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 "gmt2local.h"
 111
 112 /* packing rule for routing socket */
 113 #define ROUNDUP(a) \
 114         ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
 115 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
 116
 117 #define NEXTADDR(w, s) \
 118         if (rtm->rtm_addrs & (w)) { \
 119                 bcopy((char *)&s, cp, sizeof(s)); cp += SA_SIZE(&s);}
 120
 121
 122 static pid_t pid;
 123 static int nflag;
 124 static int tflag;
 125 static int32_t thiszone;        /* time difference with gmt */
 126 static int s = -1;
 127 static int repeat = 0;
 128
 129 char ntop_buf[INET6_ADDRSTRLEN];        /* inet_ntop() */
 130 char host_buf[NI_MAXHOST];              /* getnameinfo() */
 131 char ifix_buf[IFNAMSIZ];                /* if_indextoname() */
 132
 133 int main(int, char **);
 134 int file(char *);
 135 void getsocket(void);
 136 int set(int, char **);
 137 void get(char *);
 138 int delete(char *);
 139 void dump(struct in6_addr *, int);
 140 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *, int, int);
 141 static char *ether_str(struct sockaddr_dl *);
 142 int ndp_ether_aton(char *, u_char *);
 143 void usage(void);
 144 int rtmsg(int);
 145 void ifinfo(char *, int, char **);
 146 void rtrlist(void);
 147 void plist(void);
 148 void pfx_flush(void);
 149 void rtr_flush(void);
 150 void harmonize_rtr(void);
 151 #ifdef SIOCSDEFIFACE_IN6        /* XXX: check SIOCGDEFIFACE_IN6 as well? */
 152 static void getdefif(void);
 153 static void setdefif(char *);
 154 #endif
 155 static char *sec2str(time_t);
 156 static void ts_print(const struct timeval *);
 157
 158 #ifdef ICMPV6CTL_ND6_DRLIST
 159 static char *rtpref_str[] = {
 160         "medium",               /* 00 */
 161         "high",                 /* 01 */
 162         "rsv",                  /* 10 */
 163         "low"                   /* 11 */
 164 };
 165 #endif
 166
 167 int mode = 0;
 168 char *arg = NULL;
 169
 170 int
 171 main(argc, argv)
 172         int argc;
 173         char **argv;
 174 {
 175         int ch;
 176
 177         pid = getpid();
 178         thiszone = gmt2local(0);
 179         while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1)
 180                 switch (ch) {
 181                 case 'a':
 182                 case 'c':
 183                 case 'p':
 184                 case 'r':
 185                 case 'H':
 186                 case 'P':
 187                 case 'R':
 188                 case 's':
 189                 case 'I':
 190                         if (mode) {
 191                                 usage();
 192                                 /*NOTREACHED*/
 193                         }
 194                         mode = ch;
 195                         arg = NULL;
 196                         break;
 197                 case 'd':
 198                 case 'f':
 199                 case 'i' :
 200                         if (mode) {
 201                                 usage();
 202                                 /*NOTREACHED*/
 203                         }
 204                         mode = ch;
 205                         arg = optarg;
 206                         break;
 207                 case 'n':
 208                         nflag = 1;
 209                         break;
 210                 case 't':
 211                         tflag = 1;
 212                         break;
 213                 case 'A':
 214                         if (mode) {
 215                                 usage();
 216                                 /*NOTREACHED*/
 217                         }
 218                         mode = 'a';
 219                         repeat = atoi(optarg);
 220                         if (repeat < 0) {
 221                                 usage();
 222                                 /*NOTREACHED*/
 223                         }
 224                         break;
 225                 default:
 226                         usage();
 227                 }
 228
 229         argc -= optind;
 230         argv += optind;
 231
 232         switch (mode) {
 233         case 'a':
 234         case 'c':
 235                 if (argc != 0) {
 236                         usage();
 237                         /*NOTREACHED*/
 238                 }
 239                 dump(0, mode == 'c');
 240                 break;
 241         case 'd':
 242                 if (argc != 0) {
 243                         usage();
 244                         /*NOTREACHED*/
 245                 }
 246                 delete(arg);
 247                 break;
 248         case 'I':
 249 #ifdef SIOCSDEFIFACE_IN6        /* XXX: check SIOCGDEFIFACE_IN6 as well? */
 250                 if (argc > 1) {
 251                         usage();
 252                         /*NOTREACHED*/
 253                 } else if (argc == 1) {
 254                         if (strcmp(*argv, "delete") == 0 ||
 255                             if_nametoindex(*argv))
 256                                 setdefif(*argv);
 257                         else
 258                                 errx(1, "invalid interface %s", *argv);
 259                 }
 260                 getdefif(); /* always call it to print the result */
 261                 break;
 262 #else
 263                 errx(1, "not supported yet");
 264                 /*NOTREACHED*/
 265 #endif
 266         case 'p':
 267                 if (argc != 0) {
 268                         usage();
 269                         /*NOTREACHED*/
 270                 }
 271                 plist();
 272                 break;
 273         case 'i':
 274                 ifinfo(arg, argc, argv);
 275                 break;
 276         case 'r':
 277                 if (argc != 0) {
 278                         usage();
 279                         /*NOTREACHED*/
 280                 }
 281                 rtrlist();
 282                 break;
 283         case 's':
 284                 if (argc < 2 || argc > 4)
 285                         usage();
 286                 exit(set(argc, argv) ? 1 : 0);
 287         case 'H':
 288                 if (argc != 0) {
 289                         usage();
 290                         /*NOTREACHED*/
 291                 }
 292                 harmonize_rtr();
 293                 break;
 294         case 'P':
 295                 if (argc != 0) {
 296                         usage();
 297                         /*NOTREACHED*/
 298                 }
 299                 pfx_flush();
 300                 break;
 301         case 'R':
 302                 if (argc != 0) {
 303                         usage();
 304                         /*NOTREACHED*/
 305                 }
 306                 rtr_flush();
 307                 break;
 308         case 0:
 309                 if (argc != 1) {
 310                         usage();
 311                         /*NOTREACHED*/
 312                 }
 313                 get(argv[0]);
 314                 break;
 315         }
 316         exit(0);
 317 }
 318
 319 /*
 320  * Process a file to set standard ndp entries
 321  */
 322 int
 323 file(name)
 324         char *name;
 325 {
 326         FILE *fp;
 327         int i, retval;
 328         char line[100], arg[5][50], *args[5];
 329
 330         if ((fp = fopen(name, "r")) == NULL) {
 331                 fprintf(stderr, "ndp: cannot open %s\n", name);
 332                 exit(1);
 333         }
 334         args[0] = &arg[0][0];
 335         args[1] = &arg[1][0];
 336         args[2] = &arg[2][0];
 337         args[3] = &arg[3][0];
 338         args[4] = &arg[4][0];
 339         retval = 0;
 340         while (fgets(line, sizeof(line), fp) != NULL) {
 341                 i = sscanf(line, "%49s %49s %49s %49s %49s",
 342                     arg[0], arg[1], arg[2], arg[3], arg[4]);
 343                 if (i < 2) {
 344                         fprintf(stderr, "ndp: bad line: %s\n", line);
 345                         retval = 1;
 346                         continue;
 347                 }
 348                 if (set(i, args))
 349                         retval = 1;
 350         }
 351         fclose(fp);
 352         return (retval);
 353 }
 354
 355 void
 356 getsocket()
 357 {
 358         if (s < 0) {
 359                 s = socket(PF_ROUTE, SOCK_RAW, 0);
 360                 if (s < 0) {
 361                         err(1, "socket");
 362                         /* NOTREACHED */
 363                 }
 364         }
 365 }
 366
 367 struct  sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 };
 368 struct  sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m;
 369 struct  sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m;
 370 int     expire_time, flags, found_entry;
 371 struct  {
 372         struct  rt_msghdr m_rtm;
 373         char    m_space[512];
 374 }       m_rtmsg;
 375
 376 /*
 377  * Set an individual neighbor cache entry
 378  */
 379 int
 380 set(argc, argv)
 381         int argc;
 382         char **argv;
 383 {
 384         register struct sockaddr_in6 *sin = &sin_m;
 385         register struct sockaddr_dl *sdl;
 386         register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
 387         struct addrinfo hints, *res;
 388         int gai_error;
 389         u_char *ea;
 390         char *host = argv[0], *eaddr = argv[1];
 391
 392         getsocket();
 393         argc -= 2;
 394         argv += 2;
 395         sdl_m = blank_sdl;
 396         sin_m = blank_sin;
 397
 398         bzero(&hints, sizeof(hints));
 399         hints.ai_family = AF_INET6;
 400         gai_error = getaddrinfo(host, NULL, &hints, &res);
 401         if (gai_error) {
 402                 fprintf(stderr, "ndp: %s: %s\n", host,
 403                         gai_strerror(gai_error));
 404                 return 1;
 405         }
 406         sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
 407         sin->sin6_scope_id =
 408             ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
 409         ea = (u_char *)LLADDR(&sdl_m);
 410         if (ndp_ether_aton(eaddr, ea) == 0)
 411                 sdl_m.sdl_alen = 6;
 412         flags = expire_time = 0;
 413         while (argc-- > 0) {
 414                 if (strncmp(argv[0], "temp", 4) == 0) {
 415                         struct timeval time;
 416
 417                         gettimeofday(&time, 0);
 418                         expire_time = time.tv_sec + 20 * 60;
 419                 } else if (strncmp(argv[0], "proxy", 5) == 0)
 420                         flags |= RTF_ANNOUNCE;
 421                 argv++;
 422         }
 423         if (rtmsg(RTM_GET) < 0) {
 424                 errx(1, "RTM_GET(%s) failed", host);
 425                 /* NOTREACHED */
 426         }
 427         sin = (struct sockaddr_in6 *)(rtm + 1);
 428         sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
 429         if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
 430                 if (sdl->sdl_family == AF_LINK &&
 431                     !(rtm->rtm_flags & RTF_GATEWAY)) {
 432                         switch (sdl->sdl_type) {
 433                         case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
 434                         case IFT_ISO88024: case IFT_ISO88025:
 435                         case IFT_L2VLAN: case IFT_BRIDGE:
 436                                 goto overwrite;
 437                         }
 438                 }
 439                 fprintf(stderr, "set: cannot configure a new entry\n");
 440                 return 1;
 441         }
 442
 443 overwrite:
 444         if (sdl->sdl_family != AF_LINK) {
 445                 printf("cannot intuit interface index and type for %s\n", host);
 446                 return (1);
 447         }
 448         sdl_m.sdl_type = sdl->sdl_type;
 449         sdl_m.sdl_index = sdl->sdl_index;
 450         return (rtmsg(RTM_ADD));
 451 }
 452
 453 /*
 454  * Display an individual neighbor cache entry
 455  */
 456 void
 457 get(host)
 458         char *host;
 459 {
 460         struct sockaddr_in6 *sin = &sin_m;
 461         struct addrinfo hints, *res;
 462         int gai_error;
 463
 464         sin_m = blank_sin;
 465         bzero(&hints, sizeof(hints));
 466         hints.ai_family = AF_INET6;
 467         gai_error = getaddrinfo(host, NULL, &hints, &res);
 468         if (gai_error) {
 469                 fprintf(stderr, "ndp: %s: %s\n", host,
 470                     gai_strerror(gai_error));
 471                 return;
 472         }
 473         sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
 474         dump(&sin->sin6_addr, 0);
 475         if (found_entry == 0) {
 476                 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
 477                     sizeof(host_buf), NULL ,0,
 478                     (nflag ? NI_NUMERICHOST : 0));
 479                 printf("%s (%s) -- no entry\n", host, host_buf);
 480                 exit(1);
 481         }
 482 }
 483
 484 /*
 485  * Delete a neighbor cache entry
 486  */
 487 int
 488 delete(host)
 489         char *host;
 490 {
 491         struct sockaddr_in6 *sin = &sin_m;
 492         register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
 493         register char *cp = m_rtmsg.m_space;
 494         struct sockaddr_dl *sdl;
 495         struct addrinfo hints, *res;
 496         int gai_error;
 497
 498         getsocket();
 499         sin_m = blank_sin;
 500
 501         bzero(&hints, sizeof(hints));
 502         hints.ai_family = AF_INET6;
 503         gai_error = getaddrinfo(host, NULL, &hints, &res);
 504         if (gai_error) {
 505                 fprintf(stderr, "ndp: %s: %s\n", host,
 506                     gai_strerror(gai_error));
 507                 return 1;
 508         }
 509         sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
 510         sin->sin6_scope_id =
 511             ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
 512         if (rtmsg(RTM_GET) < 0) {
 513                 errx(1, "RTM_GET(%s) failed", host);
 514                 /* NOTREACHED */
 515         }
 516         sin = (struct sockaddr_in6 *)(rtm + 1);
 517         sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin);
 518         if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
 519                 if (sdl->sdl_family == AF_LINK &&
 520                     !(rtm->rtm_flags & RTF_GATEWAY)) {
 521                         goto delete;
 522                 }
 523                 fprintf(stderr, "delete: cannot delete non-NDP entry\n");
 524                 return 1;
 525         }
 526
 527 delete:
 528         if (sdl->sdl_family != AF_LINK) {
 529                 printf("cannot locate %s\n", host);
 530                 return (1);
 531         }
 532         /*
 533          * need to reinit the field because it has rt_key
 534          * but we want the actual address
 535          */
 536         NEXTADDR(RTA_DST, sin_m);
 537         rtm->rtm_flags |= RTF_LLDATA;
 538         if (rtmsg(RTM_DELETE) == 0) {
 539                 getnameinfo((struct sockaddr *)sin,
 540                     sin->sin6_len, host_buf,
 541                     sizeof(host_buf), NULL, 0,
 542                     (nflag ? NI_NUMERICHOST : 0));
 543                 printf("%s (%s) deleted\n", host, host_buf);
 544         }
 545
 546         return 0;
 547 }
 548
 549 #define W_ADDR  36
 550 #define W_LL    17
 551 #define W_IF    6
 552
 553 /*
 554  * Dump the entire neighbor cache
 555  */
 556 void
 557 dump(addr, cflag)
 558         struct in6_addr *addr;
 559         int cflag;
 560 {
 561         int mib[6];
 562         size_t needed;
 563         char *lim, *buf, *next;
 564         struct rt_msghdr *rtm;
 565         struct sockaddr_in6 *sin;
 566         struct sockaddr_dl *sdl;
 567         extern int h_errno;
 568         struct in6_nbrinfo *nbi;
 569         struct timeval time;
 570         int addrwidth;
 571         int llwidth;
 572         int ifwidth;
 573         char flgbuf[8];
 574         char *ifname;
 575
 576         /* Print header */
 577         if (!tflag && !cflag)
 578                 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n",
 579                     W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address",
 580                     W_IF, W_IF, "Netif", "Expire", "S", "Flags");
 581
 582 again:;
 583         mib[0] = CTL_NET;
 584         mib[1] = PF_ROUTE;
 585         mib[2] = 0;
 586         mib[3] = AF_INET6;
 587         mib[4] = NET_RT_FLAGS;
 588 #ifdef RTF_LLINFO
 589         mib[5] = RTF_LLINFO;
 590 #else
 591         mib[5] = 0;
 592 #endif
 593         if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
 594                 err(1, "sysctl(PF_ROUTE estimate)");
 595         if (needed > 0) {
 596                 if ((buf = malloc(needed)) == NULL)
 597                         err(1, "malloc");
 598                 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
 599                         err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)");
 600                 lim = buf + needed;
 601         } else
 602                 buf = lim = NULL;
 603
 604         for (next = buf; next && next < lim; next += rtm->rtm_msglen) {
 605                 int isrouter = 0, prbs = 0;
 606
 607                 rtm = (struct rt_msghdr *)next;
 608                 sin = (struct sockaddr_in6 *)(rtm + 1);
 609                 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len));
 610
 611                 /*
 612                  * Some OSes can produce a route that has the LINK flag but
 613                  * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD
 614                  * and BSD/OS, where xx is not the interface identifier on
 615                  * lo0).  Such routes entry would annoy getnbrinfo() below,
 616                  * so we skip them.
 617                  * XXX: such routes should have the GATEWAY flag, not the
 618                  * LINK flag.  However, there is rotten routing software
 619                  * that advertises all routes that have the GATEWAY flag.
 620                  * Thus, KAME kernel intentionally does not set the LINK flag.
 621                  * What is to be fixed is not ndp, but such routing software
 622                  * (and the kernel workaround)...
 623                  */
 624                 if (sdl->sdl_family != AF_LINK)
 625                         continue;
 626
 627                 if (!(rtm->rtm_flags & RTF_HOST))
 628                         continue;
 629
 630                 if (addr) {
 631                         if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr))
 632                                 continue;
 633                         found_entry = 1;
 634                 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr))
 635                         continue;
 636                 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) ||
 637                     IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) {
 638                         /* XXX: should scope id be filled in the kernel? */
 639                         if (sin->sin6_scope_id == 0)
 640                                 sin->sin6_scope_id = sdl->sdl_index;
 641                 }
 642                 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
 643                     sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0));
 644                 if (cflag) {
 645 #ifdef RTF_WASCLONED
 646                         if (rtm->rtm_flags & RTF_WASCLONED)
 647                                 delete(host_buf);
 648 #elif defined(RTF_CLONED)
 649                         if (rtm->rtm_flags & RTF_CLONED)
 650                                 delete(host_buf);
 651 #else
 652                         delete(host_buf);
 653 #endif
 654                         continue;
 655                 }
 656                 gettimeofday(&time, 0);
 657                 if (tflag)
 658                         ts_print(&time);
 659
 660                 addrwidth = strlen(host_buf);
 661                 if (addrwidth < W_ADDR)
 662                         addrwidth = W_ADDR;
 663                 llwidth = strlen(ether_str(sdl));
 664                 if (W_ADDR + W_LL - addrwidth > llwidth)
 665                         llwidth = W_ADDR + W_LL - addrwidth;
 666                 ifname = if_indextoname(sdl->sdl_index, ifix_buf);
 667                 if (!ifname)
 668                         ifname = "?";
 669                 ifwidth = strlen(ifname);
 670                 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth)
 671                         ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth;
 672
 673                 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf,
 674                     llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname);
 675
 676                 /* Print neighbor discovery specific informations */
 677                 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1);
 678                 if (nbi) {
 679                         if (nbi->expire > time.tv_sec) {
 680                                 printf(" %-9.9s",
 681                                     sec2str(nbi->expire - time.tv_sec));
 682                         } else if (nbi->expire == 0)
 683                                 printf(" %-9.9s", "permanent");
 684                         else
 685                                 printf(" %-9.9s", "expired");
 686
 687                         switch (nbi->state) {
 688                         case ND6_LLINFO_NOSTATE:
 689                                  printf(" N");
 690                                  break;
 691 #ifdef ND6_LLINFO_WAITDELETE
 692                         case ND6_LLINFO_WAITDELETE:
 693                                  printf(" W");
 694                                  break;
 695 #endif
 696                         case ND6_LLINFO_INCOMPLETE:
 697                                  printf(" I");
 698                                  break;
 699                         case ND6_LLINFO_REACHABLE:
 700                                  printf(" R");
 701                                  break;
 702                         case ND6_LLINFO_STALE:
 703                                  printf(" S");
 704                                  break;
 705                         case ND6_LLINFO_DELAY:
 706                                  printf(" D");
 707                                  break;
 708                         case ND6_LLINFO_PROBE:
 709                                  printf(" P");
 710                                  break;
 711                         default:
 712                                  printf(" ?");
 713                                  break;
 714                         }
 715
 716                         isrouter = nbi->isrouter;
 717                         prbs = nbi->asked;
 718                 } else {
 719                         warnx("failed to get neighbor information");
 720                         printf("  ");
 721                 }
 722
 723                 /*
 724                  * other flags. R: router, P: proxy, W: ??
 725                  */
 726                 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
 727                         snprintf(flgbuf, sizeof(flgbuf), "%s%s",
 728                             isrouter ? "R" : "",
 729                             (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
 730                 } else {
 731                         sin = (struct sockaddr_in6 *)
 732                             (sdl->sdl_len + (char *)sdl);
 733 #if 0   /* W and P are mystery even for us */
 734                         snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s",
 735                             isrouter ? "R" : "",
 736                             !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "",
 737                             (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "",
 738                             (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
 739 #else
 740                         snprintf(flgbuf, sizeof(flgbuf), "%s%s",
 741                             isrouter ? "R" : "",
 742                             (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
 743 #endif
 744                 }
 745                 printf(" %s", flgbuf);
 746
 747                 if (prbs)
 748                         printf(" %d", prbs);
 749
 750                 printf("\n");
 751         }
 752         if (buf != NULL)
 753                 free(buf);
 754
 755         if (repeat) {
 756                 printf("\n");
 757                 fflush(stdout);
 758                 sleep(repeat);
 759                 goto again;
 760         }
 761 }
 762
 763 static struct in6_nbrinfo *
 764 getnbrinfo(addr, ifindex, warning)
 765         struct in6_addr *addr;
 766         int ifindex;
 767         int warning;
 768 {
 769         static struct in6_nbrinfo nbi;
 770         int s;
 771
 772         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
 773                 err(1, "socket");
 774
 775         bzero(&nbi, sizeof(nbi));
 776         if_indextoname(ifindex, nbi.ifname);
 777         nbi.addr = *addr;
 778         if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) {
 779                 if (warning)
 780                         warn("ioctl(SIOCGNBRINFO_IN6)");
 781                 close(s);
 782                 return(NULL);
 783         }
 784
 785         close(s);
 786         return(&nbi);
 787 }
 788
 789 static char *
 790 ether_str(struct sockaddr_dl *sdl)
 791 {
 792         static char hbuf[NI_MAXHOST];
 793         char *cp;
 794
 795         if (sdl->sdl_alen == ETHER_ADDR_LEN) {
 796                 strlcpy(hbuf, ether_ntoa((struct ether_addr *)LLADDR(sdl)),
 797                     sizeof(hbuf));
 798         } else if (sdl->sdl_alen) {
 799                 int n = sdl->sdl_nlen > 0 ? sdl->sdl_nlen + 1 : 0;
 800                 snprintf(hbuf, sizeof(hbuf), "%s", link_ntoa(sdl) + n);
 801         } else
 802                 snprintf(hbuf, sizeof(hbuf), "(incomplete)");
 803
 804         return(hbuf);
 805 }
 806
 807 int
 808 ndp_ether_aton(a, n)
 809         char *a;
 810         u_char *n;
 811 {
 812         int i, o[6];
 813
 814         i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2],
 815             &o[3], &o[4], &o[5]);
 816         if (i != 6) {
 817                 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a);
 818                 return (1);
 819         }
 820         for (i = 0; i < 6; i++)
 821                 n[i] = o[i];
 822         return (0);
 823 }
 824
 825 void
 826 usage()
 827 {
 828         printf("usage: ndp [-nt] hostname\n");
 829         printf("       ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n");
 830         printf("       ndp [-nt] -A wait\n");
 831         printf("       ndp [-nt] -d hostname\n");
 832         printf("       ndp [-nt] -f filename\n");
 833         printf("       ndp [-nt] -i interface [flags...]\n");
 834 #ifdef SIOCSDEFIFACE_IN6
 835         printf("       ndp [-nt] -I [interface|delete]\n");
 836 #endif
 837         printf("       ndp [-nt] -s nodename etheraddr [temp] [proxy]\n");
 838         exit(1);
 839 }
 840
 841 int
 842 rtmsg(cmd)
 843         int cmd;
 844 {
 845         static int seq;
 846         int rlen;
 847         register struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
 848         register char *cp = m_rtmsg.m_space;
 849         register int l;
 850
 851         errno = 0;
 852         if (cmd == RTM_DELETE)
 853                 goto doit;
 854         bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
 855         rtm->rtm_flags = flags;
 856         rtm->rtm_version = RTM_VERSION;
 857
 858         switch (cmd) {
 859         default:
 860                 fprintf(stderr, "ndp: internal wrong cmd\n");
 861                 exit(1);
 862         case RTM_ADD:
 863                 rtm->rtm_addrs |= RTA_GATEWAY;
 864                 if (expire_time) {
 865                         rtm->rtm_rmx.rmx_expire = expire_time;
 866                         rtm->rtm_inits = RTV_EXPIRE;
 867                 }
 868                 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA);
 869 #if 0 /* we don't support ipv6addr/128 type proxying */
 870                 if (rtm->rtm_flags & RTF_ANNOUNCE) {
 871                         rtm->rtm_flags &= ~RTF_HOST;
 872                         rtm->rtm_addrs |= RTA_NETMASK;
 873                 }
 874 #endif
 875                 /* FALLTHROUGH */
 876         case RTM_GET:
 877                 rtm->rtm_addrs |= RTA_DST;
 878         }
 879
 880         NEXTADDR(RTA_DST, sin_m);
 881         NEXTADDR(RTA_GATEWAY, sdl_m);
 882 #if 0 /* we don't support ipv6addr/128 type proxying */
 883         memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr));
 884         NEXTADDR(RTA_NETMASK, so_mask);
 885 #endif
 886
 887         rtm->rtm_msglen = cp - (char *)&m_rtmsg;
 888 doit:
 889         l = rtm->rtm_msglen;
 890         rtm->rtm_seq = ++seq;
 891         rtm->rtm_type = cmd;
 892         if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
 893                 if (errno != ESRCH || cmd != RTM_DELETE) {
 894                         err(1, "writing to routing socket");
 895                         /* NOTREACHED */
 896                 }
 897         }
 898         do {
 899                 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
 900         } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
 901         if (l < 0)
 902                 (void) fprintf(stderr, "ndp: read from routing socket: %s\n",
 903                     strerror(errno));
 904         return (0);
 905 }
 906
 907 void
 908 ifinfo(ifname, argc, argv)
 909         char *ifname;
 910         int argc;
 911         char **argv;
 912 {
 913         struct in6_ndireq nd;
 914         int i, s;
 915         u_int32_t newflags;
 916 #ifdef IPV6CTL_USETEMPADDR
 917         u_int8_t nullbuf[8];
 918 #endif
 919
 920         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
 921                 err(1, "socket");
 922                 /* NOTREACHED */
 923         }
 924         bzero(&nd, sizeof(nd));
 925         strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
 926         if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
 927                 err(1, "ioctl(SIOCGIFINFO_IN6)");
 928                 /* NOTREACHED */
 929         }
 930 #define ND nd.ndi
 931         newflags = ND.flags;
 932         for (i = 0; i < argc; i++) {
 933                 int clear = 0;
 934                 char *cp = argv[i];
 935
 936                 if (*cp == '-') {
 937                         clear = 1;
 938                         cp++;
 939                 }
 940
 941 #define SETFLAG(s, f) \
 942         do {\
 943                 if (strcmp(cp, (s)) == 0) {\
 944                         if (clear)\
 945                                 newflags &= ~(f);\
 946                         else\
 947                                 newflags |= (f);\
 948                 }\
 949         } while (0)
 950 /*
 951  * XXX: this macro is not 100% correct, in that it matches "nud" against
 952  *      "nudbogus".  But we just let it go since this is minor.
 953  */
 954 #define SETVALUE(f, v) \
 955         do { \
 956                 char *valptr; \
 957                 unsigned long newval; \
 958                 v = 0; /* unspecified */ \
 959                 if (strncmp(cp, f, strlen(f)) == 0) { \
 960                         valptr = strchr(cp, '='); \
 961                         if (valptr == NULL) \
 962                                 err(1, "syntax error in %s field", (f)); \
 963                         errno = 0; \
 964                         newval = strtoul(++valptr, NULL, 0); \
 965                         if (errno) \
 966                                 err(1, "syntax error in %s's value", (f)); \
 967                         v = newval; \
 968                 } \
 969         } while (0)
 970
 971                 SETFLAG("disabled", ND6_IFF_IFDISABLED);
 972                 SETFLAG("nud", ND6_IFF_PERFORMNUD);
 973 #ifdef ND6_IFF_ACCEPT_RTADV
 974                 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV);
 975 #endif
 976 #ifdef ND6_IFF_AUTO_LINKLOCAL
 977                 SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL);
 978 #endif
 979 #ifdef ND6_IFF_NO_PREFER_IFACE
 980                 SETFLAG("no_prefer_iface", ND6_IFF_NO_PREFER_IFACE);
 981 #endif
 982                 SETVALUE("basereachable", ND.basereachable);
 983                 SETVALUE("retrans", ND.retrans);
 984                 SETVALUE("curhlim", ND.chlim);
 985
 986                 ND.flags = newflags;
 987                 if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) {
 988                         err(1, "ioctl(SIOCSIFINFO_IN6)");
 989                         /* NOTREACHED */
 990                 }
 991 #undef SETFLAG
 992 #undef SETVALUE
 993         }
 994
 995         if (!ND.initialized) {
 996                 errx(1, "%s: not initialized yet", ifname);
 997                 /* NOTREACHED */
 998         }
 999
1000         if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
1001                 err(1, "ioctl(SIOCGIFINFO_IN6)");
1002                 /* NOTREACHED */
1003         }
1004         printf("linkmtu=%d", ND.linkmtu);
1005         printf(", maxmtu=%d", ND.maxmtu);
1006         printf(", curhlim=%d", ND.chlim);
1007         printf(", basereachable=%ds%dms",
1008             ND.basereachable / 1000, ND.basereachable % 1000);
1009         printf(", reachable=%ds", ND.reachable);
1010         printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
1011 #ifdef IPV6CTL_USETEMPADDR
1012         memset(nullbuf, 0, sizeof(nullbuf));
1013         if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) {
1014                 int j;
1015                 u_int8_t *rbuf;
1016
1017                 for (i = 0; i < 3; i++) {
1018                         switch (i) {
1019                         case 0:
1020                                 printf("\nRandom seed(0): ");
1021                                 rbuf = ND.randomseed0;
1022                                 break;
1023                         case 1:
1024                                 printf("\nRandom seed(1): ");
1025                                 rbuf = ND.randomseed1;
1026                                 break;
1027                         case 2:
1028                                 printf("\nRandom ID:      ");
1029                                 rbuf = ND.randomid;
1030                                 break;
1031                         default:
1032                                 errx(1, "impossible case for tempaddr display");
1033                         }
1034                         for (j = 0; j < 8; j++)
1035                                 printf("%02x", rbuf[j]);
1036                 }
1037         }
1038 #endif
1039         if (ND.flags) {
1040                 printf("\nFlags: ");
1041 #ifdef ND6_IFF_IFDISABLED
1042                 if ((ND.flags & ND6_IFF_IFDISABLED))
1043                         printf("disabled ");
1044 #endif
1045                 if ((ND.flags & ND6_IFF_PERFORMNUD))
1046                         printf("nud ");
1047 #ifdef ND6_IFF_ACCEPT_RTADV
1048                 if ((ND.flags & ND6_IFF_ACCEPT_RTADV))
1049                         printf("accept_rtadv ");
1050 #endif
1051 #ifdef ND6_IFF_AUTO_LINKLOCAL
1052                 if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL))
1053                         printf("auto_linklocal ");
1054 #endif
1055 #ifdef ND6_IFF_NO_PREFER_IFACE
1056                 if ((ND.flags & ND6_IFF_NO_PREFER_IFACE))
1057                         printf("no_prefer_iface ");
1058 #endif
1059         }
1060         putc('\n', stdout);
1061 #undef ND
1062
1063         close(s);
1064 }
1065
1066 #ifndef ND_RA_FLAG_RTPREF_MASK  /* XXX: just for compilation on *BSD release */
1067 #define ND_RA_FLAG_RTPREF_MASK  0x18 /* 00011000 */
1068 #endif
1069
1070 void
1071 rtrlist()
1072 {
1073 #ifdef ICMPV6CTL_ND6_DRLIST
1074         int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST };
1075         char *buf;
1076         struct in6_defrouter *p, *ep;
1077         size_t l;
1078         struct timeval time;
1079
1080         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1081                 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1082                 /*NOTREACHED*/
1083         }
1084         if (l == 0)
1085                 return;
1086         buf = malloc(l);
1087         if (!buf) {
1088                 err(1, "malloc");
1089                 /*NOTREACHED*/
1090         }
1091         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1092                 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1093                 /*NOTREACHED*/
1094         }
1095
1096         ep = (struct in6_defrouter *)(buf + l);
1097         for (p = (struct in6_defrouter *)buf; p < ep; p++) {
1098                 int rtpref;
1099
1100                 if (getnameinfo((struct sockaddr *)&p->rtaddr,
1101                     p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0,
1102                     (nflag ? NI_NUMERICHOST : 0)) != 0)
1103                         strlcpy(host_buf, "?", sizeof(host_buf));
1104
1105                 printf("%s if=%s", host_buf,
1106                     if_indextoname(p->if_index, ifix_buf));
1107                 printf(", flags=%s%s",
1108                     p->flags & ND_RA_FLAG_MANAGED ? "M" : "",
1109                     p->flags & ND_RA_FLAG_OTHER   ? "O" : "");
1110                 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff;
1111                 printf(", pref=%s", rtpref_str[rtpref]);
1112
1113                 gettimeofday(&time, 0);
1114                 if (p->expire == 0)
1115                         printf(", expire=Never\n");
1116                 else
1117                         printf(", expire=%s\n",
1118                             sec2str(p->expire - time.tv_sec));
1119         }
1120         free(buf);
1121 #else
1122         struct in6_drlist dr;
1123         int s, i;
1124         struct timeval time;
1125
1126         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1127                 err(1, "socket");
1128                 /* NOTREACHED */
1129         }
1130         bzero(&dr, sizeof(dr));
1131         strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */
1132         if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
1133                 err(1, "ioctl(SIOCGDRLST_IN6)");
1134                 /* NOTREACHED */
1135         }
1136 #define DR dr.defrouter[i]
1137         for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) {
1138                 struct sockaddr_in6 sin6;
1139
1140                 bzero(&sin6, sizeof(sin6));
1141                 sin6.sin6_family = AF_INET6;
1142                 sin6.sin6_len = sizeof(sin6);
1143                 sin6.sin6_addr = DR.rtaddr;
1144                 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf,
1145                     sizeof(host_buf), NULL, 0,
1146                     (nflag ? NI_NUMERICHOST : 0));
1147
1148                 printf("%s if=%s", host_buf,
1149                     if_indextoname(DR.if_index, ifix_buf));
1150                 printf(", flags=%s%s",
1151                     DR.flags & ND_RA_FLAG_MANAGED ? "M" : "",
1152                     DR.flags & ND_RA_FLAG_OTHER   ? "O" : "");
1153                 gettimeofday(&time, 0);
1154                 if (DR.expire == 0)
1155                         printf(", expire=Never\n");
1156                 else
1157                         printf(", expire=%s\n",
1158                             sec2str(DR.expire - time.tv_sec));
1159         }
1160 #undef DR
1161         close(s);
1162 #endif
1163 }
1164
1165 void
1166 plist()
1167 {
1168 #ifdef ICMPV6CTL_ND6_PRLIST
1169         int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST };
1170         char *buf;
1171         struct in6_prefix *p, *ep, *n;
1172         struct sockaddr_in6 *advrtr;
1173         size_t l;
1174         struct timeval time;
1175         const int niflags = NI_NUMERICHOST;
1176         int ninflags = nflag ? NI_NUMERICHOST : 0;
1177         char namebuf[NI_MAXHOST];
1178
1179         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1180                 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1181                 /*NOTREACHED*/
1182         }
1183         buf = malloc(l);
1184         if (!buf) {
1185                 err(1, "malloc");
1186                 /*NOTREACHED*/
1187         }
1188         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1189                 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1190                 /*NOTREACHED*/
1191         }
1192
1193         ep = (struct in6_prefix *)(buf + l);
1194         for (p = (struct in6_prefix *)buf; p < ep; p = n) {
1195                 advrtr = (struct sockaddr_in6 *)(p + 1);
1196                 n = (struct in6_prefix *)&advrtr[p->advrtrs];
1197
1198                 if (getnameinfo((struct sockaddr *)&p->prefix,
1199                     p->prefix.sin6_len, namebuf, sizeof(namebuf),
1200                     NULL, 0, niflags) != 0)
1201                         strlcpy(namebuf, "?", sizeof(namebuf));
1202                 printf("%s/%d if=%s\n", namebuf, p->prefixlen,
1203                     if_indextoname(p->if_index, ifix_buf));
1204
1205                 gettimeofday(&time, 0);
1206                 /*
1207                  * meaning of fields, especially flags, is very different
1208                  * by origin.  notify the difference to the users.
1209                  */
1210                 printf("flags=%s%s%s%s%s",
1211                     p->raflags.onlink ? "L" : "",
1212                     p->raflags.autonomous ? "A" : "",
1213                     (p->flags & NDPRF_ONLINK) != 0 ? "O" : "",
1214                     (p->flags & NDPRF_DETACHED) != 0 ? "D" : "",
1215 #ifdef NDPRF_HOME
1216                     (p->flags & NDPRF_HOME) != 0 ? "H" : ""
1217 #else
1218                     ""
1219 #endif
1220                     );
1221                 if (p->vltime == ND6_INFINITE_LIFETIME)
1222                         printf(" vltime=infinity");
1223                 else
1224                         printf(" vltime=%lu", (unsigned long)p->vltime);
1225                 if (p->pltime == ND6_INFINITE_LIFETIME)
1226                         printf(", pltime=infinity");
1227                 else
1228                         printf(", pltime=%lu", (unsigned long)p->pltime);
1229                 if (p->expire == 0)
1230                         printf(", expire=Never");
1231                 else if (p->expire >= time.tv_sec)
1232                         printf(", expire=%s",
1233                             sec2str(p->expire - time.tv_sec));
1234                 else
1235                         printf(", expired");
1236                 printf(", ref=%d", p->refcnt);
1237                 printf("\n");
1238                 /*
1239                  * "advertising router" list is meaningful only if the prefix
1240                  * information is from RA.
1241                  */
1242                 if (p->advrtrs) {
1243                         int j;
1244                         struct sockaddr_in6 *sin6;
1245
1246                         sin6 = advrtr;
1247                         printf("  advertised by\n");
1248                         for (j = 0; j < p->advrtrs; j++) {
1249                                 struct in6_nbrinfo *nbi;
1250
1251                                 if (getnameinfo((struct sockaddr *)sin6,
1252                                     sin6->sin6_len, namebuf, sizeof(namebuf),
1253                                     NULL, 0, ninflags) != 0)
1254                                         strlcpy(namebuf, "?", sizeof(namebuf));
1255                                 printf("    %s", namebuf);
1256
1257                                 nbi = getnbrinfo(&sin6->sin6_addr,
1258                                     p->if_index, 0);
1259                                 if (nbi) {
1260                                         switch (nbi->state) {
1261                                         case ND6_LLINFO_REACHABLE:
1262                                         case ND6_LLINFO_STALE:
1263                                         case ND6_LLINFO_DELAY:
1264                                         case ND6_LLINFO_PROBE:
1265                                                 printf(" (reachable)\n");
1266                                                 break;
1267                                         default:
1268                                                 printf(" (unreachable)\n");
1269                                         }
1270                                 } else
1271                                         printf(" (no neighbor state)\n");
1272                                 sin6++;
1273                         }
1274                 } else
1275                         printf("  No advertising router\n");
1276         }
1277         free(buf);
1278 #else
1279         struct in6_prlist pr;
1280         int s, i;
1281         struct timeval time;
1282
1283         gettimeofday(&time, 0);
1284
1285         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1286                 err(1, "socket");
1287                 /* NOTREACHED */
1288         }
1289         bzero(&pr, sizeof(pr));
1290         strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */
1291         if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
1292                 err(1, "ioctl(SIOCGPRLST_IN6)");
1293                 /* NOTREACHED */
1294         }
1295 #define PR pr.prefix[i]
1296         for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
1297                 struct sockaddr_in6 p6;
1298                 char namebuf[NI_MAXHOST];
1299                 int niflags;
1300
1301 #ifdef NDPRF_ONLINK
1302                 p6 = PR.prefix;
1303 #else
1304                 memset(&p6, 0, sizeof(p6));
1305                 p6.sin6_family = AF_INET6;
1306                 p6.sin6_len = sizeof(p6);
1307                 p6.sin6_addr = PR.prefix;
1308 #endif
1309                 niflags = NI_NUMERICHOST;
1310                 if (getnameinfo((struct sockaddr *)&p6,
1311                     sizeof(p6), namebuf, sizeof(namebuf),
1312                     NULL, 0, niflags)) {
1313                         warnx("getnameinfo failed");
1314                         continue;
1315                 }
1316                 printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
1317                     if_indextoname(PR.if_index, ifix_buf));
1318
1319                 gettimeofday(&time, 0);
1320                 /*
1321                  * meaning of fields, especially flags, is very different
1322                  * by origin.  notify the difference to the users.
1323                  */
1324 #if 0
1325                 printf("  %s",
1326                     PR.origin == PR_ORIG_RA ? "" : "advertise: ");
1327 #endif
1328 #ifdef NDPRF_ONLINK
1329                 printf("flags=%s%s%s%s%s",
1330                     PR.raflags.onlink ? "L" : "",
1331                     PR.raflags.autonomous ? "A" : "",
1332                     (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "",
1333                     (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "",
1334 #ifdef NDPRF_HOME
1335                     (PR.flags & NDPRF_HOME) != 0 ? "H" : ""
1336 #else
1337                     ""
1338 #endif
1339                     );
1340 #else
1341                 printf("flags=%s%s",
1342                     PR.raflags.onlink ? "L" : "",
1343                     PR.raflags.autonomous ? "A" : "");
1344 #endif
1345                 if (PR.vltime == ND6_INFINITE_LIFETIME)
1346                         printf(" vltime=infinity");
1347                 else
1348                         printf(" vltime=%lu", PR.vltime);
1349                 if (PR.pltime == ND6_INFINITE_LIFETIME)
1350                         printf(", pltime=infinity");
1351                 else
1352                         printf(", pltime=%lu", PR.pltime);
1353                 if (PR.expire == 0)
1354                         printf(", expire=Never");
1355                 else if (PR.expire >= time.tv_sec)
1356                         printf(", expire=%s",
1357                             sec2str(PR.expire - time.tv_sec));
1358                 else
1359                         printf(", expired");
1360 #ifdef NDPRF_ONLINK
1361                 printf(", ref=%d", PR.refcnt);
1362 #endif
1363 #if 0
1364                 switch (PR.origin) {
1365                 case PR_ORIG_RA:
1366                         printf(", origin=RA");
1367                         break;
1368                 case PR_ORIG_RR:
1369                         printf(", origin=RR");
1370                         break;
1371                 case PR_ORIG_STATIC:
1372                         printf(", origin=static");
1373                         break;
1374                 case PR_ORIG_KERNEL:
1375                         printf(", origin=kernel");
1376                         break;
1377                 default:
1378                         printf(", origin=?");
1379                         break;
1380                 }
1381 #endif
1382                 printf("\n");
1383                 /*
1384                  * "advertising router" list is meaningful only if the prefix
1385                  * information is from RA.
1386                  */
1387                 if (0 &&        /* prefix origin is almost obsolted */
1388                     PR.origin != PR_ORIG_RA)
1389                         ;
1390                 else if (PR.advrtrs) {
1391                         int j;
1392                         printf("  advertised by\n");
1393                         for (j = 0; j < PR.advrtrs; j++) {
1394                                 struct sockaddr_in6 sin6;
1395                                 struct in6_nbrinfo *nbi;
1396
1397                                 bzero(&sin6, sizeof(sin6));
1398                                 sin6.sin6_family = AF_INET6;
1399                                 sin6.sin6_len = sizeof(sin6);
1400                                 sin6.sin6_addr = PR.advrtr[j];
1401                                 sin6.sin6_scope_id = PR.if_index; /* XXX */
1402                                 getnameinfo((struct sockaddr *)&sin6,
1403                                     sin6.sin6_len, host_buf,
1404                                     sizeof(host_buf), NULL, 0,
1405                                     (nflag ? NI_NUMERICHOST : 0));
1406                                 printf("    %s", host_buf);
1407
1408                                 nbi = getnbrinfo(&sin6.sin6_addr,
1409                                     PR.if_index, 0);
1410                                 if (nbi) {
1411                                         switch (nbi->state) {
1412                                         case ND6_LLINFO_REACHABLE:
1413                                         case ND6_LLINFO_STALE:
1414                                         case ND6_LLINFO_DELAY:
1415                                         case ND6_LLINFO_PROBE:
1416                                                  printf(" (reachable)\n");
1417                                                  break;
1418                                         default:
1419                                                  printf(" (unreachable)\n");
1420                                         }
1421                                 } else
1422                                         printf(" (no neighbor state)\n");
1423                         }
1424                         if (PR.advrtrs > DRLSTSIZ)
1425                                 printf("    and %d routers\n",
1426                                     PR.advrtrs - DRLSTSIZ);
1427                 } else
1428                         printf("  No advertising router\n");
1429         }
1430 #undef PR
1431         close(s);
1432 #endif
1433 }
1434
1435 void
1436 pfx_flush()
1437 {
1438         char dummyif[IFNAMSIZ+8];
1439         int s;
1440
1441         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1442                 err(1, "socket");
1443         strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1444         if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
1445                 err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
1446 }
1447
1448 void
1449 rtr_flush()
1450 {
1451         char dummyif[IFNAMSIZ+8];
1452         int s;
1453
1454         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1455                 err(1, "socket");
1456         strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1457         if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
1458                 err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
1459
1460         close(s);
1461 }
1462
1463 void
1464 harmonize_rtr()
1465 {
1466         char dummyif[IFNAMSIZ+8];
1467         int s;
1468
1469         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1470                 err(1, "socket");
1471         strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */
1472         if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
1473                 err(1, "ioctl(SIOCSNDFLUSH_IN6)");
1474
1475         close(s);
1476 }
1477
1478 #ifdef SIOCSDEFIFACE_IN6        /* XXX: check SIOCGDEFIFACE_IN6 as well? */
1479 static void
1480 setdefif(ifname)
1481         char *ifname;
1482 {
1483         struct in6_ndifreq ndifreq;
1484         unsigned int ifindex;
1485
1486         if (strcasecmp(ifname, "delete") == 0)
1487                 ifindex = 0;
1488         else {
1489                 if ((ifindex = if_nametoindex(ifname)) == 0)
1490                         err(1, "failed to resolve i/f index for %s", ifname);
1491         }
1492
1493         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1494                 err(1, "socket");
1495
1496         strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1497         ndifreq.ifindex = ifindex;
1498
1499         if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1500                 err(1, "ioctl(SIOCSDEFIFACE_IN6)");
1501
1502         close(s);
1503 }
1504
1505 static void
1506 getdefif()
1507 {
1508         struct in6_ndifreq ndifreq;
1509         char ifname[IFNAMSIZ+8];
1510
1511         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1512                 err(1, "socket");
1513
1514         memset(&ndifreq, 0, sizeof(ndifreq));
1515         strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */
1516
1517         if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1518                 err(1, "ioctl(SIOCGDEFIFACE_IN6)");
1519
1520         if (ndifreq.ifindex == 0)
1521                 printf("No default interface.\n");
1522         else {
1523                 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL)
1524                         err(1, "failed to resolve ifname for index %lu",
1525                             ndifreq.ifindex);
1526                 printf("ND default interface = %s\n", ifname);
1527         }
1528
1529         close(s);
1530 }
1531 #endif
1532
1533 static char *
1534 sec2str(total)
1535         time_t total;
1536 {
1537         static char result[256];
1538         int days, hours, mins, secs;
1539         int first = 1;
1540         char *p = result;
1541         char *ep = &result[sizeof(result)];
1542         int n;
1543
1544         days = total / 3600 / 24;
1545         hours = (total / 3600) % 24;
1546         mins = (total / 60) % 60;
1547         secs = total % 60;
1548
1549         if (days) {
1550                 first = 0;
1551                 n = snprintf(p, ep - p, "%dd", days);
1552                 if (n < 0 || n >= ep - p)
1553                         return "?";
1554                 p += n;
1555         }
1556         if (!first || hours) {
1557                 first = 0;
1558                 n = snprintf(p, ep - p, "%dh", hours);
1559                 if (n < 0 || n >= ep - p)
1560                         return "?";
1561                 p += n;
1562         }
1563         if (!first || mins) {
1564                 first = 0;
1565                 n = snprintf(p, ep - p, "%dm", mins);
1566                 if (n < 0 || n >= ep - p)
1567                         return "?";
1568                 p += n;
1569         }
1570         snprintf(p, ep - p, "%ds", secs);
1571
1572         return(result);
1573 }
1574
1575 /*
1576  * Print the timestamp
1577  * from tcpdump/util.c
1578  */
1579 static void
1580 ts_print(tvp)
1581         const struct timeval *tvp;
1582 {
1583         int s;
1584
1585         /* Default */
1586         s = (tvp->tv_sec + thiszone) % 86400;
1587         (void)printf("%02d:%02d:%02d.%06u ",
1588             s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec);
1589 }
1590
1591 #undef NEXTADDR