ndp.c revision 133249
1/* $FreeBSD: head/usr.sbin/ndp/ndp.c 133249 2004-08-07 04:28:56Z imp $ */ 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 <err.h> 111#include "gmt2local.h" 112 113/* packing rule for routing socket */ 114#define ROUNDUP(a) \ 115 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 116#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 117 118static pid_t pid; 119static int nflag; 120static int tflag; 121static int32_t thiszone; /* time difference with gmt */ 122static int s = -1; 123static int repeat = 0; 124 125char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 126char host_buf[NI_MAXHOST]; /* getnameinfo() */ 127char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 128 129int main __P((int, char **)); 130int file __P((char *)); 131void getsocket __P((void)); 132int set __P((int, char **)); 133void get __P((char *)); 134int delete __P((char *)); 135void dump __P((struct in6_addr *, int)); 136static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *, int, int)); 137static char *ether_str __P((struct sockaddr_dl *)); 138int ndp_ether_aton __P((char *, u_char *)); 139void usage __P((void)); 140int rtmsg __P((int)); 141void ifinfo __P((char *, int, char **)); 142void rtrlist __P((void)); 143void plist __P((void)); 144void pfx_flush __P((void)); 145void rtrlist __P((void)); 146void rtr_flush __P((void)); 147void harmonize_rtr __P((void)); 148#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 149static void getdefif __P((void)); 150static void setdefif __P((char *)); 151#endif 152static char *sec2str __P((time_t)); 153static char *ether_str __P((struct sockaddr_dl *)); 154static void ts_print __P((const struct timeval *)); 155 156#ifdef ICMPV6CTL_ND6_DRLIST 157static char *rtpref_str[] = { 158 "medium", /* 00 */ 159 "high", /* 01 */ 160 "rsv", /* 10 */ 161 "low" /* 11 */ 162}; 163#endif 164 165int mode = 0; 166char *arg = NULL; 167 168int 169main(argc, argv) 170 int argc; 171 char **argv; 172{ 173 int ch; 174 175 pid = getpid(); 176 thiszone = gmt2local(0); 177 while ((ch = getopt(argc, argv, "acd:f:Ii:nprstA:HPR")) != -1) 178 switch (ch) { 179 case 'a': 180 case 'c': 181 case 'p': 182 case 'r': 183 case 'H': 184 case 'P': 185 case 'R': 186 case 's': 187 case 'I': 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 if (mode) { 199 usage(); 200 /*NOTREACHED*/ 201 } 202 mode = ch; 203 arg = optarg; 204 break; 205 case 'n': 206 nflag = 1; 207 break; 208 case 't': 209 tflag = 1; 210 break; 211 case 'A': 212 if (mode) { 213 usage(); 214 /*NOTREACHED*/ 215 } 216 mode = 'a'; 217 repeat = atoi(optarg); 218 if (repeat < 0) { 219 usage(); 220 /*NOTREACHED*/ 221 } 222 break; 223 default: 224 usage(); 225 } 226 227 argc -= optind; 228 argv += optind; 229 230 switch (mode) { 231 case 'a': 232 case 'c': 233 if (argc != 0) { 234 usage(); 235 /*NOTREACHED*/ 236 } 237 dump(0, mode == 'c'); 238 break; 239 case 'd': 240 if (argc != 0) { 241 usage(); 242 /*NOTREACHED*/ 243 } 244 delete(arg); 245 break; 246 case 'I': 247#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 248 if (argc > 1) { 249 usage(); 250 /*NOTREACHED*/ 251 } else if (argc == 1) { 252 if (strcmp(*argv, "delete") == 0 || 253 if_nametoindex(*argv)) 254 setdefif(*argv); 255 else 256 errx(1, "invalid interface %s", *argv); 257 } 258 getdefif(); /* always call it to print the result */ 259 break; 260#else 261 errx(1, "not supported yet"); 262 /*NOTREACHED*/ 263#endif 264 case 'p': 265 if (argc != 0) { 266 usage(); 267 /*NOTREACHED*/ 268 } 269 plist(); 270 break; 271 case 'i': 272 ifinfo(arg, argc, argv); 273 break; 274 case 'r': 275 if (argc != 0) { 276 usage(); 277 /*NOTREACHED*/ 278 } 279 rtrlist(); 280 break; 281 case 's': 282 if (argc < 2 || argc > 4) 283 usage(); 284 exit(set(argc, argv) ? 1 : 0); 285 case 'H': 286 if (argc != 0) { 287 usage(); 288 /*NOTREACHED*/ 289 } 290 harmonize_rtr(); 291 break; 292 case 'P': 293 if (argc != 0) { 294 usage(); 295 /*NOTREACHED*/ 296 } 297 pfx_flush(); 298 break; 299 case 'R': 300 if (argc != 0) { 301 usage(); 302 /*NOTREACHED*/ 303 } 304 rtr_flush(); 305 break; 306 case 0: 307 if (argc != 1) { 308 usage(); 309 /*NOTREACHED*/ 310 } 311 get(argv[0]); 312 break; 313 } 314 exit(0); 315} 316 317/* 318 * Process a file to set standard ndp entries 319 */ 320int 321file(name) 322 char *name; 323{ 324 FILE *fp; 325 int i, retval; 326 char line[100], arg[5][50], *args[5]; 327 328 if ((fp = fopen(name, "r")) == NULL) { 329 fprintf(stderr, "ndp: cannot open %s\n", name); 330 exit(1); 331 } 332 args[0] = &arg[0][0]; 333 args[1] = &arg[1][0]; 334 args[2] = &arg[2][0]; 335 args[3] = &arg[3][0]; 336 args[4] = &arg[4][0]; 337 retval = 0; 338 while (fgets(line, 100, fp) != NULL) { 339 i = sscanf(line, "%49s %49s %49s %49s %49s", 340 arg[0], arg[1], arg[2], arg[3], arg[4]); 341 if (i < 2) { 342 fprintf(stderr, "ndp: bad line: %s\n", line); 343 retval = 1; 344 continue; 345 } 346 if (set(i, args)) 347 retval = 1; 348 } 349 fclose(fp); 350 return (retval); 351} 352 353void 354getsocket() 355{ 356 if (s < 0) { 357 s = socket(PF_ROUTE, SOCK_RAW, 0); 358 if (s < 0) { 359 err(1, "socket"); 360 /* NOTREACHED */ 361 } 362 } 363} 364 365struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 366struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 367struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 368int expire_time, flags, found_entry; 369struct { 370 struct rt_msghdr m_rtm; 371 char m_space[512]; 372} m_rtmsg; 373 374/* 375 * Set an individual neighbor cache entry 376 */ 377int 378set(argc, argv) 379 int argc; 380 char **argv; 381{ 382 register struct sockaddr_in6 *sin = &sin_m; 383 register struct sockaddr_dl *sdl; 384 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 385 struct addrinfo hints, *res; 386 int gai_error; 387 u_char *ea; 388 char *host = argv[0], *eaddr = argv[1]; 389 390 getsocket(); 391 argc -= 2; 392 argv += 2; 393 sdl_m = blank_sdl; 394 sin_m = blank_sin; 395 396 bzero(&hints, sizeof(hints)); 397 hints.ai_family = AF_INET6; 398 gai_error = getaddrinfo(host, NULL, &hints, &res); 399 if (gai_error) { 400 fprintf(stderr, "ndp: %s: %s\n", host, 401 gai_strerror(gai_error)); 402 return 1; 403 } 404 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 405#ifdef __KAME__ 406 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 407 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 408 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 409 } 410#endif 411 ea = (u_char *)LLADDR(&sdl_m); 412 if (ndp_ether_aton(eaddr, ea) == 0) 413 sdl_m.sdl_alen = 6; 414 flags = expire_time = 0; 415 while (argc-- > 0) { 416 if (strncmp(argv[0], "temp", 4) == 0) { 417 struct timeval time; 418 419 gettimeofday(&time, 0); 420 expire_time = time.tv_sec + 20 * 60; 421 } else if (strncmp(argv[0], "proxy", 5) == 0) 422 flags |= RTF_ANNOUNCE; 423 argv++; 424 } 425 if (rtmsg(RTM_GET) < 0) { 426 errx(1, "RTM_GET(%s) failed", host); 427 /* NOTREACHED */ 428 } 429 sin = (struct sockaddr_in6 *)(rtm + 1); 430 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 431 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 432 if (sdl->sdl_family == AF_LINK && 433 (rtm->rtm_flags & RTF_LLINFO) && 434 !(rtm->rtm_flags & RTF_GATEWAY)) { 435 switch (sdl->sdl_type) { 436 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 437 case IFT_ISO88024: case IFT_ISO88025: 438 goto overwrite; 439 } 440 } 441 /* 442 * IPv4 arp command retries with sin_other = SIN_PROXY here. 443 */ 444 fprintf(stderr, "set: cannot configure a new entry\n"); 445 return 1; 446 } 447 448overwrite: 449 if (sdl->sdl_family != AF_LINK) { 450 printf("cannot intuit interface index and type for %s\n", host); 451 return (1); 452 } 453 sdl_m.sdl_type = sdl->sdl_type; 454 sdl_m.sdl_index = sdl->sdl_index; 455 return (rtmsg(RTM_ADD)); 456} 457 458/* 459 * Display an individual neighbor cache entry 460 */ 461void 462get(host) 463 char *host; 464{ 465 struct sockaddr_in6 *sin = &sin_m; 466 struct addrinfo hints, *res; 467 int gai_error; 468 469 sin_m = blank_sin; 470 bzero(&hints, sizeof(hints)); 471 hints.ai_family = AF_INET6; 472 gai_error = getaddrinfo(host, NULL, &hints, &res); 473 if (gai_error) { 474 fprintf(stderr, "ndp: %s: %s\n", host, 475 gai_strerror(gai_error)); 476 return; 477 } 478 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 479#ifdef __KAME__ 480 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 481 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 482 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 483 } 484#endif 485 dump(&sin->sin6_addr, 0); 486 if (found_entry == 0) { 487 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 488 sizeof(host_buf), NULL ,0, 489 (nflag ? NI_NUMERICHOST : 0)); 490 printf("%s (%s) -- no entry\n", host, host_buf); 491 exit(1); 492 } 493} 494 495/* 496 * Delete a neighbor cache entry 497 */ 498int 499delete(host) 500 char *host; 501{ 502 struct sockaddr_in6 *sin = &sin_m; 503 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 504 struct sockaddr_dl *sdl; 505 struct addrinfo hints, *res; 506 int gai_error; 507 508 getsocket(); 509 sin_m = blank_sin; 510 511 bzero(&hints, sizeof(hints)); 512 hints.ai_family = AF_INET6; 513 gai_error = getaddrinfo(host, NULL, &hints, &res); 514 if (gai_error) { 515 fprintf(stderr, "ndp: %s: %s\n", host, 516 gai_strerror(gai_error)); 517 return 1; 518 } 519 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 520#ifdef __KAME__ 521 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 522 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 523 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 524 } 525#endif 526 if (rtmsg(RTM_GET) < 0) { 527 errx(1, "RTM_GET(%s) failed", host); 528 /* NOTREACHED */ 529 } 530 sin = (struct sockaddr_in6 *)(rtm + 1); 531 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 532 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 533 if (sdl->sdl_family == AF_LINK && 534 (rtm->rtm_flags & RTF_LLINFO) && 535 !(rtm->rtm_flags & RTF_GATEWAY)) { 536 goto delete; 537 } 538 /* 539 * IPv4 arp command retries with sin_other = SIN_PROXY here. 540 */ 541 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 542 return 1; 543 } 544 545delete: 546 if (sdl->sdl_family != AF_LINK) { 547 printf("cannot locate %s\n", host); 548 return (1); 549 } 550 if (rtmsg(RTM_DELETE) == 0) { 551 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 552 553#ifdef __KAME__ 554 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 555 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 556 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 557 } 558#endif 559 getnameinfo((struct sockaddr *)&s6, 560 s6.sin6_len, host_buf, 561 sizeof(host_buf), NULL, 0, 562 (nflag ? NI_NUMERICHOST : 0)); 563 printf("%s (%s) deleted\n", host, host_buf); 564 } 565 566 return 0; 567} 568 569#define W_ADDR 36 570#define W_LL 17 571#define W_IF 6 572 573/* 574 * Dump the entire neighbor cache 575 */ 576void 577dump(addr, cflag) 578 struct in6_addr *addr; 579 int cflag; 580{ 581 int mib[6]; 582 size_t needed; 583 char *lim, *buf, *next; 584 struct rt_msghdr *rtm; 585 struct sockaddr_in6 *sin; 586 struct sockaddr_dl *sdl; 587 extern int h_errno; 588 struct in6_nbrinfo *nbi; 589 struct timeval time; 590 int addrwidth; 591 int llwidth; 592 int ifwidth; 593 char flgbuf[8]; 594 char *ifname; 595 596 /* Print header */ 597 if (!tflag && !cflag) 598 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %5s\n", 599 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 600 W_IF, W_IF, "Netif", "Expire", "S", "Flags"); 601 602again:; 603 mib[0] = CTL_NET; 604 mib[1] = PF_ROUTE; 605 mib[2] = 0; 606 mib[3] = AF_INET6; 607 mib[4] = NET_RT_FLAGS; 608 mib[5] = RTF_LLINFO; 609 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 610 err(1, "sysctl(PF_ROUTE estimate)"); 611 if (needed > 0) { 612 if ((buf = malloc(needed)) == NULL) 613 err(1, "malloc"); 614 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 615 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 616 lim = buf + needed; 617 } else 618 buf = lim = NULL; 619 620 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 621 int isrouter = 0, prbs = 0; 622 623 rtm = (struct rt_msghdr *)next; 624 sin = (struct sockaddr_in6 *)(rtm + 1); 625 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 626 627 /* 628 * Some OSes can produce a route that has the LINK flag but 629 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 630 * and BSD/OS, where xx is not the interface identifier on 631 * lo0). Such routes entry would annoy getnbrinfo() below, 632 * so we skip them. 633 * XXX: such routes should have the GATEWAY flag, not the 634 * LINK flag. However, there is rotten routing software 635 * that advertises all routes that have the GATEWAY flag. 636 * Thus, KAME kernel intentionally does not set the LINK flag. 637 * What is to be fixed is not ndp, but such routing software 638 * (and the kernel workaround)... 639 */ 640 if (sdl->sdl_family != AF_LINK) 641 continue; 642 643 if (!(rtm->rtm_flags & RTF_HOST)) 644 continue; 645 646 if (addr) { 647 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 648 continue; 649 found_entry = 1; 650 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 651 continue; 652 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 653 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 654 /* XXX: should scope id be filled in the kernel? */ 655 if (sin->sin6_scope_id == 0) 656 sin->sin6_scope_id = sdl->sdl_index; 657#ifdef __KAME__ 658 /* KAME specific hack; removed the embedded id */ 659 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 660#endif 661 } 662 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 663 sizeof(host_buf), NULL, 0, (nflag ? NI_NUMERICHOST : 0)); 664 if (cflag) { 665#ifdef RTF_WASCLONED 666 if (rtm->rtm_flags & RTF_WASCLONED) 667 delete(host_buf); 668#elif defined(RTF_CLONED) 669 if (rtm->rtm_flags & RTF_CLONED) 670 delete(host_buf); 671#else 672 delete(host_buf); 673#endif 674 continue; 675 } 676 gettimeofday(&time, 0); 677 if (tflag) 678 ts_print(&time); 679 680 addrwidth = strlen(host_buf); 681 if (addrwidth < W_ADDR) 682 addrwidth = W_ADDR; 683 llwidth = strlen(ether_str(sdl)); 684 if (W_ADDR + W_LL - addrwidth > llwidth) 685 llwidth = W_ADDR + W_LL - addrwidth; 686 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 687 if (!ifname) 688 ifname = "?"; 689 ifwidth = strlen(ifname); 690 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 691 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 692 693 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 694 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 695 696 /* Print neighbor discovery specific informations */ 697 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 698 if (nbi) { 699 if (nbi->expire > time.tv_sec) { 700 printf(" %-9.9s", 701 sec2str(nbi->expire - time.tv_sec)); 702 } else if (nbi->expire == 0) 703 printf(" %-9.9s", "permanent"); 704 else 705 printf(" %-9.9s", "expired"); 706 707 switch (nbi->state) { 708 case ND6_LLINFO_NOSTATE: 709 printf(" N"); 710 break; 711#ifdef ND6_LLINFO_WAITDELETE 712 case ND6_LLINFO_WAITDELETE: 713 printf(" W"); 714 break; 715#endif 716 case ND6_LLINFO_INCOMPLETE: 717 printf(" I"); 718 break; 719 case ND6_LLINFO_REACHABLE: 720 printf(" R"); 721 break; 722 case ND6_LLINFO_STALE: 723 printf(" S"); 724 break; 725 case ND6_LLINFO_DELAY: 726 printf(" D"); 727 break; 728 case ND6_LLINFO_PROBE: 729 printf(" P"); 730 break; 731 default: 732 printf(" ?"); 733 break; 734 } 735 736 isrouter = nbi->isrouter; 737 prbs = nbi->asked; 738 } else { 739 warnx("failed to get neighbor information"); 740 printf(" "); 741 } 742 743 /* 744 * other flags. R: router, P: proxy, W: ?? 745 */ 746 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 747 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 748 isrouter ? "R" : "", 749 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 750 } else { 751 sin = (struct sockaddr_in6 *) 752 (sdl->sdl_len + (char *)sdl); 753#if 0 /* W and P are mystery even for us */ 754 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 755 isrouter ? "R" : "", 756 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 757 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 758 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 759#else 760 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 761 isrouter ? "R" : "", 762 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 763#endif 764 } 765 printf(" %s", flgbuf); 766 767 if (prbs) 768 printf(" %d", prbs); 769 770 printf("\n"); 771 } 772 if (buf != NULL) 773 free(buf); 774 775 if (repeat) { 776 printf("\n"); 777 fflush(stdout); 778 sleep(repeat); 779 goto again; 780 } 781} 782 783static struct in6_nbrinfo * 784getnbrinfo(addr, ifindex, warning) 785 struct in6_addr *addr; 786 int ifindex; 787 int warning; 788{ 789 static struct in6_nbrinfo nbi; 790 int s; 791 792 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 793 err(1, "socket"); 794 795 bzero(&nbi, sizeof(nbi)); 796 if_indextoname(ifindex, nbi.ifname); 797 nbi.addr = *addr; 798 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 799 if (warning) 800 warn("ioctl(SIOCGNBRINFO_IN6)"); 801 close(s); 802 return(NULL); 803 } 804 805 close(s); 806 return(&nbi); 807} 808 809static char * 810ether_str(sdl) 811 struct sockaddr_dl *sdl; 812{ 813 static char hbuf[NI_MAXHOST]; 814 u_char *cp; 815 816 if (sdl->sdl_alen) { 817 cp = (u_char *)LLADDR(sdl); 818 snprintf(hbuf, sizeof(hbuf), "%x:%x:%x:%x:%x:%x", 819 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 820 } else 821 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 822 823 return(hbuf); 824} 825 826int 827ndp_ether_aton(a, n) 828 char *a; 829 u_char *n; 830{ 831 int i, o[6]; 832 833 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 834 &o[3], &o[4], &o[5]); 835 if (i != 6) { 836 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 837 return (1); 838 } 839 for (i = 0; i < 6; i++) 840 n[i] = o[i]; 841 return (0); 842} 843 844void 845usage() 846{ 847 printf("usage: ndp [-nt] hostname\n"); 848 printf(" ndp [-nt] -a | -c | -p | -r | -H | -P | -R\n"); 849 printf(" ndp [-nt] -A wait\n"); 850 printf(" ndp [-nt] -d hostname\n"); 851 printf(" ndp [-nt] -f filename\n"); 852 printf(" ndp [-nt] -i interface [flags...]\n"); 853#ifdef SIOCSDEFIFACE_IN6 854 printf(" ndp [-nt] -I [interface|delete]\n"); 855#endif 856 printf(" ndp [-nt] -s nodename etheraddr [temp] [proxy]\n"); 857 exit(1); 858} 859 860int 861rtmsg(cmd) 862 int cmd; 863{ 864 static int seq; 865 int rlen; 866 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 867 register char *cp = m_rtmsg.m_space; 868 register int l; 869 870 errno = 0; 871 if (cmd == RTM_DELETE) 872 goto doit; 873 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 874 rtm->rtm_flags = flags; 875 rtm->rtm_version = RTM_VERSION; 876 877 switch (cmd) { 878 default: 879 fprintf(stderr, "ndp: internal wrong cmd\n"); 880 exit(1); 881 case RTM_ADD: 882 rtm->rtm_addrs |= RTA_GATEWAY; 883 if (expire_time) { 884 rtm->rtm_rmx.rmx_expire = expire_time; 885 rtm->rtm_inits = RTV_EXPIRE; 886 } 887 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 888 if (rtm->rtm_flags & RTF_ANNOUNCE) { 889 rtm->rtm_flags &= ~RTF_HOST; 890 rtm->rtm_addrs |= RTA_NETMASK; 891 } 892 /* FALLTHROUGH */ 893 case RTM_GET: 894 rtm->rtm_addrs |= RTA_DST; 895 } 896#define NEXTADDR(w, s) \ 897 if (rtm->rtm_addrs & (w)) { \ 898 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 899 900 NEXTADDR(RTA_DST, sin_m); 901 NEXTADDR(RTA_GATEWAY, sdl_m); 902 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 903 NEXTADDR(RTA_NETMASK, so_mask); 904 905 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 906doit: 907 l = rtm->rtm_msglen; 908 rtm->rtm_seq = ++seq; 909 rtm->rtm_type = cmd; 910 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 911 if (errno != ESRCH || cmd != RTM_DELETE) { 912 err(1, "writing to routing socket"); 913 /* NOTREACHED */ 914 } 915 } 916 do { 917 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 918 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 919 if (l < 0) 920 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 921 strerror(errno)); 922 return (0); 923} 924 925void 926ifinfo(ifname, argc, argv) 927 char *ifname; 928 int argc; 929 char **argv; 930{ 931 struct in6_ndireq nd; 932 int i, s; 933 u_int32_t newflags; 934#ifdef IPV6CTL_USETEMPADDR 935 u_int8_t nullbuf[8]; 936#endif 937 938 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 939 err(1, "socket"); 940 /* NOTREACHED */ 941 } 942 bzero(&nd, sizeof(nd)); 943 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 944 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 945 err(1, "ioctl(SIOCGIFINFO_IN6)"); 946 /* NOTREACHED */ 947 } 948#define ND nd.ndi 949 newflags = ND.flags; 950 for (i = 0; i < argc; i++) { 951 int clear = 0; 952 char *cp = argv[i]; 953 954 if (*cp == '-') { 955 clear = 1; 956 cp++; 957 } 958 959#define SETFLAG(s, f) \ 960 do {\ 961 if (strcmp(cp, (s)) == 0) {\ 962 if (clear)\ 963 newflags &= ~(f);\ 964 else\ 965 newflags |= (f);\ 966 }\ 967 } while (0) 968 SETFLAG("nud", ND6_IFF_PERFORMNUD); 969#ifdef ND6_IFF_ACCEPT_RTADV 970 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 971#endif 972#ifdef ND6_IFF_PREFER_SOURCE 973 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 974#endif 975 976 ND.flags = newflags; 977 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 978 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 979 /* NOTREACHED */ 980 } 981#undef SETFLAG 982 } 983 984 if (!ND.initialized) { 985 errx(1, "%s: not initialized yet", ifname); 986 /* NOTREACHED */ 987 } 988 989 printf("linkmtu=%d", ND.linkmtu); 990 printf(", maxmtu=%d", ND.maxmtu); 991 printf(", curhlim=%d", ND.chlim); 992 printf(", basereachable=%ds%dms", 993 ND.basereachable / 1000, ND.basereachable % 1000); 994 printf(", reachable=%ds", ND.reachable); 995 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 996#ifdef IPV6CTL_USETEMPADDR 997 memset(nullbuf, 0, sizeof(nullbuf)); 998 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 999 int j; 1000 u_int8_t *rbuf; 1001 1002 for (i = 0; i < 3; i++) { 1003 switch (i) { 1004 case 0: 1005 printf("\nRandom seed(0): "); 1006 rbuf = ND.randomseed0; 1007 break; 1008 case 1: 1009 printf("\nRandom seed(1): "); 1010 rbuf = ND.randomseed1; 1011 break; 1012 case 2: 1013 printf("\nRandom ID: "); 1014 rbuf = ND.randomid; 1015 break; 1016 } 1017 for (j = 0; j < 8; j++) 1018 printf("%02x", rbuf[j]); 1019 } 1020 } 1021#endif 1022 if (ND.flags) { 1023 printf("\nFlags: "); 1024 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1025 printf("nud "); 1026#ifdef ND6_IFF_ACCEPT_RTADV 1027 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1028 printf("accept_rtadv "); 1029#endif 1030#ifdef ND6_IFF_PREFER_SOURCE 1031 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1032 printf("prefer_source "); 1033#endif 1034 } 1035 putc('\n', stdout); 1036#undef ND 1037 1038 close(s); 1039} 1040 1041#ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1042#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1043#endif 1044 1045void 1046rtrlist() 1047{ 1048#ifdef ICMPV6CTL_ND6_DRLIST 1049 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1050 char *buf; 1051 struct in6_defrouter *p, *ep; 1052 size_t l; 1053 struct timeval time; 1054 1055 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1056 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1057 /*NOTREACHED*/ 1058 } 1059 buf = malloc(l); 1060 if (!buf) { 1061 err(1, "malloc"); 1062 /*NOTREACHED*/ 1063 } 1064 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1065 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1066 /*NOTREACHED*/ 1067 } 1068 1069 ep = (struct in6_defrouter *)(buf + l); 1070 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1071 int rtpref; 1072 1073 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1074 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1075 (nflag ? NI_NUMERICHOST : 0)) != 0) 1076 strlcpy(host_buf, "?", sizeof(host_buf)); 1077 1078 printf("%s if=%s", host_buf, 1079 if_indextoname(p->if_index, ifix_buf)); 1080 printf(", flags=%s%s", 1081 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1082 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1083 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1084 printf(", pref=%s", rtpref_str[rtpref]); 1085 1086 gettimeofday(&time, 0); 1087 if (p->expire == 0) 1088 printf(", expire=Never\n"); 1089 else 1090 printf(", expire=%s\n", 1091 sec2str(p->expire - time.tv_sec)); 1092 } 1093 free(buf); 1094#else 1095 struct in6_drlist dr; 1096 int s, i; 1097 struct timeval time; 1098 1099 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1100 err(1, "socket"); 1101 /* NOTREACHED */ 1102 } 1103 bzero(&dr, sizeof(dr)); 1104 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1105 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1106 err(1, "ioctl(SIOCGDRLST_IN6)"); 1107 /* NOTREACHED */ 1108 } 1109#define DR dr.defrouter[i] 1110 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1111 struct sockaddr_in6 sin6; 1112 1113 bzero(&sin6, sizeof(sin6)); 1114 sin6.sin6_family = AF_INET6; 1115 sin6.sin6_len = sizeof(sin6); 1116 sin6.sin6_addr = DR.rtaddr; 1117 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1118 sizeof(host_buf), NULL, 0, 1119 (nflag ? NI_NUMERICHOST : 0)); 1120 1121 printf("%s if=%s", host_buf, 1122 if_indextoname(DR.if_index, ifix_buf)); 1123 printf(", flags=%s%s", 1124 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1125 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1126 gettimeofday(&time, 0); 1127 if (DR.expire == 0) 1128 printf(", expire=Never\n"); 1129 else 1130 printf(", expire=%s\n", 1131 sec2str(DR.expire - time.tv_sec)); 1132 } 1133#undef DR 1134 close(s); 1135#endif 1136} 1137 1138void 1139plist() 1140{ 1141#ifdef ICMPV6CTL_ND6_PRLIST 1142 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1143 char *buf; 1144 struct in6_prefix *p, *ep, *n; 1145 struct sockaddr_in6 *advrtr; 1146 size_t l; 1147 struct timeval time; 1148 const int niflags = NI_NUMERICHOST; 1149 int ninflags = nflag ? NI_NUMERICHOST : 0; 1150 char namebuf[NI_MAXHOST]; 1151 1152 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1153 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1154 /*NOTREACHED*/ 1155 } 1156 buf = malloc(l); 1157 if (!buf) { 1158 err(1, "malloc"); 1159 /*NOTREACHED*/ 1160 } 1161 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1162 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1163 /*NOTREACHED*/ 1164 } 1165 1166 ep = (struct in6_prefix *)(buf + l); 1167 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1168 advrtr = (struct sockaddr_in6 *)(p + 1); 1169 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1170 1171 if (getnameinfo((struct sockaddr *)&p->prefix, 1172 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1173 NULL, 0, niflags) != 0) 1174 strlcpy(namebuf, "?", sizeof(namebuf)); 1175 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1176 if_indextoname(p->if_index, ifix_buf)); 1177 1178 gettimeofday(&time, 0); 1179 /* 1180 * meaning of fields, especially flags, is very different 1181 * by origin. notify the difference to the users. 1182 */ 1183 printf("flags=%s%s%s%s%s", 1184 p->raflags.onlink ? "L" : "", 1185 p->raflags.autonomous ? "A" : "", 1186 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1187 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1188#ifdef NDPRF_HOME 1189 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1190#else 1191 "" 1192#endif 1193 ); 1194 if (p->vltime == ND6_INFINITE_LIFETIME) 1195 printf(" vltime=infinity"); 1196 else 1197 printf(" vltime=%lu", (unsigned long)p->vltime); 1198 if (p->pltime == ND6_INFINITE_LIFETIME) 1199 printf(", pltime=infinity"); 1200 else 1201 printf(", pltime=%lu", (unsigned long)p->pltime); 1202 if (p->expire == 0) 1203 printf(", expire=Never"); 1204 else if (p->expire >= time.tv_sec) 1205 printf(", expire=%s", 1206 sec2str(p->expire - time.tv_sec)); 1207 else 1208 printf(", expired"); 1209 printf(", ref=%d", p->refcnt); 1210 printf("\n"); 1211 /* 1212 * "advertising router" list is meaningful only if the prefix 1213 * information is from RA. 1214 */ 1215 if (p->advrtrs) { 1216 int j; 1217 struct sockaddr_in6 *sin6; 1218 1219 sin6 = advrtr; 1220 printf(" advertised by\n"); 1221 for (j = 0; j < p->advrtrs; j++) { 1222 struct in6_nbrinfo *nbi; 1223 1224 if (getnameinfo((struct sockaddr *)sin6, 1225 sin6->sin6_len, namebuf, sizeof(namebuf), 1226 NULL, 0, ninflags) != 0) 1227 strlcpy(namebuf, "?", sizeof(namebuf)); 1228 printf(" %s", namebuf); 1229 1230 nbi = getnbrinfo(&sin6->sin6_addr, 1231 p->if_index, 0); 1232 if (nbi) { 1233 switch (nbi->state) { 1234 case ND6_LLINFO_REACHABLE: 1235 case ND6_LLINFO_STALE: 1236 case ND6_LLINFO_DELAY: 1237 case ND6_LLINFO_PROBE: 1238 printf(" (reachable)\n"); 1239 break; 1240 default: 1241 printf(" (unreachable)\n"); 1242 } 1243 } else 1244 printf(" (no neighbor state)\n"); 1245 sin6++; 1246 } 1247 } else 1248 printf(" No advertising router\n"); 1249 } 1250 free(buf); 1251#else 1252 struct in6_prlist pr; 1253 int s, i; 1254 struct timeval time; 1255 1256 gettimeofday(&time, 0); 1257 1258 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1259 err(1, "socket"); 1260 /* NOTREACHED */ 1261 } 1262 bzero(&pr, sizeof(pr)); 1263 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1264 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1265 err(1, "ioctl(SIOCGPRLST_IN6)"); 1266 /* NOTREACHED */ 1267 } 1268#define PR pr.prefix[i] 1269 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1270 struct sockaddr_in6 p6; 1271 char namebuf[NI_MAXHOST]; 1272 int niflags; 1273 1274#ifdef NDPRF_ONLINK 1275 p6 = PR.prefix; 1276#else 1277 memset(&p6, 0, sizeof(p6)); 1278 p6.sin6_family = AF_INET6; 1279 p6.sin6_len = sizeof(p6); 1280 p6.sin6_addr = PR.prefix; 1281#endif 1282 1283 /* 1284 * copy link index to sin6_scope_id field. 1285 * XXX: KAME specific. 1286 */ 1287 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1288 u_int16_t linkid; 1289 1290 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1291 sizeof(linkid)); 1292 linkid = ntohs(linkid); 1293 p6.sin6_scope_id = linkid; 1294 p6.sin6_addr.s6_addr[2] = 0; 1295 p6.sin6_addr.s6_addr[3] = 0; 1296 } 1297 1298 niflags = NI_NUMERICHOST; 1299 if (getnameinfo((struct sockaddr *)&p6, 1300 sizeof(p6), namebuf, sizeof(namebuf), 1301 NULL, 0, niflags)) { 1302 warnx("getnameinfo failed"); 1303 continue; 1304 } 1305 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1306 if_indextoname(PR.if_index, ifix_buf)); 1307 1308 gettimeofday(&time, 0); 1309 /* 1310 * meaning of fields, especially flags, is very different 1311 * by origin. notify the difference to the users. 1312 */ 1313#if 0 1314 printf(" %s", 1315 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1316#endif 1317#ifdef NDPRF_ONLINK 1318 printf("flags=%s%s%s%s%s", 1319 PR.raflags.onlink ? "L" : "", 1320 PR.raflags.autonomous ? "A" : "", 1321 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1322 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1323#ifdef NDPRF_HOME 1324 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1325#else 1326 "" 1327#endif 1328 ); 1329#else 1330 printf("flags=%s%s", 1331 PR.raflags.onlink ? "L" : "", 1332 PR.raflags.autonomous ? "A" : ""); 1333#endif 1334 if (PR.vltime == ND6_INFINITE_LIFETIME) 1335 printf(" vltime=infinity"); 1336 else 1337 printf(" vltime=%lu", PR.vltime); 1338 if (PR.pltime == ND6_INFINITE_LIFETIME) 1339 printf(", pltime=infinity"); 1340 else 1341 printf(", pltime=%lu", PR.pltime); 1342 if (PR.expire == 0) 1343 printf(", expire=Never"); 1344 else if (PR.expire >= time.tv_sec) 1345 printf(", expire=%s", 1346 sec2str(PR.expire - time.tv_sec)); 1347 else 1348 printf(", expired"); 1349#ifdef NDPRF_ONLINK 1350 printf(", ref=%d", PR.refcnt); 1351#endif 1352#if 0 1353 switch (PR.origin) { 1354 case PR_ORIG_RA: 1355 printf(", origin=RA"); 1356 break; 1357 case PR_ORIG_RR: 1358 printf(", origin=RR"); 1359 break; 1360 case PR_ORIG_STATIC: 1361 printf(", origin=static"); 1362 break; 1363 case PR_ORIG_KERNEL: 1364 printf(", origin=kernel"); 1365 break; 1366 default: 1367 printf(", origin=?"); 1368 break; 1369 } 1370#endif 1371 printf("\n"); 1372 /* 1373 * "advertising router" list is meaningful only if the prefix 1374 * information is from RA. 1375 */ 1376 if (0 && /* prefix origin is almost obsolted */ 1377 PR.origin != PR_ORIG_RA) 1378 ; 1379 else if (PR.advrtrs) { 1380 int j; 1381 printf(" advertised by\n"); 1382 for (j = 0; j < PR.advrtrs; j++) { 1383 struct sockaddr_in6 sin6; 1384 struct in6_nbrinfo *nbi; 1385 1386 bzero(&sin6, sizeof(sin6)); 1387 sin6.sin6_family = AF_INET6; 1388 sin6.sin6_len = sizeof(sin6); 1389 sin6.sin6_addr = PR.advrtr[j]; 1390 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1391 getnameinfo((struct sockaddr *)&sin6, 1392 sin6.sin6_len, host_buf, 1393 sizeof(host_buf), NULL, 0, 1394 (nflag ? NI_NUMERICHOST : 0)); 1395 printf(" %s", host_buf); 1396 1397 nbi = getnbrinfo(&sin6.sin6_addr, 1398 PR.if_index, 0); 1399 if (nbi) { 1400 switch (nbi->state) { 1401 case ND6_LLINFO_REACHABLE: 1402 case ND6_LLINFO_STALE: 1403 case ND6_LLINFO_DELAY: 1404 case ND6_LLINFO_PROBE: 1405 printf(" (reachable)\n"); 1406 break; 1407 default: 1408 printf(" (unreachable)\n"); 1409 } 1410 } else 1411 printf(" (no neighbor state)\n"); 1412 } 1413 if (PR.advrtrs > DRLSTSIZ) 1414 printf(" and %d routers\n", 1415 PR.advrtrs - DRLSTSIZ); 1416 } else 1417 printf(" No advertising router\n"); 1418 } 1419#undef PR 1420 close(s); 1421#endif 1422} 1423 1424void 1425pfx_flush() 1426{ 1427 char dummyif[IFNAMSIZ+8]; 1428 int s; 1429 1430 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1431 err(1, "socket"); 1432 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1433 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1434 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1435} 1436 1437void 1438rtr_flush() 1439{ 1440 char dummyif[IFNAMSIZ+8]; 1441 int s; 1442 1443 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1444 err(1, "socket"); 1445 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1446 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1447 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1448 1449 close(s); 1450} 1451 1452void 1453harmonize_rtr() 1454{ 1455 char dummyif[IFNAMSIZ+8]; 1456 int s; 1457 1458 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1459 err(1, "socket"); 1460 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1461 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1462 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1463 1464 close(s); 1465} 1466 1467#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1468static void 1469setdefif(ifname) 1470 char *ifname; 1471{ 1472 struct in6_ndifreq ndifreq; 1473 unsigned int ifindex; 1474 1475 if (strcasecmp(ifname, "delete") == 0) 1476 ifindex = 0; 1477 else { 1478 if ((ifindex = if_nametoindex(ifname)) == 0) 1479 err(1, "failed to resolve i/f index for %s", ifname); 1480 } 1481 1482 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1483 err(1, "socket"); 1484 1485 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1486 ndifreq.ifindex = ifindex; 1487 1488 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1489 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1490 1491 close(s); 1492} 1493 1494static void 1495getdefif() 1496{ 1497 struct in6_ndifreq ndifreq; 1498 char ifname[IFNAMSIZ+8]; 1499 1500 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1501 err(1, "socket"); 1502 1503 memset(&ndifreq, 0, sizeof(ndifreq)); 1504 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1505 1506 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1507 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1508 1509 if (ndifreq.ifindex == 0) 1510 printf("No default interface.\n"); 1511 else { 1512 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1513 err(1, "failed to resolve ifname for index %lu", 1514 ndifreq.ifindex); 1515 printf("ND default interface = %s\n", ifname); 1516 } 1517 1518 close(s); 1519} 1520#endif 1521 1522static char * 1523sec2str(total) 1524 time_t total; 1525{ 1526 static char result[256]; 1527 int days, hours, mins, secs; 1528 int first = 1; 1529 char *p = result; 1530 char *ep = &result[sizeof(result)]; 1531 int n; 1532 1533 days = total / 3600 / 24; 1534 hours = (total / 3600) % 24; 1535 mins = (total / 60) % 60; 1536 secs = total % 60; 1537 1538 if (days) { 1539 first = 0; 1540 n = snprintf(p, ep - p, "%dd", days); 1541 if (n < 0 || n >= ep - p) 1542 return "?"; 1543 p += n; 1544 } 1545 if (!first || hours) { 1546 first = 0; 1547 n = snprintf(p, ep - p, "%dh", hours); 1548 if (n < 0 || n >= ep - p) 1549 return "?"; 1550 p += n; 1551 } 1552 if (!first || mins) { 1553 first = 0; 1554 n = snprintf(p, ep - p, "%dm", mins); 1555 if (n < 0 || n >= ep - p) 1556 return "?"; 1557 p += n; 1558 } 1559 snprintf(p, ep - p, "%ds", secs); 1560 1561 return(result); 1562} 1563 1564/* 1565 * Print the timestamp 1566 * from tcpdump/util.c 1567 */ 1568static void 1569ts_print(tvp) 1570 const struct timeval *tvp; 1571{ 1572 int s; 1573 1574 /* Default */ 1575 s = (tvp->tv_sec + thiszone) % 86400; 1576 (void)printf("%02d:%02d:%02d.%06u ", 1577 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1578} 1579