1 /* $FreeBSD$ */ 2 /* $KAME: ndp.c,v 1.104 2003/06/27 07:48:39 itojun Exp $ */ 3 4 /*- 5 * SPDX-License-Identifier: BSD-3-Clause 6 * 7 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the project nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 /* 35 * Copyright (c) 1984, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * This code is derived from software contributed to Berkeley by 39 * Sun Microsystems, Inc. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 */ 65 66 /* 67 * Based on: 68 * "@(#) Copyright (c) 1984, 1993\n\ 69 * The Regents of the University of California. All rights reserved.\n"; 70 * 71 * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; 72 */ 73 74 /* 75 * ndp - display, set, delete and flush neighbor cache 76 */ 77 78 79 #include <sys/param.h> 80 #include <sys/file.h> 81 #include <sys/ioctl.h> 82 #include <sys/socket.h> 83 #include <sys/sysctl.h> 84 #include <sys/time.h> 85 #include <sys/queue.h> 86 87 #include <net/if.h> 88 #include <net/if_dl.h> 89 #include <net/if_types.h> 90 #include <net/route.h> 91 92 #include <netinet/in.h> 93 #include <netinet/if_ether.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 <assert.h> 102 #include <ctype.h> 103 #include <netdb.h> 104 #include <errno.h> 105 #include <nlist.h> 106 #include <stdbool.h> 107 #include <stdio.h> 108 #include <string.h> 109 #include <paths.h> 110 #include <err.h> 111 #include <stdint.h> 112 #include <stdlib.h> 113 #include <fcntl.h> 114 #include <unistd.h> 115 #include <libxo/xo.h> 116 #include <time.h> 117 118 #include "ndp.h" 119 120 #define NEXTADDR(w, s) \ 121 if (rtm->rtm_addrs & (w)) { \ 122 bcopy((char *)&s, cp, sizeof(s)); \ 123 cp += SA_SIZE(&s); \ 124 } 125 126 static pid_t pid; 127 static int32_t thiszone; /* time difference with gmt */ 128 static int s = -1; 129 static int repeat = 0; 130 131 static char host_buf[NI_MAXHOST]; /* getnameinfo() */ 132 static char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 133 134 static int file(char *); 135 static int set(int, char **); 136 static void get(char *); 137 static int delete(char *); 138 static int dump(struct sockaddr_in6 *, int); 139 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *, int, int); 140 static int ndp_ether_aton(char *, u_char *); 141 static void usage(void); 142 static void ifinfo(char *, int, char **); 143 static void rtrlist(void); 144 static void plist(void); 145 static void pfx_flush(void); 146 static void rtr_flush(void); 147 static void harmonize_rtr(void); 148 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 149 static void getdefif(void); 150 static void setdefif(char *); 151 #endif 152 153 #ifdef WITHOUT_NETLINK 154 static void getsocket(void); 155 static int rtmsg(int); 156 #endif 157 158 static const char *rtpref_str[] = { 159 "medium", /* 00 */ 160 "high", /* 01 */ 161 "rsv", /* 10 */ 162 "low" /* 11 */ 163 }; 164 165 struct ndp_opts opts = {}; 166 167 #define NDP_XO_VERSION "1" 168 169 bool 170 valid_type(int if_type) 171 { 172 switch (if_type) { 173 case IFT_ETHER: 174 case IFT_FDDI: 175 case IFT_ISO88023: 176 case IFT_ISO88024: 177 case IFT_ISO88025: 178 case IFT_L2VLAN: 179 case IFT_BRIDGE: 180 return (true); 181 break; 182 } 183 return (false); 184 } 185 186 static int32_t 187 utc_offset(void) 188 { 189 time_t t; 190 struct tm *tm; 191 192 t = time(NULL); 193 tm = localtime(&t); 194 195 assert(tm->tm_gmtoff > INT32_MIN && tm->tm_gmtoff < INT32_MAX); 196 197 return (tm->tm_gmtoff); 198 } 199 200 int 201 main(int argc, char **argv) 202 { 203 int ch, mode = 0; 204 char *arg = NULL; 205 206 pid = getpid(); 207 thiszone = utc_offset(); 208 209 argc = xo_parse_args(argc, argv); 210 if (argc < 0) 211 exit(1); 212 xo_set_version(NDP_XO_VERSION); 213 xo_open_container("ndp"); 214 215 while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 216 switch (ch) { 217 case 'a': 218 case 'c': 219 case 'p': 220 case 'r': 221 case 'H': 222 case 'P': 223 case 'R': 224 case 's': 225 case 'I': 226 if (mode) { 227 usage(); 228 /*NOTREACHED*/ 229 } 230 mode = ch; 231 arg = NULL; 232 break; 233 case 'f': 234 exit(file(optarg) ? 1 : 0); 235 case 'd': 236 case 'i': 237 if (mode) { 238 usage(); 239 /*NOTREACHED*/ 240 } 241 mode = ch; 242 arg = optarg; 243 break; 244 case 'n': 245 opts.nflag = true; 246 break; 247 case 't': 248 opts.tflag = true; 249 break; 250 case 'A': 251 if (mode) { 252 usage(); 253 /*NOTREACHED*/ 254 } 255 mode = 'a'; 256 repeat = atoi(optarg); 257 if (repeat < 0) { 258 usage(); 259 /*NOTREACHED*/ 260 } 261 break; 262 default: 263 usage(); 264 } 265 266 argc -= optind; 267 argv += optind; 268 269 switch (mode) { 270 case 'a': 271 case 'c': 272 if (argc != 0) { 273 usage(); 274 /*NOTREACHED*/ 275 } 276 dump(0, mode == 'c'); 277 break; 278 case 'd': 279 if (argc != 0) { 280 usage(); 281 /*NOTREACHED*/ 282 } 283 xo_open_list("neighbor-cache"); 284 delete(arg); 285 xo_close_list("neighbor-cache"); 286 break; 287 case 'I': 288 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 289 if (argc > 1) { 290 usage(); 291 /*NOTREACHED*/ 292 } else if (argc == 1) { 293 if (strcmp(*argv, "delete") == 0 || 294 if_nametoindex(*argv)) 295 setdefif(*argv); 296 else 297 xo_errx(1, "invalid interface %s", *argv); 298 } 299 getdefif(); /* always call it to print the result */ 300 break; 301 #else 302 xo_errx(1, "not supported yet"); 303 /*NOTREACHED*/ 304 #endif 305 case 'p': 306 if (argc != 0) { 307 usage(); 308 /*NOTREACHED*/ 309 } 310 plist(); 311 break; 312 case 'i': 313 ifinfo(arg, argc, argv); 314 break; 315 case 'r': 316 if (argc != 0) { 317 usage(); 318 /*NOTREACHED*/ 319 } 320 rtrlist(); 321 break; 322 case 's': 323 if (argc < 2 || argc > 4) 324 usage(); 325 exit(set(argc, argv) ? 1 : 0); 326 case 'H': 327 if (argc != 0) { 328 usage(); 329 /*NOTREACHED*/ 330 } 331 harmonize_rtr(); 332 break; 333 case 'P': 334 if (argc != 0) { 335 usage(); 336 /*NOTREACHED*/ 337 } 338 pfx_flush(); 339 break; 340 case 'R': 341 if (argc != 0) { 342 usage(); 343 /*NOTREACHED*/ 344 } 345 rtr_flush(); 346 break; 347 case 0: 348 if (argc != 1) { 349 usage(); 350 /*NOTREACHED*/ 351 } 352 get(argv[0]); 353 break; 354 } 355 xo_close_container("ndp"); 356 xo_finish(); 357 exit(0); 358 } 359 360 /* 361 * Process a file to set standard ndp entries 362 */ 363 static int 364 file(char *name) 365 { 366 FILE *fp; 367 int i, retval; 368 char line[100], arg[5][50], *args[5], *p; 369 370 if ((fp = fopen(name, "r")) == NULL) 371 xo_err(1, "cannot open %s", name); 372 args[0] = &arg[0][0]; 373 args[1] = &arg[1][0]; 374 args[2] = &arg[2][0]; 375 args[3] = &arg[3][0]; 376 args[4] = &arg[4][0]; 377 retval = 0; 378 while (fgets(line, sizeof(line), fp) != NULL) { 379 if ((p = strchr(line, '#')) != NULL) 380 *p = '\0'; 381 for (p = line; isblank(*p); p++); 382 if (*p == '\n' || *p == '\0') 383 continue; 384 i = sscanf(line, "%49s %49s %49s %49s %49s", 385 arg[0], arg[1], arg[2], arg[3], arg[4]); 386 if (i < 2) { 387 xo_warnx("bad line: %s", line); 388 retval = 1; 389 continue; 390 } 391 if (set(i, args)) 392 retval = 1; 393 } 394 fclose(fp); 395 return (retval); 396 } 397 398 static void 399 getsocket(void) 400 { 401 if (s < 0) { 402 s = socket(PF_ROUTE, SOCK_RAW, 0); 403 if (s < 0) { 404 xo_err(1, "socket"); 405 /* NOTREACHED */ 406 } 407 } 408 } 409 410 static struct sockaddr_in6 so_mask = { 411 .sin6_len = sizeof(so_mask), 412 .sin6_family = AF_INET6 413 }; 414 static struct sockaddr_in6 blank_sin = { 415 .sin6_len = sizeof(blank_sin), 416 .sin6_family = AF_INET6 417 }; 418 static struct sockaddr_in6 sin_m; 419 static struct sockaddr_dl blank_sdl = { 420 .sdl_len = sizeof(blank_sdl), 421 .sdl_family = AF_LINK 422 }; 423 static struct sockaddr_dl sdl_m; 424 #ifdef WITHOUT_NETLINK 425 static struct { 426 struct rt_msghdr m_rtm; 427 char m_space[512]; 428 } m_rtmsg; 429 #endif 430 431 /* 432 * Set an individual neighbor cache entry 433 */ 434 static int 435 set(int argc, char **argv) 436 { 437 struct sockaddr_in6 *sin = &sin_m; 438 int gai_error; 439 u_char *ea; 440 char *host = argv[0], *eaddr = argv[1]; 441 442 argc -= 2; 443 argv += 2; 444 sdl_m = blank_sdl; 445 sin_m = blank_sin; 446 447 gai_error = getaddr(host, sin); 448 if (gai_error) { 449 xo_warnx("%s: %s", host, gai_strerror(gai_error)); 450 return 1; 451 } 452 453 ea = (u_char *)LLADDR(&sdl_m); 454 if (ndp_ether_aton(eaddr, ea) == 0) 455 sdl_m.sdl_alen = 6; 456 while (argc-- > 0) { 457 if (strncmp(argv[0], "temp", 4) == 0) { 458 struct timeval now; 459 460 gettimeofday(&now, 0); 461 opts.expire_time = now.tv_sec + 20 * 60; 462 } else if (strncmp(argv[0], "proxy", 5) == 0) 463 opts.flags |= RTF_ANNOUNCE; 464 argv++; 465 } 466 467 #ifndef WITHOUT_NETLINK 468 return (set_nl(0, sin, &sdl_m, host)); 469 #else 470 struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 471 struct sockaddr_dl *sdl; 472 473 getsocket(); 474 475 if (rtmsg(RTM_GET) < 0) { 476 xo_errx(1, "RTM_GET(%s) failed", host); 477 /* NOTREACHED */ 478 } 479 sin = (struct sockaddr_in6 *)(rtm + 1); 480 sdl = (struct sockaddr_dl *)(ALIGN(sin->sin6_len) + (char *)sin); 481 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 482 if (sdl->sdl_family == AF_LINK && 483 !(rtm->rtm_flags & RTF_GATEWAY)) { 484 if (valid_type(sdl->sdl_type)) 485 goto overwrite; 486 } 487 xo_warnx("cannot configure a new entry"); 488 return 1; 489 } 490 491 overwrite: 492 if (sdl->sdl_family != AF_LINK) { 493 xo_warnx("cannot intuit interface index and type for %s", host); 494 return (1); 495 } 496 sdl_m.sdl_type = sdl->sdl_type; 497 sdl_m.sdl_index = sdl->sdl_index; 498 return (rtmsg(RTM_ADD)); 499 #endif 500 } 501 502 int 503 getaddr(char *host, struct sockaddr_in6 *sin6) 504 { 505 struct addrinfo hints = { .ai_family = AF_INET6 }; 506 struct addrinfo *res; 507 508 int gai_error = getaddrinfo(host, NULL, &hints, &res); 509 if (gai_error != 0) 510 return (gai_error); 511 sin6->sin6_family = AF_INET6; 512 sin6->sin6_len = sizeof(*sin6); 513 sin6->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 514 sin6->sin6_scope_id = 515 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 516 return (0); 517 } 518 519 /* 520 * Display an individual neighbor cache entry 521 */ 522 static void 523 get(char *host) 524 { 525 struct sockaddr_in6 *sin = &sin_m; 526 int gai_error; 527 528 sin_m = blank_sin; 529 530 gai_error = getaddr(host, sin); 531 if (gai_error) { 532 xo_warnx("%s: %s", host, gai_strerror(gai_error)); 533 return; 534 } 535 if (dump(sin, 0) == 0) { 536 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 537 sizeof(host_buf), NULL ,0, 538 (opts.nflag ? NI_NUMERICHOST : 0)); 539 xo_errx(1, "%s (%s) -- no entry", host, host_buf); 540 } 541 } 542 543 #ifdef WITHOUT_NETLINK 544 /* 545 * Delete a neighbor cache entry 546 */ 547 static int 548 delete_rtsock(char *host) 549 { 550 struct sockaddr_in6 *sin = &sin_m; 551 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 552 register char *cp = m_rtmsg.m_space; 553 struct sockaddr_dl *sdl; 554 int gai_error; 555 556 getsocket(); 557 sin_m = blank_sin; 558 559 gai_error = getaddr(host, sin); 560 if (gai_error) { 561 xo_warnx("%s: %s", host, gai_strerror(gai_error)); 562 return 1; 563 } 564 565 if (rtmsg(RTM_GET) < 0) { 566 xo_errx(1, "RTM_GET(%s) failed", host); 567 /* NOTREACHED */ 568 } 569 sin = (struct sockaddr_in6 *)(rtm + 1); 570 sdl = (struct sockaddr_dl *)(ALIGN(sin->sin6_len) + (char *)sin); 571 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 572 if (sdl->sdl_family == AF_LINK && 573 !(rtm->rtm_flags & RTF_GATEWAY)) { 574 goto delete; 575 } 576 xo_warnx("delete: cannot delete non-NDP entry"); 577 return 1; 578 } 579 580 delete: 581 if (sdl->sdl_family != AF_LINK) { 582 xo_warnx("cannot locate %s", host); 583 return (1); 584 } 585 /* 586 * need to reinit the field because it has rt_key 587 * but we want the actual address 588 */ 589 NEXTADDR(RTA_DST, sin_m); 590 rtm->rtm_flags |= RTF_LLDATA; 591 if (rtmsg(RTM_DELETE) == 0) { 592 getnameinfo((struct sockaddr *)sin, 593 sin->sin6_len, host_buf, 594 sizeof(host_buf), NULL, 0, 595 (opts.nflag ? NI_NUMERICHOST : 0)); 596 xo_open_instance("neighbor-cache"); 597 598 char *ifname = if_indextoname(sdl->sdl_index, ifix_buf); 599 if (ifname == NULL) { 600 strlcpy(ifix_buf, "?", sizeof(ifix_buf)); 601 ifname = ifix_buf; 602 } 603 char abuf[INET6_ADDRSTRLEN]; 604 inet_ntop(AF_INET6, &sin->sin6_addr, abuf, sizeof(abuf)); 605 606 xo_emit("{:hostname/%s}{d:/ (%s) deleted\n}", host, host_buf); 607 xo_emit("{e:address/%s}{e:interface/%s}", abuf, ifname); 608 xo_close_instance("neighbor-cache"); 609 } 610 611 return 0; 612 } 613 614 /* 615 * Dump the entire neighbor cache 616 */ 617 static int 618 dump_rtsock(struct sockaddr_in6 *addr, int cflag) 619 { 620 int mib[6]; 621 size_t needed; 622 char *lim, *buf, *next; 623 struct rt_msghdr *rtm; 624 struct sockaddr_in6 *sin; 625 struct sockaddr_dl *sdl; 626 struct timeval now; 627 time_t expire; 628 int addrwidth; 629 int llwidth; 630 int ifwidth; 631 char flgbuf[8]; 632 char *ifname; 633 634 /* Print header */ 635 if (!opts.tflag && !cflag) { 636 char xobuf[200]; 637 snprintf(xobuf, sizeof(xobuf), 638 "{T:/%%-%d.%ds} {T:/%%-%d.%ds} {T:/%%%d.%ds} {T:/%%-9.9s} {T:%%1s} {T:%%5s}\n", 639 W_ADDR, W_ADDR, W_LL, W_LL, W_IF, W_IF); 640 xo_emit(xobuf, "Neighbor", "Linklayer Address", "Netif", "Expire", "S", "Flags"); 641 } 642 xo_open_list("neighbor-cache"); 643 again:; 644 mib[0] = CTL_NET; 645 mib[1] = PF_ROUTE; 646 mib[2] = 0; 647 mib[3] = AF_INET6; 648 mib[4] = NET_RT_FLAGS; 649 #ifdef RTF_LLINFO 650 mib[5] = RTF_LLINFO; 651 #else 652 mib[5] = 0; 653 #endif 654 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 655 xo_err(1, "sysctl(PF_ROUTE estimate)"); 656 if (needed > 0) { 657 if ((buf = malloc(needed)) == NULL) 658 xo_err(1, "malloc"); 659 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 660 xo_err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 661 lim = buf + needed; 662 } else 663 buf = lim = NULL; 664 665 int count = 0; 666 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 667 int isrouter = 0, prbs = 0; 668 669 rtm = (struct rt_msghdr *)next; 670 sin = (struct sockaddr_in6 *)(rtm + 1); 671 sdl = (struct sockaddr_dl *)((char *)sin + 672 ALIGN(sin->sin6_len)); 673 674 /* 675 * Some OSes can produce a route that has the LINK flag but 676 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 677 * and BSD/OS, where xx is not the interface identifier on 678 * lo0). Such routes entry would annoy getnbrinfo() below, 679 * so we skip them. 680 * XXX: such routes should have the GATEWAY flag, not the 681 * LINK flag. However, there is rotten routing software 682 * that advertises all routes that have the GATEWAY flag. 683 * Thus, KAME kernel intentionally does not set the LINK flag. 684 * What is to be fixed is not ndp, but such routing software 685 * (and the kernel workaround)... 686 */ 687 if (sdl->sdl_family != AF_LINK) 688 continue; 689 690 if (!(rtm->rtm_flags & RTF_HOST)) 691 continue; 692 693 if (addr) { 694 if (IN6_ARE_ADDR_EQUAL(&addr->sin6_addr, 695 &sin->sin6_addr) == 0 || 696 addr->sin6_scope_id != sin->sin6_scope_id) 697 continue; 698 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 699 continue; 700 count++; 701 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 702 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 703 /* XXX: should scope id be filled in the kernel? */ 704 if (sin->sin6_scope_id == 0) 705 sin->sin6_scope_id = sdl->sdl_index; 706 } 707 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 708 sizeof(host_buf), NULL, 0, (opts.nflag ? NI_NUMERICHOST : 0)); 709 if (cflag) { 710 #ifdef RTF_WASCLONED 711 if (rtm->rtm_flags & RTF_WASCLONED) 712 delete(host_buf); 713 #elif defined(RTF_CLONED) 714 if (rtm->rtm_flags & RTF_CLONED) 715 delete(host_buf); 716 #else 717 if (rtm->rtm_flags & RTF_PINNED) 718 continue; 719 delete(host_buf); 720 #endif 721 continue; 722 } 723 gettimeofday(&now, 0); 724 if (opts.tflag) 725 ts_print(&now); 726 727 addrwidth = strlen(host_buf); 728 if (addrwidth < W_ADDR) 729 addrwidth = W_ADDR; 730 llwidth = strlen(ether_str(sdl)); 731 if (W_ADDR + W_LL - addrwidth > llwidth) 732 llwidth = W_ADDR + W_LL - addrwidth; 733 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 734 if (ifname == NULL) { 735 strlcpy(ifix_buf, "?", sizeof(ifix_buf)); 736 ifname = ifix_buf; 737 } 738 ifwidth = strlen(ifname); 739 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 740 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 741 742 xo_open_instance("neighbor-cache"); 743 /* Compose format string for libxo, as it doesn't support *.* */ 744 char xobuf[200]; 745 snprintf(xobuf, sizeof(xobuf), 746 "{:address/%%-%d.%ds/%%s} {:mac-address/%%-%d.%ds/%%s} {:interface/%%%d.%ds/%%s}", 747 addrwidth, addrwidth, llwidth, llwidth, ifwidth, ifwidth); 748 xo_emit(xobuf, host_buf, ether_str(sdl), ifname); 749 750 /* Print neighbor discovery specific information */ 751 expire = rtm->rtm_rmx.rmx_expire; 752 int expire_in = expire - now.tv_sec; 753 if (expire > now.tv_sec) 754 xo_emit("{d:/ %-9.9s}{e:expires_sec/%d}", sec2str(expire_in), expire_in); 755 else if (expire == 0) 756 xo_emit("{d:/ %-9.9s}{en:permanent/true}", "permanent"); 757 else 758 xo_emit("{d:/ %-9.9s}{e:expires_sec/%d}", "expired", expire_in); 759 760 char *lle_state = ""; 761 switch (rtm->rtm_rmx.rmx_state) { 762 case ND6_LLINFO_NOSTATE: 763 lle_state = "N"; 764 break; 765 #ifdef ND6_LLINFO_WAITDELETE 766 case ND6_LLINFO_WAITDELETE: 767 lle_state = "W"; 768 break; 769 #endif 770 case ND6_LLINFO_INCOMPLETE: 771 lle_state = "I"; 772 break; 773 case ND6_LLINFO_REACHABLE: 774 lle_state = "R"; 775 break; 776 case ND6_LLINFO_STALE: 777 lle_state = "S"; 778 break; 779 case ND6_LLINFO_DELAY: 780 lle_state = "D"; 781 break; 782 case ND6_LLINFO_PROBE: 783 lle_state = "P"; 784 break; 785 default: 786 lle_state = "?"; 787 break; 788 } 789 xo_emit(" {:neighbor-state/%s}", lle_state); 790 791 isrouter = rtm->rtm_flags & RTF_GATEWAY; 792 prbs = rtm->rtm_rmx.rmx_pksent; 793 794 /* 795 * other flags. R: router, P: proxy, W: ?? 796 */ 797 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 798 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 799 isrouter ? "R" : "", 800 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 801 } else { 802 #if 0 /* W and P are mystery even for us */ 803 sin = (struct sockaddr_in6 *) 804 (sdl->sdl_len + (char *)sdl); 805 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 806 isrouter ? "R" : "", 807 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 808 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 809 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 810 #else 811 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 812 isrouter ? "R" : "", 813 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 814 #endif 815 } 816 xo_emit(" {:nd-flags/%s}", flgbuf); 817 818 if (prbs) 819 xo_emit("{d:/ %d}", prbs); 820 821 xo_emit("\n"); 822 xo_close_instance("neighbor-cache"); 823 } 824 if (buf != NULL) 825 free(buf); 826 827 if (repeat) { 828 xo_emit("\n"); 829 xo_flush(); 830 sleep(repeat); 831 goto again; 832 } 833 834 xo_close_list("neighbor-cache"); 835 836 return (count); 837 } 838 #endif 839 840 841 static int 842 delete(char *host) 843 { 844 #ifndef WITHOUT_NETLINK 845 return (delete_nl(0, host)); 846 #else 847 return (delete_rtsock(host)); 848 #endif 849 } 850 851 static int 852 dump(struct sockaddr_in6 *addr, int cflag) 853 { 854 #ifndef WITHOUT_NETLINK 855 return (print_entries_nl(0, addr, cflag)); 856 #else 857 return (dump_rtsock(addr, cflag)); 858 #endif 859 } 860 861 static struct in6_nbrinfo * 862 getnbrinfo(struct in6_addr *addr, int ifindex, int warning) 863 { 864 static struct in6_nbrinfo nbi; 865 int sock; 866 867 if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 868 xo_err(1, "socket"); 869 870 bzero(&nbi, sizeof(nbi)); 871 if_indextoname(ifindex, nbi.ifname); 872 nbi.addr = *addr; 873 if (ioctl(sock, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 874 if (warning) 875 xo_warn("ioctl(SIOCGNBRINFO_IN6)"); 876 close(sock); 877 return(NULL); 878 } 879 880 close(sock); 881 return(&nbi); 882 } 883 884 char * 885 ether_str(struct sockaddr_dl *sdl) 886 { 887 static char hbuf[NI_MAXHOST]; 888 889 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 890 strlcpy(hbuf, ether_ntoa((struct ether_addr *)LLADDR(sdl)), 891 sizeof(hbuf)); 892 } else if (sdl->sdl_alen) { 893 int n = sdl->sdl_nlen > 0 ? sdl->sdl_nlen + 1 : 0; 894 snprintf(hbuf, sizeof(hbuf), "%s", link_ntoa(sdl) + n); 895 } else 896 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 897 898 return(hbuf); 899 } 900 901 static int 902 ndp_ether_aton(char *a, u_char *n) 903 { 904 int i, o[6]; 905 906 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 907 &o[3], &o[4], &o[5]); 908 if (i != 6) { 909 xo_warnx("invalid Ethernet address '%s'", a); 910 return (1); 911 } 912 for (i = 0; i < 6; i++) 913 n[i] = o[i]; 914 return (0); 915 } 916 917 static void 918 usage(void) 919 { 920 printf("usage: ndp [-nt] hostname\n"); 921 printf(" ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n"); 922 printf(" ndp [-nt] -A wait\n"); 923 printf(" ndp [-nt] -d hostname\n"); 924 printf(" ndp [-nt] -f filename\n"); 925 printf(" ndp [-nt] -i interface [flags...]\n"); 926 #ifdef SIOCSDEFIFACE_IN6 927 printf(" ndp [-nt] -I [interface|delete]\n"); 928 #endif 929 printf(" ndp [-nt] -s nodename etheraddr [temp] [proxy]\n"); 930 exit(1); 931 } 932 933 #ifdef WITHOUT_NETLINK 934 static int 935 rtmsg(int cmd) 936 { 937 static int seq; 938 int rlen; 939 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 940 register char *cp = m_rtmsg.m_space; 941 register int l; 942 943 errno = 0; 944 if (cmd == RTM_DELETE) 945 goto doit; 946 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 947 rtm->rtm_flags = opts.flags; 948 rtm->rtm_version = RTM_VERSION; 949 950 switch (cmd) { 951 default: 952 xo_errx(1, "internal wrong cmd"); 953 case RTM_ADD: 954 rtm->rtm_addrs |= RTA_GATEWAY; 955 if (opts.expire_time) { 956 rtm->rtm_rmx.rmx_expire = opts.expire_time; 957 rtm->rtm_inits = RTV_EXPIRE; 958 } 959 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC | RTF_LLDATA); 960 /* FALLTHROUGH */ 961 case RTM_GET: 962 rtm->rtm_addrs |= RTA_DST; 963 } 964 965 NEXTADDR(RTA_DST, sin_m); 966 NEXTADDR(RTA_GATEWAY, sdl_m); 967 968 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 969 doit: 970 l = rtm->rtm_msglen; 971 rtm->rtm_seq = ++seq; 972 rtm->rtm_type = cmd; 973 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 974 if (errno != ESRCH || cmd != RTM_DELETE) { 975 xo_err(1, "writing to routing socket"); 976 /* NOTREACHED */ 977 } 978 } 979 do { 980 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 981 } while (l > 0 && (rtm->rtm_type != cmd || rtm->rtm_seq != seq || 982 rtm->rtm_pid != pid)); 983 if (l < 0) 984 xo_warn("read from routing socket"); 985 return (0); 986 } 987 #endif 988 989 static void 990 ifinfo(char *ifname, int argc, char **argv) 991 { 992 struct in6_ndireq nd; 993 int i, sock; 994 u_int32_t newflags; 995 #ifdef IPV6CTL_USETEMPADDR 996 u_int8_t nullbuf[8]; 997 #endif 998 999 if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1000 xo_err(1, "socket"); 1001 /* NOTREACHED */ 1002 } 1003 bzero(&nd, sizeof(nd)); 1004 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 1005 if (ioctl(sock, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 1006 xo_err(1, "ioctl(SIOCGIFINFO_IN6)"); 1007 /* NOTREACHED */ 1008 } 1009 #define ND nd.ndi 1010 newflags = ND.flags; 1011 for (i = 0; i < argc; i++) { 1012 int clear = 0; 1013 char *cp = argv[i]; 1014 1015 if (*cp == '-') { 1016 clear = 1; 1017 cp++; 1018 } 1019 1020 #define SETFLAG(s, f) do { \ 1021 if (strcmp(cp, (s)) == 0) { \ 1022 if (clear) \ 1023 newflags &= ~(f); \ 1024 else \ 1025 newflags |= (f); \ 1026 } \ 1027 } while (0) 1028 /* 1029 * XXX: this macro is not 100% correct, in that it matches "nud" against 1030 * "nudbogus". But we just let it go since this is minor. 1031 */ 1032 #define SETVALUE(f, v) do { \ 1033 char *valptr; \ 1034 unsigned long newval; \ 1035 v = 0; /* unspecified */ \ 1036 if (strncmp(cp, f, strlen(f)) == 0) { \ 1037 valptr = strchr(cp, '='); \ 1038 if (valptr == NULL) \ 1039 xo_err(1, "syntax error in %s field", (f)); \ 1040 errno = 0; \ 1041 newval = strtoul(++valptr, NULL, 0); \ 1042 if (errno) \ 1043 xo_err(1, "syntax error in %s's value", (f)); \ 1044 v = newval; \ 1045 } \ 1046 } while (0) 1047 1048 SETFLAG("disabled", ND6_IFF_IFDISABLED); 1049 SETFLAG("nud", ND6_IFF_PERFORMNUD); 1050 #ifdef ND6_IFF_ACCEPT_RTADV 1051 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 1052 #endif 1053 #ifdef ND6_IFF_AUTO_LINKLOCAL 1054 SETFLAG("auto_linklocal", ND6_IFF_AUTO_LINKLOCAL); 1055 #endif 1056 #ifdef ND6_IFF_NO_PREFER_IFACE 1057 SETFLAG("no_prefer_iface", ND6_IFF_NO_PREFER_IFACE); 1058 #endif 1059 SETVALUE("basereachable", ND.basereachable); 1060 SETVALUE("retrans", ND.retrans); 1061 SETVALUE("curhlim", ND.chlim); 1062 1063 ND.flags = newflags; 1064 if (ioctl(sock, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) { 1065 xo_err(1, "ioctl(SIOCSIFINFO_IN6)"); 1066 /* NOTREACHED */ 1067 } 1068 #undef SETFLAG 1069 #undef SETVALUE 1070 } 1071 1072 if (!ND.initialized) { 1073 xo_errx(1, "%s: not initialized yet", ifname); 1074 /* NOTREACHED */ 1075 } 1076 1077 if (ioctl(sock, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 1078 xo_err(1, "ioctl(SIOCGIFINFO_IN6)"); 1079 /* NOTREACHED */ 1080 } 1081 xo_open_container("ifinfo"); 1082 1083 xo_emit("{e:interface/%s}", ifname); 1084 xo_emit("linkmtu={:linkmtu/%d}", ND.linkmtu); 1085 xo_emit(", maxmtu={:maxmtu/%d}", ND.maxmtu); 1086 xo_emit(", curhlim={:curhlim/%d}", ND.chlim); 1087 xo_emit("{d:/, basereachable=%ds%dms}{e:basereachable_ms/%u}", 1088 ND.basereachable / 1000, ND.basereachable % 1000, ND.basereachable); 1089 xo_emit("{d:/, reachable=%ds}{e:reachable_ms/%u}", ND.reachable, ND.reachable * 1000); 1090 xo_emit("{d:/, retrans=%ds%dms}{e:retrans_ms/%u}", ND.retrans / 1000, ND.retrans % 1000, 1091 ND.retrans); 1092 #ifdef IPV6CTL_USETEMPADDR 1093 memset(nullbuf, 0, sizeof(nullbuf)); 1094 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 1095 int j; 1096 u_int8_t *rbuf; 1097 1098 for (i = 0; i < 3; i++) { 1099 const char *txt, *field; 1100 switch (i) { 1101 case 0: 1102 txt = "\nRandom seed(0): "; 1103 field = "seed_0"; 1104 rbuf = ND.randomseed0; 1105 break; 1106 case 1: 1107 txt = "\nRandom seed(1): "; 1108 field = "seed_1"; 1109 rbuf = ND.randomseed1; 1110 break; 1111 case 2: 1112 txt = "\nRandom ID: "; 1113 field = "random_id"; 1114 rbuf = ND.randomid; 1115 break; 1116 default: 1117 xo_errx(1, "impossible case for tempaddr display"); 1118 } 1119 char abuf[20], xobuf[200]; 1120 for (j = 0; j < 8; j++) 1121 snprintf(&abuf[j * 2], sizeof(abuf), "%02X", rbuf[j]); 1122 snprintf(xobuf, sizeof(xobuf), "%s{:%s/%%s}", txt, field); 1123 xo_emit(xobuf, abuf); 1124 } 1125 } 1126 #endif /* IPV6CTL_USETEMPADDR */ 1127 if (ND.flags) { 1128 xo_emit("\nFlags: {e:flags/%u}", ND.flags); 1129 xo_open_list("flags_pretty"); 1130 #ifdef ND6_IFF_IFDISABLED 1131 if ((ND.flags & ND6_IFF_IFDISABLED)) 1132 xo_emit("{l:%s} ", "disabled"); 1133 #endif 1134 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1135 xo_emit("{l:%s} ", "nud"); 1136 #ifdef ND6_IFF_ACCEPT_RTADV 1137 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1138 xo_emit("{l:%s} ", "accept_rtadv"); 1139 #endif 1140 #ifdef ND6_IFF_AUTO_LINKLOCAL 1141 if ((ND.flags & ND6_IFF_AUTO_LINKLOCAL)) 1142 xo_emit("{l:%s} ", "auto_linklocal"); 1143 #endif 1144 #ifdef ND6_IFF_NO_PREFER_IFACE 1145 if ((ND.flags & ND6_IFF_NO_PREFER_IFACE)) 1146 xo_emit("{l:%s} ", "no_prefer_iface"); 1147 #endif 1148 xo_close_list("flags"); 1149 } 1150 xo_emit("\n"); 1151 #undef ND 1152 xo_close_container("ifinfo"); 1153 1154 close(sock); 1155 } 1156 1157 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1158 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1159 #endif 1160 1161 static void 1162 rtrlist(void) 1163 { 1164 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1165 char *buf; 1166 struct in6_defrouter *p, *ep; 1167 size_t l; 1168 struct timeval now; 1169 1170 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1171 xo_err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1172 /*NOTREACHED*/ 1173 } 1174 if (l == 0) 1175 return; 1176 buf = malloc(l); 1177 if (!buf) { 1178 xo_err(1, "malloc"); 1179 /*NOTREACHED*/ 1180 } 1181 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1182 xo_err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1183 /*NOTREACHED*/ 1184 } 1185 1186 xo_open_list("router-list"); 1187 1188 ep = (struct in6_defrouter *)(buf + l); 1189 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1190 int rtpref; 1191 char abuf[INET6_ADDRSTRLEN], *paddr; 1192 1193 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1194 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1195 (opts.nflag ? NI_NUMERICHOST : 0)) != 0) 1196 strlcpy(host_buf, "?", sizeof(host_buf)); 1197 if (opts.nflag) 1198 paddr = host_buf; 1199 else { 1200 inet_ntop(AF_INET6, &p->rtaddr.sin6_addr, abuf, sizeof(abuf)); 1201 paddr = abuf; 1202 } 1203 1204 xo_open_instance("router-list"); 1205 xo_emit("{:hostname/%s}{e:address/%s} if={:interface/%s}", 1206 host_buf, paddr, 1207 if_indextoname(p->if_index, ifix_buf)); 1208 xo_open_list("flags_pretty"); 1209 char rflags[6] = {}, *pflags = rflags; 1210 if (p->flags & ND_RA_FLAG_MANAGED) { 1211 *pflags++ = 'M'; 1212 xo_emit("{el:%s}", "managed"); 1213 } 1214 if (p->flags & ND_RA_FLAG_OTHER) { 1215 *pflags++ = 'O'; 1216 xo_emit("{el:%s}", "other"); 1217 } 1218 #ifdef DRAFT_IETF_6MAN_IPV6ONLY_FLAG 1219 if (p->flags & ND_RA_FLAG_IPV6_ONLY) { 1220 *pflags++ = 'S'; 1221 xo_emit("{el:%s}", "ipv6only"); 1222 } 1223 #endif 1224 xo_close_list("flags_pretty"); 1225 xo_emit(", flags={:flags/%s}", rflags); 1226 1227 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1228 xo_emit(", pref={:preference/%s}", rtpref_str[rtpref]); 1229 1230 gettimeofday(&now, 0); 1231 if (p->expire == 0) 1232 xo_emit(", expire=Never\n{en:permanent/true}"); 1233 else 1234 xo_emit("{d:/, expire=%s\n}{e:expires_sec/%ld}", 1235 sec2str(p->expire - now.tv_sec), 1236 (long)p->expire - now.tv_sec); 1237 xo_close_instance("router-list"); 1238 } 1239 free(buf); 1240 xo_close_list("router-list"); 1241 } 1242 1243 static void 1244 plist(void) 1245 { 1246 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1247 char *buf; 1248 struct in6_prefix *p, *ep, *n; 1249 struct sockaddr_in6 *advrtr; 1250 size_t l; 1251 struct timeval now; 1252 const int niflags = NI_NUMERICHOST; 1253 int ninflags = opts.nflag ? NI_NUMERICHOST : 0; 1254 char namebuf[NI_MAXHOST]; 1255 1256 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1257 xo_err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1258 /*NOTREACHED*/ 1259 } 1260 buf = malloc(l); 1261 if (!buf) { 1262 xo_err(1, "malloc"); 1263 /*NOTREACHED*/ 1264 } 1265 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1266 xo_err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1267 /*NOTREACHED*/ 1268 } 1269 1270 xo_open_list("prefix-list"); 1271 1272 ep = (struct in6_prefix *)(buf + l); 1273 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1274 advrtr = (struct sockaddr_in6 *)(p + 1); 1275 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1276 1277 xo_open_instance("prefix-list"); 1278 if (getnameinfo((struct sockaddr *)&p->prefix, 1279 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1280 NULL, 0, niflags) != 0) 1281 strlcpy(namebuf, "?", sizeof(namebuf)); 1282 xo_emit("{:prefix/%s%s%d} if={:interface/%s}\n", namebuf, "/", 1283 p->prefixlen, if_indextoname(p->if_index, ifix_buf)); 1284 1285 gettimeofday(&now, 0); 1286 /* 1287 * meaning of fields, especially flags, is very different 1288 * by origin. notify the difference to the users. 1289 */ 1290 char flags[10] = {}, *pflags = flags; 1291 xo_open_list("flags_pretty"); 1292 if (p->raflags.onlink) { 1293 *pflags++ = 'L'; 1294 xo_emit("{el:%s}", "ra_onlink"); 1295 } 1296 if (p->raflags.autonomous) { 1297 *pflags++ = 'A'; 1298 xo_emit("{el:%s}", "ra_autonomous"); 1299 } 1300 if (p->flags & NDPRF_ONLINK) { 1301 *pflags++ = 'O'; 1302 xo_emit("{el:%s}", "is_onlink"); 1303 } 1304 if (p->flags & NDPRF_DETACHED) { 1305 *pflags++ = 'D'; 1306 xo_emit("{el:%s}", "is_detached"); 1307 } 1308 #ifdef NDPRF_HOME 1309 if (p->flags & NDPRF_HOME) { 1310 *pflags++ = 'H'; 1311 xo_emit("{el:%s}", "is_home"); 1312 } 1313 #endif 1314 xo_close_list("flags_pretty"); 1315 xo_emit("flags={:flags/%s}", flags); 1316 int expire_in = p->expire - now.tv_sec; 1317 1318 if (p->vltime == ND6_INFINITE_LIFETIME) 1319 xo_emit(" vltime=infinity{e:valid-lifetime/%lu}", 1320 (unsigned long)p->vltime); 1321 else 1322 xo_emit(" vltime={:valid-lifetime/%lu}", 1323 (unsigned long)p->vltime); 1324 if (p->pltime == ND6_INFINITE_LIFETIME) 1325 xo_emit(", pltime=infinity{e:preferred-lifetime/%lu}", 1326 (unsigned long)p->pltime); 1327 else 1328 xo_emit(", pltime={:preferred-lifetime/%lu}", 1329 (unsigned long)p->pltime); 1330 if (p->expire == 0) 1331 xo_emit(", expire=Never{en:permanent/true}"); 1332 else if (p->expire >= now.tv_sec) 1333 xo_emit(", expire=%s{e:expires_sec/%d}", 1334 sec2str(expire_in), expire_in); 1335 else 1336 xo_emit(", expired{e:expires_sec/%d}", expire_in); 1337 xo_emit(", ref={:refcount/%d}", p->refcnt); 1338 xo_emit("\n"); 1339 /* 1340 * "advertising router" list is meaningful only if the prefix 1341 * information is from RA. 1342 */ 1343 if (p->advrtrs) { 1344 int j; 1345 struct sockaddr_in6 *sin6; 1346 1347 sin6 = advrtr; 1348 xo_emit(" advertised by\n"); 1349 xo_open_list("advertising-routers"); 1350 for (j = 0; j < p->advrtrs; j++) { 1351 struct in6_nbrinfo *nbi; 1352 1353 xo_open_instance("advertising-routers"); 1354 if (getnameinfo((struct sockaddr *)sin6, 1355 sin6->sin6_len, namebuf, sizeof(namebuf), 1356 NULL, 0, ninflags) != 0) 1357 strlcpy(namebuf, "?", sizeof(namebuf)); 1358 char abuf[INET6_ADDRSTRLEN]; 1359 inet_ntop(AF_INET6, &sin6->sin6_addr, abuf, 1360 sizeof(abuf)); 1361 1362 xo_emit(" {:hostname/%s}{e:address/%s}", 1363 namebuf, abuf); 1364 1365 nbi = getnbrinfo(&sin6->sin6_addr, 1366 p->if_index, 0); 1367 const char *state = ""; 1368 if (nbi) { 1369 switch (nbi->state) { 1370 case ND6_LLINFO_REACHABLE: 1371 case ND6_LLINFO_STALE: 1372 case ND6_LLINFO_DELAY: 1373 case ND6_LLINFO_PROBE: 1374 state = "reachable"; 1375 break; 1376 default: 1377 state = "unreachable"; 1378 } 1379 } else 1380 state = "no neighbor state"; 1381 xo_emit(" ({:state/%s})\n", state); 1382 sin6++; 1383 xo_close_instance("advertising-routers"); 1384 } 1385 xo_close_list("advertising-routers"); 1386 } else 1387 xo_emit(" No advertising router\n"); 1388 xo_close_instance("prefix-list"); 1389 } 1390 free(buf); 1391 1392 xo_close_list("prefix-list"); 1393 } 1394 1395 static void 1396 pfx_flush(void) 1397 { 1398 char dummyif[IFNAMSIZ+8]; 1399 int sock; 1400 1401 if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1402 xo_err(1, "socket"); 1403 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1404 if (ioctl(sock, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1405 xo_err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1406 1407 close(sock); 1408 } 1409 1410 static void 1411 rtr_flush(void) 1412 { 1413 char dummyif[IFNAMSIZ+8]; 1414 int sock; 1415 1416 if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1417 xo_err(1, "socket"); 1418 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1419 if (ioctl(sock, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1420 xo_err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1421 1422 close(sock); 1423 } 1424 1425 static void 1426 harmonize_rtr(void) 1427 { 1428 char dummyif[IFNAMSIZ+8]; 1429 int sock; 1430 1431 if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1432 xo_err(1, "socket"); 1433 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1434 if (ioctl(sock, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1435 xo_err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1436 1437 close(sock); 1438 } 1439 1440 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1441 static void 1442 setdefif(char *ifname) 1443 { 1444 struct in6_ndifreq ndifreq; 1445 unsigned int ifindex; 1446 int sock; 1447 1448 if (strcasecmp(ifname, "delete") == 0) 1449 ifindex = 0; 1450 else { 1451 if ((ifindex = if_nametoindex(ifname)) == 0) 1452 xo_err(1, "failed to resolve i/f index for %s", ifname); 1453 } 1454 1455 if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1456 xo_err(1, "socket"); 1457 1458 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1459 ndifreq.ifindex = ifindex; 1460 1461 if (ioctl(sock, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1462 xo_err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1463 1464 close(sock); 1465 } 1466 1467 static void 1468 getdefif(void) 1469 { 1470 struct in6_ndifreq ndifreq; 1471 char ifname[IFNAMSIZ+8]; 1472 int sock; 1473 1474 if ((sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1475 xo_err(1, "socket"); 1476 1477 memset(&ndifreq, 0, sizeof(ndifreq)); 1478 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1479 1480 if (ioctl(sock, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1481 xo_err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1482 1483 if (ndifreq.ifindex == 0) 1484 xo_emit("No default interface.\n"); 1485 else { 1486 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1487 xo_err(1, "failed to resolve ifname for index %lu", 1488 ndifreq.ifindex); 1489 xo_emit("ND default interface = {:default-interface/%s}\n", ifname); 1490 } 1491 1492 close(sock); 1493 } 1494 #endif /* SIOCSDEFIFACE_IN6 */ 1495 1496 char * 1497 sec2str(time_t total) 1498 { 1499 static char result[256]; 1500 int days, hours, mins, secs; 1501 int first = 1; 1502 char *p = result; 1503 char *ep = &result[sizeof(result)]; 1504 int n; 1505 1506 days = total / 3600 / 24; 1507 hours = (total / 3600) % 24; 1508 mins = (total / 60) % 60; 1509 secs = total % 60; 1510 1511 if (days) { 1512 first = 0; 1513 n = snprintf(p, ep - p, "%dd", days); 1514 if (n < 0 || n >= ep - p) 1515 return "?"; 1516 p += n; 1517 } 1518 if (!first || hours) { 1519 first = 0; 1520 n = snprintf(p, ep - p, "%dh", hours); 1521 if (n < 0 || n >= ep - p) 1522 return "?"; 1523 p += n; 1524 } 1525 if (!first || mins) { 1526 first = 0; 1527 n = snprintf(p, ep - p, "%dm", mins); 1528 if (n < 0 || n >= ep - p) 1529 return "?"; 1530 p += n; 1531 } 1532 snprintf(p, ep - p, "%ds", secs); 1533 1534 return(result); 1535 } 1536 1537 /* 1538 * Print the timestamp 1539 * from tcpdump/util.c 1540 */ 1541 void 1542 ts_print(const struct timeval *tvp) 1543 { 1544 int sec; 1545 1546 /* Default */ 1547 sec = (tvp->tv_sec + thiszone) % 86400; 1548 xo_emit("{:tv_sec/%lld}{:tv_usec/%lld}%02d:%02d:%02d.%06u ", 1549 tvp->tv_sec, tvp->tv_usec, 1550 sec / 3600, (sec % 3600) / 60, sec % 60, (u_int32_t)tvp->tv_usec); 1551 } 1552 1553 #undef NEXTADDR 1554