ndp.c revision 210936 
1/*	$FreeBSD: head/usr.sbin/ndp/ndp.c 210936 2010-08-06 15:09:21Z jhb $	*/
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
117#define NEXTADDR(w, s) \
118	if (rtm->rtm_addrs & (w)) { \
119		bcopy((char *)&s, cp, sizeof(s)); cp += SA_SIZE(&s);}
120
121
122static pid_t pid;
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(int, char **);
134int file(char *);
135void getsocket(void);
136int set(int, char **);
137void get(char *);
138int delete(char *);
139void dump(struct in6_addr *, int);
140static struct in6_nbrinfo *getnbrinfo(struct in6_addr *, int, int);
141static char *ether_str(struct sockaddr_dl *);
142int ndp_ether_aton(char *, u_char *);
143void usage(void);
144int rtmsg(int);
145void ifinfo(char *, int, char **);
146void rtrlist(void);
147void plist(void);
148void pfx_flush(void);
149void rtr_flush(void);
150void harmonize_rtr(void);
151#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
152static void getdefif(void);
153static void setdefif(char *);
154#endif
155static char *sec2str(time_t);
156static char *ether_str(struct sockaddr_dl *);
157static void ts_print(const struct timeval *);
158
159#ifdef ICMPV6CTL_ND6_DRLIST
160static char *rtpref_str[] = {
161	"medium",		/* 00 */
162	"high",			/* 01 */
163	"rsv",			/* 10 */
164	"low"			/* 11 */
165};
166#endif
167
168int mode = 0;
169char *arg = NULL;
170
171int
172main(argc, argv)
173	int argc;
174	char **argv;
175{
176	int ch;
177
178	pid = getpid();
179	thiszone = gmt2local(0);
180	while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1)
181		switch (ch) {
182		case 'a':
183		case 'c':
184		case 'p':
185		case 'r':
186		case 'H':
187		case 'P':
188		case 'R':
189		case 's':
190		case 'I':
191			if (mode) {
192				usage();
193				/*NOTREACHED*/
194			}
195			mode = ch;
196			arg = NULL;
197			break;
198		case 'd':
199		case 'f':
200		case 'i' :
201			if (mode) {
202				usage();
203				/*NOTREACHED*/
204			}
205			mode = ch;
206			arg = optarg;
207			break;
208		case 'n':
209			nflag = 1;
210			break;
211		case 't':
212			tflag = 1;
213			break;
214		case 'A':
215			if (mode) {
216				usage();
217				/*NOTREACHED*/
218			}
219			mode = 'a';
220			repeat = atoi(optarg);
221			if (repeat < 0) {
222				usage();
223				/*NOTREACHED*/
224			}
225			break;
226		default:
227			usage();
228		}
229
230	argc -= optind;
231	argv += optind;
232
233	switch (mode) {
234	case 'a':
235	case 'c':
236		if (argc != 0) {
237			usage();
238			/*NOTREACHED*/
239		}
240		dump(0, mode == 'c');
241		break;
242	case 'd':
243		if (argc != 0) {
244			usage();
245			/*NOTREACHED*/
246		}
247		delete(arg);
248		break;
249	case 'I':
250#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
251		if (argc > 1) {
252			usage();
253			/*NOTREACHED*/
254		} else if (argc == 1) {
255			if (strcmp(*argv, "delete") == 0 ||
256			    if_nametoindex(*argv))
257				setdefif(*argv);
258			else
259				errx(1, "invalid interface %s", *argv);
260		}
261		getdefif(); /* always call it to print the result */
262		break;
263#else
264		errx(1, "not supported yet");
265		/*NOTREACHED*/
266#endif
267	case 'p':
268		if (argc != 0) {
269			usage();
270			/*NOTREACHED*/
271		}
272		plist();
273		break;
274	case 'i':
275		ifinfo(arg, argc, argv);
276		break;
277	case 'r':
278		if (argc != 0) {
279			usage();
280			/*NOTREACHED*/
281		}
282		rtrlist();
283		break;
284	case 's':
285		if (argc < 2 || argc > 4)
286			usage();
287		exit(set(argc, argv) ? 1 : 0);
288	case 'H':
289		if (argc != 0) {
290			usage();
291			/*NOTREACHED*/
292		}
293		harmonize_rtr();
294		break;
295	case 'P':
296		if (argc != 0) {
297			usage();
298			/*NOTREACHED*/
299		}
300		pfx_flush();
301		break;
302	case 'R':
303		if (argc != 0) {
304			usage();
305			/*NOTREACHED*/
306		}
307		rtr_flush();
308		break;
309	case 0:
310		if (argc != 1) {
311			usage();
312			/*NOTREACHED*/
313		}
314		get(argv[0]);
315		break;
316	}
317	exit(0);
318}
319
320/*
321 * Process a file to set standard ndp entries
322 */
323int
324file(name)
325	char *name;
326{
327	FILE *fp;
328	int i, retval;
329	char line[100], arg[5][50], *args[5];
330
331	if ((fp = fopen(name, "r")) == NULL) {
332		fprintf(stderr, "ndp: cannot open %s\n", name);
333		exit(1);
334	}
335	args[0] = &arg[0][0];
336	args[1] = &arg[1][0];
337	args[2] = &arg[2][0];
338	args[3] = &arg[3][0];
339	args[4] = &arg[4][0];
340	retval = 0;
341	while (fgets(line, sizeof(line), fp) != NULL) {
342		i = sscanf(line, "%49s %49s %49s %49s %49s",
343		    arg[0], arg[1], arg[2], arg[3], arg[4]);
344		if (i < 2) {
345			fprintf(stderr, "ndp: bad line: %s\n", line);
346			retval = 1;
347			continue;
348		}
349		if (set(i, args))
350			retval = 1;
351	}
352	fclose(fp);
353	return (retval);
354}
355
356void
357getsocket()
358{
359	if (s < 0) {
360		s = socket(PF_ROUTE, SOCK_RAW, 0);
361		if (s < 0) {
362			err(1, "socket");
363			/* NOTREACHED */
364		}
365	}
366}
367
368struct	sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 };
369struct	sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m;
370struct	sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m;
371int	expire_time, flags, found_entry;
372struct	{
373	struct	rt_msghdr m_rtm;
374	char	m_space[512];
375}	m_rtmsg;
376
377/*
378 * Set an individual neighbor cache entry
379 */
380int
381set(argc, argv)
382	int argc;
383	char **argv;
384{
385	register struct sockaddr_in6 *sin = &sin_m;
386	register struct sockaddr_dl *sdl;
387	register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
388	struct addrinfo hints, *res;
389	int gai_error;
390	u_char *ea;
391	char *host = argv[0], *eaddr = argv[1];
392
393	getsocket();
394	argc -= 2;
395	argv += 2;
396	sdl_m = blank_sdl;
397	sin_m = blank_sin;
398
399	bzero(&hints, sizeof(hints));
400	hints.ai_family = AF_INET6;
401	gai_error = getaddrinfo(host, NULL, &hints, &res);
402	if (gai_error) {
403		fprintf(stderr, "ndp: %s: %s\n", host,
404			gai_strerror(gai_error));
405		return 1;
406	}
407	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
408#ifdef __KAME__
409	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
410		*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
411		    htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
412	}
413#endif
414	ea = (u_char *)LLADDR(&sdl_m);
415	if (ndp_ether_aton(eaddr, ea) == 0)
416		sdl_m.sdl_alen = 6;
417	flags = expire_time = 0;
418	while (argc-- > 0) {
419		if (strncmp(argv[0], "temp", 4) == 0) {
420			struct timeval time;
421
422			gettimeofday(&time, 0);
423			expire_time = time.tv_sec + 20 * 60;
424		} else if (strncmp(argv[0], "proxy", 5) == 0)
425			flags |= RTF_ANNOUNCE;
426		argv++;
427	}
428	if (rtmsg(RTM_GET) < 0) {
429		errx(1, "RTM_GET(%s) failed", host);
430		/* NOTREACHED */
431	}
432	sin = (struct sockaddr_in6 *)(rtm + 1);
433	sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
434	if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
435		if (sdl->sdl_family == AF_LINK &&
436		    !(rtm->rtm_flags & RTF_GATEWAY)) {
437			switch (sdl->sdl_type) {
438			case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
439			case IFT_ISO88024: case IFT_ISO88025:
440			case IFT_L2VLAN: case IFT_BRIDGE:
441				goto overwrite;
442			}
443		}
444		/*
445		 * IPv4 arp command retries with sin_other = SIN_PROXY here.
446		 */
447		fprintf(stderr, "set: cannot configure a new entry\n");
448		return 1;
449	}
450
451overwrite:
452	if (sdl->sdl_family != AF_LINK) {
453		printf("cannot intuit interface index and type for %s\n", host);
454		return (1);
455	}
456	sdl_m.sdl_type = sdl->sdl_type;
457	sdl_m.sdl_index = sdl->sdl_index;
458	return (rtmsg(RTM_ADD));
459}
460
461/*
462 * Display an individual neighbor cache entry
463 */
464void
465get(host)
466	char *host;
467{
468	struct sockaddr_in6 *sin = &sin_m;
469	struct addrinfo hints, *res;
470	int gai_error;
471
472	sin_m = blank_sin;
473	bzero(&hints, sizeof(hints));
474	hints.ai_family = AF_INET6;
475	gai_error = getaddrinfo(host, NULL, &hints, &res);
476	if (gai_error) {
477		fprintf(stderr, "ndp: %s: %s\n", host,
478		    gai_strerror(gai_error));
479		return;
480	}
481	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
482#ifdef __KAME__
483	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
484		*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
485		    htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
486	}
487#endif
488	dump(&sin->sin6_addr, 0);
489	if (found_entry == 0) {
490		getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
491		    sizeof(host_buf), NULL ,0,
492		    (nflag ? NI_NUMERICHOST : 0));
493		printf("%s (%s) -- no entry\n", host, host_buf);
494		exit(1);
495	}
496}
497
498/*
499 * Delete a neighbor cache entry
500 */
501int
502delete(host)
503	char *host;
504{
505	struct sockaddr_in6 *sin = &sin_m;
506	register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
507	register char *cp = m_rtmsg.m_space;
508	struct sockaddr_dl *sdl;
509	struct addrinfo hints, *res;
510	int gai_error;
511
512	getsocket();
513	sin_m = blank_sin;
514
515	bzero(&hints, sizeof(hints));
516	hints.ai_family = AF_INET6;
517	gai_error = getaddrinfo(host, NULL, &hints, &res);
518	if (gai_error) {
519		fprintf(stderr, "ndp: %s: %s\n", host,
520		    gai_strerror(gai_error));
521		return 1;
522	}
523	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
524#ifdef __KAME__
525	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
526		*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
527		    htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
528	}
529#endif
530	if (rtmsg(RTM_GET) < 0) {
531		errx(1, "RTM_GET(%s) failed", host);
532		/* NOTREACHED */
533	}
534	sin = (struct sockaddr_in6 *)(rtm + 1);
535	sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
536	if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
537		if (sdl->sdl_family == AF_LINK &&
538		    !(rtm->rtm_flags & RTF_GATEWAY)) {
539			goto delete;
540		}
541		/*
542		 * IPv4 arp command retries with sin_other = SIN_PROXY here.
543		 */
544		fprintf(stderr, "delete: cannot delete non-NDP entry\n");
545		return 1;
546	}
547
548delete:
549	if (sdl->sdl_family != AF_LINK) {
550		printf("cannot locate %s\n", host);
551		return (1);
552	}
553        /*
554         * need to reinit the field because it has rt_key
555         * but we want the actual address
556         */
557	NEXTADDR(RTA_DST, sin_m);
558	rtm->rtm_flags |= RTF_LLDATA;
559	if (rtmsg(RTM_DELETE) == 0) {
560		struct sockaddr_in6 s6 = *sin; /* XXX: for safety */
561
562#ifdef __KAME__
563		if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) {
564			s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]);
565			*(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0;
566		}
567#endif
568		getnameinfo((struct sockaddr *)&s6,
569		    s6.sin6_len, host_buf,
570		    sizeof(host_buf), NULL, 0,
571		    (nflag ? NI_NUMERICHOST : 0));
572		printf("%s (%s) deleted\n", host, host_buf);
573	}
574
575	return 0;
576}
577
578#define W_ADDR	36
579#define W_LL	17
580#define W_IF	6
581
582/*
583 * Dump the entire neighbor cache
584 */
585void
586dump(addr, cflag)
587	struct in6_addr *addr;
588	int cflag;
589{
590	int mib[6];
591	size_t needed;
592	char *lim, *buf, *next;
593	struct rt_msghdr *rtm;
594	struct sockaddr_in6 *sin;
595	struct sockaddr_dl *sdl;
596	extern int h_errno;
597	struct in6_nbrinfo *nbi;
598	struct timeval time;
599	int addrwidth;
600	int llwidth;
601	int ifwidth;
602	char flgbuf[8];
603	char *ifname;
604
605	/* Print header */
606	if (!tflag && !cflag)
607		printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n",
608		    W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address",
609		    W_IF, W_IF, "Netif", "Expire", "S", "Flags");
610
611again:;
612	mib[0] = CTL_NET;
613	mib[1] = PF_ROUTE;
614	mib[2] = 0;
615	mib[3] = AF_INET6;
616	mib[4] = NET_RT_FLAGS;
617#ifdef RTF_LLINFO
618	mib[5] = RTF_LLINFO;
619#else
620	mib[5] = 0;
621#endif
622	if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
623		err(1, "sysctl(PF_ROUTE estimate)");
624	if (needed > 0) {
625		if ((buf = malloc(needed)) == NULL)
626			err(1, "malloc");
627		if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
628			err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)");
629		lim = buf + needed;
630	} else
631		buf = lim = NULL;
632
633	for (next = buf; next && next < lim; next += rtm->rtm_msglen) {
634		int isrouter = 0, prbs = 0;
635
636		rtm = (struct rt_msghdr *)next;
637		sin = (struct sockaddr_in6 *)(rtm + 1);
638		sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len));
639
640		/*
641		 * Some OSes can produce a route that has the LINK flag but
642		 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD
643		 * and BSD/OS, where xx is not the interface identifier on
644		 * lo0).  Such routes entry would annoy getnbrinfo() below,
645		 * so we skip them.
646		 * XXX: such routes should have the GATEWAY flag, not the
647		 * LINK flag.  However, there is rotten routing software
648		 * that advertises all routes that have the GATEWAY flag.
649		 * Thus, KAME kernel intentionally does not set the LINK flag.
650		 * What is to be fixed is not ndp, but such routing software
651		 * (and the kernel workaround)...
652		 */
653		if (sdl->sdl_family != AF_LINK)
654			continue;
655
656		if (!(rtm->rtm_flags & RTF_HOST))
657			continue;
658
659		if (addr) {
660			if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr))
661				continue;
662			found_entry = 1;
663		} else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr))
664			continue;
665		if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) ||
666		    IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) {
667			/* XXX: should scope id be filled in the kernel? */
668			if (sin->sin6_scope_id == 0)
669				sin->sin6_scope_id = sdl->sdl_index;
670#ifdef __KAME__
671			/* KAME specific hack; removed the embedded id */
672			*(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0;
673#endif
674		}
675		getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
676		    sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0));
677		if (cflag) {
678#ifdef RTF_WASCLONED
679			if (rtm->rtm_flags & RTF_WASCLONED)
680				delete(host_buf);
681#elif defined(RTF_CLONED)
682			if (rtm->rtm_flags & RTF_CLONED)
683				delete(host_buf);
684#else
685			delete(host_buf);
686#endif
687			continue;
688		}
689		gettimeofday(&time, 0);
690		if (tflag)
691			ts_print(&time);
692
693		addrwidth = strlen(host_buf);
694		if (addrwidth < W_ADDR)
695			addrwidth = W_ADDR;
696		llwidth = strlen(ether_str(sdl));
697		if (W_ADDR + W_LL - addrwidth > llwidth)
698			llwidth = W_ADDR + W_LL - addrwidth;
699		ifname = if_indextoname(sdl->sdl_index, ifix_buf);
700		if (!ifname)
701			ifname = "?";
702		ifwidth = strlen(ifname);
703		if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth)
704			ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth;
705
706		printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf,
707		    llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname);
708
709		/* Print neighbor discovery specific informations */
710		nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1);
711		if (nbi) {
712			if (nbi->expire > time.tv_sec) {
713				printf(" %-9.9s",
714				    sec2str(nbi->expire - time.tv_sec));
715			} else if (nbi->expire == 0)
716				printf(" %-9.9s", "permanent");
717			else
718				printf(" %-9.9s", "expired");
719
720			switch (nbi->state) {
721			case ND6_LLINFO_NOSTATE:
722				 printf(" N");
723				 break;
724#ifdef ND6_LLINFO_WAITDELETE
725			case ND6_LLINFO_WAITDELETE:
726				 printf(" W");
727				 break;
728#endif
729			case ND6_LLINFO_INCOMPLETE:
730				 printf(" I");
731				 break;
732			case ND6_LLINFO_REACHABLE:
733				 printf(" R");
734				 break;
735			case ND6_LLINFO_STALE:
736				 printf(" S");
737				 break;
738			case ND6_LLINFO_DELAY:
739				 printf(" D");
740				 break;
741			case ND6_LLINFO_PROBE:
742				 printf(" P");
743				 break;
744			default:
745				 printf(" ?");
746				 break;
747			}
748
749			isrouter = nbi->isrouter;
750			prbs = nbi->asked;
751		} else {
752			warnx("failed to get neighbor information");
753			printf("  ");
754		}
755
756		/*
757		 * other flags. R: router, P: proxy, W: ??
758		 */
759		if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
760			snprintf(flgbuf, sizeof(flgbuf), "%s%s",
761			    isrouter ? "R" : "",
762			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
763		} else {
764			sin = (struct sockaddr_in6 *)
765			    (sdl->sdl_len + (char *)sdl);
766#if 0	/* W and P are mystery even for us */
767			snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s",
768			    isrouter ? "R" : "",
769			    !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "",
770			    (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "",
771			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
772#else
773			snprintf(flgbuf, sizeof(flgbuf), "%s%s",
774			    isrouter ? "R" : "",
775			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
776#endif
777		}
778		printf(" %s", flgbuf);
779
780		if (prbs)
781			printf(" %d", prbs);
782
783		printf("\n");
784	}
785	if (buf != NULL)
786		free(buf);
787
788	if (repeat) {
789		printf("\n");
790		fflush(stdout);
791		sleep(repeat);
792		goto again;
793	}
794}
795
796static struct in6_nbrinfo *
797getnbrinfo(addr, ifindex, warning)
798	struct in6_addr *addr;
799	int ifindex;
800	int warning;
801{
802	static struct in6_nbrinfo nbi;
803	int s;
804
805	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
806		err(1, "socket");
807
808	bzero(&nbi, sizeof(nbi));
809	if_indextoname(ifindex, nbi.ifname);
810	nbi.addr = *addr;
811	if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) {
812		if (warning)
813			warn("ioctl(SIOCGNBRINFO_IN6)");
814		close(s);
815		return(NULL);
816	}
817
818	close(s);
819	return(&nbi);
820}
821
822static char *
823ether_str(sdl)
824	struct sockaddr_dl *sdl;
825{
826	static char hbuf[NI_MAXHOST];
827	u_char *cp;
828
829	if (sdl->sdl_alen) {
830		cp = (u_char *)LLADDR(sdl);
831		snprintf(hbuf, sizeof(hbuf), "%x:%x:%x:%x:%x:%x",
832		    cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]);
833	} else
834		snprintf(hbuf, sizeof(hbuf), "(incomplete)");
835
836	return(hbuf);
837}
838
839int
840ndp_ether_aton(a, n)
841	char *a;
842	u_char *n;
843{
844	int i, o[6];
845
846	i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2],
847	    &o[3], &o[4], &o[5]);
848	if (i != 6) {
849		fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a);
850		return (1);
851	}
852	for (i = 0; i < 6; i++)
853		n[i] = o[i];
854	return (0);
855}
856
857void
858usage()
859{
860	printf("usage: ndp [-nt] hostname\n");
861	printf("       ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n");
862	printf("       ndp [-nt] -A wait\n");
863	printf("       ndp [-nt] -d hostname\n");
864	printf("       ndp [-nt] -f filename\n");
865	printf("       ndp [-nt] -i interface [flags...]\n");
866#ifdef SIOCSDEFIFACE_IN6
867	printf("       ndp [-nt] -I [interface|delete]\n");
868#endif
869	printf("       ndp [-nt] -s nodename etheraddr [temp] [proxy]\n");
870	exit(1);
871}
872
873int
874rtmsg(cmd)
875	int cmd;
876{
877	static int seq;
878	int rlen;
879	register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
880	register char *cp = m_rtmsg.m_space;
881	register int l;
882
883	errno = 0;
884	if (cmd == RTM_DELETE)
885		goto doit;
886	bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
887	rtm->rtm_flags = flags;
888	rtm->rtm_version = RTM_VERSION;
889
890	switch (cmd) {
891	default:
892		fprintf(stderr, "ndp: internal wrong cmd\n");
893		exit(1);
894	case RTM_ADD:
895		rtm->rtm_addrs |= RTA_GATEWAY;
896		if (expire_time) {
897			rtm->rtm_rmx.rmx_expire = expire_time;
898			rtm->rtm_inits = RTV_EXPIRE;
899		}
900		rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA);
901#if 0 /* we don't support ipv6addr/128 type proxying */
902		if (rtm->rtm_flags & RTF_ANNOUNCE) {
903			rtm->rtm_flags &= ~RTF_HOST;
904			rtm->rtm_addrs |= RTA_NETMASK;
905		}
906#endif
907		/* FALLTHROUGH */
908	case RTM_GET:
909		rtm->rtm_addrs |= RTA_DST;
910	}
911
912	NEXTADDR(RTA_DST, sin_m);
913	NEXTADDR(RTA_GATEWAY, sdl_m);
914#if 0 /* we don't support ipv6addr/128 type proxying */
915	memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr));
916	NEXTADDR(RTA_NETMASK, so_mask);
917#endif
918
919	rtm->rtm_msglen = cp - (char *)&m_rtmsg;
920doit:
921	l = rtm->rtm_msglen;
922	rtm->rtm_seq = ++seq;
923	rtm->rtm_type = cmd;
924	if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
925		if (errno != ESRCH || cmd != RTM_DELETE) {
926			err(1, "writing to routing socket");
927			/* NOTREACHED */
928		}
929	}
930	do {
931		l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
932	} while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
933	if (l < 0)
934		(void) fprintf(stderr, "ndp: read from routing socket: %s\n",
935		    strerror(errno));
936	return (0);
937}
938
939void
940ifinfo(ifname, argc, argv)
941	char *ifname;
942	int argc;
943	char **argv;
944{
945	struct in6_ndireq nd;
946	int i, s;
947	u_int32_t newflags;
948#ifdef IPV6CTL_USETEMPADDR
949	u_int8_t nullbuf[8];
950#endif
951
952	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
953		err(1, "socket");
954		/* NOTREACHED */
955	}
956	bzero(&nd, sizeof(nd));
957	strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
958	if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
959		err(1, "ioctl(SIOCGIFINFO_IN6)");
960		/* NOTREACHED */
961	}
962#define ND nd.ndi
963	newflags = ND.flags;
964	for (i = 0; i < argc; i++) {
965		int clear = 0;
966		char *cp = argv[i];
967
968		if (*cp == '-') {
969			clear = 1;
970			cp++;
971		}
972
973#define SETFLAG(s, f) \
974	do {\
975		if (strcmp(cp, (s)) == 0) {\
976			if (clear)\
977				newflags &= ~(f);\
978			else\
979				newflags |= (f);\
980		}\
981	} while (0)
982/*
983 * XXX: this macro is not 100% correct, in that it matches "nud" against
984 *      "nudbogus".  But we just let it go since this is minor.
985 */
986#define SETVALUE(f, v) \
987	do { \
988		char *valptr; \
989		unsigned long newval; \
990		v = 0; /* unspecified */ \
991		if (strncmp(cp, f, strlen(f)) == 0) { \
992			valptr = strchr(cp, '='); \
993			if (valptr == NULL) \
994				err(1, "syntax error in %s field", (f)); \
995			errno = 0; \
996			newval = strtoul(++valptr, NULL, 0); \
997			if (errno) \
998				err(1, "syntax error in %s's value", (f)); \
999			v = newval; \
1000		} \
1001	} while (0)
1002
1003		SETFLAG("disabled", ND6_IFF_IFDISABLED);
1004		SETFLAG("nud", ND6_IFF_PERFORMNUD);
1005#ifdef ND6_IFF_ACCEPT_RTADV
1006		SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV);
1007#endif
1008#ifdef ND6_IFF_AUTO_LINKLOCAL
1009		SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL);
1010#endif
1011#ifdef ND6_IFF_PREFER_SOURCE
1012		SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE);
1013#endif
1014		SETVALUE("basereachable", ND.basereachable);
1015		SETVALUE("retrans", ND.retrans);
1016		SETVALUE("curhlim", ND.chlim);
1017
1018		ND.flags = newflags;
1019		if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) {
1020			err(1, "ioctl(SIOCSIFINFO_IN6)");
1021			/* NOTREACHED */
1022		}
1023#undef SETFLAG
1024#undef SETVALUE
1025	}
1026
1027	if (!ND.initialized) {
1028		errx(1, "%s: not initialized yet", ifname);
1029		/* NOTREACHED */
1030	}
1031
1032	if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
1033		err(1, "ioctl(SIOCGIFINFO_IN6)");
1034		/* NOTREACHED */
1035	}
1036	printf("linkmtu=%d", ND.linkmtu);
1037	printf(", maxmtu=%d", ND.maxmtu);
1038	printf(", curhlim=%d", ND.chlim);
1039	printf(", basereachable=%ds%dms",
1040	    ND.basereachable / 1000, ND.basereachable % 1000);
1041	printf(", reachable=%ds", ND.reachable);
1042	printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
1043#ifdef IPV6CTL_USETEMPADDR
1044	memset(nullbuf, 0, sizeof(nullbuf));
1045	if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) {
1046		int j;
1047		u_int8_t *rbuf;
1048
1049		for (i = 0; i < 3; i++) {
1050			switch (i) {
1051			case 0:
1052				printf("\nRandom seed(0): ");
1053				rbuf = ND.randomseed0;
1054				break;
1055			case 1:
1056				printf("\nRandom seed(1): ");
1057				rbuf = ND.randomseed1;
1058				break;
1059			case 2:
1060				printf("\nRandom ID:      ");
1061				rbuf = ND.randomid;
1062				break;
1063			default:
1064				errx(1, "impossible case for tempaddr display");
1065			}
1066			for (j = 0; j < 8; j++)
1067				printf("%02x", rbuf[j]);
1068		}
1069	}
1070#endif
1071	if (ND.flags) {
1072		printf("\nFlags: ");
1073#ifdef ND6_IFF_IFDISABLED
1074		if ((ND.flags & ND6_IFF_IFDISABLED))
1075			printf("disabled ");
1076#endif
1077		if ((ND.flags & ND6_IFF_PERFORMNUD))
1078			printf("nud ");
1079#ifdef ND6_IFF_ACCEPT_RTADV
1080		if ((ND.flags & ND6_IFF_ACCEPT_RTADV))
1081			printf("accept_rtadv ");
1082#endif
1083#ifdef ND6_IFF_AUTO_LINKLOCAL
1084		if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL))
1085			printf("auto_linklocal ");
1086#endif
1087#ifdef ND6_IFF_PREFER_SOURCE
1088		if ((ND.flags & ND6_IFF_PREFER_SOURCE))
1089			printf("prefer_source ");
1090#endif
1091	}
1092	putc('\n', stdout);
1093#undef ND
1094
1095	close(s);
1096}
1097
1098#ifndef ND_RA_FLAG_RTPREF_MASK	/* XXX: just for compilation on *BSD release */
1099#define ND_RA_FLAG_RTPREF_MASK	0x18 /* 00011000 */
1100#endif
1101
1102void
1103rtrlist()
1104{
1105#ifdef ICMPV6CTL_ND6_DRLIST
1106	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST };
1107	char *buf;
1108	struct in6_defrouter *p, *ep;
1109	size_t l;
1110	struct timeval time;
1111
1112	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1113		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1114		/*NOTREACHED*/
1115	}
1116	if (l == 0)
1117		return;
1118	buf = malloc(l);
1119	if (!buf) {
1120		err(1, "malloc");
1121		/*NOTREACHED*/
1122	}
1123	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1124		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1125		/*NOTREACHED*/
1126	}
1127
1128	ep = (struct in6_defrouter *)(buf + l);
1129	for (p = (struct in6_defrouter *)buf; p < ep; p++) {
1130		int rtpref;
1131
1132		if (getnameinfo((struct sockaddr *)&p->rtaddr,
1133		    p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0,
1134		    (nflag ? NI_NUMERICHOST : 0)) != 0)
1135			strlcpy(host_buf, "?", sizeof(host_buf));
1136
1137		printf("%s if=%s", host_buf,
1138		    if_indextoname(p->if_index, ifix_buf));
1139		printf(", flags=%s%s",
1140		    p->flags & ND_RA_FLAG_MANAGED ? "M" : "",
1141		    p->flags & ND_RA_FLAG_OTHER   ? "O" : "");
1142		rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff;
1143		printf(", pref=%s", rtpref_str[rtpref]);
1144
1145		gettimeofday(&time, 0);
1146		if (p->expire == 0)
1147			printf(", expire=Never\n");
1148		else
1149			printf(", expire=%s\n",
1150			    sec2str(p->expire - time.tv_sec));
1151	}
1152	free(buf);
1153#else
1154	struct in6_drlist dr;
1155	int s, i;
1156	struct timeval time;
1157
1158	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1159		err(1, "socket");
1160		/* NOTREACHED */
1161	}
1162	bzero(&dr, sizeof(dr));
1163	strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */
1164	if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
1165		err(1, "ioctl(SIOCGDRLST_IN6)");
1166		/* NOTREACHED */
1167	}
1168#define DR dr.defrouter[i]
1169	for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) {
1170		struct sockaddr_in6 sin6;
1171
1172		bzero(&sin6, sizeof(sin6));
1173		sin6.sin6_family = AF_INET6;
1174		sin6.sin6_len = sizeof(sin6);
1175		sin6.sin6_addr = DR.rtaddr;
1176		getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf,
1177		    sizeof(host_buf), NULL, 0,
1178		    (nflag ? NI_NUMERICHOST : 0));
1179
1180		printf("%s if=%s", host_buf,
1181		    if_indextoname(DR.if_index, ifix_buf));
1182		printf(", flags=%s%s",
1183		    DR.flags & ND_RA_FLAG_MANAGED ? "M" : "",
1184		    DR.flags & ND_RA_FLAG_OTHER   ? "O" : "");
1185		gettimeofday(&time, 0);
1186		if (DR.expire == 0)
1187			printf(", expire=Never\n");
1188		else
1189			printf(", expire=%s\n",
1190			    sec2str(DR.expire - time.tv_sec));
1191	}
1192#undef DR
1193	close(s);
1194#endif
1195}
1196
1197void
1198plist()
1199{
1200#ifdef ICMPV6CTL_ND6_PRLIST
1201	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST };
1202	char *buf;
1203	struct in6_prefix *p, *ep, *n;
1204	struct sockaddr_in6 *advrtr;
1205	size_t l;
1206	struct timeval time;
1207	const int niflags = NI_NUMERICHOST;
1208	int ninflags = nflag ? NI_NUMERICHOST : 0;
1209	char namebuf[NI_MAXHOST];
1210
1211	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1212		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1213		/*NOTREACHED*/
1214	}
1215	buf = malloc(l);
1216	if (!buf) {
1217		err(1, "malloc");
1218		/*NOTREACHED*/
1219	}
1220	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1221		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1222		/*NOTREACHED*/
1223	}
1224
1225	ep = (struct in6_prefix *)(buf + l);
1226	for (p = (struct in6_prefix *)buf; p < ep; p = n) {
1227		advrtr = (struct sockaddr_in6 *)(p + 1);
1228		n = (struct in6_prefix *)&advrtr[p->advrtrs];
1229
1230		if (getnameinfo((struct sockaddr *)&p->prefix,
1231		    p->prefix.sin6_len, namebuf, sizeof(namebuf),
1232		    NULL, 0, niflags) != 0)
1233			strlcpy(namebuf, "?", sizeof(namebuf));
1234		printf("%s/%d if=%s\n", namebuf, p->prefixlen,
1235		    if_indextoname(p->if_index, ifix_buf));
1236
1237		gettimeofday(&time, 0);
1238		/*
1239		 * meaning of fields, especially flags, is very different
1240		 * by origin.  notify the difference to the users.
1241		 */
1242		printf("flags=%s%s%s%s%s",
1243		    p->raflags.onlink ? "L" : "",
1244		    p->raflags.autonomous ? "A" : "",
1245		    (p->flags & NDPRF_ONLINK) != 0 ? "O" : "",
1246		    (p->flags & NDPRF_DETACHED) != 0 ? "D" : "",
1247#ifdef NDPRF_HOME
1248		    (p->flags & NDPRF_HOME) != 0 ? "H" : ""
1249#else
1250		    ""
1251#endif
1252		    );
1253		if (p->vltime == ND6_INFINITE_LIFETIME)
1254			printf(" vltime=infinity");
1255		else
1256			printf(" vltime=%lu", (unsigned long)p->vltime);
1257		if (p->pltime == ND6_INFINITE_LIFETIME)
1258			printf(", pltime=infinity");
1259		else
1260			printf(", pltime=%lu", (unsigned long)p->pltime);
1261		if (p->expire == 0)
1262			printf(", expire=Never");
1263		else if (p->expire >= time.tv_sec)
1264			printf(", expire=%s",
1265			    sec2str(p->expire - time.tv_sec));
1266		else
1267			printf(", expired");
1268		printf(", ref=%d", p->refcnt);
1269		printf("\n");
1270		/*
1271		 * "advertising router" list is meaningful only if the prefix
1272		 * information is from RA.
1273		 */
1274		if (p->advrtrs) {
1275			int j;
1276			struct sockaddr_in6 *sin6;
1277
1278			sin6 = advrtr;
1279			printf("  advertised by\n");
1280			for (j = 0; j < p->advrtrs; j++) {
1281				struct in6_nbrinfo *nbi;
1282
1283				if (getnameinfo((struct sockaddr *)sin6,
1284				    sin6->sin6_len, namebuf, sizeof(namebuf),
1285				    NULL, 0, ninflags) != 0)
1286					strlcpy(namebuf, "?", sizeof(namebuf));
1287				printf("    %s", namebuf);
1288
1289				nbi = getnbrinfo(&sin6->sin6_addr,
1290				    p->if_index, 0);
1291				if (nbi) {
1292					switch (nbi->state) {
1293					case ND6_LLINFO_REACHABLE:
1294					case ND6_LLINFO_STALE:
1295					case ND6_LLINFO_DELAY:
1296					case ND6_LLINFO_PROBE:
1297						printf(" (reachable)\n");
1298						break;
1299					default:
1300						printf(" (unreachable)\n");
1301					}
1302				} else
1303					printf(" (no neighbor state)\n");
1304				sin6++;
1305			}
1306		} else
1307			printf("  No advertising router\n");
1308	}
1309	free(buf);
1310#else
1311	struct in6_prlist pr;
1312	int s, i;
1313	struct timeval time;
1314
1315	gettimeofday(&time, 0);
1316
1317	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1318		err(1, "socket");
1319		/* NOTREACHED */
1320	}
1321	bzero(&pr, sizeof(pr));
1322	strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */
1323	if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
1324		err(1, "ioctl(SIOCGPRLST_IN6)");
1325		/* NOTREACHED */
1326	}
1327#define PR pr.prefix[i]
1328	for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
1329		struct sockaddr_in6 p6;
1330		char namebuf[NI_MAXHOST];
1331		int niflags;
1332
1333#ifdef NDPRF_ONLINK
1334		p6 = PR.prefix;
1335#else
1336		memset(&p6, 0, sizeof(p6));
1337		p6.sin6_family = AF_INET6;
1338		p6.sin6_len = sizeof(p6);
1339		p6.sin6_addr = PR.prefix;
1340#endif
1341
1342		/*
1343		 * copy link index to sin6_scope_id field.
1344		 * XXX: KAME specific.
1345		 */
1346		if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) {
1347			u_int16_t linkid;
1348
1349			memcpy(&linkid, &p6.sin6_addr.s6_addr[2],
1350			    sizeof(linkid));
1351			linkid = ntohs(linkid);
1352			p6.sin6_scope_id = linkid;
1353			p6.sin6_addr.s6_addr[2] = 0;
1354			p6.sin6_addr.s6_addr[3] = 0;
1355		}
1356
1357		niflags = NI_NUMERICHOST;
1358		if (getnameinfo((struct sockaddr *)&p6,
1359		    sizeof(p6), namebuf, sizeof(namebuf),
1360		    NULL, 0, niflags)) {
1361			warnx("getnameinfo failed");
1362			continue;
1363		}
1364		printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
1365		    if_indextoname(PR.if_index, ifix_buf));
1366
1367		gettimeofday(&time, 0);
1368		/*
1369		 * meaning of fields, especially flags, is very different
1370		 * by origin.  notify the difference to the users.
1371		 */
1372#if 0
1373		printf("  %s",
1374		    PR.origin == PR_ORIG_RA ? "" : "advertise: ");
1375#endif
1376#ifdef NDPRF_ONLINK
1377		printf("flags=%s%s%s%s%s",
1378		    PR.raflags.onlink ? "L" : "",
1379		    PR.raflags.autonomous ? "A" : "",
1380		    (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "",
1381		    (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "",
1382#ifdef NDPRF_HOME
1383		    (PR.flags & NDPRF_HOME) != 0 ? "H" : ""
1384#else
1385		    ""
1386#endif
1387		    );
1388#else
1389		printf("flags=%s%s",
1390		    PR.raflags.onlink ? "L" : "",
1391		    PR.raflags.autonomous ? "A" : "");
1392#endif
1393		if (PR.vltime == ND6_INFINITE_LIFETIME)
1394			printf(" vltime=infinity");
1395		else
1396			printf(" vltime=%lu", PR.vltime);
1397		if (PR.pltime == ND6_INFINITE_LIFETIME)
1398			printf(", pltime=infinity");
1399		else
1400			printf(", pltime=%lu", PR.pltime);
1401		if (PR.expire == 0)
1402			printf(", expire=Never");
1403		else if (PR.expire >= time.tv_sec)
1404			printf(", expire=%s",
1405			    sec2str(PR.expire - time.tv_sec));
1406		else
1407			printf(", expired");
1408#ifdef NDPRF_ONLINK
1409		printf(", ref=%d", PR.refcnt);
1410#endif
1411#if 0
1412		switch (PR.origin) {
1413		case PR_ORIG_RA:
1414			printf(", origin=RA");
1415			break;
1416		case PR_ORIG_RR:
1417			printf(", origin=RR");
1418			break;
1419		case PR_ORIG_STATIC:
1420			printf(", origin=static");
1421			break;
1422		case PR_ORIG_KERNEL:
1423			printf(", origin=kernel");
1424			break;
1425		default:
1426			printf(", origin=?");
1427			break;
1428		}
1429#endif
1430		printf("\n");
1431		/*
1432		 * "advertising router" list is meaningful only if the prefix
1433		 * information is from RA.
1434		 */
1435		if (0 &&	/* prefix origin is almost obsolted */
1436		    PR.origin != PR_ORIG_RA)
1437			;
1438		else if (PR.advrtrs) {
1439			int j;
1440			printf("  advertised by\n");
1441			for (j = 0; j < PR.advrtrs; j++) {
1442				struct sockaddr_in6 sin6;
1443				struct in6_nbrinfo *nbi;
1444
1445				bzero(&sin6, sizeof(sin6));
1446				sin6.sin6_family = AF_INET6;
1447				sin6.sin6_len = sizeof(sin6);
1448				sin6.sin6_addr = PR.advrtr[j];
1449				sin6.sin6_scope_id = PR.if_index; /* XXX */
1450				getnameinfo((struct sockaddr *)&sin6,
1451				    sin6.sin6_len, host_buf,
1452				    sizeof(host_buf), NULL, 0,
1453				    (nflag ? NI_NUMERICHOST : 0));
1454				printf("    %s", host_buf);
1455
1456				nbi = getnbrinfo(&sin6.sin6_addr,
1457				    PR.if_index, 0);
1458				if (nbi) {
1459					switch (nbi->state) {
1460					case ND6_LLINFO_REACHABLE:
1461					case ND6_LLINFO_STALE:
1462					case ND6_LLINFO_DELAY:
1463					case ND6_LLINFO_PROBE:
1464						 printf(" (reachable)\n");
1465						 break;
1466					default:
1467						 printf(" (unreachable)\n");
1468					}
1469				} else
1470					printf(" (no neighbor state)\n");
1471			}
1472			if (PR.advrtrs > DRLSTSIZ)
1473				printf("    and %d routers\n",
1474				    PR.advrtrs - DRLSTSIZ);
1475		} else
1476			printf("  No advertising router\n");
1477	}
1478#undef PR
1479	close(s);
1480#endif
1481}
1482
1483void
1484pfx_flush()
1485{
1486	char dummyif[IFNAMSIZ+8];
1487	int s;
1488
1489	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1490		err(1, "socket");
1491	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1492	if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
1493		err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
1494}
1495
1496void
1497rtr_flush()
1498{
1499	char dummyif[IFNAMSIZ+8];
1500	int s;
1501
1502	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1503		err(1, "socket");
1504	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1505	if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
1506		err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
1507
1508	close(s);
1509}
1510
1511void
1512harmonize_rtr()
1513{
1514	char dummyif[IFNAMSIZ+8];
1515	int s;
1516
1517	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1518		err(1, "socket");
1519	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1520	if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
1521		err(1, "ioctl(SIOCSNDFLUSH_IN6)");
1522
1523	close(s);
1524}
1525
1526#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
1527static void
1528setdefif(ifname)
1529	char *ifname;
1530{
1531	struct in6_ndifreq ndifreq;
1532	unsigned int ifindex;
1533
1534	if (strcasecmp(ifname, "delete") == 0)
1535		ifindex = 0;
1536	else {
1537		if ((ifindex = if_nametoindex(ifname)) == 0)
1538			err(1, "failed to resolve i/f index for %s", ifname);
1539	}
1540
1541	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1542		err(1, "socket");
1543
1544	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1545	ndifreq.ifindex = ifindex;
1546
1547	if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1548		err(1, "ioctl(SIOCSDEFIFACE_IN6)");
1549
1550	close(s);
1551}
1552
1553static void
1554getdefif()
1555{
1556	struct in6_ndifreq ndifreq;
1557	char ifname[IFNAMSIZ+8];
1558
1559	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1560		err(1, "socket");
1561
1562	memset(&ndifreq, 0, sizeof(ndifreq));
1563	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1564
1565	if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1566		err(1, "ioctl(SIOCGDEFIFACE_IN6)");
1567
1568	if (ndifreq.ifindex == 0)
1569		printf("No default interface.\n");
1570	else {
1571		if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL)
1572			err(1, "failed to resolve ifname for index %lu",
1573			    ndifreq.ifindex);
1574		printf("ND default interface = %s\n", ifname);
1575	}
1576
1577	close(s);
1578}
1579#endif
1580
1581static char *
1582sec2str(total)
1583	time_t total;
1584{
1585	static char result[256];
1586	int days, hours, mins, secs;
1587	int first = 1;
1588	char *p = result;
1589	char *ep = &result[sizeof(result)];
1590	int n;
1591
1592	days = total / 3600 / 24;
1593	hours = (total / 3600) % 24;
1594	mins = (total / 60) % 60;
1595	secs = total % 60;
1596
1597	if (days) {
1598		first = 0;
1599		n = snprintf(p, ep - p, "%dd", days);
1600		if (n < 0 || n >= ep - p)
1601			return "?";
1602		p += n;
1603	}
1604	if (!first || hours) {
1605		first = 0;
1606		n = snprintf(p, ep - p, "%dh", hours);
1607		if (n < 0 || n >= ep - p)
1608			return "?";
1609		p += n;
1610	}
1611	if (!first || mins) {
1612		first = 0;
1613		n = snprintf(p, ep - p, "%dm", mins);
1614		if (n < 0 || n >= ep - p)
1615			return "?";
1616		p += n;
1617	}
1618	snprintf(p, ep - p, "%ds", secs);
1619
1620	return(result);
1621}
1622
1623/*
1624 * Print the timestamp
1625 * from tcpdump/util.c
1626 */
1627static void
1628ts_print(tvp)
1629	const struct timeval *tvp;
1630{
1631	int s;
1632
1633	/* Default */
1634	s = (tvp->tv_sec + thiszone) % 86400;
1635	(void)printf("%02d:%02d:%02d.%06u ",
1636	    s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec);
1637}
1638
1639#undef NEXTADDR
1640