1 /* 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)utilities.c 8.3 (Berkeley) 5/30/95 30 * $FreeBSD: src/crypto/telnet/telnet/utilities.c,v 1.2.8.2 2002/04/13 10:59:08 markm Exp $ 31 */ 32 33 #define TELOPTS 34 #define TELCMDS 35 #define SLC_NAMES 36 #include <arpa/telnet.h> 37 #include <sys/types.h> 38 #include <sys/socket.h> 39 #include <sys/time.h> 40 #include <ctype.h> 41 #include <stdlib.h> 42 #include <unistd.h> 43 44 #include "general.h" 45 46 #include "fdset.h" 47 48 #include "ring.h" 49 50 #include "defines.h" 51 52 #include "externs.h" 53 54 #ifdef AUTHENTICATION 55 #include <libtelnet/auth.h> 56 #endif 57 #ifdef ENCRYPTION 58 #include <libtelnet/encrypt.h> 59 #endif 60 61 FILE *NetTrace = NULL; /* Not in bss, since needs to stay */ 62 int prettydump; 63 64 /* 65 * upcase() 66 * 67 * Upcase (in place) the argument. 68 */ 69 70 void 71 upcase(char *argument) 72 { 73 int c; 74 75 while ((c = *argument) != 0) { 76 if (islower(c)) { 77 *argument = toupper(c); 78 } 79 argument++; 80 } 81 } 82 83 /* 84 * SetSockOpt() 85 * 86 * Compensate for differences in 4.2 and 4.3 systems. 87 */ 88 89 int 90 SetSockOpt(int fd, int level, int option, int yesno) 91 { 92 return setsockopt(fd, level, option, 93 (char *)&yesno, sizeof yesno); 94 } 95 96 /* 97 * The following are routines used to print out debugging information. 98 */ 99 100 unsigned char NetTraceFile[256] = "(standard output)"; 101 102 void 103 SetNetTrace(char *file) 104 { 105 if (NetTrace && NetTrace != stdout) 106 fclose(NetTrace); 107 if (file && (strcmp(file, "-") != 0)) { 108 NetTrace = fopen(file, "w"); 109 if (NetTrace) { 110 strcpy((char *)NetTraceFile, file); 111 return; 112 } 113 fprintf(stderr, "Cannot open %s.\n", file); 114 } 115 NetTrace = stdout; 116 strcpy((char *)NetTraceFile, "(standard output)"); 117 } 118 119 void 120 Dump(char direction, unsigned char *buffer, int length) 121 { 122 # define BYTES_PER_LINE 32 123 # define min(x,y) ((x<y)? x:y) 124 unsigned char *pThis; 125 int offset; 126 127 offset = 0; 128 129 while (length) { 130 /* print one line */ 131 fprintf(NetTrace, "%c 0x%x\t", direction, offset); 132 pThis = buffer; 133 if (prettydump) { 134 buffer = buffer + min(length, BYTES_PER_LINE/2); 135 while (pThis < buffer) { 136 fprintf(NetTrace, "%c%.2x", 137 (((*pThis)&0xff) == 0xff) ? '*' : ' ', 138 (*pThis)&0xff); 139 pThis++; 140 } 141 length -= BYTES_PER_LINE/2; 142 offset += BYTES_PER_LINE/2; 143 } else { 144 buffer = buffer + min(length, BYTES_PER_LINE); 145 while (pThis < buffer) { 146 fprintf(NetTrace, "%.2x", (*pThis)&0xff); 147 pThis++; 148 } 149 length -= BYTES_PER_LINE; 150 offset += BYTES_PER_LINE; 151 } 152 if (NetTrace == stdout) { 153 fprintf(NetTrace, "\r\n"); 154 } else { 155 fprintf(NetTrace, "\n"); 156 } 157 if (length < 0) { 158 fflush(NetTrace); 159 return; 160 } 161 /* find next unique line */ 162 } 163 fflush(NetTrace); 164 } 165 166 167 void 168 printoption(const char *direction, int cmd, int option) 169 { 170 if (!showoptions) 171 return; 172 if (cmd == IAC) { 173 if (TELCMD_OK(option)) 174 fprintf(NetTrace, "%s IAC %s", direction, TELCMD(option)); 175 else 176 fprintf(NetTrace, "%s IAC %d", direction, option); 177 } else { 178 const char *fmt; 179 fmt = (cmd == WILL) ? "WILL" : (cmd == WONT) ? "WONT" : 180 (cmd == DO) ? "DO" : (cmd == DONT) ? "DONT" : 0; 181 if (fmt) { 182 fprintf(NetTrace, "%s %s ", direction, fmt); 183 if (TELOPT_OK(option)) 184 fprintf(NetTrace, "%s", TELOPT(option)); 185 else if (option == TELOPT_EXOPL) 186 fprintf(NetTrace, "EXOPL"); 187 else 188 fprintf(NetTrace, "%d", option); 189 } else 190 fprintf(NetTrace, "%s %d %d", direction, cmd, option); 191 } 192 if (NetTrace == stdout) { 193 fprintf(NetTrace, "\r\n"); 194 fflush(NetTrace); 195 } else { 196 fprintf(NetTrace, "\n"); 197 } 198 return; 199 } 200 201 void 202 optionstatus(void) 203 { 204 int i; 205 extern char will_wont_resp[], do_dont_resp[]; 206 207 for (i = 0; i < 256; i++) { 208 if (do_dont_resp[i]) { 209 if (TELOPT_OK(i)) 210 printf("resp DO_DONT %s: %d\n", TELOPT(i), do_dont_resp[i]); 211 else if (TELCMD_OK(i)) 212 printf("resp DO_DONT %s: %d\n", TELCMD(i), do_dont_resp[i]); 213 else 214 printf("resp DO_DONT %d: %d\n", i, 215 do_dont_resp[i]); 216 if (my_want_state_is_do(i)) { 217 if (TELOPT_OK(i)) 218 printf("want DO %s\n", TELOPT(i)); 219 else if (TELCMD_OK(i)) 220 printf("want DO %s\n", TELCMD(i)); 221 else 222 printf("want DO %d\n", i); 223 } else { 224 if (TELOPT_OK(i)) 225 printf("want DONT %s\n", TELOPT(i)); 226 else if (TELCMD_OK(i)) 227 printf("want DONT %s\n", TELCMD(i)); 228 else 229 printf("want DONT %d\n", i); 230 } 231 } else { 232 if (my_state_is_do(i)) { 233 if (TELOPT_OK(i)) 234 printf(" DO %s\n", TELOPT(i)); 235 else if (TELCMD_OK(i)) 236 printf(" DO %s\n", TELCMD(i)); 237 else 238 printf(" DO %d\n", i); 239 } 240 } 241 if (will_wont_resp[i]) { 242 if (TELOPT_OK(i)) 243 printf("resp WILL_WONT %s: %d\n", TELOPT(i), will_wont_resp[i]); 244 else if (TELCMD_OK(i)) 245 printf("resp WILL_WONT %s: %d\n", TELCMD(i), will_wont_resp[i]); 246 else 247 printf("resp WILL_WONT %d: %d\n", 248 i, will_wont_resp[i]); 249 if (my_want_state_is_will(i)) { 250 if (TELOPT_OK(i)) 251 printf("want WILL %s\n", TELOPT(i)); 252 else if (TELCMD_OK(i)) 253 printf("want WILL %s\n", TELCMD(i)); 254 else 255 printf("want WILL %d\n", i); 256 } else { 257 if (TELOPT_OK(i)) 258 printf("want WONT %s\n", TELOPT(i)); 259 else if (TELCMD_OK(i)) 260 printf("want WONT %s\n", TELCMD(i)); 261 else 262 printf("want WONT %d\n", i); 263 } 264 } else { 265 if (my_state_is_will(i)) { 266 if (TELOPT_OK(i)) 267 printf(" WILL %s\n", TELOPT(i)); 268 else if (TELCMD_OK(i)) 269 printf(" WILL %s\n", TELCMD(i)); 270 else 271 printf(" WILL %d\n", i); 272 } 273 } 274 } 275 276 } 277 278 void 279 printsub(char direction, unsigned char *pointer, int length) 280 { 281 int i; 282 #ifdef AUTHENTICATION 283 char buf[512]; 284 #endif 285 extern int want_status_response; 286 287 if (showoptions || direction == 0 || 288 (want_status_response && (pointer[0] == TELOPT_STATUS))) { 289 if (direction) { 290 fprintf(NetTrace, "%s IAC SB ", 291 (direction == '<')? "RCVD":"SENT"); 292 if (length >= 3) { 293 int j; 294 295 i = pointer[length-2]; 296 j = pointer[length-1]; 297 298 if (i != IAC || j != SE) { 299 fprintf(NetTrace, "(terminated by "); 300 if (TELOPT_OK(i)) 301 fprintf(NetTrace, "%s ", TELOPT(i)); 302 else if (TELCMD_OK(i)) 303 fprintf(NetTrace, "%s ", TELCMD(i)); 304 else 305 fprintf(NetTrace, "%d ", i); 306 if (TELOPT_OK(j)) 307 fprintf(NetTrace, "%s", TELOPT(j)); 308 else if (TELCMD_OK(j)) 309 fprintf(NetTrace, "%s", TELCMD(j)); 310 else 311 fprintf(NetTrace, "%d", j); 312 fprintf(NetTrace, ", not IAC SE!) "); 313 } 314 } 315 length -= 2; 316 } 317 if (length < 1) { 318 fprintf(NetTrace, "(Empty suboption??\?)"); 319 if (NetTrace == stdout) 320 fflush(NetTrace); 321 return; 322 } 323 switch (pointer[0]) { 324 case TELOPT_TTYPE: 325 fprintf(NetTrace, "TERMINAL-TYPE "); 326 switch (pointer[1]) { 327 case TELQUAL_IS: 328 fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2); 329 break; 330 case TELQUAL_SEND: 331 fprintf(NetTrace, "SEND"); 332 break; 333 default: 334 fprintf(NetTrace, 335 "- unknown qualifier %d (0x%x).", 336 pointer[1], pointer[1]); 337 } 338 break; 339 case TELOPT_TSPEED: 340 fprintf(NetTrace, "TERMINAL-SPEED"); 341 if (length < 2) { 342 fprintf(NetTrace, " (empty suboption??\?)"); 343 break; 344 } 345 switch (pointer[1]) { 346 case TELQUAL_IS: 347 fprintf(NetTrace, " IS "); 348 fprintf(NetTrace, "%.*s", length-2, (char *)pointer+2); 349 break; 350 default: 351 if (pointer[1] == 1) 352 fprintf(NetTrace, " SEND"); 353 else 354 fprintf(NetTrace, " %d (unknown)", pointer[1]); 355 for (i = 2; i < length; i++) 356 fprintf(NetTrace, " ?%d?", pointer[i]); 357 break; 358 } 359 break; 360 361 case TELOPT_LFLOW: 362 fprintf(NetTrace, "TOGGLE-FLOW-CONTROL"); 363 if (length < 2) { 364 fprintf(NetTrace, " (empty suboption??\?)"); 365 break; 366 } 367 switch (pointer[1]) { 368 case LFLOW_OFF: 369 fprintf(NetTrace, " OFF"); break; 370 case LFLOW_ON: 371 fprintf(NetTrace, " ON"); break; 372 case LFLOW_RESTART_ANY: 373 fprintf(NetTrace, " RESTART-ANY"); break; 374 case LFLOW_RESTART_XON: 375 fprintf(NetTrace, " RESTART-XON"); break; 376 default: 377 fprintf(NetTrace, " %d (unknown)", pointer[1]); 378 } 379 for (i = 2; i < length; i++) 380 fprintf(NetTrace, " ?%d?", pointer[i]); 381 break; 382 383 case TELOPT_NAWS: 384 fprintf(NetTrace, "NAWS"); 385 if (length < 2) { 386 fprintf(NetTrace, " (empty suboption??\?)"); 387 break; 388 } 389 if (length == 2) { 390 fprintf(NetTrace, " ?%d?", pointer[1]); 391 break; 392 } 393 fprintf(NetTrace, " %d %d (%d)", 394 pointer[1], pointer[2], 395 (int)((((unsigned int)pointer[1])<<8)|((unsigned int)pointer[2]))); 396 if (length == 4) { 397 fprintf(NetTrace, " ?%d?", pointer[3]); 398 break; 399 } 400 fprintf(NetTrace, " %d %d (%d)", 401 pointer[3], pointer[4], 402 (int)((((unsigned int)pointer[3])<<8)|((unsigned int)pointer[4]))); 403 for (i = 5; i < length; i++) 404 fprintf(NetTrace, " ?%d?", pointer[i]); 405 break; 406 407 #ifdef AUTHENTICATION 408 case TELOPT_AUTHENTICATION: 409 fprintf(NetTrace, "AUTHENTICATION"); 410 if (length < 2) { 411 fprintf(NetTrace, " (empty suboption??\?)"); 412 break; 413 } 414 switch (pointer[1]) { 415 case TELQUAL_REPLY: 416 case TELQUAL_IS: 417 fprintf(NetTrace, " %s ", (pointer[1] == TELQUAL_IS) ? 418 "IS" : "REPLY"); 419 if (AUTHTYPE_NAME_OK(pointer[2])) 420 fprintf(NetTrace, "%s ", AUTHTYPE_NAME(pointer[2])); 421 else 422 fprintf(NetTrace, "%d ", pointer[2]); 423 if (length < 3) { 424 fprintf(NetTrace, "(partial suboption??\?)"); 425 break; 426 } 427 fprintf(NetTrace, "%s|%s", 428 ((pointer[3] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ? 429 "CLIENT" : "SERVER", 430 ((pointer[3] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ? 431 "MUTUAL" : "ONE-WAY"); 432 433 auth_printsub(&pointer[1], length - 1, buf, sizeof(buf)); 434 fprintf(NetTrace, "%s", buf); 435 break; 436 437 case TELQUAL_SEND: 438 i = 2; 439 fprintf(NetTrace, " SEND "); 440 while (i < length) { 441 if (AUTHTYPE_NAME_OK(pointer[i])) 442 fprintf(NetTrace, "%s ", AUTHTYPE_NAME(pointer[i])); 443 else 444 fprintf(NetTrace, "%d ", pointer[i]); 445 if (++i >= length) { 446 fprintf(NetTrace, "(partial suboption??\?)"); 447 break; 448 } 449 fprintf(NetTrace, "%s|%s ", 450 ((pointer[i] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ? 451 "CLIENT" : "SERVER", 452 ((pointer[i] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ? 453 "MUTUAL" : "ONE-WAY"); 454 ++i; 455 } 456 break; 457 458 case TELQUAL_NAME: 459 i = 2; 460 fprintf(NetTrace, " NAME \""); 461 while (i < length) 462 putc(pointer[i++], NetTrace); 463 putc('"', NetTrace); 464 break; 465 466 default: 467 for (i = 2; i < length; i++) 468 fprintf(NetTrace, " ?%d?", pointer[i]); 469 break; 470 } 471 break; 472 #endif 473 474 #ifdef ENCRYPTION 475 case TELOPT_ENCRYPT: 476 fprintf(NetTrace, "ENCRYPT"); 477 if (length < 2) { 478 fprintf(NetTrace, " (empty suboption??\?)"); 479 break; 480 } 481 switch (pointer[1]) { 482 case ENCRYPT_START: 483 fprintf(NetTrace, " START"); 484 break; 485 486 case ENCRYPT_END: 487 fprintf(NetTrace, " END"); 488 break; 489 490 case ENCRYPT_REQSTART: 491 fprintf(NetTrace, " REQUEST-START"); 492 break; 493 494 case ENCRYPT_REQEND: 495 fprintf(NetTrace, " REQUEST-END"); 496 break; 497 498 case ENCRYPT_IS: 499 case ENCRYPT_REPLY: 500 fprintf(NetTrace, " %s ", (pointer[1] == ENCRYPT_IS) ? 501 "IS" : "REPLY"); 502 if (length < 3) { 503 fprintf(NetTrace, " (partial suboption??\?)"); 504 break; 505 } 506 if (ENCTYPE_NAME_OK(pointer[2])) 507 fprintf(NetTrace, "%s ", ENCTYPE_NAME(pointer[2])); 508 else 509 fprintf(NetTrace, " %d (unknown)", pointer[2]); 510 511 encrypt_printsub(&pointer[1], length - 1, buf, sizeof(buf)); 512 fprintf(NetTrace, "%s", buf); 513 break; 514 515 case ENCRYPT_SUPPORT: 516 i = 2; 517 fprintf(NetTrace, " SUPPORT "); 518 while (i < length) { 519 if (ENCTYPE_NAME_OK(pointer[i])) 520 fprintf(NetTrace, "%s ", ENCTYPE_NAME(pointer[i])); 521 else 522 fprintf(NetTrace, "%d ", pointer[i]); 523 i++; 524 } 525 break; 526 527 case ENCRYPT_ENC_KEYID: 528 fprintf(NetTrace, " ENC_KEYID "); 529 goto encommon; 530 531 case ENCRYPT_DEC_KEYID: 532 fprintf(NetTrace, " DEC_KEYID "); 533 goto encommon; 534 535 default: 536 fprintf(NetTrace, " %d (unknown)", pointer[1]); 537 encommon: 538 for (i = 2; i < length; i++) 539 fprintf(NetTrace, " %d", pointer[i]); 540 break; 541 } 542 break; 543 #endif /* ENCRYPTION */ 544 545 case TELOPT_LINEMODE: 546 fprintf(NetTrace, "LINEMODE "); 547 if (length < 2) { 548 fprintf(NetTrace, " (empty suboption??\?)"); 549 break; 550 } 551 switch (pointer[1]) { 552 case WILL: 553 fprintf(NetTrace, "WILL "); 554 goto common; 555 case WONT: 556 fprintf(NetTrace, "WONT "); 557 goto common; 558 case DO: 559 fprintf(NetTrace, "DO "); 560 goto common; 561 case DONT: 562 fprintf(NetTrace, "DONT "); 563 common: 564 if (length < 3) { 565 fprintf(NetTrace, "(no option??\?)"); 566 break; 567 } 568 switch (pointer[2]) { 569 case LM_FORWARDMASK: 570 fprintf(NetTrace, "Forward Mask"); 571 for (i = 3; i < length; i++) 572 fprintf(NetTrace, " %x", pointer[i]); 573 break; 574 default: 575 fprintf(NetTrace, "%d (unknown)", pointer[2]); 576 for (i = 3; i < length; i++) 577 fprintf(NetTrace, " %d", pointer[i]); 578 break; 579 } 580 break; 581 582 case LM_SLC: 583 fprintf(NetTrace, "SLC"); 584 for (i = 2; i < length - 2; i += 3) { 585 if (SLC_NAME_OK(pointer[i+SLC_FUNC])) 586 fprintf(NetTrace, " %s", SLC_NAME(pointer[i+SLC_FUNC])); 587 else 588 fprintf(NetTrace, " %d", pointer[i+SLC_FUNC]); 589 switch (pointer[i+SLC_FLAGS]&SLC_LEVELBITS) { 590 case SLC_NOSUPPORT: 591 fprintf(NetTrace, " NOSUPPORT"); break; 592 case SLC_CANTCHANGE: 593 fprintf(NetTrace, " CANTCHANGE"); break; 594 case SLC_VARIABLE: 595 fprintf(NetTrace, " VARIABLE"); break; 596 case SLC_DEFAULT: 597 fprintf(NetTrace, " DEFAULT"); break; 598 } 599 fprintf(NetTrace, "%s%s%s", 600 pointer[i+SLC_FLAGS]&SLC_ACK ? "|ACK" : "", 601 pointer[i+SLC_FLAGS]&SLC_FLUSHIN ? "|FLUSHIN" : "", 602 pointer[i+SLC_FLAGS]&SLC_FLUSHOUT ? "|FLUSHOUT" : ""); 603 if (pointer[i+SLC_FLAGS]& ~(SLC_ACK|SLC_FLUSHIN| 604 SLC_FLUSHOUT| SLC_LEVELBITS)) 605 fprintf(NetTrace, "(0x%x)", pointer[i+SLC_FLAGS]); 606 fprintf(NetTrace, " %d;", pointer[i+SLC_VALUE]); 607 if ((pointer[i+SLC_VALUE] == IAC) && 608 (pointer[i+SLC_VALUE+1] == IAC)) 609 i++; 610 } 611 for (; i < length; i++) 612 fprintf(NetTrace, " ?%d?", pointer[i]); 613 break; 614 615 case LM_MODE: 616 fprintf(NetTrace, "MODE "); 617 if (length < 3) { 618 fprintf(NetTrace, "(no mode??\?)"); 619 break; 620 } 621 { 622 char tbuf[64]; 623 sprintf(tbuf, "%s%s%s%s%s", 624 pointer[2]&MODE_EDIT ? "|EDIT" : "", 625 pointer[2]&MODE_TRAPSIG ? "|TRAPSIG" : "", 626 pointer[2]&MODE_SOFT_TAB ? "|SOFT_TAB" : "", 627 pointer[2]&MODE_LIT_ECHO ? "|LIT_ECHO" : "", 628 pointer[2]&MODE_ACK ? "|ACK" : ""); 629 fprintf(NetTrace, "%s", tbuf[1] ? &tbuf[1] : "0"); 630 } 631 if (pointer[2]&~(MODE_MASK)) 632 fprintf(NetTrace, " (0x%x)", pointer[2]); 633 for (i = 3; i < length; i++) 634 fprintf(NetTrace, " ?0x%x?", pointer[i]); 635 break; 636 default: 637 fprintf(NetTrace, "%d (unknown)", pointer[1]); 638 for (i = 2; i < length; i++) 639 fprintf(NetTrace, " %d", pointer[i]); 640 } 641 break; 642 643 case TELOPT_STATUS: { 644 const char *cp; 645 int j, k; 646 647 fprintf(NetTrace, "STATUS"); 648 649 switch (pointer[1]) { 650 default: 651 if (pointer[1] == TELQUAL_SEND) 652 fprintf(NetTrace, " SEND"); 653 else 654 fprintf(NetTrace, " %d (unknown)", pointer[1]); 655 for (i = 2; i < length; i++) 656 fprintf(NetTrace, " ?%d?", pointer[i]); 657 break; 658 case TELQUAL_IS: 659 if (--want_status_response < 0) 660 want_status_response = 0; 661 if (NetTrace == stdout) 662 fprintf(NetTrace, " IS\r\n"); 663 else 664 fprintf(NetTrace, " IS\n"); 665 666 for (i = 2; i < length; i++) { 667 switch(pointer[i]) { 668 case DO: cp = "DO"; goto common2; 669 case DONT: cp = "DONT"; goto common2; 670 case WILL: cp = "WILL"; goto common2; 671 case WONT: cp = "WONT"; goto common2; 672 common2: 673 i++; 674 if (TELOPT_OK((int)pointer[i])) 675 fprintf(NetTrace, " %s %s", cp, TELOPT(pointer[i])); 676 else 677 fprintf(NetTrace, " %s %d", cp, pointer[i]); 678 679 if (NetTrace == stdout) 680 fprintf(NetTrace, "\r\n"); 681 else 682 fprintf(NetTrace, "\n"); 683 break; 684 685 case SB: 686 fprintf(NetTrace, " SB "); 687 i++; 688 j = k = i; 689 while (j < length) { 690 if (pointer[j] == SE) { 691 if (j+1 == length) 692 break; 693 if (pointer[j+1] == SE) 694 j++; 695 else 696 break; 697 } 698 pointer[k++] = pointer[j++]; 699 } 700 printsub(0, &pointer[i], k - i); 701 if (i < length) { 702 fprintf(NetTrace, " SE"); 703 i = j; 704 } else 705 i = j - 1; 706 707 if (NetTrace == stdout) 708 fprintf(NetTrace, "\r\n"); 709 else 710 fprintf(NetTrace, "\n"); 711 712 break; 713 714 default: 715 fprintf(NetTrace, " %d", pointer[i]); 716 break; 717 } 718 } 719 break; 720 } 721 break; 722 } 723 724 case TELOPT_XDISPLOC: 725 fprintf(NetTrace, "X-DISPLAY-LOCATION "); 726 switch (pointer[1]) { 727 case TELQUAL_IS: 728 fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2); 729 break; 730 case TELQUAL_SEND: 731 fprintf(NetTrace, "SEND"); 732 break; 733 default: 734 fprintf(NetTrace, "- unknown qualifier %d (0x%x).", 735 pointer[1], pointer[1]); 736 } 737 break; 738 739 case TELOPT_NEW_ENVIRON: 740 fprintf(NetTrace, "NEW-ENVIRON "); 741 #ifdef OLD_ENVIRON 742 goto env_common1; 743 case TELOPT_OLD_ENVIRON: 744 fprintf(NetTrace, "OLD-ENVIRON"); 745 env_common1: 746 #endif 747 switch (pointer[1]) { 748 case TELQUAL_IS: 749 fprintf(NetTrace, "IS "); 750 goto env_common; 751 case TELQUAL_SEND: 752 fprintf(NetTrace, "SEND "); 753 goto env_common; 754 case TELQUAL_INFO: 755 fprintf(NetTrace, "INFO "); 756 env_common: 757 { 758 int noquote = 2; 759 #if defined(ENV_HACK) && defined(OLD_ENVIRON) 760 extern int old_env_var, old_env_value; 761 #endif 762 for (i = 2; i < length; i++ ) { 763 switch (pointer[i]) { 764 case NEW_ENV_VALUE: 765 #ifdef OLD_ENVIRON 766 /* case NEW_ENV_OVAR: */ 767 if (pointer[0] == TELOPT_OLD_ENVIRON) { 768 # ifdef ENV_HACK 769 if (old_env_var == OLD_ENV_VALUE) 770 fprintf(NetTrace, "\" (VALUE) " + noquote); 771 else 772 # endif 773 fprintf(NetTrace, "\" VAR " + noquote); 774 } else 775 #endif /* OLD_ENVIRON */ 776 fprintf(NetTrace, "%s", "\" VALUE " + noquote); 777 noquote = 2; 778 break; 779 780 case NEW_ENV_VAR: 781 #ifdef OLD_ENVIRON 782 /* case OLD_ENV_VALUE: */ 783 if (pointer[0] == TELOPT_OLD_ENVIRON) { 784 # ifdef ENV_HACK 785 if (old_env_value == OLD_ENV_VAR) 786 fprintf(NetTrace, "\" (VAR) " + noquote); 787 else 788 # endif 789 fprintf(NetTrace, "\" VALUE " + noquote); 790 } else 791 #endif /* OLD_ENVIRON */ 792 fprintf(NetTrace, "%s", "\" VAR " + noquote); 793 noquote = 2; 794 break; 795 796 case ENV_ESC: 797 fprintf(NetTrace, "%s", "\" ESC " + noquote); 798 noquote = 2; 799 break; 800 801 case ENV_USERVAR: 802 fprintf(NetTrace, "%s", "\" USERVAR " + noquote); 803 noquote = 2; 804 break; 805 806 default: 807 if (isprint(pointer[i]) && pointer[i] != '"') { 808 if (noquote) { 809 putc('"', NetTrace); 810 noquote = 0; 811 } 812 putc(pointer[i], NetTrace); 813 } else { 814 fprintf(NetTrace, "\" %03o " + noquote, 815 pointer[i]); 816 noquote = 2; 817 } 818 break; 819 } 820 } 821 if (!noquote) 822 putc('"', NetTrace); 823 break; 824 } 825 } 826 break; 827 828 default: 829 if (TELOPT_OK(pointer[0])) 830 fprintf(NetTrace, "%s (unknown)", TELOPT(pointer[0])); 831 else 832 fprintf(NetTrace, "%d (unknown)", pointer[0]); 833 for (i = 1; i < length; i++) 834 fprintf(NetTrace, " %d", pointer[i]); 835 break; 836 } 837 if (direction) { 838 if (NetTrace == stdout) 839 fprintf(NetTrace, "\r\n"); 840 else 841 fprintf(NetTrace, "\n"); 842 } 843 if (NetTrace == stdout) 844 fflush(NetTrace); 845 } 846 } 847 848 /* EmptyTerminal - called to make sure that the terminal buffer is empty. 849 * Note that we consider the buffer to run all the 850 * way to the kernel (thus the select). 851 */ 852 853 static void 854 EmptyTerminal(void) 855 { 856 fd_set o; 857 858 FD_ZERO(&o); 859 860 if (TTYBYTES() == 0) { 861 FD_SET(tout, &o); 862 (void) select(tout+1, NULL, &o, NULL, NULL); /* wait for TTLOWAT */ 863 } else { 864 while (TTYBYTES()) { 865 (void) ttyflush(0); 866 FD_SET(tout, &o); 867 (void) select(tout+1, NULL, &o, NULL, NULL); /* wait for TTLOWAT */ 868 } 869 } 870 } 871 872 static void 873 SetForExit(void) 874 { 875 setconnmode(0); 876 do { 877 (void)telrcv(); /* Process any incoming data */ 878 EmptyTerminal(); 879 } while (ring_full_count(&netiring)); /* While there is any */ 880 setcommandmode(); 881 fflush(stdout); 882 fflush(stderr); 883 setconnmode(0); 884 EmptyTerminal(); /* Flush the path to the tty */ 885 setcommandmode(); 886 } 887 888 void 889 Exit(int returnCode) 890 { 891 SetForExit(); 892 exit(returnCode); 893 } 894 895 void 896 ExitString(const char *string, int returnCode) 897 { 898 SetForExit(); 899 fwrite(string, 1, strlen(string), stderr); 900 exit(returnCode); 901 } 902