ndp.c revision 1.38
1 /* $NetBSD: ndp.c,v 1.38 2009/11/06 20:51:19 dyoung 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 "gmt2local.h" 108 109 /* packing rule for routing socket */ 110 #define ROUNDUP(a) \ 111 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 112 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 113 114 static pid_t pid; 115 static int nflag; 116 static int tflag; 117 static int32_t thiszone; /* time difference with gmt */ 118 static int my_s = -1; 119 static unsigned int repeat = 0; 120 121 122 static char host_buf[NI_MAXHOST]; /* getnameinfo() */ 123 static char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 124 125 static void getsocket(void); 126 static int set(int, char **); 127 static void get(char *); 128 static int delete(char *); 129 static void dump(struct in6_addr *, int); 130 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *, unsigned int, int); 131 static char *ether_str(struct sockaddr_dl *); 132 static int ndp_ether_aton(char *, u_char *); 133 static void usage(void); 134 static int rtmsg(int); 135 static void ifinfo(char *, int, char **); 136 static void rtrlist(void); 137 static void plist(void); 138 static void pfx_flush(void); 139 static void rtrlist(void); 140 static void rtr_flush(void); 141 static void harmonize_rtr(void); 142 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 143 static void getdefif(void); 144 static void setdefif(char *); 145 #endif 146 static const char *sec2str(time_t); 147 static char *ether_str(struct sockaddr_dl *); 148 static void ts_print(const struct timeval *); 149 150 #ifdef ICMPV6CTL_ND6_DRLIST 151 static const char *rtpref_str[] = { 152 "medium", /* 00 */ 153 "high", /* 01 */ 154 "rsv", /* 10 */ 155 "low" /* 11 */ 156 }; 157 #endif 158 159 static int mode = 0; 160 static char *arg = NULL; 161 162 int 163 main(int argc, char **argv) 164 { 165 int ch; 166 167 pid = getpid(); 168 thiszone = gmt2local(0L); 169 while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 170 switch (ch) { 171 case 'a': 172 case 'c': 173 case 'p': 174 case 'r': 175 case 'H': 176 case 'P': 177 case 'R': 178 case 's': 179 case 'I': 180 if (mode) { 181 usage(); 182 /*NOTREACHED*/ 183 } 184 mode = ch; 185 arg = NULL; 186 break; 187 case 'd': 188 case 'f': 189 case 'i' : 190 if (mode) { 191 usage(); 192 /*NOTREACHED*/ 193 } 194 mode = ch; 195 arg = optarg; 196 break; 197 case 'n': 198 nflag = 1; 199 break; 200 case 't': 201 tflag = 1; 202 break; 203 case 'A': 204 if (mode) { 205 usage(); 206 /*NOTREACHED*/ 207 } 208 mode = 'a'; 209 repeat = atoi(optarg); 210 break; 211 default: 212 usage(); 213 } 214 215 argc -= optind; 216 argv += optind; 217 218 switch (mode) { 219 case 'a': 220 case 'c': 221 if (argc != 0) { 222 usage(); 223 /*NOTREACHED*/ 224 } 225 dump(0, mode == 'c'); 226 break; 227 case 'd': 228 if (argc != 0) { 229 usage(); 230 /*NOTREACHED*/ 231 } 232 (void)delete(arg); 233 break; 234 case 'I': 235 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 236 if (argc > 1) { 237 usage(); 238 /*NOTREACHED*/ 239 } else if (argc == 1) { 240 if (strcmp(*argv, "delete") == 0 || 241 if_nametoindex(*argv)) 242 setdefif(*argv); 243 else 244 errx(1, "invalid interface %s", *argv); 245 } 246 getdefif(); /* always call it to print the result */ 247 break; 248 #else 249 errx(1, "not supported yet"); 250 /*NOTREACHED*/ 251 #endif 252 case 'p': 253 if (argc != 0) { 254 usage(); 255 /*NOTREACHED*/ 256 } 257 plist(); 258 break; 259 case 'i': 260 ifinfo(arg, argc, argv); 261 break; 262 case 'r': 263 if (argc != 0) { 264 usage(); 265 /*NOTREACHED*/ 266 } 267 rtrlist(); 268 break; 269 case 's': 270 if (argc < 2 || argc > 4) 271 usage(); 272 return(set(argc, argv) ? 1 : 0); 273 case 'H': 274 if (argc != 0) { 275 usage(); 276 /*NOTREACHED*/ 277 } 278 harmonize_rtr(); 279 break; 280 case 'P': 281 if (argc != 0) { 282 usage(); 283 /*NOTREACHED*/ 284 } 285 pfx_flush(); 286 break; 287 case 'R': 288 if (argc != 0) { 289 usage(); 290 /*NOTREACHED*/ 291 } 292 rtr_flush(); 293 break; 294 case 0: 295 if (argc != 1) { 296 usage(); 297 /*NOTREACHED*/ 298 } 299 get(argv[0]); 300 break; 301 } 302 return(0); 303 } 304 305 static void 306 getsocket(void) 307 { 308 if (my_s < 0) { 309 my_s = socket(PF_ROUTE, SOCK_RAW, 0); 310 if (my_s < 0) 311 err(1, "socket"); 312 } 313 } 314 315 #ifdef notdef 316 static struct sockaddr_in6 so_mask = { 317 .sin6_len = sizeof(so_mask), 318 .sin6_family = AF_INET6 319 }; 320 #endif 321 static struct sockaddr_in6 blank_sin = { 322 .sin6_len = sizeof(blank_sin), 323 .sin6_family = AF_INET6 324 }; 325 static struct sockaddr_in6 sin_m; 326 static struct sockaddr_dl blank_sdl = { 327 .sdl_len = sizeof(blank_sdl), 328 .sdl_family = AF_LINK, 329 }; 330 static struct sockaddr_dl sdl_m; 331 static int expire_time, flags, found_entry; 332 static struct { 333 struct rt_msghdr m_rtm; 334 char m_space[512]; 335 } m_rtmsg; 336 337 /* 338 * Set an individual neighbor cache entry 339 */ 340 static int 341 set(int argc, char **argv) 342 { 343 register struct sockaddr_in6 *mysin = &sin_m; 344 register struct sockaddr_dl *sdl; 345 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 346 struct addrinfo hints, *res; 347 int gai_error; 348 u_char *ea; 349 char *host = argv[0], *eaddr = argv[1]; 350 351 getsocket(); 352 argc -= 2; 353 argv += 2; 354 sdl_m = blank_sdl; 355 sin_m = blank_sin; 356 357 (void)memset(&hints, 0, sizeof(hints)); 358 hints.ai_family = AF_INET6; 359 gai_error = getaddrinfo(host, NULL, &hints, &res); 360 if (gai_error) { 361 warnx("%s: %s\n", host, gai_strerror(gai_error)); 362 return 1; 363 } 364 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 365 #ifdef __KAME__ 366 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr)) { 367 *(u_int16_t *)(void *)&mysin->sin6_addr.s6_addr[2] = 368 htons(((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_scope_id); 369 } 370 #endif 371 ea = (u_char *)LLADDR(&sdl_m); 372 if (ndp_ether_aton(eaddr, ea) == 0) 373 sdl_m.sdl_alen = 6; 374 flags = expire_time = 0; 375 while (argc-- > 0) { 376 if (strncmp(argv[0], "temp", 4) == 0) { 377 struct timeval tim; 378 379 (void)gettimeofday(&tim, 0); 380 expire_time = tim.tv_sec + 20 * 60; 381 } else if (strncmp(argv[0], "proxy", 5) == 0) 382 flags |= RTF_ANNOUNCE; 383 argv++; 384 } 385 if (rtmsg(RTM_GET) < 0) { 386 errx(1, "RTM_GET(%s) failed", host); 387 /* NOTREACHED */ 388 } 389 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 390 sdl = (struct sockaddr_dl *)(void *)(ROUNDUP(mysin->sin6_len) + (char *)(void *)mysin); 391 if (IN6_ARE_ADDR_EQUAL(&mysin->sin6_addr, &sin_m.sin6_addr)) { 392 if (sdl->sdl_family == AF_LINK && 393 (rtm->rtm_flags & RTF_LLINFO) && 394 !(rtm->rtm_flags & RTF_GATEWAY)) { 395 switch (sdl->sdl_type) { 396 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 397 case IFT_ISO88024: case IFT_ISO88025: 398 goto overwrite; 399 } 400 } 401 /* 402 * IPv4 arp command retries with sin_other = SIN_PROXY here. 403 */ 404 (void)fprintf(stderr, "set: cannot configure a new entry\n"); 405 return 1; 406 } 407 408 overwrite: 409 if (sdl->sdl_family != AF_LINK) { 410 warnx("cannot intuit interface index and type for %s", host); 411 return (1); 412 } 413 sdl_m.sdl_type = sdl->sdl_type; 414 sdl_m.sdl_index = sdl->sdl_index; 415 return (rtmsg(RTM_ADD)); 416 } 417 418 /* 419 * Display an individual neighbor cache entry 420 */ 421 static void 422 get(char *host) 423 { 424 struct sockaddr_in6 *mysin = &sin_m; 425 struct addrinfo hints, *res; 426 int gai_error; 427 428 sin_m = blank_sin; 429 (void)memset(&hints, 0, sizeof(hints)); 430 hints.ai_family = AF_INET6; 431 gai_error = getaddrinfo(host, NULL, &hints, &res); 432 if (gai_error) { 433 warnx("%s: %s\n", host, gai_strerror(gai_error)); 434 return; 435 } 436 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 437 #ifdef __KAME__ 438 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr)) { 439 *(u_int16_t *)(void *)&mysin->sin6_addr.s6_addr[2] = 440 htons(((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_scope_id); 441 } 442 #endif 443 dump(&mysin->sin6_addr, 0); 444 if (found_entry == 0) { 445 (void)getnameinfo((struct sockaddr *)(void *)mysin, 446 (socklen_t)mysin->sin6_len, 447 host_buf, sizeof(host_buf), NULL ,0, 448 (nflag ? NI_NUMERICHOST : 0)); 449 errx(1, "%s (%s) -- no entry", host, host_buf); 450 } 451 } 452 453 /* 454 * Delete a neighbor cache entry 455 */ 456 static int 457 delete(char *host) 458 { 459 struct sockaddr_in6 *mysin = &sin_m; 460 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 461 struct sockaddr_dl *sdl; 462 struct addrinfo hints, *res; 463 int gai_error; 464 465 getsocket(); 466 sin_m = blank_sin; 467 468 bzero(&hints, sizeof(hints)); 469 hints.ai_family = AF_INET6; 470 gai_error = getaddrinfo(host, NULL, &hints, &res); 471 if (gai_error) { 472 warnx("%s: %s\n", host, gai_strerror(gai_error)); 473 return 1; 474 } 475 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 476 #ifdef __KAME__ 477 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr)) { 478 *(u_int16_t *)(void *)&mysin->sin6_addr.s6_addr[2] = 479 htons(((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_scope_id); 480 } 481 #endif 482 if (rtmsg(RTM_GET) < 0) 483 errx(1, "RTM_GET(%s) failed", host); 484 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 485 sdl = (struct sockaddr_dl *)(void *)(ROUNDUP(mysin->sin6_len) + 486 (char *)(void *)mysin); 487 if (IN6_ARE_ADDR_EQUAL(&mysin->sin6_addr, &sin_m.sin6_addr)) { 488 if (sdl->sdl_family == AF_LINK && 489 (rtm->rtm_flags & RTF_LLINFO) && 490 !(rtm->rtm_flags & RTF_GATEWAY)) { 491 goto delete; 492 } 493 /* 494 * IPv4 arp command retries with sin_other = SIN_PROXY here. 495 */ 496 warnx("delete: cannot delete non-NDP entry"); 497 return 1; 498 } 499 500 delete: 501 if (sdl->sdl_family != AF_LINK) { 502 (void)printf("cannot locate %s\n", host); 503 return (1); 504 } 505 if (rtmsg(RTM_DELETE) == 0) { 506 struct sockaddr_in6 s6 = *mysin; /* XXX: for safety */ 507 508 #ifdef __KAME__ 509 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 510 s6.sin6_scope_id = ntohs(*(u_int16_t *)(void *)&s6.sin6_addr.s6_addr[2]); 511 *(u_int16_t *)(void *)&s6.sin6_addr.s6_addr[2] = 0; 512 } 513 #endif 514 (void)getnameinfo((struct sockaddr *)(void *)&s6, 515 (socklen_t)s6.sin6_len, host_buf, 516 sizeof(host_buf), NULL, 0, 517 (nflag ? NI_NUMERICHOST : 0)); 518 (void)printf("%s (%s) deleted\n", host, host_buf); 519 } 520 521 return 0; 522 } 523 524 #define W_ADDR 36 525 #define W_LL 17 526 #define W_IF 6 527 528 /* 529 * Dump the entire neighbor cache 530 */ 531 static void 532 dump(struct in6_addr *addr, int cflag) 533 { 534 int mib[6]; 535 size_t needed; 536 char *lim, *buf, *next; 537 struct rt_msghdr *rtm; 538 struct sockaddr_in6 *mysin; 539 struct sockaddr_dl *sdl; 540 struct in6_nbrinfo *nbi; 541 struct timeval tim; 542 int addrwidth; 543 int llwidth; 544 int ifwidth; 545 char flgbuf[8]; 546 const char *ifname; 547 548 /* Print header */ 549 if (!tflag && !cflag) 550 (void)printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 551 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 552 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 553 554 again:; 555 mib[0] = CTL_NET; 556 mib[1] = PF_ROUTE; 557 mib[2] = 0; 558 mib[3] = AF_INET6; 559 mib[4] = NET_RT_FLAGS; 560 mib[5] = RTF_LLINFO; 561 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 562 err(1, "sysctl(PF_ROUTE estimate)"); 563 if (needed > 0) { 564 if ((buf = malloc(needed)) == NULL) 565 err(1, "malloc"); 566 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 567 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 568 lim = buf + needed; 569 } else 570 buf = lim = NULL; 571 572 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 573 int isrouter = 0, prbs = 0; 574 575 rtm = (struct rt_msghdr *)(void *)next; 576 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 577 sdl = (struct sockaddr_dl *)(void *)((char *)(void *)mysin + ROUNDUP(mysin->sin6_len)); 578 579 /* 580 * Some OSes can produce a route that has the LINK flag but 581 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 582 * and BSD/OS, where xx is not the interface identifier on 583 * lo0). Such routes entry would annoy getnbrinfo() below, 584 * so we skip them. 585 * XXX: such routes should have the GATEWAY flag, not the 586 * LINK flag. However, there is rotten routing software 587 * that advertises all routes that have the GATEWAY flag. 588 * Thus, KAME kernel intentionally does not set the LINK flag. 589 * What is to be fixed is not ndp, but such routing software 590 * (and the kernel workaround)... 591 */ 592 if (sdl->sdl_family != AF_LINK) 593 continue; 594 595 if (!(rtm->rtm_flags & RTF_HOST)) 596 continue; 597 598 if (addr) { 599 if (!IN6_ARE_ADDR_EQUAL(addr, &mysin->sin6_addr)) 600 continue; 601 found_entry = 1; 602 } else if (IN6_IS_ADDR_MULTICAST(&mysin->sin6_addr)) 603 continue; 604 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr) || 605 IN6_IS_ADDR_MC_LINKLOCAL(&mysin->sin6_addr)) { 606 /* XXX: should scope id be filled in the kernel? */ 607 if (mysin->sin6_scope_id == 0) 608 mysin->sin6_scope_id = sdl->sdl_index; 609 #ifdef __KAME__ 610 /* KAME specific hack; removed the embedded id */ 611 *(u_int16_t *)(void *)&mysin->sin6_addr.s6_addr[2] = 0; 612 #endif 613 } 614 (void)getnameinfo((struct sockaddr *)(void *)mysin, 615 (socklen_t)mysin->sin6_len, 616 host_buf, sizeof(host_buf), NULL, 0, 617 (nflag ? NI_NUMERICHOST : 0)); 618 if (cflag) { 619 #ifdef RTF_WASCLONED 620 if (rtm->rtm_flags & RTF_WASCLONED) 621 (void)delete(host_buf); 622 #elif defined(RTF_CLONED) 623 if (rtm->rtm_flags & RTF_CLONED) 624 (void)delete(host_buf); 625 #else 626 (void)delete(host_buf); 627 #endif 628 continue; 629 } 630 (void)gettimeofday(&tim, 0); 631 if (tflag) 632 ts_print(&tim); 633 634 addrwidth = strlen(host_buf); 635 if (addrwidth < W_ADDR) 636 addrwidth = W_ADDR; 637 llwidth = strlen(ether_str(sdl)); 638 if (W_ADDR + W_LL - addrwidth > llwidth) 639 llwidth = W_ADDR + W_LL - addrwidth; 640 ifname = if_indextoname((unsigned int)sdl->sdl_index, ifix_buf); 641 if (!ifname) 642 ifname = "?"; 643 ifwidth = strlen(ifname); 644 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 645 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 646 647 (void)printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, 648 host_buf, llwidth, llwidth, ether_str(sdl), ifwidth, 649 ifwidth, ifname); 650 651 /* Print neighbor discovery specific informations */ 652 nbi = getnbrinfo(&mysin->sin6_addr, 653 (unsigned int)sdl->sdl_index, 1); 654 if (nbi) { 655 if (nbi->expire > tim.tv_sec) { 656 (void)printf(" %-9.9s", 657 sec2str(nbi->expire - tim.tv_sec)); 658 } else if (nbi->expire == 0) 659 (void)printf(" %-9.9s", "permanent"); 660 else 661 (void)printf(" %-9.9s", "expired"); 662 663 switch (nbi->state) { 664 case ND6_LLINFO_NOSTATE: 665 (void)printf(" N"); 666 break; 667 #ifdef ND6_LLINFO_WAITDELETE 668 case ND6_LLINFO_WAITDELETE: 669 (void)printf(" W"); 670 break; 671 #endif 672 case ND6_LLINFO_INCOMPLETE: 673 (void)printf(" I"); 674 break; 675 case ND6_LLINFO_REACHABLE: 676 (void)printf(" R"); 677 break; 678 case ND6_LLINFO_STALE: 679 (void)printf(" S"); 680 break; 681 case ND6_LLINFO_DELAY: 682 (void)printf(" D"); 683 break; 684 case ND6_LLINFO_PROBE: 685 (void)printf(" P"); 686 break; 687 default: 688 (void)printf(" ?"); 689 break; 690 } 691 692 isrouter = nbi->isrouter; 693 prbs = nbi->asked; 694 } else { 695 warnx("failed to get neighbor information"); 696 (void)printf(" "); 697 } 698 699 /* 700 * other flags. R: router, P: proxy, W: ?? 701 */ 702 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 703 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s", 704 isrouter ? "R" : "", 705 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 706 } else { 707 mysin = (struct sockaddr_in6 *)(void *) 708 (sdl->sdl_len + (char *)(void *)sdl); 709 #if 0 /* W and P are mystery even for us */ 710 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 711 isrouter ? "R" : "", 712 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 713 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 714 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 715 #else 716 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s", 717 isrouter ? "R" : "", 718 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 719 #endif 720 } 721 (void)printf(" %s", flgbuf); 722 723 if (prbs) 724 (void)printf(" %d", prbs); 725 726 (void)printf("\n"); 727 } 728 if (buf != NULL) 729 free(buf); 730 731 if (repeat) { 732 (void)printf("\n"); 733 (void)fflush(stdout); 734 (void)sleep(repeat); 735 goto again; 736 } 737 } 738 739 static struct in6_nbrinfo * 740 getnbrinfo(struct in6_addr *addr, unsigned int ifindex, int warning) 741 { 742 static struct in6_nbrinfo nbi; 743 int s; 744 745 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 746 err(1, "socket"); 747 748 (void)memset(&nbi, 0, sizeof(nbi)); 749 (void)if_indextoname(ifindex, nbi.ifname); 750 nbi.addr = *addr; 751 if (ioctl(s, SIOCGNBRINFO_IN6, &nbi) < 0) { 752 if (warning) 753 warn("ioctl(SIOCGNBRINFO_IN6)"); 754 (void)close(s); 755 return(NULL); 756 } 757 758 (void)close(s); 759 return(&nbi); 760 } 761 762 static char * 763 ether_str(struct sockaddr_dl *sdl) 764 { 765 static char hbuf[NI_MAXHOST]; 766 767 if (sdl->sdl_alen) { 768 if (getnameinfo((struct sockaddr *)(void *)sdl, 769 (socklen_t)sdl->sdl_len, 770 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) 771 (void)snprintf(hbuf, sizeof(hbuf), "<invalid>"); 772 } else 773 (void)snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 774 775 return(hbuf); 776 } 777 778 static int 779 ndp_ether_aton(char *a, u_char *n) 780 { 781 int i, o[6]; 782 783 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 784 &o[3], &o[4], &o[5]); 785 if (i != 6) { 786 warnx("invalid Ethernet address '%s'", a); 787 return (1); 788 } 789 for (i = 0; i < 6; i++) 790 n[i] = o[i]; 791 return (0); 792 } 793 794 static void 795 usage(void) 796 { 797 const char *pn = getprogname(); 798 799 (void)fprintf(stderr, "Usage: %s [-nt] hostname\n", pn); 800 (void)fprintf(stderr, 801 " %s [-nt] -a | -c | -p | -r | -H | -P | -R\n", pn); 802 (void)fprintf(stderr, " %s [-nt] -A wait\n", pn); 803 (void)fprintf(stderr, " %s [-nt] -d hostname\n", pn); 804 (void)fprintf(stderr, " %s [-nt] -f filename\n", pn); 805 (void)fprintf(stderr, " %s [-nt] -i interface [flags...]\n", pn); 806 #ifdef SIOCSDEFIFACE_IN6 807 (void)fprintf(stderr, " %s [-nt] -I [interface|delete]\n", pn); 808 #endif 809 (void)fprintf(stderr, 810 " %s [-nt] -s nodename etheraddr [temp] [proxy]\n", pn); 811 exit(1); 812 } 813 814 static int 815 rtmsg(int cmd) 816 { 817 static int seq; 818 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 819 register char *cp = m_rtmsg.m_space; 820 register int l; 821 822 errno = 0; 823 if (cmd == RTM_DELETE) 824 goto doit; 825 (void)memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 826 rtm->rtm_flags = flags; 827 rtm->rtm_version = RTM_VERSION; 828 829 switch (cmd) { 830 default: 831 errx(1, "internal wrong cmd"); 832 /*NOTREACHED*/ 833 case RTM_ADD: 834 rtm->rtm_addrs |= RTA_GATEWAY; 835 if (expire_time) { 836 rtm->rtm_rmx.rmx_expire = expire_time; 837 rtm->rtm_inits = RTV_EXPIRE; 838 } 839 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 840 #ifdef notdef /* we don't support ipv6addr/128 type proxying. */ 841 if (rtm->rtm_flags & RTF_ANNOUNCE) { 842 rtm->rtm_flags &= ~RTF_HOST; 843 rtm->rtm_addrs |= RTA_NETMASK; 844 } 845 #endif 846 /* FALLTHROUGH */ 847 case RTM_GET: 848 rtm->rtm_addrs |= RTA_DST; 849 } 850 #define NEXTADDR(w, s) \ 851 if (rtm->rtm_addrs & (w)) { \ 852 (void)memcpy(cp, &s, sizeof(s)); \ 853 ADVANCE(cp, (struct sockaddr *)(void *)&s); \ 854 } 855 856 NEXTADDR(RTA_DST, sin_m); 857 NEXTADDR(RTA_GATEWAY, sdl_m); 858 #ifdef notdef /* we don't support ipv6addr/128 type proxying. */ 859 (void)memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 860 NEXTADDR(RTA_NETMASK, so_mask); 861 #endif 862 863 rtm->rtm_msglen = cp - (char *)(void *)&m_rtmsg; 864 doit: 865 l = rtm->rtm_msglen; 866 rtm->rtm_seq = ++seq; 867 rtm->rtm_type = cmd; 868 if (write(my_s, &m_rtmsg, (size_t)l) == -1) { 869 if (errno != ESRCH || cmd != RTM_DELETE) 870 err(1, "writing to routing socket"); 871 } 872 do { 873 l = read(my_s, &m_rtmsg, sizeof(m_rtmsg)); 874 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 875 if (l < 0) 876 warn("read from routing socket"); 877 return (0); 878 } 879 880 static void 881 ifinfo(char *ifname, int argc, char **argv) 882 { 883 struct in6_ndireq nd; 884 int i, s; 885 u_int32_t newflags; 886 #ifdef IPV6CTL_USETEMPADDR 887 u_int8_t nullbuf[8]; 888 #endif 889 890 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 891 err(1, "socket"); 892 (void)memset(&nd, 0, sizeof(nd)); 893 (void)strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 894 if (ioctl(s, SIOCGIFINFO_IN6, &nd) < 0) 895 err(1, "ioctl(SIOCGIFINFO_IN6)"); 896 #define ND nd.ndi 897 newflags = ND.flags; 898 for (i = 0; i < argc; i++) { 899 int clear = 0; 900 char *cp = argv[i]; 901 902 if (*cp == '-') { 903 clear = 1; 904 cp++; 905 } 906 907 #define SETFLAG(s, f) \ 908 do {\ 909 if (strcmp(cp, (s)) == 0) {\ 910 if (clear)\ 911 newflags &= ~(f);\ 912 else\ 913 newflags |= (f);\ 914 }\ 915 } while (/*CONSTCOND*/0) 916 /* 917 * XXX: this macro is not 100% correct, in that it matches "nud" against 918 * "nudbogus". But we just let it go since this is minor. 919 */ 920 #define SETVALUE(f, v) \ 921 do { \ 922 char *valptr; \ 923 unsigned long newval; \ 924 v = 0; /* unspecified */ \ 925 if (strncmp(cp, f, strlen(f)) == 0) { \ 926 valptr = strchr(cp, '='); \ 927 if (valptr == NULL) \ 928 err(1, "syntax error in %s field", (f)); \ 929 errno = 0; \ 930 newval = strtoul(++valptr, NULL, 0); \ 931 if (errno) \ 932 err(1, "syntax error in %s's value", (f)); \ 933 v = newval; \ 934 } \ 935 } while (/*CONSTCOND*/0) 936 937 #ifdef ND6_IFF_IFDISABLED 938 SETFLAG("disabled", ND6_IFF_IFDISABLED); 939 #endif 940 SETFLAG("nud", ND6_IFF_PERFORMNUD); 941 #ifdef ND6_IFF_ACCEPT_RTADV 942 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 943 #endif 944 #ifdef ND6_IFF_OVERRIDE_RTADV 945 SETFLAG("override_rtadv", ND6_IFF_OVERRIDE_RTADV); 946 #endif 947 #ifdef ND6_IFF_PREFER_SOURCE 948 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 949 #endif 950 #ifdef ND6_IFF_DONT_SET_IFROUTE 951 SETFLAG("dont_set_ifroute", ND6_IFF_DONT_SET_IFROUTE); 952 #endif 953 SETVALUE("basereachable", ND.basereachable); 954 SETVALUE("retrans", ND.retrans); 955 SETVALUE("curhlim", ND.chlim); 956 957 ND.flags = newflags; 958 #ifdef SIOCSIFINFO_IN6 959 if (ioctl(s, SIOCSIFINFO_IN6, &nd) < 0) 960 err(1, "ioctl(SIOCSIFINFO_IN6)"); 961 #else 962 if (ioctl(s, SIOCSIFINFO_FLAGS, &nd) < 0) 963 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 964 #endif 965 #undef SETFLAG 966 #undef SETVALUE 967 } 968 969 if (!ND.initialized) 970 errx(1, "%s: not initialized yet", ifname); 971 972 if (ioctl(s, SIOCGIFINFO_IN6, &nd) < 0) 973 err(1, "ioctl(SIOCGIFINFO_IN6)"); 974 (void)printf("linkmtu=%d", ND.linkmtu); 975 (void)printf(", maxmtu=%d", ND.maxmtu); 976 (void)printf(", curhlim=%d", ND.chlim); 977 (void)printf(", basereachable=%ds%dms", 978 ND.basereachable / 1000, ND.basereachable % 1000); 979 (void)printf(", reachable=%ds", ND.reachable); 980 (void)printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 981 #ifdef IPV6CTL_USETEMPADDR 982 (void)memset(nullbuf, 0, sizeof(nullbuf)); 983 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 984 int j; 985 u_int8_t *rbuf; 986 987 for (i = 0; i < 3; i++) { 988 switch (i) { 989 case 0: 990 (void)printf("\nRandom seed(0): "); 991 rbuf = ND.randomseed0; 992 break; 993 case 1: 994 (void)printf("\nRandom seed(1): "); 995 rbuf = ND.randomseed1; 996 break; 997 case 2: 998 (void)printf("\nRandom ID: "); 999 rbuf = ND.randomid; 1000 break; 1001 default: 1002 errx(1, "impossible case for tempaddr display"); 1003 } 1004 for (j = 0; j < 8; j++) 1005 (void)printf("%02x", rbuf[j]); 1006 } 1007 } 1008 #endif 1009 if (ND.flags) { 1010 (void)printf("\nFlags: "); 1011 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1012 (void)printf("nud "); 1013 #ifdef ND6_IFF_IFDISABLED 1014 if ((ND.flags & ND6_IFF_IFDISABLED)) 1015 (void)printf("disabled "); 1016 #endif 1017 #ifdef ND6_IFF_ACCEPT_RTADV 1018 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1019 (void)printf("accept_rtadv "); 1020 #endif 1021 #ifdef ND6_IFF_OVERRIDE_RTADV 1022 if ((ND.flags & ND6_IFF_OVERRIDE_RTADV)) 1023 (void)printf("override_rtadv "); 1024 #endif 1025 #ifdef ND6_IFF_PREFER_SOURCE 1026 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1027 (void)printf("prefer_source "); 1028 #endif 1029 } 1030 (void)putc('\n', stdout); 1031 #undef ND 1032 1033 (void)close(s); 1034 } 1035 1036 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1037 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1038 #endif 1039 1040 static void 1041 rtrlist(void) 1042 { 1043 #ifdef ICMPV6CTL_ND6_DRLIST 1044 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1045 char *buf; 1046 struct in6_defrouter *p, *ep; 1047 size_t l; 1048 struct timeval tim; 1049 1050 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1051 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1052 /*NOTREACHED*/ 1053 } 1054 if (l == 0) 1055 return; 1056 buf = malloc(l); 1057 if (!buf) { 1058 err(1, "malloc"); 1059 /*NOTREACHED*/ 1060 } 1061 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1062 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1063 /*NOTREACHED*/ 1064 } 1065 1066 ep = (struct in6_defrouter *)(void *)(buf + l); 1067 for (p = (struct in6_defrouter *)(void *)buf; p < ep; p++) { 1068 int rtpref; 1069 1070 if (getnameinfo((struct sockaddr *)(void *)&p->rtaddr, 1071 (socklen_t)p->rtaddr.sin6_len, host_buf, sizeof(host_buf), 1072 NULL, 0, (nflag ? NI_NUMERICHOST : 0)) != 0) 1073 (void)strlcpy(host_buf, "?", sizeof(host_buf)); 1074 1075 (void)printf("%s if=%s", host_buf, 1076 if_indextoname((unsigned int)p->if_index, ifix_buf)); 1077 (void)printf(", flags=%s%s", 1078 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1079 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1080 rtpref = ((uint32_t)(p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1081 (void)printf(", pref=%s", rtpref_str[rtpref]); 1082 1083 (void)gettimeofday(&tim, 0); 1084 if (p->expire == 0) 1085 (void)printf(", expire=Never\n"); 1086 else 1087 (void)printf(", expire=%s\n", 1088 sec2str((time_t)(p->expire - tim.tv_sec))); 1089 } 1090 free(buf); 1091 #else 1092 struct in6_drlist dr; 1093 int s, i; 1094 struct timeval time; 1095 1096 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1097 err(1, "socket"); 1098 /* NOTREACHED */ 1099 } 1100 (void)memset(&dr, 0, sizeof(dr)); 1101 (void)strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1102 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1103 err(1, "ioctl(SIOCGDRLST_IN6)"); 1104 /* NOTREACHED */ 1105 } 1106 #define DR dr.defrouter[i] 1107 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1108 struct sockaddr_in6 sin6; 1109 1110 (void)memset(&sin6, 0, sizeof(sin6)); 1111 sin6.sin6_family = AF_INET6; 1112 sin6.sin6_len = sizeof(sin6); 1113 sin6.sin6_addr = DR.rtaddr; 1114 (void)getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 1115 host_buf, sizeof(host_buf), NULL, 0, 1116 (nflag ? NI_NUMERICHOST : 0)); 1117 1118 (void)printf("%s if=%s", host_buf, 1119 if_indextoname(DR.if_index, ifix_buf)); 1120 (void)printf(", flags=%s%s", 1121 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1122 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1123 gettimeofday(&time, 0); 1124 if (DR.expire == 0) 1125 (void)printf(", expire=Never\n"); 1126 else 1127 (void)printf(", expire=%s\n", 1128 sec2str(DR.expire - time.tv_sec)); 1129 } 1130 #undef DR 1131 (void)close(s); 1132 #endif 1133 } 1134 1135 static void 1136 plist(void) 1137 { 1138 #ifdef ICMPV6CTL_ND6_PRLIST 1139 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1140 char *buf; 1141 struct in6_prefix *p, *ep, *n; 1142 struct sockaddr_in6 *advrtr; 1143 size_t l; 1144 struct timeval tim; 1145 const int niflags = NI_NUMERICHOST; 1146 int ninflags = nflag ? NI_NUMERICHOST : 0; 1147 char namebuf[NI_MAXHOST]; 1148 1149 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1150 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1151 /*NOTREACHED*/ 1152 } 1153 buf = malloc(l); 1154 if (!buf) { 1155 err(1, "malloc"); 1156 /*NOTREACHED*/ 1157 } 1158 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1159 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1160 /*NOTREACHED*/ 1161 } 1162 1163 ep = (struct in6_prefix *)(void *)(buf + l); 1164 for (p = (struct in6_prefix *)(void *)buf; p < ep; p = n) { 1165 advrtr = (struct sockaddr_in6 *)(void *)(p + 1); 1166 n = (struct in6_prefix *)(void *)&advrtr[p->advrtrs]; 1167 1168 if (getnameinfo((struct sockaddr *)(void *)&p->prefix, 1169 (socklen_t)p->prefix.sin6_len, namebuf, sizeof(namebuf), 1170 NULL, 0, niflags) != 0) 1171 (void)strlcpy(namebuf, "?", sizeof(namebuf)); 1172 (void)printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1173 if_indextoname((unsigned int)p->if_index, ifix_buf)); 1174 1175 (void)gettimeofday(&tim, 0); 1176 /* 1177 * meaning of fields, especially flags, is very different 1178 * by origin. notify the difference to the users. 1179 */ 1180 (void)printf("flags=%s%s%s%s%s", 1181 p->raflags.onlink ? "L" : "", 1182 p->raflags.autonomous ? "A" : "", 1183 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1184 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1185 #ifdef NDPRF_HOME 1186 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1187 #else 1188 "" 1189 #endif 1190 ); 1191 if (p->vltime == ND6_INFINITE_LIFETIME) 1192 (void)printf(" vltime=infinity"); 1193 else 1194 (void)printf(" vltime=%lu", (unsigned long)p->vltime); 1195 if (p->pltime == ND6_INFINITE_LIFETIME) 1196 (void)printf(", pltime=infinity"); 1197 else 1198 (void)printf(", pltime=%lu", (unsigned long)p->pltime); 1199 if (p->expire == 0) 1200 (void)printf(", expire=Never"); 1201 else if (p->expire >= tim.tv_sec) 1202 (void)printf(", expire=%s", 1203 sec2str(p->expire - tim.tv_sec)); 1204 else 1205 (void)printf(", expired"); 1206 (void)printf(", ref=%d", p->refcnt); 1207 (void)printf("\n"); 1208 /* 1209 * "advertising router" list is meaningful only if the prefix 1210 * information is from RA. 1211 */ 1212 if (p->advrtrs) { 1213 int j; 1214 struct sockaddr_in6 *sin6; 1215 1216 sin6 = advrtr; 1217 (void)printf(" advertised by\n"); 1218 for (j = 0; j < p->advrtrs; j++) { 1219 struct in6_nbrinfo *nbi; 1220 1221 if (getnameinfo((struct sockaddr *)(void *)sin6, 1222 (socklen_t)sin6->sin6_len, namebuf, 1223 sizeof(namebuf), NULL, 0, ninflags) != 0) 1224 (void)strlcpy(namebuf, "?", sizeof(namebuf)); 1225 (void)printf(" %s", namebuf); 1226 1227 nbi = getnbrinfo(&sin6->sin6_addr, 1228 (unsigned int)p->if_index, 0); 1229 if (nbi) { 1230 switch (nbi->state) { 1231 case ND6_LLINFO_REACHABLE: 1232 case ND6_LLINFO_STALE: 1233 case ND6_LLINFO_DELAY: 1234 case ND6_LLINFO_PROBE: 1235 (void)printf(" (reachable)\n"); 1236 break; 1237 default: 1238 (void)printf(" (unreachable)\n"); 1239 } 1240 } else 1241 (void)printf(" (no neighbor state)\n"); 1242 sin6++; 1243 } 1244 } else 1245 (void)printf(" No advertising router\n"); 1246 } 1247 free(buf); 1248 #else 1249 struct in6_prlist pr; 1250 int s, i; 1251 struct timeval time; 1252 1253 (void)gettimeofday(&time, 0); 1254 1255 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1256 err(1, "socket"); 1257 /* NOTREACHED */ 1258 } 1259 (void)memset(&pr, 0, sizeof(pr)); 1260 (void)strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1261 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1262 err(1, "ioctl(SIOCGPRLST_IN6)"); 1263 /* NOTREACHED */ 1264 } 1265 #define PR pr.prefix[i] 1266 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1267 struct sockaddr_in6 p6; 1268 char namebuf[NI_MAXHOST]; 1269 int niflags; 1270 1271 #ifdef NDPRF_ONLINK 1272 p6 = PR.prefix; 1273 #else 1274 (void)memset(&p6, 0, sizeof(p6)); 1275 p6.sin6_family = AF_INET6; 1276 p6.sin6_len = sizeof(p6); 1277 p6.sin6_addr = PR.prefix; 1278 #endif 1279 1280 niflags = NI_NUMERICHOST; 1281 if (getnameinfo((struct sockaddr *)&p6, 1282 sizeof(p6), namebuf, sizeof(namebuf), 1283 NULL, 0, niflags)) { 1284 warnx("getnameinfo failed"); 1285 continue; 1286 } 1287 (void)printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1288 if_indextoname(PR.if_index, ifix_buf)); 1289 1290 (void)gettimeofday(&time, 0); 1291 /* 1292 * meaning of fields, especially flags, is very different 1293 * by origin. notify the difference to the users. 1294 */ 1295 #if 0 1296 (void)printf(" %s", 1297 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1298 #endif 1299 #ifdef NDPRF_ONLINK 1300 (void)printf("flags=%s%s%s%s%s", 1301 PR.raflags.onlink ? "L" : "", 1302 PR.raflags.autonomous ? "A" : "", 1303 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1304 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1305 #ifdef NDPRF_HOME 1306 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1307 #else 1308 "" 1309 #endif 1310 ); 1311 #else 1312 (void)printf("flags=%s%s", 1313 PR.raflags.onlink ? "L" : "", 1314 PR.raflags.autonomous ? "A" : ""); 1315 #endif 1316 if (PR.vltime == ND6_INFINITE_LIFETIME) 1317 (void)printf(" vltime=infinity"); 1318 else 1319 (void)printf(" vltime=%lu", PR.vltime); 1320 if (PR.pltime == ND6_INFINITE_LIFETIME) 1321 (void)printf(", pltime=infinity"); 1322 else 1323 (void)printf(", pltime=%lu", PR.pltime); 1324 if (PR.expire == 0) 1325 (void)printf(", expire=Never"); 1326 else if (PR.expire >= time.tv_sec) 1327 (void)printf(", expire=%s", 1328 sec2str(PR.expire - time.tv_sec)); 1329 else 1330 (void)printf(", expired"); 1331 #ifdef NDPRF_ONLINK 1332 (void)printf(", ref=%d", PR.refcnt); 1333 #endif 1334 #if 0 1335 switch (PR.origin) { 1336 case PR_ORIG_RA: 1337 (void)printf(", origin=RA"); 1338 break; 1339 case PR_ORIG_RR: 1340 (void)printf(", origin=RR"); 1341 break; 1342 case PR_ORIG_STATIC: 1343 (void)printf(", origin=static"); 1344 break; 1345 case PR_ORIG_KERNEL: 1346 (void)printf(", origin=kernel"); 1347 break; 1348 default: 1349 (void)printf(", origin=?"); 1350 break; 1351 } 1352 #endif 1353 (void)printf("\n"); 1354 /* 1355 * "advertising router" list is meaningful only if the prefix 1356 * information is from RA. 1357 */ 1358 if (0 && /* prefix origin is almost obsolted */ 1359 PR.origin != PR_ORIG_RA) 1360 ; 1361 else if (PR.advrtrs) { 1362 int j; 1363 (void)printf(" advertised by\n"); 1364 for (j = 0; j < PR.advrtrs; j++) { 1365 struct sockaddr_in6 sin6; 1366 struct in6_nbrinfo *nbi; 1367 1368 bzero(&sin6, sizeof(sin6)); 1369 sin6.sin6_family = AF_INET6; 1370 sin6.sin6_len = sizeof(sin6); 1371 sin6.sin6_addr = PR.advrtr[j]; 1372 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1373 (void)getnameinfo((struct sockaddr *)&sin6, 1374 sin6.sin6_len, host_buf, 1375 sizeof(host_buf), NULL, 0, 1376 (nflag ? NI_NUMERICHOST : 0)); 1377 (void)printf(" %s", host_buf); 1378 1379 nbi = getnbrinfo(&sin6.sin6_addr, 1380 PR.if_index, 0); 1381 if (nbi) { 1382 switch (nbi->state) { 1383 case ND6_LLINFO_REACHABLE: 1384 case ND6_LLINFO_STALE: 1385 case ND6_LLINFO_DELAY: 1386 case ND6_LLINFO_PROBE: 1387 (void)printf(" (reachable)\n"); 1388 break; 1389 default: 1390 (void)printf(" (unreachable)\n"); 1391 } 1392 } else 1393 (void)printf(" (no neighbor state)\n"); 1394 } 1395 if (PR.advrtrs > DRLSTSIZ) 1396 (void)printf(" and %d routers\n", 1397 PR.advrtrs - DRLSTSIZ); 1398 } else 1399 (void)printf(" No advertising router\n"); 1400 } 1401 #undef PR 1402 (void)close(s); 1403 #endif 1404 } 1405 1406 static void 1407 pfx_flush(void) 1408 { 1409 char dummyif[IFNAMSIZ+8]; 1410 int s; 1411 1412 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1413 err(1, "socket"); 1414 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1415 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1416 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1417 (void)close(s); 1418 } 1419 1420 static void 1421 rtr_flush(void) 1422 { 1423 char dummyif[IFNAMSIZ+8]; 1424 int s; 1425 1426 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1427 err(1, "socket"); 1428 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1429 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1430 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1431 1432 (void)close(s); 1433 } 1434 1435 static void 1436 harmonize_rtr(void) 1437 { 1438 char dummyif[IFNAMSIZ+8]; 1439 int s; 1440 1441 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1442 err(1, "socket"); 1443 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1444 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1445 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1446 1447 (void)close(s); 1448 } 1449 1450 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1451 static void 1452 setdefif(char *ifname) 1453 { 1454 struct in6_ndifreq ndifreq; 1455 unsigned int ifindex; 1456 int s; 1457 1458 if (strcasecmp(ifname, "delete") == 0) 1459 ifindex = 0; 1460 else { 1461 if ((ifindex = if_nametoindex(ifname)) == 0) 1462 err(1, "failed to resolve i/f index for %s", ifname); 1463 } 1464 1465 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1466 err(1, "socket"); 1467 1468 (void)strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1469 ndifreq.ifindex = ifindex; 1470 1471 if (ioctl(s, SIOCSDEFIFACE_IN6, &ndifreq) < 0) 1472 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1473 1474 (void)close(s); 1475 } 1476 1477 static void 1478 getdefif(void) 1479 { 1480 struct in6_ndifreq ndifreq; 1481 char ifname[IFNAMSIZ+8]; 1482 int s; 1483 1484 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1485 err(1, "socket"); 1486 1487 (void)memset(&ndifreq, 0, sizeof(ndifreq)); 1488 (void)strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1489 1490 if (ioctl(s, SIOCGDEFIFACE_IN6, &ndifreq) < 0) 1491 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1492 1493 if (ndifreq.ifindex == 0) 1494 (void)printf("No default interface.\n"); 1495 else { 1496 if ((if_indextoname((unsigned int)ndifreq.ifindex, ifname)) == NULL) 1497 err(1, "failed to resolve ifname for index %lu", 1498 ndifreq.ifindex); 1499 (void)printf("ND default interface = %s\n", ifname); 1500 } 1501 1502 (void)close(s); 1503 } 1504 #endif 1505 1506 static const char * 1507 sec2str(time_t total) 1508 { 1509 static char result[256]; 1510 int days, hours, mins, secs; 1511 int first = 1; 1512 char *p = result; 1513 char *ep = &result[sizeof(result)]; 1514 int n; 1515 1516 days = total / 3600 / 24; 1517 hours = (total / 3600) % 24; 1518 mins = (total / 60) % 60; 1519 secs = total % 60; 1520 1521 if (days) { 1522 first = 0; 1523 n = snprintf(p, (size_t)(ep - p), "%dd", days); 1524 if (n < 0 || n >= ep - p) 1525 return "?"; 1526 p += n; 1527 } 1528 if (!first || hours) { 1529 first = 0; 1530 n = snprintf(p, (size_t)(ep - p), "%dh", hours); 1531 if (n < 0 || n >= ep - p) 1532 return "?"; 1533 p += n; 1534 } 1535 if (!first || mins) { 1536 first = 0; 1537 n = snprintf(p, (size_t)(ep - p), "%dm", mins); 1538 if (n < 0 || n >= ep - p) 1539 return "?"; 1540 p += n; 1541 } 1542 (void)snprintf(p, (size_t)(ep - p), "%ds", secs); 1543 1544 return(result); 1545 } 1546 1547 /* 1548 * Print the timestamp 1549 * from tcpdump/util.c 1550 */ 1551 static void 1552 ts_print(const struct timeval *tvp) 1553 { 1554 int s; 1555 1556 /* Default */ 1557 s = (tvp->tv_sec + thiszone) % 86400; 1558 (void)printf("%02d:%02d:%02d.%06u ", 1559 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1560 } 1561
Indexes created Sun Sep 28 16:09:52 GMT 2025