1 /* $NetBSD: main.c,v 1.14 2001/01/03 12:41:00 mjl 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 1.14 2001/01/03 12:41:00 mjl 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 P((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 #if defined(CRAY) && !defined(__STDC__) 152 _setlist_init(); /* Work around compiler bug */ 153 #endif 154 155 TerminalSaveState(); 156 157 if ((prompt = strrchr(argv[0], '/')) != NULL) 158 ++prompt; 159 else 160 prompt = argv[0]; 161 162 user = NULL; 163 164 rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE; 165 autologin = -1; 166 167 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 168 #define IPSECOPT "P:" 169 #else 170 #define IPSECOPT 171 #endif 172 while ((ch = getopt(argc, argv, "8EKLNS:X:acde:fFk:l:n:rt:x" 173 IPSECOPT)) != -1) { 174 #undef IPSECOPT 175 switch(ch) { 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 #ifdef HAS_GETTOS 196 extern int tos; 197 198 if ((tos = parsetos(optarg, "tcp")) < 0) 199 fprintf(stderr, "%s%s%s%s\n", 200 prompt, ": Bad TOS argument '", 201 optarg, 202 "; will try to use default TOS"); 203 #else 204 fprintf(stderr, 205 "%s: Warning: -S ignored, no parsetos() support.\n", 206 prompt); 207 #endif 208 } 209 break; 210 case 'X': 211 #ifdef AUTHENTICATION 212 auth_disable_name(optarg); 213 #endif 214 break; 215 case 'a': 216 autologin = 1; 217 break; 218 case 'c': 219 skiprc = 1; 220 break; 221 case 'd': 222 debug = 1; 223 break; 224 case 'e': 225 set_escape_char(optarg); 226 break; 227 case 'f': 228 #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD) 229 if (forward_flags & OPTS_FORWARD_CREDS) { 230 fprintf(stderr, 231 "%s: Only one of -f and -F allowed.\n", 232 prompt); 233 usage(); 234 } 235 forward_flags |= OPTS_FORWARD_CREDS; 236 #else 237 fprintf(stderr, 238 "%s: Warning: -f ignored, no Kerberos V5 support.\n", 239 prompt); 240 #endif 241 break; 242 case 'F': 243 #if defined(AUTHENTICATION) && defined(KRB5) && defined(FORWARD) 244 if (forward_flags & OPTS_FORWARD_CREDS) { 245 fprintf(stderr, 246 "%s: Only one of -f and -F allowed.\n", 247 prompt); 248 usage(); 249 } 250 forward_flags |= OPTS_FORWARD_CREDS; 251 forward_flags |= OPTS_FORWARDABLE_CREDS; 252 #else 253 fprintf(stderr, 254 "%s: Warning: -F ignored, no Kerberos V5 support.\n", 255 prompt); 256 #endif 257 break; 258 case 'k': 259 #if defined(AUTHENTICATION) && defined(KRB4) 260 { 261 extern char *dest_realm, dst_realm_buf[], dst_realm_sz; 262 dest_realm = dst_realm_buf; 263 (void)strncpy(dest_realm, optarg, dst_realm_sz); 264 } 265 #else 266 fprintf(stderr, 267 "%s: Warning: -k ignored, no Kerberos V4 support.\n", 268 prompt); 269 #endif 270 break; 271 case 'l': 272 autologin = 1; 273 user = optarg; 274 break; 275 case 'n': 276 #if defined(TN3270) && defined(unix) 277 /* distinguish between "-n oasynch" and "-noasynch" */ 278 if (argv[optind - 1][0] == '-' && argv[optind - 1][1] 279 == 'n' && argv[optind - 1][2] == 'o') { 280 if (!strcmp(optarg, "oasynch")) { 281 noasynchtty = 1; 282 noasynchnet = 1; 283 } else if (!strcmp(optarg, "oasynchtty")) 284 noasynchtty = 1; 285 else if (!strcmp(optarg, "oasynchnet")) 286 noasynchnet = 1; 287 } else 288 #endif /* defined(TN3270) && defined(unix) */ 289 SetNetTrace(optarg); 290 break; 291 case 'r': 292 rlogin = '~'; 293 break; 294 case 't': 295 #if defined(TN3270) && defined(unix) 296 (void)strlcpy(tline, optarg, sizeof(tline)); 297 transcom = tline; 298 #else 299 fprintf(stderr, 300 "%s: Warning: -t ignored, no TN3270 support.\n", 301 prompt); 302 #endif 303 break; 304 case 'x': 305 #ifdef ENCRYPTION 306 encrypt_auto(1); 307 decrypt_auto(1); 308 #else /* ENCRYPTION */ 309 fprintf(stderr, 310 "%s: Warning: -x ignored, no ENCRYPT support.\n", 311 prompt); 312 #endif /* ENCRYPTION */ 313 break; 314 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 315 case 'P': 316 if (!strncmp("in", optarg, 2)) 317 ipsec_policy_in = strdup(optarg); 318 else if (!strncmp("out", optarg, 3)) 319 ipsec_policy_out = strdup(optarg); 320 else 321 usage(); 322 break; 323 #endif 324 case '?': 325 default: 326 usage(); 327 /* NOTREACHED */ 328 } 329 } 330 if (autologin == -1) 331 autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1; 332 333 argc -= optind; 334 argv += optind; 335 336 if (argc) { 337 char *args[7], **argp = args; 338 #ifdef __GNUC__ 339 (void) &argp; /* avoid longjmp clobbering */ 340 #endif 341 342 if (argc > 2) 343 usage(); 344 *argp++ = prompt; 345 if (user) { 346 *argp++ = "-l"; 347 *argp++ = user; 348 } 349 *argp++ = argv[0]; /* host */ 350 if (argc > 1) 351 *argp++ = argv[1]; /* port */ 352 *argp = 0; 353 354 if (setjmp(toplevel) != 0) 355 Exit(0); 356 if (tn(argp - args, args) == 1) 357 return (0); 358 else 359 return (1); 360 } 361 (void)setjmp(toplevel); 362 for (;;) { 363 #ifdef TN3270 364 if (shell_active) 365 shell_continue(); 366 else 367 #endif 368 command(1, 0, 0); 369 } 370 } 371