1 /* $NetBSD: route.c,v 1.151 2015/03/23 18:33:17 roy Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1989, 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1991, 1993\ 35 The Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)route.c 8.6 (Berkeley) 4/28/95"; 41 #else 42 __RCSID("$NetBSD: route.c,v 1.151 2015/03/23 18:33:17 roy Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/file.h> 48 #include <sys/socket.h> 49 #include <sys/ioctl.h> 50 #include <sys/mbuf.h> 51 #include <sys/sysctl.h> 52 53 #include <net/if.h> 54 #include <net/route.h> 55 #include <net/if_dl.h> 56 #include <net80211/ieee80211_netbsd.h> 57 #include <netinet/in.h> 58 #include <netatalk/at.h> 59 #include <netmpls/mpls.h> 60 #include <arpa/inet.h> 61 #include <netdb.h> 62 63 #include <errno.h> 64 #include <unistd.h> 65 #include <stdio.h> 66 #include <ctype.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <time.h> 70 #include <paths.h> 71 #include <err.h> 72 73 #include "keywords.h" 74 #include "extern.h" 75 #include "prog_ops.h" 76 #include "rtutil.h" 77 78 union sockunion { 79 struct sockaddr sa; 80 struct sockaddr_in sin; 81 #ifdef INET6 82 struct sockaddr_in6 sin6; 83 #endif 84 struct sockaddr_at sat; 85 struct sockaddr_dl sdl; 86 #ifndef SMALL 87 struct sockaddr_mpls smpls; 88 #endif /* SMALL */ 89 struct sockaddr_storage sstorage; 90 }; 91 92 typedef union sockunion *sup; 93 94 struct sou { 95 union sockunion *so_dst, *so_gate, *so_mask, *so_genmask, *so_ifa, 96 *so_ifp, *so_mpls; 97 }; 98 99 static const char *route_strerror(int); 100 static void set_metric(const char *, int); 101 static int newroute(int, char *const *); 102 static void inet_makenetandmask(u_int32_t, struct sockaddr_in *, struct sou *); 103 #ifdef INET6 104 static int inet6_makenetandmask(const struct sockaddr_in6 *, struct sou *); 105 #endif 106 static int getaddr(int, const char *, struct hostent **, struct sou *); 107 static int flushroutes(int, char *const [], int); 108 static char *netmask_string(const struct sockaddr *, int, int); 109 static int prefixlen(const char *, struct sou *); 110 #ifndef SMALL 111 static void interfaces(void); 112 __dead static void monitor(void); 113 static int print_getmsg(struct rt_msghdr *, int, struct sou *); 114 static const char *linkstate(struct if_msghdr *); 115 static sup readtag(sup, const char *); 116 static void addtag(sup, const char *, int); 117 #endif /* SMALL */ 118 static int rtmsg(int, int, struct sou *); 119 static void mask_addr(struct sou *); 120 static void print_rtmsg(struct rt_msghdr *, int); 121 static void pmsg_common(struct rt_msghdr *); 122 static void pmsg_addrs(const char *, int); 123 static void bprintf(FILE *, int, const char *); 124 static void sodump(sup, const char *); 125 static void sockaddr(const char *, struct sockaddr *); 126 127 int pid, rtm_addrs; 128 int sock; 129 int forcehost, forcenet, doflush, af; 130 int iflag, Lflag, nflag, qflag, tflag, Sflag, Tflag; 131 int verbose, aflen = sizeof(struct sockaddr_in), rtag; 132 int locking, lockrest, debugonly, shortoutput; 133 struct rt_metrics rt_metrics; 134 int rtm_inits; 135 short ns_nullh[] = {0,0,0}; 136 short ns_bh[] = {-1,-1,-1}; 137 138 static const char opts[] = "dfLnqSsTtv"; 139 140 void 141 usage(const char *cp) 142 { 143 144 if (cp) 145 warnx("botched keyword: %s", cp); 146 (void)fprintf(stderr, 147 "Usage: %s [-%s] cmd [[-<qualifers>] args]\n", getprogname(), opts); 148 exit(1); 149 /* NOTREACHED */ 150 } 151 152 #define PRIETHER "02x:%02x:%02x:%02x:%02x:%02x" 153 #define PRIETHER_ARGS(__enaddr) (__enaddr)[0], (__enaddr)[1], (__enaddr)[2], \ 154 (__enaddr)[3], (__enaddr)[4], (__enaddr)[5] 155 156 int 157 main(int argc, char * const *argv) 158 { 159 int ch; 160 161 if (argc < 2) 162 usage(NULL); 163 164 while ((ch = getopt(argc, argv, opts)) != -1) 165 switch (ch) { 166 case 'd': 167 debugonly = 1; 168 break; 169 case 'f': 170 doflush = 1; 171 break; 172 case 'L': 173 Lflag = RT_LFLAG; 174 break; 175 case 'n': 176 nflag = RT_NFLAG; 177 break; 178 case 'q': 179 qflag = 1; 180 break; 181 case 'S': 182 Sflag = 1; 183 break; 184 case 's': 185 shortoutput = 1; 186 break; 187 case 'T': 188 Tflag = RT_TFLAG; 189 break; 190 case 't': 191 tflag = 1; 192 break; 193 case 'v': 194 verbose = RT_VFLAG; 195 break; 196 case '?': 197 default: 198 usage(NULL); 199 /*NOTREACHED*/ 200 } 201 argc -= optind; 202 argv += optind; 203 204 if (prog_init && prog_init() == -1) 205 err(1, "init failed"); 206 207 pid = prog_getpid(); 208 if (tflag) 209 sock = prog_open("/dev/null", O_WRONLY, 0); 210 else 211 sock = prog_socket(PF_ROUTE, SOCK_RAW, 0); 212 if (sock < 0) 213 err(EXIT_FAILURE, "socket"); 214 215 if (*argv == NULL) { 216 if (doflush) 217 ch = K_FLUSH; 218 else 219 goto no_cmd; 220 } else 221 ch = keyword(*argv); 222 223 switch (ch) { 224 #ifndef SMALL 225 case K_GET: 226 #endif /* SMALL */ 227 case K_CHANGE: 228 case K_ADD: 229 case K_DELETE: 230 if (doflush) 231 (void)flushroutes(1, argv, 0); 232 return newroute(argc, argv); 233 234 case K_SHOW: 235 show(argc, argv, Lflag|nflag|Tflag|verbose); 236 return 0; 237 238 #ifndef SMALL 239 case K_MONITOR: 240 monitor(); 241 return 0; 242 243 #endif /* SMALL */ 244 case K_FLUSH: 245 return flushroutes(argc, argv, 0); 246 247 case K_FLUSHALL: 248 return flushroutes(argc, argv, 1); 249 no_cmd: 250 default: 251 usage(*argv); 252 /*NOTREACHED*/ 253 } 254 } 255 256 static char * 257 netmask_string(const struct sockaddr *mask, int len, int family) 258 { 259 static char smask[INET6_ADDRSTRLEN]; 260 struct sockaddr_in nsin; 261 struct sockaddr_in6 nsin6; 262 263 if (len >= 0) 264 snprintf(smask, sizeof(smask), "%d", len); 265 else { 266 switch (family) { 267 case AF_INET: 268 memset(&nsin, 0, sizeof(nsin)); 269 memcpy(&nsin, mask, mask->sa_len); 270 snprintf(smask, sizeof(smask), "%s", 271 inet_ntoa(nsin.sin_addr)); 272 break; 273 case AF_INET6: 274 memset(&nsin6, 0, sizeof(nsin6)); 275 memcpy(&nsin6, mask, mask->sa_len); 276 inet_ntop(family, &nsin6.sin6_addr, smask, 277 sizeof(smask)); 278 break; 279 default: 280 snprintf(smask, sizeof(smask), "%s", any_ntoa(mask)); 281 } 282 } 283 284 return smask; 285 } 286 /* 287 * Purge all entries in the routing tables not 288 * associated with network interfaces. 289 */ 290 static int 291 flushroutes(int argc, char * const argv[], int doall) 292 { 293 struct sockaddr *sa; 294 size_t needed; 295 int flags, mib[6], rlen, seqno; 296 char *buf, *next, *lim; 297 const char *afname; 298 struct rt_msghdr *rtm; 299 300 flags = 0; 301 af = AF_UNSPEC; 302 /* Don't want to read back our messages */ 303 prog_shutdown(sock, SHUT_RD); 304 parse_show_opts(argc, argv, &af, &flags, &afname, false); 305 mib[0] = CTL_NET; 306 mib[1] = PF_ROUTE; 307 mib[2] = 0; /* protocol */ 308 mib[3] = 0; /* wildcard address family */ 309 mib[4] = NET_RT_DUMP; 310 mib[5] = 0; /* no flags */ 311 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 312 err(EXIT_FAILURE, "route-sysctl-estimate"); 313 buf = lim = NULL; 314 if (needed) { 315 if ((buf = malloc(needed)) == NULL) 316 err(EXIT_FAILURE, "malloc"); 317 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 318 err(EXIT_FAILURE, "actual retrieval of routing table"); 319 lim = buf + needed; 320 } 321 if (verbose) { 322 (void)printf("Examining routing table from sysctl\n"); 323 if (af != AF_UNSPEC) 324 printf("(address family %s)\n", afname); 325 } 326 if (needed == 0) 327 return 0; 328 seqno = 0; /* ??? */ 329 for (next = buf; next < lim; next += rtm->rtm_msglen) { 330 rtm = (struct rt_msghdr *)next; 331 sa = (struct sockaddr *)(rtm + 1); 332 if (verbose) 333 print_rtmsg(rtm, rtm->rtm_msglen); 334 if ((rtm->rtm_flags & flags) != flags) 335 continue; 336 if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC | 337 RTF_LLINFO)) && !doall) 338 continue; 339 #if defined(__minix) 340 /* 341 * MINIX3 only: routes with the RTF_LOCAL flag are immutable, 342 * so do not try to delete them. 343 */ 344 if (rtm->rtm_flags & RTF_LOCAL) 345 continue; 346 #endif /* defined(__minix) */ 347 if (af != AF_UNSPEC && sa->sa_family != af) 348 continue; 349 if (debugonly) 350 continue; 351 rtm->rtm_type = RTM_DELETE; 352 rtm->rtm_seq = seqno; 353 if ((rlen = prog_write(sock, next, 354 rtm->rtm_msglen)) < 0) { 355 warnx("writing to routing socket: %s", 356 route_strerror(errno)); 357 return 1; 358 } 359 if (rlen < (int)rtm->rtm_msglen) { 360 warnx("write to routing socket, got %d for rlen", rlen); 361 return 1; 362 } 363 seqno++; 364 if (qflag) 365 continue; 366 if (verbose) 367 print_rtmsg(rtm, rlen); 368 else { 369 (void)printf("%-20.20s ", netname(sa, NULL, nflag)); 370 sa = (struct sockaddr *)(RT_ROUNDUP(sa->sa_len) + 371 (char *)sa); 372 (void)printf("%-20.20s ", routename(sa, nflag)); 373 (void)printf("done\n"); 374 } 375 } 376 free(buf); 377 return 0; 378 } 379 380 static const char * 381 route_strerror(int error) 382 { 383 384 switch (error) { 385 case ESRCH: 386 return "not in table"; 387 case EBUSY: 388 return "entry in use"; 389 case ENOBUFS: 390 return "routing table overflow"; 391 default: 392 return strerror(error); 393 } 394 } 395 396 static void 397 set_metric(const char *value, int key) 398 { 399 int flag = 0; 400 uint64_t noval, *valp = &noval; 401 402 switch (key) { 403 #define caseof(x, y, z) \ 404 case x: valp = (uint64_t *)&rt_metrics.z; flag = y; break 405 caseof(K_MTU, RTV_MTU, rmx_mtu); 406 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 407 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 408 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 409 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 410 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 411 caseof(K_RTT, RTV_RTT, rmx_rtt); 412 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 413 } 414 rtm_inits |= flag; 415 if (lockrest || locking) 416 rt_metrics.rmx_locks |= flag; 417 if (locking) 418 locking = 0; 419 *valp = strtoul(value, NULL, 0); 420 } 421 422 static int 423 newroute(int argc, char *const *argv) 424 { 425 const char *cmd, *dest = "", *gateway = ""; 426 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 427 int key; 428 struct hostent *hp = 0; 429 struct sou sou, *soup = &sou; 430 431 sou.so_dst = calloc(1, sizeof(union sockunion)); 432 sou.so_gate = calloc(1, sizeof(union sockunion)); 433 sou.so_mask = calloc(1, sizeof(union sockunion)); 434 sou.so_genmask = calloc(1, sizeof(union sockunion)); 435 sou.so_ifa = calloc(1, sizeof(union sockunion)); 436 sou.so_ifp = calloc(1, sizeof(union sockunion)); 437 sou.so_mpls = calloc(1, sizeof(union sockunion)); 438 439 if (sou.so_dst == NULL || sou.so_gate == NULL || sou.so_mask == NULL || 440 sou.so_genmask == NULL || sou.so_ifa == NULL || sou.so_ifp == NULL || 441 sou.so_mpls == NULL) 442 errx(EXIT_FAILURE, "Cannot allocate memory"); 443 444 cmd = argv[0]; 445 af = AF_UNSPEC; 446 if (*cmd != 'g') { 447 /* Don't want to read back our messages */ 448 prog_shutdown(sock, SHUT_RD); 449 } 450 while (--argc > 0) { 451 if (**(++argv)== '-') { 452 switch (key = keyword(1 + *argv)) { 453 454 case K_SA: 455 af = PF_ROUTE; 456 aflen = sizeof(union sockunion); 457 break; 458 459 #ifndef SMALL 460 case K_ATALK: 461 af = AF_APPLETALK; 462 aflen = sizeof(struct sockaddr_at); 463 break; 464 #endif 465 466 case K_INET: 467 af = AF_INET; 468 aflen = sizeof(struct sockaddr_in); 469 break; 470 471 #ifdef INET6 472 case K_INET6: 473 af = AF_INET6; 474 aflen = sizeof(struct sockaddr_in6); 475 break; 476 #endif 477 478 case K_LINK: 479 af = AF_LINK; 480 aflen = sizeof(struct sockaddr_dl); 481 break; 482 483 #ifndef SMALL 484 case K_MPLS: 485 af = AF_MPLS; 486 aflen = sizeof(struct sockaddr_mpls); 487 break; 488 case K_TAG: 489 if (!--argc) 490 usage(1+*argv); 491 af = AF_MPLS; 492 aflen = sizeof(struct sockaddr_mpls); 493 (void)getaddr(RTA_TAG, *++argv, 0, soup); 494 break; 495 #endif /* SMALL */ 496 497 case K_IFACE: 498 case K_INTERFACE: 499 iflag++; 500 break; 501 case K_NOSTATIC: 502 flags &= ~RTF_STATIC; 503 break; 504 case K_LLINFO: 505 flags |= RTF_LLINFO; 506 break; 507 case K_LOCK: 508 locking = 1; 509 break; 510 case K_LOCKREST: 511 lockrest = 1; 512 break; 513 case K_HOST: 514 forcehost++; 515 break; 516 case K_REJECT: 517 flags |= RTF_REJECT; 518 break; 519 case K_NOREJECT: 520 flags &= ~RTF_REJECT; 521 break; 522 case K_BLACKHOLE: 523 flags |= RTF_BLACKHOLE; 524 break; 525 case K_NOBLACKHOLE: 526 flags &= ~RTF_BLACKHOLE; 527 break; 528 case K_CLONED: 529 flags |= RTF_CLONED; 530 break; 531 case K_NOCLONED: 532 flags &= ~RTF_CLONED; 533 break; 534 case K_PROTO1: 535 flags |= RTF_PROTO1; 536 break; 537 case K_PROTO2: 538 flags |= RTF_PROTO2; 539 break; 540 case K_PROXY: 541 flags |= RTF_ANNOUNCE; 542 break; 543 case K_CLONING: 544 flags |= RTF_CLONING; 545 break; 546 case K_NOCLONING: 547 flags &= ~RTF_CLONING; 548 break; 549 case K_XRESOLVE: 550 flags |= RTF_XRESOLVE; 551 break; 552 case K_STATIC: 553 flags |= RTF_STATIC; 554 break; 555 case K_IFA: 556 if (!--argc) 557 usage(1+*argv); 558 (void)getaddr(RTA_IFA, *++argv, 0, soup); 559 break; 560 case K_IFP: 561 if (!--argc) 562 usage(1+*argv); 563 (void)getaddr(RTA_IFP, *++argv, 0, soup); 564 break; 565 case K_GENMASK: 566 if (!--argc) 567 usage(1+*argv); 568 (void)getaddr(RTA_GENMASK, *++argv, 0, soup); 569 break; 570 case K_GATEWAY: 571 if (!--argc) 572 usage(1+*argv); 573 (void)getaddr(RTA_GATEWAY, *++argv, 0, soup); 574 break; 575 case K_DST: 576 if (!--argc) 577 usage(1+*argv); 578 ishost = getaddr(RTA_DST, *++argv, &hp, soup); 579 dest = *argv; 580 break; 581 case K_NETMASK: 582 if (!--argc) 583 usage(1+*argv); 584 (void)getaddr(RTA_NETMASK, *++argv, 0, soup); 585 /* FALLTHROUGH */ 586 case K_NET: 587 forcenet++; 588 break; 589 case K_PREFIXLEN: 590 if (!--argc) 591 usage(1+*argv); 592 ishost = prefixlen(*++argv, soup); 593 break; 594 case K_MTU: 595 case K_HOPCOUNT: 596 case K_EXPIRE: 597 case K_RECVPIPE: 598 case K_SENDPIPE: 599 case K_SSTHRESH: 600 case K_RTT: 601 case K_RTTVAR: 602 if (!--argc) 603 usage(1+*argv); 604 set_metric(*++argv, key); 605 break; 606 default: 607 usage(1+*argv); 608 } 609 } else { 610 if ((rtm_addrs & RTA_DST) == 0) { 611 dest = *argv; 612 ishost = getaddr(RTA_DST, *argv, &hp, soup); 613 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 614 gateway = *argv; 615 (void)getaddr(RTA_GATEWAY, *argv, &hp, soup); 616 } else { 617 ret = atoi(*argv); 618 619 if (ret == 0) { 620 if (strcmp(*argv, "0") == 0) { 621 if (!qflag) { 622 warnx("%s, %s", 623 "old usage of trailing 0", 624 "assuming route to if"); 625 } 626 } else 627 usage(NULL); 628 iflag = 1; 629 continue; 630 } else if (ret > 0 && ret < 10) { 631 if (!qflag) { 632 warnx("%s, %s", 633 "old usage of trailing digit", 634 "assuming route via gateway"); 635 } 636 iflag = 0; 637 continue; 638 } 639 (void)getaddr(RTA_NETMASK, *argv, 0, soup); 640 } 641 } 642 } 643 if ((rtm_addrs & RTA_DST) == 0) 644 errx(EXIT_FAILURE, "missing destination specification"); 645 if (*cmd == 'a' && (rtm_addrs & RTA_GATEWAY) == 0) 646 errx(EXIT_FAILURE, "missing gateway specification"); 647 if (forcehost && forcenet) 648 errx(EXIT_FAILURE, "-host and -net conflict"); 649 else if (forcehost) 650 ishost = 1; 651 else if (forcenet) 652 ishost = 0; 653 flags |= RTF_UP; 654 if (ishost) 655 flags |= RTF_HOST; 656 if (iflag == 0) 657 flags |= RTF_GATEWAY; 658 for (attempts = 1; ; attempts++) { 659 errno = 0; 660 if ((ret = rtmsg(*cmd, flags, soup)) == 0) 661 break; 662 if (errno != ENETUNREACH && errno != ESRCH) 663 break; 664 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 665 hp->h_addr_list++; 666 memmove(&soup->so_gate->sin.sin_addr, hp->h_addr_list[0], 667 hp->h_length); 668 } else 669 break; 670 } 671 if (*cmd == 'g') 672 return ret != 0; 673 if (!qflag) { 674 oerrno = errno; 675 (void)printf("%s %s %s", cmd, ishost? "host" : "net", dest); 676 if (*gateway) { 677 (void)printf(": gateway %s", gateway); 678 if (attempts > 1 && ret == 0 && af == AF_INET) 679 (void)printf(" (%s)", 680 inet_ntoa(soup->so_gate->sin.sin_addr)); 681 } 682 if (ret == 0) 683 (void)printf("\n"); 684 else 685 (void)printf(": %s\n", route_strerror(oerrno)); 686 } 687 free(sou.so_dst); 688 free(sou.so_gate); 689 free(sou.so_mask); 690 free(sou.so_genmask); 691 free(sou.so_ifa); 692 free(sou.so_ifp); 693 free(sou.so_mpls); 694 695 return ret != 0; 696 } 697 698 static void 699 inet_makenetandmask(const u_int32_t net, struct sockaddr_in * const isin, 700 struct sou *soup) 701 { 702 struct sockaddr_in *sin; 703 u_int32_t addr, mask = 0; 704 char *cp; 705 706 rtm_addrs |= RTA_NETMASK; 707 if (net == 0) 708 mask = addr = 0; 709 else if (net < 128) { 710 addr = net << IN_CLASSA_NSHIFT; 711 mask = IN_CLASSA_NET; 712 } else if (net < 192) { 713 addr = net << IN_CLASSA_NSHIFT; 714 mask = IN_CLASSB_NET; 715 } else if (net < 224) { 716 addr = net << IN_CLASSA_NSHIFT; 717 mask = IN_CLASSC_NET; 718 } else if (net < 256) { 719 addr = net << IN_CLASSA_NSHIFT; 720 mask = IN_CLASSD_NET; 721 } else if (net < 49152) { /* 192 * 256 */ 722 addr = net << IN_CLASSB_NSHIFT; 723 mask = IN_CLASSB_NET; 724 } else if (net < 57344) { /* 224 * 256 */ 725 addr = net << IN_CLASSB_NSHIFT; 726 mask = IN_CLASSC_NET; 727 } else if (net < 65536) { 728 addr = net << IN_CLASSB_NSHIFT; 729 mask = IN_CLASSB_NET; 730 } else if (net < 14680064L) { /* 224 * 65536 */ 731 addr = net << IN_CLASSC_NSHIFT; 732 mask = IN_CLASSC_NET; 733 } else if (net < 16777216L) { 734 addr = net << IN_CLASSC_NSHIFT; 735 mask = IN_CLASSD_NET; 736 } else { 737 addr = net; 738 if ((addr & IN_CLASSA_HOST) == 0) 739 mask = IN_CLASSA_NET; 740 else if ((addr & IN_CLASSB_HOST) == 0) 741 mask = IN_CLASSB_NET; 742 else if ((addr & IN_CLASSC_HOST) == 0) 743 mask = IN_CLASSC_NET; 744 else 745 mask = -1; 746 } 747 isin->sin_addr.s_addr = htonl(addr); 748 sin = &soup->so_mask->sin; 749 sin->sin_addr.s_addr = htonl(mask); 750 sin->sin_len = 0; 751 sin->sin_family = 0; 752 cp = (char *)(&sin->sin_addr + 1); 753 while (*--cp == 0 && cp > (char *)sin) 754 ; 755 sin->sin_len = 1 + cp - (char *)sin; 756 sin->sin_family = AF_INET; 757 } 758 759 #ifdef INET6 760 /* 761 * XXX the function may need more improvement... 762 */ 763 static int 764 inet6_makenetandmask(const struct sockaddr_in6 * const sin6, struct sou *soup) 765 { 766 const char *plen; 767 struct in6_addr in6; 768 769 plen = NULL; 770 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 771 sin6->sin6_scope_id == 0) { 772 plen = "0"; 773 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 774 /* aggregatable global unicast - RFC2374 */ 775 memset(&in6, 0, sizeof(in6)); 776 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 777 plen = "64"; 778 } 779 780 if (!plen || strcmp(plen, "128") == 0) 781 return 1; 782 else { 783 rtm_addrs |= RTA_NETMASK; 784 (void)prefixlen(plen, soup); 785 return 0; 786 } 787 } 788 #endif 789 790 /* 791 * Interpret an argument as a network address of some kind, 792 * returning 1 if a host address, 0 if a network address. 793 */ 794 static int 795 getaddr(int which, const char *s, struct hostent **hpp, struct sou *soup) 796 { 797 sup su; 798 struct hostent *hp; 799 struct netent *np; 800 u_int32_t val; 801 char *t; 802 int afamily; /* local copy of af so we can change it */ 803 804 if (af == AF_UNSPEC) { 805 af = AF_INET; 806 aflen = sizeof(struct sockaddr_in); 807 } 808 afamily = af; 809 rtm_addrs |= which; 810 switch (which) { 811 case RTA_DST: 812 su = soup->so_dst; 813 break; 814 case RTA_GATEWAY: 815 su = soup->so_gate; 816 break; 817 case RTA_NETMASK: 818 su = soup->so_mask; 819 break; 820 case RTA_GENMASK: 821 su = soup->so_genmask; 822 break; 823 case RTA_IFP: 824 su = soup->so_ifp; 825 afamily = AF_LINK; 826 break; 827 case RTA_IFA: 828 su = soup->so_ifa; 829 su->sa.sa_family = af; 830 break; 831 #ifndef SMALL 832 case RTA_TAG: 833 su = soup->so_mpls; 834 afamily = AF_MPLS; 835 break; 836 #endif 837 default: 838 su = NULL; 839 usage("Internal Error"); 840 /*NOTREACHED*/ 841 } 842 su->sa.sa_len = aflen; 843 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 844 if (strcmp(s, "default") == 0) { 845 switch (which) { 846 case RTA_DST: 847 forcenet++; 848 (void)getaddr(RTA_NETMASK, s, 0, soup); 849 break; 850 case RTA_NETMASK: 851 case RTA_GENMASK: 852 su->sa.sa_len = 0; 853 } 854 return 0; 855 } 856 switch (afamily) { 857 #ifdef INET6 858 case AF_INET6: 859 { 860 struct addrinfo hints, *res; 861 char *slash = 0; 862 863 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 864 *slash = '\0'; 865 memset(&hints, 0, sizeof(hints)); 866 hints.ai_family = afamily; /*AF_INET6*/ 867 hints.ai_flags = AI_NUMERICHOST; 868 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 869 if (getaddrinfo(s, "0", &hints, &res) != 0) { 870 hints.ai_flags = 0; 871 if (slash) { 872 *slash = '/'; 873 slash = 0; 874 } 875 if (getaddrinfo(s, "0", &hints, &res) != 0) 876 errx(EXIT_FAILURE, "%s: bad value", s); 877 } 878 if (slash) 879 *slash = '/'; 880 if (sizeof(su->sin6) != res->ai_addrlen) 881 errx(EXIT_FAILURE, "%s: bad value", s); 882 if (res->ai_next) { 883 errx(EXIT_FAILURE, 884 "%s: address resolved to multiple values", s); 885 } 886 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 887 freeaddrinfo(res); 888 inet6_putscopeid(&su->sin6, INET6_IS_ADDR_LINKLOCAL| 889 INET6_IS_ADDR_MC_LINKLOCAL); 890 if (hints.ai_flags == AI_NUMERICHOST) { 891 if (slash) 892 return prefixlen(slash + 1, soup); 893 if (which == RTA_DST) 894 return inet6_makenetandmask(&su->sin6, soup); 895 return 0; 896 } else 897 return 1; 898 } 899 #endif 900 901 case PF_ROUTE: 902 su->sa.sa_len = sizeof(*su); 903 sockaddr(s, &su->sa); 904 return 1; 905 906 #ifndef SMALL 907 case AF_APPLETALK: 908 t = strchr (s, '.'); 909 if (!t) { 910 badataddr: 911 errx(EXIT_FAILURE, "bad address: %s", s); 912 } 913 val = atoi (s); 914 if (val > 65535) 915 goto badataddr; 916 su->sat.sat_addr.s_net = val; 917 val = atoi (t); 918 if (val > 256) 919 goto badataddr; 920 su->sat.sat_addr.s_node = val; 921 rtm_addrs |= RTA_NETMASK; 922 return(forcehost || su->sat.sat_addr.s_node != 0); 923 case AF_MPLS: 924 if (which == RTA_DST) 925 soup->so_dst = readtag(su, s); 926 else if (which == RTA_TAG) 927 soup->so_mpls = readtag(su, s); 928 else 929 errx(EXIT_FAILURE, "MPLS can be used only as " 930 "DST or TAG"); 931 return 1; 932 #endif 933 934 case AF_LINK: 935 link_addr(s, &su->sdl); 936 return 1; 937 938 case AF_INET: 939 default: 940 break; 941 } 942 943 if (hpp == NULL) 944 hpp = &hp; 945 *hpp = NULL; 946 947 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 948 *t = '\0'; 949 if (forcenet == 0) { 950 if ((val = inet_addr(s)) != INADDR_NONE) { 951 inet_makenetandmask(htonl(val), &su->sin, soup); 952 return prefixlen(&t[1], soup); 953 } 954 } else { 955 if ((val = inet_network(s)) != INADDR_NONE) { 956 inet_makenetandmask(val, &su->sin, soup); 957 return prefixlen(&t[1], soup); 958 } 959 } 960 *t = '/'; 961 } 962 if (inet_aton(s, &su->sin.sin_addr) && 963 (which != RTA_DST || forcenet == 0)) { 964 val = su->sin.sin_addr.s_addr; 965 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 966 return 1; 967 else { 968 val = ntohl(val); 969 goto netdone; 970 } 971 } 972 if ((val = inet_network(s)) != INADDR_NONE || 973 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 974 netdone: 975 if (which == RTA_DST) 976 inet_makenetandmask(val, &su->sin, soup); 977 return 0; 978 } 979 hp = gethostbyname(s); 980 if (hp) { 981 *hpp = hp; 982 su->sin.sin_family = hp->h_addrtype; 983 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 984 return 1; 985 } 986 errx(EXIT_FAILURE, "%s: bad value", s); 987 /*NOTREACHED*/ 988 } 989 990 #ifndef SMALL 991 static sup 992 readtag(sup su, const char *s) 993 { 994 char *p, *n, *norig; 995 int mplssize = 0; 996 sup retsu = su; 997 998 n = strdup(s); 999 if (n == NULL) 1000 errx(EXIT_FAILURE, "%s: Cannot allocate memory", s); 1001 norig = n; 1002 for (uint i = 0; i < strlen(n); i++) 1003 if(n[i] == ',') 1004 mplssize++; 1005 1006 #define MPLS_NEW_SIZE (sizeof(struct sockaddr_mpls) + \ 1007 mplssize * sizeof(union mpls_shim)) 1008 1009 if (mplssize != 0 && sizeof(union sockunion) < MPLS_NEW_SIZE) { 1010 free(su); 1011 retsu = malloc(MPLS_NEW_SIZE); 1012 retsu->smpls.smpls_family = AF_MPLS; 1013 } 1014 retsu->smpls.smpls_len = MPLS_NEW_SIZE; 1015 mplssize = 0; 1016 while ((p = strchr(n, ',')) != NULL) { 1017 p[0] = '\0'; 1018 addtag(retsu, n, mplssize); 1019 n = p + 1; 1020 mplssize++; 1021 } 1022 addtag(retsu, n, mplssize); 1023 1024 free(norig); 1025 return retsu; 1026 } 1027 1028 static void 1029 addtag(sup su, const char *s, int where) 1030 { 1031 union mpls_shim *ms = &su->smpls.smpls_addr; 1032 1033 if (atoi(s) < 0 || atoi(s) >= (1 << 20)) 1034 errx(EXIT_FAILURE, "%s: Bad tag", s); 1035 ms[where].s_addr = 0; 1036 ms[where].shim.label = atoi(s); 1037 ms[where].s_addr = htonl(ms[where].s_addr); 1038 } 1039 #endif /* SMALL */ 1040 1041 int 1042 prefixlen(const char *s, struct sou *soup) 1043 { 1044 int max, len = atoi(s); 1045 #ifdef INET6 1046 int q, r; 1047 #endif 1048 1049 switch (af) { 1050 case AF_INET: 1051 max = sizeof(struct in_addr) * 8; 1052 break; 1053 #ifdef INET6 1054 case AF_INET6: 1055 max = sizeof(struct in6_addr) * 8; 1056 break; 1057 #endif 1058 default: 1059 errx(EXIT_FAILURE, "prefixlen is not supported with af %d", af); 1060 /*NOTREACHED*/ 1061 } 1062 1063 rtm_addrs |= RTA_NETMASK; 1064 if (len < -1 || len > max) 1065 errx(EXIT_FAILURE, "%s: bad value", s); 1066 1067 #ifdef INET6 1068 q = len >> 3; 1069 r = len & 7; 1070 #endif 1071 switch (af) { 1072 case AF_INET: 1073 memset(soup->so_mask, 0, sizeof(*soup->so_mask)); 1074 soup->so_mask->sin.sin_family = AF_INET; 1075 soup->so_mask->sin.sin_len = sizeof(struct sockaddr_in); 1076 soup->so_mask->sin.sin_addr.s_addr = (len == 0 ? 0 1077 : htonl(0xffffffff << (32 - len))); 1078 break; 1079 #ifdef INET6 1080 case AF_INET6: 1081 soup->so_mask->sin6.sin6_family = AF_INET6; 1082 soup->so_mask->sin6.sin6_len = sizeof(struct sockaddr_in6); 1083 memset(&soup->so_mask->sin6.sin6_addr, 0, 1084 sizeof(soup->so_mask->sin6.sin6_addr)); 1085 if (q > 0) 1086 memset(&soup->so_mask->sin6.sin6_addr, 0xff, q); 1087 if (r > 0) 1088 *((u_char *)&soup->so_mask->sin6.sin6_addr + q) = 1089 (0xff00 >> r) & 0xff; 1090 break; 1091 #endif 1092 } 1093 return len == max; 1094 } 1095 1096 #ifndef SMALL 1097 static void 1098 interfaces(void) 1099 { 1100 size_t needed; 1101 int mib[6]; 1102 char *buf, *lim, *next; 1103 struct rt_msghdr *rtm; 1104 1105 mib[0] = CTL_NET; 1106 mib[1] = PF_ROUTE; 1107 mib[2] = 0; /* protocol */ 1108 mib[3] = 0; /* wildcard address family */ 1109 mib[4] = NET_RT_IFLIST; 1110 mib[5] = 0; /* no flags */ 1111 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1112 err(EXIT_FAILURE, "route-sysctl-estimate"); 1113 if (needed) { 1114 if ((buf = malloc(needed)) == NULL) 1115 err(EXIT_FAILURE, "malloc"); 1116 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 1117 err(EXIT_FAILURE, 1118 "actual retrieval of interface table"); 1119 } 1120 lim = buf + needed; 1121 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1122 rtm = (struct rt_msghdr *)next; 1123 print_rtmsg(rtm, rtm->rtm_msglen); 1124 } 1125 free(buf); 1126 } 1127 } 1128 1129 static void 1130 monitor(void) 1131 { 1132 int n; 1133 union { 1134 char msg[2048]; 1135 struct rt_msghdr hdr; 1136 } u; 1137 1138 verbose = 1; 1139 if (debugonly) { 1140 interfaces(); 1141 exit(0); 1142 } 1143 for(;;) { 1144 time_t now; 1145 n = prog_read(sock, &u, sizeof(u)); 1146 now = time(NULL); 1147 (void)printf("got message of size %d on %s", n, ctime(&now)); 1148 print_rtmsg(&u.hdr, n); 1149 } 1150 } 1151 1152 #endif /* SMALL */ 1153 1154 1155 struct { 1156 struct rt_msghdr m_rtm; 1157 char m_space[512]; 1158 } m_rtmsg; 1159 1160 static int 1161 rtmsg(int cmd, int flags, struct sou *soup) 1162 { 1163 static int seq; 1164 int rlen; 1165 char *cp = m_rtmsg.m_space; 1166 int l; 1167 1168 #define NEXTADDR(w, u) \ 1169 if (rtm_addrs & (w)) {\ 1170 l = RT_ROUNDUP(u->sa.sa_len); memmove(cp, u, l); cp += l;\ 1171 if (verbose && ! shortoutput) sodump(u,#u);\ 1172 } 1173 1174 errno = 0; 1175 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1176 if (cmd == 'a') 1177 cmd = RTM_ADD; 1178 else if (cmd == 'c') 1179 cmd = RTM_CHANGE; 1180 else if (cmd == 'g') { 1181 #ifdef SMALL 1182 return -1; 1183 #else /* SMALL */ 1184 cmd = RTM_GET; 1185 if (soup->so_ifp->sa.sa_family == AF_UNSPEC) { 1186 soup->so_ifp->sa.sa_family = AF_LINK; 1187 soup->so_ifp->sa.sa_len = sizeof(struct sockaddr_dl); 1188 rtm_addrs |= RTA_IFP; 1189 } 1190 #endif /* SMALL */ 1191 } else 1192 cmd = RTM_DELETE; 1193 #define rtm m_rtmsg.m_rtm 1194 rtm.rtm_type = cmd; 1195 rtm.rtm_flags = flags; 1196 rtm.rtm_version = RTM_VERSION; 1197 rtm.rtm_seq = ++seq; 1198 rtm.rtm_addrs = rtm_addrs; 1199 rtm.rtm_rmx = rt_metrics; 1200 rtm.rtm_inits = rtm_inits; 1201 1202 if (rtm_addrs & RTA_NETMASK) 1203 mask_addr(soup); 1204 NEXTADDR(RTA_DST, soup->so_dst); 1205 NEXTADDR(RTA_GATEWAY, soup->so_gate); 1206 NEXTADDR(RTA_NETMASK, soup->so_mask); 1207 NEXTADDR(RTA_GENMASK, soup->so_genmask); 1208 NEXTADDR(RTA_IFP, soup->so_ifp); 1209 NEXTADDR(RTA_IFA, soup->so_ifa); 1210 #ifndef SMALL 1211 NEXTADDR(RTA_TAG, soup->so_mpls); 1212 #endif 1213 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1214 if (verbose && ! shortoutput) { 1215 if (rtm_addrs) 1216 putchar('\n'); 1217 print_rtmsg(&rtm, l); 1218 } 1219 if (debugonly) 1220 return 0; 1221 if ((rlen = prog_write(sock, (char *)&m_rtmsg, l)) < 0) { 1222 warnx("writing to routing socket: %s", route_strerror(errno)); 1223 return -1; 1224 } 1225 if (rlen < l) { 1226 warnx("write to routing socket, got %d for rlen", rlen); 1227 return 1; 1228 } 1229 #ifndef SMALL 1230 if (cmd == RTM_GET) { 1231 do { 1232 l = prog_read(sock, 1233 (char *)&m_rtmsg, sizeof(m_rtmsg)); 1234 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1235 if (l < 0) 1236 err(EXIT_FAILURE, "read from routing socket"); 1237 else 1238 return print_getmsg(&rtm, l, soup); 1239 } 1240 #endif /* SMALL */ 1241 #undef rtm 1242 return 0; 1243 } 1244 1245 static void 1246 mask_addr(struct sou *soup) 1247 { 1248 int olen = soup->so_mask->sa.sa_len; 1249 char *cp1 = olen + (char *)soup->so_mask, *cp2; 1250 1251 for (soup->so_mask->sa.sa_len = 0; cp1 > (char *)soup->so_mask; ) 1252 if (*--cp1 != 0) { 1253 soup->so_mask->sa.sa_len = 1 + cp1 - (char *)soup->so_mask; 1254 break; 1255 } 1256 if ((rtm_addrs & RTA_DST) == 0) 1257 return; 1258 switch (soup->so_dst->sa.sa_family) { 1259 case AF_INET: 1260 #ifdef INET6 1261 case AF_INET6: 1262 #endif 1263 #ifndef SMALL 1264 case AF_APPLETALK: 1265 #endif /* SMALL */ 1266 case 0: 1267 return; 1268 } 1269 cp1 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_dst; 1270 cp2 = soup->so_dst->sa.sa_len + 1 + (char *)soup->so_dst; 1271 while (cp2 > cp1) 1272 *--cp2 = 0; 1273 cp2 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_mask; 1274 while (cp1 > soup->so_dst->sa.sa_data) 1275 *--cp1 &= *--cp2; 1276 } 1277 1278 const char * const msgtypes[] = { 1279 [RTM_ADD] = "RTM_ADD: Add Route", 1280 [RTM_DELETE] = "RTM_DELETE: Delete Route", 1281 [RTM_CHANGE] = "RTM_CHANGE: Change Metrics, Flags or Gateway", 1282 [RTM_GET] = "RTM_GET: Report Metrics", 1283 [RTM_LOSING] = "RTM_LOSING: Kernel Suspects Partitioning", 1284 [RTM_REDIRECT] = "RTM_REDIRECT: Told to use different route", 1285 [RTM_MISS] = "RTM_MISS: Lookup failed on this address", 1286 [RTM_LOCK] = "RTM_LOCK: fix specified metrics", 1287 [RTM_OLDADD] = "RTM_OLDADD: caused by SIOCADDRT", 1288 [RTM_OLDDEL] = "RTM_OLDDEL: caused by SIOCDELRT", 1289 [RTM_RESOLVE] = "RTM_RESOLVE: Route created by cloning", 1290 [RTM_NEWADDR] = "RTM_NEWADDR: address being added to iface", 1291 [RTM_DELADDR] = "RTM_DELADDR: address being removed from iface", 1292 [RTM_OOIFINFO] = "RTM_OOIFINFO: iface status change (pre-1.5)", 1293 [RTM_OIFINFO] = "RTM_OIFINFO: iface status change (pre-64bit time)", 1294 [RTM_IFANNOUNCE] = "RTM_IFANNOUNCE: iface arrival/departure", 1295 [RTM_IEEE80211] = "RTM_IEEE80211: IEEE80211 wireless event", 1296 [RTM_IFINFO] = "RTM_IFINFO: iface status change", 1297 [RTM_CHGADDR] = "RTM_CHGADDR: address being changed on iface", 1298 }; 1299 1300 const char metricnames[] = 1301 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1302 const char routeflags[] = 1303 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1\023LOCAL\024BROADCAST"; 1304 const char ifnetflags[] = 1305 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1306 const char addrnames[] = 1307 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD\011TAG"; 1308 1309 1310 #ifndef SMALL 1311 static const char * 1312 linkstate(struct if_msghdr *ifm) 1313 { 1314 static char buf[64]; 1315 1316 switch (ifm->ifm_data.ifi_link_state) { 1317 case LINK_STATE_UNKNOWN: 1318 return "carrier: unknown"; 1319 case LINK_STATE_DOWN: 1320 return "carrier: no carrier"; 1321 case LINK_STATE_UP: 1322 return "carrier: active"; 1323 default: 1324 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1325 ifm->ifm_data.ifi_link_state); 1326 return buf; 1327 } 1328 } 1329 #endif /* SMALL */ 1330 1331 static void 1332 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1333 { 1334 struct if_msghdr *ifm; 1335 struct ifa_msghdr *ifam; 1336 struct if_announcemsghdr *ifan; 1337 union { 1338 struct ieee80211_join_event join; 1339 struct ieee80211_leave_event leave; 1340 struct ieee80211_replay_event replay; 1341 struct ieee80211_michael_event michael; 1342 } ev; 1343 size_t evlen = 0; 1344 1345 if (verbose == 0) 1346 return; 1347 if (rtm->rtm_version != RTM_VERSION) { 1348 (void)printf("routing message version %d not understood\n", 1349 rtm->rtm_version); 1350 return; 1351 } 1352 if (msgtypes[rtm->rtm_type]) 1353 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1354 else 1355 (void)printf("#%d: ", rtm->rtm_type); 1356 (void)printf("len %d, ", rtm->rtm_msglen); 1357 switch (rtm->rtm_type) { 1358 case RTM_IFINFO: 1359 ifm = (struct if_msghdr *)rtm; 1360 (void)printf("if# %d, %s, flags: ", ifm->ifm_index, 1361 #ifdef SMALL 1362 "" 1363 #else 1364 linkstate(ifm) 1365 #endif /* SMALL */ 1366 ); 1367 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1368 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1369 break; 1370 case RTM_NEWADDR: 1371 case RTM_DELADDR: 1372 case RTM_CHGADDR: 1373 ifam = (struct ifa_msghdr *)rtm; 1374 (void)printf("metric %d, flags: ", ifam->ifam_metric); 1375 bprintf(stdout, ifam->ifam_flags, routeflags); 1376 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1377 break; 1378 case RTM_IEEE80211: 1379 ifan = (struct if_announcemsghdr *)rtm; 1380 (void)printf("if# %d, what: ", ifan->ifan_index); 1381 switch (ifan->ifan_what) { 1382 case RTM_IEEE80211_ASSOC: 1383 printf("associate"); 1384 break; 1385 case RTM_IEEE80211_REASSOC: 1386 printf("re-associate"); 1387 break; 1388 case RTM_IEEE80211_DISASSOC: 1389 printf("disassociate"); 1390 break; 1391 case RTM_IEEE80211_SCAN: 1392 printf("scan complete"); 1393 break; 1394 case RTM_IEEE80211_JOIN: 1395 evlen = sizeof(ev.join); 1396 printf("join"); 1397 break; 1398 case RTM_IEEE80211_LEAVE: 1399 evlen = sizeof(ev.leave); 1400 printf("leave"); 1401 break; 1402 case RTM_IEEE80211_MICHAEL: 1403 evlen = sizeof(ev.michael); 1404 printf("michael"); 1405 break; 1406 case RTM_IEEE80211_REPLAY: 1407 evlen = sizeof(ev.replay); 1408 printf("replay"); 1409 break; 1410 default: 1411 evlen = 0; 1412 printf("#%d", ifan->ifan_what); 1413 break; 1414 } 1415 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1416 printf(" (truncated)\n"); 1417 break; 1418 } 1419 (void)memcpy(&ev, (ifan + 1), evlen); 1420 switch (ifan->ifan_what) { 1421 case RTM_IEEE80211_JOIN: 1422 case RTM_IEEE80211_LEAVE: 1423 printf(" mac %" PRIETHER, 1424 PRIETHER_ARGS(ev.join.iev_addr)); 1425 break; 1426 case RTM_IEEE80211_REPLAY: 1427 case RTM_IEEE80211_MICHAEL: 1428 printf(" src %" PRIETHER " dst %" PRIETHER 1429 " cipher %" PRIu8 " keyix %" PRIu8, 1430 PRIETHER_ARGS(ev.replay.iev_src), 1431 PRIETHER_ARGS(ev.replay.iev_dst), 1432 ev.replay.iev_cipher, 1433 ev.replay.iev_keyix); 1434 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1435 printf(" key rsc %#" PRIx64 1436 " frame rsc %#" PRIx64, 1437 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1438 } 1439 break; 1440 default: 1441 break; 1442 } 1443 printf("\n"); 1444 break; 1445 case RTM_IFANNOUNCE: 1446 ifan = (struct if_announcemsghdr *)rtm; 1447 (void)printf("if# %d, what: ", ifan->ifan_index); 1448 switch (ifan->ifan_what) { 1449 case IFAN_ARRIVAL: 1450 printf("arrival"); 1451 break; 1452 case IFAN_DEPARTURE: 1453 printf("departure"); 1454 break; 1455 default: 1456 printf("#%d", ifan->ifan_what); 1457 break; 1458 } 1459 printf("\n"); 1460 break; 1461 default: 1462 (void)printf("pid %d, seq %d, errno %d, flags: ", 1463 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1464 bprintf(stdout, rtm->rtm_flags, routeflags); 1465 pmsg_common(rtm); 1466 } 1467 } 1468 1469 #ifndef SMALL 1470 static int 1471 print_getmsg(struct rt_msghdr *rtm, int msglen, struct sou *soup) 1472 { 1473 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL, *mpls = NULL; 1474 struct sockaddr_dl *ifp = NULL; 1475 struct sockaddr *sa; 1476 char *cp; 1477 int i; 1478 1479 if (! shortoutput) { 1480 (void)printf(" route to: %s\n", 1481 routename(&soup->so_dst->sa, nflag)); 1482 } 1483 if (rtm->rtm_version != RTM_VERSION) { 1484 warnx("routing message version %d not understood", 1485 rtm->rtm_version); 1486 return 1; 1487 } 1488 if (rtm->rtm_msglen > msglen) { 1489 warnx("message length mismatch, in packet %d, returned %d", 1490 rtm->rtm_msglen, msglen); 1491 } 1492 if (rtm->rtm_errno) { 1493 warnx("RTM_GET: %s (errno %d)", 1494 strerror(rtm->rtm_errno), rtm->rtm_errno); 1495 return 1; 1496 } 1497 cp = ((char *)(rtm + 1)); 1498 if (rtm->rtm_addrs) 1499 for (i = 1; i; i <<= 1) 1500 if (i & rtm->rtm_addrs) { 1501 sa = (struct sockaddr *)cp; 1502 switch (i) { 1503 case RTA_DST: 1504 dst = sa; 1505 break; 1506 case RTA_GATEWAY: 1507 gate = sa; 1508 break; 1509 case RTA_NETMASK: 1510 mask = sa; 1511 break; 1512 case RTA_IFP: 1513 if (sa->sa_family == AF_LINK && 1514 ((struct sockaddr_dl *)sa)->sdl_nlen) 1515 ifp = (struct sockaddr_dl *)sa; 1516 break; 1517 case RTA_IFA: 1518 ifa = sa; 1519 break; 1520 case RTA_TAG: 1521 mpls = sa; 1522 break; 1523 } 1524 RT_ADVANCE(cp, sa); 1525 } 1526 if (dst && mask) 1527 mask->sa_family = dst->sa_family; /* XXX */ 1528 if (dst && ! shortoutput) 1529 (void)printf("destination: %s\n", 1530 routename(dst, nflag)); 1531 if (mask && ! shortoutput) { 1532 int savenflag = nflag; 1533 1534 nflag = RT_NFLAG; 1535 (void)printf(" mask: %s\n", 1536 routename(mask, nflag)); 1537 nflag = savenflag; 1538 } 1539 if (gate && rtm->rtm_flags & RTF_GATEWAY) { 1540 const char *name; 1541 1542 name = routename(gate, nflag); 1543 if (shortoutput) { 1544 if (*name == '\0') 1545 return 1; 1546 (void)printf("%s\n", name); 1547 } else 1548 (void)printf(" gateway: %s\n", name); 1549 } 1550 if (mpls) { 1551 const char *name; 1552 name = routename(mpls, nflag); 1553 if(shortoutput) { 1554 if (*name == '\0') 1555 return 1; 1556 printf("%s\n", name); 1557 } else 1558 printf(" Tag: %s\n", name); 1559 } 1560 1561 if (ifa && ! shortoutput) 1562 (void)printf(" local addr: %s\n", 1563 routename(ifa, nflag)); 1564 if (ifp && ! shortoutput) 1565 (void)printf(" interface: %.*s\n", 1566 ifp->sdl_nlen, ifp->sdl_data); 1567 if (! shortoutput) { 1568 (void)printf(" flags: "); 1569 bprintf(stdout, rtm->rtm_flags, routeflags); 1570 } 1571 1572 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1573 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1574 1575 if (! shortoutput) { 1576 (void)printf("\n%s\n", "\ 1577 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1578 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1579 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1580 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1581 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1582 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1583 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1584 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1585 if (rtm->rtm_rmx.rmx_expire) 1586 rtm->rtm_rmx.rmx_expire -= time(0); 1587 printf("%8"PRId64"%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1588 } 1589 #undef lock 1590 #undef msec 1591 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1592 1593 if (shortoutput) 1594 return (rtm->rtm_addrs & RTF_GATEWAY) == 0; 1595 else if (verbose) 1596 pmsg_common(rtm); 1597 else if (rtm->rtm_addrs &~ RTA_IGN) { 1598 (void)printf("sockaddrs: "); 1599 bprintf(stdout, rtm->rtm_addrs, addrnames); 1600 putchar('\n'); 1601 } 1602 return 0; 1603 #undef RTA_IGN 1604 } 1605 #endif /* SMALL */ 1606 1607 void 1608 pmsg_common(struct rt_msghdr *rtm) 1609 { 1610 (void)printf("\nlocks: "); 1611 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1612 (void)printf(" inits: "); 1613 bprintf(stdout, rtm->rtm_inits, metricnames); 1614 pmsg_addrs((char *)(rtm + 1), rtm->rtm_addrs); 1615 } 1616 1617 static void 1618 extract_addrs(const char *cp, int addrs, const struct sockaddr *sa[], int *nmfp) 1619 { 1620 int i, nmf = -1; 1621 1622 for (i = 0; i < RTAX_MAX; i++) { 1623 if ((1 << i) & addrs) { 1624 sa[i] = (const struct sockaddr *)cp; 1625 if ((i == RTAX_DST || i == RTAX_IFA) && 1626 nmf == -1) 1627 nmf = sa[i]->sa_family; 1628 RT_ADVANCE(cp, sa[i]); 1629 } else 1630 sa[i] = NULL; 1631 } 1632 1633 if (nmfp != NULL) 1634 *nmfp = nmf; 1635 } 1636 1637 static void 1638 pmsg_addrs(const char *cp, int addrs) 1639 { 1640 const struct sockaddr *sa[RTAX_MAX]; 1641 int i, nmf; 1642 1643 if (addrs != 0) { 1644 (void)printf("\nsockaddrs: "); 1645 bprintf(stdout, addrs, addrnames); 1646 (void)putchar('\n'); 1647 extract_addrs(cp, addrs, sa, &nmf); 1648 for (i = 0; i < RTAX_MAX; i++) { 1649 if (sa[i] == NULL) 1650 continue; 1651 1652 if (i == RTAX_NETMASK && sa[i]->sa_len) 1653 (void)printf(" %s", 1654 netmask_string(sa[i], -1, nmf)); 1655 else 1656 (void)printf(" %s", 1657 routename(sa[i], nflag)); 1658 } 1659 } 1660 (void)putchar('\n'); 1661 (void)fflush(stdout); 1662 } 1663 1664 static void 1665 bprintf(FILE *fp, int b, const char *f) 1666 { 1667 int i; 1668 int gotsome = 0; 1669 const uint8_t *s = (const uint8_t *)f; 1670 1671 if (b == 0) { 1672 fputs("none", fp); 1673 return; 1674 } 1675 while ((i = *s++) != 0) { 1676 if (b & (1 << (i-1))) { 1677 if (gotsome == 0) 1678 i = '<'; 1679 else 1680 i = ','; 1681 (void)putc(i, fp); 1682 gotsome = 1; 1683 for (; (i = *s) > 32; s++) 1684 (void)putc(i, fp); 1685 } else 1686 while (*s > 32) 1687 s++; 1688 } 1689 if (gotsome) 1690 (void)putc('>', fp); 1691 } 1692 1693 int 1694 keyword(const char *cp) 1695 { 1696 struct keytab *kt = keywords; 1697 1698 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1699 kt++; 1700 return kt->kt_i; 1701 } 1702 1703 static void 1704 sodump(sup su, const char *which) 1705 { 1706 #ifdef INET6 1707 char ntop_buf[NI_MAXHOST]; 1708 #endif 1709 1710 switch (su->sa.sa_family) { 1711 case AF_INET: 1712 (void)printf("%s: inet %s; ", 1713 which, inet_ntoa(su->sin.sin_addr)); 1714 break; 1715 #ifndef SMALL 1716 case AF_APPLETALK: 1717 (void)printf("%s: atalk %d.%d; ", 1718 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1719 break; 1720 #endif 1721 case AF_LINK: 1722 (void)printf("%s: link %s; ", 1723 which, link_ntoa(&su->sdl)); 1724 break; 1725 #ifdef INET6 1726 case AF_INET6: 1727 (void)printf("%s: inet6 %s; ", 1728 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 1729 ntop_buf, sizeof(ntop_buf))); 1730 break; 1731 #endif 1732 #ifndef SMALL 1733 case AF_MPLS: 1734 { 1735 union mpls_shim ms; 1736 const union mpls_shim *pms; 1737 int psize = sizeof(struct sockaddr_mpls); 1738 1739 ms.s_addr = ntohl(su->smpls.smpls_addr.s_addr); 1740 printf("%s: mpls %u; ", 1741 which, ms.shim.label); 1742 1743 pms = &su->smpls.smpls_addr; 1744 while(psize < su->smpls.smpls_len) { 1745 pms++; 1746 ms.s_addr = ntohl(pms->s_addr); 1747 printf("%u; ", ms.shim.label); 1748 psize += sizeof(ms); 1749 } 1750 break; 1751 } 1752 #endif /* SMALL */ 1753 default: 1754 (void)printf("%s: (%d) %s; ", 1755 which, su->sa.sa_family, any_ntoa(&su->sa)); 1756 } 1757 (void)fflush(stdout); 1758 } 1759 1760 /* States*/ 1761 #define VIRGIN 0 1762 #define GOTONE 1 1763 #define GOTTWO 2 1764 /* Inputs */ 1765 #define DIGIT (4*0) 1766 #define END (4*1) 1767 #define DELIM (4*2) 1768 1769 static void 1770 sockaddr(const char *addr, struct sockaddr *sa) 1771 { 1772 char *cp = (char *)sa; 1773 int size = sa->sa_len; 1774 char *cplim = cp + size; 1775 int byte = 0, state = VIRGIN, new = 0; 1776 1777 (void)memset(cp, 0, size); 1778 cp++; 1779 do { 1780 if ((*addr >= '0') && (*addr <= '9')) { 1781 new = *addr - '0'; 1782 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1783 new = *addr - 'a' + 10; 1784 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1785 new = *addr - 'A' + 10; 1786 } else if (*addr == 0) 1787 state |= END; 1788 else 1789 state |= DELIM; 1790 addr++; 1791 switch (state /* | INPUT */) { 1792 case GOTTWO | DIGIT: 1793 *cp++ = byte; /*FALLTHROUGH*/ 1794 case VIRGIN | DIGIT: 1795 state = GOTONE; byte = new; continue; 1796 case GOTONE | DIGIT: 1797 state = GOTTWO; byte = new + (byte << 4); continue; 1798 default: /* | DELIM */ 1799 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1800 case GOTONE | END: 1801 case GOTTWO | END: 1802 *cp++ = byte; /* FALLTHROUGH */ 1803 case VIRGIN | END: 1804 break; 1805 } 1806 break; 1807 } while (cp < cplim); 1808 sa->sa_len = cp - (char *)sa; 1809 } 1810