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1.12 ! hin 1: /* $OpenBSD: main.c,v 1.11 2001/05/25 10:24:25 hin Exp $ */
1.2 niklas 2: /* $NetBSD: main.c,v 1.5 1996/02/28 21:04:05 thorpej Exp $ */
3:
1.1 deraadt 4: /*
1.2 niklas 5: * Copyright (c) 1988, 1990, 1993
6: * The Regents of the University of California. All rights reserved.
1.1 deraadt 7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
1.2 niklas 38: static char copyright[] =
39: "@(#) Copyright (c) 1988, 1990, 1993\n\
40: The Regents of the University of California. All rights reserved.\n";
1.1 deraadt 41: #endif /* not lint */
42:
1.5 art 43: #include "telnet_locl.h"
1.1 deraadt 44:
45: /* These values need to be the same as defined in libtelnet/kerberos5.c */
46: /* Either define them in both places, or put in some common header file. */
1.2 niklas 47: #define OPTS_FORWARD_CREDS 0x00000002
48: #define OPTS_FORWARDABLE_CREDS 0x00000001
1.1 deraadt 49:
1.11 hin 50: #ifdef KRB5
1.1 deraadt 51: #define FORWARD
1.11 hin 52: /* XXX ugly hack to setup dns-proxy stuff */
53: #define Authenticator asn1_Authenticator
54: #include <kerberosV/krb5.h>
1.1 deraadt 55: #endif
56:
1.6 art 57: #ifdef KRB4
58: #include <kerberosIV/krb.h>
59: #endif
60:
1.11 hin 61: #ifdef FORWARD
62: int forward_flags;
63: static int default_forward=0;
64: #endif
65:
1.1 deraadt 66: /*
67: * Initialize variables.
68: */
69: void
70: tninit()
71: {
72: init_terminal();
73:
74: init_network();
1.2 niklas 75:
1.1 deraadt 76: init_telnet();
77:
78: init_sys();
79:
80: #if defined(TN3270)
81: init_3270();
82: #endif
83: }
84:
85: void
86: usage()
87: {
88: fprintf(stderr, "Usage: %s %s%s%s%s\n",
89: prompt,
90: #ifdef AUTHENTICATION
1.2 niklas 91: "[-8] [-E] [-K] [-L] [-S tos] [-X atype] [-a] [-c] [-d] [-e char]",
1.9 deraadt 92: "\n\t[-k realm] [-l user] [-f/-F] [-n tracefile] [-b hostalias ] ",
1.1 deraadt 93: #else
1.2 niklas 94: "[-8] [-E] [-L] [-S tos] [-a] [-c] [-d] [-e char] [-l user]",
1.9 deraadt 95: "\n\t[-n tracefile] [-b hostalias ] ",
1.1 deraadt 96: #endif
97: #if defined(TN3270) && defined(unix)
98: # ifdef AUTHENTICATION
1.2 niklas 99: "[-noasynch] [-noasynctty]\n\t[-noasyncnet] [-r] [-t transcom] ",
1.1 deraadt 100: # else
1.2 niklas 101: "[-noasynch] [-noasynctty] [-noasyncnet] [-r]\n\t[-t transcom]",
1.1 deraadt 102: # endif
103: #else
104: "[-r] ",
105: #endif
1.9 deraadt 106: "\n\t"
1.5 art 107: #ifdef ENCRYPTION
1.9 deraadt 108: "[-x] "
1.5 art 109: #endif
1.9 deraadt 110: "[host-name [port]]");
1.1 deraadt 111: exit(1);
112: }
113:
1.11 hin 114:
115: #ifdef KRB5
116: static void
117: krb5_init(void)
118: {
119: krb5_context context;
120: krb5_error_code ret;
121:
122: ret = krb5_init_context(&context);
123: if (ret)
124: return;
125:
126: #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
127: if (krb5_config_get_bool (context, NULL,
128: "libdefaults", "forward", NULL)) {
129: forward_flags |= OPTS_FORWARD_CREDS;
130: default_forward=1;
131: }
132: if (krb5_config_get_bool (context, NULL,
133: "libdefaults", "forwardable", NULL)) {
134: forward_flags |= OPTS_FORWARDABLE_CREDS;
135: default_forward=1;
136: }
137: #endif
138: #ifdef ENCRYPTION
139: if (krb5_config_get_bool (context, NULL,
140: "libdefaults", "encrypt", NULL)) {
141: encrypt_auto(1);
142: decrypt_auto(1);
143: EncryptVerbose(1);
144: }
145: #endif
146:
147: krb5_free_context(context);
148: }
149: #endif
150:
1.1 deraadt 151: /*
152: * main. Parse arguments, invoke the protocol or command parser.
153: */
154:
1.7 art 155: int
1.1 deraadt 156: main(argc, argv)
157: int argc;
158: char *argv[];
159: {
160: extern char *optarg;
161: extern int optind;
162: int ch;
1.5 art 163: char *user, *alias;
1.1 deraadt 164: #ifdef FORWARD
165: extern int forward_flags;
166: #endif /* FORWARD */
167:
1.11 hin 168: #ifdef KRB5
169: krb5_init();
170: #endif
171:
1.1 deraadt 172: tninit(); /* Clear out things */
173:
174: TerminalSaveState();
175:
1.5 art 176: if ((prompt = strrchr(argv[0], '/')))
1.1 deraadt 177: ++prompt;
178: else
179: prompt = argv[0];
180:
1.3 niklas 181: user = alias = NULL;
1.1 deraadt 182:
183: rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE;
1.5 art 184:
185: /*
186: * if AUTHENTICATION and ENCRYPTION is set autologin will be
187: * set to true after the getopt switch; unless the -K option is
188: * passed
189: */
1.1 deraadt 190: autologin = -1;
191:
1.5 art 192: while ((ch = getopt(argc, argv, "78DEKLS:X:ab:cde:fFk:l:n:rt:x")) != -1) {
1.1 deraadt 193: switch(ch) {
194: case '8':
195: eight = 3; /* binary output and input */
196: break;
1.5 art 197: case '7':
198: eight = 0;
199: break;
200: case 'D': {
201: /* sometimes we don't want a mangled display */
202: char *p;
203: if((p = getenv("DISPLAY")))
204: env_define("DISPLAY", (unsigned char*)p);
205: break;
206: }
207:
1.1 deraadt 208: case 'E':
209: rlogin = escape = _POSIX_VDISABLE;
210: break;
211: case 'K':
212: #ifdef AUTHENTICATION
213: autologin = 0;
214: #endif
215: break;
216: case 'L':
217: eight |= 2; /* binary output only */
218: break;
219: case 'S':
220: {
221: #ifdef HAS_GETTOS
222: extern int tos;
223:
224: if ((tos = parsetos(optarg, "tcp")) < 0)
225: fprintf(stderr, "%s%s%s%s\n",
226: prompt, ": Bad TOS argument '",
227: optarg,
228: "; will try to use default TOS");
229: #else
230: fprintf(stderr,
231: "%s: Warning: -S ignored, no parsetos() support.\n",
232: prompt);
233: #endif
234: }
235: break;
236: case 'X':
237: #ifdef AUTHENTICATION
238: auth_disable_name(optarg);
239: #endif
240: break;
241: case 'a':
242: autologin = 1;
243: break;
244: case 'c':
245: skiprc = 1;
246: break;
247: case 'd':
248: debug = 1;
249: break;
250: case 'e':
251: set_escape_char(optarg);
252: break;
253: case 'f':
254: #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
1.11 hin 255: if ((forward_flags & OPTS_FORWARD_CREDS) &&
256: !default_forward) {
1.2 niklas 257: fprintf(stderr,
1.1 deraadt 258: "%s: Only one of -f and -F allowed.\n",
259: prompt);
260: usage();
261: }
262: forward_flags |= OPTS_FORWARD_CREDS;
263: #else
264: fprintf(stderr,
1.2 niklas 265: "%s: Warning: -f ignored, no Kerberos V5 support.\n",
1.1 deraadt 266: prompt);
267: #endif
268: break;
269: case 'F':
270: #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
1.11 hin 271: if ((forward_flags & OPTS_FORWARD_CREDS) &&
272: !default_forward) {
1.2 niklas 273: fprintf(stderr,
1.1 deraadt 274: "%s: Only one of -f and -F allowed.\n",
275: prompt);
276: usage();
277: }
278: forward_flags |= OPTS_FORWARD_CREDS;
279: forward_flags |= OPTS_FORWARDABLE_CREDS;
280: #else
281: fprintf(stderr,
1.2 niklas 282: "%s: Warning: -F ignored, no Kerberos V5 support.\n",
1.1 deraadt 283: prompt);
284: #endif
285: break;
286: case 'k':
287: #if defined(AUTHENTICATION) && defined(KRB4)
288: {
1.5 art 289: extern char *dest_realm, dst_realm_buf[];
290: extern int dst_realm_sz;
1.1 deraadt 291: dest_realm = dst_realm_buf;
292: (void)strncpy(dest_realm, optarg, dst_realm_sz);
293: }
294: #else
295: fprintf(stderr,
296: "%s: Warning: -k ignored, no Kerberos V4 support.\n",
297: prompt);
298: #endif
299: break;
300: case 'l':
1.6 art 301: autologin = -1;
1.1 deraadt 302: user = optarg;
303: break;
1.3 niklas 304: case 'b':
305: alias = optarg;
306: break;
1.1 deraadt 307: case 'n':
308: #if defined(TN3270) && defined(unix)
309: /* distinguish between "-n oasynch" and "-noasynch" */
310: if (argv[optind - 1][0] == '-' && argv[optind - 1][1]
311: == 'n' && argv[optind - 1][2] == 'o') {
312: if (!strcmp(optarg, "oasynch")) {
313: noasynchtty = 1;
314: noasynchnet = 1;
315: } else if (!strcmp(optarg, "oasynchtty"))
316: noasynchtty = 1;
317: else if (!strcmp(optarg, "oasynchnet"))
318: noasynchnet = 1;
319: } else
320: #endif /* defined(TN3270) && defined(unix) */
321: SetNetTrace(optarg);
322: break;
323: case 'r':
324: rlogin = '~';
325: break;
326: case 't':
327: #if defined(TN3270) && defined(unix)
1.10 aaron 328: (void)strlcpy(tline, optarg, sizeof tline);
1.1 deraadt 329: transcom = tline;
330: #else
331: fprintf(stderr,
332: "%s: Warning: -t ignored, no TN3270 support.\n",
333: prompt);
334: #endif
335: break;
336: case 'x':
1.5 art 337: #ifdef ENCRYPTION
338: encrypt_auto(1);
339: decrypt_auto(1);
340: EncryptVerbose(1);
341: #else
1.1 deraadt 342: fprintf(stderr,
343: "%s: Warning: -x ignored, no ENCRYPT support.\n",
344: prompt);
1.5 art 345: #endif
1.1 deraadt 346: break;
347: case '?':
348: default:
349: usage();
350: /* NOTREACHED */
351: }
352: }
1.5 art 353:
1.11 hin 354: if (autologin == -1) {
1.6 art 355: #if defined(AUTHENTICATION)
1.12 ! hin 356: if(check_krb4_tickets() || check_krb5_tickets())
1.11 hin 357: autologin = 1;
1.5 art 358: #endif
359: #if defined(ENCRYPTION)
1.11 hin 360: encrypt_auto(1);
361: decrypt_auto(1);
1.5 art 362: #endif
363: }
1.11 hin 364:
1.1 deraadt 365: if (autologin == -1)
366: autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1;
367:
368: argc -= optind;
369: argv += optind;
370:
371: if (argc) {
372: char *args[7], **argp = args;
373:
374: if (argc > 2)
375: usage();
376: *argp++ = prompt;
377: if (user) {
378: *argp++ = "-l";
379: *argp++ = user;
1.3 niklas 380: }
381: if (alias) {
382: *argp++ = "-b";
383: *argp++ = alias;
1.1 deraadt 384: }
385: *argp++ = argv[0]; /* host */
386: if (argc > 1)
387: *argp++ = argv[1]; /* port */
388: *argp = 0;
389:
390: if (setjmp(toplevel) != 0)
391: Exit(0);
392: if (tn(argp - args, args) == 1)
393: return (0);
394: else
395: return (1);
396: }
397: (void)setjmp(toplevel);
398: for (;;) {
399: #ifdef TN3270
400: if (shell_active)
401: shell_continue();
402: else
403: #endif
404: command(1, 0, 0);
405: }
1.7 art 406: return 0;
1.1 deraadt 407: }