ndp.c revision 243903 
1/*	$FreeBSD: head/usr.sbin/ndp/ndp.c 243903 2012-12-05 19:45:24Z 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 void ts_print(const struct timeval *);
157
158#ifdef ICMPV6CTL_ND6_DRLIST
159static char *rtpref_str[] = {
160	"medium",		/* 00 */
161	"high",			/* 01 */
162	"rsv",			/* 10 */
163	"low"			/* 11 */
164};
165#endif
166
167int mode = 0;
168char *arg = NULL;
169
170int
171main(argc, argv)
172	int argc;
173	char **argv;
174{
175	int ch;
176
177	pid = getpid();
178	thiszone = gmt2local(0);
179	while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1)
180		switch (ch) {
181		case 'a':
182		case 'c':
183		case 'p':
184		case 'r':
185		case 'H':
186		case 'P':
187		case 'R':
188		case 's':
189		case 'I':
190			if (mode) {
191				usage();
192				/*NOTREACHED*/
193			}
194			mode = ch;
195			arg = NULL;
196			break;
197		case 'd':
198		case 'f':
199		case 'i' :
200			if (mode) {
201				usage();
202				/*NOTREACHED*/
203			}
204			mode = ch;
205			arg = optarg;
206			break;
207		case 'n':
208			nflag = 1;
209			break;
210		case 't':
211			tflag = 1;
212			break;
213		case 'A':
214			if (mode) {
215				usage();
216				/*NOTREACHED*/
217			}
218			mode = 'a';
219			repeat = atoi(optarg);
220			if (repeat < 0) {
221				usage();
222				/*NOTREACHED*/
223			}
224			break;
225		default:
226			usage();
227		}
228
229	argc -= optind;
230	argv += optind;
231
232	switch (mode) {
233	case 'a':
234	case 'c':
235		if (argc != 0) {
236			usage();
237			/*NOTREACHED*/
238		}
239		dump(0, mode == 'c');
240		break;
241	case 'd':
242		if (argc != 0) {
243			usage();
244			/*NOTREACHED*/
245		}
246		delete(arg);
247		break;
248	case 'I':
249#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
250		if (argc > 1) {
251			usage();
252			/*NOTREACHED*/
253		} else if (argc == 1) {
254			if (strcmp(*argv, "delete") == 0 ||
255			    if_nametoindex(*argv))
256				setdefif(*argv);
257			else
258				errx(1, "invalid interface %s", *argv);
259		}
260		getdefif(); /* always call it to print the result */
261		break;
262#else
263		errx(1, "not supported yet");
264		/*NOTREACHED*/
265#endif
266	case 'p':
267		if (argc != 0) {
268			usage();
269			/*NOTREACHED*/
270		}
271		plist();
272		break;
273	case 'i':
274		ifinfo(arg, argc, argv);
275		break;
276	case 'r':
277		if (argc != 0) {
278			usage();
279			/*NOTREACHED*/
280		}
281		rtrlist();
282		break;
283	case 's':
284		if (argc < 2 || argc > 4)
285			usage();
286		exit(set(argc, argv) ? 1 : 0);
287	case 'H':
288		if (argc != 0) {
289			usage();
290			/*NOTREACHED*/
291		}
292		harmonize_rtr();
293		break;
294	case 'P':
295		if (argc != 0) {
296			usage();
297			/*NOTREACHED*/
298		}
299		pfx_flush();
300		break;
301	case 'R':
302		if (argc != 0) {
303			usage();
304			/*NOTREACHED*/
305		}
306		rtr_flush();
307		break;
308	case 0:
309		if (argc != 1) {
310			usage();
311			/*NOTREACHED*/
312		}
313		get(argv[0]);
314		break;
315	}
316	exit(0);
317}
318
319/*
320 * Process a file to set standard ndp entries
321 */
322int
323file(name)
324	char *name;
325{
326	FILE *fp;
327	int i, retval;
328	char line[100], arg[5][50], *args[5];
329
330	if ((fp = fopen(name, "r")) == NULL) {
331		fprintf(stderr, "ndp: cannot open %s\n", name);
332		exit(1);
333	}
334	args[0] = &arg[0][0];
335	args[1] = &arg[1][0];
336	args[2] = &arg[2][0];
337	args[3] = &arg[3][0];
338	args[4] = &arg[4][0];
339	retval = 0;
340	while (fgets(line, sizeof(line), fp) != NULL) {
341		i = sscanf(line, "%49s %49s %49s %49s %49s",
342		    arg[0], arg[1], arg[2], arg[3], arg[4]);
343		if (i < 2) {
344			fprintf(stderr, "ndp: bad line: %s\n", line);
345			retval = 1;
346			continue;
347		}
348		if (set(i, args))
349			retval = 1;
350	}
351	fclose(fp);
352	return (retval);
353}
354
355void
356getsocket()
357{
358	if (s < 0) {
359		s = socket(PF_ROUTE, SOCK_RAW, 0);
360		if (s < 0) {
361			err(1, "socket");
362			/* NOTREACHED */
363		}
364	}
365}
366
367struct	sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 };
368struct	sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m;
369struct	sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m;
370int	expire_time, flags, found_entry;
371struct	{
372	struct	rt_msghdr m_rtm;
373	char	m_space[512];
374}	m_rtmsg;
375
376/*
377 * Set an individual neighbor cache entry
378 */
379int
380set(argc, argv)
381	int argc;
382	char **argv;
383{
384	register struct sockaddr_in6 *sin = &sin_m;
385	register struct sockaddr_dl *sdl;
386	register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
387	struct addrinfo hints, *res;
388	int gai_error;
389	u_char *ea;
390	char *host = argv[0], *eaddr = argv[1];
391
392	getsocket();
393	argc -= 2;
394	argv += 2;
395	sdl_m = blank_sdl;
396	sin_m = blank_sin;
397
398	bzero(&hints, sizeof(hints));
399	hints.ai_family = AF_INET6;
400	gai_error = getaddrinfo(host, NULL, &hints, &res);
401	if (gai_error) {
402		fprintf(stderr, "ndp: %s: %s\n", host,
403			gai_strerror(gai_error));
404		return 1;
405	}
406	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
407	sin->sin6_scope_id =
408	    ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
409	ea = (u_char *)LLADDR(&sdl_m);
410	if (ndp_ether_aton(eaddr, ea) == 0)
411		sdl_m.sdl_alen = 6;
412	flags = expire_time = 0;
413	while (argc-- > 0) {
414		if (strncmp(argv[0], "temp", 4) == 0) {
415			struct timeval time;
416
417			gettimeofday(&time, 0);
418			expire_time = time.tv_sec + 20 * 60;
419		} else if (strncmp(argv[0], "proxy", 5) == 0)
420			flags |= RTF_ANNOUNCE;
421		argv++;
422	}
423	if (rtmsg(RTM_GET) < 0) {
424		errx(1, "RTM_GET(%s) failed", host);
425		/* NOTREACHED */
426	}
427	sin = (struct sockaddr_in6 *)(rtm + 1);
428	sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
429	if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
430		if (sdl->sdl_family == AF_LINK &&
431		    !(rtm->rtm_flags & RTF_GATEWAY)) {
432			switch (sdl->sdl_type) {
433			case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
434			case IFT_ISO88024: case IFT_ISO88025:
435			case IFT_L2VLAN: case IFT_BRIDGE:
436				goto overwrite;
437			}
438		}
439		/*
440		 * IPv4 arp command retries with sin_other = SIN_PROXY here.
441		 */
442		fprintf(stderr, "set: cannot configure a new entry\n");
443		return 1;
444	}
445
446overwrite:
447	if (sdl->sdl_family != AF_LINK) {
448		printf("cannot intuit interface index and type for %s\n", host);
449		return (1);
450	}
451	sdl_m.sdl_type = sdl->sdl_type;
452	sdl_m.sdl_index = sdl->sdl_index;
453	return (rtmsg(RTM_ADD));
454}
455
456/*
457 * Display an individual neighbor cache entry
458 */
459void
460get(host)
461	char *host;
462{
463	struct sockaddr_in6 *sin = &sin_m;
464	struct addrinfo hints, *res;
465	int gai_error;
466
467	sin_m = blank_sin;
468	bzero(&hints, sizeof(hints));
469	hints.ai_family = AF_INET6;
470	gai_error = getaddrinfo(host, NULL, &hints, &res);
471	if (gai_error) {
472		fprintf(stderr, "ndp: %s: %s\n", host,
473		    gai_strerror(gai_error));
474		return;
475	}
476	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
477	dump(&sin->sin6_addr, 0);
478	if (found_entry == 0) {
479		getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
480		    sizeof(host_buf), NULL ,0,
481		    (nflag ? NI_NUMERICHOST : 0));
482		printf("%s (%s) -- no entry\n", host, host_buf);
483		exit(1);
484	}
485}
486
487/*
488 * Delete a neighbor cache entry
489 */
490int
491delete(host)
492	char *host;
493{
494	struct sockaddr_in6 *sin = &sin_m;
495	register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
496	register char *cp = m_rtmsg.m_space;
497	struct sockaddr_dl *sdl;
498	struct addrinfo hints, *res;
499	int gai_error;
500
501	getsocket();
502	sin_m = blank_sin;
503
504	bzero(&hints, sizeof(hints));
505	hints.ai_family = AF_INET6;
506	gai_error = getaddrinfo(host, NULL, &hints, &res);
507	if (gai_error) {
508		fprintf(stderr, "ndp: %s: %s\n", host,
509		    gai_strerror(gai_error));
510		return 1;
511	}
512	sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
513	sin->sin6_scope_id =
514	    ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
515	if (rtmsg(RTM_GET) < 0) {
516		errx(1, "RTM_GET(%s) failed", host);
517		/* NOTREACHED */
518	}
519	sin = (struct sockaddr_in6 *)(rtm + 1);
520	sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
521	if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
522		if (sdl->sdl_family == AF_LINK &&
523		    !(rtm->rtm_flags & RTF_GATEWAY)) {
524			goto delete;
525		}
526		/*
527		 * IPv4 arp command retries with sin_other = SIN_PROXY here.
528		 */
529		fprintf(stderr, "delete: cannot delete non-NDP entry\n");
530		return 1;
531	}
532
533delete:
534	if (sdl->sdl_family != AF_LINK) {
535		printf("cannot locate %s\n", host);
536		return (1);
537	}
538        /*
539         * need to reinit the field because it has rt_key
540         * but we want the actual address
541         */
542	NEXTADDR(RTA_DST, sin_m);
543	rtm->rtm_flags |= RTF_LLDATA;
544	if (rtmsg(RTM_DELETE) == 0) {
545		getnameinfo((struct sockaddr *)sin,
546		    sin->sin6_len, host_buf,
547		    sizeof(host_buf), NULL, 0,
548		    (nflag ? NI_NUMERICHOST : 0));
549		printf("%s (%s) deleted\n", host, host_buf);
550	}
551
552	return 0;
553}
554
555#define W_ADDR	36
556#define W_LL	17
557#define W_IF	6
558
559/*
560 * Dump the entire neighbor cache
561 */
562void
563dump(addr, cflag)
564	struct in6_addr *addr;
565	int cflag;
566{
567	int mib[6];
568	size_t needed;
569	char *lim, *buf, *next;
570	struct rt_msghdr *rtm;
571	struct sockaddr_in6 *sin;
572	struct sockaddr_dl *sdl;
573	extern int h_errno;
574	struct in6_nbrinfo *nbi;
575	struct timeval time;
576	int addrwidth;
577	int llwidth;
578	int ifwidth;
579	char flgbuf[8];
580	char *ifname;
581
582	/* Print header */
583	if (!tflag && !cflag)
584		printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n",
585		    W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address",
586		    W_IF, W_IF, "Netif", "Expire", "S", "Flags");
587
588again:;
589	mib[0] = CTL_NET;
590	mib[1] = PF_ROUTE;
591	mib[2] = 0;
592	mib[3] = AF_INET6;
593	mib[4] = NET_RT_FLAGS;
594#ifdef RTF_LLINFO
595	mib[5] = RTF_LLINFO;
596#else
597	mib[5] = 0;
598#endif
599	if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
600		err(1, "sysctl(PF_ROUTE estimate)");
601	if (needed > 0) {
602		if ((buf = malloc(needed)) == NULL)
603			err(1, "malloc");
604		if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
605			err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)");
606		lim = buf + needed;
607	} else
608		buf = lim = NULL;
609
610	for (next = buf; next && next < lim; next += rtm->rtm_msglen) {
611		int isrouter = 0, prbs = 0;
612
613		rtm = (struct rt_msghdr *)next;
614		sin = (struct sockaddr_in6 *)(rtm + 1);
615		sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len));
616
617		/*
618		 * Some OSes can produce a route that has the LINK flag but
619		 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD
620		 * and BSD/OS, where xx is not the interface identifier on
621		 * lo0).  Such routes entry would annoy getnbrinfo() below,
622		 * so we skip them.
623		 * XXX: such routes should have the GATEWAY flag, not the
624		 * LINK flag.  However, there is rotten routing software
625		 * that advertises all routes that have the GATEWAY flag.
626		 * Thus, KAME kernel intentionally does not set the LINK flag.
627		 * What is to be fixed is not ndp, but such routing software
628		 * (and the kernel workaround)...
629		 */
630		if (sdl->sdl_family != AF_LINK)
631			continue;
632
633		if (!(rtm->rtm_flags & RTF_HOST))
634			continue;
635
636		if (addr) {
637			if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr))
638				continue;
639			found_entry = 1;
640		} else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr))
641			continue;
642		if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) ||
643		    IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) {
644			/* XXX: should scope id be filled in the kernel? */
645			if (sin->sin6_scope_id == 0)
646				sin->sin6_scope_id = sdl->sdl_index;
647		}
648		getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
649		    sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0));
650		if (cflag) {
651#ifdef RTF_WASCLONED
652			if (rtm->rtm_flags & RTF_WASCLONED)
653				delete(host_buf);
654#elif defined(RTF_CLONED)
655			if (rtm->rtm_flags & RTF_CLONED)
656				delete(host_buf);
657#else
658			delete(host_buf);
659#endif
660			continue;
661		}
662		gettimeofday(&time, 0);
663		if (tflag)
664			ts_print(&time);
665
666		addrwidth = strlen(host_buf);
667		if (addrwidth < W_ADDR)
668			addrwidth = W_ADDR;
669		llwidth = strlen(ether_str(sdl));
670		if (W_ADDR + W_LL - addrwidth > llwidth)
671			llwidth = W_ADDR + W_LL - addrwidth;
672		ifname = if_indextoname(sdl->sdl_index, ifix_buf);
673		if (!ifname)
674			ifname = "?";
675		ifwidth = strlen(ifname);
676		if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth)
677			ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth;
678
679		printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf,
680		    llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname);
681
682		/* Print neighbor discovery specific informations */
683		nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1);
684		if (nbi) {
685			if (nbi->expire > time.tv_sec) {
686				printf(" %-9.9s",
687				    sec2str(nbi->expire - time.tv_sec));
688			} else if (nbi->expire == 0)
689				printf(" %-9.9s", "permanent");
690			else
691				printf(" %-9.9s", "expired");
692
693			switch (nbi->state) {
694			case ND6_LLINFO_NOSTATE:
695				 printf(" N");
696				 break;
697#ifdef ND6_LLINFO_WAITDELETE
698			case ND6_LLINFO_WAITDELETE:
699				 printf(" W");
700				 break;
701#endif
702			case ND6_LLINFO_INCOMPLETE:
703				 printf(" I");
704				 break;
705			case ND6_LLINFO_REACHABLE:
706				 printf(" R");
707				 break;
708			case ND6_LLINFO_STALE:
709				 printf(" S");
710				 break;
711			case ND6_LLINFO_DELAY:
712				 printf(" D");
713				 break;
714			case ND6_LLINFO_PROBE:
715				 printf(" P");
716				 break;
717			default:
718				 printf(" ?");
719				 break;
720			}
721
722			isrouter = nbi->isrouter;
723			prbs = nbi->asked;
724		} else {
725			warnx("failed to get neighbor information");
726			printf("  ");
727		}
728
729		/*
730		 * other flags. R: router, P: proxy, W: ??
731		 */
732		if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
733			snprintf(flgbuf, sizeof(flgbuf), "%s%s",
734			    isrouter ? "R" : "",
735			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
736		} else {
737			sin = (struct sockaddr_in6 *)
738			    (sdl->sdl_len + (char *)sdl);
739#if 0	/* W and P are mystery even for us */
740			snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s",
741			    isrouter ? "R" : "",
742			    !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "",
743			    (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "",
744			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
745#else
746			snprintf(flgbuf, sizeof(flgbuf), "%s%s",
747			    isrouter ? "R" : "",
748			    (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
749#endif
750		}
751		printf(" %s", flgbuf);
752
753		if (prbs)
754			printf(" %d", prbs);
755
756		printf("\n");
757	}
758	if (buf != NULL)
759		free(buf);
760
761	if (repeat) {
762		printf("\n");
763		fflush(stdout);
764		sleep(repeat);
765		goto again;
766	}
767}
768
769static struct in6_nbrinfo *
770getnbrinfo(addr, ifindex, warning)
771	struct in6_addr *addr;
772	int ifindex;
773	int warning;
774{
775	static struct in6_nbrinfo nbi;
776	int s;
777
778	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
779		err(1, "socket");
780
781	bzero(&nbi, sizeof(nbi));
782	if_indextoname(ifindex, nbi.ifname);
783	nbi.addr = *addr;
784	if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) {
785		if (warning)
786			warn("ioctl(SIOCGNBRINFO_IN6)");
787		close(s);
788		return(NULL);
789	}
790
791	close(s);
792	return(&nbi);
793}
794
795static char *
796ether_str(struct sockaddr_dl *sdl)
797{
798	static char hbuf[NI_MAXHOST];
799	char *cp;
800
801	if (sdl->sdl_alen == ETHER_ADDR_LEN) {
802		strlcpy(hbuf, ether_ntoa((struct ether_addr *)LLADDR(sdl)),
803		    sizeof(hbuf));
804	} else if (sdl->sdl_alen) {
805		int n = sdl->sdl_nlen > 0 ? sdl->sdl_nlen + 1 : 0;
806		snprintf(hbuf, sizeof(hbuf), "%s", link_ntoa(sdl) + n);
807	} else
808		snprintf(hbuf, sizeof(hbuf), "(incomplete)");
809
810	return(hbuf);
811}
812
813int
814ndp_ether_aton(a, n)
815	char *a;
816	u_char *n;
817{
818	int i, o[6];
819
820	i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2],
821	    &o[3], &o[4], &o[5]);
822	if (i != 6) {
823		fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a);
824		return (1);
825	}
826	for (i = 0; i < 6; i++)
827		n[i] = o[i];
828	return (0);
829}
830
831void
832usage()
833{
834	printf("usage: ndp [-nt] hostname\n");
835	printf("       ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n");
836	printf("       ndp [-nt] -A wait\n");
837	printf("       ndp [-nt] -d hostname\n");
838	printf("       ndp [-nt] -f filename\n");
839	printf("       ndp [-nt] -i interface [flags...]\n");
840#ifdef SIOCSDEFIFACE_IN6
841	printf("       ndp [-nt] -I [interface|delete]\n");
842#endif
843	printf("       ndp [-nt] -s nodename etheraddr [temp] [proxy]\n");
844	exit(1);
845}
846
847int
848rtmsg(cmd)
849	int cmd;
850{
851	static int seq;
852	int rlen;
853	register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
854	register char *cp = m_rtmsg.m_space;
855	register int l;
856
857	errno = 0;
858	if (cmd == RTM_DELETE)
859		goto doit;
860	bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
861	rtm->rtm_flags = flags;
862	rtm->rtm_version = RTM_VERSION;
863
864	switch (cmd) {
865	default:
866		fprintf(stderr, "ndp: internal wrong cmd\n");
867		exit(1);
868	case RTM_ADD:
869		rtm->rtm_addrs |= RTA_GATEWAY;
870		if (expire_time) {
871			rtm->rtm_rmx.rmx_expire = expire_time;
872			rtm->rtm_inits = RTV_EXPIRE;
873		}
874		rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA);
875#if 0 /* we don't support ipv6addr/128 type proxying */
876		if (rtm->rtm_flags & RTF_ANNOUNCE) {
877			rtm->rtm_flags &= ~RTF_HOST;
878			rtm->rtm_addrs |= RTA_NETMASK;
879		}
880#endif
881		/* FALLTHROUGH */
882	case RTM_GET:
883		rtm->rtm_addrs |= RTA_DST;
884	}
885
886	NEXTADDR(RTA_DST, sin_m);
887	NEXTADDR(RTA_GATEWAY, sdl_m);
888#if 0 /* we don't support ipv6addr/128 type proxying */
889	memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr));
890	NEXTADDR(RTA_NETMASK, so_mask);
891#endif
892
893	rtm->rtm_msglen = cp - (char *)&m_rtmsg;
894doit:
895	l = rtm->rtm_msglen;
896	rtm->rtm_seq = ++seq;
897	rtm->rtm_type = cmd;
898	if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
899		if (errno != ESRCH || cmd != RTM_DELETE) {
900			err(1, "writing to routing socket");
901			/* NOTREACHED */
902		}
903	}
904	do {
905		l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
906	} while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
907	if (l < 0)
908		(void) fprintf(stderr, "ndp: read from routing socket: %s\n",
909		    strerror(errno));
910	return (0);
911}
912
913void
914ifinfo(ifname, argc, argv)
915	char *ifname;
916	int argc;
917	char **argv;
918{
919	struct in6_ndireq nd;
920	int i, s;
921	u_int32_t newflags;
922#ifdef IPV6CTL_USETEMPADDR
923	u_int8_t nullbuf[8];
924#endif
925
926	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
927		err(1, "socket");
928		/* NOTREACHED */
929	}
930	bzero(&nd, sizeof(nd));
931	strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
932	if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
933		err(1, "ioctl(SIOCGIFINFO_IN6)");
934		/* NOTREACHED */
935	}
936#define ND nd.ndi
937	newflags = ND.flags;
938	for (i = 0; i < argc; i++) {
939		int clear = 0;
940		char *cp = argv[i];
941
942		if (*cp == '-') {
943			clear = 1;
944			cp++;
945		}
946
947#define SETFLAG(s, f) \
948	do {\
949		if (strcmp(cp, (s)) == 0) {\
950			if (clear)\
951				newflags &= ~(f);\
952			else\
953				newflags |= (f);\
954		}\
955	} while (0)
956/*
957 * XXX: this macro is not 100% correct, in that it matches "nud" against
958 *      "nudbogus".  But we just let it go since this is minor.
959 */
960#define SETVALUE(f, v) \
961	do { \
962		char *valptr; \
963		unsigned long newval; \
964		v = 0; /* unspecified */ \
965		if (strncmp(cp, f, strlen(f)) == 0) { \
966			valptr = strchr(cp, '='); \
967			if (valptr == NULL) \
968				err(1, "syntax error in %s field", (f)); \
969			errno = 0; \
970			newval = strtoul(++valptr, NULL, 0); \
971			if (errno) \
972				err(1, "syntax error in %s's value", (f)); \
973			v = newval; \
974		} \
975	} while (0)
976
977		SETFLAG("disabled", ND6_IFF_IFDISABLED);
978		SETFLAG("nud", ND6_IFF_PERFORMNUD);
979#ifdef ND6_IFF_ACCEPT_RTADV
980		SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV);
981#endif
982#ifdef ND6_IFF_AUTO_LINKLOCAL
983		SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL);
984#endif
985		SETVALUE("basereachable", ND.basereachable);
986		SETVALUE("retrans", ND.retrans);
987		SETVALUE("curhlim", ND.chlim);
988
989		ND.flags = newflags;
990		if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) {
991			err(1, "ioctl(SIOCSIFINFO_IN6)");
992			/* NOTREACHED */
993		}
994#undef SETFLAG
995#undef SETVALUE
996	}
997
998	if (!ND.initialized) {
999		errx(1, "%s: not initialized yet", ifname);
1000		/* NOTREACHED */
1001	}
1002
1003	if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
1004		err(1, "ioctl(SIOCGIFINFO_IN6)");
1005		/* NOTREACHED */
1006	}
1007	printf("linkmtu=%d", ND.linkmtu);
1008	printf(", maxmtu=%d", ND.maxmtu);
1009	printf(", curhlim=%d", ND.chlim);
1010	printf(", basereachable=%ds%dms",
1011	    ND.basereachable / 1000, ND.basereachable % 1000);
1012	printf(", reachable=%ds", ND.reachable);
1013	printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
1014#ifdef IPV6CTL_USETEMPADDR
1015	memset(nullbuf, 0, sizeof(nullbuf));
1016	if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) {
1017		int j;
1018		u_int8_t *rbuf;
1019
1020		for (i = 0; i < 3; i++) {
1021			switch (i) {
1022			case 0:
1023				printf("\nRandom seed(0): ");
1024				rbuf = ND.randomseed0;
1025				break;
1026			case 1:
1027				printf("\nRandom seed(1): ");
1028				rbuf = ND.randomseed1;
1029				break;
1030			case 2:
1031				printf("\nRandom ID:      ");
1032				rbuf = ND.randomid;
1033				break;
1034			default:
1035				errx(1, "impossible case for tempaddr display");
1036			}
1037			for (j = 0; j < 8; j++)
1038				printf("%02x", rbuf[j]);
1039		}
1040	}
1041#endif
1042	if (ND.flags) {
1043		printf("\nFlags: ");
1044#ifdef ND6_IFF_IFDISABLED
1045		if ((ND.flags & ND6_IFF_IFDISABLED))
1046			printf("disabled ");
1047#endif
1048		if ((ND.flags & ND6_IFF_PERFORMNUD))
1049			printf("nud ");
1050#ifdef ND6_IFF_ACCEPT_RTADV
1051		if ((ND.flags & ND6_IFF_ACCEPT_RTADV))
1052			printf("accept_rtadv ");
1053#endif
1054#ifdef ND6_IFF_AUTO_LINKLOCAL
1055		if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL))
1056			printf("auto_linklocal ");
1057#endif
1058	}
1059	putc('\n', stdout);
1060#undef ND
1061
1062	close(s);
1063}
1064
1065#ifndef ND_RA_FLAG_RTPREF_MASK	/* XXX: just for compilation on *BSD release */
1066#define ND_RA_FLAG_RTPREF_MASK	0x18 /* 00011000 */
1067#endif
1068
1069void
1070rtrlist()
1071{
1072#ifdef ICMPV6CTL_ND6_DRLIST
1073	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST };
1074	char *buf;
1075	struct in6_defrouter *p, *ep;
1076	size_t l;
1077	struct timeval time;
1078
1079	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1080		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1081		/*NOTREACHED*/
1082	}
1083	if (l == 0)
1084		return;
1085	buf = malloc(l);
1086	if (!buf) {
1087		err(1, "malloc");
1088		/*NOTREACHED*/
1089	}
1090	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1091		err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1092		/*NOTREACHED*/
1093	}
1094
1095	ep = (struct in6_defrouter *)(buf + l);
1096	for (p = (struct in6_defrouter *)buf; p < ep; p++) {
1097		int rtpref;
1098
1099		if (getnameinfo((struct sockaddr *)&p->rtaddr,
1100		    p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0,
1101		    (nflag ? NI_NUMERICHOST : 0)) != 0)
1102			strlcpy(host_buf, "?", sizeof(host_buf));
1103
1104		printf("%s if=%s", host_buf,
1105		    if_indextoname(p->if_index, ifix_buf));
1106		printf(", flags=%s%s",
1107		    p->flags & ND_RA_FLAG_MANAGED ? "M" : "",
1108		    p->flags & ND_RA_FLAG_OTHER   ? "O" : "");
1109		rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff;
1110		printf(", pref=%s", rtpref_str[rtpref]);
1111
1112		gettimeofday(&time, 0);
1113		if (p->expire == 0)
1114			printf(", expire=Never\n");
1115		else
1116			printf(", expire=%s\n",
1117			    sec2str(p->expire - time.tv_sec));
1118	}
1119	free(buf);
1120#else
1121	struct in6_drlist dr;
1122	int s, i;
1123	struct timeval time;
1124
1125	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1126		err(1, "socket");
1127		/* NOTREACHED */
1128	}
1129	bzero(&dr, sizeof(dr));
1130	strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */
1131	if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
1132		err(1, "ioctl(SIOCGDRLST_IN6)");
1133		/* NOTREACHED */
1134	}
1135#define DR dr.defrouter[i]
1136	for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) {
1137		struct sockaddr_in6 sin6;
1138
1139		bzero(&sin6, sizeof(sin6));
1140		sin6.sin6_family = AF_INET6;
1141		sin6.sin6_len = sizeof(sin6);
1142		sin6.sin6_addr = DR.rtaddr;
1143		getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf,
1144		    sizeof(host_buf), NULL, 0,
1145		    (nflag ? NI_NUMERICHOST : 0));
1146
1147		printf("%s if=%s", host_buf,
1148		    if_indextoname(DR.if_index, ifix_buf));
1149		printf(", flags=%s%s",
1150		    DR.flags & ND_RA_FLAG_MANAGED ? "M" : "",
1151		    DR.flags & ND_RA_FLAG_OTHER   ? "O" : "");
1152		gettimeofday(&time, 0);
1153		if (DR.expire == 0)
1154			printf(", expire=Never\n");
1155		else
1156			printf(", expire=%s\n",
1157			    sec2str(DR.expire - time.tv_sec));
1158	}
1159#undef DR
1160	close(s);
1161#endif
1162}
1163
1164void
1165plist()
1166{
1167#ifdef ICMPV6CTL_ND6_PRLIST
1168	int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST };
1169	char *buf;
1170	struct in6_prefix *p, *ep, *n;
1171	struct sockaddr_in6 *advrtr;
1172	size_t l;
1173	struct timeval time;
1174	const int niflags = NI_NUMERICHOST;
1175	int ninflags = nflag ? NI_NUMERICHOST : 0;
1176	char namebuf[NI_MAXHOST];
1177
1178	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1179		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1180		/*NOTREACHED*/
1181	}
1182	buf = malloc(l);
1183	if (!buf) {
1184		err(1, "malloc");
1185		/*NOTREACHED*/
1186	}
1187	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1188		err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1189		/*NOTREACHED*/
1190	}
1191
1192	ep = (struct in6_prefix *)(buf + l);
1193	for (p = (struct in6_prefix *)buf; p < ep; p = n) {
1194		advrtr = (struct sockaddr_in6 *)(p + 1);
1195		n = (struct in6_prefix *)&advrtr[p->advrtrs];
1196
1197		if (getnameinfo((struct sockaddr *)&p->prefix,
1198		    p->prefix.sin6_len, namebuf, sizeof(namebuf),
1199		    NULL, 0, niflags) != 0)
1200			strlcpy(namebuf, "?", sizeof(namebuf));
1201		printf("%s/%d if=%s\n", namebuf, p->prefixlen,
1202		    if_indextoname(p->if_index, ifix_buf));
1203
1204		gettimeofday(&time, 0);
1205		/*
1206		 * meaning of fields, especially flags, is very different
1207		 * by origin.  notify the difference to the users.
1208		 */
1209		printf("flags=%s%s%s%s%s",
1210		    p->raflags.onlink ? "L" : "",
1211		    p->raflags.autonomous ? "A" : "",
1212		    (p->flags & NDPRF_ONLINK) != 0 ? "O" : "",
1213		    (p->flags & NDPRF_DETACHED) != 0 ? "D" : "",
1214#ifdef NDPRF_HOME
1215		    (p->flags & NDPRF_HOME) != 0 ? "H" : ""
1216#else
1217		    ""
1218#endif
1219		    );
1220		if (p->vltime == ND6_INFINITE_LIFETIME)
1221			printf(" vltime=infinity");
1222		else
1223			printf(" vltime=%lu", (unsigned long)p->vltime);
1224		if (p->pltime == ND6_INFINITE_LIFETIME)
1225			printf(", pltime=infinity");
1226		else
1227			printf(", pltime=%lu", (unsigned long)p->pltime);
1228		if (p->expire == 0)
1229			printf(", expire=Never");
1230		else if (p->expire >= time.tv_sec)
1231			printf(", expire=%s",
1232			    sec2str(p->expire - time.tv_sec));
1233		else
1234			printf(", expired");
1235		printf(", ref=%d", p->refcnt);
1236		printf("\n");
1237		/*
1238		 * "advertising router" list is meaningful only if the prefix
1239		 * information is from RA.
1240		 */
1241		if (p->advrtrs) {
1242			int j;
1243			struct sockaddr_in6 *sin6;
1244
1245			sin6 = advrtr;
1246			printf("  advertised by\n");
1247			for (j = 0; j < p->advrtrs; j++) {
1248				struct in6_nbrinfo *nbi;
1249
1250				if (getnameinfo((struct sockaddr *)sin6,
1251				    sin6->sin6_len, namebuf, sizeof(namebuf),
1252				    NULL, 0, ninflags) != 0)
1253					strlcpy(namebuf, "?", sizeof(namebuf));
1254				printf("    %s", namebuf);
1255
1256				nbi = getnbrinfo(&sin6->sin6_addr,
1257				    p->if_index, 0);
1258				if (nbi) {
1259					switch (nbi->state) {
1260					case ND6_LLINFO_REACHABLE:
1261					case ND6_LLINFO_STALE:
1262					case ND6_LLINFO_DELAY:
1263					case ND6_LLINFO_PROBE:
1264						printf(" (reachable)\n");
1265						break;
1266					default:
1267						printf(" (unreachable)\n");
1268					}
1269				} else
1270					printf(" (no neighbor state)\n");
1271				sin6++;
1272			}
1273		} else
1274			printf("  No advertising router\n");
1275	}
1276	free(buf);
1277#else
1278	struct in6_prlist pr;
1279	int s, i;
1280	struct timeval time;
1281
1282	gettimeofday(&time, 0);
1283
1284	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1285		err(1, "socket");
1286		/* NOTREACHED */
1287	}
1288	bzero(&pr, sizeof(pr));
1289	strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */
1290	if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
1291		err(1, "ioctl(SIOCGPRLST_IN6)");
1292		/* NOTREACHED */
1293	}
1294#define PR pr.prefix[i]
1295	for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
1296		struct sockaddr_in6 p6;
1297		char namebuf[NI_MAXHOST];
1298		int niflags;
1299
1300#ifdef NDPRF_ONLINK
1301		p6 = PR.prefix;
1302#else
1303		memset(&p6, 0, sizeof(p6));
1304		p6.sin6_family = AF_INET6;
1305		p6.sin6_len = sizeof(p6);
1306		p6.sin6_addr = PR.prefix;
1307#endif
1308		niflags = NI_NUMERICHOST;
1309		if (getnameinfo((struct sockaddr *)&p6,
1310		    sizeof(p6), namebuf, sizeof(namebuf),
1311		    NULL, 0, niflags)) {
1312			warnx("getnameinfo failed");
1313			continue;
1314		}
1315		printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
1316		    if_indextoname(PR.if_index, ifix_buf));
1317
1318		gettimeofday(&time, 0);
1319		/*
1320		 * meaning of fields, especially flags, is very different
1321		 * by origin.  notify the difference to the users.
1322		 */
1323#if 0
1324		printf("  %s",
1325		    PR.origin == PR_ORIG_RA ? "" : "advertise: ");
1326#endif
1327#ifdef NDPRF_ONLINK
1328		printf("flags=%s%s%s%s%s",
1329		    PR.raflags.onlink ? "L" : "",
1330		    PR.raflags.autonomous ? "A" : "",
1331		    (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "",
1332		    (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "",
1333#ifdef NDPRF_HOME
1334		    (PR.flags & NDPRF_HOME) != 0 ? "H" : ""
1335#else
1336		    ""
1337#endif
1338		    );
1339#else
1340		printf("flags=%s%s",
1341		    PR.raflags.onlink ? "L" : "",
1342		    PR.raflags.autonomous ? "A" : "");
1343#endif
1344		if (PR.vltime == ND6_INFINITE_LIFETIME)
1345			printf(" vltime=infinity");
1346		else
1347			printf(" vltime=%lu", PR.vltime);
1348		if (PR.pltime == ND6_INFINITE_LIFETIME)
1349			printf(", pltime=infinity");
1350		else
1351			printf(", pltime=%lu", PR.pltime);
1352		if (PR.expire == 0)
1353			printf(", expire=Never");
1354		else if (PR.expire >= time.tv_sec)
1355			printf(", expire=%s",
1356			    sec2str(PR.expire - time.tv_sec));
1357		else
1358			printf(", expired");
1359#ifdef NDPRF_ONLINK
1360		printf(", ref=%d", PR.refcnt);
1361#endif
1362#if 0
1363		switch (PR.origin) {
1364		case PR_ORIG_RA:
1365			printf(", origin=RA");
1366			break;
1367		case PR_ORIG_RR:
1368			printf(", origin=RR");
1369			break;
1370		case PR_ORIG_STATIC:
1371			printf(", origin=static");
1372			break;
1373		case PR_ORIG_KERNEL:
1374			printf(", origin=kernel");
1375			break;
1376		default:
1377			printf(", origin=?");
1378			break;
1379		}
1380#endif
1381		printf("\n");
1382		/*
1383		 * "advertising router" list is meaningful only if the prefix
1384		 * information is from RA.
1385		 */
1386		if (0 &&	/* prefix origin is almost obsolted */
1387		    PR.origin != PR_ORIG_RA)
1388			;
1389		else if (PR.advrtrs) {
1390			int j;
1391			printf("  advertised by\n");
1392			for (j = 0; j < PR.advrtrs; j++) {
1393				struct sockaddr_in6 sin6;
1394				struct in6_nbrinfo *nbi;
1395
1396				bzero(&sin6, sizeof(sin6));
1397				sin6.sin6_family = AF_INET6;
1398				sin6.sin6_len = sizeof(sin6);
1399				sin6.sin6_addr = PR.advrtr[j];
1400				sin6.sin6_scope_id = PR.if_index; /* XXX */
1401				getnameinfo((struct sockaddr *)&sin6,
1402				    sin6.sin6_len, host_buf,
1403				    sizeof(host_buf), NULL, 0,
1404				    (nflag ? NI_NUMERICHOST : 0));
1405				printf("    %s", host_buf);
1406
1407				nbi = getnbrinfo(&sin6.sin6_addr,
1408				    PR.if_index, 0);
1409				if (nbi) {
1410					switch (nbi->state) {
1411					case ND6_LLINFO_REACHABLE:
1412					case ND6_LLINFO_STALE:
1413					case ND6_LLINFO_DELAY:
1414					case ND6_LLINFO_PROBE:
1415						 printf(" (reachable)\n");
1416						 break;
1417					default:
1418						 printf(" (unreachable)\n");
1419					}
1420				} else
1421					printf(" (no neighbor state)\n");
1422			}
1423			if (PR.advrtrs > DRLSTSIZ)
1424				printf("    and %d routers\n",
1425				    PR.advrtrs - DRLSTSIZ);
1426		} else
1427			printf("  No advertising router\n");
1428	}
1429#undef PR
1430	close(s);
1431#endif
1432}
1433
1434void
1435pfx_flush()
1436{
1437	char dummyif[IFNAMSIZ+8];
1438	int s;
1439
1440	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1441		err(1, "socket");
1442	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1443	if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
1444		err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
1445}
1446
1447void
1448rtr_flush()
1449{
1450	char dummyif[IFNAMSIZ+8];
1451	int s;
1452
1453	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1454		err(1, "socket");
1455	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1456	if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
1457		err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
1458
1459	close(s);
1460}
1461
1462void
1463harmonize_rtr()
1464{
1465	char dummyif[IFNAMSIZ+8];
1466	int s;
1467
1468	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1469		err(1, "socket");
1470	strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1471	if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
1472		err(1, "ioctl(SIOCSNDFLUSH_IN6)");
1473
1474	close(s);
1475}
1476
1477#ifdef SIOCSDEFIFACE_IN6	/* XXX: check SIOCGDEFIFACE_IN6 as well? */
1478static void
1479setdefif(ifname)
1480	char *ifname;
1481{
1482	struct in6_ndifreq ndifreq;
1483	unsigned int ifindex;
1484
1485	if (strcasecmp(ifname, "delete") == 0)
1486		ifindex = 0;
1487	else {
1488		if ((ifindex = if_nametoindex(ifname)) == 0)
1489			err(1, "failed to resolve i/f index for %s", ifname);
1490	}
1491
1492	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1493		err(1, "socket");
1494
1495	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1496	ndifreq.ifindex = ifindex;
1497
1498	if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1499		err(1, "ioctl(SIOCSDEFIFACE_IN6)");
1500
1501	close(s);
1502}
1503
1504static void
1505getdefif()
1506{
1507	struct in6_ndifreq ndifreq;
1508	char ifname[IFNAMSIZ+8];
1509
1510	if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1511		err(1, "socket");
1512
1513	memset(&ndifreq, 0, sizeof(ndifreq));
1514	strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1515
1516	if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1517		err(1, "ioctl(SIOCGDEFIFACE_IN6)");
1518
1519	if (ndifreq.ifindex == 0)
1520		printf("No default interface.\n");
1521	else {
1522		if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL)
1523			err(1, "failed to resolve ifname for index %lu",
1524			    ndifreq.ifindex);
1525		printf("ND default interface = %s\n", ifname);
1526	}
1527
1528	close(s);
1529}
1530#endif
1531
1532static char *
1533sec2str(total)
1534	time_t total;
1535{
1536	static char result[256];
1537	int days, hours, mins, secs;
1538	int first = 1;
1539	char *p = result;
1540	char *ep = &result[sizeof(result)];
1541	int n;
1542
1543	days = total / 3600 / 24;
1544	hours = (total / 3600) % 24;
1545	mins = (total / 60) % 60;
1546	secs = total % 60;
1547
1548	if (days) {
1549		first = 0;
1550		n = snprintf(p, ep - p, "%dd", days);
1551		if (n < 0 || n >= ep - p)
1552			return "?";
1553		p += n;
1554	}
1555	if (!first || hours) {
1556		first = 0;
1557		n = snprintf(p, ep - p, "%dh", hours);
1558		if (n < 0 || n >= ep - p)
1559			return "?";
1560		p += n;
1561	}
1562	if (!first || mins) {
1563		first = 0;
1564		n = snprintf(p, ep - p, "%dm", mins);
1565		if (n < 0 || n >= ep - p)
1566			return "?";
1567		p += n;
1568	}
1569	snprintf(p, ep - p, "%ds", secs);
1570
1571	return(result);
1572}
1573
1574/*
1575 * Print the timestamp
1576 * from tcpdump/util.c
1577 */
1578static void
1579ts_print(tvp)
1580	const struct timeval *tvp;
1581{
1582	int s;
1583
1584	/* Default */
1585	s = (tvp->tv_sec + thiszone) % 86400;
1586	(void)printf("%02d:%02d:%02d.%06u ",
1587	    s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec);
1588}
1589
1590#undef NEXTADDR
1591