ndp.c revision 121471 
1/*	$FreeBSD: head/usr.sbin/ndp/ndp.c 121471 2003-10-24 18:00:17Z ume $	*/
2/*	$KAME: ndp.c,v 1.65 2001/05/08 04:36:34 itojun Exp $	*/
3
4/*
5 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32/*
33 * Copyright (c) 1984, 1993
34 *	The Regents of the University of California.  All rights reserved.
35 *
36 * This code is derived from software contributed to Berkeley by
37 * Sun Microsystems, Inc.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 * 1. Redistributions of source code must retain the above copyright
43 *    notice, this list of conditions and the following disclaimer.
44 * 2. Redistributions in binary form must reproduce the above copyright
45 *    notice, this list of conditions and the following disclaimer in the
46 *    documentation and/or other materials provided with the distribution.
47 * 3. All advertising materials mentioning features or use of this software
48 *    must display the following acknowledgement:
49 *	This product includes software developed by the University of
50 *	California, Berkeley and its contributors.
51 * 4. Neither the name of the University nor the names of its contributors
52 *    may be used to endorse or promote products derived from this software
53 *    without specific prior written permission.
54 *
55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
58 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65 * SUCH DAMAGE.
66 */
67
68/*
69 * Based on:
70 * "@(#) Copyright (c) 1984, 1993\n\
71 *	The Regents of the University of California.  All rights reserved.\n";
72 *
73 * "@(#)arp.c	8.2 (Berkeley) 1/2/94";
74 */
75
76/*
77 * ndp - display, set, delete and flush neighbor cache
78 */
79
80
81#include <sys/param.h>
82#include <sys/file.h>
83#include <sys/ioctl.h>
84#include <sys/socket.h>
85#include <sys/sysctl.h>
86#include <sys/time.h>
87#include <sys/queue.h>
88
89#include <net/if.h>
90#include <net/if_var.h>
91#include <net/if_dl.h>
92#include <net/if_types.h>
93#include <net/route.h>
94
95#include <netinet/in.h>
96#include <netinet/if_ether.h>
97
98#include <netinet/icmp6.h>
99#include <netinet6/in6_var.h>
100#include <netinet6/nd6.h>
101
102#include <arpa/inet.h>
103
104#include <netdb.h>
105#include <errno.h>
106#include <nlist.h>
107#include <stdio.h>
108#include <string.h>
109#include <paths.h>
110#include <err.h>
111#include <stdlib.h>
112#include <fcntl.h>
113#include <unistd.h>
114#include "gmt2local.h"
115
116/* packing rule for routing socket */
117#define ROUNDUP(a) \
118	((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
119#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
120
121static pid_t pid;
122static int cflag;
123static int nflag;
124static int tflag;
125static int32_t thiszone;	/* time difference with gmt */
126static int s = -1;
127static int repeat = 0;
128
129char ntop_buf[INET6_ADDRSTRLEN];	/* inet_ntop() */
130char host_buf[NI_MAXHOST];		/* getnameinfo() */
131char ifix_buf[IFNAMSIZ];		/* if_indextoname() */
132
133int main __P((int, char **));
134int file __P((char *));
135void getsocket __P((void));
136int set __P((int, char **));
137void get __P((char *));
138int delete __P((char *));
139void dump __P((struct in6_addr *));
140static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *addr,
141					   int ifindex, int));
142static char *ether_str __P((struct sockaddr_dl *));
143int ndp_ether_aton __P((char *, u_char *));
144void usage __P((void));
145int rtmsg __P((int));
146void ifinfo __P((int, char **));
147void rtrlist __P((void));
148void plist __P((void));
149void pfx_flush __P((void));
150void rtrlist __P((void));
151void rtr_flush __P((void));
152void harmonize_rtr __P((void));
153#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
154static void getdefif __P((void));
155static void setdefif __P((char *));
156#endif
157static char *sec2str __P((time_t t));
158static char *ether_str __P((struct sockaddr_dl *sdl));
159static void ts_print __P((const struct timeval *));
160
161static char *rtpref_str[] = {
162	"medium",		/* 00 */
163	"high",			/* 01 */
164	"rsv",			/* 10 */
165	"low"			/* 11 */
166};
167
168int
169main(argc, argv)
170	int argc;
171	char **argv;
172{
173	int ch;
174	int aflag = 0, dflag = 0, sflag = 0, Hflag = 0,
175		pflag = 0, rflag = 0, Pflag = 0, Rflag = 0;
176
177	pid = getpid();
178	thiszone = gmt2local(0);
179	while ((ch = getopt(argc, argv, "acndfIilprstA:HPR")) != -1)
180		switch (ch) {
181		case 'a':
182			aflag = 1;
183			break;
184		case 'c':
185			cflag = 1;
186			break;
187		case 'd':
188			dflag = 1;
189			break;
190		case 'I':
191#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
192			if (argc > 2)
193				setdefif(argv[2]);
194			getdefif(); /* always call it to print the result */
195			exit(0);
196#else
197			errx(1, "not supported yet");
198			/*NOTREACHED*/
199#endif
200		case 'i' :
201			argc -= optind;
202			argv += optind;
203			if (argc < 1)
204				usage();
205			ifinfo(argc, argv);
206			exit(0);
207		case 'n':
208			nflag = 1;
209			continue;
210		case 'p':
211			pflag = 1;
212			break;
213		case 'f' :
214			if (argc != 3)
215				usage();
216			file(argv[2]);
217			exit(0);
218		case 'l' :
219			/* obsolete, ignored */
220			break;
221		case 'r' :
222			rflag = 1;
223			break;
224		case 's':
225			sflag = 1;
226			break;
227		case 't':
228			tflag = 1;
229			break;
230		case 'A':
231			aflag = 1;
232			repeat = atoi(optarg);
233			if (repeat < 0)
234				usage();
235			break;
236		case 'H' :
237			Hflag = 1;
238			break;
239		case 'P':
240			Pflag = 1;
241			break;
242		case 'R':
243			Rflag = 1;
244			break;
245		default:
246			usage();
247		}
248
249	argc -= optind;
250	argv += optind;
251
252	if (aflag || cflag) {
253		dump(0);
254		exit(0);
255	}
256	if (dflag) {
257		if (argc != 1)
258			usage();
259		delete(argv[0]);
260		exit(0);
261	}
262	if (pflag) {
263		plist();
264		exit(0);
265	}
266	if (rflag) {
267		rtrlist();
268		exit(0);
269	}
270	if (sflag) {
271		if (argc < 2 || argc > 4)
272			usage();
273		exit(set(argc, argv) ? 1 : 0);
274	}
275	if (Hflag) {
276		harmonize_rtr();
277		exit(0);
278	}
279	if (Pflag) {
280		pfx_flush();
281		exit(0);
282	}
283	if (Rflag) {
284		rtr_flush();
285		exit(0);
286	}
287
288	if (argc != 1)
289		usage();
290	get(argv[0]);
291	exit(0);
292}
293
294/*
295 * Process a file to set standard ndp entries
296 */
297int
298file(name)
299	char *name;
300{
301	FILE *fp;
302	int i, retval;
303	char line[100], arg[5][50], *args[5];
304
305	if ((fp = fopen(name, "r")) == NULL) {
306		fprintf(stderr, "ndp: cannot open %s\n", name);
307		exit(1);
308	}
309	args[0] = &arg[0][0];
310	args[1] = &arg[1][0];
311	args[2] = &arg[2][0];
312	args[3] = &arg[3][0];
313	args[4] = &arg[4][0];
314	retval = 0;
315	while (fgets(line, 100, fp) != NULL) {
316		i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2],
317		    arg[3], arg[4]);
318		if (i < 2) {
319			fprintf(stderr, "ndp: bad line: %s\n", line);
320			retval = 1;
321			continue;
322		}
323		if (set(i, args))
324			retval = 1;
325	}
326	fclose(fp);
327	return (retval);
328}
329
330void
331getsocket()
332{
333	if (s < 0) {
334		s = socket(PF_ROUTE, SOCK_RAW, 0);
335		if (s < 0) {
336			err(1, "socket");
337			/* NOTREACHED */
338		}
339	}
340}
341
342struct	sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 };
343struct	sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m;
344struct	sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m;
345int	expire_time, flags, found_entry;
346struct	{
347	struct	rt_msghdr m_rtm;
348	char	m_space[512];
349}	m_rtmsg;
350
351/*
352 * Set an individual neighbor cache entry
353 */
354int
355set(argc, argv)
356	int argc;
357	char **argv;
358{
359	register struct sockaddr_in6 *sin = &sin_m;
360	register struct sockaddr_dl *sdl;
361	register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
362	struct addrinfo hints, *res;
363	int gai_error;
364	u_char *ea;
365	char *host = argv[0], *eaddr = argv[1];
366
367	getsocket();
368	argc -= 2;
369	argv += 2;
370	sdl_m = blank_sdl;
371	sin_m = blank_sin;
372
373	bzero(&hints, sizeof(hints));
374	hints.ai_family = AF_INET6;
375	gai_error = getaddrinfo(host, NULL, &hints, &res);
376	if (gai_error) {
377		fprintf(stderr, "ndp: %s: %s\n", host,
378			gai_strerror(gai_error));
379		return 1;
380	}
381	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
382#ifdef __KAME__
383	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
384		*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
385		    htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
386	}
387#endif
388	ea = (u_char *)LLADDR(&sdl_m);
389	if (ndp_ether_aton(eaddr, ea) == 0)
390		sdl_m.sdl_alen = 6;
391	flags = expire_time = 0;
392	while (argc-- > 0) {
393		if (strncmp(argv[0], "temp", 4) == 0) {
394			struct timeval time;
395
396			gettimeofday(&time, 0);
397			expire_time = time.tv_sec + 20 * 60;
398		} else if (strncmp(argv[0], "proxy", 5) == 0)
399			flags |= RTF_ANNOUNCE;
400		argv++;
401	}
402	if (rtmsg(RTM_GET) < 0) {
403		errx(1, "RTM_GET(%s) failed", host);
404		/* NOTREACHED */
405	}
406	sin = (struct sockaddr_in6 *)(rtm + 1);
407	sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
408	if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
409		if (sdl->sdl_family == AF_LINK &&
410		    (rtm->rtm_flags & RTF_LLINFO) &&
411		    !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) {
412		case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
413		case IFT_ISO88024: case IFT_ISO88025:
414			goto overwrite;
415		}
416		/*
417		 * IPv4 arp command retries with sin_other = SIN_PROXY here.
418		 */
419		fprintf(stderr, "set: cannot configure a new entry\n");
420		return 1;
421	}
422
423overwrite:
424	if (sdl->sdl_family != AF_LINK) {
425		printf("cannot intuit interface index and type for %s\n", host);
426		return (1);
427	}
428	sdl_m.sdl_type = sdl->sdl_type;
429	sdl_m.sdl_index = sdl->sdl_index;
430	return (rtmsg(RTM_ADD));
431}
432
433/*
434 * Display an individual neighbor cache entry
435 */
436void
437get(host)
438	char *host;
439{
440	struct sockaddr_in6 *sin = &sin_m;
441	struct addrinfo hints, *res;
442	int gai_error;
443
444	sin_m = blank_sin;
445	bzero(&hints, sizeof(hints));
446	hints.ai_family = AF_INET6;
447	gai_error = getaddrinfo(host, NULL, &hints, &res);
448	if (gai_error) {
449		fprintf(stderr, "ndp: %s: %s\n", host,
450		    gai_strerror(gai_error));
451		return;
452	}
453	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
454#ifdef __KAME__
455	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
456		*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
457		    htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
458	}
459#endif
460	dump(&sin->sin6_addr);
461	if (found_entry == 0) {
462		getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
463		    sizeof(host_buf), NULL ,0,
464		    (nflag ? NI_NUMERICHOST : 0));
465		printf("%s (%s) -- no entry\n", host, host_buf);
466		exit(1);
467	}
468}
469
470/*
471 * Delete a neighbor cache entry
472 */
473int
474delete(host)
475	char *host;
476{
477	struct sockaddr_in6 *sin = &sin_m;
478	register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
479	struct sockaddr_dl *sdl;
480	struct addrinfo hints, *res;
481	int gai_error;
482
483	getsocket();
484	sin_m = blank_sin;
485
486	bzero(&hints, sizeof(hints));
487	hints.ai_family = AF_INET6;
488	gai_error = getaddrinfo(host, NULL, &hints, &res);
489	if (gai_error) {
490		fprintf(stderr, "ndp: %s: %s\n", host,
491		    gai_strerror(gai_error));
492		return 1;
493	}
494	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
495#ifdef __KAME__
496	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
497		*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
498		    htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
499	}
500#endif
501	if (rtmsg(RTM_GET) < 0) {
502		errx(1, "RTM_GET(%s) failed", host);
503		/* NOTREACHED */
504	}
505	sin = (struct sockaddr_in6 *)(rtm + 1);
506	sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
507	if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
508		if (sdl->sdl_family == AF_LINK &&
509		    (rtm->rtm_flags & RTF_LLINFO) &&
510		    !(rtm->rtm_flags & RTF_GATEWAY)) {
511			goto delete;
512		}
513		/*
514		 * IPv4 arp command retries with sin_other = SIN_PROXY here.
515		 */
516		fprintf(stderr, "delete: cannot delete non-NDP entry\n");
517		return 1;
518	}
519
520delete:
521	if (sdl->sdl_family != AF_LINK) {
522		printf("cannot locate %s\n", host);
523		return (1);
524	}
525	if (rtmsg(RTM_DELETE) == 0) {
526		struct sockaddr_in6 s6 = *sin; /* XXX: for safety */
527
528#ifdef __KAME__
529		if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) {
530			s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]);
531			*(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0;
532		}
533#endif
534		getnameinfo((struct sockaddr *)&s6,
535		    s6.sin6_len, host_buf,
536		    sizeof(host_buf), NULL, 0,
537		    (nflag ? NI_NUMERICHOST : 0));
538		printf("%s (%s) deleted\n", host, host_buf);
539	}
540
541	return 0;
542}
543
544#define W_ADDR	31
545#define W_LL	17
546#define W_IF	6
547
548/*
549 * Dump the entire neighbor cache
550 */
551void
552dump(addr)
553	struct in6_addr *addr;
554{
555	int mib[6];
556	size_t needed;
557	char *lim, *buf, *next;
558	struct rt_msghdr *rtm;
559	struct sockaddr_in6 *sin;
560	struct sockaddr_dl *sdl;
561	extern int h_errno;
562	struct in6_nbrinfo *nbi;
563	struct timeval time;
564	int addrwidth;
565	int llwidth;
566	int ifwidth;
567	char flgbuf[8];
568	char *ifname;
569
570	/* Print header */
571	if (!tflag && !cflag)
572		printf("%-*.*s %-*.*s %*.*s %-9.9s %2s %4s %4s\n",
573		    W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address",
574		    W_IF, W_IF, "Netif", "Expire", "St", "Flgs", "Prbs");
575
576again:;
577	mib[0] = CTL_NET;
578	mib[1] = PF_ROUTE;
579	mib[2] = 0;
580	mib[3] = AF_INET6;
581	mib[4] = NET_RT_FLAGS;
582	mib[5] = RTF_LLINFO;
583	if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
584		err(1, "sysctl(PF_ROUTE estimate)");
585	if (needed > 0) {
586		if ((buf = malloc(needed)) == NULL)
587			err(1, "malloc");
588		if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
589			err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)");
590		lim = buf + needed;
591	} else
592		buf = lim = NULL;
593
594	for (next = buf; next && next < lim; next += rtm->rtm_msglen) {
595		int isrouter = 0, prbs = 0;
596
597		rtm = (struct rt_msghdr *)next;
598		sin = (struct sockaddr_in6 *)(rtm + 1);
599		sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len));
600
601		/*
602		 * Some OSes can produce a route that has the LINK flag but
603		 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD
604		 * and BSD/OS, where xx is not the interface identifier on
605		 * lo0).  Such routes entry would annoy getnbrinfo() below,
606		 * so we skip them.
607		 * XXX: such routes should have the GATEWAY flag, not the
608		 * LINK flag.  However, there is rotten routing software
609		 * that advertises all routes that have the GATEWAY flag.
610		 * Thus, KAME kernel intentionally does not set the LINK flag.
611		 * What is to be fixed is not ndp, but such routing software
612		 * (and the kernel workaround)...
613		 */
614		if (sdl->sdl_family != AF_LINK)
615			continue;
616
617		if (addr) {
618			if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr))
619				continue;
620			found_entry = 1;
621		} else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr))
622			continue;
623		if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) ||
624		    IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) {
625			/* XXX: should scope id be filled in the kernel? */
626			if (sin->sin6_scope_id == 0)
627				sin->sin6_scope_id = sdl->sdl_index;
628#ifdef __KAME__
629			/* KAME specific hack; removed the embedded id */
630			*(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0;
631#endif
632		}
633		getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
634		    sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0));
635		if (cflag == 1) {
636#ifdef RTF_WASCLONED
637			if (rtm->rtm_flags & RTF_WASCLONED)
638				delete(host_buf);
639#else
640			delete(host_buf);
641#endif
642			continue;
643		}
644		gettimeofday(&time, 0);
645		if (tflag)
646			ts_print(&time);
647
648		addrwidth = strlen(host_buf);
649		if (addrwidth < W_ADDR)
650			addrwidth = W_ADDR;
651		llwidth = strlen(ether_str(sdl));
652		if (W_ADDR + W_LL - addrwidth > llwidth)
653			llwidth = W_ADDR + W_LL - addrwidth;
654		ifname = if_indextoname(sdl->sdl_index, ifix_buf);
655		if (!ifname)
656			ifname = "?";
657		ifwidth = strlen(ifname);
658		if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth)
659			ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth;
660
661		printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf,
662		    llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname);
663
664		/* Print neighbor discovery specific informations */
665		nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1);
666		if (nbi) {
667			if (nbi->expire > time.tv_sec) {
668				printf(" %-9.9s",
669				    sec2str(nbi->expire - time.tv_sec));
670			} else if (nbi->expire == 0)
671				printf(" %-9.9s", "permanent");
672			else
673				printf(" %-9.9s", "expired");
674
675			switch (nbi->state) {
676			case ND6_LLINFO_NOSTATE:
677				 printf(" N");
678				 break;
679#ifdef ND6_LLINFO_WAITDELETE
680			case ND6_LLINFO_WAITDELETE:
681				 printf(" W");
682				 break;
683#endif
684			case ND6_LLINFO_INCOMPLETE:
685				 printf(" I");
686				 break;
687			case ND6_LLINFO_REACHABLE:
688				 printf(" R");
689				 break;
690			case ND6_LLINFO_STALE:
691				 printf(" S");
692				 break;
693			case ND6_LLINFO_DELAY:
694				 printf(" D");
695				 break;
696			case ND6_LLINFO_PROBE:
697				 printf(" P");
698				 break;
699			default:
700				 printf(" ?");
701				 break;
702			}
703
704			isrouter = nbi->isrouter;
705			prbs = nbi->asked;
706		} else {
707			warnx("failed to get neighbor information");
708			printf("  ");
709		}
710		putchar(' ');
711
712		/*
713		 * other flags. R: router, P: proxy, W: ??
714		 */
715		if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
716			snprintf(flgbuf, sizeof(flgbuf), "%s%s",
717			    isrouter ? "R" : "",
718			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
719		} else {
720			sin = (struct sockaddr_in6 *)
721			    (sdl->sdl_len + (char *)sdl);
722			snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s",
723			    isrouter ? "R" : "",
724			    !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "",
725			    (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "",
726			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
727		}
728		printf(" %-4.4s", flgbuf);
729
730		if (prbs)
731			printf(" %4d", prbs);
732
733		printf("\n");
734	}
735	if (buf != NULL)
736		free(buf);
737
738	if (repeat) {
739		printf("\n");
740		sleep(repeat);
741		goto again;
742	}
743}
744
745static struct in6_nbrinfo *
746getnbrinfo(addr, ifindex, warning)
747	struct in6_addr *addr;
748	int ifindex;
749	int warning;
750{
751	static struct in6_nbrinfo nbi;
752	int s;
753
754	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
755		err(1, "socket");
756
757	bzero(&nbi, sizeof(nbi));
758	if_indextoname(ifindex, nbi.ifname);
759	nbi.addr = *addr;
760	if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) {
761		if (warning)
762			warn("ioctl(SIOCGNBRINFO_IN6)");
763		close(s);
764		return(NULL);
765	}
766
767	close(s);
768	return(&nbi);
769}
770
771static char *
772ether_str(sdl)
773	struct sockaddr_dl *sdl;
774{
775	static char hbuf[NI_MAXHOST];
776	u_char *cp;
777
778	if (sdl->sdl_alen) {
779		cp = (u_char *)LLADDR(sdl);
780		snprintf(hbuf, sizeof(hbuf), "%x:%x:%x:%x:%x:%x",
781		    cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]);
782	} else
783		snprintf(hbuf, sizeof(hbuf), "(incomplete)");
784
785	return(hbuf);
786}
787
788int
789ndp_ether_aton(a, n)
790	char *a;
791	u_char *n;
792{
793	int i, o[6];
794
795	i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2],
796	    &o[3], &o[4], &o[5]);
797	if (i != 6) {
798		fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a);
799		return (1);
800	}
801	for (i = 0; i < 6; i++)
802		n[i] = o[i];
803	return (0);
804}
805
806void
807usage()
808{
809	printf("usage: ndp hostname\n");
810	printf("       ndp -a[nt]\n");
811	printf("       ndp [-nt] -A wait\n");
812	printf("       ndp -c[nt]\n");
813	printf("       ndp -d[nt] hostname\n");
814	printf("       ndp -f[nt] filename\n");
815	printf("       ndp -i interface [flags...]\n");
816#ifdef SIOCSDEFIFACE_IN6
817	printf("       ndp -I [interface|delete]\n");
818#endif
819	printf("       ndp -p\n");
820	printf("       ndp -r\n");
821	printf("       ndp -s hostname ether_addr [temp] [proxy]\n");
822	printf("       ndp -H\n");
823	printf("       ndp -P\n");
824	printf("       ndp -R\n");
825	exit(1);
826}
827
828int
829rtmsg(cmd)
830	int cmd;
831{
832	static int seq;
833	int rlen;
834	register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
835	register char *cp = m_rtmsg.m_space;
836	register int l;
837
838	errno = 0;
839	if (cmd == RTM_DELETE)
840		goto doit;
841	bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
842	rtm->rtm_flags = flags;
843	rtm->rtm_version = RTM_VERSION;
844
845	switch (cmd) {
846	default:
847		fprintf(stderr, "ndp: internal wrong cmd\n");
848		exit(1);
849	case RTM_ADD:
850		rtm->rtm_addrs |= RTA_GATEWAY;
851		rtm->rtm_rmx.rmx_expire = expire_time;
852		rtm->rtm_inits = RTV_EXPIRE;
853		rtm->rtm_flags |= (RTF_HOST | RTF_STATIC);
854		if (rtm->rtm_flags & RTF_ANNOUNCE) {
855			rtm->rtm_flags &= ~RTF_HOST;
856			rtm->rtm_flags |= RTA_NETMASK;
857		}
858		/* FALLTHROUGH */
859	case RTM_GET:
860		rtm->rtm_addrs |= RTA_DST;
861	}
862#define NEXTADDR(w, s) \
863	if (rtm->rtm_addrs & (w)) { \
864		bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);}
865
866	NEXTADDR(RTA_DST, sin_m);
867	NEXTADDR(RTA_GATEWAY, sdl_m);
868	memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr));
869	NEXTADDR(RTA_NETMASK, so_mask);
870
871	rtm->rtm_msglen = cp - (char *)&m_rtmsg;
872doit:
873	l = rtm->rtm_msglen;
874	rtm->rtm_seq = ++seq;
875	rtm->rtm_type = cmd;
876	if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
877		if (errno != ESRCH || cmd != RTM_DELETE) {
878			err(1, "writing to routing socket");
879			/* NOTREACHED */
880		}
881	}
882	do {
883		l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
884	} while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
885	if (l < 0)
886		(void) fprintf(stderr, "ndp: read from routing socket: %s\n",
887		    strerror(errno));
888	return (0);
889}
890
891void
892ifinfo(argc, argv)
893	int argc;
894	char **argv;
895{
896	struct in6_ndireq nd;
897	int i, s;
898	char *ifname = argv[0];
899	u_int32_t newflags;
900#ifdef IPV6CTL_USETEMPADDR
901	u_int8_t nullbuf[8];
902#endif
903
904	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
905		err(1, "socket");
906		/* NOTREACHED */
907	}
908	bzero(&nd, sizeof(nd));
909	strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
910	if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
911		err(1, "ioctl(SIOCGIFINFO_IN6)");
912		/* NOTREACHED */
913 	}
914#define ND nd.ndi
915	newflags = ND.flags;
916	for (i = 1; i < argc; i++) {
917		int clear = 0;
918		char *cp = argv[i];
919
920		if (*cp == '-') {
921			clear = 1;
922			cp++;
923		}
924
925#define SETFLAG(s, f) \
926	do {\
927		if (strcmp(cp, (s)) == 0) {\
928			if (clear)\
929				newflags &= ~(f);\
930			else\
931				newflags |= (f);\
932		}\
933	} while (0)
934		SETFLAG("nud", ND6_IFF_PERFORMNUD);
935#ifdef ND6_IFF_ACCEPT_RTADV
936		SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV);
937#endif
938
939		ND.flags = newflags;
940		if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) {
941			err(1, "ioctl(SIOCSIFINFO_FLAGS)");
942			/* NOTREACHED */
943		}
944#undef SETFLAG
945	}
946
947	if (!ND.initialized) {
948		errx(1, "%s: not initialized yet", ifname);
949		/* NOTREACHED */
950	}
951
952	printf("linkmtu=%d", ND.linkmtu);
953	printf(", maxmtu=%d", ND.maxmtu);
954	printf(", curhlim=%d", ND.chlim);
955	printf(", basereachable=%ds%dms",
956	    ND.basereachable / 1000, ND.basereachable % 1000);
957	printf(", reachable=%ds", ND.reachable);
958	printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
959#ifdef IPV6CTL_USETEMPADDR
960	memset(nullbuf, 0, sizeof(nullbuf));
961	if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) {
962		int j;
963		u_int8_t *rbuf;
964
965		for (i = 0; i < 3; i++) {
966			switch (i) {
967			case 0:
968				printf("\nRandom seed(0): ");
969				rbuf = ND.randomseed0;
970				break;
971			case 1:
972				printf("\nRandom seed(1): ");
973				rbuf = ND.randomseed1;
974				break;
975			case 2:
976				printf("\nRandom ID:      ");
977				rbuf = ND.randomid;
978				break;
979			}
980			for (j = 0; j < 8; j++)
981				printf("%02x", rbuf[j]);
982		}
983	}
984#endif
985	if (ND.flags) {
986		printf("\nFlags: ");
987		if ((ND.flags & ND6_IFF_PERFORMNUD))
988			printf("nud ");
989#ifdef ND6_IFF_ACCEPT_RTADV
990		if ((ND.flags & ND6_IFF_ACCEPT_RTADV))
991			printf("accept_rtadv ");
992#endif
993}
994	putc('\n', stdout);
995#undef ND
996
997	close(s);
998}
999
1000#ifndef ND_RA_FLAG_RTPREF_MASK	/* XXX: just for compilation on *BSD release */
1001#define ND_RA_FLAG_RTPREF_MASK	0x18 /* 00011000 */
1002#endif
1003
1004void
1005rtrlist()
1006{
1007#ifdef ICMPV6CTL_ND6_DRLIST
1008	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST };
1009	char *buf;
1010	struct in6_defrouter *p, *ep;
1011	size_t l;
1012	struct timeval time;
1013
1014	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1015		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1016		/*NOTREACHED*/
1017	}
1018	buf = malloc(l);
1019	if (!buf) {
1020		err(1, "malloc");
1021		/*NOTREACHED*/
1022	}
1023	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1024		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1025		/*NOTREACHED*/
1026	}
1027
1028	ep = (struct in6_defrouter *)(buf + l);
1029	for (p = (struct in6_defrouter *)buf; p < ep; p++) {
1030		int rtpref;
1031
1032		if (getnameinfo((struct sockaddr *)&p->rtaddr,
1033		    p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0,
1034		    (nflag ? NI_NUMERICHOST : 0)) != 0)
1035			strlcpy(host_buf, "?", sizeof(host_buf));
1036
1037		printf("%s if=%s", host_buf,
1038		    if_indextoname(p->if_index, ifix_buf));
1039		printf(", flags=%s%s",
1040		    p->flags & ND_RA_FLAG_MANAGED ? "M" : "",
1041		    p->flags & ND_RA_FLAG_OTHER   ? "O" : "");
1042		rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff;
1043		printf(", pref=%s", rtpref_str[rtpref]);
1044
1045		gettimeofday(&time, 0);
1046		if (p->expire == 0)
1047			printf(", expire=Never\n");
1048		else
1049			printf(", expire=%s\n",
1050			    sec2str(p->expire - time.tv_sec));
1051	}
1052	free(buf);
1053#else
1054	struct in6_drlist dr;
1055	int s, i;
1056	struct timeval time;
1057
1058	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1059		err(1, "socket");
1060		/* NOTREACHED */
1061	}
1062	bzero(&dr, sizeof(dr));
1063	strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */
1064	if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
1065		err(1, "ioctl(SIOCGDRLST_IN6)");
1066		/* NOTREACHED */
1067	}
1068#define DR dr.defrouter[i]
1069	for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) {
1070		struct sockaddr_in6 sin6;
1071
1072		bzero(&sin6, sizeof(sin6));
1073		sin6.sin6_family = AF_INET6;
1074		sin6.sin6_len = sizeof(sin6);
1075		sin6.sin6_addr = DR.rtaddr;
1076		getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf,
1077		    sizeof(host_buf), NULL, 0,
1078		    (nflag ? NI_NUMERICHOST : 0));
1079
1080		printf("%s if=%s", host_buf,
1081		    if_indextoname(DR.if_index, ifix_buf));
1082		printf(", flags=%s%s",
1083		    DR.flags & ND_RA_FLAG_MANAGED ? "M" : "",
1084		    DR.flags & ND_RA_FLAG_OTHER   ? "O" : "");
1085		gettimeofday(&time, 0);
1086		if (DR.expire == 0)
1087			printf(", expire=Never\n");
1088		else
1089			printf(", expire=%s\n",
1090			    sec2str(DR.expire - time.tv_sec));
1091	}
1092#undef DR
1093	close(s);
1094#endif
1095}
1096
1097void
1098plist()
1099{
1100#ifdef ICMPV6CTL_ND6_PRLIST
1101	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST };
1102	char *buf;
1103	struct in6_prefix *p, *ep, *n;
1104	struct sockaddr_in6 *advrtr;
1105	size_t l;
1106	struct timeval time;
1107	const int niflags = NI_NUMERICHOST;
1108	int ninflags = nflag ? NI_NUMERICHOST : 0;
1109	char namebuf[NI_MAXHOST];
1110
1111	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1112		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1113		/*NOTREACHED*/
1114	}
1115	buf = malloc(l);
1116	if (!buf) {
1117		err(1, "malloc");
1118		/*NOTREACHED*/
1119	}
1120	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1121		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1122		/*NOTREACHED*/
1123	}
1124
1125	ep = (struct in6_prefix *)(buf + l);
1126	for (p = (struct in6_prefix *)buf; p < ep; p = n) {
1127		advrtr = (struct sockaddr_in6 *)(p + 1);
1128		n = (struct in6_prefix *)&advrtr[p->advrtrs];
1129
1130		if (getnameinfo((struct sockaddr *)&p->prefix,
1131		    p->prefix.sin6_len, namebuf, sizeof(namebuf),
1132		    NULL, 0, niflags) != 0)
1133			strlcpy(namebuf, "?", sizeof(namebuf));
1134		printf("%s/%d if=%s\n", namebuf, p->prefixlen,
1135		    if_indextoname(p->if_index, ifix_buf));
1136
1137		gettimeofday(&time, 0);
1138		/*
1139		 * meaning of fields, especially flags, is very different
1140		 * by origin.  notify the difference to the users.
1141		 */
1142		printf("flags=%s%s%s%s%s",
1143		    p->raflags.onlink ? "L" : "",
1144		    p->raflags.autonomous ? "A" : "",
1145		    (p->flags & NDPRF_ONLINK) != 0 ? "O" : "",
1146		    (p->flags & NDPRF_DETACHED) != 0 ? "D" : "",
1147#ifdef NDPRF_HOME
1148		    (p->flags & NDPRF_HOME) != 0 ? "H" : ""
1149#else
1150		    ""
1151#endif
1152		    );
1153		if (p->vltime == ND6_INFINITE_LIFETIME)
1154			printf(" vltime=infinity");
1155		else
1156			printf(" vltime=%ld", (long)p->vltime);
1157		if (p->pltime == ND6_INFINITE_LIFETIME)
1158			printf(", pltime=infinity");
1159		else
1160			printf(", pltime=%ld", (long)p->pltime);
1161		if (p->expire == 0)
1162			printf(", expire=Never");
1163		else if (p->expire >= time.tv_sec)
1164			printf(", expire=%s",
1165			    sec2str(p->expire - time.tv_sec));
1166		else
1167			printf(", expired");
1168		printf(", ref=%d", p->refcnt);
1169		printf("\n");
1170		/*
1171		 * "advertising router" list is meaningful only if the prefix
1172		 * information is from RA.
1173		 */
1174		if (p->advrtrs) {
1175			int j;
1176			struct sockaddr_in6 *sin6;
1177
1178			sin6 = (struct sockaddr_in6 *)(p + 1);
1179			printf("  advertised by\n");
1180			for (j = 0; j < p->advrtrs; j++) {
1181				struct in6_nbrinfo *nbi;
1182
1183				if (getnameinfo((struct sockaddr *)sin6,
1184				    sin6->sin6_len, namebuf, sizeof(namebuf),
1185				    NULL, 0, ninflags) != 0)
1186					strlcpy(namebuf, "?", sizeof(namebuf));
1187				printf("    %s", namebuf);
1188
1189				nbi = getnbrinfo(&sin6->sin6_addr,
1190				    p->if_index, 0);
1191				if (nbi) {
1192					switch (nbi->state) {
1193					case ND6_LLINFO_REACHABLE:
1194					case ND6_LLINFO_STALE:
1195					case ND6_LLINFO_DELAY:
1196					case ND6_LLINFO_PROBE:
1197						printf(" (reachable)\n");
1198						break;
1199					default:
1200						printf(" (unreachable)\n");
1201					}
1202				} else
1203					printf(" (no neighbor state)\n");
1204				sin6++;
1205			}
1206		} else
1207			printf("  No advertising router\n");
1208	}
1209	free(buf);
1210#else
1211	struct in6_prlist pr;
1212	int s, i;
1213	struct timeval time;
1214
1215	gettimeofday(&time, 0);
1216
1217	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1218		err(1, "socket");
1219		/* NOTREACHED */
1220	}
1221	bzero(&pr, sizeof(pr));
1222	strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */
1223	if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
1224		err(1, "ioctl(SIOCGPRLST_IN6)");
1225		/* NOTREACHED */
1226	}
1227#define PR pr.prefix[i]
1228	for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
1229		struct sockaddr_in6 p6;
1230		char namebuf[NI_MAXHOST];
1231		int niflags;
1232
1233#ifdef NDPRF_ONLINK
1234		p6 = PR.prefix;
1235#else
1236		memset(&p6, 0, sizeof(p6));
1237		p6.sin6_family = AF_INET6;
1238		p6.sin6_len = sizeof(p6);
1239		p6.sin6_addr = PR.prefix;
1240#endif
1241
1242		/*
1243		 * copy link index to sin6_scope_id field.
1244		 * XXX: KAME specific.
1245		 */
1246		if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) {
1247			u_int16_t linkid;
1248
1249			memcpy(&linkid, &p6.sin6_addr.s6_addr[2],
1250			    sizeof(linkid));
1251			linkid = ntohs(linkid);
1252			p6.sin6_scope_id = linkid;
1253			p6.sin6_addr.s6_addr[2] = 0;
1254			p6.sin6_addr.s6_addr[3] = 0;
1255		}
1256
1257		niflags = NI_NUMERICHOST;
1258		if (getnameinfo((struct sockaddr *)&p6,
1259		    sizeof(p6), namebuf, sizeof(namebuf),
1260		    NULL, 0, niflags)) {
1261			warnx("getnameinfo failed");
1262			continue;
1263		}
1264		printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
1265		    if_indextoname(PR.if_index, ifix_buf));
1266
1267		gettimeofday(&time, 0);
1268		/*
1269		 * meaning of fields, especially flags, is very different
1270		 * by origin.  notify the difference to the users.
1271		 */
1272#if 0
1273		printf("  %s",
1274		    PR.origin == PR_ORIG_RA ? "" : "advertise: ");
1275#endif
1276#ifdef NDPRF_ONLINK
1277		printf("flags=%s%s%s%s%s",
1278		    PR.raflags.onlink ? "L" : "",
1279		    PR.raflags.autonomous ? "A" : "",
1280		    (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "",
1281		    (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "",
1282#ifdef NDPRF_HOME
1283		    (PR.flags & NDPRF_HOME) != 0 ? "H" : ""
1284#else
1285		    ""
1286#endif
1287		    );
1288#else
1289		printf("flags=%s%s",
1290		    PR.raflags.onlink ? "L" : "",
1291		    PR.raflags.autonomous ? "A" : "");
1292#endif
1293		if (PR.vltime == ND6_INFINITE_LIFETIME)
1294			printf(" vltime=infinity");
1295		else
1296			printf(" vltime=%ld", (long)PR.vltime);
1297		if (PR.pltime == ND6_INFINITE_LIFETIME)
1298			printf(", pltime=infinity");
1299		else
1300			printf(", pltime=%ld", (long)PR.pltime);
1301		if (PR.expire == 0)
1302			printf(", expire=Never");
1303		else if (PR.expire >= time.tv_sec)
1304			printf(", expire=%s",
1305			    sec2str(PR.expire - time.tv_sec));
1306		else
1307			printf(", expired");
1308#ifdef NDPRF_ONLINK
1309		printf(", ref=%d", PR.refcnt);
1310#endif
1311#if 0
1312		switch (PR.origin) {
1313		case PR_ORIG_RA:
1314			printf(", origin=RA");
1315			break;
1316		case PR_ORIG_RR:
1317			printf(", origin=RR");
1318			break;
1319		case PR_ORIG_STATIC:
1320			printf(", origin=static");
1321			break;
1322		case PR_ORIG_KERNEL:
1323			printf(", origin=kernel");
1324			break;
1325		default:
1326			printf(", origin=?");
1327			break;
1328		}
1329#endif
1330		printf("\n");
1331		/*
1332		 * "advertising router" list is meaningful only if the prefix
1333		 * information is from RA.
1334		 */
1335		if (0 &&	/* prefix origin is almost obsolted */
1336		    PR.origin != PR_ORIG_RA)
1337			;
1338		else if (PR.advrtrs) {
1339			int j;
1340			printf("  advertised by\n");
1341			for (j = 0; j < PR.advrtrs; j++) {
1342				struct sockaddr_in6 sin6;
1343				struct in6_nbrinfo *nbi;
1344
1345				bzero(&sin6, sizeof(sin6));
1346				sin6.sin6_family = AF_INET6;
1347				sin6.sin6_len = sizeof(sin6);
1348				sin6.sin6_addr = PR.advrtr[j];
1349				sin6.sin6_scope_id = PR.if_index; /* XXX */
1350				getnameinfo((struct sockaddr *)&sin6,
1351				    sin6.sin6_len, host_buf,
1352				    sizeof(host_buf), NULL, 0,
1353				    (nflag ? NI_NUMERICHOST : 0));
1354				printf("    %s", host_buf);
1355
1356				nbi = getnbrinfo(&sin6.sin6_addr,
1357				    PR.if_index, 0);
1358				if (nbi) {
1359					switch (nbi->state) {
1360					case ND6_LLINFO_REACHABLE:
1361					case ND6_LLINFO_STALE:
1362					case ND6_LLINFO_DELAY:
1363					case ND6_LLINFO_PROBE:
1364						 printf(" (reachable)\n");
1365						 break;
1366					default:
1367						 printf(" (unreachable)\n");
1368					}
1369				} else
1370					printf(" (no neighbor state)\n");
1371			}
1372			if (PR.advrtrs > DRLSTSIZ)
1373				printf("    and %d routers\n",
1374				    PR.advrtrs - DRLSTSIZ);
1375		} else
1376			printf("  No advertising router\n");
1377	}
1378#undef PR
1379	close(s);
1380#endif
1381}
1382
1383void
1384pfx_flush()
1385{
1386	char dummyif[IFNAMSIZ+8];
1387	int s;
1388
1389	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1390		err(1, "socket");
1391	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1392	if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
1393		err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
1394}
1395
1396void
1397rtr_flush()
1398{
1399	char dummyif[IFNAMSIZ+8];
1400	int s;
1401
1402	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1403		err(1, "socket");
1404	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1405	if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
1406		err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
1407
1408	close(s);
1409}
1410
1411void
1412harmonize_rtr()
1413{
1414	char dummyif[IFNAMSIZ+8];
1415	int s;
1416
1417	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1418		err(1, "socket");
1419	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1420	if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
1421		err(1, "ioctl(SIOCSNDFLUSH_IN6)");
1422
1423	close(s);
1424}
1425
1426#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
1427static void
1428setdefif(ifname)
1429	char *ifname;
1430{
1431	struct in6_ndifreq ndifreq;
1432	unsigned int ifindex;
1433
1434	if (strcasecmp(ifname, "delete") == 0)
1435		ifindex = 0;
1436	else {
1437		if ((ifindex = if_nametoindex(ifname)) == 0)
1438			err(1, "failed to resolve i/f index for %s", ifname);
1439	}
1440
1441	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1442		err(1, "socket");
1443
1444	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1445	ndifreq.ifindex = ifindex;
1446
1447	if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1448		err(1, "ioctl(SIOCSDEFIFACE_IN6)");
1449
1450	close(s);
1451}
1452
1453static void
1454getdefif()
1455{
1456	struct in6_ndifreq ndifreq;
1457	char ifname[IFNAMSIZ+8];
1458
1459	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1460		err(1, "socket");
1461
1462	memset(&ndifreq, 0, sizeof(ndifreq));
1463	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1464
1465	if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1466		err(1, "ioctl(SIOCGDEFIFACE_IN6)");
1467
1468	if (ndifreq.ifindex == 0)
1469		printf("No default interface.\n");
1470	else {
1471		if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL)
1472			err(1, "failed to resolve ifname for index %lu",
1473			    ndifreq.ifindex);
1474		printf("ND default interface = %s\n", ifname);
1475	}
1476
1477	close(s);
1478}
1479#endif
1480
1481static char *
1482sec2str(total)
1483	time_t total;
1484{
1485	static char result[256];
1486	int days, hours, mins, secs;
1487	int first = 1;
1488	char *p = result;
1489	char *ep = &result[sizeof(result)];
1490	int n;
1491
1492	days = total / 3600 / 24;
1493	hours = (total / 3600) % 24;
1494	mins = (total / 60) % 60;
1495	secs = total % 60;
1496
1497	if (days) {
1498		first = 0;
1499		n = snprintf(p, ep - p, "%dd", days);
1500		if (n < 0 || n >= ep - p)
1501			return "?";
1502		p += n;
1503	}
1504	if (!first || hours) {
1505		first = 0;
1506		n = snprintf(p, ep - p, "%dh", hours);
1507		if (n < 0 || n >= ep - p)
1508			return "?";
1509		p += n;
1510	}
1511	if (!first || mins) {
1512		first = 0;
1513		n = snprintf(p, ep - p, "%dm", mins);
1514		if (n < 0 || n >= ep - p)
1515			return "?";
1516		p += n;
1517	}
1518	snprintf(p, ep - p, "%ds", secs);
1519
1520	return(result);
1521}
1522
1523/*
1524 * Print the timestamp
1525 * from tcpdump/util.c
1526 */
1527static void
1528ts_print(tvp)
1529	const struct timeval *tvp;
1530{
1531	int s;
1532
1533	/* Default */
1534	s = (tvp->tv_sec + thiszone) % 86400;
1535	(void)printf("%02d:%02d:%02d.%06u ",
1536	    s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec);
1537}
1538