main.c revision 1.24
1 /* $NetBSD: main.c,v 1.24 2006/02/02 19:33:12 he 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1988, 1990, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 5/30/95"; 41 #else 42 __RCSID("$NetBSD: main.c,v 1.24 2006/02/02 19:33:12 he Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/types.h> 47 #include <sys/socket.h> 48 49 #include <unistd.h> 50 51 #include "ring.h" 52 #include "externs.h" 53 #include "defines.h" 54 #ifdef AUTHENTICATION 55 #include <libtelnet/auth.h> 56 #endif 57 #ifdef ENCRYPTION 58 #include <libtelnet/encrypt.h> 59 #endif 60 61 /* These values need to be the same as defined in libtelnet/kerberos5.c */ 62 /* Either define them in both places, or put in some common header file. */ 63 #define OPTS_FORWARD_CREDS 0x00000002 64 #define OPTS_FORWARDABLE_CREDS 0x00000001 65 66 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 67 char *ipsec_policy_in = NULL; 68 char *ipsec_policy_out = NULL; 69 #endif 70 71 int family = AF_UNSPEC; 72 73 int main(int, char *[]); 74 75 /* 76 * Initialize variables. 77 */ 78 void 79 tninit(void) 80 { 81 init_terminal(); 82 83 init_network(); 84 85 init_telnet(); 86 87 init_sys(); 88 89 #ifdef TN3270 90 init_3270(); 91 #endif 92 } 93 94 void 95 usage() 96 { 97 fprintf(stderr, "usage: %s %s%s%s%s\n", 98 prompt, 99 #ifdef AUTHENTICATION 100 "[-4] [-6] [-8] [-E] [-K] [-L] [-N] [-S tos] [-X atype] [-a] [-c]", 101 "\n\t[-d] [-e char] [-k realm] [-l user] [-f/-F] [-n tracefile] ", 102 #else 103 "[-4] [-6] [-8] [-E] [-L] [-N] [-S tos] [-a] [-c] [-d] [-e char]", 104 "\n\t[-l user] [-n tracefile] ", 105 #endif 106 #ifdef TN3270 107 # ifdef AUTHENTICATION 108 "[-noasynch] [-noasynctty]\n\t[-noasyncnet] [-r] [-t transcom] ", 109 # else 110 "[-noasynch] [-noasynctty] [-noasyncnet] [-r]\n\t[-t transcom]", 111 # endif 112 #else 113 "[-r] ", 114 #endif 115 #ifdef ENCRYPTION 116 "[-x] " 117 #endif 118 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 119 "\n\t[-P policy] [host-name [port]]" 120 #else 121 "\n\t[host-name [port]]" 122 #endif 123 ); 124 exit(1); 125 } 126 127 /* 128 * main. Parse arguments, invoke the protocol or command parser. 129 */ 130 131 132 int 133 main(int argc, char *argv[]) 134 { 135 extern char *optarg; 136 extern int optind; 137 int ch; 138 char *user; 139 #ifdef FORWARD 140 extern int forward_flags; 141 #endif /* FORWARD */ 142 143 tninit(); /* Clear out things */ 144 145 TerminalSaveState(); 146 147 if ((prompt = strrchr(argv[0], '/')) != NULL) 148 ++prompt; 149 else 150 prompt = argv[0]; 151 152 user = NULL; 153 154 rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE; 155 autologin = -1; 156 157 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 158 #define IPSECOPT "P:" 159 #else 160 #define IPSECOPT 161 #endif 162 while ((ch = getopt(argc, argv, "468EKLNS:X:acde:fFk:l:n:rt:x" 163 IPSECOPT)) != -1) { 164 #undef IPSECOPT 165 switch(ch) { 166 case '4': 167 family = AF_INET; 168 break; 169 case '6': 170 family = AF_INET6; 171 break; 172 case '8': 173 eight = 3; /* binary output and input */ 174 break; 175 case 'E': 176 rlogin = escape = _POSIX_VDISABLE; 177 break; 178 case 'K': 179 #ifdef AUTHENTICATION 180 autologin = 0; 181 #endif 182 break; 183 case 'L': 184 eight |= 2; /* binary output only */ 185 break; 186 case 'N': 187 doaddrlookup = 0; 188 break; 189 case 'S': 190 { 191 fprintf(stderr, 192 "%s: Warning: -S ignored, no parsetos() support.\n", 193 prompt); 194 } 195 break; 196 case 'X': 197 #ifdef AUTHENTICATION 198 auth_disable_name(optarg); 199 #endif 200 break; 201 case 'a': 202 autologin = 1; 203 break; 204 case 'c': 205 skiprc = 1; 206 break; 207 case 'd': 208 telnet_debug = 1; 209 break; 210 case 'e': 211 set_escape_char(optarg); 212 break; 213 case 'f': 214 #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD) 215 if (forward_flags & OPTS_FORWARD_CREDS) { 216 fprintf(stderr, 217 "%s: Only one of -f and -F allowed.\n", 218 prompt); 219 usage(); 220 } 221 forward_flags |= OPTS_FORWARD_CREDS; 222 #else 223 fprintf(stderr, 224 "%s: Warning: -f ignored, no Kerberos V5 support.\n", 225 prompt); 226 #endif 227 break; 228 case 'F': 229 #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD) 230 if (forward_flags & OPTS_FORWARD_CREDS) { 231 fprintf(stderr, 232 "%s: Only one of -f and -F allowed.\n", 233 prompt); 234 usage(); 235 } 236 forward_flags |= OPTS_FORWARD_CREDS; 237 forward_flags |= OPTS_FORWARDABLE_CREDS; 238 #else 239 fprintf(stderr, 240 "%s: Warning: -F ignored, no Kerberos V5 support.\n", 241 prompt); 242 #endif 243 break; 244 case 'k': 245 #if defined(AUTHENTICATION) && defined(KRB4) 246 { 247 extern char *dest_realm, dst_realm_buf[], dst_realm_sz; 248 dest_realm = dst_realm_buf; 249 (void)strlcpy(dest_realm, optarg, dst_realm_sz); 250 } 251 #else 252 fprintf(stderr, 253 "%s: Warning: -k ignored, no Kerberos V4 support.\n", 254 prompt); 255 #endif 256 break; 257 case 'l': 258 if(autologin == 0) { 259 autologin = -1; 260 } 261 user = optarg; 262 break; 263 case 'n': 264 #ifdef TN3270 265 /* distinguish between "-n oasynch" and "-noasynch" */ 266 if (argv[optind - 1][0] == '-' && argv[optind - 1][1] 267 == 'n' && argv[optind - 1][2] == 'o') { 268 if (!strcmp(optarg, "oasynch")) { 269 noasynchtty = 1; 270 noasynchnet = 1; 271 } else if (!strcmp(optarg, "oasynchtty")) 272 noasynchtty = 1; 273 else if (!strcmp(optarg, "oasynchnet")) 274 noasynchnet = 1; 275 } else 276 #endif /* defined(TN3270) */ 277 SetNetTrace(optarg); 278 break; 279 case 'r': 280 rlogin = '~'; 281 break; 282 case 't': 283 #ifdef TN3270 284 (void)strlcpy(tline, optarg, sizeof(tline)); 285 transcom = tline; 286 #else 287 fprintf(stderr, 288 "%s: Warning: -t ignored, no TN3270 support.\n", 289 prompt); 290 #endif 291 break; 292 case 'x': 293 #ifdef ENCRYPTION 294 encrypt_auto(1); 295 decrypt_auto(1); 296 #else /* ENCRYPTION */ 297 fprintf(stderr, 298 "%s: Warning: -x ignored, no ENCRYPT support.\n", 299 prompt); 300 #endif /* ENCRYPTION */ 301 break; 302 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 303 case 'P': 304 if (!strncmp("in", optarg, 2)) 305 ipsec_policy_in = strdup(optarg); 306 else if (!strncmp("out", optarg, 3)) 307 ipsec_policy_out = strdup(optarg); 308 else 309 usage(); 310 break; 311 #endif 312 case '?': 313 default: 314 usage(); 315 /* NOTREACHED */ 316 } 317 } 318 319 if (autologin == -1) { /* esc (at) magic.fi; force */ 320 #if defined(AUTHENTICATION) 321 autologin = 1; 322 #endif 323 #if defined(ENCRYPTION) 324 encrypt_auto(1); 325 decrypt_auto(1); 326 #endif 327 } 328 329 if (autologin == -1) 330 autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1; 331 332 argc -= optind; 333 argv += optind; 334 335 if (argc) { 336 char *args[7], **argp = args; 337 #ifdef __GNUC__ 338 (void) &argp; /* avoid longjmp clobbering */ 339 #endif 340 341 if (argc > 2) 342 usage(); 343 *argp++ = prompt; 344 if (user) { 345 *argp++ = "-l"; 346 *argp++ = user; 347 } 348 *argp++ = argv[0]; /* host */ 349 if (argc > 1) 350 *argp++ = argv[1]; /* port */ 351 *argp = 0; 352 353 if (setjmp(toplevel) != 0) 354 Exit(0); 355 if (tn(argp - args, args) == 1) 356 return (0); 357 else 358 return (1); 359 } 360 (void)setjmp(toplevel); 361 for (;;) { 362 #ifdef TN3270 363 if (shell_active) 364 shell_continue(); 365 else 366 #endif 367 command(1, 0, 0); 368 } 369 } 370
Indexes created Wed Sep 24 05:09:52 GMT 2025