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Make "route add 0.0.0.0/X <gw>" where X > 0 work again.
[dragonfly.git] / sbin / route / route.c
CommitLineData
984263bc
MD		 1/*
2 * Copyright (c) 1983, 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
1de703da
MD		 32 *
33 * @(#) Copyright (c) 1983, 1989, 1991, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)route.c 8.6 (Berkeley) 4/28/95
35 * $FreeBSD: src/sbin/route/route.c,v 1.40.2.11 2003/02/27 23:10:10 ru Exp $
9b42cabe 36 * $DragonFly: src/sbin/route/route.c,v 1.17 2008/07/07 22:02:09 nant Exp $
984263bc
MD		 37 */
38
984263bc
MD		 39#include <sys/param.h>
40#include <sys/file.h>
41#include <sys/socket.h>
42#include <sys/ioctl.h>
43#include <sys/sysctl.h>
44#include <sys/types.h>
45
46#include <net/if.h>
47#include <net/route.h>
48#include <net/if_dl.h>
49#include <netinet/in.h>
50#include <netinet/if_ether.h>
51#include <netatalk/at.h>
52#ifdef NS
53#include <netns/ns.h>
54#endif
55#include <arpa/inet.h>
56#include <netdb.h>
57
9b42cabe
NA		 58#include <netproto/mpls/mpls.h>
59
984263bc
MD		 60#include <ctype.h>
61#include <err.h>
62#include <errno.h>
63#include <paths.h>
64#include <stdio.h>
65#include <stdlib.h>
66#include <string.h>
67#include <sysexits.h>
68#include <unistd.h>
69#include <ifaddrs.h>
70
147a7be0 71#include "extern.h"
984263bc 72#include "keywords.h"
984263bc 73
984263bc
MD		 74union sockunion {
75 struct sockaddr sa;
76 struct sockaddr_in sin;
77#ifdef INET6
78 struct sockaddr_in6 sin6;
79#endif
80 struct sockaddr_at sat;
81#ifdef NS
82 struct sockaddr_ns sns;
83#endif
9b42cabe 84 struct sockaddr_mpls smpls;
984263bc
MD		 85 struct sockaddr_dl sdl;
86 struct sockaddr_inarp sinarp;
87 struct sockaddr_storage ss; /* added to avoid memory overrun */
9b42cabe
NA		 88} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp, so_mpls1,
89 so_mpls2, so_mpls3;
984263bc
MD		 90
91typedef union sockunion *sup;
147a7be0 92
5af3bab0 93int nflag, wflag;
b06a5e2a 94int cpuflag = -1;
5af3bab0
CP		 95
96static struct ortentry route;
97static struct rt_metrics rt_metrics;
98static int pid, rtm_addrs;
99static int s;
100static int forcehost, forcenet, af, qflag, tflag;
101static int iflag, verbose, aflen = sizeof(struct sockaddr_in);
102static int locking, lockrest, debugonly;
9b42cabe 103static int mplsop, popcount, pushcount, swapcount;
5af3bab0
CP		 104static u_long rtm_inits;
105static uid_t uid;
106#ifdef NS
107static short ns_bh[] = {-1,-1,-1};
984263bc 108#endif
984263bc 109
5af3bab0
CP		 110static int atalk_aton(const char *, struct at_addr *);
111static char *atalk_ntoa(struct at_addr);
112static void flushroutes(int, char **);
113static void set_metric(char *, int);
114static void newroute(int, char **);
115static void inet_makenetandmask(u_long, struct sockaddr_in *, u_long);
116static void interfaces(void);
117static void monitor(void);
118static void sockaddr(char *, struct sockaddr *);
119static void sodump(sup, const char *);
120static void bprintf(FILE *, int, u_char *);
121static void print_getmsg(struct rt_msghdr *, int);
122static void print_rtmsg(struct rt_msghdr *, int);
123static void pmsg_common(struct rt_msghdr *);
124static void pmsg_addrs(char *, int);
125static void mask_addr(void);
126static int getaddr(int, char *, struct hostent **);
127static int rtmsg(int, int);
128static int prefixlen(const char *);
129#ifdef INET6
130static int inet6_makenetandmask(struct sockaddr_in6 *, const char *);
131#endif
984263bc
MD		 132
133void
b5744197 134usage(const char *cp)
984263bc 135{
bc82d1bc 136 if (cp != NULL)
984263bc 137 warnx("bad keyword: %s", cp);
147a7be0 138 fprintf(stderr, "usage: route [-dnqtv] command [[modifiers] args]\n");
984263bc
MD		 139 exit(EX_USAGE);
140 /* NOTREACHED */
141}
142
143#define ROUNDUP(a) \
144 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
145#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
146
147int
b5744197 148main(int argc, char **argv)
984263bc
MD		 149{
150 int ch;
151
152 if (argc < 2)
153 usage((char *)NULL);
154
b06a5e2a 155 while ((ch = getopt(argc, argv, "c:wnqdtv")) != -1)
984263bc 156 switch(ch) {
b06a5e2a
MD		 157 case 'c':
158 cpuflag = strtol(optarg, NULL, 0);
159 break;
9ddb32ba
MD		 160 case 'w':
161 wflag = 1;
162 break;
984263bc
MD		 163 case 'n':
164 nflag = 1;
165 break;
166 case 'q':
167 qflag = 1;
168 break;
169 case 'v':
170 verbose = 1;
171 break;
172 case 't':
173 tflag = 1;
174 break;
175 case 'd':
176 debugonly = 1;
177 break;
178 case '?':
179 default:
180 usage((char *)NULL);
181 }
182 argc -= optind;
183 argv += optind;
184
185 pid = getpid();
186 uid = geteuid();
187 if (tflag)
188 s = open(_PATH_DEVNULL, O_WRONLY, 0);
189 else
190 s = socket(PF_ROUTE, SOCK_RAW, 0);
191 if (s < 0)
192 err(EX_OSERR, "socket");
bc82d1bc 193 if (*argv != NULL)
984263bc
MD		 194 switch (keyword(*argv)) {
195 case K_GET:
196 uid = 0;
197 /* FALLTHROUGH */
198
199 case K_CHANGE:
200 case K_ADD:
201 case K_DELETE:
202 newroute(argc, argv);
203 /* NOTREACHED */
204
147a7be0
MD		 205 case K_SHOW:
206 show(argc, argv);
207 return(0);
208
984263bc
MD		 209 case K_MONITOR:
210 monitor();
211 /* NOTREACHED */
212
213 case K_FLUSH:
214 flushroutes(argc, argv);
215 exit(0);
216 /* NOTREACHED */
217 }
218 usage(*argv);
219 /* NOTREACHED */
220}
221
222/*
223 * Purge all entries in the routing tables not
224 * associated with network interfaces.
225 */
5af3bab0 226static void
b5744197 227flushroutes(int argc, char **argv)
984263bc
MD		 228{
229 size_t needed;
b06a5e2a
MD		 230 int mib[7], rlen, seqno;
231 int miblen;
984263bc 232 char *buf, *next, *lim;
147a7be0 233 struct rt_msghdr *rtm;
984263bc 234
bc82d1bc 235 if (uid != 0) {
984263bc
MD		 236 errx(EX_NOPERM, "must be root to alter routing table");
237 }
e70afae7 238 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
984263bc
MD		 239 if (argc > 1) {
240 argv++;
241 if (argc == 2 && **argv == '-')
242 switch (keyword(*argv + 1)) {
243 case K_INET:
244 af = AF_INET;
245 break;
246#ifdef INET6
247 case K_INET6:
248 af = AF_INET6;
249 break;
250#endif
251 case K_ATALK:
252 af = AF_APPLETALK;
253 break;
254#ifdef NS
255 case K_XNS:
256 af = AF_NS;
257 break;
258#endif
259 case K_LINK:
260 af = AF_LINK;
261 break;
9b42cabe
NA		 262 case K_MPLS:
263 af = AF_MPLS;
264 break;
984263bc
MD		 265 default:
266 goto bad;
267 } else
268bad: usage(*argv);
269 }
270 mib[0] = CTL_NET;
271 mib[1] = PF_ROUTE;
272 mib[2] = 0; /* protocol */
273 mib[3] = 0; /* wildcard address family */
274 mib[4] = NET_RT_DUMP;
275 mib[5] = 0; /* no flags */
b06a5e2a
MD		 276 if (cpuflag >= 0) {
277 mib[6] = cpuflag;
278 miblen = 7;
279 } else {
280 miblen = 6;
281 }
282 if (sysctl(mib, miblen, NULL, &needed, NULL, 0) < 0)
984263bc
MD		 283 err(EX_OSERR, "route-sysctl-estimate");
284 if ((buf = malloc(needed)) == NULL)
285 errx(EX_OSERR, "malloc failed");
b06a5e2a 286 if (sysctl(mib, miblen, buf, &needed, NULL, 0) < 0)
984263bc
MD		 287 err(EX_OSERR, "route-sysctl-get");
288 lim = buf + needed;
289 if (verbose)
147a7be0 290 printf("Examining routing table from sysctl\n");
984263bc
MD		 291 seqno = 0; /* ??? */
292 for (next = buf; next < lim; next += rtm->rtm_msglen) {
293 rtm = (struct rt_msghdr *)next;
294 if (verbose)
295 print_rtmsg(rtm, rtm->rtm_msglen);
296 if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
297 continue;
bc82d1bc 298 if (af != 0) {
984263bc
MD		 299 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
300
301 if (sa->sa_family != af)
302 continue;
303 }
304 if (debugonly)
305 continue;
306 rtm->rtm_type = RTM_DELETE;
307 rtm->rtm_seq = seqno;
308 rlen = write(s, next, rtm->rtm_msglen);
309 if (rlen < (int)rtm->rtm_msglen) {
310 warn("write to routing socket");
147a7be0 311 printf("got only %d for rlen\n", rlen);
984263bc
MD		 312 break;
313 }
314 seqno++;
315 if (qflag)
316 continue;
9ddb32ba 317 if (verbose) {
984263bc 318 print_rtmsg(rtm, rlen);
9ddb32ba 319 } else {
984263bc 320 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
9ddb32ba
MD		 321 if (wflag) {
322 printf("%-20s ", rtm->rtm_flags & RTF_HOST ?
323 routename(sa) : netname(sa));
324 } else {
325 printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
326 routename(sa) : netname(sa));
327 }
147a7be0
MD		 328 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) +
329 (char *)sa);
9ddb32ba
MD		 330 if (wflag) {
331 printf("%-20s ", routename(sa));
332 } else {
333 printf("%-20.20s ", routename(sa));
334 }
147a7be0 335 printf("done\n");
984263bc
MD		 336 }
337 }
338}
339
147a7be0 340char *
b5744197 341routename(struct sockaddr *sa)
984263bc 342{
5af3bab0 343 const char *cp;
984263bc
MD		 344 static char line[MAXHOSTNAMELEN + 1];
345 struct hostent *hp;
346 static char domain[MAXHOSTNAMELEN + 1];
347 static int first = 1;
984263bc
MD		 348
349 if (first) {
350 first = 0;
351 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
352 (cp = strchr(domain, '.'))) {
353 domain[MAXHOSTNAMELEN] = '\0';
147a7be0 354 strcpy(domain, cp + 1);
984263bc
MD		 355 } else
356 domain[0] = 0;
357 }
358
359 if (sa->sa_len == 0)
360 strcpy(line, "default");
361 else switch (sa->sa_family) {
362
363 case AF_INET:
364 { struct in_addr in;
365 in = ((struct sockaddr_in *)sa)->sin_addr;
366
bc82d1bc 367 cp = NULL;
984263bc
MD		 368 if (in.s_addr == INADDR_ANY || sa->sa_len < 4)
369 cp = "default";
bc82d1bc 370 if (cp == NULL && !nflag) {
15b85273 371 hp = gethostbyaddr(&in, sizeof(struct in_addr),
984263bc 372 AF_INET);
bc82d1bc 373 if (hp != NULL) {
5af3bab0
CP		 374 char *cptr;
375 cptr = strchr(hp->h_name, '.');
376 if (cptr != NULL && !wflag &&
377 strcmp(cptr + 1, domain) == 0)
378 *cptr = '\0';
984263bc
MD		 379 cp = hp->h_name;
380 }
381 }
bc82d1bc 382 if (cp != NULL) {
984263bc
MD		 383 strncpy(line, cp, sizeof(line) - 1);
384 line[sizeof(line) - 1] = '\0';
385 } else
147a7be0 386 sprintf(line, "%s", inet_ntoa(in));
984263bc
MD		 387 break;
388 }
389
390#ifdef INET6
391 case AF_INET6:
392 {
393 struct sockaddr_in6 sin6; /* use static var for safety */
394 int niflags = 0;
395#ifdef NI_WITHSCOPEID
396 niflags = NI_WITHSCOPEID;
397#endif
398
399 memset(&sin6, 0, sizeof(sin6));
400 memcpy(&sin6, sa, sa->sa_len);
401 sin6.sin6_len = sizeof(struct sockaddr_in6);
402 sin6.sin6_family = AF_INET6;
403#ifdef __KAME__
404 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
405 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
406 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
407 sin6.sin6_scope_id == 0) {
408 sin6.sin6_scope_id =
409 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
410 sin6.sin6_addr.s6_addr[2] = 0;
411 sin6.sin6_addr.s6_addr[3] = 0;
412 }
413#endif
414 if (nflag)
415 niflags |= NI_NUMERICHOST;
416 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
417 line, sizeof(line), NULL, 0, niflags) != 0)
418 strncpy(line, "invalid", sizeof(line));
419
420 return(line);
421 }
422#endif
423
424 case AF_APPLETALK:
147a7be0 425 snprintf(line, sizeof(line), "atalk %s",
984263bc
MD		 426 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
427 break;
428
429#ifdef NS
430 case AF_NS:
147a7be0 431 return(ns_print((struct sockaddr_ns *)sa));
984263bc
MD		 432#endif
433
434 case AF_LINK:
147a7be0 435 return(link_ntoa((struct sockaddr_dl *)sa));
984263bc
MD		 436
437 default:
00e3c552
CP		 438 {
439 /*
440 * Unknown address family; just render the raw
441 * data in sa->sa_data as hex values.
442 */
fd07f7dc
CP		 443 uint8_t *sp = (uint8_t *)sa->sa_data;
444 uint8_t *splim = (uint8_t *)sa + sa->sa_len;
5af3bab0 445 char *cps = line + sprintf(line, "(%d)", sa->sa_family);
984263bc
MD		 446 char *cpe = line + sizeof(line);
447
00e3c552 448 while (sp < splim && cps < cpe)
fd28efc5 449 cps += snprintf(cps, cpe - cps, " %02x", *sp++);
984263bc
MD		 450 break;
451 }
452 }
147a7be0 453 return(line);
984263bc
MD		 454}
455
456/*
457 * Return the name of the network whose address is given.
458 * The address is assumed to be that of a net or subnet, not a host.
459 */
147a7be0 460char *
b5744197 461netname(struct sockaddr *sa)
984263bc 462{
5af3bab0 463 const char *cp = 0;
984263bc
MD		 464 static char line[MAXHOSTNAMELEN + 1];
465 struct netent *np = 0;
466 u_long net, mask;
147a7be0 467 u_long i;
984263bc 468 int subnetshift;
984263bc
MD		 469
470 switch (sa->sa_family) {
471
472 case AF_INET:
473 { struct in_addr in;
474 in = ((struct sockaddr_in *)sa)->sin_addr;
475
476 i = in.s_addr = ntohl(in.s_addr);
477 if (in.s_addr == 0)
478 cp = "default";
479 else if (!nflag) {
480 if (IN_CLASSA(i)) {
481 mask = IN_CLASSA_NET;
482 subnetshift = 8;
483 } else if (IN_CLASSB(i)) {
484 mask = IN_CLASSB_NET;
485 subnetshift = 8;
486 } else {
487 mask = IN_CLASSC_NET;
488 subnetshift = 4;
489 }
490 /*
491 * If there are more bits than the standard mask
492 * would suggest, subnets must be in use.
493 * Guess at the subnet mask, assuming reasonable
494 * width subnet fields.
495 */
496 while (in.s_addr &~ mask)
497 mask = (long)mask >> subnetshift;
498 net = in.s_addr & mask;
499 while ((mask & 1) == 0)
500 mask >>= 1, net >>= 1;
501 np = getnetbyaddr(net, AF_INET);
bc82d1bc 502 if (np != NULL)
984263bc
MD		 503 cp = np->n_name;
504 }
505#define C(x) (unsigned)((x) & 0xff)
bc82d1bc 506 if (cp != NULL)
984263bc
MD		 507 strncpy(line, cp, sizeof(line));
508 else if ((in.s_addr & 0xffffff) == 0)
147a7be0 509 sprintf(line, "%u", C(in.s_addr >> 24));
984263bc 510 else if ((in.s_addr & 0xffff) == 0)
147a7be0 511 sprintf(line, "%u.%u", C(in.s_addr >> 24),
984263bc
MD		 512 C(in.s_addr >> 16));
513 else if ((in.s_addr & 0xff) == 0)
147a7be0 514 sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
984263bc
MD		 515 C(in.s_addr >> 16), C(in.s_addr >> 8));
516 else
147a7be0 517 sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
984263bc
MD		 518 C(in.s_addr >> 16), C(in.s_addr >> 8),
519 C(in.s_addr));
520#undef C
521 break;
522 }
523
524#ifdef INET6
525 case AF_INET6:
526 {
527 struct sockaddr_in6 sin6; /* use static var for safety */
528 int niflags = 0;
529#ifdef NI_WITHSCOPEID
530 niflags = NI_WITHSCOPEID;
531#endif
532
533 memset(&sin6, 0, sizeof(sin6));
534 memcpy(&sin6, sa, sa->sa_len);
535 sin6.sin6_len = sizeof(struct sockaddr_in6);
536 sin6.sin6_family = AF_INET6;
537#ifdef __KAME__
538 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
539 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
540 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
541 sin6.sin6_scope_id == 0) {
542 sin6.sin6_scope_id =
543 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
544 sin6.sin6_addr.s6_addr[2] = 0;
545 sin6.sin6_addr.s6_addr[3] = 0;
546 }
547#endif
548 if (nflag)
549 niflags |= NI_NUMERICHOST;
550 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
551 line, sizeof(line), NULL, 0, niflags) != 0)
552 strncpy(line, "invalid", sizeof(line));
553
554 return(line);
555 }
556#endif
557
558 case AF_APPLETALK:
147a7be0 559 snprintf(line, sizeof(line), "atalk %s",
984263bc
MD		 560 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
561 break;
562
563#ifdef NS
564 case AF_NS:
147a7be0 565 return(ns_print((struct sockaddr_ns *)sa));
984263bc
MD		 566 break;
567#endif
568
569 case AF_LINK:
147a7be0 570 return(link_ntoa((struct sockaddr_dl *)sa));
984263bc
MD		 571
572
573 default:
00e3c552
CP		 574 {
575 /*
576 * Unknown address family; just render the raw
577 * data in sa->sa_data as hex values.
578 */
fd07f7dc
CP		 579 uint8_t *sp = (uint8_t *)sa->sa_data;
580 uint8_t *splim = (uint8_t *)sa + sa->sa_len;
5af3bab0 581 char *cps = line + sprintf(line, "af %d:", sa->sa_family);
984263bc
MD		 582 char *cpe = line + sizeof(line);
583
5af3bab0 584 while (sp < splim && cps < cpe)
fd28efc5 585 cps += snprintf(cps, cpe - cps, " %02x", *sp++);
984263bc
MD		 586 break;
587 }
588 }
147a7be0 589 return(line);
984263bc
MD		 590}
591
5af3bab0 592static void
b5744197 593set_metric(char *value, int key)
984263bc
MD		 594{
595 int flag = 0;
596 u_long noval, *valp = &noval;
597
598 switch (key) {
599#define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
600 caseof(K_MTU, RTV_MTU, rmx_mtu);
601 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
602 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
603 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
604 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
605 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
606 caseof(K_RTT, RTV_RTT, rmx_rtt);
607 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
608 }
609 rtm_inits |= flag;
610 if (lockrest || locking)
611 rt_metrics.rmx_locks |= flag;
612 if (locking)
613 locking = 0;
614 *valp = atoi(value);
615}
616
5af3bab0 617static void
b5744197 618newroute(int argc, char **argv)
984263bc 619{
5af3bab0
CP		 620 char *cmd;
621 const char *err_str, *dest = "", *gateway = "";
984263bc
MD		 622 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC;
623 int key;
624 struct hostent *hp = 0;
625
bc82d1bc 626 if (uid != 0) {
984263bc
MD		 627 errx(EX_NOPERM, "must be root to alter routing table");
628 }
629 cmd = argv[0];
630 if (*cmd != 'g')
e70afae7 631 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
984263bc
MD		 632 while (--argc > 0) {
633 if (**(++argv)== '-') {
634 switch (key = keyword(1 + *argv)) {
635 case K_LINK:
636 af = AF_LINK;
637 aflen = sizeof(struct sockaddr_dl);
638 break;
639 case K_INET:
640 af = AF_INET;
641 aflen = sizeof(struct sockaddr_in);
642 break;
643#ifdef INET6
644 case K_INET6:
645 af = AF_INET6;
646 aflen = sizeof(struct sockaddr_in6);
647 break;
648#endif
649 case K_ATALK:
650 af = AF_APPLETALK;
651 aflen = sizeof(struct sockaddr_at);
652 break;
653 case K_SA:
654 af = PF_ROUTE;
655 aflen = sizeof(union sockunion);
656 break;
657#ifdef NS
658 case K_XNS:
659 af = AF_NS;
660 aflen = sizeof(struct sockaddr_ns);
661 break;
662#endif
663 case K_IFACE:
664 case K_INTERFACE:
665 iflag++;
666 break;
667 case K_NOSTATIC:
668 flags &= ~RTF_STATIC;
669 break;
670 case K_LLINFO:
671 flags |= RTF_LLINFO;
672 break;
673 case K_LOCK:
674 locking = 1;
675 break;
676 case K_LOCKREST:
677 lockrest = 1;
678 break;
679 case K_HOST:
680 forcehost++;
681 break;
682 case K_REJECT:
683 flags |= RTF_REJECT;
684 break;
685 case K_BLACKHOLE:
686 flags |= RTF_BLACKHOLE;
687 break;
688 case K_PROTO1:
689 flags |= RTF_PROTO1;
690 break;
691 case K_PROTO2:
692 flags |= RTF_PROTO2;
693 break;
694 case K_PROXY:
695 proxy = 1;
696 break;
697 case K_CLONING:
698 flags |= RTF_CLONING;
699 break;
700 case K_XRESOLVE:
701 flags |= RTF_XRESOLVE;
702 break;
703 case K_STATIC:
704 flags |= RTF_STATIC;
705 break;
706 case K_IFA:
bc82d1bc 707 if (--argc == 0)
984263bc 708 usage((char *)NULL);
147a7be0 709 getaddr(RTA_IFA, *++argv, 0);
984263bc
MD		 710 break;
711 case K_IFP:
bc82d1bc 712 if (--argc == 0)
984263bc 713 usage((char *)NULL);
147a7be0 714 getaddr(RTA_IFP, *++argv, 0);
984263bc
MD		 715 break;
716 case K_GENMASK:
bc82d1bc 717 if (--argc == 0)
984263bc 718 usage((char *)NULL);
147a7be0 719 getaddr(RTA_GENMASK, *++argv, 0);
984263bc
MD		 720 break;
721 case K_GATEWAY:
bc82d1bc 722 if (--argc == 0)
984263bc 723 usage((char *)NULL);
147a7be0 724 getaddr(RTA_GATEWAY, *++argv, 0);
984263bc
MD		 725 break;
726 case K_DST:
bc82d1bc 727 if (--argc == 0)
984263bc
MD		 728 usage((char *)NULL);
729 ishost = getaddr(RTA_DST, *++argv, &hp);
730 dest = *argv;
731 break;
732 case K_NETMASK:
bc82d1bc 733 if (--argc == 0)
984263bc 734 usage((char *)NULL);
147a7be0 735 getaddr(RTA_NETMASK, *++argv, 0);
984263bc
MD		 736 /* FALLTHROUGH */
737 case K_NET:
738 forcenet++;
739 break;
740 case K_PREFIXLEN:
bc82d1bc 741 if (--argc == 0)
984263bc
MD		 742 usage((char *)NULL);
743 if (prefixlen(*++argv) == -1) {
744 forcenet = 0;
745 ishost = 1;
746 } else {
747 forcenet = 1;
748 ishost = 0;
749 }
750 break;
9b42cabe
NA		 751 case K_MPLS:
752 af = AF_MPLS;
753 aflen = sizeof(struct sockaddr_mpls);
754 break;
755 case K_POP:
756 flags |= RTF_MPLSOPS;
757 af = AF_MPLS;
758 mplsop = MPLSLOP_POP;
759 switch(++popcount){
760 case 1:
761 getaddr(RTA_MPLS1, "", 0);
762 break;
763 case 2:
764 getaddr(RTA_MPLS2, "", 0);
765 break;
766 case 3:
767 getaddr(RTA_MPLS3, "", 0);
768 break;
769 }
770 break;
771 case K_PUSH:
772 case K_SWAP:
773 if (popcount > 0) {
774 warnx("Push or swap after pop. Ignoring.");
775 break;
776 }
777 if (key == K_PUSH) {
778 mplsop = MPLSLOP_PUSH;
779 ++pushcount;
780 } else {
781 if (pushcount > 0) {
782 warnx("Swap after push. Ignoring.");
783 break;
784 }
785 if (swapcount > 0) {
786 warnx("Too many swaps. Ignoring.");
787 break;
788 }
789 mplsop = MPLSLOP_SWAP;
790 ++swapcount;
791 }
792 flags |= RTF_MPLSOPS;
793 af = AF_MPLS;
794 aflen = sizeof(struct sockaddr_mpls);
795 if (--argc == 0)
796 usage((char *)NULL);
797 switch(pushcount + swapcount){
798 case 1:
799 getaddr(RTA_MPLS1, *++argv, 0);
800 break;
801 case 2:
802 getaddr(RTA_MPLS2, *++argv, 0);
803 break;
804 case 3:
805 getaddr(RTA_MPLS3, *++argv, 0);
806 break;
807 }
808 break;
984263bc
MD		 809 case K_MTU:
810 case K_HOPCOUNT:
811 case K_EXPIRE:
812 case K_RECVPIPE:
813 case K_SENDPIPE:
814 case K_SSTHRESH:
815 case K_RTT:
816 case K_RTTVAR:
bc82d1bc 817 if (--argc == 0)
984263bc
MD		 818 usage((char *)NULL);
819 set_metric(*++argv, key);
820 break;
821 default:
822 usage(1+*argv);
823 }
824 } else {
825 if ((rtm_addrs & RTA_DST) == 0) {
826 dest = *argv;
827 ishost = getaddr(RTA_DST, *argv, &hp);
828 } else if ((rtm_addrs & RTA_GATEWAY) == 0) {
829 gateway = *argv;
147a7be0 830 getaddr(RTA_GATEWAY, *argv, &hp);
984263bc 831 } else {
147a7be0 832 getaddr(RTA_NETMASK, *argv, 0);
984263bc
MD		 833 forcenet = 1;
834 }
835 }
836 }
837 if (forcehost) {
838 ishost = 1;
839#ifdef INET6
840 if (af == AF_INET6) {
841 rtm_addrs &= ~RTA_NETMASK;
842 memset((void *)&so_mask, 0, sizeof(so_mask));
843 }
147a7be0 844#endif
984263bc
MD		 845 }
846 if (forcenet)
847 ishost = 0;
848 flags |= RTF_UP;
849 if (ishost)
850 flags |= RTF_HOST;
851 if (iflag == 0)
852 flags |= RTF_GATEWAY;
853 if (proxy) {
854 so_dst.sinarp.sin_other = SIN_PROXY;
855 flags |= RTF_ANNOUNCE;
856 }
857 for (attempts = 1; ; attempts++) {
858 errno = 0;
859 if ((ret = rtmsg(*cmd, flags)) == 0)
860 break;
861 if (errno != ENETUNREACH && errno != ESRCH)
862 break;
bc82d1bc
CP		 863 if (af == AF_INET && *gateway != '\0' &&
864 hp != NULL && hp->h_addr_list[1] != NULL) {
984263bc 865 hp->h_addr_list++;
5af3bab0
CP		 866 memmove(&so_gate.sin.sin_addr,
867 hp->h_addr_list[0],
868 MIN((size_t)hp->h_length,
869 sizeof(so_gate.sin.sin_addr)));
984263bc
MD		 870 } else
871 break;
872 }
873 if (*cmd == 'g')
874 exit(0);
875 if (!qflag) {
876 oerrno = errno;
147a7be0 877 printf("%s %s %s", cmd, ishost? "host" : "net", dest);
bc82d1bc 878 if (*gateway != '\0') {
147a7be0 879 printf(": gateway %s", gateway);
984263bc 880 if (attempts > 1 && ret == 0 && af == AF_INET)
147a7be0 881 printf(" (%s)",
984263bc
MD		 882 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr));
883 }
884 if (ret == 0) {
147a7be0 885 printf("\n");
984263bc
MD		 886 } else {
887 switch (oerrno) {
888 case ESRCH:
5af3bab0 889 err_str = "not in table";
984263bc
MD		 890 break;
891 case EBUSY:
5af3bab0 892 err_str = "entry in use";
984263bc
MD		 893 break;
894 case ENOBUFS:
5af3bab0 895 err_str = "routing table overflow";
984263bc 896 break;
147a7be0
MD		 897 case EDQUOT: /* handle recursion avoidance in
898 rt_setgate() */
5af3bab0 899 err_str = "gateway uses the same route";
984263bc
MD		 900 break;
901 default:
5af3bab0 902 err_str = strerror(oerrno);
984263bc
MD		 903 break;
904 }
5af3bab0 905 printf(": %s\n", err_str);
984263bc
MD		 906 }
907 }
908 exit(ret != 0);
909}
910
5af3bab0
CP		 911static void
912inet_makenetandmask(u_long net, struct sockaddr_in *in, u_long bits)
984263bc
MD		 913{
914 u_long addr, mask = 0;
147a7be0 915 char *cp;
984263bc
MD		 916
917 rtm_addrs |= RTA_NETMASK;
a80e869f
HT		 918 if (net <= 0xff)
919 addr = net << 24;
920 else if (net <= 0xffff)
921 addr = net << 16;
922 else if (net <= 0xffffff)
923 addr = net << 8;
924 else
925 addr = net;
a7c98c34 926
a80e869f
HT		 927 if (bits)
928 mask = 0xffffffff << (32 - bits);
929 else {
930 if (IN_CLASSA(addr)) {
931 mask = IN_CLASSA_NET;
932 } else if (IN_CLASSB(addr)) {
933 mask = IN_CLASSB_NET;
934 } else if (IN_CLASSC(addr)) {
935 mask = IN_CLASSC_NET;
936 } else
937 mask = 0xffffffff;
984263bc 938 }
5af3bab0
CP		 939 in->sin_addr.s_addr = htonl(addr);
940 in = &so_mask.sin;
941 in->sin_addr.s_addr = htonl(mask);
942 in->sin_len = 0;
943 in->sin_family = 0;
944 cp = (char *)(&in->sin_addr + 1);
945 while (*--cp == 0 && cp > (char *)in)
984263bc 946 ;
5af3bab0 947 in->sin_len = 1 + cp - (char *)in;
984263bc
MD		 948}
949
950#ifdef INET6
951/*
952 * XXX the function may need more improvement...
953 */
954static int
5af3bab0 955inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen)
984263bc
MD		 956{
957 struct in6_addr in6;
958
bc82d1bc 959 if (plen == NULL) {
984263bc
MD		 960 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
961 sin6->sin6_scope_id == 0) {
962 plen = "0";
963 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
964 /* aggregatable global unicast - RFC2374 */
965 memset(&in6, 0, sizeof(in6));
bc82d1bc
CP		 966 if (memcmp(&sin6->sin6_addr.s6_addr[8],
967 &in6.s6_addr[8], 8) == 0)
984263bc
MD		 968 plen = "64";
969 }
970 }
971
bc82d1bc 972 if (plen == NULL || strcmp(plen, "128") == 0)
147a7be0 973 return(1);
984263bc 974 rtm_addrs |= RTA_NETMASK;
147a7be0
MD		 975 prefixlen(plen);
976 return(0);
984263bc
MD		 977}
978#endif
979
980/*
981 * Interpret an argument as a network address of some kind,
982 * returning 1 if a host address, 0 if a network address.
983 */
5af3bab0
CP		 984static int
985getaddr(int which, char *str, struct hostent **hpp)
984263bc 986{
147a7be0 987 sup su;
984263bc
MD		 988 struct hostent *hp;
989 struct netent *np;
990 u_long val;
991 char *q;
992 int afamily; /* local copy of af so we can change it */
993
994 if (af == 0) {
995 af = AF_INET;
996 aflen = sizeof(struct sockaddr_in);
997 }
998 afamily = af;
999 rtm_addrs |= which;
1000 switch (which) {
1001 case RTA_DST:
1002 su = &so_dst;
1003 break;
1004 case RTA_GATEWAY:
1005 su = &so_gate;
1006 if (iflag) {
1007 struct ifaddrs *ifap, *ifa;
1008 struct sockaddr_dl *sdl = NULL;
1009
1010 if (getifaddrs(&ifap))
1011 err(1, "getifaddrs");
1012
bc82d1bc 1013 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
984263bc
MD		 1014 if (ifa->ifa_addr->sa_family != AF_LINK)
1015 continue;
1016
bc82d1bc 1017 if (strcmp(str, ifa->ifa_name) != 0)
984263bc
MD		 1018 continue;
1019
1020 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
1021 }
1022 /* If we found it, then use it */
bc82d1bc 1023 if (sdl != NULL) {
984263bc
MD		 1024 /*
1025 * Copy is safe since we have a
1026 * sockaddr_storage member in sockunion{}.
1027 * Note that we need to copy before calling
1028 * freeifaddrs().
03f869ef
MD		 1029 *
1030 * Interface routes are routed only by their
1031 * sdl_index or interface name (we provide
1032 * both here), not by the ARP address of the
1033 * local interface (alen, slen = 0).
984263bc
MD		 1034 */
1035 memcpy(&su->sdl, sdl, sdl->sdl_len);
03f869ef
MD		 1036 su->sdl.sdl_alen = 0;
1037 su->sdl.sdl_slen = 0;
984263bc
MD		 1038 }
1039 freeifaddrs(ifap);
bc82d1bc 1040 if (sdl != NULL)
984263bc
MD		 1041 return(1);
1042 }
1043 break;
1044 case RTA_NETMASK:
1045 su = &so_mask;
1046 break;
1047 case RTA_GENMASK:
1048 su = &so_genmask;
1049 break;
1050 case RTA_IFP:
1051 su = &so_ifp;
1052 afamily = AF_LINK;
1053 break;
1054 case RTA_IFA:
1055 su = &so_ifa;
1056 break;
9b42cabe
NA		 1057 case RTA_MPLS1:
1058 su = &so_mpls1;
1059 break;
1060 case RTA_MPLS2:
1061 su = &so_mpls2;
1062 break;
1063 case RTA_MPLS3:
1064 su = &so_mpls3;
1065 break;
984263bc
MD		 1066 default:
1067 usage("internal error");
1068 /*NOTREACHED*/
1069 }
1070 su->sa.sa_len = aflen;
147a7be0
MD		 1071 su->sa.sa_family = afamily; /* cases that don't want it have left
1072 already */
5af3bab0 1073 if (strcmp(str, "default") == 0) {
984263bc 1074 /*
147a7be0 1075 * Default is net 0.0.0.0/0
984263bc
MD		 1076 */
1077 switch (which) {
1078 case RTA_DST:
1079 forcenet++;
1080 /* bzero(su, sizeof(*su)); *//* for readability */
5af3bab0 1081 getaddr(RTA_NETMASK, str, 0);
984263bc
MD		 1082 break;
1083 case RTA_NETMASK:
1084 case RTA_GENMASK:
1085 /* bzero(su, sizeof(*su)); *//* for readability */
8af0d623 1086 break;
984263bc 1087 }
147a7be0 1088 return(0);
984263bc
MD		 1089 }
1090 switch (afamily) {
1091#ifdef INET6
1092 case AF_INET6:
1093 {
1094 struct addrinfo hints, *res;
1095
1096 q = NULL;
5af3bab0 1097 if (which == RTA_DST && (q = strchr(str, '/')) != NULL)
984263bc
MD		 1098 *q = '\0';
1099 memset(&hints, 0, sizeof(hints));
1100 hints.ai_family = afamily; /*AF_INET6*/
1101 hints.ai_flags = AI_NUMERICHOST;
1102 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
5af3bab0 1103 if (getaddrinfo(str, "0", &hints, &res) != 0 ||
984263bc
MD		 1104 res->ai_family != AF_INET6 ||
1105 res->ai_addrlen != sizeof(su->sin6)) {
5af3bab0 1106 fprintf(stderr, "%s: bad value\n", str);
984263bc
MD		 1107 exit(1);
1108 }
1109 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6));
1110#ifdef __KAME__
1111 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) ||
1112 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) &&
1113 su->sin6.sin6_scope_id) {
1114 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] =
1115 htons(su->sin6.sin6_scope_id);
1116 su->sin6.sin6_scope_id = 0;
1117 }
1118#endif
1119 freeaddrinfo(res);
1120 if (q != NULL)
1121 *q++ = '/';
1122 if (which == RTA_DST)
147a7be0
MD		 1123 return(inet6_makenetandmask(&su->sin6, q));
1124 return(0);
984263bc
MD		 1125 }
1126#endif /* INET6 */
1127
1128#ifdef NS
1129 case AF_NS:
1130 if (which == RTA_DST) {
984263bc
MD		 1131 struct sockaddr_ns *sms = &(so_mask.sns);
1132 memset(sms, 0, sizeof(*sms));
1133 sms->sns_family = 0;
1134 sms->sns_len = 6;
1135 sms->sns_addr.x_net = *(union ns_net *)ns_bh;
1136 rtm_addrs |= RTA_NETMASK;
1137 }
5af3bab0 1138 su->sns.sns_addr = ns_addr(str);
147a7be0 1139 return(!ns_nullhost(su->sns.sns_addr));
984263bc
MD		 1140#endif
1141
984263bc 1142 case AF_APPLETALK:
5af3bab0
CP		 1143 if (!atalk_aton(str, &su->sat.sat_addr))
1144 errx(EX_NOHOST, "bad address: %s", str);
984263bc
MD		 1145 rtm_addrs |= RTA_NETMASK;
1146 return(forcehost || su->sat.sat_addr.s_node != 0);
1147
1148 case AF_LINK:
5af3bab0 1149 link_addr(str, &su->sdl);
147a7be0 1150 return(1);
984263bc 1151
984263bc
MD		 1152 case PF_ROUTE:
1153 su->sa.sa_len = sizeof(*su);
5af3bab0 1154 sockaddr(str, &su->sa);
147a7be0 1155 return(1);
984263bc 1156
9b42cabe
NA		 1157 case AF_MPLS:
1158 {
1159 mpls_label_t label;
1160
1161 bzero(su, sizeof(*su));
1162 su->sa.sa_len = sizeof(*su);
1163 su->sa.sa_family = AF_MPLS;
1164 su->smpls.smpls_op = mplsop;
1165 if (mplsop != MPLSLOP_POP && mplsop != MPLSLOP_POPALL &&
1166 *str != '\0') {
1167 if (sscanf(str, "%u", &label) != 1)
1168 errx(EX_NOHOST, "bad address: %s", str);
1169 su->smpls.smpls_label = htonl(label);
1170 }
1171 return(1);
1172 }
1173
984263bc
MD		 1174 case AF_INET:
1175 default:
1176 break;
1177 }
1178
1179 if (hpp == NULL)
1180 hpp = &hp;
1181 *hpp = NULL;
1182
5af3bab0 1183 q = strchr(str,'/');
bc82d1bc 1184 if (q != NULL && which == RTA_DST) {
984263bc 1185 *q = '\0';
5af3bab0 1186 if ((val = inet_network(str)) != INADDR_NONE) {
984263bc
MD		 1187 inet_makenetandmask(
1188 val, &su->sin, strtoul(q+1, 0, 0));
147a7be0 1189 return(0);
984263bc
MD		 1190 }
1191 *q = '/';
1192 }
1193 if ((which != RTA_DST || forcenet == 0) &&
5af3bab0 1194 inet_aton(str, &su->sin.sin_addr)) {
984263bc
MD		 1195 val = su->sin.sin_addr.s_addr;
1196 if (which != RTA_DST ||
1197 inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
147a7be0 1198 return(1);
984263bc
MD		 1199 else {
1200 val = ntohl(val);
1201 goto netdone;
1202 }
1203 }
1204 if (which == RTA_DST && forcehost == 0 &&
5af3bab0
CP		 1205 ((val = inet_network(str)) != INADDR_NONE ||
1206 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) {
984263bc
MD		 1207netdone:
1208 inet_makenetandmask(val, &su->sin, 0);
147a7be0 1209 return(0);
984263bc 1210 }
5af3bab0 1211 hp = gethostbyname(str);
bc82d1bc 1212 if (hp != NULL) {
984263bc
MD		 1213 *hpp = hp;
1214 su->sin.sin_family = hp->h_addrtype;
1215 memmove((char *)&su->sin.sin_addr, hp->h_addr,
5af3bab0 1216 MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr)));
147a7be0 1217 return(1);
984263bc 1218 }
5af3bab0 1219 errx(EX_NOHOST, "bad address: %s", str);
984263bc
MD		 1220}
1221
5af3bab0
CP		 1222static int
1223prefixlen(const char *len_str)
984263bc 1224{
5af3bab0 1225 int len = atoi(len_str), q, r;
984263bc
MD		 1226 int max;
1227 char *p;
1228
1229 rtm_addrs |= RTA_NETMASK;
1230 switch (af) {
1231#ifdef INET6
1232 case AF_INET6:
1233 max = 128;
1234 p = (char *)&so_mask.sin6.sin6_addr;
1235 break;
1236#endif
1237 case AF_INET:
1238 max = 32;
1239 p = (char *)&so_mask.sin.sin_addr;
1240 break;
1241 default:
147a7be0 1242 fprintf(stderr, "prefixlen not supported in this af\n");
984263bc
MD		 1243 exit(1);
1244 /*NOTREACHED*/
1245 }
1246
1247 if (len < 0 || max < len) {
5af3bab0 1248 fprintf(stderr, "%s: bad value\n", len_str);
984263bc
MD		 1249 exit(1);
1250 }
1251
1252 q = len >> 3;
1253 r = len & 7;
1254 so_mask.sa.sa_family = af;
1255 so_mask.sa.sa_len = aflen;
1256 memset((void *)p, 0, max / 8);
1257 if (q > 0)
1258 memset((void *)p, 0xff, q);
1259 if (r > 0)
1260 *((u_char *)p + q) = (0xff00 >> r) & 0xff;
1261 if (len == max)
147a7be0 1262 return(-1);
984263bc 1263 else
147a7be0 1264 return(len);
984263bc
MD		 1265}
1266
1267#ifdef NS
1268short ns_nullh[] = {0,0,0};
984263bc
MD		 1269
1270char *
b5744197 1271ns_print(struct sockaddr_ns *sns)
984263bc
MD		 1272{
1273 struct ns_addr work;
1274 union { union ns_net net_e; u_long long_e; } net;
1275 u_short port;
1276 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25];
5af3bab0 1277 const char *host = "";
147a7be0
MD		 1278 char *p;
1279 u_char *q;
984263bc
MD		 1280
1281 work = sns->sns_addr;
1282 port = ntohs(work.x_port);
1283 work.x_port = 0;
1284 net.net_e = work.x_net;
1285 if (ns_nullhost(work) && net.long_e == 0) {
bc82d1bc 1286 if (port == 0)
5af3bab0
CP		 1287 strncpy(mybuf, "*.*", sizeof(mybuf));
1288 else
1289 sprintf(mybuf, "*.%XH", port);
147a7be0 1290 return(mybuf);
984263bc
MD		 1291 }
1292
1293 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0)
1294 host = "any";
1295 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0)
1296 host = "*";
1297 else {
1298 q = work.x_host.c_host;
147a7be0 1299 sprintf(chost, "%02X%02X%02X%02X%02X%02XH",
984263bc
MD		 1300 q[0], q[1], q[2], q[3], q[4], q[5]);
1301 for (p = chost; *p == '0' && p < chost + 12; p++)
1302 /* void */;
1303 host = p;
1304 }
bc82d1bc 1305 if (port != 0)
147a7be0 1306 sprintf(cport, ".%XH", htons(port));
984263bc
MD		 1307 else
1308 *cport = 0;
1309
147a7be0 1310 snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s",
984263bc
MD		 1311 (unsigned long)ntohl(net.long_e),
1312 host, cport);
147a7be0 1313 return(mybuf);
984263bc
MD		 1314}
1315#endif
1316
5af3bab0 1317static void
b5744197 1318interfaces(void)
984263bc
MD		 1319{
1320 size_t needed;
1321 int mib[6];
1322 char *buf, *lim, *next;
147a7be0 1323 struct rt_msghdr *rtm;
984263bc
MD		 1324
1325 mib[0] = CTL_NET;
1326 mib[1] = PF_ROUTE;
1327 mib[2] = 0; /* protocol */
1328 mib[3] = 0; /* wildcard address family */
1329 mib[4] = NET_RT_IFLIST;
1330 mib[5] = 0; /* no flags */
1331 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
1332 err(EX_OSERR, "route-sysctl-estimate");
1333 if ((buf = malloc(needed)) == NULL)
1334 errx(EX_OSERR, "malloc failed");
1335 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
1336 err(EX_OSERR, "actual retrieval of interface table");
1337 lim = buf + needed;
1338 for (next = buf; next < lim; next += rtm->rtm_msglen) {
1339 rtm = (struct rt_msghdr *)next;
1340 print_rtmsg(rtm, rtm->rtm_msglen);
1341 }
1342}
1343
5af3bab0 1344static void
b5744197 1345monitor(void)
984263bc
MD		 1346{
1347 int n;
1348 char msg[2048];
1349
1350 verbose = 1;
1351 if (debugonly) {
1352 interfaces();
1353 exit(0);
1354 }
147a7be0 1355 for (;;) {
984263bc
MD		 1356 time_t now;
1357 n = read(s, msg, 2048);
1358 now = time(NULL);
147a7be0 1359 printf("\ngot message of size %d on %s", n, ctime(&now));
984263bc
MD		 1360 print_rtmsg((struct rt_msghdr *)msg, n);
1361 }
1362}
1363
1364struct {
1365 struct rt_msghdr m_rtm;
1366 char m_space[512];
1367} m_rtmsg;
1368
5af3bab0 1369static int
b5744197 1370rtmsg(int cmd, int flags)
984263bc
MD		 1371{
1372 static int seq;
1373 int rlen;
147a7be0
MD		 1374 char *cp = m_rtmsg.m_space;
1375 int l;
984263bc
MD		 1376
1377#define NEXTADDR(w, u) \
1378 if (rtm_addrs & (w)) {\
1379 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\
1380 if (verbose) sodump(&(u),"u");\
1381 }
1382
1383 errno = 0;
1384 memset(&m_rtmsg, 0, sizeof(m_rtmsg));
1385 if (cmd == 'a')
1386 cmd = RTM_ADD;
1387 else if (cmd == 'c')
1388 cmd = RTM_CHANGE;
1389 else if (cmd == 'g') {
1390 cmd = RTM_GET;
1391 if (so_ifp.sa.sa_family == 0) {
1392 so_ifp.sa.sa_family = AF_LINK;
1393 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
1394 rtm_addrs |= RTA_IFP;
1395 }
1396 } else
1397 cmd = RTM_DELETE;
1398#define rtm m_rtmsg.m_rtm
1399 rtm.rtm_type = cmd;
1400 rtm.rtm_flags = flags;
1401 rtm.rtm_version = RTM_VERSION;
1402 rtm.rtm_seq = ++seq;
1403 rtm.rtm_addrs = rtm_addrs;
1404 rtm.rtm_rmx = rt_metrics;
1405 rtm.rtm_inits = rtm_inits;
1406
1407 if (rtm_addrs & RTA_NETMASK)
1408 mask_addr();
1409 NEXTADDR(RTA_DST, so_dst);
1410 NEXTADDR(RTA_GATEWAY, so_gate);
1411 NEXTADDR(RTA_NETMASK, so_mask);
1412 NEXTADDR(RTA_GENMASK, so_genmask);
1413 NEXTADDR(RTA_IFP, so_ifp);
1414 NEXTADDR(RTA_IFA, so_ifa);
9b42cabe
NA		 1415 NEXTADDR(RTA_MPLS1, so_mpls1);
1416 NEXTADDR(RTA_MPLS2, so_mpls2);
1417 NEXTADDR(RTA_MPLS3, so_mpls3);
984263bc
MD		 1418 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
1419 if (verbose)
1420 print_rtmsg(&rtm, l);
1421 if (debugonly)
147a7be0 1422 return(0);
984263bc
MD		 1423 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
1424 warn("writing to routing socket");
147a7be0 1425 return(-1);
984263bc
MD		 1426 }
1427 if (cmd == RTM_GET) {
1428 do {
1429 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
1430 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
1431 if (l < 0)
1432 warn("read from routing socket");
1433 else
1434 print_getmsg(&rtm, l);
1435 }
1436#undef rtm
147a7be0 1437 return(0);
984263bc
MD		 1438}
1439
5af3bab0 1440static void
b5744197 1441mask_addr(void)
984263bc
MD		 1442{
1443 int olen = so_mask.sa.sa_len;
147a7be0 1444 char *cp1 = olen + (char *)&so_mask, *cp2;
984263bc
MD		 1445
1446 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; )
1447 if (*--cp1 != 0) {
1448 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask;
1449 break;
1450 }
1451 if ((rtm_addrs & RTA_DST) == 0)
1452 return;
1453 switch (so_dst.sa.sa_family) {
1454#ifdef NS
1455 case AF_NS:
1456#endif
1457 case AF_INET:
1458#ifdef INET6
1459 case AF_INET6:
1460#endif
1461 case AF_APPLETALK:
1462 case 0:
1463 return;
1464 }
1465 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst;
1466 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst;
1467 while (cp2 > cp1)
1468 *--cp2 = 0;
1469 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask;
1470 while (cp1 > so_dst.sa.sa_data)
1471 *--cp1 &= *--cp2;
1472}
1473
5af3bab0 1474const char *msgtypes[] = {
984263bc
MD		 1475 "",
1476 "RTM_ADD: Add Route",
1477 "RTM_DELETE: Delete Route",
1478 "RTM_CHANGE: Change Metrics or flags",
1479 "RTM_GET: Report Metrics",
1480 "RTM_LOSING: Kernel Suspects Partitioning",
1481 "RTM_REDIRECT: Told to use different route",
1482 "RTM_MISS: Lookup failed on this address",
1483 "RTM_LOCK: fix specified metrics",
1484 "RTM_OLDADD: caused by SIOCADDRT",
1485 "RTM_OLDDEL: caused by SIOCDELRT",
1486 "RTM_RESOLVE: Route created by cloning",
1487 "RTM_NEWADDR: address being added to iface",
1488 "RTM_DELADDR: address being removed from iface",
1489 "RTM_IFINFO: iface status change",
1490 "RTM_NEWMADDR: new multicast group membership on iface",
1491 "RTM_DELMADDR: multicast group membership removed from iface",
1492 "RTM_IFANNOUNCE: interface arrival/departure",
1493 0,
1494};
1495
1496char metricnames[] =
1497"\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount"
1498"\1mtu";
1499char routeflags[] =
1500"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT"
1501"\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016"
1502"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE"
1503"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST";
1504char ifnetflags[] =
1505"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1506"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1507"\017LINK2\020MULTICAST";
1508char addrnames[] =
9b42cabe
NA		 1509"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"
1510"\011MPLS1\012MPLS2\013MPLS3";
984263bc 1511
5af3bab0
CP		 1512static void
1513print_rtmsg(struct rt_msghdr *rtm, int msglen __unused)
984263bc
MD		 1514{
1515 struct if_msghdr *ifm;
1516 struct ifa_msghdr *ifam;
1517#ifdef RTM_NEWMADDR
1518 struct ifma_msghdr *ifmam;
1519#endif
1520 struct if_announcemsghdr *ifan;
1521
1522 if (verbose == 0)
1523 return;
1524 if (rtm->rtm_version != RTM_VERSION) {
147a7be0 1525 printf("routing message version %d not understood\n",
984263bc
MD		 1526 rtm->rtm_version);
1527 return;
1528 }
1529 if (msgtypes[rtm->rtm_type] != NULL)
147a7be0 1530 printf("%s: ", msgtypes[rtm->rtm_type]);
984263bc 1531 else
147a7be0
MD		 1532 printf("#%d: ", rtm->rtm_type);
1533 printf("len %d, ", rtm->rtm_msglen);
984263bc
MD		 1534 switch (rtm->rtm_type) {
1535 case RTM_IFINFO:
1536 ifm = (struct if_msghdr *)rtm;
147a7be0 1537 printf("if# %d, flags:", ifm->ifm_index);
984263bc
MD		 1538 bprintf(stdout, ifm->ifm_flags, ifnetflags);
1539 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs);
1540 break;
1541 case RTM_NEWADDR:
1542 case RTM_DELADDR:
1543 ifam = (struct ifa_msghdr *)rtm;
147a7be0 1544 printf("metric %d, flags:", ifam->ifam_metric);
984263bc
MD		 1545 bprintf(stdout, ifam->ifam_flags, routeflags);
1546 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs);
1547 break;
1548#ifdef RTM_NEWMADDR
1549 case RTM_NEWMADDR:
1550 case RTM_DELMADDR:
1551 ifmam = (struct ifma_msghdr *)rtm;
1552 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs);
1553 break;
1554#endif
1555 case RTM_IFANNOUNCE:
1556 ifan = (struct if_announcemsghdr *)rtm;
147a7be0 1557 printf("if# %d, what: ", ifan->ifan_index);
984263bc
MD		 1558 switch (ifan->ifan_what) {
1559 case IFAN_ARRIVAL:
1560 printf("arrival");
1561 break;
1562 case IFAN_DEPARTURE:
1563 printf("departure");
1564 break;
1565 default:
1566 printf("#%d", ifan->ifan_what);
1567 break;
1568 }
1569 printf("\n");
1570 break;
1571
1572 default:
147a7be0 1573 printf("pid: %ld, seq %d, errno %d, flags:",
984263bc
MD		 1574 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1575 bprintf(stdout, rtm->rtm_flags, routeflags);
1576 pmsg_common(rtm);
1577 }
1578}
1579
5af3bab0 1580static void
147a7be0 1581print_getmsg(struct rt_msghdr *rtm, int msglen)
984263bc
MD		 1582{
1583 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
1584 struct sockaddr_dl *ifp = NULL;
147a7be0
MD		 1585 struct sockaddr *sa;
1586 char *cp;
1587 int i;
984263bc 1588
147a7be0 1589 printf(" route to: %s\n", routename(&so_dst.sa));
984263bc
MD		 1590 if (rtm->rtm_version != RTM_VERSION) {
1591 warnx("routing message version %d not understood",
1592 rtm->rtm_version);
1593 return;
1594 }
1595 if (rtm->rtm_msglen > msglen) {
1596 warnx("message length mismatch, in packet %d, returned %d",
1597 rtm->rtm_msglen, msglen);
1598 }
bc82d1bc 1599 if (rtm->rtm_errno != 0) {
984263bc
MD		 1600 errno = rtm->rtm_errno;
1601 warn("message indicates error %d", errno);
1602 return;
1603 }
1604 cp = ((char *)(rtm + 1));
1605 if (rtm->rtm_addrs)
bc82d1bc 1606 for (i = 1; i != 0; i <<= 1)
984263bc
MD		 1607 if (i & rtm->rtm_addrs) {
1608 sa = (struct sockaddr *)cp;
1609 switch (i) {
1610 case RTA_DST:
1611 dst = sa;
1612 break;
1613 case RTA_GATEWAY:
1614 gate = sa;
1615 break;
1616 case RTA_NETMASK:
1617 mask = sa;
1618 break;
1619 case RTA_IFP:
1620 if (sa->sa_family == AF_LINK &&
1621 ((struct sockaddr_dl *)sa)->sdl_nlen)
1622 ifp = (struct sockaddr_dl *)sa;
1623 break;
1624 }
1625 ADVANCE(cp, sa);
1626 }
bc82d1bc 1627 if (dst != NULL && mask != NULL)
984263bc 1628 mask->sa_family = dst->sa_family; /* XXX */
bc82d1bc 1629 if (dst != NULL)
147a7be0 1630 printf("destination: %s\n", routename(dst));
bc82d1bc 1631 if (mask != NULL) {
984263bc
MD		 1632 int savenflag = nflag;
1633
1634 nflag = 1;
147a7be0 1635 printf(" mask: %s\n", routename(mask));
984263bc
MD		 1636 nflag = savenflag;
1637 }
bc82d1bc 1638 if (gate != NULL && rtm->rtm_flags & RTF_GATEWAY)
147a7be0 1639 printf(" gateway: %s\n", routename(gate));
bc82d1bc 1640 if (ifp != NULL)
147a7be0 1641 printf(" interface: %.*s\n",
984263bc 1642 ifp->sdl_nlen, ifp->sdl_data);
147a7be0 1643 printf(" flags: ");
984263bc
MD		 1644 bprintf(stdout, rtm->rtm_flags, routeflags);
1645
1646#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1647#define msec(u) (((u) + 500) / 1000) /* usec to msec */
1648
147a7be0 1649 printf("\n%s\n", "\
984263bc
MD		 1650 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire");
1651 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1652 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1653 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1654 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1655 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR));
1656 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT));
1657 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
bc82d1bc 1658 if (rtm->rtm_rmx.rmx_expire != 0)
984263bc
MD		 1659 rtm->rtm_rmx.rmx_expire -= time(0);
1660 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
1661#undef lock
1662#undef msec
1663#define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
1664 if (verbose)
1665 pmsg_common(rtm);
1666 else if (rtm->rtm_addrs &~ RTA_IGN) {
147a7be0 1667 printf("sockaddrs: ");
984263bc
MD		 1668 bprintf(stdout, rtm->rtm_addrs, addrnames);
1669 putchar('\n');
1670 }
1671#undef RTA_IGN
1672}
1673
5af3bab0 1674static void
147a7be0 1675pmsg_common(struct rt_msghdr *rtm)
984263bc 1676{
147a7be0 1677 printf("\nlocks: ");
984263bc 1678 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
147a7be0 1679 printf(" inits: ");
984263bc
MD		 1680 bprintf(stdout, rtm->rtm_inits, metricnames);
1681 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs);
1682}
1683
5af3bab0 1684static void
b5744197 1685pmsg_addrs(char *cp, int addrs)
984263bc 1686{
147a7be0 1687 struct sockaddr *sa;
984263bc
MD		 1688 int i;
1689
1690 if (addrs == 0) {
147a7be0 1691 putchar('\n');
984263bc
MD		 1692 return;
1693 }
147a7be0 1694 printf("\nsockaddrs: ");
984263bc 1695 bprintf(stdout, addrs, addrnames);
147a7be0 1696 putchar('\n');
bc82d1bc 1697 for (i = 1; i != 0; i <<= 1)
984263bc
MD		 1698 if (i & addrs) {
1699 sa = (struct sockaddr *)cp;
147a7be0 1700 printf(" %s", routename(sa));
984263bc
MD		 1701 ADVANCE(cp, sa);
1702 }
147a7be0
MD		 1703 putchar('\n');
1704 fflush(stdout);
984263bc
MD		 1705}
1706
5af3bab0
CP		 1707static void
1708bprintf(FILE *fp, int b, u_char *str)
984263bc 1709{
147a7be0 1710 int i;
984263bc
MD		 1711 int gotsome = 0;
1712
1713 if (b == 0)
1714 return;
5af3bab0 1715 while ((i = *str++) != 0) {
984263bc 1716 if (b & (1 << (i-1))) {
bc82d1bc 1717 if (!gotsome)
984263bc
MD		 1718 i = '<';
1719 else
1720 i = ',';
147a7be0 1721 putc(i, fp);
984263bc 1722 gotsome = 1;
5af3bab0 1723 for (; (i = *str) > 32; str++)
147a7be0 1724 putc(i, fp);
984263bc 1725 } else
5af3bab0
CP		 1726 while (*str > 32)
1727 str++;
984263bc
MD		 1728 }
1729 if (gotsome)
147a7be0 1730 putc('>', fp);
984263bc
MD		 1731}
1732
1733int
5af3bab0 1734keyword(const char *cp)
984263bc 1735{
147a7be0 1736 struct keytab *kt = keywords;
984263bc 1737
bc82d1bc 1738 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0)
984263bc 1739 kt++;
147a7be0 1740 return(kt->kt_i);
984263bc
MD		 1741}
1742
5af3bab0
CP		 1743static void
1744sodump(sup su, const char *which)
984263bc
MD		 1745{
1746 switch (su->sa.sa_family) {
1747 case AF_LINK:
147a7be0 1748 printf("%s: link %s; ",
984263bc
MD		 1749 which, link_ntoa(&su->sdl));
1750 break;
1751 case AF_INET:
147a7be0 1752 printf("%s: inet %s; ",
984263bc
MD		 1753 which, inet_ntoa(su->sin.sin_addr));
1754 break;
1755 case AF_APPLETALK:
147a7be0 1756 printf("%s: atalk %s; ",
984263bc
MD		 1757 which, atalk_ntoa(su->sat.sat_addr));
1758 break;
1759#ifdef NS
1760 case AF_NS:
147a7be0 1761 printf("%s: xns %s; ",
984263bc
MD		 1762 which, ns_ntoa(su->sns.sns_addr));
1763 break;
1764#endif
1765 }
147a7be0 1766 fflush(stdout);
984263bc
MD		 1767}
1768
1769/* States*/
1770#define VIRGIN 0
1771#define GOTONE 1
1772#define GOTTWO 2
1773/* Inputs */
1774#define DIGIT (4*0)
1775#define END (4*1)
1776#define DELIM (4*2)
1777
5af3bab0 1778static void
147a7be0 1779sockaddr(char *addr, struct sockaddr *sa)
984263bc 1780{
147a7be0 1781 char *cp = (char *)sa;
984263bc
MD		 1782 int size = sa->sa_len;
1783 char *cplim = cp + size;
147a7be0 1784 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
984263bc
MD		 1785
1786 memset(cp, 0, size);
1787 cp++;
1788 do {
1789 if ((*addr >= '0') && (*addr <= '9')) {
1790 new = *addr - '0';
1791 } else if ((*addr >= 'a') && (*addr <= 'f')) {
1792 new = *addr - 'a' + 10;
1793 } else if ((*addr >= 'A') && (*addr <= 'F')) {
1794 new = *addr - 'A' + 10;
bc82d1bc 1795 } else if (*addr == '\0')
984263bc
MD		 1796 state |= END;
1797 else
1798 state |= DELIM;
1799 addr++;
1800 switch (state /* | INPUT */) {
1801 case GOTTWO | DIGIT:
1802 *cp++ = byte; /*FALLTHROUGH*/
1803 case VIRGIN | DIGIT:
1804 state = GOTONE; byte = new; continue;
1805 case GOTONE | DIGIT:
1806 state = GOTTWO; byte = new + (byte << 4); continue;
1807 default: /* | DELIM */
1808 state = VIRGIN; *cp++ = byte; byte = 0; continue;
1809 case GOTONE | END:
1810 case GOTTWO | END:
1811 *cp++ = byte; /* FALLTHROUGH */
1812 case VIRGIN | END:
1813 break;
1814 }
1815 break;
1816 } while (cp < cplim);
1817 sa->sa_len = cp - (char *)sa;
1818}
1819
5af3bab0 1820static int
984263bc
MD		 1821atalk_aton(const char *text, struct at_addr *addr)
1822{
1823 u_int net, node;
1824
1825 if (sscanf(text, "%u.%u", &net, &node) != 2
1826 || net > 0xffff || node > 0xff)
1827 return(0);
1828 addr->s_net = htons(net);
1829 addr->s_node = node;
1830 return(1);
1831}
1832
5af3bab0 1833static char *
984263bc
MD		 1834atalk_ntoa(struct at_addr at)
1835{
1836 static char buf[20];
1837
147a7be0 1838 snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);
984263bc
MD		 1839 return(buf);
1840}
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