2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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14 * may be used to endorse or promote products derived from this software
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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>
52 #include <netinet6/nd6.h> /* Define ND6_INFINITE_LIFETIME */
56 static struct in6_ifreq in6_ridreq;
57 static struct in6_aliasreq in6_addreq =
63 { 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME } };
64 static int ip6lifetime;
66 static void in6_fillscopeid(struct sockaddr_in6 *sin6);
67 static int prefix(void *, int);
68 static char *sec2str(time_t);
69 static int explicit_prefix = 0;
71 static char addr_buf[MAXHOSTNAMELEN *2 + 1]; /*for getnameinfo()*/
74 setifprefixlen(const char *addr, int dummy __unused, int s,
75 const struct afswtch *afp)
77 if (afp->af_getprefix != NULL)
78 afp->af_getprefix(addr, MASK);
83 setip6flags(const char *dummyaddr __unused, int flag, int dummysoc __unused,
84 const struct afswtch *afp)
86 if (afp->af_af != AF_INET6)
87 err(1, "address flags can be set only for inet6 addresses");
90 in6_addreq.ifra_flags &= ~(-flag);
92 in6_addreq.ifra_flags |= flag;
96 setip6lifetime(const char *cmd, const char *val, int s,
97 const struct afswtch *afp)
103 newval = (time_t)strtoul(val, &ep, 0);
105 errx(1, "invalid %s", cmd);
106 if (afp->af_af != AF_INET6)
107 errx(1, "%s not allowed for the AF", cmd);
108 if (strcmp(cmd, "vltime") == 0) {
109 in6_addreq.ifra_lifetime.ia6t_expire = t + newval;
110 in6_addreq.ifra_lifetime.ia6t_vltime = newval;
111 } else if (strcmp(cmd, "pltime") == 0) {
112 in6_addreq.ifra_lifetime.ia6t_preferred = t + newval;
113 in6_addreq.ifra_lifetime.ia6t_pltime = newval;
118 setip6pltime(const char *seconds, int dummy __unused, int s,
119 const struct afswtch *afp)
121 setip6lifetime("pltime", seconds, s, afp);
125 setip6vltime(const char *seconds, int dummy __unused, int s,
126 const struct afswtch *afp)
128 setip6lifetime("vltime", seconds, s, afp);
132 setip6eui64(const char *cmd, int dummy __unused, int s,
133 const struct afswtch *afp)
135 struct ifaddrs *ifap, *ifa;
136 const struct sockaddr_in6 *sin6 = NULL;
137 const struct in6_addr *lladdr = NULL;
138 struct in6_addr *in6;
140 if (afp->af_af != AF_INET6)
141 errx(EXIT_FAILURE, "%s not allowed for the AF", cmd);
142 in6 = (struct in6_addr *)&in6_addreq.ifra_addr.sin6_addr;
143 if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0)
144 errx(EXIT_FAILURE, "interface index is already filled");
145 if (getifaddrs(&ifap) != 0)
146 err(EXIT_FAILURE, "getifaddrs");
147 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
148 if (ifa->ifa_addr->sa_family == AF_INET6 &&
149 strcmp(ifa->ifa_name, name) == 0) {
150 sin6 = (const struct sockaddr_in6 *)ifa->ifa_addr;
151 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
152 lladdr = &sin6->sin6_addr;
158 errx(EXIT_FAILURE, "could not determine link local address");
160 memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8);
166 in6_fillscopeid(struct sockaddr_in6 *sin6)
168 #if defined(__KAME__) && defined(KAME_SCOPEID)
169 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
170 sin6->sin6_scope_id =
171 ntohs(*(u_int16_t *)&sin6->sin6_addr.s6_addr[2]);
172 sin6->sin6_addr.s6_addr[2] = sin6->sin6_addr.s6_addr[3] = 0;
178 in6_status(int s __unused, const struct rt_addrinfo * info)
180 struct sockaddr_in6 *sin, null_sin;
181 struct in6_ifreq ifr6;
184 struct in6_addrlifetime lifetime;
185 time_t t = time(NULL);
189 memset(&null_sin, 0, sizeof(null_sin));
191 sin = (struct sockaddr_in6 *)info->rti_info[RTAX_IFA];
195 strncpy(ifr6.ifr_name, ifr.ifr_name, sizeof(ifr.ifr_name));
196 if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
197 warn("socket(AF_INET6,SOCK_DGRAM)");
200 ifr6.ifr_addr = *sin;
201 if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
202 warn("ioctl(SIOCGIFAFLAG_IN6)");
206 flags6 = ifr6.ifr_ifru.ifru_flags6;
207 memset(&lifetime, 0, sizeof(lifetime));
208 ifr6.ifr_addr = *sin;
209 if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
210 warn("ioctl(SIOCGIFALIFETIME_IN6)");
214 lifetime = ifr6.ifr_ifru.ifru_lifetime;
217 /* XXX: embedded link local addr check */
218 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
219 *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
222 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
223 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
224 if (sin->sin6_scope_id == 0)
225 sin->sin6_scope_id = ntohs(index);
227 scopeid = sin->sin6_scope_id;
229 error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
230 sizeof(addr_buf), NULL, 0, NI_NUMERICHOST);
232 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
234 printf("\tinet6 %s ", addr_buf);
236 if (flags & IFF_POINTOPOINT) {
237 /* note RTAX_BRD overlap with IFF_BROADCAST */
238 sin = (struct sockaddr_in6 *)info->rti_info[RTAX_BRD];
240 * some of the interfaces do not have valid destination
243 if (sin && sin->sin6_family == AF_INET6) {
246 /* XXX: embedded link local addr check */
247 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
248 *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
251 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
252 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
253 if (sin->sin6_scope_id == 0)
254 sin->sin6_scope_id = ntohs(index);
257 error = getnameinfo((struct sockaddr *)sin,
258 sin->sin6_len, addr_buf,
259 sizeof(addr_buf), NULL, 0,
262 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
264 printf("--> %s ", addr_buf);
268 sin = (struct sockaddr_in6 *)info->rti_info[RTAX_NETMASK];
271 printf("prefixlen %d ", prefix(&sin->sin6_addr,
272 sizeof(struct in6_addr)));
274 if ((flags6 & IN6_IFF_ANYCAST) != 0)
276 if ((flags6 & IN6_IFF_TENTATIVE) != 0)
277 printf("tentative ");
278 if ((flags6 & IN6_IFF_DUPLICATED) != 0)
279 printf("duplicated ");
280 if ((flags6 & IN6_IFF_DETACHED) != 0)
282 if ((flags6 & IN6_IFF_DEPRECATED) != 0)
283 printf("deprecated ");
284 if ((flags6 & IN6_IFF_AUTOCONF) != 0)
286 if ((flags6 & IN6_IFF_TEMPORARY) != 0)
287 printf("temporary ");
290 printf("scopeid 0x%x ", scopeid);
292 if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) {
294 if (lifetime.ia6t_preferred) {
295 printf("%s ", lifetime.ia6t_preferred < t
296 ? "0" : sec2str(lifetime.ia6t_preferred - t));
301 if (lifetime.ia6t_expire) {
302 printf("%s ", lifetime.ia6t_expire < t
303 ? "0" : sec2str(lifetime.ia6t_expire - t));
311 #define SIN6(x) ((struct sockaddr_in6 *) &(x))
312 static struct sockaddr_in6 *sin6tab[] = {
313 SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr),
314 SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr)
318 in6_getprefix(const char *plen, int which)
320 struct sockaddr_in6 *sin = sin6tab[which];
322 int len = atoi(plen);
324 if ((len < 0) || (len > 128))
325 errx(1, "%s: bad value", plen);
326 sin->sin6_len = sizeof(*sin);
328 sin->sin6_family = AF_INET6;
329 if ((len == 0) || (len == 128)) {
330 memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
333 memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
334 for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
336 *cp = 0xff << (8 - len);
340 in6_getaddr(const char *s, int which)
342 struct sockaddr_in6 *sin = sin6tab[which];
343 struct addrinfo hints, *res;
348 sin->sin6_len = sizeof(*sin);
350 sin->sin6_family = AF_INET6;
354 if((p = strrchr(s, '/')) != NULL) {
356 in6_getprefix(p + 1, MASK);
361 if (sin->sin6_family == AF_INET6) {
362 bzero(&hints, sizeof(struct addrinfo));
363 hints.ai_family = AF_INET6;
364 error = getaddrinfo(s, NULL, &hints, &res);
367 if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
368 errx(1, "%s: bad value", s);
370 bcopy(res->ai_addr, sin, res->ai_addrlen);
374 prefix(void *val, int size)
376 u_char *name = (u_char *)val;
377 int byte, bit, plen = 0;
379 for (byte = 0; byte < size; byte++, plen += 8)
380 if (name[byte] != 0xff)
384 for (bit = 7; bit != 0; bit--, plen++)
385 if (!(name[byte] & (1 << bit)))
387 for (; bit != 0; bit--)
388 if (name[byte] & (1 << bit))
391 for (; byte < size; byte++)
398 sec2str(time_t total)
400 static char result[256];
401 int days, hours, mins, secs;
406 days = total / 3600 / 24;
407 hours = (total / 3600) % 24;
408 mins = (total / 60) % 60;
413 p += sprintf(p, "%dd", days);
415 if (!first || hours) {
417 p += sprintf(p, "%dh", hours);
419 if (!first || mins) {
421 p += sprintf(p, "%dm", mins);
423 sprintf(p, "%ds", secs);
425 sprintf(result, "%lu", (unsigned long)total);
431 in6_postproc(int s, const struct afswtch *afp)
433 if (explicit_prefix == 0) {
434 /* Aggregatable address architecture defines all prefixes
435 are 64. So, it is convenient to set prefixlen to 64 if
436 it is not specified. */
437 setifprefixlen("64", 0, s, afp);
438 /* in6_getprefix("64", MASK) if MASK is available here... */
443 in6_status_tunnel(int s)
445 char src[NI_MAXHOST];
446 char dst[NI_MAXHOST];
447 struct in6_ifreq in6_ifr;
448 const struct sockaddr *sa = (const struct sockaddr *) &in6_ifr.ifr_addr;
450 memset(&in6_ifr, 0, sizeof(in6_ifr));
451 strncpy(in6_ifr.ifr_name, name, IFNAMSIZ);
453 if (ioctl(s, SIOCGIFPSRCADDR_IN6, (caddr_t)&in6_ifr) < 0)
455 if (sa->sa_family != AF_INET6)
457 in6_fillscopeid(&in6_ifr.ifr_addr);
458 if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0,
459 NI_NUMERICHOST) != 0)
462 if (ioctl(s, SIOCGIFPDSTADDR_IN6, (caddr_t)&in6_ifr) < 0)
464 if (sa->sa_family != AF_INET6)
466 in6_fillscopeid(&in6_ifr.ifr_addr);
467 if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0,
468 NI_NUMERICHOST) != 0)
471 printf("\ttunnel inet6 %s --> %s\n", src, dst);
475 in6_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
477 struct in6_aliasreq in6_addreq;
479 memset(&in6_addreq, 0, sizeof(in6_addreq));
480 strncpy(in6_addreq.ifra_name, name, IFNAMSIZ);
481 memcpy(&in6_addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
482 memcpy(&in6_addreq.ifra_dstaddr, dstres->ai_addr,
483 dstres->ai_addr->sa_len);
485 if (ioctl(s, SIOCSIFPHYADDR_IN6, &in6_addreq) < 0)
486 warn("SIOCSIFPHYADDR_IN6");
489 static struct cmd inet6_cmds[] = {
490 DEF_CMD_ARG("prefixlen", setifprefixlen),
491 DEF_CMD("anycast", IN6_IFF_ANYCAST, setip6flags),
492 DEF_CMD("tentative", IN6_IFF_TENTATIVE, setip6flags),
493 DEF_CMD("-tentative", -IN6_IFF_TENTATIVE, setip6flags),
494 DEF_CMD("deprecated", IN6_IFF_DEPRECATED, setip6flags),
495 DEF_CMD("-deprecated", -IN6_IFF_DEPRECATED, setip6flags),
496 DEF_CMD("autoconf", IN6_IFF_AUTOCONF, setip6flags),
497 DEF_CMD("-autoconf", -IN6_IFF_AUTOCONF, setip6flags),
498 DEF_CMD_ARG("pltime", setip6pltime),
499 DEF_CMD_ARG("vltime", setip6vltime),
500 DEF_CMD("eui64", 0, setip6eui64),
503 static struct afswtch af_inet6 = {
506 .af_status = in6_status,
507 .af_getaddr = in6_getaddr,
508 .af_getprefix = in6_getprefix,
509 .af_postproc = in6_postproc,
510 .af_status_tunnel = in6_status_tunnel,
511 .af_settunnel = in6_set_tunnel,
512 .af_difaddr = SIOCDIFADDR_IN6,
513 .af_aifaddr = SIOCAIFADDR_IN6,
514 .af_ridreq = &in6_addreq,
515 .af_addreq = &in6_addreq,
519 in6_Lopt_cb(const char *optarg __unused)
521 ip6lifetime++; /* print IPv6 address lifetime */
523 static struct option in6_Lopt = { "L", "[-L]", in6_Lopt_cb };
525 static __constructor(101) void
528 #define N(a) (sizeof(a) / sizeof(a[0]))
531 for (i = 0; i < N(inet6_cmds); i++)
532 cmd_register(&inet6_cmds[i]);
533 af_register(&af_inet6);
534 opt_register(&in6_Lopt);