1 /* $FreeBSD: src/usr.sbin/ndp/ndp.c,v 1.2.2.6 2003/08/12 16:27:57 ume Exp $ */ 2 /* $DragonFly: src/usr.sbin/ndp/ndp.c,v 1.6 2004/12/30 02:35:24 hsu 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. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 */ 64 65 /* 66 * Based on: 67 * "@(#) Copyright (c) 1984, 1993\n\ 68 * The Regents of the University of California. All rights reserved.\n"; 69 * 70 * "@(#)arp.c 8.2 (Berkeley) 1/2/94"; 71 */ 72 73 /* 74 * ndp - display, set, delete and flush neighbor cache 75 */ 76 77 78 #include <sys/param.h> 79 #include <sys/file.h> 80 #include <sys/ioctl.h> 81 #include <sys/socket.h> 82 #include <sys/sysctl.h> 83 #include <sys/time.h> 84 #include <sys/queue.h> 85 86 #include <net/if.h> 87 #include <net/if_var.h> 88 #include <net/if_dl.h> 89 #include <net/if_types.h> 90 #include <net/route.h> 91 92 #include <netinet/in.h> 93 #include <netinet/if_ether.h> 94 95 #include <netinet/icmp6.h> 96 #include <netinet6/in6_var.h> 97 #include <netinet6/nd6.h> 98 99 #include <arpa/inet.h> 100 101 #include <netdb.h> 102 #include <errno.h> 103 #include <nlist.h> 104 #include <stdio.h> 105 #include <string.h> 106 #include <paths.h> 107 #include <err.h> 108 #include <stdlib.h> 109 #include <fcntl.h> 110 #include <unistd.h> 111 #include "gmt2local.h" 112 113 #ifndef NI_WITHSCOPEID 114 #define NI_WITHSCOPEID 0 115 #endif 116 117 /* packing rule for routing socket */ 118 #define ROUNDUP(a) \ 119 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 120 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 121 122 static int pid; 123 static int cflag; 124 static int nflag; 125 static int tflag; 126 static int32_t thiszone; /* time difference with gmt */ 127 static int s = -1; 128 static int repeat = 0; 129 130 char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 131 char host_buf[NI_MAXHOST]; /* getnameinfo() */ 132 char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 133 134 int main(int, char **); 135 int file(char *); 136 void getsocket(void); 137 int set(int, char **); 138 void get(char *); 139 int delete(char *); 140 void dump(struct in6_addr *); 141 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *addr, 142 int ifindex, int); 143 static char *ether_str(struct sockaddr_dl *); 144 int ndp_ether_aton(char *, u_char *); 145 void usage(void); 146 int rtmsg(int); 147 void ifinfo(int, char **); 148 void rtrlist(void); 149 void plist(void); 150 void pfx_flush(void); 151 void rtrlist(void); 152 void rtr_flush(void); 153 void harmonize_rtr(void); 154 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 155 static void getdefif(void); 156 static void setdefif(char *); 157 #endif 158 static char *sec2str(time_t t); 159 static char *ether_str(struct sockaddr_dl *sdl); 160 static void ts_print(const struct timeval *); 161 162 static char *rtpref_str[] = { 163 "medium", /* 00 */ 164 "high", /* 01 */ 165 "rsv", /* 10 */ 166 "low" /* 11 */ 167 }; 168 169 int 170 main(int argc, char **argv) 171 { 172 int ch; 173 int aflag = 0, dflag = 0, sflag = 0, Hflag = 0, 174 pflag = 0, rflag = 0, Pflag = 0, Rflag = 0; 175 176 pid = getpid(); 177 thiszone = gmt2local(0); 178 while ((ch = getopt(argc, argv, "acndfIilprstA:HPR")) != -1) 179 switch ((char)ch) { 180 case 'a': 181 aflag = 1; 182 break; 183 case 'c': 184 cflag = 1; 185 break; 186 case 'd': 187 dflag = 1; 188 break; 189 case 'I': 190 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 191 if (argc > 2) 192 setdefif(argv[2]); 193 getdefif(); /* always call it to print the result */ 194 exit(0); 195 #else 196 errx(1, "not supported yet"); 197 /*NOTREACHED*/ 198 #endif 199 case 'i' : 200 argc -= optind; 201 argv += optind; 202 if (argc < 1) 203 usage(); 204 ifinfo(argc, argv); 205 exit(0); 206 case 'n': 207 nflag = 1; 208 continue; 209 case 'p': 210 pflag = 1; 211 break; 212 case 'f' : 213 if (argc != 3) 214 usage(); 215 file(argv[2]); 216 exit(0); 217 case 'l' : 218 /* obsolete, ignored */ 219 break; 220 case 'r' : 221 rflag = 1; 222 break; 223 case 's': 224 sflag = 1; 225 break; 226 case 't': 227 tflag = 1; 228 break; 229 case 'A': 230 aflag = 1; 231 repeat = atoi(optarg); 232 if (repeat < 0) 233 usage(); 234 break; 235 case 'H' : 236 Hflag = 1; 237 break; 238 case 'P': 239 Pflag = 1; 240 break; 241 case 'R': 242 Rflag = 1; 243 break; 244 default: 245 usage(); 246 } 247 248 argc -= optind; 249 argv += optind; 250 251 if (aflag || cflag) { 252 dump(0); 253 exit(0); 254 } 255 if (dflag) { 256 if (argc != 1) 257 usage(); 258 delete(argv[0]); 259 exit(0); 260 } 261 if (pflag) { 262 plist(); 263 exit(0); 264 } 265 if (rflag) { 266 rtrlist(); 267 exit(0); 268 } 269 if (sflag) { 270 if (argc < 2 || argc > 4) 271 usage(); 272 exit(set(argc, argv) ? 1 : 0); 273 } 274 if (Hflag) { 275 harmonize_rtr(); 276 exit(0); 277 } 278 if (Pflag) { 279 pfx_flush(); 280 exit(0); 281 } 282 if (Rflag) { 283 rtr_flush(); 284 exit(0); 285 } 286 287 if (argc != 1) 288 usage(); 289 get(argv[0]); 290 exit(0); 291 } 292 293 /* 294 * Process a file to set standard ndp entries 295 */ 296 int 297 file(char *name) 298 { 299 FILE *fp; 300 int i, retval; 301 char line[100], arg[5][50], *args[5]; 302 303 if ((fp = fopen(name, "r")) == NULL) { 304 fprintf(stderr, "ndp: cannot open %s\n", name); 305 exit(1); 306 } 307 args[0] = &arg[0][0]; 308 args[1] = &arg[1][0]; 309 args[2] = &arg[2][0]; 310 args[3] = &arg[3][0]; 311 args[4] = &arg[4][0]; 312 retval = 0; 313 while(fgets(line, 100, fp) != NULL) { 314 i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2], 315 arg[3], arg[4]); 316 if (i < 2) { 317 fprintf(stderr, "ndp: bad line: %s\n", line); 318 retval = 1; 319 continue; 320 } 321 if (set(i, args)) 322 retval = 1; 323 } 324 fclose(fp); 325 return (retval); 326 } 327 328 void 329 getsocket(void) 330 { 331 if (s < 0) { 332 s = socket(PF_ROUTE, SOCK_RAW, 0); 333 if (s < 0) { 334 perror("ndp: socket"); 335 exit(1); 336 } 337 } 338 } 339 340 struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 341 struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 342 struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 343 int expire_time, flags, found_entry; 344 struct { 345 struct rt_msghdr m_rtm; 346 char m_space[512]; 347 } m_rtmsg; 348 349 /* 350 * Set an individual neighbor cache entry 351 */ 352 int 353 set(int argc, char **argv) 354 { 355 struct sockaddr_in6 *sin = &sin_m; 356 struct sockaddr_dl *sdl; 357 struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 358 struct addrinfo hints, *res; 359 int gai_error; 360 u_char *ea; 361 char *host = argv[0], *eaddr = argv[1]; 362 363 getsocket(); 364 argc -= 2; 365 argv += 2; 366 sdl_m = blank_sdl; 367 sin_m = blank_sin; 368 369 bzero(&hints, sizeof(hints)); 370 hints.ai_family = AF_INET6; 371 gai_error = getaddrinfo(host, NULL, &hints, &res); 372 if (gai_error) { 373 fprintf(stderr, "ndp: %s: %s\n", host, 374 gai_strerror(gai_error)); 375 return 1; 376 } 377 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 378 #ifdef __KAME__ 379 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 380 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 381 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 382 } 383 #endif 384 ea = (u_char *)LLADDR(&sdl_m); 385 if (ndp_ether_aton(eaddr, ea) == 0) 386 sdl_m.sdl_alen = 6; 387 flags = expire_time = 0; 388 while (argc-- > 0) { 389 if (strncmp(argv[0], "temp", 4) == 0) { 390 struct timeval time; 391 gettimeofday(&time, 0); 392 expire_time = time.tv_sec + 20 * 60; 393 } else if (strncmp(argv[0], "proxy", 5) == 0) 394 flags |= RTF_ANNOUNCE; 395 argv++; 396 } 397 if (rtmsg(RTM_GET) < 0) { 398 perror(host); 399 return (1); 400 } 401 sin = (struct sockaddr_in6 *)(rtm + 1); 402 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 403 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 404 if (sdl->sdl_family == AF_LINK && 405 (rtm->rtm_flags & RTF_LLINFO) && 406 !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) { 407 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 408 case IFT_ISO88024: case IFT_ISO88025: 409 goto overwrite; 410 } 411 /* 412 * IPv4 arp command retries with sin_other = SIN_PROXY here. 413 */ 414 fprintf(stderr, "set: cannot configure a new entry\n"); 415 return 1; 416 } 417 418 overwrite: 419 if (sdl->sdl_family != AF_LINK) { 420 printf("cannot intuit interface index and type for %s\n", host); 421 return (1); 422 } 423 sdl_m.sdl_type = sdl->sdl_type; 424 sdl_m.sdl_index = sdl->sdl_index; 425 return (rtmsg(RTM_ADD)); 426 } 427 428 /* 429 * Display an individual neighbor cache entry 430 */ 431 void 432 get(char *host) 433 { 434 struct sockaddr_in6 *sin = &sin_m; 435 struct addrinfo hints, *res; 436 int gai_error; 437 438 sin_m = blank_sin; 439 bzero(&hints, sizeof(hints)); 440 hints.ai_family = AF_INET6; 441 gai_error = getaddrinfo(host, NULL, &hints, &res); 442 if (gai_error) { 443 fprintf(stderr, "ndp: %s: %s\n", host, 444 gai_strerror(gai_error)); 445 return; 446 } 447 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 448 #ifdef __KAME__ 449 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 450 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 451 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 452 } 453 #endif 454 dump(&sin->sin6_addr); 455 if (found_entry == 0) { 456 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 457 sizeof(host_buf), NULL ,0, 458 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 459 printf("%s (%s) -- no entry\n", host, host_buf); 460 exit(1); 461 } 462 } 463 464 /* 465 * Delete a neighbor cache entry 466 */ 467 int 468 delete(char *host) 469 { 470 struct sockaddr_in6 *sin = &sin_m; 471 struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 472 struct sockaddr_dl *sdl; 473 struct addrinfo hints, *res; 474 int gai_error; 475 476 getsocket(); 477 sin_m = blank_sin; 478 479 bzero(&hints, sizeof(hints)); 480 hints.ai_family = AF_INET6; 481 gai_error = getaddrinfo(host, NULL, &hints, &res); 482 if (gai_error) { 483 fprintf(stderr, "ndp: %s: %s\n", host, 484 gai_strerror(gai_error)); 485 return 1; 486 } 487 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 488 #ifdef __KAME__ 489 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 490 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 491 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 492 } 493 #endif 494 if (rtmsg(RTM_GET) < 0) { 495 perror(host); 496 return (1); 497 } 498 sin = (struct sockaddr_in6 *)(rtm + 1); 499 sdl = (struct sockaddr_dl *)(ROUNDUP(sin->sin6_len) + (char *)sin); 500 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 501 if (sdl->sdl_family == AF_LINK && 502 (rtm->rtm_flags & RTF_LLINFO) && 503 !(rtm->rtm_flags & RTF_GATEWAY)) { 504 goto delete; 505 } 506 /* 507 * IPv4 arp command retries with sin_other = SIN_PROXY here. 508 */ 509 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 510 return 1; 511 } 512 513 delete: 514 if (sdl->sdl_family != AF_LINK) { 515 printf("cannot locate %s\n", host); 516 return (1); 517 } 518 if (rtmsg(RTM_DELETE) == 0) { 519 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 520 521 #ifdef __KAME__ 522 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 523 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 524 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 525 } 526 #endif 527 getnameinfo((struct sockaddr *)&s6, 528 s6.sin6_len, host_buf, 529 sizeof(host_buf), NULL, 0, 530 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 531 printf("%s (%s) deleted\n", host, host_buf); 532 } 533 534 return 0; 535 } 536 537 #define W_ADDR 31 538 #define W_LL 17 539 #define W_IF 6 540 541 /* 542 * Dump the entire neighbor cache 543 */ 544 void 545 dump(struct in6_addr *addr) 546 { 547 int mib[6]; 548 size_t needed; 549 char *lim, *buf, *next; 550 struct rt_msghdr *rtm; 551 struct sockaddr_in6 *sin; 552 struct sockaddr_dl *sdl; 553 extern int h_errno; 554 struct in6_nbrinfo *nbi; 555 struct timeval time; 556 int addrwidth; 557 int llwidth; 558 int ifwidth; 559 char flgbuf[8]; 560 char *ifname; 561 562 /* Print header */ 563 if (!tflag && !cflag) 564 printf("%-*.*s %-*.*s %*.*s %-9.9s %2s %4s %4s\n", 565 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 566 W_IF, W_IF, "Netif", "Expire", "St", "Flgs", "Prbs"); 567 568 again:; 569 mib[0] = CTL_NET; 570 mib[1] = PF_ROUTE; 571 mib[2] = 0; 572 mib[3] = AF_INET6; 573 mib[4] = NET_RT_FLAGS; 574 mib[5] = RTF_LLINFO; 575 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 576 err(1, "sysctl(PF_ROUTE estimate)"); 577 if (needed > 0) { 578 if ((buf = malloc(needed)) == NULL) 579 errx(1, "malloc"); 580 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 581 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 582 lim = buf + needed; 583 } else 584 buf = lim = NULL; 585 586 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 587 int isrouter = 0, prbs = 0; 588 589 rtm = (struct rt_msghdr *)next; 590 sin = (struct sockaddr_in6 *)(rtm + 1); 591 sdl = (struct sockaddr_dl *)((char *)sin + ROUNDUP(sin->sin6_len)); 592 593 /* 594 * Some OSes can produce a route that has the LINK flag but 595 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 596 * and BSD/OS, where xx is not the interface identifier on 597 * lo0). Such routes entry would annoy getnbrinfo() below, 598 * so we skip them. 599 * XXX: such routes should have the GATEWAY flag, not the 600 * LINK flag. However, there are rotten routing software 601 * that advertises all routes that have the GATEWAY flag. 602 * Thus, KAME kernel intentionally does not set the LINK flag. 603 * What is to be fixed is not ndp, but such routing software 604 * (and the kernel workaround)... 605 */ 606 if (sdl->sdl_family != AF_LINK) 607 continue; 608 609 if (addr) { 610 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 611 continue; 612 found_entry = 1; 613 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 614 continue; 615 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 616 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 617 /* XXX: should scope id be filled in the kernel? */ 618 if (sin->sin6_scope_id == 0) 619 sin->sin6_scope_id = sdl->sdl_index; 620 #ifdef __KAME__ 621 /* KAME specific hack; removed the embedded id */ 622 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 623 #endif 624 } 625 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 626 sizeof(host_buf), NULL, 0, 627 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 628 if (cflag == 1) { 629 #ifdef RTF_WASCLONED 630 if (rtm->rtm_flags & RTF_WASCLONED) 631 delete(host_buf); 632 #else 633 delete(host_buf); 634 #endif 635 continue; 636 } 637 gettimeofday(&time, 0); 638 if (tflag) 639 ts_print(&time); 640 641 addrwidth = strlen(host_buf); 642 if (addrwidth < W_ADDR) 643 addrwidth = W_ADDR; 644 llwidth = strlen(ether_str(sdl)); 645 if (W_ADDR + W_LL - addrwidth > llwidth) 646 llwidth = W_ADDR + W_LL - addrwidth; 647 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 648 if (!ifname) 649 ifname = "?"; 650 ifwidth = strlen(ifname); 651 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 652 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 653 654 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 655 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 656 657 /* Print neighbor discovery specific informations */ 658 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 659 if (nbi) { 660 if (nbi->expire > time.tv_sec) { 661 printf(" %-9.9s", 662 sec2str(nbi->expire - time.tv_sec)); 663 } else if (nbi->expire == 0) 664 printf(" %-9.9s", "permanent"); 665 else 666 printf(" %-9.9s", "expired"); 667 668 switch(nbi->state) { 669 case ND6_LLINFO_NOSTATE: 670 printf(" N"); 671 break; 672 #ifdef ND6_LLINFO_WAITDELETE 673 case ND6_LLINFO_WAITDELETE: 674 printf(" W"); 675 break; 676 #endif 677 case ND6_LLINFO_INCOMPLETE: 678 printf(" I"); 679 break; 680 case ND6_LLINFO_REACHABLE: 681 printf(" R"); 682 break; 683 case ND6_LLINFO_STALE: 684 printf(" S"); 685 break; 686 case ND6_LLINFO_DELAY: 687 printf(" D"); 688 break; 689 case ND6_LLINFO_PROBE: 690 printf(" P"); 691 break; 692 default: 693 printf(" ?"); 694 break; 695 } 696 697 isrouter = nbi->isrouter; 698 prbs = nbi->asked; 699 } else { 700 warnx("failed to get neighbor information"); 701 printf(" "); 702 } 703 putchar(' '); 704 705 /* 706 * other flags. R: router, P: proxy, W: ?? 707 */ 708 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 709 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 710 isrouter ? "R" : "", 711 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 712 } else { 713 sin = (struct sockaddr_in6 *) 714 (sdl->sdl_len + (char *)sdl); 715 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 716 isrouter ? "R" : "", 717 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) 718 ? "P" : "", 719 (sin->sin6_len != sizeof(struct sockaddr_in6)) 720 ? "W" : "", 721 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 722 } 723 printf(" %-4.4s", flgbuf); 724 725 if (prbs) 726 printf(" %4d", prbs); 727 728 printf("\n"); 729 } 730 if (buf != NULL) 731 free(buf); 732 733 if (repeat) { 734 printf("\n"); 735 sleep(repeat); 736 goto again; 737 } 738 } 739 740 static struct in6_nbrinfo * 741 getnbrinfo(struct in6_addr *addr, int ifindex, int warning) 742 { 743 static struct in6_nbrinfo nbi; 744 int s; 745 746 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 747 err(1, "socket"); 748 749 bzero(&nbi, sizeof(nbi)); 750 if_indextoname(ifindex, nbi.ifname); 751 nbi.addr = *addr; 752 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 753 if (warning) 754 warn("ioctl(SIOCGNBRINFO_IN6)"); 755 close(s); 756 return(NULL); 757 } 758 759 close(s); 760 return(&nbi); 761 } 762 763 static char * 764 ether_str(struct sockaddr_dl *sdl) 765 { 766 static char ebuf[32]; 767 u_char *cp; 768 769 if (sdl->sdl_alen) { 770 cp = (u_char *)LLADDR(sdl); 771 sprintf(ebuf, "%x:%x:%x:%x:%x:%x", 772 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 773 } else { 774 sprintf(ebuf, "(incomplete)"); 775 } 776 777 return(ebuf); 778 } 779 780 int 781 ndp_ether_aton(char *a, u_char *n) 782 { 783 int i, o[6]; 784 785 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 786 &o[3], &o[4], &o[5]); 787 if (i != 6) { 788 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 789 return (1); 790 } 791 for (i=0; i<6; i++) 792 n[i] = o[i]; 793 return (0); 794 } 795 796 void 797 usage(void) 798 { 799 printf("usage: ndp hostname\n"); 800 printf(" ndp -a[nt]\n"); 801 printf(" ndp [-nt] -A wait\n"); 802 printf(" ndp -c[nt]\n"); 803 printf(" ndp -d[nt] hostname\n"); 804 printf(" ndp -f[nt] filename\n"); 805 printf(" ndp -i interface [flags...]\n"); 806 #ifdef SIOCSDEFIFACE_IN6 807 printf(" ndp -I [interface|delete]\n"); 808 #endif 809 printf(" ndp -p\n"); 810 printf(" ndp -r\n"); 811 printf(" ndp -s hostname ether_addr [temp] [proxy]\n"); 812 printf(" ndp -H\n"); 813 printf(" ndp -P\n"); 814 printf(" ndp -R\n"); 815 exit(1); 816 } 817 818 int 819 rtmsg(int cmd) 820 { 821 static int seq; 822 int rlen; 823 struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 824 char *cp = m_rtmsg.m_space; 825 int l; 826 827 errno = 0; 828 if (cmd == RTM_DELETE) 829 goto doit; 830 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 831 rtm->rtm_flags = flags; 832 rtm->rtm_version = RTM_VERSION; 833 834 switch (cmd) { 835 default: 836 fprintf(stderr, "ndp: internal wrong cmd\n"); 837 exit(1); 838 case RTM_ADD: 839 rtm->rtm_addrs |= RTA_GATEWAY; 840 rtm->rtm_rmx.rmx_expire = expire_time; 841 rtm->rtm_inits = RTV_EXPIRE; 842 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 843 if (rtm->rtm_flags & RTF_ANNOUNCE) { 844 rtm->rtm_flags &= ~RTF_HOST; 845 rtm->rtm_flags |= RTA_NETMASK; 846 } 847 /* FALLTHROUGH */ 848 case RTM_GET: 849 rtm->rtm_addrs |= RTA_DST; 850 } 851 #define NEXTADDR(w, s) \ 852 if (rtm->rtm_addrs & (w)) { \ 853 bcopy((char *)&s, cp, sizeof(s)); cp += sizeof(s);} 854 855 NEXTADDR(RTA_DST, sin_m); 856 NEXTADDR(RTA_GATEWAY, sdl_m); 857 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 858 NEXTADDR(RTA_NETMASK, so_mask); 859 860 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 861 doit: 862 l = rtm->rtm_msglen; 863 rtm->rtm_seq = ++seq; 864 rtm->rtm_type = cmd; 865 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 866 if (errno != ESRCH || cmd != RTM_DELETE) { 867 perror("writing to routing socket"); 868 return (-1); 869 } 870 } 871 do { 872 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 873 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 874 if (l < 0) 875 fprintf(stderr, "ndp: read from routing socket: %s\n", 876 strerror(errno)); 877 return (0); 878 } 879 880 void 881 ifinfo(int argc, char **argv) 882 { 883 struct in6_ndireq nd; 884 int i, s; 885 char *ifname = argv[0]; 886 u_int32_t newflags; 887 #ifdef IPV6CTL_USETEMPADDR 888 u_int8_t nullbuf[8]; 889 #endif 890 891 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 892 perror("ndp: socket"); 893 exit(1); 894 } 895 bzero(&nd, sizeof(nd)); 896 strcpy(nd.ifname, ifname); 897 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 898 perror("ioctl (SIOCGIFINFO_IN6)"); 899 exit(1); 900 } 901 #define ND nd.ndi 902 newflags = ND.flags; 903 for (i = 1; i < argc; i++) { 904 int clear = 0; 905 char *cp = argv[i]; 906 907 if (*cp == '-') { 908 clear = 1; 909 cp++; 910 } 911 912 #define SETFLAG(s, f) \ 913 do {\ 914 if (strcmp(cp, (s)) == 0) {\ 915 if (clear)\ 916 newflags &= ~(f);\ 917 else\ 918 newflags |= (f);\ 919 }\ 920 } while (0) 921 SETFLAG("nud", ND6_IFF_PERFORMNUD); 922 #ifdef ND6_IFF_ACCEPT_RTADV 923 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 924 #endif 925 ND.flags = newflags; 926 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 927 perror("ioctl(SIOCSIFINFO_FLAGS)"); 928 exit(1); 929 } 930 #undef SETFLAG 931 } 932 933 printf("linkmtu=%d", ND.linkmtu); 934 printf(", curhlim=%d", ND.chlim); 935 printf(", basereachable=%ds%dms", 936 ND.basereachable / 1000, ND.basereachable % 1000); 937 printf(", reachable=%ds", ND.reachable); 938 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 939 #ifdef IPV6CTL_USETEMPADDR 940 memset(nullbuf, 0, sizeof(nullbuf)); 941 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 942 int j; 943 u_int8_t *rbuf; 944 945 for (i = 0; i < 3; i++) { 946 switch(i) { 947 case 0: 948 printf("\nRandom seed(0): "); 949 rbuf = ND.randomseed0; 950 break; 951 case 1: 952 printf("\nRandom seed(1): "); 953 rbuf = ND.randomseed1; 954 break; 955 case 2: 956 printf("\nRandom ID: "); 957 rbuf = ND.randomid; 958 break; 959 } 960 for (j = 0; j < 8; j++) 961 printf("%02x", rbuf[j]); 962 } 963 } 964 #endif 965 if (ND.flags) { 966 printf("\nFlags: "); 967 if ((ND.flags & ND6_IFF_PERFORMNUD)) 968 printf("nud "); 969 #ifdef ND6_IFF_ACCEPT_RTADV 970 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 971 printf("accept_rtadv "); 972 #endif 973 } 974 putc('\n', stdout); 975 #undef ND 976 977 close(s); 978 } 979 980 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 981 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 982 #endif 983 984 void 985 rtrlist(void) 986 { 987 #ifdef ICMPV6CTL_ND6_DRLIST 988 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 989 char *buf; 990 struct in6_defrouter *p, *ep; 991 size_t l; 992 struct timeval time; 993 994 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 995 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 996 /*NOTREACHED*/ 997 } 998 buf = malloc(l); 999 if (!buf) { 1000 errx(1, "not enough core"); 1001 /*NOTREACHED*/ 1002 } 1003 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1004 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1005 /*NOTREACHED*/ 1006 } 1007 1008 ep = (struct in6_defrouter *)(buf + l); 1009 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1010 int rtpref; 1011 1012 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1013 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1014 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)) != 0) 1015 strlcpy(host_buf, "?", sizeof(host_buf)); 1016 1017 printf("%s if=%s", host_buf, 1018 if_indextoname(p->if_index, ifix_buf)); 1019 printf(", flags=%s%s", 1020 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1021 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1022 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1023 printf(", pref=%s", rtpref_str[rtpref]); 1024 1025 gettimeofday(&time, 0); 1026 if (p->expire == 0) 1027 printf(", expire=Never\n"); 1028 else 1029 printf(", expire=%s\n", 1030 sec2str(p->expire - time.tv_sec)); 1031 } 1032 free(buf); 1033 #else 1034 struct in6_drlist dr; 1035 int s, i; 1036 struct timeval time; 1037 1038 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1039 perror("ndp: socket"); 1040 exit(1); 1041 } 1042 bzero(&dr, sizeof(dr)); 1043 strcpy(dr.ifname, "lo0"); /* dummy */ 1044 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1045 perror("ioctl (SIOCGDRLST_IN6)"); 1046 exit(1); 1047 } 1048 #define DR dr.defrouter[i] 1049 for (i = 0 ; DR.if_index && i < DRLSTSIZ ; i++) { 1050 struct sockaddr_in6 sin6; 1051 1052 bzero(&sin6, sizeof(sin6)); 1053 sin6.sin6_family = AF_INET6; 1054 sin6.sin6_len = sizeof(sin6); 1055 sin6.sin6_addr = DR.rtaddr; 1056 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1057 sizeof(host_buf), NULL, 0, 1058 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 1059 1060 printf("%s if=%s", host_buf, 1061 if_indextoname(DR.if_index, ifix_buf)); 1062 printf(", flags=%s%s", 1063 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1064 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1065 gettimeofday(&time, 0); 1066 if (DR.expire == 0) 1067 printf(", expire=Never\n"); 1068 else 1069 printf(", expire=%s\n", 1070 sec2str(DR.expire - time.tv_sec)); 1071 } 1072 #undef DR 1073 close(s); 1074 #endif 1075 } 1076 1077 void 1078 plist(void) 1079 { 1080 #ifdef ICMPV6CTL_ND6_PRLIST 1081 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1082 char *buf; 1083 struct in6_prefix *p, *ep, *n; 1084 struct sockaddr_in6 *advrtr; 1085 size_t l; 1086 struct timeval time; 1087 #ifdef NI_WITHSCOPEID 1088 const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID; 1089 int ninflags = (nflag ? NI_NUMERICHOST : 0) | NI_WITHSCOPEID; 1090 #else 1091 const int niflags = NI_NUMERICHOST; 1092 int ninflags = nflag ? NI_NUMERICHOST : 0; 1093 #endif 1094 char namebuf[NI_MAXHOST]; 1095 1096 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { 1097 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1098 /*NOTREACHED*/ 1099 } 1100 buf = malloc(l); 1101 if (!buf) { 1102 errx(1, "not enough core"); 1103 /*NOTREACHED*/ 1104 } 1105 if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { 1106 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1107 /*NOTREACHED*/ 1108 } 1109 1110 ep = (struct in6_prefix *)(buf + l); 1111 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1112 advrtr = (struct sockaddr_in6 *)(p + 1); 1113 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1114 1115 if (getnameinfo((struct sockaddr *)&p->prefix, 1116 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1117 NULL, 0, niflags) != 0) 1118 strlcpy(namebuf, "?", sizeof(namebuf)); 1119 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1120 if_indextoname(p->if_index, ifix_buf)); 1121 1122 gettimeofday(&time, 0); 1123 /* 1124 * meaning of fields, especially flags, is very different 1125 * by origin. notify the difference to the users. 1126 */ 1127 printf("flags=%s%s%s%s%s", 1128 p->raflags.onlink ? "L" : "", 1129 p->raflags.autonomous ? "A" : "", 1130 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1131 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1132 #ifdef NDPRF_HOME 1133 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1134 #else 1135 "" 1136 #endif 1137 ); 1138 if (p->vltime == ND6_INFINITE_LIFETIME) 1139 printf(" vltime=infinity"); 1140 else 1141 printf(" vltime=%ld", (long)p->vltime); 1142 if (p->pltime == ND6_INFINITE_LIFETIME) 1143 printf(", pltime=infinity"); 1144 else 1145 printf(", pltime=%ld", (long)p->pltime); 1146 if (p->expire == 0) 1147 printf(", expire=Never"); 1148 else if (p->expire >= time.tv_sec) 1149 printf(", expire=%s", 1150 sec2str(p->expire - time.tv_sec)); 1151 else 1152 printf(", expired"); 1153 printf(", ref=%d", p->refcnt); 1154 printf("\n"); 1155 /* 1156 * "advertising router" list is meaningful only if the prefix 1157 * information is from RA. 1158 */ 1159 if (p->advrtrs) { 1160 int j; 1161 struct sockaddr_in6 *sin6; 1162 1163 sin6 = (struct sockaddr_in6 *)(p + 1); 1164 printf(" advertised by\n"); 1165 for (j = 0; j < p->advrtrs; j++) { 1166 struct in6_nbrinfo *nbi; 1167 1168 if (getnameinfo((struct sockaddr *)sin6, 1169 sin6->sin6_len, namebuf, sizeof(namebuf), 1170 NULL, 0, ninflags) != 0) 1171 strlcpy(namebuf, "?", sizeof(namebuf)); 1172 printf(" %s", namebuf); 1173 1174 nbi = getnbrinfo(&sin6->sin6_addr, p->if_index, 1175 0); 1176 if (nbi) { 1177 switch(nbi->state) { 1178 case ND6_LLINFO_REACHABLE: 1179 case ND6_LLINFO_STALE: 1180 case ND6_LLINFO_DELAY: 1181 case ND6_LLINFO_PROBE: 1182 printf(" (reachable)\n"); 1183 break; 1184 default: 1185 printf(" (unreachable)\n"); 1186 } 1187 } else 1188 printf(" (no neighbor state)\n"); 1189 sin6++; 1190 } 1191 } else 1192 printf(" No advertising router\n"); 1193 } 1194 free(buf); 1195 #else 1196 struct in6_prlist pr; 1197 int s, i; 1198 struct timeval time; 1199 1200 gettimeofday(&time, 0); 1201 1202 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1203 perror("ndp: socket"); 1204 exit(1); 1205 } 1206 bzero(&pr, sizeof(pr)); 1207 strcpy(pr.ifname, "lo0"); /* dummy */ 1208 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1209 perror("ioctl (SIOCGPRLST_IN6)"); 1210 exit(1); 1211 } 1212 #define PR pr.prefix[i] 1213 for (i = 0; PR.if_index && i < PRLSTSIZ ; i++) { 1214 struct sockaddr_in6 p6; 1215 char namebuf[NI_MAXHOST]; 1216 int niflags; 1217 1218 #ifdef NDPRF_ONLINK 1219 p6 = PR.prefix; 1220 #else 1221 memset(&p6, 0, sizeof(p6)); 1222 p6.sin6_family = AF_INET6; 1223 p6.sin6_len = sizeof(p6); 1224 p6.sin6_addr = PR.prefix; 1225 #endif 1226 1227 /* 1228 * copy link index to sin6_scope_id field. 1229 * XXX: KAME specific. 1230 */ 1231 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1232 u_int16_t linkid; 1233 1234 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1235 sizeof(linkid)); 1236 linkid = ntohs(linkid); 1237 p6.sin6_scope_id = linkid; 1238 p6.sin6_addr.s6_addr[2] = 0; 1239 p6.sin6_addr.s6_addr[3] = 0; 1240 } 1241 1242 niflags = NI_NUMERICHOST; 1243 #ifdef __KAME__ 1244 niflags |= NI_WITHSCOPEID; 1245 #endif 1246 if (getnameinfo((struct sockaddr *)&p6, 1247 sizeof(p6), namebuf, sizeof(namebuf), 1248 NULL, 0, niflags)) { 1249 warnx("getnameinfo failed"); 1250 continue; 1251 } 1252 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1253 if_indextoname(PR.if_index, ifix_buf)); 1254 1255 gettimeofday(&time, 0); 1256 /* 1257 * meaning of fields, especially flags, is very different 1258 * by origin. notify the difference to the users. 1259 */ 1260 #if 0 1261 printf(" %s", 1262 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1263 #endif 1264 #ifdef NDPRF_ONLINK 1265 printf("flags=%s%s%s%s%s", 1266 PR.raflags.onlink ? "L" : "", 1267 PR.raflags.autonomous ? "A" : "", 1268 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1269 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1270 #ifdef NDPRF_HOME 1271 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1272 #else 1273 "" 1274 #endif 1275 ); 1276 #else 1277 printf("flags=%s%s", 1278 PR.raflags.onlink ? "L" : "", 1279 PR.raflags.autonomous ? "A" : ""); 1280 #endif 1281 if (PR.vltime == ND6_INFINITE_LIFETIME) 1282 printf(" vltime=infinity"); 1283 else 1284 printf(" vltime=%ld", (long)PR.vltime); 1285 if (PR.pltime == ND6_INFINITE_LIFETIME) 1286 printf(", pltime=infinity"); 1287 else 1288 printf(", pltime=%ld", (long)PR.pltime); 1289 if (PR.expire == 0) 1290 printf(", expire=Never"); 1291 else if (PR.expire >= time.tv_sec) 1292 printf(", expire=%s", 1293 sec2str(PR.expire - time.tv_sec)); 1294 else 1295 printf(", expired"); 1296 #ifdef NDPRF_ONLINK 1297 printf(", ref=%d", PR.refcnt); 1298 #endif 1299 #if 0 1300 switch (PR.origin) { 1301 case PR_ORIG_RA: 1302 printf(", origin=RA"); 1303 break; 1304 case PR_ORIG_RR: 1305 printf(", origin=RR"); 1306 break; 1307 case PR_ORIG_STATIC: 1308 printf(", origin=static"); 1309 break; 1310 case PR_ORIG_KERNEL: 1311 printf(", origin=kernel"); 1312 break; 1313 default: 1314 printf(", origin=?"); 1315 break; 1316 } 1317 #endif 1318 printf("\n"); 1319 /* 1320 * "advertising router" list is meaningful only if the prefix 1321 * information is from RA. 1322 */ 1323 if (0 && /* prefix origin is almost obsolted */ 1324 PR.origin != PR_ORIG_RA) 1325 ; 1326 else if (PR.advrtrs) { 1327 int j; 1328 printf(" advertised by\n"); 1329 for (j = 0; j < PR.advrtrs; j++) { 1330 struct sockaddr_in6 sin6; 1331 struct in6_nbrinfo *nbi; 1332 1333 bzero(&sin6, sizeof(sin6)); 1334 sin6.sin6_family = AF_INET6; 1335 sin6.sin6_len = sizeof(sin6); 1336 sin6.sin6_addr = PR.advrtr[j]; 1337 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1338 getnameinfo((struct sockaddr *)&sin6, 1339 sin6.sin6_len, host_buf, 1340 sizeof(host_buf), NULL, 0, 1341 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 1342 printf(" %s", host_buf); 1343 1344 nbi = getnbrinfo(&sin6.sin6_addr, PR.if_index, 1345 0); 1346 if (nbi) { 1347 switch(nbi->state) { 1348 case ND6_LLINFO_REACHABLE: 1349 case ND6_LLINFO_STALE: 1350 case ND6_LLINFO_DELAY: 1351 case ND6_LLINFO_PROBE: 1352 printf(" (reachable)\n"); 1353 break; 1354 default: 1355 printf(" (unreachable)\n"); 1356 } 1357 } else 1358 printf(" (no neighbor state)\n"); 1359 } 1360 if (PR.advrtrs > DRLSTSIZ) 1361 printf(" and %d routers\n", 1362 PR.advrtrs - DRLSTSIZ); 1363 } else 1364 printf(" No advertising router\n"); 1365 } 1366 #undef PR 1367 close(s); 1368 #endif 1369 } 1370 1371 void 1372 pfx_flush(void) 1373 { 1374 char dummyif[IFNAMSIZ+8]; 1375 int s; 1376 1377 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1378 err(1, "socket"); 1379 strcpy(dummyif, "lo0"); /* dummy */ 1380 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1381 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1382 } 1383 1384 void 1385 rtr_flush(void) 1386 { 1387 char dummyif[IFNAMSIZ+8]; 1388 int s; 1389 1390 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1391 err(1, "socket"); 1392 strcpy(dummyif, "lo0"); /* dummy */ 1393 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1394 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1395 1396 close(s); 1397 } 1398 1399 void 1400 harmonize_rtr(void) 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, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1409 err(1, "ioctl (SIOCSNDFLUSH_IN6)"); 1410 1411 close(s); 1412 } 1413 1414 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1415 static void 1416 setdefif(char *ifname) 1417 { 1418 struct in6_ndifreq ndifreq; 1419 unsigned int ifindex; 1420 1421 if (strcasecmp(ifname, "delete") == 0) 1422 ifindex = 0; 1423 else { 1424 if ((ifindex = if_nametoindex(ifname)) == 0) 1425 err(1, "failed to resolve i/f index for %s", ifname); 1426 } 1427 1428 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1429 err(1, "socket"); 1430 1431 strcpy(ndifreq.ifname, "lo0"); /* dummy */ 1432 ndifreq.ifindex = ifindex; 1433 1434 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1435 err(1, "ioctl (SIOCSDEFIFACE_IN6)"); 1436 1437 close(s); 1438 } 1439 1440 static void 1441 getdefif(void) 1442 { 1443 struct in6_ndifreq ndifreq; 1444 char ifname[IFNAMSIZ+8]; 1445 1446 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1447 err(1, "socket"); 1448 1449 memset(&ndifreq, 0, sizeof(ndifreq)); 1450 strcpy(ndifreq.ifname, "lo0"); /* dummy */ 1451 1452 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1453 err(1, "ioctl (SIOCGDEFIFACE_IN6)"); 1454 1455 if (ndifreq.ifindex == 0) 1456 printf("No default interface.\n"); 1457 else { 1458 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1459 err(1, "failed to resolve ifname for index %lu", 1460 ndifreq.ifindex); 1461 printf("ND default interface = %s\n", ifname); 1462 } 1463 1464 close(s); 1465 } 1466 #endif 1467 1468 static char * 1469 sec2str(time_t total) 1470 { 1471 static char result[256]; 1472 int days, hours, mins, secs; 1473 int first = 1; 1474 char *p = result; 1475 1476 days = total / 3600 / 24; 1477 hours = (total / 3600) % 24; 1478 mins = (total / 60) % 60; 1479 secs = total % 60; 1480 1481 if (days) { 1482 first = 0; 1483 p += sprintf(p, "%dd", days); 1484 } 1485 if (!first || hours) { 1486 first = 0; 1487 p += sprintf(p, "%dh", hours); 1488 } 1489 if (!first || mins) { 1490 first = 0; 1491 p += sprintf(p, "%dm", mins); 1492 } 1493 sprintf(p, "%ds", secs); 1494 1495 return(result); 1496 } 1497 1498 /* 1499 * Print the timestamp 1500 * from tcpdump/util.c 1501 */ 1502 static void 1503 ts_print(const struct timeval *tvp) 1504 { 1505 int s; 1506 1507 /* Default */ 1508 s = (tvp->tv_sec + thiszone) % 86400; 1509 printf("%02d:%02d:%02d.%06u ", 1510 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tvp->tv_usec); 1511 } 1512