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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #if 0 31 #ifndef lint 32 static const char sccsid[] = "@(#)commands.c 8.4 (Berkeley) 5/30/95"; 33 #endif 34 #endif 35 36 #include <sys/param.h> 37 #include <sys/un.h> 38 #include <sys/file.h> 39 #include <sys/socket.h> 40 #include <netinet/in.h> 41 42 #include <assert.h> 43 #include <ctype.h> 44 #include <err.h> 45 #include <errno.h> 46 #include <netdb.h> 47 #include <pwd.h> 48 #include <signal.h> 49 #include <stdarg.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <unistd.h> 53 54 #include <arpa/telnet.h> 55 #include <arpa/inet.h> 56 57 #include "general.h" 58 59 #include "ring.h" 60 61 #include "externs.h" 62 #include "defines.h" 63 #include "types.h" 64 #include "misc.h" 65 66 #ifdef AUTHENTICATION 67 #include <libtelnet/auth.h> 68 #endif 69 #ifdef ENCRYPTION 70 #include <libtelnet/encrypt.h> 71 #endif 72 73 #include <netinet/in_systm.h> 74 #include <netinet/ip.h> 75 #include <netinet/ip6.h> 76 77 #ifndef MAXHOSTNAMELEN 78 #define MAXHOSTNAMELEN 256 79 #endif 80 81 typedef int (*intrtn_t)(int, char **); 82 83 #ifdef AUTHENTICATION 84 extern int auth_togdebug(int); 85 #endif 86 #ifdef ENCRYPTION 87 extern int EncryptAutoEnc(int); 88 extern int EncryptAutoDec(int); 89 extern int EncryptDebug(int); 90 extern int EncryptVerbose(int); 91 #endif /* ENCRYPTION */ 92 #if defined(IPPROTO_IP) && defined(IP_TOS) 93 int tos = -1; 94 #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 95 96 char *hostname; 97 static char _hostname[MAXHOSTNAMELEN]; 98 99 static int help(int, char **); 100 static int call(intrtn_t, ...); 101 static void cmdrc(char *, char *); 102 #ifdef INET6 103 static int switch_af(struct addrinfo **); 104 #endif 105 static int togglehelp(void); 106 static int send_tncmd(void (*)(int, int), const char *, char *); 107 static int setmod(int); 108 static int clearmode(int); 109 static int modehelp(void); 110 static int sourceroute(struct addrinfo *, char *, unsigned char **, int *, int *, int *); 111 112 typedef struct { 113 const char *name; /* command name */ 114 const char *help; /* help string (NULL for no help) */ 115 int (*handler)(int, char **); /* routine which executes command */ 116 int needconnect; /* Do we need to be connected to execute? */ 117 } Command; 118 119 static char line[256]; 120 static char saveline[256]; 121 static int margc; 122 static char *margv[20]; 123 int quiet_mode; 124 125 #ifdef OPIE 126 #include <sys/wait.h> 127 #define PATH_OPIEKEY "/usr/bin/opiekey" 128 static int 129 opie_calc(int argc, char *argv[]) 130 { 131 int status; 132 133 if(argc != 3) { 134 printf("%s sequence challenge\n", argv[0]); 135 return (0); 136 } 137 138 switch(fork()) { 139 case 0: 140 execv(PATH_OPIEKEY, argv); 141 exit (1); 142 case -1: 143 perror("fork"); 144 break; 145 default: 146 (void) wait(&status); 147 if (WIFEXITED(status)) 148 return (WEXITSTATUS(status)); 149 } 150 return (0); 151 } 152 #endif 153 154 static void 155 makeargv(void) 156 { 157 char *cp, *cp2, c; 158 char **argp = margv; 159 160 margc = 0; 161 cp = line; 162 if (*cp == '!') { /* Special case shell escape */ 163 strcpy(saveline, line); /* save for shell command */ 164 *argp++ = strdup("!"); /* No room in string to get this */ 165 margc++; 166 cp++; 167 } 168 while ((c = *cp)) { 169 int inquote = 0; 170 while (isspace(c)) 171 c = *++cp; 172 if (c == '\0') 173 break; 174 *argp++ = cp; 175 margc += 1; 176 for (cp2 = cp; c != '\0'; c = *++cp) { 177 if (inquote) { 178 if (c == inquote) { 179 inquote = 0; 180 continue; 181 } 182 } else { 183 if (c == '\\') { 184 if ((c = *++cp) == '\0') 185 break; 186 } else if (c == '"') { 187 inquote = '"'; 188 continue; 189 } else if (c == '\'') { 190 inquote = '\''; 191 continue; 192 } else if (isspace(c)) 193 break; 194 } 195 *cp2++ = c; 196 } 197 *cp2 = '\0'; 198 if (c == '\0') 199 break; 200 cp++; 201 } 202 *argp++ = 0; 203 } 204 205 /* 206 * Make a character string into a number. 207 * 208 * Todo: 1. Could take random integers (12, 0x12, 012, 0b1). 209 */ 210 211 static int 212 special(char *s) 213 { 214 char c; 215 char b; 216 217 switch (*s) { 218 case '^': 219 b = *++s; 220 if (b == '?') { 221 c = b | 0x40; /* DEL */ 222 } else { 223 c = b & 0x1f; 224 } 225 break; 226 default: 227 c = *s; 228 break; 229 } 230 return c; 231 } 232 233 /* 234 * Construct a control character sequence 235 * for a special character. 236 */ 237 static const char * 238 control(cc_t c) 239 { 240 static char buf[5]; 241 /* 242 * The only way I could get the Sun 3.5 compiler 243 * to shut up about 244 * if ((unsigned int)c >= 0x80) 245 * was to assign "c" to an unsigned int variable... 246 * Arggg.... 247 */ 248 unsigned int uic = (unsigned int)c; 249 250 if (uic == 0x7f) 251 return ("^?"); 252 if (c == (cc_t)_POSIX_VDISABLE) { 253 return "off"; 254 } 255 if (uic >= 0x80) { 256 buf[0] = '\\'; 257 buf[1] = ((c>>6)&07) + '0'; 258 buf[2] = ((c>>3)&07) + '0'; 259 buf[3] = (c&07) + '0'; 260 buf[4] = 0; 261 } else if (uic >= 0x20) { 262 buf[0] = c; 263 buf[1] = 0; 264 } else { 265 buf[0] = '^'; 266 buf[1] = '@'+c; 267 buf[2] = 0; 268 } 269 return (buf); 270 } 271 272 /* 273 * The following are data structures and routines for 274 * the "send" command. 275 * 276 */ 277 278 struct sendlist { 279 const char *name; /* How user refers to it (case independent) */ 280 const char *help; /* Help information (0 ==> no help) */ 281 int needconnect; /* Need to be connected */ 282 int narg; /* Number of arguments */ 283 int (*handler)(char *, ...); /* Routine to perform (for special ops) */ 284 int nbyte; /* Number of bytes to send this command */ 285 int what; /* Character to be sent (<0 ==> special) */ 286 }; 287 288 289 static int 290 send_esc(void), 291 send_help(void), 292 send_docmd(char *), 293 send_dontcmd(char *), 294 send_willcmd(char *), 295 send_wontcmd(char *); 296 297 static struct sendlist Sendlist[] = { 298 { "ao", "Send Telnet Abort output", 1, 0, NULL, 2, AO }, 299 { "ayt", "Send Telnet 'Are You There'", 1, 0, NULL, 2, AYT }, 300 { "brk", "Send Telnet Break", 1, 0, NULL, 2, BREAK }, 301 { "break", NULL, 1, 0, NULL, 2, BREAK }, 302 { "ec", "Send Telnet Erase Character", 1, 0, NULL, 2, EC }, 303 { "el", "Send Telnet Erase Line", 1, 0, NULL, 2, EL }, 304 { "escape", "Send current escape character",1, 0, (int (*)(char *, ...))send_esc, 1, 0 }, 305 { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, NULL, 2, GA }, 306 { "ip", "Send Telnet Interrupt Process",1, 0, NULL, 2, IP }, 307 { "intp", NULL, 1, 0, NULL, 2, IP }, 308 { "interrupt", NULL, 1, 0, NULL, 2, IP }, 309 { "intr", NULL, 1, 0, NULL, 2, IP }, 310 { "nop", "Send Telnet 'No operation'", 1, 0, NULL, 2, NOP }, 311 { "eor", "Send Telnet 'End of Record'", 1, 0, NULL, 2, EOR }, 312 { "abort", "Send Telnet 'Abort Process'", 1, 0, NULL, 2, ABORT }, 313 { "susp", "Send Telnet 'Suspend Process'",1, 0, NULL, 2, SUSP }, 314 { "eof", "Send Telnet End of File Character", 1, 0, NULL, 2, xEOF }, 315 { "synch", "Perform Telnet 'Synch operation'", 1, 0, (int (*)(char *, ...))dosynch, 2, 0 }, 316 { "getstatus", "Send request for STATUS", 1, 0, (int (*)(char *, ...))get_status, 6, 0 }, 317 { "?", "Display send options", 0, 0, (int (*)(char *, ...))send_help, 0, 0 }, 318 { "help", NULL, 0, 0, (int (*)(char *, ...))send_help, 0, 0 }, 319 { "do", NULL, 0, 1, (int (*)(char *, ...))send_docmd, 3, 0 }, 320 { "dont", NULL, 0, 1, (int (*)(char *, ...))send_dontcmd, 3, 0 }, 321 { "will", NULL, 0, 1, (int (*)(char *, ...))send_willcmd, 3, 0 }, 322 { "wont", NULL, 0, 1, (int (*)(char *, ...))send_wontcmd, 3, 0 }, 323 { NULL, NULL, 0, 0, NULL, 0, 0 } 324 }; 325 326 #define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \ 327 sizeof(struct sendlist))) 328 329 static int 330 sendcmd(int argc, char *argv[]) 331 { 332 int count; /* how many bytes we are going to need to send */ 333 int i; 334 struct sendlist *s; /* pointer to current command */ 335 int success = 0; 336 int needconnect = 0; 337 338 if (argc < 2) { 339 printf("need at least one argument for 'send' command\n"); 340 printf("'send ?' for help\n"); 341 return 0; 342 } 343 /* 344 * First, validate all the send arguments. 345 * In addition, we see how much space we are going to need, and 346 * whether or not we will be doing a "SYNCH" operation (which 347 * flushes the network queue). 348 */ 349 count = 0; 350 for (i = 1; i < argc; i++) { 351 s = GETSEND(argv[i]); 352 if (s == 0) { 353 printf("Unknown send argument '%s'\n'send ?' for help.\n", 354 argv[i]); 355 return 0; 356 } else if (Ambiguous((void *)s)) { 357 printf("Ambiguous send argument '%s'\n'send ?' for help.\n", 358 argv[i]); 359 return 0; 360 } 361 if (i + s->narg >= argc) { 362 fprintf(stderr, 363 "Need %d argument%s to 'send %s' command. 'send %s ?' for help.\n", 364 s->narg, s->narg == 1 ? "" : "s", s->name, s->name); 365 return 0; 366 } 367 count += s->nbyte; 368 if ((void *)s->handler == (void *)send_help) { 369 send_help(); 370 return 0; 371 } 372 373 i += s->narg; 374 needconnect += s->needconnect; 375 } 376 if (!connected && needconnect) { 377 printf("?Need to be connected first.\n"); 378 printf("'send ?' for help\n"); 379 return 0; 380 } 381 /* Now, do we have enough room? */ 382 if (NETROOM() < count) { 383 printf("There is not enough room in the buffer TO the network\n"); 384 printf("to process your request. Nothing will be done.\n"); 385 printf("('send synch' will throw away most data in the network\n"); 386 printf("buffer, if this might help.)\n"); 387 return 0; 388 } 389 /* OK, they are all OK, now go through again and actually send */ 390 count = 0; 391 for (i = 1; i < argc; i++) { 392 if ((s = GETSEND(argv[i])) == 0) { 393 fprintf(stderr, "Telnet 'send' error - argument disappeared!\n"); 394 quit(); 395 /*NOTREACHED*/ 396 } 397 if (s->handler) { 398 count++; 399 success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0, 400 (s->narg > 1) ? argv[i+2] : 0); 401 i += s->narg; 402 } else { 403 NET2ADD(IAC, s->what); 404 printoption("SENT", IAC, s->what); 405 } 406 } 407 return (count == success); 408 } 409 410 static int 411 send_esc(void) 412 { 413 NETADD(escape); 414 return 1; 415 } 416 417 static int 418 send_docmd(char *name) 419 { 420 return(send_tncmd(send_do, "do", name)); 421 } 422 423 static int 424 send_dontcmd(char *name) 425 { 426 return(send_tncmd(send_dont, "dont", name)); 427 } 428 429 static int 430 send_willcmd(char *name) 431 { 432 return(send_tncmd(send_will, "will", name)); 433 } 434 435 static int 436 send_wontcmd(char *name) 437 { 438 return(send_tncmd(send_wont, "wont", name)); 439 } 440 441 static int 442 send_tncmd(void (*func)(int, int), const char *cmd, char *name) 443 { 444 char **cpp; 445 extern char *telopts[]; 446 int val = 0; 447 448 if (isprefix(name, "help") || isprefix(name, "?")) { 449 int col, len; 450 451 printf("usage: send %s <value|option>\n", cmd); 452 printf("\"value\" must be from 0 to 255\n"); 453 printf("Valid options are:\n\t"); 454 455 col = 8; 456 for (cpp = telopts; *cpp; cpp++) { 457 len = strlen(*cpp) + 3; 458 if (col + len > 65) { 459 printf("\n\t"); 460 col = 8; 461 } 462 printf(" \"%s\"", *cpp); 463 col += len; 464 } 465 printf("\n"); 466 return 0; 467 } 468 cpp = (char **)genget(name, telopts, sizeof(char *)); 469 if (Ambiguous(cpp)) { 470 fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).\n", 471 name, cmd); 472 return 0; 473 } 474 if (cpp) { 475 val = cpp - telopts; 476 } else { 477 char *cp = name; 478 479 while (*cp >= '0' && *cp <= '9') { 480 val *= 10; 481 val += *cp - '0'; 482 cp++; 483 } 484 if (*cp != 0) { 485 fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).\n", 486 name, cmd); 487 return 0; 488 } else if (val < 0 || val > 255) { 489 fprintf(stderr, "'%s': bad value ('send %s ?' for help).\n", 490 name, cmd); 491 return 0; 492 } 493 } 494 if (!connected) { 495 printf("?Need to be connected first.\n"); 496 return 0; 497 } 498 (*func)(val, 1); 499 return 1; 500 } 501 502 static int 503 send_help(void) 504 { 505 struct sendlist *s; /* pointer to current command */ 506 for (s = Sendlist; s->name; s++) { 507 if (s->help) 508 printf("%-15s %s\n", s->name, s->help); 509 } 510 return(0); 511 } 512 513 /* 514 * The following are the routines and data structures referred 515 * to by the arguments to the "toggle" command. 516 */ 517 518 static int 519 lclchars(void) 520 { 521 donelclchars = 1; 522 return 1; 523 } 524 525 static int 526 togdebug(void) 527 { 528 #ifndef NOT43 529 if (net > 0 && 530 (SetSockOpt(net, SOL_SOCKET, SO_DEBUG, telnet_debug)) < 0) { 531 perror("setsockopt (SO_DEBUG)"); 532 } 533 #else /* NOT43 */ 534 if (telnet_debug) { 535 if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) 536 perror("setsockopt (SO_DEBUG)"); 537 } else 538 printf("Cannot turn off socket debugging\n"); 539 #endif /* NOT43 */ 540 return 1; 541 } 542 543 544 static int 545 togcrlf(void) 546 { 547 if (crlf) { 548 printf("Will send carriage returns as telnet <CR><LF>.\n"); 549 } else { 550 printf("Will send carriage returns as telnet <CR><NUL>.\n"); 551 } 552 return 1; 553 } 554 555 int binmode; 556 557 static int 558 togbinary(int val) 559 { 560 donebinarytoggle = 1; 561 562 if (val >= 0) { 563 binmode = val; 564 } else { 565 if (my_want_state_is_will(TELOPT_BINARY) && 566 my_want_state_is_do(TELOPT_BINARY)) { 567 binmode = 1; 568 } else if (my_want_state_is_wont(TELOPT_BINARY) && 569 my_want_state_is_dont(TELOPT_BINARY)) { 570 binmode = 0; 571 } 572 val = binmode ? 0 : 1; 573 } 574 575 if (val == 1) { 576 if (my_want_state_is_will(TELOPT_BINARY) && 577 my_want_state_is_do(TELOPT_BINARY)) { 578 printf("Already operating in binary mode with remote host.\n"); 579 } else { 580 printf("Negotiating binary mode with remote host.\n"); 581 tel_enter_binary(3); 582 } 583 } else { 584 if (my_want_state_is_wont(TELOPT_BINARY) && 585 my_want_state_is_dont(TELOPT_BINARY)) { 586 printf("Already in network ascii mode with remote host.\n"); 587 } else { 588 printf("Negotiating network ascii mode with remote host.\n"); 589 tel_leave_binary(3); 590 } 591 } 592 return 1; 593 } 594 595 static int 596 togrbinary(int val) 597 { 598 donebinarytoggle = 1; 599 600 if (val == -1) 601 val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1; 602 603 if (val == 1) { 604 if (my_want_state_is_do(TELOPT_BINARY)) { 605 printf("Already receiving in binary mode.\n"); 606 } else { 607 printf("Negotiating binary mode on input.\n"); 608 tel_enter_binary(1); 609 } 610 } else { 611 if (my_want_state_is_dont(TELOPT_BINARY)) { 612 printf("Already receiving in network ascii mode.\n"); 613 } else { 614 printf("Negotiating network ascii mode on input.\n"); 615 tel_leave_binary(1); 616 } 617 } 618 return 1; 619 } 620 621 static int 622 togxbinary(int val) 623 { 624 donebinarytoggle = 1; 625 626 if (val == -1) 627 val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1; 628 629 if (val == 1) { 630 if (my_want_state_is_will(TELOPT_BINARY)) { 631 printf("Already transmitting in binary mode.\n"); 632 } else { 633 printf("Negotiating binary mode on output.\n"); 634 tel_enter_binary(2); 635 } 636 } else { 637 if (my_want_state_is_wont(TELOPT_BINARY)) { 638 printf("Already transmitting in network ascii mode.\n"); 639 } else { 640 printf("Negotiating network ascii mode on output.\n"); 641 tel_leave_binary(2); 642 } 643 } 644 return 1; 645 } 646 647 struct togglelist { 648 const char *name; /* name of toggle */ 649 const char *help; /* help message */ 650 int (*handler)(int); /* routine to do actual setting */ 651 int *variable; 652 const char *actionexplanation; 653 }; 654 655 static struct togglelist Togglelist[] = { 656 { "autoflush", 657 "flushing of output when sending interrupt characters", 658 0, 659 &autoflush, 660 "flush output when sending interrupt characters" }, 661 { "autosynch", 662 "automatic sending of interrupt characters in urgent mode", 663 0, 664 &autosynch, 665 "send interrupt characters in urgent mode" }, 666 #ifdef AUTHENTICATION 667 { "autologin", 668 "automatic sending of login and/or authentication info", 669 0, 670 &autologin, 671 "send login name and/or authentication information" }, 672 { "authdebug", 673 "Toggle authentication debugging", 674 auth_togdebug, 675 0, 676 "print authentication debugging information" }, 677 #endif 678 #ifdef ENCRYPTION 679 { "autoencrypt", 680 "automatic encryption of data stream", 681 EncryptAutoEnc, 682 0, 683 "automatically encrypt output" }, 684 { "autodecrypt", 685 "automatic decryption of data stream", 686 EncryptAutoDec, 687 0, 688 "automatically decrypt input" }, 689 { "verbose_encrypt", 690 "Toggle verbose encryption output", 691 EncryptVerbose, 692 0, 693 "print verbose encryption output" }, 694 { "encdebug", 695 "Toggle encryption debugging", 696 EncryptDebug, 697 0, 698 "print encryption debugging information" }, 699 #endif /* ENCRYPTION */ 700 { "skiprc", 701 "don't read ~/.telnetrc file", 702 0, 703 &skiprc, 704 "skip reading of ~/.telnetrc file" }, 705 { "binary", 706 "sending and receiving of binary data", 707 togbinary, 708 0, 709 0 }, 710 { "inbinary", 711 "receiving of binary data", 712 togrbinary, 713 0, 714 0 }, 715 { "outbinary", 716 "sending of binary data", 717 togxbinary, 718 0, 719 0 }, 720 { "crlf", 721 "sending carriage returns as telnet <CR><LF>", 722 (int (*)(int))togcrlf, 723 &crlf, 724 0 }, 725 { "crmod", 726 "mapping of received carriage returns", 727 0, 728 &crmod, 729 "map carriage return on output" }, 730 { "localchars", 731 "local recognition of certain control characters", 732 (int (*)(int))lclchars, 733 &localchars, 734 "recognize certain control characters" }, 735 { " ", "", NULL, NULL, NULL }, /* empty line */ 736 { "debug", 737 "debugging", 738 (int (*)(int))togdebug, 739 &telnet_debug, 740 "turn on socket level debugging" }, 741 { "netdata", 742 "printing of hexadecimal network data (debugging)", 743 0, 744 &netdata, 745 "print hexadecimal representation of network traffic" }, 746 { "prettydump", 747 "output of \"netdata\" to user readable format (debugging)", 748 0, 749 &prettydump, 750 "print user readable output for \"netdata\"" }, 751 { "options", 752 "viewing of options processing (debugging)", 753 0, 754 &showoptions, 755 "show option processing" }, 756 { "termdata", 757 "(debugging) toggle printing of hexadecimal terminal data", 758 0, 759 &termdata, 760 "print hexadecimal representation of terminal traffic" }, 761 { "?", 762 NULL, 763 (int (*)(int))togglehelp, 764 NULL, 765 NULL }, 766 { NULL, NULL, NULL, NULL, NULL }, 767 { "help", 768 NULL, 769 (int (*)(int))togglehelp, 770 NULL, 771 NULL }, 772 { NULL, NULL, NULL, NULL, NULL } 773 }; 774 775 static int 776 togglehelp(void) 777 { 778 struct togglelist *c; 779 780 for (c = Togglelist; c->name; c++) { 781 if (c->help) { 782 if (*c->help) 783 printf("%-15s toggle %s\n", c->name, c->help); 784 else 785 printf("\n"); 786 } 787 } 788 printf("\n"); 789 printf("%-15s %s\n", "?", "display help information"); 790 return 0; 791 } 792 793 static void 794 settogglehelp(int set) 795 { 796 struct togglelist *c; 797 798 for (c = Togglelist; c->name; c++) { 799 if (c->help) { 800 if (*c->help) 801 printf("%-15s %s %s\n", c->name, set ? "enable" : "disable", 802 c->help); 803 else 804 printf("\n"); 805 } 806 } 807 } 808 809 #define GETTOGGLE(name) (struct togglelist *) \ 810 genget(name, (char **) Togglelist, sizeof(struct togglelist)) 811 812 static int 813 toggle(int argc, char *argv[]) 814 { 815 int retval = 1; 816 char *name; 817 struct togglelist *c; 818 819 if (argc < 2) { 820 fprintf(stderr, 821 "Need an argument to 'toggle' command. 'toggle ?' for help.\n"); 822 return 0; 823 } 824 argc--; 825 argv++; 826 while (argc--) { 827 name = *argv++; 828 c = GETTOGGLE(name); 829 if (Ambiguous((void *)c)) { 830 fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\n", 831 name); 832 return 0; 833 } else if (c == 0) { 834 fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\n", 835 name); 836 return 0; 837 } else { 838 if (c->variable) { 839 *c->variable = !*c->variable; /* invert it */ 840 if (c->actionexplanation) { 841 printf("%s %s.\n", *c->variable? "Will" : "Won't", 842 c->actionexplanation); 843 } 844 } 845 if (c->handler) { 846 retval &= (*c->handler)(-1); 847 } 848 } 849 } 850 return retval; 851 } 852 853 /* 854 * The following perform the "set" command. 855 */ 856 857 #ifdef USE_TERMIO 858 struct termio new_tc = { 0, 0, 0, 0, {}, 0, 0 }; 859 #endif 860 861 struct setlist { 862 const char *name; /* name */ 863 const char *help; /* help information */ 864 void (*handler)(char *); 865 cc_t *charp; /* where it is located at */ 866 }; 867 868 static struct setlist Setlist[] = { 869 #ifdef KLUDGELINEMODE 870 { "echo", "character to toggle local echoing on/off", NULL, &echoc }, 871 #endif 872 { "escape", "character to escape back to telnet command mode", NULL, &escape }, 873 { "rlogin", "rlogin escape character", 0, &rlogin }, 874 { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile}, 875 { " ", "", NULL, NULL }, 876 { " ", "The following need 'localchars' to be toggled true", NULL, NULL }, 877 { "flushoutput", "character to cause an Abort Output", NULL, termFlushCharp }, 878 { "interrupt", "character to cause an Interrupt Process", NULL, termIntCharp }, 879 { "quit", "character to cause an Abort process", NULL, termQuitCharp }, 880 { "eof", "character to cause an EOF ", NULL, termEofCharp }, 881 { " ", "", NULL, NULL }, 882 { " ", "The following are for local editing in linemode", NULL, NULL }, 883 { "erase", "character to use to erase a character", NULL, termEraseCharp }, 884 { "kill", "character to use to erase a line", NULL, termKillCharp }, 885 { "lnext", "character to use for literal next", NULL, termLiteralNextCharp }, 886 { "susp", "character to cause a Suspend Process", NULL, termSuspCharp }, 887 { "reprint", "character to use for line reprint", NULL, termRprntCharp }, 888 { "worderase", "character to use to erase a word", NULL, termWerasCharp }, 889 { "start", "character to use for XON", NULL, termStartCharp }, 890 { "stop", "character to use for XOFF", NULL, termStopCharp }, 891 { "forw1", "alternate end of line character", NULL, termForw1Charp }, 892 { "forw2", "alternate end of line character", NULL, termForw2Charp }, 893 { "ayt", "alternate AYT character", NULL, termAytCharp }, 894 { "baudrate", "set remote baud rate", DoBaudRate, ComPortBaudRate }, 895 { NULL, NULL, NULL, NULL } 896 }; 897 898 static struct setlist * 899 getset(char *name) 900 { 901 return (struct setlist *) 902 genget(name, (char **) Setlist, sizeof(struct setlist)); 903 } 904 905 void 906 set_escape_char(char *s) 907 { 908 if (rlogin != _POSIX_VDISABLE) { 909 rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE; 910 printf("Telnet rlogin escape character is '%s'.\n", 911 control(rlogin)); 912 } else { 913 escape = (s && *s) ? special(s) : _POSIX_VDISABLE; 914 printf("Telnet escape character is '%s'.\n", control(escape)); 915 } 916 } 917 918 static int 919 setcmd(int argc, char *argv[]) 920 { 921 int value; 922 struct setlist *ct; 923 struct togglelist *c; 924 925 if (argc < 2 || argc > 3) { 926 printf("Format is 'set Name Value'\n'set ?' for help.\n"); 927 return 0; 928 } 929 if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) { 930 for (ct = Setlist; ct->name; ct++) 931 printf("%-15s %s\n", ct->name, ct->help); 932 printf("\n"); 933 settogglehelp(1); 934 printf("%-15s %s\n", "?", "display help information"); 935 return 0; 936 } 937 938 ct = getset(argv[1]); 939 if (ct == 0 || !(ct->name && ct->name[0] != ' ')) { 940 c = GETTOGGLE(argv[1]); 941 if (c == 0) { 942 fprintf(stderr, "'%s': unknown argument ('set ?' for help).\n", 943 argv[1]); 944 return 0; 945 } else if (Ambiguous((void *)c)) { 946 fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n", 947 argv[1]); 948 return 0; 949 } 950 if (c->variable) { 951 if ((argc == 2) || (strcmp("on", argv[2]) == 0)) 952 *c->variable = 1; 953 else if (strcmp("off", argv[2]) == 0) 954 *c->variable = 0; 955 else { 956 printf("Format is 'set togglename [on|off]'\n'set ?' for help.\n"); 957 return 0; 958 } 959 if (c->actionexplanation) { 960 printf("%s %s.\n", *c->variable? "Will" : "Won't", 961 c->actionexplanation); 962 } 963 } 964 if (c->handler) 965 (*c->handler)(1); 966 } else if (argc != 3) { 967 printf("Format is 'set Name Value'\n'set ?' for help.\n"); 968 return 0; 969 } else if (Ambiguous((void *)ct)) { 970 fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n", 971 argv[1]); 972 return 0; 973 } else if (ct->handler) { 974 (*ct->handler)(argv[2]); 975 printf("%s set to \"%s\".\n", ct->name, (char *)ct->charp); 976 } else { 977 if (strcmp("off", argv[2])) { 978 value = special(argv[2]); 979 } else { 980 value = _POSIX_VDISABLE; 981 } 982 *(ct->charp) = (cc_t)value; 983 printf("%s character is '%s'.\n", ct->name, control(*(ct->charp))); 984 } 985 slc_check(); 986 return 1; 987 } 988 989 static int 990 unsetcmd(int argc, char *argv[]) 991 { 992 struct setlist *ct; 993 struct togglelist *c; 994 char *name; 995 996 if (argc < 2) { 997 fprintf(stderr, 998 "Need an argument to 'unset' command. 'unset ?' for help.\n"); 999 return 0; 1000 } 1001 if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) { 1002 for (ct = Setlist; ct->name; ct++) 1003 printf("%-15s %s\n", ct->name, ct->help); 1004 printf("\n"); 1005 settogglehelp(0); 1006 printf("%-15s %s\n", "?", "display help information"); 1007 return 0; 1008 } 1009 1010 argc--; 1011 argv++; 1012 while (argc--) { 1013 name = *argv++; 1014 ct = getset(name); 1015 if (ct == 0 || !(ct->name && ct->name[0] != ' ')) { 1016 c = GETTOGGLE(name); 1017 if (c == 0) { 1018 fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\n", 1019 name); 1020 return 0; 1021 } else if (Ambiguous((void *)c)) { 1022 fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n", 1023 name); 1024 return 0; 1025 } 1026 if (c->variable) { 1027 *c->variable = 0; 1028 if (c->actionexplanation) { 1029 printf("%s %s.\n", *c->variable? "Will" : "Won't", 1030 c->actionexplanation); 1031 } 1032 } 1033 if (c->handler) 1034 (*c->handler)(0); 1035 } else if (Ambiguous((void *)ct)) { 1036 fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n", 1037 name); 1038 return 0; 1039 } else if (ct->handler) { 1040 (*ct->handler)(0); 1041 printf("%s reset to \"%s\".\n", ct->name, (char *)ct->charp); 1042 } else { 1043 *(ct->charp) = _POSIX_VDISABLE; 1044 printf("%s character is '%s'.\n", ct->name, control(*(ct->charp))); 1045 } 1046 } 1047 return 1; 1048 } 1049 1050 /* 1051 * The following are the data structures and routines for the 1052 * 'mode' command. 1053 */ 1054 #ifdef KLUDGELINEMODE 1055 extern int kludgelinemode; 1056 1057 static int 1058 dokludgemode(void) 1059 { 1060 kludgelinemode = 1; 1061 send_wont(TELOPT_LINEMODE, 1); 1062 send_dont(TELOPT_SGA, 1); 1063 send_dont(TELOPT_ECHO, 1); 1064 return 1; 1065 } 1066 #endif 1067 1068 static int 1069 dolinemode(void) 1070 { 1071 #ifdef KLUDGELINEMODE 1072 if (kludgelinemode) 1073 send_dont(TELOPT_SGA, 1); 1074 #endif 1075 send_will(TELOPT_LINEMODE, 1); 1076 send_dont(TELOPT_ECHO, 1); 1077 return 1; 1078 } 1079 1080 static int 1081 docharmode(void) 1082 { 1083 #ifdef KLUDGELINEMODE 1084 if (kludgelinemode) 1085 send_do(TELOPT_SGA, 1); 1086 else 1087 #endif 1088 send_wont(TELOPT_LINEMODE, 1); 1089 send_do(TELOPT_ECHO, 1); 1090 return 1; 1091 } 1092 1093 static int 1094 dolmmode(int bit, int on) 1095 { 1096 unsigned char c; 1097 extern int linemode; 1098 1099 if (my_want_state_is_wont(TELOPT_LINEMODE)) { 1100 printf("?Need to have LINEMODE option enabled first.\n"); 1101 printf("'mode ?' for help.\n"); 1102 return 0; 1103 } 1104 1105 if (on) 1106 c = (linemode | bit); 1107 else 1108 c = (linemode & ~bit); 1109 lm_mode(&c, 1, 1); 1110 return 1; 1111 } 1112 1113 static int 1114 setmod(int bit) 1115 { 1116 return dolmmode(bit, 1); 1117 } 1118 1119 static int 1120 clearmode(int bit) 1121 { 1122 return dolmmode(bit, 0); 1123 } 1124 1125 struct modelist { 1126 const char *name; /* command name */ 1127 const char *help; /* help string */ 1128 int (*handler)(int);/* routine which executes command */ 1129 int needconnect; /* Do we need to be connected to execute? */ 1130 int arg1; 1131 }; 1132 1133 static struct modelist ModeList[] = { 1134 { "character", "Disable LINEMODE option", (int (*)(int))docharmode, 1, 0 }, 1135 #ifdef KLUDGELINEMODE 1136 { "", "(or disable obsolete line-by-line mode)", NULL, 0, 0 }, 1137 #endif 1138 { "line", "Enable LINEMODE option", (int (*)(int))dolinemode, 1, 0 }, 1139 #ifdef KLUDGELINEMODE 1140 { "", "(or enable obsolete line-by-line mode)", NULL, 0, 0 }, 1141 #endif 1142 { "", "", NULL, 0, 0 }, 1143 { "", "These require the LINEMODE option to be enabled", NULL, 0, 0 }, 1144 { "isig", "Enable signal trapping", setmod, 1, MODE_TRAPSIG }, 1145 { "+isig", 0, setmod, 1, MODE_TRAPSIG }, 1146 { "-isig", "Disable signal trapping", clearmode, 1, MODE_TRAPSIG }, 1147 { "edit", "Enable character editing", setmod, 1, MODE_EDIT }, 1148 { "+edit", 0, setmod, 1, MODE_EDIT }, 1149 { "-edit", "Disable character editing", clearmode, 1, MODE_EDIT }, 1150 { "softtabs", "Enable tab expansion", setmod, 1, MODE_SOFT_TAB }, 1151 { "+softtabs", 0, setmod, 1, MODE_SOFT_TAB }, 1152 { "-softtabs", "Disable character editing", clearmode, 1, MODE_SOFT_TAB }, 1153 { "litecho", "Enable literal character echo", setmod, 1, MODE_LIT_ECHO }, 1154 { "+litecho", 0, setmod, 1, MODE_LIT_ECHO }, 1155 { "-litecho", "Disable literal character echo", clearmode, 1, MODE_LIT_ECHO }, 1156 { "help", 0, (int (*)(int))modehelp, 0, 0 }, 1157 #ifdef KLUDGELINEMODE 1158 { "kludgeline", 0, (int (*)(int))dokludgemode, 1, 0 }, 1159 #endif 1160 { "", "", NULL, 0, 0 }, 1161 { "?", "Print help information", (int (*)(int))modehelp, 0, 0 }, 1162 { NULL, NULL, NULL, 0, 0 }, 1163 }; 1164 1165 1166 static int 1167 modehelp(void) 1168 { 1169 struct modelist *mt; 1170 1171 printf("format is: 'mode Mode', where 'Mode' is one of:\n\n"); 1172 for (mt = ModeList; mt->name; mt++) { 1173 if (mt->help) { 1174 if (*mt->help) 1175 printf("%-15s %s\n", mt->name, mt->help); 1176 else 1177 printf("\n"); 1178 } 1179 } 1180 return 0; 1181 } 1182 1183 #define GETMODECMD(name) (struct modelist *) \ 1184 genget(name, (char **) ModeList, sizeof(struct modelist)) 1185 1186 static int 1187 modecmd(int argc, char *argv[]) 1188 { 1189 struct modelist *mt; 1190 1191 if (argc != 2) { 1192 printf("'mode' command requires an argument\n"); 1193 printf("'mode ?' for help.\n"); 1194 } else if ((mt = GETMODECMD(argv[1])) == 0) { 1195 fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\n", argv[1]); 1196 } else if (Ambiguous((void *)mt)) { 1197 fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\n", argv[1]); 1198 } else if (mt->needconnect && !connected) { 1199 printf("?Need to be connected first.\n"); 1200 printf("'mode ?' for help.\n"); 1201 } else if (mt->handler) { 1202 return (*mt->handler)(mt->arg1); 1203 } 1204 return 0; 1205 } 1206 1207 /* 1208 * The following data structures and routines implement the 1209 * "display" command. 1210 */ 1211 1212 static int 1213 display(int argc, char *argv[]) 1214 { 1215 struct togglelist *tl; 1216 struct setlist *sl; 1217 1218 #define dotog(tl) if (tl->variable && tl->actionexplanation) { \ 1219 if (*tl->variable) { \ 1220 printf("will"); \ 1221 } else { \ 1222 printf("won't"); \ 1223 } \ 1224 printf(" %s.\n", tl->actionexplanation); \ 1225 } 1226 1227 #define doset(sl) if (sl->name && *sl->name != ' ') { \ 1228 if (sl->handler == 0) \ 1229 printf("%-15s [%s]\n", sl->name, control(*sl->charp)); \ 1230 else \ 1231 printf("%-15s \"%s\"\n", sl->name, (char *)sl->charp); \ 1232 } 1233 1234 if (argc == 1) { 1235 for (tl = Togglelist; tl->name; tl++) { 1236 dotog(tl); 1237 } 1238 printf("\n"); 1239 for (sl = Setlist; sl->name; sl++) { 1240 doset(sl); 1241 } 1242 } else { 1243 int i; 1244 1245 for (i = 1; i < argc; i++) { 1246 sl = getset(argv[i]); 1247 tl = GETTOGGLE(argv[i]); 1248 if (Ambiguous((void *)sl) || Ambiguous((void *)tl)) { 1249 printf("?Ambiguous argument '%s'.\n", argv[i]); 1250 return 0; 1251 } else if (!sl && !tl) { 1252 printf("?Unknown argument '%s'.\n", argv[i]); 1253 return 0; 1254 } else { 1255 if (tl) { 1256 dotog(tl); 1257 } 1258 if (sl) { 1259 doset(sl); 1260 } 1261 } 1262 } 1263 } 1264 /*@*/optionstatus(); 1265 #ifdef ENCRYPTION 1266 EncryptStatus(); 1267 #endif /* ENCRYPTION */ 1268 return 1; 1269 #undef doset 1270 #undef dotog 1271 } 1272 1273 /* 1274 * The following are the data structures, and many of the routines, 1275 * relating to command processing. 1276 */ 1277 1278 /* 1279 * Set the escape character. 1280 */ 1281 static int 1282 setescape(int argc, char *argv[]) 1283 { 1284 char *arg; 1285 char buf[50]; 1286 1287 printf( 1288 "Deprecated usage - please use 'set escape%s%s' in the future.\n", 1289 (argc > 2)? " ":"", (argc > 2)? argv[1]: ""); 1290 if (argc > 2) 1291 arg = argv[1]; 1292 else { 1293 printf("new escape character: "); 1294 (void) fgets(buf, sizeof(buf), stdin); 1295 arg = buf; 1296 } 1297 if (arg[0] != '\0') 1298 escape = arg[0]; 1299 (void) fflush(stdout); 1300 return 1; 1301 } 1302 1303 static int 1304 togcrmod(void) 1305 { 1306 crmod = !crmod; 1307 printf("Deprecated usage - please use 'toggle crmod' in the future.\n"); 1308 printf("%s map carriage return on output.\n", crmod ? "Will" : "Won't"); 1309 (void) fflush(stdout); 1310 return 1; 1311 } 1312 1313 static int 1314 suspend(void) 1315 { 1316 #ifdef SIGTSTP 1317 setcommandmode(); 1318 { 1319 long oldrows, oldcols, newrows, newcols, err_; 1320 1321 err_ = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 1322 (void) kill(0, SIGTSTP); 1323 /* 1324 * If we didn't get the window size before the SUSPEND, but we 1325 * can get them now (?), then send the NAWS to make sure that 1326 * we are set up for the right window size. 1327 */ 1328 if (TerminalWindowSize(&newrows, &newcols) && connected && 1329 (err_ || ((oldrows != newrows) || (oldcols != newcols)))) { 1330 sendnaws(); 1331 } 1332 } 1333 /* reget parameters in case they were changed */ 1334 TerminalSaveState(); 1335 setconnmode(0); 1336 #else 1337 printf("Suspend is not supported. Try the '!' command instead\n"); 1338 #endif 1339 return 1; 1340 } 1341 1342 static int 1343 shell(int argc, char *argv[] __unused) 1344 { 1345 long oldrows, oldcols, newrows, newcols, err_; 1346 1347 setcommandmode(); 1348 1349 err_ = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 1350 switch(vfork()) { 1351 case -1: 1352 perror("Fork failed\n"); 1353 break; 1354 1355 case 0: 1356 { 1357 /* 1358 * Fire up the shell in the child. 1359 */ 1360 const char *shellp, *shellname; 1361 1362 shellp = getenv("SHELL"); 1363 if (shellp == NULL) 1364 shellp = "/bin/sh"; 1365 if ((shellname = strrchr(shellp, '/')) == 0) 1366 shellname = shellp; 1367 else 1368 shellname++; 1369 if (argc > 1) 1370 execl(shellp, shellname, "-c", &saveline[1], (char *)0); 1371 else 1372 execl(shellp, shellname, (char *)0); 1373 perror("Execl"); 1374 _exit(1); 1375 } 1376 default: 1377 (void)wait((int *)0); /* Wait for the shell to complete */ 1378 1379 if (TerminalWindowSize(&newrows, &newcols) && connected && 1380 (err_ || ((oldrows != newrows) || (oldcols != newcols)))) { 1381 sendnaws(); 1382 } 1383 break; 1384 } 1385 return 1; 1386 } 1387 1388 static int 1389 bye(int argc, char *argv[]) 1390 { 1391 extern int resettermname; 1392 1393 if (connected) { 1394 (void) shutdown(net, 2); 1395 printf("Connection closed.\n"); 1396 (void) NetClose(net); 1397 connected = 0; 1398 resettermname = 1; 1399 #ifdef AUTHENTICATION 1400 #ifdef ENCRYPTION 1401 auth_encrypt_connect(connected); 1402 #endif 1403 #endif 1404 /* reset options */ 1405 tninit(); 1406 } 1407 if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) { 1408 longjmp(toplevel, 1); 1409 /* NOTREACHED */ 1410 } 1411 return 1; /* Keep lint, etc., happy */ 1412 } 1413 1414 void 1415 quit(void) 1416 { 1417 (void) call(bye, "bye", "fromquit", 0); 1418 Exit(0); 1419 } 1420 1421 static int 1422 logout(void) 1423 { 1424 send_do(TELOPT_LOGOUT, 1); 1425 (void) netflush(); 1426 return 1; 1427 } 1428 1429 1430 /* 1431 * The SLC command. 1432 */ 1433 1434 struct slclist { 1435 const char *name; 1436 const char *help; 1437 void (*handler)(int); 1438 int arg; 1439 }; 1440 1441 static void slc_help(void); 1442 1443 struct slclist SlcList[] = { 1444 { "export", "Use local special character definitions", 1445 (void (*)(int))slc_mode_export, 0 }, 1446 { "import", "Use remote special character definitions", 1447 slc_mode_import, 1 }, 1448 { "check", "Verify remote special character definitions", 1449 slc_mode_import, 0 }, 1450 { "help", NULL, (void (*)(int))slc_help, 0 }, 1451 { "?", "Print help information", (void (*)(int))slc_help, 0 }, 1452 { NULL, NULL, NULL, 0 }, 1453 }; 1454 1455 static void 1456 slc_help(void) 1457 { 1458 struct slclist *c; 1459 1460 for (c = SlcList; c->name; c++) { 1461 if (c->help) { 1462 if (*c->help) 1463 printf("%-15s %s\n", c->name, c->help); 1464 else 1465 printf("\n"); 1466 } 1467 } 1468 } 1469 1470 static struct slclist * 1471 getslc(char *name) 1472 { 1473 return (struct slclist *) 1474 genget(name, (char **) SlcList, sizeof(struct slclist)); 1475 } 1476 1477 static int 1478 slccmd(int argc, char *argv[]) 1479 { 1480 struct slclist *c; 1481 1482 if (argc != 2) { 1483 fprintf(stderr, 1484 "Need an argument to 'slc' command. 'slc ?' for help.\n"); 1485 return 0; 1486 } 1487 c = getslc(argv[1]); 1488 if (c == 0) { 1489 fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\n", 1490 argv[1]); 1491 return 0; 1492 } 1493 if (Ambiguous((void *)c)) { 1494 fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\n", 1495 argv[1]); 1496 return 0; 1497 } 1498 (*c->handler)(c->arg); 1499 slcstate(); 1500 return 1; 1501 } 1502 1503 /* 1504 * The ENVIRON command. 1505 */ 1506 1507 struct envlist { 1508 const char *name; 1509 const char *help; 1510 void (*handler)(unsigned char *, unsigned char *); 1511 int narg; 1512 }; 1513 1514 extern struct env_lst * 1515 env_define(const unsigned char *, unsigned char *); 1516 extern void 1517 env_undefine(unsigned char *), 1518 env_export(const unsigned char *), 1519 env_unexport(const unsigned char *), 1520 env_send(unsigned char *), 1521 #if defined(OLD_ENVIRON) && defined(ENV_HACK) 1522 env_varval(unsigned char *), 1523 #endif 1524 env_list(void); 1525 static void 1526 env_help(void); 1527 1528 struct envlist EnvList[] = { 1529 { "define", "Define an environment variable", 1530 (void (*)(unsigned char *, unsigned char *))env_define, 2 }, 1531 { "undefine", "Undefine an environment variable", 1532 (void (*)(unsigned char *, unsigned char *))env_undefine, 1 }, 1533 { "export", "Mark an environment variable for automatic export", 1534 (void (*)(unsigned char *, unsigned char *))env_export, 1 }, 1535 { "unexport", "Don't mark an environment variable for automatic export", 1536 (void (*)(unsigned char *, unsigned char *))env_unexport, 1 }, 1537 { "send", "Send an environment variable", (void (*)(unsigned char *, unsigned char *))env_send, 1 }, 1538 { "list", "List the current environment variables", 1539 (void (*)(unsigned char *, unsigned char *))env_list, 0 }, 1540 #if defined(OLD_ENVIRON) && defined(ENV_HACK) 1541 { "varval", "Reverse VAR and VALUE (auto, right, wrong, status)", 1542 (void (*)(unsigned char *, unsigned char *))env_varval, 1 }, 1543 #endif 1544 { "help", NULL, (void (*)(unsigned char *, unsigned char *))env_help, 0 }, 1545 { "?", "Print help information", (void (*)(unsigned char *, unsigned char *))env_help, 0 }, 1546 { NULL, NULL, NULL, 0 }, 1547 }; 1548 1549 static void 1550 env_help(void) 1551 { 1552 struct envlist *c; 1553 1554 for (c = EnvList; c->name; c++) { 1555 if (c->help) { 1556 if (*c->help) 1557 printf("%-15s %s\n", c->name, c->help); 1558 else 1559 printf("\n"); 1560 } 1561 } 1562 } 1563 1564 static struct envlist * 1565 getenvcmd(char *name) 1566 { 1567 return (struct envlist *) 1568 genget(name, (char **) EnvList, sizeof(struct envlist)); 1569 } 1570 1571 static int 1572 env_cmd(int argc, char *argv[]) 1573 { 1574 struct envlist *c; 1575 1576 if (argc < 2) { 1577 fprintf(stderr, 1578 "Need an argument to 'environ' command. 'environ ?' for help.\n"); 1579 return 0; 1580 } 1581 c = getenvcmd(argv[1]); 1582 if (c == 0) { 1583 fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\n", 1584 argv[1]); 1585 return 0; 1586 } 1587 if (Ambiguous((void *)c)) { 1588 fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\n", 1589 argv[1]); 1590 return 0; 1591 } 1592 if (c->narg + 2 != argc) { 1593 fprintf(stderr, 1594 "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\n", 1595 c->narg < argc + 2 ? "only " : "", 1596 c->narg, c->narg == 1 ? "" : "s", c->name); 1597 return 0; 1598 } 1599 (*c->handler)(argv[2], argv[3]); 1600 return 1; 1601 } 1602 1603 struct env_lst { 1604 struct env_lst *next; /* pointer to next structure */ 1605 struct env_lst *prev; /* pointer to previous structure */ 1606 unsigned char *var; /* pointer to variable name */ 1607 unsigned char *value; /* pointer to variable value */ 1608 int export; /* 1 -> export with default list of variables */ 1609 int welldefined; /* A well defined variable */ 1610 }; 1611 1612 struct env_lst envlisthead; 1613 1614 static struct env_lst * 1615 env_find(const unsigned char *var) 1616 { 1617 struct env_lst *ep; 1618 1619 for (ep = envlisthead.next; ep; ep = ep->next) { 1620 if (strcmp(ep->var, var) == 0) 1621 return(ep); 1622 } 1623 return(NULL); 1624 } 1625 1626 void 1627 env_init(void) 1628 { 1629 extern char **environ; 1630 char **epp, *cp; 1631 struct env_lst *ep; 1632 1633 for (epp = environ; *epp; epp++) { 1634 if ((cp = strchr(*epp, '='))) { 1635 *cp = '\0'; 1636 ep = env_define((unsigned char *)*epp, 1637 (unsigned char *)cp+1); 1638 ep->export = 0; 1639 *cp = '='; 1640 } 1641 } 1642 /* 1643 * Special case for DISPLAY variable. If it is ":0.0" or 1644 * "unix:0.0", we have to get rid of "unix" and insert our 1645 * hostname. 1646 */ 1647 if ((ep = env_find("DISPLAY")) 1648 && ((*ep->value == ':') 1649 || (strncmp((char *)ep->value, "unix:", 5) == 0))) { 1650 char hbuf[256+1]; 1651 char *cp2 = strchr((char *)ep->value, ':'); 1652 1653 gethostname(hbuf, sizeof(hbuf)); 1654 hbuf[sizeof(hbuf)-1] = '\0'; 1655 asprintf(&cp, "%s%s", hbuf, cp2); 1656 assert(cp != NULL); 1657 free(ep->value); 1658 ep->value = (unsigned char *)cp; 1659 } 1660 /* 1661 * If USER is not defined, but LOGNAME is, then add 1662 * USER with the value from LOGNAME. By default, we 1663 * don't export the USER variable. 1664 */ 1665 if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) { 1666 env_define("USER", ep->value); 1667 env_unexport("USER"); 1668 } 1669 env_export("DISPLAY"); 1670 env_export("PRINTER"); 1671 } 1672 1673 struct env_lst * 1674 env_define(const unsigned char *var, unsigned char *value) 1675 { 1676 struct env_lst *ep; 1677 1678 if ((ep = env_find(var))) { 1679 if (ep->var) 1680 free(ep->var); 1681 if (ep->value) 1682 free(ep->value); 1683 } else { 1684 ep = (struct env_lst *)malloc(sizeof(struct env_lst)); 1685 ep->next = envlisthead.next; 1686 envlisthead.next = ep; 1687 ep->prev = &envlisthead; 1688 if (ep->next) 1689 ep->next->prev = ep; 1690 } 1691 ep->welldefined = opt_welldefined(var); 1692 ep->export = 1; 1693 ep->var = strdup(var); 1694 ep->value = strdup(value); 1695 return(ep); 1696 } 1697 1698 void 1699 env_undefine(unsigned char *var) 1700 { 1701 struct env_lst *ep; 1702 1703 if ((ep = env_find(var))) { 1704 ep->prev->next = ep->next; 1705 if (ep->next) 1706 ep->next->prev = ep->prev; 1707 if (ep->var) 1708 free(ep->var); 1709 if (ep->value) 1710 free(ep->value); 1711 free(ep); 1712 } 1713 } 1714 1715 void 1716 env_export(const unsigned char *var) 1717 { 1718 struct env_lst *ep; 1719 1720 if ((ep = env_find(var))) 1721 ep->export = 1; 1722 } 1723 1724 void 1725 env_unexport(const unsigned char *var) 1726 { 1727 struct env_lst *ep; 1728 1729 if ((ep = env_find(var))) 1730 ep->export = 0; 1731 } 1732 1733 void 1734 env_send(unsigned char *var) 1735 { 1736 struct env_lst *ep; 1737 1738 if (my_state_is_wont(TELOPT_NEW_ENVIRON) 1739 #ifdef OLD_ENVIRON 1740 && my_state_is_wont(TELOPT_OLD_ENVIRON) 1741 #endif 1742 ) { 1743 fprintf(stderr, 1744 "Cannot send '%s': Telnet ENVIRON option not enabled\n", 1745 var); 1746 return; 1747 } 1748 ep = env_find(var); 1749 if (ep == 0) { 1750 fprintf(stderr, "Cannot send '%s': variable not defined\n", 1751 var); 1752 return; 1753 } 1754 env_opt_start_info(); 1755 env_opt_add(ep->var); 1756 env_opt_end(0); 1757 } 1758 1759 void 1760 env_list(void) 1761 { 1762 struct env_lst *ep; 1763 1764 for (ep = envlisthead.next; ep; ep = ep->next) { 1765 printf("%c %-20s %s\n", ep->export ? '*' : ' ', 1766 ep->var, ep->value); 1767 } 1768 } 1769 1770 unsigned char * 1771 env_default(int init, int welldefined) 1772 { 1773 static struct env_lst *nep = NULL; 1774 1775 if (init) { 1776 nep = &envlisthead; 1777 return(NULL); 1778 } 1779 if (nep) { 1780 while ((nep = nep->next)) { 1781 if (nep->export && (nep->welldefined == welldefined)) 1782 return(nep->var); 1783 } 1784 } 1785 return(NULL); 1786 } 1787 1788 unsigned char * 1789 env_getvalue(const unsigned char *var) 1790 { 1791 struct env_lst *ep; 1792 1793 if ((ep = env_find(var))) 1794 return(ep->value); 1795 return(NULL); 1796 } 1797 1798 #if defined(OLD_ENVIRON) && defined(ENV_HACK) 1799 void 1800 env_varval(unsigned char *what) 1801 { 1802 extern int old_env_var, old_env_value, env_auto; 1803 int len = strlen((char *)what); 1804 1805 if (len == 0) 1806 goto unknown; 1807 1808 if (strncasecmp((char *)what, "status", len) == 0) { 1809 if (env_auto) 1810 printf("%s%s", "VAR and VALUE are/will be ", 1811 "determined automatically\n"); 1812 if (old_env_var == OLD_ENV_VAR) 1813 printf("VAR and VALUE set to correct definitions\n"); 1814 else 1815 printf("VAR and VALUE definitions are reversed\n"); 1816 } else if (strncasecmp((char *)what, "auto", len) == 0) { 1817 env_auto = 1; 1818 old_env_var = OLD_ENV_VALUE; 1819 old_env_value = OLD_ENV_VAR; 1820 } else if (strncasecmp((char *)what, "right", len) == 0) { 1821 env_auto = 0; 1822 old_env_var = OLD_ENV_VAR; 1823 old_env_value = OLD_ENV_VALUE; 1824 } else if (strncasecmp((char *)what, "wrong", len) == 0) { 1825 env_auto = 0; 1826 old_env_var = OLD_ENV_VALUE; 1827 old_env_value = OLD_ENV_VAR; 1828 } else { 1829 unknown: 1830 printf("Unknown \"varval\" command. (\"auto\", \"right\", \"wrong\", \"status\")\n"); 1831 } 1832 } 1833 #endif 1834 1835 #ifdef AUTHENTICATION 1836 /* 1837 * The AUTHENTICATE command. 1838 */ 1839 1840 struct authlist { 1841 const char *name; 1842 const char *help; 1843 int (*handler)(char *); 1844 int narg; 1845 }; 1846 1847 extern int 1848 auth_enable(char *), 1849 auth_disable(char *), 1850 auth_status(void); 1851 static int 1852 auth_help(void); 1853 1854 struct authlist AuthList[] = { 1855 { "status", "Display current status of authentication information", 1856 (int (*)(char *))auth_status, 0 }, 1857 { "disable", "Disable an authentication type ('auth disable ?' for more)", 1858 auth_disable, 1 }, 1859 { "enable", "Enable an authentication type ('auth enable ?' for more)", 1860 auth_enable, 1 }, 1861 { "help", NULL, (int (*)(char *))auth_help, 0 }, 1862 { "?", "Print help information", (int (*)(char *))auth_help, 0 }, 1863 { NULL, NULL, NULL, 0 }, 1864 }; 1865 1866 static int 1867 auth_help(void) 1868 { 1869 struct authlist *c; 1870 1871 for (c = AuthList; c->name; c++) { 1872 if (c->help) { 1873 if (*c->help) 1874 printf("%-15s %s\n", c->name, c->help); 1875 else 1876 printf("\n"); 1877 } 1878 } 1879 return 0; 1880 } 1881 1882 int 1883 auth_cmd(int argc, char *argv[]) 1884 { 1885 struct authlist *c; 1886 1887 if (argc < 2) { 1888 fprintf(stderr, 1889 "Need an argument to 'auth' command. 'auth ?' for help.\n"); 1890 return 0; 1891 } 1892 1893 c = (struct authlist *) 1894 genget(argv[1], (char **) AuthList, sizeof(struct authlist)); 1895 if (c == 0) { 1896 fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\n", 1897 argv[1]); 1898 return 0; 1899 } 1900 if (Ambiguous((void *)c)) { 1901 fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\n", 1902 argv[1]); 1903 return 0; 1904 } 1905 if (c->narg + 2 != argc) { 1906 fprintf(stderr, 1907 "Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\n", 1908 c->narg < argc + 2 ? "only " : "", 1909 c->narg, c->narg == 1 ? "" : "s", c->name); 1910 return 0; 1911 } 1912 return((*c->handler)(argv[2])); 1913 } 1914 #endif 1915 1916 #ifdef ENCRYPTION 1917 /* 1918 * The ENCRYPT command. 1919 */ 1920 1921 struct encryptlist { 1922 const char *name; 1923 const char *help; 1924 int (*handler)(char *, char *); 1925 int needconnect; 1926 int minarg; 1927 int maxarg; 1928 }; 1929 1930 extern int 1931 EncryptEnable(char *, char *), 1932 EncryptDisable(char *, char *), 1933 EncryptType(char *, char *), 1934 EncryptStart(char *), 1935 EncryptStartInput(void), 1936 EncryptStartOutput(void), 1937 EncryptStop(char *), 1938 EncryptStopInput(void), 1939 EncryptStopOutput(void), 1940 EncryptStatus(void); 1941 static int 1942 EncryptHelp(void); 1943 1944 struct encryptlist EncryptList[] = { 1945 { "enable", "Enable encryption. ('encrypt enable ?' for more)", 1946 EncryptEnable, 1, 1, 2 }, 1947 { "disable", "Disable encryption. ('encrypt enable ?' for more)", 1948 EncryptDisable, 0, 1, 2 }, 1949 { "type", "Set encryption type. ('encrypt type ?' for more)", 1950 EncryptType, 0, 1, 1 }, 1951 { "start", "Start encryption. ('encrypt start ?' for more)", 1952 (int (*)(char *, char *))EncryptStart, 1, 0, 1 }, 1953 { "stop", "Stop encryption. ('encrypt stop ?' for more)", 1954 (int (*)(char *, char *))EncryptStop, 1, 0, 1 }, 1955 { "input", "Start encrypting the input stream", 1956 (int (*)(char *, char *))EncryptStartInput, 1, 0, 0 }, 1957 { "-input", "Stop encrypting the input stream", 1958 (int (*)(char *, char *))EncryptStopInput, 1, 0, 0 }, 1959 { "output", "Start encrypting the output stream", 1960 (int (*)(char *, char *))EncryptStartOutput, 1, 0, 0 }, 1961 { "-output", "Stop encrypting the output stream", 1962 (int (*)(char *, char *))EncryptStopOutput, 1, 0, 0 }, 1963 1964 { "status", "Display current status of authentication information", 1965 (int (*)(char *, char *))EncryptStatus, 0, 0, 0 }, 1966 { "help", NULL, (int (*)(char *, char *))EncryptHelp, 0, 0, 0 }, 1967 { "?", "Print help information", (int (*)(char *, char *))EncryptHelp, 0, 0, 0 }, 1968 { NULL, NULL, NULL, 0, 0, 0 }, 1969 }; 1970 1971 static int 1972 EncryptHelp(void) 1973 { 1974 struct encryptlist *c; 1975 1976 for (c = EncryptList; c->name; c++) { 1977 if (c->help) { 1978 if (*c->help) 1979 printf("%-15s %s\n", c->name, c->help); 1980 else 1981 printf("\n"); 1982 } 1983 } 1984 return 0; 1985 } 1986 1987 static int 1988 encrypt_cmd(int argc, char *argv[]) 1989 { 1990 struct encryptlist *c; 1991 1992 if (argc < 2) { 1993 fprintf(stderr, 1994 "Need an argument to 'encrypt' command. 'encrypt ?' for help.\n"); 1995 return 0; 1996 } 1997 1998 c = (struct encryptlist *) 1999 genget(argv[1], (char **) EncryptList, sizeof(struct encryptlist)); 2000 if (c == 0) { 2001 fprintf(stderr, "'%s': unknown argument ('encrypt ?' for help).\n", 2002 argv[1]); 2003 return 0; 2004 } 2005 if (Ambiguous((void *)c)) { 2006 fprintf(stderr, "'%s': ambiguous argument ('encrypt ?' for help).\n", 2007 argv[1]); 2008 return 0; 2009 } 2010 argc -= 2; 2011 if (argc < c->minarg || argc > c->maxarg) { 2012 if (c->minarg == c->maxarg) { 2013 fprintf(stderr, "Need %s%d argument%s ", 2014 c->minarg < argc ? "only " : "", c->minarg, 2015 c->minarg == 1 ? "" : "s"); 2016 } else { 2017 fprintf(stderr, "Need %s%d-%d arguments ", 2018 c->maxarg < argc ? "only " : "", c->minarg, c->maxarg); 2019 } 2020 fprintf(stderr, "to 'encrypt %s' command. 'encrypt ?' for help.\n", 2021 c->name); 2022 return 0; 2023 } 2024 if (c->needconnect && !connected) { 2025 if (!(argc && (isprefix(argv[2], "help") || isprefix(argv[2], "?")))) { 2026 printf("?Need to be connected first.\n"); 2027 return 0; 2028 } 2029 } 2030 return ((*c->handler)(argc > 0 ? argv[2] : 0, 2031 argc > 1 ? argv[3] : 0)); 2032 } 2033 #endif /* ENCRYPTION */ 2034 2035 /* 2036 * Print status about the connection. 2037 */ 2038 /*ARGSUSED*/ 2039 static int 2040 status(int argc, char *argv[]) 2041 { 2042 if (connected) { 2043 if (!quiet_mode) 2044 printf("Connected to %s.\n", hostname); 2045 if ((argc < 2) || strcmp(argv[1], "notmuch")) { 2046 int mode = getconnmode(); 2047 2048 if (my_want_state_is_will(TELOPT_LINEMODE)) { 2049 printf("Operating with LINEMODE option\n"); 2050 printf("%s line editing\n", (mode&MODE_EDIT) ? "Local" : "No"); 2051 printf("%s catching of signals\n", 2052 (mode&MODE_TRAPSIG) ? "Local" : "No"); 2053 slcstate(); 2054 #ifdef KLUDGELINEMODE 2055 } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) { 2056 printf("Operating in obsolete linemode\n"); 2057 #endif 2058 } else { 2059 printf("Operating in single character mode\n"); 2060 if (localchars) 2061 printf("Catching signals locally\n"); 2062 } 2063 printf("%s character echo\n", (mode&MODE_ECHO) ? "Local" : "Remote"); 2064 if (my_want_state_is_will(TELOPT_LFLOW)) 2065 printf("%s flow control\n", (mode&MODE_FLOW) ? "Local" : "No"); 2066 #ifdef ENCRYPTION 2067 encrypt_display(); 2068 #endif /* ENCRYPTION */ 2069 } 2070 } else { 2071 printf("No connection.\n"); 2072 } 2073 if (!quiet_mode) 2074 printf("Escape character is '%s'.\n", control(escape)); 2075 (void) fflush(stdout); 2076 return 1; 2077 } 2078 2079 #ifdef SIGINFO 2080 /* 2081 * Function that gets called when SIGINFO is received. 2082 */ 2083 void 2084 ayt_status(void) 2085 { 2086 (void) call(status, "status", "notmuch", 0); 2087 } 2088 #endif 2089 2090 static const char * 2091 sockaddr_ntop(struct sockaddr *sa) 2092 { 2093 void *addr; 2094 static char addrbuf[INET6_ADDRSTRLEN]; 2095 2096 switch (sa->sa_family) { 2097 case AF_INET: 2098 addr = &((struct sockaddr_in *)sa)->sin_addr; 2099 break; 2100 case AF_UNIX: 2101 addr = &((struct sockaddr_un *)sa)->sun_path; 2102 break; 2103 #ifdef INET6 2104 case AF_INET6: 2105 addr = &((struct sockaddr_in6 *)sa)->sin6_addr; 2106 break; 2107 #endif 2108 default: 2109 return NULL; 2110 } 2111 inet_ntop(sa->sa_family, addr, addrbuf, sizeof(addrbuf)); 2112 return addrbuf; 2113 } 2114 2115 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 2116 static int 2117 setpolicy(int lnet, struct addrinfo *res, char *policy) 2118 { 2119 char *buf; 2120 int level; 2121 int optname; 2122 2123 if (policy == NULL) 2124 return 0; 2125 2126 buf = ipsec_set_policy(policy, strlen(policy)); 2127 if (buf == NULL) { 2128 printf("%s\n", ipsec_strerror()); 2129 return -1; 2130 } 2131 level = res->ai_family == AF_INET ? IPPROTO_IP : IPPROTO_IPV6; 2132 optname = res->ai_family == AF_INET ? IP_IPSEC_POLICY : IPV6_IPSEC_POLICY; 2133 if (setsockopt(lnet, level, optname, buf, ipsec_get_policylen(buf)) < 0){ 2134 perror("setsockopt"); 2135 return -1; 2136 } 2137 2138 free(buf); 2139 return 0; 2140 } 2141 #endif 2142 2143 #ifdef INET6 2144 /* 2145 * When an Address Family related error happend, check if retry with 2146 * another AF is possible or not. 2147 * Return 1, if retry with another af is OK. Else, return 0. 2148 */ 2149 static int 2150 switch_af(struct addrinfo **aip) 2151 { 2152 int nextaf; 2153 struct addrinfo *ai; 2154 2155 ai = *aip; 2156 nextaf = (ai->ai_family == AF_INET) ? AF_INET6 : AF_INET; 2157 do 2158 ai=ai->ai_next; 2159 while (ai != NULL && ai->ai_family != nextaf); 2160 *aip = ai; 2161 if (*aip != NULL) { 2162 return 1; 2163 } 2164 return 0; 2165 } 2166 #endif 2167 2168 int 2169 tn(int argc, char *argv[]) 2170 { 2171 unsigned char *srp = 0; 2172 int proto, opt; 2173 int srlen; 2174 int srcroute = 0, result; 2175 char *cmd, *hostp = 0, *portp = 0, *user = 0; 2176 char *src_addr = NULL; 2177 struct addrinfo hints, *res, *res0 = NULL, *src_res, *src_res0 = NULL; 2178 int error = 0, af_error = 0; 2179 2180 if (connected) { 2181 printf("?Already connected to %s\n", hostname); 2182 setuid(getuid()); 2183 return 0; 2184 } 2185 if (argc < 2) { 2186 (void) strcpy(line, "open "); 2187 printf("(to) "); 2188 (void) fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin); 2189 makeargv(); 2190 argc = margc; 2191 argv = margv; 2192 } 2193 cmd = *argv; 2194 --argc; ++argv; 2195 while (argc) { 2196 if (strcmp(*argv, "help") == 0 || isprefix(*argv, "?")) 2197 goto usage; 2198 if (strcmp(*argv, "-l") == 0) { 2199 --argc; ++argv; 2200 if (argc == 0) 2201 goto usage; 2202 user = *argv++; 2203 --argc; 2204 continue; 2205 } 2206 if (strcmp(*argv, "-a") == 0) { 2207 --argc; ++argv; 2208 autologin = 1; 2209 continue; 2210 } 2211 if (strcmp(*argv, "-s") == 0) { 2212 --argc; ++argv; 2213 if (argc == 0) 2214 goto usage; 2215 src_addr = *argv++; 2216 --argc; 2217 continue; 2218 } 2219 if (hostp == 0) { 2220 hostp = *argv++; 2221 --argc; 2222 continue; 2223 } 2224 if (portp == 0) { 2225 portp = *argv++; 2226 --argc; 2227 continue; 2228 } 2229 usage: 2230 printf("usage: %s [-l user] [-a] [-s src_addr] host-name [port]\n", cmd); 2231 setuid(getuid()); 2232 return 0; 2233 } 2234 if (hostp == 0) 2235 goto usage; 2236 2237 if (src_addr != NULL) { 2238 memset(&hints, 0, sizeof(hints)); 2239 hints.ai_family = family; 2240 hints.ai_socktype = SOCK_STREAM; 2241 error = getaddrinfo(src_addr, 0, &hints, &src_res); 2242 if (error == EAI_NONAME) { 2243 hints.ai_flags = 0; 2244 error = getaddrinfo(src_addr, 0, &hints, &src_res); 2245 } 2246 if (error != 0) { 2247 fprintf(stderr, "%s: %s\n", src_addr, gai_strerror(error)); 2248 if (error == EAI_SYSTEM) 2249 fprintf(stderr, "%s: %s\n", src_addr, strerror(errno)); 2250 setuid(getuid()); 2251 return 0; 2252 } 2253 src_res0 = src_res; 2254 } 2255 if (hostp[0] == '/') { 2256 struct sockaddr_un su; 2257 2258 if (strlen(hostp) >= sizeof(su.sun_path)) { 2259 fprintf(stderr, "hostname too long for unix domain socket: %s", 2260 hostp); 2261 goto fail; 2262 } 2263 hostname = hostp; 2264 memset(&su, 0, sizeof su); 2265 su.sun_family = AF_UNIX; 2266 strncpy(su.sun_path, hostp, sizeof su.sun_path); 2267 if (!quiet_mode) 2268 printf("Trying %s...\n", hostp); 2269 net = socket(PF_UNIX, SOCK_STREAM, 0); 2270 if ( net < 0) { 2271 perror("socket"); 2272 goto fail; 2273 } 2274 if (connect(net, (struct sockaddr *)&su, sizeof su) == -1) { 2275 perror(su.sun_path); 2276 (void) NetClose(net); 2277 goto fail; 2278 } 2279 goto af_unix; 2280 } else if (hostp[0] == '@' || hostp[0] == '!') { 2281 if ( 2282 #ifdef INET6 2283 family == AF_INET6 || 2284 #endif 2285 (hostname = strrchr(hostp, ':')) == NULL) 2286 hostname = strrchr(hostp, '@'); 2287 if (hostname == NULL) { 2288 hostname = hostp; 2289 } else { 2290 hostname++; 2291 srcroute = 1; 2292 } 2293 } else 2294 hostname = hostp; 2295 if (!portp) { 2296 telnetport = 1; 2297 portp = strdup("telnet"); 2298 } else if (*portp == '-') { 2299 portp++; 2300 telnetport = 1; 2301 } else if (*portp == '+') { 2302 portp++; 2303 telnetport = -1; 2304 } else 2305 telnetport = 0; 2306 2307 memset(&hints, 0, sizeof(hints)); 2308 hints.ai_flags = AI_NUMERICHOST; 2309 hints.ai_family = family; 2310 hints.ai_socktype = SOCK_STREAM; 2311 error = getaddrinfo(hostname, portp, &hints, &res); 2312 if (error) { 2313 hints.ai_flags = AI_CANONNAME; 2314 error = getaddrinfo(hostname, portp, &hints, &res); 2315 } 2316 if (error != 0) { 2317 fprintf(stderr, "%s: %s\n", hostname, gai_strerror(error)); 2318 if (error == EAI_SYSTEM) 2319 fprintf(stderr, "%s: %s\n", hostname, strerror(errno)); 2320 setuid(getuid()); 2321 goto fail; 2322 } 2323 if (hints.ai_flags == AI_NUMERICHOST) { 2324 /* hostname has numeric */ 2325 int gni_err = 1; 2326 2327 if (doaddrlookup) 2328 gni_err = getnameinfo(res->ai_addr, res->ai_addr->sa_len, 2329 _hostname, sizeof(_hostname) - 1, NULL, 0, 2330 NI_NAMEREQD); 2331 if (gni_err != 0) 2332 (void) strncpy(_hostname, hostp, sizeof(_hostname) - 1); 2333 _hostname[sizeof(_hostname)-1] = '\0'; 2334 hostname = _hostname; 2335 } else { 2336 /* hostname has FQDN */ 2337 if (srcroute != 0) 2338 (void) strncpy(_hostname, hostname, sizeof(_hostname) - 1); 2339 else if (res->ai_canonname != NULL) 2340 strcpy(_hostname, res->ai_canonname); 2341 else 2342 (void) strncpy(_hostname, hostp, sizeof(_hostname) - 1); 2343 _hostname[sizeof(_hostname)-1] = '\0'; 2344 hostname = _hostname; 2345 } 2346 res0 = res; 2347 #ifdef INET6 2348 af_again: 2349 #endif 2350 if (srcroute != 0) { 2351 static char hostbuf[BUFSIZ]; 2352 2353 if (af_error == 0) { /* save intermediate hostnames for retry */ 2354 strncpy(hostbuf, hostp, BUFSIZ - 1); 2355 hostbuf[BUFSIZ - 1] = '\0'; 2356 } else 2357 hostp = hostbuf; 2358 srp = 0; 2359 result = sourceroute(res, hostp, &srp, &srlen, &proto, &opt); 2360 if (result == 0) { 2361 #ifdef INET6 2362 if (family == AF_UNSPEC && af_error == 0 && 2363 switch_af(&res) == 1) { 2364 af_error = 1; 2365 goto af_again; 2366 } 2367 #endif 2368 setuid(getuid()); 2369 goto fail; 2370 } else if (result == -1) { 2371 printf("Bad source route option: %s\n", hostp); 2372 setuid(getuid()); 2373 goto fail; 2374 } 2375 } 2376 do { 2377 if (!quiet_mode) 2378 printf("Trying %s...\n", sockaddr_ntop(res->ai_addr)); 2379 net = socket(res->ai_family, res->ai_socktype, res->ai_protocol); 2380 setuid(getuid()); 2381 if (net < 0) { 2382 #ifdef INET6 2383 if (family == AF_UNSPEC && af_error == 0 && 2384 switch_af(&res) == 1) { 2385 af_error = 1; 2386 goto af_again; 2387 } 2388 #endif 2389 perror("telnet: socket"); 2390 goto fail; 2391 } 2392 if (srp && setsockopt(net, proto, opt, (char *)srp, srlen) < 0) 2393 perror("setsockopt (source route)"); 2394 #if defined(IPPROTO_IP) && defined(IP_TOS) 2395 if (res->ai_family == PF_INET) { 2396 # if defined(HAS_GETTOS) 2397 struct tosent *tp; 2398 if (tos < 0 && (tp = gettosbyname("telnet", "tcp"))) 2399 tos = tp->t_tos; 2400 # endif 2401 if (tos < 0) 2402 tos = IPTOS_LOWDELAY; 2403 if (tos 2404 && (setsockopt(net, IPPROTO_IP, IP_TOS, 2405 (char *)&tos, sizeof(int)) < 0) 2406 && (errno != ENOPROTOOPT)) 2407 perror("telnet: setsockopt (IP_TOS) (ignored)"); 2408 } 2409 #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 2410 2411 if (telnet_debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) { 2412 perror("setsockopt (SO_DEBUG)"); 2413 } 2414 2415 if (src_addr != NULL) { 2416 for (src_res = src_res0; src_res != 0; src_res = src_res->ai_next) 2417 if (src_res->ai_family == res->ai_family) 2418 break; 2419 if (src_res == NULL) 2420 src_res = src_res0; 2421 if (bind(net, src_res->ai_addr, src_res->ai_addrlen) == -1) { 2422 #ifdef INET6 2423 if (family == AF_UNSPEC && af_error == 0 && 2424 switch_af(&res) == 1) { 2425 af_error = 1; 2426 (void) NetClose(net); 2427 goto af_again; 2428 } 2429 #endif 2430 perror("bind"); 2431 (void) NetClose(net); 2432 goto fail; 2433 } 2434 } 2435 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 2436 if (setpolicy(net, res, ipsec_policy_in) < 0) { 2437 (void) NetClose(net); 2438 goto fail; 2439 } 2440 if (setpolicy(net, res, ipsec_policy_out) < 0) { 2441 (void) NetClose(net); 2442 goto fail; 2443 } 2444 #endif 2445 2446 if (connect(net, res->ai_addr, res->ai_addrlen) < 0) { 2447 struct addrinfo *next; 2448 2449 next = res->ai_next; 2450 /* If already an af failed, only try same af. */ 2451 if (af_error != 0) 2452 while (next != NULL && next->ai_family != res->ai_family) 2453 next = next->ai_next; 2454 warn("connect to address %s", sockaddr_ntop(res->ai_addr)); 2455 if (next != NULL) { 2456 res = next; 2457 (void) NetClose(net); 2458 continue; 2459 } 2460 warnx("Unable to connect to remote host"); 2461 (void) NetClose(net); 2462 goto fail; 2463 } 2464 connected++; 2465 #ifdef AUTHENTICATION 2466 #ifdef ENCRYPTION 2467 auth_encrypt_connect(connected); 2468 #endif 2469 #endif 2470 } while (connected == 0); 2471 freeaddrinfo(res0); 2472 if (src_res0 != NULL) 2473 freeaddrinfo(src_res0); 2474 cmdrc(hostp, hostname); 2475 af_unix: 2476 connected = 1; 2477 if (autologin && user == NULL) { 2478 struct passwd *pw; 2479 2480 user = getenv("USER"); 2481 if (user == NULL || 2482 ((pw = getpwnam(user)) && pw->pw_uid != getuid())) { 2483 if ((pw = getpwuid(getuid()))) 2484 user = pw->pw_name; 2485 else 2486 user = NULL; 2487 } 2488 } 2489 if (user) { 2490 env_define("USER", user); 2491 env_export("USER"); 2492 } 2493 (void) call(status, "status", "notmuch", 0); 2494 telnet(user); 2495 (void) NetClose(net); 2496 if (quiet_mode) 2497 ExitString("",1); 2498 else 2499 ExitString("Connection closed by foreign host.\n",1); 2500 /*NOTREACHED*/ 2501 fail: 2502 if (res0 != NULL) 2503 freeaddrinfo(res0); 2504 if (src_res0 != NULL) 2505 freeaddrinfo(src_res0); 2506 return 0; 2507 } 2508 2509 #define HELPINDENT (sizeof ("connect")) 2510 2511 static char 2512 openhelp[] = "connect to a site", 2513 closehelp[] = "close current connection", 2514 logouthelp[] = "forcibly logout remote user and close the connection", 2515 quithelp[] = "exit telnet", 2516 statushelp[] = "print status information", 2517 helphelp[] = "print help information", 2518 sendhelp[] = "transmit special characters ('send ?' for more)", 2519 sethelp[] = "set operating parameters ('set ?' for more)", 2520 unsethelp[] = "unset operating parameters ('unset ?' for more)", 2521 togglestring[] ="toggle operating parameters ('toggle ?' for more)", 2522 slchelp[] = "change state of special charaters ('slc ?' for more)", 2523 displayhelp[] = "display operating parameters", 2524 #ifdef AUTHENTICATION 2525 authhelp[] = "turn on (off) authentication ('auth ?' for more)", 2526 #endif 2527 #ifdef ENCRYPTION 2528 encrypthelp[] = "turn on (off) encryption ('encrypt ?' for more)", 2529 #endif /* ENCRYPTION */ 2530 zhelp[] = "suspend telnet", 2531 #ifdef OPIE 2532 opiehelp[] = "compute response to OPIE challenge", 2533 #endif 2534 shellhelp[] = "invoke a subshell", 2535 envhelp[] = "change environment variables ('environ ?' for more)", 2536 modestring[] = "try to enter line or character mode ('mode ?' for more)"; 2537 2538 static Command cmdtab[] = { 2539 { "close", closehelp, bye, 1 }, 2540 { "logout", logouthelp, (int (*)(int, char **))logout, 1 }, 2541 { "display", displayhelp, display, 0 }, 2542 { "mode", modestring, modecmd, 0 }, 2543 { "telnet", openhelp, tn, 0 }, 2544 { "open", openhelp, tn, 0 }, 2545 { "quit", quithelp, (int (*)(int, char **))quit, 0 }, 2546 { "send", sendhelp, sendcmd, 0 }, 2547 { "set", sethelp, setcmd, 0 }, 2548 { "unset", unsethelp, unsetcmd, 0 }, 2549 { "status", statushelp, status, 0 }, 2550 { "toggle", togglestring, toggle, 0 }, 2551 { "slc", slchelp, slccmd, 0 }, 2552 #ifdef AUTHENTICATION 2553 { "auth", authhelp, auth_cmd, 0 }, 2554 #endif 2555 #ifdef ENCRYPTION 2556 { "encrypt", encrypthelp, encrypt_cmd, 0 }, 2557 #endif /* ENCRYPTION */ 2558 { "z", zhelp, (int (*)(int, char **))suspend, 0 }, 2559 { "!", shellhelp, shell, 1 }, 2560 { "environ", envhelp, env_cmd, 0 }, 2561 { "?", helphelp, help, 0 }, 2562 #ifdef OPIE 2563 { "opie", opiehelp, opie_calc, 0 }, 2564 #endif 2565 { NULL, NULL, NULL, 0 } 2566 }; 2567 2568 static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead"; 2569 static char escapehelp[] = "deprecated command -- use 'set escape' instead"; 2570 2571 static Command cmdtab2[] = { 2572 { "help", 0, help, 0 }, 2573 { "escape", escapehelp, setescape, 0 }, 2574 { "crmod", crmodhelp, (int (*)(int, char **))togcrmod, 0 }, 2575 { NULL, NULL, NULL, 0 } 2576 }; 2577 2578 2579 /* 2580 * Call routine with argc, argv set from args (terminated by 0). 2581 */ 2582 2583 static int 2584 call(intrtn_t routine, ...) 2585 { 2586 va_list ap; 2587 char *args[100]; 2588 int argno = 0; 2589 2590 va_start(ap, routine); 2591 while ((args[argno++] = va_arg(ap, char *)) != 0); 2592 va_end(ap); 2593 return (*routine)(argno-1, args); 2594 } 2595 2596 2597 static Command * 2598 getcmd(char *name) 2599 { 2600 Command *cm; 2601 2602 if ((cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command)))) 2603 return cm; 2604 return (Command *) genget(name, (char **) cmdtab2, sizeof(Command)); 2605 } 2606 2607 void 2608 command(int top, const char *tbuf, int cnt) 2609 { 2610 Command *c; 2611 2612 setcommandmode(); 2613 if (!top) { 2614 putchar('\n'); 2615 } else { 2616 (void) signal(SIGINT, SIG_DFL); 2617 (void) signal(SIGQUIT, SIG_DFL); 2618 } 2619 for (;;) { 2620 if (rlogin == _POSIX_VDISABLE) 2621 printf("%s> ", prompt); 2622 if (tbuf) { 2623 char *cp; 2624 cp = line; 2625 while (cnt > 0 && (*cp++ = *tbuf++) != '\n') 2626 cnt--; 2627 tbuf = 0; 2628 if (cp == line || *--cp != '\n' || cp == line) 2629 goto getline; 2630 *cp = '\0'; 2631 if (rlogin == _POSIX_VDISABLE) 2632 printf("%s\n", line); 2633 } else { 2634 getline: 2635 if (rlogin != _POSIX_VDISABLE) 2636 printf("%s> ", prompt); 2637 if (fgets(line, sizeof(line), stdin) == NULL) { 2638 if (feof(stdin) || ferror(stdin)) { 2639 (void) quit(); 2640 /*NOTREACHED*/ 2641 } 2642 break; 2643 } 2644 } 2645 if (line[0] == 0) 2646 break; 2647 makeargv(); 2648 if (margv[0] == 0) { 2649 break; 2650 } 2651 c = getcmd(margv[0]); 2652 if (Ambiguous((void *)c)) { 2653 printf("?Ambiguous command\n"); 2654 continue; 2655 } 2656 if (c == 0) { 2657 printf("?Invalid command\n"); 2658 continue; 2659 } 2660 if (c->needconnect && !connected) { 2661 printf("?Need to be connected first.\n"); 2662 continue; 2663 } 2664 if ((*c->handler)(margc, margv)) { 2665 break; 2666 } 2667 } 2668 if (!top) { 2669 if (!connected) { 2670 longjmp(toplevel, 1); 2671 /*NOTREACHED*/ 2672 } 2673 setconnmode(0); 2674 } 2675 } 2676 2677 /* 2678 * Help command. 2679 */ 2680 static int 2681 help(int argc, char *argv[]) 2682 { 2683 Command *c; 2684 2685 if (argc == 1) { 2686 printf("Commands may be abbreviated. Commands are:\n\n"); 2687 for (c = cmdtab; c->name; c++) 2688 if (c->help) { 2689 printf("%-*s\t%s\n", (int)HELPINDENT, c->name, 2690 c->help); 2691 } 2692 return 0; 2693 } 2694 else while (--argc > 0) { 2695 char *arg; 2696 arg = *++argv; 2697 c = getcmd(arg); 2698 if (Ambiguous((void *)c)) 2699 printf("?Ambiguous help command %s\n", arg); 2700 else if (c == (Command *)0) 2701 printf("?Invalid help command %s\n", arg); 2702 else if (c->help) 2703 printf("%s\n", c->help); 2704 } 2705 return 0; 2706 } 2707 2708 static char *rcname = 0; 2709 static char rcbuf[128]; 2710 2711 void 2712 cmdrc(char *m1, char *m2) 2713 { 2714 Command *c; 2715 FILE *rcfile; 2716 int gotmachine = 0; 2717 int l1 = strlen(m1); 2718 int l2 = strlen(m2); 2719 char m1save[MAXHOSTNAMELEN]; 2720 2721 if (skiprc) 2722 return; 2723 2724 strlcpy(m1save, m1, sizeof(m1save)); 2725 m1 = m1save; 2726 2727 if (rcname == 0) { 2728 rcname = getenv("HOME"); 2729 if (rcname && (strlen(rcname) + 10) < sizeof(rcbuf)) 2730 strcpy(rcbuf, rcname); 2731 else 2732 rcbuf[0] = '\0'; 2733 strcat(rcbuf, "/.telnetrc"); 2734 rcname = rcbuf; 2735 } 2736 2737 if ((rcfile = fopen(rcname, "r")) == 0) { 2738 return; 2739 } 2740 2741 for (;;) { 2742 if (fgets(line, sizeof(line), rcfile) == NULL) 2743 break; 2744 if (line[0] == 0) 2745 break; 2746 if (line[0] == '#') 2747 continue; 2748 if (gotmachine) { 2749 if (!isspace(line[0])) 2750 gotmachine = 0; 2751 } 2752 if (gotmachine == 0) { 2753 if (isspace(line[0])) 2754 continue; 2755 if (strncasecmp(line, m1, l1) == 0) 2756 strncpy(line, &line[l1], sizeof(line) - l1); 2757 else if (strncasecmp(line, m2, l2) == 0) 2758 strncpy(line, &line[l2], sizeof(line) - l2); 2759 else if (strncasecmp(line, "DEFAULT", 7) == 0) 2760 strncpy(line, &line[7], sizeof(line) - 7); 2761 else 2762 continue; 2763 if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n') 2764 continue; 2765 gotmachine = 1; 2766 } 2767 makeargv(); 2768 if (margv[0] == 0) 2769 continue; 2770 c = getcmd(margv[0]); 2771 if (Ambiguous((void *)c)) { 2772 printf("?Ambiguous command: %s\n", margv[0]); 2773 continue; 2774 } 2775 if (c == 0) { 2776 printf("?Invalid command: %s\n", margv[0]); 2777 continue; 2778 } 2779 /* 2780 * This should never happen... 2781 */ 2782 if (c->needconnect && !connected) { 2783 printf("?Need to be connected first for %s.\n", margv[0]); 2784 continue; 2785 } 2786 (*c->handler)(margc, margv); 2787 } 2788 fclose(rcfile); 2789 } 2790 2791 /* 2792 * Source route is handed in as 2793 * [!]@hop1@hop2...[@|:]dst 2794 * If the leading ! is present, it is a 2795 * strict source route, otherwise it is 2796 * assmed to be a loose source route. 2797 * 2798 * We fill in the source route option as 2799 * hop1,hop2,hop3...dest 2800 * and return a pointer to hop1, which will 2801 * be the address to connect() to. 2802 * 2803 * Arguments: 2804 * 2805 * res: ponter to addrinfo structure which contains sockaddr to 2806 * the host to connect to. 2807 * 2808 * arg: pointer to route list to decipher 2809 * 2810 * cpp: If *cpp is not equal to NULL, this is a 2811 * pointer to a pointer to a character array 2812 * that should be filled in with the option. 2813 * 2814 * lenp: pointer to an integer that contains the 2815 * length of *cpp if *cpp != NULL. 2816 * 2817 * protop: pointer to an integer that should be filled in with 2818 * appropriate protocol for setsockopt, as socket 2819 * protocol family. 2820 * 2821 * optp: pointer to an integer that should be filled in with 2822 * appropriate option for setsockopt, as socket protocol 2823 * family. 2824 * 2825 * Return values: 2826 * 2827 * If the return value is 1, then all operations are 2828 * successful. If the 2829 * return value is -1, there was a syntax error in the 2830 * option, either unknown characters, or too many hosts. 2831 * If the return value is 0, one of the hostnames in the 2832 * path is unknown, and *cpp is set to point to the bad 2833 * hostname. 2834 * 2835 * *cpp: If *cpp was equal to NULL, it will be filled 2836 * in with a pointer to our static area that has 2837 * the option filled in. This will be 32bit aligned. 2838 * 2839 * *lenp: This will be filled in with how long the option 2840 * pointed to by *cpp is. 2841 * 2842 * *protop: This will be filled in with appropriate protocol for 2843 * setsockopt, as socket protocol family. 2844 * 2845 * *optp: This will be filled in with appropriate option for 2846 * setsockopt, as socket protocol family. 2847 */ 2848 static int 2849 sourceroute(struct addrinfo *ai, char *arg, unsigned char **cpp, int *lenp, int *protop, int *optp) 2850 { 2851 static char buf[1024 + ALIGNBYTES]; /*XXX*/ 2852 unsigned char *cp, *cp2, *lsrp, *ep; 2853 struct sockaddr_in *_sin; 2854 #ifdef INET6 2855 struct sockaddr_in6 *sin6; 2856 struct ip6_rthdr *rth; 2857 #endif 2858 struct addrinfo hints, *res; 2859 int error; 2860 char c; 2861 2862 /* 2863 * Verify the arguments, and make sure we have 2864 * at least 7 bytes for the option. 2865 */ 2866 if (cpp == NULL || lenp == NULL) 2867 return -1; 2868 if (*cpp != NULL) { 2869 switch (res->ai_family) { 2870 case AF_INET: 2871 if (*lenp < 7) 2872 return -1; 2873 break; 2874 #ifdef INET6 2875 case AF_INET6: 2876 if (*lenp < (int)CMSG_SPACE(sizeof(struct ip6_rthdr) + 2877 sizeof(struct in6_addr))) 2878 return -1; 2879 break; 2880 #endif 2881 } 2882 } 2883 /* 2884 * Decide whether we have a buffer passed to us, 2885 * or if we need to use our own static buffer. 2886 */ 2887 if (*cpp) { 2888 lsrp = *cpp; 2889 ep = lsrp + *lenp; 2890 } else { 2891 *cpp = lsrp = (char *)ALIGN(buf); 2892 ep = lsrp + 1024; 2893 } 2894 2895 cp = arg; 2896 2897 #ifdef INET6 2898 if (ai->ai_family == AF_INET6) { 2899 if ((rth = inet6_rth_init((void *)*cpp, sizeof(buf), 2900 IPV6_RTHDR_TYPE_0, 0)) == NULL) 2901 return -1; 2902 if (*cp != '@') 2903 return -1; 2904 *protop = IPPROTO_IPV6; 2905 *optp = IPV6_RTHDR; 2906 } else 2907 #endif 2908 { 2909 /* 2910 * Next, decide whether we have a loose source 2911 * route or a strict source route, and fill in 2912 * the begining of the option. 2913 */ 2914 if (*cp == '!') { 2915 cp++; 2916 *lsrp++ = IPOPT_SSRR; 2917 } else 2918 *lsrp++ = IPOPT_LSRR; 2919 2920 if (*cp != '@') 2921 return -1; 2922 2923 lsrp++; /* skip over length, we'll fill it in later */ 2924 *lsrp++ = 4; 2925 *protop = IPPROTO_IP; 2926 *optp = IP_OPTIONS; 2927 } 2928 2929 cp++; 2930 memset(&hints, 0, sizeof(hints)); 2931 hints.ai_family = ai->ai_family; 2932 hints.ai_socktype = SOCK_STREAM; 2933 for (c = 0;;) { 2934 if ( 2935 #ifdef INET6 2936 ai->ai_family != AF_INET6 && 2937 #endif 2938 c == ':') 2939 cp2 = 0; 2940 else for (cp2 = cp; (c = *cp2); cp2++) { 2941 if (c == ',') { 2942 *cp2++ = '\0'; 2943 if (*cp2 == '@') 2944 cp2++; 2945 } else if (c == '@') { 2946 *cp2++ = '\0'; 2947 } else if ( 2948 #ifdef INET6 2949 ai->ai_family != AF_INET6 && 2950 #endif 2951 c == ':') { 2952 *cp2++ = '\0'; 2953 } else 2954 continue; 2955 break; 2956 } 2957 if (!c) 2958 cp2 = 0; 2959 2960 hints.ai_flags = AI_NUMERICHOST; 2961 error = getaddrinfo(cp, NULL, &hints, &res); 2962 if (error == EAI_NONAME) { 2963 hints.ai_flags = 0; 2964 error = getaddrinfo(cp, NULL, &hints, &res); 2965 } 2966 if (error != 0) { 2967 fprintf(stderr, "%s: %s\n", cp, gai_strerror(error)); 2968 if (error == EAI_SYSTEM) 2969 fprintf(stderr, "%s: %s\n", cp, 2970 strerror(errno)); 2971 *cpp = cp; 2972 return(0); 2973 } 2974 #ifdef INET6 2975 if (res->ai_family == AF_INET6) { 2976 sin6 = (struct sockaddr_in6 *)res->ai_addr; 2977 if (inet6_rth_add((void *)rth, &sin6->sin6_addr) == -1) 2978 return(0); 2979 } else 2980 #endif 2981 { 2982 _sin = (struct sockaddr_in *)res->ai_addr; 2983 memcpy(lsrp, (char *)&_sin->sin_addr, 4); 2984 lsrp += 4; 2985 } 2986 if (cp2) 2987 cp = cp2; 2988 else 2989 break; 2990 /* 2991 * Check to make sure there is space for next address 2992 */ 2993 if (lsrp + 4 > ep) 2994 return -1; 2995 freeaddrinfo(res); 2996 } 2997 #ifdef INET6 2998 if (res->ai_family == AF_INET6) { 2999 rth->ip6r_len = rth->ip6r_segleft * 2; 3000 *lenp = (rth->ip6r_len + 1) << 3; 3001 } else 3002 #endif 3003 { 3004 if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) { 3005 *cpp = 0; 3006 *lenp = 0; 3007 return -1; 3008 } 3009 *lsrp++ = IPOPT_NOP; /* 32 bit word align it */ 3010 *lenp = lsrp - *cpp; 3011 } 3012 freeaddrinfo(res); 3013 return 1; 3014 } 3015