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>
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 verbose, aflen = sizeof (struct sockaddr_in);
98 int locking, lockrest, debugonly;
99 struct rt_metrics rt_metrics;
102 static int defaultfib;
105 static int atalk_aton(const char *, struct at_addr *);
106 static char *atalk_ntoa(struct at_addr);
107 static void bprintf(FILE *, int, u_char *);
108 static void flushroutes(int argc, char *argv[]);
109 static int flushroutes_fib(int);
110 static int getaddr(int, char *, struct hostent **, int);
111 static int keyword(const char *);
112 static void inet_makenetandmask(u_long, struct sockaddr_in *, u_long);
114 static int inet6_makenetandmask(struct sockaddr_in6 *, const char *);
116 static void interfaces(void);
117 static void mask_addr(void);
118 static void monitor(int, char*[]);
119 static const char *netname(struct sockaddr *);
120 static void newroute(int, char **);
121 static int newroute_fib(int, char *, int);
122 static void pmsg_addrs(char *, int, size_t);
123 static void pmsg_common(struct rt_msghdr *, size_t);
124 static int prefixlen(const char *);
125 static void print_getmsg(struct rt_msghdr *, int, int);
126 static void print_rtmsg(struct rt_msghdr *, size_t);
127 static const char *routename(struct sockaddr *);
128 static int rtmsg(int, int, int);
129 static void set_metric(char *, int);
130 static int set_sofib(int);
131 static int set_procfib(int);
132 static void sockaddr(char *, struct sockaddr *);
133 static void sodump(sup, const char *);
134 extern char *iso_ntoa(void);
137 TAILQ_ENTRY(fibl) fl_next;
143 TAILQ_HEAD(fibl_head_t, fibl) fibl_head;
145 static int fiboptlist_csv(const char *, struct fibl_head_t *);
146 static int fiboptlist_range(const char *, struct fibl_head_t *);
148 static void usage(const char *) __dead2;
151 usage(const char *cp)
154 warnx("bad keyword: %s", cp);
155 (void) fprintf(stderr,
156 "usage: route [-dnqtv] command [[modifiers] args]\n");
162 main(int argc, char **argv)
170 while ((ch = getopt(argc, argv, "nqdtv")) != -1)
197 s = open(_PATH_DEVNULL, O_WRONLY, 0);
199 s = socket(PF_ROUTE, SOCK_RAW, 0);
201 err(EX_OSERR, "socket");
203 len = sizeof(numfibs);
204 if (sysctlbyname("net.fibs", (void *)&numfibs, &len, NULL, 0) == -1)
207 len = sizeof(defaultfib);
209 sysctlbyname("net.my_fibnum", (void *)&defaultfib, &len, NULL,
214 switch (keyword(*argv)) {
224 newroute(argc, argv);
232 flushroutes(argc, argv);
246 return (setsockopt(s, SOL_SOCKET, SO_SETFIB, (void *)&fib,
256 return (setfib(fib));
260 fiboptlist_range(const char *arg, struct fibl_head_t *flh)
263 char *str0, *str, *token, *endptr;
264 int fib[2], i, error;
266 str0 = str = strdup(arg);
269 while ((token = strsep(&str, "-")) != NULL) {
274 fib[i] = strtol(token, &endptr, 0);
276 if (*endptr != '\0' ||
278 (numfibs != -1 && fib[i] > numfibs - 1))
288 goto fiboptlist_range_ret;
291 if (fib[0] >= fib[1]) {
293 goto fiboptlist_range_ret;
295 for (i = fib[0]; i <= fib[1]; i++) {
296 fl = calloc(1, sizeof(*fl));
299 goto fiboptlist_range_ret;
302 TAILQ_INSERT_TAIL(flh, fl, fl_next);
304 fiboptlist_range_ret:
311 fiboptlist_csv(const char *arg, struct fibl_head_t *flh)
314 char *str0, *str, *token, *endptr;
317 if (strcmp("all", arg) == 0) {
318 str = calloc(1, ALLSTRLEN);
321 goto fiboptlist_csv_ret;
324 snprintf(str, ALLSTRLEN - 1, "%d-%d", 0, numfibs - 1);
326 snprintf(str, ALLSTRLEN - 1, "%d", 0);
327 } else if (strcmp("default", arg) == 0) {
328 str0 = str = calloc(1, ALLSTRLEN);
331 goto fiboptlist_csv_ret;
333 snprintf(str, ALLSTRLEN - 1, "%d", defaultfib);
335 str0 = str = strdup(arg);
338 while ((token = strsep(&str, ",")) != NULL) {
339 if (*token != '-' && strchr(token, '-') != NULL) {
340 error = fiboptlist_range(token, flh);
342 goto fiboptlist_csv_ret;
345 fib = strtol(token, &endptr, 0);
347 if (*endptr != '\0' ||
349 (numfibs != -1 && fib > numfibs - 1))
354 goto fiboptlist_csv_ret;
356 fl = calloc(1, sizeof(*fl));
359 goto fiboptlist_csv_ret;
362 TAILQ_INSERT_TAIL(flh, fl, fl_next);
371 * Purge all entries in the routing tables not
372 * associated with network interfaces.
375 flushroutes(int argc, char *argv[])
380 if (uid != 0 && !debugonly) {
381 errx(EX_NOPERM, "must be root to alter routing table");
383 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
385 TAILQ_INIT(&fibl_head);
391 switch (keyword(*argv + 1)) {
409 error = fiboptlist_csv(*++argv, &fibl_head);
411 errx(EX_USAGE, "invalid fib number: %s", *argv);
417 if (TAILQ_EMPTY(&fibl_head)) {
418 error = fiboptlist_csv("default", &fibl_head);
420 errx(EX_OSERR, "fiboptlist_csv failed.");
422 TAILQ_FOREACH(fl, &fibl_head, fl_next)
423 flushroutes_fib(fl->fl_num);
427 flushroutes_fib(int fib)
429 struct rt_msghdr *rtm;
431 char *buf, *next, *lim;
432 int mib[6], rlen, seqno, count = 0;
435 error = set_sofib(fib);
436 error += set_procfib(fib);
438 warn("fib number %d is ignored", fib);
445 mib[2] = 0; /* protocol */
446 mib[3] = 0; /* wildcard address family */
447 mib[4] = NET_RT_DUMP;
448 mib[5] = 0; /* no flags */
449 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
450 err(EX_OSERR, "route-sysctl-estimate");
451 if ((buf = malloc(needed)) == NULL)
452 errx(EX_OSERR, "malloc failed");
453 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
454 if (errno == ENOMEM && count++ < 10) {
455 warnx("Routing table grew, retrying");
460 err(EX_OSERR, "route-sysctl-get");
464 (void) printf("Examining routing table from sysctl\n");
466 for (next = buf; next < lim; next += rtm->rtm_msglen) {
467 rtm = (struct rt_msghdr *)next;
469 print_rtmsg(rtm, rtm->rtm_msglen);
470 if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
473 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
475 if (sa->sa_family != af)
480 rtm->rtm_type = RTM_DELETE;
481 rtm->rtm_seq = seqno;
482 rlen = write(s, next, rtm->rtm_msglen);
483 if (rlen < 0 && errno == EPERM)
484 err(1, "write to routing socket");
485 if (rlen < (int)rtm->rtm_msglen) {
486 warn("write to routing socket");
487 (void) printf("got only %d for rlen\n", rlen);
496 print_rtmsg(rtm, rlen);
498 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
500 printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
501 routename(sa) : netname(sa));
502 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa);
503 printf("%-20.20s ", routename(sa));
505 printf("-fib %-3d ", fib);
513 routename(struct sockaddr *sa)
516 static char line[MAXHOSTNAMELEN + 1];
518 static char domain[MAXHOSTNAMELEN + 1];
519 static int first = 1, n;
523 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
524 (cp = strchr(domain, '.'))) {
525 domain[MAXHOSTNAMELEN] = '\0';
526 (void) strcpy(domain, cp + 1);
532 strcpy(line, "default");
533 else switch (sa->sa_family) {
537 in = ((struct sockaddr_in *)sa)->sin_addr;
540 if (in.s_addr == INADDR_ANY || sa->sa_len < 4)
542 if (cp == NULL && !nflag) {
543 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
547 cptr = strchr(hp->h_name, '.');
549 strcmp(cptr + 1, domain) == 0)
555 strncpy(line, cp, sizeof(line) - 1);
556 line[sizeof(line) - 1] = '\0';
558 (void) sprintf(line, "%s", inet_ntoa(in));
565 struct sockaddr_in6 sin6; /* use static var for safety */
568 memset(&sin6, 0, sizeof(sin6));
569 memcpy(&sin6, sa, sa->sa_len);
570 sin6.sin6_len = sizeof(struct sockaddr_in6);
571 sin6.sin6_family = AF_INET6;
573 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
574 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
575 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) ||
576 IN6_IS_ADDR_MC_NODELOCAL(&sin6.sin6_addr)) &&
577 sin6.sin6_scope_id == 0) {
579 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
580 sin6.sin6_addr.s6_addr[2] = 0;
581 sin6.sin6_addr.s6_addr[3] = 0;
585 niflags |= NI_NUMERICHOST;
586 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
587 line, sizeof(line), NULL, 0, niflags) != 0)
588 strncpy(line, "invalid", sizeof(line));
595 (void) snprintf(line, sizeof(line), "atalk %s",
596 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
600 return (link_ntoa((struct sockaddr_dl *)sa));
604 u_short *sp = (u_short *)sa;
605 u_short *splim = sp + ((sa->sa_len + 1) >> 1);
606 char *cps = line + sprintf(line, "(%d)", sa->sa_family);
607 char *cpe = line + sizeof(line);
609 while (++sp < splim && cps < cpe) /* start with sa->sa_data */
610 if ((n = snprintf(cps, cpe - cps, " %x", *sp)) > 0)
621 * Return the name of the network whose address is given.
622 * The address is assumed to be that of a net or subnet, not a host.
625 netname(struct sockaddr *sa)
627 const char *cp = NULL;
628 static char line[MAXHOSTNAMELEN + 1];
629 struct netent *np = NULL;
634 switch (sa->sa_family) {
638 in = ((struct sockaddr_in *)sa)->sin_addr;
640 i = in.s_addr = ntohl(in.s_addr);
645 mask = IN_CLASSA_NET;
647 } else if (IN_CLASSB(i)) {
648 mask = IN_CLASSB_NET;
651 mask = IN_CLASSC_NET;
655 * If there are more bits than the standard mask
656 * would suggest, subnets must be in use.
657 * Guess at the subnet mask, assuming reasonable
658 * width subnet fields.
660 while (in.s_addr &~ mask)
661 mask = (long)mask >> subnetshift;
662 net = in.s_addr & mask;
663 while ((mask & 1) == 0)
664 mask >>= 1, net >>= 1;
665 np = getnetbyaddr(net, AF_INET);
669 #define C(x) (unsigned)((x) & 0xff)
671 strncpy(line, cp, sizeof(line));
672 else if ((in.s_addr & 0xffffff) == 0)
673 (void) sprintf(line, "%u", C(in.s_addr >> 24));
674 else if ((in.s_addr & 0xffff) == 0)
675 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24),
677 else if ((in.s_addr & 0xff) == 0)
678 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
679 C(in.s_addr >> 16), C(in.s_addr >> 8));
681 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
682 C(in.s_addr >> 16), C(in.s_addr >> 8),
691 struct sockaddr_in6 sin6; /* use static var for safety */
694 memset(&sin6, 0, sizeof(sin6));
695 memcpy(&sin6, sa, sa->sa_len);
696 sin6.sin6_len = sizeof(struct sockaddr_in6);
697 sin6.sin6_family = AF_INET6;
699 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
700 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
701 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) ||
702 IN6_IS_ADDR_MC_NODELOCAL(&sin6.sin6_addr)) &&
703 sin6.sin6_scope_id == 0) {
705 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
706 sin6.sin6_addr.s6_addr[2] = 0;
707 sin6.sin6_addr.s6_addr[3] = 0;
711 niflags |= NI_NUMERICHOST;
712 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
713 line, sizeof(line), NULL, 0, niflags) != 0)
714 strncpy(line, "invalid", sizeof(line));
721 (void) snprintf(line, sizeof(line), "atalk %s",
722 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
726 return (link_ntoa((struct sockaddr_dl *)sa));
731 u_short *sp = (u_short *)sa->sa_data;
732 u_short *splim = sp + ((sa->sa_len + 1)>>1);
733 char *cps = line + sprintf(line, "af %d:", sa->sa_family);
734 char *cpe = line + sizeof(line);
736 while (sp < splim && cps < cpe)
737 if ((n = snprintf(cps, cpe - cps, " %x", *sp++)) > 0)
748 set_metric(char *value, int key)
751 u_long noval, *valp = &noval;
754 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
755 caseof(K_MTU, RTV_MTU, rmx_mtu);
756 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
757 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
758 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
759 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
760 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
761 caseof(K_RTT, RTV_RTT, rmx_rtt);
762 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
763 caseof(K_WEIGHT, RTV_WEIGHT, rmx_weight);
766 if (lockrest || locking)
767 rt_metrics.rmx_locks |= flag;
773 #define F_ISHOST 0x01
774 #define F_FORCENET 0x02
775 #define F_FORCEHOST 0x04
777 #define F_INTERFACE 0x10
780 newroute(int argc, char **argv)
785 const char *dest, *gateway, *errmsg;
786 int key, error, flags, nrflags, fibnum;
789 errx(EX_NOPERM, "must be root to alter routing table");
797 TAILQ_INIT(&fibl_head);
800 if (*cmd != 'g' && *cmd != 's')
801 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
804 if (**(++argv)== '-') {
805 switch (key = keyword(1 + *argv)) {
808 aflen = sizeof(struct sockaddr_dl);
812 aflen = sizeof(struct sockaddr_in);
817 aflen = sizeof(struct sockaddr_in6);
822 aflen = sizeof(struct sockaddr_at);
826 aflen = sizeof(union sockunion);
830 nrflags |= F_INTERFACE;
833 flags &= ~RTF_STATIC;
842 nrflags |= F_FORCEHOST;
848 flags |= RTF_BLACKHOLE;
860 flags |= RTF_XRESOLVE;
869 flags &= ~RTF_STICKY;
874 error = fiboptlist_csv(*++argv, &fibl_head);
877 "invalid fib number: %s", *argv);
882 getaddr(RTA_IFA, *++argv, 0, nrflags);
887 getaddr(RTA_IFP, *++argv, 0, nrflags);
892 getaddr(RTA_GENMASK, *++argv, 0, nrflags);
897 getaddr(RTA_GATEWAY, *++argv, 0, nrflags);
903 if (getaddr(RTA_DST, *++argv, &hp, nrflags))
910 getaddr(RTA_NETMASK, *++argv, 0, nrflags);
913 nrflags |= F_FORCENET;
918 if (prefixlen(*++argv) == -1) {
919 nrflags &= ~F_FORCENET;
922 nrflags |= F_FORCENET;
923 nrflags &= ~F_ISHOST;
937 set_metric(*++argv, key);
943 if ((rtm_addrs & RTA_DST) == 0) {
945 if (getaddr(RTA_DST, *argv, &hp, nrflags))
947 } else if ((rtm_addrs & RTA_GATEWAY) == 0) {
949 getaddr(RTA_GATEWAY, *argv, &hp, nrflags);
951 getaddr(RTA_NETMASK, *argv, 0, nrflags);
952 nrflags |= F_FORCENET;
957 if (nrflags & F_FORCEHOST) {
960 if (af == AF_INET6) {
961 rtm_addrs &= ~RTA_NETMASK;
962 memset((void *)&so_mask, 0, sizeof(so_mask));
966 if (nrflags & F_FORCENET)
967 nrflags &= ~F_ISHOST;
969 if (nrflags & F_ISHOST)
971 if ((nrflags & F_INTERFACE) == 0)
972 flags |= RTF_GATEWAY;
973 if (nrflags & F_PROXY) {
974 so_dst.sinarp.sin_other = SIN_PROXY;
975 flags |= RTF_ANNOUNCE;
982 if (TAILQ_EMPTY(&fibl_head)) {
983 error = fiboptlist_csv("default", &fibl_head);
985 errx(EX_OSERR, "fiboptlist_csv failed.");
988 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
989 fl->fl_error = newroute_fib(fl->fl_num, cmd, flags);
991 fl->fl_errno = errno;
992 error += fl->fl_error;
994 if (*cmd == 'g' || *cmd == 's')
1000 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
1001 if (fl->fl_error == 0)
1007 printf("%s %s %s", cmd,
1008 (nrflags & F_ISHOST) ? "host" : "net", dest);
1010 printf(": gateway %s", gateway);
1013 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
1014 if (fl->fl_error == 0
1015 && fl->fl_num >= 0) {
1020 printf("%d", fl->fl_num);
1030 TAILQ_FOREACH(fl, &fibl_head, fl_next) {
1031 if (fl->fl_error != 0) {
1032 printf("%s %s %s", cmd, (nrflags & F_ISHOST)
1033 ? "host" : "net", dest);
1035 printf(": gateway %s", gateway);
1037 if (fl->fl_num >= 0)
1038 printf(" fib %d", fl->fl_num);
1040 switch (fl->fl_errno) {
1042 errmsg = "not in table";
1045 errmsg = "entry in use";
1048 errmsg = "not enough memory";
1052 * handle recursion avoidance
1055 errmsg = "gateway uses the same route";
1058 errmsg = "route already in table";
1061 errmsg = strerror(fl->fl_errno);
1064 printf(": %s\n", errmsg);
1073 newroute_fib(int fib, char *cmd, int flags)
1077 error = set_sofib(fib);
1079 warn("fib number %d is ignored", fib);
1083 error = rtmsg(*cmd, flags, fib);
1088 inet_makenetandmask(u_long net, struct sockaddr_in *sin, u_long bits)
1090 u_long addr, mask = 0;
1093 rtm_addrs |= RTA_NETMASK;
1095 * XXX: This approach unable to handle 0.0.0.1/32 correctly
1096 * as inet_network() converts 0.0.0.1 and 1 equally.
1099 addr = net << IN_CLASSA_NSHIFT;
1100 else if (net <= 0xffff)
1101 addr = net << IN_CLASSB_NSHIFT;
1102 else if (net <= 0xffffff)
1103 addr = net << IN_CLASSC_NSHIFT;
1107 * If no /xx was specified we must calculate the
1110 if ((bits == 0) && (addr != 0)) {
1112 for(i=0,j=0xff; i<4; i++) {
1118 /* i holds the first non zero bit */
1122 mask = 0xffffffff << (32 - bits);
1124 sin->sin_addr.s_addr = htonl(addr);
1126 sin->sin_addr.s_addr = htonl(mask);
1128 sin->sin_family = 0;
1129 cp = (char *)(&sin->sin_addr + 1);
1130 while (*--cp == 0 && cp > (char *)sin)
1132 sin->sin_len = 1 + cp - (char *)sin;
1137 * XXX the function may need more improvement...
1140 inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen)
1142 struct in6_addr in6;
1145 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
1146 sin6->sin6_scope_id == 0) {
1148 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
1149 /* aggregatable global unicast - RFC2374 */
1150 memset(&in6, 0, sizeof(in6));
1151 if (!memcmp(&sin6->sin6_addr.s6_addr[8],
1152 &in6.s6_addr[8], 8))
1157 if (plen == NULL || strcmp(plen, "128") == 0)
1159 rtm_addrs |= RTA_NETMASK;
1166 * Interpret an argument as a network address of some kind,
1167 * returning 1 if a host address, 0 if a network address.
1170 getaddr(int which, char *str, struct hostent **hpp, int nrflags)
1177 int afamily; /* local copy of af so we can change it */
1181 aflen = sizeof(struct sockaddr_in);
1191 if (nrflags & F_INTERFACE) {
1192 struct ifaddrs *ifap, *ifa;
1193 struct sockaddr_dl *sdl = NULL;
1195 if (getifaddrs(&ifap))
1196 err(1, "getifaddrs");
1198 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
1199 if (ifa->ifa_addr->sa_family != AF_LINK)
1202 if (strcmp(str, ifa->ifa_name) != 0)
1205 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
1207 /* If we found it, then use it */
1210 * Copy is safe since we have a
1211 * sockaddr_storage member in sockunion{}.
1212 * Note that we need to copy before calling
1215 memcpy(&su->sdl, sdl, sdl->sdl_len);
1236 usage("internal error");
1239 su->sa.sa_len = aflen;
1240 su->sa.sa_family = afamily; /* cases that don't want it have left already */
1241 if (strcmp(str, "default") == 0) {
1243 * Default is net 0.0.0.0/0
1249 bzero(su, sizeof(*su)); /* for readability */
1251 getaddr(RTA_NETMASK, str, 0, nrflags);
1256 bzero(su, sizeof(*su)); /* for readability */
1265 struct addrinfo hints, *res;
1269 if (which == RTA_DST && (q = strchr(str, '/')) != NULL)
1271 memset(&hints, 0, sizeof(hints));
1272 hints.ai_family = afamily; /*AF_INET6*/
1273 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1274 ecode = getaddrinfo(str, NULL, &hints, &res);
1275 if (ecode != 0 || res->ai_family != AF_INET6 ||
1276 res->ai_addrlen != sizeof(su->sin6)) {
1277 (void) fprintf(stderr, "%s: %s\n", str,
1278 gai_strerror(ecode));
1281 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6));
1283 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) ||
1284 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr) ||
1285 IN6_IS_ADDR_MC_NODELOCAL(&su->sin6.sin6_addr)) &&
1286 su->sin6.sin6_scope_id) {
1287 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] =
1288 htons(su->sin6.sin6_scope_id);
1289 su->sin6.sin6_scope_id = 0;
1295 if (which == RTA_DST)
1296 return (inet6_makenetandmask(&su->sin6, q));
1302 if (!atalk_aton(str, &su->sat.sat_addr))
1303 errx(EX_NOHOST, "bad address: %s", str);
1304 rtm_addrs |= RTA_NETMASK;
1305 return(forcehost || su->sat.sat_addr.s_node != 0);
1308 link_addr(str, &su->sdl);
1313 su->sa.sa_len = sizeof(*su);
1314 sockaddr(str, &su->sa);
1326 q = strchr(str,'/');
1327 if (q != NULL && which == RTA_DST) {
1329 if ((val = inet_network(str)) != INADDR_NONE) {
1330 inet_makenetandmask(
1331 val, &su->sin, strtoul(q+1, 0, 0));
1336 if ((which != RTA_DST || forcenet == 0) &&
1337 inet_aton(str, &su->sin.sin_addr)) {
1338 val = su->sin.sin_addr.s_addr;
1339 if (which != RTA_DST || forcehost ||
1340 inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
1347 if (which == RTA_DST && forcehost == 0 &&
1348 ((val = inet_network(str)) != INADDR_NONE ||
1349 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) {
1351 inet_makenetandmask(val, &su->sin, 0);
1354 hp = gethostbyname(str);
1357 su->sin.sin_family = hp->h_addrtype;
1358 memmove((char *)&su->sin.sin_addr, hp->h_addr,
1359 MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr)));
1362 errx(EX_NOHOST, "bad address: %s", str);
1366 prefixlen(const char *str)
1368 int len = atoi(str), q, r;
1372 rtm_addrs |= RTA_NETMASK;
1377 p = (char *)&so_mask.sin6.sin6_addr;
1382 p = (char *)&so_mask.sin.sin_addr;
1385 fprintf(stderr, "prefixlen not supported in this af\n");
1389 if (len < 0 || max < len) {
1390 fprintf(stderr, "%s: bad value\n", str);
1396 so_mask.sa.sa_family = af;
1397 so_mask.sa.sa_len = aflen;
1398 memset((void *)p, 0, max / 8);
1400 memset((void *)p, 0xff, q);
1402 *((u_char *)p + q) = (0xff00 >> r) & 0xff;
1414 char *buf, *lim, *next, count = 0;
1415 struct rt_msghdr *rtm;
1420 mib[2] = 0; /* protocol */
1421 mib[3] = 0; /* wildcard address family */
1422 mib[4] = NET_RT_IFLIST;
1423 mib[5] = 0; /* no flags */
1424 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
1425 err(EX_OSERR, "route-sysctl-estimate");
1426 if ((buf = malloc(needed)) == NULL)
1427 errx(EX_OSERR, "malloc failed");
1428 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
1429 if (errno == ENOMEM && count++ < 10) {
1430 warnx("Routing table grew, retrying");
1435 err(EX_OSERR, "actual retrieval of interface table");
1438 for (next = buf; next < lim; next += rtm->rtm_msglen) {
1439 rtm = (struct rt_msghdr *)next;
1440 print_rtmsg(rtm, rtm->rtm_msglen);
1445 monitor(int argc, char *argv[])
1448 char msg[2048], *endptr;
1456 switch (keyword(*argv + 1)) {
1461 fib = strtol(*++argv, &endptr, 0);
1463 if (*endptr != '\0' ||
1465 (numfibs != -1 && fib > numfibs - 1))
1469 errx(EX_USAGE, "invalid fib number: %s", *argv);
1475 error = set_sofib(fib);
1477 errx(EX_USAGE, "invalid fib number: %d", fib);
1486 n = read(s, msg, 2048);
1488 (void) printf("\ngot message of size %d on %s", n, ctime(&now));
1489 print_rtmsg((struct rt_msghdr *)msg, n);
1494 struct rt_msghdr m_rtm;
1499 rtmsg(int cmd, int flags, int fib)
1503 char *cp = m_rtmsg.m_space;
1506 #define NEXTADDR(w, u) \
1507 if (rtm_addrs & (w)) {\
1508 l = SA_SIZE(&(u.sa)); memmove(cp, &(u), l); cp += l;\
1509 if (verbose) sodump(&(u),#u);\
1513 memset(&m_rtmsg, 0, sizeof(m_rtmsg));
1516 else if (cmd == 'c')
1518 else if (cmd == 'g' || cmd == 's') {
1520 if (so_ifp.sa.sa_family == 0) {
1521 so_ifp.sa.sa_family = AF_LINK;
1522 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
1523 rtm_addrs |= RTA_IFP;
1527 #define rtm m_rtmsg.m_rtm
1529 rtm.rtm_flags = flags;
1530 rtm.rtm_version = RTM_VERSION;
1531 rtm.rtm_seq = ++seq;
1532 rtm.rtm_addrs = rtm_addrs;
1533 rtm.rtm_rmx = rt_metrics;
1534 rtm.rtm_inits = rtm_inits;
1536 if (rtm_addrs & RTA_NETMASK)
1538 NEXTADDR(RTA_DST, so_dst);
1539 NEXTADDR(RTA_GATEWAY, so_gate);
1540 NEXTADDR(RTA_NETMASK, so_mask);
1541 NEXTADDR(RTA_GENMASK, so_genmask);
1542 NEXTADDR(RTA_IFP, so_ifp);
1543 NEXTADDR(RTA_IFA, so_ifa);
1544 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
1546 print_rtmsg(&rtm, l);
1549 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
1551 err(1, "writing to routing socket");
1552 warn("writing to routing socket");
1555 if (cmd == RTM_GET) {
1557 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
1558 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
1560 warn("read from routing socket");
1562 print_getmsg(&rtm, l, fib);
1571 int olen = so_mask.sa.sa_len;
1572 char *cp1 = olen + (char *)&so_mask, *cp2;
1574 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; )
1576 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask;
1579 if ((rtm_addrs & RTA_DST) == 0)
1581 switch (so_dst.sa.sa_family) {
1590 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst;
1591 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst;
1594 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask;
1595 while (cp1 > so_dst.sa.sa_data)
1599 const char *msgtypes[] = {
1601 "RTM_ADD: Add Route",
1602 "RTM_DELETE: Delete Route",
1603 "RTM_CHANGE: Change Metrics or flags",
1604 "RTM_GET: Report Metrics",
1605 "RTM_LOSING: Kernel Suspects Partitioning",
1606 "RTM_REDIRECT: Told to use different route",
1607 "RTM_MISS: Lookup failed on this address",
1608 "RTM_LOCK: fix specified metrics",
1609 "RTM_OLDADD: caused by SIOCADDRT",
1610 "RTM_OLDDEL: caused by SIOCDELRT",
1611 "RTM_RESOLVE: Route created by cloning",
1612 "RTM_NEWADDR: address being added to iface",
1613 "RTM_DELADDR: address being removed from iface",
1614 "RTM_IFINFO: iface status change",
1615 "RTM_NEWMADDR: new multicast group membership on iface",
1616 "RTM_DELMADDR: multicast group membership removed from iface",
1617 "RTM_IFANNOUNCE: interface arrival/departure",
1618 "RTM_IEEE80211: IEEE 802.11 wireless event",
1621 char metricnames[] =
1622 "\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire"
1625 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE"
1626 "\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE"
1627 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3"
1628 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY";
1630 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1631 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1632 "\017LINK2\020MULTICAST";
1634 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
1636 static const char errfmt[] =
1637 "\n%s: truncated route message, only %zu bytes left\n";
1640 print_rtmsg(struct rt_msghdr *rtm, size_t msglen)
1642 struct if_msghdr *ifm;
1643 struct ifa_msghdr *ifam;
1645 struct ifma_msghdr *ifmam;
1647 struct if_announcemsghdr *ifan;
1652 if (rtm->rtm_version != RTM_VERSION) {
1653 (void) printf("routing message version %d not understood\n",
1657 if (rtm->rtm_type < sizeof(msgtypes) / sizeof(msgtypes[0]))
1658 (void)printf("%s: ", msgtypes[rtm->rtm_type]);
1660 (void)printf("unknown type %d: ", rtm->rtm_type);
1661 (void)printf("len %d, ", rtm->rtm_msglen);
1663 #define REQUIRE(x) do { \
1664 if (msglen < sizeof(x)) \
1667 msglen -= sizeof(x); \
1670 switch (rtm->rtm_type) {
1672 REQUIRE(struct if_msghdr);
1673 ifm = (struct if_msghdr *)rtm;
1674 (void) printf("if# %d, ", ifm->ifm_index);
1675 switch (ifm->ifm_data.ifi_link_state) {
1676 case LINK_STATE_DOWN:
1686 (void) printf("link: %s, flags:", state);
1687 bprintf(stdout, ifm->ifm_flags, ifnetflags);
1688 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs, msglen);
1692 REQUIRE(struct ifa_msghdr);
1693 ifam = (struct ifa_msghdr *)rtm;
1694 (void) printf("metric %d, flags:", ifam->ifam_metric);
1695 bprintf(stdout, ifam->ifam_flags, routeflags);
1696 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs, msglen);
1701 REQUIRE(struct ifma_msghdr);
1702 ifmam = (struct ifma_msghdr *)rtm;
1703 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs, msglen);
1706 case RTM_IFANNOUNCE:
1707 REQUIRE(struct if_announcemsghdr);
1708 ifan = (struct if_announcemsghdr *)rtm;
1709 (void) printf("if# %d, what: ", ifan->ifan_index);
1710 switch (ifan->ifan_what) {
1714 case IFAN_DEPARTURE:
1715 printf("departure");
1718 printf("#%d", ifan->ifan_what);
1726 (void) printf("pid: %ld, seq %d, errno %d, flags:",
1727 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1728 bprintf(stdout, rtm->rtm_flags, routeflags);
1729 pmsg_common(rtm, msglen);
1735 (void)printf(errfmt, __func__, msglen);
1740 print_getmsg(struct rt_msghdr *rtm, int msglen, int fib)
1742 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
1743 struct sockaddr_dl *ifp = NULL;
1744 struct sockaddr *sa;
1748 (void) printf(" route to: %s\n",
1749 routename((struct sockaddr *)&so_dst));
1750 if (rtm->rtm_version != RTM_VERSION) {
1751 warnx("routing message version %d not understood",
1755 if (rtm->rtm_msglen > msglen) {
1756 warnx("message length mismatch, in packet %d, returned %d",
1757 rtm->rtm_msglen, msglen);
1759 if (rtm->rtm_errno) {
1760 errno = rtm->rtm_errno;
1761 warn("message indicates error %d", errno);
1764 cp = ((char *)(rtm + 1));
1766 for (i = 1; i; i <<= 1)
1767 if (i & rtm->rtm_addrs) {
1768 sa = (struct sockaddr *)cp;
1780 if (sa->sa_family == AF_LINK &&
1781 ((struct sockaddr_dl *)sa)->sdl_nlen)
1782 ifp = (struct sockaddr_dl *)sa;
1788 mask->sa_family = dst->sa_family; /* XXX */
1790 (void)printf("destination: %s\n", routename(dst));
1792 int savenflag = nflag;
1795 (void)printf(" mask: %s\n", routename(mask));
1798 if (gate && rtm->rtm_flags & RTF_GATEWAY)
1799 (void)printf(" gateway: %s\n", routename(gate));
1801 (void)printf(" fib: %u\n", (unsigned int)fib);
1803 (void)printf(" interface: %.*s\n",
1804 ifp->sdl_nlen, ifp->sdl_data);
1805 (void)printf(" flags: ");
1806 bprintf(stdout, rtm->rtm_flags, routeflags);
1808 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1809 #define msec(u) (((u) + 500) / 1000) /* usec to msec */
1811 (void) printf("\n%s\n", "\
1812 recvpipe sendpipe ssthresh rtt,msec mtu weight expire");
1813 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1814 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1815 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1816 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1817 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
1818 printf("%8ld%c ", rtm->rtm_rmx.rmx_weight, lock(WEIGHT));
1819 if (rtm->rtm_rmx.rmx_expire)
1820 rtm->rtm_rmx.rmx_expire -= time(0);
1821 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
1824 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
1826 pmsg_common(rtm, msglen);
1827 else if (rtm->rtm_addrs &~ RTA_IGN) {
1828 (void) printf("sockaddrs: ");
1829 bprintf(stdout, rtm->rtm_addrs, addrnames);
1836 pmsg_common(struct rt_msghdr *rtm, size_t msglen)
1838 (void) printf("\nlocks: ");
1839 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
1840 (void) printf(" inits: ");
1841 bprintf(stdout, rtm->rtm_inits, metricnames);
1842 if (msglen > sizeof(struct rt_msghdr))
1843 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs,
1844 msglen - sizeof(struct rt_msghdr));
1846 (void) fflush(stdout);
1850 pmsg_addrs(char *cp, int addrs, size_t len)
1852 struct sockaddr *sa;
1856 (void) putchar('\n');
1859 (void) printf("\nsockaddrs: ");
1860 bprintf(stdout, addrs, addrnames);
1861 (void) putchar('\n');
1862 for (i = 1; i != 0; i <<= 1)
1864 sa = (struct sockaddr *)cp;
1865 if (len == 0 || len < SA_SIZE(sa)) {
1866 (void) printf(errfmt, __func__, len);
1869 (void) printf(" %s", routename(sa));
1873 (void) putchar('\n');
1874 (void) fflush(stdout);
1878 bprintf(FILE *fp, int b, u_char *str)
1885 while ((i = *str++) != 0) {
1886 if (b & (1 << (i-1))) {
1893 for (; (i = *str) > 32; str++)
1900 (void) putc('>', fp);
1904 keyword(const char *cp)
1906 struct keytab *kt = keywords;
1908 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0)
1914 sodump(sup su, const char *which)
1916 switch (su->sa.sa_family) {
1918 (void) printf("%s: link %s; ",
1919 which, link_ntoa(&su->sdl));
1922 (void) printf("%s: inet %s; ",
1923 which, inet_ntoa(su->sin.sin_addr));
1926 (void) printf("%s: atalk %s; ",
1927 which, atalk_ntoa(su->sat.sat_addr));
1930 (void) fflush(stdout);
1943 sockaddr(char *addr, struct sockaddr *sa)
1945 char *cp = (char *)sa;
1946 int size = sa->sa_len;
1947 char *cplim = cp + size;
1948 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
1950 memset(cp, 0, size);
1953 if ((*addr >= '0') && (*addr <= '9')) {
1955 } else if ((*addr >= 'a') && (*addr <= 'f')) {
1956 new = *addr - 'a' + 10;
1957 } else if ((*addr >= 'A') && (*addr <= 'F')) {
1958 new = *addr - 'A' + 10;
1959 } else if (*addr == '\0')
1964 switch (state /* | INPUT */) {
1965 case GOTTWO | DIGIT:
1966 *cp++ = byte; /*FALLTHROUGH*/
1967 case VIRGIN | DIGIT:
1968 state = GOTONE; byte = new; continue;
1969 case GOTONE | DIGIT:
1970 state = GOTTWO; byte = new + (byte << 4); continue;
1971 default: /* | DELIM */
1972 state = VIRGIN; *cp++ = byte; byte = 0; continue;
1975 *cp++ = byte; /* FALLTHROUGH */
1980 } while (cp < cplim);
1981 sa->sa_len = cp - (char *)sa;
1985 atalk_aton(const char *text, struct at_addr *addr)
1989 if (sscanf(text, "%u.%u", &net, &node) != 2
1990 || net > 0xffff || node > 0xff)
1992 addr->s_net = htons(net);
1993 addr->s_node = node;
1998 atalk_ntoa(struct at_addr at)
2000 static char buf[20];
2002 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);