ndp.c revision 118498
1/* $FreeBSD: head/usr.sbin/ndp/ndp.c 118498 2003-08-05 14:57:11Z ume $ */ 2/* $KAME: ndp.c,v 1.65 2001/05/08 04:36:34 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#include <sys/queue.h> 88 89#include <net/if.h> 90#include <net/if_var.h> 91#include <net/if_dl.h> 92#include <net/if_types.h> 93#include <net/route.h> 94 95#include <netinet/in.h> 96#include <netinet/if_ether.h> 97 98#include <netinet/icmp6.h> 99#include <netinet6/in6_var.h> 100#include <netinet6/nd6.h> 101 102#include <arpa/inet.h> 103 104#include <netdb.h> 105#include <errno.h> 106#include <nlist.h> 107#include <stdio.h> 108#include <string.h> 109#include <paths.h> 110#include <err.h> 111#include <stdlib.h> 112#include <fcntl.h> 113#include <unistd.h> 114#include "gmt2local.h" 115 116#ifndef NI_WITHSCOPEID 117#define NI_WITHSCOPEID 0 118#endif 119 120/* packing rule for routing socket */ 121#define ROUNDUP(a) \ 122 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 123#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 124 125static pid_t pid; 126static int cflag; 127static int nflag; 128static int tflag; 129static int32_t thiszone; /* time difference with gmt */ 130static int s = -1; 131static int repeat = 0; 132 133char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 134char host_buf[NI_MAXHOST]; /* getnameinfo() */ 135char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 136 137int main __P((int, char **)); 138int file __P((char *)); 139void getsocket __P((void)); 140int set __P((int, char **)); 141void get __P((char *)); 142int delete __P((char *)); 143void dump __P((struct in6_addr *)); 144static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *addr, 145 int ifindex, int)); 146static char *ether_str __P((struct sockaddr_dl *)); 147int ndp_ether_aton __P((char *, u_char *)); 148void usage __P((void)); 149int rtmsg __P((int)); 150void ifinfo __P((int, char **)); 151void rtrlist __P((void)); 152void plist __P((void)); 153void pfx_flush __P((void)); 154void rtrlist __P((void)); 155void rtr_flush __P((void)); 156void harmonize_rtr __P((void)); 157#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 158static void getdefif __P((void)); 159static void setdefif __P((char *)); 160#endif 161static char *sec2str __P((time_t t)); 162static char *ether_str __P((struct sockaddr_dl *sdl)); 163static void ts_print __P((const struct timeval *)); 164 165static char *rtpref_str[] = { 166 "medium", /* 00 */ 167 "high", /* 01 */ 168 "rsv", /* 10 */ 169 "low" /* 11 */ 170}; 171 172int 173main(argc, argv) 174 int argc; 175 char **argv; 176{ 177 int ch; 178 int aflag = 0, dflag = 0, sflag = 0, Hflag = 0, 179 pflag = 0, rflag = 0, Pflag = 0, Rflag = 0; 180 181 pid = getpid(); 182 thiszone = gmt2local(0); 183 while ((ch = getopt(argc, argv, "acndfIilprstA:HPR")) != -1) 184 switch ((char)ch) { 185 case 'a': 186 aflag = 1; 187 break; 188 case 'c': 189 cflag = 1; 190 break; 191 case 'd': 192 dflag = 1; 193 break; 194 case 'I': 195#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 196 if (argc > 2) 197 setdefif(argv[2]); 198 getdefif(); /* always call it to print the result */ 199 exit(0); 200#else 201 errx(1, "not supported yet"); 202 /*NOTREACHED*/ 203#endif 204 case 'i' : 205 argc -= optind; 206 argv += optind; 207 if (argc < 1) 208 usage(); 209 ifinfo(argc, argv); 210 exit(0); 211 case 'n': 212 nflag = 1; 213 continue; 214 case 'p': 215 pflag = 1; 216 break; 217 case 'f' : 218 if (argc != 3) 219 usage(); 220 file(argv[2]); 221 exit(0); 222 case 'l' : 223 /* obsolete, ignored */ 224 break; 225 case 'r' : 226 rflag = 1; 227 break; 228 case 's': 229 sflag = 1; 230 break; 231 case 't': 232 tflag = 1; 233 break; 234 case 'A': 235 aflag = 1; 236 repeat = atoi(optarg); 237 if (repeat < 0) 238 usage(); 239 break; 240 case 'H' : 241 Hflag = 1; 242 break; 243 case 'P': 244 Pflag = 1; 245 break; 246 case 'R': 247 Rflag = 1; 248 break; 249 default: 250 usage(); 251 } 252 253 argc -= optind; 254 argv += optind; 255 256 if (aflag || cflag) { 257 dump(0); 258 exit(0); 259 } 260 if (dflag) { 261 if (argc != 1) 262 usage(); 263 delete(argv[0]); 264 exit(0); 265 } 266 if (pflag) { 267 plist(); 268 exit(0); 269 } 270 if (rflag) { 271 rtrlist(); 272 exit(0); 273 } 274 if (sflag) { 275 if (argc < 2 || argc > 4) 276 usage(); 277 exit(set(argc, argv) ? 1 : 0); 278 } 279 if (Hflag) { 280 harmonize_rtr(); 281 exit(0); 282 } 283 if (Pflag) { 284 pfx_flush(); 285 exit(0); 286 } 287 if (Rflag) { 288 rtr_flush(); 289 exit(0); 290 } 291 292 if (argc != 1) 293 usage(); 294 get(argv[0]); 295 exit(0); 296} 297 298/* 299 * Process a file to set standard ndp entries 300 */ 301int 302file(name) 303 char *name; 304{ 305 FILE *fp; 306 int i, retval; 307 char line[100], arg[5][50], *args[5]; 308 309 if ((fp = fopen(name, "r")) == NULL) { 310 fprintf(stderr, "ndp: cannot open %s\n", name); 311 exit(1); 312 } 313 args[0] = &arg[0][0]; 314 args[1] = &arg[1][0]; 315 args[2] = &arg[2][0]; 316 args[3] = &arg[3][0]; 317 args[4] = &arg[4][0]; 318 retval = 0; 319 while(fgets(line, 100, fp) != NULL) { 320 i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2], 321 arg[3], arg[4]); 322 if (i < 2) { 323 fprintf(stderr, "ndp: bad line: %s\n", line); 324 retval = 1; 325 continue; 326 } 327 if (set(i, args)) 328 retval = 1; 329 } 330 fclose(fp); 331 return (retval); 332} 333 334void 335getsocket() 336{ 337 if (s < 0) { 338 s = socket(PF_ROUTE, SOCK_RAW, 0); 339 if (s < 0) { 340 perror("ndp: socket"); 341 exit(1); 342 } 343 } 344} 345 346struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 347struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 348struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 349int expire_time, flags, found_entry; 350struct { 351 struct rt_msghdr m_rtm; 352 char m_space[512]; 353} m_rtmsg; 354 355/* 356 * Set an individual neighbor cache entry 357 */ 358int 359set(argc, argv) 360 int argc; 361 char **argv; 362{ 363 register struct sockaddr_in6 *sin = &sin_m; 364 register struct sockaddr_dl *sdl; 365 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 366 struct addrinfo hints, *res; 367 int gai_error; 368 u_char *ea; 369 char *host = argv[0], *eaddr = argv[1]; 370 371 getsocket(); 372 argc -= 2; 373 argv += 2; 374 sdl_m = blank_sdl; 375 sin_m = blank_sin; 376 377 bzero(&hints, sizeof(hints)); 378 hints.ai_family = AF_INET6; 379 gai_error = getaddrinfo(host, NULL, &hints, &res); 380 if (gai_error) { 381 fprintf(stderr, "ndp: %s: %s\n", host, 382 gai_strerror(gai_error)); 383 return 1; 384 } 385 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 386#ifdef __KAME__ 387 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 388 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 389 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 390 } 391#endif 392 ea = (u_char *)LLADDR(&sdl_m); 393 if (ndp_ether_aton(eaddr, ea) == 0) 394 sdl_m.sdl_alen = 6; 395 flags = expire_time = 0; 396 while (argc-- > 0) { 397 if (strncmp(argv[0], "temp", 4) == 0) { 398 struct timeval time; 399 gettimeofday(&time, 0); 400 expire_time = time.tv_sec + 20 * 60; 401 } else if (strncmp(argv[0], "proxy", 5) == 0) 402 flags |= RTF_ANNOUNCE; 403 argv++; 404 } 405 if (rtmsg(RTM_GET) < 0) { 406 perror(host); 407 return (1); 408 } 409 sin = (struct sockaddr_in6 *)(rtm + 1); 410 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 411 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 412 if (sdl->sdl_family == AF_LINK && 413 (rtm->rtm_flags & RTF_LLINFO) && 414 !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) { 415 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 416 case IFT_ISO88024: case IFT_ISO88025: 417 goto overwrite; 418 } 419 /* 420 * IPv4 arp command retries with sin_other = SIN_PROXY here. 421 */ 422 fprintf(stderr, "set: cannot configure a new entry\n"); 423 return 1; 424 } 425 426overwrite: 427 if (sdl->sdl_family != AF_LINK) { 428 printf("cannot intuit interface index and type for %s\n", host); 429 return (1); 430 } 431 sdl_m.sdl_type = sdl->sdl_type; 432 sdl_m.sdl_index = sdl->sdl_index; 433 return (rtmsg(RTM_ADD)); 434} 435 436/* 437 * Display an individual neighbor cache entry 438 */ 439void 440get(host) 441 char *host; 442{ 443 struct sockaddr_in6 *sin = &sin_m; 444 struct addrinfo hints, *res; 445 int gai_error; 446 447 sin_m = blank_sin; 448 bzero(&hints, sizeof(hints)); 449 hints.ai_family = AF_INET6; 450 gai_error = getaddrinfo(host, NULL, &hints, &res); 451 if (gai_error) { 452 fprintf(stderr, "ndp: %s: %s\n", host, 453 gai_strerror(gai_error)); 454 return; 455 } 456 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 457#ifdef __KAME__ 458 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 459 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 460 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 461 } 462#endif 463 dump(&sin->sin6_addr); 464 if (found_entry == 0) { 465 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 466 sizeof(host_buf), NULL ,0, 467 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 468 printf("%s (%s) -- no entry\n", host, host_buf); 469 exit(1); 470 } 471} 472 473/* 474 * Delete a neighbor cache entry 475 */ 476int 477delete(host) 478 char *host; 479{ 480 struct sockaddr_in6 *sin = &sin_m; 481 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 482 struct sockaddr_dl *sdl; 483 struct addrinfo hints, *res; 484 int gai_error; 485 486 getsocket(); 487 sin_m = blank_sin; 488 489 bzero(&hints, sizeof(hints)); 490 hints.ai_family = AF_INET6; 491 gai_error = getaddrinfo(host, NULL, &hints, &res); 492 if (gai_error) { 493 fprintf(stderr, "ndp: %s: %s\n", host, 494 gai_strerror(gai_error)); 495 return 1; 496 } 497 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 498#ifdef __KAME__ 499 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 500 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 501 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 502 } 503#endif 504 if (rtmsg(RTM_GET) < 0) { 505 perror(host); 506 return (1); 507 } 508 sin = (struct sockaddr_in6 *)(rtm + 1); 509 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 510 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 511 if (sdl->sdl_family == AF_LINK && 512 (rtm->rtm_flags & RTF_LLINFO) && 513 !(rtm->rtm_flags & RTF_GATEWAY)) { 514 goto delete; 515 } 516 /* 517 * IPv4 arp command retries with sin_other = SIN_PROXY here. 518 */ 519 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 520 return 1; 521 } 522 523delete: 524 if (sdl->sdl_family != AF_LINK) { 525 printf("cannot locate %s\n", host); 526 return (1); 527 } 528 if (rtmsg(RTM_DELETE) == 0) { 529 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 530 531#ifdef __KAME__ 532 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 533 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 534 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 535 } 536#endif 537 getnameinfo((struct sockaddr *)&s6, 538 s6.sin6_len, host_buf, 539 sizeof(host_buf), NULL, 0, 540 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 541 printf("%s (%s) deleted\n", host, host_buf); 542 } 543 544 return 0; 545} 546 547#define W_ADDR 31 548#define W_LL 17 549#define W_IF 6 550 551/* 552 * Dump the entire neighbor cache 553 */ 554void 555dump(addr) 556 struct in6_addr *addr; 557{ 558 int mib[6]; 559 size_t needed; 560 char *lim, *buf, *next; 561 struct rt_msghdr *rtm; 562 struct sockaddr_in6 *sin; 563 struct sockaddr_dl *sdl; 564 extern int h_errno; 565 struct in6_nbrinfo *nbi; 566 struct timeval time; 567 int addrwidth; 568 int llwidth; 569 int ifwidth; 570 char flgbuf[8]; 571 char *ifname; 572 573 /* Print header */ 574 if (!tflag && !cflag) 575 printf("%-*.*s %-*.*s %*.*s %-9.9s %2s %4s %4s\n", 576 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 577 W_IF, W_IF, "Netif", "Expire", "St", "Flgs", "Prbs"); 578 579again:; 580 mib[0] = CTL_NET; 581 mib[1] = PF_ROUTE; 582 mib[2] = 0; 583 mib[3] = AF_INET6; 584 mib[4] = NET_RT_FLAGS; 585 mib[5] = RTF_LLINFO; 586 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 587 err(1, "sysctl(PF_ROUTE estimate)"); 588 if (needed > 0) { 589 if ((buf = malloc(needed)) == NULL) 590 errx(1, "malloc"); 591 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 592 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 593 lim = buf + needed; 594 } else 595 buf = lim = NULL; 596 597 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 598 int isrouter = 0, prbs = 0; 599 600 rtm = (struct rt_msghdr *)next; 601 sin = (struct sockaddr_in6 *)(rtm + 1); 602 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 603 604 /* 605 * Some OSes can produce a route that has the LINK flag but 606 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 607 * and BSD/OS, where xx is not the interface identifier on 608 * lo0). Such routes entry would annoy getnbrinfo() below, 609 * so we skip them. 610 * XXX: such routes should have the GATEWAY flag, not the 611 * LINK flag. However, there are rotten routing software 612 * that advertises all routes that have the GATEWAY flag. 613 * Thus, KAME kernel intentionally does not set the LINK flag. 614 * What is to be fixed is not ndp, but such routing software 615 * (and the kernel workaround)... 616 */ 617 if (sdl->sdl_family != AF_LINK) 618 continue; 619 620 if (addr) { 621 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 622 continue; 623 found_entry = 1; 624 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 625 continue; 626 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 627 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 628 /* XXX: should scope id be filled in the kernel? */ 629 if (sin->sin6_scope_id == 0) 630 sin->sin6_scope_id = sdl->sdl_index; 631#ifdef __KAME__ 632 /* KAME specific hack; removed the embedded id */ 633 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 634#endif 635 } 636 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 637 sizeof(host_buf), NULL, 0, 638 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 639 if (cflag == 1) { 640#ifdef RTF_WASCLONED 641 if (rtm->rtm_flags & RTF_WASCLONED) 642 delete(host_buf); 643#else 644 delete(host_buf); 645#endif 646 continue; 647 } 648 gettimeofday(&time, 0); 649 if (tflag) 650 ts_print(&time); 651 652 addrwidth = strlen(host_buf); 653 if (addrwidth < W_ADDR) 654 addrwidth = W_ADDR; 655 llwidth = strlen(ether_str(sdl)); 656 if (W_ADDR + W_LL - addrwidth > llwidth) 657 llwidth = W_ADDR + W_LL - addrwidth; 658 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 659 if (!ifname) 660 ifname = "?"; 661 ifwidth = strlen(ifname); 662 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 663 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 664 665 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 666 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 667 668 /* Print neighbor discovery specific informations */ 669 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 670 if (nbi) { 671 if (nbi->expire > time.tv_sec) { 672 printf(" %-9.9s", 673 sec2str(nbi->expire - time.tv_sec)); 674 } else if (nbi->expire == 0) 675 printf(" %-9.9s", "permanent"); 676 else 677 printf(" %-9.9s", "expired"); 678 679 switch(nbi->state) { 680 case ND6_LLINFO_NOSTATE: 681 printf(" N"); 682 break; 683#ifdef ND6_LLINFO_WAITDELETE 684 case ND6_LLINFO_WAITDELETE: 685 printf(" W"); 686 break; 687#endif 688 case ND6_LLINFO_INCOMPLETE: 689 printf(" I"); 690 break; 691 case ND6_LLINFO_REACHABLE: 692 printf(" R"); 693 break; 694 case ND6_LLINFO_STALE: 695 printf(" S"); 696 break; 697 case ND6_LLINFO_DELAY: 698 printf(" D"); 699 break; 700 case ND6_LLINFO_PROBE: 701 printf(" P"); 702 break; 703 default: 704 printf(" ?"); 705 break; 706 } 707 708 isrouter = nbi->isrouter; 709 prbs = nbi->asked; 710 } else { 711 warnx("failed to get neighbor information"); 712 printf(" "); 713 } 714 putchar(' '); 715 716 /* 717 * other flags. R: router, P: proxy, W: ?? 718 */ 719 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 720 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 721 isrouter ? "R" : "", 722 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 723 } else { 724 sin = (struct sockaddr_in6 *) 725 (sdl->sdl_len + (char *)sdl); 726 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 727 isrouter ? "R" : "", 728 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) 729 ? "P" : "", 730 (sin->sin6_len != sizeof(struct sockaddr_in6)) 731 ? "W" : "", 732 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 733 } 734 printf(" %-4.4s", flgbuf); 735 736 if (prbs) 737 printf(" %4d", prbs); 738 739 printf("\n"); 740 } 741 if (buf != NULL) 742 free(buf); 743 744 if (repeat) { 745 printf("\n"); 746 sleep(repeat); 747 goto again; 748 } 749} 750 751static struct in6_nbrinfo * 752getnbrinfo(addr, ifindex, warning) 753 struct in6_addr *addr; 754 int ifindex; 755 int warning; 756{ 757 static struct in6_nbrinfo nbi; 758 int s; 759 760 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 761 err(1, "socket"); 762 763 bzero(&nbi, sizeof(nbi)); 764 if_indextoname(ifindex, nbi.ifname); 765 nbi.addr = *addr; 766 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 767 if (warning) 768 warn("ioctl(SIOCGNBRINFO_IN6)"); 769 close(s); 770 return(NULL); 771 } 772 773 close(s); 774 return(&nbi); 775} 776 777static char * 778ether_str(sdl) 779 struct sockaddr_dl *sdl; 780{ 781 static char ebuf[32]; 782 u_char *cp; 783 784 if (sdl->sdl_alen) { 785 cp = (u_char *)LLADDR(sdl); 786 sprintf(ebuf, "%x:%x:%x:%x:%x:%x", 787 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 788 } else { 789 sprintf(ebuf, "(incomplete)"); 790 } 791 792 return(ebuf); 793} 794 795int 796ndp_ether_aton(a, n) 797 char *a; 798 u_char *n; 799{ 800 int i, o[6]; 801 802 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 803 &o[3], &o[4], &o[5]); 804 if (i != 6) { 805 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 806 return (1); 807 } 808 for (i=0; i<6; i++) 809 n[i] = o[i]; 810 return (0); 811} 812 813void 814usage() 815{ 816 printf("usage: ndp hostname\n"); 817 printf(" ndp -a[nt]\n"); 818 printf(" ndp [-nt] -A wait\n"); 819 printf(" ndp -c[nt]\n"); 820 printf(" ndp -d[nt] hostname\n"); 821 printf(" ndp -f[nt] filename\n"); 822 printf(" ndp -i interface [flags...]\n"); 823#ifdef SIOCSDEFIFACE_IN6 824 printf(" ndp -I [interface|delete]\n"); 825#endif 826 printf(" ndp -p\n"); 827 printf(" ndp -r\n"); 828 printf(" ndp -s hostname ether_addr [temp] [proxy]\n"); 829 printf(" ndp -H\n"); 830 printf(" ndp -P\n"); 831 printf(" ndp -R\n"); 832 exit(1); 833} 834 835int 836rtmsg(cmd) 837 int cmd; 838{ 839 static int seq; 840 int rlen; 841 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 842 register char *cp = m_rtmsg.m_space; 843 register int l; 844 845 errno = 0; 846 if (cmd == RTM_DELETE) 847 goto doit; 848 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 849 rtm->rtm_flags = flags; 850 rtm->rtm_version = RTM_VERSION; 851 852 switch (cmd) { 853 default: 854 fprintf(stderr, "ndp: internal wrong cmd\n"); 855 exit(1); 856 case RTM_ADD: 857 rtm->rtm_addrs |= RTA_GATEWAY; 858 rtm->rtm_rmx.rmx_expire = expire_time; 859 rtm->rtm_inits = RTV_EXPIRE; 860 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 861 if (rtm->rtm_flags & RTF_ANNOUNCE) { 862 rtm->rtm_flags &= ~RTF_HOST; 863 rtm->rtm_flags |= RTA_NETMASK; 864 } 865 /* FALLTHROUGH */ 866 case RTM_GET: 867 rtm->rtm_addrs |= RTA_DST; 868 } 869#define NEXTADDR(w, s) \ 870 if (rtm->rtm_addrs & (w)) { \ 871 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 872 873 NEXTADDR(RTA_DST, sin_m); 874 NEXTADDR(RTA_GATEWAY, sdl_m); 875 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 876 NEXTADDR(RTA_NETMASK, so_mask); 877 878 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 879doit: 880 l = rtm->rtm_msglen; 881 rtm->rtm_seq = ++seq; 882 rtm->rtm_type = cmd; 883 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 884 if (errno != ESRCH || cmd != RTM_DELETE) { 885 perror("writing to routing socket"); 886 return (-1); 887 } 888 } 889 do { 890 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 891 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 892 if (l < 0) 893 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 894 strerror(errno)); 895 return (0); 896} 897 898void 899ifinfo(argc, argv) 900 int argc; 901 char **argv; 902{ 903 struct in6_ndireq nd; 904 int i, s; 905 char *ifname = argv[0]; 906 u_int32_t newflags; 907#ifdef IPV6CTL_USETEMPADDR 908 u_int8_t nullbuf[8]; 909#endif 910 911 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 912 perror("ndp: socket"); 913 exit(1); 914 } 915 bzero(&nd, sizeof(nd)); 916 strcpy(nd.ifname, ifname); 917 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 918 perror("ioctl (SIOCGIFINFO_IN6)"); 919 exit(1); 920 } 921#define ND nd.ndi 922 newflags = ND.flags; 923 for (i = 1; i < argc; i++) { 924 int clear = 0; 925 char *cp = argv[i]; 926 927 if (*cp == '-') { 928 clear = 1; 929 cp++; 930 } 931 932#define SETFLAG(s, f) \ 933 do {\ 934 if (strcmp(cp, (s)) == 0) {\ 935 if (clear)\ 936 newflags &= ~(f);\ 937 else\ 938 newflags |= (f);\ 939 }\ 940 } while (0) 941 SETFLAG("nud", ND6_IFF_PERFORMNUD); 942#ifdef ND6_IFF_ACCEPT_RTADV 943 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 944#endif 945 946 ND.flags = newflags; 947 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 948 perror("ioctl(SIOCSIFINFO_FLAGS)"); 949 exit(1); 950 } 951#undef SETFLAG 952 } 953 954 printf("linkmtu=%d", ND.linkmtu); 955 printf(", curhlim=%d", ND.chlim); 956 printf(", basereachable=%ds%dms", 957 ND.basereachable / 1000, ND.basereachable % 1000); 958 printf(", reachable=%ds", ND.reachable); 959 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 960#ifdef IPV6CTL_USETEMPADDR 961 memset(nullbuf, 0, sizeof(nullbuf)); 962 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 963 int j; 964 u_int8_t *rbuf; 965 966 for (i = 0; i < 3; i++) { 967 switch(i) { 968 case 0: 969 printf("\nRandom seed(0): "); 970 rbuf = ND.randomseed0; 971 break; 972 case 1: 973 printf("\nRandom seed(1): "); 974 rbuf = ND.randomseed1; 975 break; 976 case 2: 977 printf("\nRandom ID: "); 978 rbuf = ND.randomid; 979 break; 980 } 981 for (j = 0; j < 8; j++) 982 printf("%02x", rbuf[j]); 983 } 984 } 985#endif 986 if (ND.flags) { 987 printf("\nFlags: "); 988 if ((ND.flags & ND6_IFF_PERFORMNUD)) 989 printf("nud "); 990#ifdef ND6_IFF_ACCEPT_RTADV 991 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 992 printf("accept_rtadv "); 993#endif 994} 995 putc('\n', stdout); 996#undef ND 997 998 close(s); 999} 1000 1001#ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1002#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1003#endif 1004 1005void 1006rtrlist() 1007{ 1008#ifdef ICMPV6CTL_ND6_DRLIST 1009 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1010 char *buf; 1011 struct in6_defrouter *p, *ep; 1012 size_t l; 1013 struct timeval time; 1014 1015 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1016 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1017 /*NOTREACHED*/ 1018 } 1019 buf = malloc(l); 1020 if (!buf) { 1021 errx(1, "not enough core"); 1022 /*NOTREACHED*/ 1023 } 1024 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1025 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1026 /*NOTREACHED*/ 1027 } 1028 1029 ep = (struct in6_defrouter *)(buf + l); 1030 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1031 int rtpref; 1032 1033 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1034 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1035 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)) != 0) 1036 strlcpy(host_buf, "?", sizeof(host_buf)); 1037 1038 printf("%s if=%s", host_buf, 1039 if_indextoname(p->if_index, ifix_buf)); 1040 printf(", flags=%s%s", 1041 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1042 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1043 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1044 printf(", pref=%s", rtpref_str[rtpref]); 1045 1046 gettimeofday(&time, 0); 1047 if (p->expire == 0) 1048 printf(", expire=Never\n"); 1049 else 1050 printf(", expire=%s\n", 1051 sec2str(p->expire - time.tv_sec)); 1052 } 1053 free(buf); 1054#else 1055 struct in6_drlist dr; 1056 int s, i; 1057 struct timeval time; 1058 1059 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1060 perror("ndp: socket"); 1061 exit(1); 1062 } 1063 bzero(&dr, sizeof(dr)); 1064 strcpy(dr.ifname, "lo0"); /* dummy */ 1065 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1066 perror("ioctl (SIOCGDRLST_IN6)"); 1067 exit(1); 1068 } 1069#define DR dr.defrouter[i] 1070 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1071 struct sockaddr_in6 sin6; 1072 1073 bzero(&sin6, sizeof(sin6)); 1074 sin6.sin6_family = AF_INET6; 1075 sin6.sin6_len = sizeof(sin6); 1076 sin6.sin6_addr = DR.rtaddr; 1077 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1078 sizeof(host_buf), NULL, 0, 1079 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 1080 1081 printf("%s if=%s", host_buf, 1082 if_indextoname(DR.if_index, ifix_buf)); 1083 printf(", flags=%s%s", 1084 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1085 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1086 gettimeofday(&time, 0); 1087 if (DR.expire == 0) 1088 printf(", expire=Never\n"); 1089 else 1090 printf(", expire=%s\n", 1091 sec2str(DR.expire - time.tv_sec)); 1092 } 1093#undef DR 1094 close(s); 1095#endif 1096} 1097 1098void 1099plist() 1100{ 1101#ifdef ICMPV6CTL_ND6_PRLIST 1102 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1103 char *buf; 1104 struct in6_prefix *p, *ep, *n; 1105 struct sockaddr_in6 *advrtr; 1106 size_t l; 1107 struct timeval time; 1108#ifdef NI_WITHSCOPEID 1109 const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID; 1110 int ninflags = (nflag ? NI_NUMERICHOST : 0) | NI_WITHSCOPEID; 1111#else 1112 const int niflags = NI_NUMERICHOST; 1113 int ninflags = nflag ? NI_NUMERICHOST : 0; 1114#endif 1115 char namebuf[NI_MAXHOST]; 1116 1117 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1118 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1119 /*NOTREACHED*/ 1120 } 1121 buf = malloc(l); 1122 if (!buf) { 1123 errx(1, "not enough core"); 1124 /*NOTREACHED*/ 1125 } 1126 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1127 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1128 /*NOTREACHED*/ 1129 } 1130 1131 ep = (struct in6_prefix *)(buf + l); 1132 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1133 advrtr = (struct sockaddr_in6 *)(p + 1); 1134 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1135 1136 if (getnameinfo((struct sockaddr *)&p->prefix, 1137 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1138 NULL, 0, niflags) != 0) 1139 strlcpy(namebuf, "?", sizeof(namebuf)); 1140 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1141 if_indextoname(p->if_index, ifix_buf)); 1142 1143 gettimeofday(&time, 0); 1144 /* 1145 * meaning of fields, especially flags, is very different 1146 * by origin. notify the difference to the users. 1147 */ 1148 printf("flags=%s%s%s%s%s", 1149 p->raflags.onlink ? "L" : "", 1150 p->raflags.autonomous ? "A" : "", 1151 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1152 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1153#ifdef NDPRF_HOME 1154 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1155#else 1156 "" 1157#endif 1158 ); 1159 if (p->vltime == ND6_INFINITE_LIFETIME) 1160 printf(" vltime=infinity"); 1161 else 1162 printf(" vltime=%ld", (long)p->vltime); 1163 if (p->pltime == ND6_INFINITE_LIFETIME) 1164 printf(", pltime=infinity"); 1165 else 1166 printf(", pltime=%ld", (long)p->pltime); 1167 if (p->expire == 0) 1168 printf(", expire=Never"); 1169 else if (p->expire >= time.tv_sec) 1170 printf(", expire=%s", 1171 sec2str(p->expire - time.tv_sec)); 1172 else 1173 printf(", expired"); 1174 printf(", ref=%d", p->refcnt); 1175 printf("\n"); 1176 /* 1177 * "advertising router" list is meaningful only if the prefix 1178 * information is from RA. 1179 */ 1180 if (p->advrtrs) { 1181 int j; 1182 struct sockaddr_in6 *sin6; 1183 1184 sin6 = (struct sockaddr_in6 *)(p + 1); 1185 printf(" advertised by\n"); 1186 for (j = 0; j < p->advrtrs; j++) { 1187 struct in6_nbrinfo *nbi; 1188 1189 if (getnameinfo((struct sockaddr *)sin6, 1190 sin6->sin6_len, namebuf, sizeof(namebuf), 1191 NULL, 0, ninflags) != 0) 1192 strlcpy(namebuf, "?", sizeof(namebuf)); 1193 printf(" %s", namebuf); 1194 1195 nbi = getnbrinfo(&sin6->sin6_addr, p->if_index, 1196 0); 1197 if (nbi) { 1198 switch(nbi->state) { 1199 case ND6_LLINFO_REACHABLE: 1200 case ND6_LLINFO_STALE: 1201 case ND6_LLINFO_DELAY: 1202 case ND6_LLINFO_PROBE: 1203 printf(" (reachable)\n"); 1204 break; 1205 default: 1206 printf(" (unreachable)\n"); 1207 } 1208 } else 1209 printf(" (no neighbor state)\n"); 1210 sin6++; 1211 } 1212 } else 1213 printf(" No advertising router\n"); 1214 } 1215 free(buf); 1216#else 1217 struct in6_prlist pr; 1218 int s, i; 1219 struct timeval time; 1220 1221 gettimeofday(&time, 0); 1222 1223 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1224 perror("ndp: socket"); 1225 exit(1); 1226 } 1227 bzero(&pr, sizeof(pr)); 1228 strcpy(pr.ifname, "lo0"); /* dummy */ 1229 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1230 perror("ioctl (SIOCGPRLST_IN6)"); 1231 exit(1); 1232 } 1233#define PR pr.prefix[i] 1234 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1235 struct sockaddr_in6 p6; 1236 char namebuf[NI_MAXHOST]; 1237 int niflags; 1238 1239#ifdef NDPRF_ONLINK 1240 p6 = PR.prefix; 1241#else 1242 memset(&p6, 0, sizeof(p6)); 1243 p6.sin6_family = AF_INET6; 1244 p6.sin6_len = sizeof(p6); 1245 p6.sin6_addr = PR.prefix; 1246#endif 1247 1248 /* 1249 * copy link index to sin6_scope_id field. 1250 * XXX: KAME specific. 1251 */ 1252 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1253 u_int16_t linkid; 1254 1255 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1256 sizeof(linkid)); 1257 linkid = ntohs(linkid); 1258 p6.sin6_scope_id = linkid; 1259 p6.sin6_addr.s6_addr[2] = 0; 1260 p6.sin6_addr.s6_addr[3] = 0; 1261 } 1262 1263 niflags = NI_NUMERICHOST; 1264#ifdef __KAME__ 1265 niflags |= NI_WITHSCOPEID; 1266#endif 1267 if (getnameinfo((struct sockaddr *)&p6, 1268 sizeof(p6), namebuf, sizeof(namebuf), 1269 NULL, 0, niflags)) { 1270 warnx("getnameinfo failed"); 1271 continue; 1272 } 1273 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1274 if_indextoname(PR.if_index, ifix_buf)); 1275 1276 gettimeofday(&time, 0); 1277 /* 1278 * meaning of fields, especially flags, is very different 1279 * by origin. notify the difference to the users. 1280 */ 1281#if 0 1282 printf(" %s", 1283 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1284#endif 1285#ifdef NDPRF_ONLINK 1286 printf("flags=%s%s%s%s%s", 1287 PR.raflags.onlink ? "L" : "", 1288 PR.raflags.autonomous ? "A" : "", 1289 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1290 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1291#ifdef NDPRF_HOME 1292 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1293#else 1294 "" 1295#endif 1296 ); 1297#else 1298 printf("flags=%s%s", 1299 PR.raflags.onlink ? "L" : "", 1300 PR.raflags.autonomous ? "A" : ""); 1301#endif 1302 if (PR.vltime == ND6_INFINITE_LIFETIME) 1303 printf(" vltime=infinity"); 1304 else 1305 printf(" vltime=%ld", (long)PR.vltime); 1306 if (PR.pltime == ND6_INFINITE_LIFETIME) 1307 printf(", pltime=infinity"); 1308 else 1309 printf(", pltime=%ld", (long)PR.pltime); 1310 if (PR.expire == 0) 1311 printf(", expire=Never"); 1312 else if (PR.expire >= time.tv_sec) 1313 printf(", expire=%s", 1314 sec2str(PR.expire - time.tv_sec)); 1315 else 1316 printf(", expired"); 1317#ifdef NDPRF_ONLINK 1318 printf(", ref=%d", PR.refcnt); 1319#endif 1320#if 0 1321 switch (PR.origin) { 1322 case PR_ORIG_RA: 1323 printf(", origin=RA"); 1324 break; 1325 case PR_ORIG_RR: 1326 printf(", origin=RR"); 1327 break; 1328 case PR_ORIG_STATIC: 1329 printf(", origin=static"); 1330 break; 1331 case PR_ORIG_KERNEL: 1332 printf(", origin=kernel"); 1333 break; 1334 default: 1335 printf(", origin=?"); 1336 break; 1337 } 1338#endif 1339 printf("\n"); 1340 /* 1341 * "advertising router" list is meaningful only if the prefix 1342 * information is from RA. 1343 */ 1344 if (0 && /* prefix origin is almost obsolted */ 1345 PR.origin != PR_ORIG_RA) 1346 ; 1347 else if (PR.advrtrs) { 1348 int j; 1349 printf(" advertised by\n"); 1350 for (j = 0; j < PR.advrtrs; j++) { 1351 struct sockaddr_in6 sin6; 1352 struct in6_nbrinfo *nbi; 1353 1354 bzero(&sin6, sizeof(sin6)); 1355 sin6.sin6_family = AF_INET6; 1356 sin6.sin6_len = sizeof(sin6); 1357 sin6.sin6_addr = PR.advrtr[j]; 1358 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1359 getnameinfo((struct sockaddr *)&sin6, 1360 sin6.sin6_len, host_buf, 1361 sizeof(host_buf), NULL, 0, 1362 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 1363 printf(" %s", host_buf); 1364 1365 nbi = getnbrinfo(&sin6.sin6_addr, PR.if_index, 1366 0); 1367 if (nbi) { 1368 switch(nbi->state) { 1369 case ND6_LLINFO_REACHABLE: 1370 case ND6_LLINFO_STALE: 1371 case ND6_LLINFO_DELAY: 1372 case ND6_LLINFO_PROBE: 1373 printf(" (reachable)\n"); 1374 break; 1375 default: 1376 printf(" (unreachable)\n"); 1377 } 1378 } else 1379 printf(" (no neighbor state)\n"); 1380 } 1381 if (PR.advrtrs > DRLSTSIZ) 1382 printf(" and %d routers\n", 1383 PR.advrtrs - DRLSTSIZ); 1384 } else 1385 printf(" No advertising router\n"); 1386 } 1387#undef PR 1388 close(s); 1389#endif 1390} 1391 1392void 1393pfx_flush() 1394{ 1395 char dummyif[IFNAMSIZ+8]; 1396 int s; 1397 1398 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1399 err(1, "socket"); 1400 strcpy(dummyif, "lo0"); /* dummy */ 1401 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1402 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1403} 1404 1405void 1406rtr_flush() 1407{ 1408 char dummyif[IFNAMSIZ+8]; 1409 int s; 1410 1411 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1412 err(1, "socket"); 1413 strcpy(dummyif, "lo0"); /* dummy */ 1414 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1415 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1416 1417 close(s); 1418} 1419 1420void 1421harmonize_rtr() 1422{ 1423 char dummyif[IFNAMSIZ+8]; 1424 int s; 1425 1426 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1427 err(1, "socket"); 1428 strcpy(dummyif, "lo0"); /* dummy */ 1429 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1430 err(1, "ioctl (SIOCSNDFLUSH_IN6)"); 1431 1432 close(s); 1433} 1434 1435#ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1436static void 1437setdefif(ifname) 1438 char *ifname; 1439{ 1440 struct in6_ndifreq ndifreq; 1441 unsigned int ifindex; 1442 1443 if (strcasecmp(ifname, "delete") == 0) 1444 ifindex = 0; 1445 else { 1446 if ((ifindex = if_nametoindex(ifname)) == 0) 1447 err(1, "failed to resolve i/f index for %s", ifname); 1448 } 1449 1450 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1451 err(1, "socket"); 1452 1453 strcpy(ndifreq.ifname, "lo0"); /* dummy */ 1454 ndifreq.ifindex = ifindex; 1455 1456 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1457 err(1, "ioctl (SIOCSDEFIFACE_IN6)"); 1458 1459 close(s); 1460} 1461 1462static void 1463getdefif() 1464{ 1465 struct in6_ndifreq ndifreq; 1466 char ifname[IFNAMSIZ+8]; 1467 1468 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1469 err(1, "socket"); 1470 1471 memset(&ndifreq, 0, sizeof(ndifreq)); 1472 strcpy(ndifreq.ifname, "lo0"); /* dummy */ 1473 1474 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1475 err(1, "ioctl (SIOCGDEFIFACE_IN6)"); 1476 1477 if (ndifreq.ifindex == 0) 1478 printf("No default interface.\n"); 1479 else { 1480 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1481 err(1, "failed to resolve ifname for index %lu", 1482 ndifreq.ifindex); 1483 printf("ND default interface = %s\n", ifname); 1484 } 1485 1486 close(s); 1487} 1488#endif 1489 1490static char * 1491sec2str(total) 1492 time_t total; 1493{ 1494 static char result[256]; 1495 int days, hours, mins, secs; 1496 int first = 1; 1497 char *p = result; 1498 1499 days = total / 3600 / 24; 1500 hours = (total / 3600) % 24; 1501 mins = (total / 60) % 60; 1502 secs = total % 60; 1503 1504 if (days) { 1505 first = 0; 1506 p += sprintf(p, "%dd", days); 1507 } 1508 if (!first || hours) { 1509 first = 0; 1510 p += sprintf(p, "%dh", hours); 1511 } 1512 if (!first || mins) { 1513 first = 0; 1514 p += sprintf(p, "%dm", mins); 1515 } 1516 sprintf(p, "%ds", secs); 1517 1518 return(result); 1519} 1520 1521/* 1522 * Print the timestamp 1523 * from tcpdump/util.c 1524 */ 1525static void 1526ts_print(tvp) 1527 const struct timeval *tvp; 1528{ 1529 int s; 1530 1531 /* Default */ 1532 s = (tvp->tv_sec + thiszone) % 86400; 1533 (void)printf("%02d:%02d:%02d.%06u ", 1534 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1535} 1536