ifconfig.tproj/af_inet6.c

   1 /*
   2  * Copyright (c) 2009-2014 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 /*
  30  * Copyright (c) 1983, 1993
  31  *      The Regents of the University of California.  All rights reserved.
  32  *
  33  * Redistribution and use in source and binary forms, with or without
  34  * modification, are permitted provided that the following conditions
  35  * are met:
  36  * 1. Redistributions of source code must retain the above copyright
  37  *    notice, this list of conditions and the following disclaimer.
  38  * 2. Redistributions in binary form must reproduce the above copyright
  39  *    notice, this list of conditions and the following disclaimer in the
  40  *    documentation and/or other materials provided with the distribution.
  41  * 4. Neither the name of the University nor the names of its contributors
  42  *    may be used to endorse or promote products derived from this software
  43  *    without specific prior written permission.
  44  *
  45  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  46  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  47  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  48  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  49  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  50  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  51  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  53  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  54  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  55  * SUCH DAMAGE.
  56  */
  57
  58
  59 #include <sys/param.h>
  60 #include <sys/ioctl.h>
  61 #include <sys/socket.h>
  62 #include <net/if.h>
  63
  64 #include <err.h>
  65 #include <errno.h>
  66 #include <stdio.h>
  67 #include <stdlib.h>
  68 #include <string.h>
  69 #include <unistd.h>
  70 #include <ifaddrs.h>
  71
  72 #include <arpa/inet.h>
  73
  74 #include <netinet/in.h>
  75 #include <net/if_var.h>         /* for struct ifaddr */
  76 #include <netinet/in_var.h>
  77 #include <arpa/inet.h>
  78 #include <netdb.h>
  79
  80 #include <netinet6/nd6.h>       /* Define ND6_INFINITE_LIFETIME */
  81
  82 #include "ifconfig.h"
  83
  84 #define ND6BITS "\020\001PERFORMNUD\002ACCEPT_RTADV\003PREFER_SOURCE" \
  85         "\004IFDISABLED\005DONT_SET_IFROUTE\006PROXY_PREFIXES" \
  86         "\007IGNORE_NA\010INSECURE\011REPLICATED\012DAD"
  87
  88 static  struct in6_ifreq in6_ridreq;
  89 static  struct in6_aliasreq in6_addreq =
  90   { { 0 },
  91     { 0 },
  92     { 0 },
  93     { 0 },
  94     0,
  95     { 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME } };
  96 static  int ip6lifetime;
  97
  98 static  void in6_fillscopeid(struct sockaddr_in6 *sin6);
  99 static  int prefix(void *, int);
 100 static  char *sec2str(time_t);
 101 static  int explicit_prefix = 0;
 102
 103 static  char addr_buf[MAXHOSTNAMELEN *2 + 1];   /*for getnameinfo()*/
 104
 105 static void
 106 setifprefixlen(const char *addr, int dummy __unused, int s,
 107     const struct afswtch *afp)
 108 {
 109         if (afp->af_getprefix != NULL)
 110                 afp->af_getprefix(addr, MASK);
 111         explicit_prefix = 1;
 112 }
 113
 114 static void
 115 setnd6flags(const char *dummyaddr __unused, int d, int s,
 116     const struct afswtch *afp)
 117 {
 118         struct in6_ndireq nd;
 119         int error;
 120
 121         memset(&nd, 0, sizeof(nd));
 122         strncpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname));
 123         error = ioctl(s, SIOCGIFINFO_IN6, &nd);
 124         if (error) {
 125                 warn("ioctl(SIOCGIFINFO_IN6)");
 126                 return;
 127         }
 128         if (d < 0)
 129                 nd.ndi.flags &= ~(-d);
 130         else
 131                 nd.ndi.flags |= d;
 132         error = ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd);
 133         if (error)
 134                 warn("ioctl(SIOCSIFINFO_FLAGS)");
 135 }
 136
 137 static void
 138 setip6flags(const char *dummyaddr __unused, int flag, int dummysoc __unused,
 139     const struct afswtch *afp)
 140 {
 141         if (afp->af_af != AF_INET6)
 142                 err(1, "address flags can be set only for inet6 addresses");
 143
 144         if (flag < 0)
 145                 in6_addreq.ifra_flags &= ~(-flag);
 146         else
 147                 in6_addreq.ifra_flags |= flag;
 148 }
 149
 150 static void
 151 setip6lifetime(const char *cmd, const char *val, int s,
 152     const struct afswtch *afp)
 153 {
 154         time_t newval, t;
 155         char *ep;
 156
 157         t = time(NULL);
 158         newval = (time_t)strtoul(val, &ep, 0);
 159         if (val == ep)
 160                 errx(1, "invalid %s", cmd);
 161         if (afp->af_af != AF_INET6)
 162                 errx(1, "%s not allowed for the AF", cmd);
 163         if (strcmp(cmd, "vltime") == 0) {
 164                 in6_addreq.ifra_lifetime.ia6t_expire = t + newval;
 165                 in6_addreq.ifra_lifetime.ia6t_vltime = newval;
 166         } else if (strcmp(cmd, "pltime") == 0) {
 167                 in6_addreq.ifra_lifetime.ia6t_preferred = t + newval;
 168                 in6_addreq.ifra_lifetime.ia6t_pltime = newval;
 169         }
 170 }
 171
 172 static void
 173 setip6pltime(const char *seconds, int dummy __unused, int s,
 174     const struct afswtch *afp)
 175 {
 176         setip6lifetime("pltime", seconds, s, afp);
 177 }
 178
 179 static void
 180 setip6vltime(const char *seconds, int dummy __unused, int s,
 181     const struct afswtch *afp)
 182 {
 183         setip6lifetime("vltime", seconds, s, afp);
 184 }
 185
 186 static void
 187 setip6eui64(const char *cmd, int dummy __unused, int s,
 188     const struct afswtch *afp)
 189 {
 190         struct ifaddrs *ifap, *ifa;
 191         const struct sockaddr_in6 *sin6 = NULL;
 192         const struct in6_addr *lladdr = NULL;
 193         struct in6_addr *in6;
 194
 195         if (afp->af_af != AF_INET6)
 196                 errx(EXIT_FAILURE, "%s not allowed for the AF", cmd);
 197         in6 = (struct in6_addr *)&in6_addreq.ifra_addr.sin6_addr;
 198         if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0)
 199                 errx(EXIT_FAILURE, "interface index is already filled");
 200         if (getifaddrs(&ifap) != 0)
 201                 err(EXIT_FAILURE, "getifaddrs");
 202         for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
 203                 if (ifa->ifa_addr->sa_family == AF_INET6 &&
 204                     strcmp(ifa->ifa_name, name) == 0) {
 205                         sin6 = (const struct sockaddr_in6 *)ifa->ifa_addr;
 206                         if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
 207                                 lladdr = &sin6->sin6_addr;
 208                                 break;
 209                         }
 210                 }
 211         }
 212         if (!lladdr)
 213                 errx(EXIT_FAILURE, "could not determine link local address");
 214
 215         memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8);
 216
 217         freeifaddrs(ifap);
 218 }
 219
 220 static void
 221 in6_fillscopeid(struct sockaddr_in6 *sin6)
 222 {
 223 #if defined(__KAME__) && defined(KAME_SCOPEID)
 224         if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
 225                 sin6->sin6_scope_id =
 226                         ntohs(*(u_int16_t *)&sin6->sin6_addr.s6_addr[2]);
 227                 sin6->sin6_addr.s6_addr[2] = sin6->sin6_addr.s6_addr[3] = 0;
 228         }
 229 #endif
 230 }
 231
 232 static void
 233 in6_status(int s __unused, const struct ifaddrs *ifa)
 234 {
 235         struct sockaddr_in6 *sin, null_sin;
 236         struct in6_ifreq ifr6;
 237         int s6;
 238         u_int32_t flags6;
 239         struct in6_addrlifetime lifetime;
 240         time_t t = time(NULL);
 241         int error;
 242         u_int32_t scopeid;
 243
 244         memset(&null_sin, 0, sizeof(null_sin));
 245
 246         sin = (struct sockaddr_in6 *)ifa->ifa_addr;
 247         if (sin == NULL)
 248                 return;
 249
 250         strncpy(ifr6.ifr_name, ifr.ifr_name, sizeof(ifr.ifr_name));
 251         if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
 252                 warn("socket(AF_INET6,SOCK_DGRAM)");
 253                 return;
 254         }
 255         ifr6.ifr_addr = *sin;
 256         if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
 257                 warn("ioctl(SIOCGIFAFLAG_IN6)");
 258                 close(s6);
 259                 return;
 260         }
 261         flags6 = ifr6.ifr_ifru.ifru_flags6;
 262         memset(&lifetime, 0, sizeof(lifetime));
 263         ifr6.ifr_addr = *sin;
 264         if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
 265                 warn("ioctl(SIOCGIFALIFETIME_IN6)");
 266                 close(s6);
 267                 return;
 268         }
 269         lifetime = ifr6.ifr_ifru.ifru_lifetime;
 270         close(s6);
 271
 272         /* XXX: embedded link local addr check */
 273         if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
 274             *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
 275                 u_short index;
 276
 277                 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
 278                 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
 279                 if (sin->sin6_scope_id == 0)
 280                         sin->sin6_scope_id = ntohs(index);
 281         }
 282         scopeid = sin->sin6_scope_id;
 283
 284         error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
 285                             sizeof(addr_buf), NULL, 0, NI_NUMERICHOST);
 286         if (error != 0)
 287                 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
 288                           sizeof(addr_buf));
 289         printf("\tinet6 %s ", addr_buf);
 290
 291         if (ifa->ifa_flags & IFF_POINTOPOINT) {
 292                 sin = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
 293                 /*
 294                  * some of the interfaces do not have valid destination
 295                  * address.
 296                  */
 297                 if (sin != NULL && sin->sin6_family == AF_INET6) {
 298                         int error;
 299
 300                         /* XXX: embedded link local addr check */
 301                         if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
 302                             *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
 303                                 u_short index;
 304
 305                                 index = *(u_short *)&sin->sin6_addr.s6_addr[2];
 306                                 *(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
 307                                 if (sin->sin6_scope_id == 0)
 308                                         sin->sin6_scope_id = ntohs(index);
 309                         }
 310
 311                         error = getnameinfo((struct sockaddr *)sin,
 312                                             sin->sin6_len, addr_buf,
 313                                             sizeof(addr_buf), NULL, 0,
 314                                             NI_NUMERICHOST);
 315                         if (error != 0)
 316                                 inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
 317                                           sizeof(addr_buf));
 318                         printf("--> %s ", addr_buf);
 319                 }
 320         }
 321
 322         sin = (struct sockaddr_in6 *)ifa->ifa_netmask;
 323         if (sin == NULL)
 324                 sin = &null_sin;
 325         printf("prefixlen %d ", prefix(&sin->sin6_addr,
 326                 sizeof(struct in6_addr)));
 327
 328         if ((flags6 & IN6_IFF_ANYCAST) != 0)
 329                 printf("anycast ");
 330         if ((flags6 & IN6_IFF_TENTATIVE) != 0)
 331                 printf("tentative ");
 332         if ((flags6 & IN6_IFF_OPTIMISTIC) != 0)
 333                 printf("optimistic ");
 334         if ((flags6 & IN6_IFF_DUPLICATED) != 0)
 335                 printf("duplicated ");
 336         if ((flags6 & IN6_IFF_DETACHED) != 0)
 337                 printf("detached ");
 338         if ((flags6 & IN6_IFF_DEPRECATED) != 0)
 339                 printf("deprecated ");
 340         if ((flags6 & IN6_IFF_AUTOCONF) != 0)
 341                 printf("autoconf ");
 342         if ((flags6 & IN6_IFF_TEMPORARY) != 0)
 343                 printf("temporary ");
 344         if ((flags6 & IN6_IFF_DYNAMIC) != 0)
 345                 printf("dynamic ");
 346         if ((flags6 & IN6_IFF_SECURED) != 0)
 347                 printf("secured ");
 348
 349         if (scopeid)
 350                 printf("scopeid 0x%x ", scopeid);
 351
 352         if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) {
 353                 printf("pltime ");
 354                 if (lifetime.ia6t_preferred) {
 355                         printf("%s ", lifetime.ia6t_preferred < t
 356                                 ? "0" : sec2str(lifetime.ia6t_preferred - t));
 357                 } else
 358                         printf("infty ");
 359
 360                 printf("vltime ");
 361                 if (lifetime.ia6t_expire) {
 362                         printf("%s ", lifetime.ia6t_expire < t
 363                                 ? "0" : sec2str(lifetime.ia6t_expire - t));
 364                 } else
 365                         printf("infty ");
 366         }
 367
 368         putchar('\n');
 369 }
 370
 371 #define SIN6(x) ((struct sockaddr_in6 *) &(x))
 372 static struct   sockaddr_in6 *sin6tab[] = {
 373         SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr),
 374         SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr)
 375 };
 376
 377 static void
 378 in6_getprefix(const char *plen, int which)
 379 {
 380         struct sockaddr_in6 *sin = sin6tab[which];
 381         u_char *cp;
 382         int len = atoi(plen);
 383
 384         if ((len < 0) || (len > 128))
 385                 errx(1, "%s: bad value", plen);
 386         sin->sin6_len = sizeof(*sin);
 387         if (which != MASK)
 388                 sin->sin6_family = AF_INET6;
 389         if ((len == 0) || (len == 128)) {
 390                 memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
 391                 return;
 392         }
 393         memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
 394         for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
 395                 *cp++ = 0xff;
 396         *cp = 0xff << (8 - len);
 397 }
 398
 399 static void
 400 in6_getaddr(const char *s, int which)
 401 {
 402         struct sockaddr_in6 *sin = sin6tab[which];
 403         struct addrinfo hints, *res;
 404         int error = -1;
 405
 406         newaddr &= 1;
 407
 408         sin->sin6_len = sizeof(*sin);
 409         if (which != MASK)
 410                 sin->sin6_family = AF_INET6;
 411
 412         if (which == ADDR) {
 413                 char *p = NULL;
 414                 if((p = strrchr(s, '/')) != NULL) {
 415                         *p = '\0';
 416                         in6_getprefix(p + 1, MASK);
 417                         explicit_prefix = 1;
 418                 }
 419         }
 420
 421         if (sin->sin6_family == AF_INET6) {
 422                 bzero(&hints, sizeof(struct addrinfo));
 423                 hints.ai_family = AF_INET6;
 424                 error = getaddrinfo(s, NULL, &hints, &res);
 425         }
 426         if (error != 0) {
 427                 if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
 428                         errx(1, "%s: bad value", s);
 429         } else
 430                 bcopy(res->ai_addr, sin, res->ai_addrlen);
 431 }
 432
 433 static int
 434 prefix(void *val, int size)
 435 {
 436         u_char *name = (u_char *)val;
 437         int byte, bit, plen = 0;
 438
 439         for (byte = 0; byte < size; byte++, plen += 8)
 440                 if (name[byte] != 0xff)
 441                         break;
 442         if (byte == size)
 443                 return (plen);
 444         for (bit = 7; bit != 0; bit--, plen++)
 445                 if (!(name[byte] & (1 << bit)))
 446                         break;
 447         for (; bit != 0; bit--)
 448                 if (name[byte] & (1 << bit))
 449                         return(0);
 450         byte++;
 451         for (; byte < size; byte++)
 452                 if (name[byte])
 453                         return(0);
 454         return (plen);
 455 }
 456
 457 static char *
 458 sec2str(time_t total)
 459 {
 460         static char result[256];
 461         int days, hours, mins, secs;
 462         int first = 1;
 463         char *p = result;
 464
 465         if (0) {
 466                 days = total / 3600 / 24;
 467                 hours = (total / 3600) % 24;
 468                 mins = (total / 60) % 60;
 469                 secs = total % 60;
 470
 471                 if (days) {
 472                         first = 0;
 473                         p += snprintf(p, sizeof(result) - (p - result), "%dd", days);
 474                 }
 475                 if (!first || hours) {
 476                         first = 0;
 477                         p += snprintf(p, sizeof(result) - (p - result), "%dh", hours);
 478                 }
 479                 if (!first || mins) {
 480                         first = 0;
 481                         p += snprintf(p, sizeof(result) - (p - result), "%dm", mins);
 482                 }
 483                 snprintf(p, sizeof(result) - (p - result), "%ds", secs);
 484         } else
 485                 snprintf(result, sizeof(result), "%lu", (unsigned long)total);
 486
 487         return(result);
 488 }
 489
 490 static void
 491 in6_postproc(int s, const struct afswtch *afp)
 492 {
 493         if (explicit_prefix == 0) {
 494                 /* Aggregatable address architecture defines all prefixes
 495                    are 64. So, it is convenient to set prefixlen to 64 if
 496                    it is not specified. */
 497                 setifprefixlen("64", 0, s, afp);
 498                 /* in6_getprefix("64", MASK) if MASK is available here... */
 499         }
 500 }
 501
 502 static void
 503 in6_status_tunnel(int s)
 504 {
 505         char src[NI_MAXHOST];
 506         char dst[NI_MAXHOST];
 507         struct in6_ifreq in6_ifr;
 508         const struct sockaddr *sa = (const struct sockaddr *) &in6_ifr.ifr_addr;
 509
 510         memset(&in6_ifr, 0, sizeof(in6_ifr));
 511         strncpy(in6_ifr.ifr_name, name, IFNAMSIZ);
 512
 513         if (ioctl(s, SIOCGIFPSRCADDR_IN6, (caddr_t)&in6_ifr) < 0)
 514                 return;
 515         if (sa->sa_family != AF_INET6)
 516                 return;
 517         in6_fillscopeid(&in6_ifr.ifr_addr);
 518         if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0,
 519             NI_NUMERICHOST) != 0)
 520                 src[0] = '\0';
 521
 522         if (ioctl(s, SIOCGIFPDSTADDR_IN6, (caddr_t)&in6_ifr) < 0)
 523                 return;
 524         if (sa->sa_family != AF_INET6)
 525                 return;
 526         in6_fillscopeid(&in6_ifr.ifr_addr);
 527         if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0,
 528             NI_NUMERICHOST) != 0)
 529                 dst[0] = '\0';
 530
 531         printf("\ttunnel inet6 %s --> %s\n", src, dst);
 532 }
 533
 534 static void
 535 nd6_status(int s)
 536 {
 537         struct in6_ndireq nd;
 538         int s6;
 539         int error;
 540
 541         memset(&nd, 0, sizeof(nd));
 542         strncpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname));
 543         if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
 544                 if (errno != EPROTONOSUPPORT)
 545                         warn("socket(AF_INET6, SOCK_DGRAM)");
 546                 return;
 547         }
 548         error = ioctl(s6, SIOCGIFINFO_IN6, &nd);
 549         if (error) {
 550                 if (errno != EPFNOSUPPORT && errno != EINVAL)
 551                         warn("ioctl(SIOCGIFINFO_IN6)");
 552                 close(s6);
 553                 return;
 554         }
 555         close(s6);
 556         if (nd.ndi.flags == 0)
 557                 return;
 558         printb("\tnd6 options", (unsigned int)nd.ndi.flags, ND6BITS);
 559         putchar('\n');
 560 }
 561
 562 static void
 563 in6_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
 564 {
 565         struct in6_aliasreq in6_addreq;
 566
 567         memset(&in6_addreq, 0, sizeof(in6_addreq));
 568         strncpy(in6_addreq.ifra_name, name, IFNAMSIZ);
 569         memcpy(&in6_addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
 570         memcpy(&in6_addreq.ifra_dstaddr, dstres->ai_addr,
 571             dstres->ai_addr->sa_len);
 572
 573         if (ioctl(s, SIOCSIFPHYADDR_IN6, &in6_addreq) < 0)
 574                 warn("SIOCSIFPHYADDR_IN6");
 575 }
 576
 577 static void
 578 in6_set_router(int s, int enable)
 579 {
 580         struct ifreq ifr;
 581
 582         bzero(&ifr, sizeof (ifr));
 583         strncpy(ifr.ifr_name, name, IFNAMSIZ);
 584         ifr.ifr_intval = enable;
 585
 586         if (ioctl(s, SIOCSETROUTERMODE_IN6, &ifr) < 0)
 587                 warn("SIOCSETROUTERMODE_IN6");
 588 }
 589
 590 static struct cmd inet6_cmds[] = {
 591         DEF_CMD_ARG("prefixlen",                        setifprefixlen),
 592         DEF_CMD("anycast",      IN6_IFF_ANYCAST,        setip6flags),
 593         DEF_CMD("tentative",    IN6_IFF_TENTATIVE,      setip6flags),
 594         DEF_CMD("-tentative",   -IN6_IFF_TENTATIVE,     setip6flags),
 595         /* RFC 4429, section 3.1, says:
 596          * "Optimistic DAD SHOULD NOT be used for manually entered
 597          * addresses."
 598          * it's not a MUST...
 599          */
 600         DEF_CMD("optimistic",   IN6_IFF_OPTIMISTIC,     setip6flags),
 601         DEF_CMD("-optimistic",  -IN6_IFF_OPTIMISTIC,    setip6flags),
 602         DEF_CMD("deprecated",   IN6_IFF_DEPRECATED,     setip6flags),
 603         DEF_CMD("-deprecated", -IN6_IFF_DEPRECATED,     setip6flags),
 604         DEF_CMD("autoconf",     IN6_IFF_AUTOCONF,       setip6flags),
 605         DEF_CMD("-autoconf",    -IN6_IFF_AUTOCONF,      setip6flags),
 606         DEF_CMD("nud",          ND6_IFF_PERFORMNUD,     setnd6flags),
 607         DEF_CMD("-nud",         -ND6_IFF_PERFORMNUD,    setnd6flags),
 608         DEF_CMD("ifdisabled",   ND6_IFF_IFDISABLED,     setnd6flags),
 609         DEF_CMD("-ifdisabled",  -ND6_IFF_IFDISABLED,    setnd6flags),
 610         DEF_CMD("replicated",   ND6_IFF_REPLICATED,     setnd6flags),
 611         DEF_CMD("-replicated",  -ND6_IFF_REPLICATED,    setnd6flags),
 612         DEF_CMD("proxy_prefixes", ND6_IFF_PROXY_PREFIXES,       setnd6flags),
 613         DEF_CMD("-proxy_prefixes", -ND6_IFF_PROXY_PREFIXES,     setnd6flags),
 614         DEF_CMD("insecure",     ND6_IFF_INSECURE,       setnd6flags),
 615         DEF_CMD("-insecure",    -ND6_IFF_INSECURE,      setnd6flags),
 616         DEF_CMD_ARG("pltime",                           setip6pltime),
 617         DEF_CMD_ARG("vltime",                           setip6vltime),
 618         DEF_CMD("eui64",        0,                      setip6eui64),
 619         DEF_CMD("secured",      IN6_IFF_SECURED,        setip6flags),
 620         DEF_CMD("-secured",     -IN6_IFF_SECURED,       setip6flags),
 621         DEF_CMD("dad",          ND6_IFF_DAD,            setnd6flags),
 622         DEF_CMD("-dad",         -ND6_IFF_DAD,           setnd6flags),
 623 };
 624
 625 static struct afswtch af_inet6 = {
 626         .af_name        = "inet6",
 627         .af_af          = AF_INET6,
 628         .af_status      = in6_status,
 629         .af_getaddr     = in6_getaddr,
 630         .af_getprefix   = in6_getprefix,
 631         .af_other_status = nd6_status,
 632         .af_postproc    = in6_postproc,
 633         .af_status_tunnel = in6_status_tunnel,
 634         .af_settunnel   = in6_set_tunnel,
 635         .af_setrouter   = in6_set_router,
 636         .af_difaddr     = SIOCDIFADDR_IN6,
 637         .af_aifaddr     = SIOCAIFADDR_IN6,
 638         .af_ridreq      = &in6_ridreq,
 639         .af_addreq      = &in6_addreq,
 640 };
 641
 642 static void
 643 in6_Lopt_cb(const char *optarg __unused)
 644 {
 645         ip6lifetime++;  /* print IPv6 address lifetime */
 646 }
 647 static struct option in6_Lopt = { "L", "[-L]", in6_Lopt_cb };
 648
 649 static __constructor void
 650 inet6_ctor(void)
 651 {
 652 #define N(a)    (sizeof(a) / sizeof(a[0]))
 653         int i;
 654
 655         for (i = 0; i < N(inet6_cmds);  i++)
 656                 cmd_register(&inet6_cmds[i]);
 657         af_register(&af_inet6);
 658         opt_register(&in6_Lopt);
 659 #undef N
 660 }