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1 /*
2 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23 /*
24 * Copyright (c) 1983, 1989, 1991, 1993
25 * The Regents of the University of California. All rights reserved.
26 *
27 * Redistribution and use in source and binary forms, with or without
28 * modification, are permitted provided that the following conditions
29 * are met:
30 * 1. Redistributions of source code must retain the above copyright
31 * notice, this list of conditions and the following disclaimer.
32 * 2. Redistributions in binary form must reproduce the above copyright
33 * notice, this list of conditions and the following disclaimer in the
34 * documentation and/or other materials provided with the distribution.
35 * 3. All advertising materials mentioning features or use of this software
36 * must display the following acknowledgement:
37 * This product includes software developed by the University of
38 * California, Berkeley and its contributors.
39 * 4. Neither the name of the University nor the names of its contributors
40 * may be used to endorse or promote products derived from this software
41 * without specific prior written permission.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * SUCH DAMAGE.
54 */
55
56 #ifndef lint
57 static const char copyright[] =
58 "@(#) Copyright (c) 1983, 1989, 1991, 1993\n\
59 The Regents of the University of California. All rights reserved.\n";
60 #endif /* not lint */
61
62 #ifndef lint
63 #if 0
64 static char sccsid[] = "@(#)route.c 8.3 (Berkeley) 3/19/94";
65 #endif
66 static const char rcsid[] =
67 "$Id: route.c,v 1.3 2003/01/07 21:03:05 bbraun Exp $";
68 #endif /* not lint */
69
70 #include <sys/param.h>
71 #include <sys/file.h>
72 #include <sys/socket.h>
73 #include <sys/ioctl.h>
74 #include <sys/sysctl.h>
75 #include <sys/types.h>
76
77 #include <net/if.h>
78 #include <net/route.h>
79 #include <net/if_dl.h>
80 #include <netinet/in.h>
81 #ifndef __APPLE__
82 #include <netatalk/at.h>
83 #endif
84 #ifdef NS
85 #include <netns/ns.h>
86 #endif
87 #include <arpa/inet.h>
88 #include <netdb.h>
89
90 #include <ctype.h>
91 #include <err.h>
92 #include <errno.h>
93 #include <paths.h>
94 #include <stdio.h>
95 #include <stdlib.h>
96 #include <string.h>
97 #include <sysexits.h>
98 #include <unistd.h>
99 #include <ifaddrs.h>
100
101 struct keytab {
102 char *kt_cp;
103 int kt_i;
104 } keywords[] = {
105 #include "keywords.h"
106 {0, 0}
107 };
108
109 struct ortentry route;
110 union sockunion {
111 struct sockaddr sa;
112 struct sockaddr_in sin;
113 #ifdef INET6
114 struct sockaddr_in6 sin6;
115 #endif
116 #ifndef __APPLE__
117 struct sockaddr_at sat;
118 #endif
119 #ifdef NS
120 struct sockaddr_ns sns;
121 #endif
122 struct sockaddr_dl sdl;
123 struct sockaddr_storage ss; /* added to avoid memory overrun */
124 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp;
125
126 typedef union sockunion *sup;
127 int pid, rtm_addrs, uid;
128 int s;
129 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword();
130 int iflag, verbose, aflen = sizeof (struct sockaddr_in);
131 int locking, lockrest, debugonly;
132 struct rt_metrics rt_metrics;
133 u_long rtm_inits;
134 #ifndef __APPLE__
135 int atalk_aton __P((const char *, struct at_addr *));
136 char *atalk_ntoa __P((struct at_addr));
137 #endif
138 const char *routename(), *netname();
139 void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf();
140 void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr();
141 int getaddr(), rtmsg(), x25_makemask();
142 int prefixlen();
143 extern char *iso_ntoa();
144
145 void usage __P((const char *));
146
147 void
148 usage(cp)
149 const char *cp;
150 {
151 if (cp)
152 warnx("bad keyword: %s", cp);
153 (void) fprintf(stderr,
154 "usage: route [-dnqtv] command [[modifiers] args]\n");
155 exit(EX_USAGE);
156 /* NOTREACHED */
157 }
158
159 #define ROUNDUP(a) \
160 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
161 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
162
163 int
164 main(argc, argv)
165 int argc;
166 char **argv;
167 {
168 int ch;
169
170 if (argc < 2)
171 usage((char *)NULL);
172
173 while ((ch = getopt(argc, argv, "nqdtv")) != -1)
174 switch(ch) {
175 case 'n':
176 nflag = 1;
177 break;
178 case 'q':
179 qflag = 1;
180 break;
181 case 'v':
182 verbose = 1;
183 break;
184 case 't':
185 tflag = 1;
186 break;
187 case 'd':
188 debugonly = 1;
189 break;
190 case '?':
191 default:
192 usage((char *)NULL);
193 }
194 argc -= optind;
195 argv += optind;
196
197 pid = getpid();
198 uid = getuid();
199 if (tflag)
200 s = open(_PATH_DEVNULL, O_WRONLY, 0);
201 else
202 s = socket(PF_ROUTE, SOCK_RAW, 0);
203 if (s < 0)
204 err(EX_OSERR, "socket");
205 setuid(uid);
206 if (*argv)
207 switch (keyword(*argv)) {
208 case K_GET:
209 uid = 0;
210 /* FALLTHROUGH */
211
212 case K_CHANGE:
213 case K_ADD:
214 case K_DELETE:
215 newroute(argc, argv);
216 exit(0);
217 /* NOTREACHED */
218
219 case K_MONITOR:
220 monitor();
221 /* NOTREACHED */
222
223 case K_FLUSH:
224 flushroutes(argc, argv);
225 exit(0);
226 /* NOTREACHED */
227 }
228 usage(*argv);
229 /* NOTREACHED */
230 }
231
232 /*
233 * Purge all entries in the routing tables not
234 * associated with network interfaces.
235 */
236 void
237 flushroutes(argc, argv)
238 int argc;
239 char *argv[];
240 {
241 size_t needed;
242 int mib[6], rlen, seqno;
243 char *buf, *next, *lim;
244 register struct rt_msghdr *rtm;
245
246 if (uid) {
247 errx(EX_NOPERM, "must be root to alter routing table");
248 }
249 shutdown(s, 0); /* Don't want to read back our messages */
250 if (argc > 1) {
251 argv++;
252 if (argc == 2 && **argv == '-')
253 switch (keyword(*argv + 1)) {
254 case K_INET:
255 af = AF_INET;
256 break;
257 #ifdef INET6
258 case K_INET6:
259 af = AF_INET6;
260 break;
261 #endif
262 #ifndef __APPLE__
263 case K_ATALK:
264 af = AF_APPLETALK;
265 break;
266 #endif
267 #ifdef NS
268 case K_XNS:
269 af = AF_NS;
270 break;
271 #endif
272 case K_LINK:
273 af = AF_LINK;
274 break;
275 default:
276 goto bad;
277 } else
278 bad: usage(*argv);
279 }
280 mib[0] = CTL_NET;
281 mib[1] = PF_ROUTE;
282 mib[2] = 0; /* protocol */
283 mib[3] = 0; /* wildcard address family */
284 mib[4] = NET_RT_DUMP;
285 mib[5] = 0; /* no flags */
286 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
287 err(EX_OSERR, "route-sysctl-estimate");
288 if ((buf = malloc(needed)) == NULL)
289 errx(EX_OSERR, "malloc failed");
290 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
291 err(EX_OSERR, "route-sysctl-get");
292 lim = buf + needed;
293 if (verbose)
294 (void) printf("Examining routing table from sysctl\n");
295 seqno = 0; /* ??? */
296 for (next = buf; next < lim; next += rtm->rtm_msglen) {
297 rtm = (struct rt_msghdr *)next;
298 if (verbose)
299 print_rtmsg(rtm, rtm->rtm_msglen);
300 if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
301 continue;
302 if (af) {
303 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
304
305 if (sa->sa_family != af)
306 continue;
307 }
308 if (debugonly)
309 continue;
310 rtm->rtm_type = RTM_DELETE;
311 rtm->rtm_seq = seqno;
312 rlen = write(s, next, rtm->rtm_msglen);
313 if (rlen < (int)rtm->rtm_msglen) {
314 warn("write to routing socket");
315 (void) printf("got only %d for rlen\n", rlen);
316 break;
317 }
318 seqno++;
319 if (qflag)
320 continue;
321 if (verbose)
322 print_rtmsg(rtm, rlen);
323 else {
324 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
325 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
326 routename(sa) : netname(sa));
327 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa);
328 (void) printf("%-20.20s ", routename(sa));
329 (void) printf("done\n");
330 }
331 }
332 }
333
334 const char *
335 routename(sa)
336 struct sockaddr *sa;
337 {
338 register char *cp;
339 static char line[MAXHOSTNAMELEN + 1];
340 struct hostent *hp;
341 static char domain[MAXHOSTNAMELEN + 1];
342 static int first = 1;
343 #ifdef NS
344 char *ns_print();
345 #endif
346
347 if (first) {
348 first = 0;
349 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
350 (cp = index(domain, '.'))) {
351 domain[MAXHOSTNAMELEN] = '\0';
352 (void) strcpy(domain, cp + 1);
353 } else
354 domain[0] = 0;
355 }
356
357 if (sa->sa_len == 0)
358 strcpy(line, "default");
359 else switch (sa->sa_family) {
360
361 case AF_INET:
362 { struct in_addr in;
363 in = ((struct sockaddr_in *)sa)->sin_addr;
364
365 cp = 0;
366 if (in.s_addr == INADDR_ANY || sa->sa_len < 4)
367 cp = "default";
368 if (cp == 0 && !nflag) {
369 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
370 AF_INET);
371 if (hp) {
372 if ((cp = index(hp->h_name, '.')) &&
373 !strcmp(cp + 1, domain))
374 *cp = 0;
375 cp = hp->h_name;
376 }
377 }
378 if (cp) {
379 strncpy(line, cp, sizeof(line) - 1);
380 line[sizeof(line) - 1] = '\0';
381 } else {
382 /* XXX - why not inet_ntoa()? */
383 #define C(x) (unsigned)((x) & 0xff)
384 in.s_addr = ntohl(in.s_addr);
385 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
386 C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
387 }
388 break;
389 }
390
391 #ifdef INET6
392 case AF_INET6:
393 {
394 struct sockaddr_in6 sin6; /* use static var for safety */
395 int niflags = 0;
396 #ifdef NI_WITHSCOPEID
397 niflags = NI_WITHSCOPEID;
398 #endif
399
400 memset(&sin6, 0, sizeof(sin6));
401 memcpy(&sin6, sa, sa->sa_len);
402 sin6.sin6_len = sizeof(struct sockaddr_in6);
403 sin6.sin6_family = AF_INET6;
404 #ifdef __KAME__
405 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
406 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
407 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
408 sin6.sin6_scope_id == 0) {
409 sin6.sin6_scope_id =
410 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
411 sin6.sin6_addr.s6_addr[2] = 0;
412 sin6.sin6_addr.s6_addr[3] = 0;
413 }
414 #endif
415 if (nflag)
416 niflags |= NI_NUMERICHOST;
417 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
418 line, sizeof(line), NULL, 0, niflags) != 0)
419 strncpy(line, "invalid", sizeof(line));
420
421 return(line);
422 }
423 #endif
424 #ifndef __APPLE__
425 case AF_APPLETALK:
426 (void) snprintf(line, sizeof(line), "atalk %s",
427 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
428 break;
429 #endif
430
431 #ifdef NS
432 case AF_NS:
433 return (ns_print((struct sockaddr_ns *)sa));
434 #endif
435
436 case AF_LINK:
437 return (link_ntoa((struct sockaddr_dl *)sa));
438
439 default:
440 { u_short *s = (u_short *)sa;
441 u_short *slim = s + ((sa->sa_len + 1) >> 1);
442 char *cp = line + sprintf(line, "(%d)", sa->sa_family);
443 char *cpe = line + sizeof(line);
444
445 while (++s < slim && cp < cpe) /* start with sa->sa_data */
446 cp += snprintf(cp, cpe - cp, " %x", *s);
447 break;
448 }
449 }
450 return (line);
451 }
452
453 /*
454 * Return the name of the network whose address is given.
455 * The address is assumed to be that of a net or subnet, not a host.
456 */
457 const char *
458 netname(sa)
459 struct sockaddr *sa;
460 {
461 char *cp = 0;
462 static char line[MAXHOSTNAMELEN + 1];
463 struct netent *np = 0;
464 u_long net, mask;
465 register u_long i;
466 int subnetshift;
467 #ifdef NS
468 char *ns_print();
469 #endif
470
471 switch (sa->sa_family) {
472
473 case AF_INET:
474 { struct in_addr in;
475 in = ((struct sockaddr_in *)sa)->sin_addr;
476
477 i = in.s_addr = ntohl(in.s_addr);
478 if (in.s_addr == 0)
479 cp = "default";
480 else if (!nflag) {
481 if (IN_CLASSA(i)) {
482 mask = IN_CLASSA_NET;
483 subnetshift = 8;
484 } else if (IN_CLASSB(i)) {
485 mask = IN_CLASSB_NET;
486 subnetshift = 8;
487 } else {
488 mask = IN_CLASSC_NET;
489 subnetshift = 4;
490 }
491 /*
492 * If there are more bits than the standard mask
493 * would suggest, subnets must be in use.
494 * Guess at the subnet mask, assuming reasonable
495 * width subnet fields.
496 */
497 while (in.s_addr &~ mask)
498 mask = (long)mask >> subnetshift;
499 net = in.s_addr & mask;
500 while ((mask & 1) == 0)
501 mask >>= 1, net >>= 1;
502 np = getnetbyaddr(net, AF_INET);
503 if (np)
504 cp = np->n_name;
505 }
506 if (cp)
507 strncpy(line, cp, sizeof(line));
508 else if ((in.s_addr & 0xffffff) == 0)
509 (void) sprintf(line, "%u", C(in.s_addr >> 24));
510 else if ((in.s_addr & 0xffff) == 0)
511 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24),
512 C(in.s_addr >> 16));
513 else if ((in.s_addr & 0xff) == 0)
514 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
515 C(in.s_addr >> 16), C(in.s_addr >> 8));
516 else
517 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
518 C(in.s_addr >> 16), C(in.s_addr >> 8),
519 C(in.s_addr));
520 break;
521 }
522
523 #ifdef INET6
524 case AF_INET6:
525 {
526 struct sockaddr_in6 sin6; /* use static var for safety */
527 int niflags = 0;
528 #ifdef NI_WITHSCOPEID
529 niflags = NI_WITHSCOPEID;
530 #endif
531
532 memset(&sin6, 0, sizeof(sin6));
533 memcpy(&sin6, sa, sa->sa_len);
534 sin6.sin6_len = sizeof(struct sockaddr_in6);
535 sin6.sin6_family = AF_INET6;
536 #ifdef __KAME__
537 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
538 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
539 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
540 sin6.sin6_scope_id == 0) {
541 sin6.sin6_scope_id =
542 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
543 sin6.sin6_addr.s6_addr[2] = 0;
544 sin6.sin6_addr.s6_addr[3] = 0;
545 }
546 #endif
547 if (nflag)
548 niflags |= NI_NUMERICHOST;
549 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
550 line, sizeof(line), NULL, 0, niflags) != 0)
551 strncpy(line, "invalid", sizeof(line));
552
553 return(line);
554 }
555 #endif
556
557 #ifndef __APPLE__
558 case AF_APPLETALK:
559 (void) snprintf(line, sizeof(line), "atalk %s",
560 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
561 break;
562 #endif
563
564 #ifdef NS
565 case AF_NS:
566 return (ns_print((struct sockaddr_ns *)sa));
567 break;
568 #endif
569
570 case AF_LINK:
571 return (link_ntoa((struct sockaddr_dl *)sa));
572
573
574 default:
575 { u_short *s = (u_short *)sa->sa_data;
576 u_short *slim = s + ((sa->sa_len + 1)>>1);
577 char *cp = line + sprintf(line, "af %d:", sa->sa_family);
578 char *cpe = line + sizeof(line);
579
580 while (s < slim && cp < cpe)
581 cp += snprintf(cp, cpe - cp, " %x", *s++);
582 break;
583 }
584 }
585 return (line);
586 }
587
588 void
589 set_metric(value, key)
590 char *value;
591 int key;
592 {
593 int flag = 0;
594 u_long noval, *valp = &noval;
595
596 switch (key) {
597 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
598 caseof(K_MTU, RTV_MTU, rmx_mtu);
599 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
600 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
601 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
602 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
603 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
604 caseof(K_RTT, RTV_RTT, rmx_rtt);
605 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
606 }
607 rtm_inits |= flag;
608 if (lockrest || locking)
609 rt_metrics.rmx_locks |= flag;
610 if (locking)
611 locking = 0;
612 *valp = atoi(value);
613 }
614
615 void
616 newroute(argc, argv)
617 int argc;
618 register char **argv;
619 {
620 char *cmd, *dest = "", *gateway = "", *err;
621 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC;
622 int key;
623 struct hostent *hp = 0;
624
625 if (uid) {
626 errx(EX_NOPERM, "must be root to alter routing table");
627 }
628 cmd = argv[0];
629 if (*cmd != 'g')
630 shutdown(s, 0); /* Don't want to read back our messages */
631 while (--argc > 0) {
632 if (**(++argv)== '-') {
633 switch (key = keyword(1 + *argv)) {
634 case K_LINK:
635 af = AF_LINK;
636 aflen = sizeof(struct sockaddr_dl);
637 break;
638 case K_INET:
639 af = AF_INET;
640 aflen = sizeof(struct sockaddr_in);
641 break;
642 #ifdef INET6
643 case K_INET6:
644 af = AF_INET6;
645 aflen = sizeof(struct sockaddr_in6);
646 break;
647 #endif
648 #ifndef __APPLE__
649 case K_ATALK:
650 af = AF_APPLETALK;
651 aflen = sizeof(struct sockaddr_at);
652 break;
653 #endif
654 case K_SA:
655 af = PF_ROUTE;
656 aflen = sizeof(union sockunion);
657 break;
658 #ifdef NS
659 case K_XNS:
660 af = AF_NS;
661 aflen = sizeof(struct sockaddr_ns);
662 break;
663 #endif
664 case K_IFACE:
665 case K_INTERFACE:
666 iflag++;
667 break;
668 case K_NOSTATIC:
669 flags &= ~RTF_STATIC;
670 break;
671 case K_LLINFO:
672 flags |= RTF_LLINFO;
673 break;
674 case K_LOCK:
675 locking = 1;
676 break;
677 case K_LOCKREST:
678 lockrest = 1;
679 break;
680 case K_HOST:
681 forcehost++;
682 break;
683 case K_REJECT:
684 flags |= RTF_REJECT;
685 break;
686 case K_BLACKHOLE:
687 flags |= RTF_BLACKHOLE;
688 break;
689 case K_PROTO1:
690 flags |= RTF_PROTO1;
691 break;
692 case K_PROTO2:
693 flags |= RTF_PROTO2;
694 break;
695 case K_CLONING:
696 flags |= RTF_CLONING;
697 break;
698 case K_XRESOLVE:
699 flags |= RTF_XRESOLVE;
700 break;
701 case K_STATIC:
702 flags |= RTF_STATIC;
703 break;
704 case K_IFA:
705 if (!--argc)
706 usage((char *)NULL);
707 (void) getaddr(RTA_IFA, *++argv, 0);
708 break;
709 case K_IFP:
710 if (!--argc)
711 usage((char *)NULL);
712 (void) getaddr(RTA_IFP, *++argv, 0);
713 break;
714 case K_GENMASK:
715 if (!--argc)
716 usage((char *)NULL);
717 (void) getaddr(RTA_GENMASK, *++argv, 0);
718 break;
719 case K_GATEWAY:
720 if (!--argc)
721 usage((char *)NULL);
722 (void) getaddr(RTA_GATEWAY, *++argv, 0);
723 break;
724 case K_DST:
725 if (!--argc)
726 usage((char *)NULL);
727 ishost = getaddr(RTA_DST, *++argv, &hp);
728 dest = *argv;
729 break;
730 case K_NETMASK:
731 if (!--argc)
732 usage((char *)NULL);
733 (void) getaddr(RTA_NETMASK, *++argv, 0);
734 /* FALLTHROUGH */
735 case K_NET:
736 forcenet++;
737 break;
738 case K_PREFIXLEN:
739 if (!--argc)
740 usage((char *)NULL);
741 if (prefixlen(*++argv) == -1) {
742 forcenet = 0;
743 ishost = 1;
744 } else {
745 forcenet = 1;
746 ishost = 0;
747 }
748 break;
749 case K_MTU:
750 case K_HOPCOUNT:
751 case K_EXPIRE:
752 case K_RECVPIPE:
753 case K_SENDPIPE:
754 case K_SSTHRESH:
755 case K_RTT:
756 case K_RTTVAR:
757 if (!--argc)
758 usage((char *)NULL);
759 set_metric(*++argv, key);
760 break;
761 default:
762 usage(1+*argv);
763 }
764 } else {
765 if ((rtm_addrs & RTA_DST) == 0) {
766 dest = *argv;
767 ishost = getaddr(RTA_DST, *argv, &hp);
768 } else if ((rtm_addrs & RTA_GATEWAY) == 0) {
769 gateway = *argv;
770 (void) getaddr(RTA_GATEWAY, *argv, &hp);
771 } else {
772 (void) getaddr(RTA_NETMASK, *argv, 0);
773 }
774 }
775 }
776 if (forcehost) {
777 ishost = 1;
778 #ifdef INET6
779 if (af == AF_INET6) {
780 rtm_addrs &= ~RTA_NETMASK;
781 memset((void *)&so_mask, 0, sizeof(so_mask));
782 }
783 #endif
784 }
785 if (forcenet)
786 ishost = 0;
787 flags |= RTF_UP;
788 if (ishost)
789 flags |= RTF_HOST;
790 if (iflag == 0)
791 flags |= RTF_GATEWAY;
792 if (so_mask.sin.sin_family == AF_INET) {
793 // make sure the mask is contiguous
794 long i;
795 for (i = 0; i < 32; i++)
796 if (((so_mask.sin.sin_addr.s_addr) & ntohl((1 << i))) != 0)
797 break;
798 for (; i < 32; i++)
799 if (((so_mask.sin.sin_addr.s_addr) & ntohl((1 << i))) == 0)
800 errx(EX_NOHOST, "invalid mask: %s", inet_ntoa(so_mask.sin.sin_addr));
801 }
802 for (attempts = 1; ; attempts++) {
803 errno = 0;
804 if ((ret = rtmsg(*cmd, flags)) == 0)
805 break;
806 if (errno != ENETUNREACH && errno != ESRCH)
807 break;
808 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) {
809 hp->h_addr_list++;
810 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr,
811 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr)));
812 } else
813 break;
814 }
815 if (*cmd == 'g')
816 exit(0);
817 oerrno = errno;
818 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest);
819 if (*gateway) {
820 (void) printf(": gateway %s", gateway);
821 if (attempts > 1 && ret == 0 && af == AF_INET)
822 (void) printf(" (%s)",
823 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr));
824 }
825 if (ret == 0)
826 (void) printf("\n");
827 else {
828 switch (oerrno) {
829 case ESRCH:
830 err = "not in table";
831 break;
832 case EBUSY:
833 err = "entry in use";
834 break;
835 case ENOBUFS:
836 err = "routing table overflow";
837 break;
838 default:
839 err = strerror(oerrno);
840 break;
841 }
842 (void) printf(": %s\n", err);
843 }
844 }
845
846 void
847 inet_makenetandmask(net, sin, bits)
848 u_long net, bits;
849 register struct sockaddr_in *sin;
850 {
851 u_long addr, mask = 0;
852 register char *cp;
853
854 rtm_addrs |= RTA_NETMASK;
855 if (bits) {
856 addr = net;
857 mask = 0xffffffff << (32 - bits);
858 } else if (net == 0)
859 mask = addr = 0;
860 else if (net < 128) {
861 addr = net << IN_CLASSA_NSHIFT;
862 mask = IN_CLASSA_NET;
863 } else if (net < 65536) {
864 addr = net << IN_CLASSB_NSHIFT;
865 mask = IN_CLASSB_NET;
866 } else if (net < 16777216L) {
867 addr = net << IN_CLASSC_NSHIFT;
868 mask = IN_CLASSC_NET;
869 } else {
870 addr = net;
871 if ((addr & IN_CLASSA_HOST) == 0)
872 mask = IN_CLASSA_NET;
873 else if ((addr & IN_CLASSB_HOST) == 0)
874 mask = IN_CLASSB_NET;
875 else if ((addr & IN_CLASSC_HOST) == 0)
876 mask = IN_CLASSC_NET;
877 else
878 mask = -1;
879 }
880 sin->sin_addr.s_addr = htonl(addr);
881 sin = &so_mask.sin;
882 sin->sin_addr.s_addr = htonl(mask);
883 sin->sin_len = 0;
884 sin->sin_family = 0;
885 cp = (char *)(&sin->sin_addr + 1);
886 while (*--cp == 0 && cp > (char *)sin)
887 ;
888 sin->sin_len = 1 + cp - (char *)sin;
889 }
890
891 /*
892 * Interpret an argument as a network address of some kind,
893 * returning 1 if a host address, 0 if a network address.
894 */
895 int
896 getaddr(which, s, hpp)
897 int which;
898 char *s;
899 struct hostent **hpp;
900 {
901 register sup su;
902 struct hostent *hp;
903 struct netent *np;
904 u_long val;
905 char *q;
906 int afamily; /* local copy of af so we can change it */
907
908 if (af == 0) {
909 af = AF_INET;
910 aflen = sizeof(struct sockaddr_in);
911 }
912 afamily = af;
913 rtm_addrs |= which;
914 switch (which) {
915 case RTA_DST:
916 su = &so_dst;
917 break;
918 case RTA_GATEWAY:
919 su = &so_gate;
920 if (iflag) {
921 struct ifaddrs *ifap, *ifa;
922 struct sockaddr_dl *sdl = NULL;
923
924 if (getifaddrs(&ifap))
925 err(1, "getifaddrs");
926
927 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
928 if (ifa->ifa_addr->sa_family != AF_LINK)
929 continue;
930
931 if (strcmp(s, ifa->ifa_name))
932 continue;
933
934 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
935 }
936 /* If we found it, then use it */
937 if (sdl) {
938 /*
939 * Copy is safe since we have a
940 * sockaddr_storage member in sockunion{}.
941 * Note that we need to copy before calling
942 * freeifaddrs().
943 */
944 memcpy(&su->sdl, sdl, sdl->sdl_len);
945 }
946 freeifaddrs(ifap);
947 if (sdl)
948 return(1);
949 }
950 break;
951 case RTA_NETMASK:
952 su = &so_mask;
953 break;
954 case RTA_GENMASK:
955 su = &so_genmask;
956 break;
957 case RTA_IFP:
958 su = &so_ifp;
959 afamily = AF_LINK;
960 break;
961 case RTA_IFA:
962 su = &so_ifa;
963 break;
964 default:
965 usage("internal error");
966 /*NOTREACHED*/
967 }
968 su->sa.sa_len = aflen;
969 su->sa.sa_family = afamily; /* cases that don't want it have left already */
970 if (strcmp(s, "default") == 0) {
971 /*
972 * Default is net 0.0.0.0/0
973 */
974 switch (which) {
975 case RTA_DST:
976 forcenet++;
977 /* bzero(su, sizeof(*su)); *//* for readability */
978 (void) getaddr(RTA_NETMASK, s, 0);
979 break;
980 case RTA_NETMASK:
981 case RTA_GENMASK:
982 /* bzero(su, sizeof(*su)); *//* for readability */
983 break;
984 }
985 return (0);
986 }
987 switch (afamily) {
988 #ifdef INET6
989 case AF_INET6:
990 {
991 struct addrinfo hints, *res;
992
993 memset(&hints, 0, sizeof(hints));
994 hints.ai_family = afamily; /*AF_INET6*/
995 hints.ai_flags = AI_NUMERICHOST;
996 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
997 if (getaddrinfo(s, "0", &hints, &res) != 0 ||
998 res->ai_family != AF_INET6 ||
999 res->ai_addrlen != sizeof(su->sin6)) {
1000 (void) fprintf(stderr, "%s: bad value\n", s);
1001 exit(1);
1002 }
1003 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6));
1004 #ifdef __KAME__
1005 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) ||
1006 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) &&
1007 su->sin6.sin6_scope_id) {
1008 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] =
1009 htons(su->sin6.sin6_scope_id);
1010 su->sin6.sin6_scope_id = 0;
1011 }
1012 #endif
1013 freeaddrinfo(res);
1014 return (0);
1015 }
1016 #endif /* INET6 */
1017
1018 #ifdef NS
1019 case AF_NS:
1020 if (which == RTA_DST) {
1021 extern short ns_bh[3];
1022 struct sockaddr_ns *sms = &(so_mask.sns);
1023 bzero((char *)sms, sizeof(*sms));
1024 sms->sns_family = 0;
1025 sms->sns_len = 6;
1026 sms->sns_addr.x_net = *(union ns_net *)ns_bh;
1027 rtm_addrs |= RTA_NETMASK;
1028 }
1029 su->sns.sns_addr = ns_addr(s);
1030 return (!ns_nullhost(su->sns.sns_addr));
1031 #endif
1032
1033
1034 #ifndef __APPLE__
1035 case AF_APPLETALK:
1036 if (!atalk_aton(s, &su->sat.sat_addr))
1037 errx(EX_NOHOST, "bad address: %s", s);
1038 rtm_addrs |= RTA_NETMASK;
1039 return(forcehost || su->sat.sat_addr.s_node != 0);
1040 #endif
1041
1042 case AF_LINK:
1043 link_addr(s, &su->sdl);
1044 return (1);
1045
1046
1047 case PF_ROUTE:
1048 su->sa.sa_len = sizeof(*su);
1049 sockaddr(s, &su->sa);
1050 return (1);
1051
1052 case AF_INET:
1053 default:
1054 break;
1055 }
1056
1057 if (hpp == NULL)
1058 hpp = &hp;
1059 *hpp = NULL;
1060
1061 q = strchr(s,'/');
1062 if (q && which == RTA_DST) {
1063 *q = '\0';
1064 if ((val = inet_addr(s)) != INADDR_NONE) {
1065 inet_makenetandmask(
1066 ntohl(val), &su->sin, strtoul(q+1, 0, 0));
1067 return (0);
1068 }
1069 *q = '/';
1070 }
1071 if ((which != RTA_DST || forcenet == 0) &&
1072 (val = inet_addr(s)) != INADDR_NONE) {
1073 su->sin.sin_addr.s_addr = val;
1074 if (which != RTA_DST ||
1075 inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
1076 return (1);
1077 else {
1078 val = ntohl(val);
1079 goto netdone;
1080 }
1081 }
1082 if (which == RTA_DST && forcehost == 0 &&
1083 ((val = inet_network(s)) != INADDR_NONE ||
1084 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) {
1085 netdone:
1086 inet_makenetandmask(val, &su->sin, 0);
1087 return (0);
1088 }
1089 hp = gethostbyname(s);
1090 if (hp) {
1091 *hpp = hp;
1092 su->sin.sin_family = hp->h_addrtype;
1093 bcopy(hp->h_addr, (char *)&su->sin.sin_addr,
1094 MIN(hp->h_length, sizeof(su->sin.sin_addr)));
1095 return (1);
1096 }
1097 errx(EX_NOHOST, "bad address: %s", s);
1098 }
1099
1100 int
1101 prefixlen(s)
1102 char *s;
1103 {
1104 int len = atoi(s), q, r;
1105 int max;
1106 char *p;
1107
1108 rtm_addrs |= RTA_NETMASK;
1109 switch (af) {
1110 #ifdef INET6
1111 case AF_INET6:
1112 max = 128;
1113 p = (char *)&so_mask.sin6.sin6_addr;
1114 break;
1115 #endif
1116 case AF_INET:
1117 max = 32;
1118 p = (char *)&so_mask.sin.sin_addr;
1119 break;
1120 default:
1121 (void) fprintf(stderr, "prefixlen not supported in this af\n");
1122 exit(1);
1123 /*NOTREACHED*/
1124 }
1125
1126 if (len < 0 || max < len) {
1127 (void) fprintf(stderr, "%s: bad value\n", s);
1128 exit(1);
1129 }
1130
1131 q = len >> 3;
1132 r = len & 7;
1133 so_mask.sa.sa_family = af;
1134 so_mask.sa.sa_len = aflen;
1135 memset((void *)p, 0, max / 8);
1136 if (q > 0)
1137 memset((void *)p, 0xff, q);
1138 if (r > 0)
1139 *((u_char *)p + q) = (0xff00 >> r) & 0xff;
1140 if (len == max)
1141 return -1;
1142 else
1143 return len;
1144 }
1145
1146 #ifdef NS
1147 short ns_nullh[] = {0,0,0};
1148 short ns_bh[] = {-1,-1,-1};
1149
1150 char *
1151 ns_print(sns)
1152 struct sockaddr_ns *sns;
1153 {
1154 struct ns_addr work;
1155 union { union ns_net net_e; u_long long_e; } net;
1156 u_short port;
1157 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25];
1158 char *host = "";
1159 register char *p;
1160 register u_char *q;
1161
1162 work = sns->sns_addr;
1163 port = ntohs(work.x_port);
1164 work.x_port = 0;
1165 net.net_e = work.x_net;
1166 if (ns_nullhost(work) && net.long_e == 0) {
1167 if (!port)
1168 return ("*.*");
1169 (void) sprintf(mybuf, "*.%XH", port);
1170 return (mybuf);
1171 }
1172
1173 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0)
1174 host = "any";
1175 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0)
1176 host = "*";
1177 else {
1178 q = work.x_host.c_host;
1179 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH",
1180 q[0], q[1], q[2], q[3], q[4], q[5]);
1181 for (p = chost; *p == '0' && p < chost + 12; p++)
1182 /* void */;
1183 host = p;
1184 }
1185 if (port)
1186 (void) sprintf(cport, ".%XH", htons(port));
1187 else
1188 *cport = 0;
1189
1190 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s",
1191 (unsigned long)ntohl(net.long_e),
1192 host, cport);
1193 return (mybuf);
1194 }
1195 #endif
1196
1197 void
1198 interfaces()
1199 {
1200 size_t needed;
1201 int mib[6];
1202 char *buf, *lim, *next;
1203 register struct rt_msghdr *rtm;
1204
1205 mib[0] = CTL_NET;
1206 mib[1] = PF_ROUTE;
1207 mib[2] = 0; /* protocol */
1208 mib[3] = 0; /* wildcard address family */
1209 mib[4] = NET_RT_IFLIST;
1210 mib[5] = 0; /* no flags */
1211 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
1212 err(EX_OSERR, "route-sysctl-estimate");
1213 if ((buf = malloc(needed)) == NULL)
1214 errx(EX_OSERR, "malloc failed");
1215 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
1216 err(EX_OSERR, "actual retrieval of interface table");
1217 lim = buf + needed;
1218 for (next = buf; next < lim; next += rtm->rtm_msglen) {
1219 rtm = (struct rt_msghdr *)next;
1220 print_rtmsg(rtm, rtm->rtm_msglen);
1221 }
1222 }
1223
1224 void
1225 monitor()
1226 {
1227 int n;
1228 char msg[2048];
1229
1230 verbose = 1;
1231 if (debugonly) {
1232 interfaces();
1233 exit(0);
1234 }
1235 for(;;) {
1236 time_t now;
1237 n = read(s, msg, 2048);
1238 now = time(NULL);
1239 (void) printf("\ngot message of size %d on %s", n, ctime(&now));
1240 print_rtmsg((struct rt_msghdr *)msg, n);
1241 }
1242 }
1243
1244 struct {
1245 struct rt_msghdr m_rtm;
1246 char m_space[512];
1247 } m_rtmsg;
1248
1249 int
1250 rtmsg(cmd, flags)
1251 int cmd, flags;
1252 {
1253 static int seq;
1254 int rlen;
1255 register char *cp = m_rtmsg.m_space;
1256 register int l;
1257
1258 #define NEXTADDR(w, u) \
1259 if (rtm_addrs & (w)) {\
1260 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\
1261 if (verbose) sodump(&(u),"u");\
1262 }
1263
1264 errno = 0;
1265 bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
1266 if (cmd == 'a')
1267 cmd = RTM_ADD;
1268 else if (cmd == 'c')
1269 cmd = RTM_CHANGE;
1270 else if (cmd == 'g') {
1271 cmd = RTM_GET;
1272 if (so_ifp.sa.sa_family == 0) {
1273 so_ifp.sa.sa_family = AF_LINK;
1274 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
1275 rtm_addrs |= RTA_IFP;
1276 }
1277 } else
1278 cmd = RTM_DELETE;
1279 #define rtm m_rtmsg.m_rtm
1280 rtm.rtm_type = cmd;
1281 rtm.rtm_flags = flags;
1282 rtm.rtm_version = RTM_VERSION;
1283 rtm.rtm_seq = ++seq;
1284 rtm.rtm_addrs = rtm_addrs;
1285 rtm.rtm_rmx = rt_metrics;
1286 rtm.rtm_inits = rtm_inits;
1287
1288 if (rtm_addrs & RTA_NETMASK)
1289 mask_addr();
1290 NEXTADDR(RTA_DST, so_dst);
1291 NEXTADDR(RTA_GATEWAY, so_gate);
1292 NEXTADDR(RTA_NETMASK, so_mask);
1293 NEXTADDR(RTA_GENMASK, so_genmask);
1294 NEXTADDR(RTA_IFP, so_ifp);
1295 NEXTADDR(RTA_IFA, so_ifa);
1296 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
1297 if (verbose)
1298 print_rtmsg(&rtm, l);
1299 if (debugonly)
1300 return (0);
1301 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
1302 warn("writing to routing socket");
1303 return (-1);
1304 }
1305 if (cmd == RTM_GET) {
1306 do {
1307 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
1308 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
1309 if (l < 0)
1310 warn("read from routing socket");
1311 else
1312 print_getmsg(&rtm, l);
1313 }
1314 #undef rtm
1315 return (0);
1316 }
1317
1318 void
1319 mask_addr()
1320 {
1321 int olen = so_mask.sa.sa_len;
1322 register char *cp1 = olen + (char *)&so_mask, *cp2;
1323
1324 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; )
1325 if (*--cp1 != 0) {
1326 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask;
1327 break;
1328 }
1329 if ((rtm_addrs & RTA_DST) == 0)
1330 return;
1331 switch (so_dst.sa.sa_family) {
1332 #ifdef NS
1333 case AF_NS:
1334 #endif
1335 case AF_INET:
1336 #ifdef INET6
1337 case AF_INET6:
1338 #endif
1339 case AF_APPLETALK:
1340 case 0:
1341 return;
1342 }
1343 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst;
1344 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst;
1345 while (cp2 > cp1)
1346 *--cp2 = 0;
1347 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask;
1348 while (cp1 > so_dst.sa.sa_data)
1349 *--cp1 &= *--cp2;
1350 }
1351
1352 char *msgtypes[] = {
1353 "",
1354 "RTM_ADD: Add Route",
1355 "RTM_DELETE: Delete Route",
1356 "RTM_CHANGE: Change Metrics or flags",
1357 "RTM_GET: Report Metrics",
1358 "RTM_LOSING: Kernel Suspects Partitioning",
1359 "RTM_REDIRECT: Told to use different route",
1360 "RTM_MISS: Lookup failed on this address",
1361 "RTM_LOCK: fix specified metrics",
1362 "RTM_OLDADD: caused by SIOCADDRT",
1363 "RTM_OLDDEL: caused by SIOCDELRT",
1364 "RTM_RESOLVE: Route created by cloning",
1365 "RTM_NEWADDR: address being added to iface",
1366 "RTM_DELADDR: address being removed from iface",
1367 "RTM_IFINFO: iface status change",
1368 "RTM_NEWMADDR: new multicast group membership on iface",
1369 "RTM_DELMADDR: multicast group membership removed from iface",
1370 0,
1371 };
1372
1373 char metricnames[] =
1374 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount"
1375 "\1mtu";
1376 char routeflags[] =
1377 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT"
1378 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016"
1379 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE"
1380 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST";
1381 char ifnetflags[] =
1382 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1383 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1384 "\017LINK2\020MULTICAST";
1385 char addrnames[] =
1386 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
1387
1388 void
1389 print_rtmsg(rtm, msglen)
1390 register struct rt_msghdr *rtm;
1391 int msglen;
1392 {
1393 struct if_msghdr *ifm;
1394 struct ifa_msghdr *ifam;
1395 #ifdef RTM_NEWMADDR
1396 struct ifma_msghdr *ifmam;
1397 #endif
1398
1399 if (verbose == 0)
1400 return;
1401 if (rtm->rtm_version != RTM_VERSION) {
1402 (void) printf("routing message version %d not understood\n",
1403 rtm->rtm_version);
1404 return;
1405 }
1406 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen);
1407 switch (rtm->rtm_type) {
1408 case RTM_IFINFO:
1409 ifm = (struct if_msghdr *)rtm;
1410 (void) printf("if# %d, flags:", ifm->ifm_index);
1411 bprintf(stdout, ifm->ifm_flags, ifnetflags);
1412 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs);
1413 break;
1414 case RTM_NEWADDR:
1415 case RTM_DELADDR:
1416 ifam = (struct ifa_msghdr *)rtm;
1417 (void) printf("metric %d, flags:", ifam->ifam_metric);
1418 bprintf(stdout, ifam->ifam_flags, routeflags);
1419 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs);
1420 break;
1421 #ifdef RTM_NEWMADDR
1422 case RTM_NEWMADDR:
1423 case RTM_DELMADDR:
1424 ifmam = (struct ifma_msghdr *)rtm;
1425 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs);
1426 break;
1427 #endif
1428 default:
1429 (void) printf("pid: %ld, seq %d, errno %d, flags:",
1430 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1431 bprintf(stdout, rtm->rtm_flags, routeflags);
1432 pmsg_common(rtm);
1433 }
1434 }
1435
1436 void
1437 print_getmsg(rtm, msglen)
1438 register struct rt_msghdr *rtm;
1439 int msglen;
1440 {
1441 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
1442 struct sockaddr_dl *ifp = NULL;
1443 register struct sockaddr *sa;
1444 register char *cp;
1445 register int i;
1446
1447 (void) printf(" route to: %s\n", routename(&so_dst));
1448 if (rtm->rtm_version != RTM_VERSION) {
1449 warnx("routing message version %d not understood",
1450 rtm->rtm_version);
1451 return;
1452 }
1453 if (rtm->rtm_msglen > msglen) {
1454 warnx("message length mismatch, in packet %d, returned %d",
1455 rtm->rtm_msglen, msglen);
1456 }
1457 if (rtm->rtm_errno) {
1458 errno = rtm->rtm_errno;
1459 warn("message indicates error %d", errno);
1460 return;
1461 }
1462 cp = ((char *)(rtm + 1));
1463 if (rtm->rtm_addrs)
1464 for (i = 1; i; i <<= 1)
1465 if (i & rtm->rtm_addrs) {
1466 sa = (struct sockaddr *)cp;
1467 switch (i) {
1468 case RTA_DST:
1469 dst = sa;
1470 break;
1471 case RTA_GATEWAY:
1472 gate = sa;
1473 break;
1474 case RTA_NETMASK:
1475 mask = sa;
1476 break;
1477 case RTA_IFP:
1478 if (sa->sa_family == AF_LINK &&
1479 ((struct sockaddr_dl *)sa)->sdl_nlen)
1480 ifp = (struct sockaddr_dl *)sa;
1481 break;
1482 }
1483 ADVANCE(cp, sa);
1484 }
1485 if (dst && mask)
1486 mask->sa_family = dst->sa_family; /* XXX */
1487 if (dst)
1488 (void)printf("destination: %s\n", routename(dst));
1489 if (mask) {
1490 int savenflag = nflag;
1491
1492 nflag = 1;
1493 (void)printf(" mask: %s\n", routename(mask));
1494 nflag = savenflag;
1495 }
1496 if (gate && rtm->rtm_flags & RTF_GATEWAY)
1497 (void)printf(" gateway: %s\n", routename(gate));
1498 if (ifp)
1499 (void)printf(" interface: %.*s\n",
1500 ifp->sdl_nlen, ifp->sdl_data);
1501 (void)printf(" flags: ");
1502 bprintf(stdout, rtm->rtm_flags, routeflags);
1503
1504 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1505 #define msec(u) (((u) + 500) / 1000) /* usec to msec */
1506
1507 (void) printf("\n%s\n", "\
1508 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire");
1509 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1510 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1511 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1512 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1513 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR));
1514 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT));
1515 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
1516 if (rtm->rtm_rmx.rmx_expire)
1517 rtm->rtm_rmx.rmx_expire -= time(0);
1518 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
1519 #undef lock
1520 #undef msec
1521 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
1522 if (verbose)
1523 pmsg_common(rtm);
1524 else if (rtm->rtm_addrs &~ RTA_IGN) {
1525 (void) printf("sockaddrs: ");
1526 bprintf(stdout, rtm->rtm_addrs, addrnames);
1527 putchar('\n');
1528 }
1529 #undef RTA_IGN
1530 }
1531
1532 void
1533 pmsg_common(rtm)
1534 register struct rt_msghdr *rtm;
1535 {
1536 (void) printf("\nlocks: ");
1537 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
1538 (void) printf(" inits: ");
1539 bprintf(stdout, rtm->rtm_inits, metricnames);
1540 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs);
1541 }
1542
1543 void
1544 pmsg_addrs(cp, addrs)
1545 char *cp;
1546 int addrs;
1547 {
1548 register struct sockaddr *sa;
1549 int i;
1550
1551 if (addrs == 0) {
1552 (void) putchar('\n');
1553 return;
1554 }
1555 (void) printf("\nsockaddrs: ");
1556 bprintf(stdout, addrs, addrnames);
1557 (void) putchar('\n');
1558 for (i = 1; i; i <<= 1)
1559 if (i & addrs) {
1560 sa = (struct sockaddr *)cp;
1561 (void) printf(" %s", routename(sa));
1562 ADVANCE(cp, sa);
1563 }
1564 (void) putchar('\n');
1565 (void) fflush(stdout);
1566 }
1567
1568 void
1569 bprintf(fp, b, s)
1570 register FILE *fp;
1571 register int b;
1572 register u_char *s;
1573 {
1574 register int i;
1575 int gotsome = 0;
1576
1577 if (b == 0)
1578 return;
1579 while ((i = *s++) != 0) {
1580 if (b & (1 << (i-1))) {
1581 if (gotsome == 0)
1582 i = '<';
1583 else
1584 i = ',';
1585 (void) putc(i, fp);
1586 gotsome = 1;
1587 for (; (i = *s) > 32; s++)
1588 (void) putc(i, fp);
1589 } else
1590 while (*s > 32)
1591 s++;
1592 }
1593 if (gotsome)
1594 (void) putc('>', fp);
1595 }
1596
1597 int
1598 keyword(cp)
1599 char *cp;
1600 {
1601 register struct keytab *kt = keywords;
1602
1603 while (kt->kt_cp && strcmp(kt->kt_cp, cp))
1604 kt++;
1605 return kt->kt_i;
1606 }
1607
1608 void
1609 sodump(su, which)
1610 register sup su;
1611 char *which;
1612 {
1613 switch (su->sa.sa_family) {
1614 case AF_LINK:
1615 (void) printf("%s: link %s; ",
1616 which, link_ntoa(&su->sdl));
1617 break;
1618 case AF_INET:
1619 (void) printf("%s: inet %s; ",
1620 which, inet_ntoa(su->sin.sin_addr));
1621 break;
1622 #ifndef __APPLE__
1623 case AF_APPLETALK:
1624 (void) printf("%s: atalk %s; ",
1625 which, atalk_ntoa(su->sat.sat_addr));
1626 break;
1627 #endif
1628 #ifdef NS
1629 case AF_NS:
1630 (void) printf("%s: xns %s; ",
1631 which, ns_ntoa(su->sns.sns_addr));
1632 break;
1633 #endif
1634 }
1635 (void) fflush(stdout);
1636 }
1637
1638 /* States*/
1639 #define VIRGIN 0
1640 #define GOTONE 1
1641 #define GOTTWO 2
1642 /* Inputs */
1643 #define DIGIT (4*0)
1644 #define END (4*1)
1645 #define DELIM (4*2)
1646
1647 void
1648 sockaddr(addr, sa)
1649 register char *addr;
1650 register struct sockaddr *sa;
1651 {
1652 register char *cp = (char *)sa;
1653 int size = sa->sa_len;
1654 char *cplim = cp + size;
1655 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
1656
1657 bzero(cp, size);
1658 cp++;
1659 do {
1660 if ((*addr >= '0') && (*addr <= '9')) {
1661 new = *addr - '0';
1662 } else if ((*addr >= 'a') && (*addr <= 'f')) {
1663 new = *addr - 'a' + 10;
1664 } else if ((*addr >= 'A') && (*addr <= 'F')) {
1665 new = *addr - 'A' + 10;
1666 } else if (*addr == 0)
1667 state |= END;
1668 else
1669 state |= DELIM;
1670 addr++;
1671 switch (state /* | INPUT */) {
1672 case GOTTWO | DIGIT:
1673 *cp++ = byte; /*FALLTHROUGH*/
1674 case VIRGIN | DIGIT:
1675 state = GOTONE; byte = new; continue;
1676 case GOTONE | DIGIT:
1677 state = GOTTWO; byte = new + (byte << 4); continue;
1678 default: /* | DELIM */
1679 state = VIRGIN; *cp++ = byte; byte = 0; continue;
1680 case GOTONE | END:
1681 case GOTTWO | END:
1682 *cp++ = byte; /* FALLTHROUGH */
1683 case VIRGIN | END:
1684 break;
1685 }
1686 break;
1687 } while (cp < cplim);
1688 sa->sa_len = cp - (char *)sa;
1689 }
1690
1691 #ifndef __APPLE__
1692 int
1693 atalk_aton(const char *text, struct at_addr *addr)
1694 {
1695 u_int net, node;
1696
1697 if (sscanf(text, "%u.%u", &net, &node) != 2
1698 || net > 0xffff || node > 0xff)
1699 return(0);
1700 addr->s_net = htons(net);
1701 addr->s_node = node;
1702 return(1);
1703 }
1704
1705 char *
1706 atalk_ntoa(struct at_addr at)
1707 {
1708 static char buf[20];
1709
1710 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);
1711 return(buf);
1712 }
1713 #endif
mirror of network_cmds