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1.10 ! aaron 1: /* $OpenBSD: main.c,v 1.9 1999/12/15 11:16:31 deraadt 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:
1.5 art 50: #if KRB5
1.1 deraadt 51: #define FORWARD
52: #endif
53:
1.6 art 54: #ifdef KRB4
55: #include <kerberosIV/krb.h>
56: #endif
57:
1.1 deraadt 58: /*
59: * Initialize variables.
60: */
61: void
62: tninit()
63: {
64: init_terminal();
65:
66: init_network();
1.2 niklas 67:
1.1 deraadt 68: init_telnet();
69:
70: init_sys();
71:
72: #if defined(TN3270)
73: init_3270();
74: #endif
75: }
76:
77: void
78: usage()
79: {
80: fprintf(stderr, "Usage: %s %s%s%s%s\n",
81: prompt,
82: #ifdef AUTHENTICATION
1.2 niklas 83: "[-8] [-E] [-K] [-L] [-S tos] [-X atype] [-a] [-c] [-d] [-e char]",
1.9 deraadt 84: "\n\t[-k realm] [-l user] [-f/-F] [-n tracefile] [-b hostalias ] ",
1.1 deraadt 85: #else
1.2 niklas 86: "[-8] [-E] [-L] [-S tos] [-a] [-c] [-d] [-e char] [-l user]",
1.9 deraadt 87: "\n\t[-n tracefile] [-b hostalias ] ",
1.1 deraadt 88: #endif
89: #if defined(TN3270) && defined(unix)
90: # ifdef AUTHENTICATION
1.2 niklas 91: "[-noasynch] [-noasynctty]\n\t[-noasyncnet] [-r] [-t transcom] ",
1.1 deraadt 92: # else
1.2 niklas 93: "[-noasynch] [-noasynctty] [-noasyncnet] [-r]\n\t[-t transcom]",
1.1 deraadt 94: # endif
95: #else
96: "[-r] ",
97: #endif
1.9 deraadt 98: "\n\t"
1.5 art 99: #ifdef ENCRYPTION
1.9 deraadt 100: "[-x] "
1.5 art 101: #endif
1.9 deraadt 102: "[host-name [port]]");
1.1 deraadt 103: exit(1);
104: }
105:
106: /*
107: * main. Parse arguments, invoke the protocol or command parser.
108: */
109:
1.7 art 110: int
1.1 deraadt 111: main(argc, argv)
112: int argc;
113: char *argv[];
114: {
115: extern char *optarg;
116: extern int optind;
117: int ch;
1.5 art 118: char *user, *alias;
1.1 deraadt 119: #ifdef FORWARD
120: extern int forward_flags;
121: #endif /* FORWARD */
122:
123: tninit(); /* Clear out things */
124:
125: TerminalSaveState();
126:
1.5 art 127: if ((prompt = strrchr(argv[0], '/')))
1.1 deraadt 128: ++prompt;
129: else
130: prompt = argv[0];
131:
1.3 niklas 132: user = alias = NULL;
1.1 deraadt 133:
134: rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE;
1.5 art 135:
136: /*
137: * if AUTHENTICATION and ENCRYPTION is set autologin will be
138: * set to true after the getopt switch; unless the -K option is
139: * passed
140: */
1.1 deraadt 141: autologin = -1;
142:
1.5 art 143: while ((ch = getopt(argc, argv, "78DEKLS:X:ab:cde:fFk:l:n:rt:x")) != -1) {
1.1 deraadt 144: switch(ch) {
145: case '8':
146: eight = 3; /* binary output and input */
147: break;
1.5 art 148: case '7':
149: eight = 0;
150: break;
151: case 'D': {
152: /* sometimes we don't want a mangled display */
153: char *p;
154: if((p = getenv("DISPLAY")))
155: env_define("DISPLAY", (unsigned char*)p);
156: break;
157: }
158:
1.1 deraadt 159: case 'E':
160: rlogin = escape = _POSIX_VDISABLE;
161: break;
162: case 'K':
163: #ifdef AUTHENTICATION
164: autologin = 0;
165: #endif
166: break;
167: case 'L':
168: eight |= 2; /* binary output only */
169: break;
170: case 'S':
171: {
172: #ifdef HAS_GETTOS
173: extern int tos;
174:
175: if ((tos = parsetos(optarg, "tcp")) < 0)
176: fprintf(stderr, "%s%s%s%s\n",
177: prompt, ": Bad TOS argument '",
178: optarg,
179: "; will try to use default TOS");
180: #else
181: fprintf(stderr,
182: "%s: Warning: -S ignored, no parsetos() support.\n",
183: prompt);
184: #endif
185: }
186: break;
187: case 'X':
188: #ifdef AUTHENTICATION
189: auth_disable_name(optarg);
190: #endif
191: break;
192: case 'a':
193: autologin = 1;
194: break;
195: case 'c':
196: skiprc = 1;
197: break;
198: case 'd':
199: debug = 1;
200: break;
201: case 'e':
202: set_escape_char(optarg);
203: break;
204: case 'f':
205: #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
206: if (forward_flags & OPTS_FORWARD_CREDS) {
1.2 niklas 207: fprintf(stderr,
1.1 deraadt 208: "%s: Only one of -f and -F allowed.\n",
209: prompt);
210: usage();
211: }
212: forward_flags |= OPTS_FORWARD_CREDS;
213: #else
214: fprintf(stderr,
1.2 niklas 215: "%s: Warning: -f ignored, no Kerberos V5 support.\n",
1.1 deraadt 216: prompt);
217: #endif
218: break;
219: case 'F':
220: #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD)
221: if (forward_flags & OPTS_FORWARD_CREDS) {
1.2 niklas 222: fprintf(stderr,
1.1 deraadt 223: "%s: Only one of -f and -F allowed.\n",
224: prompt);
225: usage();
226: }
227: forward_flags |= OPTS_FORWARD_CREDS;
228: forward_flags |= OPTS_FORWARDABLE_CREDS;
229: #else
230: fprintf(stderr,
1.2 niklas 231: "%s: Warning: -F ignored, no Kerberos V5 support.\n",
1.1 deraadt 232: prompt);
233: #endif
234: break;
235: case 'k':
236: #if defined(AUTHENTICATION) && defined(KRB4)
237: {
1.5 art 238: extern char *dest_realm, dst_realm_buf[];
239: extern int dst_realm_sz;
1.1 deraadt 240: dest_realm = dst_realm_buf;
241: (void)strncpy(dest_realm, optarg, dst_realm_sz);
242: }
243: #else
244: fprintf(stderr,
245: "%s: Warning: -k ignored, no Kerberos V4 support.\n",
246: prompt);
247: #endif
248: break;
249: case 'l':
1.6 art 250: autologin = -1;
1.1 deraadt 251: user = optarg;
252: break;
1.3 niklas 253: case 'b':
254: alias = optarg;
255: break;
1.1 deraadt 256: case 'n':
257: #if defined(TN3270) && defined(unix)
258: /* distinguish between "-n oasynch" and "-noasynch" */
259: if (argv[optind - 1][0] == '-' && argv[optind - 1][1]
260: == 'n' && argv[optind - 1][2] == 'o') {
261: if (!strcmp(optarg, "oasynch")) {
262: noasynchtty = 1;
263: noasynchnet = 1;
264: } else if (!strcmp(optarg, "oasynchtty"))
265: noasynchtty = 1;
266: else if (!strcmp(optarg, "oasynchnet"))
267: noasynchnet = 1;
268: } else
269: #endif /* defined(TN3270) && defined(unix) */
270: SetNetTrace(optarg);
271: break;
272: case 'r':
273: rlogin = '~';
274: break;
275: case 't':
276: #if defined(TN3270) && defined(unix)
1.10 ! aaron 277: (void)strlcpy(tline, optarg, sizeof tline);
1.1 deraadt 278: transcom = tline;
279: #else
280: fprintf(stderr,
281: "%s: Warning: -t ignored, no TN3270 support.\n",
282: prompt);
283: #endif
284: break;
285: case 'x':
1.5 art 286: #ifdef ENCRYPTION
287: encrypt_auto(1);
288: decrypt_auto(1);
289: EncryptVerbose(1);
290: #else
1.1 deraadt 291: fprintf(stderr,
292: "%s: Warning: -x ignored, no ENCRYPT support.\n",
293: prompt);
1.5 art 294: #endif
1.1 deraadt 295: break;
296: case '?':
297: default:
298: usage();
299: /* NOTREACHED */
300: }
301: }
1.5 art 302:
1.6 art 303: #ifdef KRB4
304: {
305: char realm[REALM_SZ];
306:
307: if (krb_get_lrealm(realm, 0) != KSUCCESS) {
308: #if defined(AUTHENTICATION)
309: auth_disable_name("KERBEROS_V4");
310: #endif
311: } else if (autologin == -1) {
1.5 art 312: #if defined(AUTHENTICATION)
1.6 art 313: autologin = 1;
1.5 art 314: #endif
315: #if defined(ENCRYPTION)
1.6 art 316: encrypt_auto(1);
317: decrypt_auto(1);
1.5 art 318: #endif
1.6 art 319: }
1.5 art 320: }
1.6 art 321: #endif /* KRB4 */
1.5 art 322:
1.1 deraadt 323: if (autologin == -1)
324: autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1;
325:
326: argc -= optind;
327: argv += optind;
328:
329: if (argc) {
330: char *args[7], **argp = args;
331:
332: if (argc > 2)
333: usage();
334: *argp++ = prompt;
335: if (user) {
336: *argp++ = "-l";
337: *argp++ = user;
1.3 niklas 338: }
339: if (alias) {
340: *argp++ = "-b";
341: *argp++ = alias;
1.1 deraadt 342: }
343: *argp++ = argv[0]; /* host */
344: if (argc > 1)
345: *argp++ = argv[1]; /* port */
346: *argp = 0;
347:
348: if (setjmp(toplevel) != 0)
349: Exit(0);
350: if (tn(argp - args, args) == 1)
351: return (0);
352: else
353: return (1);
354: }
355: (void)setjmp(toplevel);
356: for (;;) {
357: #ifdef TN3270
358: if (shell_active)
359: shell_continue();
360: else
361: #endif
362: command(1, 0, 0);
363: }
1.7 art 364: return 0;
1.1 deraadt 365: }