1 /* $NetBSD: ndp.c,v 1.43 2014/06/05 16:06:49 roy 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 static pid_t pid; 110 static int nflag; 111 static int tflag; 112 static int32_t thiszone; /* time difference with gmt */ 113 static int my_s = -1; 114 static unsigned int repeat = 0; 115 116 117 static char host_buf[NI_MAXHOST]; /* getnameinfo() */ 118 static char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 119 120 static void getsocket(void); 121 static int set(int, char **); 122 static void get(char *); 123 static int delete(char *); 124 static void dump(struct in6_addr *, int); 125 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *, unsigned int, int); 126 static char *ether_str(struct sockaddr_dl *); 127 static int ndp_ether_aton(char *, u_char *); 128 __dead static void usage(void); 129 static int rtmsg(int); 130 static void ifinfo(char *, int, char **); 131 static void rtrlist(void); 132 static void plist(void); 133 static void pfx_flush(void); 134 static void rtrlist(void); 135 static void rtr_flush(void); 136 static void harmonize_rtr(void); 137 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 138 static void getdefif(void); 139 static void setdefif(char *); 140 #endif 141 static const char *sec2str(time_t); 142 static char *ether_str(struct sockaddr_dl *); 143 static void ts_print(const struct timeval *); 144 145 #ifdef ICMPV6CTL_ND6_DRLIST 146 static const char *rtpref_str[] = { 147 "medium", /* 00 */ 148 "high", /* 01 */ 149 "rsv", /* 10 */ 150 "low" /* 11 */ 151 }; 152 #endif 153 154 static int mode = 0; 155 static char *arg = NULL; 156 157 int 158 main(int argc, char **argv) 159 { 160 int ch; 161 162 pid = getpid(); 163 thiszone = gmt2local(0L); 164 while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 165 switch (ch) { 166 case 'a': 167 case 'c': 168 case 'p': 169 case 'r': 170 case 'H': 171 case 'P': 172 case 'R': 173 case 's': 174 case 'I': 175 if (mode) { 176 usage(); 177 /*NOTREACHED*/ 178 } 179 mode = ch; 180 arg = NULL; 181 break; 182 case 'd': 183 case 'f': 184 case 'i' : 185 if (mode) { 186 usage(); 187 /*NOTREACHED*/ 188 } 189 mode = ch; 190 arg = optarg; 191 break; 192 case 'n': 193 nflag = 1; 194 break; 195 case 't': 196 tflag = 1; 197 break; 198 case 'A': 199 if (mode) { 200 usage(); 201 /*NOTREACHED*/ 202 } 203 mode = 'a'; 204 repeat = atoi(optarg); 205 break; 206 default: 207 usage(); 208 } 209 210 argc -= optind; 211 argv += optind; 212 213 switch (mode) { 214 case 'a': 215 case 'c': 216 if (argc != 0) { 217 usage(); 218 /*NOTREACHED*/ 219 } 220 dump(0, mode == 'c'); 221 break; 222 case 'd': 223 if (argc != 0) { 224 usage(); 225 /*NOTREACHED*/ 226 } 227 (void)delete(arg); 228 break; 229 case 'I': 230 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 231 if (argc > 1) { 232 usage(); 233 /*NOTREACHED*/ 234 } else if (argc == 1) { 235 if (strcmp(*argv, "delete") == 0 || 236 if_nametoindex(*argv)) 237 setdefif(*argv); 238 else 239 errx(1, "invalid interface %s", *argv); 240 } 241 getdefif(); /* always call it to print the result */ 242 break; 243 #else 244 errx(1, "not supported yet"); 245 /*NOTREACHED*/ 246 #endif 247 case 'p': 248 if (argc != 0) { 249 usage(); 250 /*NOTREACHED*/ 251 } 252 plist(); 253 break; 254 case 'i': 255 ifinfo(arg, argc, argv); 256 break; 257 case 'r': 258 if (argc != 0) { 259 usage(); 260 /*NOTREACHED*/ 261 } 262 rtrlist(); 263 break; 264 case 's': 265 if (argc < 2 || argc > 4) 266 usage(); 267 return(set(argc, argv) ? 1 : 0); 268 case 'H': 269 if (argc != 0) { 270 usage(); 271 /*NOTREACHED*/ 272 } 273 harmonize_rtr(); 274 break; 275 case 'P': 276 if (argc != 0) { 277 usage(); 278 /*NOTREACHED*/ 279 } 280 pfx_flush(); 281 break; 282 case 'R': 283 if (argc != 0) { 284 usage(); 285 /*NOTREACHED*/ 286 } 287 rtr_flush(); 288 break; 289 case 0: 290 if (argc != 1) { 291 usage(); 292 /*NOTREACHED*/ 293 } 294 get(argv[0]); 295 break; 296 } 297 return(0); 298 } 299 300 static void 301 getsocket(void) 302 { 303 if (my_s < 0) { 304 my_s = socket(PF_ROUTE, SOCK_RAW, 0); 305 if (my_s < 0) 306 err(1, "socket"); 307 } 308 } 309 310 #ifdef notdef 311 static struct sockaddr_in6 so_mask = { 312 .sin6_len = sizeof(so_mask), 313 .sin6_family = AF_INET6 314 }; 315 #endif 316 static struct sockaddr_in6 blank_sin = { 317 .sin6_len = sizeof(blank_sin), 318 .sin6_family = AF_INET6 319 }; 320 static struct sockaddr_in6 sin_m; 321 static struct sockaddr_dl blank_sdl = { 322 .sdl_len = sizeof(blank_sdl), 323 .sdl_family = AF_LINK, 324 }; 325 static struct sockaddr_dl sdl_m; 326 static int expire_time, flags, found_entry; 327 static struct { 328 struct rt_msghdr m_rtm; 329 char m_space[512]; 330 } m_rtmsg; 331 332 /* 333 * Set an individual neighbor cache entry 334 */ 335 static int 336 set(int argc, char **argv) 337 { 338 register struct sockaddr_in6 *mysin = &sin_m; 339 register struct sockaddr_dl *sdl; 340 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 341 struct addrinfo hints, *res; 342 int gai_error; 343 u_char *ea; 344 char *host = argv[0], *eaddr = argv[1]; 345 346 getsocket(); 347 argc -= 2; 348 argv += 2; 349 sdl_m = blank_sdl; 350 sin_m = blank_sin; 351 352 (void)memset(&hints, 0, sizeof(hints)); 353 hints.ai_family = AF_INET6; 354 gai_error = getaddrinfo(host, NULL, &hints, &res); 355 if (gai_error) { 356 warnx("%s: %s\n", host, gai_strerror(gai_error)); 357 return 1; 358 } 359 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 360 inet6_putscopeid(mysin, INET6_IS_ADDR_LINKLOCAL); 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 *)(RT_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 inet6_putscopeid(mysin, INET6_IS_ADDR_LINKLOCAL); 428 dump(&mysin->sin6_addr, 0); 429 if (found_entry == 0) { 430 (void)getnameinfo((struct sockaddr *)(void *)mysin, 431 (socklen_t)mysin->sin6_len, 432 host_buf, sizeof(host_buf), NULL ,0, 433 (nflag ? NI_NUMERICHOST : 0)); 434 errx(1, "%s (%s) -- no entry", host, host_buf); 435 } 436 } 437 438 /* 439 * Delete a neighbor cache entry 440 */ 441 static int 442 delete(char *host) 443 { 444 struct sockaddr_in6 *mysin = &sin_m; 445 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 446 struct sockaddr_dl *sdl; 447 struct addrinfo hints, *res; 448 int gai_error; 449 450 getsocket(); 451 sin_m = blank_sin; 452 453 bzero(&hints, sizeof(hints)); 454 hints.ai_family = AF_INET6; 455 gai_error = getaddrinfo(host, NULL, &hints, &res); 456 if (gai_error) { 457 warnx("%s: %s\n", host, gai_strerror(gai_error)); 458 return 1; 459 } 460 mysin->sin6_addr = ((struct sockaddr_in6 *)(void *)res->ai_addr)->sin6_addr; 461 inet6_putscopeid(mysin, INET6_IS_ADDR_LINKLOCAL); 462 if (rtmsg(RTM_GET) < 0) 463 errx(1, "RTM_GET(%s) failed", host); 464 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 465 sdl = (struct sockaddr_dl *)(void *)(RT_ROUNDUP(mysin->sin6_len) + 466 (char *)(void *)mysin); 467 if (IN6_ARE_ADDR_EQUAL(&mysin->sin6_addr, &sin_m.sin6_addr)) { 468 if (sdl->sdl_family == AF_LINK && 469 (rtm->rtm_flags & RTF_LLINFO) && 470 !(rtm->rtm_flags & RTF_GATEWAY)) { 471 goto delete; 472 } 473 /* 474 * IPv4 arp command retries with sin_other = SIN_PROXY here. 475 */ 476 warnx("delete: cannot delete non-NDP entry"); 477 return 1; 478 } 479 480 delete: 481 if (sdl->sdl_family != AF_LINK) { 482 (void)printf("cannot locate %s\n", host); 483 return (1); 484 } 485 if (rtmsg(RTM_DELETE) == 0) { 486 struct sockaddr_in6 s6 = *mysin; /* XXX: for safety */ 487 488 mysin->sin6_scope_id = 0; 489 inet6_putscopeid(mysin, INET6_IS_ADDR_LINKLOCAL); 490 (void)getnameinfo((struct sockaddr *)(void *)&s6, 491 (socklen_t)s6.sin6_len, host_buf, 492 sizeof(host_buf), NULL, 0, 493 (nflag ? NI_NUMERICHOST : 0)); 494 (void)printf("%s (%s) deleted\n", host, host_buf); 495 } 496 497 return 0; 498 } 499 500 #define W_ADDR 36 501 #define W_LL 17 502 #define W_IF 6 503 504 /* 505 * Dump the entire neighbor cache 506 */ 507 static void 508 dump(struct in6_addr *addr, int cflag) 509 { 510 int mib[6]; 511 size_t needed; 512 char *lim, *buf, *next; 513 struct rt_msghdr *rtm; 514 struct sockaddr_in6 *mysin; 515 struct sockaddr_dl *sdl; 516 struct in6_nbrinfo *nbi; 517 struct timeval tim; 518 int addrwidth; 519 int llwidth; 520 int ifwidth; 521 char flgbuf[8]; 522 const char *ifname; 523 524 /* Print header */ 525 if (!tflag && !cflag) 526 (void)printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 527 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 528 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 529 530 again:; 531 mib[0] = CTL_NET; 532 mib[1] = PF_ROUTE; 533 mib[2] = 0; 534 mib[3] = AF_INET6; 535 mib[4] = NET_RT_FLAGS; 536 mib[5] = RTF_LLINFO; 537 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 538 err(1, "sysctl(PF_ROUTE estimate)"); 539 if (needed > 0) { 540 if ((buf = malloc(needed)) == NULL) 541 err(1, "malloc"); 542 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 543 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 544 lim = buf + needed; 545 } else 546 buf = lim = NULL; 547 548 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 549 int isrouter = 0, prbs = 0; 550 551 rtm = (struct rt_msghdr *)(void *)next; 552 mysin = (struct sockaddr_in6 *)(void *)(rtm + 1); 553 sdl = (struct sockaddr_dl *)(void *)((char *)(void *)mysin + RT_ROUNDUP(mysin->sin6_len)); 554 555 /* 556 * Some OSes can produce a route that has the LINK flag but 557 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 558 * and BSD/OS, where xx is not the interface identifier on 559 * lo0). Such routes entry would annoy getnbrinfo() below, 560 * so we skip them. 561 * XXX: such routes should have the GATEWAY flag, not the 562 * LINK flag. However, there is rotten routing software 563 * that advertises all routes that have the GATEWAY flag. 564 * Thus, KAME kernel intentionally does not set the LINK flag. 565 * What is to be fixed is not ndp, but such routing software 566 * (and the kernel workaround)... 567 */ 568 if (sdl->sdl_family != AF_LINK) 569 continue; 570 571 if (!(rtm->rtm_flags & RTF_HOST)) 572 continue; 573 574 if (addr) { 575 if (!IN6_ARE_ADDR_EQUAL(addr, &mysin->sin6_addr)) 576 continue; 577 found_entry = 1; 578 } else if (IN6_IS_ADDR_MULTICAST(&mysin->sin6_addr)) 579 continue; 580 if (IN6_IS_ADDR_LINKLOCAL(&mysin->sin6_addr) || 581 IN6_IS_ADDR_MC_LINKLOCAL(&mysin->sin6_addr)) { 582 uint16_t scopeid = mysin->sin6_scope_id; 583 inet6_getscopeid(mysin, INET6_IS_ADDR_LINKLOCAL| 584 INET6_IS_ADDR_MC_LINKLOCAL); 585 if (scopeid == 0) 586 mysin->sin6_scope_id = sdl->sdl_index; 587 } 588 (void)getnameinfo((struct sockaddr *)(void *)mysin, 589 (socklen_t)mysin->sin6_len, 590 host_buf, sizeof(host_buf), NULL, 0, 591 (nflag ? NI_NUMERICHOST : 0)); 592 if (cflag) { 593 #ifdef RTF_WASCLONED 594 if (rtm->rtm_flags & RTF_WASCLONED) 595 (void)delete(host_buf); 596 #elif defined(RTF_CLONED) 597 if (rtm->rtm_flags & RTF_CLONED) 598 (void)delete(host_buf); 599 #else 600 (void)delete(host_buf); 601 #endif 602 continue; 603 } 604 (void)gettimeofday(&tim, 0); 605 if (tflag) 606 ts_print(&tim); 607 608 addrwidth = strlen(host_buf); 609 if (addrwidth < W_ADDR) 610 addrwidth = W_ADDR; 611 llwidth = strlen(ether_str(sdl)); 612 if (W_ADDR + W_LL - addrwidth > llwidth) 613 llwidth = W_ADDR + W_LL - addrwidth; 614 ifname = if_indextoname((unsigned int)sdl->sdl_index, ifix_buf); 615 if (!ifname) 616 ifname = "?"; 617 ifwidth = strlen(ifname); 618 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 619 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 620 621 (void)printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, 622 host_buf, llwidth, llwidth, ether_str(sdl), ifwidth, 623 ifwidth, ifname); 624 625 /* Print neighbor discovery specific informations */ 626 nbi = getnbrinfo(&mysin->sin6_addr, 627 (unsigned int)sdl->sdl_index, 1); 628 if (nbi) { 629 if (nbi->expire > tim.tv_sec) { 630 (void)printf(" %-9.9s", 631 sec2str(nbi->expire - tim.tv_sec)); 632 } else if (nbi->expire == 0) 633 (void)printf(" %-9.9s", "permanent"); 634 else 635 (void)printf(" %-9.9s", "expired"); 636 637 switch (nbi->state) { 638 case ND6_LLINFO_NOSTATE: 639 (void)printf(" N"); 640 break; 641 #ifdef ND6_LLINFO_WAITDELETE 642 case ND6_LLINFO_WAITDELETE: 643 (void)printf(" W"); 644 break; 645 #endif 646 case ND6_LLINFO_INCOMPLETE: 647 (void)printf(" I"); 648 break; 649 case ND6_LLINFO_REACHABLE: 650 (void)printf(" R"); 651 break; 652 case ND6_LLINFO_STALE: 653 (void)printf(" S"); 654 break; 655 case ND6_LLINFO_DELAY: 656 (void)printf(" D"); 657 break; 658 case ND6_LLINFO_PROBE: 659 (void)printf(" P"); 660 break; 661 default: 662 (void)printf(" ?"); 663 break; 664 } 665 666 isrouter = nbi->isrouter; 667 prbs = nbi->asked; 668 } else { 669 warnx("failed to get neighbor information"); 670 (void)printf(" "); 671 } 672 673 /* 674 * other flags. R: router, P: proxy, W: ?? 675 */ 676 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 677 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s", 678 isrouter ? "R" : "", 679 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 680 } else { 681 mysin = (struct sockaddr_in6 *)(void *) 682 (sdl->sdl_len + (char *)(void *)sdl); 683 #if 0 /* W and P are mystery even for us */ 684 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 685 isrouter ? "R" : "", 686 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 687 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 688 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 689 #else 690 (void)snprintf(flgbuf, sizeof(flgbuf), "%s%s", 691 isrouter ? "R" : "", 692 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 693 #endif 694 } 695 (void)printf(" %s", flgbuf); 696 697 if (prbs) 698 (void)printf(" %d", prbs); 699 700 (void)printf("\n"); 701 } 702 if (buf != NULL) 703 free(buf); 704 705 if (repeat) { 706 (void)printf("\n"); 707 (void)fflush(stdout); 708 (void)sleep(repeat); 709 goto again; 710 } 711 } 712 713 static struct in6_nbrinfo * 714 getnbrinfo(struct in6_addr *addr, unsigned int ifindex, int warning) 715 { 716 static struct in6_nbrinfo nbi; 717 int s; 718 719 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 720 err(1, "socket"); 721 722 (void)memset(&nbi, 0, sizeof(nbi)); 723 (void)if_indextoname(ifindex, nbi.ifname); 724 nbi.addr = *addr; 725 if (ioctl(s, SIOCGNBRINFO_IN6, &nbi) < 0) { 726 if (warning) 727 warn("ioctl(SIOCGNBRINFO_IN6)"); 728 (void)close(s); 729 return(NULL); 730 } 731 732 (void)close(s); 733 return(&nbi); 734 } 735 736 static char * 737 ether_str(struct sockaddr_dl *sdl) 738 { 739 static char hbuf[NI_MAXHOST]; 740 741 if (sdl->sdl_alen) { 742 if (getnameinfo((struct sockaddr *)(void *)sdl, 743 (socklen_t)sdl->sdl_len, 744 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) 745 (void)snprintf(hbuf, sizeof(hbuf), "<invalid>"); 746 } else 747 (void)snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 748 749 return(hbuf); 750 } 751 752 static int 753 ndp_ether_aton(char *a, u_char *n) 754 { 755 int i, o[6]; 756 757 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 758 &o[3], &o[4], &o[5]); 759 if (i != 6) { 760 warnx("invalid Ethernet address '%s'", a); 761 return (1); 762 } 763 for (i = 0; i < 6; i++) 764 n[i] = o[i]; 765 return (0); 766 } 767 768 static void 769 usage(void) 770 { 771 const char *pn = getprogname(); 772 773 (void)fprintf(stderr, "Usage: %s [-nt] hostname\n", pn); 774 (void)fprintf(stderr, 775 " %s [-nt] -a | -c | -p | -r | -H | -P | -R\n", pn); 776 (void)fprintf(stderr, " %s [-nt] -A wait\n", pn); 777 (void)fprintf(stderr, " %s [-nt] -d hostname\n", pn); 778 (void)fprintf(stderr, " %s [-nt] -f filename\n", pn); 779 (void)fprintf(stderr, " %s [-nt] -i interface [flags...]\n", pn); 780 #ifdef SIOCSDEFIFACE_IN6 781 (void)fprintf(stderr, " %s [-nt] -I [interface|delete]\n", pn); 782 #endif 783 (void)fprintf(stderr, 784 " %s [-nt] -s nodename etheraddr [temp] [proxy]\n", pn); 785 exit(1); 786 } 787 788 static int 789 rtmsg(int cmd) 790 { 791 static int seq; 792 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 793 register char *cp = m_rtmsg.m_space; 794 register int l; 795 796 errno = 0; 797 if (cmd == RTM_DELETE) 798 goto doit; 799 (void)memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 800 rtm->rtm_flags = flags; 801 rtm->rtm_version = RTM_VERSION; 802 803 switch (cmd) { 804 default: 805 errx(1, "internal wrong cmd"); 806 /*NOTREACHED*/ 807 case RTM_ADD: 808 rtm->rtm_addrs |= RTA_GATEWAY; 809 if (expire_time) { 810 rtm->rtm_rmx.rmx_expire = expire_time; 811 rtm->rtm_inits = RTV_EXPIRE; 812 } 813 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 814 #ifdef notdef /* we don't support ipv6addr/128 type proxying. */ 815 if (rtm->rtm_flags & RTF_ANNOUNCE) { 816 rtm->rtm_flags &= ~RTF_HOST; 817 rtm->rtm_addrs |= RTA_NETMASK; 818 } 819 #endif 820 /* FALLTHROUGH */ 821 case RTM_GET: 822 rtm->rtm_addrs |= RTA_DST; 823 } 824 #define NEXTADDR(w, s) \ 825 if (rtm->rtm_addrs & (w)) { \ 826 (void)memcpy(cp, &s, sizeof(s)); \ 827 RT_ADVANCE(cp, (struct sockaddr *)(void *)&s); \ 828 } 829 830 NEXTADDR(RTA_DST, sin_m); 831 NEXTADDR(RTA_GATEWAY, sdl_m); 832 #ifdef notdef /* we don't support ipv6addr/128 type proxying. */ 833 (void)memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 834 NEXTADDR(RTA_NETMASK, so_mask); 835 #endif 836 837 rtm->rtm_msglen = cp - (char *)(void *)&m_rtmsg; 838 doit: 839 l = rtm->rtm_msglen; 840 rtm->rtm_seq = ++seq; 841 rtm->rtm_type = cmd; 842 if (write(my_s, &m_rtmsg, (size_t)l) == -1) { 843 if (errno != ESRCH || cmd != RTM_DELETE) 844 err(1, "writing to routing socket"); 845 } 846 do { 847 l = read(my_s, &m_rtmsg, sizeof(m_rtmsg)); 848 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 849 if (l < 0) 850 warn("read from routing socket"); 851 return (0); 852 } 853 854 static void 855 ifinfo(char *ifname, int argc, char **argv) 856 { 857 struct in6_ndireq nd; 858 int i, s; 859 u_int32_t newflags; 860 #ifdef IPV6CTL_USETEMPADDR 861 u_int8_t nullbuf[8]; 862 #endif 863 864 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 865 err(1, "socket"); 866 (void)memset(&nd, 0, sizeof(nd)); 867 (void)strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 868 if (ioctl(s, SIOCGIFINFO_IN6, &nd) < 0) 869 err(1, "ioctl(SIOCGIFINFO_IN6)"); 870 #define ND nd.ndi 871 newflags = ND.flags; 872 for (i = 0; i < argc; i++) { 873 int clear = 0; 874 char *cp = argv[i]; 875 876 if (*cp == '-') { 877 clear = 1; 878 cp++; 879 } 880 881 #define SETFLAG(s, f) \ 882 do {\ 883 if (strcmp(cp, (s)) == 0) {\ 884 if (clear)\ 885 newflags &= ~(f);\ 886 else\ 887 newflags |= (f);\ 888 }\ 889 } while (/*CONSTCOND*/0) 890 /* 891 * XXX: this macro is not 100% correct, in that it matches "nud" against 892 * "nudbogus". But we just let it go since this is minor. 893 */ 894 #define SETVALUE(f, v) \ 895 do { \ 896 char *valptr; \ 897 unsigned long newval; \ 898 v = 0; /* unspecified */ \ 899 if (strncmp(cp, f, strlen(f)) == 0) { \ 900 valptr = strchr(cp, '='); \ 901 if (valptr == NULL) \ 902 err(1, "syntax error in %s field", (f)); \ 903 errno = 0; \ 904 newval = strtoul(++valptr, NULL, 0); \ 905 if (errno) \ 906 err(1, "syntax error in %s's value", (f)); \ 907 v = newval; \ 908 } \ 909 } while (/*CONSTCOND*/0) 910 911 #ifdef ND6_IFF_IFDISABLED 912 SETFLAG("disabled", ND6_IFF_IFDISABLED); 913 #endif 914 SETFLAG("nud", ND6_IFF_PERFORMNUD); 915 #ifdef ND6_IFF_ACCEPT_RTADV 916 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 917 #endif 918 #ifdef ND6_IFF_OVERRIDE_RTADV 919 SETFLAG("override_rtadv", ND6_IFF_OVERRIDE_RTADV); 920 #endif 921 #ifdef ND6_IFF_AUTO_LINKLOCAL 922 SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL); 923 #endif 924 #ifdef ND6_IFF_PREFER_SOURCE 925 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 926 #endif 927 #ifdef ND6_IFF_DONT_SET_IFROUTE 928 SETFLAG("dont_set_ifroute", ND6_IFF_DONT_SET_IFROUTE); 929 #endif 930 SETVALUE("basereachable", ND.basereachable); 931 SETVALUE("retrans", ND.retrans); 932 SETVALUE("curhlim", ND.chlim); 933 934 ND.flags = newflags; 935 #ifdef SIOCSIFINFO_IN6 936 if (ioctl(s, SIOCSIFINFO_IN6, &nd) < 0) 937 err(1, "ioctl(SIOCSIFINFO_IN6)"); 938 #else 939 if (ioctl(s, SIOCSIFINFO_FLAGS, &nd) < 0) 940 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 941 #endif 942 #undef SETFLAG 943 #undef SETVALUE 944 } 945 946 if (!ND.initialized) 947 errx(1, "%s: not initialized yet", ifname); 948 949 if (ioctl(s, SIOCGIFINFO_IN6, &nd) < 0) 950 err(1, "ioctl(SIOCGIFINFO_IN6)"); 951 (void)printf("linkmtu=%d", ND.linkmtu); 952 (void)printf(", maxmtu=%d", ND.maxmtu); 953 (void)printf(", curhlim=%d", ND.chlim); 954 (void)printf(", basereachable=%ds%dms", 955 ND.basereachable / 1000, ND.basereachable % 1000); 956 (void)printf(", reachable=%ds", ND.reachable); 957 (void)printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 958 #ifdef IPV6CTL_USETEMPADDR 959 (void)memset(nullbuf, 0, sizeof(nullbuf)); 960 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 961 int j; 962 u_int8_t *rbuf; 963 964 for (i = 0; i < 3; i++) { 965 switch (i) { 966 case 0: 967 (void)printf("\nRandom seed(0): "); 968 rbuf = ND.randomseed0; 969 break; 970 case 1: 971 (void)printf("\nRandom seed(1): "); 972 rbuf = ND.randomseed1; 973 break; 974 case 2: 975 (void)printf("\nRandom ID: "); 976 rbuf = ND.randomid; 977 break; 978 default: 979 errx(1, "impossible case for tempaddr display"); 980 } 981 for (j = 0; j < 8; j++) 982 (void)printf("%02x", rbuf[j]); 983 } 984 } 985 #endif 986 if (ND.flags) { 987 (void)printf("\nFlags: "); 988 if ((ND.flags & ND6_IFF_PERFORMNUD)) 989 (void)printf("nud "); 990 #ifdef ND6_IFF_IFDISABLED 991 if ((ND.flags & ND6_IFF_IFDISABLED)) 992 (void)printf("disabled "); 993 #endif 994 #ifdef ND6_IFF_ACCEPT_RTADV 995 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 996 (void)printf("accept_rtadv "); 997 #endif 998 #ifdef ND6_IFF_OVERRIDE_RTADV 999 if ((ND.flags & ND6_IFF_OVERRIDE_RTADV)) 1000 (void)printf("override_rtadv "); 1001 #endif 1002 #ifdef ND6_IFF_AUTO_LINKLOCAL 1003 if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL)) 1004 (void)printf("auto_linklocal "); 1005 #endif 1006 #ifdef ND6_IFF_PREFER_SOURCE 1007 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1008 (void)printf("prefer_source "); 1009 #endif 1010 } 1011 (void)putc('\n', stdout); 1012 #undef ND 1013 1014 (void)close(s); 1015 } 1016 1017 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1018 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1019 #endif 1020 1021 static void 1022 rtrlist(void) 1023 { 1024 #ifdef ICMPV6CTL_ND6_DRLIST 1025 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1026 char *buf; 1027 struct in6_defrouter *p, *ep; 1028 size_t l; 1029 struct timeval tim; 1030 1031 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1032 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1033 /*NOTREACHED*/ 1034 } 1035 if (l == 0) 1036 return; 1037 buf = malloc(l); 1038 if (!buf) { 1039 err(1, "malloc"); 1040 /*NOTREACHED*/ 1041 } 1042 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1043 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1044 /*NOTREACHED*/ 1045 } 1046 1047 ep = (struct in6_defrouter *)(void *)(buf + l); 1048 for (p = (struct in6_defrouter *)(void *)buf; p < ep; p++) { 1049 int rtpref; 1050 1051 if (getnameinfo((struct sockaddr *)(void *)&p->rtaddr, 1052 (socklen_t)p->rtaddr.sin6_len, host_buf, sizeof(host_buf), 1053 NULL, 0, (nflag ? NI_NUMERICHOST : 0)) != 0) 1054 (void)strlcpy(host_buf, "?", sizeof(host_buf)); 1055 1056 (void)printf("%s if=%s", host_buf, 1057 if_indextoname((unsigned int)p->if_index, ifix_buf)); 1058 (void)printf(", flags=%s%s", 1059 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1060 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1061 rtpref = ((uint32_t)(p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1062 (void)printf(", pref=%s", rtpref_str[rtpref]); 1063 1064 (void)gettimeofday(&tim, 0); 1065 if (p->expire == 0) 1066 (void)printf(", expire=Never\n"); 1067 else 1068 (void)printf(", expire=%s\n", 1069 sec2str((time_t)(p->expire - tim.tv_sec))); 1070 } 1071 free(buf); 1072 #else 1073 struct in6_drlist dr; 1074 int s, i; 1075 struct timeval time; 1076 1077 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1078 err(1, "socket"); 1079 /* NOTREACHED */ 1080 } 1081 (void)memset(&dr, 0, sizeof(dr)); 1082 (void)strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1083 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1084 err(1, "ioctl(SIOCGDRLST_IN6)"); 1085 /* NOTREACHED */ 1086 } 1087 #define DR dr.defrouter[i] 1088 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1089 struct sockaddr_in6 sin6; 1090 1091 (void)memset(&sin6, 0, sizeof(sin6)); 1092 sin6.sin6_family = AF_INET6; 1093 sin6.sin6_len = sizeof(sin6); 1094 sin6.sin6_addr = DR.rtaddr; 1095 (void)getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 1096 host_buf, sizeof(host_buf), NULL, 0, 1097 (nflag ? NI_NUMERICHOST : 0)); 1098 1099 (void)printf("%s if=%s", host_buf, 1100 if_indextoname(DR.if_index, ifix_buf)); 1101 (void)printf(", flags=%s%s", 1102 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1103 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1104 gettimeofday(&time, 0); 1105 if (DR.expire == 0) 1106 (void)printf(", expire=Never\n"); 1107 else 1108 (void)printf(", expire=%s\n", 1109 sec2str(DR.expire - time.tv_sec)); 1110 } 1111 #undef DR 1112 (void)close(s); 1113 #endif 1114 } 1115 1116 static void 1117 plist(void) 1118 { 1119 #ifdef ICMPV6CTL_ND6_PRLIST 1120 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1121 char *buf, *p, *ep; 1122 struct in6_prefix pfx; 1123 size_t l; 1124 struct timeval tim; 1125 const int niflags = NI_NUMERICHOST; 1126 int ninflags = nflag ? NI_NUMERICHOST : 0; 1127 char namebuf[NI_MAXHOST]; 1128 1129 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1130 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1131 /*NOTREACHED*/ 1132 } 1133 buf = malloc(l); 1134 if (!buf) { 1135 err(1, "malloc"); 1136 /*NOTREACHED*/ 1137 } 1138 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1139 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1140 /*NOTREACHED*/ 1141 } 1142 1143 ep = buf + l; 1144 for (p = buf; p < ep; ) { 1145 memcpy(&pfx, p, sizeof(pfx)); 1146 p += sizeof(pfx); 1147 1148 if (getnameinfo((struct sockaddr*)&pfx.prefix, 1149 (socklen_t)pfx.prefix.sin6_len, namebuf, sizeof(namebuf), 1150 NULL, 0, niflags) != 0) 1151 (void)strlcpy(namebuf, "?", sizeof(namebuf)); 1152 (void)printf("%s/%d if=%s\n", namebuf, pfx.prefixlen, 1153 if_indextoname((unsigned int)pfx.if_index, ifix_buf)); 1154 1155 (void)gettimeofday(&tim, 0); 1156 /* 1157 * meaning of fields, especially flags, is very different 1158 * by origin. notify the difference to the users. 1159 */ 1160 (void)printf("flags=%s%s%s%s%s", 1161 pfx.raflags.onlink ? "L" : "", 1162 pfx.raflags.autonomous ? "A" : "", 1163 (pfx.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1164 (pfx.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1165 #ifdef NDPRF_HOME 1166 (pfx.flags & NDPRF_HOME) != 0 ? "H" : "" 1167 #else 1168 "" 1169 #endif 1170 ); 1171 if (pfx.vltime == ND6_INFINITE_LIFETIME) 1172 (void)printf(" vltime=infinity"); 1173 else 1174 (void)printf(" vltime=%lu", (unsigned long)pfx.vltime); 1175 if (pfx.pltime == ND6_INFINITE_LIFETIME) 1176 (void)printf(", pltime=infinity"); 1177 else 1178 (void)printf(", pltime=%lu", (unsigned long)pfx.pltime); 1179 if (pfx.expire == 0) 1180 (void)printf(", expire=Never"); 1181 else if (pfx.expire >= tim.tv_sec) 1182 (void)printf(", expire=%s", 1183 sec2str(pfx.expire - tim.tv_sec)); 1184 else 1185 (void)printf(", expired"); 1186 (void)printf(", ref=%d", pfx.refcnt); 1187 (void)printf("\n"); 1188 /* 1189 * "advertising router" list is meaningful only if the prefix 1190 * information is from RA. 1191 */ 1192 if (pfx.advrtrs) { 1193 int j; 1194 struct sockaddr_in6 sin6; 1195 1196 (void)printf(" advertised by\n"); 1197 for (j = 0; j < pfx.advrtrs && p <= ep; j++) { 1198 struct in6_nbrinfo *nbi; 1199 1200 memcpy(&sin6, p, sizeof(sin6)); 1201 p += sizeof(sin6); 1202 1203 if (getnameinfo((struct sockaddr *)&sin6, 1204 (socklen_t)sin6.sin6_len, namebuf, 1205 sizeof(namebuf), NULL, 0, ninflags) != 0) 1206 (void)strlcpy(namebuf, "?", sizeof(namebuf)); 1207 (void)printf(" %s", namebuf); 1208 1209 nbi = getnbrinfo(&sin6.sin6_addr, 1210 (unsigned int)pfx.if_index, 0); 1211 if (nbi) { 1212 switch (nbi->state) { 1213 case ND6_LLINFO_REACHABLE: 1214 case ND6_LLINFO_STALE: 1215 case ND6_LLINFO_DELAY: 1216 case ND6_LLINFO_PROBE: 1217 (void)printf(" (reachable)\n"); 1218 break; 1219 default: 1220 (void)printf(" (unreachable)\n"); 1221 } 1222 } else 1223 (void)printf(" (no neighbor state)\n"); 1224 } 1225 } else 1226 (void)printf(" No advertising router\n"); 1227 } 1228 free(buf); 1229 #else 1230 struct in6_prlist pr; 1231 int s, i; 1232 struct timeval time; 1233 1234 (void)gettimeofday(&time, 0); 1235 1236 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1237 err(1, "socket"); 1238 /* NOTREACHED */ 1239 } 1240 (void)memset(&pr, 0, sizeof(pr)); 1241 (void)strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1242 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1243 err(1, "ioctl(SIOCGPRLST_IN6)"); 1244 /* NOTREACHED */ 1245 } 1246 #define PR pr.prefix[i] 1247 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1248 struct sockaddr_in6 p6; 1249 char namebuf[NI_MAXHOST]; 1250 int niflags; 1251 1252 #ifdef NDPRF_ONLINK 1253 p6 = PR.prefix; 1254 #else 1255 (void)memset(&p6, 0, sizeof(p6)); 1256 p6.sin6_family = AF_INET6; 1257 p6.sin6_len = sizeof(p6); 1258 p6.sin6_addr = PR.prefix; 1259 #endif 1260 1261 niflags = NI_NUMERICHOST; 1262 if (getnameinfo((struct sockaddr *)&p6, 1263 sizeof(p6), namebuf, sizeof(namebuf), 1264 NULL, 0, niflags)) { 1265 warnx("getnameinfo failed"); 1266 continue; 1267 } 1268 (void)printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1269 if_indextoname(PR.if_index, ifix_buf)); 1270 1271 (void)gettimeofday(&time, 0); 1272 /* 1273 * meaning of fields, especially flags, is very different 1274 * by origin. notify the difference to the users. 1275 */ 1276 #if 0 1277 (void)printf(" %s", 1278 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1279 #endif 1280 #ifdef NDPRF_ONLINK 1281 (void)printf("flags=%s%s%s%s%s", 1282 PR.raflags.onlink ? "L" : "", 1283 PR.raflags.autonomous ? "A" : "", 1284 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1285 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1286 #ifdef NDPRF_HOME 1287 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1288 #else 1289 "" 1290 #endif 1291 ); 1292 #else 1293 (void)printf("flags=%s%s", 1294 PR.raflags.onlink ? "L" : "", 1295 PR.raflags.autonomous ? "A" : ""); 1296 #endif 1297 if (PR.vltime == ND6_INFINITE_LIFETIME) 1298 (void)printf(" vltime=infinity"); 1299 else 1300 (void)printf(" vltime=%lu", PR.vltime); 1301 if (PR.pltime == ND6_INFINITE_LIFETIME) 1302 (void)printf(", pltime=infinity"); 1303 else 1304 (void)printf(", pltime=%lu", PR.pltime); 1305 if (PR.expire == 0) 1306 (void)printf(", expire=Never"); 1307 else if (PR.expire >= time.tv_sec) 1308 (void)printf(", expire=%s", 1309 sec2str(PR.expire - time.tv_sec)); 1310 else 1311 (void)printf(", expired"); 1312 #ifdef NDPRF_ONLINK 1313 (void)printf(", ref=%d", PR.refcnt); 1314 #endif 1315 #if 0 1316 switch (PR.origin) { 1317 case PR_ORIG_RA: 1318 (void)printf(", origin=RA"); 1319 break; 1320 case PR_ORIG_RR: 1321 (void)printf(", origin=RR"); 1322 break; 1323 case PR_ORIG_STATIC: 1324 (void)printf(", origin=static"); 1325 break; 1326 case PR_ORIG_KERNEL: 1327 (void)printf(", origin=kernel"); 1328 break; 1329 default: 1330 (void)printf(", origin=?"); 1331 break; 1332 } 1333 #endif 1334 (void)printf("\n"); 1335 /* 1336 * "advertising router" list is meaningful only if the prefix 1337 * information is from RA. 1338 */ 1339 if (0 && /* prefix origin is almost obsolted */ 1340 PR.origin != PR_ORIG_RA) 1341 ; 1342 else if (PR.advrtrs) { 1343 int j; 1344 (void)printf(" advertised by\n"); 1345 for (j = 0; j < PR.advrtrs; j++) { 1346 struct sockaddr_in6 sin6; 1347 struct in6_nbrinfo *nbi; 1348 1349 bzero(&sin6, sizeof(sin6)); 1350 sin6.sin6_family = AF_INET6; 1351 sin6.sin6_len = sizeof(sin6); 1352 sin6.sin6_addr = PR.advrtr[j]; 1353 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1354 (void)getnameinfo((struct sockaddr *)&sin6, 1355 sin6.sin6_len, host_buf, 1356 sizeof(host_buf), NULL, 0, 1357 (nflag ? NI_NUMERICHOST : 0)); 1358 (void)printf(" %s", host_buf); 1359 1360 nbi = getnbrinfo(&sin6.sin6_addr, 1361 PR.if_index, 0); 1362 if (nbi) { 1363 switch (nbi->state) { 1364 case ND6_LLINFO_REACHABLE: 1365 case ND6_LLINFO_STALE: 1366 case ND6_LLINFO_DELAY: 1367 case ND6_LLINFO_PROBE: 1368 (void)printf(" (reachable)\n"); 1369 break; 1370 default: 1371 (void)printf(" (unreachable)\n"); 1372 } 1373 } else 1374 (void)printf(" (no neighbor state)\n"); 1375 } 1376 if (PR.advrtrs > DRLSTSIZ) 1377 (void)printf(" and %d routers\n", 1378 PR.advrtrs - DRLSTSIZ); 1379 } else 1380 (void)printf(" No advertising router\n"); 1381 } 1382 #undef PR 1383 (void)close(s); 1384 #endif 1385 } 1386 1387 static void 1388 pfx_flush(void) 1389 { 1390 char dummyif[IFNAMSIZ+8]; 1391 int s; 1392 1393 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1394 err(1, "socket"); 1395 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1396 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1397 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1398 (void)close(s); 1399 } 1400 1401 static void 1402 rtr_flush(void) 1403 { 1404 char dummyif[IFNAMSIZ+8]; 1405 int s; 1406 1407 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1408 err(1, "socket"); 1409 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1410 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1411 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1412 1413 (void)close(s); 1414 } 1415 1416 static void 1417 harmonize_rtr(void) 1418 { 1419 char dummyif[IFNAMSIZ+8]; 1420 int s; 1421 1422 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1423 err(1, "socket"); 1424 (void)strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1425 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1426 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1427 1428 (void)close(s); 1429 } 1430 1431 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1432 static void 1433 setdefif(char *ifname) 1434 { 1435 struct in6_ndifreq ndifreq; 1436 unsigned int ifindex; 1437 int s; 1438 1439 if (strcasecmp(ifname, "delete") == 0) 1440 ifindex = 0; 1441 else { 1442 if ((ifindex = if_nametoindex(ifname)) == 0) 1443 err(1, "failed to resolve i/f index for %s", ifname); 1444 } 1445 1446 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1447 err(1, "socket"); 1448 1449 (void)strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1450 ndifreq.ifindex = ifindex; 1451 1452 if (ioctl(s, SIOCSDEFIFACE_IN6, &ndifreq) < 0) 1453 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1454 1455 (void)close(s); 1456 } 1457 1458 static void 1459 getdefif(void) 1460 { 1461 struct in6_ndifreq ndifreq; 1462 char ifname[IFNAMSIZ+8]; 1463 int s; 1464 1465 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1466 err(1, "socket"); 1467 1468 (void)memset(&ndifreq, 0, sizeof(ndifreq)); 1469 (void)strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1470 1471 if (ioctl(s, SIOCGDEFIFACE_IN6, &ndifreq) < 0) 1472 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1473 1474 if (ndifreq.ifindex == 0) 1475 (void)printf("No default interface.\n"); 1476 else { 1477 if ((if_indextoname((unsigned int)ndifreq.ifindex, ifname)) == NULL) 1478 err(1, "failed to resolve ifname for index %lu", 1479 ndifreq.ifindex); 1480 (void)printf("ND default interface = %s\n", ifname); 1481 } 1482 1483 (void)close(s); 1484 } 1485 #endif 1486 1487 static const char * 1488 sec2str(time_t total) 1489 { 1490 static char result[256]; 1491 int days, hours, mins, secs; 1492 int first = 1; 1493 char *p = result; 1494 char *ep = &result[sizeof(result)]; 1495 int n; 1496 1497 days = total / 3600 / 24; 1498 hours = (total / 3600) % 24; 1499 mins = (total / 60) % 60; 1500 secs = total % 60; 1501 1502 if (days) { 1503 first = 0; 1504 n = snprintf(p, (size_t)(ep - p), "%dd", days); 1505 if (n < 0 || n >= ep - p) 1506 return "?"; 1507 p += n; 1508 } 1509 if (!first || hours) { 1510 first = 0; 1511 n = snprintf(p, (size_t)(ep - p), "%dh", hours); 1512 if (n < 0 || n >= ep - p) 1513 return "?"; 1514 p += n; 1515 } 1516 if (!first || mins) { 1517 first = 0; 1518 n = snprintf(p, (size_t)(ep - p), "%dm", mins); 1519 if (n < 0 || n >= ep - p) 1520 return "?"; 1521 p += n; 1522 } 1523 (void)snprintf(p, (size_t)(ep - p), "%ds", secs); 1524 1525 return(result); 1526 } 1527 1528 /* 1529 * Print the timestamp 1530 * from tcpdump/util.c 1531 */ 1532 static void 1533 ts_print(const struct timeval *tvp) 1534 { 1535 int s; 1536 1537 /* Default */ 1538 s = (tvp->tv_sec + thiszone) % 86400; 1539 (void)printf("%02d:%02d:%02d.%06u ", 1540 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1541 } 1542