1 /* $FreeBSD$ */ 2 /* $KAME: ndp.c,v 1.104 2003/06/27 07:48:39 itojun Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 /* 33 * Copyright (c) 1984, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Sun Microsystems, Inc. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 4. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 */ 63 64 /* 65 * Based on: 66 * "@(#) Copyright (c) 1984, 1993\n\ 67 * The Regents of the University of California. All rights reserved.\n"; 68 * 69 * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; 70 */ 71 72 /* 73 * ndp - display, set, delete and flush neighbor cache 74 */ 75 76 77 #include <sys/param.h> 78 #include <sys/file.h> 79 #include <sys/ioctl.h> 80 #include <sys/socket.h> 81 #include <sys/sysctl.h> 82 #include <sys/time.h> 83 #include <sys/queue.h> 84 85 #include <net/if.h> 86 #include <net/if_var.h> 87 #include <net/if_dl.h> 88 #include <net/if_types.h> 89 #include <net/route.h> 90 91 #include <netinet/in.h> 92 #include <netinet/if_ether.h> 93 94 #include <netinet/icmp6.h> 95 #include <netinet6/in6_var.h> 96 #include <netinet6/nd6.h> 97 98 #include <arpa/inet.h> 99 100 #include <netdb.h> 101 #include <errno.h> 102 #include <nlist.h> 103 #include <stdio.h> 104 #include <string.h> 105 #include <paths.h> 106 #include <err.h> 107 #include <stdlib.h> 108 #include <fcntl.h> 109 #include <unistd.h> 110 #include "gmt2local.h" 111 112 /* packing rule for routing socket */ 113 #define ROUNDUP(a) \ 114 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 115 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 116 117 #define NEXTADDR(w, s) \ 118 if (rtm->rtm_addrs & (w)) { \ 119 bcopy((char *)&s, cp, sizeof(s)); cp += SA_SIZE(&s);} 120 121 122 static pid_t pid; 123 static int nflag; 124 static int tflag; 125 static int32_t thiszone; /* time difference with gmt */ 126 static int s = -1; 127 static int repeat = 0; 128 129 char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 130 char host_buf[NI_MAXHOST]; /* getnameinfo() */ 131 char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 132 133 int main(int, char **); 134 int file(char *); 135 void getsocket(void); 136 int set(int, char **); 137 void get(char *); 138 int delete(char *); 139 void dump(struct in6_addr *, int); 140 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *, int, int); 141 static char *ether_str(struct sockaddr_dl *); 142 int ndp_ether_aton(char *, u_char *); 143 void usage(void); 144 int rtmsg(int); 145 void ifinfo(char *, int, char **); 146 void rtrlist(void); 147 void plist(void); 148 void pfx_flush(void); 149 void rtr_flush(void); 150 void harmonize_rtr(void); 151 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 152 static void getdefif(void); 153 static void setdefif(char *); 154 #endif 155 static char *sec2str(time_t); 156 static void ts_print(const struct timeval *); 157 158 #ifdef ICMPV6CTL_ND6_DRLIST 159 static char *rtpref_str[] = { 160 "medium", /* 00 */ 161 "high", /* 01 */ 162 "rsv", /* 10 */ 163 "low" /* 11 */ 164 }; 165 #endif 166 167 int mode = 0; 168 char *arg = NULL; 169 170 int 171 main(argc, argv) 172 int argc; 173 char **argv; 174 { 175 int ch; 176 177 pid = getpid(); 178 thiszone = gmt2local(0); 179 while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 180 switch (ch) { 181 case 'a': 182 case 'c': 183 case 'p': 184 case 'r': 185 case 'H': 186 case 'P': 187 case 'R': 188 case 's': 189 case 'I': 190 if (mode) { 191 usage(); 192 /*NOTREACHED*/ 193 } 194 mode = ch; 195 arg = NULL; 196 break; 197 case 'd': 198 case 'f': 199 case 'i' : 200 if (mode) { 201 usage(); 202 /*NOTREACHED*/ 203 } 204 mode = ch; 205 arg = optarg; 206 break; 207 case 'n': 208 nflag = 1; 209 break; 210 case 't': 211 tflag = 1; 212 break; 213 case 'A': 214 if (mode) { 215 usage(); 216 /*NOTREACHED*/ 217 } 218 mode = 'a'; 219 repeat = atoi(optarg); 220 if (repeat < 0) { 221 usage(); 222 /*NOTREACHED*/ 223 } 224 break; 225 default: 226 usage(); 227 } 228 229 argc -= optind; 230 argv += optind; 231 232 switch (mode) { 233 case 'a': 234 case 'c': 235 if (argc != 0) { 236 usage(); 237 /*NOTREACHED*/ 238 } 239 dump(0, mode == 'c'); 240 break; 241 case 'd': 242 if (argc != 0) { 243 usage(); 244 /*NOTREACHED*/ 245 } 246 delete(arg); 247 break; 248 case 'I': 249 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 250 if (argc > 1) { 251 usage(); 252 /*NOTREACHED*/ 253 } else if (argc == 1) { 254 if (strcmp(*argv, "delete") == 0 || 255 if_nametoindex(*argv)) 256 setdefif(*argv); 257 else 258 errx(1, "invalid interface %s", *argv); 259 } 260 getdefif(); /* always call it to print the result */ 261 break; 262 #else 263 errx(1, "not supported yet"); 264 /*NOTREACHED*/ 265 #endif 266 case 'p': 267 if (argc != 0) { 268 usage(); 269 /*NOTREACHED*/ 270 } 271 plist(); 272 break; 273 case 'i': 274 ifinfo(arg, argc, argv); 275 break; 276 case 'r': 277 if (argc != 0) { 278 usage(); 279 /*NOTREACHED*/ 280 } 281 rtrlist(); 282 break; 283 case 's': 284 if (argc < 2 || argc > 4) 285 usage(); 286 exit(set(argc, argv) ? 1 : 0); 287 case 'H': 288 if (argc != 0) { 289 usage(); 290 /*NOTREACHED*/ 291 } 292 harmonize_rtr(); 293 break; 294 case 'P': 295 if (argc != 0) { 296 usage(); 297 /*NOTREACHED*/ 298 } 299 pfx_flush(); 300 break; 301 case 'R': 302 if (argc != 0) { 303 usage(); 304 /*NOTREACHED*/ 305 } 306 rtr_flush(); 307 break; 308 case 0: 309 if (argc != 1) { 310 usage(); 311 /*NOTREACHED*/ 312 } 313 get(argv[0]); 314 break; 315 } 316 exit(0); 317 } 318 319 /* 320 * Process a file to set standard ndp entries 321 */ 322 int 323 file(name) 324 char *name; 325 { 326 FILE *fp; 327 int i, retval; 328 char line[100], arg[5][50], *args[5]; 329 330 if ((fp = fopen(name, "r")) == NULL) { 331 fprintf(stderr, "ndp: cannot open %s\n", name); 332 exit(1); 333 } 334 args[0] = &arg[0][0]; 335 args[1] = &arg[1][0]; 336 args[2] = &arg[2][0]; 337 args[3] = &arg[3][0]; 338 args[4] = &arg[4][0]; 339 retval = 0; 340 while (fgets(line, sizeof(line), fp) != NULL) { 341 i = sscanf(line, "%49s %49s %49s %49s %49s", 342 arg[0], arg[1], arg[2], arg[3], arg[4]); 343 if (i < 2) { 344 fprintf(stderr, "ndp: bad line: %s\n", line); 345 retval = 1; 346 continue; 347 } 348 if (set(i, args)) 349 retval = 1; 350 } 351 fclose(fp); 352 return (retval); 353 } 354 355 void 356 getsocket() 357 { 358 if (s < 0) { 359 s = socket(PF_ROUTE, SOCK_RAW, 0); 360 if (s < 0) { 361 err(1, "socket"); 362 /* NOTREACHED */ 363 } 364 } 365 } 366 367 struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 368 struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 369 struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 370 int expire_time, flags, found_entry; 371 struct { 372 struct rt_msghdr m_rtm; 373 char m_space[512]; 374 } m_rtmsg; 375 376 /* 377 * Set an individual neighbor cache entry 378 */ 379 int 380 set(argc, argv) 381 int argc; 382 char **argv; 383 { 384 register struct sockaddr_in6 *sin = &sin_m; 385 register struct sockaddr_dl *sdl; 386 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 387 struct addrinfo hints, *res; 388 int gai_error; 389 u_char *ea; 390 char *host = argv[0], *eaddr = argv[1]; 391 392 getsocket(); 393 argc -= 2; 394 argv += 2; 395 sdl_m = blank_sdl; 396 sin_m = blank_sin; 397 398 bzero(&hints, sizeof(hints)); 399 hints.ai_family = AF_INET6; 400 gai_error = getaddrinfo(host, NULL, &hints, &res); 401 if (gai_error) { 402 fprintf(stderr, "ndp: %s: %s\n", host, 403 gai_strerror(gai_error)); 404 return 1; 405 } 406 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 407 #ifdef __KAME__ 408 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 409 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 410 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 411 } 412 #endif 413 ea = (u_char *)LLADDR(&sdl_m); 414 if (ndp_ether_aton(eaddr, ea) == 0) 415 sdl_m.sdl_alen = 6; 416 flags = expire_time = 0; 417 while (argc-- > 0) { 418 if (strncmp(argv[0], "temp", 4) == 0) { 419 struct timeval time; 420 421 gettimeofday(&time, 0); 422 expire_time = time.tv_sec + 20 * 60; 423 } else if (strncmp(argv[0], "proxy", 5) == 0) 424 flags |= RTF_ANNOUNCE; 425 argv++; 426 } 427 if (rtmsg(RTM_GET) < 0) { 428 errx(1, "RTM_GET(%s) failed", host); 429 /* NOTREACHED */ 430 } 431 sin = (struct sockaddr_in6 *)(rtm + 1); 432 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 433 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 434 if (sdl->sdl_family == AF_LINK && 435 !(rtm->rtm_flags & RTF_GATEWAY)) { 436 switch (sdl->sdl_type) { 437 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 438 case IFT_ISO88024: case IFT_ISO88025: 439 case IFT_L2VLAN: case IFT_BRIDGE: 440 goto overwrite; 441 } 442 } 443 /* 444 * IPv4 arp command retries with sin_other = SIN_PROXY here. 445 */ 446 fprintf(stderr, "set: cannot configure a new entry\n"); 447 return 1; 448 } 449 450 overwrite: 451 if (sdl->sdl_family != AF_LINK) { 452 printf("cannot intuit interface index and type for %s\n", host); 453 return (1); 454 } 455 sdl_m.sdl_type = sdl->sdl_type; 456 sdl_m.sdl_index = sdl->sdl_index; 457 return (rtmsg(RTM_ADD)); 458 } 459 460 /* 461 * Display an individual neighbor cache entry 462 */ 463 void 464 get(host) 465 char *host; 466 { 467 struct sockaddr_in6 *sin = &sin_m; 468 struct addrinfo hints, *res; 469 int gai_error; 470 471 sin_m = blank_sin; 472 bzero(&hints, sizeof(hints)); 473 hints.ai_family = AF_INET6; 474 gai_error = getaddrinfo(host, NULL, &hints, &res); 475 if (gai_error) { 476 fprintf(stderr, "ndp: %s: %s\n", host, 477 gai_strerror(gai_error)); 478 return; 479 } 480 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 481 #ifdef __KAME__ 482 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 483 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 484 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 485 } 486 #endif 487 dump(&sin->sin6_addr, 0); 488 if (found_entry == 0) { 489 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 490 sizeof(host_buf), NULL ,0, 491 (nflag ? NI_NUMERICHOST : 0)); 492 printf("%s (%s) -- no entry\n", host, host_buf); 493 exit(1); 494 } 495 } 496 497 /* 498 * Delete a neighbor cache entry 499 */ 500 int 501 delete(host) 502 char *host; 503 { 504 struct sockaddr_in6 *sin = &sin_m; 505 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 506 register char *cp = m_rtmsg.m_space; 507 struct sockaddr_dl *sdl; 508 struct addrinfo hints, *res; 509 int gai_error; 510 511 getsocket(); 512 sin_m = blank_sin; 513 514 bzero(&hints, sizeof(hints)); 515 hints.ai_family = AF_INET6; 516 gai_error = getaddrinfo(host, NULL, &hints, &res); 517 if (gai_error) { 518 fprintf(stderr, "ndp: %s: %s\n", host, 519 gai_strerror(gai_error)); 520 return 1; 521 } 522 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 523 #ifdef __KAME__ 524 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 525 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 526 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 527 } 528 #endif 529 if (rtmsg(RTM_GET) < 0) { 530 errx(1, "RTM_GET(%s) failed", host); 531 /* NOTREACHED */ 532 } 533 sin = (struct sockaddr_in6 *)(rtm + 1); 534 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 535 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 536 if (sdl->sdl_family == AF_LINK && 537 !(rtm->rtm_flags & RTF_GATEWAY)) { 538 goto delete; 539 } 540 /* 541 * IPv4 arp command retries with sin_other = SIN_PROXY here. 542 */ 543 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 544 return 1; 545 } 546 547 delete: 548 if (sdl->sdl_family != AF_LINK) { 549 printf("cannot locate %s\n", host); 550 return (1); 551 } 552 /* 553 * need to reinit the field because it has rt_key 554 * but we want the actual address 555 */ 556 NEXTADDR(RTA_DST, sin_m); 557 rtm->rtm_flags |= RTF_LLDATA; 558 if (rtmsg(RTM_DELETE) == 0) { 559 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 560 561 #ifdef __KAME__ 562 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 563 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 564 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 565 } 566 #endif 567 getnameinfo((struct sockaddr *)&s6, 568 s6.sin6_len, host_buf, 569 sizeof(host_buf), NULL, 0, 570 (nflag ? NI_NUMERICHOST : 0)); 571 printf("%s (%s) deleted\n", host, host_buf); 572 } 573 574 return 0; 575 } 576 577 #define W_ADDR 36 578 #define W_LL 17 579 #define W_IF 6 580 581 /* 582 * Dump the entire neighbor cache 583 */ 584 void 585 dump(addr, cflag) 586 struct in6_addr *addr; 587 int cflag; 588 { 589 int mib[6]; 590 size_t needed; 591 char *lim, *buf, *next; 592 struct rt_msghdr *rtm; 593 struct sockaddr_in6 *sin; 594 struct sockaddr_dl *sdl; 595 extern int h_errno; 596 struct in6_nbrinfo *nbi; 597 struct timeval time; 598 int addrwidth; 599 int llwidth; 600 int ifwidth; 601 char flgbuf[8]; 602 char *ifname; 603 604 /* Print header */ 605 if (!tflag && !cflag) 606 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 607 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 608 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 609 610 again:; 611 mib[0] = CTL_NET; 612 mib[1] = PF_ROUTE; 613 mib[2] = 0; 614 mib[3] = AF_INET6; 615 mib[4] = NET_RT_FLAGS; 616 #ifdef RTF_LLINFO 617 mib[5] = RTF_LLINFO; 618 #else 619 mib[5] = 0; 620 #endif 621 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 622 err(1, "sysctl(PF_ROUTE estimate)"); 623 if (needed > 0) { 624 if ((buf = malloc(needed)) == NULL) 625 err(1, "malloc"); 626 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 627 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 628 lim = buf + needed; 629 } else 630 buf = lim = NULL; 631 632 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 633 int isrouter = 0, prbs = 0; 634 635 rtm = (struct rt_msghdr *)next; 636 sin = (struct sockaddr_in6 *)(rtm + 1); 637 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 638 639 /* 640 * Some OSes can produce a route that has the LINK flag but 641 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 642 * and BSD/OS, where xx is not the interface identifier on 643 * lo0). Such routes entry would annoy getnbrinfo() below, 644 * so we skip them. 645 * XXX: such routes should have the GATEWAY flag, not the 646 * LINK flag. However, there is rotten routing software 647 * that advertises all routes that have the GATEWAY flag. 648 * Thus, KAME kernel intentionally does not set the LINK flag. 649 * What is to be fixed is not ndp, but such routing software 650 * (and the kernel workaround)... 651 */ 652 if (sdl->sdl_family != AF_LINK) 653 continue; 654 655 if (!(rtm->rtm_flags & RTF_HOST)) 656 continue; 657 658 if (addr) { 659 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 660 continue; 661 found_entry = 1; 662 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 663 continue; 664 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 665 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 666 /* XXX: should scope id be filled in the kernel? */ 667 if (sin->sin6_scope_id == 0) 668 sin->sin6_scope_id = sdl->sdl_index; 669 #ifdef __KAME__ 670 /* KAME specific hack; removed the embedded id */ 671 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 672 #endif 673 } 674 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 675 sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0)); 676 if (cflag) { 677 #ifdef RTF_WASCLONED 678 if (rtm->rtm_flags & RTF_WASCLONED) 679 delete(host_buf); 680 #elif defined(RTF_CLONED) 681 if (rtm->rtm_flags & RTF_CLONED) 682 delete(host_buf); 683 #else 684 delete(host_buf); 685 #endif 686 continue; 687 } 688 gettimeofday(&time, 0); 689 if (tflag) 690 ts_print(&time); 691 692 addrwidth = strlen(host_buf); 693 if (addrwidth < W_ADDR) 694 addrwidth = W_ADDR; 695 llwidth = strlen(ether_str(sdl)); 696 if (W_ADDR + W_LL - addrwidth > llwidth) 697 llwidth = W_ADDR + W_LL - addrwidth; 698 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 699 if (!ifname) 700 ifname = "?"; 701 ifwidth = strlen(ifname); 702 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 703 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 704 705 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 706 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 707 708 /* Print neighbor discovery specific informations */ 709 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 710 if (nbi) { 711 if (nbi->expire > time.tv_sec) { 712 printf(" %-9.9s", 713 sec2str(nbi->expire - time.tv_sec)); 714 } else if (nbi->expire == 0) 715 printf(" %-9.9s", "permanent"); 716 else 717 printf(" %-9.9s", "expired"); 718 719 switch (nbi->state) { 720 case ND6_LLINFO_NOSTATE: 721 printf(" N"); 722 break; 723 #ifdef ND6_LLINFO_WAITDELETE 724 case ND6_LLINFO_WAITDELETE: 725 printf(" W"); 726 break; 727 #endif 728 case ND6_LLINFO_INCOMPLETE: 729 printf(" I"); 730 break; 731 case ND6_LLINFO_REACHABLE: 732 printf(" R"); 733 break; 734 case ND6_LLINFO_STALE: 735 printf(" S"); 736 break; 737 case ND6_LLINFO_DELAY: 738 printf(" D"); 739 break; 740 case ND6_LLINFO_PROBE: 741 printf(" P"); 742 break; 743 default: 744 printf(" ?"); 745 break; 746 } 747 748 isrouter = nbi->isrouter; 749 prbs = nbi->asked; 750 } else { 751 warnx("failed to get neighbor information"); 752 printf(" "); 753 } 754 755 /* 756 * other flags. R: router, P: proxy, W: ?? 757 */ 758 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 759 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 760 isrouter ? "R" : "", 761 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 762 } else { 763 sin = (struct sockaddr_in6 *) 764 (sdl->sdl_len + (char *)sdl); 765 #if 0 /* W and P are mystery even for us */ 766 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 767 isrouter ? "R" : "", 768 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 769 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 770 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 771 #else 772 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 773 isrouter ? "R" : "", 774 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 775 #endif 776 } 777 printf(" %s", flgbuf); 778 779 if (prbs) 780 printf(" %d", prbs); 781 782 printf("\n"); 783 } 784 if (buf != NULL) 785 free(buf); 786 787 if (repeat) { 788 printf("\n"); 789 fflush(stdout); 790 sleep(repeat); 791 goto again; 792 } 793 } 794 795 static struct in6_nbrinfo * 796 getnbrinfo(addr, ifindex, warning) 797 struct in6_addr *addr; 798 int ifindex; 799 int warning; 800 { 801 static struct in6_nbrinfo nbi; 802 int s; 803 804 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 805 err(1, "socket"); 806 807 bzero(&nbi, sizeof(nbi)); 808 if_indextoname(ifindex, nbi.ifname); 809 nbi.addr = *addr; 810 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 811 if (warning) 812 warn("ioctl(SIOCGNBRINFO_IN6)"); 813 close(s); 814 return(NULL); 815 } 816 817 close(s); 818 return(&nbi); 819 } 820 821 static char * 822 ether_str(struct sockaddr_dl *sdl) 823 { 824 static char hbuf[NI_MAXHOST]; 825 char *cp; 826 827 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 828 strlcpy(hbuf, ether_ntoa((struct ether_addr *)LLADDR(sdl)), 829 sizeof(hbuf)); 830 } else if (sdl->sdl_alen) { 831 int n = sdl->sdl_nlen > 0 ? sdl->sdl_nlen + 1 : 0; 832 snprintf(hbuf, sizeof(hbuf), "%s", link_ntoa(sdl) + n); 833 } else 834 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 835 836 return(hbuf); 837 } 838 839 int 840 ndp_ether_aton(a, n) 841 char *a; 842 u_char *n; 843 { 844 int i, o[6]; 845 846 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 847 &o[3], &o[4], &o[5]); 848 if (i != 6) { 849 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 850 return (1); 851 } 852 for (i = 0; i < 6; i++) 853 n[i] = o[i]; 854 return (0); 855 } 856 857 void 858 usage() 859 { 860 printf("usage: ndp [-nt] hostname\n"); 861 printf(" ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n"); 862 printf(" ndp [-nt] -A wait\n"); 863 printf(" ndp [-nt] -d hostname\n"); 864 printf(" ndp [-nt] -f filename\n"); 865 printf(" ndp [-nt] -i interface [flags...]\n"); 866 #ifdef SIOCSDEFIFACE_IN6 867 printf(" ndp [-nt] -I [interface|delete]\n"); 868 #endif 869 printf(" ndp [-nt] -s nodename etheraddr [temp] [proxy]\n"); 870 exit(1); 871 } 872 873 int 874 rtmsg(cmd) 875 int cmd; 876 { 877 static int seq; 878 int rlen; 879 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 880 register char *cp = m_rtmsg.m_space; 881 register int l; 882 883 errno = 0; 884 if (cmd == RTM_DELETE) 885 goto doit; 886 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 887 rtm->rtm_flags = flags; 888 rtm->rtm_version = RTM_VERSION; 889 890 switch (cmd) { 891 default: 892 fprintf(stderr, "ndp: internal wrong cmd\n"); 893 exit(1); 894 case RTM_ADD: 895 rtm->rtm_addrs |= RTA_GATEWAY; 896 if (expire_time) { 897 rtm->rtm_rmx.rmx_expire = expire_time; 898 rtm->rtm_inits = RTV_EXPIRE; 899 } 900 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA); 901 #if 0 /* we don't support ipv6addr/128 type proxying */ 902 if (rtm->rtm_flags & RTF_ANNOUNCE) { 903 rtm->rtm_flags &= ~RTF_HOST; 904 rtm->rtm_addrs |= RTA_NETMASK; 905 } 906 #endif 907 /* FALLTHROUGH */ 908 case RTM_GET: 909 rtm->rtm_addrs |= RTA_DST; 910 } 911 912 NEXTADDR(RTA_DST, sin_m); 913 NEXTADDR(RTA_GATEWAY, sdl_m); 914 #if 0 /* we don't support ipv6addr/128 type proxying */ 915 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 916 NEXTADDR(RTA_NETMASK, so_mask); 917 #endif 918 919 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 920 doit: 921 l = rtm->rtm_msglen; 922 rtm->rtm_seq = ++seq; 923 rtm->rtm_type = cmd; 924 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 925 if (errno != ESRCH || cmd != RTM_DELETE) { 926 err(1, "writing to routing socket"); 927 /* NOTREACHED */ 928 } 929 } 930 do { 931 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 932 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 933 if (l < 0) 934 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 935 strerror(errno)); 936 return (0); 937 } 938 939 void 940 ifinfo(ifname, argc, argv) 941 char *ifname; 942 int argc; 943 char **argv; 944 { 945 struct in6_ndireq nd; 946 int i, s; 947 u_int32_t newflags; 948 #ifdef IPV6CTL_USETEMPADDR 949 u_int8_t nullbuf[8]; 950 #endif 951 952 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 953 err(1, "socket"); 954 /* NOTREACHED */ 955 } 956 bzero(&nd, sizeof(nd)); 957 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 958 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 959 err(1, "ioctl(SIOCGIFINFO_IN6)"); 960 /* NOTREACHED */ 961 } 962 #define ND nd.ndi 963 newflags = ND.flags; 964 for (i = 0; i < argc; i++) { 965 int clear = 0; 966 char *cp = argv[i]; 967 968 if (*cp == '-') { 969 clear = 1; 970 cp++; 971 } 972 973 #define SETFLAG(s, f) \ 974 do {\ 975 if (strcmp(cp, (s)) == 0) {\ 976 if (clear)\ 977 newflags &= ~(f);\ 978 else\ 979 newflags |= (f);\ 980 }\ 981 } while (0) 982 /* 983 * XXX: this macro is not 100% correct, in that it matches "nud" against 984 * "nudbogus". But we just let it go since this is minor. 985 */ 986 #define SETVALUE(f, v) \ 987 do { \ 988 char *valptr; \ 989 unsigned long newval; \ 990 v = 0; /* unspecified */ \ 991 if (strncmp(cp, f, strlen(f)) == 0) { \ 992 valptr = strchr(cp, '='); \ 993 if (valptr == NULL) \ 994 err(1, "syntax error in %s field", (f)); \ 995 errno = 0; \ 996 newval = strtoul(++valptr, NULL, 0); \ 997 if (errno) \ 998 err(1, "syntax error in %s's value", (f)); \ 999 v = newval; \ 1000 } \ 1001 } while (0) 1002 1003 SETFLAG("disabled", ND6_IFF_IFDISABLED); 1004 SETFLAG("nud", ND6_IFF_PERFORMNUD); 1005 #ifdef ND6_IFF_ACCEPT_RTADV 1006 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 1007 #endif 1008 #ifdef ND6_IFF_AUTO_LINKLOCAL 1009 SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL); 1010 #endif 1011 SETVALUE("basereachable", ND.basereachable); 1012 SETVALUE("retrans", ND.retrans); 1013 SETVALUE("curhlim", ND.chlim); 1014 1015 ND.flags = newflags; 1016 if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) { 1017 err(1, "ioctl(SIOCSIFINFO_IN6)"); 1018 /* NOTREACHED */ 1019 } 1020 #undef SETFLAG 1021 #undef SETVALUE 1022 } 1023 1024 if (!ND.initialized) { 1025 errx(1, "%s: not initialized yet", ifname); 1026 /* NOTREACHED */ 1027 } 1028 1029 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 1030 err(1, "ioctl(SIOCGIFINFO_IN6)"); 1031 /* NOTREACHED */ 1032 } 1033 printf("linkmtu=%d", ND.linkmtu); 1034 printf(", maxmtu=%d", ND.maxmtu); 1035 printf(", curhlim=%d", ND.chlim); 1036 printf(", basereachable=%ds%dms", 1037 ND.basereachable / 1000, ND.basereachable % 1000); 1038 printf(", reachable=%ds", ND.reachable); 1039 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 1040 #ifdef IPV6CTL_USETEMPADDR 1041 memset(nullbuf, 0, sizeof(nullbuf)); 1042 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 1043 int j; 1044 u_int8_t *rbuf; 1045 1046 for (i = 0; i < 3; i++) { 1047 switch (i) { 1048 case 0: 1049 printf("\nRandom seed(0): "); 1050 rbuf = ND.randomseed0; 1051 break; 1052 case 1: 1053 printf("\nRandom seed(1): "); 1054 rbuf = ND.randomseed1; 1055 break; 1056 case 2: 1057 printf("\nRandom ID: "); 1058 rbuf = ND.randomid; 1059 break; 1060 default: 1061 errx(1, "impossible case for tempaddr display"); 1062 } 1063 for (j = 0; j < 8; j++) 1064 printf("%02x", rbuf[j]); 1065 } 1066 } 1067 #endif 1068 if (ND.flags) { 1069 printf("\nFlags: "); 1070 #ifdef ND6_IFF_IFDISABLED 1071 if ((ND.flags & ND6_IFF_IFDISABLED)) 1072 printf("disabled "); 1073 #endif 1074 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1075 printf("nud "); 1076 #ifdef ND6_IFF_ACCEPT_RTADV 1077 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1078 printf("accept_rtadv "); 1079 #endif 1080 #ifdef ND6_IFF_AUTO_LINKLOCAL 1081 if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL)) 1082 printf("auto_linklocal "); 1083 #endif 1084 } 1085 putc('\n', stdout); 1086 #undef ND 1087 1088 close(s); 1089 } 1090 1091 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1092 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1093 #endif 1094 1095 void 1096 rtrlist() 1097 { 1098 #ifdef ICMPV6CTL_ND6_DRLIST 1099 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1100 char *buf; 1101 struct in6_defrouter *p, *ep; 1102 size_t l; 1103 struct timeval time; 1104 1105 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1106 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1107 /*NOTREACHED*/ 1108 } 1109 if (l == 0) 1110 return; 1111 buf = malloc(l); 1112 if (!buf) { 1113 err(1, "malloc"); 1114 /*NOTREACHED*/ 1115 } 1116 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1117 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1118 /*NOTREACHED*/ 1119 } 1120 1121 ep = (struct in6_defrouter *)(buf + l); 1122 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1123 int rtpref; 1124 1125 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1126 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1127 (nflag ? NI_NUMERICHOST : 0)) != 0) 1128 strlcpy(host_buf, "?", sizeof(host_buf)); 1129 1130 printf("%s if=%s", host_buf, 1131 if_indextoname(p->if_index, ifix_buf)); 1132 printf(", flags=%s%s", 1133 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1134 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1135 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1136 printf(", pref=%s", rtpref_str[rtpref]); 1137 1138 gettimeofday(&time, 0); 1139 if (p->expire == 0) 1140 printf(", expire=Never\n"); 1141 else 1142 printf(", expire=%s\n", 1143 sec2str(p->expire - time.tv_sec)); 1144 } 1145 free(buf); 1146 #else 1147 struct in6_drlist dr; 1148 int s, i; 1149 struct timeval time; 1150 1151 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1152 err(1, "socket"); 1153 /* NOTREACHED */ 1154 } 1155 bzero(&dr, sizeof(dr)); 1156 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1157 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1158 err(1, "ioctl(SIOCGDRLST_IN6)"); 1159 /* NOTREACHED */ 1160 } 1161 #define DR dr.defrouter[i] 1162 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1163 struct sockaddr_in6 sin6; 1164 1165 bzero(&sin6, sizeof(sin6)); 1166 sin6.sin6_family = AF_INET6; 1167 sin6.sin6_len = sizeof(sin6); 1168 sin6.sin6_addr = DR.rtaddr; 1169 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1170 sizeof(host_buf), NULL, 0, 1171 (nflag ? NI_NUMERICHOST : 0)); 1172 1173 printf("%s if=%s", host_buf, 1174 if_indextoname(DR.if_index, ifix_buf)); 1175 printf(", flags=%s%s", 1176 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1177 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1178 gettimeofday(&time, 0); 1179 if (DR.expire == 0) 1180 printf(", expire=Never\n"); 1181 else 1182 printf(", expire=%s\n", 1183 sec2str(DR.expire - time.tv_sec)); 1184 } 1185 #undef DR 1186 close(s); 1187 #endif 1188 } 1189 1190 void 1191 plist() 1192 { 1193 #ifdef ICMPV6CTL_ND6_PRLIST 1194 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1195 char *buf; 1196 struct in6_prefix *p, *ep, *n; 1197 struct sockaddr_in6 *advrtr; 1198 size_t l; 1199 struct timeval time; 1200 const int niflags = NI_NUMERICHOST; 1201 int ninflags = nflag ? NI_NUMERICHOST : 0; 1202 char namebuf[NI_MAXHOST]; 1203 1204 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1205 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1206 /*NOTREACHED*/ 1207 } 1208 buf = malloc(l); 1209 if (!buf) { 1210 err(1, "malloc"); 1211 /*NOTREACHED*/ 1212 } 1213 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1214 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1215 /*NOTREACHED*/ 1216 } 1217 1218 ep = (struct in6_prefix *)(buf + l); 1219 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1220 advrtr = (struct sockaddr_in6 *)(p + 1); 1221 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1222 1223 if (getnameinfo((struct sockaddr *)&p->prefix, 1224 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1225 NULL, 0, niflags) != 0) 1226 strlcpy(namebuf, "?", sizeof(namebuf)); 1227 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1228 if_indextoname(p->if_index, ifix_buf)); 1229 1230 gettimeofday(&time, 0); 1231 /* 1232 * meaning of fields, especially flags, is very different 1233 * by origin. notify the difference to the users. 1234 */ 1235 printf("flags=%s%s%s%s%s", 1236 p->raflags.onlink ? "L" : "", 1237 p->raflags.autonomous ? "A" : "", 1238 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1239 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1240 #ifdef NDPRF_HOME 1241 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1242 #else 1243 "" 1244 #endif 1245 ); 1246 if (p->vltime == ND6_INFINITE_LIFETIME) 1247 printf(" vltime=infinity"); 1248 else 1249 printf(" vltime=%lu", (unsigned long)p->vltime); 1250 if (p->pltime == ND6_INFINITE_LIFETIME) 1251 printf(", pltime=infinity"); 1252 else 1253 printf(", pltime=%lu", (unsigned long)p->pltime); 1254 if (p->expire == 0) 1255 printf(", expire=Never"); 1256 else if (p->expire >= time.tv_sec) 1257 printf(", expire=%s", 1258 sec2str(p->expire - time.tv_sec)); 1259 else 1260 printf(", expired"); 1261 printf(", ref=%d", p->refcnt); 1262 printf("\n"); 1263 /* 1264 * "advertising router" list is meaningful only if the prefix 1265 * information is from RA. 1266 */ 1267 if (p->advrtrs) { 1268 int j; 1269 struct sockaddr_in6 *sin6; 1270 1271 sin6 = advrtr; 1272 printf(" advertised by\n"); 1273 for (j = 0; j < p->advrtrs; j++) { 1274 struct in6_nbrinfo *nbi; 1275 1276 if (getnameinfo((struct sockaddr *)sin6, 1277 sin6->sin6_len, namebuf, sizeof(namebuf), 1278 NULL, 0, ninflags) != 0) 1279 strlcpy(namebuf, "?", sizeof(namebuf)); 1280 printf(" %s", namebuf); 1281 1282 nbi = getnbrinfo(&sin6->sin6_addr, 1283 p->if_index, 0); 1284 if (nbi) { 1285 switch (nbi->state) { 1286 case ND6_LLINFO_REACHABLE: 1287 case ND6_LLINFO_STALE: 1288 case ND6_LLINFO_DELAY: 1289 case ND6_LLINFO_PROBE: 1290 printf(" (reachable)\n"); 1291 break; 1292 default: 1293 printf(" (unreachable)\n"); 1294 } 1295 } else 1296 printf(" (no neighbor state)\n"); 1297 sin6++; 1298 } 1299 } else 1300 printf(" No advertising router\n"); 1301 } 1302 free(buf); 1303 #else 1304 struct in6_prlist pr; 1305 int s, i; 1306 struct timeval time; 1307 1308 gettimeofday(&time, 0); 1309 1310 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1311 err(1, "socket"); 1312 /* NOTREACHED */ 1313 } 1314 bzero(&pr, sizeof(pr)); 1315 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1316 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1317 err(1, "ioctl(SIOCGPRLST_IN6)"); 1318 /* NOTREACHED */ 1319 } 1320 #define PR pr.prefix[i] 1321 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1322 struct sockaddr_in6 p6; 1323 char namebuf[NI_MAXHOST]; 1324 int niflags; 1325 1326 #ifdef NDPRF_ONLINK 1327 p6 = PR.prefix; 1328 #else 1329 memset(&p6, 0, sizeof(p6)); 1330 p6.sin6_family = AF_INET6; 1331 p6.sin6_len = sizeof(p6); 1332 p6.sin6_addr = PR.prefix; 1333 #endif 1334 1335 /* 1336 * copy link index to sin6_scope_id field. 1337 * XXX: KAME specific. 1338 */ 1339 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1340 u_int16_t linkid; 1341 1342 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1343 sizeof(linkid)); 1344 linkid = ntohs(linkid); 1345 p6.sin6_scope_id = linkid; 1346 p6.sin6_addr.s6_addr[2] = 0; 1347 p6.sin6_addr.s6_addr[3] = 0; 1348 } 1349 1350 niflags = NI_NUMERICHOST; 1351 if (getnameinfo((struct sockaddr *)&p6, 1352 sizeof(p6), namebuf, sizeof(namebuf), 1353 NULL, 0, niflags)) { 1354 warnx("getnameinfo failed"); 1355 continue; 1356 } 1357 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1358 if_indextoname(PR.if_index, ifix_buf)); 1359 1360 gettimeofday(&time, 0); 1361 /* 1362 * meaning of fields, especially flags, is very different 1363 * by origin. notify the difference to the users. 1364 */ 1365 #if 0 1366 printf(" %s", 1367 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1368 #endif 1369 #ifdef NDPRF_ONLINK 1370 printf("flags=%s%s%s%s%s", 1371 PR.raflags.onlink ? "L" : "", 1372 PR.raflags.autonomous ? "A" : "", 1373 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1374 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1375 #ifdef NDPRF_HOME 1376 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1377 #else 1378 "" 1379 #endif 1380 ); 1381 #else 1382 printf("flags=%s%s", 1383 PR.raflags.onlink ? "L" : "", 1384 PR.raflags.autonomous ? "A" : ""); 1385 #endif 1386 if (PR.vltime == ND6_INFINITE_LIFETIME) 1387 printf(" vltime=infinity"); 1388 else 1389 printf(" vltime=%lu", PR.vltime); 1390 if (PR.pltime == ND6_INFINITE_LIFETIME) 1391 printf(", pltime=infinity"); 1392 else 1393 printf(", pltime=%lu", PR.pltime); 1394 if (PR.expire == 0) 1395 printf(", expire=Never"); 1396 else if (PR.expire >= time.tv_sec) 1397 printf(", expire=%s", 1398 sec2str(PR.expire - time.tv_sec)); 1399 else 1400 printf(", expired"); 1401 #ifdef NDPRF_ONLINK 1402 printf(", ref=%d", PR.refcnt); 1403 #endif 1404 #if 0 1405 switch (PR.origin) { 1406 case PR_ORIG_RA: 1407 printf(", origin=RA"); 1408 break; 1409 case PR_ORIG_RR: 1410 printf(", origin=RR"); 1411 break; 1412 case PR_ORIG_STATIC: 1413 printf(", origin=static"); 1414 break; 1415 case PR_ORIG_KERNEL: 1416 printf(", origin=kernel"); 1417 break; 1418 default: 1419 printf(", origin=?"); 1420 break; 1421 } 1422 #endif 1423 printf("\n"); 1424 /* 1425 * "advertising router" list is meaningful only if the prefix 1426 * information is from RA. 1427 */ 1428 if (0 && /* prefix origin is almost obsolted */ 1429 PR.origin != PR_ORIG_RA) 1430 ; 1431 else if (PR.advrtrs) { 1432 int j; 1433 printf(" advertised by\n"); 1434 for (j = 0; j < PR.advrtrs; j++) { 1435 struct sockaddr_in6 sin6; 1436 struct in6_nbrinfo *nbi; 1437 1438 bzero(&sin6, sizeof(sin6)); 1439 sin6.sin6_family = AF_INET6; 1440 sin6.sin6_len = sizeof(sin6); 1441 sin6.sin6_addr = PR.advrtr[j]; 1442 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1443 getnameinfo((struct sockaddr *)&sin6, 1444 sin6.sin6_len, host_buf, 1445 sizeof(host_buf), NULL, 0, 1446 (nflag ? NI_NUMERICHOST : 0)); 1447 printf(" %s", host_buf); 1448 1449 nbi = getnbrinfo(&sin6.sin6_addr, 1450 PR.if_index, 0); 1451 if (nbi) { 1452 switch (nbi->state) { 1453 case ND6_LLINFO_REACHABLE: 1454 case ND6_LLINFO_STALE: 1455 case ND6_LLINFO_DELAY: 1456 case ND6_LLINFO_PROBE: 1457 printf(" (reachable)\n"); 1458 break; 1459 default: 1460 printf(" (unreachable)\n"); 1461 } 1462 } else 1463 printf(" (no neighbor state)\n"); 1464 } 1465 if (PR.advrtrs > DRLSTSIZ) 1466 printf(" and %d routers\n", 1467 PR.advrtrs - DRLSTSIZ); 1468 } else 1469 printf(" No advertising router\n"); 1470 } 1471 #undef PR 1472 close(s); 1473 #endif 1474 } 1475 1476 void 1477 pfx_flush() 1478 { 1479 char dummyif[IFNAMSIZ+8]; 1480 int s; 1481 1482 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1483 err(1, "socket"); 1484 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1485 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1486 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1487 } 1488 1489 void 1490 rtr_flush() 1491 { 1492 char dummyif[IFNAMSIZ+8]; 1493 int s; 1494 1495 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1496 err(1, "socket"); 1497 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1498 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1499 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1500 1501 close(s); 1502 } 1503 1504 void 1505 harmonize_rtr() 1506 { 1507 char dummyif[IFNAMSIZ+8]; 1508 int s; 1509 1510 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1511 err(1, "socket"); 1512 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1513 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1514 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1515 1516 close(s); 1517 } 1518 1519 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1520 static void 1521 setdefif(ifname) 1522 char *ifname; 1523 { 1524 struct in6_ndifreq ndifreq; 1525 unsigned int ifindex; 1526 1527 if (strcasecmp(ifname, "delete") == 0) 1528 ifindex = 0; 1529 else { 1530 if ((ifindex = if_nametoindex(ifname)) == 0) 1531 err(1, "failed to resolve i/f index for %s", ifname); 1532 } 1533 1534 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1535 err(1, "socket"); 1536 1537 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1538 ndifreq.ifindex = ifindex; 1539 1540 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1541 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1542 1543 close(s); 1544 } 1545 1546 static void 1547 getdefif() 1548 { 1549 struct in6_ndifreq ndifreq; 1550 char ifname[IFNAMSIZ+8]; 1551 1552 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1553 err(1, "socket"); 1554 1555 memset(&ndifreq, 0, sizeof(ndifreq)); 1556 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1557 1558 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1559 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1560 1561 if (ndifreq.ifindex == 0) 1562 printf("No default interface.\n"); 1563 else { 1564 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1565 err(1, "failed to resolve ifname for index %lu", 1566 ndifreq.ifindex); 1567 printf("ND default interface = %s\n", ifname); 1568 } 1569 1570 close(s); 1571 } 1572 #endif 1573 1574 static char * 1575 sec2str(total) 1576 time_t total; 1577 { 1578 static char result[256]; 1579 int days, hours, mins, secs; 1580 int first = 1; 1581 char *p = result; 1582 char *ep = &result[sizeof(result)]; 1583 int n; 1584 1585 days = total / 3600 / 24; 1586 hours = (total / 3600) % 24; 1587 mins = (total / 60) % 60; 1588 secs = total % 60; 1589 1590 if (days) { 1591 first = 0; 1592 n = snprintf(p, ep - p, "%dd", days); 1593 if (n < 0 || n >= ep - p) 1594 return "?"; 1595 p += n; 1596 } 1597 if (!first || hours) { 1598 first = 0; 1599 n = snprintf(p, ep - p, "%dh", hours); 1600 if (n < 0 || n >= ep - p) 1601 return "?"; 1602 p += n; 1603 } 1604 if (!first || mins) { 1605 first = 0; 1606 n = snprintf(p, ep - p, "%dm", mins); 1607 if (n < 0 || n >= ep - p) 1608 return "?"; 1609 p += n; 1610 } 1611 snprintf(p, ep - p, "%ds", secs); 1612 1613 return(result); 1614 } 1615 1616 /* 1617 * Print the timestamp 1618 * from tcpdump/util.c 1619 */ 1620 static void 1621 ts_print(tvp) 1622 const struct timeval *tvp; 1623 { 1624 int s; 1625 1626 /* Default */ 1627 s = (tvp->tv_sec + thiszone) % 86400; 1628 (void)printf("%02d:%02d:%02d.%06u ", 1629 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1630 } 1631 1632 #undef NEXTADDR 1633