route.c revision 1.149
1 /* $NetBSD: route.c,v 1.149 2014/12/20 13:15:48 prlw1 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 1.149 2014/12/20 13:15:48 prlw1 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 (af != AF_UNSPEC && sa->sa_family != af) 340 continue; 341 if (debugonly) 342 continue; 343 rtm->rtm_type = RTM_DELETE; 344 rtm->rtm_seq = seqno; 345 if ((rlen = prog_write(sock, next, 346 rtm->rtm_msglen)) < 0) { 347 warnx("writing to routing socket: %s", 348 route_strerror(errno)); 349 return 1; 350 } 351 if (rlen < (int)rtm->rtm_msglen) { 352 warnx("write to routing socket, got %d for rlen", rlen); 353 return 1; 354 } 355 seqno++; 356 if (qflag) 357 continue; 358 if (verbose) 359 print_rtmsg(rtm, rlen); 360 else { 361 (void)printf("%-20.20s ", netname(sa, NULL, nflag)); 362 sa = (struct sockaddr *)(RT_ROUNDUP(sa->sa_len) + 363 (char *)sa); 364 (void)printf("%-20.20s ", routename(sa, nflag)); 365 (void)printf("done\n"); 366 } 367 } 368 free(buf); 369 return 0; 370 } 371 372 static const char * 373 route_strerror(int error) 374 { 375 376 switch (error) { 377 case ESRCH: 378 return "not in table"; 379 case EBUSY: 380 return "entry in use"; 381 case ENOBUFS: 382 return "routing table overflow"; 383 default: 384 return strerror(error); 385 } 386 } 387 388 static void 389 set_metric(const char *value, int key) 390 { 391 int flag = 0; 392 uint64_t noval, *valp = &noval; 393 394 switch (key) { 395 #define caseof(x, y, z) \ 396 case x: valp = (uint64_t *)&rt_metrics.z; flag = y; break 397 caseof(K_MTU, RTV_MTU, rmx_mtu); 398 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 399 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 400 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 401 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 402 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 403 caseof(K_RTT, RTV_RTT, rmx_rtt); 404 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 405 } 406 rtm_inits |= flag; 407 if (lockrest || locking) 408 rt_metrics.rmx_locks |= flag; 409 if (locking) 410 locking = 0; 411 *valp = strtoul(value, NULL, 0); 412 } 413 414 static int 415 newroute(int argc, char *const *argv) 416 { 417 const char *cmd, *dest = "", *gateway = ""; 418 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 419 int key; 420 struct hostent *hp = 0; 421 struct sou sou, *soup = &sou; 422 423 sou.so_dst = calloc(1, sizeof(union sockunion)); 424 sou.so_gate = calloc(1, sizeof(union sockunion)); 425 sou.so_mask = calloc(1, sizeof(union sockunion)); 426 sou.so_genmask = calloc(1, sizeof(union sockunion)); 427 sou.so_ifa = calloc(1, sizeof(union sockunion)); 428 sou.so_ifp = calloc(1, sizeof(union sockunion)); 429 sou.so_mpls = calloc(1, sizeof(union sockunion)); 430 431 if (sou.so_dst == NULL || sou.so_gate == NULL || sou.so_mask == NULL || 432 sou.so_genmask == NULL || sou.so_ifa == NULL || sou.so_ifp == NULL || 433 sou.so_mpls == NULL) 434 errx(EXIT_FAILURE, "Cannot allocate memory"); 435 436 cmd = argv[0]; 437 af = AF_UNSPEC; 438 if (*cmd != 'g') { 439 /* Don't want to read back our messages */ 440 prog_shutdown(sock, SHUT_RD); 441 } 442 while (--argc > 0) { 443 if (**(++argv)== '-') { 444 switch (key = keyword(1 + *argv)) { 445 446 case K_SA: 447 af = PF_ROUTE; 448 aflen = sizeof(union sockunion); 449 break; 450 451 #ifndef SMALL 452 case K_ATALK: 453 af = AF_APPLETALK; 454 aflen = sizeof(struct sockaddr_at); 455 break; 456 #endif 457 458 case K_INET: 459 af = AF_INET; 460 aflen = sizeof(struct sockaddr_in); 461 break; 462 463 #ifdef INET6 464 case K_INET6: 465 af = AF_INET6; 466 aflen = sizeof(struct sockaddr_in6); 467 break; 468 #endif 469 470 case K_LINK: 471 af = AF_LINK; 472 aflen = sizeof(struct sockaddr_dl); 473 break; 474 475 #ifndef SMALL 476 case K_MPLS: 477 af = AF_MPLS; 478 aflen = sizeof(struct sockaddr_mpls); 479 break; 480 case K_TAG: 481 if (!--argc) 482 usage(1+*argv); 483 af = AF_MPLS; 484 aflen = sizeof(struct sockaddr_mpls); 485 (void)getaddr(RTA_TAG, *++argv, 0, soup); 486 break; 487 #endif /* SMALL */ 488 489 case K_IFACE: 490 case K_INTERFACE: 491 iflag++; 492 break; 493 case K_NOSTATIC: 494 flags &= ~RTF_STATIC; 495 break; 496 case K_LLINFO: 497 flags |= RTF_LLINFO; 498 break; 499 case K_LOCK: 500 locking = 1; 501 break; 502 case K_LOCKREST: 503 lockrest = 1; 504 break; 505 case K_HOST: 506 forcehost++; 507 break; 508 case K_REJECT: 509 flags |= RTF_REJECT; 510 break; 511 case K_NOREJECT: 512 flags &= ~RTF_REJECT; 513 break; 514 case K_BLACKHOLE: 515 flags |= RTF_BLACKHOLE; 516 break; 517 case K_NOBLACKHOLE: 518 flags &= ~RTF_BLACKHOLE; 519 break; 520 case K_CLONED: 521 flags |= RTF_CLONED; 522 break; 523 case K_NOCLONED: 524 flags &= ~RTF_CLONED; 525 break; 526 case K_PROTO1: 527 flags |= RTF_PROTO1; 528 break; 529 case K_PROTO2: 530 flags |= RTF_PROTO2; 531 break; 532 case K_PROXY: 533 flags |= RTF_ANNOUNCE; 534 break; 535 case K_CLONING: 536 flags |= RTF_CLONING; 537 break; 538 case K_NOCLONING: 539 flags &= ~RTF_CLONING; 540 break; 541 case K_XRESOLVE: 542 flags |= RTF_XRESOLVE; 543 break; 544 case K_STATIC: 545 flags |= RTF_STATIC; 546 break; 547 case K_IFA: 548 if (!--argc) 549 usage(1+*argv); 550 (void)getaddr(RTA_IFA, *++argv, 0, soup); 551 break; 552 case K_IFP: 553 if (!--argc) 554 usage(1+*argv); 555 (void)getaddr(RTA_IFP, *++argv, 0, soup); 556 break; 557 case K_GENMASK: 558 if (!--argc) 559 usage(1+*argv); 560 (void)getaddr(RTA_GENMASK, *++argv, 0, soup); 561 break; 562 case K_GATEWAY: 563 if (!--argc) 564 usage(1+*argv); 565 (void)getaddr(RTA_GATEWAY, *++argv, 0, soup); 566 break; 567 case K_DST: 568 if (!--argc) 569 usage(1+*argv); 570 ishost = getaddr(RTA_DST, *++argv, &hp, soup); 571 dest = *argv; 572 break; 573 case K_NETMASK: 574 if (!--argc) 575 usage(1+*argv); 576 (void)getaddr(RTA_NETMASK, *++argv, 0, soup); 577 /* FALLTHROUGH */ 578 case K_NET: 579 forcenet++; 580 break; 581 case K_PREFIXLEN: 582 if (!--argc) 583 usage(1+*argv); 584 ishost = prefixlen(*++argv, soup); 585 break; 586 case K_MTU: 587 case K_HOPCOUNT: 588 case K_EXPIRE: 589 case K_RECVPIPE: 590 case K_SENDPIPE: 591 case K_SSTHRESH: 592 case K_RTT: 593 case K_RTTVAR: 594 if (!--argc) 595 usage(1+*argv); 596 set_metric(*++argv, key); 597 break; 598 default: 599 usage(1+*argv); 600 } 601 } else { 602 if ((rtm_addrs & RTA_DST) == 0) { 603 dest = *argv; 604 ishost = getaddr(RTA_DST, *argv, &hp, soup); 605 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 606 gateway = *argv; 607 (void)getaddr(RTA_GATEWAY, *argv, &hp, soup); 608 } else { 609 ret = atoi(*argv); 610 611 if (ret == 0) { 612 if (strcmp(*argv, "0") == 0) { 613 if (!qflag) { 614 warnx("%s, %s", 615 "old usage of trailing 0", 616 "assuming route to if"); 617 } 618 } else 619 usage(NULL); 620 iflag = 1; 621 continue; 622 } else if (ret > 0 && ret < 10) { 623 if (!qflag) { 624 warnx("%s, %s", 625 "old usage of trailing digit", 626 "assuming route via gateway"); 627 } 628 iflag = 0; 629 continue; 630 } 631 (void)getaddr(RTA_NETMASK, *argv, 0, soup); 632 } 633 } 634 } 635 if ((rtm_addrs & RTA_DST) == 0) 636 errx(EXIT_FAILURE, "missing destination specification"); 637 if (*cmd == 'a' && (rtm_addrs & RTA_GATEWAY) == 0) 638 errx(EXIT_FAILURE, "missing gateway specification"); 639 if (forcehost && forcenet) 640 errx(EXIT_FAILURE, "-host and -net conflict"); 641 else if (forcehost) 642 ishost = 1; 643 else if (forcenet) 644 ishost = 0; 645 flags |= RTF_UP; 646 if (ishost) 647 flags |= RTF_HOST; 648 if (iflag == 0) 649 flags |= RTF_GATEWAY; 650 for (attempts = 1; ; attempts++) { 651 errno = 0; 652 if ((ret = rtmsg(*cmd, flags, soup)) == 0) 653 break; 654 if (errno != ENETUNREACH && errno != ESRCH) 655 break; 656 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 657 hp->h_addr_list++; 658 memmove(&soup->so_gate->sin.sin_addr, hp->h_addr_list[0], 659 hp->h_length); 660 } else 661 break; 662 } 663 if (*cmd == 'g') 664 return ret != 0; 665 if (!qflag) { 666 oerrno = errno; 667 (void)printf("%s %s %s", cmd, ishost? "host" : "net", dest); 668 if (*gateway) { 669 (void)printf(": gateway %s", gateway); 670 if (attempts > 1 && ret == 0 && af == AF_INET) 671 (void)printf(" (%s)", 672 inet_ntoa(soup->so_gate->sin.sin_addr)); 673 } 674 if (ret == 0) 675 (void)printf("\n"); 676 else 677 (void)printf(": %s\n", route_strerror(oerrno)); 678 } 679 free(sou.so_dst); 680 free(sou.so_gate); 681 free(sou.so_mask); 682 free(sou.so_genmask); 683 free(sou.so_ifa); 684 free(sou.so_ifp); 685 free(sou.so_mpls); 686 687 return ret != 0; 688 } 689 690 static void 691 inet_makenetandmask(const u_int32_t net, struct sockaddr_in * const isin, 692 struct sou *soup) 693 { 694 struct sockaddr_in *sin; 695 u_int32_t addr, mask = 0; 696 char *cp; 697 698 rtm_addrs |= RTA_NETMASK; 699 if (net == 0) 700 mask = addr = 0; 701 else if (net < 128) { 702 addr = net << IN_CLASSA_NSHIFT; 703 mask = IN_CLASSA_NET; 704 } else if (net < 192) { 705 addr = net << IN_CLASSA_NSHIFT; 706 mask = IN_CLASSB_NET; 707 } else if (net < 224) { 708 addr = net << IN_CLASSA_NSHIFT; 709 mask = IN_CLASSC_NET; 710 } else if (net < 256) { 711 addr = net << IN_CLASSA_NSHIFT; 712 mask = IN_CLASSD_NET; 713 } else if (net < 49152) { /* 192 * 256 */ 714 addr = net << IN_CLASSB_NSHIFT; 715 mask = IN_CLASSB_NET; 716 } else if (net < 57344) { /* 224 * 256 */ 717 addr = net << IN_CLASSB_NSHIFT; 718 mask = IN_CLASSC_NET; 719 } else if (net < 65536) { 720 addr = net << IN_CLASSB_NSHIFT; 721 mask = IN_CLASSB_NET; 722 } else if (net < 14680064L) { /* 224 * 65536 */ 723 addr = net << IN_CLASSC_NSHIFT; 724 mask = IN_CLASSC_NET; 725 } else if (net < 16777216L) { 726 addr = net << IN_CLASSC_NSHIFT; 727 mask = IN_CLASSD_NET; 728 } else { 729 addr = net; 730 if ((addr & IN_CLASSA_HOST) == 0) 731 mask = IN_CLASSA_NET; 732 else if ((addr & IN_CLASSB_HOST) == 0) 733 mask = IN_CLASSB_NET; 734 else if ((addr & IN_CLASSC_HOST) == 0) 735 mask = IN_CLASSC_NET; 736 else 737 mask = -1; 738 } 739 isin->sin_addr.s_addr = htonl(addr); 740 sin = &soup->so_mask->sin; 741 sin->sin_addr.s_addr = htonl(mask); 742 sin->sin_len = 0; 743 sin->sin_family = 0; 744 cp = (char *)(&sin->sin_addr + 1); 745 while (*--cp == 0 && cp > (char *)sin) 746 ; 747 sin->sin_len = 1 + cp - (char *)sin; 748 sin->sin_family = AF_INET; 749 } 750 751 #ifdef INET6 752 /* 753 * XXX the function may need more improvement... 754 */ 755 static int 756 inet6_makenetandmask(const struct sockaddr_in6 * const sin6, struct sou *soup) 757 { 758 const char *plen; 759 struct in6_addr in6; 760 761 plen = NULL; 762 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 763 sin6->sin6_scope_id == 0) { 764 plen = "0"; 765 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 766 /* aggregatable global unicast - RFC2374 */ 767 memset(&in6, 0, sizeof(in6)); 768 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 769 plen = "64"; 770 } 771 772 if (!plen || strcmp(plen, "128") == 0) 773 return 1; 774 else { 775 rtm_addrs |= RTA_NETMASK; 776 (void)prefixlen(plen, soup); 777 return 0; 778 } 779 } 780 #endif 781 782 /* 783 * Interpret an argument as a network address of some kind, 784 * returning 1 if a host address, 0 if a network address. 785 */ 786 static int 787 getaddr(int which, const char *s, struct hostent **hpp, struct sou *soup) 788 { 789 sup su; 790 struct hostent *hp; 791 struct netent *np; 792 u_int32_t val; 793 char *t; 794 int afamily; /* local copy of af so we can change it */ 795 796 if (af == AF_UNSPEC) { 797 af = AF_INET; 798 aflen = sizeof(struct sockaddr_in); 799 } 800 afamily = af; 801 rtm_addrs |= which; 802 switch (which) { 803 case RTA_DST: 804 su = soup->so_dst; 805 break; 806 case RTA_GATEWAY: 807 su = soup->so_gate; 808 break; 809 case RTA_NETMASK: 810 su = soup->so_mask; 811 break; 812 case RTA_GENMASK: 813 su = soup->so_genmask; 814 break; 815 case RTA_IFP: 816 su = soup->so_ifp; 817 afamily = AF_LINK; 818 break; 819 case RTA_IFA: 820 su = soup->so_ifa; 821 su->sa.sa_family = af; 822 break; 823 #ifndef SMALL 824 case RTA_TAG: 825 su = soup->so_mpls; 826 afamily = AF_MPLS; 827 break; 828 #endif 829 default: 830 su = NULL; 831 usage("Internal Error"); 832 /*NOTREACHED*/ 833 } 834 su->sa.sa_len = aflen; 835 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 836 if (strcmp(s, "default") == 0) { 837 switch (which) { 838 case RTA_DST: 839 forcenet++; 840 (void)getaddr(RTA_NETMASK, s, 0, soup); 841 break; 842 case RTA_NETMASK: 843 case RTA_GENMASK: 844 su->sa.sa_len = 0; 845 } 846 return 0; 847 } 848 switch (afamily) { 849 #ifdef INET6 850 case AF_INET6: 851 { 852 struct addrinfo hints, *res; 853 char *slash = 0; 854 855 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 856 *slash = '\0'; 857 memset(&hints, 0, sizeof(hints)); 858 hints.ai_family = afamily; /*AF_INET6*/ 859 hints.ai_flags = AI_NUMERICHOST; 860 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 861 if (getaddrinfo(s, "0", &hints, &res) != 0) { 862 hints.ai_flags = 0; 863 if (slash) { 864 *slash = '/'; 865 slash = 0; 866 } 867 if (getaddrinfo(s, "0", &hints, &res) != 0) 868 errx(EXIT_FAILURE, "%s: bad value", s); 869 } 870 if (slash) 871 *slash = '/'; 872 if (sizeof(su->sin6) != res->ai_addrlen) 873 errx(EXIT_FAILURE, "%s: bad value", s); 874 if (res->ai_next) { 875 errx(EXIT_FAILURE, 876 "%s: address resolved to multiple values", s); 877 } 878 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 879 freeaddrinfo(res); 880 inet6_putscopeid(&su->sin6, INET6_IS_ADDR_LINKLOCAL| 881 INET6_IS_ADDR_MC_LINKLOCAL); 882 if (hints.ai_flags == AI_NUMERICHOST) { 883 if (slash) 884 return prefixlen(slash + 1, soup); 885 if (which == RTA_DST) 886 return inet6_makenetandmask(&su->sin6, soup); 887 return 0; 888 } else 889 return 1; 890 } 891 #endif 892 893 case PF_ROUTE: 894 su->sa.sa_len = sizeof(*su); 895 sockaddr(s, &su->sa); 896 return 1; 897 898 #ifndef SMALL 899 case AF_APPLETALK: 900 t = strchr (s, '.'); 901 if (!t) { 902 badataddr: 903 errx(EXIT_FAILURE, "bad address: %s", s); 904 } 905 val = atoi (s); 906 if (val > 65535) 907 goto badataddr; 908 su->sat.sat_addr.s_net = val; 909 val = atoi (t); 910 if (val > 256) 911 goto badataddr; 912 su->sat.sat_addr.s_node = val; 913 rtm_addrs |= RTA_NETMASK; 914 return(forcehost || su->sat.sat_addr.s_node != 0); 915 case AF_MPLS: 916 if (which == RTA_DST) 917 soup->so_dst = readtag(su, s); 918 else if (which == RTA_TAG) 919 soup->so_mpls = readtag(su, s); 920 else 921 errx(EXIT_FAILURE, "MPLS can be used only as " 922 "DST or TAG"); 923 return 1; 924 #endif 925 926 case AF_LINK: 927 link_addr(s, &su->sdl); 928 return 1; 929 930 case AF_INET: 931 default: 932 break; 933 } 934 935 if (hpp == NULL) 936 hpp = &hp; 937 *hpp = NULL; 938 939 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 940 *t = '\0'; 941 if (forcenet == 0) { 942 if ((val = inet_addr(s)) != INADDR_NONE) { 943 inet_makenetandmask(htonl(val), &su->sin, soup); 944 return prefixlen(&t[1], soup); 945 } 946 } else { 947 if ((val = inet_network(s)) != INADDR_NONE) { 948 inet_makenetandmask(val, &su->sin, soup); 949 return prefixlen(&t[1], soup); 950 } 951 } 952 *t = '/'; 953 } 954 if (inet_aton(s, &su->sin.sin_addr) && 955 (which != RTA_DST || forcenet == 0)) { 956 val = su->sin.sin_addr.s_addr; 957 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 958 return 1; 959 else { 960 val = ntohl(val); 961 goto netdone; 962 } 963 } 964 if ((val = inet_network(s)) != INADDR_NONE || 965 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 966 netdone: 967 if (which == RTA_DST) 968 inet_makenetandmask(val, &su->sin, soup); 969 return 0; 970 } 971 hp = gethostbyname(s); 972 if (hp) { 973 *hpp = hp; 974 su->sin.sin_family = hp->h_addrtype; 975 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 976 return 1; 977 } 978 errx(EXIT_FAILURE, "%s: bad value", s); 979 /*NOTREACHED*/ 980 } 981 982 #ifndef SMALL 983 static sup 984 readtag(sup su, const char *s) 985 { 986 char *p, *n, *norig; 987 int mplssize = 0; 988 sup retsu = su; 989 990 n = strdup(s); 991 if (n == NULL) 992 errx(EXIT_FAILURE, "%s: Cannot allocate memory", s); 993 norig = n; 994 for (uint i = 0; i < strlen(n); i++) 995 if(n[i] == ',') 996 mplssize++; 997 998 #define MPLS_NEW_SIZE (sizeof(struct sockaddr_mpls) + \ 999 mplssize * sizeof(union mpls_shim)) 1000 1001 if (mplssize != 0 && sizeof(union sockunion) < MPLS_NEW_SIZE) { 1002 free(su); 1003 retsu = malloc(MPLS_NEW_SIZE); 1004 retsu->smpls.smpls_family = AF_MPLS; 1005 } 1006 retsu->smpls.smpls_len = MPLS_NEW_SIZE; 1007 mplssize = 0; 1008 while ((p = strchr(n, ',')) != NULL) { 1009 p[0] = '\0'; 1010 addtag(retsu, n, mplssize); 1011 n = p + 1; 1012 mplssize++; 1013 } 1014 addtag(retsu, n, mplssize); 1015 1016 free(norig); 1017 return retsu; 1018 } 1019 1020 static void 1021 addtag(sup su, const char *s, int where) 1022 { 1023 union mpls_shim *ms = &su->smpls.smpls_addr; 1024 1025 if (atoi(s) < 0 || atoi(s) >= (1 << 20)) 1026 errx(EXIT_FAILURE, "%s: Bad tag", s); 1027 ms[where].s_addr = 0; 1028 ms[where].shim.label = atoi(s); 1029 ms[where].s_addr = htonl(ms[where].s_addr); 1030 } 1031 #endif /* SMALL */ 1032 1033 int 1034 prefixlen(const char *s, struct sou *soup) 1035 { 1036 int max, len = atoi(s); 1037 #ifdef INET6 1038 int q, r; 1039 #endif 1040 1041 switch (af) { 1042 case AF_INET: 1043 max = sizeof(struct in_addr) * 8; 1044 break; 1045 #ifdef INET6 1046 case AF_INET6: 1047 max = sizeof(struct in6_addr) * 8; 1048 break; 1049 #endif 1050 default: 1051 errx(EXIT_FAILURE, "prefixlen is not supported with af %d", af); 1052 /*NOTREACHED*/ 1053 } 1054 1055 rtm_addrs |= RTA_NETMASK; 1056 if (len < -1 || len > max) 1057 errx(EXIT_FAILURE, "%s: bad value", s); 1058 1059 #ifdef INET6 1060 q = len >> 3; 1061 r = len & 7; 1062 #endif 1063 switch (af) { 1064 case AF_INET: 1065 memset(soup->so_mask, 0, sizeof(*soup->so_mask)); 1066 soup->so_mask->sin.sin_family = AF_INET; 1067 soup->so_mask->sin.sin_len = sizeof(struct sockaddr_in); 1068 soup->so_mask->sin.sin_addr.s_addr = (len == 0 ? 0 1069 : htonl(0xffffffff << (32 - len))); 1070 break; 1071 #ifdef INET6 1072 case AF_INET6: 1073 soup->so_mask->sin6.sin6_family = AF_INET6; 1074 soup->so_mask->sin6.sin6_len = sizeof(struct sockaddr_in6); 1075 memset(&soup->so_mask->sin6.sin6_addr, 0, 1076 sizeof(soup->so_mask->sin6.sin6_addr)); 1077 if (q > 0) 1078 memset(&soup->so_mask->sin6.sin6_addr, 0xff, q); 1079 if (r > 0) 1080 *((u_char *)&soup->so_mask->sin6.sin6_addr + q) = 1081 (0xff00 >> r) & 0xff; 1082 break; 1083 #endif 1084 } 1085 return len == max; 1086 } 1087 1088 #ifndef SMALL 1089 static void 1090 interfaces(void) 1091 { 1092 size_t needed; 1093 int mib[6]; 1094 char *buf, *lim, *next; 1095 struct rt_msghdr *rtm; 1096 1097 mib[0] = CTL_NET; 1098 mib[1] = PF_ROUTE; 1099 mib[2] = 0; /* protocol */ 1100 mib[3] = 0; /* wildcard address family */ 1101 mib[4] = NET_RT_IFLIST; 1102 mib[5] = 0; /* no flags */ 1103 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1104 err(EXIT_FAILURE, "route-sysctl-estimate"); 1105 if (needed) { 1106 if ((buf = malloc(needed)) == NULL) 1107 err(EXIT_FAILURE, "malloc"); 1108 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 1109 err(EXIT_FAILURE, 1110 "actual retrieval of interface table"); 1111 } 1112 lim = buf + needed; 1113 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1114 rtm = (struct rt_msghdr *)next; 1115 print_rtmsg(rtm, rtm->rtm_msglen); 1116 } 1117 free(buf); 1118 } 1119 } 1120 1121 static void 1122 monitor(void) 1123 { 1124 int n; 1125 union { 1126 char msg[2048]; 1127 struct rt_msghdr hdr; 1128 } u; 1129 1130 verbose = 1; 1131 if (debugonly) { 1132 interfaces(); 1133 exit(0); 1134 } 1135 for(;;) { 1136 time_t now; 1137 n = prog_read(sock, &u, sizeof(u)); 1138 now = time(NULL); 1139 (void)printf("got message of size %d on %s", n, ctime(&now)); 1140 print_rtmsg(&u.hdr, n); 1141 } 1142 } 1143 1144 #endif /* SMALL */ 1145 1146 1147 struct { 1148 struct rt_msghdr m_rtm; 1149 char m_space[512]; 1150 } m_rtmsg; 1151 1152 static int 1153 rtmsg(int cmd, int flags, struct sou *soup) 1154 { 1155 static int seq; 1156 int rlen; 1157 char *cp = m_rtmsg.m_space; 1158 int l; 1159 1160 #define NEXTADDR(w, u) \ 1161 if (rtm_addrs & (w)) {\ 1162 l = RT_ROUNDUP(u->sa.sa_len); memmove(cp, u, l); cp += l;\ 1163 if (verbose && ! shortoutput) sodump(u,#u);\ 1164 } 1165 1166 errno = 0; 1167 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1168 if (cmd == 'a') 1169 cmd = RTM_ADD; 1170 else if (cmd == 'c') 1171 cmd = RTM_CHANGE; 1172 else if (cmd == 'g') { 1173 #ifdef SMALL 1174 return -1; 1175 #else /* SMALL */ 1176 cmd = RTM_GET; 1177 if (soup->so_ifp->sa.sa_family == AF_UNSPEC) { 1178 soup->so_ifp->sa.sa_family = AF_LINK; 1179 soup->so_ifp->sa.sa_len = sizeof(struct sockaddr_dl); 1180 rtm_addrs |= RTA_IFP; 1181 } 1182 #endif /* SMALL */ 1183 } else 1184 cmd = RTM_DELETE; 1185 #define rtm m_rtmsg.m_rtm 1186 rtm.rtm_type = cmd; 1187 rtm.rtm_flags = flags; 1188 rtm.rtm_version = RTM_VERSION; 1189 rtm.rtm_seq = ++seq; 1190 rtm.rtm_addrs = rtm_addrs; 1191 rtm.rtm_rmx = rt_metrics; 1192 rtm.rtm_inits = rtm_inits; 1193 1194 if (rtm_addrs & RTA_NETMASK) 1195 mask_addr(soup); 1196 NEXTADDR(RTA_DST, soup->so_dst); 1197 NEXTADDR(RTA_GATEWAY, soup->so_gate); 1198 NEXTADDR(RTA_NETMASK, soup->so_mask); 1199 NEXTADDR(RTA_GENMASK, soup->so_genmask); 1200 NEXTADDR(RTA_IFP, soup->so_ifp); 1201 NEXTADDR(RTA_IFA, soup->so_ifa); 1202 #ifndef SMALL 1203 NEXTADDR(RTA_TAG, soup->so_mpls); 1204 #endif 1205 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1206 if (verbose && ! shortoutput) { 1207 if (rtm_addrs) 1208 putchar('\n'); 1209 print_rtmsg(&rtm, l); 1210 } 1211 if (debugonly) 1212 return 0; 1213 if ((rlen = prog_write(sock, (char *)&m_rtmsg, l)) < 0) { 1214 warnx("writing to routing socket: %s", route_strerror(errno)); 1215 return -1; 1216 } 1217 if (rlen < l) { 1218 warnx("write to routing socket, got %d for rlen", rlen); 1219 return 1; 1220 } 1221 #ifndef SMALL 1222 if (cmd == RTM_GET) { 1223 do { 1224 l = prog_read(sock, 1225 (char *)&m_rtmsg, sizeof(m_rtmsg)); 1226 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1227 if (l < 0) 1228 err(EXIT_FAILURE, "read from routing socket"); 1229 else 1230 return print_getmsg(&rtm, l, soup); 1231 } 1232 #endif /* SMALL */ 1233 #undef rtm 1234 return 0; 1235 } 1236 1237 static void 1238 mask_addr(struct sou *soup) 1239 { 1240 int olen = soup->so_mask->sa.sa_len; 1241 char *cp1 = olen + (char *)soup->so_mask, *cp2; 1242 1243 for (soup->so_mask->sa.sa_len = 0; cp1 > (char *)soup->so_mask; ) 1244 if (*--cp1 != 0) { 1245 soup->so_mask->sa.sa_len = 1 + cp1 - (char *)soup->so_mask; 1246 break; 1247 } 1248 if ((rtm_addrs & RTA_DST) == 0) 1249 return; 1250 switch (soup->so_dst->sa.sa_family) { 1251 case AF_INET: 1252 #ifdef INET6 1253 case AF_INET6: 1254 #endif 1255 #ifndef SMALL 1256 case AF_APPLETALK: 1257 #endif /* SMALL */ 1258 case 0: 1259 return; 1260 } 1261 cp1 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_dst; 1262 cp2 = soup->so_dst->sa.sa_len + 1 + (char *)soup->so_dst; 1263 while (cp2 > cp1) 1264 *--cp2 = 0; 1265 cp2 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_mask; 1266 while (cp1 > soup->so_dst->sa.sa_data) 1267 *--cp1 &= *--cp2; 1268 } 1269 1270 const char * const msgtypes[] = { 1271 [RTM_ADD] = "RTM_ADD: Add Route", 1272 [RTM_DELETE] = "RTM_DELETE: Delete Route", 1273 [RTM_CHANGE] = "RTM_CHANGE: Change Metrics, Flags or Gateway", 1274 [RTM_GET] = "RTM_GET: Report Metrics", 1275 [RTM_LOSING] = "RTM_LOSING: Kernel Suspects Partitioning", 1276 [RTM_REDIRECT] = "RTM_REDIRECT: Told to use different route", 1277 [RTM_MISS] = "RTM_MISS: Lookup failed on this address", 1278 [RTM_LOCK] = "RTM_LOCK: fix specified metrics", 1279 [RTM_OLDADD] = "RTM_OLDADD: caused by SIOCADDRT", 1280 [RTM_OLDDEL] = "RTM_OLDDEL: caused by SIOCDELRT", 1281 [RTM_RESOLVE] = "RTM_RESOLVE: Route created by cloning", 1282 [RTM_NEWADDR] = "RTM_NEWADDR: address being added to iface", 1283 [RTM_DELADDR] = "RTM_DELADDR: address being removed from iface", 1284 [RTM_OOIFINFO] = "RTM_OOIFINFO: iface status change (pre-1.5)", 1285 [RTM_OIFINFO] = "RTM_OIFINFO: iface status change (pre-64bit time)", 1286 [RTM_IFANNOUNCE] = "RTM_IFANNOUNCE: iface arrival/departure", 1287 [RTM_IEEE80211] = "RTM_IEEE80211: IEEE80211 wireless event", 1288 [RTM_IFINFO] = "RTM_IFINFO: iface status change", 1289 [RTM_CHGADDR] = "RTM_CHGADDR: address being changed on iface", 1290 }; 1291 1292 const char metricnames[] = 1293 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1294 const char routeflags[] = 1295 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1296 const char ifnetflags[] = 1297 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1298 const char addrnames[] = 1299 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD\011TAG"; 1300 1301 1302 #ifndef SMALL 1303 static const char * 1304 linkstate(struct if_msghdr *ifm) 1305 { 1306 static char buf[64]; 1307 1308 switch (ifm->ifm_data.ifi_link_state) { 1309 case LINK_STATE_UNKNOWN: 1310 return "carrier: unknown"; 1311 case LINK_STATE_DOWN: 1312 return "carrier: no carrier"; 1313 case LINK_STATE_UP: 1314 return "carrier: active"; 1315 default: 1316 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1317 ifm->ifm_data.ifi_link_state); 1318 return buf; 1319 } 1320 } 1321 #endif /* SMALL */ 1322 1323 static void 1324 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1325 { 1326 struct if_msghdr *ifm; 1327 struct ifa_msghdr *ifam; 1328 struct if_announcemsghdr *ifan; 1329 union { 1330 struct ieee80211_join_event join; 1331 struct ieee80211_leave_event leave; 1332 struct ieee80211_replay_event replay; 1333 struct ieee80211_michael_event michael; 1334 } ev; 1335 size_t evlen = 0; 1336 1337 if (verbose == 0) 1338 return; 1339 if (rtm->rtm_version != RTM_VERSION) { 1340 (void)printf("routing message version %d not understood\n", 1341 rtm->rtm_version); 1342 return; 1343 } 1344 if (msgtypes[rtm->rtm_type]) 1345 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1346 else 1347 (void)printf("#%d: ", rtm->rtm_type); 1348 (void)printf("len %d, ", rtm->rtm_msglen); 1349 switch (rtm->rtm_type) { 1350 case RTM_IFINFO: 1351 ifm = (struct if_msghdr *)rtm; 1352 (void)printf("if# %d, %s, flags: ", ifm->ifm_index, 1353 #ifdef SMALL 1354 "" 1355 #else 1356 linkstate(ifm) 1357 #endif /* SMALL */ 1358 ); 1359 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1360 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1361 break; 1362 case RTM_NEWADDR: 1363 case RTM_DELADDR: 1364 case RTM_CHGADDR: 1365 ifam = (struct ifa_msghdr *)rtm; 1366 (void)printf("metric %d, flags: ", ifam->ifam_metric); 1367 bprintf(stdout, ifam->ifam_flags, routeflags); 1368 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1369 break; 1370 case RTM_IEEE80211: 1371 ifan = (struct if_announcemsghdr *)rtm; 1372 (void)printf("if# %d, what: ", ifan->ifan_index); 1373 switch (ifan->ifan_what) { 1374 case RTM_IEEE80211_ASSOC: 1375 printf("associate"); 1376 break; 1377 case RTM_IEEE80211_REASSOC: 1378 printf("re-associate"); 1379 break; 1380 case RTM_IEEE80211_DISASSOC: 1381 printf("disassociate"); 1382 break; 1383 case RTM_IEEE80211_SCAN: 1384 printf("scan complete"); 1385 break; 1386 case RTM_IEEE80211_JOIN: 1387 evlen = sizeof(ev.join); 1388 printf("join"); 1389 break; 1390 case RTM_IEEE80211_LEAVE: 1391 evlen = sizeof(ev.leave); 1392 printf("leave"); 1393 break; 1394 case RTM_IEEE80211_MICHAEL: 1395 evlen = sizeof(ev.michael); 1396 printf("michael"); 1397 break; 1398 case RTM_IEEE80211_REPLAY: 1399 evlen = sizeof(ev.replay); 1400 printf("replay"); 1401 break; 1402 default: 1403 evlen = 0; 1404 printf("#%d", ifan->ifan_what); 1405 break; 1406 } 1407 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1408 printf(" (truncated)\n"); 1409 break; 1410 } 1411 (void)memcpy(&ev, (ifan + 1), evlen); 1412 switch (ifan->ifan_what) { 1413 case RTM_IEEE80211_JOIN: 1414 case RTM_IEEE80211_LEAVE: 1415 printf(" mac %" PRIETHER, 1416 PRIETHER_ARGS(ev.join.iev_addr)); 1417 break; 1418 case RTM_IEEE80211_REPLAY: 1419 case RTM_IEEE80211_MICHAEL: 1420 printf(" src %" PRIETHER " dst %" PRIETHER 1421 " cipher %" PRIu8 " keyix %" PRIu8, 1422 PRIETHER_ARGS(ev.replay.iev_src), 1423 PRIETHER_ARGS(ev.replay.iev_dst), 1424 ev.replay.iev_cipher, 1425 ev.replay.iev_keyix); 1426 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1427 printf(" key rsc %#" PRIx64 1428 " frame rsc %#" PRIx64, 1429 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1430 } 1431 break; 1432 default: 1433 break; 1434 } 1435 printf("\n"); 1436 break; 1437 case RTM_IFANNOUNCE: 1438 ifan = (struct if_announcemsghdr *)rtm; 1439 (void)printf("if# %d, what: ", ifan->ifan_index); 1440 switch (ifan->ifan_what) { 1441 case IFAN_ARRIVAL: 1442 printf("arrival"); 1443 break; 1444 case IFAN_DEPARTURE: 1445 printf("departure"); 1446 break; 1447 default: 1448 printf("#%d", ifan->ifan_what); 1449 break; 1450 } 1451 printf("\n"); 1452 break; 1453 default: 1454 (void)printf("pid %d, seq %d, errno %d, flags: ", 1455 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1456 bprintf(stdout, rtm->rtm_flags, routeflags); 1457 pmsg_common(rtm); 1458 } 1459 } 1460 1461 #ifndef SMALL 1462 static int 1463 print_getmsg(struct rt_msghdr *rtm, int msglen, struct sou *soup) 1464 { 1465 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL, *mpls = NULL; 1466 struct sockaddr_dl *ifp = NULL; 1467 struct sockaddr *sa; 1468 char *cp; 1469 int i; 1470 1471 if (! shortoutput) { 1472 (void)printf(" route to: %s\n", 1473 routename(&soup->so_dst->sa, nflag)); 1474 } 1475 if (rtm->rtm_version != RTM_VERSION) { 1476 warnx("routing message version %d not understood", 1477 rtm->rtm_version); 1478 return 1; 1479 } 1480 if (rtm->rtm_msglen > msglen) { 1481 warnx("message length mismatch, in packet %d, returned %d", 1482 rtm->rtm_msglen, msglen); 1483 } 1484 if (rtm->rtm_errno) { 1485 warnx("RTM_GET: %s (errno %d)", 1486 strerror(rtm->rtm_errno), rtm->rtm_errno); 1487 return 1; 1488 } 1489 cp = ((char *)(rtm + 1)); 1490 if (rtm->rtm_addrs) 1491 for (i = 1; i; i <<= 1) 1492 if (i & rtm->rtm_addrs) { 1493 sa = (struct sockaddr *)cp; 1494 switch (i) { 1495 case RTA_DST: 1496 dst = sa; 1497 break; 1498 case RTA_GATEWAY: 1499 gate = sa; 1500 break; 1501 case RTA_NETMASK: 1502 mask = sa; 1503 break; 1504 case RTA_IFP: 1505 if (sa->sa_family == AF_LINK && 1506 ((struct sockaddr_dl *)sa)->sdl_nlen) 1507 ifp = (struct sockaddr_dl *)sa; 1508 break; 1509 case RTA_IFA: 1510 ifa = sa; 1511 break; 1512 case RTA_TAG: 1513 mpls = sa; 1514 break; 1515 } 1516 RT_ADVANCE(cp, sa); 1517 } 1518 if (dst && mask) 1519 mask->sa_family = dst->sa_family; /* XXX */ 1520 if (dst && ! shortoutput) 1521 (void)printf("destination: %s\n", 1522 routename(dst, nflag)); 1523 if (mask && ! shortoutput) { 1524 int savenflag = nflag; 1525 1526 nflag = RT_NFLAG; 1527 (void)printf(" mask: %s\n", 1528 routename(mask, nflag)); 1529 nflag = savenflag; 1530 } 1531 if (gate && rtm->rtm_flags & RTF_GATEWAY) { 1532 const char *name; 1533 1534 name = routename(gate, nflag); 1535 if (shortoutput) { 1536 if (*name == '\0') 1537 return 1; 1538 (void)printf("%s\n", name); 1539 } else 1540 (void)printf(" gateway: %s\n", name); 1541 } 1542 if (mpls) { 1543 const char *name; 1544 name = routename(mpls, nflag); 1545 if(shortoutput) { 1546 if (*name == '\0') 1547 return 1; 1548 printf("%s\n", name); 1549 } else 1550 printf(" Tag: %s\n", name); 1551 } 1552 1553 if (ifa && ! shortoutput) 1554 (void)printf(" local addr: %s\n", 1555 routename(ifa, nflag)); 1556 if (ifp && ! shortoutput) 1557 (void)printf(" interface: %.*s\n", 1558 ifp->sdl_nlen, ifp->sdl_data); 1559 if (! shortoutput) { 1560 (void)printf(" flags: "); 1561 bprintf(stdout, rtm->rtm_flags, routeflags); 1562 } 1563 1564 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1565 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1566 1567 if (! shortoutput) { 1568 (void)printf("\n%s\n", "\ 1569 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1570 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1571 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1572 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1573 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1574 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1575 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1576 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1577 if (rtm->rtm_rmx.rmx_expire) 1578 rtm->rtm_rmx.rmx_expire -= time(0); 1579 printf("%8"PRId64"%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1580 } 1581 #undef lock 1582 #undef msec 1583 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1584 1585 if (shortoutput) 1586 return (rtm->rtm_addrs & RTF_GATEWAY) == 0; 1587 else if (verbose) 1588 pmsg_common(rtm); 1589 else if (rtm->rtm_addrs &~ RTA_IGN) { 1590 (void)printf("sockaddrs: "); 1591 bprintf(stdout, rtm->rtm_addrs, addrnames); 1592 putchar('\n'); 1593 } 1594 return 0; 1595 #undef RTA_IGN 1596 } 1597 #endif /* SMALL */ 1598 1599 void 1600 pmsg_common(struct rt_msghdr *rtm) 1601 { 1602 (void)printf("\nlocks: "); 1603 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1604 (void)printf(" inits: "); 1605 bprintf(stdout, rtm->rtm_inits, metricnames); 1606 pmsg_addrs((char *)(rtm + 1), rtm->rtm_addrs); 1607 } 1608 1609 static void 1610 extract_addrs(const char *cp, int addrs, const struct sockaddr *sa[], int *nmfp) 1611 { 1612 int i, nmf = -1; 1613 1614 for (i = 0; i < RTAX_MAX; i++) { 1615 if ((1 << i) & addrs) { 1616 sa[i] = (const struct sockaddr *)cp; 1617 if ((i == RTAX_DST || i == RTAX_IFA) && 1618 nmf == -1) 1619 nmf = sa[i]->sa_family; 1620 RT_ADVANCE(cp, sa[i]); 1621 } else 1622 sa[i] = NULL; 1623 } 1624 1625 if (nmfp != NULL) 1626 *nmfp = nmf; 1627 } 1628 1629 static void 1630 pmsg_addrs(const char *cp, int addrs) 1631 { 1632 const struct sockaddr *sa[RTAX_MAX]; 1633 int i, nmf; 1634 1635 if (addrs != 0) { 1636 (void)printf("\nsockaddrs: "); 1637 bprintf(stdout, addrs, addrnames); 1638 (void)putchar('\n'); 1639 extract_addrs(cp, addrs, sa, &nmf); 1640 for (i = 0; i < RTAX_MAX; i++) { 1641 if (sa[i] == NULL) 1642 continue; 1643 1644 if (i == RTAX_NETMASK && sa[i]->sa_len) 1645 (void)printf(" %s", 1646 netmask_string(sa[i], -1, nmf)); 1647 else 1648 (void)printf(" %s", 1649 routename(sa[i], nflag)); 1650 } 1651 } 1652 (void)putchar('\n'); 1653 (void)fflush(stdout); 1654 } 1655 1656 static void 1657 bprintf(FILE *fp, int b, const char *f) 1658 { 1659 int i; 1660 int gotsome = 0; 1661 const uint8_t *s = (const uint8_t *)f; 1662 1663 if (b == 0) { 1664 fputs("none", fp); 1665 return; 1666 } 1667 while ((i = *s++) != 0) { 1668 if (b & (1 << (i-1))) { 1669 if (gotsome == 0) 1670 i = '<'; 1671 else 1672 i = ','; 1673 (void)putc(i, fp); 1674 gotsome = 1; 1675 for (; (i = *s) > 32; s++) 1676 (void)putc(i, fp); 1677 } else 1678 while (*s > 32) 1679 s++; 1680 } 1681 if (gotsome) 1682 (void)putc('>', fp); 1683 } 1684 1685 int 1686 keyword(const char *cp) 1687 { 1688 struct keytab *kt = keywords; 1689 1690 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1691 kt++; 1692 return kt->kt_i; 1693 } 1694 1695 static void 1696 sodump(sup su, const char *which) 1697 { 1698 #ifdef INET6 1699 char ntop_buf[NI_MAXHOST]; 1700 #endif 1701 1702 switch (su->sa.sa_family) { 1703 case AF_INET: 1704 (void)printf("%s: inet %s; ", 1705 which, inet_ntoa(su->sin.sin_addr)); 1706 break; 1707 #ifndef SMALL 1708 case AF_APPLETALK: 1709 (void)printf("%s: atalk %d.%d; ", 1710 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1711 break; 1712 #endif 1713 case AF_LINK: 1714 (void)printf("%s: link %s; ", 1715 which, link_ntoa(&su->sdl)); 1716 break; 1717 #ifdef INET6 1718 case AF_INET6: 1719 (void)printf("%s: inet6 %s; ", 1720 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 1721 ntop_buf, sizeof(ntop_buf))); 1722 break; 1723 #endif 1724 #ifndef SMALL 1725 case AF_MPLS: 1726 { 1727 union mpls_shim ms; 1728 const union mpls_shim *pms; 1729 int psize = sizeof(struct sockaddr_mpls); 1730 1731 ms.s_addr = ntohl(su->smpls.smpls_addr.s_addr); 1732 printf("%s: mpls %u; ", 1733 which, ms.shim.label); 1734 1735 pms = &su->smpls.smpls_addr; 1736 while(psize < su->smpls.smpls_len) { 1737 pms++; 1738 ms.s_addr = ntohl(pms->s_addr); 1739 printf("%u; ", ms.shim.label); 1740 psize += sizeof(ms); 1741 } 1742 break; 1743 } 1744 #endif /* SMALL */ 1745 default: 1746 (void)printf("%s: (%d) %s; ", 1747 which, su->sa.sa_family, any_ntoa(&su->sa)); 1748 } 1749 (void)fflush(stdout); 1750 } 1751 1752 /* States*/ 1753 #define VIRGIN 0 1754 #define GOTONE 1 1755 #define GOTTWO 2 1756 /* Inputs */ 1757 #define DIGIT (4*0) 1758 #define END (4*1) 1759 #define DELIM (4*2) 1760 1761 static void 1762 sockaddr(const char *addr, struct sockaddr *sa) 1763 { 1764 char *cp = (char *)sa; 1765 int size = sa->sa_len; 1766 char *cplim = cp + size; 1767 int byte = 0, state = VIRGIN, new = 0; 1768 1769 (void)memset(cp, 0, size); 1770 cp++; 1771 do { 1772 if ((*addr >= '0') && (*addr <= '9')) { 1773 new = *addr - '0'; 1774 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1775 new = *addr - 'a' + 10; 1776 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1777 new = *addr - 'A' + 10; 1778 } else if (*addr == 0) 1779 state |= END; 1780 else 1781 state |= DELIM; 1782 addr++; 1783 switch (state /* | INPUT */) { 1784 case GOTTWO | DIGIT: 1785 *cp++ = byte; /*FALLTHROUGH*/ 1786 case VIRGIN | DIGIT: 1787 state = GOTONE; byte = new; continue; 1788 case GOTONE | DIGIT: 1789 state = GOTTWO; byte = new + (byte << 4); continue; 1790 default: /* | DELIM */ 1791 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1792 case GOTONE | END: 1793 case GOTTWO | END: 1794 *cp++ = byte; /* FALLTHROUGH */ 1795 case VIRGIN | END: 1796 break; 1797 } 1798 break; 1799 } while (cp < cplim); 1800 sa->sa_len = cp - (char *)sa; 1801 } 1802
Indexes created Sun Sep 28 16:09:52 GMT 2025