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kernel - Minor cleanup swtch.s
[dragonfly.git] / sbin / routed / trace.c
blobacc749ceef6874df6a114d36d87a6aa60827d713
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(sgi) && !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 #ifdef sgi
47 /* use *stat64 for files on large filesystems */
48 #define stat stat64
49 #endif
50
51 #define NRECORDS 50 /* size of circular trace buffer */
52
53 int tracelevel, new_tracelevel;
54 FILE *ftrace; /* output trace file */
55 static const char *sigtrace_pat = "%s";
56 static char savetracename[MAXPATHLEN+1];
57 char inittracename[MAXPATHLEN+1];
58 int file_trace; /* 1=tracing to file, not stdout */
59
60 static void trace_dump(void);
61 static void tmsg(const char *, ...) PATTRIB(1,2);
62
63
64 /* convert string to printable characters
65 */
66 static char *
67 qstring(u_char *s, int len)
68 {
69 static char buf[8*20+1];
70 char *p;
71 u_char *s2, c;
72
73
74 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) {
75 c = *s++;
76 if (c == '\0') {
77 for (s2 = s+1; s2 < &s[len]; s2++) {
78 if (*s2 != '\0')
79 break;
80 }
81 if (s2 >= &s[len])
82 goto exit;
83 }
84
85 if (c >= ' ' && c < 0x7f && c != '\\') {
86 *p++ = c;
87 continue;
88 }
89 *p++ = '\\';
90 switch (c) {
91 case '\\':
92 *p++ = '\\';
93 break;
94 case '\n':
95 *p++= 'n';
96 break;
97 case '\r':
98 *p++= 'r';
99 break;
100 case '\t':
101 *p++ = 't';
102 break;
103 case '\b':
104 *p++ = 'b';
105 break;
106 default:
107 p += sprintf(p,"%o",c);
108 break;
109 }
110 }
111 exit:
112 *p = '\0';
113 return buf;
114 }
115
116
117 /* convert IP address to a string, but not into a single buffer
118 */
119 char *
120 naddr_ntoa(naddr a)
121 {
122 #define NUM_BUFS 4
123 static int bufno;
124 static struct {
125 char str[16]; /* xxx.xxx.xxx.xxx\0 */
126 } bufs[NUM_BUFS];
127 char *s;
128 struct in_addr addr;
129
130 addr.s_addr = a;
131 s = strcpy(bufs[bufno].str, inet_ntoa(addr));
132 bufno = (bufno+1) % NUM_BUFS;
133 return s;
134 #undef NUM_BUFS
135 }
136
137
138 const char *
139 saddr_ntoa(struct sockaddr *sa)
140 {
141 return (sa == NULL) ? "?" : naddr_ntoa(S_ADDR(sa));
142 }
143
144
145 static char *
146 ts(time_t secs) {
147 static char s[20];
148
149 secs += epoch.tv_sec;
150 #ifdef sgi
151 cftime(s, "%T", &secs);
152 #else
153 memcpy(s, ctime(&secs)+11, 8);
154 s[8] = '\0';
155 #endif
156 return s;
157 }
158
159
160 /* On each event, display a time stamp.
161 * This assumes that 'now' is update once for each event, and
162 * that at least now.tv_usec changes.
163 */
164 static struct timeval lastlog_time;
165
166 void
167 lastlog(void)
168 {
169 if (lastlog_time.tv_sec != now.tv_sec
170 || lastlog_time.tv_usec != now.tv_usec) {
171 fprintf(ftrace, "-- %s --\n", ts(now.tv_sec));
172 lastlog_time = now;
173 }
174 }
175
176
177 static void
178 tmsg(const char *p, ...)
179 {
180 va_list args;
181
182 if (ftrace != NULL) {
183 lastlog();
184 va_start(args, p);
185 vfprintf(ftrace, p, args);
186 fputc('\n',ftrace);
187 fflush(ftrace);
188 }
189 }
190
191
192 void
193 trace_close(int zap_stdio)
194 {
195 int fd;
196
197
198 fflush(stdout);
199 fflush(stderr);
200
201 if (ftrace != NULL && zap_stdio) {
202 if (ftrace != stdout)
203 fclose(ftrace);
204 ftrace = NULL;
205 fd = open(_PATH_DEVNULL, O_RDWR);
206 if (isatty(STDIN_FILENO))
207 dup2(fd, STDIN_FILENO);
208 if (isatty(STDOUT_FILENO))
209 dup2(fd, STDOUT_FILENO);
210 if (isatty(STDERR_FILENO))
211 dup2(fd, STDERR_FILENO);
212 close(fd);
213 }
214 lastlog_time.tv_sec = 0;
215 }
216
217
218 void
219 trace_flush(void)
220 {
221 if (ftrace != NULL) {
222 fflush(ftrace);
223 if (ferror(ftrace))
224 trace_off("tracing off: %s", strerror(ferror(ftrace)));
225 }
226 }
227
228
229 void
230 trace_off(const char *p, ...)
231 {
232 va_list args;
233
234
235 if (ftrace != NULL) {
236 lastlog();
237 va_start(args, p);
238 vfprintf(ftrace, p, args);
239 fputc('\n',ftrace);
240 }
241 trace_close(file_trace);
242
243 new_tracelevel = tracelevel = 0;
244 }
245
246
247 /* log a change in tracing
248 */
249 void
250 tracelevel_msg(const char *pat,
251 int dump) /* -1=no dump, 0=default, 1=force */
252 {
253 static const char *off_msgs[MAX_TRACELEVEL] = {
254 "Tracing actions stopped",
255 "Tracing packets stopped",
256 "Tracing packet contents stopped",
257 "Tracing kernel changes stopped",
258 };
259 static const char *on_msgs[MAX_TRACELEVEL] = {
260 "Tracing actions started",
261 "Tracing packets started",
262 "Tracing packet contents started",
263 "Tracing kernel changes started",
264 };
265 u_int old_tracelevel = tracelevel;
266
267
268 if (new_tracelevel < 0)
269 new_tracelevel = 0;
270 else if (new_tracelevel > MAX_TRACELEVEL)
271 new_tracelevel = MAX_TRACELEVEL;
272
273 if (new_tracelevel < tracelevel) {
274 if (new_tracelevel <= 0) {
275 trace_off(pat, off_msgs[0]);
276 } else do {
277 tmsg(pat, off_msgs[tracelevel]);
278 }
279 while (--tracelevel != new_tracelevel);
280
281 } else if (new_tracelevel > tracelevel) {
282 do {
283 tmsg(pat, on_msgs[tracelevel++]);
284 } while (tracelevel != new_tracelevel);
285 }
286
287 if (dump > 0
288 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0))
289 trace_dump();
290 }
291
292
293 void
294 set_tracefile(const char *filename,
295 const char *pat,
296 int dump) /* -1=no dump, 0=default, 1=force */
297 {
298 struct stat stbuf;
299 FILE *n_ftrace;
300 const char *fn;
301
302
303 /* Allow a null filename to increase the level if the trace file
304 * is already open or if coming from a trusted source, such as
305 * a signal or the command line.
306 */
307 if (filename == NULL || filename[0] == '\0') {
308 filename = NULL;
309 if (ftrace == NULL) {
310 if (inittracename[0] == '\0') {
311 msglog("missing trace file name");
312 return;
313 }
314 fn = inittracename;
315 } else {
316 fn = NULL;
317 }
318
319 } else if (!strcmp(filename,"dump/../table")) {
320 trace_dump();
321 return;
322
323 } else {
324 /* Allow the file specified with "-T file" to be reopened,
325 * but require all other names specified over the net to
326 * match the official path. The path can specify a directory
327 * in which the file is to be created.
328 */
329 if (strcmp(filename, inittracename)
330 #ifdef _PATH_TRACE
331 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1)
332 || strstr(filename,"../")
333 || 0 > stat(_PATH_TRACE, &stbuf))
334 #endif
335 ) {
336 msglog("wrong trace file \"%s\"", filename);
337 return;
338 }
339
340 /* If the new tracefile exists, it must be a regular file.
341 */
342 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) {
343 msglog("wrong type (%#x) of trace file \"%s\"",
344 stbuf.st_mode, filename);
345 return;
346 }
347
348 fn = filename;
349 }
350
351 if (fn != NULL) {
352 n_ftrace = fopen(fn, "a");
353 if (n_ftrace == NULL) {
354 msglog("failed to open trace file \"%s\" %s",
355 fn, strerror(errno));
356 if (fn == inittracename)
357 inittracename[0] = '\0';
358 return;
359 }
360
361 tmsg("switch to trace file %s", fn);
362
363 trace_close(file_trace = 1);
364
365 if (fn != savetracename)
366 strncpy(savetracename, fn, sizeof(savetracename)-1);
367 ftrace = n_ftrace;
368
369 fflush(stdout);
370 fflush(stderr);
371 dup2(fileno(ftrace), STDOUT_FILENO);
372 dup2(fileno(ftrace), STDERR_FILENO);
373 }
374
375 if (new_tracelevel == 0 || filename == NULL)
376 new_tracelevel++;
377 tracelevel_msg(pat, dump != 0 ? dump : (filename != NULL));
378 }
379
380
381 /* ARGSUSED */
382 void
383 sigtrace_on(int s UNUSED)
384 {
385 new_tracelevel++;
386 sigtrace_pat = "SIGUSR1: %s";
387 }
388
389
390 /* ARGSUSED */
391 void
392 sigtrace_off(int s UNUSED)
393 {
394 new_tracelevel--;
395 sigtrace_pat = "SIGUSR2: %s";
396 }
397
398
399 /* Set tracing after a signal.
400 */
401 void
402 set_tracelevel(void)
403 {
404 if (new_tracelevel == tracelevel)
405 return;
406
407 /* If tracing entirely off, and there was no tracefile specified
408 * on the command line, then leave it off.
409 */
410 if (new_tracelevel > tracelevel && ftrace == NULL) {
411 if (savetracename[0] != '\0') {
412 set_tracefile(savetracename,sigtrace_pat,0);
413 } else if (inittracename[0] != '\0') {
414 set_tracefile(inittracename,sigtrace_pat,0);
415 } else {
416 new_tracelevel = 0;
417 return;
418 }
419 } else {
420 tracelevel_msg(sigtrace_pat, 0);
421 }
422 }
423
424
425 /* display an address
426 */
427 char *
428 addrname(naddr addr, /* in network byte order */
429 naddr mask,
430 int force) /* 0=show mask if nonstandard, */
431 { /* 1=always show mask, 2=never */
432 #define NUM_BUFS 4
433 static int bufno;
434 static struct {
435 char str[15+20];
436 } bufs[NUM_BUFS];
437 char *s, *sp;
438 naddr dmask;
439 int i;
440
441 s = strcpy(bufs[bufno].str, naddr_ntoa(addr));
442 bufno = (bufno+1) % NUM_BUFS;
443
444 if (force == 1 || (force == 0 && mask != std_mask(addr))) {
445 sp = &s[strlen(s)];
446
447 dmask = mask & -mask;
448 if (mask + dmask == 0) {
449 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++)
450 continue;
451 sprintf(sp, "/%d", 32-i);
452
453 } else {
454 sprintf(sp, " (mask %#x)", (u_int)mask);
455 }
456 }
457
458 return s;
459 #undef NUM_BUFS
460 }
461
462
463 /* display a bit-field
464 */
465 struct bits {
466 u_int bits_mask;
467 u_int bits_clear;
468 const char *bits_name;
469 };
470
471 static struct bits if_bits[] = {
472 { IFF_LOOPBACK, 0, "LOOPBACK" },
473 { IFF_POINTOPOINT, 0, "PT-TO-PT" },
474 { 0, 0, 0}
475 };
476
477 static struct bits is_bits[] = {
478 { IS_ALIAS, 0, "ALIAS" },
479 { IS_SUBNET, 0, "" },
480 { IS_REMOTE, (IS_NO_RDISC
481 | IS_BCAST_RDISC), "REMOTE" },
482 { IS_PASSIVE, (IS_NO_RDISC
483 | IS_NO_RIP
484 | IS_NO_SUPER_AG
485 | IS_PM_RDISC
486 | IS_NO_AG), "PASSIVE" },
487 { IS_EXTERNAL, 0, "EXTERNAL" },
488 { IS_CHECKED, 0, "" },
489 { IS_ALL_HOSTS, 0, "" },
490 { IS_ALL_ROUTERS, 0, "" },
491 { IS_DISTRUST, 0, "DISTRUST" },
492 { IS_BROKE, IS_SICK, "BROKEN" },
493 { IS_SICK, 0, "SICK" },
494 { IS_DUP, 0, "DUPLICATE" },
495 { IS_REDIRECT_OK, 0, "REDIRECT_OK" },
496 { IS_NEED_NET_SYN, 0, "" },
497 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" },
498 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" },
499 { (IS_NO_RIPV1_IN
500 | IS_NO_RIPV2_IN
501 | IS_NO_RIPV1_OUT
502 | IS_NO_RIPV2_OUT), 0, "NO_RIP" },
503 { (IS_NO_RIPV1_IN
504 | IS_NO_RIPV1_OUT), 0, "RIPV2" },
505 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" },
506 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" },
507 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" },
508 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" },
509 { (IS_NO_ADV_IN
510 | IS_NO_SOL_OUT
511 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" },
512 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" },
513 { IS_SOL_OUT, 0, "SEND_SOLICIT" },
514 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" },
515 { IS_ADV_OUT, 0, "RDISC_ADV" },
516 { IS_BCAST_RDISC, 0, "BCAST_RDISC" },
517 { IS_PM_RDISC, 0, "" },
518 { 0, 0, "%#x"}
519 };
520
521 static struct bits rs_bits[] = {
522 { RS_IF, 0, "IF" },
523 { RS_NET_INT, RS_NET_SYN, "NET_INT" },
524 { RS_NET_SYN, 0, "NET_SYN" },
525 { RS_SUBNET, 0, "" },
526 { RS_LOCAL, 0, "LOCAL" },
527 { RS_MHOME, 0, "MHOME" },
528 { RS_STATIC, 0, "STATIC" },
529 { RS_RDISC, 0, "RDISC" },
530 { 0, 0, "%#x"}
531 };
532
533
534 static void
535 trace_bits(const struct bits *tbl,
536 u_int field,
537 int force)
538 {
539 u_int b;
540 char c;
541
542 if (force) {
543 putc('<', ftrace);
544 c = 0;
545 } else {
546 c = '<';
547 }
548
549 while (field != 0
550 && (b = tbl->bits_mask) != 0) {
551 if ((b & field) == b) {
552 if (tbl->bits_name[0] != '\0') {
553 if (c)
554 putc(c, ftrace);
555 fprintf(ftrace, "%s", tbl->bits_name);
556 c = '|';
557 }
558 if (0 == (field &= ~(b | tbl->bits_clear)))
559 break;
560 }
561 tbl++;
562 }
563 if (field != 0 && tbl->bits_name != NULL) {
564 if (c)
565 putc(c, ftrace);
566 fprintf(ftrace, tbl->bits_name, field);
567 c = '|';
568 }
569
570 if (c != '<' || force)
571 fputs("> ", ftrace);
572 }
573
574
575 char *
576 rtname(naddr dst,
577 naddr mask,
578 naddr gate)
579 {
580 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */
581 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */
582 int i;
583
584 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0));
585 sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate));
586 return buf;
587 }
588
589
590 static void
591 print_rts(struct rt_spare *rts,
592 int force_metric, /* -1=suppress, 0=default */
593 int force_ifp, /* -1=suppress, 0=default */
594 int force_router, /* -1=suppress, 0=default, 1=display */
595 int force_tag, /* -1=suppress, 0=default, 1=display */
596 int force_time) /* 0=suppress, 1=display */
597 {
598 int i;
599
600
601 if (force_metric >= 0)
602 fprintf(ftrace, "metric=%-2d ", rts->rts_metric);
603 if (force_ifp >= 0)
604 fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ?
605 "if?" : rts->rts_ifp->int_name));
606 if (force_router > 0
607 || (force_router == 0 && rts->rts_router != rts->rts_gate))
608 fprintf(ftrace, "router=%s ", naddr_ntoa(rts->rts_router));
609 if (force_time > 0)
610 fprintf(ftrace, "%s ", ts(rts->rts_time));
611 if (force_tag > 0
612 || (force_tag == 0 && rts->rts_tag != 0))
613 fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag));
614 if (rts->rts_de_ag != 0) {
615 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++)
616 continue;
617 fprintf(ftrace, "de_ag=%d ", i);
618 }
619
620 }
621
622
623 void
624 trace_if(const char *act,
625 struct interface *ifp)
626 {
627 if (!TRACEACTIONS || ftrace == NULL)
628 return;
629
630 lastlog();
631 fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name);
632 fprintf(ftrace, "%-15s-->%-15s ",
633 naddr_ntoa(ifp->int_addr),
634 addrname(((ifp->int_if_flags & IFF_POINTOPOINT)
635 ? ifp->int_dstaddr : htonl(ifp->int_net)),
636 ifp->int_mask, 1));
637 if (ifp->int_metric != 0)
638 fprintf(ftrace, "metric=%d ", ifp->int_metric);
639 if (!IS_RIP_OUT_OFF(ifp->int_state)
640 && ifp->int_d_metric != 0)
641 fprintf(ftrace, "fake_default=%d ", ifp->int_d_metric);
642 trace_bits(if_bits, ifp->int_if_flags, 0);
643 trace_bits(is_bits, ifp->int_state, 0);
644 fputc('\n',ftrace);
645 }
646
647
648 void
649 trace_upslot(struct rt_entry *rt,
650 struct rt_spare *rts,
651 struct rt_spare *new)
652 {
653 if (!TRACEACTIONS || ftrace == NULL)
654 return;
655
656 if (rts->rts_gate == new->rts_gate
657 && rts->rts_router == new->rts_router
658 && rts->rts_metric == new->rts_metric
659 && rts->rts_tag == new->rts_tag
660 && rts->rts_de_ag == new->rts_de_ag)
661 return;
662
663 lastlog();
664 if (new->rts_gate == 0) {
665 fprintf(ftrace, "Del #%d %-35s ",
666 (int)(rts - rt->rt_spares),
667 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate));
668 print_rts(rts, 0,0,0,0,
669 (rts != rt->rt_spares
670 || AGE_RT(rt->rt_state,new->rts_ifp)));
671
672 } else if (rts->rts_gate != RIP_DEFAULT) {
673 fprintf(ftrace, "Chg #%d %-35s ",
674 (int)(rts - rt->rt_spares),
675 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate));
676 print_rts(rts, 0,0,
677 rts->rts_gate != new->rts_gate,
678 rts->rts_tag != new->rts_tag,
679 rts != rt->rt_spares || AGE_RT(rt->rt_state,
680 rt->rt_ifp));
681
682 fprintf(ftrace, "\n %19s%-16s ", "",
683 (new->rts_gate != rts->rts_gate
684 ? naddr_ntoa(new->rts_gate) : ""));
685 print_rts(new,
686 -(new->rts_metric == rts->rts_metric),
687 -(new->rts_ifp == rts->rts_ifp),
688 0,
689 rts->rts_tag != new->rts_tag,
690 (new->rts_time != rts->rts_time
691 && (rts != rt->rt_spares
692 || AGE_RT(rt->rt_state, new->rts_ifp))));
693
694 } else {
695 fprintf(ftrace, "Add #%d %-35s ",
696 (int)(rts - rt->rt_spares),
697 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate));
698 print_rts(new, 0,0,0,0,
699 (rts != rt->rt_spares
700 || AGE_RT(rt->rt_state,new->rts_ifp)));
701 }
702 fputc('\n',ftrace);
703 }
704
705
706 /* miscellaneous message checked by the caller
707 */
708 void
709 trace_misc(const char *p, ...)
710 {
711 va_list args;
712
713 if (ftrace == NULL)
714 return;
715
716 lastlog();
717 va_start(args, p);
718 vfprintf(ftrace, p, args);
719 fputc('\n',ftrace);
720 }
721
722
723 /* display a message if tracing actions
724 */
725 void
726 trace_act(const char *p, ...)
727 {
728 va_list args;
729
730 if (!TRACEACTIONS || ftrace == NULL)
731 return;
732
733 lastlog();
734 va_start(args, p);
735 vfprintf(ftrace, p, args);
736 fputc('\n',ftrace);
737 }
738
739
740 /* display a message if tracing packets
741 */
742 void
743 trace_pkt(const char *p, ...)
744 {
745 va_list args;
746
747 if (!TRACEPACKETS || ftrace == NULL)
748 return;
749
750 lastlog();
751 va_start(args, p);
752 vfprintf(ftrace, p, args);
753 fputc('\n',ftrace);
754 }
755
756
757 void
758 trace_change(struct rt_entry *rt,
759 u_int state,
760 struct rt_spare *new,
761 const char *label)
762 {
763 if (ftrace == NULL)
764 return;
765
766 if (rt->rt_metric == new->rts_metric
767 && rt->rt_gate == new->rts_gate
768 && rt->rt_router == new->rts_router
769 && rt->rt_state == state
770 && rt->rt_tag == new->rts_tag
771 && rt->rt_de_ag == new->rts_de_ag)
772 return;
773
774 lastlog();
775 fprintf(ftrace, "%s %-35s ",
776 label, rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate));
777 print_rts(rt->rt_spares,
778 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp));
779 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state);
780
781 fprintf(ftrace, "\n%*s %19s%-16s ",
782 (int)strlen(label), "", "",
783 (rt->rt_gate != new->rts_gate
784 ? naddr_ntoa(new->rts_gate) : ""));
785 print_rts(new,
786 -(new->rts_metric == rt->rt_metric),
787 -(new->rts_ifp == rt->rt_ifp),
788 0,
789 rt->rt_tag != new->rts_tag,
790 (rt->rt_time != new->rts_time
791 && AGE_RT(rt->rt_state,new->rts_ifp)));
792 if (rt->rt_state != state)
793 trace_bits(rs_bits, state, 1);
794 fputc('\n',ftrace);
795 }
796
797
798 void
799 trace_add_del(const char * action, struct rt_entry *rt)
800 {
801 if (ftrace == NULL)
802 return;
803
804 lastlog();
805 fprintf(ftrace, "%s %-35s ",
806 action, rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate));
807 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp));
808 trace_bits(rs_bits, rt->rt_state, 0);
809 fputc('\n',ftrace);
810 }
811
812
813 /* ARGSUSED */
814 static int
815 walk_trace(struct radix_node *rn,
816 struct walkarg *w UNUSED)
817 {
818 #define RT ((struct rt_entry *)rn)
819 struct rt_spare *rts;
820 int i;
821
822 fprintf(ftrace, " %-35s ",
823 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate));
824 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp));
825 trace_bits(rs_bits, RT->rt_state, 0);
826 if (RT->rt_poison_time >= now_garbage
827 && RT->rt_poison_metric < RT->rt_metric)
828 fprintf(ftrace, "pm=%d@%s",
829 RT->rt_poison_metric, ts(RT->rt_poison_time));
830
831 rts = &RT->rt_spares[1];
832 for (i = 1; i < NUM_SPARES; i++, rts++) {
833 if (rts->rts_gate != RIP_DEFAULT) {
834 fprintf(ftrace,"\n #%d%15s%-16s ",
835 i, "", naddr_ntoa(rts->rts_gate));
836 print_rts(rts, 0,0,0,0,1);
837 }
838 }
839 fputc('\n',ftrace);
840
841 return 0;
842 }
843
844
845 static void
846 trace_dump(void)
847 {
848 struct interface *ifp;
849
850 if (ftrace == NULL)
851 return;
852 lastlog();
853
854 fputs("current daemon state:\n", ftrace);
855 for (ifp = ifnet; ifp != NULL; ifp = ifp->int_next)
856 trace_if("", ifp);
857 rn_walktree(rhead, walk_trace, 0);
858 }
859
860
861 void
862 trace_rip(const char *dir1, const char *dir2,
863 struct sockaddr_in *who,
864 struct interface *ifp,
865 struct rip *msg,
866 int size) /* total size of message */
867 {
868 struct netinfo *n, *lim;
869 # define NA ((struct netauth*)n)
870 int i, seen_route;
871
872 if (!TRACEPACKETS || ftrace == NULL)
873 return;
874
875 lastlog();
876 if (msg->rip_cmd >= RIPCMD_MAX
877 || msg->rip_vers == 0) {
878 fprintf(ftrace, "%s bad RIPv%d cmd=%d %s"
879 " %s.%d size=%d\n",
880 dir1, msg->rip_vers, msg->rip_cmd, dir2,
881 naddr_ntoa(who->sin_addr.s_addr),
882 ntohs(who->sin_port),
883 size);
884 return;
885 }
886
887 fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n",
888 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2,
889 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port),
890 ifp ? " via " : "", ifp ? ifp->int_name : "");
891 if (!TRACECONTENTS)
892 return;
893
894 seen_route = 0;
895 switch (msg->rip_cmd) {
896 case RIPCMD_REQUEST:
897 case RIPCMD_RESPONSE:
898 n = msg->rip_nets;
899 lim = (struct netinfo *)((char*)msg + size);
900 for (; n < lim; n++) {
901 if (!seen_route
902 && n->n_family == RIP_AF_UNSPEC
903 && ntohl(n->n_metric) == HOPCNT_INFINITY
904 && msg->rip_cmd == RIPCMD_REQUEST
905 && (n+1 == lim
906 || (n+2 == lim
907 && (n+1)->n_family == RIP_AF_AUTH))) {
908 fputs("\tQUERY ", ftrace);
909 if (n->n_dst != 0)
910 fprintf(ftrace, "%s ",
911 naddr_ntoa(n->n_dst));
912 if (n->n_mask != 0)
913 fprintf(ftrace, "mask=%#x ",
914 (u_int)ntohl(n->n_mask));
915 if (n->n_nhop != 0)
916 fprintf(ftrace, "nhop=%s ",
917 naddr_ntoa(n->n_nhop));
918 if (n->n_tag != 0)
919 fprintf(ftrace, "tag=%#x ",
920 ntohs(n->n_tag));
921 fputc('\n',ftrace);
922 continue;
923 }
924
925 if (n->n_family == RIP_AF_AUTH) {
926 if (NA->a_type == RIP_AUTH_PW
927 && n == msg->rip_nets) {
928 fprintf(ftrace, "\tPassword"
929 " Authentication:"
930 " \"%s\"\n",
931 qstring(NA->au.au_pw,
932 RIP_AUTH_PW_LEN));
933 continue;
934 }
935
936 if (NA->a_type == RIP_AUTH_MD5
937 && n == msg->rip_nets) {
938 fprintf(ftrace,
939 "\tMD5 Auth"
940 " pkt_len=%d KeyID=%u"
941 " auth_len=%d"
942 " seqno=%#x"
943 " rsvd=%#x,%#x\n",
944 ntohs(NA->au.a_md5.md5_pkt_len),
945 NA->au.a_md5.md5_keyid,
946 NA->au.a_md5.md5_auth_len,
947 (int)ntohl(NA->au.a_md5.md5_seqno),
948 (int)ntohs(NA->au.a_md5.rsvd[0]),
949 (int)ntohs(NA->au.a_md5.rsvd[1]));
950 continue;
951 }
952 fprintf(ftrace,
953 "\tAuthentication type %d: ",
954 ntohs(NA->a_type));
955 for (i = 0;
956 i < (int)sizeof(NA->au.au_pw);
957 i++)
958 fprintf(ftrace, "%02x ",
959 NA->au.au_pw[i]);
960 fputc('\n',ftrace);
961 continue;
962 }
963
964 seen_route = 1;
965 if (n->n_family != RIP_AF_INET) {
966 fprintf(ftrace,
967 "\t(af %d) %-18s mask=%#x ",
968 ntohs(n->n_family),
969 naddr_ntoa(n->n_dst),
970 (u_int)ntohl(n->n_mask));
971 } else if (msg->rip_vers == RIPv1) {
972 fprintf(ftrace, "\t%-18s ",
973 addrname(n->n_dst, ntohl(n->n_mask),
974 n->n_mask==0 ? 2 : 1));
975 } else {
976 fprintf(ftrace, "\t%-18s ",
977 addrname(n->n_dst, ntohl(n->n_mask),
978 n->n_mask==0 ? 2 : 0));
979 }
980 fprintf(ftrace, "metric=%-2d ",
981 (u_int)ntohl(n->n_metric));
982 if (n->n_nhop != 0)
983 fprintf(ftrace, " nhop=%s ",
984 naddr_ntoa(n->n_nhop));
985 if (n->n_tag != 0)
986 fprintf(ftrace, "tag=%#x", ntohs(n->n_tag));
987 fputc('\n',ftrace);
988 }
989 if (size != (char *)n - (char *)msg)
990 fprintf(ftrace, "truncated record, len %d\n", size);
991 break;
992
993 case RIPCMD_TRACEON:
994 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4,
995 msg->rip_tracefile);
996 break;
997
998 case RIPCMD_TRACEOFF:
999 break;
1000 }
1001 }
DragonFly BSD