1 /* 2 * Copyright (c) 1988, 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)commands.c 8.2 (Berkeley) 12/15/93"; 10 #endif /* not lint */ 11 12 #if defined(unix) 13 #include <sys/param.h> 14 #if defined(CRAY) || defined(sysV88) 15 #include <sys/types.h> 16 #endif 17 #include <sys/file.h> 18 #else 19 #include <sys/types.h> 20 #endif /* defined(unix) */ 21 #include <sys/socket.h> 22 #include <netinet/in.h> 23 #ifdef CRAY 24 #include <fcntl.h> 25 #endif /* CRAY */ 26 27 #include <signal.h> 28 #include <netdb.h> 29 #include <ctype.h> 30 #include <pwd.h> 31 #include <varargs.h> 32 #include <errno.h> 33 34 #include <arpa/telnet.h> 35 36 #include "general.h" 37 38 #include "ring.h" 39 40 #include "externs.h" 41 #include "defines.h" 42 #include "types.h" 43 44 #if !defined(CRAY) && !defined(sysV88) 45 #include <netinet/in_systm.h> 46 # if (defined(vax) || defined(tahoe) || defined(hp300)) && !defined(ultrix) 47 # include <machine/endian.h> 48 # endif /* vax */ 49 #endif /* !defined(CRAY) && !defined(sysV88) */ 50 #include <netinet/ip.h> 51 52 53 #ifndef MAXHOSTNAMELEN 54 #define MAXHOSTNAMELEN 64 55 #endif MAXHOSTNAMELEN 56 57 #if defined(IPPROTO_IP) && defined(IP_TOS) 58 int tos = -1; 59 #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 60 61 char *hostname; 62 static char _hostname[MAXHOSTNAMELEN]; 63 64 extern char *getenv(); 65 66 extern int isprefix(); 67 extern char **genget(); 68 extern int Ambiguous(); 69 70 static call(); 71 72 typedef struct { 73 char *name; /* command name */ 74 char *help; /* help string (NULL for no help) */ 75 int (*handler)(); /* routine which executes command */ 76 int needconnect; /* Do we need to be connected to execute? */ 77 } Command; 78 79 static char line[256]; 80 static char saveline[256]; 81 static int margc; 82 static char *margv[20]; 83 84 static void 85 makeargv() 86 { 87 register char *cp, *cp2, c; 88 register char **argp = margv; 89 90 margc = 0; 91 cp = line; 92 if (*cp == '!') { /* Special case shell escape */ 93 strcpy(saveline, line); /* save for shell command */ 94 *argp++ = "!"; /* No room in string to get this */ 95 margc++; 96 cp++; 97 } 98 while (c = *cp) { 99 register int inquote = 0; 100 while (isspace(c)) 101 c = *++cp; 102 if (c == '\0') 103 break; 104 *argp++ = cp; 105 margc += 1; 106 for (cp2 = cp; c != '\0'; c = *++cp) { 107 if (inquote) { 108 if (c == inquote) { 109 inquote = 0; 110 continue; 111 } 112 } else { 113 if (c == '\\') { 114 if ((c = *++cp) == '\0') 115 break; 116 } else if (c == '"') { 117 inquote = '"'; 118 continue; 119 } else if (c == '\'') { 120 inquote = '\''; 121 continue; 122 } else if (isspace(c)) 123 break; 124 } 125 *cp2++ = c; 126 } 127 *cp2 = '\0'; 128 if (c == '\0') 129 break; 130 cp++; 131 } 132 *argp++ = 0; 133 } 134 135 /* 136 * Make a character string into a number. 137 * 138 * Todo: 1. Could take random integers (12, 0x12, 012, 0b1). 139 */ 140 141 static 142 special(s) 143 register char *s; 144 { 145 register char c; 146 char b; 147 148 switch (*s) { 149 case '^': 150 b = *++s; 151 if (b == '?') { 152 c = b | 0x40; /* DEL */ 153 } else { 154 c = b & 0x1f; 155 } 156 break; 157 default: 158 c = *s; 159 break; 160 } 161 return c; 162 } 163 164 /* 165 * Construct a control character sequence 166 * for a special character. 167 */ 168 static char * 169 control(c) 170 register cc_t c; 171 { 172 static char buf[5]; 173 /* 174 * The only way I could get the Sun 3.5 compiler 175 * to shut up about 176 * if ((unsigned int)c >= 0x80) 177 * was to assign "c" to an unsigned int variable... 178 * Arggg.... 179 */ 180 register unsigned int uic = (unsigned int)c; 181 182 if (uic == 0x7f) 183 return ("^?"); 184 if (c == (cc_t)_POSIX_VDISABLE) { 185 return "off"; 186 } 187 if (uic >= 0x80) { 188 buf[0] = '\\'; 189 buf[1] = ((c>>6)&07) + '0'; 190 buf[2] = ((c>>3)&07) + '0'; 191 buf[3] = (c&07) + '0'; 192 buf[4] = 0; 193 } else if (uic >= 0x20) { 194 buf[0] = c; 195 buf[1] = 0; 196 } else { 197 buf[0] = '^'; 198 buf[1] = '@'+c; 199 buf[2] = 0; 200 } 201 return (buf); 202 } 203 204 205 206 /* 207 * The following are data structures and routines for 208 * the "send" command. 209 * 210 */ 211 212 struct sendlist { 213 char *name; /* How user refers to it (case independent) */ 214 char *help; /* Help information (0 ==> no help) */ 215 int needconnect; /* Need to be connected */ 216 int narg; /* Number of arguments */ 217 int (*handler)(); /* Routine to perform (for special ops) */ 218 int nbyte; /* Number of bytes to send this command */ 219 int what; /* Character to be sent (<0 ==> special) */ 220 }; 221 222 223 static int 224 send_esc P((void)), 225 send_help P((void)), 226 send_docmd P((char *)), 227 send_dontcmd P((char *)), 228 send_willcmd P((char *)), 229 send_wontcmd P((char *)); 230 231 static struct sendlist Sendlist[] = { 232 { "ao", "Send Telnet Abort output", 1, 0, 0, 2, AO }, 233 { "ayt", "Send Telnet 'Are You There'", 1, 0, 0, 2, AYT }, 234 { "brk", "Send Telnet Break", 1, 0, 0, 2, BREAK }, 235 { "break", 0, 1, 0, 0, 2, BREAK }, 236 { "ec", "Send Telnet Erase Character", 1, 0, 0, 2, EC }, 237 { "el", "Send Telnet Erase Line", 1, 0, 0, 2, EL }, 238 { "escape", "Send current escape character", 1, 0, send_esc, 1, 0 }, 239 { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, 0, 2, GA }, 240 { "ip", "Send Telnet Interrupt Process", 1, 0, 0, 2, IP }, 241 { "intp", 0, 1, 0, 0, 2, IP }, 242 { "interrupt", 0, 1, 0, 0, 2, IP }, 243 { "intr", 0, 1, 0, 0, 2, IP }, 244 { "nop", "Send Telnet 'No operation'", 1, 0, 0, 2, NOP }, 245 { "eor", "Send Telnet 'End of Record'", 1, 0, 0, 2, EOR }, 246 { "abort", "Send Telnet 'Abort Process'", 1, 0, 0, 2, ABORT }, 247 { "susp", "Send Telnet 'Suspend Process'", 1, 0, 0, 2, SUSP }, 248 { "eof", "Send Telnet End of File Character", 1, 0, 0, 2, xEOF }, 249 { "synch", "Perform Telnet 'Synch operation'", 1, 0, dosynch, 2, 0 }, 250 { "getstatus", "Send request for STATUS", 1, 0, get_status, 6, 0 }, 251 { "?", "Display send options", 0, 0, send_help, 0, 0 }, 252 { "help", 0, 0, 0, send_help, 0, 0 }, 253 { "do", 0, 0, 1, send_docmd, 3, 0 }, 254 { "dont", 0, 0, 1, send_dontcmd, 3, 0 }, 255 { "will", 0, 0, 1, send_willcmd, 3, 0 }, 256 { "wont", 0, 0, 1, send_wontcmd, 3, 0 }, 257 { 0 } 258 }; 259 260 #define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \ 261 sizeof(struct sendlist))) 262 263 static int 264 sendcmd(argc, argv) 265 int argc; 266 char **argv; 267 { 268 int count; /* how many bytes we are going to need to send */ 269 int i; 270 int question = 0; /* was at least one argument a question */ 271 struct sendlist *s; /* pointer to current command */ 272 int success = 0; 273 int needconnect = 0; 274 275 if (argc < 2) { 276 printf("need at least one argument for 'send' command\n"); 277 printf("'send ?' for help\n"); 278 return 0; 279 } 280 /* 281 * First, validate all the send arguments. 282 * In addition, we see how much space we are going to need, and 283 * whether or not we will be doing a "SYNCH" operation (which 284 * flushes the network queue). 285 */ 286 count = 0; 287 for (i = 1; i < argc; i++) { 288 s = GETSEND(argv[i]); 289 if (s == 0) { 290 printf("Unknown send argument '%s'\n'send ?' for help.\n", 291 argv[i]); 292 return 0; 293 } else if (Ambiguous(s)) { 294 printf("Ambiguous send argument '%s'\n'send ?' for help.\n", 295 argv[i]); 296 return 0; 297 } 298 if (i + s->narg >= argc) { 299 fprintf(stderr, 300 "Need %d argument%s to 'send %s' command. 'send %s ?' for help.\n", 301 s->narg, s->narg == 1 ? "" : "s", s->name, s->name); 302 return 0; 303 } 304 count += s->nbyte; 305 if (s->handler == send_help) { 306 send_help(); 307 return 0; 308 } 309 310 i += s->narg; 311 needconnect += s->needconnect; 312 } 313 if (!connected && needconnect) { 314 printf("?Need to be connected first.\n"); 315 printf("'send ?' for help\n"); 316 return 0; 317 } 318 /* Now, do we have enough room? */ 319 if (NETROOM() < count) { 320 printf("There is not enough room in the buffer TO the network\n"); 321 printf("to process your request. Nothing will be done.\n"); 322 printf("('send synch' will throw away most data in the network\n"); 323 printf("buffer, if this might help.)\n"); 324 return 0; 325 } 326 /* OK, they are all OK, now go through again and actually send */ 327 count = 0; 328 for (i = 1; i < argc; i++) { 329 if ((s = GETSEND(argv[i])) == 0) { 330 fprintf(stderr, "Telnet 'send' error - argument disappeared!\n"); 331 (void) quit(); 332 /*NOTREACHED*/ 333 } 334 if (s->handler) { 335 count++; 336 success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0, 337 (s->narg > 1) ? argv[i+2] : 0); 338 i += s->narg; 339 } else { 340 NET2ADD(IAC, s->what); 341 printoption("SENT", IAC, s->what); 342 } 343 } 344 return (count == success); 345 } 346 347 static int 348 send_esc() 349 { 350 NETADD(escape); 351 return 1; 352 } 353 354 static int 355 send_docmd(name) 356 char *name; 357 { 358 return(send_tncmd(send_do, "do", name)); 359 } 360 361 static int 362 send_dontcmd(name) 363 char *name; 364 { 365 return(send_tncmd(send_dont, "dont", name)); 366 } 367 static int 368 send_willcmd(name) 369 char *name; 370 { 371 return(send_tncmd(send_will, "will", name)); 372 } 373 static int 374 send_wontcmd(name) 375 char *name; 376 { 377 return(send_tncmd(send_wont, "wont", name)); 378 } 379 380 int 381 send_tncmd(func, cmd, name) 382 void (*func)(); 383 char *cmd, *name; 384 { 385 char **cpp; 386 extern char *telopts[]; 387 register int val = 0; 388 389 if (isprefix(name, "help") || isprefix(name, "?")) { 390 register int col, len; 391 392 printf("Usage: send %s <value|option>\n", cmd); 393 printf("\"value\" must be from 0 to 255\n"); 394 printf("Valid options are:\n\t"); 395 396 col = 8; 397 for (cpp = telopts; *cpp; cpp++) { 398 len = strlen(*cpp) + 3; 399 if (col + len > 65) { 400 printf("\n\t"); 401 col = 8; 402 } 403 printf(" \"%s\"", *cpp); 404 col += len; 405 } 406 printf("\n"); 407 return 0; 408 } 409 cpp = (char **)genget(name, telopts, sizeof(char *)); 410 if (Ambiguous(cpp)) { 411 fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).\n", 412 name, cmd); 413 return 0; 414 } 415 if (cpp) { 416 val = cpp - telopts; 417 } else { 418 register char *cp = name; 419 420 while (*cp >= '0' && *cp <= '9') { 421 val *= 10; 422 val += *cp - '0'; 423 cp++; 424 } 425 if (*cp != 0) { 426 fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).\n", 427 name, cmd); 428 return 0; 429 } else if (val < 0 || val > 255) { 430 fprintf(stderr, "'%s': bad value ('send %s ?' for help).\n", 431 name, cmd); 432 return 0; 433 } 434 } 435 if (!connected) { 436 printf("?Need to be connected first.\n"); 437 return 0; 438 } 439 (*func)(val, 1); 440 return 1; 441 } 442 443 static int 444 send_help() 445 { 446 struct sendlist *s; /* pointer to current command */ 447 for (s = Sendlist; s->name; s++) { 448 if (s->help) 449 printf("%-15s %s\n", s->name, s->help); 450 } 451 return(0); 452 } 453 454 /* 455 * The following are the routines and data structures referred 456 * to by the arguments to the "toggle" command. 457 */ 458 459 static int 460 lclchars() 461 { 462 donelclchars = 1; 463 return 1; 464 } 465 466 static int 467 togdebug() 468 { 469 #ifndef NOT43 470 if (net > 0 && 471 (SetSockOpt(net, SOL_SOCKET, SO_DEBUG, debug)) < 0) { 472 perror("setsockopt (SO_DEBUG)"); 473 } 474 #else /* NOT43 */ 475 if (debug) { 476 if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 0, 0) < 0) 477 perror("setsockopt (SO_DEBUG)"); 478 } else 479 printf("Cannot turn off socket debugging\n"); 480 #endif /* NOT43 */ 481 return 1; 482 } 483 484 485 static int 486 togcrlf() 487 { 488 if (crlf) { 489 printf("Will send carriage returns as telnet <CR><LF>.\n"); 490 } else { 491 printf("Will send carriage returns as telnet <CR><NUL>.\n"); 492 } 493 return 1; 494 } 495 496 int binmode; 497 498 static int 499 togbinary(val) 500 int val; 501 { 502 donebinarytoggle = 1; 503 504 if (val >= 0) { 505 binmode = val; 506 } else { 507 if (my_want_state_is_will(TELOPT_BINARY) && 508 my_want_state_is_do(TELOPT_BINARY)) { 509 binmode = 1; 510 } else if (my_want_state_is_wont(TELOPT_BINARY) && 511 my_want_state_is_dont(TELOPT_BINARY)) { 512 binmode = 0; 513 } 514 val = binmode ? 0 : 1; 515 } 516 517 if (val == 1) { 518 if (my_want_state_is_will(TELOPT_BINARY) && 519 my_want_state_is_do(TELOPT_BINARY)) { 520 printf("Already operating in binary mode with remote host.\n"); 521 } else { 522 printf("Negotiating binary mode with remote host.\n"); 523 tel_enter_binary(3); 524 } 525 } else { 526 if (my_want_state_is_wont(TELOPT_BINARY) && 527 my_want_state_is_dont(TELOPT_BINARY)) { 528 printf("Already in network ascii mode with remote host.\n"); 529 } else { 530 printf("Negotiating network ascii mode with remote host.\n"); 531 tel_leave_binary(3); 532 } 533 } 534 return 1; 535 } 536 537 static int 538 togrbinary(val) 539 int val; 540 { 541 donebinarytoggle = 1; 542 543 if (val == -1) 544 val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1; 545 546 if (val == 1) { 547 if (my_want_state_is_do(TELOPT_BINARY)) { 548 printf("Already receiving in binary mode.\n"); 549 } else { 550 printf("Negotiating binary mode on input.\n"); 551 tel_enter_binary(1); 552 } 553 } else { 554 if (my_want_state_is_dont(TELOPT_BINARY)) { 555 printf("Already receiving in network ascii mode.\n"); 556 } else { 557 printf("Negotiating network ascii mode on input.\n"); 558 tel_leave_binary(1); 559 } 560 } 561 return 1; 562 } 563 564 static int 565 togxbinary(val) 566 int val; 567 { 568 donebinarytoggle = 1; 569 570 if (val == -1) 571 val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1; 572 573 if (val == 1) { 574 if (my_want_state_is_will(TELOPT_BINARY)) { 575 printf("Already transmitting in binary mode.\n"); 576 } else { 577 printf("Negotiating binary mode on output.\n"); 578 tel_enter_binary(2); 579 } 580 } else { 581 if (my_want_state_is_wont(TELOPT_BINARY)) { 582 printf("Already transmitting in network ascii mode.\n"); 583 } else { 584 printf("Negotiating network ascii mode on output.\n"); 585 tel_leave_binary(2); 586 } 587 } 588 return 1; 589 } 590 591 592 static int togglehelp P((void)); 593 #if defined(AUTHENTICATION) 594 extern int auth_togdebug P((int)); 595 #endif 596 #ifdef ENCRYPTION 597 extern int EncryptAutoEnc P((int)); 598 extern int EncryptAutoDec P((int)); 599 extern int EncryptDebug P((int)); 600 extern int EncryptVerbose P((int)); 601 #endif /* ENCRYPTION */ 602 603 struct togglelist { 604 char *name; /* name of toggle */ 605 char *help; /* help message */ 606 int (*handler)(); /* routine to do actual setting */ 607 int *variable; 608 char *actionexplanation; 609 }; 610 611 static struct togglelist Togglelist[] = { 612 { "autoflush", 613 "flushing of output when sending interrupt characters", 614 0, 615 &autoflush, 616 "flush output when sending interrupt characters" }, 617 { "autosynch", 618 "automatic sending of interrupt characters in urgent mode", 619 0, 620 &autosynch, 621 "send interrupt characters in urgent mode" }, 622 #if defined(AUTHENTICATION) 623 { "autologin", 624 "automatic sending of login and/or authentication info", 625 0, 626 &autologin, 627 "send login name and/or authentication information" }, 628 { "authdebug", 629 "Toggle authentication debugging", 630 auth_togdebug, 631 0, 632 "print authentication debugging information" }, 633 #endif 634 #ifdef ENCRYPTION 635 { "autoencrypt", 636 "automatic encryption of data stream", 637 EncryptAutoEnc, 638 0, 639 "automatically encrypt output" }, 640 { "autodecrypt", 641 "automatic decryption of data stream", 642 EncryptAutoDec, 643 0, 644 "automatically decrypt input" }, 645 { "verbose_encrypt", 646 "Toggle verbose encryption output", 647 EncryptVerbose, 648 0, 649 "print verbose encryption output" }, 650 { "encdebug", 651 "Toggle encryption debugging", 652 EncryptDebug, 653 0, 654 "print encryption debugging information" }, 655 #endif /* ENCRYPTION */ 656 { "skiprc", 657 "don't read ~/.telnetrc file", 658 0, 659 &skiprc, 660 "skip reading of ~/.telnetrc file" }, 661 { "binary", 662 "sending and receiving of binary data", 663 togbinary, 664 0, 665 0 }, 666 { "inbinary", 667 "receiving of binary data", 668 togrbinary, 669 0, 670 0 }, 671 { "outbinary", 672 "sending of binary data", 673 togxbinary, 674 0, 675 0 }, 676 { "crlf", 677 "sending carriage returns as telnet <CR><LF>", 678 togcrlf, 679 &crlf, 680 0 }, 681 { "crmod", 682 "mapping of received carriage returns", 683 0, 684 &crmod, 685 "map carriage return on output" }, 686 { "localchars", 687 "local recognition of certain control characters", 688 lclchars, 689 &localchars, 690 "recognize certain control characters" }, 691 { " ", "", 0 }, /* empty line */ 692 #if defined(unix) && defined(TN3270) 693 { "apitrace", 694 "(debugging) toggle tracing of API transactions", 695 0, 696 &apitrace, 697 "trace API transactions" }, 698 { "cursesdata", 699 "(debugging) toggle printing of hexadecimal curses data", 700 0, 701 &cursesdata, 702 "print hexadecimal representation of curses data" }, 703 #endif /* defined(unix) && defined(TN3270) */ 704 { "debug", 705 "debugging", 706 togdebug, 707 &debug, 708 "turn on socket level debugging" }, 709 { "netdata", 710 "printing of hexadecimal network data (debugging)", 711 0, 712 &netdata, 713 "print hexadecimal representation of network traffic" }, 714 { "prettydump", 715 "output of \"netdata\" to user readable format (debugging)", 716 0, 717 &prettydump, 718 "print user readable output for \"netdata\"" }, 719 { "options", 720 "viewing of options processing (debugging)", 721 0, 722 &showoptions, 723 "show option processing" }, 724 #if defined(unix) 725 { "termdata", 726 "(debugging) toggle printing of hexadecimal terminal data", 727 0, 728 &termdata, 729 "print hexadecimal representation of terminal traffic" }, 730 #endif /* defined(unix) */ 731 { "?", 732 0, 733 togglehelp }, 734 { "help", 735 0, 736 togglehelp }, 737 { 0 } 738 }; 739 740 static int 741 togglehelp() 742 { 743 struct togglelist *c; 744 745 for (c = Togglelist; c->name; c++) { 746 if (c->help) { 747 if (*c->help) 748 printf("%-15s toggle %s\n", c->name, c->help); 749 else 750 printf("\n"); 751 } 752 } 753 printf("\n"); 754 printf("%-15s %s\n", "?", "display help information"); 755 return 0; 756 } 757 758 static void 759 settogglehelp(set) 760 int set; 761 { 762 struct togglelist *c; 763 764 for (c = Togglelist; c->name; c++) { 765 if (c->help) { 766 if (*c->help) 767 printf("%-15s %s %s\n", c->name, set ? "enable" : "disable", 768 c->help); 769 else 770 printf("\n"); 771 } 772 } 773 } 774 775 #define GETTOGGLE(name) (struct togglelist *) \ 776 genget(name, (char **) Togglelist, sizeof(struct togglelist)) 777 778 static int 779 toggle(argc, argv) 780 int argc; 781 char *argv[]; 782 { 783 int retval = 1; 784 char *name; 785 struct togglelist *c; 786 787 if (argc < 2) { 788 fprintf(stderr, 789 "Need an argument to 'toggle' command. 'toggle ?' for help.\n"); 790 return 0; 791 } 792 argc--; 793 argv++; 794 while (argc--) { 795 name = *argv++; 796 c = GETTOGGLE(name); 797 if (Ambiguous(c)) { 798 fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\n", 799 name); 800 return 0; 801 } else if (c == 0) { 802 fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\n", 803 name); 804 return 0; 805 } else { 806 if (c->variable) { 807 *c->variable = !*c->variable; /* invert it */ 808 if (c->actionexplanation) { 809 printf("%s %s.\n", *c->variable? "Will" : "Won't", 810 c->actionexplanation); 811 } 812 } 813 if (c->handler) { 814 retval &= (*c->handler)(-1); 815 } 816 } 817 } 818 return retval; 819 } 820 821 /* 822 * The following perform the "set" command. 823 */ 824 825 #ifdef USE_TERMIO 826 struct termio new_tc = { 0 }; 827 #endif 828 829 struct setlist { 830 char *name; /* name */ 831 char *help; /* help information */ 832 void (*handler)(); 833 cc_t *charp; /* where it is located at */ 834 }; 835 836 static struct setlist Setlist[] = { 837 #ifdef KLUDGELINEMODE 838 { "echo", "character to toggle local echoing on/off", 0, &echoc }, 839 #endif 840 { "escape", "character to escape back to telnet command mode", 0, &escape }, 841 { "rlogin", "rlogin escape character", 0, &rlogin }, 842 { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile}, 843 { " ", "" }, 844 { " ", "The following need 'localchars' to be toggled true", 0, 0 }, 845 { "flushoutput", "character to cause an Abort Output", 0, termFlushCharp }, 846 { "interrupt", "character to cause an Interrupt Process", 0, termIntCharp }, 847 { "quit", "character to cause an Abort process", 0, termQuitCharp }, 848 { "eof", "character to cause an EOF ", 0, termEofCharp }, 849 { " ", "" }, 850 { " ", "The following are for local editing in linemode", 0, 0 }, 851 { "erase", "character to use to erase a character", 0, termEraseCharp }, 852 { "kill", "character to use to erase a line", 0, termKillCharp }, 853 { "lnext", "character to use for literal next", 0, termLiteralNextCharp }, 854 { "susp", "character to cause a Suspend Process", 0, termSuspCharp }, 855 { "reprint", "character to use for line reprint", 0, termRprntCharp }, 856 { "worderase", "character to use to erase a word", 0, termWerasCharp }, 857 { "start", "character to use for XON", 0, termStartCharp }, 858 { "stop", "character to use for XOFF", 0, termStopCharp }, 859 { "forw1", "alternate end of line character", 0, termForw1Charp }, 860 { "forw2", "alternate end of line character", 0, termForw2Charp }, 861 { "ayt", "alternate AYT character", 0, termAytCharp }, 862 { 0 } 863 }; 864 865 #if defined(CRAY) && !defined(__STDC__) 866 /* Work around compiler bug in pcc 4.1.5 */ 867 void 868 _setlist_init() 869 { 870 #ifndef KLUDGELINEMODE 871 #define N 5 872 #else 873 #define N 6 874 #endif 875 Setlist[N+0].charp = &termFlushChar; 876 Setlist[N+1].charp = &termIntChar; 877 Setlist[N+2].charp = &termQuitChar; 878 Setlist[N+3].charp = &termEofChar; 879 Setlist[N+6].charp = &termEraseChar; 880 Setlist[N+7].charp = &termKillChar; 881 Setlist[N+8].charp = &termLiteralNextChar; 882 Setlist[N+9].charp = &termSuspChar; 883 Setlist[N+10].charp = &termRprntChar; 884 Setlist[N+11].charp = &termWerasChar; 885 Setlist[N+12].charp = &termStartChar; 886 Setlist[N+13].charp = &termStopChar; 887 Setlist[N+14].charp = &termForw1Char; 888 Setlist[N+15].charp = &termForw2Char; 889 Setlist[N+16].charp = &termAytChar; 890 #undef N 891 } 892 #endif /* defined(CRAY) && !defined(__STDC__) */ 893 894 static struct setlist * 895 getset(name) 896 char *name; 897 { 898 return (struct setlist *) 899 genget(name, (char **) Setlist, sizeof(struct setlist)); 900 } 901 902 void 903 set_escape_char(s) 904 char *s; 905 { 906 if (rlogin != _POSIX_VDISABLE) { 907 rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE; 908 printf("Telnet rlogin escape character is '%s'.\n", 909 control(rlogin)); 910 } else { 911 escape = (s && *s) ? special(s) : _POSIX_VDISABLE; 912 printf("Telnet escape character is '%s'.\n", control(escape)); 913 } 914 } 915 916 static int 917 setcmd(argc, argv) 918 int argc; 919 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) { 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(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(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(argc, argv) 991 int argc; 992 char *argv[]; 993 { 994 struct setlist *ct; 995 struct togglelist *c; 996 register char *name; 997 998 if (argc < 2) { 999 fprintf(stderr, 1000 "Need an argument to 'unset' command. 'unset ?' for help.\n"); 1001 return 0; 1002 } 1003 if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) { 1004 for (ct = Setlist; ct->name; ct++) 1005 printf("%-15s %s\n", ct->name, ct->help); 1006 printf("\n"); 1007 settogglehelp(0); 1008 printf("%-15s %s\n", "?", "display help information"); 1009 return 0; 1010 } 1011 1012 argc--; 1013 argv++; 1014 while (argc--) { 1015 name = *argv++; 1016 ct = getset(name); 1017 if (ct == 0) { 1018 c = GETTOGGLE(name); 1019 if (c == 0) { 1020 fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\n", 1021 name); 1022 return 0; 1023 } else if (Ambiguous(c)) { 1024 fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n", 1025 name); 1026 return 0; 1027 } 1028 if (c->variable) { 1029 *c->variable = 0; 1030 if (c->actionexplanation) { 1031 printf("%s %s.\n", *c->variable? "Will" : "Won't", 1032 c->actionexplanation); 1033 } 1034 } 1035 if (c->handler) 1036 (*c->handler)(0); 1037 } else if (Ambiguous(ct)) { 1038 fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n", 1039 name); 1040 return 0; 1041 } else if (ct->handler) { 1042 (*ct->handler)(0); 1043 printf("%s reset to \"%s\".\n", ct->name, (char *)ct->charp); 1044 } else { 1045 *(ct->charp) = _POSIX_VDISABLE; 1046 printf("%s character is '%s'.\n", ct->name, control(*(ct->charp))); 1047 } 1048 } 1049 return 1; 1050 } 1051 1052 /* 1053 * The following are the data structures and routines for the 1054 * 'mode' command. 1055 */ 1056 #ifdef KLUDGELINEMODE 1057 extern int kludgelinemode; 1058 1059 static int 1060 dokludgemode() 1061 { 1062 kludgelinemode = 1; 1063 send_wont(TELOPT_LINEMODE, 1); 1064 send_dont(TELOPT_SGA, 1); 1065 send_dont(TELOPT_ECHO, 1); 1066 } 1067 #endif 1068 1069 static int 1070 dolinemode() 1071 { 1072 #ifdef KLUDGELINEMODE 1073 if (kludgelinemode) 1074 send_dont(TELOPT_SGA, 1); 1075 #endif 1076 send_will(TELOPT_LINEMODE, 1); 1077 send_dont(TELOPT_ECHO, 1); 1078 return 1; 1079 } 1080 1081 static int 1082 docharmode() 1083 { 1084 #ifdef KLUDGELINEMODE 1085 if (kludgelinemode) 1086 send_do(TELOPT_SGA, 1); 1087 else 1088 #endif 1089 send_wont(TELOPT_LINEMODE, 1); 1090 send_do(TELOPT_ECHO, 1); 1091 return 1; 1092 } 1093 1094 static int 1095 dolmmode(bit, on) 1096 int bit, on; 1097 { 1098 unsigned char c; 1099 extern int linemode; 1100 1101 if (my_want_state_is_wont(TELOPT_LINEMODE)) { 1102 printf("?Need to have LINEMODE option enabled first.\n"); 1103 printf("'mode ?' for help.\n"); 1104 return 0; 1105 } 1106 1107 if (on) 1108 c = (linemode | bit); 1109 else 1110 c = (linemode & ~bit); 1111 lm_mode(&c, 1, 1); 1112 return 1; 1113 } 1114 1115 int 1116 setmode(bit) 1117 { 1118 return dolmmode(bit, 1); 1119 } 1120 1121 int 1122 clearmode(bit) 1123 { 1124 return dolmmode(bit, 0); 1125 } 1126 1127 struct modelist { 1128 char *name; /* command name */ 1129 char *help; /* help string */ 1130 int (*handler)(); /* routine which executes command */ 1131 int needconnect; /* Do we need to be connected to execute? */ 1132 int arg1; 1133 }; 1134 1135 extern int modehelp(); 1136 1137 static struct modelist ModeList[] = { 1138 { "character", "Disable LINEMODE option", docharmode, 1 }, 1139 #ifdef KLUDGELINEMODE 1140 { "", "(or disable obsolete line-by-line mode)", 0 }, 1141 #endif 1142 { "line", "Enable LINEMODE option", dolinemode, 1 }, 1143 #ifdef KLUDGELINEMODE 1144 { "", "(or enable obsolete line-by-line mode)", 0 }, 1145 #endif 1146 { "", "", 0 }, 1147 { "", "These require the LINEMODE option to be enabled", 0 }, 1148 { "isig", "Enable signal trapping", setmode, 1, MODE_TRAPSIG }, 1149 { "+isig", 0, setmode, 1, MODE_TRAPSIG }, 1150 { "-isig", "Disable signal trapping", clearmode, 1, MODE_TRAPSIG }, 1151 { "edit", "Enable character editing", setmode, 1, MODE_EDIT }, 1152 { "+edit", 0, setmode, 1, MODE_EDIT }, 1153 { "-edit", "Disable character editing", clearmode, 1, MODE_EDIT }, 1154 { "softtabs", "Enable tab expansion", setmode, 1, MODE_SOFT_TAB }, 1155 { "+softtabs", 0, setmode, 1, MODE_SOFT_TAB }, 1156 { "-softtabs", "Disable character editing", clearmode, 1, MODE_SOFT_TAB }, 1157 { "litecho", "Enable literal character echo", setmode, 1, MODE_LIT_ECHO }, 1158 { "+litecho", 0, setmode, 1, MODE_LIT_ECHO }, 1159 { "-litecho", "Disable literal character echo", clearmode, 1, MODE_LIT_ECHO }, 1160 { "help", 0, modehelp, 0 }, 1161 #ifdef KLUDGELINEMODE 1162 { "kludgeline", 0, dokludgemode, 1 }, 1163 #endif 1164 { "", "", 0 }, 1165 { "?", "Print help information", modehelp, 0 }, 1166 { 0 }, 1167 }; 1168 1169 1170 int 1171 modehelp() 1172 { 1173 struct modelist *mt; 1174 1175 printf("format is: 'mode Mode', where 'Mode' is one of:\n\n"); 1176 for (mt = ModeList; mt->name; mt++) { 1177 if (mt->help) { 1178 if (*mt->help) 1179 printf("%-15s %s\n", mt->name, mt->help); 1180 else 1181 printf("\n"); 1182 } 1183 } 1184 return 0; 1185 } 1186 1187 #define GETMODECMD(name) (struct modelist *) \ 1188 genget(name, (char **) ModeList, sizeof(struct modelist)) 1189 1190 static int 1191 modecmd(argc, argv) 1192 int argc; 1193 char *argv[]; 1194 { 1195 struct modelist *mt; 1196 1197 if (argc != 2) { 1198 printf("'mode' command requires an argument\n"); 1199 printf("'mode ?' for help.\n"); 1200 } else if ((mt = GETMODECMD(argv[1])) == 0) { 1201 fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\n", argv[1]); 1202 } else if (Ambiguous(mt)) { 1203 fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\n", argv[1]); 1204 } else if (mt->needconnect && !connected) { 1205 printf("?Need to be connected first.\n"); 1206 printf("'mode ?' for help.\n"); 1207 } else if (mt->handler) { 1208 return (*mt->handler)(mt->arg1); 1209 } 1210 return 0; 1211 } 1212 1213 /* 1214 * The following data structures and routines implement the 1215 * "display" command. 1216 */ 1217 1218 static int 1219 display(argc, argv) 1220 int argc; 1221 char *argv[]; 1222 { 1223 struct togglelist *tl; 1224 struct setlist *sl; 1225 1226 #define dotog(tl) if (tl->variable && tl->actionexplanation) { \ 1227 if (*tl->variable) { \ 1228 printf("will"); \ 1229 } else { \ 1230 printf("won't"); \ 1231 } \ 1232 printf(" %s.\n", tl->actionexplanation); \ 1233 } 1234 1235 #define doset(sl) if (sl->name && *sl->name != ' ') { \ 1236 if (sl->handler == 0) \ 1237 printf("%-15s [%s]\n", sl->name, control(*sl->charp)); \ 1238 else \ 1239 printf("%-15s \"%s\"\n", sl->name, (char *)sl->charp); \ 1240 } 1241 1242 if (argc == 1) { 1243 for (tl = Togglelist; tl->name; tl++) { 1244 dotog(tl); 1245 } 1246 printf("\n"); 1247 for (sl = Setlist; sl->name; sl++) { 1248 doset(sl); 1249 } 1250 } else { 1251 int i; 1252 1253 for (i = 1; i < argc; i++) { 1254 sl = getset(argv[i]); 1255 tl = GETTOGGLE(argv[i]); 1256 if (Ambiguous(sl) || Ambiguous(tl)) { 1257 printf("?Ambiguous argument '%s'.\n", argv[i]); 1258 return 0; 1259 } else if (!sl && !tl) { 1260 printf("?Unknown argument '%s'.\n", argv[i]); 1261 return 0; 1262 } else { 1263 if (tl) { 1264 dotog(tl); 1265 } 1266 if (sl) { 1267 doset(sl); 1268 } 1269 } 1270 } 1271 } 1272 /*@*/optionstatus(); 1273 #ifdef ENCRYPTION 1274 EncryptStatus(); 1275 #endif /* ENCRYPTION */ 1276 return 1; 1277 #undef doset 1278 #undef dotog 1279 } 1280 1281 /* 1282 * The following are the data structures, and many of the routines, 1283 * relating to command processing. 1284 */ 1285 1286 /* 1287 * Set the escape character. 1288 */ 1289 static int 1290 setescape(argc, argv) 1291 int argc; 1292 char *argv[]; 1293 { 1294 register char *arg; 1295 char buf[50]; 1296 1297 printf( 1298 "Deprecated usage - please use 'set escape%s%s' in the future.\n", 1299 (argc > 2)? " ":"", (argc > 2)? argv[1]: ""); 1300 if (argc > 2) 1301 arg = argv[1]; 1302 else { 1303 printf("new escape character: "); 1304 (void) fgets(buf, sizeof(buf), stdin); 1305 arg = buf; 1306 } 1307 if (arg[0] != '\0') 1308 escape = arg[0]; 1309 if (!In3270) { 1310 printf("Escape character is '%s'.\n", control(escape)); 1311 } 1312 (void) fflush(stdout); 1313 return 1; 1314 } 1315 1316 /*VARARGS*/ 1317 static int 1318 togcrmod() 1319 { 1320 crmod = !crmod; 1321 printf("Deprecated usage - please use 'toggle crmod' in the future.\n"); 1322 printf("%s map carriage return on output.\n", crmod ? "Will" : "Won't"); 1323 (void) fflush(stdout); 1324 return 1; 1325 } 1326 1327 /*VARARGS*/ 1328 int 1329 suspend() 1330 { 1331 #ifdef SIGTSTP 1332 setcommandmode(); 1333 { 1334 long oldrows, oldcols, newrows, newcols, err; 1335 1336 err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 1337 (void) kill(0, SIGTSTP); 1338 /* 1339 * If we didn't get the window size before the SUSPEND, but we 1340 * can get them now (???), then send the NAWS to make sure that 1341 * we are set up for the right window size. 1342 */ 1343 if (TerminalWindowSize(&newrows, &newcols) && connected && 1344 (err || ((oldrows != newrows) || (oldcols != newcols)))) { 1345 sendnaws(); 1346 } 1347 } 1348 /* reget parameters in case they were changed */ 1349 TerminalSaveState(); 1350 setconnmode(0); 1351 #else 1352 printf("Suspend is not supported. Try the '!' command instead\n"); 1353 #endif 1354 return 1; 1355 } 1356 1357 #if !defined(TN3270) 1358 /*ARGSUSED*/ 1359 int 1360 shell(argc, argv) 1361 int argc; 1362 char *argv[]; 1363 { 1364 long oldrows, oldcols, newrows, newcols, err; 1365 1366 setcommandmode(); 1367 1368 err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 1369 switch(vfork()) { 1370 case -1: 1371 perror("Fork failed\n"); 1372 break; 1373 1374 case 0: 1375 { 1376 /* 1377 * Fire up the shell in the child. 1378 */ 1379 register char *shellp, *shellname; 1380 extern char *rindex(); 1381 1382 shellp = getenv("SHELL"); 1383 if (shellp == NULL) 1384 shellp = "/bin/sh"; 1385 if ((shellname = rindex(shellp, '/')) == 0) 1386 shellname = shellp; 1387 else 1388 shellname++; 1389 if (argc > 1) 1390 execl(shellp, shellname, "-c", &saveline[1], 0); 1391 else 1392 execl(shellp, shellname, 0); 1393 perror("Execl"); 1394 _exit(1); 1395 } 1396 default: 1397 (void)wait((int *)0); /* Wait for the shell to complete */ 1398 1399 if (TerminalWindowSize(&newrows, &newcols) && connected && 1400 (err || ((oldrows != newrows) || (oldcols != newcols)))) { 1401 sendnaws(); 1402 } 1403 break; 1404 } 1405 return 1; 1406 } 1407 #else /* !defined(TN3270) */ 1408 extern int shell(); 1409 #endif /* !defined(TN3270) */ 1410 1411 /*VARARGS*/ 1412 static 1413 bye(argc, argv) 1414 int argc; /* Number of arguments */ 1415 char *argv[]; /* arguments */ 1416 { 1417 extern int resettermname; 1418 1419 if (connected) { 1420 (void) shutdown(net, 2); 1421 printf("Connection closed.\n"); 1422 (void) NetClose(net); 1423 connected = 0; 1424 resettermname = 1; 1425 #if defined(AUTHENTICATION) || defined(ENCRYPTION) 1426 auth_encrypt_connect(connected); 1427 #endif /* defined(AUTHENTICATION) || defined(ENCRYPTION) */ 1428 /* reset options */ 1429 tninit(); 1430 #if defined(TN3270) 1431 SetIn3270(); /* Get out of 3270 mode */ 1432 #endif /* defined(TN3270) */ 1433 } 1434 if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) { 1435 longjmp(toplevel, 1); 1436 /* NOTREACHED */ 1437 } 1438 return 1; /* Keep lint, etc., happy */ 1439 } 1440 1441 /*VARARGS*/ 1442 quit() 1443 { 1444 (void) call(bye, "bye", "fromquit", 0); 1445 Exit(0); 1446 /*NOTREACHED*/ 1447 } 1448 1449 /*VARARGS*/ 1450 int 1451 logout() 1452 { 1453 send_do(TELOPT_LOGOUT, 1); 1454 (void) netflush(); 1455 return 1; 1456 } 1457 1458 1459 /* 1460 * The SLC command. 1461 */ 1462 1463 struct slclist { 1464 char *name; 1465 char *help; 1466 void (*handler)(); 1467 int arg; 1468 }; 1469 1470 static void slc_help(); 1471 1472 struct slclist SlcList[] = { 1473 { "export", "Use local special character definitions", 1474 slc_mode_export, 0 }, 1475 { "import", "Use remote special character definitions", 1476 slc_mode_import, 1 }, 1477 { "check", "Verify remote special character definitions", 1478 slc_mode_import, 0 }, 1479 { "help", 0, slc_help, 0 }, 1480 { "?", "Print help information", slc_help, 0 }, 1481 { 0 }, 1482 }; 1483 1484 static void 1485 slc_help() 1486 { 1487 struct slclist *c; 1488 1489 for (c = SlcList; c->name; c++) { 1490 if (c->help) { 1491 if (*c->help) 1492 printf("%-15s %s\n", c->name, c->help); 1493 else 1494 printf("\n"); 1495 } 1496 } 1497 } 1498 1499 static struct slclist * 1500 getslc(name) 1501 char *name; 1502 { 1503 return (struct slclist *) 1504 genget(name, (char **) SlcList, sizeof(struct slclist)); 1505 } 1506 1507 static 1508 slccmd(argc, argv) 1509 int argc; 1510 char *argv[]; 1511 { 1512 struct slclist *c; 1513 1514 if (argc != 2) { 1515 fprintf(stderr, 1516 "Need an argument to 'slc' command. 'slc ?' for help.\n"); 1517 return 0; 1518 } 1519 c = getslc(argv[1]); 1520 if (c == 0) { 1521 fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\n", 1522 argv[1]); 1523 return 0; 1524 } 1525 if (Ambiguous(c)) { 1526 fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\n", 1527 argv[1]); 1528 return 0; 1529 } 1530 (*c->handler)(c->arg); 1531 slcstate(); 1532 return 1; 1533 } 1534 1535 /* 1536 * The ENVIRON command. 1537 */ 1538 1539 struct envlist { 1540 char *name; 1541 char *help; 1542 void (*handler)(); 1543 int narg; 1544 }; 1545 1546 extern struct env_lst * 1547 env_define P((unsigned char *, unsigned char *)); 1548 extern void 1549 env_undefine P((unsigned char *)), 1550 env_export P((unsigned char *)), 1551 env_unexport P((unsigned char *)), 1552 env_send P((unsigned char *)), 1553 #if defined(OLD_ENVIRON) && defined(ENV_HACK) 1554 env_varval P((unsigned char *)), 1555 #endif 1556 env_list P((void)); 1557 static void 1558 env_help P((void)); 1559 1560 struct envlist EnvList[] = { 1561 { "define", "Define an environment variable", 1562 (void (*)())env_define, 2 }, 1563 { "undefine", "Undefine an environment variable", 1564 env_undefine, 1 }, 1565 { "export", "Mark an environment variable for automatic export", 1566 env_export, 1 }, 1567 { "unexport", "Don't mark an environment variable for automatic export", 1568 env_unexport, 1 }, 1569 { "send", "Send an environment variable", env_send, 1 }, 1570 { "list", "List the current environment variables", 1571 env_list, 0 }, 1572 #if defined(OLD_ENVIRON) && defined(ENV_HACK) 1573 { "varval", "Reverse VAR and VALUE (auto, right, wrong, status)", 1574 env_varval, 1 }, 1575 #endif 1576 { "help", 0, env_help, 0 }, 1577 { "?", "Print help information", env_help, 0 }, 1578 { 0 }, 1579 }; 1580 1581 static void 1582 env_help() 1583 { 1584 struct envlist *c; 1585 1586 for (c = EnvList; c->name; c++) { 1587 if (c->help) { 1588 if (*c->help) 1589 printf("%-15s %s\n", c->name, c->help); 1590 else 1591 printf("\n"); 1592 } 1593 } 1594 } 1595 1596 static struct envlist * 1597 getenvcmd(name) 1598 char *name; 1599 { 1600 return (struct envlist *) 1601 genget(name, (char **) EnvList, sizeof(struct envlist)); 1602 } 1603 1604 env_cmd(argc, argv) 1605 int argc; 1606 char *argv[]; 1607 { 1608 struct envlist *c; 1609 1610 if (argc < 2) { 1611 fprintf(stderr, 1612 "Need an argument to 'environ' command. 'environ ?' for help.\n"); 1613 return 0; 1614 } 1615 c = getenvcmd(argv[1]); 1616 if (c == 0) { 1617 fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\n", 1618 argv[1]); 1619 return 0; 1620 } 1621 if (Ambiguous(c)) { 1622 fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\n", 1623 argv[1]); 1624 return 0; 1625 } 1626 if (c->narg + 2 != argc) { 1627 fprintf(stderr, 1628 "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\n", 1629 c->narg < argc + 2 ? "only " : "", 1630 c->narg, c->narg == 1 ? "" : "s", c->name); 1631 return 0; 1632 } 1633 (*c->handler)(argv[2], argv[3]); 1634 return 1; 1635 } 1636 1637 struct env_lst { 1638 struct env_lst *next; /* pointer to next structure */ 1639 struct env_lst *prev; /* pointer to previous structure */ 1640 unsigned char *var; /* pointer to variable name */ 1641 unsigned char *value; /* pointer to variable value */ 1642 int export; /* 1 -> export with default list of variables */ 1643 int welldefined; /* A well defined variable */ 1644 }; 1645 1646 struct env_lst envlisthead; 1647 1648 struct env_lst * 1649 env_find(var) 1650 unsigned char *var; 1651 { 1652 register struct env_lst *ep; 1653 1654 for (ep = envlisthead.next; ep; ep = ep->next) { 1655 if (strcmp((char *)ep->var, (char *)var) == 0) 1656 return(ep); 1657 } 1658 return(NULL); 1659 } 1660 1661 void 1662 env_init() 1663 { 1664 extern char **environ; 1665 register char **epp, *cp; 1666 register struct env_lst *ep; 1667 extern char *index(); 1668 1669 for (epp = environ; *epp; epp++) { 1670 if (cp = index(*epp, '=')) { 1671 *cp = '\0'; 1672 ep = env_define((unsigned char *)*epp, 1673 (unsigned char *)cp+1); 1674 ep->export = 0; 1675 *cp = '='; 1676 } 1677 } 1678 /* 1679 * Special case for DISPLAY variable. If it is ":0.0" or 1680 * "unix:0.0", we have to get rid of "unix" and insert our 1681 * hostname. 1682 */ 1683 if ((ep = env_find("DISPLAY")) 1684 && ((*ep->value == ':') 1685 || (strncmp((char *)ep->value, "unix:", 5) == 0))) { 1686 char hbuf[256+1]; 1687 char *cp2 = index((char *)ep->value, ':'); 1688 1689 gethostname(hbuf, 256); 1690 hbuf[256] = '\0'; 1691 cp = (char *)malloc(strlen(hbuf) + strlen(cp2) + 1); 1692 sprintf((char *)cp, "%s%s", hbuf, cp2); 1693 free(ep->value); 1694 ep->value = (unsigned char *)cp; 1695 } 1696 /* 1697 * If USER is not defined, but LOGNAME is, then add 1698 * USER with the value from LOGNAME. By default, we 1699 * don't export the USER variable. 1700 */ 1701 if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) { 1702 env_define((unsigned char *)"USER", ep->value); 1703 env_unexport((unsigned char *)"USER"); 1704 } 1705 env_export((unsigned char *)"DISPLAY"); 1706 env_export((unsigned char *)"PRINTER"); 1707 } 1708 1709 struct env_lst * 1710 env_define(var, value) 1711 unsigned char *var, *value; 1712 { 1713 register struct env_lst *ep; 1714 1715 if (ep = env_find(var)) { 1716 if (ep->var) 1717 free(ep->var); 1718 if (ep->value) 1719 free(ep->value); 1720 } else { 1721 ep = (struct env_lst *)malloc(sizeof(struct env_lst)); 1722 ep->next = envlisthead.next; 1723 envlisthead.next = ep; 1724 ep->prev = &envlisthead; 1725 if (ep->next) 1726 ep->next->prev = ep; 1727 } 1728 ep->welldefined = opt_welldefined(var); 1729 ep->export = 1; 1730 ep->var = (unsigned char *)strdup((char *)var); 1731 ep->value = (unsigned char *)strdup((char *)value); 1732 return(ep); 1733 } 1734 1735 void 1736 env_undefine(var) 1737 unsigned char *var; 1738 { 1739 register struct env_lst *ep; 1740 1741 if (ep = env_find(var)) { 1742 ep->prev->next = ep->next; 1743 if (ep->next) 1744 ep->next->prev = ep->prev; 1745 if (ep->var) 1746 free(ep->var); 1747 if (ep->value) 1748 free(ep->value); 1749 free(ep); 1750 } 1751 } 1752 1753 void 1754 env_export(var) 1755 unsigned char *var; 1756 { 1757 register struct env_lst *ep; 1758 1759 if (ep = env_find(var)) 1760 ep->export = 1; 1761 } 1762 1763 void 1764 env_unexport(var) 1765 unsigned char *var; 1766 { 1767 register struct env_lst *ep; 1768 1769 if (ep = env_find(var)) 1770 ep->export = 0; 1771 } 1772 1773 void 1774 env_send(var) 1775 unsigned char *var; 1776 { 1777 register struct env_lst *ep; 1778 1779 if (my_state_is_wont(TELOPT_NEW_ENVIRON) 1780 #ifdef OLD_ENVIRON 1781 && my_state_is_wont(TELOPT_OLD_ENVIRON) 1782 #endif 1783 ) { 1784 fprintf(stderr, 1785 "Cannot send '%s': Telnet ENVIRON option not enabled\n", 1786 var); 1787 return; 1788 } 1789 ep = env_find(var); 1790 if (ep == 0) { 1791 fprintf(stderr, "Cannot send '%s': variable not defined\n", 1792 var); 1793 return; 1794 } 1795 env_opt_start_info(); 1796 env_opt_add(ep->var); 1797 env_opt_end(0); 1798 } 1799 1800 void 1801 env_list() 1802 { 1803 register struct env_lst *ep; 1804 1805 for (ep = envlisthead.next; ep; ep = ep->next) { 1806 printf("%c %-20s %s\n", ep->export ? '*' : ' ', 1807 ep->var, ep->value); 1808 } 1809 } 1810 1811 unsigned char * 1812 env_default(init, welldefined) 1813 int init; 1814 { 1815 static struct env_lst *nep = NULL; 1816 1817 if (init) { 1818 nep = &envlisthead; 1819 return; 1820 } 1821 if (nep) { 1822 while (nep = nep->next) { 1823 if (nep->export && (nep->welldefined == welldefined)) 1824 return(nep->var); 1825 } 1826 } 1827 return(NULL); 1828 } 1829 1830 unsigned char * 1831 env_getvalue(var) 1832 unsigned char *var; 1833 { 1834 register struct env_lst *ep; 1835 1836 if (ep = env_find(var)) 1837 return(ep->value); 1838 return(NULL); 1839 } 1840 1841 #if defined(OLD_ENVIRON) && defined(ENV_HACK) 1842 void 1843 env_varval(what) 1844 unsigned char *what; 1845 { 1846 extern int old_env_var, old_env_value, env_auto; 1847 int len = strlen((char *)what); 1848 1849 if (len == 0) 1850 goto unknown; 1851 1852 if (strncasecmp((char *)what, "status", len) == 0) { 1853 if (env_auto) 1854 printf("%s%s", "VAR and VALUE are/will be ", 1855 "determined automatically\n"); 1856 if (old_env_var == OLD_ENV_VAR) 1857 printf("VAR and VALUE set to correct definitions\n"); 1858 else 1859 printf("VAR and VALUE definitions are reversed\n"); 1860 } else if (strncasecmp((char *)what, "auto", len) == 0) { 1861 env_auto = 1; 1862 old_env_var = OLD_ENV_VALUE; 1863 old_env_value = OLD_ENV_VAR; 1864 } else if (strncasecmp((char *)what, "right", len) == 0) { 1865 env_auto = 0; 1866 old_env_var = OLD_ENV_VAR; 1867 old_env_value = OLD_ENV_VALUE; 1868 } else if (strncasecmp((char *)what, "wrong", len) == 0) { 1869 env_auto = 0; 1870 old_env_var = OLD_ENV_VALUE; 1871 old_env_value = OLD_ENV_VAR; 1872 } else { 1873 unknown: 1874 printf("Unknown \"varval\" command. (\"auto\", \"right\", \"wrong\", \"status\")\n"); 1875 } 1876 } 1877 #endif 1878 1879 #if defined(AUTHENTICATION) 1880 /* 1881 * The AUTHENTICATE command. 1882 */ 1883 1884 struct authlist { 1885 char *name; 1886 char *help; 1887 int (*handler)(); 1888 int narg; 1889 }; 1890 1891 extern int 1892 auth_enable P((int)), 1893 auth_disable P((int)), 1894 auth_status P((void)); 1895 static int 1896 auth_help P((void)); 1897 1898 struct authlist AuthList[] = { 1899 { "status", "Display current status of authentication information", 1900 auth_status, 0 }, 1901 { "disable", "Disable an authentication type ('auth disable ?' for more)", 1902 auth_disable, 1 }, 1903 { "enable", "Enable an authentication type ('auth enable ?' for more)", 1904 auth_enable, 1 }, 1905 { "help", 0, auth_help, 0 }, 1906 { "?", "Print help information", auth_help, 0 }, 1907 { 0 }, 1908 }; 1909 1910 static int 1911 auth_help() 1912 { 1913 struct authlist *c; 1914 1915 for (c = AuthList; c->name; c++) { 1916 if (c->help) { 1917 if (*c->help) 1918 printf("%-15s %s\n", c->name, c->help); 1919 else 1920 printf("\n"); 1921 } 1922 } 1923 return 0; 1924 } 1925 1926 auth_cmd(argc, argv) 1927 int argc; 1928 char *argv[]; 1929 { 1930 struct authlist *c; 1931 1932 c = (struct authlist *) 1933 genget(argv[1], (char **) AuthList, sizeof(struct authlist)); 1934 if (c == 0) { 1935 fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\n", 1936 argv[1]); 1937 return 0; 1938 } 1939 if (Ambiguous(c)) { 1940 fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\n", 1941 argv[1]); 1942 return 0; 1943 } 1944 if (c->narg + 2 != argc) { 1945 fprintf(stderr, 1946 "Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\n", 1947 c->narg < argc + 2 ? "only " : "", 1948 c->narg, c->narg == 1 ? "" : "s", c->name); 1949 return 0; 1950 } 1951 return((*c->handler)(argv[2], argv[3])); 1952 } 1953 #endif 1954 1955 #ifdef ENCRYPTION 1956 /* 1957 * The ENCRYPT command. 1958 */ 1959 1960 struct encryptlist { 1961 char *name; 1962 char *help; 1963 int (*handler)(); 1964 int needconnect; 1965 int minarg; 1966 int maxarg; 1967 }; 1968 1969 extern int 1970 EncryptEnable P((char *, char *)), 1971 EncryptDisable P((char *, char *)), 1972 EncryptType P((char *, char *)), 1973 EncryptStart P((char *)), 1974 EncryptStartInput P((void)), 1975 EncryptStartOutput P((void)), 1976 EncryptStop P((char *)), 1977 EncryptStopInput P((void)), 1978 EncryptStopOutput P((void)), 1979 EncryptStatus P((void)); 1980 static int 1981 EncryptHelp P((void)); 1982 1983 struct encryptlist EncryptList[] = { 1984 { "enable", "Enable encryption. ('encrypt enable ?' for more)", 1985 EncryptEnable, 1, 1, 2 }, 1986 { "disable", "Disable encryption. ('encrypt enable ?' for more)", 1987 EncryptDisable, 0, 1, 2 }, 1988 { "type", "Set encryptiong type. ('encrypt type ?' for more)", 1989 EncryptType, 0, 1, 1 }, 1990 { "start", "Start encryption. ('encrypt start ?' for more)", 1991 EncryptStart, 1, 0, 1 }, 1992 { "stop", "Stop encryption. ('encrypt stop ?' for more)", 1993 EncryptStop, 1, 0, 1 }, 1994 { "input", "Start encrypting the input stream", 1995 EncryptStartInput, 1, 0, 0 }, 1996 { "-input", "Stop encrypting the input stream", 1997 EncryptStopInput, 1, 0, 0 }, 1998 { "output", "Start encrypting the output stream", 1999 EncryptStartOutput, 1, 0, 0 }, 2000 { "-output", "Stop encrypting the output stream", 2001 EncryptStopOutput, 1, 0, 0 }, 2002 2003 { "status", "Display current status of authentication information", 2004 EncryptStatus, 0, 0, 0 }, 2005 { "help", 0, EncryptHelp, 0, 0, 0 }, 2006 { "?", "Print help information", EncryptHelp, 0, 0, 0 }, 2007 { 0 }, 2008 }; 2009 2010 static int 2011 EncryptHelp() 2012 { 2013 struct encryptlist *c; 2014 2015 for (c = EncryptList; c->name; c++) { 2016 if (c->help) { 2017 if (*c->help) 2018 printf("%-15s %s\n", c->name, c->help); 2019 else 2020 printf("\n"); 2021 } 2022 } 2023 return 0; 2024 } 2025 2026 encrypt_cmd(argc, argv) 2027 int argc; 2028 char *argv[]; 2029 { 2030 struct encryptlist *c; 2031 2032 c = (struct encryptlist *) 2033 genget(argv[1], (char **) EncryptList, sizeof(struct encryptlist)); 2034 if (c == 0) { 2035 fprintf(stderr, "'%s': unknown argument ('encrypt ?' for help).\n", 2036 argv[1]); 2037 return 0; 2038 } 2039 if (Ambiguous(c)) { 2040 fprintf(stderr, "'%s': ambiguous argument ('encrypt ?' for help).\n", 2041 argv[1]); 2042 return 0; 2043 } 2044 argc -= 2; 2045 if (argc < c->minarg || argc > c->maxarg) { 2046 if (c->minarg == c->maxarg) { 2047 fprintf(stderr, "Need %s%d argument%s ", 2048 c->minarg < argc ? "only " : "", c->minarg, 2049 c->minarg == 1 ? "" : "s"); 2050 } else { 2051 fprintf(stderr, "Need %s%d-%d arguments ", 2052 c->maxarg < argc ? "only " : "", c->minarg, c->maxarg); 2053 } 2054 fprintf(stderr, "to 'encrypt %s' command. 'encrypt ?' for help.\n", 2055 c->name); 2056 return 0; 2057 } 2058 if (c->needconnect && !connected) { 2059 if (!(argc && (isprefix(argv[2], "help") || isprefix(argv[2], "?")))) { 2060 printf("?Need to be connected first.\n"); 2061 return 0; 2062 } 2063 } 2064 return ((*c->handler)(argc > 0 ? argv[2] : 0, 2065 argc > 1 ? argv[3] : 0, 2066 argc > 2 ? argv[4] : 0)); 2067 } 2068 #endif /* ENCRYPTION */ 2069 2070 #if defined(unix) && defined(TN3270) 2071 static void 2072 filestuff(fd) 2073 int fd; 2074 { 2075 int res; 2076 2077 #ifdef F_GETOWN 2078 setconnmode(0); 2079 res = fcntl(fd, F_GETOWN, 0); 2080 setcommandmode(); 2081 2082 if (res == -1) { 2083 perror("fcntl"); 2084 return; 2085 } 2086 printf("\tOwner is %d.\n", res); 2087 #endif 2088 2089 setconnmode(0); 2090 res = fcntl(fd, F_GETFL, 0); 2091 setcommandmode(); 2092 2093 if (res == -1) { 2094 perror("fcntl"); 2095 return; 2096 } 2097 #ifdef notdef 2098 printf("\tFlags are 0x%x: %s\n", res, decodeflags(res)); 2099 #endif 2100 } 2101 #endif /* defined(unix) && defined(TN3270) */ 2102 2103 /* 2104 * Print status about the connection. 2105 */ 2106 /*ARGSUSED*/ 2107 static 2108 status(argc, argv) 2109 int argc; 2110 char *argv[]; 2111 { 2112 if (connected) { 2113 printf("Connected to %s.\n", hostname); 2114 if ((argc < 2) || strcmp(argv[1], "notmuch")) { 2115 int mode = getconnmode(); 2116 2117 if (my_want_state_is_will(TELOPT_LINEMODE)) { 2118 printf("Operating with LINEMODE option\n"); 2119 printf("%s line editing\n", (mode&MODE_EDIT) ? "Local" : "No"); 2120 printf("%s catching of signals\n", 2121 (mode&MODE_TRAPSIG) ? "Local" : "No"); 2122 slcstate(); 2123 #ifdef KLUDGELINEMODE 2124 } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) { 2125 printf("Operating in obsolete linemode\n"); 2126 #endif 2127 } else { 2128 printf("Operating in single character mode\n"); 2129 if (localchars) 2130 printf("Catching signals locally\n"); 2131 } 2132 printf("%s character echo\n", (mode&MODE_ECHO) ? "Local" : "Remote"); 2133 if (my_want_state_is_will(TELOPT_LFLOW)) 2134 printf("%s flow control\n", (mode&MODE_FLOW) ? "Local" : "No"); 2135 #ifdef ENCRYPTION 2136 encrypt_display(); 2137 #endif /* ENCRYPTION */ 2138 } 2139 } else { 2140 printf("No connection.\n"); 2141 } 2142 # if !defined(TN3270) 2143 printf("Escape character is '%s'.\n", control(escape)); 2144 (void) fflush(stdout); 2145 # else /* !defined(TN3270) */ 2146 if ((!In3270) && ((argc < 2) || strcmp(argv[1], "notmuch"))) { 2147 printf("Escape character is '%s'.\n", control(escape)); 2148 } 2149 # if defined(unix) 2150 if ((argc >= 2) && !strcmp(argv[1], "everything")) { 2151 printf("SIGIO received %d time%s.\n", 2152 sigiocount, (sigiocount == 1)? "":"s"); 2153 if (In3270) { 2154 printf("Process ID %d, process group %d.\n", 2155 getpid(), getpgrp(getpid())); 2156 printf("Terminal input:\n"); 2157 filestuff(tin); 2158 printf("Terminal output:\n"); 2159 filestuff(tout); 2160 printf("Network socket:\n"); 2161 filestuff(net); 2162 } 2163 } 2164 if (In3270 && transcom) { 2165 printf("Transparent mode command is '%s'.\n", transcom); 2166 } 2167 # endif /* defined(unix) */ 2168 (void) fflush(stdout); 2169 if (In3270) { 2170 return 0; 2171 } 2172 # endif /* defined(TN3270) */ 2173 return 1; 2174 } 2175 2176 #ifdef SIGINFO 2177 /* 2178 * Function that gets called when SIGINFO is received. 2179 */ 2180 ayt_status() 2181 { 2182 (void) call(status, "status", "notmuch", 0); 2183 } 2184 #endif 2185 2186 unsigned long inet_addr(); 2187 2188 int 2189 tn(argc, argv) 2190 int argc; 2191 char *argv[]; 2192 { 2193 register struct hostent *host = 0; 2194 struct sockaddr_in sin; 2195 struct servent *sp = 0; 2196 unsigned long temp; 2197 extern char *inet_ntoa(); 2198 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2199 char *srp = 0, *strrchr(); 2200 unsigned long sourceroute(), srlen; 2201 #endif 2202 char *cmd, *hostp = 0, *portp = 0, *user = 0; 2203 2204 /* clear the socket address prior to use */ 2205 bzero((char *)&sin, sizeof(sin)); 2206 2207 if (connected) { 2208 printf("?Already connected to %s\n", hostname); 2209 setuid(getuid()); 2210 return 0; 2211 } 2212 if (argc < 2) { 2213 (void) strcpy(line, "open "); 2214 printf("(to) "); 2215 (void) fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin); 2216 makeargv(); 2217 argc = margc; 2218 argv = margv; 2219 } 2220 cmd = *argv; 2221 --argc; ++argv; 2222 while (argc) { 2223 if (isprefix(*argv, "help") || isprefix(*argv, "?")) 2224 goto usage; 2225 if (strcmp(*argv, "-l") == 0) { 2226 --argc; ++argv; 2227 if (argc == 0) 2228 goto usage; 2229 user = *argv++; 2230 --argc; 2231 continue; 2232 } 2233 if (strcmp(*argv, "-a") == 0) { 2234 --argc; ++argv; 2235 autologin = 1; 2236 continue; 2237 } 2238 if (hostp == 0) { 2239 hostp = *argv++; 2240 --argc; 2241 continue; 2242 } 2243 if (portp == 0) { 2244 portp = *argv++; 2245 --argc; 2246 continue; 2247 } 2248 usage: 2249 printf("usage: %s [-l user] [-a] host-name [port]\n", cmd); 2250 setuid(getuid()); 2251 return 0; 2252 } 2253 if (hostp == 0) 2254 goto usage; 2255 2256 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2257 if (hostp[0] == '@' || hostp[0] == '!') { 2258 if ((hostname = strrchr(hostp, ':')) == NULL) 2259 hostname = strrchr(hostp, '@'); 2260 hostname++; 2261 srp = 0; 2262 temp = sourceroute(hostp, &srp, &srlen); 2263 if (temp == 0) { 2264 herror(srp); 2265 setuid(getuid()); 2266 return 0; 2267 } else if (temp == -1) { 2268 printf("Bad source route option: %s\n", hostp); 2269 setuid(getuid()); 2270 return 0; 2271 } else { 2272 sin.sin_addr.s_addr = temp; 2273 sin.sin_family = AF_INET; 2274 } 2275 } else { 2276 #endif 2277 temp = inet_addr(hostp); 2278 if (temp != (unsigned long) -1) { 2279 sin.sin_addr.s_addr = temp; 2280 sin.sin_family = AF_INET; 2281 (void) strcpy(_hostname, hostp); 2282 hostname = _hostname; 2283 } else { 2284 host = gethostbyname(hostp); 2285 if (host) { 2286 sin.sin_family = host->h_addrtype; 2287 #if defined(h_addr) /* In 4.3, this is a #define */ 2288 memcpy((caddr_t)&sin.sin_addr, 2289 host->h_addr_list[0], host->h_length); 2290 #else /* defined(h_addr) */ 2291 memcpy((caddr_t)&sin.sin_addr, host->h_addr, host->h_length); 2292 #endif /* defined(h_addr) */ 2293 strncpy(_hostname, host->h_name, sizeof(_hostname)); 2294 _hostname[sizeof(_hostname)-1] = '\0'; 2295 hostname = _hostname; 2296 } else { 2297 herror(hostp); 2298 setuid(getuid()); 2299 return 0; 2300 } 2301 } 2302 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2303 } 2304 #endif 2305 if (portp) { 2306 if (*portp == '-') { 2307 portp++; 2308 telnetport = 1; 2309 } else 2310 telnetport = 0; 2311 sin.sin_port = atoi(portp); 2312 if (sin.sin_port == 0) { 2313 sp = getservbyname(portp, "tcp"); 2314 if (sp) 2315 sin.sin_port = sp->s_port; 2316 else { 2317 printf("%s: bad port number\n", portp); 2318 setuid(getuid()); 2319 return 0; 2320 } 2321 } else { 2322 #if !defined(htons) 2323 u_short htons P((unsigned short)); 2324 #endif /* !defined(htons) */ 2325 sin.sin_port = htons(sin.sin_port); 2326 } 2327 } else { 2328 if (sp == 0) { 2329 sp = getservbyname("telnet", "tcp"); 2330 if (sp == 0) { 2331 fprintf(stderr, "telnet: tcp/telnet: unknown service\n"); 2332 setuid(getuid()); 2333 return 0; 2334 } 2335 sin.sin_port = sp->s_port; 2336 } 2337 telnetport = 1; 2338 } 2339 printf("Trying %s...\n", inet_ntoa(sin.sin_addr)); 2340 do { 2341 net = socket(AF_INET, SOCK_STREAM, 0); 2342 setuid(getuid()); 2343 if (net < 0) { 2344 perror("telnet: socket"); 2345 return 0; 2346 } 2347 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2348 if (srp && setsockopt(net, IPPROTO_IP, IP_OPTIONS, (char *)srp, srlen) < 0) 2349 perror("setsockopt (IP_OPTIONS)"); 2350 #endif 2351 #if defined(IPPROTO_IP) && defined(IP_TOS) 2352 { 2353 # if defined(HAS_GETTOS) 2354 struct tosent *tp; 2355 if (tos < 0 && (tp = gettosbyname("telnet", "tcp"))) 2356 tos = tp->t_tos; 2357 # endif 2358 if (tos < 0) 2359 tos = 020; /* Low Delay bit */ 2360 if (tos 2361 && (setsockopt(net, IPPROTO_IP, IP_TOS, 2362 (char *)&tos, sizeof(int)) < 0) 2363 && (errno != ENOPROTOOPT)) 2364 perror("telnet: setsockopt (IP_TOS) (ignored)"); 2365 } 2366 #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 2367 2368 if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) { 2369 perror("setsockopt (SO_DEBUG)"); 2370 } 2371 2372 if (connect(net, (struct sockaddr *)&sin, sizeof (sin)) < 0) { 2373 #if defined(h_addr) /* In 4.3, this is a #define */ 2374 if (host && host->h_addr_list[1]) { 2375 int oerrno = errno; 2376 2377 fprintf(stderr, "telnet: connect to address %s: ", 2378 inet_ntoa(sin.sin_addr)); 2379 errno = oerrno; 2380 perror((char *)0); 2381 host->h_addr_list++; 2382 memcpy((caddr_t)&sin.sin_addr, 2383 host->h_addr_list[0], host->h_length); 2384 (void) NetClose(net); 2385 continue; 2386 } 2387 #endif /* defined(h_addr) */ 2388 perror("telnet: Unable to connect to remote host"); 2389 return 0; 2390 } 2391 connected++; 2392 #if defined(AUTHENTICATION) || defined(ENCRYPTION) 2393 auth_encrypt_connect(connected); 2394 #endif /* defined(AUTHENTICATION) || defined(ENCRYPTION) */ 2395 } while (connected == 0); 2396 cmdrc(hostp, hostname); 2397 if (autologin && user == NULL) { 2398 struct passwd *pw; 2399 2400 user = getenv("USER"); 2401 if (user == NULL || 2402 (pw = getpwnam(user)) && pw->pw_uid != getuid()) { 2403 if (pw = getpwuid(getuid())) 2404 user = pw->pw_name; 2405 else 2406 user = NULL; 2407 } 2408 } 2409 if (user) { 2410 env_define((unsigned char *)"USER", (unsigned char *)user); 2411 env_export((unsigned char *)"USER"); 2412 } 2413 (void) call(status, "status", "notmuch", 0); 2414 if (setjmp(peerdied) == 0) 2415 telnet(user); 2416 (void) NetClose(net); 2417 ExitString("Connection closed by foreign host.\n",1); 2418 /*NOTREACHED*/ 2419 } 2420 2421 #define HELPINDENT (sizeof ("connect")) 2422 2423 static char 2424 openhelp[] = "connect to a site", 2425 closehelp[] = "close current connection", 2426 logouthelp[] = "forcibly logout remote user and close the connection", 2427 quithelp[] = "exit telnet", 2428 statushelp[] = "print status information", 2429 helphelp[] = "print help information", 2430 sendhelp[] = "transmit special characters ('send ?' for more)", 2431 sethelp[] = "set operating parameters ('set ?' for more)", 2432 unsethelp[] = "unset operating parameters ('unset ?' for more)", 2433 togglestring[] ="toggle operating parameters ('toggle ?' for more)", 2434 slchelp[] = "change state of special charaters ('slc ?' for more)", 2435 displayhelp[] = "display operating parameters", 2436 #if defined(TN3270) && defined(unix) 2437 transcomhelp[] = "specify Unix command for transparent mode pipe", 2438 #endif /* defined(TN3270) && defined(unix) */ 2439 #if defined(AUTHENTICATION) 2440 authhelp[] = "turn on (off) authentication ('auth ?' for more)", 2441 #endif 2442 #ifdef ENCRYPTION 2443 encrypthelp[] = "turn on (off) encryption ('encrypt ?' for more)", 2444 #endif /* ENCRYPTION */ 2445 #if defined(unix) 2446 zhelp[] = "suspend telnet", 2447 #endif /* defined(unix) */ 2448 shellhelp[] = "invoke a subshell", 2449 envhelp[] = "change environment variables ('environ ?' for more)", 2450 modestring[] = "try to enter line or character mode ('mode ?' for more)"; 2451 2452 static int help(); 2453 2454 static Command cmdtab[] = { 2455 { "close", closehelp, bye, 1 }, 2456 { "logout", logouthelp, logout, 1 }, 2457 { "display", displayhelp, display, 0 }, 2458 { "mode", modestring, modecmd, 0 }, 2459 { "open", openhelp, tn, 0 }, 2460 { "quit", quithelp, quit, 0 }, 2461 { "send", sendhelp, sendcmd, 0 }, 2462 { "set", sethelp, setcmd, 0 }, 2463 { "unset", unsethelp, unsetcmd, 0 }, 2464 { "status", statushelp, status, 0 }, 2465 { "toggle", togglestring, toggle, 0 }, 2466 { "slc", slchelp, slccmd, 0 }, 2467 #if defined(TN3270) && defined(unix) 2468 { "transcom", transcomhelp, settranscom, 0 }, 2469 #endif /* defined(TN3270) && defined(unix) */ 2470 #if defined(AUTHENTICATION) 2471 { "auth", authhelp, auth_cmd, 0 }, 2472 #endif 2473 #ifdef ENCRYPTION 2474 { "encrypt", encrypthelp, encrypt_cmd, 0 }, 2475 #endif /* ENCRYPTION */ 2476 #if defined(unix) 2477 { "z", zhelp, suspend, 0 }, 2478 #endif /* defined(unix) */ 2479 #if defined(TN3270) 2480 { "!", shellhelp, shell, 1 }, 2481 #else 2482 { "!", shellhelp, shell, 0 }, 2483 #endif 2484 { "environ", envhelp, env_cmd, 0 }, 2485 { "?", helphelp, help, 0 }, 2486 0 2487 }; 2488 2489 static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead"; 2490 static char escapehelp[] = "deprecated command -- use 'set escape' instead"; 2491 2492 static Command cmdtab2[] = { 2493 { "help", 0, help, 0 }, 2494 { "escape", escapehelp, setescape, 0 }, 2495 { "crmod", crmodhelp, togcrmod, 0 }, 2496 0 2497 }; 2498 2499 2500 /* 2501 * Call routine with argc, argv set from args (terminated by 0). 2502 */ 2503 2504 /*VARARGS1*/ 2505 static 2506 call(va_alist) 2507 va_dcl 2508 { 2509 va_list ap; 2510 typedef int (*intrtn_t)(); 2511 intrtn_t routine; 2512 char *args[100]; 2513 int argno = 0; 2514 2515 va_start(ap); 2516 routine = (va_arg(ap, intrtn_t)); 2517 while ((args[argno++] = va_arg(ap, char *)) != 0) { 2518 ; 2519 } 2520 va_end(ap); 2521 return (*routine)(argno-1, args); 2522 } 2523 2524 2525 static Command * 2526 getcmd(name) 2527 char *name; 2528 { 2529 Command *cm; 2530 2531 if (cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command))) 2532 return cm; 2533 return (Command *) genget(name, (char **) cmdtab2, sizeof(Command)); 2534 } 2535 2536 void 2537 command(top, tbuf, cnt) 2538 int top; 2539 char *tbuf; 2540 int cnt; 2541 { 2542 register Command *c; 2543 2544 setcommandmode(); 2545 if (!top) { 2546 putchar('\n'); 2547 #if defined(unix) 2548 } else { 2549 (void) signal(SIGINT, SIG_DFL); 2550 (void) signal(SIGQUIT, SIG_DFL); 2551 #endif /* defined(unix) */ 2552 } 2553 for (;;) { 2554 if (rlogin == _POSIX_VDISABLE) 2555 printf("%s> ", prompt); 2556 if (tbuf) { 2557 register char *cp; 2558 cp = line; 2559 while (cnt > 0 && (*cp++ = *tbuf++) != '\n') 2560 cnt--; 2561 tbuf = 0; 2562 if (cp == line || *--cp != '\n' || cp == line) 2563 goto getline; 2564 *cp = '\0'; 2565 if (rlogin == _POSIX_VDISABLE) 2566 printf("%s\n", line); 2567 } else { 2568 getline: 2569 if (rlogin != _POSIX_VDISABLE) 2570 printf("%s> ", prompt); 2571 if (fgets(line, sizeof(line), stdin) == NULL) { 2572 if (feof(stdin) || ferror(stdin)) { 2573 (void) quit(); 2574 /*NOTREACHED*/ 2575 } 2576 break; 2577 } 2578 } 2579 if (line[0] == 0) 2580 break; 2581 makeargv(); 2582 if (margv[0] == 0) { 2583 break; 2584 } 2585 c = getcmd(margv[0]); 2586 if (Ambiguous(c)) { 2587 printf("?Ambiguous command\n"); 2588 continue; 2589 } 2590 if (c == 0) { 2591 printf("?Invalid command\n"); 2592 continue; 2593 } 2594 if (c->needconnect && !connected) { 2595 printf("?Need to be connected first.\n"); 2596 continue; 2597 } 2598 if ((*c->handler)(margc, margv)) { 2599 break; 2600 } 2601 } 2602 if (!top) { 2603 if (!connected) { 2604 longjmp(toplevel, 1); 2605 /*NOTREACHED*/ 2606 } 2607 #if defined(TN3270) 2608 if (shell_active == 0) { 2609 setconnmode(0); 2610 } 2611 #else /* defined(TN3270) */ 2612 setconnmode(0); 2613 #endif /* defined(TN3270) */ 2614 } 2615 } 2616 2617 /* 2618 * Help command. 2619 */ 2620 static 2621 help(argc, argv) 2622 int argc; 2623 char *argv[]; 2624 { 2625 register Command *c; 2626 2627 if (argc == 1) { 2628 printf("Commands may be abbreviated. Commands are:\n\n"); 2629 for (c = cmdtab; c->name; c++) 2630 if (c->help) { 2631 printf("%-*s\t%s\n", HELPINDENT, c->name, 2632 c->help); 2633 } 2634 return 0; 2635 } 2636 while (--argc > 0) { 2637 register char *arg; 2638 arg = *++argv; 2639 c = getcmd(arg); 2640 if (Ambiguous(c)) 2641 printf("?Ambiguous help command %s\n", arg); 2642 else if (c == (Command *)0) 2643 printf("?Invalid help command %s\n", arg); 2644 else 2645 printf("%s\n", c->help); 2646 } 2647 return 0; 2648 } 2649 2650 static char *rcname = 0; 2651 static char rcbuf[128]; 2652 2653 cmdrc(m1, m2) 2654 char *m1, *m2; 2655 { 2656 register Command *c; 2657 FILE *rcfile; 2658 int gotmachine = 0; 2659 int l1 = strlen(m1); 2660 int l2 = strlen(m2); 2661 char m1save[64]; 2662 2663 if (skiprc) 2664 return; 2665 2666 strcpy(m1save, m1); 2667 m1 = m1save; 2668 2669 if (rcname == 0) { 2670 rcname = getenv("HOME"); 2671 if (rcname) 2672 strcpy(rcbuf, rcname); 2673 else 2674 rcbuf[0] = '\0'; 2675 strcat(rcbuf, "/.telnetrc"); 2676 rcname = rcbuf; 2677 } 2678 2679 if ((rcfile = fopen(rcname, "r")) == 0) { 2680 return; 2681 } 2682 2683 for (;;) { 2684 if (fgets(line, sizeof(line), rcfile) == NULL) 2685 break; 2686 if (line[0] == 0) 2687 break; 2688 if (line[0] == '#') 2689 continue; 2690 if (gotmachine) { 2691 if (!isspace(line[0])) 2692 gotmachine = 0; 2693 } 2694 if (gotmachine == 0) { 2695 if (isspace(line[0])) 2696 continue; 2697 if (strncasecmp(line, m1, l1) == 0) 2698 strncpy(line, &line[l1], sizeof(line) - l1); 2699 else if (strncasecmp(line, m2, l2) == 0) 2700 strncpy(line, &line[l2], sizeof(line) - l2); 2701 else if (strncasecmp(line, "DEFAULT", 7) == 0) 2702 strncpy(line, &line[7], sizeof(line) - 7); 2703 else 2704 continue; 2705 if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n') 2706 continue; 2707 gotmachine = 1; 2708 } 2709 makeargv(); 2710 if (margv[0] == 0) 2711 continue; 2712 c = getcmd(margv[0]); 2713 if (Ambiguous(c)) { 2714 printf("?Ambiguous command: %s\n", margv[0]); 2715 continue; 2716 } 2717 if (c == 0) { 2718 printf("?Invalid command: %s\n", margv[0]); 2719 continue; 2720 } 2721 /* 2722 * This should never happen... 2723 */ 2724 if (c->needconnect && !connected) { 2725 printf("?Need to be connected first for %s.\n", margv[0]); 2726 continue; 2727 } 2728 (*c->handler)(margc, margv); 2729 } 2730 fclose(rcfile); 2731 } 2732 2733 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2734 2735 /* 2736 * Source route is handed in as 2737 * [!]@hop1@hop2...[@|:]dst 2738 * If the leading ! is present, it is a 2739 * strict source route, otherwise it is 2740 * assmed to be a loose source route. 2741 * 2742 * We fill in the source route option as 2743 * hop1,hop2,hop3...dest 2744 * and return a pointer to hop1, which will 2745 * be the address to connect() to. 2746 * 2747 * Arguments: 2748 * arg: pointer to route list to decipher 2749 * 2750 * cpp: If *cpp is not equal to NULL, this is a 2751 * pointer to a pointer to a character array 2752 * that should be filled in with the option. 2753 * 2754 * lenp: pointer to an integer that contains the 2755 * length of *cpp if *cpp != NULL. 2756 * 2757 * Return values: 2758 * 2759 * Returns the address of the host to connect to. If the 2760 * return value is -1, there was a syntax error in the 2761 * option, either unknown characters, or too many hosts. 2762 * If the return value is 0, one of the hostnames in the 2763 * path is unknown, and *cpp is set to point to the bad 2764 * hostname. 2765 * 2766 * *cpp: If *cpp was equal to NULL, it will be filled 2767 * in with a pointer to our static area that has 2768 * the option filled in. This will be 32bit aligned. 2769 * 2770 * *lenp: This will be filled in with how long the option 2771 * pointed to by *cpp is. 2772 * 2773 */ 2774 unsigned long 2775 sourceroute(arg, cpp, lenp) 2776 char *arg; 2777 char **cpp; 2778 int *lenp; 2779 { 2780 static char lsr[44]; 2781 #ifdef sysV88 2782 static IOPTN ipopt; 2783 #endif 2784 char *cp, *cp2, *lsrp, *lsrep; 2785 register int tmp; 2786 struct in_addr sin_addr; 2787 register struct hostent *host = 0; 2788 register char c; 2789 2790 /* 2791 * Verify the arguments, and make sure we have 2792 * at least 7 bytes for the option. 2793 */ 2794 if (cpp == NULL || lenp == NULL) 2795 return((unsigned long)-1); 2796 if (*cpp != NULL && *lenp < 7) 2797 return((unsigned long)-1); 2798 /* 2799 * Decide whether we have a buffer passed to us, 2800 * or if we need to use our own static buffer. 2801 */ 2802 if (*cpp) { 2803 lsrp = *cpp; 2804 lsrep = lsrp + *lenp; 2805 } else { 2806 *cpp = lsrp = lsr; 2807 lsrep = lsrp + 44; 2808 } 2809 2810 cp = arg; 2811 2812 /* 2813 * Next, decide whether we have a loose source 2814 * route or a strict source route, and fill in 2815 * the begining of the option. 2816 */ 2817 #ifndef sysV88 2818 if (*cp == '!') { 2819 cp++; 2820 *lsrp++ = IPOPT_SSRR; 2821 } else 2822 *lsrp++ = IPOPT_LSRR; 2823 #else 2824 if (*cp == '!') { 2825 cp++; 2826 ipopt.io_type = IPOPT_SSRR; 2827 } else 2828 ipopt.io_type = IPOPT_LSRR; 2829 #endif 2830 2831 if (*cp != '@') 2832 return((unsigned long)-1); 2833 2834 #ifndef sysV88 2835 lsrp++; /* skip over length, we'll fill it in later */ 2836 *lsrp++ = 4; 2837 #endif 2838 2839 cp++; 2840 2841 sin_addr.s_addr = 0; 2842 2843 for (c = 0;;) { 2844 if (c == ':') 2845 cp2 = 0; 2846 else for (cp2 = cp; c = *cp2; cp2++) { 2847 if (c == ',') { 2848 *cp2++ = '\0'; 2849 if (*cp2 == '@') 2850 cp2++; 2851 } else if (c == '@') { 2852 *cp2++ = '\0'; 2853 } else if (c == ':') { 2854 *cp2++ = '\0'; 2855 } else 2856 continue; 2857 break; 2858 } 2859 if (!c) 2860 cp2 = 0; 2861 2862 if ((tmp = inet_addr(cp)) != -1) { 2863 sin_addr.s_addr = tmp; 2864 } else if (host = gethostbyname(cp)) { 2865 #if defined(h_addr) 2866 memcpy((caddr_t)&sin_addr, 2867 host->h_addr_list[0], host->h_length); 2868 #else 2869 memcpy((caddr_t)&sin_addr, host->h_addr, host->h_length); 2870 #endif 2871 } else { 2872 *cpp = cp; 2873 return(0); 2874 } 2875 memcpy(lsrp, (char *)&sin_addr, 4); 2876 lsrp += 4; 2877 if (cp2) 2878 cp = cp2; 2879 else 2880 break; 2881 /* 2882 * Check to make sure there is space for next address 2883 */ 2884 if (lsrp + 4 > lsrep) 2885 return((unsigned long)-1); 2886 } 2887 #ifndef sysV88 2888 if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) { 2889 *cpp = 0; 2890 *lenp = 0; 2891 return((unsigned long)-1); 2892 } 2893 *lsrp++ = IPOPT_NOP; /* 32 bit word align it */ 2894 *lenp = lsrp - *cpp; 2895 #else 2896 ipopt.io_len = lsrp - *cpp; 2897 if (ipopt.io_len <= 5) { /* Is 3 better ? */ 2898 *cpp = 0; 2899 *lenp = 0; 2900 return((unsigned long)-1); 2901 } 2902 *lenp = sizeof(ipopt); 2903 *cpp = (char *) &ipopt; 2904 #endif 2905 return(sin_addr.s_addr); 2906 } 2907 #endif 2908