2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/sbin/ifconfig/af_inet6.c,v 1.3 2005/06/16 19:37:09 ume Exp $
32 #include <sys/param.h>
33 #include <sys/ioctl.h>
34 #include <sys/socket.h>
36 #include <net/if_var.h> /* for struct ifaddr */
37 #include <netinet/in.h>
38 #include <netinet/in_var.h>
39 #include <netinet6/nd6.h> /* Define ND6_INFINITE_LIFETIME */
40 #include <arpa/inet.h>
53 static struct in6_ifreq in6_ridreq;
54 static struct in6_aliasreq in6_addreq =
60 { 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME } };
61 static int ip6lifetime;
63 static void in6_fillscopeid(struct sockaddr_in6 *sin6);
64 static int prefix(void *, int);
65 static char *sec2str(time_t);
66 static int explicit_prefix = 0;
68 static char addr_buf[NI_MAXHOST]; /* for getnameinfo() */
71 setifprefixlen(const char *addr, int dummy __unused, int s,
72 const struct afswtch *afp)
74 if (afp->af_getprefix != NULL)
75 afp->af_getprefix(addr, MASK);
80 setip6flags(const char *dummyaddr __unused, int flag, int dummysoc __unused,
81 const struct afswtch *afp)
83 if (afp->af_af != AF_INET6)
84 err(1, "address flags can be set only for inet6 addresses");
87 in6_addreq.ifra_flags &= ~(-flag);
89 in6_addreq.ifra_flags |= flag;
93 setip6lifetime(const char *cmd, const char *val, int s,
94 const struct afswtch *afp)
100 clock_gettime(CLOCK_MONOTONIC_FAST, &now);
101 newval = (time_t)strtoul(val, &ep, 0);
103 errx(1, "invalid %s", cmd);
104 if (afp->af_af != AF_INET6)
105 errx(1, "%s not allowed for the AF", cmd);
106 if (strcmp(cmd, "vltime") == 0) {
107 in6_addreq.ifra_lifetime.ia6t_expire = now.tv_sec + newval;
108 in6_addreq.ifra_lifetime.ia6t_vltime = newval;
109 } else if (strcmp(cmd, "pltime") == 0) {
110 in6_addreq.ifra_lifetime.ia6t_preferred = now.tv_sec + newval;
111 in6_addreq.ifra_lifetime.ia6t_pltime = newval;
116 setip6pltime(const char *seconds, int dummy __unused, int s,
117 const struct afswtch *afp)
119 setip6lifetime("pltime", seconds, s, afp);
123 setip6vltime(const char *seconds, int dummy __unused, int s,
124 const struct afswtch *afp)
126 setip6lifetime("vltime", seconds, s, afp);
130 setip6eui64(const char *cmd, int dummy __unused, int s,
131 const struct afswtch *afp)
133 struct ifaddrs *ifap, *ifa;
134 const struct sockaddr_in6 *sin6 = NULL;
135 const struct in6_addr *lladdr = NULL;
136 struct in6_addr *in6;
138 if (afp->af_af != AF_INET6)
139 errx(EXIT_FAILURE, "%s not allowed for the AF", cmd);
140 in6 = (struct in6_addr *)&in6_addreq.ifra_addr.sin6_addr;
141 if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0)
142 errx(EXIT_FAILURE, "interface index is already filled");
143 if (getifaddrs(&ifap) != 0)
144 err(EXIT_FAILURE, "getifaddrs");
145 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
146 if (ifa->ifa_addr->sa_family == AF_INET6 &&
147 strcmp(ifa->ifa_name, name) == 0) {
148 sin6 = (const struct sockaddr_in6 *)ifa->ifa_addr;
149 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
150 lladdr = &sin6->sin6_addr;
156 errx(EXIT_FAILURE, "could not determine link local address");
158 memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8);
164 in6_fillscopeid(struct sockaddr_in6 *sin6)
166 #if defined(__KAME__) && defined(KAME_SCOPEID)
167 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
168 sin6->sin6_scope_id =
169 ntohs(*(u_int16_t *)&sin6->sin6_addr.s6_addr[2]);
170 sin6->sin6_addr.s6_addr[2] = sin6->sin6_addr.s6_addr[3] = 0;
176 in6_status(int s __unused, const struct ifaddrs *ifa)
178 struct sockaddr_in6 *sin, null_sin;
179 struct in6_ifreq ifr6;
182 struct in6_addrlifetime lifetime;
184 int n_flags, prefixlen;
188 clock_gettime(CLOCK_MONOTONIC_FAST, &now);
190 memset(&null_sin, 0, sizeof(null_sin));
192 sin = (struct sockaddr_in6 *)ifa->ifa_addr;
196 strlcpy(ifr6.ifr_name, ifr.ifr_name, IFNAMSIZ);
197 if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
198 warn("socket(AF_INET6,SOCK_DGRAM)");
201 ifr6.ifr_addr = *sin;
202 if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
203 warn("ioctl(SIOCGIFAFLAG_IN6)");
207 flags6 = ifr6.ifr_ifru.ifru_flags6;
208 memset(&lifetime, 0, sizeof(lifetime));
209 ifr6.ifr_addr = *sin;
210 if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
211 warn("ioctl(SIOCGIFALIFETIME_IN6)");
215 lifetime = ifr6.ifr_ifru.ifru_lifetime;
218 /* XXX: embedded link local addr check */
219 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
220 *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
223 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
224 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
225 if (sin->sin6_scope_id == 0)
226 sin->sin6_scope_id = ntohs(index);
228 scopeid = sin->sin6_scope_id;
230 if (f_addr != NULL && strcmp(f_addr, "fqdn") == 0)
232 else if (f_addr != NULL && strcmp(f_addr, "host") == 0)
235 n_flags = NI_NUMERICHOST;
237 error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
238 sizeof(addr_buf), NULL, 0, n_flags);
240 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
242 printf("\tinet6 %s", addr_buf);
244 if (ifa->ifa_flags & IFF_POINTOPOINT) {
245 sin = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
247 * some of the interfaces do not have valid destination
250 if (sin != NULL && sin->sin6_family == AF_INET6) {
253 /* XXX: embedded link local addr check */
254 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
255 *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
258 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
259 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
260 if (sin->sin6_scope_id == 0)
261 sin->sin6_scope_id = ntohs(index);
264 error = getnameinfo((struct sockaddr *)sin,
265 sin->sin6_len, addr_buf,
266 sizeof(addr_buf), NULL, 0,
269 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
271 printf(" --> %s", addr_buf);
275 sin = (struct sockaddr_in6 *)ifa->ifa_netmask;
278 prefixlen = prefix(&sin->sin6_addr, sizeof(struct in6_addr));
279 if (f_inet6 != NULL && strcmp(f_inet6, "cidr") == 0)
280 printf("/%d", prefixlen);
282 printf(" prefixlen %d", prefixlen);
284 if ((flags6 & IN6_IFF_ANYCAST) != 0)
286 if ((flags6 & IN6_IFF_TENTATIVE) != 0)
287 printf(" tentative");
288 if ((flags6 & IN6_IFF_DUPLICATED) != 0)
289 printf(" duplicated");
290 if ((flags6 & IN6_IFF_DETACHED) != 0)
292 if ((flags6 & IN6_IFF_DEPRECATED) != 0)
293 printf(" deprecated");
294 if ((flags6 & IN6_IFF_AUTOCONF) != 0)
296 if ((flags6 & IN6_IFF_TEMPORARY) != 0)
297 printf(" temporary");
300 printf(" scopeid 0x%x", scopeid);
302 if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) {
304 if (lifetime.ia6t_preferred) {
305 printf(" %s", lifetime.ia6t_preferred < now.tv_sec
306 ? "0" : sec2str(lifetime.ia6t_preferred - now.tv_sec));
312 if (lifetime.ia6t_expire) {
313 printf(" %s", lifetime.ia6t_expire < now.tv_sec
314 ? "0" : sec2str(lifetime.ia6t_expire - now.tv_sec));
323 #define SIN6(x) ((struct sockaddr_in6 *) &(x))
324 static struct sockaddr_in6 *sin6tab[] = {
325 SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr),
326 SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr)
330 in6_getprefix(const char *plen, int which)
332 struct sockaddr_in6 *sin = sin6tab[which];
334 int len = atoi(plen);
336 if ((len < 0) || (len > 128))
337 errx(1, "%s: bad value", plen);
338 sin->sin6_len = sizeof(*sin);
340 sin->sin6_family = AF_INET6;
341 if ((len == 0) || (len == 128)) {
342 memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
345 memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
346 for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
348 *cp = 0xff << (8 - len);
352 in6_getaddr(const char *s, int which)
354 struct sockaddr_in6 *sin = sin6tab[which];
355 struct addrinfo hints, *res;
360 sin->sin6_len = sizeof(*sin);
362 sin->sin6_family = AF_INET6;
366 if((p = strrchr(s, '/')) != NULL) {
368 in6_getprefix(p + 1, MASK);
373 if (sin->sin6_family == AF_INET6) {
374 bzero(&hints, sizeof(struct addrinfo));
375 hints.ai_family = AF_INET6;
376 error = getaddrinfo(s, NULL, &hints, &res);
379 if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
380 errx(1, "%s: bad value", s);
382 bcopy(res->ai_addr, sin, res->ai_addrlen);
386 prefix(void *val, int size)
388 u_char *name = (u_char *)val;
389 int byte, bit, plen = 0;
391 for (byte = 0; byte < size; byte++, plen += 8)
392 if (name[byte] != 0xff)
396 for (bit = 7; bit != 0; bit--, plen++)
397 if (!(name[byte] & (1 << bit)))
399 for (; bit != 0; bit--)
400 if (name[byte] & (1 << bit))
403 for (; byte < size; byte++)
410 sec2str(time_t total)
412 static char result[256];
413 int days, hours, mins, secs;
418 days = total / 3600 / 24;
419 hours = (total / 3600) % 24;
420 mins = (total / 60) % 60;
425 p += sprintf(p, "%dd", days);
427 if (!first || hours) {
429 p += sprintf(p, "%dh", hours);
431 if (!first || mins) {
433 p += sprintf(p, "%dm", mins);
435 sprintf(p, "%ds", secs);
437 sprintf(result, "%lu", (unsigned long)total);
443 in6_postproc(int s, const struct afswtch *afp)
445 if (explicit_prefix == 0) {
446 /* Aggregatable address architecture defines all prefixes
447 are 64. So, it is convenient to set prefixlen to 64 if
448 it is not specified. */
449 setifprefixlen("64", 0, s, afp);
450 /* in6_getprefix("64", MASK) if MASK is available here... */
455 in6_status_tunnel(int s)
457 char src[NI_MAXHOST];
458 char dst[NI_MAXHOST];
459 struct in6_ifreq in6_ifr;
460 const struct sockaddr *sa = (const struct sockaddr *) &in6_ifr.ifr_addr;
462 memset(&in6_ifr, 0, sizeof(in6_ifr));
463 strlcpy(in6_ifr.ifr_name, name, IFNAMSIZ);
465 if (ioctl(s, SIOCGIFPSRCADDR_IN6, (caddr_t)&in6_ifr) < 0)
467 if (sa->sa_family != AF_INET6)
469 in6_fillscopeid(&in6_ifr.ifr_addr);
470 if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0,
471 NI_NUMERICHOST) != 0)
474 if (ioctl(s, SIOCGIFPDSTADDR_IN6, (caddr_t)&in6_ifr) < 0)
476 if (sa->sa_family != AF_INET6)
478 in6_fillscopeid(&in6_ifr.ifr_addr);
479 if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0,
480 NI_NUMERICHOST) != 0)
483 printf("\ttunnel inet6 %s --> %s\n", src, dst);
487 in6_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
489 struct in6_aliasreq in6_addreq;
491 memset(&in6_addreq, 0, sizeof(in6_addreq));
492 strlcpy(in6_addreq.ifra_name, name, IFNAMSIZ);
493 memcpy(&in6_addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
494 memcpy(&in6_addreq.ifra_dstaddr, dstres->ai_addr,
495 dstres->ai_addr->sa_len);
497 if (ioctl(s, SIOCSIFPHYADDR_IN6, &in6_addreq) < 0)
498 warn("SIOCSIFPHYADDR_IN6");
501 static struct cmd inet6_cmds[] = {
502 DEF_CMD_ARG("prefixlen", setifprefixlen),
503 DEF_CMD("anycast", IN6_IFF_ANYCAST, setip6flags),
504 DEF_CMD("tentative", IN6_IFF_TENTATIVE, setip6flags),
505 DEF_CMD("-tentative", -IN6_IFF_TENTATIVE, setip6flags),
506 DEF_CMD("deprecated", IN6_IFF_DEPRECATED, setip6flags),
507 DEF_CMD("-deprecated", -IN6_IFF_DEPRECATED, setip6flags),
508 DEF_CMD("autoconf", IN6_IFF_AUTOCONF, setip6flags),
509 DEF_CMD("-autoconf", -IN6_IFF_AUTOCONF, setip6flags),
510 DEF_CMD_ARG("pltime", setip6pltime),
511 DEF_CMD_ARG("vltime", setip6vltime),
512 DEF_CMD("eui64", 0, setip6eui64),
515 static struct afswtch af_inet6 = {
518 .af_status = in6_status,
519 .af_getaddr = in6_getaddr,
520 .af_getprefix = in6_getprefix,
521 .af_postproc = in6_postproc,
522 .af_status_tunnel = in6_status_tunnel,
523 .af_settunnel = in6_set_tunnel,
524 .af_difaddr = SIOCDIFADDR_IN6,
525 .af_aifaddr = SIOCAIFADDR_IN6,
526 .af_ridreq = &in6_ridreq,
527 .af_addreq = &in6_addreq,
531 in6_Lopt_cb(const char *optarg __unused)
533 ip6lifetime++; /* print IPv6 address lifetime */
535 static struct option in6_Lopt = { "L", "[-L]", in6_Lopt_cb, NULL };
537 static __constructor(101) void
542 for (i = 0; i < nitems(inet6_cmds); i++)
543 cmd_register(&inet6_cmds[i]);
544 af_register(&af_inet6);
545 opt_register(&in6_Lopt);