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kernel - support dummy reallocblks in devfs
[dragonfly.git] / sbin / routed / trace.c
blob04d1470850b40062228435bd8e0d99418802493e
1 /*
2 * Copyright (c) 1983, 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 * $FreeBSD: src/sbin/routed/trace.c,v 1.5.2.1 2002/11/07 17:19:13 imp Exp $
30 */
31
32 #define RIPCMDS
33 #include "defs.h"
34 #include "pathnames.h"
35 #include <sys/stat.h>
36 #include <sys/signal.h>
37 #include <fcntl.h>
38
39 #if !defined(__NetBSD__)
40 static char sccsid[] __attribute__((unused)) = "@(#)trace.c 8.1 (Berkeley) 6/5/93";
41 #elif defined(__NetBSD__)
42 __RCSID("$NetBSD$");
43 #endif
44
45
46 #define NRECORDS 50 /* size of circular trace buffer */
47
48 int tracelevel, new_tracelevel;
49 FILE *ftrace; /* output trace file */
50 static const char *sigtrace_pat = "%s";
51 static char savetracename[MAXPATHLEN+1];
52 char inittracename[MAXPATHLEN+1];
53 int file_trace; /* 1=tracing to file, not stdout */
54
55 static void trace_dump(void);
56 static void tmsg(const char *, ...) PATTRIB(1,2);
57
58
59 /* convert string to printable characters
60 */
61 static char *
62 qstring(u_char *s, int len)
63 {
64 static char buf[8*20+1];
65 char *p;
66 u_char *s2, c;
67
68
69 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) {
70 c = *s++;
71 if (c == '\0') {
72 for (s2 = s+1; s2 < &s[len]; s2++) {
73 if (*s2 != '\0')
74 break;
75 }
76 if (s2 >= &s[len])
77 goto exit;
78 }
79
80 if (c >= ' ' && c < 0x7f && c != '\\') {
81 *p++ = c;
82 continue;
83 }
84 *p++ = '\\';
85 switch (c) {
86 case '\\':
87 *p++ = '\\';
88 break;
89 case '\n':
90 *p++= 'n';
91 break;
92 case '\r':
93 *p++= 'r';
94 break;
95 case '\t':
96 *p++ = 't';
97 break;
98 case '\b':
99 *p++ = 'b';
100 break;
101 default:
102 p += sprintf(p,"%o",c);
103 break;
104 }
105 }
106 exit:
107 *p = '\0';
108 return buf;
109 }
110
111
112 /* convert IP address to a string, but not into a single buffer
113 */
114 char *
115 naddr_ntoa(naddr a)
116 {
117 #define NUM_BUFS 4
118 static int bufno;
119 static struct {
120 char str[16]; /* xxx.xxx.xxx.xxx\0 */
121 } bufs[NUM_BUFS];
122 char *s;
123 struct in_addr addr;
124
125 addr.s_addr = a;
126 s = strcpy(bufs[bufno].str, inet_ntoa(addr));
127 bufno = (bufno+1) % NUM_BUFS;
128 return s;
129 #undef NUM_BUFS
130 }
131
132
133 const char *
134 saddr_ntoa(struct sockaddr *sa)
135 {
136 return (sa == NULL) ? "?" : naddr_ntoa(S_ADDR(sa));
137 }
138
139
140 static char *
141 ts(time_t secs) {
142 static char s[20];
143
144 secs += epoch.tv_sec;
145 memcpy(s, ctime(&secs)+11, 8);
146 s[8] = '\0';
147 return s;
148 }
149
150
151 /* On each event, display a time stamp.
152 * This assumes that 'now' is update once for each event, and
153 * that at least now.tv_usec changes.
154 */
155 static struct timeval lastlog_time;
156
157 void
158 lastlog(void)
159 {
160 if (lastlog_time.tv_sec != now.tv_sec
161 || lastlog_time.tv_usec != now.tv_usec) {
162 fprintf(ftrace, "-- %s --\n", ts(now.tv_sec));
163 lastlog_time = now;
164 }
165 }
166
167
168 static void
169 tmsg(const char *p, ...)
170 {
171 va_list args;
172
173 if (ftrace != NULL) {
174 lastlog();
175 va_start(args, p);
176 vfprintf(ftrace, p, args);
177 fputc('\n',ftrace);
178 fflush(ftrace);
179 }
180 }
181
182
183 void
184 trace_close(int zap_stdio)
185 {
186 int fd;
187
188
189 fflush(stdout);
190 fflush(stderr);
191
192 if (ftrace != NULL && zap_stdio) {
193 if (ftrace != stdout)
194 fclose(ftrace);
195 ftrace = NULL;
196 fd = open(_PATH_DEVNULL, O_RDWR);
197 if (isatty(STDIN_FILENO))
198 dup2(fd, STDIN_FILENO);
199 if (isatty(STDOUT_FILENO))
200 dup2(fd, STDOUT_FILENO);
201 if (isatty(STDERR_FILENO))
202 dup2(fd, STDERR_FILENO);
203 close(fd);
204 }
205 lastlog_time.tv_sec = 0;
206 }
207
208
209 void
210 trace_flush(void)
211 {
212 if (ftrace != NULL) {
213 fflush(ftrace);
214 if (ferror(ftrace))
215 trace_off("tracing off: %s", strerror(ferror(ftrace)));
216 }
217 }
218
219
220 void
221 trace_off(const char *p, ...)
222 {
223 va_list args;
224
225
226 if (ftrace != NULL) {
227 lastlog();
228 va_start(args, p);
229 vfprintf(ftrace, p, args);
230 fputc('\n',ftrace);
231 }
232 trace_close(file_trace);
233
234 new_tracelevel = tracelevel = 0;
235 }
236
237
238 /* log a change in tracing
239 */
240 void
241 tracelevel_msg(const char *pat,
242 int dump) /* -1=no dump, 0=default, 1=force */
243 {
244 static const char *off_msgs[MAX_TRACELEVEL] = {
245 "Tracing actions stopped",
246 "Tracing packets stopped",
247 "Tracing packet contents stopped",
248 "Tracing kernel changes stopped",
249 };
250 static const char *on_msgs[MAX_TRACELEVEL] = {
251 "Tracing actions started",
252 "Tracing packets started",
253 "Tracing packet contents started",
254 "Tracing kernel changes started",
255 };
256 u_int old_tracelevel = tracelevel;
257
258
259 if (new_tracelevel < 0)
260 new_tracelevel = 0;
261 else if (new_tracelevel > MAX_TRACELEVEL)
262 new_tracelevel = MAX_TRACELEVEL;
263
264 if (new_tracelevel < tracelevel) {
265 if (new_tracelevel <= 0) {
266 trace_off(pat, off_msgs[0]);
267 } else do {
268 tmsg(pat, off_msgs[tracelevel]);
269 }
270 while (--tracelevel != new_tracelevel);
271
272 } else if (new_tracelevel > tracelevel) {
273 do {
274 tmsg(pat, on_msgs[tracelevel++]);
275 } while (tracelevel != new_tracelevel);
276 }
277
278 if (dump > 0
279 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0))
280 trace_dump();
281 }
282
283
284 void
285 set_tracefile(const char *filename,
286 const char *pat,
287 int dump) /* -1=no dump, 0=default, 1=force */
288 {
289 struct stat stbuf;
290 FILE *n_ftrace;
291 const char *fn;
292
293
294 /* Allow a null filename to increase the level if the trace file
295 * is already open or if coming from a trusted source, such as
296 * a signal or the command line.
297 */
298 if (filename == NULL || filename[0] == '\0') {
299 filename = NULL;
300 if (ftrace == NULL) {
301 if (inittracename[0] == '\0') {
302 msglog("missing trace file name");
303 return;
304 }
305 fn = inittracename;
306 } else {
307 fn = NULL;
308 }
309
310 } else if (!strcmp(filename,"dump/../table")) {
311 trace_dump();
312 return;
313
314 } else {
315 /* Allow the file specified with "-T file" to be reopened,
316 * but require all other names specified over the net to
317 * match the official path. The path can specify a directory
318 * in which the file is to be created.
319 */
320 if (strcmp(filename, inittracename)
321 #ifdef _PATH_TRACE
322 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1)
323 || strstr(filename,"../")
324 || 0 > stat(_PATH_TRACE, &stbuf))
325 #endif
326 ) {
327 msglog("wrong trace file \"%s\"", filename);
328 return;
329 }
330
331 /* If the new tracefile exists, it must be a regular file.
332 */
333 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) {
334 msglog("wrong type (%#x) of trace file \"%s\"",
335 stbuf.st_mode, filename);
336 return;
337 }
338
339 fn = filename;
340 }
341
342 if (fn != NULL) {
343 n_ftrace = fopen(fn, "a");
344 if (n_ftrace == NULL) {
345 msglog("failed to open trace file \"%s\" %s",
346 fn, strerror(errno));
347 if (fn == inittracename)
348 inittracename[0] = '\0';
349 return;
350 }
351
352 tmsg("switch to trace file %s", fn);
353
354 trace_close(file_trace = 1);
355
356 if (fn != savetracename)
357 strncpy(savetracename, fn, sizeof(savetracename)-1);
358 ftrace = n_ftrace;
359
360 fflush(stdout);
361 fflush(stderr);
362 dup2(fileno(ftrace), STDOUT_FILENO);
363 dup2(fileno(ftrace), STDERR_FILENO);
364 }
365
366 if (new_tracelevel == 0 || filename == NULL)
367 new_tracelevel++;
368 tracelevel_msg(pat, dump != 0 ? dump : (filename != NULL));
369 }
370
371
372 /* ARGSUSED */
373 void
374 sigtrace_on(int s UNUSED)
375 {
376 new_tracelevel++;
377 sigtrace_pat = "SIGUSR1: %s";
378 }
379
380
381 /* ARGSUSED */
382 void
383 sigtrace_off(int s UNUSED)
384 {
385 new_tracelevel--;
386 sigtrace_pat = "SIGUSR2: %s";
387 }
388
389
390 /* Set tracing after a signal.
391 */
392 void
393 set_tracelevel(void)
394 {
395 if (new_tracelevel == tracelevel)
396 return;
397
398 /* If tracing entirely off, and there was no tracefile specified
399 * on the command line, then leave it off.
400 */
401 if (new_tracelevel > tracelevel && ftrace == NULL) {
402 if (savetracename[0] != '\0') {
403 set_tracefile(savetracename,sigtrace_pat,0);
404 } else if (inittracename[0] != '\0') {
405 set_tracefile(inittracename,sigtrace_pat,0);
406 } else {
407 new_tracelevel = 0;
408 return;
409 }
410 } else {
411 tracelevel_msg(sigtrace_pat, 0);
412 }
413 }
414
415
416 /* display an address
417 */
418 char *
419 addrname(naddr addr, /* in network byte order */
420 naddr mask,
421 int force) /* 0=show mask if nonstandard, */
422 { /* 1=always show mask, 2=never */
423 #define NUM_BUFS 4
424 static int bufno;
425 static struct {
426 char str[15+20];
427 } bufs[NUM_BUFS];
428 char *s, *sp;
429 naddr dmask;
430 int i;
431
432 s = strcpy(bufs[bufno].str, naddr_ntoa(addr));
433 bufno = (bufno+1) % NUM_BUFS;
434
435 if (force == 1 || (force == 0 && mask != std_mask(addr))) {
436 sp = &s[strlen(s)];
437
438 dmask = mask & -mask;
439 if (mask + dmask == 0) {
440 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++)
441 continue;
442 sprintf(sp, "/%d", 32-i);
443
444 } else {
445 sprintf(sp, " (mask %#x)", (u_int)mask);
446 }
447 }
448
449 return s;
450 #undef NUM_BUFS
451 }
452
453
454 /* display a bit-field
455 */
456 struct bits {
457 u_int bits_mask;
458 u_int bits_clear;
459 const char *bits_name;
460 };
461
462 static struct bits if_bits[] = {
463 { IFF_LOOPBACK, 0, "LOOPBACK" },
464 { IFF_POINTOPOINT, 0, "PT-TO-PT" },
465 { 0, 0, 0}
466 };
467
468 static struct bits is_bits[] = {
469 { IS_ALIAS, 0, "ALIAS" },
470 { IS_SUBNET, 0, "" },
471 { IS_REMOTE, (IS_NO_RDISC
472 | IS_BCAST_RDISC), "REMOTE" },
473 { IS_PASSIVE, (IS_NO_RDISC
474 | IS_NO_RIP
475 | IS_NO_SUPER_AG
476 | IS_PM_RDISC
477 | IS_NO_AG), "PASSIVE" },
478 { IS_EXTERNAL, 0, "EXTERNAL" },
479 { IS_CHECKED, 0, "" },
480 { IS_ALL_HOSTS, 0, "" },
481 { IS_ALL_ROUTERS, 0, "" },
482 { IS_DISTRUST, 0, "DISTRUST" },
483 { IS_BROKE, IS_SICK, "BROKEN" },
484 { IS_SICK, 0, "SICK" },
485 { IS_DUP, 0, "DUPLICATE" },
486 { IS_REDIRECT_OK, 0, "REDIRECT_OK" },
487 { IS_NEED_NET_SYN, 0, "" },
488 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" },
489 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" },
490 { (IS_NO_RIPV1_IN
491 | IS_NO_RIPV2_IN
492 | IS_NO_RIPV1_OUT
493 | IS_NO_RIPV2_OUT), 0, "NO_RIP" },
494 { (IS_NO_RIPV1_IN
495 | IS_NO_RIPV1_OUT), 0, "RIPV2" },
496 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" },
497 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" },
498 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" },
499 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" },
500 { (IS_NO_ADV_IN
501 | IS_NO_SOL_OUT
502 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" },
503 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" },
504 { IS_SOL_OUT, 0, "SEND_SOLICIT" },
505 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" },
506 { IS_ADV_OUT, 0, "RDISC_ADV" },
507 { IS_BCAST_RDISC, 0, "BCAST_RDISC" },
508 { IS_PM_RDISC, 0, "" },
509 { 0, 0, "%#x"}
510 };
511
512 static struct bits rs_bits[] = {
513 { RS_IF, 0, "IF" },
514 { RS_NET_INT, RS_NET_SYN, "NET_INT" },
515 { RS_NET_SYN, 0, "NET_SYN" },
516 { RS_SUBNET, 0, "" },
517 { RS_LOCAL, 0, "LOCAL" },
518 { RS_MHOME, 0, "MHOME" },
519 { RS_STATIC, 0, "STATIC" },
520 { RS_RDISC, 0, "RDISC" },
521 { 0, 0, "%#x"}
522 };
523
524
525 static void
526 trace_bits(const struct bits *tbl,
527 u_int field,
528 int force)
529 {
530 u_int b;
531 char c;
532
533 if (force) {
534 putc('<', ftrace);
535 c = 0;
536 } else {
537 c = '<';
538 }
539
540 while (field != 0
541 && (b = tbl->bits_mask) != 0) {
542 if ((b & field) == b) {
543 if (tbl->bits_name[0] != '\0') {
544 if (c)
545 putc(c, ftrace);
546 fprintf(ftrace, "%s", tbl->bits_name);
547 c = '|';
548 }
549 if (0 == (field &= ~(b | tbl->bits_clear)))
550 break;
551 }
552 tbl++;
553 }
554 if (field != 0 && tbl->bits_name != NULL) {
555 if (c)
556 putc(c, ftrace);
557 fprintf(ftrace, tbl->bits_name, field);
558 c = '|';
559 }
560
561 if (c != '<' || force)
562 fputs("> ", ftrace);
563 }
564
565
566 char *
567 rtname(naddr dst,
568 naddr mask,
569 naddr gate)
570 {
571 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */
572 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */
573 int i;
574
575 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0));
576 sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate));
577 return buf;
578 }
579
580
581 static void
582 print_rts(struct rt_spare *rts,
583 int force_metric, /* -1=suppress, 0=default */
584 int force_ifp, /* -1=suppress, 0=default */
585 int force_router, /* -1=suppress, 0=default, 1=display */
586 int force_tag, /* -1=suppress, 0=default, 1=display */
587 int force_time) /* 0=suppress, 1=display */
588 {
589 int i;
590
591
592 if (force_metric >= 0)
593 fprintf(ftrace, "metric=%-2d ", rts->rts_metric);
594 if (force_ifp >= 0)
595 fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ?
596 "if?" : rts->rts_ifp->int_name));
597 if (force_router > 0
598 || (force_router == 0 && rts->rts_router != rts->rts_gate))
599 fprintf(ftrace, "router=%s ", naddr_ntoa(rts->rts_router));
600 if (force_time > 0)
601 fprintf(ftrace, "%s ", ts(rts->rts_time));
602 if (force_tag > 0
603 || (force_tag == 0 && rts->rts_tag != 0))
604 fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag));
605 if (rts->rts_de_ag != 0) {
606 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++)
607 continue;
608 fprintf(ftrace, "de_ag=%d ", i);
609 }
610
611 }
612
613
614 void
615 trace_if(const char *act,
616 struct interface *ifp)
617 {
618 if (!TRACEACTIONS || ftrace == NULL)
619 return;
620
621 lastlog();
622 fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name);
623 fprintf(ftrace, "%-15s-->%-15s ",
624 naddr_ntoa(ifp->int_addr),
625 addrname(((ifp->int_if_flags & IFF_POINTOPOINT)
626 ? ifp->int_dstaddr : htonl(ifp->int_net)),
627 ifp->int_mask, 1));
628 if (ifp->int_metric != 0)
629 fprintf(ftrace, "metric=%d ", ifp->int_metric);
630 if (!IS_RIP_OUT_OFF(ifp->int_state)
631 && ifp->int_d_metric != 0)
632 fprintf(ftrace, "fake_default=%d ", ifp->int_d_metric);
633 trace_bits(if_bits, ifp->int_if_flags, 0);
634 trace_bits(is_bits, ifp->int_state, 0);
635 fputc('\n',ftrace);
636 }
637
638
639 void
640 trace_upslot(struct rt_entry *rt,
641 struct rt_spare *rts,
642 struct rt_spare *new)
643 {
644 if (!TRACEACTIONS || ftrace == NULL)
645 return;
646
647 if (rts->rts_gate == new->rts_gate
648 && rts->rts_router == new->rts_router
649 && rts->rts_metric == new->rts_metric
650 && rts->rts_tag == new->rts_tag
651 && rts->rts_de_ag == new->rts_de_ag)
652 return;
653
654 lastlog();
655 if (new->rts_gate == 0) {
656 fprintf(ftrace, "Del #%d %-35s ",
657 (int)(rts - rt->rt_spares),
658 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate));
659 print_rts(rts, 0,0,0,0,
660 (rts != rt->rt_spares
661 || AGE_RT(rt->rt_state,new->rts_ifp)));
662
663 } else if (rts->rts_gate != RIP_DEFAULT) {
664 fprintf(ftrace, "Chg #%d %-35s ",
665 (int)(rts - rt->rt_spares),
666 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate));
667 print_rts(rts, 0,0,
668 rts->rts_gate != new->rts_gate,
669 rts->rts_tag != new->rts_tag,
670 rts != rt->rt_spares || AGE_RT(rt->rt_state,
671 rt->rt_ifp));
672
673 fprintf(ftrace, "\n %19s%-16s ", "",
674 (new->rts_gate != rts->rts_gate
675 ? naddr_ntoa(new->rts_gate) : ""));
676 print_rts(new,
677 -(new->rts_metric == rts->rts_metric),
678 -(new->rts_ifp == rts->rts_ifp),
679 0,
680 rts->rts_tag != new->rts_tag,
681 (new->rts_time != rts->rts_time
682 && (rts != rt->rt_spares
683 || AGE_RT(rt->rt_state, new->rts_ifp))));
684
685 } else {
686 fprintf(ftrace, "Add #%d %-35s ",
687 (int)(rts - rt->rt_spares),
688 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate));
689 print_rts(new, 0,0,0,0,
690 (rts != rt->rt_spares
691 || AGE_RT(rt->rt_state,new->rts_ifp)));
692 }
693 fputc('\n',ftrace);
694 }
695
696
697 /* miscellaneous message checked by the caller
698 */
699 void
700 trace_misc(const char *p, ...)
701 {
702 va_list args;
703
704 if (ftrace == NULL)
705 return;
706
707 lastlog();
708 va_start(args, p);
709 vfprintf(ftrace, p, args);
710 fputc('\n',ftrace);
711 }
712
713
714 /* display a message if tracing actions
715 */
716 void
717 trace_act(const char *p, ...)
718 {
719 va_list args;
720
721 if (!TRACEACTIONS || ftrace == NULL)
722 return;
723
724 lastlog();
725 va_start(args, p);
726 vfprintf(ftrace, p, args);
727 fputc('\n',ftrace);
728 }
729
730
731 /* display a message if tracing packets
732 */
733 void
734 trace_pkt(const char *p, ...)
735 {
736 va_list args;
737
738 if (!TRACEPACKETS || ftrace == NULL)
739 return;
740
741 lastlog();
742 va_start(args, p);
743 vfprintf(ftrace, p, args);
744 fputc('\n',ftrace);
745 }
746
747
748 void
749 trace_change(struct rt_entry *rt,
750 u_int state,
751 struct rt_spare *new,
752 const char *label)
753 {
754 if (ftrace == NULL)
755 return;
756
757 if (rt->rt_metric == new->rts_metric
758 && rt->rt_gate == new->rts_gate
759 && rt->rt_router == new->rts_router
760 && rt->rt_state == state
761 && rt->rt_tag == new->rts_tag
762 && rt->rt_de_ag == new->rts_de_ag)
763 return;
764
765 lastlog();
766 fprintf(ftrace, "%s %-35s ",
767 label, rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate));
768 print_rts(rt->rt_spares,
769 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp));
770 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state);
771
772 fprintf(ftrace, "\n%*s %19s%-16s ",
773 (int)strlen(label), "", "",
774 (rt->rt_gate != new->rts_gate
775 ? naddr_ntoa(new->rts_gate) : ""));
776 print_rts(new,
777 -(new->rts_metric == rt->rt_metric),
778 -(new->rts_ifp == rt->rt_ifp),
779 0,
780 rt->rt_tag != new->rts_tag,
781 (rt->rt_time != new->rts_time
782 && AGE_RT(rt->rt_state,new->rts_ifp)));
783 if (rt->rt_state != state)
784 trace_bits(rs_bits, state, 1);
785 fputc('\n',ftrace);
786 }
787
788
789 void
790 trace_add_del(const char * action, struct rt_entry *rt)
791 {
792 if (ftrace == NULL)
793 return;
794
795 lastlog();
796 fprintf(ftrace, "%s %-35s ",
797 action, rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate));
798 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp));
799 trace_bits(rs_bits, rt->rt_state, 0);
800 fputc('\n',ftrace);
801 }
802
803
804 /* ARGSUSED */
805 static int
806 walk_trace(struct radix_node *rn,
807 struct walkarg *w UNUSED)
808 {
809 #define RT ((struct rt_entry *)rn)
810 struct rt_spare *rts;
811 int i;
812
813 fprintf(ftrace, " %-35s ",
814 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate));
815 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp));
816 trace_bits(rs_bits, RT->rt_state, 0);
817 if (RT->rt_poison_time >= now_garbage
818 && RT->rt_poison_metric < RT->rt_metric)
819 fprintf(ftrace, "pm=%d@%s",
820 RT->rt_poison_metric, ts(RT->rt_poison_time));
821
822 rts = &RT->rt_spares[1];
823 for (i = 1; i < NUM_SPARES; i++, rts++) {
824 if (rts->rts_gate != RIP_DEFAULT) {
825 fprintf(ftrace,"\n #%d%15s%-16s ",
826 i, "", naddr_ntoa(rts->rts_gate));
827 print_rts(rts, 0,0,0,0,1);
828 }
829 }
830 fputc('\n',ftrace);
831
832 return 0;
833 }
834
835
836 static void
837 trace_dump(void)
838 {
839 struct interface *ifp;
840
841 if (ftrace == NULL)
842 return;
843 lastlog();
844
845 fputs("current daemon state:\n", ftrace);
846 for (ifp = ifnet; ifp != NULL; ifp = ifp->int_next)
847 trace_if("", ifp);
848 rn_walktree(rhead, walk_trace, 0);
849 }
850
851
852 void
853 trace_rip(const char *dir1, const char *dir2,
854 struct sockaddr_in *who,
855 struct interface *ifp,
856 struct rip *msg,
857 int size) /* total size of message */
858 {
859 struct netinfo *n, *lim;
860 # define NA ((struct netauth*)n)
861 int i, seen_route;
862
863 if (!TRACEPACKETS || ftrace == NULL)
864 return;
865
866 lastlog();
867 if (msg->rip_cmd >= RIPCMD_MAX
868 || msg->rip_vers == 0) {
869 fprintf(ftrace, "%s bad RIPv%d cmd=%d %s"
870 " %s.%d size=%d\n",
871 dir1, msg->rip_vers, msg->rip_cmd, dir2,
872 naddr_ntoa(who->sin_addr.s_addr),
873 ntohs(who->sin_port),
874 size);
875 return;
876 }
877
878 fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n",
879 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2,
880 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port),
881 ifp ? " via " : "", ifp ? ifp->int_name : "");
882 if (!TRACECONTENTS)
883 return;
884
885 seen_route = 0;
886 switch (msg->rip_cmd) {
887 case RIPCMD_REQUEST:
888 case RIPCMD_RESPONSE:
889 n = msg->rip_nets;
890 lim = (struct netinfo *)((char*)msg + size);
891 for (; n < lim; n++) {
892 if (!seen_route
893 && n->n_family == RIP_AF_UNSPEC
894 && ntohl(n->n_metric) == HOPCNT_INFINITY
895 && msg->rip_cmd == RIPCMD_REQUEST
896 && (n+1 == lim
897 || (n+2 == lim
898 && (n+1)->n_family == RIP_AF_AUTH))) {
899 fputs("\tQUERY ", ftrace);
900 if (n->n_dst != 0)
901 fprintf(ftrace, "%s ",
902 naddr_ntoa(n->n_dst));
903 if (n->n_mask != 0)
904 fprintf(ftrace, "mask=%#x ",
905 (u_int)ntohl(n->n_mask));
906 if (n->n_nhop != 0)
907 fprintf(ftrace, "nhop=%s ",
908 naddr_ntoa(n->n_nhop));
909 if (n->n_tag != 0)
910 fprintf(ftrace, "tag=%#x ",
911 ntohs(n->n_tag));
912 fputc('\n',ftrace);
913 continue;
914 }
915
916 if (n->n_family == RIP_AF_AUTH) {
917 if (NA->a_type == RIP_AUTH_PW
918 && n == msg->rip_nets) {
919 fprintf(ftrace, "\tPassword"
920 " Authentication:"
921 " \"%s\"\n",
922 qstring(NA->au.au_pw,
923 RIP_AUTH_PW_LEN));
924 continue;
925 }
926
927 if (NA->a_type == RIP_AUTH_MD5
928 && n == msg->rip_nets) {
929 fprintf(ftrace,
930 "\tMD5 Auth"
931 " pkt_len=%d KeyID=%u"
932 " auth_len=%d"
933 " seqno=%#x"
934 " rsvd=%#x,%#x\n",
935 ntohs(NA->au.a_md5.md5_pkt_len),
936 NA->au.a_md5.md5_keyid,
937 NA->au.a_md5.md5_auth_len,
938 (int)ntohl(NA->au.a_md5.md5_seqno),
939 (int)ntohs(NA->au.a_md5.rsvd[0]),
940 (int)ntohs(NA->au.a_md5.rsvd[1]));
941 continue;
942 }
943 fprintf(ftrace,
944 "\tAuthentication type %d: ",
945 ntohs(NA->a_type));
946 for (i = 0;
947 i < (int)sizeof(NA->au.au_pw);
948 i++)
949 fprintf(ftrace, "%02x ",
950 NA->au.au_pw[i]);
951 fputc('\n',ftrace);
952 continue;
953 }
954
955 seen_route = 1;
956 if (n->n_family != RIP_AF_INET) {
957 fprintf(ftrace,
958 "\t(af %d) %-18s mask=%#x ",
959 ntohs(n->n_family),
960 naddr_ntoa(n->n_dst),
961 (u_int)ntohl(n->n_mask));
962 } else if (msg->rip_vers == RIPv1) {
963 fprintf(ftrace, "\t%-18s ",
964 addrname(n->n_dst, ntohl(n->n_mask),
965 n->n_mask==0 ? 2 : 1));
966 } else {
967 fprintf(ftrace, "\t%-18s ",
968 addrname(n->n_dst, ntohl(n->n_mask),
969 n->n_mask==0 ? 2 : 0));
970 }
971 fprintf(ftrace, "metric=%-2d ",
972 (u_int)ntohl(n->n_metric));
973 if (n->n_nhop != 0)
974 fprintf(ftrace, " nhop=%s ",
975 naddr_ntoa(n->n_nhop));
976 if (n->n_tag != 0)
977 fprintf(ftrace, "tag=%#x", ntohs(n->n_tag));
978 fputc('\n',ftrace);
979 }
980 if (size != (char *)n - (char *)msg)
981 fprintf(ftrace, "truncated record, len %d\n", size);
982 break;
983
984 case RIPCMD_TRACEON:
985 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4,
986 msg->rip_tracefile);
987 break;
988
989 case RIPCMD_TRACEOFF:
990 break;
991 }
992 }
DragonFly BSD