main.c revision 1.16
1 /* $NetBSD: main.c,v 1.16 2002/06/14 00:30:56 wiz Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1988, 1990, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 5/30/95"; 45 #else 46 __RCSID("$NetBSD: main.c,v 1.16 2002/06/14 00:30:56 wiz Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/types.h> 51 52 #include <unistd.h> 53 54 #include "ring.h" 55 #include "externs.h" 56 #include "defines.h" 57 #ifdef AUTHENTICATION 58 #include <libtelnet/auth.h> 59 #endif 60 #ifdef ENCRYPTION 61 #include <libtelnet/encrypt.h> 62 #endif 63 64 /* These values need to be the same as defined in libtelnet/kerberos5.c */ 65 /* Either define them in both places, or put in some common header file. */ 66 #define OPTS_FORWARD_CREDS 0x00000002 67 #define OPTS_FORWARDABLE_CREDS 0x00000001 68 69 #if 0 70 #define FORWARD 71 #endif 72 73 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 74 char *ipsec_policy_in = NULL; 75 char *ipsec_policy_out = NULL; 76 #endif 77 78 int main(int, char *[]); 79 80 /* 81 * Initialize variables. 82 */ 83 void 84 tninit() 85 { 86 init_terminal(); 87 88 init_network(); 89 90 init_telnet(); 91 92 init_sys(); 93 94 #if defined(TN3270) 95 init_3270(); 96 #endif 97 } 98 99 void 100 usage() 101 { 102 fprintf(stderr, "Usage: %s %s%s%s%s\n", 103 prompt, 104 #ifdef AUTHENTICATION 105 "[-8] [-E] [-K] [-L] [-N] [-S tos] [-X atype] [-a] [-c] [-d]", 106 "\n\t[-e char] [-k realm] [-l user] [-f/-F] [-n tracefile] ", 107 #else 108 "[-8] [-E] [-L] [-N] [-S tos] [-a] [-c] [-d] [-e char] [-l user]", 109 "\n\t[-n tracefile]", 110 #endif 111 #if defined(TN3270) && defined(unix) 112 # ifdef AUTHENTICATION 113 "[-noasynch] [-noasynctty]\n\t[-noasyncnet] [-r] [-t transcom] ", 114 # else 115 "[-noasynch] [-noasynctty] [-noasyncnet] [-r]\n\t[-t transcom]", 116 # endif 117 #else 118 "[-r] ", 119 #endif 120 #ifdef ENCRYPTION 121 "[-x] " 122 #endif 123 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 124 "[-P policy] [host-name [port]]" 125 #else 126 "[host-name [port]]" 127 #endif 128 ); 129 exit(1); 130 } 131 132 /* 133 * main. Parse arguments, invoke the protocol or command parser. 134 */ 135 136 137 int 138 main(argc, argv) 139 int argc; 140 char *argv[]; 141 { 142 extern char *optarg; 143 extern int optind; 144 int ch; 145 char *user; 146 #ifdef FORWARD 147 extern int forward_flags; 148 #endif /* FORWARD */ 149 150 tninit(); /* Clear out things */ 151 152 TerminalSaveState(); 153 154 if ((prompt = strrchr(argv[0], '/')) != NULL) 155 ++prompt; 156 else 157 prompt = argv[0]; 158 159 user = NULL; 160 161 rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE; 162 autologin = -1; 163 164 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 165 #define IPSECOPT "P:" 166 #else 167 #define IPSECOPT 168 #endif 169 while ((ch = getopt(argc, argv, "8EKLNS:X:acde:fFk:l:n:rt:x" 170 IPSECOPT)) != -1) { 171 #undef IPSECOPT 172 switch(ch) { 173 case '8': 174 eight = 3; /* binary output and input */ 175 break; 176 case 'E': 177 rlogin = escape = _POSIX_VDISABLE; 178 break; 179 case 'K': 180 #ifdef AUTHENTICATION 181 autologin = 0; 182 #endif 183 break; 184 case 'L': 185 eight |= 2; /* binary output only */ 186 break; 187 case 'N': 188 doaddrlookup = 0; 189 break; 190 case 'S': 191 { 192 #ifdef HAS_GETTOS 193 extern int tos; 194 195 if ((tos = parsetos(optarg, "tcp")) < 0) 196 fprintf(stderr, "%s%s%s%s\n", 197 prompt, ": Bad TOS argument '", 198 optarg, 199 "; will try to use default TOS"); 200 #else 201 fprintf(stderr, 202 "%s: Warning: -S ignored, no parsetos() support.\n", 203 prompt); 204 #endif 205 } 206 break; 207 case 'X': 208 #ifdef AUTHENTICATION 209 auth_disable_name(optarg); 210 #endif 211 break; 212 case 'a': 213 autologin = 1; 214 break; 215 case 'c': 216 skiprc = 1; 217 break; 218 case 'd': 219 debug = 1; 220 break; 221 case 'e': 222 set_escape_char(optarg); 223 break; 224 case 'f': 225 #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD) 226 if (forward_flags & OPTS_FORWARD_CREDS) { 227 fprintf(stderr, 228 "%s: Only one of -f and -F allowed.\n", 229 prompt); 230 usage(); 231 } 232 forward_flags |= OPTS_FORWARD_CREDS; 233 #else 234 fprintf(stderr, 235 "%s: Warning: -f ignored, no Kerberos V5 support.\n", 236 prompt); 237 #endif 238 break; 239 case 'F': 240 #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD) 241 if (forward_flags & OPTS_FORWARD_CREDS) { 242 fprintf(stderr, 243 "%s: Only one of -f and -F allowed.\n", 244 prompt); 245 usage(); 246 } 247 forward_flags |= OPTS_FORWARD_CREDS; 248 forward_flags |= OPTS_FORWARDABLE_CREDS; 249 #else 250 fprintf(stderr, 251 "%s: Warning: -F ignored, no Kerberos V5 support.\n", 252 prompt); 253 #endif 254 break; 255 case 'k': 256 #if defined(AUTHENTICATION) && defined(KRB4) 257 { 258 extern char *dest_realm, dst_realm_buf[], dst_realm_sz; 259 dest_realm = dst_realm_buf; 260 (void)strncpy(dest_realm, optarg, dst_realm_sz); 261 } 262 #else 263 fprintf(stderr, 264 "%s: Warning: -k ignored, no Kerberos V4 support.\n", 265 prompt); 266 #endif 267 break; 268 case 'l': 269 if(autologin == 0) { 270 autologin = -1; 271 } 272 user = optarg; 273 break; 274 case 'n': 275 #if defined(TN3270) && defined(unix) 276 /* distinguish between "-n oasynch" and "-noasynch" */ 277 if (argv[optind - 1][0] == '-' && argv[optind - 1][1] 278 == 'n' && argv[optind - 1][2] == 'o') { 279 if (!strcmp(optarg, "oasynch")) { 280 noasynchtty = 1; 281 noasynchnet = 1; 282 } else if (!strcmp(optarg, "oasynchtty")) 283 noasynchtty = 1; 284 else if (!strcmp(optarg, "oasynchnet")) 285 noasynchnet = 1; 286 } else 287 #endif /* defined(TN3270) && defined(unix) */ 288 SetNetTrace(optarg); 289 break; 290 case 'r': 291 rlogin = '~'; 292 break; 293 case 't': 294 #if defined(TN3270) && defined(unix) 295 (void)strlcpy(tline, optarg, sizeof(tline)); 296 transcom = tline; 297 #else 298 fprintf(stderr, 299 "%s: Warning: -t ignored, no TN3270 support.\n", 300 prompt); 301 #endif 302 break; 303 case 'x': 304 #ifdef ENCRYPTION 305 encrypt_auto(1); 306 decrypt_auto(1); 307 #else /* ENCRYPTION */ 308 fprintf(stderr, 309 "%s: Warning: -x ignored, no ENCRYPT support.\n", 310 prompt); 311 #endif /* ENCRYPTION */ 312 break; 313 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 314 case 'P': 315 if (!strncmp("in", optarg, 2)) 316 ipsec_policy_in = strdup(optarg); 317 else if (!strncmp("out", optarg, 3)) 318 ipsec_policy_out = strdup(optarg); 319 else 320 usage(); 321 break; 322 #endif 323 case '?': 324 default: 325 usage(); 326 /* NOTREACHED */ 327 } 328 } 329 330 if (autologin == -1) { /* esc (at) magic.fi; force */ 331 #if defined(AUTHENTICATION) 332 autologin = 1; 333 #endif 334 #if defined(ENCRYPTION) 335 encrypt_auto(1); 336 decrypt_auto(1); 337 #endif 338 } 339 340 if (autologin == -1) 341 autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1; 342 343 argc -= optind; 344 argv += optind; 345 346 if (argc) { 347 char *args[7], **argp = args; 348 #ifdef __GNUC__ 349 (void) &argp; /* avoid longjmp clobbering */ 350 #endif 351 352 if (argc > 2) 353 usage(); 354 *argp++ = prompt; 355 if (user) { 356 *argp++ = "-l"; 357 *argp++ = user; 358 } 359 *argp++ = argv[0]; /* host */ 360 if (argc > 1) 361 *argp++ = argv[1]; /* port */ 362 *argp = 0; 363 364 if (setjmp(toplevel) != 0) 365 Exit(0); 366 if (tn(argp - args, args) == 1) 367 return (0); 368 else 369 return (1); 370 } 371 (void)setjmp(toplevel); 372 for (;;) { 373 #ifdef TN3270 374 if (shell_active) 375 shell_continue(); 376 else 377 #endif 378 command(1, 0, 0); 379 } 380 } 381
Indexes created Wed Sep 24 05:09:52 GMT 2025