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 static int pid; 117 static int cflag; 118 static int nflag; 119 static int tflag; 120 static int32_t thiszone; /* time difference with gmt */ 121 static int s = -1; 122 static int repeat = 0; 123 124 char ntop_buf[INET6_ADDRSTRLEN]; /* inet_ntop() */ 125 char host_buf[NI_MAXHOST]; /* getnameinfo() */ 126 char ifix_buf[IFNAMSIZ]; /* if_indextoname() */ 127 128 int file(char *); 129 void getsocket(void); 130 int set(int, char **); 131 void get(char *); 132 int delete(char *); 133 void dump(struct in6_addr *); 134 static struct in6_nbrinfo *getnbrinfo(struct in6_addr *addr, 135 int ifindex, int); 136 static char *ether_str(struct sockaddr_dl *); 137 int ndp_ether_aton(char *, u_char *); 138 void usage(void) __dead2; 139 int rtmsg(int); 140 void ifinfo(int, char **); 141 void rtrlist(void); 142 void plist(void); 143 void pfx_flush(void); 144 void rtrlist(void); 145 void rtr_flush(void); 146 void harmonize_rtr(void); 147 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 148 static void getdefif(void); 149 static void setdefif(char *); 150 #endif 151 static char *sec2str(time_t t); 152 static char *ether_str(struct sockaddr_dl *sdl); 153 static void ts_print(const struct timespec *); 154 155 static char *rtpref_str[] = { 156 "medium", /* 00 */ 157 "high", /* 01 */ 158 "rsv", /* 10 */ 159 "low" /* 11 */ 160 }; 161 162 int 163 main(int argc, char **argv) 164 { 165 int ch; 166 int aflag = 0, dflag = 0, sflag = 0, Hflag = 0, 167 pflag = 0, rflag = 0, Pflag = 0, Rflag = 0; 168 169 pid = getpid(); 170 thiszone = gmt2local(0); 171 while ((ch = getopt(argc, argv, "acndfIilprstA:HPR")) != -1) 172 switch ((char)ch) { 173 case 'a': 174 aflag = 1; 175 break; 176 case 'c': 177 cflag = 1; 178 break; 179 case 'd': 180 dflag = 1; 181 break; 182 case 'I': 183 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 184 if (argc > 2) 185 setdefif(argv[2]); 186 getdefif(); /* always call it to print the result */ 187 exit(0); 188 #else 189 errx(1, "not supported yet"); 190 /*NOTREACHED*/ 191 #endif 192 case 'i' : 193 argc -= optind; 194 argv += optind; 195 if (argc < 1) 196 usage(); 197 ifinfo(argc, argv); 198 exit(0); 199 case 'n': 200 nflag = 1; 201 continue; 202 case 'p': 203 pflag = 1; 204 break; 205 case 'f' : 206 if (argc != 3) 207 usage(); 208 file(argv[2]); 209 exit(0); 210 case 'l' : 211 /* obsolete, ignored */ 212 break; 213 case 'r' : 214 rflag = 1; 215 break; 216 case 's': 217 sflag = 1; 218 break; 219 case 't': 220 tflag = 1; 221 break; 222 case 'A': 223 aflag = 1; 224 repeat = atoi(optarg); 225 if (repeat < 0) 226 usage(); 227 break; 228 case 'H' : 229 Hflag = 1; 230 break; 231 case 'P': 232 Pflag = 1; 233 break; 234 case 'R': 235 Rflag = 1; 236 break; 237 default: 238 usage(); 239 } 240 241 argc -= optind; 242 argv += optind; 243 244 if (aflag || cflag) { 245 dump(0); 246 exit(0); 247 } 248 if (dflag) { 249 if (argc != 1) 250 usage(); 251 delete(argv[0]); 252 exit(0); 253 } 254 if (pflag) { 255 plist(); 256 exit(0); 257 } 258 if (rflag) { 259 rtrlist(); 260 exit(0); 261 } 262 if (sflag) { 263 if (argc < 2 || argc > 4) 264 usage(); 265 exit(set(argc, argv) ? 1 : 0); 266 } 267 if (Hflag) { 268 harmonize_rtr(); 269 exit(0); 270 } 271 if (Pflag) { 272 pfx_flush(); 273 exit(0); 274 } 275 if (Rflag) { 276 rtr_flush(); 277 exit(0); 278 } 279 280 if (argc != 1) 281 usage(); 282 get(argv[0]); 283 exit(0); 284 } 285 286 /* 287 * Process a file to set standard ndp entries 288 */ 289 int 290 file(char *name) 291 { 292 FILE *fp; 293 int i, retval; 294 char line[100], arg[5][50], *args[5]; 295 296 if ((fp = fopen(name, "r")) == NULL) { 297 fprintf(stderr, "ndp: cannot open %s\n", name); 298 exit(1); 299 } 300 args[0] = &arg[0][0]; 301 args[1] = &arg[1][0]; 302 args[2] = &arg[2][0]; 303 args[3] = &arg[3][0]; 304 args[4] = &arg[4][0]; 305 retval = 0; 306 while(fgets(line, 100, fp) != NULL) { 307 i = sscanf(line, "%s %s %s %s %s", arg[0], arg[1], arg[2], 308 arg[3], arg[4]); 309 if (i < 2) { 310 fprintf(stderr, "ndp: bad line: %s\n", line); 311 retval = 1; 312 continue; 313 } 314 if (set(i, args)) 315 retval = 1; 316 } 317 fclose(fp); 318 return (retval); 319 } 320 321 void 322 getsocket(void) 323 { 324 if (s < 0) { 325 s = socket(PF_ROUTE, SOCK_RAW, 0); 326 if (s < 0) { 327 perror("ndp: socket"); 328 exit(1); 329 } 330 } 331 } 332 333 struct sockaddr_in6 so_mask = {sizeof(so_mask), AF_INET6 }; 334 struct sockaddr_in6 blank_sin = {sizeof(blank_sin), AF_INET6 }, sin_m; 335 struct sockaddr_dl blank_sdl = {sizeof(blank_sdl), AF_LINK }, sdl_m; 336 int flags, found_entry; 337 time_t expire_time; 338 struct { 339 struct rt_msghdr m_rtm; 340 char m_space[512]; 341 } m_rtmsg; 342 343 /* 344 * Set an individual neighbor cache entry 345 */ 346 int 347 set(int argc, char **argv) 348 { 349 struct sockaddr_in6 *sin = &sin_m; 350 struct sockaddr_dl *sdl; 351 struct rt_msghdr *rtm = &(m_rtmsg.m_rtm); 352 struct addrinfo hints, *res; 353 int gai_error; 354 u_char *ea; 355 char *host = argv[0], *eaddr = argv[1]; 356 357 getsocket(); 358 argc -= 2; 359 argv += 2; 360 sdl_m = blank_sdl; 361 sin_m = blank_sin; 362 363 bzero(&hints, sizeof(hints)); 364 hints.ai_family = AF_INET6; 365 gai_error = getaddrinfo(host, NULL, &hints, &res); 366 if (gai_error) { 367 fprintf(stderr, "ndp: %s: %s\n", host, 368 gai_strerror(gai_error)); 369 return 1; 370 } 371 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 372 #ifdef __KAME__ 373 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 374 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 375 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 376 } 377 #endif 378 ea = (u_char *)LLADDR(&sdl_m); 379 if (ndp_ether_aton(eaddr, ea) == 0) 380 sdl_m.sdl_alen = 6; 381 flags = 0; 382 expire_time = 0; 383 while (argc-- > 0) { 384 if (strncmp(argv[0], "temp", 4) == 0) { 385 struct timespec sp; 386 387 clock_gettime(CLOCK_MONOTONIC, &sp); 388 expire_time = sp.tv_sec + 20 * 60; 389 } else if (strncmp(argv[0], "proxy", 5) == 0) 390 flags |= RTF_ANNOUNCE; 391 argv++; 392 } 393 if (rtmsg(RTM_GET) < 0) { 394 perror(host); 395 return (1); 396 } 397 sin = (struct sockaddr_in6 *)(rtm + 1); 398 sdl = (struct sockaddr_dl *)(RT_ROUNDUP(sin->sin6_len) + (char *)sin); 399 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 400 if (sdl->sdl_family == AF_LINK && 401 (rtm->rtm_flags & RTF_LLINFO) && 402 !(rtm->rtm_flags & RTF_GATEWAY)) switch (sdl->sdl_type) { 403 case IFT_ETHER: case IFT_FDDI: case IFT_ISO88023: 404 case IFT_ISO88024: case IFT_ISO88025: 405 goto overwrite; 406 } 407 /* 408 * IPv4 arp command retries with sin_other = SIN_PROXY here. 409 */ 410 fprintf(stderr, "set: cannot configure a new entry\n"); 411 return 1; 412 } 413 414 overwrite: 415 if (sdl->sdl_family != AF_LINK) { 416 printf("cannot intuit interface index and type for %s\n", host); 417 return (1); 418 } 419 sdl_m.sdl_type = sdl->sdl_type; 420 sdl_m.sdl_index = sdl->sdl_index; 421 return (rtmsg(RTM_ADD)); 422 } 423 424 /* 425 * Display an individual neighbor cache entry 426 */ 427 void 428 get(char *host) 429 { 430 struct sockaddr_in6 *sin = &sin_m; 431 struct addrinfo hints, *res; 432 int gai_error; 433 434 sin_m = blank_sin; 435 bzero(&hints, sizeof(hints)); 436 hints.ai_family = AF_INET6; 437 gai_error = getaddrinfo(host, NULL, &hints, &res); 438 if (gai_error) { 439 fprintf(stderr, "ndp: %s: %s\n", host, 440 gai_strerror(gai_error)); 441 return; 442 } 443 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 444 #ifdef __KAME__ 445 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 446 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 447 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 448 } 449 #endif 450 dump(&sin->sin6_addr); 451 if (found_entry == 0) { 452 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 453 sizeof(host_buf), NULL ,0, 454 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 455 printf("%s (%s) -- no entry\n", host, host_buf); 456 exit(1); 457 } 458 } 459 460 /* 461 * Delete a neighbor cache entry 462 */ 463 int 464 delete(char *host) 465 { 466 struct sockaddr_in6 *sin = &sin_m; 467 struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 468 struct sockaddr_dl *sdl; 469 struct addrinfo hints, *res; 470 int gai_error; 471 472 getsocket(); 473 sin_m = blank_sin; 474 475 bzero(&hints, sizeof(hints)); 476 hints.ai_family = AF_INET6; 477 gai_error = getaddrinfo(host, NULL, &hints, &res); 478 if (gai_error) { 479 fprintf(stderr, "ndp: %s: %s\n", host, 480 gai_strerror(gai_error)); 481 return 1; 482 } 483 sin->sin6_addr = ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr; 484 #ifdef __KAME__ 485 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr)) { 486 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 487 htons(((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id); 488 } 489 #endif 490 if (rtmsg(RTM_GET) < 0) { 491 perror(host); 492 return (1); 493 } 494 sin = (struct sockaddr_in6 *)(rtm + 1); 495 sdl = (struct sockaddr_dl *)(RT_ROUNDUP(sin->sin6_len) + (char *)sin); 496 if (IN6_ARE_ADDR_EQUAL(&sin->sin6_addr, &sin_m.sin6_addr)) { 497 if (sdl->sdl_family == AF_LINK && 498 (rtm->rtm_flags & RTF_LLINFO) && 499 !(rtm->rtm_flags & RTF_GATEWAY)) { 500 goto delete; 501 } 502 /* 503 * IPv4 arp command retries with sin_other = SIN_PROXY here. 504 */ 505 fprintf(stderr, "delete: cannot delete non-NDP entry\n"); 506 return 1; 507 } 508 509 delete: 510 if (sdl->sdl_family != AF_LINK) { 511 printf("cannot locate %s\n", host); 512 return (1); 513 } 514 if (rtmsg(RTM_DELETE) == 0) { 515 struct sockaddr_in6 s6 = *sin; /* XXX: for safety */ 516 517 #ifdef __KAME__ 518 if (IN6_IS_ADDR_LINKLOCAL(&s6.sin6_addr)) { 519 s6.sin6_scope_id = ntohs(*(u_int16_t *)&s6.sin6_addr.s6_addr[2]); 520 *(u_int16_t *)&s6.sin6_addr.s6_addr[2] = 0; 521 } 522 #endif 523 getnameinfo((struct sockaddr *)&s6, 524 s6.sin6_len, host_buf, 525 sizeof(host_buf), NULL, 0, 526 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 527 printf("%s (%s) deleted\n", host, host_buf); 528 } 529 530 return 0; 531 } 532 533 #define W_ADDR 31 534 #define W_LL 17 535 #define W_IF 6 536 537 /* 538 * Dump the entire neighbor cache 539 */ 540 void 541 dump(struct in6_addr *addr) 542 { 543 int mib[6]; 544 size_t needed; 545 char *lim, *buf, *next; 546 struct rt_msghdr *rtm; 547 struct sockaddr_in6 *sin; 548 struct sockaddr_dl *sdl; 549 extern int h_errno; 550 struct in6_nbrinfo *nbi; 551 struct timespec sp; 552 int addrwidth; 553 int llwidth; 554 int ifwidth; 555 char flgbuf[8]; 556 char *ifname; 557 558 /* Print header */ 559 if (!tflag && !cflag) 560 printf("%-*.*s %-*.*s %*.*s %-9.9s %2s %4s %4s\n", 561 W_ADDR, W_ADDR, "Neighbor", W_LL, W_LL, "Linklayer Address", 562 W_IF, W_IF, "Netif", "Expire", "St", "Flgs", "Prbs"); 563 564 again:; 565 mib[0] = CTL_NET; 566 mib[1] = PF_ROUTE; 567 mib[2] = 0; 568 mib[3] = AF_INET6; 569 mib[4] = NET_RT_FLAGS; 570 mib[5] = RTF_LLINFO; 571 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 572 err(1, "sysctl(PF_ROUTE estimate)"); 573 if (needed > 0) { 574 if ((buf = malloc(needed)) == NULL) 575 errx(1, "malloc"); 576 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 577 err(1, "sysctl(PF_ROUTE, NET_RT_FLAGS)"); 578 lim = buf + needed; 579 } else 580 buf = lim = NULL; 581 582 for (next = buf; next && next < lim; next += rtm->rtm_msglen) { 583 int isrouter = 0, prbs = 0; 584 585 rtm = (struct rt_msghdr *)next; 586 sin = (struct sockaddr_in6 *)(rtm + 1); 587 sdl = (struct sockaddr_dl *)((char *)sin + 588 RT_ROUNDUP(sin->sin6_len)); 589 590 /* 591 * Some OSes can produce a route that has the LINK flag but 592 * has a non-AF_LINK gateway (e.g. fe80::xx%lo0 on FreeBSD 593 * and BSD/OS, where xx is not the interface identifier on 594 * lo0). Such routes entry would annoy getnbrinfo() below, 595 * so we skip them. 596 * XXX: such routes should have the GATEWAY flag, not the 597 * LINK flag. However, there are rotten routing software 598 * that advertises all routes that have the GATEWAY flag. 599 * Thus, KAME kernel intentionally does not set the LINK flag. 600 * What is to be fixed is not ndp, but such routing software 601 * (and the kernel workaround)... 602 */ 603 if (sdl->sdl_family != AF_LINK) 604 continue; 605 606 if (addr) { 607 if (!IN6_ARE_ADDR_EQUAL(addr, &sin->sin6_addr)) 608 continue; 609 found_entry = 1; 610 } else if (IN6_IS_ADDR_MULTICAST(&sin->sin6_addr)) 611 continue; 612 if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) || 613 IN6_IS_ADDR_MC_LINKLOCAL(&sin->sin6_addr)) { 614 /* XXX: should scope id be filled in the kernel? */ 615 if (sin->sin6_scope_id == 0) 616 sin->sin6_scope_id = sdl->sdl_index; 617 #ifdef __KAME__ 618 /* KAME specific hack; removed the embedded id */ 619 *(u_int16_t *)&sin->sin6_addr.s6_addr[2] = 0; 620 #endif 621 } 622 getnameinfo((struct sockaddr *)sin, sin->sin6_len, host_buf, 623 sizeof(host_buf), NULL, 0, 624 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 625 if (cflag == 1) { 626 #ifdef RTF_WASCLONED 627 if (rtm->rtm_flags & RTF_WASCLONED) 628 delete(host_buf); 629 #else 630 delete(host_buf); 631 #endif 632 continue; 633 } 634 clock_gettime(CLOCK_MONOTONIC, &sp); 635 if (tflag) 636 ts_print(&sp); 637 638 addrwidth = strlen(host_buf); 639 if (addrwidth < W_ADDR) 640 addrwidth = W_ADDR; 641 llwidth = strlen(ether_str(sdl)); 642 if (W_ADDR + W_LL - addrwidth > llwidth) 643 llwidth = W_ADDR + W_LL - addrwidth; 644 ifname = if_indextoname(sdl->sdl_index, ifix_buf); 645 if (!ifname) 646 ifname = "?"; 647 ifwidth = strlen(ifname); 648 if (W_ADDR + W_LL + W_IF - addrwidth - llwidth > ifwidth) 649 ifwidth = W_ADDR + W_LL + W_IF - addrwidth - llwidth; 650 651 printf("%-*.*s %-*.*s %*.*s", addrwidth, addrwidth, host_buf, 652 llwidth, llwidth, ether_str(sdl), ifwidth, ifwidth, ifname); 653 654 /* Print neighbor discovery specific informations */ 655 nbi = getnbrinfo(&sin->sin6_addr, sdl->sdl_index, 1); 656 if (nbi) { 657 if (nbi->expire > sp.tv_sec) { 658 printf(" %-9.9s", 659 sec2str(nbi->expire - sp.tv_sec)); 660 } else if (nbi->expire == 0) 661 printf(" %-9.9s", "permanent"); 662 else 663 printf(" %-9.9s", "expired"); 664 665 switch(nbi->state) { 666 case ND6_LLINFO_NOSTATE: 667 printf(" N"); 668 break; 669 #ifdef ND6_LLINFO_WAITDELETE 670 case ND6_LLINFO_WAITDELETE: 671 printf(" W"); 672 break; 673 #endif 674 case ND6_LLINFO_INCOMPLETE: 675 printf(" I"); 676 break; 677 case ND6_LLINFO_REACHABLE: 678 printf(" R"); 679 break; 680 case ND6_LLINFO_STALE: 681 printf(" S"); 682 break; 683 case ND6_LLINFO_DELAY: 684 printf(" D"); 685 break; 686 case ND6_LLINFO_PROBE: 687 printf(" P"); 688 break; 689 default: 690 printf(" ?"); 691 break; 692 } 693 694 isrouter = nbi->isrouter; 695 prbs = nbi->asked; 696 } else { 697 warnx("failed to get neighbor information"); 698 printf(" "); 699 } 700 putchar(' '); 701 702 /* 703 * other flags. R: router, P: proxy, W: ?? 704 */ 705 if ((rtm->rtm_addrs & RTA_NETMASK) == 0) { 706 snprintf(flgbuf, sizeof(flgbuf), "%s%s", 707 isrouter ? "R" : "", 708 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 709 } else { 710 sin = (struct sockaddr_in6 *) 711 (sdl->sdl_len + (char *)sdl); 712 snprintf(flgbuf, sizeof(flgbuf), "%s%s%s%s", 713 isrouter ? "R" : "", 714 !IN6_IS_ADDR_UNSPECIFIED(&sin->sin6_addr) 715 ? "P" : "", 716 (sin->sin6_len != sizeof(struct sockaddr_in6)) 717 ? "W" : "", 718 (rtm->rtm_flags & RTF_ANNOUNCE) ? "p" : ""); 719 } 720 printf(" %-4.4s", flgbuf); 721 722 if (prbs) 723 printf(" %4d", prbs); 724 725 printf("\n"); 726 } 727 if (buf != NULL) 728 free(buf); 729 730 if (repeat) { 731 printf("\n"); 732 sleep(repeat); 733 goto again; 734 } 735 } 736 737 static struct in6_nbrinfo * 738 getnbrinfo(struct in6_addr *addr, int ifindex, int warning) 739 { 740 static struct in6_nbrinfo nbi; 741 int s; 742 743 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 744 err(1, "socket"); 745 746 bzero(&nbi, sizeof(nbi)); 747 if_indextoname(ifindex, nbi.ifname); 748 nbi.addr = *addr; 749 if (ioctl(s, SIOCGNBRINFO_IN6, (caddr_t)&nbi) < 0) { 750 if (warning) 751 warn("ioctl(SIOCGNBRINFO_IN6)"); 752 close(s); 753 return(NULL); 754 } 755 756 close(s); 757 return(&nbi); 758 } 759 760 static char * 761 ether_str(struct sockaddr_dl *sdl) 762 { 763 static char ebuf[32]; 764 u_char *cp; 765 766 if (sdl->sdl_alen) { 767 cp = (u_char *)LLADDR(sdl); 768 sprintf(ebuf, "%x:%x:%x:%x:%x:%x", 769 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 770 } else { 771 sprintf(ebuf, "(incomplete)"); 772 } 773 774 return(ebuf); 775 } 776 777 int 778 ndp_ether_aton(char *a, u_char *n) 779 { 780 int i, o[6]; 781 782 i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o[0], &o[1], &o[2], 783 &o[3], &o[4], &o[5]); 784 if (i != 6) { 785 fprintf(stderr, "ndp: invalid Ethernet address '%s'\n", a); 786 return (1); 787 } 788 for (i=0; i<6; i++) 789 n[i] = o[i]; 790 return (0); 791 } 792 793 void 794 usage(void) 795 { 796 printf("usage: ndp hostname\n"); 797 printf(" ndp -a[nt]\n"); 798 printf(" ndp [-nt] -A wait\n"); 799 printf(" ndp -c[nt]\n"); 800 printf(" ndp -d[nt] hostname\n"); 801 printf(" ndp -f[nt] filename\n"); 802 printf(" ndp -i interface [flags...]\n"); 803 #ifdef SIOCSDEFIFACE_IN6 804 printf(" ndp -I [interface|delete]\n"); 805 #endif 806 printf(" ndp -p\n"); 807 printf(" ndp -r\n"); 808 printf(" ndp -s hostname ether_addr [temp] [proxy]\n"); 809 printf(" ndp -H\n"); 810 printf(" ndp -P\n"); 811 printf(" ndp -R\n"); 812 exit(1); 813 } 814 815 int 816 rtmsg(int cmd) 817 { 818 static int seq; 819 int rlen; 820 struct rt_msghdr *rtm = &m_rtmsg.m_rtm; 821 char *cp = m_rtmsg.m_space; 822 int l; 823 824 errno = 0; 825 if (cmd == RTM_DELETE) 826 goto doit; 827 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 828 rtm->rtm_flags = flags; 829 rtm->rtm_version = RTM_VERSION; 830 831 switch (cmd) { 832 default: 833 fprintf(stderr, "ndp: internal wrong cmd\n"); 834 exit(1); 835 case RTM_ADD: 836 rtm->rtm_addrs |= RTA_GATEWAY; 837 rtm->rtm_rmx.rmx_expire = expire_time; 838 rtm->rtm_inits = RTV_EXPIRE; 839 rtm->rtm_flags |= (RTF_HOST | RTF_STATIC); 840 if (rtm->rtm_flags & RTF_ANNOUNCE) { 841 rtm->rtm_flags &= ~RTF_HOST; 842 rtm->rtm_flags |= RTA_NETMASK; 843 } 844 /* FALLTHROUGH */ 845 case RTM_GET: 846 rtm->rtm_addrs |= RTA_DST; 847 } 848 #define NEXTADDR(w, s) \ 849 if (rtm->rtm_addrs & (w)) { \ 850 bcopy((char *)&s, cp, sizeof(s)); cp += RT_ROUNDUP(sizeof(s));} 851 852 NEXTADDR(RTA_DST, sin_m); 853 NEXTADDR(RTA_GATEWAY, sdl_m); 854 memset(&so_mask.sin6_addr, 0xff, sizeof(so_mask.sin6_addr)); 855 NEXTADDR(RTA_NETMASK, so_mask); 856 857 rtm->rtm_msglen = cp - (char *)&m_rtmsg; 858 doit: 859 l = rtm->rtm_msglen; 860 rtm->rtm_seq = ++seq; 861 rtm->rtm_type = cmd; 862 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 863 if (errno != ESRCH || cmd != RTM_DELETE) { 864 perror("writing to routing socket"); 865 return (-1); 866 } 867 } 868 do { 869 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 870 } while (l > 0 && (rtm->rtm_seq != seq || rtm->rtm_pid != pid)); 871 if (l < 0) 872 fprintf(stderr, "ndp: read from routing socket: %s\n", 873 strerror(errno)); 874 return (0); 875 } 876 877 void 878 ifinfo(int argc, char **argv) 879 { 880 struct in6_ndireq nd; 881 int i, s; 882 char *ifname = argv[0]; 883 u_int32_t newflags; 884 #ifdef IPV6CTL_USETEMPADDR 885 u_int8_t nullbuf[8]; 886 #endif 887 888 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 889 perror("ndp: socket"); 890 exit(1); 891 } 892 bzero(&nd, sizeof(nd)); 893 strcpy(nd.ifname, ifname); 894 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) { 895 perror("ioctl (SIOCGIFINFO_IN6)"); 896 exit(1); 897 } 898 #define ND nd.ndi 899 newflags = ND.flags; 900 for (i = 1; i < argc; i++) { 901 int clear = 0; 902 char *cp = argv[i]; 903 904 if (*cp == '-') { 905 clear = 1; 906 cp++; 907 } 908 909 #define SETFLAG(s, f) \ 910 do {\ 911 if (strcmp(cp, (s)) == 0) {\ 912 if (clear)\ 913 newflags &= ~(f);\ 914 else\ 915 newflags |= (f);\ 916 }\ 917 } while (0) 918 SETFLAG("nud", ND6_IFF_PERFORMNUD); 919 #ifdef ND6_IFF_ACCEPT_RTADV 920 SETFLAG("accept_rtadv", ND6_IFF_ACCEPT_RTADV); 921 #endif 922 ND.flags = newflags; 923 if (ioctl(s, SIOCSIFINFO_FLAGS, (caddr_t)&nd) < 0) { 924 perror("ioctl(SIOCSIFINFO_FLAGS)"); 925 exit(1); 926 } 927 #undef SETFLAG 928 } 929 930 printf("linkmtu=%d", ND.linkmtu); 931 printf(", curhlim=%d", ND.chlim); 932 printf(", basereachable=%ds%dms", 933 ND.basereachable / 1000, ND.basereachable % 1000); 934 printf(", reachable=%ds", ND.reachable); 935 printf(", retrans=%ds%dms", ND.retrans / 1000, ND.retrans % 1000); 936 #ifdef IPV6CTL_USETEMPADDR 937 memset(nullbuf, 0, sizeof(nullbuf)); 938 if (memcmp(nullbuf, ND.randomid, sizeof(nullbuf)) != 0) { 939 int j; 940 u_int8_t *rbuf; 941 942 for (i = 0; i < 3; i++) { 943 switch(i) { 944 case 0: 945 printf("\nRandom seed(0): "); 946 rbuf = ND.randomseed0; 947 break; 948 case 1: 949 printf("\nRandom seed(1): "); 950 rbuf = ND.randomseed1; 951 break; 952 case 2: 953 printf("\nRandom ID: "); 954 rbuf = ND.randomid; 955 break; 956 } 957 for (j = 0; j < 8; j++) 958 printf("%02x", rbuf[j]); 959 } 960 } 961 #endif 962 if (ND.flags) { 963 printf("\nFlags: "); 964 if ((ND.flags & ND6_IFF_PERFORMNUD)) 965 printf("nud "); 966 #ifdef ND6_IFF_ACCEPT_RTADV 967 if ((ND.flags & ND6_IFF_ACCEPT_RTADV)) 968 printf("accept_rtadv "); 969 #endif 970 } 971 putc('\n', stdout); 972 #undef ND 973 974 close(s); 975 } 976 977 #ifndef ND_RA_FLAG_RTPREF_MASK /* XXX: just for compilation on *BSD release */ 978 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 979 #endif 980 981 void 982 rtrlist(void) 983 { 984 #ifdef ICMPV6CTL_ND6_DRLIST 985 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_DRLIST }; 986 char *buf; 987 struct in6_defrouter *p, *ep; 988 size_t l; 989 struct timeval time; 990 991 if (sysctl(mib, NELEM(mib), NULL, &l, NULL, 0) < 0) { 992 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 993 /*NOTREACHED*/ 994 } 995 buf = malloc(l); 996 if (!buf) { 997 errx(1, "not enough core"); 998 /*NOTREACHED*/ 999 } 1000 if (sysctl(mib, NELEM(mib), buf, &l, NULL, 0) < 0) { 1001 err(1, "sysctl(ICMPV6CTL_ND6_DRLIST)"); 1002 /*NOTREACHED*/ 1003 } 1004 1005 ep = (struct in6_defrouter *)(buf + l); 1006 for (p = (struct in6_defrouter *)buf; p < ep; p++) { 1007 int rtpref; 1008 1009 if (getnameinfo((struct sockaddr *)&p->rtaddr, 1010 p->rtaddr.sin6_len, host_buf, sizeof(host_buf), NULL, 0, 1011 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)) != 0) 1012 strlcpy(host_buf, "?", sizeof(host_buf)); 1013 1014 printf("%s if=%s", host_buf, 1015 if_indextoname(p->if_index, ifix_buf)); 1016 printf(", flags=%s%s", 1017 p->flags & ND_RA_FLAG_MANAGED ? "M" : "", 1018 p->flags & ND_RA_FLAG_OTHER ? "O" : ""); 1019 rtpref = ((p->flags & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff; 1020 printf(", pref=%s", rtpref_str[rtpref]); 1021 1022 gettimeofday(&time, 0); 1023 if (p->expire == 0) 1024 printf(", expire=Never\n"); 1025 else 1026 printf(", expire=%s\n", 1027 sec2str(p->expire - time.tv_sec)); 1028 } 1029 free(buf); 1030 #else 1031 struct in6_drlist dr; 1032 int s, i; 1033 struct timeval time; 1034 1035 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1036 perror("ndp: socket"); 1037 exit(1); 1038 } 1039 bzero(&dr, sizeof(dr)); 1040 strcpy(dr.ifname, "lo0"); /* dummy */ 1041 if (ioctl(s, SIOCGDRLST_IN6, (caddr_t)&dr) < 0) { 1042 perror("ioctl (SIOCGDRLST_IN6)"); 1043 exit(1); 1044 } 1045 #define DR dr.defrouter[i] 1046 for (i = 0 ; i < DRLSTSIZ && DR.if_index ; i++) { 1047 struct sockaddr_in6 sin6; 1048 1049 bzero(&sin6, sizeof(sin6)); 1050 sin6.sin6_family = AF_INET6; 1051 sin6.sin6_len = sizeof(sin6); 1052 sin6.sin6_addr = DR.rtaddr; 1053 getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, host_buf, 1054 sizeof(host_buf), NULL, 0, 1055 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 1056 1057 printf("%s if=%s", host_buf, 1058 if_indextoname(DR.if_index, ifix_buf)); 1059 printf(", flags=%s%s", 1060 DR.flags & ND_RA_FLAG_MANAGED ? "M" : "", 1061 DR.flags & ND_RA_FLAG_OTHER ? "O" : ""); 1062 gettimeofday(&time, 0); 1063 if (DR.expire == 0) 1064 printf(", expire=Never\n"); 1065 else 1066 printf(", expire=%s\n", 1067 sec2str(DR.expire - time.tv_sec)); 1068 } 1069 #undef DR 1070 close(s); 1071 #endif 1072 } 1073 1074 void 1075 plist(void) 1076 { 1077 #ifdef ICMPV6CTL_ND6_PRLIST 1078 int mib[] = { CTL_NET, PF_INET6, IPPROTO_ICMPV6, ICMPV6CTL_ND6_PRLIST }; 1079 char *buf; 1080 struct in6_prefix *p, *ep, *n; 1081 struct sockaddr_in6 *advrtr; 1082 size_t l; 1083 struct timeval time; 1084 #ifdef NI_WITHSCOPEID 1085 const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID; 1086 int ninflags = (nflag ? NI_NUMERICHOST : 0) | NI_WITHSCOPEID; 1087 #else 1088 const int niflags = NI_NUMERICHOST; 1089 int ninflags = nflag ? NI_NUMERICHOST : 0; 1090 #endif 1091 char namebuf[NI_MAXHOST]; 1092 1093 if (sysctl(mib, NELEM(mib), NULL, &l, NULL, 0) < 0) { 1094 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1095 /*NOTREACHED*/ 1096 } 1097 buf = malloc(l); 1098 if (!buf) { 1099 errx(1, "not enough core"); 1100 /*NOTREACHED*/ 1101 } 1102 if (sysctl(mib, NELEM(mib), buf, &l, NULL, 0) < 0) { 1103 err(1, "sysctl(ICMPV6CTL_ND6_PRLIST)"); 1104 /*NOTREACHED*/ 1105 } 1106 1107 ep = (struct in6_prefix *)(buf + l); 1108 for (p = (struct in6_prefix *)buf; p < ep; p = n) { 1109 advrtr = (struct sockaddr_in6 *)(p + 1); 1110 n = (struct in6_prefix *)&advrtr[p->advrtrs]; 1111 1112 if (getnameinfo((struct sockaddr *)&p->prefix, 1113 p->prefix.sin6_len, namebuf, sizeof(namebuf), 1114 NULL, 0, niflags) != 0) 1115 strlcpy(namebuf, "?", sizeof(namebuf)); 1116 printf("%s/%d if=%s\n", namebuf, p->prefixlen, 1117 if_indextoname(p->if_index, ifix_buf)); 1118 1119 gettimeofday(&time, 0); 1120 /* 1121 * meaning of fields, especially flags, is very different 1122 * by origin. notify the difference to the users. 1123 */ 1124 printf("flags=%s%s%s%s%s", 1125 p->raflags.onlink ? "L" : "", 1126 p->raflags.autonomous ? "A" : "", 1127 (p->flags & NDPRF_ONLINK) != 0 ? "O" : "", 1128 (p->flags & NDPRF_DETACHED) != 0 ? "D" : "", 1129 #ifdef NDPRF_HOME 1130 (p->flags & NDPRF_HOME) != 0 ? "H" : "" 1131 #else 1132 "" 1133 #endif 1134 ); 1135 if (p->vltime == ND6_INFINITE_LIFETIME) 1136 printf(" vltime=infinity"); 1137 else 1138 printf(" vltime=%ld", (long)p->vltime); 1139 if (p->pltime == ND6_INFINITE_LIFETIME) 1140 printf(", pltime=infinity"); 1141 else 1142 printf(", pltime=%ld", (long)p->pltime); 1143 if (p->expire == 0) 1144 printf(", expire=Never"); 1145 else if (p->expire >= time.tv_sec) 1146 printf(", expire=%s", 1147 sec2str(p->expire - time.tv_sec)); 1148 else 1149 printf(", expired"); 1150 printf(", ref=%d", p->refcnt); 1151 printf("\n"); 1152 /* 1153 * "advertising router" list is meaningful only if the prefix 1154 * information is from RA. 1155 */ 1156 if (p->advrtrs) { 1157 int j; 1158 struct sockaddr_in6 *sin6; 1159 1160 sin6 = (struct sockaddr_in6 *)(p + 1); 1161 printf(" advertised by\n"); 1162 for (j = 0; j < p->advrtrs; j++) { 1163 struct in6_nbrinfo *nbi; 1164 1165 if (getnameinfo((struct sockaddr *)sin6, 1166 sin6->sin6_len, namebuf, sizeof(namebuf), 1167 NULL, 0, ninflags) != 0) 1168 strlcpy(namebuf, "?", sizeof(namebuf)); 1169 printf(" %s", namebuf); 1170 1171 nbi = getnbrinfo(&sin6->sin6_addr, p->if_index, 1172 0); 1173 if (nbi) { 1174 switch(nbi->state) { 1175 case ND6_LLINFO_REACHABLE: 1176 case ND6_LLINFO_STALE: 1177 case ND6_LLINFO_DELAY: 1178 case ND6_LLINFO_PROBE: 1179 printf(" (reachable)\n"); 1180 break; 1181 default: 1182 printf(" (unreachable)\n"); 1183 } 1184 } else 1185 printf(" (no neighbor state)\n"); 1186 sin6++; 1187 } 1188 } else 1189 printf(" No advertising router\n"); 1190 } 1191 free(buf); 1192 #else 1193 struct in6_prlist pr; 1194 int s, i; 1195 struct timeval time; 1196 1197 gettimeofday(&time, 0); 1198 1199 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1200 perror("ndp: socket"); 1201 exit(1); 1202 } 1203 bzero(&pr, sizeof(pr)); 1204 strcpy(pr.ifname, "lo0"); /* dummy */ 1205 if (ioctl(s, SIOCGPRLST_IN6, (caddr_t)&pr) < 0) { 1206 perror("ioctl (SIOCGPRLST_IN6)"); 1207 exit(1); 1208 } 1209 #define PR pr.prefix[i] 1210 for (i = 0; i < PRLSTSIZ && PR.if_index ; i++) { 1211 struct sockaddr_in6 p6; 1212 char namebuf[NI_MAXHOST]; 1213 int niflags; 1214 1215 #ifdef NDPRF_ONLINK 1216 p6 = PR.prefix; 1217 #else 1218 memset(&p6, 0, sizeof(p6)); 1219 p6.sin6_family = AF_INET6; 1220 p6.sin6_len = sizeof(p6); 1221 p6.sin6_addr = PR.prefix; 1222 #endif 1223 1224 /* 1225 * copy link index to sin6_scope_id field. 1226 * XXX: KAME specific. 1227 */ 1228 if (IN6_IS_ADDR_LINKLOCAL(&p6.sin6_addr)) { 1229 u_int16_t linkid; 1230 1231 memcpy(&linkid, &p6.sin6_addr.s6_addr[2], 1232 sizeof(linkid)); 1233 linkid = ntohs(linkid); 1234 p6.sin6_scope_id = linkid; 1235 p6.sin6_addr.s6_addr[2] = 0; 1236 p6.sin6_addr.s6_addr[3] = 0; 1237 } 1238 1239 niflags = NI_NUMERICHOST; 1240 #ifdef __KAME__ 1241 niflags |= NI_WITHSCOPEID; 1242 #endif 1243 if (getnameinfo((struct sockaddr *)&p6, 1244 sizeof(p6), namebuf, sizeof(namebuf), 1245 NULL, 0, niflags)) { 1246 warnx("getnameinfo failed"); 1247 continue; 1248 } 1249 printf("%s/%d if=%s\n", namebuf, PR.prefixlen, 1250 if_indextoname(PR.if_index, ifix_buf)); 1251 1252 gettimeofday(&time, 0); 1253 /* 1254 * meaning of fields, especially flags, is very different 1255 * by origin. notify the difference to the users. 1256 */ 1257 #if 0 1258 printf(" %s", 1259 PR.origin == PR_ORIG_RA ? "" : "advertise: "); 1260 #endif 1261 #ifdef NDPRF_ONLINK 1262 printf("flags=%s%s%s%s%s", 1263 PR.raflags.onlink ? "L" : "", 1264 PR.raflags.autonomous ? "A" : "", 1265 (PR.flags & NDPRF_ONLINK) != 0 ? "O" : "", 1266 (PR.flags & NDPRF_DETACHED) != 0 ? "D" : "", 1267 #ifdef NDPRF_HOME 1268 (PR.flags & NDPRF_HOME) != 0 ? "H" : "" 1269 #else 1270 "" 1271 #endif 1272 ); 1273 #else 1274 printf("flags=%s%s", 1275 PR.raflags.onlink ? "L" : "", 1276 PR.raflags.autonomous ? "A" : ""); 1277 #endif 1278 if (PR.vltime == ND6_INFINITE_LIFETIME) 1279 printf(" vltime=infinity"); 1280 else 1281 printf(" vltime=%ld", (long)PR.vltime); 1282 if (PR.pltime == ND6_INFINITE_LIFETIME) 1283 printf(", pltime=infinity"); 1284 else 1285 printf(", pltime=%ld", (long)PR.pltime); 1286 if (PR.expire == 0) 1287 printf(", expire=Never"); 1288 else if (PR.expire >= time.tv_sec) 1289 printf(", expire=%s", 1290 sec2str(PR.expire - time.tv_sec)); 1291 else 1292 printf(", expired"); 1293 #ifdef NDPRF_ONLINK 1294 printf(", ref=%d", PR.refcnt); 1295 #endif 1296 #if 0 1297 switch (PR.origin) { 1298 case PR_ORIG_RA: 1299 printf(", origin=RA"); 1300 break; 1301 case PR_ORIG_RR: 1302 printf(", origin=RR"); 1303 break; 1304 case PR_ORIG_STATIC: 1305 printf(", origin=static"); 1306 break; 1307 case PR_ORIG_KERNEL: 1308 printf(", origin=kernel"); 1309 break; 1310 default: 1311 printf(", origin=?"); 1312 break; 1313 } 1314 #endif 1315 printf("\n"); 1316 /* 1317 * "advertising router" list is meaningful only if the prefix 1318 * information is from RA. 1319 */ 1320 if (0 && /* prefix origin is almost obsolted */ 1321 PR.origin != PR_ORIG_RA) 1322 ; 1323 else if (PR.advrtrs) { 1324 int j; 1325 printf(" advertised by\n"); 1326 for (j = 0; j < PR.advrtrs; j++) { 1327 struct sockaddr_in6 sin6; 1328 struct in6_nbrinfo *nbi; 1329 1330 bzero(&sin6, sizeof(sin6)); 1331 sin6.sin6_family = AF_INET6; 1332 sin6.sin6_len = sizeof(sin6); 1333 sin6.sin6_addr = PR.advrtr[j]; 1334 sin6.sin6_scope_id = PR.if_index; /* XXX */ 1335 getnameinfo((struct sockaddr *)&sin6, 1336 sin6.sin6_len, host_buf, 1337 sizeof(host_buf), NULL, 0, 1338 NI_WITHSCOPEID | (nflag ? NI_NUMERICHOST : 0)); 1339 printf(" %s", host_buf); 1340 1341 nbi = getnbrinfo(&sin6.sin6_addr, PR.if_index, 1342 0); 1343 if (nbi) { 1344 switch(nbi->state) { 1345 case ND6_LLINFO_REACHABLE: 1346 case ND6_LLINFO_STALE: 1347 case ND6_LLINFO_DELAY: 1348 case ND6_LLINFO_PROBE: 1349 printf(" (reachable)\n"); 1350 break; 1351 default: 1352 printf(" (unreachable)\n"); 1353 } 1354 } else 1355 printf(" (no neighbor state)\n"); 1356 } 1357 if (PR.advrtrs > DRLSTSIZ) 1358 printf(" and %d routers\n", 1359 PR.advrtrs - DRLSTSIZ); 1360 } else 1361 printf(" No advertising router\n"); 1362 } 1363 #undef PR 1364 close(s); 1365 #endif 1366 } 1367 1368 void 1369 pfx_flush(void) 1370 { 1371 char dummyif[IFNAMSIZ+8]; 1372 int s; 1373 1374 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1375 err(1, "socket"); 1376 strcpy(dummyif, "lo0"); /* dummy */ 1377 if (ioctl(s, SIOCSPFXFLUSH_IN6, (caddr_t)&dummyif) < 0) 1378 err(1, "ioctl(SIOCSPFXFLUSH_IN6)"); 1379 } 1380 1381 void 1382 rtr_flush(void) 1383 { 1384 char dummyif[IFNAMSIZ+8]; 1385 int s; 1386 1387 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1388 err(1, "socket"); 1389 strcpy(dummyif, "lo0"); /* dummy */ 1390 if (ioctl(s, SIOCSRTRFLUSH_IN6, (caddr_t)&dummyif) < 0) 1391 err(1, "ioctl(SIOCSRTRFLUSH_IN6)"); 1392 1393 close(s); 1394 } 1395 1396 void 1397 harmonize_rtr(void) 1398 { 1399 char dummyif[IFNAMSIZ+8]; 1400 int s; 1401 1402 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1403 err(1, "socket"); 1404 strcpy(dummyif, "lo0"); /* dummy */ 1405 if (ioctl(s, SIOCSNDFLUSH_IN6, (caddr_t)&dummyif) < 0) 1406 err(1, "ioctl (SIOCSNDFLUSH_IN6)"); 1407 1408 close(s); 1409 } 1410 1411 #ifdef SIOCSDEFIFACE_IN6 /* XXX: check SIOCGDEFIFACE_IN6 as well? */ 1412 static void 1413 setdefif(char *ifname) 1414 { 1415 struct in6_ndifreq ndifreq; 1416 unsigned int ifindex; 1417 1418 if (strcasecmp(ifname, "delete") == 0) 1419 ifindex = 0; 1420 else { 1421 if ((ifindex = if_nametoindex(ifname)) == 0) 1422 err(1, "failed to resolve i/f index for %s", ifname); 1423 } 1424 1425 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1426 err(1, "socket"); 1427 1428 strcpy(ndifreq.ifname, "lo0"); /* dummy */ 1429 ndifreq.ifindex = ifindex; 1430 1431 if (ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1432 err(1, "ioctl (SIOCSDEFIFACE_IN6)"); 1433 1434 close(s); 1435 } 1436 1437 static void 1438 getdefif(void) 1439 { 1440 struct in6_ndifreq ndifreq; 1441 char ifname[IFNAMSIZ+8]; 1442 1443 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) 1444 err(1, "socket"); 1445 1446 memset(&ndifreq, 0, sizeof(ndifreq)); 1447 strcpy(ndifreq.ifname, "lo0"); /* dummy */ 1448 1449 if (ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq) < 0) 1450 err(1, "ioctl (SIOCGDEFIFACE_IN6)"); 1451 1452 if (ndifreq.ifindex == 0) 1453 printf("No default interface.\n"); 1454 else { 1455 if ((if_indextoname(ndifreq.ifindex, ifname)) == NULL) 1456 err(1, "failed to resolve ifname for index %lu", 1457 ndifreq.ifindex); 1458 printf("ND default interface = %s\n", ifname); 1459 } 1460 1461 close(s); 1462 } 1463 #endif 1464 1465 static char * 1466 sec2str(time_t total) 1467 { 1468 static char result[256]; 1469 int days, hours, mins, secs; 1470 int first = 1; 1471 char *p = result; 1472 1473 days = total / 3600 / 24; 1474 hours = (total / 3600) % 24; 1475 mins = (total / 60) % 60; 1476 secs = total % 60; 1477 1478 if (days) { 1479 first = 0; 1480 p += sprintf(p, "%dd", days); 1481 } 1482 if (!first || hours) { 1483 first = 0; 1484 p += sprintf(p, "%dh", hours); 1485 } 1486 if (!first || mins) { 1487 first = 0; 1488 p += sprintf(p, "%dm", mins); 1489 } 1490 sprintf(p, "%ds", secs); 1491 1492 return(result); 1493 } 1494 1495 /* 1496 * Print the timestamp 1497 * from tcpdump/util.c 1498 */ 1499 static void 1500 ts_print(const struct timespec *sp) 1501 { 1502 int s; 1503 1504 /* Default */ 1505 s = (sp->tv_sec + thiszone) % 86400; 1506 printf("%02d:%02d:%02d.%06u ", 1507 s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)(sp->tv_nsec / 1000)); 1508 } 1509