utilities.c revision 1.23
1 /* $NetBSD: utilities.c,v 1.23 2012/01/09 16:08:55 christos 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 1.23 2012/01/09 16:08:55 christos 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 #ifdef TN3270 59 #include "../sys_curses/telextrn.h" 60 #endif 61 62 #ifdef AUTHENTICATION 63 #include <libtelnet/auth.h> 64 #endif 65 #ifdef ENCRYPTION 66 #include <libtelnet/encrypt.h> 67 #endif 68 69 FILE *NetTrace = 0; /* Not in bss, since needs to stay */ 70 int prettydump; 71 72 /* 73 * upcase() 74 * 75 * Upcase (in place) the argument. 76 */ 77 78 void 79 upcase(char *argument) 80 { 81 int c; 82 83 while ((c = *argument) != 0) { 84 if (islower(c)) { 85 *argument = toupper(c); 86 } 87 argument++; 88 } 89 } 90 91 /* 92 * SetSockOpt() 93 * 94 * Compensate for differences in 4.2 and 4.3 systems. 95 */ 96 97 int 98 SetSockOpt(int fd, int level, int option, int yesno) 99 { 100 return setsockopt(fd, level, option, (char *)&yesno, sizeof yesno); 101 } 102 103 /* 105 * The following are routines used to print out debugging information. 106 */ 107 108 char NetTraceFile[256] = "(standard output)"; 109 110 void 111 SetNetTrace(char *file) 112 { 113 if (NetTrace && NetTrace != stdout) 114 fclose(NetTrace); 115 if (file && (strcmp(file, "-") != 0)) { 116 NetTrace = fopen(file, "w"); 117 if (NetTrace) { 118 strlcpy(NetTraceFile, file, sizeof(NetTraceFile)); 119 return; 120 } 121 fprintf(stderr, "Cannot open %s.\n", file); 122 } 123 NetTrace = stdout; 124 strlcpy(NetTraceFile, "(standard output)", sizeof(NetTraceFile)); 125 } 126 127 void 128 Dump(int direction, unsigned char *buffer, int length) 129 { 130 # define BYTES_PER_LINE 32 131 # define min(x,y) ((x<y)? x:y) 132 unsigned char *pThis; 133 int offset; 134 135 offset = 0; 136 137 while (length) { 138 /* print one line */ 139 fprintf(NetTrace, "%c 0x%x\t", direction, offset); 140 pThis = buffer; 141 if (prettydump) { 142 buffer = buffer + min(length, BYTES_PER_LINE/2); 143 while (pThis < buffer) { 144 fprintf(NetTrace, "%c%.2x", 145 (((*pThis)&0xff) == 0xff) ? '*' : ' ', 146 (*pThis)&0xff); 147 pThis++; 148 } 149 length -= BYTES_PER_LINE/2; 150 offset += BYTES_PER_LINE/2; 151 } else { 152 buffer = buffer + min(length, BYTES_PER_LINE); 153 while (pThis < buffer) { 154 fprintf(NetTrace, "%.2x", (*pThis)&0xff); 155 pThis++; 156 } 157 length -= BYTES_PER_LINE; 158 offset += BYTES_PER_LINE; 159 } 160 if (NetTrace == stdout) { 161 fprintf(NetTrace, "\r\n"); 162 } else { 163 fprintf(NetTrace, "\n"); 164 } 165 if (length < 0) { 166 fflush(NetTrace); 167 return; 168 } 169 /* find next unique line */ 170 } 171 fflush(NetTrace); 172 } 173 174 175 void 176 printoption(const char *direction, int cmd, int option) 177 { 178 if (!showoptions) 179 return; 180 if (cmd == IAC) { 181 if (TELCMD_OK(option)) 182 fprintf(NetTrace, "%s IAC %s", direction, TELCMD(option)); 183 else 184 fprintf(NetTrace, "%s IAC %d", direction, option); 185 } else { 186 const char *fmt; 187 fmt = (cmd == WILL) ? "WILL" : (cmd == WONT) ? "WONT" : 188 (cmd == DO) ? "DO" : (cmd == DONT) ? "DONT" : 0; 189 if (fmt) { 190 fprintf(NetTrace, "%s %s ", direction, fmt); 191 if (TELOPT_OK(option)) 192 fprintf(NetTrace, "%s", TELOPT(option)); 193 else if (option == TELOPT_EXOPL) 194 fprintf(NetTrace, "EXOPL"); 195 else 196 fprintf(NetTrace, "%d", option); 197 } else 198 fprintf(NetTrace, "%s %d %d", direction, cmd, option); 199 } 200 if (NetTrace == stdout) { 201 fprintf(NetTrace, "\r\n"); 202 fflush(NetTrace); 203 } else { 204 fprintf(NetTrace, "\n"); 205 } 206 return; 207 } 208 209 void 210 optionstatus(void) 211 { 212 int i; 213 extern char will_wont_resp[], do_dont_resp[]; 214 215 for (i = 0; i < 256; i++) { 216 if (do_dont_resp[i]) { 217 if (TELOPT_OK(i)) 218 printf("resp DO_DONT %s: %d\n", TELOPT(i), do_dont_resp[i]); 219 else if (TELCMD_OK(i)) 220 printf("resp DO_DONT %s: %d\n", TELCMD(i), do_dont_resp[i]); 221 else 222 printf("resp DO_DONT %d: %d\n", i, 223 do_dont_resp[i]); 224 if (my_want_state_is_do(i)) { 225 if (TELOPT_OK(i)) 226 printf("want DO %s\n", TELOPT(i)); 227 else if (TELCMD_OK(i)) 228 printf("want DO %s\n", TELCMD(i)); 229 else 230 printf("want DO %d\n", i); 231 } else { 232 if (TELOPT_OK(i)) 233 printf("want DONT %s\n", TELOPT(i)); 234 else if (TELCMD_OK(i)) 235 printf("want DONT %s\n", TELCMD(i)); 236 else 237 printf("want DONT %d\n", i); 238 } 239 } else { 240 if (my_state_is_do(i)) { 241 if (TELOPT_OK(i)) 242 printf(" DO %s\n", TELOPT(i)); 243 else if (TELCMD_OK(i)) 244 printf(" DO %s\n", TELCMD(i)); 245 else 246 printf(" DO %d\n", i); 247 } 248 } 249 if (will_wont_resp[i]) { 250 if (TELOPT_OK(i)) 251 printf("resp WILL_WONT %s: %d\n", TELOPT(i), will_wont_resp[i]); 252 else if (TELCMD_OK(i)) 253 printf("resp WILL_WONT %s: %d\n", TELCMD(i), will_wont_resp[i]); 254 else 255 printf("resp WILL_WONT %d: %d\n", 256 i, will_wont_resp[i]); 257 if (my_want_state_is_will(i)) { 258 if (TELOPT_OK(i)) 259 printf("want WILL %s\n", TELOPT(i)); 260 else if (TELCMD_OK(i)) 261 printf("want WILL %s\n", TELCMD(i)); 262 else 263 printf("want WILL %d\n", i); 264 } else { 265 if (TELOPT_OK(i)) 266 printf("want WONT %s\n", TELOPT(i)); 267 else if (TELCMD_OK(i)) 268 printf("want WONT %s\n", TELCMD(i)); 269 else 270 printf("want WONT %d\n", i); 271 } 272 } else { 273 if (my_state_is_will(i)) { 274 if (TELOPT_OK(i)) 275 printf(" WILL %s\n", TELOPT(i)); 276 else if (TELCMD_OK(i)) 277 printf(" WILL %s\n", TELCMD(i)); 278 else 279 printf(" WILL %d\n", i); 280 } 281 } 282 } 283 284 } 285 286 void 287 printsub( 288 int direction, /* '<' or '>' */ 289 unsigned char *pointer, /* where suboption data sits */ 290 int length) /* length of suboption data */ 291 { 292 int i; 293 #ifdef ENCRYPTION 294 char buf[512]; 295 #endif /* ENCRYPTION */ 296 extern int want_status_response; 297 298 if (showoptions || direction == 0 || 299 (want_status_response && (pointer[0] == TELOPT_STATUS))) { 300 if (direction) { 301 fprintf(NetTrace, "%s IAC SB ", 302 (direction == '<')? "RCVD":"SENT"); 303 if (length >= 3) { 304 int j; 305 306 i = pointer[length-2]; 307 j = pointer[length-1]; 308 309 if (i != IAC || j != SE) { 310 fprintf(NetTrace, "(terminated by "); 311 if (TELOPT_OK(i)) 312 fprintf(NetTrace, "%s ", TELOPT(i)); 313 else if (TELCMD_OK(i)) 314 fprintf(NetTrace, "%s ", TELCMD(i)); 315 else 316 fprintf(NetTrace, "%d ", i); 317 if (TELOPT_OK(j)) 318 fprintf(NetTrace, "%s", TELOPT(j)); 319 else if (TELCMD_OK(j)) 320 fprintf(NetTrace, "%s", TELCMD(j)); 321 else 322 fprintf(NetTrace, "%d", j); 323 fprintf(NetTrace, ", not IAC SE!) "); 324 } 325 } 326 length -= 2; 327 } 328 if (length < 1) { 329 fprintf(NetTrace, "(Empty suboption??\?)"); 330 if (NetTrace == stdout) 331 fflush(NetTrace); 332 return; 333 } 334 switch (pointer[0]) { 335 case TELOPT_TTYPE: 336 fprintf(NetTrace, "TERMINAL-TYPE "); 337 switch (pointer[1]) { 338 case TELQUAL_IS: 339 fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2); 340 break; 341 case TELQUAL_SEND: 342 fprintf(NetTrace, "SEND"); 343 break; 344 default: 345 fprintf(NetTrace, 346 "- unknown qualifier %d (0x%x).", 347 pointer[1], pointer[1]); 348 } 349 break; 350 case TELOPT_TSPEED: 351 fprintf(NetTrace, "TERMINAL-SPEED"); 352 if (length < 2) { 353 fprintf(NetTrace, " (empty suboption??\?)"); 354 break; 355 } 356 switch (pointer[1]) { 357 case TELQUAL_IS: 358 fprintf(NetTrace, " IS "); 359 fprintf(NetTrace, "%.*s", length-2, (char *)pointer+2); 360 break; 361 default: 362 if (pointer[1] == 1) 363 fprintf(NetTrace, " SEND"); 364 else 365 fprintf(NetTrace, " %d (unknown)", pointer[1]); 366 for (i = 2; i < length; i++) 367 fprintf(NetTrace, " ?%d?", pointer[i]); 368 break; 369 } 370 break; 371 372 case TELOPT_LFLOW: 373 fprintf(NetTrace, "TOGGLE-FLOW-CONTROL"); 374 if (length < 2) { 375 fprintf(NetTrace, " (empty suboption??\?)"); 376 break; 377 } 378 switch (pointer[1]) { 379 case LFLOW_OFF: 380 fprintf(NetTrace, " OFF"); break; 381 case LFLOW_ON: 382 fprintf(NetTrace, " ON"); break; 383 case LFLOW_RESTART_ANY: 384 fprintf(NetTrace, " RESTART-ANY"); break; 385 case LFLOW_RESTART_XON: 386 fprintf(NetTrace, " RESTART-XON"); break; 387 default: 388 fprintf(NetTrace, " %d (unknown)", pointer[1]); 389 } 390 for (i = 2; i < length; i++) 391 fprintf(NetTrace, " ?%d?", pointer[i]); 392 break; 393 394 case TELOPT_NAWS: 395 fprintf(NetTrace, "NAWS"); 396 if (length < 2) { 397 fprintf(NetTrace, " (empty suboption??\?)"); 398 break; 399 } 400 if (length == 2) { 401 fprintf(NetTrace, " ?%d?", pointer[1]); 402 break; 403 } 404 fprintf(NetTrace, " %d %d (%d)", 405 pointer[1], pointer[2], 406 (int)((((unsigned int)pointer[1])<<8)|((unsigned int)pointer[2]))); 407 if (length == 4) { 408 fprintf(NetTrace, " ?%d?", pointer[3]); 409 break; 410 } 411 fprintf(NetTrace, " %d %d (%d)", 412 pointer[3], pointer[4], 413 (int)((((unsigned int)pointer[3])<<8)|((unsigned int)pointer[4]))); 414 for (i = 5; i < length; i++) 415 fprintf(NetTrace, " ?%d?", pointer[i]); 416 break; 417 418 #ifdef AUTHENTICATION 419 case TELOPT_AUTHENTICATION: 420 fprintf(NetTrace, "AUTHENTICATION"); 421 if (length < 2) { 422 fprintf(NetTrace, " (empty suboption??\?)"); 423 break; 424 } 425 switch (pointer[1]) { 426 case TELQUAL_REPLY: 427 case TELQUAL_IS: 428 fprintf(NetTrace, " %s ", (pointer[1] == TELQUAL_IS) ? 429 "IS" : "REPLY"); 430 if (AUTHTYPE_NAME_OK(pointer[2])) 431 fprintf(NetTrace, "%s ", AUTHTYPE_NAME(pointer[2])); 432 else 433 fprintf(NetTrace, "%d ", pointer[2]); 434 if (length < 3) { 435 fprintf(NetTrace, "(partial suboption??\?)"); 436 break; 437 } 438 fprintf(NetTrace, "%s|%s", 439 ((pointer[3] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ? 440 "CLIENT" : "SERVER", 441 ((pointer[3] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ? 442 "MUTUAL" : "ONE-WAY"); 443 444 auth_printsub(&pointer[1], length - 1, buf, sizeof(buf)); 445 fprintf(NetTrace, "%s", buf); 446 break; 447 448 case TELQUAL_SEND: 449 i = 2; 450 fprintf(NetTrace, " SEND "); 451 while (i < length) { 452 if (AUTHTYPE_NAME_OK(pointer[i])) 453 fprintf(NetTrace, "%s ", AUTHTYPE_NAME(pointer[i])); 454 else 455 fprintf(NetTrace, "%d ", pointer[i]); 456 if (++i >= length) { 457 fprintf(NetTrace, "(partial suboption??\?)"); 458 break; 459 } 460 fprintf(NetTrace, "%s|%s ", 461 ((pointer[i] & AUTH_WHO_MASK) == AUTH_WHO_CLIENT) ? 462 "CLIENT" : "SERVER", 463 ((pointer[i] & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) ? 464 "MUTUAL" : "ONE-WAY"); 465 ++i; 466 } 467 break; 468 469 case TELQUAL_NAME: 470 i = 2; 471 fprintf(NetTrace, " NAME \""); 472 while (i < length) 473 putc(pointer[i++], NetTrace); 474 putc('"', NetTrace); 475 break; 476 477 default: 478 for (i = 2; i < length; i++) 479 fprintf(NetTrace, " ?%d?", pointer[i]); 480 break; 481 } 482 break; 483 #endif 484 485 #ifdef ENCRYPTION 486 case TELOPT_ENCRYPT: 487 fprintf(NetTrace, "ENCRYPT"); 488 if (length < 2) { 489 fprintf(NetTrace, " (empty suboption??\?)"); 490 break; 491 } 492 switch (pointer[1]) { 493 case ENCRYPT_START: 494 fprintf(NetTrace, " START"); 495 break; 496 497 case ENCRYPT_END: 498 fprintf(NetTrace, " END"); 499 break; 500 501 case ENCRYPT_REQSTART: 502 fprintf(NetTrace, " REQUEST-START"); 503 break; 504 505 case ENCRYPT_REQEND: 506 fprintf(NetTrace, " REQUEST-END"); 507 break; 508 509 case ENCRYPT_IS: 510 case ENCRYPT_REPLY: 511 fprintf(NetTrace, " %s ", (pointer[1] == ENCRYPT_IS) ? 512 "IS" : "REPLY"); 513 if (length < 3) { 514 fprintf(NetTrace, " (partial suboption??\?)"); 515 break; 516 } 517 if (ENCTYPE_NAME_OK(pointer[2])) 518 fprintf(NetTrace, "%s ", 519 ENCTYPE_NAME(pointer[2])); 520 else 521 fprintf(NetTrace, " %d (unknown)", pointer[2]); 522 523 encrypt_printsub(&pointer[1], length - 1, buf, 524 sizeof(buf)); 525 fprintf(NetTrace, "%s", buf); 526 break; 527 528 case ENCRYPT_SUPPORT: 529 i = 2; 530 fprintf(NetTrace, " SUPPORT "); 531 while (i < length) { 532 if (ENCTYPE_NAME_OK(pointer[i])) 533 fprintf(NetTrace, "%s ", 534 ENCTYPE_NAME(pointer[i])); 535 else 536 fprintf(NetTrace, "%d ", pointer[i]); 537 i++; 538 } 539 break; 540 541 case ENCRYPT_ENC_KEYID: 542 fprintf(NetTrace, " ENC_KEYID "); 543 goto encommon; 544 545 case ENCRYPT_DEC_KEYID: 546 fprintf(NetTrace, " DEC_KEYID "); 547 goto encommon; 548 549 default: 550 fprintf(NetTrace, " %d (unknown)", pointer[1]); 551 encommon: 552 for (i = 2; i < length; i++) 553 fprintf(NetTrace, " %d", pointer[i]); 554 break; 555 } 556 break; 557 #endif /* ENCRYPTION */ 558 559 case TELOPT_LINEMODE: 560 fprintf(NetTrace, "LINEMODE "); 561 if (length < 2) { 562 fprintf(NetTrace, " (empty suboption??\?)"); 563 break; 564 } 565 switch (pointer[1]) { 566 case WILL: 567 fprintf(NetTrace, "WILL "); 568 goto common; 569 case WONT: 570 fprintf(NetTrace, "WONT "); 571 goto common; 572 case DO: 573 fprintf(NetTrace, "DO "); 574 goto common; 575 case DONT: 576 fprintf(NetTrace, "DONT "); 577 common: 578 if (length < 3) { 579 fprintf(NetTrace, "(no option??\?)"); 580 break; 581 } 582 switch (pointer[2]) { 583 case LM_FORWARDMASK: 584 fprintf(NetTrace, "Forward Mask"); 585 for (i = 3; i < length; i++) 586 fprintf(NetTrace, " %x", pointer[i]); 587 break; 588 default: 589 fprintf(NetTrace, "%d (unknown)", pointer[2]); 590 for (i = 3; i < length; i++) 591 fprintf(NetTrace, " %d", pointer[i]); 592 break; 593 } 594 break; 595 596 case LM_SLC: 597 fprintf(NetTrace, "SLC"); 598 for (i = 2; i < length - 2; i += 3) { 599 if (SLC_NAME_OK(pointer[i+SLC_FUNC])) 600 fprintf(NetTrace, " %s", SLC_NAME(pointer[i+SLC_FUNC])); 601 else 602 fprintf(NetTrace, " %d", pointer[i+SLC_FUNC]); 603 switch (pointer[i+SLC_FLAGS]&SLC_LEVELBITS) { 604 case SLC_NOSUPPORT: 605 fprintf(NetTrace, " NOSUPPORT"); break; 606 case SLC_CANTCHANGE: 607 fprintf(NetTrace, " CANTCHANGE"); break; 608 case SLC_VARIABLE: 609 fprintf(NetTrace, " VARIABLE"); break; 610 case SLC_DEFAULT: 611 fprintf(NetTrace, " DEFAULT"); break; 612 } 613 fprintf(NetTrace, "%s%s%s", 614 pointer[i+SLC_FLAGS]&SLC_ACK ? "|ACK" : "", 615 pointer[i+SLC_FLAGS]&SLC_FLUSHIN ? "|FLUSHIN" : "", 616 pointer[i+SLC_FLAGS]&SLC_FLUSHOUT ? "|FLUSHOUT" : ""); 617 if (pointer[i+SLC_FLAGS]& ~(SLC_ACK|SLC_FLUSHIN| 618 SLC_FLUSHOUT| SLC_LEVELBITS)) 619 fprintf(NetTrace, "(0x%x)", pointer[i+SLC_FLAGS]); 620 fprintf(NetTrace, " %d;", pointer[i+SLC_VALUE]); 621 if ((pointer[i+SLC_VALUE] == IAC) && 622 (pointer[i+SLC_VALUE+1] == IAC)) 623 i++; 624 } 625 for (; i < length; i++) 626 fprintf(NetTrace, " ?%d?", pointer[i]); 627 break; 628 629 case LM_MODE: 630 fprintf(NetTrace, "MODE "); 631 if (length < 3) { 632 fprintf(NetTrace, "(no mode??\?)"); 633 break; 634 } 635 { 636 char tbuf[64]; 637 sprintf(tbuf, "%s%s%s%s%s", 638 pointer[2]&MODE_EDIT ? "|EDIT" : "", 639 pointer[2]&MODE_TRAPSIG ? "|TRAPSIG" : "", 640 pointer[2]&MODE_SOFT_TAB ? "|SOFT_TAB" : "", 641 pointer[2]&MODE_LIT_ECHO ? "|LIT_ECHO" : "", 642 pointer[2]&MODE_ACK ? "|ACK" : ""); 643 fprintf(NetTrace, "%s", tbuf[1] ? &tbuf[1] : "0"); 644 } 645 if (pointer[2]&~(MODE_MASK)) 646 fprintf(NetTrace, " (0x%x)", pointer[2]); 647 for (i = 3; i < length; i++) 648 fprintf(NetTrace, " ?0x%x?", pointer[i]); 649 break; 650 default: 651 fprintf(NetTrace, "%d (unknown)", pointer[1]); 652 for (i = 2; i < length; i++) 653 fprintf(NetTrace, " %d", pointer[i]); 654 } 655 break; 656 657 case TELOPT_STATUS: { 658 const char *cp; 659 int j, k; 660 661 fprintf(NetTrace, "STATUS"); 662 663 switch (pointer[1]) { 664 default: 665 if (pointer[1] == TELQUAL_SEND) 666 fprintf(NetTrace, " SEND"); 667 else 668 fprintf(NetTrace, " %d (unknown)", pointer[1]); 669 for (i = 2; i < length; i++) 670 fprintf(NetTrace, " ?%d?", pointer[i]); 671 break; 672 case TELQUAL_IS: 673 if (--want_status_response < 0) 674 want_status_response = 0; 675 if (NetTrace == stdout) 676 fprintf(NetTrace, " IS\r\n"); 677 else 678 fprintf(NetTrace, " IS\n"); 679 680 for (i = 2; i < length; i++) { 681 switch(pointer[i]) { 682 case DO: cp = "DO"; goto common2; 683 case DONT: cp = "DONT"; goto common2; 684 case WILL: cp = "WILL"; goto common2; 685 case WONT: cp = "WONT"; goto common2; 686 common2: 687 i++; 688 if (TELOPT_OK((int)pointer[i])) 689 fprintf(NetTrace, " %s %s", cp, TELOPT(pointer[i])); 690 else 691 fprintf(NetTrace, " %s %d", cp, pointer[i]); 692 693 if (NetTrace == stdout) 694 fprintf(NetTrace, "\r\n"); 695 else 696 fprintf(NetTrace, "\n"); 697 break; 698 699 case SB: 700 fprintf(NetTrace, " SB "); 701 i++; 702 j = k = i; 703 while (j < length) { 704 if (pointer[j] == SE) { 705 if (j+1 == length) 706 break; 707 if (pointer[j+1] == SE) 708 j++; 709 else 710 break; 711 } 712 pointer[k++] = pointer[j++]; 713 } 714 printsub(0, &pointer[i], k - i); 715 if (i < length) { 716 fprintf(NetTrace, " SE"); 717 i = j; 718 } else 719 i = j - 1; 720 721 if (NetTrace == stdout) 722 fprintf(NetTrace, "\r\n"); 723 else 724 fprintf(NetTrace, "\n"); 725 726 break; 727 728 default: 729 fprintf(NetTrace, " %d", pointer[i]); 730 break; 731 } 732 } 733 break; 734 } 735 break; 736 } 737 738 case TELOPT_XDISPLOC: 739 fprintf(NetTrace, "X-DISPLAY-LOCATION "); 740 switch (pointer[1]) { 741 case TELQUAL_IS: 742 fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2); 743 break; 744 case TELQUAL_SEND: 745 fprintf(NetTrace, "SEND"); 746 break; 747 default: 748 fprintf(NetTrace, "- unknown qualifier %d (0x%x).", 749 pointer[1], pointer[1]); 750 } 751 break; 752 753 case TELOPT_NEW_ENVIRON: 754 fprintf(NetTrace, "NEW-ENVIRON "); 755 #ifdef OLD_ENVIRON 756 goto env_common1; 757 case TELOPT_OLD_ENVIRON: 758 fprintf(NetTrace, "OLD-ENVIRON"); 759 env_common1: 760 #endif 761 switch (pointer[1]) { 762 case TELQUAL_IS: 763 fprintf(NetTrace, "IS "); 764 goto env_common; 765 case TELQUAL_SEND: 766 fprintf(NetTrace, "SEND "); 767 goto env_common; 768 case TELQUAL_INFO: 769 fprintf(NetTrace, "INFO "); 770 env_common: 771 { 772 static const char NQ[] = "\" "; 773 const char *noquote = NQ; 774 #if defined(ENV_HACK) && defined(OLD_ENVIRON) 775 extern int old_env_var, old_env_value; 776 #endif 777 for (i = 2; i < length; i++ ) { 778 switch (pointer[i]) { 779 case NEW_ENV_VALUE: 780 #ifdef OLD_ENVIRON 781 /* case NEW_ENV_OVAR: */ 782 if (pointer[0] == TELOPT_OLD_ENVIRON) { 783 # ifdef ENV_HACK 784 if (old_env_var == OLD_ENV_VALUE) 785 fprintf(NetTrace, "%s(VALUE) ", noquote); 786 else 787 # endif 788 fprintf(NetTrace, "%sVAR ", noquote); 789 } else 790 #endif /* OLD_ENVIRON */ 791 fprintf(NetTrace, "%sVALUE ", noquote); 792 noquote = NQ; 793 break; 794 795 case NEW_ENV_VAR: 796 #ifdef OLD_ENVIRON 797 /* case OLD_ENV_VALUE: */ 798 if (pointer[0] == TELOPT_OLD_ENVIRON) { 799 # ifdef ENV_HACK 800 if (old_env_value == OLD_ENV_VAR) 801 fprintf(NetTrace, "%s(VAR) ", noquote); 802 else 803 # endif 804 fprintf(NetTrace, "%sVALUE ", noquote); 805 } else 806 #endif /* OLD_ENVIRON */ 807 fprintf(NetTrace, "%sVAR ", noquote); 808 noquote = NQ; 809 break; 810 811 case ENV_ESC: 812 fprintf(NetTrace, "%sESC ", noquote); 813 noquote = NQ; 814 break; 815 816 case ENV_USERVAR: 817 fprintf(NetTrace, "%sUSERVAR ", noquote); 818 noquote = NQ; 819 break; 820 821 default: 822 if (isprint(pointer[i]) && pointer[i] != '"') { 823 if (*noquote) { 824 putc('"', NetTrace); 825 noquote = ""; 826 } 827 putc(pointer[i], NetTrace); 828 } else { 829 fprintf(NetTrace, "%s%03o ", noquote, 830 pointer[i]); 831 noquote = NQ; 832 } 833 break; 834 } 835 } 836 if (!noquote) 837 putc('"', NetTrace); 838 break; 839 } 840 } 841 break; 842 843 default: 844 if (TELOPT_OK(pointer[0])) 845 fprintf(NetTrace, "%s (unknown)", TELOPT(pointer[0])); 846 else 847 fprintf(NetTrace, "%d (unknown)", pointer[0]); 848 for (i = 1; i < length; i++) 849 fprintf(NetTrace, " %d", pointer[i]); 850 break; 851 } 852 if (direction) { 853 if (NetTrace == stdout) 854 fprintf(NetTrace, "\r\n"); 855 else 856 fprintf(NetTrace, "\n"); 857 } 858 if (NetTrace == stdout) 859 fflush(NetTrace); 860 } 861 } 862 863 /* EmptyTerminal - called to make sure that the terminal buffer is empty. 864 * Note that we consider the buffer to run all the 865 * way to the kernel (thus the poll). 866 */ 867 868 void 869 EmptyTerminal(void) 870 { 871 struct pollfd set[1]; 872 873 set[0].fd = tout; 874 set[0].events = POLLOUT; 875 876 if (TTYBYTES() == 0) { 877 (void) poll(set, 1, INFTIM); 878 } else { 879 while (TTYBYTES()) { 880 (void) ttyflush(0); 881 (void) poll(set, 1, INFTIM); 882 } 883 } 884 } 885 886 void 887 SetForExit(void) 888 { 889 setconnmode(0); 890 #ifdef TN3270 891 if (In3270) { 892 Finish3270(); 893 } 894 #else /* defined(TN3270) */ 895 do { 896 (void)telrcv(); /* Process any incoming data */ 897 EmptyTerminal(); 898 } while (ring_full_count(&netiring)); /* While there is any */ 899 #endif /* defined(TN3270) */ 900 setcommandmode(); 901 fflush(stdout); 902 fflush(stderr); 903 #ifdef TN3270 904 if (In3270) { 905 StopScreen(1); 906 } 907 #endif /* defined(TN3270) */ 908 setconnmode(0); 909 EmptyTerminal(); /* Flush the path to the tty */ 910 setcommandmode(); 911 } 912 913 void 914 Exit(int returnCode) 915 { 916 SetForExit(); 917 exit(returnCode); 918 } 919 920 void 921 ExitString(const char *string, int returnCode) 922 { 923 SetForExit(); 924 fwrite(string, 1, strlen(string), stderr); 925 exit(returnCode); 926 } 927
Indexes created Tue Sep 23 21:09:50 GMT 2025