usr.sbin/ndp/ndp.c

   1 /*      $FreeBSD$       */
   2 /*      $KAME: ndp.c,v 1.104 2003/06/27 07:48:39 itojun Exp $   */
   3
   4 /*
   5  * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the project nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32 /*
  33  * Copyright (c) 1984, 1993
  34  *      The Regents of the University of California.  All rights reserved.
  35  *
  36  * This code is derived from software contributed to Berkeley by
  37  * Sun Microsystems, Inc.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
  42  * 1. Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  * 2. Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in the
  46  *    documentation and/or other materials provided with the distribution.
  47  * 4. Neither the name of the University nor the names of its contributors
  48  *    may be used to endorse or promote products derived from this software
  49  *    without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  52  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  53  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  54  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  55  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  56  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  57  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  58  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  59  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  60  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  61  * SUCH DAMAGE.
  62  */
  63
  64 /*
  65  * Based on:
  66  * "@(#) Copyright (c) 1984, 1993\n\
  67  *      The Regents of the University of California.  All rights reserved.\n";
  68  *
  69  * "@(#)arp.c   8.2 (Berkeley) 1/2/94";
  70  */
  71
  72 /*
  73  * ndp - display, set, delete and flush neighbor cache
  74  */
  75
  76
  77 #include <sys/param.h>
  78 #include <sys/file.h>
  79 #include <sys/ioctl.h>
  80 #include <sys/socket.h>
  81 #include <sys/sysctl.h>
  82 #include <sys/time.h>
  83 #include <sys/queue.h>
  84
  85 #include <net/if.h>
  86 #include <net/if_var.h>
  87 #include <net/if_dl.h>
  88 #include <net/if_types.h>
  89 #include <net/route.h>
  90
  91 #include <netinet/in.h>
  92 #include <netinet/if_ether.h>
  93
  94 #include <netinet/icmp6.h>
  95 #include <netinet6/in6_var.h>
  96 #include <netinet6/nd6.h>
  97
  98 #include <arpa/inet.h>
  99
 100 #include <netdb.h>
 101 #include <errno.h>
 102 #include <nlist.h>
 103 #include <stdio.h>
 104 #include <string.h>
 105 #include <paths.h>
 106 #include <err.h>
 107 #include <stdlib.h>
 108 #include <fcntl.h>
 109 #include <unistd.h>
 110 #include <err.h>
 111 #include "gmt2local.h"
 112
 113 /* packing rule for routing socket */
 114 #define ROUNDUP(a) \
 115         ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
 116 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
 117
 118 static pid_t pid;
 119 static int nflag;
 120 static int tflag;
 121 static int32_t thiszone;        /* time difference with gmt */
 122 static int s = -1;
 123 static int repeat = 0;
 124
 125 char ntop_buf[INET6_ADDRSTRLEN];        /* inet_ntop() */
 126 char host_buf[NI_MAXHOST];              /* getnameinfo() */
 127 char ifix_buf[IFNAMSIZ];                /* if_indextoname() */
 128
 129 int main __P((int, char **));
 130 int file __P((char *));
 131 void getsocket __P((void));
 132 int set __P((int, char **));
 133 void get __P((char *));
 134 int delete __P((char *));
 135 void dump __P((struct in6_addr *, int));
 136 static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *, int, int));
 137 static char *ether_str __P((struct sockaddr_dl *));
 138 int ndp_ether_aton __P((char *, u_char *));
 139 void usage __P((void));
 140 int rtmsg __P((int));
 141 void ifinfo __P((char *, int, char **));
 142 void rtrlist __P((void));
 143 void plist __P((void));
 144 void pfx_flush __P((void));
 145 void rtrlist __P((void));
 146 void rtr_flush __P((void));
 147 void harmonize_rtr __P((void));
 148 #ifdef SIOCSDEFIFACE_IN6        /* XXX: check SIOCGDEFIFACE_IN6 as well? */
 149 static void getdefif __P((void));
 150 static void setdefif __P((char *));
 151 #endif
 152 static char *sec2str __P((time_t));
 153 static char *ether_str __P((struct sockaddr_dl *));
 154 static void ts_print __P((const struct timeval *));
 155
 156 #ifdef ICMPV6CTL_ND6_DRLIST
 157 static char *rtpref_str[] = {
 158         "medium",               /* 00 */
 159         "high",                 /* 01 */
 160         "rsv",                  /* 10 */
 161         "low"                   /* 11 */
 162 };
 163 #endif
 164
 165 int mode = 0;
 166 char *arg = NULL;
 167
 168 int
 169 main(argc, argv)
 170         int argc;
 171         char **argv;
 172 {
 173         int ch;
 174
 175         pid = getpid();
 176         thiszone = gmt2local(0);
 177         while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1)
 178                 switch (ch) {
 179                 case 'a':
 180                 case 'c':
 181                 case 'p':
 182                 case 'r':
 183                 case 'H':
 184                 case 'P':
 185                 case 'R':
 186                 case 's':
 187                 case 'I':
 188                         if (mode) {
 189                                 usage();
 190                                 /*NOTREACHED*/
 191                         }
 192                         mode = ch;
 193                         arg = NULL;
 194                         break;
 195                 case 'd':
 196                 case 'f':
 197                 case 'i' :
 198                         if (mode) {
 199                                 usage();
 200                                 /*NOTREACHED*/
 201                         }
 202                         mode = ch;
 203                         arg = optarg;
 204                         break;
 205                 case 'n':
 206                         nflag = 1;
 207                         break;
 208                 case 't':
 209                         tflag = 1;
 210                         break;
 211                 case 'A':
 212                         if (mode) {
 213                                 usage();
 214                                 /*NOTREACHED*/
 215                         }
 216                         mode = 'a';
 217                         repeat = atoi(optarg);
 218                         if (repeat < 0) {
 219                                 usage();
 220                                 /*NOTREACHED*/
 221                         }
 222                         break;
 223                 default:
 224                         usage();
 225                 }
 226
 227         argc -= optind;
 228         argv += optind;
 229
 230         switch (mode) {
 231         case 'a':
 232         case 'c':
 233                 if (argc != 0) {
 234                         usage();
 235                         /*NOTREACHED*/
 236                 }
 237                 dump(0, mode == 'c');
 238                 break;
 239         case 'd':
 240                 if (argc != 0) {
 241                         usage();
 242                         /*NOTREACHED*/
 243                 }
 244                 delete(arg);
 245                 break;
 246         case 'I':
 247 #ifdef SIOCSDEFIFACE_IN6        /* XXX: check SIOCGDEFIFACE_IN6 as well? */
 248                 if (argc > 1) {
 249                         usage();
 250                         /*NOTREACHED*/
 251                 } else if (argc == 1) {
 252                         if (strcmp(*argv, "delete") == 0 ||
 253                             if_nametoindex(*argv))
 254                                 setdefif(*argv);
 255                         else
 256                                 errx(1, "invalid interface %s", *argv);
 257                 }
 258                 getdefif(); /* always call it to print the result */
 259                 break;
 260 #else
 261                 errx(1, "not supported yet");
 262                 /*NOTREACHED*/
 263 #endif
 264         case 'p':
 265                 if (argc != 0) {
 266                         usage();
 267                         /*NOTREACHED*/
 268                 }
 269                 plist();
 270                 break;
 271         case 'i':
 272                 ifinfo(arg, argc, argv);
 273                 break;
 274         case 'r':
 275                 if (argc != 0) {
 276                         usage();
 277                         /*NOTREACHED*/
 278                 }
 279                 rtrlist();
 280                 break;
 281         case 's':
 282                 if (argc < 2 || argc > 4)
 283                         usage();
 284                 exit(set(argc, argv) ? 1 : 0);
 285         case 'H':
 286                 if (argc != 0) {
 287                         usage();
 288                         /*NOTREACHED*/
 289                 }
 290                 harmonize_rtr();
 291                 break;
 292         case 'P':
 293                 if (argc != 0) {
 294                         usage();
 295                         /*NOTREACHED*/
 296                 }
 297                 pfx_flush();
 298                 break;
 299         case 'R':
 300                 if (argc != 0) {
 301                         usage();
 302                         /*NOTREACHED*/
 303                 }
 304                 rtr_flush();
 305                 break;
 306         case 0:
 307                 if (argc != 1) {
 308                         usage();
 309                         /*NOTREACHED*/
 310                 }
 311                 get(argv[0]);
 312                 break;
 313         }
 314         exit(0);
 315 }
 316
 317 /*
 318  * Process a file to set standard ndp entries
 319  */
 320 int
 321 file(name)
 322         char *name;
 323 {
 324         FILE *fp;
 325         int i, retval;
 326         char line[100], arg[5][50], *args[5];
 327
 328         if ((fp = fopen(name, "r")) == NULL) {
 329                 fprintf(stderr, "ndp: cannot open %s\n", name);
 330                 exit(1);
 331         }
 332         args[0] = &arg[0][0];
 333         args[1] = &arg[1][0];
 334         args[2] = &arg[2][0];
 335         args[3] = &arg[3][0];
 336         args[4] = &arg[4][0];
 337         retval = 0;
 338         while (fgets(line, 100, fp) != NULL) {
 339                 i = sscanf(line, "%49s %49s %49s %49s %49s",
 340                     arg[0], arg[1], arg[2], arg[3], arg[4]);
 341                 if (i < 2) {
 342                         fprintf(stderr, "ndp: bad line: %s\n", line);
 343                         retval = 1;
 344                         continue;
 345                 }
 346                 if (set(i, args))
 347                         retval = 1;
 348         }
 349         fclose(fp);
 350         return (retval);
 351 }
 352
 353 void
 354 getsocket()
 355 {
 356         if (s < 0) {
 357                 s = socket(PF_ROUTE, SOCK_RAW, 0);
 358                 if (s < 0) {
 359                         err(1, "socket");
 360                         /* NOTREACHED */
 361                 }
 362         }
 363 }
 364
 365 struct  sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 };
 366 struct  sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m;
 367 struct  sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m;
 368 int     expire_time, flags, found_entry;
 369 struct  {
 370         struct  rt_msghdr m_rtm;
 371         char    m_space[512];
 372 }       m_rtmsg;
 373
 374 /*
 375  * Set an individual neighbor cache entry
 376  */
 377 int
 378 set(argc, argv)
 379         int argc;
 380         char **argv;
 381 {
 382         register struct sockaddr_in6 *sin = &sin_m;
 383         register struct sockaddr_dl *sdl;
 384         register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
 385         struct addrinfo hints, *res;
 386         int gai_error;
 387         u_char *ea;
 388         char *host = argv[0], *eaddr = argv[1];
 389
 390         getsocket();
 391         argc -= 2;
 392         argv += 2;
 393         sdl_m = blank_sdl;
 394         sin_m = blank_sin;
 395
 396         bzero(&hints, sizeof(hints));
 397         hints.ai_family = AF_INET6;
 398         gai_error = getaddrinfo(host, NULL, &hints, &res);
 399         if (gai_error) {
 400                 fprintf(stderr, "ndp: %s: %s\n", host,
 401                         gai_strerror(gai_error));
 402                 return 1;
 403         }
 404         sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
 405 #ifdef __KAME__
 406         if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
 407                 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
 408                     htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
 409         }
 410 #endif
 411         ea = (u_char *)LLADDR(&sdl_m);
 412         if (ndp_ether_aton(eaddr, ea) == 0)
 413                 sdl_m.sdl_alen = 6;
 414         flags = expire_time = 0;
 415         while (argc-- > 0) {
 416                 if (strncmp(argv[0], "temp", 4) == 0) {
 417                         struct timeval time;
 418
 419                         gettimeofday(&time, 0);
 420                         expire_time = time.tv_sec + 20 * 60;
 421                 } else if (strncmp(argv[0], "proxy", 5) == 0)
 422                         flags |= RTF_ANNOUNCE;
 423                 argv++;
 424         }
 425         if (rtmsg(RTM_GET) < 0) {
 426                 errx(1, "RTM_GET(%s) failed", host);
 427                 /* NOTREACHED */
 428         }
 429         sin = (struct sockaddr_in6 *)(rtm + 1);
 430         sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
 431         if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
 432                 if (sdl->sdl_family == AF_LINK &&
 433                     (rtm->rtm_flags & RTF_LLINFO) &&
 434                     !(rtm->rtm_flags & RTF_GATEWAY)) {
 435                         switch (sdl->sdl_type) {
 436                         case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
 437                         case IFT_ISO88024: case IFT_ISO88025:
 438                                 goto overwrite;
 439                         }
 440                 }
 441                 /*
 442                  * IPv4 arp command retries with sin_other = SIN_PROXY here.
 443                  */
 444                 fprintf(stderr, "set: cannot configure a new entry\n");
 445                 return 1;
 446         }
 447
 448 overwrite:
 449         if (sdl->sdl_family != AF_LINK) {
 450                 printf("cannot intuit interface index and type for %s\n", host);
 451                 return (1);
 452         }
 453         sdl_m.sdl_type = sdl->sdl_type;
 454         sdl_m.sdl_index = sdl->sdl_index;
 455         return (rtmsg(RTM_ADD));
 456 }
 457
 458 /*
 459  * Display an individual neighbor cache entry
 460  */
 461 void
 462 get(host)
 463         char *host;
 464 {
 465         struct sockaddr_in6 *sin = &sin_m;
 466         struct addrinfo hints, *res;
 467         int gai_error;
 468
 469         sin_m = blank_sin;
 470         bzero(&hints, sizeof(hints));
 471         hints.ai_family = AF_INET6;
 472         gai_error = getaddrinfo(host, NULL, &hints, &res);
 473         if (gai_error) {
 474                 fprintf(stderr, "ndp: %s: %s\n", host,
 475                     gai_strerror(gai_error));
 476                 return;
 477         }
 478         sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
 479 #ifdef __KAME__
 480         if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
 481                 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
 482                     htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
 483         }
 484 #endif
 485         dump(&sin->sin6_addr, 0);
 486         if (found_entry == 0) {
 487                 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
 488                     sizeof(host_buf), NULL ,0,
 489                     (nflag ? NI_NUMERICHOST : 0));
 490                 printf("%s (%s) -- no entry\n", host, host_buf);
 491                 exit(1);
 492         }
 493 }
 494
 495 /*
 496  * Delete a neighbor cache entry
 497  */
 498 int
 499 delete(host)
 500         char *host;
 501 {
 502         struct sockaddr_in6 *sin = &sin_m;
 503         register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
 504         struct sockaddr_dl *sdl;
 505         struct addrinfo hints, *res;
 506         int gai_error;
 507
 508         getsocket();
 509         sin_m = blank_sin;
 510
 511         bzero(&hints, sizeof(hints));
 512         hints.ai_family = AF_INET6;
 513         gai_error = getaddrinfo(host, NULL, &hints, &res);
 514         if (gai_error) {
 515                 fprintf(stderr, "ndp: %s: %s\n", host,
 516                     gai_strerror(gai_error));
 517                 return 1;
 518         }
 519         sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
 520 #ifdef __KAME__
 521         if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
 522                 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
 523                     htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
 524         }
 525 #endif
 526         if (rtmsg(RTM_GET) < 0) {
 527                 errx(1, "RTM_GET(%s) failed", host);
 528                 /* NOTREACHED */
 529         }
 530         sin = (struct sockaddr_in6 *)(rtm + 1);
 531         sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
 532         if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
 533                 if (sdl->sdl_family == AF_LINK &&
 534                     (rtm->rtm_flags & RTF_LLINFO) &&
 535                     !(rtm->rtm_flags & RTF_GATEWAY)) {
 536                         goto delete;
 537                 }
 538                 /*
 539                  * IPv4 arp command retries with sin_other = SIN_PROXY here.
 540                  */
 541                 fprintf(stderr, "delete: cannot delete non-NDP entry\n");
 542                 return 1;
 543         }
 544
 545 delete:
 546         if (sdl->sdl_family != AF_LINK) {
 547                 printf("cannot locate %s\n", host);
 548                 return (1);
 549         }
 550         if (rtmsg(RTM_DELETE) == 0) {
 551                 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */
 552
 553 #ifdef __KAME__
 554                 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) {
 555                         s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]);
 556                         *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0;
 557                 }
 558 #endif
 559                 getnameinfo((struct sockaddr *)&s6,
 560                     s6.sin6_len, host_buf,
 561                     sizeof(host_buf), NULL, 0,
 562                     (nflag ? NI_NUMERICHOST : 0));
 563                 printf("%s (%s) deleted\n", host, host_buf);
 564         }
 565
 566         return 0;
 567 }
 568
 569 #define W_ADDR  36
 570 #define W_LL    17
 571 #define W_IF    6
 572
 573 /*
 574  * Dump the entire neighbor cache
 575  */
 576 void
 577 dump(addr, cflag)
 578         struct in6_addr *addr;
 579         int cflag;
 580 {
 581         int mib[6];
 582         size_t needed;
 583         char *lim, *buf, *next;
 584         struct rt_msghdr *rtm;
 585         struct sockaddr_in6 *sin;
 586         struct sockaddr_dl *sdl;
 587         extern int h_errno;
 588         struct in6_nbrinfo *nbi;
 589         struct timeval time;
 590         int addrwidth;
 591         int llwidth;
 592         int ifwidth;
 593         char flgbuf[8];
 594         char *ifname;
 595
 596         /* Print header */
 597         if (!tflag && !cflag)
 598                 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n",
 599                     W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address",
 600                     W_IF, W_IF, "Netif", "Expire", "S", "Flags");
 601
 602 again:;
 603         mib[0] = CTL_NET;
 604         mib[1] = PF_ROUTE;
 605         mib[2] = 0;
 606         mib[3] = AF_INET6;
 607         mib[4] = NET_RT_FLAGS;
 608         mib[5] = RTF_LLINFO;
 609         if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
 610                 err(1, "sysctl(PF_ROUTE estimate)");
 611         if (needed > 0) {
 612                 if ((buf = malloc(needed)) == NULL)
 613                         err(1, "malloc");
 614                 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
 615                         err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)");
 616                 lim = buf + needed;
 617         } else
 618                 buf = lim = NULL;
 619
 620         for (next = buf; next && next < lim; next += rtm->rtm_msglen) {
 621                 int isrouter = 0, prbs = 0;
 622
 623                 rtm = (struct rt_msghdr *)next;
 624                 sin = (struct sockaddr_in6 *)(rtm + 1);
 625                 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len));
 626
 627                 /*
 628                  * Some OSes can produce a route that has the LINK flag but
 629                  * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD
 630                  * and BSD/OS, where xx is not the interface identifier on
 631                  * lo0).  Such routes entry would annoy getnbrinfo() below,
 632                  * so we skip them.
 633                  * XXX: such routes should have the GATEWAY flag, not the
 634                  * LINK flag.  However, there is rotten routing software
 635                  * that advertises all routes that have the GATEWAY flag.
 636                  * Thus, KAME kernel intentionally does not set the LINK flag.
 637                  * What is to be fixed is not ndp, but such routing software
 638                  * (and the kernel workaround)...
 639                  */
 640                 if (sdl->sdl_family != AF_LINK)
 641                         continue;
 642
 643                 if (!(rtm->rtm_flags & RTF_HOST))
 644                         continue;
 645
 646                 if (addr) {
 647                         if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr))
 648                                 continue;
 649                         found_entry = 1;
 650                 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr))
 651                         continue;
 652                 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) ||
 653                     IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) {
 654                         /* XXX: should scope id be filled in the kernel? */
 655                         if (sin->sin6_scope_id == 0)
 656                                 sin->sin6_scope_id = sdl->sdl_index;
 657 #ifdef __KAME__
 658                         /* KAME specific hack; removed the embedded id */
 659                         *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0;
 660 #endif
 661                 }
 662                 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
 663                     sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0));
 664                 if (cflag) {
 665 #ifdef RTF_WASCLONED
 666                         if (rtm->rtm_flags & RTF_WASCLONED)
 667                                 delete(host_buf);
 668 #elif defined(RTF_CLONED)
 669                         if (rtm->rtm_flags & RTF_CLONED)
 670                                 delete(host_buf);
 671 #else
 672                         delete(host_buf);
 673 #endif
 674                         continue;
 675                 }
 676                 gettimeofday(&time, 0);
 677                 if (tflag)
 678                         ts_print(&time);
 679
 680                 addrwidth = strlen(host_buf);
 681                 if (addrwidth < W_ADDR)
 682                         addrwidth = W_ADDR;
 683                 llwidth = strlen(ether_str(sdl));
 684                 if (W_ADDR + W_LL - addrwidth > llwidth)
 685                         llwidth = W_ADDR + W_LL - addrwidth;
 686                 ifname = if_indextoname(sdl->sdl_index, ifix_buf);
 687                 if (!ifname)
 688                         ifname = "?";
 689                 ifwidth = strlen(ifname);
 690                 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth)
 691                         ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth;
 692
 693                 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf,
 694                     llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname);
 695
 696                 /* Print neighbor discovery specific informations */
 697                 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1);
 698                 if (nbi) {
 699                         if (nbi->expire > time.tv_sec) {
 700                                 printf(" %-9.9s",
 701                                     sec2str(nbi->expire - time.tv_sec));
 702                         } else if (nbi->expire == 0)
 703                                 printf(" %-9.9s", "permanent");
 704                         else
 705                                 printf(" %-9.9s", "expired");
 706
 707                         switch (nbi->state) {
 708                         case ND6_LLINFO_NOSTATE:
 709                                  printf(" N");
 710                                  break;
 711 #ifdef ND6_LLINFO_WAITDELETE
 712                         case ND6_LLINFO_WAITDELETE:
 713                                  printf(" W");
 714                                  break;
 715 #endif
 716                         case ND6_LLINFO_INCOMPLETE:
 717                                  printf(" I");
 718                                  break;
 719                         case ND6_LLINFO_REACHABLE:
 720                                  printf(" R");
 721                                  break;
 722                         case ND6_LLINFO_STALE:
 723                                  printf(" S");
 724                                  break;
 725                         case ND6_LLINFO_DELAY:
 726                                  printf(" D");
 727                                  break;
 728                         case ND6_LLINFO_PROBE:
 729                                  printf(" P");
 730                                  break;
 731                         default:
 732                                  printf(" ?");
 733                                  break;
 734                         }
 735
 736                         isrouter = nbi->isrouter;
 737                         prbs = nbi->asked;
 738                 } else {
 739                         warnx("failed to get neighbor information");
 740                         printf("  ");
 741                 }
 742
 743                 /*
 744                  * other flags. R: router, P: proxy, W: ??
 745                  */
 746                 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
 747                         snprintf(flgbuf, sizeof(flgbuf), "%s%s",
 748                             isrouter ? "R" : "",
 749                             (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
 750                 } else {
 751                         sin = (struct sockaddr_in6 *)
 752                             (sdl->sdl_len + (char *)sdl);
 753 #if 0   /* W and P are mystery even for us */
 754                         snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s",
 755                             isrouter ? "R" : "",
 756                             !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "",
 757                             (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "",
 758                             (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
 759 #else
 760                         snprintf(flgbuf, sizeof(flgbuf), "%s%s",
 761                             isrouter ? "R" : "",
 762                             (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
 763 #endif
 764                 }
 765                 printf(" %s", flgbuf);
 766
 767                 if (prbs)
 768                         printf(" %d", prbs);
 769
 770                 printf("\n");
 771         }
 772         if (buf != NULL)
 773                 free(buf);
 774
 775         if (repeat) {
 776                 printf("\n");
 777                 fflush(stdout);
 778                 sleep(repeat);
 779                 goto again;
 780         }
 781 }
 782
 783 static struct in6_nbrinfo *
 784 getnbrinfo(addr, ifindex, warning)
 785         struct in6_addr *addr;
 786         int ifindex;
 787         int warning;
 788 {
 789         static struct in6_nbrinfo nbi;
 790         int s;
 791
 792         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
 793                 err(1, "socket");
 794
 795         bzero(&nbi, sizeof(nbi));
 796         if_indextoname(ifindex, nbi.ifname);
 797         nbi.addr = *addr;
 798         if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) {
 799                 if (warning)
 800                         warn("ioctl(SIOCGNBRINFO_IN6)");
 801                 close(s);
 802                 return(NULL);
 803         }
 804
 805         close(s);
 806         return(&nbi);
 807 }
 808
 809 static char *
 810 ether_str(sdl)
 811         struct sockaddr_dl *sdl;
 812 {
 813         static char hbuf[NI_MAXHOST];
 814         u_char *cp;
 815
 816         if (sdl->sdl_alen) {
 817                 cp = (u_char *)LLADDR(sdl);
 818                 snprintf(hbuf, sizeof(hbuf), "%x:%x:%x:%x:%x:%x",
 819                     cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]);
 820         } else
 821                 snprintf(hbuf, sizeof(hbuf), "(incomplete)");
 822
 823         return(hbuf);
 824 }
 825
 826 int
 827 ndp_ether_aton(a, n)
 828         char *a;
 829         u_char *n;
 830 {
 831         int i, o[6];
 832
 833         i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2],
 834             &o[3], &o[4], &o[5]);
 835         if (i != 6) {
 836                 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a);
 837                 return (1);
 838         }
 839         for (i = 0; i < 6; i++)
 840                 n[i] = o[i];
 841         return (0);
 842 }
 843
 844 void
 845 usage()
 846 {
 847         printf("usage: ndp [-nt] hostname\n");
 848         printf("       ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n");
 849         printf("       ndp [-nt] -A wait\n");
 850         printf("       ndp [-nt] -d hostname\n");
 851         printf("       ndp [-nt] -f filename\n");
 852         printf("       ndp [-nt] -i interface [flags...]\n");
 853 #ifdef SIOCSDEFIFACE_IN6
 854         printf("       ndp [-nt] -I [interface|delete]\n");
 855 #endif
 856         printf("       ndp [-nt] -s nodename etheraddr [temp] [proxy]\n");
 857         exit(1);
 858 }
 859
 860 int
 861 rtmsg(cmd)
 862         int cmd;
 863 {
 864         static int seq;
 865         int rlen;
 866         register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
 867         register char *cp = m_rtmsg.m_space;
 868         register int l;
 869
 870         errno = 0;
 871         if (cmd == RTM_DELETE)
 872                 goto doit;
 873         bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
 874         rtm->rtm_flags = flags;
 875         rtm->rtm_version = RTM_VERSION;
 876
 877         switch (cmd) {
 878         default:
 879                 fprintf(stderr, "ndp: internal wrong cmd\n");
 880                 exit(1);
 881         case RTM_ADD:
 882                 rtm->rtm_addrs |= RTA_GATEWAY;
 883                 if (expire_time) {
 884                         rtm->rtm_rmx.rmx_expire = expire_time;
 885                         rtm->rtm_inits = RTV_EXPIRE;
 886                 }
 887                 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC);
 888                 if (rtm->rtm_flags & RTF_ANNOUNCE) {
 889                         rtm->rtm_flags &= ~RTF_HOST;
 890                         rtm->rtm_addrs |= RTA_NETMASK;
 891                 }
 892                 /* FALLTHROUGH */
 893         case RTM_GET:
 894                 rtm->rtm_addrs |= RTA_DST;
 895         }
 896 #define NEXTADDR(w, s) \
 897         if (rtm->rtm_addrs & (w)) { \
 898                 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);}
 899
 900         NEXTADDR(RTA_DST, sin_m);
 901         NEXTADDR(RTA_GATEWAY, sdl_m);
 902         memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr));
 903         NEXTADDR(RTA_NETMASK, so_mask);
 904
 905         rtm->rtm_msglen = cp - (char *)&m_rtmsg;
 906 doit:
 907         l = rtm->rtm_msglen;
 908         rtm->rtm_seq = ++seq;
 909         rtm->rtm_type = cmd;
 910         if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
 911                 if (errno != ESRCH || cmd != RTM_DELETE) {
 912                         err(1, "writing to routing socket");
 913                         /* NOTREACHED */
 914                 }
 915         }
 916         do {
 917                 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
 918         } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
 919         if (l < 0)
 920                 (void) fprintf(stderr, "ndp: read from routing socket: %s\n",
 921                     strerror(errno));
 922         return (0);
 923 }
 924
 925 void
 926 ifinfo(ifname, argc, argv)
 927         char *ifname;
 928         int argc;
 929         char **argv;
 930 {
 931         struct in6_ndireq nd;
 932         int i, s;
 933         u_int32_t newflags;
 934 #ifdef IPV6CTL_USETEMPADDR
 935         u_int8_t nullbuf[8];
 936 #endif
 937
 938         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
 939                 err(1, "socket");
 940                 /* NOTREACHED */
 941         }
 942         bzero(&nd, sizeof(nd));
 943         strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
 944         if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
 945                 err(1, "ioctl(SIOCGIFINFO_IN6)");
 946                 /* NOTREACHED */
 947         }
 948 #define ND nd.ndi
 949         newflags = ND.flags;
 950         for (i = 0; i < argc; i++) {
 951                 int clear = 0;
 952                 char *cp = argv[i];
 953
 954                 if (*cp == '-') {
 955                         clear = 1;
 956                         cp++;
 957                 }
 958
 959 #define SETFLAG(s, f) \
 960         do {\
 961                 if (strcmp(cp, (s)) == 0) {\
 962                         if (clear)\
 963                                 newflags &= ~(f);\
 964                         else\
 965                                 newflags |= (f);\
 966                 }\
 967         } while (0)
 968                 SETFLAG("nud", ND6_IFF_PERFORMNUD);
 969 #ifdef ND6_IFF_ACCEPT_RTADV
 970                 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV);
 971 #endif
 972 #ifdef ND6_IFF_PREFER_SOURCE
 973                 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE);
 974 #endif
 975
 976                 ND.flags = newflags;
 977                 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) {
 978                         err(1, "ioctl(SIOCSIFINFO_FLAGS)");
 979                         /* NOTREACHED */
 980                 }
 981 #undef SETFLAG
 982         }
 983
 984         if (!ND.initialized) {
 985                 errx(1, "%s: not initialized yet", ifname);
 986                 /* NOTREACHED */
 987         }
 988
 989         printf("linkmtu=%d", ND.linkmtu);
 990         printf(", maxmtu=%d", ND.maxmtu);
 991         printf(", curhlim=%d", ND.chlim);
 992         printf(", basereachable=%ds%dms",
 993             ND.basereachable / 1000, ND.basereachable % 1000);
 994         printf(", reachable=%ds", ND.reachable);
 995         printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
 996 #ifdef IPV6CTL_USETEMPADDR
 997         memset(nullbuf, 0, sizeof(nullbuf));
 998         if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) {
 999                 int j;
1000                 u_int8_t *rbuf;
1001
1002                 for (i = 0; i < 3; i++) {
1003                         switch (i) {
1004                         case 0:
1005                                 printf("\nRandom seed(0): ");
1006                                 rbuf = ND.randomseed0;
1007                                 break;
1008                         case 1:
1009                                 printf("\nRandom seed(1): ");
1010                                 rbuf = ND.randomseed1;
1011                                 break;
1012                         case 2:
1013                                 printf("\nRandom ID:      ");
1014                                 rbuf = ND.randomid;
1015                                 break;
1016                         }
1017                         for (j = 0; j < 8; j++)
1018                                 printf("%02x", rbuf[j]);
1019                 }
1020         }
1021 #endif
1022         if (ND.flags) {
1023                 printf("\nFlags: ");
1024                 if ((ND.flags & ND6_IFF_PERFORMNUD))
1025                         printf("nud ");
1026 #ifdef ND6_IFF_ACCEPT_RTADV
1027                 if ((ND.flags & ND6_IFF_ACCEPT_RTADV))
1028                         printf("accept_rtadv ");
1029 #endif
1030 #ifdef ND6_IFF_PREFER_SOURCE
1031                 if ((ND.flags & ND6_IFF_PREFER_SOURCE))
1032                         printf("prefer_source ");
1033 #endif
1034         }
1035         putc('\n', stdout);
1036 #undef ND
1037
1038         close(s);
1039 }
1040
1041 #ifndef ND_RA_FLAG_RTPREF_MASK  /* XXX: just for compilation on *BSD release */
1042 #define ND_RA_FLAG_RTPREF_MASK  0x18 /* 00011000 */
1043 #endif
1044
1045 void
1046 rtrlist()
1047 {
1048 #ifdef ICMPV6CTL_ND6_DRLIST
1049         int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST };
1050         char *buf;
1051         struct in6_defrouter *p, *ep;
1052         size_t l;
1053         struct timeval time;
1054
1055         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1056                 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1057                 /*NOTREACHED*/
1058         }
1059         buf = malloc(l);
1060         if (!buf) {
1061                 err(1, "malloc");
1062                 /*NOTREACHED*/
1063         }
1064         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1065                 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1066                 /*NOTREACHED*/
1067         }
1068
1069         ep = (struct in6_defrouter *)(buf + l);
1070         for (p = (struct in6_defrouter *)buf; p < ep; p++) {
1071                 int rtpref;
1072
1073                 if (getnameinfo((struct sockaddr *)&p->rtaddr,
1074                     p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0,
1075                     (nflag ? NI_NUMERICHOST : 0)) != 0)
1076                         strlcpy(host_buf, "?", sizeof(host_buf));
1077
1078                 printf("%s if=%s", host_buf,
1079                     if_indextoname(p->if_index, ifix_buf));
1080                 printf(", flags=%s%s",
1081                     p->flags & ND_RA_FLAG_MANAGED ? "M" : "",
1082                     p->flags & ND_RA_FLAG_OTHER   ? "O" : "");
1083                 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff;
1084                 printf(", pref=%s", rtpref_str[rtpref]);
1085
1086                 gettimeofday(&time, 0);
1087                 if (p->expire == 0)
1088                         printf(", expire=Never\n");
1089                 else
1090                         printf(", expire=%s\n",
1091                             sec2str(p->expire - time.tv_sec));
1092         }
1093         free(buf);
1094 #else
1095         struct in6_drlist dr;
1096         int s, i;
1097         struct timeval time;
1098
1099         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1100                 err(1, "socket");
1101                 /* NOTREACHED */
1102         }
1103         bzero(&dr, sizeof(dr));
1104         strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */
1105         if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
1106                 err(1, "ioctl(SIOCGDRLST_IN6)");
1107                 /* NOTREACHED */
1108         }
1109 #define DR dr.defrouter[i]
1110         for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) {
1111                 struct sockaddr_in6 sin6;
1112
1113                 bzero(&sin6, sizeof(sin6));
1114                 sin6.sin6_family = AF_INET6;
1115                 sin6.sin6_len = sizeof(sin6);
1116                 sin6.sin6_addr = DR.rtaddr;
1117                 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf,
1118                     sizeof(host_buf), NULL, 0,
1119                     (nflag ? NI_NUMERICHOST : 0));
1120
1121                 printf("%s if=%s", host_buf,
1122                     if_indextoname(DR.if_index, ifix_buf));
1123                 printf(", flags=%s%s",
1124                     DR.flags & ND_RA_FLAG_MANAGED ? "M" : "",
1125                     DR.flags & ND_RA_FLAG_OTHER   ? "O" : "");
1126                 gettimeofday(&time, 0);
1127                 if (DR.expire == 0)
1128                         printf(", expire=Never\n");
1129                 else
1130                         printf(", expire=%s\n",
1131                             sec2str(DR.expire - time.tv_sec));
1132         }
1133 #undef DR
1134         close(s);
1135 #endif
1136 }
1137
1138 void
1139 plist()
1140 {
1141 #ifdef ICMPV6CTL_ND6_PRLIST
1142         int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST };
1143         char *buf;
1144         struct in6_prefix *p, *ep, *n;
1145         struct sockaddr_in6 *advrtr;
1146         size_t l;
1147         struct timeval time;
1148         const int niflags = NI_NUMERICHOST;
1149         int ninflags = nflag ? NI_NUMERICHOST : 0;
1150         char namebuf[NI_MAXHOST];
1151
1152         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1153                 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1154                 /*NOTREACHED*/
1155         }
1156         buf = malloc(l);
1157         if (!buf) {
1158                 err(1, "malloc");
1159                 /*NOTREACHED*/
1160         }
1161         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1162                 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1163                 /*NOTREACHED*/
1164         }
1165
1166         ep = (struct in6_prefix *)(buf + l);
1167         for (p = (struct in6_prefix *)buf; p < ep; p = n) {
1168                 advrtr = (struct sockaddr_in6 *)(p + 1);
1169                 n = (struct in6_prefix *)&advrtr[p->advrtrs];
1170
1171                 if (getnameinfo((struct sockaddr *)&p->prefix,
1172                     p->prefix.sin6_len, namebuf, sizeof(namebuf),
1173                     NULL, 0, niflags) != 0)
1174                         strlcpy(namebuf, "?", sizeof(namebuf));
1175                 printf("%s/%d if=%s\n", namebuf, p->prefixlen,
1176                     if_indextoname(p->if_index, ifix_buf));
1177
1178                 gettimeofday(&time, 0);
1179                 /*
1180                  * meaning of fields, especially flags, is very different
1181                  * by origin.  notify the difference to the users.
1182                  */
1183                 printf("flags=%s%s%s%s%s",
1184                     p->raflags.onlink ? "L" : "",
1185                     p->raflags.autonomous ? "A" : "",
1186                     (p->flags & NDPRF_ONLINK) != 0 ? "O" : "",
1187                     (p->flags & NDPRF_DETACHED) != 0 ? "D" : "",
1188 #ifdef NDPRF_HOME
1189                     (p->flags & NDPRF_HOME) != 0 ? "H" : ""
1190 #else
1191                     ""
1192 #endif
1193                     );
1194                 if (p->vltime == ND6_INFINITE_LIFETIME)
1195                         printf(" vltime=infinity");
1196                 else
1197                         printf(" vltime=%lu", (unsigned long)p->vltime);
1198                 if (p->pltime == ND6_INFINITE_LIFETIME)
1199                         printf(", pltime=infinity");
1200                 else
1201                         printf(", pltime=%lu", (unsigned long)p->pltime);
1202                 if (p->expire == 0)
1203                         printf(", expire=Never");
1204                 else if (p->expire >= time.tv_sec)
1205                         printf(", expire=%s",
1206                             sec2str(p->expire - time.tv_sec));
1207                 else
1208                         printf(", expired");
1209                 printf(", ref=%d", p->refcnt);
1210                 printf("\n");
1211                 /*
1212                  * "advertising router" list is meaningful only if the prefix
1213                  * information is from RA.
1214                  */
1215                 if (p->advrtrs) {
1216                         int j;
1217                         struct sockaddr_in6 *sin6;
1218
1219                         sin6 = advrtr;
1220                         printf("  advertised by\n");
1221                         for (j = 0; j < p->advrtrs; j++) {
1222                                 struct in6_nbrinfo *nbi;
1223
1224                                 if (getnameinfo((struct sockaddr *)sin6,
1225                                     sin6->sin6_len, namebuf, sizeof(namebuf),
1226                                     NULL, 0, ninflags) != 0)
1227                                         strlcpy(namebuf, "?", sizeof(namebuf));
1228                                 printf("    %s", namebuf);
1229
1230                                 nbi = getnbrinfo(&sin6->sin6_addr,
1231                                     p->if_index, 0);
1232                                 if (nbi) {
1233                                         switch (nbi->state) {
1234                                         case ND6_LLINFO_REACHABLE:
1235                                         case ND6_LLINFO_STALE:
1236                                         case ND6_LLINFO_DELAY:
1237                                         case ND6_LLINFO_PROBE:
1238                                                 printf(" (reachable)\n");
1239                                                 break;
1240                                         default:
1241                                                 printf(" (unreachable)\n");
1242                                         }
1243                                 } else
1244                                         printf(" (no neighbor state)\n");
1245                                 sin6++;
1246                         }
1247                 } else
1248                         printf("  No advertising router\n");
1249         }
1250         free(buf);
1251 #else
1252         struct in6_prlist pr;
1253         int s, i;
1254         struct timeval time;
1255
1256         gettimeofday(&time, 0);
1257
1258         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1259                 err(1, "socket");
1260                 /* NOTREACHED */
1261         }
1262         bzero(&pr, sizeof(pr));
1263         strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */
1264         if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
1265                 err(1, "ioctl(SIOCGPRLST_IN6)");
1266                 /* NOTREACHED */
1267         }
1268 #define PR pr.prefix[i]
1269         for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
1270                 struct sockaddr_in6 p6;
1271                 char namebuf[NI_MAXHOST];
1272                 int niflags;
1273
1274 #ifdef NDPRF_ONLINK
1275                 p6 = PR.prefix;
1276 #else
1277                 memset(&p6, 0, sizeof(p6));
1278                 p6.sin6_family = AF_INET6;
1279                 p6.sin6_len = sizeof(p6);
1280                 p6.sin6_addr = PR.prefix;
1281 #endif
1282
1283                 /*
1284                  * copy link index to sin6_scope_id field.
1285                  * XXX: KAME specific.
1286                  */
1287                 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) {
1288                         u_int16_t linkid;
1289
1290                         memcpy(&linkid, &p6.sin6_addr.s6_addr[2],
1291                             sizeof(linkid));
1292                         linkid = ntohs(linkid);
1293                         p6.sin6_scope_id = linkid;
1294                         p6.sin6_addr.s6_addr[2] = 0;
1295                         p6.sin6_addr.s6_addr[3] = 0;
1296                 }
1297
1298                 niflags = NI_NUMERICHOST;
1299                 if (getnameinfo((struct sockaddr *)&p6,
1300                     sizeof(p6), namebuf, sizeof(namebuf),
1301                     NULL, 0, niflags)) {
1302                         warnx("getnameinfo failed");
1303                         continue;
1304                 }
1305                 printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
1306                     if_indextoname(PR.if_index, ifix_buf));
1307
1308                 gettimeofday(&time, 0);
1309                 /*
1310                  * meaning of fields, especially flags, is very different
1311                  * by origin.  notify the difference to the users.
1312                  */
1313 #if 0
1314                 printf("  %s",
1315                     PR.origin == PR_ORIG_RA ? "" : "advertise: ");
1316 #endif
1317 #ifdef NDPRF_ONLINK
1318                 printf("flags=%s%s%s%s%s",
1319                     PR.raflags.onlink ? "L" : "",
1320                     PR.raflags.autonomous ? "A" : "",
1321                     (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "",
1322                     (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "",
1323 #ifdef NDPRF_HOME
1324                     (PR.flags & NDPRF_HOME) != 0 ? "H" : ""
1325 #else
1326                     ""
1327 #endif
1328                     );
1329 #else
1330                 printf("flags=%s%s",
1331                     PR.raflags.onlink ? "L" : "",
1332                     PR.raflags.autonomous ? "A" : "");
1333 #endif
1334                 if (PR.vltime == ND6_INFINITE_LIFETIME)
1335                         printf(" vltime=infinity");
1336                 else
1337                         printf(" vltime=%lu", PR.vltime);
1338                 if (PR.pltime == ND6_INFINITE_LIFETIME)
1339                         printf(", pltime=infinity");
1340                 else
1341                         printf(", pltime=%lu", PR.pltime);
1342                 if (PR.expire == 0)
1343                         printf(", expire=Never");
1344                 else if (PR.expire >= time.tv_sec)
1345                         printf(", expire=%s",
1346                             sec2str(PR.expire - time.tv_sec));
1347                 else
1348                         printf(", expired");
1349 #ifdef NDPRF_ONLINK
1350                 printf(", ref=%d", PR.refcnt);
1351 #endif
1352 #if 0
1353                 switch (PR.origin) {
1354                 case PR_ORIG_RA:
1355                         printf(", origin=RA");
1356                         break;
1357                 case PR_ORIG_RR:
1358                         printf(", origin=RR");
1359                         break;
1360                 case PR_ORIG_STATIC:
1361                         printf(", origin=static");
1362                         break;
1363                 case PR_ORIG_KERNEL:
1364                         printf(", origin=kernel");
1365                         break;
1366                 default:
1367                         printf(", origin=?");
1368                         break;
1369                 }
1370 #endif
1371                 printf("\n");
1372                 /*
1373                  * "advertising router" list is meaningful only if the prefix
1374                  * information is from RA.
1375                  */
1376                 if (0 &&        /* prefix origin is almost obsolted */
1377                     PR.origin != PR_ORIG_RA)
1378                         ;
1379                 else if (PR.advrtrs) {
1380                         int j;
1381                         printf("  advertised by\n");
1382                         for (j = 0; j < PR.advrtrs; j++) {
1383                                 struct sockaddr_in6 sin6;
1384                                 struct in6_nbrinfo *nbi;
1385
1386                                 bzero(&sin6, sizeof(sin6));
1387                                 sin6.sin6_family = AF_INET6;
1388                                 sin6.sin6_len = sizeof(sin6);
1389                                 sin6.sin6_addr = PR.advrtr[j];
1390                                 sin6.sin6_scope_id = PR.if_index; /* XXX */
1391                                 getnameinfo((struct sockaddr *)&sin6,
1392                                     sin6.sin6_len, host_buf,
1393                                     sizeof(host_buf), NULL, 0,
1394                                     (nflag ? NI_NUMERICHOST : 0));
1395                                 printf("    %s", host_buf);
1396
1397                                 nbi = getnbrinfo(&sin6.sin6_addr,
1398                                     PR.if_index, 0);
1399                                 if (nbi) {
1400                                         switch (nbi->state) {
1401                                         case ND6_LLINFO_REACHABLE:
1402                                         case ND6_LLINFO_STALE:
1403                                         case ND6_LLINFO_DELAY:
1404                                         case ND6_LLINFO_PROBE:
1405                                                  printf(" (reachable)\n");
1406                                                  break;
1407                                         default:
1408                                                  printf(" (unreachable)\n");
1409                                         }
1410                                 } else
1411                                         printf(" (no neighbor state)\n");
1412                         }
1413                         if (PR.advrtrs > DRLSTSIZ)
1414                                 printf("    and %d routers\n",
1415                                     PR.advrtrs - DRLSTSIZ);
1416                 } else
1417                         printf("  No advertising router\n");
1418         }
1419 #undef PR
1420         close(s);
1421 #endif
1422 }
1423
1424 void
1425 pfx_flush()
1426 {
1427         char dummyif[IFNAMSIZ+8];
1428         int s;
1429
1430         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1431                 err(1, "socket");
1432         strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1433         if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
1434                 err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
1435 }
1436
1437 void
1438 rtr_flush()
1439 {
1440         char dummyif[IFNAMSIZ+8];
1441         int s;
1442
1443         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1444                 err(1, "socket");
1445         strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1446         if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
1447                 err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
1448
1449         close(s);
1450 }
1451
1452 void
1453 harmonize_rtr()
1454 {
1455         char dummyif[IFNAMSIZ+8];
1456         int s;
1457
1458         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1459                 err(1, "socket");
1460         strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1461         if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
1462                 err(1, "ioctl(SIOCSNDFLUSH_IN6)");
1463
1464         close(s);
1465 }
1466
1467 #ifdef SIOCSDEFIFACE_IN6        /* XXX: check SIOCGDEFIFACE_IN6 as well? */
1468 static void
1469 setdefif(ifname)
1470         char *ifname;
1471 {
1472         struct in6_ndifreq ndifreq;
1473         unsigned int ifindex;
1474
1475         if (strcasecmp(ifname, "delete") == 0)
1476                 ifindex = 0;
1477         else {
1478                 if ((ifindex = if_nametoindex(ifname)) == 0)
1479                         err(1, "failed to resolve i/f index for %s", ifname);
1480         }
1481
1482         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1483                 err(1, "socket");
1484
1485         strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1486         ndifreq.ifindex = ifindex;
1487
1488         if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1489                 err(1, "ioctl(SIOCSDEFIFACE_IN6)");
1490
1491         close(s);
1492 }
1493
1494 static void
1495 getdefif()
1496 {
1497         struct in6_ndifreq ndifreq;
1498         char ifname[IFNAMSIZ+8];
1499
1500         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1501                 err(1, "socket");
1502
1503         memset(&ndifreq, 0, sizeof(ndifreq));
1504         strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1505
1506         if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1507                 err(1, "ioctl(SIOCGDEFIFACE_IN6)");
1508
1509         if (ndifreq.ifindex == 0)
1510                 printf("No default interface.\n");
1511         else {
1512                 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL)
1513                         err(1, "failed to resolve ifname for index %lu",
1514                             ndifreq.ifindex);
1515                 printf("ND default interface = %s\n", ifname);
1516         }
1517
1518         close(s);
1519 }
1520 #endif
1521
1522 static char *
1523 sec2str(total)
1524         time_t total;
1525 {
1526         static char result[256];
1527         int days, hours, mins, secs;
1528         int first = 1;
1529         char *p = result;
1530         char *ep = &result[sizeof(result)];
1531         int n;
1532
1533         days = total / 3600 / 24;
1534         hours = (total / 3600) % 24;
1535         mins = (total / 60) % 60;
1536         secs = total % 60;
1537
1538         if (days) {
1539                 first = 0;
1540                 n = snprintf(p, ep - p, "%dd", days);
1541                 if (n < 0 || n >= ep - p)
1542                         return "?";
1543                 p += n;
1544         }
1545         if (!first || hours) {
1546                 first = 0;
1547                 n = snprintf(p, ep - p, "%dh", hours);
1548                 if (n < 0 || n >= ep - p)
1549                         return "?";
1550                 p += n;
1551         }
1552         if (!first || mins) {
1553                 first = 0;
1554                 n = snprintf(p, ep - p, "%dm", mins);
1555                 if (n < 0 || n >= ep - p)
1556                         return "?";
1557                 p += n;
1558         }
1559         snprintf(p, ep - p, "%ds", secs);
1560
1561         return(result);
1562 }
1563
1564 /*
1565  * Print the timestamp
1566  * from tcpdump/util.c
1567  */
1568 static void
1569 ts_print(tvp)
1570         const struct timeval *tvp;
1571 {
1572         int s;
1573
1574         /* Default */
1575         s = (tvp->tv_sec + thiszone) % 86400;
1576         (void)printf("%02d:%02d:%02d.%06u ",
1577             s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec);
1578 }