ndp.c revision 125675
1/* $FreeBSD: head/usr.sbin/ndp/ndp.c 125675 2004-02-10 22:50:57Z sumikawa $ */ 2/* $KAME: ndp.c,v 1.104 2003/06/27 07:48:39 itojun 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. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the University of 50 * California, Berkeley and its contributors. 51 * 4. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 */ 67 68/* 69 * Based on: 70 * "@(#) Copyright (c) 1984, 1993\n\ 71 * The Regents of the University of California. All rights reserved.\n"; 72 * 73 * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; 74 */ 75 76/* 77 * ndp - display, set, delete and flush neighbor cache 78 */ 79 80 81#include <sys/param.h> 82#include <sys/file.h> 83#include <sys/ioctl.h> 84#include <sys/socket.h> 85#include <sys/sysctl.h> 86#include <sys/time.h> 87#include <sys/queue.h> 88 89#include <net/if.h> 90#include <net/if_var.h> 91#include <net/if_dl.h> 92#include <net/if_types.h> 93#include <net/route.h> 94 95#include <netinet/in.h> 96#include <netinet/if_ether.h> 97 98#include <netinet/icmp6.h> 99#include <netinet6/in6_var.h> 100#include <netinet6/nd6.h> 101 102#include <arpa/inet.h> 103 104#include <netdb.h> 105#include <errno.h> 106#include <nlist.h> 107#include <stdio.h> 108#include <string.h> 109#include <paths.h> 110#include <err.h> 111#include <stdlib.h> 112#include <fcntl.h> 113#include <unistd.h> 114#include <err.h> 115#include "gmt2local.h" 116 117/* packing rule for routing socket */ 118#define ROUNDUP(a) \ 119 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 120#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 121 122static pid_t pid; 123static int nflag; 124static int tflag; 125static int32_t thiszone; /* time difference with gmt */ 126static int s = -1; 127static int repeat = 0; 128 129char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 130char host_buf[NI_MAXHOST]; /* getnameinfo() */ 131char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 132 133int main __P((int, char **)); 134int file __P((char *)); 135void getsocket __P((void)); 136int set __P((int, char **)); 137void get __P((char *)); 138int delete __P((char *)); 139void dump __P((struct in6_addr *, int)); 140static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *, int, int)); 141static char *ether_str __P((struct sockaddr_dl *)); 142int ndp_ether_aton __P((char *, u_char *)); 143void usage __P((void)); 144int rtmsg __P((int)); 145void ifinfo __P((char *, int, char **)); 146void rtrlist __P((void)); 147void plist __P((void)); 148void pfx_flush __P((void)); 149void rtrlist __P((void)); 150void rtr_flush __P((void)); 151void harmonize_rtr __P((void)); 152#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 153static void getdefif __P((void)); 154static void setdefif __P((char *)); 155#endif 156static char *sec2str __P((time_t)); 157static char *ether_str __P((struct sockaddr_dl *)); 158static void ts_print __P((const struct timeval *)); 159 160#ifdef ICMPV6CTL_ND6_DRLIST 161static char *rtpref_str[] = { 162 "medium", /* 00 */ 163 "high", /* 01 */ 164 "rsv", /* 10 */ 165 "low" /* 11 */ 166}; 167#endif 168 169int mode = 0; 170char *arg = NULL; 171 172int 173main(argc, argv) 174 int argc; 175 char **argv; 176{ 177 int ch; 178 179 pid = getpid(); 180 thiszone = gmt2local(0); 181 while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 182 switch (ch) { 183 case 'a': 184 case 'c': 185 case 'p': 186 case 'r': 187 case 'H': 188 case 'P': 189 case 'R': 190 case 's': 191 case 'I': 192 if (mode) { 193 usage(); 194 /*NOTREACHED*/ 195 } 196 mode = ch; 197 arg = NULL; 198 break; 199 case 'd': 200 case 'f': 201 case 'i' : 202 if (mode) { 203 usage(); 204 /*NOTREACHED*/ 205 } 206 mode = ch; 207 arg = optarg; 208 break; 209 case 'n': 210 nflag = 1; 211 break; 212 case 't': 213 tflag = 1; 214 break; 215 case 'A': 216 if (mode) { 217 usage(); 218 /*NOTREACHED*/ 219 } 220 mode = 'a'; 221 repeat = atoi(optarg); 222 if (repeat < 0) { 223 usage(); 224 /*NOTREACHED*/ 225 } 226 break; 227 default: 228 usage(); 229 } 230 231 argc -= optind; 232 argv += optind; 233 234 switch (mode) { 235 case 'a': 236 case 'c': 237 if (argc != 0) { 238 usage(); 239 /*NOTREACHED*/ 240 } 241 dump(0, mode == 'c'); 242 break; 243 case 'd': 244 if (argc != 0) { 245 usage(); 246 /*NOTREACHED*/ 247 } 248 delete(arg); 249 break; 250 case 'I': 251#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 252 if (argc > 1) { 253 usage(); 254 /*NOTREACHED*/ 255 } else if (argc == 1) { 256 if (strcmp(*argv, "delete") == 0 || 257 if_nametoindex(*argv)) 258 setdefif(*argv); 259 else 260 errx(1, "invalid interface %s", *argv); 261 } 262 getdefif(); /* always call it to print the result */ 263 break; 264#else 265 errx(1, "not supported yet"); 266 /*NOTREACHED*/ 267#endif 268 case 'p': 269 if (argc != 0) { 270 usage(); 271 /*NOTREACHED*/ 272 } 273 plist(); 274 break; 275 case 'i': 276 ifinfo(arg, argc, argv); 277 break; 278 case 'r': 279 if (argc != 0) { 280 usage(); 281 /*NOTREACHED*/ 282 } 283 rtrlist(); 284 break; 285 case 's': 286 if (argc < 2 || argc > 4) 287 usage(); 288 exit(set(argc, argv) ? 1 : 0); 289 case 'H': 290 if (argc != 0) { 291 usage(); 292 /*NOTREACHED*/ 293 } 294 harmonize_rtr(); 295 break; 296 case 'P': 297 if (argc != 0) { 298 usage(); 299 /*NOTREACHED*/ 300 } 301 pfx_flush(); 302 break; 303 case 'R': 304 if (argc != 0) { 305 usage(); 306 /*NOTREACHED*/ 307 } 308 rtr_flush(); 309 break; 310 case 0: 311 if (argc != 1) { 312 usage(); 313 /*NOTREACHED*/ 314 } 315 get(argv[0]); 316 break; 317 } 318 exit(0); 319} 320 321/* 322 * Process a file to set standard ndp entries 323 */ 324int 325file(name) 326 char *name; 327{ 328 FILE *fp; 329 int i, retval; 330 char line[100], arg[5][50], *args[5]; 331 332 if ((fp = fopen(name, "r")) == NULL) { 333 fprintf(stderr, "ndp: cannot open %s\n", name); 334 exit(1); 335 } 336 args[0] = &arg[0][0]; 337 args[1] = &arg[1][0]; 338 args[2] = &arg[2][0]; 339 args[3] = &arg[3][0]; 340 args[4] = &arg[4][0]; 341 retval = 0; 342 while (fgets(line, 100, fp) != NULL) { 343 i = sscanf(line, "%49s %49s %49s %49s %49s", 344 arg[0], arg[1], arg[2], arg[3], arg[4]); 345 if (i < 2) { 346 fprintf(stderr, "ndp: bad line: %s\n", line); 347 retval = 1; 348 continue; 349 } 350 if (set(i, args)) 351 retval = 1; 352 } 353 fclose(fp); 354 return (retval); 355} 356 357void 358getsocket() 359{ 360 if (s < 0) { 361 s = socket(PF_ROUTE, SOCK_RAW, 0); 362 if (s < 0) { 363 err(1, "socket"); 364 /* NOTREACHED */ 365 } 366 } 367} 368 369struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 370struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 371struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 372int expire_time, flags, found_entry; 373struct { 374 struct rt_msghdr m_rtm; 375 char m_space[512]; 376} m_rtmsg; 377 378/* 379 * Set an individual neighbor cache entry 380 */ 381int 382set(argc, argv) 383 int argc; 384 char **argv; 385{ 386 register struct sockaddr_in6 *sin = &sin_m; 387 register struct sockaddr_dl *sdl; 388 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 389 struct addrinfo hints, *res; 390 int gai_error; 391 u_char *ea; 392 char *host = argv[0], *eaddr = argv[1]; 393 394 getsocket(); 395 argc -= 2; 396 argv += 2; 397 sdl_m = blank_sdl; 398 sin_m = blank_sin; 399 400 bzero(&hints, sizeof(hints)); 401 hints.ai_family = AF_INET6; 402 gai_error = getaddrinfo(host, NULL, &hints, &res); 403 if (gai_error) { 404 fprintf(stderr, "ndp: %s: %s\n", host, 405 gai_strerror(gai_error)); 406 return 1; 407 } 408 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 409#ifdef __KAME__ 410 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 411 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 412 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 413 } 414#endif 415 ea = (u_char *)LLADDR(&sdl_m); 416 if (ndp_ether_aton(eaddr, ea) == 0) 417 sdl_m.sdl_alen = 6; 418 flags = expire_time = 0; 419 while (argc-- > 0) { 420 if (strncmp(argv[0], "temp", 4) == 0) { 421 struct timeval time; 422 423 gettimeofday(&time, 0); 424 expire_time = time.tv_sec + 20 * 60; 425 } else if (strncmp(argv[0], "proxy", 5) == 0) 426 flags |= RTF_ANNOUNCE; 427 argv++; 428 } 429 if (rtmsg(RTM_GET) < 0) { 430 errx(1, "RTM_GET(%s) failed", host); 431 /* NOTREACHED */ 432 } 433 sin = (struct sockaddr_in6 *)(rtm + 1); 434 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 435 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 436 if (sdl->sdl_family == AF_LINK && 437 (rtm->rtm_flags & RTF_LLINFO) && 438 !(rtm->rtm_flags & RTF_GATEWAY)) { 439 switch (sdl->sdl_type) { 440 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 441 case IFT_ISO88024: case IFT_ISO88025: 442 goto overwrite; 443 } 444 } 445 /* 446 * IPv4 arp command retries with sin_other = SIN_PROXY here. 447 */ 448 fprintf(stderr, "set: cannot configure a new entry\n"); 449 return 1; 450 } 451 452overwrite: 453 if (sdl->sdl_family != AF_LINK) { 454 printf("cannot intuit interface index and type for %s\n", host); 455 return (1); 456 } 457 sdl_m.sdl_type = sdl->sdl_type; 458 sdl_m.sdl_index = sdl->sdl_index; 459 return (rtmsg(RTM_ADD)); 460} 461 462/* 463 * Display an individual neighbor cache entry 464 */ 465void 466get(host) 467 char *host; 468{ 469 struct sockaddr_in6 *sin = &sin_m; 470 struct addrinfo hints, *res; 471 int gai_error; 472 473 sin_m = blank_sin; 474 bzero(&hints, sizeof(hints)); 475 hints.ai_family = AF_INET6; 476 gai_error = getaddrinfo(host, NULL, &hints, &res); 477 if (gai_error) { 478 fprintf(stderr, "ndp: %s: %s\n", host, 479 gai_strerror(gai_error)); 480 return; 481 } 482 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 483#ifdef __KAME__ 484 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 485 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 486 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 487 } 488#endif 489 dump(&sin->sin6_addr, 0); 490 if (found_entry == 0) { 491 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 492 sizeof(host_buf), NULL ,0, 493 (nflag ? NI_NUMERICHOST : 0)); 494 printf("%s (%s) -- no entry\n", host, host_buf); 495 exit(1); 496 } 497} 498 499/* 500 * Delete a neighbor cache entry 501 */ 502int 503delete(host) 504 char *host; 505{ 506 struct sockaddr_in6 *sin = &sin_m; 507 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 508 struct sockaddr_dl *sdl; 509 struct addrinfo hints, *res; 510 int gai_error; 511 512 getsocket(); 513 sin_m = blank_sin; 514 515 bzero(&hints, sizeof(hints)); 516 hints.ai_family = AF_INET6; 517 gai_error = getaddrinfo(host, NULL, &hints, &res); 518 if (gai_error) { 519 fprintf(stderr, "ndp: %s: %s\n", host, 520 gai_strerror(gai_error)); 521 return 1; 522 } 523 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 524#ifdef __KAME__ 525 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 526 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 527 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 528 } 529#endif 530 if (rtmsg(RTM_GET) < 0) { 531 errx(1, "RTM_GET(%s) failed", host); 532 /* NOTREACHED */ 533 } 534 sin = (struct sockaddr_in6 *)(rtm + 1); 535 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 536 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 537 if (sdl->sdl_family == AF_LINK && 538 (rtm->rtm_flags & RTF_LLINFO) && 539 !(rtm->rtm_flags & RTF_GATEWAY)) { 540 goto delete; 541 } 542 /* 543 * IPv4 arp command retries with sin_other = SIN_PROXY here. 544 */ 545 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 546 return 1; 547 } 548 549delete: 550 if (sdl->sdl_family != AF_LINK) { 551 printf("cannot locate %s\n", host); 552 return (1); 553 } 554 if (rtmsg(RTM_DELETE) == 0) { 555 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 556 557#ifdef __KAME__ 558 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 559 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 560 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 561 } 562#endif 563 getnameinfo((struct sockaddr *)&s6, 564 s6.sin6_len, host_buf, 565 sizeof(host_buf), NULL, 0, 566 (nflag ? NI_NUMERICHOST : 0)); 567 printf("%s (%s) deleted\n", host, host_buf); 568 } 569 570 return 0; 571} 572 573#define W_ADDR 36 574#define W_LL 17 575#define W_IF 6 576 577/* 578 * Dump the entire neighbor cache 579 */ 580void 581dump(addr, cflag) 582 struct in6_addr *addr; 583 int cflag; 584{ 585 int mib[6]; 586 size_t needed; 587 char *lim, *buf, *next; 588 struct rt_msghdr *rtm; 589 struct sockaddr_in6 *sin; 590 struct sockaddr_dl *sdl; 591 extern int h_errno; 592 struct in6_nbrinfo *nbi; 593 struct timeval time; 594 int addrwidth; 595 int llwidth; 596 int ifwidth; 597 char flgbuf[8]; 598 char *ifname; 599 600 /* Print header */ 601 if (!tflag && !cflag) 602 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 603 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 604 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 605 606again:; 607 mib[0] = CTL_NET; 608 mib[1] = PF_ROUTE; 609 mib[2] = 0; 610 mib[3] = AF_INET6; 611 mib[4] = NET_RT_FLAGS; 612 mib[5] = RTF_LLINFO; 613 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 614 err(1, "sysctl(PF_ROUTE estimate)"); 615 if (needed > 0) { 616 if ((buf = malloc(needed)) == NULL) 617 err(1, "malloc"); 618 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 619 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 620 lim = buf + needed; 621 } else 622 buf = lim = NULL; 623 624 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 625 int isrouter = 0, prbs = 0; 626 627 rtm = (struct rt_msghdr *)next; 628 sin = (struct sockaddr_in6 *)(rtm + 1); 629 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 630 631 /* 632 * Some OSes can produce a route that has the LINK flag but 633 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 634 * and BSD/OS, where xx is not the interface identifier on 635 * lo0). Such routes entry would annoy getnbrinfo() below, 636 * so we skip them. 637 * XXX: such routes should have the GATEWAY flag, not the 638 * LINK flag. However, there is rotten routing software 639 * that advertises all routes that have the GATEWAY flag. 640 * Thus, KAME kernel intentionally does not set the LINK flag. 641 * What is to be fixed is not ndp, but such routing software 642 * (and the kernel workaround)... 643 */ 644 if (sdl->sdl_family != AF_LINK) 645 continue; 646 647 if (!(rtm->rtm_flags & RTF_HOST)) 648 continue; 649 650 if (addr) { 651 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 652 continue; 653 found_entry = 1; 654 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 655 continue; 656 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 657 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 658 /* XXX: should scope id be filled in the kernel? */ 659 if (sin->sin6_scope_id == 0) 660 sin->sin6_scope_id = sdl->sdl_index; 661#ifdef __KAME__ 662 /* KAME specific hack; removed the embedded id */ 663 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 664#endif 665 } 666 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 667 sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0)); 668 if (cflag) { 669#ifdef RTF_WASCLONED 670 if (rtm->rtm_flags & RTF_WASCLONED) 671 delete(host_buf); 672#elif defined(RTF_CLONED) 673 if (rtm->rtm_flags & RTF_CLONED) 674 delete(host_buf); 675#else 676 delete(host_buf); 677#endif 678 continue; 679 } 680 gettimeofday(&time, 0); 681 if (tflag) 682 ts_print(&time); 683 684 addrwidth = strlen(host_buf); 685 if (addrwidth < W_ADDR) 686 addrwidth = W_ADDR; 687 llwidth = strlen(ether_str(sdl)); 688 if (W_ADDR + W_LL - addrwidth > llwidth) 689 llwidth = W_ADDR + W_LL - addrwidth; 690 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 691 if (!ifname) 692 ifname = "?"; 693 ifwidth = strlen(ifname); 694 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 695 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 696 697 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 698 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 699 700 /* Print neighbor discovery specific informations */ 701 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 702 if (nbi) { 703 if (nbi->expire > time.tv_sec) { 704 printf(" %-9.9s", 705 sec2str(nbi->expire - time.tv_sec)); 706 } else if (nbi->expire == 0) 707 printf(" %-9.9s", "permanent"); 708 else 709 printf(" %-9.9s", "expired"); 710 711 switch (nbi->state) { 712 case ND6_LLINFO_NOSTATE: 713 printf(" N"); 714 break; 715#ifdef ND6_LLINFO_WAITDELETE 716 case ND6_LLINFO_WAITDELETE: 717 printf(" W"); 718 break; 719#endif 720 case ND6_LLINFO_INCOMPLETE: 721 printf(" I"); 722 break; 723 case ND6_LLINFO_REACHABLE: 724 printf(" R"); 725 break; 726 case ND6_LLINFO_STALE: 727 printf(" S"); 728 break; 729 case ND6_LLINFO_DELAY: 730 printf(" D"); 731 break; 732 case ND6_LLINFO_PROBE: 733 printf(" P"); 734 break; 735 default: 736 printf(" ?"); 737 break; 738 } 739 740 isrouter = nbi->isrouter; 741 prbs = nbi->asked; 742 } else { 743 warnx("failed to get neighbor information"); 744 printf(" "); 745 } 746 747 /* 748 * other flags. R: router, P: proxy, W: ?? 749 */ 750 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 751 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 752 isrouter ? "R" : "", 753 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 754 } else { 755 sin = (struct sockaddr_in6 *) 756 (sdl->sdl_len + (char *)sdl); 757#if 0 /* W and P are mystery even for us */ 758 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 759 isrouter ? "R" : "", 760 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 761 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 762 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 763#else 764 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 765 isrouter ? "R" : "", 766 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 767#endif 768 } 769 printf(" %s", flgbuf); 770 771 if (prbs) 772 printf(" %d", prbs); 773 774 printf("\n"); 775 } 776 if (buf != NULL) 777 free(buf); 778 779 if (repeat) { 780 printf("\n"); 781 fflush(stdout); 782 sleep(repeat); 783 goto again; 784 } 785} 786 787static struct in6_nbrinfo * 788getnbrinfo(addr, ifindex, warning) 789 struct in6_addr *addr; 790 int ifindex; 791 int warning; 792{ 793 static struct in6_nbrinfo nbi; 794 int s; 795 796 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 797 err(1, "socket"); 798 799 bzero(&nbi, sizeof(nbi)); 800 if_indextoname(ifindex, nbi.ifname); 801 nbi.addr = *addr; 802 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 803 if (warning) 804 warn("ioctl(SIOCGNBRINFO_IN6)"); 805 close(s); 806 return(NULL); 807 } 808 809 close(s); 810 return(&nbi); 811} 812 813static char * 814ether_str(sdl) 815 struct sockaddr_dl *sdl; 816{ 817 static char hbuf[NI_MAXHOST]; 818 u_char *cp; 819 820 if (sdl->sdl_alen) { 821 cp = (u_char *)LLADDR(sdl); 822 snprintf(hbuf, sizeof(hbuf), "%x:%x:%x:%x:%x:%x", 823 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 824 } else 825 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 826 827 return(hbuf); 828} 829 830int 831ndp_ether_aton(a, n) 832 char *a; 833 u_char *n; 834{ 835 int i, o[6]; 836 837 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 838 &o[3], &o[4], &o[5]); 839 if (i != 6) { 840 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 841 return (1); 842 } 843 for (i = 0; i < 6; i++) 844 n[i] = o[i]; 845 return (0); 846} 847 848void 849usage() 850{ 851 printf("usage: ndp [-nt] hostname\n"); 852 printf(" ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n"); 853 printf(" ndp [-nt] -A wait\n"); 854 printf(" ndp [-nt] -d hostname\n"); 855 printf(" ndp [-nt] -f filename\n"); 856 printf(" ndp [-nt] -i interface [flags...]\n"); 857#ifdef SIOCSDEFIFACE_IN6 858 printf(" ndp [-nt] -I [interface|delete]\n"); 859#endif 860 printf(" ndp [-nt] -s nodename etheraddr [temp] [proxy]\n"); 861 exit(1); 862} 863 864int 865rtmsg(cmd) 866 int cmd; 867{ 868 static int seq; 869 int rlen; 870 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 871 register char *cp = m_rtmsg.m_space; 872 register int l; 873 874 errno = 0; 875 if (cmd == RTM_DELETE) 876 goto doit; 877 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 878 rtm->rtm_flags = flags; 879 rtm->rtm_version = RTM_VERSION; 880 881 switch (cmd) { 882 default: 883 fprintf(stderr, "ndp: internal wrong cmd\n"); 884 exit(1); 885 case RTM_ADD: 886 rtm->rtm_addrs |= RTA_GATEWAY; 887 if (expire_time) { 888 rtm->rtm_rmx.rmx_expire = expire_time; 889 rtm->rtm_inits = RTV_EXPIRE; 890 } 891 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 892 if (rtm->rtm_flags & RTF_ANNOUNCE) { 893 rtm->rtm_flags &= ~RTF_HOST; 894 rtm->rtm_addrs |= RTA_NETMASK; 895 } 896 /* FALLTHROUGH */ 897 case RTM_GET: 898 rtm->rtm_addrs |= RTA_DST; 899 } 900#define NEXTADDR(w, s) \ 901 if (rtm->rtm_addrs & (w)) { \ 902 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 903 904 NEXTADDR(RTA_DST, sin_m); 905 NEXTADDR(RTA_GATEWAY, sdl_m); 906 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 907 NEXTADDR(RTA_NETMASK, so_mask); 908 909 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 910doit: 911 l = rtm->rtm_msglen; 912 rtm->rtm_seq = ++seq; 913 rtm->rtm_type = cmd; 914 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 915 if (errno != ESRCH || cmd != RTM_DELETE) { 916 err(1, "writing to routing socket"); 917 /* NOTREACHED */ 918 } 919 } 920 do { 921 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 922 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 923 if (l < 0) 924 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 925 strerror(errno)); 926 return (0); 927} 928 929void 930ifinfo(ifname, argc, argv) 931 char *ifname; 932 int argc; 933 char **argv; 934{ 935 struct in6_ndireq nd; 936 int i, s; 937 u_int32_t newflags; 938#ifdef IPV6CTL_USETEMPADDR 939 u_int8_t nullbuf[8]; 940#endif 941 942 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 943 err(1, "socket"); 944 /* NOTREACHED */ 945 } 946 bzero(&nd, sizeof(nd)); 947 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 948 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 949 err(1, "ioctl(SIOCGIFINFO_IN6)"); 950 /* NOTREACHED */ 951 } 952#define ND nd.ndi 953 newflags = ND.flags; 954 for (i = 0; i < argc; i++) { 955 int clear = 0; 956 char *cp = argv[i]; 957 958 if (*cp == '-') { 959 clear = 1; 960 cp++; 961 } 962 963#define SETFLAG(s, f) \ 964 do {\ 965 if (strcmp(cp, (s)) == 0) {\ 966 if (clear)\ 967 newflags &= ~(f);\ 968 else\ 969 newflags |= (f);\ 970 }\ 971 } while (0) 972 SETFLAG("nud", ND6_IFF_PERFORMNUD); 973#ifdef ND6_IFF_ACCEPT_RTADV 974 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 975#endif 976#ifdef ND6_IFF_PREFER_SOURCE 977 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 978#endif 979 980 ND.flags = newflags; 981 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 982 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 983 /* NOTREACHED */ 984 } 985#undef SETFLAG 986 } 987 988 if (!ND.initialized) { 989 errx(1, "%s: not initialized yet", ifname); 990 /* NOTREACHED */ 991 } 992 993 printf("linkmtu=%d", ND.linkmtu); 994 printf(", maxmtu=%d", ND.maxmtu); 995 printf(", curhlim=%d", ND.chlim); 996 printf(", basereachable=%ds%dms", 997 ND.basereachable / 1000, ND.basereachable % 1000); 998 printf(", reachable=%ds", ND.reachable); 999 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 1000#ifdef IPV6CTL_USETEMPADDR 1001 memset(nullbuf, 0, sizeof(nullbuf)); 1002 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 1003 int j; 1004 u_int8_t *rbuf; 1005 1006 for (i = 0; i < 3; i++) { 1007 switch (i) { 1008 case 0: 1009 printf("\nRandom seed(0): "); 1010 rbuf = ND.randomseed0; 1011 break; 1012 case 1: 1013 printf("\nRandom seed(1): "); 1014 rbuf = ND.randomseed1; 1015 break; 1016 case 2: 1017 printf("\nRandom ID: "); 1018 rbuf = ND.randomid; 1019 break; 1020 } 1021 for (j = 0; j < 8; j++) 1022 printf("%02x", rbuf[j]); 1023 } 1024 } 1025#endif 1026 if (ND.flags) { 1027 printf("\nFlags: "); 1028 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1029 printf("nud "); 1030#ifdef ND6_IFF_ACCEPT_RTADV 1031 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1032 printf("accept_rtadv "); 1033#endif 1034#ifdef ND6_IFF_PREFER_SOURCE 1035 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1036 printf("prefer_source "); 1037#endif 1038 } 1039 putc('\n', stdout); 1040#undef ND 1041 1042 close(s); 1043} 1044 1045#ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1046#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1047#endif 1048 1049void 1050rtrlist() 1051{ 1052#ifdef ICMPV6CTL_ND6_DRLIST 1053 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1054 char *buf; 1055 struct in6_defrouter *p, *ep; 1056 size_t l; 1057 struct timeval time; 1058 1059 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1060 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1061 /*NOTREACHED*/ 1062 } 1063 buf = malloc(l); 1064 if (!buf) { 1065 err(1, "malloc"); 1066 /*NOTREACHED*/ 1067 } 1068 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1069 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1070 /*NOTREACHED*/ 1071 } 1072 1073 ep = (struct in6_defrouter *)(buf + l); 1074 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1075 int rtpref; 1076 1077 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1078 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1079 (nflag ? NI_NUMERICHOST : 0)) != 0) 1080 strlcpy(host_buf, "?", sizeof(host_buf)); 1081 1082 printf("%s if=%s", host_buf, 1083 if_indextoname(p->if_index, ifix_buf)); 1084 printf(", flags=%s%s", 1085 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1086 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1087 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1088 printf(", pref=%s", rtpref_str[rtpref]); 1089 1090 gettimeofday(&time, 0); 1091 if (p->expire == 0) 1092 printf(", expire=Never\n"); 1093 else 1094 printf(", expire=%s\n", 1095 sec2str(p->expire - time.tv_sec)); 1096 } 1097 free(buf); 1098#else 1099 struct in6_drlist dr; 1100 int s, i; 1101 struct timeval time; 1102 1103 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1104 err(1, "socket"); 1105 /* NOTREACHED */ 1106 } 1107 bzero(&dr, sizeof(dr)); 1108 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1109 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1110 err(1, "ioctl(SIOCGDRLST_IN6)"); 1111 /* NOTREACHED */ 1112 } 1113#define DR dr.defrouter[i] 1114 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1115 struct sockaddr_in6 sin6; 1116 1117 bzero(&sin6, sizeof(sin6)); 1118 sin6.sin6_family = AF_INET6; 1119 sin6.sin6_len = sizeof(sin6); 1120 sin6.sin6_addr = DR.rtaddr; 1121 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1122 sizeof(host_buf), NULL, 0, 1123 (nflag ? NI_NUMERICHOST : 0)); 1124 1125 printf("%s if=%s", host_buf, 1126 if_indextoname(DR.if_index, ifix_buf)); 1127 printf(", flags=%s%s", 1128 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1129 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1130 gettimeofday(&time, 0); 1131 if (DR.expire == 0) 1132 printf(", expire=Never\n"); 1133 else 1134 printf(", expire=%s\n", 1135 sec2str(DR.expire - time.tv_sec)); 1136 } 1137#undef DR 1138 close(s); 1139#endif 1140} 1141 1142void 1143plist() 1144{ 1145#ifdef ICMPV6CTL_ND6_PRLIST 1146 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1147 char *buf; 1148 struct in6_prefix *p, *ep, *n; 1149 struct sockaddr_in6 *advrtr; 1150 size_t l; 1151 struct timeval time; 1152 const int niflags = NI_NUMERICHOST; 1153 int ninflags = nflag ? NI_NUMERICHOST : 0; 1154 char namebuf[NI_MAXHOST]; 1155 1156 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1157 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1158 /*NOTREACHED*/ 1159 } 1160 buf = malloc(l); 1161 if (!buf) { 1162 err(1, "malloc"); 1163 /*NOTREACHED*/ 1164 } 1165 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1166 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1167 /*NOTREACHED*/ 1168 } 1169 1170 ep = (struct in6_prefix *)(buf + l); 1171 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1172 advrtr = (struct sockaddr_in6 *)(p + 1); 1173 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1174 1175 if (getnameinfo((struct sockaddr *)&p->prefix, 1176 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1177 NULL, 0, niflags) != 0) 1178 strlcpy(namebuf, "?", sizeof(namebuf)); 1179 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1180 if_indextoname(p->if_index, ifix_buf)); 1181 1182 gettimeofday(&time, 0); 1183 /* 1184 * meaning of fields, especially flags, is very different 1185 * by origin. notify the difference to the users. 1186 */ 1187 printf("flags=%s%s%s%s%s", 1188 p->raflags.onlink ? "L" : "", 1189 p->raflags.autonomous ? "A" : "", 1190 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1191 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1192#ifdef NDPRF_HOME 1193 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1194#else 1195 "" 1196#endif 1197 ); 1198 if (p->vltime == ND6_INFINITE_LIFETIME) 1199 printf(" vltime=infinity"); 1200 else 1201 printf(" vltime=%lu", (unsigned long)p->vltime); 1202 if (p->pltime == ND6_INFINITE_LIFETIME) 1203 printf(", pltime=infinity"); 1204 else 1205 printf(", pltime=%lu", (unsigned long)p->pltime); 1206 if (p->expire == 0) 1207 printf(", expire=Never"); 1208 else if (p->expire >= time.tv_sec) 1209 printf(", expire=%s", 1210 sec2str(p->expire - time.tv_sec)); 1211 else 1212 printf(", expired"); 1213 printf(", ref=%d", p->refcnt); 1214 printf("\n"); 1215 /* 1216 * "advertising router" list is meaningful only if the prefix 1217 * information is from RA. 1218 */ 1219 if (p->advrtrs) { 1220 int j; 1221 struct sockaddr_in6 *sin6; 1222 1223 sin6 = advrtr; 1224 printf(" advertised by\n"); 1225 for (j = 0; j < p->advrtrs; j++) { 1226 struct in6_nbrinfo *nbi; 1227 1228 if (getnameinfo((struct sockaddr *)sin6, 1229 sin6->sin6_len, namebuf, sizeof(namebuf), 1230 NULL, 0, ninflags) != 0) 1231 strlcpy(namebuf, "?", sizeof(namebuf)); 1232 printf(" %s", namebuf); 1233 1234 nbi = getnbrinfo(&sin6->sin6_addr, 1235 p->if_index, 0); 1236 if (nbi) { 1237 switch (nbi->state) { 1238 case ND6_LLINFO_REACHABLE: 1239 case ND6_LLINFO_STALE: 1240 case ND6_LLINFO_DELAY: 1241 case ND6_LLINFO_PROBE: 1242 printf(" (reachable)\n"); 1243 break; 1244 default: 1245 printf(" (unreachable)\n"); 1246 } 1247 } else 1248 printf(" (no neighbor state)\n"); 1249 sin6++; 1250 } 1251 } else 1252 printf(" No advertising router\n"); 1253 } 1254 free(buf); 1255#else 1256 struct in6_prlist pr; 1257 int s, i; 1258 struct timeval time; 1259 1260 gettimeofday(&time, 0); 1261 1262 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1263 err(1, "socket"); 1264 /* NOTREACHED */ 1265 } 1266 bzero(&pr, sizeof(pr)); 1267 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1268 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1269 err(1, "ioctl(SIOCGPRLST_IN6)"); 1270 /* NOTREACHED */ 1271 } 1272#define PR pr.prefix[i] 1273 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1274 struct sockaddr_in6 p6; 1275 char namebuf[NI_MAXHOST]; 1276 int niflags; 1277 1278#ifdef NDPRF_ONLINK 1279 p6 = PR.prefix; 1280#else 1281 memset(&p6, 0, sizeof(p6)); 1282 p6.sin6_family = AF_INET6; 1283 p6.sin6_len = sizeof(p6); 1284 p6.sin6_addr = PR.prefix; 1285#endif 1286 1287 /* 1288 * copy link index to sin6_scope_id field. 1289 * XXX: KAME specific. 1290 */ 1291 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1292 u_int16_t linkid; 1293 1294 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1295 sizeof(linkid)); 1296 linkid = ntohs(linkid); 1297 p6.sin6_scope_id = linkid; 1298 p6.sin6_addr.s6_addr[2] = 0; 1299 p6.sin6_addr.s6_addr[3] = 0; 1300 } 1301 1302 niflags = NI_NUMERICHOST; 1303 if (getnameinfo((struct sockaddr *)&p6, 1304 sizeof(p6), namebuf, sizeof(namebuf), 1305 NULL, 0, niflags)) { 1306 warnx("getnameinfo failed"); 1307 continue; 1308 } 1309 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1310 if_indextoname(PR.if_index, ifix_buf)); 1311 1312 gettimeofday(&time, 0); 1313 /* 1314 * meaning of fields, especially flags, is very different 1315 * by origin. notify the difference to the users. 1316 */ 1317#if 0 1318 printf(" %s", 1319 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1320#endif 1321#ifdef NDPRF_ONLINK 1322 printf("flags=%s%s%s%s%s", 1323 PR.raflags.onlink ? "L" : "", 1324 PR.raflags.autonomous ? "A" : "", 1325 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1326 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1327#ifdef NDPRF_HOME 1328 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1329#else 1330 "" 1331#endif 1332 ); 1333#else 1334 printf("flags=%s%s", 1335 PR.raflags.onlink ? "L" : "", 1336 PR.raflags.autonomous ? "A" : ""); 1337#endif 1338 if (PR.vltime == ND6_INFINITE_LIFETIME) 1339 printf(" vltime=infinity"); 1340 else 1341 printf(" vltime=%lu", PR.vltime); 1342 if (PR.pltime == ND6_INFINITE_LIFETIME) 1343 printf(", pltime=infinity"); 1344 else 1345 printf(", pltime=%lu", PR.pltime); 1346 if (PR.expire == 0) 1347 printf(", expire=Never"); 1348 else if (PR.expire >= time.tv_sec) 1349 printf(", expire=%s", 1350 sec2str(PR.expire - time.tv_sec)); 1351 else 1352 printf(", expired"); 1353#ifdef NDPRF_ONLINK 1354 printf(", ref=%d", PR.refcnt); 1355#endif 1356#if 0 1357 switch (PR.origin) { 1358 case PR_ORIG_RA: 1359 printf(", origin=RA"); 1360 break; 1361 case PR_ORIG_RR: 1362 printf(", origin=RR"); 1363 break; 1364 case PR_ORIG_STATIC: 1365 printf(", origin=static"); 1366 break; 1367 case PR_ORIG_KERNEL: 1368 printf(", origin=kernel"); 1369 break; 1370 default: 1371 printf(", origin=?"); 1372 break; 1373 } 1374#endif 1375 printf("\n"); 1376 /* 1377 * "advertising router" list is meaningful only if the prefix 1378 * information is from RA. 1379 */ 1380 if (0 && /* prefix origin is almost obsolted */ 1381 PR.origin != PR_ORIG_RA) 1382 ; 1383 else if (PR.advrtrs) { 1384 int j; 1385 printf(" advertised by\n"); 1386 for (j = 0; j < PR.advrtrs; j++) { 1387 struct sockaddr_in6 sin6; 1388 struct in6_nbrinfo *nbi; 1389 1390 bzero(&sin6, sizeof(sin6)); 1391 sin6.sin6_family = AF_INET6; 1392 sin6.sin6_len = sizeof(sin6); 1393 sin6.sin6_addr = PR.advrtr[j]; 1394 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1395 getnameinfo((struct sockaddr *)&sin6, 1396 sin6.sin6_len, host_buf, 1397 sizeof(host_buf), NULL, 0, 1398 (nflag ? NI_NUMERICHOST : 0)); 1399 printf(" %s", host_buf); 1400 1401 nbi = getnbrinfo(&sin6.sin6_addr, 1402 PR.if_index, 0); 1403 if (nbi) { 1404 switch (nbi->state) { 1405 case ND6_LLINFO_REACHABLE: 1406 case ND6_LLINFO_STALE: 1407 case ND6_LLINFO_DELAY: 1408 case ND6_LLINFO_PROBE: 1409 printf(" (reachable)\n"); 1410 break; 1411 default: 1412 printf(" (unreachable)\n"); 1413 } 1414 } else 1415 printf(" (no neighbor state)\n"); 1416 } 1417 if (PR.advrtrs > DRLSTSIZ) 1418 printf(" and %d routers\n", 1419 PR.advrtrs - DRLSTSIZ); 1420 } else 1421 printf(" No advertising router\n"); 1422 } 1423#undef PR 1424 close(s); 1425#endif 1426} 1427 1428void 1429pfx_flush() 1430{ 1431 char dummyif[IFNAMSIZ+8]; 1432 int s; 1433 1434 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1435 err(1, "socket"); 1436 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1437 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1438 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1439} 1440 1441void 1442rtr_flush() 1443{ 1444 char dummyif[IFNAMSIZ+8]; 1445 int s; 1446 1447 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1448 err(1, "socket"); 1449 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1450 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1451 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1452 1453 close(s); 1454} 1455 1456void 1457harmonize_rtr() 1458{ 1459 char dummyif[IFNAMSIZ+8]; 1460 int s; 1461 1462 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1463 err(1, "socket"); 1464 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1465 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1466 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1467 1468 close(s); 1469} 1470 1471#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1472static void 1473setdefif(ifname) 1474 char *ifname; 1475{ 1476 struct in6_ndifreq ndifreq; 1477 unsigned int ifindex; 1478 1479 if (strcasecmp(ifname, "delete") == 0) 1480 ifindex = 0; 1481 else { 1482 if ((ifindex = if_nametoindex(ifname)) == 0) 1483 err(1, "failed to resolve i/f index for %s", ifname); 1484 } 1485 1486 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1487 err(1, "socket"); 1488 1489 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1490 ndifreq.ifindex = ifindex; 1491 1492 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1493 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1494 1495 close(s); 1496} 1497 1498static void 1499getdefif() 1500{ 1501 struct in6_ndifreq ndifreq; 1502 char ifname[IFNAMSIZ+8]; 1503 1504 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1505 err(1, "socket"); 1506 1507 memset(&ndifreq, 0, sizeof(ndifreq)); 1508 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1509 1510 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1511 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1512 1513 if (ndifreq.ifindex == 0) 1514 printf("No default interface.\n"); 1515 else { 1516 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1517 err(1, "failed to resolve ifname for index %lu", 1518 ndifreq.ifindex); 1519 printf("ND default interface = %s\n", ifname); 1520 } 1521 1522 close(s); 1523} 1524#endif 1525 1526static char * 1527sec2str(total) 1528 time_t total; 1529{ 1530 static char result[256]; 1531 int days, hours, mins, secs; 1532 int first = 1; 1533 char *p = result; 1534 char *ep = &result[sizeof(result)]; 1535 int n; 1536 1537 days = total / 3600 / 24; 1538 hours = (total / 3600) % 24; 1539 mins = (total / 60) % 60; 1540 secs = total % 60; 1541 1542 if (days) { 1543 first = 0; 1544 n = snprintf(p, ep - p, "%dd", days); 1545 if (n < 0 || n >= ep - p) 1546 return "?"; 1547 p += n; 1548 } 1549 if (!first || hours) { 1550 first = 0; 1551 n = snprintf(p, ep - p, "%dh", hours); 1552 if (n < 0 || n >= ep - p) 1553 return "?"; 1554 p += n; 1555 } 1556 if (!first || mins) { 1557 first = 0; 1558 n = snprintf(p, ep - p, "%dm", mins); 1559 if (n < 0 || n >= ep - p) 1560 return "?"; 1561 p += n; 1562 } 1563 snprintf(p, ep - p, "%ds", secs); 1564 1565 return(result); 1566} 1567 1568/* 1569 * Print the timestamp 1570 * from tcpdump/util.c 1571 */ 1572static void 1573ts_print(tvp) 1574 const struct timeval *tvp; 1575{ 1576 int s; 1577 1578 /* Default */ 1579 s = (tvp->tv_sec + thiszone) % 86400; 1580 (void)printf("%02d:%02d:%02d.%06u ", 1581 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1582} 1583