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 * 3. 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
29 * @(#) Copyright (c) 1983, 1989, 1991, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)route.c 8.6 (Berkeley) 4/28/95
31 * $FreeBSD: src/sbin/route/route.c,v 1.40.2.11 2003/02/27 23:10:10 ru Exp $
34 #include <sys/param.h>
35 #include <sys/socket.h>
36 #include <sys/ioctl.h>
37 #include <sys/sysctl.h>
38 #include <sys/types.h>
41 #include <net/route.h>
42 #include <net/if_dl.h>
43 #include <netinet/in.h>
44 #include <netinet/if_ether.h>
45 #include <arpa/inet.h>
48 #include <netproto/802_11/ieee80211_dragonfly.h>
49 #include <netproto/mpls/mpls.h>
68 struct sockaddr_in sin;
70 struct sockaddr_in6 sin6;
72 struct sockaddr_mpls smpls;
73 struct sockaddr_dl sdl;
74 struct sockaddr_inarp sinarp;
75 struct sockaddr_storage ss; /* added to avoid memory overrun */
76 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp, so_mpls1,
79 typedef union sockunion *sup;
84 static struct keytab {
87 } const keywords[] = {
92 static struct sockaddr_in so_gate_tried;
93 static struct rt_metrics rt_metrics;
94 static int pid, rtm_addrs;
96 static int forcehost, forcenet, af, qflag, tflag;
97 static int iflag, verbose, aflen = sizeof(struct sockaddr_in);
98 static int locking, lockrest, debugonly;
99 static int mplsop, popcount, pushcount, swapcount;
100 static u_long rtm_inits;
103 static void flushroutes(int, char **);
104 static void set_metric(char *, int);
105 static void newroute(int, char **) __dead2;
106 static void inet_makenetandmask(u_long, struct sockaddr_in *, u_long);
107 static void interfaces(void);
108 static void monitor(void) __dead2;
109 static void sockaddr(const char *, struct sockaddr *);
110 static void sodump(sup, const char *);
111 static void bprintf(FILE *, int, u_char *);
112 static void print_getmsg(struct rt_msghdr *, int);
113 static void print_rtmsg(struct rt_msghdr *, int);
114 static void pmsg_common(struct rt_msghdr *);
115 static void pmsg_addrs(char *, int);
116 static void mask_addr(void);
117 static int getaddr(int, const char *, struct hostent **);
118 static int rtmsg(int, int);
119 static int prefixlen(const char *);
121 static int inet6_makenetandmask(struct sockaddr_in6 *, const char *);
124 #define PRIETHER "02x:%02x:%02x:%02x:%02x:%02x"
125 #define PRIETHER_ARGS(__enaddr) (__enaddr)[0], (__enaddr)[1], (__enaddr)[2], \
126 (__enaddr)[3], (__enaddr)[4], (__enaddr)[5]
129 usage(const char *cp)
132 warnx("bad keyword: %s", cp);
133 fprintf(stderr, "usage: route [-dnqtvw] [-c cpu] command [[modifiers] args]\n");
139 main(int argc, char **argv)
146 while ((ch = getopt(argc, argv, "c:wnqdtv")) != -1)
149 cpuflag = strtol(optarg, NULL, 0);
179 s = open(_PATH_DEVNULL, O_WRONLY, 0);
182 s = socket(PF_ROUTE, SOCK_RAW, 0);
185 if (setsockopt(s, SOL_SOCKET, SO_RERROR, &on, sizeof(on)) == -1)
190 err(EX_OSERR, "socket");
192 switch (keyword(*argv)) {
200 newroute(argc, argv);
212 flushroutes(argc, argv);
221 * Purge all entries in the routing tables not
222 * associated with network interfaces.
225 flushroutes(int argc, char **argv)
228 int mib[7], rlen, seqno;
230 char *buf, *next, *lim;
231 struct rt_msghdr *rtm;
234 errx(EX_NOPERM, "must be root to alter routing table");
236 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
239 if (argc == 2 && **argv == '-')
240 switch (keyword(*argv + 1)) {
262 mib[2] = 0; /* protocol */
263 mib[3] = 0; /* wildcard address family */
264 mib[4] = NET_RT_DUMP;
265 mib[5] = 0; /* no flags */
272 if (sysctl(mib, miblen, NULL, &needed, NULL, 0) < 0)
273 err(EX_OSERR, "route-sysctl-estimate");
274 if ((buf = malloc(needed)) == NULL)
275 errx(EX_OSERR, "malloc failed");
276 if (sysctl(mib, miblen, buf, &needed, NULL, 0) < 0)
277 err(EX_OSERR, "route-sysctl-get");
280 printf("Examining routing table from sysctl\n");
282 for (next = buf; next < lim; next += rtm->rtm_msglen) {
283 rtm = (struct rt_msghdr *)next;
285 print_rtmsg(rtm, rtm->rtm_msglen);
286 if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
289 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
291 if (sa->sa_family != af)
296 rtm->rtm_type = RTM_DELETE;
297 rtm->rtm_seq = seqno;
298 rlen = write(s, next, rtm->rtm_msglen);
299 if (rlen < (int)rtm->rtm_msglen) {
300 warn("write to routing socket");
301 printf("got only %d for rlen\n", rlen);
308 print_rtmsg(rtm, rlen);
310 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
312 printf("%-20s ", rtm->rtm_flags & RTF_HOST ?
313 routename(sa) : netname(sa));
315 printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
316 routename(sa) : netname(sa));
318 sa = (struct sockaddr *)(RT_ROUNDUP(sa->sa_len) +
321 printf("%-20s ", routename(sa));
323 printf("%-20.20s ", routename(sa));
331 routename(struct sockaddr *sa)
334 static char line[MAXHOSTNAMELEN + 1];
336 static char domain[MAXHOSTNAMELEN + 1];
337 static int first = 1;
341 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
342 (cp = strchr(domain, '.'))) {
343 domain[MAXHOSTNAMELEN] = '\0';
344 strcpy(domain, cp + 1);
350 strcpy(line, "default");
351 else switch (sa->sa_family) {
355 in = ((struct sockaddr_in *)sa)->sin_addr;
358 if (in.s_addr == INADDR_ANY || sa->sa_len < 4)
360 if (cp == NULL && !nflag) {
361 hp = gethostbyaddr(&in, sizeof(struct in_addr),
365 cptr = strchr(hp->h_name, '.');
366 if (cptr != NULL && !wflag &&
367 strcmp(cptr + 1, domain) == 0)
373 strncpy(line, cp, sizeof(line) - 1);
374 line[sizeof(line) - 1] = '\0';
376 sprintf(line, "%s", inet_ntoa(in));
383 struct sockaddr_in6 sin6; /* use static var for safety */
385 #ifdef NI_WITHSCOPEID
386 niflags = NI_WITHSCOPEID;
389 memset(&sin6, 0, sizeof(sin6));
390 memcpy(&sin6, sa, sa->sa_len);
391 sin6.sin6_len = sizeof(struct sockaddr_in6);
392 sin6.sin6_family = AF_INET6;
394 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
395 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
396 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
397 sin6.sin6_scope_id == 0) {
399 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
400 sin6.sin6_addr.s6_addr[2] = 0;
401 sin6.sin6_addr.s6_addr[3] = 0;
405 niflags |= NI_NUMERICHOST;
406 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
407 line, sizeof(line), NULL, 0, niflags) != 0)
408 strncpy(line, "invalid", sizeof(line));
415 return(link_ntoa((struct sockaddr_dl *)sa));
420 * Unknown address family; just render the raw
421 * data in sa->sa_data as hex values.
423 uint8_t *sp = (uint8_t *)sa->sa_data;
424 uint8_t *splim = (uint8_t *)sa + sa->sa_len;
425 char *cps = line + sprintf(line, "(%d)", sa->sa_family);
426 char *cpe = line + sizeof(line);
428 while (sp < splim && cps < cpe)
429 cps += snprintf(cps, cpe - cps, " %02x", *sp++);
437 * Return the name of the network whose address is given.
438 * The address is assumed to be that of a net or subnet, not a host.
441 netname(struct sockaddr *sa)
443 const char *cp = NULL;
444 static char line[MAXHOSTNAMELEN + 1];
445 struct netent *np = NULL;
450 switch (sa->sa_family) {
454 in = ((struct sockaddr_in *)sa)->sin_addr;
456 i = in.s_addr = ntohl(in.s_addr);
461 mask = IN_CLASSA_NET;
463 } else if (IN_CLASSB(i)) {
464 mask = IN_CLASSB_NET;
467 mask = IN_CLASSC_NET;
471 * If there are more bits than the standard mask
472 * would suggest, subnets must be in use.
473 * Guess at the subnet mask, assuming reasonable
474 * width subnet fields.
476 while (in.s_addr &~ mask)
477 mask |= mask >> subnetshift;
478 net = in.s_addr & mask;
479 while ((mask & 1) == 0)
480 mask >>= 1, net >>= 1;
481 np = getnetbyaddr(net, AF_INET);
485 #define C(x) (unsigned)((x) & 0xff)
487 strncpy(line, cp, sizeof(line));
488 else if ((in.s_addr & 0xffffff) == 0)
489 sprintf(line, "%u", C(in.s_addr >> 24));
490 else if ((in.s_addr & 0xffff) == 0)
491 sprintf(line, "%u.%u", C(in.s_addr >> 24),
493 else if ((in.s_addr & 0xff) == 0)
494 sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
495 C(in.s_addr >> 16), C(in.s_addr >> 8));
497 sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
498 C(in.s_addr >> 16), C(in.s_addr >> 8),
507 struct sockaddr_in6 sin6; /* use static var for safety */
509 #ifdef NI_WITHSCOPEID
510 niflags = NI_WITHSCOPEID;
513 memset(&sin6, 0, sizeof(sin6));
514 memcpy(&sin6, sa, sa->sa_len);
515 sin6.sin6_len = sizeof(struct sockaddr_in6);
516 sin6.sin6_family = AF_INET6;
518 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
519 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
520 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
521 sin6.sin6_scope_id == 0) {
523 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
524 sin6.sin6_addr.s6_addr[2] = 0;
525 sin6.sin6_addr.s6_addr[3] = 0;
529 niflags |= NI_NUMERICHOST;
530 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
531 line, sizeof(line), NULL, 0, niflags) != 0)
532 strncpy(line, "invalid", sizeof(line));
539 return(link_ntoa((struct sockaddr_dl *)sa));
545 * Unknown address family; just render the raw
546 * data in sa->sa_data as hex values.
548 uint8_t *sp = (uint8_t *)sa->sa_data;
549 uint8_t *splim = (uint8_t *)sa + sa->sa_len;
550 char *cps = line + sprintf(line, "af %d:", sa->sa_family);
551 char *cpe = line + sizeof(line);
553 while (sp < splim && cps < cpe)
554 cps += snprintf(cps, cpe - cps, " %02x", *sp++);
562 set_metric(char *value, int key)
565 u_long noval, *valp = &noval;
568 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
569 caseof(K_MTU, RTV_MTU, rmx_mtu);
570 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
571 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
572 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
573 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
574 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
575 caseof(K_RTT, RTV_RTT, rmx_rtt);
576 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
577 caseof(K_MSL, RTV_MSL, rmx_msl);
578 caseof(K_IWMAX, RTV_IWMAXSEGS, rmx_iwmaxsegs);
579 caseof(K_IW, RTV_IWCAPSEGS, rmx_iwcapsegs);
582 if (lockrest || locking)
583 rt_metrics.rmx_locks |= flag;
590 newroute(int argc, char **argv)
593 const char *err_str, *dest = "", *gateway = "";
594 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC;
596 struct hostent *hp = NULL;
599 errx(EX_NOPERM, "must be root to alter routing table");
603 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
605 if (**(++argv)== '-') {
606 switch (key = keyword(1 + *argv)) {
609 aflen = sizeof(struct sockaddr_dl);
613 aflen = sizeof(struct sockaddr_in);
618 aflen = sizeof(struct sockaddr_in6);
623 aflen = sizeof(union sockunion);
630 flags &= ~RTF_STATIC;
648 flags |= RTF_BLACKHOLE;
660 flags |= RTF_CLONING;
663 flags |= RTF_XRESOLVE;
671 getaddr(RTA_IFA, *++argv, 0);
676 getaddr(RTA_IFP, *++argv, 0);
681 getaddr(RTA_GENMASK, *++argv, 0);
686 getaddr(RTA_GATEWAY, *++argv, 0);
691 ishost = getaddr(RTA_DST, *++argv, &hp);
697 getaddr(RTA_NETMASK, *++argv, 0);
705 if (prefixlen(*++argv) == -1) {
715 aflen = sizeof(struct sockaddr_mpls);
718 flags |= RTF_MPLSOPS;
720 mplsop = MPLSLOP_POP;
723 getaddr(RTA_MPLS1, "", 0);
726 getaddr(RTA_MPLS2, "", 0);
729 getaddr(RTA_MPLS3, "", 0);
736 warnx("Push or swap after pop. Ignoring.");
740 mplsop = MPLSLOP_PUSH;
744 warnx("Swap after push. Ignoring.");
748 warnx("Too many swaps. Ignoring.");
751 mplsop = MPLSLOP_SWAP;
754 flags |= RTF_MPLSOPS;
756 aflen = sizeof(struct sockaddr_mpls);
759 switch(pushcount + swapcount){
761 getaddr(RTA_MPLS1, *++argv, 0);
764 getaddr(RTA_MPLS2, *++argv, 0);
767 getaddr(RTA_MPLS3, *++argv, 0);
784 set_metric(*++argv, key);
790 if ((rtm_addrs & RTA_DST) == 0) {
792 ishost = getaddr(RTA_DST, *argv, &hp);
793 } else if ((rtm_addrs & RTA_GATEWAY) == 0) {
795 getaddr(RTA_GATEWAY, *argv, &hp);
797 getaddr(RTA_NETMASK, *argv, 0);
805 if (af == AF_INET6) {
806 rtm_addrs &= ~RTA_NETMASK;
807 memset((void *)&so_mask, 0, sizeof(so_mask));
817 flags |= RTF_GATEWAY;
819 so_dst.sinarp.sin_other = SIN_PROXY;
820 flags |= RTF_ANNOUNCE;
822 for (attempts = 1; ; attempts++) {
824 if ((ret = rtmsg(*cmd, flags)) == 0)
826 if (errno != ENETUNREACH && errno != ESRCH)
828 if (af == AF_INET && *gateway != '\0' &&
829 hp != NULL && hp->h_addr_list[1] != NULL) {
830 so_gate_tried = so_gate.sin;
832 memmove(&so_gate.sin.sin_addr,
834 MIN((size_t)hp->h_length,
835 sizeof(so_gate.sin.sin_addr)));
843 printf("%s %s %s", cmd, ishost? "host" : "net", dest);
844 if (*gateway != '\0') {
845 printf(": gateway %s", gateway);
846 if (attempts > 1 && ret == 0 && af == AF_INET) {
848 inet_ntoa(so_gate_tried.sin_addr));
856 err_str = "not in table";
859 err_str = "entry in use";
862 err_str = "routing table overflow";
864 case EDQUOT: /* handle recursion avoidance in
866 err_str = "gateway uses the same route";
869 err_str = strerror(oerrno);
872 printf(": %s\n", err_str);
879 inet_makenetandmask(u_long net, struct sockaddr_in *in, u_long bits)
881 u_long addr, mask = 0;
884 rtm_addrs |= RTA_NETMASK;
886 * XXX: This approach unable to handle 0.0.0.1/32 correctly
887 * as inet_network() converts 0.0.0.1 and 1 equally.
890 addr = net << IN_CLASSA_NSHIFT;
891 else if (net <= 0xffff)
892 addr = net << IN_CLASSB_NSHIFT;
893 else if (net <= 0xffffff)
894 addr = net << IN_CLASSC_NSHIFT;
899 mask = 0xffffffff << (32 - bits);
902 else if (IN_CLASSA(addr))
903 mask = IN_CLASSA_NET;
904 else if (IN_CLASSB(addr))
905 mask = IN_CLASSB_NET;
906 else if (IN_CLASSC(addr))
907 mask = IN_CLASSC_NET;
908 else if (IN_MULTICAST(addr))
909 mask = IN_CLASSD_NET;
913 in->sin_addr.s_addr = htonl(addr);
915 in->sin_addr.s_addr = htonl(mask);
918 cp = (char *)(&in->sin_addr + 1);
919 while (*--cp == 0 && cp > (char *)in)
921 in->sin_len = 1 + cp - (char *)in;
926 * XXX the function may need more improvement...
929 inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen)
934 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
935 sin6->sin6_scope_id == 0) {
937 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
938 /* aggregatable global unicast - RFC2374 */
939 memset(&in6, 0, sizeof(in6));
940 if (memcmp(&sin6->sin6_addr.s6_addr[8],
941 &in6.s6_addr[8], 8) == 0)
946 if (plen == NULL || strcmp(plen, "128") == 0)
948 rtm_addrs |= RTA_NETMASK;
955 * Interpret an argument as a network address of some kind,
956 * returning 1 if a host address, 0 if a network address.
959 getaddr(int which, const char *str, struct hostent **hpp)
966 int afamily; /* local copy of af so we can change it */
970 aflen = sizeof(struct sockaddr_in);
981 struct ifaddrs *ifap, *ifa;
982 struct sockaddr_dl *sdl = NULL;
984 if (getifaddrs(&ifap))
985 err(1, "getifaddrs");
987 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
988 if (ifa->ifa_addr->sa_family != AF_LINK)
991 if (strcmp(str, ifa->ifa_name) != 0)
994 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
996 /* If we found it, then use it */
999 * Copy is safe since we have a
1000 * sockaddr_storage member in sockunion{}.
1001 * Note that we need to copy before calling
1004 * Interface routes are routed only by their
1005 * sdl_index or interface name (we provide
1006 * both here), not by the ARP address of the
1007 * local interface (alen, slen = 0).
1009 memcpy(&su->sdl, sdl, sdl->sdl_len);
1010 su->sdl.sdl_alen = 0;
1011 su->sdl.sdl_slen = 0;
1041 usage("internal error");
1044 su->sa.sa_len = aflen;
1045 su->sa.sa_family = afamily; /* cases that don't want it have left
1047 if (strcmp(str, "default") == 0) {
1049 * Default is net 0.0.0.0/0
1054 /* bzero(su, sizeof(*su)); *//* for readability */
1055 getaddr(RTA_NETMASK, str, 0);
1059 /* bzero(su, sizeof(*su)); *//* for readability */
1068 struct addrinfo hints, *res;
1071 if (which == RTA_DST && (q = strchr(str, '/')) != NULL)
1073 memset(&hints, 0, sizeof(hints));
1074 hints.ai_family = afamily; /*AF_INET6*/
1075 hints.ai_flags = AI_NUMERICHOST;
1076 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1077 if (getaddrinfo(str, "0", &hints, &res) != 0 ||
1078 res->ai_family != AF_INET6 ||
1079 res->ai_addrlen != sizeof(su->sin6)) {
1080 fprintf(stderr, "%s: bad value\n", str);
1083 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6));
1085 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) ||
1086 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) &&
1087 su->sin6.sin6_scope_id) {
1088 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] =
1089 htons(su->sin6.sin6_scope_id);
1090 su->sin6.sin6_scope_id = 0;
1096 if (which == RTA_DST)
1097 return(inet6_makenetandmask(&su->sin6, q));
1103 link_addr(str, &su->sdl);
1107 su->sa.sa_len = sizeof(*su);
1108 sockaddr(str, &su->sa);
1115 bzero(su, sizeof(*su));
1116 su->sa.sa_len = sizeof(*su);
1117 su->sa.sa_family = AF_MPLS;
1118 su->smpls.smpls_op = mplsop;
1119 if (mplsop != MPLSLOP_POP && mplsop != MPLSLOP_POPALL &&
1121 if (sscanf(str, "%u", &label) != 1)
1122 errx(EX_NOHOST, "bad address: %s", str);
1123 su->smpls.smpls_label = htonl(label);
1137 q = strchr(str,'/');
1138 if (q != NULL && which == RTA_DST) {
1140 if ((val = inet_network(str)) != INADDR_NONE) {
1141 inet_makenetandmask(
1142 val, &su->sin, strtoul(q+1, 0, 0));
1147 if ((which != RTA_DST || forcenet == 0) &&
1148 inet_aton(str, &su->sin.sin_addr)) {
1149 val = su->sin.sin_addr.s_addr;
1150 if (which != RTA_DST ||
1151 inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
1158 if (which == RTA_DST && forcehost == 0 &&
1159 ((val = inet_network(str)) != INADDR_NONE ||
1160 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) {
1162 inet_makenetandmask(val, &su->sin, 0);
1165 hp = gethostbyname(str);
1168 su->sin.sin_family = hp->h_addrtype;
1169 memmove((char *)&su->sin.sin_addr, hp->h_addr,
1170 MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr)));
1173 errx(EX_NOHOST, "bad address: %s", str);
1177 prefixlen(const char *len_str)
1179 int len = atoi(len_str), q, r;
1183 rtm_addrs |= RTA_NETMASK;
1188 p = (char *)&so_mask.sin6.sin6_addr;
1193 p = (char *)&so_mask.sin.sin_addr;
1196 fprintf(stderr, "prefixlen not supported in this af\n");
1201 if (len < 0 || max < len) {
1202 fprintf(stderr, "%s: bad value\n", len_str);
1208 so_mask.sa.sa_family = af;
1209 so_mask.sa.sa_len = aflen;
1210 memset((void *)p, 0, max / 8);
1212 memset((void *)p, 0xff, q);
1214 *((u_char *)p + q) = (0xff00 >> r) & 0xff;
1226 char *buf, *lim, *next;
1227 struct rt_msghdr *rtm;
1231 mib[2] = 0; /* protocol */
1232 mib[3] = 0; /* wildcard address family */
1233 mib[4] = NET_RT_IFLIST;
1234 mib[5] = 0; /* no flags */
1235 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
1236 err(EX_OSERR, "route-sysctl-estimate");
1237 if ((buf = malloc(needed)) == NULL)
1238 errx(EX_OSERR, "malloc failed");
1239 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
1240 err(EX_OSERR, "actual retrieval of interface table");
1242 for (next = buf; next < lim; next += rtm->rtm_msglen) {
1243 rtm = (struct rt_msghdr *)next;
1244 print_rtmsg(rtm, rtm->rtm_msglen);
1262 n = read(s, msg, sizeof(msg));
1266 printf("\nsocket error %d on %s %s\n",
1267 error, ctime(&now), strerror(errno));
1270 printf("\ngot message of size %d on %s", n, ctime(&now));
1271 print_rtmsg((struct rt_msghdr *)msg, n);
1276 struct rt_msghdr m_rtm;
1281 rtmsg(int cmd, int flags)
1285 char *cp = m_rtmsg.m_space;
1288 #define NEXTADDR(w, u) \
1289 if (rtm_addrs & (w)) {\
1290 l = RT_ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\
1291 if (verbose) sodump(&(u),"u");\
1295 memset(&m_rtmsg, 0, sizeof(m_rtmsg));
1298 else if (cmd == 'c')
1300 else if (cmd == 'g') {
1302 if (so_ifp.sa.sa_family == 0) {
1303 so_ifp.sa.sa_family = AF_LINK;
1304 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
1305 rtm_addrs |= RTA_IFP;
1309 #define rtm m_rtmsg.m_rtm
1311 rtm.rtm_flags = flags;
1312 rtm.rtm_version = RTM_VERSION;
1313 rtm.rtm_seq = ++seq;
1314 rtm.rtm_addrs = rtm_addrs;
1315 rtm.rtm_rmx = rt_metrics;
1316 rtm.rtm_inits = rtm_inits;
1318 if (rtm_addrs & RTA_NETMASK)
1320 NEXTADDR(RTA_DST, so_dst);
1321 NEXTADDR(RTA_GATEWAY, so_gate);
1322 NEXTADDR(RTA_NETMASK, so_mask);
1323 NEXTADDR(RTA_GENMASK, so_genmask);
1324 NEXTADDR(RTA_IFP, so_ifp);
1325 NEXTADDR(RTA_IFA, so_ifa);
1326 NEXTADDR(RTA_MPLS1, so_mpls1);
1327 NEXTADDR(RTA_MPLS2, so_mpls2);
1328 NEXTADDR(RTA_MPLS3, so_mpls3);
1329 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
1331 print_rtmsg(&rtm, l);
1334 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
1335 warn("writing to routing socket");
1338 if (cmd == RTM_GET) {
1340 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
1341 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
1343 warn("read from routing socket");
1345 print_getmsg(&rtm, l);
1354 int olen = so_mask.sa.sa_len;
1355 char *cp1 = olen + (char *)&so_mask, *cp2;
1357 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; )
1359 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask;
1362 if ((rtm_addrs & RTA_DST) == 0)
1364 switch (so_dst.sa.sa_family) {
1372 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst;
1373 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst;
1376 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask;
1377 while (cp1 > so_dst.sa.sa_data)
1381 const char *msgtypes[] = {
1383 "RTM_ADD: Add Route",
1384 "RTM_DELETE: Delete Route",
1385 "RTM_CHANGE: Change Metrics or flags",
1386 "RTM_GET: Report Metrics",
1387 "RTM_LOSING: Kernel Suspects Partitioning",
1388 "RTM_REDIRECT: Told to use different route",
1389 "RTM_MISS: Lookup failed on this address",
1390 "RTM_LOCK: fix specified metrics",
1393 "RTM_RESOLVE: Route created by cloning",
1394 "RTM_NEWADDR: address being added to iface",
1395 "RTM_DELADDR: address being removed from iface",
1396 "RTM_IFINFO: iface status change",
1397 "RTM_NEWMADDR: new multicast group membership on iface",
1398 "RTM_DELMADDR: multicast group membership removed from iface",
1399 "RTM_IFANNOUNCE: interface arrival/departure",
1400 "RTM_IEEE80211: IEEE80211 wireless event",
1404 char metricnames[] =
1405 "\013iw\012iwmax\011msl\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire"
1408 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT"
1409 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016"
1410 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE"
1411 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST";
1413 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1414 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1415 "\017LINK2\020MULTICAST";
1417 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"
1418 "\011MPLS1\012MPLS2\013MPLS3";
1421 linkstate(struct if_msghdr *ifm)
1423 static char buf[64];
1425 switch (ifm->ifm_data.ifi_link_state) {
1426 case LINK_STATE_UNKNOWN:
1427 return "carrier: unknown";
1428 case LINK_STATE_DOWN:
1429 return "carrier: no carrier";
1431 return "carrier: active";
1433 (void)snprintf(buf, sizeof(buf), "carrier: 0x%lx",
1434 ifm->ifm_data.ifi_link_state);
1440 print_rtmsg(struct rt_msghdr *rtm, int msglen __unused)
1442 struct if_msghdr *ifm;
1443 struct ifa_msghdr *ifam;
1445 struct ifma_msghdr *ifmam;
1447 struct if_announcemsghdr *ifan;
1449 struct ieee80211_join_event join;
1450 struct ieee80211_leave_event leave;
1451 struct ieee80211_replay_event replay;
1452 struct ieee80211_michael_event michael;
1458 if (rtm->rtm_version != RTM_VERSION) {
1459 printf("routing message version %d not understood\n",
1463 if (msgtypes[rtm->rtm_type] != NULL)
1464 printf("%s: ", msgtypes[rtm->rtm_type]);
1466 printf("#%d: ", rtm->rtm_type);
1467 printf("len %d, ", rtm->rtm_msglen);
1468 switch (rtm->rtm_type) {
1470 ifm = (struct if_msghdr *)rtm;
1471 printf("if# %d, %s, flags:", ifm->ifm_index, linkstate(ifm));
1472 bprintf(stdout, ifm->ifm_flags, ifnetflags);
1473 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs);
1477 ifam = (struct ifa_msghdr *)rtm;
1478 printf("metric %d, flags:", ifam->ifam_metric);
1479 bprintf(stdout, ifam->ifam_flags, routeflags);
1480 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs);
1485 ifmam = (struct ifma_msghdr *)rtm;
1486 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs);
1490 ifan = (struct if_announcemsghdr *)rtm;
1491 (void)printf("if# %d, what: ", ifan->ifan_index);
1492 switch (ifan->ifan_what) {
1493 case RTM_IEEE80211_ASSOC:
1494 printf("associate");
1496 case RTM_IEEE80211_REASSOC:
1497 printf("re-associate");
1499 case RTM_IEEE80211_DISASSOC:
1500 printf("disassociate");
1502 case RTM_IEEE80211_SCAN:
1503 printf("scan complete");
1505 case RTM_IEEE80211_JOIN:
1506 evlen = sizeof(ev.join);
1509 case RTM_IEEE80211_LEAVE:
1510 evlen = sizeof(ev.leave);
1513 case RTM_IEEE80211_MICHAEL:
1514 evlen = sizeof(ev.michael);
1517 case RTM_IEEE80211_REPLAY:
1518 evlen = sizeof(ev.replay);
1523 printf("#%d", ifan->ifan_what);
1526 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) {
1527 printf(" (truncated)\n");
1530 (void)memcpy(&ev, (ifan + 1), evlen);
1531 switch (ifan->ifan_what) {
1532 case RTM_IEEE80211_JOIN:
1533 case RTM_IEEE80211_LEAVE:
1534 printf(" mac %" PRIETHER,
1535 PRIETHER_ARGS(ev.join.iev_addr));
1537 case RTM_IEEE80211_REPLAY:
1538 case RTM_IEEE80211_MICHAEL:
1539 printf(" src %" PRIETHER " dst %" PRIETHER
1540 " cipher %" PRIu8 " keyix %" PRIu8,
1541 PRIETHER_ARGS(ev.replay.iev_src),
1542 PRIETHER_ARGS(ev.replay.iev_dst),
1543 ev.replay.iev_cipher,
1544 ev.replay.iev_keyix);
1545 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) {
1546 printf(" key rsc %#" PRIx64
1547 " frame rsc %#" PRIx64,
1548 ev.replay.iev_keyrsc, ev.replay.iev_rsc);
1556 case RTM_IFANNOUNCE:
1557 ifan = (struct if_announcemsghdr *)rtm;
1558 printf("if# %d, what: ", ifan->ifan_index);
1559 switch (ifan->ifan_what) {
1563 case IFAN_DEPARTURE:
1564 printf("departure");
1567 printf("#%d", ifan->ifan_what);
1574 printf("pid: %ld, seq %d, errno %d, flags:",
1575 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1576 bprintf(stdout, rtm->rtm_flags, routeflags);
1582 print_getmsg(struct rt_msghdr *rtm, int msglen)
1584 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
1585 struct sockaddr_dl *ifp = NULL;
1586 struct sockaddr *sa;
1590 printf(" route to: %s\n", routename(&so_dst.sa));
1591 if (rtm->rtm_version != RTM_VERSION) {
1592 warnx("routing message version %d not understood",
1596 if (rtm->rtm_msglen > msglen) {
1597 warnx("message length mismatch, in packet %d, returned %d",
1598 rtm->rtm_msglen, msglen);
1600 if (rtm->rtm_errno != 0) {
1601 errno = rtm->rtm_errno;
1602 warn("message indicates error %d", errno);
1605 cp = ((char *)(rtm + 1));
1607 for (i = 1; i != 0; i <<= 1)
1608 if (i & rtm->rtm_addrs) {
1609 sa = (struct sockaddr *)cp;
1621 if (sa->sa_family == AF_LINK &&
1622 ((struct sockaddr_dl *)sa)->sdl_nlen)
1623 ifp = (struct sockaddr_dl *)sa;
1628 if (dst != NULL && mask != NULL)
1629 mask->sa_family = dst->sa_family; /* XXX */
1631 printf("destination: %s\n", routename(dst));
1633 int savenflag = nflag;
1636 printf(" mask: %s\n", routename(mask));
1639 if (gate != NULL && rtm->rtm_flags & RTF_GATEWAY)
1640 printf(" gateway: %s\n", routename(gate));
1642 printf(" interface: %.*s\n",
1643 ifp->sdl_nlen, ifp->sdl_data);
1645 bprintf(stdout, rtm->rtm_flags, routeflags);
1647 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1648 #define msec(u) (((u) + 500) / 1000) /* usec to msec */
1651 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire msl,msec iwmax iw");
1652 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1653 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1654 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1655 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1656 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR));
1657 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT));
1658 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
1659 if (rtm->rtm_rmx.rmx_expire != 0) {
1661 clock_gettime(CLOCK_MONOTONIC, &sp);
1662 rtm->rtm_rmx.rmx_expire -= sp.tv_sec;
1664 printf("%8ld%c ", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
1665 printf("%8ld ", rtm->rtm_rmx.rmx_msl);
1666 printf("%5ld ", rtm->rtm_rmx.rmx_iwmaxsegs);
1667 printf("%3ld\n", rtm->rtm_rmx.rmx_iwcapsegs);
1670 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
1673 else if (rtm->rtm_addrs &~ RTA_IGN) {
1674 printf("sockaddrs: ");
1675 bprintf(stdout, rtm->rtm_addrs, addrnames);
1682 pmsg_common(struct rt_msghdr *rtm)
1684 printf("\nlocks: ");
1685 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
1687 bprintf(stdout, rtm->rtm_inits, metricnames);
1688 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs);
1692 pmsg_addrs(char *cp, int addrs)
1694 struct sockaddr *sa;
1701 printf("\nsockaddrs: ");
1702 bprintf(stdout, addrs, addrnames);
1704 for (i = 1; i != 0; i <<= 1)
1706 sa = (struct sockaddr *)cp;
1707 printf(" %s", routename(sa));
1715 bprintf(FILE *fp, int b, u_char *str)
1722 while ((i = *str++) != 0) {
1723 if (b & (1 << (i-1))) {
1730 for (; (i = *str) > 32; str++)
1741 keyword(const char *cp)
1743 const struct keytab *kt = keywords;
1745 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0)
1751 sodump(sup su, const char *which)
1753 switch (su->sa.sa_family) {
1755 printf("%s: link %s; ",
1756 which, link_ntoa(&su->sdl));
1759 printf("%s: inet %s; ",
1760 which, inet_ntoa(su->sin.sin_addr));
1776 sockaddr(const char *addr, struct sockaddr *sa)
1778 char *cp = (char *)sa;
1779 int size = sa->sa_len;
1780 char *cplim = cp + size;
1781 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
1783 memset(cp, 0, size);
1786 if ((*addr >= '0') && (*addr <= '9')) {
1788 } else if ((*addr >= 'a') && (*addr <= 'f')) {
1789 new = *addr - 'a' + 10;
1790 } else if ((*addr >= 'A') && (*addr <= 'F')) {
1791 new = *addr - 'A' + 10;
1792 } else if (*addr == '\0')
1797 switch (state /* | INPUT */) {
1798 case GOTTWO | DIGIT:
1799 *cp++ = byte; /*FALLTHROUGH*/
1800 case VIRGIN | DIGIT:
1801 state = GOTONE; byte = new; continue;
1802 case GOTONE | DIGIT:
1803 state = GOTTWO; byte = new + (byte << 4); continue;
1804 default: /* | DELIM */
1805 state = VIRGIN; *cp++ = byte; byte = 0; continue;
1808 *cp++ = byte; /* FALLTHROUGH */
1813 } while (cp < cplim);
1814 sa->sa_len = cp - (char *)sa;