ndp.c revision 167260 
1/*	$FreeBSD: head/usr.sbin/ndp/ndp.c 167260 2007-03-06 09:32:41Z kevlo $	*/
2/*	$KAME: ndp.c,v 1.104 2003/06/27 07:48:39 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 * 4. Neither the name of the University nor the names of its contributors
48 *    may be used to endorse or promote products derived from this software
49 *    without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
54 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61 * SUCH DAMAGE.
62 */
63
64/*
65 * Based on:
66 * "@(#) Copyright (c) 1984, 1993\n\
67 *	The Regents of the University of California.  All rights reserved.\n";
68 *
69 * "@(#)arp.c	8.2 (Berkeley) 1/2/94";
70 */
71
72/*
73 * ndp - display, set, delete and flush neighbor cache
74 */
75
76
77#include <sys/param.h>
78#include <sys/file.h>
79#include <sys/ioctl.h>
80#include <sys/socket.h>
81#include <sys/sysctl.h>
82#include <sys/time.h>
83#include <sys/queue.h>
84
85#include <net/if.h>
86#include <net/if_var.h>
87#include <net/if_dl.h>
88#include <net/if_types.h>
89#include <net/route.h>
90
91#include <netinet/in.h>
92#include <netinet/if_ether.h>
93
94#include <netinet/icmp6.h>
95#include <netinet6/in6_var.h>
96#include <netinet6/nd6.h>
97
98#include <arpa/inet.h>
99
100#include <netdb.h>
101#include <errno.h>
102#include <nlist.h>
103#include <stdio.h>
104#include <string.h>
105#include <paths.h>
106#include <err.h>
107#include <stdlib.h>
108#include <fcntl.h>
109#include <unistd.h>
110#include "gmt2local.h"
111
112/* packing rule for routing socket */
113#define ROUNDUP(a) \
114	((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
115#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
116
117static pid_t pid;
118static int nflag;
119static int tflag;
120static int32_t thiszone;	/* time difference with gmt */
121static int s = -1;
122static int repeat = 0;
123
124char ntop_buf[INET6_ADDRSTRLEN];	/* inet_ntop() */
125char host_buf[NI_MAXHOST];		/* getnameinfo() */
126char ifix_buf[IFNAMSIZ];		/* if_indextoname() */
127
128int main __P((int, char **));
129int file __P((char *));
130void getsocket __P((void));
131int set __P((int, char **));
132void get __P((char *));
133int delete __P((char *));
134void dump __P((struct in6_addr *, int));
135static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *, int, int));
136static char *ether_str __P((struct sockaddr_dl *));
137int ndp_ether_aton __P((char *, u_char *));
138void usage __P((void));
139int rtmsg __P((int));
140void ifinfo __P((char *, int, char **));
141void rtrlist __P((void));
142void plist __P((void));
143void pfx_flush __P((void));
144void rtr_flush __P((void));
145void harmonize_rtr __P((void));
146#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
147static void getdefif __P((void));
148static void setdefif __P((char *));
149#endif
150static char *sec2str __P((time_t));
151static char *ether_str __P((struct sockaddr_dl *));
152static void ts_print __P((const struct timeval *));
153
154#ifdef ICMPV6CTL_ND6_DRLIST
155static char *rtpref_str[] = {
156	"medium",		/* 00 */
157	"high",			/* 01 */
158	"rsv",			/* 10 */
159	"low"			/* 11 */
160};
161#endif
162
163int mode = 0;
164char *arg = NULL;
165
166int
167main(argc, argv)
168	int argc;
169	char **argv;
170{
171	int ch;
172
173	pid = getpid();
174	thiszone = gmt2local(0);
175	while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1)
176		switch (ch) {
177		case 'a':
178		case 'c':
179		case 'p':
180		case 'r':
181		case 'H':
182		case 'P':
183		case 'R':
184		case 's':
185		case 'I':
186			if (mode) {
187				usage();
188				/*NOTREACHED*/
189			}
190			mode = ch;
191			arg = NULL;
192			break;
193		case 'd':
194		case 'f':
195		case 'i' :
196			if (mode) {
197				usage();
198				/*NOTREACHED*/
199			}
200			mode = ch;
201			arg = optarg;
202			break;
203		case 'n':
204			nflag = 1;
205			break;
206		case 't':
207			tflag = 1;
208			break;
209		case 'A':
210			if (mode) {
211				usage();
212				/*NOTREACHED*/
213			}
214			mode = 'a';
215			repeat = atoi(optarg);
216			if (repeat < 0) {
217				usage();
218				/*NOTREACHED*/
219			}
220			break;
221		default:
222			usage();
223		}
224
225	argc -= optind;
226	argv += optind;
227
228	switch (mode) {
229	case 'a':
230	case 'c':
231		if (argc != 0) {
232			usage();
233			/*NOTREACHED*/
234		}
235		dump(0, mode == 'c');
236		break;
237	case 'd':
238		if (argc != 0) {
239			usage();
240			/*NOTREACHED*/
241		}
242		delete(arg);
243		break;
244	case 'I':
245#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
246		if (argc > 1) {
247			usage();
248			/*NOTREACHED*/
249		} else if (argc == 1) {
250			if (strcmp(*argv, "delete") == 0 ||
251			    if_nametoindex(*argv))
252				setdefif(*argv);
253			else
254				errx(1, "invalid interface %s", *argv);
255		}
256		getdefif(); /* always call it to print the result */
257		break;
258#else
259		errx(1, "not supported yet");
260		/*NOTREACHED*/
261#endif
262	case 'p':
263		if (argc != 0) {
264			usage();
265			/*NOTREACHED*/
266		}
267		plist();
268		break;
269	case 'i':
270		ifinfo(arg, argc, argv);
271		break;
272	case 'r':
273		if (argc != 0) {
274			usage();
275			/*NOTREACHED*/
276		}
277		rtrlist();
278		break;
279	case 's':
280		if (argc < 2 || argc > 4)
281			usage();
282		exit(set(argc, argv) ? 1 : 0);
283	case 'H':
284		if (argc != 0) {
285			usage();
286			/*NOTREACHED*/
287		}
288		harmonize_rtr();
289		break;
290	case 'P':
291		if (argc != 0) {
292			usage();
293			/*NOTREACHED*/
294		}
295		pfx_flush();
296		break;
297	case 'R':
298		if (argc != 0) {
299			usage();
300			/*NOTREACHED*/
301		}
302		rtr_flush();
303		break;
304	case 0:
305		if (argc != 1) {
306			usage();
307			/*NOTREACHED*/
308		}
309		get(argv[0]);
310		break;
311	}
312	exit(0);
313}
314
315/*
316 * Process a file to set standard ndp entries
317 */
318int
319file(name)
320	char *name;
321{
322	FILE *fp;
323	int i, retval;
324	char line[100], arg[5][50], *args[5];
325
326	if ((fp = fopen(name, "r")) == NULL) {
327		fprintf(stderr, "ndp: cannot open %s\n", name);
328		exit(1);
329	}
330	args[0] = &arg[0][0];
331	args[1] = &arg[1][0];
332	args[2] = &arg[2][0];
333	args[3] = &arg[3][0];
334	args[4] = &arg[4][0];
335	retval = 0;
336	while (fgets(line, sizeof(line), fp) != NULL) {
337		i = sscanf(line, "%49s %49s %49s %49s %49s",
338		    arg[0], arg[1], arg[2], arg[3], arg[4]);
339		if (i < 2) {
340			fprintf(stderr, "ndp: bad line: %s\n", line);
341			retval = 1;
342			continue;
343		}
344		if (set(i, args))
345			retval = 1;
346	}
347	fclose(fp);
348	return (retval);
349}
350
351void
352getsocket()
353{
354	if (s < 0) {
355		s = socket(PF_ROUTE, SOCK_RAW, 0);
356		if (s < 0) {
357			err(1, "socket");
358			/* NOTREACHED */
359		}
360	}
361}
362
363struct	sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 };
364struct	sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m;
365struct	sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m;
366int	expire_time, flags, found_entry;
367struct	{
368	struct	rt_msghdr m_rtm;
369	char	m_space[512];
370}	m_rtmsg;
371
372/*
373 * Set an individual neighbor cache entry
374 */
375int
376set(argc, argv)
377	int argc;
378	char **argv;
379{
380	register struct sockaddr_in6 *sin = &sin_m;
381	register struct sockaddr_dl *sdl;
382	register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
383	struct addrinfo hints, *res;
384	int gai_error;
385	u_char *ea;
386	char *host = argv[0], *eaddr = argv[1];
387
388	getsocket();
389	argc -= 2;
390	argv += 2;
391	sdl_m = blank_sdl;
392	sin_m = blank_sin;
393
394	bzero(&hints, sizeof(hints));
395	hints.ai_family = AF_INET6;
396	gai_error = getaddrinfo(host, NULL, &hints, &res);
397	if (gai_error) {
398		fprintf(stderr, "ndp: %s: %s\n", host,
399			gai_strerror(gai_error));
400		return 1;
401	}
402	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
403#ifdef __KAME__
404	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
405		*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
406		    htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
407	}
408#endif
409	ea = (u_char *)LLADDR(&sdl_m);
410	if (ndp_ether_aton(eaddr, ea) == 0)
411		sdl_m.sdl_alen = 6;
412	flags = expire_time = 0;
413	while (argc-- > 0) {
414		if (strncmp(argv[0], "temp", 4) == 0) {
415			struct timeval time;
416
417			gettimeofday(&time, 0);
418			expire_time = time.tv_sec + 20 * 60;
419		} else if (strncmp(argv[0], "proxy", 5) == 0)
420			flags |= RTF_ANNOUNCE;
421		argv++;
422	}
423	if (rtmsg(RTM_GET) < 0) {
424		errx(1, "RTM_GET(%s) failed", host);
425		/* NOTREACHED */
426	}
427	sin = (struct sockaddr_in6 *)(rtm + 1);
428	sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
429	if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
430		if (sdl->sdl_family == AF_LINK &&
431		    (rtm->rtm_flags & RTF_LLINFO) &&
432		    !(rtm->rtm_flags & RTF_GATEWAY)) {
433			switch (sdl->sdl_type) {
434			case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
435			case IFT_ISO88024: case IFT_ISO88025:
436				goto overwrite;
437			}
438		}
439		/*
440		 * IPv4 arp command retries with sin_other = SIN_PROXY here.
441		 */
442		fprintf(stderr, "set: cannot configure a new entry\n");
443		return 1;
444	}
445
446overwrite:
447	if (sdl->sdl_family != AF_LINK) {
448		printf("cannot intuit interface index and type for %s\n", host);
449		return (1);
450	}
451	sdl_m.sdl_type = sdl->sdl_type;
452	sdl_m.sdl_index = sdl->sdl_index;
453	return (rtmsg(RTM_ADD));
454}
455
456/*
457 * Display an individual neighbor cache entry
458 */
459void
460get(host)
461	char *host;
462{
463	struct sockaddr_in6 *sin = &sin_m;
464	struct addrinfo hints, *res;
465	int gai_error;
466
467	sin_m = blank_sin;
468	bzero(&hints, sizeof(hints));
469	hints.ai_family = AF_INET6;
470	gai_error = getaddrinfo(host, NULL, &hints, &res);
471	if (gai_error) {
472		fprintf(stderr, "ndp: %s: %s\n", host,
473		    gai_strerror(gai_error));
474		return;
475	}
476	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
477#ifdef __KAME__
478	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
479		*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
480		    htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
481	}
482#endif
483	dump(&sin->sin6_addr, 0);
484	if (found_entry == 0) {
485		getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
486		    sizeof(host_buf), NULL ,0,
487		    (nflag ? NI_NUMERICHOST : 0));
488		printf("%s (%s) -- no entry\n", host, host_buf);
489		exit(1);
490	}
491}
492
493/*
494 * Delete a neighbor cache entry
495 */
496int
497delete(host)
498	char *host;
499{
500	struct sockaddr_in6 *sin = &sin_m;
501	register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
502	struct sockaddr_dl *sdl;
503	struct addrinfo hints, *res;
504	int gai_error;
505
506	getsocket();
507	sin_m = blank_sin;
508
509	bzero(&hints, sizeof(hints));
510	hints.ai_family = AF_INET6;
511	gai_error = getaddrinfo(host, NULL, &hints, &res);
512	if (gai_error) {
513		fprintf(stderr, "ndp: %s: %s\n", host,
514		    gai_strerror(gai_error));
515		return 1;
516	}
517	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
518#ifdef __KAME__
519	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
520		*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
521		    htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
522	}
523#endif
524	if (rtmsg(RTM_GET) < 0) {
525		errx(1, "RTM_GET(%s) failed", host);
526		/* NOTREACHED */
527	}
528	sin = (struct sockaddr_in6 *)(rtm + 1);
529	sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
530	if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
531		if (sdl->sdl_family == AF_LINK &&
532		    (rtm->rtm_flags & RTF_LLINFO) &&
533		    !(rtm->rtm_flags & RTF_GATEWAY)) {
534			goto delete;
535		}
536		/*
537		 * IPv4 arp command retries with sin_other = SIN_PROXY here.
538		 */
539		fprintf(stderr, "delete: cannot delete non-NDP entry\n");
540		return 1;
541	}
542
543delete:
544	if (sdl->sdl_family != AF_LINK) {
545		printf("cannot locate %s\n", host);
546		return (1);
547	}
548	if (rtmsg(RTM_DELETE) == 0) {
549		struct sockaddr_in6 s6 = *sin; /* XXX: for safety */
550
551#ifdef __KAME__
552		if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) {
553			s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]);
554			*(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0;
555		}
556#endif
557		getnameinfo((struct sockaddr *)&s6,
558		    s6.sin6_len, host_buf,
559		    sizeof(host_buf), NULL, 0,
560		    (nflag ? NI_NUMERICHOST : 0));
561		printf("%s (%s) deleted\n", host, host_buf);
562	}
563
564	return 0;
565}
566
567#define W_ADDR	36
568#define W_LL	17
569#define W_IF	6
570
571/*
572 * Dump the entire neighbor cache
573 */
574void
575dump(addr, cflag)
576	struct in6_addr *addr;
577	int cflag;
578{
579	int mib[6];
580	size_t needed;
581	char *lim, *buf, *next;
582	struct rt_msghdr *rtm;
583	struct sockaddr_in6 *sin;
584	struct sockaddr_dl *sdl;
585	extern int h_errno;
586	struct in6_nbrinfo *nbi;
587	struct timeval time;
588	int addrwidth;
589	int llwidth;
590	int ifwidth;
591	char flgbuf[8];
592	char *ifname;
593
594	/* Print header */
595	if (!tflag && !cflag)
596		printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n",
597		    W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address",
598		    W_IF, W_IF, "Netif", "Expire", "S", "Flags");
599
600again:;
601	mib[0] = CTL_NET;
602	mib[1] = PF_ROUTE;
603	mib[2] = 0;
604	mib[3] = AF_INET6;
605	mib[4] = NET_RT_FLAGS;
606	mib[5] = RTF_LLINFO;
607	if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
608		err(1, "sysctl(PF_ROUTE estimate)");
609	if (needed > 0) {
610		if ((buf = malloc(needed)) == NULL)
611			err(1, "malloc");
612		if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
613			err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)");
614		lim = buf + needed;
615	} else
616		buf = lim = NULL;
617
618	for (next = buf; next && next < lim; next += rtm->rtm_msglen) {
619		int isrouter = 0, prbs = 0;
620
621		rtm = (struct rt_msghdr *)next;
622		sin = (struct sockaddr_in6 *)(rtm + 1);
623		sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len));
624
625		/*
626		 * Some OSes can produce a route that has the LINK flag but
627		 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD
628		 * and BSD/OS, where xx is not the interface identifier on
629		 * lo0).  Such routes entry would annoy getnbrinfo() below,
630		 * so we skip them.
631		 * XXX: such routes should have the GATEWAY flag, not the
632		 * LINK flag.  However, there is rotten routing software
633		 * that advertises all routes that have the GATEWAY flag.
634		 * Thus, KAME kernel intentionally does not set the LINK flag.
635		 * What is to be fixed is not ndp, but such routing software
636		 * (and the kernel workaround)...
637		 */
638		if (sdl->sdl_family != AF_LINK)
639			continue;
640
641		if (!(rtm->rtm_flags & RTF_HOST))
642			continue;
643
644		if (addr) {
645			if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr))
646				continue;
647			found_entry = 1;
648		} else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr))
649			continue;
650		if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) ||
651		    IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) {
652			/* XXX: should scope id be filled in the kernel? */
653			if (sin->sin6_scope_id == 0)
654				sin->sin6_scope_id = sdl->sdl_index;
655#ifdef __KAME__
656			/* KAME specific hack; removed the embedded id */
657			*(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0;
658#endif
659		}
660		getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
661		    sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0));
662		if (cflag) {
663#ifdef RTF_WASCLONED
664			if (rtm->rtm_flags & RTF_WASCLONED)
665				delete(host_buf);
666#elif defined(RTF_CLONED)
667			if (rtm->rtm_flags & RTF_CLONED)
668				delete(host_buf);
669#else
670			delete(host_buf);
671#endif
672			continue;
673		}
674		gettimeofday(&time, 0);
675		if (tflag)
676			ts_print(&time);
677
678		addrwidth = strlen(host_buf);
679		if (addrwidth < W_ADDR)
680			addrwidth = W_ADDR;
681		llwidth = strlen(ether_str(sdl));
682		if (W_ADDR + W_LL - addrwidth > llwidth)
683			llwidth = W_ADDR + W_LL - addrwidth;
684		ifname = if_indextoname(sdl->sdl_index, ifix_buf);
685		if (!ifname)
686			ifname = "?";
687		ifwidth = strlen(ifname);
688		if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth)
689			ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth;
690
691		printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf,
692		    llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname);
693
694		/* Print neighbor discovery specific informations */
695		nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1);
696		if (nbi) {
697			if (nbi->expire > time.tv_sec) {
698				printf(" %-9.9s",
699				    sec2str(nbi->expire - time.tv_sec));
700			} else if (nbi->expire == 0)
701				printf(" %-9.9s", "permanent");
702			else
703				printf(" %-9.9s", "expired");
704
705			switch (nbi->state) {
706			case ND6_LLINFO_NOSTATE:
707				 printf(" N");
708				 break;
709#ifdef ND6_LLINFO_WAITDELETE
710			case ND6_LLINFO_WAITDELETE:
711				 printf(" W");
712				 break;
713#endif
714			case ND6_LLINFO_INCOMPLETE:
715				 printf(" I");
716				 break;
717			case ND6_LLINFO_REACHABLE:
718				 printf(" R");
719				 break;
720			case ND6_LLINFO_STALE:
721				 printf(" S");
722				 break;
723			case ND6_LLINFO_DELAY:
724				 printf(" D");
725				 break;
726			case ND6_LLINFO_PROBE:
727				 printf(" P");
728				 break;
729			default:
730				 printf(" ?");
731				 break;
732			}
733
734			isrouter = nbi->isrouter;
735			prbs = nbi->asked;
736		} else {
737			warnx("failed to get neighbor information");
738			printf("  ");
739		}
740
741		/*
742		 * other flags. R: router, P: proxy, W: ??
743		 */
744		if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
745			snprintf(flgbuf, sizeof(flgbuf), "%s%s",
746			    isrouter ? "R" : "",
747			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
748		} else {
749			sin = (struct sockaddr_in6 *)
750			    (sdl->sdl_len + (char *)sdl);
751#if 0	/* W and P are mystery even for us */
752			snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s",
753			    isrouter ? "R" : "",
754			    !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "",
755			    (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "",
756			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
757#else
758			snprintf(flgbuf, sizeof(flgbuf), "%s%s",
759			    isrouter ? "R" : "",
760			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
761#endif
762		}
763		printf(" %s", flgbuf);
764
765		if (prbs)
766			printf(" %d", prbs);
767
768		printf("\n");
769	}
770	if (buf != NULL)
771		free(buf);
772
773	if (repeat) {
774		printf("\n");
775		fflush(stdout);
776		sleep(repeat);
777		goto again;
778	}
779}
780
781static struct in6_nbrinfo *
782getnbrinfo(addr, ifindex, warning)
783	struct in6_addr *addr;
784	int ifindex;
785	int warning;
786{
787	static struct in6_nbrinfo nbi;
788	int s;
789
790	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
791		err(1, "socket");
792
793	bzero(&nbi, sizeof(nbi));
794	if_indextoname(ifindex, nbi.ifname);
795	nbi.addr = *addr;
796	if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) {
797		if (warning)
798			warn("ioctl(SIOCGNBRINFO_IN6)");
799		close(s);
800		return(NULL);
801	}
802
803	close(s);
804	return(&nbi);
805}
806
807static char *
808ether_str(sdl)
809	struct sockaddr_dl *sdl;
810{
811	static char hbuf[NI_MAXHOST];
812	u_char *cp;
813
814	if (sdl->sdl_alen) {
815		cp = (u_char *)LLADDR(sdl);
816		snprintf(hbuf, sizeof(hbuf), "%x:%x:%x:%x:%x:%x",
817		    cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]);
818	} else
819		snprintf(hbuf, sizeof(hbuf), "(incomplete)");
820
821	return(hbuf);
822}
823
824int
825ndp_ether_aton(a, n)
826	char *a;
827	u_char *n;
828{
829	int i, o[6];
830
831	i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2],
832	    &o[3], &o[4], &o[5]);
833	if (i != 6) {
834		fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a);
835		return (1);
836	}
837	for (i = 0; i < 6; i++)
838		n[i] = o[i];
839	return (0);
840}
841
842void
843usage()
844{
845	printf("usage: ndp [-nt] hostname\n");
846	printf("       ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n");
847	printf("       ndp [-nt] -A wait\n");
848	printf("       ndp [-nt] -d hostname\n");
849	printf("       ndp [-nt] -f filename\n");
850	printf("       ndp [-nt] -i interface [flags...]\n");
851#ifdef SIOCSDEFIFACE_IN6
852	printf("       ndp [-nt] -I [interface|delete]\n");
853#endif
854	printf("       ndp [-nt] -s nodename etheraddr [temp] [proxy]\n");
855	exit(1);
856}
857
858int
859rtmsg(cmd)
860	int cmd;
861{
862	static int seq;
863	int rlen;
864	register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
865	register char *cp = m_rtmsg.m_space;
866	register int l;
867
868	errno = 0;
869	if (cmd == RTM_DELETE)
870		goto doit;
871	bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
872	rtm->rtm_flags = flags;
873	rtm->rtm_version = RTM_VERSION;
874
875	switch (cmd) {
876	default:
877		fprintf(stderr, "ndp: internal wrong cmd\n");
878		exit(1);
879	case RTM_ADD:
880		rtm->rtm_addrs |= RTA_GATEWAY;
881		if (expire_time) {
882			rtm->rtm_rmx.rmx_expire = expire_time;
883			rtm->rtm_inits = RTV_EXPIRE;
884		}
885		rtm->rtm_flags |= (RTF_HOST | RTF_STATIC);
886#if 0 /* we don't support ipv6addr/128 type proxying */
887		if (rtm->rtm_flags & RTF_ANNOUNCE) {
888			rtm->rtm_flags &= ~RTF_HOST;
889			rtm->rtm_addrs |= RTA_NETMASK;
890		}
891#endif
892		/* FALLTHROUGH */
893	case RTM_GET:
894		rtm->rtm_addrs |= RTA_DST;
895	}
896#define NEXTADDR(w, s) \
897	if (rtm->rtm_addrs & (w)) { \
898		bcopy((char *)&s, cp, sizeof(s)); cp += SA_SIZE(&s);}
899
900	NEXTADDR(RTA_DST, sin_m);
901	NEXTADDR(RTA_GATEWAY, sdl_m);
902#if 0 /* we don't support ipv6addr/128 type proxying */
903	memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr));
904	NEXTADDR(RTA_NETMASK, so_mask);
905#endif
906
907	rtm->rtm_msglen = cp - (char *)&m_rtmsg;
908doit:
909	l = rtm->rtm_msglen;
910	rtm->rtm_seq = ++seq;
911	rtm->rtm_type = cmd;
912	if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
913		if (errno != ESRCH || cmd != RTM_DELETE) {
914			err(1, "writing to routing socket");
915			/* NOTREACHED */
916		}
917	}
918	do {
919		l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
920	} while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
921	if (l < 0)
922		(void) fprintf(stderr, "ndp: read from routing socket: %s\n",
923		    strerror(errno));
924	return (0);
925}
926
927void
928ifinfo(ifname, argc, argv)
929	char *ifname;
930	int argc;
931	char **argv;
932{
933	struct in6_ndireq nd;
934	int i, s;
935	u_int32_t newflags;
936#ifdef IPV6CTL_USETEMPADDR
937	u_int8_t nullbuf[8];
938#endif
939
940	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
941		err(1, "socket");
942		/* NOTREACHED */
943	}
944	bzero(&nd, sizeof(nd));
945	strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
946	if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
947		err(1, "ioctl(SIOCGIFINFO_IN6)");
948		/* NOTREACHED */
949	}
950#define ND nd.ndi
951	newflags = ND.flags;
952	for (i = 0; i < argc; i++) {
953		int clear = 0;
954		char *cp = argv[i];
955
956		if (*cp == '-') {
957			clear = 1;
958			cp++;
959		}
960
961#define SETFLAG(s, f) \
962	do {\
963		if (strcmp(cp, (s)) == 0) {\
964			if (clear)\
965				newflags &= ~(f);\
966			else\
967				newflags |= (f);\
968		}\
969	} while (0)
970/*
971 * XXX: this macro is not 100% correct, in that it matches "nud" against
972 *      "nudbogus".  But we just let it go since this is minor.
973 */
974#define SETVALUE(f, v) \
975	do { \
976		char *valptr; \
977		unsigned long newval; \
978		v = 0; /* unspecified */ \
979		if (strncmp(cp, f, strlen(f)) == 0) { \
980			valptr = strchr(cp, '='); \
981			if (valptr == NULL) \
982				err(1, "syntax error in %s field", (f)); \
983			errno = 0; \
984			newval = strtoul(++valptr, NULL, 0); \
985			if (errno) \
986				err(1, "syntax error in %s's value", (f)); \
987			v = newval; \
988		} \
989	} while (0)
990
991		SETFLAG("disabled", ND6_IFF_IFDISABLED);
992		SETFLAG("nud", ND6_IFF_PERFORMNUD);
993#ifdef ND6_IFF_ACCEPT_RTADV
994		SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV);
995#endif
996#ifdef ND6_IFF_PREFER_SOURCE
997		SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE);
998#endif
999		SETVALUE("basereachable", ND.basereachable);
1000		SETVALUE("retrans", ND.retrans);
1001		SETVALUE("curhlim", ND.chlim);
1002
1003		ND.flags = newflags;
1004		if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) {
1005			err(1, "ioctl(SIOCSIFINFO_IN6)");
1006			/* NOTREACHED */
1007		}
1008#undef SETFLAG
1009#undef SETVALUE
1010	}
1011
1012	if (!ND.initialized) {
1013		errx(1, "%s: not initialized yet", ifname);
1014		/* NOTREACHED */
1015	}
1016
1017	if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
1018		err(1, "ioctl(SIOCGIFINFO_IN6)");
1019		/* NOTREACHED */
1020	}
1021	printf("linkmtu=%d", ND.linkmtu);
1022	printf(", maxmtu=%d", ND.maxmtu);
1023	printf(", curhlim=%d", ND.chlim);
1024	printf(", basereachable=%ds%dms",
1025	    ND.basereachable / 1000, ND.basereachable % 1000);
1026	printf(", reachable=%ds", ND.reachable);
1027	printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
1028#ifdef IPV6CTL_USETEMPADDR
1029	memset(nullbuf, 0, sizeof(nullbuf));
1030	if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) {
1031		int j;
1032		u_int8_t *rbuf;
1033
1034		for (i = 0; i < 3; i++) {
1035			switch (i) {
1036			case 0:
1037				printf("\nRandom seed(0): ");
1038				rbuf = ND.randomseed0;
1039				break;
1040			case 1:
1041				printf("\nRandom seed(1): ");
1042				rbuf = ND.randomseed1;
1043				break;
1044			case 2:
1045				printf("\nRandom ID:      ");
1046				rbuf = ND.randomid;
1047				break;
1048			default:
1049				errx(1, "impossible case for tempaddr display");
1050			}
1051			for (j = 0; j < 8; j++)
1052				printf("%02x", rbuf[j]);
1053		}
1054	}
1055#endif
1056	if (ND.flags) {
1057		printf("\nFlags: ");
1058#ifdef ND6_IFF_IFDISABLED
1059		if ((ND.flags & ND6_IFF_IFDISABLED))
1060			printf("disabled ");
1061#endif
1062		if ((ND.flags & ND6_IFF_PERFORMNUD))
1063			printf("nud ");
1064#ifdef ND6_IFF_ACCEPT_RTADV
1065		if ((ND.flags & ND6_IFF_ACCEPT_RTADV))
1066			printf("accept_rtadv ");
1067#endif
1068#ifdef ND6_IFF_PREFER_SOURCE
1069		if ((ND.flags & ND6_IFF_PREFER_SOURCE))
1070			printf("prefer_source ");
1071#endif
1072	}
1073	putc('\n', stdout);
1074#undef ND
1075
1076	close(s);
1077}
1078
1079#ifndef ND_RA_FLAG_RTPREF_MASK	/* XXX: just for compilation on *BSD release */
1080#define ND_RA_FLAG_RTPREF_MASK	0x18 /* 00011000 */
1081#endif
1082
1083void
1084rtrlist()
1085{
1086#ifdef ICMPV6CTL_ND6_DRLIST
1087	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST };
1088	char *buf;
1089	struct in6_defrouter *p, *ep;
1090	size_t l;
1091	struct timeval time;
1092
1093	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1094		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1095		/*NOTREACHED*/
1096	}
1097	if (l == 0)
1098		return;
1099	buf = malloc(l);
1100	if (!buf) {
1101		err(1, "malloc");
1102		/*NOTREACHED*/
1103	}
1104	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1105		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1106		/*NOTREACHED*/
1107	}
1108
1109	ep = (struct in6_defrouter *)(buf + l);
1110	for (p = (struct in6_defrouter *)buf; p < ep; p++) {
1111		int rtpref;
1112
1113		if (getnameinfo((struct sockaddr *)&p->rtaddr,
1114		    p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0,
1115		    (nflag ? NI_NUMERICHOST : 0)) != 0)
1116			strlcpy(host_buf, "?", sizeof(host_buf));
1117
1118		printf("%s if=%s", host_buf,
1119		    if_indextoname(p->if_index, ifix_buf));
1120		printf(", flags=%s%s",
1121		    p->flags & ND_RA_FLAG_MANAGED ? "M" : "",
1122		    p->flags & ND_RA_FLAG_OTHER   ? "O" : "");
1123		rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff;
1124		printf(", pref=%s", rtpref_str[rtpref]);
1125
1126		gettimeofday(&time, 0);
1127		if (p->expire == 0)
1128			printf(", expire=Never\n");
1129		else
1130			printf(", expire=%s\n",
1131			    sec2str(p->expire - time.tv_sec));
1132	}
1133	free(buf);
1134#else
1135	struct in6_drlist dr;
1136	int s, i;
1137	struct timeval time;
1138
1139	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1140		err(1, "socket");
1141		/* NOTREACHED */
1142	}
1143	bzero(&dr, sizeof(dr));
1144	strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */
1145	if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
1146		err(1, "ioctl(SIOCGDRLST_IN6)");
1147		/* NOTREACHED */
1148	}
1149#define DR dr.defrouter[i]
1150	for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) {
1151		struct sockaddr_in6 sin6;
1152
1153		bzero(&sin6, sizeof(sin6));
1154		sin6.sin6_family = AF_INET6;
1155		sin6.sin6_len = sizeof(sin6);
1156		sin6.sin6_addr = DR.rtaddr;
1157		getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf,
1158		    sizeof(host_buf), NULL, 0,
1159		    (nflag ? NI_NUMERICHOST : 0));
1160
1161		printf("%s if=%s", host_buf,
1162		    if_indextoname(DR.if_index, ifix_buf));
1163		printf(", flags=%s%s",
1164		    DR.flags & ND_RA_FLAG_MANAGED ? "M" : "",
1165		    DR.flags & ND_RA_FLAG_OTHER   ? "O" : "");
1166		gettimeofday(&time, 0);
1167		if (DR.expire == 0)
1168			printf(", expire=Never\n");
1169		else
1170			printf(", expire=%s\n",
1171			    sec2str(DR.expire - time.tv_sec));
1172	}
1173#undef DR
1174	close(s);
1175#endif
1176}
1177
1178void
1179plist()
1180{
1181#ifdef ICMPV6CTL_ND6_PRLIST
1182	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST };
1183	char *buf;
1184	struct in6_prefix *p, *ep, *n;
1185	struct sockaddr_in6 *advrtr;
1186	size_t l;
1187	struct timeval time;
1188	const int niflags = NI_NUMERICHOST;
1189	int ninflags = nflag ? NI_NUMERICHOST : 0;
1190	char namebuf[NI_MAXHOST];
1191
1192	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1193		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1194		/*NOTREACHED*/
1195	}
1196	buf = malloc(l);
1197	if (!buf) {
1198		err(1, "malloc");
1199		/*NOTREACHED*/
1200	}
1201	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1202		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1203		/*NOTREACHED*/
1204	}
1205
1206	ep = (struct in6_prefix *)(buf + l);
1207	for (p = (struct in6_prefix *)buf; p < ep; p = n) {
1208		advrtr = (struct sockaddr_in6 *)(p + 1);
1209		n = (struct in6_prefix *)&advrtr[p->advrtrs];
1210
1211		if (getnameinfo((struct sockaddr *)&p->prefix,
1212		    p->prefix.sin6_len, namebuf, sizeof(namebuf),
1213		    NULL, 0, niflags) != 0)
1214			strlcpy(namebuf, "?", sizeof(namebuf));
1215		printf("%s/%d if=%s\n", namebuf, p->prefixlen,
1216		    if_indextoname(p->if_index, ifix_buf));
1217
1218		gettimeofday(&time, 0);
1219		/*
1220		 * meaning of fields, especially flags, is very different
1221		 * by origin.  notify the difference to the users.
1222		 */
1223		printf("flags=%s%s%s%s%s",
1224		    p->raflags.onlink ? "L" : "",
1225		    p->raflags.autonomous ? "A" : "",
1226		    (p->flags & NDPRF_ONLINK) != 0 ? "O" : "",
1227		    (p->flags & NDPRF_DETACHED) != 0 ? "D" : "",
1228#ifdef NDPRF_HOME
1229		    (p->flags & NDPRF_HOME) != 0 ? "H" : ""
1230#else
1231		    ""
1232#endif
1233		    );
1234		if (p->vltime == ND6_INFINITE_LIFETIME)
1235			printf(" vltime=infinity");
1236		else
1237			printf(" vltime=%lu", (unsigned long)p->vltime);
1238		if (p->pltime == ND6_INFINITE_LIFETIME)
1239			printf(", pltime=infinity");
1240		else
1241			printf(", pltime=%lu", (unsigned long)p->pltime);
1242		if (p->expire == 0)
1243			printf(", expire=Never");
1244		else if (p->expire >= time.tv_sec)
1245			printf(", expire=%s",
1246			    sec2str(p->expire - time.tv_sec));
1247		else
1248			printf(", expired");
1249		printf(", ref=%d", p->refcnt);
1250		printf("\n");
1251		/*
1252		 * "advertising router" list is meaningful only if the prefix
1253		 * information is from RA.
1254		 */
1255		if (p->advrtrs) {
1256			int j;
1257			struct sockaddr_in6 *sin6;
1258
1259			sin6 = advrtr;
1260			printf("  advertised by\n");
1261			for (j = 0; j < p->advrtrs; j++) {
1262				struct in6_nbrinfo *nbi;
1263
1264				if (getnameinfo((struct sockaddr *)sin6,
1265				    sin6->sin6_len, namebuf, sizeof(namebuf),
1266				    NULL, 0, ninflags) != 0)
1267					strlcpy(namebuf, "?", sizeof(namebuf));
1268				printf("    %s", namebuf);
1269
1270				nbi = getnbrinfo(&sin6->sin6_addr,
1271				    p->if_index, 0);
1272				if (nbi) {
1273					switch (nbi->state) {
1274					case ND6_LLINFO_REACHABLE:
1275					case ND6_LLINFO_STALE:
1276					case ND6_LLINFO_DELAY:
1277					case ND6_LLINFO_PROBE:
1278						printf(" (reachable)\n");
1279						break;
1280					default:
1281						printf(" (unreachable)\n");
1282					}
1283				} else
1284					printf(" (no neighbor state)\n");
1285				sin6++;
1286			}
1287		} else
1288			printf("  No advertising router\n");
1289	}
1290	free(buf);
1291#else
1292	struct in6_prlist pr;
1293	int s, i;
1294	struct timeval time;
1295
1296	gettimeofday(&time, 0);
1297
1298	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1299		err(1, "socket");
1300		/* NOTREACHED */
1301	}
1302	bzero(&pr, sizeof(pr));
1303	strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */
1304	if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
1305		err(1, "ioctl(SIOCGPRLST_IN6)");
1306		/* NOTREACHED */
1307	}
1308#define PR pr.prefix[i]
1309	for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
1310		struct sockaddr_in6 p6;
1311		char namebuf[NI_MAXHOST];
1312		int niflags;
1313
1314#ifdef NDPRF_ONLINK
1315		p6 = PR.prefix;
1316#else
1317		memset(&p6, 0, sizeof(p6));
1318		p6.sin6_family = AF_INET6;
1319		p6.sin6_len = sizeof(p6);
1320		p6.sin6_addr = PR.prefix;
1321#endif
1322
1323		/*
1324		 * copy link index to sin6_scope_id field.
1325		 * XXX: KAME specific.
1326		 */
1327		if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) {
1328			u_int16_t linkid;
1329
1330			memcpy(&linkid, &p6.sin6_addr.s6_addr[2],
1331			    sizeof(linkid));
1332			linkid = ntohs(linkid);
1333			p6.sin6_scope_id = linkid;
1334			p6.sin6_addr.s6_addr[2] = 0;
1335			p6.sin6_addr.s6_addr[3] = 0;
1336		}
1337
1338		niflags = NI_NUMERICHOST;
1339		if (getnameinfo((struct sockaddr *)&p6,
1340		    sizeof(p6), namebuf, sizeof(namebuf),
1341		    NULL, 0, niflags)) {
1342			warnx("getnameinfo failed");
1343			continue;
1344		}
1345		printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
1346		    if_indextoname(PR.if_index, ifix_buf));
1347
1348		gettimeofday(&time, 0);
1349		/*
1350		 * meaning of fields, especially flags, is very different
1351		 * by origin.  notify the difference to the users.
1352		 */
1353#if 0
1354		printf("  %s",
1355		    PR.origin == PR_ORIG_RA ? "" : "advertise: ");
1356#endif
1357#ifdef NDPRF_ONLINK
1358		printf("flags=%s%s%s%s%s",
1359		    PR.raflags.onlink ? "L" : "",
1360		    PR.raflags.autonomous ? "A" : "",
1361		    (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "",
1362		    (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "",
1363#ifdef NDPRF_HOME
1364		    (PR.flags & NDPRF_HOME) != 0 ? "H" : ""
1365#else
1366		    ""
1367#endif
1368		    );
1369#else
1370		printf("flags=%s%s",
1371		    PR.raflags.onlink ? "L" : "",
1372		    PR.raflags.autonomous ? "A" : "");
1373#endif
1374		if (PR.vltime == ND6_INFINITE_LIFETIME)
1375			printf(" vltime=infinity");
1376		else
1377			printf(" vltime=%lu", PR.vltime);
1378		if (PR.pltime == ND6_INFINITE_LIFETIME)
1379			printf(", pltime=infinity");
1380		else
1381			printf(", pltime=%lu", PR.pltime);
1382		if (PR.expire == 0)
1383			printf(", expire=Never");
1384		else if (PR.expire >= time.tv_sec)
1385			printf(", expire=%s",
1386			    sec2str(PR.expire - time.tv_sec));
1387		else
1388			printf(", expired");
1389#ifdef NDPRF_ONLINK
1390		printf(", ref=%d", PR.refcnt);
1391#endif
1392#if 0
1393		switch (PR.origin) {
1394		case PR_ORIG_RA:
1395			printf(", origin=RA");
1396			break;
1397		case PR_ORIG_RR:
1398			printf(", origin=RR");
1399			break;
1400		case PR_ORIG_STATIC:
1401			printf(", origin=static");
1402			break;
1403		case PR_ORIG_KERNEL:
1404			printf(", origin=kernel");
1405			break;
1406		default:
1407			printf(", origin=?");
1408			break;
1409		}
1410#endif
1411		printf("\n");
1412		/*
1413		 * "advertising router" list is meaningful only if the prefix
1414		 * information is from RA.
1415		 */
1416		if (0 &&	/* prefix origin is almost obsolted */
1417		    PR.origin != PR_ORIG_RA)
1418			;
1419		else if (PR.advrtrs) {
1420			int j;
1421			printf("  advertised by\n");
1422			for (j = 0; j < PR.advrtrs; j++) {
1423				struct sockaddr_in6 sin6;
1424				struct in6_nbrinfo *nbi;
1425
1426				bzero(&sin6, sizeof(sin6));
1427				sin6.sin6_family = AF_INET6;
1428				sin6.sin6_len = sizeof(sin6);
1429				sin6.sin6_addr = PR.advrtr[j];
1430				sin6.sin6_scope_id = PR.if_index; /* XXX */
1431				getnameinfo((struct sockaddr *)&sin6,
1432				    sin6.sin6_len, host_buf,
1433				    sizeof(host_buf), NULL, 0,
1434				    (nflag ? NI_NUMERICHOST : 0));
1435				printf("    %s", host_buf);
1436
1437				nbi = getnbrinfo(&sin6.sin6_addr,
1438				    PR.if_index, 0);
1439				if (nbi) {
1440					switch (nbi->state) {
1441					case ND6_LLINFO_REACHABLE:
1442					case ND6_LLINFO_STALE:
1443					case ND6_LLINFO_DELAY:
1444					case ND6_LLINFO_PROBE:
1445						 printf(" (reachable)\n");
1446						 break;
1447					default:
1448						 printf(" (unreachable)\n");
1449					}
1450				} else
1451					printf(" (no neighbor state)\n");
1452			}
1453			if (PR.advrtrs > DRLSTSIZ)
1454				printf("    and %d routers\n",
1455				    PR.advrtrs - DRLSTSIZ);
1456		} else
1457			printf("  No advertising router\n");
1458	}
1459#undef PR
1460	close(s);
1461#endif
1462}
1463
1464void
1465pfx_flush()
1466{
1467	char dummyif[IFNAMSIZ+8];
1468	int s;
1469
1470	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1471		err(1, "socket");
1472	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1473	if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
1474		err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
1475}
1476
1477void
1478rtr_flush()
1479{
1480	char dummyif[IFNAMSIZ+8];
1481	int s;
1482
1483	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1484		err(1, "socket");
1485	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1486	if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
1487		err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
1488
1489	close(s);
1490}
1491
1492void
1493harmonize_rtr()
1494{
1495	char dummyif[IFNAMSIZ+8];
1496	int s;
1497
1498	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1499		err(1, "socket");
1500	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1501	if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
1502		err(1, "ioctl(SIOCSNDFLUSH_IN6)");
1503
1504	close(s);
1505}
1506
1507#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
1508static void
1509setdefif(ifname)
1510	char *ifname;
1511{
1512	struct in6_ndifreq ndifreq;
1513	unsigned int ifindex;
1514
1515	if (strcasecmp(ifname, "delete") == 0)
1516		ifindex = 0;
1517	else {
1518		if ((ifindex = if_nametoindex(ifname)) == 0)
1519			err(1, "failed to resolve i/f index for %s", ifname);
1520	}
1521
1522	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1523		err(1, "socket");
1524
1525	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1526	ndifreq.ifindex = ifindex;
1527
1528	if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1529		err(1, "ioctl(SIOCSDEFIFACE_IN6)");
1530
1531	close(s);
1532}
1533
1534static void
1535getdefif()
1536{
1537	struct in6_ndifreq ndifreq;
1538	char ifname[IFNAMSIZ+8];
1539
1540	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1541		err(1, "socket");
1542
1543	memset(&ndifreq, 0, sizeof(ndifreq));
1544	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1545
1546	if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1547		err(1, "ioctl(SIOCGDEFIFACE_IN6)");
1548
1549	if (ndifreq.ifindex == 0)
1550		printf("No default interface.\n");
1551	else {
1552		if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL)
1553			err(1, "failed to resolve ifname for index %lu",
1554			    ndifreq.ifindex);
1555		printf("ND default interface = %s\n", ifname);
1556	}
1557
1558	close(s);
1559}
1560#endif
1561
1562static char *
1563sec2str(total)
1564	time_t total;
1565{
1566	static char result[256];
1567	int days, hours, mins, secs;
1568	int first = 1;
1569	char *p = result;
1570	char *ep = &result[sizeof(result)];
1571	int n;
1572
1573	days = total / 3600 / 24;
1574	hours = (total / 3600) % 24;
1575	mins = (total / 60) % 60;
1576	secs = total % 60;
1577
1578	if (days) {
1579		first = 0;
1580		n = snprintf(p, ep - p, "%dd", days);
1581		if (n < 0 || n >= ep - p)
1582			return "?";
1583		p += n;
1584	}
1585	if (!first || hours) {
1586		first = 0;
1587		n = snprintf(p, ep - p, "%dh", hours);
1588		if (n < 0 || n >= ep - p)
1589			return "?";
1590		p += n;
1591	}
1592	if (!first || mins) {
1593		first = 0;
1594		n = snprintf(p, ep - p, "%dm", mins);
1595		if (n < 0 || n >= ep - p)
1596			return "?";
1597		p += n;
1598	}
1599	snprintf(p, ep - p, "%ds", secs);
1600
1601	return(result);
1602}
1603
1604/*
1605 * Print the timestamp
1606 * from tcpdump/util.c
1607 */
1608static void
1609ts_print(tvp)
1610	const struct timeval *tvp;
1611{
1612	int s;
1613
1614	/* Default */
1615	s = (tvp->tv_sec + thiszone) % 86400;
1616	(void)printf("%02d:%02d:%02d.%06u ",
1617	    s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec);
1618}
1619