2 * Copyright (c) 1988, 1990, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 static char *copyright[] = {
35 "@(#) Copyright (c) 1988, 1990, 1993\n"
36 "\tThe Regents of the University of California. All rights reserved.\n",
40 #include "telnet_locl.h"
41 RCSID("$Id: main.c,v 1.30 1999/11/13 06:30:11 assar Exp $");
43 /* These values need to be the same as defined in libtelnet/kerberos5.c */
44 /* Either define them in both places, or put in some common header file. */
45 #define OPTS_FORWARD_CREDS 0x00000002
46 #define OPTS_FORWARDABLE_CREDS 0x00000001
53 * Initialize variables.
70 fprintf(stderr, "Usage: %s %s%s%s%s\n", prompt,
72 "[-8] [-E] [-K] [-L] [-G] [-S tos] [-X atype] [-a] [-c] [-d] [-e char]",
73 "\n\t[-k realm] [-l user] [-f/-F] [-n tracefile] ",
75 "[-8] [-E] [-L] [-S tos] [-a] [-c] [-d] [-e char] [-l user]",
80 "[-x] [host-name [port]]"
89 * main. Parse arguments, invoke the protocol or command parser.
94 extern int forward_flags;
95 static int default_forward=0;
99 /* XXX ugly hack to setup dns-proxy stuff */
100 #define Authenticator asn1_Authenticator
105 krb5_context context;
106 krb5_init_context(&context);
108 #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
109 if (krb5_config_get_bool (context, NULL,
110 "libdefaults", "forward", NULL)) {
111 forward_flags |= OPTS_FORWARD_CREDS;
114 if (krb5_config_get_bool (context, NULL,
115 "libdefaults", "forwardable", NULL)) {
116 forward_flags |= OPTS_FORWARDABLE_CREDS;
121 if (krb5_config_get_bool (context, NULL,
122 "libdefaults", "encrypt", NULL)) {
129 krb5_free_context(context);
134 main(int argc, char **argv)
143 tninit(); /* Clear out things */
147 if ((prompt = strrchr(argv[0], '/')))
154 rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE;
157 * if AUTHENTICATION and ENCRYPTION is set autologin will be
158 * se to true after the getopt switch; unless the -K option is
163 while((ch = getopt(argc, argv,
164 "78DEKLS:X:abcde:fFk:l:n:rxG")) != -1) {
167 eight = 3; /* binary output and input */
176 /* sometimes we don't want a mangled display */
178 if((p = getenv("DISPLAY")))
179 env_define("DISPLAY", (unsigned char*)p);
183 rlogin = escape = _POSIX_VDISABLE;
186 #ifdef AUTHENTICATION
191 eight |= 2; /* binary output only */
198 if ((tos = parsetos(optarg, "tcp")) < 0)
199 fprintf(stderr, "%s%s%s%s\n",
200 prompt, ": Bad TOS argument '",
202 "; will try to use default TOS");
205 "%s: Warning: -S ignored, no parsetos() support.\n",
211 #ifdef AUTHENTICATION
212 auth_disable_name(optarg);
225 set_escape_char(optarg);
228 #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
229 if ((forward_flags & OPTS_FORWARD_CREDS) &&
232 "%s: Only one of -f and -F allowed.\n",
236 forward_flags |= OPTS_FORWARD_CREDS;
239 "%s: Warning: -f ignored, no Kerberos V5 support.\n",
244 #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
245 if ((forward_flags & OPTS_FORWARD_CREDS) &&
248 "%s: Only one of -f and -F allowed.\n",
252 forward_flags |= OPTS_FORWARD_CREDS;
253 forward_flags |= OPTS_FORWARDABLE_CREDS;
256 "%s: Warning: -F ignored, no Kerberos V5 support.\n",
261 #if defined(AUTHENTICATION) && defined(KRB4)
263 extern char *dest_realm, dst_realm_buf[];
264 extern int dst_realm_sz;
265 dest_realm = dst_realm_buf;
266 strlcpy(dest_realm, optarg, dst_realm_sz);
270 "%s: Warning: -k ignored, no Kerberos V4 support.\n",
276 fprintf(stderr, "%s: Warning: -K ignored\n", prompt);
294 "%s: Warning: -x ignored, no ENCRYPT support.\n",
299 #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
300 forward_flags ^= OPTS_FORWARD_CREDS;
301 forward_flags ^= OPTS_FORWARDABLE_CREDS;
304 "%s: Warning: -G ignored, no Kerberos V5 support.\n",
316 if (autologin == -1) { /* esc@magic.fi; force */
317 #if defined(AUTHENTICATION)
320 #if defined(ENCRYPTION)
327 autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1;
333 char *args[7], **argp = args;
342 *argp++ = argv[0]; /* host */
344 *argp++ = argv[1]; /* port */
347 if (setjmp(toplevel) != 0)
349 if (tn(argp - args, args) == 1)