ndp.c revision 259176 
1/*	$FreeBSD: head/usr.sbin/ndp/ndp.c 259176 2013-12-10 14:17:07Z ae $	*/
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#define NEXTADDR(w, s) \
113	if (rtm->rtm_addrs & (w)) { \
114		bcopy((char *)&s, cp, sizeof(s)); cp += SA_SIZE(&s);}
115
116
117static pid_t pid;
118static int nflag;
119static int tflag;
120static int32_t thiszone;	/* time difference with gmt */
121static int s = -1;
122static int repeat = 0;
123
124char ntop_buf[INET6_ADDRSTRLEN];	/* inet_ntop() */
125char host_buf[NI_MAXHOST];		/* getnameinfo() */
126char ifix_buf[IFNAMSIZ];		/* if_indextoname() */
127
128int main(int, char **);
129int file(char *);
130void getsocket(void);
131int set(int, char **);
132void get(char *);
133int delete(char *);
134void dump(struct sockaddr_in6 *, int);
135static struct in6_nbrinfo *getnbrinfo(struct in6_addr *, int, int);
136static char *ether_str(struct sockaddr_dl *);
137int ndp_ether_aton(char *, u_char *);
138void usage(void);
139int rtmsg(int);
140void ifinfo(char *, int, char **);
141void rtrlist(void);
142void plist(void);
143void pfx_flush(void);
144void rtr_flush(void);
145void harmonize_rtr(void);
146#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
147static void getdefif(void);
148static void setdefif(char *);
149#endif
150static char *sec2str(time_t);
151static void ts_print(const struct timeval *);
152
153#ifdef ICMPV6CTL_ND6_DRLIST
154static char *rtpref_str[] = {
155	"medium",		/* 00 */
156	"high",			/* 01 */
157	"rsv",			/* 10 */
158	"low"			/* 11 */
159};
160#endif
161
162int mode = 0;
163char *arg = NULL;
164
165int
166main(int argc, char **argv)
167{
168	int ch;
169
170	pid = getpid();
171	thiszone = gmt2local(0);
172	while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1)
173		switch (ch) {
174		case 'a':
175		case 'c':
176		case 'p':
177		case 'r':
178		case 'H':
179		case 'P':
180		case 'R':
181		case 's':
182		case 'I':
183			if (mode) {
184				usage();
185				/*NOTREACHED*/
186			}
187			mode = ch;
188			arg = NULL;
189			break;
190		case 'd':
191		case 'f':
192		case 'i' :
193			if (mode) {
194				usage();
195				/*NOTREACHED*/
196			}
197			mode = ch;
198			arg = optarg;
199			break;
200		case 'n':
201			nflag = 1;
202			break;
203		case 't':
204			tflag = 1;
205			break;
206		case 'A':
207			if (mode) {
208				usage();
209				/*NOTREACHED*/
210			}
211			mode = 'a';
212			repeat = atoi(optarg);
213			if (repeat < 0) {
214				usage();
215				/*NOTREACHED*/
216			}
217			break;
218		default:
219			usage();
220		}
221
222	argc -= optind;
223	argv += optind;
224
225	switch (mode) {
226	case 'a':
227	case 'c':
228		if (argc != 0) {
229			usage();
230			/*NOTREACHED*/
231		}
232		dump(0, mode == 'c');
233		break;
234	case 'd':
235		if (argc != 0) {
236			usage();
237			/*NOTREACHED*/
238		}
239		delete(arg);
240		break;
241	case 'I':
242#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
243		if (argc > 1) {
244			usage();
245			/*NOTREACHED*/
246		} else if (argc == 1) {
247			if (strcmp(*argv, "delete") == 0 ||
248			    if_nametoindex(*argv))
249				setdefif(*argv);
250			else
251				errx(1, "invalid interface %s", *argv);
252		}
253		getdefif(); /* always call it to print the result */
254		break;
255#else
256		errx(1, "not supported yet");
257		/*NOTREACHED*/
258#endif
259	case 'p':
260		if (argc != 0) {
261			usage();
262			/*NOTREACHED*/
263		}
264		plist();
265		break;
266	case 'i':
267		ifinfo(arg, argc, argv);
268		break;
269	case 'r':
270		if (argc != 0) {
271			usage();
272			/*NOTREACHED*/
273		}
274		rtrlist();
275		break;
276	case 's':
277		if (argc < 2 || argc > 4)
278			usage();
279		exit(set(argc, argv) ? 1 : 0);
280	case 'H':
281		if (argc != 0) {
282			usage();
283			/*NOTREACHED*/
284		}
285		harmonize_rtr();
286		break;
287	case 'P':
288		if (argc != 0) {
289			usage();
290			/*NOTREACHED*/
291		}
292		pfx_flush();
293		break;
294	case 'R':
295		if (argc != 0) {
296			usage();
297			/*NOTREACHED*/
298		}
299		rtr_flush();
300		break;
301	case 0:
302		if (argc != 1) {
303			usage();
304			/*NOTREACHED*/
305		}
306		get(argv[0]);
307		break;
308	}
309	exit(0);
310}
311
312/*
313 * Process a file to set standard ndp entries
314 */
315int
316file(char *name)
317{
318	FILE *fp;
319	int i, retval;
320	char line[100], arg[5][50], *args[5];
321
322	if ((fp = fopen(name, "r")) == NULL) {
323		fprintf(stderr, "ndp: cannot open %s\n", name);
324		exit(1);
325	}
326	args[0] = &arg[0][0];
327	args[1] = &arg[1][0];
328	args[2] = &arg[2][0];
329	args[3] = &arg[3][0];
330	args[4] = &arg[4][0];
331	retval = 0;
332	while (fgets(line, sizeof(line), fp) != NULL) {
333		i = sscanf(line, "%49s %49s %49s %49s %49s",
334		    arg[0], arg[1], arg[2], arg[3], arg[4]);
335		if (i < 2) {
336			fprintf(stderr, "ndp: bad line: %s\n", line);
337			retval = 1;
338			continue;
339		}
340		if (set(i, args))
341			retval = 1;
342	}
343	fclose(fp);
344	return (retval);
345}
346
347void
348getsocket()
349{
350	if (s < 0) {
351		s = socket(PF_ROUTE, SOCK_RAW, 0);
352		if (s < 0) {
353			err(1, "socket");
354			/* NOTREACHED */
355		}
356	}
357}
358
359struct	sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 };
360struct	sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m;
361struct	sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m;
362time_t	expire_time;
363int	flags, found_entry;
364struct	{
365	struct	rt_msghdr m_rtm;
366	char	m_space[512];
367}	m_rtmsg;
368
369/*
370 * Set an individual neighbor cache entry
371 */
372int
373set(int argc, char **argv)
374{
375	register struct sockaddr_in6 *sin = &sin_m;
376	register struct sockaddr_dl *sdl;
377	register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
378	struct addrinfo hints, *res;
379	int gai_error;
380	u_char *ea;
381	char *host = argv[0], *eaddr = argv[1];
382
383	getsocket();
384	argc -= 2;
385	argv += 2;
386	sdl_m = blank_sdl;
387	sin_m = blank_sin;
388
389	bzero(&hints, sizeof(hints));
390	hints.ai_family = AF_INET6;
391	gai_error = getaddrinfo(host, NULL, &hints, &res);
392	if (gai_error) {
393		fprintf(stderr, "ndp: %s: %s\n", host,
394			gai_strerror(gai_error));
395		return 1;
396	}
397	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
398	sin->sin6_scope_id =
399	    ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
400	ea = (u_char *)LLADDR(&sdl_m);
401	if (ndp_ether_aton(eaddr, ea) == 0)
402		sdl_m.sdl_alen = 6;
403	flags = expire_time = 0;
404	while (argc-- > 0) {
405		if (strncmp(argv[0], "temp", 4) == 0) {
406			struct timeval now;
407
408			gettimeofday(&now, 0);
409			expire_time = now.tv_sec + 20 * 60;
410		} else if (strncmp(argv[0], "proxy", 5) == 0)
411			flags |= RTF_ANNOUNCE;
412		argv++;
413	}
414	if (rtmsg(RTM_GET) < 0) {
415		errx(1, "RTM_GET(%s) failed", host);
416		/* NOTREACHED */
417	}
418	sin = (struct sockaddr_in6 *)(rtm + 1);
419	sdl = (struct sockaddr_dl *)(ALIGN(sin->sin6_len) + (char *)sin);
420	if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
421		if (sdl->sdl_family == AF_LINK &&
422		    !(rtm->rtm_flags & RTF_GATEWAY)) {
423			switch (sdl->sdl_type) {
424			case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
425			case IFT_ISO88024: case IFT_ISO88025:
426			case IFT_L2VLAN: case IFT_BRIDGE:
427				goto overwrite;
428			}
429		}
430		fprintf(stderr, "set: cannot configure a new entry\n");
431		return 1;
432	}
433
434overwrite:
435	if (sdl->sdl_family != AF_LINK) {
436		printf("cannot intuit interface index and type for %s\n", host);
437		return (1);
438	}
439	sdl_m.sdl_type = sdl->sdl_type;
440	sdl_m.sdl_index = sdl->sdl_index;
441	return (rtmsg(RTM_ADD));
442}
443
444/*
445 * Display an individual neighbor cache entry
446 */
447void
448get(char *host)
449{
450	struct sockaddr_in6 *sin = &sin_m;
451	struct addrinfo hints, *res;
452	int gai_error;
453
454	sin_m = blank_sin;
455	bzero(&hints, sizeof(hints));
456	hints.ai_family = AF_INET6;
457	gai_error = getaddrinfo(host, NULL, &hints, &res);
458	if (gai_error) {
459		fprintf(stderr, "ndp: %s: %s\n", host,
460		    gai_strerror(gai_error));
461		return;
462	}
463	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
464	sin->sin6_scope_id =
465	    ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
466	dump(sin, 0);
467	if (found_entry == 0) {
468		getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
469		    sizeof(host_buf), NULL ,0,
470		    (nflag ? NI_NUMERICHOST : 0));
471		printf("%s (%s) -- no entry\n", host, host_buf);
472		exit(1);
473	}
474}
475
476/*
477 * Delete a neighbor cache entry
478 */
479int
480delete(char *host)
481{
482	struct sockaddr_in6 *sin = &sin_m;
483	register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
484	register char *cp = m_rtmsg.m_space;
485	struct sockaddr_dl *sdl;
486	struct addrinfo hints, *res;
487	int gai_error;
488
489	getsocket();
490	sin_m = blank_sin;
491
492	bzero(&hints, sizeof(hints));
493	hints.ai_family = AF_INET6;
494	gai_error = getaddrinfo(host, NULL, &hints, &res);
495	if (gai_error) {
496		fprintf(stderr, "ndp: %s: %s\n", host,
497		    gai_strerror(gai_error));
498		return 1;
499	}
500	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
501	sin->sin6_scope_id =
502	    ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
503	if (rtmsg(RTM_GET) < 0) {
504		errx(1, "RTM_GET(%s) failed", host);
505		/* NOTREACHED */
506	}
507	sin = (struct sockaddr_in6 *)(rtm + 1);
508	sdl = (struct sockaddr_dl *)(ALIGN(sin->sin6_len) + (char *)sin);
509	if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
510		if (sdl->sdl_family == AF_LINK &&
511		    !(rtm->rtm_flags & RTF_GATEWAY)) {
512			goto delete;
513		}
514		fprintf(stderr, "delete: cannot delete non-NDP entry\n");
515		return 1;
516	}
517
518delete:
519	if (sdl->sdl_family != AF_LINK) {
520		printf("cannot locate %s\n", host);
521		return (1);
522	}
523        /*
524         * need to reinit the field because it has rt_key
525         * but we want the actual address
526         */
527	NEXTADDR(RTA_DST, sin_m);
528	rtm->rtm_flags |= RTF_LLDATA;
529	if (rtmsg(RTM_DELETE) == 0) {
530		getnameinfo((struct sockaddr *)sin,
531		    sin->sin6_len, host_buf,
532		    sizeof(host_buf), NULL, 0,
533		    (nflag ? NI_NUMERICHOST : 0));
534		printf("%s (%s) deleted\n", host, host_buf);
535	}
536
537	return 0;
538}
539
540#define W_ADDR	36
541#define W_LL	17
542#define W_IF	6
543
544/*
545 * Dump the entire neighbor cache
546 */
547void
548dump(struct sockaddr_in6 *addr, int cflag)
549{
550	int mib[6];
551	size_t needed;
552	char *lim, *buf, *next;
553	struct rt_msghdr *rtm;
554	struct sockaddr_in6 *sin;
555	struct sockaddr_dl *sdl;
556	extern int h_errno;
557	struct in6_nbrinfo *nbi;
558	struct timeval now;
559	int addrwidth;
560	int llwidth;
561	int ifwidth;
562	char flgbuf[8];
563	char *ifname;
564
565	/* Print header */
566	if (!tflag && !cflag)
567		printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n",
568		    W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address",
569		    W_IF, W_IF, "Netif", "Expire", "S", "Flags");
570
571again:;
572	mib[0] = CTL_NET;
573	mib[1] = PF_ROUTE;
574	mib[2] = 0;
575	mib[3] = AF_INET6;
576	mib[4] = NET_RT_FLAGS;
577#ifdef RTF_LLINFO
578	mib[5] = RTF_LLINFO;
579#else
580	mib[5] = 0;
581#endif
582	if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
583		err(1, "sysctl(PF_ROUTE estimate)");
584	if (needed > 0) {
585		if ((buf = malloc(needed)) == NULL)
586			err(1, "malloc");
587		if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
588			err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)");
589		lim = buf + needed;
590	} else
591		buf = lim = NULL;
592
593	for (next = buf; next && next < lim; next += rtm->rtm_msglen) {
594		int isrouter = 0, prbs = 0;
595
596		rtm = (struct rt_msghdr *)next;
597		sin = (struct sockaddr_in6 *)(rtm + 1);
598		sdl = (struct sockaddr_dl *)((char *)sin + ALIGN(sin->sin6_len));
599
600		/*
601		 * Some OSes can produce a route that has the LINK flag but
602		 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD
603		 * and BSD/OS, where xx is not the interface identifier on
604		 * lo0).  Such routes entry would annoy getnbrinfo() below,
605		 * so we skip them.
606		 * XXX: such routes should have the GATEWAY flag, not the
607		 * LINK flag.  However, there is rotten routing software
608		 * that advertises all routes that have the GATEWAY flag.
609		 * Thus, KAME kernel intentionally does not set the LINK flag.
610		 * What is to be fixed is not ndp, but such routing software
611		 * (and the kernel workaround)...
612		 */
613		if (sdl->sdl_family != AF_LINK)
614			continue;
615
616		if (!(rtm->rtm_flags & RTF_HOST))
617			continue;
618
619		if (addr) {
620			if (IN6_ARE_ADDR_EQUAL(&addr->sin6_addr,
621			    &sin->sin6_addr) == 0 ||
622			    addr->sin6_scope_id != sin->sin6_scope_id)
623				continue;
624			found_entry = 1;
625		} else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr))
626			continue;
627		if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) ||
628		    IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) {
629			/* XXX: should scope id be filled in the kernel? */
630			if (sin->sin6_scope_id == 0)
631				sin->sin6_scope_id = sdl->sdl_index;
632		}
633		getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
634		    sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0));
635		if (cflag) {
636#ifdef RTF_WASCLONED
637			if (rtm->rtm_flags & RTF_WASCLONED)
638				delete(host_buf);
639#elif defined(RTF_CLONED)
640			if (rtm->rtm_flags & RTF_CLONED)
641				delete(host_buf);
642#else
643			delete(host_buf);
644#endif
645			continue;
646		}
647		gettimeofday(&now, 0);
648		if (tflag)
649			ts_print(&now);
650
651		addrwidth = strlen(host_buf);
652		if (addrwidth < W_ADDR)
653			addrwidth = W_ADDR;
654		llwidth = strlen(ether_str(sdl));
655		if (W_ADDR + W_LL - addrwidth > llwidth)
656			llwidth = W_ADDR + W_LL - addrwidth;
657		ifname = if_indextoname(sdl->sdl_index, ifix_buf);
658		if (!ifname)
659			ifname = "?";
660		ifwidth = strlen(ifname);
661		if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth)
662			ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth;
663
664		printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf,
665		    llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname);
666
667		/* Print neighbor discovery specific informations */
668		nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1);
669		if (nbi) {
670			if (nbi->expire > now.tv_sec) {
671				printf(" %-9.9s",
672				    sec2str(nbi->expire - now.tv_sec));
673			} else if (nbi->expire == 0)
674				printf(" %-9.9s", "permanent");
675			else
676				printf(" %-9.9s", "expired");
677
678			switch (nbi->state) {
679			case ND6_LLINFO_NOSTATE:
680				 printf(" N");
681				 break;
682#ifdef ND6_LLINFO_WAITDELETE
683			case ND6_LLINFO_WAITDELETE:
684				 printf(" W");
685				 break;
686#endif
687			case ND6_LLINFO_INCOMPLETE:
688				 printf(" I");
689				 break;
690			case ND6_LLINFO_REACHABLE:
691				 printf(" R");
692				 break;
693			case ND6_LLINFO_STALE:
694				 printf(" S");
695				 break;
696			case ND6_LLINFO_DELAY:
697				 printf(" D");
698				 break;
699			case ND6_LLINFO_PROBE:
700				 printf(" P");
701				 break;
702			default:
703				 printf(" ?");
704				 break;
705			}
706
707			isrouter = nbi->isrouter;
708			prbs = nbi->asked;
709		} else {
710			warnx("failed to get neighbor information");
711			printf("  ");
712		}
713
714		/*
715		 * other flags. R: router, P: proxy, W: ??
716		 */
717		if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
718			snprintf(flgbuf, sizeof(flgbuf), "%s%s",
719			    isrouter ? "R" : "",
720			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
721		} else {
722			sin = (struct sockaddr_in6 *)
723			    (sdl->sdl_len + (char *)sdl);
724#if 0	/* W and P are mystery even for us */
725			snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s",
726			    isrouter ? "R" : "",
727			    !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "",
728			    (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "",
729			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
730#else
731			snprintf(flgbuf, sizeof(flgbuf), "%s%s",
732			    isrouter ? "R" : "",
733			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
734#endif
735		}
736		printf(" %s", flgbuf);
737
738		if (prbs)
739			printf(" %d", prbs);
740
741		printf("\n");
742	}
743	if (buf != NULL)
744		free(buf);
745
746	if (repeat) {
747		printf("\n");
748		fflush(stdout);
749		sleep(repeat);
750		goto again;
751	}
752}
753
754static struct in6_nbrinfo *
755getnbrinfo(struct in6_addr *addr, int ifindex, int warning)
756{
757	static struct in6_nbrinfo nbi;
758	int s;
759
760	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
761		err(1, "socket");
762
763	bzero(&nbi, sizeof(nbi));
764	if_indextoname(ifindex, nbi.ifname);
765	nbi.addr = *addr;
766	if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) {
767		if (warning)
768			warn("ioctl(SIOCGNBRINFO_IN6)");
769		close(s);
770		return(NULL);
771	}
772
773	close(s);
774	return(&nbi);
775}
776
777static char *
778ether_str(struct sockaddr_dl *sdl)
779{
780	static char hbuf[NI_MAXHOST];
781	char *cp;
782
783	if (sdl->sdl_alen == ETHER_ADDR_LEN) {
784		strlcpy(hbuf, ether_ntoa((struct ether_addr *)LLADDR(sdl)),
785		    sizeof(hbuf));
786	} else if (sdl->sdl_alen) {
787		int n = sdl->sdl_nlen > 0 ? sdl->sdl_nlen + 1 : 0;
788		snprintf(hbuf, sizeof(hbuf), "%s", link_ntoa(sdl) + n);
789	} else
790		snprintf(hbuf, sizeof(hbuf), "(incomplete)");
791
792	return(hbuf);
793}
794
795int
796ndp_ether_aton(char *a, u_char *n)
797{
798	int i, o[6];
799
800	i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2],
801	    &o[3], &o[4], &o[5]);
802	if (i != 6) {
803		fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a);
804		return (1);
805	}
806	for (i = 0; i < 6; i++)
807		n[i] = o[i];
808	return (0);
809}
810
811void
812usage()
813{
814	printf("usage: ndp [-nt] hostname\n");
815	printf("       ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n");
816	printf("       ndp [-nt] -A wait\n");
817	printf("       ndp [-nt] -d hostname\n");
818	printf("       ndp [-nt] -f filename\n");
819	printf("       ndp [-nt] -i interface [flags...]\n");
820#ifdef SIOCSDEFIFACE_IN6
821	printf("       ndp [-nt] -I [interface|delete]\n");
822#endif
823	printf("       ndp [-nt] -s nodename etheraddr [temp] [proxy]\n");
824	exit(1);
825}
826
827int
828rtmsg(int cmd)
829{
830	static int seq;
831	int rlen;
832	register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
833	register char *cp = m_rtmsg.m_space;
834	register int l;
835
836	errno = 0;
837	if (cmd == RTM_DELETE)
838		goto doit;
839	bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
840	rtm->rtm_flags = flags;
841	rtm->rtm_version = RTM_VERSION;
842
843	switch (cmd) {
844	default:
845		fprintf(stderr, "ndp: internal wrong cmd\n");
846		exit(1);
847	case RTM_ADD:
848		rtm->rtm_addrs |= RTA_GATEWAY;
849		if (expire_time) {
850			rtm->rtm_rmx.rmx_expire = expire_time;
851			rtm->rtm_inits = RTV_EXPIRE;
852		}
853		rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA);
854#if 0 /* we don't support ipv6addr/128 type proxying */
855		if (rtm->rtm_flags & RTF_ANNOUNCE) {
856			rtm->rtm_flags &= ~RTF_HOST;
857			rtm->rtm_addrs |= RTA_NETMASK;
858		}
859#endif
860		/* FALLTHROUGH */
861	case RTM_GET:
862		rtm->rtm_addrs |= RTA_DST;
863	}
864
865	NEXTADDR(RTA_DST, sin_m);
866	NEXTADDR(RTA_GATEWAY, sdl_m);
867#if 0 /* we don't support ipv6addr/128 type proxying */
868	memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr));
869	NEXTADDR(RTA_NETMASK, so_mask);
870#endif
871
872	rtm->rtm_msglen = cp - (char *)&m_rtmsg;
873doit:
874	l = rtm->rtm_msglen;
875	rtm->rtm_seq = ++seq;
876	rtm->rtm_type = cmd;
877	if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
878		if (errno != ESRCH || cmd != RTM_DELETE) {
879			err(1, "writing to routing socket");
880			/* NOTREACHED */
881		}
882	}
883	do {
884		l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
885	} while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
886	if (l < 0)
887		(void) fprintf(stderr, "ndp: read from routing socket: %s\n",
888		    strerror(errno));
889	return (0);
890}
891
892void
893ifinfo(char *ifname, int argc, char **argv)
894{
895	struct in6_ndireq nd;
896	int i, s;
897	u_int32_t newflags;
898#ifdef IPV6CTL_USETEMPADDR
899	u_int8_t nullbuf[8];
900#endif
901
902	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
903		err(1, "socket");
904		/* NOTREACHED */
905	}
906	bzero(&nd, sizeof(nd));
907	strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
908	if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
909		err(1, "ioctl(SIOCGIFINFO_IN6)");
910		/* NOTREACHED */
911	}
912#define ND nd.ndi
913	newflags = ND.flags;
914	for (i = 0; i < argc; i++) {
915		int clear = 0;
916		char *cp = argv[i];
917
918		if (*cp == '-') {
919			clear = 1;
920			cp++;
921		}
922
923#define SETFLAG(s, f) \
924	do {\
925		if (strcmp(cp, (s)) == 0) {\
926			if (clear)\
927				newflags &= ~(f);\
928			else\
929				newflags |= (f);\
930		}\
931	} while (0)
932/*
933 * XXX: this macro is not 100% correct, in that it matches "nud" against
934 *      "nudbogus".  But we just let it go since this is minor.
935 */
936#define SETVALUE(f, v) \
937	do { \
938		char *valptr; \
939		unsigned long newval; \
940		v = 0; /* unspecified */ \
941		if (strncmp(cp, f, strlen(f)) == 0) { \
942			valptr = strchr(cp, '='); \
943			if (valptr == NULL) \
944				err(1, "syntax error in %s field", (f)); \
945			errno = 0; \
946			newval = strtoul(++valptr, NULL, 0); \
947			if (errno) \
948				err(1, "syntax error in %s's value", (f)); \
949			v = newval; \
950		} \
951	} while (0)
952
953		SETFLAG("disabled", ND6_IFF_IFDISABLED);
954		SETFLAG("nud", ND6_IFF_PERFORMNUD);
955#ifdef ND6_IFF_ACCEPT_RTADV
956		SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV);
957#endif
958#ifdef ND6_IFF_AUTO_LINKLOCAL
959		SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL);
960#endif
961#ifdef ND6_IFF_NO_PREFER_IFACE
962		SETFLAG("no_prefer_iface", ND6_IFF_NO_PREFER_IFACE);
963#endif
964		SETVALUE("basereachable", ND.basereachable);
965		SETVALUE("retrans", ND.retrans);
966		SETVALUE("curhlim", ND.chlim);
967
968		ND.flags = newflags;
969		if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) {
970			err(1, "ioctl(SIOCSIFINFO_IN6)");
971			/* NOTREACHED */
972		}
973#undef SETFLAG
974#undef SETVALUE
975	}
976
977	if (!ND.initialized) {
978		errx(1, "%s: not initialized yet", ifname);
979		/* NOTREACHED */
980	}
981
982	if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
983		err(1, "ioctl(SIOCGIFINFO_IN6)");
984		/* NOTREACHED */
985	}
986	printf("linkmtu=%d", ND.linkmtu);
987	printf(", maxmtu=%d", ND.maxmtu);
988	printf(", curhlim=%d", ND.chlim);
989	printf(", basereachable=%ds%dms",
990	    ND.basereachable / 1000, ND.basereachable % 1000);
991	printf(", reachable=%ds", ND.reachable);
992	printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
993#ifdef IPV6CTL_USETEMPADDR
994	memset(nullbuf, 0, sizeof(nullbuf));
995	if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) {
996		int j;
997		u_int8_t *rbuf;
998
999		for (i = 0; i < 3; i++) {
1000			switch (i) {
1001			case 0:
1002				printf("\nRandom seed(0): ");
1003				rbuf = ND.randomseed0;
1004				break;
1005			case 1:
1006				printf("\nRandom seed(1): ");
1007				rbuf = ND.randomseed1;
1008				break;
1009			case 2:
1010				printf("\nRandom ID:      ");
1011				rbuf = ND.randomid;
1012				break;
1013			default:
1014				errx(1, "impossible case for tempaddr display");
1015			}
1016			for (j = 0; j < 8; j++)
1017				printf("%02x", rbuf[j]);
1018		}
1019	}
1020#endif
1021	if (ND.flags) {
1022		printf("\nFlags: ");
1023#ifdef ND6_IFF_IFDISABLED
1024		if ((ND.flags & ND6_IFF_IFDISABLED))
1025			printf("disabled ");
1026#endif
1027		if ((ND.flags & ND6_IFF_PERFORMNUD))
1028			printf("nud ");
1029#ifdef ND6_IFF_ACCEPT_RTADV
1030		if ((ND.flags & ND6_IFF_ACCEPT_RTADV))
1031			printf("accept_rtadv ");
1032#endif
1033#ifdef ND6_IFF_AUTO_LINKLOCAL
1034		if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL))
1035			printf("auto_linklocal ");
1036#endif
1037#ifdef ND6_IFF_NO_PREFER_IFACE
1038		if ((ND.flags & ND6_IFF_NO_PREFER_IFACE))
1039			printf("no_prefer_iface ");
1040#endif
1041	}
1042	putc('\n', stdout);
1043#undef ND
1044
1045	close(s);
1046}
1047
1048#ifndef ND_RA_FLAG_RTPREF_MASK	/* XXX: just for compilation on *BSD release */
1049#define ND_RA_FLAG_RTPREF_MASK	0x18 /* 00011000 */
1050#endif
1051
1052void
1053rtrlist()
1054{
1055#ifdef ICMPV6CTL_ND6_DRLIST
1056	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST };
1057	char *buf;
1058	struct in6_defrouter *p, *ep;
1059	size_t l;
1060	struct timeval now;
1061
1062	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1063		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1064		/*NOTREACHED*/
1065	}
1066	if (l == 0)
1067		return;
1068	buf = malloc(l);
1069	if (!buf) {
1070		err(1, "malloc");
1071		/*NOTREACHED*/
1072	}
1073	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1074		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1075		/*NOTREACHED*/
1076	}
1077
1078	ep = (struct in6_defrouter *)(buf + l);
1079	for (p = (struct in6_defrouter *)buf; p < ep; p++) {
1080		int rtpref;
1081
1082		if (getnameinfo((struct sockaddr *)&p->rtaddr,
1083		    p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0,
1084		    (nflag ? NI_NUMERICHOST : 0)) != 0)
1085			strlcpy(host_buf, "?", sizeof(host_buf));
1086
1087		printf("%s if=%s", host_buf,
1088		    if_indextoname(p->if_index, ifix_buf));
1089		printf(", flags=%s%s",
1090		    p->flags & ND_RA_FLAG_MANAGED ? "M" : "",
1091		    p->flags & ND_RA_FLAG_OTHER   ? "O" : "");
1092		rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff;
1093		printf(", pref=%s", rtpref_str[rtpref]);
1094
1095		gettimeofday(&now, 0);
1096		if (p->expire == 0)
1097			printf(", expire=Never\n");
1098		else
1099			printf(", expire=%s\n",
1100			    sec2str(p->expire - now.tv_sec));
1101	}
1102	free(buf);
1103#else
1104	struct in6_drlist dr;
1105	int s, i;
1106	struct timeval now;
1107
1108	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1109		err(1, "socket");
1110		/* NOTREACHED */
1111	}
1112	bzero(&dr, sizeof(dr));
1113	strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */
1114	if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
1115		err(1, "ioctl(SIOCGDRLST_IN6)");
1116		/* NOTREACHED */
1117	}
1118#define DR dr.defrouter[i]
1119	for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) {
1120		struct sockaddr_in6 sin6;
1121
1122		bzero(&sin6, sizeof(sin6));
1123		sin6.sin6_family = AF_INET6;
1124		sin6.sin6_len = sizeof(sin6);
1125		sin6.sin6_addr = DR.rtaddr;
1126		getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf,
1127		    sizeof(host_buf), NULL, 0,
1128		    (nflag ? NI_NUMERICHOST : 0));
1129
1130		printf("%s if=%s", host_buf,
1131		    if_indextoname(DR.if_index, ifix_buf));
1132		printf(", flags=%s%s",
1133		    DR.flags & ND_RA_FLAG_MANAGED ? "M" : "",
1134		    DR.flags & ND_RA_FLAG_OTHER   ? "O" : "");
1135		gettimeofday(&now, 0);
1136		if (DR.expire == 0)
1137			printf(", expire=Never\n");
1138		else
1139			printf(", expire=%s\n",
1140			    sec2str(DR.expire - now.tv_sec));
1141	}
1142#undef DR
1143	close(s);
1144#endif
1145}
1146
1147void
1148plist()
1149{
1150#ifdef ICMPV6CTL_ND6_PRLIST
1151	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST };
1152	char *buf;
1153	struct in6_prefix *p, *ep, *n;
1154	struct sockaddr_in6 *advrtr;
1155	size_t l;
1156	struct timeval now;
1157	const int niflags = NI_NUMERICHOST;
1158	int ninflags = nflag ? NI_NUMERICHOST : 0;
1159	char namebuf[NI_MAXHOST];
1160
1161	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1162		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1163		/*NOTREACHED*/
1164	}
1165	buf = malloc(l);
1166	if (!buf) {
1167		err(1, "malloc");
1168		/*NOTREACHED*/
1169	}
1170	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1171		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1172		/*NOTREACHED*/
1173	}
1174
1175	ep = (struct in6_prefix *)(buf + l);
1176	for (p = (struct in6_prefix *)buf; p < ep; p = n) {
1177		advrtr = (struct sockaddr_in6 *)(p + 1);
1178		n = (struct in6_prefix *)&advrtr[p->advrtrs];
1179
1180		if (getnameinfo((struct sockaddr *)&p->prefix,
1181		    p->prefix.sin6_len, namebuf, sizeof(namebuf),
1182		    NULL, 0, niflags) != 0)
1183			strlcpy(namebuf, "?", sizeof(namebuf));
1184		printf("%s/%d if=%s\n", namebuf, p->prefixlen,
1185		    if_indextoname(p->if_index, ifix_buf));
1186
1187		gettimeofday(&now, 0);
1188		/*
1189		 * meaning of fields, especially flags, is very different
1190		 * by origin.  notify the difference to the users.
1191		 */
1192		printf("flags=%s%s%s%s%s",
1193		    p->raflags.onlink ? "L" : "",
1194		    p->raflags.autonomous ? "A" : "",
1195		    (p->flags & NDPRF_ONLINK) != 0 ? "O" : "",
1196		    (p->flags & NDPRF_DETACHED) != 0 ? "D" : "",
1197#ifdef NDPRF_HOME
1198		    (p->flags & NDPRF_HOME) != 0 ? "H" : ""
1199#else
1200		    ""
1201#endif
1202		    );
1203		if (p->vltime == ND6_INFINITE_LIFETIME)
1204			printf(" vltime=infinity");
1205		else
1206			printf(" vltime=%lu", (unsigned long)p->vltime);
1207		if (p->pltime == ND6_INFINITE_LIFETIME)
1208			printf(", pltime=infinity");
1209		else
1210			printf(", pltime=%lu", (unsigned long)p->pltime);
1211		if (p->expire == 0)
1212			printf(", expire=Never");
1213		else if (p->expire >= now.tv_sec)
1214			printf(", expire=%s",
1215			    sec2str(p->expire - now.tv_sec));
1216		else
1217			printf(", expired");
1218		printf(", ref=%d", p->refcnt);
1219		printf("\n");
1220		/*
1221		 * "advertising router" list is meaningful only if the prefix
1222		 * information is from RA.
1223		 */
1224		if (p->advrtrs) {
1225			int j;
1226			struct sockaddr_in6 *sin6;
1227
1228			sin6 = advrtr;
1229			printf("  advertised by\n");
1230			for (j = 0; j < p->advrtrs; j++) {
1231				struct in6_nbrinfo *nbi;
1232
1233				if (getnameinfo((struct sockaddr *)sin6,
1234				    sin6->sin6_len, namebuf, sizeof(namebuf),
1235				    NULL, 0, ninflags) != 0)
1236					strlcpy(namebuf, "?", sizeof(namebuf));
1237				printf("    %s", namebuf);
1238
1239				nbi = getnbrinfo(&sin6->sin6_addr,
1240				    p->if_index, 0);
1241				if (nbi) {
1242					switch (nbi->state) {
1243					case ND6_LLINFO_REACHABLE:
1244					case ND6_LLINFO_STALE:
1245					case ND6_LLINFO_DELAY:
1246					case ND6_LLINFO_PROBE:
1247						printf(" (reachable)\n");
1248						break;
1249					default:
1250						printf(" (unreachable)\n");
1251					}
1252				} else
1253					printf(" (no neighbor state)\n");
1254				sin6++;
1255			}
1256		} else
1257			printf("  No advertising router\n");
1258	}
1259	free(buf);
1260#else
1261	struct in6_prlist pr;
1262	int s, i;
1263	struct timeval now;
1264
1265	gettimeofday(&now, 0);
1266
1267	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1268		err(1, "socket");
1269		/* NOTREACHED */
1270	}
1271	bzero(&pr, sizeof(pr));
1272	strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */
1273	if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
1274		err(1, "ioctl(SIOCGPRLST_IN6)");
1275		/* NOTREACHED */
1276	}
1277#define PR pr.prefix[i]
1278	for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
1279		struct sockaddr_in6 p6;
1280		char namebuf[NI_MAXHOST];
1281		int niflags;
1282
1283#ifdef NDPRF_ONLINK
1284		p6 = PR.prefix;
1285#else
1286		memset(&p6, 0, sizeof(p6));
1287		p6.sin6_family = AF_INET6;
1288		p6.sin6_len = sizeof(p6);
1289		p6.sin6_addr = PR.prefix;
1290#endif
1291		niflags = NI_NUMERICHOST;
1292		if (getnameinfo((struct sockaddr *)&p6,
1293		    sizeof(p6), namebuf, sizeof(namebuf),
1294		    NULL, 0, niflags)) {
1295			warnx("getnameinfo failed");
1296			continue;
1297		}
1298		printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
1299		    if_indextoname(PR.if_index, ifix_buf));
1300
1301		gettimeofday(&now, 0);
1302		/*
1303		 * meaning of fields, especially flags, is very different
1304		 * by origin.  notify the difference to the users.
1305		 */
1306#if 0
1307		printf("  %s",
1308		    PR.origin == PR_ORIG_RA ? "" : "advertise: ");
1309#endif
1310#ifdef NDPRF_ONLINK
1311		printf("flags=%s%s%s%s%s",
1312		    PR.raflags.onlink ? "L" : "",
1313		    PR.raflags.autonomous ? "A" : "",
1314		    (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "",
1315		    (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "",
1316#ifdef NDPRF_HOME
1317		    (PR.flags & NDPRF_HOME) != 0 ? "H" : ""
1318#else
1319		    ""
1320#endif
1321		    );
1322#else
1323		printf("flags=%s%s",
1324		    PR.raflags.onlink ? "L" : "",
1325		    PR.raflags.autonomous ? "A" : "");
1326#endif
1327		if (PR.vltime == ND6_INFINITE_LIFETIME)
1328			printf(" vltime=infinity");
1329		else
1330			printf(" vltime=%lu", PR.vltime);
1331		if (PR.pltime == ND6_INFINITE_LIFETIME)
1332			printf(", pltime=infinity");
1333		else
1334			printf(", pltime=%lu", PR.pltime);
1335		if (PR.expire == 0)
1336			printf(", expire=Never");
1337		else if (PR.expire >= now.tv_sec)
1338			printf(", expire=%s",
1339			    sec2str(PR.expire - now.tv_sec));
1340		else
1341			printf(", expired");
1342#ifdef NDPRF_ONLINK
1343		printf(", ref=%d", PR.refcnt);
1344#endif
1345#if 0
1346		switch (PR.origin) {
1347		case PR_ORIG_RA:
1348			printf(", origin=RA");
1349			break;
1350		case PR_ORIG_RR:
1351			printf(", origin=RR");
1352			break;
1353		case PR_ORIG_STATIC:
1354			printf(", origin=static");
1355			break;
1356		case PR_ORIG_KERNEL:
1357			printf(", origin=kernel");
1358			break;
1359		default:
1360			printf(", origin=?");
1361			break;
1362		}
1363#endif
1364		printf("\n");
1365		/*
1366		 * "advertising router" list is meaningful only if the prefix
1367		 * information is from RA.
1368		 */
1369		if (0 &&	/* prefix origin is almost obsolted */
1370		    PR.origin != PR_ORIG_RA)
1371			;
1372		else if (PR.advrtrs) {
1373			int j;
1374			printf("  advertised by\n");
1375			for (j = 0; j < PR.advrtrs; j++) {
1376				struct sockaddr_in6 sin6;
1377				struct in6_nbrinfo *nbi;
1378
1379				bzero(&sin6, sizeof(sin6));
1380				sin6.sin6_family = AF_INET6;
1381				sin6.sin6_len = sizeof(sin6);
1382				sin6.sin6_addr = PR.advrtr[j];
1383				sin6.sin6_scope_id = PR.if_index; /* XXX */
1384				getnameinfo((struct sockaddr *)&sin6,
1385				    sin6.sin6_len, host_buf,
1386				    sizeof(host_buf), NULL, 0,
1387				    (nflag ? NI_NUMERICHOST : 0));
1388				printf("    %s", host_buf);
1389
1390				nbi = getnbrinfo(&sin6.sin6_addr,
1391				    PR.if_index, 0);
1392				if (nbi) {
1393					switch (nbi->state) {
1394					case ND6_LLINFO_REACHABLE:
1395					case ND6_LLINFO_STALE:
1396					case ND6_LLINFO_DELAY:
1397					case ND6_LLINFO_PROBE:
1398						 printf(" (reachable)\n");
1399						 break;
1400					default:
1401						 printf(" (unreachable)\n");
1402					}
1403				} else
1404					printf(" (no neighbor state)\n");
1405			}
1406			if (PR.advrtrs > DRLSTSIZ)
1407				printf("    and %d routers\n",
1408				    PR.advrtrs - DRLSTSIZ);
1409		} else
1410			printf("  No advertising router\n");
1411	}
1412#undef PR
1413	close(s);
1414#endif
1415}
1416
1417void
1418pfx_flush()
1419{
1420	char dummyif[IFNAMSIZ+8];
1421	int s;
1422
1423	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1424		err(1, "socket");
1425	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1426	if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
1427		err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
1428}
1429
1430void
1431rtr_flush()
1432{
1433	char dummyif[IFNAMSIZ+8];
1434	int s;
1435
1436	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1437		err(1, "socket");
1438	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1439	if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
1440		err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
1441
1442	close(s);
1443}
1444
1445void
1446harmonize_rtr()
1447{
1448	char dummyif[IFNAMSIZ+8];
1449	int s;
1450
1451	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1452		err(1, "socket");
1453	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1454	if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
1455		err(1, "ioctl(SIOCSNDFLUSH_IN6)");
1456
1457	close(s);
1458}
1459
1460#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
1461static void
1462setdefif(char *ifname)
1463{
1464	struct in6_ndifreq ndifreq;
1465	unsigned int ifindex;
1466
1467	if (strcasecmp(ifname, "delete") == 0)
1468		ifindex = 0;
1469	else {
1470		if ((ifindex = if_nametoindex(ifname)) == 0)
1471			err(1, "failed to resolve i/f index for %s", ifname);
1472	}
1473
1474	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1475		err(1, "socket");
1476
1477	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1478	ndifreq.ifindex = ifindex;
1479
1480	if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1481		err(1, "ioctl(SIOCSDEFIFACE_IN6)");
1482
1483	close(s);
1484}
1485
1486static void
1487getdefif()
1488{
1489	struct in6_ndifreq ndifreq;
1490	char ifname[IFNAMSIZ+8];
1491
1492	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1493		err(1, "socket");
1494
1495	memset(&ndifreq, 0, sizeof(ndifreq));
1496	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1497
1498	if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1499		err(1, "ioctl(SIOCGDEFIFACE_IN6)");
1500
1501	if (ndifreq.ifindex == 0)
1502		printf("No default interface.\n");
1503	else {
1504		if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL)
1505			err(1, "failed to resolve ifname for index %lu",
1506			    ndifreq.ifindex);
1507		printf("ND default interface = %s\n", ifname);
1508	}
1509
1510	close(s);
1511}
1512#endif
1513
1514static char *
1515sec2str(time_t total)
1516{
1517	static char result[256];
1518	int days, hours, mins, secs;
1519	int first = 1;
1520	char *p = result;
1521	char *ep = &result[sizeof(result)];
1522	int n;
1523
1524	days = total / 3600 / 24;
1525	hours = (total / 3600) % 24;
1526	mins = (total / 60) % 60;
1527	secs = total % 60;
1528
1529	if (days) {
1530		first = 0;
1531		n = snprintf(p, ep - p, "%dd", days);
1532		if (n < 0 || n >= ep - p)
1533			return "?";
1534		p += n;
1535	}
1536	if (!first || hours) {
1537		first = 0;
1538		n = snprintf(p, ep - p, "%dh", hours);
1539		if (n < 0 || n >= ep - p)
1540			return "?";
1541		p += n;
1542	}
1543	if (!first || mins) {
1544		first = 0;
1545		n = snprintf(p, ep - p, "%dm", mins);
1546		if (n < 0 || n >= ep - p)
1547			return "?";
1548		p += n;
1549	}
1550	snprintf(p, ep - p, "%ds", secs);
1551
1552	return(result);
1553}
1554
1555/*
1556 * Print the timestamp
1557 * from tcpdump/util.c
1558 */
1559static void
1560ts_print(const struct timeval *tvp)
1561{
1562	int s;
1563
1564	/* Default */
1565	s = (tvp->tv_sec + thiszone) % 86400;
1566	(void)printf("%02d:%02d:%02d.%06u ",
1567	    s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec);
1568}
1569
1570#undef NEXTADDR
1571