1 /* $OpenBSD: ndp.c,v 1.45 2009/06/25 15:44:43 claudio Exp $ */ 2 /* $KAME: ndp.c,v 1.101 2002/07/17 08:46:33 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 #include <sys/queue.h> 84 85 #include <net/if.h> 86 #include <net/if_dl.h> 87 #include <net/if_types.h> 88 #include <net/route.h> 89 90 #include <netinet/in.h> 91 92 #include <netinet/icmp6.h> 93 #include <netinet6/in6_var.h> 94 #include <netinet6/nd6.h> 95 96 #include <arpa/inet.h> 97 98 #include <stdio.h> 99 #include <errno.h> 100 #include <fcntl.h> 101 #include <netdb.h> 102 #include <paths.h> 103 #include <stdlib.h> 104 #include <string.h> 105 #include <unistd.h> 106 #include <err.h> 107 108 #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 file(char *); 127 void getsocket(void); 128 int set(int, char **); 129 void get(char *); 130 int delete(char *); 131 void dump(struct in6_addr *, int); 132 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *, int, int); 133 static char *ether_str(struct sockaddr_dl *); 134 int ndp_ether_aton(char *, u_char *); 135 void usage(void); 136 int rtmsg(int); 137 void ifinfo(char *, int, char **); 138 void rtrlist(void); 139 void plist(void); 140 void pfx_flush(void); 141 void rtrlist(void); 142 void rtr_flush(void); 143 void harmonize_rtr(void); 144 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 145 static void getdefif(void); 146 static void setdefif(char *); 147 #endif 148 static char *sec2str(time_t); 149 static char *ether_str(struct sockaddr_dl *); 150 static void ts_print(const struct timeval *); 151 152 #ifdef ICMPV6CTL_ND6_DRLIST 153 static char *rtpref_str[] = { 154 "medium", /* 00 */ 155 "high", /* 01 */ 156 "rsv", /* 10 */ 157 "low" /* 11 */ 158 }; 159 #endif 160 161 int mode = 0; 162 char *arg = NULL; 163 164 int 165 main(int argc, char *argv[]) 166 { 167 int ch; 168 169 pid = getpid(); 170 thiszone = gmt2local(0); 171 while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 172 switch (ch) { 173 case 'a': 174 case 'c': 175 case 'p': 176 case 'r': 177 case 'H': 178 case 'P': 179 case 'R': 180 case 's': 181 case 'I': 182 if (mode) { 183 usage(); 184 /*NOTREACHED*/ 185 } 186 mode = ch; 187 arg = NULL; 188 break; 189 case 'd': 190 case 'f': 191 case 'i' : 192 if (mode) { 193 usage(); 194 /*NOTREACHED*/ 195 } 196 mode = ch; 197 arg = optarg; 198 break; 199 case 'n': 200 nflag = 1; 201 break; 202 case 't': 203 tflag = 1; 204 break; 205 case 'A': 206 if (mode) { 207 usage(); 208 /*NOTREACHED*/ 209 } 210 mode = 'a'; 211 repeat = atoi(optarg); 212 if (repeat < 0) { 213 usage(); 214 /*NOTREACHED*/ 215 } 216 break; 217 default: 218 usage(); 219 } 220 221 argc -= optind; 222 argv += optind; 223 224 switch (mode) { 225 case 'a': 226 case 'c': 227 if (argc != 0) { 228 usage(); 229 /*NOTREACHED*/ 230 } 231 dump(0, mode == 'c'); 232 break; 233 case 'd': 234 if (argc != 0) { 235 usage(); 236 /*NOTREACHED*/ 237 } 238 delete(arg); 239 break; 240 case 'I': 241 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 242 if (argc > 1) { 243 usage(); 244 /*NOTREACHED*/ 245 } else if (argc == 1) { 246 if (strcmp(*argv, "delete") == 0 || 247 if_nametoindex(*argv)) 248 setdefif(*argv); 249 else 250 errx(1, "invalid interface %s", *argv); 251 } 252 getdefif(); /* always call it to print the result */ 253 break; 254 #else 255 errx(1, "not supported yet"); 256 /*NOTREACHED*/ 257 #endif 258 case 'p': 259 if (argc != 0) { 260 usage(); 261 /*NOTREACHED*/ 262 } 263 plist(); 264 break; 265 case 'i': 266 ifinfo(arg, argc, argv); 267 break; 268 case 'r': 269 if (argc != 0) { 270 usage(); 271 /*NOTREACHED*/ 272 } 273 rtrlist(); 274 break; 275 case 's': 276 if (argc < 2 || argc > 4) 277 usage(); 278 exit(set(argc, argv) ? 1 : 0); 279 case 'H': 280 if (argc != 0) { 281 usage(); 282 /*NOTREACHED*/ 283 } 284 harmonize_rtr(); 285 break; 286 case 'P': 287 if (argc != 0) { 288 usage(); 289 /*NOTREACHED*/ 290 } 291 pfx_flush(); 292 break; 293 case 'R': 294 if (argc != 0) { 295 usage(); 296 /*NOTREACHED*/ 297 } 298 rtr_flush(); 299 break; 300 case 0: 301 if (argc != 1) { 302 usage(); 303 /*NOTREACHED*/ 304 } 305 get(argv[0]); 306 break; 307 } 308 exit(0); 309 } 310 311 /* 312 * Process a file to set standard ndp entries 313 */ 314 int 315 file(char *name) 316 { 317 FILE *fp; 318 int i, retval; 319 char line[100], arg[5][50], *args[5]; 320 321 if ((fp = fopen(name, "r")) == NULL) { 322 fprintf(stderr, "ndp: cannot open %s\n", name); 323 exit(1); 324 } 325 args[0] = &arg[0][0]; 326 args[1] = &arg[1][0]; 327 args[2] = &arg[2][0]; 328 args[3] = &arg[3][0]; 329 args[4] = &arg[4][0]; 330 retval = 0; 331 while (fgets(line, sizeof(line), fp) != NULL) { 332 i = sscanf(line, "%49s %49s %49s %49s %49s", 333 arg[0], arg[1], arg[2], arg[3], arg[4]); 334 if (i < 2) { 335 fprintf(stderr, "ndp: bad line: %s\n", line); 336 retval = 1; 337 continue; 338 } 339 if (set(i, args)) 340 retval = 1; 341 } 342 fclose(fp); 343 return (retval); 344 } 345 346 void 347 getsocket(void) 348 { 349 if (s < 0) { 350 s = socket(PF_ROUTE, SOCK_RAW, 0); 351 if (s < 0) { 352 err(1, "socket"); 353 /* NOTREACHED */ 354 } 355 } 356 } 357 358 struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 359 struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 360 struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 361 int expire_time, flags, found_entry; 362 struct { 363 struct rt_msghdr m_rtm; 364 char m_space[512]; 365 } m_rtmsg; 366 367 /* 368 * Set an individual neighbor cache entry 369 */ 370 int 371 set(int argc, char **argv) 372 { 373 struct sockaddr_in6 *sin = &sin_m; 374 struct sockaddr_dl *sdl; 375 struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 376 struct addrinfo hints, *res; 377 int gai_error; 378 u_char *ea; 379 char *host = argv[0], *eaddr = argv[1]; 380 381 getsocket(); 382 argc -= 2; 383 argv += 2; 384 sdl_m = blank_sdl; 385 sin_m = blank_sin; 386 387 bzero(&hints, sizeof(hints)); 388 hints.ai_family = AF_INET6; 389 gai_error = getaddrinfo(host, NULL, &hints, &res); 390 if (gai_error) { 391 fprintf(stderr, "ndp: %s: %s\n", host, 392 gai_strerror(gai_error)); 393 return 1; 394 } 395 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 396 #ifdef __KAME__ 397 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 398 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 399 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 400 } 401 #endif 402 ea = (u_char *)LLADDR(&sdl_m); 403 if (ndp_ether_aton(eaddr, ea) == 0) 404 sdl_m.sdl_alen = 6; 405 flags = expire_time = 0; 406 while (argc-- > 0) { 407 if (strncmp(argv[0], "temp", 4) == 0) { 408 struct timeval time; 409 410 gettimeofday(&time, 0); 411 expire_time = time.tv_sec + 20 * 60; 412 } else if (strncmp(argv[0], "proxy", 5) == 0) 413 flags |= RTF_ANNOUNCE; 414 argv++; 415 } 416 if (rtmsg(RTM_GET) < 0) { 417 errx(1, "RTM_GET(%s) failed", host); 418 /* NOTREACHED */ 419 } 420 sin = (struct sockaddr_in6 *)((char *)rtm + rtm->rtm_hdrlen); 421 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 422 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 423 if (sdl->sdl_family == AF_LINK && 424 (rtm->rtm_flags & RTF_LLINFO) && 425 !(rtm->rtm_flags & RTF_GATEWAY)) { 426 switch (sdl->sdl_type) { 427 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 428 case IFT_ISO88024: case IFT_ISO88025: 429 goto overwrite; 430 } 431 } 432 /* 433 * IPv4 arp command retries with sin_other = SIN_PROXY here. 434 */ 435 fprintf(stderr, "set: cannot configure a new entry\n"); 436 return 1; 437 } 438 439 overwrite: 440 if (sdl->sdl_family != AF_LINK) { 441 printf("cannot intuit interface index and type for %s\n", host); 442 return (1); 443 } 444 sdl_m.sdl_type = sdl->sdl_type; 445 sdl_m.sdl_index = sdl->sdl_index; 446 return (rtmsg(RTM_ADD)); 447 } 448 449 /* 450 * Display an individual neighbor cache entry 451 */ 452 void 453 get(char *host) 454 { 455 struct sockaddr_in6 *sin = &sin_m; 456 struct addrinfo hints, *res; 457 int gai_error; 458 459 sin_m = blank_sin; 460 bzero(&hints, sizeof(hints)); 461 hints.ai_family = AF_INET6; 462 gai_error = getaddrinfo(host, NULL, &hints, &res); 463 if (gai_error) { 464 fprintf(stderr, "ndp: %s: %s\n", host, 465 gai_strerror(gai_error)); 466 return; 467 } 468 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 469 #ifdef __KAME__ 470 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 471 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 472 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 473 } 474 #endif 475 dump(&sin->sin6_addr, 0); 476 if (found_entry == 0) { 477 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 478 sizeof(host_buf), NULL ,0, 479 (nflag ? NI_NUMERICHOST : 0)); 480 printf("%s (%s) -- no entry\n", host, host_buf); 481 exit(1); 482 } 483 } 484 485 /* 486 * Delete a neighbor cache entry 487 */ 488 int 489 delete(char *host) 490 { 491 struct sockaddr_in6 *sin = &sin_m; 492 struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 493 struct sockaddr_dl *sdl; 494 struct addrinfo hints, *res; 495 int gai_error; 496 497 getsocket(); 498 sin_m = blank_sin; 499 500 bzero(&hints, sizeof(hints)); 501 hints.ai_family = AF_INET6; 502 gai_error = getaddrinfo(host, NULL, &hints, &res); 503 if (gai_error) { 504 fprintf(stderr, "ndp: %s: %s\n", host, 505 gai_strerror(gai_error)); 506 return 1; 507 } 508 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 509 #ifdef __KAME__ 510 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 511 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 512 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 513 } 514 #endif 515 if (rtmsg(RTM_GET) < 0) { 516 errx(1, "RTM_GET(%s) failed", host); 517 /* NOTREACHED */ 518 } 519 sin = (struct sockaddr_in6 *)((char *)rtm + rtm->rtm_hdrlen); 520 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 521 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 522 if (sdl->sdl_family == AF_LINK && 523 (rtm->rtm_flags & RTF_LLINFO) && 524 !(rtm->rtm_flags & RTF_GATEWAY)) { 525 goto delete; 526 } 527 /* 528 * IPv4 arp command retries with sin_other = SIN_PROXY here. 529 */ 530 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 531 return 1; 532 } 533 534 delete: 535 if (sdl->sdl_family != AF_LINK) { 536 printf("cannot locate %s\n", host); 537 return (1); 538 } 539 if (rtmsg(RTM_DELETE) == 0) { 540 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 541 542 #ifdef __KAME__ 543 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 544 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 545 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 546 } 547 #endif 548 getnameinfo((struct sockaddr *)&s6, 549 s6.sin6_len, host_buf, 550 sizeof(host_buf), NULL, 0, 551 (nflag ? NI_NUMERICHOST : 0)); 552 printf("%s (%s) deleted\n", host, host_buf); 553 } 554 555 return 0; 556 } 557 558 #define W_ADDR 36 559 #define W_LL 17 560 #define W_IF 6 561 562 /* 563 * Dump the entire neighbor cache 564 */ 565 void 566 dump(struct in6_addr *addr, int cflag) 567 { 568 int mib[6]; 569 size_t needed; 570 char *lim, *buf, *next; 571 struct rt_msghdr *rtm; 572 struct sockaddr_in6 *sin; 573 struct sockaddr_dl *sdl; 574 struct in6_nbrinfo *nbi; 575 struct timeval time; 576 int addrwidth; 577 int llwidth; 578 int ifwidth; 579 char flgbuf[8]; 580 char *ifname; 581 582 /* Print header */ 583 if (!tflag && !cflag) 584 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 585 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 586 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 587 588 again:; 589 mib[0] = CTL_NET; 590 mib[1] = PF_ROUTE; 591 mib[2] = 0; 592 mib[3] = AF_INET6; 593 mib[4] = NET_RT_FLAGS; 594 mib[5] = RTF_LLINFO; 595 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 596 err(1, "sysctl(PF_ROUTE estimate)"); 597 if (needed > 0) { 598 if ((buf = malloc(needed)) == NULL) 599 err(1, "malloc"); 600 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 601 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 602 lim = buf + needed; 603 } else 604 buf = lim = NULL; 605 606 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 607 int isrouter = 0, prbs = 0; 608 609 rtm = (struct rt_msghdr *)next; 610 if (rtm->rtm_version != RTM_VERSION) 611 continue; 612 sin = (struct sockaddr_in6 *)(next + rtm->rtm_hdrlen); 613 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 614 615 /* 616 * Some OSes can produce a route that has the LINK flag but 617 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 618 * and BSD/OS, where xx is not the interface identifier on 619 * lo0). Such routes entry would annoy getnbrinfo() below, 620 * so we skip them. 621 * XXX: such routes should have the GATEWAY flag, not the 622 * LINK flag. However, there is rotten routing software 623 * that advertises all routes that have the GATEWAY flag. 624 * Thus, KAME kernel intentionally does not set the LINK flag. 625 * What is to be fixed is not ndp, but such routing software 626 * (and the kernel workaround)... 627 */ 628 if (sdl->sdl_family != AF_LINK) 629 continue; 630 631 if (!(rtm->rtm_flags & RTF_HOST)) 632 continue; 633 634 if (addr) { 635 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 636 continue; 637 found_entry = 1; 638 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 639 continue; 640 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 641 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 642 /* XXX: should scope id be filled in the kernel? */ 643 if (sin->sin6_scope_id == 0) 644 sin->sin6_scope_id = sdl->sdl_index; 645 #ifdef __KAME__ 646 /* KAME specific hack; removed the embedded id */ 647 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 648 #endif 649 } 650 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 651 sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0)); 652 if (cflag) { 653 #ifdef RTF_WASCLONED 654 if (rtm->rtm_flags & RTF_WASCLONED) 655 delete(host_buf); 656 #elif defined(RTF_CLONED) 657 if (rtm->rtm_flags & RTF_CLONED) 658 delete(host_buf); 659 #else 660 delete(host_buf); 661 #endif 662 continue; 663 } 664 gettimeofday(&time, 0); 665 if (tflag) 666 ts_print(&time); 667 668 addrwidth = strlen(host_buf); 669 if (addrwidth < W_ADDR) 670 addrwidth = W_ADDR; 671 llwidth = strlen(ether_str(sdl)); 672 if (W_ADDR + W_LL - addrwidth > llwidth) 673 llwidth = W_ADDR + W_LL - addrwidth; 674 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 675 if (!ifname) 676 ifname = "?"; 677 ifwidth = strlen(ifname); 678 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 679 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 680 681 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 682 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 683 684 /* Print neighbor discovery specific informations */ 685 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 686 if (nbi) { 687 if (nbi->expire > time.tv_sec) { 688 printf(" %-9.9s", 689 sec2str(nbi->expire - time.tv_sec)); 690 } else if (nbi->expire == 0) 691 printf(" %-9.9s", "permanent"); 692 else 693 printf(" %-9.9s", "expired"); 694 695 switch (nbi->state) { 696 case ND6_LLINFO_NOSTATE: 697 printf(" N"); 698 break; 699 #ifdef ND6_LLINFO_WAITDELETE 700 case ND6_LLINFO_WAITDELETE: 701 printf(" W"); 702 break; 703 #endif 704 case ND6_LLINFO_INCOMPLETE: 705 printf(" I"); 706 break; 707 case ND6_LLINFO_REACHABLE: 708 printf(" R"); 709 break; 710 case ND6_LLINFO_STALE: 711 printf(" S"); 712 break; 713 case ND6_LLINFO_DELAY: 714 printf(" D"); 715 break; 716 case ND6_LLINFO_PROBE: 717 printf(" P"); 718 break; 719 default: 720 printf(" ?"); 721 break; 722 } 723 724 isrouter = nbi->isrouter; 725 prbs = nbi->asked; 726 } else { 727 warnx("failed to get neighbor information"); 728 printf(" "); 729 } 730 731 /* 732 * other flags. R: router, P: proxy, W: ?? 733 */ 734 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 735 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 736 isrouter ? "R" : "", 737 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 738 } else { 739 sin = (struct sockaddr_in6 *) 740 (sdl->sdl_len + (char *)sdl); 741 #if 0 /* W and P are mystery even for us */ 742 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 743 isrouter ? "R" : "", 744 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 745 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 746 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 747 #else 748 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 749 isrouter ? "R" : "", 750 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 751 #endif 752 } 753 printf(" %s", flgbuf); 754 755 if (prbs) 756 printf(" %d", prbs); 757 758 printf("\n"); 759 } 760 if (buf != NULL) 761 free(buf); 762 763 if (repeat) { 764 printf("\n"); 765 fflush(stdout); 766 sleep(repeat); 767 goto again; 768 } 769 } 770 771 static struct in6_nbrinfo * 772 getnbrinfo(struct in6_addr *addr, int ifindex, int warning) 773 { 774 static struct in6_nbrinfo nbi; 775 int s; 776 777 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 778 err(1, "socket"); 779 780 bzero(&nbi, sizeof(nbi)); 781 if_indextoname(ifindex, nbi.ifname); 782 nbi.addr = *addr; 783 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 784 if (warning) 785 warn("ioctl(SIOCGNBRINFO_IN6)"); 786 close(s); 787 return(NULL); 788 } 789 790 close(s); 791 return(&nbi); 792 } 793 794 static char * 795 ether_str(struct sockaddr_dl *sdl) 796 { 797 static char hbuf[NI_MAXHOST]; 798 u_char *cp; 799 800 if (sdl->sdl_alen) { 801 cp = (u_char *)LLADDR(sdl); 802 snprintf(hbuf, sizeof(hbuf), "%x:%x:%x:%x:%x:%x", 803 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 804 } else 805 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 806 807 return(hbuf); 808 } 809 810 int 811 ndp_ether_aton(char *a, u_char *n) 812 { 813 int i, o[6]; 814 815 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 816 &o[3], &o[4], &o[5]); 817 if (i != 6) { 818 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 819 return (1); 820 } 821 for (i = 0; i < 6; i++) 822 n[i] = o[i]; 823 return (0); 824 } 825 826 void 827 usage(void) 828 { 829 printf("usage: ndp [-nrt] [-a | -c | -p] [-H | -P | -R] "); 830 printf("[-A wait] [-d hostname]\n"); 831 printf("\t[-f filename] "); 832 #ifdef SIOCSDEFIFACE_IN6 833 printf("[-I [interface | delete]] "); 834 #endif 835 printf("[-i interface [flag ...]]\n"); 836 printf("\t[-s nodename etheraddr [temp] [proxy]] [hostname]\n"); 837 exit(1); 838 } 839 840 int 841 rtmsg(int cmd) 842 { 843 static int seq; 844 int rlen; 845 struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 846 char *cp = m_rtmsg.m_space; 847 int l; 848 849 errno = 0; 850 if (cmd == RTM_DELETE) 851 goto doit; 852 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 853 rtm->rtm_flags = flags; 854 rtm->rtm_version = RTM_VERSION; 855 856 switch (cmd) { 857 default: 858 fprintf(stderr, "ndp: internal wrong cmd\n"); 859 exit(1); 860 case RTM_ADD: 861 rtm->rtm_addrs |= RTA_GATEWAY; 862 if (expire_time) { 863 rtm->rtm_rmx.rmx_expire = expire_time; 864 rtm->rtm_inits = RTV_EXPIRE; 865 } 866 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 867 #if 0 /* we don't support ipv6addr/128 type proxying. */ 868 if (rtm->rtm_flags & RTF_ANNOUNCE) { 869 rtm->rtm_flags &= ~RTF_HOST; 870 rtm->rtm_addrs |= RTA_NETMASK; 871 } 872 #endif 873 /* FALLTHROUGH */ 874 case RTM_GET: 875 rtm->rtm_addrs |= RTA_DST; 876 } 877 #define NEXTADDR(w, s) \ 878 if (rtm->rtm_addrs & (w)) { \ 879 bcopy((char *)&s, cp, sizeof(s)); cp += ROUNDUP(sizeof(s));} 880 881 NEXTADDR(RTA_DST, sin_m); 882 NEXTADDR(RTA_GATEWAY, sdl_m); 883 #if 0 /* we don't support ipv6addr/128 type proxying. */ 884 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 885 NEXTADDR(RTA_NETMASK, so_mask); 886 #endif 887 888 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 889 doit: 890 l = rtm->rtm_msglen; 891 rtm->rtm_seq = ++seq; 892 rtm->rtm_type = cmd; 893 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 894 if (errno != ESRCH || cmd != RTM_DELETE) { 895 err(1, "writing to routing socket"); 896 /* NOTREACHED */ 897 } 898 } 899 do { 900 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 901 } while (l > 0 && (rtm->rtm_version != RTM_VERSION || 902 rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 903 if (l < 0) 904 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 905 strerror(errno)); 906 return (0); 907 } 908 909 void 910 ifinfo(char *ifname, int argc, char **argv) 911 { 912 struct in6_ndireq nd; 913 int i, s; 914 u_int32_t newflags; 915 #ifdef IPV6CTL_USETEMPADDR 916 u_int8_t nullbuf[8]; 917 #endif 918 919 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 920 err(1, "socket"); 921 /* NOTREACHED */ 922 } 923 bzero(&nd, sizeof(nd)); 924 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 925 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 926 err(1, "ioctl(SIOCGIFINFO_IN6)"); 927 /* NOTREACHED */ 928 } 929 #define ND nd.ndi 930 newflags = ND.flags; 931 for (i = 0; i < argc; i++) { 932 int clear = 0; 933 char *cp = argv[i]; 934 935 if (*cp == '-') { 936 clear = 1; 937 cp++; 938 } 939 940 #define SETFLAG(s, f) \ 941 do {\ 942 if (strcmp(cp, (s)) == 0) {\ 943 if (clear)\ 944 newflags &= ~(f);\ 945 else\ 946 newflags |= (f);\ 947 }\ 948 } while (0) 949 SETFLAG("nud", ND6_IFF_PERFORMNUD); 950 #ifdef ND6_IFF_ACCEPT_RTADV 951 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 952 #endif 953 #ifdef ND6_IFF_PREFER_SOURCE 954 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 955 #endif 956 957 ND.flags = newflags; 958 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 959 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 960 /* NOTREACHED */ 961 } 962 #undef SETFLAG 963 } 964 965 if (!ND.initialized) { 966 errx(1, "%s: not initialized yet", ifname); 967 /* NOTREACHED */ 968 } 969 970 printf("linkmtu=%d", ND.linkmtu); 971 printf(", curhlim=%d", ND.chlim); 972 printf(", basereachable=%ds%dms", 973 ND.basereachable / 1000, ND.basereachable % 1000); 974 printf(", reachable=%ds", ND.reachable); 975 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 976 #ifdef IPV6CTL_USETEMPADDR 977 memset(nullbuf, 0, sizeof(nullbuf)); 978 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 979 int j; 980 u_int8_t *rbuf; 981 982 for (i = 0; i < 3; i++) { 983 switch (i) { 984 case 0: 985 printf("\nRandom seed(0): "); 986 rbuf = ND.randomseed0; 987 break; 988 case 1: 989 printf("\nRandom seed(1): "); 990 rbuf = ND.randomseed1; 991 break; 992 case 2: 993 printf("\nRandom ID: "); 994 rbuf = ND.randomid; 995 break; 996 } 997 for (j = 0; j < 8; j++) 998 printf("%02x", rbuf[j]); 999 } 1000 } 1001 #endif 1002 if (ND.flags) { 1003 printf("\nFlags: "); 1004 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1005 printf("nud "); 1006 #ifdef ND6_IFF_ACCEPT_RTADV 1007 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1008 printf("accept_rtadv "); 1009 #endif 1010 #ifdef ND6_IFF_PREFER_SOURCE 1011 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1012 printf("prefer_source "); 1013 #endif 1014 } 1015 putc('\n', stdout); 1016 #undef ND 1017 1018 close(s); 1019 } 1020 1021 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1022 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1023 #endif 1024 1025 void 1026 rtrlist(void) 1027 { 1028 #ifdef ICMPV6CTL_ND6_DRLIST 1029 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1030 char *buf; 1031 struct in6_defrouter *p, *ep; 1032 size_t l; 1033 struct timeval time; 1034 1035 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1036 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1037 /*NOTREACHED*/ 1038 } 1039 if (l == 0) 1040 return; 1041 buf = malloc(l); 1042 if (buf == NULL) { 1043 err(1, "malloc"); 1044 /*NOTREACHED*/ 1045 } 1046 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1047 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1048 /*NOTREACHED*/ 1049 } 1050 1051 ep = (struct in6_defrouter *)(buf + l); 1052 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1053 int rtpref; 1054 1055 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1056 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1057 (nflag ? NI_NUMERICHOST : 0)) != 0) 1058 strlcpy(host_buf, "?", sizeof(host_buf)); 1059 1060 printf("%s if=%s", host_buf, 1061 if_indextoname(p->if_index, ifix_buf)); 1062 printf(", flags=%s%s", 1063 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1064 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1065 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1066 printf(", pref=%s", rtpref_str[rtpref]); 1067 1068 gettimeofday(&time, 0); 1069 if (p->expire == 0) 1070 printf(", expire=Never\n"); 1071 else 1072 printf(", expire=%s\n", 1073 sec2str(p->expire - time.tv_sec)); 1074 } 1075 free(buf); 1076 #else 1077 struct in6_drlist dr; 1078 int s, i; 1079 struct timeval time; 1080 1081 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1082 err(1, "socket"); 1083 /* NOTREACHED */ 1084 } 1085 bzero(&dr, sizeof(dr)); 1086 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1087 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1088 err(1, "ioctl(SIOCGDRLST_IN6)"); 1089 /* NOTREACHED */ 1090 } 1091 #define DR dr.defrouter[i] 1092 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1093 struct sockaddr_in6 sin6; 1094 1095 bzero(&sin6, sizeof(sin6)); 1096 sin6.sin6_family = AF_INET6; 1097 sin6.sin6_len = sizeof(sin6); 1098 sin6.sin6_addr = DR.rtaddr; 1099 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1100 sizeof(host_buf), NULL, 0, 1101 (nflag ? NI_NUMERICHOST : 0)); 1102 1103 printf("%s if=%s", host_buf, 1104 if_indextoname(DR.if_index, ifix_buf)); 1105 printf(", flags=%s%s", 1106 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1107 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1108 gettimeofday(&time, 0); 1109 if (DR.expire == 0) 1110 printf(", expire=Never\n"); 1111 else 1112 printf(", expire=%s\n", 1113 sec2str(DR.expire - time.tv_sec)); 1114 } 1115 #undef DR 1116 close(s); 1117 #endif 1118 } 1119 1120 void 1121 plist(void) 1122 { 1123 #ifdef ICMPV6CTL_ND6_PRLIST 1124 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1125 char *buf; 1126 struct in6_prefix *p, *ep, *n; 1127 struct sockaddr_in6 *advrtr; 1128 size_t l; 1129 struct timeval time; 1130 const int niflags = NI_NUMERICHOST; 1131 int ninflags = nflag ? NI_NUMERICHOST : 0; 1132 char namebuf[NI_MAXHOST]; 1133 1134 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1135 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1136 /*NOTREACHED*/ 1137 } 1138 buf = malloc(l); 1139 if (buf == NULL) { 1140 err(1, "malloc"); 1141 /*NOTREACHED*/ 1142 } 1143 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1144 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1145 /*NOTREACHED*/ 1146 } 1147 1148 ep = (struct in6_prefix *)(buf + l); 1149 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1150 advrtr = (struct sockaddr_in6 *)(p + 1); 1151 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1152 1153 if (getnameinfo((struct sockaddr *)&p->prefix, 1154 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1155 NULL, 0, niflags) != 0) 1156 strlcpy(namebuf, "?", sizeof(namebuf)); 1157 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1158 if_indextoname(p->if_index, ifix_buf)); 1159 1160 gettimeofday(&time, 0); 1161 /* 1162 * meaning of fields, especially flags, is very different 1163 * by origin. notify the difference to the users. 1164 */ 1165 printf("flags=%s%s%s%s%s", 1166 p->raflags.onlink ? "L" : "", 1167 p->raflags.autonomous ? "A" : "", 1168 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1169 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1170 #ifdef NDPRF_HOME 1171 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1172 #else 1173 "" 1174 #endif 1175 ); 1176 if (p->vltime == ND6_INFINITE_LIFETIME) 1177 printf(" vltime=infinity"); 1178 else 1179 printf(" vltime=%lu", (unsigned long)p->vltime); 1180 if (p->pltime == ND6_INFINITE_LIFETIME) 1181 printf(", pltime=infinity"); 1182 else 1183 printf(", pltime=%lu", (unsigned long)p->pltime); 1184 if (p->expire == 0) 1185 printf(", expire=Never"); 1186 else if (p->expire >= time.tv_sec) 1187 printf(", expire=%s", 1188 sec2str(p->expire - time.tv_sec)); 1189 else 1190 printf(", expired"); 1191 printf(", ref=%d", p->refcnt); 1192 printf("\n"); 1193 /* 1194 * "advertising router" list is meaningful only if the prefix 1195 * information is from RA. 1196 */ 1197 if (p->advrtrs) { 1198 int j; 1199 struct sockaddr_in6 *sin6; 1200 1201 sin6 = advrtr; 1202 printf(" advertised by\n"); 1203 for (j = 0; j < p->advrtrs; j++) { 1204 struct in6_nbrinfo *nbi; 1205 1206 if (getnameinfo((struct sockaddr *)sin6, 1207 sin6->sin6_len, namebuf, sizeof(namebuf), 1208 NULL, 0, ninflags) != 0) 1209 strlcpy(namebuf, "?", sizeof(namebuf)); 1210 printf(" %s", namebuf); 1211 1212 nbi = getnbrinfo(&sin6->sin6_addr, 1213 p->if_index, 0); 1214 if (nbi) { 1215 switch (nbi->state) { 1216 case ND6_LLINFO_REACHABLE: 1217 case ND6_LLINFO_STALE: 1218 case ND6_LLINFO_DELAY: 1219 case ND6_LLINFO_PROBE: 1220 printf(" (reachable)\n"); 1221 break; 1222 default: 1223 printf(" (unreachable)\n"); 1224 } 1225 } else 1226 printf(" (no neighbor state)\n"); 1227 sin6++; 1228 } 1229 } else 1230 printf(" No advertising router\n"); 1231 } 1232 free(buf); 1233 #else 1234 struct in6_prlist pr; 1235 int s, i; 1236 struct timeval time; 1237 1238 gettimeofday(&time, 0); 1239 1240 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1241 err(1, "socket"); 1242 /* NOTREACHED */ 1243 } 1244 bzero(&pr, sizeof(pr)); 1245 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1246 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1247 err(1, "ioctl(SIOCGPRLST_IN6)"); 1248 /* NOTREACHED */ 1249 } 1250 #define PR pr.prefix[i] 1251 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1252 struct sockaddr_in6 p6; 1253 char namebuf[NI_MAXHOST]; 1254 int niflags; 1255 1256 #ifdef NDPRF_ONLINK 1257 p6 = PR.prefix; 1258 #else 1259 memset(&p6, 0, sizeof(p6)); 1260 p6.sin6_family = AF_INET6; 1261 p6.sin6_len = sizeof(p6); 1262 p6.sin6_addr = PR.prefix; 1263 #endif 1264 1265 /* 1266 * copy link index to sin6_scope_id field. 1267 * XXX: KAME specific. 1268 */ 1269 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1270 u_int16_t linkid; 1271 1272 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1273 sizeof(linkid)); 1274 linkid = ntohs(linkid); 1275 p6.sin6_scope_id = linkid; 1276 p6.sin6_addr.s6_addr[2] = 0; 1277 p6.sin6_addr.s6_addr[3] = 0; 1278 } 1279 1280 niflags = NI_NUMERICHOST; 1281 if (getnameinfo((struct sockaddr *)&p6, 1282 sizeof(p6), namebuf, sizeof(namebuf), 1283 NULL, 0, niflags)) { 1284 warnx("getnameinfo failed"); 1285 continue; 1286 } 1287 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1288 if_indextoname(PR.if_index, ifix_buf)); 1289 1290 gettimeofday(&time, 0); 1291 /* 1292 * meaning of fields, especially flags, is very different 1293 * by origin. notify the difference to the users. 1294 */ 1295 #if 0 1296 printf(" %s", 1297 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1298 #endif 1299 #ifdef NDPRF_ONLINK 1300 printf("flags=%s%s%s%s%s", 1301 PR.raflags.onlink ? "L" : "", 1302 PR.raflags.autonomous ? "A" : "", 1303 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1304 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1305 #ifdef NDPRF_HOME 1306 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1307 #else 1308 "" 1309 #endif 1310 ); 1311 #else 1312 printf("flags=%s%s", 1313 PR.raflags.onlink ? "L" : "", 1314 PR.raflags.autonomous ? "A" : ""); 1315 #endif 1316 if (PR.vltime == ND6_INFINITE_LIFETIME) 1317 printf(" vltime=infinity"); 1318 else 1319 printf(" vltime=%lu", PR.vltime); 1320 if (PR.pltime == ND6_INFINITE_LIFETIME) 1321 printf(", pltime=infinity"); 1322 else 1323 printf(", pltime=%lu", PR.pltime); 1324 if (PR.expire == 0) 1325 printf(", expire=Never"); 1326 else if (PR.expire >= time.tv_sec) 1327 printf(", expire=%s", 1328 sec2str(PR.expire - time.tv_sec)); 1329 else 1330 printf(", expired"); 1331 #ifdef NDPRF_ONLINK 1332 printf(", ref=%d", PR.refcnt); 1333 #endif 1334 #if 0 1335 switch (PR.origin) { 1336 case PR_ORIG_RA: 1337 printf(", origin=RA"); 1338 break; 1339 case PR_ORIG_RR: 1340 printf(", origin=RR"); 1341 break; 1342 case PR_ORIG_STATIC: 1343 printf(", origin=static"); 1344 break; 1345 case PR_ORIG_KERNEL: 1346 printf(", origin=kernel"); 1347 break; 1348 default: 1349 printf(", origin=?"); 1350 break; 1351 } 1352 #endif 1353 printf("\n"); 1354 /* 1355 * "advertising router" list is meaningful only if the prefix 1356 * information is from RA. 1357 */ 1358 if (0 && /* prefix origin is almost obsolted */ 1359 PR.origin != PR_ORIG_RA) 1360 ; 1361 else if (PR.advrtrs) { 1362 int j; 1363 printf(" advertised by\n"); 1364 for (j = 0; j < PR.advrtrs; j++) { 1365 struct sockaddr_in6 sin6; 1366 struct in6_nbrinfo *nbi; 1367 1368 bzero(&sin6, sizeof(sin6)); 1369 sin6.sin6_family = AF_INET6; 1370 sin6.sin6_len = sizeof(sin6); 1371 sin6.sin6_addr = PR.advrtr[j]; 1372 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1373 getnameinfo((struct sockaddr *)&sin6, 1374 sin6.sin6_len, host_buf, 1375 sizeof(host_buf), NULL, 0, 1376 (nflag ? NI_NUMERICHOST : 0)); 1377 printf(" %s", host_buf); 1378 1379 nbi = getnbrinfo(&sin6.sin6_addr, 1380 PR.if_index, 0); 1381 if (nbi) { 1382 switch (nbi->state) { 1383 case ND6_LLINFO_REACHABLE: 1384 case ND6_LLINFO_STALE: 1385 case ND6_LLINFO_DELAY: 1386 case ND6_LLINFO_PROBE: 1387 printf(" (reachable)\n"); 1388 break; 1389 default: 1390 printf(" (unreachable)\n"); 1391 } 1392 } else 1393 printf(" (no neighbor state)\n"); 1394 } 1395 if (PR.advrtrs > DRLSTSIZ) 1396 printf(" and %d routers\n", 1397 PR.advrtrs - DRLSTSIZ); 1398 } else 1399 printf(" No advertising router\n"); 1400 } 1401 #undef PR 1402 close(s); 1403 #endif 1404 } 1405 1406 void 1407 pfx_flush(void) 1408 { 1409 char dummyif[IFNAMSIZ+8]; 1410 int s; 1411 1412 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1413 err(1, "socket"); 1414 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1415 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1416 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1417 close(s); 1418 } 1419 1420 void 1421 rtr_flush(void) 1422 { 1423 char dummyif[IFNAMSIZ+8]; 1424 int s; 1425 1426 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1427 err(1, "socket"); 1428 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1429 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1430 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1431 1432 close(s); 1433 } 1434 1435 void 1436 harmonize_rtr(void) 1437 { 1438 char dummyif[IFNAMSIZ+8]; 1439 int s; 1440 1441 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1442 err(1, "socket"); 1443 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1444 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1445 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1446 1447 close(s); 1448 } 1449 1450 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1451 static void 1452 setdefif(char *ifname) 1453 { 1454 struct in6_ndifreq ndifreq; 1455 unsigned int ifindex; 1456 1457 if (strcasecmp(ifname, "delete") == 0) 1458 ifindex = 0; 1459 else { 1460 if ((ifindex = if_nametoindex(ifname)) == 0) 1461 err(1, "failed to resolve i/f index for %s", ifname); 1462 } 1463 1464 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1465 err(1, "socket"); 1466 1467 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1468 ndifreq.ifindex = ifindex; 1469 1470 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1471 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1472 1473 close(s); 1474 } 1475 1476 static void 1477 getdefif(void) 1478 { 1479 struct in6_ndifreq ndifreq; 1480 char ifname[IFNAMSIZ+8]; 1481 1482 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1483 err(1, "socket"); 1484 1485 memset(&ndifreq, 0, sizeof(ndifreq)); 1486 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1487 1488 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1489 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1490 1491 if (ndifreq.ifindex == 0) 1492 printf("No default interface.\n"); 1493 else { 1494 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1495 err(1, "failed to resolve ifname for index %lu", 1496 ndifreq.ifindex); 1497 printf("ND default interface = %s\n", ifname); 1498 } 1499 1500 close(s); 1501 } 1502 #endif 1503 1504 static char * 1505 sec2str(time_t total) 1506 { 1507 static char result[256]; 1508 int days, hours, mins, secs; 1509 int first = 1; 1510 char *p = result; 1511 char *ep = &result[sizeof(result)]; 1512 int n; 1513 1514 days = total / 3600 / 24; 1515 hours = (total / 3600) % 24; 1516 mins = (total / 60) % 60; 1517 secs = total % 60; 1518 1519 if (days) { 1520 first = 0; 1521 n = snprintf(p, ep - p, "%dd", days); 1522 if (n < 0 || n >= ep - p) 1523 return "?"; 1524 p += n; 1525 } 1526 if (!first || hours) { 1527 first = 0; 1528 n = snprintf(p, ep - p, "%dh", hours); 1529 if (n < 0 || n >= ep - p) 1530 return "?"; 1531 p += n; 1532 } 1533 if (!first || mins) { 1534 first = 0; 1535 n = snprintf(p, ep - p, "%dm", mins); 1536 if (n < 0 || n >= ep - p) 1537 return "?"; 1538 p += n; 1539 } 1540 snprintf(p, ep - p, "%ds", secs); 1541 1542 return(result); 1543 } 1544 1545 /* 1546 * Print the timestamp 1547 * from tcpdump/util.c 1548 */ 1549 static void 1550 ts_print(const struct timeval *tvp) 1551 { 1552 int s; 1553 1554 /* Default */ 1555 s = (tvp->tv_sec + thiszone) % 86400; 1556 (void)printf("%02d:%02d:%02d.%06u ", 1557 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1558 } 1559