ndp.c revision 287095
175295Sdes/* $FreeBSD: head/usr.sbin/ndp/ndp.c 287095 2015-08-24 05:28:23Z hrs $ */ 275295Sdes/* $KAME: ndp.c,v 1.104 2003/06/27 07:48:39 itojun Exp $ */ 375295Sdes 475295Sdes/* 575295Sdes * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. 675295Sdes * All rights reserved. 775295Sdes * 875295Sdes * Redistribution and use in source and binary forms, with or without 975295Sdes * modification, are permitted provided that the following conditions 1075295Sdes * are met: 1175295Sdes * 1. Redistributions of source code must retain the above copyright 1275295Sdes * notice, this list of conditions and the following disclaimer. 1375295Sdes * 2. Redistributions in binary form must reproduce the above copyright 1475295Sdes * notice, this list of conditions and the following disclaimer in the 1575295Sdes * documentation and/or other materials provided with the distribution. 1675295Sdes * 3. Neither the name of the project nor the names of its contributors 1775295Sdes * may be used to endorse or promote products derived from this software 1875295Sdes * without specific prior written permission. 1975295Sdes * 2075295Sdes * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 2175295Sdes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2275295Sdes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2375295Sdes * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 2475295Sdes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2575295Sdes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2675295Sdes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2775295Sdes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2875295Sdes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2975295Sdes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3075295Sdes * SUCH DAMAGE. 3175295Sdes */ 3275295Sdes/* 3375295Sdes * Copyright (c) 1984, 1993 3478073Sdes * The Regents of the University of California. All rights reserved. 3575295Sdes * 3677965Sdes * This code is derived from software contributed to Berkeley by 3784246Sdes * Sun Microsystems, Inc. 3875295Sdes * 3975295Sdes * Redistribution and use in source and binary forms, with or without 4075295Sdes * modification, are permitted provided that the following conditions 4175295Sdes * are met: 4275295Sdes * 1. Redistributions of source code must retain the above copyright 4375295Sdes * notice, this list of conditions and the following disclaimer. 4477998Sdes * 2. Redistributions in binary form must reproduce the above copyright 4575295Sdes * notice, this list of conditions and the following disclaimer in the 4675295Sdes * documentation and/or other materials provided with the distribution. 4789071Smsmith * 4. Neither the name of the University nor the names of its contributors 4884246Sdes * may be used to endorse or promote products derived from this software 4975295Sdes * without specific prior written permission. 5075295Sdes * 5175295Sdes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 5275295Sdes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 5384246Sdes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 5484246Sdes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 5584246Sdes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 5684246Sdes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 5784246Sdes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 5884246Sdes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 5984246Sdes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 6084246Sdes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 6184246Sdes * SUCH DAMAGE. 6284246Sdes */ 6375295Sdes 6484246Sdes/* 6584246Sdes * Based on: 6675295Sdes * "@(#) Copyright (c) 1984, 1993\n\ 6775295Sdes * The Regents of the University of California. All rights reserved.\n"; 6875295Sdes * 6984246Sdes * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; 7084246Sdes */ 7175295Sdes 7275295Sdes/* 7375295Sdes * ndp - display, set, delete and flush neighbor cache 7475295Sdes */ 7575295Sdes 7675295Sdes 7775295Sdes#include <sys/param.h> 7875295Sdes#include <sys/file.h> 7975295Sdes#include <sys/ioctl.h> 8075295Sdes#include <sys/socket.h> 8184246Sdes#include <sys/sysctl.h> 8284246Sdes#include <sys/time.h> 8384246Sdes#include <sys/queue.h> 8475295Sdes 8575295Sdes#include <net/if.h> 8675295Sdes#include <net/if_dl.h> 8775295Sdes#include <net/if_types.h> 8875295Sdes#include <net/route.h> 8975295Sdes 9075295Sdes#include <netinet/in.h> 9175295Sdes#include <netinet/if_ether.h> 9284246Sdes 9384386Sdes#include <netinet/icmp6.h> 9484386Sdes#include <netinet6/in6_var.h> 9584386Sdes#include <netinet6/nd6.h> 9675295Sdes 9775295Sdes#include <arpa/inet.h> 9875295Sdes 9975295Sdes#include <ctype.h> 10075295Sdes#include <netdb.h> 10175295Sdes#include <errno.h> 10275295Sdes#include <nlist.h> 10377998Sdes#include <stdio.h> 10477998Sdes#include <string.h> 10575295Sdes#include <paths.h> 10677998Sdes#include <err.h> 10775295Sdes#include <stdlib.h> 10888234Sdillon#include <fcntl.h> 10988234Sdillon#include <unistd.h> 11088234Sdillon#include "gmt2local.h" 11188234Sdillon 11288234Sdillon#define NEXTADDR(w, s) \ 11375295Sdes if (rtm->rtm_addrs & (w)) { \ 11484246Sdes bcopy((char *)&s, cp, sizeof(s)); cp += SA_SIZE(&s);} 11577998Sdes 11684246Sdes 11775295Sdesstatic pid_t pid; 11884246Sdesstatic int nflag; 11975295Sdesstatic int tflag; 12088234Sdillonstatic int32_t thiszone; /* time difference with gmt */ 12188234Sdillonstatic int s = -1; 12275295Sdesstatic int repeat = 0; 12375295Sdes 12477998Sdeschar ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 12577998Sdeschar host_buf[NI_MAXHOST]; /* getnameinfo() */ 12677998Sdeschar ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 12777998Sdes 12877998Sdesint main(int, char **); 12975295Sdesstatic int file(char *); 13075295Sdesvoid getsocket(void); 13175295Sdesint set(int, char **); 13277998Sdesvoid get(char *); 13384246Sdesint delete(char *); 13484246Sdesvoid dump(struct sockaddr_in6 *, int); 13575295Sdesstatic struct in6_nbrinfo *getnbrinfo(struct in6_addr *, int, int); 13677998Sdesstatic char *ether_str(struct sockaddr_dl *); 13775295Sdesint ndp_ether_aton(char *, u_char *); 13877998Sdesvoid usage(void); 13977998Sdesint rtmsg(int); 14077998Sdesvoid ifinfo(char *, int, char **); 14175295Sdesvoid rtrlist(void); 14275295Sdesvoid plist(void); 14375295Sdesvoid pfx_flush(void); 14475295Sdesvoid rtr_flush(void); 14575295Sdesvoid harmonize_rtr(void); 14675295Sdes#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 14784246Sdesstatic void getdefif(void); 14875295Sdesstatic void setdefif(char *); 14975295Sdes#endif 15075295Sdesstatic char *sec2str(time_t); 15177998Sdesstatic void ts_print(const struct timeval *); 15275295Sdes 15375295Sdesstatic char *rtpref_str[] = { 15475295Sdes "medium", /* 00 */ 15575295Sdes "high", /* 01 */ 15675295Sdes "rsv", /* 10 */ 15775295Sdes "low" /* 11 */ 15875295Sdes}; 15975295Sdes 16077998Sdesint mode = 0; 16177998Sdeschar *arg = NULL; 16275295Sdes 16375295Sdesint 16475295Sdesmain(int argc, char **argv) 16584246Sdes{ 16677998Sdes int ch; 16784246Sdes 16884246Sdes pid = getpid(); 16984246Sdes thiszone = gmt2local(0); 17084246Sdes while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 17184246Sdes switch (ch) { 17275295Sdes case 'a': 17375295Sdes case 'c': 17475295Sdes case 'p': 17575295Sdes case 'r': 17675295Sdes case 'H': 17775295Sdes case 'P': 17875295Sdes case 'R': 17975295Sdes case 's': 18075295Sdes case 'I': 18175295Sdes if (mode) { 18277998Sdes usage(); 18388234Sdillon /*NOTREACHED*/ 18488234Sdillon } 18575295Sdes mode = ch; 18675295Sdes arg = NULL; 18784246Sdes break; 18884246Sdes case 'f': 18984246Sdes exit(file(optarg) ? 1 : 0); 19084246Sdes case 'd': 19184246Sdes case 'i': 19284246Sdes if (mode) { 19377998Sdes usage(); 19484246Sdes /*NOTREACHED*/ 19577998Sdes } 19684246Sdes mode = ch; 19784246Sdes arg = optarg; 19877998Sdes break; 19975295Sdes case 'n': 20075295Sdes nflag = 1; 20175295Sdes break; 20284246Sdes case 't': 20384246Sdes tflag = 1; 20484246Sdes break; 20584246Sdes case 'A': 20684246Sdes if (mode) { 20784246Sdes usage(); 20884246Sdes /*NOTREACHED*/ 20984246Sdes } 21084246Sdes mode = 'a'; 21184246Sdes repeat = atoi(optarg); 21284246Sdes if (repeat < 0) { 21384246Sdes usage(); 21484246Sdes /*NOTREACHED*/ 21584246Sdes } 21684246Sdes break; 21784246Sdes default: 21884246Sdes usage(); 21984246Sdes } 22084246Sdes 22184246Sdes argc -= optind; 22284246Sdes argv += optind; 22384246Sdes 22488868Stanimura switch (mode) { 22588868Stanimura case 'a': 22684246Sdes case 'c': 22784246Sdes if (argc != 0) { 22884246Sdes usage(); 22984386Sdes /*NOTREACHED*/ 23084386Sdes } 23184386Sdes dump(0, mode == 'c'); 23284386Sdes break; 23384386Sdes case 'd': 23484386Sdes if (argc != 0) { 23584386Sdes usage(); 23684386Sdes /*NOTREACHED*/ 23784386Sdes } 23884386Sdes delete(arg); 23984386Sdes break; 24084386Sdes case 'I': 24184386Sdes#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 24284386Sdes if (argc > 1) { 24384386Sdes usage(); 24484386Sdes /*NOTREACHED*/ 24584386Sdes } else if (argc == 1) { 24684386Sdes if (strcmp(*argv, "delete") == 0 || 24784386Sdes if_nametoindex(*argv)) 24884386Sdes setdefif(*argv); 24984386Sdes else 25088868Stanimura errx(1, "invalid interface %s", *argv); 25188868Stanimura } 25284386Sdes getdefif(); /* always call it to print the result */ 25384386Sdes break; 25484386Sdes#else 25584386Sdes errx(1, "not supported yet"); 25684386Sdes /*NOTREACHED*/ 25784386Sdes#endif 25884386Sdes case 'p': 25984386Sdes if (argc != 0) { 26084386Sdes usage(); 26184386Sdes /*NOTREACHED*/ 26284386Sdes } 26384386Sdes plist(); 26484386Sdes break; 26584386Sdes case 'i': 266 ifinfo(arg, argc, argv); 267 break; 268 case 'r': 269 if (argc != 0) { 270 usage(); 271 /*NOTREACHED*/ 272 } 273 rtrlist(); 274 break; 275 case 's': 276 if (argc < 2 || argc > 4) 277 usage(); 278 exit(set(argc, argv) ? 1 : 0); 279 case 'H': 280 if (argc != 0) { 281 usage(); 282 /*NOTREACHED*/ 283 } 284 harmonize_rtr(); 285 break; 286 case 'P': 287 if (argc != 0) { 288 usage(); 289 /*NOTREACHED*/ 290 } 291 pfx_flush(); 292 break; 293 case 'R': 294 if (argc != 0) { 295 usage(); 296 /*NOTREACHED*/ 297 } 298 rtr_flush(); 299 break; 300 case 0: 301 if (argc != 1) { 302 usage(); 303 /*NOTREACHED*/ 304 } 305 get(argv[0]); 306 break; 307 } 308 exit(0); 309} 310 311/* 312 * Process a file to set standard ndp entries 313 */ 314static int 315file(char *name) 316{ 317 FILE *fp; 318 int i, retval; 319 char line[100], arg[5][50], *args[5], *p; 320 321 if ((fp = fopen(name, "r")) == NULL) 322 err(1, "cannot open %s", name); 323 args[0] = &arg[0][0]; 324 args[1] = &arg[1][0]; 325 args[2] = &arg[2][0]; 326 args[3] = &arg[3][0]; 327 args[4] = &arg[4][0]; 328 retval = 0; 329 while (fgets(line, sizeof(line), fp) != NULL) { 330 if ((p = strchr(line, '#')) != NULL) 331 *p = '\0'; 332 for (p = line; isblank(*p); p++); 333 if (*p == '\n' || *p == '\0') 334 continue; 335 i = sscanf(line, "%49s %49s %49s %49s %49s", 336 arg[0], arg[1], arg[2], arg[3], arg[4]); 337 if (i < 2) { 338 warnx("bad line: %s", line); 339 retval = 1; 340 continue; 341 } 342 if (set(i, args)) 343 retval = 1; 344 } 345 fclose(fp); 346 return (retval); 347} 348 349void 350getsocket() 351{ 352 if (s < 0) { 353 s = socket(PF_ROUTE, SOCK_RAW, 0); 354 if (s < 0) { 355 err(1, "socket"); 356 /* NOTREACHED */ 357 } 358 } 359} 360 361struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 362struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 363struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 364time_t expire_time; 365int flags, found_entry; 366struct { 367 struct rt_msghdr m_rtm; 368 char m_space[512]; 369} m_rtmsg; 370 371/* 372 * Set an individual neighbor cache entry 373 */ 374int 375set(int argc, char **argv) 376{ 377 register struct sockaddr_in6 *sin = &sin_m; 378 register struct sockaddr_dl *sdl; 379 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 380 struct addrinfo hints, *res; 381 int gai_error; 382 u_char *ea; 383 char *host = argv[0], *eaddr = argv[1]; 384 385 getsocket(); 386 argc -= 2; 387 argv += 2; 388 sdl_m = blank_sdl; 389 sin_m = blank_sin; 390 391 bzero(&hints, sizeof(hints)); 392 hints.ai_family = AF_INET6; 393 gai_error = getaddrinfo(host, NULL, &hints, &res); 394 if (gai_error) { 395 fprintf(stderr, "ndp: %s: %s\n", host, 396 gai_strerror(gai_error)); 397 return 1; 398 } 399 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 400 sin->sin6_scope_id = 401 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 402 ea = (u_char *)LLADDR(&sdl_m); 403 if (ndp_ether_aton(eaddr, ea) == 0) 404 sdl_m.sdl_alen = 6; 405 flags = expire_time = 0; 406 while (argc-- > 0) { 407 if (strncmp(argv[0], "temp", 4) == 0) { 408 struct timeval now; 409 410 gettimeofday(&now, 0); 411 expire_time = now.tv_sec + 20 * 60; 412 } else if (strncmp(argv[0], "proxy", 5) == 0) 413 flags |= RTF_ANNOUNCE; 414 argv++; 415 } 416 if (rtmsg(RTM_GET) < 0) { 417 errx(1, "RTM_GET(%s) failed", host); 418 /* NOTREACHED */ 419 } 420 sin = (struct sockaddr_in6 *)(rtm + 1); 421 sdl = (struct sockaddr_dl *)(ALIGN(sin->sin6_len) + (char *)sin); 422 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 423 if (sdl->sdl_family == AF_LINK && 424 !(rtm->rtm_flags & RTF_GATEWAY)) { 425 switch (sdl->sdl_type) { 426 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 427 case IFT_ISO88024: case IFT_ISO88025: 428 case IFT_L2VLAN: case IFT_BRIDGE: 429 goto overwrite; 430 } 431 } 432 fprintf(stderr, "set: cannot configure a new entry\n"); 433 return 1; 434 } 435 436overwrite: 437 if (sdl->sdl_family != AF_LINK) { 438 printf("cannot intuit interface index and type for %s\n", host); 439 return (1); 440 } 441 sdl_m.sdl_type = sdl->sdl_type; 442 sdl_m.sdl_index = sdl->sdl_index; 443 return (rtmsg(RTM_ADD)); 444} 445 446/* 447 * Display an individual neighbor cache entry 448 */ 449void 450get(char *host) 451{ 452 struct sockaddr_in6 *sin = &sin_m; 453 struct addrinfo hints, *res; 454 int gai_error; 455 456 sin_m = blank_sin; 457 bzero(&hints, sizeof(hints)); 458 hints.ai_family = AF_INET6; 459 gai_error = getaddrinfo(host, NULL, &hints, &res); 460 if (gai_error) { 461 fprintf(stderr, "ndp: %s: %s\n", host, 462 gai_strerror(gai_error)); 463 return; 464 } 465 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 466 sin->sin6_scope_id = 467 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 468 dump(sin, 0); 469 if (found_entry == 0) { 470 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 471 sizeof(host_buf), NULL ,0, 472 (nflag ? NI_NUMERICHOST : 0)); 473 printf("%s (%s) -- no entry\n", host, host_buf); 474 exit(1); 475 } 476} 477 478/* 479 * Delete a neighbor cache entry 480 */ 481int 482delete(char *host) 483{ 484 struct sockaddr_in6 *sin = &sin_m; 485 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 486 register char *cp = m_rtmsg.m_space; 487 struct sockaddr_dl *sdl; 488 struct addrinfo hints, *res; 489 int gai_error; 490 491 getsocket(); 492 sin_m = blank_sin; 493 494 bzero(&hints, sizeof(hints)); 495 hints.ai_family = AF_INET6; 496 gai_error = getaddrinfo(host, NULL, &hints, &res); 497 if (gai_error) { 498 fprintf(stderr, "ndp: %s: %s\n", host, 499 gai_strerror(gai_error)); 500 return 1; 501 } 502 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 503 sin->sin6_scope_id = 504 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 505 if (rtmsg(RTM_GET) < 0) { 506 errx(1, "RTM_GET(%s) failed", host); 507 /* NOTREACHED */ 508 } 509 sin = (struct sockaddr_in6 *)(rtm + 1); 510 sdl = (struct sockaddr_dl *)(ALIGN(sin->sin6_len) + (char *)sin); 511 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 512 if (sdl->sdl_family == AF_LINK && 513 !(rtm->rtm_flags & RTF_GATEWAY)) { 514 goto delete; 515 } 516 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 517 return 1; 518 } 519 520delete: 521 if (sdl->sdl_family != AF_LINK) { 522 printf("cannot locate %s\n", host); 523 return (1); 524 } 525 /* 526 * need to reinit the field because it has rt_key 527 * but we want the actual address 528 */ 529 NEXTADDR(RTA_DST, sin_m); 530 rtm->rtm_flags |= RTF_LLDATA; 531 if (rtmsg(RTM_DELETE) == 0) { 532 getnameinfo((struct sockaddr *)sin, 533 sin->sin6_len, host_buf, 534 sizeof(host_buf), NULL, 0, 535 (nflag ? NI_NUMERICHOST : 0)); 536 printf("%s (%s) deleted\n", host, host_buf); 537 } 538 539 return 0; 540} 541 542#define W_ADDR 36 543#define W_LL 17 544#define W_IF 6 545 546/* 547 * Dump the entire neighbor cache 548 */ 549void 550dump(struct sockaddr_in6 *addr, int cflag) 551{ 552 int mib[6]; 553 size_t needed; 554 char *lim, *buf, *next; 555 struct rt_msghdr *rtm; 556 struct sockaddr_in6 *sin; 557 struct sockaddr_dl *sdl; 558 extern int h_errno; 559 struct in6_nbrinfo *nbi; 560 struct timeval now; 561 int addrwidth; 562 int llwidth; 563 int ifwidth; 564 char flgbuf[8]; 565 char *ifname; 566 567 /* Print header */ 568 if (!tflag && !cflag) 569 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 570 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 571 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 572 573again:; 574 mib[0] = CTL_NET; 575 mib[1] = PF_ROUTE; 576 mib[2] = 0; 577 mib[3] = AF_INET6; 578 mib[4] = NET_RT_FLAGS; 579#ifdef RTF_LLINFO 580 mib[5] = RTF_LLINFO; 581#else 582 mib[5] = 0; 583#endif 584 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 585 err(1, "sysctl(PF_ROUTE estimate)"); 586 if (needed > 0) { 587 if ((buf = malloc(needed)) == NULL) 588 err(1, "malloc"); 589 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 590 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 591 lim = buf + needed; 592 } else 593 buf = lim = NULL; 594 595 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 596 int isrouter = 0, prbs = 0; 597 598 rtm = (struct rt_msghdr *)next; 599 sin = (struct sockaddr_in6 *)(rtm + 1); 600 sdl = (struct sockaddr_dl *)((char *)sin + ALIGN(sin->sin6_len)); 601 602 /* 603 * Some OSes can produce a route that has the LINK flag but 604 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 605 * and BSD/OS, where xx is not the interface identifier on 606 * lo0). Such routes entry would annoy getnbrinfo() below, 607 * so we skip them. 608 * XXX: such routes should have the GATEWAY flag, not the 609 * LINK flag. However, there is rotten routing software 610 * that advertises all routes that have the GATEWAY flag. 611 * Thus, KAME kernel intentionally does not set the LINK flag. 612 * What is to be fixed is not ndp, but such routing software 613 * (and the kernel workaround)... 614 */ 615 if (sdl->sdl_family != AF_LINK) 616 continue; 617 618 if (!(rtm->rtm_flags & RTF_HOST)) 619 continue; 620 621 if (addr) { 622 if (IN6_ARE_ADDR_EQUAL(&addr->sin6_addr, 623 &sin->sin6_addr) == 0 || 624 addr->sin6_scope_id != sin->sin6_scope_id) 625 continue; 626 found_entry = 1; 627 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 628 continue; 629 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 630 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 631 /* XXX: should scope id be filled in the kernel? */ 632 if (sin->sin6_scope_id == 0) 633 sin->sin6_scope_id = sdl->sdl_index; 634 } 635 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 636 sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0)); 637 if (cflag) { 638#ifdef RTF_WASCLONED 639 if (rtm->rtm_flags & RTF_WASCLONED) 640 delete(host_buf); 641#elif defined(RTF_CLONED) 642 if (rtm->rtm_flags & RTF_CLONED) 643 delete(host_buf); 644#else 645 delete(host_buf); 646#endif 647 continue; 648 } 649 gettimeofday(&now, 0); 650 if (tflag) 651 ts_print(&now); 652 653 addrwidth = strlen(host_buf); 654 if (addrwidth < W_ADDR) 655 addrwidth = W_ADDR; 656 llwidth = strlen(ether_str(sdl)); 657 if (W_ADDR + W_LL - addrwidth > llwidth) 658 llwidth = W_ADDR + W_LL - addrwidth; 659 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 660 if (!ifname) 661 ifname = "?"; 662 ifwidth = strlen(ifname); 663 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 664 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 665 666 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 667 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 668 669 /* Print neighbor discovery specific informations */ 670 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 671 if (nbi) { 672 if (nbi->expire > now.tv_sec) { 673 printf(" %-9.9s", 674 sec2str(nbi->expire - now.tv_sec)); 675 } else if (nbi->expire == 0) 676 printf(" %-9.9s", "permanent"); 677 else 678 printf(" %-9.9s", "expired"); 679 680 switch (nbi->state) { 681 case ND6_LLINFO_NOSTATE: 682 printf(" N"); 683 break; 684#ifdef ND6_LLINFO_WAITDELETE 685 case ND6_LLINFO_WAITDELETE: 686 printf(" W"); 687 break; 688#endif 689 case ND6_LLINFO_INCOMPLETE: 690 printf(" I"); 691 break; 692 case ND6_LLINFO_REACHABLE: 693 printf(" R"); 694 break; 695 case ND6_LLINFO_STALE: 696 printf(" S"); 697 break; 698 case ND6_LLINFO_DELAY: 699 printf(" D"); 700 break; 701 case ND6_LLINFO_PROBE: 702 printf(" P"); 703 break; 704 default: 705 printf(" ?"); 706 break; 707 } 708 709 isrouter = nbi->isrouter; 710 prbs = nbi->asked; 711 } else { 712 warnx("failed to get neighbor information"); 713 printf(" "); 714 } 715 716 /* 717 * other flags. R: router, P: proxy, W: ?? 718 */ 719 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 720 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 721 isrouter ? "R" : "", 722 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 723 } else { 724 sin = (struct sockaddr_in6 *) 725 (sdl->sdl_len + (char *)sdl); 726#if 0 /* W and P are mystery even for us */ 727 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 728 isrouter ? "R" : "", 729 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 730 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 731 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 732#else 733 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 734 isrouter ? "R" : "", 735 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 736#endif 737 } 738 printf(" %s", flgbuf); 739 740 if (prbs) 741 printf(" %d", prbs); 742 743 printf("\n"); 744 } 745 if (buf != NULL) 746 free(buf); 747 748 if (repeat) { 749 printf("\n"); 750 fflush(stdout); 751 sleep(repeat); 752 goto again; 753 } 754} 755 756static struct in6_nbrinfo * 757getnbrinfo(struct in6_addr *addr, int ifindex, int warning) 758{ 759 static struct in6_nbrinfo nbi; 760 int s; 761 762 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 763 err(1, "socket"); 764 765 bzero(&nbi, sizeof(nbi)); 766 if_indextoname(ifindex, nbi.ifname); 767 nbi.addr = *addr; 768 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 769 if (warning) 770 warn("ioctl(SIOCGNBRINFO_IN6)"); 771 close(s); 772 return(NULL); 773 } 774 775 close(s); 776 return(&nbi); 777} 778 779static char * 780ether_str(struct sockaddr_dl *sdl) 781{ 782 static char hbuf[NI_MAXHOST]; 783 char *cp; 784 785 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 786 strlcpy(hbuf, ether_ntoa((struct ether_addr *)LLADDR(sdl)), 787 sizeof(hbuf)); 788 } else if (sdl->sdl_alen) { 789 int n = sdl->sdl_nlen > 0 ? sdl->sdl_nlen + 1 : 0; 790 snprintf(hbuf, sizeof(hbuf), "%s", link_ntoa(sdl) + n); 791 } else 792 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 793 794 return(hbuf); 795} 796 797int 798ndp_ether_aton(char *a, u_char *n) 799{ 800 int i, o[6]; 801 802 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 803 &o[3], &o[4], &o[5]); 804 if (i != 6) { 805 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 806 return (1); 807 } 808 for (i = 0; i < 6; i++) 809 n[i] = o[i]; 810 return (0); 811} 812 813void 814usage() 815{ 816 printf("usage: ndp [-nt] hostname\n"); 817 printf(" ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n"); 818 printf(" ndp [-nt] -A wait\n"); 819 printf(" ndp [-nt] -d hostname\n"); 820 printf(" ndp [-nt] -f filename\n"); 821 printf(" ndp [-nt] -i interface [flags...]\n"); 822#ifdef SIOCSDEFIFACE_IN6 823 printf(" ndp [-nt] -I [interface|delete]\n"); 824#endif 825 printf(" ndp [-nt] -s nodename etheraddr [temp] [proxy]\n"); 826 exit(1); 827} 828 829int 830rtmsg(int cmd) 831{ 832 static int seq; 833 int rlen; 834 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 835 register char *cp = m_rtmsg.m_space; 836 register int l; 837 838 errno = 0; 839 if (cmd == RTM_DELETE) 840 goto doit; 841 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 842 rtm->rtm_flags = flags; 843 rtm->rtm_version = RTM_VERSION; 844 845 switch (cmd) { 846 default: 847 fprintf(stderr, "ndp: internal wrong cmd\n"); 848 exit(1); 849 case RTM_ADD: 850 rtm->rtm_addrs |= RTA_GATEWAY; 851 if (expire_time) { 852 rtm->rtm_rmx.rmx_expire = expire_time; 853 rtm->rtm_inits = RTV_EXPIRE; 854 } 855 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA); 856#if 0 /* we don't support ipv6addr/128 type proxying */ 857 if (rtm->rtm_flags & RTF_ANNOUNCE) { 858 rtm->rtm_flags &= ~RTF_HOST; 859 rtm->rtm_addrs |= RTA_NETMASK; 860 } 861#endif 862 /* FALLTHROUGH */ 863 case RTM_GET: 864 rtm->rtm_addrs |= RTA_DST; 865 } 866 867 NEXTADDR(RTA_DST, sin_m); 868 NEXTADDR(RTA_GATEWAY, sdl_m); 869#if 0 /* we don't support ipv6addr/128 type proxying */ 870 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 871 NEXTADDR(RTA_NETMASK, so_mask); 872#endif 873 874 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 875doit: 876 l = rtm->rtm_msglen; 877 rtm->rtm_seq = ++seq; 878 rtm->rtm_type = cmd; 879 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 880 if (errno != ESRCH || cmd != RTM_DELETE) { 881 err(1, "writing to routing socket"); 882 /* NOTREACHED */ 883 } 884 } 885 do { 886 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 887 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 888 if (l < 0) 889 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 890 strerror(errno)); 891 return (0); 892} 893 894void 895ifinfo(char *ifname, int argc, char **argv) 896{ 897 struct in6_ndireq nd; 898 int i, s; 899 u_int32_t newflags; 900#ifdef IPV6CTL_USETEMPADDR 901 u_int8_t nullbuf[8]; 902#endif 903 904 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 905 err(1, "socket"); 906 /* NOTREACHED */ 907 } 908 bzero(&nd, sizeof(nd)); 909 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 910 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 911 err(1, "ioctl(SIOCGIFINFO_IN6)"); 912 /* NOTREACHED */ 913 } 914#define ND nd.ndi 915 newflags = ND.flags; 916 for (i = 0; i < argc; i++) { 917 int clear = 0; 918 char *cp = argv[i]; 919 920 if (*cp == '-') { 921 clear = 1; 922 cp++; 923 } 924 925#define SETFLAG(s, f) \ 926 do {\ 927 if (strcmp(cp, (s)) == 0) {\ 928 if (clear)\ 929 newflags &= ~(f);\ 930 else\ 931 newflags |= (f);\ 932 }\ 933 } while (0) 934/* 935 * XXX: this macro is not 100% correct, in that it matches "nud" against 936 * "nudbogus". But we just let it go since this is minor. 937 */ 938#define SETVALUE(f, v) \ 939 do { \ 940 char *valptr; \ 941 unsigned long newval; \ 942 v = 0; /* unspecified */ \ 943 if (strncmp(cp, f, strlen(f)) == 0) { \ 944 valptr = strchr(cp, '='); \ 945 if (valptr == NULL) \ 946 err(1, "syntax error in %s field", (f)); \ 947 errno = 0; \ 948 newval = strtoul(++valptr, NULL, 0); \ 949 if (errno) \ 950 err(1, "syntax error in %s's value", (f)); \ 951 v = newval; \ 952 } \ 953 } while (0) 954 955 SETFLAG("disabled", ND6_IFF_IFDISABLED); 956 SETFLAG("nud", ND6_IFF_PERFORMNUD); 957#ifdef ND6_IFF_ACCEPT_RTADV 958 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 959#endif 960#ifdef ND6_IFF_AUTO_LINKLOCAL 961 SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL); 962#endif 963#ifdef ND6_IFF_NO_PREFER_IFACE 964 SETFLAG("no_prefer_iface", ND6_IFF_NO_PREFER_IFACE); 965#endif 966 SETVALUE("basereachable", ND.basereachable); 967 SETVALUE("retrans", ND.retrans); 968 SETVALUE("curhlim", ND.chlim); 969 970 ND.flags = newflags; 971 if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) { 972 err(1, "ioctl(SIOCSIFINFO_IN6)"); 973 /* NOTREACHED */ 974 } 975#undef SETFLAG 976#undef SETVALUE 977 } 978 979 if (!ND.initialized) { 980 errx(1, "%s: not initialized yet", ifname); 981 /* NOTREACHED */ 982 } 983 984 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 985 err(1, "ioctl(SIOCGIFINFO_IN6)"); 986 /* NOTREACHED */ 987 } 988 printf("linkmtu=%d", ND.linkmtu); 989 printf(", maxmtu=%d", ND.maxmtu); 990 printf(", curhlim=%d", ND.chlim); 991 printf(", basereachable=%ds%dms", 992 ND.basereachable / 1000, ND.basereachable % 1000); 993 printf(", reachable=%ds", ND.reachable); 994 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 995#ifdef IPV6CTL_USETEMPADDR 996 memset(nullbuf, 0, sizeof(nullbuf)); 997 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 998 int j; 999 u_int8_t *rbuf; 1000 1001 for (i = 0; i < 3; i++) { 1002 switch (i) { 1003 case 0: 1004 printf("\nRandom seed(0): "); 1005 rbuf = ND.randomseed0; 1006 break; 1007 case 1: 1008 printf("\nRandom seed(1): "); 1009 rbuf = ND.randomseed1; 1010 break; 1011 case 2: 1012 printf("\nRandom ID: "); 1013 rbuf = ND.randomid; 1014 break; 1015 default: 1016 errx(1, "impossible case for tempaddr display"); 1017 } 1018 for (j = 0; j < 8; j++) 1019 printf("%02x", rbuf[j]); 1020 } 1021 } 1022#endif 1023 if (ND.flags) { 1024 printf("\nFlags: "); 1025#ifdef ND6_IFF_IFDISABLED 1026 if ((ND.flags & ND6_IFF_IFDISABLED)) 1027 printf("disabled "); 1028#endif 1029 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1030 printf("nud "); 1031#ifdef ND6_IFF_ACCEPT_RTADV 1032 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1033 printf("accept_rtadv "); 1034#endif 1035#ifdef ND6_IFF_AUTO_LINKLOCAL 1036 if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL)) 1037 printf("auto_linklocal "); 1038#endif 1039#ifdef ND6_IFF_NO_PREFER_IFACE 1040 if ((ND.flags & ND6_IFF_NO_PREFER_IFACE)) 1041 printf("no_prefer_iface "); 1042#endif 1043 } 1044 putc('\n', stdout); 1045#undef ND 1046 1047 close(s); 1048} 1049 1050#ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1051#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1052#endif 1053 1054void 1055rtrlist() 1056{ 1057 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1058 char *buf; 1059 struct in6_defrouter *p, *ep; 1060 size_t l; 1061 struct timeval now; 1062 1063 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1064 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1065 /*NOTREACHED*/ 1066 } 1067 if (l == 0) 1068 return; 1069 buf = malloc(l); 1070 if (!buf) { 1071 err(1, "malloc"); 1072 /*NOTREACHED*/ 1073 } 1074 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1075 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1076 /*NOTREACHED*/ 1077 } 1078 1079 ep = (struct in6_defrouter *)(buf + l); 1080 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1081 int rtpref; 1082 1083 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1084 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1085 (nflag ? NI_NUMERICHOST : 0)) != 0) 1086 strlcpy(host_buf, "?", sizeof(host_buf)); 1087 1088 printf("%s if=%s", host_buf, 1089 if_indextoname(p->if_index, ifix_buf)); 1090 printf(", flags=%s%s", 1091 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1092 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1093 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1094 printf(", pref=%s", rtpref_str[rtpref]); 1095 1096 gettimeofday(&now, 0); 1097 if (p->expire == 0) 1098 printf(", expire=Never\n"); 1099 else 1100 printf(", expire=%s\n", 1101 sec2str(p->expire - now.tv_sec)); 1102 } 1103 free(buf); 1104} 1105 1106void 1107plist() 1108{ 1109 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1110 char *buf; 1111 struct in6_prefix *p, *ep, *n; 1112 struct sockaddr_in6 *advrtr; 1113 size_t l; 1114 struct timeval now; 1115 const int niflags = NI_NUMERICHOST; 1116 int ninflags = nflag ? NI_NUMERICHOST : 0; 1117 char namebuf[NI_MAXHOST]; 1118 1119 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1120 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1121 /*NOTREACHED*/ 1122 } 1123 buf = malloc(l); 1124 if (!buf) { 1125 err(1, "malloc"); 1126 /*NOTREACHED*/ 1127 } 1128 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1129 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1130 /*NOTREACHED*/ 1131 } 1132 1133 ep = (struct in6_prefix *)(buf + l); 1134 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1135 advrtr = (struct sockaddr_in6 *)(p + 1); 1136 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1137 1138 if (getnameinfo((struct sockaddr *)&p->prefix, 1139 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1140 NULL, 0, niflags) != 0) 1141 strlcpy(namebuf, "?", sizeof(namebuf)); 1142 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1143 if_indextoname(p->if_index, ifix_buf)); 1144 1145 gettimeofday(&now, 0); 1146 /* 1147 * meaning of fields, especially flags, is very different 1148 * by origin. notify the difference to the users. 1149 */ 1150 printf("flags=%s%s%s%s%s", 1151 p->raflags.onlink ? "L" : "", 1152 p->raflags.autonomous ? "A" : "", 1153 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1154 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1155#ifdef NDPRF_HOME 1156 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1157#else 1158 "" 1159#endif 1160 ); 1161 if (p->vltime == ND6_INFINITE_LIFETIME) 1162 printf(" vltime=infinity"); 1163 else 1164 printf(" vltime=%lu", (unsigned long)p->vltime); 1165 if (p->pltime == ND6_INFINITE_LIFETIME) 1166 printf(", pltime=infinity"); 1167 else 1168 printf(", pltime=%lu", (unsigned long)p->pltime); 1169 if (p->expire == 0) 1170 printf(", expire=Never"); 1171 else if (p->expire >= now.tv_sec) 1172 printf(", expire=%s", 1173 sec2str(p->expire - now.tv_sec)); 1174 else 1175 printf(", expired"); 1176 printf(", ref=%d", p->refcnt); 1177 printf("\n"); 1178 /* 1179 * "advertising router" list is meaningful only if the prefix 1180 * information is from RA. 1181 */ 1182 if (p->advrtrs) { 1183 int j; 1184 struct sockaddr_in6 *sin6; 1185 1186 sin6 = advrtr; 1187 printf(" advertised by\n"); 1188 for (j = 0; j < p->advrtrs; j++) { 1189 struct in6_nbrinfo *nbi; 1190 1191 if (getnameinfo((struct sockaddr *)sin6, 1192 sin6->sin6_len, namebuf, sizeof(namebuf), 1193 NULL, 0, ninflags) != 0) 1194 strlcpy(namebuf, "?", sizeof(namebuf)); 1195 printf(" %s", namebuf); 1196 1197 nbi = getnbrinfo(&sin6->sin6_addr, 1198 p->if_index, 0); 1199 if (nbi) { 1200 switch (nbi->state) { 1201 case ND6_LLINFO_REACHABLE: 1202 case ND6_LLINFO_STALE: 1203 case ND6_LLINFO_DELAY: 1204 case ND6_LLINFO_PROBE: 1205 printf(" (reachable)\n"); 1206 break; 1207 default: 1208 printf(" (unreachable)\n"); 1209 } 1210 } else 1211 printf(" (no neighbor state)\n"); 1212 sin6++; 1213 } 1214 } else 1215 printf(" No advertising router\n"); 1216 } 1217 free(buf); 1218} 1219 1220void 1221pfx_flush() 1222{ 1223 char dummyif[IFNAMSIZ+8]; 1224 int s; 1225 1226 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1227 err(1, "socket"); 1228 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1229 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1230 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1231} 1232 1233void 1234rtr_flush() 1235{ 1236 char dummyif[IFNAMSIZ+8]; 1237 int s; 1238 1239 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1240 err(1, "socket"); 1241 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1242 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1243 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1244 1245 close(s); 1246} 1247 1248void 1249harmonize_rtr() 1250{ 1251 char dummyif[IFNAMSIZ+8]; 1252 int s; 1253 1254 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1255 err(1, "socket"); 1256 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1257 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1258 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1259 1260 close(s); 1261} 1262 1263#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1264static void 1265setdefif(char *ifname) 1266{ 1267 struct in6_ndifreq ndifreq; 1268 unsigned int ifindex; 1269 1270 if (strcasecmp(ifname, "delete") == 0) 1271 ifindex = 0; 1272 else { 1273 if ((ifindex = if_nametoindex(ifname)) == 0) 1274 err(1, "failed to resolve i/f index for %s", ifname); 1275 } 1276 1277 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1278 err(1, "socket"); 1279 1280 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1281 ndifreq.ifindex = ifindex; 1282 1283 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1284 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1285 1286 close(s); 1287} 1288 1289static void 1290getdefif() 1291{ 1292 struct in6_ndifreq ndifreq; 1293 char ifname[IFNAMSIZ+8]; 1294 1295 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1296 err(1, "socket"); 1297 1298 memset(&ndifreq, 0, sizeof(ndifreq)); 1299 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1300 1301 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1302 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1303 1304 if (ndifreq.ifindex == 0) 1305 printf("No default interface.\n"); 1306 else { 1307 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1308 err(1, "failed to resolve ifname for index %lu", 1309 ndifreq.ifindex); 1310 printf("ND default interface = %s\n", ifname); 1311 } 1312 1313 close(s); 1314} 1315#endif 1316 1317static char * 1318sec2str(time_t total) 1319{ 1320 static char result[256]; 1321 int days, hours, mins, secs; 1322 int first = 1; 1323 char *p = result; 1324 char *ep = &result[sizeof(result)]; 1325 int n; 1326 1327 days = total / 3600 / 24; 1328 hours = (total / 3600) % 24; 1329 mins = (total / 60) % 60; 1330 secs = total % 60; 1331 1332 if (days) { 1333 first = 0; 1334 n = snprintf(p, ep - p, "%dd", days); 1335 if (n < 0 || n >= ep - p) 1336 return "?"; 1337 p += n; 1338 } 1339 if (!first || hours) { 1340 first = 0; 1341 n = snprintf(p, ep - p, "%dh", hours); 1342 if (n < 0 || n >= ep - p) 1343 return "?"; 1344 p += n; 1345 } 1346 if (!first || mins) { 1347 first = 0; 1348 n = snprintf(p, ep - p, "%dm", mins); 1349 if (n < 0 || n >= ep - p) 1350 return "?"; 1351 p += n; 1352 } 1353 snprintf(p, ep - p, "%ds", secs); 1354 1355 return(result); 1356} 1357 1358/* 1359 * Print the timestamp 1360 * from tcpdump/util.c 1361 */ 1362static void 1363ts_print(const struct timeval *tvp) 1364{ 1365 int s; 1366 1367 /* Default */ 1368 s = (tvp->tv_sec + thiszone) % 86400; 1369 (void)printf("%02d:%02d:%02d.%06u ", 1370 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1371} 1372 1373#undef NEXTADDR 1374