1 /* $FreeBSD: src/usr.sbin/ndp/ndp.c,v 1.2.2.5 2001/08/13 02:58:26 sumikawa Exp $ */ 2 /* $DragonFly: src/usr.sbin/ndp/ndp.c,v 1.3 2003/11/03 19:31:39 eirikn Exp $ */ 3 /* $KAME: ndp.c,v 1.65 2001/05/08 04:36:34 itojun Exp $ */ 4 5 /* 6 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 /* 34 * Copyright (c) 1984, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * This code is derived from software contributed to Berkeley by 38 * Sun Microsystems, Inc. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. All advertising materials mentioning features or use of this software 49 * must display the following acknowledgement: 50 * This product includes software developed by the University of 51 * California, Berkeley and its contributors. 52 * 4. Neither the name of the University nor the names of its contributors 53 * may be used to endorse or promote products derived from this software 54 * without specific prior written permission. 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 57 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 58 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 59 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 60 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 61 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 62 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 63 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 64 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 65 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 66 * SUCH DAMAGE. 67 */ 68 69 /* 70 * Based on: 71 * "@(#) Copyright (c) 1984, 1993\n\ 72 * The Regents of the University of California. All rights reserved.\n"; 73 * 74 * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; 75 */ 76 77 /* 78 * ndp - display, set, delete and flush neighbor cache 79 */ 80 81 82 #include <sys/param.h> 83 #include <sys/file.h> 84 #include <sys/ioctl.h> 85 #include <sys/socket.h> 86 #include <sys/sysctl.h> 87 #include <sys/time.h> 88 #include <sys/queue.h> 89 90 #include <net/if.h> 91 #include <net/if_var.h> 92 #include <net/if_dl.h> 93 #include <net/if_types.h> 94 #include <net/route.h> 95 96 #include <netinet/in.h> 97 #include <netinet/if_ether.h> 98 99 #include <netinet/icmp6.h> 100 #include <netinet6/in6_var.h> 101 #include <netinet6/nd6.h> 102 103 #include <arpa/inet.h> 104 105 #include <netdb.h> 106 #include <errno.h> 107 #include <nlist.h> 108 #include <stdio.h> 109 #include <string.h> 110 #include <paths.h> 111 #include <err.h> 112 #include <stdlib.h> 113 #include <fcntl.h> 114 #include <unistd.h> 115 #include "gmt2local.h" 116 117 #ifndef NI_WITHSCOPEID 118 #define NI_WITHSCOPEID 0 119 #endif 120 121 /* packing rule for routing socket */ 122 #define ROUNDUP(a) \ 123 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 124 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 125 126 static int pid; 127 static int cflag; 128 static int nflag; 129 static int tflag; 130 static int32_t thiszone; /* time difference with gmt */ 131 static int s = -1; 132 static int repeat = 0; 133 134 char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 135 char host_buf[NI_MAXHOST]; /* getnameinfo() */ 136 char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 137 138 int main(int, char **); 139 int file(char *); 140 void getsocket(void); 141 int set(int, char **); 142 void get(char *); 143 int delete(char *); 144 void dump(struct in6_addr *); 145 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *addr, 146 int ifindex, int); 147 static char *ether_str(struct sockaddr_dl *); 148 int ndp_ether_aton(char *, u_char *); 149 void usage(void); 150 int rtmsg(int); 151 void ifinfo(int, char **); 152 void rtrlist(void); 153 void plist(void); 154 void pfx_flush(void); 155 void rtrlist(void); 156 void rtr_flush(void); 157 void harmonize_rtr(void); 158 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 159 static void getdefif(void); 160 static void setdefif(char *); 161 #endif 162 static char *sec2str(time_t t); 163 static char *ether_str(struct sockaddr_dl *sdl); 164 static void ts_print(const struct timeval *); 165 166 static char *rtpref_str[] = { 167 "medium", /* 00 */ 168 "high", /* 01 */ 169 "rsv", /* 10 */ 170 "low" /* 11 */ 171 }; 172 173 int 174 main(argc, argv) 175 int argc; 176 char **argv; 177 { 178 int ch; 179 int aflag = 0, dflag = 0, sflag = 0, Hflag = 0, 180 pflag = 0, rflag = 0, Pflag = 0, Rflag = 0; 181 182 pid = getpid(); 183 thiszone = gmt2local(0); 184 while ((ch = getopt(argc, argv, "acndfIilprstA:HPR")) != -1) 185 switch ((char)ch) { 186 case 'a': 187 aflag = 1; 188 break; 189 case 'c': 190 cflag = 1; 191 break; 192 case 'd': 193 dflag = 1; 194 break; 195 case 'I': 196 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 197 if (argc > 2) 198 setdefif(argv[2]); 199 getdefif(); /* always call it to print the result */ 200 exit(0); 201 #else 202 errx(1, "not supported yet"); 203 /*NOTREACHED*/ 204 #endif 205 case 'i' : 206 argc -= optind; 207 argv += optind; 208 if (argc < 1) 209 usage(); 210 ifinfo(argc, argv); 211 exit(0); 212 case 'n': 213 nflag = 1; 214 continue; 215 case 'p': 216 pflag = 1; 217 break; 218 case 'f' : 219 if (argc != 3) 220 usage(); 221 file(argv[2]); 222 exit(0); 223 case 'l' : 224 /* obsolete, ignored */ 225 break; 226 case 'r' : 227 rflag = 1; 228 break; 229 case 's': 230 sflag = 1; 231 break; 232 case 't': 233 tflag = 1; 234 break; 235 case 'A': 236 aflag = 1; 237 repeat = atoi(optarg); 238 if (repeat < 0) 239 usage(); 240 break; 241 case 'H' : 242 Hflag = 1; 243 break; 244 case 'P': 245 Pflag = 1; 246 break; 247 case 'R': 248 Rflag = 1; 249 break; 250 default: 251 usage(); 252 } 253 254 argc -= optind; 255 argv += optind; 256 257 if (aflag || cflag) { 258 dump(0); 259 exit(0); 260 } 261 if (dflag) { 262 if (argc != 1) 263 usage(); 264 delete(argv[0]); 265 exit(0); 266 } 267 if (pflag) { 268 plist(); 269 exit(0); 270 } 271 if (rflag) { 272 rtrlist(); 273 exit(0); 274 } 275 if (sflag) { 276 if (argc < 2 || argc > 4) 277 usage(); 278 exit(set(argc, argv) ? 1 : 0); 279 } 280 if (Hflag) { 281 harmonize_rtr(); 282 exit(0); 283 } 284 if (Pflag) { 285 pfx_flush(); 286 exit(0); 287 } 288 if (Rflag) { 289 rtr_flush(); 290 exit(0); 291 } 292 293 if (argc != 1) 294 usage(); 295 get(argv[0]); 296 exit(0); 297 } 298 299 /* 300 * Process a file to set standard ndp entries 301 */ 302 int 303 file(name) 304 char *name; 305 { 306 FILE *fp; 307 int i, retval; 308 char line[100], arg[5][50], *args[5]; 309 310 if ((fp = fopen(name, "r")) == NULL) { 311 fprintf(stderr, "ndp: cannot open %s\n", name); 312 exit(1); 313 } 314 args[0] = &arg[0][0]; 315 args[1] = &arg[1][0]; 316 args[2] = &arg[2][0]; 317 args[3] = &arg[3][0]; 318 args[4] = &arg[4][0]; 319 retval = 0; 320 while(fgets(line, 100, fp) != NULL) { 321 i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2], 322 arg[3], arg[4]); 323 if (i < 2) { 324 fprintf(stderr, "ndp: bad line: %s\n", line); 325 retval = 1; 326 continue; 327 } 328 if (set(i, args)) 329 retval = 1; 330 } 331 fclose(fp); 332 return (retval); 333 } 334 335 void 336 getsocket() 337 { 338 if (s < 0) { 339 s = socket(PF_ROUTE, SOCK_RAW, 0); 340 if (s < 0) { 341 perror("ndp: socket"); 342 exit(1); 343 } 344 } 345 } 346 347 struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 348 struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 349 struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 350 int expire_time, flags, found_entry; 351 struct { 352 struct rt_msghdr m_rtm; 353 char m_space[512]; 354 } m_rtmsg; 355 356 /* 357 * Set an individual neighbor cache entry 358 */ 359 int 360 set(argc, argv) 361 int argc; 362 char **argv; 363 { 364 register struct sockaddr_in6 *sin = &sin_m; 365 register struct sockaddr_dl *sdl; 366 register struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 367 struct addrinfo hints, *res; 368 int gai_error; 369 u_char *ea; 370 char *host = argv[0], *eaddr = argv[1]; 371 372 getsocket(); 373 argc -= 2; 374 argv += 2; 375 sdl_m = blank_sdl; 376 sin_m = blank_sin; 377 378 bzero(&hints, sizeof(hints)); 379 hints.ai_family = AF_INET6; 380 gai_error = getaddrinfo(host, NULL, &hints, &res); 381 if (gai_error) { 382 fprintf(stderr, "ndp: %s: %s\n", host, 383 gai_strerror(gai_error)); 384 return 1; 385 } 386 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 387 #ifdef __KAME__ 388 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 389 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 390 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 391 } 392 #endif 393 ea = (u_char *)LLADDR(&sdl_m); 394 if (ndp_ether_aton(eaddr, ea) == 0) 395 sdl_m.sdl_alen = 6; 396 flags = expire_time = 0; 397 while (argc-- > 0) { 398 if (strncmp(argv[0], "temp", 4) == 0) { 399 struct timeval time; 400 gettimeofday(&time, 0); 401 expire_time = time.tv_sec + 20 * 60; 402 } else if (strncmp(argv[0], "proxy", 5) == 0) 403 flags |= RTF_ANNOUNCE; 404 argv++; 405 } 406 if (rtmsg(RTM_GET) < 0) { 407 perror(host); 408 return (1); 409 } 410 sin = (struct sockaddr_in6 *)(rtm + 1); 411 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 412 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 413 if (sdl->sdl_family == AF_LINK && 414 (rtm->rtm_flags & RTF_LLINFO) && 415 !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) { 416 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 417 case IFT_ISO88024: case IFT_ISO88025: 418 goto overwrite; 419 } 420 /* 421 * IPv4 arp command retries with sin_other = SIN_PROXY here. 422 */ 423 fprintf(stderr, "set: cannot configure a new entry\n"); 424 return 1; 425 } 426 427 overwrite: 428 if (sdl->sdl_family != AF_LINK) { 429 printf("cannot intuit interface index and type for %s\n", host); 430 return (1); 431 } 432 sdl_m.sdl_type = sdl->sdl_type; 433 sdl_m.sdl_index = sdl->sdl_index; 434 return (rtmsg(RTM_ADD)); 435 } 436 437 /* 438 * Display an individual neighbor cache entry 439 */ 440 void 441 get(host) 442 char *host; 443 { 444 struct sockaddr_in6 *sin = &sin_m; 445 struct addrinfo hints, *res; 446 int gai_error; 447 448 sin_m = blank_sin; 449 bzero(&hints, sizeof(hints)); 450 hints.ai_family = AF_INET6; 451 gai_error = getaddrinfo(host, NULL, &hints, &res); 452 if (gai_error) { 453 fprintf(stderr, "ndp: %s: %s\n", host, 454 gai_strerror(gai_error)); 455 return; 456 } 457 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 458 #ifdef __KAME__ 459 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 460 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 461 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 462 } 463 #endif 464 dump(&sin->sin6_addr); 465 if (found_entry == 0) { 466 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 467 sizeof(host_buf), NULL ,0, 468 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 469 printf("%s (%s) -- no entry\n", host, host_buf); 470 exit(1); 471 } 472 } 473 474 /* 475 * Delete a neighbor cache entry 476 */ 477 int 478 delete(host) 479 char *host; 480 { 481 struct sockaddr_in6 *sin = &sin_m; 482 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 483 struct sockaddr_dl *sdl; 484 struct addrinfo hints, *res; 485 int gai_error; 486 487 getsocket(); 488 sin_m = blank_sin; 489 490 bzero(&hints, sizeof(hints)); 491 hints.ai_family = AF_INET6; 492 gai_error = getaddrinfo(host, NULL, &hints, &res); 493 if (gai_error) { 494 fprintf(stderr, "ndp: %s: %s\n", host, 495 gai_strerror(gai_error)); 496 return 1; 497 } 498 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 499 #ifdef __KAME__ 500 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 501 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 502 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 503 } 504 #endif 505 if (rtmsg(RTM_GET) < 0) { 506 perror(host); 507 return (1); 508 } 509 sin = (struct sockaddr_in6 *)(rtm + 1); 510 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 511 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 512 if (sdl->sdl_family == AF_LINK && 513 (rtm->rtm_flags & RTF_LLINFO) && 514 !(rtm->rtm_flags & RTF_GATEWAY)) { 515 goto delete; 516 } 517 /* 518 * IPv4 arp command retries with sin_other = SIN_PROXY here. 519 */ 520 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 521 return 1; 522 } 523 524 delete: 525 if (sdl->sdl_family != AF_LINK) { 526 printf("cannot locate %s\n", host); 527 return (1); 528 } 529 if (rtmsg(RTM_DELETE) == 0) { 530 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 531 532 #ifdef __KAME__ 533 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 534 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 535 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 536 } 537 #endif 538 getnameinfo((struct sockaddr *)&s6, 539 s6.sin6_len, host_buf, 540 sizeof(host_buf), NULL, 0, 541 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 542 printf("%s (%s) deleted\n", host, host_buf); 543 } 544 545 return 0; 546 } 547 548 #define W_ADDR 31 549 #define W_LL 17 550 #define W_IF 6 551 552 /* 553 * Dump the entire neighbor cache 554 */ 555 void 556 dump(addr) 557 struct in6_addr *addr; 558 { 559 int mib[6]; 560 size_t needed; 561 char *lim, *buf, *next; 562 struct rt_msghdr *rtm; 563 struct sockaddr_in6 *sin; 564 struct sockaddr_dl *sdl; 565 extern int h_errno; 566 struct in6_nbrinfo *nbi; 567 struct timeval time; 568 int addrwidth; 569 int llwidth; 570 int ifwidth; 571 char flgbuf[8]; 572 char *ifname; 573 574 /* Print header */ 575 if (!tflag && !cflag) 576 printf("%-*.*s %-*.*s %*.*s %-9.9s %2s %4s %4s\n", 577 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 578 W_IF, W_IF, "Netif", "Expire", "St", "Flgs", "Prbs"); 579 580 again:; 581 mib[0] = CTL_NET; 582 mib[1] = PF_ROUTE; 583 mib[2] = 0; 584 mib[3] = AF_INET6; 585 mib[4] = NET_RT_FLAGS; 586 mib[5] = RTF_LLINFO; 587 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 588 err(1, "sysctl(PF_ROUTE estimate)"); 589 if (needed > 0) { 590 if ((buf = malloc(needed)) == NULL) 591 errx(1, "malloc"); 592 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 593 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 594 lim = buf + needed; 595 } else 596 buf = lim = NULL; 597 598 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 599 int isrouter = 0, prbs = 0; 600 601 rtm = (struct rt_msghdr *)next; 602 sin = (struct sockaddr_in6 *)(rtm + 1); 603 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 604 605 /* 606 * Some OSes can produce a route that has the LINK flag but 607 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 608 * and BSD/OS, where xx is not the interface identifier on 609 * lo0). Such routes entry would annoy getnbrinfo() below, 610 * so we skip them. 611 * XXX: such routes should have the GATEWAY flag, not the 612 * LINK flag. However, there are rotten routing software 613 * that advertises all routes that have the GATEWAY flag. 614 * Thus, KAME kernel intentionally does not set the LINK flag. 615 * What is to be fixed is not ndp, but such routing software 616 * (and the kernel workaround)... 617 */ 618 if (sdl->sdl_family != AF_LINK) 619 continue; 620 621 if (addr) { 622 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 623 continue; 624 found_entry = 1; 625 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 626 continue; 627 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 628 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 629 /* XXX: should scope id be filled in the kernel? */ 630 if (sin->sin6_scope_id == 0) 631 sin->sin6_scope_id = sdl->sdl_index; 632 #ifdef __KAME__ 633 /* KAME specific hack; removed the embedded id */ 634 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 635 #endif 636 } 637 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 638 sizeof(host_buf), NULL, 0, 639 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 640 if (cflag == 1) { 641 #ifdef RTF_WASCLONED 642 if (rtm->rtm_flags & RTF_WASCLONED) 643 delete(host_buf); 644 #else 645 delete(host_buf); 646 #endif 647 continue; 648 } 649 gettimeofday(&time, 0); 650 if (tflag) 651 ts_print(&time); 652 653 addrwidth = strlen(host_buf); 654 if (addrwidth < W_ADDR) 655 addrwidth = W_ADDR; 656 llwidth = strlen(ether_str(sdl)); 657 if (W_ADDR + W_LL - addrwidth > llwidth) 658 llwidth = W_ADDR + W_LL - addrwidth; 659 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 660 if (!ifname) 661 ifname = "?"; 662 ifwidth = strlen(ifname); 663 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 664 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 665 666 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 667 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 668 669 /* Print neighbor discovery specific informations */ 670 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 671 if (nbi) { 672 if (nbi->expire > time.tv_sec) { 673 printf(" %-9.9s", 674 sec2str(nbi->expire - time.tv_sec)); 675 } else if (nbi->expire == 0) 676 printf(" %-9.9s", "permanent"); 677 else 678 printf(" %-9.9s", "expired"); 679 680 switch(nbi->state) { 681 case ND6_LLINFO_NOSTATE: 682 printf(" N"); 683 break; 684 #ifdef ND6_LLINFO_WAITDELETE 685 case ND6_LLINFO_WAITDELETE: 686 printf(" W"); 687 break; 688 #endif 689 case ND6_LLINFO_INCOMPLETE: 690 printf(" I"); 691 break; 692 case ND6_LLINFO_REACHABLE: 693 printf(" R"); 694 break; 695 case ND6_LLINFO_STALE: 696 printf(" S"); 697 break; 698 case ND6_LLINFO_DELAY: 699 printf(" D"); 700 break; 701 case ND6_LLINFO_PROBE: 702 printf(" P"); 703 break; 704 default: 705 printf(" ?"); 706 break; 707 } 708 709 isrouter = nbi->isrouter; 710 prbs = nbi->asked; 711 } else { 712 warnx("failed to get neighbor information"); 713 printf(" "); 714 } 715 putchar(' '); 716 717 /* 718 * other flags. R: router, P: proxy, W: ?? 719 */ 720 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 721 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 722 isrouter ? "R" : "", 723 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 724 } else { 725 sin = (struct sockaddr_in6 *) 726 (sdl->sdl_len + (char *)sdl); 727 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 728 isrouter ? "R" : "", 729 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) 730 ? "P" : "", 731 (sin->sin6_len != sizeof(struct sockaddr_in6)) 732 ? "W" : "", 733 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 734 } 735 printf(" %-4.4s", flgbuf); 736 737 if (prbs) 738 printf(" %4d", prbs); 739 740 printf("\n"); 741 } 742 if (buf != NULL) 743 free(buf); 744 745 if (repeat) { 746 printf("\n"); 747 sleep(repeat); 748 goto again; 749 } 750 } 751 752 static struct in6_nbrinfo * 753 getnbrinfo(addr, ifindex, warning) 754 struct in6_addr *addr; 755 int ifindex; 756 int warning; 757 { 758 static struct in6_nbrinfo nbi; 759 int s; 760 761 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 762 err(1, "socket"); 763 764 bzero(&nbi, sizeof(nbi)); 765 if_indextoname(ifindex, nbi.ifname); 766 nbi.addr = *addr; 767 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 768 if (warning) 769 warn("ioctl(SIOCGNBRINFO_IN6)"); 770 close(s); 771 return(NULL); 772 } 773 774 close(s); 775 return(&nbi); 776 } 777 778 static char * 779 ether_str(sdl) 780 struct sockaddr_dl *sdl; 781 { 782 static char ebuf[32]; 783 u_char *cp; 784 785 if (sdl->sdl_alen) { 786 cp = (u_char *)LLADDR(sdl); 787 sprintf(ebuf, "%x:%x:%x:%x:%x:%x", 788 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 789 } else { 790 sprintf(ebuf, "(incomplete)"); 791 } 792 793 return(ebuf); 794 } 795 796 int 797 ndp_ether_aton(a, n) 798 char *a; 799 u_char *n; 800 { 801 int i, o[6]; 802 803 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 804 &o[3], &o[4], &o[5]); 805 if (i != 6) { 806 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 807 return (1); 808 } 809 for (i=0; i<6; i++) 810 n[i] = o[i]; 811 return (0); 812 } 813 814 void 815 usage() 816 { 817 printf("usage: ndp hostname\n"); 818 printf(" ndp -a[nt]\n"); 819 printf(" ndp [-nt] -A wait\n"); 820 printf(" ndp -c[nt]\n"); 821 printf(" ndp -d[nt] hostname\n"); 822 printf(" ndp -f[nt] filename\n"); 823 printf(" ndp -i interface [flags...]\n"); 824 #ifdef SIOCSDEFIFACE_IN6 825 printf(" ndp -I [interface|delete]\n"); 826 #endif 827 printf(" ndp -p\n"); 828 printf(" ndp -r\n"); 829 printf(" ndp -s hostname ether_addr [temp] [proxy]\n"); 830 printf(" ndp -H\n"); 831 printf(" ndp -P\n"); 832 printf(" ndp -R\n"); 833 exit(1); 834 } 835 836 int 837 rtmsg(cmd) 838 int cmd; 839 { 840 static int seq; 841 int rlen; 842 register struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 843 register char *cp = m_rtmsg.m_space; 844 register int l; 845 846 errno = 0; 847 if (cmd == RTM_DELETE) 848 goto doit; 849 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 850 rtm->rtm_flags = flags; 851 rtm->rtm_version = RTM_VERSION; 852 853 switch (cmd) { 854 default: 855 fprintf(stderr, "ndp: internal wrong cmd\n"); 856 exit(1); 857 case RTM_ADD: 858 rtm->rtm_addrs |= RTA_GATEWAY; 859 rtm->rtm_rmx.rmx_expire = expire_time; 860 rtm->rtm_inits = RTV_EXPIRE; 861 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 862 if (rtm->rtm_flags & RTF_ANNOUNCE) { 863 rtm->rtm_flags &= ~RTF_HOST; 864 rtm->rtm_flags |= RTA_NETMASK; 865 } 866 /* FALLTHROUGH */ 867 case RTM_GET: 868 rtm->rtm_addrs |= RTA_DST; 869 } 870 #define NEXTADDR(w, s) \ 871 if (rtm->rtm_addrs & (w)) { \ 872 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 873 874 NEXTADDR(RTA_DST, sin_m); 875 NEXTADDR(RTA_GATEWAY, sdl_m); 876 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 877 NEXTADDR(RTA_NETMASK, so_mask); 878 879 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 880 doit: 881 l = rtm->rtm_msglen; 882 rtm->rtm_seq = ++seq; 883 rtm->rtm_type = cmd; 884 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 885 if (errno != ESRCH || cmd != RTM_DELETE) { 886 perror("writing to routing socket"); 887 return (-1); 888 } 889 } 890 do { 891 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 892 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 893 if (l < 0) 894 (void) fprintf(stderr, "ndp: read from routing socket: %s\n", 895 strerror(errno)); 896 return (0); 897 } 898 899 void 900 ifinfo(argc, argv) 901 int argc; 902 char **argv; 903 { 904 struct in6_ndireq nd; 905 int i, s; 906 char *ifname = argv[0]; 907 u_int32_t newflags; 908 #ifdef IPV6CTL_USETEMPADDR 909 u_int8_t nullbuf[8]; 910 #endif 911 912 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 913 perror("ndp: socket"); 914 exit(1); 915 } 916 bzero(&nd, sizeof(nd)); 917 strcpy(nd.ifname, ifname); 918 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 919 perror("ioctl (SIOCGIFINFO_IN6)"); 920 exit(1); 921 } 922 #define ND nd.ndi 923 newflags = ND.flags; 924 for (i = 1; i < argc; i++) { 925 int clear = 0; 926 char *cp = argv[i]; 927 928 if (*cp == '-') { 929 clear = 1; 930 cp++; 931 } 932 933 #define SETFLAG(s, f) \ 934 do {\ 935 if (strcmp(cp, (s)) == 0) {\ 936 if (clear)\ 937 newflags &= ~(f);\ 938 else\ 939 newflags |= (f);\ 940 }\ 941 } while (0) 942 SETFLAG("nud", ND6_IFF_PERFORMNUD); 943 944 ND.flags = newflags; 945 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 946 perror("ioctl(SIOCSIFINFO_FLAGS)"); 947 exit(1); 948 } 949 #undef SETFLAG 950 } 951 952 printf("linkmtu=%d", ND.linkmtu); 953 printf(", curhlim=%d", ND.chlim); 954 printf(", basereachable=%ds%dms", 955 ND.basereachable / 1000, ND.basereachable % 1000); 956 printf(", reachable=%ds", ND.reachable); 957 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 958 #ifdef IPV6CTL_USETEMPADDR 959 memset(nullbuf, 0, sizeof(nullbuf)); 960 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 961 int j; 962 u_int8_t *rbuf; 963 964 for (i = 0; i < 3; i++) { 965 switch(i) { 966 case 0: 967 printf("\nRandom seed(0): "); 968 rbuf = ND.randomseed0; 969 break; 970 case 1: 971 printf("\nRandom seed(1): "); 972 rbuf = ND.randomseed1; 973 break; 974 case 2: 975 printf("\nRandom ID: "); 976 rbuf = ND.randomid; 977 break; 978 } 979 for (j = 0; j < 8; j++) 980 printf("%02x", rbuf[j]); 981 } 982 } 983 #endif 984 if (ND.flags) { 985 printf("\nFlags: "); 986 if ((ND.flags & ND6_IFF_PERFORMNUD) != 0) 987 printf("PERFORMNUD "); 988 } 989 putc('\n', stdout); 990 #undef ND 991 992 close(s); 993 } 994 995 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 996 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 997 #endif 998 999 void 1000 rtrlist() 1001 { 1002 #ifdef ICMPV6CTL_ND6_DRLIST 1003 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 1004 char *buf; 1005 struct in6_defrouter *p, *ep; 1006 size_t l; 1007 struct timeval time; 1008 1009 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1010 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1011 /*NOTREACHED*/ 1012 } 1013 buf = malloc(l); 1014 if (!buf) { 1015 errx(1, "not enough core"); 1016 /*NOTREACHED*/ 1017 } 1018 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1019 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1020 /*NOTREACHED*/ 1021 } 1022 1023 ep = (struct in6_defrouter *)(buf + l); 1024 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1025 int rtpref; 1026 1027 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1028 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1029 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)) != 0) 1030 strlcpy(host_buf, "?", sizeof(host_buf)); 1031 1032 printf("%s if=%s", host_buf, 1033 if_indextoname(p->if_index, ifix_buf)); 1034 printf(", flags=%s%s", 1035 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1036 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1037 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1038 printf(", pref=%s", rtpref_str[rtpref]); 1039 1040 gettimeofday(&time, 0); 1041 if (p->expire == 0) 1042 printf(", expire=Never\n"); 1043 else 1044 printf(", expire=%s\n", 1045 sec2str(p->expire - time.tv_sec)); 1046 } 1047 free(buf); 1048 #else 1049 struct in6_drlist dr; 1050 int s, i; 1051 struct timeval time; 1052 1053 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1054 perror("ndp: socket"); 1055 exit(1); 1056 } 1057 bzero(&dr, sizeof(dr)); 1058 strcpy(dr.ifname, "lo0"); /* dummy */ 1059 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1060 perror("ioctl (SIOCGDRLST_IN6)"); 1061 exit(1); 1062 } 1063 #define DR dr.defrouter[i] 1064 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1065 struct sockaddr_in6 sin6; 1066 1067 bzero(&sin6, sizeof(sin6)); 1068 sin6.sin6_family = AF_INET6; 1069 sin6.sin6_len = sizeof(sin6); 1070 sin6.sin6_addr = DR.rtaddr; 1071 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1072 sizeof(host_buf), NULL, 0, 1073 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 1074 1075 printf("%s if=%s", host_buf, 1076 if_indextoname(DR.if_index, ifix_buf)); 1077 printf(", flags=%s%s", 1078 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1079 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1080 gettimeofday(&time, 0); 1081 if (DR.expire == 0) 1082 printf(", expire=Never\n"); 1083 else 1084 printf(", expire=%s\n", 1085 sec2str(DR.expire - time.tv_sec)); 1086 } 1087 #undef DR 1088 close(s); 1089 #endif 1090 } 1091 1092 void 1093 plist() 1094 { 1095 #ifdef ICMPV6CTL_ND6_PRLIST 1096 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1097 char *buf; 1098 struct in6_prefix *p, *ep, *n; 1099 struct sockaddr_in6 *advrtr; 1100 size_t l; 1101 struct timeval time; 1102 #ifdef NI_WITHSCOPEID 1103 const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID; 1104 int ninflags = (nflag ? NI_NUMERICHOST : 0) | NI_WITHSCOPEID; 1105 #else 1106 const int niflags = NI_NUMERICHOST; 1107 int ninflags = nflag ? NI_NUMERICHOST : 0; 1108 #endif 1109 char namebuf[NI_MAXHOST]; 1110 1111 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1112 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1113 /*NOTREACHED*/ 1114 } 1115 buf = malloc(l); 1116 if (!buf) { 1117 errx(1, "not enough core"); 1118 /*NOTREACHED*/ 1119 } 1120 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1121 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1122 /*NOTREACHED*/ 1123 } 1124 1125 ep = (struct in6_prefix *)(buf + l); 1126 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1127 advrtr = (struct sockaddr_in6 *)(p + 1); 1128 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1129 1130 if (getnameinfo((struct sockaddr *)&p->prefix, 1131 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1132 NULL, 0, niflags) != 0) 1133 strlcpy(namebuf, "?", sizeof(namebuf)); 1134 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1135 if_indextoname(p->if_index, ifix_buf)); 1136 1137 gettimeofday(&time, 0); 1138 /* 1139 * meaning of fields, especially flags, is very different 1140 * by origin. notify the difference to the users. 1141 */ 1142 printf("flags=%s%s%s%s%s", 1143 p->raflags.onlink ? "L" : "", 1144 p->raflags.autonomous ? "A" : "", 1145 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1146 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1147 #ifdef NDPRF_HOME 1148 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1149 #else 1150 "" 1151 #endif 1152 ); 1153 if (p->vltime == ND6_INFINITE_LIFETIME) 1154 printf(" vltime=infinity"); 1155 else 1156 printf(" vltime=%ld", (long)p->vltime); 1157 if (p->pltime == ND6_INFINITE_LIFETIME) 1158 printf(", pltime=infinity"); 1159 else 1160 printf(", pltime=%ld", (long)p->pltime); 1161 if (p->expire == 0) 1162 printf(", expire=Never"); 1163 else if (p->expire >= time.tv_sec) 1164 printf(", expire=%s", 1165 sec2str(p->expire - time.tv_sec)); 1166 else 1167 printf(", expired"); 1168 printf(", ref=%d", p->refcnt); 1169 printf("\n"); 1170 /* 1171 * "advertising router" list is meaningful only if the prefix 1172 * information is from RA. 1173 */ 1174 if (p->advrtrs) { 1175 int j; 1176 struct sockaddr_in6 *sin6; 1177 1178 sin6 = (struct sockaddr_in6 *)(p + 1); 1179 printf(" advertised by\n"); 1180 for (j = 0; j < p->advrtrs; j++) { 1181 struct in6_nbrinfo *nbi; 1182 1183 if (getnameinfo((struct sockaddr *)sin6, 1184 sin6->sin6_len, namebuf, sizeof(namebuf), 1185 NULL, 0, ninflags) != 0) 1186 strlcpy(namebuf, "?", sizeof(namebuf)); 1187 printf(" %s", namebuf); 1188 1189 nbi = getnbrinfo(&sin6->sin6_addr, p->if_index, 1190 0); 1191 if (nbi) { 1192 switch(nbi->state) { 1193 case ND6_LLINFO_REACHABLE: 1194 case ND6_LLINFO_STALE: 1195 case ND6_LLINFO_DELAY: 1196 case ND6_LLINFO_PROBE: 1197 printf(" (reachable)\n"); 1198 break; 1199 default: 1200 printf(" (unreachable)\n"); 1201 } 1202 } else 1203 printf(" (no neighbor state)\n"); 1204 sin6++; 1205 } 1206 } else 1207 printf(" No advertising router\n"); 1208 } 1209 free(buf); 1210 #else 1211 struct in6_prlist pr; 1212 int s, i; 1213 struct timeval time; 1214 1215 gettimeofday(&time, 0); 1216 1217 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1218 perror("ndp: socket"); 1219 exit(1); 1220 } 1221 bzero(&pr, sizeof(pr)); 1222 strcpy(pr.ifname, "lo0"); /* dummy */ 1223 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1224 perror("ioctl (SIOCGPRLST_IN6)"); 1225 exit(1); 1226 } 1227 #define PR pr.prefix[i] 1228 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1229 struct sockaddr_in6 p6; 1230 char namebuf[NI_MAXHOST]; 1231 int niflags; 1232 1233 #ifdef NDPRF_ONLINK 1234 p6 = PR.prefix; 1235 #else 1236 memset(&p6, 0, sizeof(p6)); 1237 p6.sin6_family = AF_INET6; 1238 p6.sin6_len = sizeof(p6); 1239 p6.sin6_addr = PR.prefix; 1240 #endif 1241 1242 /* 1243 * copy link index to sin6_scope_id field. 1244 * XXX: KAME specific. 1245 */ 1246 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1247 u_int16_t linkid; 1248 1249 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1250 sizeof(linkid)); 1251 linkid = ntohs(linkid); 1252 p6.sin6_scope_id = linkid; 1253 p6.sin6_addr.s6_addr[2] = 0; 1254 p6.sin6_addr.s6_addr[3] = 0; 1255 } 1256 1257 niflags = NI_NUMERICHOST; 1258 #ifdef __KAME__ 1259 niflags |= NI_WITHSCOPEID; 1260 #endif 1261 if (getnameinfo((struct sockaddr *)&p6, 1262 sizeof(p6), namebuf, sizeof(namebuf), 1263 NULL, 0, niflags)) { 1264 warnx("getnameinfo failed"); 1265 continue; 1266 } 1267 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1268 if_indextoname(PR.if_index, ifix_buf)); 1269 1270 gettimeofday(&time, 0); 1271 /* 1272 * meaning of fields, especially flags, is very different 1273 * by origin. notify the difference to the users. 1274 */ 1275 #if 0 1276 printf(" %s", 1277 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1278 #endif 1279 #ifdef NDPRF_ONLINK 1280 printf("flags=%s%s%s%s%s", 1281 PR.raflags.onlink ? "L" : "", 1282 PR.raflags.autonomous ? "A" : "", 1283 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1284 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1285 #ifdef NDPRF_HOME 1286 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1287 #else 1288 "" 1289 #endif 1290 ); 1291 #else 1292 printf("flags=%s%s", 1293 PR.raflags.onlink ? "L" : "", 1294 PR.raflags.autonomous ? "A" : ""); 1295 #endif 1296 if (PR.vltime == ND6_INFINITE_LIFETIME) 1297 printf(" vltime=infinity"); 1298 else 1299 printf(" vltime=%ld", (long)PR.vltime); 1300 if (PR.pltime == ND6_INFINITE_LIFETIME) 1301 printf(", pltime=infinity"); 1302 else 1303 printf(", pltime=%ld", (long)PR.pltime); 1304 if (PR.expire == 0) 1305 printf(", expire=Never"); 1306 else if (PR.expire >= time.tv_sec) 1307 printf(", expire=%s", 1308 sec2str(PR.expire - time.tv_sec)); 1309 else 1310 printf(", expired"); 1311 #ifdef NDPRF_ONLINK 1312 printf(", ref=%d", PR.refcnt); 1313 #endif 1314 #if 0 1315 switch (PR.origin) { 1316 case PR_ORIG_RA: 1317 printf(", origin=RA"); 1318 break; 1319 case PR_ORIG_RR: 1320 printf(", origin=RR"); 1321 break; 1322 case PR_ORIG_STATIC: 1323 printf(", origin=static"); 1324 break; 1325 case PR_ORIG_KERNEL: 1326 printf(", origin=kernel"); 1327 break; 1328 default: 1329 printf(", origin=?"); 1330 break; 1331 } 1332 #endif 1333 printf("\n"); 1334 /* 1335 * "advertising router" list is meaningful only if the prefix 1336 * information is from RA. 1337 */ 1338 if (0 && /* prefix origin is almost obsolted */ 1339 PR.origin != PR_ORIG_RA) 1340 ; 1341 else if (PR.advrtrs) { 1342 int j; 1343 printf(" advertised by\n"); 1344 for (j = 0; j < PR.advrtrs; j++) { 1345 struct sockaddr_in6 sin6; 1346 struct in6_nbrinfo *nbi; 1347 1348 bzero(&sin6, sizeof(sin6)); 1349 sin6.sin6_family = AF_INET6; 1350 sin6.sin6_len = sizeof(sin6); 1351 sin6.sin6_addr = PR.advrtr[j]; 1352 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1353 getnameinfo((struct sockaddr *)&sin6, 1354 sin6.sin6_len, host_buf, 1355 sizeof(host_buf), NULL, 0, 1356 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 1357 printf(" %s", host_buf); 1358 1359 nbi = getnbrinfo(&sin6.sin6_addr, PR.if_index, 1360 0); 1361 if (nbi) { 1362 switch(nbi->state) { 1363 case ND6_LLINFO_REACHABLE: 1364 case ND6_LLINFO_STALE: 1365 case ND6_LLINFO_DELAY: 1366 case ND6_LLINFO_PROBE: 1367 printf(" (reachable)\n"); 1368 break; 1369 default: 1370 printf(" (unreachable)\n"); 1371 } 1372 } else 1373 printf(" (no neighbor state)\n"); 1374 } 1375 if (PR.advrtrs > DRLSTSIZ) 1376 printf(" and %d routers\n", 1377 PR.advrtrs - DRLSTSIZ); 1378 } else 1379 printf(" No advertising router\n"); 1380 } 1381 #undef PR 1382 close(s); 1383 #endif 1384 } 1385 1386 void 1387 pfx_flush() 1388 { 1389 char dummyif[IFNAMSIZ+8]; 1390 int s; 1391 1392 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1393 err(1, "socket"); 1394 strcpy(dummyif, "lo0"); /* dummy */ 1395 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1396 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1397 } 1398 1399 void 1400 rtr_flush() 1401 { 1402 char dummyif[IFNAMSIZ+8]; 1403 int s; 1404 1405 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1406 err(1, "socket"); 1407 strcpy(dummyif, "lo0"); /* dummy */ 1408 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1409 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1410 1411 close(s); 1412 } 1413 1414 void 1415 harmonize_rtr() 1416 { 1417 char dummyif[IFNAMSIZ+8]; 1418 int s; 1419 1420 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1421 err(1, "socket"); 1422 strcpy(dummyif, "lo0"); /* dummy */ 1423 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1424 err(1, "ioctl (SIOCSNDFLUSH_IN6)"); 1425 1426 close(s); 1427 } 1428 1429 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1430 static void 1431 setdefif(ifname) 1432 char *ifname; 1433 { 1434 struct in6_ndifreq ndifreq; 1435 unsigned int ifindex; 1436 1437 if (strcasecmp(ifname, "delete") == 0) 1438 ifindex = 0; 1439 else { 1440 if ((ifindex = if_nametoindex(ifname)) == 0) 1441 err(1, "failed to resolve i/f index for %s", ifname); 1442 } 1443 1444 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1445 err(1, "socket"); 1446 1447 strcpy(ndifreq.ifname, "lo0"); /* dummy */ 1448 ndifreq.ifindex = ifindex; 1449 1450 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1451 err(1, "ioctl (SIOCSDEFIFACE_IN6)"); 1452 1453 close(s); 1454 } 1455 1456 static void 1457 getdefif() 1458 { 1459 struct in6_ndifreq ndifreq; 1460 char ifname[IFNAMSIZ+8]; 1461 1462 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1463 err(1, "socket"); 1464 1465 memset(&ndifreq, 0, sizeof(ndifreq)); 1466 strcpy(ndifreq.ifname, "lo0"); /* dummy */ 1467 1468 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1469 err(1, "ioctl (SIOCGDEFIFACE_IN6)"); 1470 1471 if (ndifreq.ifindex == 0) 1472 printf("No default interface.\n"); 1473 else { 1474 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1475 err(1, "failed to resolve ifname for index %lu", 1476 ndifreq.ifindex); 1477 printf("ND default interface = %s\n", ifname); 1478 } 1479 1480 close(s); 1481 } 1482 #endif 1483 1484 static char * 1485 sec2str(total) 1486 time_t total; 1487 { 1488 static char result[256]; 1489 int days, hours, mins, secs; 1490 int first = 1; 1491 char *p = result; 1492 1493 days = total / 3600 / 24; 1494 hours = (total / 3600) % 24; 1495 mins = (total / 60) % 60; 1496 secs = total % 60; 1497 1498 if (days) { 1499 first = 0; 1500 p += sprintf(p, "%dd", days); 1501 } 1502 if (!first || hours) { 1503 first = 0; 1504 p += sprintf(p, "%dh", hours); 1505 } 1506 if (!first || mins) { 1507 first = 0; 1508 p += sprintf(p, "%dm", mins); 1509 } 1510 sprintf(p, "%ds", secs); 1511 1512 return(result); 1513 } 1514 1515 /* 1516 * Print the timestamp 1517 * from tcpdump/util.c 1518 */ 1519 static void 1520 ts_print(tvp) 1521 const struct timeval *tvp; 1522 { 1523 int s; 1524 1525 /* Default */ 1526 s = (tvp->tv_sec + thiszone) % 86400; 1527 (void)printf("%02d:%02d:%02d.%06u ", 1528 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1529 } 1530