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1.13 ! hin 1: /* $OpenBSD: main.c,v 1.12 2001/11/03 00:07:53 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);
1.13 ! hin 143: wantencryption = 1;
1.11 hin 144: EncryptVerbose(1);
145: }
146: #endif
147:
148: krb5_free_context(context);
149: }
150: #endif
151:
1.1 deraadt 152: /*
153: * main. Parse arguments, invoke the protocol or command parser.
154: */
155:
1.7 art 156: int
1.1 deraadt 157: main(argc, argv)
158: int argc;
159: char *argv[];
160: {
161: extern char *optarg;
162: extern int optind;
163: int ch;
1.5 art 164: char *user, *alias;
1.1 deraadt 165: #ifdef FORWARD
166: extern int forward_flags;
167: #endif /* FORWARD */
168:
1.11 hin 169: #ifdef KRB5
170: krb5_init();
171: #endif
172:
1.1 deraadt 173: tninit(); /* Clear out things */
174:
175: TerminalSaveState();
176:
1.5 art 177: if ((prompt = strrchr(argv[0], '/')))
1.1 deraadt 178: ++prompt;
179: else
180: prompt = argv[0];
181:
1.3 niklas 182: user = alias = NULL;
1.1 deraadt 183:
184: rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE;
1.5 art 185:
186: /*
187: * if AUTHENTICATION and ENCRYPTION is set autologin will be
188: * set to true after the getopt switch; unless the -K option is
189: * passed
190: */
1.1 deraadt 191: autologin = -1;
192:
1.5 art 193: while ((ch = getopt(argc, argv, "78DEKLS:X:ab:cde:fFk:l:n:rt:x")) != -1) {
1.1 deraadt 194: switch(ch) {
195: case '8':
196: eight = 3; /* binary output and input */
197: break;
1.5 art 198: case '7':
199: eight = 0;
200: break;
201: case 'D': {
202: /* sometimes we don't want a mangled display */
203: char *p;
204: if((p = getenv("DISPLAY")))
205: env_define("DISPLAY", (unsigned char*)p);
206: break;
207: }
208:
1.1 deraadt 209: case 'E':
210: rlogin = escape = _POSIX_VDISABLE;
211: break;
212: case 'K':
213: #ifdef AUTHENTICATION
214: autologin = 0;
215: #endif
216: break;
217: case 'L':
218: eight |= 2; /* binary output only */
219: break;
220: case 'S':
221: {
222: #ifdef HAS_GETTOS
223: extern int tos;
224:
225: if ((tos = parsetos(optarg, "tcp")) < 0)
226: fprintf(stderr, "%s%s%s%s\n",
227: prompt, ": Bad TOS argument '",
228: optarg,
229: "; will try to use default TOS");
230: #else
231: fprintf(stderr,
232: "%s: Warning: -S ignored, no parsetos() support.\n",
233: prompt);
234: #endif
235: }
236: break;
237: case 'X':
238: #ifdef AUTHENTICATION
239: auth_disable_name(optarg);
240: #endif
241: break;
242: case 'a':
243: autologin = 1;
244: break;
245: case 'c':
246: skiprc = 1;
247: break;
248: case 'd':
249: debug = 1;
250: break;
251: case 'e':
252: set_escape_char(optarg);
253: break;
254: case 'f':
255: #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
1.11 hin 256: if ((forward_flags & OPTS_FORWARD_CREDS) &&
257: !default_forward) {
1.2 niklas 258: fprintf(stderr,
1.1 deraadt 259: "%s: Only one of -f and -F allowed.\n",
260: prompt);
261: usage();
262: }
263: forward_flags |= OPTS_FORWARD_CREDS;
264: #else
265: fprintf(stderr,
1.2 niklas 266: "%s: Warning: -f ignored, no Kerberos V5 support.\n",
1.1 deraadt 267: prompt);
268: #endif
269: break;
270: case 'F':
271: #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
1.11 hin 272: if ((forward_flags & OPTS_FORWARD_CREDS) &&
273: !default_forward) {
1.2 niklas 274: fprintf(stderr,
1.1 deraadt 275: "%s: Only one of -f and -F allowed.\n",
276: prompt);
277: usage();
278: }
279: forward_flags |= OPTS_FORWARD_CREDS;
280: forward_flags |= OPTS_FORWARDABLE_CREDS;
281: #else
282: fprintf(stderr,
1.2 niklas 283: "%s: Warning: -F ignored, no Kerberos V5 support.\n",
1.1 deraadt 284: prompt);
285: #endif
286: break;
287: case 'k':
288: #if defined(AUTHENTICATION) && defined(KRB4)
289: {
1.5 art 290: extern char *dest_realm, dst_realm_buf[];
291: extern int dst_realm_sz;
1.1 deraadt 292: dest_realm = dst_realm_buf;
293: (void)strncpy(dest_realm, optarg, dst_realm_sz);
294: }
295: #else
296: fprintf(stderr,
297: "%s: Warning: -k ignored, no Kerberos V4 support.\n",
298: prompt);
299: #endif
300: break;
301: case 'l':
1.6 art 302: autologin = -1;
1.1 deraadt 303: user = optarg;
304: break;
1.3 niklas 305: case 'b':
306: alias = optarg;
307: break;
1.1 deraadt 308: case 'n':
309: #if defined(TN3270) && defined(unix)
310: /* distinguish between "-n oasynch" and "-noasynch" */
311: if (argv[optind - 1][0] == '-' && argv[optind - 1][1]
312: == 'n' && argv[optind - 1][2] == 'o') {
313: if (!strcmp(optarg, "oasynch")) {
314: noasynchtty = 1;
315: noasynchnet = 1;
316: } else if (!strcmp(optarg, "oasynchtty"))
317: noasynchtty = 1;
318: else if (!strcmp(optarg, "oasynchnet"))
319: noasynchnet = 1;
320: } else
321: #endif /* defined(TN3270) && defined(unix) */
322: SetNetTrace(optarg);
323: break;
324: case 'r':
325: rlogin = '~';
326: break;
327: case 't':
328: #if defined(TN3270) && defined(unix)
1.10 aaron 329: (void)strlcpy(tline, optarg, sizeof tline);
1.1 deraadt 330: transcom = tline;
331: #else
332: fprintf(stderr,
333: "%s: Warning: -t ignored, no TN3270 support.\n",
334: prompt);
335: #endif
336: break;
337: case 'x':
1.5 art 338: #ifdef ENCRYPTION
339: encrypt_auto(1);
340: decrypt_auto(1);
1.13 ! hin 341: wantencryption = 1;
1.5 art 342: EncryptVerbose(1);
343: #else
1.1 deraadt 344: fprintf(stderr,
345: "%s: Warning: -x ignored, no ENCRYPT support.\n",
346: prompt);
1.5 art 347: #endif
1.1 deraadt 348: break;
349: case '?':
350: default:
351: usage();
352: /* NOTREACHED */
353: }
354: }
1.5 art 355:
1.11 hin 356: if (autologin == -1) {
1.6 art 357: #if defined(AUTHENTICATION)
1.13 ! hin 358: if(check_krb4_tickets() || check_krb5_tickets())
! 359: autologin = 1;
1.5 art 360: #endif
361: #if defined(ENCRYPTION)
1.11 hin 362: encrypt_auto(1);
363: decrypt_auto(1);
1.5 art 364: #endif
365: }
1.13 ! hin 366:
1.1 deraadt 367: if (autologin == -1)
368: autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1;
369:
370: argc -= optind;
371: argv += optind;
372:
373: if (argc) {
374: char *args[7], **argp = args;
375:
376: if (argc > 2)
377: usage();
378: *argp++ = prompt;
379: if (user) {
380: *argp++ = "-l";
381: *argp++ = user;
1.3 niklas 382: }
383: if (alias) {
384: *argp++ = "-b";
385: *argp++ = alias;
1.1 deraadt 386: }
387: *argp++ = argv[0]; /* host */
388: if (argc > 1)
389: *argp++ = argv[1]; /* port */
390: *argp = 0;
391:
392: if (setjmp(toplevel) != 0)
393: Exit(0);
394: if (tn(argp - args, args) == 1)
395: return (0);
396: else
397: return (1);
398: }
399: (void)setjmp(toplevel);
400: for (;;) {
401: #ifdef TN3270
402: if (shell_active)
403: shell_continue();
404: else
405: #endif
406: command(1, 0, 0);
407: }
1.7 art 408: return 0;
1.1 deraadt 409: }