| 1 | /* $FreeBSD: src/usr.sbin/ndp/ndp.c,v 1.2.2.5 2001/08/13 02:58:26 sumikawa 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. All advertising materials mentioning features or use of this software |
| 48 | * must display the following acknowledgement: |
| 49 | * This product includes software developed by the University of |
| 50 | * California, Berkeley and its contributors. |
| 51 | * 4. Neither the name of the University nor the names of its contributors |
| 52 | * may be used to endorse or promote products derived from this software |
| 53 | * without specific prior written permission. |
| 54 | * |
| 55 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 56 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 57 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 58 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 59 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 60 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 61 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 62 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 63 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 64 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 65 | * SUCH DAMAGE. |
| 66 | */ |
| 67 | |
| 68 | /* |
| 69 | * Based on: |
| 70 | * "@(#) Copyright (c) 1984, 1993\n\ |
| 71 | * The Regents of the University of California. All rights reserved.\n"; |
| 72 | * |
| 73 | * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; |
| 74 | */ |
| 75 | |
| 76 | /* |
| 77 | * ndp - display, set, delete and flush neighbor cache |
| 78 | */ |
| 79 | |
| 80 | |
| 81 | #include <sys/param.h> |
| 82 | #include <sys/file.h> |
| 83 | #include <sys/ioctl.h> |
| 84 | #include <sys/socket.h> |
| 85 | #include <sys/sysctl.h> |
| 86 | #include <sys/time.h> |
| 87 | #include <sys/queue.h> |
| 88 | |
| 89 | #include <net/if.h> |
| 90 | #include <net/if_var.h> |
| 91 | #include <net/if_dl.h> |
| 92 | #include <net/if_types.h> |
| 93 | #include <net/route.h> |
| 94 | |
| 95 | #include <netinet/in.h> |
| 96 | #include <netinet/if_ether.h> |
| 97 | |
| 98 | #include <netinet/icmp6.h> |
| 99 | #include <netinet6/in6_var.h> |
| 100 | #include <netinet6/nd6.h> |
| 101 | |
| 102 | #include <arpa/inet.h> |
| 103 | |
| 104 | #include <netdb.h> |
| 105 | #include <errno.h> |
| 106 | #include <nlist.h> |
| 107 | #include <stdio.h> |
| 108 | #include <string.h> |
| 109 | #include <paths.h> |
| 110 | #include <err.h> |
| 111 | #include <stdlib.h> |
| 112 | #include <fcntl.h> |
| 113 | #include <unistd.h> |
| 114 | #include "gmt2local.h" |
| 115 | |
| 116 | #ifndef NI_WITHSCOPEID |
| 117 | #define NI_WITHSCOPEID 0 |
| 118 | #endif |
| 119 | |
| 120 | /* packing rule for routing socket */ |
| 121 | #define ROUNDUP(a) \ |
| 122 | ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) |
| 123 | #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) |
| 124 | |
| 125 | static int pid; |
| 126 | static int cflag; |
| 127 | static int nflag; |
| 128 | static int tflag; |
| 129 | static int32_t thiszone; /* time difference with gmt */ |
| 130 | static int s = -1; |
| 131 | static int repeat = 0; |
| 132 | |
| 133 | char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ |
| 134 | char host_buf[NI_MAXHOST]; /* getnameinfo() */ |
| 135 | char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ |
| 136 | |
| 137 | int main __P((int, char **)); |
| 138 | int file __P((char *)); |
| 139 | void getsocket __P((void)); |
| 140 | int set __P((int, char **)); |
| 141 | void get __P((char *)); |
| 142 | int delete __P((char *)); |
| 143 | void dump __P((struct in6_addr *)); |
| 144 | static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *addr, |
| 145 | int ifindex, int)); |
| 146 | static char *ether_str __P((struct sockaddr_dl *)); |
| 147 | int ndp_ether_aton __P((char *, u_char *)); |
| 148 | void usage __P((void)); |
| 149 | int rtmsg __P((int)); |
| 150 | void ifinfo __P((int, char **)); |
| 151 | void rtrlist __P((void)); |
| 152 | void plist __P((void)); |
| 153 | void pfx_flush __P((void)); |
| 154 | void rtrlist __P((void)); |
| 155 | void rtr_flush __P((void)); |
| 156 | void harmonize_rtr __P((void)); |
| 157 | #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ |
| 158 | static void getdefif __P((void)); |
| 159 | static void setdefif __P((char *)); |
| 160 | #endif |
| 161 | static char *sec2str __P((time_t t)); |
| 162 | static char *ether_str __P((struct sockaddr_dl *sdl)); |
| 163 | static void ts_print __P((const struct timeval *)); |
| 164 | |
| 165 | static char *rtpref_str[] = { |
| 166 | "medium", /* 00 */ |
| 167 | "high", /* 01 */ |
| 168 | "rsv", /* 10 */ |
| 169 | "low" /* 11 */ |
| 170 | }; |
| 171 | |
| 172 | int |
| 173 | main(argc, argv) |
| 174 | int argc; |
| 175 | char **argv; |
| 176 | { |
| 177 | int ch; |
| 178 | int aflag = 0, dflag = 0, sflag = 0, Hflag = 0, |
| 179 | pflag = 0, rflag = 0, Pflag = 0, Rflag = 0; |
| 180 | |
| 181 | pid = getpid(); |
| 182 | thiszone = gmt2local(0); |
| 183 | while ((ch = getopt(argc, argv, "acndfIilprstA:HPR")) != -1) |
| 184 | switch ((char)ch) { |
| 185 | case 'a': |
| 186 | aflag = 1; |
| 187 | break; |
| 188 | case 'c': |
| 189 | cflag = 1; |
| 190 | break; |
| 191 | case 'd': |
| 192 | dflag = 1; |
| 193 | break; |
| 194 | case 'I': |
| 195 | #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ |
| 196 | if (argc > 2) |
| 197 | setdefif(argv[2]); |
| 198 | getdefif(); /* always call it to print the result */ |
| 199 | exit(0); |
| 200 | #else |
| 201 | errx(1, "not supported yet"); |
| 202 | /*NOTREACHED*/ |
| 203 | #endif |
| 204 | case 'i' : |
| 205 | argc -= optind; |
| 206 | argv += optind; |
| 207 | if (argc < 1) |
| 208 | usage(); |
| 209 | ifinfo(argc, argv); |
| 210 | exit(0); |
| 211 | case 'n': |
| 212 | nflag = 1; |
| 213 | continue; |
| 214 | case 'p': |
| 215 | pflag = 1; |
| 216 | break; |
| 217 | case 'f' : |
| 218 | if (argc != 3) |
| 219 | usage(); |
| 220 | file(argv[2]); |
| 221 | exit(0); |
| 222 | case 'l' : |
| 223 | /* obsolete, ignored */ |
| 224 | break; |
| 225 | case 'r' : |
| 226 | rflag = 1; |
| 227 | break; |
| 228 | case 's': |
| 229 | sflag = 1; |
| 230 | break; |
| 231 | case 't': |
| 232 | tflag = 1; |
| 233 | break; |
| 234 | case 'A': |
| 235 | aflag = 1; |
| 236 | repeat = atoi(optarg); |
| 237 | if (repeat < 0) |
| 238 | usage(); |
| 239 | break; |
| 240 | case 'H' : |
| 241 | Hflag = 1; |
| 242 | break; |
| 243 | case 'P': |
| 244 | Pflag = 1; |
| 245 | break; |
| 246 | case 'R': |
| 247 | Rflag = 1; |
| 248 | break; |
| 249 | default: |
| 250 | usage(); |
| 251 | } |
| 252 | |
| 253 | argc -= optind; |
| 254 | argv += optind; |
| 255 | |
| 256 | if (aflag || cflag) { |
| 257 | dump(0); |
| 258 | exit(0); |
| 259 | } |
| 260 | if (dflag) { |
| 261 | if (argc != 1) |
| 262 | usage(); |
| 263 | delete(argv[0]); |
| 264 | exit(0); |
| 265 | } |
| 266 | if (pflag) { |
| 267 | plist(); |
| 268 | exit(0); |
| 269 | } |
| 270 | if (rflag) { |
| 271 | rtrlist(); |
| 272 | exit(0); |
| 273 | } |
| 274 | if (sflag) { |
| 275 | if (argc < 2 || argc > 4) |
| 276 | usage(); |
| 277 | exit(set(argc, argv) ? 1 : 0); |
| 278 | } |
| 279 | if (Hflag) { |
| 280 | harmonize_rtr(); |
| 281 | exit(0); |
| 282 | } |
| 283 | if (Pflag) { |
| 284 | pfx_flush(); |
| 285 | exit(0); |
| 286 | } |
| 287 | if (Rflag) { |
| 288 | rtr_flush(); |
| 289 | exit(0); |
| 290 | } |
| 291 | |
| 292 | if (argc != 1) |
| 293 | usage(); |
| 294 | get(argv[0]); |
| 295 | exit(0); |
| 296 | } |
| 297 | |
| 298 | /* |
| 299 | * Process a file to set standard ndp entries |
| 300 | */ |
| 301 | int |
| 302 | file(name) |
| 303 | char *name; |
| 304 | { |
| 305 | FILE *fp; |
| 306 | int i, retval; |
| 307 | char line[100], arg[5][50], *args[5]; |
| 308 | |
| 309 | if ((fp = fopen(name, "r")) == NULL) { |
| 310 | fprintf(stderr, "ndp: cannot open %s\n", name); |
| 311 | exit(1); |
| 312 | } |
| 313 | args[0] = &arg[0][0]; |
| 314 | args[1] = &arg[1][0]; |
| 315 | args[2] = &arg[2][0]; |
| 316 | args[3] = &arg[3][0]; |
| 317 | args[4] = &arg[4][0]; |
| 318 | retval = 0; |
| 319 | while(fgets(line, 100, fp) != NULL) { |
| 320 | i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2], |
| 321 | arg[3], arg[4]); |
| 322 | if (i < 2) { |
| 323 | fprintf(stderr, "ndp: bad line: %s\n", line); |
| 324 | retval = 1; |
| 325 | continue; |
| 326 | } |
| 327 | if (set(i, args)) |
| 328 | retval = 1; |
| 329 | } |
| 330 | fclose(fp); |
| 331 | return (retval); |
| 332 | } |
| 333 | |
| 334 | void |
| 335 | getsocket() |
| 336 | { |
| 337 | if (s < 0) { |
| 338 | s = socket(PF_ROUTE, SOCK_RAW, 0); |
| 339 | if (s < 0) { |
| 340 | perror("ndp: socket"); |
| 341 | exit(1); |
| 342 | } |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; |
| 347 | struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; |
| 348 | struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; |
| 349 | int expire_time, flags, found_entry; |
| 350 | struct { |
| 351 | struct rt_msghdr m_rtm; |
| 352 | char m_space[512]; |
| 353 | } m_rtmsg; |
| 354 | |
| 355 | /* |
| 356 | * Set an individual neighbor cache entry |
| 357 | */ |
| 358 | int |
| 359 | set(argc, argv) |
| 360 | int argc; |
| 361 | char **argv; |
| 362 | { |
| 363 | register struct sockaddr_in6 *sin = &sin_m; |
| 364 | register struct sockaddr_dl *sdl; |
| 365 | register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); |
| 366 | struct addrinfo hints, *res; |
| 367 | int gai_error; |
| 368 | u_char *ea; |
| 369 | char *host = argv[0], *eaddr = argv[1]; |
| 370 | |
| 371 | getsocket(); |
| 372 | argc -= 2; |
| 373 | argv += 2; |
| 374 | sdl_m = blank_sdl; |
| 375 | sin_m = blank_sin; |
| 376 | |
| 377 | bzero(&hints, sizeof(hints)); |
| 378 | hints.ai_family = AF_INET6; |
| 379 | gai_error = getaddrinfo(host, NULL, &hints, &res); |
| 380 | if (gai_error) { |
| 381 | fprintf(stderr, "ndp: %s: %s\n", host, |
| 382 | gai_strerror(gai_error)); |
| 383 | return 1; |
| 384 | } |
| 385 | sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; |
| 386 | #ifdef __KAME__ |
| 387 | if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { |
| 388 | *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = |
| 389 | htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); |
| 390 | } |
| 391 | #endif |
| 392 | ea = (u_char *)LLADDR(&sdl_m); |
| 393 | if (ndp_ether_aton(eaddr, ea) == 0) |
| 394 | sdl_m.sdl_alen = 6; |
| 395 | flags = expire_time = 0; |
| 396 | while (argc-- > 0) { |
| 397 | if (strncmp(argv[0], "temp", 4) == 0) { |
| 398 | struct timeval time; |
| 399 | gettimeofday(&time, 0); |
| 400 | expire_time = time.tv_sec + 20 * 60; |
| 401 | } else if (strncmp(argv[0], "proxy", 5) == 0) |
| 402 | flags |= RTF_ANNOUNCE; |
| 403 | argv++; |
| 404 | } |
| 405 | if (rtmsg(RTM_GET) < 0) { |
| 406 | perror(host); |
| 407 | return (1); |
| 408 | } |
| 409 | sin = (struct sockaddr_in6 *)(rtm + 1); |
| 410 | sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); |
| 411 | if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { |
| 412 | if (sdl->sdl_family == AF_LINK && |
| 413 | (rtm->rtm_flags & RTF_LLINFO) && |
| 414 | !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) { |
| 415 | case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: |
| 416 | case IFT_ISO88024: case IFT_ISO88025: |
| 417 | goto overwrite; |
| 418 | } |
| 419 | /* |
| 420 | * IPv4 arp command retries with sin_other = SIN_PROXY here. |
| 421 | */ |
| 422 | fprintf(stderr, "set: cannot configure a new entry\n"); |
| 423 | return 1; |
| 424 | } |
| 425 | |
| 426 | overwrite: |
| 427 | if (sdl->sdl_family != AF_LINK) { |
| 428 | printf("cannot intuit interface index and type for %s\n", host); |
| 429 | return (1); |
| 430 | } |
| 431 | sdl_m.sdl_type = sdl->sdl_type; |
| 432 | sdl_m.sdl_index = sdl->sdl_index; |
| 433 | return (rtmsg(RTM_ADD)); |
| 434 | } |
| 435 | |
| 436 | /* |
| 437 | * Display an individual neighbor cache entry |
| 438 | */ |
| 439 | void |
| 440 | get(host) |
| 441 | char *host; |
| 442 | { |
| 443 | struct sockaddr_in6 *sin = &sin_m; |
| 444 | struct addrinfo hints, *res; |
| 445 | int gai_error; |
| 446 | |
| 447 | sin_m = blank_sin; |
| 448 | bzero(&hints, sizeof(hints)); |
| 449 | hints.ai_family = AF_INET6; |
| 450 | gai_error = getaddrinfo(host, NULL, &hints, &res); |
| 451 | if (gai_error) { |
| 452 | fprintf(stderr, "ndp: %s: %s\n", host, |
| 453 | gai_strerror(gai_error)); |
| 454 | return; |
| 455 | } |
| 456 | sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; |
| 457 | #ifdef __KAME__ |
| 458 | if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { |
| 459 | *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = |
| 460 | htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); |
| 461 | } |
| 462 | #endif |
| 463 | dump(&sin->sin6_addr); |
| 464 | if (found_entry == 0) { |
| 465 | getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, |
| 466 | sizeof(host_buf), NULL ,0, |
| 467 | NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); |
| 468 | printf("%s (%s) -- no entry\n", host, host_buf); |
| 469 | exit(1); |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | /* |
| 474 | * Delete a neighbor cache entry |
| 475 | */ |
| 476 | int |
| 477 | delete(host) |
| 478 | char *host; |
| 479 | { |
| 480 | struct sockaddr_in6 *sin = &sin_m; |
| 481 | register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; |
| 482 | struct sockaddr_dl *sdl; |
| 483 | struct addrinfo hints, *res; |
| 484 | int gai_error; |
| 485 | |
| 486 | getsocket(); |
| 487 | sin_m = blank_sin; |
| 488 | |
| 489 | bzero(&hints, sizeof(hints)); |
| 490 | hints.ai_family = AF_INET6; |
| 491 | gai_error = getaddrinfo(host, NULL, &hints, &res); |
| 492 | if (gai_error) { |
| 493 | fprintf(stderr, "ndp: %s: %s\n", host, |
| 494 | gai_strerror(gai_error)); |
| 495 | return 1; |
| 496 | } |
| 497 | sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; |
| 498 | #ifdef __KAME__ |
| 499 | if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { |
| 500 | *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = |
| 501 | htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); |
| 502 | } |
| 503 | #endif |
| 504 | if (rtmsg(RTM_GET) < 0) { |
| 505 | perror(host); |
| 506 | return (1); |
| 507 | } |
| 508 | sin = (struct sockaddr_in6 *)(rtm + 1); |
| 509 | sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); |
| 510 | if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { |
| 511 | if (sdl->sdl_family == AF_LINK && |
| 512 | (rtm->rtm_flags & RTF_LLINFO) && |
| 513 | !(rtm->rtm_flags & RTF_GATEWAY)) { |
| 514 | goto delete; |
| 515 | } |
| 516 | /* |
| 517 | * IPv4 arp command retries with sin_other = SIN_PROXY here. |
| 518 | */ |
| 519 | fprintf(stderr, "delete: cannot delete non-NDP entry\n"); |
| 520 | return 1; |
| 521 | } |
| 522 | |
| 523 | delete: |
| 524 | if (sdl->sdl_family != AF_LINK) { |
| 525 | printf("cannot locate %s\n", host); |
| 526 | return (1); |
| 527 | } |
| 528 | if (rtmsg(RTM_DELETE) == 0) { |
| 529 | struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ |
| 530 | |
| 531 | #ifdef __KAME__ |
| 532 | if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { |
| 533 | s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); |
| 534 | *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; |
| 535 | } |
| 536 | #endif |
| 537 | getnameinfo((struct sockaddr *)&s6, |
| 538 | s6.sin6_len, host_buf, |
| 539 | sizeof(host_buf), NULL, 0, |
| 540 | NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); |
| 541 | printf("%s (%s) deleted\n", host, host_buf); |
| 542 | } |
| 543 | |
| 544 | return 0; |
| 545 | } |
| 546 | |
| 547 | #define W_ADDR 31 |
| 548 | #define W_LL 17 |
| 549 | #define W_IF 6 |
| 550 | |
| 551 | /* |
| 552 | * Dump the entire neighbor cache |
| 553 | */ |
| 554 | void |
| 555 | dump(addr) |
| 556 | struct in6_addr *addr; |
| 557 | { |
| 558 | int mib[6]; |
| 559 | size_t needed; |
| 560 | char *lim, *buf, *next; |
| 561 | struct rt_msghdr *rtm; |
| 562 | struct sockaddr_in6 *sin; |
| 563 | struct sockaddr_dl *sdl; |
| 564 | extern int h_errno; |
| 565 | struct in6_nbrinfo *nbi; |
| 566 | struct timeval time; |
| 567 | int addrwidth; |
| 568 | int llwidth; |
| 569 | int ifwidth; |
| 570 | char flgbuf[8]; |
| 571 | char *ifname; |
| 572 | |
| 573 | /* Print header */ |
| 574 | if (!tflag && !cflag) |
| 575 | printf("%-*.*s %-*.*s %*.*s %-9.9s %2s %4s %4s\n", |
| 576 | W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", |
| 577 | W_IF, W_IF, "Netif", "Expire", "St", "Flgs", "Prbs"); |
| 578 | |
| 579 | again:; |
| 580 | mib[0] = CTL_NET; |
| 581 | mib[1] = PF_ROUTE; |
| 582 | mib[2] = 0; |
| 583 | mib[3] = AF_INET6; |
| 584 | mib[4] = NET_RT_FLAGS; |
| 585 | mib[5] = RTF_LLINFO; |
| 586 | if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) |
| 587 | err(1, "sysctl(PF_ROUTE estimate)"); |
| 588 | if (needed > 0) { |
| 589 | if ((buf = malloc(needed)) == NULL) |
| 590 | errx(1, "malloc"); |
| 591 | if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) |
| 592 | err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); |
| 593 | lim = buf + needed; |
| 594 | } else |
| 595 | buf = lim = NULL; |
| 596 | |
| 597 | for (next = buf; next && next < lim; next += rtm->rtm_msglen) { |
| 598 | int isrouter = 0, prbs = 0; |
| 599 | |
| 600 | rtm = (struct rt_msghdr *)next; |
| 601 | sin = (struct sockaddr_in6 *)(rtm + 1); |
| 602 | sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); |
| 603 | |
| 604 | /* |
| 605 | * Some OSes can produce a route that has the LINK flag but |
| 606 | * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD |
| 607 | * and BSD/OS, where xx is not the interface identifier on |
| 608 | * lo0). Such routes entry would annoy getnbrinfo() below, |
| 609 | * so we skip them. |
| 610 | * XXX: such routes should have the GATEWAY flag, not the |
| 611 | * LINK flag. However, there are rotten routing software |
| 612 | * that advertises all routes that have the GATEWAY flag. |
| 613 | * Thus, KAME kernel intentionally does not set the LINK flag. |
| 614 | * What is to be fixed is not ndp, but such routing software |
| 615 | * (and the kernel workaround)... |
| 616 | */ |
| 617 | if (sdl->sdl_family != AF_LINK) |
| 618 | continue; |
| 619 | |
| 620 | if (addr) { |
| 621 | if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) |
| 622 | continue; |
| 623 | found_entry = 1; |
| 624 | } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) |
| 625 | continue; |
| 626 | if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || |
| 627 | IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { |
| 628 | /* XXX: should scope id be filled in the kernel? */ |
| 629 | if (sin->sin6_scope_id == 0) |
| 630 | sin->sin6_scope_id = sdl->sdl_index; |
| 631 | #ifdef __KAME__ |
| 632 | /* KAME specific hack; removed the embedded id */ |
| 633 | *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; |
| 634 | #endif |
| 635 | } |
| 636 | getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, |
| 637 | sizeof(host_buf), NULL, 0, |
| 638 | NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); |
| 639 | if (cflag == 1) { |
| 640 | #ifdef RTF_WASCLONED |
| 641 | if (rtm->rtm_flags & RTF_WASCLONED) |
| 642 | delete(host_buf); |
| 643 | #else |
| 644 | delete(host_buf); |
| 645 | #endif |
| 646 | continue; |
| 647 | } |
| 648 | gettimeofday(&time, 0); |
| 649 | if (tflag) |
| 650 | ts_print(&time); |
| 651 | |
| 652 | addrwidth = strlen(host_buf); |
| 653 | if (addrwidth < W_ADDR) |
| 654 | addrwidth = W_ADDR; |
| 655 | llwidth = strlen(ether_str(sdl)); |
| 656 | if (W_ADDR + W_LL - addrwidth > llwidth) |
| 657 | llwidth = W_ADDR + W_LL - addrwidth; |
| 658 | ifname = if_indextoname(sdl->sdl_index, ifix_buf); |
| 659 | if (!ifname) |
| 660 | ifname = "?"; |
| 661 | ifwidth = strlen(ifname); |
| 662 | if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) |
| 663 | ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; |
| 664 | |
| 665 | printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, |
| 666 | llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); |
| 667 | |
| 668 | /* Print neighbor discovery specific informations */ |
| 669 | nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); |
| 670 | if (nbi) { |
| 671 | if (nbi->expire > time.tv_sec) { |
| 672 | printf(" %-9.9s", |
| 673 | sec2str(nbi->expire - time.tv_sec)); |
| 674 | } else if (nbi->expire == 0) |
| 675 | printf(" %-9.9s", "permanent"); |
| 676 | else |
| 677 | printf(" %-9.9s", "expired"); |
| 678 | |
| 679 | switch(nbi->state) { |
| 680 | case ND6_LLINFO_NOSTATE: |
| 681 | printf(" N"); |
| 682 | break; |
| 683 | #ifdef ND6_LLINFO_WAITDELETE |
| 684 | case ND6_LLINFO_WAITDELETE: |
| 685 | printf(" W"); |
| 686 | break; |
| 687 | #endif |
| 688 | case ND6_LLINFO_INCOMPLETE: |
| 689 | printf(" I"); |
| 690 | break; |
| 691 | case ND6_LLINFO_REACHABLE: |
| 692 | printf(" R"); |
| 693 | break; |
| 694 | case ND6_LLINFO_STALE: |
| 695 | printf(" S"); |
| 696 | break; |
| 697 | case ND6_LLINFO_DELAY: |
| 698 | printf(" D"); |
| 699 | break; |
| 700 | case ND6_LLINFO_PROBE: |
| 701 | printf(" P"); |
| 702 | break; |
| 703 | default: |
| 704 | printf(" ?"); |
| 705 | break; |
| 706 | } |
| 707 | |
| 708 | isrouter = nbi->isrouter; |
| 709 | prbs = nbi->asked; |
| 710 | } else { |
| 711 | warnx("failed to get neighbor information"); |
| 712 | printf(" "); |
| 713 | } |
| 714 | putchar(' '); |
| 715 | |
| 716 | /* |
| 717 | * other flags. R: router, P: proxy, W: ?? |
| 718 | */ |
| 719 | if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { |
| 720 | snprintf(flgbuf, sizeof(flgbuf), "%s%s", |
| 721 | isrouter ? "R" : "", |
| 722 | (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); |
| 723 | } else { |
| 724 | sin = (struct sockaddr_in6 *) |
| 725 | (sdl->sdl_len + (char *)sdl); |
| 726 | snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", |
| 727 | isrouter ? "R" : "", |
| 728 | !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) |
| 729 | ? "P" : "", |
| 730 | (sin->sin6_len != sizeof(struct sockaddr_in6)) |
| 731 | ? "W" : "", |
| 732 | (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); |
| 733 | } |
| 734 | printf(" %-4.4s", flgbuf); |
| 735 | |
| 736 | if (prbs) |
| 737 | printf(" %4d", prbs); |
| 738 | |
| 739 | printf("\n"); |
| 740 | } |
| 741 | if (buf != NULL) |
| 742 | free(buf); |
| 743 | |
| 744 | if (repeat) { |
| 745 | printf("\n"); |
| 746 | sleep(repeat); |
| 747 | goto again; |
| 748 | } |
| 749 | } |
| 750 | |
| 751 | static struct in6_nbrinfo * |
| 752 | getnbrinfo(addr, ifindex, warning) |
| 753 | struct in6_addr *addr; |
| 754 | int ifindex; |
| 755 | int warning; |
| 756 | { |
| 757 | static struct in6_nbrinfo nbi; |
| 758 | int s; |
| 759 | |
| 760 | if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) |
| 761 | err(1, "socket"); |
| 762 | |
| 763 | bzero(&nbi, sizeof(nbi)); |
| 764 | if_indextoname(ifindex, nbi.ifname); |
| 765 | nbi.addr = *addr; |
| 766 | if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { |
| 767 | if (warning) |
| 768 | warn("ioctl(SIOCGNBRINFO_IN6)"); |
| 769 | close(s); |
| 770 | return(NULL); |
| 771 | } |
| 772 | |
| 773 | close(s); |
| 774 | return(&nbi); |
| 775 | } |
| 776 | |
| 777 | static char * |
| 778 | ether_str(sdl) |
| 779 | struct sockaddr_dl *sdl; |
| 780 | { |
| 781 | static char ebuf[32]; |
| 782 | u_char *cp; |
| 783 | |
| 784 | if (sdl->sdl_alen) { |
| 785 | cp = (u_char *)LLADDR(sdl); |
| 786 | sprintf(ebuf, "%x:%x:%x:%x:%x:%x", |
| 787 | cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); |
| 788 | } else { |
| 789 | sprintf(ebuf, "(incomplete)"); |
| 790 | } |
| 791 | |
| 792 | return(ebuf); |
| 793 | } |
| 794 | |
| 795 | int |
| 796 | ndp_ether_aton(a, n) |
| 797 | char *a; |
| 798 | u_char *n; |
| 799 | { |
| 800 | int i, o[6]; |
| 801 | |
| 802 | i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], |
| 803 | &o[3], &o[4], &o[5]); |
| 804 | if (i != 6) { |
| 805 | fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); |
| 806 | return (1); |
| 807 | } |
| 808 | for (i=0; i<6; i++) |
| 809 | n[i] = o[i]; |
| 810 | return (0); |
| 811 | } |
| 812 | |
| 813 | void |
| 814 | usage() |
| 815 | { |
| 816 | printf("usage: ndp hostname\n"); |
| 817 | printf(" ndp -a[nt]\n"); |
| 818 | printf(" ndp [-nt] -A wait\n"); |
| 819 | printf(" ndp -c[nt]\n"); |
| 820 | printf(" ndp -d[nt] hostname\n"); |
| 821 | printf(" ndp -f[nt] filename\n"); |
| 822 | printf(" ndp -i interface [flags...]\n"); |
| 823 | #ifdef SIOCSDEFIFACE_IN6 |
| 824 | printf(" ndp -I [interface|delete]\n"); |
| 825 | #endif |
| 826 | printf(" ndp -p\n"); |
| 827 | printf(" ndp -r\n"); |
| 828 | printf(" ndp -s hostname ether_addr [temp] [proxy]\n"); |
| 829 | printf(" ndp -H\n"); |
| 830 | printf(" ndp -P\n"); |
| 831 | printf(" ndp -R\n"); |
| 832 | exit(1); |
| 833 | } |
| 834 | |
| 835 | int |
| 836 | rtmsg(cmd) |
| 837 | int cmd; |
| 838 | { |
| 839 | static int seq; |
| 840 | int rlen; |
| 841 | register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; |
| 842 | register char *cp = m_rtmsg.m_space; |
| 843 | register int l; |
| 844 | |
| 845 | errno = 0; |
| 846 | if (cmd == RTM_DELETE) |
| 847 | goto doit; |
| 848 | bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); |
| 849 | rtm->rtm_flags = flags; |
| 850 | rtm->rtm_version = RTM_VERSION; |
| 851 | |
| 852 | switch (cmd) { |
| 853 | default: |
| 854 | fprintf(stderr, "ndp: internal wrong cmd\n"); |
| 855 | exit(1); |
| 856 | case RTM_ADD: |
| 857 | rtm->rtm_addrs |= RTA_GATEWAY; |
| 858 | rtm->rtm_rmx.rmx_expire = expire_time; |
| 859 | rtm->rtm_inits = RTV_EXPIRE; |
| 860 | rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); |
| 861 | if (rtm->rtm_flags & RTF_ANNOUNCE) { |
| 862 | rtm->rtm_flags &= ~RTF_HOST; |
| 863 | rtm->rtm_flags |= RTA_NETMASK; |
| 864 | } |
| 865 | /* FALLTHROUGH */ |
| 866 | case RTM_GET: |
| 867 | rtm->rtm_addrs |= RTA_DST; |
| 868 | } |
| 869 | #define NEXTADDR(w, s) \ |
| 870 | if (rtm->rtm_addrs & (w)) { \ |
| 871 | bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} |
| 872 | |
| 873 | NEXTADDR(RTA_DST, sin_m); |
| 874 | NEXTADDR(RTA_GATEWAY, sdl_m); |
| 875 | memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); |
| 876 | NEXTADDR(RTA_NETMASK, so_mask); |
| 877 | |
| 878 | rtm->rtm_msglen = cp - (char *)&m_rtmsg; |
| 879 | doit: |
| 880 | l = rtm->rtm_msglen; |
| 881 | rtm->rtm_seq = ++seq; |
| 882 | rtm->rtm_type = cmd; |
| 883 | if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { |
| 884 | if (errno != ESRCH || cmd != RTM_DELETE) { |
| 885 | perror("writing to routing socket"); |
| 886 | return (-1); |
| 887 | } |
| 888 | } |
| 889 | do { |
| 890 | l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); |
| 891 | } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); |
| 892 | if (l < 0) |
| 893 | (void) fprintf(stderr, "ndp: read from routing socket: %s\n", |
| 894 | strerror(errno)); |
| 895 | return (0); |
| 896 | } |
| 897 | |
| 898 | void |
| 899 | ifinfo(argc, argv) |
| 900 | int argc; |
| 901 | char **argv; |
| 902 | { |
| 903 | struct in6_ndireq nd; |
| 904 | int i, s; |
| 905 | char *ifname = argv[0]; |
| 906 | u_int32_t newflags; |
| 907 | #ifdef IPV6CTL_USETEMPADDR |
| 908 | u_int8_t nullbuf[8]; |
| 909 | #endif |
| 910 | |
| 911 | if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { |
| 912 | perror("ndp: socket"); |
| 913 | exit(1); |
| 914 | } |
| 915 | bzero(&nd, sizeof(nd)); |
| 916 | strcpy(nd.ifname, ifname); |
| 917 | if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { |
| 918 | perror("ioctl (SIOCGIFINFO_IN6)"); |
| 919 | exit(1); |
| 920 | } |
| 921 | #define ND nd.ndi |
| 922 | newflags = ND.flags; |
| 923 | for (i = 1; i < argc; i++) { |
| 924 | int clear = 0; |
| 925 | char *cp = argv[i]; |
| 926 | |
| 927 | if (*cp == '-') { |
| 928 | clear = 1; |
| 929 | cp++; |
| 930 | } |
| 931 | |
| 932 | #define SETFLAG(s, f) \ |
| 933 | do {\ |
| 934 | if (strcmp(cp, (s)) == 0) {\ |
| 935 | if (clear)\ |
| 936 | newflags &= ~(f);\ |
| 937 | else\ |
| 938 | newflags |= (f);\ |
| 939 | }\ |
| 940 | } while (0) |
| 941 | SETFLAG("nud", ND6_IFF_PERFORMNUD); |
| 942 | |
| 943 | ND.flags = newflags; |
| 944 | if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { |
| 945 | perror("ioctl(SIOCSIFINFO_FLAGS)"); |
| 946 | exit(1); |
| 947 | } |
| 948 | #undef SETFLAG |
| 949 | } |
| 950 | |
| 951 | printf("linkmtu=%d", ND.linkmtu); |
| 952 | printf(", curhlim=%d", ND.chlim); |
| 953 | printf(", basereachable=%ds%dms", |
| 954 | ND.basereachable / 1000, ND.basereachable % 1000); |
| 955 | printf(", reachable=%ds", ND.reachable); |
| 956 | printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); |
| 957 | #ifdef IPV6CTL_USETEMPADDR |
| 958 | memset(nullbuf, 0, sizeof(nullbuf)); |
| 959 | if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { |
| 960 | int j; |
| 961 | u_int8_t *rbuf; |
| 962 | |
| 963 | for (i = 0; i < 3; i++) { |
| 964 | switch(i) { |
| 965 | case 0: |
| 966 | printf("\nRandom seed(0): "); |
| 967 | rbuf = ND.randomseed0; |
| 968 | break; |
| 969 | case 1: |
| 970 | printf("\nRandom seed(1): "); |
| 971 | rbuf = ND.randomseed1; |
| 972 | break; |
| 973 | case 2: |
| 974 | printf("\nRandom ID: "); |
| 975 | rbuf = ND.randomid; |
| 976 | break; |
| 977 | } |
| 978 | for (j = 0; j < 8; j++) |
| 979 | printf("%02x", rbuf[j]); |
| 980 | } |
| 981 | } |
| 982 | #endif |
| 983 | if (ND.flags) { |
| 984 | printf("\nFlags: "); |
| 985 | if ((ND.flags & ND6_IFF_PERFORMNUD) != 0) |
| 986 | printf("PERFORMNUD "); |
| 987 | } |
| 988 | putc('\n', stdout); |
| 989 | #undef ND |
| 990 | |
| 991 | close(s); |
| 992 | } |
| 993 | |
| 994 | #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ |
| 995 | #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ |
| 996 | #endif |
| 997 | |
| 998 | void |
| 999 | rtrlist() |
| 1000 | { |
| 1001 | #ifdef ICMPV6CTL_ND6_DRLIST |
| 1002 | int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; |
| 1003 | char *buf; |
| 1004 | struct in6_defrouter *p, *ep; |
| 1005 | size_t l; |
| 1006 | struct timeval time; |
| 1007 | |
| 1008 | if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { |
| 1009 | err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); |
| 1010 | /*NOTREACHED*/ |
| 1011 | } |
| 1012 | buf = malloc(l); |
| 1013 | if (!buf) { |
| 1014 | errx(1, "not enough core"); |
| 1015 | /*NOTREACHED*/ |
| 1016 | } |
| 1017 | if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { |
| 1018 | err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); |
| 1019 | /*NOTREACHED*/ |
| 1020 | } |
| 1021 | |
| 1022 | ep = (struct in6_defrouter *)(buf + l); |
| 1023 | for (p = (struct in6_defrouter *)buf; p < ep; p++) { |
| 1024 | int rtpref; |
| 1025 | |
| 1026 | if (getnameinfo((struct sockaddr *)&p->rtaddr, |
| 1027 | p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, |
| 1028 | NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)) != 0) |
| 1029 | strlcpy(host_buf, "?", sizeof(host_buf)); |
| 1030 | |
| 1031 | printf("%s if=%s", host_buf, |
| 1032 | if_indextoname(p->if_index, ifix_buf)); |
| 1033 | printf(", flags=%s%s", |
| 1034 | p->flags & ND_RA_FLAG_MANAGED ? "M" : "", |
| 1035 | p->flags & ND_RA_FLAG_OTHER ? "O" : ""); |
| 1036 | rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; |
| 1037 | printf(", pref=%s", rtpref_str[rtpref]); |
| 1038 | |
| 1039 | gettimeofday(&time, 0); |
| 1040 | if (p->expire == 0) |
| 1041 | printf(", expire=Never\n"); |
| 1042 | else |
| 1043 | printf(", expire=%s\n", |
| 1044 | sec2str(p->expire - time.tv_sec)); |
| 1045 | } |
| 1046 | free(buf); |
| 1047 | #else |
| 1048 | struct in6_drlist dr; |
| 1049 | int s, i; |
| 1050 | struct timeval time; |
| 1051 | |
| 1052 | if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { |
| 1053 | perror("ndp: socket"); |
| 1054 | exit(1); |
| 1055 | } |
| 1056 | bzero(&dr, sizeof(dr)); |
| 1057 | strcpy(dr.ifname, "lo0"); /* dummy */ |
| 1058 | if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { |
| 1059 | perror("ioctl (SIOCGDRLST_IN6)"); |
| 1060 | exit(1); |
| 1061 | } |
| 1062 | #define DR dr.defrouter[i] |
| 1063 | for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { |
| 1064 | struct sockaddr_in6 sin6; |
| 1065 | |
| 1066 | bzero(&sin6, sizeof(sin6)); |
| 1067 | sin6.sin6_family = AF_INET6; |
| 1068 | sin6.sin6_len = sizeof(sin6); |
| 1069 | sin6.sin6_addr = DR.rtaddr; |
| 1070 | getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, |
| 1071 | sizeof(host_buf), NULL, 0, |
| 1072 | NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); |
| 1073 | |
| 1074 | printf("%s if=%s", host_buf, |
| 1075 | if_indextoname(DR.if_index, ifix_buf)); |
| 1076 | printf(", flags=%s%s", |
| 1077 | DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", |
| 1078 | DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); |
| 1079 | gettimeofday(&time, 0); |
| 1080 | if (DR.expire == 0) |
| 1081 | printf(", expire=Never\n"); |
| 1082 | else |
| 1083 | printf(", expire=%s\n", |
| 1084 | sec2str(DR.expire - time.tv_sec)); |
| 1085 | } |
| 1086 | #undef DR |
| 1087 | close(s); |
| 1088 | #endif |
| 1089 | } |
| 1090 | |
| 1091 | void |
| 1092 | plist() |
| 1093 | { |
| 1094 | #ifdef ICMPV6CTL_ND6_PRLIST |
| 1095 | int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; |
| 1096 | char *buf; |
| 1097 | struct in6_prefix *p, *ep, *n; |
| 1098 | struct sockaddr_in6 *advrtr; |
| 1099 | size_t l; |
| 1100 | struct timeval time; |
| 1101 | #ifdef NI_WITHSCOPEID |
| 1102 | const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID; |
| 1103 | int ninflags = (nflag ? NI_NUMERICHOST : 0) | NI_WITHSCOPEID; |
| 1104 | #else |
| 1105 | const int niflags = NI_NUMERICHOST; |
| 1106 | int ninflags = nflag ? NI_NUMERICHOST : 0; |
| 1107 | #endif |
| 1108 | char namebuf[NI_MAXHOST]; |
| 1109 | |
| 1110 | if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { |
| 1111 | err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); |
| 1112 | /*NOTREACHED*/ |
| 1113 | } |
| 1114 | buf = malloc(l); |
| 1115 | if (!buf) { |
| 1116 | errx(1, "not enough core"); |
| 1117 | /*NOTREACHED*/ |
| 1118 | } |
| 1119 | if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { |
| 1120 | err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); |
| 1121 | /*NOTREACHED*/ |
| 1122 | } |
| 1123 | |
| 1124 | ep = (struct in6_prefix *)(buf + l); |
| 1125 | for (p = (struct in6_prefix *)buf; p < ep; p = n) { |
| 1126 | advrtr = (struct sockaddr_in6 *)(p + 1); |
| 1127 | n = (struct in6_prefix *)&advrtr[p->advrtrs]; |
| 1128 | |
| 1129 | if (getnameinfo((struct sockaddr *)&p->prefix, |
| 1130 | p->prefix.sin6_len, namebuf, sizeof(namebuf), |
| 1131 | NULL, 0, niflags) != 0) |
| 1132 | strlcpy(namebuf, "?", sizeof(namebuf)); |
| 1133 | printf("%s/%d if=%s\n", namebuf, p->prefixlen, |
| 1134 | if_indextoname(p->if_index, ifix_buf)); |
| 1135 | |
| 1136 | gettimeofday(&time, 0); |
| 1137 | /* |
| 1138 | * meaning of fields, especially flags, is very different |
| 1139 | * by origin. notify the difference to the users. |
| 1140 | */ |
| 1141 | printf("flags=%s%s%s%s%s", |
| 1142 | p->raflags.onlink ? "L" : "", |
| 1143 | p->raflags.autonomous ? "A" : "", |
| 1144 | (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", |
| 1145 | (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", |
| 1146 | #ifdef NDPRF_HOME |
| 1147 | (p->flags & NDPRF_HOME) != 0 ? "H" : "" |
| 1148 | #else |
| 1149 | "" |
| 1150 | #endif |
| 1151 | ); |
| 1152 | if (p->vltime == ND6_INFINITE_LIFETIME) |
| 1153 | printf(" vltime=infinity"); |
| 1154 | else |
| 1155 | printf(" vltime=%ld", (long)p->vltime); |
| 1156 | if (p->pltime == ND6_INFINITE_LIFETIME) |
| 1157 | printf(", pltime=infinity"); |
| 1158 | else |
| 1159 | printf(", pltime=%ld", (long)p->pltime); |
| 1160 | if (p->expire == 0) |
| 1161 | printf(", expire=Never"); |
| 1162 | else if (p->expire >= time.tv_sec) |
| 1163 | printf(", expire=%s", |
| 1164 | sec2str(p->expire - time.tv_sec)); |
| 1165 | else |
| 1166 | printf(", expired"); |
| 1167 | printf(", ref=%d", p->refcnt); |
| 1168 | printf("\n"); |
| 1169 | /* |
| 1170 | * "advertising router" list is meaningful only if the prefix |
| 1171 | * information is from RA. |
| 1172 | */ |
| 1173 | if (p->advrtrs) { |
| 1174 | int j; |
| 1175 | struct sockaddr_in6 *sin6; |
| 1176 | |
| 1177 | sin6 = (struct sockaddr_in6 *)(p + 1); |
| 1178 | printf(" advertised by\n"); |
| 1179 | for (j = 0; j < p->advrtrs; j++) { |
| 1180 | struct in6_nbrinfo *nbi; |
| 1181 | |
| 1182 | if (getnameinfo((struct sockaddr *)sin6, |
| 1183 | sin6->sin6_len, namebuf, sizeof(namebuf), |
| 1184 | NULL, 0, ninflags) != 0) |
| 1185 | strlcpy(namebuf, "?", sizeof(namebuf)); |
| 1186 | printf(" %s", namebuf); |
| 1187 | |
| 1188 | nbi = getnbrinfo(&sin6->sin6_addr, p->if_index, |
| 1189 | 0); |
| 1190 | if (nbi) { |
| 1191 | switch(nbi->state) { |
| 1192 | case ND6_LLINFO_REACHABLE: |
| 1193 | case ND6_LLINFO_STALE: |
| 1194 | case ND6_LLINFO_DELAY: |
| 1195 | case ND6_LLINFO_PROBE: |
| 1196 | printf(" (reachable)\n"); |
| 1197 | break; |
| 1198 | default: |
| 1199 | printf(" (unreachable)\n"); |
| 1200 | } |
| 1201 | } else |
| 1202 | printf(" (no neighbor state)\n"); |
| 1203 | sin6++; |
| 1204 | } |
| 1205 | } else |
| 1206 | printf(" No advertising router\n"); |
| 1207 | } |
| 1208 | free(buf); |
| 1209 | #else |
| 1210 | struct in6_prlist pr; |
| 1211 | int s, i; |
| 1212 | struct timeval time; |
| 1213 | |
| 1214 | gettimeofday(&time, 0); |
| 1215 | |
| 1216 | if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { |
| 1217 | perror("ndp: socket"); |
| 1218 | exit(1); |
| 1219 | } |
| 1220 | bzero(&pr, sizeof(pr)); |
| 1221 | strcpy(pr.ifname, "lo0"); /* dummy */ |
| 1222 | if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { |
| 1223 | perror("ioctl (SIOCGPRLST_IN6)"); |
| 1224 | exit(1); |
| 1225 | } |
| 1226 | #define PR pr.prefix[i] |
| 1227 | for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { |
| 1228 | struct sockaddr_in6 p6; |
| 1229 | char namebuf[NI_MAXHOST]; |
| 1230 | int niflags; |
| 1231 | |
| 1232 | #ifdef NDPRF_ONLINK |
| 1233 | p6 = PR.prefix; |
| 1234 | #else |
| 1235 | memset(&p6, 0, sizeof(p6)); |
| 1236 | p6.sin6_family = AF_INET6; |
| 1237 | p6.sin6_len = sizeof(p6); |
| 1238 | p6.sin6_addr = PR.prefix; |
| 1239 | #endif |
| 1240 | |
| 1241 | /* |
| 1242 | * copy link index to sin6_scope_id field. |
| 1243 | * XXX: KAME specific. |
| 1244 | */ |
| 1245 | if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { |
| 1246 | u_int16_t linkid; |
| 1247 | |
| 1248 | memcpy(&linkid, &p6.sin6_addr.s6_addr[2], |
| 1249 | sizeof(linkid)); |
| 1250 | linkid = ntohs(linkid); |
| 1251 | p6.sin6_scope_id = linkid; |
| 1252 | p6.sin6_addr.s6_addr[2] = 0; |
| 1253 | p6.sin6_addr.s6_addr[3] = 0; |
| 1254 | } |
| 1255 | |
| 1256 | niflags = NI_NUMERICHOST; |
| 1257 | #ifdef __KAME__ |
| 1258 | niflags |= NI_WITHSCOPEID; |
| 1259 | #endif |
| 1260 | if (getnameinfo((struct sockaddr *)&p6, |
| 1261 | sizeof(p6), namebuf, sizeof(namebuf), |
| 1262 | NULL, 0, niflags)) { |
| 1263 | warnx("getnameinfo failed"); |
| 1264 | continue; |
| 1265 | } |
| 1266 | printf("%s/%d if=%s\n", namebuf, PR.prefixlen, |
| 1267 | if_indextoname(PR.if_index, ifix_buf)); |
| 1268 | |
| 1269 | gettimeofday(&time, 0); |
| 1270 | /* |
| 1271 | * meaning of fields, especially flags, is very different |
| 1272 | * by origin. notify the difference to the users. |
| 1273 | */ |
| 1274 | #if 0 |
| 1275 | printf(" %s", |
| 1276 | PR.origin == PR_ORIG_RA ? "" : "advertise: "); |
| 1277 | #endif |
| 1278 | #ifdef NDPRF_ONLINK |
| 1279 | printf("flags=%s%s%s%s%s", |
| 1280 | PR.raflags.onlink ? "L" : "", |
| 1281 | PR.raflags.autonomous ? "A" : "", |
| 1282 | (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", |
| 1283 | (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", |
| 1284 | #ifdef NDPRF_HOME |
| 1285 | (PR.flags & NDPRF_HOME) != 0 ? "H" : "" |
| 1286 | #else |
| 1287 | "" |
| 1288 | #endif |
| 1289 | ); |
| 1290 | #else |
| 1291 | printf("flags=%s%s", |
| 1292 | PR.raflags.onlink ? "L" : "", |
| 1293 | PR.raflags.autonomous ? "A" : ""); |
| 1294 | #endif |
| 1295 | if (PR.vltime == ND6_INFINITE_LIFETIME) |
| 1296 | printf(" vltime=infinity"); |
| 1297 | else |
| 1298 | printf(" vltime=%ld", (long)PR.vltime); |
| 1299 | if (PR.pltime == ND6_INFINITE_LIFETIME) |
| 1300 | printf(", pltime=infinity"); |
| 1301 | else |
| 1302 | printf(", pltime=%ld", (long)PR.pltime); |
| 1303 | if (PR.expire == 0) |
| 1304 | printf(", expire=Never"); |
| 1305 | else if (PR.expire >= time.tv_sec) |
| 1306 | printf(", expire=%s", |
| 1307 | sec2str(PR.expire - time.tv_sec)); |
| 1308 | else |
| 1309 | printf(", expired"); |
| 1310 | #ifdef NDPRF_ONLINK |
| 1311 | printf(", ref=%d", PR.refcnt); |
| 1312 | #endif |
| 1313 | #if 0 |
| 1314 | switch (PR.origin) { |
| 1315 | case PR_ORIG_RA: |
| 1316 | printf(", origin=RA"); |
| 1317 | break; |
| 1318 | case PR_ORIG_RR: |
| 1319 | printf(", origin=RR"); |
| 1320 | break; |
| 1321 | case PR_ORIG_STATIC: |
| 1322 | printf(", origin=static"); |
| 1323 | break; |
| 1324 | case PR_ORIG_KERNEL: |
| 1325 | printf(", origin=kernel"); |
| 1326 | break; |
| 1327 | default: |
| 1328 | printf(", origin=?"); |
| 1329 | break; |
| 1330 | } |
| 1331 | #endif |
| 1332 | printf("\n"); |
| 1333 | /* |
| 1334 | * "advertising router" list is meaningful only if the prefix |
| 1335 | * information is from RA. |
| 1336 | */ |
| 1337 | if (0 && /* prefix origin is almost obsolted */ |
| 1338 | PR.origin != PR_ORIG_RA) |
| 1339 | ; |
| 1340 | else if (PR.advrtrs) { |
| 1341 | int j; |
| 1342 | printf(" advertised by\n"); |
| 1343 | for (j = 0; j < PR.advrtrs; j++) { |
| 1344 | struct sockaddr_in6 sin6; |
| 1345 | struct in6_nbrinfo *nbi; |
| 1346 | |
| 1347 | bzero(&sin6, sizeof(sin6)); |
| 1348 | sin6.sin6_family = AF_INET6; |
| 1349 | sin6.sin6_len = sizeof(sin6); |
| 1350 | sin6.sin6_addr = PR.advrtr[j]; |
| 1351 | sin6.sin6_scope_id = PR.if_index; /* XXX */ |
| 1352 | getnameinfo((struct sockaddr *)&sin6, |
| 1353 | sin6.sin6_len, host_buf, |
| 1354 | sizeof(host_buf), NULL, 0, |
| 1355 | NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); |
| 1356 | printf(" %s", host_buf); |
| 1357 | |
| 1358 | nbi = getnbrinfo(&sin6.sin6_addr, PR.if_index, |
| 1359 | 0); |
| 1360 | if (nbi) { |
| 1361 | switch(nbi->state) { |
| 1362 | case ND6_LLINFO_REACHABLE: |
| 1363 | case ND6_LLINFO_STALE: |
| 1364 | case ND6_LLINFO_DELAY: |
| 1365 | case ND6_LLINFO_PROBE: |
| 1366 | printf(" (reachable)\n"); |
| 1367 | break; |
| 1368 | default: |
| 1369 | printf(" (unreachable)\n"); |
| 1370 | } |
| 1371 | } else |
| 1372 | printf(" (no neighbor state)\n"); |
| 1373 | } |
| 1374 | if (PR.advrtrs > DRLSTSIZ) |
| 1375 | printf(" and %d routers\n", |
| 1376 | PR.advrtrs - DRLSTSIZ); |
| 1377 | } else |
| 1378 | printf(" No advertising router\n"); |
| 1379 | } |
| 1380 | #undef PR |
| 1381 | close(s); |
| 1382 | #endif |
| 1383 | } |
| 1384 | |
| 1385 | void |
| 1386 | pfx_flush() |
| 1387 | { |
| 1388 | char dummyif[IFNAMSIZ+8]; |
| 1389 | int s; |
| 1390 | |
| 1391 | if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) |
| 1392 | err(1, "socket"); |
| 1393 | strcpy(dummyif, "lo0"); /* dummy */ |
| 1394 | if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) |
| 1395 | err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); |
| 1396 | } |
| 1397 | |
| 1398 | void |
| 1399 | rtr_flush() |
| 1400 | { |
| 1401 | char dummyif[IFNAMSIZ+8]; |
| 1402 | int s; |
| 1403 | |
| 1404 | if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) |
| 1405 | err(1, "socket"); |
| 1406 | strcpy(dummyif, "lo0"); /* dummy */ |
| 1407 | if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) |
| 1408 | err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); |
| 1409 | |
| 1410 | close(s); |
| 1411 | } |
| 1412 | |
| 1413 | void |
| 1414 | harmonize_rtr() |
| 1415 | { |
| 1416 | char dummyif[IFNAMSIZ+8]; |
| 1417 | int s; |
| 1418 | |
| 1419 | if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) |
| 1420 | err(1, "socket"); |
| 1421 | strcpy(dummyif, "lo0"); /* dummy */ |
| 1422 | if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) |
| 1423 | err(1, "ioctl (SIOCSNDFLUSH_IN6)"); |
| 1424 | |
| 1425 | close(s); |
| 1426 | } |
| 1427 | |
| 1428 | #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ |
| 1429 | static void |
| 1430 | setdefif(ifname) |
| 1431 | char *ifname; |
| 1432 | { |
| 1433 | struct in6_ndifreq ndifreq; |
| 1434 | unsigned int ifindex; |
| 1435 | |
| 1436 | if (strcasecmp(ifname, "delete") == 0) |
| 1437 | ifindex = 0; |
| 1438 | else { |
| 1439 | if ((ifindex = if_nametoindex(ifname)) == 0) |
| 1440 | err(1, "failed to resolve i/f index for %s", ifname); |
| 1441 | } |
| 1442 | |
| 1443 | if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) |
| 1444 | err(1, "socket"); |
| 1445 | |
| 1446 | strcpy(ndifreq.ifname, "lo0"); /* dummy */ |
| 1447 | ndifreq.ifindex = ifindex; |
| 1448 | |
| 1449 | if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) |
| 1450 | err(1, "ioctl (SIOCSDEFIFACE_IN6)"); |
| 1451 | |
| 1452 | close(s); |
| 1453 | } |
| 1454 | |
| 1455 | static void |
| 1456 | getdefif() |
| 1457 | { |
| 1458 | struct in6_ndifreq ndifreq; |
| 1459 | char ifname[IFNAMSIZ+8]; |
| 1460 | |
| 1461 | if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) |
| 1462 | err(1, "socket"); |
| 1463 | |
| 1464 | memset(&ndifreq, 0, sizeof(ndifreq)); |
| 1465 | strcpy(ndifreq.ifname, "lo0"); /* dummy */ |
| 1466 | |
| 1467 | if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) |
| 1468 | err(1, "ioctl (SIOCGDEFIFACE_IN6)"); |
| 1469 | |
| 1470 | if (ndifreq.ifindex == 0) |
| 1471 | printf("No default interface.\n"); |
| 1472 | else { |
| 1473 | if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) |
| 1474 | err(1, "failed to resolve ifname for index %lu", |
| 1475 | ndifreq.ifindex); |
| 1476 | printf("ND default interface = %s\n", ifname); |
| 1477 | } |
| 1478 | |
| 1479 | close(s); |
| 1480 | } |
| 1481 | #endif |
| 1482 | |
| 1483 | static char * |
| 1484 | sec2str(total) |
| 1485 | time_t total; |
| 1486 | { |
| 1487 | static char result[256]; |
| 1488 | int days, hours, mins, secs; |
| 1489 | int first = 1; |
| 1490 | char *p = result; |
| 1491 | |
| 1492 | days = total / 3600 / 24; |
| 1493 | hours = (total / 3600) % 24; |
| 1494 | mins = (total / 60) % 60; |
| 1495 | secs = total % 60; |
| 1496 | |
| 1497 | if (days) { |
| 1498 | first = 0; |
| 1499 | p += sprintf(p, "%dd", days); |
| 1500 | } |
| 1501 | if (!first || hours) { |
| 1502 | first = 0; |
| 1503 | p += sprintf(p, "%dh", hours); |
| 1504 | } |
| 1505 | if (!first || mins) { |
| 1506 | first = 0; |
| 1507 | p += sprintf(p, "%dm", mins); |
| 1508 | } |
| 1509 | sprintf(p, "%ds", secs); |
| 1510 | |
| 1511 | return(result); |
| 1512 | } |
| 1513 | |
| 1514 | /* |
| 1515 | * Print the timestamp |
| 1516 | * from tcpdump/util.c |
| 1517 | */ |
| 1518 | static void |
| 1519 | ts_print(tvp) |
| 1520 | const struct timeval *tvp; |
| 1521 | { |
| 1522 | int s; |
| 1523 | |
| 1524 | /* Default */ |
| 1525 | s = (tvp->tv_sec + thiszone) % 86400; |
| 1526 | (void)printf("%02d:%02d:%02d.%06u ", |
| 1527 | s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); |
| 1528 | } |