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-rw-r--r--usr.bin/telnet/main.c322
1 files changed, 322 insertions, 0 deletions
diff --git a/usr.bin/telnet/main.c b/usr.bin/telnet/main.c
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+++ b/usr.bin/telnet/main.c
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+/*
+ * Copyright (c) 1988, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1988, 1990, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 12/15/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include "ring.h"
+#include "externs.h"
+#include "defines.h"
+
+/* These values need to be the same as defined in libtelnet/kerberos5.c */
+/* Either define them in both places, or put in some common header file. */
+#define OPTS_FORWARD_CREDS 0x00000002
+#define OPTS_FORWARDABLE_CREDS 0x00000001
+
+#if 0
+#define FORWARD
+#endif
+
+/*
+ * Initialize variables.
+ */
+ void
+tninit()
+{
+ init_terminal();
+
+ init_network();
+
+ init_telnet();
+
+ init_sys();
+
+#if defined(TN3270)
+ init_3270();
+#endif
+}
+
+ void
+usage()
+{
+ fprintf(stderr, "Usage: %s %s%s%s%s\n",
+ prompt,
+#ifdef AUTHENTICATION
+ "[-8] [-E] [-K] [-L] [-S tos] [-X atype] [-a] [-c] [-d] [-e char]",
+ "\n\t[-k realm] [-l user] [-f/-F] [-n tracefile] ",
+#else
+ "[-8] [-E] [-L] [-S tos] [-a] [-c] [-d] [-e char] [-l user]",
+ "\n\t[-n tracefile]",
+#endif
+#if defined(TN3270) && defined(unix)
+# ifdef AUTHENTICATION
+ "[-noasynch] [-noasynctty]\n\t[-noasyncnet] [-r] [-t transcom] ",
+# else
+ "[-noasynch] [-noasynctty] [-noasyncnet] [-r]\n\t[-t transcom]",
+# endif
+#else
+ "[-r] ",
+#endif
+#ifdef ENCRYPTION
+ "[-x] [host-name [port]]"
+#else /* ENCRYPTION */
+ "[host-name [port]]"
+#endif /* ENCRYPTION */
+ );
+ exit(1);
+}
+
+/*
+ * main. Parse arguments, invoke the protocol or command parser.
+ */
+
+
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ extern char *optarg;
+ extern int optind;
+ int ch;
+ char *user, *strrchr();
+#ifdef FORWARD
+ extern int forward_flags;
+#endif /* FORWARD */
+
+ tninit(); /* Clear out things */
+#if defined(CRAY) && !defined(__STDC__)
+ _setlist_init(); /* Work around compiler bug */
+#endif
+
+ TerminalSaveState();
+
+ if (prompt = strrchr(argv[0], '/'))
+ ++prompt;
+ else
+ prompt = argv[0];
+
+ user = NULL;
+
+ rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE;
+ autologin = -1;
+
+ while ((ch = getopt(argc, argv, "8EKLS:X:acde:fFk:l:n:rt:x")) != EOF) {
+ switch(ch) {
+ case '8':
+ eight = 3; /* binary output and input */
+ break;
+ case 'E':
+ rlogin = escape = _POSIX_VDISABLE;
+ break;
+ case 'K':
+#ifdef AUTHENTICATION
+ autologin = 0;
+#endif
+ break;
+ case 'L':
+ eight |= 2; /* binary output only */
+ break;
+ case 'S':
+ {
+#ifdef HAS_GETTOS
+ extern int tos;
+
+ if ((tos = parsetos(optarg, "tcp")) < 0)
+ fprintf(stderr, "%s%s%s%s\n",
+ prompt, ": Bad TOS argument '",
+ optarg,
+ "; will try to use default TOS");
+#else
+ fprintf(stderr,
+ "%s: Warning: -S ignored, no parsetos() support.\n",
+ prompt);
+#endif
+ }
+ break;
+ case 'X':
+#ifdef AUTHENTICATION
+ auth_disable_name(optarg);
+#endif
+ break;
+ case 'a':
+ autologin = 1;
+ break;
+ case 'c':
+ skiprc = 1;
+ break;
+ case 'd':
+ debug = 1;
+ break;
+ case 'e':
+ set_escape_char(optarg);
+ break;
+ case 'f':
+#if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
+ if (forward_flags & OPTS_FORWARD_CREDS) {
+ fprintf(stderr,
+ "%s: Only one of -f and -F allowed.\n",
+ prompt);
+ usage();
+ }
+ forward_flags |= OPTS_FORWARD_CREDS;
+#else
+ fprintf(stderr,
+ "%s: Warning: -f ignored, no Kerberos V5 support.\n",
+ prompt);
+#endif
+ break;
+ case 'F':
+#if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
+ if (forward_flags & OPTS_FORWARD_CREDS) {
+ fprintf(stderr,
+ "%s: Only one of -f and -F allowed.\n",
+ prompt);
+ usage();
+ }
+ forward_flags |= OPTS_FORWARD_CREDS;
+ forward_flags |= OPTS_FORWARDABLE_CREDS;
+#else
+ fprintf(stderr,
+ "%s: Warning: -F ignored, no Kerberos V5 support.\n",
+ prompt);
+#endif
+ break;
+ case 'k':
+#if defined(AUTHENTICATION) && defined(KRB4)
+ {
+ extern char *dest_realm, dst_realm_buf[], dst_realm_sz;
+ dest_realm = dst_realm_buf;
+ (void)strncpy(dest_realm, optarg, dst_realm_sz);
+ }
+#else
+ fprintf(stderr,
+ "%s: Warning: -k ignored, no Kerberos V4 support.\n",
+ prompt);
+#endif
+ break;
+ case 'l':
+ autologin = 1;
+ user = optarg;
+ break;
+ case 'n':
+#if defined(TN3270) && defined(unix)
+ /* distinguish between "-n oasynch" and "-noasynch" */
+ if (argv[optind - 1][0] == '-' && argv[optind - 1][1]
+ == 'n' && argv[optind - 1][2] == 'o') {
+ if (!strcmp(optarg, "oasynch")) {
+ noasynchtty = 1;
+ noasynchnet = 1;
+ } else if (!strcmp(optarg, "oasynchtty"))
+ noasynchtty = 1;
+ else if (!strcmp(optarg, "oasynchnet"))
+ noasynchnet = 1;
+ } else
+#endif /* defined(TN3270) && defined(unix) */
+ SetNetTrace(optarg);
+ break;
+ case 'r':
+ rlogin = '~';
+ break;
+ case 't':
+#if defined(TN3270) && defined(unix)
+ transcom = tline;
+ (void)strcpy(transcom, optarg);
+#else
+ fprintf(stderr,
+ "%s: Warning: -t ignored, no TN3270 support.\n",
+ prompt);
+#endif
+ break;
+ case 'x':
+#ifdef ENCRYPTION
+ encrypt_auto(1);
+ decrypt_auto(1);
+#else /* ENCRYPTION */
+ fprintf(stderr,
+ "%s: Warning: -x ignored, no ENCRYPT support.\n",
+ prompt);
+#endif /* ENCRYPTION */
+ break;
+ case '?':
+ default:
+ usage();
+ /* NOTREACHED */
+ }
+ }
+ if (autologin == -1)
+ autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1;
+
+ argc -= optind;
+ argv += optind;
+
+ if (argc) {
+ char *args[7], **argp = args;
+
+ if (argc > 2)
+ usage();
+ *argp++ = prompt;
+ if (user) {
+ *argp++ = "-l";
+ *argp++ = user;
+ }
+ *argp++ = argv[0]; /* host */
+ if (argc > 1)
+ *argp++ = argv[1]; /* port */
+ *argp = 0;
+
+ if (setjmp(toplevel) != 0)
+ Exit(0);
+ if (tn(argp - args, args) == 1)
+ return (0);
+ else
+ return (1);
+ }
+ (void)setjmp(toplevel);
+ for (;;) {
+#ifdef TN3270
+ if (shell_active)
+ shell_continue();
+ else
+#endif
+ command(1, 0, 0);
+ }
+}
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