usr.sbin/ndp/ndp.c

   1 /*      $FreeBSD: src/usr.sbin/ndp/ndp.c,v 1.2.2.6 2003/08/12 16:27:57 ume Exp $        */
   2 /*      $KAME: ndp.c,v 1.65 2001/05/08 04:36:34 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  * 3. 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 #ifndef NI_WITHSCOPEID
 113 #define NI_WITHSCOPEID  0
 114 #endif
 115
 116 static int pid;
 117 static int cflag;
 118 static int nflag;
 119 static int tflag;
 120 static int32_t thiszone;        /* time difference with gmt */
 121 static int s = -1;
 122 static int repeat = 0;
 123
 124 char ntop_buf[INET6_ADDRSTRLEN];        /* inet_ntop() */
 125 char host_buf[NI_MAXHOST];              /* getnameinfo() */
 126 char ifix_buf[IFNAMSIZ];                /* if_indextoname() */
 127
 128 int file(char *);
 129 void getsocket(void);
 130 int set(int, char **);
 131 void get(char *);
 132 int delete(char *);
 133 void dump(struct in6_addr *);
 134 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *addr,
 135                                            int ifindex, int);
 136 static char *ether_str(struct sockaddr_dl *);
 137 int ndp_ether_aton(char *, u_char *);
 138 void usage(void);
 139 int rtmsg(int);
 140 void ifinfo(int, char **);
 141 void rtrlist(void);
 142 void plist(void);
 143 void pfx_flush(void);
 144 void rtrlist(void);
 145 void rtr_flush(void);
 146 void harmonize_rtr(void);
 147 #ifdef SIOCSDEFIFACE_IN6        /* XXX: check SIOCGDEFIFACE_IN6 as well? */
 148 static void getdefif(void);
 149 static void setdefif(char *);
 150 #endif
 151 static char *sec2str(time_t t);
 152 static char *ether_str(struct sockaddr_dl *sdl);
 153 static void ts_print(const struct timespec *);
 154
 155 static char *rtpref_str[] = {
 156         "medium",               /* 00 */
 157         "high",                 /* 01 */
 158         "rsv",                  /* 10 */
 159         "low"                   /* 11 */
 160 };
 161
 162 int
 163 main(int argc, char **argv)
 164 {
 165         int ch;
 166         int aflag = 0, dflag = 0, sflag = 0, Hflag = 0,
 167                 pflag = 0, rflag = 0, Pflag = 0, Rflag = 0;
 168
 169         pid = getpid();
 170         thiszone = gmt2local(0);
 171         while ((ch = getopt(argc, argv, "acndfIilprstA:HPR")) != -1)
 172                 switch ((char)ch) {
 173                 case 'a':
 174                         aflag = 1;
 175                         break;
 176                 case 'c':
 177                         cflag = 1;
 178                         break;
 179                 case 'd':
 180                         dflag = 1;
 181                         break;
 182                 case 'I':
 183 #ifdef SIOCSDEFIFACE_IN6        /* XXX: check SIOCGDEFIFACE_IN6 as well? */
 184                         if (argc > 2)
 185                                 setdefif(argv[2]);
 186                         getdefif(); /* always call it to print the result */
 187                         exit(0);
 188 #else
 189                         errx(1, "not supported yet");
 190                         /*NOTREACHED*/
 191 #endif
 192                 case 'i' :
 193                         argc -= optind;
 194                         argv += optind;
 195                         if (argc < 1)
 196                                 usage();
 197                         ifinfo(argc, argv);
 198                         exit(0);
 199                 case 'n':
 200                         nflag = 1;
 201                         continue;
 202                 case 'p':
 203                         pflag = 1;
 204                         break;
 205                 case 'f' :
 206                         if (argc != 3)
 207                                 usage();
 208                         file(argv[2]);
 209                         exit(0);
 210                 case 'l' :
 211                         /* obsolete, ignored */
 212                         break;
 213                 case 'r' :
 214                         rflag = 1;
 215                         break;
 216                 case 's':
 217                         sflag = 1;
 218                         break;
 219                 case 't':
 220                         tflag = 1;
 221                         break;
 222                 case 'A':
 223                         aflag = 1;
 224                         repeat = atoi(optarg);
 225                         if (repeat < 0)
 226                                 usage();
 227                         break;
 228                 case 'H' :
 229                         Hflag = 1;
 230                         break;
 231                 case 'P':
 232                         Pflag = 1;
 233                         break;
 234                 case 'R':
 235                         Rflag = 1;
 236                         break;
 237                 default:
 238                         usage();
 239                 }
 240
 241         argc -= optind;
 242         argv += optind;
 243
 244         if (aflag || cflag) {
 245                 dump(0);
 246                 exit(0);
 247         }
 248         if (dflag) {
 249                 if (argc != 1)
 250                         usage();
 251                 delete(argv[0]);
 252                 exit(0);
 253         }
 254         if (pflag) {
 255                 plist();
 256                 exit(0);
 257         }
 258         if (rflag) {
 259                 rtrlist();
 260                 exit(0);
 261         }
 262         if (sflag) {
 263                 if (argc < 2 || argc > 4)
 264                         usage();
 265                 exit(set(argc, argv) ? 1 : 0);
 266         }
 267         if (Hflag) {
 268                 harmonize_rtr();
 269                 exit(0);
 270         }
 271         if (Pflag) {
 272                 pfx_flush();
 273                 exit(0);
 274         }
 275         if (Rflag) {
 276                 rtr_flush();
 277                 exit(0);
 278         }
 279
 280         if (argc != 1)
 281                 usage();
 282         get(argv[0]);
 283         exit(0);
 284 }
 285
 286 /*
 287  * Process a file to set standard ndp entries
 288  */
 289 int
 290 file(char *name)
 291 {
 292         FILE *fp;
 293         int i, retval;
 294         char line[100], arg[5][50], *args[5];
 295
 296         if ((fp = fopen(name, "r")) == NULL) {
 297                 fprintf(stderr, "ndp: cannot open %s\n", name);
 298                 exit(1);
 299         }
 300         args[0] = &arg[0][0];
 301         args[1] = &arg[1][0];
 302         args[2] = &arg[2][0];
 303         args[3] = &arg[3][0];
 304         args[4] = &arg[4][0];
 305         retval = 0;
 306         while(fgets(line, 100, fp) != NULL) {
 307                 i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2],
 308                     arg[3], arg[4]);
 309                 if (i < 2) {
 310                         fprintf(stderr, "ndp: bad line: %s\n", line);
 311                         retval = 1;
 312                         continue;
 313                 }
 314                 if (set(i, args))
 315                         retval = 1;
 316         }
 317         fclose(fp);
 318         return (retval);
 319 }
 320
 321 void
 322 getsocket(void)
 323 {
 324         if (s < 0) {
 325                 s = socket(PF_ROUTE, SOCK_RAW, 0);
 326                 if (s < 0) {
 327                         perror("ndp: socket");
 328                         exit(1);
 329                 }
 330         }
 331 }
 332
 333 struct  sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 };
 334 struct  sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m;
 335 struct  sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m;
 336 int     flags, found_entry;
 337 time_t  expire_time;
 338 struct  {
 339         struct  rt_msghdr m_rtm;
 340         char    m_space[512];
 341 }       m_rtmsg;
 342
 343 /*
 344  * Set an individual neighbor cache entry
 345  */
 346 int
 347 set(int argc, char **argv)
 348 {
 349         struct sockaddr_in6 *sin = &sin_m;
 350         struct sockaddr_dl *sdl;
 351         struct rt_msghdr *rtm = &(m_rtmsg.m_rtm);
 352         struct addrinfo hints, *res;
 353         int gai_error;
 354         u_char *ea;
 355         char *host = argv[0], *eaddr = argv[1];
 356
 357         getsocket();
 358         argc -= 2;
 359         argv += 2;
 360         sdl_m = blank_sdl;
 361         sin_m = blank_sin;
 362
 363         bzero(&hints, sizeof(hints));
 364         hints.ai_family = AF_INET6;
 365         gai_error = getaddrinfo(host, NULL, &hints, &res);
 366         if (gai_error) {
 367                 fprintf(stderr, "ndp: %s: %s\n", host,
 368                         gai_strerror(gai_error));
 369                 return 1;
 370         }
 371         sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
 372 #ifdef __KAME__
 373         if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
 374                 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
 375                         htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
 376         }
 377 #endif
 378         ea = (u_char *)LLADDR(&sdl_m);
 379         if (ndp_ether_aton(eaddr, ea) == 0)
 380                 sdl_m.sdl_alen = 6;
 381         flags = 0;
 382         expire_time = 0;
 383         while (argc-- > 0) {
 384                 if (strncmp(argv[0], "temp", 4) == 0) {
 385                         struct timespec sp;
 386
 387                         clock_gettime(CLOCK_MONOTONIC, &sp);
 388                         expire_time = sp.tv_sec + 20 * 60;
 389                 } else if (strncmp(argv[0], "proxy", 5) == 0)
 390                         flags |= RTF_ANNOUNCE;
 391                 argv++;
 392         }
 393         if (rtmsg(RTM_GET) < 0) {
 394                 perror(host);
 395                 return (1);
 396         }
 397         sin = (struct sockaddr_in6 *)(rtm + 1);
 398         sdl = (struct sockaddr_dl *)(RT_ROUNDUP(sin->sin6_len) + (char *)sin);
 399         if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
 400                 if (sdl->sdl_family == AF_LINK &&
 401                     (rtm->rtm_flags & RTF_LLINFO) &&
 402                     !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) {
 403                 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023:
 404                 case IFT_ISO88024: case IFT_ISO88025:
 405                         goto overwrite;
 406                 }
 407                 /*
 408                  * IPv4 arp command retries with sin_other = SIN_PROXY here.
 409                  */
 410                 fprintf(stderr, "set: cannot configure a new entry\n");
 411                 return 1;
 412         }
 413
 414 overwrite:
 415         if (sdl->sdl_family != AF_LINK) {
 416                 printf("cannot intuit interface index and type for %s\n", host);
 417                 return (1);
 418         }
 419         sdl_m.sdl_type = sdl->sdl_type;
 420         sdl_m.sdl_index = sdl->sdl_index;
 421         return (rtmsg(RTM_ADD));
 422 }
 423
 424 /*
 425  * Display an individual neighbor cache entry
 426  */
 427 void
 428 get(char *host)
 429 {
 430         struct sockaddr_in6 *sin = &sin_m;
 431         struct addrinfo hints, *res;
 432         int gai_error;
 433
 434         sin_m = blank_sin;
 435         bzero(&hints, sizeof(hints));
 436         hints.ai_family = AF_INET6;
 437         gai_error = getaddrinfo(host, NULL, &hints, &res);
 438         if (gai_error) {
 439                 fprintf(stderr, "ndp: %s: %s\n", host,
 440                         gai_strerror(gai_error));
 441                 return;
 442         }
 443         sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
 444 #ifdef __KAME__
 445         if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
 446                 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
 447                         htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
 448         }
 449 #endif
 450         dump(&sin->sin6_addr);
 451         if (found_entry == 0) {
 452                 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
 453                             sizeof(host_buf), NULL ,0,
 454                             NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0));
 455                 printf("%s (%s) -- no entry\n", host, host_buf);
 456                 exit(1);
 457         }
 458 }
 459
 460 /*
 461  * Delete a neighbor cache entry
 462  */
 463 int
 464 delete(char *host)
 465 {
 466         struct sockaddr_in6 *sin = &sin_m;
 467         struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
 468         struct sockaddr_dl *sdl;
 469         struct addrinfo hints, *res;
 470         int gai_error;
 471
 472         getsocket();
 473         sin_m = blank_sin;
 474
 475         bzero(&hints, sizeof(hints));
 476         hints.ai_family = AF_INET6;
 477         gai_error = getaddrinfo(host, NULL, &hints, &res);
 478         if (gai_error) {
 479                 fprintf(stderr, "ndp: %s: %s\n", host,
 480                         gai_strerror(gai_error));
 481                 return 1;
 482         }
 483         sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
 484 #ifdef __KAME__
 485         if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) {
 486                 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] =
 487                         htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id);
 488         }
 489 #endif
 490         if (rtmsg(RTM_GET) < 0) {
 491                 perror(host);
 492                 return (1);
 493         }
 494         sin = (struct sockaddr_in6 *)(rtm + 1);
 495         sdl = (struct sockaddr_dl *)(RT_ROUNDUP(sin->sin6_len) + (char *)sin);
 496         if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) {
 497                 if (sdl->sdl_family == AF_LINK &&
 498                     (rtm->rtm_flags & RTF_LLINFO) &&
 499                     !(rtm->rtm_flags & RTF_GATEWAY)) {
 500                         goto delete;
 501                 }
 502                 /*
 503                  * IPv4 arp command retries with sin_other = SIN_PROXY here.
 504                  */
 505                 fprintf(stderr, "delete: cannot delete non-NDP entry\n");
 506                 return 1;
 507         }
 508
 509 delete:
 510         if (sdl->sdl_family != AF_LINK) {
 511                 printf("cannot locate %s\n", host);
 512                 return (1);
 513         }
 514         if (rtmsg(RTM_DELETE) == 0) {
 515                 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */
 516
 517 #ifdef __KAME__
 518                 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) {
 519                         s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]);
 520                         *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0;
 521                 }
 522 #endif
 523                 getnameinfo((struct sockaddr *)&s6,
 524                             s6.sin6_len, host_buf,
 525                             sizeof(host_buf), NULL, 0,
 526                             NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0));
 527                 printf("%s (%s) deleted\n", host, host_buf);
 528         }
 529
 530         return 0;
 531 }
 532
 533 #define W_ADDR  31
 534 #define W_LL    17
 535 #define W_IF    6
 536
 537 /*
 538  * Dump the entire neighbor cache
 539  */
 540 void
 541 dump(struct in6_addr *addr)
 542 {
 543         int mib[6];
 544         size_t needed;
 545         char *lim, *buf, *next;
 546         struct rt_msghdr *rtm;
 547         struct sockaddr_in6 *sin;
 548         struct sockaddr_dl *sdl;
 549         extern int h_errno;
 550         struct in6_nbrinfo *nbi;
 551         struct timespec sp;
 552         int addrwidth;
 553         int llwidth;
 554         int ifwidth;
 555         char flgbuf[8];
 556         char *ifname;
 557
 558         /* Print header */
 559         if (!tflag && !cflag)
 560                 printf("%-*.*s %-*.*s %*.*s %-9.9s %2s %4s %4s\n",
 561                     W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address",
 562                     W_IF, W_IF, "Netif", "Expire", "St", "Flgs", "Prbs");
 563
 564 again:;
 565         mib[0] = CTL_NET;
 566         mib[1] = PF_ROUTE;
 567         mib[2] = 0;
 568         mib[3] = AF_INET6;
 569         mib[4] = NET_RT_FLAGS;
 570         mib[5] = RTF_LLINFO;
 571         if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
 572                 err(1, "sysctl(PF_ROUTE estimate)");
 573         if (needed > 0) {
 574                 if ((buf = malloc(needed)) == NULL)
 575                         errx(1, "malloc");
 576                 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
 577                         err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)");
 578                 lim = buf + needed;
 579         } else
 580                 buf = lim = NULL;
 581
 582         for (next = buf; next && next < lim; next += rtm->rtm_msglen) {
 583                 int isrouter = 0, prbs = 0;
 584
 585                 rtm = (struct rt_msghdr *)next;
 586                 sin = (struct sockaddr_in6 *)(rtm + 1);
 587                 sdl = (struct sockaddr_dl *)((char *)sin +
 588                             RT_ROUNDUP(sin->sin6_len));
 589
 590                 /*
 591                  * Some OSes can produce a route that has the LINK flag but
 592                  * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD
 593                  * and BSD/OS, where xx is not the interface identifier on
 594                  * lo0).  Such routes entry would annoy getnbrinfo() below,
 595                  * so we skip them.
 596                  * XXX: such routes should have the GATEWAY flag, not the
 597                  * LINK flag.  However, there are rotten routing software
 598                  * that advertises all routes that have the GATEWAY flag.
 599                  * Thus, KAME kernel intentionally does not set the LINK flag.
 600                  * What is to be fixed is not ndp, but such routing software
 601                  * (and the kernel workaround)...
 602                  */
 603                 if (sdl->sdl_family != AF_LINK)
 604                         continue;
 605
 606                 if (addr) {
 607                         if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr))
 608                                 continue;
 609                         found_entry = 1;
 610                 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr))
 611                         continue;
 612                 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) ||
 613                     IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) {
 614                         /* XXX: should scope id be filled in the kernel? */
 615                         if (sin->sin6_scope_id == 0)
 616                                 sin->sin6_scope_id = sdl->sdl_index;
 617 #ifdef __KAME__
 618                         /* KAME specific hack; removed the embedded id */
 619                         *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0;
 620 #endif
 621                 }
 622                 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf,
 623                             sizeof(host_buf), NULL, 0,
 624                             NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0));
 625                 if (cflag == 1) {
 626 #ifdef RTF_WASCLONED
 627                         if (rtm->rtm_flags & RTF_WASCLONED)
 628                                 delete(host_buf);
 629 #else
 630                         delete(host_buf);
 631 #endif
 632                         continue;
 633                 }
 634                 clock_gettime(CLOCK_MONOTONIC, &sp);
 635                 if (tflag)
 636                         ts_print(&sp);
 637
 638                 addrwidth = strlen(host_buf);
 639                 if (addrwidth < W_ADDR)
 640                         addrwidth = W_ADDR;
 641                 llwidth = strlen(ether_str(sdl));
 642                 if (W_ADDR + W_LL - addrwidth > llwidth)
 643                         llwidth = W_ADDR + W_LL - addrwidth;
 644                 ifname = if_indextoname(sdl->sdl_index, ifix_buf);
 645                 if (!ifname)
 646                         ifname = "?";
 647                 ifwidth = strlen(ifname);
 648                 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth)
 649                         ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth;
 650
 651                 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf,
 652                     llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname);
 653
 654                 /* Print neighbor discovery specific informations */
 655                 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1);
 656                 if (nbi) {
 657                         if (nbi->expire > sp.tv_sec) {
 658                                 printf(" %-9.9s",
 659                                        sec2str(nbi->expire - sp.tv_sec));
 660                         } else if (nbi->expire == 0)
 661                                 printf(" %-9.9s", "permanent");
 662                         else
 663                                 printf(" %-9.9s", "expired");
 664
 665                         switch(nbi->state) {
 666                          case ND6_LLINFO_NOSTATE:
 667                                  printf(" N");
 668                                  break;
 669 #ifdef ND6_LLINFO_WAITDELETE
 670                          case ND6_LLINFO_WAITDELETE:
 671                                  printf(" W");
 672                                  break;
 673 #endif
 674                          case ND6_LLINFO_INCOMPLETE:
 675                                  printf(" I");
 676                                  break;
 677                          case ND6_LLINFO_REACHABLE:
 678                                  printf(" R");
 679                                  break;
 680                          case ND6_LLINFO_STALE:
 681                                  printf(" S");
 682                                  break;
 683                          case ND6_LLINFO_DELAY:
 684                                  printf(" D");
 685                                  break;
 686                          case ND6_LLINFO_PROBE:
 687                                  printf(" P");
 688                                  break;
 689                          default:
 690                                  printf(" ?");
 691                                  break;
 692                         }
 693
 694                         isrouter = nbi->isrouter;
 695                         prbs = nbi->asked;
 696                 } else {
 697                         warnx("failed to get neighbor information");
 698                         printf("  ");
 699                 }
 700                 putchar(' ');
 701
 702                 /*
 703                  * other flags. R: router, P: proxy, W: ??
 704                  */
 705                 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) {
 706                         snprintf(flgbuf, sizeof(flgbuf), "%s%s",
 707                                 isrouter ? "R" : "",
 708                                 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
 709                 } else {
 710                         sin = (struct sockaddr_in6 *)
 711                                 (sdl->sdl_len + (char *)sdl);
 712                         snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s",
 713                                 isrouter ? "R" : "",
 714                                 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr)
 715                                         ? "P" : "",
 716                                 (sin->sin6_len != sizeof(struct sockaddr_in6))
 717                                         ? "W" : "",
 718                                 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : "");
 719                 }
 720                 printf(" %-4.4s", flgbuf);
 721
 722                 if (prbs)
 723                         printf(" %4d", prbs);
 724
 725                 printf("\n");
 726         }
 727         if (buf != NULL)
 728                 free(buf);
 729
 730         if (repeat) {
 731                 printf("\n");
 732                 sleep(repeat);
 733                 goto again;
 734         }
 735 }
 736
 737 static struct in6_nbrinfo *
 738 getnbrinfo(struct in6_addr *addr, int ifindex, int warning)
 739 {
 740         static struct in6_nbrinfo nbi;
 741         int s;
 742
 743         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
 744                 err(1, "socket");
 745
 746         bzero(&nbi, sizeof(nbi));
 747         if_indextoname(ifindex, nbi.ifname);
 748         nbi.addr = *addr;
 749         if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) {
 750                 if (warning)
 751                         warn("ioctl(SIOCGNBRINFO_IN6)");
 752                 close(s);
 753                 return(NULL);
 754         }
 755
 756         close(s);
 757         return(&nbi);
 758 }
 759
 760 static char *
 761 ether_str(struct sockaddr_dl *sdl)
 762 {
 763         static char ebuf[32];
 764         u_char *cp;
 765
 766         if (sdl->sdl_alen) {
 767                 cp = (u_char *)LLADDR(sdl);
 768                 sprintf(ebuf, "%x:%x:%x:%x:%x:%x",
 769                         cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]);
 770         } else {
 771                 sprintf(ebuf, "(incomplete)");
 772         }
 773
 774         return(ebuf);
 775 }
 776
 777 int
 778 ndp_ether_aton(char *a, u_char *n)
 779 {
 780         int i, o[6];
 781
 782         i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2],
 783                                            &o[3], &o[4], &o[5]);
 784         if (i != 6) {
 785                 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a);
 786                 return (1);
 787         }
 788         for (i=0; i<6; i++)
 789                 n[i] = o[i];
 790         return (0);
 791 }
 792
 793 void
 794 usage(void)
 795 {
 796         printf("usage: ndp hostname\n");
 797         printf("       ndp -a[nt]\n");
 798         printf("       ndp [-nt] -A wait\n");
 799         printf("       ndp -c[nt]\n");
 800         printf("       ndp -d[nt] hostname\n");
 801         printf("       ndp -f[nt] filename\n");
 802         printf("       ndp -i interface [flags...]\n");
 803 #ifdef SIOCSDEFIFACE_IN6
 804         printf("       ndp -I [interface|delete]\n");
 805 #endif
 806         printf("       ndp -p\n");
 807         printf("       ndp -r\n");
 808         printf("       ndp -s hostname ether_addr [temp] [proxy]\n");
 809         printf("       ndp -H\n");
 810         printf("       ndp -P\n");
 811         printf("       ndp -R\n");
 812         exit(1);
 813 }
 814
 815 int
 816 rtmsg(int cmd)
 817 {
 818         static int seq;
 819         int rlen;
 820         struct rt_msghdr *rtm = &m_rtmsg.m_rtm;
 821         char *cp = m_rtmsg.m_space;
 822         int l;
 823
 824         errno = 0;
 825         if (cmd == RTM_DELETE)
 826                 goto doit;
 827         bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
 828         rtm->rtm_flags = flags;
 829         rtm->rtm_version = RTM_VERSION;
 830
 831         switch (cmd) {
 832         default:
 833                 fprintf(stderr, "ndp: internal wrong cmd\n");
 834                 exit(1);
 835         case RTM_ADD:
 836                 rtm->rtm_addrs |= RTA_GATEWAY;
 837                 rtm->rtm_rmx.rmx_expire = expire_time;
 838                 rtm->rtm_inits = RTV_EXPIRE;
 839                 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC);
 840                 if (rtm->rtm_flags & RTF_ANNOUNCE) {
 841                         rtm->rtm_flags &= ~RTF_HOST;
 842                         rtm->rtm_flags |= RTA_NETMASK;
 843                 }
 844                 /* FALLTHROUGH */
 845         case RTM_GET:
 846                 rtm->rtm_addrs |= RTA_DST;
 847         }
 848 #define NEXTADDR(w, s) \
 849         if (rtm->rtm_addrs & (w)) { \
 850                 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);}
 851
 852         NEXTADDR(RTA_DST, sin_m);
 853         NEXTADDR(RTA_GATEWAY, sdl_m);
 854         memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr));
 855         NEXTADDR(RTA_NETMASK, so_mask);
 856
 857         rtm->rtm_msglen = cp - (char *)&m_rtmsg;
 858 doit:
 859         l = rtm->rtm_msglen;
 860         rtm->rtm_seq = ++seq;
 861         rtm->rtm_type = cmd;
 862         if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
 863                 if (errno != ESRCH || cmd != RTM_DELETE) {
 864                         perror("writing to routing socket");
 865                         return (-1);
 866                 }
 867         }
 868         do {
 869                 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg));
 870         } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid));
 871         if (l < 0)
 872                 fprintf(stderr, "ndp: read from routing socket: %s\n",
 873                     strerror(errno));
 874         return (0);
 875 }
 876
 877 void
 878 ifinfo(int argc, char **argv)
 879 {
 880         struct in6_ndireq nd;
 881         int i, s;
 882         char *ifname = argv[0];
 883         u_int32_t newflags;
 884 #ifdef IPV6CTL_USETEMPADDR
 885         u_int8_t nullbuf[8];
 886 #endif
 887
 888         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
 889                 perror("ndp: socket");
 890                 exit(1);
 891         }
 892         bzero(&nd, sizeof(nd));
 893         strcpy(nd.ifname, ifname);
 894         if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
 895                 perror("ioctl (SIOCGIFINFO_IN6)");
 896                 exit(1);
 897         }
 898 #define ND nd.ndi
 899         newflags = ND.flags;
 900         for (i = 1; i < argc; i++) {
 901                 int clear = 0;
 902                 char *cp = argv[i];
 903
 904                 if (*cp == '-') {
 905                         clear = 1;
 906                         cp++;
 907                 }
 908
 909 #define SETFLAG(s, f) \
 910         do {\
 911                 if (strcmp(cp, (s)) == 0) {\
 912                         if (clear)\
 913                                 newflags &= ~(f);\
 914                         else\
 915                                 newflags |= (f);\
 916                 }\
 917         } while (0)
 918                 SETFLAG("nud", ND6_IFF_PERFORMNUD);
 919 #ifdef ND6_IFF_ACCEPT_RTADV
 920                 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV);
 921 #endif
 922                 ND.flags = newflags;
 923                 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) {
 924                         perror("ioctl(SIOCSIFINFO_FLAGS)");
 925                         exit(1);
 926                 }
 927 #undef SETFLAG
 928         }
 929
 930         printf("linkmtu=%d", ND.linkmtu);
 931         printf(", curhlim=%d", ND.chlim);
 932         printf(", basereachable=%ds%dms",
 933                ND.basereachable / 1000, ND.basereachable % 1000);
 934         printf(", reachable=%ds", ND.reachable);
 935         printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000);
 936 #ifdef IPV6CTL_USETEMPADDR
 937         memset(nullbuf, 0, sizeof(nullbuf));
 938         if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) {
 939                 int j;
 940                 u_int8_t *rbuf;
 941
 942                 for (i = 0; i < 3; i++) {
 943                         switch(i) {
 944                         case 0:
 945                                 printf("\nRandom seed(0): ");
 946                                 rbuf = ND.randomseed0;
 947                                 break;
 948                         case 1:
 949                                 printf("\nRandom seed(1): ");
 950                                 rbuf = ND.randomseed1;
 951                                 break;
 952                         case 2:
 953                                 printf("\nRandom ID:      ");
 954                                 rbuf = ND.randomid;
 955                                 break;
 956                         }
 957                         for (j = 0; j < 8; j++)
 958                                 printf("%02x", rbuf[j]);
 959                 }
 960         }
 961 #endif
 962         if (ND.flags) {
 963                 printf("\nFlags: ");
 964                 if ((ND.flags & ND6_IFF_PERFORMNUD))
 965                         printf("nud ");
 966 #ifdef ND6_IFF_ACCEPT_RTADV
 967                 if ((ND.flags & ND6_IFF_ACCEPT_RTADV))
 968                         printf("accept_rtadv ");
 969 #endif
 970         }
 971         putc('\n', stdout);
 972 #undef ND
 973
 974         close(s);
 975 }
 976
 977 #ifndef ND_RA_FLAG_RTPREF_MASK  /* XXX: just for compilation on *BSD release */
 978 #define ND_RA_FLAG_RTPREF_MASK  0x18 /* 00011000 */
 979 #endif
 980
 981 void
 982 rtrlist(void)
 983 {
 984 #ifdef ICMPV6CTL_ND6_DRLIST
 985         int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST };
 986         char *buf;
 987         struct in6_defrouter *p, *ep;
 988         size_t l;
 989         struct timeval time;
 990
 991         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
 992                 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
 993                 /*NOTREACHED*/
 994         }
 995         buf = malloc(l);
 996         if (!buf) {
 997                 errx(1, "not enough core");
 998                 /*NOTREACHED*/
 999         }
1000         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1001                 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)");
1002                 /*NOTREACHED*/
1003         }
1004
1005         ep = (struct in6_defrouter *)(buf + l);
1006         for (p = (struct in6_defrouter *)buf; p < ep; p++) {
1007                 int rtpref;
1008
1009                 if (getnameinfo((struct sockaddr *)&p->rtaddr,
1010                     p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0,
1011                     NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)) != 0)
1012                         strlcpy(host_buf, "?", sizeof(host_buf));
1013
1014                 printf("%s if=%s", host_buf,
1015                        if_indextoname(p->if_index, ifix_buf));
1016                 printf(", flags=%s%s",
1017                        p->flags & ND_RA_FLAG_MANAGED ? "M" : "",
1018                        p->flags & ND_RA_FLAG_OTHER   ? "O" : "");
1019                 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff;
1020                 printf(", pref=%s", rtpref_str[rtpref]);
1021
1022                 gettimeofday(&time, 0);
1023                 if (p->expire == 0)
1024                         printf(", expire=Never\n");
1025                 else
1026                         printf(", expire=%s\n",
1027                                 sec2str(p->expire - time.tv_sec));
1028         }
1029         free(buf);
1030 #else
1031         struct in6_drlist dr;
1032         int s, i;
1033         struct timeval time;
1034
1035         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1036                 perror("ndp: socket");
1037                 exit(1);
1038         }
1039         bzero(&dr, sizeof(dr));
1040         strcpy(dr.ifname, "lo0"); /* dummy */
1041         if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) {
1042                 perror("ioctl (SIOCGDRLST_IN6)");
1043                 exit(1);
1044         }
1045 #define DR dr.defrouter[i]
1046         for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) {
1047                 struct sockaddr_in6 sin6;
1048
1049                 bzero(&sin6, sizeof(sin6));
1050                 sin6.sin6_family = AF_INET6;
1051                 sin6.sin6_len = sizeof(sin6);
1052                 sin6.sin6_addr = DR.rtaddr;
1053                 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf,
1054                             sizeof(host_buf), NULL, 0,
1055                             NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0));
1056
1057                 printf("%s if=%s", host_buf,
1058                        if_indextoname(DR.if_index, ifix_buf));
1059                 printf(", flags=%s%s",
1060                        DR.flags & ND_RA_FLAG_MANAGED ? "M" : "",
1061                        DR.flags & ND_RA_FLAG_OTHER   ? "O" : "");
1062                 gettimeofday(&time, 0);
1063                 if (DR.expire == 0)
1064                         printf(", expire=Never\n");
1065                 else
1066                         printf(", expire=%s\n",
1067                                 sec2str(DR.expire - time.tv_sec));
1068         }
1069 #undef DR
1070         close(s);
1071 #endif
1072 }
1073
1074 void
1075 plist(void)
1076 {
1077 #ifdef ICMPV6CTL_ND6_PRLIST
1078         int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST };
1079         char *buf;
1080         struct in6_prefix *p, *ep, *n;
1081         struct sockaddr_in6 *advrtr;
1082         size_t l;
1083         struct timeval time;
1084 #ifdef NI_WITHSCOPEID
1085         const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID;
1086         int ninflags = (nflag ? NI_NUMERICHOST : 0) | NI_WITHSCOPEID;
1087 #else
1088         const int niflags = NI_NUMERICHOST;
1089         int ninflags = nflag ? NI_NUMERICHOST : 0;
1090 #endif
1091         char namebuf[NI_MAXHOST];
1092
1093         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) {
1094                 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1095                 /*NOTREACHED*/
1096         }
1097         buf = malloc(l);
1098         if (!buf) {
1099                 errx(1, "not enough core");
1100                 /*NOTREACHED*/
1101         }
1102         if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) {
1103                 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)");
1104                 /*NOTREACHED*/
1105         }
1106
1107         ep = (struct in6_prefix *)(buf + l);
1108         for (p = (struct in6_prefix *)buf; p < ep; p = n) {
1109                 advrtr = (struct sockaddr_in6 *)(p + 1);
1110                 n = (struct in6_prefix *)&advrtr[p->advrtrs];
1111
1112                 if (getnameinfo((struct sockaddr *)&p->prefix,
1113                     p->prefix.sin6_len, namebuf, sizeof(namebuf),
1114                     NULL, 0, niflags) != 0)
1115                         strlcpy(namebuf, "?", sizeof(namebuf));
1116                 printf("%s/%d if=%s\n", namebuf, p->prefixlen,
1117                        if_indextoname(p->if_index, ifix_buf));
1118
1119                 gettimeofday(&time, 0);
1120                 /*
1121                  * meaning of fields, especially flags, is very different
1122                  * by origin.  notify the difference to the users.
1123                  */
1124                 printf("flags=%s%s%s%s%s",
1125                        p->raflags.onlink ? "L" : "",
1126                        p->raflags.autonomous ? "A" : "",
1127                        (p->flags & NDPRF_ONLINK) != 0 ? "O" : "",
1128                        (p->flags & NDPRF_DETACHED) != 0 ? "D" : "",
1129 #ifdef NDPRF_HOME
1130                        (p->flags & NDPRF_HOME) != 0 ? "H" : ""
1131 #else
1132                        ""
1133 #endif
1134                        );
1135                 if (p->vltime == ND6_INFINITE_LIFETIME)
1136                         printf(" vltime=infinity");
1137                 else
1138                         printf(" vltime=%ld", (long)p->vltime);
1139                 if (p->pltime == ND6_INFINITE_LIFETIME)
1140                         printf(", pltime=infinity");
1141                 else
1142                         printf(", pltime=%ld", (long)p->pltime);
1143                 if (p->expire == 0)
1144                         printf(", expire=Never");
1145                 else if (p->expire >= time.tv_sec)
1146                         printf(", expire=%s",
1147                                 sec2str(p->expire - time.tv_sec));
1148                 else
1149                         printf(", expired");
1150                 printf(", ref=%d", p->refcnt);
1151                 printf("\n");
1152                 /*
1153                  * "advertising router" list is meaningful only if the prefix
1154                  * information is from RA.
1155                  */
1156                 if (p->advrtrs) {
1157                         int j;
1158                         struct sockaddr_in6 *sin6;
1159
1160                         sin6 = (struct sockaddr_in6 *)(p + 1);
1161                         printf("  advertised by\n");
1162                         for (j = 0; j < p->advrtrs; j++) {
1163                                 struct in6_nbrinfo *nbi;
1164
1165                                 if (getnameinfo((struct sockaddr *)sin6,
1166                                     sin6->sin6_len, namebuf, sizeof(namebuf),
1167                                     NULL, 0, ninflags) != 0)
1168                                         strlcpy(namebuf, "?", sizeof(namebuf));
1169                                 printf("    %s", namebuf);
1170
1171                                 nbi = getnbrinfo(&sin6->sin6_addr, p->if_index,
1172                                                  0);
1173                                 if (nbi) {
1174                                         switch(nbi->state) {
1175                                         case ND6_LLINFO_REACHABLE:
1176                                         case ND6_LLINFO_STALE:
1177                                         case ND6_LLINFO_DELAY:
1178                                         case ND6_LLINFO_PROBE:
1179                                                 printf(" (reachable)\n");
1180                                                 break;
1181                                         default:
1182                                                 printf(" (unreachable)\n");
1183                                         }
1184                                 } else
1185                                         printf(" (no neighbor state)\n");
1186                                 sin6++;
1187                         }
1188                 } else
1189                         printf("  No advertising router\n");
1190         }
1191         free(buf);
1192 #else
1193         struct in6_prlist pr;
1194         int s, i;
1195         struct timeval time;
1196
1197         gettimeofday(&time, 0);
1198
1199         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1200                 perror("ndp: socket");
1201                 exit(1);
1202         }
1203         bzero(&pr, sizeof(pr));
1204         strcpy(pr.ifname, "lo0"); /* dummy */
1205         if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) {
1206                 perror("ioctl (SIOCGPRLST_IN6)");
1207                 exit(1);
1208         }
1209 #define PR pr.prefix[i]
1210         for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) {
1211                 struct sockaddr_in6 p6;
1212                 char namebuf[NI_MAXHOST];
1213                 int niflags;
1214
1215 #ifdef NDPRF_ONLINK
1216                 p6 = PR.prefix;
1217 #else
1218                 memset(&p6, 0, sizeof(p6));
1219                 p6.sin6_family = AF_INET6;
1220                 p6.sin6_len = sizeof(p6);
1221                 p6.sin6_addr = PR.prefix;
1222 #endif
1223
1224                 /*
1225                  * copy link index to sin6_scope_id field.
1226                  * XXX: KAME specific.
1227                  */
1228                 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) {
1229                         u_int16_t linkid;
1230
1231                         memcpy(&linkid, &p6.sin6_addr.s6_addr[2],
1232                                sizeof(linkid));
1233                         linkid = ntohs(linkid);
1234                         p6.sin6_scope_id = linkid;
1235                         p6.sin6_addr.s6_addr[2] = 0;
1236                         p6.sin6_addr.s6_addr[3] = 0;
1237                 }
1238
1239                 niflags = NI_NUMERICHOST;
1240 #ifdef __KAME__
1241                 niflags |= NI_WITHSCOPEID;
1242 #endif
1243                 if (getnameinfo((struct sockaddr *)&p6,
1244                                 sizeof(p6), namebuf, sizeof(namebuf),
1245                                 NULL, 0, niflags)) {
1246                         warnx("getnameinfo failed");
1247                         continue;
1248                 }
1249                 printf("%s/%d if=%s\n", namebuf, PR.prefixlen,
1250                        if_indextoname(PR.if_index, ifix_buf));
1251
1252                 gettimeofday(&time, 0);
1253                 /*
1254                  * meaning of fields, especially flags, is very different
1255                  * by origin.  notify the difference to the users.
1256                  */
1257 #if 0
1258                 printf("  %s",
1259                        PR.origin == PR_ORIG_RA ? "" : "advertise: ");
1260 #endif
1261 #ifdef NDPRF_ONLINK
1262                 printf("flags=%s%s%s%s%s",
1263                        PR.raflags.onlink ? "L" : "",
1264                        PR.raflags.autonomous ? "A" : "",
1265                        (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "",
1266                        (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "",
1267 #ifdef NDPRF_HOME
1268                        (PR.flags & NDPRF_HOME) != 0 ? "H" : ""
1269 #else
1270                        ""
1271 #endif
1272                        );
1273 #else
1274                 printf("flags=%s%s",
1275                        PR.raflags.onlink ? "L" : "",
1276                        PR.raflags.autonomous ? "A" : "");
1277 #endif
1278                 if (PR.vltime == ND6_INFINITE_LIFETIME)
1279                         printf(" vltime=infinity");
1280                 else
1281                         printf(" vltime=%ld", (long)PR.vltime);
1282                 if (PR.pltime == ND6_INFINITE_LIFETIME)
1283                         printf(", pltime=infinity");
1284                 else
1285                         printf(", pltime=%ld", (long)PR.pltime);
1286                 if (PR.expire == 0)
1287                         printf(", expire=Never");
1288                 else if (PR.expire >= time.tv_sec)
1289                         printf(", expire=%s",
1290                                 sec2str(PR.expire - time.tv_sec));
1291                 else
1292                         printf(", expired");
1293 #ifdef NDPRF_ONLINK
1294                 printf(", ref=%d", PR.refcnt);
1295 #endif
1296 #if 0
1297                 switch (PR.origin) {
1298                 case PR_ORIG_RA:
1299                         printf(", origin=RA");
1300                         break;
1301                 case PR_ORIG_RR:
1302                         printf(", origin=RR");
1303                         break;
1304                 case PR_ORIG_STATIC:
1305                         printf(", origin=static");
1306                         break;
1307                 case PR_ORIG_KERNEL:
1308                         printf(", origin=kernel");
1309                         break;
1310                 default:
1311                         printf(", origin=?");
1312                         break;
1313                 }
1314 #endif
1315                 printf("\n");
1316                 /*
1317                  * "advertising router" list is meaningful only if the prefix
1318                  * information is from RA.
1319                  */
1320                 if (0 &&        /* prefix origin is almost obsolted */
1321                     PR.origin != PR_ORIG_RA)
1322                         ;
1323                 else if (PR.advrtrs) {
1324                         int j;
1325                         printf("  advertised by\n");
1326                         for (j = 0; j < PR.advrtrs; j++) {
1327                                 struct sockaddr_in6 sin6;
1328                                 struct in6_nbrinfo *nbi;
1329
1330                                 bzero(&sin6, sizeof(sin6));
1331                                 sin6.sin6_family = AF_INET6;
1332                                 sin6.sin6_len = sizeof(sin6);
1333                                 sin6.sin6_addr = PR.advrtr[j];
1334                                 sin6.sin6_scope_id = PR.if_index; /* XXX */
1335                                 getnameinfo((struct sockaddr *)&sin6,
1336                                             sin6.sin6_len, host_buf,
1337                                             sizeof(host_buf), NULL, 0,
1338                                             NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0));
1339                                 printf("    %s", host_buf);
1340
1341                                 nbi = getnbrinfo(&sin6.sin6_addr, PR.if_index,
1342                                                  0);
1343                                 if (nbi) {
1344                                         switch(nbi->state) {
1345                                          case ND6_LLINFO_REACHABLE:
1346                                          case ND6_LLINFO_STALE:
1347                                          case ND6_LLINFO_DELAY:
1348                                          case ND6_LLINFO_PROBE:
1349                                                  printf(" (reachable)\n");
1350                                                  break;
1351                                          default:
1352                                                  printf(" (unreachable)\n");
1353                                         }
1354                                 } else
1355                                         printf(" (no neighbor state)\n");
1356                         }
1357                         if (PR.advrtrs > DRLSTSIZ)
1358                                 printf("    and %d routers\n",
1359                                        PR.advrtrs - DRLSTSIZ);
1360                 } else
1361                         printf("  No advertising router\n");
1362         }
1363 #undef PR
1364         close(s);
1365 #endif
1366 }
1367
1368 void
1369 pfx_flush(void)
1370 {
1371         char dummyif[IFNAMSIZ+8];
1372         int s;
1373
1374         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1375                 err(1, "socket");
1376         strcpy(dummyif, "lo0"); /* dummy */
1377         if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0)
1378                 err(1, "ioctl(SIOCSPFXFLUSH_IN6)");
1379 }
1380
1381 void
1382 rtr_flush(void)
1383 {
1384         char dummyif[IFNAMSIZ+8];
1385         int s;
1386
1387         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1388                 err(1, "socket");
1389         strcpy(dummyif, "lo0"); /* dummy */
1390         if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0)
1391                 err(1, "ioctl(SIOCSRTRFLUSH_IN6)");
1392
1393         close(s);
1394 }
1395
1396 void
1397 harmonize_rtr(void)
1398 {
1399         char dummyif[IFNAMSIZ+8];
1400         int s;
1401
1402         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1403                 err(1, "socket");
1404         strcpy(dummyif, "lo0"); /* dummy */
1405         if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0)
1406                 err(1, "ioctl (SIOCSNDFLUSH_IN6)");
1407
1408         close(s);
1409 }
1410
1411 #ifdef SIOCSDEFIFACE_IN6        /* XXX: check SIOCGDEFIFACE_IN6 as well? */
1412 static void
1413 setdefif(char *ifname)
1414 {
1415         struct in6_ndifreq ndifreq;
1416         unsigned int ifindex;
1417
1418         if (strcasecmp(ifname, "delete") == 0)
1419                 ifindex = 0;
1420         else {
1421                 if ((ifindex = if_nametoindex(ifname)) == 0)
1422                         err(1, "failed to resolve i/f index for %s", ifname);
1423         }
1424
1425         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1426                 err(1, "socket");
1427
1428         strcpy(ndifreq.ifname, "lo0"); /* dummy */
1429         ndifreq.ifindex = ifindex;
1430
1431         if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1432                 err(1, "ioctl (SIOCSDEFIFACE_IN6)");
1433
1434         close(s);
1435 }
1436
1437 static void
1438 getdefif(void)
1439 {
1440         struct in6_ndifreq ndifreq;
1441         char ifname[IFNAMSIZ+8];
1442
1443         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
1444                 err(1, "socket");
1445
1446         memset(&ndifreq, 0, sizeof(ndifreq));
1447         strcpy(ndifreq.ifname, "lo0"); /* dummy */
1448
1449         if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0)
1450                 err(1, "ioctl (SIOCGDEFIFACE_IN6)");
1451
1452         if (ndifreq.ifindex == 0)
1453                 printf("No default interface.\n");
1454         else {
1455                 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL)
1456                         err(1, "failed to resolve ifname for index %lu",
1457                             ndifreq.ifindex);
1458                 printf("ND default interface = %s\n", ifname);
1459         }
1460
1461         close(s);
1462 }
1463 #endif
1464
1465 static char *
1466 sec2str(time_t total)
1467 {
1468         static char result[256];
1469         int days, hours, mins, secs;
1470         int first = 1;
1471         char *p = result;
1472
1473         days = total / 3600 / 24;
1474         hours = (total / 3600) % 24;
1475         mins = (total / 60) % 60;
1476         secs = total % 60;
1477
1478         if (days) {
1479                 first = 0;
1480                 p += sprintf(p, "%dd", days);
1481         }
1482         if (!first || hours) {
1483                 first = 0;
1484                 p += sprintf(p, "%dh", hours);
1485         }
1486         if (!first || mins) {
1487                 first = 0;
1488                 p += sprintf(p, "%dm", mins);
1489         }
1490         sprintf(p, "%ds", secs);
1491
1492         return(result);
1493 }
1494
1495 /*
1496  * Print the timestamp
1497  * from tcpdump/util.c
1498  */
1499 static void
1500 ts_print(const struct timespec *sp)
1501 {
1502         int s;
1503
1504         /* Default */
1505         s = (sp->tv_sec + thiszone) % 86400;
1506         printf("%02d:%02d:%02d.%06u ",
1507             s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)(sp->tv_nsec / 1000));
1508 }