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
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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
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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/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 __unused,
72 const struct afswtch *afp)
74 if (afp->af_getprefix != NULL)
75 afp->af_getprefix(addr, MASK);
80 setip6flags(const char *addr __unused, int flag, int s __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 __unused,
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 __unused,
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;
178 in6_status(int s __unused, const struct ifaddrs *ifa)
180 struct sockaddr_in6 *sin, null_sin;
181 struct in6_ifreq ifr6;
184 struct in6_addrlifetime lifetime;
186 int n_flags, prefixlen;
190 clock_gettime(CLOCK_MONOTONIC_FAST, &now);
192 memset(&null_sin, 0, sizeof(null_sin));
194 sin = (struct sockaddr_in6 *)ifa->ifa_addr;
198 strlcpy(ifr6.ifr_name, ifr.ifr_name, IFNAMSIZ);
199 if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
200 warn("socket(AF_INET6,SOCK_DGRAM)");
203 ifr6.ifr_addr = *sin;
204 if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
205 warn("ioctl(SIOCGIFAFLAG_IN6)");
209 flags6 = ifr6.ifr_ifru.ifru_flags6;
210 memset(&lifetime, 0, sizeof(lifetime));
211 ifr6.ifr_addr = *sin;
212 if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
213 warn("ioctl(SIOCGIFALIFETIME_IN6)");
217 lifetime = ifr6.ifr_ifru.ifru_lifetime;
220 /* XXX: embedded link local addr check */
221 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
222 *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
225 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
226 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
227 if (sin->sin6_scope_id == 0)
228 sin->sin6_scope_id = ntohs(index);
230 scopeid = sin->sin6_scope_id;
232 if (f_addr != NULL && strcmp(f_addr, "fqdn") == 0)
234 else if (f_addr != NULL && strcmp(f_addr, "host") == 0)
237 n_flags = NI_NUMERICHOST;
239 error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
240 sizeof(addr_buf), NULL, 0, n_flags);
242 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
244 printf("\tinet6 %s", addr_buf);
246 if (ifa->ifa_flags & IFF_POINTOPOINT) {
247 sin = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
249 * some of the interfaces do not have valid destination
252 if (sin != NULL && sin->sin6_family == AF_INET6) {
255 /* XXX: embedded link local addr check */
256 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
257 *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
260 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
261 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
262 if (sin->sin6_scope_id == 0)
263 sin->sin6_scope_id = ntohs(index);
266 error = getnameinfo((struct sockaddr *)sin,
267 sin->sin6_len, addr_buf,
268 sizeof(addr_buf), NULL, 0,
271 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
273 printf(" --> %s", addr_buf);
277 sin = (struct sockaddr_in6 *)ifa->ifa_netmask;
280 prefixlen = prefix(&sin->sin6_addr, sizeof(struct in6_addr));
281 if (f_inet6 != NULL && strcmp(f_inet6, "cidr") == 0)
282 printf("/%d", prefixlen);
284 printf(" prefixlen %d", prefixlen);
286 if ((flags6 & IN6_IFF_ANYCAST) != 0)
288 if ((flags6 & IN6_IFF_TENTATIVE) != 0)
289 printf(" tentative");
290 if ((flags6 & IN6_IFF_DUPLICATED) != 0)
291 printf(" duplicated");
292 if ((flags6 & IN6_IFF_DETACHED) != 0)
294 if ((flags6 & IN6_IFF_DEPRECATED) != 0)
295 printf(" deprecated");
296 if ((flags6 & IN6_IFF_AUTOCONF) != 0)
298 if ((flags6 & IN6_IFF_TEMPORARY) != 0)
299 printf(" temporary");
302 printf(" scopeid 0x%x", scopeid);
304 if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) {
306 if (lifetime.ia6t_preferred) {
307 printf(" %s", lifetime.ia6t_preferred < now.tv_sec
308 ? "0" : sec2str(lifetime.ia6t_preferred - now.tv_sec));
314 if (lifetime.ia6t_expire) {
315 printf(" %s", lifetime.ia6t_expire < now.tv_sec
316 ? "0" : sec2str(lifetime.ia6t_expire - now.tv_sec));
325 #define SIN6(x) ((struct sockaddr_in6 *) &(x))
326 static struct sockaddr_in6 *sin6tab[] = {
327 SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr),
328 SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr)
332 in6_getprefix(const char *plen, int which)
334 struct sockaddr_in6 *sin = sin6tab[which];
336 int len = atoi(plen);
338 if ((len < 0) || (len > 128))
339 errx(1, "%s: bad value", plen);
340 sin->sin6_len = sizeof(*sin);
342 sin->sin6_family = AF_INET6;
343 if ((len == 0) || (len == 128)) {
344 memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
347 memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
348 for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
350 *cp = 0xff << (8 - len);
354 in6_getaddr(const char *s, int which)
356 struct sockaddr_in6 *sin = sin6tab[which];
357 struct addrinfo hints, *res;
362 sin->sin6_len = sizeof(*sin);
364 sin->sin6_family = AF_INET6;
368 if((p = strrchr(s, '/')) != NULL) {
370 in6_getprefix(p + 1, MASK);
375 if (sin->sin6_family == AF_INET6) {
376 bzero(&hints, sizeof(struct addrinfo));
377 hints.ai_family = AF_INET6;
378 error = getaddrinfo(s, NULL, &hints, &res);
381 if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
382 errx(1, "%s: bad value", s);
384 bcopy(res->ai_addr, sin, res->ai_addrlen);
388 prefix(void *val, int size)
390 u_char *name = (u_char *)val;
391 int byte, bit, plen = 0;
393 for (byte = 0; byte < size; byte++, plen += 8)
394 if (name[byte] != 0xff)
398 for (bit = 7; bit != 0; bit--, plen++)
399 if (!(name[byte] & (1 << bit)))
401 for (; bit != 0; bit--)
402 if (name[byte] & (1 << bit))
405 for (; byte < size; byte++)
412 sec2str(time_t total)
414 static char result[256];
415 int days, hours, mins, secs;
420 days = total / 3600 / 24;
421 hours = (total / 3600) % 24;
422 mins = (total / 60) % 60;
427 p += sprintf(p, "%dd", days);
429 if (!first || hours) {
431 p += sprintf(p, "%dh", hours);
433 if (!first || mins) {
435 p += sprintf(p, "%dm", mins);
437 sprintf(p, "%ds", secs);
439 sprintf(result, "%lu", (unsigned long)total);
445 in6_postproc(int s, const struct afswtch *afp)
447 if (explicit_prefix == 0) {
448 /* Aggregatable address architecture defines all prefixes
449 are 64. So, it is convenient to set prefixlen to 64 if
450 it is not specified. */
451 setifprefixlen("64", 0, s, afp);
452 /* in6_getprefix("64", MASK) if MASK is available here... */
457 in6_status_tunnel(int s)
459 char src[NI_MAXHOST];
460 char dst[NI_MAXHOST];
461 struct in6_ifreq in6_ifr;
462 const struct sockaddr *sa = (const struct sockaddr *) &in6_ifr.ifr_addr;
464 memset(&in6_ifr, 0, sizeof(in6_ifr));
465 strlcpy(in6_ifr.ifr_name, name, IFNAMSIZ);
467 if (ioctl(s, SIOCGIFPSRCADDR_IN6, &in6_ifr) < 0)
469 if (sa->sa_family != AF_INET6)
471 in6_fillscopeid(&in6_ifr.ifr_addr);
472 if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0,
473 NI_NUMERICHOST) != 0)
476 if (ioctl(s, SIOCGIFPDSTADDR_IN6, &in6_ifr) < 0)
478 if (sa->sa_family != AF_INET6)
480 in6_fillscopeid(&in6_ifr.ifr_addr);
481 if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0,
482 NI_NUMERICHOST) != 0)
485 printf("\ttunnel inet6 %s --> %s\n", src, dst);
489 in6_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
491 struct in6_aliasreq in6_addreq;
493 memset(&in6_addreq, 0, sizeof(in6_addreq));
494 strlcpy(in6_addreq.ifra_name, name, IFNAMSIZ);
495 memcpy(&in6_addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
496 memcpy(&in6_addreq.ifra_dstaddr, dstres->ai_addr,
497 dstres->ai_addr->sa_len);
499 if (ioctl(s, SIOCSIFPHYADDR_IN6, &in6_addreq) < 0)
500 warn("SIOCSIFPHYADDR_IN6");
503 static struct cmd inet6_cmds[] = {
504 DEF_CMD_ARG("prefixlen", setifprefixlen),
505 DEF_CMD("anycast", IN6_IFF_ANYCAST, setip6flags),
506 DEF_CMD("tentative", IN6_IFF_TENTATIVE, setip6flags),
507 DEF_CMD("-tentative", -IN6_IFF_TENTATIVE, setip6flags),
508 DEF_CMD("deprecated", IN6_IFF_DEPRECATED, setip6flags),
509 DEF_CMD("-deprecated", -IN6_IFF_DEPRECATED, setip6flags),
510 DEF_CMD("autoconf", IN6_IFF_AUTOCONF, setip6flags),
511 DEF_CMD("-autoconf", -IN6_IFF_AUTOCONF, setip6flags),
512 DEF_CMD_ARG("pltime", setip6pltime),
513 DEF_CMD_ARG("vltime", setip6vltime),
514 DEF_CMD("eui64", 0, setip6eui64),
517 static struct afswtch af_inet6 = {
520 .af_status = in6_status,
521 .af_getaddr = in6_getaddr,
522 .af_getprefix = in6_getprefix,
523 .af_postproc = in6_postproc,
524 .af_status_tunnel = in6_status_tunnel,
525 .af_settunnel = in6_set_tunnel,
526 .af_difaddr = SIOCDIFADDR_IN6,
527 .af_aifaddr = SIOCAIFADDR_IN6,
528 .af_ridreq = &in6_ridreq,
529 .af_addreq = &in6_addreq,
533 in6_Lopt_cb(const char *optarg __unused)
535 ip6lifetime++; /* print IPv6 address lifetime */
537 static struct option in6_Lopt = { "L", "[-L]", in6_Lopt_cb, NULL };
545 for (i = 0; i < nitems(inet6_cmds); i++)
546 cmd_register(&inet6_cmds[i]);
547 af_register(&af_inet6);
548 opt_register(&in6_Lopt);