Very big makeover in the way telnet, telnetd and libtelnet are built.

Previously, there were two copies of telnet; a non-crypto version
that lived in the usual places, and a crypto version that lived in
crypto/telnet/. The latter was built in a broken manner somewhat akin
to other "contribified" sources. This meant that there were 4 telnets
competing with each other at build time - KerberosIV, Kerberos5,
plain-old-secure and base. KerberosIV is no longer in the running, but
the other three took it in turns to jump all over each other during a
"make buildworld".

As the crypto issue has been clarified, and crypto _calls_ are not
a problem, crypto/telnet has been repo-copied to contrib/telnet,
and with this commit, all telnets are now "contribified". The contrib
path was chosen to not destroy history in the repository, and differs
from other contrib/ entries in that it may be worked on as "normal"
BSD code. There is no dangerous crypto in these sources, only a
very weak system less strong than enigma(1).

Kerberos5 telnet and Secure telnet are now selected by using the usual
macros in /etc/make.conf, and the build process is unsurprising and
less treacherous.

13 files changed, 15 insertions, 7038 deletions

diff --git a/libexec/telnetd/Makefile b/libexec/telnetd/Makefile
index 031000d..96d11fe 100644
--- a/libexec/telnetd/Makefile
+++ b/libexec/telnetd/Makefile
@@ -3,6 +3,9 @@
 # Do not define -DKLUDGELINEMODE, as it does not interact well with many
 # telnet implementations.
 
+TELNETDIR=	${.CURDIR}/../../contrib/telnet
+.PATH:		${TELNETDIR}/telnetd
+
 PROG=		telnetd
 MAN=		telnetd.8
 
@@ -11,7 +14,7 @@ SRCS=		global.c slc.c state.c sys_term.c telnetd.c \
 
 CFLAGS+=	-DLINEMODE -DUSE_TERMIO -DDIAGNOSTICS -DOLD_ENVIRON \
 		-DENV_HACK \
-		-I${.CURDIR}/../../lib -DINET6
+		-I${TELNETDIR} -DINET6
 
 WARNS?=		2
 WFORMAT?=	0
@@ -25,13 +28,16 @@ LIBTELNET=	${.CURDIR}/../../lib/libtelnet/libtelnet.a
 DPADD=		${LIBUTIL} ${LIBTERMCAP} ${LIBTELNET}
 LDADD=		-lutil -ltermcap ${LIBTELNET}
 
-unifdef:
-	-cd ${.CURDIR} ; \
-	( for i in *.[ch] ; do \
-		unifdef -UAUTHENTICATION -UENCRYPTION \
-			${.CURDIR}/../../crypto/telnet/telnetd/$$i \
-				> ${.CURDIR}/$$i ; \
-		echo $$i ; \
-	done )
+.if !defined(NO_CRYPTO)
+SRCS+=		authenc.c
+CFLAGS+=	-DAUTHENTICATION -DENCRYPTION
+DPADD+=		${LIBMP} ${LIBCRYPTO} ${LIBCRYPT} ${LIBPAM}
+LDADD+=		-lmp -lcrypto -lcrypt ${MINUSLPAM}
+.if !defined(NO_KERBEROS)
+CFLAGS+=	-DKRB5 -DFORWARD -Dnet_write=telnet_net_write
+DPADD+=		${LIBKRB5} ${LIBASN1} ${LIBROKEN} ${LIBCOM_ERR}
+LDADD+=		-lkrb5 -lasn1 -lroken -lcom_err
+.endif
+.endif
 
 .include <bsd.prog.mk>
diff --git a/libexec/telnetd/defs.h b/libexec/telnetd/defs.h
deleted file mode 100644
index d727f36..0000000
--- a/libexec/telnetd/defs.h
+++ /dev/null
@@ -1,258 +0,0 @@
-/*
- * 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
- * $FreeBSD$
- */
-
-/*
- * Telnet server defines
- */
-#include <sys/types.h>
-#include <sys/param.h>
-
-#ifndef	BSD
-# define	BSD 43
-#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>
-#include <sys/wait.h>
-#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
-
-#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
-
-#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/libexec/telnetd/ext.h b/libexec/telnetd/ext.h
deleted file mode 100644
index 04aa4a3..0000000
--- a/libexec/telnetd/ext.h
+++ /dev/null
@@ -1,206 +0,0 @@
-/*
- * 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
- * $FreeBSD$
- */
-
-/*
- * 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 */
-extern int	lmodetype;	/* Client support for linemode */
-#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 */
-
-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], *nfrontp, *nbackp;
-extern char	*neturg;		/* one past last bye of urgent data */
-
-extern int	pcc, ncc;
-
-extern int	pty, net;
-extern char	line[16];
-extern int	SYNCHing;		/* we are in TELNET SYNCH mode */
-
-extern void
-	_termstat(void),
-	add_slc(char, char, cc_t),
-	check_slc(void),
-	change_slc(char, char, cc_t),
-	cleanup(int),
-	clientstat(int, int, int),
-	copy_termbuf(char *, size_t),
-	deferslc(void),
-	defer_terminit(void),
-	do_opt_slc(unsigned char *, int),
-	doeof(void),
-	dooption(int),
-	dontoption(int),
-	edithost(char *, char *),
-	fatal(int, const char *),
-	fatalperror(int, const char *),
-	get_slc_defaults(void),
-	init_env(void),
-	init_termbuf(void),
-	interrupt(void),
-	localstat(void),
-	flowstat(void),
-	netclear(void),
-	netflush(void),
-#ifdef DIAGNOSTICS
-	printoption(const char *, int),
-	printdata(const char *, char *, int),
-	printsub(char, unsigned char *, int),
-#endif
-	process_slc(unsigned char, unsigned char, cc_t),
-	ptyflush(void),
-	putchr(int),
-	putf(char *, char *),
-	recv_ayt(void),
-	send_do(int, int),
-	send_dont(int, int),
-	send_slc(void),
-	send_status(void),
-	send_will(int, int),
-	send_wont(int, int),
-	sendbrk(void),
-	sendsusp(void),
-	set_termbuf(void),
-	start_login(char *, int, char *),
-	start_slc(int),
-	start_slave(char *, int, char *),
-	suboption(void),
-	telrcv(void),
-	ttloop(void),
-	tty_binaryin(int),
-	tty_binaryout(int);
-
-extern int
-	end_slc(unsigned char **),
-	getnpty(void),
-#ifndef convex
-	getpty(int *),
-#endif
-	login_tty(int),
-	spcset(int, cc_t *, cc_t **),
-	stilloob(int),
-	terminit(void),
-	termstat(void),
-	tty_flowmode(void),
-	tty_restartany(void),
-	tty_isbinaryin(void),
-	tty_isbinaryout(void),
-	tty_iscrnl(void),
-	tty_isecho(void),
-	tty_isediting(void),
-	tty_islitecho(void),
-	tty_isnewmap(void),
-	tty_israw(void),
-	tty_issofttab(void),
-	tty_istrapsig(void),
-	tty_linemode(void);
-
-extern void
-	tty_rspeed(int),
-	tty_setecho(int),
-	tty_setedit(int),
-	tty_setlinemode(int),
-	tty_setlitecho(int),
-	tty_setsig(int),
-	tty_setsofttab(int),
-	tty_tspeed(int),
-	willoption(int),
-	wontoption(int);
-
-int	output_data(const char *, ...) __printflike(1, 2);
-void	output_datalen(const char *, int);
-void	startslave(char *, int, char *);
-
-
-
-/*
- * 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;
-
-#ifndef	DEFAULT_IM
-#   ifdef ultrix
-#    define DEFAULT_IM	"\r\n\r\nULTRIX (%h) (%t)\r\n\r\r\n\r"
-#   else
-#    ifdef __FreeBSD__
-#     define DEFAULT_IM  "\r\n\r\nFreeBSD (%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
diff --git a/libexec/telnetd/global.c b/libexec/telnetd/global.c
deleted file mode 100644
index 2ed82d0..0000000
--- a/libexec/telnetd/global.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * 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.
- */
-
-#if 0
-#ifndef lint
-static const char sccsid[] = "@(#)global.c	8.1 (Berkeley) 6/4/93";
-#endif /* not lint */
-#endif
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-/*
- * 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/libexec/telnetd/pathnames.h b/libexec/telnetd/pathnames.h
deleted file mode 100644
index ed8ee88..0000000
--- a/libexec/telnetd/pathnames.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * 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
- * $FreeBSD$
- */
-
-#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/libexec/telnetd/slc.c b/libexec/telnetd/slc.c
deleted file mode 100644
index ad03441..0000000
--- a/libexec/telnetd/slc.c
+++ /dev/null
@@ -1,484 +0,0 @@
-/*
- * 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.
- */
-
-#if 0
-#ifndef lint
-static const char sccsid[] = "@(#)slc.c	8.2 (Berkeley) 5/30/95";
-#endif
-#endif
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include "telnetd.h"
-
-#ifdef	LINEMODE
-/*
- * local variables
- */
-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(void)
-{
-	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.
- */
-static void
-default_slc(void)
-{
-	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(void)
-{
-	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(char func, char flag, 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(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(unsigned char **bufp)
-{
-	int len;
-
-	/*
-	 * 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;
-			output_datalen(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(unsigned char func, unsigned char flag, cc_t val)
-{
-	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(char func, char flag, cc_t val)
-{
-	int hislevel, mylevel;
-
-	hislevel = flag & SLC_LEVELBITS;
-	mylevel = slctab[(int)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[(int)func].current.flag = flag;
-		slctab[(int)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[(int)func].current.flag = SLC_NOSUPPORT;
-		} else {
-			slctab[(int)func].current.flag = slctab[(int)func].defset.flag;
-		}
-		slctab[(int)func].current.val = slctab[(int)func].defset.val;
-		add_slc(func, slctab[(int)func].current.flag,
-						slctab[(int)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[(int)func].sptr) {
-		/*
-		 * We can change this one.
-		 */
-		slctab[(int)func].current.val = val;
-		*(slctab[(int)func].sptr) = val;
-		slctab[(int)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[(int)func].current.flag = flag;
-			slctab[(int)func].current.val = val;
-			flag |= SLC_ACK;
-		} else if (hislevel == SLC_CANTCHANGE &&
-				    mylevel == SLC_CANTCHANGE) {
-			flag &= ~SLC_LEVELBITS;
-			flag |= SLC_NOSUPPORT;
-			slctab[(int)func].current.flag = flag;
-		} else {
-			flag &= ~SLC_LEVELBITS;
-			flag |= mylevel;
-			slctab[(int)func].current.flag = flag;
-			if (mylevel == SLC_CANTCHANGE) {
-				slctab[(int)func].current.val =
-					slctab[(int)func].defset.val;
-				val = slctab[(int)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(void)
-{
-	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(unsigned char *ptr, int len)
-{
-	unsigned char func, flag;
-	cc_t val;
-	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(void)
-{
-	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/libexec/telnetd/state.c b/libexec/telnetd/state.c
deleted file mode 100644
index 7b733e4..0000000
--- a/libexec/telnetd/state.c
+++ /dev/null
@@ -1,1512 +0,0 @@
-/*
- * 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.
- */
-
-#if 0
-#ifndef lint
-static const char sccsid[] = "@(#)state.c	8.5 (Berkeley) 5/30/95";
-#endif
-#endif
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <stdarg.h>
-#include "telnetd.h"
-
-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 " */
-
-static void doclientstat(void);
-
-void
-telrcv(void)
-{
-	int c;
-	static int state = TS_DATA;
-
-	while (ncc > 0) {
-		if ((&ptyobuf[BUFSIZ] - pfrontp) < 2)
-			break;
-		c = *netip++ & 0377, ncc--;
-		switch (state) {
-
-		case TS_CR:
-			state = TS_DATA;
-			/* Strip off \n or \0 after a \r */
-			if ((c == 0) || (c == '\n')) {
-				break;
-			}
-			/* FALLTHROUGH */
-
-		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	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
-				{
-					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 */
-				output_data("%c%c", IAC, 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, "panic state=%d", state);
-			printf("telnetd: panic state=%d\n", state);
-			exit(1);
-		}
-	}
-}  /* 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(int option, int 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]++;
-	}
-	output_data((const char *)doopt, option);
-
-	DIAG(TD_OPTIONS, printoption("td: send do", option));
-}
-
-void
-willoption(int option)
-{
-	int changeok = 0;
-	void (*func)(void) = 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 */
-
-
-
-		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 */
-
-
-		case TELOPT_LFLOW:
-			func = flowstat;
-			break;
-		}
-	    }
-	}
-	set_his_state_will(option);
-	if (func)
-		(*func)();
-}  /* end of willoption */
-
-void
-send_dont(int option, int 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]++;
-	}
-	output_data((const char *)dont, option);
-
-	DIAG(TD_OPTIONS, printoption("td: send dont", option));
-}
-
-void
-wontoption(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;
-			lmodetype = KLUDGE_LINEMODE;
-# 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;
-
-
-		/*
-		 * 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;
-
-		default:
-			break;
-		}
-	    }
-	}
-	set_his_state_wont(option);
-
-}  /* end of wontoption */
-
-void
-send_will(int option, int 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]++;
-	}
-	output_data((const char *)will, option);
-
-	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(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;
-
-		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(int option, int 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]++;
-	}
-	output_data((const char *)wont, option);
-
-	DIAG(TD_OPTIONS, printoption("td: send wont", option));
-}
-
-void
-dontoption(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(void)
-{
-    int subchar;
-
-    DIAG(TD_OPTIONS, {netflush(); printsub('<', subpointer, SB_LEN()+2);});
-
-    subchar = SB_GET();
-    switch (subchar) {
-    case TELOPT_TSPEED: {
-	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()) {
-	    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: {
-	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: {
-	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: {
-	int c;
-	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) {
-		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();
-				/* FALLTHROUGH */
-			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,
-			    output_data("ENVIRON VALUE and VAR are reversed!\r\n"));
-
-		}
-	    }
-	    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();
-			/* FALLTHROUGH */
-		default:
-			*cp++ = c;
-			break;
-		}
-	}
-	*cp = '\0';
-	if (valp)
-		(void)setenv(varp, valp, 1);
-	else
-		unsetenv(varp);
-	break;
-    }  /* end of case TELOPT_NEW_ENVIRON */
-
-    default:
-	break;
-    }  /* end of switch */
-
-}  /* end of suboption */
-
-static void
-doclientstat(void)
-{
-	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(void)
-{
-	unsigned char statusbuf[256];
-	unsigned char *ncp;
-	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 (i == IAC)
-				ADD(IAC);
-		}
-		if (his_want_state_is_will(i)) {
-			ADD(DO);
-			ADD_DATA(i);
-			if (i == IAC)
-				ADD(IAC);
-		}
-	}
-
-	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);
-
-	output_datalen(statusbuf, ncp - statusbuf);
-	netflush();	/* Send it on its way */
-
-	DIAG(TD_OPTIONS,
-		{printsub('>', statusbuf, ncp - statusbuf); netflush();});
-}
-
-/*
- * This function appends data to nfrontp and advances nfrontp.
- * Returns the number of characters written altogether (the
- * buffer may have been flushed in the process).
- */
-
-int
-output_data(const char *format, ...)
-{
-	va_list args;
-	int len;
-	char *buf;
-
-	va_start(args, format);
-	if ((len = vasprintf(&buf, format, args)) == -1)
-		return -1;
-	output_datalen(buf, len);
-	va_end(args);
-	free(buf);
-	return (len);
-}
-
-void
-output_datalen(const char *buf, int len)
-{
-	int remaining, copied;
-	
-	remaining = BUFSIZ - (nfrontp - netobuf);
-	while (len > 0) {
-		/* Free up enough space if the room is too low*/
-		if ((len > BUFSIZ ? BUFSIZ : len) > remaining) {
-			netflush();
-			remaining = BUFSIZ - (nfrontp - netobuf);
-		}
-
-		/* Copy out as much as will fit */
-		copied = remaining > len ? len : remaining;
-		memmove(nfrontp, buf, copied);
-		nfrontp += copied;
-		len -= copied;
-		remaining -= copied;
-		buf += copied;
-	}
-	return;
-}
diff --git a/libexec/telnetd/sys_term.c b/libexec/telnetd/sys_term.c
deleted file mode 100644
index e0525d6..0000000
--- a/libexec/telnetd/sys_term.c
+++ /dev/null
@@ -1,1192 +0,0 @@
- /*
- * 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.
- */
-
-#if 0
-#ifndef lint
-static const char sccsid[] = "@(#)sys_term.c	8.4+1 (Berkeley) 5/30/95";
-#endif
-#endif
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/types.h>
-#include <sys/tty.h>
-#include <libutil.h>
-#include <stdlib.h>
-#include <utmp.h>
-
-#include "telnetd.h"
-#include "pathnames.h"
-
-
-int cleanopen(char *);
-void scrub_env(void);
-
-struct	utmp wtmp;
-
-#ifdef _PATH_WTMP
-char    wtmpf[] = _PATH_WTMP;
-#else
-char	wtmpf[]	= "/var/log/wtmp";
-#endif
-#ifdef _PATH_UTMP
-char    utmpf[] = _PATH_UTMP;
-#else
-char	utmpf[] = "/var/run/utmp";
-#endif
-
-char	*envinit[3];
-extern char **environ;
-
-#define SCPYN(a, b)	(void) strncpy(a, b, sizeof(a))
-#define SCMPN(a, b)	strncmp(a, b, sizeof(a))
-
-#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
-
-#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 */
-# 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 */
-#endif	/* USE_TERMIO */
-
-#include <sys/types.h>
-#include <libutil.h>
-
-int cleanopen(char *);
-void scrub_env(void);
-static char **addarg(char **, const char *);
-
-/*
- * 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(void)
-{
-#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
-	(void) tcgetattr(pty, &termbuf);
-#endif
-	termbuf2 = termbuf;
-}
-
-#if	defined(LINEMODE) && defined(TIOCPKT_IOCTL)
-void
-copy_termbuf(char *cp, size_t len)
-{
-	if (len > sizeof(termbuf))
-		len = sizeof(termbuf);
-	memmove((char *)&termbuf, cp, len);
-	termbuf2 = termbuf;
-}
-#endif	/* defined(LINEMODE) && defined(TIOCPKT_IOCTL) */
-
-void
-set_termbuf(void)
-{
-	/*
-	 * 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)))
-		(void) tcsetattr(pty, TCSANOW, &termbuf);
-#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(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 */
-
-
-#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);
-
-int
-spcset(int func, cc_t *valp, cc_t **valpp)
-{
-	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 */
-
-/*
- * 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.
- */
-char alpha[] = "0123456789abcdefghijklmnopqrstuv";
-char line[16];
-
-int
-getpty(int *ptynum __unused)
-{
-	int p;
-	const char *cp;
-	char *p1, *p2;
-	int i;
-
-	(void) strcpy(line, _PATH_DEV);
-	(void) strcat(line, "ptyXX");
-	p1 = &line[8];
-	p2 = &line[9];
-
-	for (cp = "pqrsPQRS"; *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 < 32; i++) {
-			*p2 = alpha[i];
-			p = open(line, 2);
-			if (p > 0) {
-				line[5] = 't';
-				chown(line, 0, 0);
-				chmod(line, 0600);
-					return(p);
-			}
-		}
-	}
-	return(-1);
-}
-
-#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.
- */
-
-
-int
-tty_linemode(void)
-{
-#ifndef	USE_TERMIO
-	return(termbuf.state & TS_EXTPROC);
-#else
-	return(termbuf.c_lflag & EXTPROC);
-#endif
-}
-
-void
-tty_setlinemode(int on)
-{
-#ifdef	TIOCEXT
-	set_termbuf();
-	(void) ioctl(pty, TIOCEXT, (char *)&on);
-	init_termbuf();
-#else	/* !TIOCEXT */
-# ifdef	EXTPROC
-	if (on)
-		termbuf.c_lflag |= EXTPROC;
-	else
-		termbuf.c_lflag &= ~EXTPROC;
-# endif
-#endif	/* TIOCEXT */
-}
-#endif	/* LINEMODE */
-
-int
-tty_isecho(void)
-{
-#ifndef USE_TERMIO
-	return (termbuf.sg.sg_flags & ECHO);
-#else
-	return (termbuf.c_lflag & ECHO);
-#endif
-}
-
-int
-tty_flowmode(void)
-{
-#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(void)
-{
-#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(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(void)
-{
-#ifndef USE_TERMIO
-	return(termbuf.sg.sg_flags & RAW);
-#else
-	return(!(termbuf.c_lflag & ICANON));
-#endif
-}
-
-
-void
-tty_binaryin(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(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(void)
-{
-#ifndef	USE_TERMIO
-	return(termbuf.lflags & LPASS8);
-#else
-	return(!(termbuf.c_iflag & ISTRIP));
-#endif
-}
-
-int
-tty_isbinaryout(void)
-{
-#ifndef	USE_TERMIO
-	return(termbuf.lflags & LLITOUT);
-#else
-	return(!(termbuf.c_oflag&OPOST));
-#endif
-}
-
-#ifdef	LINEMODE
-int
-tty_isediting(void)
-{
-#ifndef USE_TERMIO
-	return(!(termbuf.sg.sg_flags & (CBREAK|RAW)));
-#else
-	return(termbuf.c_lflag & ICANON);
-#endif
-}
-
-int
-tty_istrapsig(void)
-{
-#ifndef USE_TERMIO
-	return(!(termbuf.sg.sg_flags&RAW));
-#else
-	return(termbuf.c_lflag & ISIG);
-#endif
-}
-
-void
-tty_setedit(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(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(void)
-{
-#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(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(void)
-{
-#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(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(void)
-{
-#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_BAUD */
-
-void
-tty_tspeed(int val)
-{
-#ifdef	DECODE_BAUD
-	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_BAUD */
-	cfsetospeed(&termbuf, val);
-#endif	/* DECODE_BAUD */
-}
-
-void
-tty_rspeed(int val)
-{
-#ifdef	DECODE_BAUD
-	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 */
-}
-
-/*
- * getptyslave()
- *
- * Open the slave side of the pty, and do any initialization
- * that is necessary.
- */
-static void
-getptyslave(void)
-{
-	int t = -1;
-	char erase;
-
-# 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
-	 *	erase character
-	 * so that we can re-set them if we need to.
-	 */
-# ifdef	LINEMODE
-	waslm = tty_linemode();
-# endif
-	erase = termbuf.c_cc[VERASE];
-
-	/*
-	 * 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
-
-	t = cleanopen(line);
-	if (t < 0)
-		fatalperror(net, line);
-
-
-	/*
-	 * 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 all other termios/termio based
-	 * systems, other than 4.4BSD.  In 4.4BSD the
-	 * kernel does the initial terminal setup.
-	 */
-	tty_rspeed((def_rspeed > 0) ? def_rspeed : 9600);
-	tty_tspeed((def_tspeed > 0) ? def_tspeed : 9600);
-	if (erase)
-		termbuf.c_cc[VERASE] = erase;
-# 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");
-	if (net > 2)
-		(void) close(net);
-}
-
-#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(char *li)
-{
-	int t;
-
-	/*
-	 * Make sure that other people can't open the
-	 * slave side of the connection.
-	 */
-	(void) chown(li, 0, 0);
-	(void) chmod(li, 0600);
-
-	(void) revoke(li);
-
-	t = open(line, O_RDWR|O_NOCTTY);
-
-	if (t < 0)
-		return(-1);
-
-	return(t);
-}
-
-/*
- * startslave(host)
- *
- * Given a hostname, do whatever
- * is necessary to startup the login process on the slave side of the pty.
- */
-
-/* ARGSUSED */
-void
-startslave(char *host, int autologin, char *autoname)
-{
-	int i;
-
-
-
-	if ((i = fork()) < 0)
-		fatalperror(net, "fork");
-	if (i) {
-	} else {
-		getptyslave();
-		start_login(host, autologin, autoname);
-		/*NOTREACHED*/
-	}
-}
-
-void
-init_env(void)
-{
-	char **envp;
-
-	envp = envinit;
-	if ((*envp = getenv("TZ")))
-		*envp++ -= 3;
-	*envp = 0;
-	environ = envinit;
-}
-
-
-/*
- * start_login(host)
- *
- * Assuming that we are now running as a child processes, this
- * function will turn us into the login process.
- */
-
-#define undef1 __unused
-
-void
-start_login(char *host undef1, int autologin undef1, char *name undef1)
-{
-	char **argv;
-
-	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)
-#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 (getenv("USER")) {
- 		argv = addarg(argv, "--");
-		argv = addarg(argv, getenv("USER"));
-#if	defined(LOGIN_ARGS) && defined(NO_LOGIN_P)
-		{
-			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");
-	}
-	closelog();
-
-	if (altlogin == NULL) {
-		altlogin = _PATH_LOGIN;
-	}
-	execv(altlogin, argv);
-
-	syslog(LOG_ERR, "%s: %m", altlogin);
-	fatalperror(net, altlogin);
-	/*NOTREACHED*/
-}
-
-static char **
-addarg(char **argv, const char *val)
-{
-	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[(long)argv[-1]]) {
-		--argv;
-		*argv = (char *)((long)(*argv) + 10);
-		argv = (char **)realloc(argv, sizeof(*argv)*((long)(*argv) + 2));
-		if (argv == NULL)
-			return(NULL);
-		argv++;
-		cpp = &argv[(long)argv[-1] - 10];
-	}
-	*cpp++ = strdup(val);
-	*cpp = 0;
-	return(argv);
-}
-
-/*
- * scrub_env()
- *
- * We only accept the environment variables listed below.
- */
-void
-scrub_env(void)
-{
-	static const char *rej[] = {
-		"TERMCAP=/",
-		NULL
-	};
-
-	static const char *acc[] = {
-		"XAUTH=", "XAUTHORITY=", "DISPLAY=",
-		"TERM=",
-		"EDITOR=",
-		"PAGER=",
-		"LOGNAME=",
-		"POSIXLY_CORRECT=",
-		"PRINTER=",
-		NULL
-	};
-
-	char **cpp, **cpp2;
-	const char **p;
- 
- 	for (cpp2 = cpp = environ; *cpp; cpp++) {
-		int reject_it = 0;
-
-		for(p = rej; *p; p++)
-			if(strncmp(*cpp, *p, strlen(*p)) == 0) {
-				reject_it = 1;
-				break;
-			}
-		if (reject_it)
-			continue;
-
-		for(p = acc; *p; p++)
-			if(strncmp(*cpp, *p, strlen(*p)) == 0)
-				break;
-		if(*p != NULL)
- 			*cpp2++ = *cpp;
- 	}
-	*cpp2 = NULL;
-}
-
-/*
- * 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(int sig __unused)
-{
-	char *p;
-	sigset_t mask;
-
-	p = line + sizeof(_PATH_DEV) - 1;
-	/*
-	 * Block all signals before clearing the utmp entry.  We don't want to
-	 * be called again after calling logout() and then not add the wtmp
-	 * entry because of not finding the corresponding entry in utmp.
-	 */
-	sigfillset(&mask);
-	sigprocmask(SIG_SETMASK, &mask, NULL);
-	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);
-}
diff --git a/libexec/telnetd/telnetd.8 b/libexec/telnetd/telnetd.8
deleted file mode 100644
index 306e15e..0000000
--- a/libexec/telnetd/telnetd.8
+++ /dev/null
@@ -1,593 +0,0 @@
-.\" 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
-.\" $FreeBSD$
-.\"
-.Dd January 27, 2000
-.Dt TELNETD 8
-.Os
-.Sh NAME
-.Nm telnetd
-.Nd DARPA
-.Tn TELNET
-protocol server
-.Sh SYNOPSIS
-.Nm /usr/libexec/telnetd
-.Op Fl BUhlkn
-.Op Fl D Ar debugmode
-.Op Fl S Ar tos
-.Op Fl X Ar authtype
-.Op Fl a Ar authmode
-.Op Fl edebug
-.Op Fl p Ar loginprog
-.Op Fl u Ar len
-.Op Fl debug Op Ar port
-.Sh DESCRIPTION
-The
-.Nm
-utility is a server which supports the
-.Tn DARPA
-standard
-.Tn TELNET
-virtual terminal protocol.
-The
-.Nm
-utility 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
-manually, instead of through
-.Xr inetd 8 .
-If started up this way,
-.Ar port
-may be specified to run
-.Nm
-on an alternate
-.Tn TCP
-port number.
-.Pp
-The
-.Nm
-utility accepts the following options:
-.Bl -tag -width indent
-.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
-has been compiled with support for the
-.Dv AUTHENTICATION
-option.
-There are several valid values for
-.Ar authmode :
-.Bl -tag -width debug
-.It Cm debug
-Turn on authentication debugging code.
-.It Cm 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 Cm 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 Cm 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 Cm 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 Cm off
-Disable the authentication code.
-All user verification will happen through the
-.Xr login 1
-program.
-.El
-.It Fl B
-Specify bftp server mode.  In this mode,
-.Nm
-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
-to print out debugging information
-to the connection, allowing the user to see what
-.Nm
-is doing.
-There are several possible values for
-.Ar debugmode :
-.Bl -tag -width exercise
-.It Cm options
-Print information about the negotiation of
-.Tn TELNET
-options.
-.It Cm report
-Print the
-.Cm options
-information, plus some additional information
-about what processing is going on.
-.It Cm netdata
-Display the data stream received by
-.Nm .
-.It Cm ptydata
-Display data written to the pty.
-.It Cm exercise
-Has not been implemented yet.
-.El
-.It Fl debug
-Enable debugging on each socket created by
-.Nm
-(see
-.Dv SO_DEBUG
-in
-.Xr socket 2 ) .
-.It Fl edebug
-If
-.Nm
-has been compiled with support for data encryption, then the
-.Fl edebug
-option may be used to enable encryption debugging code.
-.It Fl h
-Disable the printing of host-specific information before
-login has been completed.
-.It Fl k
-This option is only useful if
-.Nm
-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
-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 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
-Specify line mode. Try 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
-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 p Ar loginprog
-Specify an alternate
-.Xr login 1
-command to run to complete the login.  The alternate command must
-understand the same command arguments as the standard login.
-.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.
-.It Fl U
-This option causes
-.Nm
-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
-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 .
-.El
-.Pp
-The
-.Nm
-utility 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 .
-The
-.Nm
-utility 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
-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
-.Dq cooked
-mode, and with
-.Dv XTABS and
-.Dv CRMOD
-enabled (see
-.Xr tty 4 ) .
-.Pp
-The
-.Nm
-utility 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
-.Nm
-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
-.Nm
-will not be doing any terminal echoing, so the
-client should do any terminal echoing that is needed.
-.It "WILL BINARY"
-Indicate 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"
-Indicate that it will not be sending
-.Dv IAC GA ,
-go ahead, commands.
-.It "WILL STATUS"
-Indicate 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 .
-.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
-is compiled with support for data encryption, and
-indicates a willingness to decrypt
-the data stream.
-.El
-.Pp
-The
-.Nm
-utility has support for enabling remotely the following
-.Tn TELNET
-options:
-.Bl -tag -width "DO AUTHENTICATION"
-.It "DO BINARY"
-Sent to indicate that
-.Nm
-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
-.Bx 4.2
-.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"
-Indicate 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"
-Indicate 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"
-Indicate a desire to be able to request information
-about the speed of the serial line to which
-the client is attached.
-.It "DO XDISPLOC"
-Indicate a desire to be able to request the name
-of the X Window System display that is associated with
-the telnet client.
-.It "DO NEW-ENVIRON"
-Indicate a desire to be able to request environment
-variable information, as described in RFC 1572.
-.It "DO ENVIRON"
-Indicate a desire to be able to request environment
-variable information, as described in RFC 1408.
-.It "DO LINEMODE"
-Only sent if
-.Nm
-is compiled with support for linemode, and
-requests that the client do line by line processing.
-.It "DO TIMING-MARK"
-Only sent if
-.Nm
-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
-is compiled with support for authentication, and
-indicates a willingness to receive authentication
-information for automatic login.
-.It "DO ENCRYPT"
-Only sent if
-.Nm
-is compiled with support for data encryption, and
-indicates a willingness to decrypt
-the data stream.
-.El
-.Sh NOTES
-By default
-.Nm
-will read the
-.Em \&he ,
-.Em \&hn ,
-and
-.Em \&im
-capabilities from
-.Pa /etc/gettytab
-and use that information (if present) to determine
-what to display before the login: prompt. You can
-also use a System V style
-.Pa /etc/issue
-file by using the
-.Em \&if
-capability, which will override
-.Em \&im .
-The information specified in either
-.Em \&im
-or
-.Em \&if
-will be displayed to both console and remote logins.
-.\" .Sh ENVIRONMENT
-.Sh FILES
-.Bl -tag -width /usr/ucb/bftp -compact
-.It Pa /etc/services
-.It Pa /etc/gettytab
-.It Pa /etc/iptos
-(if supported)
-.It Pa /usr/ucb/bftp
-(if supported)
-.El
-.Sh "SEE ALSO"
-.Xr bftp 1 ,
-.Xr login 1 ,
-.Xr gettytab 5 ,
-.Xr telnet 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
-.El
-.Sh BUGS
-Some
-.Tn TELNET
-commands are only partially implemented.
-.Pp
-Because of bugs in the original
-.Bx 4.2
-.Xr telnet 1 ,
-.Nm
-performs some dubious protocol exchanges to try to discover if the remote
-client is, in fact, a
-.Bx 4.2
-.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
-The
-.Nm
-utility never sends
-.Tn TELNET
-.Dv IAC GA
-(go ahead) commands.
-.Sh HISTORY
-IPv6 support was added by WIDE/KAME project.
diff --git a/libexec/telnetd/telnetd.c b/libexec/telnetd/telnetd.c
deleted file mode 100644
index 042fea5..0000000
--- a/libexec/telnetd/telnetd.c
+++ /dev/null
@@ -1,1117 +0,0 @@
-/*
- * 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.
- */
-
-#if 0
-#ifndef lint
-static const char sccsid[] = "@(#)telnetd.c	8.4 (Berkeley) 5/30/95";
-#endif
-#endif
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include "telnetd.h"
-#include "pathnames.h"
-
-#include <sys/mman.h>
-#include <err.h>
-#include <libutil.h>
-#include <paths.h>
-#include <termcap.h>
-#include <utmp.h>
-
-#include <arpa/inet.h>
-
-#include <libtelnet/misc.h>
-
-char	remote_hostname[MAXHOSTNAMELEN];
-size_t	utmp_len = sizeof(remote_hostname) - 1;
-int	registerd_host_only = 0;
-
-
-/*
- * I/O data buffers,
- * pointers, and counters.
- */
-char	ptyibuf[BUFSIZ], *ptyip = ptyibuf;
-char	ptyibuf2[BUFSIZ];
-
-int readstream(int, char *, int);
-void doit(struct sockaddr *);
-int terminaltypeok(char *);
-
-int	hostinfo = 1;			/* do we print login banner? */
-
-static int debug = 0;
-int keepalive = 1;
-const char *altlogin;
-
-void doit(struct sockaddr *);
-int terminaltypeok(char *);
-void startslave(char *, int, char *);
-extern void usage(void);
-static void _gettermname(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', 'p', ':', 'S', ':', 'u', ':', 'U',
-	'4', '6',
-#ifdef BFTPDAEMON
-	'B',
-#endif
-#ifdef DIAGNOSTICS
-	'D', ':',
-#endif
-#ifdef	LINEMODE
-	'l',
-#endif
-	'\0'
-};
-
-int family = AF_INET;
-
-#ifndef	MAXHOSTNAMELEN
-#define	MAXHOSTNAMELEN 256
-#endif	/* MAXHOSTNAMELEN */
-
-char *hostname;
-char host_name[MAXHOSTNAMELEN];
-
-extern void telnet(int, int, char *);
-
-int level;
-char user_name[256];
-
-int
-main(int argc, char *argv[])
-{
-	struct sockaddr_storage from;
-	int on = 1, fromlen;
-	int ch;
-#if	defined(IPPROTO_IP) && defined(IP_TOS)
-	int tos = -1;
-#endif
-
-	pfrontp = pbackp = ptyobuf;
-	netip = netibuf;
-	nfrontp = nbackp = netobuf;
-
-	/*
-	 * This initialization causes linemode to default to a configuration
-	 * that works on all telnet clients, including the FreeBSD client.
-	 * This is not quite the same as the telnet client issuing a "mode
-	 * character" command, but has most of the same benefits, and is
-	 * preferable since some clients (like usofts) don't have the
-	 * mode character command anyway and linemode breaks things.
-	 * The most notable symptom of fix is that csh "set filec" operations
-	 * like <ESC> (filename completion) and ^D (choices) keys now work
-	 * in telnet sessions and can be used more than once on the same line.
-	 * CR/LF handling is also corrected in some termio modes.  This 
-	 * change resolves problem reports bin/771 and bin/1037.
-	 */
-
-	linemode=1;	/*Default to mode that works on bulk of clients*/
-
-	while ((ch = getopt(argc, argv, valid_opts)) != -1) {
-		switch(ch) {
-
-
-#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 */
-
-
-		case 'h':
-			hostinfo = 0;
-			break;
-
-#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;
-
-		case 'p':
-			altlogin = optarg;
-			break;
-
-		case 'S':
-#ifdef	HAS_GETTOS
-			if ((tos = parsetos(optarg, "tcp")) < 0)
-				warnx("%s%s%s",
-					"bad TOS argument '", optarg,
-					"'; will try to use default TOS");
-#else
-			warnx("TOS option unavailable; -S flag not supported");
-#endif
-			break;
-
-		case 'u':
-			utmp_len = (size_t)atoi(optarg);
-			if (utmp_len >= sizeof(remote_hostname))
-				utmp_len = sizeof(remote_hostname) - 1;
-			break;
-
-		case 'U':
-			registerd_host_only = 1;
-			break;
-
-
-		case '4':
-			family = AF_INET;
-			break;
-
-#ifdef INET6
-		case '6':
-			family = AF_INET6;
-			break;
-#endif
-
-		default:
-			warnx("%c: unknown option", ch);
-			/* FALLTHROUGH */
-		case '?':
-			usage();
-			/* NOTREACHED */
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	if (debug) {
-	    int s, ns, foo, error;
-	    const char *service = "telnet";
-	    struct addrinfo hints, *res;
-
-	    if (argc > 1) {
-		usage();
-		/* NOT REACHED */
-	    } else if (argc == 1)
-		service = *argv;
-
-	    memset(&hints, 0, sizeof(hints));
-	    hints.ai_flags = AI_PASSIVE;
-	    hints.ai_family = family;
-	    hints.ai_socktype = SOCK_STREAM;
-	    hints.ai_protocol = 0;
-	    error = getaddrinfo(NULL, service, &hints, &res);
-
-	    if (error) {
-		errx(1, "tcp/%s: %s\n", service, gai_strerror(error));
-		if (error == EAI_SYSTEM)
-		    errx(1, "tcp/%s: %s\n", service, strerror(errno));
-		usage();
-	    }
-
-	    s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
-	    if (s < 0)
-		    err(1, "socket");
-	    (void) setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
-				(char *)&on, sizeof(on));
-	    if (bind(s, res->ai_addr, res->ai_addrlen) < 0)
-		err(1, "bind");
-	    if (listen(s, 1) < 0)
-		err(1, "listen");
-	    foo = res->ai_addrlen;
-	    ns = accept(s, res->ai_addr, &foo);
-	    if (ns < 0)
-		err(1, "accept");
-	    (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 */
-	}
-
-	openlog("telnetd", LOG_PID | LOG_ODELAY, LOG_DAEMON);
-	fromlen = sizeof (from);
-	if (getpeername(0, (struct sockaddr *)&from, &fromlen) < 0) {
-		warn("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 (from.ss_family == AF_INET) {
-# 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((struct sockaddr *)&from);
-	/* NOTREACHED */
-	return(0);
-}  /* end of main */
-
-	void
-usage()
-{
-	fprintf(stderr, "usage: telnetd");
-#ifdef BFTPDAEMON
-	fprintf(stderr, " [-B]");
-#endif
-	fprintf(stderr, " [-debug]");
-#ifdef DIAGNOSTICS
-	fprintf(stderr, " [-D (options|report|exercise|netdata|ptydata)]\n\t");
-#endif
-	fprintf(stderr, " [-h]");
-#if	defined(LINEMODE) && defined(KLUDGELINEMODE)
-	fprintf(stderr, " [-k]");
-#endif
-#ifdef LINEMODE
-	fprintf(stderr, " [-l]");
-#endif
-	fprintf(stderr, " [-n]");
-	fprintf(stderr, "\n\t");
-#ifdef	HAS_GETTOS
-	fprintf(stderr, " [-S tos]");
-#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
-};
-
-
-#define undef2 __unused
-
-static int
-getterminaltype(char *name undef2)
-{
-    int retval = -1;
-
-    settimer(baseline);
-
-    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 (
-	   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();
-    }
-    if (his_state_is_will(TELOPT_TSPEED)) {
-	static unsigned char sb[] =
-			{ IAC, SB, TELOPT_TSPEED, TELQUAL_SEND, IAC, SE };
-
-	output_datalen(sb, 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 };
-
-	output_datalen(sb, 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 };
-
-	output_datalen(sb, 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 };
-
-	output_datalen(sb, sizeof sb);
-	DIAG(TD_OPTIONS, printsub('>', sb + 2, sizeof sb - 2););
-    }
-    if (his_state_is_will(TELOPT_TTYPE)) {
-
-	output_datalen(ttytype_sbbuf, 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)-1);
-	    first[sizeof(first)-1] = '\0';
-	    for(;;) {
-		/*
-		 * Save the unknown name, and request the next name.
-		 */
-		(void) strncpy(last, terminaltype, sizeof(last)-1);
-		last[sizeof(last)-1] = '\0';
-		_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(terminaltype)-1);
-			terminaltype[sizeof(terminaltype)-1] = '\0';
-		    }
-		    break;
-		}
-	    }
-	}
-    }
-    return(retval);
-}  /* end of getterminaltype */
-
-static void
-_gettermname(void)
-{
-    /*
-     * 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);
-    output_datalen(ttytype_sbbuf, sizeof ttytype_sbbuf);
-    DIAG(TD_OPTIONS, printsub('>', ttytype_sbbuf + 2,
-					sizeof ttytype_sbbuf - 2););
-    while (sequenceIs(ttypesubopt, baseline))
-	ttloop();
-}
-
-int
-terminaltypeok(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);
-}
-
-/*
- * Get a pty, scan input lines.
- */
-void
-doit(struct sockaddr *who)
-{
-	int err_; /* XXX */
-	int ptynum;
-
-	/*
-	 * 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;
-
-		if ((lp = getpty()) == NULL)
-			fatal(net, "Out of ptys");
-
-		if ((pty = open(lp, 2)) >= 0) {
-			strlcpy(line,lp,sizeof(line));
-			line[5] = 't';
-			break;
-		}
-	}
-#endif
-
-	/* get name of connected client */
-	if (realhostname_sa(remote_hostname, sizeof(remote_hostname) - 1,
-	    who, who->sa_len) == HOSTNAME_INVALIDADDR && registerd_host_only)
-		fatal(net, "Couldn't resolve your address into a host name.\r\n\
-	Please contact your net administrator");
-	remote_hostname[sizeof(remote_hostname) - 1] = '\0';
-
-	trimdomain(remote_hostname, UT_HOSTSIZE);
-	if (!isdigit(remote_hostname[0]) && strlen(remote_hostname) > utmp_len)
-		err_ = getnameinfo(who, who->sa_len, remote_hostname,
-				  sizeof(remote_hostname), NULL, 0,
-				  NI_NUMERICHOST|NI_WITHSCOPEID);
-		/* XXX: do 'err_' check */
-
-	(void) gethostname(host_name, sizeof(host_name) - 1);
-	host_name[sizeof(host_name) - 1] = '\0';
-	hostname = host_name;
-
-
-	init_env();
-	/*
-	 * get terminal type.
-	 */
-	*user_name = 0;
-	level = getterminaltype(user_name);
-	setenv("TERM", terminaltype ? terminaltype : "network", 1);
-
-	telnet(net, pty, remote_hostname);	/* begin server process */
-
-	/*NOTREACHED*/
-}  /* end of doit */
-
-/*
- * Main loop.  Select from pty and network, and
- * hand data to telnet receiver finite state machine.
- */
-void
-telnet(int f, int p, char *host)
-{
-	int on = 1;
-#define	TABBUFSIZ	512
-	char	defent[TABBUFSIZ];
-	char	defstrs[TABBUFSIZ];
-#undef	TABBUFSIZ
-	char *HE;
-	char *HN;
-	char *IM;
-	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, output_data("td: simulating recv\r\n"));
-		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);
-
-	/*
-	 * Turn on packet mode
-	 */
-	(void) ioctl(p, TIOCPKT, (char *)&on);
-
-#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(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);
-
-#ifdef  TIOCNOTTY
-	{
-		int t;
-		t = open(_PATH_TTY, O_RDWR);
-		if (t >= 0) {
-			(void) ioctl(t, TIOCNOTTY, (char *)0);
-			(void) close(t);
-		}
-	}
-#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 (getent(defent, "default") == 1) {
-		char *cp=defstrs;
-
-		HE = Getstr("he", &cp);
-		HN = Getstr("hn", &cp);
-		IM = Getstr("im", &cp);
-		if (HN && *HN)
-			(void) strlcpy(host_name, HN, sizeof(host_name));
-		if (IM == 0)
-			IM = strdup("");
-	} else {
-		IM = strdup(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, output_data("td: Entering processing loop\r\n"));
-
-	/*
-	 * Startup the login process on the slave side of the terminal
-	 * now.  We delay this until here to insure option negotiation
-	 * is complete.
-	 */
-	startslave(host, level, user_name);
-
-	nfd = ((f > p) ? f : p) + 1;
-	for (;;) {
-		fd_set ibits, obits, xbits;
-		int c;
-
-		if (ncc < 0 && pcc < 0)
-			break;
-
-		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),
-			output_data("td: netread %d chars\r\n", ncc));
-		    DIAG(TD_NETDATA, printdata("nd", netip, ncc));
-		}
-
-		/*
-		 * Something to read from the pty...
-		 */
-		if (FD_ISSET(p, &ibits)) {
-			pcc = read(p, ptyibuf, BUFSIZ);
-			/*
-			 * 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;
-#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.
-					 */
-					output_data("%c%c", IAC, 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;
-						output_data("%c%c%c%c%c%c",
-							IAC, SB, TELOPT_LFLOW,
-							flowmode ? LFLOW_ON
-								 : LFLOW_OFF,
-							IAC, SE);
-						DIAG(TD_OPTIONS, printsub('>',
-						    (unsigned char *)nfrontp-4,
-						    4););
-					}
-				}
-				pcc--;
-				ptyip = ptyibuf+1;
-			}
-		}
-
-		while (pcc > 0) {
-			if ((&netobuf[BUFSIZ] - nfrontp) < 2)
-				break;
-			c = *ptyip++ & 0377, pcc--;
-			if (c == IAC)
-				output_data("%c", c);
-			output_data("%c", c);
-			if ((c == '\r') && (my_state_is_wont(TELOPT_BINARY))) {
-				if (pcc > 0 && ((*ptyip & 0377) == '\n')) {
-					output_data("%c", *ptyip++ & 0377);
-					pcc--;
-				} else
-					output_data("%c", '\0');
-			}
-		}
-
-		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
-
-/*
- * Send interrupt to process on other side of pty.
- * If it is in raw mode, just write NULL;
- * otherwise, write intr char.
- */
-void
-interrupt(void)
-{
-	ptyflush();	/* half-hearted */
-
-#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 */
-}
-
-/*
- * Send quit to process on other side of pty.
- * If it is in raw mode, just write NULL;
- * otherwise, write quit char.
- */
-void
-sendbrk(void)
-{
-	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(void)
-{
-#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(void)
-{
-#if	defined(SIGINFO) && defined(TCSIG)
-	if (slctab[SLC_AYT].sptr && *slctab[SLC_AYT].sptr != _POSIX_VDISABLE) {
-		(void) ioctl(pty, TCSIG, (char *)SIGINFO);
-		return;
-	}
-#endif
-	output_data("\r\n[Yes]\r\n");
-}
-
-void
-doeof(void)
-{
-	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/libexec/telnetd/telnetd.h b/libexec/telnetd/telnetd.h
deleted file mode 100644
index 5bfc572..0000000
--- a/libexec/telnetd/telnetd.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- * 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
- * $FreeBSD$
- */
-
-
-#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	const char *altlogin;
diff --git a/libexec/telnetd/termstat.c b/libexec/telnetd/termstat.c
deleted file mode 100644
index 8d8257d..0000000
--- a/libexec/telnetd/termstat.c
+++ /dev/null
@@ -1,610 +0,0 @@
-/*
- * 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.
- */
-
-#if 0
-#ifndef lint
-static const char sccsid[] = "@(#)termstat.c	8.2 (Berkeley) 5/30/95";
-#endif
-#endif
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#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 */
-
-#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)
-{
-	int need_will_echo = 0;
-
-	/*
-	 * 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);
-	}
-
-	if (uselinemode) {
-		/*
-		 * Check for state of BINARY options.
-		 *
-		 * We only need to do the binary dance if we are actually going
-		 * to use linemode.  As this confuses some telnet clients
-		 * that don't support linemode, and doesn't gain us
-		 * anything, we don't do it unless we're doing linemode.
-		 * -Crh (henrich@msu.edu)
-		 */
-
-		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);
-		}
-	}
-
-
-	/*
-	 * 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 */
-			output_data("%c%c%c%c%c%c%c", IAC, SB,
-				TELOPT_LINEMODE, LM_MODE, useeditmode,
-				IAC, SE);
-			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.
-			 */
-			output_data("%c%c%c%c%c%c%c", IAC, SB,
-				TELOPT_LINEMODE, LM_MODE, useeditmode,
-				IAC, SE);
-			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(void)
-{
-	if (his_state_is_will(TELOPT_LFLOW)) {
-		if (tty_flowmode() != flowmode) {
-			flowmode = tty_flowmode();
-			output_data("%c%c%c%c%c%c",
-					IAC, SB, TELOPT_LFLOW,
-					flowmode ? LFLOW_ON : LFLOW_OFF,
-					IAC, SE);
-		}
-		if (tty_restartany() != restartany) {
-			restartany = tty_restartany();
-			output_data("%c%c%c%c%c%c",
-					IAC, SB, TELOPT_LFLOW,
-					restartany ? LFLOW_RESTART_ANY
-						   : LFLOW_RESTART_XON,
-					IAC, SE);
-		}
-	}
-}
-
-/*
- * 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(int code, int parm1, int parm2)
-{
-
-	/*
-	 * 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;
-				output_data("%c%c%c%c%c%c%c", IAC,
-					SB, TELOPT_LINEMODE, LM_MODE,
-							useeditmode, IAC, SE);
-				editmode = useeditmode;
-			}
-
-
-			tty_setlinemode(uselinemode);
-
-			linemode = uselinemode;
-
-			if (!linemode)
-				send_will(TELOPT_ECHO, 1);
-		}
-		break;
-
-	case LM_MODE:
-	    {
-		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) {
-				output_data("%c%c%c%c%c%c%c", IAC,
-					SB, TELOPT_LINEMODE, LM_MODE,
- 					useeditmode|MODE_ACK,
- 					IAC, SE);
- 			}
-
-			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 separate 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 */
-
-	netflush();
-
-}  /* end of clientstat */
-
-#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(void)
-{
-
-	/*
-	 * 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(void)
-{
-	return(_terminit);
-
-}  /* end of terminit */
-#endif	/* LINEMODE */
diff --git a/libexec/telnetd/utility.c b/libexec/telnetd/utility.c
deleted file mode 100644
index 042b248..0000000
--- a/libexec/telnetd/utility.c
+++ /dev/null
@@ -1,900 +0,0 @@
-/*
- * 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.
- */
-
-#if 0
-#ifndef lint
-static const char sccsid[] = "@(#)utility.c	8.4 (Berkeley) 5/30/95";
-#endif /* not lint */
-#endif
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#ifdef __FreeBSD__
-#include <locale.h>
-#include <sys/utsname.h>
-#endif
-#include <string.h>
-#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()
-{
-
-    DIAG(TD_REPORT, output_data("td: ttloop\r\n"));
-    if (nfrontp - nbackp > 0) {
-	netflush();
-    }
-    ncc = read(net, netibuf, sizeof netibuf);
-    if (ncc < 0) {
-	syslog(LOG_INFO, "ttloop:  read: %m");
-	exit(1);
-    } else if (ncc == 0) {
-	syslog(LOG_INFO, "ttloop:  peer died: %m");
-	exit(1);
-    }
-    DIAG(TD_REPORT, output_data("td: ttloop read %d chars\r\n", ncc));
-    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(int s)
-{
-    static struct timeval timeout = { 0, 0 };
-    fd_set	excepts;
-    int value;
-
-    do {
-	FD_ZERO(&excepts);
-	FD_SET(s, &excepts);
-	memset((char *)&timeout, 0, sizeof timeout);
-	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(void)
-{
-	int n;
-
-	if ((n = pfrontp - pbackp) > 0) {
-		DIAG(TD_REPORT | TD_PTYDATA,
-		    output_data("td: ptyflush %d chars\r\n", n));
-		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.
- */
-static char *
-nextitem(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 */
-	{
-	    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(void)
-{
-    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)) <= nbackp) {
-	thisitem = next;
-    }
-
-    /* Now, thisitem is first before/at boundary. */
-
-    good = netobuf;	/* where the good bytes go */
-
-    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(void)
-{
-    int n;
-    extern int not42;
-
-    while ((n = nfrontp - nbackp) > 0) {
-#if 0
-	/* XXX This causes output_data() to recurse and die */
-	DIAG(TD_REPORT, {
-	    n += output_data("td: netflush %d chars\r\n", n);
-	});
-#endif
-	/*
-	 * 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 == -1) {
-	    if (errno == EWOULDBLOCK || errno == EINTR)
-		continue;
-	    cleanup(0);
-	    /* NOTREACHED */
-	}
-	nbackp += n;
-	if (nbackp >= neturg) {
-	    neturg = 0;
-	}
-	if (nbackp == nfrontp) {
-	    nbackp = nfrontp = netobuf;
-	}
-    }
-    return;
-}  /* end of netflush */
-
-
-/*
- * miscellaneous functions doing a variety of little jobs follow ...
- */
-
-
-void
-fatal(int f, const char *msg)
-{
-	char buf[BUFSIZ];
-
-	(void) snprintf(buf, sizeof(buf), "telnetd: %s.\r\n", msg);
-	(void) write(f, buf, (int)strlen(buf));
-	sleep(1);	/*XXX*/
-	exit(1);
-}
-
-void
-fatalperror(int f, const char *msg)
-{
-	char buf[BUFSIZ];
-
-	(void) snprintf(buf, sizeof(buf), "%s: %s", msg, strerror(errno));
-	fatal(f, buf);
-}
-
-char editedhost[32];
-
-void
-edithost(char *pat, char *host)
-{
-	char *res = editedhost;
-
-	if (!pat)
-		pat = strdup("");
-	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;
-
-static void
-putstr(const char *s)
-{
-
-	while (*s)
-		putchr(*s++);
-}
-
-void
-putchr(int cc)
-{
-	*putlocation++ = cc;
-}
-
-#ifdef __FreeBSD__
-static char fmtstr[] = { "%+" };
-#else
-static char fmtstr[] = { "%l:%M%P on %A, %d %B %Y" };
-#endif
-
-void
-putf(char *cp, char *where)
-{
-	char *slash;
-	time_t t;
-	char db[100];
-#ifdef __FreeBSD__
-	static struct utsname kerninfo;
-
-	if (!*kerninfo.sysname)
-		uname(&kerninfo);
-#endif
-
-	putlocation = where;
-
-	while (*cp) {
-		if (*cp =='\n') {
-			putstr("\r\n");
-			cp++;
-			continue;
-		} else 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':
-#ifdef __FreeBSD__
-			setlocale(LC_TIME, "");
-#endif
-			(void)time(&t);
-			(void)strftime(db, sizeof(db), fmtstr, localtime(&t));
-			putstr(db);
-			break;
-
-#ifdef __FreeBSD__
-		case 's':
-			putstr(kerninfo.sysname);
-			break;
-
-		case 'm':
-			putstr(kerninfo.machine);
-			break;
-
-		case 'r':
-			putstr(kerninfo.release);
-			break;
-
-		case 'v':
-			putstr(kerninfo.version);
-			break;
-#endif
-
-		case '%':
-			putchr('%');
-			break;
-		}
-		cp++;
-	}
-}
-
-#ifdef DIAGNOSTICS
-/*
- * Print telnet options and commands in plain text, if possible.
- */
-void
-printoption(const char *fmt, int option)
-{
-	if (TELOPT_OK(option))
-		output_data("%s %s\r\n", fmt, TELOPT(option));
-	else if (TELCMD_OK(option))
-		output_data("%s %s\r\n", fmt, TELCMD(option));
-	else
-		output_data("%s %d\r\n", fmt, option);
-	return;
-}
-
-void
-printsub(char direction, unsigned char *pointer, int length)
-{
-    int i = 0;
-
-	if (!(diagnostic & TD_OPTIONS))
-		return;
-
-	if (direction) {
-	    output_data("td: %s suboption ",
-					direction == '<' ? "recv" : "send");
-	    if (length >= 3) {
-		int j;
-
-		i = pointer[length-2];
-		j = pointer[length-1];
-
-		if (i != IAC || j != SE) {
-		    output_data("(terminated by ");
-		    if (TELOPT_OK(i))
-			output_data("%s ", TELOPT(i));
-		    else if (TELCMD_OK(i))
-			output_data("%s ", TELCMD(i));
-		    else
-			output_data("%d ", i);
-		    if (TELOPT_OK(j))
-			output_data("%s", TELOPT(j));
-		    else if (TELCMD_OK(j))
-			output_data("%s", TELCMD(j));
-		    else
-			output_data("%d", j);
-		    output_data(", not IAC SE!) ");
-		}
-	    }
-	    length -= 2;
-	}
-	if (length < 1) {
-	    output_data("(Empty suboption??\?)");
-	    return;
-	}
-	switch (pointer[0]) {
-	case TELOPT_TTYPE:
-	    output_data("TERMINAL-TYPE ");
-	    switch (pointer[1]) {
-	    case TELQUAL_IS:
-		output_data("IS \"%.*s\"", length-2, (char *)pointer+2);
-		break;
-	    case TELQUAL_SEND:
-		output_data("SEND");
-		break;
-	    default:
-		output_data(
-				"- unknown qualifier %d (0x%x).",
-				pointer[1], pointer[1]);
-	    }
-	    break;
-	case TELOPT_TSPEED:
-	    output_data("TERMINAL-SPEED");
-	    if (length < 2) {
-		output_data(" (empty suboption??\?)");
-		break;
-	    }
-	    switch (pointer[1]) {
-	    case TELQUAL_IS:
-		output_data(" IS %.*s", length-2, (char *)pointer+2);
-		break;
-	    default:
-		if (pointer[1] == 1)
-		    output_data(" SEND");
-		else
-		    output_data(" %d (unknown)", pointer[1]);
-		for (i = 2; i < length; i++) {
-		    output_data(" ?%d?", pointer[i]);
-		}
-		break;
-	    }
-	    break;
-
-	case TELOPT_LFLOW:
-	    output_data("TOGGLE-FLOW-CONTROL");
-	    if (length < 2) {
-		output_data(" (empty suboption??\?)");
-		break;
-	    }
-	    switch (pointer[1]) {
-	    case LFLOW_OFF:
-		output_data(" OFF"); break;
-	    case LFLOW_ON:
-		output_data(" ON"); break;
-	    case LFLOW_RESTART_ANY:
-		output_data(" RESTART-ANY"); break;
-	    case LFLOW_RESTART_XON:
-		output_data(" RESTART-XON"); break;
-	    default:
-		output_data(" %d (unknown)", pointer[1]);
-	    }
-	    for (i = 2; i < length; i++) {
-		output_data(" ?%d?", pointer[i]);
-	    }
-	    break;
-
-	case TELOPT_NAWS:
-	    output_data("NAWS");
-	    if (length < 2) {
-		output_data(" (empty suboption??\?)");
-		break;
-	    }
-	    if (length == 2) {
-		output_data(" ?%d?", pointer[1]);
-		break;
-	    }
-	    output_data(" %d %d (%d)",
-		pointer[1], pointer[2],
-		(int)((((unsigned int)pointer[1])<<8)|((unsigned int)pointer[2])));
-	    if (length == 4) {
-		output_data(" ?%d?", pointer[3]);
-		break;
-	    }
-	    output_data(" %d %d (%d)",
-		pointer[3], pointer[4],
-		(int)((((unsigned int)pointer[3])<<8)|((unsigned int)pointer[4])));
-	    for (i = 5; i < length; i++) {
-		output_data(" ?%d?", pointer[i]);
-	    }
-	    break;
-
-	case TELOPT_LINEMODE:
-	    output_data("LINEMODE ");
-	    if (length < 2) {
-		output_data(" (empty suboption??\?)");
-		break;
-	    }
-	    switch (pointer[1]) {
-	    case WILL:
-		output_data("WILL ");
-		goto common;
-	    case WONT:
-		output_data("WONT ");
-		goto common;
-	    case DO:
-		output_data("DO ");
-		goto common;
-	    case DONT:
-		output_data("DONT ");
-	    common:
-		if (length < 3) {
-		    output_data("(no option??\?)");
-		    break;
-		}
-		switch (pointer[2]) {
-		case LM_FORWARDMASK:
-		    output_data("Forward Mask");
-		    for (i = 3; i < length; i++) {
-			output_data(" %x", pointer[i]);
-		    }
-		    break;
-		default:
-		    output_data("%d (unknown)", pointer[2]);
-		    for (i = 3; i < length; i++) {
-			output_data(" %d", pointer[i]);
-		    }
-		    break;
-		}
-		break;
-
-	    case LM_SLC:
-		output_data("SLC");
-		for (i = 2; i < length - 2; i += 3) {
-		    if (SLC_NAME_OK(pointer[i+SLC_FUNC]))
-			output_data(" %s", SLC_NAME(pointer[i+SLC_FUNC]));
-		    else
-			output_data(" %d", pointer[i+SLC_FUNC]);
-		    switch (pointer[i+SLC_FLAGS]&SLC_LEVELBITS) {
-		    case SLC_NOSUPPORT:
-			output_data(" NOSUPPORT"); break;
-		    case SLC_CANTCHANGE:
-			output_data(" CANTCHANGE"); break;
-		    case SLC_VARIABLE:
-			output_data(" VARIABLE"); break;
-		    case SLC_DEFAULT:
-			output_data(" DEFAULT"); break;
-		    }
-		    output_data("%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)) {
-			output_data("(0x%x)", pointer[i+SLC_FLAGS]);
-		    }
-		    output_data(" %d;", pointer[i+SLC_VALUE]);
-		    if ((pointer[i+SLC_VALUE] == IAC) &&
-			(pointer[i+SLC_VALUE+1] == IAC))
-				i++;
-		}
-		for (; i < length; i++) {
-		    output_data(" ?%d?", pointer[i]);
-		}
-		break;
-
-	    case LM_MODE:
-		output_data("MODE ");
-		if (length < 3) {
-		    output_data("(no mode??\?)");
-		    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" : "");
-		    output_data("%s", tbuf[1] ? &tbuf[1] : "0");
-		}
-		if (pointer[2]&~(MODE_EDIT|MODE_TRAPSIG|MODE_ACK)) {
-		    output_data(" (0x%x)", pointer[2]);
-		}
-		for (i = 3; i < length; i++) {
-		    output_data(" ?0x%x?", pointer[i]);
-		}
-		break;
-	    default:
-		output_data("%d (unknown)", pointer[1]);
-		for (i = 2; i < length; i++) {
-		    output_data(" %d", pointer[i]);
-		}
-	    }
-	    break;
-
-	case TELOPT_STATUS: {
-	    const char *cp;
-	    int j, k;
-
-	    output_data("STATUS");
-
-	    switch (pointer[1]) {
-	    default:
-		if (pointer[1] == TELQUAL_SEND)
-		    output_data(" SEND");
-		else
-		    output_data(" %d (unknown)", pointer[1]);
-		for (i = 2; i < length; i++) {
-		    output_data(" ?%d?", pointer[i]);
-		}
-		break;
-	    case TELQUAL_IS:
-		output_data(" IS\r\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(pointer[i]))
-			    output_data(" %s %s", cp, TELOPT(pointer[i]));
-			else
-			    output_data(" %s %d", cp, pointer[i]);
-
-			output_data("\r\n");
-			break;
-
-		    case SB:
-			output_data(" 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) {
-			    output_data(" SE");
-			    i = j;
-			} else
-			    i = j - 1;
-
-			output_data("\r\n");
-
-			break;
-
-		    default:
-			output_data(" %d", pointer[i]);
-			break;
-		    }
-		}
-		break;
-	    }
-	    break;
-	  }
-
-	case TELOPT_XDISPLOC:
-	    output_data("X-DISPLAY-LOCATION ");
-	    switch (pointer[1]) {
-	    case TELQUAL_IS:
-		output_data("IS \"%.*s\"", length-2, (char *)pointer+2);
-		break;
-	    case TELQUAL_SEND:
-		output_data("SEND");
-		break;
-	    default:
-		output_data("- unknown qualifier %d (0x%x).",
-				pointer[1], pointer[1]);
-	    }
-	    break;
-
-	case TELOPT_NEW_ENVIRON:
-	    output_data("NEW-ENVIRON ");
-	    goto env_common1;
-	case TELOPT_OLD_ENVIRON:
-	    output_data("OLD-ENVIRON");
-	env_common1:
-	    switch (pointer[1]) {
-	    case TELQUAL_IS:
-		output_data("IS ");
-		goto env_common;
-	    case TELQUAL_SEND:
-		output_data("SEND ");
-		goto env_common;
-	    case TELQUAL_INFO:
-		output_data("INFO ");
-	    env_common:
-		{
-		    int noquote = 2;
-		    for (i = 2; i < length; i++ ) {
-			switch (pointer[i]) {
-			case NEW_ENV_VAR:
-			    output_data("\" VAR " + noquote);
-			    noquote = 2;
-			    break;
-
-			case NEW_ENV_VALUE:
-			    output_data("\" VALUE " + noquote);
-			    noquote = 2;
-			    break;
-
-			case ENV_ESC:
-			    output_data("\" ESC " + noquote);
-			    noquote = 2;
-			    break;
-
-			case ENV_USERVAR:
-			    output_data("\" USERVAR " + noquote);
-			    noquote = 2;
-			    break;
-
-			default:
-			    if (isprint(pointer[i]) && pointer[i] != '"') {
-				if (noquote) {
-				    output_data("\"");
-				    noquote = 0;
-				}
-				output_data("%c", pointer[i]);
-			    } else {
-				output_data("\" %03o " + noquote,
-							pointer[i]);
-				noquote = 2;
-			    }
-			    break;
-			}
-		    }
-		    if (!noquote)
-			output_data("\"");
-		    break;
-		}
-	    }
-	    break;
-
-
-
-	default:
-	    if (TELOPT_OK(pointer[0]))
-		output_data("%s (unknown)", TELOPT(pointer[0]));
-	    else
-		output_data("%d (unknown)", pointer[i]);
-	    for (i = 1; i < length; i++) {
-		output_data(" %d", pointer[i]);
-	    }
-	    break;
-	}
-	output_data("\r\n");
-}
-
-/*
- * Dump a data buffer in hex and ascii to the output data stream.
- */
-void
-printdata(const char *tag, char *ptr, int cnt)
-{
-	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 */
-		output_data("%s: ", tag);
-		for (i = 0; i < 20 && cnt; i++) {
-			output_data("%02x", *ptr);
-			if (isprint(*ptr)) {
-				xbuf[i] = *ptr;
-			} else {
-				xbuf[i] = '.';
-			}
-			if (i % 2) {
-				output_data(" ");
-			}
-			cnt--;
-			ptr++;
-		}
-		xbuf[i] = '\0';
-		output_data(" %s\r\n", xbuf );
-	}
-}
-#endif /* DIAGNOSTICS */