ndp.c revision 1.30
1 /* $NetBSD: ndp.c,v 1.30 2004/01/08 06:56:25 itojun Exp $ */ 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. 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 sleep(repeat); 775 goto again; 776 } 777 } 778 779 static struct in6_nbrinfo * 780 getnbrinfo(addr, ifindex, warning) 781 struct in6_addr *addr; 782 int ifindex; 783 int warning; 784 { 785 static struct in6_nbrinfo nbi; 786 int s; 787 788 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 789 err(1, "socket"); 790 791 bzero(&nbi, sizeof(nbi)); 792 if_indextoname(ifindex, nbi.ifname); 793 nbi.addr = *addr; 794 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 795 if (warning) 796 warn("ioctl(SIOCGNBRINFO_IN6)"); 797 close(s); 798 return(NULL); 799 } 800 801 close(s); 802 return(&nbi); 803 } 804 805 static char * 806 ether_str(sdl) 807 struct sockaddr_dl *sdl; 808 { 809 static char hbuf[NI_MAXHOST]; 810 811 if (sdl->sdl_alen) { 812 if (getnameinfo((struct sockaddr *)sdl, sdl->sdl_len, 813 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) 814 snprintf(hbuf, sizeof(hbuf), "<invalid>"); 815 } else 816 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 817 818 return(hbuf); 819 } 820 821 int 822 ndp_ether_aton(a, n) 823 char *a; 824 u_char *n; 825 { 826 int i, o[6]; 827 828 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 829 &o[3], &o[4], &o[5]); 830 if (i != 6) { 831 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 832 return (1); 833 } 834 for (i = 0; i < 6; i++) 835 n[i] = o[i]; 836 return (0); 837 } 838 839 void 840 usage() 841 { 842 printf("usage: ndp [-nt] hostname\n"); 843 printf(" ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n"); 844 printf(" ndp [-nt] -A wait\n"); 845 printf(" ndp [-nt] -d hostname\n"); 846 printf(" ndp [-nt] -f filename\n"); 847 printf(" ndp [-nt] -i interface [flags...]\n"); 848 #ifdef SIOCSDEFIFACE_IN6 849 printf(" ndp [-nt] -I [interface|delete]\n"); 850 #endif 851 printf(" ndp [-nt] -s nodename etheraddr [temp] [proxy]\n"); 852 exit(1); 853 } 854 855 int 856 rtmsg(cmd) 857 int cmd; 858 { 859 static int seq; 860 int rlen; 861 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 862 register char *cp = m_rtmsg.m_space; 863 register int l; 864 865 errno = 0; 866 if (cmd == RTM_DELETE) 867 goto doit; 868 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 869 rtm->rtm_flags = flags; 870 rtm->rtm_version = RTM_VERSION; 871 872 switch (cmd) { 873 default: 874 fprintf(stderr, "ndp: internal wrong cmd\n"); 875 exit(1); 876 case RTM_ADD: 877 rtm->rtm_addrs |= RTA_GATEWAY; 878 if (expire_time) { 879 rtm->rtm_rmx.rmx_expire = expire_time; 880 rtm->rtm_inits = RTV_EXPIRE; 881 } 882 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 883 if (rtm->rtm_flags & RTF_ANNOUNCE) { 884 rtm->rtm_flags &= ~RTF_HOST; 885 rtm->rtm_addrs |= RTA_NETMASK; 886 } 887 /* FALLTHROUGH */ 888 case RTM_GET: 889 rtm->rtm_addrs |= RTA_DST; 890 } 891 #define NEXTADDR(w, s) \ 892 if (rtm->rtm_addrs & (w)) { \ 893 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 894 895 NEXTADDR(RTA_DST, sin_m); 896 NEXTADDR(RTA_GATEWAY, sdl_m); 897 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 898 NEXTADDR(RTA_NETMASK, so_mask); 899 900 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 901 doit: 902 l = rtm->rtm_msglen; 903 rtm->rtm_seq = ++seq; 904 rtm->rtm_type = cmd; 905 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 906 if (errno != ESRCH || cmd != RTM_DELETE) { 907 err(1, "writing to routing socket"); 908 /* NOTREACHED */ 909 } 910 } 911 do { 912 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 913 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 914 if (l < 0) 915 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 916 strerror(errno)); 917 return (0); 918 } 919 920 void 921 ifinfo(ifname, argc, argv) 922 char *ifname; 923 int argc; 924 char **argv; 925 { 926 struct in6_ndireq nd; 927 int i, s; 928 u_int32_t newflags; 929 #ifdef IPV6CTL_USETEMPADDR 930 u_int8_t nullbuf[8]; 931 #endif 932 933 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 934 err(1, "socket"); 935 /* NOTREACHED */ 936 } 937 bzero(&nd, sizeof(nd)); 938 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 939 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 940 err(1, "ioctl(SIOCGIFINFO_IN6)"); 941 /* NOTREACHED */ 942 } 943 #define ND nd.ndi 944 newflags = ND.flags; 945 for (i = 0; i < argc; i++) { 946 int clear = 0; 947 char *cp = argv[i]; 948 949 if (*cp == '-') { 950 clear = 1; 951 cp++; 952 } 953 954 #define SETFLAG(s, f) \ 955 do {\ 956 if (strcmp(cp, (s)) == 0) {\ 957 if (clear)\ 958 newflags &= ~(f);\ 959 else\ 960 newflags |= (f);\ 961 }\ 962 } while (0) 963 SETFLAG("nud", ND6_IFF_PERFORMNUD); 964 #ifdef ND6_IFF_ACCEPT_RTADV 965 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 966 #endif 967 #ifdef ND6_IFF_PREFER_SOURCE 968 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 969 #endif 970 971 ND.flags = newflags; 972 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 973 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 974 /* NOTREACHED */ 975 } 976 #undef SETFLAG 977 } 978 979 if (!ND.initialized) { 980 errx(1, "%s: not initialized yet", ifname); 981 /* NOTREACHED */ 982 } 983 984 printf("linkmtu=%d", ND.linkmtu); 985 printf(", curhlim=%d", ND.chlim); 986 printf(", basereachable=%ds%dms", 987 ND.basereachable / 1000, ND.basereachable % 1000); 988 printf(", reachable=%ds", ND.reachable); 989 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 990 #ifdef IPV6CTL_USETEMPADDR 991 memset(nullbuf, 0, sizeof(nullbuf)); 992 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 993 int j; 994 u_int8_t *rbuf; 995 996 for (i = 0; i < 3; i++) { 997 switch (i) { 998 case 0: 999 printf("\nRandom seed(0): "); 1000 rbuf = ND.randomseed0; 1001 break; 1002 case 1: 1003 printf("\nRandom seed(1): "); 1004 rbuf = ND.randomseed1; 1005 break; 1006 case 2: 1007 printf("\nRandom ID: "); 1008 rbuf = ND.randomid; 1009 break; 1010 } 1011 for (j = 0; j < 8; j++) 1012 printf("%02x", rbuf[j]); 1013 } 1014 } 1015 #endif 1016 if (ND.flags) { 1017 printf("\nFlags: "); 1018 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1019 printf("nud "); 1020 #ifdef ND6_IFF_ACCEPT_RTADV 1021 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1022 printf("accept_rtadv "); 1023 #endif 1024 #ifdef ND6_IFF_PREFER_SOURCE 1025 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1026 printf("prefer_source "); 1027 #endif 1028 } 1029 putc('\n', stdout); 1030 #undef ND 1031 1032 close(s); 1033 } 1034 1035 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1036 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1037 #endif 1038 1039 void 1040 rtrlist() 1041 { 1042 #ifdef ICMPV6CTL_ND6_DRLIST 1043 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1044 char *buf; 1045 struct in6_defrouter *p, *ep; 1046 size_t l; 1047 struct timeval time; 1048 1049 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1050 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1051 /*NOTREACHED*/ 1052 } 1053 buf = malloc(l); 1054 if (!buf) { 1055 err(1, "malloc"); 1056 /*NOTREACHED*/ 1057 } 1058 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1059 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1060 /*NOTREACHED*/ 1061 } 1062 1063 ep = (struct in6_defrouter *)(buf + l); 1064 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1065 int rtpref; 1066 1067 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1068 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1069 (nflag ? NI_NUMERICHOST : 0)) != 0) 1070 strlcpy(host_buf, "?", sizeof(host_buf)); 1071 1072 printf("%s if=%s", host_buf, 1073 if_indextoname(p->if_index, ifix_buf)); 1074 printf(", flags=%s%s", 1075 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1076 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1077 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1078 printf(", pref=%s", rtpref_str[rtpref]); 1079 1080 gettimeofday(&time, 0); 1081 if (p->expire == 0) 1082 printf(", expire=Never\n"); 1083 else 1084 printf(", expire=%s\n", 1085 sec2str(p->expire - time.tv_sec)); 1086 } 1087 free(buf); 1088 #else 1089 struct in6_drlist dr; 1090 int s, i; 1091 struct timeval time; 1092 1093 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1094 err(1, "socket"); 1095 /* NOTREACHED */ 1096 } 1097 bzero(&dr, sizeof(dr)); 1098 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1099 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1100 err(1, "ioctl(SIOCGDRLST_IN6)"); 1101 /* NOTREACHED */ 1102 } 1103 #define DR dr.defrouter[i] 1104 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1105 struct sockaddr_in6 sin6; 1106 1107 bzero(&sin6, sizeof(sin6)); 1108 sin6.sin6_family = AF_INET6; 1109 sin6.sin6_len = sizeof(sin6); 1110 sin6.sin6_addr = DR.rtaddr; 1111 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1112 sizeof(host_buf), NULL, 0, 1113 (nflag ? NI_NUMERICHOST : 0)); 1114 1115 printf("%s if=%s", host_buf, 1116 if_indextoname(DR.if_index, ifix_buf)); 1117 printf(", flags=%s%s", 1118 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1119 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1120 gettimeofday(&time, 0); 1121 if (DR.expire == 0) 1122 printf(", expire=Never\n"); 1123 else 1124 printf(", expire=%s\n", 1125 sec2str(DR.expire - time.tv_sec)); 1126 } 1127 #undef DR 1128 close(s); 1129 #endif 1130 } 1131 1132 void 1133 plist() 1134 { 1135 #ifdef ICMPV6CTL_ND6_PRLIST 1136 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1137 char *buf; 1138 struct in6_prefix *p, *ep, *n; 1139 struct sockaddr_in6 *advrtr; 1140 size_t l; 1141 struct timeval time; 1142 const int niflags = NI_NUMERICHOST; 1143 int ninflags = nflag ? NI_NUMERICHOST : 0; 1144 char namebuf[NI_MAXHOST]; 1145 1146 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1147 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1148 /*NOTREACHED*/ 1149 } 1150 buf = malloc(l); 1151 if (!buf) { 1152 err(1, "malloc"); 1153 /*NOTREACHED*/ 1154 } 1155 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1156 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1157 /*NOTREACHED*/ 1158 } 1159 1160 ep = (struct in6_prefix *)(buf + l); 1161 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1162 advrtr = (struct sockaddr_in6 *)(p + 1); 1163 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1164 1165 if (getnameinfo((struct sockaddr *)&p->prefix, 1166 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1167 NULL, 0, niflags) != 0) 1168 strlcpy(namebuf, "?", sizeof(namebuf)); 1169 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1170 if_indextoname(p->if_index, ifix_buf)); 1171 1172 gettimeofday(&time, 0); 1173 /* 1174 * meaning of fields, especially flags, is very different 1175 * by origin. notify the difference to the users. 1176 */ 1177 printf("flags=%s%s%s%s%s", 1178 p->raflags.onlink ? "L" : "", 1179 p->raflags.autonomous ? "A" : "", 1180 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1181 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1182 #ifdef NDPRF_HOME 1183 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1184 #else 1185 "" 1186 #endif 1187 ); 1188 if (p->vltime == ND6_INFINITE_LIFETIME) 1189 printf(" vltime=infinity"); 1190 else 1191 printf(" vltime=%lu", (unsigned long)p->vltime); 1192 if (p->pltime == ND6_INFINITE_LIFETIME) 1193 printf(", pltime=infinity"); 1194 else 1195 printf(", pltime=%lu", (unsigned long)p->pltime); 1196 if (p->expire == 0) 1197 printf(", expire=Never"); 1198 else if (p->expire >= time.tv_sec) 1199 printf(", expire=%s", 1200 sec2str(p->expire - time.tv_sec)); 1201 else 1202 printf(", expired"); 1203 printf(", ref=%d", p->refcnt); 1204 printf("\n"); 1205 /* 1206 * "advertising router" list is meaningful only if the prefix 1207 * information is from RA. 1208 */ 1209 if (p->advrtrs) { 1210 int j; 1211 struct sockaddr_in6 *sin6; 1212 1213 sin6 = advrtr; 1214 printf(" advertised by\n"); 1215 for (j = 0; j < p->advrtrs; j++) { 1216 struct in6_nbrinfo *nbi; 1217 1218 if (getnameinfo((struct sockaddr *)sin6, 1219 sin6->sin6_len, namebuf, sizeof(namebuf), 1220 NULL, 0, ninflags) != 0) 1221 strlcpy(namebuf, "?", sizeof(namebuf)); 1222 printf(" %s", namebuf); 1223 1224 nbi = getnbrinfo(&sin6->sin6_addr, 1225 p->if_index, 0); 1226 if (nbi) { 1227 switch (nbi->state) { 1228 case ND6_LLINFO_REACHABLE: 1229 case ND6_LLINFO_STALE: 1230 case ND6_LLINFO_DELAY: 1231 case ND6_LLINFO_PROBE: 1232 printf(" (reachable)\n"); 1233 break; 1234 default: 1235 printf(" (unreachable)\n"); 1236 } 1237 } else 1238 printf(" (no neighbor state)\n"); 1239 sin6++; 1240 } 1241 } else 1242 printf(" No advertising router\n"); 1243 } 1244 free(buf); 1245 #else 1246 struct in6_prlist pr; 1247 int s, i; 1248 struct timeval time; 1249 1250 gettimeofday(&time, 0); 1251 1252 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1253 err(1, "socket"); 1254 /* NOTREACHED */ 1255 } 1256 bzero(&pr, sizeof(pr)); 1257 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1258 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1259 err(1, "ioctl(SIOCGPRLST_IN6)"); 1260 /* NOTREACHED */ 1261 } 1262 #define PR pr.prefix[i] 1263 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1264 struct sockaddr_in6 p6; 1265 char namebuf[NI_MAXHOST]; 1266 int niflags; 1267 1268 #ifdef NDPRF_ONLINK 1269 p6 = PR.prefix; 1270 #else 1271 memset(&p6, 0, sizeof(p6)); 1272 p6.sin6_family = AF_INET6; 1273 p6.sin6_len = sizeof(p6); 1274 p6.sin6_addr = PR.prefix; 1275 #endif 1276 1277 /* 1278 * copy link index to sin6_scope_id field. 1279 * XXX: KAME specific. 1280 */ 1281 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1282 u_int16_t linkid; 1283 1284 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1285 sizeof(linkid)); 1286 linkid = ntohs(linkid); 1287 p6.sin6_scope_id = linkid; 1288 p6.sin6_addr.s6_addr[2] = 0; 1289 p6.sin6_addr.s6_addr[3] = 0; 1290 } 1291 1292 niflags = NI_NUMERICHOST; 1293 if (getnameinfo((struct sockaddr *)&p6, 1294 sizeof(p6), namebuf, sizeof(namebuf), 1295 NULL, 0, niflags)) { 1296 warnx("getnameinfo failed"); 1297 continue; 1298 } 1299 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1300 if_indextoname(PR.if_index, ifix_buf)); 1301 1302 gettimeofday(&time, 0); 1303 /* 1304 * meaning of fields, especially flags, is very different 1305 * by origin. notify the difference to the users. 1306 */ 1307 #if 0 1308 printf(" %s", 1309 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1310 #endif 1311 #ifdef NDPRF_ONLINK 1312 printf("flags=%s%s%s%s%s", 1313 PR.raflags.onlink ? "L" : "", 1314 PR.raflags.autonomous ? "A" : "", 1315 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1316 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1317 #ifdef NDPRF_HOME 1318 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1319 #else 1320 "" 1321 #endif 1322 ); 1323 #else 1324 printf("flags=%s%s", 1325 PR.raflags.onlink ? "L" : "", 1326 PR.raflags.autonomous ? "A" : ""); 1327 #endif 1328 if (PR.vltime == ND6_INFINITE_LIFETIME) 1329 printf(" vltime=infinity"); 1330 else 1331 printf(" vltime=%lu", PR.vltime); 1332 if (PR.pltime == ND6_INFINITE_LIFETIME) 1333 printf(", pltime=infinity"); 1334 else 1335 printf(", pltime=%lu", PR.pltime); 1336 if (PR.expire == 0) 1337 printf(", expire=Never"); 1338 else if (PR.expire >= time.tv_sec) 1339 printf(", expire=%s", 1340 sec2str(PR.expire - time.tv_sec)); 1341 else 1342 printf(", expired"); 1343 #ifdef NDPRF_ONLINK 1344 printf(", ref=%d", PR.refcnt); 1345 #endif 1346 #if 0 1347 switch (PR.origin) { 1348 case PR_ORIG_RA: 1349 printf(", origin=RA"); 1350 break; 1351 case PR_ORIG_RR: 1352 printf(", origin=RR"); 1353 break; 1354 case PR_ORIG_STATIC: 1355 printf(", origin=static"); 1356 break; 1357 case PR_ORIG_KERNEL: 1358 printf(", origin=kernel"); 1359 break; 1360 default: 1361 printf(", origin=?"); 1362 break; 1363 } 1364 #endif 1365 printf("\n"); 1366 /* 1367 * "advertising router" list is meaningful only if the prefix 1368 * information is from RA. 1369 */ 1370 if (0 && /* prefix origin is almost obsolted */ 1371 PR.origin != PR_ORIG_RA) 1372 ; 1373 else if (PR.advrtrs) { 1374 int j; 1375 printf(" advertised by\n"); 1376 for (j = 0; j < PR.advrtrs; j++) { 1377 struct sockaddr_in6 sin6; 1378 struct in6_nbrinfo *nbi; 1379 1380 bzero(&sin6, sizeof(sin6)); 1381 sin6.sin6_family = AF_INET6; 1382 sin6.sin6_len = sizeof(sin6); 1383 sin6.sin6_addr = PR.advrtr[j]; 1384 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1385 getnameinfo((struct sockaddr *)&sin6, 1386 sin6.sin6_len, host_buf, 1387 sizeof(host_buf), NULL, 0, 1388 (nflag ? NI_NUMERICHOST : 0)); 1389 printf(" %s", host_buf); 1390 1391 nbi = getnbrinfo(&sin6.sin6_addr, 1392 PR.if_index, 0); 1393 if (nbi) { 1394 switch (nbi->state) { 1395 case ND6_LLINFO_REACHABLE: 1396 case ND6_LLINFO_STALE: 1397 case ND6_LLINFO_DELAY: 1398 case ND6_LLINFO_PROBE: 1399 printf(" (reachable)\n"); 1400 break; 1401 default: 1402 printf(" (unreachable)\n"); 1403 } 1404 } else 1405 printf(" (no neighbor state)\n"); 1406 } 1407 if (PR.advrtrs > DRLSTSIZ) 1408 printf(" and %d routers\n", 1409 PR.advrtrs - DRLSTSIZ); 1410 } else 1411 printf(" No advertising router\n"); 1412 } 1413 #undef PR 1414 close(s); 1415 #endif 1416 } 1417 1418 void 1419 pfx_flush() 1420 { 1421 char dummyif[IFNAMSIZ+8]; 1422 int s; 1423 1424 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1425 err(1, "socket"); 1426 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1427 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1428 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1429 } 1430 1431 void 1432 rtr_flush() 1433 { 1434 char dummyif[IFNAMSIZ+8]; 1435 int s; 1436 1437 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1438 err(1, "socket"); 1439 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1440 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1441 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1442 1443 close(s); 1444 } 1445 1446 void 1447 harmonize_rtr() 1448 { 1449 char dummyif[IFNAMSIZ+8]; 1450 int s; 1451 1452 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1453 err(1, "socket"); 1454 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1455 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1456 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1457 1458 close(s); 1459 } 1460 1461 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1462 static void 1463 setdefif(ifname) 1464 char *ifname; 1465 { 1466 struct in6_ndifreq ndifreq; 1467 unsigned int ifindex; 1468 1469 if (strcasecmp(ifname, "delete") == 0) 1470 ifindex = 0; 1471 else { 1472 if ((ifindex = if_nametoindex(ifname)) == 0) 1473 err(1, "failed to resolve i/f index for %s", ifname); 1474 } 1475 1476 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1477 err(1, "socket"); 1478 1479 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1480 ndifreq.ifindex = ifindex; 1481 1482 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1483 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1484 1485 close(s); 1486 } 1487 1488 static void 1489 getdefif() 1490 { 1491 struct in6_ndifreq ndifreq; 1492 char ifname[IFNAMSIZ+8]; 1493 1494 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1495 err(1, "socket"); 1496 1497 memset(&ndifreq, 0, sizeof(ndifreq)); 1498 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1499 1500 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1501 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1502 1503 if (ndifreq.ifindex == 0) 1504 printf("No default interface.\n"); 1505 else { 1506 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1507 err(1, "failed to resolve ifname for index %lu", 1508 ndifreq.ifindex); 1509 printf("ND default interface = %s\n", ifname); 1510 } 1511 1512 close(s); 1513 } 1514 #endif 1515 1516 static char * 1517 sec2str(total) 1518 time_t total; 1519 { 1520 static char result[256]; 1521 int days, hours, mins, secs; 1522 int first = 1; 1523 char *p = result; 1524 char *ep = &result[sizeof(result)]; 1525 int n; 1526 1527 days = total / 3600 / 24; 1528 hours = (total / 3600) % 24; 1529 mins = (total / 60) % 60; 1530 secs = total % 60; 1531 1532 if (days) { 1533 first = 0; 1534 n = snprintf(p, ep - p, "%dd", days); 1535 if (n < 0 || n >= ep - p) 1536 return "?"; 1537 p += n; 1538 } 1539 if (!first || hours) { 1540 first = 0; 1541 n = snprintf(p, ep - p, "%dh", hours); 1542 if (n < 0 || n >= ep - p) 1543 return "?"; 1544 p += n; 1545 } 1546 if (!first || mins) { 1547 first = 0; 1548 n = snprintf(p, ep - p, "%dm", mins); 1549 if (n < 0 || n >= ep - p) 1550 return "?"; 1551 p += n; 1552 } 1553 snprintf(p, ep - p, "%ds", secs); 1554 1555 return(result); 1556 } 1557 1558 /* 1559 * Print the timestamp 1560 * from tcpdump/util.c 1561 */ 1562 static void 1563 ts_print(tvp) 1564 const struct timeval *tvp; 1565 { 1566 int s; 1567 1568 /* Default */ 1569 s = (tvp->tv_sec + thiszone) % 86400; 1570 (void)printf("%02d:%02d:%02d.%06u ", 1571 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1572 } 1573
Indexes created Fri Sep 26 20:09:58 GMT 2025