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>
53 #include <net/route.h>
54 #include <net/if_dl.h>
55 #include <netinet/in.h>
56 #include <netinet/if_ether.h>
57 #include <netatalk/at.h>
58 #include <arpa/inet.h>
80 struct ortentry route;
83 struct sockaddr_in sin;
85 struct sockaddr_in6 sin6;
87 struct sockaddr_at sat;
88 struct sockaddr_dl sdl;
89 struct sockaddr_inarp sinarp;
90 struct sockaddr_storage ss; /* added to avoid memory overrun */
91 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp;
93 typedef union sockunion *sup;
96 int forcehost, forcenet, doflush, nflag, af, qflag, tflag;
97 int iflag, verbose, aflen = sizeof (struct sockaddr_in);
98 int locking, lockrest, debugonly;
99 struct rt_metrics rt_metrics;
103 static int atalk_aton(const char *, struct at_addr *);
104 static char *atalk_ntoa(struct at_addr);
105 static void bprintf(FILE *, int, u_char *);
106 static void flushroutes(int argc, char *argv[]);
107 static int getaddr(int, char *, struct hostent **);
108 static int keyword(const char *);
109 static void inet_makenetandmask(u_long, struct sockaddr_in *, u_long);
111 static int inet6_makenetandmask(struct sockaddr_in6 *, const char *);
113 static void interfaces(void);
114 static void mask_addr(void);
115 static void monitor(void);
116 static const char *netname(struct sockaddr *);
117 static void newroute(int, char **);
118 static void pmsg_addrs(char *, int, size_t);
119 static void pmsg_common(struct rt_msghdr *, size_t);
120 static int prefixlen(const char *);
121 static void print_getmsg(struct rt_msghdr *, int);
122 static void print_rtmsg(struct rt_msghdr *, size_t);
123 static const char *routename(struct sockaddr *);
124 static int rtmsg(int, int);
125 static void set_metric(char *, int);
126 static void sockaddr(char *, struct sockaddr *);
127 static void sodump(sup, const char *);
128 extern char *iso_ntoa(void);
130 static void usage(const char *) __dead2;
133 usage(const char *cp)
136 warnx("bad keyword: %s", cp);
137 (void) fprintf(stderr,
138 "usage: route [-dnqtv] command [[modifiers] args]\n");
144 main(int argc, char **argv)
151 while ((ch = getopt(argc, argv, "nqdtv")) != -1)
178 s = open(_PATH_DEVNULL, O_WRONLY, 0);
180 s = socket(PF_ROUTE, SOCK_RAW, 0);
182 err(EX_OSERR, "socket");
184 switch (keyword(*argv)) {
194 newroute(argc, argv);
202 flushroutes(argc, argv);
211 * Purge all entries in the routing tables not
212 * associated with network interfaces.
215 flushroutes(int argc, char *argv[])
218 int mib[6], rlen, seqno, count = 0;
219 char *buf, *next, *lim;
220 struct rt_msghdr *rtm;
222 if (uid != 0 && !debugonly) {
223 errx(EX_NOPERM, "must be root to alter routing table");
225 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
228 if (argc == 2 && **argv == '-')
229 switch (keyword(*argv + 1)) {
252 mib[2] = 0; /* protocol */
253 mib[3] = 0; /* wildcard address family */
254 mib[4] = NET_RT_DUMP;
255 mib[5] = 0; /* no flags */
256 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
257 err(EX_OSERR, "route-sysctl-estimate");
258 if ((buf = malloc(needed)) == NULL)
259 errx(EX_OSERR, "malloc failed");
260 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
261 if (errno == ENOMEM && count++ < 10) {
262 warnx("Routing table grew, retrying");
267 err(EX_OSERR, "route-sysctl-get");
271 (void) printf("Examining routing table from sysctl\n");
273 for (next = buf; next < lim; next += rtm->rtm_msglen) {
274 rtm = (struct rt_msghdr *)next;
276 print_rtmsg(rtm, rtm->rtm_msglen);
277 if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
280 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
282 if (sa->sa_family != af)
287 rtm->rtm_type = RTM_DELETE;
288 rtm->rtm_seq = seqno;
289 rlen = write(s, next, rtm->rtm_msglen);
290 if (rlen < 0 && errno == EPERM)
291 err(1, "write to routing socket");
292 if (rlen < (int)rtm->rtm_msglen) {
293 warn("write to routing socket");
294 (void) printf("got only %d for rlen\n", rlen);
303 print_rtmsg(rtm, rlen);
305 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
306 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
307 routename(sa) : netname(sa));
308 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa);
309 (void) printf("%-20.20s ", routename(sa));
310 (void) printf("done\n");
316 routename(struct sockaddr *sa)
319 static char line[MAXHOSTNAMELEN + 1];
321 static char domain[MAXHOSTNAMELEN + 1];
322 static int first = 1, n;
326 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
327 (cp = strchr(domain, '.'))) {
328 domain[MAXHOSTNAMELEN] = '\0';
329 (void) strcpy(domain, cp + 1);
335 strcpy(line, "default");
336 else switch (sa->sa_family) {
340 in = ((struct sockaddr_in *)sa)->sin_addr;
343 if (in.s_addr == INADDR_ANY || sa->sa_len < 4)
345 if (cp == NULL && !nflag) {
346 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
350 cptr = strchr(hp->h_name, '.');
352 strcmp(cptr + 1, domain) == 0)
358 strncpy(line, cp, sizeof(line) - 1);
359 line[sizeof(line) - 1] = '\0';
361 (void) sprintf(line, "%s", inet_ntoa(in));
368 struct sockaddr_in6 sin6; /* use static var for safety */
371 memset(&sin6, 0, sizeof(sin6));
372 memcpy(&sin6, sa, sa->sa_len);
373 sin6.sin6_len = sizeof(struct sockaddr_in6);
374 sin6.sin6_family = AF_INET6;
376 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
377 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
378 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) ||
379 IN6_IS_ADDR_MC_NODELOCAL(&sin6.sin6_addr)) &&
380 sin6.sin6_scope_id == 0) {
382 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
383 sin6.sin6_addr.s6_addr[2] = 0;
384 sin6.sin6_addr.s6_addr[3] = 0;
388 niflags |= NI_NUMERICHOST;
389 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
390 line, sizeof(line), NULL, 0, niflags) != 0)
391 strncpy(line, "invalid", sizeof(line));
398 (void) snprintf(line, sizeof(line), "atalk %s",
399 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
403 return (link_ntoa((struct sockaddr_dl *)sa));
407 u_short *sp = (u_short *)sa;
408 u_short *splim = sp + ((sa->sa_len + 1) >> 1);
409 char *cps = line + sprintf(line, "(%d)", sa->sa_family);
410 char *cpe = line + sizeof(line);
412 while (++sp < splim && cps < cpe) /* start with sa->sa_data */
413 if ((n = snprintf(cps, cpe - cps, " %x", *sp)) > 0)
424 * Return the name of the network whose address is given.
425 * The address is assumed to be that of a net or subnet, not a host.
428 netname(struct sockaddr *sa)
430 const char *cp = NULL;
431 static char line[MAXHOSTNAMELEN + 1];
432 struct netent *np = NULL;
437 switch (sa->sa_family) {
441 in = ((struct sockaddr_in *)sa)->sin_addr;
443 i = in.s_addr = ntohl(in.s_addr);
448 mask = IN_CLASSA_NET;
450 } else if (IN_CLASSB(i)) {
451 mask = IN_CLASSB_NET;
454 mask = IN_CLASSC_NET;
458 * If there are more bits than the standard mask
459 * would suggest, subnets must be in use.
460 * Guess at the subnet mask, assuming reasonable
461 * width subnet fields.
463 while (in.s_addr & ~mask)
464 mask |= mask >> subnetshift;
465 net = in.s_addr & mask;
466 while ((mask & 1) == 0)
467 mask >>= 1, net >>= 1;
468 np = getnetbyaddr(net, AF_INET);
472 #define C(x) (unsigned)((x) & 0xff)
474 strncpy(line, cp, sizeof(line));
475 else if ((in.s_addr & 0xffffff) == 0)
476 (void) sprintf(line, "%u", C(in.s_addr >> 24));
477 else if ((in.s_addr & 0xffff) == 0)
478 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24),
480 else if ((in.s_addr & 0xff) == 0)
481 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
482 C(in.s_addr >> 16), C(in.s_addr >> 8));
484 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
485 C(in.s_addr >> 16), C(in.s_addr >> 8),
494 struct sockaddr_in6 sin6; /* use static var for safety */
497 memset(&sin6, 0, sizeof(sin6));
498 memcpy(&sin6, sa, sa->sa_len);
499 sin6.sin6_len = sizeof(struct sockaddr_in6);
500 sin6.sin6_family = AF_INET6;
502 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
503 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
504 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) ||
505 IN6_IS_ADDR_MC_NODELOCAL(&sin6.sin6_addr)) &&
506 sin6.sin6_scope_id == 0) {
508 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
509 sin6.sin6_addr.s6_addr[2] = 0;
510 sin6.sin6_addr.s6_addr[3] = 0;
514 niflags |= NI_NUMERICHOST;
515 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
516 line, sizeof(line), NULL, 0, niflags) != 0)
517 strncpy(line, "invalid", sizeof(line));
524 (void) snprintf(line, sizeof(line), "atalk %s",
525 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
529 return (link_ntoa((struct sockaddr_dl *)sa));
534 u_short *sp = (u_short *)sa->sa_data;
535 u_short *splim = sp + ((sa->sa_len + 1)>>1);
536 char *cps = line + sprintf(line, "af %d:", sa->sa_family);
537 char *cpe = line + sizeof(line);
539 while (sp < splim && cps < cpe)
540 if ((n = snprintf(cps, cpe - cps, " %x", *sp++)) > 0)
551 set_metric(char *value, int key)
554 u_long noval, *valp = &noval;
557 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
558 caseof(K_MTU, RTV_MTU, rmx_mtu);
559 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
560 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
561 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
562 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
563 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
564 caseof(K_RTT, RTV_RTT, rmx_rtt);
565 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
566 caseof(K_WEIGHT, RTV_WEIGHT, rmx_weight);
569 if (lockrest || locking)
570 rt_metrics.rmx_locks |= flag;
577 newroute(int argc, char **argv)
580 const char *dest = "", *gateway = "", *errmsg;
581 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC;
583 struct hostent *hp = 0;
586 errx(EX_NOPERM, "must be root to alter routing table");
589 if (*cmd != 'g' && *cmd != 's')
590 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
593 if (**(++argv)== '-') {
594 switch (key = keyword(1 + *argv)) {
597 aflen = sizeof(struct sockaddr_dl);
601 aflen = sizeof(struct sockaddr_in);
606 aflen = sizeof(struct sockaddr_in6);
611 aflen = sizeof(struct sockaddr_at);
615 aflen = sizeof(union sockunion);
622 flags &= ~RTF_STATIC;
637 flags |= RTF_BLACKHOLE;
649 flags |= RTF_XRESOLVE;
658 flags &= ~RTF_STICKY;
663 (void) getaddr(RTA_IFA, *++argv, 0);
668 (void) getaddr(RTA_IFP, *++argv, 0);
673 (void) getaddr(RTA_GENMASK, *++argv, 0);
678 (void) getaddr(RTA_GATEWAY, *++argv, 0);
683 ishost = getaddr(RTA_DST, *++argv, &hp);
689 (void) getaddr(RTA_NETMASK, *++argv, 0);
697 if (prefixlen(*++argv) == -1) {
716 set_metric(*++argv, key);
722 if ((rtm_addrs & RTA_DST) == 0) {
724 ishost = getaddr(RTA_DST, *argv, &hp);
725 } else if ((rtm_addrs & RTA_GATEWAY) == 0) {
727 (void) getaddr(RTA_GATEWAY, *argv, &hp);
729 (void) getaddr(RTA_NETMASK, *argv, 0);
737 if (af == AF_INET6) {
738 rtm_addrs &= ~RTA_NETMASK;
739 memset((void *)&so_mask, 0, sizeof(so_mask));
749 flags |= RTF_GATEWAY;
751 so_dst.sinarp.sin_other = SIN_PROXY;
752 flags |= RTF_ANNOUNCE;
754 for (attempts = 1; ; attempts++) {
756 if ((ret = rtmsg(*cmd, flags)) == 0)
758 if (errno != ENETUNREACH && errno != ESRCH)
760 if (af == AF_INET && *gateway != '\0' &&
761 hp != NULL && hp->h_addr_list[1] != NULL) {
763 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0],
764 MIN((size_t)hp->h_length,
765 sizeof(so_gate.sin.sin_addr)));
769 if (*cmd == 'g' || *cmd == 's')
773 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest);
775 (void) printf(": gateway %s", gateway);
776 if (attempts > 1 && ret == 0 && af == AF_INET)
777 (void) printf(" (%s)",
778 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr));
785 errmsg = "not in table";
788 errmsg = "entry in use";
791 errmsg = "not enough memory";
794 /* handle recursion avoidance in rt_setgate() */
795 errmsg = "gateway uses the same route";
798 errmsg = "route already in table";
801 errmsg = strerror(oerrno);
804 (void) printf(": %s\n", errmsg);
811 inet_makenetandmask(u_long net, struct sockaddr_in *sin, u_long bits)
813 u_long addr, mask = 0;
816 rtm_addrs |= RTA_NETMASK;
818 * XXX: This approach unable to handle 0.0.0.1/32 correctly
819 * as inet_network() converts 0.0.0.1 and 1 equally.
822 addr = net << IN_CLASSA_NSHIFT;
823 else if (net <= 0xffff)
824 addr = net << IN_CLASSB_NSHIFT;
825 else if (net <= 0xffffff)
826 addr = net << IN_CLASSC_NSHIFT;
830 * If no /xx was specified we must calculate the
833 if ((bits == 0) && (addr != 0)) {
835 for(i=0,j=0xff; i<4; i++) {
841 /* i holds the first non zero bit */
845 mask = 0xffffffff << (32 - bits);
847 sin->sin_addr.s_addr = htonl(addr);
849 sin->sin_addr.s_addr = htonl(mask);
852 cp = (char *)(&sin->sin_addr + 1);
853 while (*--cp == 0 && cp > (char *)sin)
855 sin->sin_len = 1 + cp - (char *)sin;
860 * XXX the function may need more improvement...
863 inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen)
868 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
869 sin6->sin6_scope_id == 0) {
871 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
872 /* aggregatable global unicast - RFC2374 */
873 memset(&in6, 0, sizeof(in6));
874 if (!memcmp(&sin6->sin6_addr.s6_addr[8],
880 if (plen == NULL || strcmp(plen, "128") == 0)
882 rtm_addrs |= RTA_NETMASK;
889 * Interpret an argument as a network address of some kind,
890 * returning 1 if a host address, 0 if a network address.
893 getaddr(int which, char *str, struct hostent **hpp)
900 int afamily; /* local copy of af so we can change it */
904 aflen = sizeof(struct sockaddr_in);
915 struct ifaddrs *ifap, *ifa;
916 struct sockaddr_dl *sdl = NULL;
918 if (getifaddrs(&ifap))
919 err(1, "getifaddrs");
921 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
922 if (ifa->ifa_addr->sa_family != AF_LINK)
925 if (strcmp(str, ifa->ifa_name) != 0)
928 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
930 /* If we found it, then use it */
933 * Copy is safe since we have a
934 * sockaddr_storage member in sockunion{}.
935 * Note that we need to copy before calling
938 memcpy(&su->sdl, sdl, sdl->sdl_len);
959 usage("internal error");
962 su->sa.sa_len = aflen;
963 su->sa.sa_family = afamily; /* cases that don't want it have left already */
964 if (strcmp(str, "default") == 0) {
966 * Default is net 0.0.0.0/0
972 bzero(su, sizeof(*su)); /* for readability */
974 getaddr(RTA_NETMASK, str, 0);
979 bzero(su, sizeof(*su)); /* for readability */
988 struct addrinfo hints, *res;
992 if (which == RTA_DST && (q = strchr(str, '/')) != NULL)
994 memset(&hints, 0, sizeof(hints));
995 hints.ai_family = afamily; /*AF_INET6*/
996 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
997 ecode = getaddrinfo(str, NULL, &hints, &res);
998 if (ecode != 0 || res->ai_family != AF_INET6 ||
999 res->ai_addrlen != sizeof(su->sin6)) {
1000 (void) fprintf(stderr, "%s: %s\n", str,
1001 gai_strerror(ecode));
1004 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6));
1006 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) ||
1007 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr) ||
1008 IN6_IS_ADDR_MC_NODELOCAL(&su->sin6.sin6_addr)) &&
1009 su->sin6.sin6_scope_id) {
1010 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] =
1011 htons(su->sin6.sin6_scope_id);
1012 su->sin6.sin6_scope_id = 0;
1018 if (which == RTA_DST)
1019 return (inet6_makenetandmask(&su->sin6, q));
1025 if (!atalk_aton(str, &su->sat.sat_addr))
1026 errx(EX_NOHOST, "bad address: %s", str);
1027 rtm_addrs |= RTA_NETMASK;
1028 return(forcehost || su->sat.sat_addr.s_node != 0);
1031 link_addr(str, &su->sdl);
1036 su->sa.sa_len = sizeof(*su);
1037 sockaddr(str, &su->sa);
1049 q = strchr(str,'/');
1050 if (q != NULL && which == RTA_DST) {
1052 if ((val = inet_network(str)) != INADDR_NONE) {
1053 inet_makenetandmask(
1054 val, &su->sin, strtoul(q+1, 0, 0));
1059 if ((which != RTA_DST || forcenet == 0) &&
1060 inet_aton(str, &su->sin.sin_addr)) {
1061 val = su->sin.sin_addr.s_addr;
1062 if (which != RTA_DST || forcehost ||
1063 inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
1070 if (which == RTA_DST && forcehost == 0 &&
1071 ((val = inet_network(str)) != INADDR_NONE ||
1072 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) {
1074 inet_makenetandmask(val, &su->sin, 0);
1077 hp = gethostbyname(str);
1080 su->sin.sin_family = hp->h_addrtype;
1081 memmove((char *)&su->sin.sin_addr, hp->h_addr,
1082 MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr)));
1085 errx(EX_NOHOST, "bad address: %s", str);
1089 prefixlen(const char *str)
1091 int len = atoi(str), q, r;
1095 rtm_addrs |= RTA_NETMASK;
1100 p = (char *)&so_mask.sin6.sin6_addr;
1105 p = (char *)&so_mask.sin.sin_addr;
1108 fprintf(stderr, "prefixlen not supported in this af\n");
1112 if (len < 0 || max < len) {
1113 fprintf(stderr, "%s: bad value\n", str);
1119 so_mask.sa.sa_family = af;
1120 so_mask.sa.sa_len = aflen;
1121 memset((void *)p, 0, max / 8);
1123 memset((void *)p, 0xff, q);
1125 *((u_char *)p + q) = (0xff00 >> r) & 0xff;
1137 char *buf, *lim, *next, count = 0;
1138 struct rt_msghdr *rtm;
1143 mib[2] = 0; /* protocol */
1144 mib[3] = 0; /* wildcard address family */
1145 mib[4] = NET_RT_IFLIST;
1146 mib[5] = 0; /* no flags */
1147 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
1148 err(EX_OSERR, "route-sysctl-estimate");
1149 if ((buf = malloc(needed)) == NULL)
1150 errx(EX_OSERR, "malloc failed");
1151 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
1152 if (errno == ENOMEM && count++ < 10) {
1153 warnx("Routing table grew, retrying");
1158 err(EX_OSERR, "actual retrieval of interface table");
1161 for (next = buf; next < lim; next += rtm->rtm_msglen) {
1162 rtm = (struct rt_msghdr *)next;
1163 print_rtmsg(rtm, rtm->rtm_msglen);
1180 n = read(s, msg, 2048);
1182 (void) printf("\ngot message of size %d on %s", n, ctime(&now));
1183 print_rtmsg((struct rt_msghdr *)msg, n);
1188 struct rt_msghdr m_rtm;
1193 rtmsg(int cmd, int flags)
1197 char *cp = m_rtmsg.m_space;
1200 #define NEXTADDR(w, u) \
1201 if (rtm_addrs & (w)) {\
1202 l = SA_SIZE(&(u.sa)); memmove(cp, &(u), l); cp += l;\
1203 if (verbose) sodump(&(u),#u);\
1207 memset(&m_rtmsg, 0, sizeof(m_rtmsg));
1210 else if (cmd == 'c')
1212 else if (cmd == 'g' || cmd == 's') {
1214 if (so_ifp.sa.sa_family == 0) {
1215 so_ifp.sa.sa_family = AF_LINK;
1216 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
1217 rtm_addrs |= RTA_IFP;
1221 #define rtm m_rtmsg.m_rtm
1223 rtm.rtm_flags = flags;
1224 rtm.rtm_version = RTM_VERSION;
1225 rtm.rtm_seq = ++seq;
1226 rtm.rtm_addrs = rtm_addrs;
1227 rtm.rtm_rmx = rt_metrics;
1228 rtm.rtm_inits = rtm_inits;
1230 if (rtm_addrs & RTA_NETMASK)
1232 NEXTADDR(RTA_DST, so_dst);
1233 NEXTADDR(RTA_GATEWAY, so_gate);
1234 NEXTADDR(RTA_NETMASK, so_mask);
1235 NEXTADDR(RTA_GENMASK, so_genmask);
1236 NEXTADDR(RTA_IFP, so_ifp);
1237 NEXTADDR(RTA_IFA, so_ifa);
1238 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
1240 print_rtmsg(&rtm, l);
1243 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
1245 err(1, "writing to routing socket");
1246 warn("writing to routing socket");
1249 if (cmd == RTM_GET) {
1251 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
1252 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
1254 warn("read from routing socket");
1256 print_getmsg(&rtm, l);
1265 int olen = so_mask.sa.sa_len;
1266 char *cp1 = olen + (char *)&so_mask, *cp2;
1268 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; )
1270 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask;
1273 if ((rtm_addrs & RTA_DST) == 0)
1275 switch (so_dst.sa.sa_family) {
1284 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst;
1285 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst;
1288 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask;
1289 while (cp1 > so_dst.sa.sa_data)
1293 const char *msgtypes[] = {
1295 "RTM_ADD: Add Route",
1296 "RTM_DELETE: Delete Route",
1297 "RTM_CHANGE: Change Metrics or flags",
1298 "RTM_GET: Report Metrics",
1299 "RTM_LOSING: Kernel Suspects Partitioning",
1300 "RTM_REDIRECT: Told to use different route",
1301 "RTM_MISS: Lookup failed on this address",
1302 "RTM_LOCK: fix specified metrics",
1303 "RTM_OLDADD: caused by SIOCADDRT",
1304 "RTM_OLDDEL: caused by SIOCDELRT",
1305 "RTM_RESOLVE: Route created by cloning",
1306 "RTM_NEWADDR: address being added to iface",
1307 "RTM_DELADDR: address being removed from iface",
1308 "RTM_IFINFO: iface status change",
1309 "RTM_NEWMADDR: new multicast group membership on iface",
1310 "RTM_DELMADDR: multicast group membership removed from iface",
1311 "RTM_IFANNOUNCE: interface arrival/departure",
1312 "RTM_IEEE80211: IEEE 802.11 wireless event",
1315 char metricnames[] =
1316 "\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire"
1319 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE"
1320 "\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE"
1321 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3"
1322 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY";
1324 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1325 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1326 "\017LINK2\020MULTICAST";
1328 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
1330 static const char errfmt[] =
1331 "\n%s: truncated route message, only %zu bytes left\n";
1334 print_rtmsg(struct rt_msghdr *rtm, size_t msglen)
1336 struct if_msghdr *ifm;
1337 struct ifa_msghdr *ifam;
1339 struct ifma_msghdr *ifmam;
1341 struct if_announcemsghdr *ifan;
1346 if (rtm->rtm_version != RTM_VERSION) {
1347 (void) printf("routing message version %d not understood\n",
1351 if (rtm->rtm_type < sizeof(msgtypes) / sizeof(msgtypes[0]))
1352 (void)printf("%s: ", msgtypes[rtm->rtm_type]);
1354 (void)printf("unknown type %d: ", rtm->rtm_type);
1355 (void)printf("len %d, ", rtm->rtm_msglen);
1357 #define REQUIRE(x) do { \
1358 if (msglen < sizeof(x)) \
1361 msglen -= sizeof(x); \
1364 switch (rtm->rtm_type) {
1366 REQUIRE(struct if_msghdr);
1367 ifm = (struct if_msghdr *)rtm;
1368 (void) printf("if# %d, ", ifm->ifm_index);
1369 switch (ifm->ifm_data.ifi_link_state) {
1370 case LINK_STATE_DOWN:
1380 (void) printf("link: %s, flags:", state);
1381 bprintf(stdout, ifm->ifm_flags, ifnetflags);
1382 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs, msglen);
1386 REQUIRE(struct ifa_msghdr);
1387 ifam = (struct ifa_msghdr *)rtm;
1388 (void) printf("metric %d, flags:", ifam->ifam_metric);
1389 bprintf(stdout, ifam->ifam_flags, routeflags);
1390 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs, msglen);
1395 REQUIRE(struct ifma_msghdr);
1396 ifmam = (struct ifma_msghdr *)rtm;
1397 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs, msglen);
1400 case RTM_IFANNOUNCE:
1401 REQUIRE(struct if_announcemsghdr);
1402 ifan = (struct if_announcemsghdr *)rtm;
1403 (void) printf("if# %d, what: ", ifan->ifan_index);
1404 switch (ifan->ifan_what) {
1408 case IFAN_DEPARTURE:
1409 printf("departure");
1412 printf("#%d", ifan->ifan_what);
1419 (void) printf("pid: %ld, seq %d, errno %d, flags:",
1420 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1421 bprintf(stdout, rtm->rtm_flags, routeflags);
1422 pmsg_common(rtm, msglen);
1428 (void)printf(errfmt, __func__, msglen);
1433 print_getmsg(struct rt_msghdr *rtm, int msglen)
1435 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
1436 struct sockaddr_dl *ifp = NULL;
1437 struct sockaddr *sa;
1441 (void) printf(" route to: %s\n",
1442 routename((struct sockaddr *)&so_dst));
1443 if (rtm->rtm_version != RTM_VERSION) {
1444 warnx("routing message version %d not understood",
1448 if (rtm->rtm_msglen > msglen) {
1449 warnx("message length mismatch, in packet %d, returned %d",
1450 rtm->rtm_msglen, msglen);
1452 if (rtm->rtm_errno) {
1453 errno = rtm->rtm_errno;
1454 warn("message indicates error %d", errno);
1457 cp = ((char *)(rtm + 1));
1459 for (i = 1; i; i <<= 1)
1460 if (i & rtm->rtm_addrs) {
1461 sa = (struct sockaddr *)cp;
1473 if (sa->sa_family == AF_LINK &&
1474 ((struct sockaddr_dl *)sa)->sdl_nlen)
1475 ifp = (struct sockaddr_dl *)sa;
1481 mask->sa_family = dst->sa_family; /* XXX */
1483 (void)printf("destination: %s\n", routename(dst));
1485 int savenflag = nflag;
1488 (void)printf(" mask: %s\n", routename(mask));
1491 if (gate && rtm->rtm_flags & RTF_GATEWAY)
1492 (void)printf(" gateway: %s\n", routename(gate));
1494 (void)printf(" interface: %.*s\n",
1495 ifp->sdl_nlen, ifp->sdl_data);
1496 (void)printf(" flags: ");
1497 bprintf(stdout, rtm->rtm_flags, routeflags);
1499 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1500 #define msec(u) (((u) + 500) / 1000) /* usec to msec */
1502 (void) printf("\n%s\n", "\
1503 recvpipe sendpipe ssthresh rtt,msec mtu weight expire");
1504 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1505 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1506 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1507 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1508 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
1509 printf("%8ld%c ", rtm->rtm_rmx.rmx_weight, lock(WEIGHT));
1510 if (rtm->rtm_rmx.rmx_expire)
1511 rtm->rtm_rmx.rmx_expire -= time(0);
1512 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
1515 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
1517 pmsg_common(rtm, msglen);
1518 else if (rtm->rtm_addrs &~ RTA_IGN) {
1519 (void) printf("sockaddrs: ");
1520 bprintf(stdout, rtm->rtm_addrs, addrnames);
1527 pmsg_common(struct rt_msghdr *rtm, size_t msglen)
1529 (void) printf("\nlocks: ");
1530 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
1531 (void) printf(" inits: ");
1532 bprintf(stdout, rtm->rtm_inits, metricnames);
1533 if (msglen > sizeof(struct rt_msghdr))
1534 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs,
1535 msglen - sizeof(struct rt_msghdr));
1537 (void) fflush(stdout);
1541 pmsg_addrs(char *cp, int addrs, size_t len)
1543 struct sockaddr *sa;
1547 (void) putchar('\n');
1550 (void) printf("\nsockaddrs: ");
1551 bprintf(stdout, addrs, addrnames);
1552 (void) putchar('\n');
1553 for (i = 1; i != 0; i <<= 1)
1555 sa = (struct sockaddr *)cp;
1556 if (len == 0 || len < SA_SIZE(sa)) {
1557 (void) printf(errfmt, __func__, len);
1560 (void) printf(" %s", routename(sa));
1564 (void) putchar('\n');
1565 (void) fflush(stdout);
1569 bprintf(FILE *fp, int b, u_char *str)
1576 while ((i = *str++) != 0) {
1577 if (b & (1 << (i-1))) {
1584 for (; (i = *str) > 32; str++)
1591 (void) putc('>', fp);
1595 keyword(const char *cp)
1597 struct keytab *kt = keywords;
1599 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0)
1605 sodump(sup su, const char *which)
1607 switch (su->sa.sa_family) {
1609 (void) printf("%s: link %s; ",
1610 which, link_ntoa(&su->sdl));
1613 (void) printf("%s: inet %s; ",
1614 which, inet_ntoa(su->sin.sin_addr));
1617 (void) printf("%s: atalk %s; ",
1618 which, atalk_ntoa(su->sat.sat_addr));
1621 (void) fflush(stdout);
1634 sockaddr(char *addr, struct sockaddr *sa)
1636 char *cp = (char *)sa;
1637 int size = sa->sa_len;
1638 char *cplim = cp + size;
1639 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
1641 memset(cp, 0, size);
1644 if ((*addr >= '0') && (*addr <= '9')) {
1646 } else if ((*addr >= 'a') && (*addr <= 'f')) {
1647 new = *addr - 'a' + 10;
1648 } else if ((*addr >= 'A') && (*addr <= 'F')) {
1649 new = *addr - 'A' + 10;
1650 } else if (*addr == '\0')
1655 switch (state /* | INPUT */) {
1656 case GOTTWO | DIGIT:
1657 *cp++ = byte; /*FALLTHROUGH*/
1658 case VIRGIN | DIGIT:
1659 state = GOTONE; byte = new; continue;
1660 case GOTONE | DIGIT:
1661 state = GOTTWO; byte = new + (byte << 4); continue;
1662 default: /* | DELIM */
1663 state = VIRGIN; *cp++ = byte; byte = 0; continue;
1666 *cp++ = byte; /* FALLTHROUGH */
1671 } while (cp < cplim);
1672 sa->sa_len = cp - (char *)sa;
1676 atalk_aton(const char *text, struct at_addr *addr)
1680 if (sscanf(text, "%u.%u", &net, &node) != 2
1681 || net > 0xffff || node > 0xff)
1683 addr->s_net = htons(net);
1684 addr->s_node = node;
1689 atalk_ntoa(struct at_addr at)
1691 static char buf[20];
1693 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);