1 /* $NetBSD: utilities.c,v 1.29 2019/01/05 06:47:24 maya Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)utilities.c 8.3 (Berkeley) 5/30/95"; 36 #else 37 __RCSID("$NetBSD: utilities.c,v 1.29 2019/01/05 06:47:24 maya Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #define TELOPTS 42 #define TELCMDS 43 #define SLC_NAMES 44 #include <arpa/telnet.h> 45 #include <sys/types.h> 46 #include <sys/time.h> 47 #include <sys/socket.h> 48 #include <unistd.h> 49 #include <poll.h> 50 51 #include <ctype.h> 52 53 #include "general.h" 54 #include "ring.h" 55 #include "defines.h" 56 #include "externs.h" 57 58 59 #ifdef AUTHENTICATION 60 #include <libtelnet/auth.h> 61 #endif 62 #ifdef ENCRYPTION 63 #include <libtelnet/encrypt.h> 64 #endif 65 66 static void SetForExit(void); 67 68 FILE *NetTrace = 0; /* Not in bss, since needs to stay */ 69 int prettydump; 70 71 /* 72 * upcase() 73 * 74 * Upcase (in place) the argument. 75 */ 76 77 void 78 upcase(char *argument) 79 { 80 unsigned char c; 81 82 while ((c = *argument) != 0) { 83 if (islower(c)) { 84 *argument = toupper(c); 85 } 86 argument++; 87 } 88 } 89 90 /* 91 * SetSockOpt() 92 * 93 * Compensate for differences in 4.2 and 4.3 systems. 94 */ 95 96 int 97 SetSockOpt(int fd, int level, int option, int yesno) 98 { 99 return setsockopt(fd, level, option, (char *)&yesno, sizeof yesno); 100 } 101 102 /* 104 * The following are routines used to print out debugging information. 105 */ 106 107 char NetTraceFile[256] = "(standard output)"; 108 109 void 110 SetNetTrace(const char *file) 111 { 112 if (NetTrace && NetTrace != stdout) 113 fclose(NetTrace); 114 if (file && (strcmp(file, "-") != 0)) { 115 NetTrace = fopen(file, "w"); 116 if (NetTrace) { 117 strlcpy(NetTraceFile, file, sizeof(NetTraceFile)); 118 return; 119 } 120 fprintf(stderr, "Cannot open %s.\n", file); 121 } 122 NetTrace = stdout; 123 strlcpy(NetTraceFile, "(standard output)", sizeof(NetTraceFile)); 124 } 125 126 void 127 Dump(int direction, unsigned char *buffer, int length) 128 { 129 # define BYTES_PER_LINE 32 130 # define min(x,y) ((x<y)? x:y) 131 unsigned char *pThis; 132 int offset; 133 134 offset = 0; 135 136 while (length) { 137 /* print one line */ 138 fprintf(NetTrace, "%c 0x%x\t", direction, offset); 139 pThis = buffer; 140 if (prettydump) { 141 buffer = buffer + min(length, BYTES_PER_LINE/2); 142 while (pThis < buffer) { 143 fprintf(NetTrace, "%c%.2x", 144 (((*pThis)&0xff) == 0xff) ? '*' : ' ', 145 (*pThis)&0xff); 146 pThis++; 147 } 148 length -= BYTES_PER_LINE/2; 149 offset += BYTES_PER_LINE/2; 150 } else { 151 buffer = buffer + min(length, BYTES_PER_LINE); 152 while (pThis < buffer) { 153 fprintf(NetTrace, "%.2x", (*pThis)&0xff); 154 pThis++; 155 } 156 length -= BYTES_PER_LINE; 157 offset += BYTES_PER_LINE; 158 } 159 if (NetTrace == stdout) { 160 fprintf(NetTrace, "\r\n"); 161 } else { 162 fprintf(NetTrace, "\n"); 163 } 164 if (length < 0) { 165 fflush(NetTrace); 166 return; 167 } 168 /* find next unique line */ 169 } 170 fflush(NetTrace); 171 } 172 173 174 void 175 printoption(const char *direction, int cmd, int option) 176 { 177 if (!showoptions) 178 return; 179 if (cmd == IAC) { 180 if (TELCMD_OK(option)) 181 fprintf(NetTrace, "%s IAC %s", direction, TELCMD(option)); 182 else 183 fprintf(NetTrace, "%s IAC %d", direction, option); 184 } else { 185 const char *fmt; 186 fmt = (cmd == WILL) ? "WILL" : (cmd == WONT) ? "WONT" : 187 (cmd == DO) ? "DO" : (cmd == DONT) ? "DONT" : 0; 188 if (fmt) { 189 fprintf(NetTrace, "%s %s ", direction, fmt); 190 if (TELOPT_OK(option)) 191 fprintf(NetTrace, "%s", TELOPT(option)); 192 else if (option == TELOPT_EXOPL) 193 fprintf(NetTrace, "EXOPL"); 194 else 195 fprintf(NetTrace, "%d", option); 196 } else 197 fprintf(NetTrace, "%s %d %d", direction, cmd, option); 198 } 199 if (NetTrace == stdout) { 200 fprintf(NetTrace, "\r\n"); 201 fflush(NetTrace); 202 } else { 203 fprintf(NetTrace, "\n"); 204 } 205 return; 206 } 207 208 void 209 optionstatus(void) 210 { 211 int i; 212 extern char will_wont_resp[], do_dont_resp[]; 213 214 for (i = 0; i < 256; i++) { 215 if (do_dont_resp[i]) { 216 if (TELOPT_OK(i)) 217 printf("resp DO_DONT %s: %d\n", TELOPT(i), do_dont_resp[i]); 218 else if (TELCMD_OK(i)) 219 printf("resp DO_DONT %s: %d\n", TELCMD(i), do_dont_resp[i]); 220 else 221 printf("resp DO_DONT %d: %d\n", i, 222 do_dont_resp[i]); 223 if (my_want_state_is_do(i)) { 224 if (TELOPT_OK(i)) 225 printf("want DO %s\n", TELOPT(i)); 226 else if (TELCMD_OK(i)) 227 printf("want DO %s\n", TELCMD(i)); 228 else 229 printf("want DO %d\n", i); 230 } else { 231 if (TELOPT_OK(i)) 232 printf("want DONT %s\n", TELOPT(i)); 233 else if (TELCMD_OK(i)) 234 printf("want DONT %s\n", TELCMD(i)); 235 else 236 printf("want DONT %d\n", i); 237 } 238 } else { 239 if (my_state_is_do(i)) { 240 if (TELOPT_OK(i)) 241 printf(" DO %s\n", TELOPT(i)); 242 else if (TELCMD_OK(i)) 243 printf(" DO %s\n", TELCMD(i)); 244 else 245 printf(" DO %d\n", i); 246 } 247 } 248 if (will_wont_resp[i]) { 249 if (TELOPT_OK(i)) 250 printf("resp WILL_WONT %s: %d\n", TELOPT(i), will_wont_resp[i]); 251 else if (TELCMD_OK(i)) 252 printf("resp WILL_WONT %s: %d\n", TELCMD(i), will_wont_resp[i]); 253 else 254 printf("resp WILL_WONT %d: %d\n", 255 i, will_wont_resp[i]); 256 if (my_want_state_is_will(i)) { 257 if (TELOPT_OK(i)) 258 printf("want WILL %s\n", TELOPT(i)); 259 else if (TELCMD_OK(i)) 260 printf("want WILL %s\n", TELCMD(i)); 261 else 262 printf("want WILL %d\n", i); 263 } else { 264 if (TELOPT_OK(i)) 265 printf("want WONT %s\n", TELOPT(i)); 266 else if (TELCMD_OK(i)) 267 printf("want WONT %s\n", TELCMD(i)); 268 else 269 printf("want WONT %d\n", i); 270 } 271 } else { 272 if (my_state_is_will(i)) { 273 if (TELOPT_OK(i)) 274 printf(" WILL %s\n", TELOPT(i)); 275 else if (TELCMD_OK(i)) 276 printf(" WILL %s\n", TELCMD(i)); 277 else 278 printf(" WILL %d\n", i); 279 } 280 } 281 } 282 283 } 284 285 void 286 printsub( 287 int direction, /* '<' or '>' */ 288 unsigned char *pointer, /* where suboption data sits */ 289 int length) /* length of suboption data */ 290 { 291 int i; 292 #ifdef ENCRYPTION 293 char buf[512]; 294 #endif /* ENCRYPTION */ 295 extern int want_status_response; 296 297 if (showoptions || direction == 0 || 298 (want_status_response && (pointer[0] == TELOPT_STATUS))) { 299 if (direction) { 300 fprintf(NetTrace, "%s IAC SB ", 301 (direction == '<')? "RCVD":"SENT"); 302 if (length >= 3) { 303 int j; 304 305 i = pointer[length-2]; 306 j = pointer[length-1]; 307 308 if (i != IAC || j != SE) { 309 fprintf(NetTrace, "(terminated by "); 310 if (TELOPT_OK(i)) 311 fprintf(NetTrace, "%s ", TELOPT(i)); 312 else if (TELCMD_OK(i)) 313 fprintf(NetTrace, "%s ", TELCMD(i)); 314 else 315 fprintf(NetTrace, "%d ", i); 316 if (TELOPT_OK(j)) 317 fprintf(NetTrace, "%s", TELOPT(j)); 318 else if (TELCMD_OK(j)) 319 fprintf(NetTrace, "%s", TELCMD(j)); 320 else 321 fprintf(NetTrace, "%d", j); 322 fprintf(NetTrace, ", not IAC SE!) "); 323 } 324 } 325 length -= 2; 326 } 327 if (length < 1) { 328 fprintf(NetTrace, "(Empty suboption??\?)"); 329 if (NetTrace == stdout) 330 fflush(NetTrace); 331 return; 332 } 333 switch (pointer[0]) { 334 case TELOPT_TTYPE: 335 fprintf(NetTrace, "TERMINAL-TYPE "); 336 switch (pointer[1]) { 337 case TELQUAL_IS: 338 fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2); 339 break; 340 case TELQUAL_SEND: 341 fprintf(NetTrace, "SEND"); 342 break; 343 default: 344 fprintf(NetTrace, 345 "- unknown qualifier %d (0x%x).", 346 pointer[1], pointer[1]); 347 } 348 break; 349 case TELOPT_TSPEED: 350 fprintf(NetTrace, "TERMINAL-SPEED"); 351 if (length < 2) { 352 fprintf(NetTrace, " (empty suboption??\?)"); 353 break; 354 } 355 switch (pointer[1]) { 356 case TELQUAL_IS: 357 fprintf(NetTrace, " IS "); 358 fprintf(NetTrace, "%.*s", length-2, (char *)pointer+2); 359 break; 360 default: 361 if (pointer[1] == 1) 362 fprintf(NetTrace, " SEND"); 363 else 364 fprintf(NetTrace, " %d (unknown)", pointer[1]); 365 for (i = 2; i < length; i++) 366 fprintf(NetTrace, " ?%d?", pointer[i]); 367 break; 368 } 369 break; 370 371 case TELOPT_LFLOW: 372 fprintf(NetTrace, "TOGGLE-FLOW-CONTROL"); 373 if (length < 2) { 374 fprintf(NetTrace, " (empty suboption??\?)"); 375 break; 376 } 377 switch (pointer[1]) { 378 case LFLOW_OFF: 379 fprintf(NetTrace, " OFF"); break; 380 case LFLOW_ON: 381 fprintf(NetTrace, " ON"); break; 382 case LFLOW_RESTART_ANY: 383 fprintf(NetTrace, " RESTART-ANY"); break; 384 case LFLOW_RESTART_XON: 385 fprintf(NetTrace, " RESTART-XON"); break; 386 default: 387 fprintf(NetTrace, " %d (unknown)", pointer[1]); 388 } 389 for (i = 2; i < length; i++) 390 fprintf(NetTrace, " ?%d?", pointer[i]); 391 break; 392 393 case TELOPT_NAWS: 394 fprintf(NetTrace, "NAWS"); 395 if (length < 2) { 396 fprintf(NetTrace, " (empty suboption??\?)"); 397 break; 398 } 399 if (length == 2) { 400 fprintf(NetTrace, " ?%d?", pointer[1]); 401 break; 402 } 403 fprintf(NetTrace, " %d %d (%d)", 404 pointer[1], pointer[2], 405 (int)((((unsigned int)pointer[1])<<8)|((unsigned int)pointer[2]))); 406 if (length == 4) { 407 fprintf(NetTrace, " ?%d?", pointer[3]); 408 break; 409 } 410 fprintf(NetTrace, " %d %d (%d)", 411 pointer[3], pointer[4], 412 (int)((((unsigned int)pointer[3])<<8)|((unsigned int)pointer[4]))); 413 for (i = 5; i < length; i++) 414 fprintf(NetTrace, " ?%d?", pointer[i]); 415 break; 416 417 #ifdef AUTHENTICATION 418 case TELOPT_AUTHENTICATION: 419 fprintf(NetTrace, "AUTHENTICATION"); 420 if (length < 2) { 421 fprintf(NetTrace, " (empty suboption??\?)"); 422 break; 423 } 424 switch (pointer[1]) { 425 case TELQUAL_REPLY: 426 case TELQUAL_IS: 427 fprintf(NetTrace, " %s ", (pointer[1] == TELQUAL_IS) ? 428 "IS" : "REPLY"); 429 if (AUTHTYPE_NAME_OK(pointer[2])) 430 fprintf(NetTrace, "%s ", AUTHTYPE_NAME(pointer[2])); 431 else 432 fprintf(NetTrace, "%d ", pointer[2]); 433 if (length < 3) { 434 fprintf(NetTrace, "(partial suboption??\?)"); 435 break; 436 } 437 fprintf(NetTrace, "%s|%s", 438 ((pointer[3] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ? 439 "CLIENT" : "SERVER", 440 ((pointer[3] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ? 441 "MUTUAL" : "ONE-WAY"); 442 443 auth_printsub(&pointer[1], length - 1, buf, sizeof(buf)); 444 fprintf(NetTrace, "%s", buf); 445 break; 446 447 case TELQUAL_SEND: 448 i = 2; 449 fprintf(NetTrace, " SEND "); 450 while (i < length) { 451 if (AUTHTYPE_NAME_OK(pointer[i])) 452 fprintf(NetTrace, "%s ", AUTHTYPE_NAME(pointer[i])); 453 else 454 fprintf(NetTrace, "%d ", pointer[i]); 455 if (++i >= length) { 456 fprintf(NetTrace, "(partial suboption??\?)"); 457 break; 458 } 459 fprintf(NetTrace, "%s|%s ", 460 ((pointer[i] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ? 461 "CLIENT" : "SERVER", 462 ((pointer[i] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ? 463 "MUTUAL" : "ONE-WAY"); 464 ++i; 465 } 466 break; 467 468 case TELQUAL_NAME: 469 i = 2; 470 fprintf(NetTrace, " NAME \""); 471 while (i < length) 472 putc(pointer[i++], NetTrace); 473 putc('"', NetTrace); 474 break; 475 476 default: 477 for (i = 2; i < length; i++) 478 fprintf(NetTrace, " ?%d?", pointer[i]); 479 break; 480 } 481 break; 482 #endif 483 484 #ifdef ENCRYPTION 485 case TELOPT_ENCRYPT: 486 fprintf(NetTrace, "ENCRYPT"); 487 if (length < 2) { 488 fprintf(NetTrace, " (empty suboption??\?)"); 489 break; 490 } 491 switch (pointer[1]) { 492 case ENCRYPT_START: 493 fprintf(NetTrace, " START"); 494 break; 495 496 case ENCRYPT_END: 497 fprintf(NetTrace, " END"); 498 break; 499 500 case ENCRYPT_REQSTART: 501 fprintf(NetTrace, " REQUEST-START"); 502 break; 503 504 case ENCRYPT_REQEND: 505 fprintf(NetTrace, " REQUEST-END"); 506 break; 507 508 case ENCRYPT_IS: 509 case ENCRYPT_REPLY: 510 fprintf(NetTrace, " %s ", (pointer[1] == ENCRYPT_IS) ? 511 "IS" : "REPLY"); 512 if (length < 3) { 513 fprintf(NetTrace, " (partial suboption??\?)"); 514 break; 515 } 516 if (ENCTYPE_NAME_OK(pointer[2])) 517 fprintf(NetTrace, "%s ", 518 ENCTYPE_NAME(pointer[2])); 519 else 520 fprintf(NetTrace, " %d (unknown)", pointer[2]); 521 522 encrypt_printsub(&pointer[1], length - 1, buf, 523 sizeof(buf)); 524 fprintf(NetTrace, "%s", buf); 525 break; 526 527 case ENCRYPT_SUPPORT: 528 i = 2; 529 fprintf(NetTrace, " SUPPORT "); 530 while (i < length) { 531 if (ENCTYPE_NAME_OK(pointer[i])) 532 fprintf(NetTrace, "%s ", 533 ENCTYPE_NAME(pointer[i])); 534 else 535 fprintf(NetTrace, "%d ", pointer[i]); 536 i++; 537 } 538 break; 539 540 case ENCRYPT_ENC_KEYID: 541 fprintf(NetTrace, " ENC_KEYID "); 542 goto encommon; 543 544 case ENCRYPT_DEC_KEYID: 545 fprintf(NetTrace, " DEC_KEYID "); 546 goto encommon; 547 548 default: 549 fprintf(NetTrace, " %d (unknown)", pointer[1]); 550 encommon: 551 for (i = 2; i < length; i++) 552 fprintf(NetTrace, " %d", pointer[i]); 553 break; 554 } 555 break; 556 #endif /* ENCRYPTION */ 557 558 case TELOPT_LINEMODE: 559 fprintf(NetTrace, "LINEMODE "); 560 if (length < 2) { 561 fprintf(NetTrace, " (empty suboption??\?)"); 562 break; 563 } 564 switch (pointer[1]) { 565 case WILL: 566 fprintf(NetTrace, "WILL "); 567 goto common; 568 case WONT: 569 fprintf(NetTrace, "WONT "); 570 goto common; 571 case DO: 572 fprintf(NetTrace, "DO "); 573 goto common; 574 case DONT: 575 fprintf(NetTrace, "DONT "); 576 common: 577 if (length < 3) { 578 fprintf(NetTrace, "(no option??\?)"); 579 break; 580 } 581 switch (pointer[2]) { 582 case LM_FORWARDMASK: 583 fprintf(NetTrace, "Forward Mask"); 584 for (i = 3; i < length; i++) 585 fprintf(NetTrace, " %x", pointer[i]); 586 break; 587 default: 588 fprintf(NetTrace, "%d (unknown)", pointer[2]); 589 for (i = 3; i < length; i++) 590 fprintf(NetTrace, " %d", pointer[i]); 591 break; 592 } 593 break; 594 595 case LM_SLC: 596 fprintf(NetTrace, "SLC"); 597 for (i = 2; i < length - 2; i += 3) { 598 if (SLC_NAME_OK(pointer[i+SLC_FUNC])) 599 fprintf(NetTrace, " %s", SLC_NAME(pointer[i+SLC_FUNC])); 600 else 601 fprintf(NetTrace, " %d", pointer[i+SLC_FUNC]); 602 switch (pointer[i+SLC_FLAGS]&SLC_LEVELBITS) { 603 case SLC_NOSUPPORT: 604 fprintf(NetTrace, " NOSUPPORT"); break; 605 case SLC_CANTCHANGE: 606 fprintf(NetTrace, " CANTCHANGE"); break; 607 case SLC_VARIABLE: 608 fprintf(NetTrace, " VARIABLE"); break; 609 case SLC_DEFAULT: 610 fprintf(NetTrace, " DEFAULT"); break; 611 } 612 fprintf(NetTrace, "%s%s%s", 613 pointer[i+SLC_FLAGS]&SLC_ACK ? "|ACK" : "", 614 pointer[i+SLC_FLAGS]&SLC_FLUSHIN ? "|FLUSHIN" : "", 615 pointer[i+SLC_FLAGS]&SLC_FLUSHOUT ? "|FLUSHOUT" : ""); 616 if (pointer[i+SLC_FLAGS]& ~(SLC_ACK|SLC_FLUSHIN| 617 SLC_FLUSHOUT| SLC_LEVELBITS)) 618 fprintf(NetTrace, "(0x%x)", pointer[i+SLC_FLAGS]); 619 fprintf(NetTrace, " %d;", pointer[i+SLC_VALUE]); 620 if ((pointer[i+SLC_VALUE] == IAC) && 621 (pointer[i+SLC_VALUE+1] == IAC)) 622 i++; 623 } 624 for (; i < length; i++) 625 fprintf(NetTrace, " ?%d?", pointer[i]); 626 break; 627 628 case LM_MODE: 629 fprintf(NetTrace, "MODE "); 630 if (length < 3) { 631 fprintf(NetTrace, "(no mode??\?)"); 632 break; 633 } 634 { 635 char tbuf[64]; 636 snprintf(tbuf, sizeof(tbuf), "%s%s%s%s%s", 637 pointer[2]&MODE_EDIT ? "|EDIT" : "", 638 pointer[2]&MODE_TRAPSIG ? "|TRAPSIG" : "", 639 pointer[2]&MODE_SOFT_TAB ? "|SOFT_TAB" : "", 640 pointer[2]&MODE_LIT_ECHO ? "|LIT_ECHO" : "", 641 pointer[2]&MODE_ACK ? "|ACK" : ""); 642 fprintf(NetTrace, "%s", tbuf[1] ? &tbuf[1] : "0"); 643 } 644 if (pointer[2]&~(MODE_MASK)) 645 fprintf(NetTrace, " (0x%x)", pointer[2]); 646 for (i = 3; i < length; i++) 647 fprintf(NetTrace, " ?0x%x?", pointer[i]); 648 break; 649 default: 650 fprintf(NetTrace, "%d (unknown)", pointer[1]); 651 for (i = 2; i < length; i++) 652 fprintf(NetTrace, " %d", pointer[i]); 653 } 654 break; 655 656 case TELOPT_STATUS: { 657 const char *cp; 658 int j, k; 659 660 fprintf(NetTrace, "STATUS"); 661 662 switch (pointer[1]) { 663 default: 664 if (pointer[1] == TELQUAL_SEND) 665 fprintf(NetTrace, " SEND"); 666 else 667 fprintf(NetTrace, " %d (unknown)", pointer[1]); 668 for (i = 2; i < length; i++) 669 fprintf(NetTrace, " ?%d?", pointer[i]); 670 break; 671 case TELQUAL_IS: 672 if (--want_status_response < 0) 673 want_status_response = 0; 674 if (NetTrace == stdout) 675 fprintf(NetTrace, " IS\r\n"); 676 else 677 fprintf(NetTrace, " IS\n"); 678 679 for (i = 2; i < length; i++) { 680 switch(pointer[i]) { 681 case DO: cp = "DO"; goto common2; 682 case DONT: cp = "DONT"; goto common2; 683 case WILL: cp = "WILL"; goto common2; 684 case WONT: cp = "WONT"; goto common2; 685 common2: 686 i++; 687 if (TELOPT_OK((int)pointer[i])) 688 fprintf(NetTrace, " %s %s", cp, TELOPT(pointer[i])); 689 else 690 fprintf(NetTrace, " %s %d", cp, pointer[i]); 691 692 if (NetTrace == stdout) 693 fprintf(NetTrace, "\r\n"); 694 else 695 fprintf(NetTrace, "\n"); 696 break; 697 698 case SB: 699 fprintf(NetTrace, " SB "); 700 i++; 701 j = k = i; 702 while (j < length) { 703 if (pointer[j] == SE) { 704 if (j+1 == length) 705 break; 706 if (pointer[j+1] == SE) 707 j++; 708 else 709 break; 710 } 711 pointer[k++] = pointer[j++]; 712 } 713 printsub(0, &pointer[i], k - i); 714 if (i < length) { 715 fprintf(NetTrace, " SE"); 716 i = j; 717 } else 718 i = j - 1; 719 720 if (NetTrace == stdout) 721 fprintf(NetTrace, "\r\n"); 722 else 723 fprintf(NetTrace, "\n"); 724 725 break; 726 727 default: 728 fprintf(NetTrace, " %d", pointer[i]); 729 break; 730 } 731 } 732 break; 733 } 734 break; 735 } 736 737 case TELOPT_XDISPLOC: 738 fprintf(NetTrace, "X-DISPLAY-LOCATION "); 739 switch (pointer[1]) { 740 case TELQUAL_IS: 741 fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2); 742 break; 743 case TELQUAL_SEND: 744 fprintf(NetTrace, "SEND"); 745 break; 746 default: 747 fprintf(NetTrace, "- unknown qualifier %d (0x%x).", 748 pointer[1], pointer[1]); 749 } 750 break; 751 752 case TELOPT_NEW_ENVIRON: 753 fprintf(NetTrace, "NEW-ENVIRON "); 754 switch (pointer[1]) { 755 case TELQUAL_IS: 756 fprintf(NetTrace, "IS "); 757 goto env_common; 758 case TELQUAL_SEND: 759 fprintf(NetTrace, "SEND "); 760 goto env_common; 761 case TELQUAL_INFO: 762 fprintf(NetTrace, "INFO "); 763 env_common: 764 { 765 static const char NQ[] = "\" "; 766 const char *noquote = NQ; 767 for (i = 2; i < length; i++ ) { 768 switch (pointer[i]) { 769 case NEW_ENV_VALUE: 770 fprintf(NetTrace, "%sVALUE ", noquote); 771 noquote = NQ; 772 break; 773 774 case NEW_ENV_VAR: 775 fprintf(NetTrace, "%sVAR ", noquote); 776 noquote = NQ; 777 break; 778 779 case ENV_ESC: 780 fprintf(NetTrace, "%sESC ", noquote); 781 noquote = NQ; 782 break; 783 784 case ENV_USERVAR: 785 fprintf(NetTrace, "%sUSERVAR ", noquote); 786 noquote = NQ; 787 break; 788 789 default: 790 if (isprint(pointer[i]) && pointer[i] != '"') { 791 if (*noquote) { 792 putc('"', NetTrace); 793 noquote = ""; 794 } 795 putc(pointer[i], NetTrace); 796 } else { 797 fprintf(NetTrace, "%s%03o ", noquote, 798 pointer[i]); 799 noquote = NQ; 800 } 801 break; 802 } 803 } 804 if (!noquote) 805 putc('"', NetTrace); 806 break; 807 } 808 } 809 break; 810 811 default: 812 if (TELOPT_OK(pointer[0])) 813 fprintf(NetTrace, "%s (unknown)", TELOPT(pointer[0])); 814 else 815 fprintf(NetTrace, "%d (unknown)", pointer[0]); 816 for (i = 1; i < length; i++) 817 fprintf(NetTrace, " %d", pointer[i]); 818 break; 819 } 820 if (direction) { 821 if (NetTrace == stdout) 822 fprintf(NetTrace, "\r\n"); 823 else 824 fprintf(NetTrace, "\n"); 825 } 826 if (NetTrace == stdout) 827 fflush(NetTrace); 828 } 829 } 830 831 /* EmptyTerminal - called to make sure that the terminal buffer is empty. 832 * Note that we consider the buffer to run all the 833 * way to the kernel (thus the poll). 834 */ 835 836 void 837 EmptyTerminal(void) 838 { 839 struct pollfd set[1]; 840 841 set[0].fd = tout; 842 set[0].events = POLLOUT; 843 844 if (TTYBYTES() == 0) { 845 (void) poll(set, 1, INFTIM); 846 } else { 847 while (TTYBYTES()) { 848 (void) ttyflush(0); 849 (void) poll(set, 1, INFTIM); 850 } 851 } 852 } 853 854 static void 855 SetForExit(void) 856 { 857 setconnmode(0); 858 do { 859 (void)telrcv(); /* Process any incoming data */ 860 EmptyTerminal(); 861 } while (ring_full_count(&netiring)); /* While there is any */ 862 setcommandmode(); 863 fflush(stdout); 864 fflush(stderr); 865 setconnmode(0); 866 EmptyTerminal(); /* Flush the path to the tty */ 867 setcommandmode(); 868 } 869 870 void 871 Exit(int returnCode) 872 { 873 SetForExit(); 874 exit(returnCode); 875 } 876 877 void 878 ExitString(const char *string, int returnCode) 879 { 880 fwrite(string, 1, strlen(string), stderr); 881 exit(returnCode); 882 } 883
Indexes created Sat Sep 20 22:09:52 GMT 2025