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 * $FreeBSD$
32 */
33
34 #define RIPCMDS
35 #include "defs.h"
36 #include "pathnames.h"
37 #include <sys/stat.h>
38 #include <sys/signal.h>
39 #include <fcntl.h>
40
41 __RCSID("$FreeBSD$");
42
43
44
45 int tracelevel, new_tracelevel;
46 FILE *ftrace; /* output trace file */
47 static const char *sigtrace_pat = "%s";
48 static char savetracename[PATH_MAX];
49 char inittracename[PATH_MAX];
50 static int file_trace; /* 1=tracing to file, not stdout */
51
52 static void trace_dump(void);
53 static void tmsg(const char *, ...) PATTRIB(1,2);
54
55
56 /* convert string to printable characters
57 */
58 static char *
qstring(u_char * s,int len)59 qstring(u_char *s, int len)
60 {
61 static char buf[8*20+1];
62 char *p;
63 u_char *s2, c;
64
65
66 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) {
67 c = *s++;
68 if (c == '\0') {
69 for (s2 = s+1; s2 < &s[len]; s2++) {
70 if (*s2 != '\0')
71 break;
72 }
73 if (s2 >= &s[len])
74 goto exit;
75 }
76
77 if (c >= ' ' && c < 0x7f && c != '\\') {
78 *p++ = c;
79 continue;
80 }
81 *p++ = '\\';
82 switch (c) {
83 case '\\':
84 *p++ = '\\';
85 break;
86 case '\n':
87 *p++= 'n';
88 break;
89 case '\r':
90 *p++= 'r';
91 break;
92 case '\t':
93 *p++ = 't';
94 break;
95 case '\b':
96 *p++ = 'b';
97 break;
98 default:
99 p += sprintf(p,"%o",c);
100 break;
101 }
102 }
103 exit:
104 *p = '\0';
105 return buf;
106 }
107
108
109 /* convert IP address to a string, but not into a single buffer
110 */
111 char *
naddr_ntoa(naddr a)112 naddr_ntoa(naddr a)
113 {
114 #define NUM_BUFS 4
115 static int bufno;
116 static struct {
117 char str[16]; /* xxx.xxx.xxx.xxx\0 */
118 } bufs[NUM_BUFS];
119 char *s;
120 struct in_addr addr;
121
122 addr.s_addr = a;
123 s = strcpy(bufs[bufno].str, inet_ntoa(addr));
124 bufno = (bufno+1) % NUM_BUFS;
125 return s;
126 #undef NUM_BUFS
127 }
128
129
130 const char *
saddr_ntoa(struct sockaddr * sa)131 saddr_ntoa(struct sockaddr *sa)
132 {
133 return (sa == NULL) ? "?" : naddr_ntoa(S_ADDR(sa));
134 }
135
136
137 static char *
ts(time_t secs)138 ts(time_t secs) {
139 static char s[20];
140
141 secs += epoch.tv_sec;
142 memcpy(s, ctime(&secs)+11, 8);
143 s[8] = '\0';
144 return s;
145 }
146
147
148 /* On each event, display a time stamp.
149 * This assumes that 'now' is update once for each event, and
150 * that at least now.tv_usec changes.
151 */
152 static struct timeval lastlog_time;
153
154 void
lastlog(void)155 lastlog(void)
156 {
157 if (lastlog_time.tv_sec != now.tv_sec
158 || lastlog_time.tv_usec != now.tv_usec) {
159 (void)fprintf(ftrace, "-- %s --\n", ts(now.tv_sec));
160 lastlog_time = now;
161 }
162 }
163
164
165 static void
tmsg(const char * p,...)166 tmsg(const char *p, ...)
167 {
168 va_list args;
169
170 if (ftrace != NULL) {
171 lastlog();
172 va_start(args, p);
173 vfprintf(ftrace, p, args);
174 va_end(args);
175 (void)fputc('\n',ftrace);
176 fflush(ftrace);
177 }
178 }
179
180
181 void
trace_close(int zap_stdio)182 trace_close(int zap_stdio)
183 {
184 int fd;
185
186
187 fflush(stdout);
188 fflush(stderr);
189
190 if (ftrace != NULL && zap_stdio) {
191 if (ftrace != stdout)
192 fclose(ftrace);
193 ftrace = NULL;
194 fd = open(_PATH_DEVNULL, O_RDWR);
195 if (fd < 0)
196 return;
197 if (isatty(STDIN_FILENO))
198 (void)dup2(fd, STDIN_FILENO);
199 if (isatty(STDOUT_FILENO))
200 (void)dup2(fd, STDOUT_FILENO);
201 if (isatty(STDERR_FILENO))
202 (void)dup2(fd, STDERR_FILENO);
203 (void)close(fd);
204 }
205 lastlog_time.tv_sec = 0;
206 }
207
208
209 void
trace_flush(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
trace_off(const char * p,...)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 va_end(args);
231 (void)fputc('\n',ftrace);
232 }
233 trace_close(file_trace);
234
235 new_tracelevel = tracelevel = 0;
236 }
237
238
239 /* log a change in tracing
240 */
241 void
tracelevel_msg(const char * pat,int dump)242 tracelevel_msg(const char *pat,
243 int dump) /* -1=no dump, 0=default, 1=force */
244 {
245 static const char * const off_msgs[MAX_TRACELEVEL] = {
246 "Tracing actions stopped",
247 "Tracing packets stopped",
248 "Tracing packet contents stopped",
249 "Tracing kernel changes stopped",
250 };
251 static const char * const on_msgs[MAX_TRACELEVEL] = {
252 "Tracing actions started",
253 "Tracing packets started",
254 "Tracing packet contents started",
255 "Tracing kernel changes started",
256 };
257 u_int old_tracelevel = tracelevel;
258
259
260 if (new_tracelevel < 0)
261 new_tracelevel = 0;
262 else if (new_tracelevel > MAX_TRACELEVEL)
263 new_tracelevel = MAX_TRACELEVEL;
264
265 if (new_tracelevel < tracelevel) {
266 if (new_tracelevel <= 0) {
267 trace_off(pat, off_msgs[0]);
268 } else do {
269 tmsg(pat, off_msgs[tracelevel]);
270 }
271 while (--tracelevel != new_tracelevel);
272
273 } else if (new_tracelevel > tracelevel) {
274 do {
275 tmsg(pat, on_msgs[tracelevel++]);
276 } while (tracelevel != new_tracelevel);
277 }
278
279 if (dump > 0
280 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0))
281 trace_dump();
282 }
283
284
285 void
set_tracefile(const char * filename,const char * pat,int dump)286 set_tracefile(const char *filename,
287 const char *pat,
288 int dump) /* -1=no dump, 0=default, 1=force */
289 {
290 struct stat stbuf;
291 FILE *n_ftrace;
292 const char *fn;
293
294
295 /* Allow a null filename to increase the level if the trace file
296 * is already open or if coming from a trusted source, such as
297 * a signal or the command line.
298 */
299 if (filename == NULL || filename[0] == '\0') {
300 filename = NULL;
301 if (ftrace == NULL) {
302 if (inittracename[0] == '\0') {
303 msglog("missing trace file name");
304 return;
305 }
306 fn = inittracename;
307 } else {
308 fn = NULL;
309 }
310
311 } else if (!strcmp(filename,"dump/../table")) {
312 trace_dump();
313 return;
314
315 } else {
316 /* Allow the file specified with "-T file" to be reopened,
317 * but require all other names specified over the net to
318 * match the official path. The path can specify a directory
319 * in which the file is to be created.
320 */
321 if (strcmp(filename, inittracename)
322 #ifdef _PATH_TRACE
323 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1)
324 || strstr(filename,"../")
325 || 0 > stat(_PATH_TRACE, &stbuf))
326 #endif
327 ) {
328 msglog("wrong trace file \"%s\"", filename);
329 return;
330 }
331
332 /* If the new tracefile exists, it must be a regular file.
333 */
334 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) {
335 msglog("wrong type (%#x) of trace file \"%s\"",
336 stbuf.st_mode, filename);
337 return;
338 }
339
340 fn = filename;
341 }
342
343 if (fn != NULL) {
344 n_ftrace = fopen(fn, "a");
345 if (n_ftrace == NULL) {
346 msglog("failed to open trace file \"%s\" %s",
347 fn, strerror(errno));
348 if (fn == inittracename)
349 inittracename[0] = '\0';
350 return;
351 }
352
353 tmsg("switch to trace file %s", fn);
354
355 trace_close(file_trace = 1);
356
357 if (fn != savetracename)
358 strncpy(savetracename, fn, sizeof(savetracename)-1);
359 ftrace = n_ftrace;
360
361 fflush(stdout);
362 fflush(stderr);
363 dup2(fileno(ftrace), STDOUT_FILENO);
364 dup2(fileno(ftrace), STDERR_FILENO);
365 }
366
367 if (new_tracelevel == 0 || filename == NULL)
368 new_tracelevel++;
369 tracelevel_msg(pat, dump != 0 ? dump : (filename != NULL));
370 }
371
372
373 /* ARGSUSED */
374 void
sigtrace_on(int s UNUSED)375 sigtrace_on(int s UNUSED)
376 {
377 new_tracelevel++;
378 sigtrace_pat = "SIGUSR1: %s";
379 }
380
381
382 /* ARGSUSED */
383 void
sigtrace_off(int s UNUSED)384 sigtrace_off(int s UNUSED)
385 {
386 new_tracelevel--;
387 sigtrace_pat = "SIGUSR2: %s";
388 }
389
390
391 /* Set tracing after a signal.
392 */
393 void
set_tracelevel(void)394 set_tracelevel(void)
395 {
396 if (new_tracelevel == tracelevel)
397 return;
398
399 /* If tracing entirely off, and there was no tracefile specified
400 * on the command line, then leave it off.
401 */
402 if (new_tracelevel > tracelevel && ftrace == NULL) {
403 if (savetracename[0] != '\0') {
404 set_tracefile(savetracename,sigtrace_pat,0);
405 } else if (inittracename[0] != '\0') {
406 set_tracefile(inittracename,sigtrace_pat,0);
407 } else {
408 new_tracelevel = 0;
409 return;
410 }
411 } else {
412 tracelevel_msg(sigtrace_pat, 0);
413 }
414 }
415
416
417 /* display an address
418 */
419 char *
addrname(naddr addr,naddr mask,int force)420 addrname(naddr addr, /* in network byte order */
421 naddr mask,
422 int force) /* 0=show mask if nonstandard, */
423 { /* 1=always show mask, 2=never */
424 #define NUM_BUFS 4
425 static int bufno;
426 static struct {
427 char str[15+20];
428 } bufs[NUM_BUFS];
429 char *s, *sp;
430 naddr dmask;
431 size_t l;
432 int i;
433
434 strlcpy(bufs[bufno].str, naddr_ntoa(addr), sizeof(bufs[bufno].str));
435 s = bufs[bufno].str;
436 l = sizeof(bufs[bufno].str);
437 bufno = (bufno+1) % NUM_BUFS;
438
439 if (force == 1 || (force == 0 && mask != std_mask(addr))) {
440 sp = &s[strlen(s)];
441
442 dmask = mask & -mask;
443 if (mask + dmask == 0) {
444 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++)
445 continue;
446 (void)snprintf(sp, s + l - sp, "/%d", 32-i);
447
448 } else {
449 (void)snprintf(sp, s + l - sp, " (mask %#x)",
450 (u_int)mask);
451 }
452 }
453
454 return s;
455 #undef NUM_BUFS
456 }
457
458
459 /* display a bit-field
460 */
461 struct bits {
462 u_int bits_mask;
463 u_int bits_clear;
464 const char *bits_name;
465 };
466
467 static const struct bits if_bits[] = {
468 { IFF_LOOPBACK, 0, "LOOPBACK" },
469 { IFF_POINTOPOINT, 0, "PT-TO-PT" },
470 { 0, 0, 0}
471 };
472
473 static const struct bits is_bits[] = {
474 { IS_ALIAS, 0, "ALIAS" },
475 { IS_SUBNET, 0, "" },
476 { IS_REMOTE, (IS_NO_RDISC
477 | IS_BCAST_RDISC), "REMOTE" },
478 { IS_PASSIVE, (IS_NO_RDISC
479 | IS_NO_RIP
480 | IS_NO_SUPER_AG
481 | IS_PM_RDISC
482 | IS_NO_AG), "PASSIVE" },
483 { IS_EXTERNAL, 0, "EXTERNAL" },
484 { IS_CHECKED, 0, "" },
485 { IS_ALL_HOSTS, 0, "" },
486 { IS_ALL_ROUTERS, 0, "" },
487 { IS_DISTRUST, 0, "DISTRUST" },
488 { IS_BROKE, IS_SICK, "BROKEN" },
489 { IS_SICK, 0, "SICK" },
490 { IS_DUP, 0, "DUPLICATE" },
491 { IS_REDIRECT_OK, 0, "REDIRECT_OK" },
492 { IS_NEED_NET_SYN, 0, "" },
493 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" },
494 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" },
495 { (IS_NO_RIPV1_IN
496 | IS_NO_RIPV2_IN
497 | IS_NO_RIPV1_OUT
498 | IS_NO_RIPV2_OUT), 0, "NO_RIP" },
499 { (IS_NO_RIPV1_IN
500 | IS_NO_RIPV1_OUT), 0, "RIPV2" },
501 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" },
502 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" },
503 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" },
504 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" },
505 { (IS_NO_ADV_IN
506 | IS_NO_SOL_OUT
507 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" },
508 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" },
509 { IS_SOL_OUT, 0, "SEND_SOLICIT" },
510 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" },
511 { IS_ADV_OUT, 0, "RDISC_ADV" },
512 { IS_BCAST_RDISC, 0, "BCAST_RDISC" },
513 { IS_PM_RDISC, 0, "" },
514 { 0, 0, "%#x"}
515 };
516
517 static const struct bits rs_bits[] = {
518 { RS_IF, 0, "IF" },
519 { RS_NET_INT, RS_NET_SYN, "NET_INT" },
520 { RS_NET_SYN, 0, "NET_SYN" },
521 { RS_SUBNET, 0, "" },
522 { RS_LOCAL, 0, "LOCAL" },
523 { RS_MHOME, 0, "MHOME" },
524 { RS_STATIC, 0, "STATIC" },
525 { RS_RDISC, 0, "RDISC" },
526 { 0, 0, "%#x"}
527 };
528
529
530 static void
trace_bits(const struct bits * tbl,u_int field,int force)531 trace_bits(const struct bits *tbl,
532 u_int field,
533 int force)
534 {
535 u_int b;
536 char c;
537
538 if (force) {
539 (void)putc('<', ftrace);
540 c = 0;
541 } else {
542 c = '<';
543 }
544
545 while (field != 0
546 && (b = tbl->bits_mask) != 0) {
547 if ((b & field) == b) {
548 if (tbl->bits_name[0] != '\0') {
549 if (c)
550 (void)putc(c, ftrace);
551 (void)fprintf(ftrace, "%s", tbl->bits_name);
552 c = '|';
553 }
554 if (0 == (field &= ~(b | tbl->bits_clear)))
555 break;
556 }
557 tbl++;
558 }
559 if (field != 0 && tbl->bits_name != NULL) {
560 if (c)
561 (void)putc(c, ftrace);
562 (void)fprintf(ftrace, tbl->bits_name, field);
563 c = '|';
564 }
565
566 if (c != '<' || force)
567 (void)fputs("> ", ftrace);
568 }
569
570
571 char *
rtname(naddr dst,naddr mask,naddr gate)572 rtname(naddr dst,
573 naddr mask,
574 naddr gate)
575 {
576 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */
577 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */
578 int i;
579
580 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0));
581 (void)sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate));
582 return buf;
583 }
584
585
586 static void
print_rts(struct rt_spare * rts,int force_metric,int force_ifp,int force_router,int force_tag,int force_time)587 print_rts(struct rt_spare *rts,
588 int force_metric, /* -1=suppress, 0=default */
589 int force_ifp, /* -1=suppress, 0=default */
590 int force_router, /* -1=suppress, 0=default, 1=display */
591 int force_tag, /* -1=suppress, 0=default, 1=display */
592 int force_time) /* 0=suppress, 1=display */
593 {
594 int i;
595
596
597 if (force_metric >= 0)
598 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric);
599 if (force_ifp >= 0)
600 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == NULL ?
601 "if?" : rts->rts_ifp->int_name));
602 if (force_router > 0
603 || (force_router == 0 && rts->rts_router != rts->rts_gate))
604 (void)fprintf(ftrace, "router=%s ",
605 naddr_ntoa(rts->rts_router));
606 if (force_time > 0)
607 (void)fprintf(ftrace, "%s ", ts(rts->rts_time));
608 if (force_tag > 0
609 || (force_tag == 0 && rts->rts_tag != 0))
610 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag));
611 if (rts->rts_de_ag != 0) {
612 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++)
613 continue;
614 (void)fprintf(ftrace, "de_ag=%d ", i);
615 }
616
617 }
618
619
620 void
trace_if(const char * act,struct interface * ifp)621 trace_if(const char *act,
622 struct interface *ifp)
623 {
624 if (!TRACEACTIONS || ftrace == NULL)
625 return;
626
627 lastlog();
628 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name);
629 (void)fprintf(ftrace, "%-15s-->%-15s ",
630 naddr_ntoa(ifp->int_addr),
631 addrname(((ifp->int_if_flags & IFF_POINTOPOINT)
632 ? ifp->int_dstaddr
633 : htonl(ifp->int_net)),
634 ifp->int_mask, 1));
635 if (ifp->int_metric != 0)
636 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric);
637 if (ifp->int_adj_inmetric != 0)
638 (void)fprintf(ftrace, "adj_inmetric=%u ",
639 ifp->int_adj_inmetric);
640 if (ifp->int_adj_outmetric != 0)
641 (void)fprintf(ftrace, "adj_outmetric=%u ",
642 ifp->int_adj_outmetric);
643 if (!IS_RIP_OUT_OFF(ifp->int_state)
644 && ifp->int_d_metric != 0)
645 (void)fprintf(ftrace, "fake_default=%u ", ifp->int_d_metric);
646 trace_bits(if_bits, ifp->int_if_flags, 0);
647 trace_bits(is_bits, ifp->int_state, 0);
648 (void)fputc('\n',ftrace);
649 }
650
651
652 void
trace_upslot(struct rt_entry * rt,struct rt_spare * rts,struct rt_spare * new)653 trace_upslot(struct rt_entry *rt,
654 struct rt_spare *rts,
655 struct rt_spare *new)
656 {
657 if (!TRACEACTIONS || ftrace == NULL)
658 return;
659
660 if (rts->rts_gate == new->rts_gate
661 && rts->rts_router == new->rts_router
662 && rts->rts_metric == new->rts_metric
663 && rts->rts_tag == new->rts_tag
664 && rts->rts_de_ag == new->rts_de_ag)
665 return;
666
667 lastlog();
668 if (new->rts_gate == 0) {
669 (void)fprintf(ftrace, "Del #%d %-35s ",
670 (int)(rts - rt->rt_spares),
671 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate));
672 print_rts(rts, 0,0,0,0,
673 (rts != rt->rt_spares
674 || AGE_RT(rt->rt_state,new->rts_ifp)));
675
676 } else if (rts->rts_gate != RIP_DEFAULT) {
677 (void)fprintf(ftrace, "Chg #%d %-35s ",
678 (int)(rts - rt->rt_spares),
679 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate));
680 print_rts(rts, 0,0,
681 rts->rts_gate != new->rts_gate,
682 rts->rts_tag != new->rts_tag,
683 rts != rt->rt_spares || AGE_RT(rt->rt_state,
684 rt->rt_ifp));
685
686 (void)fprintf(ftrace, "\n %19s%-16s ", "",
687 (new->rts_gate != rts->rts_gate
688 ? naddr_ntoa(new->rts_gate) : ""));
689 print_rts(new,
690 -(new->rts_metric == rts->rts_metric),
691 -(new->rts_ifp == rts->rts_ifp),
692 0,
693 rts->rts_tag != new->rts_tag,
694 (new->rts_time != rts->rts_time
695 && (rts != rt->rt_spares
696 || AGE_RT(rt->rt_state, new->rts_ifp))));
697
698 } else {
699 (void)fprintf(ftrace, "Add #%d %-35s ",
700 (int)(rts - rt->rt_spares),
701 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate));
702 print_rts(new, 0,0,0,0,
703 (rts != rt->rt_spares
704 || AGE_RT(rt->rt_state,new->rts_ifp)));
705 }
706 (void)fputc('\n',ftrace);
707 }
708
709
710 /* miscellaneous message checked by the caller
711 */
712 void
trace_misc(const char * p,...)713 trace_misc(const char *p, ...)
714 {
715 va_list args;
716
717 if (ftrace == NULL)
718 return;
719
720 lastlog();
721 va_start(args, p);
722 vfprintf(ftrace, p, args);
723 va_end(args);
724 (void)fputc('\n',ftrace);
725 }
726
727
728 /* display a message if tracing actions
729 */
730 void
trace_act(const char * p,...)731 trace_act(const char *p, ...)
732 {
733 va_list args;
734
735 if (!TRACEACTIONS || ftrace == NULL)
736 return;
737
738 lastlog();
739 va_start(args, p);
740 vfprintf(ftrace, p, args);
741 va_end(args);
742 (void)fputc('\n',ftrace);
743 }
744
745
746 /* display a message if tracing packets
747 */
748 void
trace_pkt(const char * p,...)749 trace_pkt(const char *p, ...)
750 {
751 va_list args;
752
753 if (!TRACEPACKETS || ftrace == NULL)
754 return;
755
756 lastlog();
757 va_start(args, p);
758 vfprintf(ftrace, p, args);
759 va_end(args);
760 (void)fputc('\n',ftrace);
761 }
762
763
764 void
trace_change(struct rt_entry * rt,u_int state,struct rt_spare * new,const char * label)765 trace_change(struct rt_entry *rt,
766 u_int state,
767 struct rt_spare *new,
768 const char *label)
769 {
770 if (ftrace == NULL)
771 return;
772
773 if (rt->rt_metric == new->rts_metric
774 && rt->rt_gate == new->rts_gate
775 && rt->rt_router == new->rts_router
776 && rt->rt_state == state
777 && rt->rt_tag == new->rts_tag
778 && rt->rt_de_ag == new->rts_de_ag)
779 return;
780
781 lastlog();
782 (void)fprintf(ftrace, "%s %-35s ",
783 label,
784 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate));
785 print_rts(rt->rt_spares,
786 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp));
787 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state);
788
789 (void)fprintf(ftrace, "\n%*s %19s%-16s ",
790 (int)strlen(label), "", "",
791 (rt->rt_gate != new->rts_gate
792 ? naddr_ntoa(new->rts_gate) : ""));
793 print_rts(new,
794 -(new->rts_metric == rt->rt_metric),
795 -(new->rts_ifp == rt->rt_ifp),
796 0,
797 rt->rt_tag != new->rts_tag,
798 (rt->rt_time != new->rts_time
799 && AGE_RT(rt->rt_state,new->rts_ifp)));
800 if (rt->rt_state != state)
801 trace_bits(rs_bits, state, 1);
802 (void)fputc('\n',ftrace);
803 }
804
805
806 void
trace_add_del(const char * action,struct rt_entry * rt)807 trace_add_del(const char * action, struct rt_entry *rt)
808 {
809 if (ftrace == NULL)
810 return;
811
812 lastlog();
813 (void)fprintf(ftrace, "%s %-35s ",
814 action,
815 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate));
816 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp));
817 trace_bits(rs_bits, rt->rt_state, 0);
818 (void)fputc('\n',ftrace);
819 }
820
821
822 /* ARGSUSED */
823 static int
walk_trace(struct radix_node * rn,struct walkarg * w UNUSED)824 walk_trace(struct radix_node *rn,
825 struct walkarg *w UNUSED)
826 {
827 #define RT ((struct rt_entry *)rn)
828 struct rt_spare *rts;
829 int i;
830
831 (void)fprintf(ftrace, " %-35s ",
832 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate));
833 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp));
834 trace_bits(rs_bits, RT->rt_state, 0);
835 if (RT->rt_poison_time >= now_garbage
836 && RT->rt_poison_metric < RT->rt_metric)
837 (void)fprintf(ftrace, "pm=%d@%s",
838 RT->rt_poison_metric, ts(RT->rt_poison_time));
839
840 rts = &RT->rt_spares[1];
841 for (i = 1; i < NUM_SPARES; i++, rts++) {
842 if (rts->rts_gate != RIP_DEFAULT) {
843 (void)fprintf(ftrace,"\n #%d%15s%-16s ",
844 i, "", naddr_ntoa(rts->rts_gate));
845 print_rts(rts, 0,0,0,0,1);
846 }
847 }
848 (void)fputc('\n',ftrace);
849
850 return 0;
851 }
852
853
854 static void
trace_dump(void)855 trace_dump(void)
856 {
857 struct interface *ifp;
858
859 if (ftrace == NULL)
860 return;
861 lastlog();
862
863 (void)fputs("current daemon state:\n", ftrace);
864 LIST_FOREACH(ifp, &ifnet, int_list)
865 trace_if("", ifp);
866 (void)rn_walktree(rhead, walk_trace, 0);
867 }
868
869
870 void
trace_rip(const char * dir1,const char * dir2,struct sockaddr_in * who,struct interface * ifp,struct rip * msg,int size)871 trace_rip(const char *dir1, const char *dir2,
872 struct sockaddr_in *who,
873 struct interface *ifp,
874 struct rip *msg,
875 int size) /* total size of message */
876 {
877 struct netinfo *n, *lim;
878 # define NA ((struct netauth*)n)
879 int i, seen_route;
880
881 if (!TRACEPACKETS || ftrace == NULL)
882 return;
883
884 lastlog();
885 if (msg->rip_cmd >= RIPCMD_MAX
886 || msg->rip_vers == 0) {
887 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s"
888 " %s.%d size=%d\n",
889 dir1, msg->rip_vers, msg->rip_cmd, dir2,
890 naddr_ntoa(who->sin_addr.s_addr),
891 ntohs(who->sin_port),
892 size);
893 return;
894 }
895
896 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n",
897 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2,
898 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port),
899 ifp ? " via " : "", ifp ? ifp->int_name : "");
900 if (!TRACECONTENTS)
901 return;
902
903 seen_route = 0;
904 switch (msg->rip_cmd) {
905 case RIPCMD_REQUEST:
906 case RIPCMD_RESPONSE:
907 n = msg->rip_nets;
908 lim = (struct netinfo *)((char*)msg + size);
909 for (; n < lim; n++) {
910 if (!seen_route
911 && n->n_family == RIP_AF_UNSPEC
912 && ntohl(n->n_metric) == HOPCNT_INFINITY
913 && msg->rip_cmd == RIPCMD_REQUEST
914 && (n+1 == lim
915 || (n+2 == lim
916 && (n+1)->n_family == RIP_AF_AUTH))) {
917 (void)fputs("\tQUERY ", ftrace);
918 if (n->n_dst != 0)
919 (void)fprintf(ftrace, "%s ",
920 naddr_ntoa(n->n_dst));
921 if (n->n_mask != 0)
922 (void)fprintf(ftrace, "mask=%#x ",
923 (u_int)ntohl(n->n_mask));
924 if (n->n_nhop != 0)
925 (void)fprintf(ftrace, "nhop=%s ",
926 naddr_ntoa(n->n_nhop));
927 if (n->n_tag != 0)
928 (void)fprintf(ftrace, "tag=%#x ",
929 ntohs(n->n_tag));
930 (void)fputc('\n',ftrace);
931 continue;
932 }
933
934 if (n->n_family == RIP_AF_AUTH) {
935 if (NA->a_type == RIP_AUTH_PW
936 && n == msg->rip_nets) {
937 (void)fprintf(ftrace, "\tPassword"
938 " Authentication:"
939 " \"%s\"\n",
940 qstring(NA->au.au_pw,
941 RIP_AUTH_PW_LEN));
942 continue;
943 }
944
945 if (NA->a_type == RIP_AUTH_MD5
946 && n == msg->rip_nets) {
947 (void)fprintf(ftrace,
948 "\tMD5 Auth"
949 " pkt_len=%d KeyID=%u"
950 " auth_len=%d"
951 " seqno=%#x"
952 " rsvd=%#x,%#x\n",
953 ntohs(NA->au.a_md5.md5_pkt_len),
954 NA->au.a_md5.md5_keyid,
955 NA->au.a_md5.md5_auth_len,
956 (int)ntohl(NA->au.a_md5.md5_seqno),
957 (int)ntohs(NA->au.a_md5.rsvd[0]),
958 (int)ntohs(NA->au.a_md5.rsvd[1]));
959 continue;
960 }
961 (void)fprintf(ftrace,
962 "\tAuthentication type %d: ",
963 ntohs(NA->a_type));
964 for (i = 0;
965 i < (int)sizeof(NA->au.au_pw);
966 i++)
967 (void)fprintf(ftrace, "%02x ",
968 NA->au.au_pw[i]);
969 (void)fputc('\n',ftrace);
970 continue;
971 }
972
973 seen_route = 1;
974 if (n->n_family != RIP_AF_INET) {
975 (void)fprintf(ftrace,
976 "\t(af %d) %-18s mask=%#x ",
977 ntohs(n->n_family),
978 naddr_ntoa(n->n_dst),
979 (u_int)ntohl(n->n_mask));
980 } else if (msg->rip_vers == RIPv1) {
981 (void)fprintf(ftrace, "\t%-18s ",
982 addrname(n->n_dst,
983 ntohl(n->n_mask),
984 n->n_mask==0 ? 2 : 1));
985 } else {
986 (void)fprintf(ftrace, "\t%-18s ",
987 addrname(n->n_dst,
988 ntohl(n->n_mask),
989 n->n_mask==0 ? 2 : 0));
990 }
991 (void)fprintf(ftrace, "metric=%-2d ",
992 (u_int)ntohl(n->n_metric));
993 if (n->n_nhop != 0)
994 (void)fprintf(ftrace, " nhop=%s ",
995 naddr_ntoa(n->n_nhop));
996 if (n->n_tag != 0)
997 (void)fprintf(ftrace, "tag=%#x",
998 ntohs(n->n_tag));
999 (void)fputc('\n',ftrace);
1000 }
1001 if (size != (char *)n - (char *)msg)
1002 (void)fprintf(ftrace, "truncated record, len %d\n",
1003 size);
1004 break;
1005
1006 case RIPCMD_TRACEON:
1007 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4,
1008 msg->rip_tracefile);
1009 break;
1010
1011 case RIPCMD_TRACEOFF:
1012 break;
1013 }
1014 }
1015