Context Navigation

source: rtems-libbsd/freebsd/sbin/route/route.c @ 0073528

4.1155-freebsd-126-freebsd-12freebsd-9.3

Last change on this file since 0073528 was 0073528, checked in by Sebastian Huber <sebastian.huber@…>, on 12/20/13 at 13:25:06
ROUTE(8): Fix memory leak
Property mode set to `100644`
File size: 48.2 KB

Line
1	#include <machine/rtems-bsd-user-space.h>
2
3	/*
4	* Copyright (c) 1983, 1989, 1991, 1993
5	* The Regents of the University of California. All rights reserved.
6	*
7	* Redistribution and use in source and binary forms, with or without
8	* modification, are permitted provided that the following conditions
9	* are met:
10	* 1. Redistributions of source code must retain the above copyright
11	* notice, this list of conditions and the following disclaimer.
12	* 2. Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the distribution.
15	* 4. Neither the name of the University nor the names of its contributors
16	* may be used to endorse or promote products derived from this software
17	* without specific prior written permission.
18	*
19	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29	* SUCH DAMAGE.
30	*/
31
32	#ifndef lint
33	static const char copyright[] =
34	"@(#) Copyright (c) 1983, 1989, 1991, 1993\n\
35	The Regents of the University of California. All rights reserved.\n";
36	#endif /* not lint */
37
38	#ifndef lint
39	#if 0
40	static char sccsid[] = "@(#)route.c 8.6 (Berkeley) 4/28/95";
41	#endif
42	#endif /* not lint */
43
44	#ifdef __rtems__
45	#define __need_getopt_newlib
46	#include <getopt.h>
47	#include <machine/rtems-bsd-program.h>
48	#include <machine/rtems-bsd-commands.h>
49	#endif
50	#include <sys/cdefs.h>
51	__FBSDID("$FreeBSD$");
52
53	#include <rtems/bsd/sys/param.h>
54	#include <sys/file.h>
55	#include <sys/socket.h>
56	#include <sys/ioctl.h>
57	#include <sys/sysctl.h>
58	#include <rtems/bsd/sys/types.h>
59	#include <sys/queue.h>
60
61	#include <net/if.h>
62	#include <net/route.h>
63	#include <net/if_dl.h>
64	#include <netinet/in.h>
65	#include <netinet/if_ether.h>
66	#include <netatalk/at.h>
67	#include <arpa/inet.h>
68	#include <netdb.h>
69
70	#include <ctype.h>
71	#include <err.h>
72	#include <errno.h>
73	#include <paths.h>
74	#include <stdio.h>
75	#include <stdlib.h>
76	#include <string.h>
77	#include <sysexits.h>
78	#include <unistd.h>
79	#include <ifaddrs.h>
80
81	static const struct keytab {
82	const char *kt_cp;
83	int kt_i;
84	} keywords[] = {
85	#include "keywords.h"
86	{0, 0}
87	};
88
89	struct fibl {
90	TAILQ_ENTRY(fibl) fl_next;
91
92	int fl_num;
93	int fl_error;
94	int fl_errno;
95	};
96
97	struct rt_ctx {
98	union sockunion {
99	struct sockaddr sa;
100	struct sockaddr_in sin;
101	#ifdef INET6
102	struct sockaddr_in6 sin6;
103	#endif
104	struct sockaddr_at sat;
105	struct sockaddr_dl sdl;
106	struct sockaddr_inarp sinarp;
107	struct sockaddr_storage ss; /* added to avoid memory overrun */
108	} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp;
109
110	int pid, rtm_addrs;
111	int s;
112	int forcehost, forcenet, nflag, af, qflag, tflag;
113	int verbose, aflen;
114	int locking, lockrest, debugonly;
115	struct rt_metrics rt_metrics;
116	u_long rtm_inits;
117	uid_t uid;
118	int defaultfib;
119	int numfibs;
120	char domain[MAXHOSTNAMELEN + 1];
121	int domain_initialized;
122	int rtm_seq;
123	char rt_line[MAXHOSTNAMELEN + 1];
124	char net_line[MAXHOSTNAMELEN + 1];
125	struct {
126	struct rt_msghdr m_rtm;
127	char m_space[512];
128	} m_rtmsg;
129	TAILQ_HEAD(fibl_head_t, fibl) fibl_head;
130	};
131
132	#ifndef __rtems__
133	struct rt_ctx rt_ctx;
134	#endif /* __rtems__ */
135
136	typedef union sockunion *sup;
137
138	static int atalk_aton(const char , struct at_addr );
139	static char *atalk_ntoa(struct at_addr, char [20]);
140	static void bprintf(FILE , int, const char );
141	static void flushroutes(struct rt_ctx , int argc, char argv[]);
142	static int flushroutes_fib(struct rt_ctx *, int);
143	static int getaddr(struct rt_ctx , int, char , struct hostent **, int);
144	static int keyword(const char *);
145	static void inet_makenetandmask(struct rt_ctx , u_long, struct sockaddr_in , u_long);
146	#ifdef INET6
147	static int inet6_makenetandmask(struct rt_ctx , struct sockaddr_in6 , const char *);
148	#endif
149	static void interfaces(struct rt_ctx *);
150	static void mask_addr(struct rt_ctx *);
151	static void monitor(struct rt_ctx , int, char []);
152	static const char netname(struct rt_ctx , struct sockaddr *);
153	static void newroute(struct rt_ctx , int, char *);
154	static int newroute_fib(struct rt_ctx , int, char , int);
155	static void pmsg_addrs(struct rt_ctx , char , int, size_t);
156	static void pmsg_common(struct rt_ctx , struct rt_msghdr , size_t);
157	static int prefixlen(struct rt_ctx , const char );
158	static void print_getmsg(struct rt_ctx , struct rt_msghdr , int, int);
159	static void print_rtmsg(struct rt_ctx , struct rt_msghdr , size_t);
160	static const char routename(struct rt_ctx , struct sockaddr *);
161	static int rtmsg(struct rt_ctx *, int, int, int);
162	static void set_metric(struct rt_ctx , char , int);
163	static int set_sofib(struct rt_ctx *, int);
164	static int set_procfib(int);
165	static void sockaddr(char , struct sockaddr );
166	static void sodump(sup, const char *);
167	extern char *iso_ntoa(void);
168
169	static int fiboptlist_csv(struct rt_ctx , const char , struct fibl_head_t *);
170	static int fiboptlist_range(struct rt_ctx , const char , struct fibl_head_t *);
171
172	static void usage(const char *) __dead2;
173
174	void
175	usage(const char *cp)
176	{
177	if (cp != NULL)
178	warnx("bad keyword: %s", cp);
179	(void) fprintf(stderr,
180	"usage: route [-dnqtv] command [[modifiers] args]\n");
181	exit(EX_USAGE);
182	/* NOTREACHED */
183	}
184
185	#ifdef __rtems__
186	static int main(int argc, char *argv, struct rt_ctx c);
187
188	struct main_ctx {
189	int argc;
190	char **argv;
191	struct rt_ctx *c;
192	};
193
194	static int
195	call_main(void *ctx)
196	{
197	const struct main_ctx *mc = ctx;
198
199	return main(mc->argc, mc->argv, mc->c);
200	}
201
202	int rtems_bsd_command_route(int argc, char *argv[])
203	{
204	struct rt_ctx *c;
205	int exit_code;
206
207	c = calloc(1, sizeof(*c));
208	if (c != NULL) {
209	struct main_ctx mc;
210	struct fibl *fl;
211	struct fibl *tfl;
212
213	mc.argc = argc;
214	mc.argv = argv;
215	mc.c = c;
216
217	c->s = -1;
218	c->aflen = sizeof(struct sockaddr_in);
219	TAILQ_INIT(&c->fibl_head);
220
221	exit_code = rtems_bsd_program_call("route", call_main, &mc);
222
223	close(c->s);
224
225	TAILQ_FOREACH_SAFE(fl, &c->fibl_head, fl_next, tfl) {
226	free(fl);
227	}
228
229	free(c);
230	} else {
231	exit_code = EXIT_FAILURE;
232	}
233
234	return exit_code;
235	}
236
237	int
238	main(int argc, char *argv, struct rt_ctx c)
239	{
240	#else /* __rtems__ */
241	int
242	main(int argc, char **argv)
243	{
244	struct rt_ctx *c;
245	#endif /* __rtems__ */
246	int ch;
247	size_t len;
248	#ifdef __rtems__
249	struct getopt_data getopt_data;
250	memset(&getopt_data, 0, sizeof(getopt_data));
251	#define optind getopt_data.optind
252	#define optarg getopt_data.optarg
253	#define opterr getopt_data.opterr
254	#define optopt getopt_data.optopt
255	#define getopt(argc, argv, opt) getopt_r(argc, argv, "+" opt, &getopt_data)
256	#endif /* __rtems__ */
257
258	#ifndef __rtems__
259	c = &rt_ctx;
260	c->aflen = sizeof (struct sockaddr_in);
261	#endif /* __rtems__ */
262
263	if (argc < 2)
264	usage(NULL);
265
266	while ((ch = getopt(argc, argv, "nqdtv")) != -1)
267	switch(ch) {
268	case 'n':
269	c->nflag = 1;
270	break;
271	case 'q':
272	c->qflag = 1;
273	break;
274	case 'v':
275	c->verbose = 1;
276	break;
277	case 't':
278	c->tflag = 1;
279	break;
280	case 'd':
281	c->debugonly = 1;
282	break;
283	case '?':
284	default:
285	usage(NULL);
286	}
287	argc -= optind;
288	argv += optind;
289
290	c->pid = getpid();
291	c->uid = geteuid();
292	if (c->tflag)
293	c->s = open(_PATH_DEVNULL, O_WRONLY, 0);
294	else
295	c->s = socket(PF_ROUTE, SOCK_RAW, 0);
296	if (c->s < 0)
297	err(EX_OSERR, "socket");
298
299	len = sizeof(c->numfibs);
300	if (sysctlbyname("net.fibs", (void *)&c->numfibs, &len, NULL, 0) == -1)
301	c->numfibs = -1;
302
303	len = sizeof(c->defaultfib);
304	if (c->numfibs != -1 &&
305	sysctlbyname("net.my_fibnum", (void *)&c->defaultfib, &len, NULL,
306	0) == -1)
307	c->defaultfib = -1;
308
309	if (*argv != NULL)
310	switch (keyword(*argv)) {
311	case K_GET:
312	case K_SHOW:
313	c->uid = 0;
314	/* FALLTHROUGH */
315
316	case K_CHANGE:
317	case K_ADD:
318	case K_DEL:
319	case K_DELETE:
320	newroute(c, argc, argv);
321	/* NOTREACHED */
322
323	case K_MONITOR:
324	monitor(c, argc, argv);
325	/* NOTREACHED */
326
327	case K_FLUSH:
328	flushroutes(c, argc, argv);
329	exit(0);
330	/* NOTREACHED */
331	}
332	usage(*argv);
333	/* NOTREACHED */
334	}
335
336	static int
337	set_sofib(struct rt_ctx *c, int fib)
338	{
339
340	if (fib < 0)
341	return (0);
342	return (setsockopt(c->s, SOL_SOCKET, SO_SETFIB, (void *)&fib,
343	sizeof(fib)));
344	}
345
346	static int
347	set_procfib(int fib)
348	{
349
350	if (fib < 0)
351	return (0);
352	return (setfib(fib));
353	}
354
355	static int
356	fiboptlist_range(struct rt_ctx c, const char arg, struct fibl_head_t *flh)
357	{
358	struct fibl *fl;
359	char str0, str, token, endptr;
360	int fib[2], i, error;
361
362	str0 = str = strdup(arg);
363	error = 0;
364	i = 0;
365	while ((token = strsep(&str, "-")) != NULL) {
366	switch (i) {
367	case 0:
368	case 1:
369	errno = 0;
370	fib[i] = strtol(token, &endptr, 0);
371	if (errno == 0) {
372	if (*endptr != '\0' \|\|
373	fib[i] < 0 \|\|
374	(c->numfibs != -1 && fib[i] > c->numfibs - 1))
375	errno = EINVAL;
376	}
377	if (errno)
378	error = 1;
379	break;
380	default:
381	error = 1;
382	}
383	if (error)
384	goto fiboptlist_range_ret;
385	i++;
386	}
387	if (fib[0] >= fib[1]) {
388	error = 1;
389	goto fiboptlist_range_ret;
390	}
391	for (i = fib[0]; i <= fib[1]; i++) {
392	fl = calloc(1, sizeof(*fl));
393	if (fl == NULL) {
394	error = 1;
395	goto fiboptlist_range_ret;
396	}
397	fl->fl_num = i;
398	TAILQ_INSERT_TAIL(flh, fl, fl_next);
399	}
400	fiboptlist_range_ret:
401	free(str0);
402	return (error);
403	}
404
405	#define ALLSTRLEN 64
406	static int
407	fiboptlist_csv(struct rt_ctx c, const char arg, struct fibl_head_t *flh)
408	{
409	struct fibl *fl;
410	char str0, str, token, endptr;
411	int fib, error;
412
413	if (strcmp("all", arg) == 0) {
414	str0 = str = calloc(1, ALLSTRLEN);
415	if (str == NULL) {
416	error = 1;
417	goto fiboptlist_csv_ret;
418	}
419	if (c->numfibs > 1)
420	snprintf(str, ALLSTRLEN - 1, "%d-%d", 0, c->numfibs - 1);
421	else
422	snprintf(str, ALLSTRLEN - 1, "%d", 0);
423	} else if (strcmp("default", arg) == 0) {
424	str0 = str = calloc(1, ALLSTRLEN);
425	if (str == NULL) {
426	error = 1;
427	goto fiboptlist_csv_ret;
428	}
429	snprintf(str, ALLSTRLEN - 1, "%d", c->defaultfib);
430	} else
431	str0 = str = strdup(arg);
432
433	error = 0;
434	while ((token = strsep(&str, ",")) != NULL) {
435	if (*token != '-' && strchr(token, '-') != NULL) {
436	error = fiboptlist_range(c, token, flh);
437	if (error)
438	goto fiboptlist_csv_ret;
439	} else {
440	errno = 0;
441	fib = strtol(token, &endptr, 0);
442	if (errno == 0) {
443	if (*endptr != '\0' \|\|
444	fib < 0 \|\|
445	(c->numfibs != -1 && fib > c->numfibs - 1))
446	errno = EINVAL;
447	}
448	if (errno) {
449	error = 1;
450	goto fiboptlist_csv_ret;
451	}
452	fl = calloc(1, sizeof(*fl));
453	if (fl == NULL) {
454	error = 1;
455	goto fiboptlist_csv_ret;
456	}
457	fl->fl_num = fib;
458	TAILQ_INSERT_TAIL(flh, fl, fl_next);
459	}
460	}
461	fiboptlist_csv_ret:
462	free(str0);
463	return (error);
464	}
465
466	/*
467	* Purge all entries in the routing tables not
468	* associated with network interfaces.
469	*/
470	static void
471	flushroutes(struct rt_ctx c, int argc, char argv[])
472	{
473	struct fibl *fl;
474	int error;
475
476	if (c->uid != 0 && !c->debugonly) {
477	errx(EX_NOPERM, "must be root to alter routing table");
478	}
479	shutdown(c->s, SHUT_RD); /* Don't want to read back our messages */
480
481	TAILQ_INIT(&c->fibl_head);
482	while (argc > 1) {
483	argc--;
484	argv++;
485	if (**argv != '-')
486	usage(*argv);
487	switch (keyword(*argv + 1)) {
488	case K_INET:
489	c->af = AF_INET;
490	break;
491	#ifdef INET6
492	case K_INET6:
493	c->af = AF_INET6;
494	break;
495	#endif
496	case K_ATALK:
497	c->af = AF_APPLETALK;
498	break;
499	case K_LINK:
500	c->af = AF_LINK;
501	break;
502	case K_FIB:
503	if (!--argc)
504	usage(*argv);
505	error = fiboptlist_csv(c, *++argv, &c->fibl_head);
506	if (error)
507	errx(EX_USAGE, "invalid fib number: %s", *argv);
508	break;
509	default:
510	usage(*argv);
511	}
512	}
513	if (TAILQ_EMPTY(&c->fibl_head)) {
514	error = fiboptlist_csv(c, "default", &c->fibl_head);
515	if (error)
516	errx(EX_OSERR, "fiboptlist_csv failed.");
517	}
518	TAILQ_FOREACH(fl, &c->fibl_head, fl_next)
519	flushroutes_fib(c, fl->fl_num);
520	}
521
522	static int
523	flushroutes_fib(struct rt_ctx *c, int fib)
524	{
525	struct rt_msghdr *rtm;
526	size_t needed;
527	char buf, next, *lim;
528	int mib[6], rlen, seqno, count = 0;
529	int error;
530
531	error = set_sofib(c, fib);
532	error += set_procfib(fib);
533	if (error) {
534	warn("fib number %d is ignored", fib);
535	return (error);
536	}
537
538	retry:
539	mib[0] = CTL_NET;
540	mib[1] = PF_ROUTE;
541	mib[2] = 0; /* protocol */
542	mib[3] = 0; /* wildcard address family */
543	mib[4] = NET_RT_DUMP;
544	mib[5] = 0; /* no flags */
545	if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
546	err(EX_OSERR, "route-sysctl-estimate");
547	if ((buf = malloc(needed)) == NULL && needed != 0)
548	errx(EX_OSERR, "malloc failed");
549	if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
550	if (errno == ENOMEM && count++ < 10) {
551	warnx("Routing table grew, retrying");
552	sleep(1);
553	free(buf);
554	goto retry;
555	}
556	err(EX_OSERR, "route-sysctl-get");
557	}
558	lim = buf + needed;
559	if (c->verbose)
560	(void) printf("Examining routing table from sysctl\n");
561	seqno = 0; /* ??? */
562	for (next = buf; next < lim; next += rtm->rtm_msglen) {
563	rtm = (struct rt_msghdr *)next;
564	if (c->verbose)
565	print_rtmsg(c, rtm, rtm->rtm_msglen);
566	if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
567	continue;
568	if (c->af != 0) {
569	struct sockaddr sa = (struct sockaddr )(rtm + 1);
570
571	if (sa->sa_family != c->af)
572	continue;
573	}
574	if (c->debugonly)
575	continue;
576	rtm->rtm_type = RTM_DELETE;
577	rtm->rtm_seq = seqno;
578	rlen = write(c->s, next, rtm->rtm_msglen);
579	if (rlen < 0 && errno == EPERM)
580	err(1, "write to routing socket");
581	if (rlen < (int)rtm->rtm_msglen) {
582	warn("write to routing socket");
583	(void) printf("got only %d for rlen\n", rlen);
584	free(buf);
585	goto retry;
586	break;
587	}
588	seqno++;
589	if (c->qflag)
590	continue;
591	if (c->verbose)
592	print_rtmsg(c, rtm, rlen);
593	else {
594	struct sockaddr sa = (struct sockaddr )(rtm + 1);
595
596	printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ?
597	routename(c, sa) : netname(c, sa));
598	sa = (struct sockaddr )(SA_SIZE(sa) + (char )sa);
599	printf("%-20.20s ", routename(c, sa));
600	if (fib >= 0)
601	printf("-fib %-3d ", fib);
602	printf("done\n");
603	}
604	}
605	free(buf);
606	return (error);
607	}
608
609	static const char *
610	routename(struct rt_ctx c, struct sockaddr sa)
611	{
612	const char *cp;
613	char atalk_buf[20];
614	struct hostent *hp;
615	int n;
616
617	if (c->domain_initialized) {
618	c->domain_initialized = 1;
619	if (gethostname(c->domain, MAXHOSTNAMELEN) == 0 &&
620	(cp = strchr(c->domain, '.'))) {
621	c->domain[MAXHOSTNAMELEN] = '\0';
622	(void) strcpy(c->domain, cp + 1);
623	} else
624	c->domain[0] = 0;
625	}
626
627	if (sa->sa_len == 0)
628	strcpy(c->rt_line, "default");
629	else switch (sa->sa_family) {
630
631	case AF_INET:
632	{ struct in_addr in;
633	in = ((struct sockaddr_in *)sa)->sin_addr;
634
635	cp = NULL;
636	if (in.s_addr == INADDR_ANY \|\| sa->sa_len < 4)
637	cp = "default";
638	if (cp == NULL && !c->nflag) {
639	hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
640	AF_INET);
641	if (hp != NULL) {
642	char *cptr;
643	cptr = strchr(hp->h_name, '.');
644	if (cptr != NULL &&
645	strcmp(cptr + 1, c->domain) == 0)
646	*cptr = '\0';
647	cp = hp->h_name;
648	}
649	}
650	if (cp != NULL) {
651	strncpy(c->rt_line, cp, sizeof(c->rt_line) - 1);
652	c->rt_line[sizeof(c->rt_line) - 1] = '\0';
653	} else
654	(void) sprintf(c->rt_line, "%s", inet_ntoa(in));
655	break;
656	}
657
658	#ifdef INET6
659	case AF_INET6:
660	{
661	struct sockaddr_in6 sin6; /* use static var for safety */
662	int niflags = 0;
663
664	memset(&sin6, 0, sizeof(sin6));
665	memcpy(&sin6, sa, sa->sa_len);
666	sin6.sin6_len = sizeof(struct sockaddr_in6);
667	sin6.sin6_family = AF_INET6;
668	#ifdef __KAME__
669	if (sa->sa_len == sizeof(struct sockaddr_in6) &&
670	(IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) \|\|
671	IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) \|\|
672	IN6_IS_ADDR_MC_NODELOCAL(&sin6.sin6_addr)) &&
673	sin6.sin6_scope_id == 0) {
674	sin6.sin6_scope_id =
675	ntohs((u_int16_t )&sin6.sin6_addr.s6_addr[2]);
676	sin6.sin6_addr.s6_addr[2] = 0;
677	sin6.sin6_addr.s6_addr[3] = 0;
678	}
679	#endif
680	if (c->nflag)
681	niflags \|= NI_NUMERICHOST;
682	if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
683	c->rt_line, sizeof(c->rt_line), NULL, 0, niflags) != 0)
684	strncpy(c->rt_line, "invalid", sizeof(c->rt_line));
685
686	return(c->rt_line);
687	}
688	#endif
689
690	case AF_APPLETALK:
691	(void) snprintf(c->rt_line, sizeof(c->rt_line), "atalk %s",
692	atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr, atalk_buf));
693	break;
694
695	case AF_LINK:
696	return (link_ntoa((struct sockaddr_dl *)sa));
697
698	default:
699	{
700	u_short sp = (u_short )sa;
701	u_short *splim = sp + ((sa->sa_len + 1) >> 1);
702	char *cps = c->rt_line + sprintf(c->rt_line, "(%d)", sa->sa_family);
703	char *cpe = c->rt_line + sizeof(c->rt_line);
704
705	while (++sp < splim && cps < cpe) /* start with sa->sa_data */
706	if ((n = snprintf(cps, cpe - cps, " %x", *sp)) > 0)
707	cps += n;
708	else
709	*cps = '\0';
710	break;
711	}
712	}
713	return (c->rt_line);
714	}
715
716	/*
717	* Return the name of the network whose address is given.
718	* The address is assumed to be that of a net or subnet, not a host.
719	*/
720	const char *
721	netname(struct rt_ctx c, struct sockaddr sa)
722	{
723	const char *cp = NULL;
724	char atalk_buf[20];
725	struct netent *np = NULL;
726	u_long net, mask;
727	u_long i;
728	int n, subnetshift;
729
730	switch (sa->sa_family) {
731
732	case AF_INET:
733	{ struct in_addr in;
734	in = ((struct sockaddr_in *)sa)->sin_addr;
735
736	i = in.s_addr = ntohl(in.s_addr);
737	if (in.s_addr == 0)
738	cp = "default";
739	else if (!c->nflag) {
740	if (IN_CLASSA(i)) {
741	mask = IN_CLASSA_NET;
742	subnetshift = 8;
743	} else if (IN_CLASSB(i)) {
744	mask = IN_CLASSB_NET;
745	subnetshift = 8;
746	} else {
747	mask = IN_CLASSC_NET;
748	subnetshift = 4;
749	}
750	/*
751	* If there are more bits than the standard mask
752	* would suggest, subnets must be in use.
753	* Guess at the subnet mask, assuming reasonable
754	* width subnet fields.
755	*/
756	while (in.s_addr &~ mask)
757	mask = (long)mask >> subnetshift;
758	net = in.s_addr & mask;
759	while ((mask & 1) == 0)
760	mask >>= 1, net >>= 1;
761	np = getnetbyaddr(net, AF_INET);
762	if (np != NULL)
763	cp = np->n_name;
764	}
765	#define C(x) (unsigned)((x) & 0xff)
766	if (cp != NULL)
767	strncpy(c->net_line, cp, sizeof(c->net_line));
768	else if ((in.s_addr & 0xffffff) == 0)
769	(void) sprintf(c->net_line, "%u", C(in.s_addr >> 24));
770	else if ((in.s_addr & 0xffff) == 0)
771	(void) sprintf(c->net_line, "%u.%u", C(in.s_addr >> 24),
772	C(in.s_addr >> 16));
773	else if ((in.s_addr & 0xff) == 0)
774	(void) sprintf(c->net_line, "%u.%u.%u", C(in.s_addr >> 24),
775	C(in.s_addr >> 16), C(in.s_addr >> 8));
776	else
777	(void) sprintf(c->net_line, "%u.%u.%u.%u", C(in.s_addr >> 24),
778	C(in.s_addr >> 16), C(in.s_addr >> 8),
779	C(in.s_addr));
780	#undef C
781	break;
782	}
783
784	#ifdef INET6
785	case AF_INET6:
786	{
787	struct sockaddr_in6 sin6; /* use static var for safety */
788	int niflags = 0;
789
790	memset(&sin6, 0, sizeof(sin6));
791	memcpy(&sin6, sa, sa->sa_len);
792	sin6.sin6_len = sizeof(struct sockaddr_in6);
793	sin6.sin6_family = AF_INET6;
794	#ifdef __KAME__
795	if (sa->sa_len == sizeof(struct sockaddr_in6) &&
796	(IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) \|\|
797	IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) \|\|
798	IN6_IS_ADDR_MC_NODELOCAL(&sin6.sin6_addr)) &&
799	sin6.sin6_scope_id == 0) {
800	sin6.sin6_scope_id =
801	ntohs((u_int16_t )&sin6.sin6_addr.s6_addr[2]);
802	sin6.sin6_addr.s6_addr[2] = 0;
803	sin6.sin6_addr.s6_addr[3] = 0;
804	}
805	#endif
806	if (c->nflag)
807	niflags \|= NI_NUMERICHOST;
808	if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
809	c->net_line, sizeof(c->net_line), NULL, 0, niflags) != 0)
810	strncpy(c->net_line, "invalid", sizeof(c->net_line));
811
812	return(c->net_line);
813	}
814	#endif
815
816	case AF_APPLETALK:
817	(void) snprintf(c->net_line, sizeof(c->net_line), "atalk %s",
818	atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr, atalk_buf));
819	break;
820
821	case AF_LINK:
822	return (link_ntoa((struct sockaddr_dl *)sa));
823
824
825	default:
826	{
827	u_short sp = (u_short )sa->sa_data;
828	u_short *splim = sp + ((sa->sa_len + 1)>>1);
829	char *cps = c->net_line + sprintf(c->net_line, "af %d:", sa->sa_family);
830	char *cpe = c->net_line + sizeof(c->net_line);
831
832	while (sp < splim && cps < cpe)
833	if ((n = snprintf(cps, cpe - cps, " %x", *sp++)) > 0)
834	cps += n;
835	else
836	*cps = '\0';
837	break;
838	}
839	}
840	return (c->net_line);
841	}
842
843	static void
844	set_metric(struct rt_ctx c, char value, int key)
845	{
846	int flag = 0;
847	u_long noval, *valp = &noval;
848
849	switch (key) {
850	#define caseof(x, y, z) case x: valp = &c->rt_metrics.z; flag = y; break
851	caseof(K_MTU, RTV_MTU, rmx_mtu);
852	caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
853	caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
854	caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
855	caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
856	caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
857	caseof(K_RTT, RTV_RTT, rmx_rtt);
858	caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
859	caseof(K_WEIGHT, RTV_WEIGHT, rmx_weight);
860	}
861	c->rtm_inits \|= flag;
862	if (c->lockrest \|\| c->locking)
863	c->rt_metrics.rmx_locks \|= flag;
864	if (c->locking)
865	c->locking = 0;
866	*valp = atoi(value);
867	}
868
869	#define F_ISHOST 0x01
870	#define F_FORCENET 0x02
871	#define F_FORCEHOST 0x04
872	#define F_PROXY 0x08
873	#define F_INTERFACE 0x10
874
875	static void
876	newroute(struct rt_ctx c, int argc, char *argv)
877	{
878	struct hostent *hp;
879	struct fibl *fl;
880	char *cmd;
881	const char dest, gateway, *errmsg;
882	int key, error, flags, nrflags, fibnum;
883
884	if (c->uid != 0) {
885	errx(EX_NOPERM, "must be root to alter routing table");
886	}
887
888	dest = NULL;
889	gateway = NULL;
890	flags = RTF_STATIC;
891	nrflags = 0;
892	hp = NULL;
893	TAILQ_INIT(&c->fibl_head);
894
895	cmd = argv[0];
896	if (cmd != 'g' && cmd != 's')
897	shutdown(c->s, SHUT_RD); /* Don't want to read back our messages */
898
899	while (--argc > 0) {
900	if (**(++argv)== '-') {
901	switch (key = keyword(1 + *argv)) {
902	case K_LINK:
903	c->af = AF_LINK;
904	c->aflen = sizeof(struct sockaddr_dl);
905	break;
906	case K_INET:
907	c->af = AF_INET;
908	c->aflen = sizeof(struct sockaddr_in);
909	break;
910	#ifdef INET6
911	case K_INET6:
912	c->af = AF_INET6;
913	c->aflen = sizeof(struct sockaddr_in6);
914	break;
915	#endif
916	case K_ATALK:
917	c->af = AF_APPLETALK;
918	c->aflen = sizeof(struct sockaddr_at);
919	break;
920	case K_SA:
921	c->af = PF_ROUTE;
922	c->aflen = sizeof(union sockunion);
923	break;
924	case K_IFACE:
925	case K_INTERFACE:
926	nrflags \|= F_INTERFACE;
927	break;
928	case K_NOSTATIC:
929	flags &= ~RTF_STATIC;
930	break;
931	case K_LOCK:
932	c->locking = 1;
933	break;
934	case K_LOCKREST:
935	c->lockrest = 1;
936	break;
937	case K_HOST:
938	nrflags \|= F_FORCEHOST;
939	break;
940	case K_REJECT:
941	flags \|= RTF_REJECT;
942	break;
943	case K_BLACKHOLE:
944	flags \|= RTF_BLACKHOLE;
945	break;
946	case K_PROTO1:
947	flags \|= RTF_PROTO1;
948	break;
949	case K_PROTO2:
950	flags \|= RTF_PROTO2;
951	break;
952	case K_PROXY:
953	nrflags \|= F_PROXY;
954	break;
955	case K_XRESOLVE:
956	flags \|= RTF_XRESOLVE;
957	break;
958	case K_STATIC:
959	flags \|= RTF_STATIC;
960	break;
961	case K_STICKY:
962	flags \|= RTF_STICKY;
963	break;
964	case K_NOSTICK:
965	flags &= ~RTF_STICKY;
966	break;
967	case K_FIB:
968	if (!--argc)
969	usage(NULL);
970	error = fiboptlist_csv(c, *++argv, &c->fibl_head);
971	if (error)
972	errx(EX_USAGE,
973	"invalid fib number: %s", *argv);
974	break;
975	case K_IFA:
976	if (!--argc)
977	usage(NULL);
978	getaddr(c, RTA_IFA, *++argv, 0, nrflags);
979	break;
980	case K_IFP:
981	if (!--argc)
982	usage(NULL);
983	getaddr(c, RTA_IFP, *++argv, 0, nrflags);
984	break;
985	case K_GENMASK:
986	if (!--argc)
987	usage(NULL);
988	getaddr(c, RTA_GENMASK, *++argv, 0, nrflags);
989	break;
990	case K_GATEWAY:
991	if (!--argc)
992	usage(NULL);
993	getaddr(c, RTA_GATEWAY, *++argv, 0, nrflags);
994	gateway = *argv;
995	break;
996	case K_DST:
997	if (!--argc)
998	usage(NULL);
999	if (getaddr(c, RTA_DST, *++argv, &hp, nrflags))
1000	nrflags \|= F_ISHOST;
1001	dest = *argv;
1002	break;
1003	case K_NETMASK:
1004	if (!--argc)
1005	usage(NULL);
1006	getaddr(c, RTA_NETMASK, *++argv, 0, nrflags);
1007	/* FALLTHROUGH */
1008	case K_NET:
1009	nrflags \|= F_FORCENET;
1010	break;
1011	case K_PREFIXLEN:
1012	if (!--argc)
1013	usage(NULL);
1014	if (prefixlen(c, *++argv) == -1) {
1015	nrflags &= ~F_FORCENET;
1016	nrflags \|= F_ISHOST;
1017	} else {
1018	nrflags \|= F_FORCENET;
1019	nrflags &= ~F_ISHOST;
1020	}
1021	break;
1022	case K_MTU:
1023	case K_HOPCOUNT:
1024	case K_EXPIRE:
1025	case K_RECVPIPE:
1026	case K_SENDPIPE:
1027	case K_SSTHRESH:
1028	case K_RTT:
1029	case K_RTTVAR:
1030	case K_WEIGHT:
1031	if (!--argc)
1032	usage(NULL);
1033	set_metric(c, *++argv, key);
1034	break;
1035	default:
1036	usage(1+*argv);
1037	}
1038	} else {
1039	if ((c->rtm_addrs & RTA_DST) == 0) {
1040	dest = *argv;
1041	if (getaddr(c, RTA_DST, *argv, &hp, nrflags))
1042	nrflags \|= F_ISHOST;
1043	} else if ((c->rtm_addrs & RTA_GATEWAY) == 0) {
1044	gateway = *argv;
1045	getaddr(c, RTA_GATEWAY, *argv, &hp, nrflags);
1046	} else {
1047	getaddr(c, RTA_NETMASK, *argv, 0, nrflags);
1048	nrflags \|= F_FORCENET;
1049	}
1050	}
1051	}
1052
1053	if (nrflags & F_FORCEHOST) {
1054	nrflags \|= F_ISHOST;
1055	#ifdef INET6
1056	if (c->af == AF_INET6) {
1057	c->rtm_addrs &= ~RTA_NETMASK;
1058	memset((void *)&c->so_mask, 0, sizeof(c->so_mask));
1059	}
1060	#endif
1061	}
1062	if (nrflags & F_FORCENET)
1063	nrflags &= ~F_ISHOST;
1064	flags \|= RTF_UP;
1065	if (nrflags & F_ISHOST)
1066	flags \|= RTF_HOST;
1067	if ((nrflags & F_INTERFACE) == 0)
1068	flags \|= RTF_GATEWAY;
1069	if (nrflags & F_PROXY) {
1070	c->so_dst.sinarp.sin_other = SIN_PROXY;
1071	flags \|= RTF_ANNOUNCE;
1072	}
1073	if (dest == NULL)
1074	dest = "";
1075	if (gateway == NULL)
1076	gateway = "";
1077
1078	if (TAILQ_EMPTY(&c->fibl_head)) {
1079	error = fiboptlist_csv(c, "default", &c->fibl_head);
1080	if (error)
1081	errx(EX_OSERR, "fiboptlist_csv failed.");
1082	}
1083	error = 0;
1084	TAILQ_FOREACH(fl, &c->fibl_head, fl_next) {
1085	fl->fl_error = newroute_fib(c, fl->fl_num, cmd, flags);
1086	if (fl->fl_error)
1087	fl->fl_errno = errno;
1088	error += fl->fl_error;
1089	}
1090	if (cmd == 'g' \|\| cmd == 's')
1091	exit(error);
1092
1093	error = 0;
1094	if (!c->qflag) {
1095	fibnum = 0;
1096	TAILQ_FOREACH(fl, &c->fibl_head, fl_next) {
1097	if (fl->fl_error == 0)
1098	fibnum++;
1099	}
1100	if (fibnum > 0) {
1101	int firstfib = 1;
1102
1103	printf("%s %s %s", cmd,
1104	(nrflags & F_ISHOST) ? "host" : "net", dest);
1105	if (*gateway)
1106	printf(": gateway %s", gateway);
1107
1108	if (c->numfibs > 1) {
1109	TAILQ_FOREACH(fl, &c->fibl_head, fl_next) {
1110	if (fl->fl_error == 0
1111	&& fl->fl_num >= 0) {
1112	if (firstfib) {
1113	printf(" fib ");
1114	firstfib = 0;
1115	}
1116	printf("%d", fl->fl_num);
1117	if (fibnum-- > 1)
1118	printf(",");
1119	}
1120	}
1121	}
1122	printf("\n");
1123	}
1124
1125	fibnum = 0;
1126	TAILQ_FOREACH(fl, &c->fibl_head, fl_next) {
1127	if (fl->fl_error != 0) {
1128	printf("%s %s %s", cmd, (nrflags & F_ISHOST)
1129	? "host" : "net", dest);
1130	if (*gateway)
1131	printf(": gateway %s", gateway);
1132
1133	if (fl->fl_num >= 0)
1134	printf(" fib %d", fl->fl_num);
1135
1136	switch (fl->fl_errno) {
1137	case ESRCH:
1138	errmsg = "not in table";
1139	break;
1140	case EBUSY:
1141	errmsg = "entry in use";
1142	break;
1143	case ENOBUFS:
1144	errmsg = "not enough memory";
1145	break;
1146	case EADDRINUSE:
1147	/*
1148	* handle recursion avoidance
1149	* in rt_setgate()
1150	*/
1151	errmsg = "gateway uses the same route";
1152	break;
1153	case EEXIST:
1154	errmsg = "route already in table";
1155	break;
1156	default:
1157	errmsg = strerror(fl->fl_errno);
1158	break;
1159	}
1160	printf(": %s\n", errmsg);
1161	error = 1;
1162	}
1163	}
1164	}
1165	exit(error);
1166	}
1167
1168	static int
1169	newroute_fib(struct rt_ctx c, int fib, char cmd, int flags)
1170	{
1171	int error;
1172
1173	error = set_sofib(c, fib);
1174	if (error) {
1175	warn("fib number %d is ignored", fib);
1176	return (error);
1177	}
1178
1179	error = rtmsg(c, *cmd, flags, fib);
1180	return (error);
1181	}
1182
1183	static void
1184	inet_makenetandmask(struct rt_ctx c, u_long net, struct sockaddr_in sin, u_long bits)
1185	{
1186	u_long addr, mask = 0;
1187	char *cp;
1188
1189	c->rtm_addrs \|= RTA_NETMASK;
1190	/*
1191	* XXX: This approach unable to handle 0.0.0.1/32 correctly
1192	* as inet_network() converts 0.0.0.1 and 1 equally.
1193	*/
1194	if (net <= 0xff)
1195	addr = net << IN_CLASSA_NSHIFT;
1196	else if (net <= 0xffff)
1197	addr = net << IN_CLASSB_NSHIFT;
1198	else if (net <= 0xffffff)
1199	addr = net << IN_CLASSC_NSHIFT;
1200	else
1201	addr = net;
1202	/*
1203	* If no /xx was specified we must calculate the
1204	* CIDR address.
1205	*/
1206	if ((bits == 0) && (addr != 0)) {
1207	u_long i, j;
1208	for(i=0,j=0xff; i<4; i++) {
1209	if (addr & j) {
1210	break;
1211	}
1212	j <<= 8;
1213	}
1214	/* i holds the first non zero bit */
1215	bits = 32 - (i*8);
1216	}
1217	if (bits != 0)
1218	mask = 0xffffffff << (32 - bits);
1219
1220	sin->sin_addr.s_addr = htonl(addr);
1221	sin = &c->so_mask.sin;
1222	sin->sin_addr.s_addr = htonl(mask);
1223	sin->sin_len = 0;
1224	sin->sin_family = 0;
1225	cp = (char *)(&sin->sin_addr + 1);
1226	while (--cp == 0 && cp > (char )sin)
1227	;
1228	sin->sin_len = 1 + cp - (char *)sin;
1229	}
1230
1231	#ifdef INET6
1232	/*
1233	* XXX the function may need more improvement...
1234	*/
1235	static int
1236	inet6_makenetandmask(struct rt_ctx c, struct sockaddr_in6 sin6, const char *plen)
1237	{
1238	struct in6_addr in6;
1239
1240	if (plen == NULL) {
1241	if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
1242	sin6->sin6_scope_id == 0) {
1243	plen = "0";
1244	} else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
1245	/* aggregatable global unicast - RFC2374 */
1246	memset(&in6, 0, sizeof(in6));
1247	if (!memcmp(&sin6->sin6_addr.s6_addr[8],
1248	&in6.s6_addr[8], 8))
1249	plen = "64";
1250	}
1251	}
1252
1253	if (plen == NULL \|\| strcmp(plen, "128") == 0)
1254	return (1);
1255	c->rtm_addrs \|= RTA_NETMASK;
1256	prefixlen(c, plen);
1257	return (0);
1258	}
1259	#endif
1260
1261	/*
1262	* Interpret an argument as a network address of some kind,
1263	* returning 1 if a host address, 0 if a network address.
1264	*/
1265	static int
1266	getaddr(struct rt_ctx c, int which, char str, struct hostent **hpp, int nrflags)
1267	{
1268	sup su;
1269	struct hostent *hp;
1270	struct netent *np;
1271	u_long val;
1272	char *q;
1273	int afamily; /* local copy of af so we can change it */
1274
1275	if (c->af == 0) {
1276	c->af = AF_INET;
1277	c->aflen = sizeof(struct sockaddr_in);
1278	}
1279	afamily = c->af;
1280	c->rtm_addrs \|= which;
1281	switch (which) {
1282	case RTA_DST:
1283	su = &c->so_dst;
1284	break;
1285	case RTA_GATEWAY:
1286	su = &c->so_gate;
1287	if (nrflags & F_INTERFACE) {
1288	struct ifaddrs ifap, ifa;
1289	struct sockaddr_dl *sdl = NULL;
1290
1291	if (getifaddrs(&ifap))
1292	err(1, "getifaddrs");
1293
1294	for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
1295	if (ifa->ifa_addr->sa_family != AF_LINK)
1296	continue;
1297
1298	if (strcmp(str, ifa->ifa_name) != 0)
1299	continue;
1300
1301	sdl = (struct sockaddr_dl *)ifa->ifa_addr;
1302	}
1303	/* If we found it, then use it */
1304	if (sdl != NULL) {
1305	/*
1306	* Copy is safe since we have a
1307	* sockaddr_storage member in sockunion{}.
1308	* Note that we need to copy before calling
1309	* freeifaddrs().
1310	*/
1311	memcpy(&su->sdl, sdl, sdl->sdl_len);
1312	}
1313	freeifaddrs(ifap);
1314	if (sdl != NULL)
1315	return(1);
1316	}
1317	break;
1318	case RTA_NETMASK:
1319	su = &c->so_mask;
1320	break;
1321	case RTA_GENMASK:
1322	su = &c->so_genmask;
1323	break;
1324	case RTA_IFP:
1325	su = &c->so_ifp;
1326	afamily = AF_LINK;
1327	break;
1328	case RTA_IFA:
1329	su = &c->so_ifa;
1330	break;
1331	default:
1332	usage("internal error");
1333	/NOTREACHED/
1334	}
1335	su->sa.sa_len = c->aflen;
1336	su->sa.sa_family = afamily; /* cases that don't want it have left already */
1337	if (strcmp(str, "default") == 0) {
1338	/*
1339	* Default is net 0.0.0.0/0
1340	*/
1341	switch (which) {
1342	case RTA_DST:
1343	c->forcenet++;
1344	#if 0
1345	bzero(su, sizeof(su)); / for readability */
1346	#endif
1347	getaddr(c, RTA_NETMASK, str, 0, nrflags);
1348	break;
1349	#if 0
1350	case RTA_NETMASK:
1351	case RTA_GENMASK:
1352	bzero(su, sizeof(su)); / for readability */
1353	#endif
1354	}
1355	return (0);
1356	}
1357	switch (afamily) {
1358	#ifdef INET6
1359	case AF_INET6:
1360	{
1361	struct addrinfo hints, *res;
1362	int ecode;
1363
1364	q = NULL;
1365	if (which == RTA_DST && (q = strchr(str, '/')) != NULL)
1366	*q = '\0';
1367	memset(&hints, 0, sizeof(hints));
1368	hints.ai_family = afamily; /AF_INET6/
1369	hints.ai_socktype = SOCK_DGRAM; /dummy/
1370	ecode = getaddrinfo(str, NULL, &hints, &res);
1371	if (ecode != 0 \|\| res->ai_family != AF_INET6 \|\|
1372	res->ai_addrlen != sizeof(su->sin6)) {
1373	(void) fprintf(stderr, "%s: %s\n", str,
1374	gai_strerror(ecode));
1375	exit(1);
1376	}
1377	memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6));
1378	#ifdef __KAME__
1379	if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) \|\|
1380	IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr) \|\|
1381	IN6_IS_ADDR_MC_NODELOCAL(&su->sin6.sin6_addr)) &&
1382	su->sin6.sin6_scope_id) {
1383	(u_int16_t )&su->sin6.sin6_addr.s6_addr[2] =
1384	htons(su->sin6.sin6_scope_id);
1385	su->sin6.sin6_scope_id = 0;
1386	}
1387	#endif
1388	freeaddrinfo(res);
1389	if (q != NULL)
1390	*q++ = '/';
1391	if (which == RTA_DST)
1392	return (inet6_makenetandmask(c, &su->sin6, q));
1393	return (0);
1394	}
1395	#endif /* INET6 */
1396
1397	case AF_APPLETALK:
1398	if (!atalk_aton(str, &su->sat.sat_addr))
1399	errx(EX_NOHOST, "bad address: %s", str);
1400	c->rtm_addrs \|= RTA_NETMASK;
1401	return(c->forcehost \|\| su->sat.sat_addr.s_node != 0);
1402
1403	case AF_LINK:
1404	link_addr(str, &su->sdl);
1405	return (1);
1406
1407
1408	case PF_ROUTE:
1409	su->sa.sa_len = sizeof(*su);
1410	sockaddr(str, &su->sa);
1411	return (1);
1412
1413	case AF_INET:
1414	default:
1415	break;
1416	}
1417
1418	if (hpp == NULL)
1419	hpp = &hp;
1420	*hpp = NULL;
1421
1422	q = strchr(str,'/');
1423	if (q != NULL && which == RTA_DST) {
1424	*q = '\0';
1425	if ((val = inet_network(str)) != INADDR_NONE) {
1426	inet_makenetandmask(
1427	c, val, &su->sin, strtoul(q+1, 0, 0));
1428	return (0);
1429	}
1430	*q = '/';
1431	}
1432	if ((which != RTA_DST \|\| c->forcenet == 0) &&
1433	inet_aton(str, &su->sin.sin_addr)) {
1434	val = su->sin.sin_addr.s_addr;
1435	if (which != RTA_DST \|\| c->forcehost \|\|
1436	inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
1437	return (1);
1438	else {
1439	val = ntohl(val);
1440	goto netdone;
1441	}
1442	}
1443	if (which == RTA_DST && c->forcehost == 0 &&
1444	((val = inet_network(str)) != INADDR_NONE \|\|
1445	((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) {
1446	netdone:
1447	inet_makenetandmask(c, val, &su->sin, 0);
1448	return (0);
1449	}
1450	hp = gethostbyname(str);
1451	if (hp != NULL) {
1452	*hpp = hp;
1453	su->sin.sin_family = hp->h_addrtype;
1454	memmove((char *)&su->sin.sin_addr, hp->h_addr,
1455	MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr)));
1456	return (1);
1457	}
1458	errx(EX_NOHOST, "bad address: %s", str);
1459	}
1460
1461	static int
1462	prefixlen(struct rt_ctx c, const char str)
1463	{
1464	int len = atoi(str), q, r;
1465	int max;
1466	char *p;
1467
1468	c->rtm_addrs \|= RTA_NETMASK;
1469	switch (c->af) {
1470	#ifdef INET6
1471	case AF_INET6:
1472	max = 128;
1473	p = (char *)&c->so_mask.sin6.sin6_addr;
1474	break;
1475	#endif
1476	case AF_INET:
1477	max = 32;
1478	p = (char *)&c->so_mask.sin.sin_addr;
1479	break;
1480	default:
1481	fprintf(stderr, "prefixlen not supported in this af\n");
1482	exit(1);
1483	}
1484
1485	if (len < 0 \|\| max < len) {
1486	fprintf(stderr, "%s: bad value\n", str);
1487	exit(1);
1488	}
1489
1490	q = len >> 3;
1491	r = len & 7;
1492	c->so_mask.sa.sa_family = c->af;
1493	c->so_mask.sa.sa_len = c->aflen;
1494	memset((void *)p, 0, max / 8);
1495	if (q > 0)
1496	memset((void *)p, 0xff, q);
1497	if (r > 0)
1498	((u_char )p + q) = (0xff00 >> r) & 0xff;
1499	if (len == max)
1500	return (-1);
1501	else
1502	return (len);
1503	}
1504
1505	static void
1506	interfaces(struct rt_ctx *c)
1507	{
1508	size_t needed;
1509	int mib[6];
1510	char buf, lim, *next, count = 0;
1511	struct rt_msghdr *rtm;
1512
1513	retry2:
1514	mib[0] = CTL_NET;
1515	mib[1] = PF_ROUTE;
1516	mib[2] = 0; /* protocol */
1517	mib[3] = 0; /* wildcard address family */
1518	mib[4] = NET_RT_IFLIST;
1519	mib[5] = 0; /* no flags */
1520	if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
1521	err(EX_OSERR, "route-sysctl-estimate");
1522	if ((buf = malloc(needed)) == NULL && needed != 0)
1523	errx(EX_OSERR, "malloc failed");
1524	if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
1525	if (errno == ENOMEM && count++ < 10) {
1526	warnx("Routing table grew, retrying");
1527	sleep(1);
1528	free(buf);
1529	goto retry2;
1530	}
1531	err(EX_OSERR, "actual retrieval of interface table");
1532	}
1533	lim = buf + needed;
1534	for (next = buf; next < lim; next += rtm->rtm_msglen) {
1535	rtm = (struct rt_msghdr *)next;
1536	print_rtmsg(c, rtm, rtm->rtm_msglen);
1537	}
1538	free(buf);
1539	}
1540
1541	static void
1542	monitor(struct rt_ctx c, int argc, char argv[])
1543	{
1544	int n, fib, error;
1545	char msg[2048], *endptr;
1546
1547	fib = c->defaultfib;
1548	while (argc > 1) {
1549	argc--;
1550	argv++;
1551	if (**argv != '-')
1552	usage(*argv);
1553	switch (keyword(*argv + 1)) {
1554	case K_FIB:
1555	if (!--argc)
1556	usage(*argv);
1557	errno = 0;
1558	fib = strtol(*++argv, &endptr, 0);
1559	if (errno == 0) {
1560	if (*endptr != '\0' \|\|
1561	fib < 0 \|\|
1562	(c->numfibs != -1 && fib > c->numfibs - 1))
1563	errno = EINVAL;
1564	}
1565	if (errno)
1566	errx(EX_USAGE, "invalid fib number: %s", *argv);
1567	break;
1568	default:
1569	usage(*argv);
1570	}
1571	}
1572	error = set_sofib(c, fib);
1573	if (error)
1574	errx(EX_USAGE, "invalid fib number: %d", fib);
1575
1576	c->verbose = 1;
1577	if (c->debugonly) {
1578	interfaces(c);
1579	exit(0);
1580	}
1581	for (;;) {
1582	time_t now;
1583	n = read(c->s, msg, 2048);
1584	now = time(NULL);
1585	(void) printf("\ngot message of size %d on %s", n, ctime(&now));
1586	print_rtmsg(c, (struct rt_msghdr *)msg, n);
1587	}
1588	}
1589
1590	static int
1591	rtmsg(struct rt_ctx *c, int cmd, int flags, int fib)
1592	{
1593	int rlen;
1594	char *cp = c->m_rtmsg.m_space;
1595	int l;
1596
1597	#define NEXTADDR(w, u) \
1598	if (c->rtm_addrs & (w)) {\
1599	l = SA_SIZE(&(u.sa)); memmove(cp, &(u), l); cp += l;\
1600	if (c->verbose) sodump(&(u),#u);\
1601	}
1602
1603	errno = 0;
1604	memset(&c->m_rtmsg, 0, sizeof(c->m_rtmsg));
1605	if (cmd == 'a')
1606	cmd = RTM_ADD;
1607	else if (cmd == 'c')
1608	cmd = RTM_CHANGE;
1609	else if (cmd == 'g' \|\| cmd == 's') {
1610	cmd = RTM_GET;
1611	if (c->so_ifp.sa.sa_family == 0) {
1612	c->so_ifp.sa.sa_family = AF_LINK;
1613	c->so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
1614	c->rtm_addrs \|= RTA_IFP;
1615	}
1616	} else
1617	cmd = RTM_DELETE;
1618	#define rtm c->m_rtmsg.m_rtm
1619	rtm.rtm_type = cmd;
1620	rtm.rtm_flags = flags;
1621	rtm.rtm_version = RTM_VERSION;
1622	rtm.rtm_seq = ++c->rtm_seq;
1623	rtm.rtm_addrs = c->rtm_addrs;
1624	rtm.rtm_rmx = c->rt_metrics;
1625	rtm.rtm_inits = c->rtm_inits;
1626
1627	if (c->rtm_addrs & RTA_NETMASK)
1628	mask_addr(c);
1629	NEXTADDR(RTA_DST, c->so_dst);
1630	NEXTADDR(RTA_GATEWAY, c->so_gate);
1631	NEXTADDR(RTA_NETMASK, c->so_mask);
1632	NEXTADDR(RTA_GENMASK, c->so_genmask);
1633	NEXTADDR(RTA_IFP, c->so_ifp);
1634	NEXTADDR(RTA_IFA, c->so_ifa);
1635	rtm.rtm_msglen = l = cp - (char *)&c->m_rtmsg;
1636	if (c->verbose)
1637	print_rtmsg(c, &rtm, l);
1638	if (c->debugonly)
1639	return (0);
1640	if ((rlen = write(c->s, (char *)&c->m_rtmsg, l)) < 0) {
1641	if (errno == EPERM)
1642	err(1, "writing to routing socket");
1643	warn("writing to routing socket");
1644	return (-1);
1645	}
1646	if (cmd == RTM_GET) {
1647	do {
1648	l = read(c->s, (char *)&c->m_rtmsg, sizeof(c->m_rtmsg));
1649	} while (l > 0 && (rtm.rtm_seq != c->rtm_seq \|\| rtm.rtm_pid != c->pid));
1650	if (l < 0)
1651	warn("read from routing socket");
1652	else
1653	print_getmsg(c, &rtm, l, fib);
1654	}
1655	#undef rtm
1656	return (0);
1657	}
1658
1659	static void
1660	mask_addr(struct rt_ctx *c)
1661	{
1662	int olen = c->so_mask.sa.sa_len;
1663	char cp1 = olen + (char )&c->so_mask, *cp2;
1664
1665	for (c->so_mask.sa.sa_len = 0; cp1 > (char *)&c->so_mask; )
1666	if (*--cp1 != 0) {
1667	c->so_mask.sa.sa_len = 1 + cp1 - (char *)&c->so_mask;
1668	break;
1669	}
1670	if ((c->rtm_addrs & RTA_DST) == 0)
1671	return;
1672	switch (c->so_dst.sa.sa_family) {
1673	case AF_INET:
1674	#ifdef INET6
1675	case AF_INET6:
1676	#endif
1677	case AF_APPLETALK:
1678	case 0:
1679	return;
1680	}
1681	cp1 = c->so_mask.sa.sa_len + 1 + (char *)&c->so_dst;
1682	cp2 = c->so_dst.sa.sa_len + 1 + (char *)&c->so_dst;
1683	while (cp2 > cp1)
1684	*--cp2 = 0;
1685	cp2 = c->so_mask.sa.sa_len + 1 + (char *)&c->so_mask;
1686	while (cp1 > c->so_dst.sa.sa_data)
1687	--cp1 &= --cp2;
1688	}
1689
1690	static const char *const msgtypes[] = {
1691	"",
1692	"RTM_ADD: Add Route",
1693	"RTM_DELETE: Delete Route",
1694	"RTM_CHANGE: Change Metrics or flags",
1695	"RTM_GET: Report Metrics",
1696	"RTM_LOSING: Kernel Suspects Partitioning",
1697	"RTM_REDIRECT: Told to use different route",
1698	"RTM_MISS: Lookup failed on this address",
1699	"RTM_LOCK: fix specified metrics",
1700	"RTM_OLDADD: caused by SIOCADDRT",
1701	"RTM_OLDDEL: caused by SIOCDELRT",
1702	"RTM_RESOLVE: Route created by cloning",
1703	"RTM_NEWADDR: address being added to iface",
1704	"RTM_DELADDR: address being removed from iface",
1705	"RTM_IFINFO: iface status change",
1706	"RTM_NEWMADDR: new multicast group membership on iface",
1707	"RTM_DELMADDR: multicast group membership removed from iface",
1708	"RTM_IFANNOUNCE: interface arrival/departure",
1709	"RTM_IEEE80211: IEEE 802.11 wireless event",
1710	};
1711
1712	static const char metricnames[] =
1713	"\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire"
1714	"\1mtu";
1715	static const char routeflags[] =
1716	"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE"
1717	"\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE"
1718	"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3"
1719	"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY";
1720	static const char ifnetflags[] =
1721	"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP"
1722	"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1"
1723	"\017LINK2\020MULTICAST";
1724	static const char addrnames[] =
1725	"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
1726
1727	static const char errfmt[] =
1728	"\n%s: truncated route message, only %zu bytes left\n";
1729
1730	static void
1731	print_rtmsg(struct rt_ctx c, struct rt_msghdr rtm, size_t msglen)
1732	{
1733	struct if_msghdr *ifm;
1734	struct ifa_msghdr *ifam;
1735	#ifdef RTM_NEWMADDR
1736	struct ifma_msghdr *ifmam;
1737	#endif
1738	struct if_announcemsghdr *ifan;
1739	const char *state;
1740
1741	if (c->verbose == 0)
1742	return;
1743	if (rtm->rtm_version != RTM_VERSION) {
1744	(void) printf("routing message version %d not understood\n",
1745	rtm->rtm_version);
1746	return;
1747	}
1748	if (rtm->rtm_type < sizeof(msgtypes) / sizeof(msgtypes[0]))
1749	(void)printf("%s: ", msgtypes[rtm->rtm_type]);
1750	else
1751	(void)printf("unknown type %d: ", rtm->rtm_type);
1752	(void)printf("len %d, ", rtm->rtm_msglen);
1753
1754	#define REQUIRE(x) do { \
1755	if (msglen < sizeof(x)) \
1756	goto badlen; \
1757	else \
1758	msglen -= sizeof(x); \
1759	} while (0)
1760
1761	switch (rtm->rtm_type) {
1762	case RTM_IFINFO:
1763	REQUIRE(struct if_msghdr);
1764	ifm = (struct if_msghdr *)rtm;
1765	(void) printf("if# %d, ", ifm->ifm_index);
1766	switch (ifm->ifm_data.ifi_link_state) {
1767	case LINK_STATE_DOWN:
1768	state = "down";
1769	break;
1770	case LINK_STATE_UP:
1771	state = "up";
1772	break;
1773	default:
1774	state = "unknown";
1775	break;
1776	}
1777	(void) printf("link: %s, flags:", state);
1778	bprintf(stdout, ifm->ifm_flags, ifnetflags);
1779	pmsg_addrs(c, (char *)(ifm + 1), ifm->ifm_addrs, msglen);
1780	break;
1781	case RTM_NEWADDR:
1782	case RTM_DELADDR:
1783	REQUIRE(struct ifa_msghdr);
1784	ifam = (struct ifa_msghdr *)rtm;
1785	(void) printf("metric %d, flags:", ifam->ifam_metric);
1786	bprintf(stdout, ifam->ifam_flags, routeflags);
1787	pmsg_addrs(c, (char *)(ifam + 1), ifam->ifam_addrs, msglen);
1788	break;
1789	#ifdef RTM_NEWMADDR
1790	case RTM_NEWMADDR:
1791	case RTM_DELMADDR:
1792	REQUIRE(struct ifma_msghdr);
1793	ifmam = (struct ifma_msghdr *)rtm;
1794	pmsg_addrs(c, (char *)(ifmam + 1), ifmam->ifmam_addrs, msglen);
1795	break;
1796	#endif
1797	case RTM_IFANNOUNCE:
1798	REQUIRE(struct if_announcemsghdr);
1799	ifan = (struct if_announcemsghdr *)rtm;
1800	(void) printf("if# %d, what: ", ifan->ifan_index);
1801	switch (ifan->ifan_what) {
1802	case IFAN_ARRIVAL:
1803	printf("arrival");
1804	break;
1805	case IFAN_DEPARTURE:
1806	printf("departure");
1807	break;
1808	default:
1809	printf("#%d", ifan->ifan_what);
1810	break;
1811	}
1812	printf("\n");
1813	fflush(stdout);
1814	break;
1815
1816	default:
1817	(void) printf("pid: %ld, seq %d, errno %d, flags:",
1818	(long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
1819	bprintf(stdout, rtm->rtm_flags, routeflags);
1820	pmsg_common(c, rtm, msglen);
1821	}
1822
1823	return;
1824
1825	badlen:
1826	(void)printf(errfmt, __func__, msglen);
1827	#undef REQUIRE
1828	}
1829
1830	static void
1831	print_getmsg(struct rt_ctx c, struct rt_msghdr rtm, int msglen, int fib)
1832	{
1833	struct sockaddr dst = NULL, gate = NULL, *mask = NULL;
1834	struct sockaddr_dl *ifp = NULL;
1835	struct sockaddr *sa;
1836	char *cp;
1837	int i;
1838
1839	(void) printf(" route to: %s\n",
1840	routename(c, (struct sockaddr *)&c->so_dst));
1841	if (rtm->rtm_version != RTM_VERSION) {
1842	warnx("routing message version %d not understood",
1843	rtm->rtm_version);
1844	return;
1845	}
1846	if (rtm->rtm_msglen > msglen) {
1847	warnx("message length mismatch, in packet %d, returned %d",
1848	rtm->rtm_msglen, msglen);
1849	}
1850	if (rtm->rtm_errno) {
1851	errno = rtm->rtm_errno;
1852	warn("message indicates error %d", errno);
1853	return;
1854	}
1855	cp = ((char *)(rtm + 1));
1856	if (rtm->rtm_addrs)
1857	for (i = 1; i; i <<= 1)
1858	if (i & rtm->rtm_addrs) {
1859	sa = (struct sockaddr *)cp;
1860	switch (i) {
1861	case RTA_DST:
1862	dst = sa;
1863	break;
1864	case RTA_GATEWAY:
1865	gate = sa;
1866	break;
1867	case RTA_NETMASK:
1868	mask = sa;
1869	break;
1870	case RTA_IFP:
1871	if (sa->sa_family == AF_LINK &&
1872	((struct sockaddr_dl *)sa)->sdl_nlen)
1873	ifp = (struct sockaddr_dl *)sa;
1874	break;
1875	}
1876	cp += SA_SIZE(sa);
1877	}
1878	if (dst && mask)
1879	mask->sa_family = dst->sa_family; /* XXX */
1880	if (dst)
1881	(void)printf("destination: %s\n", routename(c, dst));
1882	if (mask) {
1883	int savenflag = c->nflag;
1884
1885	c->nflag = 1;
1886	(void)printf(" mask: %s\n", routename(c, mask));
1887	c->nflag = savenflag;
1888	}
1889	if (gate && rtm->rtm_flags & RTF_GATEWAY)
1890	(void)printf(" gateway: %s\n", routename(c, gate));
1891	if (fib >= 0)
1892	(void)printf(" fib: %u\n", (unsigned int)fib);
1893	if (ifp)
1894	(void)printf(" interface: %.*s\n",
1895	ifp->sdl_nlen, ifp->sdl_data);
1896	(void)printf(" flags: ");
1897	bprintf(stdout, rtm->rtm_flags, routeflags);
1898
1899	#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
1900	#define msec(u) (((u) + 500) / 1000) /* usec to msec */
1901
1902	(void) printf("\n%s\n", "\
1903	recvpipe sendpipe ssthresh rtt,msec mtu weight expire");
1904	printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
1905	printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
1906	printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
1907	printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
1908	printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
1909	printf("%8ld%c ", rtm->rtm_rmx.rmx_weight, lock(WEIGHT));
1910	if (rtm->rtm_rmx.rmx_expire)
1911	rtm->rtm_rmx.rmx_expire -= time(0);
1912	printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
1913	#undef lock
1914	#undef msec
1915	#define RTA_IGN (RTA_DST\|RTA_GATEWAY\|RTA_NETMASK\|RTA_IFP\|RTA_IFA\|RTA_BRD)
1916	if (c->verbose)
1917	pmsg_common(c, rtm, msglen);
1918	else if (rtm->rtm_addrs &~ RTA_IGN) {
1919	(void) printf("sockaddrs: ");
1920	bprintf(stdout, rtm->rtm_addrs, addrnames);
1921	putchar('\n');
1922	}
1923	#undef RTA_IGN
1924	}
1925
1926	static void
1927	pmsg_common(struct rt_ctx c, struct rt_msghdr rtm, size_t msglen)
1928	{
1929	(void) printf("\nlocks: ");
1930	bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
1931	(void) printf(" inits: ");
1932	bprintf(stdout, rtm->rtm_inits, metricnames);
1933	if (msglen > sizeof(struct rt_msghdr))
1934	pmsg_addrs(c, ((char *)(rtm + 1)), rtm->rtm_addrs,
1935	msglen - sizeof(struct rt_msghdr));
1936	else
1937	(void) fflush(stdout);
1938	}
1939
1940	static void
1941	pmsg_addrs(struct rt_ctx c, char cp, int addrs, size_t len)
1942	{
1943	struct sockaddr *sa;
1944	int i;
1945
1946	if (addrs == 0) {
1947	(void) putchar('\n');
1948	return;
1949	}
1950	(void) printf("\nsockaddrs: ");
1951	bprintf(stdout, addrs, addrnames);
1952	(void) putchar('\n');
1953	for (i = 1; i != 0; i <<= 1)
1954	if (i & addrs) {
1955	sa = (struct sockaddr *)cp;
1956	if (len == 0 \|\| len < SA_SIZE(sa)) {
1957	(void) printf(errfmt, __func__, len);
1958	break;
1959	}
1960	(void) printf(" %s", routename(c, sa));
1961	len -= SA_SIZE(sa);
1962	cp += SA_SIZE(sa);
1963	}
1964	(void) putchar('\n');
1965	(void) fflush(stdout);
1966	}
1967
1968	static void
1969	bprintf(FILE fp, int b, const char sstr)
1970	{
1971	const u_char str = (const u_char ) sstr;
1972	int i;
1973	int gotsome = 0;
1974
1975	if (b == 0)
1976	return;
1977	while ((i = *str++) != 0) {
1978	if (b & (1 << (i-1))) {
1979	if (gotsome == 0)
1980	i = '<';
1981	else
1982	i = ',';
1983	(void) putc(i, fp);
1984	gotsome = 1;
1985	for (; (i = *str) > 32; str++)
1986	(void) putc(i, fp);
1987	} else
1988	while (*str > 32)
1989	str++;
1990	}
1991	if (gotsome)
1992	(void) putc('>', fp);
1993	}
1994
1995	int
1996	keyword(const char *cp)
1997	{
1998	const struct keytab *kt = keywords;
1999
2000	while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0)
2001	kt++;
2002	return (kt->kt_i);
2003	}
2004
2005	static void
2006	sodump(sup su, const char *which)
2007	{
2008	char atalk_buf[20];
2009
2010	switch (su->sa.sa_family) {
2011	case AF_LINK:
2012	(void) printf("%s: link %s; ",
2013	which, link_ntoa(&su->sdl));
2014	break;
2015	case AF_INET:
2016	(void) printf("%s: inet %s; ",
2017	which, inet_ntoa(su->sin.sin_addr));
2018	break;
2019	case AF_APPLETALK:
2020	(void) printf("%s: atalk %s; ",
2021	which, atalk_ntoa(su->sat.sat_addr, atalk_buf));
2022	break;
2023	}
2024	(void) fflush(stdout);
2025	}
2026
2027	/* States*/
2028	#define VIRGIN 0
2029	#define GOTONE 1
2030	#define GOTTWO 2
2031	/* Inputs */
2032	#define DIGIT (4*0)
2033	#define END (4*1)
2034	#define DELIM (4*2)
2035
2036	static void
2037	sockaddr(char addr, struct sockaddr sa)
2038	{
2039	char cp = (char )sa;
2040	int size = sa->sa_len;
2041	char *cplim = cp + size;
2042	int byte = 0, state = VIRGIN, new = 0 /* foil gcc */;
2043
2044	memset(cp, 0, size);
2045	cp++;
2046	do {
2047	if ((addr >= '0') && (addr <= '9')) {
2048	new = *addr - '0';
2049	} else if ((addr >= 'a') && (addr <= 'f')) {
2050	new = *addr - 'a' + 10;
2051	} else if ((addr >= 'A') && (addr <= 'F')) {
2052	new = *addr - 'A' + 10;
2053	} else if (*addr == '\0')
2054	state \|= END;
2055	else
2056	state \|= DELIM;
2057	addr++;
2058	switch (state /* \| INPUT */) {
2059	case GOTTWO \| DIGIT:
2060	cp++ = byte; /FALLTHROUGH*/
2061	case VIRGIN \| DIGIT:
2062	state = GOTONE; byte = new; continue;
2063	case GOTONE \| DIGIT:
2064	state = GOTTWO; byte = new + (byte << 4); continue;
2065	default: /* \| DELIM */
2066	state = VIRGIN; *cp++ = byte; byte = 0; continue;
2067	case GOTONE \| END:
2068	case GOTTWO \| END:
2069	cp++ = byte; / FALLTHROUGH */
2070	case VIRGIN \| END:
2071	break;
2072	}
2073	break;
2074	} while (cp < cplim);
2075	sa->sa_len = cp - (char *)sa;
2076	}
2077
2078	static int
2079	atalk_aton(const char text, struct at_addr addr)
2080	{
2081	u_int net, node;
2082
2083	if (sscanf(text, "%u.%u", &net, &node) != 2
2084	\|\| net > 0xffff \|\| node > 0xff)
2085	return(0);
2086	addr->s_net = htons(net);
2087	addr->s_node = node;
2088	return(1);
2089	}
2090
2091	static char *
2092	atalk_ntoa(struct at_addr at, char buf[20])
2093	{
2094	(void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);
2095	return(buf);
2096	}

Note: See TracBrowser for help on using the repository browser.

Download in other formats: