ndp.c revision 197138 
1/*	$FreeBSD: head/usr.sbin/ndp/ndp.c 197138 2009-09-12 22:08:20Z hrs $	*/
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				goto overwrite;
441			}
442		}
443		/*
444		 * IPv4 arp command retries with sin_other = SIN_PROXY here.
445		 */
446		fprintf(stderr, "set: cannot configure a new entry\n");
447		return 1;
448	}
449
450overwrite:
451	if (sdl->sdl_family != AF_LINK) {
452		printf("cannot intuit interface index and type for %s\n", host);
453		return (1);
454	}
455	sdl_m.sdl_type = sdl->sdl_type;
456	sdl_m.sdl_index = sdl->sdl_index;
457	return (rtmsg(RTM_ADD));
458}
459
460/*
461 * Display an individual neighbor cache entry
462 */
463void
464get(host)
465	char *host;
466{
467	struct sockaddr_in6 *sin = &sin_m;
468	struct addrinfo hints, *res;
469	int gai_error;
470
471	sin_m = blank_sin;
472	bzero(&hints, sizeof(hints));
473	hints.ai_family = AF_INET6;
474	gai_error = getaddrinfo(host, NULL, &hints, &res);
475	if (gai_error) {
476		fprintf(stderr, "ndp: %s: %s\n", host,
477		    gai_strerror(gai_error));
478		return;
479	}
480	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
481#ifdef __KAME__
482	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
483		*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
484		    htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
485	}
486#endif
487	dump(&sin->sin6_addr, 0);
488	if (found_entry == 0) {
489		getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
490		    sizeof(host_buf), NULL ,0,
491		    (nflag ? NI_NUMERICHOST : 0));
492		printf("%s (%s) -- no entry\n", host, host_buf);
493		exit(1);
494	}
495}
496
497/*
498 * Delete a neighbor cache entry
499 */
500int
501delete(host)
502	char *host;
503{
504	struct sockaddr_in6 *sin = &sin_m;
505	register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
506	register char *cp = m_rtmsg.m_space;
507	struct sockaddr_dl *sdl;
508	struct addrinfo hints, *res;
509	int gai_error;
510
511	getsocket();
512	sin_m = blank_sin;
513
514	bzero(&hints, sizeof(hints));
515	hints.ai_family = AF_INET6;
516	gai_error = getaddrinfo(host, NULL, &hints, &res);
517	if (gai_error) {
518		fprintf(stderr, "ndp: %s: %s\n", host,
519		    gai_strerror(gai_error));
520		return 1;
521	}
522	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
523#ifdef __KAME__
524	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
525		*(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
526		    htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
527	}
528#endif
529	if (rtmsg(RTM_GET) < 0) {
530		errx(1, "RTM_GET(%s) failed", host);
531		/* NOTREACHED */
532	}
533	sin = (struct sockaddr_in6 *)(rtm + 1);
534	sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
535	if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
536		if (sdl->sdl_family == AF_LINK &&
537		    !(rtm->rtm_flags & RTF_GATEWAY)) {
538			goto delete;
539		}
540		/*
541		 * IPv4 arp command retries with sin_other = SIN_PROXY here.
542		 */
543		fprintf(stderr, "delete: cannot delete non-NDP entry\n");
544		return 1;
545	}
546
547delete:
548	if (sdl->sdl_family != AF_LINK) {
549		printf("cannot locate %s\n", host);
550		return (1);
551	}
552        /*
553         * need to reinit the field because it has rt_key
554         * but we want the actual address
555         */
556	NEXTADDR(RTA_DST, sin_m);
557	rtm->rtm_flags |= RTF_LLDATA;
558	if (rtmsg(RTM_DELETE) == 0) {
559		struct sockaddr_in6 s6 = *sin; /* XXX: for safety */
560
561#ifdef __KAME__
562		if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) {
563			s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]);
564			*(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0;
565		}
566#endif
567		getnameinfo((struct sockaddr *)&s6,
568		    s6.sin6_len, host_buf,
569		    sizeof(host_buf), NULL, 0,
570		    (nflag ? NI_NUMERICHOST : 0));
571		printf("%s (%s) deleted\n", host, host_buf);
572	}
573
574	return 0;
575}
576
577#define W_ADDR	36
578#define W_LL	17
579#define W_IF	6
580
581/*
582 * Dump the entire neighbor cache
583 */
584void
585dump(addr, cflag)
586	struct in6_addr *addr;
587	int cflag;
588{
589	int mib[6];
590	size_t needed;
591	char *lim, *buf, *next;
592	struct rt_msghdr *rtm;
593	struct sockaddr_in6 *sin;
594	struct sockaddr_dl *sdl;
595	extern int h_errno;
596	struct in6_nbrinfo *nbi;
597	struct timeval time;
598	int addrwidth;
599	int llwidth;
600	int ifwidth;
601	char flgbuf[8];
602	char *ifname;
603
604	/* Print header */
605	if (!tflag && !cflag)
606		printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n",
607		    W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address",
608		    W_IF, W_IF, "Netif", "Expire", "S", "Flags");
609
610again:;
611	mib[0] = CTL_NET;
612	mib[1] = PF_ROUTE;
613	mib[2] = 0;
614	mib[3] = AF_INET6;
615	mib[4] = NET_RT_FLAGS;
616#ifdef RTF_LLINFO
617	mib[5] = RTF_LLINFO;
618#else
619	mib[5] = 0;
620#endif
621	if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
622		err(1, "sysctl(PF_ROUTE estimate)");
623	if (needed > 0) {
624		if ((buf = malloc(needed)) == NULL)
625			err(1, "malloc");
626		if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
627			err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)");
628		lim = buf + needed;
629	} else
630		buf = lim = NULL;
631
632	for (next = buf; next && next < lim; next += rtm->rtm_msglen) {
633		int isrouter = 0, prbs = 0;
634
635		rtm = (struct rt_msghdr *)next;
636		sin = (struct sockaddr_in6 *)(rtm + 1);
637		sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len));
638
639		/*
640		 * Some OSes can produce a route that has the LINK flag but
641		 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD
642		 * and BSD/OS, where xx is not the interface identifier on
643		 * lo0).  Such routes entry would annoy getnbrinfo() below,
644		 * so we skip them.
645		 * XXX: such routes should have the GATEWAY flag, not the
646		 * LINK flag.  However, there is rotten routing software
647		 * that advertises all routes that have the GATEWAY flag.
648		 * Thus, KAME kernel intentionally does not set the LINK flag.
649		 * What is to be fixed is not ndp, but such routing software
650		 * (and the kernel workaround)...
651		 */
652		if (sdl->sdl_family != AF_LINK)
653			continue;
654
655		if (!(rtm->rtm_flags & RTF_HOST))
656			continue;
657
658		if (addr) {
659			if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr))
660				continue;
661			found_entry = 1;
662		} else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr))
663			continue;
664		if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) ||
665		    IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) {
666			/* XXX: should scope id be filled in the kernel? */
667			if (sin->sin6_scope_id == 0)
668				sin->sin6_scope_id = sdl->sdl_index;
669#ifdef __KAME__
670			/* KAME specific hack; removed the embedded id */
671			*(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0;
672#endif
673		}
674		getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
675		    sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0));
676		if (cflag) {
677#ifdef RTF_WASCLONED
678			if (rtm->rtm_flags & RTF_WASCLONED)
679				delete(host_buf);
680#elif defined(RTF_CLONED)
681			if (rtm->rtm_flags & RTF_CLONED)
682				delete(host_buf);
683#else
684			delete(host_buf);
685#endif
686			continue;
687		}
688		gettimeofday(&time, 0);
689		if (tflag)
690			ts_print(&time);
691
692		addrwidth = strlen(host_buf);
693		if (addrwidth < W_ADDR)
694			addrwidth = W_ADDR;
695		llwidth = strlen(ether_str(sdl));
696		if (W_ADDR + W_LL - addrwidth > llwidth)
697			llwidth = W_ADDR + W_LL - addrwidth;
698		ifname = if_indextoname(sdl->sdl_index, ifix_buf);
699		if (!ifname)
700			ifname = "?";
701		ifwidth = strlen(ifname);
702		if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth)
703			ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth;
704
705		printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf,
706		    llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname);
707
708		/* Print neighbor discovery specific informations */
709		nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1);
710		if (nbi) {
711			if (nbi->expire > time.tv_sec) {
712				printf(" %-9.9s",
713				    sec2str(nbi->expire - time.tv_sec));
714			} else if (nbi->expire == 0)
715				printf(" %-9.9s", "permanent");
716			else
717				printf(" %-9.9s", "expired");
718
719			switch (nbi->state) {
720			case ND6_LLINFO_NOSTATE:
721				 printf(" N");
722				 break;
723#ifdef ND6_LLINFO_WAITDELETE
724			case ND6_LLINFO_WAITDELETE:
725				 printf(" W");
726				 break;
727#endif
728			case ND6_LLINFO_INCOMPLETE:
729				 printf(" I");
730				 break;
731			case ND6_LLINFO_REACHABLE:
732				 printf(" R");
733				 break;
734			case ND6_LLINFO_STALE:
735				 printf(" S");
736				 break;
737			case ND6_LLINFO_DELAY:
738				 printf(" D");
739				 break;
740			case ND6_LLINFO_PROBE:
741				 printf(" P");
742				 break;
743			default:
744				 printf(" ?");
745				 break;
746			}
747
748			isrouter = nbi->isrouter;
749			prbs = nbi->asked;
750		} else {
751			warnx("failed to get neighbor information");
752			printf("  ");
753		}
754
755		/*
756		 * other flags. R: router, P: proxy, W: ??
757		 */
758		if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
759			snprintf(flgbuf, sizeof(flgbuf), "%s%s",
760			    isrouter ? "R" : "",
761			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
762		} else {
763			sin = (struct sockaddr_in6 *)
764			    (sdl->sdl_len + (char *)sdl);
765#if 0	/* W and P are mystery even for us */
766			snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s",
767			    isrouter ? "R" : "",
768			    !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "",
769			    (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "",
770			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
771#else
772			snprintf(flgbuf, sizeof(flgbuf), "%s%s",
773			    isrouter ? "R" : "",
774			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
775#endif
776		}
777		printf(" %s", flgbuf);
778
779		if (prbs)
780			printf(" %d", prbs);
781
782		printf("\n");
783	}
784	if (buf != NULL)
785		free(buf);
786
787	if (repeat) {
788		printf("\n");
789		fflush(stdout);
790		sleep(repeat);
791		goto again;
792	}
793}
794
795static struct in6_nbrinfo *
796getnbrinfo(addr, ifindex, warning)
797	struct in6_addr *addr;
798	int ifindex;
799	int warning;
800{
801	static struct in6_nbrinfo nbi;
802	int s;
803
804	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
805		err(1, "socket");
806
807	bzero(&nbi, sizeof(nbi));
808	if_indextoname(ifindex, nbi.ifname);
809	nbi.addr = *addr;
810	if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) {
811		if (warning)
812			warn("ioctl(SIOCGNBRINFO_IN6)");
813		close(s);
814		return(NULL);
815	}
816
817	close(s);
818	return(&nbi);
819}
820
821static char *
822ether_str(sdl)
823	struct sockaddr_dl *sdl;
824{
825	static char hbuf[NI_MAXHOST];
826	u_char *cp;
827
828	if (sdl->sdl_alen) {
829		cp = (u_char *)LLADDR(sdl);
830		snprintf(hbuf, sizeof(hbuf), "%x:%x:%x:%x:%x:%x",
831		    cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]);
832	} else
833		snprintf(hbuf, sizeof(hbuf), "(incomplete)");
834
835	return(hbuf);
836}
837
838int
839ndp_ether_aton(a, n)
840	char *a;
841	u_char *n;
842{
843	int i, o[6];
844
845	i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2],
846	    &o[3], &o[4], &o[5]);
847	if (i != 6) {
848		fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a);
849		return (1);
850	}
851	for (i = 0; i < 6; i++)
852		n[i] = o[i];
853	return (0);
854}
855
856void
857usage()
858{
859	printf("usage: ndp [-nt] hostname\n");
860	printf("       ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n");
861	printf("       ndp [-nt] -A wait\n");
862	printf("       ndp [-nt] -d hostname\n");
863	printf("       ndp [-nt] -f filename\n");
864	printf("       ndp [-nt] -i interface [flags...]\n");
865#ifdef SIOCSDEFIFACE_IN6
866	printf("       ndp [-nt] -I [interface|delete]\n");
867#endif
868	printf("       ndp [-nt] -s nodename etheraddr [temp] [proxy]\n");
869	exit(1);
870}
871
872int
873rtmsg(cmd)
874	int cmd;
875{
876	static int seq;
877	int rlen;
878	register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
879	register char *cp = m_rtmsg.m_space;
880	register int l;
881
882	errno = 0;
883	if (cmd == RTM_DELETE)
884		goto doit;
885	bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
886	rtm->rtm_flags = flags;
887	rtm->rtm_version = RTM_VERSION;
888
889	switch (cmd) {
890	default:
891		fprintf(stderr, "ndp: internal wrong cmd\n");
892		exit(1);
893	case RTM_ADD:
894		rtm->rtm_addrs |= RTA_GATEWAY;
895		if (expire_time) {
896			rtm->rtm_rmx.rmx_expire = expire_time;
897			rtm->rtm_inits = RTV_EXPIRE;
898		}
899		rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA);
900#if 0 /* we don't support ipv6addr/128 type proxying */
901		if (rtm->rtm_flags & RTF_ANNOUNCE) {
902			rtm->rtm_flags &= ~RTF_HOST;
903			rtm->rtm_addrs |= RTA_NETMASK;
904		}
905#endif
906		/* FALLTHROUGH */
907	case RTM_GET:
908		rtm->rtm_addrs |= RTA_DST;
909	}
910
911	NEXTADDR(RTA_DST, sin_m);
912	NEXTADDR(RTA_GATEWAY, sdl_m);
913#if 0 /* we don't support ipv6addr/128 type proxying */
914	memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr));
915	NEXTADDR(RTA_NETMASK, so_mask);
916#endif
917
918	rtm->rtm_msglen = cp - (char *)&m_rtmsg;
919doit:
920	l = rtm->rtm_msglen;
921	rtm->rtm_seq = ++seq;
922	rtm->rtm_type = cmd;
923	if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
924		if (errno != ESRCH || cmd != RTM_DELETE) {
925			err(1, "writing to routing socket");
926			/* NOTREACHED */
927		}
928	}
929	do {
930		l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
931	} while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
932	if (l < 0)
933		(void) fprintf(stderr, "ndp: read from routing socket: %s\n",
934		    strerror(errno));
935	return (0);
936}
937
938void
939ifinfo(ifname, argc, argv)
940	char *ifname;
941	int argc;
942	char **argv;
943{
944	struct in6_ndireq nd;
945	int i, s;
946	u_int32_t newflags;
947#ifdef IPV6CTL_USETEMPADDR
948	u_int8_t nullbuf[8];
949#endif
950
951	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
952		err(1, "socket");
953		/* NOTREACHED */
954	}
955	bzero(&nd, sizeof(nd));
956	strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
957	if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
958		err(1, "ioctl(SIOCGIFINFO_IN6)");
959		/* NOTREACHED */
960	}
961#define ND nd.ndi
962	newflags = ND.flags;
963	for (i = 0; i < argc; i++) {
964		int clear = 0;
965		char *cp = argv[i];
966
967		if (*cp == '-') {
968			clear = 1;
969			cp++;
970		}
971
972#define SETFLAG(s, f) \
973	do {\
974		if (strcmp(cp, (s)) == 0) {\
975			if (clear)\
976				newflags &= ~(f);\
977			else\
978				newflags |= (f);\
979		}\
980	} while (0)
981/*
982 * XXX: this macro is not 100% correct, in that it matches "nud" against
983 *      "nudbogus".  But we just let it go since this is minor.
984 */
985#define SETVALUE(f, v) \
986	do { \
987		char *valptr; \
988		unsigned long newval; \
989		v = 0; /* unspecified */ \
990		if (strncmp(cp, f, strlen(f)) == 0) { \
991			valptr = strchr(cp, '='); \
992			if (valptr == NULL) \
993				err(1, "syntax error in %s field", (f)); \
994			errno = 0; \
995			newval = strtoul(++valptr, NULL, 0); \
996			if (errno) \
997				err(1, "syntax error in %s's value", (f)); \
998			v = newval; \
999		} \
1000	} while (0)
1001
1002		SETFLAG("disabled", ND6_IFF_IFDISABLED);
1003		SETFLAG("nud", ND6_IFF_PERFORMNUD);
1004#ifdef ND6_IFF_ACCEPT_RTADV
1005		SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV);
1006#endif
1007#ifdef ND6_IFF_AUTO_LINKLOCAL
1008		SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL);
1009#endif
1010#ifdef ND6_IFF_PREFER_SOURCE
1011		SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE);
1012#endif
1013		SETVALUE("basereachable", ND.basereachable);
1014		SETVALUE("retrans", ND.retrans);
1015		SETVALUE("curhlim", ND.chlim);
1016
1017		ND.flags = newflags;
1018		if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) {
1019			err(1, "ioctl(SIOCSIFINFO_IN6)");
1020			/* NOTREACHED */
1021		}
1022#undef SETFLAG
1023#undef SETVALUE
1024	}
1025
1026	if (!ND.initialized) {
1027		errx(1, "%s: not initialized yet", ifname);
1028		/* NOTREACHED */
1029	}
1030
1031	if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
1032		err(1, "ioctl(SIOCGIFINFO_IN6)");
1033		/* NOTREACHED */
1034	}
1035	printf("linkmtu=%d", ND.linkmtu);
1036	printf(", maxmtu=%d", ND.maxmtu);
1037	printf(", curhlim=%d", ND.chlim);
1038	printf(", basereachable=%ds%dms",
1039	    ND.basereachable / 1000, ND.basereachable % 1000);
1040	printf(", reachable=%ds", ND.reachable);
1041	printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
1042#ifdef IPV6CTL_USETEMPADDR
1043	memset(nullbuf, 0, sizeof(nullbuf));
1044	if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) {
1045		int j;
1046		u_int8_t *rbuf;
1047
1048		for (i = 0; i < 3; i++) {
1049			switch (i) {
1050			case 0:
1051				printf("\nRandom seed(0): ");
1052				rbuf = ND.randomseed0;
1053				break;
1054			case 1:
1055				printf("\nRandom seed(1): ");
1056				rbuf = ND.randomseed1;
1057				break;
1058			case 2:
1059				printf("\nRandom ID:      ");
1060				rbuf = ND.randomid;
1061				break;
1062			default:
1063				errx(1, "impossible case for tempaddr display");
1064			}
1065			for (j = 0; j < 8; j++)
1066				printf("%02x", rbuf[j]);
1067		}
1068	}
1069#endif
1070	if (ND.flags) {
1071		printf("\nFlags: ");
1072#ifdef ND6_IFF_IFDISABLED
1073		if ((ND.flags & ND6_IFF_IFDISABLED))
1074			printf("disabled ");
1075#endif
1076		if ((ND.flags & ND6_IFF_PERFORMNUD))
1077			printf("nud ");
1078#ifdef ND6_IFF_ACCEPT_RTADV
1079		if ((ND.flags & ND6_IFF_ACCEPT_RTADV))
1080			printf("accept_rtadv ");
1081#endif
1082#ifdef ND6_IFF_AUTO_LINKLOCAL
1083		if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL))
1084			printf("auto_linklocal ");
1085#endif
1086#ifdef ND6_IFF_PREFER_SOURCE
1087		if ((ND.flags & ND6_IFF_PREFER_SOURCE))
1088			printf("prefer_source ");
1089#endif
1090	}
1091	putc('\n', stdout);
1092#undef ND
1093
1094	close(s);
1095}
1096
1097#ifndef ND_RA_FLAG_RTPREF_MASK	/* XXX: just for compilation on *BSD release */
1098#define ND_RA_FLAG_RTPREF_MASK	0x18 /* 00011000 */
1099#endif
1100
1101void
1102rtrlist()
1103{
1104#ifdef ICMPV6CTL_ND6_DRLIST
1105	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST };
1106	char *buf;
1107	struct in6_defrouter *p, *ep;
1108	size_t l;
1109	struct timeval time;
1110
1111	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1112		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1113		/*NOTREACHED*/
1114	}
1115	if (l == 0)
1116		return;
1117	buf = malloc(l);
1118	if (!buf) {
1119		err(1, "malloc");
1120		/*NOTREACHED*/
1121	}
1122	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1123		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1124		/*NOTREACHED*/
1125	}
1126
1127	ep = (struct in6_defrouter *)(buf + l);
1128	for (p = (struct in6_defrouter *)buf; p < ep; p++) {
1129		int rtpref;
1130
1131		if (getnameinfo((struct sockaddr *)&p->rtaddr,
1132		    p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0,
1133		    (nflag ? NI_NUMERICHOST : 0)) != 0)
1134			strlcpy(host_buf, "?", sizeof(host_buf));
1135
1136		printf("%s if=%s", host_buf,
1137		    if_indextoname(p->if_index, ifix_buf));
1138		printf(", flags=%s%s",
1139		    p->flags & ND_RA_FLAG_MANAGED ? "M" : "",
1140		    p->flags & ND_RA_FLAG_OTHER   ? "O" : "");
1141		rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff;
1142		printf(", pref=%s", rtpref_str[rtpref]);
1143
1144		gettimeofday(&time, 0);
1145		if (p->expire == 0)
1146			printf(", expire=Never\n");
1147		else
1148			printf(", expire=%s\n",
1149			    sec2str(p->expire - time.tv_sec));
1150	}
1151	free(buf);
1152#else
1153	struct in6_drlist dr;
1154	int s, i;
1155	struct timeval time;
1156
1157	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1158		err(1, "socket");
1159		/* NOTREACHED */
1160	}
1161	bzero(&dr, sizeof(dr));
1162	strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */
1163	if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
1164		err(1, "ioctl(SIOCGDRLST_IN6)");
1165		/* NOTREACHED */
1166	}
1167#define DR dr.defrouter[i]
1168	for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) {
1169		struct sockaddr_in6 sin6;
1170
1171		bzero(&sin6, sizeof(sin6));
1172		sin6.sin6_family = AF_INET6;
1173		sin6.sin6_len = sizeof(sin6);
1174		sin6.sin6_addr = DR.rtaddr;
1175		getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf,
1176		    sizeof(host_buf), NULL, 0,
1177		    (nflag ? NI_NUMERICHOST : 0));
1178
1179		printf("%s if=%s", host_buf,
1180		    if_indextoname(DR.if_index, ifix_buf));
1181		printf(", flags=%s%s",
1182		    DR.flags & ND_RA_FLAG_MANAGED ? "M" : "",
1183		    DR.flags & ND_RA_FLAG_OTHER   ? "O" : "");
1184		gettimeofday(&time, 0);
1185		if (DR.expire == 0)
1186			printf(", expire=Never\n");
1187		else
1188			printf(", expire=%s\n",
1189			    sec2str(DR.expire - time.tv_sec));
1190	}
1191#undef DR
1192	close(s);
1193#endif
1194}
1195
1196void
1197plist()
1198{
1199#ifdef ICMPV6CTL_ND6_PRLIST
1200	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST };
1201	char *buf;
1202	struct in6_prefix *p, *ep, *n;
1203	struct sockaddr_in6 *advrtr;
1204	size_t l;
1205	struct timeval time;
1206	const int niflags = NI_NUMERICHOST;
1207	int ninflags = nflag ? NI_NUMERICHOST : 0;
1208	char namebuf[NI_MAXHOST];
1209
1210	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1211		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1212		/*NOTREACHED*/
1213	}
1214	buf = malloc(l);
1215	if (!buf) {
1216		err(1, "malloc");
1217		/*NOTREACHED*/
1218	}
1219	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1220		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1221		/*NOTREACHED*/
1222	}
1223
1224	ep = (struct in6_prefix *)(buf + l);
1225	for (p = (struct in6_prefix *)buf; p < ep; p = n) {
1226		advrtr = (struct sockaddr_in6 *)(p + 1);
1227		n = (struct in6_prefix *)&advrtr[p->advrtrs];
1228
1229		if (getnameinfo((struct sockaddr *)&p->prefix,
1230		    p->prefix.sin6_len, namebuf, sizeof(namebuf),
1231		    NULL, 0, niflags) != 0)
1232			strlcpy(namebuf, "?", sizeof(namebuf));
1233		printf("%s/%d if=%s\n", namebuf, p->prefixlen,
1234		    if_indextoname(p->if_index, ifix_buf));
1235
1236		gettimeofday(&time, 0);
1237		/*
1238		 * meaning of fields, especially flags, is very different
1239		 * by origin.  notify the difference to the users.
1240		 */
1241		printf("flags=%s%s%s%s%s",
1242		    p->raflags.onlink ? "L" : "",
1243		    p->raflags.autonomous ? "A" : "",
1244		    (p->flags & NDPRF_ONLINK) != 0 ? "O" : "",
1245		    (p->flags & NDPRF_DETACHED) != 0 ? "D" : "",
1246#ifdef NDPRF_HOME
1247		    (p->flags & NDPRF_HOME) != 0 ? "H" : ""
1248#else
1249		    ""
1250#endif
1251		    );
1252		if (p->vltime == ND6_INFINITE_LIFETIME)
1253			printf(" vltime=infinity");
1254		else
1255			printf(" vltime=%lu", (unsigned long)p->vltime);
1256		if (p->pltime == ND6_INFINITE_LIFETIME)
1257			printf(", pltime=infinity");
1258		else
1259			printf(", pltime=%lu", (unsigned long)p->pltime);
1260		if (p->expire == 0)
1261			printf(", expire=Never");
1262		else if (p->expire >= time.tv_sec)
1263			printf(", expire=%s",
1264			    sec2str(p->expire - time.tv_sec));
1265		else
1266			printf(", expired");
1267		printf(", ref=%d", p->refcnt);
1268		printf("\n");
1269		/*
1270		 * "advertising router" list is meaningful only if the prefix
1271		 * information is from RA.
1272		 */
1273		if (p->advrtrs) {
1274			int j;
1275			struct sockaddr_in6 *sin6;
1276
1277			sin6 = advrtr;
1278			printf("  advertised by\n");
1279			for (j = 0; j < p->advrtrs; j++) {
1280				struct in6_nbrinfo *nbi;
1281
1282				if (getnameinfo((struct sockaddr *)sin6,
1283				    sin6->sin6_len, namebuf, sizeof(namebuf),
1284				    NULL, 0, ninflags) != 0)
1285					strlcpy(namebuf, "?", sizeof(namebuf));
1286				printf("    %s", namebuf);
1287
1288				nbi = getnbrinfo(&sin6->sin6_addr,
1289				    p->if_index, 0);
1290				if (nbi) {
1291					switch (nbi->state) {
1292					case ND6_LLINFO_REACHABLE:
1293					case ND6_LLINFO_STALE:
1294					case ND6_LLINFO_DELAY:
1295					case ND6_LLINFO_PROBE:
1296						printf(" (reachable)\n");
1297						break;
1298					default:
1299						printf(" (unreachable)\n");
1300					}
1301				} else
1302					printf(" (no neighbor state)\n");
1303				sin6++;
1304			}
1305		} else
1306			printf("  No advertising router\n");
1307	}
1308	free(buf);
1309#else
1310	struct in6_prlist pr;
1311	int s, i;
1312	struct timeval time;
1313
1314	gettimeofday(&time, 0);
1315
1316	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1317		err(1, "socket");
1318		/* NOTREACHED */
1319	}
1320	bzero(&pr, sizeof(pr));
1321	strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */
1322	if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
1323		err(1, "ioctl(SIOCGPRLST_IN6)");
1324		/* NOTREACHED */
1325	}
1326#define PR pr.prefix[i]
1327	for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
1328		struct sockaddr_in6 p6;
1329		char namebuf[NI_MAXHOST];
1330		int niflags;
1331
1332#ifdef NDPRF_ONLINK
1333		p6 = PR.prefix;
1334#else
1335		memset(&p6, 0, sizeof(p6));
1336		p6.sin6_family = AF_INET6;
1337		p6.sin6_len = sizeof(p6);
1338		p6.sin6_addr = PR.prefix;
1339#endif
1340
1341		/*
1342		 * copy link index to sin6_scope_id field.
1343		 * XXX: KAME specific.
1344		 */
1345		if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) {
1346			u_int16_t linkid;
1347
1348			memcpy(&linkid, &p6.sin6_addr.s6_addr[2],
1349			    sizeof(linkid));
1350			linkid = ntohs(linkid);
1351			p6.sin6_scope_id = linkid;
1352			p6.sin6_addr.s6_addr[2] = 0;
1353			p6.sin6_addr.s6_addr[3] = 0;
1354		}
1355
1356		niflags = NI_NUMERICHOST;
1357		if (getnameinfo((struct sockaddr *)&p6,
1358		    sizeof(p6), namebuf, sizeof(namebuf),
1359		    NULL, 0, niflags)) {
1360			warnx("getnameinfo failed");
1361			continue;
1362		}
1363		printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
1364		    if_indextoname(PR.if_index, ifix_buf));
1365
1366		gettimeofday(&time, 0);
1367		/*
1368		 * meaning of fields, especially flags, is very different
1369		 * by origin.  notify the difference to the users.
1370		 */
1371#if 0
1372		printf("  %s",
1373		    PR.origin == PR_ORIG_RA ? "" : "advertise: ");
1374#endif
1375#ifdef NDPRF_ONLINK
1376		printf("flags=%s%s%s%s%s",
1377		    PR.raflags.onlink ? "L" : "",
1378		    PR.raflags.autonomous ? "A" : "",
1379		    (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "",
1380		    (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "",
1381#ifdef NDPRF_HOME
1382		    (PR.flags & NDPRF_HOME) != 0 ? "H" : ""
1383#else
1384		    ""
1385#endif
1386		    );
1387#else
1388		printf("flags=%s%s",
1389		    PR.raflags.onlink ? "L" : "",
1390		    PR.raflags.autonomous ? "A" : "");
1391#endif
1392		if (PR.vltime == ND6_INFINITE_LIFETIME)
1393			printf(" vltime=infinity");
1394		else
1395			printf(" vltime=%lu", PR.vltime);
1396		if (PR.pltime == ND6_INFINITE_LIFETIME)
1397			printf(", pltime=infinity");
1398		else
1399			printf(", pltime=%lu", PR.pltime);
1400		if (PR.expire == 0)
1401			printf(", expire=Never");
1402		else if (PR.expire >= time.tv_sec)
1403			printf(", expire=%s",
1404			    sec2str(PR.expire - time.tv_sec));
1405		else
1406			printf(", expired");
1407#ifdef NDPRF_ONLINK
1408		printf(", ref=%d", PR.refcnt);
1409#endif
1410#if 0
1411		switch (PR.origin) {
1412		case PR_ORIG_RA:
1413			printf(", origin=RA");
1414			break;
1415		case PR_ORIG_RR:
1416			printf(", origin=RR");
1417			break;
1418		case PR_ORIG_STATIC:
1419			printf(", origin=static");
1420			break;
1421		case PR_ORIG_KERNEL:
1422			printf(", origin=kernel");
1423			break;
1424		default:
1425			printf(", origin=?");
1426			break;
1427		}
1428#endif
1429		printf("\n");
1430		/*
1431		 * "advertising router" list is meaningful only if the prefix
1432		 * information is from RA.
1433		 */
1434		if (0 &&	/* prefix origin is almost obsolted */
1435		    PR.origin != PR_ORIG_RA)
1436			;
1437		else if (PR.advrtrs) {
1438			int j;
1439			printf("  advertised by\n");
1440			for (j = 0; j < PR.advrtrs; j++) {
1441				struct sockaddr_in6 sin6;
1442				struct in6_nbrinfo *nbi;
1443
1444				bzero(&sin6, sizeof(sin6));
1445				sin6.sin6_family = AF_INET6;
1446				sin6.sin6_len = sizeof(sin6);
1447				sin6.sin6_addr = PR.advrtr[j];
1448				sin6.sin6_scope_id = PR.if_index; /* XXX */
1449				getnameinfo((struct sockaddr *)&sin6,
1450				    sin6.sin6_len, host_buf,
1451				    sizeof(host_buf), NULL, 0,
1452				    (nflag ? NI_NUMERICHOST : 0));
1453				printf("    %s", host_buf);
1454
1455				nbi = getnbrinfo(&sin6.sin6_addr,
1456				    PR.if_index, 0);
1457				if (nbi) {
1458					switch (nbi->state) {
1459					case ND6_LLINFO_REACHABLE:
1460					case ND6_LLINFO_STALE:
1461					case ND6_LLINFO_DELAY:
1462					case ND6_LLINFO_PROBE:
1463						 printf(" (reachable)\n");
1464						 break;
1465					default:
1466						 printf(" (unreachable)\n");
1467					}
1468				} else
1469					printf(" (no neighbor state)\n");
1470			}
1471			if (PR.advrtrs > DRLSTSIZ)
1472				printf("    and %d routers\n",
1473				    PR.advrtrs - DRLSTSIZ);
1474		} else
1475			printf("  No advertising router\n");
1476	}
1477#undef PR
1478	close(s);
1479#endif
1480}
1481
1482void
1483pfx_flush()
1484{
1485	char dummyif[IFNAMSIZ+8];
1486	int s;
1487
1488	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1489		err(1, "socket");
1490	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1491	if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
1492		err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
1493}
1494
1495void
1496rtr_flush()
1497{
1498	char dummyif[IFNAMSIZ+8];
1499	int s;
1500
1501	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1502		err(1, "socket");
1503	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1504	if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
1505		err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
1506
1507	close(s);
1508}
1509
1510void
1511harmonize_rtr()
1512{
1513	char dummyif[IFNAMSIZ+8];
1514	int s;
1515
1516	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1517		err(1, "socket");
1518	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1519	if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
1520		err(1, "ioctl(SIOCSNDFLUSH_IN6)");
1521
1522	close(s);
1523}
1524
1525#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
1526static void
1527setdefif(ifname)
1528	char *ifname;
1529{
1530	struct in6_ndifreq ndifreq;
1531	unsigned int ifindex;
1532
1533	if (strcasecmp(ifname, "delete") == 0)
1534		ifindex = 0;
1535	else {
1536		if ((ifindex = if_nametoindex(ifname)) == 0)
1537			err(1, "failed to resolve i/f index for %s", ifname);
1538	}
1539
1540	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1541		err(1, "socket");
1542
1543	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1544	ndifreq.ifindex = ifindex;
1545
1546	if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1547		err(1, "ioctl(SIOCSDEFIFACE_IN6)");
1548
1549	close(s);
1550}
1551
1552static void
1553getdefif()
1554{
1555	struct in6_ndifreq ndifreq;
1556	char ifname[IFNAMSIZ+8];
1557
1558	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1559		err(1, "socket");
1560
1561	memset(&ndifreq, 0, sizeof(ndifreq));
1562	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1563
1564	if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1565		err(1, "ioctl(SIOCGDEFIFACE_IN6)");
1566
1567	if (ndifreq.ifindex == 0)
1568		printf("No default interface.\n");
1569	else {
1570		if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL)
1571			err(1, "failed to resolve ifname for index %lu",
1572			    ndifreq.ifindex);
1573		printf("ND default interface = %s\n", ifname);
1574	}
1575
1576	close(s);
1577}
1578#endif
1579
1580static char *
1581sec2str(total)
1582	time_t total;
1583{
1584	static char result[256];
1585	int days, hours, mins, secs;
1586	int first = 1;
1587	char *p = result;
1588	char *ep = &result[sizeof(result)];
1589	int n;
1590
1591	days = total / 3600 / 24;
1592	hours = (total / 3600) % 24;
1593	mins = (total / 60) % 60;
1594	secs = total % 60;
1595
1596	if (days) {
1597		first = 0;
1598		n = snprintf(p, ep - p, "%dd", days);
1599		if (n < 0 || n >= ep - p)
1600			return "?";
1601		p += n;
1602	}
1603	if (!first || hours) {
1604		first = 0;
1605		n = snprintf(p, ep - p, "%dh", hours);
1606		if (n < 0 || n >= ep - p)
1607			return "?";
1608		p += n;
1609	}
1610	if (!first || mins) {
1611		first = 0;
1612		n = snprintf(p, ep - p, "%dm", mins);
1613		if (n < 0 || n >= ep - p)
1614			return "?";
1615		p += n;
1616	}
1617	snprintf(p, ep - p, "%ds", secs);
1618
1619	return(result);
1620}
1621
1622/*
1623 * Print the timestamp
1624 * from tcpdump/util.c
1625 */
1626static void
1627ts_print(tvp)
1628	const struct timeval *tvp;
1629{
1630	int s;
1631
1632	/* Default */
1633	s = (tvp->tv_sec + thiszone) % 86400;
1634	(void)printf("%02d:%02d:%02d.%06u ",
1635	    s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec);
1636}
1637
1638#undef NEXTADDR
1639