network_cmds-76.tar.gz
[apple/network_cmds.git] / route.tproj / route.c
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b7080c8e
A
1/*
2 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7 * Reserved. This file contains Original Code and/or Modifications of
8 * Original Code as defined in and that are subject to the Apple Public
9 * Source License Version 1.0 (the 'License'). You may not use this file
10 * except in compliance with the License. Please obtain a copy of the
11 * License at http://www.apple.com/publicsource and read it before using
12 * this file.
13 *
14 * The Original Code and all software distributed under the License are
15 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19 * License for the specific language governing rights and limitations
20 * under the License."
21 *
22 * @APPLE_LICENSE_HEADER_END@
23 */
24/*
25 * Copyright (c) 1983, 1989, 1991, 1993
26 * The Regents of the University of California. All rights reserved.
27 *
28 * Redistribution and use in source and binary forms, with or without
29 * modification, are permitted provided that the following conditions
30 * are met:
31 * 1. Redistributions of source code must retain the above copyright
32 * notice, this list of conditions and the following disclaimer.
33 * 2. Redistributions in binary form must reproduce the above copyright
34 * notice, this list of conditions and the following disclaimer in the
35 * documentation and/or other materials provided with the distribution.
36 * 3. All advertising materials mentioning features or use of this software
37 * must display the following acknowledgement:
38 * This product includes software developed by the University of
39 * California, Berkeley and its contributors.
40 * 4. Neither the name of the University nor the names of its contributors
41 * may be used to endorse or promote products derived from this software
42 * without specific prior written permission.
43 *
44 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
45 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
46 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
47 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
48 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
50 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
52 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
53 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
54 * SUCH DAMAGE.
55 */
56
57#ifndef lint
58static const char copyright[] =
59"@(#) Copyright (c) 1983, 1989, 1991, 1993\n\
60 The Regents of the University of California. All rights reserved.\n";
61#endif /* not lint */
62
63#ifndef lint
64#if 0
65static char sccsid[] = "@(#)route.c 8.3 (Berkeley) 3/19/94";
66#endif
67static const char rcsid[] =
68 "$Id: route.c,v 1.1.1.2 2000/01/11 01:49:18 wsanchez Exp $";
69#endif /* not lint */
70
71#include <sys/param.h>
72#include <sys/file.h>
73#include <sys/socket.h>
74#include <sys/ioctl.h>
75#include <sys/sysctl.h>
76
77#include <net/if.h>
78#include <net/route.h>
79#include <net/if_dl.h>
80#include <netinet/in.h>
81#ifdef AT
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 <stdio.h>
94#include <stdlib.h>
95#include <string.h>
96#include <sysexits.h>
97#include <unistd.h>
98
99struct keytab {
100 char *kt_cp;
101 int kt_i;
102} keywords[] = {
103#include "keywords.h"
104 {0, 0}
105};
106
107struct ortentry route;
108union sockunion {
109 struct sockaddr sa;
110 struct sockaddr_in sin;
111#ifdef AT
112 struct sockaddr_at sat;
113#endif
114#ifdef NS
115 struct sockaddr_ns sns;
116#endif
117 struct sockaddr_dl sdl;
118} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp;
119
120typedef union sockunion *sup;
121int pid, rtm_addrs, uid;
122int s;
123int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword();
124int iflag, verbose, aflen = sizeof (struct sockaddr_in);
125int locking, lockrest, debugonly;
126struct rt_metrics rt_metrics;
127u_long rtm_inits;
128struct in_addr inet_makeaddr();
129#ifdef AT
130int atalk_aton __P((const char *, struct at_addr *));
131char *atalk_ntoa __P((struct at_addr));
132#endif
133char *routename(), *netname();
134void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf();
135void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr();
136int getaddr(), rtmsg(), x25_makemask();
137extern char *inet_ntoa(), *iso_ntoa(), *link_ntoa();
138
139void usage __P((const char *));
140
141void
142usage(cp)
143 const char *cp;
144{
145 if (cp)
146 warnx("bad keyword: %s", cp);
147 (void) fprintf(stderr,
148 "usage: route [-dnqtv] command [[modifiers] args]\n");
149 exit(EX_USAGE);
150 /* NOTREACHED */
151}
152
153#define ROUNDUP(a) \
154 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
155#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
156
157int
158main(argc, argv)
159 int argc;
160 char **argv;
161{
162 int ch;
163
164 if (argc < 2)
165 usage((char *)NULL);
166
167 while ((ch = getopt(argc, argv, "nqdtv")) != -1)
168 switch(ch) {
169 case 'n':
170 nflag = 1;
171 break;
172 case 'q':
173 qflag = 1;
174 break;
175 case 'v':
176 verbose = 1;
177 break;
178 case 't':
179 tflag = 1;
180 break;
181 case 'd':
182 debugonly = 1;
183 break;
184 case '?':
185 default:
186 usage((char *)NULL);
187 }
188 argc -= optind;
189 argv += optind;
190
191 pid = getpid();
192 uid = getuid();
193 if (tflag)
194 s = open("/dev/null", O_WRONLY, 0);
195 else
196 s = socket(PF_ROUTE, SOCK_RAW, 0);
197 if (s < 0)
198 err(EX_OSERR, "socket");
199 setuid(uid);
200 if (*argv)
201 switch (keyword(*argv)) {
202 case K_GET:
203 uid = 0;
204 /* FALLTHROUGH */
205
206 case K_CHANGE:
207 case K_ADD:
208 case K_DELETE:
209 newroute(argc, argv);
210 exit(0);
211 /* NOTREACHED */
212
213 case K_MONITOR:
214 monitor();
215 /* NOTREACHED */
216
217 case K_FLUSH:
218 flushroutes(argc, argv);
219 exit(0);
220 /* NOTREACHED */
221 }
222 usage(*argv);
223 /* NOTREACHED */
224}
225
226/*
227 * Purge all entries in the routing tables not
228 * associated with network interfaces.
229 */
230void
231flushroutes(argc, argv)
232 int argc;
233 char *argv[];
234{
235 size_t needed;
236 int mib[6], rlen, seqno;
237 char *buf, *next, *lim;
238 register struct rt_msghdr *rtm;
239
240 if (uid) {
241 errx(EX_NOPERM, "must be root to alter routing table");
242 }
243 shutdown(s, 0); /* Don't want to read back our messages */
244 if (argc > 1) {
245 argv++;
246 if (argc == 2 && **argv == '-')
247 switch (keyword(*argv + 1)) {
248 case K_INET:
249 af = AF_INET;
250 break;
251
252#ifdef
253 case K_ATALK:
254 af = AF_APPLETALK;
255 break;
256#endif
257#ifdef NS
258 case K_XNS:
259 af = AF_NS;
260 break;
261#endif
262 case K_LINK:
263 af = AF_LINK;
264 break;
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 */
276 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
277 err(EX_OSERR, "route-sysctl-estimate");
278 if ((buf = malloc(needed)) == NULL)
279 errx(EX_OSERR, "malloc failed");
280 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
281 err(EX_OSERR, "route-sysctl-get");
282 lim = buf + needed;
283 if (verbose)
284 (void) printf("Examining routing table from sysctl\n");
285 seqno = 0; /* ??? */
286 for (next = buf; next < lim; next += rtm->rtm_msglen) {
287 rtm = (struct rt_msghdr *)next;
288 if (verbose)
289 print_rtmsg(rtm, rtm->rtm_msglen);
290 if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
291 continue;
292 if (af) {
293 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
294
295 if (sa->sa_family != af)
296 continue;
297 }
298 if (debugonly)
299 continue;
300 rtm->rtm_type = RTM_DELETE;
301 rtm->rtm_seq = seqno;
302 rlen = write(s, next, rtm->rtm_msglen);
303 if (rlen < (int)rtm->rtm_msglen) {
304 warn("write to routing socket");
305 (void) printf("got only %d for rlen\n", rlen);
306 break;
307 }
308 seqno++;
309 if (qflag)
310 continue;
311 if (verbose)
312 print_rtmsg(rtm, rlen);
313 else {
314 struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
315 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
316 routename(sa) : netname(sa));
317 sa = (struct sockaddr *)(sa->sa_len + (char *)sa);
318 (void) printf("%-20.20s ", routename(sa));
319 (void) printf("done\n");
320 }
321 }
322}
323
324char *
325routename(sa)
326 struct sockaddr *sa;
327{
328 register char *cp;
329 static char line[MAXHOSTNAMELEN + 1];
330 struct hostent *hp;
331 static char domain[MAXHOSTNAMELEN + 1];
332 static int first = 1;
333#ifdef NS
334 char *ns_print();
335#endif
336
337 if (first) {
338 first = 0;
339 if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
340 (cp = index(domain, '.'))) {
341 domain[MAXHOSTNAMELEN] = '\0';
342 (void) strcpy(domain, cp + 1);
343 } else
344 domain[0] = 0;
345 }
346
347 if (sa->sa_len == 0)
348 strcpy(line, "default");
349 else switch (sa->sa_family) {
350
351 case AF_INET:
352 { struct in_addr in;
353 in = ((struct sockaddr_in *)sa)->sin_addr;
354
355 cp = 0;
356 if (in.s_addr == INADDR_ANY || sa->sa_len < 4)
357 cp = "default";
358 if (cp == 0 && !nflag) {
359 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
360 AF_INET);
361 if (hp) {
362 if ((cp = index(hp->h_name, '.')) &&
363 !strcmp(cp + 1, domain))
364 *cp = 0;
365 cp = hp->h_name;
366 }
367 }
368 if (cp) {
369 strncpy(line, cp, sizeof(line) - 1);
370 line[sizeof(line) - 1] = '\0';
371 } else {
372 /* XXX - why not inet_ntoa()? */
373#define C(x) (unsigned)((x) & 0xff)
374 in.s_addr = ntohl(in.s_addr);
375 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
376 C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
377 }
378 break;
379 }
380#ifdef AT
381 case AF_APPLETALK:
382 (void) snprintf(line, sizeof(line), "atalk %s",
383 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
384 break;
385#endif
386#ifdef NS
387 case AF_NS:
388 return (ns_print((struct sockaddr_ns *)sa));
389#endif
390
391 case AF_LINK:
392 return (link_ntoa((struct sockaddr_dl *)sa));
393
394 default:
395 { u_short *s = (u_short *)sa;
396 u_short *slim = s + ((sa->sa_len + 1) >> 1);
397 char *cp = line + sprintf(line, "(%d)", sa->sa_family);
398 char *cpe = line + sizeof(line);
399
400 while (++s < slim && cp < cpe) /* start with sa->sa_data */
401 cp += snprintf(cp, cpe - cp, " %x", *s);
402 break;
403 }
404 }
405 return (line);
406}
407
408/*
409 * Return the name of the network whose address is given.
410 * The address is assumed to be that of a net or subnet, not a host.
411 */
412char *
413netname(sa)
414 struct sockaddr *sa;
415{
416 char *cp = 0;
417 static char line[MAXHOSTNAMELEN + 1];
418 struct netent *np = 0;
419 u_long net, mask;
420 register u_long i;
421 int subnetshift;
422#ifdef NS
423 char *ns_print();
424#endif
425
426 switch (sa->sa_family) {
427
428 case AF_INET:
429 { struct in_addr in;
430 in = ((struct sockaddr_in *)sa)->sin_addr;
431
432 i = in.s_addr = ntohl(in.s_addr);
433 if (in.s_addr == 0)
434 cp = "default";
435 else if (!nflag) {
436 if (IN_CLASSA(i)) {
437 mask = IN_CLASSA_NET;
438 subnetshift = 8;
439 } else if (IN_CLASSB(i)) {
440 mask = IN_CLASSB_NET;
441 subnetshift = 8;
442 } else {
443 mask = IN_CLASSC_NET;
444 subnetshift = 4;
445 }
446 /*
447 * If there are more bits than the standard mask
448 * would suggest, subnets must be in use.
449 * Guess at the subnet mask, assuming reasonable
450 * width subnet fields.
451 */
452 while (in.s_addr &~ mask)
453 mask = (long)mask >> subnetshift;
454 net = in.s_addr & mask;
455 while ((mask & 1) == 0)
456 mask >>= 1, net >>= 1;
457 np = getnetbyaddr(net, AF_INET);
458 if (np)
459 cp = np->n_name;
460 }
461 if (cp)
462 strncpy(line, cp, sizeof(line));
463 else if ((in.s_addr & 0xffffff) == 0)
464 (void) sprintf(line, "%u", C(in.s_addr >> 24));
465 else if ((in.s_addr & 0xffff) == 0)
466 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24),
467 C(in.s_addr >> 16));
468 else if ((in.s_addr & 0xff) == 0)
469 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
470 C(in.s_addr >> 16), C(in.s_addr >> 8));
471 else
472 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
473 C(in.s_addr >> 16), C(in.s_addr >> 8),
474 C(in.s_addr));
475 break;
476 }
477#ifdef AT
478 case AF_APPLETALK:
479 (void) snprintf(line, sizeof(line), "atalk %s",
480 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr));
481 break;
482#endif
483#ifdef NS
484 case AF_NS:
485 return (ns_print((struct sockaddr_ns *)sa));
486 break;
487#endif
488
489 case AF_LINK:
490 return (link_ntoa((struct sockaddr_dl *)sa));
491
492
493 default:
494 { u_short *s = (u_short *)sa->sa_data;
495 u_short *slim = s + ((sa->sa_len + 1)>>1);
496 char *cp = line + sprintf(line, "af %d:", sa->sa_family);
497 char *cpe = line + sizeof(line);
498
499 while (s < slim && cp < cpe)
500 cp += snprintf(cp, cpe - cp, " %x", *s++);
501 break;
502 }
503 }
504 return (line);
505}
506
507void
508set_metric(value, key)
509 char *value;
510 int key;
511{
512 int flag = 0;
513 u_long noval, *valp = &noval;
514
515 switch (key) {
516#define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
517 caseof(K_MTU, RTV_MTU, rmx_mtu);
518 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
519 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
520 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
521 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
522 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
523 caseof(K_RTT, RTV_RTT, rmx_rtt);
524 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
525 }
526 rtm_inits |= flag;
527 if (lockrest || locking)
528 rt_metrics.rmx_locks |= flag;
529 if (locking)
530 locking = 0;
531 *valp = atoi(value);
532}
533
534void
535newroute(argc, argv)
536 int argc;
537 register char **argv;
538{
539 char *cmd, *dest = "", *gateway = "", *err;
540 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC;
541 int key;
542 struct hostent *hp = 0;
543
544 if (uid) {
545 errx(EX_NOPERM, "must be root to alter routing table");
546 }
547 cmd = argv[0];
548 if (*cmd != 'g')
549 shutdown(s, 0); /* Don't want to read back our messages */
550 while (--argc > 0) {
551 if (**(++argv)== '-') {
552 switch (key = keyword(1 + *argv)) {
553 case K_LINK:
554 af = AF_LINK;
555 aflen = sizeof(struct sockaddr_dl);
556 break;
557 case K_INET:
558 af = AF_INET;
559 aflen = sizeof(struct sockaddr_in);
560 break;
561#ifdef AT
562 case K_ATALK:
563 af = AF_APPLETALK;
564 aflen = sizeof(struct sockaddr_at);
565 break;
566#endif
567 case K_SA:
568 af = PF_ROUTE;
569 aflen = sizeof(union sockunion);
570 break;
571#ifdef NS
572 case K_XNS:
573 af = AF_NS;
574 aflen = sizeof(struct sockaddr_ns);
575 break;
576#endif
577 case K_IFACE:
578 case K_INTERFACE:
579 iflag++;
580 break;
581 case K_NOSTATIC:
582 flags &= ~RTF_STATIC;
583 break;
584
585 case K_LLINFO:
586 flags |= RTF_LLINFO;
587 break;
588
589 case K_LOCK:
590 locking = 1;
591 break;
592 case K_LOCKREST:
593 lockrest = 1;
594 break;
595 case K_HOST:
596 forcehost++;
597 break;
598 case K_REJECT:
599 flags |= RTF_REJECT;
600 break;
601 case K_BLACKHOLE:
602 flags |= RTF_BLACKHOLE;
603 break;
604 case K_PROTO1:
605 flags |= RTF_PROTO1;
606 break;
607 case K_PROTO2:
608 flags |= RTF_PROTO2;
609 break;
610 case K_CLONING:
611 flags |= RTF_CLONING;
612 break;
613 case K_XRESOLVE:
614 flags |= RTF_XRESOLVE;
615 break;
616 case K_STATIC:
617 flags |= RTF_STATIC;
618 break;
619 case K_IFA:
620 argc--;
621 (void) getaddr(RTA_IFA, *++argv, 0);
622 break;
623 case K_IFP:
624 argc--;
625 (void) getaddr(RTA_IFP, *++argv, 0);
626 break;
627 case K_GENMASK:
628 argc--;
629 (void) getaddr(RTA_GENMASK, *++argv, 0);
630 break;
631 case K_GATEWAY:
632 argc--;
633 (void) getaddr(RTA_GATEWAY, *++argv, 0);
634 break;
635 case K_DST:
636 argc--;
637 ishost = getaddr(RTA_DST, *++argv, &hp);
638 dest = *argv;
639 break;
640 case K_NETMASK:
641 argc--;
642 (void) getaddr(RTA_NETMASK, *++argv, 0);
643 /* FALLTHROUGH */
644 case K_NET:
645 forcenet++;
646 break;
647 case K_MTU:
648 case K_HOPCOUNT:
649 case K_EXPIRE:
650 case K_RECVPIPE:
651 case K_SENDPIPE:
652 case K_SSTHRESH:
653 case K_RTT:
654 case K_RTTVAR:
655 argc--;
656 set_metric(*++argv, key);
657 break;
658 default:
659 usage(1+*argv);
660 }
661 } else {
662 if ((rtm_addrs & RTA_DST) == 0) {
663 dest = *argv;
664 ishost = getaddr(RTA_DST, *argv, &hp);
665 } else if ((rtm_addrs & RTA_GATEWAY) == 0) {
666 gateway = *argv;
667 (void) getaddr(RTA_GATEWAY, *argv, &hp);
668 } else {
669 (void) getaddr(RTA_NETMASK, *argv, 0);
670 }
671 }
672 }
673 if (forcehost)
674 ishost = 1;
675 if (forcenet)
676 ishost = 0;
677 flags |= RTF_UP;
678 if (ishost)
679 flags |= RTF_HOST;
680 if (iflag == 0)
681 flags |= RTF_GATEWAY;
682 for (attempts = 1; ; attempts++) {
683 errno = 0;
684 if ((ret = rtmsg(*cmd, flags)) == 0)
685 break;
686 if (errno != ENETUNREACH && errno != ESRCH)
687 break;
688 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) {
689 hp->h_addr_list++;
690 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr,
691 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr)));
692 } else
693 break;
694 }
695 if (*cmd == 'g')
696 exit(0);
697 oerrno = errno;
698 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest);
699 if (*gateway) {
700 (void) printf(": gateway %s", gateway);
701 if (attempts > 1 && ret == 0 && af == AF_INET)
702 (void) printf(" (%s)",
703 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr));
704 }
705 if (ret == 0)
706 (void) printf("\n");
707 else {
708 switch (oerrno) {
709 case ESRCH:
710 err = "not in table";
711 break;
712 case EBUSY:
713 err = "entry in use";
714 break;
715 case ENOBUFS:
716 err = "routing table overflow";
717 break;
718 default:
719 err = strerror(oerrno);
720 break;
721 }
722 (void) printf(": %s\n", err);
723 }
724}
725
726void
727inet_makenetandmask(net, sin, bits)
728 u_long net, bits;
729 register struct sockaddr_in *sin;
730{
731 u_long addr, mask = 0;
732 register char *cp;
733
734 rtm_addrs |= RTA_NETMASK;
735 if (net == 0)
736 mask = addr = 0;
737 else if (bits) {
738 addr = net;
739 mask = 0xffffffff << (32 - bits);
740 } else if (net < 128) {
741 addr = net << IN_CLASSA_NSHIFT;
742 mask = IN_CLASSA_NET;
743 } else if (net < 65536) {
744 addr = net << IN_CLASSB_NSHIFT;
745 mask = IN_CLASSB_NET;
746 } else if (net < 16777216L) {
747 addr = net << IN_CLASSC_NSHIFT;
748 mask = IN_CLASSC_NET;
749 } else {
750 addr = net;
751 if ((addr & IN_CLASSA_HOST) == 0)
752 mask = IN_CLASSA_NET;
753 else if ((addr & IN_CLASSB_HOST) == 0)
754 mask = IN_CLASSB_NET;
755 else if ((addr & IN_CLASSC_HOST) == 0)
756 mask = IN_CLASSC_NET;
757 else
758 mask = -1;
759 }
760 sin->sin_addr.s_addr = htonl(addr);
761 sin = &so_mask.sin;
762 sin->sin_addr.s_addr = htonl(mask);
763 sin->sin_len = 0;
764 sin->sin_family = 0;
765 cp = (char *)(&sin->sin_addr + 1);
766 while (*--cp == 0 && cp > (char *)sin)
767 ;
768 sin->sin_len = 1 + cp - (char *)sin;
769}
770
771/*
772 * Interpret an argument as a network address of some kind,
773 * returning 1 if a host address, 0 if a network address.
774 */
775int
776getaddr(which, s, hpp)
777 int which;
778 char *s;
779 struct hostent **hpp;
780{
781 register sup su;
782#ifdef NS
783 struct ns_addr ns_addr();
784#endif
785 struct hostent *hp;
786 struct netent *np;
787 u_long val;
788 char *q,qs;
789
790 if (af == 0) {
791 af = AF_INET;
792 aflen = sizeof(struct sockaddr_in);
793 }
794 rtm_addrs |= which;
795 switch (which) {
796 case RTA_DST:
797 su = &so_dst;
798 break;
799 case RTA_GATEWAY:
800 su = &so_gate;
801 if (iflag) {
802 #define MAX_IFACES 400
803 int sock;
804 struct ifreq iflist[MAX_IFACES];
805 struct ifconf ifconf;
806 struct ifreq *ifr, *ifr_end;
807 struct sockaddr_dl *dl, *sdl = NULL;
808
809 /* Get socket */
810 if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0)
811 err(1, "socket");
812
813 /* Get interface list */
814 ifconf.ifc_req = iflist;
815 ifconf.ifc_len = sizeof(iflist);
816 if (ioctl(sock, SIOCGIFCONF, &ifconf) < 0)
817 err(1, "ioctl(SIOCGIFCONF)");
818 close(sock);
819
820 /* Look for this interface in the list */
821 for (ifr = ifconf.ifc_req,
822 ifr_end = (struct ifreq *)
823 (ifconf.ifc_buf + ifconf.ifc_len);
824 ifr < ifr_end;
825 ifr = (struct ifreq *) ((char *) &ifr->ifr_addr
826 + ifr->ifr_addr.sa_len)) {
827 dl = (struct sockaddr_dl *)&ifr->ifr_addr;
828 if (ifr->ifr_addr.sa_family == AF_LINK
829 && (ifr->ifr_flags & IFF_POINTOPOINT)
830 && !strncmp(s, dl->sdl_data, dl->sdl_nlen)
831 && s[dl->sdl_nlen] == 0) {
832 sdl = dl;
833 break;
834 }
835 }
836
837 /* If we found it, then use it */
838 if (sdl) {
839 su->sdl = *sdl;
840 return(1);
841 }
842 }
843 break;
844 case RTA_NETMASK:
845 su = &so_mask;
846 break;
847 case RTA_GENMASK:
848 su = &so_genmask;
849 break;
850 case RTA_IFP:
851 su = &so_ifp;
852 break;
853 case RTA_IFA:
854 su = &so_ifa;
855 break;
856 default:
857 usage("internal error");
858 /*NOTREACHED*/
859 }
860 su->sa.sa_len = aflen;
861 su->sa.sa_family = af; /* cases that don't want it have left already */
862 if (strcmp(s, "default") == 0) {
863 /*
864 * Default is net 0.0.0.0/0
865 */
866 switch (which) {
867 case RTA_DST:
868 forcenet++;
869 /* bzero(su, sizeof(*su)); *//* for readability */
870 (void) getaddr(RTA_NETMASK, s, 0);
871 break;
872#if 0
873 case RTA_NETMASK:
874 case RTA_GENMASK:
875 /* bzero(su, sizeof(*su)); *//* for readability */
876#endif
877 }
878 return (0);
879 }
880 switch (af) {
881#ifdef NS
882 case AF_NS:
883 if (which == RTA_DST) {
884 extern short ns_bh[3];
885 struct sockaddr_ns *sms = &(so_mask.sns);
886 bzero((char *)sms, sizeof(*sms));
887 sms->sns_family = 0;
888 sms->sns_len = 6;
889 sms->sns_addr.x_net = *(union ns_net *)ns_bh;
890 rtm_addrs |= RTA_NETMASK;
891 }
892 su->sns.sns_addr = ns_addr(s);
893 return (!ns_nullhost(su->sns.sns_addr));
894#endif
895
896#ifdef AT
897 case AF_APPLETALK:
898 if (!atalk_aton(s, &su->sat.sat_addr))
899 errx(EX_NOHOST, "bad address: %s", s);
900 rtm_addrs |= RTA_NETMASK;
901 return(forcehost || su->sat.sat_addr.s_node != 0);
902#endif
903 case AF_LINK:
904 link_addr(s, &su->sdl);
905 return (1);
906
907
908 case PF_ROUTE:
909 su->sa.sa_len = sizeof(*su);
910 sockaddr(s, &su->sa);
911 return (1);
912
913 case AF_INET:
914 default:
915 break;
916 }
917
918 if (hpp == NULL)
919 hpp = &hp;
920 *hpp = NULL;
921
922 q = strchr(s,'/');
923 if (q && which == RTA_DST) {
924 qs = *q;
925 *q = '\0';
926 if (((val = inet_addr(s)) != INADDR_NONE)) {
927 inet_makenetandmask(
928 htonl(val), &su->sin, strtoul(q+1, 0, 0));
929 return (0);
930 }
931 *q =qs;
932 }
933 if (((val = inet_addr(s)) != INADDR_NONE) &&
934 (which != RTA_DST || forcenet == 0)) {
935 su->sin.sin_addr.s_addr = val;
936 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
937 return (1);
938 else {
939 val = ntohl(val);
940 goto netdone;
941 }
942 }
943 if ((val = inet_network(s)) != INADDR_NONE ||
944 (forcehost == 0 && (np = getnetbyname(s)) != NULL &&
945 (val = np->n_net) != 0)) {
946netdone:
947 if (which == RTA_DST)
948 inet_makenetandmask(val, &su->sin, 0);
949 return (0);
950 }
951 hp = gethostbyname(s);
952 if (hp) {
953 *hpp = hp;
954 su->sin.sin_family = hp->h_addrtype;
955 bcopy(hp->h_addr, (char *)&su->sin.sin_addr,
956 MIN(hp->h_length, sizeof(su->sin.sin_addr)));
957 return (1);
958 }
959 errx(EX_NOHOST, "bad address: %s", s);
960}
961
962
963#ifdef NS
964short ns_nullh[] = {0,0,0};
965short ns_bh[] = {-1,-1,-1};
966
967char *
968ns_print(sns)
969 struct sockaddr_ns *sns;
970{
971 struct ns_addr work;
972 union { union ns_net net_e; u_long long_e; } net;
973 u_short port;
974 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25];
975 char *host = "";
976 register char *p;
977 register u_char *q;
978
979 work = sns->sns_addr;
980 port = ntohs(work.x_port);
981 work.x_port = 0;
982 net.net_e = work.x_net;
983 if (ns_nullhost(work) && net.long_e == 0) {
984 if (!port)
985 return ("*.*");
986 (void) sprintf(mybuf, "*.%XH", port);
987 return (mybuf);
988 }
989
990 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0)
991 host = "any";
992 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0)
993 host = "*";
994 else {
995 q = work.x_host.c_host;
996 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH",
997 q[0], q[1], q[2], q[3], q[4], q[5]);
998 for (p = chost; *p == '0' && p < chost + 12; p++)
999 /* void */;
1000 host = p;
1001 }
1002 if (port)
1003 (void) sprintf(cport, ".%XH", htons(port));
1004 else
1005 *cport = 0;
1006
1007 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s",
1008 (unsigned long)ntohl(net.long_e),
1009 host, cport);
1010 return (mybuf);
1011}
1012#endif
1013
1014void
1015interfaces()
1016{
1017 size_t needed;
1018 int mib[6];
1019 char *buf, *lim, *next;
1020 register struct rt_msghdr *rtm;
1021
1022 mib[0] = CTL_NET;
1023 mib[1] = PF_ROUTE;
1024 mib[2] = 0; /* protocol */
1025 mib[3] = 0; /* wildcard address family */
1026 mib[4] = NET_RT_IFLIST;
1027 mib[5] = 0; /* no flags */
1028 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
1029 err(EX_OSERR, "route-sysctl-estimate");
1030 if ((buf = malloc(needed)) == NULL)
1031 errx(EX_OSERR, "malloc failed");
1032 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
1033 err(EX_OSERR, "actual retrieval of interface table");
1034 lim = buf + needed;
1035 for (next = buf; next < lim; next += rtm->rtm_msglen) {
1036 rtm = (struct rt_msghdr *)next;
1037 print_rtmsg(rtm, rtm->rtm_msglen);
1038 }
1039}
1040
1041void
1042monitor()
1043{
1044 int n;
1045 char msg[2048];
1046
1047 verbose = 1;
1048 if (debugonly) {
1049 interfaces();
1050 exit(0);
1051 }
1052 for(;;) {
1053 n = read(s, msg, 2048);
1054 (void) printf("got message of size %d\n", n);
1055 print_rtmsg((struct rt_msghdr *)msg, n);
1056 }
1057}
1058
1059struct {
1060 struct rt_msghdr m_rtm;
1061 char m_space[512];
1062} m_rtmsg;
1063
1064int
1065rtmsg(cmd, flags)
1066 int cmd, flags;
1067{
1068 static int seq;
1069 int rlen;
1070 register char *cp = m_rtmsg.m_space;
1071 register int l;
1072
1073#define NEXTADDR(w, u) \
1074 if (rtm_addrs & (w)) {\
1075 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\
1076 if (verbose) sodump(&(u),"u");\
1077 }
1078
1079 errno = 0;
1080 bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
1081 if (cmd == 'a')
1082 cmd = RTM_ADD;
1083 else if (cmd == 'c')
1084 cmd = RTM_CHANGE;
1085 else if (cmd == 'g') {
1086 cmd = RTM_GET;
1087 if (so_ifp.sa.sa_family == 0) {
1088 so_ifp.sa.sa_family = AF_LINK;
1089 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
1090 rtm_addrs |= RTA_IFP;
1091 }
1092 } else
1093 cmd = RTM_DELETE;
1094#define rtm m_rtmsg.m_rtm
1095 rtm.rtm_type = cmd;
1096 rtm.rtm_flags = flags;
1097 rtm.rtm_version = RTM_VERSION;
1098 rtm.rtm_seq = ++seq;
1099 rtm.rtm_addrs = rtm_addrs;
1100 rtm.rtm_rmx = rt_metrics;
1101 rtm.rtm_inits = rtm_inits;
1102
1103 if (rtm_addrs & RTA_NETMASK)
1104 mask_addr();
1105 NEXTADDR(RTA_DST, so_dst);
1106 NEXTADDR(RTA_GATEWAY, so_gate);
1107 NEXTADDR(RTA_NETMASK, so_mask);
1108 NEXTADDR(RTA_GENMASK, so_genmask);
1109 NEXTADDR(RTA_IFP, so_ifp);
1110 NEXTADDR(RTA_IFA, so_ifa);
1111 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
1112 if (verbose)
1113 print_rtmsg(&rtm, l);
1114 if (debugonly)
1115 return (0);
1116 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
1117 warn("writing to routing socket");
1118 return (-1);
1119 }
1120 if (cmd == RTM_GET) {
1121 do {
1122 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
1123 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
1124 if (l < 0)
1125 warn("read from routing socket");
1126 else
1127 print_getmsg(&rtm, l);
1128 }
1129#undef rtm
1130 return (0);
1131}
1132
1133void
1134mask_addr()
1135{
1136 int olen = so_mask.sa.sa_len;
1137 register char *cp1 = olen + (char *)&so_mask, *cp2;
1138
1139 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; )
1140 if (*--cp1 != 0) {
1141 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask;
1142 break;
1143 }
1144 if ((rtm_addrs & RTA_DST) == 0)
1145 return;
1146 switch (so_dst.sa.sa_family) {
1147#ifdef NS
1148 case AF_NS:
1149#endif
1150 case AF_INET:
1151 case AF_APPLETALK:
1152 case 0:
1153 return;
1154 }
1155 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst;
1156 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst;
1157 while (cp2 > cp1)
1158 *--cp2 = 0;
1159 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask;
1160 while (cp1 > so_dst.sa.sa_data)
1161 *--cp1 &= *--cp2;
1162}
1163
1164char *msgtypes[] = {
1165 "",
1166 "RTM_ADD: Add Route",
1167 "RTM_DELETE: Delete Route",
1168 "RTM_CHANGE: Change Metrics or flags",
1169 "RTM_GET: Report Metrics",
1170 "RTM_LOSING: Kernel Suspects Partitioning",
1171 "RTM_REDIRECT: Told to use different route",
1172 "RTM_MISS: Lookup failed on this address",
1173 "RTM_LOCK: fix specified metrics",
1174 "RTM_OLDADD: caused by SIOCADDRT",
1175 "RTM_OLDDEL: caused by SIOCDELRT",
1176 "RTM_RESOLVE: Route created by cloning",
1177 "RTM_NEWADDR: address being added to iface",
1178 "RTM_DELADDR: address being removed from iface",
1179 "RTM_IFINFO: iface status change",
1180 "RTM_NEWMADDR: new multicast group membership on iface",
1181 "RTM_DELMADDR: multicast group membership removed from iface",
1182 0,
1183};
1184
1185char metricnames[] =
1186"\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount"
1187"\1mtu";
1188char routeflags[] =
1189"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT"
1190"\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016"
1191"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE"
1192"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST";
1193char ifnetflags[] =
1194"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1195"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1196"\017LINK2\020MULTICAST";
1197char addrnames[] =
1198"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
1199
1200void
1201print_rtmsg(rtm, msglen)
1202 register struct rt_msghdr *rtm;
1203 int msglen;
1204{
1205 struct if_msghdr *ifm;
1206 struct ifa_msghdr *ifam;
1207#ifdef RTM_NEWMADDR
1208 struct ifma_msghdr *ifmam;
1209#endif
1210
1211 if (verbose == 0)
1212 return;
1213 if (rtm->rtm_version != RTM_VERSION) {
1214 (void) printf("routing message version %d not understood\n",
1215 rtm->rtm_version);
1216 return;
1217 }
1218 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen);
1219 switch (rtm->rtm_type) {
1220 case RTM_IFINFO:
1221 ifm = (struct if_msghdr *)rtm;
1222 (void) printf("if# %d, flags:", ifm->ifm_index);
1223 bprintf(stdout, ifm->ifm_flags, ifnetflags);
1224 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs);
1225 break;
1226 case RTM_NEWADDR:
1227 case RTM_DELADDR:
1228 ifam = (struct ifa_msghdr *)rtm;
1229 (void) printf("metric %d, flags:", ifam->ifam_metric);
1230 bprintf(stdout, ifam->ifam_flags, routeflags);
1231 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs);
1232 break;
1233#ifdef RTM_NEWMADDR
1234 case RTM_NEWMADDR:
1235 case RTM_DELMADDR:
1236 ifmam = (struct ifma_msghdr *)rtm;
1237 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs);
1238 break;
1239#endif
1240 default:
1241 (void) printf("pid: %ld, seq %d, errno %d, flags:",
1242 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1243 bprintf(stdout, rtm->rtm_flags, routeflags);
1244 pmsg_common(rtm);
1245 }
1246}
1247
1248void
1249print_getmsg(rtm, msglen)
1250 register struct rt_msghdr *rtm;
1251 int msglen;
1252{
1253 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
1254 struct sockaddr_dl *ifp = NULL;
1255 register struct sockaddr *sa;
1256 register char *cp;
1257 register int i;
1258
1259 (void) printf(" route to: %s\n", routename(&so_dst));
1260 if (rtm->rtm_version != RTM_VERSION) {
1261 warnx("routing message version %d not understood",
1262 rtm->rtm_version);
1263 return;
1264 }
1265 if (rtm->rtm_msglen > msglen) {
1266 warnx("message length mismatch, in packet %d, returned %d",
1267 rtm->rtm_msglen, msglen);
1268 }
1269 if (rtm->rtm_errno) {
1270 errno = rtm->rtm_errno;
1271 warn("message indicates error %d", errno);
1272 return;
1273 }
1274 cp = ((char *)(rtm + 1));
1275 if (rtm->rtm_addrs)
1276 for (i = 1; i; i <<= 1)
1277 if (i & rtm->rtm_addrs) {
1278 sa = (struct sockaddr *)cp;
1279 switch (i) {
1280 case RTA_DST:
1281 dst = sa;
1282 break;
1283 case RTA_GATEWAY:
1284 gate = sa;
1285 break;
1286 case RTA_NETMASK:
1287 mask = sa;
1288 break;
1289 case RTA_IFP:
1290 if (sa->sa_family == AF_LINK &&
1291 ((struct sockaddr_dl *)sa)->sdl_nlen)
1292 ifp = (struct sockaddr_dl *)sa;
1293 break;
1294 }
1295 ADVANCE(cp, sa);
1296 }
1297 if (dst && mask)
1298 mask->sa_family = dst->sa_family; /* XXX */
1299 if (dst)
1300 (void)printf("destination: %s\n", routename(dst));
1301 if (mask) {
1302 int savenflag = nflag;
1303
1304 nflag = 1;
1305 (void)printf(" mask: %s\n", routename(mask));
1306 nflag = savenflag;
1307 }
1308 if (gate && rtm->rtm_flags & RTF_GATEWAY)
1309 (void)printf(" gateway: %s\n", routename(gate));
1310 if (ifp)
1311 (void)printf(" interface: %.*s\n",
1312 ifp->sdl_nlen, ifp->sdl_data);
1313 (void)printf(" flags: ");
1314 bprintf(stdout, rtm->rtm_flags, routeflags);
1315
1316#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1317#define msec(u) (((u) + 500) / 1000) /* usec to msec */
1318
1319 (void) printf("\n%s\n", "\
1320 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire");
1321 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1322 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1323 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1324 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1325 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR));
1326 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT));
1327 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
1328 if (rtm->rtm_rmx.rmx_expire)
1329 rtm->rtm_rmx.rmx_expire -= time(0);
1330 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
1331#undef lock
1332#undef msec
1333#define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
1334 if (verbose)
1335 pmsg_common(rtm);
1336 else if (rtm->rtm_addrs &~ RTA_IGN) {
1337 (void) printf("sockaddrs: ");
1338 bprintf(stdout, rtm->rtm_addrs, addrnames);
1339 putchar('\n');
1340 }
1341#undef RTA_IGN
1342}
1343
1344void
1345pmsg_common(rtm)
1346 register struct rt_msghdr *rtm;
1347{
1348 (void) printf("\nlocks: ");
1349 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
1350 (void) printf(" inits: ");
1351 bprintf(stdout, rtm->rtm_inits, metricnames);
1352 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs);
1353}
1354
1355void
1356pmsg_addrs(cp, addrs)
1357 char *cp;
1358 int addrs;
1359{
1360 register struct sockaddr *sa;
1361 int i;
1362
1363 if (addrs == 0)
1364 return;
1365 (void) printf("\nsockaddrs: ");
1366 bprintf(stdout, addrs, addrnames);
1367 (void) putchar('\n');
1368 for (i = 1; i; i <<= 1)
1369 if (i & addrs) {
1370 sa = (struct sockaddr *)cp;
1371 (void) printf(" %s", routename(sa));
1372 ADVANCE(cp, sa);
1373 }
1374 (void) putchar('\n');
1375 (void) fflush(stdout);
1376}
1377
1378void
1379bprintf(fp, b, s)
1380 register FILE *fp;
1381 register int b;
1382 register u_char *s;
1383{
1384 register int i;
1385 int gotsome = 0;
1386
1387 if (b == 0)
1388 return;
1389 while ((i = *s++) != 0) {
1390 if (b & (1 << (i-1))) {
1391 if (gotsome == 0)
1392 i = '<';
1393 else
1394 i = ',';
1395 (void) putc(i, fp);
1396 gotsome = 1;
1397 for (; (i = *s) > 32; s++)
1398 (void) putc(i, fp);
1399 } else
1400 while (*s > 32)
1401 s++;
1402 }
1403 if (gotsome)
1404 (void) putc('>', fp);
1405}
1406
1407int
1408keyword(cp)
1409 char *cp;
1410{
1411 register struct keytab *kt = keywords;
1412
1413 while (kt->kt_cp && strcmp(kt->kt_cp, cp))
1414 kt++;
1415 return kt->kt_i;
1416}
1417
1418void
1419sodump(su, which)
1420 register sup su;
1421 char *which;
1422{
1423 switch (su->sa.sa_family) {
1424 case AF_LINK:
1425 (void) printf("%s: link %s; ",
1426 which, link_ntoa(&su->sdl));
1427 break;
1428 case AF_INET:
1429 (void) printf("%s: inet %s; ",
1430 which, inet_ntoa(su->sin.sin_addr));
1431 break;
1432#ifdef AT
1433 case AF_APPLETALK:
1434 (void) printf("%s: atalk %s; ",
1435 which, atalk_ntoa(su->sat.sat_addr));
1436 break;
1437#endif
1438#ifdef NS
1439 case AF_NS:
1440 (void) printf("%s: xns %s; ",
1441 which, ns_ntoa(su->sns.sns_addr));
1442 break;
1443#endif
1444 }
1445 (void) fflush(stdout);
1446}
1447
1448/* States*/
1449#define VIRGIN 0
1450#define GOTONE 1
1451#define GOTTWO 2
1452/* Inputs */
1453#define DIGIT (4*0)
1454#define END (4*1)
1455#define DELIM (4*2)
1456
1457void
1458sockaddr(addr, sa)
1459 register char *addr;
1460 register struct sockaddr *sa;
1461{
1462 register char *cp = (char *)sa;
1463 int size = sa->sa_len;
1464 char *cplim = cp + size;
1465 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
1466
1467 bzero(cp, size);
1468 cp++;
1469 do {
1470 if ((*addr >= '0') && (*addr <= '9')) {
1471 new = *addr - '0';
1472 } else if ((*addr >= 'a') && (*addr <= 'f')) {
1473 new = *addr - 'a' + 10;
1474 } else if ((*addr >= 'A') && (*addr <= 'F')) {
1475 new = *addr - 'A' + 10;
1476 } else if (*addr == 0)
1477 state |= END;
1478 else
1479 state |= DELIM;
1480 addr++;
1481 switch (state /* | INPUT */) {
1482 case GOTTWO | DIGIT:
1483 *cp++ = byte; /*FALLTHROUGH*/
1484 case VIRGIN | DIGIT:
1485 state = GOTONE; byte = new; continue;
1486 case GOTONE | DIGIT:
1487 state = GOTTWO; byte = new + (byte << 4); continue;
1488 default: /* | DELIM */
1489 state = VIRGIN; *cp++ = byte; byte = 0; continue;
1490 case GOTONE | END:
1491 case GOTTWO | END:
1492 *cp++ = byte; /* FALLTHROUGH */
1493 case VIRGIN | END:
1494 break;
1495 }
1496 break;
1497 } while (cp < cplim);
1498 sa->sa_len = cp - (char *)sa;
1499}
1500
1501#ifdef AT
1502int
1503atalk_aton(const char *text, struct at_addr *addr)
1504{
1505 u_int net, node;
1506
1507 if (sscanf(text, "%u.%u", &net, &node) != 2
1508 || net > 0xffff || node > 0xff)
1509 return(0);
1510 addr->s_net = htons(net);
1511 addr->s_node = node;
1512 return(1);
1513}
1514
1515char *
1516atalk_ntoa(struct at_addr at)
1517{
1518 static char buf[20];
1519
1520 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);
1521 return(buf);
1522}
1523#endif