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Keep track of the number of buffers undgoing IO, and include that number
[dfdiff.git] / sbin / route / route.c
blobfa38522a683330e51dad676628d3a587091b5ac5
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.
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 $
36 * $DragonFly: src/sbin/route/route.c,v 1.16 2007/09/10 15:13:55 dillon Exp $
37 */
38
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
58 #include <ctype.h>
59 #include <err.h>
60 #include <errno.h>
61 #include <paths.h>
62 #include <stdio.h>
63 #include <stdlib.h>
64 #include <string.h>
65 #include <sysexits.h>
66 #include <unistd.h>
67 #include <ifaddrs.h>
68
69 #include "extern.h"
70 #include "keywords.h"
71
72 union sockunion {
73 struct sockaddr sa;
74 struct sockaddr_in sin;
75 #ifdef INET6
76 struct sockaddr_in6 sin6;
77 #endif
78 struct sockaddr_at sat;
79 #ifdef NS
80 struct sockaddr_ns sns;
81 #endif
82 struct sockaddr_dl sdl;
83 struct sockaddr_inarp sinarp;
84 struct sockaddr_storage ss; /* added to avoid memory overrun */
85 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp;
86
87 typedef union sockunion *sup;
88
89 int nflag, wflag;
90 int cpuflag = -1;
91
92 static struct ortentry route;
93 static struct rt_metrics rt_metrics;
94 static int pid, rtm_addrs;
95 static int s;
96 static int forcehost, forcenet, af, qflag, tflag;
97 static int iflag, verbose, aflen = sizeof(struct sockaddr_in);
98 static int locking, lockrest, debugonly;
99 static u_long rtm_inits;
100 static uid_t uid;
101 #ifdef NS
102 static short ns_bh[] = {-1,-1,-1};
103 #endif
104
105 static int atalk_aton(const char *, struct at_addr *);
106 static char *atalk_ntoa(struct at_addr);
107 static void flushroutes(int, char **);
108 static void set_metric(char *, int);
109 static void newroute(int, char **);
110 static void inet_makenetandmask(u_long, struct sockaddr_in *, u_long);
111 static void interfaces(void);
112 static void monitor(void);
113 static void sockaddr(char *, struct sockaddr *);
114 static void sodump(sup, const char *);
115 static void bprintf(FILE *, int, u_char *);
116 static void print_getmsg(struct rt_msghdr *, int);
117 static void print_rtmsg(struct rt_msghdr *, int);
118 static void pmsg_common(struct rt_msghdr *);
119 static void pmsg_addrs(char *, int);
120 static void mask_addr(void);
121 static int getaddr(int, char *, struct hostent **);
122 static int rtmsg(int, int);
123 static int prefixlen(const char *);
124 #ifdef INET6
125 static int inet6_makenetandmask(struct sockaddr_in6 *, const char *);
126 #endif
127
128 void
129 usage(const char *cp)
130 {
131 if (cp != NULL)
132 warnx("bad keyword: %s", cp);
133 fprintf(stderr, "usage: route [-dnqtv] command [[modifiers] args]\n");
134 exit(EX_USAGE);
135 /* NOTREACHED */
136 }
137
138 #define ROUNDUP(a) \
139 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
140 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
141
142 int
143 main(int argc, char **argv)
144 {
145 int ch;
146
147 if (argc < 2)
148 usage((char *)NULL);
149
150 while ((ch = getopt(argc, argv, "c:wnqdtv")) != -1)
151 switch(ch) {
152 case 'c':
153 cpuflag = strtol(optarg, NULL, 0);
154 break;
155 case 'w':
156 wflag = 1;
157 break;
158 case 'n':
159 nflag = 1;
160 break;
161 case 'q':
162 qflag = 1;
163 break;
164 case 'v':
165 verbose = 1;
166 break;
167 case 't':
168 tflag = 1;
169 break;
170 case 'd':
171 debugonly = 1;
172 break;
173 case '?':
174 default:
175 usage((char *)NULL);
176 }
177 argc -= optind;
178 argv += optind;
179
180 pid = getpid();
181 uid = geteuid();
182 if (tflag)
183 s = open(_PATH_DEVNULL, O_WRONLY, 0);
184 else
185 s = socket(PF_ROUTE, SOCK_RAW, 0);
186 if (s < 0)
187 err(EX_OSERR, "socket");
188 if (*argv != NULL)
189 switch (keyword(*argv)) {
190 case K_GET:
191 uid = 0;
192 /* FALLTHROUGH */
193
194 case K_CHANGE:
195 case K_ADD:
196 case K_DELETE:
197 newroute(argc, argv);
198 /* NOTREACHED */
199
200 case K_SHOW:
201 show(argc, argv);
202 return(0);
203
204 case K_MONITOR:
205 monitor();
206 /* NOTREACHED */
207
208 case K_FLUSH:
209 flushroutes(argc, argv);
210 exit(0);
211 /* NOTREACHED */
212 }
213 usage(*argv);
214 /* NOTREACHED */
215 }
216
217 /*
218 * Purge all entries in the routing tables not
219 * associated with network interfaces.
220 */
221 static void
222 flushroutes(int argc, char **argv)
223 {
224 size_t needed;
225 int mib[7], rlen, seqno;
226 int miblen;
227 char *buf, *next, *lim;
228 struct rt_msghdr *rtm;
229
230 if (uid != 0) {
231 errx(EX_NOPERM, "must be root to alter routing table");
232 }
233 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
234 if (argc > 1) {
235 argv++;
236 if (argc == 2 && **argv == '-')
237 switch (keyword(*argv + 1)) {
238 case K_INET:
239 af = AF_INET;
240 break;
241 #ifdef INET6
242 case K_INET6:
243 af = AF_INET6;
244 break;
245 #endif
246 case K_ATALK:
247 af = AF_APPLETALK;
248 break;
249 #ifdef NS
250 case K_XNS:
251 af = AF_NS;
252 break;
253 #endif
254 case K_LINK:
255 af = AF_LINK;
256 break;
257 default:
258 goto bad;
259 } else
260 bad: usage(*argv);
261 }
262 mib[0] = CTL_NET;
263 mib[1] = PF_ROUTE;
264 mib[2] = 0; /* protocol */
265 mib[3] = 0; /* wildcard address family */
266 mib[4] = NET_RT_DUMP;
267 mib[5] = 0; /* no flags */
268 if (cpuflag >= 0) {
269 mib[6] = cpuflag;
270 miblen = 7;
271 } else {
272 miblen = 6;
273 }
274 if (sysctl(mib, miblen, NULL, &needed, NULL, 0) < 0)
275 err(EX_OSERR, "route-sysctl-estimate");
276 if ((buf = malloc(needed)) == NULL)
277 errx(EX_OSERR, "malloc failed");
278 if (sysctl(mib, miblen, buf, &needed, NULL, 0) < 0)
279 err(EX_OSERR, "route-sysctl-get");
280 lim = buf + needed;
281 if (verbose)
282 printf("Examining routing table from sysctl\n");
283 seqno = 0; /* ??? */
284 for (next = buf; next < lim; next += rtm->rtm_msglen) {
285 rtm = (struct rt_msghdr *)next;
286 if (verbose)
287 print_rtmsg(rtm, rtm->rtm_msglen);
288 if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
289 continue;
290 if (af != 0) {
291 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
292
293 if (sa->sa_family != af)
294 continue;
295 }
296 if (debugonly)
297 continue;
298 rtm->rtm_type = RTM_DELETE;
299 rtm->rtm_seq = seqno;
300 rlen = write(s, next, rtm->rtm_msglen);
301 if (rlen < (int)rtm->rtm_msglen) {
302 warn("write to routing socket");
303 printf("got only %d for rlen\n", rlen);
304 break;
305 }
306 seqno++;
307 if (qflag)
308 continue;
309 if (verbose) {
310 print_rtmsg(rtm, rlen);
311 } else {
312 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
313 if (wflag) {
314 printf("%-20s ", rtm->rtm_flags & RTF_HOST ?
315 routename(sa) : netname(sa));
316 } else {
317 printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
318 routename(sa) : netname(sa));
319 }
320 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) +
321 (char *)sa);
322 if (wflag) {
323 printf("%-20s ", routename(sa));
324 } else {
325 printf("%-20.20s ", routename(sa));
326 }
327 printf("done\n");
328 }
329 }
330 }
331
332 char *
333 routename(struct sockaddr *sa)
334 {
335 const char *cp;
336 static char line[MAXHOSTNAMELEN + 1];
337 struct hostent *hp;
338 static char domain[MAXHOSTNAMELEN + 1];
339 static int first = 1;
340
341 if (first) {
342 first = 0;
343 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
344 (cp = strchr(domain, '.'))) {
345 domain[MAXHOSTNAMELEN] = '\0';
346 strcpy(domain, cp + 1);
347 } else
348 domain[0] = 0;
349 }
350
351 if (sa->sa_len == 0)
352 strcpy(line, "default");
353 else switch (sa->sa_family) {
354
355 case AF_INET:
356 { struct in_addr in;
357 in = ((struct sockaddr_in *)sa)->sin_addr;
358
359 cp = NULL;
360 if (in.s_addr == INADDR_ANY || sa->sa_len < 4)
361 cp = "default";
362 if (cp == NULL && !nflag) {
363 hp = gethostbyaddr((char *)&in, sizeof(struct in_addr),
364 AF_INET);
365 if (hp != NULL) {
366 char *cptr;
367 cptr = strchr(hp->h_name, '.');
368 if (cptr != NULL && !wflag &&
369 strcmp(cptr + 1, domain) == 0)
370 *cptr = '\0';
371 cp = hp->h_name;
372 }
373 }
374 if (cp != NULL) {
375 strncpy(line, cp, sizeof(line) - 1);
376 line[sizeof(line) - 1] = '\0';
377 } else
378 sprintf(line, "%s", inet_ntoa(in));
379 break;
380 }
381
382 #ifdef INET6
383 case AF_INET6:
384 {
385 struct sockaddr_in6 sin6; /* use static var for safety */
386 int niflags = 0;
387 #ifdef NI_WITHSCOPEID
388 niflags = NI_WITHSCOPEID;
389 #endif
390
391 memset(&sin6, 0, sizeof(sin6));
392 memcpy(&sin6, sa, sa->sa_len);
393 sin6.sin6_len = sizeof(struct sockaddr_in6);
394 sin6.sin6_family = AF_INET6;
395 #ifdef __KAME__
396 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
397 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
398 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
399 sin6.sin6_scope_id == 0) {
400 sin6.sin6_scope_id =
401 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
402 sin6.sin6_addr.s6_addr[2] = 0;
403 sin6.sin6_addr.s6_addr[3] = 0;
404 }
405 #endif
406 if (nflag)
407 niflags |= NI_NUMERICHOST;
408 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
409 line, sizeof(line), NULL, 0, niflags) != 0)
410 strncpy(line, "invalid", sizeof(line));
411
412 return(line);
413 }
414 #endif
415
416 case AF_APPLETALK:
417 snprintf(line, sizeof(line), "atalk %s",
418 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
419 break;
420
421 #ifdef NS
422 case AF_NS:
423 return(ns_print((struct sockaddr_ns *)sa));
424 #endif
425
426 case AF_LINK:
427 return(link_ntoa((struct sockaddr_dl *)sa));
428
429 default:
430 {
431 /*
432 * Unknown address family; just render the raw
433 * data in sa->sa_data as hex values.
434 */
435 uint8_t *sp = (uint8_t *)sa->sa_data;
436 uint8_t *splim = (uint8_t *)sa + sa->sa_len;
437 char *cps = line + sprintf(line, "(%d)", sa->sa_family);
438 char *cpe = line + sizeof(line);
439
440 while (sp < splim && cps < cpe)
441 cps += snprintf(cps, cpe - cps, " %02x", *sp++);
442 break;
443 }
444 }
445 return(line);
446 }
447
448 /*
449 * Return the name of the network whose address is given.
450 * The address is assumed to be that of a net or subnet, not a host.
451 */
452 char *
453 netname(struct sockaddr *sa)
454 {
455 const char *cp = 0;
456 static char line[MAXHOSTNAMELEN + 1];
457 struct netent *np = 0;
458 u_long net, mask;
459 u_long i;
460 int subnetshift;
461
462 switch (sa->sa_family) {
463
464 case AF_INET:
465 { struct in_addr in;
466 in = ((struct sockaddr_in *)sa)->sin_addr;
467
468 i = in.s_addr = ntohl(in.s_addr);
469 if (in.s_addr == 0)
470 cp = "default";
471 else if (!nflag) {
472 if (IN_CLASSA(i)) {
473 mask = IN_CLASSA_NET;
474 subnetshift = 8;
475 } else if (IN_CLASSB(i)) {
476 mask = IN_CLASSB_NET;
477 subnetshift = 8;
478 } else {
479 mask = IN_CLASSC_NET;
480 subnetshift = 4;
481 }
482 /*
483 * If there are more bits than the standard mask
484 * would suggest, subnets must be in use.
485 * Guess at the subnet mask, assuming reasonable
486 * width subnet fields.
487 */
488 while (in.s_addr &~ mask)
489 mask = (long)mask >> subnetshift;
490 net = in.s_addr & mask;
491 while ((mask & 1) == 0)
492 mask >>= 1, net >>= 1;
493 np = getnetbyaddr(net, AF_INET);
494 if (np != NULL)
495 cp = np->n_name;
496 }
497 #define C(x) (unsigned)((x) & 0xff)
498 if (cp != NULL)
499 strncpy(line, cp, sizeof(line));
500 else if ((in.s_addr & 0xffffff) == 0)
501 sprintf(line, "%u", C(in.s_addr >> 24));
502 else if ((in.s_addr & 0xffff) == 0)
503 sprintf(line, "%u.%u", C(in.s_addr >> 24),
504 C(in.s_addr >> 16));
505 else if ((in.s_addr & 0xff) == 0)
506 sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
507 C(in.s_addr >> 16), C(in.s_addr >> 8));
508 else
509 sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
510 C(in.s_addr >> 16), C(in.s_addr >> 8),
511 C(in.s_addr));
512 #undef C
513 break;
514 }
515
516 #ifdef INET6
517 case AF_INET6:
518 {
519 struct sockaddr_in6 sin6; /* use static var for safety */
520 int niflags = 0;
521 #ifdef NI_WITHSCOPEID
522 niflags = NI_WITHSCOPEID;
523 #endif
524
525 memset(&sin6, 0, sizeof(sin6));
526 memcpy(&sin6, sa, sa->sa_len);
527 sin6.sin6_len = sizeof(struct sockaddr_in6);
528 sin6.sin6_family = AF_INET6;
529 #ifdef __KAME__
530 if (sa->sa_len == sizeof(struct sockaddr_in6) &&
531 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
532 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
533 sin6.sin6_scope_id == 0) {
534 sin6.sin6_scope_id =
535 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
536 sin6.sin6_addr.s6_addr[2] = 0;
537 sin6.sin6_addr.s6_addr[3] = 0;
538 }
539 #endif
540 if (nflag)
541 niflags |= NI_NUMERICHOST;
542 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
543 line, sizeof(line), NULL, 0, niflags) != 0)
544 strncpy(line, "invalid", sizeof(line));
545
546 return(line);
547 }
548 #endif
549
550 case AF_APPLETALK:
551 snprintf(line, sizeof(line), "atalk %s",
552 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
553 break;
554
555 #ifdef NS
556 case AF_NS:
557 return(ns_print((struct sockaddr_ns *)sa));
558 break;
559 #endif
560
561 case AF_LINK:
562 return(link_ntoa((struct sockaddr_dl *)sa));
563
564
565 default:
566 {
567 /*
568 * Unknown address family; just render the raw
569 * data in sa->sa_data as hex values.
570 */
571 uint8_t *sp = (uint8_t *)sa->sa_data;
572 uint8_t *splim = (uint8_t *)sa + sa->sa_len;
573 char *cps = line + sprintf(line, "af %d:", sa->sa_family);
574 char *cpe = line + sizeof(line);
575
576 while (sp < splim && cps < cpe)
577 cps += snprintf(cps, cpe - cps, " %02x", *sp++);
578 break;
579 }
580 }
581 return(line);
582 }
583
584 static void
585 set_metric(char *value, int key)
586 {
587 int flag = 0;
588 u_long noval, *valp = &noval;
589
590 switch (key) {
591 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
592 caseof(K_MTU, RTV_MTU, rmx_mtu);
593 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
594 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
595 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
596 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
597 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
598 caseof(K_RTT, RTV_RTT, rmx_rtt);
599 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
600 }
601 rtm_inits |= flag;
602 if (lockrest || locking)
603 rt_metrics.rmx_locks |= flag;
604 if (locking)
605 locking = 0;
606 *valp = atoi(value);
607 }
608
609 static void
610 newroute(int argc, char **argv)
611 {
612 char *cmd;
613 const char *err_str, *dest = "", *gateway = "";
614 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC;
615 int key;
616 struct hostent *hp = 0;
617
618 if (uid != 0) {
619 errx(EX_NOPERM, "must be root to alter routing table");
620 }
621 cmd = argv[0];
622 if (*cmd != 'g')
623 shutdown(s, SHUT_RD); /* Don't want to read back our messages */
624 while (--argc > 0) {
625 if (**(++argv)== '-') {
626 switch (key = keyword(1 + *argv)) {
627 case K_LINK:
628 af = AF_LINK;
629 aflen = sizeof(struct sockaddr_dl);
630 break;
631 case K_INET:
632 af = AF_INET;
633 aflen = sizeof(struct sockaddr_in);
634 break;
635 #ifdef INET6
636 case K_INET6:
637 af = AF_INET6;
638 aflen = sizeof(struct sockaddr_in6);
639 break;
640 #endif
641 case K_ATALK:
642 af = AF_APPLETALK;
643 aflen = sizeof(struct sockaddr_at);
644 break;
645 case K_SA:
646 af = PF_ROUTE;
647 aflen = sizeof(union sockunion);
648 break;
649 #ifdef NS
650 case K_XNS:
651 af = AF_NS;
652 aflen = sizeof(struct sockaddr_ns);
653 break;
654 #endif
655 case K_IFACE:
656 case K_INTERFACE:
657 iflag++;
658 break;
659 case K_NOSTATIC:
660 flags &= ~RTF_STATIC;
661 break;
662 case K_LLINFO:
663 flags |= RTF_LLINFO;
664 break;
665 case K_LOCK:
666 locking = 1;
667 break;
668 case K_LOCKREST:
669 lockrest = 1;
670 break;
671 case K_HOST:
672 forcehost++;
673 break;
674 case K_REJECT:
675 flags |= RTF_REJECT;
676 break;
677 case K_BLACKHOLE:
678 flags |= RTF_BLACKHOLE;
679 break;
680 case K_PROTO1:
681 flags |= RTF_PROTO1;
682 break;
683 case K_PROTO2:
684 flags |= RTF_PROTO2;
685 break;
686 case K_PROXY:
687 proxy = 1;
688 break;
689 case K_CLONING:
690 flags |= RTF_CLONING;
691 break;
692 case K_XRESOLVE:
693 flags |= RTF_XRESOLVE;
694 break;
695 case K_STATIC:
696 flags |= RTF_STATIC;
697 break;
698 case K_IFA:
699 if (--argc == 0)
700 usage((char *)NULL);
701 getaddr(RTA_IFA, *++argv, 0);
702 break;
703 case K_IFP:
704 if (--argc == 0)
705 usage((char *)NULL);
706 getaddr(RTA_IFP, *++argv, 0);
707 break;
708 case K_GENMASK:
709 if (--argc == 0)
710 usage((char *)NULL);
711 getaddr(RTA_GENMASK, *++argv, 0);
712 break;
713 case K_GATEWAY:
714 if (--argc == 0)
715 usage((char *)NULL);
716 getaddr(RTA_GATEWAY, *++argv, 0);
717 break;
718 case K_DST:
719 if (--argc == 0)
720 usage((char *)NULL);
721 ishost = getaddr(RTA_DST, *++argv, &hp);
722 dest = *argv;
723 break;
724 case K_NETMASK:
725 if (--argc == 0)
726 usage((char *)NULL);
727 getaddr(RTA_NETMASK, *++argv, 0);
728 /* FALLTHROUGH */
729 case K_NET:
730 forcenet++;
731 break;
732 case K_PREFIXLEN:
733 if (--argc == 0)
734 usage((char *)NULL);
735 if (prefixlen(*++argv) == -1) {
736 forcenet = 0;
737 ishost = 1;
738 } else {
739 forcenet = 1;
740 ishost = 0;
741 }
742 break;
743 case K_MTU:
744 case K_HOPCOUNT:
745 case K_EXPIRE:
746 case K_RECVPIPE:
747 case K_SENDPIPE:
748 case K_SSTHRESH:
749 case K_RTT:
750 case K_RTTVAR:
751 if (--argc == 0)
752 usage((char *)NULL);
753 set_metric(*++argv, key);
754 break;
755 default:
756 usage(1+*argv);
757 }
758 } else {
759 if ((rtm_addrs & RTA_DST) == 0) {
760 dest = *argv;
761 ishost = getaddr(RTA_DST, *argv, &hp);
762 } else if ((rtm_addrs & RTA_GATEWAY) == 0) {
763 gateway = *argv;
764 getaddr(RTA_GATEWAY, *argv, &hp);
765 } else {
766 getaddr(RTA_NETMASK, *argv, 0);
767 forcenet = 1;
768 }
769 }
770 }
771 if (forcehost) {
772 ishost = 1;
773 #ifdef INET6
774 if (af == AF_INET6) {
775 rtm_addrs &= ~RTA_NETMASK;
776 memset((void *)&so_mask, 0, sizeof(so_mask));
777 }
778 #endif
779 }
780 if (forcenet)
781 ishost = 0;
782 flags |= RTF_UP;
783 if (ishost)
784 flags |= RTF_HOST;
785 if (iflag == 0)
786 flags |= RTF_GATEWAY;
787 if (proxy) {
788 so_dst.sinarp.sin_other = SIN_PROXY;
789 flags |= RTF_ANNOUNCE;
790 }
791 for (attempts = 1; ; attempts++) {
792 errno = 0;
793 if ((ret = rtmsg(*cmd, flags)) == 0)
794 break;
795 if (errno != ENETUNREACH && errno != ESRCH)
796 break;
797 if (af == AF_INET && *gateway != '\0' &&
798 hp != NULL && hp->h_addr_list[1] != NULL) {
799 hp->h_addr_list++;
800 memmove(&so_gate.sin.sin_addr,
801 hp->h_addr_list[0],
802 MIN((size_t)hp->h_length,
803 sizeof(so_gate.sin.sin_addr)));
804 } else
805 break;
806 }
807 if (*cmd == 'g')
808 exit(0);
809 if (!qflag) {
810 oerrno = errno;
811 printf("%s %s %s", cmd, ishost? "host" : "net", dest);
812 if (*gateway != '\0') {
813 printf(": gateway %s", gateway);
814 if (attempts > 1 && ret == 0 && af == AF_INET)
815 printf(" (%s)",
816 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr));
817 }
818 if (ret == 0) {
819 printf("\n");
820 } else {
821 switch (oerrno) {
822 case ESRCH:
823 err_str = "not in table";
824 break;
825 case EBUSY:
826 err_str = "entry in use";
827 break;
828 case ENOBUFS:
829 err_str = "routing table overflow";
830 break;
831 case EDQUOT: /* handle recursion avoidance in
832 rt_setgate() */
833 err_str = "gateway uses the same route";
834 break;
835 default:
836 err_str = strerror(oerrno);
837 break;
838 }
839 printf(": %s\n", err_str);
840 }
841 }
842 exit(ret != 0);
843 }
844
845 static void
846 inet_makenetandmask(u_long net, struct sockaddr_in *in, u_long bits)
847 {
848 u_long addr, mask = 0;
849 char *cp;
850
851 rtm_addrs |= RTA_NETMASK;
852 if (net == 0)
853 mask = addr = 0;
854 else {
855 if (net <= 0xff)
856 addr = net << 24;
857 else if (net <= 0xffff)
858 addr = net << 16;
859 else if (net <= 0xffffff)
860 addr = net << 8;
861 else
862 addr = net;
863
864 if (bits)
865 mask = 0xffffffff << (32 - bits);
866 else {
867 if (IN_CLASSA(addr)) {
868 mask = IN_CLASSA_NET;
869 } else if (IN_CLASSB(addr)) {
870 mask = IN_CLASSB_NET;
871 } else if (IN_CLASSC(addr)) {
872 mask = IN_CLASSC_NET;
873 } else
874 mask = 0xffffffff;
875 }
876 addr &= mask;
877 }
878 in->sin_addr.s_addr = htonl(addr);
879 in = &so_mask.sin;
880 in->sin_addr.s_addr = htonl(mask);
881 in->sin_len = 0;
882 in->sin_family = 0;
883 cp = (char *)(&in->sin_addr + 1);
884 while (*--cp == 0 && cp > (char *)in)
885 ;
886 in->sin_len = 1 + cp - (char *)in;
887 }
888
889 #ifdef INET6
890 /*
891 * XXX the function may need more improvement...
892 */
893 static int
894 inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen)
895 {
896 struct in6_addr in6;
897
898 if (plen == NULL) {
899 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
900 sin6->sin6_scope_id == 0) {
901 plen = "0";
902 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
903 /* aggregatable global unicast - RFC2374 */
904 memset(&in6, 0, sizeof(in6));
905 if (memcmp(&sin6->sin6_addr.s6_addr[8],
906 &in6.s6_addr[8], 8) == 0)
907 plen = "64";
908 }
909 }
910
911 if (plen == NULL || strcmp(plen, "128") == 0)
912 return(1);
913 rtm_addrs |= RTA_NETMASK;
914 prefixlen(plen);
915 return(0);
916 }
917 #endif
918
919 /*
920 * Interpret an argument as a network address of some kind,
921 * returning 1 if a host address, 0 if a network address.
922 */
923 static int
924 getaddr(int which, char *str, struct hostent **hpp)
925 {
926 sup su;
927 struct hostent *hp;
928 struct netent *np;
929 u_long val;
930 char *q;
931 int afamily; /* local copy of af so we can change it */
932
933 if (af == 0) {
934 af = AF_INET;
935 aflen = sizeof(struct sockaddr_in);
936 }
937 afamily = af;
938 rtm_addrs |= which;
939 switch (which) {
940 case RTA_DST:
941 su = &so_dst;
942 break;
943 case RTA_GATEWAY:
944 su = &so_gate;
945 if (iflag) {
946 struct ifaddrs *ifap, *ifa;
947 struct sockaddr_dl *sdl = NULL;
948
949 if (getifaddrs(&ifap))
950 err(1, "getifaddrs");
951
952 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
953 if (ifa->ifa_addr->sa_family != AF_LINK)
954 continue;
955
956 if (strcmp(str, ifa->ifa_name) != 0)
957 continue;
958
959 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
960 }
961 /* If we found it, then use it */
962 if (sdl != NULL) {
963 /*
964 * Copy is safe since we have a
965 * sockaddr_storage member in sockunion{}.
966 * Note that we need to copy before calling
967 * freeifaddrs().
968 *
969 * Interface routes are routed only by their
970 * sdl_index or interface name (we provide
971 * both here), not by the ARP address of the
972 * local interface (alen, slen = 0).
973 */
974 memcpy(&su->sdl, sdl, sdl->sdl_len);
975 su->sdl.sdl_alen = 0;
976 su->sdl.sdl_slen = 0;
977 }
978 freeifaddrs(ifap);
979 if (sdl != NULL)
980 return(1);
981 }
982 break;
983 case RTA_NETMASK:
984 su = &so_mask;
985 break;
986 case RTA_GENMASK:
987 su = &so_genmask;
988 break;
989 case RTA_IFP:
990 su = &so_ifp;
991 afamily = AF_LINK;
992 break;
993 case RTA_IFA:
994 su = &so_ifa;
995 break;
996 default:
997 usage("internal error");
998 /*NOTREACHED*/
999 }
1000 su->sa.sa_len = aflen;
1001 su->sa.sa_family = afamily; /* cases that don't want it have left
1002 already */
1003 if (strcmp(str, "default") == 0) {
1004 /*
1005 * Default is net 0.0.0.0/0
1006 */
1007 switch (which) {
1008 case RTA_DST:
1009 forcenet++;
1010 /* bzero(su, sizeof(*su)); *//* for readability */
1011 getaddr(RTA_NETMASK, str, 0);
1012 break;
1013 case RTA_NETMASK:
1014 case RTA_GENMASK:
1015 /* bzero(su, sizeof(*su)); *//* for readability */
1016 break;
1017 }
1018 return(0);
1019 }
1020 switch (afamily) {
1021 #ifdef INET6
1022 case AF_INET6:
1023 {
1024 struct addrinfo hints, *res;
1025
1026 q = NULL;
1027 if (which == RTA_DST && (q = strchr(str, '/')) != NULL)
1028 *q = '\0';
1029 memset(&hints, 0, sizeof(hints));
1030 hints.ai_family = afamily; /*AF_INET6*/
1031 hints.ai_flags = AI_NUMERICHOST;
1032 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1033 if (getaddrinfo(str, "0", &hints, &res) != 0 ||
1034 res->ai_family != AF_INET6 ||
1035 res->ai_addrlen != sizeof(su->sin6)) {
1036 fprintf(stderr, "%s: bad value\n", str);
1037 exit(1);
1038 }
1039 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6));
1040 #ifdef __KAME__
1041 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) ||
1042 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) &&
1043 su->sin6.sin6_scope_id) {
1044 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] =
1045 htons(su->sin6.sin6_scope_id);
1046 su->sin6.sin6_scope_id = 0;
1047 }
1048 #endif
1049 freeaddrinfo(res);
1050 if (q != NULL)
1051 *q++ = '/';
1052 if (which == RTA_DST)
1053 return(inet6_makenetandmask(&su->sin6, q));
1054 return(0);
1055 }
1056 #endif /* INET6 */
1057
1058 #ifdef NS
1059 case AF_NS:
1060 if (which == RTA_DST) {
1061 struct sockaddr_ns *sms = &(so_mask.sns);
1062 memset(sms, 0, sizeof(*sms));
1063 sms->sns_family = 0;
1064 sms->sns_len = 6;
1065 sms->sns_addr.x_net = *(union ns_net *)ns_bh;
1066 rtm_addrs |= RTA_NETMASK;
1067 }
1068 su->sns.sns_addr = ns_addr(str);
1069 return(!ns_nullhost(su->sns.sns_addr));
1070 #endif
1071
1072
1073 case AF_APPLETALK:
1074 if (!atalk_aton(str, &su->sat.sat_addr))
1075 errx(EX_NOHOST, "bad address: %s", str);
1076 rtm_addrs |= RTA_NETMASK;
1077 return(forcehost || su->sat.sat_addr.s_node != 0);
1078
1079 case AF_LINK:
1080 link_addr(str, &su->sdl);
1081 return(1);
1082
1083
1084 case PF_ROUTE:
1085 su->sa.sa_len = sizeof(*su);
1086 sockaddr(str, &su->sa);
1087 return(1);
1088
1089 case AF_INET:
1090 default:
1091 break;
1092 }
1093
1094 if (hpp == NULL)
1095 hpp = &hp;
1096 *hpp = NULL;
1097
1098 q = strchr(str,'/');
1099 if (q != NULL && which == RTA_DST) {
1100 *q = '\0';
1101 if ((val = inet_network(str)) != INADDR_NONE) {
1102 inet_makenetandmask(
1103 val, &su->sin, strtoul(q+1, 0, 0));
1104 return(0);
1105 }
1106 *q = '/';
1107 }
1108 if ((which != RTA_DST || forcenet == 0) &&
1109 inet_aton(str, &su->sin.sin_addr)) {
1110 val = su->sin.sin_addr.s_addr;
1111 if (which != RTA_DST ||
1112 inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
1113 return(1);
1114 else {
1115 val = ntohl(val);
1116 goto netdone;
1117 }
1118 }
1119 if (which == RTA_DST && forcehost == 0 &&
1120 ((val = inet_network(str)) != INADDR_NONE ||
1121 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) {
1122 netdone:
1123 inet_makenetandmask(val, &su->sin, 0);
1124 return(0);
1125 }
1126 hp = gethostbyname(str);
1127 if (hp != NULL) {
1128 *hpp = hp;
1129 su->sin.sin_family = hp->h_addrtype;
1130 memmove((char *)&su->sin.sin_addr, hp->h_addr,
1131 MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr)));
1132 return(1);
1133 }
1134 errx(EX_NOHOST, "bad address: %s", str);
1135 }
1136
1137 static int
1138 prefixlen(const char *len_str)
1139 {
1140 int len = atoi(len_str), q, r;
1141 int max;
1142 char *p;
1143
1144 rtm_addrs |= RTA_NETMASK;
1145 switch (af) {
1146 #ifdef INET6
1147 case AF_INET6:
1148 max = 128;
1149 p = (char *)&so_mask.sin6.sin6_addr;
1150 break;
1151 #endif
1152 case AF_INET:
1153 max = 32;
1154 p = (char *)&so_mask.sin.sin_addr;
1155 break;
1156 default:
1157 fprintf(stderr, "prefixlen not supported in this af\n");
1158 exit(1);
1159 /*NOTREACHED*/
1160 }
1161
1162 if (len < 0 || max < len) {
1163 fprintf(stderr, "%s: bad value\n", len_str);
1164 exit(1);
1165 }
1166
1167 q = len >> 3;
1168 r = len & 7;
1169 so_mask.sa.sa_family = af;
1170 so_mask.sa.sa_len = aflen;
1171 memset((void *)p, 0, max / 8);
1172 if (q > 0)
1173 memset((void *)p, 0xff, q);
1174 if (r > 0)
1175 *((u_char *)p + q) = (0xff00 >> r) & 0xff;
1176 if (len == max)
1177 return(-1);
1178 else
1179 return(len);
1180 }
1181
1182 #ifdef NS
1183 short ns_nullh[] = {0,0,0};
1184
1185 char *
1186 ns_print(struct sockaddr_ns *sns)
1187 {
1188 struct ns_addr work;
1189 union { union ns_net net_e; u_long long_e; } net;
1190 u_short port;
1191 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25];
1192 const char *host = "";
1193 char *p;
1194 u_char *q;
1195
1196 work = sns->sns_addr;
1197 port = ntohs(work.x_port);
1198 work.x_port = 0;
1199 net.net_e = work.x_net;
1200 if (ns_nullhost(work) && net.long_e == 0) {
1201 if (port == 0)
1202 strncpy(mybuf, "*.*", sizeof(mybuf));
1203 else
1204 sprintf(mybuf, "*.%XH", port);
1205 return(mybuf);
1206 }
1207
1208 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0)
1209 host = "any";
1210 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0)
1211 host = "*";
1212 else {
1213 q = work.x_host.c_host;
1214 sprintf(chost, "%02X%02X%02X%02X%02X%02XH",
1215 q[0], q[1], q[2], q[3], q[4], q[5]);
1216 for (p = chost; *p == '0' && p < chost + 12; p++)
1217 /* void */;
1218 host = p;
1219 }
1220 if (port != 0)
1221 sprintf(cport, ".%XH", htons(port));
1222 else
1223 *cport = 0;
1224
1225 snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s",
1226 (unsigned long)ntohl(net.long_e),
1227 host, cport);
1228 return(mybuf);
1229 }
1230 #endif
1231
1232 static void
1233 interfaces(void)
1234 {
1235 size_t needed;
1236 int mib[6];
1237 char *buf, *lim, *next;
1238 struct rt_msghdr *rtm;
1239
1240 mib[0] = CTL_NET;
1241 mib[1] = PF_ROUTE;
1242 mib[2] = 0; /* protocol */
1243 mib[3] = 0; /* wildcard address family */
1244 mib[4] = NET_RT_IFLIST;
1245 mib[5] = 0; /* no flags */
1246 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
1247 err(EX_OSERR, "route-sysctl-estimate");
1248 if ((buf = malloc(needed)) == NULL)
1249 errx(EX_OSERR, "malloc failed");
1250 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
1251 err(EX_OSERR, "actual retrieval of interface table");
1252 lim = buf + needed;
1253 for (next = buf; next < lim; next += rtm->rtm_msglen) {
1254 rtm = (struct rt_msghdr *)next;
1255 print_rtmsg(rtm, rtm->rtm_msglen);
1256 }
1257 }
1258
1259 static void
1260 monitor(void)
1261 {
1262 int n;
1263 char msg[2048];
1264
1265 verbose = 1;
1266 if (debugonly) {
1267 interfaces();
1268 exit(0);
1269 }
1270 for (;;) {
1271 time_t now;
1272 n = read(s, msg, 2048);
1273 now = time(NULL);
1274 printf("\ngot message of size %d on %s", n, ctime(&now));
1275 print_rtmsg((struct rt_msghdr *)msg, n);
1276 }
1277 }
1278
1279 struct {
1280 struct rt_msghdr m_rtm;
1281 char m_space[512];
1282 } m_rtmsg;
1283
1284 static int
1285 rtmsg(int cmd, int flags)
1286 {
1287 static int seq;
1288 int rlen;
1289 char *cp = m_rtmsg.m_space;
1290 int l;
1291
1292 #define NEXTADDR(w, u) \
1293 if (rtm_addrs & (w)) {\
1294 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\
1295 if (verbose) sodump(&(u),"u");\
1296 }
1297
1298 errno = 0;
1299 memset(&m_rtmsg, 0, sizeof(m_rtmsg));
1300 if (cmd == 'a')
1301 cmd = RTM_ADD;
1302 else if (cmd == 'c')
1303 cmd = RTM_CHANGE;
1304 else if (cmd == 'g') {
1305 cmd = RTM_GET;
1306 if (so_ifp.sa.sa_family == 0) {
1307 so_ifp.sa.sa_family = AF_LINK;
1308 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
1309 rtm_addrs |= RTA_IFP;
1310 }
1311 } else
1312 cmd = RTM_DELETE;
1313 #define rtm m_rtmsg.m_rtm
1314 rtm.rtm_type = cmd;
1315 rtm.rtm_flags = flags;
1316 rtm.rtm_version = RTM_VERSION;
1317 rtm.rtm_seq = ++seq;
1318 rtm.rtm_addrs = rtm_addrs;
1319 rtm.rtm_rmx = rt_metrics;
1320 rtm.rtm_inits = rtm_inits;
1321
1322 if (rtm_addrs & RTA_NETMASK)
1323 mask_addr();
1324 NEXTADDR(RTA_DST, so_dst);
1325 NEXTADDR(RTA_GATEWAY, so_gate);
1326 NEXTADDR(RTA_NETMASK, so_mask);
1327 NEXTADDR(RTA_GENMASK, so_genmask);
1328 NEXTADDR(RTA_IFP, so_ifp);
1329 NEXTADDR(RTA_IFA, so_ifa);
1330 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
1331 if (verbose)
1332 print_rtmsg(&rtm, l);
1333 if (debugonly)
1334 return(0);
1335 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
1336 warn("writing to routing socket");
1337 return(-1);
1338 }
1339 if (cmd == RTM_GET) {
1340 do {
1341 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
1342 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
1343 if (l < 0)
1344 warn("read from routing socket");
1345 else
1346 print_getmsg(&rtm, l);
1347 }
1348 #undef rtm
1349 return(0);
1350 }
1351
1352 static void
1353 mask_addr(void)
1354 {
1355 int olen = so_mask.sa.sa_len;
1356 char *cp1 = olen + (char *)&so_mask, *cp2;
1357
1358 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; )
1359 if (*--cp1 != 0) {
1360 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask;
1361 break;
1362 }
1363 if ((rtm_addrs & RTA_DST) == 0)
1364 return;
1365 switch (so_dst.sa.sa_family) {
1366 #ifdef NS
1367 case AF_NS:
1368 #endif
1369 case AF_INET:
1370 #ifdef INET6
1371 case AF_INET6:
1372 #endif
1373 case AF_APPLETALK:
1374 case 0:
1375 return;
1376 }
1377 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst;
1378 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst;
1379 while (cp2 > cp1)
1380 *--cp2 = 0;
1381 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask;
1382 while (cp1 > so_dst.sa.sa_data)
1383 *--cp1 &= *--cp2;
1384 }
1385
1386 const char *msgtypes[] = {
1387 "",
1388 "RTM_ADD: Add Route",
1389 "RTM_DELETE: Delete Route",
1390 "RTM_CHANGE: Change Metrics or flags",
1391 "RTM_GET: Report Metrics",
1392 "RTM_LOSING: Kernel Suspects Partitioning",
1393 "RTM_REDIRECT: Told to use different route",
1394 "RTM_MISS: Lookup failed on this address",
1395 "RTM_LOCK: fix specified metrics",
1396 "RTM_OLDADD: caused by SIOCADDRT",
1397 "RTM_OLDDEL: caused by SIOCDELRT",
1398 "RTM_RESOLVE: Route created by cloning",
1399 "RTM_NEWADDR: address being added to iface",
1400 "RTM_DELADDR: address being removed from iface",
1401 "RTM_IFINFO: iface status change",
1402 "RTM_NEWMADDR: new multicast group membership on iface",
1403 "RTM_DELMADDR: multicast group membership removed from iface",
1404 "RTM_IFANNOUNCE: interface arrival/departure",
1405 0,
1406 };
1407
1408 char metricnames[] =
1409 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount"
1410 "\1mtu";
1411 char routeflags[] =
1412 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT"
1413 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016"
1414 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE"
1415 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST";
1416 char ifnetflags[] =
1417 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1418 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1419 "\017LINK2\020MULTICAST";
1420 char addrnames[] =
1421 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
1422
1423 static void
1424 print_rtmsg(struct rt_msghdr *rtm, int msglen __unused)
1425 {
1426 struct if_msghdr *ifm;
1427 struct ifa_msghdr *ifam;
1428 #ifdef RTM_NEWMADDR
1429 struct ifma_msghdr *ifmam;
1430 #endif
1431 struct if_announcemsghdr *ifan;
1432
1433 if (verbose == 0)
1434 return;
1435 if (rtm->rtm_version != RTM_VERSION) {
1436 printf("routing message version %d not understood\n",
1437 rtm->rtm_version);
1438 return;
1439 }
1440 if (msgtypes[rtm->rtm_type] != NULL)
1441 printf("%s: ", msgtypes[rtm->rtm_type]);
1442 else
1443 printf("#%d: ", rtm->rtm_type);
1444 printf("len %d, ", rtm->rtm_msglen);
1445 switch (rtm->rtm_type) {
1446 case RTM_IFINFO:
1447 ifm = (struct if_msghdr *)rtm;
1448 printf("if# %d, flags:", ifm->ifm_index);
1449 bprintf(stdout, ifm->ifm_flags, ifnetflags);
1450 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs);
1451 break;
1452 case RTM_NEWADDR:
1453 case RTM_DELADDR:
1454 ifam = (struct ifa_msghdr *)rtm;
1455 printf("metric %d, flags:", ifam->ifam_metric);
1456 bprintf(stdout, ifam->ifam_flags, routeflags);
1457 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs);
1458 break;
1459 #ifdef RTM_NEWMADDR
1460 case RTM_NEWMADDR:
1461 case RTM_DELMADDR:
1462 ifmam = (struct ifma_msghdr *)rtm;
1463 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs);
1464 break;
1465 #endif
1466 case RTM_IFANNOUNCE:
1467 ifan = (struct if_announcemsghdr *)rtm;
1468 printf("if# %d, what: ", ifan->ifan_index);
1469 switch (ifan->ifan_what) {
1470 case IFAN_ARRIVAL:
1471 printf("arrival");
1472 break;
1473 case IFAN_DEPARTURE:
1474 printf("departure");
1475 break;
1476 default:
1477 printf("#%d", ifan->ifan_what);
1478 break;
1479 }
1480 printf("\n");
1481 break;
1482
1483 default:
1484 printf("pid: %ld, seq %d, errno %d, flags:",
1485 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1486 bprintf(stdout, rtm->rtm_flags, routeflags);
1487 pmsg_common(rtm);
1488 }
1489 }
1490
1491 static void
1492 print_getmsg(struct rt_msghdr *rtm, int msglen)
1493 {
1494 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
1495 struct sockaddr_dl *ifp = NULL;
1496 struct sockaddr *sa;
1497 char *cp;
1498 int i;
1499
1500 printf(" route to: %s\n", routename(&so_dst.sa));
1501 if (rtm->rtm_version != RTM_VERSION) {
1502 warnx("routing message version %d not understood",
1503 rtm->rtm_version);
1504 return;
1505 }
1506 if (rtm->rtm_msglen > msglen) {
1507 warnx("message length mismatch, in packet %d, returned %d",
1508 rtm->rtm_msglen, msglen);
1509 }
1510 if (rtm->rtm_errno != 0) {
1511 errno = rtm->rtm_errno;
1512 warn("message indicates error %d", errno);
1513 return;
1514 }
1515 cp = ((char *)(rtm + 1));
1516 if (rtm->rtm_addrs)
1517 for (i = 1; i != 0; i <<= 1)
1518 if (i & rtm->rtm_addrs) {
1519 sa = (struct sockaddr *)cp;
1520 switch (i) {
1521 case RTA_DST:
1522 dst = sa;
1523 break;
1524 case RTA_GATEWAY:
1525 gate = sa;
1526 break;
1527 case RTA_NETMASK:
1528 mask = sa;
1529 break;
1530 case RTA_IFP:
1531 if (sa->sa_family == AF_LINK &&
1532 ((struct sockaddr_dl *)sa)->sdl_nlen)
1533 ifp = (struct sockaddr_dl *)sa;
1534 break;
1535 }
1536 ADVANCE(cp, sa);
1537 }
1538 if (dst != NULL && mask != NULL)
1539 mask->sa_family = dst->sa_family; /* XXX */
1540 if (dst != NULL)
1541 printf("destination: %s\n", routename(dst));
1542 if (mask != NULL) {
1543 int savenflag = nflag;
1544
1545 nflag = 1;
1546 printf(" mask: %s\n", routename(mask));
1547 nflag = savenflag;
1548 }
1549 if (gate != NULL && rtm->rtm_flags & RTF_GATEWAY)
1550 printf(" gateway: %s\n", routename(gate));
1551 if (ifp != NULL)
1552 printf(" interface: %.*s\n",
1553 ifp->sdl_nlen, ifp->sdl_data);
1554 printf(" flags: ");
1555 bprintf(stdout, rtm->rtm_flags, routeflags);
1556
1557 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1558 #define msec(u) (((u) + 500) / 1000) /* usec to msec */
1559
1560 printf("\n%s\n", "\
1561 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire");
1562 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1563 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1564 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1565 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1566 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR));
1567 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT));
1568 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
1569 if (rtm->rtm_rmx.rmx_expire != 0)
1570 rtm->rtm_rmx.rmx_expire -= time(0);
1571 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
1572 #undef lock
1573 #undef msec
1574 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
1575 if (verbose)
1576 pmsg_common(rtm);
1577 else if (rtm->rtm_addrs &~ RTA_IGN) {
1578 printf("sockaddrs: ");
1579 bprintf(stdout, rtm->rtm_addrs, addrnames);
1580 putchar('\n');
1581 }
1582 #undef RTA_IGN
1583 }
1584
1585 static void
1586 pmsg_common(struct rt_msghdr *rtm)
1587 {
1588 printf("\nlocks: ");
1589 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
1590 printf(" inits: ");
1591 bprintf(stdout, rtm->rtm_inits, metricnames);
1592 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs);
1593 }
1594
1595 static void
1596 pmsg_addrs(char *cp, int addrs)
1597 {
1598 struct sockaddr *sa;
1599 int i;
1600
1601 if (addrs == 0) {
1602 putchar('\n');
1603 return;
1604 }
1605 printf("\nsockaddrs: ");
1606 bprintf(stdout, addrs, addrnames);
1607 putchar('\n');
1608 for (i = 1; i != 0; i <<= 1)
1609 if (i & addrs) {
1610 sa = (struct sockaddr *)cp;
1611 printf(" %s", routename(sa));
1612 ADVANCE(cp, sa);
1613 }
1614 putchar('\n');
1615 fflush(stdout);
1616 }
1617
1618 static void
1619 bprintf(FILE *fp, int b, u_char *str)
1620 {
1621 int i;
1622 int gotsome = 0;
1623
1624 if (b == 0)
1625 return;
1626 while ((i = *str++) != 0) {
1627 if (b & (1 << (i-1))) {
1628 if (!gotsome)
1629 i = '<';
1630 else
1631 i = ',';
1632 putc(i, fp);
1633 gotsome = 1;
1634 for (; (i = *str) > 32; str++)
1635 putc(i, fp);
1636 } else
1637 while (*str > 32)
1638 str++;
1639 }
1640 if (gotsome)
1641 putc('>', fp);
1642 }
1643
1644 int
1645 keyword(const char *cp)
1646 {
1647 struct keytab *kt = keywords;
1648
1649 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0)
1650 kt++;
1651 return(kt->kt_i);
1652 }
1653
1654 static void
1655 sodump(sup su, const char *which)
1656 {
1657 switch (su->sa.sa_family) {
1658 case AF_LINK:
1659 printf("%s: link %s; ",
1660 which, link_ntoa(&su->sdl));
1661 break;
1662 case AF_INET:
1663 printf("%s: inet %s; ",
1664 which, inet_ntoa(su->sin.sin_addr));
1665 break;
1666 case AF_APPLETALK:
1667 printf("%s: atalk %s; ",
1668 which, atalk_ntoa(su->sat.sat_addr));
1669 break;
1670 #ifdef NS
1671 case AF_NS:
1672 printf("%s: xns %s; ",
1673 which, ns_ntoa(su->sns.sns_addr));
1674 break;
1675 #endif
1676 }
1677 fflush(stdout);
1678 }
1679
1680 /* States*/
1681 #define VIRGIN 0
1682 #define GOTONE 1
1683 #define GOTTWO 2
1684 /* Inputs */
1685 #define DIGIT (4*0)
1686 #define END (4*1)
1687 #define DELIM (4*2)
1688
1689 static void
1690 sockaddr(char *addr, struct sockaddr *sa)
1691 {
1692 char *cp = (char *)sa;
1693 int size = sa->sa_len;
1694 char *cplim = cp + size;
1695 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
1696
1697 memset(cp, 0, size);
1698 cp++;
1699 do {
1700 if ((*addr >= '0') && (*addr <= '9')) {
1701 new = *addr - '0';
1702 } else if ((*addr >= 'a') && (*addr <= 'f')) {
1703 new = *addr - 'a' + 10;
1704 } else if ((*addr >= 'A') && (*addr <= 'F')) {
1705 new = *addr - 'A' + 10;
1706 } else if (*addr == '\0')
1707 state |= END;
1708 else
1709 state |= DELIM;
1710 addr++;
1711 switch (state /* | INPUT */) {
1712 case GOTTWO | DIGIT:
1713 *cp++ = byte; /*FALLTHROUGH*/
1714 case VIRGIN | DIGIT:
1715 state = GOTONE; byte = new; continue;
1716 case GOTONE | DIGIT:
1717 state = GOTTWO; byte = new + (byte << 4); continue;
1718 default: /* | DELIM */
1719 state = VIRGIN; *cp++ = byte; byte = 0; continue;
1720 case GOTONE | END:
1721 case GOTTWO | END:
1722 *cp++ = byte; /* FALLTHROUGH */
1723 case VIRGIN | END:
1724 break;
1725 }
1726 break;
1727 } while (cp < cplim);
1728 sa->sa_len = cp - (char *)sa;
1729 }
1730
1731 static int
1732 atalk_aton(const char *text, struct at_addr *addr)
1733 {
1734 u_int net, node;
1735
1736 if (sscanf(text, "%u.%u", &net, &node) != 2
1737 || net > 0xffff || node > 0xff)
1738 return(0);
1739 addr->s_net = htons(net);
1740 addr->s_node = node;
1741 return(1);
1742 }
1743
1744 static char *
1745 atalk_ntoa(struct at_addr at)
1746 {
1747 static char buf[20];
1748
1749 snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);
1750 return(buf);
1751 }
Port diff from OpenBSD to DragonFly