_iac;
+ }
+ SB_ACCUM(c);
+ telrcv_state = TS_SB;
+ } else {
+ SB_ACCUM(IAC);
+ SB_ACCUM(SE);
+ subpointer -= 2;
+ SB_TERM();
+ suboption(); /* handle sub-option */
+ SetIn3270();
+ telrcv_state = TS_DATA;
+ }
+ }
+ }
+ if (count)
+ ring_consumed(&netiring, count);
+ return returnValue||count;
+}
+
+static int bol = 1, local = 0;
+
+ int
+rlogin_susp()
+{
+ if (local) {
+ local = 0;
+ bol = 1;
+ command(0, "z\n", 2);
+ return(1);
+ }
+ return(0);
+}
+
+ static int
+telsnd()
+{
+ int tcc;
+ int count;
+ int returnValue = 0;
+ unsigned char *tbp;
+
+ tcc = 0;
+ count = 0;
+ while (NETROOM() > 2) {
+ register int sc;
+ register int c;
+
+ if (tcc == 0) {
+ if (count) {
+ ring_consumed(&ttyiring, count);
+ returnValue = 1;
+ count = 0;
+ }
+ tbp = ttyiring.consume;
+ tcc = ring_full_consecutive(&ttyiring);
+ if (tcc == 0) {
+ break;
+ }
+ }
+ c = *tbp++ & 0xff, sc = strip(c), tcc--; count++;
+ if (rlogin != _POSIX_VDISABLE) {
+ if (bol) {
+ bol = 0;
+ if (sc == rlogin) {
+ local = 1;
+ continue;
+ }
+ } else if (local) {
+ local = 0;
+ if (sc == '.' || c == termEofChar) {
+ bol = 1;
+ command(0, "close\n", 6);
+ continue;
+ }
+ if (sc == termSuspChar) {
+ bol = 1;
+ command(0, "z\n", 2);
+ continue;
+ }
+ if (sc == escape) {
+ command(0, (char *)tbp, tcc);
+ bol = 1;
+ count += tcc;
+ tcc = 0;
+ flushline = 1;
+ break;
+ }
+ if (sc != rlogin) {
+ ++tcc;
+ --tbp;
+ --count;
+ c = sc = rlogin;
+ }
+ }
+ if ((sc == '\n') || (sc == '\r'))
+ bol = 1;
+ } else if (sc == escape) {
+ /*
+ * Double escape is a pass through of a single escape character.
+ */
+ if (tcc && strip(*tbp) == escape) {
+ tbp++;
+ tcc--;
+ count++;
+ bol = 0;
+ } else {
+ command(0, (char *)tbp, tcc);
+ bol = 1;
+ count += tcc;
+ tcc = 0;
+ flushline = 1;
+ break;
+ }
+ } else
+ bol = 0;
+#ifdef KLUDGELINEMODE
+ if (kludgelinemode && (globalmode&MODE_EDIT) && (sc == echoc)) {
+ if (tcc > 0 && strip(*tbp) == echoc) {
+ tcc--; tbp++; count++;
+ } else {
+ dontlecho = !dontlecho;
+ settimer(echotoggle);
+ setconnmode(0);
+ flushline = 1;
+ break;
+ }
+ }
+#endif
+ if (MODE_LOCAL_CHARS(globalmode)) {
+ if (TerminalSpecialChars(sc) == 0) {
+ bol = 1;
+ break;
+ }
+ }
+ if (my_want_state_is_wont(TELOPT_BINARY)) {
+ switch (c) {
+ case '\n':
+ /*
+ * If we are in CRMOD mode (\r ==> \n)
+ * on our local machine, then probably
+ * a newline (unix) is CRLF (TELNET).
+ */
+ if (MODE_LOCAL_CHARS(globalmode)) {
+ NETADD('\r');
+ }
+ NETADD('\n');
+ bol = flushline = 1;
+ break;
+ case '\r':
+ if (!crlf) {
+ NET2ADD('\r', '\0');
+ } else {
+ NET2ADD('\r', '\n');
+ }
+ bol = flushline = 1;
+ break;
+ case IAC:
+ NET2ADD(IAC, IAC);
+ break;
+ default:
+ NETADD(c);
+ break;
+ }
+ } else if (c == IAC) {
+ NET2ADD(IAC, IAC);
+ } else {
+ NETADD(c);
+ }
+ }
+ if (count)
+ ring_consumed(&ttyiring, count);
+ return returnValue||count; /* Non-zero if we did anything */
+}
+
+/*
+ * Scheduler()
+ *
+ * Try to do something.
+ *
+ * If we do something useful, return 1; else return 0.
+ *
+ */
+
+
+ int
+Scheduler(block)
+ int block; /* should we block in the select ? */
+{
+ /* One wants to be a bit careful about setting returnValue
+ * to one, since a one implies we did some useful work,
+ * and therefore probably won't be called to block next
+ * time (TN3270 mode only).
+ */
+ int returnValue;
+ int netin, netout, netex, ttyin, ttyout;
+
+ /* Decide which rings should be processed */
+
+ netout = ring_full_count(&netoring) &&
+ (flushline ||
+ (my_want_state_is_wont(TELOPT_LINEMODE)
+#ifdef KLUDGELINEMODE
+ && (!kludgelinemode || my_want_state_is_do(TELOPT_SGA))
+#endif
+ ) ||
+ my_want_state_is_will(TELOPT_BINARY));
+ ttyout = ring_full_count(&ttyoring);
+
+#if defined(TN3270)
+ ttyin = ring_empty_count(&ttyiring) && (shell_active == 0);
+#else /* defined(TN3270) */
+ ttyin = ring_empty_count(&ttyiring);
+#endif /* defined(TN3270) */
+
+#if defined(TN3270)
+ netin = ring_empty_count(&netiring);
+# else /* !defined(TN3270) */
+ netin = !ISend && ring_empty_count(&netiring);
+# endif /* !defined(TN3270) */
+
+ netex = !SYNCHing;
+
+ /* If we have seen a signal recently, reset things */
+# if defined(TN3270) && defined(unix)
+ if (HaveInput) {
+ HaveInput = 0;
+ (void) signal(SIGIO, inputAvailable);
+ }
+#endif /* defined(TN3270) && defined(unix) */
+
+ /* Call to system code to process rings */
+
+ returnValue = process_rings(netin, netout, netex, ttyin, ttyout, !block);
+
+ /* Now, look at the input rings, looking for work to do. */
+
+ if (ring_full_count(&ttyiring)) {
+# if defined(TN3270)
+ if (In3270) {
+ int c;
+
+ c = DataFromTerminal(ttyiring.consume,
+ ring_full_consecutive(&ttyiring));
+ if (c) {
+ returnValue = 1;
+ ring_consumed(&ttyiring, c);
+ }
+ } else {
+# endif /* defined(TN3270) */
+ returnValue |= telsnd();
+# if defined(TN3270)
+ }
+# endif /* defined(TN3270) */
+ }
+
+ if (ring_full_count(&netiring)) {
+# if !defined(TN3270)
+ returnValue |= telrcv();
+# else /* !defined(TN3270) */
+ returnValue = Push3270();
+# endif /* !defined(TN3270) */
+ }
+ return returnValue;
+}
+
+/*
+ * Select from tty and network...
+ */
+ void
+telnet(user)
+ char *user;
+{
+ sys_telnet_init();
+
+#if defined(AUTHENTICATION) || defined(ENCRYPTION)
+ {
+ static char local_host[256] = { 0 };
+
+ if (!local_host[0]) {
+ gethostname(local_host, sizeof(local_host));
+ local_host[sizeof(local_host)-1] = 0;
+ }
+ auth_encrypt_init(local_host, hostname, "TELNET", 0);
+ auth_encrypt_user(user);
+ }
+#endif /* defined(AUTHENTICATION) || defined(ENCRYPTION) */
+# if !defined(TN3270)
+ if (telnetport) {
+#if defined(AUTHENTICATION)
+ if (autologin)
+ send_will(TELOPT_AUTHENTICATION, 1);
+#endif
+#ifdef ENCRYPTION
+ send_do(TELOPT_ENCRYPT, 1);
+ send_will(TELOPT_ENCRYPT, 1);
+#endif /* ENCRYPTION */
+ send_do(TELOPT_SGA, 1);
+ send_will(TELOPT_TTYPE, 1);
+ send_will(TELOPT_NAWS, 1);
+ send_will(TELOPT_TSPEED, 1);
+ send_will(TELOPT_LFLOW, 1);
+ send_will(TELOPT_LINEMODE, 1);
+ send_will(TELOPT_NEW_ENVIRON, 1);
+ send_do(TELOPT_STATUS, 1);
+ if (env_getvalue((unsigned char *)"DISPLAY"))
+ send_will(TELOPT_XDISPLOC, 1);
+ if (eight)
+ tel_enter_binary(eight);
+ }
+# endif /* !defined(TN3270) */
+
+# if !defined(TN3270)
+ for (;;) {
+ int schedValue;
+
+ while ((schedValue = Scheduler(0)) != 0) {
+ if (schedValue == -1) {
+ setcommandmode();
+ return;
+ }
+ }
+
+ if (Scheduler(1) == -1) {
+ setcommandmode();
+ return;
+ }
+ }
+# else /* !defined(TN3270) */
+ for (;;) {
+ int schedValue;
+
+ while (!In3270 && !shell_active) {
+ if (Scheduler(1) == -1) {
+ setcommandmode();
+ return;
+ }
+ }
+
+ while ((schedValue = Scheduler(0)) != 0) {
+ if (schedValue == -1) {
+ setcommandmode();
+ return;
+ }
+ }
+ /* If there is data waiting to go out to terminal, don't
+ * schedule any more data for the terminal.
+ */
+ if (ring_full_count(&ttyoring)) {
+ schedValue = 1;
+ } else {
+ if (shell_active) {
+ if (shell_continue() == 0) {
+ ConnectScreen();
+ }
+ } else if (In3270) {
+ schedValue = DoTerminalOutput();
+ }
+ }
+ if (schedValue && (shell_active == 0)) {
+ if (Scheduler(1) == -1) {
+ setcommandmode();
+ return;
+ }
+ }
+ }
+# endif /* !defined(TN3270) */
+}
+
+#if 0 /* XXX - this not being in is a bug */
+/*
+ * nextitem()
+ *
+ * Return the address of the next "item" in the TELNET data
+ * stream. This will be the address of the next character if
+ * the current address is a user data character, or it will
+ * be the address of the character following the TELNET command
+ * if the current address is a TELNET IAC ("I Am a Command")
+ * character.
+ */
+
+ static char *
+nextitem(current)
+ char *current;
+{
+ if ((*current&0xff) != IAC) {
+ return current+1;
+ }
+ switch (*(current+1)&0xff) {
+ case DO:
+ case DONT:
+ case WILL:
+ case WONT:
+ return current+3;
+ case SB: /* loop forever looking for the SE */
+ {
+ register char *look = current+2;
+
+ for (;;) {
+ if ((*look++&0xff) == IAC) {
+ if ((*look++&0xff) == SE) {
+ return look;
+ }
+ }
+ }
+ }
+ default:
+ return current+2;
+ }
+}
+#endif /* 0 */
+
+/*
+ * netclear()
+ *
+ * We are about to do a TELNET SYNCH operation. Clear
+ * the path to the network.
+ *
+ * Things are a bit tricky since we may have sent the first
+ * byte or so of a previous TELNET command into the network.
+ * So, we have to scan the network buffer from the beginning
+ * until we are up to where we want to be.
+ *
+ * A side effect of what we do, just to keep things
+ * simple, is to clear the urgent data pointer. The principal
+ * caller should be setting the urgent data pointer AFTER calling
+ * us in any case.
+ */
+
+ static void
+netclear()
+{
+#if 0 /* XXX */
+ register char *thisitem, *next;
+ char *good;
+#define wewant(p) ((nfrontp > p) && ((*p&0xff) == IAC) && \
+ ((*(p+1)&0xff) != EC) && ((*(p+1)&0xff) != EL))
+
+ thisitem = netobuf;
+
+ while ((next = nextitem(thisitem)) <= netobuf.send) {
+ thisitem = next;
+ }
+
+ /* Now, thisitem is first before/at boundary. */
+
+ good = netobuf; /* where the good bytes go */
+
+ while (netoring.add > thisitem) {
+ if (wewant(thisitem)) {
+ int length;
+
+ next = thisitem;
+ do {
+ next = nextitem(next);
+ } while (wewant(next) && (nfrontp > next));
+ length = next-thisitem;
+ memmove(good, thisitem, length);
+ good += length;
+ thisitem = next;
+ } else {
+ thisitem = nextitem(thisitem);
+ }
+ }
+
+#endif /* 0 */
+}
+
+/*
+ * These routines add various telnet commands to the data stream.
+ */
+
+ static void
+doflush()
+{
+ NET2ADD(IAC, DO);
+ NETADD(TELOPT_TM);
+ flushline = 1;
+ flushout = 1;
+ (void) ttyflush(1); /* Flush/drop output */
+ /* do printoption AFTER flush, otherwise the output gets tossed... */
+ printoption("SENT", DO, TELOPT_TM);
+}
+
+ void
+xmitAO()
+{
+ NET2ADD(IAC, AO);
+ printoption("SENT", IAC, AO);
+ if (autoflush) {
+ doflush();
+ }
+}
+
+
+ void
+xmitEL()
+{
+ NET2ADD(IAC, EL);
+ printoption("SENT", IAC, EL);
+}
+
+ void
+xmitEC()
+{
+ NET2ADD(IAC, EC);
+ printoption("SENT", IAC, EC);
+}
+
+
+ int
+dosynch()
+{
+ netclear(); /* clear the path to the network */
+ NETADD(IAC);
+ setneturg();
+ NETADD(DM);
+ printoption("SENT", IAC, DM);
+ return 1;
+}
+
+int want_status_response = 0;
+
+ int
+get_status()
+{
+ unsigned char tmp[16];
+ register unsigned char *cp;
+
+ if (my_want_state_is_dont(TELOPT_STATUS)) {
+ printf("Remote side does not support STATUS option\n");
+ return 0;
+ }
+ cp = tmp;
+
+ *cp++ = IAC;
+ *cp++ = SB;
+ *cp++ = TELOPT_STATUS;
+ *cp++ = TELQUAL_SEND;
+ *cp++ = IAC;
+ *cp++ = SE;
+ if (NETROOM() >= cp - tmp) {
+ ring_supply_data(&netoring, tmp, cp-tmp);
+ printsub('>', tmp+2, cp - tmp - 2);
+ }
+ ++want_status_response;
+ return 1;
+}
+
+ void
+intp()
+{
+ NET2ADD(IAC, IP);
+ printoption("SENT", IAC, IP);
+ flushline = 1;
+ if (autoflush) {
+ doflush();
+ }
+ if (autosynch) {
+ dosynch();
+ }
+}
+
+ void
+sendbrk()
+{
+ NET2ADD(IAC, BREAK);
+ printoption("SENT", IAC, BREAK);
+ flushline = 1;
+ if (autoflush) {
+ doflush();
+ }
+ if (autosynch) {
+ dosynch();
+ }
+}
+
+ void
+sendabort()
+{
+ NET2ADD(IAC, ABORT);
+ printoption("SENT", IAC, ABORT);
+ flushline = 1;
+ if (autoflush) {
+ doflush();
+ }
+ if (autosynch) {
+ dosynch();
+ }
+}
+
+ void
+sendsusp()
+{
+ NET2ADD(IAC, SUSP);
+ printoption("SENT", IAC, SUSP);
+ flushline = 1;
+ if (autoflush) {
+ doflush();
+ }
+ if (autosynch) {
+ dosynch();
+ }
+}
+
+ void
+sendeof()
+{
+ NET2ADD(IAC, xEOF);
+ printoption("SENT", IAC, xEOF);
+}
+
+ void
+sendayt()
+{
+ NET2ADD(IAC, AYT);
+ printoption("SENT", IAC, AYT);
+}
+
+/*
+ * Send a window size update to the remote system.
+ */
+
+ void
+sendnaws()
+{
+ long rows, cols;
+ unsigned char tmp[16];
+ register unsigned char *cp;
+
+ if (my_state_is_wont(TELOPT_NAWS))
+ return;
+
+#define PUTSHORT(cp, x) { if ((*cp++ = ((x)>>8)&0xff) == IAC) *cp++ = IAC; \
+ if ((*cp++ = ((x))&0xff) == IAC) *cp++ = IAC; }
+
+ if (TerminalWindowSize(&rows, &cols) == 0) { /* Failed */
+ return;
+ }
+
+ cp = tmp;
+
+ *cp++ = IAC;
+ *cp++ = SB;
+ *cp++ = TELOPT_NAWS;
+ PUTSHORT(cp, cols);
+ PUTSHORT(cp, rows);
+ *cp++ = IAC;
+ *cp++ = SE;
+ if (NETROOM() >= cp - tmp) {
+ ring_supply_data(&netoring, tmp, cp-tmp);
+ printsub('>', tmp+2, cp - tmp - 2);
+ }
+}
+
+ void
+tel_enter_binary(rw)
+ int rw;
+{
+ if (rw&1)
+ send_do(TELOPT_BINARY, 1);
+ if (rw&2)
+ send_will(TELOPT_BINARY, 1);
+}
+
+ void
+tel_leave_binary(rw)
+ int rw;
+{
+ if (rw&1)
+ send_dont(TELOPT_BINARY, 1);
+ if (rw&2)
+ send_wont(TELOPT_BINARY, 1);
+}
diff --git a/contrib/telnet/telnet/terminal.c b/contrib/telnet/telnet/terminal.c
new file mode 100644
index 0000000..b5ceeda
--- /dev/null
+++ b/contrib/telnet/telnet/terminal.c
@@ -0,0 +1,240 @@
+/*
+ * Copyright (c) 1988, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)terminal.c 8.2 (Berkeley) 2/16/95";
+#endif /* not lint */
+
+#include <arpa/telnet.h>
+#include <sys/types.h>
+
+#include "ring.h"
+
+#include "externs.h"
+#include "types.h"
+
+Ring ttyoring, ttyiring;
+unsigned char ttyobuf[2*BUFSIZ], ttyibuf[BUFSIZ];
+
+int termdata; /* Debugging flag */
+
+#ifdef USE_TERMIO
+# ifndef VDISCARD
+cc_t termFlushChar;
+# endif
+# ifndef VLNEXT
+cc_t termLiteralNextChar;
+# endif
+# ifndef VSUSP
+cc_t termSuspChar;
+# endif
+# ifndef VWERASE
+cc_t termWerasChar;
+# endif
+# ifndef VREPRINT
+cc_t termRprntChar;
+# endif
+# ifndef VSTART
+cc_t termStartChar;
+# endif
+# ifndef VSTOP
+cc_t termStopChar;
+# endif
+# ifndef VEOL
+cc_t termForw1Char;
+# endif
+# ifndef VEOL2
+cc_t termForw2Char;
+# endif
+# ifndef VSTATUS
+cc_t termAytChar;
+# endif
+#else
+cc_t termForw2Char;
+cc_t termAytChar;
+#endif
+
+/*
+ * initialize the terminal data structures.
+ */
+
+ void
+init_terminal()
+{
+ if (ring_init(&ttyoring, ttyobuf, sizeof ttyobuf) != 1) {
+ exit(1);
+ }
+ if (ring_init(&ttyiring, ttyibuf, sizeof ttyibuf) != 1) {
+ exit(1);
+ }
+ autoflush = TerminalAutoFlush();
+}
+
+
+/*
+ * Send as much data as possible to the terminal.
+ *
+ * Return value:
+ * -1: No useful work done, data waiting to go out.
+ * 0: No data was waiting, so nothing was done.
+ * 1: All waiting data was written out.
+ * n: All data - n was written out.
+ */
+
+
+ int
+ttyflush(drop)
+ int drop;
+{
+ register int n, n0, n1;
+
+ n0 = ring_full_count(&ttyoring);
+ if ((n1 = n = ring_full_consecutive(&ttyoring)) > 0) {
+ if (drop) {
+ TerminalFlushOutput();
+ /* we leave 'n' alone! */
+ } else {
+ n = TerminalWrite(ttyoring.consume, n);
+ }
+ }
+ if (n > 0) {
+ if (termdata && n) {
+ Dump('>', ttyoring.consume, n);
+ }
+ /*
+ * If we wrote everything, and the full count is
+ * larger than what we wrote, then write the
+ * rest of the buffer.
+ */
+ if (n1 == n && n0 > n) {
+ n1 = n0 - n;
+ if (!drop)
+ n1 = TerminalWrite(ttyoring.bottom, n1);
+ if (n1 > 0)
+ n += n1;
+ }
+ ring_consumed(&ttyoring, n);
+ }
+ if (n < 0)
+ return -1;
+ if (n == n0) {
+ if (n0)
+ return -1;
+ return 0;
+ }
+ return n0 - n + 1;
+}
+
+
+/*
+ * These routines decides on what the mode should be (based on the values
+ * of various global variables).
+ */
+
+
+ int
+getconnmode()
+{
+ extern int linemode;
+ int mode = 0;
+#ifdef KLUDGELINEMODE
+ extern int kludgelinemode;
+#endif
+
+ if (In3270)
+ return(MODE_FLOW);
+
+ if (my_want_state_is_dont(TELOPT_ECHO))
+ mode |= MODE_ECHO;
+
+ if (localflow)
+ mode |= MODE_FLOW;
+
+ if (my_want_state_is_will(TELOPT_BINARY))
+ mode |= MODE_INBIN;
+
+ if (his_want_state_is_will(TELOPT_BINARY))
+ mode |= MODE_OUTBIN;
+
+#ifdef KLUDGELINEMODE
+ if (kludgelinemode) {
+ if (my_want_state_is_dont(TELOPT_SGA)) {
+ mode |= (MODE_TRAPSIG|MODE_EDIT);
+ if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) {
+ mode &= ~MODE_ECHO;
+ }
+ }
+ return(mode);
+ }
+#endif
+ if (my_want_state_is_will(TELOPT_LINEMODE))
+ mode |= linemode;
+ return(mode);
+}
+
+ void
+setconnmode(force)
+ int force;
+{
+#ifdef ENCRYPTION
+ static int enc_passwd = 0;
+#endif /* ENCRYPTION */
+ register int newmode;
+
+ newmode = getconnmode()|(force?MODE_FORCE:0);
+
+ TerminalNewMode(newmode);
+
+#ifdef ENCRYPTION
+ if ((newmode & (MODE_ECHO|MODE_EDIT)) == MODE_EDIT) {
+ if (my_want_state_is_will(TELOPT_ENCRYPT)
+ && (enc_passwd == 0) && !encrypt_output) {
+ encrypt_request_start(0, 0);
+ enc_passwd = 1;
+ }
+ } else {
+ if (enc_passwd) {
+ encrypt_request_end();
+ enc_passwd = 0;
+ }
+ }
+#endif /* ENCRYPTION */
+
+}
+
+
+ void
+setcommandmode()
+{
+ TerminalNewMode(-1);
+}
diff --git a/contrib/telnet/telnet/tn3270.c b/contrib/telnet/telnet/tn3270.c
new file mode 100644
index 0000000..a75cd1e
--- /dev/null
+++ b/contrib/telnet/telnet/tn3270.c
@@ -0,0 +1,411 @@
+/*
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)tn3270.c 8.2 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <arpa/telnet.h>
+
+#include "general.h"
+
+#include "defines.h"
+#include "ring.h"
+#include "externs.h"
+#include "fdset.h"
+
+#if defined(TN3270)
+
+#include "../ctlr/screen.h"
+#include "../general/globals.h"
+
+#include "../sys_curses/telextrn.h"
+#include "../ctlr/externs.h"
+
+#if defined(unix)
+int
+ HaveInput, /* There is input available to scan */
+ cursesdata, /* Do we dump curses data? */
+ sigiocount; /* Number of times we got a SIGIO */
+
+char tline[200];
+char *transcom = 0; /* transparent mode command (default: none) */
+#endif /* defined(unix) */
+
+char Ibuf[8*BUFSIZ], *Ifrontp, *Ibackp;
+
+static char sb_terminal[] = { IAC, SB,
+ TELOPT_TTYPE, TELQUAL_IS,
+ 'I', 'B', 'M', '-', '3', '2', '7', '8', '-', '2',
+ IAC, SE };
+#define SBTERMMODEL 13
+
+static int
+ Sent3270TerminalType; /* Have we said we are a 3270? */
+
+#endif /* defined(TN3270) */
+
+
+ void
+init_3270()
+{
+#if defined(TN3270)
+#if defined(unix)
+ HaveInput = 0;
+ sigiocount = 0;
+#endif /* defined(unix) */
+ Sent3270TerminalType = 0;
+ Ifrontp = Ibackp = Ibuf;
+ init_ctlr(); /* Initialize some things */
+ init_keyboard();
+ init_screen();
+ init_system();
+#endif /* defined(TN3270) */
+}
+
+
+#if defined(TN3270)
+
+/*
+ * DataToNetwork - queue up some data to go to network. If "done" is set,
+ * then when last byte is queued, we add on an IAC EOR sequence (so,
+ * don't call us with "done" until you want that done...)
+ *
+ * We actually do send all the data to the network buffer, since our
+ * only client needs for us to do that.
+ */
+
+ int
+DataToNetwork(buffer, count, done)
+ register char *buffer; /* where the data is */
+ register int count; /* how much to send */
+ int done; /* is this the last of a logical block */
+{
+ register int loop, c;
+ int origCount;
+
+ origCount = count;
+
+ while (count) {
+ /* If not enough room for EORs, IACs, etc., wait */
+ if (NETROOM() < 6) {
+ fd_set o;
+
+ FD_ZERO(&o);
+ netflush();
+ while (NETROOM() < 6) {
+ FD_SET(net, &o);
+ (void) select(net+1, (fd_set *) 0, &o, (fd_set *) 0,
+ (struct timeval *) 0);
+ netflush();
+ }
+ }
+ c = ring_empty_count(&netoring);
+ if (c > count) {
+ c = count;
+ }
+ loop = c;
+ while (loop) {
+ if (((unsigned char)*buffer) == IAC) {
+ break;
+ }
+ buffer++;
+ loop--;
+ }
+ if ((c = c-loop)) {
+ ring_supply_data(&netoring, buffer-c, c);
+ count -= c;
+ }
+ if (loop) {
+ NET2ADD(IAC, IAC);
+ count--;
+ buffer++;
+ }
+ }
+
+ if (done) {
+ NET2ADD(IAC, EOR);
+ netflush(); /* try to move along as quickly as ... */
+ }
+ return(origCount - count);
+}
+
+
+#if defined(unix)
+ void
+inputAvailable(signo)
+ int signo;
+{
+ HaveInput = 1;
+ sigiocount++;
+}
+#endif /* defined(unix) */
+
+ void
+outputPurge()
+{
+ (void) ttyflush(1);
+}
+
+
+/*
+ * The following routines are places where the various tn3270
+ * routines make calls into telnet.c.
+ */
+
+/*
+ * DataToTerminal - queue up some data to go to terminal.
+ *
+ * Note: there are people who call us and depend on our processing
+ * *all* the data at one time (thus the select).
+ */
+
+ int
+DataToTerminal(buffer, count)
+ register char *buffer; /* where the data is */
+ register int count; /* how much to send */
+{
+ register int c;
+ int origCount;
+
+ origCount = count;
+
+ while (count) {
+ if (TTYROOM() == 0) {
+#if defined(unix)
+ fd_set o;
+
+ FD_ZERO(&o);
+#endif /* defined(unix) */
+ (void) ttyflush(0);
+ while (TTYROOM() == 0) {
+#if defined(unix)
+ FD_SET(tout, &o);
+ (void) select(tout+1, (fd_set *) 0, &o, (fd_set *) 0,
+ (struct timeval *) 0);
+#endif /* defined(unix) */
+ (void) ttyflush(0);
+ }
+ }
+ c = TTYROOM();
+ if (c > count) {
+ c = count;
+ }
+ ring_supply_data(&ttyoring, buffer, c);
+ count -= c;
+ buffer += c;
+ }
+ return(origCount);
+}
+
+
+/*
+ * Push3270 - Try to send data along the 3270 output (to screen) direction.
+ */
+
+ int
+Push3270()
+{
+ int save = ring_full_count(&netiring);
+
+ if (save) {
+ if (Ifrontp+save > Ibuf+sizeof Ibuf) {
+ if (Ibackp != Ibuf) {
+ memmove(Ibuf, Ibackp, Ifrontp-Ibackp);
+ Ifrontp -= (Ibackp-Ibuf);
+ Ibackp = Ibuf;
+ }
+ }
+ if (Ifrontp+save < Ibuf+sizeof Ibuf) {
+ (void)telrcv();
+ }
+ }
+ return save != ring_full_count(&netiring);
+}
+
+
+/*
+ * Finish3270 - get the last dregs of 3270 data out to the terminal
+ * before quitting.
+ */
+
+ void
+Finish3270()
+{
+ while (Push3270() || !DoTerminalOutput()) {
+#if defined(unix)
+ HaveInput = 0;
+#endif /* defined(unix) */
+ ;
+ }
+}
+
+
+/* StringToTerminal - output a null terminated string to the terminal */
+
+ void
+StringToTerminal(s)
+ char *s;
+{
+ int count;
+
+ count = strlen(s);
+ if (count) {
+ (void) DataToTerminal(s, count); /* we know it always goes... */
+ }
+}
+
+
+#if ((!defined(NOT43)) || defined(PUTCHAR))
+/* _putchar - output a single character to the terminal. This name is so that
+ * curses(3x) can call us to send out data.
+ */
+
+ void
+_putchar(c)
+ char c;
+{
+#if defined(sun) /* SunOS 4.0 bug */
+ c &= 0x7f;
+#endif /* defined(sun) */
+ if (cursesdata) {
+ Dump('>', &c, 1);
+ }
+ if (!TTYROOM()) {
+ (void) DataToTerminal(&c, 1);
+ } else {
+ TTYADD(c);
+ }
+}
+#endif /* ((!defined(NOT43)) || defined(PUTCHAR)) */
+
+ void
+SetIn3270()
+{
+ if (Sent3270TerminalType && my_want_state_is_will(TELOPT_BINARY)
+ && my_want_state_is_do(TELOPT_BINARY) && !donebinarytoggle) {
+ if (!In3270) {
+ In3270 = 1;
+ Init3270(); /* Initialize 3270 functions */
+ /* initialize terminal key mapping */
+ InitTerminal(); /* Start terminal going */
+ setconnmode(0);
+ }
+ } else {
+ if (In3270) {
+ StopScreen(1);
+ In3270 = 0;
+ Stop3270(); /* Tell 3270 we aren't here anymore */
+ setconnmode(0);
+ }
+ }
+}
+
+/*
+ * tn3270_ttype()
+ *
+ * Send a response to a terminal type negotiation.
+ *
+ * Return '0' if no more responses to send; '1' if a response sent.
+ */
+
+ int
+tn3270_ttype()
+{
+ /*
+ * Try to send a 3270 type terminal name. Decide which one based
+ * on the format of our screen, and (in the future) color
+ * capaiblities.
+ */
+ InitTerminal(); /* Sets MaxNumberColumns, MaxNumberLines */
+ if ((MaxNumberLines >= 24) && (MaxNumberColumns >= 80)) {
+ Sent3270TerminalType = 1;
+ if ((MaxNumberLines >= 27) && (MaxNumberColumns >= 132)) {
+ MaxNumberLines = 27;
+ MaxNumberColumns = 132;
+ sb_terminal[SBTERMMODEL] = '5';
+ } else if (MaxNumberLines >= 43) {
+ MaxNumberLines = 43;
+ MaxNumberColumns = 80;
+ sb_terminal[SBTERMMODEL] = '4';
+ } else if (MaxNumberLines >= 32) {
+ MaxNumberLines = 32;
+ MaxNumberColumns = 80;
+ sb_terminal[SBTERMMODEL] = '3';
+ } else {
+ MaxNumberLines = 24;
+ MaxNumberColumns = 80;
+ sb_terminal[SBTERMMODEL] = '2';
+ }
+ NumberLines = 24; /* before we start out... */
+ NumberColumns = 80;
+ ScreenSize = NumberLines*NumberColumns;
+ if ((MaxNumberLines*MaxNumberColumns) > MAXSCREENSIZE) {
+ ExitString("Programming error: MAXSCREENSIZE too small.\n",
+ 1);
+ /*NOTREACHED*/
+ }
+ printsub('>', sb_terminal+2, sizeof sb_terminal-2);
+ ring_supply_data(&netoring, sb_terminal, sizeof sb_terminal);
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+#if defined(unix)
+ int
+settranscom(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int i;
+
+ if (argc == 1 && transcom) {
+ transcom = 0;
+ }
+ if (argc == 1) {
+ return 1;
+ }
+ transcom = tline;
+ (void) strcpy(transcom, argv[1]);
+ for (i = 2; i < argc; ++i) {
+ (void) strcat(transcom, " ");
+ (void) strcat(transcom, argv[i]);
+ }
+ return 1;
+}
+#endif /* defined(unix) */
+
+#endif /* defined(TN3270) */
diff --git a/contrib/telnet/telnet/types.h b/contrib/telnet/telnet/types.h
new file mode 100644
index 0000000..191d311
--- /dev/null
+++ b/contrib/telnet/telnet/types.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)types.h 8.1 (Berkeley) 6/6/93
+ */
+
+typedef struct {
+ char *modedescriptions;
+ char modetype;
+} Modelist;
+
+extern Modelist modelist[];
+
+typedef struct {
+ int
+ system, /* what the current time is */
+ echotoggle, /* last time user entered echo character */
+ modenegotiated, /* last time operating mode negotiated */
+ didnetreceive, /* last time we read data from network */
+ gotDM; /* when did we last see a data mark */
+} Clocks;
+
+extern Clocks clocks;
diff --git a/contrib/telnet/telnet/utilities.c b/contrib/telnet/telnet/utilities.c
new file mode 100644
index 0000000..06d08a4
--- /dev/null
+++ b/contrib/telnet/telnet/utilities.c
@@ -0,0 +1,939 @@
+/*
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)utilities.c 8.3 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#define TELOPTS
+#define TELCMDS
+#define SLC_NAMES
+#include <arpa/telnet.h>
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include <ctype.h>
+
+#include "general.h"
+
+#include "fdset.h"
+
+#include "ring.h"
+
+#include "defines.h"
+
+#include "externs.h"
+
+FILE *NetTrace = 0; /* Not in bss, since needs to stay */
+int prettydump;
+
+/*
+ * upcase()
+ *
+ * Upcase (in place) the argument.
+ */
+
+ void
+upcase(argument)
+ register char *argument;
+{
+ register int c;
+
+ while ((c = *argument) != 0) {
+ if (islower(c)) {
+ *argument = toupper(c);
+ }
+ argument++;
+ }
+}
+
+/*
+ * SetSockOpt()
+ *
+ * Compensate for differences in 4.2 and 4.3 systems.
+ */
+
+ int
+SetSockOpt(fd, level, option, yesno)
+ int fd, level, option, yesno;
+{
+#ifndef NOT43
+ return setsockopt(fd, level, option,
+ (char *)&yesno, sizeof yesno);
+#else /* NOT43 */
+ if (yesno == 0) { /* Can't do that in 4.2! */
+ fprintf(stderr, "Error: attempt to turn off an option 0x%x.\n",
+ option);
+ return -1;
+ }
+ return setsockopt(fd, level, option, 0, 0);
+#endif /* NOT43 */
+}
+
+/*
+ * The following are routines used to print out debugging information.
+ */
+
+unsigned char NetTraceFile[256] = "(standard output)";
+
+ void
+SetNetTrace(file)
+ register char *file;
+{
+ if (NetTrace && NetTrace != stdout)
+ fclose(NetTrace);
+ if (file && (strcmp(file, "-") != 0)) {
+ NetTrace = fopen(file, "w");
+ if (NetTrace) {
+ strcpy((char *)NetTraceFile, file);
+ return;
+ }
+ fprintf(stderr, "Cannot open %s.\n", file);
+ }
+ NetTrace = stdout;
+ strcpy((char *)NetTraceFile, "(standard output)");
+}
+
+ void
+Dump(direction, buffer, length)
+ char direction;
+ unsigned char *buffer;
+ int length;
+{
+# define BYTES_PER_LINE 32
+# define min(x,y) ((x<y)? x:y)
+ unsigned char *pThis;
+ int offset;
+ extern pettydump;
+
+ offset = 0;
+
+ while (length) {
+ /* print one line */
+ fprintf(NetTrace, "%c 0x%x\t", direction, offset);
+ pThis = buffer;
+ if (prettydump) {
+ buffer = buffer + min(length, BYTES_PER_LINE/2);
+ while (pThis < buffer) {
+ fprintf(NetTrace, "%c%.2x",
+ (((*pThis)&0xff) == 0xff) ? '*' : ' ',
+ (*pThis)&0xff);
+ pThis++;
+ }
+ length -= BYTES_PER_LINE/2;
+ offset += BYTES_PER_LINE/2;
+ } else {
+ buffer = buffer + min(length, BYTES_PER_LINE);
+ while (pThis < buffer) {
+ fprintf(NetTrace, "%.2x", (*pThis)&0xff);
+ pThis++;
+ }
+ length -= BYTES_PER_LINE;
+ offset += BYTES_PER_LINE;
+ }
+ if (NetTrace == stdout) {
+ fprintf(NetTrace, "\r\n");
+ } else {
+ fprintf(NetTrace, "\n");
+ }
+ if (length < 0) {
+ fflush(NetTrace);
+ return;
+ }
+ /* find next unique line */
+ }
+ fflush(NetTrace);
+}
+
+
+ void
+printoption(direction, cmd, option)
+ char *direction;
+ int cmd, option;
+{
+ if (!showoptions)
+ return;
+ if (cmd == IAC) {
+ if (TELCMD_OK(option))
+ fprintf(NetTrace, "%s IAC %s", direction, TELCMD(option));
+ else
+ fprintf(NetTrace, "%s IAC %d", direction, option);
+ } else {
+ register char *fmt;
+ fmt = (cmd == WILL) ? "WILL" : (cmd == WONT) ? "WONT" :
+ (cmd == DO) ? "DO" : (cmd == DONT) ? "DONT" : 0;
+ if (fmt) {
+ fprintf(NetTrace, "%s %s ", direction, fmt);
+ if (TELOPT_OK(option))
+ fprintf(NetTrace, "%s", TELOPT(option));
+ else if (option == TELOPT_EXOPL)
+ fprintf(NetTrace, "EXOPL");
+ else
+ fprintf(NetTrace, "%d", option);
+ } else
+ fprintf(NetTrace, "%s %d %d", direction, cmd, option);
+ }
+ if (NetTrace == stdout) {
+ fprintf(NetTrace, "\r\n");
+ fflush(NetTrace);
+ } else {
+ fprintf(NetTrace, "\n");
+ }
+ return;
+}
+
+ void
+optionstatus()
+{
+ register int i;
+ extern char will_wont_resp[], do_dont_resp[];
+
+ for (i = 0; i < 256; i++) {
+ if (do_dont_resp[i]) {
+ if (TELOPT_OK(i))
+ printf("resp DO_DONT %s: %d\n", TELOPT(i), do_dont_resp[i]);
+ else if (TELCMD_OK(i))
+ printf("resp DO_DONT %s: %d\n", TELCMD(i), do_dont_resp[i]);
+ else
+ printf("resp DO_DONT %d: %d\n", i,
+ do_dont_resp[i]);
+ if (my_want_state_is_do(i)) {
+ if (TELOPT_OK(i))
+ printf("want DO %s\n", TELOPT(i));
+ else if (TELCMD_OK(i))
+ printf("want DO %s\n", TELCMD(i));
+ else
+ printf("want DO %d\n", i);
+ } else {
+ if (TELOPT_OK(i))
+ printf("want DONT %s\n", TELOPT(i));
+ else if (TELCMD_OK(i))
+ printf("want DONT %s\n", TELCMD(i));
+ else
+ printf("want DONT %d\n", i);
+ }
+ } else {
+ if (my_state_is_do(i)) {
+ if (TELOPT_OK(i))
+ printf(" DO %s\n", TELOPT(i));
+ else if (TELCMD_OK(i))
+ printf(" DO %s\n", TELCMD(i));
+ else
+ printf(" DO %d\n", i);
+ }
+ }
+ if (will_wont_resp[i]) {
+ if (TELOPT_OK(i))
+ printf("resp WILL_WONT %s: %d\n", TELOPT(i), will_wont_resp[i]);
+ else if (TELCMD_OK(i))
+ printf("resp WILL_WONT %s: %d\n", TELCMD(i), will_wont_resp[i]);
+ else
+ printf("resp WILL_WONT %d: %d\n",
+ i, will_wont_resp[i]);
+ if (my_want_state_is_will(i)) {
+ if (TELOPT_OK(i))
+ printf("want WILL %s\n", TELOPT(i));
+ else if (TELCMD_OK(i))
+ printf("want WILL %s\n", TELCMD(i));
+ else
+ printf("want WILL %d\n", i);
+ } else {
+ if (TELOPT_OK(i))
+ printf("want WONT %s\n", TELOPT(i));
+ else if (TELCMD_OK(i))
+ printf("want WONT %s\n", TELCMD(i));
+ else
+ printf("want WONT %d\n", i);
+ }
+ } else {
+ if (my_state_is_will(i)) {
+ if (TELOPT_OK(i))
+ printf(" WILL %s\n", TELOPT(i));
+ else if (TELCMD_OK(i))
+ printf(" WILL %s\n", TELCMD(i));
+ else
+ printf(" WILL %d\n", i);
+ }
+ }
+ }
+
+}
+
+ void
+printsub(direction, pointer, length)
+ char direction; /* '<' or '>' */
+ unsigned char *pointer; /* where suboption data sits */
+ int length; /* length of suboption data */
+{
+ register int i;
+ char buf[512];
+ extern int want_status_response;
+
+ if (showoptions || direction == 0 ||
+ (want_status_response && (pointer[0] == TELOPT_STATUS))) {
+ if (direction) {
+ fprintf(NetTrace, "%s IAC SB ",
+ (direction == '<')? "RCVD":"SENT");
+ if (length >= 3) {
+ register int j;
+
+ i = pointer[length-2];
+ j = pointer[length-1];
+
+ if (i != IAC || j != SE) {
+ fprintf(NetTrace, "(terminated by ");
+ if (TELOPT_OK(i))
+ fprintf(NetTrace, "%s ", TELOPT(i));
+ else if (TELCMD_OK(i))
+ fprintf(NetTrace, "%s ", TELCMD(i));
+ else
+ fprintf(NetTrace, "%d ", i);
+ if (TELOPT_OK(j))
+ fprintf(NetTrace, "%s", TELOPT(j));
+ else if (TELCMD_OK(j))
+ fprintf(NetTrace, "%s", TELCMD(j));
+ else
+ fprintf(NetTrace, "%d", j);
+ fprintf(NetTrace, ", not IAC SE!) ");
+ }
+ }
+ length -= 2;
+ }
+ if (length < 1) {
+ fprintf(NetTrace, "(Empty suboption??\?)");
+ if (NetTrace == stdout)
+ fflush(NetTrace);
+ return;
+ }
+ switch (pointer[0]) {
+ case TELOPT_TTYPE:
+ fprintf(NetTrace, "TERMINAL-TYPE ");
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2);
+ break;
+ case TELQUAL_SEND:
+ fprintf(NetTrace, "SEND");
+ break;
+ default:
+ fprintf(NetTrace,
+ "- unknown qualifier %d (0x%x).",
+ pointer[1], pointer[1]);
+ }
+ break;
+ case TELOPT_TSPEED:
+ fprintf(NetTrace, "TERMINAL-SPEED");
+ if (length < 2) {
+ fprintf(NetTrace, " (empty suboption??\?)");
+ break;
+ }
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ fprintf(NetTrace, " IS ");
+ fprintf(NetTrace, "%.*s", length-2, (char *)pointer+2);
+ break;
+ default:
+ if (pointer[1] == 1)
+ fprintf(NetTrace, " SEND");
+ else
+ fprintf(NetTrace, " %d (unknown)", pointer[1]);
+ for (i = 2; i < length; i++)
+ fprintf(NetTrace, " ?%d?", pointer[i]);
+ break;
+ }
+ break;
+
+ case TELOPT_LFLOW:
+ fprintf(NetTrace, "TOGGLE-FLOW-CONTROL");
+ if (length < 2) {
+ fprintf(NetTrace, " (empty suboption??\?)");
+ break;
+ }
+ switch (pointer[1]) {
+ case LFLOW_OFF:
+ fprintf(NetTrace, " OFF"); break;
+ case LFLOW_ON:
+ fprintf(NetTrace, " ON"); break;
+ case LFLOW_RESTART_ANY:
+ fprintf(NetTrace, " RESTART-ANY"); break;
+ case LFLOW_RESTART_XON:
+ fprintf(NetTrace, " RESTART-XON"); break;
+ default:
+ fprintf(NetTrace, " %d (unknown)", pointer[1]);
+ }
+ for (i = 2; i < length; i++)
+ fprintf(NetTrace, " ?%d?", pointer[i]);
+ break;
+
+ case TELOPT_NAWS:
+ fprintf(NetTrace, "NAWS");
+ if (length < 2) {
+ fprintf(NetTrace, " (empty suboption??\?)");
+ break;
+ }
+ if (length == 2) {
+ fprintf(NetTrace, " ?%d?", pointer[1]);
+ break;
+ }
+ fprintf(NetTrace, " %d %d (%d)",
+ pointer[1], pointer[2],
+ (int)((((unsigned int)pointer[1])<<8)|((unsigned int)pointer[2])));
+ if (length == 4) {
+ fprintf(NetTrace, " ?%d?", pointer[3]);
+ break;
+ }
+ fprintf(NetTrace, " %d %d (%d)",
+ pointer[3], pointer[4],
+ (int)((((unsigned int)pointer[3])<<8)|((unsigned int)pointer[4])));
+ for (i = 5; i < length; i++)
+ fprintf(NetTrace, " ?%d?", pointer[i]);
+ break;
+
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+ fprintf(NetTrace, "AUTHENTICATION");
+ if (length < 2) {
+ fprintf(NetTrace, " (empty suboption??\?)");
+ break;
+ }
+ switch (pointer[1]) {
+ case TELQUAL_REPLY:
+ case TELQUAL_IS:
+ fprintf(NetTrace, " %s ", (pointer[1] == TELQUAL_IS) ?
+ "IS" : "REPLY");
+ if (AUTHTYPE_NAME_OK(pointer[2]))
+ fprintf(NetTrace, "%s ", AUTHTYPE_NAME(pointer[2]));
+ else
+ fprintf(NetTrace, "%d ", pointer[2]);
+ if (length < 3) {
+ fprintf(NetTrace, "(partial suboption??\?)");
+ break;
+ }
+ fprintf(NetTrace, "%s|%s",
+ ((pointer[3] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ?
+ "CLIENT" : "SERVER",
+ ((pointer[3] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ?
+ "MUTUAL" : "ONE-WAY");
+
+ auth_printsub(&pointer[1], length - 1, buf, sizeof(buf));
+ fprintf(NetTrace, "%s", buf);
+ break;
+
+ case TELQUAL_SEND:
+ i = 2;
+ fprintf(NetTrace, " SEND ");
+ while (i < length) {
+ if (AUTHTYPE_NAME_OK(pointer[i]))
+ fprintf(NetTrace, "%s ", AUTHTYPE_NAME(pointer[i]));
+ else
+ fprintf(NetTrace, "%d ", pointer[i]);
+ if (++i >= length) {
+ fprintf(NetTrace, "(partial suboption??\?)");
+ break;
+ }
+ fprintf(NetTrace, "%s|%s ",
+ ((pointer[i] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ?
+ "CLIENT" : "SERVER",
+ ((pointer[i] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ?
+ "MUTUAL" : "ONE-WAY");
+ ++i;
+ }
+ break;
+
+ case TELQUAL_NAME:
+ i = 2;
+ fprintf(NetTrace, " NAME \"");
+ while (i < length)
+ putc(pointer[i++], NetTrace);
+ putc('"', NetTrace);
+ break;
+
+ default:
+ for (i = 2; i < length; i++)
+ fprintf(NetTrace, " ?%d?", pointer[i]);
+ break;
+ }
+ break;
+#endif
+
+#ifdef ENCRYPTION
+ case TELOPT_ENCRYPT:
+ fprintf(NetTrace, "ENCRYPT");
+ if (length < 2) {
+ fprintf(NetTrace, " (empty suboption??\?)");
+ break;
+ }
+ switch (pointer[1]) {
+ case ENCRYPT_START:
+ fprintf(NetTrace, " START");
+ break;
+
+ case ENCRYPT_END:
+ fprintf(NetTrace, " END");
+ break;
+
+ case ENCRYPT_REQSTART:
+ fprintf(NetTrace, " REQUEST-START");
+ break;
+
+ case ENCRYPT_REQEND:
+ fprintf(NetTrace, " REQUEST-END");
+ break;
+
+ case ENCRYPT_IS:
+ case ENCRYPT_REPLY:
+ fprintf(NetTrace, " %s ", (pointer[1] == ENCRYPT_IS) ?
+ "IS" : "REPLY");
+ if (length < 3) {
+ fprintf(NetTrace, " (partial suboption??\?)");
+ break;
+ }
+ if (ENCTYPE_NAME_OK(pointer[2]))
+ fprintf(NetTrace, "%s ", ENCTYPE_NAME(pointer[2]));
+ else
+ fprintf(NetTrace, " %d (unknown)", pointer[2]);
+
+ encrypt_printsub(&pointer[1], length - 1, buf, sizeof(buf));
+ fprintf(NetTrace, "%s", buf);
+ break;
+
+ case ENCRYPT_SUPPORT:
+ i = 2;
+ fprintf(NetTrace, " SUPPORT ");
+ while (i < length) {
+ if (ENCTYPE_NAME_OK(pointer[i]))
+ fprintf(NetTrace, "%s ", ENCTYPE_NAME(pointer[i]));
+ else
+ fprintf(NetTrace, "%d ", pointer[i]);
+ i++;
+ }
+ break;
+
+ case ENCRYPT_ENC_KEYID:
+ fprintf(NetTrace, " ENC_KEYID ");
+ goto encommon;
+
+ case ENCRYPT_DEC_KEYID:
+ fprintf(NetTrace, " DEC_KEYID ");
+ goto encommon;
+
+ default:
+ fprintf(NetTrace, " %d (unknown)", pointer[1]);
+ encommon:
+ for (i = 2; i < length; i++)
+ fprintf(NetTrace, " %d", pointer[i]);
+ break;
+ }
+ break;
+#endif /* ENCRYPTION */
+
+ case TELOPT_LINEMODE:
+ fprintf(NetTrace, "LINEMODE ");
+ if (length < 2) {
+ fprintf(NetTrace, " (empty suboption??\?)");
+ break;
+ }
+ switch (pointer[1]) {
+ case WILL:
+ fprintf(NetTrace, "WILL ");
+ goto common;
+ case WONT:
+ fprintf(NetTrace, "WONT ");
+ goto common;
+ case DO:
+ fprintf(NetTrace, "DO ");
+ goto common;
+ case DONT:
+ fprintf(NetTrace, "DONT ");
+ common:
+ if (length < 3) {
+ fprintf(NetTrace, "(no option??\?)");
+ break;
+ }
+ switch (pointer[2]) {
+ case LM_FORWARDMASK:
+ fprintf(NetTrace, "Forward Mask");
+ for (i = 3; i < length; i++)
+ fprintf(NetTrace, " %x", pointer[i]);
+ break;
+ default:
+ fprintf(NetTrace, "%d (unknown)", pointer[2]);
+ for (i = 3; i < length; i++)
+ fprintf(NetTrace, " %d", pointer[i]);
+ break;
+ }
+ break;
+
+ case LM_SLC:
+ fprintf(NetTrace, "SLC");
+ for (i = 2; i < length - 2; i += 3) {
+ if (SLC_NAME_OK(pointer[i+SLC_FUNC]))
+ fprintf(NetTrace, " %s", SLC_NAME(pointer[i+SLC_FUNC]));
+ else
+ fprintf(NetTrace, " %d", pointer[i+SLC_FUNC]);
+ switch (pointer[i+SLC_FLAGS]&SLC_LEVELBITS) {
+ case SLC_NOSUPPORT:
+ fprintf(NetTrace, " NOSUPPORT"); break;
+ case SLC_CANTCHANGE:
+ fprintf(NetTrace, " CANTCHANGE"); break;
+ case SLC_VARIABLE:
+ fprintf(NetTrace, " VARIABLE"); break;
+ case SLC_DEFAULT:
+ fprintf(NetTrace, " DEFAULT"); break;
+ }
+ fprintf(NetTrace, "%s%s%s",
+ pointer[i+SLC_FLAGS]&SLC_ACK ? "|ACK" : "",
+ pointer[i+SLC_FLAGS]&SLC_FLUSHIN ? "|FLUSHIN" : "",
+ pointer[i+SLC_FLAGS]&SLC_FLUSHOUT ? "|FLUSHOUT" : "");
+ if (pointer[i+SLC_FLAGS]& ~(SLC_ACK|SLC_FLUSHIN|
+ SLC_FLUSHOUT| SLC_LEVELBITS))
+ fprintf(NetTrace, "(0x%x)", pointer[i+SLC_FLAGS]);
+ fprintf(NetTrace, " %d;", pointer[i+SLC_VALUE]);
+ if ((pointer[i+SLC_VALUE] == IAC) &&
+ (pointer[i+SLC_VALUE+1] == IAC))
+ i++;
+ }
+ for (; i < length; i++)
+ fprintf(NetTrace, " ?%d?", pointer[i]);
+ break;
+
+ case LM_MODE:
+ fprintf(NetTrace, "MODE ");
+ if (length < 3) {
+ fprintf(NetTrace, "(no mode??\?)");
+ break;
+ }
+ {
+ char tbuf[64];
+ sprintf(tbuf, "%s%s%s%s%s",
+ pointer[2]&MODE_EDIT ? "|EDIT" : "",
+ pointer[2]&MODE_TRAPSIG ? "|TRAPSIG" : "",
+ pointer[2]&MODE_SOFT_TAB ? "|SOFT_TAB" : "",
+ pointer[2]&MODE_LIT_ECHO ? "|LIT_ECHO" : "",
+ pointer[2]&MODE_ACK ? "|ACK" : "");
+ fprintf(NetTrace, "%s", tbuf[1] ? &tbuf[1] : "0");
+ }
+ if (pointer[2]&~(MODE_MASK))
+ fprintf(NetTrace, " (0x%x)", pointer[2]);
+ for (i = 3; i < length; i++)
+ fprintf(NetTrace, " ?0x%x?", pointer[i]);
+ break;
+ default:
+ fprintf(NetTrace, "%d (unknown)", pointer[1]);
+ for (i = 2; i < length; i++)
+ fprintf(NetTrace, " %d", pointer[i]);
+ }
+ break;
+
+ case TELOPT_STATUS: {
+ register char *cp;
+ register int j, k;
+
+ fprintf(NetTrace, "STATUS");
+
+ switch (pointer[1]) {
+ default:
+ if (pointer[1] == TELQUAL_SEND)
+ fprintf(NetTrace, " SEND");
+ else
+ fprintf(NetTrace, " %d (unknown)", pointer[1]);
+ for (i = 2; i < length; i++)
+ fprintf(NetTrace, " ?%d?", pointer[i]);
+ break;
+ case TELQUAL_IS:
+ if (--want_status_response < 0)
+ want_status_response = 0;
+ if (NetTrace == stdout)
+ fprintf(NetTrace, " IS\r\n");
+ else
+ fprintf(NetTrace, " IS\n");
+
+ for (i = 2; i < length; i++) {
+ switch(pointer[i]) {
+ case DO: cp = "DO"; goto common2;
+ case DONT: cp = "DONT"; goto common2;
+ case WILL: cp = "WILL"; goto common2;
+ case WONT: cp = "WONT"; goto common2;
+ common2:
+ i++;
+ if (TELOPT_OK((int)pointer[i]))
+ fprintf(NetTrace, " %s %s", cp, TELOPT(pointer[i]));
+ else
+ fprintf(NetTrace, " %s %d", cp, pointer[i]);
+
+ if (NetTrace == stdout)
+ fprintf(NetTrace, "\r\n");
+ else
+ fprintf(NetTrace, "\n");
+ break;
+
+ case SB:
+ fprintf(NetTrace, " SB ");
+ i++;
+ j = k = i;
+ while (j < length) {
+ if (pointer[j] == SE) {
+ if (j+1 == length)
+ break;
+ if (pointer[j+1] == SE)
+ j++;
+ else
+ break;
+ }
+ pointer[k++] = pointer[j++];
+ }
+ printsub(0, &pointer[i], k - i);
+ if (i < length) {
+ fprintf(NetTrace, " SE");
+ i = j;
+ } else
+ i = j - 1;
+
+ if (NetTrace == stdout)
+ fprintf(NetTrace, "\r\n");
+ else
+ fprintf(NetTrace, "\n");
+
+ break;
+
+ default:
+ fprintf(NetTrace, " %d", pointer[i]);
+ break;
+ }
+ }
+ break;
+ }
+ break;
+ }
+
+ case TELOPT_XDISPLOC:
+ fprintf(NetTrace, "X-DISPLAY-LOCATION ");
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2);
+ break;
+ case TELQUAL_SEND:
+ fprintf(NetTrace, "SEND");
+ break;
+ default:
+ fprintf(NetTrace, "- unknown qualifier %d (0x%x).",
+ pointer[1], pointer[1]);
+ }
+ break;
+
+ case TELOPT_NEW_ENVIRON:
+ fprintf(NetTrace, "NEW-ENVIRON ");
+#ifdef OLD_ENVIRON
+ goto env_common1;
+ case TELOPT_OLD_ENVIRON:
+ fprintf(NetTrace, "OLD-ENVIRON");
+ env_common1:
+#endif
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ fprintf(NetTrace, "IS ");
+ goto env_common;
+ case TELQUAL_SEND:
+ fprintf(NetTrace, "SEND ");
+ goto env_common;
+ case TELQUAL_INFO:
+ fprintf(NetTrace, "INFO ");
+ env_common:
+ {
+ register int noquote = 2;
+#if defined(ENV_HACK) && defined(OLD_ENVIRON)
+ extern int old_env_var, old_env_value;
+#endif
+ for (i = 2; i < length; i++ ) {
+ switch (pointer[i]) {
+ case NEW_ENV_VALUE:
+#ifdef OLD_ENVIRON
+ /* case NEW_ENV_OVAR: */
+ if (pointer[0] == TELOPT_OLD_ENVIRON) {
+# ifdef ENV_HACK
+ if (old_env_var == OLD_ENV_VALUE)
+ fprintf(NetTrace, "\" (VALUE) " + noquote);
+ else
+# endif
+ fprintf(NetTrace, "\" VAR " + noquote);
+ } else
+#endif /* OLD_ENVIRON */
+ fprintf(NetTrace, "\" VALUE " + noquote);
+ noquote = 2;
+ break;
+
+ case NEW_ENV_VAR:
+#ifdef OLD_ENVIRON
+ /* case OLD_ENV_VALUE: */
+ if (pointer[0] == TELOPT_OLD_ENVIRON) {
+# ifdef ENV_HACK
+ if (old_env_value == OLD_ENV_VAR)
+ fprintf(NetTrace, "\" (VAR) " + noquote);
+ else
+# endif
+ fprintf(NetTrace, "\" VALUE " + noquote);
+ } else
+#endif /* OLD_ENVIRON */
+ fprintf(NetTrace, "\" VAR " + noquote);
+ noquote = 2;
+ break;
+
+ case ENV_ESC:
+ fprintf(NetTrace, "\" ESC " + noquote);
+ noquote = 2;
+ break;
+
+ case ENV_USERVAR:
+ fprintf(NetTrace, "\" USERVAR " + noquote);
+ noquote = 2;
+ break;
+
+ default:
+ def_case:
+ if (isprint(pointer[i]) && pointer[i] != '"') {
+ if (noquote) {
+ putc('"', NetTrace);
+ noquote = 0;
+ }
+ putc(pointer[i], NetTrace);
+ } else {
+ fprintf(NetTrace, "\" %03o " + noquote,
+ pointer[i]);
+ noquote = 2;
+ }
+ break;
+ }
+ }
+ if (!noquote)
+ putc('"', NetTrace);
+ break;
+ }
+ }
+ break;
+
+ default:
+ if (TELOPT_OK(pointer[0]))
+ fprintf(NetTrace, "%s (unknown)", TELOPT(pointer[0]));
+ else
+ fprintf(NetTrace, "%d (unknown)", pointer[0]);
+ for (i = 1; i < length; i++)
+ fprintf(NetTrace, " %d", pointer[i]);
+ break;
+ }
+ if (direction) {
+ if (NetTrace == stdout)
+ fprintf(NetTrace, "\r\n");
+ else
+ fprintf(NetTrace, "\n");
+ }
+ if (NetTrace == stdout)
+ fflush(NetTrace);
+ }
+}
+
+/* EmptyTerminal - called to make sure that the terminal buffer is empty.
+ * Note that we consider the buffer to run all the
+ * way to the kernel (thus the select).
+ */
+
+ void
+EmptyTerminal()
+{
+#if defined(unix)
+ fd_set o;
+
+ FD_ZERO(&o);
+#endif /* defined(unix) */
+
+ if (TTYBYTES() == 0) {
+#if defined(unix)
+ FD_SET(tout, &o);
+ (void) select(tout+1, (fd_set *) 0, &o, (fd_set *) 0,
+ (struct timeval *) 0); /* wait for TTLOWAT */
+#endif /* defined(unix) */
+ } else {
+ while (TTYBYTES()) {
+ (void) ttyflush(0);
+#if defined(unix)
+ FD_SET(tout, &o);
+ (void) select(tout+1, (fd_set *) 0, &o, (fd_set *) 0,
+ (struct timeval *) 0); /* wait for TTLOWAT */
+#endif /* defined(unix) */
+ }
+ }
+}
+
+ void
+SetForExit()
+{
+ setconnmode(0);
+#if defined(TN3270)
+ if (In3270) {
+ Finish3270();
+ }
+#else /* defined(TN3270) */
+ do {
+ (void)telrcv(); /* Process any incoming data */
+ EmptyTerminal();
+ } while (ring_full_count(&netiring)); /* While there is any */
+#endif /* defined(TN3270) */
+ setcommandmode();
+ fflush(stdout);
+ fflush(stderr);
+#if defined(TN3270)
+ if (In3270) {
+ StopScreen(1);
+ }
+#endif /* defined(TN3270) */
+ setconnmode(0);
+ EmptyTerminal(); /* Flush the path to the tty */
+ setcommandmode();
+}
+
+ void
+Exit(returnCode)
+ int returnCode;
+{
+ SetForExit();
+ exit(returnCode);
+}
+
+ void
+ExitString(string, returnCode)
+ char *string;
+ int returnCode;
+{
+ SetForExit();
+ fwrite(string, 1, strlen(string), stderr);
+ exit(returnCode);
+}
diff --git a/contrib/telnet/telnetd/authenc.c b/contrib/telnet/telnetd/authenc.c
new file mode 100644
index 0000000..ccb463c
--- /dev/null
+++ b/contrib/telnet/telnetd/authenc.c
@@ -0,0 +1,91 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)authenc.c 8.2 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#if defined(AUTHENTICATION) || defined(ENCRYPTION)
+#include "telnetd.h"
+#include <libtelnet/misc.h>
+
+ int
+net_write(str, len)
+ unsigned char *str;
+ int len;
+{
+ if (nfrontp + len < netobuf + BUFSIZ) {
+ memmove((void *)nfrontp, (void *)str, len);
+ nfrontp += len;
+ return(len);
+ }
+ return(0);
+}
+
+ void
+net_encrypt()
+{
+#ifdef ENCRYPTION
+ char *s = (nclearto > nbackp) ? nclearto : nbackp;
+ if (s < nfrontp && encrypt_output) {
+ (*encrypt_output)((unsigned char *)s, nfrontp - s);
+ }
+ nclearto = nfrontp;
+#endif /* ENCRYPTION */
+}
+
+ int
+telnet_spin()
+{
+ ttloop();
+ return(0);
+}
+
+ char *
+telnet_getenv(val)
+ char *val;
+{
+ extern char *getenv();
+ return(getenv(val));
+}
+
+ char *
+telnet_gets(prompt, result, length, echo)
+ char *prompt;
+ char *result;
+ int length;
+ int echo;
+{
+ return((char *)0);
+}
+#endif /* defined(AUTHENTICATION) || defined(ENCRYPTION) */
diff --git a/contrib/telnet/telnetd/defs.h b/contrib/telnet/telnetd/defs.h
new file mode 100644
index 0000000..a73d4a6
--- /dev/null
+++ b/contrib/telnet/telnetd/defs.h
@@ -0,0 +1,296 @@
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)defs.h 8.1 (Berkeley) 6/4/93
+ */
+
+/*
+ * Telnet server defines
+ */
+#include <sys/types.h>
+#include <sys/param.h>
+
+#ifndef BSD
+# define BSD 43
+#endif
+
+#if defined(CRAY) && !defined(LINEMODE)
+# define SYSV_TERMIO
+# define LINEMODE
+# define KLUDGELINEMODE
+# define DIAGNOSTICS
+# if defined(UNICOS50) && !defined(UNICOS5)
+# define UNICOS5
+# endif
+# if !defined(UNICOS5)
+# define BFTPDAEMON
+# define HAS_IP_TOS
+# endif
+#endif /* CRAY */
+#if defined(UNICOS5) && !defined(NO_SETSID)
+# define NO_SETSID
+#endif
+
+#if defined(PRINTOPTIONS) && defined(DIAGNOSTICS)
+#define TELOPTS
+#define TELCMDS
+#define SLC_NAMES
+#endif
+
+#if defined(SYSV_TERMIO) && !defined(USE_TERMIO)
+# define USE_TERMIO
+#endif
+
+#include <sys/socket.h>
+#ifndef CRAY
+#include <sys/wait.h>
+#endif /* CRAY */
+#include <fcntl.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#ifndef FILIO_H
+#include <sys/ioctl.h>
+#else
+#include <sys/filio.h>
+#endif
+
+#include <netinet/in.h>
+
+#include <arpa/telnet.h>
+
+#include <stdio.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#endif
+#include <signal.h>
+#include <errno.h>
+#include <netdb.h>
+#include <syslog.h>
+#ifndef LOG_DAEMON
+#define LOG_DAEMON 0
+#endif
+#ifndef LOG_ODELAY
+#define LOG_ODELAY 0
+#endif
+#include <ctype.h>
+#ifndef NO_STRING_H
+#include <string.h>
+#else
+#include <strings.h>
+#endif
+
+#ifndef USE_TERMIO
+#include <sgtty.h>
+#else
+# ifdef SYSV_TERMIO
+# include <termio.h>
+# else
+# include <termios.h>
+# endif
+#endif
+#if !defined(USE_TERMIO) || defined(NO_CC_T)
+typedef unsigned char cc_t;
+#endif
+
+#ifdef __STDC__
+#include <unistd.h>
+#endif
+
+#ifndef _POSIX_VDISABLE
+# ifdef VDISABLE
+# define _POSIX_VDISABLE VDISABLE
+# else
+# define _POSIX_VDISABLE ((unsigned char)'\377')
+# endif
+#endif
+
+
+#ifdef CRAY
+# ifdef CRAY1
+# include <sys/pty.h>
+# ifndef FD_ZERO
+# include <sys/select.h>
+# endif /* FD_ZERO */
+# endif /* CRAY1 */
+
+#include <memory.h>
+#endif /* CRAY */
+
+#ifdef __hpux
+#include <sys/ptyio.h>
+#endif
+
+#if !defined(TIOCSCTTY) && defined(TCSETCTTY)
+# define TIOCSCTTY TCSETCTTY
+#endif
+
+#ifndef FD_SET
+#ifndef HAVE_fd_set
+typedef struct fd_set { int fds_bits[1]; } fd_set;
+#endif
+
+#define FD_SET(n, p) ((p)->fds_bits[0] |= (1<<(n)))
+#define FD_CLR(n, p) ((p)->fds_bits[0] &= ~(1<<(n)))
+#define FD_ISSET(n, p) ((p)->fds_bits[0] & (1<<(n)))
+#define FD_ZERO(p) ((p)->fds_bits[0] = 0)
+#endif /* FD_SET */
+
+/*
+ * I/O data buffers defines
+ */
+#define NETSLOP 64
+#ifdef CRAY
+#undef BUFSIZ
+#define BUFSIZ 2048
+#endif
+
+#define NIACCUM(c) { *netip++ = c; \
+ ncc++; \
+ }
+
+/* clock manipulations */
+#define settimer(x) (clocks.x = ++clocks.system)
+#define sequenceIs(x,y) (clocks.x < clocks.y)
+
+/*
+ * Linemode support states, in decreasing order of importance
+ */
+#define REAL_LINEMODE 0x04
+#define KLUDGE_OK 0x03
+#define NO_AUTOKLUDGE 0x02
+#define KLUDGE_LINEMODE 0x01
+#define NO_LINEMODE 0x00
+
+/*
+ * Structures of information for each special character function.
+ */
+typedef struct {
+ unsigned char flag; /* the flags for this function */
+ cc_t val; /* the value of the special character */
+} slcent, *Slcent;
+
+typedef struct {
+ slcent defset; /* the default settings */
+ slcent current; /* the current settings */
+ cc_t *sptr; /* a pointer to the char in */
+ /* system data structures */
+} slcfun, *Slcfun;
+
+#ifdef DIAGNOSTICS
+/*
+ * Diagnostics capabilities
+ */
+#define TD_REPORT 0x01 /* Report operations to client */
+#define TD_EXERCISE 0x02 /* Exercise client's implementation */
+#define TD_NETDATA 0x04 /* Display received data stream */
+#define TD_PTYDATA 0x08 /* Display data passed to pty */
+#define TD_OPTIONS 0x10 /* Report just telnet options */
+#endif /* DIAGNOSTICS */
+
+/*
+ * We keep track of each side of the option negotiation.
+ */
+
+#define MY_STATE_WILL 0x01
+#define MY_WANT_STATE_WILL 0x02
+#define MY_STATE_DO 0x04
+#define MY_WANT_STATE_DO 0x08
+
+/*
+ * Macros to check the current state of things
+ */
+
+#define my_state_is_do(opt) (options[opt]&MY_STATE_DO)
+#define my_state_is_will(opt) (options[opt]&MY_STATE_WILL)
+#define my_want_state_is_do(opt) (options[opt]&MY_WANT_STATE_DO)
+#define my_want_state_is_will(opt) (options[opt]&MY_WANT_STATE_WILL)
+
+#define my_state_is_dont(opt) (!my_state_is_do(opt))
+#define my_state_is_wont(opt) (!my_state_is_will(opt))
+#define my_want_state_is_dont(opt) (!my_want_state_is_do(opt))
+#define my_want_state_is_wont(opt) (!my_want_state_is_will(opt))
+
+#define set_my_state_do(opt) (options[opt] |= MY_STATE_DO)
+#define set_my_state_will(opt) (options[opt] |= MY_STATE_WILL)
+#define set_my_want_state_do(opt) (options[opt] |= MY_WANT_STATE_DO)
+#define set_my_want_state_will(opt) (options[opt] |= MY_WANT_STATE_WILL)
+
+#define set_my_state_dont(opt) (options[opt] &= ~MY_STATE_DO)
+#define set_my_state_wont(opt) (options[opt] &= ~MY_STATE_WILL)
+#define set_my_want_state_dont(opt) (options[opt] &= ~MY_WANT_STATE_DO)
+#define set_my_want_state_wont(opt) (options[opt] &= ~MY_WANT_STATE_WILL)
+
+/*
+ * Tricky code here. What we want to know is if the MY_STATE_WILL
+ * and MY_WANT_STATE_WILL bits have the same value. Since the two
+ * bits are adjacent, a little arithmatic will show that by adding
+ * in the lower bit, the upper bit will be set if the two bits were
+ * different, and clear if they were the same.
+ */
+#define my_will_wont_is_changing(opt) \
+ ((options[opt]+MY_STATE_WILL) & MY_WANT_STATE_WILL)
+
+#define my_do_dont_is_changing(opt) \
+ ((options[opt]+MY_STATE_DO) & MY_WANT_STATE_DO)
+
+/*
+ * Make everything symetrical
+ */
+
+#define HIS_STATE_WILL MY_STATE_DO
+#define HIS_WANT_STATE_WILL MY_WANT_STATE_DO
+#define HIS_STATE_DO MY_STATE_WILL
+#define HIS_WANT_STATE_DO MY_WANT_STATE_WILL
+
+#define his_state_is_do my_state_is_will
+#define his_state_is_will my_state_is_do
+#define his_want_state_is_do my_want_state_is_will
+#define his_want_state_is_will my_want_state_is_do
+
+#define his_state_is_dont my_state_is_wont
+#define his_state_is_wont my_state_is_dont
+#define his_want_state_is_dont my_want_state_is_wont
+#define his_want_state_is_wont my_want_state_is_dont
+
+#define set_his_state_do set_my_state_will
+#define set_his_state_will set_my_state_do
+#define set_his_want_state_do set_my_want_state_will
+#define set_his_want_state_will set_my_want_state_do
+
+#define set_his_state_dont set_my_state_wont
+#define set_his_state_wont set_my_state_dont
+#define set_his_want_state_dont set_my_want_state_wont
+#define set_his_want_state_wont set_my_want_state_dont
+
+#define his_will_wont_is_changing my_do_dont_is_changing
+#define his_do_dont_is_changing my_will_wont_is_changing
diff --git a/contrib/telnet/telnetd/ext.h b/contrib/telnet/telnetd/ext.h
new file mode 100644
index 0000000..19bc0d6
--- /dev/null
+++ b/contrib/telnet/telnetd/ext.h
@@ -0,0 +1,240 @@
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)ext.h 8.2 (Berkeley) 12/15/93
+ */
+
+/*
+ * Telnet server variable declarations
+ */
+extern char options[256];
+extern char do_dont_resp[256];
+extern char will_wont_resp[256];
+extern int linemode; /* linemode on/off */
+#ifdef LINEMODE
+extern int uselinemode; /* what linemode to use (on/off) */
+extern int editmode; /* edit modes in use */
+extern int useeditmode; /* edit modes to use */
+extern int alwayslinemode; /* command line option */
+# ifdef KLUDGELINEMODE
+extern int lmodetype; /* Client support for linemode */
+# endif /* KLUDGELINEMODE */
+#endif /* LINEMODE */
+extern int flowmode; /* current flow control state */
+extern int restartany; /* restart output on any character state */
+#ifdef DIAGNOSTICS
+extern int diagnostic; /* telnet diagnostic capabilities */
+#endif /* DIAGNOSTICS */
+#ifdef BFTPDAEMON
+extern int bftpd; /* behave as bftp daemon */
+#endif /* BFTPDAEMON */
+#if defined(SecurID)
+extern int require_SecurID;
+#endif
+#if defined(AUTHENTICATION)
+extern int auth_level;
+#endif
+
+extern slcfun slctab[NSLC + 1]; /* slc mapping table */
+
+char *terminaltype;
+
+/*
+ * I/O data buffers, pointers, and counters.
+ */
+extern char ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;
+
+extern char netibuf[BUFSIZ], *netip;
+
+extern char netobuf[BUFSIZ+NETSLOP], *nfrontp, *nbackp;
+extern char *neturg; /* one past last bye of urgent data */
+
+extern int pcc, ncc;
+
+#if defined(CRAY2) && defined(UNICOS5)
+extern int unpcc; /* characters left unprocessed by CRAY-2 terminal routine */
+extern char *unptyip; /* pointer to remaining characters in buffer */
+#endif
+
+extern int pty, net;
+extern char *line;
+extern int SYNCHing; /* we are in TELNET SYNCH mode */
+
+#ifndef P
+# ifdef __STDC__
+# define P(x) x
+# else
+# define P(x) ()
+# endif
+#endif
+
+extern void
+ _termstat P((void)),
+ add_slc P((int, int, int)),
+ check_slc P((void)),
+ change_slc P((int, int, int)),
+ cleanup P((int)),
+ clientstat P((int, int, int)),
+ copy_termbuf P((char *, int)),
+ deferslc P((void)),
+ defer_terminit P((void)),
+ do_opt_slc P((unsigned char *, int)),
+ doeof P((void)),
+ dooption P((int)),
+ dontoption P((int)),
+ edithost P((char *, char *)),
+ fatal P((int, char *)),
+ fatalperror P((int, char *)),
+ get_slc_defaults P((void)),
+ init_env P((void)),
+ init_termbuf P((void)),
+ interrupt P((void)),
+ localstat P((void)),
+ flowstat P((void)),
+ netclear P((void)),
+ netflush P((void)),
+#ifdef DIAGNOSTICS
+ printoption P((char *, int)),
+ printdata P((char *, char *, int)),
+ printsub P((int, unsigned char *, int)),
+#endif
+ ptyflush P((void)),
+ putchr P((int)),
+ putf P((char *, char *)),
+ recv_ayt P((void)),
+ send_do P((int, int)),
+ send_dont P((int, int)),
+ send_slc P((void)),
+ send_status P((void)),
+ send_will P((int, int)),
+ send_wont P((int, int)),
+ sendbrk P((void)),
+ sendsusp P((void)),
+ set_termbuf P((void)),
+ start_login P((char *, int, char *)),
+ start_slc P((int)),
+#if defined(AUTHENTICATION)
+ start_slave P((char *)),
+#else
+ start_slave P((char *, int, char *)),
+#endif
+ suboption P((void)),
+ telrcv P((void)),
+ ttloop P((void)),
+ tty_binaryin P((int)),
+ tty_binaryout P((int));
+
+extern int
+ end_slc P((unsigned char **)),
+ getnpty P((void)),
+#ifndef convex
+ getpty P((int *)),
+#endif
+ login_tty P((int)),
+ spcset P((int, cc_t *, cc_t **)),
+ stilloob P((int)),
+ terminit P((void)),
+ termstat P((void)),
+ tty_flowmode P((void)),
+ tty_restartany P((void)),
+ tty_isbinaryin P((void)),
+ tty_isbinaryout P((void)),
+ tty_iscrnl P((void)),
+ tty_isecho P((void)),
+ tty_isediting P((void)),
+ tty_islitecho P((void)),
+ tty_isnewmap P((void)),
+ tty_israw P((void)),
+ tty_issofttab P((void)),
+ tty_istrapsig P((void)),
+ tty_linemode P((void));
+
+extern void
+ tty_rspeed P((int)),
+ tty_setecho P((int)),
+ tty_setedit P((int)),
+ tty_setlinemode P((int)),
+ tty_setlitecho P((int)),
+ tty_setsig P((int)),
+ tty_setsofttab P((int)),
+ tty_tspeed P((int)),
+ willoption P((int)),
+ wontoption P((int)),
+ writenet P((unsigned char *, int));
+
+#ifdef ENCRYPTION
+extern void (*encrypt_output) P((unsigned char *, int));
+extern int (*decrypt_input) P((int));
+extern char *nclearto;
+#endif /* ENCRYPTION */
+
+
+/*
+ * The following are some clocks used to decide how to interpret
+ * the relationship between various variables.
+ */
+
+extern struct {
+ int
+ system, /* what the current time is */
+ echotoggle, /* last time user entered echo character */
+ modenegotiated, /* last time operating mode negotiated */
+ didnetreceive, /* last time we read data from network */
+ ttypesubopt, /* ttype subopt is received */
+ tspeedsubopt, /* tspeed subopt is received */
+ environsubopt, /* environ subopt is received */
+ oenvironsubopt, /* old environ subopt is received */
+ xdisplocsubopt, /* xdisploc subopt is received */
+ baseline, /* time started to do timed action */
+ gotDM; /* when did we last see a data mark */
+} clocks;
+
+
+#if defined(CRAY2) && defined(UNICOS5)
+extern int needtermstat;
+#endif
+
+#ifndef DEFAULT_IM
+# ifdef CRAY
+# define DEFAULT_IM "\r\n\r\nCray UNICOS (%h) (%t)\r\n\r\r\n\r"
+# else
+# ifdef sun
+# define DEFAULT_IM "\r\n\r\nSunOS UNIX (%h) (%t)\r\n\r\r\n\r"
+# else
+# ifdef ultrix
+# define DEFAULT_IM "\r\n\r\nULTRIX (%h) (%t)\r\n\r\r\n\r"
+# else
+# define DEFAULT_IM "\r\n\r\n4.4 BSD UNIX (%h) (%t)\r\n\r\r\n\r"
+# endif
+# endif
+# endif
+#endif
diff --git a/contrib/telnet/telnetd/global.c b/contrib/telnet/telnetd/global.c
new file mode 100644
index 0000000..af21acc
--- /dev/null
+++ b/contrib/telnet/telnetd/global.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)global.c 8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+/*
+ * Allocate global variables. We do this
+ * by including the header file that defines
+ * them all as externs, but first we define
+ * the keyword "extern" to be nothing, so that
+ * we will actually allocate the space.
+ */
+
+#include "defs.h"
+#define extern
+#include "ext.h"
diff --git a/contrib/telnet/telnetd/pathnames.h b/contrib/telnet/telnetd/pathnames.h
new file mode 100644
index 0000000..c8b0806
--- /dev/null
+++ b/contrib/telnet/telnetd/pathnames.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)pathnames.h 8.1 (Berkeley) 6/4/93
+ */
+
+#if BSD > 43
+
+# include <paths.h>
+
+# ifndef _PATH_LOGIN
+# define _PATH_LOGIN "/usr/bin/login"
+# endif
+
+#else
+
+# define _PATH_TTY "/dev/tty"
+# ifndef _PATH_LOGIN
+# define _PATH_LOGIN "/bin/login"
+# endif
+
+#endif
+
+#ifdef BFTPDAEMON
+#define BFTPPATH "/usr/ucb/bftp"
+#endif /* BFTPDAEMON */
diff --git a/contrib/telnet/telnetd/slc.c b/contrib/telnet/telnetd/slc.c
new file mode 100644
index 0000000..6cbb7ab
--- /dev/null
+++ b/contrib/telnet/telnetd/slc.c
@@ -0,0 +1,491 @@
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)slc.c 8.2 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#include "telnetd.h"
+
+#ifdef LINEMODE
+/*
+ * local varibles
+ */
+static unsigned char *def_slcbuf = (unsigned char *)0;
+static int def_slclen = 0;
+static int slcchange; /* change to slc is requested */
+static unsigned char *slcptr; /* pointer into slc buffer */
+static unsigned char slcbuf[NSLC*6]; /* buffer for slc negotiation */
+
+/*
+ * send_slc
+ *
+ * Write out the current special characters to the client.
+ */
+ void
+send_slc()
+{
+ register int i;
+
+ /*
+ * Send out list of triplets of special characters
+ * to client. We only send info on the characters
+ * that are currently supported.
+ */
+ for (i = 1; i <= NSLC; i++) {
+ if ((slctab[i].defset.flag & SLC_LEVELBITS) == SLC_NOSUPPORT)
+ continue;
+ add_slc((unsigned char)i, slctab[i].current.flag,
+ slctab[i].current.val);
+ }
+
+} /* end of send_slc */
+
+/*
+ * default_slc
+ *
+ * Set pty special characters to all the defaults.
+ */
+ void
+default_slc()
+{
+ register int i;
+
+ for (i = 1; i <= NSLC; i++) {
+ slctab[i].current.val = slctab[i].defset.val;
+ if (slctab[i].current.val == (cc_t)(_POSIX_VDISABLE))
+ slctab[i].current.flag = SLC_NOSUPPORT;
+ else
+ slctab[i].current.flag = slctab[i].defset.flag;
+ if (slctab[i].sptr) {
+ *(slctab[i].sptr) = slctab[i].defset.val;
+ }
+ }
+ slcchange = 1;
+
+} /* end of default_slc */
+#endif /* LINEMODE */
+
+/*
+ * get_slc_defaults
+ *
+ * Initialize the slc mapping table.
+ */
+ void
+get_slc_defaults()
+{
+ register int i;
+
+ init_termbuf();
+
+ for (i = 1; i <= NSLC; i++) {
+ slctab[i].defset.flag =
+ spcset(i, &slctab[i].defset.val, &slctab[i].sptr);
+ slctab[i].current.flag = SLC_NOSUPPORT;
+ slctab[i].current.val = 0;
+ }
+
+} /* end of get_slc_defaults */
+
+#ifdef LINEMODE
+/*
+ * add_slc
+ *
+ * Add an slc triplet to the slc buffer.
+ */
+ void
+add_slc(func, flag, val)
+ register char func, flag;
+ register cc_t val;
+{
+
+ if ((*slcptr++ = (unsigned char)func) == 0xff)
+ *slcptr++ = 0xff;
+
+ if ((*slcptr++ = (unsigned char)flag) == 0xff)
+ *slcptr++ = 0xff;
+
+ if ((*slcptr++ = (unsigned char)val) == 0xff)
+ *slcptr++ = 0xff;
+
+} /* end of add_slc */
+
+/*
+ * start_slc
+ *
+ * Get ready to process incoming slc's and respond to them.
+ *
+ * The parameter getit is non-zero if it is necessary to grab a copy
+ * of the terminal control structures.
+ */
+ void
+start_slc(getit)
+ register int getit;
+{
+
+ slcchange = 0;
+ if (getit)
+ init_termbuf();
+ (void) sprintf((char *)slcbuf, "%c%c%c%c",
+ IAC, SB, TELOPT_LINEMODE, LM_SLC);
+ slcptr = slcbuf + 4;
+
+} /* end of start_slc */
+
+/*
+ * end_slc
+ *
+ * Finish up the slc negotiation. If something to send, then send it.
+ */
+ int
+end_slc(bufp)
+ register unsigned char **bufp;
+{
+ register int len;
+ void netflush();
+
+ /*
+ * If a change has occured, store the new terminal control
+ * structures back to the terminal driver.
+ */
+ if (slcchange) {
+ set_termbuf();
+ }
+
+ /*
+ * If the pty state has not yet been fully processed and there is a
+ * deferred slc request from the client, then do not send any
+ * sort of slc negotiation now. We will respond to the client's
+ * request very soon.
+ */
+ if (def_slcbuf && (terminit() == 0)) {
+ return(0);
+ }
+
+ if (slcptr > (slcbuf + 4)) {
+ if (bufp) {
+ *bufp = &slcbuf[4];
+ return(slcptr - slcbuf - 4);
+ } else {
+ (void) sprintf((char *)slcptr, "%c%c", IAC, SE);
+ slcptr += 2;
+ len = slcptr - slcbuf;
+ writenet(slcbuf, len);
+ netflush(); /* force it out immediately */
+ DIAG(TD_OPTIONS, printsub('>', slcbuf+2, len-2););
+ }
+ }
+ return (0);
+
+} /* end of end_slc */
+
+/*
+ * process_slc
+ *
+ * Figure out what to do about the client's slc
+ */
+ void
+process_slc(func, flag, val)
+ register unsigned char func, flag;
+ register cc_t val;
+{
+ register int hislevel, mylevel, ack;
+
+ /*
+ * Ensure that we know something about this function
+ */
+ if (func > NSLC) {
+ add_slc(func, SLC_NOSUPPORT, 0);
+ return;
+ }
+
+ /*
+ * Process the special case requests of 0 SLC_DEFAULT 0
+ * and 0 SLC_VARIABLE 0. Be a little forgiving here, don't
+ * worry about whether the value is actually 0 or not.
+ */
+ if (func == 0) {
+ if ((flag = flag & SLC_LEVELBITS) == SLC_DEFAULT) {
+ default_slc();
+ send_slc();
+ } else if (flag == SLC_VARIABLE) {
+ send_slc();
+ }
+ return;
+ }
+
+ /*
+ * Appears to be a function that we know something about. So
+ * get on with it and see what we know.
+ */
+
+ hislevel = flag & SLC_LEVELBITS;
+ mylevel = slctab[func].current.flag & SLC_LEVELBITS;
+ ack = flag & SLC_ACK;
+ /*
+ * ignore the command if:
+ * the function value and level are the same as what we already have;
+ * or the level is the same and the ack bit is set
+ */
+ if (hislevel == mylevel && (val == slctab[func].current.val || ack)) {
+ return;
+ } else if (ack) {
+ /*
+ * If we get here, we got an ack, but the levels don't match.
+ * This shouldn't happen. If it does, it is probably because
+ * we have sent two requests to set a variable without getting
+ * a response between them, and this is the first response.
+ * So, ignore it, and wait for the next response.
+ */
+ return;
+ } else {
+ change_slc(func, flag, val);
+ }
+
+} /* end of process_slc */
+
+/*
+ * change_slc
+ *
+ * Process a request to change one of our special characters.
+ * Compare client's request with what we are capable of supporting.
+ */
+ void
+change_slc(func, flag, val)
+ register char func, flag;
+ register cc_t val;
+{
+ register int hislevel, mylevel;
+
+ hislevel = flag & SLC_LEVELBITS;
+ mylevel = slctab[func].defset.flag & SLC_LEVELBITS;
+ /*
+ * If client is setting a function to NOSUPPORT
+ * or DEFAULT, then we can easily and directly
+ * accomodate the request.
+ */
+ if (hislevel == SLC_NOSUPPORT) {
+ slctab[func].current.flag = flag;
+ slctab[func].current.val = (cc_t)_POSIX_VDISABLE;
+ flag |= SLC_ACK;
+ add_slc(func, flag, val);
+ return;
+ }
+ if (hislevel == SLC_DEFAULT) {
+ /*
+ * Special case here. If client tells us to use
+ * the default on a function we don't support, then
+ * return NOSUPPORT instead of what we may have as a
+ * default level of DEFAULT.
+ */
+ if (mylevel == SLC_DEFAULT) {
+ slctab[func].current.flag = SLC_NOSUPPORT;
+ } else {
+ slctab[func].current.flag = slctab[func].defset.flag;
+ }
+ slctab[func].current.val = slctab[func].defset.val;
+ add_slc(func, slctab[func].current.flag,
+ slctab[func].current.val);
+ return;
+ }
+
+ /*
+ * Client wants us to change to a new value or he
+ * is telling us that he can't change to our value.
+ * Some of the slc's we support and can change,
+ * some we do support but can't change,
+ * and others we don't support at all.
+ * If we can change it then we have a pointer to
+ * the place to put the new value, so change it,
+ * otherwise, continue the negotiation.
+ */
+ if (slctab[func].sptr) {
+ /*
+ * We can change this one.
+ */
+ slctab[func].current.val = val;
+ *(slctab[func].sptr) = val;
+ slctab[func].current.flag = flag;
+ flag |= SLC_ACK;
+ slcchange = 1;
+ add_slc(func, flag, val);
+ } else {
+ /*
+ * It is not possible for us to support this
+ * request as he asks.
+ *
+ * If our level is DEFAULT, then just ack whatever was
+ * sent.
+ *
+ * If he can't change and we can't change,
+ * then degenerate to NOSUPPORT.
+ *
+ * Otherwise we send our level back to him, (CANTCHANGE
+ * or NOSUPPORT) and if CANTCHANGE, send
+ * our value as well.
+ */
+ if (mylevel == SLC_DEFAULT) {
+ slctab[func].current.flag = flag;
+ slctab[func].current.val = val;
+ flag |= SLC_ACK;
+ } else if (hislevel == SLC_CANTCHANGE &&
+ mylevel == SLC_CANTCHANGE) {
+ flag &= ~SLC_LEVELBITS;
+ flag |= SLC_NOSUPPORT;
+ slctab[func].current.flag = flag;
+ } else {
+ flag &= ~SLC_LEVELBITS;
+ flag |= mylevel;
+ slctab[func].current.flag = flag;
+ if (mylevel == SLC_CANTCHANGE) {
+ slctab[func].current.val =
+ slctab[func].defset.val;
+ val = slctab[func].current.val;
+ }
+ }
+ add_slc(func, flag, val);
+ }
+
+} /* end of change_slc */
+
+#if defined(USE_TERMIO) && (VEOF == VMIN)
+cc_t oldeofc = '\004';
+#endif
+
+/*
+ * check_slc
+ *
+ * Check the special characters in use and notify the client if any have
+ * changed. Only those characters that are capable of being changed are
+ * likely to have changed. If a local change occurs, kick the support level
+ * and flags up to the defaults.
+ */
+ void
+check_slc()
+{
+ register int i;
+
+ for (i = 1; i <= NSLC; i++) {
+#if defined(USE_TERMIO) && (VEOF == VMIN)
+ /*
+ * In a perfect world this would be a neat little
+ * function. But in this world, we should not notify
+ * client of changes to the VEOF char when
+ * ICANON is off, because it is not representing
+ * a special character.
+ */
+ if (i == SLC_EOF) {
+ if (!tty_isediting())
+ continue;
+ else if (slctab[i].sptr)
+ oldeofc = *(slctab[i].sptr);
+ }
+#endif /* defined(USE_TERMIO) && defined(SYSV_TERMIO) */
+ if (slctab[i].sptr &&
+ (*(slctab[i].sptr) != slctab[i].current.val)) {
+ slctab[i].current.val = *(slctab[i].sptr);
+ if (*(slctab[i].sptr) == (cc_t)_POSIX_VDISABLE)
+ slctab[i].current.flag = SLC_NOSUPPORT;
+ else
+ slctab[i].current.flag = slctab[i].defset.flag;
+ add_slc((unsigned char)i, slctab[i].current.flag,
+ slctab[i].current.val);
+ }
+ }
+} /* check_slc */
+
+/*
+ * do_opt_slc
+ *
+ * Process an slc option buffer. Defer processing of incoming slc's
+ * until after the terminal state has been processed. Save the first slc
+ * request that comes along, but discard all others.
+ *
+ * ptr points to the beginning of the buffer, len is the length.
+ */
+ void
+do_opt_slc(ptr, len)
+ register unsigned char *ptr;
+ register int len;
+{
+ register unsigned char func, flag;
+ cc_t val;
+ register unsigned char *end = ptr + len;
+
+ if (terminit()) { /* go ahead */
+ while (ptr < end) {
+ func = *ptr++;
+ if (ptr >= end) break;
+ flag = *ptr++;
+ if (ptr >= end) break;
+ val = (cc_t)*ptr++;
+
+ process_slc(func, flag, val);
+
+ }
+ } else {
+ /*
+ * save this slc buffer if it is the first, otherwise dump
+ * it.
+ */
+ if (def_slcbuf == (unsigned char *)0) {
+ def_slclen = len;
+ def_slcbuf = (unsigned char *)malloc((unsigned)len);
+ if (def_slcbuf == (unsigned char *)0)
+ return; /* too bad */
+ memmove(def_slcbuf, ptr, len);
+ }
+ }
+
+} /* end of do_opt_slc */
+
+/*
+ * deferslc
+ *
+ * Do slc stuff that was deferred.
+ */
+ void
+deferslc()
+{
+ if (def_slcbuf) {
+ start_slc(1);
+ do_opt_slc(def_slcbuf, def_slclen);
+ (void) end_slc(0);
+ free(def_slcbuf);
+ def_slcbuf = (unsigned char *)0;
+ def_slclen = 0;
+ }
+
+} /* end of deferslc */
+
+#endif /* LINEMODE */
diff --git a/contrib/telnet/telnetd/state.c b/contrib/telnet/telnetd/state.c
new file mode 100644
index 0000000..4ee8bea
--- /dev/null
+++ b/contrib/telnet/telnetd/state.c
@@ -0,0 +1,1612 @@
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)state.c 8.5 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#include "telnetd.h"
+#if defined(AUTHENTICATION)
+#include <libtelnet/auth.h>
+#endif
+
+unsigned char doopt[] = { IAC, DO, '%', 'c', 0 };
+unsigned char dont[] = { IAC, DONT, '%', 'c', 0 };
+unsigned char will[] = { IAC, WILL, '%', 'c', 0 };
+unsigned char wont[] = { IAC, WONT, '%', 'c', 0 };
+int not42 = 1;
+
+/*
+ * Buffer for sub-options, and macros
+ * for suboptions buffer manipulations
+ */
+unsigned char subbuffer[512], *subpointer= subbuffer, *subend= subbuffer;
+
+#define SB_CLEAR() subpointer = subbuffer
+#define SB_TERM() { subend = subpointer; SB_CLEAR(); }
+#define SB_ACCUM(c) if (subpointer < (subbuffer+sizeof subbuffer)) { \
+ *subpointer++ = (c); \
+ }
+#define SB_GET() ((*subpointer++)&0xff)
+#define SB_EOF() (subpointer >= subend)
+#define SB_LEN() (subend - subpointer)
+
+#ifdef ENV_HACK
+unsigned char *subsave;
+#define SB_SAVE() subsave = subpointer;
+#define SB_RESTORE() subpointer = subsave;
+#endif
+
+
+/*
+ * State for recv fsm
+ */
+#define TS_DATA 0 /* base state */
+#define TS_IAC 1 /* look for double IAC's */
+#define TS_CR 2 /* CR-LF ->'s CR */
+#define TS_SB 3 /* throw away begin's... */
+#define TS_SE 4 /* ...end's (suboption negotiation) */
+#define TS_WILL 5 /* will option negotiation */
+#define TS_WONT 6 /* wont " */
+#define TS_DO 7 /* do " */
+#define TS_DONT 8 /* dont " */
+
+ void
+telrcv()
+{
+ register int c;
+ static int state = TS_DATA;
+#if defined(CRAY2) && defined(UNICOS5)
+ char *opfrontp = pfrontp;
+#endif
+
+ while (ncc > 0) {
+ if ((&ptyobuf[BUFSIZ] - pfrontp) < 2)
+ break;
+ c = *netip++ & 0377, ncc--;
+#ifdef ENCRYPTION
+ if (decrypt_input)
+ c = (*decrypt_input)(c);
+#endif /* ENCRYPTION */
+ switch (state) {
+
+ case TS_CR:
+ state = TS_DATA;
+ /* Strip off \n or \0 after a \r */
+ if ((c == 0) || (c == '\n')) {
+ break;
+ }
+ /* FALL THROUGH */
+
+ case TS_DATA:
+ if (c == IAC) {
+ state = TS_IAC;
+ break;
+ }
+ /*
+ * We now map \r\n ==> \r for pragmatic reasons.
+ * Many client implementations send \r\n when
+ * the user hits the CarriageReturn key.
+ *
+ * We USED to map \r\n ==> \n, since \r\n says
+ * that we want to be in column 1 of the next
+ * printable line, and \n is the standard
+ * unix way of saying that (\r is only good
+ * if CRMOD is set, which it normally is).
+ */
+ if ((c == '\r') && his_state_is_wont(TELOPT_BINARY)) {
+ int nc = *netip;
+#ifdef ENCRYPTION
+ if (decrypt_input)
+ nc = (*decrypt_input)(nc & 0xff);
+#endif /* ENCRYPTION */
+#ifdef LINEMODE
+ /*
+ * If we are operating in linemode,
+ * convert to local end-of-line.
+ */
+ if (linemode && (ncc > 0) && (('\n' == nc) ||
+ ((0 == nc) && tty_iscrnl())) ) {
+ netip++; ncc--;
+ c = '\n';
+ } else
+#endif
+ {
+#ifdef ENCRYPTION
+ if (decrypt_input)
+ (void)(*decrypt_input)(-1);
+#endif /* ENCRYPTION */
+ state = TS_CR;
+ }
+ }
+ *pfrontp++ = c;
+ break;
+
+ case TS_IAC:
+gotiac: switch (c) {
+
+ /*
+ * Send the process on the pty side an
+ * interrupt. Do this with a NULL or
+ * interrupt char; depending on the tty mode.
+ */
+ case IP:
+ DIAG(TD_OPTIONS,
+ printoption("td: recv IAC", c));
+ interrupt();
+ break;
+
+ case BREAK:
+ DIAG(TD_OPTIONS,
+ printoption("td: recv IAC", c));
+ sendbrk();
+ break;
+
+ /*
+ * Are You There?
+ */
+ case AYT:
+ DIAG(TD_OPTIONS,
+ printoption("td: recv IAC", c));
+ recv_ayt();
+ break;
+
+ /*
+ * Abort Output
+ */
+ case AO:
+ {
+ DIAG(TD_OPTIONS,
+ printoption("td: recv IAC", c));
+ ptyflush(); /* half-hearted */
+ init_termbuf();
+
+ if (slctab[SLC_AO].sptr &&
+ *slctab[SLC_AO].sptr != (cc_t)(_POSIX_VDISABLE)) {
+ *pfrontp++ =
+ (unsigned char)*slctab[SLC_AO].sptr;
+ }
+
+ netclear(); /* clear buffer back */
+ *nfrontp++ = IAC;
+ *nfrontp++ = DM;
+ neturg = nfrontp-1; /* off by one XXX */
+ DIAG(TD_OPTIONS,
+ printoption("td: send IAC", DM));
+ break;
+ }
+
+ /*
+ * Erase Character and
+ * Erase Line
+ */
+ case EC:
+ case EL:
+ {
+ cc_t ch;
+
+ DIAG(TD_OPTIONS,
+ printoption("td: recv IAC", c));
+ ptyflush(); /* half-hearted */
+ init_termbuf();
+ if (c == EC)
+ ch = *slctab[SLC_EC].sptr;
+ else
+ ch = *slctab[SLC_EL].sptr;
+ if (ch != (cc_t)(_POSIX_VDISABLE))
+ *pfrontp++ = (unsigned char)ch;
+ break;
+ }
+
+ /*
+ * Check for urgent data...
+ */
+ case DM:
+ DIAG(TD_OPTIONS,
+ printoption("td: recv IAC", c));
+ SYNCHing = stilloob(net);
+ settimer(gotDM);
+ break;
+
+
+ /*
+ * Begin option subnegotiation...
+ */
+ case SB:
+ state = TS_SB;
+ SB_CLEAR();
+ continue;
+
+ case WILL:
+ state = TS_WILL;
+ continue;
+
+ case WONT:
+ state = TS_WONT;
+ continue;
+
+ case DO:
+ state = TS_DO;
+ continue;
+
+ case DONT:
+ state = TS_DONT;
+ continue;
+ case EOR:
+ if (his_state_is_will(TELOPT_EOR))
+ doeof();
+ break;
+
+ /*
+ * Handle RFC 10xx Telnet linemode option additions
+ * to command stream (EOF, SUSP, ABORT).
+ */
+ case xEOF:
+ doeof();
+ break;
+
+ case SUSP:
+ sendsusp();
+ break;
+
+ case ABORT:
+ sendbrk();
+ break;
+
+ case IAC:
+ *pfrontp++ = c;
+ break;
+ }
+ state = TS_DATA;
+ break;
+
+ case TS_SB:
+ if (c == IAC) {
+ state = TS_SE;
+ } else {
+ SB_ACCUM(c);
+ }
+ break;
+
+ case TS_SE:
+ if (c != SE) {
+ if (c != IAC) {
+ /*
+ * bad form of suboption negotiation.
+ * handle it in such a way as to avoid
+ * damage to local state. Parse
+ * suboption buffer found so far,
+ * then treat remaining stream as
+ * another command sequence.
+ */
+
+ /* for DIAGNOSTICS */
+ SB_ACCUM(IAC);
+ SB_ACCUM(c);
+ subpointer -= 2;
+
+ SB_TERM();
+ suboption();
+ state = TS_IAC;
+ goto gotiac;
+ }
+ SB_ACCUM(c);
+ state = TS_SB;
+ } else {
+ /* for DIAGNOSTICS */
+ SB_ACCUM(IAC);
+ SB_ACCUM(SE);
+ subpointer -= 2;
+
+ SB_TERM();
+ suboption(); /* handle sub-option */
+ state = TS_DATA;
+ }
+ break;
+
+ case TS_WILL:
+ willoption(c);
+ state = TS_DATA;
+ continue;
+
+ case TS_WONT:
+ wontoption(c);
+ state = TS_DATA;
+ continue;
+
+ case TS_DO:
+ dooption(c);
+ state = TS_DATA;
+ continue;
+
+ case TS_DONT:
+ dontoption(c);
+ state = TS_DATA;
+ continue;
+
+ default:
+ syslog(LOG_ERR, "telnetd: panic state=%d\n", state);
+ printf("telnetd: panic state=%d\n", state);
+ exit(1);
+ }
+ }
+#if defined(CRAY2) && defined(UNICOS5)
+ if (!linemode) {
+ char xptyobuf[BUFSIZ+NETSLOP];
+ char xbuf2[BUFSIZ];
+ register char *cp;
+ int n = pfrontp - opfrontp, oc;
+ memmove(xptyobuf, opfrontp, n);
+ pfrontp = opfrontp;
+ pfrontp += term_input(xptyobuf, pfrontp, n, BUFSIZ+NETSLOP,
+ xbuf2, &oc, BUFSIZ);
+ for (cp = xbuf2; oc > 0; --oc)
+ if ((*nfrontp++ = *cp++) == IAC)
+ *nfrontp++ = IAC;
+ }
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+} /* end of telrcv */
+
+/*
+ * The will/wont/do/dont state machines are based on Dave Borman's
+ * Telnet option processing state machine.
+ *
+ * These correspond to the following states:
+ * my_state = the last negotiated state
+ * want_state = what I want the state to go to
+ * want_resp = how many requests I have sent
+ * All state defaults are negative, and resp defaults to 0.
+ *
+ * When initiating a request to change state to new_state:
+ *
+ * if ((want_resp == 0 && new_state == my_state) || want_state == new_state) {
+ * do nothing;
+ * } else {
+ * want_state = new_state;
+ * send new_state;
+ * want_resp++;
+ * }
+ *
+ * When receiving new_state:
+ *
+ * if (want_resp) {
+ * want_resp--;
+ * if (want_resp && (new_state == my_state))
+ * want_resp--;
+ * }
+ * if ((want_resp == 0) && (new_state != want_state)) {
+ * if (ok_to_switch_to new_state)
+ * want_state = new_state;
+ * else
+ * want_resp++;
+ * send want_state;
+ * }
+ * my_state = new_state;
+ *
+ * Note that new_state is implied in these functions by the function itself.
+ * will and do imply positive new_state, wont and dont imply negative.
+ *
+ * Finally, there is one catch. If we send a negative response to a
+ * positive request, my_state will be the positive while want_state will
+ * remain negative. my_state will revert to negative when the negative
+ * acknowlegment arrives from the peer. Thus, my_state generally tells
+ * us not only the last negotiated state, but also tells us what the peer
+ * wants to be doing as well. It is important to understand this difference
+ * as we may wish to be processing data streams based on our desired state
+ * (want_state) or based on what the peer thinks the state is (my_state).
+ *
+ * This all works fine because if the peer sends a positive request, the data
+ * that we receive prior to negative acknowlegment will probably be affected
+ * by the positive state, and we can process it as such (if we can; if we
+ * can't then it really doesn't matter). If it is that important, then the
+ * peer probably should be buffering until this option state negotiation
+ * is complete.
+ *
+ */
+ void
+send_do(option, init)
+ int option, init;
+{
+ if (init) {
+ if ((do_dont_resp[option] == 0 && his_state_is_will(option)) ||
+ his_want_state_is_will(option))
+ return;
+ /*
+ * Special case for TELOPT_TM: We send a DO, but pretend
+ * that we sent a DONT, so that we can send more DOs if
+ * we want to.
+ */
+ if (option == TELOPT_TM)
+ set_his_want_state_wont(option);
+ else
+ set_his_want_state_will(option);
+ do_dont_resp[option]++;
+ }
+ (void) sprintf(nfrontp, (char *)doopt, option);
+ nfrontp += sizeof (dont) - 2;
+
+ DIAG(TD_OPTIONS, printoption("td: send do", option));
+}
+
+#ifdef AUTHENTICATION
+extern void auth_request();
+#endif
+#ifdef LINEMODE
+extern void doclientstat();
+#endif
+#ifdef ENCRYPTION
+extern void encrypt_send_support();
+#endif /* ENCRYPTION */
+
+ void
+willoption(option)
+ int option;
+{
+ int changeok = 0;
+ void (*func)() = 0;
+
+ /*
+ * process input from peer.
+ */
+
+ DIAG(TD_OPTIONS, printoption("td: recv will", option));
+
+ if (do_dont_resp[option]) {
+ do_dont_resp[option]--;
+ if (do_dont_resp[option] && his_state_is_will(option))
+ do_dont_resp[option]--;
+ }
+ if (do_dont_resp[option] == 0) {
+ if (his_want_state_is_wont(option)) {
+ switch (option) {
+
+ case TELOPT_BINARY:
+ init_termbuf();
+ tty_binaryin(1);
+ set_termbuf();
+ changeok++;
+ break;
+
+ case TELOPT_ECHO:
+ /*
+ * See comments below for more info.
+ */
+ not42 = 0; /* looks like a 4.2 system */
+ break;
+
+ case TELOPT_TM:
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ /*
+ * This telnetd implementation does not really
+ * support timing marks, it just uses them to
+ * support the kludge linemode stuff. If we
+ * receive a will or wont TM in response to our
+ * do TM request that may have been sent to
+ * determine kludge linemode support, process
+ * it, otherwise TM should get a negative
+ * response back.
+ */
+ /*
+ * Handle the linemode kludge stuff.
+ * If we are not currently supporting any
+ * linemode at all, then we assume that this
+ * is the client telling us to use kludge
+ * linemode in response to our query. Set the
+ * linemode type that is to be supported, note
+ * that the client wishes to use linemode, and
+ * eat the will TM as though it never arrived.
+ */
+ if (lmodetype < KLUDGE_LINEMODE) {
+ lmodetype = KLUDGE_LINEMODE;
+ clientstat(TELOPT_LINEMODE, WILL, 0);
+ send_wont(TELOPT_SGA, 1);
+ } else if (lmodetype == NO_AUTOKLUDGE) {
+ lmodetype = KLUDGE_OK;
+ }
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+ /*
+ * We never respond to a WILL TM, and
+ * we leave the state WONT.
+ */
+ return;
+
+ case TELOPT_LFLOW:
+ /*
+ * If we are going to support flow control
+ * option, then don't worry peer that we can't
+ * change the flow control characters.
+ */
+ slctab[SLC_XON].defset.flag &= ~SLC_LEVELBITS;
+ slctab[SLC_XON].defset.flag |= SLC_DEFAULT;
+ slctab[SLC_XOFF].defset.flag &= ~SLC_LEVELBITS;
+ slctab[SLC_XOFF].defset.flag |= SLC_DEFAULT;
+ case TELOPT_TTYPE:
+ case TELOPT_SGA:
+ case TELOPT_NAWS:
+ case TELOPT_TSPEED:
+ case TELOPT_XDISPLOC:
+ case TELOPT_NEW_ENVIRON:
+ case TELOPT_OLD_ENVIRON:
+ changeok++;
+ break;
+
+#ifdef LINEMODE
+ case TELOPT_LINEMODE:
+# ifdef KLUDGELINEMODE
+ /*
+ * Note client's desire to use linemode.
+ */
+ lmodetype = REAL_LINEMODE;
+# endif /* KLUDGELINEMODE */
+ func = doclientstat;
+ changeok++;
+ break;
+#endif /* LINEMODE */
+
+#ifdef AUTHENTICATION
+ case TELOPT_AUTHENTICATION:
+ func = auth_request;
+ changeok++;
+ break;
+#endif
+
+#ifdef ENCRYPTION
+ case TELOPT_ENCRYPT:
+ func = encrypt_send_support;
+ changeok++;
+ break;
+#endif /* ENCRYPTION */
+
+ default:
+ break;
+ }
+ if (changeok) {
+ set_his_want_state_will(option);
+ send_do(option, 0);
+ } else {
+ do_dont_resp[option]++;
+ send_dont(option, 0);
+ }
+ } else {
+ /*
+ * Option processing that should happen when
+ * we receive conformation of a change in
+ * state that we had requested.
+ */
+ switch (option) {
+ case TELOPT_ECHO:
+ not42 = 0; /* looks like a 4.2 system */
+ /*
+ * Egads, he responded "WILL ECHO". Turn
+ * it off right now!
+ */
+ send_dont(option, 1);
+ /*
+ * "WILL ECHO". Kludge upon kludge!
+ * A 4.2 client is now echoing user input at
+ * the tty. This is probably undesireable and
+ * it should be stopped. The client will
+ * respond WONT TM to the DO TM that we send to
+ * check for kludge linemode. When the WONT TM
+ * arrives, linemode will be turned off and a
+ * change propogated to the pty. This change
+ * will cause us to process the new pty state
+ * in localstat(), which will notice that
+ * linemode is off and send a WILL ECHO
+ * so that we are properly in character mode and
+ * all is well.
+ */
+ break;
+#ifdef LINEMODE
+ case TELOPT_LINEMODE:
+# ifdef KLUDGELINEMODE
+ /*
+ * Note client's desire to use linemode.
+ */
+ lmodetype = REAL_LINEMODE;
+# endif /* KLUDGELINEMODE */
+ func = doclientstat;
+ break;
+#endif /* LINEMODE */
+
+#ifdef AUTHENTICATION
+ case TELOPT_AUTHENTICATION:
+ func = auth_request;
+ break;
+#endif
+
+#ifdef ENCRYPTION
+ case TELOPT_ENCRYPT:
+ func = encrypt_send_support;
+ break;
+#endif /* ENCRYPTION */
+ case TELOPT_LFLOW:
+ func = flowstat;
+ break;
+ }
+ }
+ }
+ set_his_state_will(option);
+ if (func)
+ (*func)();
+} /* end of willoption */
+
+ void
+send_dont(option, init)
+ int option, init;
+{
+ if (init) {
+ if ((do_dont_resp[option] == 0 && his_state_is_wont(option)) ||
+ his_want_state_is_wont(option))
+ return;
+ set_his_want_state_wont(option);
+ do_dont_resp[option]++;
+ }
+ (void) sprintf(nfrontp, (char *)dont, option);
+ nfrontp += sizeof (doopt) - 2;
+
+ DIAG(TD_OPTIONS, printoption("td: send dont", option));
+}
+
+ void
+wontoption(option)
+ int option;
+{
+ /*
+ * Process client input.
+ */
+
+ DIAG(TD_OPTIONS, printoption("td: recv wont", option));
+
+ if (do_dont_resp[option]) {
+ do_dont_resp[option]--;
+ if (do_dont_resp[option] && his_state_is_wont(option))
+ do_dont_resp[option]--;
+ }
+ if (do_dont_resp[option] == 0) {
+ if (his_want_state_is_will(option)) {
+ /* it is always ok to change to negative state */
+ switch (option) {
+ case TELOPT_ECHO:
+ not42 = 1; /* doesn't seem to be a 4.2 system */
+ break;
+
+ case TELOPT_BINARY:
+ init_termbuf();
+ tty_binaryin(0);
+ set_termbuf();
+ break;
+
+#ifdef LINEMODE
+ case TELOPT_LINEMODE:
+# ifdef KLUDGELINEMODE
+ /*
+ * If real linemode is supported, then client is
+ * asking to turn linemode off.
+ */
+ if (lmodetype != REAL_LINEMODE)
+ break;
+# endif /* KLUDGELINEMODE */
+ clientstat(TELOPT_LINEMODE, WONT, 0);
+ break;
+#endif /* LINEMODE */
+
+ case TELOPT_TM:
+ /*
+ * If we get a WONT TM, and had sent a DO TM,
+ * don't respond with a DONT TM, just leave it
+ * as is. Short circut the state machine to
+ * achive this.
+ */
+ set_his_want_state_wont(TELOPT_TM);
+ return;
+
+ case TELOPT_LFLOW:
+ /*
+ * If we are not going to support flow control
+ * option, then let peer know that we can't
+ * change the flow control characters.
+ */
+ slctab[SLC_XON].defset.flag &= ~SLC_LEVELBITS;
+ slctab[SLC_XON].defset.flag |= SLC_CANTCHANGE;
+ slctab[SLC_XOFF].defset.flag &= ~SLC_LEVELBITS;
+ slctab[SLC_XOFF].defset.flag |= SLC_CANTCHANGE;
+ break;
+
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+ auth_finished(0, AUTH_REJECT);
+ break;
+#endif
+
+ /*
+ * For options that we might spin waiting for
+ * sub-negotiation, if the client turns off the
+ * option rather than responding to the request,
+ * we have to treat it here as if we got a response
+ * to the sub-negotiation, (by updating the timers)
+ * so that we'll break out of the loop.
+ */
+ case TELOPT_TTYPE:
+ settimer(ttypesubopt);
+ break;
+
+ case TELOPT_TSPEED:
+ settimer(tspeedsubopt);
+ break;
+
+ case TELOPT_XDISPLOC:
+ settimer(xdisplocsubopt);
+ break;
+
+ case TELOPT_OLD_ENVIRON:
+ settimer(oenvironsubopt);
+ break;
+
+ case TELOPT_NEW_ENVIRON:
+ settimer(environsubopt);
+ break;
+
+ default:
+ break;
+ }
+ set_his_want_state_wont(option);
+ if (his_state_is_will(option))
+ send_dont(option, 0);
+ } else {
+ switch (option) {
+ case TELOPT_TM:
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ if (lmodetype < NO_AUTOKLUDGE) {
+ lmodetype = NO_LINEMODE;
+ clientstat(TELOPT_LINEMODE, WONT, 0);
+ send_will(TELOPT_SGA, 1);
+ send_will(TELOPT_ECHO, 1);
+ }
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+ break;
+
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+ auth_finished(0, AUTH_REJECT);
+ break;
+#endif
+ default:
+ break;
+ }
+ }
+ }
+ set_his_state_wont(option);
+
+} /* end of wontoption */
+
+ void
+send_will(option, init)
+ int option, init;
+{
+ if (init) {
+ if ((will_wont_resp[option] == 0 && my_state_is_will(option))||
+ my_want_state_is_will(option))
+ return;
+ set_my_want_state_will(option);
+ will_wont_resp[option]++;
+ }
+ (void) sprintf(nfrontp, (char *)will, option);
+ nfrontp += sizeof (doopt) - 2;
+
+ DIAG(TD_OPTIONS, printoption("td: send will", option));
+}
+
+#if !defined(LINEMODE) || !defined(KLUDGELINEMODE)
+/*
+ * When we get a DONT SGA, we will try once to turn it
+ * back on. If the other side responds DONT SGA, we
+ * leave it at that. This is so that when we talk to
+ * clients that understand KLUDGELINEMODE but not LINEMODE,
+ * we'll keep them in char-at-a-time mode.
+ */
+int turn_on_sga = 0;
+#endif
+
+ void
+dooption(option)
+ int option;
+{
+ int changeok = 0;
+
+ /*
+ * Process client input.
+ */
+
+ DIAG(TD_OPTIONS, printoption("td: recv do", option));
+
+ if (will_wont_resp[option]) {
+ will_wont_resp[option]--;
+ if (will_wont_resp[option] && my_state_is_will(option))
+ will_wont_resp[option]--;
+ }
+ if ((will_wont_resp[option] == 0) && (my_want_state_is_wont(option))) {
+ switch (option) {
+ case TELOPT_ECHO:
+#ifdef LINEMODE
+# ifdef KLUDGELINEMODE
+ if (lmodetype == NO_LINEMODE)
+# else
+ if (his_state_is_wont(TELOPT_LINEMODE))
+# endif
+#endif
+ {
+ init_termbuf();
+ tty_setecho(1);
+ set_termbuf();
+ }
+ changeok++;
+ break;
+
+ case TELOPT_BINARY:
+ init_termbuf();
+ tty_binaryout(1);
+ set_termbuf();
+ changeok++;
+ break;
+
+ case TELOPT_SGA:
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ /*
+ * If kludge linemode is in use, then we must
+ * process an incoming do SGA for linemode
+ * purposes.
+ */
+ if (lmodetype == KLUDGE_LINEMODE) {
+ /*
+ * Receipt of "do SGA" in kludge
+ * linemode is the peer asking us to
+ * turn off linemode. Make note of
+ * the request.
+ */
+ clientstat(TELOPT_LINEMODE, WONT, 0);
+ /*
+ * If linemode did not get turned off
+ * then don't tell peer that we did.
+ * Breaking here forces a wont SGA to
+ * be returned.
+ */
+ if (linemode)
+ break;
+ }
+#else
+ turn_on_sga = 0;
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+ changeok++;
+ break;
+
+ case TELOPT_STATUS:
+ changeok++;
+ break;
+
+ case TELOPT_TM:
+ /*
+ * Special case for TM. We send a WILL, but
+ * pretend we sent a WONT.
+ */
+ send_will(option, 0);
+ set_my_want_state_wont(option);
+ set_my_state_wont(option);
+ return;
+
+ case TELOPT_LOGOUT:
+ /*
+ * When we get a LOGOUT option, respond
+ * with a WILL LOGOUT, make sure that
+ * it gets written out to the network,
+ * and then just go away...
+ */
+ set_my_want_state_will(TELOPT_LOGOUT);
+ send_will(TELOPT_LOGOUT, 0);
+ set_my_state_will(TELOPT_LOGOUT);
+ (void)netflush();
+ cleanup(0);
+ /* NOT REACHED */
+ break;
+
+#ifdef ENCRYPTION
+ case TELOPT_ENCRYPT:
+ changeok++;
+ break;
+#endif /* ENCRYPTION */
+ case TELOPT_LINEMODE:
+ case TELOPT_TTYPE:
+ case TELOPT_NAWS:
+ case TELOPT_TSPEED:
+ case TELOPT_LFLOW:
+ case TELOPT_XDISPLOC:
+#ifdef TELOPT_ENVIRON
+ case TELOPT_NEW_ENVIRON:
+#endif
+ case TELOPT_OLD_ENVIRON:
+ default:
+ break;
+ }
+ if (changeok) {
+ set_my_want_state_will(option);
+ send_will(option, 0);
+ } else {
+ will_wont_resp[option]++;
+ send_wont(option, 0);
+ }
+ }
+ set_my_state_will(option);
+
+} /* end of dooption */
+
+ void
+send_wont(option, init)
+ int option, init;
+{
+ if (init) {
+ if ((will_wont_resp[option] == 0 && my_state_is_wont(option)) ||
+ my_want_state_is_wont(option))
+ return;
+ set_my_want_state_wont(option);
+ will_wont_resp[option]++;
+ }
+ (void) sprintf(nfrontp, (char *)wont, option);
+ nfrontp += sizeof (wont) - 2;
+
+ DIAG(TD_OPTIONS, printoption("td: send wont", option));
+}
+
+ void
+dontoption(option)
+ int option;
+{
+ /*
+ * Process client input.
+ */
+
+
+ DIAG(TD_OPTIONS, printoption("td: recv dont", option));
+
+ if (will_wont_resp[option]) {
+ will_wont_resp[option]--;
+ if (will_wont_resp[option] && my_state_is_wont(option))
+ will_wont_resp[option]--;
+ }
+ if ((will_wont_resp[option] == 0) && (my_want_state_is_will(option))) {
+ switch (option) {
+ case TELOPT_BINARY:
+ init_termbuf();
+ tty_binaryout(0);
+ set_termbuf();
+ break;
+
+ case TELOPT_ECHO: /* we should stop echoing */
+#ifdef LINEMODE
+# ifdef KLUDGELINEMODE
+ if ((lmodetype != REAL_LINEMODE) &&
+ (lmodetype != KLUDGE_LINEMODE))
+# else
+ if (his_state_is_wont(TELOPT_LINEMODE))
+# endif
+#endif
+ {
+ init_termbuf();
+ tty_setecho(0);
+ set_termbuf();
+ }
+ break;
+
+ case TELOPT_SGA:
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ /*
+ * If kludge linemode is in use, then we
+ * must process an incoming do SGA for
+ * linemode purposes.
+ */
+ if ((lmodetype == KLUDGE_LINEMODE) ||
+ (lmodetype == KLUDGE_OK)) {
+ /*
+ * The client is asking us to turn
+ * linemode on.
+ */
+ lmodetype = KLUDGE_LINEMODE;
+ clientstat(TELOPT_LINEMODE, WILL, 0);
+ /*
+ * If we did not turn line mode on,
+ * then what do we say? Will SGA?
+ * This violates design of telnet.
+ * Gross. Very Gross.
+ */
+ }
+ break;
+#else
+ set_my_want_state_wont(option);
+ if (my_state_is_will(option))
+ send_wont(option, 0);
+ set_my_state_wont(option);
+ if (turn_on_sga ^= 1)
+ send_will(option, 1);
+ return;
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+
+ default:
+ break;
+ }
+
+ set_my_want_state_wont(option);
+ if (my_state_is_will(option))
+ send_wont(option, 0);
+ }
+ set_my_state_wont(option);
+
+} /* end of dontoption */
+
+#ifdef ENV_HACK
+int env_ovar = -1;
+int env_ovalue = -1;
+#else /* ENV_HACK */
+# define env_ovar OLD_ENV_VAR
+# define env_ovalue OLD_ENV_VALUE
+#endif /* ENV_HACK */
+
+/*
+ * suboption()
+ *
+ * Look at the sub-option buffer, and try to be helpful to the other
+ * side.
+ *
+ * Currently we recognize:
+ *
+ * Terminal type is
+ * Linemode
+ * Window size
+ * Terminal speed
+ */
+ void
+suboption()
+{
+ register int subchar;
+
+ DIAG(TD_OPTIONS, {netflush(); printsub('<', subpointer, SB_LEN()+2);});
+
+ subchar = SB_GET();
+ switch (subchar) {
+ case TELOPT_TSPEED: {
+ register int xspeed, rspeed;
+
+ if (his_state_is_wont(TELOPT_TSPEED)) /* Ignore if option disabled */
+ break;
+
+ settimer(tspeedsubopt);
+
+ if (SB_EOF() || SB_GET() != TELQUAL_IS)
+ return;
+
+ xspeed = atoi((char *)subpointer);
+
+ while (SB_GET() != ',' && !SB_EOF());
+ if (SB_EOF())
+ return;
+
+ rspeed = atoi((char *)subpointer);
+ clientstat(TELOPT_TSPEED, xspeed, rspeed);
+
+ break;
+
+ } /* end of case TELOPT_TSPEED */
+
+ case TELOPT_TTYPE: { /* Yaaaay! */
+ static char terminalname[41];
+
+ if (his_state_is_wont(TELOPT_TTYPE)) /* Ignore if option disabled */
+ break;
+ settimer(ttypesubopt);
+
+ if (SB_EOF() || SB_GET() != TELQUAL_IS) {
+ return; /* ??? XXX but, this is the most robust */
+ }
+
+ terminaltype = terminalname;
+
+ while ((terminaltype < (terminalname + sizeof terminalname-1)) &&
+ !SB_EOF()) {
+ register int c;
+
+ c = SB_GET();
+ if (isupper(c)) {
+ c = tolower(c);
+ }
+ *terminaltype++ = c; /* accumulate name */
+ }
+ *terminaltype = 0;
+ terminaltype = terminalname;
+ break;
+ } /* end of case TELOPT_TTYPE */
+
+ case TELOPT_NAWS: {
+ register int xwinsize, ywinsize;
+
+ if (his_state_is_wont(TELOPT_NAWS)) /* Ignore if option disabled */
+ break;
+
+ if (SB_EOF())
+ return;
+ xwinsize = SB_GET() << 8;
+ if (SB_EOF())
+ return;
+ xwinsize |= SB_GET();
+ if (SB_EOF())
+ return;
+ ywinsize = SB_GET() << 8;
+ if (SB_EOF())
+ return;
+ ywinsize |= SB_GET();
+ clientstat(TELOPT_NAWS, xwinsize, ywinsize);
+
+ break;
+
+ } /* end of case TELOPT_NAWS */
+
+#ifdef LINEMODE
+ case TELOPT_LINEMODE: {
+ register int request;
+
+ if (his_state_is_wont(TELOPT_LINEMODE)) /* Ignore if option disabled */
+ break;
+ /*
+ * Process linemode suboptions.
+ */
+ if (SB_EOF())
+ break; /* garbage was sent */
+ request = SB_GET(); /* get will/wont */
+
+ if (SB_EOF())
+ break; /* another garbage check */
+
+ if (request == LM_SLC) { /* SLC is not preceeded by WILL or WONT */
+ /*
+ * Process suboption buffer of slc's
+ */
+ start_slc(1);
+ do_opt_slc(subpointer, subend - subpointer);
+ (void) end_slc(0);
+ break;
+ } else if (request == LM_MODE) {
+ if (SB_EOF())
+ return;
+ useeditmode = SB_GET(); /* get mode flag */
+ clientstat(LM_MODE, 0, 0);
+ break;
+ }
+
+ if (SB_EOF())
+ break;
+ switch (SB_GET()) { /* what suboption? */
+ case LM_FORWARDMASK:
+ /*
+ * According to spec, only server can send request for
+ * forwardmask, and client can only return a positive response.
+ * So don't worry about it.
+ */
+
+ default:
+ break;
+ }
+ break;
+ } /* end of case TELOPT_LINEMODE */
+#endif
+ case TELOPT_STATUS: {
+ int mode;
+
+ if (SB_EOF())
+ break;
+ mode = SB_GET();
+ switch (mode) {
+ case TELQUAL_SEND:
+ if (my_state_is_will(TELOPT_STATUS))
+ send_status();
+ break;
+
+ case TELQUAL_IS:
+ break;
+
+ default:
+ break;
+ }
+ break;
+ } /* end of case TELOPT_STATUS */
+
+ case TELOPT_XDISPLOC: {
+ if (SB_EOF() || SB_GET() != TELQUAL_IS)
+ return;
+ settimer(xdisplocsubopt);
+ subpointer[SB_LEN()] = '\0';
+ (void)setenv("DISPLAY", (char *)subpointer, 1);
+ break;
+ } /* end of case TELOPT_XDISPLOC */
+
+#ifdef TELOPT_NEW_ENVIRON
+ case TELOPT_NEW_ENVIRON:
+#endif
+ case TELOPT_OLD_ENVIRON: {
+ register int c;
+ register char *cp, *varp, *valp;
+
+ if (SB_EOF())
+ return;
+ c = SB_GET();
+ if (c == TELQUAL_IS) {
+ if (subchar == TELOPT_OLD_ENVIRON)
+ settimer(oenvironsubopt);
+ else
+ settimer(environsubopt);
+ } else if (c != TELQUAL_INFO) {
+ return;
+ }
+
+#ifdef TELOPT_NEW_ENVIRON
+ if (subchar == TELOPT_NEW_ENVIRON) {
+ while (!SB_EOF()) {
+ c = SB_GET();
+ if ((c == NEW_ENV_VAR) || (c == ENV_USERVAR))
+ break;
+ }
+ } else
+#endif
+ {
+#ifdef ENV_HACK
+ /*
+ * We only want to do this if we haven't already decided
+ * whether or not the other side has its VALUE and VAR
+ * reversed.
+ */
+ if (env_ovar < 0) {
+ register int last = -1; /* invalid value */
+ int empty = 0;
+ int got_var = 0, got_value = 0, got_uservar = 0;
+
+ /*
+ * The other side might have its VALUE and VAR values
+ * reversed. To be interoperable, we need to determine
+ * which way it is. If the first recognized character
+ * is a VAR or VALUE, then that will tell us what
+ * type of client it is. If the fist recognized
+ * character is a USERVAR, then we continue scanning
+ * the suboption looking for two consecutive
+ * VAR or VALUE fields. We should not get two
+ * consecutive VALUE fields, so finding two
+ * consecutive VALUE or VAR fields will tell us
+ * what the client is.
+ */
+ SB_SAVE();
+ while (!SB_EOF()) {
+ c = SB_GET();
+ switch(c) {
+ case OLD_ENV_VAR:
+ if (last < 0 || last == OLD_ENV_VAR
+ || (empty && (last == OLD_ENV_VALUE)))
+ goto env_ovar_ok;
+ got_var++;
+ last = OLD_ENV_VAR;
+ break;
+ case OLD_ENV_VALUE:
+ if (last < 0 || last == OLD_ENV_VALUE
+ || (empty && (last == OLD_ENV_VAR)))
+ goto env_ovar_wrong;
+ got_value++;
+ last = OLD_ENV_VALUE;
+ break;
+ case ENV_USERVAR:
+ /* count strings of USERVAR as one */
+ if (last != ENV_USERVAR)
+ got_uservar++;
+ if (empty) {
+ if (last == OLD_ENV_VALUE)
+ goto env_ovar_ok;
+ if (last == OLD_ENV_VAR)
+ goto env_ovar_wrong;
+ }
+ last = ENV_USERVAR;
+ break;
+ case ENV_ESC:
+ if (!SB_EOF())
+ c = SB_GET();
+ /* FALL THROUGH */
+ default:
+ empty = 0;
+ continue;
+ }
+ empty = 1;
+ }
+ if (empty) {
+ if (last == OLD_ENV_VALUE)
+ goto env_ovar_ok;
+ if (last == OLD_ENV_VAR)
+ goto env_ovar_wrong;
+ }
+ /*
+ * Ok, the first thing was a USERVAR, and there
+ * are not two consecutive VAR or VALUE commands,
+ * and none of the VAR or VALUE commands are empty.
+ * If the client has sent us a well-formed option,
+ * then the number of VALUEs received should always
+ * be less than or equal to the number of VARs and
+ * USERVARs received.
+ *
+ * If we got exactly as many VALUEs as VARs and
+ * USERVARs, the client has the same definitions.
+ *
+ * If we got exactly as many VARs as VALUEs and
+ * USERVARS, the client has reversed definitions.
+ */
+ if (got_uservar + got_var == got_value) {
+ env_ovar_ok:
+ env_ovar = OLD_ENV_VAR;
+ env_ovalue = OLD_ENV_VALUE;
+ } else if (got_uservar + got_value == got_var) {
+ env_ovar_wrong:
+ env_ovar = OLD_ENV_VALUE;
+ env_ovalue = OLD_ENV_VAR;
+ DIAG(TD_OPTIONS, {sprintf(nfrontp,
+ "ENVIRON VALUE and VAR are reversed!\r\n");
+ nfrontp += strlen(nfrontp);});
+
+ }
+ }
+ SB_RESTORE();
+#endif
+
+ while (!SB_EOF()) {
+ c = SB_GET();
+ if ((c == env_ovar) || (c == ENV_USERVAR))
+ break;
+ }
+ }
+
+ if (SB_EOF())
+ return;
+
+ cp = varp = (char *)subpointer;
+ valp = 0;
+
+ while (!SB_EOF()) {
+ c = SB_GET();
+ if (subchar == TELOPT_OLD_ENVIRON) {
+ if (c == env_ovar)
+ c = NEW_ENV_VAR;
+ else if (c == env_ovalue)
+ c = NEW_ENV_VALUE;
+ }
+ switch (c) {
+
+ case NEW_ENV_VALUE:
+ *cp = '\0';
+ cp = valp = (char *)subpointer;
+ break;
+
+ case NEW_ENV_VAR:
+ case ENV_USERVAR:
+ *cp = '\0';
+ if (valp)
+ (void)setenv(varp, valp, 1);
+ else
+ unsetenv(varp);
+ cp = varp = (char *)subpointer;
+ valp = 0;
+ break;
+
+ case ENV_ESC:
+ if (SB_EOF())
+ break;
+ c = SB_GET();
+ /* FALL THROUGH */
+ default:
+ *cp++ = c;
+ break;
+ }
+ }
+ *cp = '\0';
+ if (valp)
+ (void)setenv(varp, valp, 1);
+ else
+ unsetenv(varp);
+ break;
+ } /* end of case TELOPT_NEW_ENVIRON */
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+ if (SB_EOF())
+ break;
+ switch(SB_GET()) {
+ case TELQUAL_SEND:
+ case TELQUAL_REPLY:
+ /*
+ * These are sent by us and cannot be sent by
+ * the client.
+ */
+ break;
+ case TELQUAL_IS:
+ auth_is(subpointer, SB_LEN());
+ break;
+ case TELQUAL_NAME:
+ auth_name(subpointer, SB_LEN());
+ break;
+ }
+ break;
+#endif
+#ifdef ENCRYPTION
+ case TELOPT_ENCRYPT:
+ if (SB_EOF())
+ break;
+ switch(SB_GET()) {
+ case ENCRYPT_SUPPORT:
+ encrypt_support(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_IS:
+ encrypt_is(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_REPLY:
+ encrypt_reply(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_START:
+ encrypt_start(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_END:
+ encrypt_end();
+ break;
+ case ENCRYPT_REQSTART:
+ encrypt_request_start(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_REQEND:
+ /*
+ * We can always send an REQEND so that we cannot
+ * get stuck encrypting. We should only get this
+ * if we have been able to get in the correct mode
+ * anyhow.
+ */
+ encrypt_request_end();
+ break;
+ case ENCRYPT_ENC_KEYID:
+ encrypt_enc_keyid(subpointer, SB_LEN());
+ break;
+ case ENCRYPT_DEC_KEYID:
+ encrypt_dec_keyid(subpointer, SB_LEN());
+ break;
+ default:
+ break;
+ }
+ break;
+#endif /* ENCRYPTION */
+
+ default:
+ break;
+ } /* end of switch */
+
+} /* end of suboption */
+
+ void
+doclientstat()
+{
+ clientstat(TELOPT_LINEMODE, WILL, 0);
+}
+
+#define ADD(c) *ncp++ = c
+#define ADD_DATA(c) { *ncp++ = c; if (c == SE || c == IAC) *ncp++ = c; }
+ void
+send_status()
+{
+ unsigned char statusbuf[256];
+ register unsigned char *ncp;
+ register unsigned char i;
+
+ ncp = statusbuf;
+
+ netflush(); /* get rid of anything waiting to go out */
+
+ ADD(IAC);
+ ADD(SB);
+ ADD(TELOPT_STATUS);
+ ADD(TELQUAL_IS);
+
+ /*
+ * We check the want_state rather than the current state,
+ * because if we received a DO/WILL for an option that we
+ * don't support, and the other side didn't send a DONT/WONT
+ * in response to our WONT/DONT, then the "state" will be
+ * WILL/DO, and the "want_state" will be WONT/DONT. We
+ * need to go by the latter.
+ */
+ for (i = 0; i < (unsigned char)NTELOPTS; i++) {
+ if (my_want_state_is_will(i)) {
+ ADD(WILL);
+ ADD_DATA(i);
+ }
+ if (his_want_state_is_will(i)) {
+ ADD(DO);
+ ADD_DATA(i);
+ }
+ }
+
+ if (his_want_state_is_will(TELOPT_LFLOW)) {
+ ADD(SB);
+ ADD(TELOPT_LFLOW);
+ if (flowmode) {
+ ADD(LFLOW_ON);
+ } else {
+ ADD(LFLOW_OFF);
+ }
+ ADD(SE);
+
+ if (restartany >= 0) {
+ ADD(SB);
+ ADD(TELOPT_LFLOW);
+ if (restartany) {
+ ADD(LFLOW_RESTART_ANY);
+ } else {
+ ADD(LFLOW_RESTART_XON);
+ }
+ ADD(SE);
+ }
+ }
+
+#ifdef LINEMODE
+ if (his_want_state_is_will(TELOPT_LINEMODE)) {
+ unsigned char *cp, *cpe;
+ int len;
+
+ ADD(SB);
+ ADD(TELOPT_LINEMODE);
+ ADD(LM_MODE);
+ ADD_DATA(editmode);
+ ADD(SE);
+
+ ADD(SB);
+ ADD(TELOPT_LINEMODE);
+ ADD(LM_SLC);
+ start_slc(0);
+ send_slc();
+ len = end_slc(&cp);
+ for (cpe = cp + len; cp < cpe; cp++)
+ ADD_DATA(*cp);
+ ADD(SE);
+ }
+#endif /* LINEMODE */
+
+ ADD(IAC);
+ ADD(SE);
+
+ writenet(statusbuf, ncp - statusbuf);
+ netflush(); /* Send it on its way */
+
+ DIAG(TD_OPTIONS,
+ {printsub('>', statusbuf, ncp - statusbuf); netflush();});
+}
diff --git a/contrib/telnet/telnetd/sys_term.c b/contrib/telnet/telnetd/sys_term.c
new file mode 100644
index 0000000..67a2f94
--- /dev/null
+++ b/contrib/telnet/telnetd/sys_term.c
@@ -0,0 +1,2303 @@
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)sys_term.c 8.4+1 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#include "telnetd.h"
+#include "pathnames.h"
+
+#if defined(AUTHENTICATION)
+#include <libtelnet/auth.h>
+#endif
+
+#if defined(CRAY) || defined(__hpux)
+# define PARENT_DOES_UTMP
+#endif
+
+#ifdef NEWINIT
+#include <initreq.h>
+int utmp_len = MAXHOSTNAMELEN; /* sizeof(init_request.host) */
+#else /* NEWINIT*/
+# ifdef UTMPX
+# include <utmpx.h>
+struct utmpx wtmp;
+# else
+# include <utmp.h>
+struct utmp wtmp;
+# endif /* UTMPX */
+
+int utmp_len = sizeof(wtmp.ut_host);
+# ifndef PARENT_DOES_UTMP
+char wtmpf[] = "/usr/adm/wtmp";
+char utmpf[] = "/etc/utmp";
+# else /* PARENT_DOES_UTMP */
+char wtmpf[] = "/etc/wtmp";
+# endif /* PARENT_DOES_UTMP */
+
+# ifdef CRAY
+#include <tmpdir.h>
+#include <sys/wait.h>
+# if (UNICOS_LVL == '7.0') || (UNICOS_LVL == '7.1')
+# define UNICOS7x
+# endif
+
+# ifdef UNICOS7x
+#include <sys/sysv.h>
+#include <sys/secstat.h>
+extern int secflag;
+extern struct sysv sysv;
+# endif /* UNICOS7x */
+# endif /* CRAY */
+#endif /* NEWINIT */
+
+#ifdef STREAMSPTY
+#include <sac.h>
+#include <sys/stropts.h>
+#endif
+
+#define SCPYN(a, b) (void) strncpy(a, b, sizeof(a))
+#define SCMPN(a, b) strncmp(a, b, sizeof(a))
+
+#ifdef STREAMS
+#include <sys/stream.h>
+#endif
+#ifdef __hpux
+#include <sys/resource.h>
+#include <sys/proc.h>
+#endif
+#include <sys/tty.h>
+#ifdef t_erase
+#undef t_erase
+#undef t_kill
+#undef t_intrc
+#undef t_quitc
+#undef t_startc
+#undef t_stopc
+#undef t_eofc
+#undef t_brkc
+#undef t_suspc
+#undef t_dsuspc
+#undef t_rprntc
+#undef t_flushc
+#undef t_werasc
+#undef t_lnextc
+#endif
+
+#if defined(UNICOS5) && defined(CRAY2) && !defined(EXTPROC)
+# define EXTPROC 0400
+#endif
+
+#ifndef USE_TERMIO
+struct termbuf {
+ struct sgttyb sg;
+ struct tchars tc;
+ struct ltchars ltc;
+ int state;
+ int lflags;
+} termbuf, termbuf2;
+# define cfsetospeed(tp, val) (tp)->sg.sg_ospeed = (val)
+# define cfsetispeed(tp, val) (tp)->sg.sg_ispeed = (val)
+# define cfgetospeed(tp) (tp)->sg.sg_ospeed
+# define cfgetispeed(tp) (tp)->sg.sg_ispeed
+#else /* USE_TERMIO */
+# ifdef SYSV_TERMIO
+# define termios termio
+# endif
+# ifndef TCSANOW
+# ifdef TCSETS
+# define TCSANOW TCSETS
+# define TCSADRAIN TCSETSW
+# define tcgetattr(f, t) ioctl(f, TCGETS, (char *)t)
+# else
+# ifdef TCSETA
+# define TCSANOW TCSETA
+# define TCSADRAIN TCSETAW
+# define tcgetattr(f, t) ioctl(f, TCGETA, (char *)t)
+# else
+# define TCSANOW TIOCSETA
+# define TCSADRAIN TIOCSETAW
+# define tcgetattr(f, t) ioctl(f, TIOCGETA, (char *)t)
+# endif
+# endif
+# define tcsetattr(f, a, t) ioctl(f, a, t)
+# define cfsetospeed(tp, val) (tp)->c_cflag &= ~CBAUD; \
+ (tp)->c_cflag |= (val)
+# define cfgetospeed(tp) ((tp)->c_cflag & CBAUD)
+# ifdef CIBAUD
+# define cfsetispeed(tp, val) (tp)->c_cflag &= ~CIBAUD; \
+ (tp)->c_cflag |= ((val)<<IBSHIFT)
+# define cfgetispeed(tp) (((tp)->c_cflag & CIBAUD)>>IBSHIFT)
+# else
+# define cfsetispeed(tp, val) (tp)->c_cflag &= ~CBAUD; \
+ (tp)->c_cflag |= (val)
+# define cfgetispeed(tp) ((tp)->c_cflag & CBAUD)
+# endif
+# endif /* TCSANOW */
+struct termios termbuf, termbuf2; /* pty control structure */
+# ifdef STREAMSPTY
+int ttyfd = -1;
+# endif
+#endif /* USE_TERMIO */
+
+/*
+ * init_termbuf()
+ * copy_termbuf(cp)
+ * set_termbuf()
+ *
+ * These three routines are used to get and set the "termbuf" structure
+ * to and from the kernel. init_termbuf() gets the current settings.
+ * copy_termbuf() hands in a new "termbuf" to write to the kernel, and
+ * set_termbuf() writes the structure into the kernel.
+ */
+
+ void
+init_termbuf()
+{
+#ifndef USE_TERMIO
+ (void) ioctl(pty, TIOCGETP, (char *)&termbuf.sg);
+ (void) ioctl(pty, TIOCGETC, (char *)&termbuf.tc);
+ (void) ioctl(pty, TIOCGLTC, (char *)&termbuf.ltc);
+# ifdef TIOCGSTATE
+ (void) ioctl(pty, TIOCGSTATE, (char *)&termbuf.state);
+# endif
+#else
+# ifdef STREAMSPTY
+ (void) tcgetattr(ttyfd, &termbuf);
+# else
+ (void) tcgetattr(pty, &termbuf);
+# endif
+#endif
+ termbuf2 = termbuf;
+}
+
+#if defined(LINEMODE) && defined(TIOCPKT_IOCTL)
+ void
+copy_termbuf(cp, len)
+ char *cp;
+ int len;
+{
+ if (len > sizeof(termbuf))
+ len = sizeof(termbuf);
+ memmove((char *)&termbuf, cp, len);
+ termbuf2 = termbuf;
+}
+#endif /* defined(LINEMODE) && defined(TIOCPKT_IOCTL) */
+
+ void
+set_termbuf()
+{
+ /*
+ * Only make the necessary changes.
+ */
+#ifndef USE_TERMIO
+ if (memcmp((char *)&termbuf.sg, (char *)&termbuf2.sg,
+ sizeof(termbuf.sg)))
+ (void) ioctl(pty, TIOCSETN, (char *)&termbuf.sg);
+ if (memcmp((char *)&termbuf.tc, (char *)&termbuf2.tc,
+ sizeof(termbuf.tc)))
+ (void) ioctl(pty, TIOCSETC, (char *)&termbuf.tc);
+ if (memcmp((char *)&termbuf.ltc, (char *)&termbuf2.ltc,
+ sizeof(termbuf.ltc)))
+ (void) ioctl(pty, TIOCSLTC, (char *)&termbuf.ltc);
+ if (termbuf.lflags != termbuf2.lflags)
+ (void) ioctl(pty, TIOCLSET, (char *)&termbuf.lflags);
+#else /* USE_TERMIO */
+ if (memcmp((char *)&termbuf, (char *)&termbuf2, sizeof(termbuf)))
+# ifdef STREAMSPTY
+ (void) tcsetattr(ttyfd, TCSANOW, &termbuf);
+# else
+ (void) tcsetattr(pty, TCSANOW, &termbuf);
+# endif
+# if defined(CRAY2) && defined(UNICOS5)
+ needtermstat = 1;
+# endif
+#endif /* USE_TERMIO */
+}
+
+
+/*
+ * spcset(func, valp, valpp)
+ *
+ * This function takes various special characters (func), and
+ * sets *valp to the current value of that character, and
+ * *valpp to point to where in the "termbuf" structure that
+ * value is kept.
+ *
+ * It returns the SLC_ level of support for this function.
+ */
+
+#ifndef USE_TERMIO
+ int
+spcset(func, valp, valpp)
+ int func;
+ cc_t *valp;
+ cc_t **valpp;
+{
+ switch(func) {
+ case SLC_EOF:
+ *valp = termbuf.tc.t_eofc;
+ *valpp = (cc_t *)&termbuf.tc.t_eofc;
+ return(SLC_VARIABLE);
+ case SLC_EC:
+ *valp = termbuf.sg.sg_erase;
+ *valpp = (cc_t *)&termbuf.sg.sg_erase;
+ return(SLC_VARIABLE);
+ case SLC_EL:
+ *valp = termbuf.sg.sg_kill;
+ *valpp = (cc_t *)&termbuf.sg.sg_kill;
+ return(SLC_VARIABLE);
+ case SLC_IP:
+ *valp = termbuf.tc.t_intrc;
+ *valpp = (cc_t *)&termbuf.tc.t_intrc;
+ return(SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT);
+ case SLC_ABORT:
+ *valp = termbuf.tc.t_quitc;
+ *valpp = (cc_t *)&termbuf.tc.t_quitc;
+ return(SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT);
+ case SLC_XON:
+ *valp = termbuf.tc.t_startc;
+ *valpp = (cc_t *)&termbuf.tc.t_startc;
+ return(SLC_VARIABLE);
+ case SLC_XOFF:
+ *valp = termbuf.tc.t_stopc;
+ *valpp = (cc_t *)&termbuf.tc.t_stopc;
+ return(SLC_VARIABLE);
+ case SLC_AO:
+ *valp = termbuf.ltc.t_flushc;
+ *valpp = (cc_t *)&termbuf.ltc.t_flushc;
+ return(SLC_VARIABLE);
+ case SLC_SUSP:
+ *valp = termbuf.ltc.t_suspc;
+ *valpp = (cc_t *)&termbuf.ltc.t_suspc;
+ return(SLC_VARIABLE);
+ case SLC_EW:
+ *valp = termbuf.ltc.t_werasc;
+ *valpp = (cc_t *)&termbuf.ltc.t_werasc;
+ return(SLC_VARIABLE);
+ case SLC_RP:
+ *valp = termbuf.ltc.t_rprntc;
+ *valpp = (cc_t *)&termbuf.ltc.t_rprntc;
+ return(SLC_VARIABLE);
+ case SLC_LNEXT:
+ *valp = termbuf.ltc.t_lnextc;
+ *valpp = (cc_t *)&termbuf.ltc.t_lnextc;
+ return(SLC_VARIABLE);
+ case SLC_FORW1:
+ *valp = termbuf.tc.t_brkc;
+ *valpp = (cc_t *)&termbuf.ltc.t_lnextc;
+ return(SLC_VARIABLE);
+ case SLC_BRK:
+ case SLC_SYNCH:
+ case SLC_AYT:
+ case SLC_EOR:
+ *valp = (cc_t)0;
+ *valpp = (cc_t *)0;
+ return(SLC_DEFAULT);
+ default:
+ *valp = (cc_t)0;
+ *valpp = (cc_t *)0;
+ return(SLC_NOSUPPORT);
+ }
+}
+
+#else /* USE_TERMIO */
+
+ int
+spcset(func, valp, valpp)
+ int func;
+ cc_t *valp;
+ cc_t **valpp;
+{
+
+#define setval(a, b) *valp = termbuf.c_cc[a]; \
+ *valpp = &termbuf.c_cc[a]; \
+ return(b);
+#define defval(a) *valp = ((cc_t)a); *valpp = (cc_t *)0; return(SLC_DEFAULT);
+
+ switch(func) {
+ case SLC_EOF:
+ setval(VEOF, SLC_VARIABLE);
+ case SLC_EC:
+ setval(VERASE, SLC_VARIABLE);
+ case SLC_EL:
+ setval(VKILL, SLC_VARIABLE);
+ case SLC_IP:
+ setval(VINTR, SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT);
+ case SLC_ABORT:
+ setval(VQUIT, SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT);
+ case SLC_XON:
+#ifdef VSTART
+ setval(VSTART, SLC_VARIABLE);
+#else
+ defval(0x13);
+#endif
+ case SLC_XOFF:
+#ifdef VSTOP
+ setval(VSTOP, SLC_VARIABLE);
+#else
+ defval(0x11);
+#endif
+ case SLC_EW:
+#ifdef VWERASE
+ setval(VWERASE, SLC_VARIABLE);
+#else
+ defval(0);
+#endif
+ case SLC_RP:
+#ifdef VREPRINT
+ setval(VREPRINT, SLC_VARIABLE);
+#else
+ defval(0);
+#endif
+ case SLC_LNEXT:
+#ifdef VLNEXT
+ setval(VLNEXT, SLC_VARIABLE);
+#else
+ defval(0);
+#endif
+ case SLC_AO:
+#if !defined(VDISCARD) && defined(VFLUSHO)
+# define VDISCARD VFLUSHO
+#endif
+#ifdef VDISCARD
+ setval(VDISCARD, SLC_VARIABLE|SLC_FLUSHOUT);
+#else
+ defval(0);
+#endif
+ case SLC_SUSP:
+#ifdef VSUSP
+ setval(VSUSP, SLC_VARIABLE|SLC_FLUSHIN);
+#else
+ defval(0);
+#endif
+#ifdef VEOL
+ case SLC_FORW1:
+ setval(VEOL, SLC_VARIABLE);
+#endif
+#ifdef VEOL2
+ case SLC_FORW2:
+ setval(VEOL2, SLC_VARIABLE);
+#endif
+ case SLC_AYT:
+#ifdef VSTATUS
+ setval(VSTATUS, SLC_VARIABLE);
+#else
+ defval(0);
+#endif
+
+ case SLC_BRK:
+ case SLC_SYNCH:
+ case SLC_EOR:
+ defval(0);
+
+ default:
+ *valp = 0;
+ *valpp = 0;
+ return(SLC_NOSUPPORT);
+ }
+}
+#endif /* USE_TERMIO */
+
+#ifdef CRAY
+/*
+ * getnpty()
+ *
+ * Return the number of pty's configured into the system.
+ */
+ int
+getnpty()
+{
+#ifdef _SC_CRAY_NPTY
+ int numptys;
+
+ if ((numptys = sysconf(_SC_CRAY_NPTY)) != -1)
+ return numptys;
+ else
+#endif /* _SC_CRAY_NPTY */
+ return 128;
+}
+#endif /* CRAY */
+
+#ifndef convex
+/*
+ * getpty()
+ *
+ * Allocate a pty. As a side effect, the external character
+ * array "line" contains the name of the slave side.
+ *
+ * Returns the file descriptor of the opened pty.
+ */
+#ifndef __GNUC__
+char *line = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
+#else
+static char Xline[] = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
+char *line = Xline;
+#endif
+#ifdef CRAY
+char *myline = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
+#endif /* CRAY */
+
+ int
+getpty(ptynum)
+int *ptynum;
+{
+ register int p;
+#ifdef STREAMSPTY
+ int t;
+ char *ptsname();
+
+ p = open("/dev/ptmx", 2);
+ if (p > 0) {
+ grantpt(p);
+ unlockpt(p);
+ strcpy(line, ptsname(p));
+ return(p);
+ }
+
+#else /* ! STREAMSPTY */
+#ifndef CRAY
+ register char *cp, *p1, *p2;
+ register int i;
+#if defined(sun) && defined(TIOCGPGRP) && BSD < 199207
+ int dummy;
+#endif
+
+#ifndef __hpux
+ (void) sprintf(line, "/dev/ptyXX");
+ p1 = &line[8];
+ p2 = &line[9];
+#else
+ (void) sprintf(line, "/dev/ptym/ptyXX");
+ p1 = &line[13];
+ p2 = &line[14];
+#endif
+
+ for (cp = "pqrstuvwxyzPQRST"; *cp; cp++) {
+ struct stat stb;
+
+ *p1 = *cp;
+ *p2 = '0';
+ /*
+ * This stat() check is just to keep us from
+ * looping through all 256 combinations if there
+ * aren't that many ptys available.
+ */
+ if (stat(line, &stb) < 0)
+ break;
+ for (i = 0; i < 16; i++) {
+ *p2 = "0123456789abcdef"[i];
+ p = open(line, 2);
+ if (p > 0) {
+#ifndef __hpux
+ line[5] = 't';
+#else
+ for (p1 = &line[8]; *p1; p1++)
+ *p1 = *(p1+1);
+ line[9] = 't';
+#endif
+ chown(line, 0, 0);
+ chmod(line, 0600);
+#if defined(sun) && defined(TIOCGPGRP) && BSD < 199207
+ if (ioctl(p, TIOCGPGRP, &dummy) == 0
+ || errno != EIO) {
+ chmod(line, 0666);
+ close(p);
+ line[5] = 'p';
+ } else
+#endif /* defined(sun) && defined(TIOCGPGRP) && BSD < 199207 */
+ return(p);
+ }
+ }
+ }
+#else /* CRAY */
+ extern lowpty, highpty;
+ struct stat sb;
+
+ for (*ptynum = lowpty; *ptynum <= highpty; (*ptynum)++) {
+ (void) sprintf(myline, "/dev/pty/%03d", *ptynum);
+ p = open(myline, 2);
+ if (p < 0)
+ continue;
+ (void) sprintf(line, "/dev/ttyp%03d", *ptynum);
+ /*
+ * Here are some shenanigans to make sure that there
+ * are no listeners lurking on the line.
+ */
+ if(stat(line, &sb) < 0) {
+ (void) close(p);
+ continue;
+ }
+ if(sb.st_uid || sb.st_gid || sb.st_mode != 0600) {
+ chown(line, 0, 0);
+ chmod(line, 0600);
+ (void)close(p);
+ p = open(myline, 2);
+ if (p < 0)
+ continue;
+ }
+ /*
+ * Now it should be safe...check for accessability.
+ */
+ if (access(line, 6) == 0)
+ return(p);
+ else {
+ /* no tty side to pty so skip it */
+ (void) close(p);
+ }
+ }
+#endif /* CRAY */
+#endif /* STREAMSPTY */
+ return(-1);
+}
+#endif /* convex */
+
+#ifdef LINEMODE
+/*
+ * tty_flowmode() Find out if flow control is enabled or disabled.
+ * tty_linemode() Find out if linemode (external processing) is enabled.
+ * tty_setlinemod(on) Turn on/off linemode.
+ * tty_isecho() Find out if echoing is turned on.
+ * tty_setecho(on) Enable/disable character echoing.
+ * tty_israw() Find out if terminal is in RAW mode.
+ * tty_binaryin(on) Turn on/off BINARY on input.
+ * tty_binaryout(on) Turn on/off BINARY on output.
+ * tty_isediting() Find out if line editing is enabled.
+ * tty_istrapsig() Find out if signal trapping is enabled.
+ * tty_setedit(on) Turn on/off line editing.
+ * tty_setsig(on) Turn on/off signal trapping.
+ * tty_issofttab() Find out if tab expansion is enabled.
+ * tty_setsofttab(on) Turn on/off soft tab expansion.
+ * tty_islitecho() Find out if typed control chars are echoed literally
+ * tty_setlitecho() Turn on/off literal echo of control chars
+ * tty_tspeed(val) Set transmit speed to val.
+ * tty_rspeed(val) Set receive speed to val.
+ */
+
+#ifdef convex
+static int linestate;
+#endif
+
+ int
+tty_linemode()
+{
+#ifndef convex
+#ifndef USE_TERMIO
+ return(termbuf.state & TS_EXTPROC);
+#else
+ return(termbuf.c_lflag & EXTPROC);
+#endif
+#else
+ return(linestate);
+#endif
+}
+
+ void
+tty_setlinemode(on)
+ int on;
+{
+#ifdef TIOCEXT
+# ifndef convex
+ set_termbuf();
+# else
+ linestate = on;
+# endif
+ (void) ioctl(pty, TIOCEXT, (char *)&on);
+# ifndef convex
+ init_termbuf();
+# endif
+#else /* !TIOCEXT */
+# ifdef EXTPROC
+ if (on)
+ termbuf.c_lflag |= EXTPROC;
+ else
+ termbuf.c_lflag &= ~EXTPROC;
+# endif
+#endif /* TIOCEXT */
+}
+#endif /* LINEMODE */
+
+ int
+tty_isecho()
+{
+#ifndef USE_TERMIO
+ return (termbuf.sg.sg_flags & ECHO);
+#else
+ return (termbuf.c_lflag & ECHO);
+#endif
+}
+
+ int
+tty_flowmode()
+{
+#ifndef USE_TERMIO
+ return(((termbuf.tc.t_startc) > 0 && (termbuf.tc.t_stopc) > 0) ? 1 : 0);
+#else
+ return((termbuf.c_iflag & IXON) ? 1 : 0);
+#endif
+}
+
+ int
+tty_restartany()
+{
+#ifndef USE_TERMIO
+# ifdef DECCTQ
+ return((termbuf.lflags & DECCTQ) ? 0 : 1);
+# else
+ return(-1);
+# endif
+#else
+ return((termbuf.c_iflag & IXANY) ? 1 : 0);
+#endif
+}
+
+ void
+tty_setecho(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ termbuf.sg.sg_flags |= ECHO|CRMOD;
+ else
+ termbuf.sg.sg_flags &= ~(ECHO|CRMOD);
+#else
+ if (on)
+ termbuf.c_lflag |= ECHO;
+ else
+ termbuf.c_lflag &= ~ECHO;
+#endif
+}
+
+ int
+tty_israw()
+{
+#ifndef USE_TERMIO
+ return(termbuf.sg.sg_flags & RAW);
+#else
+ return(!(termbuf.c_lflag & ICANON));
+#endif
+}
+
+#if defined (AUTHENTICATION) && defined(NO_LOGIN_F) && defined(LOGIN_R)
+ int
+tty_setraw(on)
+{
+# ifndef USE_TERMIO
+ if (on)
+ termbuf.sg.sg_flags |= RAW;
+ else
+ termbuf.sg.sg_flags &= ~RAW;
+# else
+ if (on)
+ termbuf.c_lflag &= ~ICANON;
+ else
+ termbuf.c_lflag |= ICANON;
+# endif
+}
+#endif
+
+ void
+tty_binaryin(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ termbuf.lflags |= LPASS8;
+ else
+ termbuf.lflags &= ~LPASS8;
+#else
+ if (on) {
+ termbuf.c_iflag &= ~ISTRIP;
+ } else {
+ termbuf.c_iflag |= ISTRIP;
+ }
+#endif
+}
+
+ void
+tty_binaryout(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ termbuf.lflags |= LLITOUT;
+ else
+ termbuf.lflags &= ~LLITOUT;
+#else
+ if (on) {
+ termbuf.c_cflag &= ~(CSIZE|PARENB);
+ termbuf.c_cflag |= CS8;
+ termbuf.c_oflag &= ~OPOST;
+ } else {
+ termbuf.c_cflag &= ~CSIZE;
+ termbuf.c_cflag |= CS7|PARENB;
+ termbuf.c_oflag |= OPOST;
+ }
+#endif
+}
+
+ int
+tty_isbinaryin()
+{
+#ifndef USE_TERMIO
+ return(termbuf.lflags & LPASS8);
+#else
+ return(!(termbuf.c_iflag & ISTRIP));
+#endif
+}
+
+ int
+tty_isbinaryout()
+{
+#ifndef USE_TERMIO
+ return(termbuf.lflags & LLITOUT);
+#else
+ return(!(termbuf.c_oflag&OPOST));
+#endif
+}
+
+#ifdef LINEMODE
+ int
+tty_isediting()
+{
+#ifndef USE_TERMIO
+ return(!(termbuf.sg.sg_flags & (CBREAK|RAW)));
+#else
+ return(termbuf.c_lflag & ICANON);
+#endif
+}
+
+ int
+tty_istrapsig()
+{
+#ifndef USE_TERMIO
+ return(!(termbuf.sg.sg_flags&RAW));
+#else
+ return(termbuf.c_lflag & ISIG);
+#endif
+}
+
+ void
+tty_setedit(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ termbuf.sg.sg_flags &= ~CBREAK;
+ else
+ termbuf.sg.sg_flags |= CBREAK;
+#else
+ if (on)
+ termbuf.c_lflag |= ICANON;
+ else
+ termbuf.c_lflag &= ~ICANON;
+#endif
+}
+
+ void
+tty_setsig(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ ;
+#else
+ if (on)
+ termbuf.c_lflag |= ISIG;
+ else
+ termbuf.c_lflag &= ~ISIG;
+#endif
+}
+#endif /* LINEMODE */
+
+ int
+tty_issofttab()
+{
+#ifndef USE_TERMIO
+ return (termbuf.sg.sg_flags & XTABS);
+#else
+# ifdef OXTABS
+ return (termbuf.c_oflag & OXTABS);
+# endif
+# ifdef TABDLY
+ return ((termbuf.c_oflag & TABDLY) == TAB3);
+# endif
+#endif
+}
+
+ void
+tty_setsofttab(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ termbuf.sg.sg_flags |= XTABS;
+ else
+ termbuf.sg.sg_flags &= ~XTABS;
+#else
+ if (on) {
+# ifdef OXTABS
+ termbuf.c_oflag |= OXTABS;
+# endif
+# ifdef TABDLY
+ termbuf.c_oflag &= ~TABDLY;
+ termbuf.c_oflag |= TAB3;
+# endif
+ } else {
+# ifdef OXTABS
+ termbuf.c_oflag &= ~OXTABS;
+# endif
+# ifdef TABDLY
+ termbuf.c_oflag &= ~TABDLY;
+ termbuf.c_oflag |= TAB0;
+# endif
+ }
+#endif
+}
+
+ int
+tty_islitecho()
+{
+#ifndef USE_TERMIO
+ return (!(termbuf.lflags & LCTLECH));
+#else
+# ifdef ECHOCTL
+ return (!(termbuf.c_lflag & ECHOCTL));
+# endif
+# ifdef TCTLECH
+ return (!(termbuf.c_lflag & TCTLECH));
+# endif
+# if !defined(ECHOCTL) && !defined(TCTLECH)
+ return (0); /* assumes ctl chars are echoed '^x' */
+# endif
+#endif
+}
+
+ void
+tty_setlitecho(on)
+ int on;
+{
+#ifndef USE_TERMIO
+ if (on)
+ termbuf.lflags &= ~LCTLECH;
+ else
+ termbuf.lflags |= LCTLECH;
+#else
+# ifdef ECHOCTL
+ if (on)
+ termbuf.c_lflag &= ~ECHOCTL;
+ else
+ termbuf.c_lflag |= ECHOCTL;
+# endif
+# ifdef TCTLECH
+ if (on)
+ termbuf.c_lflag &= ~TCTLECH;
+ else
+ termbuf.c_lflag |= TCTLECH;
+# endif
+#endif
+}
+
+ int
+tty_iscrnl()
+{
+#ifndef USE_TERMIO
+ return (termbuf.sg.sg_flags & CRMOD);
+#else
+ return (termbuf.c_iflag & ICRNL);
+#endif
+}
+
+/*
+ * Try to guess whether speeds are "encoded" (4.2BSD) or just numeric (4.4BSD).
+ */
+#if B4800 != 4800
+#define DECODE_BAUD
+#endif
+
+#ifdef DECODE_BAUD
+
+/*
+ * A table of available terminal speeds
+ */
+struct termspeeds {
+ int speed;
+ int value;
+} termspeeds[] = {
+ { 0, B0 }, { 50, B50 }, { 75, B75 },
+ { 110, B110 }, { 134, B134 }, { 150, B150 },
+ { 200, B200 }, { 300, B300 }, { 600, B600 },
+ { 1200, B1200 }, { 1800, B1800 }, { 2400, B2400 },
+ { 4800, B4800 },
+#ifdef B7200
+ { 7200, B7200 },
+#endif
+ { 9600, B9600 },
+#ifdef B14400
+ { 14400, B14400 },
+#endif
+#ifdef B19200
+ { 19200, B19200 },
+#endif
+#ifdef B28800
+ { 28800, B28800 },
+#endif
+#ifdef B38400
+ { 38400, B38400 },
+#endif
+#ifdef B57600
+ { 57600, B57600 },
+#endif
+#ifdef B115200
+ { 115200, B115200 },
+#endif
+#ifdef B230400
+ { 230400, B230400 },
+#endif
+ { -1, 0 }
+};
+#endif /* DECODE_BUAD */
+
+ void
+tty_tspeed(val)
+ int val;
+{
+#ifdef DECODE_BAUD
+ register struct termspeeds *tp;
+
+ for (tp = termspeeds; (tp->speed != -1) && (val > tp->speed); tp++)
+ ;
+ if (tp->speed == -1) /* back up to last valid value */
+ --tp;
+ cfsetospeed(&termbuf, tp->value);
+#else /* DECODE_BUAD */
+ cfsetospeed(&termbuf, val);
+#endif /* DECODE_BUAD */
+}
+
+ void
+tty_rspeed(val)
+ int val;
+{
+#ifdef DECODE_BAUD
+ register struct termspeeds *tp;
+
+ for (tp = termspeeds; (tp->speed != -1) && (val > tp->speed); tp++)
+ ;
+ if (tp->speed == -1) /* back up to last valid value */
+ --tp;
+ cfsetispeed(&termbuf, tp->value);
+#else /* DECODE_BAUD */
+ cfsetispeed(&termbuf, val);
+#endif /* DECODE_BAUD */
+}
+
+#if defined(CRAY2) && defined(UNICOS5)
+ int
+tty_isnewmap()
+{
+ return((termbuf.c_oflag & OPOST) && (termbuf.c_oflag & ONLCR) &&
+ !(termbuf.c_oflag & ONLRET));
+}
+#endif
+
+#ifdef PARENT_DOES_UTMP
+# ifndef NEWINIT
+extern struct utmp wtmp;
+extern char wtmpf[];
+# else /* NEWINIT */
+int gotalarm;
+
+ /* ARGSUSED */
+ void
+nologinproc(sig)
+ int sig;
+{
+ gotalarm++;
+}
+# endif /* NEWINIT */
+#endif /* PARENT_DOES_UTMP */
+
+#ifndef NEWINIT
+# ifdef PARENT_DOES_UTMP
+extern void utmp_sig_init P((void));
+extern void utmp_sig_reset P((void));
+extern void utmp_sig_wait P((void));
+extern void utmp_sig_notify P((int));
+# endif /* PARENT_DOES_UTMP */
+#endif
+
+/*
+ * getptyslave()
+ *
+ * Open the slave side of the pty, and do any initialization
+ * that is necessary. The return value is a file descriptor
+ * for the slave side.
+ */
+ int
+getptyslave()
+{
+ register int t = -1;
+
+#if !defined(CRAY) || !defined(NEWINIT)
+# ifdef LINEMODE
+ int waslm;
+# endif
+# ifdef TIOCGWINSZ
+ struct winsize ws;
+ extern int def_row, def_col;
+# endif
+ extern int def_tspeed, def_rspeed;
+ /*
+ * Opening the slave side may cause initilization of the
+ * kernel tty structure. We need remember the state of
+ * if linemode was turned on
+ * terminal window size
+ * terminal speed
+ * so that we can re-set them if we need to.
+ */
+# ifdef LINEMODE
+ waslm = tty_linemode();
+# endif
+
+
+ /*
+ * Make sure that we don't have a controlling tty, and
+ * that we are the session (process group) leader.
+ */
+# ifdef TIOCNOTTY
+ t = open(_PATH_TTY, O_RDWR);
+ if (t >= 0) {
+ (void) ioctl(t, TIOCNOTTY, (char *)0);
+ (void) close(t);
+ }
+# endif
+
+
+# ifdef PARENT_DOES_UTMP
+ /*
+ * Wait for our parent to get the utmp stuff to get done.
+ */
+ utmp_sig_wait();
+# endif
+
+ t = cleanopen(line);
+ if (t < 0)
+ fatalperror(net, line);
+
+#ifdef STREAMSPTY
+#ifdef USE_TERMIO
+ ttyfd = t;
+#endif
+ if (ioctl(t, I_PUSH, "ptem") < 0)
+ fatal(net, "I_PUSH ptem");
+ if (ioctl(t, I_PUSH, "ldterm") < 0)
+ fatal(net, "I_PUSH ldterm");
+ if (ioctl(t, I_PUSH, "ttcompat") < 0)
+ fatal(net, "I_PUSH ttcompat");
+ if (ioctl(pty, I_PUSH, "pckt") < 0)
+ fatal(net, "I_PUSH pckt");
+#endif
+
+ /*
+ * set up the tty modes as we like them to be.
+ */
+ init_termbuf();
+# ifdef TIOCGWINSZ
+ if (def_row || def_col) {
+ memset((char *)&ws, 0, sizeof(ws));
+ ws.ws_col = def_col;
+ ws.ws_row = def_row;
+ (void)ioctl(t, TIOCSWINSZ, (char *)&ws);
+ }
+# endif
+
+ /*
+ * Settings for sgtty based systems
+ */
+# ifndef USE_TERMIO
+ termbuf.sg.sg_flags |= CRMOD|ANYP|ECHO|XTABS;
+# endif /* USE_TERMIO */
+
+ /*
+ * Settings for UNICOS (and HPUX)
+ */
+# if defined(CRAY) || defined(__hpux)
+ termbuf.c_oflag = OPOST|ONLCR|TAB3;
+ termbuf.c_iflag = IGNPAR|ISTRIP|ICRNL|IXON;
+ termbuf.c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK;
+ termbuf.c_cflag = EXTB|HUPCL|CS8;
+# endif
+
+ /*
+ * Settings for all other termios/termio based
+ * systems, other than 4.4BSD. In 4.4BSD the
+ * kernel does the initial terminal setup.
+ */
+# if defined(USE_TERMIO) && !(defined(CRAY) || defined(__hpux)) && (BSD <= 43)
+# ifndef OXTABS
+# define OXTABS 0
+# endif
+ termbuf.c_lflag |= ECHO;
+ termbuf.c_oflag |= ONLCR|OXTABS;
+ termbuf.c_iflag |= ICRNL;
+ termbuf.c_iflag &= ~IXOFF;
+# endif /* defined(USE_TERMIO) && !defined(CRAY) && (BSD <= 43) */
+ tty_rspeed((def_rspeed > 0) ? def_rspeed : 9600);
+ tty_tspeed((def_tspeed > 0) ? def_tspeed : 9600);
+# ifdef LINEMODE
+ if (waslm)
+ tty_setlinemode(1);
+# endif /* LINEMODE */
+
+ /*
+ * Set the tty modes, and make this our controlling tty.
+ */
+ set_termbuf();
+ if (login_tty(t) == -1)
+ fatalperror(net, "login_tty");
+#endif /* !defined(CRAY) || !defined(NEWINIT) */
+ if (net > 2)
+ (void) close(net);
+#if defined(AUTHENTICATION) && defined(NO_LOGIN_F) && defined(LOGIN_R)
+ /*
+ * Leave the pty open so that we can write out the rlogin
+ * protocol for /bin/login, if the authentication works.
+ */
+#else
+ if (pty > 2) {
+ (void) close(pty);
+ pty = -1;
+ }
+#endif
+}
+
+#if !defined(CRAY) || !defined(NEWINIT)
+#ifndef O_NOCTTY
+#define O_NOCTTY 0
+#endif
+/*
+ * Open the specified slave side of the pty,
+ * making sure that we have a clean tty.
+ */
+ int
+cleanopen(line)
+ char *line;
+{
+ register int t;
+#ifdef UNICOS7x
+ struct secstat secbuf;
+#endif /* UNICOS7x */
+
+#ifndef STREAMSPTY
+ /*
+ * Make sure that other people can't open the
+ * slave side of the connection.
+ */
+ (void) chown(line, 0, 0);
+ (void) chmod(line, 0600);
+#endif
+
+# if !defined(CRAY) && (BSD > 43)
+ (void) revoke(line);
+# endif
+#ifdef UNICOS7x
+ if (secflag) {
+ if (secstat(line, &secbuf) < 0)
+ return(-1);
+ if (setulvl(secbuf.st_slevel) < 0)
+ return(-1);
+ if (setucmp(secbuf.st_compart) < 0)
+ return(-1);
+ }
+#endif /* UNICOS7x */
+
+ t = open(line, O_RDWR|O_NOCTTY);
+
+#ifdef UNICOS7x
+ if (secflag) {
+ if (setulvl(sysv.sy_minlvl) < 0)
+ return(-1);
+ if (setucmp(0) < 0)
+ return(-1);
+ }
+#endif /* UNICOS7x */
+
+ if (t < 0)
+ return(-1);
+
+ /*
+ * Hangup anybody else using this ttyp, then reopen it for
+ * ourselves.
+ */
+# if !(defined(CRAY) || defined(__hpux)) && (BSD <= 43) && !defined(STREAMSPTY)
+ (void) signal(SIGHUP, SIG_IGN);
+ vhangup();
+ (void) signal(SIGHUP, SIG_DFL);
+ t = open(line, O_RDWR|O_NOCTTY);
+ if (t < 0)
+ return(-1);
+# endif
+# if defined(CRAY) && defined(TCVHUP)
+ {
+ register int i;
+ (void) signal(SIGHUP, SIG_IGN);
+ (void) ioctl(t, TCVHUP, (char *)0);
+ (void) signal(SIGHUP, SIG_DFL);
+
+#ifdef UNICOS7x
+ if (secflag) {
+ if (secstat(line, &secbuf) < 0)
+ return(-1);
+ if (setulvl(secbuf.st_slevel) < 0)
+ return(-1);
+ if (setucmp(secbuf.st_compart) < 0)
+ return(-1);
+ }
+#endif /* UNICOS7x */
+
+ i = open(line, O_RDWR);
+
+#ifdef UNICOS7x
+ if (secflag) {
+ if (setulvl(sysv.sy_minlvl) < 0)
+ return(-1);
+ if (setucmp(0) < 0)
+ return(-1);
+ }
+#endif /* UNICOS7x */
+
+ if (i < 0)
+ return(-1);
+ (void) close(t);
+ t = i;
+ }
+# endif /* defined(CRAY) && defined(TCVHUP) */
+ return(t);
+}
+#endif /* !defined(CRAY) || !defined(NEWINIT) */
+
+#if BSD <= 43
+
+ int
+login_tty(t)
+ int t;
+{
+ if (setsid() < 0) {
+#ifdef ultrix
+ /*
+ * The setsid() may have failed because we
+ * already have a pgrp == pid. Zero out
+ * our pgrp and try again...
+ */
+ if ((setpgrp(0, 0) < 0) || (setsid() < 0))
+#endif
+ fatalperror(net, "setsid()");
+ }
+# ifdef TIOCSCTTY
+ if (ioctl(t, TIOCSCTTY, (char *)0) < 0)
+ fatalperror(net, "ioctl(sctty)");
+# if defined(CRAY)
+ /*
+ * Close the hard fd to /dev/ttypXXX, and re-open through
+ * the indirect /dev/tty interface.
+ */
+ close(t);
+ if ((t = open("/dev/tty", O_RDWR)) < 0)
+ fatalperror(net, "open(/dev/tty)");
+# endif
+# else
+ /*
+ * We get our controlling tty assigned as a side-effect
+ * of opening up a tty device. But on BSD based systems,
+ * this only happens if our process group is zero. The
+ * setsid() call above may have set our pgrp, so clear
+ * it out before opening the tty...
+ */
+# ifndef SOLARIS
+ (void) setpgrp(0, 0);
+# else
+ (void) setpgrp();
+# endif
+ close(open(line, O_RDWR));
+# endif
+ if (t != 0)
+ (void) dup2(t, 0);
+ if (t != 1)
+ (void) dup2(t, 1);
+ if (t != 2)
+ (void) dup2(t, 2);
+ if (t > 2)
+ close(t);
+ return(0);
+}
+#endif /* BSD <= 43 */
+
+#ifdef NEWINIT
+char *gen_id = "fe";
+#endif
+
+/*
+ * startslave(host)
+ *
+ * Given a hostname, do whatever
+ * is necessary to startup the login process on the slave side of the pty.
+ */
+
+/* ARGSUSED */
+ void
+startslave(host, autologin, autoname)
+ char *host;
+ int autologin;
+ char *autoname;
+{
+ register int i;
+ long time();
+ char name[256];
+#ifdef NEWINIT
+ extern char *ptyip;
+ struct init_request request;
+ void nologinproc();
+ register int n;
+#endif /* NEWINIT */
+
+#if defined(AUTHENTICATION)
+ if (!autoname || !autoname[0])
+ autologin = 0;
+
+ if (autologin < auth_level) {
+ fatal(net, "Authorization failed");
+ exit(1);
+ }
+#endif
+
+#ifndef NEWINIT
+# ifdef PARENT_DOES_UTMP
+ utmp_sig_init();
+# endif /* PARENT_DOES_UTMP */
+
+ if ((i = fork()) < 0)
+ fatalperror(net, "fork");
+ if (i) {
+# ifdef PARENT_DOES_UTMP
+ /*
+ * Cray parent will create utmp entry for child and send
+ * signal to child to tell when done. Child waits for signal
+ * before doing anything important.
+ */
+ register int pid = i;
+ void sigjob P((int));
+
+ setpgrp();
+ utmp_sig_reset(); /* reset handler to default */
+ /*
+ * Create utmp entry for child
+ */
+ (void) time(&wtmp.ut_time);
+ wtmp.ut_type = LOGIN_PROCESS;
+ wtmp.ut_pid = pid;
+ SCPYN(wtmp.ut_user, "LOGIN");
+ SCPYN(wtmp.ut_host, host);
+ SCPYN(wtmp.ut_line, line + sizeof("/dev/") - 1);
+#ifndef __hpux
+ SCPYN(wtmp.ut_id, wtmp.ut_line+3);
+#else
+ SCPYN(wtmp.ut_id, wtmp.ut_line+7);
+#endif
+ pututline(&wtmp);
+ endutent();
+ if ((i = open(wtmpf, O_WRONLY|O_APPEND)) >= 0) {
+ (void) write(i, (char *)&wtmp, sizeof(struct utmp));
+ (void) close(i);
+ }
+#ifdef CRAY
+ (void) signal(WJSIGNAL, sigjob);
+#endif
+ utmp_sig_notify(pid);
+# endif /* PARENT_DOES_UTMP */
+ } else {
+ getptyslave(autologin);
+ start_login(host, autologin, autoname);
+ /*NOTREACHED*/
+ }
+#else /* NEWINIT */
+
+ /*
+ * Init will start up login process if we ask nicely. We only wait
+ * for it to start up and begin normal telnet operation.
+ */
+ if ((i = open(INIT_FIFO, O_WRONLY)) < 0) {
+ char tbuf[128];
+ (void) sprintf(tbuf, "Can't open %s\n", INIT_FIFO);
+ fatalperror(net, tbuf);
+ }
+ memset((char *)&request, 0, sizeof(request));
+ request.magic = INIT_MAGIC;
+ SCPYN(request.gen_id, gen_id);
+ SCPYN(request.tty_id, &line[8]);
+ SCPYN(request.host, host);
+ SCPYN(request.term_type, terminaltype ? terminaltype : "network");
+#if !defined(UNICOS5)
+ request.signal = SIGCLD;
+ request.pid = getpid();
+#endif
+#ifdef BFTPDAEMON
+ /*
+ * Are we working as the bftp daemon?
+ */
+ if (bftpd) {
+ SCPYN(request.exec_name, BFTPPATH);
+ }
+#endif /* BFTPDAEMON */
+ if (write(i, (char *)&request, sizeof(request)) < 0) {
+ char tbuf[128];
+ (void) sprintf(tbuf, "Can't write to %s\n", INIT_FIFO);
+ fatalperror(net, tbuf);
+ }
+ (void) close(i);
+ (void) signal(SIGALRM, nologinproc);
+ for (i = 0; ; i++) {
+ char tbuf[128];
+ alarm(15);
+ n = read(pty, ptyip, BUFSIZ);
+ if (i == 3 || n >= 0 || !gotalarm)
+ break;
+ gotalarm = 0;
+ sprintf(tbuf, "telnetd: waiting for /etc/init to start login process on %s\r\n", line);
+ (void) write(net, tbuf, strlen(tbuf));
+ }
+ if (n < 0 && gotalarm)
+ fatal(net, "/etc/init didn't start login process");
+ pcc += n;
+ alarm(0);
+ (void) signal(SIGALRM, SIG_DFL);
+
+ return;
+#endif /* NEWINIT */
+}
+
+char *envinit[3];
+extern char **environ;
+
+ void
+init_env()
+{
+ extern char *getenv();
+ char **envp;
+
+ envp = envinit;
+ if (*envp = getenv("TZ"))
+ *envp++ -= 3;
+#if defined(CRAY) || defined(__hpux)
+ else
+ *envp++ = "TZ=GMT0";
+#endif
+ *envp = 0;
+ environ = envinit;
+}
+
+#ifndef NEWINIT
+
+/*
+ * start_login(host)
+ *
+ * Assuming that we are now running as a child processes, this
+ * function will turn us into the login process.
+ */
+
+ void
+start_login(host, autologin, name)
+ char *host;
+ int autologin;
+ char *name;
+{
+ register char *cp;
+ register char **argv;
+ char **addarg();
+ extern char *getenv();
+#ifdef UTMPX
+ register int pid = getpid();
+ struct utmpx utmpx;
+#endif
+#ifdef SOLARIS
+ char *term;
+ char termbuf[64];
+#endif
+
+#ifdef UTMPX
+ /*
+ * Create utmp entry for child
+ */
+
+ memset(&utmpx, 0, sizeof(utmpx));
+ SCPYN(utmpx.ut_user, ".telnet");
+ SCPYN(utmpx.ut_line, line + sizeof("/dev/") - 1);
+ utmpx.ut_pid = pid;
+ utmpx.ut_id[0] = 't';
+ utmpx.ut_id[1] = 'n';
+ utmpx.ut_id[2] = SC_WILDC;
+ utmpx.ut_id[3] = SC_WILDC;
+ utmpx.ut_type = LOGIN_PROCESS;
+ (void) time(&utmpx.ut_tv.tv_sec);
+ if (makeutx(&utmpx) == NULL)
+ fatal(net, "makeutx failed");
+#endif
+
+ scrub_env();
+
+ /*
+ * -h : pass on name of host.
+ * WARNING: -h is accepted by login if and only if
+ * getuid() == 0.
+ * -p : don't clobber the environment (so terminal type stays set).
+ *
+ * -f : force this login, he has already been authenticated
+ */
+ argv = addarg(0, "login");
+
+#if !defined(NO_LOGIN_H)
+
+# if defined (AUTHENTICATION) && defined(NO_LOGIN_F) && defined(LOGIN_R)
+ /*
+ * Don't add the "-h host" option if we are going
+ * to be adding the "-r host" option down below...
+ */
+ if ((auth_level < 0) || (autologin != AUTH_VALID))
+# endif
+ {
+ argv = addarg(argv, "-h");
+ argv = addarg(argv, host);
+#ifdef SOLARIS
+ /*
+ * SVR4 version of -h takes TERM= as second arg, or -
+ */
+ term = getenv("TERM");
+ if (term == NULL || term[0] == 0) {
+ term = "-";
+ } else {
+ strcpy(termbuf, "TERM=");
+ strncat(termbuf, term, sizeof(termbuf) - 6);
+ term = termbuf;
+ }
+ argv = addarg(argv, term);
+#endif
+ }
+#endif
+#if !defined(NO_LOGIN_P)
+ argv = addarg(argv, "-p");
+#endif
+#ifdef LINEMODE
+ /*
+ * Set the environment variable "LINEMODE" to either
+ * "real" or "kludge" if we are operating in either
+ * real or kludge linemode.
+ */
+ if (lmodetype == REAL_LINEMODE)
+ setenv("LINEMODE", "real", 1);
+# ifdef KLUDGELINEMODE
+ else if (lmodetype == KLUDGE_LINEMODE || lmodetype == KLUDGE_OK)
+ setenv("LINEMODE", "kludge", 1);
+# endif
+#endif
+#ifdef BFTPDAEMON
+ /*
+ * Are we working as the bftp daemon? If so, then ask login
+ * to start bftp instead of shell.
+ */
+ if (bftpd) {
+ argv = addarg(argv, "-e");
+ argv = addarg(argv, BFTPPATH);
+ } else
+#endif
+#if defined (SecurID)
+ /*
+ * don't worry about the -f that might get sent.
+ * A -s is supposed to override it anyhow.
+ */
+ if (require_SecurID)
+ argv = addarg(argv, "-s");
+#endif
+#if defined (AUTHENTICATION)
+ if (auth_level >= 0 && autologin == AUTH_VALID) {
+# if !defined(NO_LOGIN_F)
+ argv = addarg(argv, "-f");
+ argv = addarg(argv, name);
+# else
+# if defined(LOGIN_R)
+ /*
+ * We don't have support for "login -f", but we
+ * can fool /bin/login into thinking that we are
+ * rlogind, and allow us to log in without a
+ * password. The rlogin protocol expects
+ * local-user\0remote-user\0term/speed\0
+ */
+
+ if (pty > 2) {
+ register char *cp;
+ char speed[128];
+ int isecho, israw, xpty, len;
+ extern int def_rspeed;
+# ifndef LOGIN_HOST
+ /*
+ * Tell login that we are coming from "localhost".
+ * If we passed in the real host name, then the
+ * user would have to allow .rhost access from
+ * every machine that they want authenticated
+ * access to work from, which sort of defeats
+ * the purpose of an authenticated login...
+ * So, we tell login that the session is coming
+ * from "localhost", and the user will only have
+ * to have "localhost" in their .rhost file.
+ */
+# define LOGIN_HOST "localhost"
+# endif
+ argv = addarg(argv, "-r");
+ argv = addarg(argv, LOGIN_HOST);
+
+ xpty = pty;
+# ifndef STREAMSPTY
+ pty = 0;
+# else
+ ttyfd = 0;
+# endif
+ init_termbuf();
+ isecho = tty_isecho();
+ israw = tty_israw();
+ if (isecho || !israw) {
+ tty_setecho(0); /* Turn off echo */
+ tty_setraw(1); /* Turn on raw */
+ set_termbuf();
+ }
+ len = strlen(name)+1;
+ write(xpty, name, len);
+ write(xpty, name, len);
+ sprintf(speed, "%s/%d", (cp = getenv("TERM")) ? cp : "",
+ (def_rspeed > 0) ? def_rspeed : 9600);
+ len = strlen(speed)+1;
+ write(xpty, speed, len);
+
+ if (isecho || !israw) {
+ init_termbuf();
+ tty_setecho(isecho);
+ tty_setraw(israw);
+ set_termbuf();
+ if (!israw) {
+ /*
+ * Write a newline to ensure
+ * that login will be able to
+ * read the line...
+ */
+ write(xpty, "\n", 1);
+ }
+ }
+ pty = xpty;
+ }
+# else
+ argv = addarg(argv, name);
+# endif
+# endif
+ } else
+#endif
+ if (getenv("USER")) {
+ argv = addarg(argv, getenv("USER"));
+#if defined(LOGIN_ARGS) && defined(NO_LOGIN_P)
+ {
+ register char **cpp;
+ for (cpp = environ; *cpp; cpp++)
+ argv = addarg(argv, *cpp);
+ }
+#endif
+ /*
+ * Assume that login will set the USER variable
+ * correctly. For SysV systems, this means that
+ * USER will no longer be set, just LOGNAME by
+ * login. (The problem is that if the auto-login
+ * fails, and the user then specifies a different
+ * account name, he can get logged in with both
+ * LOGNAME and USER in his environment, but the
+ * USER value will be wrong.
+ */
+ unsetenv("USER");
+ }
+#ifdef SOLARIS
+ else {
+ char **p;
+
+ argv = addarg(argv, ""); /* no login name */
+ for (p = environ; *p; p++) {
+ argv = addarg(argv, *p);
+ }
+ }
+#endif /* SOLARIS */
+#if defined(AUTHENTICATION) && defined(NO_LOGIN_F) && defined(LOGIN_R)
+ if (pty > 2)
+ close(pty);
+#endif
+ closelog();
+ /*
+ * This sleep(1) is in here so that telnetd can
+ * finish up with the tty. There's a race condition
+ * the login banner message gets lost...
+ */
+ sleep(1);
+ execv(_PATH_LOGIN, argv);
+
+ syslog(LOG_ERR, "%s: %m\n", _PATH_LOGIN);
+ fatalperror(net, _PATH_LOGIN);
+ /*NOTREACHED*/
+}
+
+ char **
+addarg(argv, val)
+ register char **argv;
+ register char *val;
+{
+ register char **cpp;
+
+ if (argv == NULL) {
+ /*
+ * 10 entries, a leading length, and a null
+ */
+ argv = (char **)malloc(sizeof(*argv) * 12);
+ if (argv == NULL)
+ return(NULL);
+ *argv++ = (char *)10;
+ *argv = (char *)0;
+ }
+ for (cpp = argv; *cpp; cpp++)
+ ;
+ if (cpp == &argv[(int)argv[-1]]) {
+ --argv;
+ *argv = (char *)((int)(*argv) + 10);
+ argv = (char **)realloc(argv, sizeof(*argv)*((int)(*argv) + 2));
+ if (argv == NULL)
+ return(NULL);
+ argv++;
+ cpp = &argv[(int)argv[-1] - 10];
+ }
+ *cpp++ = val;
+ *cpp = 0;
+ return(argv);
+}
+#endif /* NEWINIT */
+
+/*
+ * scrub_env()
+ *
+ * Remove a few things from the environment that
+ * don't need to be there.
+ */
+scrub_env()
+{
+ register char **cpp, **cpp2;
+
+ for (cpp2 = cpp = environ; *cpp; cpp++) {
+ if (strncmp(*cpp, "LD_", 3) &&
+ strncmp(*cpp, "_RLD_", 5) &&
+ strncmp(*cpp, "LIBPATH=", 8) &&
+ strncmp(*cpp, "IFS=", 4))
+ *cpp2++ = *cpp;
+ }
+ *cpp2 = 0;
+}
+
+/*
+ * cleanup()
+ *
+ * This is the routine to call when we are all through, to
+ * clean up anything that needs to be cleaned up.
+ */
+ /* ARGSUSED */
+ void
+cleanup(sig)
+ int sig;
+{
+#ifndef PARENT_DOES_UTMP
+# if (BSD > 43) || defined(convex)
+ char *p;
+
+ p = line + sizeof("/dev/") - 1;
+ if (logout(p))
+ logwtmp(p, "", "");
+ (void)chmod(line, 0666);
+ (void)chown(line, 0, 0);
+ *p = 'p';
+ (void)chmod(line, 0666);
+ (void)chown(line, 0, 0);
+ (void) shutdown(net, 2);
+ exit(1);
+# else
+ void rmut();
+
+ rmut();
+ vhangup(); /* XXX */
+ (void) shutdown(net, 2);
+ exit(1);
+# endif
+#else /* PARENT_DOES_UTMP */
+# ifdef NEWINIT
+ (void) shutdown(net, 2);
+ exit(1);
+# else /* NEWINIT */
+# ifdef CRAY
+ static int incleanup = 0;
+ register int t;
+ int child_status; /* status of child process as returned by waitpid */
+ int flags = WNOHANG|WUNTRACED;
+
+ /*
+ * 1: Pick up the zombie, if we are being called
+ * as the signal handler.
+ * 2: If we are a nested cleanup(), return.
+ * 3: Try to clean up TMPDIR.
+ * 4: Fill in utmp with shutdown of process.
+ * 5: Close down the network and pty connections.
+ * 6: Finish up the TMPDIR cleanup, if needed.
+ */
+ if (sig == SIGCHLD) {
+ while (waitpid(-1, &child_status, flags) > 0)
+ ; /* VOID */
+ /* Check if the child process was stopped
+ * rather than exited. We want cleanup only if
+ * the child has died.
+ */
+ if (WIFSTOPPED(child_status)) {
+ return;
+ }
+ }
+ t = sigblock(sigmask(SIGCHLD));
+ if (incleanup) {
+ sigsetmask(t);
+ return;
+ }
+ incleanup = 1;
+ sigsetmask(t);
+#ifdef UNICOS7x
+ if (secflag) {
+ /*
+ * We need to set ourselves back to a null
+ * label to clean up.
+ */
+
+ setulvl(sysv.sy_minlvl);
+ setucmp((long)0);
+ }
+#endif /* UNICOS7x */
+
+ t = cleantmp(&wtmp);
+ setutent(); /* just to make sure */
+# endif /* CRAY */
+ rmut(line);
+ close(pty);
+ (void) shutdown(net, 2);
+# ifdef CRAY
+ if (t == 0)
+ cleantmp(&wtmp);
+# endif /* CRAY */
+ exit(1);
+# endif /* NEWINT */
+#endif /* PARENT_DOES_UTMP */
+}
+
+#if defined(PARENT_DOES_UTMP) && !defined(NEWINIT)
+/*
+ * _utmp_sig_rcv
+ * utmp_sig_init
+ * utmp_sig_wait
+ * These three functions are used to coordinate the handling of
+ * the utmp file between the server and the soon-to-be-login shell.
+ * The server actually creates the utmp structure, the child calls
+ * utmp_sig_wait(), until the server calls utmp_sig_notify() and
+ * signals the future-login shell to proceed.
+ */
+static int caught=0; /* NZ when signal intercepted */
+static void (*func)(); /* address of previous handler */
+
+ void
+_utmp_sig_rcv(sig)
+ int sig;
+{
+ caught = 1;
+ (void) signal(SIGUSR1, func);
+}
+
+ void
+utmp_sig_init()
+{
+ /*
+ * register signal handler for UTMP creation
+ */
+ if ((int)(func = signal(SIGUSR1, _utmp_sig_rcv)) == -1)
+ fatalperror(net, "telnetd/signal");
+}
+
+ void
+utmp_sig_reset()
+{
+ (void) signal(SIGUSR1, func); /* reset handler to default */
+}
+
+# ifdef __hpux
+# define sigoff() /* do nothing */
+# define sigon() /* do nothing */
+# endif
+
+ void
+utmp_sig_wait()
+{
+ /*
+ * Wait for parent to write our utmp entry.
+ */
+ sigoff();
+ while (caught == 0) {
+ pause(); /* wait until we get a signal (sigon) */
+ sigoff(); /* turn off signals while we check caught */
+ }
+ sigon(); /* turn on signals again */
+}
+
+ void
+utmp_sig_notify(pid)
+{
+ kill(pid, SIGUSR1);
+}
+
+# ifdef CRAY
+static int gotsigjob = 0;
+
+ /*ARGSUSED*/
+ void
+sigjob(sig)
+ int sig;
+{
+ register int jid;
+ register struct jobtemp *jp;
+
+ while ((jid = waitjob(NULL)) != -1) {
+ if (jid == 0) {
+ return;
+ }
+ gotsigjob++;
+ jobend(jid, NULL, NULL);
+ }
+}
+
+/*
+ * jid_getutid:
+ * called by jobend() before calling cleantmp()
+ * to find the correct $TMPDIR to cleanup.
+ */
+
+ struct utmp *
+jid_getutid(jid)
+ int jid;
+{
+ struct utmp *cur = NULL;
+
+ setutent(); /* just to make sure */
+ while (cur = getutent()) {
+ if ( (cur->ut_type != NULL) && (jid == cur->ut_jid) ) {
+ return(cur);
+ }
+ }
+
+ return(0);
+}
+
+/*
+ * Clean up the TMPDIR that login created.
+ * The first time this is called we pick up the info
+ * from the utmp. If the job has already gone away,
+ * then we'll clean up and be done. If not, then
+ * when this is called the second time it will wait
+ * for the signal that the job is done.
+ */
+ int
+cleantmp(wtp)
+ register struct utmp *wtp;
+{
+ struct utmp *utp;
+ static int first = 1;
+ register int mask, omask, ret;
+ extern struct utmp *getutid P((const struct utmp *_Id));
+
+
+ mask = sigmask(WJSIGNAL);
+
+ if (first == 0) {
+ omask = sigblock(mask);
+ while (gotsigjob == 0)
+ sigpause(omask);
+ return(1);
+ }
+ first = 0;
+ setutent(); /* just to make sure */
+
+ utp = getutid(wtp);
+ if (utp == 0) {
+ syslog(LOG_ERR, "Can't get /etc/utmp entry to clean TMPDIR");
+ return(-1);
+ }
+ /*
+ * Nothing to clean up if the user shell was never started.
+ */
+ if (utp->ut_type != USER_PROCESS || utp->ut_jid == 0)
+ return(1);
+
+ /*
+ * Block the WJSIGNAL while we are in jobend().
+ */
+ omask = sigblock(mask);
+ ret = jobend(utp->ut_jid, utp->ut_tpath, utp->ut_user);
+ sigsetmask(omask);
+ return(ret);
+}
+
+ int
+jobend(jid, path, user)
+ register int jid;
+ register char *path;
+ register char *user;
+{
+ static int saved_jid = 0;
+ static int pty_saved_jid = 0;
+ static char saved_path[sizeof(wtmp.ut_tpath)+1];
+ static char saved_user[sizeof(wtmp.ut_user)+1];
+
+ /*
+ * this little piece of code comes into play
+ * only when ptyreconnect is used to reconnect
+ * to an previous session.
+ *
+ * this is the only time when the
+ * "saved_jid != jid" code is executed.
+ */
+
+ if ( saved_jid && saved_jid != jid ) {
+ if (!path) { /* called from signal handler */
+ pty_saved_jid = jid;
+ } else {
+ pty_saved_jid = saved_jid;
+ }
+ }
+
+ if (path) {
+ strncpy(saved_path, path, sizeof(wtmp.ut_tpath));
+ strncpy(saved_user, user, sizeof(wtmp.ut_user));
+ saved_path[sizeof(saved_path)] = '\0';
+ saved_user[sizeof(saved_user)] = '\0';
+ }
+ if (saved_jid == 0) {
+ saved_jid = jid;
+ return(0);
+ }
+
+ /* if the jid has changed, get the correct entry from the utmp file */
+
+ if ( saved_jid != jid ) {
+ struct utmp *utp = NULL;
+ struct utmp *jid_getutid();
+
+ utp = jid_getutid(pty_saved_jid);
+
+ if (utp == 0) {
+ syslog(LOG_ERR, "Can't get /etc/utmp entry to clean TMPDIR");
+ return(-1);
+ }
+
+ cleantmpdir(jid, utp->ut_tpath, utp->ut_user);
+ return(1);
+ }
+
+ cleantmpdir(jid, saved_path, saved_user);
+ return(1);
+}
+
+/*
+ * Fork a child process to clean up the TMPDIR
+ */
+cleantmpdir(jid, tpath, user)
+ register int jid;
+ register char *tpath;
+ register char *user;
+{
+ switch(fork()) {
+ case -1:
+ syslog(LOG_ERR, "TMPDIR cleanup(%s): fork() failed: %m\n",
+ tpath);
+ break;
+ case 0:
+ execl(CLEANTMPCMD, CLEANTMPCMD, user, tpath, 0);
+ syslog(LOG_ERR, "TMPDIR cleanup(%s): execl(%s) failed: %m\n",
+ tpath, CLEANTMPCMD);
+ exit(1);
+ default:
+ /*
+ * Forget about child. We will exit, and
+ * /etc/init will pick it up.
+ */
+ break;
+ }
+}
+# endif /* CRAY */
+#endif /* defined(PARENT_DOES_UTMP) && !defined(NEWINIT) */
+
+/*
+ * rmut()
+ *
+ * This is the function called by cleanup() to
+ * remove the utmp entry for this person.
+ */
+
+#ifdef UTMPX
+ void
+rmut()
+{
+ register f;
+ int found = 0;
+ struct utmp *u, *utmp;
+ int nutmp;
+ struct stat statbf;
+
+ struct utmpx *utxp, utmpx;
+
+ /*
+ * This updates the utmpx and utmp entries and make a wtmp/x entry
+ */
+
+ SCPYN(utmpx.ut_line, line + sizeof("/dev/") - 1);
+ utxp = getutxline(&utmpx);
+ if (utxp) {
+ utxp->ut_type = DEAD_PROCESS;
+ utxp->ut_exit.e_termination = 0;
+ utxp->ut_exit.e_exit = 0;
+ (void) time(&utmpx.ut_tv.tv_sec);
+ utmpx.ut_tv.tv_usec = 0;
+ modutx(utxp);
+ }
+ endutxent();
+} /* end of rmut */
+#endif
+
+#if !defined(UTMPX) && !(defined(CRAY) || defined(__hpux)) && BSD <= 43
+ void
+rmut()
+{
+ register f;
+ int found = 0;
+ struct utmp *u, *utmp;
+ int nutmp;
+ struct stat statbf;
+
+ f = open(utmpf, O_RDWR);
+ if (f >= 0) {
+ (void) fstat(f, &statbf);
+ utmp = (struct utmp *)malloc((unsigned)statbf.st_size);
+ if (!utmp)
+ syslog(LOG_ERR, "utmp malloc failed");
+ if (statbf.st_size && utmp) {
+ nutmp = read(f, (char *)utmp, (int)statbf.st_size);
+ nutmp /= sizeof(struct utmp);
+
+ for (u = utmp ; u < &utmp[nutmp] ; u++) {
+ if (SCMPN(u->ut_line, line+5) ||
+ u->ut_name[0]==0)
+ continue;
+ (void) lseek(f, ((long)u)-((long)utmp), L_SET);
+ SCPYN(u->ut_name, "");
+ SCPYN(u->ut_host, "");
+ (void) time(&u->ut_time);
+ (void) write(f, (char *)u, sizeof(wtmp));
+ found++;
+ }
+ }
+ (void) close(f);
+ }
+ if (found) {
+ f = open(wtmpf, O_WRONLY|O_APPEND);
+ if (f >= 0) {
+ SCPYN(wtmp.ut_line, line+5);
+ SCPYN(wtmp.ut_name, "");
+ SCPYN(wtmp.ut_host, "");
+ (void) time(&wtmp.ut_time);
+ (void) write(f, (char *)&wtmp, sizeof(wtmp));
+ (void) close(f);
+ }
+ }
+ (void) chmod(line, 0666);
+ (void) chown(line, 0, 0);
+ line[strlen("/dev/")] = 'p';
+ (void) chmod(line, 0666);
+ (void) chown(line, 0, 0);
+} /* end of rmut */
+#endif /* CRAY */
+
+#ifdef __hpux
+rmut (line)
+char *line;
+{
+ struct utmp utmp;
+ struct utmp *utptr;
+ int fd; /* for /etc/wtmp */
+
+ utmp.ut_type = USER_PROCESS;
+ (void) strncpy(utmp.ut_id, line+12, sizeof(utmp.ut_id));
+ (void) setutent();
+ utptr = getutid(&utmp);
+ /* write it out only if it exists */
+ if (utptr) {
+ utptr->ut_type = DEAD_PROCESS;
+ utptr->ut_time = time((long *) 0);
+ (void) pututline(utptr);
+ /* set wtmp entry if wtmp file exists */
+ if ((fd = open(wtmpf, O_WRONLY | O_APPEND)) >= 0) {
+ (void) write(fd, utptr, sizeof(utmp));
+ (void) close(fd);
+ }
+ }
+ (void) endutent();
+
+ (void) chmod(line, 0666);
+ (void) chown(line, 0, 0);
+ line[14] = line[13];
+ line[13] = line[12];
+ line[8] = 'm';
+ line[9] = '/';
+ line[10] = 'p';
+ line[11] = 't';
+ line[12] = 'y';
+ (void) chmod(line, 0666);
+ (void) chown(line, 0, 0);
+}
+#endif
diff --git a/contrib/telnet/telnetd/telnetd.8 b/contrib/telnet/telnetd/telnetd.8
new file mode 100644
index 0000000..f618385
--- /dev/null
+++ b/contrib/telnet/telnetd/telnetd.8
@@ -0,0 +1,607 @@
+.\" Copyright (c) 1983, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\" must display the following acknowledgement:
+.\" This product includes software developed by the University of
+.\" California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)telnetd.8 8.4 (Berkeley) 6/1/94
+.\"
+.Dd June 1, 1994
+.Dt TELNETD 8
+.Os BSD 4.2
+.Sh NAME
+.Nm telnetd
+.Nd DARPA
+.Tn TELNET
+protocol server
+.Sh SYNOPSIS
+.Nm /usr/libexec/telnetd
+.Op Fl BUhlkns
+.Op Fl D Ar debugmode
+.Op Fl I Ns Ar initid
+.Op Fl S Ar tos
+.Op Fl X Ar authtype
+.Op Fl a Ar authmode
+.Op Fl edebug
+.Op Fl r Ns Ar lowpty-highpty
+.Op Fl u Ar len
+.Op Fl debug Op Ar port
+.Sh DESCRIPTION
+The
+.Nm telnetd
+command is a server which supports the
+.Tn DARPA
+standard
+.Tn TELNET
+virtual terminal protocol.
+.Nm Telnetd
+is normally invoked by the internet server (see
+.Xr inetd 8 )
+for requests to connect to the
+.Tn TELNET
+port as indicated by the
+.Pa /etc/services
+file (see
+.Xr services 5 ) .
+The
+.Fl debug
+option may be used to start up
+.Nm telnetd
+manually, instead of through
+.Xr inetd 8 .
+If started up this way,
+.Ar port
+may be specified to run
+.Nm telnetd
+on an alternate
+.Tn TCP
+port number.
+.Pp
+The
+.Nm telnetd
+command accepts the following options:
+.Bl -tag -width "-a authmode"
+.It Fl a Ar authmode
+This option may be used for specifying what mode should
+be used for authentication.
+Note that this option is only useful if
+.Nm telnetd
+has been compiled with support for the
+.Dv AUTHENTICATION
+option.
+There are several valid values for
+.Ar authmode:
+.Bl -tag -width debug
+.It debug
+Turns on authentication debugging code.
+.It user
+Only allow connections when the remote user
+can provide valid authentication information
+to identify the remote user,
+and is allowed access to the specified account
+without providing a password.
+.It valid
+Only allow connections when the remote user
+can provide valid authentication information
+to identify the remote user.
+The
+.Xr login 1
+command will provide any additional user verification
+needed if the remote user is not allowed automatic
+access to the specified account.
+.It other
+Only allow connections that supply some authentication information.
+This option is currently not supported
+by any of the existing authentication mechanisms,
+and is thus the same as specifying
+.Fl a
+.Cm valid .
+.It none
+This is the default state.
+Authentication information is not required.
+If no or insufficient authentication information
+is provided, then the
+.Xr login 1
+program will provide the necessary user
+verification.
+.It off
+This disables the authentication code.
+All user verification will happen through the
+.Xr login 1
+program.
+.El
+.It Fl B
+Specifies bftp server mode. In this mode,
+.Nm telnetd
+causes login to start a
+.Xr bftp 1
+session rather than the user's
+normal shell. In bftp daemon mode normal
+logins are not supported, and it must be used
+on a port other than the normal
+.Tn TELNET
+port.
+.It Fl D Ar debugmode
+This option may be used for debugging purposes.
+This allows
+.Nm telnetd
+to print out debugging information
+to the connection, allowing the user to see what
+.Nm telnetd
+is doing.
+There are several possible values for
+.Ar debugmode:
+.Bl -tag -width exercise
+.It Cm options
+Prints information about the negotiation of
+.Tn TELNET
+options.
+.It Cm report
+Prints the
+.Cm options
+information, plus some additional information
+about what processing is going on.
+.It Cm netdata
+Displays the data stream received by
+.Nm telnetd.
+.It Cm ptydata
+Displays data written to the pty.
+.It Cm exercise
+Has not been implemented yet.
+.El
+.It Fl debug
+Enables debugging on each socket created by
+.Nm telnetd
+(see
+.Dv SO_DEBUG
+in
+.Xr socket 2 ) .
+.It Fl edebug
+If
+.Nm telnetd
+has been compiled with support for data encryption, then the
+.Fl edebug
+option may be used to enable encryption debugging code.
+.It Fl h
+Disables the printing of host-specific information before
+login has been completed.
+.It Fl I Ar initid
+This option is only applicable to
+.Tn UNICOS
+systems prior to 7.0.
+It specifies the
+.Dv ID
+from
+.Pa /etc/inittab
+to use when init starts login sessions. The default
+.Dv ID
+is
+.Dv fe.
+.It Fl k
+This option is only useful if
+.Nm telnetd
+has been compiled with both linemode and kludge linemode
+support. If the
+.Fl k
+option is specified, then if the remote client does not
+support the
+.Dv LINEMODE
+option, then
+.Nm telnetd
+will operate in character at a time mode.
+It will still support kludge linemode, but will only
+go into kludge linemode if the remote client requests
+it.
+(This is done by by the client sending
+.Dv DONT SUPPRESS-GO-AHEAD
+and
+.Dv DONT ECHO . )
+The
+.Fl k
+option is most useful when there are remote clients
+that do not support kludge linemode, but pass the heuristic
+(if they respond with
+.Dv WILL TIMING-MARK
+in response to a
+.Dv DO TIMING-MARK)
+for kludge linemode support.
+.It Fl l
+Specifies line mode. Tries to force clients to use line-
+at-a-time mode.
+If the
+.Dv LINEMODE
+option is not supported, it will go
+into kludge linemode.
+.It Fl n
+Disable
+.Dv TCP
+keep-alives. Normally
+.Nm telnetd
+enables the
+.Tn TCP
+keep-alive mechanism to probe connections that
+have been idle for some period of time to determine
+if the client is still there, so that idle connections
+from machines that have crashed or can no longer
+be reached may be cleaned up.
+.It Fl r Ar lowpty-highpty
+This option is only enabled when
+.Nm telnetd
+is compiled for
+.Dv UNICOS.
+It specifies an inclusive range of pseudo-terminal devices to
+use. If the system has sysconf variable
+.Dv _SC_CRAY_NPTY
+configured, the default pty search range is 0 to
+.Dv _SC_CRAY_NPTY;
+otherwise, the default range is 0 to 128. Either
+.Ar lowpty
+or
+.Ar highpty
+may be omitted to allow changing
+either end of the search range. If
+.Ar lowpty
+is omitted, the - character is still required so that
+.Nm telnetd
+can differentiate
+.Ar highpty
+from
+.Ar lowpty .
+.It Fl s
+This option is only enabled if
+.Nm telnetd
+is compiled with support for
+.Tn SecurID
+cards.
+It causes the
+.Fl s
+option to be passed on to
+.Xr login 1 ,
+and thus is only useful if
+.Xr login 1
+supports the
+.Fl s
+flag to indicate that only
+.Tn SecurID
+validated logins are allowed, and is
+usually useful for controlling remote logins
+from outside of a firewall.
+.It Fl S Ar tos
+.It Fl u Ar len
+This option is used to specify the size of the field
+in the
+.Dv utmp
+structure that holds the remote host name.
+If the resolved host name is longer than
+.Ar len ,
+the dotted decimal value will be used instead.
+This allows hosts with very long host names that
+overflow this field to still be uniquely identified.
+Specifying
+.Fl u0
+indicates that only dotted decimal addresses
+should be put into the
+.Pa utmp
+file.
+.ne 1i
+.It Fl U
+This option causes
+.Nm telnetd
+to refuse connections from addresses that
+cannot be mapped back into a symbolic name
+via the
+.Xr gethostbyaddr 3
+routine.
+.It Fl X Ar authtype
+This option is only valid if
+.Nm telnetd
+has been built with support for the authentication option.
+It disables the use of
+.Ar authtype
+authentication, and
+can be used to temporarily disable
+a specific authentication type without having to recompile
+.Nm telnetd .
+.El
+.Pp
+.Nm Telnetd
+operates by allocating a pseudo-terminal device (see
+.Xr pty 4 )
+for a client, then creating a login process which has
+the slave side of the pseudo-terminal as
+.Dv stdin ,
+.Dv stdout
+and
+.Dv stderr .
+.Nm Telnetd
+manipulates the master side of the pseudo-terminal,
+implementing the
+.Tn TELNET
+protocol and passing characters
+between the remote client and the login process.
+.Pp
+When a
+.Tn TELNET
+session is started up,
+.Nm telnetd
+sends
+.Tn TELNET
+options to the client side indicating
+a willingness to do the
+following
+.Tn TELNET
+options, which are described in more detail below:
+.Bd -literal -offset indent
+DO AUTHENTICATION
+WILL ENCRYPT
+DO TERMINAL TYPE
+DO TSPEED
+DO XDISPLOC
+DO NEW-ENVIRON
+DO ENVIRON
+WILL SUPPRESS GO AHEAD
+DO ECHO
+DO LINEMODE
+DO NAWS
+WILL STATUS
+DO LFLOW
+DO TIMING-MARK
+.Ed
+.Pp
+The pseudo-terminal allocated to the client is configured
+to operate in \*(lqcooked\*(rq mode, and with
+.Dv XTABS and
+.Dv CRMOD
+enabled (see
+.Xr tty 4 ) .
+.Pp
+.Nm Telnetd
+has support for enabling locally the following
+.Tn TELNET
+options:
+.Bl -tag -width "DO AUTHENTICATION"
+.It "WILL ECHO"
+When the
+.Dv LINEMODE
+option is enabled, a
+.Dv WILL ECHO
+or
+.Dv WONT ECHO
+will be sent to the client to indicate the
+current state of terminal echoing.
+When terminal echo is not desired, a
+.Dv WILL ECHO
+is sent to indicate that
+.Tn telnetd
+will take care of echoing any data that needs to be
+echoed to the terminal, and then nothing is echoed.
+When terminal echo is desired, a
+.Dv WONT ECHO
+is sent to indicate that
+.Tn telnetd
+will not be doing any terminal echoing, so the
+client should do any terminal echoing that is needed.
+.It "WILL BINARY"
+Indicates that the client is willing to send a
+8 bits of data, rather than the normal 7 bits
+of the Network Virtual Terminal.
+.It "WILL SGA"
+Indicates that it will not be sending
+.Dv IAC GA,
+go ahead, commands.
+.It "WILL STATUS"
+Indicates a willingness to send the client, upon
+request, of the current status of all
+.Tn TELNET
+options.
+.It "WILL TIMING-MARK"
+Whenever a
+.Dv DO TIMING-MARK
+command is received, it is always responded
+to with a
+.Dv WILL TIMING-MARK
+.ne 1i
+.It "WILL LOGOUT"
+When a
+.Dv DO LOGOUT
+is received, a
+.Dv WILL LOGOUT
+is sent in response, and the
+.Tn TELNET
+session is shut down.
+.It "WILL ENCRYPT"
+Only sent if
+.Nm telnetd
+is compiled with support for data encryption, and
+indicates a willingness to decrypt
+the data stream.
+.El
+.Pp
+.Nm Telnetd
+has support for enabling remotely the following
+.Tn TELNET
+options:
+.Bl -tag -width "DO AUTHENTICATION"
+.It "DO BINARY"
+Sent to indicate that
+.Tn telnetd
+is willing to receive an 8 bit data stream.
+.It "DO LFLOW"
+Requests that the client handle flow control
+characters remotely.
+.It "DO ECHO"
+This is not really supported, but is sent to identify a 4.2BSD
+.Xr telnet 1
+client, which will improperly respond with
+.Dv WILL ECHO.
+If a
+.Dv WILL ECHO
+is received, a
+.Dv DONT ECHO
+will be sent in response.
+.It "DO TERMINAL-TYPE"
+Indicates a desire to be able to request the
+name of the type of terminal that is attached
+to the client side of the connection.
+.It "DO SGA"
+Indicates that it does not need to receive
+.Dv IAC GA,
+the go ahead command.
+.It "DO NAWS"
+Requests that the client inform the server when
+the window (display) size changes.
+.It "DO TERMINAL-SPEED"
+Indicates a desire to be able to request information
+about the speed of the serial line to which
+the client is attached.
+.It "DO XDISPLOC"
+Indicates a desire to be able to request the name
+of the X windows display that is associated with
+the telnet client.
+.It "DO NEW-ENVIRON"
+Indicates a desire to be able to request environment
+variable information, as described in RFC 1572.
+.It "DO ENVIRON"
+Indicates a desire to be able to request environment
+variable information, as described in RFC 1408.
+.It "DO LINEMODE"
+Only sent if
+.Nm telnetd
+is compiled with support for linemode, and
+requests that the client do line by line processing.
+.It "DO TIMING-MARK"
+Only sent if
+.Nm telnetd
+is compiled with support for both linemode and
+kludge linemode, and the client responded with
+.Dv WONT LINEMODE.
+If the client responds with
+.Dv WILL TM,
+the it is assumed that the client supports
+kludge linemode.
+Note that the
+.Op Fl k
+option can be used to disable this.
+.It "DO AUTHENTICATION"
+Only sent if
+.Nm telnetd
+is compiled with support for authentication, and
+indicates a willingness to receive authentication
+information for automatic login.
+.It "DO ENCRYPT"
+Only sent if
+.Nm telnetd
+is compiled with support for data encryption, and
+indicates a willingness to decrypt
+the data stream.
+.Sh ENVIRONMENT
+.Sh FILES
+.Pa /etc/services
+.br
+.Pa /etc/inittab
+(UNICOS systems only)
+.br
+.Pa /etc/iptos
+(if supported)
+.br
+.Pa /usr/ucb/bftp
+(if supported)
+.Sh "SEE ALSO"
+.Xr telnet 1 ,
+.Xr login 1 ,
+.Xr bftp 1
+(if supported)
+.Sh STANDARDS
+.Bl -tag -compact -width RFC-1572
+.It Cm RFC-854
+.Tn TELNET
+PROTOCOL SPECIFICATION
+.It Cm RFC-855
+TELNET OPTION SPECIFICATIONS
+.It Cm RFC-856
+TELNET BINARY TRANSMISSION
+.It Cm RFC-857
+TELNET ECHO OPTION
+.It Cm RFC-858
+TELNET SUPPRESS GO AHEAD OPTION
+.It Cm RFC-859
+TELNET STATUS OPTION
+.It Cm RFC-860
+TELNET TIMING MARK OPTION
+.It Cm RFC-861
+TELNET EXTENDED OPTIONS - LIST OPTION
+.It Cm RFC-885
+TELNET END OF RECORD OPTION
+.It Cm RFC-1073
+Telnet Window Size Option
+.It Cm RFC-1079
+Telnet Terminal Speed Option
+.It Cm RFC-1091
+Telnet Terminal-Type Option
+.It Cm RFC-1096
+Telnet X Display Location Option
+.It Cm RFC-1123
+Requirements for Internet Hosts -- Application and Support
+.It Cm RFC-1184
+Telnet Linemode Option
+.It Cm RFC-1372
+Telnet Remote Flow Control Option
+.It Cm RFC-1416
+Telnet Authentication Option
+.It Cm RFC-1411
+Telnet Authentication: Kerberos Version 4
+.It Cm RFC-1412
+Telnet Authentication: SPX
+.It Cm RFC-1571
+Telnet Environment Option Interoperability Issues
+.It Cm RFC-1572
+Telnet Environment Option
+.Sh BUGS
+Some
+.Tn TELNET
+commands are only partially implemented.
+.Pp
+Because of bugs in the original 4.2 BSD
+.Xr telnet 1 ,
+.Nm telnetd
+performs some dubious protocol exchanges to try to discover if the remote
+client is, in fact, a 4.2 BSD
+.Xr telnet 1 .
+.Pp
+Binary mode
+has no common interpretation except between similar operating systems
+(Unix in this case).
+.Pp
+The terminal type name received from the remote client is converted to
+lower case.
+.Pp
+.Nm Telnetd
+never sends
+.Tn TELNET
+.Dv IAC GA
+(go ahead) commands.
diff --git a/contrib/telnet/telnetd/telnetd.c b/contrib/telnet/telnetd/telnetd.c
new file mode 100644
index 0000000..70c0fc0
--- /dev/null
+++ b/contrib/telnet/telnetd/telnetd.c
@@ -0,0 +1,1608 @@
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1989, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)telnetd.c 8.4 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#include "telnetd.h"
+#include "pathnames.h"
+
+#if defined(_SC_CRAY_SECURE_SYS) && !defined(SCM_SECURITY)
+/*
+ * UNICOS 6.0/6.1 do not have SCM_SECURITY defined, so we can
+ * use it to tell us to turn off all the socket security code,
+ * since that is only used in UNICOS 7.0 and later.
+ */
+# undef _SC_CRAY_SECURE_SYS
+#endif
+
+#if defined(_SC_CRAY_SECURE_SYS)
+#include <sys/sysv.h>
+#include <sys/secdev.h>
+# ifdef SO_SEC_MULTI /* 8.0 code */
+#include <sys/secparm.h>
+#include <sys/usrv.h>
+# endif /* SO_SEC_MULTI */
+int secflag;
+char tty_dev[16];
+struct secdev dv;
+struct sysv sysv;
+# ifdef SO_SEC_MULTI /* 8.0 code */
+struct socksec ss;
+# else /* SO_SEC_MULTI */ /* 7.0 code */
+struct socket_security ss;
+# endif /* SO_SEC_MULTI */
+#endif /* _SC_CRAY_SECURE_SYS */
+
+#if defined(AUTHENTICATION)
+#include <libtelnet/auth.h>
+int auth_level = 0;
+#endif
+#if defined(SecurID)
+int require_SecurID = 0;
+#endif
+
+extern int utmp_len;
+int registerd_host_only = 0;
+
+#ifdef STREAMSPTY
+# include <stropts.h>
+# include <termio.h>
+/* make sure we don't get the bsd version */
+# include "/usr/include/sys/tty.h"
+# include <sys/ptyvar.h>
+
+/*
+ * Because of the way ptyibuf is used with streams messages, we need
+ * ptyibuf+1 to be on a full-word boundary. The following wierdness
+ * is simply to make that happen.
+ */
+long ptyibufbuf[BUFSIZ/sizeof(long)+1];
+char *ptyibuf = ((char *)&ptyibufbuf[1])-1;
+char *ptyip = ((char *)&ptyibufbuf[1])-1;
+char ptyibuf2[BUFSIZ];
+unsigned char ctlbuf[BUFSIZ];
+struct strbuf strbufc, strbufd;
+
+int readstream();
+
+#else /* ! STREAMPTY */
+
+/*
+ * I/O data buffers,
+ * pointers, and counters.
+ */
+char ptyibuf[BUFSIZ], *ptyip = ptyibuf;
+char ptyibuf2[BUFSIZ];
+
+#endif /* ! STREAMPTY */
+
+int hostinfo = 1; /* do we print login banner? */
+
+#ifdef CRAY
+extern int newmap; /* nonzero if \n maps to ^M^J */
+int lowpty = 0, highpty; /* low, high pty numbers */
+#endif /* CRAY */
+
+int debug = 0;
+int keepalive = 1;
+char *progname;
+
+extern void usage P((void));
+
+/*
+ * The string to pass to getopt(). We do it this way so
+ * that only the actual options that we support will be
+ * passed off to getopt().
+ */
+char valid_opts[] = {
+ 'd', ':', 'h', 'k', 'n', 'S', ':', 'u', ':', 'U',
+#ifdef AUTHENTICATION
+ 'a', ':', 'X', ':',
+#endif
+#ifdef BFTPDAEMON
+ 'B',
+#endif
+#ifdef DIAGNOSTICS
+ 'D', ':',
+#endif
+#ifdef ENCRYPTION
+ 'e', ':',
+#endif
+#if defined(CRAY) && defined(NEWINIT)
+ 'I', ':',
+#endif
+#ifdef LINEMODE
+ 'l',
+#endif
+#ifdef CRAY
+ 'r', ':',
+#endif
+#ifdef SecurID
+ 's',
+#endif
+ '\0'
+};
+
+main(argc, argv)
+ char *argv[];
+{
+ struct sockaddr_in from;
+ int on = 1, fromlen;
+ register int ch;
+ extern char *optarg;
+ extern int optind;
+#if defined(IPPROTO_IP) && defined(IP_TOS)
+ int tos = -1;
+#endif
+
+ pfrontp = pbackp = ptyobuf;
+ netip = netibuf;
+ nfrontp = nbackp = netobuf;
+#ifdef ENCRYPTION
+ nclearto = 0;
+#endif /* ENCRYPTION */
+
+ progname = *argv;
+
+#ifdef CRAY
+ /*
+ * Get number of pty's before trying to process options,
+ * which may include changing pty range.
+ */
+ highpty = getnpty();
+#endif /* CRAY */
+
+ while ((ch = getopt(argc, argv, valid_opts)) != EOF) {
+ switch(ch) {
+
+#ifdef AUTHENTICATION
+ case 'a':
+ /*
+ * Check for required authentication level
+ */
+ if (strcmp(optarg, "debug") == 0) {
+ extern int auth_debug_mode;
+ auth_debug_mode = 1;
+ } else if (strcasecmp(optarg, "none") == 0) {
+ auth_level = 0;
+ } else if (strcasecmp(optarg, "other") == 0) {
+ auth_level = AUTH_OTHER;
+ } else if (strcasecmp(optarg, "user") == 0) {
+ auth_level = AUTH_USER;
+ } else if (strcasecmp(optarg, "valid") == 0) {
+ auth_level = AUTH_VALID;
+ } else if (strcasecmp(optarg, "off") == 0) {
+ /*
+ * This hack turns off authentication
+ */
+ auth_level = -1;
+ } else {
+ fprintf(stderr,
+ "telnetd: unknown authorization level for -a\n");
+ }
+ break;
+#endif /* AUTHENTICATION */
+
+#ifdef BFTPDAEMON
+ case 'B':
+ bftpd++;
+ break;
+#endif /* BFTPDAEMON */
+
+ case 'd':
+ if (strcmp(optarg, "ebug") == 0) {
+ debug++;
+ break;
+ }
+ usage();
+ /* NOTREACHED */
+ break;
+
+#ifdef DIAGNOSTICS
+ case 'D':
+ /*
+ * Check for desired diagnostics capabilities.
+ */
+ if (!strcmp(optarg, "report")) {
+ diagnostic |= TD_REPORT|TD_OPTIONS;
+ } else if (!strcmp(optarg, "exercise")) {
+ diagnostic |= TD_EXERCISE;
+ } else if (!strcmp(optarg, "netdata")) {
+ diagnostic |= TD_NETDATA;
+ } else if (!strcmp(optarg, "ptydata")) {
+ diagnostic |= TD_PTYDATA;
+ } else if (!strcmp(optarg, "options")) {
+ diagnostic |= TD_OPTIONS;
+ } else {
+ usage();
+ /* NOT REACHED */
+ }
+ break;
+#endif /* DIAGNOSTICS */
+
+#ifdef ENCRYPTION
+ case 'e':
+ if (strcmp(optarg, "debug") == 0) {
+ extern int encrypt_debug_mode;
+ encrypt_debug_mode = 1;
+ break;
+ }
+ usage();
+ /* NOTREACHED */
+ break;
+#endif /* ENCRYPTION */
+
+ case 'h':
+ hostinfo = 0;
+ break;
+
+#if defined(CRAY) && defined(NEWINIT)
+ case 'I':
+ {
+ extern char *gen_id;
+ gen_id = optarg;
+ break;
+ }
+#endif /* defined(CRAY) && defined(NEWINIT) */
+
+#ifdef LINEMODE
+ case 'l':
+ alwayslinemode = 1;
+ break;
+#endif /* LINEMODE */
+
+ case 'k':
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ lmodetype = NO_AUTOKLUDGE;
+#else
+ /* ignore -k option if built without kludge linemode */
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+ break;
+
+ case 'n':
+ keepalive = 0;
+ break;
+
+#ifdef CRAY
+ case 'r':
+ {
+ char *strchr();
+ char *c;
+
+ /*
+ * Allow the specification of alterations
+ * to the pty search range. It is legal to
+ * specify only one, and not change the
+ * other from its default.
+ */
+ c = strchr(optarg, '-');
+ if (c) {
+ *c++ = '\0';
+ highpty = atoi(c);
+ }
+ if (*optarg != '\0')
+ lowpty = atoi(optarg);
+ if ((lowpty > highpty) || (lowpty < 0) ||
+ (highpty > 32767)) {
+ usage();
+ /* NOT REACHED */
+ }
+ break;
+ }
+#endif /* CRAY */
+
+#ifdef SecurID
+ case 's':
+ /* SecurID required */
+ require_SecurID = 1;
+ break;
+#endif /* SecurID */
+ case 'S':
+#ifdef HAS_GETTOS
+ if ((tos = parsetos(optarg, "tcp")) < 0)
+ fprintf(stderr, "%s%s%s\n",
+ "telnetd: Bad TOS argument '", optarg,
+ "'; will try to use default TOS");
+#else
+ fprintf(stderr, "%s%s\n", "TOS option unavailable; ",
+ "-S flag not supported\n");
+#endif
+ break;
+
+ case 'u':
+ utmp_len = atoi(optarg);
+ break;
+
+ case 'U':
+ registerd_host_only = 1;
+ break;
+
+#ifdef AUTHENTICATION
+ case 'X':
+ /*
+ * Check for invalid authentication types
+ */
+ auth_disable_name(optarg);
+ break;
+#endif /* AUTHENTICATION */
+
+ default:
+ fprintf(stderr, "telnetd: %c: unknown option\n", ch);
+ /* FALLTHROUGH */
+ case '?':
+ usage();
+ /* NOTREACHED */
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ if (debug) {
+ int s, ns, foo;
+ struct servent *sp;
+ static struct sockaddr_in sin = { AF_INET };
+
+ if (argc > 1) {
+ usage();
+ /* NOT REACHED */
+ } else if (argc == 1) {
+ if (sp = getservbyname(*argv, "tcp")) {
+ sin.sin_port = sp->s_port;
+ } else {
+ sin.sin_port = atoi(*argv);
+ if ((int)sin.sin_port <= 0) {
+ fprintf(stderr, "telnetd: %s: bad port #\n", *argv);
+ usage();
+ /* NOT REACHED */
+ }
+ sin.sin_port = htons((u_short)sin.sin_port);
+ }
+ } else {
+ sp = getservbyname("telnet", "tcp");
+ if (sp == 0) {
+ fprintf(stderr, "telnetd: tcp/telnet: unknown service\n");
+ exit(1);
+ }
+ sin.sin_port = sp->s_port;
+ }
+
+ s = socket(AF_INET, SOCK_STREAM, 0);
+ if (s < 0) {
+ perror("telnetd: socket");;
+ exit(1);
+ }
+ (void) setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
+ (char *)&on, sizeof(on));
+ if (bind(s, (struct sockaddr *)&sin, sizeof sin) < 0) {
+ perror("bind");
+ exit(1);
+ }
+ if (listen(s, 1) < 0) {
+ perror("listen");
+ exit(1);
+ }
+ foo = sizeof sin;
+ ns = accept(s, (struct sockaddr *)&sin, &foo);
+ if (ns < 0) {
+ perror("accept");
+ exit(1);
+ }
+ (void) dup2(ns, 0);
+ (void) close(ns);
+ (void) close(s);
+#ifdef convex
+ } else if (argc == 1) {
+ ; /* VOID*/ /* Just ignore the host/port name */
+#endif
+ } else if (argc > 0) {
+ usage();
+ /* NOT REACHED */
+ }
+
+#if defined(_SC_CRAY_SECURE_SYS)
+ secflag = sysconf(_SC_CRAY_SECURE_SYS);
+
+ /*
+ * Get socket's security label
+ */
+ if (secflag) {
+ int szss = sizeof(ss);
+#ifdef SO_SEC_MULTI /* 8.0 code */
+ int sock_multi;
+ int szi = sizeof(int);
+#endif /* SO_SEC_MULTI */
+
+ memset((char *)&dv, 0, sizeof(dv));
+
+ if (getsysv(&sysv, sizeof(struct sysv)) != 0) {
+ perror("getsysv");
+ exit(1);
+ }
+
+ /*
+ * Get socket security label and set device values
+ * {security label to be set on ttyp device}
+ */
+#ifdef SO_SEC_MULTI /* 8.0 code */
+ if ((getsockopt(0, SOL_SOCKET, SO_SECURITY,
+ (char *)&ss, &szss) < 0) ||
+ (getsockopt(0, SOL_SOCKET, SO_SEC_MULTI,
+ (char *)&sock_multi, &szi) < 0)) {
+ perror("getsockopt");
+ exit(1);
+ } else {
+ dv.dv_actlvl = ss.ss_actlabel.lt_level;
+ dv.dv_actcmp = ss.ss_actlabel.lt_compart;
+ if (!sock_multi) {
+ dv.dv_minlvl = dv.dv_maxlvl = dv.dv_actlvl;
+ dv.dv_valcmp = dv.dv_actcmp;
+ } else {
+ dv.dv_minlvl = ss.ss_minlabel.lt_level;
+ dv.dv_maxlvl = ss.ss_maxlabel.lt_level;
+ dv.dv_valcmp = ss.ss_maxlabel.lt_compart;
+ }
+ dv.dv_devflg = 0;
+ }
+#else /* SO_SEC_MULTI */ /* 7.0 code */
+ if (getsockopt(0, SOL_SOCKET, SO_SECURITY,
+ (char *)&ss, &szss) >= 0) {
+ dv.dv_actlvl = ss.ss_slevel;
+ dv.dv_actcmp = ss.ss_compart;
+ dv.dv_minlvl = ss.ss_minlvl;
+ dv.dv_maxlvl = ss.ss_maxlvl;
+ dv.dv_valcmp = ss.ss_maxcmp;
+ }
+#endif /* SO_SEC_MULTI */
+ }
+#endif /* _SC_CRAY_SECURE_SYS */
+
+ openlog("telnetd", LOG_PID | LOG_ODELAY, LOG_DAEMON);
+ fromlen = sizeof (from);
+ if (getpeername(0, (struct sockaddr *)&from, &fromlen) < 0) {
+ fprintf(stderr, "%s: ", progname);
+ perror("getpeername");
+ _exit(1);
+ }
+ if (keepalive &&
+ setsockopt(0, SOL_SOCKET, SO_KEEPALIVE,
+ (char *)&on, sizeof (on)) < 0) {
+ syslog(LOG_WARNING, "setsockopt (SO_KEEPALIVE): %m");
+ }
+
+#if defined(IPPROTO_IP) && defined(IP_TOS)
+ {
+# if defined(HAS_GETTOS)
+ struct tosent *tp;
+ if (tos < 0 && (tp = gettosbyname("telnet", "tcp")))
+ tos = tp->t_tos;
+# endif
+ if (tos < 0)
+ tos = 020; /* Low Delay bit */
+ if (tos
+ && (setsockopt(0, IPPROTO_IP, IP_TOS,
+ (char *)&tos, sizeof(tos)) < 0)
+ && (errno != ENOPROTOOPT) )
+ syslog(LOG_WARNING, "setsockopt (IP_TOS): %m");
+ }
+#endif /* defined(IPPROTO_IP) && defined(IP_TOS) */
+ net = 0;
+ doit(&from);
+ /* NOTREACHED */
+} /* end of main */
+
+ void
+usage()
+{
+ fprintf(stderr, "Usage: telnetd");
+#ifdef AUTHENTICATION
+ fprintf(stderr, " [-a (debug|other|user|valid|off|none)]\n\t");
+#endif
+#ifdef BFTPDAEMON
+ fprintf(stderr, " [-B]");
+#endif
+ fprintf(stderr, " [-debug]");
+#ifdef DIAGNOSTICS
+ fprintf(stderr, " [-D (options|report|exercise|netdata|ptydata)]\n\t");
+#endif
+#ifdef AUTHENTICATION
+ fprintf(stderr, " [-edebug]");
+#endif
+ fprintf(stderr, " [-h]");
+#if defined(CRAY) && defined(NEWINIT)
+ fprintf(stderr, " [-Iinitid]");
+#endif
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ fprintf(stderr, " [-k]");
+#endif
+#ifdef LINEMODE
+ fprintf(stderr, " [-l]");
+#endif
+ fprintf(stderr, " [-n]");
+#ifdef CRAY
+ fprintf(stderr, " [-r[lowpty]-[highpty]]");
+#endif
+ fprintf(stderr, "\n\t");
+#ifdef SecurID
+ fprintf(stderr, " [-s]");
+#endif
+#ifdef HAS_GETTOS
+ fprintf(stderr, " [-S tos]");
+#endif
+#ifdef AUTHENTICATION
+ fprintf(stderr, " [-X auth-type]");
+#endif
+ fprintf(stderr, " [-u utmp_hostname_length] [-U]");
+ fprintf(stderr, " [port]\n");
+ exit(1);
+}
+
+/*
+ * getterminaltype
+ *
+ * Ask the other end to send along its terminal type and speed.
+ * Output is the variable terminaltype filled in.
+ */
+static unsigned char ttytype_sbbuf[] = {
+ IAC, SB, TELOPT_TTYPE, TELQUAL_SEND, IAC, SE
+};
+
+ int
+getterminaltype(name)
+ char *name;
+{
+ int retval = -1;
+ void _gettermname();
+
+ settimer(baseline);
+#if defined(AUTHENTICATION)
+ /*
+ * Handle the Authentication option before we do anything else.
+ */
+ send_do(TELOPT_AUTHENTICATION, 1);
+ while (his_will_wont_is_changing(TELOPT_AUTHENTICATION))
+ ttloop();
+ if (his_state_is_will(TELOPT_AUTHENTICATION)) {
+ retval = auth_wait(name);
+ }
+#endif
+
+#ifdef ENCRYPTION
+ send_will(TELOPT_ENCRYPT, 1);
+#endif /* ENCRYPTION */
+ send_do(TELOPT_TTYPE, 1);
+ send_do(TELOPT_TSPEED, 1);
+ send_do(TELOPT_XDISPLOC, 1);
+ send_do(TELOPT_NEW_ENVIRON, 1);
+ send_do(TELOPT_OLD_ENVIRON, 1);
+ while (
+#ifdef ENCRYPTION
+ his_do_dont_is_changing(TELOPT_ENCRYPT) ||
+#endif /* ENCRYPTION */
+ his_will_wont_is_changing(TELOPT_TTYPE) ||
+ his_will_wont_is_changing(TELOPT_TSPEED) ||
+ his_will_wont_is_changing(TELOPT_XDISPLOC) ||
+ his_will_wont_is_changing(TELOPT_NEW_ENVIRON) ||
+ his_will_wont_is_changing(TELOPT_OLD_ENVIRON)) {
+ ttloop();
+ }
+#ifdef ENCRYPTION
+ /*
+ * Wait for the negotiation of what type of encryption we can
+ * send with. If autoencrypt is not set, this will just return.
+ */
+ if (his_state_is_will(TELOPT_ENCRYPT)) {
+ encrypt_wait();
+ }
+#endif /* ENCRYPTION */
+ if (his_state_is_will(TELOPT_TSPEED)) {
+ static unsigned char sb[] =
+ { IAC, SB, TELOPT_TSPEED, TELQUAL_SEND, IAC, SE };
+
+ memmove(nfrontp, sb, sizeof sb);
+ nfrontp += sizeof sb;
+ DIAG(TD_OPTIONS, printsub('>', sb + 2, sizeof sb - 2););
+ }
+ if (his_state_is_will(TELOPT_XDISPLOC)) {
+ static unsigned char sb[] =
+ { IAC, SB, TELOPT_XDISPLOC, TELQUAL_SEND, IAC, SE };
+
+ memmove(nfrontp, sb, sizeof sb);
+ nfrontp += sizeof sb;
+ DIAG(TD_OPTIONS, printsub('>', sb + 2, sizeof sb - 2););
+ }
+ if (his_state_is_will(TELOPT_NEW_ENVIRON)) {
+ static unsigned char sb[] =
+ { IAC, SB, TELOPT_NEW_ENVIRON, TELQUAL_SEND, IAC, SE };
+
+ memmove(nfrontp, sb, sizeof sb);
+ nfrontp += sizeof sb;
+ DIAG(TD_OPTIONS, printsub('>', sb + 2, sizeof sb - 2););
+ }
+ else if (his_state_is_will(TELOPT_OLD_ENVIRON)) {
+ static unsigned char sb[] =
+ { IAC, SB, TELOPT_OLD_ENVIRON, TELQUAL_SEND, IAC, SE };
+
+ memmove(nfrontp, sb, sizeof sb);
+ nfrontp += sizeof sb;
+ DIAG(TD_OPTIONS, printsub('>', sb + 2, sizeof sb - 2););
+ }
+ if (his_state_is_will(TELOPT_TTYPE)) {
+
+ memmove(nfrontp, ttytype_sbbuf, sizeof ttytype_sbbuf);
+ nfrontp += sizeof ttytype_sbbuf;
+ DIAG(TD_OPTIONS, printsub('>', ttytype_sbbuf + 2,
+ sizeof ttytype_sbbuf - 2););
+ }
+ if (his_state_is_will(TELOPT_TSPEED)) {
+ while (sequenceIs(tspeedsubopt, baseline))
+ ttloop();
+ }
+ if (his_state_is_will(TELOPT_XDISPLOC)) {
+ while (sequenceIs(xdisplocsubopt, baseline))
+ ttloop();
+ }
+ if (his_state_is_will(TELOPT_NEW_ENVIRON)) {
+ while (sequenceIs(environsubopt, baseline))
+ ttloop();
+ }
+ if (his_state_is_will(TELOPT_OLD_ENVIRON)) {
+ while (sequenceIs(oenvironsubopt, baseline))
+ ttloop();
+ }
+ if (his_state_is_will(TELOPT_TTYPE)) {
+ char first[256], last[256];
+
+ while (sequenceIs(ttypesubopt, baseline))
+ ttloop();
+
+ /*
+ * If the other side has already disabled the option, then
+ * we have to just go with what we (might) have already gotten.
+ */
+ if (his_state_is_will(TELOPT_TTYPE) && !terminaltypeok(terminaltype)) {
+ (void) strncpy(first, terminaltype, sizeof(first));
+ for(;;) {
+ /*
+ * Save the unknown name, and request the next name.
+ */
+ (void) strncpy(last, terminaltype, sizeof(last));
+ _gettermname();
+ if (terminaltypeok(terminaltype))
+ break;
+ if ((strncmp(last, terminaltype, sizeof(last)) == 0) ||
+ his_state_is_wont(TELOPT_TTYPE)) {
+ /*
+ * We've hit the end. If this is the same as
+ * the first name, just go with it.
+ */
+ if (strncmp(first, terminaltype, sizeof(first)) == 0)
+ break;
+ /*
+ * Get the terminal name one more time, so that
+ * RFC1091 compliant telnets will cycle back to
+ * the start of the list.
+ */
+ _gettermname();
+ if (strncmp(first, terminaltype, sizeof(first)) != 0)
+ (void) strncpy(terminaltype, first, sizeof(first));
+ break;
+ }
+ }
+ }
+ }
+ return(retval);
+} /* end of getterminaltype */
+
+ void
+_gettermname()
+{
+ /*
+ * If the client turned off the option,
+ * we can't send another request, so we
+ * just return.
+ */
+ if (his_state_is_wont(TELOPT_TTYPE))
+ return;
+ settimer(baseline);
+ memmove(nfrontp, ttytype_sbbuf, sizeof ttytype_sbbuf);
+ nfrontp += sizeof ttytype_sbbuf;
+ DIAG(TD_OPTIONS, printsub('>', ttytype_sbbuf + 2,
+ sizeof ttytype_sbbuf - 2););
+ while (sequenceIs(ttypesubopt, baseline))
+ ttloop();
+}
+
+ int
+terminaltypeok(s)
+ char *s;
+{
+ char buf[1024];
+
+ if (terminaltype == NULL)
+ return(1);
+
+ /*
+ * tgetent() will return 1 if the type is known, and
+ * 0 if it is not known. If it returns -1, it couldn't
+ * open the database. But if we can't open the database,
+ * it won't help to say we failed, because we won't be
+ * able to verify anything else. So, we treat -1 like 1.
+ */
+ if (tgetent(buf, s) == 0)
+ return(0);
+ return(1);
+}
+
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN 64
+#endif /* MAXHOSTNAMELEN */
+
+char *hostname;
+char host_name[MAXHOSTNAMELEN];
+char remote_host_name[MAXHOSTNAMELEN];
+
+#ifndef convex
+extern void telnet P((int, int));
+#else
+extern void telnet P((int, int, char *));
+#endif
+
+/*
+ * Get a pty, scan input lines.
+ */
+doit(who)
+ struct sockaddr_in *who;
+{
+ char *host, *inet_ntoa();
+ int t;
+ struct hostent *hp;
+ int level;
+ int ptynum;
+ char user_name[256];
+
+ /*
+ * Find an available pty to use.
+ */
+#ifndef convex
+ pty = getpty(&ptynum);
+ if (pty < 0)
+ fatal(net, "All network ports in use");
+#else
+ for (;;) {
+ char *lp;
+ extern char *line, *getpty();
+
+ if ((lp = getpty()) == NULL)
+ fatal(net, "Out of ptys");
+
+ if ((pty = open(lp, 2)) >= 0) {
+ strcpy(line,lp);
+ line[5] = 't';
+ break;
+ }
+ }
+#endif
+
+#if defined(_SC_CRAY_SECURE_SYS)
+ /*
+ * set ttyp line security label
+ */
+ if (secflag) {
+ char slave_dev[16];
+
+ sprintf(tty_dev, "/dev/pty/%03d", ptynum);
+ if (setdevs(tty_dev, &dv) < 0)
+ fatal(net, "cannot set pty security");
+ sprintf(slave_dev, "/dev/ttyp%03d", ptynum);
+ if (setdevs(slave_dev, &dv) < 0)
+ fatal(net, "cannot set tty security");
+ }
+#endif /* _SC_CRAY_SECURE_SYS */
+
+ /* get name of connected client */
+ hp = gethostbyaddr((char *)&who->sin_addr, sizeof (struct in_addr),
+ who->sin_family);
+
+ if (hp == NULL && registerd_host_only) {
+ fatal(net, "Couldn't resolve your address into a host name.\r\n\
+ Please contact your net administrator");
+ } else if (hp &&
+ (strlen(hp->h_name) <= (unsigned int)((utmp_len < 0) ? -utmp_len
+ : utmp_len))) {
+ host = hp->h_name;
+ } else {
+ host = inet_ntoa(who->sin_addr);
+ }
+ /*
+ * We must make a copy because Kerberos is probably going
+ * to also do a gethost* and overwrite the static data...
+ */
+ strncpy(remote_host_name, host, sizeof(remote_host_name)-1);
+ remote_host_name[sizeof(remote_host_name)-1] = 0;
+ host = remote_host_name;
+
+ (void) gethostname(host_name, sizeof (host_name));
+ hostname = host_name;
+
+#if defined(AUTHENTICATION) || defined(ENCRYPTION)
+ auth_encrypt_init(hostname, host, "TELNETD", 1);
+#endif
+
+ init_env();
+ /*
+ * get terminal type.
+ */
+ *user_name = 0;
+ level = getterminaltype(user_name);
+ setenv("TERM", terminaltype ? terminaltype : "network", 1);
+
+ /*
+ * Start up the login process on the slave side of the terminal
+ */
+#ifndef convex
+ startslave(host, level, user_name);
+
+#if defined(_SC_CRAY_SECURE_SYS)
+ if (secflag) {
+ if (setulvl(dv.dv_actlvl) < 0)
+ fatal(net,"cannot setulvl()");
+ if (setucmp(dv.dv_actcmp) < 0)
+ fatal(net, "cannot setucmp()");
+ }
+#endif /* _SC_CRAY_SECURE_SYS */
+
+ telnet(net, pty); /* begin server processing */
+#else
+ telnet(net, pty, host);
+#endif
+ /*NOTREACHED*/
+} /* end of doit */
+
+#if defined(CRAY2) && defined(UNICOS5) && defined(UNICOS50)
+ int
+Xterm_output(ibufp, obuf, icountp, ocount)
+ char **ibufp, *obuf;
+ int *icountp, ocount;
+{
+ int ret;
+ ret = term_output(*ibufp, obuf, *icountp, ocount);
+ *ibufp += *icountp;
+ *icountp = 0;
+ return(ret);
+}
+#define term_output Xterm_output
+#endif /* defined(CRAY2) && defined(UNICOS5) && defined(UNICOS50) */
+
+/*
+ * Main loop. Select from pty and network, and
+ * hand data to telnet receiver finite state machine.
+ */
+ void
+#ifndef convex
+telnet(f, p)
+#else
+telnet(f, p, host)
+#endif
+ int f, p;
+#ifdef convex
+ char *host;
+#endif
+{
+ int on = 1;
+#define TABBUFSIZ 512
+ char defent[TABBUFSIZ];
+ char defstrs[TABBUFSIZ];
+#undef TABBUFSIZ
+ char *HE;
+ char *HN;
+ char *IM;
+ void netflush();
+ int nfd;
+
+ /*
+ * Initialize the slc mapping table.
+ */
+ get_slc_defaults();
+
+ /*
+ * Do some tests where it is desireable to wait for a response.
+ * Rather than doing them slowly, one at a time, do them all
+ * at once.
+ */
+ if (my_state_is_wont(TELOPT_SGA))
+ send_will(TELOPT_SGA, 1);
+ /*
+ * Is the client side a 4.2 (NOT 4.3) system? We need to know this
+ * because 4.2 clients are unable to deal with TCP urgent data.
+ *
+ * To find out, we send out a "DO ECHO". If the remote system
+ * answers "WILL ECHO" it is probably a 4.2 client, and we note
+ * that fact ("WILL ECHO" ==> that the client will echo what
+ * WE, the server, sends it; it does NOT mean that the client will
+ * echo the terminal input).
+ */
+ send_do(TELOPT_ECHO, 1);
+
+#ifdef LINEMODE
+ if (his_state_is_wont(TELOPT_LINEMODE)) {
+ /* Query the peer for linemode support by trying to negotiate
+ * the linemode option.
+ */
+ linemode = 0;
+ editmode = 0;
+ send_do(TELOPT_LINEMODE, 1); /* send do linemode */
+ }
+#endif /* LINEMODE */
+
+ /*
+ * Send along a couple of other options that we wish to negotiate.
+ */
+ send_do(TELOPT_NAWS, 1);
+ send_will(TELOPT_STATUS, 1);
+ flowmode = 1; /* default flow control state */
+ restartany = -1; /* uninitialized... */
+ send_do(TELOPT_LFLOW, 1);
+
+ /*
+ * Spin, waiting for a response from the DO ECHO. However,
+ * some REALLY DUMB telnets out there might not respond
+ * to the DO ECHO. So, we spin looking for NAWS, (most dumb
+ * telnets so far seem to respond with WONT for a DO that
+ * they don't understand...) because by the time we get the
+ * response, it will already have processed the DO ECHO.
+ * Kludge upon kludge.
+ */
+ while (his_will_wont_is_changing(TELOPT_NAWS))
+ ttloop();
+
+ /*
+ * But...
+ * The client might have sent a WILL NAWS as part of its
+ * startup code; if so, we'll be here before we get the
+ * response to the DO ECHO. We'll make the assumption
+ * that any implementation that understands about NAWS
+ * is a modern enough implementation that it will respond
+ * to our DO ECHO request; hence we'll do another spin
+ * waiting for the ECHO option to settle down, which is
+ * what we wanted to do in the first place...
+ */
+ if (his_want_state_is_will(TELOPT_ECHO) &&
+ his_state_is_will(TELOPT_NAWS)) {
+ while (his_will_wont_is_changing(TELOPT_ECHO))
+ ttloop();
+ }
+ /*
+ * On the off chance that the telnet client is broken and does not
+ * respond to the DO ECHO we sent, (after all, we did send the
+ * DO NAWS negotiation after the DO ECHO, and we won't get here
+ * until a response to the DO NAWS comes back) simulate the
+ * receipt of a will echo. This will also send a WONT ECHO
+ * to the client, since we assume that the client failed to
+ * respond because it believes that it is already in DO ECHO
+ * mode, which we do not want.
+ */
+ if (his_want_state_is_will(TELOPT_ECHO)) {
+ DIAG(TD_OPTIONS,
+ {sprintf(nfrontp, "td: simulating recv\r\n");
+ nfrontp += strlen(nfrontp);});
+ willoption(TELOPT_ECHO);
+ }
+
+ /*
+ * Finally, to clean things up, we turn on our echo. This
+ * will break stupid 4.2 telnets out of local terminal echo.
+ */
+
+ if (my_state_is_wont(TELOPT_ECHO))
+ send_will(TELOPT_ECHO, 1);
+
+#ifndef STREAMSPTY
+ /*
+ * Turn on packet mode
+ */
+ (void) ioctl(p, TIOCPKT, (char *)&on);
+#endif
+
+#if defined(LINEMODE) && defined(KLUDGELINEMODE)
+ /*
+ * Continuing line mode support. If client does not support
+ * real linemode, attempt to negotiate kludge linemode by sending
+ * the do timing mark sequence.
+ */
+ if (lmodetype < REAL_LINEMODE)
+ send_do(TELOPT_TM, 1);
+#endif /* defined(LINEMODE) && defined(KLUDGELINEMODE) */
+
+ /*
+ * Call telrcv() once to pick up anything received during
+ * terminal type negotiation, 4.2/4.3 determination, and
+ * linemode negotiation.
+ */
+ telrcv();
+
+ (void) ioctl(f, FIONBIO, (char *)&on);
+ (void) ioctl(p, FIONBIO, (char *)&on);
+#if defined(CRAY2) && defined(UNICOS5)
+ init_termdriver(f, p, interrupt, sendbrk);
+#endif
+
+#if defined(SO_OOBINLINE)
+ (void) setsockopt(net, SOL_SOCKET, SO_OOBINLINE,
+ (char *)&on, sizeof on);
+#endif /* defined(SO_OOBINLINE) */
+
+#ifdef SIGTSTP
+ (void) signal(SIGTSTP, SIG_IGN);
+#endif
+#ifdef SIGTTOU
+ /*
+ * Ignoring SIGTTOU keeps the kernel from blocking us
+ * in ttioct() in /sys/tty.c.
+ */
+ (void) signal(SIGTTOU, SIG_IGN);
+#endif
+
+ (void) signal(SIGCHLD, cleanup);
+
+#if defined(CRAY2) && defined(UNICOS5)
+ /*
+ * Cray-2 will send a signal when pty modes are changed by slave
+ * side. Set up signal handler now.
+ */
+ if ((int)signal(SIGUSR1, termstat) < 0)
+ perror("signal");
+ else if (ioctl(p, TCSIGME, (char *)SIGUSR1) < 0)
+ perror("ioctl:TCSIGME");
+ /*
+ * Make processing loop check terminal characteristics early on.
+ */
+ termstat();
+#endif
+
+#ifdef TIOCNOTTY
+ {
+ register int t;
+ t = open(_PATH_TTY, O_RDWR);
+ if (t >= 0) {
+ (void) ioctl(t, TIOCNOTTY, (char *)0);
+ (void) close(t);
+ }
+ }
+#endif
+
+#if defined(CRAY) && defined(NEWINIT) && defined(TIOCSCTTY)
+ (void) setsid();
+ ioctl(p, TIOCSCTTY, 0);
+#endif
+
+ /*
+ * Show banner that getty never gave.
+ *
+ * We put the banner in the pty input buffer. This way, it
+ * gets carriage return null processing, etc., just like all
+ * other pty --> client data.
+ */
+
+#if !defined(CRAY) || !defined(NEWINIT)
+ if (getenv("USER"))
+ hostinfo = 0;
+#endif
+
+ if (getent(defent, "default") == 1) {
+ char *getstr();
+ char *cp=defstrs;
+
+ HE = getstr("he", &cp);
+ HN = getstr("hn", &cp);
+ IM = getstr("im", &cp);
+ if (HN && *HN)
+ (void) strcpy(host_name, HN);
+ if (IM == 0)
+ IM = "";
+ } else {
+ IM = DEFAULT_IM;
+ HE = 0;
+ }
+ edithost(HE, host_name);
+ if (hostinfo && *IM)
+ putf(IM, ptyibuf2);
+
+ if (pcc)
+ (void) strncat(ptyibuf2, ptyip, pcc+1);
+ ptyip = ptyibuf2;
+ pcc = strlen(ptyip);
+#ifdef LINEMODE
+ /*
+ * Last check to make sure all our states are correct.
+ */
+ init_termbuf();
+ localstat();
+#endif /* LINEMODE */
+
+ DIAG(TD_REPORT,
+ {sprintf(nfrontp, "td: Entering processing loop\r\n");
+ nfrontp += strlen(nfrontp);});
+
+#ifdef convex
+ startslave(host);
+#endif
+
+ nfd = ((f > p) ? f : p) + 1;
+ for (;;) {
+ fd_set ibits, obits, xbits;
+ register int c;
+
+ if (ncc < 0 && pcc < 0)
+ break;
+
+#if defined(CRAY2) && defined(UNICOS5)
+ if (needtermstat)
+ _termstat();
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+ FD_ZERO(&ibits);
+ FD_ZERO(&obits);
+ FD_ZERO(&xbits);
+ /*
+ * Never look for input if there's still
+ * stuff in the corresponding output buffer
+ */
+ if (nfrontp - nbackp || pcc > 0) {
+ FD_SET(f, &obits);
+ } else {
+ FD_SET(p, &ibits);
+ }
+ if (pfrontp - pbackp || ncc > 0) {
+ FD_SET(p, &obits);
+ } else {
+ FD_SET(f, &ibits);
+ }
+ if (!SYNCHing) {
+ FD_SET(f, &xbits);
+ }
+ if ((c = select(nfd, &ibits, &obits, &xbits,
+ (struct timeval *)0)) < 1) {
+ if (c == -1) {
+ if (errno == EINTR) {
+ continue;
+ }
+ }
+ sleep(5);
+ continue;
+ }
+
+ /*
+ * Any urgent data?
+ */
+ if (FD_ISSET(net, &xbits)) {
+ SYNCHing = 1;
+ }
+
+ /*
+ * Something to read from the network...
+ */
+ if (FD_ISSET(net, &ibits)) {
+#if !defined(SO_OOBINLINE)
+ /*
+ * In 4.2 (and 4.3 beta) systems, the
+ * OOB indication and data handling in the kernel
+ * is such that if two separate TCP Urgent requests
+ * come in, one byte of TCP data will be overlaid.
+ * This is fatal for Telnet, but we try to live
+ * with it.
+ *
+ * In addition, in 4.2 (and...), a special protocol
+ * is needed to pick up the TCP Urgent data in
+ * the correct sequence.
+ *
+ * What we do is: if we think we are in urgent
+ * mode, we look to see if we are "at the mark".
+ * If we are, we do an OOB receive. If we run
+ * this twice, we will do the OOB receive twice,
+ * but the second will fail, since the second
+ * time we were "at the mark", but there wasn't
+ * any data there (the kernel doesn't reset
+ * "at the mark" until we do a normal read).
+ * Once we've read the OOB data, we go ahead
+ * and do normal reads.
+ *
+ * There is also another problem, which is that
+ * since the OOB byte we read doesn't put us
+ * out of OOB state, and since that byte is most
+ * likely the TELNET DM (data mark), we would
+ * stay in the TELNET SYNCH (SYNCHing) state.
+ * So, clocks to the rescue. If we've "just"
+ * received a DM, then we test for the
+ * presence of OOB data when the receive OOB
+ * fails (and AFTER we did the normal mode read
+ * to clear "at the mark").
+ */
+ if (SYNCHing) {
+ int atmark;
+
+ (void) ioctl(net, SIOCATMARK, (char *)&atmark);
+ if (atmark) {
+ ncc = recv(net, netibuf, sizeof (netibuf), MSG_OOB);
+ if ((ncc == -1) && (errno == EINVAL)) {
+ ncc = read(net, netibuf, sizeof (netibuf));
+ if (sequenceIs(didnetreceive, gotDM)) {
+ SYNCHing = stilloob(net);
+ }
+ }
+ } else {
+ ncc = read(net, netibuf, sizeof (netibuf));
+ }
+ } else {
+ ncc = read(net, netibuf, sizeof (netibuf));
+ }
+ settimer(didnetreceive);
+#else /* !defined(SO_OOBINLINE)) */
+ ncc = read(net, netibuf, sizeof (netibuf));
+#endif /* !defined(SO_OOBINLINE)) */
+ if (ncc < 0 && errno == EWOULDBLOCK)
+ ncc = 0;
+ else {
+ if (ncc <= 0) {
+ break;
+ }
+ netip = netibuf;
+ }
+ DIAG((TD_REPORT | TD_NETDATA),
+ {sprintf(nfrontp, "td: netread %d chars\r\n", ncc);
+ nfrontp += strlen(nfrontp);});
+ DIAG(TD_NETDATA, printdata("nd", netip, ncc));
+ }
+
+ /*
+ * Something to read from the pty...
+ */
+ if (FD_ISSET(p, &ibits)) {
+#ifndef STREAMSPTY
+ pcc = read(p, ptyibuf, BUFSIZ);
+#else
+ pcc = readstream(p, ptyibuf, BUFSIZ);
+#endif
+ /*
+ * On some systems, if we try to read something
+ * off the master side before the slave side is
+ * opened, we get EIO.
+ */
+ if (pcc < 0 && (errno == EWOULDBLOCK ||
+#ifdef EAGAIN
+ errno == EAGAIN ||
+#endif
+ errno == EIO)) {
+ pcc = 0;
+ } else {
+ if (pcc <= 0)
+ break;
+#if !defined(CRAY2) || !defined(UNICOS5)
+#ifdef LINEMODE
+ /*
+ * If ioctl from pty, pass it through net
+ */
+ if (ptyibuf[0] & TIOCPKT_IOCTL) {
+ copy_termbuf(ptyibuf+1, pcc-1);
+ localstat();
+ pcc = 1;
+ }
+#endif /* LINEMODE */
+ if (ptyibuf[0] & TIOCPKT_FLUSHWRITE) {
+ netclear(); /* clear buffer back */
+#ifndef NO_URGENT
+ /*
+ * There are client telnets on some
+ * operating systems get screwed up
+ * royally if we send them urgent
+ * mode data.
+ */
+ *nfrontp++ = IAC;
+ *nfrontp++ = DM;
+ neturg = nfrontp-1; /* off by one XXX */
+ DIAG(TD_OPTIONS,
+ printoption("td: send IAC", DM));
+
+#endif
+ }
+ if (his_state_is_will(TELOPT_LFLOW) &&
+ (ptyibuf[0] &
+ (TIOCPKT_NOSTOP|TIOCPKT_DOSTOP))) {
+ int newflow =
+ ptyibuf[0] & TIOCPKT_DOSTOP ? 1 : 0;
+ if (newflow != flowmode) {
+ flowmode = newflow;
+ (void) sprintf(nfrontp,
+ "%c%c%c%c%c%c",
+ IAC, SB, TELOPT_LFLOW,
+ flowmode ? LFLOW_ON
+ : LFLOW_OFF,
+ IAC, SE);
+ nfrontp += 6;
+ DIAG(TD_OPTIONS, printsub('>',
+ (unsigned char *)nfrontp-4,
+ 4););
+ }
+ }
+ pcc--;
+ ptyip = ptyibuf+1;
+#else /* defined(CRAY2) && defined(UNICOS5) */
+ if (!uselinemode) {
+ unpcc = pcc;
+ unptyip = ptyibuf;
+ pcc = term_output(&unptyip, ptyibuf2,
+ &unpcc, BUFSIZ);
+ ptyip = ptyibuf2;
+ } else
+ ptyip = ptyibuf;
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+ }
+ }
+
+ while (pcc > 0) {
+ if ((&netobuf[BUFSIZ] - nfrontp) < 2)
+ break;
+ c = *ptyip++ & 0377, pcc--;
+ if (c == IAC)
+ *nfrontp++ = c;
+#if defined(CRAY2) && defined(UNICOS5)
+ else if (c == '\n' &&
+ my_state_is_wont(TELOPT_BINARY) && newmap)
+ *nfrontp++ = '\r';
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+ *nfrontp++ = c;
+ if ((c == '\r') && (my_state_is_wont(TELOPT_BINARY))) {
+ if (pcc > 0 && ((*ptyip & 0377) == '\n')) {
+ *nfrontp++ = *ptyip++ & 0377;
+ pcc--;
+ } else
+ *nfrontp++ = '\0';
+ }
+ }
+#if defined(CRAY2) && defined(UNICOS5)
+ /*
+ * If chars were left over from the terminal driver,
+ * note their existence.
+ */
+ if (!uselinemode && unpcc) {
+ pcc = unpcc;
+ unpcc = 0;
+ ptyip = unptyip;
+ }
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+
+ if (FD_ISSET(f, &obits) && (nfrontp - nbackp) > 0)
+ netflush();
+ if (ncc > 0)
+ telrcv();
+ if (FD_ISSET(p, &obits) && (pfrontp - pbackp) > 0)
+ ptyflush();
+ }
+ cleanup(0);
+} /* end of telnet */
+
+#ifndef TCSIG
+# ifdef TIOCSIG
+# define TCSIG TIOCSIG
+# endif
+#endif
+
+#ifdef STREAMSPTY
+
+int flowison = -1; /* current state of flow: -1 is unknown */
+
+int readstream(p, ibuf, bufsize)
+ int p;
+ char *ibuf;
+ int bufsize;
+{
+ int flags = 0;
+ int ret = 0;
+ struct termios *tsp;
+ struct termio *tp;
+ struct iocblk *ip;
+ char vstop, vstart;
+ int ixon;
+ int newflow;
+
+ strbufc.maxlen = BUFSIZ;
+ strbufc.buf = (char *)ctlbuf;
+ strbufd.maxlen = bufsize-1;
+ strbufd.len = 0;
+ strbufd.buf = ibuf+1;
+ ibuf[0] = 0;
+
+ ret = getmsg(p, &strbufc, &strbufd, &flags);
+ if (ret < 0) /* error of some sort -- probably EAGAIN */
+ return(-1);
+
+ if (strbufc.len <= 0 || ctlbuf[0] == M_DATA) {
+ /* data message */
+ if (strbufd.len > 0) { /* real data */
+ return(strbufd.len + 1); /* count header char */
+ } else {
+ /* nothing there */
+ errno = EAGAIN;
+ return(-1);
+ }
+ }
+
+ /*
+ * It's a control message. Return 1, to look at the flag we set
+ */
+
+ switch (ctlbuf[0]) {
+ case M_FLUSH:
+ if (ibuf[1] & FLUSHW)
+ ibuf[0] = TIOCPKT_FLUSHWRITE;
+ return(1);
+
+ case M_IOCTL:
+ ip = (struct iocblk *) (ibuf+1);
+
+ switch (ip->ioc_cmd) {
+ case TCSETS:
+ case TCSETSW:
+ case TCSETSF:
+ tsp = (struct termios *)
+ (ibuf+1 + sizeof(struct iocblk));
+ vstop = tsp->c_cc[VSTOP];
+ vstart = tsp->c_cc[VSTART];
+ ixon = tsp->c_iflag & IXON;
+ break;
+ case TCSETA:
+ case TCSETAW:
+ case TCSETAF:
+ tp = (struct termio *) (ibuf+1 + sizeof(struct iocblk));
+ vstop = tp->c_cc[VSTOP];
+ vstart = tp->c_cc[VSTART];
+ ixon = tp->c_iflag & IXON;
+ break;
+ default:
+ errno = EAGAIN;
+ return(-1);
+ }
+
+ newflow = (ixon && (vstart == 021) && (vstop == 023)) ? 1 : 0;
+ if (newflow != flowison) { /* it's a change */
+ flowison = newflow;
+ ibuf[0] = newflow ? TIOCPKT_DOSTOP : TIOCPKT_NOSTOP;
+ return(1);
+ }
+ }
+
+ /* nothing worth doing anything about */
+ errno = EAGAIN;
+ return(-1);
+}
+#endif /* STREAMSPTY */
+
+/*
+ * Send interrupt to process on other side of pty.
+ * If it is in raw mode, just write NULL;
+ * otherwise, write intr char.
+ */
+ void
+interrupt()
+{
+ ptyflush(); /* half-hearted */
+
+#if defined(STREAMSPTY) && defined(TIOCSIGNAL)
+ /* Streams PTY style ioctl to post a signal */
+ {
+ int sig = SIGINT;
+ (void) ioctl(pty, TIOCSIGNAL, &sig);
+ (void) ioctl(pty, I_FLUSH, FLUSHR);
+ }
+#else
+#ifdef TCSIG
+ (void) ioctl(pty, TCSIG, (char *)SIGINT);
+#else /* TCSIG */
+ init_termbuf();
+ *pfrontp++ = slctab[SLC_IP].sptr ?
+ (unsigned char)*slctab[SLC_IP].sptr : '\177';
+#endif /* TCSIG */
+#endif
+}
+
+/*
+ * Send quit to process on other side of pty.
+ * If it is in raw mode, just write NULL;
+ * otherwise, write quit char.
+ */
+ void
+sendbrk()
+{
+ ptyflush(); /* half-hearted */
+#ifdef TCSIG
+ (void) ioctl(pty, TCSIG, (char *)SIGQUIT);
+#else /* TCSIG */
+ init_termbuf();
+ *pfrontp++ = slctab[SLC_ABORT].sptr ?
+ (unsigned char)*slctab[SLC_ABORT].sptr : '\034';
+#endif /* TCSIG */
+}
+
+ void
+sendsusp()
+{
+#ifdef SIGTSTP
+ ptyflush(); /* half-hearted */
+# ifdef TCSIG
+ (void) ioctl(pty, TCSIG, (char *)SIGTSTP);
+# else /* TCSIG */
+ *pfrontp++ = slctab[SLC_SUSP].sptr ?
+ (unsigned char)*slctab[SLC_SUSP].sptr : '\032';
+# endif /* TCSIG */
+#endif /* SIGTSTP */
+}
+
+/*
+ * When we get an AYT, if ^T is enabled, use that. Otherwise,
+ * just send back "[Yes]".
+ */
+ void
+recv_ayt()
+{
+#if defined(SIGINFO) && defined(TCSIG)
+ if (slctab[SLC_AYT].sptr && *slctab[SLC_AYT].sptr != _POSIX_VDISABLE) {
+ (void) ioctl(pty, TCSIG, (char *)SIGINFO);
+ return;
+ }
+#endif
+ (void) strcpy(nfrontp, "\r\n[Yes]\r\n");
+ nfrontp += 9;
+}
+
+ void
+doeof()
+{
+ init_termbuf();
+
+#if defined(LINEMODE) && defined(USE_TERMIO) && (VEOF == VMIN)
+ if (!tty_isediting()) {
+ extern char oldeofc;
+ *pfrontp++ = oldeofc;
+ return;
+ }
+#endif
+ *pfrontp++ = slctab[SLC_EOF].sptr ?
+ (unsigned char)*slctab[SLC_EOF].sptr : '\004';
+}
diff --git a/contrib/telnet/telnetd/telnetd.h b/contrib/telnet/telnetd/telnetd.h
new file mode 100644
index 0000000..234b973
--- /dev/null
+++ b/contrib/telnet/telnetd/telnetd.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)telnetd.h 8.1 (Berkeley) 6/4/93
+ */
+
+
+#include "defs.h"
+#include "ext.h"
+
+#ifdef DIAGNOSTICS
+#define DIAG(a,b) if (diagnostic & (a)) b
+#else
+#define DIAG(a,b)
+#endif
+
+/* other external variables */
+extern char **environ;
+extern int errno;
+
diff --git a/contrib/telnet/telnetd/termstat.c b/contrib/telnet/telnetd/termstat.c
new file mode 100644
index 0000000..ebc843a
--- /dev/null
+++ b/contrib/telnet/telnetd/termstat.c
@@ -0,0 +1,660 @@
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)termstat.c 8.2 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#include "telnetd.h"
+
+/*
+ * local variables
+ */
+int def_tspeed = -1, def_rspeed = -1;
+#ifdef TIOCSWINSZ
+int def_row = 0, def_col = 0;
+#endif
+#ifdef LINEMODE
+static int _terminit = 0;
+#endif /* LINEMODE */
+
+#if defined(CRAY2) && defined(UNICOS5)
+int newmap = 1; /* nonzero if \n maps to ^M^J */
+#endif
+
+#ifdef LINEMODE
+/*
+ * localstat
+ *
+ * This function handles all management of linemode.
+ *
+ * Linemode allows the client to do the local editing of data
+ * and send only complete lines to the server. Linemode state is
+ * based on the state of the pty driver. If the pty is set for
+ * external processing, then we can use linemode. Further, if we
+ * can use real linemode, then we can look at the edit control bits
+ * in the pty to determine what editing the client should do.
+ *
+ * Linemode support uses the following state flags to keep track of
+ * current and desired linemode state.
+ * alwayslinemode : true if -l was specified on the telnetd
+ * command line. It means to have linemode on as much as
+ * possible.
+ *
+ * lmodetype: signifies whether the client can
+ * handle real linemode, or if use of kludgeomatic linemode
+ * is preferred. It will be set to one of the following:
+ * REAL_LINEMODE : use linemode option
+ * NO_KLUDGE : don't initiate kludge linemode.
+ * KLUDGE_LINEMODE : use kludge linemode
+ * NO_LINEMODE : client is ignorant of linemode
+ *
+ * linemode, uselinemode : linemode is true if linemode
+ * is currently on, uselinemode is the state that we wish
+ * to be in. If another function wishes to turn linemode
+ * on or off, it sets or clears uselinemode.
+ *
+ * editmode, useeditmode : like linemode/uselinemode, but
+ * these contain the edit mode states (edit and trapsig).
+ *
+ * The state variables correspond to some of the state information
+ * in the pty.
+ * linemode:
+ * In real linemode, this corresponds to whether the pty
+ * expects external processing of incoming data.
+ * In kludge linemode, this more closely corresponds to the
+ * whether normal processing is on or not. (ICANON in
+ * system V, or COOKED mode in BSD.)
+ * If the -l option was specified (alwayslinemode), then
+ * an attempt is made to force external processing on at
+ * all times.
+ *
+ * The following heuristics are applied to determine linemode
+ * handling within the server.
+ * 1) Early on in starting up the server, an attempt is made
+ * to negotiate the linemode option. If this succeeds
+ * then lmodetype is set to REAL_LINEMODE and all linemode
+ * processing occurs in the context of the linemode option.
+ * 2) If the attempt to negotiate the linemode option failed,
+ * and the "-k" (don't initiate kludge linemode) isn't set,
+ * then we try to use kludge linemode. We test for this
+ * capability by sending "do Timing Mark". If a positive
+ * response comes back, then we assume that the client
+ * understands kludge linemode (ech!) and the
+ * lmodetype flag is set to KLUDGE_LINEMODE.
+ * 3) Otherwise, linemode is not supported at all and
+ * lmodetype remains set to NO_LINEMODE (which happens
+ * to be 0 for convenience).
+ * 4) At any time a command arrives that implies a higher
+ * state of linemode support in the client, we move to that
+ * linemode support.
+ *
+ * A short explanation of kludge linemode is in order here.
+ * 1) The heuristic to determine support for kludge linemode
+ * is to send a do timing mark. We assume that a client
+ * that supports timing marks also supports kludge linemode.
+ * A risky proposition at best.
+ * 2) Further negotiation of linemode is done by changing the
+ * the server's state regarding SGA. If server will SGA,
+ * then linemode is off, if server won't SGA, then linemode
+ * is on.
+ */
+ void
+localstat()
+{
+ void netflush();
+ int need_will_echo = 0;
+
+#if defined(CRAY2) && defined(UNICOS5)
+ /*
+ * Keep track of that ol' CR/NL mapping while we're in the
+ * neighborhood.
+ */
+ newmap = tty_isnewmap();
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+
+ /*
+ * Check for state of BINARY options.
+ */
+ if (tty_isbinaryin()) {
+ if (his_want_state_is_wont(TELOPT_BINARY))
+ send_do(TELOPT_BINARY, 1);
+ } else {
+ if (his_want_state_is_will(TELOPT_BINARY))
+ send_dont(TELOPT_BINARY, 1);
+ }
+
+ if (tty_isbinaryout()) {
+ if (my_want_state_is_wont(TELOPT_BINARY))
+ send_will(TELOPT_BINARY, 1);
+ } else {
+ if (my_want_state_is_will(TELOPT_BINARY))
+ send_wont(TELOPT_BINARY, 1);
+ }
+
+ /*
+ * Check for changes to flow control if client supports it.
+ */
+ flowstat();
+
+ /*
+ * Check linemode on/off state
+ */
+ uselinemode = tty_linemode();
+
+ /*
+ * If alwayslinemode is on, and pty is changing to turn it off, then
+ * force linemode back on.
+ */
+ if (alwayslinemode && linemode && !uselinemode) {
+ uselinemode = 1;
+ tty_setlinemode(uselinemode);
+ }
+
+#ifdef ENCRYPTION
+ /*
+ * If the terminal is not echoing, but editing is enabled,
+ * something like password input is going to happen, so
+ * if we the other side is not currently sending encrypted
+ * data, ask the other side to start encrypting.
+ */
+ if (his_state_is_will(TELOPT_ENCRYPT)) {
+ static int enc_passwd = 0;
+ if (uselinemode && !tty_isecho() && tty_isediting()
+ && (enc_passwd == 0) && !decrypt_input) {
+ encrypt_send_request_start();
+ enc_passwd = 1;
+ } else if (enc_passwd) {
+ encrypt_send_request_end();
+ enc_passwd = 0;
+ }
+ }
+#endif /* ENCRYPTION */
+
+ /*
+ * Do echo mode handling as soon as we know what the
+ * linemode is going to be.
+ * If the pty has echo turned off, then tell the client that
+ * the server will echo. If echo is on, then the server
+ * will echo if in character mode, but in linemode the
+ * client should do local echoing. The state machine will
+ * not send anything if it is unnecessary, so don't worry
+ * about that here.
+ *
+ * If we need to send the WILL ECHO (because echo is off),
+ * then delay that until after we have changed the MODE.
+ * This way, when the user is turning off both editing
+ * and echo, the client will get editing turned off first.
+ * This keeps the client from going into encryption mode
+ * and then right back out if it is doing auto-encryption
+ * when passwords are being typed.
+ */
+ if (uselinemode) {
+ if (tty_isecho())
+ send_wont(TELOPT_ECHO, 1);
+ else
+ need_will_echo = 1;
+#ifdef KLUDGELINEMODE
+ if (lmodetype == KLUDGE_OK)
+ lmodetype = KLUDGE_LINEMODE;
+#endif
+ }
+
+ /*
+ * If linemode is being turned off, send appropriate
+ * command and then we're all done.
+ */
+ if (!uselinemode && linemode) {
+# ifdef KLUDGELINEMODE
+ if (lmodetype == REAL_LINEMODE) {
+# endif /* KLUDGELINEMODE */
+ send_dont(TELOPT_LINEMODE, 1);
+# ifdef KLUDGELINEMODE
+ } else if (lmodetype == KLUDGE_LINEMODE)
+ send_will(TELOPT_SGA, 1);
+# endif /* KLUDGELINEMODE */
+ send_will(TELOPT_ECHO, 1);
+ linemode = uselinemode;
+ goto done;
+ }
+
+# ifdef KLUDGELINEMODE
+ /*
+ * If using real linemode check edit modes for possible later use.
+ * If we are in kludge linemode, do the SGA negotiation.
+ */
+ if (lmodetype == REAL_LINEMODE) {
+# endif /* KLUDGELINEMODE */
+ useeditmode = 0;
+ if (tty_isediting())
+ useeditmode |= MODE_EDIT;
+ if (tty_istrapsig())
+ useeditmode |= MODE_TRAPSIG;
+ if (tty_issofttab())
+ useeditmode |= MODE_SOFT_TAB;
+ if (tty_islitecho())
+ useeditmode |= MODE_LIT_ECHO;
+# ifdef KLUDGELINEMODE
+ } else if (lmodetype == KLUDGE_LINEMODE) {
+ if (tty_isediting() && uselinemode)
+ send_wont(TELOPT_SGA, 1);
+ else
+ send_will(TELOPT_SGA, 1);
+ }
+# endif /* KLUDGELINEMODE */
+
+ /*
+ * Negotiate linemode on if pty state has changed to turn it on.
+ * Send appropriate command and send along edit mode, then all done.
+ */
+ if (uselinemode && !linemode) {
+# ifdef KLUDGELINEMODE
+ if (lmodetype == KLUDGE_LINEMODE) {
+ send_wont(TELOPT_SGA, 1);
+ } else if (lmodetype == REAL_LINEMODE) {
+# endif /* KLUDGELINEMODE */
+ send_do(TELOPT_LINEMODE, 1);
+ /* send along edit modes */
+ (void) sprintf(nfrontp, "%c%c%c%c%c%c%c", IAC, SB,
+ TELOPT_LINEMODE, LM_MODE, useeditmode,
+ IAC, SE);
+ nfrontp += 7;
+ editmode = useeditmode;
+# ifdef KLUDGELINEMODE
+ }
+# endif /* KLUDGELINEMODE */
+ linemode = uselinemode;
+ goto done;
+ }
+
+# ifdef KLUDGELINEMODE
+ /*
+ * None of what follows is of any value if not using
+ * real linemode.
+ */
+ if (lmodetype < REAL_LINEMODE)
+ goto done;
+# endif /* KLUDGELINEMODE */
+
+ if (linemode && his_state_is_will(TELOPT_LINEMODE)) {
+ /*
+ * If edit mode changed, send edit mode.
+ */
+ if (useeditmode != editmode) {
+ /*
+ * Send along appropriate edit mode mask.
+ */
+ (void) sprintf(nfrontp, "%c%c%c%c%c%c%c", IAC, SB,
+ TELOPT_LINEMODE, LM_MODE, useeditmode,
+ IAC, SE);
+ nfrontp += 7;
+ editmode = useeditmode;
+ }
+
+
+ /*
+ * Check for changes to special characters in use.
+ */
+ start_slc(0);
+ check_slc();
+ (void) end_slc(0);
+ }
+
+done:
+ if (need_will_echo)
+ send_will(TELOPT_ECHO, 1);
+ /*
+ * Some things should be deferred until after the pty state has
+ * been set by the local process. Do those things that have been
+ * deferred now. This only happens once.
+ */
+ if (_terminit == 0) {
+ _terminit = 1;
+ defer_terminit();
+ }
+
+ netflush();
+ set_termbuf();
+ return;
+
+} /* end of localstat */
+#endif /* LINEMODE */
+
+/*
+ * flowstat
+ *
+ * Check for changes to flow control
+ */
+ void
+flowstat()
+{
+ if (his_state_is_will(TELOPT_LFLOW)) {
+ if (tty_flowmode() != flowmode) {
+ flowmode = tty_flowmode();
+ (void) sprintf(nfrontp, "%c%c%c%c%c%c",
+ IAC, SB, TELOPT_LFLOW,
+ flowmode ? LFLOW_ON : LFLOW_OFF,
+ IAC, SE);
+ nfrontp += 6;
+ }
+ if (tty_restartany() != restartany) {
+ restartany = tty_restartany();
+ (void) sprintf(nfrontp, "%c%c%c%c%c%c",
+ IAC, SB, TELOPT_LFLOW,
+ restartany ? LFLOW_RESTART_ANY
+ : LFLOW_RESTART_XON,
+ IAC, SE);
+ nfrontp += 6;
+ }
+ }
+}
+
+/*
+ * clientstat
+ *
+ * Process linemode related requests from the client.
+ * Client can request a change to only one of linemode, editmode or slc's
+ * at a time, and if using kludge linemode, then only linemode may be
+ * affected.
+ */
+ void
+clientstat(code, parm1, parm2)
+ register int code, parm1, parm2;
+{
+ void netflush();
+
+ /*
+ * Get a copy of terminal characteristics.
+ */
+ init_termbuf();
+
+ /*
+ * Process request from client. code tells what it is.
+ */
+ switch (code) {
+#ifdef LINEMODE
+ case TELOPT_LINEMODE:
+ /*
+ * Don't do anything unless client is asking us to change
+ * modes.
+ */
+ uselinemode = (parm1 == WILL);
+ if (uselinemode != linemode) {
+# ifdef KLUDGELINEMODE
+ /*
+ * If using kludge linemode, make sure that
+ * we can do what the client asks.
+ * We can not turn off linemode if alwayslinemode
+ * and the ICANON bit is set.
+ */
+ if (lmodetype == KLUDGE_LINEMODE) {
+ if (alwayslinemode && tty_isediting()) {
+ uselinemode = 1;
+ }
+ }
+
+ /*
+ * Quit now if we can't do it.
+ */
+ if (uselinemode == linemode)
+ return;
+
+ /*
+ * If using real linemode and linemode is being
+ * turned on, send along the edit mode mask.
+ */
+ if (lmodetype == REAL_LINEMODE && uselinemode)
+# else /* KLUDGELINEMODE */
+ if (uselinemode)
+# endif /* KLUDGELINEMODE */
+ {
+ useeditmode = 0;
+ if (tty_isediting())
+ useeditmode |= MODE_EDIT;
+ if (tty_istrapsig)
+ useeditmode |= MODE_TRAPSIG;
+ if (tty_issofttab())
+ useeditmode |= MODE_SOFT_TAB;
+ if (tty_islitecho())
+ useeditmode |= MODE_LIT_ECHO;
+ (void) sprintf(nfrontp, "%c%c%c%c%c%c%c", IAC,
+ SB, TELOPT_LINEMODE, LM_MODE,
+ useeditmode, IAC, SE);
+ nfrontp += 7;
+ editmode = useeditmode;
+ }
+
+
+ tty_setlinemode(uselinemode);
+
+ linemode = uselinemode;
+
+ if (!linemode)
+ send_will(TELOPT_ECHO, 1);
+ }
+ break;
+
+ case LM_MODE:
+ {
+ register int ack, changed;
+
+ /*
+ * Client has sent along a mode mask. If it agrees with
+ * what we are currently doing, ignore it; if not, it could
+ * be viewed as a request to change. Note that the server
+ * will change to the modes in an ack if it is different from
+ * what we currently have, but we will not ack the ack.
+ */
+ useeditmode &= MODE_MASK;
+ ack = (useeditmode & MODE_ACK);
+ useeditmode &= ~MODE_ACK;
+
+ if (changed = (useeditmode ^ editmode)) {
+ /*
+ * This check is for a timing problem. If the
+ * state of the tty has changed (due to the user
+ * application) we need to process that info
+ * before we write in the state contained in the
+ * ack!!! This gets out the new MODE request,
+ * and when the ack to that command comes back
+ * we'll set it and be in the right mode.
+ */
+ if (ack)
+ localstat();
+ if (changed & MODE_EDIT)
+ tty_setedit(useeditmode & MODE_EDIT);
+
+ if (changed & MODE_TRAPSIG)
+ tty_setsig(useeditmode & MODE_TRAPSIG);
+
+ if (changed & MODE_SOFT_TAB)
+ tty_setsofttab(useeditmode & MODE_SOFT_TAB);
+
+ if (changed & MODE_LIT_ECHO)
+ tty_setlitecho(useeditmode & MODE_LIT_ECHO);
+
+ set_termbuf();
+
+ if (!ack) {
+ (void) sprintf(nfrontp, "%c%c%c%c%c%c%c", IAC,
+ SB, TELOPT_LINEMODE, LM_MODE,
+ useeditmode|MODE_ACK,
+ IAC, SE);
+ nfrontp += 7;
+ }
+
+ editmode = useeditmode;
+ }
+
+ break;
+
+ } /* end of case LM_MODE */
+#endif /* LINEMODE */
+
+ case TELOPT_NAWS:
+#ifdef TIOCSWINSZ
+ {
+ struct winsize ws;
+
+ def_col = parm1;
+ def_row = parm2;
+#ifdef LINEMODE
+ /*
+ * Defer changing window size until after terminal is
+ * initialized.
+ */
+ if (terminit() == 0)
+ return;
+#endif /* LINEMODE */
+
+ /*
+ * Change window size as requested by client.
+ */
+
+ ws.ws_col = parm1;
+ ws.ws_row = parm2;
+ (void) ioctl(pty, TIOCSWINSZ, (char *)&ws);
+ }
+#endif /* TIOCSWINSZ */
+
+ break;
+
+ case TELOPT_TSPEED:
+ {
+ def_tspeed = parm1;
+ def_rspeed = parm2;
+#ifdef LINEMODE
+ /*
+ * Defer changing the terminal speed.
+ */
+ if (terminit() == 0)
+ return;
+#endif /* LINEMODE */
+ /*
+ * Change terminal speed as requested by client.
+ * We set the receive speed first, so that if we can't
+ * store seperate receive and transmit speeds, the transmit
+ * speed will take precedence.
+ */
+ tty_rspeed(parm2);
+ tty_tspeed(parm1);
+ set_termbuf();
+
+ break;
+
+ } /* end of case TELOPT_TSPEED */
+
+ default:
+ /* What? */
+ break;
+ } /* end of switch */
+
+#if defined(CRAY2) && defined(UNICOS5)
+ /*
+ * Just in case of the likely event that we changed the pty state.
+ */
+ rcv_ioctl();
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+
+ netflush();
+
+} /* end of clientstat */
+
+#if defined(CRAY2) && defined(UNICOS5)
+ void
+termstat()
+{
+ needtermstat = 1;
+}
+
+ void
+_termstat()
+{
+ needtermstat = 0;
+ init_termbuf();
+ localstat();
+ rcv_ioctl();
+}
+#endif /* defined(CRAY2) && defined(UNICOS5) */
+
+#ifdef LINEMODE
+/*
+ * defer_terminit
+ *
+ * Some things should not be done until after the login process has started
+ * and all the pty modes are set to what they are supposed to be. This
+ * function is called when the pty state has been processed for the first time.
+ * It calls other functions that do things that were deferred in each module.
+ */
+ void
+defer_terminit()
+{
+
+ /*
+ * local stuff that got deferred.
+ */
+ if (def_tspeed != -1) {
+ clientstat(TELOPT_TSPEED, def_tspeed, def_rspeed);
+ def_tspeed = def_rspeed = 0;
+ }
+
+#ifdef TIOCSWINSZ
+ if (def_col || def_row) {
+ struct winsize ws;
+
+ memset((char *)&ws, 0, sizeof(ws));
+ ws.ws_col = def_col;
+ ws.ws_row = def_row;
+ (void) ioctl(pty, TIOCSWINSZ, (char *)&ws);
+ }
+#endif
+
+ /*
+ * The only other module that currently defers anything.
+ */
+ deferslc();
+
+} /* end of defer_terminit */
+
+/*
+ * terminit
+ *
+ * Returns true if the pty state has been processed yet.
+ */
+ int
+terminit()
+{
+ return(_terminit);
+
+} /* end of terminit */
+#endif /* LINEMODE */
diff --git a/contrib/telnet/telnetd/utility.c b/contrib/telnet/telnetd/utility.c
new file mode 100644
index 0000000..9553d58
--- /dev/null
+++ b/contrib/telnet/telnetd/utility.c
@@ -0,0 +1,1192 @@
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)utility.c 8.4 (Berkeley) 5/30/95";
+#endif /* not lint */
+
+#define PRINTOPTIONS
+#include "telnetd.h"
+
+/*
+ * utility functions performing io related tasks
+ */
+
+/*
+ * ttloop
+ *
+ * A small subroutine to flush the network output buffer, get some data
+ * from the network, and pass it through the telnet state machine. We
+ * also flush the pty input buffer (by dropping its data) if it becomes
+ * too full.
+ */
+
+ void
+ttloop()
+{
+ void netflush();
+
+ DIAG(TD_REPORT, {sprintf(nfrontp, "td: ttloop\r\n");
+ nfrontp += strlen(nfrontp);});
+ if (nfrontp-nbackp) {
+ netflush();
+ }
+ ncc = read(net, netibuf, sizeof netibuf);
+ if (ncc < 0) {
+ syslog(LOG_INFO, "ttloop: read: %m\n");
+ exit(1);
+ } else if (ncc == 0) {
+ syslog(LOG_INFO, "ttloop: peer died: %m\n");
+ exit(1);
+ }
+ DIAG(TD_REPORT, {sprintf(nfrontp, "td: ttloop read %d chars\r\n", ncc);
+ nfrontp += strlen(nfrontp);});
+ netip = netibuf;
+ telrcv(); /* state machine */
+ if (ncc > 0) {
+ pfrontp = pbackp = ptyobuf;
+ telrcv();
+ }
+} /* end of ttloop */
+
+/*
+ * Check a descriptor to see if out of band data exists on it.
+ */
+ int
+stilloob(s)
+ int s; /* socket number */
+{
+ static struct timeval timeout = { 0 };
+ fd_set excepts;
+ int value;
+
+ do {
+ FD_ZERO(&excepts);
+ FD_SET(s, &excepts);
+ value = select(s+1, (fd_set *)0, (fd_set *)0, &excepts, &timeout);
+ } while ((value == -1) && (errno == EINTR));
+
+ if (value < 0) {
+ fatalperror(pty, "select");
+ }
+ if (FD_ISSET(s, &excepts)) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+ void
+ptyflush()
+{
+ int n;
+
+ if ((n = pfrontp - pbackp) > 0) {
+ DIAG((TD_REPORT | TD_PTYDATA),
+ { sprintf(nfrontp, "td: ptyflush %d chars\r\n", n);
+ nfrontp += strlen(nfrontp); });
+ DIAG(TD_PTYDATA, printdata("pd", pbackp, n));
+ n = write(pty, pbackp, n);
+ }
+ if (n < 0) {
+ if (errno == EWOULDBLOCK || errno == EINTR)
+ return;
+ cleanup(0);
+ }
+ pbackp += n;
+ if (pbackp == pfrontp)
+ pbackp = pfrontp = ptyobuf;
+}
+
+/*
+ * nextitem()
+ *
+ * Return the address of the next "item" in the TELNET data
+ * stream. This will be the address of the next character if
+ * the current address is a user data character, or it will
+ * be the address of the character following the TELNET command
+ * if the current address is a TELNET IAC ("I Am a Command")
+ * character.
+ */
+ char *
+nextitem(current)
+ char *current;
+{
+ if ((*current&0xff) != IAC) {
+ return current+1;
+ }
+ switch (*(current+1)&0xff) {
+ case DO:
+ case DONT:
+ case WILL:
+ case WONT:
+ return current+3;
+ case SB: /* loop forever looking for the SE */
+ {
+ register char *look = current+2;
+
+ for (;;) {
+ if ((*look++&0xff) == IAC) {
+ if ((*look++&0xff) == SE) {
+ return look;
+ }
+ }
+ }
+ }
+ default:
+ return current+2;
+ }
+} /* end of nextitem */
+
+
+/*
+ * netclear()
+ *
+ * We are about to do a TELNET SYNCH operation. Clear
+ * the path to the network.
+ *
+ * Things are a bit tricky since we may have sent the first
+ * byte or so of a previous TELNET command into the network.
+ * So, we have to scan the network buffer from the beginning
+ * until we are up to where we want to be.
+ *
+ * A side effect of what we do, just to keep things
+ * simple, is to clear the urgent data pointer. The principal
+ * caller should be setting the urgent data pointer AFTER calling
+ * us in any case.
+ */
+ void
+netclear()
+{
+ register char *thisitem, *next;
+ char *good;
+#define wewant(p) ((nfrontp > p) && ((*p&0xff) == IAC) && \
+ ((*(p+1)&0xff) != EC) && ((*(p+1)&0xff) != EL))
+
+#ifdef ENCRYPTION
+ thisitem = nclearto > netobuf ? nclearto : netobuf;
+#else /* ENCRYPTION */
+ thisitem = netobuf;
+#endif /* ENCRYPTION */
+
+ while ((next = nextitem(thisitem)) <= nbackp) {
+ thisitem = next;
+ }
+
+ /* Now, thisitem is first before/at boundary. */
+
+#ifdef ENCRYPTION
+ good = nclearto > netobuf ? nclearto : netobuf;
+#else /* ENCRYPTION */
+ good = netobuf; /* where the good bytes go */
+#endif /* ENCRYPTION */
+
+ while (nfrontp > thisitem) {
+ if (wewant(thisitem)) {
+ int length;
+
+ next = thisitem;
+ do {
+ next = nextitem(next);
+ } while (wewant(next) && (nfrontp > next));
+ length = next-thisitem;
+ memmove(good, thisitem, length);
+ good += length;
+ thisitem = next;
+ } else {
+ thisitem = nextitem(thisitem);
+ }
+ }
+
+ nbackp = netobuf;
+ nfrontp = good; /* next byte to be sent */
+ neturg = 0;
+} /* end of netclear */
+
+/*
+ * netflush
+ * Send as much data as possible to the network,
+ * handling requests for urgent data.
+ */
+ void
+netflush()
+{
+ int n;
+ extern int not42;
+
+ if ((n = nfrontp - nbackp) > 0) {
+ DIAG(TD_REPORT,
+ { sprintf(nfrontp, "td: netflush %d chars\r\n", n);
+ n += strlen(nfrontp); /* get count first */
+ nfrontp += strlen(nfrontp); /* then move pointer */
+ });
+#ifdef ENCRYPTION
+ if (encrypt_output) {
+ char *s = nclearto ? nclearto : nbackp;
+ if (nfrontp - s > 0) {
+ (*encrypt_output)((unsigned char *)s, nfrontp-s);
+ nclearto = nfrontp;
+ }
+ }
+#endif /* ENCRYPTION */
+ /*
+ * if no urgent data, or if the other side appears to be an
+ * old 4.2 client (and thus unable to survive TCP urgent data),
+ * write the entire buffer in non-OOB mode.
+ */
+ if ((neturg == 0) || (not42 == 0)) {
+ n = write(net, nbackp, n); /* normal write */
+ } else {
+ n = neturg - nbackp;
+ /*
+ * In 4.2 (and 4.3) systems, there is some question about
+ * what byte in a sendOOB operation is the "OOB" data.
+ * To make ourselves compatible, we only send ONE byte
+ * out of band, the one WE THINK should be OOB (though
+ * we really have more the TCP philosophy of urgent data
+ * rather than the Unix philosophy of OOB data).
+ */
+ if (n > 1) {
+ n = send(net, nbackp, n-1, 0); /* send URGENT all by itself */
+ } else {
+ n = send(net, nbackp, n, MSG_OOB); /* URGENT data */
+ }
+ }
+ }
+ if (n < 0) {
+ if (errno == EWOULDBLOCK || errno == EINTR)
+ return;
+ cleanup(0);
+ }
+ nbackp += n;
+#ifdef ENCRYPTION
+ if (nbackp > nclearto)
+ nclearto = 0;
+#endif /* ENCRYPTION */
+ if (nbackp >= neturg) {
+ neturg = 0;
+ }
+ if (nbackp == nfrontp) {
+ nbackp = nfrontp = netobuf;
+#ifdef ENCRYPTION
+ nclearto = 0;
+#endif /* ENCRYPTION */
+ }
+ return;
+} /* end of netflush */
+
+
+/*
+ * writenet
+ *
+ * Just a handy little function to write a bit of raw data to the net.
+ * It will force a transmit of the buffer if necessary
+ *
+ * arguments
+ * ptr - A pointer to a character string to write
+ * len - How many bytes to write
+ */
+ void
+writenet(ptr, len)
+ register unsigned char *ptr;
+ register int len;
+{
+ /* flush buffer if no room for new data) */
+ if ((&netobuf[BUFSIZ] - nfrontp) < len) {
+ /* if this fails, don't worry, buffer is a little big */
+ netflush();
+ }
+
+ memmove(nfrontp, ptr, len);
+ nfrontp += len;
+
+} /* end of writenet */
+
+
+/*
+ * miscellaneous functions doing a variety of little jobs follow ...
+ */
+
+
+ void
+fatal(f, msg)
+ int f;
+ char *msg;
+{
+ char buf[BUFSIZ];
+
+ (void) sprintf(buf, "telnetd: %s.\r\n", msg);
+#ifdef ENCRYPTION
+ if (encrypt_output) {
+ /*
+ * Better turn off encryption first....
+ * Hope it flushes...
+ */
+ encrypt_send_end();
+ netflush();
+ }
+#endif /* ENCRYPTION */
+ (void) write(f, buf, (int)strlen(buf));
+ sleep(1); /*XXX*/
+ exit(1);
+}
+
+ void
+fatalperror(f, msg)
+ int f;
+ char *msg;
+{
+ char buf[BUFSIZ], *strerror();
+
+ (void) sprintf(buf, "%s: %s", msg, strerror(errno));
+ fatal(f, buf);
+}
+
+char editedhost[32];
+
+ void
+edithost(pat, host)
+ register char *pat;
+ register char *host;
+{
+ register char *res = editedhost;
+ char *strncpy();
+
+ if (!pat)
+ pat = "";
+ while (*pat) {
+ switch (*pat) {
+
+ case '#':
+ if (*host)
+ host++;
+ break;
+
+ case '@':
+ if (*host)
+ *res++ = *host++;
+ break;
+
+ default:
+ *res++ = *pat;
+ break;
+ }
+ if (res == &editedhost[sizeof editedhost - 1]) {
+ *res = '\0';
+ return;
+ }
+ pat++;
+ }
+ if (*host)
+ (void) strncpy(res, host,
+ sizeof editedhost - (res - editedhost) -1);
+ else
+ *res = '\0';
+ editedhost[sizeof editedhost - 1] = '\0';
+}
+
+static char *putlocation;
+
+ void
+putstr(s)
+ register char *s;
+{
+
+ while (*s)
+ putchr(*s++);
+}
+
+ void
+putchr(cc)
+ int cc;
+{
+ *putlocation++ = cc;
+}
+
+/*
+ * This is split on two lines so that SCCS will not see the M
+ * between two % signs and expand it...
+ */
+static char fmtstr[] = { "%l:%M\
+%P on %A, %d %B %Y" };
+
+ void
+putf(cp, where)
+ register char *cp;
+ char *where;
+{
+ char *slash;
+ time_t t;
+ char db[100];
+#ifdef STREAMSPTY
+ extern char *strchr();
+#else
+ extern char *strrchr();
+#endif
+
+ putlocation = where;
+
+ while (*cp) {
+ if (*cp != '%') {
+ putchr(*cp++);
+ continue;
+ }
+ switch (*++cp) {
+
+ case 't':
+#ifdef STREAMSPTY
+ /* names are like /dev/pts/2 -- we want pts/2 */
+ slash = strchr(line+1, '/');
+#else
+ slash = strrchr(line, '/');
+#endif
+ if (slash == (char *) 0)
+ putstr(line);
+ else
+ putstr(&slash[1]);
+ break;
+
+ case 'h':
+ putstr(editedhost);
+ break;
+
+ case 'd':
+ (void)time(&t);
+ (void)strftime(db, sizeof(db), fmtstr, localtime(&t));
+ putstr(db);
+ break;
+
+ case '%':
+ putchr('%');
+ break;
+ }
+ cp++;
+ }
+}
+
+#ifdef DIAGNOSTICS
+/*
+ * Print telnet options and commands in plain text, if possible.
+ */
+ void
+printoption(fmt, option)
+ register char *fmt;
+ register int option;
+{
+ if (TELOPT_OK(option))
+ sprintf(nfrontp, "%s %s\r\n", fmt, TELOPT(option));
+ else if (TELCMD_OK(option))
+ sprintf(nfrontp, "%s %s\r\n", fmt, TELCMD(option));
+ else
+ sprintf(nfrontp, "%s %d\r\n", fmt, option);
+ nfrontp += strlen(nfrontp);
+ return;
+}
+
+ void
+printsub(direction, pointer, length)
+ char direction; /* '<' or '>' */
+ unsigned char *pointer; /* where suboption data sits */
+ int length; /* length of suboption data */
+{
+ register int i;
+ char buf[512];
+
+ if (!(diagnostic & TD_OPTIONS))
+ return;
+
+ if (direction) {
+ sprintf(nfrontp, "td: %s suboption ",
+ direction == '<' ? "recv" : "send");
+ nfrontp += strlen(nfrontp);
+ if (length >= 3) {
+ register int j;
+
+ i = pointer[length-2];
+ j = pointer[length-1];
+
+ if (i != IAC || j != SE) {
+ sprintf(nfrontp, "(terminated by ");
+ nfrontp += strlen(nfrontp);
+ if (TELOPT_OK(i))
+ sprintf(nfrontp, "%s ", TELOPT(i));
+ else if (TELCMD_OK(i))
+ sprintf(nfrontp, "%s ", TELCMD(i));
+ else
+ sprintf(nfrontp, "%d ", i);
+ nfrontp += strlen(nfrontp);
+ if (TELOPT_OK(j))
+ sprintf(nfrontp, "%s", TELOPT(j));
+ else if (TELCMD_OK(j))
+ sprintf(nfrontp, "%s", TELCMD(j));
+ else
+ sprintf(nfrontp, "%d", j);
+ nfrontp += strlen(nfrontp);
+ sprintf(nfrontp, ", not IAC SE!) ");
+ nfrontp += strlen(nfrontp);
+ }
+ }
+ length -= 2;
+ }
+ if (length < 1) {
+ sprintf(nfrontp, "(Empty suboption??\?)");
+ nfrontp += strlen(nfrontp);
+ return;
+ }
+ switch (pointer[0]) {
+ case TELOPT_TTYPE:
+ sprintf(nfrontp, "TERMINAL-TYPE ");
+ nfrontp += strlen(nfrontp);
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ sprintf(nfrontp, "IS \"%.*s\"", length-2, (char *)pointer+2);
+ break;
+ case TELQUAL_SEND:
+ sprintf(nfrontp, "SEND");
+ break;
+ default:
+ sprintf(nfrontp,
+ "- unknown qualifier %d (0x%x).",
+ pointer[1], pointer[1]);
+ }
+ nfrontp += strlen(nfrontp);
+ break;
+ case TELOPT_TSPEED:
+ sprintf(nfrontp, "TERMINAL-SPEED");
+ nfrontp += strlen(nfrontp);
+ if (length < 2) {
+ sprintf(nfrontp, " (empty suboption??\?)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ sprintf(nfrontp, " IS %.*s", length-2, (char *)pointer+2);
+ nfrontp += strlen(nfrontp);
+ break;
+ default:
+ if (pointer[1] == 1)
+ sprintf(nfrontp, " SEND");
+ else
+ sprintf(nfrontp, " %d (unknown)", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ for (i = 2; i < length; i++) {
+ sprintf(nfrontp, " ?%d?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ }
+ break;
+
+ case TELOPT_LFLOW:
+ sprintf(nfrontp, "TOGGLE-FLOW-CONTROL");
+ nfrontp += strlen(nfrontp);
+ if (length < 2) {
+ sprintf(nfrontp, " (empty suboption??\?)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ switch (pointer[1]) {
+ case LFLOW_OFF:
+ sprintf(nfrontp, " OFF"); break;
+ case LFLOW_ON:
+ sprintf(nfrontp, " ON"); break;
+ case LFLOW_RESTART_ANY:
+ sprintf(nfrontp, " RESTART-ANY"); break;
+ case LFLOW_RESTART_XON:
+ sprintf(nfrontp, " RESTART-XON"); break;
+ default:
+ sprintf(nfrontp, " %d (unknown)", pointer[1]);
+ }
+ nfrontp += strlen(nfrontp);
+ for (i = 2; i < length; i++) {
+ sprintf(nfrontp, " ?%d?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+
+ case TELOPT_NAWS:
+ sprintf(nfrontp, "NAWS");
+ nfrontp += strlen(nfrontp);
+ if (length < 2) {
+ sprintf(nfrontp, " (empty suboption??\?)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ if (length == 2) {
+ sprintf(nfrontp, " ?%d?", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ sprintf(nfrontp, " %d %d (%d)",
+ pointer[1], pointer[2],
+ (int)((((unsigned int)pointer[1])<<8)|((unsigned int)pointer[2])));
+ nfrontp += strlen(nfrontp);
+ if (length == 4) {
+ sprintf(nfrontp, " ?%d?", pointer[3]);
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ sprintf(nfrontp, " %d %d (%d)",
+ pointer[3], pointer[4],
+ (int)((((unsigned int)pointer[3])<<8)|((unsigned int)pointer[4])));
+ nfrontp += strlen(nfrontp);
+ for (i = 5; i < length; i++) {
+ sprintf(nfrontp, " ?%d?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+
+ case TELOPT_LINEMODE:
+ sprintf(nfrontp, "LINEMODE ");
+ nfrontp += strlen(nfrontp);
+ if (length < 2) {
+ sprintf(nfrontp, " (empty suboption??\?)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ switch (pointer[1]) {
+ case WILL:
+ sprintf(nfrontp, "WILL ");
+ goto common;
+ case WONT:
+ sprintf(nfrontp, "WONT ");
+ goto common;
+ case DO:
+ sprintf(nfrontp, "DO ");
+ goto common;
+ case DONT:
+ sprintf(nfrontp, "DONT ");
+ common:
+ nfrontp += strlen(nfrontp);
+ if (length < 3) {
+ sprintf(nfrontp, "(no option??\?)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ switch (pointer[2]) {
+ case LM_FORWARDMASK:
+ sprintf(nfrontp, "Forward Mask");
+ nfrontp += strlen(nfrontp);
+ for (i = 3; i < length; i++) {
+ sprintf(nfrontp, " %x", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ default:
+ sprintf(nfrontp, "%d (unknown)", pointer[2]);
+ nfrontp += strlen(nfrontp);
+ for (i = 3; i < length; i++) {
+ sprintf(nfrontp, " %d", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ }
+ break;
+
+ case LM_SLC:
+ sprintf(nfrontp, "SLC");
+ nfrontp += strlen(nfrontp);
+ for (i = 2; i < length - 2; i += 3) {
+ if (SLC_NAME_OK(pointer[i+SLC_FUNC]))
+ sprintf(nfrontp, " %s", SLC_NAME(pointer[i+SLC_FUNC]));
+ else
+ sprintf(nfrontp, " %d", pointer[i+SLC_FUNC]);
+ nfrontp += strlen(nfrontp);
+ switch (pointer[i+SLC_FLAGS]&SLC_LEVELBITS) {
+ case SLC_NOSUPPORT:
+ sprintf(nfrontp, " NOSUPPORT"); break;
+ case SLC_CANTCHANGE:
+ sprintf(nfrontp, " CANTCHANGE"); break;
+ case SLC_VARIABLE:
+ sprintf(nfrontp, " VARIABLE"); break;
+ case SLC_DEFAULT:
+ sprintf(nfrontp, " DEFAULT"); break;
+ }
+ nfrontp += strlen(nfrontp);
+ sprintf(nfrontp, "%s%s%s",
+ pointer[i+SLC_FLAGS]&SLC_ACK ? "|ACK" : "",
+ pointer[i+SLC_FLAGS]&SLC_FLUSHIN ? "|FLUSHIN" : "",
+ pointer[i+SLC_FLAGS]&SLC_FLUSHOUT ? "|FLUSHOUT" : "");
+ nfrontp += strlen(nfrontp);
+ if (pointer[i+SLC_FLAGS]& ~(SLC_ACK|SLC_FLUSHIN|
+ SLC_FLUSHOUT| SLC_LEVELBITS)) {
+ sprintf(nfrontp, "(0x%x)", pointer[i+SLC_FLAGS]);
+ nfrontp += strlen(nfrontp);
+ }
+ sprintf(nfrontp, " %d;", pointer[i+SLC_VALUE]);
+ nfrontp += strlen(nfrontp);
+ if ((pointer[i+SLC_VALUE] == IAC) &&
+ (pointer[i+SLC_VALUE+1] == IAC))
+ i++;
+ }
+ for (; i < length; i++) {
+ sprintf(nfrontp, " ?%d?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+
+ case LM_MODE:
+ sprintf(nfrontp, "MODE ");
+ nfrontp += strlen(nfrontp);
+ if (length < 3) {
+ sprintf(nfrontp, "(no mode??\?)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ {
+ char tbuf[32];
+ sprintf(tbuf, "%s%s%s%s%s",
+ pointer[2]&MODE_EDIT ? "|EDIT" : "",
+ pointer[2]&MODE_TRAPSIG ? "|TRAPSIG" : "",
+ pointer[2]&MODE_SOFT_TAB ? "|SOFT_TAB" : "",
+ pointer[2]&MODE_LIT_ECHO ? "|LIT_ECHO" : "",
+ pointer[2]&MODE_ACK ? "|ACK" : "");
+ sprintf(nfrontp, "%s", tbuf[1] ? &tbuf[1] : "0");
+ nfrontp += strlen(nfrontp);
+ }
+ if (pointer[2]&~(MODE_EDIT|MODE_TRAPSIG|MODE_ACK)) {
+ sprintf(nfrontp, " (0x%x)", pointer[2]);
+ nfrontp += strlen(nfrontp);
+ }
+ for (i = 3; i < length; i++) {
+ sprintf(nfrontp, " ?0x%x?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ default:
+ sprintf(nfrontp, "%d (unknown)", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ for (i = 2; i < length; i++) {
+ sprintf(nfrontp, " %d", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ }
+ break;
+
+ case TELOPT_STATUS: {
+ register char *cp;
+ register int j, k;
+
+ sprintf(nfrontp, "STATUS");
+ nfrontp += strlen(nfrontp);
+
+ switch (pointer[1]) {
+ default:
+ if (pointer[1] == TELQUAL_SEND)
+ sprintf(nfrontp, " SEND");
+ else
+ sprintf(nfrontp, " %d (unknown)", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ for (i = 2; i < length; i++) {
+ sprintf(nfrontp, " ?%d?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ case TELQUAL_IS:
+ sprintf(nfrontp, " IS\r\n");
+ nfrontp += strlen(nfrontp);
+
+ for (i = 2; i < length; i++) {
+ switch(pointer[i]) {
+ case DO: cp = "DO"; goto common2;
+ case DONT: cp = "DONT"; goto common2;
+ case WILL: cp = "WILL"; goto common2;
+ case WONT: cp = "WONT"; goto common2;
+ common2:
+ i++;
+ if (TELOPT_OK(pointer[i]))
+ sprintf(nfrontp, " %s %s", cp, TELOPT(pointer[i]));
+ else
+ sprintf(nfrontp, " %s %d", cp, pointer[i]);
+ nfrontp += strlen(nfrontp);
+
+ sprintf(nfrontp, "\r\n");
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case SB:
+ sprintf(nfrontp, " SB ");
+ nfrontp += strlen(nfrontp);
+ i++;
+ j = k = i;
+ while (j < length) {
+ if (pointer[j] == SE) {
+ if (j+1 == length)
+ break;
+ if (pointer[j+1] == SE)
+ j++;
+ else
+ break;
+ }
+ pointer[k++] = pointer[j++];
+ }
+ printsub(0, &pointer[i], k - i);
+ if (i < length) {
+ sprintf(nfrontp, " SE");
+ nfrontp += strlen(nfrontp);
+ i = j;
+ } else
+ i = j - 1;
+
+ sprintf(nfrontp, "\r\n");
+ nfrontp += strlen(nfrontp);
+
+ break;
+
+ default:
+ sprintf(nfrontp, " %d", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ }
+ break;
+ }
+ break;
+ }
+
+ case TELOPT_XDISPLOC:
+ sprintf(nfrontp, "X-DISPLAY-LOCATION ");
+ nfrontp += strlen(nfrontp);
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ sprintf(nfrontp, "IS \"%.*s\"", length-2, (char *)pointer+2);
+ break;
+ case TELQUAL_SEND:
+ sprintf(nfrontp, "SEND");
+ break;
+ default:
+ sprintf(nfrontp, "- unknown qualifier %d (0x%x).",
+ pointer[1], pointer[1]);
+ }
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case TELOPT_NEW_ENVIRON:
+ sprintf(nfrontp, "NEW-ENVIRON ");
+ goto env_common1;
+ case TELOPT_OLD_ENVIRON:
+ sprintf(nfrontp, "OLD-ENVIRON");
+ env_common1:
+ nfrontp += strlen(nfrontp);
+ switch (pointer[1]) {
+ case TELQUAL_IS:
+ sprintf(nfrontp, "IS ");
+ goto env_common;
+ case TELQUAL_SEND:
+ sprintf(nfrontp, "SEND ");
+ goto env_common;
+ case TELQUAL_INFO:
+ sprintf(nfrontp, "INFO ");
+ env_common:
+ nfrontp += strlen(nfrontp);
+ {
+ register int noquote = 2;
+ for (i = 2; i < length; i++ ) {
+ switch (pointer[i]) {
+ case NEW_ENV_VAR:
+ sprintf(nfrontp, "\" VAR " + noquote);
+ nfrontp += strlen(nfrontp);
+ noquote = 2;
+ break;
+
+ case NEW_ENV_VALUE:
+ sprintf(nfrontp, "\" VALUE " + noquote);
+ nfrontp += strlen(nfrontp);
+ noquote = 2;
+ break;
+
+ case ENV_ESC:
+ sprintf(nfrontp, "\" ESC " + noquote);
+ nfrontp += strlen(nfrontp);
+ noquote = 2;
+ break;
+
+ case ENV_USERVAR:
+ sprintf(nfrontp, "\" USERVAR " + noquote);
+ nfrontp += strlen(nfrontp);
+ noquote = 2;
+ break;
+
+ default:
+ def_case:
+ if (isprint(pointer[i]) && pointer[i] != '"') {
+ if (noquote) {
+ *nfrontp++ = '"';
+ noquote = 0;
+ }
+ *nfrontp++ = pointer[i];
+ } else {
+ sprintf(nfrontp, "\" %03o " + noquote,
+ pointer[i]);
+ nfrontp += strlen(nfrontp);
+ noquote = 2;
+ }
+ break;
+ }
+ }
+ if (!noquote)
+ *nfrontp++ = '"';
+ break;
+ }
+ }
+ break;
+
+#if defined(AUTHENTICATION)
+ case TELOPT_AUTHENTICATION:
+ sprintf(nfrontp, "AUTHENTICATION");
+ nfrontp += strlen(nfrontp);
+
+ if (length < 2) {
+ sprintf(nfrontp, " (empty suboption??\?)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ switch (pointer[1]) {
+ case TELQUAL_REPLY:
+ case TELQUAL_IS:
+ sprintf(nfrontp, " %s ", (pointer[1] == TELQUAL_IS) ?
+ "IS" : "REPLY");
+ nfrontp += strlen(nfrontp);
+ if (AUTHTYPE_NAME_OK(pointer[2]))
+ sprintf(nfrontp, "%s ", AUTHTYPE_NAME(pointer[2]));
+ else
+ sprintf(nfrontp, "%d ", pointer[2]);
+ nfrontp += strlen(nfrontp);
+ if (length < 3) {
+ sprintf(nfrontp, "(partial suboption??\?)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ sprintf(nfrontp, "%s|%s",
+ ((pointer[3] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ?
+ "CLIENT" : "SERVER",
+ ((pointer[3] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ?
+ "MUTUAL" : "ONE-WAY");
+ nfrontp += strlen(nfrontp);
+
+ auth_printsub(&pointer[1], length - 1, buf, sizeof(buf));
+ sprintf(nfrontp, "%s", buf);
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case TELQUAL_SEND:
+ i = 2;
+ sprintf(nfrontp, " SEND ");
+ nfrontp += strlen(nfrontp);
+ while (i < length) {
+ if (AUTHTYPE_NAME_OK(pointer[i]))
+ sprintf(nfrontp, "%s ", AUTHTYPE_NAME(pointer[i]));
+ else
+ sprintf(nfrontp, "%d ", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ if (++i >= length) {
+ sprintf(nfrontp, "(partial suboption??\?)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ sprintf(nfrontp, "%s|%s ",
+ ((pointer[i] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ?
+ "CLIENT" : "SERVER",
+ ((pointer[i] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ?
+ "MUTUAL" : "ONE-WAY");
+ nfrontp += strlen(nfrontp);
+ ++i;
+ }
+ break;
+
+ case TELQUAL_NAME:
+ i = 2;
+ sprintf(nfrontp, " NAME \"");
+ nfrontp += strlen(nfrontp);
+ while (i < length)
+ *nfrontp += pointer[i++];
+ *nfrontp += '"';
+ break;
+
+ default:
+ for (i = 2; i < length; i++) {
+ sprintf(nfrontp, " ?%d?", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ }
+ break;
+#endif
+
+#ifdef ENCRYPTION
+ case TELOPT_ENCRYPT:
+ sprintf(nfrontp, "ENCRYPT");
+ nfrontp += strlen(nfrontp);
+ if (length < 2) {
+ sprintf(nfrontp, " (empty suboption??\?)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ switch (pointer[1]) {
+ case ENCRYPT_START:
+ sprintf(nfrontp, " START");
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case ENCRYPT_END:
+ sprintf(nfrontp, " END");
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case ENCRYPT_REQSTART:
+ sprintf(nfrontp, " REQUEST-START");
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case ENCRYPT_REQEND:
+ sprintf(nfrontp, " REQUEST-END");
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case ENCRYPT_IS:
+ case ENCRYPT_REPLY:
+ sprintf(nfrontp, " %s ", (pointer[1] == ENCRYPT_IS) ?
+ "IS" : "REPLY");
+ nfrontp += strlen(nfrontp);
+ if (length < 3) {
+ sprintf(nfrontp, " (partial suboption??\?)");
+ nfrontp += strlen(nfrontp);
+ break;
+ }
+ if (ENCTYPE_NAME_OK(pointer[2]))
+ sprintf(nfrontp, "%s ", ENCTYPE_NAME(pointer[2]));
+ else
+ sprintf(nfrontp, " %d (unknown)", pointer[2]);
+ nfrontp += strlen(nfrontp);
+
+ encrypt_printsub(&pointer[1], length - 1, buf, sizeof(buf));
+ sprintf(nfrontp, "%s", buf);
+ nfrontp += strlen(nfrontp);
+ break;
+
+ case ENCRYPT_SUPPORT:
+ i = 2;
+ sprintf(nfrontp, " SUPPORT ");
+ nfrontp += strlen(nfrontp);
+ while (i < length) {
+ if (ENCTYPE_NAME_OK(pointer[i]))
+ sprintf(nfrontp, "%s ", ENCTYPE_NAME(pointer[i]));
+ else
+ sprintf(nfrontp, "%d ", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ i++;
+ }
+ break;
+
+ case ENCRYPT_ENC_KEYID:
+ sprintf(nfrontp, " ENC_KEYID", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ goto encommon;
+
+ case ENCRYPT_DEC_KEYID:
+ sprintf(nfrontp, " DEC_KEYID", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ goto encommon;
+
+ default:
+ sprintf(nfrontp, " %d (unknown)", pointer[1]);
+ nfrontp += strlen(nfrontp);
+ encommon:
+ for (i = 2; i < length; i++) {
+ sprintf(nfrontp, " %d", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ }
+ break;
+#endif /* ENCRYPTION */
+
+ default:
+ if (TELOPT_OK(pointer[0]))
+ sprintf(nfrontp, "%s (unknown)", TELOPT(pointer[0]));
+ else
+ sprintf(nfrontp, "%d (unknown)", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ for (i = 1; i < length; i++) {
+ sprintf(nfrontp, " %d", pointer[i]);
+ nfrontp += strlen(nfrontp);
+ }
+ break;
+ }
+ sprintf(nfrontp, "\r\n");
+ nfrontp += strlen(nfrontp);
+}
+
+/*
+ * Dump a data buffer in hex and ascii to the output data stream.
+ */
+ void
+printdata(tag, ptr, cnt)
+ register char *tag;
+ register char *ptr;
+ register int cnt;
+{
+ register int i;
+ char xbuf[30];
+
+ while (cnt) {
+ /* flush net output buffer if no room for new data) */
+ if ((&netobuf[BUFSIZ] - nfrontp) < 80) {
+ netflush();
+ }
+
+ /* add a line of output */
+ sprintf(nfrontp, "%s: ", tag);
+ nfrontp += strlen(nfrontp);
+ for (i = 0; i < 20 && cnt; i++) {
+ sprintf(nfrontp, "%02x", *ptr);
+ nfrontp += strlen(nfrontp);
+ if (isprint(*ptr)) {
+ xbuf[i] = *ptr;
+ } else {
+ xbuf[i] = '.';
+ }
+ if (i % 2) {
+ *nfrontp = ' ';
+ nfrontp++;
+ }
+ cnt--;
+ ptr++;
+ }
+ xbuf[i] = '\0';
+ sprintf(nfrontp, " %s\r\n", xbuf );
+ nfrontp += strlen(nfrontp);
+ }
+}
+#endif /* DIAGNOSTICS */
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