ndp.c revision 1.16
1 /* $NetBSD: ndp.c,v 1.16 2001/07/23 14:47:43 itojun Exp $ */ 2 /* $KAME: ndp.c,v 1.69 2001/07/23 14:46:31 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 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 91 #include <net/if_var.h> 92 #endif /* __FreeBSD__ >= 3 */ 93 #include <net/if_dl.h> 94 #include <net/if_types.h> 95 #include <net/route.h> 96 97 #include <netinet/in.h> 98 #ifndef __NetBSD__ 99 #include <netinet/if_ether.h> 100 #endif 101 102 #include <netinet/icmp6.h> 103 #include <netinet6/in6_var.h> 104 #include <netinet6/nd6.h> 105 106 #include <arpa/inet.h> 107 108 #include <netdb.h> 109 #include <errno.h> 110 #include <nlist.h> 111 #include <stdio.h> 112 #include <string.h> 113 #include <paths.h> 114 #include <err.h> 115 #include <stdlib.h> 116 #include <fcntl.h> 117 #include <unistd.h> 118 #include <err.h> 119 #include "gmt2local.h" 120 121 #ifndef NI_WITHSCOPEID 122 #define NI_WITHSCOPEID 0 123 #endif 124 125 /* packing rule for routing socket */ 126 #define ROUNDUP(a) \ 127 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 128 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 129 130 static int pid; 131 static int cflag; 132 static int nflag; 133 static int tflag; 134 static int32_t thiszone; /* time difference with gmt */ 135 static int s = -1; 136 static int repeat = 0; 137 138 char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 139 char host_buf[NI_MAXHOST]; /* getnameinfo() */ 140 char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 141 142 int main __P((int, char **)); 143 int file __P((char *)); 144 void getsocket __P((void)); 145 int set __P((int, char **)); 146 void get __P((char *)); 147 int delete __P((char *)); 148 void dump __P((struct in6_addr *)); 149 static struct in6_nbrinfo *getnbrinfo __P((struct in6_addr *addr, 150 int ifindex, int)); 151 static char *ether_str __P((struct sockaddr_dl *)); 152 int ndp_ether_aton __P((char *, u_char *)); 153 void usage __P((void)); 154 int rtmsg __P((int)); 155 void ifinfo __P((int, char **)); 156 void rtrlist __P((void)); 157 void plist __P((void)); 158 void pfx_flush __P((void)); 159 void rtrlist __P((void)); 160 void rtr_flush __P((void)); 161 void harmonize_rtr __P((void)); 162 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 163 static void getdefif __P((void)); 164 static void setdefif __P((char *)); 165 #endif 166 static char *sec2str __P((time_t t)); 167 static char *ether_str __P((struct sockaddr_dl *sdl)); 168 static void ts_print __P((const struct timeval *)); 169 170 #ifdef ICMPV6CTL_ND6_DRLIST 171 static char *rtpref_str[] = { 172 "medium", /* 00 */ 173 "high", /* 01 */ 174 "rsv", /* 10 */ 175 "low" /* 11 */ 176 }; 177 #endif 178 179 int 180 main(argc, argv) 181 int argc; 182 char **argv; 183 { 184 int ch; 185 int aflag = 0, dflag = 0, sflag = 0, Hflag = 0, 186 pflag = 0, rflag = 0, Pflag = 0, Rflag = 0; 187 188 pid = getpid(); 189 thiszone = gmt2local(0); 190 while ((ch = getopt(argc, argv, "acndfIilprstA:HPR")) != -1) 191 switch ((char)ch) { 192 case 'a': 193 aflag = 1; 194 break; 195 case 'c': 196 cflag = 1; 197 break; 198 case 'd': 199 dflag = 1; 200 break; 201 case 'I': 202 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 203 if (argc > 2) 204 setdefif(argv[2]); 205 getdefif(); /* always call it to print the result */ 206 exit(0); 207 #else 208 errx(1, "not supported yet"); 209 /*NOTREACHED*/ 210 #endif 211 case 'i' : 212 argc -= optind; 213 argv += optind; 214 if (argc < 1) 215 usage(); 216 ifinfo(argc, argv); 217 exit(0); 218 case 'n': 219 nflag = 1; 220 continue; 221 case 'p': 222 pflag = 1; 223 break; 224 case 'f' : 225 if (argc != 3) 226 usage(); 227 file(argv[2]); 228 exit(0); 229 case 'l' : 230 /* obsolete, ignored */ 231 break; 232 case 'r' : 233 rflag = 1; 234 break; 235 case 's': 236 sflag = 1; 237 break; 238 case 't': 239 tflag = 1; 240 break; 241 case 'A': 242 aflag = 1; 243 repeat = atoi(optarg); 244 if (repeat < 0) 245 usage(); 246 break; 247 case 'H' : 248 Hflag = 1; 249 break; 250 case 'P': 251 Pflag = 1; 252 break; 253 case 'R': 254 Rflag = 1; 255 break; 256 default: 257 usage(); 258 } 259 260 argc -= optind; 261 argv += optind; 262 263 if (aflag || cflag) { 264 dump(0); 265 exit(0); 266 } 267 if (dflag) { 268 if (argc != 1) 269 usage(); 270 delete(argv[0]); 271 exit(0); 272 } 273 if (pflag) { 274 plist(); 275 exit(0); 276 } 277 if (rflag) { 278 rtrlist(); 279 exit(0); 280 } 281 if (sflag) { 282 if (argc < 2 || argc > 4) 283 usage(); 284 exit(set(argc, argv) ? 1 : 0); 285 } 286 if (Hflag) { 287 harmonize_rtr(); 288 exit(0); 289 } 290 if (Pflag) { 291 pfx_flush(); 292 exit(0); 293 } 294 if (Rflag) { 295 rtr_flush(); 296 exit(0); 297 } 298 299 if (argc != 1) 300 usage(); 301 get(argv[0]); 302 exit(0); 303 } 304 305 /* 306 * Process a file to set standard ndp entries 307 */ 308 int 309 file(name) 310 char *name; 311 { 312 FILE *fp; 313 int i, retval; 314 char line[100], arg[5][50], *args[5]; 315 316 if ((fp = fopen(name, "r")) == NULL) { 317 fprintf(stderr, "ndp: cannot open %s\n", name); 318 exit(1); 319 } 320 args[0] = &arg[0][0]; 321 args[1] = &arg[1][0]; 322 args[2] = &arg[2][0]; 323 args[3] = &arg[3][0]; 324 args[4] = &arg[4][0]; 325 retval = 0; 326 while(fgets(line, 100, fp) != NULL) { 327 i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2], 328 arg[3], arg[4]); 329 if (i < 2) { 330 fprintf(stderr, "ndp: bad line: %s\n", line); 331 retval = 1; 332 continue; 333 } 334 if (set(i, args)) 335 retval = 1; 336 } 337 fclose(fp); 338 return (retval); 339 } 340 341 void 342 getsocket() 343 { 344 if (s < 0) { 345 s = socket(PF_ROUTE, SOCK_RAW, 0); 346 if (s < 0) { 347 err(1, "ndp: socket"); 348 /* NOTREACHED */ 349 } 350 } 351 } 352 353 struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 354 struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 355 struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 356 int expire_time, flags, found_entry; 357 struct { 358 struct rt_msghdr m_rtm; 359 char m_space[512]; 360 } m_rtmsg; 361 362 /* 363 * Set an individual neighbor cache entry 364 */ 365 int 366 set(argc, argv) 367 int argc; 368 char **argv; 369 { 370 register struct sockaddr_in6 *sin = &sin_m; 371 register struct sockaddr_dl *sdl; 372 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 373 struct addrinfo hints, *res; 374 int gai_error; 375 u_char *ea; 376 char *host = argv[0], *eaddr = argv[1]; 377 378 getsocket(); 379 argc -= 2; 380 argv += 2; 381 sdl_m = blank_sdl; 382 sin_m = blank_sin; 383 384 bzero(&hints, sizeof(hints)); 385 hints.ai_family = AF_INET6; 386 gai_error = getaddrinfo(host, NULL, &hints, &res); 387 if (gai_error) { 388 fprintf(stderr, "ndp: %s: %s\n", host, 389 gai_strerror(gai_error)); 390 return 1; 391 } 392 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 393 #ifdef __KAME__ 394 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 395 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 396 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 397 } 398 #endif 399 ea = (u_char *)LLADDR(&sdl_m); 400 if (ndp_ether_aton(eaddr, ea) == 0) 401 sdl_m.sdl_alen = 6; 402 flags = expire_time = 0; 403 while (argc-- > 0) { 404 if (strncmp(argv[0], "temp", 4) == 0) { 405 struct timeval time; 406 gettimeofday(&time, 0); 407 expire_time = time.tv_sec + 20 * 60; 408 } else if (strncmp(argv[0], "proxy", 5) == 0) 409 flags |= RTF_ANNOUNCE; 410 argv++; 411 } 412 if (rtmsg(RTM_GET) < 0) { 413 errx(1, "RTM_GET(%s) failed", host); 414 /* NOTREACHED */ 415 } 416 sin = (struct sockaddr_in6 *)(rtm + 1); 417 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 418 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 419 if (sdl->sdl_family == AF_LINK && 420 (rtm->rtm_flags & RTF_LLINFO) && 421 !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) { 422 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 423 case IFT_ISO88024: case IFT_ISO88025: 424 goto overwrite; 425 } 426 /* 427 * IPv4 arp command retries with sin_other = SIN_PROXY here. 428 */ 429 fprintf(stderr, "set: cannot configure a new entry\n"); 430 return 1; 431 } 432 433 overwrite: 434 if (sdl->sdl_family != AF_LINK) { 435 printf("cannot intuit interface index and type for %s\n", host); 436 return (1); 437 } 438 sdl_m.sdl_type = sdl->sdl_type; 439 sdl_m.sdl_index = sdl->sdl_index; 440 return (rtmsg(RTM_ADD)); 441 } 442 443 /* 444 * Display an individual neighbor cache entry 445 */ 446 void 447 get(host) 448 char *host; 449 { 450 struct sockaddr_in6 *sin = &sin_m; 451 struct addrinfo hints, *res; 452 int gai_error; 453 454 sin_m = blank_sin; 455 bzero(&hints, sizeof(hints)); 456 hints.ai_family = AF_INET6; 457 gai_error = getaddrinfo(host, NULL, &hints, &res); 458 if (gai_error) { 459 fprintf(stderr, "ndp: %s: %s\n", host, 460 gai_strerror(gai_error)); 461 return; 462 } 463 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 464 #ifdef __KAME__ 465 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 466 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 467 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 468 } 469 #endif 470 dump(&sin->sin6_addr); 471 if (found_entry == 0) { 472 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 473 sizeof(host_buf), NULL ,0, 474 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 475 printf("%s (%s) -- no entry\n", host, host_buf); 476 exit(1); 477 } 478 } 479 480 /* 481 * Delete a neighbor cache entry 482 */ 483 int 484 delete(host) 485 char *host; 486 { 487 struct sockaddr_in6 *sin = &sin_m; 488 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 489 struct sockaddr_dl *sdl; 490 struct addrinfo hints, *res; 491 int gai_error; 492 493 getsocket(); 494 sin_m = blank_sin; 495 496 bzero(&hints, sizeof(hints)); 497 hints.ai_family = AF_INET6; 498 gai_error = getaddrinfo(host, NULL, &hints, &res); 499 if (gai_error) { 500 fprintf(stderr, "ndp: %s: %s\n", host, 501 gai_strerror(gai_error)); 502 return 1; 503 } 504 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 505 #ifdef __KAME__ 506 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 507 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 508 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 509 } 510 #endif 511 if (rtmsg(RTM_GET) < 0) { 512 errx(1, "RTM_GET(%s) failed", host); 513 /* NOTREACHED */ 514 } 515 sin = (struct sockaddr_in6 *)(rtm + 1); 516 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 517 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 518 if (sdl->sdl_family == AF_LINK && 519 (rtm->rtm_flags & RTF_LLINFO) && 520 !(rtm->rtm_flags & RTF_GATEWAY)) { 521 goto delete; 522 } 523 /* 524 * IPv4 arp command retries with sin_other = SIN_PROXY here. 525 */ 526 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 527 return 1; 528 } 529 530 delete: 531 if (sdl->sdl_family != AF_LINK) { 532 printf("cannot locate %s\n", host); 533 return (1); 534 } 535 if (rtmsg(RTM_DELETE) == 0) { 536 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 537 538 #ifdef __KAME__ 539 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 540 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 541 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 542 } 543 #endif 544 getnameinfo((struct sockaddr *)&s6, 545 s6.sin6_len, host_buf, 546 sizeof(host_buf), NULL, 0, 547 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 548 printf("%s (%s) deleted\n", host, host_buf); 549 } 550 551 return 0; 552 } 553 554 #define W_ADDR 31 555 #define W_LL 17 556 #define W_IF 6 557 558 /* 559 * Dump the entire neighbor cache 560 */ 561 void 562 dump(addr) 563 struct in6_addr *addr; 564 { 565 int mib[6]; 566 size_t needed; 567 char *lim, *buf, *next; 568 struct rt_msghdr *rtm; 569 struct sockaddr_in6 *sin; 570 struct sockaddr_dl *sdl; 571 extern int h_errno; 572 struct in6_nbrinfo *nbi; 573 struct timeval time; 574 int addrwidth; 575 int llwidth; 576 int ifwidth; 577 char flgbuf[8]; 578 char *ifname; 579 580 /* Print header */ 581 if (!tflag && !cflag) 582 printf("%-*.*s %-*.*s %*.*s %-9.9s %2s %4s %4s\n", 583 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 584 W_IF, W_IF, "Netif", "Expire", "St", "Flgs", "Prbs"); 585 586 again:; 587 mib[0] = CTL_NET; 588 mib[1] = PF_ROUTE; 589 mib[2] = 0; 590 mib[3] = AF_INET6; 591 mib[4] = NET_RT_FLAGS; 592 mib[5] = RTF_LLINFO; 593 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 594 err(1, "sysctl(PF_ROUTE estimate)"); 595 if (needed > 0) { 596 if ((buf = malloc(needed)) == NULL) 597 errx(1, "malloc"); 598 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 599 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 600 lim = buf + needed; 601 } else 602 buf = lim = NULL; 603 604 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 605 int isrouter = 0, prbs = 0; 606 607 rtm = (struct rt_msghdr *)next; 608 sin = (struct sockaddr_in6 *)(rtm + 1); 609 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 610 611 /* 612 * Some OSes can produce a route that has the LINK flag but 613 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 614 * and BSD/OS, where xx is not the interface identifier on 615 * lo0). Such routes entry would annoy getnbrinfo() below, 616 * so we skip them. 617 * XXX: such routes should have the GATEWAY flag, not the 618 * LINK flag. However, there is rotten routing software 619 * that advertises all routes that have the GATEWAY flag. 620 * Thus, KAME kernel intentionally does not set the LINK flag. 621 * What is to be fixed is not ndp, but such routing software 622 * (and the kernel workaround)... 623 */ 624 if (sdl->sdl_family != AF_LINK) 625 continue; 626 627 if (addr) { 628 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 629 continue; 630 found_entry = 1; 631 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 632 continue; 633 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 634 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 635 /* XXX: should scope id be filled in the kernel? */ 636 if (sin->sin6_scope_id == 0) 637 sin->sin6_scope_id = sdl->sdl_index; 638 #ifdef __KAME__ 639 /* KAME specific hack; removed the embedded id */ 640 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 641 #endif 642 } 643 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 644 sizeof(host_buf), NULL, 0, 645 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 646 if (cflag == 1) { 647 delete(host_buf); 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 putchar(' '); 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 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 729 isrouter ? "R" : "", 730 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) 731 ? "P" : "", 732 (sin->sin6_len != sizeof(struct sockaddr_in6)) 733 ? "W" : "", 734 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 735 } 736 printf(" %-4.4s", flgbuf); 737 738 if (prbs) 739 printf(" %4d", prbs); 740 741 printf("\n"); 742 } 743 if (buf != NULL) 744 free(buf); 745 746 if (repeat) { 747 printf("\n"); 748 sleep(repeat); 749 goto again; 750 } 751 } 752 753 static struct in6_nbrinfo * 754 getnbrinfo(addr, ifindex, warning) 755 struct in6_addr *addr; 756 int ifindex; 757 int warning; 758 { 759 static struct in6_nbrinfo nbi; 760 int s; 761 762 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 763 err(1, "socket"); 764 765 bzero(&nbi, sizeof(nbi)); 766 if_indextoname(ifindex, nbi.ifname); 767 nbi.addr = *addr; 768 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 769 if (warning) 770 warn("ioctl(SIOCGNBRINFO_IN6)"); 771 close(s); 772 return(NULL); 773 } 774 775 close(s); 776 return(&nbi); 777 } 778 779 static char * 780 ether_str(sdl) 781 struct sockaddr_dl *sdl; 782 { 783 static char ebuf[32]; 784 u_char *cp; 785 786 if (sdl->sdl_alen) { 787 cp = (u_char *)LLADDR(sdl); 788 sprintf(ebuf, "%x:%x:%x:%x:%x:%x", 789 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 790 } else { 791 sprintf(ebuf, "(incomplete)"); 792 } 793 794 return(ebuf); 795 } 796 797 int 798 ndp_ether_aton(a, n) 799 char *a; 800 u_char *n; 801 { 802 int i, o[6]; 803 804 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 805 &o[3], &o[4], &o[5]); 806 if (i != 6) { 807 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 808 return (1); 809 } 810 for (i=0; i<6; i++) 811 n[i] = o[i]; 812 return (0); 813 } 814 815 void 816 usage() 817 { 818 printf("usage: ndp hostname\n"); 819 printf(" ndp -a[nt]\n"); 820 printf(" ndp [-nt] -A wait\n"); 821 printf(" ndp -c[nt]\n"); 822 printf(" ndp -d[nt] hostname\n"); 823 printf(" ndp -f[nt] filename\n"); 824 printf(" ndp -i interface [flags...]\n"); 825 #ifdef SIOCSDEFIFACE_IN6 826 printf(" ndp -I [interface|delete]\n"); 827 #endif 828 printf(" ndp -p\n"); 829 printf(" ndp -r\n"); 830 printf(" ndp -s hostname ether_addr [temp] [proxy]\n"); 831 printf(" ndp -H\n"); 832 printf(" ndp -P\n"); 833 printf(" ndp -R\n"); 834 exit(1); 835 } 836 837 int 838 rtmsg(cmd) 839 int cmd; 840 { 841 static int seq; 842 int rlen; 843 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 844 register char *cp = m_rtmsg.m_space; 845 register int l; 846 847 errno = 0; 848 if (cmd == RTM_DELETE) 849 goto doit; 850 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 851 rtm->rtm_flags = flags; 852 rtm->rtm_version = RTM_VERSION; 853 854 switch (cmd) { 855 default: 856 fprintf(stderr, "ndp: internal wrong cmd\n"); 857 exit(1); 858 case RTM_ADD: 859 rtm->rtm_addrs |= RTA_GATEWAY; 860 rtm->rtm_rmx.rmx_expire = expire_time; 861 rtm->rtm_inits = RTV_EXPIRE; 862 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 863 if (rtm->rtm_flags & RTF_ANNOUNCE) { 864 rtm->rtm_flags &= ~RTF_HOST; 865 rtm->rtm_flags |= RTA_NETMASK; 866 } 867 /* FALLTHROUGH */ 868 case RTM_GET: 869 rtm->rtm_addrs |= RTA_DST; 870 } 871 #define NEXTADDR(w, s) \ 872 if (rtm->rtm_addrs & (w)) { \ 873 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 874 875 NEXTADDR(RTA_DST, sin_m); 876 NEXTADDR(RTA_GATEWAY, sdl_m); 877 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 878 NEXTADDR(RTA_NETMASK, so_mask); 879 880 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 881 doit: 882 l = rtm->rtm_msglen; 883 rtm->rtm_seq = ++seq; 884 rtm->rtm_type = cmd; 885 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 886 if (errno != ESRCH || cmd != RTM_DELETE) { 887 err(1, "writing to routing socket"); 888 /* NOTREACHED */ 889 } 890 } 891 do { 892 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 893 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 894 if (l < 0) 895 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 896 strerror(errno)); 897 return (0); 898 } 899 900 void 901 ifinfo(argc, argv) 902 int argc; 903 char **argv; 904 { 905 struct in6_ndireq nd; 906 int i, s; 907 char *ifname = argv[0]; 908 u_int32_t newflags; 909 #ifdef IPV6CTL_USETEMPADDR 910 u_int8_t nullbuf[8]; 911 #endif 912 913 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 914 err(1, "socket"); 915 /* NOTREACHED */ 916 } 917 bzero(&nd, sizeof(nd)); 918 strcpy(nd.ifname, ifname); 919 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 920 err(1, "ioctl(SIOCGIFINFO_IN6)"); 921 /* NOTREACHED */ 922 } 923 #define ND nd.ndi 924 newflags = ND.flags; 925 for (i = 1; i < argc; i++) { 926 int clear = 0; 927 char *cp = argv[i]; 928 929 if (*cp == '-') { 930 clear = 1; 931 cp++; 932 } 933 934 #define SETFLAG(s, f) \ 935 do {\ 936 if (strcmp(cp, (s)) == 0) {\ 937 if (clear)\ 938 newflags &= ~(f);\ 939 else\ 940 newflags |= (f);\ 941 }\ 942 } while (0) 943 SETFLAG("nud", ND6_IFF_PERFORMNUD); 944 945 ND.flags = newflags; 946 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 947 err(1, "ioctl(SIOCSIFINFO_FLAGS)"); 948 /* NOTREACHED */ 949 } 950 #undef SETFLAG 951 } 952 953 if (!ND.linkmtu) { 954 errx(1, "%s: not initialized yet", ifname); 955 /* NOTREACHED */ 956 } 957 958 printf("linkmtu=%d", ND.linkmtu); 959 printf(", curhlim=%d", ND.chlim); 960 printf(", basereachable=%ds%dms", 961 ND.basereachable / 1000, ND.basereachable % 1000); 962 printf(", reachable=%ds", ND.reachable); 963 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 964 #ifdef IPV6CTL_USETEMPADDR 965 memset(nullbuf, 0, sizeof(nullbuf)); 966 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 967 int j; 968 u_int8_t *rbuf; 969 970 for (i = 0; i < 3; i++) { 971 switch(i) { 972 case 0: 973 printf("\nRandom seed(0): "); 974 rbuf = ND.randomseed0; 975 break; 976 case 1: 977 printf("\nRandom seed(1): "); 978 rbuf = ND.randomseed1; 979 break; 980 case 2: 981 printf("\nRandom ID: "); 982 rbuf = ND.randomid; 983 break; 984 } 985 for (j = 0; j < 8; j++) 986 printf("%02x", rbuf[j]); 987 } 988 } 989 #endif 990 if (ND.flags) { 991 printf("\nFlags: "); 992 if ((ND.flags & ND6_IFF_PERFORMNUD) != 0) 993 printf("PERFORMNUD "); 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 1005 void 1006 rtrlist() 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 err(1, "socket"); 1061 /* NOTREACHED */ 1062 } 1063 bzero(&dr, sizeof(dr)); 1064 strcpy(dr.ifname, "lo0"); /* dummy */ 1065 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1066 err(1, "ioctl(SIOCGDRLST_IN6)"); 1067 /* NOTREACHED */ 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 1098 void 1099 plist() 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 err(1, "socket"); 1225 /* NOTREACHED */ 1226 } 1227 bzero(&pr, sizeof(pr)); 1228 strcpy(pr.ifname, "lo0"); /* dummy */ 1229 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1230 err(1, "ioctl(SIOCGPRLST_IN6)"); 1231 /* NOTREACHED */ 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 1392 void 1393 pfx_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 1405 void 1406 rtr_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 1420 void 1421 harmonize_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? */ 1436 static void 1437 setdefif(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 1462 static void 1463 getdefif() 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 1490 static char * 1491 sec2str(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 */ 1525 static void 1526 ts_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
Indexes created Sun Sep 28 07:09:56 GMT 2025