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>
48 #include <arpa/inet.h>
50 #include <netinet/in.h>
51 #include <net/if_var.h> /* for struct ifaddr */
52 #include <netinet/in_var.h>
53 #include <arpa/inet.h>
56 #include <netinet6/nd6.h> /* Define ND6_INFINITE_LIFETIME */
60 static struct in6_ifreq in6_ridreq;
61 static struct in6_aliasreq in6_addreq =
63 .ifra_lifetime = { 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME } };
64 static int ip6lifetime;
66 static int prefix(void *, int);
67 static char *sec2str(time_t);
68 static int explicit_prefix = 0;
70 extern void setnd6flags(const char *, int, int, const struct afswtch *);
71 extern void setnd6defif(const char *, int, int, const struct afswtch *);
72 extern void nd6_status(int);
74 static char addr_buf[MAXHOSTNAMELEN *2 + 1]; /*for getnameinfo()*/
77 setifprefixlen(const char *addr, int dummy __unused, int s,
78 const struct afswtch *afp)
80 if (afp->af_getprefix != NULL)
81 afp->af_getprefix(addr, MASK);
86 setip6flags(const char *dummyaddr __unused, int flag, int dummysoc __unused,
87 const struct afswtch *afp)
89 if (afp->af_af != AF_INET6)
90 err(1, "address flags can be set only for inet6 addresses");
93 in6_addreq.ifra_flags &= ~(-flag);
95 in6_addreq.ifra_flags |= flag;
99 setip6lifetime(const char *cmd, const char *val, int s,
100 const struct afswtch *afp)
106 clock_gettime(CLOCK_MONOTONIC_FAST, &now);
107 newval = (time_t)strtoul(val, &ep, 0);
109 errx(1, "invalid %s", cmd);
110 if (afp->af_af != AF_INET6)
111 errx(1, "%s not allowed for the AF", cmd);
112 if (strcmp(cmd, "vltime") == 0) {
113 in6_addreq.ifra_lifetime.ia6t_expire = now.tv_sec + newval;
114 in6_addreq.ifra_lifetime.ia6t_vltime = newval;
115 } else if (strcmp(cmd, "pltime") == 0) {
116 in6_addreq.ifra_lifetime.ia6t_preferred = now.tv_sec + newval;
117 in6_addreq.ifra_lifetime.ia6t_pltime = newval;
122 setip6pltime(const char *seconds, int dummy __unused, int s,
123 const struct afswtch *afp)
125 setip6lifetime("pltime", seconds, s, afp);
129 setip6vltime(const char *seconds, int dummy __unused, int s,
130 const struct afswtch *afp)
132 setip6lifetime("vltime", seconds, s, afp);
136 setip6eui64(const char *cmd, int dummy __unused, int s,
137 const struct afswtch *afp)
139 struct ifaddrs *ifap, *ifa;
140 const struct sockaddr_in6 *sin6 = NULL;
141 const struct in6_addr *lladdr = NULL;
142 struct in6_addr *in6;
144 if (afp->af_af != AF_INET6)
145 errx(EXIT_FAILURE, "%s not allowed for the AF", cmd);
146 in6 = (struct in6_addr *)&in6_addreq.ifra_addr.sin6_addr;
147 if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0)
148 errx(EXIT_FAILURE, "interface index is already filled");
149 if (getifaddrs(&ifap) != 0)
150 err(EXIT_FAILURE, "getifaddrs");
151 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
152 if (ifa->ifa_addr->sa_family == AF_INET6 &&
153 strcmp(ifa->ifa_name, name) == 0) {
154 sin6 = (const struct sockaddr_in6 *)ifa->ifa_addr;
155 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
156 lladdr = &sin6->sin6_addr;
162 errx(EXIT_FAILURE, "could not determine link local address");
164 memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8);
170 in6_status(int s __unused, const struct ifaddrs *ifa)
172 struct sockaddr_in6 *sin, null_sin;
173 struct in6_ifreq ifr6;
176 struct in6_addrlifetime lifetime;
180 clock_gettime(CLOCK_MONOTONIC_FAST, &now);
182 memset(&null_sin, 0, sizeof(null_sin));
184 sin = (struct sockaddr_in6 *)ifa->ifa_addr;
188 strncpy(ifr6.ifr_name, ifr.ifr_name, sizeof(ifr.ifr_name));
189 if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
190 warn("socket(AF_INET6,SOCK_DGRAM)");
193 ifr6.ifr_addr = *sin;
194 if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
195 warn("ioctl(SIOCGIFAFLAG_IN6)");
199 flags6 = ifr6.ifr_ifru.ifru_flags6;
200 memset(&lifetime, 0, sizeof(lifetime));
201 ifr6.ifr_addr = *sin;
202 if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
203 warn("ioctl(SIOCGIFALIFETIME_IN6)");
207 lifetime = ifr6.ifr_ifru.ifru_lifetime;
210 error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
211 sizeof(addr_buf), NULL, 0, NI_NUMERICHOST);
213 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
215 printf("\tinet6 %s ", addr_buf);
217 if (ifa->ifa_flags & IFF_POINTOPOINT) {
218 sin = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
220 * some of the interfaces do not have valid destination
223 if (sin != NULL && sin->sin6_family == AF_INET6) {
226 error = getnameinfo((struct sockaddr *)sin,
227 sin->sin6_len, addr_buf,
228 sizeof(addr_buf), NULL, 0,
231 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
233 printf("--> %s ", addr_buf);
237 sin = (struct sockaddr_in6 *)ifa->ifa_netmask;
240 printf("prefixlen %d ", prefix(&sin->sin6_addr,
241 sizeof(struct in6_addr)));
243 if ((flags6 & IN6_IFF_ANYCAST) != 0)
245 if ((flags6 & IN6_IFF_TENTATIVE) != 0)
246 printf("tentative ");
247 if ((flags6 & IN6_IFF_DUPLICATED) != 0)
248 printf("duplicated ");
249 if ((flags6 & IN6_IFF_DETACHED) != 0)
251 if ((flags6 & IN6_IFF_DEPRECATED) != 0)
252 printf("deprecated ");
253 if ((flags6 & IN6_IFF_AUTOCONF) != 0)
255 if ((flags6 & IN6_IFF_TEMPORARY) != 0)
256 printf("temporary ");
257 if ((flags6 & IN6_IFF_PREFER_SOURCE) != 0)
258 printf("prefer_source ");
260 if (((struct sockaddr_in6 *)(ifa->ifa_addr))->sin6_scope_id)
261 printf("scopeid 0x%x ",
262 ((struct sockaddr_in6 *)(ifa->ifa_addr))->sin6_scope_id);
264 if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) {
266 if (lifetime.ia6t_preferred) {
267 printf("%s ", lifetime.ia6t_preferred < now.tv_sec
268 ? "0" : sec2str(lifetime.ia6t_preferred - now.tv_sec));
273 if (lifetime.ia6t_expire) {
274 printf("%s ", lifetime.ia6t_expire < now.tv_sec
275 ? "0" : sec2str(lifetime.ia6t_expire - now.tv_sec));
280 print_vhid(ifa, " ");
285 #define SIN6(x) ((struct sockaddr_in6 *) &(x))
286 static struct sockaddr_in6 *sin6tab[] = {
287 SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr),
288 SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr)
292 in6_getprefix(const char *plen, int which)
294 struct sockaddr_in6 *sin = sin6tab[which];
296 int len = atoi(plen);
298 if ((len < 0) || (len > 128))
299 errx(1, "%s: bad value", plen);
300 sin->sin6_len = sizeof(*sin);
302 sin->sin6_family = AF_INET6;
303 if ((len == 0) || (len == 128)) {
304 memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
307 memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
308 for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
310 *cp = 0xff << (8 - len);
314 in6_getaddr(const char *s, int which)
316 struct sockaddr_in6 *sin = sin6tab[which];
317 struct addrinfo hints, *res;
322 sin->sin6_len = sizeof(*sin);
324 sin->sin6_family = AF_INET6;
328 if((p = strrchr(s, '/')) != NULL) {
330 in6_getprefix(p + 1, MASK);
335 if (sin->sin6_family == AF_INET6) {
336 bzero(&hints, sizeof(struct addrinfo));
337 hints.ai_family = AF_INET6;
338 error = getaddrinfo(s, NULL, &hints, &res);
341 if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
342 errx(1, "%s: bad value", s);
344 bcopy(res->ai_addr, sin, res->ai_addrlen);
348 prefix(void *val, int size)
350 u_char *name = (u_char *)val;
351 int byte, bit, plen = 0;
353 for (byte = 0; byte < size; byte++, plen += 8)
354 if (name[byte] != 0xff)
358 for (bit = 7; bit != 0; bit--, plen++)
359 if (!(name[byte] & (1 << bit)))
361 for (; bit != 0; bit--)
362 if (name[byte] & (1 << bit))
365 for (; byte < size; byte++)
372 sec2str(time_t total)
374 static char result[256];
375 int days, hours, mins, secs;
380 days = total / 3600 / 24;
381 hours = (total / 3600) % 24;
382 mins = (total / 60) % 60;
387 p += sprintf(p, "%dd", days);
389 if (!first || hours) {
391 p += sprintf(p, "%dh", hours);
393 if (!first || mins) {
395 p += sprintf(p, "%dm", mins);
397 sprintf(p, "%ds", secs);
399 sprintf(result, "%lu", (unsigned long)total);
405 in6_postproc(int s, const struct afswtch *afp)
407 if (explicit_prefix == 0) {
408 /* Aggregatable address architecture defines all prefixes
409 are 64. So, it is convenient to set prefixlen to 64 if
410 it is not specified. */
411 setifprefixlen("64", 0, s, afp);
412 /* in6_getprefix("64", MASK) if MASK is available here... */
417 in6_status_tunnel(int s)
419 char src[NI_MAXHOST];
420 char dst[NI_MAXHOST];
421 struct in6_ifreq in6_ifr;
422 const struct sockaddr *sa = (const struct sockaddr *) &in6_ifr.ifr_addr;
424 memset(&in6_ifr, 0, sizeof(in6_ifr));
425 strncpy(in6_ifr.ifr_name, name, IFNAMSIZ);
427 if (ioctl(s, SIOCGIFPSRCADDR_IN6, (caddr_t)&in6_ifr) < 0)
429 if (sa->sa_family != AF_INET6)
431 if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0,
432 NI_NUMERICHOST) != 0)
435 if (ioctl(s, SIOCGIFPDSTADDR_IN6, (caddr_t)&in6_ifr) < 0)
437 if (sa->sa_family != AF_INET6)
439 if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0,
440 NI_NUMERICHOST) != 0)
443 printf("\ttunnel inet6 %s --> %s\n", src, dst);
447 in6_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
449 struct in6_aliasreq in6_addreq;
451 memset(&in6_addreq, 0, sizeof(in6_addreq));
452 strncpy(in6_addreq.ifra_name, name, IFNAMSIZ);
453 memcpy(&in6_addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
454 memcpy(&in6_addreq.ifra_dstaddr, dstres->ai_addr,
455 dstres->ai_addr->sa_len);
457 if (ioctl(s, SIOCSIFPHYADDR_IN6, &in6_addreq) < 0)
458 warn("SIOCSIFPHYADDR_IN6");
461 static struct cmd inet6_cmds[] = {
462 DEF_CMD_ARG("prefixlen", setifprefixlen),
463 DEF_CMD("anycast", IN6_IFF_ANYCAST, setip6flags),
464 DEF_CMD("tentative", IN6_IFF_TENTATIVE, setip6flags),
465 DEF_CMD("-tentative", -IN6_IFF_TENTATIVE, setip6flags),
466 DEF_CMD("deprecated", IN6_IFF_DEPRECATED, setip6flags),
467 DEF_CMD("-deprecated", -IN6_IFF_DEPRECATED, setip6flags),
468 DEF_CMD("autoconf", IN6_IFF_AUTOCONF, setip6flags),
469 DEF_CMD("-autoconf", -IN6_IFF_AUTOCONF, setip6flags),
470 DEF_CMD("prefer_source",IN6_IFF_PREFER_SOURCE, setip6flags),
471 DEF_CMD("-prefer_source",-IN6_IFF_PREFER_SOURCE,setip6flags),
472 DEF_CMD("accept_rtadv", ND6_IFF_ACCEPT_RTADV, setnd6flags),
473 DEF_CMD("-accept_rtadv",-ND6_IFF_ACCEPT_RTADV, setnd6flags),
474 DEF_CMD("no_radr", ND6_IFF_NO_RADR, setnd6flags),
475 DEF_CMD("-no_radr", -ND6_IFF_NO_RADR, setnd6flags),
476 DEF_CMD("defaultif", 1, setnd6defif),
477 DEF_CMD("-defaultif", -1, setnd6defif),
478 DEF_CMD("ifdisabled", ND6_IFF_IFDISABLED, setnd6flags),
479 DEF_CMD("-ifdisabled", -ND6_IFF_IFDISABLED, setnd6flags),
480 DEF_CMD("nud", ND6_IFF_PERFORMNUD, setnd6flags),
481 DEF_CMD("-nud", -ND6_IFF_PERFORMNUD, setnd6flags),
482 DEF_CMD("auto_linklocal",ND6_IFF_AUTO_LINKLOCAL,setnd6flags),
483 DEF_CMD("-auto_linklocal",-ND6_IFF_AUTO_LINKLOCAL,setnd6flags),
484 DEF_CMD("no_prefer_iface",ND6_IFF_NO_PREFER_IFACE,setnd6flags),
485 DEF_CMD("-no_prefer_iface",-ND6_IFF_NO_PREFER_IFACE,setnd6flags),
486 DEF_CMD("no_dad", ND6_IFF_NO_DAD, setnd6flags),
487 DEF_CMD("-no_dad", -ND6_IFF_NO_DAD, setnd6flags),
488 DEF_CMD_ARG("pltime", setip6pltime),
489 DEF_CMD_ARG("vltime", setip6vltime),
490 DEF_CMD("eui64", 0, setip6eui64),
493 static struct afswtch af_inet6 = {
496 .af_status = in6_status,
497 .af_getaddr = in6_getaddr,
498 .af_getprefix = in6_getprefix,
499 .af_other_status = nd6_status,
500 .af_postproc = in6_postproc,
501 .af_status_tunnel = in6_status_tunnel,
502 .af_settunnel = in6_set_tunnel,
503 .af_difaddr = SIOCDIFADDR_IN6,
504 .af_aifaddr = SIOCAIFADDR_IN6,
505 .af_ridreq = &in6_addreq,
506 .af_addreq = &in6_addreq,
510 in6_Lopt_cb(const char *optarg __unused)
512 ip6lifetime++; /* print IPv6 address lifetime */
514 static struct option in6_Lopt = { .opt = "L", .opt_usage = "[-L]", .cb = in6_Lopt_cb };
516 static __constructor void
522 if (!feature_present("inet6"))
526 for (i = 0; i < nitems(inet6_cmds); i++)
527 cmd_register(&inet6_cmds[i]);
528 af_register(&af_inet6);
529 opt_register(&in6_Lopt);