main.c revision 1.20
1 /* $NetBSD: main.c,v 1.20 2003/07/14 15:56:29 itojun 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 1.20 2003/07/14 15:56:29 itojun Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/types.h> 51 #include <sys/socket.h> 52 53 #include <unistd.h> 54 55 #include "ring.h" 56 #include "externs.h" 57 #include "defines.h" 58 #ifdef AUTHENTICATION 59 #include <libtelnet/auth.h> 60 #endif 61 #ifdef ENCRYPTION 62 #include <libtelnet/encrypt.h> 63 #endif 64 65 /* These values need to be the same as defined in libtelnet/kerberos5.c */ 66 /* Either define them in both places, or put in some common header file. */ 67 #define OPTS_FORWARD_CREDS 0x00000002 68 #define OPTS_FORWARDABLE_CREDS 0x00000001 69 70 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 71 char *ipsec_policy_in = NULL; 72 char *ipsec_policy_out = NULL; 73 #endif 74 75 int family = AF_UNSPEC; 76 77 int main(int, char *[]); 78 79 /* 80 * Initialize variables. 81 */ 82 void 83 tninit(void) 84 { 85 init_terminal(); 86 87 init_network(); 88 89 init_telnet(); 90 91 init_sys(); 92 93 #ifdef TN3270 94 init_3270(); 95 #endif 96 } 97 98 void 99 usage() 100 { 101 fprintf(stderr, "Usage: %s %s%s%s%s\n", 102 prompt, 103 #ifdef AUTHENTICATION 104 "[-4] [-6] [-8] [-E] [-K] [-L] [-N] [-S tos] [-X atype] [-a] [-c] [-d]", 105 "\n\t[-e char] [-k realm] [-l user] [-f/-F] [-n tracefile] ", 106 #else 107 "[-4] [-6] [-8] [-E] [-L] [-N] [-S tos] [-a] [-c] [-d] [-e char] [-l user]", 108 "\n\t[-n tracefile]", 109 #endif 110 #ifdef TN3270 111 # ifdef AUTHENTICATION 112 "[-noasynch] [-noasynctty]\n\t[-noasyncnet] [-r] [-t transcom] ", 113 # else 114 "[-noasynch] [-noasynctty] [-noasyncnet] [-r]\n\t[-t transcom]", 115 # endif 116 #else 117 "[-r] ", 118 #endif 119 #ifdef ENCRYPTION 120 "[-x] " 121 #endif 122 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 123 "[-P policy] [host-name [port]]" 124 #else 125 "[host-name [port]]" 126 #endif 127 ); 128 exit(1); 129 } 130 131 /* 132 * main. Parse arguments, invoke the protocol or command parser. 133 */ 134 135 136 int 137 main(int argc, char *argv[]) 138 { 139 extern char *optarg; 140 extern int optind; 141 int ch; 142 char *user; 143 #ifdef FORWARD 144 extern int forward_flags; 145 #endif /* FORWARD */ 146 147 tninit(); /* Clear out things */ 148 149 TerminalSaveState(); 150 151 if ((prompt = strrchr(argv[0], '/')) != NULL) 152 ++prompt; 153 else 154 prompt = argv[0]; 155 156 user = NULL; 157 158 rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE; 159 autologin = -1; 160 161 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 162 #define IPSECOPT "P:" 163 #else 164 #define IPSECOPT 165 #endif 166 while ((ch = getopt(argc, argv, "468EKLNS:X:acde:fFk:l:n:rt:x" 167 IPSECOPT)) != -1) { 168 #undef IPSECOPT 169 switch(ch) { 170 case '4': 171 family = AF_INET; 172 break; 173 case '6': 174 family = AF_INET6; 175 break; 176 case '8': 177 eight = 3; /* binary output and input */ 178 break; 179 case 'E': 180 rlogin = escape = _POSIX_VDISABLE; 181 break; 182 case 'K': 183 #ifdef AUTHENTICATION 184 autologin = 0; 185 #endif 186 break; 187 case 'L': 188 eight |= 2; /* binary output only */ 189 break; 190 case 'N': 191 doaddrlookup = 0; 192 break; 193 case 'S': 194 { 195 fprintf(stderr, 196 "%s: Warning: -S ignored, no parsetos() support.\n", 197 prompt); 198 } 199 break; 200 case 'X': 201 #ifdef AUTHENTICATION 202 auth_disable_name(optarg); 203 #endif 204 break; 205 case 'a': 206 autologin = 1; 207 break; 208 case 'c': 209 skiprc = 1; 210 break; 211 case 'd': 212 debug = 1; 213 break; 214 case 'e': 215 set_escape_char(optarg); 216 break; 217 case 'f': 218 #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD) 219 if (forward_flags & OPTS_FORWARD_CREDS) { 220 fprintf(stderr, 221 "%s: Only one of -f and -F allowed.\n", 222 prompt); 223 usage(); 224 } 225 forward_flags |= OPTS_FORWARD_CREDS; 226 #else 227 fprintf(stderr, 228 "%s: Warning: -f ignored, no Kerberos V5 support.\n", 229 prompt); 230 #endif 231 break; 232 case 'F': 233 #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD) 234 if (forward_flags & OPTS_FORWARD_CREDS) { 235 fprintf(stderr, 236 "%s: Only one of -f and -F allowed.\n", 237 prompt); 238 usage(); 239 } 240 forward_flags |= OPTS_FORWARD_CREDS; 241 forward_flags |= OPTS_FORWARDABLE_CREDS; 242 #else 243 fprintf(stderr, 244 "%s: Warning: -F ignored, no Kerberos V5 support.\n", 245 prompt); 246 #endif 247 break; 248 case 'k': 249 #if defined(AUTHENTICATION) && defined(KRB4) 250 { 251 extern char *dest_realm, dst_realm_buf[], dst_realm_sz; 252 dest_realm = dst_realm_buf; 253 (void)strlcpy(dest_realm, optarg, dst_realm_sz); 254 } 255 #else 256 fprintf(stderr, 257 "%s: Warning: -k ignored, no Kerberos V4 support.\n", 258 prompt); 259 #endif 260 break; 261 case 'l': 262 if(autologin == 0) { 263 autologin = -1; 264 } 265 user = optarg; 266 break; 267 case 'n': 268 #ifdef TN3270 269 /* distinguish between "-n oasynch" and "-noasynch" */ 270 if (argv[optind - 1][0] == '-' && argv[optind - 1][1] 271 == 'n' && argv[optind - 1][2] == 'o') { 272 if (!strcmp(optarg, "oasynch")) { 273 noasynchtty = 1; 274 noasynchnet = 1; 275 } else if (!strcmp(optarg, "oasynchtty")) 276 noasynchtty = 1; 277 else if (!strcmp(optarg, "oasynchnet")) 278 noasynchnet = 1; 279 } else 280 #endif /* defined(TN3270) */ 281 SetNetTrace(optarg); 282 break; 283 case 'r': 284 rlogin = '~'; 285 break; 286 case 't': 287 #ifdef TN3270 288 (void)strlcpy(tline, optarg, sizeof(tline)); 289 transcom = tline; 290 #else 291 fprintf(stderr, 292 "%s: Warning: -t ignored, no TN3270 support.\n", 293 prompt); 294 #endif 295 break; 296 case 'x': 297 #ifdef ENCRYPTION 298 encrypt_auto(1); 299 decrypt_auto(1); 300 #else /* ENCRYPTION */ 301 fprintf(stderr, 302 "%s: Warning: -x ignored, no ENCRYPT support.\n", 303 prompt); 304 #endif /* ENCRYPTION */ 305 break; 306 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 307 case 'P': 308 if (!strncmp("in", optarg, 2)) 309 ipsec_policy_in = strdup(optarg); 310 else if (!strncmp("out", optarg, 3)) 311 ipsec_policy_out = strdup(optarg); 312 else 313 usage(); 314 break; 315 #endif 316 case '?': 317 default: 318 usage(); 319 /* NOTREACHED */ 320 } 321 } 322 323 if (autologin == -1) { /* esc (at) magic.fi; force */ 324 #if defined(AUTHENTICATION) 325 autologin = 1; 326 #endif 327 #if defined(ENCRYPTION) 328 encrypt_auto(1); 329 decrypt_auto(1); 330 #endif 331 } 332 333 if (autologin == -1) 334 autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1; 335 336 argc -= optind; 337 argv += optind; 338 339 if (argc) { 340 char *args[7], **argp = args; 341 #ifdef __GNUC__ 342 (void) &argp; /* avoid longjmp clobbering */ 343 #endif 344 345 if (argc > 2) 346 usage(); 347 *argp++ = prompt; 348 if (user) { 349 *argp++ = "-l"; 350 *argp++ = user; 351 } 352 *argp++ = argv[0]; /* host */ 353 if (argc > 1) 354 *argp++ = argv[1]; /* port */ 355 *argp = 0; 356 357 if (setjmp(toplevel) != 0) 358 Exit(0); 359 if (tn(argp - args, args) == 1) 360 return (0); 361 else 362 return (1); 363 } 364 (void)setjmp(toplevel); 365 for (;;) { 366 #ifdef TN3270 367 if (shell_active) 368 shell_continue(); 369 else 370 #endif 371 command(1, 0, 0); 372 } 373 } 374
Indexes created Wed Oct 22 13:09:56 GMT 2025