1 /* 2 * Copyright (c) 1988, 1990 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 /*static char sccsid[] = "from: @(#)commands.c 5.5 (Berkeley) 3/22/91";*/ 36 static char rcsid[] = "$Id: commands.c,v 1.4 1993/08/01 18:07:25 mycroft Exp $"; 37 #endif /* not lint */ 38 39 #if defined(unix) 40 #include <sys/param.h> 41 #ifdef CRAY 42 #include <sys/types.h> 43 #endif 44 #include <sys/file.h> 45 #else 46 #include <sys/types.h> 47 #endif /* defined(unix) */ 48 #include <sys/socket.h> 49 #include <netinet/in.h> 50 #ifdef CRAY 51 #include <fcntl.h> 52 #endif /* CRAY */ 53 54 #include <signal.h> 55 #include <netdb.h> 56 #include <ctype.h> 57 #include <pwd.h> 58 #include <varargs.h> 59 #include <errno.h> 60 61 #include <arpa/inet.h> 62 #include <arpa/telnet.h> 63 64 #include "general.h" 65 66 #include "ring.h" 67 68 #include "externs.h" 69 #include "defines.h" 70 #include "types.h" 71 72 #ifndef CRAY 73 #include <netinet/in_systm.h> 74 # if (defined(vax) || defined(tahoe) || defined(hp300)) && !defined(ultrix) 75 # include <machine/endian.h> 76 # endif /* vax */ 77 #endif /* CRAY */ 78 #include <netinet/ip.h> 79 80 81 #ifndef MAXHOSTNAMELEN 82 #define MAXHOSTNAMELEN 64 83 #endif MAXHOSTNAMELEN 84 85 #if defined(IPPROTO_IP) && defined(IP_TOS) 86 int tos = -1; 87 #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 88 89 char *hostname; 90 static char _hostname[MAXHOSTNAMELEN]; 91 92 extern char *getenv(); 93 94 extern int isprefix(); 95 extern char **genget(); 96 extern int Ambiguous(); 97 98 static call(); 99 100 typedef struct { 101 char *name; /* command name */ 102 char *help; /* help string (NULL for no help) */ 103 int (*handler)(); /* routine which executes command */ 104 int needconnect; /* Do we need to be connected to execute? */ 105 } Command; 106 107 static char line[256]; 108 static char saveline[256]; 109 static int margc; 110 static char *margv[20]; 111 112 static void 113 makeargv() 114 { 115 register char *cp, *cp2, c; 116 register char **argp = margv; 117 118 margc = 0; 119 cp = line; 120 if (*cp == '!') { /* Special case shell escape */ 121 strcpy(saveline, line); /* save for shell command */ 122 *argp++ = "!"; /* No room in string to get this */ 123 margc++; 124 cp++; 125 } 126 while (c = *cp) { 127 register int inquote = 0; 128 while (isspace(c)) 129 c = *++cp; 130 if (c == '\0') 131 break; 132 *argp++ = cp; 133 margc += 1; 134 for (cp2 = cp; c != '\0'; c = *++cp) { 135 if (inquote) { 136 if (c == inquote) { 137 inquote = 0; 138 continue; 139 } 140 } else { 141 if (c == '\\') { 142 if ((c = *++cp) == '\0') 143 break; 144 } else if (c == '"') { 145 inquote = '"'; 146 continue; 147 } else if (c == '\'') { 148 inquote = '\''; 149 continue; 150 } else if (isspace(c)) 151 break; 152 } 153 *cp2++ = c; 154 } 155 *cp2 = '\0'; 156 if (c == '\0') 157 break; 158 cp++; 159 } 160 *argp++ = 0; 161 } 162 163 /* 164 * Make a character string into a number. 165 * 166 * Todo: 1. Could take random integers (12, 0x12, 012, 0b1). 167 */ 168 169 static 170 special(s) 171 register char *s; 172 { 173 register char c; 174 char b; 175 176 switch (*s) { 177 case '^': 178 b = *++s; 179 if (b == '?') { 180 c = b | 0x40; /* DEL */ 181 } else { 182 c = b & 0x1f; 183 } 184 break; 185 default: 186 c = *s; 187 break; 188 } 189 return c; 190 } 191 192 /* 193 * Construct a control character sequence 194 * for a special character. 195 */ 196 static char * 197 control(c) 198 register cc_t c; 199 { 200 static char buf[5]; 201 /* 202 * The only way I could get the Sun 3.5 compiler 203 * to shut up about 204 * if ((unsigned int)c >= 0x80) 205 * was to assign "c" to an unsigned int variable... 206 * Arggg.... 207 */ 208 register unsigned int uic = (unsigned int)c; 209 210 if (uic == 0x7f) 211 return ("^?"); 212 if (c == (cc_t)_POSIX_VDISABLE) { 213 return "off"; 214 } 215 if (uic >= 0x80) { 216 buf[0] = '\\'; 217 buf[1] = ((c>>6)&07) + '0'; 218 buf[2] = ((c>>3)&07) + '0'; 219 buf[3] = (c&07) + '0'; 220 buf[4] = 0; 221 } else if (uic >= 0x20) { 222 buf[0] = c; 223 buf[1] = 0; 224 } else { 225 buf[0] = '^'; 226 buf[1] = '@'+c; 227 buf[2] = 0; 228 } 229 return (buf); 230 } 231 232 233 234 /* 235 * The following are data structures and routines for 236 * the "send" command. 237 * 238 */ 239 240 struct sendlist { 241 char *name; /* How user refers to it (case independent) */ 242 char *help; /* Help information (0 ==> no help) */ 243 int needconnect; /* Need to be connected */ 244 int narg; /* Number of arguments */ 245 int (*handler)(); /* Routine to perform (for special ops) */ 246 int nbyte; /* Number of bytes to send this command */ 247 int what; /* Character to be sent (<0 ==> special) */ 248 }; 249 250 251 static int 252 send_esc P((void)), 253 send_help P((void)), 254 send_docmd P((char *)), 255 send_dontcmd P((char *)), 256 send_willcmd P((char *)), 257 send_wontcmd P((char *)); 258 259 extern int 260 send_do P((int, int)), 261 send_dont P((int, int)), 262 send_will P((int, int)), 263 send_wont P((int, int)); 264 265 static struct sendlist Sendlist[] = { 266 { "ao", "Send Telnet Abort output", 1, 0, 0, 2, AO }, 267 { "ayt", "Send Telnet 'Are You There'", 1, 0, 0, 2, AYT }, 268 { "brk", "Send Telnet Break", 1, 0, 0, 2, BREAK }, 269 { "break", 0, 1, 0, 0, 2, BREAK }, 270 { "ec", "Send Telnet Erase Character", 1, 0, 0, 2, EC }, 271 { "el", "Send Telnet Erase Line", 1, 0, 0, 2, EL }, 272 { "escape", "Send current escape character", 1, 0, send_esc, 1, 0 }, 273 { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, 0, 2, GA }, 274 { "ip", "Send Telnet Interrupt Process", 1, 0, 0, 2, IP }, 275 { "intp", 0, 1, 0, 0, 2, IP }, 276 { "interrupt", 0, 1, 0, 0, 2, IP }, 277 { "intr", 0, 1, 0, 0, 2, IP }, 278 { "nop", "Send Telnet 'No operation'", 1, 0, 0, 2, NOP }, 279 { "eor", "Send Telnet 'End of Record'", 1, 0, 0, 2, EOR }, 280 { "abort", "Send Telnet 'Abort Process'", 1, 0, 0, 2, ABORT }, 281 { "susp", "Send Telnet 'Suspend Process'", 1, 0, 0, 2, SUSP }, 282 { "eof", "Send Telnet End of File Character", 1, 0, 0, 2, xEOF }, 283 { "synch", "Perform Telnet 'Synch operation'", 1, 0, dosynch, 2, 0 }, 284 { "getstatus", "Send request for STATUS", 1, 0, get_status, 6, 0 }, 285 { "?", "Display send options", 0, 0, send_help, 0, 0 }, 286 { "help", 0, 0, 0, send_help, 0, 0 }, 287 { "do", 0, 0, 1, send_docmd, 3, 0 }, 288 { "dont", 0, 0, 1, send_dontcmd, 3, 0 }, 289 { "will", 0, 0, 1, send_willcmd, 3, 0 }, 290 { "wont", 0, 0, 1, send_wontcmd, 3, 0 }, 291 { 0 } 292 }; 293 294 #define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \ 295 sizeof(struct sendlist))) 296 297 static int 298 sendcmd(argc, argv) 299 int argc; 300 char **argv; 301 { 302 int count; /* how many bytes we are going to need to send */ 303 int i; 304 int question = 0; /* was at least one argument a question */ 305 struct sendlist *s; /* pointer to current command */ 306 int success = 0; 307 int needconnect = 0; 308 309 if (argc < 2) { 310 printf("need at least one argument for 'send' command\n"); 311 printf("'send ?' for help\n"); 312 return 0; 313 } 314 /* 315 * First, validate all the send arguments. 316 * In addition, we see how much space we are going to need, and 317 * whether or not we will be doing a "SYNCH" operation (which 318 * flushes the network queue). 319 */ 320 count = 0; 321 for (i = 1; i < argc; i++) { 322 s = GETSEND(argv[i]); 323 if (s == 0) { 324 printf("Unknown send argument '%s'\n'send ?' for help.\n", 325 argv[i]); 326 return 0; 327 } else if (Ambiguous(s)) { 328 printf("Ambiguous send argument '%s'\n'send ?' for help.\n", 329 argv[i]); 330 return 0; 331 } 332 if (i + s->narg >= argc) { 333 fprintf(stderr, 334 "Need %d argument%s to 'send %s' command. 'send %s ?' for help.\n", 335 s->narg, s->narg == 1 ? "" : "s", s->name, s->name); 336 return 0; 337 } 338 count += s->nbyte; 339 if (s->handler == send_help) { 340 send_help(); 341 return 0; 342 } 343 344 i += s->narg; 345 needconnect += s->needconnect; 346 } 347 if (!connected && needconnect) { 348 printf("?Need to be connected first.\n"); 349 printf("'send ?' for help\n"); 350 return 0; 351 } 352 /* Now, do we have enough room? */ 353 if (NETROOM() < count) { 354 printf("There is not enough room in the buffer TO the network\n"); 355 printf("to process your request. Nothing will be done.\n"); 356 printf("('send synch' will throw away most data in the network\n"); 357 printf("buffer, if this might help.)\n"); 358 return 0; 359 } 360 /* OK, they are all OK, now go through again and actually send */ 361 count = 0; 362 for (i = 1; i < argc; i++) { 363 if ((s = GETSEND(argv[i])) == 0) { 364 fprintf(stderr, "Telnet 'send' error - argument disappeared!\n"); 365 (void) quit(); 366 /*NOTREACHED*/ 367 } 368 if (s->handler) { 369 count++; 370 success += (*s->handler)((s->narg > 0) ? argv[i+1] : 0, 371 (s->narg > 1) ? argv[i+2] : 0); 372 i += s->narg; 373 } else { 374 NET2ADD(IAC, s->what); 375 printoption("SENT", IAC, s->what); 376 } 377 } 378 return (count == success); 379 } 380 381 static int 382 send_esc() 383 { 384 NETADD(escape); 385 return 1; 386 } 387 388 static int 389 send_docmd(name) 390 char *name; 391 { 392 return(send_tncmd(send_do, "do", name)); 393 } 394 395 static int 396 send_dontcmd(name) 397 char *name; 398 { 399 return(send_tncmd(send_dont, "dont", name)); 400 } 401 static int 402 send_willcmd(name) 403 char *name; 404 { 405 return(send_tncmd(send_will, "will", name)); 406 } 407 static int 408 send_wontcmd(name) 409 char *name; 410 { 411 return(send_tncmd(send_wont, "wont", name)); 412 } 413 414 int 415 send_tncmd(func, cmd, name) 416 void (*func)(); 417 char *cmd, *name; 418 { 419 char **cpp; 420 extern char *telopts[]; 421 422 if (isprefix(name, "help") || isprefix(name, "?")) { 423 register int col, len; 424 425 printf("Usage: send %s <option>\n", cmd); 426 printf("Valid options are:\n\t"); 427 428 col = 8; 429 for (cpp = telopts; *cpp; cpp++) { 430 len = strlen(*cpp) + 1; 431 if (col + len > 65) { 432 printf("\n\t"); 433 col = 8; 434 } 435 printf(" %s", *cpp); 436 col += len; 437 } 438 printf("\n"); 439 return 0; 440 } 441 cpp = (char **)genget(name, telopts, sizeof(char *)); 442 if (Ambiguous(cpp)) { 443 fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).\n", 444 name, cmd); 445 return 0; 446 } 447 if (cpp == 0) { 448 fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).\n", 449 name, cmd); 450 return 0; 451 } 452 if (!connected) { 453 printf("?Need to be connected first.\n"); 454 return 0; 455 } 456 (*func)(cpp - telopts, 1); 457 return 1; 458 } 459 460 static int 461 send_help() 462 { 463 struct sendlist *s; /* pointer to current command */ 464 for (s = Sendlist; s->name; s++) { 465 if (s->help) 466 printf("%-15s %s\n", s->name, s->help); 467 } 468 return(0); 469 } 470 471 /* 472 * The following are the routines and data structures referred 473 * to by the arguments to the "toggle" command. 474 */ 475 476 static int 477 lclchars() 478 { 479 donelclchars = 1; 480 return 1; 481 } 482 483 static int 484 togdebug() 485 { 486 #ifndef NOT43 487 if (net > 0 && 488 (SetSockOpt(net, SOL_SOCKET, SO_DEBUG, debug)) < 0) { 489 perror("setsockopt (SO_DEBUG)"); 490 } 491 #else /* NOT43 */ 492 if (debug) { 493 if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 0, 0) < 0) 494 perror("setsockopt (SO_DEBUG)"); 495 } else 496 printf("Cannot turn off socket debugging\n"); 497 #endif /* NOT43 */ 498 return 1; 499 } 500 501 502 static int 503 togcrlf() 504 { 505 if (crlf) { 506 printf("Will send carriage returns as telnet <CR><LF>.\n"); 507 } else { 508 printf("Will send carriage returns as telnet <CR><NUL>.\n"); 509 } 510 return 1; 511 } 512 513 int binmode; 514 515 static int 516 togbinary(val) 517 int val; 518 { 519 donebinarytoggle = 1; 520 521 if (val >= 0) { 522 binmode = val; 523 } else { 524 if (my_want_state_is_will(TELOPT_BINARY) && 525 my_want_state_is_do(TELOPT_BINARY)) { 526 binmode = 1; 527 } else if (my_want_state_is_wont(TELOPT_BINARY) && 528 my_want_state_is_dont(TELOPT_BINARY)) { 529 binmode = 0; 530 } 531 val = binmode ? 0 : 1; 532 } 533 534 if (val == 1) { 535 if (my_want_state_is_will(TELOPT_BINARY) && 536 my_want_state_is_do(TELOPT_BINARY)) { 537 printf("Already operating in binary mode with remote host.\n"); 538 } else { 539 printf("Negotiating binary mode with remote host.\n"); 540 tel_enter_binary(3); 541 } 542 } else { 543 if (my_want_state_is_wont(TELOPT_BINARY) && 544 my_want_state_is_dont(TELOPT_BINARY)) { 545 printf("Already in network ascii mode with remote host.\n"); 546 } else { 547 printf("Negotiating network ascii mode with remote host.\n"); 548 tel_leave_binary(3); 549 } 550 } 551 return 1; 552 } 553 554 static int 555 togrbinary(val) 556 int val; 557 { 558 donebinarytoggle = 1; 559 560 if (val == -1) 561 val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1; 562 563 if (val == 1) { 564 if (my_want_state_is_do(TELOPT_BINARY)) { 565 printf("Already receiving in binary mode.\n"); 566 } else { 567 printf("Negotiating binary mode on input.\n"); 568 tel_enter_binary(1); 569 } 570 } else { 571 if (my_want_state_is_dont(TELOPT_BINARY)) { 572 printf("Already receiving in network ascii mode.\n"); 573 } else { 574 printf("Negotiating network ascii mode on input.\n"); 575 tel_leave_binary(1); 576 } 577 } 578 return 1; 579 } 580 581 static int 582 togxbinary(val) 583 int val; 584 { 585 donebinarytoggle = 1; 586 587 if (val == -1) 588 val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1; 589 590 if (val == 1) { 591 if (my_want_state_is_will(TELOPT_BINARY)) { 592 printf("Already transmitting in binary mode.\n"); 593 } else { 594 printf("Negotiating binary mode on output.\n"); 595 tel_enter_binary(2); 596 } 597 } else { 598 if (my_want_state_is_wont(TELOPT_BINARY)) { 599 printf("Already transmitting in network ascii mode.\n"); 600 } else { 601 printf("Negotiating network ascii mode on output.\n"); 602 tel_leave_binary(2); 603 } 604 } 605 return 1; 606 } 607 608 609 static int togglehelp P((void)); 610 #if defined(AUTHENTICATE) 611 extern int auth_togdebug P((int)); 612 #endif 613 #if defined(ENCRYPT) 614 extern int EncryptAutoEnc P((int)); 615 extern int EncryptAutoDec P((int)); 616 extern int EncryptDebug P((int)); 617 extern int EncryptVerbose P((int)); 618 #endif 619 620 struct togglelist { 621 char *name; /* name of toggle */ 622 char *help; /* help message */ 623 int (*handler)(); /* routine to do actual setting */ 624 int *variable; 625 char *actionexplanation; 626 }; 627 628 static struct togglelist Togglelist[] = { 629 { "autoflush", 630 "flushing of output when sending interrupt characters", 631 0, 632 &autoflush, 633 "flush output when sending interrupt characters" }, 634 { "autosynch", 635 "automatic sending of interrupt characters in urgent mode", 636 0, 637 &autosynch, 638 "send interrupt characters in urgent mode" }, 639 #if defined(AUTHENTICATE) 640 { "autologin", 641 "automatic sending of login and/or authentication info", 642 0, 643 &autologin, 644 "send login name and/or authentication information" }, 645 { "authdebug", 646 "Toggle authentication debugging", 647 auth_togdebug, 648 0, 649 "print authentication debugging information" }, 650 #endif 651 #if defined(ENCRYPT) 652 { "autoencrypt", 653 "automatic encryption of data stream", 654 EncryptAutoEnc, 655 0, 656 "automatically encrypt output" }, 657 { "autodecrypt", 658 "automatic decryption of data stream", 659 EncryptAutoDec, 660 0, 661 "automatically decrypt input" }, 662 { "verbose_encrypt", 663 "Toggle verbose encryption output", 664 EncryptVerbose, 665 0, 666 "print verbose encryption output" }, 667 { "encdebug", 668 "Toggle encryption debugging", 669 EncryptDebug, 670 0, 671 "print encryption debugging information" }, 672 #endif 673 { "skiprc", 674 "don't read ~/.telnetrc file", 675 0, 676 &skiprc, 677 "read ~/.telnetrc file" }, 678 { "binary", 679 "sending and receiving of binary data", 680 togbinary, 681 0, 682 0 }, 683 { "inbinary", 684 "receiving of binary data", 685 togrbinary, 686 0, 687 0 }, 688 { "outbinary", 689 "sending of binary data", 690 togxbinary, 691 0, 692 0 }, 693 { "crlf", 694 "sending carriage returns as telnet <CR><LF>", 695 togcrlf, 696 &crlf, 697 0 }, 698 { "crmod", 699 "mapping of received carriage returns", 700 0, 701 &crmod, 702 "map carriage return on output" }, 703 { "localchars", 704 "local recognition of certain control characters", 705 lclchars, 706 &localchars, 707 "recognize certain control characters" }, 708 { " ", "", 0 }, /* empty line */ 709 #if defined(unix) && defined(TN3270) 710 { "apitrace", 711 "(debugging) toggle tracing of API transactions", 712 0, 713 &apitrace, 714 "trace API transactions" }, 715 { "cursesdata", 716 "(debugging) toggle printing of hexadecimal curses data", 717 0, 718 &cursesdata, 719 "print hexadecimal representation of curses data" }, 720 #endif /* defined(unix) && defined(TN3270) */ 721 { "debug", 722 "debugging", 723 togdebug, 724 &debug, 725 "turn on socket level debugging" }, 726 { "netdata", 727 "printing of hexadecimal network data (debugging)", 728 0, 729 &netdata, 730 "print hexadecimal representation of network traffic" }, 731 { "prettydump", 732 "output of \"netdata\" to user readable format (debugging)", 733 0, 734 &prettydump, 735 "print user readable output for \"netdata\"" }, 736 { "options", 737 "viewing of options processing (debugging)", 738 0, 739 &showoptions, 740 "show option processing" }, 741 #if defined(unix) 742 { "termdata", 743 "(debugging) toggle printing of hexadecimal terminal data", 744 0, 745 &termdata, 746 "print hexadecimal representation of terminal traffic" }, 747 #endif /* defined(unix) */ 748 { "?", 749 0, 750 togglehelp }, 751 { "help", 752 0, 753 togglehelp }, 754 { 0 } 755 }; 756 757 static int 758 togglehelp() 759 { 760 struct togglelist *c; 761 762 for (c = Togglelist; c->name; c++) { 763 if (c->help) { 764 if (*c->help) 765 printf("%-15s toggle %s\n", c->name, c->help); 766 else 767 printf("\n"); 768 } 769 } 770 printf("\n"); 771 printf("%-15s %s\n", "?", "display help information"); 772 return 0; 773 } 774 775 static void 776 settogglehelp(set) 777 int set; 778 { 779 struct togglelist *c; 780 781 for (c = Togglelist; c->name; c++) { 782 if (c->help) { 783 if (*c->help) 784 printf("%-15s %s %s\n", c->name, set ? "enable" : "disable", 785 c->help); 786 else 787 printf("\n"); 788 } 789 } 790 } 791 792 #define GETTOGGLE(name) (struct togglelist *) \ 793 genget(name, (char **) Togglelist, sizeof(struct togglelist)) 794 795 static int 796 toggle(argc, argv) 797 int argc; 798 char *argv[]; 799 { 800 int retval = 1; 801 char *name; 802 struct togglelist *c; 803 804 if (argc < 2) { 805 fprintf(stderr, 806 "Need an argument to 'toggle' command. 'toggle ?' for help.\n"); 807 return 0; 808 } 809 argc--; 810 argv++; 811 while (argc--) { 812 name = *argv++; 813 c = GETTOGGLE(name); 814 if (Ambiguous(c)) { 815 fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\n", 816 name); 817 return 0; 818 } else if (c == 0) { 819 fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\n", 820 name); 821 return 0; 822 } else { 823 if (c->variable) { 824 *c->variable = !*c->variable; /* invert it */ 825 if (c->actionexplanation) { 826 printf("%s %s.\n", *c->variable? "Will" : "Won't", 827 c->actionexplanation); 828 } 829 } 830 if (c->handler) { 831 retval &= (*c->handler)(-1); 832 } 833 } 834 } 835 return retval; 836 } 837 838 /* 839 * The following perform the "set" command. 840 */ 841 842 #ifdef USE_TERMIO 843 struct termio new_tc = { 0 }; 844 #endif 845 846 struct setlist { 847 char *name; /* name */ 848 char *help; /* help information */ 849 void (*handler)(); 850 cc_t *charp; /* where it is located at */ 851 }; 852 853 static struct setlist Setlist[] = { 854 #ifdef KLUDGELINEMODE 855 { "echo", "character to toggle local echoing on/off", 0, &echoc }, 856 #endif 857 { "escape", "character to escape back to telnet command mode", 0, &escape }, 858 { "rlogin", "rlogin escape character", 0, &rlogin }, 859 { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile}, 860 { " ", "" }, 861 { " ", "The following need 'localchars' to be toggled true", 0, 0 }, 862 { "flushoutput", "character to cause an Abort Output", 0, termFlushCharp }, 863 { "interrupt", "character to cause an Interrupt Process", 0, termIntCharp }, 864 { "quit", "character to cause an Abort process", 0, termQuitCharp }, 865 { "eof", "character to cause an EOF ", 0, termEofCharp }, 866 { " ", "" }, 867 { " ", "The following are for local editing in linemode", 0, 0 }, 868 { "erase", "character to use to erase a character", 0, termEraseCharp }, 869 { "kill", "character to use to erase a line", 0, termKillCharp }, 870 { "lnext", "character to use for literal next", 0, termLiteralNextCharp }, 871 { "susp", "character to cause a Suspend Process", 0, termSuspCharp }, 872 { "reprint", "character to use for line reprint", 0, termRprntCharp }, 873 { "worderase", "character to use to erase a word", 0, termWerasCharp }, 874 { "start", "character to use for XON", 0, termStartCharp }, 875 { "stop", "character to use for XOFF", 0, termStopCharp }, 876 { "forw1", "alternate end of line character", 0, termForw1Charp }, 877 { "forw2", "alternate end of line character", 0, termForw2Charp }, 878 { "ayt", "alternate AYT character", 0, termAytCharp }, 879 { 0 } 880 }; 881 882 #if defined(CRAY) && !defined(__STDC__) 883 /* Work around compiler bug in pcc 4.1.5 */ 884 void 885 _setlist_init() 886 { 887 #ifndef KLUDGELINEMODE 888 #define N 5 889 #else 890 #define N 6 891 #endif 892 Setlist[N+0].charp = &termFlushChar; 893 Setlist[N+1].charp = &termIntChar; 894 Setlist[N+2].charp = &termQuitChar; 895 Setlist[N+3].charp = &termEofChar; 896 Setlist[N+6].charp = &termEraseChar; 897 Setlist[N+7].charp = &termKillChar; 898 Setlist[N+8].charp = &termLiteralNextChar; 899 Setlist[N+9].charp = &termSuspChar; 900 Setlist[N+10].charp = &termRprntChar; 901 Setlist[N+11].charp = &termWerasChar; 902 Setlist[N+12].charp = &termStartChar; 903 Setlist[N+13].charp = &termStopChar; 904 Setlist[N+14].charp = &termForw1Char; 905 Setlist[N+15].charp = &termForw2Char; 906 Setlist[N+16].charp = &termAytChar; 907 #undef N 908 } 909 #endif /* defined(CRAY) && !defined(__STDC__) */ 910 911 static struct setlist * 912 getset(name) 913 char *name; 914 { 915 return (struct setlist *) 916 genget(name, (char **) Setlist, sizeof(struct setlist)); 917 } 918 919 void 920 set_escape_char(s) 921 char *s; 922 { 923 if (rlogin != _POSIX_VDISABLE) { 924 rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE; 925 printf("Telnet rlogin escape character is '%s'.\n", 926 control(rlogin)); 927 } else { 928 escape = (s && *s) ? special(s) : _POSIX_VDISABLE; 929 printf("Telnet escape character is '%s'.\n", control(escape)); 930 } 931 } 932 933 static int 934 setcmd(argc, argv) 935 int argc; 936 char *argv[]; 937 { 938 int value; 939 struct setlist *ct; 940 struct togglelist *c; 941 942 if (argc < 2 || argc > 3) { 943 printf("Format is 'set Name Value'\n'set ?' for help.\n"); 944 return 0; 945 } 946 if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) { 947 for (ct = Setlist; ct->name; ct++) 948 printf("%-15s %s\n", ct->name, ct->help); 949 printf("\n"); 950 settogglehelp(1); 951 printf("%-15s %s\n", "?", "display help information"); 952 return 0; 953 } 954 955 ct = getset(argv[1]); 956 if (ct == 0) { 957 c = GETTOGGLE(argv[1]); 958 if (c == 0) { 959 fprintf(stderr, "'%s': unknown argument ('set ?' for help).\n", 960 argv[1]); 961 return 0; 962 } else if (Ambiguous(c)) { 963 fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n", 964 argv[1]); 965 return 0; 966 } 967 if (c->variable) { 968 if ((argc == 2) || (strcmp("on", argv[2]) == 0)) 969 *c->variable = 1; 970 else if (strcmp("off", argv[2]) == 0) 971 *c->variable = 0; 972 else { 973 printf("Format is 'set togglename [on|off]'\n'set ?' for help.\n"); 974 return 0; 975 } 976 if (c->actionexplanation) { 977 printf("%s %s.\n", *c->variable? "Will" : "Won't", 978 c->actionexplanation); 979 } 980 } 981 if (c->handler) 982 (*c->handler)(1); 983 } else if (argc != 3) { 984 printf("Format is 'set Name Value'\n'set ?' for help.\n"); 985 return 0; 986 } else if (Ambiguous(ct)) { 987 fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n", 988 argv[1]); 989 return 0; 990 } else if (ct->handler) { 991 (*ct->handler)(argv[2]); 992 printf("%s set to \"%s\".\n", ct->name, (char *)ct->charp); 993 } else { 994 if (strcmp("off", argv[2])) { 995 value = special(argv[2]); 996 } else { 997 value = _POSIX_VDISABLE; 998 } 999 *(ct->charp) = (cc_t)value; 1000 printf("%s character is '%s'.\n", ct->name, control(*(ct->charp))); 1001 } 1002 slc_check(); 1003 return 1; 1004 } 1005 1006 static int 1007 unsetcmd(argc, argv) 1008 int argc; 1009 char *argv[]; 1010 { 1011 struct setlist *ct; 1012 struct togglelist *c; 1013 register char *name; 1014 1015 if (argc < 2) { 1016 fprintf(stderr, 1017 "Need an argument to 'unset' command. 'unset ?' for help.\n"); 1018 return 0; 1019 } 1020 if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) { 1021 for (ct = Setlist; ct->name; ct++) 1022 printf("%-15s %s\n", ct->name, ct->help); 1023 printf("\n"); 1024 settogglehelp(0); 1025 printf("%-15s %s\n", "?", "display help information"); 1026 return 0; 1027 } 1028 1029 argc--; 1030 argv++; 1031 while (argc--) { 1032 name = *argv++; 1033 ct = getset(name); 1034 if (ct == 0) { 1035 c = GETTOGGLE(name); 1036 if (c == 0) { 1037 fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\n", 1038 name); 1039 return 0; 1040 } else if (Ambiguous(c)) { 1041 fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n", 1042 name); 1043 return 0; 1044 } 1045 if (c->variable) { 1046 *c->variable = 0; 1047 if (c->actionexplanation) { 1048 printf("%s %s.\n", *c->variable? "Will" : "Won't", 1049 c->actionexplanation); 1050 } 1051 } 1052 if (c->handler) 1053 (*c->handler)(0); 1054 } else if (Ambiguous(ct)) { 1055 fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n", 1056 name); 1057 return 0; 1058 } else if (ct->handler) { 1059 (*ct->handler)(0); 1060 printf("%s reset to \"%s\".\n", ct->name, (char *)ct->charp); 1061 } else { 1062 *(ct->charp) = _POSIX_VDISABLE; 1063 printf("%s character is '%s'.\n", ct->name, control(*(ct->charp))); 1064 } 1065 } 1066 return 1; 1067 } 1068 1069 /* 1070 * The following are the data structures and routines for the 1071 * 'mode' command. 1072 */ 1073 #ifdef KLUDGELINEMODE 1074 extern int kludgelinemode; 1075 1076 static int 1077 dokludgemode() 1078 { 1079 kludgelinemode = 1; 1080 send_wont(TELOPT_LINEMODE, 1); 1081 send_dont(TELOPT_SGA, 1); 1082 send_dont(TELOPT_ECHO, 1); 1083 } 1084 #endif 1085 1086 static int 1087 dolinemode() 1088 { 1089 #ifdef KLUDGELINEMODE 1090 if (kludgelinemode) 1091 send_dont(TELOPT_SGA, 1); 1092 #endif 1093 send_will(TELOPT_LINEMODE, 1); 1094 send_dont(TELOPT_ECHO, 1); 1095 return 1; 1096 } 1097 1098 static int 1099 docharmode() 1100 { 1101 #ifdef KLUDGELINEMODE 1102 if (kludgelinemode) 1103 send_do(TELOPT_SGA, 1); 1104 else 1105 #endif 1106 send_wont(TELOPT_LINEMODE, 1); 1107 send_do(TELOPT_ECHO, 1); 1108 return 1; 1109 } 1110 1111 static int 1112 dolmmode(bit, on) 1113 int bit, on; 1114 { 1115 unsigned char c; 1116 extern int linemode; 1117 1118 if (my_want_state_is_wont(TELOPT_LINEMODE)) { 1119 printf("?Need to have LINEMODE option enabled first.\n"); 1120 printf("'mode ?' for help.\n"); 1121 return 0; 1122 } 1123 1124 if (on) 1125 c = (linemode | bit); 1126 else 1127 c = (linemode & ~bit); 1128 lm_mode(&c, 1, 1); 1129 return 1; 1130 } 1131 1132 int 1133 setmode(bit) 1134 { 1135 return dolmmode(bit, 1); 1136 } 1137 1138 int 1139 clearmode(bit) 1140 { 1141 return dolmmode(bit, 0); 1142 } 1143 1144 struct modelist { 1145 char *name; /* command name */ 1146 char *help; /* help string */ 1147 int (*handler)(); /* routine which executes command */ 1148 int needconnect; /* Do we need to be connected to execute? */ 1149 int arg1; 1150 }; 1151 1152 extern int modehelp(); 1153 1154 static struct modelist ModeList[] = { 1155 { "character", "Disable LINEMODE option", docharmode, 1 }, 1156 #ifdef KLUDGELINEMODE 1157 { "", "(or disable obsolete line-by-line mode)", 0 }, 1158 #endif 1159 { "line", "Enable LINEMODE option", dolinemode, 1 }, 1160 #ifdef KLUDGELINEMODE 1161 { "", "(or enable obsolete line-by-line mode)", 0 }, 1162 #endif 1163 { "", "", 0 }, 1164 { "", "These require the LINEMODE option to be enabled", 0 }, 1165 { "isig", "Enable signal trapping", setmode, 1, MODE_TRAPSIG }, 1166 { "+isig", 0, setmode, 1, MODE_TRAPSIG }, 1167 { "-isig", "Disable signal trapping", clearmode, 1, MODE_TRAPSIG }, 1168 { "edit", "Enable character editing", setmode, 1, MODE_EDIT }, 1169 { "+edit", 0, setmode, 1, MODE_EDIT }, 1170 { "-edit", "Disable character editing", clearmode, 1, MODE_EDIT }, 1171 { "softtabs", "Enable tab expansion", setmode, 1, MODE_SOFT_TAB }, 1172 { "+softtabs", 0, setmode, 1, MODE_SOFT_TAB }, 1173 { "-softtabs", "Disable character editing", clearmode, 1, MODE_SOFT_TAB }, 1174 { "litecho", "Enable literal character echo", setmode, 1, MODE_LIT_ECHO }, 1175 { "+litecho", 0, setmode, 1, MODE_LIT_ECHO }, 1176 { "-litecho", "Disable literal character echo", clearmode, 1, MODE_LIT_ECHO }, 1177 { "help", 0, modehelp, 0 }, 1178 #ifdef KLUDGELINEMODE 1179 { "kludgeline", 0, dokludgemode, 1 }, 1180 #endif 1181 { "", "", 0 }, 1182 { "?", "Print help information", modehelp, 0 }, 1183 { 0 }, 1184 }; 1185 1186 1187 int 1188 modehelp() 1189 { 1190 struct modelist *mt; 1191 1192 printf("format is: 'mode Mode', where 'Mode' is one of:\n\n"); 1193 for (mt = ModeList; mt->name; mt++) { 1194 if (mt->help) { 1195 if (*mt->help) 1196 printf("%-15s %s\n", mt->name, mt->help); 1197 else 1198 printf("\n"); 1199 } 1200 } 1201 return 0; 1202 } 1203 1204 #define GETMODECMD(name) (struct modelist *) \ 1205 genget(name, (char **) ModeList, sizeof(struct modelist)) 1206 1207 static int 1208 modecmd(argc, argv) 1209 int argc; 1210 char *argv[]; 1211 { 1212 struct modelist *mt; 1213 1214 if (argc != 2) { 1215 printf("'mode' command requires an argument\n"); 1216 printf("'mode ?' for help.\n"); 1217 } else if ((mt = GETMODECMD(argv[1])) == 0) { 1218 fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\n", argv[1]); 1219 } else if (Ambiguous(mt)) { 1220 fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\n", argv[1]); 1221 } else if (mt->needconnect && !connected) { 1222 printf("?Need to be connected first.\n"); 1223 printf("'mode ?' for help.\n"); 1224 } else if (mt->handler) { 1225 return (*mt->handler)(mt->arg1); 1226 } 1227 return 0; 1228 } 1229 1230 /* 1231 * The following data structures and routines implement the 1232 * "display" command. 1233 */ 1234 1235 static int 1236 display(argc, argv) 1237 int argc; 1238 char *argv[]; 1239 { 1240 struct togglelist *tl; 1241 struct setlist *sl; 1242 1243 #define dotog(tl) if (tl->variable && tl->actionexplanation) { \ 1244 if (*tl->variable) { \ 1245 printf("will"); \ 1246 } else { \ 1247 printf("won't"); \ 1248 } \ 1249 printf(" %s.\n", tl->actionexplanation); \ 1250 } 1251 1252 #define doset(sl) if (sl->name && *sl->name != ' ') { \ 1253 if (sl->handler == 0) \ 1254 printf("%-15s [%s]\n", sl->name, control(*sl->charp)); \ 1255 else \ 1256 printf("%-15s \"%s\"\n", sl->name, (char *)sl->charp); \ 1257 } 1258 1259 if (argc == 1) { 1260 for (tl = Togglelist; tl->name; tl++) { 1261 dotog(tl); 1262 } 1263 printf("\n"); 1264 for (sl = Setlist; sl->name; sl++) { 1265 doset(sl); 1266 } 1267 } else { 1268 int i; 1269 1270 for (i = 1; i < argc; i++) { 1271 sl = getset(argv[i]); 1272 tl = GETTOGGLE(argv[i]); 1273 if (Ambiguous(sl) || Ambiguous(tl)) { 1274 printf("?Ambiguous argument '%s'.\n", argv[i]); 1275 return 0; 1276 } else if (!sl && !tl) { 1277 printf("?Unknown argument '%s'.\n", argv[i]); 1278 return 0; 1279 } else { 1280 if (tl) { 1281 dotog(tl); 1282 } 1283 if (sl) { 1284 doset(sl); 1285 } 1286 } 1287 } 1288 } 1289 /*@*/optionstatus(); 1290 #if defined(ENCRYPT) 1291 EncryptStatus(); 1292 #endif 1293 return 1; 1294 #undef doset 1295 #undef dotog 1296 } 1297 1298 /* 1299 * The following are the data structures, and many of the routines, 1300 * relating to command processing. 1301 */ 1302 1303 /* 1304 * Set the escape character. 1305 */ 1306 static int 1307 setescape(argc, argv) 1308 int argc; 1309 char *argv[]; 1310 { 1311 register char *arg; 1312 char buf[50]; 1313 1314 printf( 1315 "Deprecated usage - please use 'set escape%s%s' in the future.\n", 1316 (argc > 2)? " ":"", (argc > 2)? argv[1]: ""); 1317 if (argc > 2) 1318 arg = argv[1]; 1319 else { 1320 printf("new escape character: "); 1321 (void) fgets(buf, sizeof(buf), stdin); 1322 arg = buf; 1323 } 1324 if (arg[0] != '\0') 1325 escape = arg[0]; 1326 if (!In3270) { 1327 printf("Escape character is '%s'.\n", control(escape)); 1328 } 1329 (void) fflush(stdout); 1330 return 1; 1331 } 1332 1333 /*VARARGS*/ 1334 static int 1335 togcrmod() 1336 { 1337 crmod = !crmod; 1338 printf("Deprecated usage - please use 'toggle crmod' in the future.\n"); 1339 printf("%s map carriage return on output.\n", crmod ? "Will" : "Won't"); 1340 (void) fflush(stdout); 1341 return 1; 1342 } 1343 1344 /*VARARGS*/ 1345 int 1346 suspend() 1347 { 1348 #ifdef SIGTSTP 1349 setcommandmode(); 1350 { 1351 long oldrows, oldcols, newrows, newcols, err; 1352 1353 err = TerminalWindowSize(&oldrows, &oldcols); 1354 (void) kill(0, SIGTSTP); 1355 err += TerminalWindowSize(&newrows, &newcols); 1356 if (connected && !err && 1357 ((oldrows != newrows) || (oldcols != newcols))) { 1358 sendnaws(); 1359 } 1360 } 1361 /* reget parameters in case they were changed */ 1362 TerminalSaveState(); 1363 setconnmode(0); 1364 #else 1365 printf("Suspend is not supported. Try the '!' command instead\n"); 1366 #endif 1367 return 1; 1368 } 1369 1370 #if !defined(TN3270) 1371 /*ARGSUSED*/ 1372 int 1373 shell(argc, argv) 1374 int argc; 1375 char *argv[]; 1376 { 1377 setcommandmode(); 1378 switch(vfork()) { 1379 case -1: 1380 perror("Fork failed\n"); 1381 break; 1382 1383 case 0: 1384 { 1385 /* 1386 * Fire up the shell in the child. 1387 */ 1388 register char *shellp, *shellname; 1389 extern char *rindex(); 1390 1391 shellp = getenv("SHELL"); 1392 if (shellp == NULL) 1393 shellp = "/bin/sh"; 1394 if ((shellname = rindex(shellp, '/')) == 0) 1395 shellname = shellp; 1396 else 1397 shellname++; 1398 if (argc > 1) 1399 execl(shellp, shellname, "-c", &saveline[1], 0); 1400 else 1401 execl(shellp, shellname, 0); 1402 perror("Execl"); 1403 _exit(1); 1404 } 1405 default: 1406 (void)wait((int *)0); /* Wait for the shell to complete */ 1407 } 1408 return 1; 1409 } 1410 #endif /* !defined(TN3270) */ 1411 1412 /*VARARGS*/ 1413 static 1414 bye(argc, argv) 1415 int argc; /* Number of arguments */ 1416 char *argv[]; /* arguments */ 1417 { 1418 extern int resettermname; 1419 1420 if (connected) { 1421 (void) shutdown(net, 2); 1422 printf("Connection closed.\n"); 1423 (void) NetClose(net); 1424 connected = 0; 1425 resettermname = 1; 1426 #if defined(AUTHENTICATE) || defined(ENCRYPT) 1427 auth_encrypt_connect(connected); 1428 #endif 1429 /* reset options */ 1430 tninit(); 1431 #if defined(TN3270) 1432 SetIn3270(); /* Get out of 3270 mode */ 1433 #endif /* defined(TN3270) */ 1434 } 1435 if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) { 1436 longjmp(toplevel, 1); 1437 /* NOTREACHED */ 1438 } 1439 return 1; /* Keep lint, etc., happy */ 1440 } 1441 1442 /*VARARGS*/ 1443 quit() 1444 { 1445 (void) call(bye, "bye", "fromquit", 0); 1446 Exit(0); 1447 /*NOTREACHED*/ 1448 } 1449 1450 /*VARARGS*/ 1451 int 1452 logout() 1453 { 1454 send_do(TELOPT_LOGOUT, 1); 1455 (void) netflush(); 1456 return 1; 1457 } 1458 1459 1460 /* 1461 * The SLC command. 1462 */ 1463 1464 struct slclist { 1465 char *name; 1466 char *help; 1467 void (*handler)(); 1468 int arg; 1469 }; 1470 1471 static void slc_help(); 1472 1473 struct slclist SlcList[] = { 1474 { "export", "Use local special character definitions", 1475 slc_mode_export, 0 }, 1476 { "import", "Use remote special character definitions", 1477 slc_mode_import, 1 }, 1478 { "check", "Verify remote special character definitions", 1479 slc_mode_import, 0 }, 1480 { "help", 0, slc_help, 0 }, 1481 { "?", "Print help information", slc_help, 0 }, 1482 { 0 }, 1483 }; 1484 1485 static void 1486 slc_help() 1487 { 1488 struct slclist *c; 1489 1490 for (c = SlcList; c->name; c++) { 1491 if (c->help) { 1492 if (*c->help) 1493 printf("%-15s %s\n", c->name, c->help); 1494 else 1495 printf("\n"); 1496 } 1497 } 1498 } 1499 1500 static struct slclist * 1501 getslc(name) 1502 char *name; 1503 { 1504 return (struct slclist *) 1505 genget(name, (char **) SlcList, sizeof(struct slclist)); 1506 } 1507 1508 static 1509 slccmd(argc, argv) 1510 int argc; 1511 char *argv[]; 1512 { 1513 struct slclist *c; 1514 1515 if (argc != 2) { 1516 fprintf(stderr, 1517 "Need an argument to 'slc' command. 'slc ?' for help.\n"); 1518 return 0; 1519 } 1520 c = getslc(argv[1]); 1521 if (c == 0) { 1522 fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\n", 1523 argv[1]); 1524 return 0; 1525 } 1526 if (Ambiguous(c)) { 1527 fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\n", 1528 argv[1]); 1529 return 0; 1530 } 1531 (*c->handler)(c->arg); 1532 slcstate(); 1533 return 1; 1534 } 1535 1536 /* 1537 * The ENVIRON command. 1538 */ 1539 1540 struct envlist { 1541 char *name; 1542 char *help; 1543 void (*handler)(); 1544 int narg; 1545 }; 1546 1547 extern struct env_lst * 1548 env_define P((unsigned char *, unsigned char *)); 1549 extern void 1550 env_undefine P((unsigned char *)), 1551 env_export P((unsigned char *)), 1552 env_unexport P((unsigned char *)), 1553 env_send P((unsigned char *)), 1554 env_list P((void)); 1555 static void 1556 env_help P((void)); 1557 1558 struct envlist EnvList[] = { 1559 { "define", "Define an environment variable", 1560 (void (*)())env_define, 2 }, 1561 { "undefine", "Undefine an environment variable", 1562 env_undefine, 1 }, 1563 { "export", "Mark an environment variable for automatic export", 1564 env_export, 1 }, 1565 { "unexport", "Don't mark an environment variable for automatic export", 1566 env_unexport, 1 }, 1567 { "send", "Send an environment variable", env_send, 1 }, 1568 { "list", "List the current environment variables", 1569 env_list, 0 }, 1570 { "help", 0, env_help, 0 }, 1571 { "?", "Print help information", env_help, 0 }, 1572 { 0 }, 1573 }; 1574 1575 static void 1576 env_help() 1577 { 1578 struct envlist *c; 1579 1580 for (c = EnvList; c->name; c++) { 1581 if (c->help) { 1582 if (*c->help) 1583 printf("%-15s %s\n", c->name, c->help); 1584 else 1585 printf("\n"); 1586 } 1587 } 1588 } 1589 1590 static struct envlist * 1591 getenvcmd(name) 1592 char *name; 1593 { 1594 return (struct envlist *) 1595 genget(name, (char **) EnvList, sizeof(struct envlist)); 1596 } 1597 1598 env_cmd(argc, argv) 1599 int argc; 1600 char *argv[]; 1601 { 1602 struct envlist *c; 1603 1604 if (argc < 2) { 1605 fprintf(stderr, 1606 "Need an argument to 'environ' command. 'environ ?' for help.\n"); 1607 return 0; 1608 } 1609 c = getenvcmd(argv[1]); 1610 if (c == 0) { 1611 fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\n", 1612 argv[1]); 1613 return 0; 1614 } 1615 if (Ambiguous(c)) { 1616 fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\n", 1617 argv[1]); 1618 return 0; 1619 } 1620 if (c->narg + 2 != argc) { 1621 fprintf(stderr, 1622 "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\n", 1623 c->narg < argc + 2 ? "only " : "", 1624 c->narg, c->narg == 1 ? "" : "s", c->name); 1625 return 0; 1626 } 1627 (*c->handler)(argv[2], argv[3]); 1628 return 1; 1629 } 1630 1631 struct env_lst { 1632 struct env_lst *next; /* pointer to next structure */ 1633 struct env_lst *prev; /* pointer to next structure */ 1634 unsigned char *var; /* pointer to variable name */ 1635 unsigned char *value; /* pointer to varialbe value */ 1636 int export; /* 1 -> export with default list of variables */ 1637 }; 1638 1639 struct env_lst envlisthead; 1640 1641 struct env_lst * 1642 env_find(var) 1643 unsigned char *var; 1644 { 1645 register struct env_lst *ep; 1646 1647 for (ep = envlisthead.next; ep; ep = ep->next) { 1648 if (strcmp((char *)ep->var, (char *)var) == 0) 1649 return(ep); 1650 } 1651 return(NULL); 1652 } 1653 1654 void 1655 env_init() 1656 { 1657 extern char **environ; 1658 register char **epp, *cp; 1659 register struct env_lst *ep; 1660 extern char *index(); 1661 1662 for (epp = environ; *epp; epp++) { 1663 if (cp = index(*epp, '=')) { 1664 *cp = '\0'; 1665 ep = env_define((unsigned char *)*epp, 1666 (unsigned char *)cp+1); 1667 ep->export = 0; 1668 *cp = '='; 1669 } 1670 } 1671 /* 1672 * Special case for DISPLAY variable. If it is ":0.0" or 1673 * "unix:0.0", we have to get rid of "unix" and insert our 1674 * hostname. 1675 */ 1676 if ((ep = env_find("DISPLAY")) 1677 && ((*ep->value == ':') 1678 || (strncmp((char *)ep->value, "unix:", 5) == 0))) { 1679 char hbuf[256+1]; 1680 char *cp2 = index((char *)ep->value, ':'); 1681 1682 gethostname(hbuf, 256); 1683 hbuf[256] = '\0'; 1684 cp = (char *)malloc(strlen(hbuf) + strlen(cp2) + 1); 1685 sprintf((char *)cp, "%s%s", hbuf, cp2); 1686 free(ep->value); 1687 ep->value = (unsigned char *)cp; 1688 } 1689 /* 1690 * If USER is not defined, but LOGNAME is, then add 1691 * USER with the value from LOGNAME. By default, we 1692 * don't export the USER variable. 1693 */ 1694 if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) { 1695 env_define((unsigned char *)"USER", ep->value); 1696 env_unexport((unsigned char *)"USER"); 1697 } 1698 env_export((unsigned char *)"DISPLAY"); 1699 env_export((unsigned char *)"PRINTER"); 1700 } 1701 1702 struct env_lst * 1703 env_define(var, value) 1704 unsigned char *var, *value; 1705 { 1706 register struct env_lst *ep; 1707 1708 if (ep = env_find(var)) { 1709 if (ep->var) 1710 free(ep->var); 1711 if (ep->value) 1712 free(ep->value); 1713 } else { 1714 ep = (struct env_lst *)malloc(sizeof(struct env_lst)); 1715 ep->next = envlisthead.next; 1716 envlisthead.next = ep; 1717 ep->prev = &envlisthead; 1718 if (ep->next) 1719 ep->next->prev = ep; 1720 } 1721 ep->export = 1; 1722 ep->var = (unsigned char *)strdup((char *)var); 1723 ep->value = (unsigned char *)strdup((char *)value); 1724 return(ep); 1725 } 1726 1727 void 1728 env_undefine(var) 1729 unsigned char *var; 1730 { 1731 register struct env_lst *ep; 1732 1733 if (ep = env_find(var)) { 1734 ep->prev->next = ep->next; 1735 if (ep->next) 1736 ep->next->prev = ep->prev; 1737 if (ep->var) 1738 free(ep->var); 1739 if (ep->value) 1740 free(ep->value); 1741 free(ep); 1742 } 1743 } 1744 1745 void 1746 env_export(var) 1747 unsigned char *var; 1748 { 1749 register struct env_lst *ep; 1750 1751 if (ep = env_find(var)) 1752 ep->export = 1; 1753 } 1754 1755 void 1756 env_unexport(var) 1757 unsigned char *var; 1758 { 1759 register struct env_lst *ep; 1760 1761 if (ep = env_find(var)) 1762 ep->export = 0; 1763 } 1764 1765 void 1766 env_send(var) 1767 unsigned char *var; 1768 { 1769 register struct env_lst *ep; 1770 1771 if (my_state_is_wont(TELOPT_ENVIRON)) { 1772 fprintf(stderr, 1773 "Cannot send '%s': Telnet ENVIRON option not enabled\n", 1774 var); 1775 return; 1776 } 1777 ep = env_find(var); 1778 if (ep == 0) { 1779 fprintf(stderr, "Cannot send '%s': variable not defined\n", 1780 var); 1781 return; 1782 } 1783 env_opt_start_info(); 1784 env_opt_add(ep->var); 1785 env_opt_end(0); 1786 } 1787 1788 void 1789 env_list() 1790 { 1791 register struct env_lst *ep; 1792 1793 for (ep = envlisthead.next; ep; ep = ep->next) { 1794 printf("%c %-20s %s\n", ep->export ? '*' : ' ', 1795 ep->var, ep->value); 1796 } 1797 } 1798 1799 unsigned char * 1800 env_default(init) 1801 int init; 1802 { 1803 static struct env_lst *nep = NULL; 1804 1805 if (init) { 1806 nep = &envlisthead; 1807 return; 1808 } 1809 if (nep) { 1810 while (nep = nep->next) { 1811 if (nep->export) 1812 return(nep->var); 1813 } 1814 } 1815 return(NULL); 1816 } 1817 1818 unsigned char * 1819 env_getvalue(var) 1820 unsigned char *var; 1821 { 1822 register struct env_lst *ep; 1823 1824 if (ep = env_find(var)) 1825 return(ep->value); 1826 return(NULL); 1827 } 1828 1829 #if defined(AUTHENTICATE) 1830 /* 1831 * The AUTHENTICATE command. 1832 */ 1833 1834 struct authlist { 1835 char *name; 1836 char *help; 1837 int (*handler)(); 1838 int narg; 1839 }; 1840 1841 extern int 1842 auth_enable P((int)), 1843 auth_disable P((int)), 1844 auth_status P((void)), 1845 auth_help P((void)); 1846 1847 struct authlist AuthList[] = { 1848 { "status", "Display current status of authentication information", 1849 auth_status, 0 }, 1850 { "disable", "Disable an authentication type ('auth disable ?' for more)", 1851 auth_disable, 1 }, 1852 { "enable", "Enable an authentication type ('auth enable ?' for more)", 1853 auth_enable, 1 }, 1854 { "help", 0, auth_help, 0 }, 1855 { "?", "Print help information", auth_help, 0 }, 1856 { 0 }, 1857 }; 1858 1859 static int 1860 auth_help() 1861 { 1862 struct authlist *c; 1863 1864 for (c = AuthList; c->name; c++) { 1865 if (c->help) { 1866 if (*c->help) 1867 printf("%-15s %s\n", c->name, c->help); 1868 else 1869 printf("\n"); 1870 } 1871 } 1872 return 0; 1873 } 1874 1875 auth_cmd(argc, argv) 1876 int argc; 1877 char *argv[]; 1878 { 1879 struct authlist *c; 1880 1881 c = (struct authlist *) 1882 genget(argv[1], (char **) AuthList, sizeof(struct authlist)); 1883 if (c == 0) { 1884 fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\n", 1885 argv[1]); 1886 return 0; 1887 } 1888 if (Ambiguous(c)) { 1889 fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\n", 1890 argv[1]); 1891 return 0; 1892 } 1893 if (c->narg + 2 != argc) { 1894 fprintf(stderr, 1895 "Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\n", 1896 c->narg < argc + 2 ? "only " : "", 1897 c->narg, c->narg == 1 ? "" : "s", c->name); 1898 return 0; 1899 } 1900 return((*c->handler)(argv[2], argv[3])); 1901 } 1902 #endif 1903 1904 #if defined(ENCRYPT) 1905 /* 1906 * The ENCRYPT command. 1907 */ 1908 1909 struct encryptlist { 1910 char *name; 1911 char *help; 1912 int (*handler)(); 1913 int needconnect; 1914 int minarg; 1915 int maxarg; 1916 }; 1917 1918 extern int 1919 EncryptEnable P((char *, char *)), 1920 EncryptDisable P((char *, char *)), 1921 EncryptType P((char *, char *)), 1922 EncryptStart P((char *)), 1923 EncryptStartInput P((void)), 1924 EncryptStartOutput P((void)), 1925 EncryptStop P((char *)), 1926 EncryptStopInput P((void)), 1927 EncryptStopOutput P((void)), 1928 EncryptStatus P((void)), 1929 EncryptHelp P((void)); 1930 1931 struct encryptlist EncryptList[] = { 1932 { "enable", "Enable encryption. ('encrypt enable ?' for more)", 1933 EncryptEnable, 1, 1, 2 }, 1934 { "disable", "Disable encryption. ('encrypt enable ?' for more)", 1935 EncryptDisable, 0, 1, 2 }, 1936 { "type", "Set encryptiong type. ('encrypt type ?' for more)", 1937 EncryptType, 0, 1, 1 }, 1938 { "start", "Start encryption. ('encrypt start ?' for more)", 1939 EncryptStart, 1, 0, 1 }, 1940 { "stop", "Stop encryption. ('encrypt stop ?' for more)", 1941 EncryptStop, 1, 0, 1 }, 1942 { "input", "Start encrypting the input stream", 1943 EncryptStartInput, 1, 0, 0 }, 1944 { "-input", "Stop encrypting the input stream", 1945 EncryptStopInput, 1, 0, 0 }, 1946 { "output", "Start encrypting the output stream", 1947 EncryptStartOutput, 1, 0, 0 }, 1948 { "-output", "Stop encrypting the output stream", 1949 EncryptStopOutput, 1, 0, 0 }, 1950 1951 { "status", "Display current status of authentication information", 1952 EncryptStatus, 0, 0, 0 }, 1953 { "help", 0, EncryptHelp, 0, 0, 0 }, 1954 { "?", "Print help information", EncryptHelp, 0, 0, 0 }, 1955 { 0 }, 1956 }; 1957 1958 static int 1959 EncryptHelp() 1960 { 1961 struct encryptlist *c; 1962 1963 for (c = EncryptList; c->name; c++) { 1964 if (c->help) { 1965 if (*c->help) 1966 printf("%-15s %s\n", c->name, c->help); 1967 else 1968 printf("\n"); 1969 } 1970 } 1971 return 0; 1972 } 1973 1974 encrypt_cmd(argc, argv) 1975 int argc; 1976 char *argv[]; 1977 { 1978 struct encryptlist *c; 1979 1980 c = (struct encryptlist *) 1981 genget(argv[1], (char **) EncryptList, sizeof(struct encryptlist)); 1982 if (c == 0) { 1983 fprintf(stderr, "'%s': unknown argument ('encrypt ?' for help).\n", 1984 argv[1]); 1985 return 0; 1986 } 1987 if (Ambiguous(c)) { 1988 fprintf(stderr, "'%s': ambiguous argument ('encrypt ?' for help).\n", 1989 argv[1]); 1990 return 0; 1991 } 1992 argc -= 2; 1993 if (argc < c->minarg || argc > c->maxarg) { 1994 if (c->minarg == c->maxarg) { 1995 fprintf(stderr, "Need %s%d argument%s ", 1996 c->minarg < argc ? "only " : "", c->minarg, 1997 c->minarg == 1 ? "" : "s"); 1998 } else { 1999 fprintf(stderr, "Need %s%d-%d arguments ", 2000 c->maxarg < argc ? "only " : "", c->minarg, c->maxarg); 2001 } 2002 fprintf(stderr, "to 'encrypt %s' command. 'encrypt ?' for help.\n", 2003 c->name); 2004 return 0; 2005 } 2006 if (c->needconnect && !connected) { 2007 if (!(argc && (isprefix(argv[2], "help") || isprefix(argv[2], "?")))) { 2008 printf("?Need to be connected first.\n"); 2009 return 0; 2010 } 2011 } 2012 return ((*c->handler)(argc > 0 ? argv[2] : 0, 2013 argc > 1 ? argv[3] : 0, 2014 argc > 2 ? argv[4] : 0)); 2015 } 2016 #endif 2017 2018 #if defined(unix) && defined(TN3270) 2019 char *oflgs[] = { "read-only", "write-only", "read-write" }; 2020 static void 2021 filestuff(fd) 2022 int fd; 2023 { 2024 int res; 2025 2026 #ifdef F_GETOWN 2027 setconnmode(0); 2028 res = fcntl(fd, F_GETOWN, 0); 2029 setcommandmode(); 2030 2031 if (res == -1) { 2032 perror("fcntl"); 2033 return; 2034 } 2035 printf("\tOwner is %d.\n", res); 2036 #endif 2037 2038 setconnmode(0); 2039 res = fcntl(fd, F_GETFL, 0); 2040 setcommandmode(); 2041 2042 if (res == -1) { 2043 perror("fcntl"); 2044 return; 2045 } 2046 printf("\tFlags are 0x%x: %s\n", res, oflgs[res]); 2047 } 2048 #endif /* defined(unix) && defined(TN3270) */ 2049 2050 /* 2051 * Print status about the connection. 2052 */ 2053 /*ARGSUSED*/ 2054 static 2055 status(argc, argv) 2056 int argc; 2057 char *argv[]; 2058 { 2059 if (connected) { 2060 printf("Connected to %s.\n", hostname); 2061 if ((argc < 2) || strcmp(argv[1], "notmuch")) { 2062 int mode = getconnmode(); 2063 2064 if (my_want_state_is_will(TELOPT_LINEMODE)) { 2065 printf("Operating with LINEMODE option\n"); 2066 printf("%s line editing\n", (mode&MODE_EDIT) ? "Local" : "No"); 2067 printf("%s catching of signals\n", 2068 (mode&MODE_TRAPSIG) ? "Local" : "No"); 2069 slcstate(); 2070 #ifdef KLUDGELINEMODE 2071 } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) { 2072 printf("Operating in obsolete linemode\n"); 2073 #endif 2074 } else { 2075 printf("Operating in single character mode\n"); 2076 if (localchars) 2077 printf("Catching signals locally\n"); 2078 } 2079 printf("%s character echo\n", (mode&MODE_ECHO) ? "Local" : "Remote"); 2080 if (my_want_state_is_will(TELOPT_LFLOW)) 2081 printf("%s flow control\n", (mode&MODE_FLOW) ? "Local" : "No"); 2082 #if defined(ENCRYPT) 2083 encrypt_display(); 2084 #endif 2085 } 2086 } else { 2087 printf("No connection.\n"); 2088 } 2089 # if !defined(TN3270) 2090 printf("Escape character is '%s'.\n", control(escape)); 2091 (void) fflush(stdout); 2092 # else /* !defined(TN3270) */ 2093 if ((!In3270) && ((argc < 2) || strcmp(argv[1], "notmuch"))) { 2094 printf("Escape character is '%s'.\n", control(escape)); 2095 } 2096 # if defined(unix) 2097 if ((argc >= 2) && !strcmp(argv[1], "everything")) { 2098 printf("SIGIO received %d time%s.\n", 2099 sigiocount, (sigiocount == 1)? "":"s"); 2100 if (In3270) { 2101 printf("Process ID %d, process group %d.\n", 2102 getpid(), getpgrp(getpid())); 2103 printf("Terminal input:\n"); 2104 filestuff(tin); 2105 printf("Terminal output:\n"); 2106 filestuff(tout); 2107 printf("Network socket:\n"); 2108 filestuff(net); 2109 } 2110 } 2111 if (In3270 && transcom) { 2112 printf("Transparent mode command is '%s'.\n", transcom); 2113 } 2114 # endif /* defined(unix) */ 2115 (void) fflush(stdout); 2116 if (In3270) { 2117 return 0; 2118 } 2119 # endif /* defined(TN3270) */ 2120 return 1; 2121 } 2122 2123 #ifdef SIGINFO 2124 /* 2125 * Function that gets called when SIGINFO is received. 2126 */ 2127 ayt_status() 2128 { 2129 (void) call(status, "status", "notmuch", 0); 2130 } 2131 #endif 2132 2133 int 2134 tn(argc, argv) 2135 int argc; 2136 char *argv[]; 2137 { 2138 register struct hostent *host = 0; 2139 struct sockaddr_in sin; 2140 struct servent *sp = 0; 2141 unsigned long temp; 2142 extern char *inet_ntoa(); 2143 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2144 char *srp = 0, *strrchr(); 2145 unsigned long sourceroute(), srlen; 2146 #endif 2147 char *cmd, *hostp = 0, *portp = 0, *user = 0; 2148 2149 /* clear the socket address prior to use */ 2150 bzero((char *)&sin, sizeof(sin)); 2151 2152 if (connected) { 2153 printf("?Already connected to %s\n", hostname); 2154 setuid(getuid()); 2155 return 0; 2156 } 2157 if (argc < 2) { 2158 (void) strcpy(line, "open "); 2159 printf("(to) "); 2160 (void) fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin); 2161 makeargv(); 2162 argc = margc; 2163 argv = margv; 2164 } 2165 cmd = *argv; 2166 --argc; ++argv; 2167 while (argc) { 2168 if (isprefix(*argv, "help") || isprefix(*argv, "?")) 2169 goto usage; 2170 if (strcmp(*argv, "-l") == 0) { 2171 --argc; ++argv; 2172 if (argc == 0) 2173 goto usage; 2174 user = *argv++; 2175 --argc; 2176 continue; 2177 } 2178 if (strcmp(*argv, "-a") == 0) { 2179 --argc; ++argv; 2180 autologin = 1; 2181 continue; 2182 } 2183 if (hostp == 0) { 2184 hostp = *argv++; 2185 --argc; 2186 continue; 2187 } 2188 if (portp == 0) { 2189 portp = *argv++; 2190 --argc; 2191 continue; 2192 } 2193 usage: 2194 printf("usage: %s [-l user] [-a] host-name [port]\n", cmd); 2195 setuid(getuid()); 2196 return 0; 2197 } 2198 if (hostp == 0) 2199 goto usage; 2200 2201 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2202 if (hostp[0] == '@' || hostp[0] == '!') { 2203 if ((hostname = strrchr(hostp, ':')) == NULL) 2204 hostname = strrchr(hostp, '@'); 2205 hostname++; 2206 srp = 0; 2207 temp = sourceroute(hostp, &srp, &srlen); 2208 if (temp == 0) { 2209 herror(srp); 2210 setuid(getuid()); 2211 return 0; 2212 } else if (temp == -1) { 2213 printf("Bad source route option: %s\n", hostp); 2214 setuid(getuid()); 2215 return 0; 2216 } else { 2217 sin.sin_addr.s_addr = temp; 2218 sin.sin_family = AF_INET; 2219 } 2220 } else { 2221 #endif 2222 temp = inet_addr(hostp); 2223 if (temp != (unsigned long) -1) { 2224 sin.sin_addr.s_addr = temp; 2225 sin.sin_family = AF_INET; 2226 (void) strcpy(_hostname, hostp); 2227 hostname = _hostname; 2228 } else { 2229 host = gethostbyname(hostp); 2230 if (host) { 2231 sin.sin_family = host->h_addrtype; 2232 #if defined(h_addr) /* In 4.3, this is a #define */ 2233 memcpy((caddr_t)&sin.sin_addr, 2234 host->h_addr_list[0], host->h_length); 2235 #else /* defined(h_addr) */ 2236 memcpy((caddr_t)&sin.sin_addr, host->h_addr, host->h_length); 2237 #endif /* defined(h_addr) */ 2238 strncpy(_hostname, host->h_name, sizeof(_hostname)); 2239 _hostname[sizeof(_hostname)-1] = '\0'; 2240 hostname = _hostname; 2241 } else { 2242 herror(hostp); 2243 setuid(getuid()); 2244 return 0; 2245 } 2246 } 2247 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2248 } 2249 #endif 2250 if (portp) { 2251 if (*portp == '-') { 2252 portp++; 2253 telnetport = 1; 2254 } else 2255 telnetport = 0; 2256 sin.sin_port = atoi(portp); 2257 if (sin.sin_port == 0) { 2258 sp = getservbyname(portp, "tcp"); 2259 if (sp) 2260 sin.sin_port = sp->s_port; 2261 else { 2262 printf("%s: bad port number\n", portp); 2263 setuid(getuid()); 2264 return 0; 2265 } 2266 } else { 2267 #if !defined(htons) 2268 u_short htons(); 2269 #endif /* !defined(htons) */ 2270 sin.sin_port = htons(sin.sin_port); 2271 } 2272 } else { 2273 if (sp == 0) { 2274 sp = getservbyname("telnet", "tcp"); 2275 if (sp == 0) { 2276 fprintf(stderr, "telnet: tcp/telnet: unknown service\n"); 2277 setuid(getuid()); 2278 return 0; 2279 } 2280 sin.sin_port = sp->s_port; 2281 } 2282 telnetport = 1; 2283 } 2284 printf("Trying %s...\n", inet_ntoa(sin.sin_addr)); 2285 do { 2286 net = socket(AF_INET, SOCK_STREAM, 0); 2287 setuid(getuid()); 2288 if (net < 0) { 2289 perror("telnet: socket"); 2290 return 0; 2291 } 2292 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2293 if (srp && setsockopt(net, IPPROTO_IP, IP_OPTIONS, (char *)srp, srlen) < 0) 2294 perror("setsockopt (IP_OPTIONS)"); 2295 #endif 2296 #if defined(IPPROTO_IP) && defined(IP_TOS) 2297 { 2298 # if defined(HAS_GETTOS) 2299 struct tosent *tp; 2300 if (tos < 0 && (tp = gettosbyname("telnet", "tcp"))) 2301 tos = tp->t_tos; 2302 # endif 2303 if (tos < 0) 2304 tos = 020; /* Low Delay bit */ 2305 if (tos 2306 && (setsockopt(net, IPPROTO_IP, IP_TOS, &tos, sizeof(int)) < 0) 2307 && (errno != ENOPROTOOPT)) 2308 perror("telnet: setsockopt (IP_TOS) (ignored)"); 2309 } 2310 #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 2311 2312 if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) { 2313 perror("setsockopt (SO_DEBUG)"); 2314 } 2315 2316 if (connect(net, (struct sockaddr *)&sin, sizeof (sin)) < 0) { 2317 #if defined(h_addr) /* In 4.3, this is a #define */ 2318 if (host && host->h_addr_list[1]) { 2319 int oerrno = errno; 2320 2321 fprintf(stderr, "telnet: connect to address %s: ", 2322 inet_ntoa(sin.sin_addr)); 2323 errno = oerrno; 2324 perror((char *)0); 2325 host->h_addr_list++; 2326 memcpy((caddr_t)&sin.sin_addr, 2327 host->h_addr_list[0], host->h_length); 2328 (void) NetClose(net); 2329 continue; 2330 } 2331 #endif /* defined(h_addr) */ 2332 perror("telnet: Unable to connect to remote host"); 2333 return 0; 2334 } 2335 connected++; 2336 #if defined(AUTHENTICATE) || defined(ENCRYPT) 2337 auth_encrypt_connect(connected); 2338 #endif 2339 } while (connected == 0); 2340 cmdrc(hostp, hostname); 2341 if (autologin && user == NULL) { 2342 struct passwd *pw; 2343 2344 user = getenv("USER"); 2345 if (user == NULL || 2346 (pw = getpwnam(user)) && pw->pw_uid != getuid()) { 2347 if (pw = getpwuid(getuid())) 2348 user = pw->pw_name; 2349 else 2350 user = NULL; 2351 } 2352 } 2353 if (user) { 2354 env_define((unsigned char *)"USER", (unsigned char *)user); 2355 env_export((unsigned char *)"USER"); 2356 } 2357 (void) call(status, "status", "notmuch", 0); 2358 if (setjmp(peerdied) == 0) 2359 telnet(user); 2360 (void) NetClose(net); 2361 ExitString("Connection closed by foreign host.\n",1); 2362 /*NOTREACHED*/ 2363 } 2364 2365 #define HELPINDENT (sizeof ("connect")) 2366 2367 static char 2368 openhelp[] = "connect to a site", 2369 closehelp[] = "close current connection", 2370 logouthelp[] = "forcibly logout remote user and close the connection", 2371 quithelp[] = "exit telnet", 2372 statushelp[] = "print status information", 2373 helphelp[] = "print help information", 2374 sendhelp[] = "transmit special characters ('send ?' for more)", 2375 sethelp[] = "set operating parameters ('set ?' for more)", 2376 unsethelp[] = "unset operating parameters ('unset ?' for more)", 2377 togglestring[] ="toggle operating parameters ('toggle ?' for more)", 2378 slchelp[] = "change state of special charaters ('slc ?' for more)", 2379 displayhelp[] = "display operating parameters", 2380 #if defined(TN3270) && defined(unix) 2381 transcomhelp[] = "specify Unix command for transparent mode pipe", 2382 #endif /* defined(TN3270) && defined(unix) */ 2383 #if defined(AUTHENTICATE) 2384 authhelp[] = "turn on (off) authentication ('auth ?' for more)", 2385 #endif 2386 #if defined(ENCRYPT) 2387 encrypthelp[] = "turn on (off) encryption ('encrypt ?' for more)", 2388 #endif 2389 #if defined(unix) 2390 zhelp[] = "suspend telnet", 2391 #endif /* defined(unix) */ 2392 shellhelp[] = "invoke a subshell", 2393 envhelp[] = "change environment variables ('environ ?' for more)", 2394 modestring[] = "try to enter line or character mode ('mode ?' for more)"; 2395 2396 static int help(); 2397 2398 static Command cmdtab[] = { 2399 { "close", closehelp, bye, 1 }, 2400 { "logout", logouthelp, logout, 1 }, 2401 { "display", displayhelp, display, 0 }, 2402 { "mode", modestring, modecmd, 0 }, 2403 { "open", openhelp, tn, 0 }, 2404 { "quit", quithelp, quit, 0 }, 2405 { "send", sendhelp, sendcmd, 0 }, 2406 { "set", sethelp, setcmd, 0 }, 2407 { "unset", unsethelp, unsetcmd, 0 }, 2408 { "status", statushelp, status, 0 }, 2409 { "toggle", togglestring, toggle, 0 }, 2410 { "slc", slchelp, slccmd, 0 }, 2411 #if defined(TN3270) && defined(unix) 2412 { "transcom", transcomhelp, settranscom, 0 }, 2413 #endif /* defined(TN3270) && defined(unix) */ 2414 #if defined(AUTHENTICATE) 2415 { "auth", authhelp, auth_cmd, 0 }, 2416 #endif 2417 #if defined(ENCRYPT) 2418 { "encrypt", encrypthelp, encrypt_cmd, 0 }, 2419 #endif 2420 #if defined(unix) 2421 { "z", zhelp, suspend, 0 }, 2422 #endif /* defined(unix) */ 2423 #if defined(TN3270) 2424 { "!", shellhelp, shell, 1 }, 2425 #else 2426 { "!", shellhelp, shell, 0 }, 2427 #endif 2428 { "environ", envhelp, env_cmd, 0 }, 2429 { "?", helphelp, help, 0 }, 2430 0 2431 }; 2432 2433 static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead"; 2434 static char escapehelp[] = "deprecated command -- use 'set escape' instead"; 2435 2436 static Command cmdtab2[] = { 2437 { "help", 0, help, 0 }, 2438 { "escape", escapehelp, setescape, 0 }, 2439 { "crmod", crmodhelp, togcrmod, 0 }, 2440 0 2441 }; 2442 2443 2444 /* 2445 * Call routine with argc, argv set from args (terminated by 0). 2446 */ 2447 2448 /*VARARGS1*/ 2449 static 2450 call(va_alist) 2451 va_dcl 2452 { 2453 va_list ap; 2454 typedef int (*intrtn_t)(); 2455 intrtn_t routine; 2456 char *args[100]; 2457 int argno = 0; 2458 2459 va_start(ap); 2460 routine = (va_arg(ap, intrtn_t)); 2461 while ((args[argno++] = va_arg(ap, char *)) != 0) { 2462 ; 2463 } 2464 va_end(ap); 2465 return (*routine)(argno-1, args); 2466 } 2467 2468 2469 static Command * 2470 getcmd(name) 2471 char *name; 2472 { 2473 Command *cm; 2474 2475 if (cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command))) 2476 return cm; 2477 return (Command *) genget(name, (char **) cmdtab2, sizeof(Command)); 2478 } 2479 2480 void 2481 command(top, tbuf, cnt) 2482 int top; 2483 char *tbuf; 2484 int cnt; 2485 { 2486 register Command *c; 2487 2488 setcommandmode(); 2489 if (!top) { 2490 putchar('\n'); 2491 #if defined(unix) 2492 } else { 2493 (void) signal(SIGINT, SIG_DFL); 2494 (void) signal(SIGQUIT, SIG_DFL); 2495 #endif /* defined(unix) */ 2496 } 2497 for (;;) { 2498 if (rlogin == _POSIX_VDISABLE) 2499 printf("%s> ", prompt); 2500 if (tbuf) { 2501 register char *cp; 2502 cp = line; 2503 while (cnt > 0 && (*cp++ = *tbuf++) != '\n') 2504 cnt--; 2505 tbuf = 0; 2506 if (cp == line || *--cp != '\n' || cp == line) 2507 goto getline; 2508 *cp = '\0'; 2509 if (rlogin == _POSIX_VDISABLE) 2510 printf("%s\n", line); 2511 } else { 2512 getline: 2513 if (rlogin != _POSIX_VDISABLE) 2514 printf("%s> ", prompt); 2515 if (fgets(line, sizeof(line), stdin) == NULL) { 2516 if (feof(stdin) || ferror(stdin)) { 2517 (void) quit(); 2518 /*NOTREACHED*/ 2519 } 2520 break; 2521 } 2522 } 2523 if (line[0] == 0) 2524 break; 2525 makeargv(); 2526 if (margv[0] == 0) { 2527 break; 2528 } 2529 c = getcmd(margv[0]); 2530 if (Ambiguous(c)) { 2531 printf("?Ambiguous command\n"); 2532 continue; 2533 } 2534 if (c == 0) { 2535 printf("?Invalid command\n"); 2536 continue; 2537 } 2538 if (c->needconnect && !connected) { 2539 printf("?Need to be connected first.\n"); 2540 continue; 2541 } 2542 if ((*c->handler)(margc, margv)) { 2543 break; 2544 } 2545 } 2546 if (!top) { 2547 if (!connected) { 2548 longjmp(toplevel, 1); 2549 /*NOTREACHED*/ 2550 } 2551 #if defined(TN3270) 2552 if (shell_active == 0) { 2553 setconnmode(0); 2554 } 2555 #else /* defined(TN3270) */ 2556 setconnmode(0); 2557 #endif /* defined(TN3270) */ 2558 } 2559 } 2560 2561 /* 2562 * Help command. 2563 */ 2564 static 2565 help(argc, argv) 2566 int argc; 2567 char *argv[]; 2568 { 2569 register Command *c; 2570 2571 if (argc == 1) { 2572 printf("Commands may be abbreviated. Commands are:\n\n"); 2573 for (c = cmdtab; c->name; c++) 2574 if (c->help) { 2575 printf("%-*s\t%s\n", HELPINDENT, c->name, 2576 c->help); 2577 } 2578 return 0; 2579 } 2580 while (--argc > 0) { 2581 register char *arg; 2582 arg = *++argv; 2583 c = getcmd(arg); 2584 if (Ambiguous(c)) 2585 printf("?Ambiguous help command %s\n", arg); 2586 else if (c == (Command *)0) 2587 printf("?Invalid help command %s\n", arg); 2588 else 2589 printf("%s\n", c->help); 2590 } 2591 return 0; 2592 } 2593 2594 static char *rcname = 0; 2595 static char rcbuf[128]; 2596 2597 cmdrc(m1, m2) 2598 char *m1, *m2; 2599 { 2600 register Command *c; 2601 FILE *rcfile; 2602 int gotmachine = 0; 2603 int l1 = strlen(m1); 2604 int l2 = strlen(m2); 2605 char m1save[64]; 2606 2607 if (skiprc) 2608 return; 2609 2610 strcpy(m1save, m1); 2611 m1 = m1save; 2612 2613 if (rcname == 0) { 2614 rcname = getenv("HOME"); 2615 if (rcname) 2616 strcpy(rcbuf, rcname); 2617 else 2618 rcbuf[0] = '\0'; 2619 strcat(rcbuf, "/.telnetrc"); 2620 rcname = rcbuf; 2621 } 2622 2623 if ((rcfile = fopen(rcname, "r")) == 0) { 2624 return; 2625 } 2626 2627 for (;;) { 2628 if (fgets(line, sizeof(line), rcfile) == NULL) 2629 break; 2630 if (line[0] == 0) 2631 break; 2632 if (line[0] == '#') 2633 continue; 2634 if (gotmachine) { 2635 if (!isspace(line[0])) 2636 gotmachine = 0; 2637 } 2638 if (gotmachine == 0) { 2639 if (isspace(line[0])) 2640 continue; 2641 if (strncasecmp(line, m1, l1) == 0) 2642 strncpy(line, &line[l1], sizeof(line) - l1); 2643 else if (strncasecmp(line, m2, l2) == 0) 2644 strncpy(line, &line[l2], sizeof(line) - l2); 2645 else if (strncasecmp(line, "DEFAULT", 7) == 0) 2646 strncpy(line, &line[7], sizeof(line) - 7); 2647 else 2648 continue; 2649 if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n') 2650 continue; 2651 gotmachine = 1; 2652 } 2653 makeargv(); 2654 if (margv[0] == 0) 2655 continue; 2656 c = getcmd(margv[0]); 2657 if (Ambiguous(c)) { 2658 printf("?Ambiguous command: %s\n", margv[0]); 2659 continue; 2660 } 2661 if (c == 0) { 2662 printf("?Invalid command: %s\n", margv[0]); 2663 continue; 2664 } 2665 /* 2666 * This should never happen... 2667 */ 2668 if (c->needconnect && !connected) { 2669 printf("?Need to be connected first for %s.\n", margv[0]); 2670 continue; 2671 } 2672 (*c->handler)(margc, margv); 2673 } 2674 fclose(rcfile); 2675 } 2676 2677 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2678 2679 /* 2680 * Source route is handed in as 2681 * [!]@hop1@hop2...[@|:]dst 2682 * If the leading ! is present, it is a 2683 * strict source route, otherwise it is 2684 * assmed to be a loose source route. 2685 * 2686 * We fill in the source route option as 2687 * hop1,hop2,hop3...dest 2688 * and return a pointer to hop1, which will 2689 * be the address to connect() to. 2690 * 2691 * Arguments: 2692 * arg: pointer to route list to decipher 2693 * 2694 * cpp: If *cpp is not equal to NULL, this is a 2695 * pointer to a pointer to a character array 2696 * that should be filled in with the option. 2697 * 2698 * lenp: pointer to an integer that contains the 2699 * length of *cpp if *cpp != NULL. 2700 * 2701 * Return values: 2702 * 2703 * Returns the address of the host to connect to. If the 2704 * return value is -1, there was a syntax error in the 2705 * option, either unknown characters, or too many hosts. 2706 * If the return value is 0, one of the hostnames in the 2707 * path is unknown, and *cpp is set to point to the bad 2708 * hostname. 2709 * 2710 * *cpp: If *cpp was equal to NULL, it will be filled 2711 * in with a pointer to our static area that has 2712 * the option filled in. This will be 32bit aligned. 2713 * 2714 * *lenp: This will be filled in with how long the option 2715 * pointed to by *cpp is. 2716 * 2717 */ 2718 unsigned long 2719 sourceroute(arg, cpp, lenp) 2720 char *arg; 2721 char **cpp; 2722 int *lenp; 2723 { 2724 static char lsr[44]; 2725 char *cp, *cp2, *lsrp, *lsrep; 2726 register int tmp; 2727 struct in_addr sin_addr; 2728 register struct hostent *host = 0; 2729 register char c; 2730 2731 /* 2732 * Verify the arguments, and make sure we have 2733 * at least 7 bytes for the option. 2734 */ 2735 if (cpp == NULL || lenp == NULL) 2736 return((unsigned long)-1); 2737 if (*cpp != NULL && *lenp < 7) 2738 return((unsigned long)-1); 2739 /* 2740 * Decide whether we have a buffer passed to us, 2741 * or if we need to use our own static buffer. 2742 */ 2743 if (*cpp) { 2744 lsrp = *cpp; 2745 lsrep = lsrp + *lenp; 2746 } else { 2747 *cpp = lsrp = lsr; 2748 lsrep = lsrp + 44; 2749 } 2750 2751 cp = arg; 2752 2753 /* 2754 * Next, decide whether we have a loose source 2755 * route or a strict source route, and fill in 2756 * the begining of the option. 2757 */ 2758 if (*cp == '!') { 2759 cp++; 2760 *lsrp++ = IPOPT_SSRR; 2761 } else 2762 *lsrp++ = IPOPT_LSRR; 2763 2764 if (*cp != '@') 2765 return((unsigned long)-1); 2766 2767 lsrp++; /* skip over length, we'll fill it in later */ 2768 *lsrp++ = 4; 2769 2770 cp++; 2771 2772 sin_addr.s_addr = 0; 2773 2774 for (c = 0;;) { 2775 if (c == ':') 2776 cp2 = 0; 2777 else for (cp2 = cp; c = *cp2; cp2++) { 2778 if (c == ',') { 2779 *cp2++ = '\0'; 2780 if (*cp2 == '@') 2781 cp2++; 2782 } else if (c == '@') { 2783 *cp2++ = '\0'; 2784 } else if (c == ':') { 2785 *cp2++ = '\0'; 2786 } else 2787 continue; 2788 break; 2789 } 2790 if (!c) 2791 cp2 = 0; 2792 2793 if ((tmp = inet_addr(cp)) != -1) { 2794 sin_addr.s_addr = tmp; 2795 } else if (host = gethostbyname(cp)) { 2796 #if defined(h_addr) 2797 memcpy((caddr_t)&sin_addr, 2798 host->h_addr_list[0], host->h_length); 2799 #else 2800 memcpy((caddr_t)&sin_addr, host->h_addr, host->h_length); 2801 #endif 2802 } else { 2803 *cpp = cp; 2804 return(0); 2805 } 2806 memcpy(lsrp, (char *)&sin_addr, 4); 2807 lsrp += 4; 2808 if (cp2) 2809 cp = cp2; 2810 else 2811 break; 2812 /* 2813 * Check to make sure there is space for next address 2814 */ 2815 if (lsrp + 4 > lsrep) 2816 return((unsigned long)-1); 2817 } 2818 if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) { 2819 *cpp = 0; 2820 *lenp = 0; 2821 return((unsigned long)-1); 2822 } 2823 *lsrp++ = IPOPT_NOP; /* 32 bit word align it */ 2824 *lenp = lsrp - *cpp; 2825 return(sin_addr.s_addr); 2826 } 2827 #endif 2828