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