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 * 4. 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
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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/route.h> /* for RTX_IFA */
45 #include <arpa/inet.h>
47 #include <netinet/in.h>
48 #include <net/if_var.h> /* for struct ifaddr */
49 #include <netinet/in_var.h>
50 #include <arpa/inet.h>
53 #include <netinet6/nd6.h> /* Define ND6_INFINITE_LIFETIME */
57 static struct in6_ifreq in6_ridreq;
58 static struct in6_aliasreq in6_addreq =
64 { 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME } };
65 static int ip6lifetime;
67 static void in6_fillscopeid(struct sockaddr_in6 *sin6);
68 static int prefix(void *, int);
69 static char *sec2str(time_t);
70 static int explicit_prefix = 0;
72 static char addr_buf[MAXHOSTNAMELEN *2 + 1]; /*for getnameinfo()*/
75 setifprefixlen(const char *addr, int dummy __unused, int s,
76 const struct afswtch *afp)
78 if (afp->af_getprefix != NULL)
79 afp->af_getprefix(addr, MASK);
84 setip6flags(const char *dummyaddr __unused, int flag, int dummysoc __unused,
85 const struct afswtch *afp)
87 if (afp->af_af != AF_INET6)
88 err(1, "address flags can be set only for inet6 addresses");
91 in6_addreq.ifra_flags &= ~(-flag);
93 in6_addreq.ifra_flags |= flag;
97 setip6lifetime(const char *cmd, const char *val, int s,
98 const struct afswtch *afp)
104 newval = (time_t)strtoul(val, &ep, 0);
106 errx(1, "invalid %s", cmd);
107 if (afp->af_af != AF_INET6)
108 errx(1, "%s not allowed for the AF", cmd);
109 if (strcmp(cmd, "vltime") == 0) {
110 in6_addreq.ifra_lifetime.ia6t_expire = t + newval;
111 in6_addreq.ifra_lifetime.ia6t_vltime = newval;
112 } else if (strcmp(cmd, "pltime") == 0) {
113 in6_addreq.ifra_lifetime.ia6t_preferred = t + newval;
114 in6_addreq.ifra_lifetime.ia6t_pltime = newval;
119 setip6pltime(const char *seconds, int dummy __unused, int s,
120 const struct afswtch *afp)
122 setip6lifetime("pltime", seconds, s, afp);
126 setip6vltime(const char *seconds, int dummy __unused, int s,
127 const struct afswtch *afp)
129 setip6lifetime("vltime", seconds, s, afp);
133 setip6eui64(const char *cmd, int dummy __unused, int s,
134 const struct afswtch *afp)
136 struct ifaddrs *ifap, *ifa;
137 const struct sockaddr_in6 *sin6 = NULL;
138 const struct in6_addr *lladdr = NULL;
139 struct in6_addr *in6;
141 if (afp->af_af != AF_INET6)
142 errx(EXIT_FAILURE, "%s not allowed for the AF", cmd);
143 in6 = (struct in6_addr *)&in6_addreq.ifra_addr.sin6_addr;
144 if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0)
145 errx(EXIT_FAILURE, "interface index is already filled");
146 if (getifaddrs(&ifap) != 0)
147 err(EXIT_FAILURE, "getifaddrs");
148 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
149 if (ifa->ifa_addr->sa_family == AF_INET6 &&
150 strcmp(ifa->ifa_name, name) == 0) {
151 sin6 = (const struct sockaddr_in6 *)ifa->ifa_addr;
152 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
153 lladdr = &sin6->sin6_addr;
159 errx(EXIT_FAILURE, "could not determine link local address");
161 memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8);
167 in6_fillscopeid(struct sockaddr_in6 *sin6)
169 #if defined(__KAME__) && defined(KAME_SCOPEID)
170 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
171 sin6->sin6_scope_id =
172 ntohs(*(u_int16_t *)&sin6->sin6_addr.s6_addr[2]);
173 sin6->sin6_addr.s6_addr[2] = sin6->sin6_addr.s6_addr[3] = 0;
179 in6_status(int s __unused, const struct rt_addrinfo * info)
181 struct sockaddr_in6 *sin, null_sin;
182 struct in6_ifreq ifr6;
185 struct in6_addrlifetime lifetime;
186 time_t t = time(NULL);
190 memset(&null_sin, 0, sizeof(null_sin));
192 sin = (struct sockaddr_in6 *)info->rti_info[RTAX_IFA];
196 strncpy(ifr6.ifr_name, ifr.ifr_name, sizeof(ifr.ifr_name));
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 error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
231 sizeof(addr_buf), NULL, 0, NI_NUMERICHOST);
233 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
235 printf("\tinet6 %s ", addr_buf);
237 if (flags & IFF_POINTOPOINT) {
238 /* note RTAX_BRD overlap with IFF_BROADCAST */
239 sin = (struct sockaddr_in6 *)info->rti_info[RTAX_BRD];
241 * some of the interfaces do not have valid destination
244 if (sin && sin->sin6_family == AF_INET6) {
247 /* XXX: embedded link local addr check */
248 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
249 *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
252 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
253 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
254 if (sin->sin6_scope_id == 0)
255 sin->sin6_scope_id = ntohs(index);
258 error = getnameinfo((struct sockaddr *)sin,
259 sin->sin6_len, addr_buf,
260 sizeof(addr_buf), NULL, 0,
263 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
265 printf("--> %s ", addr_buf);
269 sin = (struct sockaddr_in6 *)info->rti_info[RTAX_NETMASK];
272 printf("prefixlen %d ", prefix(&sin->sin6_addr,
273 sizeof(struct in6_addr)));
275 if ((flags6 & IN6_IFF_ANYCAST) != 0)
277 if ((flags6 & IN6_IFF_TENTATIVE) != 0)
278 printf("tentative ");
279 if ((flags6 & IN6_IFF_DUPLICATED) != 0)
280 printf("duplicated ");
281 if ((flags6 & IN6_IFF_DETACHED) != 0)
283 if ((flags6 & IN6_IFF_DEPRECATED) != 0)
284 printf("deprecated ");
285 if ((flags6 & IN6_IFF_AUTOCONF) != 0)
287 if ((flags6 & IN6_IFF_TEMPORARY) != 0)
288 printf("temporary ");
291 printf("scopeid 0x%x ", scopeid);
293 if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) {
295 if (lifetime.ia6t_preferred) {
296 printf("%s ", lifetime.ia6t_preferred < t
297 ? "0" : sec2str(lifetime.ia6t_preferred - t));
302 if (lifetime.ia6t_expire) {
303 printf("%s ", lifetime.ia6t_expire < t
304 ? "0" : sec2str(lifetime.ia6t_expire - t));
312 #define SIN6(x) ((struct sockaddr_in6 *) &(x))
313 static struct sockaddr_in6 *sin6tab[] = {
314 SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr),
315 SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr)
319 in6_getprefix(const char *plen, int which)
321 struct sockaddr_in6 *sin = sin6tab[which];
323 int len = atoi(plen);
325 if ((len < 0) || (len > 128))
326 errx(1, "%s: bad value", plen);
327 sin->sin6_len = sizeof(*sin);
329 sin->sin6_family = AF_INET6;
330 if ((len == 0) || (len == 128)) {
331 memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
334 memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
335 for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
337 *cp = 0xff << (8 - len);
341 in6_getaddr(const char *s, int which)
343 struct sockaddr_in6 *sin = sin6tab[which];
344 struct addrinfo hints, *res;
349 sin->sin6_len = sizeof(*sin);
351 sin->sin6_family = AF_INET6;
355 if((p = strrchr(s, '/')) != NULL) {
357 in6_getprefix(p + 1, MASK);
362 if (sin->sin6_family == AF_INET6) {
363 bzero(&hints, sizeof(struct addrinfo));
364 hints.ai_family = AF_INET6;
365 error = getaddrinfo(s, NULL, &hints, &res);
368 if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
369 errx(1, "%s: bad value", s);
371 bcopy(res->ai_addr, sin, res->ai_addrlen);
375 prefix(void *val, int size)
377 u_char *name = (u_char *)val;
378 int byte, bit, plen = 0;
380 for (byte = 0; byte < size; byte++, plen += 8)
381 if (name[byte] != 0xff)
385 for (bit = 7; bit != 0; bit--, plen++)
386 if (!(name[byte] & (1 << bit)))
388 for (; bit != 0; bit--)
389 if (name[byte] & (1 << bit))
392 for (; byte < size; byte++)
399 sec2str(time_t total)
401 static char result[256];
402 int days, hours, mins, secs;
407 days = total / 3600 / 24;
408 hours = (total / 3600) % 24;
409 mins = (total / 60) % 60;
414 p += sprintf(p, "%dd", days);
416 if (!first || hours) {
418 p += sprintf(p, "%dh", hours);
420 if (!first || mins) {
422 p += sprintf(p, "%dm", mins);
424 sprintf(p, "%ds", secs);
426 sprintf(result, "%lu", (unsigned long)total);
432 in6_postproc(int s, const struct afswtch *afp)
434 if (explicit_prefix == 0) {
435 /* Aggregatable address architecture defines all prefixes
436 are 64. So, it is convenient to set prefixlen to 64 if
437 it is not specified. */
438 setifprefixlen("64", 0, s, afp);
439 /* in6_getprefix("64", MASK) if MASK is available here... */
444 in6_status_tunnel(int s)
446 char src[NI_MAXHOST];
447 char dst[NI_MAXHOST];
448 struct in6_ifreq in6_ifr;
449 const struct sockaddr *sa = (const struct sockaddr *) &in6_ifr.ifr_addr;
451 memset(&in6_ifr, 0, sizeof(in6_ifr));
452 strncpy(in6_ifr.ifr_name, name, IFNAMSIZ);
454 if (ioctl(s, SIOCGIFPSRCADDR_IN6, (caddr_t)&in6_ifr) < 0)
456 if (sa->sa_family != AF_INET6)
458 in6_fillscopeid(&in6_ifr.ifr_addr);
459 if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0,
460 NI_NUMERICHOST) != 0)
463 if (ioctl(s, SIOCGIFPDSTADDR_IN6, (caddr_t)&in6_ifr) < 0)
465 if (sa->sa_family != AF_INET6)
467 in6_fillscopeid(&in6_ifr.ifr_addr);
468 if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0,
469 NI_NUMERICHOST) != 0)
472 printf("\ttunnel inet6 %s --> %s\n", src, dst);
476 in6_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
478 struct in6_aliasreq in6_addreq;
480 memset(&in6_addreq, 0, sizeof(in6_addreq));
481 strncpy(in6_addreq.ifra_name, name, IFNAMSIZ);
482 memcpy(&in6_addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
483 memcpy(&in6_addreq.ifra_dstaddr, dstres->ai_addr,
484 dstres->ai_addr->sa_len);
486 if (ioctl(s, SIOCSIFPHYADDR_IN6, &in6_addreq) < 0)
487 warn("SIOCSIFPHYADDR_IN6");
490 static struct cmd inet6_cmds[] = {
491 DEF_CMD_ARG("prefixlen", setifprefixlen),
492 DEF_CMD("anycast", IN6_IFF_ANYCAST, setip6flags),
493 DEF_CMD("tentative", IN6_IFF_TENTATIVE, setip6flags),
494 DEF_CMD("-tentative", -IN6_IFF_TENTATIVE, setip6flags),
495 DEF_CMD("deprecated", IN6_IFF_DEPRECATED, setip6flags),
496 DEF_CMD("-deprecated", -IN6_IFF_DEPRECATED, setip6flags),
497 DEF_CMD("autoconf", IN6_IFF_AUTOCONF, setip6flags),
498 DEF_CMD("-autoconf", -IN6_IFF_AUTOCONF, setip6flags),
499 DEF_CMD_ARG("pltime", setip6pltime),
500 DEF_CMD_ARG("vltime", setip6vltime),
501 DEF_CMD("eui64", 0, setip6eui64),
504 static struct afswtch af_inet6 = {
507 .af_status = in6_status,
508 .af_getaddr = in6_getaddr,
509 .af_getprefix = in6_getprefix,
510 .af_postproc = in6_postproc,
511 .af_status_tunnel = in6_status_tunnel,
512 .af_settunnel = in6_set_tunnel,
513 .af_difaddr = SIOCDIFADDR_IN6,
514 .af_aifaddr = SIOCAIFADDR_IN6,
515 .af_ridreq = &in6_addreq,
516 .af_addreq = &in6_addreq,
520 in6_Lopt_cb(const char *optarg __unused)
522 ip6lifetime++; /* print IPv6 address lifetime */
524 static struct option in6_Lopt = { "L", "[-L]", in6_Lopt_cb };
526 static __constructor(101) void
529 #define N(a) (sizeof(a) / sizeof(a[0]))
532 for (i = 0; i < N(inet6_cmds); i++)
533 cmd_register(&inet6_cmds[i]);
534 af_register(&af_inet6);
535 opt_register(&in6_Lopt);