ndp.c revision 151472
1/* $FreeBSD: head/usr.sbin/ndp/ndp.c 151472 2005-10-19 15:52:00Z suz $ */ 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 * 4. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 */ 63 64/* 65 * Based on: 66 * "@(#) Copyright (c) 1984, 1993\n\ 67 * The Regents of the University of California. All rights reserved.\n"; 68 * 69 * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; 70 */ 71 72/* 73 * ndp - display, set, delete and flush neighbor cache 74 */ 75 76 77#include <sys/param.h> 78#include <sys/file.h> 79#include <sys/ioctl.h> 80#include <sys/socket.h> 81#include <sys/sysctl.h> 82#include <sys/time.h> 83#include <sys/queue.h> 84 85#include <net/if.h> 86#include <net/if_var.h> 87#include <net/if_dl.h> 88#include <net/if_types.h> 89#include <net/route.h> 90 91#include <netinet/in.h> 92#include <netinet/if_ether.h> 93 94#include <netinet/icmp6.h> 95#include <netinet6/in6_var.h> 96#include <netinet6/nd6.h> 97 98#include <arpa/inet.h> 99 100#include <netdb.h> 101#include <errno.h> 102#include <nlist.h> 103#include <stdio.h> 104#include <string.h> 105#include <paths.h> 106#include <err.h> 107#include <stdlib.h> 108#include <fcntl.h> 109#include <unistd.h> 110#include <err.h> 111#include "gmt2local.h" 112 113/* packing rule for routing socket */ 114#define ROUNDUP(a) \ 115 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 116#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 117 118static pid_t pid; 119static int nflag; 120static int tflag; 121static int32_t thiszone; /* time difference with gmt */ 122static int s = -1; 123static int repeat = 0; 124 125char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 126char host_buf[NI_MAXHOST]; /* getnameinfo() */ 127char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 128 129int main __P((int, char **)); 130int file __P((char *)); 131void getsocket __P((void)); 132int set __P((int, char **)); 133void get __P((char *)); 134int delete __P((char *)); 135void dump __P((struct in6_addr *, int)); 136static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *, int, int)); 137static char *ether_str __P((struct sockaddr_dl *)); 138int ndp_ether_aton __P((char *, u_char *)); 139void usage __P((void)); 140int rtmsg __P((int)); 141void ifinfo __P((char *, int, char **)); 142void rtrlist __P((void)); 143void plist __P((void)); 144void pfx_flush __P((void)); 145void rtr_flush __P((void)); 146void harmonize_rtr __P((void)); 147#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 148static void getdefif __P((void)); 149static void setdefif __P((char *)); 150#endif 151static char *sec2str __P((time_t)); 152static char *ether_str __P((struct sockaddr_dl *)); 153static void ts_print __P((const struct timeval *)); 154 155#ifdef ICMPV6CTL_ND6_DRLIST 156static char *rtpref_str[] = { 157 "medium", /* 00 */ 158 "high", /* 01 */ 159 "rsv", /* 10 */ 160 "low" /* 11 */ 161}; 162#endif 163 164int mode = 0; 165char *arg = NULL; 166 167int 168main(argc, argv) 169 int argc; 170 char **argv; 171{ 172 int ch; 173 174 pid = getpid(); 175 thiszone = gmt2local(0); 176 while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 177 switch (ch) { 178 case 'a': 179 case 'c': 180 case 'p': 181 case 'r': 182 case 'H': 183 case 'P': 184 case 'R': 185 case 's': 186 case 'I': 187 if (mode) { 188 usage(); 189 /*NOTREACHED*/ 190 } 191 mode = ch; 192 arg = NULL; 193 break; 194 case 'd': 195 case 'f': 196 case 'i' : 197 if (mode) { 198 usage(); 199 /*NOTREACHED*/ 200 } 201 mode = ch; 202 arg = optarg; 203 break; 204 case 'n': 205 nflag = 1; 206 break; 207 case 't': 208 tflag = 1; 209 break; 210 case 'A': 211 if (mode) { 212 usage(); 213 /*NOTREACHED*/ 214 } 215 mode = 'a'; 216 repeat = atoi(optarg); 217 if (repeat < 0) { 218 usage(); 219 /*NOTREACHED*/ 220 } 221 break; 222 default: 223 usage(); 224 } 225 226 argc -= optind; 227 argv += optind; 228 229 switch (mode) { 230 case 'a': 231 case 'c': 232 if (argc != 0) { 233 usage(); 234 /*NOTREACHED*/ 235 } 236 dump(0, mode == 'c'); 237 break; 238 case 'd': 239 if (argc != 0) { 240 usage(); 241 /*NOTREACHED*/ 242 } 243 delete(arg); 244 break; 245 case 'I': 246#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 247 if (argc > 1) { 248 usage(); 249 /*NOTREACHED*/ 250 } else if (argc == 1) { 251 if (strcmp(*argv, "delete") == 0 || 252 if_nametoindex(*argv)) 253 setdefif(*argv); 254 else 255 errx(1, "invalid interface %s", *argv); 256 } 257 getdefif(); /* always call it to print the result */ 258 break; 259#else 260 errx(1, "not supported yet"); 261 /*NOTREACHED*/ 262#endif 263 case 'p': 264 if (argc != 0) { 265 usage(); 266 /*NOTREACHED*/ 267 } 268 plist(); 269 break; 270 case 'i': 271 ifinfo(arg, argc, argv); 272 break; 273 case 'r': 274 if (argc != 0) { 275 usage(); 276 /*NOTREACHED*/ 277 } 278 rtrlist(); 279 break; 280 case 's': 281 if (argc < 2 || argc > 4) 282 usage(); 283 exit(set(argc, argv) ? 1 : 0); 284 case 'H': 285 if (argc != 0) { 286 usage(); 287 /*NOTREACHED*/ 288 } 289 harmonize_rtr(); 290 break; 291 case 'P': 292 if (argc != 0) { 293 usage(); 294 /*NOTREACHED*/ 295 } 296 pfx_flush(); 297 break; 298 case 'R': 299 if (argc != 0) { 300 usage(); 301 /*NOTREACHED*/ 302 } 303 rtr_flush(); 304 break; 305 case 0: 306 if (argc != 1) { 307 usage(); 308 /*NOTREACHED*/ 309 } 310 get(argv[0]); 311 break; 312 } 313 exit(0); 314} 315 316/* 317 * Process a file to set standard ndp entries 318 */ 319int 320file(name) 321 char *name; 322{ 323 FILE *fp; 324 int i, retval; 325 char line[100], arg[5][50], *args[5]; 326 327 if ((fp = fopen(name, "r")) == NULL) { 328 fprintf(stderr, "ndp: cannot open %s\n", name); 329 exit(1); 330 } 331 args[0] = &arg[0][0]; 332 args[1] = &arg[1][0]; 333 args[2] = &arg[2][0]; 334 args[3] = &arg[3][0]; 335 args[4] = &arg[4][0]; 336 retval = 0; 337 while (fgets(line, 100, fp) != NULL) { 338 i = sscanf(line, "%49s %49s %49s %49s %49s", 339 arg[0], arg[1], arg[2], arg[3], arg[4]); 340 if (i < 2) { 341 fprintf(stderr, "ndp: bad line: %s\n", line); 342 retval = 1; 343 continue; 344 } 345 if (set(i, args)) 346 retval = 1; 347 } 348 fclose(fp); 349 return (retval); 350} 351 352void 353getsocket() 354{ 355 if (s < 0) { 356 s = socket(PF_ROUTE, SOCK_RAW, 0); 357 if (s < 0) { 358 err(1, "socket"); 359 /* NOTREACHED */ 360 } 361 } 362} 363 364struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 365struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 366struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 367int expire_time, flags, found_entry; 368struct { 369 struct rt_msghdr m_rtm; 370 char m_space[512]; 371} m_rtmsg; 372 373/* 374 * Set an individual neighbor cache entry 375 */ 376int 377set(argc, argv) 378 int argc; 379 char **argv; 380{ 381 register struct sockaddr_in6 *sin = &sin_m; 382 register struct sockaddr_dl *sdl; 383 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 384 struct addrinfo hints, *res; 385 int gai_error; 386 u_char *ea; 387 char *host = argv[0], *eaddr = argv[1]; 388 389 getsocket(); 390 argc -= 2; 391 argv += 2; 392 sdl_m = blank_sdl; 393 sin_m = blank_sin; 394 395 bzero(&hints, sizeof(hints)); 396 hints.ai_family = AF_INET6; 397 gai_error = getaddrinfo(host, NULL, &hints, &res); 398 if (gai_error) { 399 fprintf(stderr, "ndp: %s: %s\n", host, 400 gai_strerror(gai_error)); 401 return 1; 402 } 403 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 404#ifdef __KAME__ 405 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 406 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 407 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 408 } 409#endif 410 ea = (u_char *)LLADDR(&sdl_m); 411 if (ndp_ether_aton(eaddr, ea) == 0) 412 sdl_m.sdl_alen = 6; 413 flags = expire_time = 0; 414 while (argc-- > 0) { 415 if (strncmp(argv[0], "temp", 4) == 0) { 416 struct timeval time; 417 418 gettimeofday(&time, 0); 419 expire_time = time.tv_sec + 20 * 60; 420 } else if (strncmp(argv[0], "proxy", 5) == 0) 421 flags |= RTF_ANNOUNCE; 422 argv++; 423 } 424 if (rtmsg(RTM_GET) < 0) { 425 errx(1, "RTM_GET(%s) failed", host); 426 /* NOTREACHED */ 427 } 428 sin = (struct sockaddr_in6 *)(rtm + 1); 429 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 430 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 431 if (sdl->sdl_family == AF_LINK && 432 (rtm->rtm_flags & RTF_LLINFO) && 433 !(rtm->rtm_flags & RTF_GATEWAY)) { 434 switch (sdl->sdl_type) { 435 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 436 case IFT_ISO88024: case IFT_ISO88025: 437 goto overwrite; 438 } 439 } 440 /* 441 * IPv4 arp command retries with sin_other = SIN_PROXY here. 442 */ 443 fprintf(stderr, "set: cannot configure a new entry\n"); 444 return 1; 445 } 446 447overwrite: 448 if (sdl->sdl_family != AF_LINK) { 449 printf("cannot intuit interface index and type for %s\n", host); 450 return (1); 451 } 452 sdl_m.sdl_type = sdl->sdl_type; 453 sdl_m.sdl_index = sdl->sdl_index; 454 return (rtmsg(RTM_ADD)); 455} 456 457/* 458 * Display an individual neighbor cache entry 459 */ 460void 461get(host) 462 char *host; 463{ 464 struct sockaddr_in6 *sin = &sin_m; 465 struct addrinfo hints, *res; 466 int gai_error; 467 468 sin_m = blank_sin; 469 bzero(&hints, sizeof(hints)); 470 hints.ai_family = AF_INET6; 471 gai_error = getaddrinfo(host, NULL, &hints, &res); 472 if (gai_error) { 473 fprintf(stderr, "ndp: %s: %s\n", host, 474 gai_strerror(gai_error)); 475 return; 476 } 477 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 478#ifdef __KAME__ 479 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 480 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 481 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 482 } 483#endif 484 dump(&sin->sin6_addr, 0); 485 if (found_entry == 0) { 486 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 487 sizeof(host_buf), NULL ,0, 488 (nflag ? NI_NUMERICHOST : 0)); 489 printf("%s (%s) -- no entry\n", host, host_buf); 490 exit(1); 491 } 492} 493 494/* 495 * Delete a neighbor cache entry 496 */ 497int 498delete(host) 499 char *host; 500{ 501 struct sockaddr_in6 *sin = &sin_m; 502 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 503 struct sockaddr_dl *sdl; 504 struct addrinfo hints, *res; 505 int gai_error; 506 507 getsocket(); 508 sin_m = blank_sin; 509 510 bzero(&hints, sizeof(hints)); 511 hints.ai_family = AF_INET6; 512 gai_error = getaddrinfo(host, NULL, &hints, &res); 513 if (gai_error) { 514 fprintf(stderr, "ndp: %s: %s\n", host, 515 gai_strerror(gai_error)); 516 return 1; 517 } 518 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 519#ifdef __KAME__ 520 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 521 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 522 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 523 } 524#endif 525 if (rtmsg(RTM_GET) < 0) { 526 errx(1, "RTM_GET(%s) failed", host); 527 /* NOTREACHED */ 528 } 529 sin = (struct sockaddr_in6 *)(rtm + 1); 530 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 531 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 532 if (sdl->sdl_family == AF_LINK && 533 (rtm->rtm_flags & RTF_LLINFO) && 534 !(rtm->rtm_flags & RTF_GATEWAY)) { 535 goto delete; 536 } 537 /* 538 * IPv4 arp command retries with sin_other = SIN_PROXY here. 539 */ 540 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 541 return 1; 542 } 543 544delete: 545 if (sdl->sdl_family != AF_LINK) { 546 printf("cannot locate %s\n", host); 547 return (1); 548 } 549 if (rtmsg(RTM_DELETE) == 0) { 550 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 551 552#ifdef __KAME__ 553 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 554 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 555 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 556 } 557#endif 558 getnameinfo((struct sockaddr *)&s6, 559 s6.sin6_len, host_buf, 560 sizeof(host_buf), NULL, 0, 561 (nflag ? NI_NUMERICHOST : 0)); 562 printf("%s (%s) deleted\n", host, host_buf); 563 } 564 565 return 0; 566} 567 568#define W_ADDR 36 569#define W_LL 17 570#define W_IF 6 571 572/* 573 * Dump the entire neighbor cache 574 */ 575void 576dump(addr, cflag) 577 struct in6_addr *addr; 578 int cflag; 579{ 580 int mib[6]; 581 size_t needed; 582 char *lim, *buf, *next; 583 struct rt_msghdr *rtm; 584 struct sockaddr_in6 *sin; 585 struct sockaddr_dl *sdl; 586 extern int h_errno; 587 struct in6_nbrinfo *nbi; 588 struct timeval time; 589 int addrwidth; 590 int llwidth; 591 int ifwidth; 592 char flgbuf[8]; 593 char *ifname; 594 595 /* Print header */ 596 if (!tflag && !cflag) 597 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 598 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 599 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 600 601again:; 602 mib[0] = CTL_NET; 603 mib[1] = PF_ROUTE; 604 mib[2] = 0; 605 mib[3] = AF_INET6; 606 mib[4] = NET_RT_FLAGS; 607 mib[5] = RTF_LLINFO; 608 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 609 err(1, "sysctl(PF_ROUTE estimate)"); 610 if (needed > 0) { 611 if ((buf = malloc(needed)) == NULL) 612 err(1, "malloc"); 613 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 614 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 615 lim = buf + needed; 616 } else 617 buf = lim = NULL; 618 619 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 620 int isrouter = 0, prbs = 0; 621 622 rtm = (struct rt_msghdr *)next; 623 sin = (struct sockaddr_in6 *)(rtm + 1); 624 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 625 626 /* 627 * Some OSes can produce a route that has the LINK flag but 628 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 629 * and BSD/OS, where xx is not the interface identifier on 630 * lo0). Such routes entry would annoy getnbrinfo() below, 631 * so we skip them. 632 * XXX: such routes should have the GATEWAY flag, not the 633 * LINK flag. However, there is rotten routing software 634 * that advertises all routes that have the GATEWAY flag. 635 * Thus, KAME kernel intentionally does not set the LINK flag. 636 * What is to be fixed is not ndp, but such routing software 637 * (and the kernel workaround)... 638 */ 639 if (sdl->sdl_family != AF_LINK) 640 continue; 641 642 if (!(rtm->rtm_flags & RTF_HOST)) 643 continue; 644 645 if (addr) { 646 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 647 continue; 648 found_entry = 1; 649 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 650 continue; 651 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 652 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 653 /* XXX: should scope id be filled in the kernel? */ 654 if (sin->sin6_scope_id == 0) 655 sin->sin6_scope_id = sdl->sdl_index; 656#ifdef __KAME__ 657 /* KAME specific hack; removed the embedded id */ 658 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 659#endif 660 } 661 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 662 sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0)); 663 if (cflag) { 664#ifdef RTF_WASCLONED 665 if (rtm->rtm_flags & RTF_WASCLONED) 666 delete(host_buf); 667#elif defined(RTF_CLONED) 668 if (rtm->rtm_flags & RTF_CLONED) 669 delete(host_buf); 670#else 671 delete(host_buf); 672#endif 673 continue; 674 } 675 gettimeofday(&time, 0); 676 if (tflag) 677 ts_print(&time); 678 679 addrwidth = strlen(host_buf); 680 if (addrwidth < W_ADDR) 681 addrwidth = W_ADDR; 682 llwidth = strlen(ether_str(sdl)); 683 if (W_ADDR + W_LL - addrwidth > llwidth) 684 llwidth = W_ADDR + W_LL - addrwidth; 685 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 686 if (!ifname) 687 ifname = "?"; 688 ifwidth = strlen(ifname); 689 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 690 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 691 692 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 693 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 694 695 /* Print neighbor discovery specific informations */ 696 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 697 if (nbi) { 698 if (nbi->expire > time.tv_sec) { 699 printf(" %-9.9s", 700 sec2str(nbi->expire - time.tv_sec)); 701 } else if (nbi->expire == 0) 702 printf(" %-9.9s", "permanent"); 703 else 704 printf(" %-9.9s", "expired"); 705 706 switch (nbi->state) { 707 case ND6_LLINFO_NOSTATE: 708 printf(" N"); 709 break; 710#ifdef ND6_LLINFO_WAITDELETE 711 case ND6_LLINFO_WAITDELETE: 712 printf(" W"); 713 break; 714#endif 715 case ND6_LLINFO_INCOMPLETE: 716 printf(" I"); 717 break; 718 case ND6_LLINFO_REACHABLE: 719 printf(" R"); 720 break; 721 case ND6_LLINFO_STALE: 722 printf(" S"); 723 break; 724 case ND6_LLINFO_DELAY: 725 printf(" D"); 726 break; 727 case ND6_LLINFO_PROBE: 728 printf(" P"); 729 break; 730 default: 731 printf(" ?"); 732 break; 733 } 734 735 isrouter = nbi->isrouter; 736 prbs = nbi->asked; 737 } else { 738 warnx("failed to get neighbor information"); 739 printf(" "); 740 } 741 742 /* 743 * other flags. R: router, P: proxy, W: ?? 744 */ 745 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 746 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 747 isrouter ? "R" : "", 748 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 749 } else { 750 sin = (struct sockaddr_in6 *) 751 (sdl->sdl_len + (char *)sdl); 752#if 0 /* W and P are mystery even for us */ 753 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 754 isrouter ? "R" : "", 755 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 756 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 757 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 758#else 759 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 760 isrouter ? "R" : "", 761 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 762#endif 763 } 764 printf(" %s", flgbuf); 765 766 if (prbs) 767 printf(" %d", prbs); 768 769 printf("\n"); 770 } 771 if (buf != NULL) 772 free(buf); 773 774 if (repeat) { 775 printf("\n"); 776 fflush(stdout); 777 sleep(repeat); 778 goto again; 779 } 780} 781 782static struct in6_nbrinfo * 783getnbrinfo(addr, ifindex, warning) 784 struct in6_addr *addr; 785 int ifindex; 786 int warning; 787{ 788 static struct in6_nbrinfo nbi; 789 int s; 790 791 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 792 err(1, "socket"); 793 794 bzero(&nbi, sizeof(nbi)); 795 if_indextoname(ifindex, nbi.ifname); 796 nbi.addr = *addr; 797 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 798 if (warning) 799 warn("ioctl(SIOCGNBRINFO_IN6)"); 800 close(s); 801 return(NULL); 802 } 803 804 close(s); 805 return(&nbi); 806} 807 808static char * 809ether_str(sdl) 810 struct sockaddr_dl *sdl; 811{ 812 static char hbuf[NI_MAXHOST]; 813 u_char *cp; 814 815 if (sdl->sdl_alen) { 816 cp = (u_char *)LLADDR(sdl); 817 snprintf(hbuf, sizeof(hbuf), "%x:%x:%x:%x:%x:%x", 818 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 819 } else 820 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 821 822 return(hbuf); 823} 824 825int 826ndp_ether_aton(a, n) 827 char *a; 828 u_char *n; 829{ 830 int i, o[6]; 831 832 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 833 &o[3], &o[4], &o[5]); 834 if (i != 6) { 835 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 836 return (1); 837 } 838 for (i = 0; i < 6; i++) 839 n[i] = o[i]; 840 return (0); 841} 842 843void 844usage() 845{ 846 printf("usage: ndp [-nt] hostname\n"); 847 printf(" ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n"); 848 printf(" ndp [-nt] -A wait\n"); 849 printf(" ndp [-nt] -d hostname\n"); 850 printf(" ndp [-nt] -f filename\n"); 851 printf(" ndp [-nt] -i interface [flags...]\n"); 852#ifdef SIOCSDEFIFACE_IN6 853 printf(" ndp [-nt] -I [interface|delete]\n"); 854#endif 855 printf(" ndp [-nt] -s nodename etheraddr [temp] [proxy]\n"); 856 exit(1); 857} 858 859int 860rtmsg(cmd) 861 int cmd; 862{ 863 static int seq; 864 int rlen; 865 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 866 register char *cp = m_rtmsg.m_space; 867 register int l; 868 869 errno = 0; 870 if (cmd == RTM_DELETE) 871 goto doit; 872 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 873 rtm->rtm_flags = flags; 874 rtm->rtm_version = RTM_VERSION; 875 876 switch (cmd) { 877 default: 878 fprintf(stderr, "ndp: internal wrong cmd\n"); 879 exit(1); 880 case RTM_ADD: 881 rtm->rtm_addrs |= RTA_GATEWAY; 882 if (expire_time) { 883 rtm->rtm_rmx.rmx_expire = expire_time; 884 rtm->rtm_inits = RTV_EXPIRE; 885 } 886 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 887 if (rtm->rtm_flags & RTF_ANNOUNCE) { 888 rtm->rtm_flags &= ~RTF_HOST; 889 rtm->rtm_addrs |= RTA_NETMASK; 890 } 891 /* FALLTHROUGH */ 892 case RTM_GET: 893 rtm->rtm_addrs |= RTA_DST; 894 } 895#define NEXTADDR(w, s) \ 896 if (rtm->rtm_addrs & (w)) { \ 897 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 898 899 NEXTADDR(RTA_DST, sin_m); 900 NEXTADDR(RTA_GATEWAY, sdl_m); 901 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 902 NEXTADDR(RTA_NETMASK, so_mask); 903 904 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 905doit: 906 l = rtm->rtm_msglen; 907 rtm->rtm_seq = ++seq; 908 rtm->rtm_type = cmd; 909 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 910 if (errno != ESRCH || cmd != RTM_DELETE) { 911 err(1, "writing to routing socket"); 912 /* NOTREACHED */ 913 } 914 } 915 do { 916 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 917 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 918 if (l < 0) 919 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 920 strerror(errno)); 921 return (0); 922} 923 924void 925ifinfo(ifname, argc, argv) 926 char *ifname; 927 int argc; 928 char **argv; 929{ 930 struct in6_ndireq nd; 931 int i, s; 932 u_int32_t newflags; 933#ifdef IPV6CTL_USETEMPADDR 934 u_int8_t nullbuf[8]; 935#endif 936 937 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 938 err(1, "socket"); 939 /* NOTREACHED */ 940 } 941 bzero(&nd, sizeof(nd)); 942 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 943 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 944 err(1, "ioctl(SIOCGIFINFO_IN6)"); 945 /* NOTREACHED */ 946 } 947#define ND nd.ndi 948 newflags = ND.flags; 949 for (i = 0; i < argc; i++) { 950 int clear = 0; 951 char *cp = argv[i]; 952 953 if (*cp == '-') { 954 clear = 1; 955 cp++; 956 } 957 958#define SETFLAG(s, f) \ 959 do {\ 960 if (strcmp(cp, (s)) == 0) {\ 961 if (clear)\ 962 newflags &= ~(f);\ 963 else\ 964 newflags |= (f);\ 965 }\ 966 } while (0) 967/* 968 * XXX: this macro is not 100% correct, in that it matches "nud" against 969 * "nudbogus". But we just let it go since this is minor. 970 */ 971#define SETVALUE(f, v) \ 972 do { \ 973 char *valptr; \ 974 unsigned long newval; \ 975 v = 0; /* unspecified */ \ 976 if (strncmp(cp, f, strlen(f)) == 0) { \ 977 valptr = strchr(cp, '='); \ 978 if (valptr == NULL) \ 979 err(1, "syntax error in %s field", (f)); \ 980 errno = 0; \ 981 newval = strtoul(++valptr, NULL, 0); \ 982 if (errno) \ 983 err(1, "syntax error in %s's value", (f)); \ 984 v = newval; \ 985 } \ 986 } while (0) 987 988 SETFLAG("nud", ND6_IFF_PERFORMNUD); 989#ifdef ND6_IFF_ACCEPT_RTADV 990 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 991#endif 992#ifdef ND6_IFF_PREFER_SOURCE 993 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 994#endif 995 SETVALUE("basereachable", ND.basereachable); 996 SETVALUE("retrans", ND.retrans); 997 SETVALUE("curhlim", ND.chlim); 998 999 ND.flags = newflags; 1000 if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) { 1001 err(1, "ioctl(SIOCSIFINFO_IN6)"); 1002 /* NOTREACHED */ 1003 } 1004#undef SETFLAG 1005#undef SETVALUE 1006 } 1007 1008 if (!ND.initialized) { 1009 errx(1, "%s: not initialized yet", ifname); 1010 /* NOTREACHED */ 1011 } 1012 1013 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 1014 err(1, "ioctl(SIOCGIFINFO_IN6)"); 1015 /* NOTREACHED */ 1016 } 1017 printf("linkmtu=%d", ND.linkmtu); 1018 printf(", maxmtu=%d", ND.maxmtu); 1019 printf(", curhlim=%d", ND.chlim); 1020 printf(", basereachable=%ds%dms", 1021 ND.basereachable / 1000, ND.basereachable % 1000); 1022 printf(", reachable=%ds", ND.reachable); 1023 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 1024#ifdef IPV6CTL_USETEMPADDR 1025 memset(nullbuf, 0, sizeof(nullbuf)); 1026 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 1027 int j; 1028 u_int8_t *rbuf; 1029 1030 for (i = 0; i < 3; i++) { 1031 switch (i) { 1032 case 0: 1033 printf("\nRandom seed(0): "); 1034 rbuf = ND.randomseed0; 1035 break; 1036 case 1: 1037 printf("\nRandom seed(1): "); 1038 rbuf = ND.randomseed1; 1039 break; 1040 case 2: 1041 printf("\nRandom ID: "); 1042 rbuf = ND.randomid; 1043 break; 1044 default: 1045 errx(1, "impossible case for tempaddr display"); 1046 } 1047 for (j = 0; j < 8; j++) 1048 printf("%02x", rbuf[j]); 1049 } 1050 } 1051#endif 1052 if (ND.flags) { 1053 printf("\nFlags: "); 1054 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1055 printf("nud "); 1056#ifdef ND6_IFF_ACCEPT_RTADV 1057 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1058 printf("accept_rtadv "); 1059#endif 1060#ifdef ND6_IFF_PREFER_SOURCE 1061 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1062 printf("prefer_source "); 1063#endif 1064 } 1065 putc('\n', stdout); 1066#undef ND 1067 1068 close(s); 1069} 1070 1071#ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1072#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1073#endif 1074 1075void 1076rtrlist() 1077{ 1078#ifdef ICMPV6CTL_ND6_DRLIST 1079 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1080 char *buf; 1081 struct in6_defrouter *p, *ep; 1082 size_t l; 1083 struct timeval time; 1084 1085 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1086 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1087 /*NOTREACHED*/ 1088 } 1089 if (l == 0) 1090 return; 1091 buf = malloc(l); 1092 if (!buf) { 1093 err(1, "malloc"); 1094 /*NOTREACHED*/ 1095 } 1096 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1097 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1098 /*NOTREACHED*/ 1099 } 1100 1101 ep = (struct in6_defrouter *)(buf + l); 1102 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1103 int rtpref; 1104 1105 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1106 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1107 (nflag ? NI_NUMERICHOST : 0)) != 0) 1108 strlcpy(host_buf, "?", sizeof(host_buf)); 1109 1110 printf("%s if=%s", host_buf, 1111 if_indextoname(p->if_index, ifix_buf)); 1112 printf(", flags=%s%s", 1113 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1114 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1115 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1116 printf(", pref=%s", rtpref_str[rtpref]); 1117 1118 gettimeofday(&time, 0); 1119 if (p->expire == 0) 1120 printf(", expire=Never\n"); 1121 else 1122 printf(", expire=%s\n", 1123 sec2str(p->expire - time.tv_sec)); 1124 } 1125 free(buf); 1126#else 1127 struct in6_drlist dr; 1128 int s, i; 1129 struct timeval time; 1130 1131 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1132 err(1, "socket"); 1133 /* NOTREACHED */ 1134 } 1135 bzero(&dr, sizeof(dr)); 1136 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1137 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1138 err(1, "ioctl(SIOCGDRLST_IN6)"); 1139 /* NOTREACHED */ 1140 } 1141#define DR dr.defrouter[i] 1142 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1143 struct sockaddr_in6 sin6; 1144 1145 bzero(&sin6, sizeof(sin6)); 1146 sin6.sin6_family = AF_INET6; 1147 sin6.sin6_len = sizeof(sin6); 1148 sin6.sin6_addr = DR.rtaddr; 1149 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1150 sizeof(host_buf), NULL, 0, 1151 (nflag ? NI_NUMERICHOST : 0)); 1152 1153 printf("%s if=%s", host_buf, 1154 if_indextoname(DR.if_index, ifix_buf)); 1155 printf(", flags=%s%s", 1156 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1157 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1158 gettimeofday(&time, 0); 1159 if (DR.expire == 0) 1160 printf(", expire=Never\n"); 1161 else 1162 printf(", expire=%s\n", 1163 sec2str(DR.expire - time.tv_sec)); 1164 } 1165#undef DR 1166 close(s); 1167#endif 1168} 1169 1170void 1171plist() 1172{ 1173#ifdef ICMPV6CTL_ND6_PRLIST 1174 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1175 char *buf; 1176 struct in6_prefix *p, *ep, *n; 1177 struct sockaddr_in6 *advrtr; 1178 size_t l; 1179 struct timeval time; 1180 const int niflags = NI_NUMERICHOST; 1181 int ninflags = nflag ? NI_NUMERICHOST : 0; 1182 char namebuf[NI_MAXHOST]; 1183 1184 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1185 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1186 /*NOTREACHED*/ 1187 } 1188 buf = malloc(l); 1189 if (!buf) { 1190 err(1, "malloc"); 1191 /*NOTREACHED*/ 1192 } 1193 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1194 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1195 /*NOTREACHED*/ 1196 } 1197 1198 ep = (struct in6_prefix *)(buf + l); 1199 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1200 advrtr = (struct sockaddr_in6 *)(p + 1); 1201 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1202 1203 if (getnameinfo((struct sockaddr *)&p->prefix, 1204 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1205 NULL, 0, niflags) != 0) 1206 strlcpy(namebuf, "?", sizeof(namebuf)); 1207 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1208 if_indextoname(p->if_index, ifix_buf)); 1209 1210 gettimeofday(&time, 0); 1211 /* 1212 * meaning of fields, especially flags, is very different 1213 * by origin. notify the difference to the users. 1214 */ 1215 printf("flags=%s%s%s%s%s", 1216 p->raflags.onlink ? "L" : "", 1217 p->raflags.autonomous ? "A" : "", 1218 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1219 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1220#ifdef NDPRF_HOME 1221 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1222#else 1223 "" 1224#endif 1225 ); 1226 if (p->vltime == ND6_INFINITE_LIFETIME) 1227 printf(" vltime=infinity"); 1228 else 1229 printf(" vltime=%lu", (unsigned long)p->vltime); 1230 if (p->pltime == ND6_INFINITE_LIFETIME) 1231 printf(", pltime=infinity"); 1232 else 1233 printf(", pltime=%lu", (unsigned long)p->pltime); 1234 if (p->expire == 0) 1235 printf(", expire=Never"); 1236 else if (p->expire >= time.tv_sec) 1237 printf(", expire=%s", 1238 sec2str(p->expire - time.tv_sec)); 1239 else 1240 printf(", expired"); 1241 printf(", ref=%d", p->refcnt); 1242 printf("\n"); 1243 /* 1244 * "advertising router" list is meaningful only if the prefix 1245 * information is from RA. 1246 */ 1247 if (p->advrtrs) { 1248 int j; 1249 struct sockaddr_in6 *sin6; 1250 1251 sin6 = advrtr; 1252 printf(" advertised by\n"); 1253 for (j = 0; j < p->advrtrs; j++) { 1254 struct in6_nbrinfo *nbi; 1255 1256 if (getnameinfo((struct sockaddr *)sin6, 1257 sin6->sin6_len, namebuf, sizeof(namebuf), 1258 NULL, 0, ninflags) != 0) 1259 strlcpy(namebuf, "?", sizeof(namebuf)); 1260 printf(" %s", namebuf); 1261 1262 nbi = getnbrinfo(&sin6->sin6_addr, 1263 p->if_index, 0); 1264 if (nbi) { 1265 switch (nbi->state) { 1266 case ND6_LLINFO_REACHABLE: 1267 case ND6_LLINFO_STALE: 1268 case ND6_LLINFO_DELAY: 1269 case ND6_LLINFO_PROBE: 1270 printf(" (reachable)\n"); 1271 break; 1272 default: 1273 printf(" (unreachable)\n"); 1274 } 1275 } else 1276 printf(" (no neighbor state)\n"); 1277 sin6++; 1278 } 1279 } else 1280 printf(" No advertising router\n"); 1281 } 1282 free(buf); 1283#else 1284 struct in6_prlist pr; 1285 int s, i; 1286 struct timeval time; 1287 1288 gettimeofday(&time, 0); 1289 1290 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1291 err(1, "socket"); 1292 /* NOTREACHED */ 1293 } 1294 bzero(&pr, sizeof(pr)); 1295 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1296 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1297 err(1, "ioctl(SIOCGPRLST_IN6)"); 1298 /* NOTREACHED */ 1299 } 1300#define PR pr.prefix[i] 1301 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1302 struct sockaddr_in6 p6; 1303 char namebuf[NI_MAXHOST]; 1304 int niflags; 1305 1306#ifdef NDPRF_ONLINK 1307 p6 = PR.prefix; 1308#else 1309 memset(&p6, 0, sizeof(p6)); 1310 p6.sin6_family = AF_INET6; 1311 p6.sin6_len = sizeof(p6); 1312 p6.sin6_addr = PR.prefix; 1313#endif 1314 1315 /* 1316 * copy link index to sin6_scope_id field. 1317 * XXX: KAME specific. 1318 */ 1319 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1320 u_int16_t linkid; 1321 1322 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1323 sizeof(linkid)); 1324 linkid = ntohs(linkid); 1325 p6.sin6_scope_id = linkid; 1326 p6.sin6_addr.s6_addr[2] = 0; 1327 p6.sin6_addr.s6_addr[3] = 0; 1328 } 1329 1330 niflags = NI_NUMERICHOST; 1331 if (getnameinfo((struct sockaddr *)&p6, 1332 sizeof(p6), namebuf, sizeof(namebuf), 1333 NULL, 0, niflags)) { 1334 warnx("getnameinfo failed"); 1335 continue; 1336 } 1337 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1338 if_indextoname(PR.if_index, ifix_buf)); 1339 1340 gettimeofday(&time, 0); 1341 /* 1342 * meaning of fields, especially flags, is very different 1343 * by origin. notify the difference to the users. 1344 */ 1345#if 0 1346 printf(" %s", 1347 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1348#endif 1349#ifdef NDPRF_ONLINK 1350 printf("flags=%s%s%s%s%s", 1351 PR.raflags.onlink ? "L" : "", 1352 PR.raflags.autonomous ? "A" : "", 1353 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1354 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1355#ifdef NDPRF_HOME 1356 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1357#else 1358 "" 1359#endif 1360 ); 1361#else 1362 printf("flags=%s%s", 1363 PR.raflags.onlink ? "L" : "", 1364 PR.raflags.autonomous ? "A" : ""); 1365#endif 1366 if (PR.vltime == ND6_INFINITE_LIFETIME) 1367 printf(" vltime=infinity"); 1368 else 1369 printf(" vltime=%lu", PR.vltime); 1370 if (PR.pltime == ND6_INFINITE_LIFETIME) 1371 printf(", pltime=infinity"); 1372 else 1373 printf(", pltime=%lu", PR.pltime); 1374 if (PR.expire == 0) 1375 printf(", expire=Never"); 1376 else if (PR.expire >= time.tv_sec) 1377 printf(", expire=%s", 1378 sec2str(PR.expire - time.tv_sec)); 1379 else 1380 printf(", expired"); 1381#ifdef NDPRF_ONLINK 1382 printf(", ref=%d", PR.refcnt); 1383#endif 1384#if 0 1385 switch (PR.origin) { 1386 case PR_ORIG_RA: 1387 printf(", origin=RA"); 1388 break; 1389 case PR_ORIG_RR: 1390 printf(", origin=RR"); 1391 break; 1392 case PR_ORIG_STATIC: 1393 printf(", origin=static"); 1394 break; 1395 case PR_ORIG_KERNEL: 1396 printf(", origin=kernel"); 1397 break; 1398 default: 1399 printf(", origin=?"); 1400 break; 1401 } 1402#endif 1403 printf("\n"); 1404 /* 1405 * "advertising router" list is meaningful only if the prefix 1406 * information is from RA. 1407 */ 1408 if (0 && /* prefix origin is almost obsolted */ 1409 PR.origin != PR_ORIG_RA) 1410 ; 1411 else if (PR.advrtrs) { 1412 int j; 1413 printf(" advertised by\n"); 1414 for (j = 0; j < PR.advrtrs; j++) { 1415 struct sockaddr_in6 sin6; 1416 struct in6_nbrinfo *nbi; 1417 1418 bzero(&sin6, sizeof(sin6)); 1419 sin6.sin6_family = AF_INET6; 1420 sin6.sin6_len = sizeof(sin6); 1421 sin6.sin6_addr = PR.advrtr[j]; 1422 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1423 getnameinfo((struct sockaddr *)&sin6, 1424 sin6.sin6_len, host_buf, 1425 sizeof(host_buf), NULL, 0, 1426 (nflag ? NI_NUMERICHOST : 0)); 1427 printf(" %s", host_buf); 1428 1429 nbi = getnbrinfo(&sin6.sin6_addr, 1430 PR.if_index, 0); 1431 if (nbi) { 1432 switch (nbi->state) { 1433 case ND6_LLINFO_REACHABLE: 1434 case ND6_LLINFO_STALE: 1435 case ND6_LLINFO_DELAY: 1436 case ND6_LLINFO_PROBE: 1437 printf(" (reachable)\n"); 1438 break; 1439 default: 1440 printf(" (unreachable)\n"); 1441 } 1442 } else 1443 printf(" (no neighbor state)\n"); 1444 } 1445 if (PR.advrtrs > DRLSTSIZ) 1446 printf(" and %d routers\n", 1447 PR.advrtrs - DRLSTSIZ); 1448 } else 1449 printf(" No advertising router\n"); 1450 } 1451#undef PR 1452 close(s); 1453#endif 1454} 1455 1456void 1457pfx_flush() 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, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1466 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1467} 1468 1469void 1470rtr_flush() 1471{ 1472 char dummyif[IFNAMSIZ+8]; 1473 int s; 1474 1475 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1476 err(1, "socket"); 1477 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1478 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1479 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1480 1481 close(s); 1482} 1483 1484void 1485harmonize_rtr() 1486{ 1487 char dummyif[IFNAMSIZ+8]; 1488 int s; 1489 1490 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1491 err(1, "socket"); 1492 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1493 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1494 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1495 1496 close(s); 1497} 1498 1499#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1500static void 1501setdefif(ifname) 1502 char *ifname; 1503{ 1504 struct in6_ndifreq ndifreq; 1505 unsigned int ifindex; 1506 1507 if (strcasecmp(ifname, "delete") == 0) 1508 ifindex = 0; 1509 else { 1510 if ((ifindex = if_nametoindex(ifname)) == 0) 1511 err(1, "failed to resolve i/f index for %s", ifname); 1512 } 1513 1514 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1515 err(1, "socket"); 1516 1517 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1518 ndifreq.ifindex = ifindex; 1519 1520 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1521 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1522 1523 close(s); 1524} 1525 1526static void 1527getdefif() 1528{ 1529 struct in6_ndifreq ndifreq; 1530 char ifname[IFNAMSIZ+8]; 1531 1532 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1533 err(1, "socket"); 1534 1535 memset(&ndifreq, 0, sizeof(ndifreq)); 1536 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1537 1538 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1539 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1540 1541 if (ndifreq.ifindex == 0) 1542 printf("No default interface.\n"); 1543 else { 1544 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1545 err(1, "failed to resolve ifname for index %lu", 1546 ndifreq.ifindex); 1547 printf("ND default interface = %s\n", ifname); 1548 } 1549 1550 close(s); 1551} 1552#endif 1553 1554static char * 1555sec2str(total) 1556 time_t total; 1557{ 1558 static char result[256]; 1559 int days, hours, mins, secs; 1560 int first = 1; 1561 char *p = result; 1562 char *ep = &result[sizeof(result)]; 1563 int n; 1564 1565 days = total / 3600 / 24; 1566 hours = (total / 3600) % 24; 1567 mins = (total / 60) % 60; 1568 secs = total % 60; 1569 1570 if (days) { 1571 first = 0; 1572 n = snprintf(p, ep - p, "%dd", days); 1573 if (n < 0 || n >= ep - p) 1574 return "?"; 1575 p += n; 1576 } 1577 if (!first || hours) { 1578 first = 0; 1579 n = snprintf(p, ep - p, "%dh", hours); 1580 if (n < 0 || n >= ep - p) 1581 return "?"; 1582 p += n; 1583 } 1584 if (!first || mins) { 1585 first = 0; 1586 n = snprintf(p, ep - p, "%dm", mins); 1587 if (n < 0 || n >= ep - p) 1588 return "?"; 1589 p += n; 1590 } 1591 snprintf(p, ep - p, "%ds", secs); 1592 1593 return(result); 1594} 1595 1596/* 1597 * Print the timestamp 1598 * from tcpdump/util.c 1599 */ 1600static void 1601ts_print(tvp) 1602 const struct timeval *tvp; 1603{ 1604 int s; 1605 1606 /* Default */ 1607 s = (tvp->tv_sec + thiszone) % 86400; 1608 (void)printf("%02d:%02d:%02d.%06u ", 1609 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1610} 1611