ndp.c revision 186500 
1/*	$FreeBSD: head/usr.sbin/ndp/ndp.c 186500 2008-12-26 19:45:24Z qingli $	*/
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 += sizeof(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_PREFER_SOURCE
1008		SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE);
1009#endif
1010		SETVALUE("basereachable", ND.basereachable);
1011		SETVALUE("retrans", ND.retrans);
1012		SETVALUE("curhlim", ND.chlim);
1013
1014		ND.flags = newflags;
1015		if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) {
1016			err(1, "ioctl(SIOCSIFINFO_IN6)");
1017			/* NOTREACHED */
1018		}
1019#undef SETFLAG
1020#undef SETVALUE
1021	}
1022
1023	if (!ND.initialized) {
1024		errx(1, "%s: not initialized yet", ifname);
1025		/* NOTREACHED */
1026	}
1027
1028	if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
1029		err(1, "ioctl(SIOCGIFINFO_IN6)");
1030		/* NOTREACHED */
1031	}
1032	printf("linkmtu=%d", ND.linkmtu);
1033	printf(", maxmtu=%d", ND.maxmtu);
1034	printf(", curhlim=%d", ND.chlim);
1035	printf(", basereachable=%ds%dms",
1036	    ND.basereachable / 1000, ND.basereachable % 1000);
1037	printf(", reachable=%ds", ND.reachable);
1038	printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
1039#ifdef IPV6CTL_USETEMPADDR
1040	memset(nullbuf, 0, sizeof(nullbuf));
1041	if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) {
1042		int j;
1043		u_int8_t *rbuf;
1044
1045		for (i = 0; i < 3; i++) {
1046			switch (i) {
1047			case 0:
1048				printf("\nRandom seed(0): ");
1049				rbuf = ND.randomseed0;
1050				break;
1051			case 1:
1052				printf("\nRandom seed(1): ");
1053				rbuf = ND.randomseed1;
1054				break;
1055			case 2:
1056				printf("\nRandom ID:      ");
1057				rbuf = ND.randomid;
1058				break;
1059			default:
1060				errx(1, "impossible case for tempaddr display");
1061			}
1062			for (j = 0; j < 8; j++)
1063				printf("%02x", rbuf[j]);
1064		}
1065	}
1066#endif
1067	if (ND.flags) {
1068		printf("\nFlags: ");
1069#ifdef ND6_IFF_IFDISABLED
1070		if ((ND.flags & ND6_IFF_IFDISABLED))
1071			printf("disabled ");
1072#endif
1073		if ((ND.flags & ND6_IFF_PERFORMNUD))
1074			printf("nud ");
1075#ifdef ND6_IFF_ACCEPT_RTADV
1076		if ((ND.flags & ND6_IFF_ACCEPT_RTADV))
1077			printf("accept_rtadv ");
1078#endif
1079#ifdef ND6_IFF_PREFER_SOURCE
1080		if ((ND.flags & ND6_IFF_PREFER_SOURCE))
1081			printf("prefer_source ");
1082#endif
1083	}
1084	putc('\n', stdout);
1085#undef ND
1086
1087	close(s);
1088}
1089
1090#ifndef ND_RA_FLAG_RTPREF_MASK	/* XXX: just for compilation on *BSD release */
1091#define ND_RA_FLAG_RTPREF_MASK	0x18 /* 00011000 */
1092#endif
1093
1094void
1095rtrlist()
1096{
1097#ifdef ICMPV6CTL_ND6_DRLIST
1098	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST };
1099	char *buf;
1100	struct in6_defrouter *p, *ep;
1101	size_t l;
1102	struct timeval time;
1103
1104	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1105		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1106		/*NOTREACHED*/
1107	}
1108	if (l == 0)
1109		return;
1110	buf = malloc(l);
1111	if (!buf) {
1112		err(1, "malloc");
1113		/*NOTREACHED*/
1114	}
1115	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1116		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1117		/*NOTREACHED*/
1118	}
1119
1120	ep = (struct in6_defrouter *)(buf + l);
1121	for (p = (struct in6_defrouter *)buf; p < ep; p++) {
1122		int rtpref;
1123
1124		if (getnameinfo((struct sockaddr *)&p->rtaddr,
1125		    p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0,
1126		    (nflag ? NI_NUMERICHOST : 0)) != 0)
1127			strlcpy(host_buf, "?", sizeof(host_buf));
1128
1129		printf("%s if=%s", host_buf,
1130		    if_indextoname(p->if_index, ifix_buf));
1131		printf(", flags=%s%s",
1132		    p->flags & ND_RA_FLAG_MANAGED ? "M" : "",
1133		    p->flags & ND_RA_FLAG_OTHER   ? "O" : "");
1134		rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff;
1135		printf(", pref=%s", rtpref_str[rtpref]);
1136
1137		gettimeofday(&time, 0);
1138		if (p->expire == 0)
1139			printf(", expire=Never\n");
1140		else
1141			printf(", expire=%s\n",
1142			    sec2str(p->expire - time.tv_sec));
1143	}
1144	free(buf);
1145#else
1146	struct in6_drlist dr;
1147	int s, i;
1148	struct timeval time;
1149
1150	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1151		err(1, "socket");
1152		/* NOTREACHED */
1153	}
1154	bzero(&dr, sizeof(dr));
1155	strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */
1156	if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
1157		err(1, "ioctl(SIOCGDRLST_IN6)");
1158		/* NOTREACHED */
1159	}
1160#define DR dr.defrouter[i]
1161	for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) {
1162		struct sockaddr_in6 sin6;
1163
1164		bzero(&sin6, sizeof(sin6));
1165		sin6.sin6_family = AF_INET6;
1166		sin6.sin6_len = sizeof(sin6);
1167		sin6.sin6_addr = DR.rtaddr;
1168		getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf,
1169		    sizeof(host_buf), NULL, 0,
1170		    (nflag ? NI_NUMERICHOST : 0));
1171
1172		printf("%s if=%s", host_buf,
1173		    if_indextoname(DR.if_index, ifix_buf));
1174		printf(", flags=%s%s",
1175		    DR.flags & ND_RA_FLAG_MANAGED ? "M" : "",
1176		    DR.flags & ND_RA_FLAG_OTHER   ? "O" : "");
1177		gettimeofday(&time, 0);
1178		if (DR.expire == 0)
1179			printf(", expire=Never\n");
1180		else
1181			printf(", expire=%s\n",
1182			    sec2str(DR.expire - time.tv_sec));
1183	}
1184#undef DR
1185	close(s);
1186#endif
1187}
1188
1189void
1190plist()
1191{
1192#ifdef ICMPV6CTL_ND6_PRLIST
1193	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST };
1194	char *buf;
1195	struct in6_prefix *p, *ep, *n;
1196	struct sockaddr_in6 *advrtr;
1197	size_t l;
1198	struct timeval time;
1199	const int niflags = NI_NUMERICHOST;
1200	int ninflags = nflag ? NI_NUMERICHOST : 0;
1201	char namebuf[NI_MAXHOST];
1202
1203	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1204		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1205		/*NOTREACHED*/
1206	}
1207	buf = malloc(l);
1208	if (!buf) {
1209		err(1, "malloc");
1210		/*NOTREACHED*/
1211	}
1212	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1213		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1214		/*NOTREACHED*/
1215	}
1216
1217	ep = (struct in6_prefix *)(buf + l);
1218	for (p = (struct in6_prefix *)buf; p < ep; p = n) {
1219		advrtr = (struct sockaddr_in6 *)(p + 1);
1220		n = (struct in6_prefix *)&advrtr[p->advrtrs];
1221
1222		if (getnameinfo((struct sockaddr *)&p->prefix,
1223		    p->prefix.sin6_len, namebuf, sizeof(namebuf),
1224		    NULL, 0, niflags) != 0)
1225			strlcpy(namebuf, "?", sizeof(namebuf));
1226		printf("%s/%d if=%s\n", namebuf, p->prefixlen,
1227		    if_indextoname(p->if_index, ifix_buf));
1228
1229		gettimeofday(&time, 0);
1230		/*
1231		 * meaning of fields, especially flags, is very different
1232		 * by origin.  notify the difference to the users.
1233		 */
1234		printf("flags=%s%s%s%s%s",
1235		    p->raflags.onlink ? "L" : "",
1236		    p->raflags.autonomous ? "A" : "",
1237		    (p->flags & NDPRF_ONLINK) != 0 ? "O" : "",
1238		    (p->flags & NDPRF_DETACHED) != 0 ? "D" : "",
1239#ifdef NDPRF_HOME
1240		    (p->flags & NDPRF_HOME) != 0 ? "H" : ""
1241#else
1242		    ""
1243#endif
1244		    );
1245		if (p->vltime == ND6_INFINITE_LIFETIME)
1246			printf(" vltime=infinity");
1247		else
1248			printf(" vltime=%lu", (unsigned long)p->vltime);
1249		if (p->pltime == ND6_INFINITE_LIFETIME)
1250			printf(", pltime=infinity");
1251		else
1252			printf(", pltime=%lu", (unsigned long)p->pltime);
1253		if (p->expire == 0)
1254			printf(", expire=Never");
1255		else if (p->expire >= time.tv_sec)
1256			printf(", expire=%s",
1257			    sec2str(p->expire - time.tv_sec));
1258		else
1259			printf(", expired");
1260		printf(", ref=%d", p->refcnt);
1261		printf("\n");
1262		/*
1263		 * "advertising router" list is meaningful only if the prefix
1264		 * information is from RA.
1265		 */
1266		if (p->advrtrs) {
1267			int j;
1268			struct sockaddr_in6 *sin6;
1269
1270			sin6 = advrtr;
1271			printf("  advertised by\n");
1272			for (j = 0; j < p->advrtrs; j++) {
1273				struct in6_nbrinfo *nbi;
1274
1275				if (getnameinfo((struct sockaddr *)sin6,
1276				    sin6->sin6_len, namebuf, sizeof(namebuf),
1277				    NULL, 0, ninflags) != 0)
1278					strlcpy(namebuf, "?", sizeof(namebuf));
1279				printf("    %s", namebuf);
1280
1281				nbi = getnbrinfo(&sin6->sin6_addr,
1282				    p->if_index, 0);
1283				if (nbi) {
1284					switch (nbi->state) {
1285					case ND6_LLINFO_REACHABLE:
1286					case ND6_LLINFO_STALE:
1287					case ND6_LLINFO_DELAY:
1288					case ND6_LLINFO_PROBE:
1289						printf(" (reachable)\n");
1290						break;
1291					default:
1292						printf(" (unreachable)\n");
1293					}
1294				} else
1295					printf(" (no neighbor state)\n");
1296				sin6++;
1297			}
1298		} else
1299			printf("  No advertising router\n");
1300	}
1301	free(buf);
1302#else
1303	struct in6_prlist pr;
1304	int s, i;
1305	struct timeval time;
1306
1307	gettimeofday(&time, 0);
1308
1309	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1310		err(1, "socket");
1311		/* NOTREACHED */
1312	}
1313	bzero(&pr, sizeof(pr));
1314	strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */
1315	if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
1316		err(1, "ioctl(SIOCGPRLST_IN6)");
1317		/* NOTREACHED */
1318	}
1319#define PR pr.prefix[i]
1320	for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
1321		struct sockaddr_in6 p6;
1322		char namebuf[NI_MAXHOST];
1323		int niflags;
1324
1325#ifdef NDPRF_ONLINK
1326		p6 = PR.prefix;
1327#else
1328		memset(&p6, 0, sizeof(p6));
1329		p6.sin6_family = AF_INET6;
1330		p6.sin6_len = sizeof(p6);
1331		p6.sin6_addr = PR.prefix;
1332#endif
1333
1334		/*
1335		 * copy link index to sin6_scope_id field.
1336		 * XXX: KAME specific.
1337		 */
1338		if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) {
1339			u_int16_t linkid;
1340
1341			memcpy(&linkid, &p6.sin6_addr.s6_addr[2],
1342			    sizeof(linkid));
1343			linkid = ntohs(linkid);
1344			p6.sin6_scope_id = linkid;
1345			p6.sin6_addr.s6_addr[2] = 0;
1346			p6.sin6_addr.s6_addr[3] = 0;
1347		}
1348
1349		niflags = NI_NUMERICHOST;
1350		if (getnameinfo((struct sockaddr *)&p6,
1351		    sizeof(p6), namebuf, sizeof(namebuf),
1352		    NULL, 0, niflags)) {
1353			warnx("getnameinfo failed");
1354			continue;
1355		}
1356		printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
1357		    if_indextoname(PR.if_index, ifix_buf));
1358
1359		gettimeofday(&time, 0);
1360		/*
1361		 * meaning of fields, especially flags, is very different
1362		 * by origin.  notify the difference to the users.
1363		 */
1364#if 0
1365		printf("  %s",
1366		    PR.origin == PR_ORIG_RA ? "" : "advertise: ");
1367#endif
1368#ifdef NDPRF_ONLINK
1369		printf("flags=%s%s%s%s%s",
1370		    PR.raflags.onlink ? "L" : "",
1371		    PR.raflags.autonomous ? "A" : "",
1372		    (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "",
1373		    (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "",
1374#ifdef NDPRF_HOME
1375		    (PR.flags & NDPRF_HOME) != 0 ? "H" : ""
1376#else
1377		    ""
1378#endif
1379		    );
1380#else
1381		printf("flags=%s%s",
1382		    PR.raflags.onlink ? "L" : "",
1383		    PR.raflags.autonomous ? "A" : "");
1384#endif
1385		if (PR.vltime == ND6_INFINITE_LIFETIME)
1386			printf(" vltime=infinity");
1387		else
1388			printf(" vltime=%lu", PR.vltime);
1389		if (PR.pltime == ND6_INFINITE_LIFETIME)
1390			printf(", pltime=infinity");
1391		else
1392			printf(", pltime=%lu", PR.pltime);
1393		if (PR.expire == 0)
1394			printf(", expire=Never");
1395		else if (PR.expire >= time.tv_sec)
1396			printf(", expire=%s",
1397			    sec2str(PR.expire - time.tv_sec));
1398		else
1399			printf(", expired");
1400#ifdef NDPRF_ONLINK
1401		printf(", ref=%d", PR.refcnt);
1402#endif
1403#if 0
1404		switch (PR.origin) {
1405		case PR_ORIG_RA:
1406			printf(", origin=RA");
1407			break;
1408		case PR_ORIG_RR:
1409			printf(", origin=RR");
1410			break;
1411		case PR_ORIG_STATIC:
1412			printf(", origin=static");
1413			break;
1414		case PR_ORIG_KERNEL:
1415			printf(", origin=kernel");
1416			break;
1417		default:
1418			printf(", origin=?");
1419			break;
1420		}
1421#endif
1422		printf("\n");
1423		/*
1424		 * "advertising router" list is meaningful only if the prefix
1425		 * information is from RA.
1426		 */
1427		if (0 &&	/* prefix origin is almost obsolted */
1428		    PR.origin != PR_ORIG_RA)
1429			;
1430		else if (PR.advrtrs) {
1431			int j;
1432			printf("  advertised by\n");
1433			for (j = 0; j < PR.advrtrs; j++) {
1434				struct sockaddr_in6 sin6;
1435				struct in6_nbrinfo *nbi;
1436
1437				bzero(&sin6, sizeof(sin6));
1438				sin6.sin6_family = AF_INET6;
1439				sin6.sin6_len = sizeof(sin6);
1440				sin6.sin6_addr = PR.advrtr[j];
1441				sin6.sin6_scope_id = PR.if_index; /* XXX */
1442				getnameinfo((struct sockaddr *)&sin6,
1443				    sin6.sin6_len, host_buf,
1444				    sizeof(host_buf), NULL, 0,
1445				    (nflag ? NI_NUMERICHOST : 0));
1446				printf("    %s", host_buf);
1447
1448				nbi = getnbrinfo(&sin6.sin6_addr,
1449				    PR.if_index, 0);
1450				if (nbi) {
1451					switch (nbi->state) {
1452					case ND6_LLINFO_REACHABLE:
1453					case ND6_LLINFO_STALE:
1454					case ND6_LLINFO_DELAY:
1455					case ND6_LLINFO_PROBE:
1456						 printf(" (reachable)\n");
1457						 break;
1458					default:
1459						 printf(" (unreachable)\n");
1460					}
1461				} else
1462					printf(" (no neighbor state)\n");
1463			}
1464			if (PR.advrtrs > DRLSTSIZ)
1465				printf("    and %d routers\n",
1466				    PR.advrtrs - DRLSTSIZ);
1467		} else
1468			printf("  No advertising router\n");
1469	}
1470#undef PR
1471	close(s);
1472#endif
1473}
1474
1475void
1476pfx_flush()
1477{
1478	char dummyif[IFNAMSIZ+8];
1479	int s;
1480
1481	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1482		err(1, "socket");
1483	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1484	if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
1485		err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
1486}
1487
1488void
1489rtr_flush()
1490{
1491	char dummyif[IFNAMSIZ+8];
1492	int s;
1493
1494	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1495		err(1, "socket");
1496	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1497	if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
1498		err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
1499
1500	close(s);
1501}
1502
1503void
1504harmonize_rtr()
1505{
1506	char dummyif[IFNAMSIZ+8];
1507	int s;
1508
1509	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1510		err(1, "socket");
1511	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1512	if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
1513		err(1, "ioctl(SIOCSNDFLUSH_IN6)");
1514
1515	close(s);
1516}
1517
1518#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
1519static void
1520setdefif(ifname)
1521	char *ifname;
1522{
1523	struct in6_ndifreq ndifreq;
1524	unsigned int ifindex;
1525
1526	if (strcasecmp(ifname, "delete") == 0)
1527		ifindex = 0;
1528	else {
1529		if ((ifindex = if_nametoindex(ifname)) == 0)
1530			err(1, "failed to resolve i/f index for %s", ifname);
1531	}
1532
1533	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1534		err(1, "socket");
1535
1536	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1537	ndifreq.ifindex = ifindex;
1538
1539	if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1540		err(1, "ioctl(SIOCSDEFIFACE_IN6)");
1541
1542	close(s);
1543}
1544
1545static void
1546getdefif()
1547{
1548	struct in6_ndifreq ndifreq;
1549	char ifname[IFNAMSIZ+8];
1550
1551	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1552		err(1, "socket");
1553
1554	memset(&ndifreq, 0, sizeof(ndifreq));
1555	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1556
1557	if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1558		err(1, "ioctl(SIOCGDEFIFACE_IN6)");
1559
1560	if (ndifreq.ifindex == 0)
1561		printf("No default interface.\n");
1562	else {
1563		if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL)
1564			err(1, "failed to resolve ifname for index %lu",
1565			    ndifreq.ifindex);
1566		printf("ND default interface = %s\n", ifname);
1567	}
1568
1569	close(s);
1570}
1571#endif
1572
1573static char *
1574sec2str(total)
1575	time_t total;
1576{
1577	static char result[256];
1578	int days, hours, mins, secs;
1579	int first = 1;
1580	char *p = result;
1581	char *ep = &result[sizeof(result)];
1582	int n;
1583
1584	days = total / 3600 / 24;
1585	hours = (total / 3600) % 24;
1586	mins = (total / 60) % 60;
1587	secs = total % 60;
1588
1589	if (days) {
1590		first = 0;
1591		n = snprintf(p, ep - p, "%dd", days);
1592		if (n < 0 || n >= ep - p)
1593			return "?";
1594		p += n;
1595	}
1596	if (!first || hours) {
1597		first = 0;
1598		n = snprintf(p, ep - p, "%dh", hours);
1599		if (n < 0 || n >= ep - p)
1600			return "?";
1601		p += n;
1602	}
1603	if (!first || mins) {
1604		first = 0;
1605		n = snprintf(p, ep - p, "%dm", mins);
1606		if (n < 0 || n >= ep - p)
1607			return "?";
1608		p += n;
1609	}
1610	snprintf(p, ep - p, "%ds", secs);
1611
1612	return(result);
1613}
1614
1615/*
1616 * Print the timestamp
1617 * from tcpdump/util.c
1618 */
1619static void
1620ts_print(tvp)
1621	const struct timeval *tvp;
1622{
1623	int s;
1624
1625	/* Default */
1626	s = (tvp->tv_sec + thiszone) % 86400;
1627	(void)printf("%02d:%02d:%02d.%06u ",
1628	    s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec);
1629}
1630
1631#undef NEXTADDR
1632