1/*
2 * Copyright (c) 1983, 1989, 1991, 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 * 4. 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
30#ifndef lint
31static const char copyright[] =
32"@(#) Copyright (c) 1983, 1989, 1991, 1993\n\
33 The Regents of the University of California. All rights reserved.\n";
34#endif /* not lint */
35
36#ifndef lint
37#if 0
38static char sccsid[] = "@(#)route.c 8.6 (Berkeley) 4/28/95";
39#endif
40#endif /* not lint */
41
42#include <sys/cdefs.h>
43__FBSDID("$FreeBSD: head/sbin/route/route.c 251581 2013-06-09 17:40:06Z hrs $");
44
45#include <sys/param.h>
46#include <sys/file.h>
47#include <sys/socket.h>
48#include <sys/ioctl.h>
49#include <sys/sysctl.h>
50#include <sys/types.h>
51#include <sys/queue.h>
52
53#include <net/if.h>
54#include <net/route.h>
55#include <net/if_dl.h>
56#include <netinet/in.h>
57#include <netinet/if_ether.h>
58#include <netatalk/at.h>
59#include <arpa/inet.h>
60#include <netdb.h>
61
62#include <ctype.h>
63#include <err.h>
64#include <errno.h>
65#include <paths.h>
66#include <stdio.h>
67#include <stdlib.h>
68#include <string.h>
69#include <sysexits.h>
70#include <unistd.h>
71#include <ifaddrs.h>
72
73struct keytab {
74 const char *kt_cp;
75 int kt_i;
76} keywords[] = {
77#include "keywords.h"
78 {0, 0}
79};
80
81union sockunion {
82 struct sockaddr sa;
83 struct sockaddr_in sin;
84#ifdef INET6
85 struct sockaddr_in6 sin6;
86#endif
87 struct sockaddr_at sat;
88 struct sockaddr_dl sdl;
89 struct sockaddr_storage ss; /* added to avoid memory overrun */
90} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp;
91
92typedef union sockunion *sup;
93int pid, rtm_addrs;
94int s;
95int forcehost, forcenet, doflush, nflag, af, qflag, tflag;
96int verbose, aflen = sizeof (struct sockaddr_in);
97int locking, lockrest, debugonly;
98struct rt_metrics rt_metrics;
99u_long rtm_inits;
100uid_t uid;
101static int defaultfib;
102static int numfibs;
103
104static int atalk_aton(const char *, struct at_addr *);
105static char *atalk_ntoa(struct at_addr);
106static void bprintf(FILE *, int, u_char *);
107static void flushroutes(int argc, char *argv[]);
108static int flushroutes_fib(int);
109static int getaddr(int, char *, struct hostent **, int);
110static int keyword(const char *);
111static void inet_makenetandmask(u_long, struct sockaddr_in *, u_long);
112#ifdef INET6
113static int inet6_makenetandmask(struct sockaddr_in6 *, const char *);
114#endif
115static void interfaces(void);
116static void mask_addr(void);
117static void monitor(int, char*[]);
118static const char *netname(struct sockaddr *);
119static void newroute(int, char **);
120static int newroute_fib(int, char *, int);
121static void pmsg_addrs(char *, int, size_t);
122static void pmsg_common(struct rt_msghdr *, size_t);
123static int prefixlen(const char *);
124static void print_getmsg(struct rt_msghdr *, int, int);
125static void print_rtmsg(struct rt_msghdr *, size_t);
126static const char *routename(struct sockaddr *);
127static int rtmsg(int, int, int);
128static void set_metric(char *, int);
129static int set_sofib(int);
130static int set_procfib(int);
131static void sockaddr(char *, struct sockaddr *);
132static void sodump(sup, const char *);
133extern char *iso_ntoa(void);
134
135struct fibl {
136 TAILQ_ENTRY(fibl) fl_next;
137
138 int fl_num;
139 int fl_error;
140 int fl_errno;
141};
142TAILQ_HEAD(fibl_head_t, fibl) fibl_head;
143
144static int fiboptlist_csv(const char *, struct fibl_head_t *);
145static int fiboptlist_range(const char *, struct fibl_head_t *);
146
147static void usage(const char *) __dead2;
148
149void
150usage(const char *cp)
151{
152 if (cp != NULL)
153 warnx("bad keyword: %s", cp);
154 (void) fprintf(stderr,
155 "usage: route [-dnqtv] command [[modifiers] args]\n");
156 exit(EX_USAGE);
157 /* NOTREACHED */
158}
159
160int
161main(int argc, char **argv)
162{
163 int ch;
164 size_t len;
165
166 if (argc < 2)
167 usage(NULL);
168
169 while ((ch = getopt(argc, argv, "nqdtv")) != -1)
170 switch(ch) {
171 case 'n':
172 nflag = 1;
173 break;
174 case 'q':
175 qflag = 1;
176 break;
177 case 'v':
178 verbose = 1;
179 break;
180 case 't':
181 tflag = 1;
182 break;
183 case 'd':
184 debugonly = 1;
185 break;
186 case '?':
187 default:
188 usage(NULL);
189 }
190 argc -= optind;
191 argv += optind;
192
193 pid = getpid();
194 uid = geteuid();
195 if (tflag)
196 s = open(_PATH_DEVNULL, O_WRONLY, 0);
197 else
198 s = socket(PF_ROUTE, SOCK_RAW, 0);
199 if (s < 0)
200 err(EX_OSERR, "socket");
201
202 len = sizeof(numfibs);
203 if (sysctlbyname("net.fibs", (void *)&numfibs, &len, NULL, 0) == -1)
204 numfibs = -1;
205
206 len = sizeof(defaultfib);
207 if (numfibs != -1 &&
208 sysctlbyname("net.my_fibnum", (void *)&defaultfib, &len, NULL,
209 0) == -1)
210 defaultfib = -1;
211
212 if (*argv != NULL)
213 switch (keyword(*argv)) {
214 case K_GET:
215 case K_SHOW:
216 uid = 0;
217 /* FALLTHROUGH */
218
219 case K_CHANGE:
220 case K_ADD:
221 case K_DEL:
222 case K_DELETE:
223 newroute(argc, argv);
224 /* NOTREACHED */
225
226 case K_MONITOR:
227 monitor(argc, argv);
228 /* NOTREACHED */
229
230 case K_FLUSH:
231 flushroutes(argc, argv);
232 exit(0);
233 /* NOTREACHED */
234 }
235 usage(*argv);
236 /* NOTREACHED */
237}
238
239static int
240set_sofib(int fib)
241{
242
243 if (fib < 0)
244 return (0);
245 return (setsockopt(s, SOL_SOCKET, SO_SETFIB, (void *)&fib,
246 sizeof(fib)));
247}
248
249static int
250set_procfib(int fib)
251{
252
253 if (fib < 0)
254 return (0);
255 return (setfib(fib));
256}
257
258static int
259fiboptlist_range(const char *arg, struct fibl_head_t *flh)
260{
261 struct fibl *fl;
262 char *str0, *str, *token, *endptr;
263 int fib[2], i, error;
264
265 str0 = str = strdup(arg);
266 error = 0;
267 i = 0;
268 while ((token = strsep(&str, "-")) != NULL) {
269 switch (i) {
270 case 0:
271 case 1:
272 errno = 0;
273 fib[i] = strtol(token, &endptr, 0);
274 if (errno == 0) {
275 if (*endptr != '\0' ||
276 fib[i] < 0 ||
277 (numfibs != -1 && fib[i] > numfibs - 1))
278 errno = EINVAL;
279 }
280 if (errno)
281 error = 1;
282 break;
283 default:
284 error = 1;
285 }
286 if (error)
287 goto fiboptlist_range_ret;
288 i++;
289 }
290 if (fib[0] >= fib[1]) {
291 error = 1;
292 goto fiboptlist_range_ret;
293 }
294 for (i = fib[0]; i <= fib[1]; i++) {
295 fl = calloc(1, sizeof(*fl));
296 if (fl == NULL) {
297 error = 1;
298 goto fiboptlist_range_ret;
299 }
300 fl->fl_num = i;
301 TAILQ_INSERT_TAIL(flh, fl, fl_next);
302 }
303fiboptlist_range_ret:
304 free(str0);
305 return (error);
306}
307
308#define ALLSTRLEN 64
309static int
310fiboptlist_csv(const char *arg, struct fibl_head_t *flh)
311{
312 struct fibl *fl;
313 char *str0, *str, *token, *endptr;
314 int fib, error;
315
316 if (strcmp("all", arg) == 0) {
317 str = calloc(1, ALLSTRLEN);
318 if (str == NULL) {
319 error = 1;
320 goto fiboptlist_csv_ret;
321 }
322 if (numfibs > 1)
323 snprintf(str, ALLSTRLEN - 1, "%d-%d", 0, numfibs - 1);
324 else
325 snprintf(str, ALLSTRLEN - 1, "%d", 0);
326 } else if (strcmp("default", arg) == 0) {
327 str0 = str = calloc(1, ALLSTRLEN);
328 if (str == NULL) {
329 error = 1;
330 goto fiboptlist_csv_ret;
331 }
332 snprintf(str, ALLSTRLEN - 1, "%d", defaultfib);
333 } else
334 str0 = str = strdup(arg);
335
336 error = 0;
337 while ((token = strsep(&str, ",")) != NULL) {
338 if (*token != '-' && strchr(token, '-') != NULL) {
339 error = fiboptlist_range(token, flh);
340 if (error)
341 goto fiboptlist_csv_ret;
342 } else {
343 errno = 0;
344 fib = strtol(token, &endptr, 0);
345 if (errno == 0) {
346 if (*endptr != '\0' ||
347 fib < 0 ||
348 (numfibs != -1 && fib > numfibs - 1))
349 errno = EINVAL;
350 }
351 if (errno) {
352 error = 1;
353 goto fiboptlist_csv_ret;
354 }
355 fl = calloc(1, sizeof(*fl));
356 if (fl == NULL) {
357 error = 1;
358 goto fiboptlist_csv_ret;
359 }
360 fl->fl_num = fib;
361 TAILQ_INSERT_TAIL(flh, fl, fl_next);
362 }
363 }
364fiboptlist_csv_ret:
365 free(str0);
366 return (error);
367}
368
369/*
370 * Purge all entries in the routing tables not
371 * associated with network interfaces.
372 */
373static void
374flushroutes(int argc, char *argv[])
375{
376 struct fibl *fl;
377 int error;
378
379 if (uid != 0 && !debugonly && !tflag) {
380 errx(EX_NOPERM, "must be root to alter routing table");
381 }
382 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
383
384 TAILQ_INIT(&fibl_head);
385 while (argc > 1) {
386 argc--;
387 argv++;
388 if (**argv != '-')
389 usage(*argv);
390 switch (keyword(*argv + 1)) {
391 case K_INET:
392 af = AF_INET;
393 break;
394#ifdef INET6
395 case K_INET6:
396 af = AF_INET6;
397 break;
398#endif
399 case K_ATALK:
400 af = AF_APPLETALK;
401 break;
402 case K_LINK:
403 af = AF_LINK;
404 break;
405 case K_FIB:
406 if (!--argc)
407 usage(*argv);
408 error = fiboptlist_csv(*++argv, &fibl_head);
409 if (error)
410 errx(EX_USAGE, "invalid fib number: %s", *argv);
411 break;
412 default:
413 usage(*argv);
414 }
415 }
416 if (TAILQ_EMPTY(&fibl_head)) {
417 error = fiboptlist_csv("default", &fibl_head);
418 if (error)
419 errx(EX_OSERR, "fiboptlist_csv failed.");
420 }
421 TAILQ_FOREACH(fl, &fibl_head, fl_next)
422 flushroutes_fib(fl->fl_num);
423}
424
425static int
426flushroutes_fib(int fib)
427{
428 struct rt_msghdr *rtm;
429 size_t needed;
430 char *buf, *next, *lim;
431 int mib[6], rlen, seqno, count = 0;
432 int error;
433
434 error = set_sofib(fib);
435 error += set_procfib(fib);
436 if (error) {
437 warn("fib number %d is ignored", fib);
438 return (error);
439 }
440
441retry:
442 mib[0] = CTL_NET;
443 mib[1] = PF_ROUTE;
444 mib[2] = 0; /* protocol */
445 mib[3] = 0; /* wildcard address family */
446 mib[4] = NET_RT_DUMP;
447 mib[5] = 0; /* no flags */
448 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
449 err(EX_OSERR, "route-sysctl-estimate");
450 if ((buf = malloc(needed)) == NULL)
451 errx(EX_OSERR, "malloc failed");
452 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
453 if (errno == ENOMEM && count++ < 10) {
454 warnx("Routing table grew, retrying");
455 sleep(1);
456 free(buf);
457 goto retry;
458 }
459 err(EX_OSERR, "route-sysctl-get");
460 }
461 lim = buf + needed;
462 if (verbose)
463 (void) printf("Examining routing table from sysctl\n");
464 seqno = 0; /* ??? */
465 for (next = buf; next < lim; next += rtm->rtm_msglen) {
466 rtm = (struct rt_msghdr *)next;
467 if (verbose)
468 print_rtmsg(rtm, rtm->rtm_msglen);
469 if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
470 continue;
471 if (af != 0) {
472 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
473
474 if (sa->sa_family != af)
475 continue;
476 }
477 if (debugonly)
478 continue;
479 rtm->rtm_type = RTM_DELETE;
480 rtm->rtm_seq = seqno;
481 rlen = write(s, next, rtm->rtm_msglen);
482 if (rlen < 0 && errno == EPERM)
483 err(1, "write to routing socket");
484 if (rlen < (int)rtm->rtm_msglen) {
485 warn("write to routing socket");
486 (void) printf("got only %d for rlen\n", rlen);
487 free(buf);
488 goto retry;
489 break;
490 }
491 seqno++;
492 if (qflag)
493 continue;
494 if (verbose)
495 print_rtmsg(rtm, rlen);
496 else {
497 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
498
499 printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
500 routename(sa) : netname(sa));
501 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa);
502 printf("%-20.20s ", routename(sa));
503 if (fib >= 0)
504 printf("-fib %-3d ", fib);
505 printf("done\n");
506 }
507 }
508 return (error);
509}
510
511const char *
512routename(struct sockaddr *sa)
513{
514 const char *cp;
515 static char line[MAXHOSTNAMELEN + 1];
516 struct hostent *hp;
517 static char domain[MAXHOSTNAMELEN + 1];
518 static int first = 1, n;
519
520 if (first) {
521 first = 0;
522 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
523 (cp = strchr(domain, '.'))) {
524 domain[MAXHOSTNAMELEN] = '\0';
525 (void) strcpy(domain, cp + 1);
526 } else
527 domain[0] = 0;
528 }
529
530 if (sa->sa_len == 0)
531 strcpy(line, "default");
532 else switch (sa->sa_family) {
533
534 case AF_INET:
535 { struct in_addr in;
536 in = ((struct sockaddr_in *)sa)->sin_addr;
537
538 cp = NULL;
539 if (in.s_addr == INADDR_ANY || sa->sa_len < 4)
540 cp = "default";
541 if (cp == NULL && !nflag) {
542 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
543 AF_INET);
544 if (hp != NULL) {
545 char *cptr;
546 cptr = strchr(hp->h_name, '.');
547 if (cptr != NULL &&
548 strcmp(cptr + 1, domain) == 0)
549 *cptr = '\0';
550 cp = hp->h_name;
551 }
552 }
553 if (cp != NULL) {
554 strncpy(line, cp, sizeof(line) - 1);
555 line[sizeof(line) - 1] = '\0';
556 } else
557 (void) sprintf(line, "%s", inet_ntoa(in));
558 break;
559 }
560
561#ifdef INET6
562 case AF_INET6:
563 {
564 struct sockaddr_in6 sin6; /* use static var for safety */
565 int niflags = 0;
566
567 memset(&sin6, 0, sizeof(sin6));
568 memcpy(&sin6, sa, sa->sa_len);
569 sin6.sin6_len = sizeof(struct sockaddr_in6);
570 sin6.sin6_family = AF_INET6;
571 if (nflag)
572 niflags |= NI_NUMERICHOST;
573 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
574 line, sizeof(line), NULL, 0, niflags) != 0)
575 strncpy(line, "invalid", sizeof(line));
576
577 return(line);
578 }
579#endif
580
581 case AF_APPLETALK:
582 (void) snprintf(line, sizeof(line), "atalk %s",
583 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
584 break;
585
586 case AF_LINK:
587 return (link_ntoa((struct sockaddr_dl *)sa));
588
589 default:
590 {
591 u_short *sp = (u_short *)sa;
592 u_short *splim = sp + ((sa->sa_len + 1) >> 1);
593 char *cps = line + sprintf(line, "(%d)", sa->sa_family);
594 char *cpe = line + sizeof(line);
595
596 while (++sp < splim && cps < cpe) /* start with sa->sa_data */
597 if ((n = snprintf(cps, cpe - cps, " %x", *sp)) > 0)
598 cps += n;
599 else
600 *cps = '\0';
601 break;
602 }
603 }
604 return (line);
605}
606
607/*
608 * Return the name of the network whose address is given.
609 * The address is assumed to be that of a net, not a host.
610 */
611const char *
612netname(struct sockaddr *sa)
613{
614 const char *cp = NULL;
615 static char line[MAXHOSTNAMELEN + 1];
616 struct netent *np = NULL;
617 u_long i;
618 int n;
619
620 switch (sa->sa_family) {
621
622 case AF_INET:
623 { struct in_addr in;
624 in = ((struct sockaddr_in *)sa)->sin_addr;
625
626 i = in.s_addr = ntohl(in.s_addr);
627 if (in.s_addr == 0)
628 cp = "default";
629 else if (!nflag) {
630 np = getnetbyaddr(i, AF_INET);
631 if (np != NULL)
632 cp = np->n_name;
633 }
634#define C(x) (unsigned)((x) & 0xff)
635 if (cp != NULL)
636 strncpy(line, cp, sizeof(line));
637 else if ((in.s_addr & 0xffffff) == 0)
638 (void) sprintf(line, "%u", C(in.s_addr >> 24));
639 else if ((in.s_addr & 0xffff) == 0)
640 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24),
641 C(in.s_addr >> 16));
642 else if ((in.s_addr & 0xff) == 0)
643 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
644 C(in.s_addr >> 16), C(in.s_addr >> 8));
645 else
646 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
647 C(in.s_addr >> 16), C(in.s_addr >> 8),
648 C(in.s_addr));
649#undef C
650 break;
651 }
652
653#ifdef INET6
654 case AF_INET6:
655 {
656 struct sockaddr_in6 sin6; /* use static var for safety */
657 int niflags = 0;
658
659 memset(&sin6, 0, sizeof(sin6));
660 memcpy(&sin6, sa, sa->sa_len);
661 sin6.sin6_len = sizeof(struct sockaddr_in6);
662 sin6.sin6_family = AF_INET6;
663 if (nflag)
664 niflags |= NI_NUMERICHOST;
665 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
666 line, sizeof(line), NULL, 0, niflags) != 0)
667 strncpy(line, "invalid", sizeof(line));
668
669 return(line);
670 }
671#endif
672
673 case AF_APPLETALK:
674 (void) snprintf(line, sizeof(line), "atalk %s",
675 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
676 break;
677
678 case AF_LINK:
679 return (link_ntoa((struct sockaddr_dl *)sa));
680
681
682 default:
683 {
684 u_short *sp = (u_short *)sa->sa_data;
685 u_short *splim = sp + ((sa->sa_len + 1)>>1);
686 char *cps = line + sprintf(line, "af %d:", sa->sa_family);
687 char *cpe = line + sizeof(line);
688
689 while (sp < splim && cps < cpe)
690 if ((n = snprintf(cps, cpe - cps, " %x", *sp++)) > 0)
691 cps += n;
692 else
693 *cps = '\0';
694 break;
695 }
696 }
697 return (line);
698}
699
700static void
701set_metric(char *value, int key)
702{
703 int flag = 0;
704 u_long noval, *valp = &noval;
705
706 switch (key) {
707#define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
708 caseof(K_MTU, RTV_MTU, rmx_mtu);
709 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
710 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
711 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
712 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
713 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
714 caseof(K_RTT, RTV_RTT, rmx_rtt);
715 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
716 caseof(K_WEIGHT, RTV_WEIGHT, rmx_weight);
717 }
718 rtm_inits |= flag;
719 if (lockrest || locking)
720 rt_metrics.rmx_locks |= flag;
721 if (locking)
722 locking = 0;
723 *valp = atoi(value);
724}
725
726#define F_ISHOST 0x01
727#define F_FORCENET 0x02
728#define F_FORCEHOST 0x04
729#define F_PROXY 0x08
730#define F_INTERFACE 0x10
731
732static void
733newroute(int argc, char **argv)
734{
735 struct hostent *hp;
736 struct fibl *fl;
737 char *cmd;
738 const char *dest, *gateway, *errmsg;
739 int key, error, flags, nrflags, fibnum;
740
741 if (uid != 0 && !debugonly && !tflag) {
742 errx(EX_NOPERM, "must be root to alter routing table");
743 }
744
745 dest = NULL;
746 gateway = NULL;
747 flags = RTF_STATIC;
748 nrflags = 0;
749 hp = NULL;
750 TAILQ_INIT(&fibl_head);
751
752 cmd = argv[0];
753 if (*cmd != 'g' && *cmd != 's')
754 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
755
756 while (--argc > 0) {
757 if (**(++argv)== '-') {
758 switch (key = keyword(1 + *argv)) {
759 case K_LINK:
760 af = AF_LINK;
761 aflen = sizeof(struct sockaddr_dl);
762 break;
763 case K_INET:
764 af = AF_INET;
765 aflen = sizeof(struct sockaddr_in);
766 break;
767#ifdef INET6
768 case K_INET6:
769 af = AF_INET6;
770 aflen = sizeof(struct sockaddr_in6);
771 break;
772#endif
773 case K_ATALK:
774 af = AF_APPLETALK;
775 aflen = sizeof(struct sockaddr_at);
776 break;
777 case K_SA:
778 af = PF_ROUTE;
779 aflen = sizeof(union sockunion);
780 break;
781 case K_IFACE:
782 case K_INTERFACE:
783 nrflags |= F_INTERFACE;
784 break;
785 case K_NOSTATIC:
786 flags &= ~RTF_STATIC;
787 break;
788 case K_LOCK:
789 locking = 1;
790 break;
791 case K_LOCKREST:
792 lockrest = 1;
793 break;
794 case K_HOST:
795 nrflags |= F_FORCEHOST;
796 break;
797 case K_REJECT:
798 flags |= RTF_REJECT;
799 break;
800 case K_BLACKHOLE:
801 flags |= RTF_BLACKHOLE;
802 break;
803 case K_PROTO1:
804 flags |= RTF_PROTO1;
805 break;
806 case K_PROTO2:
807 flags |= RTF_PROTO2;
808 break;
809 case K_PROXY:
810 nrflags |= F_PROXY;
811 break;
812 case K_XRESOLVE:
813 flags |= RTF_XRESOLVE;
814 break;
815 case K_STATIC:
816 flags |= RTF_STATIC;
817 break;
818 case K_STICKY:
819 flags |= RTF_STICKY;
820 break;
821 case K_NOSTICK:
822 flags &= ~RTF_STICKY;
823 break;
824 case K_FIB:
825 if (!--argc)
826 usage(NULL);
827 error = fiboptlist_csv(*++argv, &fibl_head);
828 if (error)
829 errx(EX_USAGE,
830 "invalid fib number: %s", *argv);
831 break;
832 case K_IFA:
833 if (!--argc)
834 usage(NULL);
835 getaddr(RTA_IFA, *++argv, 0, nrflags);
836 break;
837 case K_IFP:
838 if (!--argc)
839 usage(NULL);
840 getaddr(RTA_IFP, *++argv, 0, nrflags);
841 break;
842 case K_GENMASK:
843 if (!--argc)
844 usage(NULL);
845 getaddr(RTA_GENMASK, *++argv, 0, nrflags);
846 break;
847 case K_GATEWAY:
848 if (!--argc)
849 usage(NULL);
850 getaddr(RTA_GATEWAY, *++argv, 0, nrflags);
851 gateway = *argv;
852 break;
853 case K_DST:
854 if (!--argc)
855 usage(NULL);
856 if (getaddr(RTA_DST, *++argv, &hp, nrflags))
857 nrflags |= F_ISHOST;
858 dest = *argv;
859 break;
860 case K_NETMASK:
861 if (!--argc)
862 usage(NULL);
863 getaddr(RTA_NETMASK, *++argv, 0, nrflags);
864 /* FALLTHROUGH */
865 case K_NET:
866 nrflags |= F_FORCENET;
867 break;
868 case K_PREFIXLEN:
869 if (!--argc)
870 usage(NULL);
871 if (prefixlen(*++argv) == -1) {
872 nrflags &= ~F_FORCENET;
873 nrflags |= F_ISHOST;
874 } else {
875 nrflags |= F_FORCENET;
876 nrflags &= ~F_ISHOST;
877 }
878 break;
879 case K_MTU:
880 case K_HOPCOUNT:
881 case K_EXPIRE:
882 case K_RECVPIPE:
883 case K_SENDPIPE:
884 case K_SSTHRESH:
885 case K_RTT:
886 case K_RTTVAR:
887 case K_WEIGHT:
888 if (!--argc)
889 usage(NULL);
890 set_metric(*++argv, key);
891 break;
892 default:
893 usage(1+*argv);
894 }
895 } else {
896 if ((rtm_addrs & RTA_DST) == 0) {
897 dest = *argv;
898 if (getaddr(RTA_DST, *argv, &hp, nrflags))
899 nrflags |= F_ISHOST;
900 } else if ((rtm_addrs & RTA_GATEWAY) == 0) {
901 gateway = *argv;
902 getaddr(RTA_GATEWAY, *argv, &hp, nrflags);
903 } else {
904 getaddr(RTA_NETMASK, *argv, 0, nrflags);
905 nrflags |= F_FORCENET;
906 }
907 }
908 }
909
910 if (nrflags & F_FORCEHOST) {
911 nrflags |= F_ISHOST;
912#ifdef INET6
913 if (af == AF_INET6) {
914 rtm_addrs &= ~RTA_NETMASK;
915 memset((void *)&so_mask, 0, sizeof(so_mask));
916 }
917#endif
918 }
919 if (nrflags & F_FORCENET)
920 nrflags &= ~F_ISHOST;
921 flags |= RTF_UP;
922 if (nrflags & F_ISHOST)
923 flags |= RTF_HOST;
924 if ((nrflags & F_INTERFACE) == 0)
925 flags |= RTF_GATEWAY;
926 if (nrflags & F_PROXY)
927 flags |= RTF_ANNOUNCE;
928 if (dest == NULL)
929 dest = "";
930 if (gateway == NULL)
931 gateway = "";
932
933 if (TAILQ_EMPTY(&fibl_head)) {
934 error = fiboptlist_csv("default", &fibl_head);
935 if (error)
936 errx(EX_OSERR, "fiboptlist_csv failed.");
937 }
938 error = 0;
939 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
940 fl->fl_error = newroute_fib(fl->fl_num, cmd, flags);
941 if (fl->fl_error)
942 fl->fl_errno = errno;
943 error += fl->fl_error;
944 }
945 if (*cmd == 'g' || *cmd == 's')
946 exit(error);
947
948 error = 0;
949 if (!qflag) {
950 fibnum = 0;
951 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
952 if (fl->fl_error == 0)
953 fibnum++;
954 }
955 if (fibnum > 0) {
956 int firstfib = 1;
957
958 printf("%s %s %s", cmd,
959 (nrflags & F_ISHOST) ? "host" : "net", dest);
960 if (*gateway)
961 printf(": gateway %s", gateway);
962
963 if (numfibs > 1) {
964 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
965 if (fl->fl_error == 0
966 && fl->fl_num >= 0) {
967 if (firstfib) {
968 printf(" fib ");
969 firstfib = 0;
970 }
971 printf("%d", fl->fl_num);
972 if (fibnum-- > 1)
973 printf(",");
974 }
975 }
976 }
977 printf("\n");
978 }
979
980 fibnum = 0;
981 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
982 if (fl->fl_error != 0) {
983 printf("%s %s %s", cmd, (nrflags & F_ISHOST)
984 ? "host" : "net", dest);
985 if (*gateway)
986 printf(": gateway %s", gateway);
987
988 if (fl->fl_num >= 0)
989 printf(" fib %d", fl->fl_num);
990
991 switch (fl->fl_errno) {
992 case ESRCH:
993 errmsg = "not in table";
994 break;
995 case EBUSY:
996 errmsg = "entry in use";
997 break;
998 case ENOBUFS:
999 errmsg = "not enough memory";
1000 break;
1001 case EADDRINUSE:
1002 /*
1003 * handle recursion avoidance
1004 * in rt_setgate()
1005 */
1006 errmsg = "gateway uses the same route";
1007 break;
1008 case EEXIST:
1009 errmsg = "route already in table";
1010 break;
1011 default:
1012 errmsg = strerror(fl->fl_errno);
1013 break;
1014 }
1015 printf(": %s\n", errmsg);
1016 error = 1;
1017 }
1018 }
1019 }
1020 exit(error);
1021}
1022
1023static int
1024newroute_fib(int fib, char *cmd, int flags)
1025{
1026 int error;
1027
1028 error = set_sofib(fib);
1029 if (error) {
1030 warn("fib number %d is ignored", fib);
1031 return (error);
1032 }
1033
1034 error = rtmsg(*cmd, flags, fib);
1035 return (error);
1036}
1037
1038static void
1039inet_makenetandmask(u_long net, struct sockaddr_in *sin, u_long bits)
1040{
1041 u_long mask = 0;
1042 char *cp;
1043
1044 rtm_addrs |= RTA_NETMASK;
1045
1046 /*
1047 * MSB of net should be meaningful. 0/0 is exception.
1048 */
1049 if (net > 0)
1050 while ((net & 0xff000000) == 0)
1051 net <<= 8;
1052
1053 /*
1054 * If no /xx was specified we must calculate the
1055 * CIDR address.
1056 */
1057 if ((bits == 0) && (net != 0)) {
1058 u_long i, j;
1059 for(i=0,j=0xff; i<4; i++) {
1060 if (net & j) {
1061 break;
1062 }
1063 j <<= 8;
1064 }
1065 /* i holds the first non zero bit */
1066 bits = 32 - (i*8);
1067 }
1068 if (bits != 0)
1069 mask = 0xffffffff << (32 - bits);
1070
1071 sin->sin_addr.s_addr = htonl(net);
1072 sin = &so_mask.sin;
1073 sin->sin_addr.s_addr = htonl(mask);
1074 sin->sin_len = 0;
1075 sin->sin_family = 0;
1076 cp = (char *)(&sin->sin_addr + 1);
1077 while (*--cp == 0 && cp > (char *)sin)
1078 ;
1079 sin->sin_len = 1 + cp - (char *)sin;
1080}
1081
1082#ifdef INET6
1083/*
1084 * XXX the function may need more improvement...
1085 */
1086static int
1087inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen)
1088{
1089 struct in6_addr in6;
1090
1091 if (plen == NULL) {
1092 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
1093 sin6->sin6_scope_id == 0) {
1094 plen = "0";
1095 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
1096 /* aggregatable global unicast - RFC2374 */
1097 memset(&in6, 0, sizeof(in6));
1098 if (!memcmp(&sin6->sin6_addr.s6_addr[8],
1099 &in6.s6_addr[8], 8))
1100 plen = "64";
1101 }
1102 }
1103
1104 if (plen == NULL || strcmp(plen, "128") == 0)
1105 return (1);
1106 rtm_addrs |= RTA_NETMASK;
1107 prefixlen(plen);
1108 return (0);
1109}
1110#endif
1111
1112/*
1113 * Interpret an argument as a network address of some kind,
1114 * returning 1 if a host address, 0 if a network address.
1115 */
1116static int
1117getaddr(int which, char *str, struct hostent **hpp, int nrflags)
1118{
1119 sup su;
1120 struct hostent *hp;
1121 struct netent *np;
1122 u_long val;
1123 char *q;
1124 int afamily; /* local copy of af so we can change it */
1125
1126 if (af == 0) {
1127 af = AF_INET;
1128 aflen = sizeof(struct sockaddr_in);
1129 }
1130 afamily = af;
1131 rtm_addrs |= which;
1132 switch (which) {
1133 case RTA_DST:
1134 su = &so_dst;
1135 break;
1136 case RTA_GATEWAY:
1137 su = &so_gate;
1138 if (nrflags & F_INTERFACE) {
1139 struct ifaddrs *ifap, *ifa;
1140 struct sockaddr_dl *sdl = NULL;
1141
1142 if (getifaddrs(&ifap))
1143 err(1, "getifaddrs");
1144
1145 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
1146 if (ifa->ifa_addr->sa_family != AF_LINK)
1147 continue;
1148
1149 if (strcmp(str, ifa->ifa_name) != 0)
1150 continue;
1151
1152 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
1153 }
1154 /* If we found it, then use it */
1155 if (sdl != NULL) {
1156 /*
1157 * Copy is safe since we have a
1158 * sockaddr_storage member in sockunion{}.
1159 * Note that we need to copy before calling
1160 * freeifaddrs().
1161 */
1162 memcpy(&su->sdl, sdl, sdl->sdl_len);
1163 }
1164 freeifaddrs(ifap);
1165 if (sdl != NULL)
1166 return(1);
1167 }
1168 break;
1169 case RTA_NETMASK:
1170 su = &so_mask;
1171 break;
1172 case RTA_GENMASK:
1173 su = &so_genmask;
1174 break;
1175 case RTA_IFP:
1176 su = &so_ifp;
1177 afamily = AF_LINK;
1178 break;
1179 case RTA_IFA:
1180 su = &so_ifa;
1181 break;
1182 default:
1183 usage("internal error");
1184 /*NOTREACHED*/
1185 }
1186 su->sa.sa_len = aflen;
1187 su->sa.sa_family = afamily; /* cases that don't want it have left already */
1188 if (strcmp(str, "default") == 0) {
1189 /*
1190 * Default is net 0.0.0.0/0
1191 */
1192 switch (which) {
1193 case RTA_DST:
1194 forcenet++;
1195#if 0
1196 bzero(su, sizeof(*su)); /* for readability */
1197#endif
1198 getaddr(RTA_NETMASK, str, 0, nrflags);
1199 break;
1200#if 0
1201 case RTA_NETMASK:
1202 case RTA_GENMASK:
1203 bzero(su, sizeof(*su)); /* for readability */
1204#endif
1205 }
1206 return (0);
1207 }
1208 switch (afamily) {
1209#ifdef INET6
1210 case AF_INET6:
1211 {
1212 struct addrinfo hints, *res;
1213 int ecode;
1214
1215 q = NULL;
1216 if (which == RTA_DST && (q = strchr(str, '/')) != NULL)
1217 *q = '\0';
1218 memset(&hints, 0, sizeof(hints));
1219 hints.ai_family = afamily; /*AF_INET6*/
1220 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1221 ecode = getaddrinfo(str, NULL, &hints, &res);
1222 if (ecode != 0 || res->ai_family != AF_INET6 ||
1223 res->ai_addrlen != sizeof(su->sin6)) {
1224 (void) fprintf(stderr, "%s: %s\n", str,
1225 gai_strerror(ecode));
1226 exit(1);
1227 }
1228 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6));
1229 freeaddrinfo(res);
1230 if (q != NULL)
1231 *q++ = '/';
1232 if (which == RTA_DST)
1233 return (inet6_makenetandmask(&su->sin6, q));
1234 return (0);
1235 }
1236#endif /* INET6 */
1237
1238 case AF_APPLETALK:
1239 if (!atalk_aton(str, &su->sat.sat_addr))
1240 errx(EX_NOHOST, "bad address: %s", str);
1241 rtm_addrs |= RTA_NETMASK;
1242 return(forcehost || su->sat.sat_addr.s_node != 0);
1243
1244 case AF_LINK:
1245 link_addr(str, &su->sdl);
1246 return (1);
1247
1248
1249 case PF_ROUTE:
1250 su->sa.sa_len = sizeof(*su);
1251 sockaddr(str, &su->sa);
1252 return (1);
1253
1254 case AF_INET:
1255 default:
1256 break;
1257 }
1258
1259 if (hpp == NULL)
1260 hpp = &hp;
1261 *hpp = NULL;
1262
1263 q = strchr(str,'/');
1264 if (q != NULL && which == RTA_DST) {
1265 *q = '\0';
1266 if ((val = inet_network(str)) != INADDR_NONE) {
1267 inet_makenetandmask(
1268 val, &su->sin, strtoul(q+1, 0, 0));
1269 return (0);
1270 }
1271 *q = '/';
1272 }
1273 if ((which != RTA_DST || forcenet == 0) &&
1274 inet_aton(str, &su->sin.sin_addr)) {
1275 val = su->sin.sin_addr.s_addr;
1276 if (which != RTA_DST || forcehost ||
1277 inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
1278 return (1);
1279 else {
1280 val = ntohl(val);
1281 goto netdone;
1282 }
1283 }
1284 if (which == RTA_DST && forcehost == 0 &&
1285 ((val = inet_network(str)) != INADDR_NONE ||
1286 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) {
1287netdone:
1288 inet_makenetandmask(val, &su->sin, 0);
1289 return (0);
1290 }
1291 hp = gethostbyname(str);
1292 if (hp != NULL) {
1293 *hpp = hp;
1294 su->sin.sin_family = hp->h_addrtype;
1295 memmove((char *)&su->sin.sin_addr, hp->h_addr,
1296 MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr)));
1297 return (1);
1298 }
1299 errx(EX_NOHOST, "bad address: %s", str);
1300}
1301
1302static int
1303prefixlen(const char *str)
1304{
1305 int len = atoi(str), q, r;
1306 int max;
1307 char *p;
1308
1309 rtm_addrs |= RTA_NETMASK;
1310 switch (af) {
1311#ifdef INET6
1312 case AF_INET6:
1313 max = 128;
1314 p = (char *)&so_mask.sin6.sin6_addr;
1315 break;
1316#endif
1317 case AF_INET:
1318 max = 32;
1319 p = (char *)&so_mask.sin.sin_addr;
1320 break;
1321 default:
1322 fprintf(stderr, "prefixlen not supported in this af\n");
1323 exit(1);
1324 }
1325
1326 if (len < 0 || max < len) {
1327 fprintf(stderr, "%s: bad value\n", str);
1328 exit(1);
1329 }
1330
1331 q = len >> 3;
1332 r = len & 7;
1333 so_mask.sa.sa_family = af;
1334 so_mask.sa.sa_len = aflen;
1335 memset((void *)p, 0, max / 8);
1336 if (q > 0)
1337 memset((void *)p, 0xff, q);
1338 if (r > 0)
1339 *((u_char *)p + q) = (0xff00 >> r) & 0xff;
1340 if (len == max)
1341 return (-1);
1342 else
1343 return (len);
1344}
1345
1346static void
1347interfaces(void)
1348{
1349 size_t needed;
1350 int mib[6];
1351 char *buf, *lim, *next, count = 0;
1352 struct rt_msghdr *rtm;
1353
1354retry2:
1355 mib[0] = CTL_NET;
1356 mib[1] = PF_ROUTE;
1357 mib[2] = 0; /* protocol */
1358 mib[3] = 0; /* wildcard address family */
1359 mib[4] = NET_RT_IFLIST;
1360 mib[5] = 0; /* no flags */
1361 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
1362 err(EX_OSERR, "route-sysctl-estimate");
1363 if ((buf = malloc(needed)) == NULL)
1364 errx(EX_OSERR, "malloc failed");
1365 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
1366 if (errno == ENOMEM && count++ < 10) {
1367 warnx("Routing table grew, retrying");
1368 sleep(1);
1369 free(buf);
1370 goto retry2;
1371 }
1372 err(EX_OSERR, "actual retrieval of interface table");
1373 }
1374 lim = buf + needed;
1375 for (next = buf; next < lim; next += rtm->rtm_msglen) {
1376 rtm = (struct rt_msghdr *)next;
1377 print_rtmsg(rtm, rtm->rtm_msglen);
1378 }
1379}
1380
1381static void
1382monitor(int argc, char *argv[])
1383{
1384 int n, fib, error;
1385 char msg[2048], *endptr;
1386
1387 fib = defaultfib;
1388 while (argc > 1) {
1389 argc--;
1390 argv++;
1391 if (**argv != '-')
1392 usage(*argv);
1393 switch (keyword(*argv + 1)) {
1394 case K_FIB:
1395 if (!--argc)
1396 usage(*argv);
1397 errno = 0;
1398 fib = strtol(*++argv, &endptr, 0);
1399 if (errno == 0) {
1400 if (*endptr != '\0' ||
1401 fib < 0 ||
1402 (numfibs != -1 && fib > numfibs - 1))
1403 errno = EINVAL;
1404 }
1405 if (errno)
1406 errx(EX_USAGE, "invalid fib number: %s", *argv);
1407 break;
1408 default:
1409 usage(*argv);
1410 }
1411 }
1412 error = set_sofib(fib);
1413 if (error)
1414 errx(EX_USAGE, "invalid fib number: %d", fib);
1415
1416 verbose = 1;
1417 if (debugonly) {
1418 interfaces();
1419 exit(0);
1420 }
1421 for (;;) {
1422 time_t now;
1423 n = read(s, msg, 2048);
1424 now = time(NULL);
1425 (void) printf("\ngot message of size %d on %s", n, ctime(&now));
1426 print_rtmsg((struct rt_msghdr *)msg, n);
1427 }
1428}
1429
1430struct {
1431 struct rt_msghdr m_rtm;
1432 char m_space[512];
1433} m_rtmsg;
1434
1435static int
1436rtmsg(int cmd, int flags, int fib)
1437{
1438 static int seq;
1439 int rlen;
1440 char *cp = m_rtmsg.m_space;
1441 int l;
1442
1443#define NEXTADDR(w, u) \
1444 if (rtm_addrs & (w)) {\
1445 l = SA_SIZE(&(u.sa)); memmove(cp, &(u), l); cp += l;\
1446 if (verbose) sodump(&(u),#u);\
1447 }
1448
1449 errno = 0;
1450 memset(&m_rtmsg, 0, sizeof(m_rtmsg));
1451 if (cmd == 'a')
1452 cmd = RTM_ADD;
1453 else if (cmd == 'c')
1454 cmd = RTM_CHANGE;
1455 else if (cmd == 'g' || cmd == 's') {
1456 cmd = RTM_GET;
1457 if (so_ifp.sa.sa_family == 0) {
1458 so_ifp.sa.sa_family = AF_LINK;
1459 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
1460 rtm_addrs |= RTA_IFP;
1461 }
1462 } else
1463 cmd = RTM_DELETE;
1464#define rtm m_rtmsg.m_rtm
1465 rtm.rtm_type = cmd;
1466 rtm.rtm_flags = flags;
1467 rtm.rtm_version = RTM_VERSION;
1468 rtm.rtm_seq = ++seq;
1469 rtm.rtm_addrs = rtm_addrs;
1470 rtm.rtm_rmx = rt_metrics;
1471 rtm.rtm_inits = rtm_inits;
1472
1473 if (rtm_addrs & RTA_NETMASK)
1474 mask_addr();
1475 NEXTADDR(RTA_DST, so_dst);
1476 NEXTADDR(RTA_GATEWAY, so_gate);
1477 NEXTADDR(RTA_NETMASK, so_mask);
1478 NEXTADDR(RTA_GENMASK, so_genmask);
1479 NEXTADDR(RTA_IFP, so_ifp);
1480 NEXTADDR(RTA_IFA, so_ifa);
1481 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
1482 if (verbose)
1483 print_rtmsg(&rtm, l);
1484 if (debugonly)
1485 return (0);
1486 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
1487 if (errno == EPERM)
1488 err(1, "writing to routing socket");
1489 warn("writing to routing socket");
1490 return (-1);
1491 }
1492 if (cmd == RTM_GET) {
1493 do {
1494 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
1495 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
1496 if (l < 0)
1497 warn("read from routing socket");
1498 else
1499 print_getmsg(&rtm, l, fib);
1500 }
1501#undef rtm
1502 return (0);
1503}
1504
1505static void
1506mask_addr(void)
1507{
1508 int olen = so_mask.sa.sa_len;
1509 char *cp1 = olen + (char *)&so_mask, *cp2;
1510
1511 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; )
1512 if (*--cp1 != 0) {
1513 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask;
1514 break;
1515 }
1516 if ((rtm_addrs & RTA_DST) == 0)
1517 return;
1518 switch (so_dst.sa.sa_family) {
1519 case AF_INET:
1520#ifdef INET6
1521 case AF_INET6:
1522#endif
1523 case AF_APPLETALK:
1524 case 0:
1525 return;
1526 }
1527 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst;
1528 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst;
1529 while (cp2 > cp1)
1530 *--cp2 = 0;
1531 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask;
1532 while (cp1 > so_dst.sa.sa_data)
1533 *--cp1 &= *--cp2;
1534}
1535
1536const char *msgtypes[] = {
1537 "",
1538 "RTM_ADD: Add Route",
1539 "RTM_DELETE: Delete Route",
1540 "RTM_CHANGE: Change Metrics or flags",
1541 "RTM_GET: Report Metrics",
1542 "RTM_LOSING: Kernel Suspects Partitioning",
1543 "RTM_REDIRECT: Told to use different route",
1544 "RTM_MISS: Lookup failed on this address",
1545 "RTM_LOCK: fix specified metrics",
1546 "RTM_OLDADD: caused by SIOCADDRT",
1547 "RTM_OLDDEL: caused by SIOCDELRT",
1548 "RTM_RESOLVE: Route created by cloning",
1549 "RTM_NEWADDR: address being added to iface",
1550 "RTM_DELADDR: address being removed from iface",
1551 "RTM_IFINFO: iface status change",
1552 "RTM_NEWMADDR: new multicast group membership on iface",
1553 "RTM_DELMADDR: multicast group membership removed from iface",
1554 "RTM_IFANNOUNCE: interface arrival/departure",
1555 "RTM_IEEE80211: IEEE 802.11 wireless event",
1556};
1557
1558char metricnames[] =
1559"\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire"
1560"\1mtu";
1561char routeflags[] =
1562"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE"
1563"\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE"
1564"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3"
1565"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY";
1566char ifnetflags[] =
1567"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1568"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1569"\017LINK2\020MULTICAST";
1570char addrnames[] =
1571"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
1572
1573static const char errfmt[] =
1574"\n%s: truncated route message, only %zu bytes left\n";
1575
1576static void
1577print_rtmsg(struct rt_msghdr *rtm, size_t msglen)
1578{
1579 struct if_msghdr *ifm;
1580 struct ifa_msghdr *ifam;
1581#ifdef RTM_NEWMADDR
1582 struct ifma_msghdr *ifmam;
1583#endif
1584 struct if_announcemsghdr *ifan;
1585 const char *state;
1586
1587 if (verbose == 0)
1588 return;
1589 if (rtm->rtm_version != RTM_VERSION) {
1590 (void) printf("routing message version %d not understood\n",
1591 rtm->rtm_version);
1592 return;
1593 }
1594 if (rtm->rtm_type < sizeof(msgtypes) / sizeof(msgtypes[0]))
1595 (void)printf("%s: ", msgtypes[rtm->rtm_type]);
1596 else
1597 (void)printf("unknown type %d: ", rtm->rtm_type);
1598 (void)printf("len %d, ", rtm->rtm_msglen);
1599
1600#define REQUIRE(x) do { \
1601 if (msglen < sizeof(x)) \
1602 goto badlen; \
1603 else \
1604 msglen -= sizeof(x); \
1605 } while (0)
1606
1607 switch (rtm->rtm_type) {
1608 case RTM_IFINFO:
1609 REQUIRE(struct if_msghdr);
1610 ifm = (struct if_msghdr *)rtm;
1611 (void) printf("if# %d, ", ifm->ifm_index);
1612 switch (ifm->ifm_data.ifi_link_state) {
1613 case LINK_STATE_DOWN:
1614 state = "down";
1615 break;
1616 case LINK_STATE_UP:
1617 state = "up";
1618 break;
1619 default:
1620 state = "unknown";
1621 break;
1622 }
1623 (void) printf("link: %s, flags:", state);
1624 bprintf(stdout, ifm->ifm_flags, ifnetflags);
1625 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs, msglen);
1626 break;
1627 case RTM_NEWADDR:
1628 case RTM_DELADDR:
1629 REQUIRE(struct ifa_msghdr);
1630 ifam = (struct ifa_msghdr *)rtm;
1631 (void) printf("metric %d, flags:", ifam->ifam_metric);
1632 bprintf(stdout, ifam->ifam_flags, routeflags);
1633 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs, msglen);
1634 break;
1635#ifdef RTM_NEWMADDR
1636 case RTM_NEWMADDR:
1637 case RTM_DELMADDR:
1638 REQUIRE(struct ifma_msghdr);
1639 ifmam = (struct ifma_msghdr *)rtm;
1640 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs, msglen);
1641 break;
1642#endif
1643 case RTM_IFANNOUNCE:
1644 REQUIRE(struct if_announcemsghdr);
1645 ifan = (struct if_announcemsghdr *)rtm;
1646 (void) printf("if# %d, what: ", ifan->ifan_index);
1647 switch (ifan->ifan_what) {
1648 case IFAN_ARRIVAL:
1649 printf("arrival");
1650 break;
1651 case IFAN_DEPARTURE:
1652 printf("departure");
1653 break;
1654 default:
1655 printf("#%d", ifan->ifan_what);
1656 break;
1657 }
1658 printf("\n");
1659 fflush(stdout);
1660 break;
1661
1662 default:
1663 (void) printf("pid: %ld, seq %d, errno %d, flags:",
1664 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1665 bprintf(stdout, rtm->rtm_flags, routeflags);
1666 pmsg_common(rtm, msglen);
1667 }
1668
1669 return;
1670
1671badlen:
1672 (void)printf(errfmt, __func__, msglen);
1673#undef REQUIRE
1674}
1675
1676static void
1677print_getmsg(struct rt_msghdr *rtm, int msglen, int fib)
1678{
1679 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
1680 struct sockaddr_dl *ifp = NULL;
1681 struct sockaddr *sa;
1682 char *cp;
1683 int i;
1684
1685 (void) printf(" route to: %s\n",
1686 routename((struct sockaddr *)&so_dst));
1687 if (rtm->rtm_version != RTM_VERSION) {
1688 warnx("routing message version %d not understood",
1689 rtm->rtm_version);
1690 return;
1691 }
1692 if (rtm->rtm_msglen > msglen) {
1693 warnx("message length mismatch, in packet %d, returned %d",
1694 rtm->rtm_msglen, msglen);
1695 }
1696 if (rtm->rtm_errno) {
1697 errno = rtm->rtm_errno;
1698 warn("message indicates error %d", errno);
1699 return;
1700 }
1701 cp = ((char *)(rtm + 1));
1702 if (rtm->rtm_addrs)
1703 for (i = 1; i; i <<= 1)
1704 if (i & rtm->rtm_addrs) {
1705 sa = (struct sockaddr *)cp;
1706 switch (i) {
1707 case RTA_DST:
1708 dst = sa;
1709 break;
1710 case RTA_GATEWAY:
1711 gate = sa;
1712 break;
1713 case RTA_NETMASK:
1714 mask = sa;
1715 break;
1716 case RTA_IFP:
1717 if (sa->sa_family == AF_LINK &&
1718 ((struct sockaddr_dl *)sa)->sdl_nlen)
1719 ifp = (struct sockaddr_dl *)sa;
1720 break;
1721 }
1722 cp += SA_SIZE(sa);
1723 }
1724 if (dst && mask)
1725 mask->sa_family = dst->sa_family; /* XXX */
1726 if (dst)
1727 (void)printf("destination: %s\n", routename(dst));
1728 if (mask) {
1729 int savenflag = nflag;
1730
1731 nflag = 1;
1732 (void)printf(" mask: %s\n", routename(mask));
1733 nflag = savenflag;
1734 }
1735 if (gate && rtm->rtm_flags & RTF_GATEWAY)
1736 (void)printf(" gateway: %s\n", routename(gate));
1737 if (fib >= 0)
1738 (void)printf(" fib: %u\n", (unsigned int)fib);
1739 if (ifp)
1740 (void)printf(" interface: %.*s\n",
1741 ifp->sdl_nlen, ifp->sdl_data);
1742 (void)printf(" flags: ");
1743 bprintf(stdout, rtm->rtm_flags, routeflags);
1744
1745#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1746#define msec(u) (((u) + 500) / 1000) /* usec to msec */
1747
1748 (void) printf("\n%s\n", "\
1749 recvpipe sendpipe ssthresh rtt,msec mtu weight expire");
1750 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1751 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1752 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1753 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1754 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
1755 printf("%8ld%c ", rtm->rtm_rmx.rmx_weight, lock(WEIGHT));
1756 if (rtm->rtm_rmx.rmx_expire)
1757 rtm->rtm_rmx.rmx_expire -= time(0);
1758 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
1759#undef lock
1760#undef msec
1761#define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
1762 if (verbose)
1763 pmsg_common(rtm, msglen);
1764 else if (rtm->rtm_addrs &~ RTA_IGN) {
1765 (void) printf("sockaddrs: ");
1766 bprintf(stdout, rtm->rtm_addrs, addrnames);
1767 putchar('\n');
1768 }
1769#undef RTA_IGN
1770}
1771
1772static void
1773pmsg_common(struct rt_msghdr *rtm, size_t msglen)
1774{
1775 (void) printf("\nlocks: ");
1776 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
1777 (void) printf(" inits: ");
1778 bprintf(stdout, rtm->rtm_inits, metricnames);
1779 if (msglen > sizeof(struct rt_msghdr))
1780 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs,
1781 msglen - sizeof(struct rt_msghdr));
1782 else
1783 (void) fflush(stdout);
1784}
1785
1786static void
1787pmsg_addrs(char *cp, int addrs, size_t len)
1788{
1789 struct sockaddr *sa;
1790 int i;
1791
1792 if (addrs == 0) {
1793 (void) putchar('\n');
1794 return;
1795 }
1796 (void) printf("\nsockaddrs: ");
1797 bprintf(stdout, addrs, addrnames);
1798 (void) putchar('\n');
1799 for (i = 1; i != 0; i <<= 1)
1800 if (i & addrs) {
1801 sa = (struct sockaddr *)cp;
1802 if (len == 0 || len < SA_SIZE(sa)) {
1803 (void) printf(errfmt, __func__, len);
1804 break;
1805 }
1806 (void) printf(" %s", routename(sa));
1807 len -= SA_SIZE(sa);
1808 cp += SA_SIZE(sa);
1809 }
1810 (void) putchar('\n');
1811 (void) fflush(stdout);
1812}
1813
1814static void
1815bprintf(FILE *fp, int b, u_char *str)
1816{
1817 int i;
1818 int gotsome = 0;
1819
1820 if (b == 0)
1821 return;
1822 while ((i = *str++) != 0) {
1823 if (b & (1 << (i-1))) {
1824 if (gotsome == 0)
1825 i = '<';
1826 else
1827 i = ',';
1828 (void) putc(i, fp);
1829 gotsome = 1;
1830 for (; (i = *str) > 32; str++)
1831 (void) putc(i, fp);
1832 } else
1833 while (*str > 32)
1834 str++;
1835 }
1836 if (gotsome)
1837 (void) putc('>', fp);
1838}
1839
1840int
1841keyword(const char *cp)
1842{
1843 struct keytab *kt = keywords;
1844
1845 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0)
1846 kt++;
1847 return (kt->kt_i);
1848}
1849
1850static void
1851sodump(sup su, const char *which)
1852{
1853 switch (su->sa.sa_family) {
1854 case AF_LINK:
1855 (void) printf("%s: link %s; ",
1856 which, link_ntoa(&su->sdl));
1857 break;
1858 case AF_INET:
1859 (void) printf("%s: inet %s; ",
1860 which, inet_ntoa(su->sin.sin_addr));
1861 break;
1862 case AF_APPLETALK:
1863 (void) printf("%s: atalk %s; ",
1864 which, atalk_ntoa(su->sat.sat_addr));
1865 break;
1866 }
1867 (void) fflush(stdout);
1868}
1869
1870/* States*/
1871#define VIRGIN 0
1872#define GOTONE 1
1873#define GOTTWO 2
1874/* Inputs */
1875#define DIGIT (4*0)
1876#define END (4*1)
1877#define DELIM (4*2)
1878
1879static void
1880sockaddr(char *addr, struct sockaddr *sa)
1881{
1882 char *cp = (char *)sa;
1883 int size = sa->sa_len;
1884 char *cplim = cp + size;
1885 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
1886
1887 memset(cp, 0, size);
1888 cp++;
1889 do {
1890 if ((*addr >= '0') && (*addr <= '9')) {
1891 new = *addr - '0';
1892 } else if ((*addr >= 'a') && (*addr <= 'f')) {
1893 new = *addr - 'a' + 10;
1894 } else if ((*addr >= 'A') && (*addr <= 'F')) {
1895 new = *addr - 'A' + 10;
1896 } else if (*addr == '\0')
1897 state |= END;
1898 else
1899 state |= DELIM;
1900 addr++;
1901 switch (state /* | INPUT */) {
1902 case GOTTWO | DIGIT:
1903 *cp++ = byte; /*FALLTHROUGH*/
1904 case VIRGIN | DIGIT:
1905 state = GOTONE; byte = new; continue;
1906 case GOTONE | DIGIT:
1907 state = GOTTWO; byte = new + (byte << 4); continue;
1908 default: /* | DELIM */
1909 state = VIRGIN; *cp++ = byte; byte = 0; continue;
1910 case GOTONE | END:
1911 case GOTTWO | END:
1912 *cp++ = byte; /* FALLTHROUGH */
1913 case VIRGIN | END:
1914 break;
1915 }
1916 break;
1917 } while (cp < cplim);
1918 sa->sa_len = cp - (char *)sa;
1919}
1920
1921static int
1922atalk_aton(const char *text, struct at_addr *addr)
1923{
1924 u_int net, node;
1925
1926 if (sscanf(text, "%u.%u", &net, &node) != 2
1927 || net > 0xffff || node > 0xff)
1928 return(0);
1929 addr->s_net = htons(net);
1930 addr->s_node = node;
1931 return(1);
1932}
1933
1934static char *
1935atalk_ntoa(struct at_addr at)
1936{
1937 static char buf[20];
1938
1939 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);
1940 return(buf);
1941}
2 * Copyright (c) 1983, 1989, 1991, 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 * 4. 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
30#ifndef lint
31static const char copyright[] =
32"@(#) Copyright (c) 1983, 1989, 1991, 1993\n\
33 The Regents of the University of California. All rights reserved.\n";
34#endif /* not lint */
35
36#ifndef lint
37#if 0
38static char sccsid[] = "@(#)route.c 8.6 (Berkeley) 4/28/95";
39#endif
40#endif /* not lint */
41
42#include <sys/cdefs.h>
43__FBSDID("$FreeBSD: head/sbin/route/route.c 251581 2013-06-09 17:40:06Z hrs $");
44
45#include <sys/param.h>
46#include <sys/file.h>
47#include <sys/socket.h>
48#include <sys/ioctl.h>
49#include <sys/sysctl.h>
50#include <sys/types.h>
51#include <sys/queue.h>
52
53#include <net/if.h>
54#include <net/route.h>
55#include <net/if_dl.h>
56#include <netinet/in.h>
57#include <netinet/if_ether.h>
58#include <netatalk/at.h>
59#include <arpa/inet.h>
60#include <netdb.h>
61
62#include <ctype.h>
63#include <err.h>
64#include <errno.h>
65#include <paths.h>
66#include <stdio.h>
67#include <stdlib.h>
68#include <string.h>
69#include <sysexits.h>
70#include <unistd.h>
71#include <ifaddrs.h>
72
73struct keytab {
74 const char *kt_cp;
75 int kt_i;
76} keywords[] = {
77#include "keywords.h"
78 {0, 0}
79};
80
81union sockunion {
82 struct sockaddr sa;
83 struct sockaddr_in sin;
84#ifdef INET6
85 struct sockaddr_in6 sin6;
86#endif
87 struct sockaddr_at sat;
88 struct sockaddr_dl sdl;
89 struct sockaddr_storage ss; /* added to avoid memory overrun */
90} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp;
91
92typedef union sockunion *sup;
93int pid, rtm_addrs;
94int s;
95int forcehost, forcenet, doflush, nflag, af, qflag, tflag;
96int verbose, aflen = sizeof (struct sockaddr_in);
97int locking, lockrest, debugonly;
98struct rt_metrics rt_metrics;
99u_long rtm_inits;
100uid_t uid;
101static int defaultfib;
102static int numfibs;
103
104static int atalk_aton(const char *, struct at_addr *);
105static char *atalk_ntoa(struct at_addr);
106static void bprintf(FILE *, int, u_char *);
107static void flushroutes(int argc, char *argv[]);
108static int flushroutes_fib(int);
109static int getaddr(int, char *, struct hostent **, int);
110static int keyword(const char *);
111static void inet_makenetandmask(u_long, struct sockaddr_in *, u_long);
112#ifdef INET6
113static int inet6_makenetandmask(struct sockaddr_in6 *, const char *);
114#endif
115static void interfaces(void);
116static void mask_addr(void);
117static void monitor(int, char*[]);
118static const char *netname(struct sockaddr *);
119static void newroute(int, char **);
120static int newroute_fib(int, char *, int);
121static void pmsg_addrs(char *, int, size_t);
122static void pmsg_common(struct rt_msghdr *, size_t);
123static int prefixlen(const char *);
124static void print_getmsg(struct rt_msghdr *, int, int);
125static void print_rtmsg(struct rt_msghdr *, size_t);
126static const char *routename(struct sockaddr *);
127static int rtmsg(int, int, int);
128static void set_metric(char *, int);
129static int set_sofib(int);
130static int set_procfib(int);
131static void sockaddr(char *, struct sockaddr *);
132static void sodump(sup, const char *);
133extern char *iso_ntoa(void);
134
135struct fibl {
136 TAILQ_ENTRY(fibl) fl_next;
137
138 int fl_num;
139 int fl_error;
140 int fl_errno;
141};
142TAILQ_HEAD(fibl_head_t, fibl) fibl_head;
143
144static int fiboptlist_csv(const char *, struct fibl_head_t *);
145static int fiboptlist_range(const char *, struct fibl_head_t *);
146
147static void usage(const char *) __dead2;
148
149void
150usage(const char *cp)
151{
152 if (cp != NULL)
153 warnx("bad keyword: %s", cp);
154 (void) fprintf(stderr,
155 "usage: route [-dnqtv] command [[modifiers] args]\n");
156 exit(EX_USAGE);
157 /* NOTREACHED */
158}
159
160int
161main(int argc, char **argv)
162{
163 int ch;
164 size_t len;
165
166 if (argc < 2)
167 usage(NULL);
168
169 while ((ch = getopt(argc, argv, "nqdtv")) != -1)
170 switch(ch) {
171 case 'n':
172 nflag = 1;
173 break;
174 case 'q':
175 qflag = 1;
176 break;
177 case 'v':
178 verbose = 1;
179 break;
180 case 't':
181 tflag = 1;
182 break;
183 case 'd':
184 debugonly = 1;
185 break;
186 case '?':
187 default:
188 usage(NULL);
189 }
190 argc -= optind;
191 argv += optind;
192
193 pid = getpid();
194 uid = geteuid();
195 if (tflag)
196 s = open(_PATH_DEVNULL, O_WRONLY, 0);
197 else
198 s = socket(PF_ROUTE, SOCK_RAW, 0);
199 if (s < 0)
200 err(EX_OSERR, "socket");
201
202 len = sizeof(numfibs);
203 if (sysctlbyname("net.fibs", (void *)&numfibs, &len, NULL, 0) == -1)
204 numfibs = -1;
205
206 len = sizeof(defaultfib);
207 if (numfibs != -1 &&
208 sysctlbyname("net.my_fibnum", (void *)&defaultfib, &len, NULL,
209 0) == -1)
210 defaultfib = -1;
211
212 if (*argv != NULL)
213 switch (keyword(*argv)) {
214 case K_GET:
215 case K_SHOW:
216 uid = 0;
217 /* FALLTHROUGH */
218
219 case K_CHANGE:
220 case K_ADD:
221 case K_DEL:
222 case K_DELETE:
223 newroute(argc, argv);
224 /* NOTREACHED */
225
226 case K_MONITOR:
227 monitor(argc, argv);
228 /* NOTREACHED */
229
230 case K_FLUSH:
231 flushroutes(argc, argv);
232 exit(0);
233 /* NOTREACHED */
234 }
235 usage(*argv);
236 /* NOTREACHED */
237}
238
239static int
240set_sofib(int fib)
241{
242
243 if (fib < 0)
244 return (0);
245 return (setsockopt(s, SOL_SOCKET, SO_SETFIB, (void *)&fib,
246 sizeof(fib)));
247}
248
249static int
250set_procfib(int fib)
251{
252
253 if (fib < 0)
254 return (0);
255 return (setfib(fib));
256}
257
258static int
259fiboptlist_range(const char *arg, struct fibl_head_t *flh)
260{
261 struct fibl *fl;
262 char *str0, *str, *token, *endptr;
263 int fib[2], i, error;
264
265 str0 = str = strdup(arg);
266 error = 0;
267 i = 0;
268 while ((token = strsep(&str, "-")) != NULL) {
269 switch (i) {
270 case 0:
271 case 1:
272 errno = 0;
273 fib[i] = strtol(token, &endptr, 0);
274 if (errno == 0) {
275 if (*endptr != '\0' ||
276 fib[i] < 0 ||
277 (numfibs != -1 && fib[i] > numfibs - 1))
278 errno = EINVAL;
279 }
280 if (errno)
281 error = 1;
282 break;
283 default:
284 error = 1;
285 }
286 if (error)
287 goto fiboptlist_range_ret;
288 i++;
289 }
290 if (fib[0] >= fib[1]) {
291 error = 1;
292 goto fiboptlist_range_ret;
293 }
294 for (i = fib[0]; i <= fib[1]; i++) {
295 fl = calloc(1, sizeof(*fl));
296 if (fl == NULL) {
297 error = 1;
298 goto fiboptlist_range_ret;
299 }
300 fl->fl_num = i;
301 TAILQ_INSERT_TAIL(flh, fl, fl_next);
302 }
303fiboptlist_range_ret:
304 free(str0);
305 return (error);
306}
307
308#define ALLSTRLEN 64
309static int
310fiboptlist_csv(const char *arg, struct fibl_head_t *flh)
311{
312 struct fibl *fl;
313 char *str0, *str, *token, *endptr;
314 int fib, error;
315
316 if (strcmp("all", arg) == 0) {
317 str = calloc(1, ALLSTRLEN);
318 if (str == NULL) {
319 error = 1;
320 goto fiboptlist_csv_ret;
321 }
322 if (numfibs > 1)
323 snprintf(str, ALLSTRLEN - 1, "%d-%d", 0, numfibs - 1);
324 else
325 snprintf(str, ALLSTRLEN - 1, "%d", 0);
326 } else if (strcmp("default", arg) == 0) {
327 str0 = str = calloc(1, ALLSTRLEN);
328 if (str == NULL) {
329 error = 1;
330 goto fiboptlist_csv_ret;
331 }
332 snprintf(str, ALLSTRLEN - 1, "%d", defaultfib);
333 } else
334 str0 = str = strdup(arg);
335
336 error = 0;
337 while ((token = strsep(&str, ",")) != NULL) {
338 if (*token != '-' && strchr(token, '-') != NULL) {
339 error = fiboptlist_range(token, flh);
340 if (error)
341 goto fiboptlist_csv_ret;
342 } else {
343 errno = 0;
344 fib = strtol(token, &endptr, 0);
345 if (errno == 0) {
346 if (*endptr != '\0' ||
347 fib < 0 ||
348 (numfibs != -1 && fib > numfibs - 1))
349 errno = EINVAL;
350 }
351 if (errno) {
352 error = 1;
353 goto fiboptlist_csv_ret;
354 }
355 fl = calloc(1, sizeof(*fl));
356 if (fl == NULL) {
357 error = 1;
358 goto fiboptlist_csv_ret;
359 }
360 fl->fl_num = fib;
361 TAILQ_INSERT_TAIL(flh, fl, fl_next);
362 }
363 }
364fiboptlist_csv_ret:
365 free(str0);
366 return (error);
367}
368
369/*
370 * Purge all entries in the routing tables not
371 * associated with network interfaces.
372 */
373static void
374flushroutes(int argc, char *argv[])
375{
376 struct fibl *fl;
377 int error;
378
379 if (uid != 0 && !debugonly && !tflag) {
380 errx(EX_NOPERM, "must be root to alter routing table");
381 }
382 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
383
384 TAILQ_INIT(&fibl_head);
385 while (argc > 1) {
386 argc--;
387 argv++;
388 if (**argv != '-')
389 usage(*argv);
390 switch (keyword(*argv + 1)) {
391 case K_INET:
392 af = AF_INET;
393 break;
394#ifdef INET6
395 case K_INET6:
396 af = AF_INET6;
397 break;
398#endif
399 case K_ATALK:
400 af = AF_APPLETALK;
401 break;
402 case K_LINK:
403 af = AF_LINK;
404 break;
405 case K_FIB:
406 if (!--argc)
407 usage(*argv);
408 error = fiboptlist_csv(*++argv, &fibl_head);
409 if (error)
410 errx(EX_USAGE, "invalid fib number: %s", *argv);
411 break;
412 default:
413 usage(*argv);
414 }
415 }
416 if (TAILQ_EMPTY(&fibl_head)) {
417 error = fiboptlist_csv("default", &fibl_head);
418 if (error)
419 errx(EX_OSERR, "fiboptlist_csv failed.");
420 }
421 TAILQ_FOREACH(fl, &fibl_head, fl_next)
422 flushroutes_fib(fl->fl_num);
423}
424
425static int
426flushroutes_fib(int fib)
427{
428 struct rt_msghdr *rtm;
429 size_t needed;
430 char *buf, *next, *lim;
431 int mib[6], rlen, seqno, count = 0;
432 int error;
433
434 error = set_sofib(fib);
435 error += set_procfib(fib);
436 if (error) {
437 warn("fib number %d is ignored", fib);
438 return (error);
439 }
440
441retry:
442 mib[0] = CTL_NET;
443 mib[1] = PF_ROUTE;
444 mib[2] = 0; /* protocol */
445 mib[3] = 0; /* wildcard address family */
446 mib[4] = NET_RT_DUMP;
447 mib[5] = 0; /* no flags */
448 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
449 err(EX_OSERR, "route-sysctl-estimate");
450 if ((buf = malloc(needed)) == NULL)
451 errx(EX_OSERR, "malloc failed");
452 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
453 if (errno == ENOMEM && count++ < 10) {
454 warnx("Routing table grew, retrying");
455 sleep(1);
456 free(buf);
457 goto retry;
458 }
459 err(EX_OSERR, "route-sysctl-get");
460 }
461 lim = buf + needed;
462 if (verbose)
463 (void) printf("Examining routing table from sysctl\n");
464 seqno = 0; /* ??? */
465 for (next = buf; next < lim; next += rtm->rtm_msglen) {
466 rtm = (struct rt_msghdr *)next;
467 if (verbose)
468 print_rtmsg(rtm, rtm->rtm_msglen);
469 if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
470 continue;
471 if (af != 0) {
472 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
473
474 if (sa->sa_family != af)
475 continue;
476 }
477 if (debugonly)
478 continue;
479 rtm->rtm_type = RTM_DELETE;
480 rtm->rtm_seq = seqno;
481 rlen = write(s, next, rtm->rtm_msglen);
482 if (rlen < 0 && errno == EPERM)
483 err(1, "write to routing socket");
484 if (rlen < (int)rtm->rtm_msglen) {
485 warn("write to routing socket");
486 (void) printf("got only %d for rlen\n", rlen);
487 free(buf);
488 goto retry;
489 break;
490 }
491 seqno++;
492 if (qflag)
493 continue;
494 if (verbose)
495 print_rtmsg(rtm, rlen);
496 else {
497 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
498
499 printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
500 routename(sa) : netname(sa));
501 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa);
502 printf("%-20.20s ", routename(sa));
503 if (fib >= 0)
504 printf("-fib %-3d ", fib);
505 printf("done\n");
506 }
507 }
508 return (error);
509}
510
511const char *
512routename(struct sockaddr *sa)
513{
514 const char *cp;
515 static char line[MAXHOSTNAMELEN + 1];
516 struct hostent *hp;
517 static char domain[MAXHOSTNAMELEN + 1];
518 static int first = 1, n;
519
520 if (first) {
521 first = 0;
522 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
523 (cp = strchr(domain, '.'))) {
524 domain[MAXHOSTNAMELEN] = '\0';
525 (void) strcpy(domain, cp + 1);
526 } else
527 domain[0] = 0;
528 }
529
530 if (sa->sa_len == 0)
531 strcpy(line, "default");
532 else switch (sa->sa_family) {
533
534 case AF_INET:
535 { struct in_addr in;
536 in = ((struct sockaddr_in *)sa)->sin_addr;
537
538 cp = NULL;
539 if (in.s_addr == INADDR_ANY || sa->sa_len < 4)
540 cp = "default";
541 if (cp == NULL && !nflag) {
542 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
543 AF_INET);
544 if (hp != NULL) {
545 char *cptr;
546 cptr = strchr(hp->h_name, '.');
547 if (cptr != NULL &&
548 strcmp(cptr + 1, domain) == 0)
549 *cptr = '\0';
550 cp = hp->h_name;
551 }
552 }
553 if (cp != NULL) {
554 strncpy(line, cp, sizeof(line) - 1);
555 line[sizeof(line) - 1] = '\0';
556 } else
557 (void) sprintf(line, "%s", inet_ntoa(in));
558 break;
559 }
560
561#ifdef INET6
562 case AF_INET6:
563 {
564 struct sockaddr_in6 sin6; /* use static var for safety */
565 int niflags = 0;
566
567 memset(&sin6, 0, sizeof(sin6));
568 memcpy(&sin6, sa, sa->sa_len);
569 sin6.sin6_len = sizeof(struct sockaddr_in6);
570 sin6.sin6_family = AF_INET6;
571 if (nflag)
572 niflags |= NI_NUMERICHOST;
573 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
574 line, sizeof(line), NULL, 0, niflags) != 0)
575 strncpy(line, "invalid", sizeof(line));
576
577 return(line);
578 }
579#endif
580
581 case AF_APPLETALK:
582 (void) snprintf(line, sizeof(line), "atalk %s",
583 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
584 break;
585
586 case AF_LINK:
587 return (link_ntoa((struct sockaddr_dl *)sa));
588
589 default:
590 {
591 u_short *sp = (u_short *)sa;
592 u_short *splim = sp + ((sa->sa_len + 1) >> 1);
593 char *cps = line + sprintf(line, "(%d)", sa->sa_family);
594 char *cpe = line + sizeof(line);
595
596 while (++sp < splim && cps < cpe) /* start with sa->sa_data */
597 if ((n = snprintf(cps, cpe - cps, " %x", *sp)) > 0)
598 cps += n;
599 else
600 *cps = '\0';
601 break;
602 }
603 }
604 return (line);
605}
606
607/*
608 * Return the name of the network whose address is given.
609 * The address is assumed to be that of a net, not a host.
610 */
611const char *
612netname(struct sockaddr *sa)
613{
614 const char *cp = NULL;
615 static char line[MAXHOSTNAMELEN + 1];
616 struct netent *np = NULL;
617 u_long i;
618 int n;
619
620 switch (sa->sa_family) {
621
622 case AF_INET:
623 { struct in_addr in;
624 in = ((struct sockaddr_in *)sa)->sin_addr;
625
626 i = in.s_addr = ntohl(in.s_addr);
627 if (in.s_addr == 0)
628 cp = "default";
629 else if (!nflag) {
630 np = getnetbyaddr(i, AF_INET);
631 if (np != NULL)
632 cp = np->n_name;
633 }
634#define C(x) (unsigned)((x) & 0xff)
635 if (cp != NULL)
636 strncpy(line, cp, sizeof(line));
637 else if ((in.s_addr & 0xffffff) == 0)
638 (void) sprintf(line, "%u", C(in.s_addr >> 24));
639 else if ((in.s_addr & 0xffff) == 0)
640 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24),
641 C(in.s_addr >> 16));
642 else if ((in.s_addr & 0xff) == 0)
643 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
644 C(in.s_addr >> 16), C(in.s_addr >> 8));
645 else
646 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
647 C(in.s_addr >> 16), C(in.s_addr >> 8),
648 C(in.s_addr));
649#undef C
650 break;
651 }
652
653#ifdef INET6
654 case AF_INET6:
655 {
656 struct sockaddr_in6 sin6; /* use static var for safety */
657 int niflags = 0;
658
659 memset(&sin6, 0, sizeof(sin6));
660 memcpy(&sin6, sa, sa->sa_len);
661 sin6.sin6_len = sizeof(struct sockaddr_in6);
662 sin6.sin6_family = AF_INET6;
663 if (nflag)
664 niflags |= NI_NUMERICHOST;
665 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
666 line, sizeof(line), NULL, 0, niflags) != 0)
667 strncpy(line, "invalid", sizeof(line));
668
669 return(line);
670 }
671#endif
672
673 case AF_APPLETALK:
674 (void) snprintf(line, sizeof(line), "atalk %s",
675 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
676 break;
677
678 case AF_LINK:
679 return (link_ntoa((struct sockaddr_dl *)sa));
680
681
682 default:
683 {
684 u_short *sp = (u_short *)sa->sa_data;
685 u_short *splim = sp + ((sa->sa_len + 1)>>1);
686 char *cps = line + sprintf(line, "af %d:", sa->sa_family);
687 char *cpe = line + sizeof(line);
688
689 while (sp < splim && cps < cpe)
690 if ((n = snprintf(cps, cpe - cps, " %x", *sp++)) > 0)
691 cps += n;
692 else
693 *cps = '\0';
694 break;
695 }
696 }
697 return (line);
698}
699
700static void
701set_metric(char *value, int key)
702{
703 int flag = 0;
704 u_long noval, *valp = &noval;
705
706 switch (key) {
707#define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
708 caseof(K_MTU, RTV_MTU, rmx_mtu);
709 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
710 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
711 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
712 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
713 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
714 caseof(K_RTT, RTV_RTT, rmx_rtt);
715 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
716 caseof(K_WEIGHT, RTV_WEIGHT, rmx_weight);
717 }
718 rtm_inits |= flag;
719 if (lockrest || locking)
720 rt_metrics.rmx_locks |= flag;
721 if (locking)
722 locking = 0;
723 *valp = atoi(value);
724}
725
726#define F_ISHOST 0x01
727#define F_FORCENET 0x02
728#define F_FORCEHOST 0x04
729#define F_PROXY 0x08
730#define F_INTERFACE 0x10
731
732static void
733newroute(int argc, char **argv)
734{
735 struct hostent *hp;
736 struct fibl *fl;
737 char *cmd;
738 const char *dest, *gateway, *errmsg;
739 int key, error, flags, nrflags, fibnum;
740
741 if (uid != 0 && !debugonly && !tflag) {
742 errx(EX_NOPERM, "must be root to alter routing table");
743 }
744
745 dest = NULL;
746 gateway = NULL;
747 flags = RTF_STATIC;
748 nrflags = 0;
749 hp = NULL;
750 TAILQ_INIT(&fibl_head);
751
752 cmd = argv[0];
753 if (*cmd != 'g' && *cmd != 's')
754 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
755
756 while (--argc > 0) {
757 if (**(++argv)== '-') {
758 switch (key = keyword(1 + *argv)) {
759 case K_LINK:
760 af = AF_LINK;
761 aflen = sizeof(struct sockaddr_dl);
762 break;
763 case K_INET:
764 af = AF_INET;
765 aflen = sizeof(struct sockaddr_in);
766 break;
767#ifdef INET6
768 case K_INET6:
769 af = AF_INET6;
770 aflen = sizeof(struct sockaddr_in6);
771 break;
772#endif
773 case K_ATALK:
774 af = AF_APPLETALK;
775 aflen = sizeof(struct sockaddr_at);
776 break;
777 case K_SA:
778 af = PF_ROUTE;
779 aflen = sizeof(union sockunion);
780 break;
781 case K_IFACE:
782 case K_INTERFACE:
783 nrflags |= F_INTERFACE;
784 break;
785 case K_NOSTATIC:
786 flags &= ~RTF_STATIC;
787 break;
788 case K_LOCK:
789 locking = 1;
790 break;
791 case K_LOCKREST:
792 lockrest = 1;
793 break;
794 case K_HOST:
795 nrflags |= F_FORCEHOST;
796 break;
797 case K_REJECT:
798 flags |= RTF_REJECT;
799 break;
800 case K_BLACKHOLE:
801 flags |= RTF_BLACKHOLE;
802 break;
803 case K_PROTO1:
804 flags |= RTF_PROTO1;
805 break;
806 case K_PROTO2:
807 flags |= RTF_PROTO2;
808 break;
809 case K_PROXY:
810 nrflags |= F_PROXY;
811 break;
812 case K_XRESOLVE:
813 flags |= RTF_XRESOLVE;
814 break;
815 case K_STATIC:
816 flags |= RTF_STATIC;
817 break;
818 case K_STICKY:
819 flags |= RTF_STICKY;
820 break;
821 case K_NOSTICK:
822 flags &= ~RTF_STICKY;
823 break;
824 case K_FIB:
825 if (!--argc)
826 usage(NULL);
827 error = fiboptlist_csv(*++argv, &fibl_head);
828 if (error)
829 errx(EX_USAGE,
830 "invalid fib number: %s", *argv);
831 break;
832 case K_IFA:
833 if (!--argc)
834 usage(NULL);
835 getaddr(RTA_IFA, *++argv, 0, nrflags);
836 break;
837 case K_IFP:
838 if (!--argc)
839 usage(NULL);
840 getaddr(RTA_IFP, *++argv, 0, nrflags);
841 break;
842 case K_GENMASK:
843 if (!--argc)
844 usage(NULL);
845 getaddr(RTA_GENMASK, *++argv, 0, nrflags);
846 break;
847 case K_GATEWAY:
848 if (!--argc)
849 usage(NULL);
850 getaddr(RTA_GATEWAY, *++argv, 0, nrflags);
851 gateway = *argv;
852 break;
853 case K_DST:
854 if (!--argc)
855 usage(NULL);
856 if (getaddr(RTA_DST, *++argv, &hp, nrflags))
857 nrflags |= F_ISHOST;
858 dest = *argv;
859 break;
860 case K_NETMASK:
861 if (!--argc)
862 usage(NULL);
863 getaddr(RTA_NETMASK, *++argv, 0, nrflags);
864 /* FALLTHROUGH */
865 case K_NET:
866 nrflags |= F_FORCENET;
867 break;
868 case K_PREFIXLEN:
869 if (!--argc)
870 usage(NULL);
871 if (prefixlen(*++argv) == -1) {
872 nrflags &= ~F_FORCENET;
873 nrflags |= F_ISHOST;
874 } else {
875 nrflags |= F_FORCENET;
876 nrflags &= ~F_ISHOST;
877 }
878 break;
879 case K_MTU:
880 case K_HOPCOUNT:
881 case K_EXPIRE:
882 case K_RECVPIPE:
883 case K_SENDPIPE:
884 case K_SSTHRESH:
885 case K_RTT:
886 case K_RTTVAR:
887 case K_WEIGHT:
888 if (!--argc)
889 usage(NULL);
890 set_metric(*++argv, key);
891 break;
892 default:
893 usage(1+*argv);
894 }
895 } else {
896 if ((rtm_addrs & RTA_DST) == 0) {
897 dest = *argv;
898 if (getaddr(RTA_DST, *argv, &hp, nrflags))
899 nrflags |= F_ISHOST;
900 } else if ((rtm_addrs & RTA_GATEWAY) == 0) {
901 gateway = *argv;
902 getaddr(RTA_GATEWAY, *argv, &hp, nrflags);
903 } else {
904 getaddr(RTA_NETMASK, *argv, 0, nrflags);
905 nrflags |= F_FORCENET;
906 }
907 }
908 }
909
910 if (nrflags & F_FORCEHOST) {
911 nrflags |= F_ISHOST;
912#ifdef INET6
913 if (af == AF_INET6) {
914 rtm_addrs &= ~RTA_NETMASK;
915 memset((void *)&so_mask, 0, sizeof(so_mask));
916 }
917#endif
918 }
919 if (nrflags & F_FORCENET)
920 nrflags &= ~F_ISHOST;
921 flags |= RTF_UP;
922 if (nrflags & F_ISHOST)
923 flags |= RTF_HOST;
924 if ((nrflags & F_INTERFACE) == 0)
925 flags |= RTF_GATEWAY;
926 if (nrflags & F_PROXY)
927 flags |= RTF_ANNOUNCE;
928 if (dest == NULL)
929 dest = "";
930 if (gateway == NULL)
931 gateway = "";
932
933 if (TAILQ_EMPTY(&fibl_head)) {
934 error = fiboptlist_csv("default", &fibl_head);
935 if (error)
936 errx(EX_OSERR, "fiboptlist_csv failed.");
937 }
938 error = 0;
939 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
940 fl->fl_error = newroute_fib(fl->fl_num, cmd, flags);
941 if (fl->fl_error)
942 fl->fl_errno = errno;
943 error += fl->fl_error;
944 }
945 if (*cmd == 'g' || *cmd == 's')
946 exit(error);
947
948 error = 0;
949 if (!qflag) {
950 fibnum = 0;
951 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
952 if (fl->fl_error == 0)
953 fibnum++;
954 }
955 if (fibnum > 0) {
956 int firstfib = 1;
957
958 printf("%s %s %s", cmd,
959 (nrflags & F_ISHOST) ? "host" : "net", dest);
960 if (*gateway)
961 printf(": gateway %s", gateway);
962
963 if (numfibs > 1) {
964 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
965 if (fl->fl_error == 0
966 && fl->fl_num >= 0) {
967 if (firstfib) {
968 printf(" fib ");
969 firstfib = 0;
970 }
971 printf("%d", fl->fl_num);
972 if (fibnum-- > 1)
973 printf(",");
974 }
975 }
976 }
977 printf("\n");
978 }
979
980 fibnum = 0;
981 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
982 if (fl->fl_error != 0) {
983 printf("%s %s %s", cmd, (nrflags & F_ISHOST)
984 ? "host" : "net", dest);
985 if (*gateway)
986 printf(": gateway %s", gateway);
987
988 if (fl->fl_num >= 0)
989 printf(" fib %d", fl->fl_num);
990
991 switch (fl->fl_errno) {
992 case ESRCH:
993 errmsg = "not in table";
994 break;
995 case EBUSY:
996 errmsg = "entry in use";
997 break;
998 case ENOBUFS:
999 errmsg = "not enough memory";
1000 break;
1001 case EADDRINUSE:
1002 /*
1003 * handle recursion avoidance
1004 * in rt_setgate()
1005 */
1006 errmsg = "gateway uses the same route";
1007 break;
1008 case EEXIST:
1009 errmsg = "route already in table";
1010 break;
1011 default:
1012 errmsg = strerror(fl->fl_errno);
1013 break;
1014 }
1015 printf(": %s\n", errmsg);
1016 error = 1;
1017 }
1018 }
1019 }
1020 exit(error);
1021}
1022
1023static int
1024newroute_fib(int fib, char *cmd, int flags)
1025{
1026 int error;
1027
1028 error = set_sofib(fib);
1029 if (error) {
1030 warn("fib number %d is ignored", fib);
1031 return (error);
1032 }
1033
1034 error = rtmsg(*cmd, flags, fib);
1035 return (error);
1036}
1037
1038static void
1039inet_makenetandmask(u_long net, struct sockaddr_in *sin, u_long bits)
1040{
1041 u_long mask = 0;
1042 char *cp;
1043
1044 rtm_addrs |= RTA_NETMASK;
1045
1046 /*
1047 * MSB of net should be meaningful. 0/0 is exception.
1048 */
1049 if (net > 0)
1050 while ((net & 0xff000000) == 0)
1051 net <<= 8;
1052
1053 /*
1054 * If no /xx was specified we must calculate the
1055 * CIDR address.
1056 */
1057 if ((bits == 0) && (net != 0)) {
1058 u_long i, j;
1059 for(i=0,j=0xff; i<4; i++) {
1060 if (net & j) {
1061 break;
1062 }
1063 j <<= 8;
1064 }
1065 /* i holds the first non zero bit */
1066 bits = 32 - (i*8);
1067 }
1068 if (bits != 0)
1069 mask = 0xffffffff << (32 - bits);
1070
1071 sin->sin_addr.s_addr = htonl(net);
1072 sin = &so_mask.sin;
1073 sin->sin_addr.s_addr = htonl(mask);
1074 sin->sin_len = 0;
1075 sin->sin_family = 0;
1076 cp = (char *)(&sin->sin_addr + 1);
1077 while (*--cp == 0 && cp > (char *)sin)
1078 ;
1079 sin->sin_len = 1 + cp - (char *)sin;
1080}
1081
1082#ifdef INET6
1083/*
1084 * XXX the function may need more improvement...
1085 */
1086static int
1087inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen)
1088{
1089 struct in6_addr in6;
1090
1091 if (plen == NULL) {
1092 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
1093 sin6->sin6_scope_id == 0) {
1094 plen = "0";
1095 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
1096 /* aggregatable global unicast - RFC2374 */
1097 memset(&in6, 0, sizeof(in6));
1098 if (!memcmp(&sin6->sin6_addr.s6_addr[8],
1099 &in6.s6_addr[8], 8))
1100 plen = "64";
1101 }
1102 }
1103
1104 if (plen == NULL || strcmp(plen, "128") == 0)
1105 return (1);
1106 rtm_addrs |= RTA_NETMASK;
1107 prefixlen(plen);
1108 return (0);
1109}
1110#endif
1111
1112/*
1113 * Interpret an argument as a network address of some kind,
1114 * returning 1 if a host address, 0 if a network address.
1115 */
1116static int
1117getaddr(int which, char *str, struct hostent **hpp, int nrflags)
1118{
1119 sup su;
1120 struct hostent *hp;
1121 struct netent *np;
1122 u_long val;
1123 char *q;
1124 int afamily; /* local copy of af so we can change it */
1125
1126 if (af == 0) {
1127 af = AF_INET;
1128 aflen = sizeof(struct sockaddr_in);
1129 }
1130 afamily = af;
1131 rtm_addrs |= which;
1132 switch (which) {
1133 case RTA_DST:
1134 su = &so_dst;
1135 break;
1136 case RTA_GATEWAY:
1137 su = &so_gate;
1138 if (nrflags & F_INTERFACE) {
1139 struct ifaddrs *ifap, *ifa;
1140 struct sockaddr_dl *sdl = NULL;
1141
1142 if (getifaddrs(&ifap))
1143 err(1, "getifaddrs");
1144
1145 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
1146 if (ifa->ifa_addr->sa_family != AF_LINK)
1147 continue;
1148
1149 if (strcmp(str, ifa->ifa_name) != 0)
1150 continue;
1151
1152 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
1153 }
1154 /* If we found it, then use it */
1155 if (sdl != NULL) {
1156 /*
1157 * Copy is safe since we have a
1158 * sockaddr_storage member in sockunion{}.
1159 * Note that we need to copy before calling
1160 * freeifaddrs().
1161 */
1162 memcpy(&su->sdl, sdl, sdl->sdl_len);
1163 }
1164 freeifaddrs(ifap);
1165 if (sdl != NULL)
1166 return(1);
1167 }
1168 break;
1169 case RTA_NETMASK:
1170 su = &so_mask;
1171 break;
1172 case RTA_GENMASK:
1173 su = &so_genmask;
1174 break;
1175 case RTA_IFP:
1176 su = &so_ifp;
1177 afamily = AF_LINK;
1178 break;
1179 case RTA_IFA:
1180 su = &so_ifa;
1181 break;
1182 default:
1183 usage("internal error");
1184 /*NOTREACHED*/
1185 }
1186 su->sa.sa_len = aflen;
1187 su->sa.sa_family = afamily; /* cases that don't want it have left already */
1188 if (strcmp(str, "default") == 0) {
1189 /*
1190 * Default is net 0.0.0.0/0
1191 */
1192 switch (which) {
1193 case RTA_DST:
1194 forcenet++;
1195#if 0
1196 bzero(su, sizeof(*su)); /* for readability */
1197#endif
1198 getaddr(RTA_NETMASK, str, 0, nrflags);
1199 break;
1200#if 0
1201 case RTA_NETMASK:
1202 case RTA_GENMASK:
1203 bzero(su, sizeof(*su)); /* for readability */
1204#endif
1205 }
1206 return (0);
1207 }
1208 switch (afamily) {
1209#ifdef INET6
1210 case AF_INET6:
1211 {
1212 struct addrinfo hints, *res;
1213 int ecode;
1214
1215 q = NULL;
1216 if (which == RTA_DST && (q = strchr(str, '/')) != NULL)
1217 *q = '\0';
1218 memset(&hints, 0, sizeof(hints));
1219 hints.ai_family = afamily; /*AF_INET6*/
1220 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1221 ecode = getaddrinfo(str, NULL, &hints, &res);
1222 if (ecode != 0 || res->ai_family != AF_INET6 ||
1223 res->ai_addrlen != sizeof(su->sin6)) {
1224 (void) fprintf(stderr, "%s: %s\n", str,
1225 gai_strerror(ecode));
1226 exit(1);
1227 }
1228 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6));
1229 freeaddrinfo(res);
1230 if (q != NULL)
1231 *q++ = '/';
1232 if (which == RTA_DST)
1233 return (inet6_makenetandmask(&su->sin6, q));
1234 return (0);
1235 }
1236#endif /* INET6 */
1237
1238 case AF_APPLETALK:
1239 if (!atalk_aton(str, &su->sat.sat_addr))
1240 errx(EX_NOHOST, "bad address: %s", str);
1241 rtm_addrs |= RTA_NETMASK;
1242 return(forcehost || su->sat.sat_addr.s_node != 0);
1243
1244 case AF_LINK:
1245 link_addr(str, &su->sdl);
1246 return (1);
1247
1248
1249 case PF_ROUTE:
1250 su->sa.sa_len = sizeof(*su);
1251 sockaddr(str, &su->sa);
1252 return (1);
1253
1254 case AF_INET:
1255 default:
1256 break;
1257 }
1258
1259 if (hpp == NULL)
1260 hpp = &hp;
1261 *hpp = NULL;
1262
1263 q = strchr(str,'/');
1264 if (q != NULL && which == RTA_DST) {
1265 *q = '\0';
1266 if ((val = inet_network(str)) != INADDR_NONE) {
1267 inet_makenetandmask(
1268 val, &su->sin, strtoul(q+1, 0, 0));
1269 return (0);
1270 }
1271 *q = '/';
1272 }
1273 if ((which != RTA_DST || forcenet == 0) &&
1274 inet_aton(str, &su->sin.sin_addr)) {
1275 val = su->sin.sin_addr.s_addr;
1276 if (which != RTA_DST || forcehost ||
1277 inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
1278 return (1);
1279 else {
1280 val = ntohl(val);
1281 goto netdone;
1282 }
1283 }
1284 if (which == RTA_DST && forcehost == 0 &&
1285 ((val = inet_network(str)) != INADDR_NONE ||
1286 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) {
1287netdone:
1288 inet_makenetandmask(val, &su->sin, 0);
1289 return (0);
1290 }
1291 hp = gethostbyname(str);
1292 if (hp != NULL) {
1293 *hpp = hp;
1294 su->sin.sin_family = hp->h_addrtype;
1295 memmove((char *)&su->sin.sin_addr, hp->h_addr,
1296 MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr)));
1297 return (1);
1298 }
1299 errx(EX_NOHOST, "bad address: %s", str);
1300}
1301
1302static int
1303prefixlen(const char *str)
1304{
1305 int len = atoi(str), q, r;
1306 int max;
1307 char *p;
1308
1309 rtm_addrs |= RTA_NETMASK;
1310 switch (af) {
1311#ifdef INET6
1312 case AF_INET6:
1313 max = 128;
1314 p = (char *)&so_mask.sin6.sin6_addr;
1315 break;
1316#endif
1317 case AF_INET:
1318 max = 32;
1319 p = (char *)&so_mask.sin.sin_addr;
1320 break;
1321 default:
1322 fprintf(stderr, "prefixlen not supported in this af\n");
1323 exit(1);
1324 }
1325
1326 if (len < 0 || max < len) {
1327 fprintf(stderr, "%s: bad value\n", str);
1328 exit(1);
1329 }
1330
1331 q = len >> 3;
1332 r = len & 7;
1333 so_mask.sa.sa_family = af;
1334 so_mask.sa.sa_len = aflen;
1335 memset((void *)p, 0, max / 8);
1336 if (q > 0)
1337 memset((void *)p, 0xff, q);
1338 if (r > 0)
1339 *((u_char *)p + q) = (0xff00 >> r) & 0xff;
1340 if (len == max)
1341 return (-1);
1342 else
1343 return (len);
1344}
1345
1346static void
1347interfaces(void)
1348{
1349 size_t needed;
1350 int mib[6];
1351 char *buf, *lim, *next, count = 0;
1352 struct rt_msghdr *rtm;
1353
1354retry2:
1355 mib[0] = CTL_NET;
1356 mib[1] = PF_ROUTE;
1357 mib[2] = 0; /* protocol */
1358 mib[3] = 0; /* wildcard address family */
1359 mib[4] = NET_RT_IFLIST;
1360 mib[5] = 0; /* no flags */
1361 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
1362 err(EX_OSERR, "route-sysctl-estimate");
1363 if ((buf = malloc(needed)) == NULL)
1364 errx(EX_OSERR, "malloc failed");
1365 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
1366 if (errno == ENOMEM && count++ < 10) {
1367 warnx("Routing table grew, retrying");
1368 sleep(1);
1369 free(buf);
1370 goto retry2;
1371 }
1372 err(EX_OSERR, "actual retrieval of interface table");
1373 }
1374 lim = buf + needed;
1375 for (next = buf; next < lim; next += rtm->rtm_msglen) {
1376 rtm = (struct rt_msghdr *)next;
1377 print_rtmsg(rtm, rtm->rtm_msglen);
1378 }
1379}
1380
1381static void
1382monitor(int argc, char *argv[])
1383{
1384 int n, fib, error;
1385 char msg[2048], *endptr;
1386
1387 fib = defaultfib;
1388 while (argc > 1) {
1389 argc--;
1390 argv++;
1391 if (**argv != '-')
1392 usage(*argv);
1393 switch (keyword(*argv + 1)) {
1394 case K_FIB:
1395 if (!--argc)
1396 usage(*argv);
1397 errno = 0;
1398 fib = strtol(*++argv, &endptr, 0);
1399 if (errno == 0) {
1400 if (*endptr != '\0' ||
1401 fib < 0 ||
1402 (numfibs != -1 && fib > numfibs - 1))
1403 errno = EINVAL;
1404 }
1405 if (errno)
1406 errx(EX_USAGE, "invalid fib number: %s", *argv);
1407 break;
1408 default:
1409 usage(*argv);
1410 }
1411 }
1412 error = set_sofib(fib);
1413 if (error)
1414 errx(EX_USAGE, "invalid fib number: %d", fib);
1415
1416 verbose = 1;
1417 if (debugonly) {
1418 interfaces();
1419 exit(0);
1420 }
1421 for (;;) {
1422 time_t now;
1423 n = read(s, msg, 2048);
1424 now = time(NULL);
1425 (void) printf("\ngot message of size %d on %s", n, ctime(&now));
1426 print_rtmsg((struct rt_msghdr *)msg, n);
1427 }
1428}
1429
1430struct {
1431 struct rt_msghdr m_rtm;
1432 char m_space[512];
1433} m_rtmsg;
1434
1435static int
1436rtmsg(int cmd, int flags, int fib)
1437{
1438 static int seq;
1439 int rlen;
1440 char *cp = m_rtmsg.m_space;
1441 int l;
1442
1443#define NEXTADDR(w, u) \
1444 if (rtm_addrs & (w)) {\
1445 l = SA_SIZE(&(u.sa)); memmove(cp, &(u), l); cp += l;\
1446 if (verbose) sodump(&(u),#u);\
1447 }
1448
1449 errno = 0;
1450 memset(&m_rtmsg, 0, sizeof(m_rtmsg));
1451 if (cmd == 'a')
1452 cmd = RTM_ADD;
1453 else if (cmd == 'c')
1454 cmd = RTM_CHANGE;
1455 else if (cmd == 'g' || cmd == 's') {
1456 cmd = RTM_GET;
1457 if (so_ifp.sa.sa_family == 0) {
1458 so_ifp.sa.sa_family = AF_LINK;
1459 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
1460 rtm_addrs |= RTA_IFP;
1461 }
1462 } else
1463 cmd = RTM_DELETE;
1464#define rtm m_rtmsg.m_rtm
1465 rtm.rtm_type = cmd;
1466 rtm.rtm_flags = flags;
1467 rtm.rtm_version = RTM_VERSION;
1468 rtm.rtm_seq = ++seq;
1469 rtm.rtm_addrs = rtm_addrs;
1470 rtm.rtm_rmx = rt_metrics;
1471 rtm.rtm_inits = rtm_inits;
1472
1473 if (rtm_addrs & RTA_NETMASK)
1474 mask_addr();
1475 NEXTADDR(RTA_DST, so_dst);
1476 NEXTADDR(RTA_GATEWAY, so_gate);
1477 NEXTADDR(RTA_NETMASK, so_mask);
1478 NEXTADDR(RTA_GENMASK, so_genmask);
1479 NEXTADDR(RTA_IFP, so_ifp);
1480 NEXTADDR(RTA_IFA, so_ifa);
1481 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
1482 if (verbose)
1483 print_rtmsg(&rtm, l);
1484 if (debugonly)
1485 return (0);
1486 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
1487 if (errno == EPERM)
1488 err(1, "writing to routing socket");
1489 warn("writing to routing socket");
1490 return (-1);
1491 }
1492 if (cmd == RTM_GET) {
1493 do {
1494 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
1495 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
1496 if (l < 0)
1497 warn("read from routing socket");
1498 else
1499 print_getmsg(&rtm, l, fib);
1500 }
1501#undef rtm
1502 return (0);
1503}
1504
1505static void
1506mask_addr(void)
1507{
1508 int olen = so_mask.sa.sa_len;
1509 char *cp1 = olen + (char *)&so_mask, *cp2;
1510
1511 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; )
1512 if (*--cp1 != 0) {
1513 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask;
1514 break;
1515 }
1516 if ((rtm_addrs & RTA_DST) == 0)
1517 return;
1518 switch (so_dst.sa.sa_family) {
1519 case AF_INET:
1520#ifdef INET6
1521 case AF_INET6:
1522#endif
1523 case AF_APPLETALK:
1524 case 0:
1525 return;
1526 }
1527 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst;
1528 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst;
1529 while (cp2 > cp1)
1530 *--cp2 = 0;
1531 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask;
1532 while (cp1 > so_dst.sa.sa_data)
1533 *--cp1 &= *--cp2;
1534}
1535
1536const char *msgtypes[] = {
1537 "",
1538 "RTM_ADD: Add Route",
1539 "RTM_DELETE: Delete Route",
1540 "RTM_CHANGE: Change Metrics or flags",
1541 "RTM_GET: Report Metrics",
1542 "RTM_LOSING: Kernel Suspects Partitioning",
1543 "RTM_REDIRECT: Told to use different route",
1544 "RTM_MISS: Lookup failed on this address",
1545 "RTM_LOCK: fix specified metrics",
1546 "RTM_OLDADD: caused by SIOCADDRT",
1547 "RTM_OLDDEL: caused by SIOCDELRT",
1548 "RTM_RESOLVE: Route created by cloning",
1549 "RTM_NEWADDR: address being added to iface",
1550 "RTM_DELADDR: address being removed from iface",
1551 "RTM_IFINFO: iface status change",
1552 "RTM_NEWMADDR: new multicast group membership on iface",
1553 "RTM_DELMADDR: multicast group membership removed from iface",
1554 "RTM_IFANNOUNCE: interface arrival/departure",
1555 "RTM_IEEE80211: IEEE 802.11 wireless event",
1556};
1557
1558char metricnames[] =
1559"\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire"
1560"\1mtu";
1561char routeflags[] =
1562"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE"
1563"\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE"
1564"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3"
1565"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY";
1566char ifnetflags[] =
1567"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1568"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1569"\017LINK2\020MULTICAST";
1570char addrnames[] =
1571"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
1572
1573static const char errfmt[] =
1574"\n%s: truncated route message, only %zu bytes left\n";
1575
1576static void
1577print_rtmsg(struct rt_msghdr *rtm, size_t msglen)
1578{
1579 struct if_msghdr *ifm;
1580 struct ifa_msghdr *ifam;
1581#ifdef RTM_NEWMADDR
1582 struct ifma_msghdr *ifmam;
1583#endif
1584 struct if_announcemsghdr *ifan;
1585 const char *state;
1586
1587 if (verbose == 0)
1588 return;
1589 if (rtm->rtm_version != RTM_VERSION) {
1590 (void) printf("routing message version %d not understood\n",
1591 rtm->rtm_version);
1592 return;
1593 }
1594 if (rtm->rtm_type < sizeof(msgtypes) / sizeof(msgtypes[0]))
1595 (void)printf("%s: ", msgtypes[rtm->rtm_type]);
1596 else
1597 (void)printf("unknown type %d: ", rtm->rtm_type);
1598 (void)printf("len %d, ", rtm->rtm_msglen);
1599
1600#define REQUIRE(x) do { \
1601 if (msglen < sizeof(x)) \
1602 goto badlen; \
1603 else \
1604 msglen -= sizeof(x); \
1605 } while (0)
1606
1607 switch (rtm->rtm_type) {
1608 case RTM_IFINFO:
1609 REQUIRE(struct if_msghdr);
1610 ifm = (struct if_msghdr *)rtm;
1611 (void) printf("if# %d, ", ifm->ifm_index);
1612 switch (ifm->ifm_data.ifi_link_state) {
1613 case LINK_STATE_DOWN:
1614 state = "down";
1615 break;
1616 case LINK_STATE_UP:
1617 state = "up";
1618 break;
1619 default:
1620 state = "unknown";
1621 break;
1622 }
1623 (void) printf("link: %s, flags:", state);
1624 bprintf(stdout, ifm->ifm_flags, ifnetflags);
1625 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs, msglen);
1626 break;
1627 case RTM_NEWADDR:
1628 case RTM_DELADDR:
1629 REQUIRE(struct ifa_msghdr);
1630 ifam = (struct ifa_msghdr *)rtm;
1631 (void) printf("metric %d, flags:", ifam->ifam_metric);
1632 bprintf(stdout, ifam->ifam_flags, routeflags);
1633 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs, msglen);
1634 break;
1635#ifdef RTM_NEWMADDR
1636 case RTM_NEWMADDR:
1637 case RTM_DELMADDR:
1638 REQUIRE(struct ifma_msghdr);
1639 ifmam = (struct ifma_msghdr *)rtm;
1640 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs, msglen);
1641 break;
1642#endif
1643 case RTM_IFANNOUNCE:
1644 REQUIRE(struct if_announcemsghdr);
1645 ifan = (struct if_announcemsghdr *)rtm;
1646 (void) printf("if# %d, what: ", ifan->ifan_index);
1647 switch (ifan->ifan_what) {
1648 case IFAN_ARRIVAL:
1649 printf("arrival");
1650 break;
1651 case IFAN_DEPARTURE:
1652 printf("departure");
1653 break;
1654 default:
1655 printf("#%d", ifan->ifan_what);
1656 break;
1657 }
1658 printf("\n");
1659 fflush(stdout);
1660 break;
1661
1662 default:
1663 (void) printf("pid: %ld, seq %d, errno %d, flags:",
1664 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1665 bprintf(stdout, rtm->rtm_flags, routeflags);
1666 pmsg_common(rtm, msglen);
1667 }
1668
1669 return;
1670
1671badlen:
1672 (void)printf(errfmt, __func__, msglen);
1673#undef REQUIRE
1674}
1675
1676static void
1677print_getmsg(struct rt_msghdr *rtm, int msglen, int fib)
1678{
1679 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
1680 struct sockaddr_dl *ifp = NULL;
1681 struct sockaddr *sa;
1682 char *cp;
1683 int i;
1684
1685 (void) printf(" route to: %s\n",
1686 routename((struct sockaddr *)&so_dst));
1687 if (rtm->rtm_version != RTM_VERSION) {
1688 warnx("routing message version %d not understood",
1689 rtm->rtm_version);
1690 return;
1691 }
1692 if (rtm->rtm_msglen > msglen) {
1693 warnx("message length mismatch, in packet %d, returned %d",
1694 rtm->rtm_msglen, msglen);
1695 }
1696 if (rtm->rtm_errno) {
1697 errno = rtm->rtm_errno;
1698 warn("message indicates error %d", errno);
1699 return;
1700 }
1701 cp = ((char *)(rtm + 1));
1702 if (rtm->rtm_addrs)
1703 for (i = 1; i; i <<= 1)
1704 if (i & rtm->rtm_addrs) {
1705 sa = (struct sockaddr *)cp;
1706 switch (i) {
1707 case RTA_DST:
1708 dst = sa;
1709 break;
1710 case RTA_GATEWAY:
1711 gate = sa;
1712 break;
1713 case RTA_NETMASK:
1714 mask = sa;
1715 break;
1716 case RTA_IFP:
1717 if (sa->sa_family == AF_LINK &&
1718 ((struct sockaddr_dl *)sa)->sdl_nlen)
1719 ifp = (struct sockaddr_dl *)sa;
1720 break;
1721 }
1722 cp += SA_SIZE(sa);
1723 }
1724 if (dst && mask)
1725 mask->sa_family = dst->sa_family; /* XXX */
1726 if (dst)
1727 (void)printf("destination: %s\n", routename(dst));
1728 if (mask) {
1729 int savenflag = nflag;
1730
1731 nflag = 1;
1732 (void)printf(" mask: %s\n", routename(mask));
1733 nflag = savenflag;
1734 }
1735 if (gate && rtm->rtm_flags & RTF_GATEWAY)
1736 (void)printf(" gateway: %s\n", routename(gate));
1737 if (fib >= 0)
1738 (void)printf(" fib: %u\n", (unsigned int)fib);
1739 if (ifp)
1740 (void)printf(" interface: %.*s\n",
1741 ifp->sdl_nlen, ifp->sdl_data);
1742 (void)printf(" flags: ");
1743 bprintf(stdout, rtm->rtm_flags, routeflags);
1744
1745#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1746#define msec(u) (((u) + 500) / 1000) /* usec to msec */
1747
1748 (void) printf("\n%s\n", "\
1749 recvpipe sendpipe ssthresh rtt,msec mtu weight expire");
1750 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1751 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1752 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1753 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1754 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
1755 printf("%8ld%c ", rtm->rtm_rmx.rmx_weight, lock(WEIGHT));
1756 if (rtm->rtm_rmx.rmx_expire)
1757 rtm->rtm_rmx.rmx_expire -= time(0);
1758 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
1759#undef lock
1760#undef msec
1761#define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
1762 if (verbose)
1763 pmsg_common(rtm, msglen);
1764 else if (rtm->rtm_addrs &~ RTA_IGN) {
1765 (void) printf("sockaddrs: ");
1766 bprintf(stdout, rtm->rtm_addrs, addrnames);
1767 putchar('\n');
1768 }
1769#undef RTA_IGN
1770}
1771
1772static void
1773pmsg_common(struct rt_msghdr *rtm, size_t msglen)
1774{
1775 (void) printf("\nlocks: ");
1776 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
1777 (void) printf(" inits: ");
1778 bprintf(stdout, rtm->rtm_inits, metricnames);
1779 if (msglen > sizeof(struct rt_msghdr))
1780 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs,
1781 msglen - sizeof(struct rt_msghdr));
1782 else
1783 (void) fflush(stdout);
1784}
1785
1786static void
1787pmsg_addrs(char *cp, int addrs, size_t len)
1788{
1789 struct sockaddr *sa;
1790 int i;
1791
1792 if (addrs == 0) {
1793 (void) putchar('\n');
1794 return;
1795 }
1796 (void) printf("\nsockaddrs: ");
1797 bprintf(stdout, addrs, addrnames);
1798 (void) putchar('\n');
1799 for (i = 1; i != 0; i <<= 1)
1800 if (i & addrs) {
1801 sa = (struct sockaddr *)cp;
1802 if (len == 0 || len < SA_SIZE(sa)) {
1803 (void) printf(errfmt, __func__, len);
1804 break;
1805 }
1806 (void) printf(" %s", routename(sa));
1807 len -= SA_SIZE(sa);
1808 cp += SA_SIZE(sa);
1809 }
1810 (void) putchar('\n');
1811 (void) fflush(stdout);
1812}
1813
1814static void
1815bprintf(FILE *fp, int b, u_char *str)
1816{
1817 int i;
1818 int gotsome = 0;
1819
1820 if (b == 0)
1821 return;
1822 while ((i = *str++) != 0) {
1823 if (b & (1 << (i-1))) {
1824 if (gotsome == 0)
1825 i = '<';
1826 else
1827 i = ',';
1828 (void) putc(i, fp);
1829 gotsome = 1;
1830 for (; (i = *str) > 32; str++)
1831 (void) putc(i, fp);
1832 } else
1833 while (*str > 32)
1834 str++;
1835 }
1836 if (gotsome)
1837 (void) putc('>', fp);
1838}
1839
1840int
1841keyword(const char *cp)
1842{
1843 struct keytab *kt = keywords;
1844
1845 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0)
1846 kt++;
1847 return (kt->kt_i);
1848}
1849
1850static void
1851sodump(sup su, const char *which)
1852{
1853 switch (su->sa.sa_family) {
1854 case AF_LINK:
1855 (void) printf("%s: link %s; ",
1856 which, link_ntoa(&su->sdl));
1857 break;
1858 case AF_INET:
1859 (void) printf("%s: inet %s; ",
1860 which, inet_ntoa(su->sin.sin_addr));
1861 break;
1862 case AF_APPLETALK:
1863 (void) printf("%s: atalk %s; ",
1864 which, atalk_ntoa(su->sat.sat_addr));
1865 break;
1866 }
1867 (void) fflush(stdout);
1868}
1869
1870/* States*/
1871#define VIRGIN 0
1872#define GOTONE 1
1873#define GOTTWO 2
1874/* Inputs */
1875#define DIGIT (4*0)
1876#define END (4*1)
1877#define DELIM (4*2)
1878
1879static void
1880sockaddr(char *addr, struct sockaddr *sa)
1881{
1882 char *cp = (char *)sa;
1883 int size = sa->sa_len;
1884 char *cplim = cp + size;
1885 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
1886
1887 memset(cp, 0, size);
1888 cp++;
1889 do {
1890 if ((*addr >= '0') && (*addr <= '9')) {
1891 new = *addr - '0';
1892 } else if ((*addr >= 'a') && (*addr <= 'f')) {
1893 new = *addr - 'a' + 10;
1894 } else if ((*addr >= 'A') && (*addr <= 'F')) {
1895 new = *addr - 'A' + 10;
1896 } else if (*addr == '\0')
1897 state |= END;
1898 else
1899 state |= DELIM;
1900 addr++;
1901 switch (state /* | INPUT */) {
1902 case GOTTWO | DIGIT:
1903 *cp++ = byte; /*FALLTHROUGH*/
1904 case VIRGIN | DIGIT:
1905 state = GOTONE; byte = new; continue;
1906 case GOTONE | DIGIT:
1907 state = GOTTWO; byte = new + (byte << 4); continue;
1908 default: /* | DELIM */
1909 state = VIRGIN; *cp++ = byte; byte = 0; continue;
1910 case GOTONE | END:
1911 case GOTTWO | END:
1912 *cp++ = byte; /* FALLTHROUGH */
1913 case VIRGIN | END:
1914 break;
1915 }
1916 break;
1917 } while (cp < cplim);
1918 sa->sa_len = cp - (char *)sa;
1919}
1920
1921static int
1922atalk_aton(const char *text, struct at_addr *addr)
1923{
1924 u_int net, node;
1925
1926 if (sscanf(text, "%u.%u", &net, &node) != 2
1927 || net > 0xffff || node > 0xff)
1928 return(0);
1929 addr->s_net = htons(net);
1930 addr->s_node = node;
1931 return(1);
1932}
1933
1934static char *
1935atalk_ntoa(struct at_addr at)
1936{
1937 static char buf[20];
1938
1939 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);
1940 return(buf);
1941}