1 /* $NetBSD: ndp.c,v 1.36 2006/10/22 21:24:44 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 = { 318 .sin6_len = sizeof(so_mask), 319 .sin6_family = AF_INET6 320 }; 321 #endif 322 static struct sockaddr_in6 blank_sin = { 323 .sin6_len = sizeof(blank_sin), 324 .sin6_family = AF_INET6 325 }; 326 static struct sockaddr_in6 sin_m; 327 static struct sockaddr_dl blank_sdl = { 328 .sdl_len = sizeof(blank_sdl), 329 .sdl_family = AF_LINK, 330 }; 331 static struct sockaddr_dl sdl_m; 332 static int expire_time, flags, found_entry; 333 static struct { 334 struct rt_msghdr m_rtm; 335 char m_space[512]; 336 } m_rtmsg; 337 338 /* 339 * Set an individual neighbor cache entry 340 */ 341 static int 342 set(int argc, char **argv) 343 { 344 register struct sockaddr_in6 *mysin = &sin_m; 345 register struct sockaddr_dl *sdl; 346 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 347 struct addrinfo hints, *res; 348 int gai_error; 349 u_char *ea; 350 char *host = argv[0], *eaddr = argv[1]; 351 352 getsocket(); 353 argc -= 2; 354 argv += 2; 355 sdl_m = blank_sdl; 356 sin_m = blank_sin; 357 358 (void)memset(&hints, 0, sizeof(hints)); 359 hints.ai_family = AF_INET6; 360 gai_error = getaddrinfo(host, NULL, &hints, &res); 361 if (gai_error) { 362 warnx("%s: %s\n", host, gai_strerror(gai_error)); 363 return 1; 364 } 365 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 366 #ifdef __KAME__ 367 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr)) { 368 *(u_int16_t *)(void *)&mysin->sin6_addr.s6_addr[2] = 369 htons(((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_scope_id); 370 } 371 #endif 372 ea = (u_char *)LLADDR(&sdl_m); 373 if (ndp_ether_aton(eaddr, ea) == 0) 374 sdl_m.sdl_alen = 6; 375 flags = expire_time = 0; 376 while (argc-- > 0) { 377 if (strncmp(argv[0], "temp", 4) == 0) { 378 struct timeval tim; 379 380 (void)gettimeofday(&tim, 0); 381 expire_time = tim.tv_sec + 20 * 60; 382 } else if (strncmp(argv[0], "proxy", 5) == 0) 383 flags |= RTF_ANNOUNCE; 384 argv++; 385 } 386 if (rtmsg(RTM_GET) < 0) { 387 errx(1, "RTM_GET(%s) failed", host); 388 /* NOTREACHED */ 389 } 390 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 391 sdl = (struct sockaddr_dl *)(void *)(ROUNDUP(mysin->sin6_len) + (char *)(void *)mysin); 392 if (IN6_ARE_ADDR_EQUAL(&mysin->sin6_addr, &sin_m.sin6_addr)) { 393 if (sdl->sdl_family == AF_LINK && 394 (rtm->rtm_flags & RTF_LLINFO) && 395 !(rtm->rtm_flags & RTF_GATEWAY)) { 396 switch (sdl->sdl_type) { 397 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 398 case IFT_ISO88024: case IFT_ISO88025: 399 goto overwrite; 400 } 401 } 402 /* 403 * IPv4 arp command retries with sin_other = SIN_PROXY here. 404 */ 405 (void)fprintf(stderr, "set: cannot configure a new entry\n"); 406 return 1; 407 } 408 409 overwrite: 410 if (sdl->sdl_family != AF_LINK) { 411 warnx("cannot intuit interface index and type for %s", host); 412 return (1); 413 } 414 sdl_m.sdl_type = sdl->sdl_type; 415 sdl_m.sdl_index = sdl->sdl_index; 416 return (rtmsg(RTM_ADD)); 417 } 418 419 /* 420 * Display an individual neighbor cache entry 421 */ 422 static void 423 get(char *host) 424 { 425 struct sockaddr_in6 *mysin = &sin_m; 426 struct addrinfo hints, *res; 427 int gai_error; 428 429 sin_m = blank_sin; 430 (void)memset(&hints, 0, sizeof(hints)); 431 hints.ai_family = AF_INET6; 432 gai_error = getaddrinfo(host, NULL, &hints, &res); 433 if (gai_error) { 434 warnx("%s: %s\n", host, gai_strerror(gai_error)); 435 return; 436 } 437 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 438 #ifdef __KAME__ 439 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr)) { 440 *(u_int16_t *)(void *)&mysin->sin6_addr.s6_addr[2] = 441 htons(((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_scope_id); 442 } 443 #endif 444 dump(&mysin->sin6_addr, 0); 445 if (found_entry == 0) { 446 (void)getnameinfo((struct sockaddr *)(void *)mysin, 447 (socklen_t)mysin->sin6_len, 448 host_buf, sizeof(host_buf), NULL ,0, 449 (nflag ? NI_NUMERICHOST : 0)); 450 errx(1, "%s (%s) -- no entry", host, host_buf); 451 } 452 } 453 454 /* 455 * Delete a neighbor cache entry 456 */ 457 static int 458 delete(char *host) 459 { 460 struct sockaddr_in6 *mysin = &sin_m; 461 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 462 struct sockaddr_dl *sdl; 463 struct addrinfo hints, *res; 464 int gai_error; 465 466 getsocket(); 467 sin_m = blank_sin; 468 469 bzero(&hints, sizeof(hints)); 470 hints.ai_family = AF_INET6; 471 gai_error = getaddrinfo(host, NULL, &hints, &res); 472 if (gai_error) { 473 warnx("%s: %s\n", host, gai_strerror(gai_error)); 474 return 1; 475 } 476 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 477 #ifdef __KAME__ 478 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr)) { 479 *(u_int16_t *)(void *)&mysin->sin6_addr.s6_addr[2] = 480 htons(((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_scope_id); 481 } 482 #endif 483 if (rtmsg(RTM_GET) < 0) 484 errx(1, "RTM_GET(%s) failed", host); 485 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 486 sdl = (struct sockaddr_dl *)(void *)(ROUNDUP(mysin->sin6_len) + 487 (char *)(void *)mysin); 488 if (IN6_ARE_ADDR_EQUAL(&mysin->sin6_addr, &sin_m.sin6_addr)) { 489 if (sdl->sdl_family == AF_LINK && 490 (rtm->rtm_flags & RTF_LLINFO) && 491 !(rtm->rtm_flags & RTF_GATEWAY)) { 492 goto delete; 493 } 494 /* 495 * IPv4 arp command retries with sin_other = SIN_PROXY here. 496 */ 497 warnx("delete: cannot delete non-NDP entry"); 498 return 1; 499 } 500 501 delete: 502 if (sdl->sdl_family != AF_LINK) { 503 (void)printf("cannot locate %s\n", host); 504 return (1); 505 } 506 if (rtmsg(RTM_DELETE) == 0) { 507 struct sockaddr_in6 s6 = *mysin; /* XXX: for safety */ 508 509 #ifdef __KAME__ 510 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 511 s6.sin6_scope_id = ntohs(*(u_int16_t *)(void *)&s6.sin6_addr.s6_addr[2]); 512 *(u_int16_t *)(void *)&s6.sin6_addr.s6_addr[2] = 0; 513 } 514 #endif 515 (void)getnameinfo((struct sockaddr *)(void *)&s6, 516 (socklen_t)s6.sin6_len, host_buf, 517 sizeof(host_buf), NULL, 0, 518 (nflag ? NI_NUMERICHOST : 0)); 519 (void)printf("%s (%s) deleted\n", host, host_buf); 520 } 521 522 return 0; 523 } 524 525 #define W_ADDR 36 526 #define W_LL 17 527 #define W_IF 6 528 529 /* 530 * Dump the entire neighbor cache 531 */ 532 static void 533 dump(struct in6_addr *addr, int cflag) 534 { 535 int mib[6]; 536 size_t needed; 537 char *lim, *buf, *next; 538 struct rt_msghdr *rtm; 539 struct sockaddr_in6 *mysin; 540 struct sockaddr_dl *sdl; 541 struct in6_nbrinfo *nbi; 542 struct timeval tim; 543 int addrwidth; 544 int llwidth; 545 int ifwidth; 546 char flgbuf[8]; 547 const char *ifname; 548 549 /* Print header */ 550 if (!tflag && !cflag) 551 (void)printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 552 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 553 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 554 555 again:; 556 mib[0] = CTL_NET; 557 mib[1] = PF_ROUTE; 558 mib[2] = 0; 559 mib[3] = AF_INET6; 560 mib[4] = NET_RT_FLAGS; 561 mib[5] = RTF_LLINFO; 562 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 563 err(1, "sysctl(PF_ROUTE estimate)"); 564 if (needed > 0) { 565 if ((buf = malloc(needed)) == NULL) 566 err(1, "malloc"); 567 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 568 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 569 lim = buf + needed; 570 } else 571 buf = lim = NULL; 572 573 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 574 int isrouter = 0, prbs = 0; 575 576 rtm = (struct rt_msghdr *)(void *)next; 577 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 578 sdl = (struct sockaddr_dl *)(void *)((char *)(void *)mysin + ROUNDUP(mysin->sin6_len)); 579 580 /* 581 * Some OSes can produce a route that has the LINK flag but 582 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 583 * and BSD/OS, where xx is not the interface identifier on 584 * lo0). Such routes entry would annoy getnbrinfo() below, 585 * so we skip them. 586 * XXX: such routes should have the GATEWAY flag, not the 587 * LINK flag. However, there is rotten routing software 588 * that advertises all routes that have the GATEWAY flag. 589 * Thus, KAME kernel intentionally does not set the LINK flag. 590 * What is to be fixed is not ndp, but such routing software 591 * (and the kernel workaround)... 592 */ 593 if (sdl->sdl_family != AF_LINK) 594 continue; 595 596 if (!(rtm->rtm_flags & RTF_HOST)) 597 continue; 598 599 if (addr) { 600 if (!IN6_ARE_ADDR_EQUAL(addr, &mysin->sin6_addr)) 601 continue; 602 found_entry = 1; 603 } else if (IN6_IS_ADDR_MULTICAST(&mysin->sin6_addr)) 604 continue; 605 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr) || 606 IN6_IS_ADDR_MC_LINKLOCAL(&mysin->sin6_addr)) { 607 /* XXX: should scope id be filled in the kernel? */ 608 if (mysin->sin6_scope_id == 0) 609 mysin->sin6_scope_id = sdl->sdl_index; 610 #ifdef __KAME__ 611 /* KAME specific hack; removed the embedded id */ 612 *(u_int16_t *)(void *)&mysin->sin6_addr.s6_addr[2] = 0; 613 #endif 614 } 615 (void)getnameinfo((struct sockaddr *)(void *)mysin, 616 (socklen_t)mysin->sin6_len, 617 host_buf, sizeof(host_buf), NULL, 0, 618 (nflag ? NI_NUMERICHOST : 0)); 619 if (cflag) { 620 #ifdef RTF_WASCLONED 621 if (rtm->rtm_flags & RTF_WASCLONED) 622 (void)delete(host_buf); 623 #elif defined(RTF_CLONED) 624 if (rtm->rtm_flags & RTF_CLONED) 625 (void)delete(host_buf); 626 #else 627 (void)delete(host_buf); 628 #endif 629 continue; 630 } 631 (void)gettimeofday(&tim, 0); 632 if (tflag) 633 ts_print(&tim); 634 635 addrwidth = strlen(host_buf); 636 if (addrwidth < W_ADDR) 637 addrwidth = W_ADDR; 638 llwidth = strlen(ether_str(sdl)); 639 if (W_ADDR + W_LL - addrwidth > llwidth) 640 llwidth = W_ADDR + W_LL - addrwidth; 641 ifname = if_indextoname((unsigned int)sdl->sdl_index, ifix_buf); 642 if (!ifname) 643 ifname = "?"; 644 ifwidth = strlen(ifname); 645 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 646 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 647 648 (void)printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, 649 host_buf, llwidth, llwidth, ether_str(sdl), ifwidth, 650 ifwidth, ifname); 651 652 /* Print neighbor discovery specific informations */ 653 nbi = getnbrinfo(&mysin->sin6_addr, 654 (unsigned int)sdl->sdl_index, 1); 655 if (nbi) { 656 if (nbi->expire > tim.tv_sec) { 657 (void)printf(" %-9.9s", 658 sec2str(nbi->expire - tim.tv_sec)); 659 } else if (nbi->expire == 0) 660 (void)printf(" %-9.9s", "permanent"); 661 else 662 (void)printf(" %-9.9s", "expired"); 663 664 switch (nbi->state) { 665 case ND6_LLINFO_NOSTATE: 666 (void)printf(" N"); 667 break; 668 #ifdef ND6_LLINFO_WAITDELETE 669 case ND6_LLINFO_WAITDELETE: 670 (void)printf(" W"); 671 break; 672 #endif 673 case ND6_LLINFO_INCOMPLETE: 674 (void)printf(" I"); 675 break; 676 case ND6_LLINFO_REACHABLE: 677 (void)printf(" R"); 678 break; 679 case ND6_LLINFO_STALE: 680 (void)printf(" S"); 681 break; 682 case ND6_LLINFO_DELAY: 683 (void)printf(" D"); 684 break; 685 case ND6_LLINFO_PROBE: 686 (void)printf(" P"); 687 break; 688 default: 689 (void)printf(" ?"); 690 break; 691 } 692 693 isrouter = nbi->isrouter; 694 prbs = nbi->asked; 695 } else { 696 warnx("failed to get neighbor information"); 697 (void)printf(" "); 698 } 699 700 /* 701 * other flags. R: router, P: proxy, W: ?? 702 */ 703 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 704 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s", 705 isrouter ? "R" : "", 706 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 707 } else { 708 mysin = (struct sockaddr_in6 *)(void *) 709 (sdl->sdl_len + (char *)(void *)sdl); 710 #if 0 /* W and P are mystery even for us */ 711 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 712 isrouter ? "R" : "", 713 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 714 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 715 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 716 #else 717 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s", 718 isrouter ? "R" : "", 719 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 720 #endif 721 } 722 (void)printf(" %s", flgbuf); 723 724 if (prbs) 725 (void)printf(" %d", prbs); 726 727 (void)printf("\n"); 728 } 729 if (buf != NULL) 730 free(buf); 731 732 if (repeat) { 733 (void)printf("\n"); 734 (void)fflush(stdout); 735 (void)sleep(repeat); 736 goto again; 737 } 738 } 739 740 static struct in6_nbrinfo * 741 getnbrinfo(struct in6_addr *addr, unsigned int ifindex, int warning) 742 { 743 static struct in6_nbrinfo nbi; 744 int s; 745 746 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 747 err(1, "socket"); 748 749 (void)memset(&nbi, 0, sizeof(nbi)); 750 (void)if_indextoname(ifindex, nbi.ifname); 751 nbi.addr = *addr; 752 if (ioctl(s, SIOCGNBRINFO_IN6, &nbi) < 0) { 753 if (warning) 754 warn("ioctl(SIOCGNBRINFO_IN6)"); 755 (void)close(s); 756 return(NULL); 757 } 758 759 (void)close(s); 760 return(&nbi); 761 } 762 763 static char * 764 ether_str(struct sockaddr_dl *sdl) 765 { 766 static char hbuf[NI_MAXHOST]; 767 768 if (sdl->sdl_alen) { 769 if (getnameinfo((struct sockaddr *)(void *)sdl, 770 (socklen_t)sdl->sdl_len, 771 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) 772 (void)snprintf(hbuf, sizeof(hbuf), "<invalid>"); 773 } else 774 (void)snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 775 776 return(hbuf); 777 } 778 779 static int 780 ndp_ether_aton(char *a, u_char *n) 781 { 782 int i, o[6]; 783 784 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 785 &o[3], &o[4], &o[5]); 786 if (i != 6) { 787 warnx("invalid Ethernet address '%s'", a); 788 return (1); 789 } 790 for (i = 0; i < 6; i++) 791 n[i] = o[i]; 792 return (0); 793 } 794 795 static void 796 usage(void) 797 { 798 const char *pn = getprogname(); 799 800 (void)fprintf(stderr, "Usage: %s [-nt] hostname\n", pn); 801 (void)fprintf(stderr, 802 " %s [-nt] -a | -c | -p | -r | -H | -P | -R\n", pn); 803 (void)fprintf(stderr, " %s [-nt] -A wait\n", pn); 804 (void)fprintf(stderr, " %s [-nt] -d hostname\n", pn); 805 (void)fprintf(stderr, " %s [-nt] -f filename\n", pn); 806 (void)fprintf(stderr, " %s [-nt] -i interface [flags...]\n", pn); 807 #ifdef SIOCSDEFIFACE_IN6 808 (void)fprintf(stderr, " %s [-nt] -I [interface|delete]\n", pn); 809 #endif 810 (void)fprintf(stderr, 811 " %s [-nt] -s nodename etheraddr [temp] [proxy]\n", pn); 812 exit(1); 813 } 814 815 static int 816 rtmsg(int cmd) 817 { 818 static int seq; 819 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 820 register char *cp = m_rtmsg.m_space; 821 register int l; 822 823 errno = 0; 824 if (cmd == RTM_DELETE) 825 goto doit; 826 (void)memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 827 rtm->rtm_flags = flags; 828 rtm->rtm_version = RTM_VERSION; 829 830 switch (cmd) { 831 default: 832 errx(1, "internal wrong cmd"); 833 /*NOTREACHED*/ 834 case RTM_ADD: 835 rtm->rtm_addrs |= RTA_GATEWAY; 836 if (expire_time) { 837 rtm->rtm_rmx.rmx_expire = expire_time; 838 rtm->rtm_inits = RTV_EXPIRE; 839 } 840 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 841 #ifdef notdef /* we don't support ipv6addr/128 type proxying. */ 842 if (rtm->rtm_flags & RTF_ANNOUNCE) { 843 rtm->rtm_flags &= ~RTF_HOST; 844 rtm->rtm_addrs |= RTA_NETMASK; 845 } 846 #endif 847 /* FALLTHROUGH */ 848 case RTM_GET: 849 rtm->rtm_addrs |= RTA_DST; 850 } 851 #define NEXTADDR(w, s) \ 852 if (rtm->rtm_addrs & (w)) { \ 853 (void)memcpy(cp, &s, sizeof(s)); \ 854 ADVANCE(cp, (struct sockaddr *)(void *)&s); \ 855 } 856 857 NEXTADDR(RTA_DST, sin_m); 858 NEXTADDR(RTA_GATEWAY, sdl_m); 859 #ifdef notdef /* we don't support ipv6addr/128 type proxying. */ 860 (void)memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 861 NEXTADDR(RTA_NETMASK, so_mask); 862 #endif 863 864 rtm->rtm_msglen = cp - (char *)(void *)&m_rtmsg; 865 doit: 866 l = rtm->rtm_msglen; 867 rtm->rtm_seq = ++seq; 868 rtm->rtm_type = cmd; 869 if (write(my_s, &m_rtmsg, (size_t)l) == -1) { 870 if (errno != ESRCH || cmd != RTM_DELETE) 871 err(1, "writing to routing socket"); 872 } 873 do { 874 l = read(my_s, &m_rtmsg, sizeof(m_rtmsg)); 875 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 876 if (l < 0) 877 warn("read from routing socket"); 878 return (0); 879 } 880 881 static void 882 ifinfo(char *ifname, int argc, char **argv) 883 { 884 struct in6_ndireq nd; 885 int i, s; 886 u_int32_t newflags; 887 #ifdef IPV6CTL_USETEMPADDR 888 u_int8_t nullbuf[8]; 889 #endif 890 891 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 892 err(1, "socket"); 893 (void)memset(&nd, 0, sizeof(nd)); 894 (void)strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 895 if (ioctl(s, SIOCGIFINFO_IN6, &nd) < 0) 896 err(1, "ioctl(SIOCGIFINFO_IN6)"); 897 #define ND nd.ndi 898 newflags = ND.flags; 899 for (i = 0; i < argc; i++) { 900 int clear = 0; 901 char *cp = argv[i]; 902 903 if (*cp == '-') { 904 clear = 1; 905 cp++; 906 } 907 908 #define SETFLAG(s, f) \ 909 do {\ 910 if (strcmp(cp, (s)) == 0) {\ 911 if (clear)\ 912 newflags &= ~(f);\ 913 else\ 914 newflags |= (f);\ 915 }\ 916 } while (/*CONSTCOND*/0) 917 /* 918 * XXX: this macro is not 100% correct, in that it matches "nud" against 919 * "nudbogus". But we just let it go since this is minor. 920 */ 921 #define SETVALUE(f, v) \ 922 do { \ 923 char *valptr; \ 924 unsigned long newval; \ 925 v = 0; /* unspecified */ \ 926 if (strncmp(cp, f, strlen(f)) == 0) { \ 927 valptr = strchr(cp, '='); \ 928 if (valptr == NULL) \ 929 err(1, "syntax error in %s field", (f)); \ 930 errno = 0; \ 931 newval = strtoul(++valptr, NULL, 0); \ 932 if (errno) \ 933 err(1, "syntax error in %s's value", (f)); \ 934 v = newval; \ 935 } \ 936 } while (/*CONSTCOND*/0) 937 938 #ifdef ND6_IFF_IFDISABLED 939 SETFLAG("disabled", ND6_IFF_IFDISABLED); 940 #endif 941 SETFLAG("nud", ND6_IFF_PERFORMNUD); 942 #ifdef ND6_IFF_ACCEPT_RTADV 943 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 944 #endif 945 #ifdef ND6_IFF_PREFER_SOURCE 946 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 947 #endif 948 #ifdef ND6_IFF_DONT_SET_IFROUTE 949 SETFLAG("dont_set_ifroute", ND6_IFF_DONT_SET_IFROUTE); 950 #endif 951 SETVALUE("basereachable", ND.basereachable); 952 SETVALUE("retrans", ND.retrans); 953 SETVALUE("curhlim", ND.chlim); 954 955 ND.flags = newflags; 956 #ifdef SIOCSIFINFO_IN6 957 if (ioctl(s, SIOCSIFINFO_IN6, &nd) < 0) 958 err(1, "ioctl(SIOCSIFINFO_IN6)"); 959 #else 960 if (ioctl(s, SIOCSIFINFO_FLAGS, &nd) < 0) 961 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 962 #endif 963 #undef SETFLAG 964 #undef SETVALUE 965 } 966 967 if (!ND.initialized) 968 errx(1, "%s: not initialized yet", ifname); 969 970 if (ioctl(s, SIOCGIFINFO_IN6, &nd) < 0) 971 err(1, "ioctl(SIOCGIFINFO_IN6)"); 972 (void)printf("linkmtu=%d", ND.linkmtu); 973 (void)printf(", maxmtu=%d", ND.maxmtu); 974 (void)printf(", curhlim=%d", ND.chlim); 975 (void)printf(", basereachable=%ds%dms", 976 ND.basereachable / 1000, ND.basereachable % 1000); 977 (void)printf(", reachable=%ds", ND.reachable); 978 (void)printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 979 #ifdef IPV6CTL_USETEMPADDR 980 (void)memset(nullbuf, 0, sizeof(nullbuf)); 981 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 982 int j; 983 u_int8_t *rbuf; 984 985 for (i = 0; i < 3; i++) { 986 switch (i) { 987 case 0: 988 (void)printf("\nRandom seed(0): "); 989 rbuf = ND.randomseed0; 990 break; 991 case 1: 992 (void)printf("\nRandom seed(1): "); 993 rbuf = ND.randomseed1; 994 break; 995 case 2: 996 (void)printf("\nRandom ID: "); 997 rbuf = ND.randomid; 998 break; 999 default: 1000 errx(1, "impossible case for tempaddr display"); 1001 } 1002 for (j = 0; j < 8; j++) 1003 (void)printf("%02x", rbuf[j]); 1004 } 1005 } 1006 #endif 1007 if (ND.flags) { 1008 (void)printf("\nFlags: "); 1009 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1010 (void)printf("nud "); 1011 #ifdef ND6_IFF_IFDISABLED 1012 if ((ND.flags & ND6_IFF_IFDISABLED)) 1013 (void)printf("disabled "); 1014 #endif 1015 #ifdef ND6_IFF_ACCEPT_RTADV 1016 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1017 (void)printf("accept_rtadv "); 1018 #endif 1019 #ifdef ND6_IFF_PREFER_SOURCE 1020 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1021 (void)printf("prefer_source "); 1022 #endif 1023 } 1024 (void)putc('\n', stdout); 1025 #undef ND 1026 1027 (void)close(s); 1028 } 1029 1030 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1031 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1032 #endif 1033 1034 static void 1035 rtrlist(void) 1036 { 1037 #ifdef ICMPV6CTL_ND6_DRLIST 1038 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1039 char *buf; 1040 struct in6_defrouter *p, *ep; 1041 size_t l; 1042 struct timeval tim; 1043 1044 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1045 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1046 /*NOTREACHED*/ 1047 } 1048 if (l == 0) 1049 return; 1050 buf = malloc(l); 1051 if (!buf) { 1052 err(1, "malloc"); 1053 /*NOTREACHED*/ 1054 } 1055 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1056 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1057 /*NOTREACHED*/ 1058 } 1059 1060 ep = (struct in6_defrouter *)(void *)(buf + l); 1061 for (p = (struct in6_defrouter *)(void *)buf; p < ep; p++) { 1062 int rtpref; 1063 1064 if (getnameinfo((struct sockaddr *)(void *)&p->rtaddr, 1065 (socklen_t)p->rtaddr.sin6_len, host_buf, sizeof(host_buf), 1066 NULL, 0, (nflag ? NI_NUMERICHOST : 0)) != 0) 1067 (void)strlcpy(host_buf, "?", sizeof(host_buf)); 1068 1069 (void)printf("%s if=%s", host_buf, 1070 if_indextoname((unsigned int)p->if_index, ifix_buf)); 1071 (void)printf(", flags=%s%s", 1072 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1073 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1074 rtpref = ((uint32_t)(p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1075 (void)printf(", pref=%s", rtpref_str[rtpref]); 1076 1077 (void)gettimeofday(&tim, 0); 1078 if (p->expire == 0) 1079 (void)printf(", expire=Never\n"); 1080 else 1081 (void)printf(", expire=%s\n", 1082 sec2str((time_t)(p->expire - tim.tv_sec))); 1083 } 1084 free(buf); 1085 #else 1086 struct in6_drlist dr; 1087 int s, i; 1088 struct timeval time; 1089 1090 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1091 err(1, "socket"); 1092 /* NOTREACHED */ 1093 } 1094 (void)memset(&dr, 0, sizeof(dr)); 1095 (void)strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1096 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1097 err(1, "ioctl(SIOCGDRLST_IN6)"); 1098 /* NOTREACHED */ 1099 } 1100 #define DR dr.defrouter[i] 1101 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1102 struct sockaddr_in6 sin6; 1103 1104 (void)memset(&sin6, 0, sizeof(sin6)); 1105 sin6.sin6_family = AF_INET6; 1106 sin6.sin6_len = sizeof(sin6); 1107 sin6.sin6_addr = DR.rtaddr; 1108 (void)getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 1109 host_buf, sizeof(host_buf), NULL, 0, 1110 (nflag ? NI_NUMERICHOST : 0)); 1111 1112 (void)printf("%s if=%s", host_buf, 1113 if_indextoname(DR.if_index, ifix_buf)); 1114 (void)printf(", flags=%s%s", 1115 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1116 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1117 gettimeofday(&time, 0); 1118 if (DR.expire == 0) 1119 (void)printf(", expire=Never\n"); 1120 else 1121 (void)printf(", expire=%s\n", 1122 sec2str(DR.expire - time.tv_sec)); 1123 } 1124 #undef DR 1125 (void)close(s); 1126 #endif 1127 } 1128 1129 static void 1130 plist(void) 1131 { 1132 #ifdef ICMPV6CTL_ND6_PRLIST 1133 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1134 char *buf; 1135 struct in6_prefix *p, *ep, *n; 1136 struct sockaddr_in6 *advrtr; 1137 size_t l; 1138 struct timeval tim; 1139 const int niflags = NI_NUMERICHOST; 1140 int ninflags = nflag ? NI_NUMERICHOST : 0; 1141 char namebuf[NI_MAXHOST]; 1142 1143 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1144 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1145 /*NOTREACHED*/ 1146 } 1147 buf = malloc(l); 1148 if (!buf) { 1149 err(1, "malloc"); 1150 /*NOTREACHED*/ 1151 } 1152 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1153 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1154 /*NOTREACHED*/ 1155 } 1156 1157 ep = (struct in6_prefix *)(void *)(buf + l); 1158 for (p = (struct in6_prefix *)(void *)buf; p < ep; p = n) { 1159 advrtr = (struct sockaddr_in6 *)(void *)(p + 1); 1160 n = (struct in6_prefix *)(void *)&advrtr[p->advrtrs]; 1161 1162 if (getnameinfo((struct sockaddr *)(void *)&p->prefix, 1163 (socklen_t)p->prefix.sin6_len, namebuf, sizeof(namebuf), 1164 NULL, 0, niflags) != 0) 1165 (void)strlcpy(namebuf, "?", sizeof(namebuf)); 1166 (void)printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1167 if_indextoname((unsigned int)p->if_index, ifix_buf)); 1168 1169 (void)gettimeofday(&tim, 0); 1170 /* 1171 * meaning of fields, especially flags, is very different 1172 * by origin. notify the difference to the users. 1173 */ 1174 (void)printf("flags=%s%s%s%s%s", 1175 p->raflags.onlink ? "L" : "", 1176 p->raflags.autonomous ? "A" : "", 1177 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1178 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1179 #ifdef NDPRF_HOME 1180 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1181 #else 1182 "" 1183 #endif 1184 ); 1185 if (p->vltime == ND6_INFINITE_LIFETIME) 1186 (void)printf(" vltime=infinity"); 1187 else 1188 (void)printf(" vltime=%lu", (unsigned long)p->vltime); 1189 if (p->pltime == ND6_INFINITE_LIFETIME) 1190 (void)printf(", pltime=infinity"); 1191 else 1192 (void)printf(", pltime=%lu", (unsigned long)p->pltime); 1193 if (p->expire == 0) 1194 (void)printf(", expire=Never"); 1195 else if (p->expire >= tim.tv_sec) 1196 (void)printf(", expire=%s", 1197 sec2str(p->expire - tim.tv_sec)); 1198 else 1199 (void)printf(", expired"); 1200 (void)printf(", ref=%d", p->refcnt); 1201 (void)printf("\n"); 1202 /* 1203 * "advertising router" list is meaningful only if the prefix 1204 * information is from RA. 1205 */ 1206 if (p->advrtrs) { 1207 int j; 1208 struct sockaddr_in6 *sin6; 1209 1210 sin6 = advrtr; 1211 (void)printf(" advertised by\n"); 1212 for (j = 0; j < p->advrtrs; j++) { 1213 struct in6_nbrinfo *nbi; 1214 1215 if (getnameinfo((struct sockaddr *)(void *)sin6, 1216 (socklen_t)sin6->sin6_len, namebuf, 1217 sizeof(namebuf), NULL, 0, ninflags) != 0) 1218 (void)strlcpy(namebuf, "?", sizeof(namebuf)); 1219 (void)printf(" %s", namebuf); 1220 1221 nbi = getnbrinfo(&sin6->sin6_addr, 1222 (unsigned int)p->if_index, 0); 1223 if (nbi) { 1224 switch (nbi->state) { 1225 case ND6_LLINFO_REACHABLE: 1226 case ND6_LLINFO_STALE: 1227 case ND6_LLINFO_DELAY: 1228 case ND6_LLINFO_PROBE: 1229 (void)printf(" (reachable)\n"); 1230 break; 1231 default: 1232 (void)printf(" (unreachable)\n"); 1233 } 1234 } else 1235 (void)printf(" (no neighbor state)\n"); 1236 sin6++; 1237 } 1238 } else 1239 (void)printf(" No advertising router\n"); 1240 } 1241 free(buf); 1242 #else 1243 struct in6_prlist pr; 1244 int s, i; 1245 struct timeval time; 1246 1247 (void)gettimeofday(&time, 0); 1248 1249 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1250 err(1, "socket"); 1251 /* NOTREACHED */ 1252 } 1253 (void)memset(&pr, 0, sizeof(pr)); 1254 (void)strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1255 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1256 err(1, "ioctl(SIOCGPRLST_IN6)"); 1257 /* NOTREACHED */ 1258 } 1259 #define PR pr.prefix[i] 1260 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1261 struct sockaddr_in6 p6; 1262 char namebuf[NI_MAXHOST]; 1263 int niflags; 1264 1265 #ifdef NDPRF_ONLINK 1266 p6 = PR.prefix; 1267 #else 1268 (void)memset(&p6, 0, sizeof(p6)); 1269 p6.sin6_family = AF_INET6; 1270 p6.sin6_len = sizeof(p6); 1271 p6.sin6_addr = PR.prefix; 1272 #endif 1273 1274 niflags = NI_NUMERICHOST; 1275 if (getnameinfo((struct sockaddr *)&p6, 1276 sizeof(p6), namebuf, sizeof(namebuf), 1277 NULL, 0, niflags)) { 1278 warnx("getnameinfo failed"); 1279 continue; 1280 } 1281 (void)printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1282 if_indextoname(PR.if_index, ifix_buf)); 1283 1284 (void)gettimeofday(&time, 0); 1285 /* 1286 * meaning of fields, especially flags, is very different 1287 * by origin. notify the difference to the users. 1288 */ 1289 #if 0 1290 (void)printf(" %s", 1291 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1292 #endif 1293 #ifdef NDPRF_ONLINK 1294 (void)printf("flags=%s%s%s%s%s", 1295 PR.raflags.onlink ? "L" : "", 1296 PR.raflags.autonomous ? "A" : "", 1297 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1298 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1299 #ifdef NDPRF_HOME 1300 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1301 #else 1302 "" 1303 #endif 1304 ); 1305 #else 1306 (void)printf("flags=%s%s", 1307 PR.raflags.onlink ? "L" : "", 1308 PR.raflags.autonomous ? "A" : ""); 1309 #endif 1310 if (PR.vltime == ND6_INFINITE_LIFETIME) 1311 (void)printf(" vltime=infinity"); 1312 else 1313 (void)printf(" vltime=%lu", PR.vltime); 1314 if (PR.pltime == ND6_INFINITE_LIFETIME) 1315 (void)printf(", pltime=infinity"); 1316 else 1317 (void)printf(", pltime=%lu", PR.pltime); 1318 if (PR.expire == 0) 1319 (void)printf(", expire=Never"); 1320 else if (PR.expire >= time.tv_sec) 1321 (void)printf(", expire=%s", 1322 sec2str(PR.expire - time.tv_sec)); 1323 else 1324 (void)printf(", expired"); 1325 #ifdef NDPRF_ONLINK 1326 (void)printf(", ref=%d", PR.refcnt); 1327 #endif 1328 #if 0 1329 switch (PR.origin) { 1330 case PR_ORIG_RA: 1331 (void)printf(", origin=RA"); 1332 break; 1333 case PR_ORIG_RR: 1334 (void)printf(", origin=RR"); 1335 break; 1336 case PR_ORIG_STATIC: 1337 (void)printf(", origin=static"); 1338 break; 1339 case PR_ORIG_KERNEL: 1340 (void)printf(", origin=kernel"); 1341 break; 1342 default: 1343 (void)printf(", origin=?"); 1344 break; 1345 } 1346 #endif 1347 (void)printf("\n"); 1348 /* 1349 * "advertising router" list is meaningful only if the prefix 1350 * information is from RA. 1351 */ 1352 if (0 && /* prefix origin is almost obsolted */ 1353 PR.origin != PR_ORIG_RA) 1354 ; 1355 else if (PR.advrtrs) { 1356 int j; 1357 (void)printf(" advertised by\n"); 1358 for (j = 0; j < PR.advrtrs; j++) { 1359 struct sockaddr_in6 sin6; 1360 struct in6_nbrinfo *nbi; 1361 1362 bzero(&sin6, sizeof(sin6)); 1363 sin6.sin6_family = AF_INET6; 1364 sin6.sin6_len = sizeof(sin6); 1365 sin6.sin6_addr = PR.advrtr[j]; 1366 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1367 (void)getnameinfo((struct sockaddr *)&sin6, 1368 sin6.sin6_len, host_buf, 1369 sizeof(host_buf), NULL, 0, 1370 (nflag ? NI_NUMERICHOST : 0)); 1371 (void)printf(" %s", host_buf); 1372 1373 nbi = getnbrinfo(&sin6.sin6_addr, 1374 PR.if_index, 0); 1375 if (nbi) { 1376 switch (nbi->state) { 1377 case ND6_LLINFO_REACHABLE: 1378 case ND6_LLINFO_STALE: 1379 case ND6_LLINFO_DELAY: 1380 case ND6_LLINFO_PROBE: 1381 (void)printf(" (reachable)\n"); 1382 break; 1383 default: 1384 (void)printf(" (unreachable)\n"); 1385 } 1386 } else 1387 (void)printf(" (no neighbor state)\n"); 1388 } 1389 if (PR.advrtrs > DRLSTSIZ) 1390 (void)printf(" and %d routers\n", 1391 PR.advrtrs - DRLSTSIZ); 1392 } else 1393 (void)printf(" No advertising router\n"); 1394 } 1395 #undef PR 1396 (void)close(s); 1397 #endif 1398 } 1399 1400 static void 1401 pfx_flush(void) 1402 { 1403 char dummyif[IFNAMSIZ+8]; 1404 int s; 1405 1406 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1407 err(1, "socket"); 1408 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1409 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1410 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1411 (void)close(s); 1412 } 1413 1414 static void 1415 rtr_flush(void) 1416 { 1417 char dummyif[IFNAMSIZ+8]; 1418 int s; 1419 1420 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1421 err(1, "socket"); 1422 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1423 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1424 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1425 1426 (void)close(s); 1427 } 1428 1429 static void 1430 harmonize_rtr(void) 1431 { 1432 char dummyif[IFNAMSIZ+8]; 1433 int s; 1434 1435 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1436 err(1, "socket"); 1437 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1438 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1439 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1440 1441 (void)close(s); 1442 } 1443 1444 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1445 static void 1446 setdefif(char *ifname) 1447 { 1448 struct in6_ndifreq ndifreq; 1449 unsigned int ifindex; 1450 int s; 1451 1452 if (strcasecmp(ifname, "delete") == 0) 1453 ifindex = 0; 1454 else { 1455 if ((ifindex = if_nametoindex(ifname)) == 0) 1456 err(1, "failed to resolve i/f index for %s", ifname); 1457 } 1458 1459 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1460 err(1, "socket"); 1461 1462 (void)strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1463 ndifreq.ifindex = ifindex; 1464 1465 if (ioctl(s, SIOCSDEFIFACE_IN6, &ndifreq) < 0) 1466 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1467 1468 (void)close(s); 1469 } 1470 1471 static void 1472 getdefif(void) 1473 { 1474 struct in6_ndifreq ndifreq; 1475 char ifname[IFNAMSIZ+8]; 1476 int s; 1477 1478 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1479 err(1, "socket"); 1480 1481 (void)memset(&ndifreq, 0, sizeof(ndifreq)); 1482 (void)strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1483 1484 if (ioctl(s, SIOCGDEFIFACE_IN6, &ndifreq) < 0) 1485 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1486 1487 if (ndifreq.ifindex == 0) 1488 (void)printf("No default interface.\n"); 1489 else { 1490 if ((if_indextoname((unsigned int)ndifreq.ifindex, ifname)) == NULL) 1491 err(1, "failed to resolve ifname for index %lu", 1492 ndifreq.ifindex); 1493 (void)printf("ND default interface = %s\n", ifname); 1494 } 1495 1496 (void)close(s); 1497 } 1498 #endif 1499 1500 static const char * 1501 sec2str(time_t total) 1502 { 1503 static char result[256]; 1504 int days, hours, mins, secs; 1505 int first = 1; 1506 char *p = result; 1507 char *ep = &result[sizeof(result)]; 1508 int n; 1509 1510 days = total / 3600 / 24; 1511 hours = (total / 3600) % 24; 1512 mins = (total / 60) % 60; 1513 secs = total % 60; 1514 1515 if (days) { 1516 first = 0; 1517 n = snprintf(p, (size_t)(ep - p), "%dd", days); 1518 if (n < 0 || n >= ep - p) 1519 return "?"; 1520 p += n; 1521 } 1522 if (!first || hours) { 1523 first = 0; 1524 n = snprintf(p, (size_t)(ep - p), "%dh", hours); 1525 if (n < 0 || n >= ep - p) 1526 return "?"; 1527 p += n; 1528 } 1529 if (!first || mins) { 1530 first = 0; 1531 n = snprintf(p, (size_t)(ep - p), "%dm", mins); 1532 if (n < 0 || n >= ep - p) 1533 return "?"; 1534 p += n; 1535 } 1536 (void)snprintf(p, (size_t)(ep - p), "%ds", secs); 1537 1538 return(result); 1539 } 1540 1541 /* 1542 * Print the timestamp 1543 * from tcpdump/util.c 1544 */ 1545 static void 1546 ts_print(const struct timeval *tvp) 1547 { 1548 int s; 1549 1550 /* Default */ 1551 s = (tvp->tv_sec + thiszone) % 86400; 1552 (void)printf("%02d:%02d:%02d.%06u ", 1553 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1554 } 1555