1 /* $NetBSD: commands.c,v 1.25 1998/11/06 19:54:18 christos 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 1.25 1998/11/06 19:54:18 christos 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((char *)); 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((unsigned char)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((unsigned char)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 #if 0 699 { "authdebug", 700 "Toggle authentication debugging", 701 auth_togdebug, 702 0, 703 "print authentication debugging information" }, 704 #endif 705 #endif 706 { "skiprc", 707 "don't read ~/.telnetrc file", 708 0, 709 &skiprc, 710 "skip reading of ~/.telnetrc file" }, 711 { "binary", 712 "sending and receiving of binary data", 713 togbinary, 714 0, 715 0 }, 716 { "inbinary", 717 "receiving of binary data", 718 togrbinary, 719 0, 720 0 }, 721 { "outbinary", 722 "sending of binary data", 723 togxbinary, 724 0, 725 0 }, 726 { "crlf", 727 "sending carriage returns as telnet <CR><LF>", 728 togcrlf, 729 &crlf, 730 0 }, 731 { "crmod", 732 "mapping of received carriage returns", 733 0, 734 &crmod, 735 "map carriage return on output" }, 736 { "localchars", 737 "local recognition of certain control characters", 738 lclchars, 739 &localchars, 740 "recognize certain control characters" }, 741 { " ", "", 0 }, /* empty line */ 742 #if defined(unix) && defined(TN3270) 743 { "apitrace", 744 "(debugging) toggle tracing of API transactions", 745 0, 746 &apitrace, 747 "trace API transactions" }, 748 { "cursesdata", 749 "(debugging) toggle printing of hexadecimal curses data", 750 0, 751 &cursesdata, 752 "print hexadecimal representation of curses data" }, 753 #endif /* defined(unix) && defined(TN3270) */ 754 { "debug", 755 "debugging", 756 togdebug, 757 &debug, 758 "turn on socket level debugging" }, 759 { "netdata", 760 "printing of hexadecimal network data (debugging)", 761 0, 762 &netdata, 763 "print hexadecimal representation of network traffic" }, 764 { "prettydump", 765 "output of \"netdata\" to user readable format (debugging)", 766 0, 767 &prettydump, 768 "print user readable output for \"netdata\"" }, 769 { "options", 770 "viewing of options processing (debugging)", 771 0, 772 &showoptions, 773 "show option processing" }, 774 #if defined(unix) 775 { "termdata", 776 "(debugging) toggle printing of hexadecimal terminal data", 777 0, 778 &termdata, 779 "print hexadecimal representation of terminal traffic" }, 780 #endif /* defined(unix) */ 781 { "?", 782 0, 783 togglehelp }, 784 { "help", 785 0, 786 togglehelp }, 787 { 0 } 788 }; 789 790 static int 791 togglehelp(n) 792 int n; 793 { 794 struct togglelist *c; 795 796 for (c = Togglelist; c->name; c++) { 797 if (c->help) { 798 if (*c->help) 799 printf("%-15s toggle %s\n", c->name, c->help); 800 else 801 printf("\n"); 802 } 803 } 804 printf("\n"); 805 printf("%-15s %s\n", "?", "display help information"); 806 return 0; 807 } 808 809 static void 810 settogglehelp(set) 811 int set; 812 { 813 struct togglelist *c; 814 815 for (c = Togglelist; c->name; c++) { 816 if (c->help) { 817 if (*c->help) 818 printf("%-15s %s %s\n", c->name, set ? "enable" : "disable", 819 c->help); 820 else 821 printf("\n"); 822 } 823 } 824 } 825 826 #define GETTOGGLE(name) (struct togglelist *) \ 827 genget(name, (char **) Togglelist, sizeof(struct togglelist)) 828 829 static int 830 toggle(argc, argv) 831 int argc; 832 char *argv[]; 833 { 834 int retval = 1; 835 char *name; 836 struct togglelist *c; 837 838 if (argc < 2) { 839 fprintf(stderr, 840 "Need an argument to 'toggle' command. 'toggle ?' for help.\n"); 841 return 0; 842 } 843 argc--; 844 argv++; 845 while (argc--) { 846 name = *argv++; 847 c = GETTOGGLE(name); 848 if (Ambiguous(c)) { 849 fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\n", 850 name); 851 return 0; 852 } else if (c == 0) { 853 fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\n", 854 name); 855 return 0; 856 } else { 857 if (c->variable) { 858 *c->variable = !*c->variable; /* invert it */ 859 if (c->actionexplanation) { 860 printf("%s %s.\n", *c->variable? "Will" : "Won't", 861 c->actionexplanation); 862 } 863 } 864 if (c->handler) { 865 retval &= (*c->handler)(-1); 866 } 867 } 868 } 869 return retval; 870 } 871 872 /* 873 * The following perform the "set" command. 874 */ 875 876 #ifdef USE_TERMIO 877 struct termio new_tc = { 0 }; 878 #endif 879 880 struct setlist { 881 char *name; /* name */ 882 char *help; /* help information */ 883 void (*handler) P((char *)); 884 cc_t *charp; /* where it is located at */ 885 }; 886 887 static struct setlist Setlist[] = { 888 #ifdef KLUDGELINEMODE 889 { "echo", "character to toggle local echoing on/off", 0, &echoc }, 890 #endif 891 { "escape", "character to escape back to telnet command mode", 0, &escape }, 892 { "rlogin", "rlogin escape character", 0, &rlogin }, 893 { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile}, 894 { " ", "" }, 895 { " ", "The following need 'localchars' to be toggled true", 0, 0 }, 896 { "flushoutput", "character to cause an Abort Output", 0, termFlushCharp }, 897 { "interrupt", "character to cause an Interrupt Process", 0, termIntCharp }, 898 { "quit", "character to cause an Abort process", 0, termQuitCharp }, 899 { "eof", "character to cause an EOF ", 0, termEofCharp }, 900 { " ", "" }, 901 { " ", "The following are for local editing in linemode", 0, 0 }, 902 { "erase", "character to use to erase a character", 0, termEraseCharp }, 903 { "kill", "character to use to erase a line", 0, termKillCharp }, 904 { "lnext", "character to use for literal next", 0, termLiteralNextCharp }, 905 { "susp", "character to cause a Suspend Process", 0, termSuspCharp }, 906 { "reprint", "character to use for line reprint", 0, termRprntCharp }, 907 { "worderase", "character to use to erase a word", 0, termWerasCharp }, 908 { "start", "character to use for XON", 0, termStartCharp }, 909 { "stop", "character to use for XOFF", 0, termStopCharp }, 910 { "forw1", "alternate end of line character", 0, termForw1Charp }, 911 { "forw2", "alternate end of line character", 0, termForw2Charp }, 912 { "ayt", "alternate AYT character", 0, termAytCharp }, 913 { 0 } 914 }; 915 916 #if defined(CRAY) && !defined(__STDC__) 917 /* Work around compiler bug in pcc 4.1.5 */ 918 void 919 _setlist_init() 920 { 921 #ifndef KLUDGELINEMODE 922 #define N 5 923 #else 924 #define N 6 925 #endif 926 Setlist[N+0].charp = &termFlushChar; 927 Setlist[N+1].charp = &termIntChar; 928 Setlist[N+2].charp = &termQuitChar; 929 Setlist[N+3].charp = &termEofChar; 930 Setlist[N+6].charp = &termEraseChar; 931 Setlist[N+7].charp = &termKillChar; 932 Setlist[N+8].charp = &termLiteralNextChar; 933 Setlist[N+9].charp = &termSuspChar; 934 Setlist[N+10].charp = &termRprntChar; 935 Setlist[N+11].charp = &termWerasChar; 936 Setlist[N+12].charp = &termStartChar; 937 Setlist[N+13].charp = &termStopChar; 938 Setlist[N+14].charp = &termForw1Char; 939 Setlist[N+15].charp = &termForw2Char; 940 Setlist[N+16].charp = &termAytChar; 941 #undef N 942 } 943 #endif /* defined(CRAY) && !defined(__STDC__) */ 944 945 static struct setlist * 946 getset(name) 947 char *name; 948 { 949 return (struct setlist *) 950 genget(name, (char **) Setlist, sizeof(struct setlist)); 951 } 952 953 void 954 set_escape_char(s) 955 char *s; 956 { 957 if (rlogin != _POSIX_VDISABLE) { 958 rlogin = (s && *s) ? special(s) : _POSIX_VDISABLE; 959 printf("Telnet rlogin escape character is '%s'.\n", 960 control(rlogin)); 961 } else { 962 escape = (s && *s) ? special(s) : _POSIX_VDISABLE; 963 printf("Telnet escape character is '%s'.\n", control(escape)); 964 } 965 } 966 967 static int 968 setcmd(argc, argv) 969 int argc; 970 char *argv[]; 971 { 972 int value; 973 struct setlist *ct; 974 struct togglelist *c; 975 976 if (argc < 2 || argc > 3) { 977 printf("Format is 'set Name Value'\n'set ?' for help.\n"); 978 return 0; 979 } 980 if ((argc == 2) && (isprefix(argv[1], "?") || isprefix(argv[1], "help"))) { 981 for (ct = Setlist; ct->name; ct++) 982 printf("%-15s %s\n", ct->name, ct->help); 983 printf("\n"); 984 settogglehelp(1); 985 printf("%-15s %s\n", "?", "display help information"); 986 return 0; 987 } 988 989 ct = getset(argv[1]); 990 if (ct == 0) { 991 c = GETTOGGLE(argv[1]); 992 if (c == 0) { 993 fprintf(stderr, "'%s': unknown argument ('set ?' for help).\n", 994 argv[1]); 995 return 0; 996 } else if (Ambiguous(c)) { 997 fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n", 998 argv[1]); 999 return 0; 1000 } 1001 if (c->variable) { 1002 if ((argc == 2) || (strcmp("on", argv[2]) == 0)) 1003 *c->variable = 1; 1004 else if (strcmp("off", argv[2]) == 0) 1005 *c->variable = 0; 1006 else { 1007 printf("Format is 'set togglename [on|off]'\n'set ?' for help.\n"); 1008 return 0; 1009 } 1010 if (c->actionexplanation) { 1011 printf("%s %s.\n", *c->variable? "Will" : "Won't", 1012 c->actionexplanation); 1013 } 1014 } 1015 if (c->handler) 1016 (*c->handler)(1); 1017 } else if (argc != 3) { 1018 printf("Format is 'set Name Value'\n'set ?' for help.\n"); 1019 return 0; 1020 } else if (Ambiguous(ct)) { 1021 fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n", 1022 argv[1]); 1023 return 0; 1024 } else if (ct->handler) { 1025 (*ct->handler)(argv[2]); 1026 printf("%s set to \"%s\".\n", ct->name, (char *)ct->charp); 1027 } else { 1028 if (strcmp("off", argv[2])) { 1029 value = special(argv[2]); 1030 } else { 1031 value = _POSIX_VDISABLE; 1032 } 1033 *(ct->charp) = (cc_t)value; 1034 printf("%s character is '%s'.\n", ct->name, control(*(ct->charp))); 1035 } 1036 slc_check(); 1037 return 1; 1038 } 1039 1040 static int 1041 unsetcmd(argc, argv) 1042 int argc; 1043 char *argv[]; 1044 { 1045 struct setlist *ct; 1046 struct togglelist *c; 1047 register char *name; 1048 1049 if (argc < 2) { 1050 fprintf(stderr, 1051 "Need an argument to 'unset' command. 'unset ?' for help.\n"); 1052 return 0; 1053 } 1054 if (isprefix(argv[1], "?") || isprefix(argv[1], "help")) { 1055 for (ct = Setlist; ct->name; ct++) 1056 printf("%-15s %s\n", ct->name, ct->help); 1057 printf("\n"); 1058 settogglehelp(0); 1059 printf("%-15s %s\n", "?", "display help information"); 1060 return 0; 1061 } 1062 1063 argc--; 1064 argv++; 1065 while (argc--) { 1066 name = *argv++; 1067 ct = getset(name); 1068 if (ct == 0) { 1069 c = GETTOGGLE(name); 1070 if (c == 0) { 1071 fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\n", 1072 name); 1073 return 0; 1074 } else if (Ambiguous(c)) { 1075 fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n", 1076 name); 1077 return 0; 1078 } 1079 if (c->variable) { 1080 *c->variable = 0; 1081 if (c->actionexplanation) { 1082 printf("%s %s.\n", *c->variable? "Will" : "Won't", 1083 c->actionexplanation); 1084 } 1085 } 1086 if (c->handler) 1087 (*c->handler)(0); 1088 } else if (Ambiguous(ct)) { 1089 fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n", 1090 name); 1091 return 0; 1092 } else if (ct->handler) { 1093 (*ct->handler)(0); 1094 printf("%s reset to \"%s\".\n", ct->name, (char *)ct->charp); 1095 } else { 1096 *(ct->charp) = _POSIX_VDISABLE; 1097 printf("%s character is '%s'.\n", ct->name, control(*(ct->charp))); 1098 } 1099 } 1100 return 1; 1101 } 1102 1103 /* 1104 * The following are the data structures and routines for the 1105 * 'mode' command. 1106 */ 1107 #ifdef KLUDGELINEMODE 1108 extern int kludgelinemode; 1109 1110 static int 1111 dokludgemode(n) 1112 int n; 1113 { 1114 kludgelinemode = 1; 1115 send_wont(TELOPT_LINEMODE, 1); 1116 send_dont(TELOPT_SGA, 1); 1117 send_dont(TELOPT_ECHO, 1); 1118 return 1; 1119 } 1120 #endif 1121 1122 static int 1123 dolinemode(n) 1124 int n; 1125 { 1126 #ifdef KLUDGELINEMODE 1127 if (kludgelinemode) 1128 send_dont(TELOPT_SGA, 1); 1129 #endif 1130 send_will(TELOPT_LINEMODE, 1); 1131 send_dont(TELOPT_ECHO, 1); 1132 return 1; 1133 } 1134 1135 static int 1136 docharmode(n) 1137 int n; 1138 { 1139 #ifdef KLUDGELINEMODE 1140 if (kludgelinemode) 1141 send_do(TELOPT_SGA, 1); 1142 else 1143 #endif 1144 send_wont(TELOPT_LINEMODE, 1); 1145 send_do(TELOPT_ECHO, 1); 1146 return 1; 1147 } 1148 1149 static int 1150 dolmmode(bit, on) 1151 int bit, on; 1152 { 1153 unsigned char c; 1154 extern int linemode; 1155 1156 if (my_want_state_is_wont(TELOPT_LINEMODE)) { 1157 printf("?Need to have LINEMODE option enabled first.\n"); 1158 printf("'mode ?' for help.\n"); 1159 return 0; 1160 } 1161 1162 if (on) 1163 c = (linemode | bit); 1164 else 1165 c = (linemode & ~bit); 1166 lm_mode(&c, 1, 1); 1167 return 1; 1168 } 1169 1170 int 1171 set_mode(bit) 1172 int bit; 1173 { 1174 return dolmmode(bit, 1); 1175 } 1176 1177 int 1178 clear_mode(bit) 1179 int bit; 1180 { 1181 return dolmmode(bit, 0); 1182 } 1183 1184 struct modelist { 1185 char *name; /* command name */ 1186 char *help; /* help string */ 1187 int (*handler) /* routine which executes command */ 1188 P((int)); 1189 int needconnect; /* Do we need to be connected to execute? */ 1190 int arg1; 1191 }; 1192 1193 static struct modelist ModeList[] = { 1194 { "character", "Disable LINEMODE option", docharmode, 1 }, 1195 #ifdef KLUDGELINEMODE 1196 { "", "(or disable obsolete line-by-line mode)", 0 }, 1197 #endif 1198 { "line", "Enable LINEMODE option", dolinemode, 1 }, 1199 #ifdef KLUDGELINEMODE 1200 { "", "(or enable obsolete line-by-line mode)", 0 }, 1201 #endif 1202 { "", "", 0 }, 1203 { "", "These require the LINEMODE option to be enabled", 0 }, 1204 { "isig", "Enable signal trapping", set_mode, 1, MODE_TRAPSIG }, 1205 { "+isig", 0, set_mode, 1, MODE_TRAPSIG }, 1206 { "-isig", "Disable signal trapping", clear_mode, 1, MODE_TRAPSIG }, 1207 { "edit", "Enable character editing", set_mode, 1, MODE_EDIT }, 1208 { "+edit", 0, set_mode, 1, MODE_EDIT }, 1209 { "-edit", "Disable character editing", clear_mode, 1, MODE_EDIT }, 1210 { "softtabs", "Enable tab expansion", set_mode, 1, MODE_SOFT_TAB }, 1211 { "+softtabs", 0, set_mode, 1, MODE_SOFT_TAB }, 1212 { "-softtabs", "Disable character editing", clear_mode, 1, MODE_SOFT_TAB }, 1213 { "litecho", "Enable literal character echo", set_mode, 1, MODE_LIT_ECHO }, 1214 { "+litecho", 0, set_mode, 1, MODE_LIT_ECHO }, 1215 { "-litecho", "Disable literal character echo", clear_mode, 1, MODE_LIT_ECHO }, 1216 { "help", 0, modehelp, 0 }, 1217 #ifdef KLUDGELINEMODE 1218 { "kludgeline", 0, dokludgemode, 1 }, 1219 #endif 1220 { "", "", 0 }, 1221 { "?", "Print help information", modehelp, 0 }, 1222 { 0 }, 1223 }; 1224 1225 1226 int 1227 modehelp(n) 1228 int n; 1229 { 1230 struct modelist *mt; 1231 1232 printf("format is: 'mode Mode', where 'Mode' is one of:\n\n"); 1233 for (mt = ModeList; mt->name; mt++) { 1234 if (mt->help) { 1235 if (*mt->help) 1236 printf("%-15s %s\n", mt->name, mt->help); 1237 else 1238 printf("\n"); 1239 } 1240 } 1241 return 0; 1242 } 1243 1244 #define GETMODECMD(name) (struct modelist *) \ 1245 genget(name, (char **) ModeList, sizeof(struct modelist)) 1246 1247 static int 1248 modecmd(argc, argv) 1249 int argc; 1250 char *argv[]; 1251 { 1252 struct modelist *mt; 1253 1254 if (argc != 2) { 1255 printf("'mode' command requires an argument\n"); 1256 printf("'mode ?' for help.\n"); 1257 } else if ((mt = GETMODECMD(argv[1])) == 0) { 1258 fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\n", argv[1]); 1259 } else if (Ambiguous(mt)) { 1260 fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\n", argv[1]); 1261 } else if (mt->needconnect && !connected) { 1262 printf("?Need to be connected first.\n"); 1263 printf("'mode ?' for help.\n"); 1264 } else if (mt->handler) { 1265 return (*mt->handler)(mt->arg1); 1266 } 1267 return 0; 1268 } 1269 1270 /* 1271 * The following data structures and routines implement the 1272 * "display" command. 1273 */ 1274 1275 static int 1276 display(argc, argv) 1277 int argc; 1278 char *argv[]; 1279 { 1280 struct togglelist *tl; 1281 struct setlist *sl; 1282 1283 #define dotog(tl) if (tl->variable && tl->actionexplanation) { \ 1284 if (*tl->variable) { \ 1285 printf("will"); \ 1286 } else { \ 1287 printf("won't"); \ 1288 } \ 1289 printf(" %s.\n", tl->actionexplanation); \ 1290 } 1291 1292 #define doset(sl) if (sl->name && *sl->name != ' ') { \ 1293 if (sl->handler == 0) \ 1294 printf("%-15s [%s]\n", sl->name, control(*sl->charp)); \ 1295 else \ 1296 printf("%-15s \"%s\"\n", sl->name, (char *)sl->charp); \ 1297 } 1298 1299 if (argc == 1) { 1300 for (tl = Togglelist; tl->name; tl++) { 1301 dotog(tl); 1302 } 1303 printf("\n"); 1304 for (sl = Setlist; sl->name; sl++) { 1305 doset(sl); 1306 } 1307 } else { 1308 int i; 1309 1310 for (i = 1; i < argc; i++) { 1311 sl = getset(argv[i]); 1312 tl = GETTOGGLE(argv[i]); 1313 if (Ambiguous(sl) || Ambiguous(tl)) { 1314 printf("?Ambiguous argument '%s'.\n", argv[i]); 1315 return 0; 1316 } else if (!sl && !tl) { 1317 printf("?Unknown argument '%s'.\n", argv[i]); 1318 return 0; 1319 } else { 1320 if (tl) { 1321 dotog(tl); 1322 } 1323 if (sl) { 1324 doset(sl); 1325 } 1326 } 1327 } 1328 } 1329 /*@*/optionstatus(); 1330 return 1; 1331 #undef doset 1332 #undef dotog 1333 } 1334 1335 /* 1336 * The following are the data structures, and many of the routines, 1337 * relating to command processing. 1338 */ 1339 1340 /* 1341 * Set the escape character. 1342 */ 1343 static int 1344 setescape(argc, argv) 1345 int argc; 1346 char *argv[]; 1347 { 1348 register char *arg; 1349 char buf[50]; 1350 1351 printf( 1352 "Deprecated usage - please use 'set escape%s%s' in the future.\n", 1353 (argc > 2)? " ":"", (argc > 2)? argv[1]: ""); 1354 if (argc > 2) 1355 arg = argv[1]; 1356 else { 1357 printf("new escape character: "); 1358 (void) fgets(buf, sizeof(buf), stdin); 1359 arg = buf; 1360 } 1361 if (arg[0] != '\0') 1362 escape = arg[0]; 1363 if (!In3270) { 1364 printf("Escape character is '%s'.\n", control(escape)); 1365 } 1366 (void) fflush(stdout); 1367 return 1; 1368 } 1369 1370 /*VARARGS*/ 1371 static int 1372 togcrmod(argc, argv) 1373 int argc; 1374 char *argv[]; 1375 { 1376 crmod = !crmod; 1377 printf("Deprecated usage - please use 'toggle crmod' in the future.\n"); 1378 printf("%s map carriage return on output.\n", crmod ? "Will" : "Won't"); 1379 (void) fflush(stdout); 1380 return 1; 1381 } 1382 1383 /*VARARGS*/ 1384 int 1385 suspend(argc, argv) 1386 int argc; 1387 char *argv[]; 1388 { 1389 #ifdef SIGTSTP 1390 setcommandmode(); 1391 { 1392 long oldrows, oldcols, newrows, newcols, err; 1393 1394 err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 1395 (void) kill(0, SIGTSTP); 1396 /* 1397 * If we didn't get the window size before the SUSPEND, but we 1398 * can get them now (?), then send the NAWS to make sure that 1399 * we are set up for the right window size. 1400 */ 1401 if (TerminalWindowSize(&newrows, &newcols) && connected && 1402 (err || ((oldrows != newrows) || (oldcols != newcols)))) { 1403 sendnaws(); 1404 } 1405 } 1406 /* reget parameters in case they were changed */ 1407 TerminalSaveState(); 1408 setconnmode(0); 1409 #else 1410 printf("Suspend is not supported. Try the '!' command instead\n"); 1411 #endif 1412 return 1; 1413 } 1414 1415 #if !defined(TN3270) 1416 /*ARGSUSED*/ 1417 int 1418 shell(argc, argv) 1419 int argc; 1420 char *argv[]; 1421 { 1422 long oldrows, oldcols, newrows, newcols, err; 1423 1424 #ifdef __GNUC__ 1425 (void) &err; /* XXX avoid GCC warning */ 1426 #endif 1427 1428 setcommandmode(); 1429 1430 err = (TerminalWindowSize(&oldrows, &oldcols) == 0) ? 1 : 0; 1431 switch(vfork()) { 1432 case -1: 1433 perror("Fork failed\n"); 1434 break; 1435 1436 case 0: 1437 { 1438 /* 1439 * Fire up the shell in the child. 1440 */ 1441 register char *shellp, *shellname; 1442 1443 shellp = getenv("SHELL"); 1444 if (shellp == NULL) 1445 shellp = "/bin/sh"; 1446 if ((shellname = strrchr(shellp, '/')) == 0) 1447 shellname = shellp; 1448 else 1449 shellname++; 1450 if (argc > 1) 1451 execl(shellp, shellname, "-c", &saveline[1], 0); 1452 else 1453 execl(shellp, shellname, 0); 1454 perror("Execl"); 1455 _exit(1); 1456 } 1457 default: 1458 (void)wait((int *)0); /* Wait for the shell to complete */ 1459 1460 if (TerminalWindowSize(&newrows, &newcols) && connected && 1461 (err || ((oldrows != newrows) || (oldcols != newcols)))) { 1462 sendnaws(); 1463 } 1464 break; 1465 } 1466 return 1; 1467 } 1468 #endif /* !defined(TN3270) */ 1469 1470 /*VARARGS*/ 1471 static int 1472 bye(argc, argv) 1473 int argc; /* Number of arguments */ 1474 char *argv[]; /* arguments */ 1475 { 1476 extern int resettermname; 1477 1478 if (connected) { 1479 (void) shutdown(net, 2); 1480 printf("Connection closed.\n"); 1481 (void) NetClose(net); 1482 connected = 0; 1483 resettermname = 1; 1484 #if defined(AUTHENTICATION) 1485 auth_encrypt_connect(connected); 1486 #endif /* defined(AUTHENTICATION) */ 1487 /* reset options */ 1488 tninit(); 1489 #if defined(TN3270) 1490 SetIn3270(); /* Get out of 3270 mode */ 1491 #endif /* defined(TN3270) */ 1492 } 1493 if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) { 1494 longjmp(toplevel, 1); 1495 /* NOTREACHED */ 1496 } 1497 return 1; /* Keep lint, etc., happy */ 1498 } 1499 1500 /*VARARGS*/ 1501 int 1502 quit(argc, argv) 1503 int argc; 1504 char *argv[]; 1505 { 1506 (void) call(bye, "bye", "fromquit", 0); 1507 Exit(0); 1508 /*NOTREACHED*/ 1509 } 1510 1511 /*VARARGS*/ 1512 int 1513 logout(argc, argv) 1514 int argc; 1515 char *argv[]; 1516 { 1517 send_do(TELOPT_LOGOUT, 1); 1518 (void) netflush(); 1519 return 1; 1520 } 1521 1522 1523 /* 1524 * The SLC command. 1525 */ 1526 1527 struct slclist { 1528 char *name; 1529 char *help; 1530 void (*handler) P((int)); 1531 int arg; 1532 }; 1533 1534 struct slclist SlcList[] = { 1535 { "export", "Use local special character definitions", 1536 slc_mode_export, 0 }, 1537 { "import", "Use remote special character definitions", 1538 slc_mode_import, 1 }, 1539 { "check", "Verify remote special character definitions", 1540 slc_mode_import, 0 }, 1541 { "help", 0, slc_help, 0 }, 1542 { "?", "Print help information", slc_help, 0 }, 1543 { 0 }, 1544 }; 1545 1546 static void 1547 slc_help(n) 1548 int n; 1549 { 1550 struct slclist *c; 1551 1552 for (c = SlcList; c->name; c++) { 1553 if (c->help) { 1554 if (*c->help) 1555 printf("%-15s %s\n", c->name, c->help); 1556 else 1557 printf("\n"); 1558 } 1559 } 1560 } 1561 1562 static struct slclist * 1563 getslc(name) 1564 char *name; 1565 { 1566 return (struct slclist *) 1567 genget(name, (char **) SlcList, sizeof(struct slclist)); 1568 } 1569 1570 static int 1571 slccmd(argc, argv) 1572 int argc; 1573 char *argv[]; 1574 { 1575 struct slclist *c; 1576 1577 if (argc != 2) { 1578 fprintf(stderr, 1579 "Need an argument to 'slc' command. 'slc ?' for help.\n"); 1580 return 0; 1581 } 1582 c = getslc(argv[1]); 1583 if (c == 0) { 1584 fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\n", 1585 argv[1]); 1586 return 0; 1587 } 1588 if (Ambiguous(c)) { 1589 fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\n", 1590 argv[1]); 1591 return 0; 1592 } 1593 (*c->handler)(c->arg); 1594 slcstate(); 1595 return 1; 1596 } 1597 1598 /* 1599 * The ENVIRON command. 1600 */ 1601 1602 struct envlist { 1603 char *name; 1604 char *help; 1605 struct env_lst *(*handler) P((unsigned char *, unsigned char *)); 1606 int narg; 1607 }; 1608 1609 struct envlist EnvList[] = { 1610 { "define", "Define an environment variable", 1611 env_define, 2 }, 1612 { "undefine", "Undefine an environment variable", 1613 env_undefine, 1 }, 1614 { "export", "Mark an environment variable for automatic export", 1615 env_export, 1 }, 1616 { "unexport", "Don't mark an environment variable for automatic export", 1617 env_unexport, 1 }, 1618 { "send", "Send an environment variable", env_send, 1 }, 1619 { "list", "List the current environment variables", 1620 env_list, 0 }, 1621 #if defined(OLD_ENVIRON) && defined(ENV_HACK) 1622 { "varval", "Reverse VAR and VALUE (auto, right, wrong, status)", 1623 env_varval, 1 }, 1624 #endif 1625 { "help", 0, env_help, 0 }, 1626 { "?", "Print help information", env_help, 0 }, 1627 { 0 }, 1628 }; 1629 1630 static struct env_lst * 1631 env_help(us1, us2) 1632 unsigned char *us1, *us2; 1633 { 1634 struct envlist *c; 1635 1636 for (c = EnvList; c->name; c++) { 1637 if (c->help) { 1638 if (*c->help) 1639 printf("%-15s %s\n", c->name, c->help); 1640 else 1641 printf("\n"); 1642 } 1643 } 1644 return NULL; 1645 } 1646 1647 static struct envlist * 1648 getenvcmd(name) 1649 char *name; 1650 { 1651 return (struct envlist *) 1652 genget(name, (char **) EnvList, sizeof(struct envlist)); 1653 } 1654 1655 int 1656 env_cmd(argc, argv) 1657 int argc; 1658 char *argv[]; 1659 { 1660 struct envlist *c; 1661 1662 if (argc < 2) { 1663 fprintf(stderr, 1664 "Need an argument to 'environ' command. 'environ ?' for help.\n"); 1665 return 0; 1666 } 1667 c = getenvcmd(argv[1]); 1668 if (c == 0) { 1669 fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\n", 1670 argv[1]); 1671 return 0; 1672 } 1673 if (Ambiguous(c)) { 1674 fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\n", 1675 argv[1]); 1676 return 0; 1677 } 1678 if (c->narg + 2 != argc) { 1679 fprintf(stderr, 1680 "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\n", 1681 c->narg < argc + 2 ? "only " : "", 1682 c->narg, c->narg == 1 ? "" : "s", c->name); 1683 return 0; 1684 } 1685 (*c->handler)(argv[2], argv[3]); 1686 return 1; 1687 } 1688 1689 struct env_lst { 1690 struct env_lst *next; /* pointer to next structure */ 1691 struct env_lst *prev; /* pointer to previous structure */ 1692 unsigned char *var; /* pointer to variable name */ 1693 unsigned char *value; /* pointer to variable value */ 1694 int export; /* 1 -> export with default list of variables */ 1695 int welldefined; /* A well defined variable */ 1696 }; 1697 1698 struct env_lst envlisthead; 1699 1700 struct env_lst * 1701 env_find(var) 1702 unsigned char *var; 1703 { 1704 register struct env_lst *ep; 1705 1706 for (ep = envlisthead.next; ep; ep = ep->next) { 1707 if (strcmp((char *)ep->var, (char *)var) == 0) 1708 return(ep); 1709 } 1710 return(NULL); 1711 } 1712 1713 void 1714 env_init() 1715 { 1716 extern char **environ; 1717 register char **epp, *cp; 1718 register struct env_lst *ep; 1719 1720 for (epp = environ; *epp; epp++) { 1721 if ((cp = strchr(*epp, '=')) != NULL) { 1722 *cp = '\0'; 1723 ep = env_define((unsigned char *)*epp, 1724 (unsigned char *)cp+1); 1725 ep->export = 0; 1726 *cp = '='; 1727 } 1728 } 1729 /* 1730 * Special case for DISPLAY variable. If it is ":0.0" or 1731 * "unix:0.0", we have to get rid of "unix" and insert our 1732 * hostname. 1733 */ 1734 if ((ep = env_find("DISPLAY")) 1735 && ((*ep->value == ':') 1736 || (strncmp((char *)ep->value, "unix:", 5) == 0))) { 1737 char hbuf[MAXHOSTNAMELEN + 1]; 1738 char *cp2 = strchr((char *)ep->value, ':'); 1739 1740 gethostname(hbuf, sizeof hbuf); 1741 hbuf[sizeof(hbuf) - 1] = '\0'; 1742 cp = (char *)malloc(strlen(hbuf) + strlen(cp2) + 1); 1743 sprintf((char *)cp, "%s%s", hbuf, cp2); 1744 free(ep->value); 1745 ep->value = (unsigned char *)cp; 1746 } 1747 /* 1748 * If USER is not defined, but LOGNAME is, then add 1749 * USER with the value from LOGNAME. By default, we 1750 * don't export the USER variable. 1751 */ 1752 if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) { 1753 env_define((unsigned char *)"USER", ep->value); 1754 env_unexport((unsigned char *)"USER", NULL); 1755 } 1756 env_export((unsigned char *)"DISPLAY", NULL); 1757 env_export((unsigned char *)"PRINTER", NULL); 1758 } 1759 1760 struct env_lst * 1761 env_define(var, value) 1762 unsigned char *var, *value; 1763 { 1764 register struct env_lst *ep; 1765 1766 if ((ep = env_find(var)) != NULL) { 1767 if (ep->var) 1768 free(ep->var); 1769 if (ep->value) 1770 free(ep->value); 1771 } else { 1772 ep = (struct env_lst *)malloc(sizeof(struct env_lst)); 1773 ep->next = envlisthead.next; 1774 envlisthead.next = ep; 1775 ep->prev = &envlisthead; 1776 if (ep->next) 1777 ep->next->prev = ep; 1778 } 1779 ep->welldefined = opt_welldefined(var); 1780 ep->export = 1; 1781 ep->var = (unsigned char *)strdup((char *)var); 1782 ep->value = (unsigned char *)strdup((char *)value); 1783 return(ep); 1784 } 1785 1786 struct env_lst * 1787 env_undefine(var, d) 1788 unsigned char *var; 1789 unsigned char *d; 1790 { 1791 register struct env_lst *ep; 1792 1793 if ((ep = env_find(var)) != NULL) { 1794 ep->prev->next = ep->next; 1795 if (ep->next) 1796 ep->next->prev = ep->prev; 1797 if (ep->var) 1798 free(ep->var); 1799 if (ep->value) 1800 free(ep->value); 1801 free(ep); 1802 } 1803 return NULL; 1804 } 1805 1806 struct env_lst * 1807 env_export(var, d) 1808 unsigned char *var; 1809 unsigned char *d; 1810 { 1811 register struct env_lst *ep; 1812 1813 if ((ep = env_find(var)) != NULL) 1814 ep->export = 1; 1815 return NULL; 1816 } 1817 1818 struct env_lst * 1819 env_unexport(var, d) 1820 unsigned char *var; 1821 unsigned char *d; 1822 { 1823 register struct env_lst *ep; 1824 1825 if ((ep = env_find(var)) != NULL) 1826 ep->export = 0; 1827 return NULL; 1828 } 1829 1830 struct env_lst * 1831 env_send(var, d) 1832 unsigned char *var; 1833 unsigned char *d; 1834 { 1835 register struct env_lst *ep; 1836 1837 if (my_state_is_wont(TELOPT_NEW_ENVIRON) 1838 #ifdef OLD_ENVIRON 1839 && my_state_is_wont(TELOPT_OLD_ENVIRON) 1840 #endif 1841 ) { 1842 fprintf(stderr, 1843 "Cannot send '%s': Telnet ENVIRON option not enabled\n", 1844 var); 1845 return NULL; 1846 } 1847 ep = env_find(var); 1848 if (ep == 0) { 1849 fprintf(stderr, "Cannot send '%s': variable not defined\n", 1850 var); 1851 return NULL; 1852 } 1853 env_opt_start_info(); 1854 env_opt_add(ep->var); 1855 env_opt_end(0); 1856 return NULL; 1857 } 1858 1859 struct env_lst * 1860 env_list(d1, d2) 1861 unsigned char *d1, *d2; 1862 { 1863 register struct env_lst *ep; 1864 1865 for (ep = envlisthead.next; ep; ep = ep->next) { 1866 printf("%c %-20s %s\n", ep->export ? '*' : ' ', 1867 ep->var, ep->value); 1868 } 1869 return NULL; 1870 } 1871 1872 unsigned char * 1873 env_default(init, welldefined) 1874 int init; 1875 int welldefined; 1876 { 1877 static struct env_lst *nep = NULL; 1878 1879 if (init) { 1880 nep = &envlisthead; 1881 return NULL; 1882 } 1883 if (nep) { 1884 while ((nep = nep->next) != NULL) { 1885 if (nep->export && (nep->welldefined == welldefined)) 1886 return(nep->var); 1887 } 1888 } 1889 return(NULL); 1890 } 1891 1892 unsigned char * 1893 env_getvalue(var) 1894 unsigned char *var; 1895 { 1896 register struct env_lst *ep; 1897 1898 if ((ep = env_find(var)) != NULL) 1899 return(ep->value); 1900 return(NULL); 1901 } 1902 1903 #if defined(OLD_ENVIRON) && defined(ENV_HACK) 1904 void 1905 env_varval(what) 1906 unsigned char *what; 1907 { 1908 extern int old_env_var, old_env_value, env_auto; 1909 int len = strlen((char *)what); 1910 1911 if (len == 0) 1912 goto unknown; 1913 1914 if (strncasecmp((char *)what, "status", len) == 0) { 1915 if (env_auto) 1916 printf("%s%s", "VAR and VALUE are/will be ", 1917 "determined automatically\n"); 1918 if (old_env_var == OLD_ENV_VAR) 1919 printf("VAR and VALUE set to correct definitions\n"); 1920 else 1921 printf("VAR and VALUE definitions are reversed\n"); 1922 } else if (strncasecmp((char *)what, "auto", len) == 0) { 1923 env_auto = 1; 1924 old_env_var = OLD_ENV_VALUE; 1925 old_env_value = OLD_ENV_VAR; 1926 } else if (strncasecmp((char *)what, "right", len) == 0) { 1927 env_auto = 0; 1928 old_env_var = OLD_ENV_VAR; 1929 old_env_value = OLD_ENV_VALUE; 1930 } else if (strncasecmp((char *)what, "wrong", len) == 0) { 1931 env_auto = 0; 1932 old_env_var = OLD_ENV_VALUE; 1933 old_env_value = OLD_ENV_VAR; 1934 } else { 1935 unknown: 1936 printf("Unknown \"varval\" command. (\"auto\", \"right\", \"wrong\", \"status\")\n"); 1937 } 1938 } 1939 #endif 1940 1941 #if defined(AUTHENTICATION) 1942 /* 1943 * The AUTHENTICATE command. 1944 */ 1945 1946 struct authlist { 1947 char *name; 1948 char *help; 1949 int (*handler) P((char *)); 1950 int narg; 1951 }; 1952 1953 struct authlist AuthList[] = { 1954 { "status", "Display current status of authentication information", 1955 auth_status, 0 }, 1956 { "disable", "Disable an authentication type ('auth disable ?' for more)", 1957 auth_disable, 1 }, 1958 { "enable", "Enable an authentication type ('auth enable ?' for more)", 1959 auth_enable, 1 }, 1960 { "help", 0, auth_help, 0 }, 1961 { "?", "Print help information", auth_help, 0 }, 1962 { 0 }, 1963 }; 1964 1965 static int 1966 auth_help(s) 1967 char *s; 1968 { 1969 struct authlist *c; 1970 1971 for (c = AuthList; c->name; c++) { 1972 if (c->help) { 1973 if (*c->help) 1974 printf("%-15s %s\n", c->name, c->help); 1975 else 1976 printf("\n"); 1977 } 1978 } 1979 return 0; 1980 } 1981 1982 int 1983 auth_cmd(argc, argv) 1984 int argc; 1985 char *argv[]; 1986 { 1987 struct authlist *c; 1988 1989 if (argc < 2) { 1990 fprintf(stderr, 1991 "Need an argument to 'auth' command. 'auth ?' for help.\n"); 1992 return 0; 1993 } 1994 1995 c = (struct authlist *) 1996 genget(argv[1], (char **) AuthList, sizeof(struct authlist)); 1997 if (c == 0) { 1998 fprintf(stderr, "'%s': unknown argument ('auth ?' for help).\n", 1999 argv[1]); 2000 return 0; 2001 } 2002 if (Ambiguous(c)) { 2003 fprintf(stderr, "'%s': ambiguous argument ('auth ?' for help).\n", 2004 argv[1]); 2005 return 0; 2006 } 2007 if (c->narg + 2 != argc) { 2008 fprintf(stderr, 2009 "Need %s%d argument%s to 'auth %s' command. 'auth ?' for help.\n", 2010 c->narg < argc + 2 ? "only " : "", 2011 c->narg, c->narg == 1 ? "" : "s", c->name); 2012 return 0; 2013 } 2014 return((*c->handler)(argv[2])); 2015 } 2016 #endif 2017 2018 2019 #if defined(unix) && defined(TN3270) 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 #ifdef notdef 2047 printf("\tFlags are 0x%x: %s\n", res, decodeflags(res)); 2048 #endif 2049 } 2050 #endif /* defined(unix) && defined(TN3270) */ 2051 2052 /* 2053 * Print status about the connection. 2054 */ 2055 /*ARGSUSED*/ 2056 static int 2057 status(argc, argv) 2058 int argc; 2059 char *argv[]; 2060 { 2061 if (connected) { 2062 printf("Connected to %s.\n", hostname); 2063 if ((argc < 2) || strcmp(argv[1], "notmuch")) { 2064 int mode = getconnmode(); 2065 2066 if (my_want_state_is_will(TELOPT_LINEMODE)) { 2067 printf("Operating with LINEMODE option\n"); 2068 printf("%s line editing\n", (mode&MODE_EDIT) ? "Local" : "No"); 2069 printf("%s catching of signals\n", 2070 (mode&MODE_TRAPSIG) ? "Local" : "No"); 2071 slcstate(); 2072 #ifdef KLUDGELINEMODE 2073 } else if (kludgelinemode && my_want_state_is_dont(TELOPT_SGA)) { 2074 printf("Operating in obsolete linemode\n"); 2075 #endif 2076 } else { 2077 printf("Operating in single character mode\n"); 2078 if (localchars) 2079 printf("Catching signals locally\n"); 2080 } 2081 printf("%s character echo\n", (mode&MODE_ECHO) ? "Local" : "Remote"); 2082 if (my_want_state_is_will(TELOPT_LFLOW)) 2083 printf("%s flow control\n", (mode&MODE_FLOW) ? "Local" : "No"); 2084 } 2085 } else { 2086 printf("No connection.\n"); 2087 } 2088 # if !defined(TN3270) 2089 printf("Escape character is '%s'.\n", control(escape)); 2090 (void) fflush(stdout); 2091 # else /* !defined(TN3270) */ 2092 if ((!In3270) && ((argc < 2) || strcmp(argv[1], "notmuch"))) { 2093 printf("Escape character is '%s'.\n", control(escape)); 2094 } 2095 # if defined(unix) 2096 if ((argc >= 2) && !strcmp(argv[1], "everything")) { 2097 printf("SIGIO received %d time%s.\n", 2098 sigiocount, (sigiocount == 1)? "":"s"); 2099 if (In3270) { 2100 printf("Process ID %d, process group %d.\n", 2101 getpid(), getpgrp()); 2102 printf("Terminal input:\n"); 2103 filestuff(tin); 2104 printf("Terminal output:\n"); 2105 filestuff(tout); 2106 printf("Network socket:\n"); 2107 filestuff(net); 2108 } 2109 } 2110 if (In3270 && transcom) { 2111 printf("Transparent mode command is '%s'.\n", transcom); 2112 } 2113 # endif /* defined(unix) */ 2114 (void) fflush(stdout); 2115 if (In3270) { 2116 return 0; 2117 } 2118 # endif /* defined(TN3270) */ 2119 return 1; 2120 } 2121 2122 #ifdef SIGINFO 2123 /* 2124 * Function that gets called when SIGINFO is received. 2125 */ 2126 int 2127 ayt_status() 2128 { 2129 return 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 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2143 char *srp = 0; 2144 unsigned long srlen; 2145 #endif 2146 char *cmd, *hostp = 0, *portp = 0; 2147 const char *user = 0; 2148 #ifdef __GNUC__ /* Avoid vfork clobbering */ 2149 (void) &user; 2150 #endif 2151 2152 /* clear the socket address prior to use */ 2153 memset((char *)&sin, 0, sizeof(sin)); 2154 2155 if (connected) { 2156 printf("?Already connected to %s\n", hostname); 2157 setuid(getuid()); 2158 return 0; 2159 } 2160 if (argc < 2) { 2161 (void) strcpy(line, "open "); 2162 printf("(to) "); 2163 (void) fgets(&line[strlen(line)], sizeof(line) - strlen(line), stdin); 2164 makeargv(); 2165 argc = margc; 2166 argv = margv; 2167 } 2168 cmd = *argv; 2169 --argc; ++argv; 2170 while (argc) { 2171 if (strcmp(*argv, "help") == 0 || isprefix(*argv, "?")) 2172 goto usage; 2173 if (strcmp(*argv, "-l") == 0) { 2174 --argc; ++argv; 2175 if (argc == 0) 2176 goto usage; 2177 user = *argv++; 2178 --argc; 2179 continue; 2180 } 2181 if (strcmp(*argv, "-a") == 0) { 2182 --argc; ++argv; 2183 autologin = 1; 2184 continue; 2185 } 2186 if (hostp == 0) { 2187 hostp = *argv++; 2188 --argc; 2189 continue; 2190 } 2191 if (portp == 0) { 2192 portp = *argv++; 2193 --argc; 2194 continue; 2195 } 2196 usage: 2197 printf("usage: %s [-l user] [-a] host-name [port]\n", cmd); 2198 setuid(getuid()); 2199 return 0; 2200 } 2201 if (hostp == 0) 2202 goto usage; 2203 2204 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2205 if (hostp[0] == '@' || hostp[0] == '!') { 2206 if ((hostname = strrchr(hostp, ':')) == NULL) 2207 hostname = strrchr(hostp, '@'); 2208 hostname++; 2209 srp = 0; 2210 temp = sourceroute(hostp, &srp, &srlen); 2211 if (temp == 0) { 2212 herror(srp); 2213 setuid(getuid()); 2214 return 0; 2215 } else if (temp == -1) { 2216 printf("Bad source route option: %s\n", hostp); 2217 setuid(getuid()); 2218 return 0; 2219 } else { 2220 sin.sin_addr.s_addr = temp; 2221 sin.sin_family = AF_INET; 2222 } 2223 } else { 2224 #endif 2225 temp = inet_addr(hostp); 2226 if (temp != INADDR_NONE) { 2227 sin.sin_addr.s_addr = temp; 2228 sin.sin_family = AF_INET; 2229 host = gethostbyaddr((char *)&temp, sizeof(temp), AF_INET); 2230 if (host) 2231 (void) strcpy(_hostname, host->h_name); 2232 else 2233 (void) strcpy(_hostname, hostp); 2234 hostname = _hostname; 2235 } else { 2236 host = gethostbyname(hostp); 2237 if (host) { 2238 sin.sin_family = host->h_addrtype; 2239 #if defined(h_addr) /* In 4.3, this is a #define */ 2240 memmove((caddr_t)&sin.sin_addr, 2241 host->h_addr_list[0], host->h_length); 2242 #else /* defined(h_addr) */ 2243 memmove((caddr_t)&sin.sin_addr, host->h_addr, host->h_length); 2244 #endif /* defined(h_addr) */ 2245 strncpy(_hostname, host->h_name, sizeof(_hostname)); 2246 _hostname[sizeof(_hostname)-1] = '\0'; 2247 hostname = _hostname; 2248 } else { 2249 herror(hostp); 2250 setuid(getuid()); 2251 return 0; 2252 } 2253 } 2254 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2255 } 2256 #endif 2257 if (portp) { 2258 if (*portp == '-') { 2259 portp++; 2260 telnetport = 1; 2261 } else 2262 telnetport = 0; 2263 sin.sin_port = atoi(portp); 2264 if (sin.sin_port == 0) { 2265 sp = getservbyname(portp, "tcp"); 2266 if (sp) 2267 sin.sin_port = sp->s_port; 2268 else { 2269 printf("%s: bad port number\n", portp); 2270 setuid(getuid()); 2271 return 0; 2272 } 2273 } else { 2274 #if !defined(htons) 2275 u_short htons P((unsigned short)); 2276 #endif /* !defined(htons) */ 2277 sin.sin_port = htons(sin.sin_port); 2278 } 2279 } else { 2280 if (sp == 0) { 2281 sp = getservbyname("telnet", "tcp"); 2282 if (sp == 0) { 2283 fprintf(stderr, "telnet: tcp/telnet: unknown service\n"); 2284 setuid(getuid()); 2285 return 0; 2286 } 2287 sin.sin_port = sp->s_port; 2288 } 2289 telnetport = 1; 2290 } 2291 printf("Trying %s...\n", inet_ntoa(sin.sin_addr)); 2292 do { 2293 net = socket(AF_INET, SOCK_STREAM, 0); 2294 setuid(getuid()); 2295 if (net < 0) { 2296 perror("telnet: socket"); 2297 return 0; 2298 } 2299 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2300 if (srp && setsockopt(net, IPPROTO_IP, IP_OPTIONS, (char *)srp, srlen) < 0) 2301 perror("setsockopt (IP_OPTIONS)"); 2302 #endif 2303 #if defined(IPPROTO_IP) && defined(IP_TOS) 2304 { 2305 # if defined(HAS_GETTOS) 2306 struct tosent *tp; 2307 if (tos < 0 && (tp = gettosbyname("telnet", "tcp"))) 2308 tos = tp->t_tos; 2309 # endif 2310 if (tos < 0) 2311 tos = IPTOS_LOWDELAY; /* Low Delay bit */ 2312 if (tos 2313 && (setsockopt(net, IPPROTO_IP, IP_TOS, 2314 (char *)&tos, sizeof(int)) < 0) 2315 && (errno != ENOPROTOOPT)) 2316 perror("telnet: setsockopt (IP_TOS) (ignored)"); 2317 } 2318 #endif /* defined(IPPROTO_IP) && defined(IP_TOS) */ 2319 2320 if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) { 2321 perror("setsockopt (SO_DEBUG)"); 2322 } 2323 2324 if (connect(net, (struct sockaddr *)&sin, sizeof (sin)) < 0) { 2325 #if defined(h_addr) /* In 4.3, this is a #define */ 2326 if (host && host->h_addr_list[1]) { 2327 int oerrno = errno; 2328 2329 fprintf(stderr, "telnet: connect to address %s: ", 2330 inet_ntoa(sin.sin_addr)); 2331 errno = oerrno; 2332 perror((char *)0); 2333 host->h_addr_list++; 2334 memmove((caddr_t)&sin.sin_addr, 2335 host->h_addr_list[0], host->h_length); 2336 (void) NetClose(net); 2337 continue; 2338 } 2339 #endif /* defined(h_addr) */ 2340 perror("telnet: Unable to connect to remote host"); 2341 return 0; 2342 } 2343 connected++; 2344 #if defined(AUTHENTICATION) 2345 auth_encrypt_connect(connected); 2346 #endif /* defined(AUTHENTICATION) */ 2347 } while (connected == 0); 2348 cmdrc(hostp, hostname); 2349 if (autologin && user == NULL) { 2350 struct passwd *pw; 2351 2352 user = getenv("USER"); 2353 if (user == NULL || 2354 ((pw = getpwnam(user)) && pw->pw_uid != getuid())) { 2355 if ((pw = getpwuid(getuid())) != NULL) 2356 user = pw->pw_name; 2357 else 2358 user = NULL; 2359 } 2360 } 2361 if (user) { 2362 env_define((unsigned char *)"USER", (unsigned char *)user); 2363 env_export((unsigned char *)"USER", NULL); 2364 } 2365 (void) call(status, "status", "notmuch", 0); 2366 if (setjmp(peerdied) == 0) 2367 telnet(user); 2368 (void) NetClose(net); 2369 ExitString("Connection closed by foreign host.\n",1); 2370 /*NOTREACHED*/ 2371 } 2372 2373 #define HELPINDENT ((int)sizeof ("connect")) 2374 2375 static char 2376 openhelp[] = "connect to a site", 2377 closehelp[] = "close current connection", 2378 logouthelp[] = "forcibly logout remote user and close the connection", 2379 quithelp[] = "exit telnet", 2380 statushelp[] = "print status information", 2381 helphelp[] = "print help information", 2382 sendhelp[] = "transmit special characters ('send ?' for more)", 2383 sethelp[] = "set operating parameters ('set ?' for more)", 2384 unsethelp[] = "unset operating parameters ('unset ?' for more)", 2385 togglestring[] ="toggle operating parameters ('toggle ?' for more)", 2386 slchelp[] = "change state of special charaters ('slc ?' for more)", 2387 displayhelp[] = "display operating parameters", 2388 #if defined(TN3270) && defined(unix) 2389 transcomhelp[] = "specify Unix command for transparent mode pipe", 2390 #endif /* defined(TN3270) && defined(unix) */ 2391 #if defined(AUTHENTICATION) 2392 authhelp[] = "turn on (off) authentication ('auth ?' for more)", 2393 #endif 2394 #if defined(unix) 2395 zhelp[] = "suspend telnet", 2396 #endif /* defined(unix) */ 2397 shellhelp[] = "invoke a subshell", 2398 envhelp[] = "change environment variables ('environ ?' for more)", 2399 modestring[] = "try to enter line or character mode ('mode ?' for more)"; 2400 2401 static Command cmdtab[] = { 2402 { "close", closehelp, bye, 1 }, 2403 { "logout", logouthelp, logout, 1 }, 2404 { "display", displayhelp, display, 0 }, 2405 { "mode", modestring, modecmd, 0 }, 2406 { "open", openhelp, tn, 0 }, 2407 { "quit", quithelp, quit, 0 }, 2408 { "send", sendhelp, sendcmd, 0 }, 2409 { "set", sethelp, setcmd, 0 }, 2410 { "unset", unsethelp, unsetcmd, 0 }, 2411 { "status", statushelp, status, 0 }, 2412 { "toggle", togglestring, toggle, 0 }, 2413 { "slc", slchelp, slccmd, 0 }, 2414 #if defined(TN3270) && defined(unix) 2415 { "transcom", transcomhelp, settranscom, 0 }, 2416 #endif /* defined(TN3270) && defined(unix) */ 2417 #if defined(AUTHENTICATION) 2418 { "auth", authhelp, auth_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 { NULL, NULL, NULL, 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 { NULL, NULL, NULL, 0 } 2441 }; 2442 2443 2444 /* 2445 * Call routine with argc, argv set from args (terminated by 0). 2446 */ 2447 2448 /*VARARGS1*/ 2449 static int 2450 #ifdef __STDC__ 2451 call(intrtn_t routine, ...) 2452 #else 2453 call(va_alist) 2454 va_dcl 2455 #endif 2456 { 2457 va_list ap; 2458 char *args[100]; 2459 int argno = 0; 2460 #ifndef __STDC__ 2461 intrtn_t routine; 2462 2463 va_start(ap); 2464 routine = (va_arg(ap, intrtn_t)); 2465 #else 2466 va_start(ap, routine); 2467 #endif 2468 2469 while ((args[argno++] = va_arg(ap, char *)) != 0) { 2470 ; 2471 } 2472 va_end(ap); 2473 return (*routine)(argno-1, args); 2474 } 2475 2476 2477 static Command * 2478 getcmd(name) 2479 char *name; 2480 { 2481 Command *cm; 2482 2483 if ((cm = (Command *) genget(name, (char **) cmdtab, sizeof(Command))) != NULL) 2484 return cm; 2485 return (Command *) genget(name, (char **) cmdtab2, sizeof(Command)); 2486 } 2487 2488 void 2489 command(top, tbuf, cnt) 2490 int top; 2491 char *tbuf; 2492 int cnt; 2493 { 2494 register Command *c; 2495 2496 setcommandmode(); 2497 if (!top) { 2498 putchar('\n'); 2499 #if defined(unix) 2500 } else { 2501 (void) signal(SIGINT, SIG_DFL); 2502 (void) signal(SIGQUIT, SIG_DFL); 2503 #endif /* defined(unix) */ 2504 } 2505 for (;;) { 2506 if (rlogin == _POSIX_VDISABLE) 2507 printf("%s> ", prompt); 2508 if (tbuf) { 2509 register char *cp; 2510 cp = line; 2511 while (cnt > 0 && (*cp++ = *tbuf++) != '\n') 2512 cnt--; 2513 tbuf = 0; 2514 if (cp == line || *--cp != '\n' || cp == line) 2515 goto getline; 2516 *cp = '\0'; 2517 if (rlogin == _POSIX_VDISABLE) 2518 printf("%s\n", line); 2519 } else { 2520 getline: 2521 if (rlogin != _POSIX_VDISABLE) 2522 printf("%s> ", prompt); 2523 if (fgets(line, sizeof(line), stdin) == NULL) { 2524 if (feof(stdin) || ferror(stdin)) { 2525 (void) quit(0, NULL); 2526 /*NOTREACHED*/ 2527 } 2528 break; 2529 } 2530 } 2531 if (line[0] == 0) 2532 break; 2533 makeargv(); 2534 if (margv[0] == 0) { 2535 break; 2536 } 2537 c = getcmd(margv[0]); 2538 if (Ambiguous(c)) { 2539 printf("?Ambiguous command\n"); 2540 continue; 2541 } 2542 if (c == 0) { 2543 printf("?Invalid command\n"); 2544 continue; 2545 } 2546 if (c->needconnect && !connected) { 2547 printf("?Need to be connected first.\n"); 2548 continue; 2549 } 2550 if ((*c->handler)(margc, margv)) { 2551 break; 2552 } 2553 } 2554 if (!top) { 2555 if (!connected) { 2556 longjmp(toplevel, 1); 2557 /*NOTREACHED*/ 2558 } 2559 #if defined(TN3270) 2560 if (shell_active == 0) { 2561 setconnmode(0); 2562 } 2563 #else /* defined(TN3270) */ 2564 setconnmode(0); 2565 #endif /* defined(TN3270) */ 2566 } 2567 } 2568 2569 /* 2570 * Help command. 2571 */ 2572 static int 2573 help(argc, argv) 2574 int argc; 2575 char *argv[]; 2576 { 2577 register Command *c; 2578 2579 if (argc == 1) { 2580 printf("Commands may be abbreviated. Commands are:\n\n"); 2581 for (c = cmdtab; c->name; c++) 2582 if (c->help) { 2583 printf("%-*s\t%s\n", HELPINDENT, c->name, 2584 c->help); 2585 } 2586 return 0; 2587 } 2588 while (--argc > 0) { 2589 register char *arg; 2590 arg = *++argv; 2591 c = getcmd(arg); 2592 if (Ambiguous(c)) 2593 printf("?Ambiguous help command %s\n", arg); 2594 else if (c == (Command *)0) 2595 printf("?Invalid help command %s\n", arg); 2596 else 2597 printf("%s\n", c->help); 2598 } 2599 return 0; 2600 } 2601 2602 static char *rcname = 0; 2603 static char rcbuf[128]; 2604 2605 void 2606 cmdrc(m1, m2) 2607 const char *m1, *m2; 2608 { 2609 register Command *c; 2610 FILE *rcfile; 2611 int gotmachine = 0; 2612 int l1 = strlen(m1); 2613 int l2 = strlen(m2); 2614 char m1save[64]; 2615 2616 if (skiprc) 2617 return; 2618 2619 strcpy(m1save, m1); 2620 m1 = m1save; 2621 2622 if (rcname == 0) { 2623 rcname = getenv("HOME"); 2624 if (rcname) 2625 strcpy(rcbuf, rcname); 2626 else 2627 rcbuf[0] = '\0'; 2628 strcat(rcbuf, "/.telnetrc"); 2629 rcname = rcbuf; 2630 } 2631 2632 if ((rcfile = fopen(rcname, "r")) == 0) { 2633 return; 2634 } 2635 2636 for (;;) { 2637 if (fgets(line, sizeof(line), rcfile) == NULL) 2638 break; 2639 if (line[0] == 0) 2640 break; 2641 if (line[0] == '#') 2642 continue; 2643 if (gotmachine) { 2644 if (!isspace((unsigned char)line[0])) 2645 gotmachine = 0; 2646 } 2647 if (gotmachine == 0) { 2648 if (isspace((unsigned char)line[0])) 2649 continue; 2650 if (strncasecmp(line, m1, l1) == 0) 2651 strncpy(line, &line[l1], sizeof(line) - l1); 2652 else if (strncasecmp(line, m2, l2) == 0) 2653 strncpy(line, &line[l2], sizeof(line) - l2); 2654 else if (strncasecmp(line, "DEFAULT", 7) == 0) 2655 strncpy(line, &line[7], sizeof(line) - 7); 2656 else 2657 continue; 2658 if (line[0] != ' ' && line[0] != '\t' && line[0] != '\n') 2659 continue; 2660 gotmachine = 1; 2661 } 2662 makeargv(); 2663 if (margv[0] == 0) 2664 continue; 2665 c = getcmd(margv[0]); 2666 if (Ambiguous(c)) { 2667 printf("?Ambiguous command: %s\n", margv[0]); 2668 continue; 2669 } 2670 if (c == 0) { 2671 printf("?Invalid command: %s\n", margv[0]); 2672 continue; 2673 } 2674 /* 2675 * This should never happen... 2676 */ 2677 if (c->needconnect && !connected) { 2678 printf("?Need to be connected first for %s.\n", margv[0]); 2679 continue; 2680 } 2681 (*c->handler)(margc, margv); 2682 } 2683 fclose(rcfile); 2684 } 2685 2686 #if defined(IP_OPTIONS) && defined(IPPROTO_IP) 2687 2688 /* 2689 * Source route is handed in as 2690 * [!]@hop1@hop2...[@|:]dst 2691 * If the leading ! is present, it is a 2692 * strict source route, otherwise it is 2693 * assmed to be a loose source route. 2694 * 2695 * We fill in the source route option as 2696 * hop1,hop2,hop3...dest 2697 * and return a pointer to hop1, which will 2698 * be the address to connect() to. 2699 * 2700 * Arguments: 2701 * arg: pointer to route list to decipher 2702 * 2703 * cpp: If *cpp is not equal to NULL, this is a 2704 * pointer to a pointer to a character array 2705 * that should be filled in with the option. 2706 * 2707 * lenp: pointer to an integer that contains the 2708 * length of *cpp if *cpp != NULL. 2709 * 2710 * Return values: 2711 * 2712 * Returns the address of the host to connect to. If the 2713 * return value is -1, there was a syntax error in the 2714 * option, either unknown characters, or too many hosts. 2715 * If the return value is 0, one of the hostnames in the 2716 * path is unknown, and *cpp is set to point to the bad 2717 * hostname. 2718 * 2719 * *cpp: If *cpp was equal to NULL, it will be filled 2720 * in with a pointer to our static area that has 2721 * the option filled in. This will be 32bit aligned. 2722 * 2723 * *lenp: This will be filled in with how long the option 2724 * pointed to by *cpp is. 2725 * 2726 */ 2727 unsigned long 2728 sourceroute(arg, cpp, lenp) 2729 char *arg; 2730 char **cpp; 2731 unsigned long *lenp; 2732 { 2733 static char lsr[44]; 2734 #ifdef sysV88 2735 static IOPTN ipopt; 2736 #endif 2737 char *cp, *cp2, *lsrp, *lsrep; 2738 register int tmp; 2739 struct in_addr sin_addr; 2740 register struct hostent *host = 0; 2741 register char c; 2742 2743 /* 2744 * Verify the arguments, and make sure we have 2745 * at least 7 bytes for the option. 2746 */ 2747 if (cpp == NULL || lenp == NULL) 2748 return((unsigned long)-1); 2749 if (*cpp != NULL && *lenp < 7) 2750 return((unsigned long)-1); 2751 /* 2752 * Decide whether we have a buffer passed to us, 2753 * or if we need to use our own static buffer. 2754 */ 2755 if (*cpp) { 2756 lsrp = *cpp; 2757 lsrep = lsrp + *lenp; 2758 } else { 2759 *cpp = lsrp = lsr; 2760 lsrep = lsrp + 44; 2761 } 2762 2763 cp = arg; 2764 2765 /* 2766 * Next, decide whether we have a loose source 2767 * route or a strict source route, and fill in 2768 * the begining of the option. 2769 */ 2770 #ifndef sysV88 2771 if (*cp == '!') { 2772 cp++; 2773 *lsrp++ = IPOPT_SSRR; 2774 } else 2775 *lsrp++ = IPOPT_LSRR; 2776 #else 2777 if (*cp == '!') { 2778 cp++; 2779 ipopt.io_type = IPOPT_SSRR; 2780 } else 2781 ipopt.io_type = IPOPT_LSRR; 2782 #endif 2783 2784 if (*cp != '@') 2785 return((unsigned long)-1); 2786 2787 #ifndef sysV88 2788 lsrp++; /* skip over length, we'll fill it in later */ 2789 *lsrp++ = 4; 2790 #endif 2791 2792 cp++; 2793 2794 sin_addr.s_addr = 0; 2795 2796 for (c = 0;;) { 2797 if (c == ':') 2798 cp2 = 0; 2799 else for (cp2 = cp; (c = *cp2) != '\0'; cp2++) { 2800 if (c == ',') { 2801 *cp2++ = '\0'; 2802 if (*cp2 == '@') 2803 cp2++; 2804 } else if (c == '@') { 2805 *cp2++ = '\0'; 2806 } else if (c == ':') { 2807 *cp2++ = '\0'; 2808 } else 2809 continue; 2810 break; 2811 } 2812 if (!c) 2813 cp2 = 0; 2814 2815 if ((tmp = inet_addr(cp)) != INADDR_NONE) { 2816 sin_addr.s_addr = tmp; 2817 } else if ((host = gethostbyname(cp)) != NULL) { 2818 #if defined(h_addr) 2819 memmove((caddr_t)&sin_addr, 2820 host->h_addr_list[0], host->h_length); 2821 #else 2822 memmove((caddr_t)&sin_addr, host->h_addr, host->h_length); 2823 #endif 2824 } else { 2825 *cpp = cp; 2826 return(0); 2827 } 2828 memmove(lsrp, (char *)&sin_addr, 4); 2829 lsrp += 4; 2830 if (cp2) 2831 cp = cp2; 2832 else 2833 break; 2834 /* 2835 * Check to make sure there is space for next address 2836 */ 2837 if (lsrp + 4 > lsrep) 2838 return((unsigned long)-1); 2839 } 2840 #ifndef sysV88 2841 if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) { 2842 *cpp = 0; 2843 *lenp = 0; 2844 return((unsigned long)-1); 2845 } 2846 *lsrp++ = IPOPT_NOP; /* 32 bit word align it */ 2847 *lenp = lsrp - *cpp; 2848 #else 2849 ipopt.io_len = lsrp - *cpp; 2850 if (ipopt.io_len <= 5) { /* Is 3 better ? */ 2851 *cpp = 0; 2852 *lenp = 0; 2853 return((unsigned long)-1); 2854 } 2855 *lenp = sizeof(ipopt); 2856 *cpp = (char *) &ipopt; 2857 #endif 2858 return(sin_addr.s_addr); 2859 } 2860 #endif 2861