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";
40 static const char rcsid[] =
44 #include <sys/param.h>
46 #include <sys/socket.h>
47 #include <sys/ioctl.h>
48 #include <sys/sysctl.h>
49 #include <sys/types.h>
52 #include <net/route.h>
53 #include <net/if_dl.h>
54 #include <netinet/in.h>
55 #include <netinet/if_ether.h>
56 #include <netatalk/at.h>
57 #include <arpa/inet.h>
79 struct ortentry route;
82 struct sockaddr_in sin;
84 struct sockaddr_in6 sin6;
86 struct sockaddr_at sat;
87 struct sockaddr_dl sdl;
88 struct sockaddr_inarp sinarp;
89 struct sockaddr_storage ss; /* added to avoid memory overrun */
90 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp;
92 typedef union sockunion *sup;
95 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword();
96 int iflag, verbose, aflen = sizeof (struct sockaddr_in);
97 int locking, lockrest, debugonly;
98 struct rt_metrics rt_metrics;
101 int atalk_aton(const char *, struct at_addr *);
102 char *atalk_ntoa(struct at_addr);
103 const char *routename(), *netname();
104 void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf();
105 void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr();
107 static int inet6_makenetandmask(struct sockaddr_in6 *, char *);
109 int getaddr(), rtmsg(), x25_makemask();
111 extern char *iso_ntoa();
113 void usage(const char *) __dead2;
120 warnx("bad keyword: %s", cp);
121 (void) fprintf(stderr,
122 "usage: route [-dnqtv] command [[modifiers] args]\n");
137 while ((ch = getopt(argc, argv, "nqdtv")) != -1)
164 s = open(_PATH_DEVNULL, O_WRONLY, 0);
166 s = socket(PF_ROUTE, SOCK_RAW, 0);
168 err(EX_OSERR, "socket");
170 switch (keyword(*argv)) {
179 newroute(argc, argv);
187 flushroutes(argc, argv);
196 * Purge all entries in the routing tables not
197 * associated with network interfaces.
200 flushroutes(argc, argv)
205 int mib[6], rlen, seqno, count = 0;
206 char *buf, *next, *lim;
207 struct rt_msghdr *rtm;
209 if (uid && !debugonly) {
210 errx(EX_NOPERM, "must be root to alter routing table");
212 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
215 if (argc == 2 && **argv == '-')
216 switch (keyword(*argv + 1)) {
239 mib[2] = 0; /* protocol */
240 mib[3] = 0; /* wildcard address family */
241 mib[4] = NET_RT_DUMP;
242 mib[5] = 0; /* no flags */
243 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
244 err(EX_OSERR, "route-sysctl-estimate");
245 if ((buf = malloc(needed)) == NULL)
246 errx(EX_OSERR, "malloc failed");
247 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
248 if (errno == ENOMEM && count++ < 10) {
249 warnx("Routing table grew, retrying");
254 err(EX_OSERR, "route-sysctl-get");
258 (void) printf("Examining routing table from sysctl\n");
260 for (next = buf; next < lim; next += rtm->rtm_msglen) {
261 rtm = (struct rt_msghdr *)next;
263 print_rtmsg(rtm, rtm->rtm_msglen);
264 if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
267 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
269 if (sa->sa_family != af)
274 rtm->rtm_type = RTM_DELETE;
275 rtm->rtm_seq = seqno;
276 rlen = write(s, next, rtm->rtm_msglen);
277 if (rlen < 0 && errno == EPERM)
278 err(1, "write to routing socket");
279 if (rlen < (int)rtm->rtm_msglen) {
280 warn("write to routing socket");
281 (void) printf("got only %d for rlen\n", rlen);
290 print_rtmsg(rtm, rlen);
292 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
293 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
294 routename(sa) : netname(sa));
295 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa);
296 (void) printf("%-20.20s ", routename(sa));
297 (void) printf("done\n");
307 static char line[MAXHOSTNAMELEN + 1];
309 static char domain[MAXHOSTNAMELEN + 1];
310 static int first = 1, n;
314 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
315 (cp = strchr(domain, '.'))) {
316 domain[MAXHOSTNAMELEN] = '\0';
317 (void) strcpy(domain, cp + 1);
323 strcpy(line, "default");
324 else switch (sa->sa_family) {
328 in = ((struct sockaddr_in *)sa)->sin_addr;
331 if (in.s_addr == INADDR_ANY || sa->sa_len < 4)
333 if (cp == 0 && !nflag) {
334 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
337 if ((cp = strchr(hp->h_name, '.')) &&
338 !strcmp(cp + 1, domain))
344 strncpy(line, cp, sizeof(line) - 1);
345 line[sizeof(line) - 1] = '\0';
347 (void) sprintf(line, "%s", inet_ntoa(in));
354 struct sockaddr_in6 sin6; /* use static var for safety */
357 memset(&sin6, 0, sizeof(sin6));
358 memcpy(&sin6, sa, sa->sa_len);
359 sin6.sin6_len = sizeof(struct sockaddr_in6);
360 sin6.sin6_family = AF_INET6;
362 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
363 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
364 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
365 sin6.sin6_scope_id == 0) {
367 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
368 sin6.sin6_addr.s6_addr[2] = 0;
369 sin6.sin6_addr.s6_addr[3] = 0;
373 niflags |= NI_NUMERICHOST;
374 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
375 line, sizeof(line), NULL, 0, niflags) != 0)
376 strncpy(line, "invalid", sizeof(line));
383 (void) snprintf(line, sizeof(line), "atalk %s",
384 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
388 return (link_ntoa((struct sockaddr_dl *)sa));
391 { u_short *s = (u_short *)sa;
392 u_short *slim = s + ((sa->sa_len + 1) >> 1);
393 char *cp = line + sprintf(line, "(%d)", sa->sa_family);
394 char *cpe = line + sizeof(line);
396 while (++s < slim && cp < cpe) /* start with sa->sa_data */
397 if ((n = snprintf(cp, cpe - cp, " %x", *s)) > 0)
408 * Return the name of the network whose address is given.
409 * The address is assumed to be that of a net or subnet, not a host.
416 static char line[MAXHOSTNAMELEN + 1];
417 struct netent *np = 0;
422 switch (sa->sa_family) {
426 in = ((struct sockaddr_in *)sa)->sin_addr;
428 i = in.s_addr = ntohl(in.s_addr);
433 mask = IN_CLASSA_NET;
435 } else if (IN_CLASSB(i)) {
436 mask = IN_CLASSB_NET;
439 mask = IN_CLASSC_NET;
443 * If there are more bits than the standard mask
444 * would suggest, subnets must be in use.
445 * Guess at the subnet mask, assuming reasonable
446 * width subnet fields.
448 while (in.s_addr &~ mask)
449 mask = (long)mask >> subnetshift;
450 net = in.s_addr & mask;
451 while ((mask & 1) == 0)
452 mask >>= 1, net >>= 1;
453 np = getnetbyaddr(net, AF_INET);
457 #define C(x) (unsigned)((x) & 0xff)
459 strncpy(line, cp, sizeof(line));
460 else if ((in.s_addr & 0xffffff) == 0)
461 (void) sprintf(line, "%u", C(in.s_addr >> 24));
462 else if ((in.s_addr & 0xffff) == 0)
463 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24),
465 else if ((in.s_addr & 0xff) == 0)
466 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
467 C(in.s_addr >> 16), C(in.s_addr >> 8));
469 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
470 C(in.s_addr >> 16), C(in.s_addr >> 8),
479 struct sockaddr_in6 sin6; /* use static var for safety */
482 memset(&sin6, 0, sizeof(sin6));
483 memcpy(&sin6, sa, sa->sa_len);
484 sin6.sin6_len = sizeof(struct sockaddr_in6);
485 sin6.sin6_family = AF_INET6;
487 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
488 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
489 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
490 sin6.sin6_scope_id == 0) {
492 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
493 sin6.sin6_addr.s6_addr[2] = 0;
494 sin6.sin6_addr.s6_addr[3] = 0;
498 niflags |= NI_NUMERICHOST;
499 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
500 line, sizeof(line), NULL, 0, niflags) != 0)
501 strncpy(line, "invalid", sizeof(line));
508 (void) snprintf(line, sizeof(line), "atalk %s",
509 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
513 return (link_ntoa((struct sockaddr_dl *)sa));
517 { u_short *s = (u_short *)sa->sa_data;
518 u_short *slim = s + ((sa->sa_len + 1)>>1);
519 char *cp = line + sprintf(line, "af %d:", sa->sa_family);
520 char *cpe = line + sizeof(line);
522 while (s < slim && cp < cpe)
523 if ((n = snprintf(cp, cpe - cp, " %x", *s++)) > 0)
534 set_metric(value, key)
539 u_long noval, *valp = &noval;
542 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
543 caseof(K_MTU, RTV_MTU, rmx_mtu);
544 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
545 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
546 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
547 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
548 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
549 caseof(K_RTT, RTV_RTT, rmx_rtt);
550 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
553 if (lockrest || locking)
554 rt_metrics.rmx_locks |= flag;
565 char *cmd, *dest = "", *gateway = "", *err;
566 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC;
568 struct hostent *hp = 0;
571 errx(EX_NOPERM, "must be root to alter routing table");
575 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
577 if (**(++argv)== '-') {
578 switch (key = keyword(1 + *argv)) {
581 aflen = sizeof(struct sockaddr_dl);
585 aflen = sizeof(struct sockaddr_in);
590 aflen = sizeof(struct sockaddr_in6);
595 aflen = sizeof(struct sockaddr_at);
599 aflen = sizeof(union sockunion);
606 flags &= ~RTF_STATIC;
624 flags |= RTF_BLACKHOLE;
636 flags |= RTF_CLONING;
639 flags |= RTF_XRESOLVE;
647 (void) getaddr(RTA_IFA, *++argv, 0);
652 (void) getaddr(RTA_IFP, *++argv, 0);
657 (void) getaddr(RTA_GENMASK, *++argv, 0);
662 (void) getaddr(RTA_GATEWAY, *++argv, 0);
667 ishost = getaddr(RTA_DST, *++argv, &hp);
673 (void) getaddr(RTA_NETMASK, *++argv, 0);
681 if (prefixlen(*++argv) == -1) {
699 set_metric(*++argv, key);
705 if ((rtm_addrs & RTA_DST) == 0) {
707 ishost = getaddr(RTA_DST, *argv, &hp);
708 } else if ((rtm_addrs & RTA_GATEWAY) == 0) {
710 (void) getaddr(RTA_GATEWAY, *argv, &hp);
712 (void) getaddr(RTA_NETMASK, *argv, 0);
720 if (af == AF_INET6) {
721 rtm_addrs &= ~RTA_NETMASK;
722 memset((void *)&so_mask, 0, sizeof(so_mask));
732 flags |= RTF_GATEWAY;
734 so_dst.sinarp.sin_other = SIN_PROXY;
735 flags |= RTF_ANNOUNCE;
737 for (attempts = 1; ; attempts++) {
739 if ((ret = rtmsg(*cmd, flags)) == 0)
741 if (errno != ENETUNREACH && errno != ESRCH)
743 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) {
745 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0],
746 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr)));
754 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest);
756 (void) printf(": gateway %s", gateway);
757 if (attempts > 1 && ret == 0 && af == AF_INET)
758 (void) printf(" (%s)",
759 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr));
766 err = "not in table";
769 err = "entry in use";
772 err = "not enough memory";
775 /* handle recursion avoidance in rt_setgate() */
776 err = "gateway uses the same route";
779 err = "route already in table";
782 err = strerror(oerrno);
785 (void) printf(": %s\n", err);
792 inet_makenetandmask(net, sin, bits)
794 struct sockaddr_in *sin;
796 u_long addr, mask = 0;
799 rtm_addrs |= RTA_NETMASK;
802 else if (net < 128) {
803 addr = net << IN_CLASSA_NSHIFT;
804 mask = IN_CLASSA_NET;
805 } else if (net < 65536) {
806 addr = net << IN_CLASSB_NSHIFT;
807 mask = IN_CLASSB_NET;
808 } else if (net < 16777216L) {
809 addr = net << IN_CLASSC_NSHIFT;
810 mask = IN_CLASSC_NET;
813 if ((addr & IN_CLASSA_HOST) == 0)
814 mask = IN_CLASSA_NET;
815 else if ((addr & IN_CLASSB_HOST) == 0)
816 mask = IN_CLASSB_NET;
817 else if ((addr & IN_CLASSC_HOST) == 0)
818 mask = IN_CLASSC_NET;
823 mask = 0xffffffff << (32 - bits);
824 sin->sin_addr.s_addr = htonl(addr);
826 sin->sin_addr.s_addr = htonl(mask);
829 cp = (char *)(&sin->sin_addr + 1);
830 while (*--cp == 0 && cp > (char *)sin)
832 sin->sin_len = 1 + cp - (char *)sin;
837 * XXX the function may need more improvement...
840 inet6_makenetandmask(sin6, plen)
841 struct sockaddr_in6 *sin6;
847 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
848 sin6->sin6_scope_id == 0) {
850 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
851 /* aggregatable global unicast - RFC2374 */
852 memset(&in6, 0, sizeof(in6));
853 if (!memcmp(&sin6->sin6_addr.s6_addr[8],
859 if (!plen || strcmp(plen, "128") == 0)
861 rtm_addrs |= RTA_NETMASK;
862 (void)prefixlen(plen);
868 * Interpret an argument as a network address of some kind,
869 * returning 1 if a host address, 0 if a network address.
872 getaddr(which, s, hpp)
875 struct hostent **hpp;
882 int afamily; /* local copy of af so we can change it */
886 aflen = sizeof(struct sockaddr_in);
897 struct ifaddrs *ifap, *ifa;
898 struct sockaddr_dl *sdl = NULL;
900 if (getifaddrs(&ifap))
901 err(1, "getifaddrs");
903 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
904 if (ifa->ifa_addr->sa_family != AF_LINK)
907 if (strcmp(s, ifa->ifa_name))
910 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
912 /* If we found it, then use it */
915 * Copy is safe since we have a
916 * sockaddr_storage member in sockunion{}.
917 * Note that we need to copy before calling
920 memcpy(&su->sdl, sdl, sdl->sdl_len);
941 usage("internal error");
944 su->sa.sa_len = aflen;
945 su->sa.sa_family = afamily; /* cases that don't want it have left already */
946 if (strcmp(s, "default") == 0) {
948 * Default is net 0.0.0.0/0
954 bzero(su, sizeof(*su)); /* for readability */
956 (void) getaddr(RTA_NETMASK, s, 0);
961 bzero(su, sizeof(*su)); /* for readability */
970 struct addrinfo hints, *res;
974 if (which == RTA_DST && (q = strchr(s, '/')) != NULL)
976 memset(&hints, 0, sizeof(hints));
977 hints.ai_family = afamily; /*AF_INET6*/
978 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
979 ecode = getaddrinfo(s, NULL, &hints, &res);
980 if (ecode != 0 || res->ai_family != AF_INET6 ||
981 res->ai_addrlen != sizeof(su->sin6)) {
982 (void) fprintf(stderr, "%s: %s\n", s,
983 gai_strerror(ecode));
986 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6));
988 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) ||
989 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) &&
990 su->sin6.sin6_scope_id) {
991 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] =
992 htons(su->sin6.sin6_scope_id);
993 su->sin6.sin6_scope_id = 0;
999 if (which == RTA_DST)
1000 return (inet6_makenetandmask(&su->sin6, q));
1006 if (!atalk_aton(s, &su->sat.sat_addr))
1007 errx(EX_NOHOST, "bad address: %s", s);
1008 rtm_addrs |= RTA_NETMASK;
1009 return(forcehost || su->sat.sat_addr.s_node != 0);
1012 link_addr(s, &su->sdl);
1017 su->sa.sa_len = sizeof(*su);
1018 sockaddr(s, &su->sa);
1031 if (q && which == RTA_DST) {
1033 if ((val = inet_network(s)) != INADDR_NONE) {
1034 inet_makenetandmask(
1035 val, &su->sin, strtoul(q+1, 0, 0));
1040 if ((which != RTA_DST || forcenet == 0) &&
1041 inet_aton(s, &su->sin.sin_addr)) {
1042 val = su->sin.sin_addr.s_addr;
1043 if (which != RTA_DST || forcehost ||
1044 inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
1051 if (which == RTA_DST && forcehost == 0 &&
1052 ((val = inet_network(s)) != INADDR_NONE ||
1053 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) {
1055 inet_makenetandmask(val, &su->sin, 0);
1058 hp = gethostbyname(s);
1061 su->sin.sin_family = hp->h_addrtype;
1062 memmove((char *)&su->sin.sin_addr, hp->h_addr,
1063 MIN(hp->h_length, sizeof(su->sin.sin_addr)));
1066 errx(EX_NOHOST, "bad address: %s", s);
1073 int len = atoi(s), q, r;
1077 rtm_addrs |= RTA_NETMASK;
1082 p = (char *)&so_mask.sin6.sin6_addr;
1087 p = (char *)&so_mask.sin.sin_addr;
1090 (void) fprintf(stderr, "prefixlen not supported in this af\n");
1095 if (len < 0 || max < len) {
1096 (void) fprintf(stderr, "%s: bad value\n", s);
1102 so_mask.sa.sa_family = af;
1103 so_mask.sa.sa_len = aflen;
1104 memset((void *)p, 0, max / 8);
1106 memset((void *)p, 0xff, q);
1108 *((u_char *)p + q) = (0xff00 >> r) & 0xff;
1120 char *buf, *lim, *next, count = 0;
1121 struct rt_msghdr *rtm;
1126 mib[2] = 0; /* protocol */
1127 mib[3] = 0; /* wildcard address family */
1128 mib[4] = NET_RT_IFLIST;
1129 mib[5] = 0; /* no flags */
1130 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
1131 err(EX_OSERR, "route-sysctl-estimate");
1132 if ((buf = malloc(needed)) == NULL)
1133 errx(EX_OSERR, "malloc failed");
1134 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
1135 if (errno == ENOMEM && count++ < 10) {
1136 warnx("Routing table grew, retrying");
1141 err(EX_OSERR, "actual retrieval of interface table");
1144 for (next = buf; next < lim; next += rtm->rtm_msglen) {
1145 rtm = (struct rt_msghdr *)next;
1146 print_rtmsg(rtm, rtm->rtm_msglen);
1163 n = read(s, msg, 2048);
1165 (void) printf("\ngot message of size %d on %s", n, ctime(&now));
1166 print_rtmsg((struct rt_msghdr *)msg, n);
1171 struct rt_msghdr m_rtm;
1181 char *cp = m_rtmsg.m_space;
1184 #define NEXTADDR(w, u) \
1185 if (rtm_addrs & (w)) {\
1186 l = SA_SIZE(&(u.sa)); memmove(cp, &(u), l); cp += l;\
1187 if (verbose) sodump(&(u),"u");\
1191 memset(&m_rtmsg, 0, sizeof(m_rtmsg));
1194 else if (cmd == 'c')
1196 else if (cmd == 'g') {
1198 if (so_ifp.sa.sa_family == 0) {
1199 so_ifp.sa.sa_family = AF_LINK;
1200 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
1201 rtm_addrs |= RTA_IFP;
1205 #define rtm m_rtmsg.m_rtm
1207 rtm.rtm_flags = flags;
1208 rtm.rtm_version = RTM_VERSION;
1209 rtm.rtm_seq = ++seq;
1210 rtm.rtm_addrs = rtm_addrs;
1211 rtm.rtm_rmx = rt_metrics;
1212 rtm.rtm_inits = rtm_inits;
1214 if (rtm_addrs & RTA_NETMASK)
1216 NEXTADDR(RTA_DST, so_dst);
1217 NEXTADDR(RTA_GATEWAY, so_gate);
1218 NEXTADDR(RTA_NETMASK, so_mask);
1219 NEXTADDR(RTA_GENMASK, so_genmask);
1220 NEXTADDR(RTA_IFP, so_ifp);
1221 NEXTADDR(RTA_IFA, so_ifa);
1222 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
1224 print_rtmsg(&rtm, l);
1227 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
1229 err(1, "writing to routing socket");
1230 warn("writing to routing socket");
1233 if (cmd == RTM_GET) {
1235 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
1236 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
1238 warn("read from routing socket");
1240 print_getmsg(&rtm, l);
1249 int olen = so_mask.sa.sa_len;
1250 char *cp1 = olen + (char *)&so_mask, *cp2;
1252 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; )
1254 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask;
1257 if ((rtm_addrs & RTA_DST) == 0)
1259 switch (so_dst.sa.sa_family) {
1268 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst;
1269 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst;
1272 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask;
1273 while (cp1 > so_dst.sa.sa_data)
1277 char *msgtypes[] = {
1279 "RTM_ADD: Add Route",
1280 "RTM_DELETE: Delete Route",
1281 "RTM_CHANGE: Change Metrics or flags",
1282 "RTM_GET: Report Metrics",
1283 "RTM_LOSING: Kernel Suspects Partitioning",
1284 "RTM_REDIRECT: Told to use different route",
1285 "RTM_MISS: Lookup failed on this address",
1286 "RTM_LOCK: fix specified metrics",
1287 "RTM_OLDADD: caused by SIOCADDRT",
1288 "RTM_OLDDEL: caused by SIOCDELRT",
1289 "RTM_RESOLVE: Route created by cloning",
1290 "RTM_NEWADDR: address being added to iface",
1291 "RTM_DELADDR: address being removed from iface",
1292 "RTM_IFINFO: iface status change",
1293 "RTM_NEWMADDR: new multicast group membership on iface",
1294 "RTM_DELMADDR: multicast group membership removed from iface",
1295 "RTM_IFANNOUNCE: interface arrival/departure",
1299 char metricnames[] =
1300 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount"
1303 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT"
1304 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016"
1305 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE"
1306 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST";
1308 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1309 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1310 "\017LINK2\020MULTICAST";
1312 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
1315 print_rtmsg(rtm, msglen)
1316 struct rt_msghdr *rtm;
1319 struct if_msghdr *ifm;
1320 struct ifa_msghdr *ifam;
1322 struct ifma_msghdr *ifmam;
1324 struct if_announcemsghdr *ifan;
1329 if (rtm->rtm_version != RTM_VERSION) {
1330 (void) printf("routing message version %d not understood\n",
1334 if (msgtypes[rtm->rtm_type] != NULL)
1335 (void)printf("%s: ", msgtypes[rtm->rtm_type]);
1337 (void)printf("#%d: ", rtm->rtm_type);
1338 (void)printf("len %d, ", rtm->rtm_msglen);
1339 switch (rtm->rtm_type) {
1341 ifm = (struct if_msghdr *)rtm;
1342 (void) printf("if# %d, ", ifm->ifm_index);
1343 switch (ifm->ifm_data.ifi_link_state) {
1344 case LINK_STATE_DOWN:
1354 (void) printf("link: %s, flags:", state);
1355 bprintf(stdout, ifm->ifm_flags, ifnetflags);
1356 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs);
1360 ifam = (struct ifa_msghdr *)rtm;
1361 (void) printf("metric %d, flags:", ifam->ifam_metric);
1362 bprintf(stdout, ifam->ifam_flags, routeflags);
1363 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs);
1368 ifmam = (struct ifma_msghdr *)rtm;
1369 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs);
1372 case RTM_IFANNOUNCE:
1373 ifan = (struct if_announcemsghdr *)rtm;
1374 (void) printf("if# %d, what: ", ifan->ifan_index);
1375 switch (ifan->ifan_what) {
1379 case IFAN_DEPARTURE:
1380 printf("departure");
1383 printf("#%d", ifan->ifan_what);
1390 (void) printf("pid: %ld, seq %d, errno %d, flags:",
1391 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1392 bprintf(stdout, rtm->rtm_flags, routeflags);
1398 print_getmsg(rtm, msglen)
1399 struct rt_msghdr *rtm;
1402 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
1403 struct sockaddr_dl *ifp = NULL;
1404 struct sockaddr *sa;
1408 (void) printf(" route to: %s\n", routename(&so_dst));
1409 if (rtm->rtm_version != RTM_VERSION) {
1410 warnx("routing message version %d not understood",
1414 if (rtm->rtm_msglen > msglen) {
1415 warnx("message length mismatch, in packet %d, returned %d",
1416 rtm->rtm_msglen, msglen);
1418 if (rtm->rtm_errno) {
1419 errno = rtm->rtm_errno;
1420 warn("message indicates error %d", errno);
1423 cp = ((char *)(rtm + 1));
1425 for (i = 1; i; i <<= 1)
1426 if (i & rtm->rtm_addrs) {
1427 sa = (struct sockaddr *)cp;
1439 if (sa->sa_family == AF_LINK &&
1440 ((struct sockaddr_dl *)sa)->sdl_nlen)
1441 ifp = (struct sockaddr_dl *)sa;
1447 mask->sa_family = dst->sa_family; /* XXX */
1449 (void)printf("destination: %s\n", routename(dst));
1451 int savenflag = nflag;
1454 (void)printf(" mask: %s\n", routename(mask));
1457 if (gate && rtm->rtm_flags & RTF_GATEWAY)
1458 (void)printf(" gateway: %s\n", routename(gate));
1460 (void)printf(" interface: %.*s\n",
1461 ifp->sdl_nlen, ifp->sdl_data);
1462 (void)printf(" flags: ");
1463 bprintf(stdout, rtm->rtm_flags, routeflags);
1465 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1466 #define msec(u) (((u) + 500) / 1000) /* usec to msec */
1468 (void) printf("\n%s\n", "\
1469 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire");
1470 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1471 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1472 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1473 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1474 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR));
1475 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT));
1476 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
1477 if (rtm->rtm_rmx.rmx_expire)
1478 rtm->rtm_rmx.rmx_expire -= time(0);
1479 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
1482 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
1485 else if (rtm->rtm_addrs &~ RTA_IGN) {
1486 (void) printf("sockaddrs: ");
1487 bprintf(stdout, rtm->rtm_addrs, addrnames);
1495 struct rt_msghdr *rtm;
1497 (void) printf("\nlocks: ");
1498 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
1499 (void) printf(" inits: ");
1500 bprintf(stdout, rtm->rtm_inits, metricnames);
1501 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs);
1505 pmsg_addrs(cp, addrs)
1509 struct sockaddr *sa;
1513 (void) putchar('\n');
1516 (void) printf("\nsockaddrs: ");
1517 bprintf(stdout, addrs, addrnames);
1518 (void) putchar('\n');
1519 for (i = 1; i; i <<= 1)
1521 sa = (struct sockaddr *)cp;
1522 (void) printf(" %s", routename(sa));
1525 (void) putchar('\n');
1526 (void) fflush(stdout);
1540 while ((i = *s++) != 0) {
1541 if (b & (1 << (i-1))) {
1548 for (; (i = *s) > 32; s++)
1555 (void) putc('>', fp);
1562 struct keytab *kt = keywords;
1564 while (kt->kt_cp && strcmp(kt->kt_cp, cp))
1574 switch (su->sa.sa_family) {
1576 (void) printf("%s: link %s; ",
1577 which, link_ntoa(&su->sdl));
1580 (void) printf("%s: inet %s; ",
1581 which, inet_ntoa(su->sin.sin_addr));
1584 (void) printf("%s: atalk %s; ",
1585 which, atalk_ntoa(su->sat.sat_addr));
1588 (void) fflush(stdout);
1603 struct sockaddr *sa;
1605 char *cp = (char *)sa;
1606 int size = sa->sa_len;
1607 char *cplim = cp + size;
1608 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
1610 memset(cp, 0, size);
1613 if ((*addr >= '0') && (*addr <= '9')) {
1615 } else if ((*addr >= 'a') && (*addr <= 'f')) {
1616 new = *addr - 'a' + 10;
1617 } else if ((*addr >= 'A') && (*addr <= 'F')) {
1618 new = *addr - 'A' + 10;
1619 } else if (*addr == 0)
1624 switch (state /* | INPUT */) {
1625 case GOTTWO | DIGIT:
1626 *cp++ = byte; /*FALLTHROUGH*/
1627 case VIRGIN | DIGIT:
1628 state = GOTONE; byte = new; continue;
1629 case GOTONE | DIGIT:
1630 state = GOTTWO; byte = new + (byte << 4); continue;
1631 default: /* | DELIM */
1632 state = VIRGIN; *cp++ = byte; byte = 0; continue;
1635 *cp++ = byte; /* FALLTHROUGH */
1640 } while (cp < cplim);
1641 sa->sa_len = cp - (char *)sa;
1645 atalk_aton(const char *text, struct at_addr *addr)
1649 if (sscanf(text, "%u.%u", &net, &node) != 2
1650 || net > 0xffff || node > 0xff)
1652 addr->s_net = htons(net);
1653 addr->s_node = node;
1658 atalk_ntoa(struct at_addr at)
1660 static char buf[20];
1662 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);