ndp.c revision 1.20
1 /* $NetBSD: ndp.c,v 1.20 2002/05/29 22:23:06 itojun Exp $ */ 2 /* $KAME: ndp.c,v 1.89 2002/05/29 22:21:46 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_dl.h> 91 #include <net/if_types.h> 92 #include <net/route.h> 93 94 #include <netinet/in.h> 95 96 #include <netinet/icmp6.h> 97 #include <netinet6/in6_var.h> 98 #include <netinet6/nd6.h> 99 100 #include <arpa/inet.h> 101 102 #include <netdb.h> 103 #include <errno.h> 104 #include <nlist.h> 105 #include <stdio.h> 106 #include <string.h> 107 #include <paths.h> 108 #include <err.h> 109 #include <stdlib.h> 110 #include <fcntl.h> 111 #include <unistd.h> 112 #include <err.h> 113 #include "gmt2local.h" 114 115 /* packing rule for routing socket */ 116 #define ROUNDUP(a) \ 117 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 118 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 119 120 static pid_t pid; 121 static int cflag; 122 static int nflag; 123 static int tflag; 124 static int32_t thiszone; /* time difference with gmt */ 125 static int s = -1; 126 static int repeat = 0; 127 128 char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 129 char host_buf[NI_MAXHOST]; /* getnameinfo() */ 130 char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 131 132 int main __P((int, char **)); 133 int file __P((char *)); 134 void getsocket __P((void)); 135 int set __P((int, char **)); 136 void get __P((char *)); 137 int delete __P((char *)); 138 void dump __P((struct in6_addr *)); 139 static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *addr, 140 int ifindex, int)); 141 static char *ether_str __P((struct sockaddr_dl *)); 142 int ndp_ether_aton __P((char *, u_char *)); 143 void usage __P((void)); 144 int rtmsg __P((int)); 145 void ifinfo __P((int, char **)); 146 void rtrlist __P((void)); 147 void plist __P((void)); 148 void pfx_flush __P((void)); 149 void rtrlist __P((void)); 150 void rtr_flush __P((void)); 151 void harmonize_rtr __P((void)); 152 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 153 static void getdefif __P((void)); 154 static void setdefif __P((char *)); 155 #endif 156 static char *sec2str __P((time_t t)); 157 static char *ether_str __P((struct sockaddr_dl *sdl)); 158 static void ts_print __P((const struct timeval *)); 159 160 #ifdef ICMPV6CTL_ND6_DRLIST 161 static char *rtpref_str[] = { 162 "medium", /* 00 */ 163 "high", /* 01 */ 164 "rsv", /* 10 */ 165 "low" /* 11 */ 166 }; 167 #endif 168 169 int 170 main(argc, argv) 171 int argc; 172 char **argv; 173 { 174 int ch; 175 int aflag = 0, dflag = 0, sflag = 0, Hflag = 0, 176 pflag = 0, rflag = 0, Pflag = 0, Rflag = 0; 177 178 pid = getpid(); 179 thiszone = gmt2local(0); 180 while ((ch = getopt(argc, argv, "acndfIilprstA:HPR")) != -1) 181 switch ((char)ch) { 182 case 'a': 183 aflag = 1; 184 break; 185 case 'c': 186 cflag = 1; 187 break; 188 case 'd': 189 dflag = 1; 190 break; 191 case 'I': 192 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 193 if (argc > 2) 194 setdefif(argv[2]); 195 getdefif(); /* always call it to print the result */ 196 exit(0); 197 #else 198 errx(1, "not supported yet"); 199 /*NOTREACHED*/ 200 #endif 201 case 'i' : 202 argc -= optind; 203 argv += optind; 204 if (argc < 1) 205 usage(); 206 ifinfo(argc, argv); 207 exit(0); 208 case 'n': 209 nflag = 1; 210 continue; 211 case 'p': 212 pflag = 1; 213 break; 214 case 'f' : 215 if (argc != 3) 216 usage(); 217 file(argv[2]); 218 exit(0); 219 case 'l' : 220 /* obsolete, ignored */ 221 break; 222 case 'r' : 223 rflag = 1; 224 break; 225 case 's': 226 sflag = 1; 227 break; 228 case 't': 229 tflag = 1; 230 break; 231 case 'A': 232 aflag = 1; 233 repeat = atoi(optarg); 234 if (repeat < 0) 235 usage(); 236 break; 237 case 'H' : 238 Hflag = 1; 239 break; 240 case 'P': 241 Pflag = 1; 242 break; 243 case 'R': 244 Rflag = 1; 245 break; 246 default: 247 usage(); 248 } 249 250 argc -= optind; 251 argv += optind; 252 253 if (aflag || cflag) { 254 dump(0); 255 exit(0); 256 } 257 if (dflag) { 258 if (argc != 1) 259 usage(); 260 delete(argv[0]); 261 exit(0); 262 } 263 if (pflag) { 264 plist(); 265 exit(0); 266 } 267 if (rflag) { 268 rtrlist(); 269 exit(0); 270 } 271 if (sflag) { 272 if (argc < 2 || argc > 4) 273 usage(); 274 exit(set(argc, argv) ? 1 : 0); 275 } 276 if (Hflag) { 277 harmonize_rtr(); 278 exit(0); 279 } 280 if (Pflag) { 281 pfx_flush(); 282 exit(0); 283 } 284 if (Rflag) { 285 rtr_flush(); 286 exit(0); 287 } 288 289 if (argc != 1) 290 usage(); 291 get(argv[0]); 292 exit(0); 293 } 294 295 /* 296 * Process a file to set standard ndp entries 297 */ 298 int 299 file(name) 300 char *name; 301 { 302 FILE *fp; 303 int i, retval; 304 char line[100], arg[5][50], *args[5]; 305 306 if ((fp = fopen(name, "r")) == NULL) { 307 fprintf(stderr, "ndp: cannot open %s\n", name); 308 exit(1); 309 } 310 args[0] = &arg[0][0]; 311 args[1] = &arg[1][0]; 312 args[2] = &arg[2][0]; 313 args[3] = &arg[3][0]; 314 args[4] = &arg[4][0]; 315 retval = 0; 316 while(fgets(line, 100, fp) != NULL) { 317 i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2], 318 arg[3], arg[4]); 319 if (i < 2) { 320 fprintf(stderr, "ndp: bad line: %s\n", line); 321 retval = 1; 322 continue; 323 } 324 if (set(i, args)) 325 retval = 1; 326 } 327 fclose(fp); 328 return (retval); 329 } 330 331 void 332 getsocket() 333 { 334 if (s < 0) { 335 s = socket(PF_ROUTE, SOCK_RAW, 0); 336 if (s < 0) { 337 err(1, "ndp: socket"); 338 /* NOTREACHED */ 339 } 340 } 341 } 342 343 struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 344 struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 345 struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 346 int expire_time, flags, found_entry; 347 struct { 348 struct rt_msghdr m_rtm; 349 char m_space[512]; 350 } m_rtmsg; 351 352 /* 353 * Set an individual neighbor cache entry 354 */ 355 int 356 set(argc, argv) 357 int argc; 358 char **argv; 359 { 360 register struct sockaddr_in6 *sin = &sin_m; 361 register struct sockaddr_dl *sdl; 362 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 363 struct addrinfo hints, *res; 364 int gai_error; 365 u_char *ea; 366 char *host = argv[0], *eaddr = argv[1]; 367 368 getsocket(); 369 argc -= 2; 370 argv += 2; 371 sdl_m = blank_sdl; 372 sin_m = blank_sin; 373 374 bzero(&hints, sizeof(hints)); 375 hints.ai_family = AF_INET6; 376 gai_error = getaddrinfo(host, NULL, &hints, &res); 377 if (gai_error) { 378 fprintf(stderr, "ndp: %s: %s\n", host, 379 gai_strerror(gai_error)); 380 return 1; 381 } 382 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 383 #ifdef __KAME__ 384 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 385 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 386 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 387 } 388 #endif 389 ea = (u_char *)LLADDR(&sdl_m); 390 if (ndp_ether_aton(eaddr, ea) == 0) 391 sdl_m.sdl_alen = 6; 392 flags = expire_time = 0; 393 while (argc-- > 0) { 394 if (strncmp(argv[0], "temp", 4) == 0) { 395 struct timeval time; 396 gettimeofday(&time, 0); 397 expire_time = time.tv_sec + 20 * 60; 398 } else if (strncmp(argv[0], "proxy", 5) == 0) 399 flags |= RTF_ANNOUNCE; 400 argv++; 401 } 402 if (rtmsg(RTM_GET) < 0) { 403 errx(1, "RTM_GET(%s) failed", host); 404 /* NOTREACHED */ 405 } 406 sin = (struct sockaddr_in6 *)(rtm + 1); 407 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 408 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 409 if (sdl->sdl_family == AF_LINK && 410 (rtm->rtm_flags & RTF_LLINFO) && 411 !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) { 412 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 413 case IFT_ISO88024: case IFT_ISO88025: 414 goto overwrite; 415 } 416 /* 417 * IPv4 arp command retries with sin_other = SIN_PROXY here. 418 */ 419 fprintf(stderr, "set: cannot configure a new entry\n"); 420 return 1; 421 } 422 423 overwrite: 424 if (sdl->sdl_family != AF_LINK) { 425 printf("cannot intuit interface index and type for %s\n", host); 426 return (1); 427 } 428 sdl_m.sdl_type = sdl->sdl_type; 429 sdl_m.sdl_index = sdl->sdl_index; 430 return (rtmsg(RTM_ADD)); 431 } 432 433 /* 434 * Display an individual neighbor cache entry 435 */ 436 void 437 get(host) 438 char *host; 439 { 440 struct sockaddr_in6 *sin = &sin_m; 441 struct addrinfo hints, *res; 442 int gai_error; 443 444 sin_m = blank_sin; 445 bzero(&hints, sizeof(hints)); 446 hints.ai_family = AF_INET6; 447 gai_error = getaddrinfo(host, NULL, &hints, &res); 448 if (gai_error) { 449 fprintf(stderr, "ndp: %s: %s\n", host, 450 gai_strerror(gai_error)); 451 return; 452 } 453 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 454 #ifdef __KAME__ 455 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 456 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 457 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 458 } 459 #endif 460 dump(&sin->sin6_addr); 461 if (found_entry == 0) { 462 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 463 sizeof(host_buf), NULL ,0, 464 (nflag ? NI_NUMERICHOST : 0)); 465 printf("%s (%s) -- no entry\n", host, host_buf); 466 exit(1); 467 } 468 } 469 470 /* 471 * Delete a neighbor cache entry 472 */ 473 int 474 delete(host) 475 char *host; 476 { 477 struct sockaddr_in6 *sin = &sin_m; 478 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 479 struct sockaddr_dl *sdl; 480 struct addrinfo hints, *res; 481 int gai_error; 482 483 getsocket(); 484 sin_m = blank_sin; 485 486 bzero(&hints, sizeof(hints)); 487 hints.ai_family = AF_INET6; 488 gai_error = getaddrinfo(host, NULL, &hints, &res); 489 if (gai_error) { 490 fprintf(stderr, "ndp: %s: %s\n", host, 491 gai_strerror(gai_error)); 492 return 1; 493 } 494 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 495 #ifdef __KAME__ 496 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 497 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 498 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 499 } 500 #endif 501 if (rtmsg(RTM_GET) < 0) { 502 errx(1, "RTM_GET(%s) failed", host); 503 /* NOTREACHED */ 504 } 505 sin = (struct sockaddr_in6 *)(rtm + 1); 506 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 507 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 508 if (sdl->sdl_family == AF_LINK && 509 (rtm->rtm_flags & RTF_LLINFO) && 510 !(rtm->rtm_flags & RTF_GATEWAY)) { 511 goto delete; 512 } 513 /* 514 * IPv4 arp command retries with sin_other = SIN_PROXY here. 515 */ 516 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 517 return 1; 518 } 519 520 delete: 521 if (sdl->sdl_family != AF_LINK) { 522 printf("cannot locate %s\n", host); 523 return (1); 524 } 525 if (rtmsg(RTM_DELETE) == 0) { 526 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 527 528 #ifdef __KAME__ 529 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 530 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 531 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 532 } 533 #endif 534 getnameinfo((struct sockaddr *)&s6, 535 s6.sin6_len, host_buf, 536 sizeof(host_buf), NULL, 0, 537 (nflag ? NI_NUMERICHOST : 0)); 538 printf("%s (%s) deleted\n", host, host_buf); 539 } 540 541 return 0; 542 } 543 544 #define W_ADDR 36 545 #define W_LL 17 546 #define W_IF 6 547 548 /* 549 * Dump the entire neighbor cache 550 */ 551 void 552 dump(addr) 553 struct in6_addr *addr; 554 { 555 int mib[6]; 556 size_t needed; 557 char *lim, *buf, *next; 558 struct rt_msghdr *rtm; 559 struct sockaddr_in6 *sin; 560 struct sockaddr_dl *sdl; 561 extern int h_errno; 562 struct in6_nbrinfo *nbi; 563 struct timeval time; 564 int addrwidth; 565 int llwidth; 566 int ifwidth; 567 char flgbuf[8]; 568 char *ifname; 569 570 /* Print header */ 571 if (!tflag && !cflag) 572 printf("%-*.*s %-*.*s %*.*s %-9.9s %1s %4s\n", 573 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 574 W_IF, W_IF, "Netif", "Expire", "S", "Flgs"); 575 576 again:; 577 mib[0] = CTL_NET; 578 mib[1] = PF_ROUTE; 579 mib[2] = 0; 580 mib[3] = AF_INET6; 581 mib[4] = NET_RT_FLAGS; 582 mib[5] = RTF_LLINFO; 583 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 584 err(1, "sysctl(PF_ROUTE estimate)"); 585 if (needed > 0) { 586 if ((buf = malloc(needed)) == NULL) 587 errx(1, "malloc"); 588 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 589 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 590 lim = buf + needed; 591 } else 592 buf = lim = NULL; 593 594 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 595 int isrouter = 0, prbs = 0; 596 597 rtm = (struct rt_msghdr *)next; 598 sin = (struct sockaddr_in6 *)(rtm + 1); 599 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 600 601 /* 602 * Some OSes can produce a route that has the LINK flag but 603 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 604 * and BSD/OS, where xx is not the interface identifier on 605 * lo0). Such routes entry would annoy getnbrinfo() below, 606 * so we skip them. 607 * XXX: such routes should have the GATEWAY flag, not the 608 * LINK flag. However, there is rotten routing software 609 * that advertises all routes that have the GATEWAY flag. 610 * Thus, KAME kernel intentionally does not set the LINK flag. 611 * What is to be fixed is not ndp, but such routing software 612 * (and the kernel workaround)... 613 */ 614 if (sdl->sdl_family != AF_LINK) 615 continue; 616 617 if (!(rtm->rtm_flags & RTF_HOST)) 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 (nflag ? NI_NUMERICHOST : 0)); 639 if (cflag == 1) { 640 #ifdef RTF_WASCLONED 641 if (rtm->rtm_flags & RTF_WASCLONED) 642 delete(host_buf); 643 #elif defined(RTF_CLONED) 644 if (rtm->rtm_flags & RTF_CLONED) 645 delete(host_buf); 646 #else 647 delete(host_buf); 648 #endif 649 continue; 650 } 651 gettimeofday(&time, 0); 652 if (tflag) 653 ts_print(&time); 654 655 addrwidth = strlen(host_buf); 656 if (addrwidth < W_ADDR) 657 addrwidth = W_ADDR; 658 llwidth = strlen(ether_str(sdl)); 659 if (W_ADDR + W_LL - addrwidth > llwidth) 660 llwidth = W_ADDR + W_LL - addrwidth; 661 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 662 if (!ifname) 663 ifname = "?"; 664 ifwidth = strlen(ifname); 665 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 666 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 667 668 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 669 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 670 671 /* Print neighbor discovery specific informations */ 672 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 673 if (nbi) { 674 if (nbi->expire > time.tv_sec) { 675 printf(" %-9.9s", 676 sec2str(nbi->expire - time.tv_sec)); 677 } else if (nbi->expire == 0) 678 printf(" %-9.9s", "permanent"); 679 else 680 printf(" %-9.9s", "expired"); 681 682 switch(nbi->state) { 683 case ND6_LLINFO_NOSTATE: 684 printf(" N"); 685 break; 686 #ifdef ND6_LLINFO_WAITDELETE 687 case ND6_LLINFO_WAITDELETE: 688 printf(" W"); 689 break; 690 #endif 691 case ND6_LLINFO_INCOMPLETE: 692 printf(" I"); 693 break; 694 case ND6_LLINFO_REACHABLE: 695 printf(" R"); 696 break; 697 case ND6_LLINFO_STALE: 698 printf(" S"); 699 break; 700 case ND6_LLINFO_DELAY: 701 printf(" D"); 702 break; 703 case ND6_LLINFO_PROBE: 704 printf(" P"); 705 break; 706 default: 707 printf(" ?"); 708 break; 709 } 710 711 isrouter = nbi->isrouter; 712 prbs = nbi->asked; 713 } else { 714 warnx("failed to get neighbor information"); 715 printf(" "); 716 } 717 718 /* 719 * other flags. R: router, P: proxy, W: ?? 720 */ 721 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 722 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 723 isrouter ? "R" : "", 724 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 725 } else { 726 sin = (struct sockaddr_in6 *) 727 (sdl->sdl_len + (char *)sdl); 728 #if 0 /* W and P are mystery even for us */ 729 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 730 isrouter ? "R" : "", 731 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) 732 ? "P" : "", 733 (sin->sin6_len != sizeof(struct sockaddr_in6)) 734 ? "W" : "", 735 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 736 #else 737 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 738 isrouter ? "R" : "", 739 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 740 #endif 741 } 742 printf(" %s", flgbuf); 743 744 if (prbs) 745 printf(" %d", prbs); 746 747 printf("\n"); 748 } 749 if (buf != NULL) 750 free(buf); 751 752 if (repeat) { 753 printf("\n"); 754 sleep(repeat); 755 goto again; 756 } 757 } 758 759 static struct in6_nbrinfo * 760 getnbrinfo(addr, ifindex, warning) 761 struct in6_addr *addr; 762 int ifindex; 763 int warning; 764 { 765 static struct in6_nbrinfo nbi; 766 int s; 767 768 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 769 err(1, "socket"); 770 771 bzero(&nbi, sizeof(nbi)); 772 if_indextoname(ifindex, nbi.ifname); 773 nbi.addr = *addr; 774 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 775 if (warning) 776 warn("ioctl(SIOCGNBRINFO_IN6)"); 777 close(s); 778 return(NULL); 779 } 780 781 close(s); 782 return(&nbi); 783 } 784 785 static char * 786 ether_str(sdl) 787 struct sockaddr_dl *sdl; 788 { 789 static char hbuf[NI_MAXHOST]; 790 791 if (sdl->sdl_alen) { 792 if (getnameinfo((struct sockaddr *)sdl, sdl->sdl_len, 793 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0) 794 snprintf(hbuf, sizeof(hbuf), "<invalid>"); 795 } else 796 snprintf(hbuf, sizeof(hbuf), "(incomplete)"); 797 798 return(hbuf); 799 } 800 801 int 802 ndp_ether_aton(a, n) 803 char *a; 804 u_char *n; 805 { 806 int i, o[6]; 807 808 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 809 &o[3], &o[4], &o[5]); 810 if (i != 6) { 811 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 812 return (1); 813 } 814 for (i=0; i<6; i++) 815 n[i] = o[i]; 816 return (0); 817 } 818 819 void 820 usage() 821 { 822 printf("usage: ndp hostname\n"); 823 printf(" ndp -a[nt]\n"); 824 printf(" ndp [-nt] -A wait\n"); 825 printf(" ndp -c[nt]\n"); 826 printf(" ndp -d[nt] hostname\n"); 827 printf(" ndp -f[nt] filename\n"); 828 printf(" ndp -i interface [flags...]\n"); 829 #ifdef SIOCSDEFIFACE_IN6 830 printf(" ndp -I [interface|delete]\n"); 831 #endif 832 printf(" ndp -p\n"); 833 printf(" ndp -r\n"); 834 printf(" ndp -s hostname ether_addr [temp] [proxy]\n"); 835 printf(" ndp -H\n"); 836 printf(" ndp -P\n"); 837 printf(" ndp -R\n"); 838 exit(1); 839 } 840 841 int 842 rtmsg(cmd) 843 int cmd; 844 { 845 static int seq; 846 int rlen; 847 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 848 register char *cp = m_rtmsg.m_space; 849 register int l; 850 851 errno = 0; 852 if (cmd == RTM_DELETE) 853 goto doit; 854 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 855 rtm->rtm_flags = flags; 856 rtm->rtm_version = RTM_VERSION; 857 858 switch (cmd) { 859 default: 860 fprintf(stderr, "ndp: internal wrong cmd\n"); 861 exit(1); 862 case RTM_ADD: 863 rtm->rtm_addrs |= RTA_GATEWAY; 864 if (expire_time) { 865 rtm->rtm_rmx.rmx_expire = expire_time; 866 rtm->rtm_inits = RTV_EXPIRE; 867 } 868 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 869 if (rtm->rtm_flags & RTF_ANNOUNCE) { 870 rtm->rtm_flags &= ~RTF_HOST; 871 rtm->rtm_flags |= RTA_NETMASK; 872 } 873 /* FALLTHROUGH */ 874 case RTM_GET: 875 rtm->rtm_addrs |= RTA_DST; 876 } 877 #define NEXTADDR(w, s) \ 878 if (rtm->rtm_addrs & (w)) { \ 879 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 880 881 NEXTADDR(RTA_DST, sin_m); 882 NEXTADDR(RTA_GATEWAY, sdl_m); 883 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 884 NEXTADDR(RTA_NETMASK, so_mask); 885 886 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 887 doit: 888 l = rtm->rtm_msglen; 889 rtm->rtm_seq = ++seq; 890 rtm->rtm_type = cmd; 891 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 892 if (errno != ESRCH || cmd != RTM_DELETE) { 893 err(1, "writing to routing socket"); 894 /* NOTREACHED */ 895 } 896 } 897 do { 898 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 899 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 900 if (l < 0) 901 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 902 strerror(errno)); 903 return (0); 904 } 905 906 void 907 ifinfo(argc, argv) 908 int argc; 909 char **argv; 910 { 911 struct in6_ndireq nd; 912 int i, s; 913 char *ifname = argv[0]; 914 u_int32_t newflags; 915 #ifdef IPV6CTL_USETEMPADDR 916 u_int8_t nullbuf[8]; 917 #endif 918 919 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 920 err(1, "socket"); 921 /* NOTREACHED */ 922 } 923 bzero(&nd, sizeof(nd)); 924 strlcpy(nd.ifname, ifname, sizeof(nd.ifname)); 925 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 926 err(1, "ioctl(SIOCGIFINFO_IN6)"); 927 /* NOTREACHED */ 928 } 929 #define ND nd.ndi 930 newflags = ND.flags; 931 for (i = 1; i < argc; i++) { 932 int clear = 0; 933 char *cp = argv[i]; 934 935 if (*cp == '-') { 936 clear = 1; 937 cp++; 938 } 939 940 #define SETFLAG(s, f) \ 941 do {\ 942 if (strcmp(cp, (s)) == 0) {\ 943 if (clear)\ 944 newflags &= ~(f);\ 945 else\ 946 newflags |= (f);\ 947 }\ 948 } while (0) 949 SETFLAG("nud", ND6_IFF_PERFORMNUD); 950 #ifdef ND6_IFF_ACCEPT_RTADV 951 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 952 #endif 953 #ifdef ND6_IFF_PREFER_SOURCE 954 SETFLAG("prefer_source", ND6_IFF_PREFER_SOURCE); 955 #endif 956 957 ND.flags = newflags; 958 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 959 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 960 /* NOTREACHED */ 961 } 962 #undef SETFLAG 963 } 964 965 if (!ND.initialized) { 966 errx(1, "%s: not initialized yet", ifname); 967 /* NOTREACHED */ 968 } 969 970 printf("linkmtu=%d", ND.linkmtu); 971 printf(", curhlim=%d", ND.chlim); 972 printf(", basereachable=%ds%dms", 973 ND.basereachable / 1000, ND.basereachable % 1000); 974 printf(", reachable=%ds", ND.reachable); 975 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 976 #ifdef IPV6CTL_USETEMPADDR 977 memset(nullbuf, 0, sizeof(nullbuf)); 978 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 979 int j; 980 u_int8_t *rbuf; 981 982 for (i = 0; i < 3; i++) { 983 switch(i) { 984 case 0: 985 printf("\nRandom seed(0): "); 986 rbuf = ND.randomseed0; 987 break; 988 case 1: 989 printf("\nRandom seed(1): "); 990 rbuf = ND.randomseed1; 991 break; 992 case 2: 993 printf("\nRandom ID: "); 994 rbuf = ND.randomid; 995 break; 996 } 997 for (j = 0; j < 8; j++) 998 printf("%02x", rbuf[j]); 999 } 1000 } 1001 #endif 1002 if (ND.flags) { 1003 printf("\nFlags: "); 1004 if ((ND.flags & ND6_IFF_PERFORMNUD)) 1005 printf("PERFORMNUD "); 1006 #ifdef ND6_IFF_ACCEPT_RTADV 1007 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 1008 printf("ACCEPT_RA "); 1009 #endif 1010 #ifdef ND6_IFF_PREFER_SOURCE 1011 if ((ND.flags & ND6_IFF_PREFER_SOURCE)) 1012 printf("PREFER_SRC "); 1013 #endif 1014 } 1015 putc('\n', stdout); 1016 #undef ND 1017 1018 close(s); 1019 } 1020 1021 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 1022 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 1023 #endif 1024 1025 void 1026 rtrlist() 1027 { 1028 #ifdef ICMPV6CTL_ND6_DRLIST 1029 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1030 char *buf; 1031 struct in6_defrouter *p, *ep; 1032 size_t l; 1033 struct timeval time; 1034 1035 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1036 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1037 /*NOTREACHED*/ 1038 } 1039 buf = malloc(l); 1040 if (!buf) { 1041 errx(1, "not enough core"); 1042 /*NOTREACHED*/ 1043 } 1044 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1045 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1046 /*NOTREACHED*/ 1047 } 1048 1049 ep = (struct in6_defrouter *)(buf + l); 1050 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1051 int rtpref; 1052 1053 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1054 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1055 (nflag ? NI_NUMERICHOST : 0)) != 0) 1056 strlcpy(host_buf, "?", sizeof(host_buf)); 1057 1058 printf("%s if=%s", host_buf, 1059 if_indextoname(p->if_index, ifix_buf)); 1060 printf(", flags=%s%s", 1061 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1062 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1063 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1064 printf(", pref=%s", rtpref_str[rtpref]); 1065 1066 gettimeofday(&time, 0); 1067 if (p->expire == 0) 1068 printf(", expire=Never\n"); 1069 else 1070 printf(", expire=%s\n", 1071 sec2str(p->expire - time.tv_sec)); 1072 } 1073 free(buf); 1074 #else 1075 struct in6_drlist dr; 1076 int s, i; 1077 struct timeval time; 1078 1079 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1080 err(1, "socket"); 1081 /* NOTREACHED */ 1082 } 1083 bzero(&dr, sizeof(dr)); 1084 strlcpy(dr.ifname, "lo0", sizeof(dr.ifname)); /* dummy */ 1085 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1086 err(1, "ioctl(SIOCGDRLST_IN6)"); 1087 /* NOTREACHED */ 1088 } 1089 #define DR dr.defrouter[i] 1090 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1091 struct sockaddr_in6 sin6; 1092 1093 bzero(&sin6, sizeof(sin6)); 1094 sin6.sin6_family = AF_INET6; 1095 sin6.sin6_len = sizeof(sin6); 1096 sin6.sin6_addr = DR.rtaddr; 1097 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1098 sizeof(host_buf), NULL, 0, 1099 (nflag ? NI_NUMERICHOST : 0)); 1100 1101 printf("%s if=%s", host_buf, 1102 if_indextoname(DR.if_index, ifix_buf)); 1103 printf(", flags=%s%s", 1104 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1105 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1106 gettimeofday(&time, 0); 1107 if (DR.expire == 0) 1108 printf(", expire=Never\n"); 1109 else 1110 printf(", expire=%s\n", 1111 sec2str(DR.expire - time.tv_sec)); 1112 } 1113 #undef DR 1114 close(s); 1115 #endif 1116 } 1117 1118 void 1119 plist() 1120 { 1121 #ifdef ICMPV6CTL_ND6_PRLIST 1122 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1123 char *buf; 1124 struct in6_prefix *p, *ep, *n; 1125 struct sockaddr_in6 *advrtr; 1126 size_t l; 1127 struct timeval time; 1128 const int niflags = NI_NUMERICHOST; 1129 int ninflags = nflag ? NI_NUMERICHOST : 0; 1130 char namebuf[NI_MAXHOST]; 1131 1132 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1133 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1134 /*NOTREACHED*/ 1135 } 1136 buf = malloc(l); 1137 if (!buf) { 1138 errx(1, "not enough core"); 1139 /*NOTREACHED*/ 1140 } 1141 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1142 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1143 /*NOTREACHED*/ 1144 } 1145 1146 ep = (struct in6_prefix *)(buf + l); 1147 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1148 advrtr = (struct sockaddr_in6 *)(p + 1); 1149 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1150 1151 if (getnameinfo((struct sockaddr *)&p->prefix, 1152 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1153 NULL, 0, niflags) != 0) 1154 strlcpy(namebuf, "?", sizeof(namebuf)); 1155 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1156 if_indextoname(p->if_index, ifix_buf)); 1157 1158 gettimeofday(&time, 0); 1159 /* 1160 * meaning of fields, especially flags, is very different 1161 * by origin. notify the difference to the users. 1162 */ 1163 printf("flags=%s%s%s%s%s", 1164 p->raflags.onlink ? "L" : "", 1165 p->raflags.autonomous ? "A" : "", 1166 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1167 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1168 #ifdef NDPRF_HOME 1169 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1170 #else 1171 "" 1172 #endif 1173 ); 1174 if (p->vltime == ND6_INFINITE_LIFETIME) 1175 printf(" vltime=infinity"); 1176 else 1177 printf(" vltime=%lu", (unsigned long)p->vltime); 1178 if (p->pltime == ND6_INFINITE_LIFETIME) 1179 printf(", pltime=infinity"); 1180 else 1181 printf(", pltime=%lu", (unsigned long)p->pltime); 1182 if (p->expire == 0) 1183 printf(", expire=Never"); 1184 else if (p->expire >= time.tv_sec) 1185 printf(", expire=%s", 1186 sec2str(p->expire - time.tv_sec)); 1187 else 1188 printf(", expired"); 1189 printf(", ref=%d", p->refcnt); 1190 printf("\n"); 1191 /* 1192 * "advertising router" list is meaningful only if the prefix 1193 * information is from RA. 1194 */ 1195 if (p->advrtrs) { 1196 int j; 1197 struct sockaddr_in6 *sin6; 1198 1199 sin6 = advrtr; 1200 printf(" advertised by\n"); 1201 for (j = 0; j < p->advrtrs; j++) { 1202 struct in6_nbrinfo *nbi; 1203 1204 if (getnameinfo((struct sockaddr *)sin6, 1205 sin6->sin6_len, namebuf, sizeof(namebuf), 1206 NULL, 0, ninflags) != 0) 1207 strlcpy(namebuf, "?", sizeof(namebuf)); 1208 printf(" %s", namebuf); 1209 1210 nbi = getnbrinfo(&sin6->sin6_addr, p->if_index, 1211 0); 1212 if (nbi) { 1213 switch(nbi->state) { 1214 case ND6_LLINFO_REACHABLE: 1215 case ND6_LLINFO_STALE: 1216 case ND6_LLINFO_DELAY: 1217 case ND6_LLINFO_PROBE: 1218 printf(" (reachable)\n"); 1219 break; 1220 default: 1221 printf(" (unreachable)\n"); 1222 } 1223 } else 1224 printf(" (no neighbor state)\n"); 1225 sin6++; 1226 } 1227 } else 1228 printf(" No advertising router\n"); 1229 } 1230 free(buf); 1231 #else 1232 struct in6_prlist pr; 1233 int s, i; 1234 struct timeval time; 1235 1236 gettimeofday(&time, 0); 1237 1238 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1239 err(1, "socket"); 1240 /* NOTREACHED */ 1241 } 1242 bzero(&pr, sizeof(pr)); 1243 strlcpy(pr.ifname, "lo0", sizeof(pr.ifname)); /* dummy */ 1244 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1245 err(1, "ioctl(SIOCGPRLST_IN6)"); 1246 /* NOTREACHED */ 1247 } 1248 #define PR pr.prefix[i] 1249 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1250 struct sockaddr_in6 p6; 1251 char namebuf[NI_MAXHOST]; 1252 int niflags; 1253 1254 #ifdef NDPRF_ONLINK 1255 p6 = PR.prefix; 1256 #else 1257 memset(&p6, 0, sizeof(p6)); 1258 p6.sin6_family = AF_INET6; 1259 p6.sin6_len = sizeof(p6); 1260 p6.sin6_addr = PR.prefix; 1261 #endif 1262 1263 /* 1264 * copy link index to sin6_scope_id field. 1265 * XXX: KAME specific. 1266 */ 1267 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1268 u_int16_t linkid; 1269 1270 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1271 sizeof(linkid)); 1272 linkid = ntohs(linkid); 1273 p6.sin6_scope_id = linkid; 1274 p6.sin6_addr.s6_addr[2] = 0; 1275 p6.sin6_addr.s6_addr[3] = 0; 1276 } 1277 1278 niflags = NI_NUMERICHOST; 1279 if (getnameinfo((struct sockaddr *)&p6, 1280 sizeof(p6), namebuf, sizeof(namebuf), 1281 NULL, 0, niflags)) { 1282 warnx("getnameinfo failed"); 1283 continue; 1284 } 1285 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1286 if_indextoname(PR.if_index, ifix_buf)); 1287 1288 gettimeofday(&time, 0); 1289 /* 1290 * meaning of fields, especially flags, is very different 1291 * by origin. notify the difference to the users. 1292 */ 1293 #if 0 1294 printf(" %s", 1295 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1296 #endif 1297 #ifdef NDPRF_ONLINK 1298 printf("flags=%s%s%s%s%s", 1299 PR.raflags.onlink ? "L" : "", 1300 PR.raflags.autonomous ? "A" : "", 1301 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1302 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1303 #ifdef NDPRF_HOME 1304 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1305 #else 1306 "" 1307 #endif 1308 ); 1309 #else 1310 printf("flags=%s%s", 1311 PR.raflags.onlink ? "L" : "", 1312 PR.raflags.autonomous ? "A" : ""); 1313 #endif 1314 if (PR.vltime == ND6_INFINITE_LIFETIME) 1315 printf(" vltime=infinity"); 1316 else 1317 printf(" vltime=%lu", PR.vltime); 1318 if (PR.pltime == ND6_INFINITE_LIFETIME) 1319 printf(", pltime=infinity"); 1320 else 1321 printf(", pltime=%lu", PR.pltime); 1322 if (PR.expire == 0) 1323 printf(", expire=Never"); 1324 else if (PR.expire >= time.tv_sec) 1325 printf(", expire=%s", 1326 sec2str(PR.expire - time.tv_sec)); 1327 else 1328 printf(", expired"); 1329 #ifdef NDPRF_ONLINK 1330 printf(", ref=%d", PR.refcnt); 1331 #endif 1332 #if 0 1333 switch (PR.origin) { 1334 case PR_ORIG_RA: 1335 printf(", origin=RA"); 1336 break; 1337 case PR_ORIG_RR: 1338 printf(", origin=RR"); 1339 break; 1340 case PR_ORIG_STATIC: 1341 printf(", origin=static"); 1342 break; 1343 case PR_ORIG_KERNEL: 1344 printf(", origin=kernel"); 1345 break; 1346 default: 1347 printf(", origin=?"); 1348 break; 1349 } 1350 #endif 1351 printf("\n"); 1352 /* 1353 * "advertising router" list is meaningful only if the prefix 1354 * information is from RA. 1355 */ 1356 if (0 && /* prefix origin is almost obsolted */ 1357 PR.origin != PR_ORIG_RA) 1358 ; 1359 else if (PR.advrtrs) { 1360 int j; 1361 printf(" advertised by\n"); 1362 for (j = 0; j < PR.advrtrs; j++) { 1363 struct sockaddr_in6 sin6; 1364 struct in6_nbrinfo *nbi; 1365 1366 bzero(&sin6, sizeof(sin6)); 1367 sin6.sin6_family = AF_INET6; 1368 sin6.sin6_len = sizeof(sin6); 1369 sin6.sin6_addr = PR.advrtr[j]; 1370 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1371 getnameinfo((struct sockaddr *)&sin6, 1372 sin6.sin6_len, host_buf, 1373 sizeof(host_buf), NULL, 0, 1374 (nflag ? NI_NUMERICHOST : 0)); 1375 printf(" %s", host_buf); 1376 1377 nbi = getnbrinfo(&sin6.sin6_addr, PR.if_index, 1378 0); 1379 if (nbi) { 1380 switch(nbi->state) { 1381 case ND6_LLINFO_REACHABLE: 1382 case ND6_LLINFO_STALE: 1383 case ND6_LLINFO_DELAY: 1384 case ND6_LLINFO_PROBE: 1385 printf(" (reachable)\n"); 1386 break; 1387 default: 1388 printf(" (unreachable)\n"); 1389 } 1390 } else 1391 printf(" (no neighbor state)\n"); 1392 } 1393 if (PR.advrtrs > DRLSTSIZ) 1394 printf(" and %d routers\n", 1395 PR.advrtrs - DRLSTSIZ); 1396 } else 1397 printf(" No advertising router\n"); 1398 } 1399 #undef PR 1400 close(s); 1401 #endif 1402 } 1403 1404 void 1405 pfx_flush() 1406 { 1407 char dummyif[IFNAMSIZ+8]; 1408 int s; 1409 1410 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1411 err(1, "socket"); 1412 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1413 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1414 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1415 } 1416 1417 void 1418 rtr_flush() 1419 { 1420 char dummyif[IFNAMSIZ+8]; 1421 int s; 1422 1423 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1424 err(1, "socket"); 1425 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1426 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1427 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1428 1429 close(s); 1430 } 1431 1432 void 1433 harmonize_rtr() 1434 { 1435 char dummyif[IFNAMSIZ+8]; 1436 int s; 1437 1438 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1439 err(1, "socket"); 1440 strlcpy(dummyif, "lo0", sizeof(dummyif)); /* dummy */ 1441 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1442 err(1, "ioctl(SIOCSNDFLUSH_IN6)"); 1443 1444 close(s); 1445 } 1446 1447 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1448 static void 1449 setdefif(ifname) 1450 char *ifname; 1451 { 1452 struct in6_ndifreq ndifreq; 1453 unsigned int ifindex; 1454 1455 if (strcasecmp(ifname, "delete") == 0) 1456 ifindex = 0; 1457 else { 1458 if ((ifindex = if_nametoindex(ifname)) == 0) 1459 err(1, "failed to resolve i/f index for %s", ifname); 1460 } 1461 1462 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1463 err(1, "socket"); 1464 1465 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1466 ndifreq.ifindex = ifindex; 1467 1468 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1469 err(1, "ioctl(SIOCSDEFIFACE_IN6)"); 1470 1471 close(s); 1472 } 1473 1474 static void 1475 getdefif() 1476 { 1477 struct in6_ndifreq ndifreq; 1478 char ifname[IFNAMSIZ+8]; 1479 1480 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1481 err(1, "socket"); 1482 1483 memset(&ndifreq, 0, sizeof(ndifreq)); 1484 strlcpy(ndifreq.ifname, "lo0", sizeof(ndifreq.ifname)); /* dummy */ 1485 1486 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1487 err(1, "ioctl(SIOCGDEFIFACE_IN6)"); 1488 1489 if (ndifreq.ifindex == 0) 1490 printf("No default interface.\n"); 1491 else { 1492 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1493 err(1, "failed to resolve ifname for index %lu", 1494 ndifreq.ifindex); 1495 printf("ND default interface = %s\n", ifname); 1496 } 1497 1498 close(s); 1499 } 1500 #endif 1501 1502 static char * 1503 sec2str(total) 1504 time_t total; 1505 { 1506 static char result[256]; 1507 int days, hours, mins, secs; 1508 int first = 1; 1509 char *p = result; 1510 char *ep = &result[sizeof(result)]; 1511 int n; 1512 1513 days = total / 3600 / 24; 1514 hours = (total / 3600) % 24; 1515 mins = (total / 60) % 60; 1516 secs = total % 60; 1517 1518 if (days) { 1519 first = 0; 1520 n = snprintf(p, ep - p, "%dd", days); 1521 if (n < 0 || n >= ep - p) 1522 return "?"; 1523 p += n; 1524 } 1525 if (!first || hours) { 1526 first = 0; 1527 n = snprintf(p, ep - p, "%dh", hours); 1528 if (n < 0 || n >= ep - p) 1529 return "?"; 1530 p += n; 1531 } 1532 if (!first || mins) { 1533 first = 0; 1534 n = snprintf(p, ep - p, "%dm", mins); 1535 if (n < 0 || n >= ep - p) 1536 return "?"; 1537 p += n; 1538 } 1539 snprintf(p, ep - p, "%ds", secs); 1540 1541 return(result); 1542 } 1543 1544 /* 1545 * Print the timestamp 1546 * from tcpdump/util.c 1547 */ 1548 static void 1549 ts_print(tvp) 1550 const struct timeval *tvp; 1551 { 1552 int s; 1553 1554 /* Default */ 1555 s = (tvp->tv_sec + thiszone) % 86400; 1556 (void)printf("%02d:%02d:%02d.%06u ", 1557 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1558 } 1559
Indexes created Mon Sep 29 18:09:42 GMT 2025