route.c revision 1.145
1 /* $NetBSD: route.c,v 1.145 2014/11/06 21:29:32 christos 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 1.145 2014/11/06 21:29:32 christos 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, nflag, af, qflag, tflag, Sflag; 130 int iflag, verbose, aflen = sizeof(struct sockaddr_in), rtag; 131 int locking, lockrest, debugonly, shortoutput; 132 struct rt_metrics rt_metrics; 133 int rtm_inits; 134 short ns_nullh[] = {0,0,0}; 135 short ns_bh[] = {-1,-1,-1}; 136 137 138 void 139 usage(const char *cp) 140 { 141 142 if (cp) 143 warnx("botched keyword: %s", cp); 144 (void)fprintf(stderr, 145 "Usage: %s [ -fnqSsv ] cmd [[ -<qualifers> ] args ]\n", 146 getprogname()); 147 exit(1); 148 /* NOTREACHED */ 149 } 150 151 #define PRIETHER "02x:%02x:%02x:%02x:%02x:%02x" 152 #define PRIETHER_ARGS(__enaddr) (__enaddr)[0], (__enaddr)[1], (__enaddr)[2], \ 153 (__enaddr)[3], (__enaddr)[4], (__enaddr)[5] 154 155 int 156 main(int argc, char * const *argv) 157 { 158 int ch; 159 160 if (argc < 2) 161 usage(NULL); 162 163 while ((ch = getopt(argc, argv, "dfnqSstv")) != -1) 164 switch (ch) { 165 case 'd': 166 debugonly = 1; 167 break; 168 case 'f': 169 doflush = 1; 170 break; 171 case 'n': 172 nflag = RT_NFLAG; 173 break; 174 case 'q': 175 qflag = 1; 176 break; 177 case 'S': 178 Sflag = 1; 179 break; 180 case 's': 181 shortoutput = 1; 182 break; 183 case 't': 184 tflag = 1; 185 break; 186 case 'v': 187 verbose = 1; 188 break; 189 case '?': 190 default: 191 usage(NULL); 192 /*NOTREACHED*/ 193 } 194 argc -= optind; 195 argv += optind; 196 197 if (prog_init && prog_init() == -1) 198 err(1, "init failed"); 199 200 pid = prog_getpid(); 201 if (tflag) 202 sock = prog_open("/dev/null", O_WRONLY, 0); 203 else 204 sock = prog_socket(PF_ROUTE, SOCK_RAW, 0); 205 if (sock < 0) 206 err(EXIT_FAILURE, "socket"); 207 208 if (*argv == NULL) { 209 if (doflush) 210 ch = K_FLUSH; 211 else 212 goto no_cmd; 213 } else 214 ch = keyword(*argv); 215 216 switch (ch) { 217 #ifndef SMALL 218 case K_GET: 219 #endif /* SMALL */ 220 case K_CHANGE: 221 case K_ADD: 222 case K_DELETE: 223 if (doflush) 224 (void)flushroutes(1, argv, 0); 225 return newroute(argc, argv); 226 227 case K_SHOW: 228 show(argc, argv, nflag); 229 return 0; 230 231 #ifndef SMALL 232 case K_MONITOR: 233 monitor(); 234 return 0; 235 236 #endif /* SMALL */ 237 case K_FLUSH: 238 return flushroutes(argc, argv, 0); 239 240 case K_FLUSHALL: 241 return flushroutes(argc, argv, 1); 242 no_cmd: 243 default: 244 usage(*argv); 245 /*NOTREACHED*/ 246 } 247 } 248 249 static char * 250 netmask_string(const struct sockaddr *mask, int len, int family) 251 { 252 static char smask[INET6_ADDRSTRLEN]; 253 struct sockaddr_in nsin; 254 struct sockaddr_in6 nsin6; 255 256 if (len >= 0) 257 snprintf(smask, sizeof(smask), "%d", len); 258 else { 259 switch (family) { 260 case AF_INET: 261 memset(&nsin, 0, sizeof(nsin)); 262 memcpy(&nsin, mask, mask->sa_len); 263 snprintf(smask, sizeof(smask), "%s", 264 inet_ntoa(nsin.sin_addr)); 265 break; 266 case AF_INET6: 267 memset(&nsin6, 0, sizeof(nsin6)); 268 memcpy(&nsin6, mask, mask->sa_len); 269 inet_ntop(family, &nsin6.sin6_addr, smask, 270 sizeof(smask)); 271 break; 272 default: 273 snprintf(smask, sizeof(smask), "%s", any_ntoa(mask)); 274 } 275 } 276 277 return smask; 278 } 279 /* 280 * Purge all entries in the routing tables not 281 * associated with network interfaces. 282 */ 283 static int 284 flushroutes(int argc, char * const argv[], int doall) 285 { 286 struct sockaddr *sa; 287 size_t needed; 288 int flags, mib[6], rlen, seqno; 289 char *buf, *next, *lim; 290 const char *afname; 291 struct rt_msghdr *rtm; 292 293 flags = 0; 294 af = AF_UNSPEC; 295 /* Don't want to read back our messages */ 296 prog_shutdown(sock, SHUT_RD); 297 parse_show_opts(argc, argv, &af, &flags, &afname, false); 298 mib[0] = CTL_NET; 299 mib[1] = PF_ROUTE; 300 mib[2] = 0; /* protocol */ 301 mib[3] = 0; /* wildcard address family */ 302 mib[4] = NET_RT_DUMP; 303 mib[5] = 0; /* no flags */ 304 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 305 err(EXIT_FAILURE, "route-sysctl-estimate"); 306 buf = lim = NULL; 307 if (needed) { 308 if ((buf = malloc(needed)) == NULL) 309 err(EXIT_FAILURE, "malloc"); 310 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 311 err(EXIT_FAILURE, "actual retrieval of routing table"); 312 lim = buf + needed; 313 } 314 if (verbose) { 315 (void)printf("Examining routing table from sysctl\n"); 316 if (af != AF_UNSPEC) 317 printf("(address family %s)\n", afname); 318 } 319 if (needed == 0) 320 return 0; 321 seqno = 0; /* ??? */ 322 for (next = buf; next < lim; next += rtm->rtm_msglen) { 323 rtm = (struct rt_msghdr *)next; 324 sa = (struct sockaddr *)(rtm + 1); 325 if (verbose) 326 print_rtmsg(rtm, rtm->rtm_msglen); 327 if ((rtm->rtm_flags & flags) != flags) 328 continue; 329 if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC | 330 RTF_LLINFO)) && !doall) 331 continue; 332 if (af != AF_UNSPEC && sa->sa_family != af) 333 continue; 334 if (debugonly) 335 continue; 336 rtm->rtm_type = RTM_DELETE; 337 rtm->rtm_seq = seqno; 338 if ((rlen = prog_write(sock, next, 339 rtm->rtm_msglen)) < 0) { 340 warnx("writing to routing socket: %s", 341 route_strerror(errno)); 342 return 1; 343 } 344 if (rlen < (int)rtm->rtm_msglen) { 345 warnx("write to routing socket, got %d for rlen", rlen); 346 return 1; 347 } 348 seqno++; 349 if (qflag) 350 continue; 351 if (verbose) 352 print_rtmsg(rtm, rlen); 353 else { 354 (void)printf("%-20.20s ", netname(sa, NULL, nflag)); 355 sa = (struct sockaddr *)(RT_ROUNDUP(sa->sa_len) + 356 (char *)sa); 357 (void)printf("%-20.20s ", routename(sa, nflag)); 358 (void)printf("done\n"); 359 } 360 } 361 free(buf); 362 return 0; 363 } 364 365 static const char * 366 route_strerror(int error) 367 { 368 369 switch (error) { 370 case ESRCH: 371 return "not in table"; 372 case EBUSY: 373 return "entry in use"; 374 case ENOBUFS: 375 return "routing table overflow"; 376 default: 377 return strerror(error); 378 } 379 } 380 381 static void 382 set_metric(const char *value, int key) 383 { 384 int flag = 0; 385 uint64_t noval, *valp = &noval; 386 387 switch (key) { 388 #define caseof(x, y, z) \ 389 case x: valp = (uint64_t *)&rt_metrics.z; flag = y; break 390 caseof(K_MTU, RTV_MTU, rmx_mtu); 391 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 392 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 393 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 394 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 395 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 396 caseof(K_RTT, RTV_RTT, rmx_rtt); 397 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 398 } 399 rtm_inits |= flag; 400 if (lockrest || locking) 401 rt_metrics.rmx_locks |= flag; 402 if (locking) 403 locking = 0; 404 *valp = strtoul(value, NULL, 0); 405 } 406 407 static int 408 newroute(int argc, char *const *argv) 409 { 410 const char *cmd, *dest = "", *gateway = ""; 411 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 412 int key; 413 struct hostent *hp = 0; 414 struct sou sou, *soup = &sou; 415 416 sou.so_dst = calloc(1, sizeof(union sockunion)); 417 sou.so_gate = calloc(1, sizeof(union sockunion)); 418 sou.so_mask = calloc(1, sizeof(union sockunion)); 419 sou.so_genmask = calloc(1, sizeof(union sockunion)); 420 sou.so_ifa = calloc(1, sizeof(union sockunion)); 421 sou.so_ifp = calloc(1, sizeof(union sockunion)); 422 sou.so_mpls = calloc(1, sizeof(union sockunion)); 423 424 if (sou.so_dst == NULL || sou.so_gate == NULL || sou.so_mask == NULL || 425 sou.so_genmask == NULL || sou.so_ifa == NULL || sou.so_ifp == NULL || 426 sou.so_mpls == NULL) 427 errx(EXIT_FAILURE, "Cannot allocate memory"); 428 429 cmd = argv[0]; 430 af = AF_UNSPEC; 431 if (*cmd != 'g') { 432 /* Don't want to read back our messages */ 433 prog_shutdown(sock, SHUT_RD); 434 } 435 while (--argc > 0) { 436 if (**(++argv)== '-') { 437 switch (key = keyword(1 + *argv)) { 438 439 case K_SA: 440 af = PF_ROUTE; 441 aflen = sizeof(union sockunion); 442 break; 443 444 #ifndef SMALL 445 case K_ATALK: 446 af = AF_APPLETALK; 447 aflen = sizeof(struct sockaddr_at); 448 break; 449 #endif 450 451 case K_INET: 452 af = AF_INET; 453 aflen = sizeof(struct sockaddr_in); 454 break; 455 456 #ifdef INET6 457 case K_INET6: 458 af = AF_INET6; 459 aflen = sizeof(struct sockaddr_in6); 460 break; 461 #endif 462 463 case K_LINK: 464 af = AF_LINK; 465 aflen = sizeof(struct sockaddr_dl); 466 break; 467 468 #ifndef SMALL 469 case K_MPLS: 470 af = AF_MPLS; 471 aflen = sizeof(struct sockaddr_mpls); 472 break; 473 case K_TAG: 474 if (!--argc) 475 usage(1+*argv); 476 af = AF_MPLS; 477 aflen = sizeof(struct sockaddr_mpls); 478 (void)getaddr(RTA_TAG, *++argv, 0, soup); 479 break; 480 #endif /* SMALL */ 481 482 case K_IFACE: 483 case K_INTERFACE: 484 iflag++; 485 break; 486 case K_NOSTATIC: 487 flags &= ~RTF_STATIC; 488 break; 489 case K_LLINFO: 490 flags |= RTF_LLINFO; 491 break; 492 case K_LOCK: 493 locking = 1; 494 break; 495 case K_LOCKREST: 496 lockrest = 1; 497 break; 498 case K_HOST: 499 forcehost++; 500 break; 501 case K_REJECT: 502 flags |= RTF_REJECT; 503 break; 504 case K_NOREJECT: 505 flags &= ~RTF_REJECT; 506 break; 507 case K_BLACKHOLE: 508 flags |= RTF_BLACKHOLE; 509 break; 510 case K_NOBLACKHOLE: 511 flags &= ~RTF_BLACKHOLE; 512 break; 513 case K_CLONED: 514 flags |= RTF_CLONED; 515 break; 516 case K_NOCLONED: 517 flags &= ~RTF_CLONED; 518 break; 519 case K_PROTO1: 520 flags |= RTF_PROTO1; 521 break; 522 case K_PROTO2: 523 flags |= RTF_PROTO2; 524 break; 525 case K_PROXY: 526 flags |= RTF_ANNOUNCE; 527 break; 528 case K_CLONING: 529 flags |= RTF_CLONING; 530 break; 531 case K_NOCLONING: 532 flags &= ~RTF_CLONING; 533 break; 534 case K_XRESOLVE: 535 flags |= RTF_XRESOLVE; 536 break; 537 case K_STATIC: 538 flags |= RTF_STATIC; 539 break; 540 case K_IFA: 541 if (!--argc) 542 usage(1+*argv); 543 (void)getaddr(RTA_IFA, *++argv, 0, soup); 544 break; 545 case K_IFP: 546 if (!--argc) 547 usage(1+*argv); 548 (void)getaddr(RTA_IFP, *++argv, 0, soup); 549 break; 550 case K_GENMASK: 551 if (!--argc) 552 usage(1+*argv); 553 (void)getaddr(RTA_GENMASK, *++argv, 0, soup); 554 break; 555 case K_GATEWAY: 556 if (!--argc) 557 usage(1+*argv); 558 (void)getaddr(RTA_GATEWAY, *++argv, 0, soup); 559 break; 560 case K_DST: 561 if (!--argc) 562 usage(1+*argv); 563 ishost = getaddr(RTA_DST, *++argv, &hp, soup); 564 dest = *argv; 565 break; 566 case K_NETMASK: 567 if (!--argc) 568 usage(1+*argv); 569 (void)getaddr(RTA_NETMASK, *++argv, 0, soup); 570 /* FALLTHROUGH */ 571 case K_NET: 572 forcenet++; 573 break; 574 case K_PREFIXLEN: 575 if (!--argc) 576 usage(1+*argv); 577 ishost = prefixlen(*++argv, soup); 578 break; 579 case K_MTU: 580 case K_HOPCOUNT: 581 case K_EXPIRE: 582 case K_RECVPIPE: 583 case K_SENDPIPE: 584 case K_SSTHRESH: 585 case K_RTT: 586 case K_RTTVAR: 587 if (!--argc) 588 usage(1+*argv); 589 set_metric(*++argv, key); 590 break; 591 default: 592 usage(1+*argv); 593 } 594 } else { 595 if ((rtm_addrs & RTA_DST) == 0) { 596 dest = *argv; 597 ishost = getaddr(RTA_DST, *argv, &hp, soup); 598 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 599 gateway = *argv; 600 (void)getaddr(RTA_GATEWAY, *argv, &hp, soup); 601 } else { 602 ret = atoi(*argv); 603 604 if (ret == 0) { 605 if (strcmp(*argv, "0") == 0) { 606 if (!qflag) { 607 warnx("%s, %s", 608 "old usage of trailing 0", 609 "assuming route to if"); 610 } 611 } else 612 usage(NULL); 613 iflag = 1; 614 continue; 615 } else if (ret > 0 && ret < 10) { 616 if (!qflag) { 617 warnx("%s, %s", 618 "old usage of trailing digit", 619 "assuming route via gateway"); 620 } 621 iflag = 0; 622 continue; 623 } 624 (void)getaddr(RTA_NETMASK, *argv, 0, soup); 625 } 626 } 627 } 628 if ((rtm_addrs & RTA_DST) == 0) 629 errx(EXIT_FAILURE, "missing destination specification"); 630 if (*cmd == 'a' && (rtm_addrs & RTA_GATEWAY) == 0) 631 errx(EXIT_FAILURE, "missing gateway specification"); 632 if (forcehost && forcenet) 633 errx(EXIT_FAILURE, "-host and -net conflict"); 634 else if (forcehost) 635 ishost = 1; 636 else if (forcenet) 637 ishost = 0; 638 flags |= RTF_UP; 639 if (ishost) 640 flags |= RTF_HOST; 641 if (iflag == 0) 642 flags |= RTF_GATEWAY; 643 for (attempts = 1; ; attempts++) { 644 errno = 0; 645 if ((ret = rtmsg(*cmd, flags, soup)) == 0) 646 break; 647 if (errno != ENETUNREACH && errno != ESRCH) 648 break; 649 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 650 hp->h_addr_list++; 651 memmove(&soup->so_gate->sin.sin_addr, hp->h_addr_list[0], 652 hp->h_length); 653 } else 654 break; 655 } 656 if (*cmd == 'g') 657 return ret != 0; 658 if (!qflag) { 659 oerrno = errno; 660 (void)printf("%s %s %s", cmd, ishost? "host" : "net", dest); 661 if (*gateway) { 662 (void)printf(": gateway %s", gateway); 663 if (attempts > 1 && ret == 0 && af == AF_INET) 664 (void)printf(" (%s)", 665 inet_ntoa(soup->so_gate->sin.sin_addr)); 666 } 667 if (ret == 0) 668 (void)printf("\n"); 669 else 670 (void)printf(": %s\n", route_strerror(oerrno)); 671 } 672 free(sou.so_dst); 673 free(sou.so_gate); 674 free(sou.so_mask); 675 free(sou.so_genmask); 676 free(sou.so_ifa); 677 free(sou.so_ifp); 678 free(sou.so_mpls); 679 680 return ret != 0; 681 } 682 683 static void 684 inet_makenetandmask(const u_int32_t net, struct sockaddr_in * const isin, 685 struct sou *soup) 686 { 687 struct sockaddr_in *sin; 688 u_int32_t addr, mask = 0; 689 char *cp; 690 691 rtm_addrs |= RTA_NETMASK; 692 if (net == 0) 693 mask = addr = 0; 694 else if (net < 128) { 695 addr = net << IN_CLASSA_NSHIFT; 696 mask = IN_CLASSA_NET; 697 } else if (net < 192) { 698 addr = net << IN_CLASSA_NSHIFT; 699 mask = IN_CLASSB_NET; 700 } else if (net < 224) { 701 addr = net << IN_CLASSA_NSHIFT; 702 mask = IN_CLASSC_NET; 703 } else if (net < 256) { 704 addr = net << IN_CLASSA_NSHIFT; 705 mask = IN_CLASSD_NET; 706 } else if (net < 49152) { /* 192 * 256 */ 707 addr = net << IN_CLASSB_NSHIFT; 708 mask = IN_CLASSB_NET; 709 } else if (net < 57344) { /* 224 * 256 */ 710 addr = net << IN_CLASSB_NSHIFT; 711 mask = IN_CLASSC_NET; 712 } else if (net < 65536) { 713 addr = net << IN_CLASSB_NSHIFT; 714 mask = IN_CLASSB_NET; 715 } else if (net < 14680064L) { /* 224 * 65536 */ 716 addr = net << IN_CLASSC_NSHIFT; 717 mask = IN_CLASSC_NET; 718 } else if (net < 16777216L) { 719 addr = net << IN_CLASSC_NSHIFT; 720 mask = IN_CLASSD_NET; 721 } else { 722 addr = net; 723 if ((addr & IN_CLASSA_HOST) == 0) 724 mask = IN_CLASSA_NET; 725 else if ((addr & IN_CLASSB_HOST) == 0) 726 mask = IN_CLASSB_NET; 727 else if ((addr & IN_CLASSC_HOST) == 0) 728 mask = IN_CLASSC_NET; 729 else 730 mask = -1; 731 } 732 isin->sin_addr.s_addr = htonl(addr); 733 sin = &soup->so_mask->sin; 734 sin->sin_addr.s_addr = htonl(mask); 735 sin->sin_len = 0; 736 sin->sin_family = 0; 737 cp = (char *)(&sin->sin_addr + 1); 738 while (*--cp == 0 && cp > (char *)sin) 739 ; 740 sin->sin_len = 1 + cp - (char *)sin; 741 sin->sin_family = AF_INET; 742 } 743 744 #ifdef INET6 745 /* 746 * XXX the function may need more improvement... 747 */ 748 static int 749 inet6_makenetandmask(const struct sockaddr_in6 * const sin6, struct sou *soup) 750 { 751 const char *plen; 752 struct in6_addr in6; 753 754 plen = NULL; 755 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 756 sin6->sin6_scope_id == 0) { 757 plen = "0"; 758 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 759 /* aggregatable global unicast - RFC2374 */ 760 memset(&in6, 0, sizeof(in6)); 761 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 762 plen = "64"; 763 } 764 765 if (!plen || strcmp(plen, "128") == 0) 766 return 1; 767 else { 768 rtm_addrs |= RTA_NETMASK; 769 (void)prefixlen(plen, soup); 770 return 0; 771 } 772 } 773 #endif 774 775 /* 776 * Interpret an argument as a network address of some kind, 777 * returning 1 if a host address, 0 if a network address. 778 */ 779 static int 780 getaddr(int which, const char *s, struct hostent **hpp, struct sou *soup) 781 { 782 sup su; 783 struct hostent *hp; 784 struct netent *np; 785 u_int32_t val; 786 char *t; 787 int afamily; /* local copy of af so we can change it */ 788 789 if (af == AF_UNSPEC) { 790 af = AF_INET; 791 aflen = sizeof(struct sockaddr_in); 792 } 793 afamily = af; 794 rtm_addrs |= which; 795 switch (which) { 796 case RTA_DST: 797 su = soup->so_dst; 798 break; 799 case RTA_GATEWAY: 800 su = soup->so_gate; 801 break; 802 case RTA_NETMASK: 803 su = soup->so_mask; 804 break; 805 case RTA_GENMASK: 806 su = soup->so_genmask; 807 break; 808 case RTA_IFP: 809 su = soup->so_ifp; 810 afamily = AF_LINK; 811 break; 812 case RTA_IFA: 813 su = soup->so_ifa; 814 su->sa.sa_family = af; 815 break; 816 #ifndef SMALL 817 case RTA_TAG: 818 su = soup->so_mpls; 819 afamily = AF_MPLS; 820 break; 821 #endif 822 default: 823 su = NULL; 824 usage("Internal Error"); 825 /*NOTREACHED*/ 826 } 827 su->sa.sa_len = aflen; 828 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 829 if (strcmp(s, "default") == 0) { 830 switch (which) { 831 case RTA_DST: 832 forcenet++; 833 (void)getaddr(RTA_NETMASK, s, 0, soup); 834 break; 835 case RTA_NETMASK: 836 case RTA_GENMASK: 837 su->sa.sa_len = 0; 838 } 839 return 0; 840 } 841 switch (afamily) { 842 #ifdef INET6 843 case AF_INET6: 844 { 845 struct addrinfo hints, *res; 846 char *slash = 0; 847 848 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 849 *slash = '\0'; 850 memset(&hints, 0, sizeof(hints)); 851 hints.ai_family = afamily; /*AF_INET6*/ 852 hints.ai_flags = AI_NUMERICHOST; 853 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 854 if (getaddrinfo(s, "0", &hints, &res) != 0) { 855 hints.ai_flags = 0; 856 if (slash) { 857 *slash = '/'; 858 slash = 0; 859 } 860 if (getaddrinfo(s, "0", &hints, &res) != 0) 861 errx(EXIT_FAILURE, "%s: bad value", s); 862 } 863 if (slash) 864 *slash = '/'; 865 if (sizeof(su->sin6) != res->ai_addrlen) 866 errx(EXIT_FAILURE, "%s: bad value", s); 867 if (res->ai_next) { 868 errx(EXIT_FAILURE, 869 "%s: address resolved to multiple values", s); 870 } 871 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 872 freeaddrinfo(res); 873 inet6_putscopeid(&su->sin6, INET6_IS_ADDR_LINKLOCAL| 874 INET6_IS_ADDR_MC_LINKLOCAL); 875 if (hints.ai_flags == AI_NUMERICHOST) { 876 if (slash) 877 return prefixlen(slash + 1, soup); 878 if (which == RTA_DST) 879 return inet6_makenetandmask(&su->sin6, soup); 880 return 0; 881 } else 882 return 1; 883 } 884 #endif 885 886 case PF_ROUTE: 887 su->sa.sa_len = sizeof(*su); 888 sockaddr(s, &su->sa); 889 return 1; 890 891 #ifndef SMALL 892 case AF_APPLETALK: 893 t = strchr (s, '.'); 894 if (!t) { 895 badataddr: 896 errx(EXIT_FAILURE, "bad address: %s", s); 897 } 898 val = atoi (s); 899 if (val > 65535) 900 goto badataddr; 901 su->sat.sat_addr.s_net = val; 902 val = atoi (t); 903 if (val > 256) 904 goto badataddr; 905 su->sat.sat_addr.s_node = val; 906 rtm_addrs |= RTA_NETMASK; 907 return(forcehost || su->sat.sat_addr.s_node != 0); 908 case AF_MPLS: 909 if (which == RTA_DST) 910 soup->so_dst = readtag(su, s); 911 else if (which == RTA_TAG) 912 soup->so_mpls = readtag(su, s); 913 else 914 errx(EXIT_FAILURE, "MPLS can be used only as " 915 "DST or TAG"); 916 return 1; 917 #endif 918 919 case AF_LINK: 920 link_addr(s, &su->sdl); 921 return 1; 922 923 case AF_INET: 924 default: 925 break; 926 } 927 928 if (hpp == NULL) 929 hpp = &hp; 930 *hpp = NULL; 931 932 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 933 *t = '\0'; 934 if (forcenet == 0) { 935 if ((val = inet_addr(s)) != INADDR_NONE) { 936 inet_makenetandmask(htonl(val), &su->sin, soup); 937 return prefixlen(&t[1], soup); 938 } 939 } else { 940 if ((val = inet_network(s)) != INADDR_NONE) { 941 inet_makenetandmask(val, &su->sin, soup); 942 return prefixlen(&t[1], soup); 943 } 944 } 945 *t = '/'; 946 } 947 if (inet_aton(s, &su->sin.sin_addr) && 948 (which != RTA_DST || forcenet == 0)) { 949 val = su->sin.sin_addr.s_addr; 950 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 951 return 1; 952 else { 953 val = ntohl(val); 954 goto netdone; 955 } 956 } 957 if ((val = inet_network(s)) != INADDR_NONE || 958 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 959 netdone: 960 if (which == RTA_DST) 961 inet_makenetandmask(val, &su->sin, soup); 962 return 0; 963 } 964 hp = gethostbyname(s); 965 if (hp) { 966 *hpp = hp; 967 su->sin.sin_family = hp->h_addrtype; 968 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 969 return 1; 970 } 971 errx(EXIT_FAILURE, "%s: bad value", s); 972 /*NOTREACHED*/ 973 } 974 975 #ifndef SMALL 976 static sup 977 readtag(sup su, const char *s) 978 { 979 char *p, *n, *norig; 980 int mplssize = 0; 981 sup retsu = su; 982 983 n = strdup(s); 984 if (n == NULL) 985 errx(EXIT_FAILURE, "%s: Cannot allocate memory", s); 986 norig = n; 987 for (uint i = 0; i < strlen(n); i++) 988 if(n[i] == ',') 989 mplssize++; 990 991 #define MPLS_NEW_SIZE (sizeof(struct sockaddr_mpls) + \ 992 mplssize * sizeof(union mpls_shim)) 993 994 if (mplssize != 0 && sizeof(union sockunion) < MPLS_NEW_SIZE) { 995 free(su); 996 retsu = malloc(MPLS_NEW_SIZE); 997 retsu->smpls.smpls_family = AF_MPLS; 998 } 999 retsu->smpls.smpls_len = MPLS_NEW_SIZE; 1000 mplssize = 0; 1001 while ((p = strchr(n, ',')) != NULL) { 1002 p[0] = '\0'; 1003 addtag(retsu, n, mplssize); 1004 n = p + 1; 1005 mplssize++; 1006 } 1007 addtag(retsu, n, mplssize); 1008 1009 free(norig); 1010 return retsu; 1011 } 1012 1013 static void 1014 addtag(sup su, const char *s, int where) 1015 { 1016 union mpls_shim *ms = &su->smpls.smpls_addr; 1017 1018 if (atoi(s) < 0 || atoi(s) >= (1 << 20)) 1019 errx(EXIT_FAILURE, "%s: Bad tag", s); 1020 ms[where].s_addr = 0; 1021 ms[where].shim.label = atoi(s); 1022 ms[where].s_addr = htonl(ms[where].s_addr); 1023 } 1024 #endif /* SMALL */ 1025 1026 int 1027 prefixlen(const char *s, struct sou *soup) 1028 { 1029 int len = atoi(s), q, r; 1030 int max; 1031 1032 switch (af) { 1033 case AF_INET: 1034 max = sizeof(struct in_addr) * 8; 1035 break; 1036 #ifdef INET6 1037 case AF_INET6: 1038 max = sizeof(struct in6_addr) * 8; 1039 break; 1040 #endif 1041 default: 1042 errx(EXIT_FAILURE, "prefixlen is not supported with af %d", af); 1043 /*NOTREACHED*/ 1044 } 1045 1046 rtm_addrs |= RTA_NETMASK; 1047 if (len < -1 || len > max) 1048 errx(EXIT_FAILURE, "%s: bad value", s); 1049 1050 q = len >> 3; 1051 r = len & 7; 1052 switch (af) { 1053 case AF_INET: 1054 memset(soup->so_mask, 0, sizeof(*soup->so_mask)); 1055 soup->so_mask->sin.sin_family = AF_INET; 1056 soup->so_mask->sin.sin_len = sizeof(struct sockaddr_in); 1057 soup->so_mask->sin.sin_addr.s_addr = (len == 0 ? 0 1058 : htonl(0xffffffff << (32 - len))); 1059 break; 1060 #ifdef INET6 1061 case AF_INET6: 1062 soup->so_mask->sin6.sin6_family = AF_INET6; 1063 soup->so_mask->sin6.sin6_len = sizeof(struct sockaddr_in6); 1064 memset(&soup->so_mask->sin6.sin6_addr, 0, 1065 sizeof(soup->so_mask->sin6.sin6_addr)); 1066 if (q > 0) 1067 memset(&soup->so_mask->sin6.sin6_addr, 0xff, q); 1068 if (r > 0) 1069 *((u_char *)&soup->so_mask->sin6.sin6_addr + q) = 1070 (0xff00 >> r) & 0xff; 1071 break; 1072 #endif 1073 } 1074 return len == max; 1075 } 1076 1077 #ifndef SMALL 1078 static void 1079 interfaces(void) 1080 { 1081 size_t needed; 1082 int mib[6]; 1083 char *buf, *lim, *next; 1084 struct rt_msghdr *rtm; 1085 1086 mib[0] = CTL_NET; 1087 mib[1] = PF_ROUTE; 1088 mib[2] = 0; /* protocol */ 1089 mib[3] = 0; /* wildcard address family */ 1090 mib[4] = NET_RT_IFLIST; 1091 mib[5] = 0; /* no flags */ 1092 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1093 err(EXIT_FAILURE, "route-sysctl-estimate"); 1094 if (needed) { 1095 if ((buf = malloc(needed)) == NULL) 1096 err(EXIT_FAILURE, "malloc"); 1097 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 1098 err(EXIT_FAILURE, 1099 "actual retrieval of interface table"); 1100 } 1101 lim = buf + needed; 1102 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1103 rtm = (struct rt_msghdr *)next; 1104 print_rtmsg(rtm, rtm->rtm_msglen); 1105 } 1106 free(buf); 1107 } 1108 } 1109 1110 static void 1111 monitor(void) 1112 { 1113 int n; 1114 union { 1115 char msg[2048]; 1116 struct rt_msghdr hdr; 1117 } u; 1118 1119 verbose = 1; 1120 if (debugonly) { 1121 interfaces(); 1122 exit(0); 1123 } 1124 for(;;) { 1125 time_t now; 1126 n = prog_read(sock, &u, sizeof(u)); 1127 now = time(NULL); 1128 (void)printf("got message of size %d on %s", n, ctime(&now)); 1129 print_rtmsg(&u.hdr, n); 1130 } 1131 } 1132 1133 #endif /* SMALL */ 1134 1135 1136 struct { 1137 struct rt_msghdr m_rtm; 1138 char m_space[512]; 1139 } m_rtmsg; 1140 1141 static int 1142 rtmsg(int cmd, int flags, struct sou *soup) 1143 { 1144 static int seq; 1145 int rlen; 1146 char *cp = m_rtmsg.m_space; 1147 int l; 1148 1149 #define NEXTADDR(w, u) \ 1150 if (rtm_addrs & (w)) {\ 1151 l = RT_ROUNDUP(u->sa.sa_len); memmove(cp, u, l); cp += l;\ 1152 if (verbose && ! shortoutput) sodump(u,#u);\ 1153 } 1154 1155 errno = 0; 1156 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1157 if (cmd == 'a') 1158 cmd = RTM_ADD; 1159 else if (cmd == 'c') 1160 cmd = RTM_CHANGE; 1161 else if (cmd == 'g') { 1162 #ifdef SMALL 1163 return -1; 1164 #else /* SMALL */ 1165 cmd = RTM_GET; 1166 if (soup->so_ifp->sa.sa_family == AF_UNSPEC) { 1167 soup->so_ifp->sa.sa_family = AF_LINK; 1168 soup->so_ifp->sa.sa_len = sizeof(struct sockaddr_dl); 1169 rtm_addrs |= RTA_IFP; 1170 } 1171 #endif /* SMALL */ 1172 } else 1173 cmd = RTM_DELETE; 1174 #define rtm m_rtmsg.m_rtm 1175 rtm.rtm_type = cmd; 1176 rtm.rtm_flags = flags; 1177 rtm.rtm_version = RTM_VERSION; 1178 rtm.rtm_seq = ++seq; 1179 rtm.rtm_addrs = rtm_addrs; 1180 rtm.rtm_rmx = rt_metrics; 1181 rtm.rtm_inits = rtm_inits; 1182 1183 if (rtm_addrs & RTA_NETMASK) 1184 mask_addr(soup); 1185 NEXTADDR(RTA_DST, soup->so_dst); 1186 NEXTADDR(RTA_GATEWAY, soup->so_gate); 1187 NEXTADDR(RTA_NETMASK, soup->so_mask); 1188 NEXTADDR(RTA_GENMASK, soup->so_genmask); 1189 NEXTADDR(RTA_IFP, soup->so_ifp); 1190 NEXTADDR(RTA_IFA, soup->so_ifa); 1191 #ifndef SMALL 1192 NEXTADDR(RTA_TAG, soup->so_mpls); 1193 #endif 1194 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1195 if (verbose && ! shortoutput) { 1196 if (rtm_addrs) 1197 putchar('\n'); 1198 print_rtmsg(&rtm, l); 1199 } 1200 if (debugonly) 1201 return 0; 1202 if ((rlen = prog_write(sock, (char *)&m_rtmsg, l)) < 0) { 1203 warnx("writing to routing socket: %s", route_strerror(errno)); 1204 return -1; 1205 } 1206 if (rlen < l) { 1207 warnx("write to routing socket, got %d for rlen", rlen); 1208 return 1; 1209 } 1210 #ifndef SMALL 1211 if (cmd == RTM_GET) { 1212 do { 1213 l = prog_read(sock, 1214 (char *)&m_rtmsg, sizeof(m_rtmsg)); 1215 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1216 if (l < 0) 1217 err(EXIT_FAILURE, "read from routing socket"); 1218 else 1219 return print_getmsg(&rtm, l, soup); 1220 } 1221 #endif /* SMALL */ 1222 #undef rtm 1223 return 0; 1224 } 1225 1226 static void 1227 mask_addr(struct sou *soup) 1228 { 1229 int olen = soup->so_mask->sa.sa_len; 1230 char *cp1 = olen + (char *)soup->so_mask, *cp2; 1231 1232 for (soup->so_mask->sa.sa_len = 0; cp1 > (char *)soup->so_mask; ) 1233 if (*--cp1 != 0) { 1234 soup->so_mask->sa.sa_len = 1 + cp1 - (char *)soup->so_mask; 1235 break; 1236 } 1237 if ((rtm_addrs & RTA_DST) == 0) 1238 return; 1239 switch (soup->so_dst->sa.sa_family) { 1240 case AF_INET: 1241 #ifdef INET6 1242 case AF_INET6: 1243 #endif 1244 #ifndef SMALL 1245 case AF_APPLETALK: 1246 #endif /* SMALL */ 1247 case 0: 1248 return; 1249 } 1250 cp1 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_dst; 1251 cp2 = soup->so_dst->sa.sa_len + 1 + (char *)soup->so_dst; 1252 while (cp2 > cp1) 1253 *--cp2 = 0; 1254 cp2 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_mask; 1255 while (cp1 > soup->so_dst->sa.sa_data) 1256 *--cp1 &= *--cp2; 1257 } 1258 1259 const char * const msgtypes[] = { 1260 [RTM_ADD] = "RTM_ADD: Add Route", 1261 [RTM_DELETE] = "RTM_DELETE: Delete Route", 1262 [RTM_CHANGE] = "RTM_CHANGE: Change Metrics or flags", 1263 [RTM_GET] = "RTM_GET: Report Metrics", 1264 [RTM_LOSING] = "RTM_LOSING: Kernel Suspects Partitioning", 1265 [RTM_REDIRECT] = "RTM_REDIRECT: Told to use different route", 1266 [RTM_MISS] = "RTM_MISS: Lookup failed on this address", 1267 [RTM_LOCK] = "RTM_LOCK: fix specified metrics", 1268 [RTM_OLDADD] = "RTM_OLDADD: caused by SIOCADDRT", 1269 [RTM_OLDDEL] = "RTM_OLDDEL: caused by SIOCDELRT", 1270 [RTM_RESOLVE] = "RTM_RESOLVE: Route created by cloning", 1271 [RTM_NEWADDR] = "RTM_NEWADDR: address being added to iface", 1272 [RTM_DELADDR] = "RTM_DELADDR: address being removed from iface", 1273 [RTM_OOIFINFO] = "RTM_OOIFINFO: iface status change (pre-1.5)", 1274 [RTM_OIFINFO] = "RTM_OIFINFO: iface status change (pre-64bit time)", 1275 [RTM_IFANNOUNCE] = "RTM_IFANNOUNCE: iface arrival/departure", 1276 [RTM_IEEE80211] = "RTM_IEEE80211: IEEE80211 wireless event", 1277 [RTM_IFINFO] = "RTM_IFINFO: iface status change", 1278 [RTM_CHGADDR] = "RTM_CHGADDR: address being changed on iface", 1279 }; 1280 1281 const char metricnames[] = 1282 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1283 const char routeflags[] = 1284 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1285 const char ifnetflags[] = 1286 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1287 const char addrnames[] = 1288 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD\011TAG"; 1289 1290 1291 #ifndef SMALL 1292 static const char * 1293 linkstate(struct if_msghdr *ifm) 1294 { 1295 static char buf[64]; 1296 1297 switch (ifm->ifm_data.ifi_link_state) { 1298 case LINK_STATE_UNKNOWN: 1299 return "carrier: unknown"; 1300 case LINK_STATE_DOWN: 1301 return "carrier: no carrier"; 1302 case LINK_STATE_UP: 1303 return "carrier: active"; 1304 default: 1305 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1306 ifm->ifm_data.ifi_link_state); 1307 return buf; 1308 } 1309 } 1310 #endif /* SMALL */ 1311 1312 static void 1313 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1314 { 1315 struct if_msghdr *ifm; 1316 struct ifa_msghdr *ifam; 1317 struct if_announcemsghdr *ifan; 1318 union { 1319 struct ieee80211_join_event join; 1320 struct ieee80211_leave_event leave; 1321 struct ieee80211_replay_event replay; 1322 struct ieee80211_michael_event michael; 1323 } ev; 1324 size_t evlen = 0; 1325 1326 if (verbose == 0) 1327 return; 1328 if (rtm->rtm_version != RTM_VERSION) { 1329 (void)printf("routing message version %d not understood\n", 1330 rtm->rtm_version); 1331 return; 1332 } 1333 if (msgtypes[rtm->rtm_type]) 1334 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1335 else 1336 (void)printf("#%d: ", rtm->rtm_type); 1337 (void)printf("len %d, ", rtm->rtm_msglen); 1338 switch (rtm->rtm_type) { 1339 case RTM_IFINFO: 1340 ifm = (struct if_msghdr *)rtm; 1341 (void)printf("if# %d, %s, flags: ", ifm->ifm_index, 1342 #ifdef SMALL 1343 "" 1344 #else 1345 linkstate(ifm) 1346 #endif /* SMALL */ 1347 ); 1348 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1349 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1350 break; 1351 case RTM_NEWADDR: 1352 case RTM_DELADDR: 1353 case RTM_CHGADDR: 1354 ifam = (struct ifa_msghdr *)rtm; 1355 (void)printf("metric %d, flags: ", ifam->ifam_metric); 1356 bprintf(stdout, ifam->ifam_flags, routeflags); 1357 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1358 break; 1359 case RTM_IEEE80211: 1360 ifan = (struct if_announcemsghdr *)rtm; 1361 (void)printf("if# %d, what: ", ifan->ifan_index); 1362 switch (ifan->ifan_what) { 1363 case RTM_IEEE80211_ASSOC: 1364 printf("associate"); 1365 break; 1366 case RTM_IEEE80211_REASSOC: 1367 printf("re-associate"); 1368 break; 1369 case RTM_IEEE80211_DISASSOC: 1370 printf("disassociate"); 1371 break; 1372 case RTM_IEEE80211_SCAN: 1373 printf("scan complete"); 1374 break; 1375 case RTM_IEEE80211_JOIN: 1376 evlen = sizeof(ev.join); 1377 printf("join"); 1378 break; 1379 case RTM_IEEE80211_LEAVE: 1380 evlen = sizeof(ev.leave); 1381 printf("leave"); 1382 break; 1383 case RTM_IEEE80211_MICHAEL: 1384 evlen = sizeof(ev.michael); 1385 printf("michael"); 1386 break; 1387 case RTM_IEEE80211_REPLAY: 1388 evlen = sizeof(ev.replay); 1389 printf("replay"); 1390 break; 1391 default: 1392 evlen = 0; 1393 printf("#%d", ifan->ifan_what); 1394 break; 1395 } 1396 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1397 printf(" (truncated)\n"); 1398 break; 1399 } 1400 (void)memcpy(&ev, (ifan + 1), evlen); 1401 switch (ifan->ifan_what) { 1402 case RTM_IEEE80211_JOIN: 1403 case RTM_IEEE80211_LEAVE: 1404 printf(" mac %" PRIETHER, 1405 PRIETHER_ARGS(ev.join.iev_addr)); 1406 break; 1407 case RTM_IEEE80211_REPLAY: 1408 case RTM_IEEE80211_MICHAEL: 1409 printf(" src %" PRIETHER " dst %" PRIETHER 1410 " cipher %" PRIu8 " keyix %" PRIu8, 1411 PRIETHER_ARGS(ev.replay.iev_src), 1412 PRIETHER_ARGS(ev.replay.iev_dst), 1413 ev.replay.iev_cipher, 1414 ev.replay.iev_keyix); 1415 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1416 printf(" key rsc %#" PRIx64 1417 " frame rsc %#" PRIx64, 1418 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1419 } 1420 break; 1421 default: 1422 break; 1423 } 1424 printf("\n"); 1425 break; 1426 case RTM_IFANNOUNCE: 1427 ifan = (struct if_announcemsghdr *)rtm; 1428 (void)printf("if# %d, what: ", ifan->ifan_index); 1429 switch (ifan->ifan_what) { 1430 case IFAN_ARRIVAL: 1431 printf("arrival"); 1432 break; 1433 case IFAN_DEPARTURE: 1434 printf("departure"); 1435 break; 1436 default: 1437 printf("#%d", ifan->ifan_what); 1438 break; 1439 } 1440 printf("\n"); 1441 break; 1442 default: 1443 (void)printf("pid %d, seq %d, errno %d, flags: ", 1444 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1445 bprintf(stdout, rtm->rtm_flags, routeflags); 1446 pmsg_common(rtm); 1447 } 1448 } 1449 1450 #ifndef SMALL 1451 static int 1452 print_getmsg(struct rt_msghdr *rtm, int msglen, struct sou *soup) 1453 { 1454 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL, *mpls = NULL; 1455 struct sockaddr_dl *ifp = NULL; 1456 struct sockaddr *sa; 1457 char *cp; 1458 int i; 1459 1460 if (! shortoutput) { 1461 (void)printf(" route to: %s\n", 1462 routename(&soup->so_dst->sa, nflag)); 1463 } 1464 if (rtm->rtm_version != RTM_VERSION) { 1465 warnx("routing message version %d not understood", 1466 rtm->rtm_version); 1467 return 1; 1468 } 1469 if (rtm->rtm_msglen > msglen) { 1470 warnx("message length mismatch, in packet %d, returned %d", 1471 rtm->rtm_msglen, msglen); 1472 } 1473 if (rtm->rtm_errno) { 1474 warnx("RTM_GET: %s (errno %d)", 1475 strerror(rtm->rtm_errno), rtm->rtm_errno); 1476 return 1; 1477 } 1478 cp = ((char *)(rtm + 1)); 1479 if (rtm->rtm_addrs) 1480 for (i = 1; i; i <<= 1) 1481 if (i & rtm->rtm_addrs) { 1482 sa = (struct sockaddr *)cp; 1483 switch (i) { 1484 case RTA_DST: 1485 dst = sa; 1486 break; 1487 case RTA_GATEWAY: 1488 gate = sa; 1489 break; 1490 case RTA_NETMASK: 1491 mask = sa; 1492 break; 1493 case RTA_IFP: 1494 if (sa->sa_family == AF_LINK && 1495 ((struct sockaddr_dl *)sa)->sdl_nlen) 1496 ifp = (struct sockaddr_dl *)sa; 1497 break; 1498 case RTA_IFA: 1499 ifa = sa; 1500 break; 1501 case RTA_TAG: 1502 mpls = sa; 1503 break; 1504 } 1505 RT_ADVANCE(cp, sa); 1506 } 1507 if (dst && mask) 1508 mask->sa_family = dst->sa_family; /* XXX */ 1509 if (dst && ! shortoutput) 1510 (void)printf("destination: %s\n", 1511 routename(dst, nflag)); 1512 if (mask && ! shortoutput) { 1513 int savenflag = nflag; 1514 1515 nflag = RT_NFLAG; 1516 (void)printf(" mask: %s\n", 1517 routename(mask, nflag)); 1518 nflag = savenflag; 1519 } 1520 if (gate && rtm->rtm_flags & RTF_GATEWAY) { 1521 const char *name; 1522 1523 name = routename(gate, nflag); 1524 if (shortoutput) { 1525 if (*name == '\0') 1526 return 1; 1527 (void)printf("%s\n", name); 1528 } else 1529 (void)printf(" gateway: %s\n", name); 1530 } 1531 if (mpls) { 1532 const char *name; 1533 name = routename(mpls, nflag); 1534 if(shortoutput) { 1535 if (*name == '\0') 1536 return 1; 1537 printf("%s\n", name); 1538 } else 1539 printf(" Tag: %s\n", name); 1540 } 1541 1542 if (ifa && ! shortoutput) 1543 (void)printf(" local addr: %s\n", 1544 routename(ifa, nflag)); 1545 if (ifp && ! shortoutput) 1546 (void)printf(" interface: %.*s\n", 1547 ifp->sdl_nlen, ifp->sdl_data); 1548 if (! shortoutput) { 1549 (void)printf(" flags: "); 1550 bprintf(stdout, rtm->rtm_flags, routeflags); 1551 } 1552 1553 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1554 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1555 1556 if (! shortoutput) { 1557 (void)printf("\n%s\n", "\ 1558 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1559 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1560 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1561 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1562 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1563 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1564 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1565 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1566 if (rtm->rtm_rmx.rmx_expire) 1567 rtm->rtm_rmx.rmx_expire -= time(0); 1568 printf("%8"PRId64"%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1569 } 1570 #undef lock 1571 #undef msec 1572 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1573 1574 if (shortoutput) 1575 return (rtm->rtm_addrs & RTF_GATEWAY) == 0; 1576 else if (verbose) 1577 pmsg_common(rtm); 1578 else if (rtm->rtm_addrs &~ RTA_IGN) { 1579 (void)printf("sockaddrs: "); 1580 bprintf(stdout, rtm->rtm_addrs, addrnames); 1581 putchar('\n'); 1582 } 1583 return 0; 1584 #undef RTA_IGN 1585 } 1586 #endif /* SMALL */ 1587 1588 void 1589 pmsg_common(struct rt_msghdr *rtm) 1590 { 1591 (void)printf("\nlocks: "); 1592 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1593 (void)printf(" inits: "); 1594 bprintf(stdout, rtm->rtm_inits, metricnames); 1595 pmsg_addrs((char *)(rtm + 1), rtm->rtm_addrs); 1596 } 1597 1598 static void 1599 extract_addrs(const char *cp, int addrs, const struct sockaddr *sa[], int *nmfp) 1600 { 1601 int i, nmf = -1; 1602 1603 for (i = 0; i < RTAX_MAX; i++) { 1604 if ((1 << i) & addrs) { 1605 sa[i] = (const struct sockaddr *)cp; 1606 if ((i == RTAX_DST || i == RTAX_IFA) && 1607 nmf == -1) 1608 nmf = sa[i]->sa_family; 1609 RT_ADVANCE(cp, sa[i]); 1610 } else 1611 sa[i] = NULL; 1612 } 1613 1614 if (nmfp != NULL) 1615 *nmfp = nmf; 1616 } 1617 1618 static void 1619 pmsg_addrs(const char *cp, int addrs) 1620 { 1621 const struct sockaddr *sa[RTAX_MAX]; 1622 int i, nmf; 1623 1624 if (addrs != 0) { 1625 (void)printf("\nsockaddrs: "); 1626 bprintf(stdout, addrs, addrnames); 1627 (void)putchar('\n'); 1628 extract_addrs(cp, addrs, sa, &nmf); 1629 for (i = 0; i < RTAX_MAX; i++) { 1630 if (sa[i] == NULL) 1631 continue; 1632 1633 if (i == RTAX_NETMASK && sa[i]->sa_len) 1634 (void)printf(" %s", 1635 netmask_string(sa[i], -1, nmf)); 1636 else 1637 (void)printf(" %s", 1638 routename(sa[i], nflag)); 1639 } 1640 } 1641 (void)putchar('\n'); 1642 (void)fflush(stdout); 1643 } 1644 1645 static void 1646 bprintf(FILE *fp, int b, const char *f) 1647 { 1648 int i; 1649 int gotsome = 0; 1650 const uint8_t *s = (const uint8_t *)f; 1651 1652 if (b == 0) { 1653 fputs("none", fp); 1654 return; 1655 } 1656 while ((i = *s++) != 0) { 1657 if (b & (1 << (i-1))) { 1658 if (gotsome == 0) 1659 i = '<'; 1660 else 1661 i = ','; 1662 (void)putc(i, fp); 1663 gotsome = 1; 1664 for (; (i = *s) > 32; s++) 1665 (void)putc(i, fp); 1666 } else 1667 while (*s > 32) 1668 s++; 1669 } 1670 if (gotsome) 1671 (void)putc('>', fp); 1672 } 1673 1674 int 1675 keyword(const char *cp) 1676 { 1677 struct keytab *kt = keywords; 1678 1679 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1680 kt++; 1681 return kt->kt_i; 1682 } 1683 1684 static void 1685 sodump(sup su, const char *which) 1686 { 1687 #ifdef INET6 1688 char ntop_buf[NI_MAXHOST]; 1689 #endif 1690 1691 switch (su->sa.sa_family) { 1692 case AF_INET: 1693 (void)printf("%s: inet %s; ", 1694 which, inet_ntoa(su->sin.sin_addr)); 1695 break; 1696 #ifndef SMALL 1697 case AF_APPLETALK: 1698 (void)printf("%s: atalk %d.%d; ", 1699 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1700 break; 1701 #endif 1702 case AF_LINK: 1703 (void)printf("%s: link %s; ", 1704 which, link_ntoa(&su->sdl)); 1705 break; 1706 #ifdef INET6 1707 case AF_INET6: 1708 (void)printf("%s: inet6 %s; ", 1709 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 1710 ntop_buf, sizeof(ntop_buf))); 1711 break; 1712 #endif 1713 #ifndef SMALL 1714 case AF_MPLS: 1715 { 1716 union mpls_shim ms; 1717 const union mpls_shim *pms; 1718 int psize = sizeof(struct sockaddr_mpls); 1719 1720 ms.s_addr = ntohl(su->smpls.smpls_addr.s_addr); 1721 printf("%s: mpls %u; ", 1722 which, ms.shim.label); 1723 1724 pms = &su->smpls.smpls_addr; 1725 while(psize < su->smpls.smpls_len) { 1726 pms++; 1727 ms.s_addr = ntohl(pms->s_addr); 1728 printf("%u; ", ms.shim.label); 1729 psize += sizeof(ms); 1730 } 1731 break; 1732 } 1733 #endif /* SMALL */ 1734 default: 1735 (void)printf("%s: (%d) %s; ", 1736 which, su->sa.sa_family, any_ntoa(&su->sa)); 1737 } 1738 (void)fflush(stdout); 1739 } 1740 1741 /* States*/ 1742 #define VIRGIN 0 1743 #define GOTONE 1 1744 #define GOTTWO 2 1745 /* Inputs */ 1746 #define DIGIT (4*0) 1747 #define END (4*1) 1748 #define DELIM (4*2) 1749 1750 static void 1751 sockaddr(const char *addr, struct sockaddr *sa) 1752 { 1753 char *cp = (char *)sa; 1754 int size = sa->sa_len; 1755 char *cplim = cp + size; 1756 int byte = 0, state = VIRGIN, new = 0; 1757 1758 (void)memset(cp, 0, size); 1759 cp++; 1760 do { 1761 if ((*addr >= '0') && (*addr <= '9')) { 1762 new = *addr - '0'; 1763 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1764 new = *addr - 'a' + 10; 1765 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1766 new = *addr - 'A' + 10; 1767 } else if (*addr == 0) 1768 state |= END; 1769 else 1770 state |= DELIM; 1771 addr++; 1772 switch (state /* | INPUT */) { 1773 case GOTTWO | DIGIT: 1774 *cp++ = byte; /*FALLTHROUGH*/ 1775 case VIRGIN | DIGIT: 1776 state = GOTONE; byte = new; continue; 1777 case GOTONE | DIGIT: 1778 state = GOTTWO; byte = new + (byte << 4); continue; 1779 default: /* | DELIM */ 1780 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1781 case GOTONE | END: 1782 case GOTTWO | END: 1783 *cp++ = byte; /* FALLTHROUGH */ 1784 case VIRGIN | END: 1785 break; 1786 } 1787 break; 1788 } while (cp < cplim); 1789 sa->sa_len = cp - (char *)sa; 1790 } 1791
Indexes created Fri Sep 26 20:09:58 GMT 2025