ndp.c revision 1.35
1 /* $NetBSD: ndp.c,v 1.35 2006/05/13 20:46:15 christos Exp $ */ 2 /* $KAME: ndp.c,v 1.121 2005/07/13 11:30:13 keiichi 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 84 #include <net/if.h> 85 #include <net/if_dl.h> 86 #include <net/if_types.h> 87 #include <net/route.h> 88 89 #include <netinet/in.h> 90 91 #include <netinet/icmp6.h> 92 #include <netinet6/in6_var.h> 93 #include <netinet6/nd6.h> 94 95 #include <arpa/inet.h> 96 97 #include <netdb.h> 98 #include <errno.h> 99 #include <nlist.h> 100 #include <stdio.h> 101 #include <string.h> 102 #include <paths.h> 103 #include <err.h> 104 #include <stdlib.h> 105 #include <fcntl.h> 106 #include <unistd.h> 107 #include <err.h> 108 #include "gmt2local.h" 109 110 /* packing rule for routing socket */ 111 #define ROUNDUP(a) \ 112 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 113 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 114 115 static pid_t pid; 116 static int nflag; 117 static int tflag; 118 static int32_t thiszone; /* time difference with gmt */ 119 static int my_s = -1; 120 static unsigned int repeat = 0; 121 122 123 static char host_buf[NI_MAXHOST]; /* getnameinfo() */ 124 static char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 125 126 static void getsocket(void); 127 static int set(int, char **); 128 static void get(char *); 129 static int delete(char *); 130 static void dump(struct in6_addr *, int); 131 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *, unsigned int, int); 132 static char *ether_str(struct sockaddr_dl *); 133 static int ndp_ether_aton(char *, u_char *); 134 static void usage(void); 135 static int rtmsg(int); 136 static void ifinfo(char *, int, char **); 137 static void rtrlist(void); 138 static void plist(void); 139 static void pfx_flush(void); 140 static void rtrlist(void); 141 static void rtr_flush(void); 142 static void harmonize_rtr(void); 143 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 144 static void getdefif(void); 145 static void setdefif(char *); 146 #endif 147 static const char *sec2str(time_t); 148 static char *ether_str(struct sockaddr_dl *); 149 static void ts_print(const struct timeval *); 150 151 #ifdef ICMPV6CTL_ND6_DRLIST 152 static const char *rtpref_str[] = { 153 "medium", /* 00 */ 154 "high", /* 01 */ 155 "rsv", /* 10 */ 156 "low" /* 11 */ 157 }; 158 #endif 159 160 static int mode = 0; 161 static char *arg = NULL; 162 163 int 164 main(int argc, char **argv) 165 { 166 int ch; 167 168 pid = getpid(); 169 thiszone = gmt2local(0L); 170 while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 171 switch (ch) { 172 case 'a': 173 case 'c': 174 case 'p': 175 case 'r': 176 case 'H': 177 case 'P': 178 case 'R': 179 case 's': 180 case 'I': 181 if (mode) { 182 usage(); 183 /*NOTREACHED*/ 184 } 185 mode = ch; 186 arg = NULL; 187 break; 188 case 'd': 189 case 'f': 190 case 'i' : 191 if (mode) { 192 usage(); 193 /*NOTREACHED*/ 194 } 195 mode = ch; 196 arg = optarg; 197 break; 198 case 'n': 199 nflag = 1; 200 break; 201 case 't': 202 tflag = 1; 203 break; 204 case 'A': 205 if (mode) { 206 usage(); 207 /*NOTREACHED*/ 208 } 209 mode = 'a'; 210 repeat = atoi(optarg); 211 break; 212 default: 213 usage(); 214 } 215 216 argc -= optind; 217 argv += optind; 218 219 switch (mode) { 220 case 'a': 221 case 'c': 222 if (argc != 0) { 223 usage(); 224 /*NOTREACHED*/ 225 } 226 dump(0, mode == 'c'); 227 break; 228 case 'd': 229 if (argc != 0) { 230 usage(); 231 /*NOTREACHED*/ 232 } 233 (void)delete(arg); 234 break; 235 case 'I': 236 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 237 if (argc > 1) { 238 usage(); 239 /*NOTREACHED*/ 240 } else if (argc == 1) { 241 if (strcmp(*argv, "delete") == 0 || 242 if_nametoindex(*argv)) 243 setdefif(*argv); 244 else 245 errx(1, "invalid interface %s", *argv); 246 } 247 getdefif(); /* always call it to print the result */ 248 break; 249 #else 250 errx(1, "not supported yet"); 251 /*NOTREACHED*/ 252 #endif 253 case 'p': 254 if (argc != 0) { 255 usage(); 256 /*NOTREACHED*/ 257 } 258 plist(); 259 break; 260 case 'i': 261 ifinfo(arg, argc, argv); 262 break; 263 case 'r': 264 if (argc != 0) { 265 usage(); 266 /*NOTREACHED*/ 267 } 268 rtrlist(); 269 break; 270 case 's': 271 if (argc < 2 || argc > 4) 272 usage(); 273 return(set(argc, argv) ? 1 : 0); 274 case 'H': 275 if (argc != 0) { 276 usage(); 277 /*NOTREACHED*/ 278 } 279 harmonize_rtr(); 280 break; 281 case 'P': 282 if (argc != 0) { 283 usage(); 284 /*NOTREACHED*/ 285 } 286 pfx_flush(); 287 break; 288 case 'R': 289 if (argc != 0) { 290 usage(); 291 /*NOTREACHED*/ 292 } 293 rtr_flush(); 294 break; 295 case 0: 296 if (argc != 1) { 297 usage(); 298 /*NOTREACHED*/ 299 } 300 get(argv[0]); 301 break; 302 } 303 return(0); 304 } 305 306 static void 307 getsocket(void) 308 { 309 if (my_s < 0) { 310 my_s = socket(PF_ROUTE, SOCK_RAW, 0); 311 if (my_s < 0) 312 err(1, "socket"); 313 } 314 } 315 316 #ifdef notdef 317 static struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 318 #endif 319 static struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 320 static struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 321 static int expire_time, flags, found_entry; 322 static struct { 323 struct rt_msghdr m_rtm; 324 char m_space[512]; 325 } m_rtmsg; 326 327 /* 328 * Set an individual neighbor cache entry 329 */ 330 static int 331 set(int argc, char **argv) 332 { 333 register struct sockaddr_in6 *mysin = &sin_m; 334 register struct sockaddr_dl *sdl; 335 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 336 struct addrinfo hints, *res; 337 int gai_error; 338 u_char *ea; 339 char *host = argv[0], *eaddr = argv[1]; 340 341 getsocket(); 342 argc -= 2; 343 argv += 2; 344 sdl_m = blank_sdl; 345 sin_m = blank_sin; 346 347 (void)memset(&hints, 0, sizeof(hints)); 348 hints.ai_family = AF_INET6; 349 gai_error = getaddrinfo(host, NULL, &hints, &res); 350 if (gai_error) { 351 warnx("%s: %s\n", host, gai_strerror(gai_error)); 352 return 1; 353 } 354 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 355 #ifdef __KAME__ 356 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr)) { 357 *(u_int16_t *)(void *)&mysin->sin6_addr.s6_addr[2] = 358 htons(((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_scope_id); 359 } 360 #endif 361 ea = (u_char *)LLADDR(&sdl_m); 362 if (ndp_ether_aton(eaddr, ea) == 0) 363 sdl_m.sdl_alen = 6; 364 flags = expire_time = 0; 365 while (argc-- > 0) { 366 if (strncmp(argv[0], "temp", 4) == 0) { 367 struct timeval tim; 368 369 (void)gettimeofday(&tim, 0); 370 expire_time = tim.tv_sec + 20 * 60; 371 } else if (strncmp(argv[0], "proxy", 5) == 0) 372 flags |= RTF_ANNOUNCE; 373 argv++; 374 } 375 if (rtmsg(RTM_GET) < 0) { 376 errx(1, "RTM_GET(%s) failed", host); 377 /* NOTREACHED */ 378 } 379 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 380 sdl = (struct sockaddr_dl *)(void *)(ROUNDUP(mysin->sin6_len) + (char *)(void *)mysin); 381 if (IN6_ARE_ADDR_EQUAL(&mysin->sin6_addr, &sin_m.sin6_addr)) { 382 if (sdl->sdl_family == AF_LINK && 383 (rtm->rtm_flags & RTF_LLINFO) && 384 !(rtm->rtm_flags & RTF_GATEWAY)) { 385 switch (sdl->sdl_type) { 386 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 387 case IFT_ISO88024: case IFT_ISO88025: 388 goto overwrite; 389 } 390 } 391 /* 392 * IPv4 arp command retries with sin_other = SIN_PROXY here. 393 */ 394 (void)fprintf(stderr, "set: cannot configure a new entry\n"); 395 return 1; 396 } 397 398 overwrite: 399 if (sdl->sdl_family != AF_LINK) { 400 warnx("cannot intuit interface index and type for %s", host); 401 return (1); 402 } 403 sdl_m.sdl_type = sdl->sdl_type; 404 sdl_m.sdl_index = sdl->sdl_index; 405 return (rtmsg(RTM_ADD)); 406 } 407 408 /* 409 * Display an individual neighbor cache entry 410 */ 411 static void 412 get(char *host) 413 { 414 struct sockaddr_in6 *mysin = &sin_m; 415 struct addrinfo hints, *res; 416 int gai_error; 417 418 sin_m = blank_sin; 419 (void)memset(&hints, 0, sizeof(hints)); 420 hints.ai_family = AF_INET6; 421 gai_error = getaddrinfo(host, NULL, &hints, &res); 422 if (gai_error) { 423 warnx("%s: %s\n", host, gai_strerror(gai_error)); 424 return; 425 } 426 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 427 #ifdef __KAME__ 428 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr)) { 429 *(u_int16_t *)(void *)&mysin->sin6_addr.s6_addr[2] = 430 htons(((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_scope_id); 431 } 432 #endif 433 dump(&mysin->sin6_addr, 0); 434 if (found_entry == 0) { 435 (void)getnameinfo((struct sockaddr *)(void *)mysin, 436 (socklen_t)mysin->sin6_len, 437 host_buf, sizeof(host_buf), NULL ,0, 438 (nflag ? NI_NUMERICHOST : 0)); 439 errx(1, "%s (%s) -- no entry", host, host_buf); 440 } 441 } 442 443 /* 444 * Delete a neighbor cache entry 445 */ 446 static int 447 delete(char *host) 448 { 449 struct sockaddr_in6 *mysin = &sin_m; 450 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 451 struct sockaddr_dl *sdl; 452 struct addrinfo hints, *res; 453 int gai_error; 454 455 getsocket(); 456 sin_m = blank_sin; 457 458 bzero(&hints, sizeof(hints)); 459 hints.ai_family = AF_INET6; 460 gai_error = getaddrinfo(host, NULL, &hints, &res); 461 if (gai_error) { 462 warnx("%s: %s\n", host, gai_strerror(gai_error)); 463 return 1; 464 } 465 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 466 #ifdef __KAME__ 467 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr)) { 468 *(u_int16_t *)(void *)&mysin->sin6_addr.s6_addr[2] = 469 htons(((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_scope_id); 470 } 471 #endif 472 if (rtmsg(RTM_GET) < 0) 473 errx(1, "RTM_GET(%s) failed", host); 474 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 475 sdl = (struct sockaddr_dl *)(void *)(ROUNDUP(mysin->sin6_len) + 476 (char *)(void *)mysin); 477 if (IN6_ARE_ADDR_EQUAL(&mysin->sin6_addr, &sin_m.sin6_addr)) { 478 if (sdl->sdl_family == AF_LINK && 479 (rtm->rtm_flags & RTF_LLINFO) && 480 !(rtm->rtm_flags & RTF_GATEWAY)) { 481 goto delete; 482 } 483 /* 484 * IPv4 arp command retries with sin_other = SIN_PROXY here. 485 */ 486 warnx("delete: cannot delete non-NDP entry"); 487 return 1; 488 } 489 490 delete: 491 if (sdl->sdl_family != AF_LINK) { 492 (void)printf("cannot locate %s\n", host); 493 return (1); 494 } 495 if (rtmsg(RTM_DELETE) == 0) { 496 struct sockaddr_in6 s6 = *mysin; /* XXX: for safety */ 497 498 #ifdef __KAME__ 499 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 500 s6.sin6_scope_id = ntohs(*(u_int16_t *)(void *)&s6.sin6_addr.s6_addr[2]); 501 *(u_int16_t *)(void *)&s6.sin6_addr.s6_addr[2] = 0; 502 } 503 #endif 504 (void)getnameinfo((struct sockaddr *)(void *)&s6, 505 (socklen_t)s6.sin6_len, host_buf, 506 sizeof(host_buf), NULL, 0, 507 (nflag ? NI_NUMERICHOST : 0)); 508 (void)printf("%s (%s) deleted\n", host, host_buf); 509 } 510 511 return 0; 512 } 513 514 #define W_ADDR 36 515 #define W_LL 17 516 #define W_IF 6 517 518 /* 519 * Dump the entire neighbor cache 520 */ 521 static void 522 dump(struct in6_addr *addr, int cflag) 523 { 524 int mib[6]; 525 size_t needed; 526 char *lim, *buf, *next; 527 struct rt_msghdr *rtm; 528 struct sockaddr_in6 *mysin; 529 struct sockaddr_dl *sdl; 530 struct in6_nbrinfo *nbi; 531 struct timeval tim; 532 int addrwidth; 533 int llwidth; 534 int ifwidth; 535 char flgbuf[8]; 536 const char *ifname; 537 538 /* Print header */ 539 if (!tflag && !cflag) 540 (void)printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 541 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 542 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 543 544 again:; 545 mib[0] = CTL_NET; 546 mib[1] = PF_ROUTE; 547 mib[2] = 0; 548 mib[3] = AF_INET6; 549 mib[4] = NET_RT_FLAGS; 550 mib[5] = RTF_LLINFO; 551 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 552 err(1, "sysctl(PF_ROUTE estimate)"); 553 if (needed > 0) { 554 if ((buf = malloc(needed)) == NULL) 555 err(1, "malloc"); 556 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 557 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 558 lim = buf + needed; 559 } else 560 buf = lim = NULL; 561 562 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 563 int isrouter = 0, prbs = 0; 564 565 rtm = (struct rt_msghdr *)(void *)next; 566 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 567 sdl = (struct sockaddr_dl *)(void *)((char *)(void *)mysin + ROUNDUP(mysin->sin6_len)); 568 569 /* 570 * Some OSes can produce a route that has the LINK flag but 571 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 572 * and BSD/OS, where xx is not the interface identifier on 573 * lo0). Such routes entry would annoy getnbrinfo() below, 574 * so we skip them. 575 * XXX: such routes should have the GATEWAY flag, not the 576 * LINK flag. However, there is rotten routing software 577 * that advertises all routes that have the GATEWAY flag. 578 * Thus, KAME kernel intentionally does not set the LINK flag. 579 * What is to be fixed is not ndp, but such routing software 580 * (and the kernel workaround)... 581 */ 582 if (sdl->sdl_family != AF_LINK) 583 continue; 584 585 if (!(rtm->rtm_flags & RTF_HOST)) 586 continue; 587 588 if (addr) { 589 if (!IN6_ARE_ADDR_EQUAL(addr, &mysin->sin6_addr)) 590 continue; 591 found_entry = 1; 592 } else if (IN6_IS_ADDR_MULTICAST(&mysin->sin6_addr)) 593 continue; 594 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr) || 595 IN6_IS_ADDR_MC_LINKLOCAL(&mysin->sin6_addr)) { 596 /* XXX: should scope id be filled in the kernel? */ 597 if (mysin->sin6_scope_id == 0) 598 mysin->sin6_scope_id = sdl->sdl_index; 599 #ifdef __KAME__ 600 /* KAME specific hack; removed the embedded id */ 601 *(u_int16_t *)(void *)&mysin->sin6_addr.s6_addr[2] = 0; 602 #endif 603 } 604 (void)getnameinfo((struct sockaddr *)(void *)mysin, 605 (socklen_t)mysin->sin6_len, 606 host_buf, sizeof(host_buf), NULL, 0, 607 (nflag ? NI_NUMERICHOST : 0)); 608 if (cflag) { 609 #ifdef RTF_WASCLONED 610 if (rtm->rtm_flags & RTF_WASCLONED) 611 (void)delete(host_buf); 612 #elif defined(RTF_CLONED) 613 if (rtm->rtm_flags & RTF_CLONED) 614 (void)delete(host_buf); 615 #else 616 (void)delete(host_buf); 617 #endif 618 continue; 619 } 620 (void)gettimeofday(&tim, 0); 621 if (tflag) 622 ts_print(&tim); 623 624 addrwidth = strlen(host_buf); 625 if (addrwidth < W_ADDR) 626 addrwidth = W_ADDR; 627 llwidth = strlen(ether_str(sdl)); 628 if (W_ADDR + W_LL - addrwidth > llwidth) 629 llwidth = W_ADDR + W_LL - addrwidth; 630 ifname = if_indextoname((unsigned int)sdl->sdl_index, ifix_buf); 631 if (!ifname) 632 ifname = "?"; 633 ifwidth = strlen(ifname); 634 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 635 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 636 637 (void)printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, 638 host_buf, llwidth, llwidth, ether_str(sdl), ifwidth, 639 ifwidth, ifname); 640 641 /* Print neighbor discovery specific informations */ 642 nbi = getnbrinfo(&mysin->sin6_addr, 643 (unsigned int)sdl->sdl_index, 1); 644 if (nbi) { 645 if (nbi->expire > tim.tv_sec) { 646 (void)printf(" %-9.9s", 647 sec2str(nbi->expire - tim.tv_sec)); 648 } else if (nbi->expire == 0) 649 (void)printf(" %-9.9s", "permanent"); 650 else 651 (void)printf(" %-9.9s", "expired"); 652 653 switch (nbi->state) { 654 case ND6_LLINFO_NOSTATE: 655 (void)printf(" N"); 656 break; 657 #ifdef ND6_LLINFO_WAITDELETE 658 case ND6_LLINFO_WAITDELETE: 659 (void)printf(" W"); 660 break; 661 #endif 662 case ND6_LLINFO_INCOMPLETE: 663 (void)printf(" I"); 664 break; 665 case ND6_LLINFO_REACHABLE: 666 (void)printf(" R"); 667 break; 668 case ND6_LLINFO_STALE: 669 (void)printf(" S"); 670 break; 671 case ND6_LLINFO_DELAY: 672 (void)printf(" D"); 673 break; 674 case ND6_LLINFO_PROBE: 675 (void)printf(" P"); 676 break; 677 default: 678 (void)printf(" ?"); 679 break; 680 } 681 682 isrouter = nbi->isrouter; 683 prbs = nbi->asked; 684 } else { 685 warnx("failed to get neighbor information"); 686 (void)printf(" "); 687 } 688 689 /* 690 * other flags. R: router, P: proxy, W: ?? 691 */ 692 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 693 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s", 694 isrouter ? "R" : "", 695 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 696 } else { 697 mysin = (struct sockaddr_in6 *)(void *) 698 (sdl->sdl_len + (char *)(void *)sdl); 699 #if 0 /* W and P are mystery even for us */ 700 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 701 isrouter ? "R" : "", 702 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 703 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 704 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 705 #else 706 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s", 707 isrouter ? "R" : "", 708 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 709 #endif 710 } 711 (void)printf(" %s", flgbuf); 712 713 if (prbs) 714 (void)printf(" %d", prbs); 715 716 (void)printf("\n"); 717 } 718 if (buf != NULL) 719 free(buf); 720 721 if (repeat) { 722 (void)printf("\n"); 723 (void)fflush(stdout); 724 (void)sleep(repeat); 725 goto again; 726 } 727 } 728 729 static struct in6_nbrinfo * 730 getnbrinfo(struct in6_addr *addr, unsigned int ifindex, int warning) 731 { 732 static struct in6_nbrinfo nbi; 733 int s; 734 735 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 736 err(1, "socket"); 737 738 (void)memset(&nbi, 0, sizeof(nbi)); 739 (void)if_indextoname(ifindex, nbi.ifname); 740 nbi.addr = *addr; 741 if (ioctl(s, SIOCGNBRINFO_IN6, &nbi) < 0) { 742 if (warning) 743 warn("ioctl(SIOCGNBRINFO_IN6)"); 744 (void)close(s); 745 return(NULL); 746 } 747 748 (void)close(s); 749 return(&nbi); 750 } 751 752 static char * 753 ether_str(struct sockaddr_dl *sdl) 754 { 755 static char hbuf[NI_MAXHOST]; 756 757 if (sdl->sdl_alen) { 758 if (getnameinfo((struct sockaddr *)(void *)sdl, 759 (socklen_t)sdl->sdl_len, 760 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) 761 (void)snprintf(hbuf, sizeof(hbuf), "<invalid>"); 762 } else 763 (void)snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 764 765 return(hbuf); 766 } 767 768 static int 769 ndp_ether_aton(char *a, u_char *n) 770 { 771 int i, o[6]; 772 773 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 774 &o[3], &o[4], &o[5]); 775 if (i != 6) { 776 warnx("invalid Ethernet address '%s'", a); 777 return (1); 778 } 779 for (i = 0; i < 6; i++) 780 n[i] = o[i]; 781 return (0); 782 } 783 784 static void 785 usage(void) 786 { 787 const char *pn = getprogname(); 788 789 (void)fprintf(stderr, "Usage: %s [-nt] hostname\n", pn); 790 (void)fprintf(stderr, 791 " %s [-nt] -a | -c | -p | -r | -H | -P | -R\n", pn); 792 (void)fprintf(stderr, " %s [-nt] -A wait\n", pn); 793 (void)fprintf(stderr, " %s [-nt] -d hostname\n", pn); 794 (void)fprintf(stderr, " %s [-nt] -f filename\n", pn); 795 (void)fprintf(stderr, " %s [-nt] -i interface [flags...]\n", pn); 796 #ifdef SIOCSDEFIFACE_IN6 797 (void)fprintf(stderr, " %s [-nt] -I [interface|delete]\n", pn); 798 #endif 799 (void)fprintf(stderr, 800 " %s [-nt] -s nodename etheraddr [temp] [proxy]\n", pn); 801 exit(1); 802 } 803 804 static int 805 rtmsg(int cmd) 806 { 807 static int seq; 808 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 809 register char *cp = m_rtmsg.m_space; 810 register int l; 811 812 errno = 0; 813 if (cmd == RTM_DELETE) 814 goto doit; 815 (void)memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 816 rtm->rtm_flags = flags; 817 rtm->rtm_version = RTM_VERSION; 818 819 switch (cmd) { 820 default: 821 errx(1, "internal wrong cmd"); 822 /*NOTREACHED*/ 823 case RTM_ADD: 824 rtm->rtm_addrs |= RTA_GATEWAY; 825 if (expire_time) { 826 rtm->rtm_rmx.rmx_expire = expire_time; 827 rtm->rtm_inits = RTV_EXPIRE; 828 } 829 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 830 #ifdef notdef /* we don't support ipv6addr/128 type proxying. */ 831 if (rtm->rtm_flags & RTF_ANNOUNCE) { 832 rtm->rtm_flags &= ~RTF_HOST; 833 rtm->rtm_addrs |= RTA_NETMASK; 834 } 835 #endif 836 /* FALLTHROUGH */ 837 case RTM_GET: 838 rtm->rtm_addrs |= RTA_DST; 839 } 840 #define NEXTADDR(w, s) \ 841 if (rtm->rtm_addrs & (w)) { \ 842 (void)memcpy(cp, &s, sizeof(s)); \ 843 ADVANCE(cp, (struct sockaddr *)(void *)&s); \ 844 } 845 846 NEXTADDR(RTA_DST, sin_m); 847 NEXTADDR(RTA_GATEWAY, sdl_m); 848 #ifdef notdef /* we don't support ipv6addr/128 type proxying. */ 849 (void)memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 850 NEXTADDR(RTA_NETMASK, so_mask); 851 #endif 852 853 rtm->rtm_msglen = cp - (char *)(void *)&m_rtmsg; 854 doit: 855 l = rtm->rtm_msglen; 856 rtm->rtm_seq = ++seq; 857 rtm->rtm_type = cmd; 858 if (write(my_s, &m_rtmsg, (size_t)l) == -1) { 859 if (errno != ESRCH || cmd != RTM_DELETE) 860 err(1, "writing to routing socket"); 861 } 862 do { 863 l = read(my_s, &m_rtmsg, sizeof(m_rtmsg)); 864 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 865 if (l < 0) 866 warn("read from routing socket"); 867 return (0); 868 } 869 870 static void 871 ifinfo(char *ifname, int argc, char **argv) 872 { 873 struct in6_ndireq nd; 874 int i, s; 875 u_int32_t newflags; 876 #ifdef IPV6CTL_USETEMPADDR 877 u_int8_t nullbuf[8]; 878 #endif 879 880 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 881 err(1, "socket"); 882 (void)memset(&nd, 0, sizeof(nd)); 883 (void)strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 884 if (ioctl(s, SIOCGIFINFO_IN6, &nd) < 0) 885 err(1, "ioctl(SIOCGIFINFO_IN6)"); 886 #define ND nd.ndi 887 newflags = ND.flags; 888 for (i = 0; i < argc; i++) { 889 int clear = 0; 890 char *cp = argv[i]; 891 892 if (*cp == '-') { 893 clear = 1; 894 cp++; 895 } 896 897 #define SETFLAG(s, f) \ 898 do {\ 899 if (strcmp(cp, (s)) == 0) {\ 900 if (clear)\ 901 newflags &= ~(f);\ 902 else\ 903 newflags |= (f);\ 904 }\ 905 } while (/*CONSTCOND*/0) 906 /* 907 * XXX: this macro is not 100% correct, in that it matches "nud" against 908 * "nudbogus". But we just let it go since this is minor. 909 */ 910 #define SETVALUE(f, v) \ 911 do { \ 912 char *valptr; \ 913 unsigned long newval; \ 914 v = 0; /* unspecified */ \ 915 if (strncmp(cp, f, strlen(f)) == 0) { \ 916 valptr = strchr(cp, '='); \ 917 if (valptr == NULL) \ 918 err(1, "syntax error in %s field", (f)); \ 919 errno = 0; \ 920 newval = strtoul(++valptr, NULL, 0); \ 921 if (errno) \ 922 err(1, "syntax error in %s's value", (f)); \ 923 v = newval; \ 924 } \ 925 } while (/*CONSTCOND*/0) 926 927 #ifdef ND6_IFF_IFDISABLED 928 SETFLAG("disabled", ND6_IFF_IFDISABLED); 929 #endif 930 SETFLAG("nud", ND6_IFF_PERFORMNUD); 931 #ifdef ND6_IFF_ACCEPT_RTADV 932 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 933 #endif 934 #ifdef ND6_IFF_PREFER_SOURCE 935 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 936 #endif 937 #ifdef ND6_IFF_DONT_SET_IFROUTE 938 SETFLAG("dont_set_ifroute", ND6_IFF_DONT_SET_IFROUTE); 939 #endif 940 SETVALUE("basereachable", ND.basereachable); 941 SETVALUE("retrans", ND.retrans); 942 SETVALUE("curhlim", ND.chlim); 943 944 ND.flags = newflags; 945 #ifdef SIOCSIFINFO_IN6 946 if (ioctl(s, SIOCSIFINFO_IN6, &nd) < 0) 947 err(1, "ioctl(SIOCSIFINFO_IN6)"); 948 #else 949 if (ioctl(s, SIOCSIFINFO_FLAGS, &nd) < 0) 950 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 951 #endif 952 #undef SETFLAG 953 #undef SETVALUE 954 } 955 956 if (!ND.initialized) 957 errx(1, "%s: not initialized yet", ifname); 958 959 if (ioctl(s, SIOCGIFINFO_IN6, &nd) < 0) 960 err(1, "ioctl(SIOCGIFINFO_IN6)"); 961 (void)printf("linkmtu=%d", ND.linkmtu); 962 (void)printf(", maxmtu=%d", ND.maxmtu); 963 (void)printf(", curhlim=%d", ND.chlim); 964 (void)printf(", basereachable=%ds%dms", 965 ND.basereachable / 1000, ND.basereachable % 1000); 966 (void)printf(", reachable=%ds", ND.reachable); 967 (void)printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 968 #ifdef IPV6CTL_USETEMPADDR 969 (void)memset(nullbuf, 0, sizeof(nullbuf)); 970 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 971 int j; 972 u_int8_t *rbuf; 973 974 for (i = 0; i < 3; i++) { 975 switch (i) { 976 case 0: 977 (void)printf("\nRandom seed(0): "); 978 rbuf = ND.randomseed0; 979 break; 980 case 1: 981 (void)printf("\nRandom seed(1): "); 982 rbuf = ND.randomseed1; 983 break; 984 case 2: 985 (void)printf("\nRandom ID: "); 986 rbuf = ND.randomid; 987 break; 988 default: 989 errx(1, "impossible case for tempaddr display"); 990 } 991 for (j = 0; j < 8; j++) 992 (void)printf("%02x", rbuf[j]); 993 } 994 } 995 #endif 996 if (ND.flags) { 997 (void)printf("\nFlags: "); 998 if ((ND.flags & ND6_IFF_PERFORMNUD)) 999 (void)printf("nud "); 1000 #ifdef ND6_IFF_IFDISABLED 1001 if ((ND.flags & ND6_IFF_IFDISABLED)) 1002 (void)printf("disabled "); 1003 #endif 1004 #ifdef ND6_IFF_ACCEPT_RTADV 1005 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1006 (void)printf("accept_rtadv "); 1007 #endif 1008 #ifdef ND6_IFF_PREFER_SOURCE 1009 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1010 (void)printf("prefer_source "); 1011 #endif 1012 } 1013 (void)putc('\n', stdout); 1014 #undef ND 1015 1016 (void)close(s); 1017 } 1018 1019 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1020 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1021 #endif 1022 1023 static void 1024 rtrlist(void) 1025 { 1026 #ifdef ICMPV6CTL_ND6_DRLIST 1027 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1028 char *buf; 1029 struct in6_defrouter *p, *ep; 1030 size_t l; 1031 struct timeval tim; 1032 1033 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1034 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1035 /*NOTREACHED*/ 1036 } 1037 if (l == 0) 1038 return; 1039 buf = malloc(l); 1040 if (!buf) { 1041 err(1, "malloc"); 1042 /*NOTREACHED*/ 1043 } 1044 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1045 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1046 /*NOTREACHED*/ 1047 } 1048 1049 ep = (struct in6_defrouter *)(void *)(buf + l); 1050 for (p = (struct in6_defrouter *)(void *)buf; p < ep; p++) { 1051 int rtpref; 1052 1053 if (getnameinfo((struct sockaddr *)(void *)&p->rtaddr, 1054 (socklen_t)p->rtaddr.sin6_len, host_buf, sizeof(host_buf), 1055 NULL, 0, (nflag ? NI_NUMERICHOST : 0)) != 0) 1056 (void)strlcpy(host_buf, "?", sizeof(host_buf)); 1057 1058 (void)printf("%s if=%s", host_buf, 1059 if_indextoname((unsigned int)p->if_index, ifix_buf)); 1060 (void)printf(", flags=%s%s", 1061 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1062 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1063 rtpref = ((uint32_t)(p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1064 (void)printf(", pref=%s", rtpref_str[rtpref]); 1065 1066 (void)gettimeofday(&tim, 0); 1067 if (p->expire == 0) 1068 (void)printf(", expire=Never\n"); 1069 else 1070 (void)printf(", expire=%s\n", 1071 sec2str((time_t)(p->expire - tim.tv_sec))); 1072 } 1073 free(buf); 1074 #else 1075 struct in6_drlist dr; 1076 int s, i; 1077 struct timeval time; 1078 1079 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1080 err(1, "socket"); 1081 /* NOTREACHED */ 1082 } 1083 (void)memset(&dr, 0, sizeof(dr)); 1084 (void)strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1085 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1086 err(1, "ioctl(SIOCGDRLST_IN6)"); 1087 /* NOTREACHED */ 1088 } 1089 #define DR dr.defrouter[i] 1090 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1091 struct sockaddr_in6 sin6; 1092 1093 (void)memset(&sin6, 0, sizeof(sin6)); 1094 sin6.sin6_family = AF_INET6; 1095 sin6.sin6_len = sizeof(sin6); 1096 sin6.sin6_addr = DR.rtaddr; 1097 (void)getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 1098 host_buf, sizeof(host_buf), NULL, 0, 1099 (nflag ? NI_NUMERICHOST : 0)); 1100 1101 (void)printf("%s if=%s", host_buf, 1102 if_indextoname(DR.if_index, ifix_buf)); 1103 (void)printf(", flags=%s%s", 1104 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1105 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1106 gettimeofday(&time, 0); 1107 if (DR.expire == 0) 1108 (void)printf(", expire=Never\n"); 1109 else 1110 (void)printf(", expire=%s\n", 1111 sec2str(DR.expire - time.tv_sec)); 1112 } 1113 #undef DR 1114 (void)close(s); 1115 #endif 1116 } 1117 1118 static void 1119 plist(void) 1120 { 1121 #ifdef ICMPV6CTL_ND6_PRLIST 1122 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1123 char *buf; 1124 struct in6_prefix *p, *ep, *n; 1125 struct sockaddr_in6 *advrtr; 1126 size_t l; 1127 struct timeval tim; 1128 const int niflags = NI_NUMERICHOST; 1129 int ninflags = nflag ? NI_NUMERICHOST : 0; 1130 char namebuf[NI_MAXHOST]; 1131 1132 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1133 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1134 /*NOTREACHED*/ 1135 } 1136 buf = malloc(l); 1137 if (!buf) { 1138 err(1, "malloc"); 1139 /*NOTREACHED*/ 1140 } 1141 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1142 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1143 /*NOTREACHED*/ 1144 } 1145 1146 ep = (struct in6_prefix *)(void *)(buf + l); 1147 for (p = (struct in6_prefix *)(void *)buf; p < ep; p = n) { 1148 advrtr = (struct sockaddr_in6 *)(void *)(p + 1); 1149 n = (struct in6_prefix *)(void *)&advrtr[p->advrtrs]; 1150 1151 if (getnameinfo((struct sockaddr *)(void *)&p->prefix, 1152 (socklen_t)p->prefix.sin6_len, namebuf, sizeof(namebuf), 1153 NULL, 0, niflags) != 0) 1154 (void)strlcpy(namebuf, "?", sizeof(namebuf)); 1155 (void)printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1156 if_indextoname((unsigned int)p->if_index, ifix_buf)); 1157 1158 (void)gettimeofday(&tim, 0); 1159 /* 1160 * meaning of fields, especially flags, is very different 1161 * by origin. notify the difference to the users. 1162 */ 1163 (void)printf("flags=%s%s%s%s%s", 1164 p->raflags.onlink ? "L" : "", 1165 p->raflags.autonomous ? "A" : "", 1166 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1167 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1168 #ifdef NDPRF_HOME 1169 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1170 #else 1171 "" 1172 #endif 1173 ); 1174 if (p->vltime == ND6_INFINITE_LIFETIME) 1175 (void)printf(" vltime=infinity"); 1176 else 1177 (void)printf(" vltime=%lu", (unsigned long)p->vltime); 1178 if (p->pltime == ND6_INFINITE_LIFETIME) 1179 (void)printf(", pltime=infinity"); 1180 else 1181 (void)printf(", pltime=%lu", (unsigned long)p->pltime); 1182 if (p->expire == 0) 1183 (void)printf(", expire=Never"); 1184 else if (p->expire >= tim.tv_sec) 1185 (void)printf(", expire=%s", 1186 sec2str(p->expire - tim.tv_sec)); 1187 else 1188 (void)printf(", expired"); 1189 (void)printf(", ref=%d", p->refcnt); 1190 (void)printf("\n"); 1191 /* 1192 * "advertising router" list is meaningful only if the prefix 1193 * information is from RA. 1194 */ 1195 if (p->advrtrs) { 1196 int j; 1197 struct sockaddr_in6 *sin6; 1198 1199 sin6 = advrtr; 1200 (void)printf(" advertised by\n"); 1201 for (j = 0; j < p->advrtrs; j++) { 1202 struct in6_nbrinfo *nbi; 1203 1204 if (getnameinfo((struct sockaddr *)(void *)sin6, 1205 (socklen_t)sin6->sin6_len, namebuf, 1206 sizeof(namebuf), NULL, 0, ninflags) != 0) 1207 (void)strlcpy(namebuf, "?", sizeof(namebuf)); 1208 (void)printf(" %s", namebuf); 1209 1210 nbi = getnbrinfo(&sin6->sin6_addr, 1211 (unsigned int)p->if_index, 0); 1212 if (nbi) { 1213 switch (nbi->state) { 1214 case ND6_LLINFO_REACHABLE: 1215 case ND6_LLINFO_STALE: 1216 case ND6_LLINFO_DELAY: 1217 case ND6_LLINFO_PROBE: 1218 (void)printf(" (reachable)\n"); 1219 break; 1220 default: 1221 (void)printf(" (unreachable)\n"); 1222 } 1223 } else 1224 (void)printf(" (no neighbor state)\n"); 1225 sin6++; 1226 } 1227 } else 1228 (void)printf(" No advertising router\n"); 1229 } 1230 free(buf); 1231 #else 1232 struct in6_prlist pr; 1233 int s, i; 1234 struct timeval time; 1235 1236 (void)gettimeofday(&time, 0); 1237 1238 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1239 err(1, "socket"); 1240 /* NOTREACHED */ 1241 } 1242 (void)memset(&pr, 0, sizeof(pr)); 1243 (void)strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1244 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1245 err(1, "ioctl(SIOCGPRLST_IN6)"); 1246 /* NOTREACHED */ 1247 } 1248 #define PR pr.prefix[i] 1249 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1250 struct sockaddr_in6 p6; 1251 char namebuf[NI_MAXHOST]; 1252 int niflags; 1253 1254 #ifdef NDPRF_ONLINK 1255 p6 = PR.prefix; 1256 #else 1257 (void)memset(&p6, 0, sizeof(p6)); 1258 p6.sin6_family = AF_INET6; 1259 p6.sin6_len = sizeof(p6); 1260 p6.sin6_addr = PR.prefix; 1261 #endif 1262 1263 niflags = NI_NUMERICHOST; 1264 if (getnameinfo((struct sockaddr *)&p6, 1265 sizeof(p6), namebuf, sizeof(namebuf), 1266 NULL, 0, niflags)) { 1267 warnx("getnameinfo failed"); 1268 continue; 1269 } 1270 (void)printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1271 if_indextoname(PR.if_index, ifix_buf)); 1272 1273 (void)gettimeofday(&time, 0); 1274 /* 1275 * meaning of fields, especially flags, is very different 1276 * by origin. notify the difference to the users. 1277 */ 1278 #if 0 1279 (void)printf(" %s", 1280 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1281 #endif 1282 #ifdef NDPRF_ONLINK 1283 (void)printf("flags=%s%s%s%s%s", 1284 PR.raflags.onlink ? "L" : "", 1285 PR.raflags.autonomous ? "A" : "", 1286 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1287 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1288 #ifdef NDPRF_HOME 1289 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1290 #else 1291 "" 1292 #endif 1293 ); 1294 #else 1295 (void)printf("flags=%s%s", 1296 PR.raflags.onlink ? "L" : "", 1297 PR.raflags.autonomous ? "A" : ""); 1298 #endif 1299 if (PR.vltime == ND6_INFINITE_LIFETIME) 1300 (void)printf(" vltime=infinity"); 1301 else 1302 (void)printf(" vltime=%lu", PR.vltime); 1303 if (PR.pltime == ND6_INFINITE_LIFETIME) 1304 (void)printf(", pltime=infinity"); 1305 else 1306 (void)printf(", pltime=%lu", PR.pltime); 1307 if (PR.expire == 0) 1308 (void)printf(", expire=Never"); 1309 else if (PR.expire >= time.tv_sec) 1310 (void)printf(", expire=%s", 1311 sec2str(PR.expire - time.tv_sec)); 1312 else 1313 (void)printf(", expired"); 1314 #ifdef NDPRF_ONLINK 1315 (void)printf(", ref=%d", PR.refcnt); 1316 #endif 1317 #if 0 1318 switch (PR.origin) { 1319 case PR_ORIG_RA: 1320 (void)printf(", origin=RA"); 1321 break; 1322 case PR_ORIG_RR: 1323 (void)printf(", origin=RR"); 1324 break; 1325 case PR_ORIG_STATIC: 1326 (void)printf(", origin=static"); 1327 break; 1328 case PR_ORIG_KERNEL: 1329 (void)printf(", origin=kernel"); 1330 break; 1331 default: 1332 (void)printf(", origin=?"); 1333 break; 1334 } 1335 #endif 1336 (void)printf("\n"); 1337 /* 1338 * "advertising router" list is meaningful only if the prefix 1339 * information is from RA. 1340 */ 1341 if (0 && /* prefix origin is almost obsolted */ 1342 PR.origin != PR_ORIG_RA) 1343 ; 1344 else if (PR.advrtrs) { 1345 int j; 1346 (void)printf(" advertised by\n"); 1347 for (j = 0; j < PR.advrtrs; j++) { 1348 struct sockaddr_in6 sin6; 1349 struct in6_nbrinfo *nbi; 1350 1351 bzero(&sin6, sizeof(sin6)); 1352 sin6.sin6_family = AF_INET6; 1353 sin6.sin6_len = sizeof(sin6); 1354 sin6.sin6_addr = PR.advrtr[j]; 1355 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1356 (void)getnameinfo((struct sockaddr *)&sin6, 1357 sin6.sin6_len, host_buf, 1358 sizeof(host_buf), NULL, 0, 1359 (nflag ? NI_NUMERICHOST : 0)); 1360 (void)printf(" %s", host_buf); 1361 1362 nbi = getnbrinfo(&sin6.sin6_addr, 1363 PR.if_index, 0); 1364 if (nbi) { 1365 switch (nbi->state) { 1366 case ND6_LLINFO_REACHABLE: 1367 case ND6_LLINFO_STALE: 1368 case ND6_LLINFO_DELAY: 1369 case ND6_LLINFO_PROBE: 1370 (void)printf(" (reachable)\n"); 1371 break; 1372 default: 1373 (void)printf(" (unreachable)\n"); 1374 } 1375 } else 1376 (void)printf(" (no neighbor state)\n"); 1377 } 1378 if (PR.advrtrs > DRLSTSIZ) 1379 (void)printf(" and %d routers\n", 1380 PR.advrtrs - DRLSTSIZ); 1381 } else 1382 (void)printf(" No advertising router\n"); 1383 } 1384 #undef PR 1385 (void)close(s); 1386 #endif 1387 } 1388 1389 static void 1390 pfx_flush(void) 1391 { 1392 char dummyif[IFNAMSIZ+8]; 1393 int s; 1394 1395 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1396 err(1, "socket"); 1397 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1398 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1399 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1400 (void)close(s); 1401 } 1402 1403 static void 1404 rtr_flush(void) 1405 { 1406 char dummyif[IFNAMSIZ+8]; 1407 int s; 1408 1409 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1410 err(1, "socket"); 1411 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1412 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1413 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1414 1415 (void)close(s); 1416 } 1417 1418 static void 1419 harmonize_rtr(void) 1420 { 1421 char dummyif[IFNAMSIZ+8]; 1422 int s; 1423 1424 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1425 err(1, "socket"); 1426 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1427 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1428 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1429 1430 (void)close(s); 1431 } 1432 1433 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1434 static void 1435 setdefif(char *ifname) 1436 { 1437 struct in6_ndifreq ndifreq; 1438 unsigned int ifindex; 1439 int s; 1440 1441 if (strcasecmp(ifname, "delete") == 0) 1442 ifindex = 0; 1443 else { 1444 if ((ifindex = if_nametoindex(ifname)) == 0) 1445 err(1, "failed to resolve i/f index for %s", ifname); 1446 } 1447 1448 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1449 err(1, "socket"); 1450 1451 (void)strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1452 ndifreq.ifindex = ifindex; 1453 1454 if (ioctl(s, SIOCSDEFIFACE_IN6, &ndifreq) < 0) 1455 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1456 1457 (void)close(s); 1458 } 1459 1460 static void 1461 getdefif(void) 1462 { 1463 struct in6_ndifreq ndifreq; 1464 char ifname[IFNAMSIZ+8]; 1465 int s; 1466 1467 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1468 err(1, "socket"); 1469 1470 (void)memset(&ndifreq, 0, sizeof(ndifreq)); 1471 (void)strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1472 1473 if (ioctl(s, SIOCGDEFIFACE_IN6, &ndifreq) < 0) 1474 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1475 1476 if (ndifreq.ifindex == 0) 1477 (void)printf("No default interface.\n"); 1478 else { 1479 if ((if_indextoname((unsigned int)ndifreq.ifindex, ifname)) == NULL) 1480 err(1, "failed to resolve ifname for index %lu", 1481 ndifreq.ifindex); 1482 (void)printf("ND default interface = %s\n", ifname); 1483 } 1484 1485 (void)close(s); 1486 } 1487 #endif 1488 1489 static const char * 1490 sec2str(time_t total) 1491 { 1492 static char result[256]; 1493 int days, hours, mins, secs; 1494 int first = 1; 1495 char *p = result; 1496 char *ep = &result[sizeof(result)]; 1497 int n; 1498 1499 days = total / 3600 / 24; 1500 hours = (total / 3600) % 24; 1501 mins = (total / 60) % 60; 1502 secs = total % 60; 1503 1504 if (days) { 1505 first = 0; 1506 n = snprintf(p, (size_t)(ep - p), "%dd", days); 1507 if (n < 0 || n >= ep - p) 1508 return "?"; 1509 p += n; 1510 } 1511 if (!first || hours) { 1512 first = 0; 1513 n = snprintf(p, (size_t)(ep - p), "%dh", hours); 1514 if (n < 0 || n >= ep - p) 1515 return "?"; 1516 p += n; 1517 } 1518 if (!first || mins) { 1519 first = 0; 1520 n = snprintf(p, (size_t)(ep - p), "%dm", mins); 1521 if (n < 0 || n >= ep - p) 1522 return "?"; 1523 p += n; 1524 } 1525 (void)snprintf(p, (size_t)(ep - p), "%ds", secs); 1526 1527 return(result); 1528 } 1529 1530 /* 1531 * Print the timestamp 1532 * from tcpdump/util.c 1533 */ 1534 static void 1535 ts_print(const struct timeval *tvp) 1536 { 1537 int s; 1538 1539 /* Default */ 1540 s = (tvp->tv_sec + thiszone) % 86400; 1541 (void)printf("%02d:%02d:%02d.%06u ", 1542 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1543 } 1544
Indexes created Sun Sep 28 07:09:56 GMT 2025