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 #define NEXTADDR(w, s) \ 113 if (rtm->rtm_addrs & (w)) { \ 114 bcopy((char *)&s, cp, sizeof(s)); cp += SA_SIZE(&s);} 115 116 117 static pid_t pid; 118 static int nflag; 119 static int tflag; 120 static int32_t thiszone; /* time difference with gmt */ 121 static int s = -1; 122 static int repeat = 0; 123 124 char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 125 char host_buf[NI_MAXHOST]; /* getnameinfo() */ 126 char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 127 128 int main(int, char **); 129 int file(char *); 130 void getsocket(void); 131 int set(int, char **); 132 void get(char *); 133 int delete(char *); 134 void dump(struct sockaddr_in6 *, int); 135 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *, int, int); 136 static char *ether_str(struct sockaddr_dl *); 137 int ndp_ether_aton(char *, u_char *); 138 void usage(void); 139 int rtmsg(int); 140 void ifinfo(char *, int, char **); 141 void rtrlist(void); 142 void plist(void); 143 void pfx_flush(void); 144 void rtr_flush(void); 145 void harmonize_rtr(void); 146 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 147 static void getdefif(void); 148 static void setdefif(char *); 149 #endif 150 static char *sec2str(time_t); 151 static void ts_print(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(int argc, char **argv) 167 { 168 int ch; 169 170 pid = getpid(); 171 thiszone = gmt2local(0); 172 while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 173 switch (ch) { 174 case 'a': 175 case 'c': 176 case 'p': 177 case 'r': 178 case 'H': 179 case 'P': 180 case 'R': 181 case 's': 182 case 'I': 183 if (mode) { 184 usage(); 185 /*NOTREACHED*/ 186 } 187 mode = ch; 188 arg = NULL; 189 break; 190 case 'd': 191 case 'f': 192 case 'i' : 193 if (mode) { 194 usage(); 195 /*NOTREACHED*/ 196 } 197 mode = ch; 198 arg = optarg; 199 break; 200 case 'n': 201 nflag = 1; 202 break; 203 case 't': 204 tflag = 1; 205 break; 206 case 'A': 207 if (mode) { 208 usage(); 209 /*NOTREACHED*/ 210 } 211 mode = 'a'; 212 repeat = atoi(optarg); 213 if (repeat < 0) { 214 usage(); 215 /*NOTREACHED*/ 216 } 217 break; 218 default: 219 usage(); 220 } 221 222 argc -= optind; 223 argv += optind; 224 225 switch (mode) { 226 case 'a': 227 case 'c': 228 if (argc != 0) { 229 usage(); 230 /*NOTREACHED*/ 231 } 232 dump(0, mode == 'c'); 233 break; 234 case 'd': 235 if (argc != 0) { 236 usage(); 237 /*NOTREACHED*/ 238 } 239 delete(arg); 240 break; 241 case 'I': 242 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 243 if (argc > 1) { 244 usage(); 245 /*NOTREACHED*/ 246 } else if (argc == 1) { 247 if (strcmp(*argv, "delete") == 0 || 248 if_nametoindex(*argv)) 249 setdefif(*argv); 250 else 251 errx(1, "invalid interface %s", *argv); 252 } 253 getdefif(); /* always call it to print the result */ 254 break; 255 #else 256 errx(1, "not supported yet"); 257 /*NOTREACHED*/ 258 #endif 259 case 'p': 260 if (argc != 0) { 261 usage(); 262 /*NOTREACHED*/ 263 } 264 plist(); 265 break; 266 case 'i': 267 ifinfo(arg, argc, argv); 268 break; 269 case 'r': 270 if (argc != 0) { 271 usage(); 272 /*NOTREACHED*/ 273 } 274 rtrlist(); 275 break; 276 case 's': 277 if (argc < 2 || argc > 4) 278 usage(); 279 exit(set(argc, argv) ? 1 : 0); 280 case 'H': 281 if (argc != 0) { 282 usage(); 283 /*NOTREACHED*/ 284 } 285 harmonize_rtr(); 286 break; 287 case 'P': 288 if (argc != 0) { 289 usage(); 290 /*NOTREACHED*/ 291 } 292 pfx_flush(); 293 break; 294 case 'R': 295 if (argc != 0) { 296 usage(); 297 /*NOTREACHED*/ 298 } 299 rtr_flush(); 300 break; 301 case 0: 302 if (argc != 1) { 303 usage(); 304 /*NOTREACHED*/ 305 } 306 get(argv[0]); 307 break; 308 } 309 exit(0); 310 } 311 312 /* 313 * Process a file to set standard ndp entries 314 */ 315 int 316 file(char *name) 317 { 318 FILE *fp; 319 int i, retval; 320 char line[100], arg[5][50], *args[5]; 321 322 if ((fp = fopen(name, "r")) == NULL) { 323 fprintf(stderr, "ndp: cannot open %s\n", name); 324 exit(1); 325 } 326 args[0] = &arg[0][0]; 327 args[1] = &arg[1][0]; 328 args[2] = &arg[2][0]; 329 args[3] = &arg[3][0]; 330 args[4] = &arg[4][0]; 331 retval = 0; 332 while (fgets(line, sizeof(line), fp) != NULL) { 333 i = sscanf(line, "%49s %49s %49s %49s %49s", 334 arg[0], arg[1], arg[2], arg[3], arg[4]); 335 if (i < 2) { 336 fprintf(stderr, "ndp: bad line: %s\n", line); 337 retval = 1; 338 continue; 339 } 340 if (set(i, args)) 341 retval = 1; 342 } 343 fclose(fp); 344 return (retval); 345 } 346 347 void 348 getsocket() 349 { 350 if (s < 0) { 351 s = socket(PF_ROUTE, SOCK_RAW, 0); 352 if (s < 0) { 353 err(1, "socket"); 354 /* NOTREACHED */ 355 } 356 } 357 } 358 359 struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 360 struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 361 struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 362 time_t expire_time; 363 int flags, found_entry; 364 struct { 365 struct rt_msghdr m_rtm; 366 char m_space[512]; 367 } m_rtmsg; 368 369 /* 370 * Set an individual neighbor cache entry 371 */ 372 int 373 set(int argc, char **argv) 374 { 375 register struct sockaddr_in6 *sin = &sin_m; 376 register struct sockaddr_dl *sdl; 377 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 378 struct addrinfo hints, *res; 379 int gai_error; 380 u_char *ea; 381 char *host = argv[0], *eaddr = argv[1]; 382 383 getsocket(); 384 argc -= 2; 385 argv += 2; 386 sdl_m = blank_sdl; 387 sin_m = blank_sin; 388 389 bzero(&hints, sizeof(hints)); 390 hints.ai_family = AF_INET6; 391 gai_error = getaddrinfo(host, NULL, &hints, &res); 392 if (gai_error) { 393 fprintf(stderr, "ndp: %s: %s\n", host, 394 gai_strerror(gai_error)); 395 return 1; 396 } 397 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 398 sin->sin6_scope_id = 399 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 400 ea = (u_char *)LLADDR(&sdl_m); 401 if (ndp_ether_aton(eaddr, ea) == 0) 402 sdl_m.sdl_alen = 6; 403 flags = expire_time = 0; 404 while (argc-- > 0) { 405 if (strncmp(argv[0], "temp", 4) == 0) { 406 struct timeval now; 407 408 gettimeofday(&now, 0); 409 expire_time = now.tv_sec + 20 * 60; 410 } else if (strncmp(argv[0], "proxy", 5) == 0) 411 flags |= RTF_ANNOUNCE; 412 argv++; 413 } 414 if (rtmsg(RTM_GET) < 0) { 415 errx(1, "RTM_GET(%s) failed", host); 416 /* NOTREACHED */ 417 } 418 sin = (struct sockaddr_in6 *)(rtm + 1); 419 sdl = (struct sockaddr_dl *)(ALIGN(sin->sin6_len) + (char *)sin); 420 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 421 if (sdl->sdl_family == AF_LINK && 422 !(rtm->rtm_flags & RTF_GATEWAY)) { 423 switch (sdl->sdl_type) { 424 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 425 case IFT_ISO88024: case IFT_ISO88025: 426 case IFT_L2VLAN: case IFT_BRIDGE: 427 goto overwrite; 428 } 429 } 430 fprintf(stderr, "set: cannot configure a new entry\n"); 431 return 1; 432 } 433 434 overwrite: 435 if (sdl->sdl_family != AF_LINK) { 436 printf("cannot intuit interface index and type for %s\n", host); 437 return (1); 438 } 439 sdl_m.sdl_type = sdl->sdl_type; 440 sdl_m.sdl_index = sdl->sdl_index; 441 return (rtmsg(RTM_ADD)); 442 } 443 444 /* 445 * Display an individual neighbor cache entry 446 */ 447 void 448 get(char *host) 449 { 450 struct sockaddr_in6 *sin = &sin_m; 451 struct addrinfo hints, *res; 452 int gai_error; 453 454 sin_m = blank_sin; 455 bzero(&hints, sizeof(hints)); 456 hints.ai_family = AF_INET6; 457 gai_error = getaddrinfo(host, NULL, &hints, &res); 458 if (gai_error) { 459 fprintf(stderr, "ndp: %s: %s\n", host, 460 gai_strerror(gai_error)); 461 return; 462 } 463 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 464 sin->sin6_scope_id = 465 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 466 dump(sin, 0); 467 if (found_entry == 0) { 468 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 469 sizeof(host_buf), NULL ,0, 470 (nflag ? NI_NUMERICHOST : 0)); 471 printf("%s (%s) -- no entry\n", host, host_buf); 472 exit(1); 473 } 474 } 475 476 /* 477 * Delete a neighbor cache entry 478 */ 479 int 480 delete(char *host) 481 { 482 struct sockaddr_in6 *sin = &sin_m; 483 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 484 register char *cp = m_rtmsg.m_space; 485 struct sockaddr_dl *sdl; 486 struct addrinfo hints, *res; 487 int gai_error; 488 489 getsocket(); 490 sin_m = blank_sin; 491 492 bzero(&hints, sizeof(hints)); 493 hints.ai_family = AF_INET6; 494 gai_error = getaddrinfo(host, NULL, &hints, &res); 495 if (gai_error) { 496 fprintf(stderr, "ndp: %s: %s\n", host, 497 gai_strerror(gai_error)); 498 return 1; 499 } 500 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 501 sin->sin6_scope_id = 502 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 503 if (rtmsg(RTM_GET) < 0) { 504 errx(1, "RTM_GET(%s) failed", host); 505 /* NOTREACHED */ 506 } 507 sin = (struct sockaddr_in6 *)(rtm + 1); 508 sdl = (struct sockaddr_dl *)(ALIGN(sin->sin6_len) + (char *)sin); 509 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 510 if (sdl->sdl_family == AF_LINK && 511 !(rtm->rtm_flags & RTF_GATEWAY)) { 512 goto delete; 513 } 514 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 515 return 1; 516 } 517 518 delete: 519 if (sdl->sdl_family != AF_LINK) { 520 printf("cannot locate %s\n", host); 521 return (1); 522 } 523 /* 524 * need to reinit the field because it has rt_key 525 * but we want the actual address 526 */ 527 NEXTADDR(RTA_DST, sin_m); 528 rtm->rtm_flags |= RTF_LLDATA; 529 if (rtmsg(RTM_DELETE) == 0) { 530 getnameinfo((struct sockaddr *)sin, 531 sin->sin6_len, host_buf, 532 sizeof(host_buf), NULL, 0, 533 (nflag ? NI_NUMERICHOST : 0)); 534 printf("%s (%s) deleted\n", host, host_buf); 535 } 536 537 return 0; 538 } 539 540 #define W_ADDR 36 541 #define W_LL 17 542 #define W_IF 6 543 544 /* 545 * Dump the entire neighbor cache 546 */ 547 void 548 dump(struct sockaddr_in6 *addr, int cflag) 549 { 550 int mib[6]; 551 size_t needed; 552 char *lim, *buf, *next; 553 struct rt_msghdr *rtm; 554 struct sockaddr_in6 *sin; 555 struct sockaddr_dl *sdl; 556 extern int h_errno; 557 struct in6_nbrinfo *nbi; 558 struct timeval now; 559 int addrwidth; 560 int llwidth; 561 int ifwidth; 562 char flgbuf[8]; 563 char *ifname; 564 565 /* Print header */ 566 if (!tflag && !cflag) 567 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 568 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 569 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 570 571 again:; 572 mib[0] = CTL_NET; 573 mib[1] = PF_ROUTE; 574 mib[2] = 0; 575 mib[3] = AF_INET6; 576 mib[4] = NET_RT_FLAGS; 577 #ifdef RTF_LLINFO 578 mib[5] = RTF_LLINFO; 579 #else 580 mib[5] = 0; 581 #endif 582 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 583 err(1, "sysctl(PF_ROUTE estimate)"); 584 if (needed > 0) { 585 if ((buf = malloc(needed)) == NULL) 586 err(1, "malloc"); 587 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 588 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 589 lim = buf + needed; 590 } else 591 buf = lim = NULL; 592 593 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 594 int isrouter = 0, prbs = 0; 595 596 rtm = (struct rt_msghdr *)next; 597 sin = (struct sockaddr_in6 *)(rtm + 1); 598 sdl = (struct sockaddr_dl *)((char *)sin + ALIGN(sin->sin6_len)); 599 600 /* 601 * Some OSes can produce a route that has the LINK flag but 602 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 603 * and BSD/OS, where xx is not the interface identifier on 604 * lo0). Such routes entry would annoy getnbrinfo() below, 605 * so we skip them. 606 * XXX: such routes should have the GATEWAY flag, not the 607 * LINK flag. However, there is rotten routing software 608 * that advertises all routes that have the GATEWAY flag. 609 * Thus, KAME kernel intentionally does not set the LINK flag. 610 * What is to be fixed is not ndp, but such routing software 611 * (and the kernel workaround)... 612 */ 613 if (sdl->sdl_family != AF_LINK) 614 continue; 615 616 if (!(rtm->rtm_flags & RTF_HOST)) 617 continue; 618 619 if (addr) { 620 if (IN6_ARE_ADDR_EQUAL(&addr->sin6_addr, 621 &sin->sin6_addr) == 0 || 622 addr->sin6_scope_id != sin->sin6_scope_id) 623 continue; 624 found_entry = 1; 625 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 626 continue; 627 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 628 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 629 /* XXX: should scope id be filled in the kernel? */ 630 if (sin->sin6_scope_id == 0) 631 sin->sin6_scope_id = sdl->sdl_index; 632 } 633 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 634 sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0)); 635 if (cflag) { 636 #ifdef RTF_WASCLONED 637 if (rtm->rtm_flags & RTF_WASCLONED) 638 delete(host_buf); 639 #elif defined(RTF_CLONED) 640 if (rtm->rtm_flags & RTF_CLONED) 641 delete(host_buf); 642 #else 643 delete(host_buf); 644 #endif 645 continue; 646 } 647 gettimeofday(&now, 0); 648 if (tflag) 649 ts_print(&now); 650 651 addrwidth = strlen(host_buf); 652 if (addrwidth < W_ADDR) 653 addrwidth = W_ADDR; 654 llwidth = strlen(ether_str(sdl)); 655 if (W_ADDR + W_LL - addrwidth > llwidth) 656 llwidth = W_ADDR + W_LL - addrwidth; 657 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 658 if (!ifname) 659 ifname = "?"; 660 ifwidth = strlen(ifname); 661 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 662 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 663 664 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 665 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 666 667 /* Print neighbor discovery specific informations */ 668 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 669 if (nbi) { 670 if (nbi->expire > now.tv_sec) { 671 printf(" %-9.9s", 672 sec2str(nbi->expire - now.tv_sec)); 673 } else if (nbi->expire == 0) 674 printf(" %-9.9s", "permanent"); 675 else 676 printf(" %-9.9s", "expired"); 677 678 switch (nbi->state) { 679 case ND6_LLINFO_NOSTATE: 680 printf(" N"); 681 break; 682 #ifdef ND6_LLINFO_WAITDELETE 683 case ND6_LLINFO_WAITDELETE: 684 printf(" W"); 685 break; 686 #endif 687 case ND6_LLINFO_INCOMPLETE: 688 printf(" I"); 689 break; 690 case ND6_LLINFO_REACHABLE: 691 printf(" R"); 692 break; 693 case ND6_LLINFO_STALE: 694 printf(" S"); 695 break; 696 case ND6_LLINFO_DELAY: 697 printf(" D"); 698 break; 699 case ND6_LLINFO_PROBE: 700 printf(" P"); 701 break; 702 default: 703 printf(" ?"); 704 break; 705 } 706 707 isrouter = nbi->isrouter; 708 prbs = nbi->asked; 709 } else { 710 warnx("failed to get neighbor information"); 711 printf(" "); 712 } 713 714 /* 715 * other flags. R: router, P: proxy, W: ?? 716 */ 717 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 718 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 719 isrouter ? "R" : "", 720 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 721 } else { 722 sin = (struct sockaddr_in6 *) 723 (sdl->sdl_len + (char *)sdl); 724 #if 0 /* W and P are mystery even for us */ 725 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 726 isrouter ? "R" : "", 727 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 728 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 729 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 730 #else 731 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 732 isrouter ? "R" : "", 733 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 734 #endif 735 } 736 printf(" %s", flgbuf); 737 738 if (prbs) 739 printf(" %d", prbs); 740 741 printf("\n"); 742 } 743 if (buf != NULL) 744 free(buf); 745 746 if (repeat) { 747 printf("\n"); 748 fflush(stdout); 749 sleep(repeat); 750 goto again; 751 } 752 } 753 754 static struct in6_nbrinfo * 755 getnbrinfo(struct in6_addr *addr, int ifindex, int warning) 756 { 757 static struct in6_nbrinfo nbi; 758 int s; 759 760 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 761 err(1, "socket"); 762 763 bzero(&nbi, sizeof(nbi)); 764 if_indextoname(ifindex, nbi.ifname); 765 nbi.addr = *addr; 766 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 767 if (warning) 768 warn("ioctl(SIOCGNBRINFO_IN6)"); 769 close(s); 770 return(NULL); 771 } 772 773 close(s); 774 return(&nbi); 775 } 776 777 static char * 778 ether_str(struct sockaddr_dl *sdl) 779 { 780 static char hbuf[NI_MAXHOST]; 781 char *cp; 782 783 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 784 strlcpy(hbuf, ether_ntoa((struct ether_addr *)LLADDR(sdl)), 785 sizeof(hbuf)); 786 } else if (sdl->sdl_alen) { 787 int n = sdl->sdl_nlen > 0 ? sdl->sdl_nlen + 1 : 0; 788 snprintf(hbuf, sizeof(hbuf), "%s", link_ntoa(sdl) + n); 789 } else 790 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 791 792 return(hbuf); 793 } 794 795 int 796 ndp_ether_aton(char *a, u_char *n) 797 { 798 int i, o[6]; 799 800 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 801 &o[3], &o[4], &o[5]); 802 if (i != 6) { 803 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 804 return (1); 805 } 806 for (i = 0; i < 6; i++) 807 n[i] = o[i]; 808 return (0); 809 } 810 811 void 812 usage() 813 { 814 printf("usage: ndp [-nt] hostname\n"); 815 printf(" ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n"); 816 printf(" ndp [-nt] -A wait\n"); 817 printf(" ndp [-nt] -d hostname\n"); 818 printf(" ndp [-nt] -f filename\n"); 819 printf(" ndp [-nt] -i interface [flags...]\n"); 820 #ifdef SIOCSDEFIFACE_IN6 821 printf(" ndp [-nt] -I [interface|delete]\n"); 822 #endif 823 printf(" ndp [-nt] -s nodename etheraddr [temp] [proxy]\n"); 824 exit(1); 825 } 826 827 int 828 rtmsg(int cmd) 829 { 830 static int seq; 831 int rlen; 832 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 833 register char *cp = m_rtmsg.m_space; 834 register int l; 835 836 errno = 0; 837 if (cmd == RTM_DELETE) 838 goto doit; 839 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 840 rtm->rtm_flags = flags; 841 rtm->rtm_version = RTM_VERSION; 842 843 switch (cmd) { 844 default: 845 fprintf(stderr, "ndp: internal wrong cmd\n"); 846 exit(1); 847 case RTM_ADD: 848 rtm->rtm_addrs |= RTA_GATEWAY; 849 if (expire_time) { 850 rtm->rtm_rmx.rmx_expire = expire_time; 851 rtm->rtm_inits = RTV_EXPIRE; 852 } 853 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA); 854 #if 0 /* we don't support ipv6addr/128 type proxying */ 855 if (rtm->rtm_flags & RTF_ANNOUNCE) { 856 rtm->rtm_flags &= ~RTF_HOST; 857 rtm->rtm_addrs |= RTA_NETMASK; 858 } 859 #endif 860 /* FALLTHROUGH */ 861 case RTM_GET: 862 rtm->rtm_addrs |= RTA_DST; 863 } 864 865 NEXTADDR(RTA_DST, sin_m); 866 NEXTADDR(RTA_GATEWAY, sdl_m); 867 #if 0 /* we don't support ipv6addr/128 type proxying */ 868 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 869 NEXTADDR(RTA_NETMASK, so_mask); 870 #endif 871 872 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 873 doit: 874 l = rtm->rtm_msglen; 875 rtm->rtm_seq = ++seq; 876 rtm->rtm_type = cmd; 877 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 878 if (errno != ESRCH || cmd != RTM_DELETE) { 879 err(1, "writing to routing socket"); 880 /* NOTREACHED */ 881 } 882 } 883 do { 884 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 885 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 886 if (l < 0) 887 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 888 strerror(errno)); 889 return (0); 890 } 891 892 void 893 ifinfo(char *ifname, int argc, char **argv) 894 { 895 struct in6_ndireq nd; 896 int i, s; 897 u_int32_t newflags; 898 #ifdef IPV6CTL_USETEMPADDR 899 u_int8_t nullbuf[8]; 900 #endif 901 902 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 903 err(1, "socket"); 904 /* NOTREACHED */ 905 } 906 bzero(&nd, sizeof(nd)); 907 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 908 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 909 err(1, "ioctl(SIOCGIFINFO_IN6)"); 910 /* NOTREACHED */ 911 } 912 #define ND nd.ndi 913 newflags = ND.flags; 914 for (i = 0; i < argc; i++) { 915 int clear = 0; 916 char *cp = argv[i]; 917 918 if (*cp == '-') { 919 clear = 1; 920 cp++; 921 } 922 923 #define SETFLAG(s, f) \ 924 do {\ 925 if (strcmp(cp, (s)) == 0) {\ 926 if (clear)\ 927 newflags &= ~(f);\ 928 else\ 929 newflags |= (f);\ 930 }\ 931 } while (0) 932 /* 933 * XXX: this macro is not 100% correct, in that it matches "nud" against 934 * "nudbogus". But we just let it go since this is minor. 935 */ 936 #define SETVALUE(f, v) \ 937 do { \ 938 char *valptr; \ 939 unsigned long newval; \ 940 v = 0; /* unspecified */ \ 941 if (strncmp(cp, f, strlen(f)) == 0) { \ 942 valptr = strchr(cp, '='); \ 943 if (valptr == NULL) \ 944 err(1, "syntax error in %s field", (f)); \ 945 errno = 0; \ 946 newval = strtoul(++valptr, NULL, 0); \ 947 if (errno) \ 948 err(1, "syntax error in %s's value", (f)); \ 949 v = newval; \ 950 } \ 951 } while (0) 952 953 SETFLAG("disabled", ND6_IFF_IFDISABLED); 954 SETFLAG("nud", ND6_IFF_PERFORMNUD); 955 #ifdef ND6_IFF_ACCEPT_RTADV 956 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 957 #endif 958 #ifdef ND6_IFF_AUTO_LINKLOCAL 959 SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL); 960 #endif 961 #ifdef ND6_IFF_NO_PREFER_IFACE 962 SETFLAG("no_prefer_iface", ND6_IFF_NO_PREFER_IFACE); 963 #endif 964 SETVALUE("basereachable", ND.basereachable); 965 SETVALUE("retrans", ND.retrans); 966 SETVALUE("curhlim", ND.chlim); 967 968 ND.flags = newflags; 969 if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) { 970 err(1, "ioctl(SIOCSIFINFO_IN6)"); 971 /* NOTREACHED */ 972 } 973 #undef SETFLAG 974 #undef SETVALUE 975 } 976 977 if (!ND.initialized) { 978 errx(1, "%s: not initialized yet", ifname); 979 /* NOTREACHED */ 980 } 981 982 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 983 err(1, "ioctl(SIOCGIFINFO_IN6)"); 984 /* NOTREACHED */ 985 } 986 printf("linkmtu=%d", ND.linkmtu); 987 printf(", maxmtu=%d", ND.maxmtu); 988 printf(", curhlim=%d", ND.chlim); 989 printf(", basereachable=%ds%dms", 990 ND.basereachable / 1000, ND.basereachable % 1000); 991 printf(", reachable=%ds", ND.reachable); 992 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 993 #ifdef IPV6CTL_USETEMPADDR 994 memset(nullbuf, 0, sizeof(nullbuf)); 995 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 996 int j; 997 u_int8_t *rbuf; 998 999 for (i = 0; i < 3; i++) { 1000 switch (i) { 1001 case 0: 1002 printf("\nRandom seed(0): "); 1003 rbuf = ND.randomseed0; 1004 break; 1005 case 1: 1006 printf("\nRandom seed(1): "); 1007 rbuf = ND.randomseed1; 1008 break; 1009 case 2: 1010 printf("\nRandom ID: "); 1011 rbuf = ND.randomid; 1012 break; 1013 default: 1014 errx(1, "impossible case for tempaddr display"); 1015 } 1016 for (j = 0; j < 8; j++) 1017 printf("%02x", rbuf[j]); 1018 } 1019 } 1020 #endif 1021 if (ND.flags) { 1022 printf("\nFlags: "); 1023 #ifdef ND6_IFF_IFDISABLED 1024 if ((ND.flags & ND6_IFF_IFDISABLED)) 1025 printf("disabled "); 1026 #endif 1027 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1028 printf("nud "); 1029 #ifdef ND6_IFF_ACCEPT_RTADV 1030 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1031 printf("accept_rtadv "); 1032 #endif 1033 #ifdef ND6_IFF_AUTO_LINKLOCAL 1034 if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL)) 1035 printf("auto_linklocal "); 1036 #endif 1037 #ifdef ND6_IFF_NO_PREFER_IFACE 1038 if ((ND.flags & ND6_IFF_NO_PREFER_IFACE)) 1039 printf("no_prefer_iface "); 1040 #endif 1041 } 1042 putc('\n', stdout); 1043 #undef ND 1044 1045 close(s); 1046 } 1047 1048 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1049 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1050 #endif 1051 1052 void 1053 rtrlist() 1054 { 1055 #ifdef ICMPV6CTL_ND6_DRLIST 1056 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1057 char *buf; 1058 struct in6_defrouter *p, *ep; 1059 size_t l; 1060 struct timeval now; 1061 1062 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1063 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1064 /*NOTREACHED*/ 1065 } 1066 if (l == 0) 1067 return; 1068 buf = malloc(l); 1069 if (!buf) { 1070 err(1, "malloc"); 1071 /*NOTREACHED*/ 1072 } 1073 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1074 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1075 /*NOTREACHED*/ 1076 } 1077 1078 ep = (struct in6_defrouter *)(buf + l); 1079 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1080 int rtpref; 1081 1082 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1083 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1084 (nflag ? NI_NUMERICHOST : 0)) != 0) 1085 strlcpy(host_buf, "?", sizeof(host_buf)); 1086 1087 printf("%s if=%s", host_buf, 1088 if_indextoname(p->if_index, ifix_buf)); 1089 printf(", flags=%s%s", 1090 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1091 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1092 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1093 printf(", pref=%s", rtpref_str[rtpref]); 1094 1095 gettimeofday(&now, 0); 1096 if (p->expire == 0) 1097 printf(", expire=Never\n"); 1098 else 1099 printf(", expire=%s\n", 1100 sec2str(p->expire - now.tv_sec)); 1101 } 1102 free(buf); 1103 #else 1104 struct in6_drlist dr; 1105 int s, i; 1106 struct timeval now; 1107 1108 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1109 err(1, "socket"); 1110 /* NOTREACHED */ 1111 } 1112 bzero(&dr, sizeof(dr)); 1113 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1114 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1115 err(1, "ioctl(SIOCGDRLST_IN6)"); 1116 /* NOTREACHED */ 1117 } 1118 #define DR dr.defrouter[i] 1119 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1120 struct sockaddr_in6 sin6; 1121 1122 bzero(&sin6, sizeof(sin6)); 1123 sin6.sin6_family = AF_INET6; 1124 sin6.sin6_len = sizeof(sin6); 1125 sin6.sin6_addr = DR.rtaddr; 1126 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1127 sizeof(host_buf), NULL, 0, 1128 (nflag ? NI_NUMERICHOST : 0)); 1129 1130 printf("%s if=%s", host_buf, 1131 if_indextoname(DR.if_index, ifix_buf)); 1132 printf(", flags=%s%s", 1133 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1134 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1135 gettimeofday(&now, 0); 1136 if (DR.expire == 0) 1137 printf(", expire=Never\n"); 1138 else 1139 printf(", expire=%s\n", 1140 sec2str(DR.expire - now.tv_sec)); 1141 } 1142 #undef DR 1143 close(s); 1144 #endif 1145 } 1146 1147 void 1148 plist() 1149 { 1150 #ifdef ICMPV6CTL_ND6_PRLIST 1151 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1152 char *buf; 1153 struct in6_prefix *p, *ep, *n; 1154 struct sockaddr_in6 *advrtr; 1155 size_t l; 1156 struct timeval now; 1157 const int niflags = NI_NUMERICHOST; 1158 int ninflags = nflag ? NI_NUMERICHOST : 0; 1159 char namebuf[NI_MAXHOST]; 1160 1161 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1162 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1163 /*NOTREACHED*/ 1164 } 1165 buf = malloc(l); 1166 if (!buf) { 1167 err(1, "malloc"); 1168 /*NOTREACHED*/ 1169 } 1170 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1171 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1172 /*NOTREACHED*/ 1173 } 1174 1175 ep = (struct in6_prefix *)(buf + l); 1176 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1177 advrtr = (struct sockaddr_in6 *)(p + 1); 1178 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1179 1180 if (getnameinfo((struct sockaddr *)&p->prefix, 1181 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1182 NULL, 0, niflags) != 0) 1183 strlcpy(namebuf, "?", sizeof(namebuf)); 1184 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1185 if_indextoname(p->if_index, ifix_buf)); 1186 1187 gettimeofday(&now, 0); 1188 /* 1189 * meaning of fields, especially flags, is very different 1190 * by origin. notify the difference to the users. 1191 */ 1192 printf("flags=%s%s%s%s%s", 1193 p->raflags.onlink ? "L" : "", 1194 p->raflags.autonomous ? "A" : "", 1195 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1196 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1197 #ifdef NDPRF_HOME 1198 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1199 #else 1200 "" 1201 #endif 1202 ); 1203 if (p->vltime == ND6_INFINITE_LIFETIME) 1204 printf(" vltime=infinity"); 1205 else 1206 printf(" vltime=%lu", (unsigned long)p->vltime); 1207 if (p->pltime == ND6_INFINITE_LIFETIME) 1208 printf(", pltime=infinity"); 1209 else 1210 printf(", pltime=%lu", (unsigned long)p->pltime); 1211 if (p->expire == 0) 1212 printf(", expire=Never"); 1213 else if (p->expire >= now.tv_sec) 1214 printf(", expire=%s", 1215 sec2str(p->expire - now.tv_sec)); 1216 else 1217 printf(", expired"); 1218 printf(", ref=%d", p->refcnt); 1219 printf("\n"); 1220 /* 1221 * "advertising router" list is meaningful only if the prefix 1222 * information is from RA. 1223 */ 1224 if (p->advrtrs) { 1225 int j; 1226 struct sockaddr_in6 *sin6; 1227 1228 sin6 = advrtr; 1229 printf(" advertised by\n"); 1230 for (j = 0; j < p->advrtrs; j++) { 1231 struct in6_nbrinfo *nbi; 1232 1233 if (getnameinfo((struct sockaddr *)sin6, 1234 sin6->sin6_len, namebuf, sizeof(namebuf), 1235 NULL, 0, ninflags) != 0) 1236 strlcpy(namebuf, "?", sizeof(namebuf)); 1237 printf(" %s", namebuf); 1238 1239 nbi = getnbrinfo(&sin6->sin6_addr, 1240 p->if_index, 0); 1241 if (nbi) { 1242 switch (nbi->state) { 1243 case ND6_LLINFO_REACHABLE: 1244 case ND6_LLINFO_STALE: 1245 case ND6_LLINFO_DELAY: 1246 case ND6_LLINFO_PROBE: 1247 printf(" (reachable)\n"); 1248 break; 1249 default: 1250 printf(" (unreachable)\n"); 1251 } 1252 } else 1253 printf(" (no neighbor state)\n"); 1254 sin6++; 1255 } 1256 } else 1257 printf(" No advertising router\n"); 1258 } 1259 free(buf); 1260 #else 1261 struct in6_prlist pr; 1262 int s, i; 1263 struct timeval now; 1264 1265 gettimeofday(&now, 0); 1266 1267 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1268 err(1, "socket"); 1269 /* NOTREACHED */ 1270 } 1271 bzero(&pr, sizeof(pr)); 1272 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1273 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1274 err(1, "ioctl(SIOCGPRLST_IN6)"); 1275 /* NOTREACHED */ 1276 } 1277 #define PR pr.prefix[i] 1278 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1279 struct sockaddr_in6 p6; 1280 char namebuf[NI_MAXHOST]; 1281 int niflags; 1282 1283 #ifdef NDPRF_ONLINK 1284 p6 = PR.prefix; 1285 #else 1286 memset(&p6, 0, sizeof(p6)); 1287 p6.sin6_family = AF_INET6; 1288 p6.sin6_len = sizeof(p6); 1289 p6.sin6_addr = PR.prefix; 1290 #endif 1291 niflags = NI_NUMERICHOST; 1292 if (getnameinfo((struct sockaddr *)&p6, 1293 sizeof(p6), namebuf, sizeof(namebuf), 1294 NULL, 0, niflags)) { 1295 warnx("getnameinfo failed"); 1296 continue; 1297 } 1298 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1299 if_indextoname(PR.if_index, ifix_buf)); 1300 1301 gettimeofday(&now, 0); 1302 /* 1303 * meaning of fields, especially flags, is very different 1304 * by origin. notify the difference to the users. 1305 */ 1306 #if 0 1307 printf(" %s", 1308 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1309 #endif 1310 #ifdef NDPRF_ONLINK 1311 printf("flags=%s%s%s%s%s", 1312 PR.raflags.onlink ? "L" : "", 1313 PR.raflags.autonomous ? "A" : "", 1314 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1315 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1316 #ifdef NDPRF_HOME 1317 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1318 #else 1319 "" 1320 #endif 1321 ); 1322 #else 1323 printf("flags=%s%s", 1324 PR.raflags.onlink ? "L" : "", 1325 PR.raflags.autonomous ? "A" : ""); 1326 #endif 1327 if (PR.vltime == ND6_INFINITE_LIFETIME) 1328 printf(" vltime=infinity"); 1329 else 1330 printf(" vltime=%lu", PR.vltime); 1331 if (PR.pltime == ND6_INFINITE_LIFETIME) 1332 printf(", pltime=infinity"); 1333 else 1334 printf(", pltime=%lu", PR.pltime); 1335 if (PR.expire == 0) 1336 printf(", expire=Never"); 1337 else if (PR.expire >= now.tv_sec) 1338 printf(", expire=%s", 1339 sec2str(PR.expire - now.tv_sec)); 1340 else 1341 printf(", expired"); 1342 #ifdef NDPRF_ONLINK 1343 printf(", ref=%d", PR.refcnt); 1344 #endif 1345 #if 0 1346 switch (PR.origin) { 1347 case PR_ORIG_RA: 1348 printf(", origin=RA"); 1349 break; 1350 case PR_ORIG_RR: 1351 printf(", origin=RR"); 1352 break; 1353 case PR_ORIG_STATIC: 1354 printf(", origin=static"); 1355 break; 1356 case PR_ORIG_KERNEL: 1357 printf(", origin=kernel"); 1358 break; 1359 default: 1360 printf(", origin=?"); 1361 break; 1362 } 1363 #endif 1364 printf("\n"); 1365 /* 1366 * "advertising router" list is meaningful only if the prefix 1367 * information is from RA. 1368 */ 1369 if (0 && /* prefix origin is almost obsolted */ 1370 PR.origin != PR_ORIG_RA) 1371 ; 1372 else if (PR.advrtrs) { 1373 int j; 1374 printf(" advertised by\n"); 1375 for (j = 0; j < PR.advrtrs; j++) { 1376 struct sockaddr_in6 sin6; 1377 struct in6_nbrinfo *nbi; 1378 1379 bzero(&sin6, sizeof(sin6)); 1380 sin6.sin6_family = AF_INET6; 1381 sin6.sin6_len = sizeof(sin6); 1382 sin6.sin6_addr = PR.advrtr[j]; 1383 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1384 getnameinfo((struct sockaddr *)&sin6, 1385 sin6.sin6_len, host_buf, 1386 sizeof(host_buf), NULL, 0, 1387 (nflag ? NI_NUMERICHOST : 0)); 1388 printf(" %s", host_buf); 1389 1390 nbi = getnbrinfo(&sin6.sin6_addr, 1391 PR.if_index, 0); 1392 if (nbi) { 1393 switch (nbi->state) { 1394 case ND6_LLINFO_REACHABLE: 1395 case ND6_LLINFO_STALE: 1396 case ND6_LLINFO_DELAY: 1397 case ND6_LLINFO_PROBE: 1398 printf(" (reachable)\n"); 1399 break; 1400 default: 1401 printf(" (unreachable)\n"); 1402 } 1403 } else 1404 printf(" (no neighbor state)\n"); 1405 } 1406 if (PR.advrtrs > DRLSTSIZ) 1407 printf(" and %d routers\n", 1408 PR.advrtrs - DRLSTSIZ); 1409 } else 1410 printf(" No advertising router\n"); 1411 } 1412 #undef PR 1413 close(s); 1414 #endif 1415 } 1416 1417 void 1418 pfx_flush() 1419 { 1420 char dummyif[IFNAMSIZ+8]; 1421 int s; 1422 1423 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1424 err(1, "socket"); 1425 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1426 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1427 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1428 } 1429 1430 void 1431 rtr_flush() 1432 { 1433 char dummyif[IFNAMSIZ+8]; 1434 int s; 1435 1436 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1437 err(1, "socket"); 1438 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1439 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1440 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1441 1442 close(s); 1443 } 1444 1445 void 1446 harmonize_rtr() 1447 { 1448 char dummyif[IFNAMSIZ+8]; 1449 int s; 1450 1451 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1452 err(1, "socket"); 1453 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1454 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1455 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1456 1457 close(s); 1458 } 1459 1460 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1461 static void 1462 setdefif(char *ifname) 1463 { 1464 struct in6_ndifreq ndifreq; 1465 unsigned int ifindex; 1466 1467 if (strcasecmp(ifname, "delete") == 0) 1468 ifindex = 0; 1469 else { 1470 if ((ifindex = if_nametoindex(ifname)) == 0) 1471 err(1, "failed to resolve i/f index for %s", ifname); 1472 } 1473 1474 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1475 err(1, "socket"); 1476 1477 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1478 ndifreq.ifindex = ifindex; 1479 1480 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1481 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1482 1483 close(s); 1484 } 1485 1486 static void 1487 getdefif() 1488 { 1489 struct in6_ndifreq ndifreq; 1490 char ifname[IFNAMSIZ+8]; 1491 1492 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1493 err(1, "socket"); 1494 1495 memset(&ndifreq, 0, sizeof(ndifreq)); 1496 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1497 1498 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1499 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1500 1501 if (ndifreq.ifindex == 0) 1502 printf("No default interface.\n"); 1503 else { 1504 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1505 err(1, "failed to resolve ifname for index %lu", 1506 ndifreq.ifindex); 1507 printf("ND default interface = %s\n", ifname); 1508 } 1509 1510 close(s); 1511 } 1512 #endif 1513 1514 static char * 1515 sec2str(time_t total) 1516 { 1517 static char result[256]; 1518 int days, hours, mins, secs; 1519 int first = 1; 1520 char *p = result; 1521 char *ep = &result[sizeof(result)]; 1522 int n; 1523 1524 days = total / 3600 / 24; 1525 hours = (total / 3600) % 24; 1526 mins = (total / 60) % 60; 1527 secs = total % 60; 1528 1529 if (days) { 1530 first = 0; 1531 n = snprintf(p, ep - p, "%dd", days); 1532 if (n < 0 || n >= ep - p) 1533 return "?"; 1534 p += n; 1535 } 1536 if (!first || hours) { 1537 first = 0; 1538 n = snprintf(p, ep - p, "%dh", hours); 1539 if (n < 0 || n >= ep - p) 1540 return "?"; 1541 p += n; 1542 } 1543 if (!first || mins) { 1544 first = 0; 1545 n = snprintf(p, ep - p, "%dm", mins); 1546 if (n < 0 || n >= ep - p) 1547 return "?"; 1548 p += n; 1549 } 1550 snprintf(p, ep - p, "%ds", secs); 1551 1552 return(result); 1553 } 1554 1555 /* 1556 * Print the timestamp 1557 * from tcpdump/util.c 1558 */ 1559 static void 1560 ts_print(const struct timeval *tvp) 1561 { 1562 int s; 1563 1564 /* Default */ 1565 s = (tvp->tv_sec + thiszone) % 86400; 1566 (void)printf("%02d:%02d:%02d.%06u ", 1567 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1568 } 1569 1570 #undef NEXTADDR 1571