1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1983, 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 #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
40 int tracelevel, new_tracelevel;
41 FILE *ftrace; /* output trace file */
42 static const char *sigtrace_pat = "%s";
43 static char savetracename[PATH_MAX];
44 char inittracename[PATH_MAX];
45 static int file_trace; /* 1=tracing to file, not stdout */
46
47 static void trace_dump(void);
48 static void tmsg(const char *, ...) PATTRIB(1,2);
49
50
51 /* convert string to printable characters
52 */
53 static char *
qstring(u_char * s,int len)54 qstring(u_char *s, int len)
55 {
56 static char buf[8*20+1];
57 char *p;
58 u_char *s2, c;
59
60
61 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) {
62 c = *s++;
63 if (c == '\0') {
64 for (s2 = s+1; s2 < &s[len]; s2++) {
65 if (*s2 != '\0')
66 break;
67 }
68 if (s2 >= &s[len])
69 goto exit;
70 }
71
72 if (c >= ' ' && c < 0x7f && c != '\\') {
73 *p++ = c;
74 continue;
75 }
76 *p++ = '\\';
77 switch (c) {
78 case '\\':
79 *p++ = '\\';
80 break;
81 case '\n':
82 *p++= 'n';
83 break;
84 case '\r':
85 *p++= 'r';
86 break;
87 case '\t':
88 *p++ = 't';
89 break;
90 case '\b':
91 *p++ = 'b';
92 break;
93 default:
94 p += sprintf(p,"%o",c);
95 break;
96 }
97 }
98 exit:
99 *p = '\0';
100 return buf;
101 }
102
103
104 /* convert IP address to a string, but not into a single buffer
105 */
106 char *
naddr_ntoa(naddr a)107 naddr_ntoa(naddr a)
108 {
109 #define NUM_BUFS 4
110 static int bufno;
111 static struct {
112 char str[16]; /* xxx.xxx.xxx.xxx\0 */
113 } bufs[NUM_BUFS];
114 char *s;
115 struct in_addr addr;
116
117 addr.s_addr = a;
118 s = strcpy(bufs[bufno].str, inet_ntoa(addr));
119 bufno = (bufno+1) % NUM_BUFS;
120 return s;
121 #undef NUM_BUFS
122 }
123
124
125 const char *
saddr_ntoa(struct sockaddr * sa)126 saddr_ntoa(struct sockaddr *sa)
127 {
128 return (sa == NULL) ? "?" : naddr_ntoa(S_ADDR(sa));
129 }
130
131
132 static char *
ts(time_t secs)133 ts(time_t secs) {
134 static char s[20];
135
136 secs += epoch.tv_sec;
137 memcpy(s, ctime(&secs)+11, 8);
138 s[8] = '\0';
139 return s;
140 }
141
142
143 /* On each event, display a time stamp.
144 * This assumes that 'now' is update once for each event, and
145 * that at least now.tv_usec changes.
146 */
147 static struct timeval lastlog_time;
148
149 void
lastlog(void)150 lastlog(void)
151 {
152 if (lastlog_time.tv_sec != now.tv_sec
153 || lastlog_time.tv_usec != now.tv_usec) {
154 (void)fprintf(ftrace, "-- %s --\n", ts(now.tv_sec));
155 lastlog_time = now;
156 }
157 }
158
159
160 static void
tmsg(const char * p,...)161 tmsg(const char *p, ...)
162 {
163 va_list args;
164
165 if (ftrace != NULL) {
166 lastlog();
167 va_start(args, p);
168 vfprintf(ftrace, p, args);
169 va_end(args);
170 (void)fputc('\n',ftrace);
171 fflush(ftrace);
172 }
173 }
174
175
176 void
trace_close(int zap_stdio)177 trace_close(int zap_stdio)
178 {
179 int fd;
180
181
182 fflush(stdout);
183 fflush(stderr);
184
185 if (ftrace != NULL && zap_stdio) {
186 if (ftrace != stdout)
187 fclose(ftrace);
188 ftrace = NULL;
189 fd = open(_PATH_DEVNULL, O_RDWR);
190 if (fd < 0)
191 return;
192 if (isatty(STDIN_FILENO))
193 (void)dup2(fd, STDIN_FILENO);
194 if (isatty(STDOUT_FILENO))
195 (void)dup2(fd, STDOUT_FILENO);
196 if (isatty(STDERR_FILENO))
197 (void)dup2(fd, STDERR_FILENO);
198 (void)close(fd);
199 }
200 lastlog_time.tv_sec = 0;
201 }
202
203
204 void
trace_flush(void)205 trace_flush(void)
206 {
207 if (ftrace != NULL) {
208 fflush(ftrace);
209 if (ferror(ftrace))
210 trace_off("tracing off: %s", strerror(ferror(ftrace)));
211 }
212 }
213
214
215 void
trace_off(const char * p,...)216 trace_off(const char *p, ...)
217 {
218 va_list args;
219
220
221 if (ftrace != NULL) {
222 lastlog();
223 va_start(args, p);
224 vfprintf(ftrace, p, args);
225 va_end(args);
226 (void)fputc('\n',ftrace);
227 }
228 trace_close(file_trace);
229
230 new_tracelevel = tracelevel = 0;
231 }
232
233
234 /* log a change in tracing
235 */
236 void
tracelevel_msg(const char * pat,int dump)237 tracelevel_msg(const char *pat,
238 int dump) /* -1=no dump, 0=default, 1=force */
239 {
240 static const char * const off_msgs[MAX_TRACELEVEL] = {
241 "Tracing actions stopped",
242 "Tracing packets stopped",
243 "Tracing packet contents stopped",
244 "Tracing kernel changes stopped",
245 };
246 static const char * const on_msgs[MAX_TRACELEVEL] = {
247 "Tracing actions started",
248 "Tracing packets started",
249 "Tracing packet contents started",
250 "Tracing kernel changes started",
251 };
252 u_int old_tracelevel = tracelevel;
253
254
255 if (new_tracelevel < 0)
256 new_tracelevel = 0;
257 else if (new_tracelevel > MAX_TRACELEVEL)
258 new_tracelevel = MAX_TRACELEVEL;
259
260 if (new_tracelevel < tracelevel) {
261 if (new_tracelevel <= 0) {
262 trace_off(pat, off_msgs[0]);
263 } else do {
264 tmsg(pat, off_msgs[tracelevel]);
265 }
266 while (--tracelevel != new_tracelevel);
267
268 } else if (new_tracelevel > tracelevel) {
269 do {
270 tmsg(pat, on_msgs[tracelevel++]);
271 } while (tracelevel != new_tracelevel);
272 }
273
274 if (dump > 0
275 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0))
276 trace_dump();
277 }
278
279
280 void
set_tracefile(const char * filename,const char * pat,int dump)281 set_tracefile(const char *filename,
282 const char *pat,
283 int dump) /* -1=no dump, 0=default, 1=force */
284 {
285 struct stat stbuf;
286 FILE *n_ftrace;
287 const char *fn;
288
289
290 /* Allow a null filename to increase the level if the trace file
291 * is already open or if coming from a trusted source, such as
292 * a signal or the command line.
293 */
294 if (filename == NULL || filename[0] == '\0') {
295 filename = NULL;
296 if (ftrace == NULL) {
297 if (inittracename[0] == '\0') {
298 msglog("missing trace file name");
299 return;
300 }
301 fn = inittracename;
302 } else {
303 fn = NULL;
304 }
305
306 } else if (!strcmp(filename,"dump/../table")) {
307 trace_dump();
308 return;
309
310 } else {
311 /* Allow the file specified with "-T file" to be reopened,
312 * but require all other names specified over the net to
313 * match the official path. The path can specify a directory
314 * in which the file is to be created.
315 */
316 if (strcmp(filename, inittracename)
317 #ifdef _PATH_TRACE
318 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1)
319 || strstr(filename,"../")
320 || 0 > stat(_PATH_TRACE, &stbuf))
321 #endif
322 ) {
323 msglog("wrong trace file \"%s\"", filename);
324 return;
325 }
326
327 /* If the new tracefile exists, it must be a regular file.
328 */
329 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) {
330 msglog("wrong type (%#x) of trace file \"%s\"",
331 stbuf.st_mode, filename);
332 return;
333 }
334
335 fn = filename;
336 }
337
338 if (fn != NULL) {
339 n_ftrace = fopen(fn, "a");
340 if (n_ftrace == NULL) {
341 msglog("failed to open trace file \"%s\" %s",
342 fn, strerror(errno));
343 if (fn == inittracename)
344 inittracename[0] = '\0';
345 return;
346 }
347
348 tmsg("switch to trace file %s", fn);
349
350 trace_close(file_trace = 1);
351
352 if (fn != savetracename)
353 strncpy(savetracename, fn, sizeof(savetracename)-1);
354 ftrace = n_ftrace;
355
356 fflush(stdout);
357 fflush(stderr);
358 dup2(fileno(ftrace), STDOUT_FILENO);
359 dup2(fileno(ftrace), STDERR_FILENO);
360 }
361
362 if (new_tracelevel == 0 || filename == NULL)
363 new_tracelevel++;
364 tracelevel_msg(pat, dump != 0 ? dump : (filename != NULL));
365 }
366
367
368 /* ARGSUSED */
369 void
sigtrace_on(int s UNUSED)370 sigtrace_on(int s UNUSED)
371 {
372 new_tracelevel++;
373 sigtrace_pat = "SIGUSR1: %s";
374 }
375
376
377 /* ARGSUSED */
378 void
sigtrace_off(int s UNUSED)379 sigtrace_off(int s UNUSED)
380 {
381 new_tracelevel--;
382 sigtrace_pat = "SIGUSR2: %s";
383 }
384
385
386 /* Set tracing after a signal.
387 */
388 void
set_tracelevel(void)389 set_tracelevel(void)
390 {
391 if (new_tracelevel == tracelevel)
392 return;
393
394 /* If tracing entirely off, and there was no tracefile specified
395 * on the command line, then leave it off.
396 */
397 if (new_tracelevel > tracelevel && ftrace == NULL) {
398 if (savetracename[0] != '\0') {
399 set_tracefile(savetracename,sigtrace_pat,0);
400 } else if (inittracename[0] != '\0') {
401 set_tracefile(inittracename,sigtrace_pat,0);
402 } else {
403 new_tracelevel = 0;
404 return;
405 }
406 } else {
407 tracelevel_msg(sigtrace_pat, 0);
408 }
409 }
410
411
412 /* display an address
413 */
414 char *
addrname(naddr addr,naddr mask,int force)415 addrname(naddr addr, /* in network byte order */
416 naddr mask,
417 int force) /* 0=show mask if nonstandard, */
418 { /* 1=always show mask, 2=never */
419 #define NUM_BUFS 4
420 static int bufno;
421 static struct {
422 char str[15+20];
423 } bufs[NUM_BUFS];
424 char *s, *sp;
425 naddr dmask;
426 size_t l;
427 int i;
428
429 strlcpy(bufs[bufno].str, naddr_ntoa(addr), sizeof(bufs[bufno].str));
430 s = bufs[bufno].str;
431 l = sizeof(bufs[bufno].str);
432 bufno = (bufno+1) % NUM_BUFS;
433
434 if (force == 1 || (force == 0 && mask != std_mask(addr))) {
435 sp = &s[strlen(s)];
436
437 dmask = mask & -mask;
438 if (mask + dmask == 0) {
439 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++)
440 continue;
441 (void)snprintf(sp, s + l - sp, "/%d", 32-i);
442
443 } else {
444 (void)snprintf(sp, s + l - sp, " (mask %#x)",
445 (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 const struct bits if_bits[] = {
463 { IFF_LOOPBACK, 0, "LOOPBACK" },
464 { IFF_POINTOPOINT, 0, "PT-TO-PT" },
465 { 0, 0, 0}
466 };
467
468 static const 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 const 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
trace_bits(const struct bits * tbl,u_int field,int force)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 (void)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 (void)putc(c, ftrace);
546 (void)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 (void)putc(c, ftrace);
557 (void)fprintf(ftrace, tbl->bits_name, field);
558 c = '|';
559 }
560
561 if (c != '<' || force)
562 (void)fputs("> ", ftrace);
563 }
564
565
566 char *
rtname(naddr dst,naddr mask,naddr gate)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 (void)sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate));
577 return buf;
578 }
579
580
581 static void
print_rts(struct rt_spare * rts,int force_metric,int force_ifp,int force_router,int force_tag,int force_time)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 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric);
594 if (force_ifp >= 0)
595 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == NULL ?
596 "if?" : rts->rts_ifp->int_name));
597 if (force_router > 0
598 || (force_router == 0 && rts->rts_router != rts->rts_gate))
599 (void)fprintf(ftrace, "router=%s ",
600 naddr_ntoa(rts->rts_router));
601 if (force_time > 0)
602 (void)fprintf(ftrace, "%s ", ts(rts->rts_time));
603 if (force_tag > 0
604 || (force_tag == 0 && rts->rts_tag != 0))
605 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag));
606 if (rts->rts_de_ag != 0) {
607 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++)
608 continue;
609 (void)fprintf(ftrace, "de_ag=%d ", i);
610 }
611
612 }
613
614
615 void
trace_if(const char * act,struct interface * ifp)616 trace_if(const char *act,
617 struct interface *ifp)
618 {
619 if (!TRACEACTIONS || ftrace == NULL)
620 return;
621
622 lastlog();
623 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name);
624 (void)fprintf(ftrace, "%-15s-->%-15s ",
625 naddr_ntoa(ifp->int_addr),
626 addrname(((ifp->int_if_flags & IFF_POINTOPOINT)
627 ? ifp->int_dstaddr
628 : htonl(ifp->int_net)),
629 ifp->int_mask, 1));
630 if (ifp->int_metric != 0)
631 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric);
632 if (ifp->int_adj_inmetric != 0)
633 (void)fprintf(ftrace, "adj_inmetric=%u ",
634 ifp->int_adj_inmetric);
635 if (ifp->int_adj_outmetric != 0)
636 (void)fprintf(ftrace, "adj_outmetric=%u ",
637 ifp->int_adj_outmetric);
638 if (!IS_RIP_OUT_OFF(ifp->int_state)
639 && ifp->int_d_metric != 0)
640 (void)fprintf(ftrace, "fake_default=%u ", ifp->int_d_metric);
641 trace_bits(if_bits, ifp->int_if_flags, 0);
642 trace_bits(is_bits, ifp->int_state, 0);
643 (void)fputc('\n',ftrace);
644 }
645
646
647 void
trace_upslot(struct rt_entry * rt,struct rt_spare * rts,struct rt_spare * new)648 trace_upslot(struct rt_entry *rt,
649 struct rt_spare *rts,
650 struct rt_spare *new)
651 {
652 if (!TRACEACTIONS || ftrace == NULL)
653 return;
654
655 if (rts->rts_gate == new->rts_gate
656 && rts->rts_router == new->rts_router
657 && rts->rts_metric == new->rts_metric
658 && rts->rts_tag == new->rts_tag
659 && rts->rts_de_ag == new->rts_de_ag)
660 return;
661
662 lastlog();
663 if (new->rts_gate == 0) {
664 (void)fprintf(ftrace, "Del #%d %-35s ",
665 (int)(rts - rt->rt_spares),
666 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate));
667 print_rts(rts, 0,0,0,0,
668 (rts != rt->rt_spares
669 || AGE_RT(rt->rt_state,new->rts_ifp)));
670
671 } else if (rts->rts_gate != RIP_DEFAULT) {
672 (void)fprintf(ftrace, "Chg #%d %-35s ",
673 (int)(rts - rt->rt_spares),
674 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate));
675 print_rts(rts, 0,0,
676 rts->rts_gate != new->rts_gate,
677 rts->rts_tag != new->rts_tag,
678 rts != rt->rt_spares || AGE_RT(rt->rt_state,
679 rt->rt_ifp));
680
681 (void)fprintf(ftrace, "\n %19s%-16s ", "",
682 (new->rts_gate != rts->rts_gate
683 ? naddr_ntoa(new->rts_gate) : ""));
684 print_rts(new,
685 -(new->rts_metric == rts->rts_metric),
686 -(new->rts_ifp == rts->rts_ifp),
687 0,
688 rts->rts_tag != new->rts_tag,
689 (new->rts_time != rts->rts_time
690 && (rts != rt->rt_spares
691 || AGE_RT(rt->rt_state, new->rts_ifp))));
692
693 } else {
694 (void)fprintf(ftrace, "Add #%d %-35s ",
695 (int)(rts - rt->rt_spares),
696 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate));
697 print_rts(new, 0,0,0,0,
698 (rts != rt->rt_spares
699 || AGE_RT(rt->rt_state,new->rts_ifp)));
700 }
701 (void)fputc('\n',ftrace);
702 }
703
704
705 /* miscellaneous message checked by the caller
706 */
707 void
trace_misc(const char * p,...)708 trace_misc(const char *p, ...)
709 {
710 va_list args;
711
712 if (ftrace == NULL)
713 return;
714
715 lastlog();
716 va_start(args, p);
717 vfprintf(ftrace, p, args);
718 va_end(args);
719 (void)fputc('\n',ftrace);
720 }
721
722
723 /* display a message if tracing actions
724 */
725 void
trace_act(const char * p,...)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 va_end(args);
737 (void)fputc('\n',ftrace);
738 }
739
740
741 /* display a message if tracing packets
742 */
743 void
trace_pkt(const char * p,...)744 trace_pkt(const char *p, ...)
745 {
746 va_list args;
747
748 if (!TRACEPACKETS || ftrace == NULL)
749 return;
750
751 lastlog();
752 va_start(args, p);
753 vfprintf(ftrace, p, args);
754 va_end(args);
755 (void)fputc('\n',ftrace);
756 }
757
758
759 void
trace_change(struct rt_entry * rt,u_int state,struct rt_spare * new,const char * label)760 trace_change(struct rt_entry *rt,
761 u_int state,
762 struct rt_spare *new,
763 const char *label)
764 {
765 if (ftrace == NULL)
766 return;
767
768 if (rt->rt_metric == new->rts_metric
769 && rt->rt_gate == new->rts_gate
770 && rt->rt_router == new->rts_router
771 && rt->rt_state == state
772 && rt->rt_tag == new->rts_tag
773 && rt->rt_de_ag == new->rts_de_ag)
774 return;
775
776 lastlog();
777 (void)fprintf(ftrace, "%s %-35s ",
778 label,
779 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate));
780 print_rts(rt->rt_spares,
781 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp));
782 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state);
783
784 (void)fprintf(ftrace, "\n%*s %19s%-16s ",
785 (int)strlen(label), "", "",
786 (rt->rt_gate != new->rts_gate
787 ? naddr_ntoa(new->rts_gate) : ""));
788 print_rts(new,
789 -(new->rts_metric == rt->rt_metric),
790 -(new->rts_ifp == rt->rt_ifp),
791 0,
792 rt->rt_tag != new->rts_tag,
793 (rt->rt_time != new->rts_time
794 && AGE_RT(rt->rt_state,new->rts_ifp)));
795 if (rt->rt_state != state)
796 trace_bits(rs_bits, state, 1);
797 (void)fputc('\n',ftrace);
798 }
799
800
801 void
trace_add_del(const char * action,struct rt_entry * rt)802 trace_add_del(const char * action, struct rt_entry *rt)
803 {
804 if (ftrace == NULL)
805 return;
806
807 lastlog();
808 (void)fprintf(ftrace, "%s %-35s ",
809 action,
810 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate));
811 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp));
812 trace_bits(rs_bits, rt->rt_state, 0);
813 (void)fputc('\n',ftrace);
814 }
815
816
817 /* ARGSUSED */
818 static int
walk_trace(struct radix_node * rn,struct walkarg * w UNUSED)819 walk_trace(struct radix_node *rn,
820 struct walkarg *w UNUSED)
821 {
822 #define RT ((struct rt_entry *)rn)
823 struct rt_spare *rts;
824 int i;
825
826 (void)fprintf(ftrace, " %-35s ",
827 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate));
828 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp));
829 trace_bits(rs_bits, RT->rt_state, 0);
830 if (RT->rt_poison_time >= now_garbage
831 && RT->rt_poison_metric < RT->rt_metric)
832 (void)fprintf(ftrace, "pm=%d@%s",
833 RT->rt_poison_metric, ts(RT->rt_poison_time));
834
835 rts = &RT->rt_spares[1];
836 for (i = 1; i < NUM_SPARES; i++, rts++) {
837 if (rts->rts_gate != RIP_DEFAULT) {
838 (void)fprintf(ftrace,"\n #%d%15s%-16s ",
839 i, "", naddr_ntoa(rts->rts_gate));
840 print_rts(rts, 0,0,0,0,1);
841 }
842 }
843 (void)fputc('\n',ftrace);
844
845 return 0;
846 }
847
848
849 static void
trace_dump(void)850 trace_dump(void)
851 {
852 struct interface *ifp;
853
854 if (ftrace == NULL)
855 return;
856 lastlog();
857
858 (void)fputs("current daemon state:\n", ftrace);
859 LIST_FOREACH(ifp, &ifnet, int_list)
860 trace_if("", ifp);
861 (void)rn_walktree(rhead, walk_trace, 0);
862 }
863
864
865 void
trace_rip(const char * dir1,const char * dir2,struct sockaddr_in * who,struct interface * ifp,struct rip * msg,int size)866 trace_rip(const char *dir1, const char *dir2,
867 struct sockaddr_in *who,
868 struct interface *ifp,
869 struct rip *msg,
870 int size) /* total size of message */
871 {
872 struct netinfo *n, *lim;
873 # define NA ((struct netauth*)n)
874 int i, seen_route;
875
876 if (!TRACEPACKETS || ftrace == NULL)
877 return;
878
879 lastlog();
880 if (msg->rip_cmd >= RIPCMD_MAX
881 || msg->rip_vers == 0) {
882 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s"
883 " %s.%d size=%d\n",
884 dir1, msg->rip_vers, msg->rip_cmd, dir2,
885 naddr_ntoa(who->sin_addr.s_addr),
886 ntohs(who->sin_port),
887 size);
888 return;
889 }
890
891 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n",
892 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2,
893 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port),
894 ifp ? " via " : "", ifp ? ifp->int_name : "");
895 if (!TRACECONTENTS)
896 return;
897
898 seen_route = 0;
899 switch (msg->rip_cmd) {
900 case RIPCMD_REQUEST:
901 case RIPCMD_RESPONSE:
902 n = msg->rip_nets;
903 lim = (struct netinfo *)((char*)msg + size);
904 for (; n < lim; n++) {
905 if (!seen_route
906 && n->n_family == RIP_AF_UNSPEC
907 && ntohl(n->n_metric) == HOPCNT_INFINITY
908 && msg->rip_cmd == RIPCMD_REQUEST
909 && (n+1 == lim
910 || (n+2 == lim
911 && (n+1)->n_family == RIP_AF_AUTH))) {
912 (void)fputs("\tQUERY ", ftrace);
913 if (n->n_dst != 0)
914 (void)fprintf(ftrace, "%s ",
915 naddr_ntoa(n->n_dst));
916 if (n->n_mask != 0)
917 (void)fprintf(ftrace, "mask=%#x ",
918 (u_int)ntohl(n->n_mask));
919 if (n->n_nhop != 0)
920 (void)fprintf(ftrace, "nhop=%s ",
921 naddr_ntoa(n->n_nhop));
922 if (n->n_tag != 0)
923 (void)fprintf(ftrace, "tag=%#x ",
924 ntohs(n->n_tag));
925 (void)fputc('\n',ftrace);
926 continue;
927 }
928
929 if (n->n_family == RIP_AF_AUTH) {
930 if (NA->a_type == RIP_AUTH_PW
931 && n == msg->rip_nets) {
932 (void)fprintf(ftrace, "\tPassword"
933 " Authentication:"
934 " \"%s\"\n",
935 qstring(NA->au.au_pw,
936 RIP_AUTH_PW_LEN));
937 continue;
938 }
939
940 if (NA->a_type == RIP_AUTH_MD5
941 && n == msg->rip_nets) {
942 (void)fprintf(ftrace,
943 "\tMD5 Auth"
944 " pkt_len=%d KeyID=%u"
945 " auth_len=%d"
946 " seqno=%#x"
947 " rsvd=%#x,%#x\n",
948 ntohs(NA->au.a_md5.md5_pkt_len),
949 NA->au.a_md5.md5_keyid,
950 NA->au.a_md5.md5_auth_len,
951 (int)ntohl(NA->au.a_md5.md5_seqno),
952 (int)ntohs(NA->au.a_md5.rsvd[0]),
953 (int)ntohs(NA->au.a_md5.rsvd[1]));
954 continue;
955 }
956 (void)fprintf(ftrace,
957 "\tAuthentication type %d: ",
958 ntohs(NA->a_type));
959 for (i = 0;
960 i < (int)sizeof(NA->au.au_pw);
961 i++)
962 (void)fprintf(ftrace, "%02x ",
963 NA->au.au_pw[i]);
964 (void)fputc('\n',ftrace);
965 continue;
966 }
967
968 seen_route = 1;
969 if (n->n_family != RIP_AF_INET) {
970 (void)fprintf(ftrace,
971 "\t(af %d) %-18s mask=%#x ",
972 ntohs(n->n_family),
973 naddr_ntoa(n->n_dst),
974 (u_int)ntohl(n->n_mask));
975 } else if (msg->rip_vers == RIPv1) {
976 (void)fprintf(ftrace, "\t%-18s ",
977 addrname(n->n_dst,
978 ntohl(n->n_mask),
979 n->n_mask==0 ? 2 : 1));
980 } else {
981 (void)fprintf(ftrace, "\t%-18s ",
982 addrname(n->n_dst,
983 ntohl(n->n_mask),
984 n->n_mask==0 ? 2 : 0));
985 }
986 (void)fprintf(ftrace, "metric=%-2d ",
987 (u_int)ntohl(n->n_metric));
988 if (n->n_nhop != 0)
989 (void)fprintf(ftrace, " nhop=%s ",
990 naddr_ntoa(n->n_nhop));
991 if (n->n_tag != 0)
992 (void)fprintf(ftrace, "tag=%#x",
993 ntohs(n->n_tag));
994 (void)fputc('\n',ftrace);
995 }
996 if (size != (char *)n - (char *)msg)
997 (void)fprintf(ftrace, "truncated record, len %d\n",
998 size);
999 break;
1000
1001 case RIPCMD_TRACEON:
1002 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4,
1003 msg->rip_tracefile);
1004 break;
1005
1006 case RIPCMD_TRACEOFF:
1007 break;
1008 }
1009 }
1010