ndp.c revision 1.22
1 /* $NetBSD: ndp.c,v 1.22 2002/06/03 03:34:36 itojun Exp $ */ 2 /* $KAME: ndp.c,v 1.97 2002/06/03 03:31:25 itojun Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 /* 33 * Copyright (c) 1984, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Sun Microsystems, Inc. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the University of 50 * California, Berkeley and its contributors. 51 * 4. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 */ 67 68 /* 69 * Based on: 70 * "@(#) Copyright (c) 1984, 1993\n\ 71 * The Regents of the University of California. All rights reserved.\n"; 72 * 73 * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; 74 */ 75 76 /* 77 * ndp - display, set, delete and flush neighbor cache 78 */ 79 80 81 #include <sys/param.h> 82 #include <sys/file.h> 83 #include <sys/ioctl.h> 84 #include <sys/socket.h> 85 #include <sys/sysctl.h> 86 #include <sys/time.h> 87 88 #include <net/if.h> 89 #include <net/if_dl.h> 90 #include <net/if_types.h> 91 #include <net/route.h> 92 93 #include <netinet/in.h> 94 95 #include <netinet/icmp6.h> 96 #include <netinet6/in6_var.h> 97 #include <netinet6/nd6.h> 98 99 #include <arpa/inet.h> 100 101 #include <netdb.h> 102 #include <errno.h> 103 #include <nlist.h> 104 #include <stdio.h> 105 #include <string.h> 106 #include <paths.h> 107 #include <err.h> 108 #include <stdlib.h> 109 #include <fcntl.h> 110 #include <unistd.h> 111 #include <err.h> 112 #include "gmt2local.h" 113 114 /* packing rule for routing socket */ 115 #define ROUNDUP(a) \ 116 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 117 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 118 119 static pid_t pid; 120 static int nflag; 121 static int tflag; 122 static int32_t thiszone; /* time difference with gmt */ 123 static int s = -1; 124 static int repeat = 0; 125 126 char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 127 char host_buf[NI_MAXHOST]; /* getnameinfo() */ 128 char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 129 130 int main __P((int, char **)); 131 int file __P((char *)); 132 void getsocket __P((void)); 133 int set __P((int, char **)); 134 void get __P((char *)); 135 int delete __P((char *)); 136 void dump __P((struct in6_addr *, int)); 137 static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *, int, int)); 138 static char *ether_str __P((struct sockaddr_dl *)); 139 int ndp_ether_aton __P((char *, u_char *)); 140 void usage __P((void)); 141 int rtmsg __P((int)); 142 void ifinfo __P((char *, int, char **)); 143 void rtrlist __P((void)); 144 void plist __P((void)); 145 void pfx_flush __P((void)); 146 void rtrlist __P((void)); 147 void rtr_flush __P((void)); 148 void harmonize_rtr __P((void)); 149 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 150 static void getdefif __P((void)); 151 static void setdefif __P((char *)); 152 #endif 153 static char *sec2str __P((time_t)); 154 static char *ether_str __P((struct sockaddr_dl *)); 155 static void ts_print __P((const struct timeval *)); 156 157 #ifdef ICMPV6CTL_ND6_DRLIST 158 static char *rtpref_str[] = { 159 "medium", /* 00 */ 160 "high", /* 01 */ 161 "rsv", /* 10 */ 162 "low" /* 11 */ 163 }; 164 #endif 165 166 int mode = 0; 167 char *arg = NULL; 168 169 int 170 main(argc, argv) 171 int argc; 172 char **argv; 173 { 174 int ch; 175 176 pid = getpid(); 177 thiszone = gmt2local(0); 178 while ((ch = getopt(argc, argv, "acd:f:I:i:nprstA:HPR")) != -1) 179 switch (ch) { 180 case 'a': 181 case 'c': 182 case 'p': 183 case 'r': 184 case 'H': 185 case 'P': 186 case 'R': 187 case 's': 188 if (mode) { 189 usage(); 190 /*NOTREACHED*/ 191 } 192 mode = ch; 193 arg = NULL; 194 break; 195 case 'd': 196 case 'f': 197 case 'I': 198 case 'i' : 199 if (mode) { 200 usage(); 201 /*NOTREACHED*/ 202 } 203 mode = ch; 204 arg = optarg; 205 break; 206 case 'n': 207 nflag = 1; 208 break; 209 case 't': 210 tflag = 1; 211 break; 212 case 'A': 213 if (mode) { 214 usage(); 215 /*NOTREACHED*/ 216 } 217 mode = 'a'; 218 repeat = atoi(optarg); 219 if (repeat < 0) { 220 usage(); 221 /*NOTREACHED*/ 222 } 223 break; 224 default: 225 usage(); 226 } 227 228 argc -= optind; 229 argv += optind; 230 231 switch (mode) { 232 case 'a': 233 case 'c': 234 if (argc != 0) { 235 usage(); 236 /*NOTREACHED*/ 237 } 238 dump(0, mode == 'c'); 239 break; 240 case 'd': 241 if (argc != 0) { 242 usage(); 243 /*NOTREACHED*/ 244 } 245 delete(arg); 246 break; 247 case 'I': 248 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 249 if (argc != 0) { 250 usage(); 251 /*NOTREACHED*/ 252 } 253 if (strcmp(arg, "default") == 0 || if_nametoindex(arg)) 254 setdefif(arg); 255 getdefif(); /* always call it to print the result */ 256 break; 257 #else 258 errx(1, "not supported yet"); 259 /*NOTREACHED*/ 260 #endif 261 case 'p': 262 if (argc != 0) { 263 usage(); 264 /*NOTREACHED*/ 265 } 266 plist(); 267 break; 268 case 'i': 269 ifinfo(arg, argc, argv); 270 break; 271 case 'r': 272 if (argc != 0) { 273 usage(); 274 /*NOTREACHED*/ 275 } 276 rtrlist(); 277 break; 278 case 's': 279 if (argc < 2 || argc > 4) 280 usage(); 281 exit(set(argc, argv) ? 1 : 0); 282 case 'H': 283 if (argc != 0) { 284 usage(); 285 /*NOTREACHED*/ 286 } 287 harmonize_rtr(); 288 break; 289 case 'P': 290 if (argc != 0) { 291 usage(); 292 /*NOTREACHED*/ 293 } 294 pfx_flush(); 295 break; 296 case 'R': 297 if (argc != 0) { 298 usage(); 299 /*NOTREACHED*/ 300 } 301 rtr_flush(); 302 break; 303 case 0: 304 if (argc != 1) { 305 usage(); 306 /*NOTREACHED*/ 307 } 308 get(argv[0]); 309 break; 310 } 311 exit(0); 312 } 313 314 /* 315 * Process a file to set standard ndp entries 316 */ 317 int 318 file(name) 319 char *name; 320 { 321 FILE *fp; 322 int i, retval; 323 char line[100], arg[5][50], *args[5]; 324 325 if ((fp = fopen(name, "r")) == NULL) { 326 fprintf(stderr, "ndp: cannot open %s\n", name); 327 exit(1); 328 } 329 args[0] = &arg[0][0]; 330 args[1] = &arg[1][0]; 331 args[2] = &arg[2][0]; 332 args[3] = &arg[3][0]; 333 args[4] = &arg[4][0]; 334 retval = 0; 335 while(fgets(line, 100, fp) != NULL) { 336 i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2], 337 arg[3], arg[4]); 338 if (i < 2) { 339 fprintf(stderr, "ndp: bad line: %s\n", line); 340 retval = 1; 341 continue; 342 } 343 if (set(i, args)) 344 retval = 1; 345 } 346 fclose(fp); 347 return (retval); 348 } 349 350 void 351 getsocket() 352 { 353 if (s < 0) { 354 s = socket(PF_ROUTE, SOCK_RAW, 0); 355 if (s < 0) { 356 err(1, "ndp: socket"); 357 /* NOTREACHED */ 358 } 359 } 360 } 361 362 struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 363 struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 364 struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 365 int expire_time, flags, found_entry; 366 struct { 367 struct rt_msghdr m_rtm; 368 char m_space[512]; 369 } m_rtmsg; 370 371 /* 372 * Set an individual neighbor cache entry 373 */ 374 int 375 set(argc, argv) 376 int argc; 377 char **argv; 378 { 379 register struct sockaddr_in6 *sin = &sin_m; 380 register struct sockaddr_dl *sdl; 381 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 382 struct addrinfo hints, *res; 383 int gai_error; 384 u_char *ea; 385 char *host = argv[0], *eaddr = argv[1]; 386 387 getsocket(); 388 argc -= 2; 389 argv += 2; 390 sdl_m = blank_sdl; 391 sin_m = blank_sin; 392 393 bzero(&hints, sizeof(hints)); 394 hints.ai_family = AF_INET6; 395 gai_error = getaddrinfo(host, NULL, &hints, &res); 396 if (gai_error) { 397 fprintf(stderr, "ndp: %s: %s\n", host, 398 gai_strerror(gai_error)); 399 return 1; 400 } 401 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 402 #ifdef __KAME__ 403 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 404 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 405 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 406 } 407 #endif 408 ea = (u_char *)LLADDR(&sdl_m); 409 if (ndp_ether_aton(eaddr, ea) == 0) 410 sdl_m.sdl_alen = 6; 411 flags = expire_time = 0; 412 while (argc-- > 0) { 413 if (strncmp(argv[0], "temp", 4) == 0) { 414 struct timeval time; 415 416 gettimeofday(&time, 0); 417 expire_time = time.tv_sec + 20 * 60; 418 } else if (strncmp(argv[0], "proxy", 5) == 0) 419 flags |= RTF_ANNOUNCE; 420 argv++; 421 } 422 if (rtmsg(RTM_GET) < 0) { 423 errx(1, "RTM_GET(%s) failed", host); 424 /* NOTREACHED */ 425 } 426 sin = (struct sockaddr_in6 *)(rtm + 1); 427 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 428 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 429 if (sdl->sdl_family == AF_LINK && 430 (rtm->rtm_flags & RTF_LLINFO) && 431 !(rtm->rtm_flags & RTF_GATEWAY)) { 432 switch (sdl->sdl_type) { 433 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 434 case IFT_ISO88024: case IFT_ISO88025: 435 goto overwrite; 436 } 437 } 438 /* 439 * IPv4 arp command retries with sin_other = SIN_PROXY here. 440 */ 441 fprintf(stderr, "set: cannot configure a new entry\n"); 442 return 1; 443 } 444 445 overwrite: 446 if (sdl->sdl_family != AF_LINK) { 447 printf("cannot intuit interface index and type for %s\n", host); 448 return (1); 449 } 450 sdl_m.sdl_type = sdl->sdl_type; 451 sdl_m.sdl_index = sdl->sdl_index; 452 return (rtmsg(RTM_ADD)); 453 } 454 455 /* 456 * Display an individual neighbor cache entry 457 */ 458 void 459 get(host) 460 char *host; 461 { 462 struct sockaddr_in6 *sin = &sin_m; 463 struct addrinfo hints, *res; 464 int gai_error; 465 466 sin_m = blank_sin; 467 bzero(&hints, sizeof(hints)); 468 hints.ai_family = AF_INET6; 469 gai_error = getaddrinfo(host, NULL, &hints, &res); 470 if (gai_error) { 471 fprintf(stderr, "ndp: %s: %s\n", host, 472 gai_strerror(gai_error)); 473 return; 474 } 475 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 476 #ifdef __KAME__ 477 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 478 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 479 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 480 } 481 #endif 482 dump(&sin->sin6_addr, 0); 483 if (found_entry == 0) { 484 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 485 sizeof(host_buf), NULL ,0, 486 (nflag ? NI_NUMERICHOST : 0)); 487 printf("%s (%s) -- no entry\n", host, host_buf); 488 exit(1); 489 } 490 } 491 492 /* 493 * Delete a neighbor cache entry 494 */ 495 int 496 delete(host) 497 char *host; 498 { 499 struct sockaddr_in6 *sin = &sin_m; 500 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 501 struct sockaddr_dl *sdl; 502 struct addrinfo hints, *res; 503 int gai_error; 504 505 getsocket(); 506 sin_m = blank_sin; 507 508 bzero(&hints, sizeof(hints)); 509 hints.ai_family = AF_INET6; 510 gai_error = getaddrinfo(host, NULL, &hints, &res); 511 if (gai_error) { 512 fprintf(stderr, "ndp: %s: %s\n", host, 513 gai_strerror(gai_error)); 514 return 1; 515 } 516 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 517 #ifdef __KAME__ 518 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 519 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 520 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 521 } 522 #endif 523 if (rtmsg(RTM_GET) < 0) { 524 errx(1, "RTM_GET(%s) failed", host); 525 /* NOTREACHED */ 526 } 527 sin = (struct sockaddr_in6 *)(rtm + 1); 528 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 529 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 530 if (sdl->sdl_family == AF_LINK && 531 (rtm->rtm_flags & RTF_LLINFO) && 532 !(rtm->rtm_flags & RTF_GATEWAY)) { 533 goto delete; 534 } 535 /* 536 * IPv4 arp command retries with sin_other = SIN_PROXY here. 537 */ 538 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 539 return 1; 540 } 541 542 delete: 543 if (sdl->sdl_family != AF_LINK) { 544 printf("cannot locate %s\n", host); 545 return (1); 546 } 547 if (rtmsg(RTM_DELETE) == 0) { 548 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 549 550 #ifdef __KAME__ 551 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 552 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 553 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 554 } 555 #endif 556 getnameinfo((struct sockaddr *)&s6, 557 s6.sin6_len, host_buf, 558 sizeof(host_buf), NULL, 0, 559 (nflag ? NI_NUMERICHOST : 0)); 560 printf("%s (%s) deleted\n", host, host_buf); 561 } 562 563 return 0; 564 } 565 566 #define W_ADDR 36 567 #define W_LL 17 568 #define W_IF 6 569 570 /* 571 * Dump the entire neighbor cache 572 */ 573 void 574 dump(addr, cflag) 575 struct in6_addr *addr; 576 int cflag; 577 { 578 int mib[6]; 579 size_t needed; 580 char *lim, *buf, *next; 581 struct rt_msghdr *rtm; 582 struct sockaddr_in6 *sin; 583 struct sockaddr_dl *sdl; 584 extern int h_errno; 585 struct in6_nbrinfo *nbi; 586 struct timeval time; 587 int addrwidth; 588 int llwidth; 589 int ifwidth; 590 char flgbuf[8]; 591 char *ifname; 592 593 /* Print header */ 594 if (!tflag && !cflag) 595 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 596 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 597 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 598 599 again:; 600 mib[0] = CTL_NET; 601 mib[1] = PF_ROUTE; 602 mib[2] = 0; 603 mib[3] = AF_INET6; 604 mib[4] = NET_RT_FLAGS; 605 mib[5] = RTF_LLINFO; 606 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 607 err(1, "sysctl(PF_ROUTE estimate)"); 608 if (needed > 0) { 609 if ((buf = malloc(needed)) == NULL) 610 errx(1, "malloc"); 611 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 612 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 613 lim = buf + needed; 614 } else 615 buf = lim = NULL; 616 617 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 618 int isrouter = 0, prbs = 0; 619 620 rtm = (struct rt_msghdr *)next; 621 sin = (struct sockaddr_in6 *)(rtm + 1); 622 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 623 624 /* 625 * Some OSes can produce a route that has the LINK flag but 626 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 627 * and BSD/OS, where xx is not the interface identifier on 628 * lo0). Such routes entry would annoy getnbrinfo() below, 629 * so we skip them. 630 * XXX: such routes should have the GATEWAY flag, not the 631 * LINK flag. However, there is rotten routing software 632 * that advertises all routes that have the GATEWAY flag. 633 * Thus, KAME kernel intentionally does not set the LINK flag. 634 * What is to be fixed is not ndp, but such routing software 635 * (and the kernel workaround)... 636 */ 637 if (sdl->sdl_family != AF_LINK) 638 continue; 639 640 if (!(rtm->rtm_flags & RTF_HOST)) 641 continue; 642 643 if (addr) { 644 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 645 continue; 646 found_entry = 1; 647 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 648 continue; 649 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 650 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 651 /* XXX: should scope id be filled in the kernel? */ 652 if (sin->sin6_scope_id == 0) 653 sin->sin6_scope_id = sdl->sdl_index; 654 #ifdef __KAME__ 655 /* KAME specific hack; removed the embedded id */ 656 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 657 #endif 658 } 659 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 660 sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0)); 661 if (cflag) { 662 #ifdef RTF_WASCLONED 663 if (rtm->rtm_flags & RTF_WASCLONED) 664 delete(host_buf); 665 #elif defined(RTF_CLONED) 666 if (rtm->rtm_flags & RTF_CLONED) 667 delete(host_buf); 668 #else 669 delete(host_buf); 670 #endif 671 continue; 672 } 673 gettimeofday(&time, 0); 674 if (tflag) 675 ts_print(&time); 676 677 addrwidth = strlen(host_buf); 678 if (addrwidth < W_ADDR) 679 addrwidth = W_ADDR; 680 llwidth = strlen(ether_str(sdl)); 681 if (W_ADDR + W_LL - addrwidth > llwidth) 682 llwidth = W_ADDR + W_LL - addrwidth; 683 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 684 if (!ifname) 685 ifname = "?"; 686 ifwidth = strlen(ifname); 687 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 688 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 689 690 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 691 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 692 693 /* Print neighbor discovery specific informations */ 694 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 695 if (nbi) { 696 if (nbi->expire > time.tv_sec) { 697 printf(" %-9.9s", 698 sec2str(nbi->expire - time.tv_sec)); 699 } else if (nbi->expire == 0) 700 printf(" %-9.9s", "permanent"); 701 else 702 printf(" %-9.9s", "expired"); 703 704 switch (nbi->state) { 705 case ND6_LLINFO_NOSTATE: 706 printf(" N"); 707 break; 708 #ifdef ND6_LLINFO_WAITDELETE 709 case ND6_LLINFO_WAITDELETE: 710 printf(" W"); 711 break; 712 #endif 713 case ND6_LLINFO_INCOMPLETE: 714 printf(" I"); 715 break; 716 case ND6_LLINFO_REACHABLE: 717 printf(" R"); 718 break; 719 case ND6_LLINFO_STALE: 720 printf(" S"); 721 break; 722 case ND6_LLINFO_DELAY: 723 printf(" D"); 724 break; 725 case ND6_LLINFO_PROBE: 726 printf(" P"); 727 break; 728 default: 729 printf(" ?"); 730 break; 731 } 732 733 isrouter = nbi->isrouter; 734 prbs = nbi->asked; 735 } else { 736 warnx("failed to get neighbor information"); 737 printf(" "); 738 } 739 740 /* 741 * other flags. R: router, P: proxy, W: ?? 742 */ 743 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 744 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 745 isrouter ? "R" : "", 746 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 747 } else { 748 sin = (struct sockaddr_in6 *) 749 (sdl->sdl_len + (char *)sdl); 750 #if 0 /* W and P are mystery even for us */ 751 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 752 isrouter ? "R" : "", 753 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 754 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 755 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 756 #else 757 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 758 isrouter ? "R" : "", 759 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 760 #endif 761 } 762 printf(" %s", flgbuf); 763 764 if (prbs) 765 printf(" %d", prbs); 766 767 printf("\n"); 768 } 769 if (buf != NULL) 770 free(buf); 771 772 if (repeat) { 773 printf("\n"); 774 sleep(repeat); 775 goto again; 776 } 777 } 778 779 static struct in6_nbrinfo * 780 getnbrinfo(addr, ifindex, warning) 781 struct in6_addr *addr; 782 int ifindex; 783 int warning; 784 { 785 static struct in6_nbrinfo nbi; 786 int s; 787 788 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 789 err(1, "socket"); 790 791 bzero(&nbi, sizeof(nbi)); 792 if_indextoname(ifindex, nbi.ifname); 793 nbi.addr = *addr; 794 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 795 if (warning) 796 warn("ioctl(SIOCGNBRINFO_IN6)"); 797 close(s); 798 return(NULL); 799 } 800 801 close(s); 802 return(&nbi); 803 } 804 805 static char * 806 ether_str(sdl) 807 struct sockaddr_dl *sdl; 808 { 809 static char hbuf[NI_MAXHOST]; 810 811 if (sdl->sdl_alen) { 812 if (getnameinfo((struct sockaddr *)sdl, sdl->sdl_len, 813 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) 814 snprintf(hbuf, sizeof(hbuf), "<invalid>"); 815 } else 816 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 817 818 return(hbuf); 819 } 820 821 int 822 ndp_ether_aton(a, n) 823 char *a; 824 u_char *n; 825 { 826 int i, o[6]; 827 828 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 829 &o[3], &o[4], &o[5]); 830 if (i != 6) { 831 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 832 return (1); 833 } 834 for (i=0; i<6; i++) 835 n[i] = o[i]; 836 return (0); 837 } 838 839 void 840 usage() 841 { 842 printf("usage: ndp hostname\n"); 843 printf(" ndp [-nt] -a\n"); 844 printf(" ndp [-nt] -A wait\n"); 845 printf(" ndp [-nt]- c\n"); 846 printf(" ndp [-nt] -d hostname\n"); 847 printf(" ndp [-nt] -f filename\n"); 848 printf(" ndp -i interface [flags...]\n"); 849 #ifdef SIOCSDEFIFACE_IN6 850 printf(" ndp -I interface\n"); 851 printf(" ndp -I delete\n"); 852 #endif 853 printf(" ndp -p\n"); 854 printf(" ndp -r\n"); 855 printf(" ndp -s hostname ether_addr [temp] [proxy]\n"); 856 printf(" ndp -H\n"); 857 printf(" ndp -P\n"); 858 printf(" ndp -R\n"); 859 exit(1); 860 } 861 862 int 863 rtmsg(cmd) 864 int cmd; 865 { 866 static int seq; 867 int rlen; 868 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 869 register char *cp = m_rtmsg.m_space; 870 register int l; 871 872 errno = 0; 873 if (cmd == RTM_DELETE) 874 goto doit; 875 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 876 rtm->rtm_flags = flags; 877 rtm->rtm_version = RTM_VERSION; 878 879 switch (cmd) { 880 default: 881 fprintf(stderr, "ndp: internal wrong cmd\n"); 882 exit(1); 883 case RTM_ADD: 884 rtm->rtm_addrs |= RTA_GATEWAY; 885 if (expire_time) { 886 rtm->rtm_rmx.rmx_expire = expire_time; 887 rtm->rtm_inits = RTV_EXPIRE; 888 } 889 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 890 if (rtm->rtm_flags & RTF_ANNOUNCE) { 891 rtm->rtm_flags &= ~RTF_HOST; 892 rtm->rtm_flags |= RTA_NETMASK; 893 } 894 /* FALLTHROUGH */ 895 case RTM_GET: 896 rtm->rtm_addrs |= RTA_DST; 897 } 898 #define NEXTADDR(w, s) \ 899 if (rtm->rtm_addrs & (w)) { \ 900 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 901 902 NEXTADDR(RTA_DST, sin_m); 903 NEXTADDR(RTA_GATEWAY, sdl_m); 904 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 905 NEXTADDR(RTA_NETMASK, so_mask); 906 907 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 908 doit: 909 l = rtm->rtm_msglen; 910 rtm->rtm_seq = ++seq; 911 rtm->rtm_type = cmd; 912 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 913 if (errno != ESRCH || cmd != RTM_DELETE) { 914 err(1, "writing to routing socket"); 915 /* NOTREACHED */ 916 } 917 } 918 do { 919 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 920 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 921 if (l < 0) 922 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 923 strerror(errno)); 924 return (0); 925 } 926 927 void 928 ifinfo(ifname, argc, argv) 929 char *ifname; 930 int argc; 931 char **argv; 932 { 933 struct in6_ndireq nd; 934 int i, s; 935 u_int32_t newflags; 936 #ifdef IPV6CTL_USETEMPADDR 937 u_int8_t nullbuf[8]; 938 #endif 939 940 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 941 err(1, "socket"); 942 /* NOTREACHED */ 943 } 944 bzero(&nd, sizeof(nd)); 945 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 946 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 947 err(1, "ioctl(SIOCGIFINFO_IN6)"); 948 /* NOTREACHED */ 949 } 950 #define ND nd.ndi 951 newflags = ND.flags; 952 for (i = 0; i < argc; i++) { 953 int clear = 0; 954 char *cp = argv[i]; 955 956 if (*cp == '-') { 957 clear = 1; 958 cp++; 959 } 960 961 #define SETFLAG(s, f) \ 962 do {\ 963 if (strcmp(cp, (s)) == 0) {\ 964 if (clear)\ 965 newflags &= ~(f);\ 966 else\ 967 newflags |= (f);\ 968 }\ 969 } while (0) 970 SETFLAG("nud", ND6_IFF_PERFORMNUD); 971 #ifdef ND6_IFF_ACCEPT_RTADV 972 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 973 #endif 974 #ifdef ND6_IFF_PREFER_SOURCE 975 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 976 #endif 977 978 ND.flags = newflags; 979 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 980 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 981 /* NOTREACHED */ 982 } 983 #undef SETFLAG 984 } 985 986 if (!ND.initialized) { 987 errx(1, "%s: not initialized yet", ifname); 988 /* NOTREACHED */ 989 } 990 991 printf("linkmtu=%d", ND.linkmtu); 992 printf(", curhlim=%d", ND.chlim); 993 printf(", basereachable=%ds%dms", 994 ND.basereachable / 1000, ND.basereachable % 1000); 995 printf(", reachable=%ds", ND.reachable); 996 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 997 #ifdef IPV6CTL_USETEMPADDR 998 memset(nullbuf, 0, sizeof(nullbuf)); 999 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 1000 int j; 1001 u_int8_t *rbuf; 1002 1003 for (i = 0; i < 3; i++) { 1004 switch (i) { 1005 case 0: 1006 printf("\nRandom seed(0): "); 1007 rbuf = ND.randomseed0; 1008 break; 1009 case 1: 1010 printf("\nRandom seed(1): "); 1011 rbuf = ND.randomseed1; 1012 break; 1013 case 2: 1014 printf("\nRandom ID: "); 1015 rbuf = ND.randomid; 1016 break; 1017 } 1018 for (j = 0; j < 8; j++) 1019 printf("%02x", rbuf[j]); 1020 } 1021 } 1022 #endif 1023 if (ND.flags) { 1024 printf("\nFlags: "); 1025 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1026 printf("PERFORMNUD "); 1027 #ifdef ND6_IFF_ACCEPT_RTADV 1028 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1029 printf("ACCEPT_RA "); 1030 #endif 1031 #ifdef ND6_IFF_PREFER_SOURCE 1032 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1033 printf("PREFER_SRC "); 1034 #endif 1035 } 1036 putc('\n', stdout); 1037 #undef ND 1038 1039 close(s); 1040 } 1041 1042 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1043 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1044 #endif 1045 1046 void 1047 rtrlist() 1048 { 1049 #ifdef ICMPV6CTL_ND6_DRLIST 1050 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1051 char *buf; 1052 struct in6_defrouter *p, *ep; 1053 size_t l; 1054 struct timeval time; 1055 1056 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1057 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1058 /*NOTREACHED*/ 1059 } 1060 buf = malloc(l); 1061 if (!buf) { 1062 errx(1, "not enough core"); 1063 /*NOTREACHED*/ 1064 } 1065 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1066 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1067 /*NOTREACHED*/ 1068 } 1069 1070 ep = (struct in6_defrouter *)(buf + l); 1071 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1072 int rtpref; 1073 1074 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1075 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1076 (nflag ? NI_NUMERICHOST : 0)) != 0) 1077 strlcpy(host_buf, "?", sizeof(host_buf)); 1078 1079 printf("%s if=%s", host_buf, 1080 if_indextoname(p->if_index, ifix_buf)); 1081 printf(", flags=%s%s", 1082 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1083 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1084 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1085 printf(", pref=%s", rtpref_str[rtpref]); 1086 1087 gettimeofday(&time, 0); 1088 if (p->expire == 0) 1089 printf(", expire=Never\n"); 1090 else 1091 printf(", expire=%s\n", 1092 sec2str(p->expire - time.tv_sec)); 1093 } 1094 free(buf); 1095 #else 1096 struct in6_drlist dr; 1097 int s, i; 1098 struct timeval time; 1099 1100 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1101 err(1, "socket"); 1102 /* NOTREACHED */ 1103 } 1104 bzero(&dr, sizeof(dr)); 1105 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1106 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1107 err(1, "ioctl(SIOCGDRLST_IN6)"); 1108 /* NOTREACHED */ 1109 } 1110 #define DR dr.defrouter[i] 1111 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1112 struct sockaddr_in6 sin6; 1113 1114 bzero(&sin6, sizeof(sin6)); 1115 sin6.sin6_family = AF_INET6; 1116 sin6.sin6_len = sizeof(sin6); 1117 sin6.sin6_addr = DR.rtaddr; 1118 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1119 sizeof(host_buf), NULL, 0, 1120 (nflag ? NI_NUMERICHOST : 0)); 1121 1122 printf("%s if=%s", host_buf, 1123 if_indextoname(DR.if_index, ifix_buf)); 1124 printf(", flags=%s%s", 1125 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1126 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1127 gettimeofday(&time, 0); 1128 if (DR.expire == 0) 1129 printf(", expire=Never\n"); 1130 else 1131 printf(", expire=%s\n", 1132 sec2str(DR.expire - time.tv_sec)); 1133 } 1134 #undef DR 1135 close(s); 1136 #endif 1137 } 1138 1139 void 1140 plist() 1141 { 1142 #ifdef ICMPV6CTL_ND6_PRLIST 1143 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1144 char *buf; 1145 struct in6_prefix *p, *ep, *n; 1146 struct sockaddr_in6 *advrtr; 1147 size_t l; 1148 struct timeval time; 1149 const int niflags = NI_NUMERICHOST; 1150 int ninflags = nflag ? NI_NUMERICHOST : 0; 1151 char namebuf[NI_MAXHOST]; 1152 1153 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1154 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1155 /*NOTREACHED*/ 1156 } 1157 buf = malloc(l); 1158 if (!buf) { 1159 errx(1, "not enough core"); 1160 /*NOTREACHED*/ 1161 } 1162 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1163 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1164 /*NOTREACHED*/ 1165 } 1166 1167 ep = (struct in6_prefix *)(buf + l); 1168 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1169 advrtr = (struct sockaddr_in6 *)(p + 1); 1170 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1171 1172 if (getnameinfo((struct sockaddr *)&p->prefix, 1173 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1174 NULL, 0, niflags) != 0) 1175 strlcpy(namebuf, "?", sizeof(namebuf)); 1176 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1177 if_indextoname(p->if_index, ifix_buf)); 1178 1179 gettimeofday(&time, 0); 1180 /* 1181 * meaning of fields, especially flags, is very different 1182 * by origin. notify the difference to the users. 1183 */ 1184 printf("flags=%s%s%s%s%s", 1185 p->raflags.onlink ? "L" : "", 1186 p->raflags.autonomous ? "A" : "", 1187 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1188 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1189 #ifdef NDPRF_HOME 1190 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1191 #else 1192 "" 1193 #endif 1194 ); 1195 if (p->vltime == ND6_INFINITE_LIFETIME) 1196 printf(" vltime=infinity"); 1197 else 1198 printf(" vltime=%lu", (unsigned long)p->vltime); 1199 if (p->pltime == ND6_INFINITE_LIFETIME) 1200 printf(", pltime=infinity"); 1201 else 1202 printf(", pltime=%lu", (unsigned long)p->pltime); 1203 if (p->expire == 0) 1204 printf(", expire=Never"); 1205 else if (p->expire >= time.tv_sec) 1206 printf(", expire=%s", 1207 sec2str(p->expire - time.tv_sec)); 1208 else 1209 printf(", expired"); 1210 printf(", ref=%d", p->refcnt); 1211 printf("\n"); 1212 /* 1213 * "advertising router" list is meaningful only if the prefix 1214 * information is from RA. 1215 */ 1216 if (p->advrtrs) { 1217 int j; 1218 struct sockaddr_in6 *sin6; 1219 1220 sin6 = advrtr; 1221 printf(" advertised by\n"); 1222 for (j = 0; j < p->advrtrs; j++) { 1223 struct in6_nbrinfo *nbi; 1224 1225 if (getnameinfo((struct sockaddr *)sin6, 1226 sin6->sin6_len, namebuf, sizeof(namebuf), 1227 NULL, 0, ninflags) != 0) 1228 strlcpy(namebuf, "?", sizeof(namebuf)); 1229 printf(" %s", namebuf); 1230 1231 nbi = getnbrinfo(&sin6->sin6_addr, 1232 p->if_index, 0); 1233 if (nbi) { 1234 switch (nbi->state) { 1235 case ND6_LLINFO_REACHABLE: 1236 case ND6_LLINFO_STALE: 1237 case ND6_LLINFO_DELAY: 1238 case ND6_LLINFO_PROBE: 1239 printf(" (reachable)\n"); 1240 break; 1241 default: 1242 printf(" (unreachable)\n"); 1243 } 1244 } else 1245 printf(" (no neighbor state)\n"); 1246 sin6++; 1247 } 1248 } else 1249 printf(" No advertising router\n"); 1250 } 1251 free(buf); 1252 #else 1253 struct in6_prlist pr; 1254 int s, i; 1255 struct timeval time; 1256 1257 gettimeofday(&time, 0); 1258 1259 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1260 err(1, "socket"); 1261 /* NOTREACHED */ 1262 } 1263 bzero(&pr, sizeof(pr)); 1264 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1265 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1266 err(1, "ioctl(SIOCGPRLST_IN6)"); 1267 /* NOTREACHED */ 1268 } 1269 #define PR pr.prefix[i] 1270 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1271 struct sockaddr_in6 p6; 1272 char namebuf[NI_MAXHOST]; 1273 int niflags; 1274 1275 #ifdef NDPRF_ONLINK 1276 p6 = PR.prefix; 1277 #else 1278 memset(&p6, 0, sizeof(p6)); 1279 p6.sin6_family = AF_INET6; 1280 p6.sin6_len = sizeof(p6); 1281 p6.sin6_addr = PR.prefix; 1282 #endif 1283 1284 /* 1285 * copy link index to sin6_scope_id field. 1286 * XXX: KAME specific. 1287 */ 1288 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1289 u_int16_t linkid; 1290 1291 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1292 sizeof(linkid)); 1293 linkid = ntohs(linkid); 1294 p6.sin6_scope_id = linkid; 1295 p6.sin6_addr.s6_addr[2] = 0; 1296 p6.sin6_addr.s6_addr[3] = 0; 1297 } 1298 1299 niflags = NI_NUMERICHOST; 1300 if (getnameinfo((struct sockaddr *)&p6, 1301 sizeof(p6), namebuf, sizeof(namebuf), 1302 NULL, 0, niflags)) { 1303 warnx("getnameinfo failed"); 1304 continue; 1305 } 1306 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1307 if_indextoname(PR.if_index, ifix_buf)); 1308 1309 gettimeofday(&time, 0); 1310 /* 1311 * meaning of fields, especially flags, is very different 1312 * by origin. notify the difference to the users. 1313 */ 1314 #if 0 1315 printf(" %s", 1316 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1317 #endif 1318 #ifdef NDPRF_ONLINK 1319 printf("flags=%s%s%s%s%s", 1320 PR.raflags.onlink ? "L" : "", 1321 PR.raflags.autonomous ? "A" : "", 1322 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1323 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1324 #ifdef NDPRF_HOME 1325 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1326 #else 1327 "" 1328 #endif 1329 ); 1330 #else 1331 printf("flags=%s%s", 1332 PR.raflags.onlink ? "L" : "", 1333 PR.raflags.autonomous ? "A" : ""); 1334 #endif 1335 if (PR.vltime == ND6_INFINITE_LIFETIME) 1336 printf(" vltime=infinity"); 1337 else 1338 printf(" vltime=%lu", PR.vltime); 1339 if (PR.pltime == ND6_INFINITE_LIFETIME) 1340 printf(", pltime=infinity"); 1341 else 1342 printf(", pltime=%lu", PR.pltime); 1343 if (PR.expire == 0) 1344 printf(", expire=Never"); 1345 else if (PR.expire >= time.tv_sec) 1346 printf(", expire=%s", 1347 sec2str(PR.expire - time.tv_sec)); 1348 else 1349 printf(", expired"); 1350 #ifdef NDPRF_ONLINK 1351 printf(", ref=%d", PR.refcnt); 1352 #endif 1353 #if 0 1354 switch (PR.origin) { 1355 case PR_ORIG_RA: 1356 printf(", origin=RA"); 1357 break; 1358 case PR_ORIG_RR: 1359 printf(", origin=RR"); 1360 break; 1361 case PR_ORIG_STATIC: 1362 printf(", origin=static"); 1363 break; 1364 case PR_ORIG_KERNEL: 1365 printf(", origin=kernel"); 1366 break; 1367 default: 1368 printf(", origin=?"); 1369 break; 1370 } 1371 #endif 1372 printf("\n"); 1373 /* 1374 * "advertising router" list is meaningful only if the prefix 1375 * information is from RA. 1376 */ 1377 if (0 && /* prefix origin is almost obsolted */ 1378 PR.origin != PR_ORIG_RA) 1379 ; 1380 else if (PR.advrtrs) { 1381 int j; 1382 printf(" advertised by\n"); 1383 for (j = 0; j < PR.advrtrs; j++) { 1384 struct sockaddr_in6 sin6; 1385 struct in6_nbrinfo *nbi; 1386 1387 bzero(&sin6, sizeof(sin6)); 1388 sin6.sin6_family = AF_INET6; 1389 sin6.sin6_len = sizeof(sin6); 1390 sin6.sin6_addr = PR.advrtr[j]; 1391 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1392 getnameinfo((struct sockaddr *)&sin6, 1393 sin6.sin6_len, host_buf, 1394 sizeof(host_buf), NULL, 0, 1395 (nflag ? NI_NUMERICHOST : 0)); 1396 printf(" %s", host_buf); 1397 1398 nbi = getnbrinfo(&sin6.sin6_addr, 1399 PR.if_index, 0); 1400 if (nbi) { 1401 switch (nbi->state) { 1402 case ND6_LLINFO_REACHABLE: 1403 case ND6_LLINFO_STALE: 1404 case ND6_LLINFO_DELAY: 1405 case ND6_LLINFO_PROBE: 1406 printf(" (reachable)\n"); 1407 break; 1408 default: 1409 printf(" (unreachable)\n"); 1410 } 1411 } else 1412 printf(" (no neighbor state)\n"); 1413 } 1414 if (PR.advrtrs > DRLSTSIZ) 1415 printf(" and %d routers\n", 1416 PR.advrtrs - DRLSTSIZ); 1417 } else 1418 printf(" No advertising router\n"); 1419 } 1420 #undef PR 1421 close(s); 1422 #endif 1423 } 1424 1425 void 1426 pfx_flush() 1427 { 1428 char dummyif[IFNAMSIZ+8]; 1429 int s; 1430 1431 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1432 err(1, "socket"); 1433 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1434 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1435 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1436 } 1437 1438 void 1439 rtr_flush() 1440 { 1441 char dummyif[IFNAMSIZ+8]; 1442 int s; 1443 1444 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1445 err(1, "socket"); 1446 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1447 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1448 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1449 1450 close(s); 1451 } 1452 1453 void 1454 harmonize_rtr() 1455 { 1456 char dummyif[IFNAMSIZ+8]; 1457 int s; 1458 1459 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1460 err(1, "socket"); 1461 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1462 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1463 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1464 1465 close(s); 1466 } 1467 1468 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1469 static void 1470 setdefif(ifname) 1471 char *ifname; 1472 { 1473 struct in6_ndifreq ndifreq; 1474 unsigned int ifindex; 1475 1476 if (strcasecmp(ifname, "delete") == 0) 1477 ifindex = 0; 1478 else { 1479 if ((ifindex = if_nametoindex(ifname)) == 0) 1480 err(1, "failed to resolve i/f index for %s", ifname); 1481 } 1482 1483 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1484 err(1, "socket"); 1485 1486 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1487 ndifreq.ifindex = ifindex; 1488 1489 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1490 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1491 1492 close(s); 1493 } 1494 1495 static void 1496 getdefif() 1497 { 1498 struct in6_ndifreq ndifreq; 1499 char ifname[IFNAMSIZ+8]; 1500 1501 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1502 err(1, "socket"); 1503 1504 memset(&ndifreq, 0, sizeof(ndifreq)); 1505 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1506 1507 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1508 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1509 1510 if (ndifreq.ifindex == 0) 1511 printf("No default interface.\n"); 1512 else { 1513 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1514 err(1, "failed to resolve ifname for index %lu", 1515 ndifreq.ifindex); 1516 printf("ND default interface = %s\n", ifname); 1517 } 1518 1519 close(s); 1520 } 1521 #endif 1522 1523 static char * 1524 sec2str(total) 1525 time_t total; 1526 { 1527 static char result[256]; 1528 int days, hours, mins, secs; 1529 int first = 1; 1530 char *p = result; 1531 char *ep = &result[sizeof(result)]; 1532 int n; 1533 1534 days = total / 3600 / 24; 1535 hours = (total / 3600) % 24; 1536 mins = (total / 60) % 60; 1537 secs = total % 60; 1538 1539 if (days) { 1540 first = 0; 1541 n = snprintf(p, ep - p, "%dd", days); 1542 if (n < 0 || n >= ep - p) 1543 return "?"; 1544 p += n; 1545 } 1546 if (!first || hours) { 1547 first = 0; 1548 n = snprintf(p, ep - p, "%dh", hours); 1549 if (n < 0 || n >= ep - p) 1550 return "?"; 1551 p += n; 1552 } 1553 if (!first || mins) { 1554 first = 0; 1555 n = snprintf(p, ep - p, "%dm", mins); 1556 if (n < 0 || n >= ep - p) 1557 return "?"; 1558 p += n; 1559 } 1560 snprintf(p, ep - p, "%ds", secs); 1561 1562 return(result); 1563 } 1564 1565 /* 1566 * Print the timestamp 1567 * from tcpdump/util.c 1568 */ 1569 static void 1570 ts_print(tvp) 1571 const struct timeval *tvp; 1572 { 1573 int s; 1574 1575 /* Default */ 1576 s = (tvp->tv_sec + thiszone) % 86400; 1577 (void)printf("%02d:%02d:%02d.%06u ", 1578 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1579 } 1580
Indexes created Sun Sep 28 16:09:52 GMT 2025