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>
73 static struct keytab {
81 static struct sockaddr_storage so[RTAX_MAX];
82 static int pid, rtm_addrs;
84 static int forcehost, forcenet, nflag, af, qflag, tflag;
85 static int verbose, aflen;
86 static int locking, lockrest, debugonly;
87 static struct rt_metrics rt_metrics;
88 static u_long rtm_inits;
90 static int defaultfib;
93 static int atalk_aton(const char *, struct at_addr *);
94 static char *atalk_ntoa(struct at_addr);
95 static void printb(int, const char *);
96 static void flushroutes(int argc, char *argv[]);
97 static int flushroutes_fib(int);
98 static int getaddr(int, char *, struct hostent **, int);
99 static int keyword(const char *);
101 static void inet_makenetandmask(u_long, struct sockaddr_in *,
102 struct sockaddr_in *, u_long);
105 static int inet6_makenetandmask(struct sockaddr_in6 *, const char *);
107 static void interfaces(void);
108 static void monitor(int, char*[]);
109 static const char *netname(struct sockaddr *);
110 static void newroute(int, char **);
111 static int newroute_fib(int, char *, int);
112 static void pmsg_addrs(char *, int, size_t);
113 static void pmsg_common(struct rt_msghdr *, size_t);
114 static int prefixlen(const char *);
115 static void print_getmsg(struct rt_msghdr *, int, int);
116 static void print_rtmsg(struct rt_msghdr *, size_t);
117 static const char *routename(struct sockaddr *);
118 static int rtmsg(int, int, int);
119 static void set_metric(char *, int);
120 static int set_sofib(int);
121 static void sockaddr(char *, struct sockaddr *, size_t);
122 static void sodump(struct sockaddr *, const char *);
125 TAILQ_ENTRY(fibl) fl_next;
131 static TAILQ_HEAD(fibl_head_t, fibl) fibl_head;
133 static int fiboptlist_csv(const char *, struct fibl_head_t *);
134 static int fiboptlist_range(const char *, struct fibl_head_t *);
136 static void usage(const char *) __dead2;
139 usage(const char *cp)
142 warnx("bad keyword: %s", cp);
143 errx(EX_USAGE, "usage: route [-dnqtv] command [[modifiers] args]");
148 main(int argc, char **argv)
156 while ((ch = getopt(argc, argv, "nqdtv")) != -1)
183 s = open(_PATH_DEVNULL, O_WRONLY, 0);
185 s = socket(PF_ROUTE, SOCK_RAW, 0);
187 err(EX_OSERR, "socket");
189 len = sizeof(numfibs);
190 if (sysctlbyname("net.fibs", (void *)&numfibs, &len, NULL, 0) == -1)
193 len = sizeof(defaultfib);
195 sysctlbyname("net.my_fibnum", (void *)&defaultfib, &len, NULL,
200 switch (keyword(*argv)) {
210 newroute(argc, argv);
218 flushroutes(argc, argv);
232 return (setsockopt(s, SOL_SOCKET, SO_SETFIB, (void *)&fib,
237 fiboptlist_range(const char *arg, struct fibl_head_t *flh)
240 char *str0, *str, *token, *endptr;
241 int fib[2], i, error;
243 str0 = str = strdup(arg);
246 while ((token = strsep(&str, "-")) != NULL) {
251 fib[i] = strtol(token, &endptr, 0);
253 if (*endptr != '\0' ||
255 (numfibs != -1 && fib[i] > numfibs - 1))
265 goto fiboptlist_range_ret;
268 if (fib[0] >= fib[1]) {
270 goto fiboptlist_range_ret;
272 for (i = fib[0]; i <= fib[1]; i++) {
273 fl = calloc(1, sizeof(*fl));
276 goto fiboptlist_range_ret;
279 TAILQ_INSERT_TAIL(flh, fl, fl_next);
281 fiboptlist_range_ret:
288 fiboptlist_csv(const char *arg, struct fibl_head_t *flh)
291 char *str0, *str, *token, *endptr;
295 if (strcmp("all", arg) == 0) {
296 str = calloc(1, ALLSTRLEN);
299 goto fiboptlist_csv_ret;
302 snprintf(str, ALLSTRLEN - 1, "%d-%d", 0, numfibs - 1);
304 snprintf(str, ALLSTRLEN - 1, "%d", 0);
305 } else if (strcmp("default", arg) == 0) {
306 str0 = str = calloc(1, ALLSTRLEN);
309 goto fiboptlist_csv_ret;
311 snprintf(str, ALLSTRLEN - 1, "%d", defaultfib);
313 str0 = str = strdup(arg);
316 while ((token = strsep(&str, ",")) != NULL) {
317 if (*token != '-' && strchr(token, '-') != NULL) {
318 error = fiboptlist_range(token, flh);
320 goto fiboptlist_csv_ret;
323 fib = strtol(token, &endptr, 0);
325 if (*endptr != '\0' ||
327 (numfibs != -1 && fib > numfibs - 1))
332 goto fiboptlist_csv_ret;
334 fl = calloc(1, sizeof(*fl));
337 goto fiboptlist_csv_ret;
340 TAILQ_INSERT_TAIL(flh, fl, fl_next);
350 * Purge all entries in the routing tables not
351 * associated with network interfaces.
354 flushroutes(int argc, char *argv[])
359 if (uid != 0 && !debugonly && !tflag)
360 errx(EX_NOPERM, "must be root to alter routing table");
361 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
363 TAILQ_INIT(&fibl_head);
369 switch (keyword(*argv + 1)) {
389 error = fiboptlist_csv(*++argv, &fibl_head);
391 errx(EX_USAGE, "invalid fib number: %s", *argv);
397 if (TAILQ_EMPTY(&fibl_head)) {
398 error = fiboptlist_csv("default", &fibl_head);
400 errx(EX_OSERR, "fiboptlist_csv failed.");
402 TAILQ_FOREACH(fl, &fibl_head, fl_next)
403 flushroutes_fib(fl->fl_num);
407 flushroutes_fib(int fib)
409 struct rt_msghdr *rtm;
411 char *buf, *next, *lim;
412 int mib[7], rlen, seqno, count = 0;
415 error = set_sofib(fib);
417 warn("fib number %d is ignored", fib);
424 mib[2] = 0; /* protocol */
426 mib[4] = NET_RT_DUMP;
427 mib[5] = 0; /* no flags */
429 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0)
430 err(EX_OSERR, "route-sysctl-estimate");
431 if ((buf = malloc(needed)) == NULL)
432 errx(EX_OSERR, "malloc failed");
433 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) {
434 if (errno == ENOMEM && count++ < 10) {
435 warnx("Routing table grew, retrying");
440 err(EX_OSERR, "route-sysctl-get");
444 (void)printf("Examining routing table from sysctl\n");
446 for (next = buf; next < lim; next += rtm->rtm_msglen) {
447 rtm = (struct rt_msghdr *)(void *)next;
449 print_rtmsg(rtm, rtm->rtm_msglen);
450 if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
453 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
455 if (sa->sa_family != af)
460 rtm->rtm_type = RTM_DELETE;
461 rtm->rtm_seq = seqno;
462 rlen = write(s, next, rtm->rtm_msglen);
463 if (rlen < 0 && errno == EPERM)
464 err(1, "write to routing socket");
465 if (rlen < (int)rtm->rtm_msglen) {
466 warn("write to routing socket");
467 (void)printf("got only %d for rlen\n", rlen);
476 print_rtmsg(rtm, rlen);
478 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
480 printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
481 routename(sa) : netname(sa));
482 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa);
483 printf("%-20.20s ", routename(sa));
485 printf("-fib %-3d ", fib);
493 routename(struct sockaddr *sa)
495 struct sockaddr_dl *sdl;
497 static char line[NI_MAXHOST];
498 static char domain[MAXHOSTNAMELEN + 1];
499 static int first = 1, n;
503 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
504 (cp = strchr(domain, '.'))) {
505 domain[MAXHOSTNAMELEN] = '\0';
506 (void)strcpy(domain, cp + 1);
511 /* If the address is zero-filled, use "default". */
512 if (sa->sa_len == 0 && nflag == 0)
514 #if defined(INET) || defined(INET6)
515 switch (sa->sa_family) {
518 /* If the address is zero-filled, use "default". */
520 ((struct sockaddr_in *)(void *)sa)->sin_addr.s_addr ==
527 /* If the address is zero-filled, use "default". */
529 IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)(void *)sa)->sin6_addr))
536 switch (sa->sa_family) {
537 #if defined(INET) || defined(INET6)
545 struct sockaddr_storage ss;
549 memset(&ss, 0, sizeof(ss));
551 ss.ss_family = sa->sa_family;
553 memcpy(&ss, sa, sa->sa_len);
554 /* Expand sa->sa_len because it could be shortened. */
555 if (sa->sa_family == AF_INET)
556 ss.ss_len = sizeof(struct sockaddr_in);
557 else if (sa->sa_family == AF_INET6)
558 ss.ss_len = sizeof(struct sockaddr_in6);
559 error = getnameinfo((struct sockaddr *)&ss, ss.ss_len,
560 line, sizeof(line), NULL, 0,
561 (nflag == 0) ? 0 : NI_NUMERICHOST);
563 warnx("getnameinfo(): %s", gai_strerror(error));
564 strncpy(line, "invalid", sizeof(line));
567 /* Remove the domain part if any. */
568 p = strchr(line, '.');
569 if (p != NULL && strcmp(p + 1, domain) == 0)
577 (void)snprintf(line, sizeof(line), "atalk %s",
578 atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr));
582 sdl = (struct sockaddr_dl *)(void *)sa;
584 if (sdl->sdl_nlen == 0 &&
585 sdl->sdl_alen == 0 &&
586 sdl->sdl_slen == 0) {
587 n = snprintf(line, sizeof(line), "link#%d",
589 if (n > (int)sizeof(line))
593 return (link_ntoa(sdl));
598 u_short *sp = (u_short *)(void *)sa;
599 u_short *splim = sp + ((sa->sa_len + 1) >> 1);
600 char *cps = line + sprintf(line, "(%d)", sa->sa_family);
601 char *cpe = line + sizeof(line);
603 while (++sp < splim && cps < cpe) /* start with sa->sa_data */
604 if ((n = snprintf(cps, cpe - cps, " %x", *sp)) > 0)
615 * Return the name of the network whose address is given.
616 * The address is assumed to be that of a net, not a host.
619 netname(struct sockaddr *sa)
621 struct sockaddr_dl *sdl;
622 static char line[MAXHOSTNAMELEN + 1];
625 struct netent *np = NULL;
626 const char *cp = NULL;
630 switch (sa->sa_family) {
636 in = ((struct sockaddr_in *)(void *)sa)->sin_addr;
637 i = in.s_addr = ntohl(in.s_addr);
641 np = getnetbyaddr(i, AF_INET);
645 #define C(x) (unsigned)((x) & 0xff)
647 strncpy(line, cp, sizeof(line));
648 else if ((in.s_addr & 0xffffff) == 0)
649 (void)sprintf(line, "%u", C(in.s_addr >> 24));
650 else if ((in.s_addr & 0xffff) == 0)
651 (void)sprintf(line, "%u.%u", C(in.s_addr >> 24),
653 else if ((in.s_addr & 0xff) == 0)
654 (void)sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
655 C(in.s_addr >> 16), C(in.s_addr >> 8));
657 (void)sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
658 C(in.s_addr >> 16), C(in.s_addr >> 8),
667 struct sockaddr_in6 sin6;
670 memset(&sin6, 0, sizeof(sin6));
671 memcpy(&sin6, sa, sa->sa_len);
672 sin6.sin6_len = sizeof(sin6);
673 sin6.sin6_family = AF_INET6;
675 niflags |= NI_NUMERICHOST;
676 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
677 line, sizeof(line), NULL, 0, niflags) != 0)
678 strncpy(line, "invalid", sizeof(line));
685 (void)snprintf(line, sizeof(line), "atalk %s",
686 atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr));
690 sdl = (struct sockaddr_dl *)(void *)sa;
692 if (sdl->sdl_nlen == 0 &&
693 sdl->sdl_alen == 0 &&
694 sdl->sdl_slen == 0) {
695 n = snprintf(line, sizeof(line), "link#%d",
697 if (n > (int)sizeof(line))
701 return (link_ntoa(sdl));
706 u_short *sp = (u_short *)(void *)sa->sa_data;
707 u_short *splim = sp + ((sa->sa_len + 1)>>1);
708 char *cps = line + sprintf(line, "af %d:", sa->sa_family);
709 char *cpe = line + sizeof(line);
711 while (sp < splim && cps < cpe)
712 if ((n = snprintf(cps, cpe - cps, " %x", *sp++)) > 0)
723 set_metric(char *value, int key)
726 u_long noval, *valp = &noval;
729 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
730 caseof(K_MTU, RTV_MTU, rmx_mtu);
731 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
732 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
733 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
734 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
735 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
736 caseof(K_RTT, RTV_RTT, rmx_rtt);
737 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
738 caseof(K_WEIGHT, RTV_WEIGHT, rmx_weight);
741 if (lockrest || locking)
742 rt_metrics.rmx_locks |= flag;
748 #define F_ISHOST 0x01
749 #define F_FORCENET 0x02
750 #define F_FORCEHOST 0x04
752 #define F_INTERFACE 0x10
755 newroute(int argc, char **argv)
760 const char *dest, *gateway, *errmsg;
761 int key, error, flags, nrflags, fibnum;
763 if (uid != 0 && !debugonly && !tflag)
764 errx(EX_NOPERM, "must be root to alter routing table");
770 TAILQ_INIT(&fibl_head);
773 if (*cmd != 'g' && *cmd != 's')
774 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
776 if (**(++argv)== '-') {
777 switch (key = keyword(1 + *argv)) {
780 aflen = sizeof(struct sockaddr_dl);
785 aflen = sizeof(struct sockaddr_in);
791 aflen = sizeof(struct sockaddr_in6);
796 aflen = sizeof(struct sockaddr_at);
800 aflen = sizeof(struct sockaddr_storage);
804 nrflags |= F_INTERFACE;
807 flags &= ~RTF_STATIC;
816 nrflags |= F_FORCEHOST;
822 flags |= RTF_BLACKHOLE;
834 flags |= RTF_XRESOLVE;
843 flags &= ~RTF_STICKY;
848 error = fiboptlist_csv(*++argv, &fibl_head);
851 "invalid fib number: %s", *argv);
856 getaddr(RTAX_IFA, *++argv, 0, nrflags);
861 getaddr(RTAX_IFP, *++argv, 0, nrflags);
866 getaddr(RTAX_GENMASK, *++argv, 0, nrflags);
871 getaddr(RTAX_GATEWAY, *++argv, 0, nrflags);
877 if (getaddr(RTAX_DST, *++argv, &hp, nrflags))
884 getaddr(RTAX_NETMASK, *++argv, 0, nrflags);
887 nrflags |= F_FORCENET;
892 if (prefixlen(*++argv) == -1) {
893 nrflags &= ~F_FORCENET;
896 nrflags |= F_FORCENET;
897 nrflags &= ~F_ISHOST;
911 set_metric(*++argv, key);
917 if ((rtm_addrs & RTA_DST) == 0) {
919 if (getaddr(RTAX_DST, *argv, &hp, nrflags))
921 } else if ((rtm_addrs & RTA_GATEWAY) == 0) {
923 getaddr(RTAX_GATEWAY, *argv, &hp, nrflags);
925 getaddr(RTAX_NETMASK, *argv, 0, nrflags);
926 nrflags |= F_FORCENET;
931 if (so[RTAX_DST].ss_len == 0) {
932 warnx("destination parameter required");
936 if (nrflags & F_FORCEHOST) {
939 if (af == AF_INET6) {
940 rtm_addrs &= ~RTA_NETMASK;
941 memset(&so[RTAX_NETMASK], 0, sizeof(so[RTAX_NETMASK]));
945 if (nrflags & F_FORCENET)
946 nrflags &= ~F_ISHOST;
948 if (nrflags & F_ISHOST)
950 if ((nrflags & F_INTERFACE) == 0)
951 flags |= RTF_GATEWAY;
952 if (nrflags & F_PROXY)
953 flags |= RTF_ANNOUNCE;
959 if (TAILQ_EMPTY(&fibl_head)) {
960 error = fiboptlist_csv("default", &fibl_head);
962 errx(EX_OSERR, "fiboptlist_csv failed.");
965 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
966 fl->fl_error = newroute_fib(fl->fl_num, cmd, flags);
968 fl->fl_errno = errno;
969 error += fl->fl_error;
971 if (*cmd == 'g' || *cmd == 's')
977 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
978 if (fl->fl_error == 0)
984 printf("%s %s %s", cmd,
985 (nrflags & F_ISHOST) ? "host" : "net", dest);
987 printf(": gateway %s", gateway);
990 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
991 if (fl->fl_error == 0
992 && fl->fl_num >= 0) {
997 printf("%d", fl->fl_num);
1007 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
1008 if (fl->fl_error != 0) {
1009 printf("%s %s %s", cmd, (nrflags & F_ISHOST)
1010 ? "host" : "net", dest);
1012 printf(": gateway %s", gateway);
1014 if (fl->fl_num >= 0)
1015 printf(" fib %d", fl->fl_num);
1017 switch (fl->fl_errno) {
1019 errmsg = "not in table";
1022 errmsg = "entry in use";
1025 errmsg = "not enough memory";
1029 * handle recursion avoidance
1032 errmsg = "gateway uses the same route";
1035 errmsg = "route already in table";
1038 errmsg = strerror(fl->fl_errno);
1041 printf(": %s\n", errmsg);
1050 newroute_fib(int fib, char *cmd, int flags)
1054 error = set_sofib(fib);
1056 warn("fib number %d is ignored", fib);
1060 error = rtmsg(*cmd, flags, fib);
1066 inet_makenetandmask(u_long net, struct sockaddr_in *sin,
1067 struct sockaddr_in *sin_mask, u_long bits)
1071 rtm_addrs |= RTA_NETMASK;
1074 * MSB of net should be meaningful. 0/0 is exception.
1077 while ((net & 0xff000000) == 0)
1081 * If no /xx was specified we must calculate the
1084 if ((bits == 0) && (net != 0)) {
1087 for(i = 0, j = 0xff; i < 4; i++) {
1093 /* i holds the first non zero bit */
1097 mask = 0xffffffff << (32 - bits);
1099 sin->sin_addr.s_addr = htonl(net);
1100 sin_mask->sin_addr.s_addr = htonl(mask);
1101 sin_mask->sin_len = sizeof(struct sockaddr_in);
1102 sin_mask->sin_family = AF_INET;
1108 * XXX the function may need more improvement...
1111 inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen)
1113 struct in6_addr in6;
1116 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
1117 sin6->sin6_scope_id == 0) {
1119 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
1120 /* aggregatable global unicast - RFC2374 */
1121 memset(&in6, 0, sizeof(in6));
1122 if (!memcmp(&sin6->sin6_addr.s6_addr[8],
1123 &in6.s6_addr[8], 8))
1128 if (plen == NULL || strcmp(plen, "128") == 0)
1130 rtm_addrs |= RTA_NETMASK;
1137 * Interpret an argument as a network address of some kind,
1138 * returning 1 if a host address, 0 if a network address.
1141 getaddr(int idx, char *str, struct hostent **hpp, int nrflags)
1143 struct sockaddr *sa;
1145 struct sockaddr_in *sin;
1150 #elif defined(INET6)
1154 if (idx < 0 || idx >= RTAX_MAX)
1155 usage("internal error");
1159 aflen = sizeof(struct sockaddr_in);
1160 #elif defined(INET6)
1162 aflen = sizeof(struct sockaddr_in6);
1165 aflen = sizeof(struct sockaddr_dl);
1171 rtm_addrs |= (1 << idx);
1172 sa = (struct sockaddr *)&so[idx];
1178 if (nrflags & F_INTERFACE) {
1179 struct ifaddrs *ifap, *ifa;
1180 struct sockaddr_dl *sdl0 = (struct sockaddr_dl *)(void *)sa;
1181 struct sockaddr_dl *sdl = NULL;
1183 if (getifaddrs(&ifap))
1184 err(EX_OSERR, "getifaddrs");
1186 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
1187 if (ifa->ifa_addr->sa_family != AF_LINK)
1190 if (strcmp(str, ifa->ifa_name) != 0)
1193 sdl = (struct sockaddr_dl *)(void *)ifa->ifa_addr;
1195 /* If we found it, then use it */
1198 * Note that we need to copy before calling
1201 memcpy(sdl0, sdl, sdl->sdl_len);
1209 sa->sa_family = AF_LINK;
1212 if (strcmp(str, "default") == 0) {
1214 * Default is net 0.0.0.0/0
1219 getaddr(RTAX_NETMASK, str, 0, nrflags);
1224 switch (sa->sa_family) {
1228 struct addrinfo hints, *res;
1232 if (idx == RTAX_DST && (q = strchr(str, '/')) != NULL)
1234 memset(&hints, 0, sizeof(hints));
1235 hints.ai_family = sa->sa_family;
1236 hints.ai_socktype = SOCK_DGRAM;
1237 ecode = getaddrinfo(str, NULL, &hints, &res);
1238 if (ecode != 0 || res->ai_family != AF_INET6 ||
1239 res->ai_addrlen != sizeof(struct sockaddr_in6))
1240 errx(EX_OSERR, "%s: %s", str, gai_strerror(ecode));
1241 memcpy(sa, res->ai_addr, res->ai_addrlen);
1245 if (idx == RTAX_DST)
1246 return (inet6_makenetandmask((struct sockaddr_in6 *)(void *)sa, q));
1253 struct sockaddr_at *sat = (struct sockaddr_at *)(void *)sa;
1255 if (!atalk_aton(str, &sat->sat_addr))
1256 errx(EX_NOHOST, "bad address: %s", str);
1257 rtm_addrs |= RTA_NETMASK;
1258 return(forcehost || sat->sat_addr.s_node != 0);
1261 link_addr(str, (struct sockaddr_dl *)(void *)sa);
1265 sockaddr(str, sa, sizeof(struct sockaddr_storage));
1275 sin = (struct sockaddr_in *)(void *)sa;
1280 q = strchr(str,'/');
1281 if (q != NULL && idx == RTAX_DST) {
1283 if ((val = inet_network(str)) != INADDR_NONE) {
1284 inet_makenetandmask(val, sin,
1285 (struct sockaddr_in *)&so[RTAX_NETMASK],
1286 strtoul(q+1, 0, 0));
1291 if ((idx != RTAX_DST || forcenet == 0) &&
1292 inet_aton(str, &sin->sin_addr)) {
1293 val = sin->sin_addr.s_addr;
1294 if (idx != RTAX_DST || forcehost ||
1295 inet_lnaof(sin->sin_addr) != INADDR_ANY)
1302 if (idx == RTAX_DST && forcehost == 0 &&
1303 ((val = inet_network(str)) != INADDR_NONE ||
1304 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) {
1306 inet_makenetandmask(val, sin,
1307 (struct sockaddr_in *)&so[RTAX_NETMASK], 0);
1310 hp = gethostbyname(str);
1313 sin->sin_family = hp->h_addrtype;
1314 memmove((char *)&sin->sin_addr, hp->h_addr,
1315 MIN((size_t)hp->h_length, sizeof(sin->sin_addr)));
1319 errx(EX_NOHOST, "bad address: %s", str);
1323 prefixlen(const char *str)
1325 int len = atoi(str), q, r;
1329 rtm_addrs |= RTA_NETMASK;
1334 struct sockaddr_in6 *sin6 =
1335 (struct sockaddr_in6 *)&so[RTAX_NETMASK];
1338 p = (char *)&sin6->sin6_addr;
1339 sin6->sin6_family = AF_INET6;
1340 sin6->sin6_len = sizeof(*sin6);
1347 struct sockaddr_in *sin =
1348 (struct sockaddr_in *)&so[RTAX_NETMASK];
1351 p = (char *)&sin->sin_addr;
1352 sin->sin_family = AF_INET;
1353 sin->sin_len = sizeof(*sin);
1358 errx(EX_OSERR, "prefixlen not supported in this af");
1361 if (len < 0 || max < len)
1362 errx(EX_USAGE, "%s: invalid prefixlen", str);
1366 memset((void *)p, 0, max / 8);
1368 memset((void *)p, 0xff, q);
1370 *((u_char *)p + q) = (0xff00 >> r) & 0xff;
1382 char *buf, *lim, *next, count = 0;
1383 struct rt_msghdr *rtm;
1388 mib[2] = 0; /* protocol */
1390 mib[4] = NET_RT_IFLIST;
1391 mib[5] = 0; /* no flags */
1392 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0)
1393 err(EX_OSERR, "route-sysctl-estimate");
1394 if ((buf = malloc(needed)) == NULL)
1395 errx(EX_OSERR, "malloc failed");
1396 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) {
1397 if (errno == ENOMEM && count++ < 10) {
1398 warnx("Routing table grew, retrying");
1403 err(EX_OSERR, "actual retrieval of interface table");
1406 for (next = buf; next < lim; next += rtm->rtm_msglen) {
1407 rtm = (struct rt_msghdr *)(void *)next;
1408 print_rtmsg(rtm, rtm->rtm_msglen);
1413 monitor(int argc, char *argv[])
1416 char msg[2048], *endptr;
1424 switch (keyword(*argv + 1)) {
1429 fib = strtol(*++argv, &endptr, 0);
1431 if (*endptr != '\0' ||
1433 (numfibs != -1 && fib > numfibs - 1))
1437 errx(EX_USAGE, "invalid fib number: %s", *argv);
1443 error = set_sofib(fib);
1445 errx(EX_USAGE, "invalid fib number: %d", fib);
1454 n = read(s, msg, 2048);
1456 (void)printf("\ngot message of size %d on %s", n, ctime(&now));
1457 print_rtmsg((struct rt_msghdr *)(void *)msg, n);
1462 struct rt_msghdr m_rtm;
1467 rtmsg(int cmd, int flags, int fib)
1471 char *cp = m_rtmsg.m_space;
1474 #define NEXTADDR(w, u) \
1475 if (rtm_addrs & (w)) { \
1476 l = (((struct sockaddr *)&(u))->sa_len == 0) ? \
1478 1 + ((((struct sockaddr *)&(u))->sa_len - 1) \
1479 | (sizeof(long) - 1)); \
1480 memmove(cp, (char *)&(u), l); \
1483 sodump((struct sockaddr *)&(u), #w); \
1487 memset(&m_rtmsg, 0, sizeof(m_rtmsg));
1490 else if (cmd == 'c')
1492 else if (cmd == 'g' || cmd == 's') {
1494 if (so[RTAX_IFP].ss_family == 0) {
1495 so[RTAX_IFP].ss_family = AF_LINK;
1496 so[RTAX_IFP].ss_len = sizeof(struct sockaddr_dl);
1497 rtm_addrs |= RTA_IFP;
1501 #define rtm m_rtmsg.m_rtm
1503 rtm.rtm_flags = flags;
1504 rtm.rtm_version = RTM_VERSION;
1505 rtm.rtm_seq = ++seq;
1506 rtm.rtm_addrs = rtm_addrs;
1507 rtm.rtm_rmx = rt_metrics;
1508 rtm.rtm_inits = rtm_inits;
1510 NEXTADDR(RTA_DST, so[RTAX_DST]);
1511 NEXTADDR(RTA_GATEWAY, so[RTAX_GATEWAY]);
1512 NEXTADDR(RTA_NETMASK, so[RTAX_NETMASK]);
1513 NEXTADDR(RTA_GENMASK, so[RTAX_GENMASK]);
1514 NEXTADDR(RTA_IFP, so[RTAX_IFP]);
1515 NEXTADDR(RTA_IFA, so[RTAX_IFA]);
1516 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
1518 print_rtmsg(&rtm, l);
1521 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
1523 err(1, "writing to routing socket");
1524 warn("writing to routing socket");
1527 if (cmd == RTM_GET) {
1529 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
1530 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
1532 warn("read from routing socket");
1534 print_getmsg(&rtm, l, fib);
1540 static const char *msgtypes[] = {
1542 "RTM_ADD: Add Route",
1543 "RTM_DELETE: Delete Route",
1544 "RTM_CHANGE: Change Metrics or flags",
1545 "RTM_GET: Report Metrics",
1546 "RTM_LOSING: Kernel Suspects Partitioning",
1547 "RTM_REDIRECT: Told to use different route",
1548 "RTM_MISS: Lookup failed on this address",
1549 "RTM_LOCK: fix specified metrics",
1550 "RTM_OLDADD: caused by SIOCADDRT",
1551 "RTM_OLDDEL: caused by SIOCDELRT",
1552 "RTM_RESOLVE: Route created by cloning",
1553 "RTM_NEWADDR: address being added to iface",
1554 "RTM_DELADDR: address being removed from iface",
1555 "RTM_IFINFO: iface status change",
1556 "RTM_NEWMADDR: new multicast group membership on iface",
1557 "RTM_DELMADDR: multicast group membership removed from iface",
1558 "RTM_IFANNOUNCE: interface arrival/departure",
1559 "RTM_IEEE80211: IEEE 802.11 wireless event",
1562 static const char metricnames[] =
1563 "\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire"
1565 static const char routeflags[] =
1566 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE"
1567 "\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE"
1568 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3"
1569 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY";
1570 static const char ifnetflags[] =
1571 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1572 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1573 "\017LINK2\020MULTICAST";
1574 static const char addrnames[] =
1575 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
1577 static const char errfmt[] =
1578 "\n%s: truncated route message, only %zu bytes left\n";
1581 print_rtmsg(struct rt_msghdr *rtm, size_t msglen)
1583 struct if_msghdr *ifm;
1584 struct ifa_msghdr *ifam;
1586 struct ifma_msghdr *ifmam;
1588 struct if_announcemsghdr *ifan;
1593 if (rtm->rtm_version != RTM_VERSION) {
1594 (void)printf("routing message version %d not understood\n",
1598 if (rtm->rtm_type < nitems(msgtypes))
1599 (void)printf("%s: ", msgtypes[rtm->rtm_type]);
1601 (void)printf("unknown type %d: ", rtm->rtm_type);
1602 (void)printf("len %d, ", rtm->rtm_msglen);
1604 #define REQUIRE(x) do { \
1605 if (msglen < sizeof(x)) \
1608 msglen -= sizeof(x); \
1611 switch (rtm->rtm_type) {
1613 REQUIRE(struct if_msghdr);
1614 ifm = (struct if_msghdr *)rtm;
1615 (void)printf("if# %d, ", ifm->ifm_index);
1616 switch (ifm->ifm_data.ifi_link_state) {
1617 case LINK_STATE_DOWN:
1627 (void)printf("link: %s, flags:", state);
1628 printb(ifm->ifm_flags, ifnetflags);
1629 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs, msglen);
1633 REQUIRE(struct ifa_msghdr);
1634 ifam = (struct ifa_msghdr *)rtm;
1635 (void)printf("metric %d, flags:", ifam->ifam_metric);
1636 printb(ifam->ifam_flags, routeflags);
1637 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs, msglen);
1642 REQUIRE(struct ifma_msghdr);
1643 ifmam = (struct ifma_msghdr *)rtm;
1644 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs, msglen);
1647 case RTM_IFANNOUNCE:
1648 REQUIRE(struct if_announcemsghdr);
1649 ifan = (struct if_announcemsghdr *)rtm;
1650 (void)printf("if# %d, what: ", ifan->ifan_index);
1651 switch (ifan->ifan_what) {
1653 (void)printf("arrival");
1655 case IFAN_DEPARTURE:
1656 printf("departure");
1659 printf("#%d", ifan->ifan_what);
1667 printf("pid: %ld, seq %d, errno %d, flags:",
1668 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1669 printb(rtm->rtm_flags, routeflags);
1670 pmsg_common(rtm, msglen);
1676 (void)printf(errfmt, __func__, msglen);
1681 print_getmsg(struct rt_msghdr *rtm, int msglen, int fib)
1683 struct sockaddr *sp[RTAX_MAX];
1687 memset(sp, 0, sizeof(sp));
1688 (void)printf(" route to: %s\n",
1689 routename((struct sockaddr *)&so[RTAX_DST]));
1690 if (rtm->rtm_version != RTM_VERSION) {
1691 warnx("routing message version %d not understood",
1695 if (rtm->rtm_msglen > msglen) {
1696 warnx("message length mismatch, in packet %d, returned %d",
1697 rtm->rtm_msglen, msglen);
1700 if (rtm->rtm_errno) {
1701 errno = rtm->rtm_errno;
1702 warn("message indicates error %d", errno);
1705 cp = ((char *)(rtm + 1));
1706 for (i = 0; i < RTAX_MAX; i++)
1707 if (rtm->rtm_addrs & (1 << i)) {
1708 sp[i] = (struct sockaddr *)cp;
1709 cp += SA_SIZE((struct sockaddr *)cp);
1711 if ((rtm->rtm_addrs & RTA_IFP) &&
1712 (sp[RTAX_IFP]->sa_family != AF_LINK ||
1713 ((struct sockaddr_dl *)(void *)sp[RTAX_IFP])->sdl_nlen == 0))
1714 sp[RTAX_IFP] = NULL;
1715 if (sp[RTAX_DST] && sp[RTAX_NETMASK])
1716 sp[RTAX_NETMASK]->sa_family = sp[RTAX_DST]->sa_family; /* XXX */
1718 (void)printf("destination: %s\n", routename(sp[RTAX_DST]));
1719 if (sp[RTAX_NETMASK])
1720 (void)printf(" mask: %s\n", routename(sp[RTAX_NETMASK]));
1721 if (sp[RTAX_GATEWAY] && (rtm->rtm_flags & RTF_GATEWAY))
1722 (void)printf(" gateway: %s\n", routename(sp[RTAX_GATEWAY]));
1724 (void)printf(" fib: %u\n", (unsigned int)fib);
1726 (void)printf(" interface: %.*s\n",
1727 ((struct sockaddr_dl *)(void *)sp[RTAX_IFP])->sdl_nlen,
1728 ((struct sockaddr_dl *)(void *)sp[RTAX_IFP])->sdl_data);
1729 (void)printf(" flags: ");
1730 printb(rtm->rtm_flags, routeflags);
1732 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1733 #define msec(u) (((u) + 500) / 1000) /* usec to msec */
1734 printf("\n%9s %9s %9s %9s %9s %10s %9s\n", "recvpipe",
1735 "sendpipe", "ssthresh", "rtt,msec", "mtu ", "weight", "expire");
1736 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1737 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1738 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1739 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1740 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
1741 printf("%8ld%c ", rtm->rtm_rmx.rmx_weight, lock(WEIGHT));
1742 if (rtm->rtm_rmx.rmx_expire)
1743 rtm->rtm_rmx.rmx_expire -= time(0);
1744 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
1747 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
1749 pmsg_common(rtm, msglen);
1750 else if (rtm->rtm_addrs &~ RTA_IGN) {
1751 (void)printf("sockaddrs: ");
1752 printb(rtm->rtm_addrs, addrnames);
1759 pmsg_common(struct rt_msghdr *rtm, size_t msglen)
1762 (void)printf("\nlocks: ");
1763 printb(rtm->rtm_rmx.rmx_locks, metricnames);
1764 (void)printf(" inits: ");
1765 printb(rtm->rtm_inits, metricnames);
1766 if (msglen > sizeof(struct rt_msghdr))
1767 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs,
1768 msglen - sizeof(struct rt_msghdr));
1770 (void)fflush(stdout);
1774 pmsg_addrs(char *cp, int addrs, size_t len)
1776 struct sockaddr *sa;
1780 (void)putchar('\n');
1783 (void)printf("\nsockaddrs: ");
1784 printb(addrs, addrnames);
1786 for (i = 0; i < RTAX_MAX; i++)
1787 if (addrs & (1 << i)) {
1788 sa = (struct sockaddr *)cp;
1789 if (len == 0 || len < SA_SIZE(sa)) {
1790 (void)printf(errfmt, __func__, len);
1793 (void)printf(" %s", routename(sa));
1797 (void)putchar('\n');
1798 (void)fflush(stdout);
1802 printb(int b, const char *str)
1809 while ((i = *str++) != 0) {
1810 if (b & (1 << (i-1))) {
1817 for (; (i = *str) > 32; str++)
1828 keyword(const char *cp)
1830 struct keytab *kt = keywords;
1832 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0)
1838 sodump(struct sockaddr *sa, const char *which)
1841 char nbuf[INET6_ADDRSTRLEN];
1844 switch (sa->sa_family) {
1846 (void)printf("%s: link %s; ", which,
1847 link_ntoa((struct sockaddr_dl *)(void *)sa));
1851 (void)printf("%s: inet %s; ", which,
1852 inet_ntoa(((struct sockaddr_in *)(void *)sa)->sin_addr));
1857 (void)printf("%s: inet6 %s; ", which, inet_ntop(sa->sa_family,
1858 &((struct sockaddr_in6 *)(void *)sa)->sin6_addr, nbuf,
1863 (void)printf("%s: atalk %s; ", which,
1864 atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr));
1867 (void)fflush(stdout);
1880 sockaddr(char *addr, struct sockaddr *sa, size_t size)
1882 char *cp = (char *)sa;
1883 char *cplim = cp + size;
1884 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
1886 memset(cp, 0, size);
1889 if ((*addr >= '0') && (*addr <= '9')) {
1891 } else if ((*addr >= 'a') && (*addr <= 'f')) {
1892 new = *addr - 'a' + 10;
1893 } else if ((*addr >= 'A') && (*addr <= 'F')) {
1894 new = *addr - 'A' + 10;
1895 } else if (*addr == '\0')
1900 switch (state /* | INPUT */) {
1901 case GOTTWO | DIGIT:
1902 *cp++ = byte; /*FALLTHROUGH*/
1903 case VIRGIN | DIGIT:
1904 state = GOTONE; byte = new; continue;
1905 case GOTONE | DIGIT:
1906 state = GOTTWO; byte = new + (byte << 4); continue;
1907 default: /* | DELIM */
1908 state = VIRGIN; *cp++ = byte; byte = 0; continue;
1911 *cp++ = byte; /* FALLTHROUGH */
1916 } while (cp < cplim);
1917 sa->sa_len = cp - (char *)sa;
1921 atalk_aton(const char *text, struct at_addr *addr)
1925 if (sscanf(text, "%u.%u", &net, &node) != 2
1926 || net > 0xffff || node > 0xff)
1928 addr->s_net = htons(net);
1929 addr->s_node = node;
1934 atalk_ntoa(struct at_addr at)
1936 static char buf[20];
1938 (void)snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);
1939 buf[sizeof(buf) - 1] = '\0';