ndp.c revision 1.34
1 /* $NetBSD: ndp.c,v 1.34 2006/03/05 23:47:08 rpaulo Exp $ */ 2 /* $KAME: ndp.c,v 1.121 2005/07/13 11:30:13 keiichi Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 /* 33 * Copyright (c) 1984, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Sun Microsystems, Inc. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 */ 63 64 /* 65 * Based on: 66 * "@(#) Copyright (c) 1984, 1993\n\ 67 * The Regents of the University of California. All rights reserved.\n"; 68 * 69 * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; 70 */ 71 72 /* 73 * ndp - display, set, delete and flush neighbor cache 74 */ 75 76 77 #include <sys/param.h> 78 #include <sys/file.h> 79 #include <sys/ioctl.h> 80 #include <sys/socket.h> 81 #include <sys/sysctl.h> 82 #include <sys/time.h> 83 84 #include <net/if.h> 85 #include <net/if_dl.h> 86 #include <net/if_types.h> 87 #include <net/route.h> 88 89 #include <netinet/in.h> 90 91 #include <netinet/icmp6.h> 92 #include <netinet6/in6_var.h> 93 #include <netinet6/nd6.h> 94 95 #include <arpa/inet.h> 96 97 #include <netdb.h> 98 #include <errno.h> 99 #include <nlist.h> 100 #include <stdio.h> 101 #include <string.h> 102 #include <paths.h> 103 #include <err.h> 104 #include <stdlib.h> 105 #include <fcntl.h> 106 #include <unistd.h> 107 #include <err.h> 108 #include "gmt2local.h" 109 110 /* packing rule for routing socket */ 111 #define ROUNDUP(a) \ 112 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 113 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 114 115 static pid_t pid; 116 static int nflag; 117 static int tflag; 118 static int32_t thiszone; /* time difference with gmt */ 119 static int s = -1; 120 static int repeat = 0; 121 122 char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 123 char host_buf[NI_MAXHOST]; /* getnameinfo() */ 124 char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 125 126 int main __P((int, char **)); 127 int file __P((char *)); 128 void getsocket __P((void)); 129 int set __P((int, char **)); 130 void get __P((char *)); 131 int delete __P((char *)); 132 void dump __P((struct in6_addr *, int)); 133 static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *, int, int)); 134 static char *ether_str __P((struct sockaddr_dl *)); 135 int ndp_ether_aton __P((char *, u_char *)); 136 void usage __P((void)); 137 int rtmsg __P((int)); 138 void ifinfo __P((char *, int, char **)); 139 void rtrlist __P((void)); 140 void plist __P((void)); 141 void pfx_flush __P((void)); 142 void rtrlist __P((void)); 143 void rtr_flush __P((void)); 144 void harmonize_rtr __P((void)); 145 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 146 static void getdefif __P((void)); 147 static void setdefif __P((char *)); 148 #endif 149 static char *sec2str __P((time_t)); 150 static char *ether_str __P((struct sockaddr_dl *)); 151 static void ts_print __P((const struct timeval *)); 152 153 #ifdef ICMPV6CTL_ND6_DRLIST 154 static char *rtpref_str[] = { 155 "medium", /* 00 */ 156 "high", /* 01 */ 157 "rsv", /* 10 */ 158 "low" /* 11 */ 159 }; 160 #endif 161 162 int mode = 0; 163 char *arg = NULL; 164 165 int 166 main(argc, argv) 167 int argc; 168 char **argv; 169 { 170 int ch; 171 172 pid = getpid(); 173 thiszone = gmt2local(0); 174 while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 175 switch (ch) { 176 case 'a': 177 case 'c': 178 case 'p': 179 case 'r': 180 case 'H': 181 case 'P': 182 case 'R': 183 case 's': 184 case 'I': 185 if (mode) { 186 usage(); 187 /*NOTREACHED*/ 188 } 189 mode = ch; 190 arg = NULL; 191 break; 192 case 'd': 193 case 'f': 194 case 'i' : 195 if (mode) { 196 usage(); 197 /*NOTREACHED*/ 198 } 199 mode = ch; 200 arg = optarg; 201 break; 202 case 'n': 203 nflag = 1; 204 break; 205 case 't': 206 tflag = 1; 207 break; 208 case 'A': 209 if (mode) { 210 usage(); 211 /*NOTREACHED*/ 212 } 213 mode = 'a'; 214 repeat = atoi(optarg); 215 if (repeat < 0) { 216 usage(); 217 /*NOTREACHED*/ 218 } 219 break; 220 default: 221 usage(); 222 } 223 224 argc -= optind; 225 argv += optind; 226 227 switch (mode) { 228 case 'a': 229 case 'c': 230 if (argc != 0) { 231 usage(); 232 /*NOTREACHED*/ 233 } 234 dump(0, mode == 'c'); 235 break; 236 case 'd': 237 if (argc != 0) { 238 usage(); 239 /*NOTREACHED*/ 240 } 241 delete(arg); 242 break; 243 case 'I': 244 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 245 if (argc > 1) { 246 usage(); 247 /*NOTREACHED*/ 248 } else if (argc == 1) { 249 if (strcmp(*argv, "delete") == 0 || 250 if_nametoindex(*argv)) 251 setdefif(*argv); 252 else 253 errx(1, "invalid interface %s", *argv); 254 } 255 getdefif(); /* always call it to print the result */ 256 break; 257 #else 258 errx(1, "not supported yet"); 259 /*NOTREACHED*/ 260 #endif 261 case 'p': 262 if (argc != 0) { 263 usage(); 264 /*NOTREACHED*/ 265 } 266 plist(); 267 break; 268 case 'i': 269 ifinfo(arg, argc, argv); 270 break; 271 case 'r': 272 if (argc != 0) { 273 usage(); 274 /*NOTREACHED*/ 275 } 276 rtrlist(); 277 break; 278 case 's': 279 if (argc < 2 || argc > 4) 280 usage(); 281 exit(set(argc, argv) ? 1 : 0); 282 case 'H': 283 if (argc != 0) { 284 usage(); 285 /*NOTREACHED*/ 286 } 287 harmonize_rtr(); 288 break; 289 case 'P': 290 if (argc != 0) { 291 usage(); 292 /*NOTREACHED*/ 293 } 294 pfx_flush(); 295 break; 296 case 'R': 297 if (argc != 0) { 298 usage(); 299 /*NOTREACHED*/ 300 } 301 rtr_flush(); 302 break; 303 case 0: 304 if (argc != 1) { 305 usage(); 306 /*NOTREACHED*/ 307 } 308 get(argv[0]); 309 break; 310 } 311 exit(0); 312 } 313 314 /* 315 * Process a file to set standard ndp entries 316 */ 317 int 318 file(name) 319 char *name; 320 { 321 FILE *fp; 322 int i, retval; 323 char line[100], arg[5][50], *args[5]; 324 325 if ((fp = fopen(name, "r")) == NULL) { 326 fprintf(stderr, "ndp: cannot open %s\n", name); 327 exit(1); 328 } 329 args[0] = &arg[0][0]; 330 args[1] = &arg[1][0]; 331 args[2] = &arg[2][0]; 332 args[3] = &arg[3][0]; 333 args[4] = &arg[4][0]; 334 retval = 0; 335 while (fgets(line, 100, fp) != NULL) { 336 i = sscanf(line, "%49s %49s %49s %49s %49s", 337 arg[0], arg[1], arg[2], arg[3], arg[4]); 338 if (i < 2) { 339 fprintf(stderr, "ndp: bad line: %s\n", line); 340 retval = 1; 341 continue; 342 } 343 if (set(i, args)) 344 retval = 1; 345 } 346 fclose(fp); 347 return (retval); 348 } 349 350 void 351 getsocket() 352 { 353 if (s < 0) { 354 s = socket(PF_ROUTE, SOCK_RAW, 0); 355 if (s < 0) { 356 err(1, "socket"); 357 /* NOTREACHED */ 358 } 359 } 360 } 361 362 struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 363 struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 364 struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 365 int expire_time, flags, found_entry; 366 struct { 367 struct rt_msghdr m_rtm; 368 char m_space[512]; 369 } m_rtmsg; 370 371 /* 372 * Set an individual neighbor cache entry 373 */ 374 int 375 set(argc, argv) 376 int argc; 377 char **argv; 378 { 379 register struct sockaddr_in6 *sin = &sin_m; 380 register struct sockaddr_dl *sdl; 381 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 382 struct addrinfo hints, *res; 383 int gai_error; 384 u_char *ea; 385 char *host = argv[0], *eaddr = argv[1]; 386 387 getsocket(); 388 argc -= 2; 389 argv += 2; 390 sdl_m = blank_sdl; 391 sin_m = blank_sin; 392 393 bzero(&hints, sizeof(hints)); 394 hints.ai_family = AF_INET6; 395 gai_error = getaddrinfo(host, NULL, &hints, &res); 396 if (gai_error) { 397 fprintf(stderr, "ndp: %s: %s\n", host, 398 gai_strerror(gai_error)); 399 return 1; 400 } 401 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 402 #ifdef __KAME__ 403 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 404 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 405 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 406 } 407 #endif 408 ea = (u_char *)LLADDR(&sdl_m); 409 if (ndp_ether_aton(eaddr, ea) == 0) 410 sdl_m.sdl_alen = 6; 411 flags = expire_time = 0; 412 while (argc-- > 0) { 413 if (strncmp(argv[0], "temp", 4) == 0) { 414 struct timeval time; 415 416 gettimeofday(&time, 0); 417 expire_time = time.tv_sec + 20 * 60; 418 } else if (strncmp(argv[0], "proxy", 5) == 0) 419 flags |= RTF_ANNOUNCE; 420 argv++; 421 } 422 if (rtmsg(RTM_GET) < 0) { 423 errx(1, "RTM_GET(%s) failed", host); 424 /* NOTREACHED */ 425 } 426 sin = (struct sockaddr_in6 *)(rtm + 1); 427 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 428 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 429 if (sdl->sdl_family == AF_LINK && 430 (rtm->rtm_flags & RTF_LLINFO) && 431 !(rtm->rtm_flags & RTF_GATEWAY)) { 432 switch (sdl->sdl_type) { 433 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 434 case IFT_ISO88024: case IFT_ISO88025: 435 goto overwrite; 436 } 437 } 438 /* 439 * IPv4 arp command retries with sin_other = SIN_PROXY here. 440 */ 441 fprintf(stderr, "set: cannot configure a new entry\n"); 442 return 1; 443 } 444 445 overwrite: 446 if (sdl->sdl_family != AF_LINK) { 447 printf("cannot intuit interface index and type for %s\n", host); 448 return (1); 449 } 450 sdl_m.sdl_type = sdl->sdl_type; 451 sdl_m.sdl_index = sdl->sdl_index; 452 return (rtmsg(RTM_ADD)); 453 } 454 455 /* 456 * Display an individual neighbor cache entry 457 */ 458 void 459 get(host) 460 char *host; 461 { 462 struct sockaddr_in6 *sin = &sin_m; 463 struct addrinfo hints, *res; 464 int gai_error; 465 466 sin_m = blank_sin; 467 bzero(&hints, sizeof(hints)); 468 hints.ai_family = AF_INET6; 469 gai_error = getaddrinfo(host, NULL, &hints, &res); 470 if (gai_error) { 471 fprintf(stderr, "ndp: %s: %s\n", host, 472 gai_strerror(gai_error)); 473 return; 474 } 475 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 476 #ifdef __KAME__ 477 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 478 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 479 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 480 } 481 #endif 482 dump(&sin->sin6_addr, 0); 483 if (found_entry == 0) { 484 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 485 sizeof(host_buf), NULL ,0, 486 (nflag ? NI_NUMERICHOST : 0)); 487 printf("%s (%s) -- no entry\n", host, host_buf); 488 exit(1); 489 } 490 } 491 492 /* 493 * Delete a neighbor cache entry 494 */ 495 int 496 delete(host) 497 char *host; 498 { 499 struct sockaddr_in6 *sin = &sin_m; 500 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 501 struct sockaddr_dl *sdl; 502 struct addrinfo hints, *res; 503 int gai_error; 504 505 getsocket(); 506 sin_m = blank_sin; 507 508 bzero(&hints, sizeof(hints)); 509 hints.ai_family = AF_INET6; 510 gai_error = getaddrinfo(host, NULL, &hints, &res); 511 if (gai_error) { 512 fprintf(stderr, "ndp: %s: %s\n", host, 513 gai_strerror(gai_error)); 514 return 1; 515 } 516 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 517 #ifdef __KAME__ 518 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 519 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 520 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 521 } 522 #endif 523 if (rtmsg(RTM_GET) < 0) { 524 errx(1, "RTM_GET(%s) failed", host); 525 /* NOTREACHED */ 526 } 527 sin = (struct sockaddr_in6 *)(rtm + 1); 528 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 529 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 530 if (sdl->sdl_family == AF_LINK && 531 (rtm->rtm_flags & RTF_LLINFO) && 532 !(rtm->rtm_flags & RTF_GATEWAY)) { 533 goto delete; 534 } 535 /* 536 * IPv4 arp command retries with sin_other = SIN_PROXY here. 537 */ 538 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 539 return 1; 540 } 541 542 delete: 543 if (sdl->sdl_family != AF_LINK) { 544 printf("cannot locate %s\n", host); 545 return (1); 546 } 547 if (rtmsg(RTM_DELETE) == 0) { 548 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 549 550 #ifdef __KAME__ 551 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 552 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 553 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 554 } 555 #endif 556 getnameinfo((struct sockaddr *)&s6, 557 s6.sin6_len, host_buf, 558 sizeof(host_buf), NULL, 0, 559 (nflag ? NI_NUMERICHOST : 0)); 560 printf("%s (%s) deleted\n", host, host_buf); 561 } 562 563 return 0; 564 } 565 566 #define W_ADDR 36 567 #define W_LL 17 568 #define W_IF 6 569 570 /* 571 * Dump the entire neighbor cache 572 */ 573 void 574 dump(addr, cflag) 575 struct in6_addr *addr; 576 int cflag; 577 { 578 int mib[6]; 579 size_t needed; 580 char *lim, *buf, *next; 581 struct rt_msghdr *rtm; 582 struct sockaddr_in6 *sin; 583 struct sockaddr_dl *sdl; 584 extern int h_errno; 585 struct in6_nbrinfo *nbi; 586 struct timeval time; 587 int addrwidth; 588 int llwidth; 589 int ifwidth; 590 char flgbuf[8]; 591 char *ifname; 592 593 /* Print header */ 594 if (!tflag && !cflag) 595 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 596 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 597 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 598 599 again:; 600 mib[0] = CTL_NET; 601 mib[1] = PF_ROUTE; 602 mib[2] = 0; 603 mib[3] = AF_INET6; 604 mib[4] = NET_RT_FLAGS; 605 mib[5] = RTF_LLINFO; 606 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 607 err(1, "sysctl(PF_ROUTE estimate)"); 608 if (needed > 0) { 609 if ((buf = malloc(needed)) == NULL) 610 err(1, "malloc"); 611 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 612 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 613 lim = buf + needed; 614 } else 615 buf = lim = NULL; 616 617 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 618 int isrouter = 0, prbs = 0; 619 620 rtm = (struct rt_msghdr *)next; 621 sin = (struct sockaddr_in6 *)(rtm + 1); 622 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 623 624 /* 625 * Some OSes can produce a route that has the LINK flag but 626 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 627 * and BSD/OS, where xx is not the interface identifier on 628 * lo0). Such routes entry would annoy getnbrinfo() below, 629 * so we skip them. 630 * XXX: such routes should have the GATEWAY flag, not the 631 * LINK flag. However, there is rotten routing software 632 * that advertises all routes that have the GATEWAY flag. 633 * Thus, KAME kernel intentionally does not set the LINK flag. 634 * What is to be fixed is not ndp, but such routing software 635 * (and the kernel workaround)... 636 */ 637 if (sdl->sdl_family != AF_LINK) 638 continue; 639 640 if (!(rtm->rtm_flags & RTF_HOST)) 641 continue; 642 643 if (addr) { 644 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 645 continue; 646 found_entry = 1; 647 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 648 continue; 649 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 650 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 651 /* XXX: should scope id be filled in the kernel? */ 652 if (sin->sin6_scope_id == 0) 653 sin->sin6_scope_id = sdl->sdl_index; 654 #ifdef __KAME__ 655 /* KAME specific hack; removed the embedded id */ 656 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 657 #endif 658 } 659 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 660 sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0)); 661 if (cflag) { 662 #ifdef RTF_WASCLONED 663 if (rtm->rtm_flags & RTF_WASCLONED) 664 delete(host_buf); 665 #elif defined(RTF_CLONED) 666 if (rtm->rtm_flags & RTF_CLONED) 667 delete(host_buf); 668 #else 669 delete(host_buf); 670 #endif 671 continue; 672 } 673 gettimeofday(&time, 0); 674 if (tflag) 675 ts_print(&time); 676 677 addrwidth = strlen(host_buf); 678 if (addrwidth < W_ADDR) 679 addrwidth = W_ADDR; 680 llwidth = strlen(ether_str(sdl)); 681 if (W_ADDR + W_LL - addrwidth > llwidth) 682 llwidth = W_ADDR + W_LL - addrwidth; 683 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 684 if (!ifname) 685 ifname = "?"; 686 ifwidth = strlen(ifname); 687 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 688 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 689 690 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 691 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 692 693 /* Print neighbor discovery specific informations */ 694 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 695 if (nbi) { 696 if (nbi->expire > time.tv_sec) { 697 printf(" %-9.9s", 698 sec2str(nbi->expire - time.tv_sec)); 699 } else if (nbi->expire == 0) 700 printf(" %-9.9s", "permanent"); 701 else 702 printf(" %-9.9s", "expired"); 703 704 switch (nbi->state) { 705 case ND6_LLINFO_NOSTATE: 706 printf(" N"); 707 break; 708 #ifdef ND6_LLINFO_WAITDELETE 709 case ND6_LLINFO_WAITDELETE: 710 printf(" W"); 711 break; 712 #endif 713 case ND6_LLINFO_INCOMPLETE: 714 printf(" I"); 715 break; 716 case ND6_LLINFO_REACHABLE: 717 printf(" R"); 718 break; 719 case ND6_LLINFO_STALE: 720 printf(" S"); 721 break; 722 case ND6_LLINFO_DELAY: 723 printf(" D"); 724 break; 725 case ND6_LLINFO_PROBE: 726 printf(" P"); 727 break; 728 default: 729 printf(" ?"); 730 break; 731 } 732 733 isrouter = nbi->isrouter; 734 prbs = nbi->asked; 735 } else { 736 warnx("failed to get neighbor information"); 737 printf(" "); 738 } 739 740 /* 741 * other flags. R: router, P: proxy, W: ?? 742 */ 743 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 744 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 745 isrouter ? "R" : "", 746 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 747 } else { 748 sin = (struct sockaddr_in6 *) 749 (sdl->sdl_len + (char *)sdl); 750 #if 0 /* W and P are mystery even for us */ 751 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 752 isrouter ? "R" : "", 753 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 754 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 755 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 756 #else 757 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 758 isrouter ? "R" : "", 759 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 760 #endif 761 } 762 printf(" %s", flgbuf); 763 764 if (prbs) 765 printf(" %d", prbs); 766 767 printf("\n"); 768 } 769 if (buf != NULL) 770 free(buf); 771 772 if (repeat) { 773 printf("\n"); 774 fflush(stdout); 775 sleep(repeat); 776 goto again; 777 } 778 } 779 780 static struct in6_nbrinfo * 781 getnbrinfo(addr, ifindex, warning) 782 struct in6_addr *addr; 783 int ifindex; 784 int warning; 785 { 786 static struct in6_nbrinfo nbi; 787 int s; 788 789 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 790 err(1, "socket"); 791 792 bzero(&nbi, sizeof(nbi)); 793 if_indextoname(ifindex, nbi.ifname); 794 nbi.addr = *addr; 795 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 796 if (warning) 797 warn("ioctl(SIOCGNBRINFO_IN6)"); 798 close(s); 799 return(NULL); 800 } 801 802 close(s); 803 return(&nbi); 804 } 805 806 static char * 807 ether_str(sdl) 808 struct sockaddr_dl *sdl; 809 { 810 static char hbuf[NI_MAXHOST]; 811 812 if (sdl->sdl_alen) { 813 if (getnameinfo((struct sockaddr *)sdl, sdl->sdl_len, 814 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) 815 snprintf(hbuf, sizeof(hbuf), "<invalid>"); 816 } else 817 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 818 819 return(hbuf); 820 } 821 822 int 823 ndp_ether_aton(a, n) 824 char *a; 825 u_char *n; 826 { 827 int i, o[6]; 828 829 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 830 &o[3], &o[4], &o[5]); 831 if (i != 6) { 832 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 833 return (1); 834 } 835 for (i = 0; i < 6; i++) 836 n[i] = o[i]; 837 return (0); 838 } 839 840 void 841 usage() 842 { 843 printf("usage: ndp [-nt] hostname\n"); 844 printf(" ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n"); 845 printf(" ndp [-nt] -A wait\n"); 846 printf(" ndp [-nt] -d hostname\n"); 847 printf(" ndp [-nt] -f filename\n"); 848 printf(" ndp [-nt] -i interface [flags...]\n"); 849 #ifdef SIOCSDEFIFACE_IN6 850 printf(" ndp [-nt] -I [interface|delete]\n"); 851 #endif 852 printf(" ndp [-nt] -s nodename etheraddr [temp] [proxy]\n"); 853 exit(1); 854 } 855 856 int 857 rtmsg(cmd) 858 int cmd; 859 { 860 static int seq; 861 int rlen; 862 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 863 register char *cp = m_rtmsg.m_space; 864 register int l; 865 866 errno = 0; 867 if (cmd == RTM_DELETE) 868 goto doit; 869 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 870 rtm->rtm_flags = flags; 871 rtm->rtm_version = RTM_VERSION; 872 873 switch (cmd) { 874 default: 875 fprintf(stderr, "ndp: internal wrong cmd\n"); 876 exit(1); 877 case RTM_ADD: 878 rtm->rtm_addrs |= RTA_GATEWAY; 879 if (expire_time) { 880 rtm->rtm_rmx.rmx_expire = expire_time; 881 rtm->rtm_inits = RTV_EXPIRE; 882 } 883 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 884 #if 0 /* we don't support ipv6addr/128 type proxying. */ 885 if (rtm->rtm_flags & RTF_ANNOUNCE) { 886 rtm->rtm_flags &= ~RTF_HOST; 887 rtm->rtm_addrs |= RTA_NETMASK; 888 } 889 #endif 890 /* FALLTHROUGH */ 891 case RTM_GET: 892 rtm->rtm_addrs |= RTA_DST; 893 } 894 #define NEXTADDR(w, s) \ 895 if (rtm->rtm_addrs & (w)) { \ 896 bcopy((char *)&s, cp, sizeof(s)); ADVANCE(cp, (struct sockaddr *)&s); } 897 898 NEXTADDR(RTA_DST, sin_m); 899 NEXTADDR(RTA_GATEWAY, sdl_m); 900 #if 0 /* we don't support ipv6addr/128 type proxying. */ 901 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 902 NEXTADDR(RTA_NETMASK, so_mask); 903 #endif 904 905 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 906 doit: 907 l = rtm->rtm_msglen; 908 rtm->rtm_seq = ++seq; 909 rtm->rtm_type = cmd; 910 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 911 if (errno != ESRCH || cmd != RTM_DELETE) { 912 err(1, "writing to routing socket"); 913 /* NOTREACHED */ 914 } 915 } 916 do { 917 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 918 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 919 if (l < 0) 920 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 921 strerror(errno)); 922 return (0); 923 } 924 925 void 926 ifinfo(ifname, argc, argv) 927 char *ifname; 928 int argc; 929 char **argv; 930 { 931 struct in6_ndireq nd; 932 int i, s; 933 u_int32_t newflags; 934 #ifdef IPV6CTL_USETEMPADDR 935 u_int8_t nullbuf[8]; 936 #endif 937 938 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 939 err(1, "socket"); 940 /* NOTREACHED */ 941 } 942 bzero(&nd, sizeof(nd)); 943 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 944 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 945 err(1, "ioctl(SIOCGIFINFO_IN6)"); 946 /* NOTREACHED */ 947 } 948 #define ND nd.ndi 949 newflags = ND.flags; 950 for (i = 0; i < argc; i++) { 951 int clear = 0; 952 char *cp = argv[i]; 953 954 if (*cp == '-') { 955 clear = 1; 956 cp++; 957 } 958 959 #define SETFLAG(s, f) \ 960 do {\ 961 if (strcmp(cp, (s)) == 0) {\ 962 if (clear)\ 963 newflags &= ~(f);\ 964 else\ 965 newflags |= (f);\ 966 }\ 967 } while (0) 968 /* 969 * XXX: this macro is not 100% correct, in that it matches "nud" against 970 * "nudbogus". But we just let it go since this is minor. 971 */ 972 #define SETVALUE(f, v) \ 973 do { \ 974 char *valptr; \ 975 unsigned long newval; \ 976 v = 0; /* unspecified */ \ 977 if (strncmp(cp, f, strlen(f)) == 0) { \ 978 valptr = strchr(cp, '='); \ 979 if (valptr == NULL) \ 980 err(1, "syntax error in %s field", (f)); \ 981 errno = 0; \ 982 newval = strtoul(++valptr, NULL, 0); \ 983 if (errno) \ 984 err(1, "syntax error in %s's value", (f)); \ 985 v = newval; \ 986 } \ 987 } while (0) 988 989 #ifdef ND6_IFF_IFDISABLED 990 SETFLAG("disabled", ND6_IFF_IFDISABLED); 991 #endif 992 SETFLAG("nud", ND6_IFF_PERFORMNUD); 993 #ifdef ND6_IFF_ACCEPT_RTADV 994 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 995 #endif 996 #ifdef ND6_IFF_PREFER_SOURCE 997 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 998 #endif 999 #ifdef ND6_IFF_DONT_SET_IFROUTE 1000 SETFLAG("dont_set_ifroute", ND6_IFF_DONT_SET_IFROUTE); 1001 #endif 1002 SETVALUE("basereachable", ND.basereachable); 1003 SETVALUE("retrans", ND.retrans); 1004 SETVALUE("curhlim", ND.chlim); 1005 1006 ND.flags = newflags; 1007 #ifdef SIOCSIFINFO_IN6 1008 if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) { 1009 err(1, "ioctl(SIOCSIFINFO_IN6)"); 1010 /* NOTREACHED */ 1011 } 1012 #else 1013 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 1014 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 1015 /* NOTREACHED */ 1016 } 1017 #endif 1018 #undef SETFLAG 1019 #undef SETVALUE 1020 } 1021 1022 if (!ND.initialized) { 1023 errx(1, "%s: not initialized yet", ifname); 1024 /* NOTREACHED */ 1025 } 1026 1027 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 1028 err(1, "ioctl(SIOCGIFINFO_IN6)"); 1029 /* NOTREACHED */ 1030 } 1031 printf("linkmtu=%d", ND.linkmtu); 1032 printf(", maxmtu=%d", ND.maxmtu); 1033 printf(", curhlim=%d", ND.chlim); 1034 printf(", basereachable=%ds%dms", 1035 ND.basereachable / 1000, ND.basereachable % 1000); 1036 printf(", reachable=%ds", ND.reachable); 1037 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 1038 #ifdef IPV6CTL_USETEMPADDR 1039 memset(nullbuf, 0, sizeof(nullbuf)); 1040 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 1041 int j; 1042 u_int8_t *rbuf; 1043 1044 for (i = 0; i < 3; i++) { 1045 switch (i) { 1046 case 0: 1047 printf("\nRandom seed(0): "); 1048 rbuf = ND.randomseed0; 1049 break; 1050 case 1: 1051 printf("\nRandom seed(1): "); 1052 rbuf = ND.randomseed1; 1053 break; 1054 case 2: 1055 printf("\nRandom ID: "); 1056 rbuf = ND.randomid; 1057 break; 1058 default: 1059 errx(1, "impossible case for tempaddr display"); 1060 } 1061 for (j = 0; j < 8; j++) 1062 printf("%02x", rbuf[j]); 1063 } 1064 } 1065 #endif 1066 if (ND.flags) { 1067 printf("\nFlags: "); 1068 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1069 printf("nud "); 1070 #ifdef ND6_IFF_IFDISABLED 1071 if ((ND.flags & ND6_IFF_IFDISABLED)) 1072 printf("disabled "); 1073 #endif 1074 #ifdef ND6_IFF_ACCEPT_RTADV 1075 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1076 printf("accept_rtadv "); 1077 #endif 1078 #ifdef ND6_IFF_PREFER_SOURCE 1079 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1080 printf("prefer_source "); 1081 #endif 1082 } 1083 putc('\n', stdout); 1084 #undef ND 1085 1086 close(s); 1087 } 1088 1089 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1090 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1091 #endif 1092 1093 void 1094 rtrlist() 1095 { 1096 #ifdef ICMPV6CTL_ND6_DRLIST 1097 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1098 char *buf; 1099 struct in6_defrouter *p, *ep; 1100 size_t l; 1101 struct timeval time; 1102 1103 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1104 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1105 /*NOTREACHED*/ 1106 } 1107 if (l == 0) 1108 return; 1109 buf = malloc(l); 1110 if (!buf) { 1111 err(1, "malloc"); 1112 /*NOTREACHED*/ 1113 } 1114 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1115 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1116 /*NOTREACHED*/ 1117 } 1118 1119 ep = (struct in6_defrouter *)(buf + l); 1120 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1121 int rtpref; 1122 1123 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1124 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1125 (nflag ? NI_NUMERICHOST : 0)) != 0) 1126 strlcpy(host_buf, "?", sizeof(host_buf)); 1127 1128 printf("%s if=%s", host_buf, 1129 if_indextoname(p->if_index, ifix_buf)); 1130 printf(", flags=%s%s", 1131 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1132 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1133 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1134 printf(", pref=%s", rtpref_str[rtpref]); 1135 1136 gettimeofday(&time, 0); 1137 if (p->expire == 0) 1138 printf(", expire=Never\n"); 1139 else 1140 printf(", expire=%s\n", 1141 sec2str(p->expire - time.tv_sec)); 1142 } 1143 free(buf); 1144 #else 1145 struct in6_drlist dr; 1146 int s, i; 1147 struct timeval time; 1148 1149 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1150 err(1, "socket"); 1151 /* NOTREACHED */ 1152 } 1153 bzero(&dr, sizeof(dr)); 1154 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1155 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1156 err(1, "ioctl(SIOCGDRLST_IN6)"); 1157 /* NOTREACHED */ 1158 } 1159 #define DR dr.defrouter[i] 1160 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1161 struct sockaddr_in6 sin6; 1162 1163 bzero(&sin6, sizeof(sin6)); 1164 sin6.sin6_family = AF_INET6; 1165 sin6.sin6_len = sizeof(sin6); 1166 sin6.sin6_addr = DR.rtaddr; 1167 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1168 sizeof(host_buf), NULL, 0, 1169 (nflag ? NI_NUMERICHOST : 0)); 1170 1171 printf("%s if=%s", host_buf, 1172 if_indextoname(DR.if_index, ifix_buf)); 1173 printf(", flags=%s%s", 1174 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1175 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1176 gettimeofday(&time, 0); 1177 if (DR.expire == 0) 1178 printf(", expire=Never\n"); 1179 else 1180 printf(", expire=%s\n", 1181 sec2str(DR.expire - time.tv_sec)); 1182 } 1183 #undef DR 1184 close(s); 1185 #endif 1186 } 1187 1188 void 1189 plist() 1190 { 1191 #ifdef ICMPV6CTL_ND6_PRLIST 1192 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1193 char *buf; 1194 struct in6_prefix *p, *ep, *n; 1195 struct sockaddr_in6 *advrtr; 1196 size_t l; 1197 struct timeval time; 1198 const int niflags = NI_NUMERICHOST; 1199 int ninflags = nflag ? NI_NUMERICHOST : 0; 1200 char namebuf[NI_MAXHOST]; 1201 1202 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1203 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1204 /*NOTREACHED*/ 1205 } 1206 buf = malloc(l); 1207 if (!buf) { 1208 err(1, "malloc"); 1209 /*NOTREACHED*/ 1210 } 1211 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1212 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1213 /*NOTREACHED*/ 1214 } 1215 1216 ep = (struct in6_prefix *)(buf + l); 1217 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1218 advrtr = (struct sockaddr_in6 *)(p + 1); 1219 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1220 1221 if (getnameinfo((struct sockaddr *)&p->prefix, 1222 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1223 NULL, 0, niflags) != 0) 1224 strlcpy(namebuf, "?", sizeof(namebuf)); 1225 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1226 if_indextoname(p->if_index, ifix_buf)); 1227 1228 gettimeofday(&time, 0); 1229 /* 1230 * meaning of fields, especially flags, is very different 1231 * by origin. notify the difference to the users. 1232 */ 1233 printf("flags=%s%s%s%s%s", 1234 p->raflags.onlink ? "L" : "", 1235 p->raflags.autonomous ? "A" : "", 1236 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1237 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1238 #ifdef NDPRF_HOME 1239 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1240 #else 1241 "" 1242 #endif 1243 ); 1244 if (p->vltime == ND6_INFINITE_LIFETIME) 1245 printf(" vltime=infinity"); 1246 else 1247 printf(" vltime=%lu", (unsigned long)p->vltime); 1248 if (p->pltime == ND6_INFINITE_LIFETIME) 1249 printf(", pltime=infinity"); 1250 else 1251 printf(", pltime=%lu", (unsigned long)p->pltime); 1252 if (p->expire == 0) 1253 printf(", expire=Never"); 1254 else if (p->expire >= time.tv_sec) 1255 printf(", expire=%s", 1256 sec2str(p->expire - time.tv_sec)); 1257 else 1258 printf(", expired"); 1259 printf(", ref=%d", p->refcnt); 1260 printf("\n"); 1261 /* 1262 * "advertising router" list is meaningful only if the prefix 1263 * information is from RA. 1264 */ 1265 if (p->advrtrs) { 1266 int j; 1267 struct sockaddr_in6 *sin6; 1268 1269 sin6 = advrtr; 1270 printf(" advertised by\n"); 1271 for (j = 0; j < p->advrtrs; j++) { 1272 struct in6_nbrinfo *nbi; 1273 1274 if (getnameinfo((struct sockaddr *)sin6, 1275 sin6->sin6_len, namebuf, sizeof(namebuf), 1276 NULL, 0, ninflags) != 0) 1277 strlcpy(namebuf, "?", sizeof(namebuf)); 1278 printf(" %s", namebuf); 1279 1280 nbi = getnbrinfo(&sin6->sin6_addr, 1281 p->if_index, 0); 1282 if (nbi) { 1283 switch (nbi->state) { 1284 case ND6_LLINFO_REACHABLE: 1285 case ND6_LLINFO_STALE: 1286 case ND6_LLINFO_DELAY: 1287 case ND6_LLINFO_PROBE: 1288 printf(" (reachable)\n"); 1289 break; 1290 default: 1291 printf(" (unreachable)\n"); 1292 } 1293 } else 1294 printf(" (no neighbor state)\n"); 1295 sin6++; 1296 } 1297 } else 1298 printf(" No advertising router\n"); 1299 } 1300 free(buf); 1301 #else 1302 struct in6_prlist pr; 1303 int s, i; 1304 struct timeval time; 1305 1306 gettimeofday(&time, 0); 1307 1308 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1309 err(1, "socket"); 1310 /* NOTREACHED */ 1311 } 1312 bzero(&pr, sizeof(pr)); 1313 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1314 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1315 err(1, "ioctl(SIOCGPRLST_IN6)"); 1316 /* NOTREACHED */ 1317 } 1318 #define PR pr.prefix[i] 1319 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1320 struct sockaddr_in6 p6; 1321 char namebuf[NI_MAXHOST]; 1322 int niflags; 1323 1324 #ifdef NDPRF_ONLINK 1325 p6 = PR.prefix; 1326 #else 1327 memset(&p6, 0, sizeof(p6)); 1328 p6.sin6_family = AF_INET6; 1329 p6.sin6_len = sizeof(p6); 1330 p6.sin6_addr = PR.prefix; 1331 #endif 1332 1333 niflags = NI_NUMERICHOST; 1334 if (getnameinfo((struct sockaddr *)&p6, 1335 sizeof(p6), namebuf, sizeof(namebuf), 1336 NULL, 0, niflags)) { 1337 warnx("getnameinfo failed"); 1338 continue; 1339 } 1340 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1341 if_indextoname(PR.if_index, ifix_buf)); 1342 1343 gettimeofday(&time, 0); 1344 /* 1345 * meaning of fields, especially flags, is very different 1346 * by origin. notify the difference to the users. 1347 */ 1348 #if 0 1349 printf(" %s", 1350 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1351 #endif 1352 #ifdef NDPRF_ONLINK 1353 printf("flags=%s%s%s%s%s", 1354 PR.raflags.onlink ? "L" : "", 1355 PR.raflags.autonomous ? "A" : "", 1356 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1357 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1358 #ifdef NDPRF_HOME 1359 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1360 #else 1361 "" 1362 #endif 1363 ); 1364 #else 1365 printf("flags=%s%s", 1366 PR.raflags.onlink ? "L" : "", 1367 PR.raflags.autonomous ? "A" : ""); 1368 #endif 1369 if (PR.vltime == ND6_INFINITE_LIFETIME) 1370 printf(" vltime=infinity"); 1371 else 1372 printf(" vltime=%lu", PR.vltime); 1373 if (PR.pltime == ND6_INFINITE_LIFETIME) 1374 printf(", pltime=infinity"); 1375 else 1376 printf(", pltime=%lu", PR.pltime); 1377 if (PR.expire == 0) 1378 printf(", expire=Never"); 1379 else if (PR.expire >= time.tv_sec) 1380 printf(", expire=%s", 1381 sec2str(PR.expire - time.tv_sec)); 1382 else 1383 printf(", expired"); 1384 #ifdef NDPRF_ONLINK 1385 printf(", ref=%d", PR.refcnt); 1386 #endif 1387 #if 0 1388 switch (PR.origin) { 1389 case PR_ORIG_RA: 1390 printf(", origin=RA"); 1391 break; 1392 case PR_ORIG_RR: 1393 printf(", origin=RR"); 1394 break; 1395 case PR_ORIG_STATIC: 1396 printf(", origin=static"); 1397 break; 1398 case PR_ORIG_KERNEL: 1399 printf(", origin=kernel"); 1400 break; 1401 default: 1402 printf(", origin=?"); 1403 break; 1404 } 1405 #endif 1406 printf("\n"); 1407 /* 1408 * "advertising router" list is meaningful only if the prefix 1409 * information is from RA. 1410 */ 1411 if (0 && /* prefix origin is almost obsolted */ 1412 PR.origin != PR_ORIG_RA) 1413 ; 1414 else if (PR.advrtrs) { 1415 int j; 1416 printf(" advertised by\n"); 1417 for (j = 0; j < PR.advrtrs; j++) { 1418 struct sockaddr_in6 sin6; 1419 struct in6_nbrinfo *nbi; 1420 1421 bzero(&sin6, sizeof(sin6)); 1422 sin6.sin6_family = AF_INET6; 1423 sin6.sin6_len = sizeof(sin6); 1424 sin6.sin6_addr = PR.advrtr[j]; 1425 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1426 getnameinfo((struct sockaddr *)&sin6, 1427 sin6.sin6_len, host_buf, 1428 sizeof(host_buf), NULL, 0, 1429 (nflag ? NI_NUMERICHOST : 0)); 1430 printf(" %s", host_buf); 1431 1432 nbi = getnbrinfo(&sin6.sin6_addr, 1433 PR.if_index, 0); 1434 if (nbi) { 1435 switch (nbi->state) { 1436 case ND6_LLINFO_REACHABLE: 1437 case ND6_LLINFO_STALE: 1438 case ND6_LLINFO_DELAY: 1439 case ND6_LLINFO_PROBE: 1440 printf(" (reachable)\n"); 1441 break; 1442 default: 1443 printf(" (unreachable)\n"); 1444 } 1445 } else 1446 printf(" (no neighbor state)\n"); 1447 } 1448 if (PR.advrtrs > DRLSTSIZ) 1449 printf(" and %d routers\n", 1450 PR.advrtrs - DRLSTSIZ); 1451 } else 1452 printf(" No advertising router\n"); 1453 } 1454 #undef PR 1455 close(s); 1456 #endif 1457 } 1458 1459 void 1460 pfx_flush() 1461 { 1462 char dummyif[IFNAMSIZ+8]; 1463 int s; 1464 1465 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1466 err(1, "socket"); 1467 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1468 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1469 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1470 close(s); 1471 } 1472 1473 void 1474 rtr_flush() 1475 { 1476 char dummyif[IFNAMSIZ+8]; 1477 int s; 1478 1479 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1480 err(1, "socket"); 1481 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1482 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1483 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1484 1485 close(s); 1486 } 1487 1488 void 1489 harmonize_rtr() 1490 { 1491 char dummyif[IFNAMSIZ+8]; 1492 int s; 1493 1494 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1495 err(1, "socket"); 1496 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1497 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1498 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1499 1500 close(s); 1501 } 1502 1503 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1504 static void 1505 setdefif(ifname) 1506 char *ifname; 1507 { 1508 struct in6_ndifreq ndifreq; 1509 unsigned int ifindex; 1510 1511 if (strcasecmp(ifname, "delete") == 0) 1512 ifindex = 0; 1513 else { 1514 if ((ifindex = if_nametoindex(ifname)) == 0) 1515 err(1, "failed to resolve i/f index for %s", ifname); 1516 } 1517 1518 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1519 err(1, "socket"); 1520 1521 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1522 ndifreq.ifindex = ifindex; 1523 1524 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1525 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1526 1527 close(s); 1528 } 1529 1530 static void 1531 getdefif() 1532 { 1533 struct in6_ndifreq ndifreq; 1534 char ifname[IFNAMSIZ+8]; 1535 1536 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1537 err(1, "socket"); 1538 1539 memset(&ndifreq, 0, sizeof(ndifreq)); 1540 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1541 1542 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1543 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1544 1545 if (ndifreq.ifindex == 0) 1546 printf("No default interface.\n"); 1547 else { 1548 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1549 err(1, "failed to resolve ifname for index %lu", 1550 ndifreq.ifindex); 1551 printf("ND default interface = %s\n", ifname); 1552 } 1553 1554 close(s); 1555 } 1556 #endif 1557 1558 static char * 1559 sec2str(total) 1560 time_t total; 1561 { 1562 static char result[256]; 1563 int days, hours, mins, secs; 1564 int first = 1; 1565 char *p = result; 1566 char *ep = &result[sizeof(result)]; 1567 int n; 1568 1569 days = total / 3600 / 24; 1570 hours = (total / 3600) % 24; 1571 mins = (total / 60) % 60; 1572 secs = total % 60; 1573 1574 if (days) { 1575 first = 0; 1576 n = snprintf(p, ep - p, "%dd", days); 1577 if (n < 0 || n >= ep - p) 1578 return "?"; 1579 p += n; 1580 } 1581 if (!first || hours) { 1582 first = 0; 1583 n = snprintf(p, ep - p, "%dh", hours); 1584 if (n < 0 || n >= ep - p) 1585 return "?"; 1586 p += n; 1587 } 1588 if (!first || mins) { 1589 first = 0; 1590 n = snprintf(p, ep - p, "%dm", mins); 1591 if (n < 0 || n >= ep - p) 1592 return "?"; 1593 p += n; 1594 } 1595 snprintf(p, ep - p, "%ds", secs); 1596 1597 return(result); 1598 } 1599 1600 /* 1601 * Print the timestamp 1602 * from tcpdump/util.c 1603 */ 1604 static void 1605 ts_print(tvp) 1606 const struct timeval *tvp; 1607 { 1608 int s; 1609 1610 /* Default */ 1611 s = (tvp->tv_sec + thiszone) % 86400; 1612 (void)printf("%02d:%02d:%02d.%06u ", 1613 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1614 } 1615
Indexes created Sat Sep 27 14:09:57 GMT 2025