1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1983, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/param.h>
33#include <sys/ioctl.h>
34#include <sys/socket.h>
35#include <net/if.h>
36
37#include <err.h>
38#include <stdio.h>
39#include <stdlib.h>
40#include <string.h>
41#include <unistd.h>
42#include <time.h>
43#include <ifaddrs.h>
44
45#include <arpa/inet.h>
46
47#include <netinet/in.h>
48#include <netinet/in_var.h>
49#include <arpa/inet.h>
50#include <netdb.h>
51
52#include <netinet6/nd6.h>	/* Define ND6_INFINITE_LIFETIME */
53
54#include "ifconfig.h"
55#include "ifconfig_netlink.h"
56
57#ifndef WITHOUT_NETLINK
58struct in6_px {
59	struct in6_addr		addr;
60	int			plen;
61	bool			set;
62};
63struct in6_pdata {
64	struct in6_px		addr;
65	struct in6_px		dst_addr;
66	struct in6_addrlifetime	lifetime;
67	uint32_t		flags;
68	uint32_t		vhid;
69};
70
71static struct in6_pdata in6_del;
72static struct in6_pdata in6_add = {
73	.lifetime = { 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME },
74};
75#else
76static	struct in6_ifreq in6_ridreq;
77static	struct in6_aliasreq in6_addreq =
78  { .ifra_flags = 0,
79    .ifra_lifetime = { 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME } };
80#endif
81static	int ip6lifetime;
82
83#ifdef WITHOUT_NETLINK
84static	int prefix(void *, int);
85#endif
86static	char *sec2str(time_t);
87static	int explicit_prefix = 0;
88extern	char *f_inet6, *f_addr;
89
90extern void setnd6flags(if_ctx *, const char *, int);
91extern void setnd6defif(if_ctx *,const char *, int);
92extern void nd6_status(if_ctx *);
93
94static	char addr_buf[NI_MAXHOST];	/*for getnameinfo()*/
95
96static void
97setifprefixlen(if_ctx *ctx __netlink_unused, const char *addr, int dummy __unused)
98{
99#ifdef WITHOUT_NETLINK
100	const struct afswtch *afp = ctx->afp;
101
102        if (afp->af_getprefix != NULL)
103                afp->af_getprefix(addr, MASK);
104#else
105	int plen = strtol(addr, NULL, 10);
106
107	if ((plen < 0) || (plen > 128))
108		errx(1, "%s: bad value", addr);
109	in6_add.addr.plen = plen;
110#endif
111	explicit_prefix = 1;
112}
113
114static void
115setip6flags(if_ctx *ctx, const char *dummyaddr __unused, int flag)
116{
117	const struct afswtch *afp = ctx->afp;
118
119	if (afp->af_af != AF_INET6)
120		err(1, "address flags can be set only for inet6 addresses");
121
122#ifdef WITHOUT_NETLINK
123	if (flag < 0)
124		in6_addreq.ifra_flags &= ~(-flag);
125	else
126		in6_addreq.ifra_flags |= flag;
127#else
128	if (flag < 0)
129		in6_add.flags &= ~(-flag);
130	else
131		in6_add.flags |= flag;
132#endif
133}
134
135static void
136setip6lifetime(if_ctx *ctx, const char *cmd, const char *val)
137{
138	const struct afswtch *afp = ctx->afp;
139	struct timespec now;
140	time_t newval;
141	char *ep;
142#ifdef WITHOUT_NETLINK
143	struct in6_addrlifetime *lifetime = &in6_addreq.ifra_lifetime;
144#else
145	struct in6_addrlifetime *lifetime = &in6_add.lifetime;
146#endif
147
148	clock_gettime(CLOCK_MONOTONIC_FAST, &now);
149	newval = (time_t)strtoul(val, &ep, 0);
150	if (val == ep)
151		errx(1, "invalid %s", cmd);
152	if (afp->af_af != AF_INET6)
153		errx(1, "%s not allowed for the AF", cmd);
154	if (strcmp(cmd, "vltime") == 0) {
155		lifetime->ia6t_expire = now.tv_sec + newval;
156		lifetime->ia6t_vltime = newval;
157	} else if (strcmp(cmd, "pltime") == 0) {
158		lifetime->ia6t_preferred = now.tv_sec + newval;
159		lifetime->ia6t_pltime = newval;
160	}
161}
162
163static void
164setip6pltime(if_ctx *ctx, const char *seconds, int dummy __unused)
165{
166	setip6lifetime(ctx, "pltime", seconds);
167}
168
169static void
170setip6vltime(if_ctx *ctx, const char *seconds, int dummy __unused)
171{
172	setip6lifetime(ctx, "vltime", seconds);
173}
174
175static void
176setip6eui64(if_ctx *ctx, const char *cmd, int dummy __unused)
177{
178	const struct afswtch *afp = ctx->afp;
179	struct ifaddrs *ifap, *ifa;
180	const struct sockaddr_in6 *sin6 = NULL;
181	const struct in6_addr *lladdr = NULL;
182	struct in6_addr *in6;
183
184	if (afp->af_af != AF_INET6)
185		errx(EXIT_FAILURE, "%s not allowed for the AF", cmd);
186#ifdef WITHOUT_NETLINK
187 	in6 = (struct in6_addr *)&in6_addreq.ifra_addr.sin6_addr;
188#else
189	in6 = &in6_add.addr.addr;
190#endif
191	if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0)
192		errx(EXIT_FAILURE, "interface index is already filled");
193	if (getifaddrs(&ifap) != 0)
194		err(EXIT_FAILURE, "getifaddrs");
195	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
196		if (ifa->ifa_addr->sa_family == AF_INET6 &&
197		    strcmp(ifa->ifa_name, ctx->ifname) == 0) {
198			sin6 = (const struct sockaddr_in6 *)satosin6(ifa->ifa_addr);
199			if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
200				lladdr = &sin6->sin6_addr;
201				break;
202			}
203		}
204	}
205	if (!lladdr)
206		errx(EXIT_FAILURE, "could not determine link local address");
207
208 	memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8);
209
210	freeifaddrs(ifap);
211}
212
213static void
214print_addr(struct sockaddr_in6 *sin)
215{
216	int error, n_flags;
217
218	if (f_addr != NULL && strcmp(f_addr, "fqdn") == 0)
219		n_flags = 0;
220	else if (f_addr != NULL && strcmp(f_addr, "host") == 0)
221		n_flags = NI_NOFQDN;
222	else
223		n_flags = NI_NUMERICHOST;
224	error = getnameinfo((struct sockaddr *)sin, sin->sin6_len,
225			    addr_buf, sizeof(addr_buf), NULL, 0,
226			    n_flags);
227	if (error != 0)
228		inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
229			  sizeof(addr_buf));
230	printf("\tinet6 %s", addr_buf);
231}
232
233static void
234print_p2p(struct sockaddr_in6 *sin)
235{
236	int error;
237
238	error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
239	    sizeof(addr_buf), NULL, 0, NI_NUMERICHOST);
240
241	if (error != 0)
242		inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf, sizeof(addr_buf));
243	printf(" --> %s", addr_buf);
244}
245
246static void
247print_mask(int plen)
248{
249	if (f_inet6 != NULL && strcmp(f_inet6, "cidr") == 0)
250		printf("/%d", plen);
251	else
252		printf(" prefixlen %d", plen);
253}
254
255static void
256print_flags(int flags6)
257{
258	if ((flags6 & IN6_IFF_ANYCAST) != 0)
259		printf(" anycast");
260	if ((flags6 & IN6_IFF_TENTATIVE) != 0)
261		printf(" tentative");
262	if ((flags6 & IN6_IFF_DUPLICATED) != 0)
263		printf(" duplicated");
264	if ((flags6 & IN6_IFF_DETACHED) != 0)
265		printf(" detached");
266	if ((flags6 & IN6_IFF_DEPRECATED) != 0)
267		printf(" deprecated");
268	if ((flags6 & IN6_IFF_AUTOCONF) != 0)
269		printf(" autoconf");
270	if ((flags6 & IN6_IFF_TEMPORARY) != 0)
271		printf(" temporary");
272	if ((flags6 & IN6_IFF_PREFER_SOURCE) != 0)
273		printf(" prefer_source");
274
275}
276
277static void
278print_lifetime(const char *prepend, time_t px_time, struct timespec *now)
279{
280	printf(" %s", prepend);
281	if (px_time == 0)
282		printf(" infty");
283
284	printf(" %s", px_time < now->tv_sec ? "0" : sec2str(px_time - now->tv_sec));
285}
286
287#ifdef WITHOUT_NETLINK
288static void
289in6_status(if_ctx *ctx, const struct ifaddrs *ifa)
290{
291	struct sockaddr_in6 *sin, null_sin = {};
292	struct in6_ifreq ifr6;
293	int s6;
294	u_int32_t flags6;
295	struct in6_addrlifetime lifetime;
296
297	sin = satosin6(ifa->ifa_addr);
298	if (sin == NULL)
299		return;
300
301	strlcpy(ifr6.ifr_name, ctx->ifname, sizeof(ifr6.ifr_name));
302	if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
303		warn("socket(AF_INET6,SOCK_DGRAM)");
304		return;
305	}
306	ifr6.ifr_addr = *sin;
307	if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
308		warn("ioctl(SIOCGIFAFLAG_IN6)");
309		close(s6);
310		return;
311	}
312	flags6 = ifr6.ifr_ifru.ifru_flags6;
313	memset(&lifetime, 0, sizeof(lifetime));
314	ifr6.ifr_addr = *sin;
315	if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
316		warn("ioctl(SIOCGIFALIFETIME_IN6)");
317		close(s6);
318		return;
319	}
320	lifetime = ifr6.ifr_ifru.ifru_lifetime;
321	close(s6);
322
323	print_addr(sin);
324
325	if (ifa->ifa_flags & IFF_POINTOPOINT) {
326		sin = satosin6(ifa->ifa_dstaddr);
327		/*
328		 * some of the interfaces do not have valid destination
329		 * address.
330		 */
331		if (sin != NULL && sin->sin6_family == AF_INET6)
332			print_p2p(sin);
333	}
334
335	sin = satosin6(ifa->ifa_netmask);
336	if (sin == NULL)
337		sin = &null_sin;
338	print_mask(prefix(&sin->sin6_addr, sizeof(struct in6_addr)));
339
340	print_flags(flags6);
341
342	if ((satosin6(ifa->ifa_addr))->sin6_scope_id)
343		printf(" scopeid 0x%x",
344		    (satosin6(ifa->ifa_addr))->sin6_scope_id);
345
346	if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) {
347		struct timespec now;
348
349		clock_gettime(CLOCK_MONOTONIC_FAST, &now);
350		print_lifetime("pltime", lifetime.ia6t_preferred, &now);
351		print_lifetime("vltime", lifetime.ia6t_expire, &now);
352	}
353
354	print_vhid(ifa);
355
356	putchar('\n');
357}
358
359#else
360static void
361show_lifetime(struct ifa_cacheinfo *ci)
362{
363	struct timespec now;
364	uint32_t pl, vl;
365
366	if (ci == NULL)
367		return;
368
369	int count = ci->ifa_prefered != ND6_INFINITE_LIFETIME;
370	count += ci->ifa_valid != ND6_INFINITE_LIFETIME;
371	if (count == 0)
372		return;
373
374	pl = (ci->ifa_prefered == ND6_INFINITE_LIFETIME) ? 0 : ci->ifa_prefered;
375	vl = (ci->ifa_valid == ND6_INFINITE_LIFETIME) ? 0 : ci->ifa_valid;
376
377	clock_gettime(CLOCK_MONOTONIC_FAST, &now);
378	print_lifetime("pltime", pl + now.tv_sec, &now);
379	print_lifetime("vltime", vl + now.tv_sec, &now);
380}
381
382static void
383in6_status_nl(if_ctx *ctx __unused, if_link_t *link __unused, if_addr_t *ifa)
384{
385	int plen = ifa->ifa_prefixlen;
386	uint32_t scopeid;
387
388	if (ifa->ifa_local == NULL) {
389		/* Non-P2P address */
390		scopeid = satosin6(ifa->ifa_address)->sin6_scope_id;
391		print_addr(satosin6(ifa->ifa_address));
392	} else {
393		scopeid = satosin6(ifa->ifa_local)->sin6_scope_id;
394		print_addr(satosin6(ifa->ifa_local));
395		print_p2p(satosin6(ifa->ifa_address));
396	}
397
398	print_mask(plen);
399	print_flags(ifa->ifaf_flags);
400
401	if (scopeid != 0)
402		printf(" scopeid 0x%x", scopeid);
403
404	show_lifetime(ifa->ifa_cacheinfo);
405
406	if (ifa->ifaf_vhid != 0)
407		printf(" vhid %d", ifa->ifaf_vhid);
408
409	putchar('\n');
410}
411
412static struct in6_px *sin6tab_nl[] = {
413        &in6_del.addr,          /* RIDADDR */
414        &in6_add.addr,          /* ADDR */
415        NULL,                   /* MASK */
416        &in6_add.dst_addr,      /* DSTADDR*/
417};
418
419static void
420in6_copyaddr(if_ctx *ctx __unused, int to, int from)
421{
422	sin6tab_nl[to]->addr = sin6tab_nl[from]->addr;
423	sin6tab_nl[to]->set = sin6tab_nl[from]->set;
424}
425
426static void
427in6_getaddr(const char *addr_str, int which)
428{
429        struct in6_px *px = sin6tab_nl[which];
430
431        px->set = true;
432        px->plen = 128;
433        if (which == ADDR) {
434                char *p = NULL;
435                if((p = strrchr(addr_str, '/')) != NULL) {
436                        *p = '\0';
437                        int plen = strtol(p + 1, NULL, 10);
438			if (plen < 0 || plen > 128)
439                                errx(1, "%s: bad value", p + 1);
440                        px->plen = plen;
441                        explicit_prefix = 1;
442                }
443        }
444
445        struct addrinfo hints = { .ai_family = AF_INET6 };
446        struct addrinfo *res;
447
448        int error = getaddrinfo(addr_str, NULL, &hints, &res);
449        if (error != 0) {
450                if (inet_pton(AF_INET6, addr_str, &px->addr) != 1)
451                        errx(1, "%s: bad value", addr_str);
452        } else {
453                struct sockaddr_in6 *sin6;
454
455                sin6 = (struct sockaddr_in6 *)(void *)res->ai_addr;
456                px->addr = sin6->sin6_addr;
457                freeaddrinfo(res);
458        }
459}
460
461static int
462in6_exec_nl(if_ctx *ctx, unsigned long action, void *data)
463{
464	struct in6_pdata *pdata = (struct in6_pdata *)data;
465	struct snl_writer nw = {};
466
467	snl_init_writer(ctx->io_ss, &nw);
468	struct nlmsghdr *hdr = snl_create_msg_request(&nw, action);
469	struct ifaddrmsg *ifahdr = snl_reserve_msg_object(&nw, struct ifaddrmsg);
470
471	ifahdr->ifa_family = AF_INET6;
472	ifahdr->ifa_prefixlen = pdata->addr.plen;
473	ifahdr->ifa_index = if_nametoindex_nl(ctx->io_ss, ctx->ifname);
474
475	snl_add_msg_attr_ip6(&nw, IFA_LOCAL, &pdata->addr.addr);
476	if (action == NL_RTM_NEWADDR && pdata->dst_addr.set)
477		snl_add_msg_attr_ip6(&nw, IFA_ADDRESS, &pdata->dst_addr.addr);
478
479	struct ifa_cacheinfo ci = {
480		.ifa_prefered = pdata->lifetime.ia6t_pltime,
481		.ifa_valid =  pdata->lifetime.ia6t_vltime,
482	};
483	snl_add_msg_attr(&nw, IFA_CACHEINFO, sizeof(ci), &ci);
484
485	int off = snl_add_msg_attr_nested(&nw, IFA_FREEBSD);
486	snl_add_msg_attr_u32(&nw, IFAF_FLAGS, pdata->flags);
487	if (pdata->vhid != 0)
488		snl_add_msg_attr_u32(&nw, IFAF_VHID, pdata->vhid);
489	snl_end_attr_nested(&nw, off);
490
491	if (! (hdr = snl_finalize_msg(&nw)) || !snl_send_message(ctx->io_ss, hdr))
492		return (0);
493
494	struct snl_errmsg_data e = {};
495	snl_read_reply_code(ctx->io_ss, hdr->nlmsg_seq, &e);
496
497	return (e.error);
498}
499#endif
500
501#ifdef WITHOUT_NETLINK
502static struct	sockaddr_in6 *sin6tab[] = {
503	&in6_ridreq.ifr_addr, &in6_addreq.ifra_addr,
504	&in6_addreq.ifra_prefixmask, &in6_addreq.ifra_dstaddr
505};
506
507static void
508in6_copyaddr(if_ctx *ctx __unused, int to, int from)
509{
510	memcpy(sin6tab[to], sin6tab[from], sizeof(struct sockaddr_in6));
511}
512
513static void
514in6_getprefix(const char *plen, int which)
515{
516	struct sockaddr_in6 *sin = sin6tab[which];
517	u_char *cp;
518	int len = atoi(plen);
519
520	if ((len < 0) || (len > 128))
521		errx(1, "%s: bad value", plen);
522	sin->sin6_len = sizeof(*sin);
523	if (which != MASK)
524		sin->sin6_family = AF_INET6;
525	if ((len == 0) || (len == 128)) {
526		memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
527		return;
528	}
529	memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
530	for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
531		*cp++ = 0xff;
532	*cp = 0xff << (8 - len);
533}
534
535static void
536in6_getaddr(const char *s, int which)
537{
538	struct sockaddr_in6 *sin = sin6tab[which];
539	struct addrinfo hints, *res;
540	int error = -1;
541
542	sin->sin6_len = sizeof(*sin);
543	if (which != MASK)
544		sin->sin6_family = AF_INET6;
545
546	if (which == ADDR) {
547		char *p = NULL;
548		if((p = strrchr(s, '/')) != NULL) {
549			*p = '\0';
550			in6_getprefix(p + 1, MASK);
551			explicit_prefix = 1;
552		}
553	}
554
555	if (sin->sin6_family == AF_INET6) {
556		bzero(&hints, sizeof(struct addrinfo));
557		hints.ai_family = AF_INET6;
558		error = getaddrinfo(s, NULL, &hints, &res);
559		if (error != 0) {
560			if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
561				errx(1, "%s: bad value", s);
562		} else {
563			bcopy(res->ai_addr, sin, res->ai_addrlen);
564			freeaddrinfo(res);
565		}
566	}
567}
568
569static int
570prefix(void *val, int size)
571{
572	u_char *name = (u_char *)val;
573	int byte, bit, plen = 0;
574
575	for (byte = 0; byte < size; byte++, plen += 8)
576		if (name[byte] != 0xff)
577			break;
578	if (byte == size)
579		return (plen);
580	for (bit = 7; bit != 0; bit--, plen++)
581		if (!(name[byte] & (1 << bit)))
582			break;
583	for (; bit != 0; bit--)
584		if (name[byte] & (1 << bit))
585			return(0);
586	byte++;
587	for (; byte < size; byte++)
588		if (name[byte])
589			return(0);
590	return (plen);
591}
592#endif
593
594static char *
595sec2str(time_t total)
596{
597	static char result[256];
598	int days, hours, mins, secs;
599	int first = 1;
600	char *p = result;
601
602	if (0) {
603		days = total / 3600 / 24;
604		hours = (total / 3600) % 24;
605		mins = (total / 60) % 60;
606		secs = total % 60;
607
608		if (days) {
609			first = 0;
610			p += sprintf(p, "%dd", days);
611		}
612		if (!first || hours) {
613			first = 0;
614			p += sprintf(p, "%dh", hours);
615		}
616		if (!first || mins) {
617			first = 0;
618			p += sprintf(p, "%dm", mins);
619		}
620		sprintf(p, "%ds", secs);
621	} else
622		sprintf(result, "%lu", (unsigned long)total);
623
624	return(result);
625}
626
627static void
628in6_postproc(if_ctx *ctx, int newaddr __unused,
629    int ifflags __unused)
630{
631	if (explicit_prefix == 0) {
632		/* Aggregatable address architecture defines all prefixes
633		   are 64. So, it is convenient to set prefixlen to 64 if
634		   it is not specified. */
635		setifprefixlen(ctx, "64", 0);
636		/* in6_getprefix("64", MASK) if MASK is available here... */
637	}
638}
639
640static void
641in6_status_tunnel(if_ctx *ctx)
642{
643	char src[NI_MAXHOST];
644	char dst[NI_MAXHOST];
645	struct in6_ifreq in6_ifr;
646	const struct sockaddr *sa = (const struct sockaddr *) &in6_ifr.ifr_addr;
647
648	memset(&in6_ifr, 0, sizeof(in6_ifr));
649	strlcpy(in6_ifr.ifr_name, ctx->ifname, sizeof(in6_ifr.ifr_name));
650
651	if (ioctl_ctx(ctx, SIOCGIFPSRCADDR_IN6, (caddr_t)&in6_ifr) < 0)
652		return;
653	if (sa->sa_family != AF_INET6)
654		return;
655	if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0,
656	    NI_NUMERICHOST) != 0)
657		src[0] = '\0';
658
659	if (ioctl_ctx(ctx, SIOCGIFPDSTADDR_IN6, (caddr_t)&in6_ifr) < 0)
660		return;
661	if (sa->sa_family != AF_INET6)
662		return;
663	if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0,
664	    NI_NUMERICHOST) != 0)
665		dst[0] = '\0';
666
667	printf("\ttunnel inet6 %s --> %s\n", src, dst);
668}
669
670static void
671in6_set_tunnel(if_ctx *ctx, struct addrinfo *srcres, struct addrinfo *dstres)
672{
673	struct in6_aliasreq in6_req = {};
674
675	strlcpy(in6_req.ifra_name, ctx->ifname, sizeof(in6_req.ifra_name));
676	memcpy(&in6_req.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
677	memcpy(&in6_req.ifra_dstaddr, dstres->ai_addr,
678	    dstres->ai_addr->sa_len);
679
680	if (ioctl_ctx(ctx, SIOCSIFPHYADDR_IN6, &in6_req) < 0)
681		warn("SIOCSIFPHYADDR_IN6");
682}
683
684static void
685in6_set_vhid(int vhid)
686{
687#ifdef WITHOUT_NETLINK
688	in6_addreq.ifra_vhid = vhid;
689#else
690	in6_add.vhid = (uint32_t)vhid;
691#endif
692}
693
694static struct cmd inet6_cmds[] = {
695	DEF_CMD_ARG("prefixlen",			setifprefixlen),
696	DEF_CMD("anycast",	IN6_IFF_ANYCAST,	setip6flags),
697	DEF_CMD("tentative",	IN6_IFF_TENTATIVE,	setip6flags),
698	DEF_CMD("-tentative",	-IN6_IFF_TENTATIVE,	setip6flags),
699	DEF_CMD("deprecated",	IN6_IFF_DEPRECATED,	setip6flags),
700	DEF_CMD("-deprecated", -IN6_IFF_DEPRECATED,	setip6flags),
701	DEF_CMD("autoconf",	IN6_IFF_AUTOCONF,	setip6flags),
702	DEF_CMD("-autoconf",	-IN6_IFF_AUTOCONF,	setip6flags),
703	DEF_CMD("prefer_source",IN6_IFF_PREFER_SOURCE,	setip6flags),
704	DEF_CMD("-prefer_source",-IN6_IFF_PREFER_SOURCE,setip6flags),
705	DEF_CMD("accept_rtadv",	ND6_IFF_ACCEPT_RTADV,	setnd6flags),
706	DEF_CMD("-accept_rtadv",-ND6_IFF_ACCEPT_RTADV,	setnd6flags),
707	DEF_CMD("no_radr",	ND6_IFF_NO_RADR,	setnd6flags),
708	DEF_CMD("-no_radr",	-ND6_IFF_NO_RADR,	setnd6flags),
709	DEF_CMD("defaultif",	1,			setnd6defif),
710	DEF_CMD("-defaultif",	-1,			setnd6defif),
711	DEF_CMD("ifdisabled",	ND6_IFF_IFDISABLED,	setnd6flags),
712	DEF_CMD("-ifdisabled",	-ND6_IFF_IFDISABLED,	setnd6flags),
713	DEF_CMD("nud",		ND6_IFF_PERFORMNUD,	setnd6flags),
714	DEF_CMD("-nud",		-ND6_IFF_PERFORMNUD,	setnd6flags),
715	DEF_CMD("auto_linklocal",ND6_IFF_AUTO_LINKLOCAL,setnd6flags),
716	DEF_CMD("-auto_linklocal",-ND6_IFF_AUTO_LINKLOCAL,setnd6flags),
717	DEF_CMD("no_prefer_iface",ND6_IFF_NO_PREFER_IFACE,setnd6flags),
718	DEF_CMD("-no_prefer_iface",-ND6_IFF_NO_PREFER_IFACE,setnd6flags),
719	DEF_CMD("no_dad",	ND6_IFF_NO_DAD,		setnd6flags),
720	DEF_CMD("-no_dad",	-ND6_IFF_NO_DAD,	setnd6flags),
721	DEF_CMD_ARG("pltime",        			setip6pltime),
722	DEF_CMD_ARG("vltime",        			setip6vltime),
723	DEF_CMD("eui64",	0,			setip6eui64),
724#ifdef EXPERIMENTAL
725	DEF_CMD("ipv6_only",	ND6_IFF_IPV6_ONLY_MANUAL,setnd6flags),
726	DEF_CMD("-ipv6_only",	-ND6_IFF_IPV6_ONLY_MANUAL,setnd6flags),
727#endif
728};
729
730static struct afswtch af_inet6 = {
731	.af_name	= "inet6",
732	.af_af		= AF_INET6,
733#ifdef WITHOUT_NETLINK
734	.af_status	= in6_status,
735#else
736	.af_status	= in6_status_nl,
737#endif
738	.af_getaddr	= in6_getaddr,
739	.af_copyaddr	= in6_copyaddr,
740#ifdef WITHOUT_NETLINK
741	.af_getprefix	= in6_getprefix,
742#endif
743	.af_other_status = nd6_status,
744	.af_postproc	= in6_postproc,
745	.af_status_tunnel = in6_status_tunnel,
746	.af_settunnel	= in6_set_tunnel,
747	.af_setvhid	= in6_set_vhid,
748#ifdef WITHOUT_NETLINK
749	.af_difaddr	= SIOCDIFADDR_IN6,
750	.af_aifaddr	= SIOCAIFADDR_IN6,
751	.af_ridreq	= &in6_addreq,
752	.af_addreq	= &in6_addreq,
753	.af_exec	= af_exec_ioctl,
754#else
755	.af_difaddr	= NL_RTM_DELADDR,
756	.af_aifaddr	= NL_RTM_NEWADDR,
757	.af_ridreq	= &in6_add,
758	.af_addreq	= &in6_add,
759	.af_exec	= in6_exec_nl,
760#endif
761};
762
763static void
764in6_Lopt_cb(const char *arg __unused)
765{
766	ip6lifetime++;	/* print IPv6 address lifetime */
767}
768static struct option in6_Lopt = {
769	.opt = "L",
770	.opt_usage = "[-L]",
771	.cb = in6_Lopt_cb
772};
773
774static __constructor void
775inet6_ctor(void)
776{
777	size_t i;
778
779#ifndef RESCUE
780	if (!feature_present("inet6"))
781		return;
782#endif
783
784	for (i = 0; i < nitems(inet6_cmds);  i++)
785		cmd_register(&inet6_cmds[i]);
786	af_register(&af_inet6);
787	opt_register(&in6_Lopt);
788}
789