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Drop main() prototype. Syncs with NetBSD-8
[minix.git] / usr.bin / telnet / utilities.c
blob2bab18b6821cf574a454f03294971371aface493
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 \f
103 /*
104 * The following are routines used to print out debugging information.
105 */
106
107 char NetTraceFile[256] = "(standard output)";
108
109 void
110 SetNetTrace(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 sprintf(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 #ifdef OLD_ENVIRON
755 goto env_common1;
756 case TELOPT_OLD_ENVIRON:
757 fprintf(NetTrace, "OLD-ENVIRON");
758 env_common1:
759 #endif
760 switch (pointer[1]) {
761 case TELQUAL_IS:
762 fprintf(NetTrace, "IS ");
763 goto env_common;
764 case TELQUAL_SEND:
765 fprintf(NetTrace, "SEND ");
766 goto env_common;
767 case TELQUAL_INFO:
768 fprintf(NetTrace, "INFO ");
769 env_common:
770 {
771 static const char NQ[] = "\" ";
772 const char *noquote = NQ;
773 #if defined(ENV_HACK) && defined(OLD_ENVIRON)
774 extern int old_env_var, old_env_value;
775 #endif
776 for (i = 2; i < length; i++ ) {
777 switch (pointer[i]) {
778 case NEW_ENV_VALUE:
779 #ifdef OLD_ENVIRON
780 /* case NEW_ENV_OVAR: */
781 if (pointer[0] == TELOPT_OLD_ENVIRON) {
782 # ifdef ENV_HACK
783 if (old_env_var == OLD_ENV_VALUE)
784 fprintf(NetTrace, "%s(VALUE) ", noquote);
785 else
786 # endif
787 fprintf(NetTrace, "%sVAR ", noquote);
788 } else
789 #endif /* OLD_ENVIRON */
790 fprintf(NetTrace, "%sVALUE ", noquote);
791 noquote = NQ;
792 break;
793
794 case NEW_ENV_VAR:
795 #ifdef OLD_ENVIRON
796 /* case OLD_ENV_VALUE: */
797 if (pointer[0] == TELOPT_OLD_ENVIRON) {
798 # ifdef ENV_HACK
799 if (old_env_value == OLD_ENV_VAR)
800 fprintf(NetTrace, "%s(VAR) ", noquote);
801 else
802 # endif
803 fprintf(NetTrace, "%sVALUE ", noquote);
804 } else
805 #endif /* OLD_ENVIRON */
806 fprintf(NetTrace, "%sVAR ", noquote);
807 noquote = NQ;
808 break;
809
810 case ENV_ESC:
811 fprintf(NetTrace, "%sESC ", noquote);
812 noquote = NQ;
813 break;
814
815 case ENV_USERVAR:
816 fprintf(NetTrace, "%sUSERVAR ", noquote);
817 noquote = NQ;
818 break;
819
820 default:
821 if (isprint(pointer[i]) && pointer[i] != '"') {
822 if (*noquote) {
823 putc('"', NetTrace);
824 noquote = "";
825 }
826 putc(pointer[i], NetTrace);
827 } else {
828 fprintf(NetTrace, "%s%03o ", noquote,
829 pointer[i]);
830 noquote = NQ;
831 }
832 break;
833 }
834 }
835 if (!noquote)
836 putc('"', NetTrace);
837 break;
838 }
839 }
840 break;
841
842 default:
843 if (TELOPT_OK(pointer[0]))
844 fprintf(NetTrace, "%s (unknown)", TELOPT(pointer[0]));
845 else
846 fprintf(NetTrace, "%d (unknown)", pointer[0]);
847 for (i = 1; i < length; i++)
848 fprintf(NetTrace, " %d", pointer[i]);
849 break;
850 }
851 if (direction) {
852 if (NetTrace == stdout)
853 fprintf(NetTrace, "\r\n");
854 else
855 fprintf(NetTrace, "\n");
856 }
857 if (NetTrace == stdout)
858 fflush(NetTrace);
859 }
860 }
861
862 /* EmptyTerminal - called to make sure that the terminal buffer is empty.
863 * Note that we consider the buffer to run all the
864 * way to the kernel (thus the poll).
865 */
866
867 void
868 EmptyTerminal(void)
869 {
870 struct pollfd set[1];
871
872 set[0].fd = tout;
873 set[0].events = POLLOUT;
874
875 if (TTYBYTES() == 0) {
876 (void) poll(set, 1, INFTIM);
877 } else {
878 while (TTYBYTES()) {
879 (void) ttyflush(0);
880 (void) poll(set, 1, INFTIM);
881 }
882 }
883 }
884
885 void
886 SetForExit(void)
887 {
888 setconnmode(0);
889 #ifdef TN3270
890 if (In3270) {
891 Finish3270();
892 }
893 #else /* defined(TN3270) */
894 do {
895 (void)telrcv(); /* Process any incoming data */
896 EmptyTerminal();
897 } while (ring_full_count(&netiring)); /* While there is any */
898 #endif /* defined(TN3270) */
899 setcommandmode();
900 fflush(stdout);
901 fflush(stderr);
902 #ifdef TN3270
903 if (In3270) {
904 StopScreen(1);
905 }
906 #endif /* defined(TN3270) */
907 setconnmode(0);
908 EmptyTerminal(); /* Flush the path to the tty */
909 setcommandmode();
910 }
911
912 void
913 Exit(int returnCode)
914 {
915 SetForExit();
916 exit(returnCode);
917 }
918
919 void
920 ExitString(const char *string, int returnCode)
921 {
922 SetForExit();
923 fwrite(string, 1, strlen(string), stderr);
924 exit(returnCode);
925 }
MINIX 3 (repo.or.cz mirror)