2 * Copyright (c) 1983, 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
31 static const char copyright[] =
32 "@(#) Copyright (c) 1983, 1989, 1991, 1993\n\
33 The Regents of the University of California. All rights reserved.\n";
38 static char sccsid[] = "@(#)route.c 8.6 (Berkeley) 4/28/95";
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
45 #include <sys/param.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>
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>
74 static struct keytab {
82 static struct sockaddr_storage so[RTAX_MAX];
83 static int pid, rtm_addrs;
85 static int nflag, af, qflag, tflag;
86 static int verbose, aflen;
87 static int locking, lockrest, debugonly;
88 static struct rt_metrics rt_metrics;
89 static u_long rtm_inits;
91 static int defaultfib;
94 static int atalk_aton(const char *, struct at_addr *);
95 static char *atalk_ntoa(struct at_addr);
96 static void printb(int, const char *);
97 static void flushroutes(int argc, char *argv[]);
98 static int flushroutes_fib(int);
99 static int getaddr(int, char *, struct hostent **, int);
100 static int keyword(const char *);
102 static void inet_makenetandmask(u_long, struct sockaddr_in *,
103 struct sockaddr_in *, u_long);
106 static int inet6_makenetandmask(struct sockaddr_in6 *, const char *);
108 static void interfaces(void);
109 static void monitor(int, char*[]);
110 static const char *netname(struct sockaddr *);
111 static void newroute(int, char **);
112 static int newroute_fib(int, char *, int);
113 static void pmsg_addrs(char *, int, size_t);
114 static void pmsg_common(struct rt_msghdr *, size_t);
115 static int prefixlen(const char *);
116 static void print_getmsg(struct rt_msghdr *, int, int);
117 static void print_rtmsg(struct rt_msghdr *, size_t);
118 static const char *routename(struct sockaddr *);
119 static int rtmsg(int, int, int);
120 static void set_metric(char *, int);
121 static int set_sofib(int);
122 static void sockaddr(char *, struct sockaddr *, size_t);
123 static void sodump(struct sockaddr *, const char *);
126 TAILQ_ENTRY(fibl) fl_next;
132 static TAILQ_HEAD(fibl_head_t, fibl) fibl_head;
134 static int fiboptlist_csv(const char *, struct fibl_head_t *);
135 static int fiboptlist_range(const char *, struct fibl_head_t *);
137 static void usage(const char *) __dead2;
140 usage(const char *cp)
143 warnx("bad keyword: %s", cp);
144 errx(EX_USAGE, "usage: route [-46dnqtv] command [[modifiers] args]");
149 main(int argc, char **argv)
157 while ((ch = getopt(argc, argv, "46nqdtv")) != -1)
162 aflen = sizeof(struct sockaddr_in);
164 errx(1, "IPv4 support is not compiled in");
170 aflen = sizeof(struct sockaddr_in6);
172 errx(1, "IPv6 support is not compiled in");
200 s = open(_PATH_DEVNULL, O_WRONLY, 0);
202 s = socket(PF_ROUTE, SOCK_RAW, 0);
204 err(EX_OSERR, "socket");
206 len = sizeof(numfibs);
207 if (sysctlbyname("net.fibs", (void *)&numfibs, &len, NULL, 0) == -1)
210 len = sizeof(defaultfib);
212 sysctlbyname("net.my_fibnum", (void *)&defaultfib, &len, NULL,
217 switch (keyword(*argv)) {
227 newroute(argc, argv);
235 flushroutes(argc, argv);
249 return (setsockopt(s, SOL_SOCKET, SO_SETFIB, (void *)&fib,
254 fiboptlist_range(const char *arg, struct fibl_head_t *flh)
257 char *str0, *str, *token, *endptr;
258 int fib[2], i, error;
260 str0 = str = strdup(arg);
263 while ((token = strsep(&str, "-")) != NULL) {
268 fib[i] = strtol(token, &endptr, 0);
270 if (*endptr != '\0' ||
272 (numfibs != -1 && fib[i] > numfibs - 1))
282 goto fiboptlist_range_ret;
285 if (fib[0] >= fib[1]) {
287 goto fiboptlist_range_ret;
289 for (i = fib[0]; i <= fib[1]; i++) {
290 fl = calloc(1, sizeof(*fl));
293 goto fiboptlist_range_ret;
296 TAILQ_INSERT_TAIL(flh, fl, fl_next);
298 fiboptlist_range_ret:
305 fiboptlist_csv(const char *arg, struct fibl_head_t *flh)
308 char *str0, *str, *token, *endptr;
312 if (strcmp("all", arg) == 0) {
313 str = calloc(1, ALLSTRLEN);
316 goto fiboptlist_csv_ret;
319 snprintf(str, ALLSTRLEN - 1, "%d-%d", 0, numfibs - 1);
321 snprintf(str, ALLSTRLEN - 1, "%d", 0);
322 } else if (strcmp("default", arg) == 0) {
323 str0 = str = calloc(1, ALLSTRLEN);
326 goto fiboptlist_csv_ret;
328 snprintf(str, ALLSTRLEN - 1, "%d", defaultfib);
330 str0 = str = strdup(arg);
333 while ((token = strsep(&str, ",")) != NULL) {
334 if (*token != '-' && strchr(token, '-') != NULL) {
335 error = fiboptlist_range(token, flh);
337 goto fiboptlist_csv_ret;
340 fib = strtol(token, &endptr, 0);
342 if (*endptr != '\0' ||
344 (numfibs != -1 && fib > numfibs - 1))
349 goto fiboptlist_csv_ret;
351 fl = calloc(1, sizeof(*fl));
354 goto fiboptlist_csv_ret;
357 TAILQ_INSERT_TAIL(flh, fl, fl_next);
367 * Purge all entries in the routing tables not
368 * associated with network interfaces.
371 flushroutes(int argc, char *argv[])
376 if (uid != 0 && !debugonly && !tflag)
377 errx(EX_NOPERM, "must be root to alter routing table");
378 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
380 TAILQ_INIT(&fibl_head);
386 switch (keyword(*argv + 1)) {
408 error = fiboptlist_csv(*++argv, &fibl_head);
410 errx(EX_USAGE, "invalid fib number: %s", *argv);
416 if (TAILQ_EMPTY(&fibl_head)) {
417 error = fiboptlist_csv("default", &fibl_head);
419 errx(EX_OSERR, "fiboptlist_csv failed.");
421 TAILQ_FOREACH(fl, &fibl_head, fl_next)
422 flushroutes_fib(fl->fl_num);
426 flushroutes_fib(int fib)
428 struct rt_msghdr *rtm;
430 char *buf, *next, *lim;
431 int mib[7], rlen, seqno, count = 0;
434 error = set_sofib(fib);
436 warn("fib number %d is ignored", fib);
443 mib[2] = 0; /* protocol */
445 mib[4] = NET_RT_DUMP;
446 mib[5] = 0; /* no flags */
448 if (sysctl(mib, nitems(mib), 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, nitems(mib), buf, &needed, NULL, 0) < 0) {
453 if (errno == ENOMEM && count++ < 10) {
454 warnx("Routing table grew, retrying");
459 err(EX_OSERR, "route-sysctl-get");
463 (void)printf("Examining routing table from sysctl\n");
465 for (next = buf; next < lim; next += rtm->rtm_msglen) {
466 rtm = (struct rt_msghdr *)(void *)next;
468 print_rtmsg(rtm, rtm->rtm_msglen);
469 if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
472 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
474 if (sa->sa_family != af)
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);
495 print_rtmsg(rtm, rlen);
497 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
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));
504 printf("-fib %-3d ", fib);
512 routename(struct sockaddr *sa)
514 struct sockaddr_dl *sdl;
516 static char line[NI_MAXHOST];
517 static char domain[MAXHOSTNAMELEN + 1];
518 static int first = 1, n;
522 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
523 (cp = strchr(domain, '.'))) {
524 domain[MAXHOSTNAMELEN] = '\0';
525 (void)strcpy(domain, cp + 1);
530 /* If the address is zero-filled, use "default". */
531 if (sa->sa_len == 0 && nflag == 0)
533 #if defined(INET) || defined(INET6)
534 switch (sa->sa_family) {
537 /* If the address is zero-filled, use "default". */
539 ((struct sockaddr_in *)(void *)sa)->sin_addr.s_addr ==
546 /* If the address is zero-filled, use "default". */
548 IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)(void *)sa)->sin6_addr))
555 switch (sa->sa_family) {
556 #if defined(INET) || defined(INET6)
564 struct sockaddr_storage ss;
568 memset(&ss, 0, sizeof(ss));
570 ss.ss_family = sa->sa_family;
572 memcpy(&ss, sa, sa->sa_len);
573 /* Expand sa->sa_len because it could be shortened. */
574 if (sa->sa_family == AF_INET)
575 ss.ss_len = sizeof(struct sockaddr_in);
576 else if (sa->sa_family == AF_INET6)
577 ss.ss_len = sizeof(struct sockaddr_in6);
578 error = getnameinfo((struct sockaddr *)&ss, ss.ss_len,
579 line, sizeof(line), NULL, 0,
580 (nflag == 0) ? 0 : NI_NUMERICHOST);
582 warnx("getnameinfo(): %s", gai_strerror(error));
583 strncpy(line, "invalid", sizeof(line));
586 /* Remove the domain part if any. */
587 p = strchr(line, '.');
588 if (p != NULL && strcmp(p + 1, domain) == 0)
596 (void)snprintf(line, sizeof(line), "atalk %s",
597 atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr));
601 sdl = (struct sockaddr_dl *)(void *)sa;
603 if (sdl->sdl_nlen == 0 &&
604 sdl->sdl_alen == 0 &&
605 sdl->sdl_slen == 0) {
606 n = snprintf(line, sizeof(line), "link#%d",
608 if (n > (int)sizeof(line))
612 return (link_ntoa(sdl));
617 u_short *sp = (u_short *)(void *)sa;
618 u_short *splim = sp + ((sa->sa_len + 1) >> 1);
619 char *cps = line + sprintf(line, "(%d)", sa->sa_family);
620 char *cpe = line + sizeof(line);
622 while (++sp < splim && cps < cpe) /* start with sa->sa_data */
623 if ((n = snprintf(cps, cpe - cps, " %x", *sp)) > 0)
634 * Return the name of the network whose address is given.
635 * The address is assumed to be that of a net, not a host.
638 netname(struct sockaddr *sa)
640 struct sockaddr_dl *sdl;
641 static char line[MAXHOSTNAMELEN + 1];
644 struct netent *np = NULL;
645 const char *cp = NULL;
649 switch (sa->sa_family) {
655 in = ((struct sockaddr_in *)(void *)sa)->sin_addr;
656 i = in.s_addr = ntohl(in.s_addr);
660 np = getnetbyaddr(i, AF_INET);
664 #define C(x) (unsigned)((x) & 0xff)
666 strncpy(line, cp, sizeof(line));
667 else if ((in.s_addr & 0xffffff) == 0)
668 (void)sprintf(line, "%u", C(in.s_addr >> 24));
669 else if ((in.s_addr & 0xffff) == 0)
670 (void)sprintf(line, "%u.%u", C(in.s_addr >> 24),
672 else if ((in.s_addr & 0xff) == 0)
673 (void)sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
674 C(in.s_addr >> 16), C(in.s_addr >> 8));
676 (void)sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
677 C(in.s_addr >> 16), C(in.s_addr >> 8),
686 struct sockaddr_in6 sin6;
689 memset(&sin6, 0, sizeof(sin6));
690 memcpy(&sin6, sa, sa->sa_len);
691 sin6.sin6_len = sizeof(sin6);
692 sin6.sin6_family = AF_INET6;
694 niflags |= NI_NUMERICHOST;
695 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
696 line, sizeof(line), NULL, 0, niflags) != 0)
697 strncpy(line, "invalid", sizeof(line));
704 (void)snprintf(line, sizeof(line), "atalk %s",
705 atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr));
709 sdl = (struct sockaddr_dl *)(void *)sa;
711 if (sdl->sdl_nlen == 0 &&
712 sdl->sdl_alen == 0 &&
713 sdl->sdl_slen == 0) {
714 n = snprintf(line, sizeof(line), "link#%d",
716 if (n > (int)sizeof(line))
720 return (link_ntoa(sdl));
725 u_short *sp = (u_short *)(void *)sa->sa_data;
726 u_short *splim = sp + ((sa->sa_len + 1)>>1);
727 char *cps = line + sprintf(line, "af %d:", sa->sa_family);
728 char *cpe = line + sizeof(line);
730 while (sp < splim && cps < cpe)
731 if ((n = snprintf(cps, cpe - cps, " %x", *sp++)) > 0)
742 set_metric(char *value, int key)
746 u_long noval, *valp = &noval;
749 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
750 caseof(K_MTU, RTV_MTU, rmx_mtu);
751 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
752 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
753 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
754 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
755 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
756 caseof(K_RTT, RTV_RTT, rmx_rtt);
757 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
758 caseof(K_WEIGHT, RTV_WEIGHT, rmx_weight);
761 if (lockrest || locking)
762 rt_metrics.rmx_locks |= flag;
766 *valp = strtol(value, &endptr, 0);
767 if (errno == 0 && *endptr != '\0')
770 err(EX_USAGE, "%s", value);
771 if (flag & RTV_EXPIRE && (value[0] == '+' || value[0] == '-')) {
774 clock_gettime(CLOCK_REALTIME_FAST, &ts);
779 #define F_ISHOST 0x01
780 #define F_FORCENET 0x02
781 #define F_FORCEHOST 0x04
783 #define F_INTERFACE 0x10
786 newroute(int argc, char **argv)
791 const char *dest, *gateway, *errmsg;
792 int key, error, flags, nrflags, fibnum;
794 if (uid != 0 && !debugonly && !tflag)
795 errx(EX_NOPERM, "must be root to alter routing table");
801 TAILQ_INIT(&fibl_head);
804 if (*cmd != 'g' && *cmd != 's')
805 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
807 if (**(++argv)== '-') {
808 switch (key = keyword(1 + *argv)) {
811 aflen = sizeof(struct sockaddr_dl);
817 aflen = sizeof(struct sockaddr_in);
824 aflen = sizeof(struct sockaddr_in6);
829 aflen = sizeof(struct sockaddr_at);
833 aflen = sizeof(struct sockaddr_storage);
837 nrflags |= F_INTERFACE;
840 flags &= ~RTF_STATIC;
849 nrflags |= F_FORCEHOST;
855 flags |= RTF_BLACKHOLE;
870 flags |= RTF_XRESOLVE;
879 flags &= ~RTF_STICKY;
884 error = fiboptlist_csv(*++argv, &fibl_head);
887 "invalid fib number: %s", *argv);
892 getaddr(RTAX_IFA, *++argv, 0, nrflags);
897 getaddr(RTAX_IFP, *++argv, 0, nrflags);
902 getaddr(RTAX_GENMASK, *++argv, 0, nrflags);
907 getaddr(RTAX_GATEWAY, *++argv, 0, nrflags);
913 if (getaddr(RTAX_DST, *++argv, &hp, nrflags))
920 getaddr(RTAX_NETMASK, *++argv, 0, nrflags);
923 nrflags |= F_FORCENET;
928 if (prefixlen(*++argv) == -1) {
929 nrflags &= ~F_FORCENET;
932 nrflags |= F_FORCENET;
933 nrflags &= ~F_ISHOST;
947 set_metric(*++argv, key);
953 if ((rtm_addrs & RTA_DST) == 0) {
955 if (getaddr(RTAX_DST, *argv, &hp, nrflags))
957 } else if ((rtm_addrs & RTA_GATEWAY) == 0) {
959 getaddr(RTAX_GATEWAY, *argv, &hp, nrflags);
961 getaddr(RTAX_NETMASK, *argv, 0, nrflags);
962 nrflags |= F_FORCENET;
967 if (so[RTAX_DST].ss_len == 0) {
968 warnx("destination parameter required");
972 if (nrflags & F_FORCEHOST) {
975 if (af == AF_INET6) {
976 rtm_addrs &= ~RTA_NETMASK;
977 memset(&so[RTAX_NETMASK], 0, sizeof(so[RTAX_NETMASK]));
981 if (nrflags & F_FORCENET)
982 nrflags &= ~F_ISHOST;
984 if (nrflags & F_ISHOST)
986 if ((nrflags & F_INTERFACE) == 0)
987 flags |= RTF_GATEWAY;
988 if (nrflags & F_PROXY)
989 flags |= RTF_ANNOUNCE;
995 if (TAILQ_EMPTY(&fibl_head)) {
996 error = fiboptlist_csv("default", &fibl_head);
998 errx(EX_OSERR, "fiboptlist_csv failed.");
1001 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
1002 fl->fl_error = newroute_fib(fl->fl_num, cmd, flags);
1004 fl->fl_errno = errno;
1005 error += fl->fl_error;
1007 if (*cmd == 'g' || *cmd == 's')
1013 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
1014 if (fl->fl_error == 0)
1020 printf("%s %s %s", cmd,
1021 (nrflags & F_ISHOST) ? "host" : "net", dest);
1023 printf(": gateway %s", gateway);
1026 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
1027 if (fl->fl_error == 0
1028 && fl->fl_num >= 0) {
1033 printf("%d", fl->fl_num);
1043 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
1044 if (fl->fl_error != 0) {
1045 printf("%s %s %s", cmd, (nrflags & F_ISHOST)
1046 ? "host" : "net", dest);
1048 printf(": gateway %s", gateway);
1050 if (fl->fl_num >= 0)
1051 printf(" fib %d", fl->fl_num);
1053 switch (fl->fl_errno) {
1055 errmsg = "not in table";
1058 errmsg = "entry in use";
1061 errmsg = "not enough memory";
1065 * handle recursion avoidance
1068 errmsg = "gateway uses the same route";
1071 errmsg = "route already in table";
1074 errmsg = strerror(fl->fl_errno);
1077 printf(": %s\n", errmsg);
1086 newroute_fib(int fib, char *cmd, int flags)
1090 error = set_sofib(fib);
1092 warn("fib number %d is ignored", fib);
1096 error = rtmsg(*cmd, flags, fib);
1102 inet_makenetandmask(u_long net, struct sockaddr_in *sin,
1103 struct sockaddr_in *sin_mask, u_long bits)
1107 rtm_addrs |= RTA_NETMASK;
1110 * MSB of net should be meaningful. 0/0 is exception.
1113 while ((net & 0xff000000) == 0)
1117 * If no /xx was specified we must calculate the
1120 if ((bits == 0) && (net != 0)) {
1123 for(i = 0, j = 0xff; i < 4; i++) {
1129 /* i holds the first non zero bit */
1133 mask = 0xffffffff << (32 - bits);
1135 sin->sin_addr.s_addr = htonl(net);
1136 sin_mask->sin_addr.s_addr = htonl(mask);
1137 sin_mask->sin_len = sizeof(struct sockaddr_in);
1138 sin_mask->sin_family = AF_INET;
1144 * XXX the function may need more improvement...
1147 inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen)
1149 struct in6_addr in6;
1152 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
1153 sin6->sin6_scope_id == 0) {
1155 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
1156 /* aggregatable global unicast - RFC2374 */
1157 memset(&in6, 0, sizeof(in6));
1158 if (!memcmp(&sin6->sin6_addr.s6_addr[8],
1159 &in6.s6_addr[8], 8))
1164 if (plen == NULL || strcmp(plen, "128") == 0)
1166 rtm_addrs |= RTA_NETMASK;
1173 * Interpret an argument as a network address of some kind,
1174 * returning 1 if a host address, 0 if a network address.
1177 getaddr(int idx, char *str, struct hostent **hpp, int nrflags)
1179 struct sockaddr *sa;
1181 struct sockaddr_in *sin;
1186 #elif defined(INET6)
1190 if (idx < 0 || idx >= RTAX_MAX)
1191 usage("internal error");
1195 aflen = sizeof(struct sockaddr_in);
1196 #elif defined(INET6)
1198 aflen = sizeof(struct sockaddr_in6);
1201 aflen = sizeof(struct sockaddr_dl);
1207 rtm_addrs |= (1 << idx);
1208 sa = (struct sockaddr *)&so[idx];
1214 if (nrflags & F_INTERFACE) {
1215 struct ifaddrs *ifap, *ifa;
1216 struct sockaddr_dl *sdl0 = (struct sockaddr_dl *)(void *)sa;
1217 struct sockaddr_dl *sdl = NULL;
1219 if (getifaddrs(&ifap))
1220 err(EX_OSERR, "getifaddrs");
1222 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
1223 if (ifa->ifa_addr->sa_family != AF_LINK)
1226 if (strcmp(str, ifa->ifa_name) != 0)
1229 sdl = (struct sockaddr_dl *)(void *)ifa->ifa_addr;
1231 /* If we found it, then use it */
1234 * Note that we need to copy before calling
1237 memcpy(sdl0, sdl, sdl->sdl_len);
1245 sa->sa_family = AF_LINK;
1248 if (strcmp(str, "default") == 0) {
1250 * Default is net 0.0.0.0/0
1254 nrflags |= F_FORCENET;
1255 getaddr(RTAX_NETMASK, str, 0, nrflags);
1260 switch (sa->sa_family) {
1264 struct addrinfo hints, *res;
1268 if (idx == RTAX_DST && (q = strchr(str, '/')) != NULL)
1270 memset(&hints, 0, sizeof(hints));
1271 hints.ai_family = sa->sa_family;
1272 hints.ai_socktype = SOCK_DGRAM;
1273 ecode = getaddrinfo(str, NULL, &hints, &res);
1274 if (ecode != 0 || res->ai_family != AF_INET6 ||
1275 res->ai_addrlen != sizeof(struct sockaddr_in6))
1276 errx(EX_OSERR, "%s: %s", str, gai_strerror(ecode));
1277 memcpy(sa, res->ai_addr, res->ai_addrlen);
1281 if (idx == RTAX_DST)
1282 return (inet6_makenetandmask((struct sockaddr_in6 *)(void *)sa, q));
1289 struct sockaddr_at *sat = (struct sockaddr_at *)(void *)sa;
1291 if (!atalk_aton(str, &sat->sat_addr))
1292 errx(EX_NOHOST, "bad address: %s", str);
1293 rtm_addrs |= RTA_NETMASK;
1294 return(nrflags & F_FORCEHOST || sat->sat_addr.s_node != 0);
1297 link_addr(str, (struct sockaddr_dl *)(void *)sa);
1301 sockaddr(str, sa, sizeof(struct sockaddr_storage));
1311 sin = (struct sockaddr_in *)(void *)sa;
1316 q = strchr(str,'/');
1317 if (q != NULL && idx == RTAX_DST) {
1319 if ((val = inet_network(str)) != INADDR_NONE) {
1320 inet_makenetandmask(val, sin,
1321 (struct sockaddr_in *)&so[RTAX_NETMASK],
1322 strtoul(q+1, 0, 0));
1327 if ((idx != RTAX_DST || (nrflags & F_FORCENET) == 0) &&
1328 inet_aton(str, &sin->sin_addr)) {
1329 val = sin->sin_addr.s_addr;
1330 if (idx != RTAX_DST || nrflags & F_FORCEHOST ||
1331 inet_lnaof(sin->sin_addr) != INADDR_ANY)
1338 if (idx == RTAX_DST && (nrflags & F_FORCEHOST) == 0 &&
1339 ((val = inet_network(str)) != INADDR_NONE ||
1340 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) {
1342 inet_makenetandmask(val, sin,
1343 (struct sockaddr_in *)&so[RTAX_NETMASK], 0);
1346 hp = gethostbyname(str);
1349 sin->sin_family = hp->h_addrtype;
1350 memmove((char *)&sin->sin_addr, hp->h_addr,
1351 MIN((size_t)hp->h_length, sizeof(sin->sin_addr)));
1355 errx(EX_NOHOST, "bad address: %s", str);
1359 prefixlen(const char *str)
1361 int len = atoi(str), q, r;
1365 rtm_addrs |= RTA_NETMASK;
1370 struct sockaddr_in6 *sin6 =
1371 (struct sockaddr_in6 *)&so[RTAX_NETMASK];
1374 p = (char *)&sin6->sin6_addr;
1375 sin6->sin6_family = AF_INET6;
1376 sin6->sin6_len = sizeof(*sin6);
1383 struct sockaddr_in *sin =
1384 (struct sockaddr_in *)&so[RTAX_NETMASK];
1387 p = (char *)&sin->sin_addr;
1388 sin->sin_family = AF_INET;
1389 sin->sin_len = sizeof(*sin);
1394 errx(EX_OSERR, "prefixlen not supported in this af");
1397 if (len < 0 || max < len)
1398 errx(EX_USAGE, "%s: invalid prefixlen", str);
1402 memset((void *)p, 0, max / 8);
1404 memset((void *)p, 0xff, q);
1406 *((u_char *)p + q) = (0xff00 >> r) & 0xff;
1418 char *buf, *lim, *next, count = 0;
1419 struct rt_msghdr *rtm;
1424 mib[2] = 0; /* protocol */
1426 mib[4] = NET_RT_IFLIST;
1427 mib[5] = 0; /* no flags */
1428 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0)
1429 err(EX_OSERR, "route-sysctl-estimate");
1430 if ((buf = malloc(needed)) == NULL)
1431 errx(EX_OSERR, "malloc failed");
1432 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) {
1433 if (errno == ENOMEM && count++ < 10) {
1434 warnx("Routing table grew, retrying");
1439 err(EX_OSERR, "actual retrieval of interface table");
1442 for (next = buf; next < lim; next += rtm->rtm_msglen) {
1443 rtm = (struct rt_msghdr *)(void *)next;
1444 print_rtmsg(rtm, rtm->rtm_msglen);
1449 monitor(int argc, char *argv[])
1452 char msg[2048], *endptr;
1460 switch (keyword(*argv + 1)) {
1465 fib = strtol(*++argv, &endptr, 0);
1467 if (*endptr != '\0' ||
1469 (numfibs != -1 && fib > numfibs - 1))
1473 errx(EX_USAGE, "invalid fib number: %s", *argv);
1479 error = set_sofib(fib);
1481 errx(EX_USAGE, "invalid fib number: %d", fib);
1490 n = read(s, msg, 2048);
1492 (void)printf("\ngot message of size %d on %s", n, ctime(&now));
1493 print_rtmsg((struct rt_msghdr *)(void *)msg, n);
1498 struct rt_msghdr m_rtm;
1503 rtmsg(int cmd, int flags, int fib)
1507 char *cp = m_rtmsg.m_space;
1510 #define NEXTADDR(w, u) \
1511 if (rtm_addrs & (w)) { \
1512 l = (((struct sockaddr *)&(u))->sa_len == 0) ? \
1514 1 + ((((struct sockaddr *)&(u))->sa_len - 1) \
1515 | (sizeof(long) - 1)); \
1516 memmove(cp, (char *)&(u), l); \
1519 sodump((struct sockaddr *)&(u), #w); \
1523 memset(&m_rtmsg, 0, sizeof(m_rtmsg));
1526 else if (cmd == 'c')
1528 else if (cmd == 'g' || cmd == 's') {
1530 if (so[RTAX_IFP].ss_family == 0) {
1531 so[RTAX_IFP].ss_family = AF_LINK;
1532 so[RTAX_IFP].ss_len = sizeof(struct sockaddr_dl);
1533 rtm_addrs |= RTA_IFP;
1537 #define rtm m_rtmsg.m_rtm
1539 rtm.rtm_flags = flags;
1540 rtm.rtm_version = RTM_VERSION;
1541 rtm.rtm_seq = ++seq;
1542 rtm.rtm_addrs = rtm_addrs;
1543 rtm.rtm_rmx = rt_metrics;
1544 rtm.rtm_inits = rtm_inits;
1546 NEXTADDR(RTA_DST, so[RTAX_DST]);
1547 NEXTADDR(RTA_GATEWAY, so[RTAX_GATEWAY]);
1548 NEXTADDR(RTA_NETMASK, so[RTAX_NETMASK]);
1549 NEXTADDR(RTA_GENMASK, so[RTAX_GENMASK]);
1550 NEXTADDR(RTA_IFP, so[RTAX_IFP]);
1551 NEXTADDR(RTA_IFA, so[RTAX_IFA]);
1552 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
1554 print_rtmsg(&rtm, l);
1557 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
1559 err(1, "writing to routing socket");
1560 warn("writing to routing socket");
1563 if (cmd == RTM_GET) {
1565 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
1566 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
1568 warn("read from routing socket");
1570 print_getmsg(&rtm, l, fib);
1576 static const char *msgtypes[] = {
1578 "RTM_ADD: Add Route",
1579 "RTM_DELETE: Delete Route",
1580 "RTM_CHANGE: Change Metrics or flags",
1581 "RTM_GET: Report Metrics",
1582 "RTM_LOSING: Kernel Suspects Partitioning",
1583 "RTM_REDIRECT: Told to use different route",
1584 "RTM_MISS: Lookup failed on this address",
1585 "RTM_LOCK: fix specified metrics",
1586 "RTM_OLDADD: caused by SIOCADDRT",
1587 "RTM_OLDDEL: caused by SIOCDELRT",
1588 "RTM_RESOLVE: Route created by cloning",
1589 "RTM_NEWADDR: address being added to iface",
1590 "RTM_DELADDR: address being removed from iface",
1591 "RTM_IFINFO: iface status change",
1592 "RTM_NEWMADDR: new multicast group membership on iface",
1593 "RTM_DELMADDR: multicast group membership removed from iface",
1594 "RTM_IFANNOUNCE: interface arrival/departure",
1595 "RTM_IEEE80211: IEEE 802.11 wireless event",
1598 static const char metricnames[] =
1599 "\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire"
1601 static const char routeflags[] =
1602 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE"
1603 "\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE"
1604 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3"
1605 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY";
1606 static const char ifnetflags[] =
1607 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1608 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1609 "\017LINK2\020MULTICAST";
1610 static const char addrnames[] =
1611 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
1613 static const char errfmt[] =
1614 "\n%s: truncated route message, only %zu bytes left\n";
1617 print_rtmsg(struct rt_msghdr *rtm, size_t msglen)
1619 struct if_msghdr *ifm;
1620 struct ifa_msghdr *ifam;
1622 struct ifma_msghdr *ifmam;
1624 struct if_announcemsghdr *ifan;
1629 if (rtm->rtm_version != RTM_VERSION) {
1630 (void)printf("routing message version %d not understood\n",
1634 if (rtm->rtm_type < nitems(msgtypes))
1635 (void)printf("%s: ", msgtypes[rtm->rtm_type]);
1637 (void)printf("unknown type %d: ", rtm->rtm_type);
1638 (void)printf("len %d, ", rtm->rtm_msglen);
1640 #define REQUIRE(x) do { \
1641 if (msglen < sizeof(x)) \
1644 msglen -= sizeof(x); \
1647 switch (rtm->rtm_type) {
1649 REQUIRE(struct if_msghdr);
1650 ifm = (struct if_msghdr *)rtm;
1651 (void)printf("if# %d, ", ifm->ifm_index);
1652 switch (ifm->ifm_data.ifi_link_state) {
1653 case LINK_STATE_DOWN:
1663 (void)printf("link: %s, flags:", state);
1664 printb(ifm->ifm_flags, ifnetflags);
1665 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs, msglen);
1669 REQUIRE(struct ifa_msghdr);
1670 ifam = (struct ifa_msghdr *)rtm;
1671 (void)printf("metric %d, flags:", ifam->ifam_metric);
1672 printb(ifam->ifam_flags, routeflags);
1673 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs, msglen);
1678 REQUIRE(struct ifma_msghdr);
1679 ifmam = (struct ifma_msghdr *)rtm;
1680 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs, msglen);
1683 case RTM_IFANNOUNCE:
1684 REQUIRE(struct if_announcemsghdr);
1685 ifan = (struct if_announcemsghdr *)rtm;
1686 (void)printf("if# %d, what: ", ifan->ifan_index);
1687 switch (ifan->ifan_what) {
1689 (void)printf("arrival");
1691 case IFAN_DEPARTURE:
1692 printf("departure");
1695 printf("#%d", ifan->ifan_what);
1703 printf("pid: %ld, seq %d, errno %d, flags:",
1704 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1705 printb(rtm->rtm_flags, routeflags);
1706 pmsg_common(rtm, msglen);
1712 (void)printf(errfmt, __func__, msglen);
1717 print_getmsg(struct rt_msghdr *rtm, int msglen, int fib)
1719 struct sockaddr *sp[RTAX_MAX];
1724 memset(sp, 0, sizeof(sp));
1725 (void)printf(" route to: %s\n",
1726 routename((struct sockaddr *)&so[RTAX_DST]));
1727 if (rtm->rtm_version != RTM_VERSION) {
1728 warnx("routing message version %d not understood",
1732 if (rtm->rtm_msglen > msglen) {
1733 warnx("message length mismatch, in packet %d, returned %d",
1734 rtm->rtm_msglen, msglen);
1737 if (rtm->rtm_errno) {
1738 errno = rtm->rtm_errno;
1739 warn("message indicates error %d", errno);
1742 cp = ((char *)(rtm + 1));
1743 for (i = 0; i < RTAX_MAX; i++)
1744 if (rtm->rtm_addrs & (1 << i)) {
1745 sp[i] = (struct sockaddr *)cp;
1746 cp += SA_SIZE((struct sockaddr *)cp);
1748 if ((rtm->rtm_addrs & RTA_IFP) &&
1749 (sp[RTAX_IFP]->sa_family != AF_LINK ||
1750 ((struct sockaddr_dl *)(void *)sp[RTAX_IFP])->sdl_nlen == 0))
1751 sp[RTAX_IFP] = NULL;
1752 if (sp[RTAX_DST] && sp[RTAX_NETMASK])
1753 sp[RTAX_NETMASK]->sa_family = sp[RTAX_DST]->sa_family; /* XXX */
1755 (void)printf("destination: %s\n", routename(sp[RTAX_DST]));
1756 if (sp[RTAX_NETMASK])
1757 (void)printf(" mask: %s\n", routename(sp[RTAX_NETMASK]));
1758 if (sp[RTAX_GATEWAY] && (rtm->rtm_flags & RTF_GATEWAY))
1759 (void)printf(" gateway: %s\n", routename(sp[RTAX_GATEWAY]));
1761 (void)printf(" fib: %u\n", (unsigned int)fib);
1763 (void)printf(" interface: %.*s\n",
1764 ((struct sockaddr_dl *)(void *)sp[RTAX_IFP])->sdl_nlen,
1765 ((struct sockaddr_dl *)(void *)sp[RTAX_IFP])->sdl_data);
1766 (void)printf(" flags: ");
1767 printb(rtm->rtm_flags, routeflags);
1769 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1770 #define msec(u) (((u) + 500) / 1000) /* usec to msec */
1771 printf("\n%9s %9s %9s %9s %9s %10s %9s\n", "recvpipe",
1772 "sendpipe", "ssthresh", "rtt,msec", "mtu ", "weight", "expire");
1773 printf("%8lu%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1774 printf("%8lu%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1775 printf("%8lu%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1776 printf("%8lu%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1777 printf("%8lu%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
1778 printf("%8lu%c ", rtm->rtm_rmx.rmx_weight, lock(WEIGHT));
1779 if (rtm->rtm_rmx.rmx_expire > 0)
1780 clock_gettime(CLOCK_REALTIME_FAST, &ts);
1783 printf("%8ld%c\n", (long)(rtm->rtm_rmx.rmx_expire - ts.tv_sec),
1787 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
1789 pmsg_common(rtm, msglen);
1790 else if (rtm->rtm_addrs &~ RTA_IGN) {
1791 (void)printf("sockaddrs: ");
1792 printb(rtm->rtm_addrs, addrnames);
1799 pmsg_common(struct rt_msghdr *rtm, size_t msglen)
1802 (void)printf("\nlocks: ");
1803 printb(rtm->rtm_rmx.rmx_locks, metricnames);
1804 (void)printf(" inits: ");
1805 printb(rtm->rtm_inits, metricnames);
1806 if (msglen > sizeof(struct rt_msghdr))
1807 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs,
1808 msglen - sizeof(struct rt_msghdr));
1810 (void)fflush(stdout);
1814 pmsg_addrs(char *cp, int addrs, size_t len)
1816 struct sockaddr *sa;
1820 (void)putchar('\n');
1823 (void)printf("\nsockaddrs: ");
1824 printb(addrs, addrnames);
1826 for (i = 0; i < RTAX_MAX; i++)
1827 if (addrs & (1 << i)) {
1828 sa = (struct sockaddr *)cp;
1829 if (len == 0 || len < SA_SIZE(sa)) {
1830 (void)printf(errfmt, __func__, len);
1833 (void)printf(" %s", routename(sa));
1837 (void)putchar('\n');
1838 (void)fflush(stdout);
1842 printb(int b, const char *str)
1849 while ((i = *str++) != 0) {
1850 if (b & (1 << (i-1))) {
1857 for (; (i = *str) > 32; str++)
1868 keyword(const char *cp)
1870 struct keytab *kt = keywords;
1872 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0)
1878 sodump(struct sockaddr *sa, const char *which)
1881 char nbuf[INET6_ADDRSTRLEN];
1884 switch (sa->sa_family) {
1886 (void)printf("%s: link %s; ", which,
1887 link_ntoa((struct sockaddr_dl *)(void *)sa));
1891 (void)printf("%s: inet %s; ", which,
1892 inet_ntoa(((struct sockaddr_in *)(void *)sa)->sin_addr));
1897 (void)printf("%s: inet6 %s; ", which, inet_ntop(sa->sa_family,
1898 &((struct sockaddr_in6 *)(void *)sa)->sin6_addr, nbuf,
1903 (void)printf("%s: atalk %s; ", which,
1904 atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr));
1907 (void)fflush(stdout);
1920 sockaddr(char *addr, struct sockaddr *sa, size_t size)
1922 char *cp = (char *)sa;
1923 char *cplim = cp + size;
1924 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
1926 memset(cp, 0, size);
1929 if ((*addr >= '0') && (*addr <= '9')) {
1931 } else if ((*addr >= 'a') && (*addr <= 'f')) {
1932 new = *addr - 'a' + 10;
1933 } else if ((*addr >= 'A') && (*addr <= 'F')) {
1934 new = *addr - 'A' + 10;
1935 } else if (*addr == '\0')
1940 switch (state /* | INPUT */) {
1941 case GOTTWO | DIGIT:
1942 *cp++ = byte; /*FALLTHROUGH*/
1943 case VIRGIN | DIGIT:
1944 state = GOTONE; byte = new; continue;
1945 case GOTONE | DIGIT:
1946 state = GOTTWO; byte = new + (byte << 4); continue;
1947 default: /* | DELIM */
1948 state = VIRGIN; *cp++ = byte; byte = 0; continue;
1951 *cp++ = byte; /* FALLTHROUGH */
1956 } while (cp < cplim);
1957 sa->sa_len = cp - (char *)sa;
1961 atalk_aton(const char *text, struct at_addr *addr)
1965 if (sscanf(text, "%u.%u", &net, &node) != 2
1966 || net > 0xffff || node > 0xff)
1968 addr->s_net = htons(net);
1969 addr->s_node = node;
1974 atalk_ntoa(struct at_addr at)
1976 static char buf[20];
1978 (void)snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);
1979 buf[sizeof(buf) - 1] = '\0';