ndp.c revision 122615
1/* $FreeBSD: head/usr.sbin/ndp/ndp.c 122615 2003-11-13 16:02:44Z ume $ */ 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 sleep(repeat); 782 goto again; 783 } 784} 785 786static struct in6_nbrinfo * 787getnbrinfo(addr, ifindex, warning) 788 struct in6_addr *addr; 789 int ifindex; 790 int warning; 791{ 792 static struct in6_nbrinfo nbi; 793 int s; 794 795 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 796 err(1, "socket"); 797 798 bzero(&nbi, sizeof(nbi)); 799 if_indextoname(ifindex, nbi.ifname); 800 nbi.addr = *addr; 801 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 802 if (warning) 803 warn("ioctl(SIOCGNBRINFO_IN6)"); 804 close(s); 805 return(NULL); 806 } 807 808 close(s); 809 return(&nbi); 810} 811 812static char * 813ether_str(sdl) 814 struct sockaddr_dl *sdl; 815{ 816 static char hbuf[NI_MAXHOST]; 817 u_char *cp; 818 819 if (sdl->sdl_alen) { 820 cp = (u_char *)LLADDR(sdl); 821 snprintf(hbuf, sizeof(hbuf), "%x:%x:%x:%x:%x:%x", 822 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 823 } else 824 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 825 826 return(hbuf); 827} 828 829int 830ndp_ether_aton(a, n) 831 char *a; 832 u_char *n; 833{ 834 int i, o[6]; 835 836 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 837 &o[3], &o[4], &o[5]); 838 if (i != 6) { 839 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 840 return (1); 841 } 842 for (i = 0; i < 6; i++) 843 n[i] = o[i]; 844 return (0); 845} 846 847void 848usage() 849{ 850 printf("usage: ndp [-nt] hostname\n"); 851 printf(" ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n"); 852 printf(" ndp [-nt] -A wait\n"); 853 printf(" ndp [-nt] -d hostname\n"); 854 printf(" ndp [-nt] -f filename\n"); 855 printf(" ndp [-nt] -i interface [flags...]\n"); 856#ifdef SIOCSDEFIFACE_IN6 857 printf(" ndp [-nt] -I [interface|delete]\n"); 858#endif 859 printf(" ndp [-nt] -s nodename etheraddr [temp] [proxy]\n"); 860 exit(1); 861} 862 863int 864rtmsg(cmd) 865 int cmd; 866{ 867 static int seq; 868 int rlen; 869 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 870 register char *cp = m_rtmsg.m_space; 871 register int l; 872 873 errno = 0; 874 if (cmd == RTM_DELETE) 875 goto doit; 876 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 877 rtm->rtm_flags = flags; 878 rtm->rtm_version = RTM_VERSION; 879 880 switch (cmd) { 881 default: 882 fprintf(stderr, "ndp: internal wrong cmd\n"); 883 exit(1); 884 case RTM_ADD: 885 rtm->rtm_addrs |= RTA_GATEWAY; 886 if (expire_time) { 887 rtm->rtm_rmx.rmx_expire = expire_time; 888 rtm->rtm_inits = RTV_EXPIRE; 889 } 890 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 891 if (rtm->rtm_flags & RTF_ANNOUNCE) { 892 rtm->rtm_flags &= ~RTF_HOST; 893 rtm->rtm_flags |= RTA_NETMASK; 894 } 895 /* FALLTHROUGH */ 896 case RTM_GET: 897 rtm->rtm_addrs |= RTA_DST; 898 } 899#define NEXTADDR(w, s) \ 900 if (rtm->rtm_addrs & (w)) { \ 901 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 902 903 NEXTADDR(RTA_DST, sin_m); 904 NEXTADDR(RTA_GATEWAY, sdl_m); 905 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 906 NEXTADDR(RTA_NETMASK, so_mask); 907 908 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 909doit: 910 l = rtm->rtm_msglen; 911 rtm->rtm_seq = ++seq; 912 rtm->rtm_type = cmd; 913 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 914 if (errno != ESRCH || cmd != RTM_DELETE) { 915 err(1, "writing to routing socket"); 916 /* NOTREACHED */ 917 } 918 } 919 do { 920 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 921 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 922 if (l < 0) 923 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 924 strerror(errno)); 925 return (0); 926} 927 928void 929ifinfo(ifname, argc, argv) 930 char *ifname; 931 int argc; 932 char **argv; 933{ 934 struct in6_ndireq nd; 935 int i, s; 936 u_int32_t newflags; 937#ifdef IPV6CTL_USETEMPADDR 938 u_int8_t nullbuf[8]; 939#endif 940 941 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 942 err(1, "socket"); 943 /* NOTREACHED */ 944 } 945 bzero(&nd, sizeof(nd)); 946 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 947 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 948 err(1, "ioctl(SIOCGIFINFO_IN6)"); 949 /* NOTREACHED */ 950 } 951#define ND nd.ndi 952 newflags = ND.flags; 953 for (i = 0; i < argc; i++) { 954 int clear = 0; 955 char *cp = argv[i]; 956 957 if (*cp == '-') { 958 clear = 1; 959 cp++; 960 } 961 962#define SETFLAG(s, f) \ 963 do {\ 964 if (strcmp(cp, (s)) == 0) {\ 965 if (clear)\ 966 newflags &= ~(f);\ 967 else\ 968 newflags |= (f);\ 969 }\ 970 } while (0) 971 SETFLAG("nud", ND6_IFF_PERFORMNUD); 972#ifdef ND6_IFF_ACCEPT_RTADV 973 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 974#endif 975#ifdef ND6_IFF_PREFER_SOURCE 976 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 977#endif 978 979 ND.flags = newflags; 980 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 981 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 982 /* NOTREACHED */ 983 } 984#undef SETFLAG 985 } 986 987 if (!ND.initialized) { 988 errx(1, "%s: not initialized yet", ifname); 989 /* NOTREACHED */ 990 } 991 992 printf("linkmtu=%d", ND.linkmtu); 993 printf(", maxmtu=%d", ND.maxmtu); 994 printf(", curhlim=%d", ND.chlim); 995 printf(", basereachable=%ds%dms", 996 ND.basereachable / 1000, ND.basereachable % 1000); 997 printf(", reachable=%ds", ND.reachable); 998 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 999#ifdef IPV6CTL_USETEMPADDR 1000 memset(nullbuf, 0, sizeof(nullbuf)); 1001 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 1002 int j; 1003 u_int8_t *rbuf; 1004 1005 for (i = 0; i < 3; i++) { 1006 switch (i) { 1007 case 0: 1008 printf("\nRandom seed(0): "); 1009 rbuf = ND.randomseed0; 1010 break; 1011 case 1: 1012 printf("\nRandom seed(1): "); 1013 rbuf = ND.randomseed1; 1014 break; 1015 case 2: 1016 printf("\nRandom ID: "); 1017 rbuf = ND.randomid; 1018 break; 1019 } 1020 for (j = 0; j < 8; j++) 1021 printf("%02x", rbuf[j]); 1022 } 1023 } 1024#endif 1025 if (ND.flags) { 1026 printf("\nFlags: "); 1027 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1028 printf("nud "); 1029#ifdef ND6_IFF_ACCEPT_RTADV 1030 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1031 printf("accept_rtadv "); 1032#endif 1033#ifdef ND6_IFF_PREFER_SOURCE 1034 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1035 printf("prefer_source "); 1036#endif 1037 } 1038 putc('\n', stdout); 1039#undef ND 1040 1041 close(s); 1042} 1043 1044#ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1045#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1046#endif 1047 1048void 1049rtrlist() 1050{ 1051#ifdef ICMPV6CTL_ND6_DRLIST 1052 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1053 char *buf; 1054 struct in6_defrouter *p, *ep; 1055 size_t l; 1056 struct timeval time; 1057 1058 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1059 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1060 /*NOTREACHED*/ 1061 } 1062 buf = malloc(l); 1063 if (!buf) { 1064 err(1, "malloc"); 1065 /*NOTREACHED*/ 1066 } 1067 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1068 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1069 /*NOTREACHED*/ 1070 } 1071 1072 ep = (struct in6_defrouter *)(buf + l); 1073 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1074 int rtpref; 1075 1076 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1077 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1078 (nflag ? NI_NUMERICHOST : 0)) != 0) 1079 strlcpy(host_buf, "?", sizeof(host_buf)); 1080 1081 printf("%s if=%s", host_buf, 1082 if_indextoname(p->if_index, ifix_buf)); 1083 printf(", flags=%s%s", 1084 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1085 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1086 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1087 printf(", pref=%s", rtpref_str[rtpref]); 1088 1089 gettimeofday(&time, 0); 1090 if (p->expire == 0) 1091 printf(", expire=Never\n"); 1092 else 1093 printf(", expire=%s\n", 1094 sec2str(p->expire - time.tv_sec)); 1095 } 1096 free(buf); 1097#else 1098 struct in6_drlist dr; 1099 int s, i; 1100 struct timeval time; 1101 1102 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1103 err(1, "socket"); 1104 /* NOTREACHED */ 1105 } 1106 bzero(&dr, sizeof(dr)); 1107 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1108 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1109 err(1, "ioctl(SIOCGDRLST_IN6)"); 1110 /* NOTREACHED */ 1111 } 1112#define DR dr.defrouter[i] 1113 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1114 struct sockaddr_in6 sin6; 1115 1116 bzero(&sin6, sizeof(sin6)); 1117 sin6.sin6_family = AF_INET6; 1118 sin6.sin6_len = sizeof(sin6); 1119 sin6.sin6_addr = DR.rtaddr; 1120 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1121 sizeof(host_buf), NULL, 0, 1122 (nflag ? NI_NUMERICHOST : 0)); 1123 1124 printf("%s if=%s", host_buf, 1125 if_indextoname(DR.if_index, ifix_buf)); 1126 printf(", flags=%s%s", 1127 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1128 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1129 gettimeofday(&time, 0); 1130 if (DR.expire == 0) 1131 printf(", expire=Never\n"); 1132 else 1133 printf(", expire=%s\n", 1134 sec2str(DR.expire - time.tv_sec)); 1135 } 1136#undef DR 1137 close(s); 1138#endif 1139} 1140 1141void 1142plist() 1143{ 1144#ifdef ICMPV6CTL_ND6_PRLIST 1145 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1146 char *buf; 1147 struct in6_prefix *p, *ep, *n; 1148 struct sockaddr_in6 *advrtr; 1149 size_t l; 1150 struct timeval time; 1151 const int niflags = NI_NUMERICHOST; 1152 int ninflags = nflag ? NI_NUMERICHOST : 0; 1153 char namebuf[NI_MAXHOST]; 1154 1155 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1156 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1157 /*NOTREACHED*/ 1158 } 1159 buf = malloc(l); 1160 if (!buf) { 1161 err(1, "malloc"); 1162 /*NOTREACHED*/ 1163 } 1164 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1165 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1166 /*NOTREACHED*/ 1167 } 1168 1169 ep = (struct in6_prefix *)(buf + l); 1170 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1171 advrtr = (struct sockaddr_in6 *)(p + 1); 1172 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1173 1174 if (getnameinfo((struct sockaddr *)&p->prefix, 1175 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1176 NULL, 0, niflags) != 0) 1177 strlcpy(namebuf, "?", sizeof(namebuf)); 1178 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1179 if_indextoname(p->if_index, ifix_buf)); 1180 1181 gettimeofday(&time, 0); 1182 /* 1183 * meaning of fields, especially flags, is very different 1184 * by origin. notify the difference to the users. 1185 */ 1186 printf("flags=%s%s%s%s%s", 1187 p->raflags.onlink ? "L" : "", 1188 p->raflags.autonomous ? "A" : "", 1189 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1190 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1191#ifdef NDPRF_HOME 1192 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1193#else 1194 "" 1195#endif 1196 ); 1197 if (p->vltime == ND6_INFINITE_LIFETIME) 1198 printf(" vltime=infinity"); 1199 else 1200 printf(" vltime=%lu", (unsigned long)p->vltime); 1201 if (p->pltime == ND6_INFINITE_LIFETIME) 1202 printf(", pltime=infinity"); 1203 else 1204 printf(", pltime=%lu", (unsigned long)p->pltime); 1205 if (p->expire == 0) 1206 printf(", expire=Never"); 1207 else if (p->expire >= time.tv_sec) 1208 printf(", expire=%s", 1209 sec2str(p->expire - time.tv_sec)); 1210 else 1211 printf(", expired"); 1212 printf(", ref=%d", p->refcnt); 1213 printf("\n"); 1214 /* 1215 * "advertising router" list is meaningful only if the prefix 1216 * information is from RA. 1217 */ 1218 if (p->advrtrs) { 1219 int j; 1220 struct sockaddr_in6 *sin6; 1221 1222 sin6 = advrtr; 1223 printf(" advertised by\n"); 1224 for (j = 0; j < p->advrtrs; j++) { 1225 struct in6_nbrinfo *nbi; 1226 1227 if (getnameinfo((struct sockaddr *)sin6, 1228 sin6->sin6_len, namebuf, sizeof(namebuf), 1229 NULL, 0, ninflags) != 0) 1230 strlcpy(namebuf, "?", sizeof(namebuf)); 1231 printf(" %s", namebuf); 1232 1233 nbi = getnbrinfo(&sin6->sin6_addr, 1234 p->if_index, 0); 1235 if (nbi) { 1236 switch (nbi->state) { 1237 case ND6_LLINFO_REACHABLE: 1238 case ND6_LLINFO_STALE: 1239 case ND6_LLINFO_DELAY: 1240 case ND6_LLINFO_PROBE: 1241 printf(" (reachable)\n"); 1242 break; 1243 default: 1244 printf(" (unreachable)\n"); 1245 } 1246 } else 1247 printf(" (no neighbor state)\n"); 1248 sin6++; 1249 } 1250 } else 1251 printf(" No advertising router\n"); 1252 } 1253 free(buf); 1254#else 1255 struct in6_prlist pr; 1256 int s, i; 1257 struct timeval time; 1258 1259 gettimeofday(&time, 0); 1260 1261 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1262 err(1, "socket"); 1263 /* NOTREACHED */ 1264 } 1265 bzero(&pr, sizeof(pr)); 1266 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1267 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1268 err(1, "ioctl(SIOCGPRLST_IN6)"); 1269 /* NOTREACHED */ 1270 } 1271#define PR pr.prefix[i] 1272 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1273 struct sockaddr_in6 p6; 1274 char namebuf[NI_MAXHOST]; 1275 int niflags; 1276 1277#ifdef NDPRF_ONLINK 1278 p6 = PR.prefix; 1279#else 1280 memset(&p6, 0, sizeof(p6)); 1281 p6.sin6_family = AF_INET6; 1282 p6.sin6_len = sizeof(p6); 1283 p6.sin6_addr = PR.prefix; 1284#endif 1285 1286 /* 1287 * copy link index to sin6_scope_id field. 1288 * XXX: KAME specific. 1289 */ 1290 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1291 u_int16_t linkid; 1292 1293 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1294 sizeof(linkid)); 1295 linkid = ntohs(linkid); 1296 p6.sin6_scope_id = linkid; 1297 p6.sin6_addr.s6_addr[2] = 0; 1298 p6.sin6_addr.s6_addr[3] = 0; 1299 } 1300 1301 niflags = NI_NUMERICHOST; 1302 if (getnameinfo((struct sockaddr *)&p6, 1303 sizeof(p6), namebuf, sizeof(namebuf), 1304 NULL, 0, niflags)) { 1305 warnx("getnameinfo failed"); 1306 continue; 1307 } 1308 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1309 if_indextoname(PR.if_index, ifix_buf)); 1310 1311 gettimeofday(&time, 0); 1312 /* 1313 * meaning of fields, especially flags, is very different 1314 * by origin. notify the difference to the users. 1315 */ 1316#if 0 1317 printf(" %s", 1318 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1319#endif 1320#ifdef NDPRF_ONLINK 1321 printf("flags=%s%s%s%s%s", 1322 PR.raflags.onlink ? "L" : "", 1323 PR.raflags.autonomous ? "A" : "", 1324 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1325 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1326#ifdef NDPRF_HOME 1327 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1328#else 1329 "" 1330#endif 1331 ); 1332#else 1333 printf("flags=%s%s", 1334 PR.raflags.onlink ? "L" : "", 1335 PR.raflags.autonomous ? "A" : ""); 1336#endif 1337 if (PR.vltime == ND6_INFINITE_LIFETIME) 1338 printf(" vltime=infinity"); 1339 else 1340 printf(" vltime=%lu", PR.vltime); 1341 if (PR.pltime == ND6_INFINITE_LIFETIME) 1342 printf(", pltime=infinity"); 1343 else 1344 printf(", pltime=%lu", PR.pltime); 1345 if (PR.expire == 0) 1346 printf(", expire=Never"); 1347 else if (PR.expire >= time.tv_sec) 1348 printf(", expire=%s", 1349 sec2str(PR.expire - time.tv_sec)); 1350 else 1351 printf(", expired"); 1352#ifdef NDPRF_ONLINK 1353 printf(", ref=%d", PR.refcnt); 1354#endif 1355#if 0 1356 switch (PR.origin) { 1357 case PR_ORIG_RA: 1358 printf(", origin=RA"); 1359 break; 1360 case PR_ORIG_RR: 1361 printf(", origin=RR"); 1362 break; 1363 case PR_ORIG_STATIC: 1364 printf(", origin=static"); 1365 break; 1366 case PR_ORIG_KERNEL: 1367 printf(", origin=kernel"); 1368 break; 1369 default: 1370 printf(", origin=?"); 1371 break; 1372 } 1373#endif 1374 printf("\n"); 1375 /* 1376 * "advertising router" list is meaningful only if the prefix 1377 * information is from RA. 1378 */ 1379 if (0 && /* prefix origin is almost obsolted */ 1380 PR.origin != PR_ORIG_RA) 1381 ; 1382 else if (PR.advrtrs) { 1383 int j; 1384 printf(" advertised by\n"); 1385 for (j = 0; j < PR.advrtrs; j++) { 1386 struct sockaddr_in6 sin6; 1387 struct in6_nbrinfo *nbi; 1388 1389 bzero(&sin6, sizeof(sin6)); 1390 sin6.sin6_family = AF_INET6; 1391 sin6.sin6_len = sizeof(sin6); 1392 sin6.sin6_addr = PR.advrtr[j]; 1393 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1394 getnameinfo((struct sockaddr *)&sin6, 1395 sin6.sin6_len, host_buf, 1396 sizeof(host_buf), NULL, 0, 1397 (nflag ? NI_NUMERICHOST : 0)); 1398 printf(" %s", host_buf); 1399 1400 nbi = getnbrinfo(&sin6.sin6_addr, 1401 PR.if_index, 0); 1402 if (nbi) { 1403 switch (nbi->state) { 1404 case ND6_LLINFO_REACHABLE: 1405 case ND6_LLINFO_STALE: 1406 case ND6_LLINFO_DELAY: 1407 case ND6_LLINFO_PROBE: 1408 printf(" (reachable)\n"); 1409 break; 1410 default: 1411 printf(" (unreachable)\n"); 1412 } 1413 } else 1414 printf(" (no neighbor state)\n"); 1415 } 1416 if (PR.advrtrs > DRLSTSIZ) 1417 printf(" and %d routers\n", 1418 PR.advrtrs - DRLSTSIZ); 1419 } else 1420 printf(" No advertising router\n"); 1421 } 1422#undef PR 1423 close(s); 1424#endif 1425} 1426 1427void 1428pfx_flush() 1429{ 1430 char dummyif[IFNAMSIZ+8]; 1431 int s; 1432 1433 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1434 err(1, "socket"); 1435 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1436 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1437 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1438} 1439 1440void 1441rtr_flush() 1442{ 1443 char dummyif[IFNAMSIZ+8]; 1444 int s; 1445 1446 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1447 err(1, "socket"); 1448 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1449 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1450 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1451 1452 close(s); 1453} 1454 1455void 1456harmonize_rtr() 1457{ 1458 char dummyif[IFNAMSIZ+8]; 1459 int s; 1460 1461 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1462 err(1, "socket"); 1463 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1464 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1465 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1466 1467 close(s); 1468} 1469 1470#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1471static void 1472setdefif(ifname) 1473 char *ifname; 1474{ 1475 struct in6_ndifreq ndifreq; 1476 unsigned int ifindex; 1477 1478 if (strcasecmp(ifname, "delete") == 0) 1479 ifindex = 0; 1480 else { 1481 if ((ifindex = if_nametoindex(ifname)) == 0) 1482 err(1, "failed to resolve i/f index for %s", ifname); 1483 } 1484 1485 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1486 err(1, "socket"); 1487 1488 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1489 ndifreq.ifindex = ifindex; 1490 1491 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1492 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1493 1494 close(s); 1495} 1496 1497static void 1498getdefif() 1499{ 1500 struct in6_ndifreq ndifreq; 1501 char ifname[IFNAMSIZ+8]; 1502 1503 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1504 err(1, "socket"); 1505 1506 memset(&ndifreq, 0, sizeof(ndifreq)); 1507 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1508 1509 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1510 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1511 1512 if (ndifreq.ifindex == 0) 1513 printf("No default interface.\n"); 1514 else { 1515 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1516 err(1, "failed to resolve ifname for index %lu", 1517 ndifreq.ifindex); 1518 printf("ND default interface = %s\n", ifname); 1519 } 1520 1521 close(s); 1522} 1523#endif 1524 1525static char * 1526sec2str(total) 1527 time_t total; 1528{ 1529 static char result[256]; 1530 int days, hours, mins, secs; 1531 int first = 1; 1532 char *p = result; 1533 char *ep = &result[sizeof(result)]; 1534 int n; 1535 1536 days = total / 3600 / 24; 1537 hours = (total / 3600) % 24; 1538 mins = (total / 60) % 60; 1539 secs = total % 60; 1540 1541 if (days) { 1542 first = 0; 1543 n = snprintf(p, ep - p, "%dd", days); 1544 if (n < 0 || n >= ep - p) 1545 return "?"; 1546 p += n; 1547 } 1548 if (!first || hours) { 1549 first = 0; 1550 n = snprintf(p, ep - p, "%dh", hours); 1551 if (n < 0 || n >= ep - p) 1552 return "?"; 1553 p += n; 1554 } 1555 if (!first || mins) { 1556 first = 0; 1557 n = snprintf(p, ep - p, "%dm", mins); 1558 if (n < 0 || n >= ep - p) 1559 return "?"; 1560 p += n; 1561 } 1562 snprintf(p, ep - p, "%ds", secs); 1563 1564 return(result); 1565} 1566 1567/* 1568 * Print the timestamp 1569 * from tcpdump/util.c 1570 */ 1571static void 1572ts_print(tvp) 1573 const struct timeval *tvp; 1574{ 1575 int s; 1576 1577 /* Default */ 1578 s = (tvp->tv_sec + thiszone) % 86400; 1579 (void)printf("%02d:%02d:%02d.%06u ", 1580 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1581} 1582