6/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 rtr_flush __P((void));
 146 void harmonize_rtr __P((void));
 147 #ifdef SIOCSDEFIFACE_IN6        /* XXX: check SIOCGDEFIFACE_IN6 as well? */
 148 static void getdefif __P((void));
 149 static void setdefif __P((char *));
 150 #endif
 151 static char *sec2str __P((time_t));
 152 static char *ether_str __P((struct sockaddr_dl *));
 153 static void ts_print __P((const struct timeval *));
 154
 155 #ifdef ICMPV6CTL_ND6_DRLIST
 156 static char *rtpref_str[] = {
 157         "medium",               /* 00 */
 158         "high",                 /* 01 */
 159         "rsv",                  /* 10 */
 160         "low"                   /* 11 */
 161 };
 162 #endif
 163
 164 int mode = 0;
 165 char *arg = NULL;
 166
 167 int
 168 main(argc, argv)
 169         int argc;
 170         char **argv;
 171 {
 172         int ch;
 173
 174         pid = getpid();
 175         thiszone = gmt2local(0);
 176         while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1)
 177                 switch (ch) {
 178                 case 'a':
 179                 case 'c':
 180                 case 'p':
 181                 case 'r':
 182                 case 'H':
 183                 case 'P':
 184                 case 'R':
 185                 case 's':
 186                 case 'I':
 187                         if (mode) {
 188                                 usage();
 189                                 /*NOTREACHED*/
 190                         }
 191                         mode = ch;
 192                         arg = NULL;
 193                         break;
 194                 case 'd':
 195                 case 'f':
 196                 case 'i' :
 197                         if (mode) {
 198                                 usage();
 199                                 /*NOTREACHED*/
 200                         }
 201                         mode = ch;
 202                         arg = optarg;
 203                         break;
 204                 case 'n':
 205                         nflag = 1;
 206                         break;
 207                 case 't':
 208                         tflag = 1;
 209                         break;
 210                 case 'A':
 211                         if (mode) {
 212                                 usage();
 213                                 /*NOTREACHED*/
 214                         }
 215                         mode = 'a';
 216                         repeat = atoi(optarg);
 217                         if (repeat < 0) {
 218                                 usage();
 219                                 /*NOTREACHED*/
 220                         }
 221                         break;
 222                 default:
 223                         usage();
 224                 }
 225
 226         argc -= optind;
 227         argv += optind;
 228
 229         switch (mode) {
 230         case 'a':
 231         case 'c':
 232                 if (argc != 0) {
 233                         usage();
 234                         /*NOTREACHED*/
 235                 }
 236                 dump(0, mode == 'c');
 237                 break;
 238         case 'd':
 239                 if (argc != 0) {
 240                         usage();
 241                         /*NOTREACHED*/
 242                 }
 243                 delete(arg);
 244                 break;
 245         case 'I':
 246 #ifdef SIOCSDEFIFACE_IN6        /* XXX: check SIOCGDEFIFACE_IN6 as well? */
 247                 if (argc > 1) {
 248                         usage();
 249                         /*NOTREACHED*/
 250                 } else if (argc == 1) {
 251                         if (strcmp(*argv, "delete") == 0 ||
 252                             if_nametoindex(*argv))
 253                                 setdefif(*argv);
 254                         else
 255                                 errx(1, "invalid interface %s", *argv);
 256                 }
 257                 getdefif(); /* always call it to print the result */
 258                 break;
 259 #else
 260                 errx(1, "not supported yet");
 261                 /*NOTREACHED*/
 262 #endif
 263         case 'p':
 264                 if (argc != 0) {
 265                         usage();
 266                         /*NOTREACHED*/
 267                 }
 268                 plist();
 269                 break;
 270         case 'i':
 271                 ifinfo(arg, argc, argv);
 272                 break;
 273         case 'r':
 274                 if (argc != 0) {
 275                         usage();
 276                         /*NOTREACHED*/
 277                 }
 278                 rtrlist();
 279                 break;
 280         case 's':
 281                 if (argc < 2 || argc > 4)
 282                         usage();
 283                 exit(set(argc, argv) ? 1 : 0);
 284         case 'H':
 285                 if (argc != 0) {
 286                         usage();
 287                         /*NOTREACHED*/
 288                 }
 289                 harmonize_rtr();
 290                 break;
 291         case 'P':
 292                 if (argc != 0) {
 293                         usage();
 294                         /*NOTREACHED*/
 295                 }
 296                 pfx_flush();
 297                 break;
 298         case 'R':
 299                 if (argc != 0) {
 300                         usage();
 301                         /*NOTREACHED*/
 302                 }
 303                 rtr_flush();
 304                 break;
 305         case 0:
 306                 if (argc != 1) {
 307                         usage();
 308                         /*NOTREACHED*/
 309                 }
 310                 get(argv[0]);
 311                 break;
 312         }
 313         exit(0);
 314 }
 315
 316 /*
 317  * Process a file to set standard ndp entries
 318  */
 319 int
 320 file(name)
 321         char *name;
 322 {
 323         FILE *fp;
 324         int i, retval;
 325         char line[100], arg[5][50], *args[5];
 326
 327         if ((fp = fopen(name, "r")) == NULL) {
 328                 fprintf(stderr, "ndp: cannot open %s\n", name);
 329                 exit(1);
 330         }
 331         args[0] = &arg[0][0];
 332         args[1] = &arg[1][0];
 333         args[2] = &arg[2][0];
 334         args[3] = &arg[3][0];
 335         args[4] = &arg[4][0];
 336         retval = 0;
 337         while (fgets(line, 100, fp) != NULL) {
 338                 i = sscanf(line, "%49s %49s %49s %49s %49s",
 339                     arg[0], arg[1], arg[2], arg[3], arg[4]);
 340                 if (i < 2) {
 341                         fprintf(stderr, "ndp: bad line: %s\n", line);
 342                         retval = 1;
 343                         continue;
 344                 }
 345                 if (set(i, args))
 346                         retval = 1;
 347         }
 348         fclose(fp);
 349         return (retval);
 350 }
 351
 352 void
 353 getsocket()
 354 {
 355         if (s < 0) {
 356                 s = socket(PF_ROUTE, SOCK_RAW, 0);
 357                 if (s < 0) {
 358                         err(1, "socket");
 359                         /* NOTREACHED */
 360                 }
 361         }
 362 }
 363
 364 struct  sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 };
 365 struct  sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m;
 366 struct  sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m;
 367 int     expire_time, flags, found_entry;
 368 struct  {
 369         struct  rt_msghdr m_rtm;
 370         char    m_space[512];
 371 }       m_rtmsg;
 372
 373 /*
 374  * Set an individual neighbor cache entry
 375  */
 376 int
 377 set(argc, argv)
 378         int argc;
 379         char **argv;
 380 {
 381         register struct sockaddr_in6 *sin = &sin_m;
 382         register struct sockaddr_dl *sdl;
 383         register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
 384         struct addrinfo hints, *res;
 385         int gai_error;
 386         u_char *ea;
 387         char *host = argv[0], *eaddr = argv[1];
 388
 389         getsocket();
 390         argc -= 2;
 391         argv += 2;
 392         sdl_m = blank_sdl;
 393         sin_m = blank_sin;
 394
 395         bzero(&hints, sizeof(hints));
 396         hints.ai_family = AF_INET6;
 397         gai_error = getaddrinfo(host, NULL, &hints, &res);
 398         if (gai_error) {
 399                 fprintf(stderr, "ndp: %s: %s\n", host,
 400                         gai_strerror(gai_error));
 401                 return 1;
 402         }
 403         sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
 404 #ifdef __KAME__
 405         if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
 406                 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
 407                     htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
 408         }
 409 #endif
 410         ea = (u_char *)LLADDR(&sdl_m);
 411         if (ndp_ether_aton(eaddr, ea) == 0)
 412                 sdl_m.sdl_alen = 6;
 413         flags = expire_time = 0;
 414         while (argc-- > 0) {
 415                 if (strncmp(argv[0], "temp", 4) == 0) {
 416                         struct timeval time;
 417
 418                         gettimeofday(&time, 0);
 419                         expire_time = time.tv_sec + 20 * 60;
 420                 } else if (strncmp(argv[0], "proxy", 5) == 0)
 421                         flags |= RTF_ANNOUNCE;
 422                 argv++;
 423         }
 424         if (rtmsg(RTM_GET) < 0) {
 425                 errx(1, "RTM_GET(%s) failed", host);
 426                 /* NOTREACHED */
 427         }
 428         sin = (struct sockaddr_in6 *)(rtm + 1);
 429         sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
 430         if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
 431                 if (sdl->sdl_family == AF_LINK &&
 432                     (rtm->rtm_flags & RTF_LLINFO) &&
 433                     !(rtm->rtm_flags & RTF_GATEWAY)) {
 434                         switch (sdl->sdl_type) {
 435                         case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
 436                         case IFT_ISO88024: case IFT_ISO88025:
 437                                 goto overwrite;
 438                         }
 439                 }
 440                 /*
 441                  * IPv4 arp command retries with sin_other = SIN_PROXY here.
 442                  */
 443                 fprintf(stderr, "set: cannot configure a new entry\n");
 444                 return 1;
 445         }
 446
 447 overwrite:
 448         if (sdl->sdl_family != AF_LINK) {
 449                 printf("cannot intuit interface index and type for %s\n", host);
 450                 return (1);
 451         }
 452         sdl_m.sdl_type = sdl->sdl_type;
 453         sdl_m.sdl_index = sdl->sdl_index;
 454         return (rtmsg(RTM_ADD));
 455 }
 456
 457 /*
 458  * Display an individual neighbor cache entry
 459  */
 460 void
 461 get(host)
 462         char *host;
 463 {
 464         struct sockaddr_in6 *sin = &sin_m;
 465         struct addrinfo hints, *res;
 466         int gai_error;
 467
 468         sin_m = blank_sin;
 469         bzero(&hints, sizeof(hints));
 470         hints.ai_family = AF_INET6;
 471         gai_error = getaddrinfo(host, NULL, &hints, &res);
 472         if (gai_error) {
 473                 fprintf(stderr, "ndp: %s: %s\n", host,
 474                     gai_strerror(gai_error));
 475                 return;
 476         }
 477         sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
 478 #ifdef __KAME__
 479         if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
 480                 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
 481                     htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
 482         }
 483 #endif
 484         dump(&sin->sin6_addr, 0);
 485         if (found_entry == 0) {
 486                 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
 487                     sizeof(host_buf), NULL ,0,
 488                     (nflag ? NI_NUMERICHOST : 0));
 489                 printf("%s (%s) -- no entry\n", host, host_buf);
 490                 exit(1);
 491         }
 492 }
 493
 494 /*
 495  * Delete a neighbor cache entry
 496  */
 497 int
 498 delete(host)
 499         char *host;
 500 {
 501         struct sockaddr_in6 *sin = &sin_m;
 502         register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
 503         struct sockaddr_dl *sdl;
 504         struct addrinfo hints, *res;
 505         int gai_error;
 506
 507         getsocket();
 508         sin_m = blank_sin;
 509
 510         bzero(&hints, sizeof(hints));
 511         hints.ai_family = AF_INET6;
 512         gai_error = getaddrinfo(host, NULL, &hints, &res);
 513         if (gai_error) {
 514                 fprintf(stderr, "ndp: %s: %s\n", host,
 515                     gai_strerror(gai_error));
 516                 return 1;
 517         }
 518         sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
 519 #ifdef __KAME__
 520         if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
 521                 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
 522                     htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
 523         }
 524 #endif
 525         if (rtmsg(RTM_GET) < 0) {
 526                 errx(1, "RTM_GET(%s) failed", host);
 527                 /* NOTREACHED */
 528         }
 529         sin = (struct sockaddr_in6 *)(rtm + 1);
 530         sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
 531         if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
 532                 if (sdl->sdl_family == AF_LINK &&
 533                     (rtm->rtm_flags & RTF_LLINFO) &&
 534                     !(rtm->rtm_flags & RTF_GATEWAY)) {
 535                         goto delete;
 536                 }
 537                 /*
 538                  * IPv4 arp command retries with sin_other = SIN_PROXY here.
 539                  */
 540                 fprintf(stderr, "delete: cannot delete non-NDP entry\n");
 541                 return 1;
 542         }
 543
 544 delete:
 545         if (sdl->sdl_family != AF_LINK) {
 546                 printf("cannot locate %s\n", host);
 547                 return (1);
 548         }
 549         if (rtmsg(RTM_DELETE) == 0) {
 550                 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */
 551
 552 #ifdef __KAME__
 553                 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) {
 554                         s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]);
 555                         *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0;
 556                 }
 557 #endif
 558                 getnameinfo((struct sockaddr *)&s6,
 559                     s6.sin6_len, host_buf,
 560                     sizeof(host_buf), NULL, 0,
 561                     (nflag ? NI_NUMERICHOST : 0));
 562                 printf("%s (%s) deleted\n", host, host_buf);
 563         }
 564
 565         return 0;
 566 }
 567
 568 #define W_ADDR  36
 569 #define W_LL    17
 570 #define W_IF    6
 571
 572 /*
 573  * Dump the entire neighbor cache
 574  */
 575 void
 576 dump(addr, cflag)
 577         struct in6_addr *addr;
 578         int cflag;
 579 {
 580         int mib[6];
 581         size_t needed;
 582         char *lim, *buf, *next;
 583         struct rt_msghdr *rtm;
 584         struct sockaddr_in6 *sin;
 585         struct sockaddr_dl *sdl;
 586         extern int h_errno;
 587         struct in6_nbrinfo *nbi;
 588         struct timeval time;
 589         int addrwidth;
 590         int llwidth;
 591         int ifwidth;
 592         char flgbuf[8];
 593         char *ifname;
 594
 595         /* Print header */
 596         if (!tflag && !cflag)
 597                 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n",
 598                     W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address",
 599                     W_IF, W_IF, "Netif", "Expire", "S", "Flags");
 600
 601 again:;
 602         mib[0] = CTL_NET;
 603         mib[1] = PF_ROUTE;
 604         mib[2] = 0;
 605         mib[3] = AF_INET6;
 606         mib[4] = NET_RT_FLAGS;
 607         mib[5] = RTF_LLINFO;
 608         if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
 609                 err(1, "sysctl(PF_ROUTE estimate)");
 610         if (needed > 0) {
 611                 if ((buf = malloc(needed)) == NULL)
 612                         err(1, "malloc");
 613                 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
 614                         err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)");
 615                 lim = buf + needed;
 616         } else
 617                 buf = lim = NULL;
 618
 619         for (next = buf; next && next < lim; next += rtm->rtm_msglen) {
 620                 int isrouter = 0, prbs = 0;
 621
 622                 rtm = (struct rt_msghdr *)next;
 623                 sin = (struct sockaddr_in6 *)(rtm + 1);
 624                 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len));
 625
 626                 /*
 627                  * Some OSes can produce a route that has the LINK flag but
 628                  * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD
 629                  * and BSD/OS, where xx is not the interface identifier on
 630                  * lo0).  Such routes entry would annoy getnbrinfo() below,
 631                  * so we skip them.
 632                  * XXX: such routes should have the GATEWAY flag, not the
 633                  * LINK flag.  However, there is rotten routing software
 634                  * that advertises all routes that have the GATEWAY flag.
 635                  * Thus, KAME kernel intentionally does not set the LINK flag.
 636                  * What is to be fixed is not ndp, but such routing software
 637                  * (and the kernel workaround)...
 638                  */
 639                 if (sdl->sdl_family != AF_LINK)
 640                         continue;
 641
 642                 if (!(rtm->rtm_flags & RTF_HOST))
 643                         continue;
 644
 645                 if (addr) {
 646                         if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr))
 647                                 continue;
 648                         found_entry = 1;
 649                 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr))
 650                         continue;
 651                 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) ||
 652                     IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) {
 653                         /* XXX: should scope id be filled in the kernel? */
 654                         if (sin->sin6_scope_id == 0)
 655                                 sin->sin6_scope_id = sdl->sdl_index;
 656 #ifdef __KAME__
 657                         /* KAME specific hack; removed the embedded id */
 658                         *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0;
 659 #endif
 660                 }
 661                 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
 662                     sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0));
 663                 if (cflag) {
 664 #ifdef RTF_WASCLONED
 665                         if (rtm->rtm_flags & RTF_WASCLONED)
 666                                 delete(host_buf);
 667 #elif defined(RTF_CLONED)
 668                         if (rtm->rtm_flags & RTF_CLONED)
 669                                 delete(host_buf);
 670 #else
 671                         delete(host_buf);
 672 #endif
 673                         continue;
 674                 }
 675                 gettimeofday(&time, 0);
 676                 if (tflag)
 677                         ts_print(&time);
 678
 679                 addrwidth = strlen(host_buf);
 680                 if (addrwidth < W_ADDR)
 681                         addrwidth = W_ADDR;
 682                 llwidth = strlen(ether_str(sdl));
 683                 if (W_ADDR + W_LL - addrwidth > llwidth)
 684                         llwidth = W_ADDR + W_LL - addrwidth;
 685                 ifname = if_indextoname(sdl->sdl_index, ifix_buf);
 686                 if (!ifname)
 687                         ifname = "?";
 688                 ifwidth = strlen(ifname);
 689                 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth)
 690                         ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth;
 691
 692                 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf,
 693                     llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname);
 694
 695                 /* Print neighbor discovery specific informations */
 696                 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1);
 697                 if (nbi) {
 698                         if (nbi->expire > time.tv_sec) {
 699                                 printf(" %-9.9s",
 700                                     sec2str(nbi->expire - time.tv_sec));
 701                         } else if (nbi->expire == 0)
 702                                 printf(" %-9.9s", "permanent");
 703                         else
 704                                 printf(" %-9.9s", "expired");
 705
 706                         switch (nbi->state) {
 707                         case ND6_LLINFO_NOSTATE:
 708                                  printf(" N");
 709                                  break;
 710 #ifdef ND6_LLINFO_WAITDELETE
 711                         case ND6_LLINFO_WAITDELETE:
 712                                  printf(" W");
 713                                  break;
 714 #endif
 715                         case ND6_LLINFO_INCOMPLETE:
 716                                  printf(" I");
 717                                  break;
 718                         case ND6_LLINFO_REACHABLE:
 719                                  printf(" R");
 720                                  break;
 721                         case ND6_LLINFO_STALE:
 722                                  printf(" S");
 723                                  break;
 724                         case ND6_LLINFO_DELAY:
 725                                  printf(" D");
 726                                  break;
 727                         case ND6_LLINFO_PROBE:
 728                                  printf(" P");
 729                                  break;
 730                         default:
 731                                  printf(" ?");
 732                                  break;
 733                         }
 734
 735                         isrouter = nbi->isrouter;
 736                         prbs = nbi->asked;
 737                 } else {
 738                         warnx("failed to get neighbor information");
 739                         printf("  ");
 740                 }
 741
 742                 /*
 743                  * other flags. R: router, P: proxy, W: ??
 744                  */
 745                 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
 746                         snprintf(flgbuf, sizeof(flgbuf), "%s%s",
 747                             isrouter ? "R" : "",
 748                             (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
 749                 } else {
 750                         sin = (struct sockaddr_in6 *)
 751                             (sdl->sdl_len + (char *)sdl);
 752 #if 0   /* W and P are mystery even for us */
 753                         snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s",
 754                             isrouter ? "R" : "",
 755                             !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "",
 756                             (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "",
 757                             (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
 758 #else
 759                         snprintf(flgbuf, sizeof(flgbuf), "%s%s",
 760                             isrouter ? "R" : "",
 761                             (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
 762 #endif
 763                 }
 764                 printf(" %s", flgbuf);
 765
 766                 if (prbs)
 767                         printf(" %d", prbs);
 768
 769                 printf("\n");
 770         }
 771         if (buf != NULL)
 772                 free(buf);
 773
 774         if (repeat) {
 775                 printf("\n");
 776                 fflush(stdout);
 777                 sleep(repeat);
 778                 goto again;
 779         }
 780 }
 781
 782 static struct in6_nbrinfo *
 783 getnbrinfo(addr, ifindex, warning)
 784         struct in6_addr *addr;
 785         int ifindex;
 786         int warning;
 787 {
 788         static struct in6_nbrinfo nbi;
 789         int s;
 790
 791         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
 792                 err(1, "socket");
 793
 794         bzero(&nbi, sizeof(nbi));
 795         if_indextoname(ifindex, nbi.ifname);
 796         nbi.addr = *addr;
 797         if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) {
 798                 if (warning)
 799                         warn("ioctl(SIOCGNBRINFO_IN6)");
 800                 close(s);
 801                 return(NULL);
 802         }
 803
 804         close(s);
 805         return(&nbi);
 806 }
 807
 808 static char *
 809 ether_str(sdl)
 810         struct sockaddr_dl *sdl;
 811 {
 812         static char hbuf[NI_MAXHOST];
 813         u_char *cp;
 814
 815         if (sdl->sdl_alen) {
 816                 cp = (u_char *)LLADDR(sdl);
 817                 snprintf(hbuf, sizeof(hbuf), "%x:%x:%x:%x:%x:%x",
 818                     cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]);
 819         } else
 820                 snprintf(hbuf, sizeof(hbuf), "(incomplete)");
 821
 822         return(hbuf);
 823 }
 824
 825 int
 826 ndp_ether_aton(a, n)
 827         char *a;
 828         u_char *n;
 829 {
 830         int i, o[6];
 831
 832         i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2],
 833             &o[3], &o[4], &o[5]);
 834         if (i != 6) {
 835                 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a);
 836                 return (1);
 837         }
 838         for (i = 0; i < 6; i++)
 839                 n[i] = o[i];
 840         return (0);
 841 }
 842
 843 void
 844 usage()
 845 {
 846         printf("usage: ndp [-nt] hostname\n");
 847         printf("       ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n");
 848         printf("       ndp [-nt] -A wait\n");
 849         printf("       ndp [-nt] -d hostname\n");
 850         printf("       ndp [-nt] -f filename\n");
 851         printf("       ndp [-nt] -i interface [flags...]\n");
 852 #ifdef SIOCSDEFIFACE_IN6
 853         printf("       ndp [-nt] -I [interface|delete]\n");
 854 #endif
 855         printf("       ndp [-nt] -s nodename etheraddr [temp] [proxy]\n");
 856         exit(1);
 857 }
 858
 859 int
 860 rtmsg(cmd)
 861         int cmd;
 862 {
 863         static int seq;
 864         int rlen;
 865         register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
 866         register char *cp = m_rtmsg.m_space;
 867         register int l;
 868
 869         errno = 0;
 870         if (cmd == RTM_DELETE)
 871                 goto doit;
 872         bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
 873         rtm->rtm_flags = flags;
 874         rtm->rtm_version = RTM_VERSION;
 875
 876         switch (cmd) {
 877         default:
 878                 fprintf(stderr, "ndp: internal wrong cmd\n");
 879                 exit(1);
 880         case RTM_ADD:
 881                 rtm->rtm_addrs |= RTA_GATEWAY;
 882                 if (expire_time) {
 883                         rtm->rtm_rmx.rmx_expire = expire_time;
 884                         rtm->rtm_inits = RTV_EXPIRE;
 885                 }
 886                 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC);
 887 #if 0 /* we don't support ipv6addr/128 type proxying */
 888                 if (rtm->rtm_flags & RTF_ANNOUNCE) {
 889                         rtm->rtm_flags &= ~RTF_HOST;
 890                         rtm->rtm_addrs |= RTA_NETMASK;
 891                 }
 892 #endif
 893                 /* FALLTHROUGH */
 894         case RTM_GET:
 895                 rtm->rtm_addrs |= RTA_DST;
 896         }
 897 #define NEXTADDR(w, s) \
 898         if (rtm->rtm_addrs & (w)) { \
 899                 bcopy((char *)&s, cp, sizeof(s)); cp += SA_SIZE(&s);}
 900
 901         NEXTADDR(RTA_DST, sin_m);
 902         NEXTADDR(RTA_GATEWAY, sdl_m);
 903 #if 0 /* we don't support ipv6addr/128 type proxying */
 904         memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr));
 905         NEXTADDR(RTA_NETMASK, so_mask);
 906 #endif
 907
 908         rtm->rtm_msglen = cp - (char *)&m_rtmsg;
 909 doit:
 910         l = rtm->rtm_msglen;
 911         rtm->rtm_seq = ++seq;
 912         rtm->rtm_type = cmd;
 913         if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
 914                 if (errno != ESRCH || cmd != RTM_DELETE) {
 915                         err(1, "writing to routing socket");
 916                         /* NOTREACHED */
 917                 }
 918         }
 919         do {
 920                 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
 921         } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
 922         if (l < 0)
 923                 (void) fprintf(stderr, "ndp: read from routing socket: %s\n",
 924                     strerror(errno));
 925         return (0);
 926 }
 927
 928 void
 929 ifinfo(ifname, argc, argv)
 930         char *ifname;
 931         int argc;
 932         char **argv;
 933 {
 934         struct in6_ndireq nd;
 935         int i, s;
 936         u_int32_t newflags;
 937 #ifdef IPV6CTL_USETEMPADDR
 938         u_int8_t nullbuf[8];
 939 #endif
 940
 941         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
 942                 err(1, "socket");
 943                 /* NOTREACHED */
 944         }
 945         bzero(&nd, sizeof(nd));
 946         strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
 947         if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
 948                 err(1, "ioctl(SIOCGIFINFO_IN6)");
 949                 /* NOTREACHED */
 950         }
 951 #define ND nd.ndi
 952         newflags = ND.flags;
 953         for (i = 0; i < argc; i++) {
 954                 int clear = 0;
 955                 char *cp = argv[i];
 956
 957                 if (*cp == '-') {
 958                         clear = 1;
 959                         cp++;
 960                 }
 961
 962 #define SETFLAG(s, f) \
 963         do {\
 964                 if (strcmp(cp, (s)) == 0) {\
 965                         if (clear)\
 966                                 newflags &= ~(f);\
 967                         else\
 968                                 newflags |= (f);\
 969                 }\
 970         } while (0)
 971 /*
 972  * XXX: this macro is not 100% correct, in that it matches "nud" against
 973  *      "nudbogus".  But we just let it go since this is minor.
 974  */
 975 #define SETVALUE(f, v) \
 976         do { \
 977                 char *valptr; \
 978                 unsigned long newval; \
 979                 v = 0; /* unspecified */ \
 980                 if (strncmp(cp, f, strlen(f)) == 0) { \
 981                         valptr = strchr(cp, '='); \
 982                         if (valptr == NULL) \
 983                                 err(1, "syntax error in %s field", (f)); \
 984                         errno = 0; \
 985                         newval = strtoul(++valptr, NULL, 0); \
 986                         if (errno) \
 987                                 err(1, "syntax error in %s's value", (f)); \
 988                         v = newval; \
 989                 } \
 990         } while (0)
 991
 992                 SETFLAG("disabled", ND6_IFF_IFDISABLED);
 993                 SETFLAG("nud", ND6_IFF_PERFORMNUD);
 994 #ifdef ND6_IFF_ACCEPT_RTADV
 995                 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV);
 996 #endif
 997 #ifdef ND6_IFF_PREFER_SOURCE
 998                 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE);
 999 #endif
1000                 SETVALUE("basereachable", ND.basereachable);
1001                 SETVALUE("retrans", ND.retrans);
1002                 SETVALUE("curhlim", ND.chlim);
1003
1004                 ND.flags = newflags;
1005                 if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) {
1006                         err(1, "ioctl(SIOCSIFINFO_IN6)");
1007                         /* NOTREACHED */
1008                 }
1009 #undef SETFLAG
1010 #undef SETVALUE
1011         }
1012
1013         if (!ND.initialized) {
1014                 errx(1, "%s: not initialized yet", ifname);
1015                 /* NOTREACHED */
1016         }
1017
1018         if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
1019                 err(1, "ioctl(SIOCGIFINFO_IN6)");
1020                 /* NOTREACHED */
1021         }
1022         printf("linkmtu=%d", ND.linkmtu);
1023         printf(", maxmtu=%d", ND.maxmtu);
1024         printf(", curhlim=%d", ND.chlim);
1025         printf(", basereachable=%ds%dms",
1026             ND.basereachable / 1000, ND.basereachable % 1000);
1027         printf(", reachable=%ds", ND.reachable);
1028         printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
1029 #ifdef IPV6CTL_USETEMPADDR
1030         memset(nullbuf, 0, sizeof(nullbuf));
1031         if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) {
1032                 int j;
1033                 u_int8_t *rbuf;
1034
1035                 for (i = 0; i < 3; i++) {
1036                         switch (i) {
1037                         case 0:
1038                                 printf("\nRandom seed(0): ");
1039                                 rbuf = ND.randomseed0;
1040                                 break;
1041                         case 1:
1042                                 printf("\nRandom seed(1): ");
1043                                 rbuf = ND.randomseed1;
1044                                 break;
1045                         case 2:
1046                                 printf("\nRandom ID:      ");
1047                                 rbuf = ND.randomid;
1048                                 break;
1049                         default:
1050                                 errx(1, "impossible case for tempaddr display");
1051                         }
1052                         for (j = 0; j < 8; j++)
1053                                 printf("%02x", rbuf[j]);
1054                 }
1055         }
1056 #endif
1057         if (ND.flags) {
1058                 printf("\nFlags: ");
1059 #ifdef ND6_IFF_IFDISABLED
1060                 if ((ND.flags & ND6_IFF_IFDISABLED))
1061                         printf("disabled ");
1062 #endif
1063                 if ((ND.flags & ND6_IFF_PERFORMNUD))
1064                         printf("nud ");
1065 #ifdef ND6_IFF_ACCEPT_RTADV
1066                 if ((ND.flags & ND6_IFF_ACCEPT_RTADV))
1067                         printf("accept_rtadv ");
1068 #endif
1069 #ifdef ND6_IFF_PREFER_SOURCE
1070                 if ((ND.flags & ND6_IFF_PREFER_SOURCE))
1071                         printf("prefer_source ");
1072 #endif
1073         }
1074         putc('\n', stdout);
1075 #undef ND
1076
1077         close(s);
1078 }
1079
1080 #ifndef ND_RA_FLAG_RTPREF_MASK  /* XXX: just for compilation on *BSD release */
1081 #define ND_RA_FLAG_RTPREF_MASK  0x18 /* 00011000 */
1082 #endif
1083
1084 void
1085 rtrlist()
1086 {
1087 #ifdef ICMPV6CTL_ND6_DRLIST
1088         int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST };
1089         char *buf;
1090         struct in6_defrouter *p, *ep;
1091         size_t l;
1092         struct timeval time;
1093
1094         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1095                 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1096                 /*NOTREACHED*/
1097         }
1098         if (l == 0)
1099                 return;
1100         buf = malloc(l);
1101         if (!buf) {
1102                 err(1, "malloc");
1103                 /*NOTREACHED*/
1104         }
1105         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1106                 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1107                 /*NOTREACHED*/
1108         }
1109
1110         ep = (struct in6_defrouter *)(buf + l);
1111         for (p = (struct in6_defrouter *)buf; p < ep; p++) {
1112                 int rtpref;
1113
1114                 if (getnameinfo((struct sockaddr *)&p->rtaddr,
1115                     p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0,
1116                     (nflag ? NI_NUMERICHOST : 0)) != 0)
1117                         strlcpy(host_buf, "?", sizeof(host_buf));
1118
1119                 printf("%s if=%s", host_buf,
1120                     if_indextoname(p->if_index, ifix_buf));
1121                 printf(", flags=%s%s",
1122                     p->flags & ND_RA_FLAG_MANAGED ? "M" : "",
1123                     p->flags & ND_RA_FLAG_OTHER   ? "O" : "");
1124                 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff;
1125                 printf(", pref=%s", rtpref_str[rtpref]);
1126
1127                 gettimeofday(&time, 0);
1128                 if (p->expire == 0)
1129                         printf(", expire=Never\n");
1130                 else
1131                         printf(", expire=%s\n",
1132                             sec2str(p->expire - time.tv_sec));
1133         }
1134         free(buf);
1135 #else
1136         struct in6_drlist dr;
1137         int s, i;
1138         struct timeval time;
1139
1140         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1141                 err(1, "socket");
1142                 /* NOTREACHED */
1143         }
1144         bzero(&dr, sizeof(dr));
1145         strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */
1146         if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
1147                 err(1, "ioctl(SIOCGDRLST_IN6)");
1148                 /* NOTREACHED */
1149         }
1150 #define DR dr.defrouter[i]
1151         for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) {
1152                 struct sockaddr_in6 sin6;
1153
1154                 bzero(&sin6, sizeof(sin6));
1155                 sin6.sin6_family = AF_INET6;
1156                 sin6.sin6_len = sizeof(sin6);
1157                 sin6.sin6_addr = DR.rtaddr;
1158                 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf,
1159                     sizeof(host_buf), NULL, 0,
1160                     (nflag ? NI_NUMERICHOST : 0));
1161
1162                 printf("%s if=%s", host_buf,
1163                     if_indextoname(DR.if_index, ifix_buf));
1164                 printf(", flags=%s%s",
1165                     DR.flags & ND_RA_FLAG_MANAGED ? "M" : "",
1166                     DR.flags & ND_RA_FLAG_OTHER   ? "O" : "");
1167                 gettimeofday(&time, 0);
1168                 if (DR.expire == 0)
1169                         printf(", expire=Never\n");
1170                 else
1171                         printf(", expire=%s\n",
1172                             sec2str(DR.expire - time.tv_sec));
1173         }
1174 #undef DR
1175         close(s);
1176 #endif
1177 }
1178
1179 void
1180 plist()
1181 {
1182 #ifdef ICMPV6CTL_ND6_PRLIST
1183         int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST };
1184         char *buf;
1185         struct in6_prefix *p, *ep, *n;
1186         struct sockaddr_in6 *advrtr;
1187         size_t l;
1188         struct timeval time;
1189         const int niflags = NI_NUMERICHOST;
1190         int ninflags = nflag ? NI_NUMERICHOST : 0;
1191         char namebuf[NI_MAXHOST];
1192
1193         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1194                 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1195                 /*NOTREACHED*/
1196         }
1197         buf = malloc(l);
1198         if (!buf) {
1199                 err(1, "malloc");
1200                 /*NOTREACHED*/
1201         }
1202         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1203                 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1204                 /*NOTREACHED*/
1205         }
1206
1207         ep = (struct in6_prefix *)(buf + l);
1208         for (p = (struct in6_prefix *)buf; p < ep; p = n) {
1209                 advrtr = (struct sockaddr_in6 *)(p + 1);
1210                 n = (struct in6_prefix *)&advrtr[p->advrtrs];
1211
1212                 if (getnameinfo((struct sockaddr *)&p->prefix,
1213                     p->prefix.sin6_len, namebuf, sizeof(namebuf),
1214                     NULL, 0, niflags) != 0)
1215                         strlcpy(namebuf, "?", sizeof(namebuf));
1216                 printf("%s/%d if=%s\n", namebuf, p->prefixlen,
1217                     if_indextoname(p->if_index, ifix_buf));
1218
1219                 gettimeofday(&time, 0);
1220                 /*
1221                  * meaning of fields, especially flags, is very different
1222                  * by origin.  notify the difference to the users.
1223                  */
1224                 printf("flags=%s%s%s%s%s",
1225                     p->raflags.onlink ? "L" : "",
1226                     p->raflags.autonomous ? "A" : "",
1227                     (p->flags & NDPRF_ONLINK) != 0 ? "O" : "",
1228                     (p->flags & NDPRF_DETACHED) != 0 ? "D" : "",
1229 #ifdef NDPRF_HOME
1230                     (p->flags & NDPRF_HOME) != 0 ? "H" : ""
1231 #else
1232                     ""
1233 #endif
1234                     );
1235                 if (p->vltime == ND6_INFINITE_LIFETIME)
1236                         printf(" vltime=infinity");
1237                 else
1238                         printf(" vltime=%lu", (unsigned long)p->vltime);
1239                 if (p->pltime == ND6_INFINITE_LIFETIME)
1240                         printf(", pltime=infinity");
1241                 else
1242                         printf(", pltime=%lu", (unsigned long)p->pltime);
1243                 if (p->expire == 0)
1244                         printf(", expire=Never");
1245                 else if (p->expire >= time.tv_sec)
1246                         printf(", expire=%s",
1247                             sec2str(p->expire - time.tv_sec));
1248                 else
1249                         printf(", expired");
1250                 printf(", ref=%d", p->refcnt);
1251                 printf("\n");
1252                 /*
1253                  * "advertising router" list is meaningful only if the prefix
1254                  * information is from RA.
1255                  */
1256                 if (p->advrtrs) {
1257                         int j;
1258                         struct sockaddr_in6 *sin6;
1259
1260                         sin6 = advrtr;
1261                         printf("  advertised by\n");
1262                         for (j = 0; j < p->advrtrs; j++) {
1263                                 struct in6_nbrinfo *nbi;
1264
1265                                 if (getnameinfo((struct sockaddr *)sin6,
1266                                     sin6->sin6_len, namebuf, sizeof(namebuf),
1267                                     NULL, 0, ninflags) != 0)
1268                                         strlcpy(namebuf, "?", sizeof(namebuf));
1269                                 printf("    %s", namebuf);
1270
1271                                 nbi = getnbrinfo(&sin6->sin6_addr,
1272                                     p->if_index, 0);
1273                                 if (nbi) {
1274                                         switch (nbi->state) {
1275                                         case ND6_LLINFO_REACHABLE:
1276                                         case ND6_LLINFO_STALE:
1277                                         case ND6_LLINFO_DELAY:
1278                                         case ND6_LLINFO_PROBE:
1279                                                 printf(" (reachable)\n");
1280                                                 break;
1281                                         default:
1282                                                 printf(" (unreachable)\n");
1283                                         }
1284                                 } else
1285                                         printf(" (no neighbor state)\n");
1286                                 sin6++;
1287                         }
1288                 } else
1289                         printf("  No advertising router\n");
1290         }
1291         free(buf);
1292 #else
1293         struct in6_prlist pr;
1294         int s, i;
1295         struct timeval time;
1296
1297         gettimeofday(&time, 0);
1298
1299         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1300                 err(1, "socket");
1301                 /* NOTREACHED */
1302         }
1303         bzero(&pr, sizeof(pr));
1304         strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */
1305         if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
1306                 err(1, "ioctl(SIOCGPRLST_IN6)");
1307                 /* NOTREACHED */
1308         }
1309 #define PR pr.prefix[i]
1310         for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
1311                 struct sockaddr_in6 p6;
1312                 char namebuf[NI_MAXHOST];
1313                 int niflags;
1314
1315 #ifdef NDPRF_ONLINK
1316                 p6 = PR.prefix;
1317 #else
1318                 memset(&p6, 0, sizeof(p6));
1319                 p6.sin6_family = AF_INET6;
1320                 p6.sin6_len = sizeof(p6);
1321                 p6.sin6_addr = PR.prefix;
1322 #endif
1323
1324                 /*
1325                  * copy link index to sin6_scope_id field.
1326                  * XXX: KAME specific.
1327                  */
1328                 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) {
1329                         u_int16_t linkid;
1330
1331                         memcpy(&linkid, &p6.sin6_addr.s6_addr[2],
1332                             sizeof(linkid));
1333                         linkid = ntohs(linkid);
1334                         p6.sin6_scope_id = linkid;
1335                         p6.sin6_addr.s6_addr[2] = 0;
1336                         p6.sin6_addr.s6_addr[3] = 0;
1337                 }
1338
1339                 niflags = NI_NUMERICHOST;
1340                 if (getnameinfo((struct sockaddr *)&p6,
1341                     sizeof(p6), namebuf, sizeof(namebuf),
1342                     NULL, 0, niflags)) {
1343                         warnx("getnameinfo failed");
1344                         continue;
1345                 }
1346                 printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
1347                     if_indextoname(PR.if_index, ifix_buf));
1348
1349                 gettimeofday(&time, 0);
1350                 /*
1351                  * meaning of fields, especially flags, is very different
1352                  * by origin.  notify the difference to the users.
1353                  */
1354 #if 0
1355                 printf("  %s",
1356                     PR.origin == PR_ORIG_RA ? "" : "advertise: ");
1357 #endif
1358 #ifdef NDPRF_ONLINK
1359                 printf("flags=%s%s%s%s%s",
1360                     PR.raflags.onlink ? "L" : "",
1361                     PR.raflags.autonomous ? "A" : "",
1362                     (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "",
1363                     (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "",
1364 #ifdef NDPRF_HOME
1365                     (PR.flags & NDPRF_HOME) != 0 ? "H" : ""
1366 #else
1367                     ""
1368 #endif
1369                     );
1370 #else
1371                 printf("flags=%s%s",
1372                     PR.raflags.onlink ? "L" : "",
1373                     PR.raflags.autonomous ? "A" : "");
1374 #endif
1375                 if (PR.vltime == ND6_INFINITE_LIFETIME)
1376                         printf(" vltime=infinity");
1377                 else
1378                         printf(" vltime=%lu", PR.vltime);
1379                 if (PR.pltime == ND6_INFINITE_LIFETIME)
1380                         printf(", pltime=infinity");
1381                 else
1382                         printf(", pltime=%lu", PR.pltime);
1383                 if (PR.expire == 0)
1384                         printf(", expire=Never");
1385                 else if (PR.expire >= time.tv_sec)
1386                         printf(", expire=%s",
1387                             sec2str(PR.expire - time.tv_sec));
1388                 else
1389                         printf(", expired");
1390 #ifdef NDPRF_ONLINK
1391                 printf(", ref=%d", PR.refcnt);
1392 #endif
1393 #if 0
1394                 switch (PR.origin) {
1395                 case PR_ORIG_RA:
1396                         printf(", origin=RA");
1397                         break;
1398                 case PR_ORIG_RR:
1399                         printf(", origin=RR");
1400                         break;
1401                 case PR_ORIG_STATIC:
1402                         printf(", origin=static");
1403                         break;
1404                 case PR_ORIG_KERNEL:
1405                         printf(", origin=kernel");
1406                         break;
1407                 default:
1408                         printf(", origin=?");
1409                         break;
1410                 }
1411 #endif
1412                 printf("\n");
1413                 /*
1414                  * "advertising router" list is meaningful only if the prefix
1415                  * information is from RA.
1416                  */
1417                 if (0 &&        /* prefix origin is almost obsolted */
1418                     PR.origin != PR_ORIG_RA)
1419                         ;
1420                 else if (PR.advrtrs) {
1421                         int j;
1422                         printf("  advertised by\n");
1423                         for (j = 0; j < PR.advrtrs; j++) {
1424                                 struct sockaddr_in6 sin6;
1425                                 struct in6_nbrinfo *nbi;
1426
1427                                 bzero(&sin6, sizeof(sin6));
1428                                 sin6.sin6_family = AF_INET6;
1429                                 sin6.sin6_len = sizeof(sin6);
1430                                 sin6.sin6_addr = PR.advrtr[j];
1431                                 sin6.sin6_scope_id = PR.if_index; /* XXX */
1432                                 getnameinfo((struct sockaddr *)&sin6,
1433                                     sin6.sin6_len, host_buf,
1434                                     sizeof(host_buf), NULL, 0,
1435                                     (nflag ? NI_NUMERICHOST : 0));
1436                                 printf("    %s", host_buf);
1437
1438                                 nbi = getnbrinfo(&sin6.sin6_addr,
1439                                     PR.if_index, 0);
1440                                 if (nbi) {
1441                                         switch (nbi->state) {
1442                                         case ND6_LLINFO_REACHABLE:
1443                                         case ND6_LLINFO_STALE:
1444                                         case ND6_LLINFO_DELAY:
1445                                         case ND6_LLINFO_PROBE:
1446                                                  printf(" (reachable)\n");
1447                                                  break;
1448                                         default:
1449                                                  printf(" (unreachable)\n");
1450                                         }
1451                                 } else
1452                                         printf(" (no neighbor state)\n");
1453                         }
1454                         if (PR.advrtrs > DRLSTSIZ)
1455                                 printf("    and %d routers\n",
1456                                     PR.advrtrs - DRLSTSIZ);
1457                 } else
1458                         printf("  No advertising router\n");
1459         }
1460 #undef PR
1461         close(s);
1462 #endif
1463 }
1464
1465 void
1466 pfx_flush()
1467 {
1468         char dummyif[IFNAMSIZ+8];
1469         int s;
1470
1471         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1472                 err(1, "socket");
1473         strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1474         if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
1475                 err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
1476 }
1477
1478 void
1479 rtr_flush()
1480 {
1481         char dummyif[IFNAMSIZ+8];
1482         int s;
1483
1484         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1485                 err(1, "socket");
1486         strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1487         if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
1488                 err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
1489
1490         close(s);
1491 }
1492
1493 void
1494 harmonize_rtr()
1495 {
1496         char dummyif[IFNAMSIZ+8];
1497         int s;
1498
1499         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1500                 err(1, "socket");
1501         strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1502         if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
1503                 err(1, "ioctl(SIOCSNDFLUSH_IN6)");
1504
1505         close(s);
1506 }
1507
1508 #ifdef SIOCSDEFIFACE_IN6        /* XXX: check SIOCGDEFIFACE_IN6 as well? */
1509 static void
1510 setdefif(ifname)
1511         char *ifname;
1512 {
1513         struct in6_ndifreq ndifreq;
1514         unsigned int ifindex;
1515
1516         if (strcasecmp(ifname, "delete") == 0)
1517                 ifindex = 0;
1518         else {
1519                 if ((ifindex = if_nametoindex(ifname)) == 0)
1520                         err(1, "failed to resolve i/f index for %s", ifname);
1521         }
1522
1523         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1524                 err(1, "socket");
1525
1526         strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1527         ndifreq.ifindex = ifindex;
1528
1529         if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1530                 err(1, "ioctl(SIOCSDEFIFACE_IN6)");
1531
1532         close(s);
1533 }
1534
1535 static void
1536 getdefif()
1537 {
1538         struct in6_ndifreq ndifreq;
1539         char ifname[IFNAMSIZ+8];
1540
1541         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1542                 err(1, "socket");
1543
1544         memset(&ndifreq, 0, sizeof(ndifreq));
1545         strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1546
1547         if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1548                 err(1, "ioctl(SIOCGDEFIFACE_IN6)");
1549
1550         if (ndifreq.ifindex == 0)
1551                 printf("No default interface.\n");
1552         else {
1553                 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL)
1554                         err(1, "failed to resolve ifname for index %lu",
1555                             ndifreq.ifindex);
1556                 printf("ND default interface = %s\n", ifname);
1557         }
1558
1559         close(s);
1560 }
1561 #endif
1562
1563 static char *
1564 sec2str(total)
1565         time_t total;
1566 {
1567         static char result[256];
1568         int days, hours, mins, secs;
1569         int first = 1;
1570         char *p = result;
1571         char *ep = &result[sizeof(result)];
1572         int n;
1573
1574         days = total / 3600 / 24;
1575         hours = (total / 3600) % 24;
1576         mins = (total / 60) % 60;
1577         secs = total % 60;
1578
1579         if (days) {
1580                 first = 0;
1581                 n = snprintf(p, ep - p, "%dd", days);
1582                 if (n < 0 || n >= ep - p)
1583                         return "?";
1584                 p += n;
1585         }
1586         if (!first || hours) {
1587                 first = 0;
1588                 n = snprintf(p, ep - p, "%dh", hours);
1589                 if (n < 0 || n >= ep - p)
1590                         return "?";
1591                 p += n;
1592         }
1593         if (!first || mins) {
1594                 first = 0;
1595                 n = snprintf(p, ep - p, "%dm", mins);
1596                 if (n < 0 || n >= ep - p)
1597                         return "?";
1598                 p += n;
1599         }
1600         snprintf(p, ep - p, "%ds", secs);
1601
1602         return(result);
1603 }
1604
1605 /*
1606  * Print the timestamp
1607  * from tcpdump/util.c
1608  */
1609 static void
1610 ts_print(tvp)
1611         const struct timeval *tvp;
1612 {
1613         int s;
1614
1615         /* Default */
1616         s = (tvp->tv_sec + thiszone) % 86400;
1617         (void)printf("%02d:%02d:%02d.%06u ",
1618             s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec);
1619 }