ndp.c revision 1.31
1 /* $NetBSD: ndp.c,v 1.31 2004/02/10 14:44:32 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 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 (rtm->rtm_flags & RTF_ANNOUNCE) { 885 rtm->rtm_flags &= ~RTF_HOST; 886 rtm->rtm_addrs |= RTA_NETMASK; 887 } 888 /* FALLTHROUGH */ 889 case RTM_GET: 890 rtm->rtm_addrs |= RTA_DST; 891 } 892 #define NEXTADDR(w, s) \ 893 if (rtm->rtm_addrs & (w)) { \ 894 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 895 896 NEXTADDR(RTA_DST, sin_m); 897 NEXTADDR(RTA_GATEWAY, sdl_m); 898 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 899 NEXTADDR(RTA_NETMASK, so_mask); 900 901 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 902 doit: 903 l = rtm->rtm_msglen; 904 rtm->rtm_seq = ++seq; 905 rtm->rtm_type = cmd; 906 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 907 if (errno != ESRCH || cmd != RTM_DELETE) { 908 err(1, "writing to routing socket"); 909 /* NOTREACHED */ 910 } 911 } 912 do { 913 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 914 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 915 if (l < 0) 916 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 917 strerror(errno)); 918 return (0); 919 } 920 921 void 922 ifinfo(ifname, argc, argv) 923 char *ifname; 924 int argc; 925 char **argv; 926 { 927 struct in6_ndireq nd; 928 int i, s; 929 u_int32_t newflags; 930 #ifdef IPV6CTL_USETEMPADDR 931 u_int8_t nullbuf[8]; 932 #endif 933 934 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 935 err(1, "socket"); 936 /* NOTREACHED */ 937 } 938 bzero(&nd, sizeof(nd)); 939 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 940 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 941 err(1, "ioctl(SIOCGIFINFO_IN6)"); 942 /* NOTREACHED */ 943 } 944 #define ND nd.ndi 945 newflags = ND.flags; 946 for (i = 0; i < argc; i++) { 947 int clear = 0; 948 char *cp = argv[i]; 949 950 if (*cp == '-') { 951 clear = 1; 952 cp++; 953 } 954 955 #define SETFLAG(s, f) \ 956 do {\ 957 if (strcmp(cp, (s)) == 0) {\ 958 if (clear)\ 959 newflags &= ~(f);\ 960 else\ 961 newflags |= (f);\ 962 }\ 963 } while (0) 964 SETFLAG("nud", ND6_IFF_PERFORMNUD); 965 #ifdef ND6_IFF_ACCEPT_RTADV 966 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 967 #endif 968 #ifdef ND6_IFF_PREFER_SOURCE 969 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 970 #endif 971 972 ND.flags = newflags; 973 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 974 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 975 /* NOTREACHED */ 976 } 977 #undef SETFLAG 978 } 979 980 if (!ND.initialized) { 981 errx(1, "%s: not initialized yet", ifname); 982 /* NOTREACHED */ 983 } 984 985 printf("linkmtu=%d", ND.linkmtu); 986 printf(", curhlim=%d", ND.chlim); 987 printf(", basereachable=%ds%dms", 988 ND.basereachable / 1000, ND.basereachable % 1000); 989 printf(", reachable=%ds", ND.reachable); 990 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 991 #ifdef IPV6CTL_USETEMPADDR 992 memset(nullbuf, 0, sizeof(nullbuf)); 993 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 994 int j; 995 u_int8_t *rbuf; 996 997 for (i = 0; i < 3; i++) { 998 switch (i) { 999 case 0: 1000 printf("\nRandom seed(0): "); 1001 rbuf = ND.randomseed0; 1002 break; 1003 case 1: 1004 printf("\nRandom seed(1): "); 1005 rbuf = ND.randomseed1; 1006 break; 1007 case 2: 1008 printf("\nRandom ID: "); 1009 rbuf = ND.randomid; 1010 break; 1011 } 1012 for (j = 0; j < 8; j++) 1013 printf("%02x", rbuf[j]); 1014 } 1015 } 1016 #endif 1017 if (ND.flags) { 1018 printf("\nFlags: "); 1019 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1020 printf("nud "); 1021 #ifdef ND6_IFF_ACCEPT_RTADV 1022 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1023 printf("accept_rtadv "); 1024 #endif 1025 #ifdef ND6_IFF_PREFER_SOURCE 1026 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1027 printf("prefer_source "); 1028 #endif 1029 } 1030 putc('\n', stdout); 1031 #undef ND 1032 1033 close(s); 1034 } 1035 1036 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1037 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1038 #endif 1039 1040 void 1041 rtrlist() 1042 { 1043 #ifdef ICMPV6CTL_ND6_DRLIST 1044 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1045 char *buf; 1046 struct in6_defrouter *p, *ep; 1047 size_t l; 1048 struct timeval time; 1049 1050 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1051 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1052 /*NOTREACHED*/ 1053 } 1054 buf = malloc(l); 1055 if (!buf) { 1056 err(1, "malloc"); 1057 /*NOTREACHED*/ 1058 } 1059 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1060 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1061 /*NOTREACHED*/ 1062 } 1063 1064 ep = (struct in6_defrouter *)(buf + l); 1065 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1066 int rtpref; 1067 1068 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1069 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1070 (nflag ? NI_NUMERICHOST : 0)) != 0) 1071 strlcpy(host_buf, "?", sizeof(host_buf)); 1072 1073 printf("%s if=%s", host_buf, 1074 if_indextoname(p->if_index, ifix_buf)); 1075 printf(", flags=%s%s", 1076 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1077 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1078 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1079 printf(", pref=%s", rtpref_str[rtpref]); 1080 1081 gettimeofday(&time, 0); 1082 if (p->expire == 0) 1083 printf(", expire=Never\n"); 1084 else 1085 printf(", expire=%s\n", 1086 sec2str(p->expire - time.tv_sec)); 1087 } 1088 free(buf); 1089 #else 1090 struct in6_drlist dr; 1091 int s, i; 1092 struct timeval time; 1093 1094 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1095 err(1, "socket"); 1096 /* NOTREACHED */ 1097 } 1098 bzero(&dr, sizeof(dr)); 1099 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1100 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1101 err(1, "ioctl(SIOCGDRLST_IN6)"); 1102 /* NOTREACHED */ 1103 } 1104 #define DR dr.defrouter[i] 1105 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1106 struct sockaddr_in6 sin6; 1107 1108 bzero(&sin6, sizeof(sin6)); 1109 sin6.sin6_family = AF_INET6; 1110 sin6.sin6_len = sizeof(sin6); 1111 sin6.sin6_addr = DR.rtaddr; 1112 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1113 sizeof(host_buf), NULL, 0, 1114 (nflag ? NI_NUMERICHOST : 0)); 1115 1116 printf("%s if=%s", host_buf, 1117 if_indextoname(DR.if_index, ifix_buf)); 1118 printf(", flags=%s%s", 1119 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1120 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1121 gettimeofday(&time, 0); 1122 if (DR.expire == 0) 1123 printf(", expire=Never\n"); 1124 else 1125 printf(", expire=%s\n", 1126 sec2str(DR.expire - time.tv_sec)); 1127 } 1128 #undef DR 1129 close(s); 1130 #endif 1131 } 1132 1133 void 1134 plist() 1135 { 1136 #ifdef ICMPV6CTL_ND6_PRLIST 1137 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1138 char *buf; 1139 struct in6_prefix *p, *ep, *n; 1140 struct sockaddr_in6 *advrtr; 1141 size_t l; 1142 struct timeval time; 1143 const int niflags = NI_NUMERICHOST; 1144 int ninflags = nflag ? NI_NUMERICHOST : 0; 1145 char namebuf[NI_MAXHOST]; 1146 1147 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1148 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1149 /*NOTREACHED*/ 1150 } 1151 buf = malloc(l); 1152 if (!buf) { 1153 err(1, "malloc"); 1154 /*NOTREACHED*/ 1155 } 1156 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1157 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1158 /*NOTREACHED*/ 1159 } 1160 1161 ep = (struct in6_prefix *)(buf + l); 1162 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1163 advrtr = (struct sockaddr_in6 *)(p + 1); 1164 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1165 1166 if (getnameinfo((struct sockaddr *)&p->prefix, 1167 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1168 NULL, 0, niflags) != 0) 1169 strlcpy(namebuf, "?", sizeof(namebuf)); 1170 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1171 if_indextoname(p->if_index, ifix_buf)); 1172 1173 gettimeofday(&time, 0); 1174 /* 1175 * meaning of fields, especially flags, is very different 1176 * by origin. notify the difference to the users. 1177 */ 1178 printf("flags=%s%s%s%s%s", 1179 p->raflags.onlink ? "L" : "", 1180 p->raflags.autonomous ? "A" : "", 1181 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1182 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1183 #ifdef NDPRF_HOME 1184 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1185 #else 1186 "" 1187 #endif 1188 ); 1189 if (p->vltime == ND6_INFINITE_LIFETIME) 1190 printf(" vltime=infinity"); 1191 else 1192 printf(" vltime=%lu", (unsigned long)p->vltime); 1193 if (p->pltime == ND6_INFINITE_LIFETIME) 1194 printf(", pltime=infinity"); 1195 else 1196 printf(", pltime=%lu", (unsigned long)p->pltime); 1197 if (p->expire == 0) 1198 printf(", expire=Never"); 1199 else if (p->expire >= time.tv_sec) 1200 printf(", expire=%s", 1201 sec2str(p->expire - time.tv_sec)); 1202 else 1203 printf(", expired"); 1204 printf(", ref=%d", p->refcnt); 1205 printf("\n"); 1206 /* 1207 * "advertising router" list is meaningful only if the prefix 1208 * information is from RA. 1209 */ 1210 if (p->advrtrs) { 1211 int j; 1212 struct sockaddr_in6 *sin6; 1213 1214 sin6 = advrtr; 1215 printf(" advertised by\n"); 1216 for (j = 0; j < p->advrtrs; j++) { 1217 struct in6_nbrinfo *nbi; 1218 1219 if (getnameinfo((struct sockaddr *)sin6, 1220 sin6->sin6_len, namebuf, sizeof(namebuf), 1221 NULL, 0, ninflags) != 0) 1222 strlcpy(namebuf, "?", sizeof(namebuf)); 1223 printf(" %s", namebuf); 1224 1225 nbi = getnbrinfo(&sin6->sin6_addr, 1226 p->if_index, 0); 1227 if (nbi) { 1228 switch (nbi->state) { 1229 case ND6_LLINFO_REACHABLE: 1230 case ND6_LLINFO_STALE: 1231 case ND6_LLINFO_DELAY: 1232 case ND6_LLINFO_PROBE: 1233 printf(" (reachable)\n"); 1234 break; 1235 default: 1236 printf(" (unreachable)\n"); 1237 } 1238 } else 1239 printf(" (no neighbor state)\n"); 1240 sin6++; 1241 } 1242 } else 1243 printf(" No advertising router\n"); 1244 } 1245 free(buf); 1246 #else 1247 struct in6_prlist pr; 1248 int s, i; 1249 struct timeval time; 1250 1251 gettimeofday(&time, 0); 1252 1253 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1254 err(1, "socket"); 1255 /* NOTREACHED */ 1256 } 1257 bzero(&pr, sizeof(pr)); 1258 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1259 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1260 err(1, "ioctl(SIOCGPRLST_IN6)"); 1261 /* NOTREACHED */ 1262 } 1263 #define PR pr.prefix[i] 1264 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1265 struct sockaddr_in6 p6; 1266 char namebuf[NI_MAXHOST]; 1267 int niflags; 1268 1269 #ifdef NDPRF_ONLINK 1270 p6 = PR.prefix; 1271 #else 1272 memset(&p6, 0, sizeof(p6)); 1273 p6.sin6_family = AF_INET6; 1274 p6.sin6_len = sizeof(p6); 1275 p6.sin6_addr = PR.prefix; 1276 #endif 1277 1278 /* 1279 * copy link index to sin6_scope_id field. 1280 * XXX: KAME specific. 1281 */ 1282 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1283 u_int16_t linkid; 1284 1285 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1286 sizeof(linkid)); 1287 linkid = ntohs(linkid); 1288 p6.sin6_scope_id = linkid; 1289 p6.sin6_addr.s6_addr[2] = 0; 1290 p6.sin6_addr.s6_addr[3] = 0; 1291 } 1292 1293 niflags = NI_NUMERICHOST; 1294 if (getnameinfo((struct sockaddr *)&p6, 1295 sizeof(p6), namebuf, sizeof(namebuf), 1296 NULL, 0, niflags)) { 1297 warnx("getnameinfo failed"); 1298 continue; 1299 } 1300 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1301 if_indextoname(PR.if_index, ifix_buf)); 1302 1303 gettimeofday(&time, 0); 1304 /* 1305 * meaning of fields, especially flags, is very different 1306 * by origin. notify the difference to the users. 1307 */ 1308 #if 0 1309 printf(" %s", 1310 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1311 #endif 1312 #ifdef NDPRF_ONLINK 1313 printf("flags=%s%s%s%s%s", 1314 PR.raflags.onlink ? "L" : "", 1315 PR.raflags.autonomous ? "A" : "", 1316 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1317 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1318 #ifdef NDPRF_HOME 1319 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1320 #else 1321 "" 1322 #endif 1323 ); 1324 #else 1325 printf("flags=%s%s", 1326 PR.raflags.onlink ? "L" : "", 1327 PR.raflags.autonomous ? "A" : ""); 1328 #endif 1329 if (PR.vltime == ND6_INFINITE_LIFETIME) 1330 printf(" vltime=infinity"); 1331 else 1332 printf(" vltime=%lu", PR.vltime); 1333 if (PR.pltime == ND6_INFINITE_LIFETIME) 1334 printf(", pltime=infinity"); 1335 else 1336 printf(", pltime=%lu", PR.pltime); 1337 if (PR.expire == 0) 1338 printf(", expire=Never"); 1339 else if (PR.expire >= time.tv_sec) 1340 printf(", expire=%s", 1341 sec2str(PR.expire - time.tv_sec)); 1342 else 1343 printf(", expired"); 1344 #ifdef NDPRF_ONLINK 1345 printf(", ref=%d", PR.refcnt); 1346 #endif 1347 #if 0 1348 switch (PR.origin) { 1349 case PR_ORIG_RA: 1350 printf(", origin=RA"); 1351 break; 1352 case PR_ORIG_RR: 1353 printf(", origin=RR"); 1354 break; 1355 case PR_ORIG_STATIC: 1356 printf(", origin=static"); 1357 break; 1358 case PR_ORIG_KERNEL: 1359 printf(", origin=kernel"); 1360 break; 1361 default: 1362 printf(", origin=?"); 1363 break; 1364 } 1365 #endif 1366 printf("\n"); 1367 /* 1368 * "advertising router" list is meaningful only if the prefix 1369 * information is from RA. 1370 */ 1371 if (0 && /* prefix origin is almost obsolted */ 1372 PR.origin != PR_ORIG_RA) 1373 ; 1374 else if (PR.advrtrs) { 1375 int j; 1376 printf(" advertised by\n"); 1377 for (j = 0; j < PR.advrtrs; j++) { 1378 struct sockaddr_in6 sin6; 1379 struct in6_nbrinfo *nbi; 1380 1381 bzero(&sin6, sizeof(sin6)); 1382 sin6.sin6_family = AF_INET6; 1383 sin6.sin6_len = sizeof(sin6); 1384 sin6.sin6_addr = PR.advrtr[j]; 1385 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1386 getnameinfo((struct sockaddr *)&sin6, 1387 sin6.sin6_len, host_buf, 1388 sizeof(host_buf), NULL, 0, 1389 (nflag ? NI_NUMERICHOST : 0)); 1390 printf(" %s", host_buf); 1391 1392 nbi = getnbrinfo(&sin6.sin6_addr, 1393 PR.if_index, 0); 1394 if (nbi) { 1395 switch (nbi->state) { 1396 case ND6_LLINFO_REACHABLE: 1397 case ND6_LLINFO_STALE: 1398 case ND6_LLINFO_DELAY: 1399 case ND6_LLINFO_PROBE: 1400 printf(" (reachable)\n"); 1401 break; 1402 default: 1403 printf(" (unreachable)\n"); 1404 } 1405 } else 1406 printf(" (no neighbor state)\n"); 1407 } 1408 if (PR.advrtrs > DRLSTSIZ) 1409 printf(" and %d routers\n", 1410 PR.advrtrs - DRLSTSIZ); 1411 } else 1412 printf(" No advertising router\n"); 1413 } 1414 #undef PR 1415 close(s); 1416 #endif 1417 } 1418 1419 void 1420 pfx_flush() 1421 { 1422 char dummyif[IFNAMSIZ+8]; 1423 int s; 1424 1425 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1426 err(1, "socket"); 1427 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1428 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1429 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1430 } 1431 1432 void 1433 rtr_flush() 1434 { 1435 char dummyif[IFNAMSIZ+8]; 1436 int s; 1437 1438 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1439 err(1, "socket"); 1440 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1441 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1442 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1443 1444 close(s); 1445 } 1446 1447 void 1448 harmonize_rtr() 1449 { 1450 char dummyif[IFNAMSIZ+8]; 1451 int s; 1452 1453 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1454 err(1, "socket"); 1455 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1456 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1457 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1458 1459 close(s); 1460 } 1461 1462 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1463 static void 1464 setdefif(ifname) 1465 char *ifname; 1466 { 1467 struct in6_ndifreq ndifreq; 1468 unsigned int ifindex; 1469 1470 if (strcasecmp(ifname, "delete") == 0) 1471 ifindex = 0; 1472 else { 1473 if ((ifindex = if_nametoindex(ifname)) == 0) 1474 err(1, "failed to resolve i/f index for %s", ifname); 1475 } 1476 1477 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1478 err(1, "socket"); 1479 1480 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1481 ndifreq.ifindex = ifindex; 1482 1483 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1484 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1485 1486 close(s); 1487 } 1488 1489 static void 1490 getdefif() 1491 { 1492 struct in6_ndifreq ndifreq; 1493 char ifname[IFNAMSIZ+8]; 1494 1495 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1496 err(1, "socket"); 1497 1498 memset(&ndifreq, 0, sizeof(ndifreq)); 1499 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1500 1501 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1502 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1503 1504 if (ndifreq.ifindex == 0) 1505 printf("No default interface.\n"); 1506 else { 1507 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1508 err(1, "failed to resolve ifname for index %lu", 1509 ndifreq.ifindex); 1510 printf("ND default interface = %s\n", ifname); 1511 } 1512 1513 close(s); 1514 } 1515 #endif 1516 1517 static char * 1518 sec2str(total) 1519 time_t total; 1520 { 1521 static char result[256]; 1522 int days, hours, mins, secs; 1523 int first = 1; 1524 char *p = result; 1525 char *ep = &result[sizeof(result)]; 1526 int n; 1527 1528 days = total / 3600 / 24; 1529 hours = (total / 3600) % 24; 1530 mins = (total / 60) % 60; 1531 secs = total % 60; 1532 1533 if (days) { 1534 first = 0; 1535 n = snprintf(p, ep - p, "%dd", days); 1536 if (n < 0 || n >= ep - p) 1537 return "?"; 1538 p += n; 1539 } 1540 if (!first || hours) { 1541 first = 0; 1542 n = snprintf(p, ep - p, "%dh", hours); 1543 if (n < 0 || n >= ep - p) 1544 return "?"; 1545 p += n; 1546 } 1547 if (!first || mins) { 1548 first = 0; 1549 n = snprintf(p, ep - p, "%dm", mins); 1550 if (n < 0 || n >= ep - p) 1551 return "?"; 1552 p += n; 1553 } 1554 snprintf(p, ep - p, "%ds", secs); 1555 1556 return(result); 1557 } 1558 1559 /* 1560 * Print the timestamp 1561 * from tcpdump/util.c 1562 */ 1563 static void 1564 ts_print(tvp) 1565 const struct timeval *tvp; 1566 { 1567 int s; 1568 1569 /* Default */ 1570 s = (tvp->tv_sec + thiszone) % 86400; 1571 (void)printf("%02d:%02d:%02d.%06u ", 1572 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1573 } 1574
Indexes created Sat Sep 27 22:09:54 GMT 2025