1 /* $NetBSD: commands.c,v 1.20 1998/03/30 02:30:08 mrg Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)commands.c 8.4 (Berkeley) 5/30/95"; 40 #else 41 __RCSID("$NetBSD: commands.c,v 1.20 1998/03/30 02:30:08 mrg Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #if defined(unix) 46 #include <sys/param.h> 47 #if defined(CRAY) || defined(sysV88) 48 #include <sys/types.h> 49 #endif 50 #include <sys/file.h> 51 #else 52 #include <sys/types.h> 53 #endif /* defined(unix) */ 54 #include <sys/wait.h> 55 #include <sys/socket.h> 56 #include <netinet/in.h> 57 #include <arpa/inet.h> 58 #ifdef CRAY 59 #include <fcntl.h> 60 #endif /* CRAY */ 61 62 #include <signal.h> 63 #include <netdb.h> 64 #include <ctype.h> 65 #include <pwd.h> 66 #ifdef __STDC__ 67 #include <stdarg.h> 68 #else 69 #include <varargs.h> 70 #endif 71 #include <errno.h> 72 #include <unistd.h> 73 74 #include <arpa/telnet.h> 75 #include <sys/cdefs.h> 76 #define P __P 77 78 #include "general.h" 79 80 #include "ring.h" 81 82 #include "externs.h" 83 #include "defines.h" 84 #include "types.h" 85 #include <libtelnet/misc.h> 86 87 #if !defined(CRAY) && !defined(sysV88) 88 #include <netinet/in_systm.h> 89 # if (defined(vax) || defined(tahoe) || defined(hp300)) && !defined(ultrix) 90 # include <machine/endian.h> 91 # endif /* vax */ 92 #endif /* !defined(CRAY) && !defined(sysV88) */ 93 #include <netinet/ip.h> 94 95 96 #ifndef MAXHOSTNAMELEN 97 #define MAXHOSTNAMELEN 64 98 #endif MAXHOSTNAMELEN 99 100 #if defined(IPPROTO_IP) && defined(IP_TOS) 101 int tos = -1; 102 #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 103 104 char *hostname; 105 static char _hostname[MAXHOSTNAMELEN]; 106 107 typedef struct { 108 char *name; /* command name */ 109 char *help; /* help string (NULL for no help) */ 110 int (*handler) /* routine which executes command */ 111 P((int, char *[])); 112 int needconnect; /* Do we need to be connected to execute? */ 113 } Command; 114 115 static char line[256]; 116 static char saveline[256]; 117 static int margc; 118 static char *margv[20]; 119 120 static void makeargv P((void)); 121 static int special P((char *)); 122 static char *control P((cc_t)); 123 static int sendcmd P((int, char **)); 124 static int send_esc P((char *)); 125 static int send_docmd P((char *)); 126 static int send_dontcmd P((char *)); 127 static int send_willcmd P((char *)); 128 static int send_wontcmd P((char *)); 129 static int send_help P((char *)); 130 static int lclchars P((int)); 131 static int togdebug P((int)); 132 static int togcrlf P((int)); 133 static int togbinary P((int)); 134 static int togrbinary P((int)); 135 static int togxbinary P((int)); 136 static int togglehelp P((int)); 137 static void settogglehelp P((int)); 138 static int toggle P((int, char *[])); 139 static struct setlist *getset P((char *)); 140 static int setcmd P((int, char *[])); 141 static int unsetcmd P((int, char *[])); 142 static int dokludgemode P((int)); 143 static int dolinemode P((int)); 144 static int docharmode P((int)); 145 static int dolmmode P((int, int )); 146 static int modecmd P((int, char *[])); 147 static int display P((int, char *[])); 148 static int setescape P((int, char *[])); 149 static int togcrmod P((int, char *[])); 150 static int bye P((int, char *[])); 151 static void slc_help P((int)); 152 static struct slclist *getslc P((char *)); 153 static int slccmd P((int, char *[])); 154 static struct env_lst *env_help P((unsigned char *, unsigned char *)); 155 static struct envlist *getenvcmd P((char *)); 156 #ifdef AUTHENTICATION 157 static int auth_help P((void)); 158 #endif 159 #if defined(unix) && defined(TN3270) 160 static void filestuff P((int)); 161 #endif 162 static int status P((int, char *[])); 163 typedef int (*intrtn_t) P((int, char **)); 164 static int call P((intrtn_t, ...)); 165 static Command *getcmd P((char *)); 166 static int help P((int, char *[])); 167 168 static void 169 makeargv() 170 { 171 register char *cp, *cp2, c; 172 register char **argp = margv; 173 174 margc = 0; 175 cp = line; 176 if (*cp == '!') { /* Special case shell escape */ 177 strcpy(saveline, line); /* save for shell command */ 178 *argp++ = "!"; /* No room in string to get this */ 179 margc++; 180 cp++; 181 } 182 while ((c = *cp) != '\0') { 183 register int inquote = 0; 184 while (isspace(c)) 185 c = *++cp; 186 if (c == '\0') 187 break; 188 *argp++ = cp; 189 margc += 1; 190 for (cp2 = cp; c != '\0'; c = *++cp) { 191 if (inquote) { 192 if (c == inquote) { 193 inquote = 0; 194 continue; 195 } 196 } else { 197 if (c == '\\') { 198 if ((c = *++cp) == '\0') 199 break; 200 } else if (c == '"') { 201 inquote = '"'; 202 continue; 203 } else if (c == '\'') { 204 inquote = '\''; 205 continue; 206 } else if (isspace(c)) 207 break; 208 } 209 *cp2++ = c; 210 } 211 *cp2 = '\0'; 212 if (c == '\0') 213 break; 214 cp++; 215 } 216 *argp++ = 0; 217 } 218 219 /* 220 * Make a character string into a number. 221 * 222 * Todo: 1. Could take random integers (12, 0x12, 012, 0b1). 223 */ 224 225 static int 226 special(s) 227 register char *s; 228 { 229 register char c; 230 char b; 231 232 switch (*s) { 233 case '^': 234 b = *++s; 235 if (b == '?') { 236 c = b | 0x40; /* DEL */ 237 } else { 238 c = b & 0x1f; 239 } 240 break; 241 default: 242 c = *s; 243 break; 244 } 245 return c; 246 } 247 248 /* 249 * Construct a control character sequence 250 * for a special character. 251 */ 252 static char * 253 control(c) 254 register cc_t c; 255 { 256 static char buf[5]; 257 /* 258 * The only way I could get the Sun 3.5 compiler 259 * to shut up about 260 * if ((unsigned int)c >= 0x80) 261 * was to assign "c" to an unsigned int variable... 262 * Arggg.... 263 */ 264 register unsigned int uic = (unsigned int)c; 265 266 if (uic == 0x7f) 267 return ("^?"); 268 if (c == (cc_t)_POSIX_VDISABLE) { 269 return "off"; 270 } 271 if (uic >= 0x80) { 272 buf[0] = '\\'; 273 buf[1] = ((c>>6)&07) + '0'; 274 buf[2] = ((c>>3)&07) + '0'; 275 buf[3] = (c&07) + '0'; 276 buf[4] = 0; 277 } else if (uic >= 0x20) { 278 buf[0] = c; 279 buf[1] = 0; 280 } else { 281 buf[0] = '^'; 282 buf[1] = '@'+c; 283 buf[2] = 0; 284 } 285 return (buf); 286 } 287 288 289 290 /* 291 * The following are data structures and routines for 292 * the "send" command. 293 * 294 */ 295 296 struct sendlist { 297 char *name; /* How user refers to it (case independent) */ 298 char *help; /* Help information (0 ==> no help) */ 299 int needconnect; /* Need to be connected */ 300 int narg; /* Number of arguments */ 301 int (*handler) /* Routine to perform (for special ops) */ 302 P((char *)); 303 int nbyte; /* Number of bytes to send this command */ 304 int what; /* Character to be sent (<0 ==> special) */ 305 }; 306 307 308 static struct sendlist Sendlist[] = { 309 { "ao", "Send Telnet Abort output", 1, 0, 0, 2, AO }, 310 { "ayt", "Send Telnet 'Are You There'", 1, 0, 0, 2, AYT }, 311 { "brk", "Send Telnet Break", 1, 0, 0, 2, BREAK }, 312 { "break", 0, 1, 0, 0, 2, BREAK }, 313 { "ec", "Send Telnet Erase Character", 1, 0, 0, 2, EC }, 314 { "el", "Send Telnet Erase Line", 1, 0, 0, 2, EL }, 315 { "escape", "Send current escape character", 1, 0, send_esc, 1, 0 }, 316 { "ga", "Send Telnet 'Go Ahead' sequence", 1, 0, 0, 2, GA }, 317 { "ip", "Send Telnet Interrupt Process", 1, 0, 0, 2, IP }, 318 { "intp", 0, 1, 0, 0, 2, IP }, 319 { "interrupt", 0, 1, 0, 0, 2, IP }, 320 { "intr", 0, 1, 0, 0, 2, IP }, 321 { "nop", "Send Telnet 'No operation'", 1, 0, 0, 2, NOP }, 322 { "eor", "Send Telnet 'End of Record'", 1, 0, 0, 2, EOR }, 323 { "abort", "Send Telnet 'Abort Process'", 1, 0, 0, 2, ABORT }, 324 { "susp", "Send Telnet 'Suspend Process'", 1, 0, 0, 2, SUSP }, 325 { "eof", "Send Telnet End of File Character", 1, 0, 0, 2, xEOF }, 326 { "synch", "Perform Telnet 'Synch operation'", 1, 0, dosynch, 2, 0 }, 327 { "getstatus", "Send request for STATUS", 1, 0, get_status, 6, 0 }, 328 { "?", "Display send options", 0, 0, send_help, 0, 0 }, 329 { "help", 0, 0, 0, send_help, 0, 0 }, 330 { "do", 0, 0, 1, send_docmd, 3, 0 }, 331 { "dont", 0, 0, 1, send_dontcmd, 3, 0 }, 332 { "will", 0, 0, 1, send_willcmd, 3, 0 }, 333 { "wont", 0, 0, 1, send_wontcmd, 3, 0 }, 334 { 0 } 335 }; 336 337 #define GETSEND(name) ((struct sendlist *) genget(name, (char **) Sendlist, \ 338 sizeof(struct sendlist))) 339 340 static int 341 sendcmd(argc, argv) 342 int argc; 343 char **argv; 344 { 345 int count; /* how many bytes we are going to need to send */ 346 int i; 347 struct sendlist *s; /* pointer to current command */ 348 int success = 0; 349 int needconnect = 0; 350 351 if (argc < 2) { 352 printf("need at least one argument for 'send' command\n"); 353 printf("'send ?' for help\n"); 354 return 0; 355 } 356 /* 357 * First, validate all the send arguments. 358 * In addition, we see how much space we are going to need, and 359 * whether or not we will be doing a "SYNCH" operation (which 360 * flushes the network queue). 361 */ 362 count = 0; 363 for (i = 1; i < argc; i++) { 364 s = GETSEND(argv[i]); 365 if (s == 0) { 366 printf("Unknown send argument '%s'\n'send ?' for help.\n", 367 argv[i]); 368 return 0; 369 } else if (Ambiguous(s)) { 370 printf("Ambiguous send argument '%s'\n'send ?' for help.\n", 371 argv[i]); 372 return 0; 373 } 374 if (i + s->narg >= argc) { 375 fprintf(stderr, 376 "Need %d argument%s to 'send %s' command. 'send %s ?' for help.\n", 377 s->narg, s->narg == 1 ? "" : "s", s->name, s->name); 378 return 0; 379 } 380 count += s->nbyte; 381 if (s->handler == send_help) { 382 send_help(NULL); 383 return 0; 384 } 385 386 i += s->narg; 387 needconnect += s->needconnect; 388 } 389 if (!connected && needconnect) { 390 printf("?Need to be connected first.\n"); 391 printf("'send ?' for help\n"); 392 return 0; 393 } 394 /* Now, do we have enough room? */ 395 if (NETROOM() < count) { 396 printf("There is not enough room in the buffer TO the network\n"); 397 printf("to process your request. Nothing will be done.\n"); 398 printf("('send synch' will throw away most data in the network\n"); 399 printf("buffer, if this might help.)\n"); 400 return 0; 401 } 402 /* OK, they are all OK, now go through again and actually send */ 403 count = 0; 404 for (i = 1; i < argc; i++) { 405 if ((s = GETSEND(argv[i])) == 0) { 406 fprintf(stderr, "Telnet 'send' error - argument disappeared!\n"); 407 (void) quit(0, NULL); 408 /*NOTREACHED*/ 409 } 410 if (s->handler) { 411 count++; 412 success += (*s->handler)(argv[i+1]); 413 i += s->narg; 414 } else { 415 NET2ADD(IAC, s->what); 416 printoption("SENT", IAC, s->what); 417 } 418 } 419 return (count == success); 420 } 421 422 static int 423 send_esc(s) 424 char *s; 425 { 426 NETADD(escape); 427 return 1; 428 } 429 430 static int 431 send_docmd(name) 432 char *name; 433 { 434 return(send_tncmd(send_do, "do", name)); 435 } 436 437 static int 438 send_dontcmd(name) 439 char *name; 440 { 441 return(send_tncmd(send_dont, "dont", name)); 442 } 443 static int 444 send_willcmd(name) 445 char *name; 446 { 447 return(send_tncmd(send_will, "will", name)); 448 } 449 static int 450 send_wontcmd(name) 451 char *name; 452 { 453 return(send_tncmd(send_wont, "wont", name)); 454 } 455 456 int 457 send_tncmd(func, cmd, name) 458 void (*func) P((int, int)); 459 char *cmd, *name; 460 { 461 char **cpp; 462 extern char *telopts[]; 463 register int val = 0; 464 465 if (isprefix(name, "?")) { 466 register int col, len; 467 468 printf("Usage: send %s <value|option>\n", cmd); 469 printf("\"value\" must be from 0 to 255\n"); 470 printf("Valid options are:\n\t"); 471 472 col = 8; 473 for (cpp = telopts; *cpp; cpp++) { 474 len = strlen(*cpp) + 3; 475 if (col + len > 65) { 476 printf("\n\t"); 477 col = 8; 478 } 479 printf(" \"%s\"", *cpp); 480 col += len; 481 } 482 printf("\n"); 483 return 0; 484 } 485 cpp = (char **)genget(name, telopts, sizeof(char *)); 486 if (Ambiguous(cpp)) { 487 fprintf(stderr,"'%s': ambiguous argument ('send %s ?' for help).\n", 488 name, cmd); 489 return 0; 490 } 491 if (cpp) { 492 val = cpp - telopts; 493 } else { 494 register char *cp = name; 495 496 while (*cp >= '0' && *cp <= '9') { 497 val *= 10; 498 val += *cp - '0'; 499 cp++; 500 } 501 if (*cp != 0) { 502 fprintf(stderr, "'%s': unknown argument ('send %s ?' for help).\n", 503 name, cmd); 504 return 0; 505 } else if (val < 0 || val > 255) { 506 fprintf(stderr, "'%s': bad value ('send %s ?' for help).\n", 507 name, cmd); 508 return 0; 509 } 510 } 511 if (!connected) { 512 printf("?Need to be connected first.\n"); 513 return 0; 514 } 515 (*func)(val, 1); 516 return 1; 517 } 518 519 static int 520 send_help(n) 521 char *n; 522 { 523 struct sendlist *s; /* pointer to current command */ 524 for (s = Sendlist; s->name; s++) { 525 if (s->help) 526 printf("%-15s %s\n", s->name, s->help); 527 } 528 return(0); 529 } 530 531 /* 532 * The following are the routines and data structures referred 533 * to by the arguments to the "toggle" command. 534 */ 535 536 static int 537 lclchars(n) 538 int n; 539 { 540 donelclchars = 1; 541 return 1; 542 } 543 544 static int 545 togdebug(n) 546 int n; 547 { 548 #ifndef NOT43 549 if (net > 0 && 550 (SetSockOpt(net, SOL_SOCKET, SO_DEBUG, debug)) < 0) { 551 perror("setsockopt (SO_DEBUG)"); 552 } 553 #else /* NOT43 */ 554 if (debug) { 555 if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) 556 perror("setsockopt (SO_DEBUG)"); 557 } else 558 printf("Cannot turn off socket debugging\n"); 559 #endif /* NOT43 */ 560 return 1; 561 } 562 563 564 static int 565 togcrlf(n) 566 int n; 567 { 568 if (crlf) { 569 printf("Will send carriage returns as telnet <CR><LF>.\n"); 570 } else { 571 printf("Will send carriage returns as telnet <CR><NUL>.\n"); 572 } 573 return 1; 574 } 575 576 int binmode; 577 578 static int 579 togbinary(val) 580 int val; 581 { 582 donebinarytoggle = 1; 583 584 if (val >= 0) { 585 binmode = val; 586 } else { 587 if (my_want_state_is_will(TELOPT_BINARY) && 588 my_want_state_is_do(TELOPT_BINARY)) { 589 binmode = 1; 590 } else if (my_want_state_is_wont(TELOPT_BINARY) && 591 my_want_state_is_dont(TELOPT_BINARY)) { 592 binmode = 0; 593 } 594 val = binmode ? 0 : 1; 595 } 596 597 if (val == 1) { 598 if (my_want_state_is_will(TELOPT_BINARY) && 599 my_want_state_is_do(TELOPT_BINARY)) { 600 printf("Already operating in binary mode with remote host.\n"); 601 } else { 602 printf("Negotiating binary mode with remote host.\n"); 603 tel_enter_binary(3); 604 } 605 } else { 606 if (my_want_state_is_wont(TELOPT_BINARY) && 607 my_want_state_is_dont(TELOPT_BINARY)) { 608 printf("Already in network ascii mode with remote host.\n"); 609 } else { 610 printf("Negotiating network ascii mode with remote host.\n"); 611 tel_leave_binary(3); 612 } 613 } 614 return 1; 615 } 616 617 static int 618 togrbinary(val) 619 int val; 620 { 621 donebinarytoggle = 1; 622 623 if (val == -1) 624 val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1; 625 626 if (val == 1) { 627 if (my_want_state_is_do(TELOPT_BINARY)) { 628 printf("Already receiving in binary mode.\n"); 629 } else { 630 printf("Negotiating binary mode on input.\n"); 631 tel_enter_binary(1); 632 } 633 } else { 634 if (my_want_state_is_dont(TELOPT_BINARY)) { 635 printf("Already receiving in network ascii mode.\n"); 636 } else { 637 printf("Negotiating network ascii mode on input.\n"); 638 tel_leave_binary(1); 639 } 640 } 641 return 1; 642 } 643 644 static int 645 togxbinary(val) 646 int val; 647 { 648 donebinarytoggle = 1; 649 650 if (val == -1) 651 val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1; 652 653 if (val == 1) { 654 if (my_want_state_is_will(TELOPT_BINARY)) { 655 printf("Already transmitting in binary mode.\n"); 656 } else { 657 printf("Negotiating binary mode on output.\n"); 658 tel_enter_binary(2); 659 } 660 } else { 661 if (my_want_state_is_wont(TELOPT_BINARY)) { 662 printf("Already transmitting in network ascii mode.\n"); 663 } else { 664 printf("Negotiating network ascii mode on output.\n"); 665 tel_leave_binary(2); 666 } 667 } 668 return 1; 669 } 670 671 672 struct togglelist { 673 char *name; /* name of toggle */ 674 char *help; /* help message */ 675 int (*handler) /* routine to do actual setting */ 676 P((int)); 677 int *variable; 678 char *actionexplanation; 679 }; 680 681 static struct togglelist Togglelist[] = { 682 { "autoflush", 683 "flushing of output when sending interrupt characters", 684 0, 685 &autoflush, 686 "flush output when sending interrupt characters" }, 687 { "autosynch", 688 "automatic sending of interrupt characters in urgent mode", 689 0, 690 &autosynch, 691 "send interrupt characters in urgent mode" }, 692 #if defined(AUTHENTICATION) 693 { "autologin", 694 "automatic sending of login and/or authentication info", 695 0, 696 &autologin, 697 "send login name and/or authentication information" }, 698 { "authdebug", 699 "Toggle authentication debugging", 700 auth_togdebug, 701 0, 702 "print authentication debugging information" }, 703 #endif 704 { "skiprc", 705 "don't read ~/.telnetrc file", 706 0, 707 &skiprc, 708 "skip reading of ~/.telnetrc file" }, 709 { "binary", 710 "sending and receiving of binary data", 711 togbinary, 712 0, 713 0 }, 714 { "inbinary", 715 "receiving of binary data", 716 togrbinary, 717 0, 718 0 }, 719 { "outbinary", 720 "sending of binary data", 721 togxbinary, 722 0, 723 0 }, 724 { "crlf", 725 "sending carriage returns as telnet <CR><LF>", 726 togcrlf, 727 &crlf, 728 0 }, 729 { "crmod", 730 "mapping of received carriage returns", 731 0, 732 &crmod, 733 "map carriage return on output" }, 734 { "localchars", 735 "local recognition of certain control characters", 736 lclchars, 737 &localchars, 738 "recognize certain control characters" }, 739 { " ", "", 0 }, /* empty line */ 740 #if defined(unix) && defined(TN3270) 741 { "apitrace", 742 "(debugging) toggle tracing of API transactions", 743 0, 744 &apitrace, 745 "trace API transactions" }, 746 { "cursesdata", 747 "(debugging) toggle printing of hexadecimal curses data", 748 0, 749 &cursesdata, 750 "print hexadecimal representation of curses data" }, 751 #endif /* defined(unix) && defined(TN3270) */ 752 { "debug", 753 "debugging", 754 togdebug, 755 &debug, 756 "turn on socket level debugging" }, 757 { "netdata", 758 "printing of hexadecimal network data (debugging)", 759 0, 760 &netdata, 761 "print hexadecimal representation of network traffic" }, 762 { "prettydump", 763 "output of \"netdata\" to user readable format (debugging)", 764 0, 765 &prettydump, 766 "print user readable output for \"netdata\"" }, 767 { "options", 768 "viewing of options processing (debugging)", 769 0, 770 &showoptions, 771 "show option processing" }, 772 #if defined(unix) 773 { "termdata", 774 "(debugging) toggle printing of hexadecimal terminal data", 775 0, 776 &termdata, 777 "print hexadecimal representation of terminal traffic" }, 778 #endif /* defined(unix) */ 779 { "?", 780 0, 781 togglehelp }, 782 { "help", 783 0, 784 togglehelp }, 785 { 0 } 786 }; 787 788 static int 789 togglehelp(n) 790 int n; 791 { 792 struct togglelist *c; 793 794 for (c = Togglelist; c->name; c++) { 795 if (c->help) { 796 if (*c->help) 797 printf("%-15s toggle %s\n", c->name, c->help); 798 else 799 printf("\n"); 800 } 801 } 802 printf("\n"); 803 printf("%-15s %s\n", "?", "display help information"); 804 return 0; 805 } 806 807 static void 808 settogglehelp(set) 809 int set; 810 { 811 struct togglelist *c; 812 813 for (c = Togglelist; c->name; c++) { 814 if (c->help) { 815 if (*c->help) 816 printf("%-15s %s %s\n", c->name, set ? "enable" : "disable", 817 c->help); 818 else 819 printf("\n"); 820 } 821 } 822 } 823 824 #define GETTOGGLE(name) (struct togglelist *) \ 825 genget(name, (char **) Togglelist, sizeof(struct togglelist)) 826 827 static int 828 toggle(argc, argv) 829 int argc; 830 char *argv[]; 831 { 832 int retval = 1; 833 char *name; 834 struct togglelist *c; 835 836 if (argc < 2) { 837 fprintf(stderr, 838 "Need an argument to 'toggle' command. 'toggle ?' for help.\n"); 839 return 0; 840 } 841 argc--; 842 argv++; 843 while (argc--) { 844 name = *argv++; 845 c = GETTOGGLE(name); 846 if (Ambiguous(c)) { 847 fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\n", 848 name); 849 return 0; 850 } else if (c == 0) { 851 fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\n", 852 name); 853 return 0; 854 } else { 855 if (c->variable) { 856 *c->variable = !*c->variable; /* invert it */ 857 if (c->actionexplanation) { 858 printf("%s %s.\n", *c->variable? "Will" : "Won't", 859 c->actionexplanation); 860 } 861 } 862 if (c->handler) { 863 retval &= (*c->handler)(-1); 864 } 865 } 866 } 867 return retval; 868 } 869 870 /* 871 * The following perform the "set" command. 872 */ 873 874 #ifdef USE_TERMIO 875 struct termio new_tc = { 0 }; 876 #endif 877 878 struct setlist { 879 char *name; /* name */ 880 char *help; /* help information */ 881 void (*handler) P((char *)); 882 cc_t *charp; /* where it is located at */ 883 }; 884 885 static struct setlist Setlist[] = { 886 #ifdef KLUDGELINEMODE 887 { "echo", "character to toggle local echoing on/off", 0, &echoc }, 888 #endif 889 { "escape", "character to escape back to telnet command mode", 0, &escape }, 890 { "rlogin", "rlogin escape character", 0, &rlogin }, 891 { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile}, 892 { " ", "" }, 893 { " ", "The following need 'localchars' to be toggled true", 0, 0 }, 894 { "flushoutput", "character to cause an Abort Output", 0, termFlushCharp }, 895 { "interrupt", "character to cause an Interrupt Process", 0, termIntCharp }, 896 { "quit", "character to cause an Abort process", 0, termQuitCharp }, 897 { "eof", "character to cause an EOF ", 0, termEofCharp }, 898 { " ", "" }, 899 { " ", "The following are for local editing in linemode", 0, 0 }, 900 { "erase", "character to use to erase a character", 0, termEraseCharp }, 901 { "kill", "character to use to erase a line", 0, termKillCharp }, 902 { "lnext", "character to use for literal next", 0, termLiteralNextCharp }, 903 { "susp", "character to cause a Suspend Process", 0, termSuspCharp }, 904 { "reprint", "character to use for line reprint", 0, termRprntCharp }, 905 { "worderase", "character to use to erase a word", 0, termWerasCharp }, 906 { "start", "character to use for XON", 0, termStartCharp }, 907 { "stop", "character to use for XOFF", 0, termStopCharp }, 908 { "forw1", "alternate end of line character", 0, termForw1Charp }, 909 { "forw2", "alternate end of line character", 0, termForw2Charp }, 910 { "ayt", "alternate AYT character", 0, termAytCharp }, 911 { 0 } 912 }; 913 914 #if defined(CRAY) && !defined(__STDC__) 915 /* Work around compiler bug in pcc 4.1.5 */ 916 void 917 _setlist_init() 918 { 919 #ifndef KLUDGELINEMODE 920 #define N 5 921 #else 922 #define N 6 923 #endif 924 Setlist[N+0].charp = &termFlushChar; 925 Setlist[N+1].charp = &termIntChar; 926 Setlist[N+2].charp = &termQuitChar; 927 Setlist[N+3].charp = &termEofChar; 928 Setlist[N+6].charp = &termEraseChar; 929 Setlist[N+7].charp = &termKillChar; 930 Setlist[N+8].charp = &termLiteralNextChar; 931 Setlist[N+9].charp = &termSuspChar; 932 Setlist[N+10].charp = &termRprntChar; 933 Setlist[N+11].charp = &termWerasChar; 934 Setlist[N+12].charp = &termStartChar; 935 Setlist[N+13].charp = &termStopChar; 936 Setlist[N+14].charp = &termForw1Char; 937 Setlist[N+15].charp = &termForw2Char; 938 Setlist[N+16].charp = &termAytChar; 939 #undef N 940 } 941 #endif /* defined(CRAY) && !defined(__STDC__) */ 942 943 static struct setlist * 944 getset(name) 945 char *name; 946 { 947 return (struct setlist *) 948 genget(name, (char **) Setlist, sizeof(struct setlist)); 949 } 950 951 void 952 set_escape_char(s) 953 char *s; 954 { 955 if (rlogin != _POSIX_VDISABLE) { 956 rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE; 957 printf("Telnet rlogin escape character is '%s'.\n", 958 control(rlogin)); 959 } else { 960 escape = (s && *s) ? special(s) : _POSIX_VDISABLE; 961 printf("Telnet escape character is '%s'.\n", control(escape)); 962 } 963 } 964 965 static int 966 setcmd(argc, argv) 967 int argc; 968 char *argv[]; 969 { 970 int value; 971 struct setlist *ct; 972 struct togglelist *c; 973 974 if (argc < 2 || argc > 3) { 975 printf("Format is 'set Name Value'\n'set ?' for help.\n"); 976 return 0; 977 } 978 if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) { 979 for (ct = Setlist; ct->name; ct++) 980 printf("%-15s %s\n", ct->name, ct->help); 981 printf("\n"); 982 settogglehelp(1); 983 printf("%-15s %s\n", "?", "display help information"); 984 return 0; 985 } 986 987 ct = getset(argv[1]); 988 if (ct == 0) { 989 c = GETTOGGLE(argv[1]); 990 if (c == 0) { 991 fprintf(stderr, "'%s': unknown argument ('set ?' for help).\n", 992 argv[1]); 993 return 0; 994 } else if (Ambiguous(c)) { 995 fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n", 996 argv[1]); 997 return 0; 998 } 999 if (c->variable) { 1000 if ((argc == 2) || (strcmp("on", argv[2]) == 0)) 1001 *c->variable = 1; 1002 else if (strcmp("off", argv[2]) == 0) 1003 *c->variable = 0; 1004 else { 1005 printf("Format is 'set togglename [on|off]'\n'set ?' for help.\n"); 1006 return 0; 1007 } 1008 if (c->actionexplanation) { 1009 printf("%s %s.\n", *c->variable? "Will" : "Won't", 1010 c->actionexplanation); 1011 } 1012 } 1013 if (c->handler) 1014 (*c->handler)(1); 1015 } else if (argc != 3) { 1016 printf("Format is 'set Name Value'\n'set ?' for help.\n"); 1017 return 0; 1018 } else if (Ambiguous(ct)) { 1019 fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n", 1020 argv[1]); 1021 return 0; 1022 } else if (ct->handler) { 1023 (*ct->handler)(argv[2]); 1024 printf("%s set to \"%s\".\n", ct->name, (char *)ct->charp); 1025 } else { 1026 if (strcmp("off", argv[2])) { 1027 value = special(argv[2]); 1028 } else { 1029 value = _POSIX_VDISABLE; 1030 } 1031 *(ct->charp) = (cc_t)value; 1032 printf("%s character is '%s'.\n", ct->name, control(*(ct->charp))); 1033 } 1034 slc_check(); 1035 return 1; 1036 } 1037 1038 static int 1039 unsetcmd(argc, argv) 1040 int argc; 1041 char *argv[]; 1042 { 1043 struct setlist *ct; 1044 struct togglelist *c; 1045 register char *name; 1046 1047 if (argc < 2) { 1048 fprintf(stderr, 1049 "Need an argument to 'unset' command. 'unset ?' for help.\n"); 1050 return 0; 1051 } 1052 if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) { 1053 for (ct = Setlist; ct->name; ct++) 1054 printf("%-15s %s\n", ct->name, ct->help); 1055 printf("\n"); 1056 settogglehelp(0); 1057 printf("%-15s %s\n", "?", "display help information"); 1058 return 0; 1059 } 1060 1061 argc--; 1062 argv++; 1063 while (argc--) { 1064 name = *argv++; 1065 ct = getset(name); 1066 if (ct == 0) { 1067 c = GETTOGGLE(name); 1068 if (c == 0) { 1069 fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\n", 1070 name); 1071 return 0; 1072 } else if (Ambiguous(c)) { 1073 fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n", 1074 name); 1075 return 0; 1076 } 1077 if (c->variable) { 1078 *c->variable = 0; 1079 if (c->actionexplanation) { 1080 printf("%s %s.\n", *c->variable? "Will" : "Won't", 1081 c->actionexplanation); 1082 } 1083 } 1084 if (c->handler) 1085 (*c->handler)(0); 1086 } else if (Ambiguous(ct)) { 1087 fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n", 1088 name); 1089 return 0; 1090 } else if (ct->handler) { 1091 (*ct->handler)(0); 1092 printf("%s reset to \"%s\".\n", ct->name, (char *)ct->charp); 1093 } else { 1094 *(ct->charp) = _POSIX_VDISABLE; 1095 printf("%s character is '%s'.\n", ct->name, control(*(ct->charp))); 1096 } 1097 } 1098 return 1; 1099 } 1100 1101 /* 1102 * The following are the data structures and routines for the 1103 * 'mode' command. 1104 */ 1105 #ifdef KLUDGELINEMODE 1106 extern int kludgelinemode; 1107 1108 static int 1109 dokludgemode(n) 1110 int n; 1111 { 1112 kludgelinemode = 1; 1113 send_wont(TELOPT_LINEMODE, 1); 1114 send_dont(TELOPT_SGA, 1); 1115 send_dont(TELOPT_ECHO, 1); 1116 return 1; 1117 } 1118 #endif 1119 1120 static int 1121 dolinemode(n) 1122 int n; 1123 { 1124 #ifdef KLUDGELINEMODE 1125 if (kludgelinemode) 1126 send_dont(TELOPT_SGA, 1); 1127 #endif 1128 send_will(TELOPT_LINEMODE, 1); 1129 send_dont(TELOPT_ECHO, 1); 1130 return 1; 1131 } 1132 1133 static int 1134 docharmode(n) 1135 int n; 1136 { 1137 #ifdef KLUDGELINEMODE 1138 if (kludgelinemode) 1139 send_do(TELOPT_SGA, 1); 1140 else 1141 #endif 1142 send_wont(TELOPT_LINEMODE, 1); 1143 send_do(TELOPT_ECHO, 1); 1144 return 1; 1145 } 1146 1147 static int 1148 dolmmode(bit, on) 1149 int bit, on; 1150 { 1151 unsigned char c; 1152 extern int linemode; 1153 1154 if (my_want_state_is_wont(TELOPT_LINEMODE)) { 1155 printf("?Need to have LINEMODE option enabled first.\n"); 1156 printf("'mode ?' for help.\n"); 1157 return 0; 1158 } 1159 1160 if (on) 1161 c = (linemode | bit); 1162 else 1163 c = (linemode & ~bit); 1164 lm_mode(&c, 1, 1); 1165 return 1; 1166 } 1167 1168 int 1169 set_mode(bit) 1170 int bit; 1171 { 1172 return dolmmode(bit, 1); 1173 } 1174 1175 int 1176 clear_mode(bit) 1177 int bit; 1178 { 1179 return dolmmode(bit, 0); 1180 } 1181 1182 struct modelist { 1183 char *name; /* command name */ 1184 char *help; /* help string */ 1185 int (*handler) /* routine which executes command */ 1186 P((int)); 1187 int needconnect; /* Do we need to be connected to execute? */ 1188 int arg1; 1189 }; 1190 1191 static struct modelist ModeList[] = { 1192 { "character", "Disable LINEMODE option", docharmode, 1 }, 1193 #ifdef KLUDGELINEMODE 1194 { "", "(or disable obsolete line-by-line mode)", 0 }, 1195 #endif 1196 { "line", "Enable LINEMODE option", dolinemode, 1 }, 1197 #ifdef KLUDGELINEMODE 1198 { "", "(or enable obsolete line-by-line mode)", 0 }, 1199 #endif 1200 { "", "", 0 }, 1201 { "", "These require the LINEMODE option to be enabled", 0 }, 1202 { "isig", "Enable signal trapping", set_mode, 1, MODE_TRAPSIG }, 1203 { "+isig", 0, set_mode, 1, MODE_TRAPSIG }, 1204 { "-isig", "Disable signal trapping", clear_mode, 1, MODE_TRAPSIG }, 1205 { "edit", "Enable character editing", set_mode, 1, MODE_EDIT }, 1206 { "+edit", 0, set_mode, 1, MODE_EDIT }, 1207 { "-edit", "Disable character editing", clear_mode, 1, MODE_EDIT }, 1208 { "softtabs", "Enable tab expansion", set_mode, 1, MODE_SOFT_TAB }, 1209 { "+softtabs", 0, set_mode, 1, MODE_SOFT_TAB }, 1210 { "-softtabs", "Disable character editing", clear_mode, 1, MODE_SOFT_TAB }, 1211 { "litecho", "Enable literal character echo", set_mode, 1, MODE_LIT_ECHO }, 1212 { "+litecho", 0, set_mode, 1, MODE_LIT_ECHO }, 1213 { "-litecho", "Disable literal character echo", clear_mode, 1, MODE_LIT_ECHO }, 1214 { "help", 0, modehelp, 0 }, 1215 #ifdef KLUDGELINEMODE 1216 { "kludgeline", 0, dokludgemode, 1 }, 1217 #endif 1218 { "", "", 0 }, 1219 { "?", "Print help information", modehelp, 0 }, 1220 { 0 }, 1221 }; 1222 1223 1224 int 1225 modehelp(n) 1226 int n; 1227 { 1228 struct modelist *mt; 1229 1230 printf("format is: 'mode Mode', where 'Mode' is one of:\n\n"); 1231 for (mt = ModeList; mt->name; mt++) { 1232 if (mt->help) { 1233 if (*mt->help) 1234 printf("%-15s %s\n", mt->name, mt->help); 1235 else 1236 printf("\n"); 1237 } 1238 } 1239 return 0; 1240 } 1241 1242 #define GETMODECMD(name) (struct modelist *) \ 1243 genget(name, (char **) ModeList, sizeof(struct modelist)) 1244 1245 static int 1246 modecmd(argc, argv) 1247 int argc; 1248 char *argv[]; 1249 { 1250 struct modelist *mt; 1251 1252 if (argc != 2) { 1253 printf("'mode' command requires an argument\n"); 1254 printf("'mode ?' for help.\n"); 1255 } else if ((mt = GETMODECMD(argv[1])) == 0) { 1256 fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\n", argv[1]); 1257 } else if (Ambiguous(mt)) { 1258 fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\n", argv[1]); 1259 } else if (mt->needconnect && !connected) { 1260 printf("?Need to be connected first.\n"); 1261 printf("'mode ?' for help.\n"); 1262 } else if (mt->handler) { 1263 return (*mt->handler)(mt->arg1); 1264 } 1265 return 0; 1266 } 1267 1268 /* 1269 * The following data structures and routines implement the 1270 * "display" command. 1271 */ 1272 1273 static int 1274 display(argc, argv) 1275 int argc; 1276 char *argv[]; 1277 { 1278 struct togglelist *tl; 1279 struct setlist *sl; 1280 1281 #define dotog(tl) if (tl->variable && tl->actionexplanation) { \ 1282 if (*tl->variable) { \ 1283 printf("will"); \ 1284 } else { \ 1285 printf("won't"); \ 1286 } \ 1287 printf(" %s.\n", tl->actionexplanation); \ 1288 } 1289 1290 #define doset(sl) if (sl->name && *sl->name != ' ') { \ 1291 if (sl->handler == 0) \ 1292 printf("%-15s [%s]\n", sl->name, control(*sl->charp)); \ 1293 else \ 1294 printf("%-15s \"%s\"\n", sl->name, (char *)sl->charp); \ 1295 } 1296 1297 if (argc == 1) { 1298 for (tl = Togglelist; tl->name; tl++) { 1299 dotog(tl); 1300 } 1301 printf("\n"); 1302 for (sl = Setlist; sl->name; sl++) { 1303 doset(sl); 1304 } 1305 } else { 1306 int i; 1307 1308 for (i = 1; i < argc; i++) { 1309 sl = getset(argv[i]); 1310 tl = GETTOGGLE(argv[i]); 1311 if (Ambiguous(sl) || Ambiguous(tl)) { 1312 printf("?Ambiguous argument '%s'.\n", argv[i]); 1313 return 0; 1314 } else if (!sl && !tl) { 1315 printf("?Unknown argument '%s'.\n", argv[i]); 1316 return 0; 1317 } else { 1318 if (tl) { 1319 dotog(tl); 1320 } 1321 if (sl) { 1322 doset(sl); 1323 } 1324 } 1325 } 1326 } 1327 /*@*/optionstatus(); 1328 return 1; 1329 #undef doset 1330 #undef dotog 1331 } 1332 1333 /* 1334 * The following are the data structures, and many of the routines, 1335 * relating to command processing. 1336 */ 1337 1338 /* 1339 * Set the escape character. 1340 */ 1341 static int 1342 setescape(argc, argv) 1343 int argc; 1344 char *argv[]; 1345 { 1346 register char *arg; 1347 char buf[50]; 1348 1349 printf( 1350 "Deprecated usage - please use 'set escape%s%s' in the future.\n", 1351 (argc > 2)? " ":"", (argc > 2)? argv[1]: ""); 1352 if (argc > 2) 1353 arg = argv[1]; 1354 else { 1355 printf("new escape character: "); 1356 (void) fgets(buf, sizeof(buf), stdin); 1357 arg = buf; 1358 } 1359 if (arg[0] != '\0') 1360 escape = arg[0]; 1361 if (!In3270) { 1362 printf("Escape character is '%s'.\n", control(escape)); 1363 } 1364 (void) fflush(stdout); 1365 return 1; 1366 } 1367 1368 /*VARARGS*/ 1369 static int 1370 togcrmod(argc, argv) 1371 int argc; 1372 char *argv[]; 1373 { 1374 crmod = !crmod; 1375 printf("Deprecated usage - please use 'toggle crmod' in the future.\n"); 1376 printf("%s map carriage return on output.\n", crmod ? "Will" : "Won't"); 1377 (void) fflush(stdout); 1378 return 1; 1379 } 1380 1381 /*VARARGS*/ 1382 int 1383 suspend(argc, argv) 1384 int argc; 1385 char *argv[]; 1386 { 1387 #ifdef SIGTSTP 1388 setcommandmode(); 1389 { 1390 long oldrows, oldcols, newrows, newcols, err; 1391 1392 err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 1393 (void) kill(0, SIGTSTP); 1394 /* 1395 * If we didn't get the window size before the SUSPEND, but we 1396 * can get them now (?), then send the NAWS to make sure that 1397 * we are set up for the right window size. 1398 */ 1399 if (TerminalWindowSize(&newrows, &newcols) && connected && 1400 (err || ((oldrows != newrows) || (oldcols != newcols)))) { 1401 sendnaws(); 1402 } 1403 } 1404 /* reget parameters in case they were changed */ 1405 TerminalSaveState(); 1406 setconnmode(0); 1407 #else 1408 printf("Suspend is not supported. Try the '!' command instead\n"); 1409 #endif 1410 return 1; 1411 } 1412 1413 #if !defined(TN3270) 1414 /*ARGSUSED*/ 1415 int 1416 shell(argc, argv) 1417 int argc; 1418 char *argv[]; 1419 { 1420 long oldrows, oldcols, newrows, newcols, err; 1421 1422 #ifdef __GNUC__ 1423 (void) &err; /* XXX avoid GCC warning */ 1424 #endif 1425 1426 setcommandmode(); 1427 1428 err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 1429 switch(vfork()) { 1430 case -1: 1431 perror("Fork failed\n"); 1432 break; 1433 1434 case 0: 1435 { 1436 /* 1437 * Fire up the shell in the child. 1438 */ 1439 register char *shellp, *shellname; 1440 1441 shellp = getenv("SHELL"); 1442 if (shellp == NULL) 1443 shellp = "/bin/sh"; 1444 if ((shellname = strrchr(shellp, '/')) == 0) 1445 shellname = shellp; 1446 else 1447 shellname++; 1448 if (argc > 1) 1449 execl(shellp, shellname, "-c", &saveline[1], 0); 1450 else 1451 execl(shellp, shellname, 0); 1452 perror("Execl"); 1453 _exit(1); 1454 } 1455 default: 1456 (void)wait((int *)0); /* Wait for the shell to complete */ 1457 1458 if (TerminalWindowSize(&newrows, &newcols) && connected && 1459 (err || ((oldrows != newrows) || (oldcols != newcols)))) { 1460 sendnaws(); 1461 } 1462 break; 1463 } 1464 return 1; 1465 } 1466 #endif /* !defined(TN3270) */ 1467 1468 /*VARARGS*/ 1469 static int 1470 bye(argc, argv) 1471 int argc; /* Number of arguments */ 1472 char *argv[]; /* arguments */ 1473 { 1474 extern int resettermname; 1475 1476 if (connected) { 1477 (void) shutdown(net, 2); 1478 printf("Connection closed.\n"); 1479 (void) NetClose(net); 1480 connected = 0; 1481 resettermname = 1; 1482 #if defined(AUTHENTICATION) 1483 auth_encrypt_connect(connected); 1484 #endif /* defined(AUTHENTICATION) */ 1485 /* reset options */ 1486 tninit(); 1487 #if defined(TN3270) 1488 SetIn3270(); /* Get out of 3270 mode */ 1489 #endif /* defined(TN3270) */ 1490 } 1491 if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) { 1492 longjmp(toplevel, 1); 1493 /* NOTREACHED */ 1494 } 1495 return 1; /* Keep lint, etc., happy */ 1496 } 1497 1498 /*VARARGS*/ 1499 int 1500 quit(argc, argv) 1501 int argc; 1502 char *argv[]; 1503 { 1504 (void) call(bye, "bye", "fromquit", 0); 1505 Exit(0); 1506 /*NOTREACHED*/ 1507 } 1508 1509 /*VARARGS*/ 1510 int 1511 logout(argc, argv) 1512 int argc; 1513 char *argv[]; 1514 { 1515 send_do(TELOPT_LOGOUT, 1); 1516 (void) netflush(); 1517 return 1; 1518 } 1519 1520 1521 /* 1522 * The SLC command. 1523 */ 1524 1525 struct slclist { 1526 char *name; 1527 char *help; 1528 void (*handler) P((int)); 1529 int arg; 1530 }; 1531 1532 struct slclist SlcList[] = { 1533 { "export", "Use local special character definitions", 1534 slc_mode_export, 0 }, 1535 { "import", "Use remote special character definitions", 1536 slc_mode_import, 1 }, 1537 { "check", "Verify remote special character definitions", 1538 slc_mode_import, 0 }, 1539 { "help", 0, slc_help, 0 }, 1540 { "?", "Print help information", slc_help, 0 }, 1541 { 0 }, 1542 }; 1543 1544 static void 1545 slc_help(n) 1546 int n; 1547 { 1548 struct slclist *c; 1549 1550 for (c = SlcList; c->name; c++) { 1551 if (c->help) { 1552 if (*c->help) 1553 printf("%-15s %s\n", c->name, c->help); 1554 else 1555 printf("\n"); 1556 } 1557 } 1558 } 1559 1560 static struct slclist * 1561 getslc(name) 1562 char *name; 1563 { 1564 return (struct slclist *) 1565 genget(name, (char **) SlcList, sizeof(struct slclist)); 1566 } 1567 1568 static int 1569 slccmd(argc, argv) 1570 int argc; 1571 char *argv[]; 1572 { 1573 struct slclist *c; 1574 1575 if (argc != 2) { 1576 fprintf(stderr, 1577 "Need an argument to 'slc' command. 'slc ?' for help.\n"); 1578 return 0; 1579 } 1580 c = getslc(argv[1]); 1581 if (c == 0) { 1582 fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\n", 1583 argv[1]); 1584 return 0; 1585 } 1586 if (Ambiguous(c)) { 1587 fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\n", 1588 argv[1]); 1589 return 0; 1590 } 1591 (*c->handler)(c->arg); 1592 slcstate(); 1593 return 1; 1594 } 1595 1596 /* 1597 * The ENVIRON command. 1598 */ 1599 1600 struct envlist { 1601 char *name; 1602 char *help; 1603 struct env_lst *(*handler) P((unsigned char *, unsigned char *)); 1604 int narg; 1605 }; 1606 1607 struct envlist EnvList[] = { 1608 { "define", "Define an environment variable", 1609 env_define, 2 }, 1610 { "undefine", "Undefine an environment variable", 1611 env_undefine, 1 }, 1612 { "export", "Mark an environment variable for automatic export", 1613 env_export, 1 }, 1614 { "unexport", "Don't mark an environment variable for automatic export", 1615 env_unexport, 1 }, 1616 { "send", "Send an environment variable", env_send, 1 }, 1617 { "list", "List the current environment variables", 1618 env_list, 0 }, 1619 #if defined(OLD_ENVIRON) && defined(ENV_HACK) 1620 { "varval", "Reverse VAR and VALUE (auto, right, wrong, status)", 1621 env_varval, 1 }, 1622 #endif 1623 { "help", 0, env_help, 0 }, 1624 { "?", "Print help information", env_help, 0 }, 1625 { 0 }, 1626 }; 1627 1628 static struct env_lst * 1629 env_help(us1, us2) 1630 unsigned char *us1, *us2; 1631 { 1632 struct envlist *c; 1633 1634 for (c = EnvList; c->name; c++) { 1635 if (c->help) { 1636 if (*c->help) 1637 printf("%-15s %s\n", c->name, c->help); 1638 else 1639 printf("\n"); 1640 } 1641 } 1642 return NULL; 1643 } 1644 1645 static struct envlist * 1646 getenvcmd(name) 1647 char *name; 1648 { 1649 return (struct envlist *) 1650 genget(name, (char **) EnvList, sizeof(struct envlist)); 1651 } 1652 1653 int 1654 env_cmd(argc, argv) 1655 int argc; 1656 char *argv[]; 1657 { 1658 struct envlist *c; 1659 1660 if (argc < 2) { 1661 fprintf(stderr, 1662 "Need an argument to 'environ' command. 'environ ?' for help.\n"); 1663 return 0; 1664 } 1665 c = getenvcmd(argv[1]); 1666 if (c == 0) { 1667 fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\n", 1668 argv[1]); 1669 return 0; 1670 } 1671 if (Ambiguous(c)) { 1672 fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\n", 1673 argv[1]); 1674 return 0; 1675 } 1676 if (c->narg + 2 != argc) { 1677 fprintf(stderr, 1678 "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\n", 1679 c->narg < argc + 2 ? "only " : "", 1680 c->narg, c->narg == 1 ? "" : "s", c->name); 1681 return 0; 1682 } 1683 (*c->handler)(argv[2], argv[3]); 1684 return 1; 1685 } 1686 1687 struct env_lst { 1688 struct env_lst *next; /* pointer to next structure */ 1689 struct env_lst *prev; /* pointer to previous structure */ 1690 unsigned char *var; /* pointer to variable name */ 1691 unsigned char *value; /* pointer to variable value */ 1692 int export; /* 1 -> export with default list of variables */ 1693 int welldefined; /* A well defined variable */ 1694 }; 1695 1696 struct env_lst envlisthead; 1697 1698 struct env_lst * 1699 env_find(var) 1700 unsigned char *var; 1701 { 1702 register struct env_lst *ep; 1703 1704 for (ep = envlisthead.next; ep; ep = ep->next) { 1705 if (strcmp((char *)ep->var, (char *)var) == 0) 1706 return(ep); 1707 } 1708 return(NULL); 1709 } 1710 1711 void 1712 env_init() 1713 { 1714 extern char **environ; 1715 register char **epp, *cp; 1716 register struct env_lst *ep; 1717 1718 for (epp = environ; *epp; epp++) { 1719 if ((cp = strchr(*epp, '=')) != NULL) { 1720 *cp = '\0'; 1721 ep = env_define((unsigned char *)*epp, 1722 (unsigned char *)cp+1); 1723 ep->export = 0; 1724 *cp = '='; 1725 } 1726 } 1727 /* 1728 * Special case for DISPLAY variable. If it is ":0.0" or 1729 * "unix:0.0", we have to get rid of "unix" and insert our 1730 * hostname. 1731 */ 1732 if ((ep = env_find("DISPLAY")) 1733 && ((*ep->value == ':') 1734 || (strncmp((char *)ep->value, "unix:", 5) == 0))) { 1735 char hbuf[256+1]; 1736 char *cp2 = strchr((char *)ep->value, ':'); 1737 1738 gethostname(hbuf, 256); 1739 hbuf[256] = '\0'; 1740 cp = (char *)malloc(strlen(hbuf) + strlen(cp2) + 1); 1741 sprintf((char *)cp, "%s%s", hbuf, cp2); 1742 free(ep->value); 1743 ep->value = (unsigned char *)cp; 1744 } 1745 /* 1746 * If USER is not defined, but LOGNAME is, then add 1747 * USER with the value from LOGNAME. By default, we 1748 * don't export the USER variable. 1749 */ 1750 if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) { 1751 env_define((unsigned char *)"USER", ep->value); 1752 env_unexport((unsigned char *)"USER", NULL); 1753 } 1754 env_export((unsigned char *)"DISPLAY", NULL); 1755 env_export((unsigned char *)"PRINTER", NULL); 1756 } 1757 1758 struct env_lst * 1759 env_define(var, value) 1760 unsigned char *var, *value; 1761 { 1762 register struct env_lst *ep; 1763 1764 if ((ep = env_find(var)) != NULL) { 1765 if (ep->var) 1766 free(ep->var); 1767 if (ep->value) 1768 free(ep->value); 1769 } else { 1770 ep = (struct env_lst *)malloc(sizeof(struct env_lst)); 1771 ep->next = envlisthead.next; 1772 envlisthead.next = ep; 1773 ep->prev = &envlisthead; 1774 if (ep->next) 1775 ep->next->prev = ep; 1776 } 1777 ep->welldefined = opt_welldefined(var); 1778 ep->export = 1; 1779 ep->var = (unsigned char *)strdup((char *)var); 1780 ep->value = (unsigned char *)strdup((char *)value); 1781 return(ep); 1782 } 1783 1784 struct env_lst * 1785 env_undefine(var, d) 1786 unsigned char *var; 1787 unsigned char *d; 1788 { 1789 register struct env_lst *ep; 1790 1791 if ((ep = env_find(var)) != NULL) { 1792 ep->prev->next = ep->next; 1793 if (ep->next) 1794 ep->next->prev = ep->prev; 1795 if (ep->var) 1796 free(ep->var); 1797 if (ep->value) 1798 free(ep->value); 1799 free(ep); 1800 } 1801 return NULL; 1802 } 1803 1804 struct env_lst * 1805 env_export(var, d) 1806 unsigned char *var; 1807 unsigned char *d; 1808 { 1809 register struct env_lst *ep; 1810 1811 if ((ep = env_find(var)) != NULL) 1812 ep->export = 1; 1813 return NULL; 1814 } 1815 1816 struct env_lst * 1817 env_unexport(var, d) 1818 unsigned char *var; 1819 unsigned char *d; 1820 { 1821 register struct env_lst *ep; 1822 1823 if ((ep = env_find(var)) != NULL) 1824 ep->export = 0; 1825 return NULL; 1826 } 1827 1828 struct env_lst * 1829 env_send(var, d) 1830 unsigned char *var; 1831 unsigned char *d; 1832 { 1833 register struct env_lst *ep; 1834 1835 if (my_state_is_wont(TELOPT_NEW_ENVIRON) 1836 #ifdef OLD_ENVIRON 1837 && my_state_is_wont(TELOPT_OLD_ENVIRON) 1838 #endif 1839 ) { 1840 fprintf(stderr, 1841 "Cannot send '%s': Telnet ENVIRON option not enabled\n", 1842 var); 1843 return NULL; 1844 } 1845 ep = env_find(var); 1846 if (ep == 0) { 1847 fprintf(stderr, "Cannot send '%s': variable not defined\n", 1848 var); 1849 return NULL; 1850 } 1851 env_opt_start_info(); 1852 env_opt_add(ep->var); 1853 env_opt_end(0); 1854 return NULL; 1855 } 1856 1857 struct env_lst * 1858 env_list(d1, d2) 1859 unsigned char *d1, *d2; 1860 { 1861 register struct env_lst *ep; 1862 1863 for (ep = envlisthead.next; ep; ep = ep->next) { 1864 printf("%c %-20s %s\n", ep->export ? '*' : ' ', 1865 ep->var, ep->value); 1866 } 1867 return NULL; 1868 } 1869 1870 unsigned char * 1871 env_default(init, welldefined) 1872 int init; 1873 { 1874 static struct env_lst *nep = NULL; 1875 1876 if (init) { 1877 nep = &envlisthead; 1878 return NULL; 1879 } 1880 if (nep) { 1881 while ((nep = nep->next) != NULL) { 1882 if (nep->export && (nep->welldefined == welldefined)) 1883 return(nep->var); 1884 } 1885 } 1886 return(NULL); 1887 } 1888 1889 unsigned char * 1890 env_getvalue(var) 1891 unsigned char *var; 1892 { 1893 register struct env_lst *ep; 1894 1895 if ((ep = env_find(var)) != NULL) 1896 return(ep->value); 1897 return(NULL); 1898 } 1899 1900 #if defined(OLD_ENVIRON) && defined(ENV_HACK) 1901 void 1902 env_varval(what) 1903 unsigned char *what; 1904 { 1905 extern int old_env_var, old_env_value, env_auto; 1906 int len = strlen((char *)what); 1907 1908 if (len == 0) 1909 goto unknown; 1910 1911 if (strncasecmp((char *)what, "status", len) == 0) { 1912 if (env_auto) 1913 printf("%s%s", "VAR and VALUE are/will be ", 1914 "determined automatically\n"); 1915 if (old_env_var == OLD_ENV_VAR) 1916 printf("VAR and VALUE set to correct definitions\n"); 1917 else 1918 printf("VAR and VALUE definitions are reversed\n"); 1919 } else if (strncasecmp((char *)what, "auto", len) == 0) { 1920 env_auto = 1; 1921 old_env_var = OLD_ENV_VALUE; 1922 old_env_value = OLD_ENV_VAR; 1923 } else if (strncasecmp((char *)what, "right", len) == 0) { 1924 env_auto = 0; 1925 old_env_var = OLD_ENV_VAR; 1926 old_env_value = OLD_ENV_VALUE; 1927 } else if (strncasecmp((char *)what, "wrong", len) == 0) { 1928 env_auto = 0; 1929 old_env_var = OLD_ENV_VALUE; 1930 old_env_value = OLD_ENV_VAR; 1931 } else { 1932 unknown: 1933 printf("Unknown \"varval\" command. (\"auto\", \"right\", \"wrong\", \"status\")\n"); 1934 } 1935 } 1936 #endif 1937 1938 #if defined(AUTHENTICATION) 1939 /* 1940 * The AUTHENTICATE command. 1941 */ 1942 1943 struct authlist { 1944 char *name; 1945 char *help; 1946 int (*handler)(); 1947 int narg; 1948 }; 1949 1950 extern int 1951 auth_enable P((char *)), 1952 auth_disable P((char *)), 1953 auth_status P((void)); 1954 static int 1955 auth_help P((void)); 1956 1957 struct authlist AuthList[] = { 1958 { "status", "Display current status of authentication information", 1959 auth_status, 0 }, 1960 { "disable", "Disable an authentication type ('auth disable ?' for more)", 1961 auth_disable, 1 }, 1962 { "enable", "Enable an authentication type ('auth enable ?' for more)", 1963 auth_enable, 1 }, 1964 { "help", 0, auth_help, 0 }, 1965 { "?", "Print help information", auth_help, 0 }, 1966 { 0 }, 1967 }; 1968 1969 static int 1970 auth_help() 1971 { 1972 struct authlist *c; 1973 1974 for (c = AuthList; c->name; c++) { 1975 if (c->help) { 1976 if (*c->help) 1977 printf("%-15s %s\n", c->name, c->help); 1978 else 1979 printf("\n"); 1980 } 1981 } 1982 return 0; 1983 } 1984 1985 auth_cmd(argc, argv) 1986 int argc; 1987 char *argv[]; 1988 { 1989 struct authlist *c; 1990 1991 if (argc < 2) { 1992 fprintf(stderr, 1993 "Need an argument to 'auth' command. 'auth ?' for help.\n"); 1994 return 0; 1995 } 1996 1997 c = (struct authlist *) 1998 genget(argv[1], (char **) AuthList, sizeof(struct authlist)); 1999 if (c == 0) { 2000 fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\n", 2001 argv[1]); 2002 return 0; 2003 } 2004 if (Ambiguous(c)) { 2005 fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\n", 2006 argv[1]); 2007 return 0; 2008 } 2009 if (c->narg + 2 != argc) { 2010 fprintf(stderr, 2011 "Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\n", 2012 c->narg < argc + 2 ? "only " : "", 2013 c->narg, c->narg == 1 ? "" : "s", c->name); 2014 return 0; 2015 } 2016 return((*c->handler)(argv[2], argv[3])); 2017 } 2018 #endif 2019 2020 2021 #if defined(unix) && defined(TN3270) 2022 static void 2023 filestuff(fd) 2024 int fd; 2025 { 2026 int res; 2027 2028 #ifdef F_GETOWN 2029 setconnmode(0); 2030 res = fcntl(fd, F_GETOWN, 0); 2031 setcommandmode(); 2032 2033 if (res == -1) { 2034 perror("fcntl"); 2035 return; 2036 } 2037 printf("\tOwner is %d.\n", res); 2038 #endif 2039 2040 setconnmode(0); 2041 res = fcntl(fd, F_GETFL, 0); 2042 setcommandmode(); 2043 2044 if (res == -1) { 2045 perror("fcntl"); 2046 return; 2047 } 2048 #ifdef notdef 2049 printf("\tFlags are 0x%x: %s\n", res, decodeflags(res)); 2050 #endif 2051 } 2052 #endif /* defined(unix) && defined(TN3270) */ 2053 2054 /* 2055 * Print status about the connection. 2056 */ 2057 /*ARGSUSED*/ 2058 static int 2059 status(argc, argv) 2060 int argc; 2061 char *argv[]; 2062 { 2063 if (connected) { 2064 printf("Connected to %s.\n", hostname); 2065 if ((argc < 2) || strcmp(argv[1], "notmuch")) { 2066 int mode = getconnmode(); 2067 2068 if (my_want_state_is_will(TELOPT_LINEMODE)) { 2069 printf("Operating with LINEMODE option\n"); 2070 printf("%s line editing\n", (mode&MODE_EDIT) ? "Local" : "No"); 2071 printf("%s catching of signals\n", 2072 (mode&MODE_TRAPSIG) ? "Local" : "No"); 2073 slcstate(); 2074 #ifdef KLUDGELINEMODE 2075 } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) { 2076 printf("Operating in obsolete linemode\n"); 2077 #endif 2078 } else { 2079 printf("Operating in single character mode\n"); 2080 if (localchars) 2081 printf("Catching signals locally\n"); 2082 } 2083 printf("%s character echo\n", (mode&MODE_ECHO) ? "Local" : "Remote"); 2084 if (my_want_state_is_will(TELOPT_LFLOW)) 2085 printf("%s flow control\n", (mode&MODE_FLOW) ? "Local" : "No"); 2086 } 2087 } else { 2088 printf("No connection.\n"); 2089 } 2090 # if !defined(TN3270) 2091 printf("Escape character is '%s'.\n", control(escape)); 2092 (void) fflush(stdout); 2093 # else /* !defined(TN3270) */ 2094 if ((!In3270) && ((argc < 2) || strcmp(argv[1], "notmuch"))) { 2095 printf("Escape character is '%s'.\n", control(escape)); 2096 } 2097 # if defined(unix) 2098 if ((argc >= 2) && !strcmp(argv[1], "everything")) { 2099 printf("SIGIO received %d time%s.\n", 2100 sigiocount, (sigiocount == 1)? "":"s"); 2101 if (In3270) { 2102 printf("Process ID %d, process group %d.\n", 2103 getpid(), getpgrp()); 2104 printf("Terminal input:\n"); 2105 filestuff(tin); 2106 printf("Terminal output:\n"); 2107 filestuff(tout); 2108 printf("Network socket:\n"); 2109 filestuff(net); 2110 } 2111 } 2112 if (In3270 && transcom) { 2113 printf("Transparent mode command is '%s'.\n", transcom); 2114 } 2115 # endif /* defined(unix) */ 2116 (void) fflush(stdout); 2117 if (In3270) { 2118 return 0; 2119 } 2120 # endif /* defined(TN3270) */ 2121 return 1; 2122 } 2123 2124 #ifdef SIGINFO 2125 /* 2126 * Function that gets called when SIGINFO is received. 2127 */ 2128 int 2129 ayt_status() 2130 { 2131 return call(status, "status", "notmuch", 0); 2132 } 2133 #endif 2134 2135 int 2136 tn(argc, argv) 2137 int argc; 2138 char *argv[]; 2139 { 2140 register struct hostent *host = 0; 2141 struct sockaddr_in sin; 2142 struct servent *sp = 0; 2143 unsigned long temp; 2144 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2145 char *srp = 0; 2146 unsigned long srlen; 2147 #endif 2148 char *cmd, *hostp = 0, *portp = 0, *user = 0; 2149 #ifdef __GNUC__ /* Avoid vfork clobbering */ 2150 (void) &user; 2151 #endif 2152 2153 /* clear the socket address prior to use */ 2154 memset((char *)&sin, 0, sizeof(sin)); 2155 2156 if (connected) { 2157 printf("?Already connected to %s\n", hostname); 2158 setuid(getuid()); 2159 return 0; 2160 } 2161 if (argc < 2) { 2162 (void) strcpy(line, "open "); 2163 printf("(to) "); 2164 (void) fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin); 2165 makeargv(); 2166 argc = margc; 2167 argv = margv; 2168 } 2169 cmd = *argv; 2170 --argc; ++argv; 2171 while (argc) { 2172 if (strcmp(*argv, "help") == 0 || isprefix(*argv, "?")) 2173 goto usage; 2174 if (strcmp(*argv, "-l") == 0) { 2175 --argc; ++argv; 2176 if (argc == 0) 2177 goto usage; 2178 user = *argv++; 2179 --argc; 2180 continue; 2181 } 2182 if (strcmp(*argv, "-a") == 0) { 2183 --argc; ++argv; 2184 autologin = 1; 2185 continue; 2186 } 2187 if (hostp == 0) { 2188 hostp = *argv++; 2189 --argc; 2190 continue; 2191 } 2192 if (portp == 0) { 2193 portp = *argv++; 2194 --argc; 2195 continue; 2196 } 2197 usage: 2198 printf("usage: %s [-l user] [-a] host-name [port]\n", cmd); 2199 setuid(getuid()); 2200 return 0; 2201 } 2202 if (hostp == 0) 2203 goto usage; 2204 2205 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2206 if (hostp[0] == '@' || hostp[0] == '!') { 2207 if ((hostname = strrchr(hostp, ':')) == NULL) 2208 hostname = strrchr(hostp, '@'); 2209 hostname++; 2210 srp = 0; 2211 temp = sourceroute(hostp, &srp, &srlen); 2212 if (temp == 0) { 2213 herror(srp); 2214 setuid(getuid()); 2215 return 0; 2216 } else if (temp == -1) { 2217 printf("Bad source route option: %s\n", hostp); 2218 setuid(getuid()); 2219 return 0; 2220 } else { 2221 sin.sin_addr.s_addr = temp; 2222 sin.sin_family = AF_INET; 2223 } 2224 } else { 2225 #endif 2226 temp = inet_addr(hostp); 2227 if (temp != INADDR_NONE) { 2228 sin.sin_addr.s_addr = temp; 2229 sin.sin_family = AF_INET; 2230 host = gethostbyaddr((char *)&temp, sizeof(temp), AF_INET); 2231 if (host) 2232 (void) strcpy(_hostname, host->h_name); 2233 else 2234 (void) strcpy(_hostname, hostp); 2235 hostname = _hostname; 2236 } else { 2237 host = gethostbyname(hostp); 2238 if (host) { 2239 sin.sin_family = host->h_addrtype; 2240 #if defined(h_addr) /* In 4.3, this is a #define */ 2241 memmove((caddr_t)&sin.sin_addr, 2242 host->h_addr_list[0], host->h_length); 2243 #else /* defined(h_addr) */ 2244 memmove((caddr_t)&sin.sin_addr, host->h_addr, host->h_length); 2245 #endif /* defined(h_addr) */ 2246 strncpy(_hostname, host->h_name, sizeof(_hostname)); 2247 _hostname[sizeof(_hostname)-1] = '\0'; 2248 hostname = _hostname; 2249 } else { 2250 herror(hostp); 2251 setuid(getuid()); 2252 return 0; 2253 } 2254 } 2255 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2256 } 2257 #endif 2258 if (portp) { 2259 if (*portp == '-') { 2260 portp++; 2261 telnetport = 1; 2262 } else 2263 telnetport = 0; 2264 sin.sin_port = atoi(portp); 2265 if (sin.sin_port == 0) { 2266 sp = getservbyname(portp, "tcp"); 2267 if (sp) 2268 sin.sin_port = sp->s_port; 2269 else { 2270 printf("%s: bad port number\n", portp); 2271 setuid(getuid()); 2272 return 0; 2273 } 2274 } else { 2275 #if !defined(htons) 2276 u_short htons P((unsigned short)); 2277 #endif /* !defined(htons) */ 2278 sin.sin_port = htons(sin.sin_port); 2279 } 2280 } else { 2281 if (sp == 0) { 2282 sp = getservbyname("telnet", "tcp"); 2283 if (sp == 0) { 2284 fprintf(stderr, "telnet: tcp/telnet: unknown service\n"); 2285 setuid(getuid()); 2286 return 0; 2287 } 2288 sin.sin_port = sp->s_port; 2289 } 2290 telnetport = 1; 2291 } 2292 printf("Trying %s...\n", inet_ntoa(sin.sin_addr)); 2293 do { 2294 net = socket(AF_INET, SOCK_STREAM, 0); 2295 setuid(getuid()); 2296 if (net < 0) { 2297 perror("telnet: socket"); 2298 return 0; 2299 } 2300 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2301 if (srp && setsockopt(net, IPPROTO_IP, IP_OPTIONS, (char *)srp, srlen) < 0) 2302 perror("setsockopt (IP_OPTIONS)"); 2303 #endif 2304 #if defined(IPPROTO_IP) && defined(IP_TOS) 2305 { 2306 # if defined(HAS_GETTOS) 2307 struct tosent *tp; 2308 if (tos < 0 && (tp = gettosbyname("telnet", "tcp"))) 2309 tos = tp->t_tos; 2310 # endif 2311 if (tos < 0) 2312 tos = IPTOS_LOWDELAY; /* Low Delay bit */ 2313 if (tos 2314 && (setsockopt(net, IPPROTO_IP, IP_TOS, 2315 (char *)&tos, sizeof(int)) < 0) 2316 && (errno != ENOPROTOOPT)) 2317 perror("telnet: setsockopt (IP_TOS) (ignored)"); 2318 } 2319 #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 2320 2321 if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) { 2322 perror("setsockopt (SO_DEBUG)"); 2323 } 2324 2325 if (connect(net, (struct sockaddr *)&sin, sizeof (sin)) < 0) { 2326 #if defined(h_addr) /* In 4.3, this is a #define */ 2327 if (host && host->h_addr_list[1]) { 2328 int oerrno = errno; 2329 2330 fprintf(stderr, "telnet: connect to address %s: ", 2331 inet_ntoa(sin.sin_addr)); 2332 errno = oerrno; 2333 perror((char *)0); 2334 host->h_addr_list++; 2335 memmove((caddr_t)&sin.sin_addr, 2336 host->h_addr_list[0], host->h_length); 2337 (void) NetClose(net); 2338 continue; 2339 } 2340 #endif /* defined(h_addr) */ 2341 perror("telnet: Unable to connect to remote host"); 2342 return 0; 2343 } 2344 connected++; 2345 #if defined(AUTHENTICATION) 2346 auth_encrypt_connect(connected); 2347 #endif /* defined(AUTHENTICATION) */ 2348 } while (connected == 0); 2349 cmdrc(hostp, hostname); 2350 if (autologin && user == NULL) { 2351 struct passwd *pw; 2352 2353 user = getenv("USER"); 2354 if (user == NULL || 2355 ((pw = getpwnam(user)) && pw->pw_uid != getuid())) { 2356 if ((pw = getpwuid(getuid())) != NULL) 2357 user = pw->pw_name; 2358 else 2359 user = NULL; 2360 } 2361 } 2362 if (user) { 2363 env_define((unsigned char *)"USER", (unsigned char *)user); 2364 env_export((unsigned char *)"USER", NULL); 2365 } 2366 (void) call(status, "status", "notmuch", 0); 2367 if (setjmp(peerdied) == 0) 2368 telnet(user); 2369 (void) NetClose(net); 2370 ExitString("Connection closed by foreign host.\n",1); 2371 /*NOTREACHED*/ 2372 } 2373 2374 #define HELPINDENT ((int)sizeof ("connect")) 2375 2376 static char 2377 openhelp[] = "connect to a site", 2378 closehelp[] = "close current connection", 2379 logouthelp[] = "forcibly logout remote user and close the connection", 2380 quithelp[] = "exit telnet", 2381 statushelp[] = "print status information", 2382 helphelp[] = "print help information", 2383 sendhelp[] = "transmit special characters ('send ?' for more)", 2384 sethelp[] = "set operating parameters ('set ?' for more)", 2385 unsethelp[] = "unset operating parameters ('unset ?' for more)", 2386 togglestring[] ="toggle operating parameters ('toggle ?' for more)", 2387 slchelp[] = "change state of special charaters ('slc ?' for more)", 2388 displayhelp[] = "display operating parameters", 2389 #if defined(TN3270) && defined(unix) 2390 transcomhelp[] = "specify Unix command for transparent mode pipe", 2391 #endif /* defined(TN3270) && defined(unix) */ 2392 #if defined(AUTHENTICATION) 2393 authhelp[] = "turn on (off) authentication ('auth ?' for more)", 2394 #endif 2395 #if defined(unix) 2396 zhelp[] = "suspend telnet", 2397 #endif /* defined(unix) */ 2398 shellhelp[] = "invoke a subshell", 2399 envhelp[] = "change environment variables ('environ ?' for more)", 2400 modestring[] = "try to enter line or character mode ('mode ?' for more)"; 2401 2402 static Command cmdtab[] = { 2403 { "close", closehelp, bye, 1 }, 2404 { "logout", logouthelp, logout, 1 }, 2405 { "display", displayhelp, display, 0 }, 2406 { "mode", modestring, modecmd, 0 }, 2407 { "open", openhelp, tn, 0 }, 2408 { "quit", quithelp, quit, 0 }, 2409 { "send", sendhelp, sendcmd, 0 }, 2410 { "set", sethelp, setcmd, 0 }, 2411 { "unset", unsethelp, unsetcmd, 0 }, 2412 { "status", statushelp, status, 0 }, 2413 { "toggle", togglestring, toggle, 0 }, 2414 { "slc", slchelp, slccmd, 0 }, 2415 #if defined(TN3270) && defined(unix) 2416 { "transcom", transcomhelp, settranscom, 0 }, 2417 #endif /* defined(TN3270) && defined(unix) */ 2418 #if defined(AUTHENTICATION) 2419 { "auth", authhelp, auth_cmd, 0 }, 2420 #endif 2421 #if defined(unix) 2422 { "z", zhelp, suspend, 0 }, 2423 #endif /* defined(unix) */ 2424 #if defined(TN3270) 2425 { "!", shellhelp, shell, 1 }, 2426 #else 2427 { "!", shellhelp, shell, 0 }, 2428 #endif 2429 { "environ", envhelp, env_cmd, 0 }, 2430 { "?", helphelp, help, 0 }, 2431 { NULL, NULL, NULL, 0 } 2432 }; 2433 2434 static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead"; 2435 static char escapehelp[] = "deprecated command -- use 'set escape' instead"; 2436 2437 static Command cmdtab2[] = { 2438 { "help", 0, help, 0 }, 2439 { "escape", escapehelp, setescape, 0 }, 2440 { "crmod", crmodhelp, togcrmod, 0 }, 2441 { NULL, NULL, NULL, 0 } 2442 }; 2443 2444 2445 /* 2446 * Call routine with argc, argv set from args (terminated by 0). 2447 */ 2448 2449 /*VARARGS1*/ 2450 static int 2451 #ifdef __STDC__ 2452 call(intrtn_t routine, ...) 2453 #else 2454 call(va_alist) 2455 va_dcl 2456 #endif 2457 { 2458 va_list ap; 2459 char *args[100]; 2460 int argno = 0; 2461 #ifndef __STDC__ 2462 intrtn_t routine; 2463 2464 va_start(ap); 2465 routine = (va_arg(ap, intrtn_t)); 2466 #else 2467 va_start(ap, routine); 2468 #endif 2469 2470 while ((args[argno++] = va_arg(ap, char *)) != 0) { 2471 ; 2472 } 2473 va_end(ap); 2474 return (*routine)(argno-1, args); 2475 } 2476 2477 2478 static Command * 2479 getcmd(name) 2480 char *name; 2481 { 2482 Command *cm; 2483 2484 if ((cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command))) != NULL) 2485 return cm; 2486 return (Command *) genget(name, (char **) cmdtab2, sizeof(Command)); 2487 } 2488 2489 void 2490 command(top, tbuf, cnt) 2491 int top; 2492 char *tbuf; 2493 int cnt; 2494 { 2495 register Command *c; 2496 2497 setcommandmode(); 2498 if (!top) { 2499 putchar('\n'); 2500 #if defined(unix) 2501 } else { 2502 (void) signal(SIGINT, SIG_DFL); 2503 (void) signal(SIGQUIT, SIG_DFL); 2504 #endif /* defined(unix) */ 2505 } 2506 for (;;) { 2507 if (rlogin == _POSIX_VDISABLE) 2508 printf("%s> ", prompt); 2509 if (tbuf) { 2510 register char *cp; 2511 cp = line; 2512 while (cnt > 0 && (*cp++ = *tbuf++) != '\n') 2513 cnt--; 2514 tbuf = 0; 2515 if (cp == line || *--cp != '\n' || cp == line) 2516 goto getline; 2517 *cp = '\0'; 2518 if (rlogin == _POSIX_VDISABLE) 2519 printf("%s\n", line); 2520 } else { 2521 getline: 2522 if (rlogin != _POSIX_VDISABLE) 2523 printf("%s> ", prompt); 2524 if (fgets(line, sizeof(line), stdin) == NULL) { 2525 if (feof(stdin) || ferror(stdin)) { 2526 (void) quit(0, NULL); 2527 /*NOTREACHED*/ 2528 } 2529 break; 2530 } 2531 } 2532 if (line[0] == 0) 2533 break; 2534 makeargv(); 2535 if (margv[0] == 0) { 2536 break; 2537 } 2538 c = getcmd(margv[0]); 2539 if (Ambiguous(c)) { 2540 printf("?Ambiguous command\n"); 2541 continue; 2542 } 2543 if (c == 0) { 2544 printf("?Invalid command\n"); 2545 continue; 2546 } 2547 if (c->needconnect && !connected) { 2548 printf("?Need to be connected first.\n"); 2549 continue; 2550 } 2551 if ((*c->handler)(margc, margv)) { 2552 break; 2553 } 2554 } 2555 if (!top) { 2556 if (!connected) { 2557 longjmp(toplevel, 1); 2558 /*NOTREACHED*/ 2559 } 2560 #if defined(TN3270) 2561 if (shell_active == 0) { 2562 setconnmode(0); 2563 } 2564 #else /* defined(TN3270) */ 2565 setconnmode(0); 2566 #endif /* defined(TN3270) */ 2567 } 2568 } 2569 2570 /* 2571 * Help command. 2572 */ 2573 static int 2574 help(argc, argv) 2575 int argc; 2576 char *argv[]; 2577 { 2578 register Command *c; 2579 2580 if (argc == 1) { 2581 printf("Commands may be abbreviated. Commands are:\n\n"); 2582 for (c = cmdtab; c->name; c++) 2583 if (c->help) { 2584 printf("%-*s\t%s\n", HELPINDENT, c->name, 2585 c->help); 2586 } 2587 return 0; 2588 } 2589 while (--argc > 0) { 2590 register char *arg; 2591 arg = *++argv; 2592 c = getcmd(arg); 2593 if (Ambiguous(c)) 2594 printf("?Ambiguous help command %s\n", arg); 2595 else if (c == (Command *)0) 2596 printf("?Invalid help command %s\n", arg); 2597 else 2598 printf("%s\n", c->help); 2599 } 2600 return 0; 2601 } 2602 2603 static char *rcname = 0; 2604 static char rcbuf[128]; 2605 2606 void 2607 cmdrc(m1, m2) 2608 char *m1, *m2; 2609 { 2610 register Command *c; 2611 FILE *rcfile; 2612 int gotmachine = 0; 2613 int l1 = strlen(m1); 2614 int l2 = strlen(m2); 2615 char m1save[64]; 2616 2617 if (skiprc) 2618 return; 2619 2620 strcpy(m1save, m1); 2621 m1 = m1save; 2622 2623 if (rcname == 0) { 2624 rcname = getenv("HOME"); 2625 if (rcname) 2626 strcpy(rcbuf, rcname); 2627 else 2628 rcbuf[0] = '\0'; 2629 strcat(rcbuf, "/.telnetrc"); 2630 rcname = rcbuf; 2631 } 2632 2633 if ((rcfile = fopen(rcname, "r")) == 0) { 2634 return; 2635 } 2636 2637 for (;;) { 2638 if (fgets(line, sizeof(line), rcfile) == NULL) 2639 break; 2640 if (line[0] == 0) 2641 break; 2642 if (line[0] == '#') 2643 continue; 2644 if (gotmachine) { 2645 if (!isspace(line[0])) 2646 gotmachine = 0; 2647 } 2648 if (gotmachine == 0) { 2649 if (isspace(line[0])) 2650 continue; 2651 if (strncasecmp(line, m1, l1) == 0) 2652 strncpy(line, &line[l1], sizeof(line) - l1); 2653 else if (strncasecmp(line, m2, l2) == 0) 2654 strncpy(line, &line[l2], sizeof(line) - l2); 2655 else if (strncasecmp(line, "DEFAULT", 7) == 0) 2656 strncpy(line, &line[7], sizeof(line) - 7); 2657 else 2658 continue; 2659 if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n') 2660 continue; 2661 gotmachine = 1; 2662 } 2663 makeargv(); 2664 if (margv[0] == 0) 2665 continue; 2666 c = getcmd(margv[0]); 2667 if (Ambiguous(c)) { 2668 printf("?Ambiguous command: %s\n", margv[0]); 2669 continue; 2670 } 2671 if (c == 0) { 2672 printf("?Invalid command: %s\n", margv[0]); 2673 continue; 2674 } 2675 /* 2676 * This should never happen... 2677 */ 2678 if (c->needconnect && !connected) { 2679 printf("?Need to be connected first for %s.\n", margv[0]); 2680 continue; 2681 } 2682 (*c->handler)(margc, margv); 2683 } 2684 fclose(rcfile); 2685 } 2686 2687 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2688 2689 /* 2690 * Source route is handed in as 2691 * [!]@hop1@hop2...[@|:]dst 2692 * If the leading ! is present, it is a 2693 * strict source route, otherwise it is 2694 * assmed to be a loose source route. 2695 * 2696 * We fill in the source route option as 2697 * hop1,hop2,hop3...dest 2698 * and return a pointer to hop1, which will 2699 * be the address to connect() to. 2700 * 2701 * Arguments: 2702 * arg: pointer to route list to decipher 2703 * 2704 * cpp: If *cpp is not equal to NULL, this is a 2705 * pointer to a pointer to a character array 2706 * that should be filled in with the option. 2707 * 2708 * lenp: pointer to an integer that contains the 2709 * length of *cpp if *cpp != NULL. 2710 * 2711 * Return values: 2712 * 2713 * Returns the address of the host to connect to. If the 2714 * return value is -1, there was a syntax error in the 2715 * option, either unknown characters, or too many hosts. 2716 * If the return value is 0, one of the hostnames in the 2717 * path is unknown, and *cpp is set to point to the bad 2718 * hostname. 2719 * 2720 * *cpp: If *cpp was equal to NULL, it will be filled 2721 * in with a pointer to our static area that has 2722 * the option filled in. This will be 32bit aligned. 2723 * 2724 * *lenp: This will be filled in with how long the option 2725 * pointed to by *cpp is. 2726 * 2727 */ 2728 unsigned long 2729 sourceroute(arg, cpp, lenp) 2730 char *arg; 2731 char **cpp; 2732 unsigned long *lenp; 2733 { 2734 static char lsr[44]; 2735 #ifdef sysV88 2736 static IOPTN ipopt; 2737 #endif 2738 char *cp, *cp2, *lsrp, *lsrep; 2739 register int tmp; 2740 struct in_addr sin_addr; 2741 register struct hostent *host = 0; 2742 register char c; 2743 2744 /* 2745 * Verify the arguments, and make sure we have 2746 * at least 7 bytes for the option. 2747 */ 2748 if (cpp == NULL || lenp == NULL) 2749 return((unsigned long)-1); 2750 if (*cpp != NULL && *lenp < 7) 2751 return((unsigned long)-1); 2752 /* 2753 * Decide whether we have a buffer passed to us, 2754 * or if we need to use our own static buffer. 2755 */ 2756 if (*cpp) { 2757 lsrp = *cpp; 2758 lsrep = lsrp + *lenp; 2759 } else { 2760 *cpp = lsrp = lsr; 2761 lsrep = lsrp + 44; 2762 } 2763 2764 cp = arg; 2765 2766 /* 2767 * Next, decide whether we have a loose source 2768 * route or a strict source route, and fill in 2769 * the begining of the option. 2770 */ 2771 #ifndef sysV88 2772 if (*cp == '!') { 2773 cp++; 2774 *lsrp++ = IPOPT_SSRR; 2775 } else 2776 *lsrp++ = IPOPT_LSRR; 2777 #else 2778 if (*cp == '!') { 2779 cp++; 2780 ipopt.io_type = IPOPT_SSRR; 2781 } else 2782 ipopt.io_type = IPOPT_LSRR; 2783 #endif 2784 2785 if (*cp != '@') 2786 return((unsigned long)-1); 2787 2788 #ifndef sysV88 2789 lsrp++; /* skip over length, we'll fill it in later */ 2790 *lsrp++ = 4; 2791 #endif 2792 2793 cp++; 2794 2795 sin_addr.s_addr = 0; 2796 2797 for (c = 0;;) { 2798 if (c == ':') 2799 cp2 = 0; 2800 else for (cp2 = cp; (c = *cp2) != '\0'; cp2++) { 2801 if (c == ',') { 2802 *cp2++ = '\0'; 2803 if (*cp2 == '@') 2804 cp2++; 2805 } else if (c == '@') { 2806 *cp2++ = '\0'; 2807 } else if (c == ':') { 2808 *cp2++ = '\0'; 2809 } else 2810 continue; 2811 break; 2812 } 2813 if (!c) 2814 cp2 = 0; 2815 2816 if ((tmp = inet_addr(cp)) != INADDR_NONE) { 2817 sin_addr.s_addr = tmp; 2818 } else if ((host = gethostbyname(cp)) != NULL) { 2819 #if defined(h_addr) 2820 memmove((caddr_t)&sin_addr, 2821 host->h_addr_list[0], host->h_length); 2822 #else 2823 memmove((caddr_t)&sin_addr, host->h_addr, host->h_length); 2824 #endif 2825 } else { 2826 *cpp = cp; 2827 return(0); 2828 } 2829 memmove(lsrp, (char *)&sin_addr, 4); 2830 lsrp += 4; 2831 if (cp2) 2832 cp = cp2; 2833 else 2834 break; 2835 /* 2836 * Check to make sure there is space for next address 2837 */ 2838 if (lsrp + 4 > lsrep) 2839 return((unsigned long)-1); 2840 } 2841 #ifndef sysV88 2842 if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) { 2843 *cpp = 0; 2844 *lenp = 0; 2845 return((unsigned long)-1); 2846 } 2847 *lsrp++ = IPOPT_NOP; /* 32 bit word align it */ 2848 *lenp = lsrp - *cpp; 2849 #else 2850 ipopt.io_len = lsrp - *cpp; 2851 if (ipopt.io_len <= 5) { /* Is 3 better ? */ 2852 *cpp = 0; 2853 *lenp = 0; 2854 return((unsigned long)-1); 2855 } 2856 *lenp = sizeof(ipopt); 2857 *cpp = (char *) &ipopt; 2858 #endif 2859 return(sin_addr.s_addr); 2860 } 2861 #endif 2862