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
31 static const char rcsid[] =
35 #include <sys/param.h>
36 #include <sys/ioctl.h>
37 #include <sys/socket.h>
47 #include <arpa/inet.h>
49 #include <netinet/in.h>
50 #include <net/if_var.h> /* for struct ifaddr */
51 #include <netinet/in_var.h>
52 #include <arpa/inet.h>
55 #include <netinet6/nd6.h> /* Define ND6_INFINITE_LIFETIME */
59 static struct in6_ifreq in6_ridreq;
60 static struct in6_aliasreq in6_addreq =
62 .ifra_lifetime = { 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME } };
63 static int ip6lifetime;
65 static void in6_fillscopeid(struct sockaddr_in6 *sin6);
66 static int prefix(void *, int);
67 static char *sec2str(time_t);
68 static int explicit_prefix = 0;
70 static char addr_buf[MAXHOSTNAMELEN *2 + 1]; /*for getnameinfo()*/
73 setifprefixlen(const char *addr, int dummy __unused, int s,
74 const struct afswtch *afp)
76 if (afp->af_getprefix != NULL)
77 afp->af_getprefix(addr, MASK);
82 setip6flags(const char *dummyaddr __unused, int flag, int dummysoc __unused,
83 const struct afswtch *afp)
85 if (afp->af_af != AF_INET6)
86 err(1, "address flags can be set only for inet6 addresses");
89 in6_addreq.ifra_flags &= ~(-flag);
91 in6_addreq.ifra_flags |= flag;
95 setip6lifetime(const char *cmd, const char *val, int s,
96 const struct afswtch *afp)
102 newval = (time_t)strtoul(val, &ep, 0);
104 errx(1, "invalid %s", cmd);
105 if (afp->af_af != AF_INET6)
106 errx(1, "%s not allowed for the AF", cmd);
107 if (strcmp(cmd, "vltime") == 0) {
108 in6_addreq.ifra_lifetime.ia6t_expire = t + newval;
109 in6_addreq.ifra_lifetime.ia6t_vltime = newval;
110 } else if (strcmp(cmd, "pltime") == 0) {
111 in6_addreq.ifra_lifetime.ia6t_preferred = t + newval;
112 in6_addreq.ifra_lifetime.ia6t_pltime = newval;
117 setip6pltime(const char *seconds, int dummy __unused, int s,
118 const struct afswtch *afp)
120 setip6lifetime("pltime", seconds, s, afp);
124 setip6vltime(const char *seconds, int dummy __unused, int s,
125 const struct afswtch *afp)
127 setip6lifetime("vltime", seconds, s, afp);
131 setip6eui64(const char *cmd, int dummy __unused, int s,
132 const struct afswtch *afp)
134 struct ifaddrs *ifap, *ifa;
135 const struct sockaddr_in6 *sin6 = NULL;
136 const struct in6_addr *lladdr = NULL;
137 struct in6_addr *in6;
139 if (afp->af_af != AF_INET6)
140 errx(EXIT_FAILURE, "%s not allowed for the AF", cmd);
141 in6 = (struct in6_addr *)&in6_addreq.ifra_addr.sin6_addr;
142 if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0)
143 errx(EXIT_FAILURE, "interface index is already filled");
144 if (getifaddrs(&ifap) != 0)
145 err(EXIT_FAILURE, "getifaddrs");
146 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
147 if (ifa->ifa_addr->sa_family == AF_INET6 &&
148 strcmp(ifa->ifa_name, name) == 0) {
149 sin6 = (const struct sockaddr_in6 *)ifa->ifa_addr;
150 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
151 lladdr = &sin6->sin6_addr;
157 errx(EXIT_FAILURE, "could not determine link local address");
159 memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8);
165 in6_fillscopeid(struct sockaddr_in6 *sin6)
167 #if defined(__KAME__) && defined(KAME_SCOPEID)
168 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
169 sin6->sin6_scope_id =
170 ntohs(*(u_int16_t *)&sin6->sin6_addr.s6_addr[2]);
171 sin6->sin6_addr.s6_addr[2] = sin6->sin6_addr.s6_addr[3] = 0;
177 in6_status(int s __unused, const struct ifaddrs *ifa)
179 struct sockaddr_in6 *sin, null_sin;
180 struct in6_ifreq ifr6;
183 struct in6_addrlifetime lifetime;
184 time_t t = time(NULL);
188 memset(&null_sin, 0, sizeof(null_sin));
190 sin = (struct sockaddr_in6 *)ifa->ifa_addr;
194 strncpy(ifr6.ifr_name, ifr.ifr_name, sizeof(ifr.ifr_name));
195 if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
196 warn("socket(AF_INET6,SOCK_DGRAM)");
199 ifr6.ifr_addr = *sin;
200 if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
201 warn("ioctl(SIOCGIFAFLAG_IN6)");
205 flags6 = ifr6.ifr_ifru.ifru_flags6;
206 memset(&lifetime, 0, sizeof(lifetime));
207 ifr6.ifr_addr = *sin;
208 if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
209 warn("ioctl(SIOCGIFALIFETIME_IN6)");
213 lifetime = ifr6.ifr_ifru.ifru_lifetime;
216 /* XXX: embedded link local addr check */
217 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
218 *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
221 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
222 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
223 if (sin->sin6_scope_id == 0)
224 sin->sin6_scope_id = ntohs(index);
226 scopeid = sin->sin6_scope_id;
228 error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
229 sizeof(addr_buf), NULL, 0, NI_NUMERICHOST);
231 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
233 printf("\tinet6 %s ", addr_buf);
235 if (ifa->ifa_flags & IFF_POINTOPOINT) {
236 sin = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
238 * some of the interfaces do not have valid destination
241 if (sin != NULL && sin->sin6_family == AF_INET6) {
244 /* XXX: embedded link local addr check */
245 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
246 *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
249 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
250 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
251 if (sin->sin6_scope_id == 0)
252 sin->sin6_scope_id = ntohs(index);
255 error = getnameinfo((struct sockaddr *)sin,
256 sin->sin6_len, addr_buf,
257 sizeof(addr_buf), NULL, 0,
260 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
262 printf("--> %s ", addr_buf);
266 sin = (struct sockaddr_in6 *)ifa->ifa_netmask;
269 printf("prefixlen %d ", prefix(&sin->sin6_addr,
270 sizeof(struct in6_addr)));
272 if ((flags6 & IN6_IFF_ANYCAST) != 0)
274 if ((flags6 & IN6_IFF_TENTATIVE) != 0)
275 printf("tentative ");
276 if ((flags6 & IN6_IFF_DUPLICATED) != 0)
277 printf("duplicated ");
278 if ((flags6 & IN6_IFF_DETACHED) != 0)
280 if ((flags6 & IN6_IFF_DEPRECATED) != 0)
281 printf("deprecated ");
282 if ((flags6 & IN6_IFF_AUTOCONF) != 0)
284 if ((flags6 & IN6_IFF_TEMPORARY) != 0)
285 printf("temporary ");
288 printf("scopeid 0x%x ", scopeid);
290 if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) {
292 if (lifetime.ia6t_preferred) {
293 printf("%s ", lifetime.ia6t_preferred < t
294 ? "0" : sec2str(lifetime.ia6t_preferred - t));
299 if (lifetime.ia6t_expire) {
300 printf("%s ", lifetime.ia6t_expire < t
301 ? "0" : sec2str(lifetime.ia6t_expire - t));
309 #define SIN6(x) ((struct sockaddr_in6 *) &(x))
310 static struct sockaddr_in6 *sin6tab[] = {
311 SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr),
312 SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr)
316 in6_getprefix(const char *plen, int which)
318 struct sockaddr_in6 *sin = sin6tab[which];
320 int len = atoi(plen);
322 if ((len < 0) || (len > 128))
323 errx(1, "%s: bad value", plen);
324 sin->sin6_len = sizeof(*sin);
326 sin->sin6_family = AF_INET6;
327 if ((len == 0) || (len == 128)) {
328 memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
331 memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
332 for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
334 *cp = 0xff << (8 - len);
338 in6_getaddr(const char *s, int which)
340 struct sockaddr_in6 *sin = sin6tab[which];
341 struct addrinfo hints, *res;
346 sin->sin6_len = sizeof(*sin);
348 sin->sin6_family = AF_INET6;
352 if((p = strrchr(s, '/')) != NULL) {
354 in6_getprefix(p + 1, MASK);
359 if (sin->sin6_family == AF_INET6) {
360 bzero(&hints, sizeof(struct addrinfo));
361 hints.ai_family = AF_INET6;
362 error = getaddrinfo(s, NULL, &hints, &res);
365 if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
366 errx(1, "%s: bad value", s);
368 bcopy(res->ai_addr, sin, res->ai_addrlen);
372 prefix(void *val, int size)
374 u_char *name = (u_char *)val;
375 int byte, bit, plen = 0;
377 for (byte = 0; byte < size; byte++, plen += 8)
378 if (name[byte] != 0xff)
382 for (bit = 7; bit != 0; bit--, plen++)
383 if (!(name[byte] & (1 << bit)))
385 for (; bit != 0; bit--)
386 if (name[byte] & (1 << bit))
389 for (; byte < size; byte++)
396 sec2str(time_t total)
398 static char result[256];
399 int days, hours, mins, secs;
404 days = total / 3600 / 24;
405 hours = (total / 3600) % 24;
406 mins = (total / 60) % 60;
411 p += sprintf(p, "%dd", days);
413 if (!first || hours) {
415 p += sprintf(p, "%dh", hours);
417 if (!first || mins) {
419 p += sprintf(p, "%dm", mins);
421 sprintf(p, "%ds", secs);
423 sprintf(result, "%lu", (unsigned long)total);
429 in6_postproc(int s, const struct afswtch *afp)
431 if (explicit_prefix == 0) {
432 /* Aggregatable address architecture defines all prefixes
433 are 64. So, it is convenient to set prefixlen to 64 if
434 it is not specified. */
435 setifprefixlen("64", 0, s, afp);
436 /* in6_getprefix("64", MASK) if MASK is available here... */
441 in6_status_tunnel(int s)
443 char src[NI_MAXHOST];
444 char dst[NI_MAXHOST];
445 struct in6_ifreq in6_ifr;
446 const struct sockaddr *sa = (const struct sockaddr *) &in6_ifr.ifr_addr;
448 memset(&in6_ifr, 0, sizeof(in6_ifr));
449 strncpy(in6_ifr.ifr_name, name, IFNAMSIZ);
451 if (ioctl(s, SIOCGIFPSRCADDR_IN6, (caddr_t)&in6_ifr) < 0)
453 if (sa->sa_family != AF_INET6)
455 in6_fillscopeid(&in6_ifr.ifr_addr);
456 if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0,
457 NI_NUMERICHOST) != 0)
460 if (ioctl(s, SIOCGIFPDSTADDR_IN6, (caddr_t)&in6_ifr) < 0)
462 if (sa->sa_family != AF_INET6)
464 in6_fillscopeid(&in6_ifr.ifr_addr);
465 if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0,
466 NI_NUMERICHOST) != 0)
469 printf("\ttunnel inet6 %s --> %s\n", src, dst);
473 in6_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
475 struct in6_aliasreq in6_addreq;
477 memset(&in6_addreq, 0, sizeof(in6_addreq));
478 strncpy(in6_addreq.ifra_name, name, IFNAMSIZ);
479 memcpy(&in6_addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
480 memcpy(&in6_addreq.ifra_dstaddr, dstres->ai_addr,
481 dstres->ai_addr->sa_len);
483 if (ioctl(s, SIOCSIFPHYADDR_IN6, &in6_addreq) < 0)
484 warn("SIOCSIFPHYADDR_IN6");
487 static struct cmd inet6_cmds[] = {
488 DEF_CMD_ARG("prefixlen", setifprefixlen),
489 DEF_CMD("anycast", IN6_IFF_ANYCAST, setip6flags),
490 DEF_CMD("tentative", IN6_IFF_TENTATIVE, setip6flags),
491 DEF_CMD("-tentative", -IN6_IFF_TENTATIVE, setip6flags),
492 DEF_CMD("deprecated", IN6_IFF_DEPRECATED, setip6flags),
493 DEF_CMD("-deprecated", -IN6_IFF_DEPRECATED, setip6flags),
494 DEF_CMD("autoconf", IN6_IFF_AUTOCONF, setip6flags),
495 DEF_CMD("-autoconf", -IN6_IFF_AUTOCONF, setip6flags),
496 DEF_CMD_ARG("pltime", setip6pltime),
497 DEF_CMD_ARG("vltime", setip6vltime),
498 DEF_CMD("eui64", 0, setip6eui64),
501 static struct afswtch af_inet6 = {
504 .af_status = in6_status,
505 .af_getaddr = in6_getaddr,
506 .af_getprefix = in6_getprefix,
507 .af_postproc = in6_postproc,
508 .af_status_tunnel = in6_status_tunnel,
509 .af_settunnel = in6_set_tunnel,
510 .af_difaddr = SIOCDIFADDR_IN6,
511 .af_aifaddr = SIOCAIFADDR_IN6,
512 .af_ridreq = &in6_addreq,
513 .af_addreq = &in6_addreq,
517 in6_Lopt_cb(const char *optarg __unused)
519 ip6lifetime++; /* print IPv6 address lifetime */
521 static struct option in6_Lopt = { .opt = "L", .opt_usage = "[-L]", .cb = in6_Lopt_cb };
523 static __constructor void
526 #define N(a) (sizeof(a) / sizeof(a[0]))
529 for (i = 0; i < N(inet6_cmds); i++)
530 cmd_register(&inet6_cmds[i]);
531 af_register(&af_inet6);
532 opt_register(&in6_Lopt);