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 time_t expire_time; 371 int flags, found_entry; 372 struct { 373 struct rt_msghdr m_rtm; 374 char m_space[512]; 375 } m_rtmsg; 376 377 /* 378 * Set an individual neighbor cache entry 379 */ 380 int 381 set(argc, argv) 382 int argc; 383 char **argv; 384 { 385 register struct sockaddr_in6 *sin = &sin_m; 386 register struct sockaddr_dl *sdl; 387 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 388 struct addrinfo hints, *res; 389 int gai_error; 390 u_char *ea; 391 char *host = argv[0], *eaddr = argv[1]; 392 393 getsocket(); 394 argc -= 2; 395 argv += 2; 396 sdl_m = blank_sdl; 397 sin_m = blank_sin; 398 399 bzero(&hints, sizeof(hints)); 400 hints.ai_family = AF_INET6; 401 gai_error = getaddrinfo(host, NULL, &hints, &res); 402 if (gai_error) { 403 fprintf(stderr, "ndp: %s: %s\n", host, 404 gai_strerror(gai_error)); 405 return 1; 406 } 407 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 408 sin->sin6_scope_id = 409 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 410 ea = (u_char *)LLADDR(&sdl_m); 411 if (ndp_ether_aton(eaddr, ea) == 0) 412 sdl_m.sdl_alen = 6; 413 flags = expire_time = 0; 414 while (argc-- > 0) { 415 if (strncmp(argv[0], "temp", 4) == 0) { 416 struct timeval now; 417 418 gettimeofday(&now, 0); 419 expire_time = now.tv_sec + 20 * 60; 420 } else if (strncmp(argv[0], "proxy", 5) == 0) 421 flags |= RTF_ANNOUNCE; 422 argv++; 423 } 424 if (rtmsg(RTM_GET) < 0) { 425 errx(1, "RTM_GET(%s) failed", host); 426 /* NOTREACHED */ 427 } 428 sin = (struct sockaddr_in6 *)(rtm + 1); 429 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 430 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 431 if (sdl->sdl_family == AF_LINK && 432 !(rtm->rtm_flags & RTF_GATEWAY)) { 433 switch (sdl->sdl_type) { 434 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 435 case IFT_ISO88024: case IFT_ISO88025: 436 case IFT_L2VLAN: case IFT_BRIDGE: 437 goto overwrite; 438 } 439 } 440 fprintf(stderr, "set: cannot configure a new entry\n"); 441 return 1; 442 } 443 444 overwrite: 445 if (sdl->sdl_family != AF_LINK) { 446 printf("cannot intuit interface index and type for %s\n", host); 447 return (1); 448 } 449 sdl_m.sdl_type = sdl->sdl_type; 450 sdl_m.sdl_index = sdl->sdl_index; 451 return (rtmsg(RTM_ADD)); 452 } 453 454 /* 455 * Display an individual neighbor cache entry 456 */ 457 void 458 get(host) 459 char *host; 460 { 461 struct sockaddr_in6 *sin = &sin_m; 462 struct addrinfo hints, *res; 463 int gai_error; 464 465 sin_m = blank_sin; 466 bzero(&hints, sizeof(hints)); 467 hints.ai_family = AF_INET6; 468 gai_error = getaddrinfo(host, NULL, &hints, &res); 469 if (gai_error) { 470 fprintf(stderr, "ndp: %s: %s\n", host, 471 gai_strerror(gai_error)); 472 return; 473 } 474 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 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(host) 490 char *host; 491 { 492 struct sockaddr_in6 *sin = &sin_m; 493 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 494 register char *cp = m_rtmsg.m_space; 495 struct sockaddr_dl *sdl; 496 struct addrinfo hints, *res; 497 int gai_error; 498 499 getsocket(); 500 sin_m = blank_sin; 501 502 bzero(&hints, sizeof(hints)); 503 hints.ai_family = AF_INET6; 504 gai_error = getaddrinfo(host, NULL, &hints, &res); 505 if (gai_error) { 506 fprintf(stderr, "ndp: %s: %s\n", host, 507 gai_strerror(gai_error)); 508 return 1; 509 } 510 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 511 sin->sin6_scope_id = 512 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 513 if (rtmsg(RTM_GET) < 0) { 514 errx(1, "RTM_GET(%s) failed", host); 515 /* NOTREACHED */ 516 } 517 sin = (struct sockaddr_in6 *)(rtm + 1); 518 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 519 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 520 if (sdl->sdl_family == AF_LINK && 521 !(rtm->rtm_flags & RTF_GATEWAY)) { 522 goto delete; 523 } 524 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 525 return 1; 526 } 527 528 delete: 529 if (sdl->sdl_family != AF_LINK) { 530 printf("cannot locate %s\n", host); 531 return (1); 532 } 533 /* 534 * need to reinit the field because it has rt_key 535 * but we want the actual address 536 */ 537 NEXTADDR(RTA_DST, sin_m); 538 rtm->rtm_flags |= RTF_LLDATA; 539 if (rtmsg(RTM_DELETE) == 0) { 540 getnameinfo((struct sockaddr *)sin, 541 sin->sin6_len, host_buf, 542 sizeof(host_buf), NULL, 0, 543 (nflag ? NI_NUMERICHOST : 0)); 544 printf("%s (%s) deleted\n", host, host_buf); 545 } 546 547 return 0; 548 } 549 550 #define W_ADDR 36 551 #define W_LL 17 552 #define W_IF 6 553 554 /* 555 * Dump the entire neighbor cache 556 */ 557 void 558 dump(addr, cflag) 559 struct in6_addr *addr; 560 int cflag; 561 { 562 int mib[6]; 563 size_t needed; 564 char *lim, *buf, *next; 565 struct rt_msghdr *rtm; 566 struct sockaddr_in6 *sin; 567 struct sockaddr_dl *sdl; 568 extern int h_errno; 569 struct in6_nbrinfo *nbi; 570 struct timeval now; 571 int addrwidth; 572 int llwidth; 573 int ifwidth; 574 char flgbuf[8]; 575 char *ifname; 576 577 /* Print header */ 578 if (!tflag && !cflag) 579 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 580 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 581 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 582 583 again:; 584 mib[0] = CTL_NET; 585 mib[1] = PF_ROUTE; 586 mib[2] = 0; 587 mib[3] = AF_INET6; 588 mib[4] = NET_RT_FLAGS; 589 #ifdef RTF_LLINFO 590 mib[5] = RTF_LLINFO; 591 #else 592 mib[5] = 0; 593 #endif 594 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 595 err(1, "sysctl(PF_ROUTE estimate)"); 596 if (needed > 0) { 597 if ((buf = malloc(needed)) == NULL) 598 err(1, "malloc"); 599 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 600 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 601 lim = buf + needed; 602 } else 603 buf = lim = NULL; 604 605 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 606 int isrouter = 0, prbs = 0; 607 608 rtm = (struct rt_msghdr *)next; 609 sin = (struct sockaddr_in6 *)(rtm + 1); 610 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 611 612 /* 613 * Some OSes can produce a route that has the LINK flag but 614 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 615 * and BSD/OS, where xx is not the interface identifier on 616 * lo0). Such routes entry would annoy getnbrinfo() below, 617 * so we skip them. 618 * XXX: such routes should have the GATEWAY flag, not the 619 * LINK flag. However, there is rotten routing software 620 * that advertises all routes that have the GATEWAY flag. 621 * Thus, KAME kernel intentionally does not set the LINK flag. 622 * What is to be fixed is not ndp, but such routing software 623 * (and the kernel workaround)... 624 */ 625 if (sdl->sdl_family != AF_LINK) 626 continue; 627 628 if (!(rtm->rtm_flags & RTF_HOST)) 629 continue; 630 631 if (addr) { 632 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 633 continue; 634 found_entry = 1; 635 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 636 continue; 637 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 638 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 639 /* XXX: should scope id be filled in the kernel? */ 640 if (sin->sin6_scope_id == 0) 641 sin->sin6_scope_id = sdl->sdl_index; 642 } 643 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 644 sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0)); 645 if (cflag) { 646 #ifdef RTF_WASCLONED 647 if (rtm->rtm_flags & RTF_WASCLONED) 648 delete(host_buf); 649 #elif defined(RTF_CLONED) 650 if (rtm->rtm_flags & RTF_CLONED) 651 delete(host_buf); 652 #else 653 delete(host_buf); 654 #endif 655 continue; 656 } 657 gettimeofday(&now, 0); 658 if (tflag) 659 ts_print(&now); 660 661 addrwidth = strlen(host_buf); 662 if (addrwidth < W_ADDR) 663 addrwidth = W_ADDR; 664 llwidth = strlen(ether_str(sdl)); 665 if (W_ADDR + W_LL - addrwidth > llwidth) 666 llwidth = W_ADDR + W_LL - addrwidth; 667 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 668 if (!ifname) 669 ifname = "?"; 670 ifwidth = strlen(ifname); 671 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 672 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 673 674 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 675 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 676 677 /* Print neighbor discovery specific informations */ 678 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 679 if (nbi) { 680 if (nbi->expire > now.tv_sec) { 681 printf(" %-9.9s", 682 sec2str(nbi->expire - now.tv_sec)); 683 } else if (nbi->expire == 0) 684 printf(" %-9.9s", "permanent"); 685 else 686 printf(" %-9.9s", "expired"); 687 688 switch (nbi->state) { 689 case ND6_LLINFO_NOSTATE: 690 printf(" N"); 691 break; 692 #ifdef ND6_LLINFO_WAITDELETE 693 case ND6_LLINFO_WAITDELETE: 694 printf(" W"); 695 break; 696 #endif 697 case ND6_LLINFO_INCOMPLETE: 698 printf(" I"); 699 break; 700 case ND6_LLINFO_REACHABLE: 701 printf(" R"); 702 break; 703 case ND6_LLINFO_STALE: 704 printf(" S"); 705 break; 706 case ND6_LLINFO_DELAY: 707 printf(" D"); 708 break; 709 case ND6_LLINFO_PROBE: 710 printf(" P"); 711 break; 712 default: 713 printf(" ?"); 714 break; 715 } 716 717 isrouter = nbi->isrouter; 718 prbs = nbi->asked; 719 } else { 720 warnx("failed to get neighbor information"); 721 printf(" "); 722 } 723 724 /* 725 * other flags. R: router, P: proxy, W: ?? 726 */ 727 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 728 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 729 isrouter ? "R" : "", 730 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 731 } else { 732 sin = (struct sockaddr_in6 *) 733 (sdl->sdl_len + (char *)sdl); 734 #if 0 /* W and P are mystery even for us */ 735 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 736 isrouter ? "R" : "", 737 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 738 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 739 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 740 #else 741 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 742 isrouter ? "R" : "", 743 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 744 #endif 745 } 746 printf(" %s", flgbuf); 747 748 if (prbs) 749 printf(" %d", prbs); 750 751 printf("\n"); 752 } 753 if (buf != NULL) 754 free(buf); 755 756 if (repeat) { 757 printf("\n"); 758 fflush(stdout); 759 sleep(repeat); 760 goto again; 761 } 762 } 763 764 static struct in6_nbrinfo * 765 getnbrinfo(addr, ifindex, warning) 766 struct in6_addr *addr; 767 int ifindex; 768 int warning; 769 { 770 static struct in6_nbrinfo nbi; 771 int s; 772 773 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 774 err(1, "socket"); 775 776 bzero(&nbi, sizeof(nbi)); 777 if_indextoname(ifindex, nbi.ifname); 778 nbi.addr = *addr; 779 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 780 if (warning) 781 warn("ioctl(SIOCGNBRINFO_IN6)"); 782 close(s); 783 return(NULL); 784 } 785 786 close(s); 787 return(&nbi); 788 } 789 790 static char * 791 ether_str(struct sockaddr_dl *sdl) 792 { 793 static char hbuf[NI_MAXHOST]; 794 char *cp; 795 796 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 797 strlcpy(hbuf, ether_ntoa((struct ether_addr *)LLADDR(sdl)), 798 sizeof(hbuf)); 799 } else if (sdl->sdl_alen) { 800 int n = sdl->sdl_nlen > 0 ? sdl->sdl_nlen + 1 : 0; 801 snprintf(hbuf, sizeof(hbuf), "%s", link_ntoa(sdl) + n); 802 } else 803 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 804 805 return(hbuf); 806 } 807 808 int 809 ndp_ether_aton(a, n) 810 char *a; 811 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() 828 { 829 printf("usage: ndp [-nt] hostname\n"); 830 printf(" ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n"); 831 printf(" ndp [-nt] -A wait\n"); 832 printf(" ndp [-nt] -d hostname\n"); 833 printf(" ndp [-nt] -f filename\n"); 834 printf(" ndp [-nt] -i interface [flags...]\n"); 835 #ifdef SIOCSDEFIFACE_IN6 836 printf(" ndp [-nt] -I [interface|delete]\n"); 837 #endif 838 printf(" ndp [-nt] -s nodename etheraddr [temp] [proxy]\n"); 839 exit(1); 840 } 841 842 int 843 rtmsg(cmd) 844 int cmd; 845 { 846 static int seq; 847 int rlen; 848 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 849 register char *cp = m_rtmsg.m_space; 850 register int l; 851 852 errno = 0; 853 if (cmd == RTM_DELETE) 854 goto doit; 855 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 856 rtm->rtm_flags = flags; 857 rtm->rtm_version = RTM_VERSION; 858 859 switch (cmd) { 860 default: 861 fprintf(stderr, "ndp: internal wrong cmd\n"); 862 exit(1); 863 case RTM_ADD: 864 rtm->rtm_addrs |= RTA_GATEWAY; 865 if (expire_time) { 866 rtm->rtm_rmx.rmx_expire = expire_time; 867 rtm->rtm_inits = RTV_EXPIRE; 868 } 869 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA); 870 #if 0 /* we don't support ipv6addr/128 type proxying */ 871 if (rtm->rtm_flags & RTF_ANNOUNCE) { 872 rtm->rtm_flags &= ~RTF_HOST; 873 rtm->rtm_addrs |= RTA_NETMASK; 874 } 875 #endif 876 /* FALLTHROUGH */ 877 case RTM_GET: 878 rtm->rtm_addrs |= RTA_DST; 879 } 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_seq != seq || rtm->rtm_pid != pid)); 902 if (l < 0) 903 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 904 strerror(errno)); 905 return (0); 906 } 907 908 void 909 ifinfo(ifname, argc, argv) 910 char *ifname; 911 int argc; 912 char **argv; 913 { 914 struct in6_ndireq nd; 915 int i, s; 916 u_int32_t newflags; 917 #ifdef IPV6CTL_USETEMPADDR 918 u_int8_t nullbuf[8]; 919 #endif 920 921 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 922 err(1, "socket"); 923 /* NOTREACHED */ 924 } 925 bzero(&nd, sizeof(nd)); 926 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 927 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 928 err(1, "ioctl(SIOCGIFINFO_IN6)"); 929 /* NOTREACHED */ 930 } 931 #define ND nd.ndi 932 newflags = ND.flags; 933 for (i = 0; i < argc; i++) { 934 int clear = 0; 935 char *cp = argv[i]; 936 937 if (*cp == '-') { 938 clear = 1; 939 cp++; 940 } 941 942 #define SETFLAG(s, f) \ 943 do {\ 944 if (strcmp(cp, (s)) == 0) {\ 945 if (clear)\ 946 newflags &= ~(f);\ 947 else\ 948 newflags |= (f);\ 949 }\ 950 } while (0) 951 /* 952 * XXX: this macro is not 100% correct, in that it matches "nud" against 953 * "nudbogus". But we just let it go since this is minor. 954 */ 955 #define SETVALUE(f, v) \ 956 do { \ 957 char *valptr; \ 958 unsigned long newval; \ 959 v = 0; /* unspecified */ \ 960 if (strncmp(cp, f, strlen(f)) == 0) { \ 961 valptr = strchr(cp, '='); \ 962 if (valptr == NULL) \ 963 err(1, "syntax error in %s field", (f)); \ 964 errno = 0; \ 965 newval = strtoul(++valptr, NULL, 0); \ 966 if (errno) \ 967 err(1, "syntax error in %s's value", (f)); \ 968 v = newval; \ 969 } \ 970 } while (0) 971 972 SETFLAG("disabled", ND6_IFF_IFDISABLED); 973 SETFLAG("nud", ND6_IFF_PERFORMNUD); 974 #ifdef ND6_IFF_ACCEPT_RTADV 975 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 976 #endif 977 #ifdef ND6_IFF_AUTO_LINKLOCAL 978 SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL); 979 #endif 980 #ifdef ND6_IFF_NO_PREFER_IFACE 981 SETFLAG("no_prefer_iface", ND6_IFF_NO_PREFER_IFACE); 982 #endif 983 SETVALUE("basereachable", ND.basereachable); 984 SETVALUE("retrans", ND.retrans); 985 SETVALUE("curhlim", ND.chlim); 986 987 ND.flags = newflags; 988 if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) { 989 err(1, "ioctl(SIOCSIFINFO_IN6)"); 990 /* NOTREACHED */ 991 } 992 #undef SETFLAG 993 #undef SETVALUE 994 } 995 996 if (!ND.initialized) { 997 errx(1, "%s: not initialized yet", ifname); 998 /* NOTREACHED */ 999 } 1000 1001 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 1002 err(1, "ioctl(SIOCGIFINFO_IN6)"); 1003 /* NOTREACHED */ 1004 } 1005 printf("linkmtu=%d", ND.linkmtu); 1006 printf(", maxmtu=%d", ND.maxmtu); 1007 printf(", curhlim=%d", ND.chlim); 1008 printf(", basereachable=%ds%dms", 1009 ND.basereachable / 1000, ND.basereachable % 1000); 1010 printf(", reachable=%ds", ND.reachable); 1011 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 1012 #ifdef IPV6CTL_USETEMPADDR 1013 memset(nullbuf, 0, sizeof(nullbuf)); 1014 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 1015 int j; 1016 u_int8_t *rbuf; 1017 1018 for (i = 0; i < 3; i++) { 1019 switch (i) { 1020 case 0: 1021 printf("\nRandom seed(0): "); 1022 rbuf = ND.randomseed0; 1023 break; 1024 case 1: 1025 printf("\nRandom seed(1): "); 1026 rbuf = ND.randomseed1; 1027 break; 1028 case 2: 1029 printf("\nRandom ID: "); 1030 rbuf = ND.randomid; 1031 break; 1032 default: 1033 errx(1, "impossible case for tempaddr display"); 1034 } 1035 for (j = 0; j < 8; j++) 1036 printf("%02x", rbuf[j]); 1037 } 1038 } 1039 #endif 1040 if (ND.flags) { 1041 printf("\nFlags: "); 1042 #ifdef ND6_IFF_IFDISABLED 1043 if ((ND.flags & ND6_IFF_IFDISABLED)) 1044 printf("disabled "); 1045 #endif 1046 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1047 printf("nud "); 1048 #ifdef ND6_IFF_ACCEPT_RTADV 1049 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1050 printf("accept_rtadv "); 1051 #endif 1052 #ifdef ND6_IFF_AUTO_LINKLOCAL 1053 if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL)) 1054 printf("auto_linklocal "); 1055 #endif 1056 #ifdef ND6_IFF_NO_PREFER_IFACE 1057 if ((ND.flags & ND6_IFF_NO_PREFER_IFACE)) 1058 printf("no_prefer_iface "); 1059 #endif 1060 } 1061 putc('\n', stdout); 1062 #undef ND 1063 1064 close(s); 1065 } 1066 1067 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1068 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1069 #endif 1070 1071 void 1072 rtrlist() 1073 { 1074 #ifdef ICMPV6CTL_ND6_DRLIST 1075 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1076 char *buf; 1077 struct in6_defrouter *p, *ep; 1078 size_t l; 1079 struct timeval now; 1080 1081 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1082 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1083 /*NOTREACHED*/ 1084 } 1085 if (l == 0) 1086 return; 1087 buf = malloc(l); 1088 if (!buf) { 1089 err(1, "malloc"); 1090 /*NOTREACHED*/ 1091 } 1092 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1093 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1094 /*NOTREACHED*/ 1095 } 1096 1097 ep = (struct in6_defrouter *)(buf + l); 1098 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1099 int rtpref; 1100 1101 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1102 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1103 (nflag ? NI_NUMERICHOST : 0)) != 0) 1104 strlcpy(host_buf, "?", sizeof(host_buf)); 1105 1106 printf("%s if=%s", host_buf, 1107 if_indextoname(p->if_index, ifix_buf)); 1108 printf(", flags=%s%s", 1109 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1110 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1111 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1112 printf(", pref=%s", rtpref_str[rtpref]); 1113 1114 gettimeofday(&now, 0); 1115 if (p->expire == 0) 1116 printf(", expire=Never\n"); 1117 else 1118 printf(", expire=%s\n", 1119 sec2str(p->expire - now.tv_sec)); 1120 } 1121 free(buf); 1122 #else 1123 struct in6_drlist dr; 1124 int s, i; 1125 struct timeval now; 1126 1127 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1128 err(1, "socket"); 1129 /* NOTREACHED */ 1130 } 1131 bzero(&dr, sizeof(dr)); 1132 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1133 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1134 err(1, "ioctl(SIOCGDRLST_IN6)"); 1135 /* NOTREACHED */ 1136 } 1137 #define DR dr.defrouter[i] 1138 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1139 struct sockaddr_in6 sin6; 1140 1141 bzero(&sin6, sizeof(sin6)); 1142 sin6.sin6_family = AF_INET6; 1143 sin6.sin6_len = sizeof(sin6); 1144 sin6.sin6_addr = DR.rtaddr; 1145 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1146 sizeof(host_buf), NULL, 0, 1147 (nflag ? NI_NUMERICHOST : 0)); 1148 1149 printf("%s if=%s", host_buf, 1150 if_indextoname(DR.if_index, ifix_buf)); 1151 printf(", flags=%s%s", 1152 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1153 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1154 gettimeofday(&now, 0); 1155 if (DR.expire == 0) 1156 printf(", expire=Never\n"); 1157 else 1158 printf(", expire=%s\n", 1159 sec2str(DR.expire - now.tv_sec)); 1160 } 1161 #undef DR 1162 close(s); 1163 #endif 1164 } 1165 1166 void 1167 plist() 1168 { 1169 #ifdef ICMPV6CTL_ND6_PRLIST 1170 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1171 char *buf; 1172 struct in6_prefix *p, *ep, *n; 1173 struct sockaddr_in6 *advrtr; 1174 size_t l; 1175 struct timeval now; 1176 const int niflags = NI_NUMERICHOST; 1177 int ninflags = nflag ? NI_NUMERICHOST : 0; 1178 char namebuf[NI_MAXHOST]; 1179 1180 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1181 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1182 /*NOTREACHED*/ 1183 } 1184 buf = malloc(l); 1185 if (!buf) { 1186 err(1, "malloc"); 1187 /*NOTREACHED*/ 1188 } 1189 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1190 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1191 /*NOTREACHED*/ 1192 } 1193 1194 ep = (struct in6_prefix *)(buf + l); 1195 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1196 advrtr = (struct sockaddr_in6 *)(p + 1); 1197 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1198 1199 if (getnameinfo((struct sockaddr *)&p->prefix, 1200 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1201 NULL, 0, niflags) != 0) 1202 strlcpy(namebuf, "?", sizeof(namebuf)); 1203 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1204 if_indextoname(p->if_index, ifix_buf)); 1205 1206 gettimeofday(&now, 0); 1207 /* 1208 * meaning of fields, especially flags, is very different 1209 * by origin. notify the difference to the users. 1210 */ 1211 printf("flags=%s%s%s%s%s", 1212 p->raflags.onlink ? "L" : "", 1213 p->raflags.autonomous ? "A" : "", 1214 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1215 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1216 #ifdef NDPRF_HOME 1217 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1218 #else 1219 "" 1220 #endif 1221 ); 1222 if (p->vltime == ND6_INFINITE_LIFETIME) 1223 printf(" vltime=infinity"); 1224 else 1225 printf(" vltime=%lu", (unsigned long)p->vltime); 1226 if (p->pltime == ND6_INFINITE_LIFETIME) 1227 printf(", pltime=infinity"); 1228 else 1229 printf(", pltime=%lu", (unsigned long)p->pltime); 1230 if (p->expire == 0) 1231 printf(", expire=Never"); 1232 else if (p->expire >= now.tv_sec) 1233 printf(", expire=%s", 1234 sec2str(p->expire - now.tv_sec)); 1235 else 1236 printf(", expired"); 1237 printf(", ref=%d", p->refcnt); 1238 printf("\n"); 1239 /* 1240 * "advertising router" list is meaningful only if the prefix 1241 * information is from RA. 1242 */ 1243 if (p->advrtrs) { 1244 int j; 1245 struct sockaddr_in6 *sin6; 1246 1247 sin6 = advrtr; 1248 printf(" advertised by\n"); 1249 for (j = 0; j < p->advrtrs; j++) { 1250 struct in6_nbrinfo *nbi; 1251 1252 if (getnameinfo((struct sockaddr *)sin6, 1253 sin6->sin6_len, namebuf, sizeof(namebuf), 1254 NULL, 0, ninflags) != 0) 1255 strlcpy(namebuf, "?", sizeof(namebuf)); 1256 printf(" %s", namebuf); 1257 1258 nbi = getnbrinfo(&sin6->sin6_addr, 1259 p->if_index, 0); 1260 if (nbi) { 1261 switch (nbi->state) { 1262 case ND6_LLINFO_REACHABLE: 1263 case ND6_LLINFO_STALE: 1264 case ND6_LLINFO_DELAY: 1265 case ND6_LLINFO_PROBE: 1266 printf(" (reachable)\n"); 1267 break; 1268 default: 1269 printf(" (unreachable)\n"); 1270 } 1271 } else 1272 printf(" (no neighbor state)\n"); 1273 sin6++; 1274 } 1275 } else 1276 printf(" No advertising router\n"); 1277 } 1278 free(buf); 1279 #else 1280 struct in6_prlist pr; 1281 int s, i; 1282 struct timeval now; 1283 1284 gettimeofday(&now, 0); 1285 1286 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1287 err(1, "socket"); 1288 /* NOTREACHED */ 1289 } 1290 bzero(&pr, sizeof(pr)); 1291 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1292 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1293 err(1, "ioctl(SIOCGPRLST_IN6)"); 1294 /* NOTREACHED */ 1295 } 1296 #define PR pr.prefix[i] 1297 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1298 struct sockaddr_in6 p6; 1299 char namebuf[NI_MAXHOST]; 1300 int niflags; 1301 1302 #ifdef NDPRF_ONLINK 1303 p6 = PR.prefix; 1304 #else 1305 memset(&p6, 0, sizeof(p6)); 1306 p6.sin6_family = AF_INET6; 1307 p6.sin6_len = sizeof(p6); 1308 p6.sin6_addr = PR.prefix; 1309 #endif 1310 niflags = NI_NUMERICHOST; 1311 if (getnameinfo((struct sockaddr *)&p6, 1312 sizeof(p6), namebuf, sizeof(namebuf), 1313 NULL, 0, niflags)) { 1314 warnx("getnameinfo failed"); 1315 continue; 1316 } 1317 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1318 if_indextoname(PR.if_index, ifix_buf)); 1319 1320 gettimeofday(&now, 0); 1321 /* 1322 * meaning of fields, especially flags, is very different 1323 * by origin. notify the difference to the users. 1324 */ 1325 #if 0 1326 printf(" %s", 1327 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1328 #endif 1329 #ifdef NDPRF_ONLINK 1330 printf("flags=%s%s%s%s%s", 1331 PR.raflags.onlink ? "L" : "", 1332 PR.raflags.autonomous ? "A" : "", 1333 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1334 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1335 #ifdef NDPRF_HOME 1336 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1337 #else 1338 "" 1339 #endif 1340 ); 1341 #else 1342 printf("flags=%s%s", 1343 PR.raflags.onlink ? "L" : "", 1344 PR.raflags.autonomous ? "A" : ""); 1345 #endif 1346 if (PR.vltime == ND6_INFINITE_LIFETIME) 1347 printf(" vltime=infinity"); 1348 else 1349 printf(" vltime=%lu", PR.vltime); 1350 if (PR.pltime == ND6_INFINITE_LIFETIME) 1351 printf(", pltime=infinity"); 1352 else 1353 printf(", pltime=%lu", PR.pltime); 1354 if (PR.expire == 0) 1355 printf(", expire=Never"); 1356 else if (PR.expire >= now.tv_sec) 1357 printf(", expire=%s", 1358 sec2str(PR.expire - now.tv_sec)); 1359 else 1360 printf(", expired"); 1361 #ifdef NDPRF_ONLINK 1362 printf(", ref=%d", PR.refcnt); 1363 #endif 1364 #if 0 1365 switch (PR.origin) { 1366 case PR_ORIG_RA: 1367 printf(", origin=RA"); 1368 break; 1369 case PR_ORIG_RR: 1370 printf(", origin=RR"); 1371 break; 1372 case PR_ORIG_STATIC: 1373 printf(", origin=static"); 1374 break; 1375 case PR_ORIG_KERNEL: 1376 printf(", origin=kernel"); 1377 break; 1378 default: 1379 printf(", origin=?"); 1380 break; 1381 } 1382 #endif 1383 printf("\n"); 1384 /* 1385 * "advertising router" list is meaningful only if the prefix 1386 * information is from RA. 1387 */ 1388 if (0 && /* prefix origin is almost obsolted */ 1389 PR.origin != PR_ORIG_RA) 1390 ; 1391 else if (PR.advrtrs) { 1392 int j; 1393 printf(" advertised by\n"); 1394 for (j = 0; j < PR.advrtrs; j++) { 1395 struct sockaddr_in6 sin6; 1396 struct in6_nbrinfo *nbi; 1397 1398 bzero(&sin6, sizeof(sin6)); 1399 sin6.sin6_family = AF_INET6; 1400 sin6.sin6_len = sizeof(sin6); 1401 sin6.sin6_addr = PR.advrtr[j]; 1402 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1403 getnameinfo((struct sockaddr *)&sin6, 1404 sin6.sin6_len, host_buf, 1405 sizeof(host_buf), NULL, 0, 1406 (nflag ? NI_NUMERICHOST : 0)); 1407 printf(" %s", host_buf); 1408 1409 nbi = getnbrinfo(&sin6.sin6_addr, 1410 PR.if_index, 0); 1411 if (nbi) { 1412 switch (nbi->state) { 1413 case ND6_LLINFO_REACHABLE: 1414 case ND6_LLINFO_STALE: 1415 case ND6_LLINFO_DELAY: 1416 case ND6_LLINFO_PROBE: 1417 printf(" (reachable)\n"); 1418 break; 1419 default: 1420 printf(" (unreachable)\n"); 1421 } 1422 } else 1423 printf(" (no neighbor state)\n"); 1424 } 1425 if (PR.advrtrs > DRLSTSIZ) 1426 printf(" and %d routers\n", 1427 PR.advrtrs - DRLSTSIZ); 1428 } else 1429 printf(" No advertising router\n"); 1430 } 1431 #undef PR 1432 close(s); 1433 #endif 1434 } 1435 1436 void 1437 pfx_flush() 1438 { 1439 char dummyif[IFNAMSIZ+8]; 1440 int s; 1441 1442 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1443 err(1, "socket"); 1444 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1445 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1446 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1447 } 1448 1449 void 1450 rtr_flush() 1451 { 1452 char dummyif[IFNAMSIZ+8]; 1453 int s; 1454 1455 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1456 err(1, "socket"); 1457 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1458 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1459 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1460 1461 close(s); 1462 } 1463 1464 void 1465 harmonize_rtr() 1466 { 1467 char dummyif[IFNAMSIZ+8]; 1468 int s; 1469 1470 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1471 err(1, "socket"); 1472 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1473 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1474 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1475 1476 close(s); 1477 } 1478 1479 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1480 static void 1481 setdefif(ifname) 1482 char *ifname; 1483 { 1484 struct in6_ndifreq ndifreq; 1485 unsigned int ifindex; 1486 1487 if (strcasecmp(ifname, "delete") == 0) 1488 ifindex = 0; 1489 else { 1490 if ((ifindex = if_nametoindex(ifname)) == 0) 1491 err(1, "failed to resolve i/f index for %s", ifname); 1492 } 1493 1494 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1495 err(1, "socket"); 1496 1497 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1498 ndifreq.ifindex = ifindex; 1499 1500 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1501 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1502 1503 close(s); 1504 } 1505 1506 static void 1507 getdefif() 1508 { 1509 struct in6_ndifreq ndifreq; 1510 char ifname[IFNAMSIZ+8]; 1511 1512 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1513 err(1, "socket"); 1514 1515 memset(&ndifreq, 0, sizeof(ndifreq)); 1516 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1517 1518 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1519 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1520 1521 if (ndifreq.ifindex == 0) 1522 printf("No default interface.\n"); 1523 else { 1524 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1525 err(1, "failed to resolve ifname for index %lu", 1526 ndifreq.ifindex); 1527 printf("ND default interface = %s\n", ifname); 1528 } 1529 1530 close(s); 1531 } 1532 #endif 1533 1534 static char * 1535 sec2str(total) 1536 time_t total; 1537 { 1538 static char result[256]; 1539 int days, hours, mins, secs; 1540 int first = 1; 1541 char *p = result; 1542 char *ep = &result[sizeof(result)]; 1543 int n; 1544 1545 days = total / 3600 / 24; 1546 hours = (total / 3600) % 24; 1547 mins = (total / 60) % 60; 1548 secs = total % 60; 1549 1550 if (days) { 1551 first = 0; 1552 n = snprintf(p, ep - p, "%dd", days); 1553 if (n < 0 || n >= ep - p) 1554 return "?"; 1555 p += n; 1556 } 1557 if (!first || hours) { 1558 first = 0; 1559 n = snprintf(p, ep - p, "%dh", hours); 1560 if (n < 0 || n >= ep - p) 1561 return "?"; 1562 p += n; 1563 } 1564 if (!first || mins) { 1565 first = 0; 1566 n = snprintf(p, ep - p, "%dm", mins); 1567 if (n < 0 || n >= ep - p) 1568 return "?"; 1569 p += n; 1570 } 1571 snprintf(p, ep - p, "%ds", secs); 1572 1573 return(result); 1574 } 1575 1576 /* 1577 * Print the timestamp 1578 * from tcpdump/util.c 1579 */ 1580 static void 1581 ts_print(tvp) 1582 const struct timeval *tvp; 1583 { 1584 int s; 1585 1586 /* Default */ 1587 s = (tvp->tv_sec + thiszone) % 86400; 1588 (void)printf("%02d:%02d:%02d.%06u ", 1589 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1590 } 1591 1592 #undef NEXTADDR 1593