1 /* $FreeBSD: src/usr.sbin/ndp/ndp.c,v 1.2.2.6 2003/08/12 16:27:57 ume Exp $ */ 2 /* $KAME: ndp.c,v 1.65 2001/05/08 04:36:34 itojun Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 /* 33 * Copyright (c) 1984, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Sun Microsystems, Inc. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 */ 63 64 /* 65 * Based on: 66 * "@(#) Copyright (c) 1984, 1993\n\ 67 * The Regents of the University of California. All rights reserved.\n"; 68 * 69 * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; 70 */ 71 72 /* 73 * ndp - display, set, delete and flush neighbor cache 74 */ 75 76 77 #include <sys/param.h> 78 #include <sys/file.h> 79 #include <sys/ioctl.h> 80 #include <sys/socket.h> 81 #include <sys/sysctl.h> 82 #include <sys/time.h> 83 #include <sys/queue.h> 84 85 #include <net/if.h> 86 #include <net/if_var.h> 87 #include <net/if_dl.h> 88 #include <net/if_types.h> 89 #include <net/route.h> 90 91 #include <netinet/in.h> 92 #include <netinet/if_ether.h> 93 94 #include <netinet/icmp6.h> 95 #include <netinet6/in6_var.h> 96 #include <netinet6/nd6.h> 97 98 #include <arpa/inet.h> 99 100 #include <netdb.h> 101 #include <errno.h> 102 #include <nlist.h> 103 #include <stdio.h> 104 #include <string.h> 105 #include <paths.h> 106 #include <err.h> 107 #include <stdlib.h> 108 #include <fcntl.h> 109 #include <unistd.h> 110 #include "gmt2local.h" 111 112 #ifndef NI_WITHSCOPEID 113 #define NI_WITHSCOPEID 0 114 #endif 115 116 /* packing rule for routing socket */ 117 #define ROUNDUP(a) \ 118 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 119 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 120 121 static int pid; 122 static int cflag; 123 static int nflag; 124 static int tflag; 125 static int32_t thiszone; /* time difference with gmt */ 126 static int s = -1; 127 static int repeat = 0; 128 129 char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 130 char host_buf[NI_MAXHOST]; /* getnameinfo() */ 131 char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 132 133 int file(char *); 134 void getsocket(void); 135 int set(int, char **); 136 void get(char *); 137 int delete(char *); 138 void dump(struct in6_addr *); 139 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *addr, 140 int ifindex, int); 141 static char *ether_str(struct sockaddr_dl *); 142 int ndp_ether_aton(char *, u_char *); 143 void usage(void); 144 int rtmsg(int); 145 void ifinfo(int, char **); 146 void rtrlist(void); 147 void plist(void); 148 void pfx_flush(void); 149 void rtrlist(void); 150 void rtr_flush(void); 151 void harmonize_rtr(void); 152 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 153 static void getdefif(void); 154 static void setdefif(char *); 155 #endif 156 static char *sec2str(time_t t); 157 static char *ether_str(struct sockaddr_dl *sdl); 158 static void ts_print(const struct timeval *); 159 160 static char *rtpref_str[] = { 161 "medium", /* 00 */ 162 "high", /* 01 */ 163 "rsv", /* 10 */ 164 "low" /* 11 */ 165 }; 166 167 int 168 main(int argc, char **argv) 169 { 170 int ch; 171 int aflag = 0, dflag = 0, sflag = 0, Hflag = 0, 172 pflag = 0, rflag = 0, Pflag = 0, Rflag = 0; 173 174 pid = getpid(); 175 thiszone = gmt2local(0); 176 while ((ch = getopt(argc, argv, "acndfIilprstA:HPR")) != -1) 177 switch ((char)ch) { 178 case 'a': 179 aflag = 1; 180 break; 181 case 'c': 182 cflag = 1; 183 break; 184 case 'd': 185 dflag = 1; 186 break; 187 case 'I': 188 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 189 if (argc > 2) 190 setdefif(argv[2]); 191 getdefif(); /* always call it to print the result */ 192 exit(0); 193 #else 194 errx(1, "not supported yet"); 195 /*NOTREACHED*/ 196 #endif 197 case 'i' : 198 argc -= optind; 199 argv += optind; 200 if (argc < 1) 201 usage(); 202 ifinfo(argc, argv); 203 exit(0); 204 case 'n': 205 nflag = 1; 206 continue; 207 case 'p': 208 pflag = 1; 209 break; 210 case 'f' : 211 if (argc != 3) 212 usage(); 213 file(argv[2]); 214 exit(0); 215 case 'l' : 216 /* obsolete, ignored */ 217 break; 218 case 'r' : 219 rflag = 1; 220 break; 221 case 's': 222 sflag = 1; 223 break; 224 case 't': 225 tflag = 1; 226 break; 227 case 'A': 228 aflag = 1; 229 repeat = atoi(optarg); 230 if (repeat < 0) 231 usage(); 232 break; 233 case 'H' : 234 Hflag = 1; 235 break; 236 case 'P': 237 Pflag = 1; 238 break; 239 case 'R': 240 Rflag = 1; 241 break; 242 default: 243 usage(); 244 } 245 246 argc -= optind; 247 argv += optind; 248 249 if (aflag || cflag) { 250 dump(0); 251 exit(0); 252 } 253 if (dflag) { 254 if (argc != 1) 255 usage(); 256 delete(argv[0]); 257 exit(0); 258 } 259 if (pflag) { 260 plist(); 261 exit(0); 262 } 263 if (rflag) { 264 rtrlist(); 265 exit(0); 266 } 267 if (sflag) { 268 if (argc < 2 || argc > 4) 269 usage(); 270 exit(set(argc, argv) ? 1 : 0); 271 } 272 if (Hflag) { 273 harmonize_rtr(); 274 exit(0); 275 } 276 if (Pflag) { 277 pfx_flush(); 278 exit(0); 279 } 280 if (Rflag) { 281 rtr_flush(); 282 exit(0); 283 } 284 285 if (argc != 1) 286 usage(); 287 get(argv[0]); 288 exit(0); 289 } 290 291 /* 292 * Process a file to set standard ndp entries 293 */ 294 int 295 file(char *name) 296 { 297 FILE *fp; 298 int i, retval; 299 char line[100], arg[5][50], *args[5]; 300 301 if ((fp = fopen(name, "r")) == NULL) { 302 fprintf(stderr, "ndp: cannot open %s\n", name); 303 exit(1); 304 } 305 args[0] = &arg[0][0]; 306 args[1] = &arg[1][0]; 307 args[2] = &arg[2][0]; 308 args[3] = &arg[3][0]; 309 args[4] = &arg[4][0]; 310 retval = 0; 311 while(fgets(line, 100, fp) != NULL) { 312 i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2], 313 arg[3], arg[4]); 314 if (i < 2) { 315 fprintf(stderr, "ndp: bad line: %s\n", line); 316 retval = 1; 317 continue; 318 } 319 if (set(i, args)) 320 retval = 1; 321 } 322 fclose(fp); 323 return (retval); 324 } 325 326 void 327 getsocket(void) 328 { 329 if (s < 0) { 330 s = socket(PF_ROUTE, SOCK_RAW, 0); 331 if (s < 0) { 332 perror("ndp: socket"); 333 exit(1); 334 } 335 } 336 } 337 338 struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 339 struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 340 struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 341 int flags, found_entry; 342 time_t expire_time; 343 struct { 344 struct rt_msghdr m_rtm; 345 char m_space[512]; 346 } m_rtmsg; 347 348 /* 349 * Set an individual neighbor cache entry 350 */ 351 int 352 set(int argc, char **argv) 353 { 354 struct sockaddr_in6 *sin = &sin_m; 355 struct sockaddr_dl *sdl; 356 struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 357 struct addrinfo hints, *res; 358 int gai_error; 359 u_char *ea; 360 char *host = argv[0], *eaddr = argv[1]; 361 362 getsocket(); 363 argc -= 2; 364 argv += 2; 365 sdl_m = blank_sdl; 366 sin_m = blank_sin; 367 368 bzero(&hints, sizeof(hints)); 369 hints.ai_family = AF_INET6; 370 gai_error = getaddrinfo(host, NULL, &hints, &res); 371 if (gai_error) { 372 fprintf(stderr, "ndp: %s: %s\n", host, 373 gai_strerror(gai_error)); 374 return 1; 375 } 376 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 377 #ifdef __KAME__ 378 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 379 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 380 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 381 } 382 #endif 383 ea = (u_char *)LLADDR(&sdl_m); 384 if (ndp_ether_aton(eaddr, ea) == 0) 385 sdl_m.sdl_alen = 6; 386 flags = 0; 387 expire_time = 0; 388 while (argc-- > 0) { 389 if (strncmp(argv[0], "temp", 4) == 0) { 390 struct timespec sp; 391 392 clock_gettime(CLOCK_MONOTONIC, &sp); 393 expire_time = sp.tv_sec + 20 * 60; 394 } else if (strncmp(argv[0], "proxy", 5) == 0) 395 flags |= RTF_ANNOUNCE; 396 argv++; 397 } 398 if (rtmsg(RTM_GET) < 0) { 399 perror(host); 400 return (1); 401 } 402 sin = (struct sockaddr_in6 *)(rtm + 1); 403 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 404 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 405 if (sdl->sdl_family == AF_LINK && 406 (rtm->rtm_flags & RTF_LLINFO) && 407 !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) { 408 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 409 case IFT_ISO88024: case IFT_ISO88025: 410 goto overwrite; 411 } 412 /* 413 * IPv4 arp command retries with sin_other = SIN_PROXY here. 414 */ 415 fprintf(stderr, "set: cannot configure a new entry\n"); 416 return 1; 417 } 418 419 overwrite: 420 if (sdl->sdl_family != AF_LINK) { 421 printf("cannot intuit interface index and type for %s\n", host); 422 return (1); 423 } 424 sdl_m.sdl_type = sdl->sdl_type; 425 sdl_m.sdl_index = sdl->sdl_index; 426 return (rtmsg(RTM_ADD)); 427 } 428 429 /* 430 * Display an individual neighbor cache entry 431 */ 432 void 433 get(char *host) 434 { 435 struct sockaddr_in6 *sin = &sin_m; 436 struct addrinfo hints, *res; 437 int gai_error; 438 439 sin_m = blank_sin; 440 bzero(&hints, sizeof(hints)); 441 hints.ai_family = AF_INET6; 442 gai_error = getaddrinfo(host, NULL, &hints, &res); 443 if (gai_error) { 444 fprintf(stderr, "ndp: %s: %s\n", host, 445 gai_strerror(gai_error)); 446 return; 447 } 448 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 449 #ifdef __KAME__ 450 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 451 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 452 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 453 } 454 #endif 455 dump(&sin->sin6_addr); 456 if (found_entry == 0) { 457 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 458 sizeof(host_buf), NULL ,0, 459 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 460 printf("%s (%s) -- no entry\n", host, host_buf); 461 exit(1); 462 } 463 } 464 465 /* 466 * Delete a neighbor cache entry 467 */ 468 int 469 delete(char *host) 470 { 471 struct sockaddr_in6 *sin = &sin_m; 472 struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 473 struct sockaddr_dl *sdl; 474 struct addrinfo hints, *res; 475 int gai_error; 476 477 getsocket(); 478 sin_m = blank_sin; 479 480 bzero(&hints, sizeof(hints)); 481 hints.ai_family = AF_INET6; 482 gai_error = getaddrinfo(host, NULL, &hints, &res); 483 if (gai_error) { 484 fprintf(stderr, "ndp: %s: %s\n", host, 485 gai_strerror(gai_error)); 486 return 1; 487 } 488 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 489 #ifdef __KAME__ 490 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 491 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 492 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 493 } 494 #endif 495 if (rtmsg(RTM_GET) < 0) { 496 perror(host); 497 return (1); 498 } 499 sin = (struct sockaddr_in6 *)(rtm + 1); 500 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 501 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 502 if (sdl->sdl_family == AF_LINK && 503 (rtm->rtm_flags & RTF_LLINFO) && 504 !(rtm->rtm_flags & RTF_GATEWAY)) { 505 goto delete; 506 } 507 /* 508 * IPv4 arp command retries with sin_other = SIN_PROXY here. 509 */ 510 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 511 return 1; 512 } 513 514 delete: 515 if (sdl->sdl_family != AF_LINK) { 516 printf("cannot locate %s\n", host); 517 return (1); 518 } 519 if (rtmsg(RTM_DELETE) == 0) { 520 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 521 522 #ifdef __KAME__ 523 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 524 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 525 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 526 } 527 #endif 528 getnameinfo((struct sockaddr *)&s6, 529 s6.sin6_len, host_buf, 530 sizeof(host_buf), NULL, 0, 531 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 532 printf("%s (%s) deleted\n", host, host_buf); 533 } 534 535 return 0; 536 } 537 538 #define W_ADDR 31 539 #define W_LL 17 540 #define W_IF 6 541 542 /* 543 * Dump the entire neighbor cache 544 */ 545 void 546 dump(struct in6_addr *addr) 547 { 548 int mib[6]; 549 size_t needed; 550 char *lim, *buf, *next; 551 struct rt_msghdr *rtm; 552 struct sockaddr_in6 *sin; 553 struct sockaddr_dl *sdl; 554 extern int h_errno; 555 struct in6_nbrinfo *nbi; 556 struct timeval time; 557 int addrwidth; 558 int llwidth; 559 int ifwidth; 560 char flgbuf[8]; 561 char *ifname; 562 563 /* Print header */ 564 if (!tflag && !cflag) 565 printf("%-*.*s %-*.*s %*.*s %-9.9s %2s %4s %4s\n", 566 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 567 W_IF, W_IF, "Netif", "Expire", "St", "Flgs", "Prbs"); 568 569 again:; 570 mib[0] = CTL_NET; 571 mib[1] = PF_ROUTE; 572 mib[2] = 0; 573 mib[3] = AF_INET6; 574 mib[4] = NET_RT_FLAGS; 575 mib[5] = RTF_LLINFO; 576 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 577 err(1, "sysctl(PF_ROUTE estimate)"); 578 if (needed > 0) { 579 if ((buf = malloc(needed)) == NULL) 580 errx(1, "malloc"); 581 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 582 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 583 lim = buf + needed; 584 } else 585 buf = lim = NULL; 586 587 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 588 int isrouter = 0, prbs = 0; 589 590 rtm = (struct rt_msghdr *)next; 591 sin = (struct sockaddr_in6 *)(rtm + 1); 592 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 593 594 /* 595 * Some OSes can produce a route that has the LINK flag but 596 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 597 * and BSD/OS, where xx is not the interface identifier on 598 * lo0). Such routes entry would annoy getnbrinfo() below, 599 * so we skip them. 600 * XXX: such routes should have the GATEWAY flag, not the 601 * LINK flag. However, there are rotten routing software 602 * that advertises all routes that have the GATEWAY flag. 603 * Thus, KAME kernel intentionally does not set the LINK flag. 604 * What is to be fixed is not ndp, but such routing software 605 * (and the kernel workaround)... 606 */ 607 if (sdl->sdl_family != AF_LINK) 608 continue; 609 610 if (addr) { 611 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 612 continue; 613 found_entry = 1; 614 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 615 continue; 616 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 617 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 618 /* XXX: should scope id be filled in the kernel? */ 619 if (sin->sin6_scope_id == 0) 620 sin->sin6_scope_id = sdl->sdl_index; 621 #ifdef __KAME__ 622 /* KAME specific hack; removed the embedded id */ 623 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 624 #endif 625 } 626 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 627 sizeof(host_buf), NULL, 0, 628 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 629 if (cflag == 1) { 630 #ifdef RTF_WASCLONED 631 if (rtm->rtm_flags & RTF_WASCLONED) 632 delete(host_buf); 633 #else 634 delete(host_buf); 635 #endif 636 continue; 637 } 638 gettimeofday(&time, 0); 639 if (tflag) 640 ts_print(&time); 641 642 addrwidth = strlen(host_buf); 643 if (addrwidth < W_ADDR) 644 addrwidth = W_ADDR; 645 llwidth = strlen(ether_str(sdl)); 646 if (W_ADDR + W_LL - addrwidth > llwidth) 647 llwidth = W_ADDR + W_LL - addrwidth; 648 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 649 if (!ifname) 650 ifname = "?"; 651 ifwidth = strlen(ifname); 652 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 653 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 654 655 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 656 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 657 658 /* Print neighbor discovery specific informations */ 659 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 660 if (nbi) { 661 if (nbi->expire > time.tv_sec) { 662 printf(" %-9.9s", 663 sec2str(nbi->expire - time.tv_sec)); 664 } else if (nbi->expire == 0) 665 printf(" %-9.9s", "permanent"); 666 else 667 printf(" %-9.9s", "expired"); 668 669 switch(nbi->state) { 670 case ND6_LLINFO_NOSTATE: 671 printf(" N"); 672 break; 673 #ifdef ND6_LLINFO_WAITDELETE 674 case ND6_LLINFO_WAITDELETE: 675 printf(" W"); 676 break; 677 #endif 678 case ND6_LLINFO_INCOMPLETE: 679 printf(" I"); 680 break; 681 case ND6_LLINFO_REACHABLE: 682 printf(" R"); 683 break; 684 case ND6_LLINFO_STALE: 685 printf(" S"); 686 break; 687 case ND6_LLINFO_DELAY: 688 printf(" D"); 689 break; 690 case ND6_LLINFO_PROBE: 691 printf(" P"); 692 break; 693 default: 694 printf(" ?"); 695 break; 696 } 697 698 isrouter = nbi->isrouter; 699 prbs = nbi->asked; 700 } else { 701 warnx("failed to get neighbor information"); 702 printf(" "); 703 } 704 putchar(' '); 705 706 /* 707 * other flags. R: router, P: proxy, W: ?? 708 */ 709 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 710 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 711 isrouter ? "R" : "", 712 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 713 } else { 714 sin = (struct sockaddr_in6 *) 715 (sdl->sdl_len + (char *)sdl); 716 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 717 isrouter ? "R" : "", 718 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) 719 ? "P" : "", 720 (sin->sin6_len != sizeof(struct sockaddr_in6)) 721 ? "W" : "", 722 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 723 } 724 printf(" %-4.4s", flgbuf); 725 726 if (prbs) 727 printf(" %4d", prbs); 728 729 printf("\n"); 730 } 731 if (buf != NULL) 732 free(buf); 733 734 if (repeat) { 735 printf("\n"); 736 sleep(repeat); 737 goto again; 738 } 739 } 740 741 static struct in6_nbrinfo * 742 getnbrinfo(struct in6_addr *addr, int ifindex, int warning) 743 { 744 static struct in6_nbrinfo nbi; 745 int s; 746 747 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 748 err(1, "socket"); 749 750 bzero(&nbi, sizeof(nbi)); 751 if_indextoname(ifindex, nbi.ifname); 752 nbi.addr = *addr; 753 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 754 if (warning) 755 warn("ioctl(SIOCGNBRINFO_IN6)"); 756 close(s); 757 return(NULL); 758 } 759 760 close(s); 761 return(&nbi); 762 } 763 764 static char * 765 ether_str(struct sockaddr_dl *sdl) 766 { 767 static char ebuf[32]; 768 u_char *cp; 769 770 if (sdl->sdl_alen) { 771 cp = (u_char *)LLADDR(sdl); 772 sprintf(ebuf, "%x:%x:%x:%x:%x:%x", 773 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 774 } else { 775 sprintf(ebuf, "(incomplete)"); 776 } 777 778 return(ebuf); 779 } 780 781 int 782 ndp_ether_aton(char *a, u_char *n) 783 { 784 int i, o[6]; 785 786 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 787 &o[3], &o[4], &o[5]); 788 if (i != 6) { 789 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 790 return (1); 791 } 792 for (i=0; i<6; i++) 793 n[i] = o[i]; 794 return (0); 795 } 796 797 void 798 usage(void) 799 { 800 printf("usage: ndp hostname\n"); 801 printf(" ndp -a[nt]\n"); 802 printf(" ndp [-nt] -A wait\n"); 803 printf(" ndp -c[nt]\n"); 804 printf(" ndp -d[nt] hostname\n"); 805 printf(" ndp -f[nt] filename\n"); 806 printf(" ndp -i interface [flags...]\n"); 807 #ifdef SIOCSDEFIFACE_IN6 808 printf(" ndp -I [interface|delete]\n"); 809 #endif 810 printf(" ndp -p\n"); 811 printf(" ndp -r\n"); 812 printf(" ndp -s hostname ether_addr [temp] [proxy]\n"); 813 printf(" ndp -H\n"); 814 printf(" ndp -P\n"); 815 printf(" ndp -R\n"); 816 exit(1); 817 } 818 819 int 820 rtmsg(int cmd) 821 { 822 static int seq; 823 int rlen; 824 struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 825 char *cp = m_rtmsg.m_space; 826 int l; 827 828 errno = 0; 829 if (cmd == RTM_DELETE) 830 goto doit; 831 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 832 rtm->rtm_flags = flags; 833 rtm->rtm_version = RTM_VERSION; 834 835 switch (cmd) { 836 default: 837 fprintf(stderr, "ndp: internal wrong cmd\n"); 838 exit(1); 839 case RTM_ADD: 840 rtm->rtm_addrs |= RTA_GATEWAY; 841 rtm->rtm_rmx.rmx_expire = expire_time; 842 rtm->rtm_inits = RTV_EXPIRE; 843 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 844 if (rtm->rtm_flags & RTF_ANNOUNCE) { 845 rtm->rtm_flags &= ~RTF_HOST; 846 rtm->rtm_flags |= RTA_NETMASK; 847 } 848 /* FALLTHROUGH */ 849 case RTM_GET: 850 rtm->rtm_addrs |= RTA_DST; 851 } 852 #define NEXTADDR(w, s) \ 853 if (rtm->rtm_addrs & (w)) { \ 854 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 855 856 NEXTADDR(RTA_DST, sin_m); 857 NEXTADDR(RTA_GATEWAY, sdl_m); 858 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 859 NEXTADDR(RTA_NETMASK, so_mask); 860 861 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 862 doit: 863 l = rtm->rtm_msglen; 864 rtm->rtm_seq = ++seq; 865 rtm->rtm_type = cmd; 866 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 867 if (errno != ESRCH || cmd != RTM_DELETE) { 868 perror("writing to routing socket"); 869 return (-1); 870 } 871 } 872 do { 873 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 874 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 875 if (l < 0) 876 fprintf(stderr, "ndp: read from routing socket: %s\n", 877 strerror(errno)); 878 return (0); 879 } 880 881 void 882 ifinfo(int argc, char **argv) 883 { 884 struct in6_ndireq nd; 885 int i, s; 886 char *ifname = argv[0]; 887 u_int32_t newflags; 888 #ifdef IPV6CTL_USETEMPADDR 889 u_int8_t nullbuf[8]; 890 #endif 891 892 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 893 perror("ndp: socket"); 894 exit(1); 895 } 896 bzero(&nd, sizeof(nd)); 897 strcpy(nd.ifname, ifname); 898 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 899 perror("ioctl (SIOCGIFINFO_IN6)"); 900 exit(1); 901 } 902 #define ND nd.ndi 903 newflags = ND.flags; 904 for (i = 1; i < argc; i++) { 905 int clear = 0; 906 char *cp = argv[i]; 907 908 if (*cp == '-') { 909 clear = 1; 910 cp++; 911 } 912 913 #define SETFLAG(s, f) \ 914 do {\ 915 if (strcmp(cp, (s)) == 0) {\ 916 if (clear)\ 917 newflags &= ~(f);\ 918 else\ 919 newflags |= (f);\ 920 }\ 921 } while (0) 922 SETFLAG("nud", ND6_IFF_PERFORMNUD); 923 #ifdef ND6_IFF_ACCEPT_RTADV 924 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 925 #endif 926 ND.flags = newflags; 927 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 928 perror("ioctl(SIOCSIFINFO_FLAGS)"); 929 exit(1); 930 } 931 #undef SETFLAG 932 } 933 934 printf("linkmtu=%d", ND.linkmtu); 935 printf(", curhlim=%d", ND.chlim); 936 printf(", basereachable=%ds%dms", 937 ND.basereachable / 1000, ND.basereachable % 1000); 938 printf(", reachable=%ds", ND.reachable); 939 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 940 #ifdef IPV6CTL_USETEMPADDR 941 memset(nullbuf, 0, sizeof(nullbuf)); 942 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 943 int j; 944 u_int8_t *rbuf; 945 946 for (i = 0; i < 3; i++) { 947 switch(i) { 948 case 0: 949 printf("\nRandom seed(0): "); 950 rbuf = ND.randomseed0; 951 break; 952 case 1: 953 printf("\nRandom seed(1): "); 954 rbuf = ND.randomseed1; 955 break; 956 case 2: 957 printf("\nRandom ID: "); 958 rbuf = ND.randomid; 959 break; 960 } 961 for (j = 0; j < 8; j++) 962 printf("%02x", rbuf[j]); 963 } 964 } 965 #endif 966 if (ND.flags) { 967 printf("\nFlags: "); 968 if ((ND.flags & ND6_IFF_PERFORMNUD)) 969 printf("nud "); 970 #ifdef ND6_IFF_ACCEPT_RTADV 971 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 972 printf("accept_rtadv "); 973 #endif 974 } 975 putc('\n', stdout); 976 #undef ND 977 978 close(s); 979 } 980 981 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 982 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 983 #endif 984 985 void 986 rtrlist(void) 987 { 988 #ifdef ICMPV6CTL_ND6_DRLIST 989 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 990 char *buf; 991 struct in6_defrouter *p, *ep; 992 size_t l; 993 struct timeval time; 994 995 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 996 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 997 /*NOTREACHED*/ 998 } 999 buf = malloc(l); 1000 if (!buf) { 1001 errx(1, "not enough core"); 1002 /*NOTREACHED*/ 1003 } 1004 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1005 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1006 /*NOTREACHED*/ 1007 } 1008 1009 ep = (struct in6_defrouter *)(buf + l); 1010 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1011 int rtpref; 1012 1013 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1014 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1015 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)) != 0) 1016 strlcpy(host_buf, "?", sizeof(host_buf)); 1017 1018 printf("%s if=%s", host_buf, 1019 if_indextoname(p->if_index, ifix_buf)); 1020 printf(", flags=%s%s", 1021 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1022 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1023 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1024 printf(", pref=%s", rtpref_str[rtpref]); 1025 1026 gettimeofday(&time, 0); 1027 if (p->expire == 0) 1028 printf(", expire=Never\n"); 1029 else 1030 printf(", expire=%s\n", 1031 sec2str(p->expire - time.tv_sec)); 1032 } 1033 free(buf); 1034 #else 1035 struct in6_drlist dr; 1036 int s, i; 1037 struct timeval time; 1038 1039 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1040 perror("ndp: socket"); 1041 exit(1); 1042 } 1043 bzero(&dr, sizeof(dr)); 1044 strcpy(dr.ifname, "lo0"); /* dummy */ 1045 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1046 perror("ioctl (SIOCGDRLST_IN6)"); 1047 exit(1); 1048 } 1049 #define DR dr.defrouter[i] 1050 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1051 struct sockaddr_in6 sin6; 1052 1053 bzero(&sin6, sizeof(sin6)); 1054 sin6.sin6_family = AF_INET6; 1055 sin6.sin6_len = sizeof(sin6); 1056 sin6.sin6_addr = DR.rtaddr; 1057 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1058 sizeof(host_buf), NULL, 0, 1059 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 1060 1061 printf("%s if=%s", host_buf, 1062 if_indextoname(DR.if_index, ifix_buf)); 1063 printf(", flags=%s%s", 1064 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1065 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1066 gettimeofday(&time, 0); 1067 if (DR.expire == 0) 1068 printf(", expire=Never\n"); 1069 else 1070 printf(", expire=%s\n", 1071 sec2str(DR.expire - time.tv_sec)); 1072 } 1073 #undef DR 1074 close(s); 1075 #endif 1076 } 1077 1078 void 1079 plist(void) 1080 { 1081 #ifdef ICMPV6CTL_ND6_PRLIST 1082 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1083 char *buf; 1084 struct in6_prefix *p, *ep, *n; 1085 struct sockaddr_in6 *advrtr; 1086 size_t l; 1087 struct timeval time; 1088 #ifdef NI_WITHSCOPEID 1089 const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID; 1090 int ninflags = (nflag ? NI_NUMERICHOST : 0) | NI_WITHSCOPEID; 1091 #else 1092 const int niflags = NI_NUMERICHOST; 1093 int ninflags = nflag ? NI_NUMERICHOST : 0; 1094 #endif 1095 char namebuf[NI_MAXHOST]; 1096 1097 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1098 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1099 /*NOTREACHED*/ 1100 } 1101 buf = malloc(l); 1102 if (!buf) { 1103 errx(1, "not enough core"); 1104 /*NOTREACHED*/ 1105 } 1106 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1107 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1108 /*NOTREACHED*/ 1109 } 1110 1111 ep = (struct in6_prefix *)(buf + l); 1112 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1113 advrtr = (struct sockaddr_in6 *)(p + 1); 1114 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1115 1116 if (getnameinfo((struct sockaddr *)&p->prefix, 1117 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1118 NULL, 0, niflags) != 0) 1119 strlcpy(namebuf, "?", sizeof(namebuf)); 1120 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1121 if_indextoname(p->if_index, ifix_buf)); 1122 1123 gettimeofday(&time, 0); 1124 /* 1125 * meaning of fields, especially flags, is very different 1126 * by origin. notify the difference to the users. 1127 */ 1128 printf("flags=%s%s%s%s%s", 1129 p->raflags.onlink ? "L" : "", 1130 p->raflags.autonomous ? "A" : "", 1131 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1132 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1133 #ifdef NDPRF_HOME 1134 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1135 #else 1136 "" 1137 #endif 1138 ); 1139 if (p->vltime == ND6_INFINITE_LIFETIME) 1140 printf(" vltime=infinity"); 1141 else 1142 printf(" vltime=%ld", (long)p->vltime); 1143 if (p->pltime == ND6_INFINITE_LIFETIME) 1144 printf(", pltime=infinity"); 1145 else 1146 printf(", pltime=%ld", (long)p->pltime); 1147 if (p->expire == 0) 1148 printf(", expire=Never"); 1149 else if (p->expire >= time.tv_sec) 1150 printf(", expire=%s", 1151 sec2str(p->expire - time.tv_sec)); 1152 else 1153 printf(", expired"); 1154 printf(", ref=%d", p->refcnt); 1155 printf("\n"); 1156 /* 1157 * "advertising router" list is meaningful only if the prefix 1158 * information is from RA. 1159 */ 1160 if (p->advrtrs) { 1161 int j; 1162 struct sockaddr_in6 *sin6; 1163 1164 sin6 = (struct sockaddr_in6 *)(p + 1); 1165 printf(" advertised by\n"); 1166 for (j = 0; j < p->advrtrs; j++) { 1167 struct in6_nbrinfo *nbi; 1168 1169 if (getnameinfo((struct sockaddr *)sin6, 1170 sin6->sin6_len, namebuf, sizeof(namebuf), 1171 NULL, 0, ninflags) != 0) 1172 strlcpy(namebuf, "?", sizeof(namebuf)); 1173 printf(" %s", namebuf); 1174 1175 nbi = getnbrinfo(&sin6->sin6_addr, p->if_index, 1176 0); 1177 if (nbi) { 1178 switch(nbi->state) { 1179 case ND6_LLINFO_REACHABLE: 1180 case ND6_LLINFO_STALE: 1181 case ND6_LLINFO_DELAY: 1182 case ND6_LLINFO_PROBE: 1183 printf(" (reachable)\n"); 1184 break; 1185 default: 1186 printf(" (unreachable)\n"); 1187 } 1188 } else 1189 printf(" (no neighbor state)\n"); 1190 sin6++; 1191 } 1192 } else 1193 printf(" No advertising router\n"); 1194 } 1195 free(buf); 1196 #else 1197 struct in6_prlist pr; 1198 int s, i; 1199 struct timeval time; 1200 1201 gettimeofday(&time, 0); 1202 1203 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1204 perror("ndp: socket"); 1205 exit(1); 1206 } 1207 bzero(&pr, sizeof(pr)); 1208 strcpy(pr.ifname, "lo0"); /* dummy */ 1209 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1210 perror("ioctl (SIOCGPRLST_IN6)"); 1211 exit(1); 1212 } 1213 #define PR pr.prefix[i] 1214 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1215 struct sockaddr_in6 p6; 1216 char namebuf[NI_MAXHOST]; 1217 int niflags; 1218 1219 #ifdef NDPRF_ONLINK 1220 p6 = PR.prefix; 1221 #else 1222 memset(&p6, 0, sizeof(p6)); 1223 p6.sin6_family = AF_INET6; 1224 p6.sin6_len = sizeof(p6); 1225 p6.sin6_addr = PR.prefix; 1226 #endif 1227 1228 /* 1229 * copy link index to sin6_scope_id field. 1230 * XXX: KAME specific. 1231 */ 1232 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1233 u_int16_t linkid; 1234 1235 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1236 sizeof(linkid)); 1237 linkid = ntohs(linkid); 1238 p6.sin6_scope_id = linkid; 1239 p6.sin6_addr.s6_addr[2] = 0; 1240 p6.sin6_addr.s6_addr[3] = 0; 1241 } 1242 1243 niflags = NI_NUMERICHOST; 1244 #ifdef __KAME__ 1245 niflags |= NI_WITHSCOPEID; 1246 #endif 1247 if (getnameinfo((struct sockaddr *)&p6, 1248 sizeof(p6), namebuf, sizeof(namebuf), 1249 NULL, 0, niflags)) { 1250 warnx("getnameinfo failed"); 1251 continue; 1252 } 1253 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1254 if_indextoname(PR.if_index, ifix_buf)); 1255 1256 gettimeofday(&time, 0); 1257 /* 1258 * meaning of fields, especially flags, is very different 1259 * by origin. notify the difference to the users. 1260 */ 1261 #if 0 1262 printf(" %s", 1263 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1264 #endif 1265 #ifdef NDPRF_ONLINK 1266 printf("flags=%s%s%s%s%s", 1267 PR.raflags.onlink ? "L" : "", 1268 PR.raflags.autonomous ? "A" : "", 1269 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1270 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1271 #ifdef NDPRF_HOME 1272 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1273 #else 1274 "" 1275 #endif 1276 ); 1277 #else 1278 printf("flags=%s%s", 1279 PR.raflags.onlink ? "L" : "", 1280 PR.raflags.autonomous ? "A" : ""); 1281 #endif 1282 if (PR.vltime == ND6_INFINITE_LIFETIME) 1283 printf(" vltime=infinity"); 1284 else 1285 printf(" vltime=%ld", (long)PR.vltime); 1286 if (PR.pltime == ND6_INFINITE_LIFETIME) 1287 printf(", pltime=infinity"); 1288 else 1289 printf(", pltime=%ld", (long)PR.pltime); 1290 if (PR.expire == 0) 1291 printf(", expire=Never"); 1292 else if (PR.expire >= time.tv_sec) 1293 printf(", expire=%s", 1294 sec2str(PR.expire - time.tv_sec)); 1295 else 1296 printf(", expired"); 1297 #ifdef NDPRF_ONLINK 1298 printf(", ref=%d", PR.refcnt); 1299 #endif 1300 #if 0 1301 switch (PR.origin) { 1302 case PR_ORIG_RA: 1303 printf(", origin=RA"); 1304 break; 1305 case PR_ORIG_RR: 1306 printf(", origin=RR"); 1307 break; 1308 case PR_ORIG_STATIC: 1309 printf(", origin=static"); 1310 break; 1311 case PR_ORIG_KERNEL: 1312 printf(", origin=kernel"); 1313 break; 1314 default: 1315 printf(", origin=?"); 1316 break; 1317 } 1318 #endif 1319 printf("\n"); 1320 /* 1321 * "advertising router" list is meaningful only if the prefix 1322 * information is from RA. 1323 */ 1324 if (0 && /* prefix origin is almost obsolted */ 1325 PR.origin != PR_ORIG_RA) 1326 ; 1327 else if (PR.advrtrs) { 1328 int j; 1329 printf(" advertised by\n"); 1330 for (j = 0; j < PR.advrtrs; j++) { 1331 struct sockaddr_in6 sin6; 1332 struct in6_nbrinfo *nbi; 1333 1334 bzero(&sin6, sizeof(sin6)); 1335 sin6.sin6_family = AF_INET6; 1336 sin6.sin6_len = sizeof(sin6); 1337 sin6.sin6_addr = PR.advrtr[j]; 1338 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1339 getnameinfo((struct sockaddr *)&sin6, 1340 sin6.sin6_len, host_buf, 1341 sizeof(host_buf), NULL, 0, 1342 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 1343 printf(" %s", host_buf); 1344 1345 nbi = getnbrinfo(&sin6.sin6_addr, PR.if_index, 1346 0); 1347 if (nbi) { 1348 switch(nbi->state) { 1349 case ND6_LLINFO_REACHABLE: 1350 case ND6_LLINFO_STALE: 1351 case ND6_LLINFO_DELAY: 1352 case ND6_LLINFO_PROBE: 1353 printf(" (reachable)\n"); 1354 break; 1355 default: 1356 printf(" (unreachable)\n"); 1357 } 1358 } else 1359 printf(" (no neighbor state)\n"); 1360 } 1361 if (PR.advrtrs > DRLSTSIZ) 1362 printf(" and %d routers\n", 1363 PR.advrtrs - DRLSTSIZ); 1364 } else 1365 printf(" No advertising router\n"); 1366 } 1367 #undef PR 1368 close(s); 1369 #endif 1370 } 1371 1372 void 1373 pfx_flush(void) 1374 { 1375 char dummyif[IFNAMSIZ+8]; 1376 int s; 1377 1378 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1379 err(1, "socket"); 1380 strcpy(dummyif, "lo0"); /* dummy */ 1381 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1382 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1383 } 1384 1385 void 1386 rtr_flush(void) 1387 { 1388 char dummyif[IFNAMSIZ+8]; 1389 int s; 1390 1391 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1392 err(1, "socket"); 1393 strcpy(dummyif, "lo0"); /* dummy */ 1394 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1395 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1396 1397 close(s); 1398 } 1399 1400 void 1401 harmonize_rtr(void) 1402 { 1403 char dummyif[IFNAMSIZ+8]; 1404 int s; 1405 1406 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1407 err(1, "socket"); 1408 strcpy(dummyif, "lo0"); /* dummy */ 1409 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1410 err(1, "ioctl (SIOCSNDFLUSH_IN6)"); 1411 1412 close(s); 1413 } 1414 1415 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1416 static void 1417 setdefif(char *ifname) 1418 { 1419 struct in6_ndifreq ndifreq; 1420 unsigned int ifindex; 1421 1422 if (strcasecmp(ifname, "delete") == 0) 1423 ifindex = 0; 1424 else { 1425 if ((ifindex = if_nametoindex(ifname)) == 0) 1426 err(1, "failed to resolve i/f index for %s", ifname); 1427 } 1428 1429 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1430 err(1, "socket"); 1431 1432 strcpy(ndifreq.ifname, "lo0"); /* dummy */ 1433 ndifreq.ifindex = ifindex; 1434 1435 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1436 err(1, "ioctl (SIOCSDEFIFACE_IN6)"); 1437 1438 close(s); 1439 } 1440 1441 static void 1442 getdefif(void) 1443 { 1444 struct in6_ndifreq ndifreq; 1445 char ifname[IFNAMSIZ+8]; 1446 1447 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1448 err(1, "socket"); 1449 1450 memset(&ndifreq, 0, sizeof(ndifreq)); 1451 strcpy(ndifreq.ifname, "lo0"); /* dummy */ 1452 1453 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1454 err(1, "ioctl (SIOCGDEFIFACE_IN6)"); 1455 1456 if (ndifreq.ifindex == 0) 1457 printf("No default interface.\n"); 1458 else { 1459 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1460 err(1, "failed to resolve ifname for index %lu", 1461 ndifreq.ifindex); 1462 printf("ND default interface = %s\n", ifname); 1463 } 1464 1465 close(s); 1466 } 1467 #endif 1468 1469 static char * 1470 sec2str(time_t total) 1471 { 1472 static char result[256]; 1473 int days, hours, mins, secs; 1474 int first = 1; 1475 char *p = result; 1476 1477 days = total / 3600 / 24; 1478 hours = (total / 3600) % 24; 1479 mins = (total / 60) % 60; 1480 secs = total % 60; 1481 1482 if (days) { 1483 first = 0; 1484 p += sprintf(p, "%dd", days); 1485 } 1486 if (!first || hours) { 1487 first = 0; 1488 p += sprintf(p, "%dh", hours); 1489 } 1490 if (!first || mins) { 1491 first = 0; 1492 p += sprintf(p, "%dm", mins); 1493 } 1494 sprintf(p, "%ds", secs); 1495 1496 return(result); 1497 } 1498 1499 /* 1500 * Print the timestamp 1501 * from tcpdump/util.c 1502 */ 1503 static void 1504 ts_print(const struct timeval *tvp) 1505 { 1506 int s; 1507 1508 /* Default */ 1509 s = (tvp->tv_sec + thiszone) % 86400; 1510 printf("%02d:%02d:%02d.%06u ", 1511 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1512 } 1513