ndp.c revision 1.21
1 /* $NetBSD: ndp.c,v 1.21 2002/06/02 23:43:21 itojun Exp $ */ 2 /* $KAME: ndp.c,v 1.91 2002/06/02 15:22:07 itojun Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 /* 33 * Copyright (c) 1984, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Sun Microsystems, Inc. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the University of 50 * California, Berkeley and its contributors. 51 * 4. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 */ 67 68 /* 69 * Based on: 70 * "@(#) Copyright (c) 1984, 1993\n\ 71 * The Regents of the University of California. All rights reserved.\n"; 72 * 73 * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; 74 */ 75 76 /* 77 * ndp - display, set, delete and flush neighbor cache 78 */ 79 80 81 #include <sys/param.h> 82 #include <sys/file.h> 83 #include <sys/ioctl.h> 84 #include <sys/socket.h> 85 #include <sys/sysctl.h> 86 #include <sys/time.h> 87 88 #include <net/if.h> 89 #include <net/if_dl.h> 90 #include <net/if_types.h> 91 #include <net/route.h> 92 93 #include <netinet/in.h> 94 95 #include <netinet/icmp6.h> 96 #include <netinet6/in6_var.h> 97 #include <netinet6/nd6.h> 98 99 #include <arpa/inet.h> 100 101 #include <netdb.h> 102 #include <errno.h> 103 #include <nlist.h> 104 #include <stdio.h> 105 #include <string.h> 106 #include <paths.h> 107 #include <err.h> 108 #include <stdlib.h> 109 #include <fcntl.h> 110 #include <unistd.h> 111 #include <err.h> 112 #include "gmt2local.h" 113 114 /* packing rule for routing socket */ 115 #define ROUNDUP(a) \ 116 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 117 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 118 119 static pid_t pid; 120 static int cflag; 121 static int nflag; 122 static int tflag; 123 static int32_t thiszone; /* time difference with gmt */ 124 static int s = -1; 125 static int repeat = 0; 126 127 char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 128 char host_buf[NI_MAXHOST]; /* getnameinfo() */ 129 char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 130 131 int main __P((int, char **)); 132 int file __P((char *)); 133 void getsocket __P((void)); 134 int set __P((int, char **)); 135 void get __P((char *)); 136 int delete __P((char *)); 137 void dump __P((struct in6_addr *)); 138 static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *, int, int)); 139 static char *ether_str __P((struct sockaddr_dl *)); 140 int ndp_ether_aton __P((char *, u_char *)); 141 void usage __P((void)); 142 int rtmsg __P((int)); 143 void ifinfo __P((int, char **)); 144 void rtrlist __P((void)); 145 void plist __P((void)); 146 void pfx_flush __P((void)); 147 void rtrlist __P((void)); 148 void rtr_flush __P((void)); 149 void harmonize_rtr __P((void)); 150 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 151 static void getdefif __P((void)); 152 static void setdefif __P((char *)); 153 #endif 154 static char *sec2str __P((time_t)); 155 static char *ether_str __P((struct sockaddr_dl *)); 156 static void ts_print __P((const struct timeval *)); 157 158 #ifdef ICMPV6CTL_ND6_DRLIST 159 static char *rtpref_str[] = { 160 "medium", /* 00 */ 161 "high", /* 01 */ 162 "rsv", /* 10 */ 163 "low" /* 11 */ 164 }; 165 #endif 166 167 int 168 main(argc, argv) 169 int argc; 170 char **argv; 171 { 172 int ch; 173 int aflag = 0, dflag = 0, sflag = 0, Hflag = 0; 174 int pflag = 0, rflag = 0, Pflag = 0, Rflag = 0; 175 176 pid = getpid(); 177 thiszone = gmt2local(0); 178 while ((ch = getopt(argc, argv, "acndfIilprstA:HPR")) != -1) 179 switch ((char)ch) { 180 case 'a': 181 aflag = 1; 182 break; 183 case 'c': 184 cflag = 1; 185 break; 186 case 'd': 187 dflag = 1; 188 break; 189 case 'I': 190 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 191 if (argc > 2) 192 setdefif(argv[2]); 193 getdefif(); /* always call it to print the result */ 194 exit(0); 195 #else 196 errx(1, "not supported yet"); 197 /*NOTREACHED*/ 198 #endif 199 case 'i' : 200 argc -= optind; 201 argv += optind; 202 if (argc < 1) 203 usage(); 204 ifinfo(argc, argv); 205 exit(0); 206 case 'n': 207 nflag = 1; 208 continue; 209 case 'p': 210 pflag = 1; 211 break; 212 case 'f' : 213 if (argc != 3) 214 usage(); 215 file(argv[2]); 216 exit(0); 217 case 'l' : 218 /* obsolete, ignored */ 219 break; 220 case 'r' : 221 rflag = 1; 222 break; 223 case 's': 224 sflag = 1; 225 break; 226 case 't': 227 tflag = 1; 228 break; 229 case 'A': 230 aflag = 1; 231 repeat = atoi(optarg); 232 if (repeat < 0) 233 usage(); 234 break; 235 case 'H' : 236 Hflag = 1; 237 break; 238 case 'P': 239 Pflag = 1; 240 break; 241 case 'R': 242 Rflag = 1; 243 break; 244 default: 245 usage(); 246 } 247 248 argc -= optind; 249 argv += optind; 250 251 if (aflag || cflag) { 252 dump(0); 253 exit(0); 254 } 255 if (dflag) { 256 if (argc != 1) 257 usage(); 258 delete(argv[0]); 259 exit(0); 260 } 261 if (pflag) { 262 plist(); 263 exit(0); 264 } 265 if (rflag) { 266 rtrlist(); 267 exit(0); 268 } 269 if (sflag) { 270 if (argc < 2 || argc > 4) 271 usage(); 272 exit(set(argc, argv) ? 1 : 0); 273 } 274 if (Hflag) { 275 harmonize_rtr(); 276 exit(0); 277 } 278 if (Pflag) { 279 pfx_flush(); 280 exit(0); 281 } 282 if (Rflag) { 283 rtr_flush(); 284 exit(0); 285 } 286 287 if (argc != 1) 288 usage(); 289 get(argv[0]); 290 exit(0); 291 } 292 293 /* 294 * Process a file to set standard ndp entries 295 */ 296 int 297 file(name) 298 char *name; 299 { 300 FILE *fp; 301 int i, retval; 302 char line[100], arg[5][50], *args[5]; 303 304 if ((fp = fopen(name, "r")) == NULL) { 305 fprintf(stderr, "ndp: cannot open %s\n", name); 306 exit(1); 307 } 308 args[0] = &arg[0][0]; 309 args[1] = &arg[1][0]; 310 args[2] = &arg[2][0]; 311 args[3] = &arg[3][0]; 312 args[4] = &arg[4][0]; 313 retval = 0; 314 while(fgets(line, 100, fp) != NULL) { 315 i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2], 316 arg[3], arg[4]); 317 if (i < 2) { 318 fprintf(stderr, "ndp: bad line: %s\n", line); 319 retval = 1; 320 continue; 321 } 322 if (set(i, args)) 323 retval = 1; 324 } 325 fclose(fp); 326 return (retval); 327 } 328 329 void 330 getsocket() 331 { 332 if (s < 0) { 333 s = socket(PF_ROUTE, SOCK_RAW, 0); 334 if (s < 0) { 335 err(1, "ndp: socket"); 336 /* NOTREACHED */ 337 } 338 } 339 } 340 341 struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 342 struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 343 struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 344 int expire_time, flags, found_entry; 345 struct { 346 struct rt_msghdr m_rtm; 347 char m_space[512]; 348 } m_rtmsg; 349 350 /* 351 * Set an individual neighbor cache entry 352 */ 353 int 354 set(argc, argv) 355 int argc; 356 char **argv; 357 { 358 register struct sockaddr_in6 *sin = &sin_m; 359 register struct sockaddr_dl *sdl; 360 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 361 struct addrinfo hints, *res; 362 int gai_error; 363 u_char *ea; 364 char *host = argv[0], *eaddr = argv[1]; 365 366 getsocket(); 367 argc -= 2; 368 argv += 2; 369 sdl_m = blank_sdl; 370 sin_m = blank_sin; 371 372 bzero(&hints, sizeof(hints)); 373 hints.ai_family = AF_INET6; 374 gai_error = getaddrinfo(host, NULL, &hints, &res); 375 if (gai_error) { 376 fprintf(stderr, "ndp: %s: %s\n", host, 377 gai_strerror(gai_error)); 378 return 1; 379 } 380 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 381 #ifdef __KAME__ 382 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 383 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 384 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 385 } 386 #endif 387 ea = (u_char *)LLADDR(&sdl_m); 388 if (ndp_ether_aton(eaddr, ea) == 0) 389 sdl_m.sdl_alen = 6; 390 flags = expire_time = 0; 391 while (argc-- > 0) { 392 if (strncmp(argv[0], "temp", 4) == 0) { 393 struct timeval time; 394 395 gettimeofday(&time, 0); 396 expire_time = time.tv_sec + 20 * 60; 397 } else if (strncmp(argv[0], "proxy", 5) == 0) 398 flags |= RTF_ANNOUNCE; 399 argv++; 400 } 401 if (rtmsg(RTM_GET) < 0) { 402 errx(1, "RTM_GET(%s) failed", host); 403 /* NOTREACHED */ 404 } 405 sin = (struct sockaddr_in6 *)(rtm + 1); 406 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 407 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 408 if (sdl->sdl_family == AF_LINK && 409 (rtm->rtm_flags & RTF_LLINFO) && 410 !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) { 411 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 412 case IFT_ISO88024: case IFT_ISO88025: 413 goto overwrite; 414 } 415 /* 416 * IPv4 arp command retries with sin_other = SIN_PROXY here. 417 */ 418 fprintf(stderr, "set: cannot configure a new entry\n"); 419 return 1; 420 } 421 422 overwrite: 423 if (sdl->sdl_family != AF_LINK) { 424 printf("cannot intuit interface index and type for %s\n", host); 425 return (1); 426 } 427 sdl_m.sdl_type = sdl->sdl_type; 428 sdl_m.sdl_index = sdl->sdl_index; 429 return (rtmsg(RTM_ADD)); 430 } 431 432 /* 433 * Display an individual neighbor cache entry 434 */ 435 void 436 get(host) 437 char *host; 438 { 439 struct sockaddr_in6 *sin = &sin_m; 440 struct addrinfo hints, *res; 441 int gai_error; 442 443 sin_m = blank_sin; 444 bzero(&hints, sizeof(hints)); 445 hints.ai_family = AF_INET6; 446 gai_error = getaddrinfo(host, NULL, &hints, &res); 447 if (gai_error) { 448 fprintf(stderr, "ndp: %s: %s\n", host, 449 gai_strerror(gai_error)); 450 return; 451 } 452 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 453 #ifdef __KAME__ 454 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 455 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 456 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 457 } 458 #endif 459 dump(&sin->sin6_addr); 460 if (found_entry == 0) { 461 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 462 sizeof(host_buf), NULL ,0, 463 (nflag ? NI_NUMERICHOST : 0)); 464 printf("%s (%s) -- no entry\n", host, host_buf); 465 exit(1); 466 } 467 } 468 469 /* 470 * Delete a neighbor cache entry 471 */ 472 int 473 delete(host) 474 char *host; 475 { 476 struct sockaddr_in6 *sin = &sin_m; 477 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 478 struct sockaddr_dl *sdl; 479 struct addrinfo hints, *res; 480 int gai_error; 481 482 getsocket(); 483 sin_m = blank_sin; 484 485 bzero(&hints, sizeof(hints)); 486 hints.ai_family = AF_INET6; 487 gai_error = getaddrinfo(host, NULL, &hints, &res); 488 if (gai_error) { 489 fprintf(stderr, "ndp: %s: %s\n", host, 490 gai_strerror(gai_error)); 491 return 1; 492 } 493 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 494 #ifdef __KAME__ 495 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 496 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 497 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 498 } 499 #endif 500 if (rtmsg(RTM_GET) < 0) { 501 errx(1, "RTM_GET(%s) failed", host); 502 /* NOTREACHED */ 503 } 504 sin = (struct sockaddr_in6 *)(rtm + 1); 505 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 506 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 507 if (sdl->sdl_family == AF_LINK && 508 (rtm->rtm_flags & RTF_LLINFO) && 509 !(rtm->rtm_flags & RTF_GATEWAY)) { 510 goto delete; 511 } 512 /* 513 * IPv4 arp command retries with sin_other = SIN_PROXY here. 514 */ 515 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 516 return 1; 517 } 518 519 delete: 520 if (sdl->sdl_family != AF_LINK) { 521 printf("cannot locate %s\n", host); 522 return (1); 523 } 524 if (rtmsg(RTM_DELETE) == 0) { 525 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 526 527 #ifdef __KAME__ 528 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 529 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 530 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 531 } 532 #endif 533 getnameinfo((struct sockaddr *)&s6, 534 s6.sin6_len, host_buf, 535 sizeof(host_buf), NULL, 0, 536 (nflag ? NI_NUMERICHOST : 0)); 537 printf("%s (%s) deleted\n", host, host_buf); 538 } 539 540 return 0; 541 } 542 543 #define W_ADDR 36 544 #define W_LL 17 545 #define W_IF 6 546 547 /* 548 * Dump the entire neighbor cache 549 */ 550 void 551 dump(addr) 552 struct in6_addr *addr; 553 { 554 int mib[6]; 555 size_t needed; 556 char *lim, *buf, *next; 557 struct rt_msghdr *rtm; 558 struct sockaddr_in6 *sin; 559 struct sockaddr_dl *sdl; 560 extern int h_errno; 561 struct in6_nbrinfo *nbi; 562 struct timeval time; 563 int addrwidth; 564 int llwidth; 565 int ifwidth; 566 char flgbuf[8]; 567 char *ifname; 568 569 /* Print header */ 570 if (!tflag && !cflag) 571 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %4s\n", 572 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 573 W_IF, W_IF, "Netif", "Expire", "S", "Flgs"); 574 575 again:; 576 mib[0] = CTL_NET; 577 mib[1] = PF_ROUTE; 578 mib[2] = 0; 579 mib[3] = AF_INET6; 580 mib[4] = NET_RT_FLAGS; 581 mib[5] = RTF_LLINFO; 582 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 583 err(1, "sysctl(PF_ROUTE estimate)"); 584 if (needed > 0) { 585 if ((buf = malloc(needed)) == NULL) 586 errx(1, "malloc"); 587 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 588 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 589 lim = buf + needed; 590 } else 591 buf = lim = NULL; 592 593 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 594 int isrouter = 0, prbs = 0; 595 596 rtm = (struct rt_msghdr *)next; 597 sin = (struct sockaddr_in6 *)(rtm + 1); 598 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 599 600 /* 601 * Some OSes can produce a route that has the LINK flag but 602 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 603 * and BSD/OS, where xx is not the interface identifier on 604 * lo0). Such routes entry would annoy getnbrinfo() below, 605 * so we skip them. 606 * XXX: such routes should have the GATEWAY flag, not the 607 * LINK flag. However, there is rotten routing software 608 * that advertises all routes that have the GATEWAY flag. 609 * Thus, KAME kernel intentionally does not set the LINK flag. 610 * What is to be fixed is not ndp, but such routing software 611 * (and the kernel workaround)... 612 */ 613 if (sdl->sdl_family != AF_LINK) 614 continue; 615 616 if (!(rtm->rtm_flags & RTF_HOST)) 617 continue; 618 619 if (addr) { 620 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 621 continue; 622 found_entry = 1; 623 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 624 continue; 625 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 626 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 627 /* XXX: should scope id be filled in the kernel? */ 628 if (sin->sin6_scope_id == 0) 629 sin->sin6_scope_id = sdl->sdl_index; 630 #ifdef __KAME__ 631 /* KAME specific hack; removed the embedded id */ 632 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 633 #endif 634 } 635 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 636 sizeof(host_buf), NULL, 0, 637 (nflag ? NI_NUMERICHOST : 0)); 638 if (cflag == 1) { 639 #ifdef RTF_WASCLONED 640 if (rtm->rtm_flags & RTF_WASCLONED) 641 delete(host_buf); 642 #elif defined(RTF_CLONED) 643 if (rtm->rtm_flags & RTF_CLONED) 644 delete(host_buf); 645 #else 646 delete(host_buf); 647 #endif 648 continue; 649 } 650 gettimeofday(&time, 0); 651 if (tflag) 652 ts_print(&time); 653 654 addrwidth = strlen(host_buf); 655 if (addrwidth < W_ADDR) 656 addrwidth = W_ADDR; 657 llwidth = strlen(ether_str(sdl)); 658 if (W_ADDR + W_LL - addrwidth > llwidth) 659 llwidth = W_ADDR + W_LL - addrwidth; 660 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 661 if (!ifname) 662 ifname = "?"; 663 ifwidth = strlen(ifname); 664 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 665 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 666 667 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 668 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 669 670 /* Print neighbor discovery specific informations */ 671 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 672 if (nbi) { 673 if (nbi->expire > time.tv_sec) { 674 printf(" %-9.9s", 675 sec2str(nbi->expire - time.tv_sec)); 676 } else if (nbi->expire == 0) 677 printf(" %-9.9s", "permanent"); 678 else 679 printf(" %-9.9s", "expired"); 680 681 switch (nbi->state) { 682 case ND6_LLINFO_NOSTATE: 683 printf(" N"); 684 break; 685 #ifdef ND6_LLINFO_WAITDELETE 686 case ND6_LLINFO_WAITDELETE: 687 printf(" W"); 688 break; 689 #endif 690 case ND6_LLINFO_INCOMPLETE: 691 printf(" I"); 692 break; 693 case ND6_LLINFO_REACHABLE: 694 printf(" R"); 695 break; 696 case ND6_LLINFO_STALE: 697 printf(" S"); 698 break; 699 case ND6_LLINFO_DELAY: 700 printf(" D"); 701 break; 702 case ND6_LLINFO_PROBE: 703 printf(" P"); 704 break; 705 default: 706 printf(" ?"); 707 break; 708 } 709 710 isrouter = nbi->isrouter; 711 prbs = nbi->asked; 712 } else { 713 warnx("failed to get neighbor information"); 714 printf(" "); 715 } 716 717 /* 718 * other flags. R: router, P: proxy, W: ?? 719 */ 720 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 721 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 722 isrouter ? "R" : "", 723 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 724 } else { 725 sin = (struct sockaddr_in6 *) 726 (sdl->sdl_len + (char *)sdl); 727 #if 0 /* W and P are mystery even for us */ 728 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 729 isrouter ? "R" : "", 730 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) ? "P" : "", 731 (sin->sin6_len != sizeof(struct sockaddr_in6)) ? "W" : "", 732 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 733 #else 734 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 735 isrouter ? "R" : "", 736 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 737 #endif 738 } 739 printf(" %s", flgbuf); 740 741 if (prbs) 742 printf(" %d", prbs); 743 744 printf("\n"); 745 } 746 if (buf != NULL) 747 free(buf); 748 749 if (repeat) { 750 printf("\n"); 751 sleep(repeat); 752 goto again; 753 } 754 } 755 756 static struct in6_nbrinfo * 757 getnbrinfo(addr, ifindex, warning) 758 struct in6_addr *addr; 759 int ifindex; 760 int warning; 761 { 762 static struct in6_nbrinfo nbi; 763 int s; 764 765 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 766 err(1, "socket"); 767 768 bzero(&nbi, sizeof(nbi)); 769 if_indextoname(ifindex, nbi.ifname); 770 nbi.addr = *addr; 771 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 772 if (warning) 773 warn("ioctl(SIOCGNBRINFO_IN6)"); 774 close(s); 775 return(NULL); 776 } 777 778 close(s); 779 return(&nbi); 780 } 781 782 static char * 783 ether_str(sdl) 784 struct sockaddr_dl *sdl; 785 { 786 static char hbuf[NI_MAXHOST]; 787 788 if (sdl->sdl_alen) { 789 if (getnameinfo((struct sockaddr *)sdl, sdl->sdl_len, 790 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) 791 snprintf(hbuf, sizeof(hbuf), "<invalid>"); 792 } else 793 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 794 795 return(hbuf); 796 } 797 798 int 799 ndp_ether_aton(a, n) 800 char *a; 801 u_char *n; 802 { 803 int i, o[6]; 804 805 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 806 &o[3], &o[4], &o[5]); 807 if (i != 6) { 808 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 809 return (1); 810 } 811 for (i=0; i<6; i++) 812 n[i] = o[i]; 813 return (0); 814 } 815 816 void 817 usage() 818 { 819 printf("usage: ndp hostname\n"); 820 printf(" ndp -a[nt]\n"); 821 printf(" ndp [-nt] -A wait\n"); 822 printf(" ndp -c[nt]\n"); 823 printf(" ndp -d[nt] hostname\n"); 824 printf(" ndp -f[nt] filename\n"); 825 printf(" ndp -i interface [flags...]\n"); 826 #ifdef SIOCSDEFIFACE_IN6 827 printf(" ndp -I [interface|delete]\n"); 828 #endif 829 printf(" ndp -p\n"); 830 printf(" ndp -r\n"); 831 printf(" ndp -s hostname ether_addr [temp] [proxy]\n"); 832 printf(" ndp -H\n"); 833 printf(" ndp -P\n"); 834 printf(" ndp -R\n"); 835 exit(1); 836 } 837 838 int 839 rtmsg(cmd) 840 int cmd; 841 { 842 static int seq; 843 int rlen; 844 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 845 register char *cp = m_rtmsg.m_space; 846 register int l; 847 848 errno = 0; 849 if (cmd == RTM_DELETE) 850 goto doit; 851 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 852 rtm->rtm_flags = flags; 853 rtm->rtm_version = RTM_VERSION; 854 855 switch (cmd) { 856 default: 857 fprintf(stderr, "ndp: internal wrong cmd\n"); 858 exit(1); 859 case RTM_ADD: 860 rtm->rtm_addrs |= RTA_GATEWAY; 861 if (expire_time) { 862 rtm->rtm_rmx.rmx_expire = expire_time; 863 rtm->rtm_inits = RTV_EXPIRE; 864 } 865 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 866 if (rtm->rtm_flags & RTF_ANNOUNCE) { 867 rtm->rtm_flags &= ~RTF_HOST; 868 rtm->rtm_flags |= RTA_NETMASK; 869 } 870 /* FALLTHROUGH */ 871 case RTM_GET: 872 rtm->rtm_addrs |= RTA_DST; 873 } 874 #define NEXTADDR(w, s) \ 875 if (rtm->rtm_addrs & (w)) { \ 876 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 877 878 NEXTADDR(RTA_DST, sin_m); 879 NEXTADDR(RTA_GATEWAY, sdl_m); 880 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 881 NEXTADDR(RTA_NETMASK, so_mask); 882 883 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 884 doit: 885 l = rtm->rtm_msglen; 886 rtm->rtm_seq = ++seq; 887 rtm->rtm_type = cmd; 888 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 889 if (errno != ESRCH || cmd != RTM_DELETE) { 890 err(1, "writing to routing socket"); 891 /* NOTREACHED */ 892 } 893 } 894 do { 895 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 896 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 897 if (l < 0) 898 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 899 strerror(errno)); 900 return (0); 901 } 902 903 void 904 ifinfo(argc, argv) 905 int argc; 906 char **argv; 907 { 908 struct in6_ndireq nd; 909 int i, s; 910 char *ifname = argv[0]; 911 u_int32_t newflags; 912 #ifdef IPV6CTL_USETEMPADDR 913 u_int8_t nullbuf[8]; 914 #endif 915 916 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 917 err(1, "socket"); 918 /* NOTREACHED */ 919 } 920 bzero(&nd, sizeof(nd)); 921 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 922 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 923 err(1, "ioctl(SIOCGIFINFO_IN6)"); 924 /* NOTREACHED */ 925 } 926 #define ND nd.ndi 927 newflags = ND.flags; 928 for (i = 1; i < argc; i++) { 929 int clear = 0; 930 char *cp = argv[i]; 931 932 if (*cp == '-') { 933 clear = 1; 934 cp++; 935 } 936 937 #define SETFLAG(s, f) \ 938 do {\ 939 if (strcmp(cp, (s)) == 0) {\ 940 if (clear)\ 941 newflags &= ~(f);\ 942 else\ 943 newflags |= (f);\ 944 }\ 945 } while (0) 946 SETFLAG("nud", ND6_IFF_PERFORMNUD); 947 #ifdef ND6_IFF_ACCEPT_RTADV 948 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 949 #endif 950 #ifdef ND6_IFF_PREFER_SOURCE 951 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 952 #endif 953 954 ND.flags = newflags; 955 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 956 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 957 /* NOTREACHED */ 958 } 959 #undef SETFLAG 960 } 961 962 if (!ND.initialized) { 963 errx(1, "%s: not initialized yet", ifname); 964 /* NOTREACHED */ 965 } 966 967 printf("linkmtu=%d", ND.linkmtu); 968 printf(", curhlim=%d", ND.chlim); 969 printf(", basereachable=%ds%dms", 970 ND.basereachable / 1000, ND.basereachable % 1000); 971 printf(", reachable=%ds", ND.reachable); 972 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 973 #ifdef IPV6CTL_USETEMPADDR 974 memset(nullbuf, 0, sizeof(nullbuf)); 975 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 976 int j; 977 u_int8_t *rbuf; 978 979 for (i = 0; i < 3; i++) { 980 switch (i) { 981 case 0: 982 printf("\nRandom seed(0): "); 983 rbuf = ND.randomseed0; 984 break; 985 case 1: 986 printf("\nRandom seed(1): "); 987 rbuf = ND.randomseed1; 988 break; 989 case 2: 990 printf("\nRandom ID: "); 991 rbuf = ND.randomid; 992 break; 993 } 994 for (j = 0; j < 8; j++) 995 printf("%02x", rbuf[j]); 996 } 997 } 998 #endif 999 if (ND.flags) { 1000 printf("\nFlags: "); 1001 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1002 printf("PERFORMNUD "); 1003 #ifdef ND6_IFF_ACCEPT_RTADV 1004 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1005 printf("ACCEPT_RA "); 1006 #endif 1007 #ifdef ND6_IFF_PREFER_SOURCE 1008 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1009 printf("PREFER_SRC "); 1010 #endif 1011 } 1012 putc('\n', stdout); 1013 #undef ND 1014 1015 close(s); 1016 } 1017 1018 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1019 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1020 #endif 1021 1022 void 1023 rtrlist() 1024 { 1025 #ifdef ICMPV6CTL_ND6_DRLIST 1026 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1027 char *buf; 1028 struct in6_defrouter *p, *ep; 1029 size_t l; 1030 struct timeval time; 1031 1032 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1033 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1034 /*NOTREACHED*/ 1035 } 1036 buf = malloc(l); 1037 if (!buf) { 1038 errx(1, "not enough core"); 1039 /*NOTREACHED*/ 1040 } 1041 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1042 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1043 /*NOTREACHED*/ 1044 } 1045 1046 ep = (struct in6_defrouter *)(buf + l); 1047 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1048 int rtpref; 1049 1050 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1051 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1052 (nflag ? NI_NUMERICHOST : 0)) != 0) 1053 strlcpy(host_buf, "?", sizeof(host_buf)); 1054 1055 printf("%s if=%s", host_buf, 1056 if_indextoname(p->if_index, ifix_buf)); 1057 printf(", flags=%s%s", 1058 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1059 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1060 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1061 printf(", pref=%s", rtpref_str[rtpref]); 1062 1063 gettimeofday(&time, 0); 1064 if (p->expire == 0) 1065 printf(", expire=Never\n"); 1066 else 1067 printf(", expire=%s\n", 1068 sec2str(p->expire - time.tv_sec)); 1069 } 1070 free(buf); 1071 #else 1072 struct in6_drlist dr; 1073 int s, i; 1074 struct timeval time; 1075 1076 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1077 err(1, "socket"); 1078 /* NOTREACHED */ 1079 } 1080 bzero(&dr, sizeof(dr)); 1081 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1082 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1083 err(1, "ioctl(SIOCGDRLST_IN6)"); 1084 /* NOTREACHED */ 1085 } 1086 #define DR dr.defrouter[i] 1087 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1088 struct sockaddr_in6 sin6; 1089 1090 bzero(&sin6, sizeof(sin6)); 1091 sin6.sin6_family = AF_INET6; 1092 sin6.sin6_len = sizeof(sin6); 1093 sin6.sin6_addr = DR.rtaddr; 1094 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1095 sizeof(host_buf), NULL, 0, 1096 (nflag ? NI_NUMERICHOST : 0)); 1097 1098 printf("%s if=%s", host_buf, 1099 if_indextoname(DR.if_index, ifix_buf)); 1100 printf(", flags=%s%s", 1101 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1102 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1103 gettimeofday(&time, 0); 1104 if (DR.expire == 0) 1105 printf(", expire=Never\n"); 1106 else 1107 printf(", expire=%s\n", 1108 sec2str(DR.expire - time.tv_sec)); 1109 } 1110 #undef DR 1111 close(s); 1112 #endif 1113 } 1114 1115 void 1116 plist() 1117 { 1118 #ifdef ICMPV6CTL_ND6_PRLIST 1119 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1120 char *buf; 1121 struct in6_prefix *p, *ep, *n; 1122 struct sockaddr_in6 *advrtr; 1123 size_t l; 1124 struct timeval time; 1125 const int niflags = NI_NUMERICHOST; 1126 int ninflags = nflag ? NI_NUMERICHOST : 0; 1127 char namebuf[NI_MAXHOST]; 1128 1129 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1130 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1131 /*NOTREACHED*/ 1132 } 1133 buf = malloc(l); 1134 if (!buf) { 1135 errx(1, "not enough core"); 1136 /*NOTREACHED*/ 1137 } 1138 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1139 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1140 /*NOTREACHED*/ 1141 } 1142 1143 ep = (struct in6_prefix *)(buf + l); 1144 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1145 advrtr = (struct sockaddr_in6 *)(p + 1); 1146 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1147 1148 if (getnameinfo((struct sockaddr *)&p->prefix, 1149 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1150 NULL, 0, niflags) != 0) 1151 strlcpy(namebuf, "?", sizeof(namebuf)); 1152 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1153 if_indextoname(p->if_index, ifix_buf)); 1154 1155 gettimeofday(&time, 0); 1156 /* 1157 * meaning of fields, especially flags, is very different 1158 * by origin. notify the difference to the users. 1159 */ 1160 printf("flags=%s%s%s%s%s", 1161 p->raflags.onlink ? "L" : "", 1162 p->raflags.autonomous ? "A" : "", 1163 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1164 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1165 #ifdef NDPRF_HOME 1166 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1167 #else 1168 "" 1169 #endif 1170 ); 1171 if (p->vltime == ND6_INFINITE_LIFETIME) 1172 printf(" vltime=infinity"); 1173 else 1174 printf(" vltime=%lu", (unsigned long)p->vltime); 1175 if (p->pltime == ND6_INFINITE_LIFETIME) 1176 printf(", pltime=infinity"); 1177 else 1178 printf(", pltime=%lu", (unsigned long)p->pltime); 1179 if (p->expire == 0) 1180 printf(", expire=Never"); 1181 else if (p->expire >= time.tv_sec) 1182 printf(", expire=%s", 1183 sec2str(p->expire - time.tv_sec)); 1184 else 1185 printf(", expired"); 1186 printf(", ref=%d", p->refcnt); 1187 printf("\n"); 1188 /* 1189 * "advertising router" list is meaningful only if the prefix 1190 * information is from RA. 1191 */ 1192 if (p->advrtrs) { 1193 int j; 1194 struct sockaddr_in6 *sin6; 1195 1196 sin6 = advrtr; 1197 printf(" advertised by\n"); 1198 for (j = 0; j < p->advrtrs; j++) { 1199 struct in6_nbrinfo *nbi; 1200 1201 if (getnameinfo((struct sockaddr *)sin6, 1202 sin6->sin6_len, namebuf, sizeof(namebuf), 1203 NULL, 0, ninflags) != 0) 1204 strlcpy(namebuf, "?", sizeof(namebuf)); 1205 printf(" %s", namebuf); 1206 1207 nbi = getnbrinfo(&sin6->sin6_addr, 1208 p->if_index, 0); 1209 if (nbi) { 1210 switch (nbi->state) { 1211 case ND6_LLINFO_REACHABLE: 1212 case ND6_LLINFO_STALE: 1213 case ND6_LLINFO_DELAY: 1214 case ND6_LLINFO_PROBE: 1215 printf(" (reachable)\n"); 1216 break; 1217 default: 1218 printf(" (unreachable)\n"); 1219 } 1220 } else 1221 printf(" (no neighbor state)\n"); 1222 sin6++; 1223 } 1224 } else 1225 printf(" No advertising router\n"); 1226 } 1227 free(buf); 1228 #else 1229 struct in6_prlist pr; 1230 int s, i; 1231 struct timeval time; 1232 1233 gettimeofday(&time, 0); 1234 1235 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1236 err(1, "socket"); 1237 /* NOTREACHED */ 1238 } 1239 bzero(&pr, sizeof(pr)); 1240 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1241 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1242 err(1, "ioctl(SIOCGPRLST_IN6)"); 1243 /* NOTREACHED */ 1244 } 1245 #define PR pr.prefix[i] 1246 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1247 struct sockaddr_in6 p6; 1248 char namebuf[NI_MAXHOST]; 1249 int niflags; 1250 1251 #ifdef NDPRF_ONLINK 1252 p6 = PR.prefix; 1253 #else 1254 memset(&p6, 0, sizeof(p6)); 1255 p6.sin6_family = AF_INET6; 1256 p6.sin6_len = sizeof(p6); 1257 p6.sin6_addr = PR.prefix; 1258 #endif 1259 1260 /* 1261 * copy link index to sin6_scope_id field. 1262 * XXX: KAME specific. 1263 */ 1264 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1265 u_int16_t linkid; 1266 1267 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1268 sizeof(linkid)); 1269 linkid = ntohs(linkid); 1270 p6.sin6_scope_id = linkid; 1271 p6.sin6_addr.s6_addr[2] = 0; 1272 p6.sin6_addr.s6_addr[3] = 0; 1273 } 1274 1275 niflags = NI_NUMERICHOST; 1276 if (getnameinfo((struct sockaddr *)&p6, 1277 sizeof(p6), namebuf, sizeof(namebuf), 1278 NULL, 0, niflags)) { 1279 warnx("getnameinfo failed"); 1280 continue; 1281 } 1282 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1283 if_indextoname(PR.if_index, ifix_buf)); 1284 1285 gettimeofday(&time, 0); 1286 /* 1287 * meaning of fields, especially flags, is very different 1288 * by origin. notify the difference to the users. 1289 */ 1290 #if 0 1291 printf(" %s", 1292 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1293 #endif 1294 #ifdef NDPRF_ONLINK 1295 printf("flags=%s%s%s%s%s", 1296 PR.raflags.onlink ? "L" : "", 1297 PR.raflags.autonomous ? "A" : "", 1298 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1299 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1300 #ifdef NDPRF_HOME 1301 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1302 #else 1303 "" 1304 #endif 1305 ); 1306 #else 1307 printf("flags=%s%s", 1308 PR.raflags.onlink ? "L" : "", 1309 PR.raflags.autonomous ? "A" : ""); 1310 #endif 1311 if (PR.vltime == ND6_INFINITE_LIFETIME) 1312 printf(" vltime=infinity"); 1313 else 1314 printf(" vltime=%lu", PR.vltime); 1315 if (PR.pltime == ND6_INFINITE_LIFETIME) 1316 printf(", pltime=infinity"); 1317 else 1318 printf(", pltime=%lu", PR.pltime); 1319 if (PR.expire == 0) 1320 printf(", expire=Never"); 1321 else if (PR.expire >= time.tv_sec) 1322 printf(", expire=%s", 1323 sec2str(PR.expire - time.tv_sec)); 1324 else 1325 printf(", expired"); 1326 #ifdef NDPRF_ONLINK 1327 printf(", ref=%d", PR.refcnt); 1328 #endif 1329 #if 0 1330 switch (PR.origin) { 1331 case PR_ORIG_RA: 1332 printf(", origin=RA"); 1333 break; 1334 case PR_ORIG_RR: 1335 printf(", origin=RR"); 1336 break; 1337 case PR_ORIG_STATIC: 1338 printf(", origin=static"); 1339 break; 1340 case PR_ORIG_KERNEL: 1341 printf(", origin=kernel"); 1342 break; 1343 default: 1344 printf(", origin=?"); 1345 break; 1346 } 1347 #endif 1348 printf("\n"); 1349 /* 1350 * "advertising router" list is meaningful only if the prefix 1351 * information is from RA. 1352 */ 1353 if (0 && /* prefix origin is almost obsolted */ 1354 PR.origin != PR_ORIG_RA) 1355 ; 1356 else if (PR.advrtrs) { 1357 int j; 1358 printf(" advertised by\n"); 1359 for (j = 0; j < PR.advrtrs; j++) { 1360 struct sockaddr_in6 sin6; 1361 struct in6_nbrinfo *nbi; 1362 1363 bzero(&sin6, sizeof(sin6)); 1364 sin6.sin6_family = AF_INET6; 1365 sin6.sin6_len = sizeof(sin6); 1366 sin6.sin6_addr = PR.advrtr[j]; 1367 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1368 getnameinfo((struct sockaddr *)&sin6, 1369 sin6.sin6_len, host_buf, 1370 sizeof(host_buf), NULL, 0, 1371 (nflag ? NI_NUMERICHOST : 0)); 1372 printf(" %s", host_buf); 1373 1374 nbi = getnbrinfo(&sin6.sin6_addr, 1375 PR.if_index, 0); 1376 if (nbi) { 1377 switch (nbi->state) { 1378 case ND6_LLINFO_REACHABLE: 1379 case ND6_LLINFO_STALE: 1380 case ND6_LLINFO_DELAY: 1381 case ND6_LLINFO_PROBE: 1382 printf(" (reachable)\n"); 1383 break; 1384 default: 1385 printf(" (unreachable)\n"); 1386 } 1387 } else 1388 printf(" (no neighbor state)\n"); 1389 } 1390 if (PR.advrtrs > DRLSTSIZ) 1391 printf(" and %d routers\n", 1392 PR.advrtrs - DRLSTSIZ); 1393 } else 1394 printf(" No advertising router\n"); 1395 } 1396 #undef PR 1397 close(s); 1398 #endif 1399 } 1400 1401 void 1402 pfx_flush() 1403 { 1404 char dummyif[IFNAMSIZ+8]; 1405 int s; 1406 1407 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1408 err(1, "socket"); 1409 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1410 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1411 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1412 } 1413 1414 void 1415 rtr_flush() 1416 { 1417 char dummyif[IFNAMSIZ+8]; 1418 int s; 1419 1420 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1421 err(1, "socket"); 1422 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1423 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1424 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1425 1426 close(s); 1427 } 1428 1429 void 1430 harmonize_rtr() 1431 { 1432 char dummyif[IFNAMSIZ+8]; 1433 int s; 1434 1435 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1436 err(1, "socket"); 1437 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1438 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1439 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1440 1441 close(s); 1442 } 1443 1444 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1445 static void 1446 setdefif(ifname) 1447 char *ifname; 1448 { 1449 struct in6_ndifreq ndifreq; 1450 unsigned int ifindex; 1451 1452 if (strcasecmp(ifname, "delete") == 0) 1453 ifindex = 0; 1454 else { 1455 if ((ifindex = if_nametoindex(ifname)) == 0) 1456 err(1, "failed to resolve i/f index for %s", ifname); 1457 } 1458 1459 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1460 err(1, "socket"); 1461 1462 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1463 ndifreq.ifindex = ifindex; 1464 1465 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1466 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1467 1468 close(s); 1469 } 1470 1471 static void 1472 getdefif() 1473 { 1474 struct in6_ndifreq ndifreq; 1475 char ifname[IFNAMSIZ+8]; 1476 1477 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1478 err(1, "socket"); 1479 1480 memset(&ndifreq, 0, sizeof(ndifreq)); 1481 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1482 1483 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1484 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1485 1486 if (ndifreq.ifindex == 0) 1487 printf("No default interface.\n"); 1488 else { 1489 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1490 err(1, "failed to resolve ifname for index %lu", 1491 ndifreq.ifindex); 1492 printf("ND default interface = %s\n", ifname); 1493 } 1494 1495 close(s); 1496 } 1497 #endif 1498 1499 static char * 1500 sec2str(total) 1501 time_t total; 1502 { 1503 static char result[256]; 1504 int days, hours, mins, secs; 1505 int first = 1; 1506 char *p = result; 1507 char *ep = &result[sizeof(result)]; 1508 int n; 1509 1510 days = total / 3600 / 24; 1511 hours = (total / 3600) % 24; 1512 mins = (total / 60) % 60; 1513 secs = total % 60; 1514 1515 if (days) { 1516 first = 0; 1517 n = snprintf(p, ep - p, "%dd", days); 1518 if (n < 0 || n >= ep - p) 1519 return "?"; 1520 p += n; 1521 } 1522 if (!first || hours) { 1523 first = 0; 1524 n = snprintf(p, ep - p, "%dh", hours); 1525 if (n < 0 || n >= ep - p) 1526 return "?"; 1527 p += n; 1528 } 1529 if (!first || mins) { 1530 first = 0; 1531 n = snprintf(p, ep - p, "%dm", mins); 1532 if (n < 0 || n >= ep - p) 1533 return "?"; 1534 p += n; 1535 } 1536 snprintf(p, ep - p, "%ds", secs); 1537 1538 return(result); 1539 } 1540 1541 /* 1542 * Print the timestamp 1543 * from tcpdump/util.c 1544 */ 1545 static void 1546 ts_print(tvp) 1547 const struct timeval *tvp; 1548 { 1549 int s; 1550 1551 /* Default */ 1552 s = (tvp->tv_sec + thiszone) % 86400; 1553 (void)printf("%02d:%02d:%02d.%06u ", 1554 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1555 } 1556
Indexes created Sun Sep 28 07:09:56 GMT 2025