1 /* $NetBSD: route.c,v 1.169 2022/04/10 09:50:45 andvar 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 1.169 2022/04/10 09:50:45 andvar 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/sysctl.h> 51 52 #include <net/if.h> 53 #include <net/route.h> 54 #include <net/if_dl.h> 55 #include <net80211/ieee80211_netbsd.h> 56 #include <netinet/in.h> 57 #include <netinet/in_var.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 #include <util.h> 73 74 #include "keywords.h" 75 #include "extern.h" 76 #include "prog_ops.h" 77 #include "rtutil.h" 78 79 union sockunion { 80 struct sockaddr sa; 81 struct sockaddr_in sin; 82 #ifdef INET6 83 struct sockaddr_in6 sin6; 84 #endif 85 struct sockaddr_at sat; 86 struct sockaddr_dl sdl; 87 #ifndef SMALL 88 struct sockaddr_mpls smpls; 89 #endif /* SMALL */ 90 struct sockaddr_storage sstorage; 91 }; 92 93 typedef union sockunion *sup; 94 95 struct sou { 96 union sockunion *so_dst, *so_gate, *so_mask, *so_genmask, *so_ifa, 97 *so_ifp, *so_mpls; 98 }; 99 100 static const char *route_strerror(int); 101 static void set_metric(const char *, int); 102 static int newroute(int, char *const *); 103 static void inet_makenetandmask(u_int32_t, struct sockaddr_in *, struct sou *); 104 #ifdef INET6 105 static int inet6_makenetandmask(const struct sockaddr_in6 *, struct sou *); 106 #endif 107 static int getaddr(int, const char *, struct hostent **, struct sou *); 108 static int flushroutes(int, char *const [], int); 109 static char *netmask_string(const struct sockaddr *, int, int); 110 static int prefixlen(const char *, struct sou *); 111 #ifndef SMALL 112 static void interfaces(void); 113 static void monitor(int, char * const *); 114 static int print_getmsg(struct rt_msghdr *, int, struct sou *); 115 static const char *linkstate(struct if_msghdr *); 116 static sup readtag(sup, const char *); 117 static void addtag(sup, const char *, int); 118 #endif /* SMALL */ 119 static int rtmsg(int, int, struct sou *); 120 static void mask_addr(struct sou *); 121 static void print_rtmsg(struct rt_msghdr *, int); 122 static void pmsg_common(struct rt_msghdr *); 123 static void pmsg_addrs(const char *, int); 124 static void bprintf(FILE *, int, const char *); 125 static void sodump(sup, const char *); 126 static void sockaddr(const char *, struct sockaddr *); 127 128 int pid, rtm_addrs; 129 int sock; 130 int forcehost, forcenet, doflush, af; 131 int iflag, Lflag, nflag, qflag, tflag, Sflag, Tflag; 132 int verbose, aflen = sizeof(struct sockaddr_in), rtag; 133 int locking, lockrest, debugonly, shortoutput; 134 struct rt_metrics rt_metrics; 135 int rtm_inits; 136 short ns_nullh[] = {0,0,0}; 137 short ns_bh[] = {-1,-1,-1}; 138 139 static const char opts[] = "dfLnqSsTtv"; 140 141 void 142 usage(const char *cp) 143 { 144 145 if (cp) 146 warnx("botched keyword: %s", cp); 147 (void)fprintf(stderr, 148 "Usage: %s [-%s] cmd [[-<qualifiers>] args]\n", getprogname(), opts); 149 exit(1); 150 /* NOTREACHED */ 151 } 152 153 #define PRIETHER "02x:%02x:%02x:%02x:%02x:%02x" 154 #define PRIETHER_ARGS(__enaddr) (__enaddr)[0], (__enaddr)[1], (__enaddr)[2], \ 155 (__enaddr)[3], (__enaddr)[4], (__enaddr)[5] 156 157 int 158 main(int argc, char * const *argv) 159 { 160 int ch; 161 162 if (argc < 2) 163 usage(NULL); 164 165 while ((ch = getopt(argc, argv, opts)) != -1) 166 switch (ch) { 167 case 'd': 168 debugonly = 1; 169 break; 170 case 'f': 171 doflush = 1; 172 break; 173 case 'L': 174 Lflag = RT_LFLAG; 175 break; 176 case 'n': 177 nflag = RT_NFLAG; 178 break; 179 case 'q': 180 qflag = 1; 181 break; 182 case 'S': 183 Sflag = 1; 184 break; 185 case 's': 186 shortoutput = 1; 187 break; 188 case 'T': 189 Tflag = RT_TFLAG; 190 break; 191 case 't': 192 tflag = 1; 193 break; 194 case 'v': 195 verbose = RT_VFLAG; 196 break; 197 case '?': 198 default: 199 usage(NULL); 200 /*NOTREACHED*/ 201 } 202 argc -= optind; 203 argv += optind; 204 205 if (prog_init && prog_init() == -1) 206 err(1, "init failed"); 207 208 pid = prog_getpid(); 209 if (tflag) 210 sock = prog_open("/dev/null", O_WRONLY, 0); 211 else { 212 int on = 1; 213 214 sock = prog_socket(PF_ROUTE, SOCK_RAW, 0); 215 if (prog_setsockopt(sock, SOL_SOCKET, SO_RERROR, 216 &on, sizeof(on)) == -1) 217 warn("SO_RERROR"); 218 } 219 if (sock < 0) 220 err(EXIT_FAILURE, "socket"); 221 222 if (*argv == NULL) { 223 if (doflush) 224 ch = K_FLUSH; 225 else 226 goto no_cmd; 227 } else 228 ch = keyword(*argv); 229 230 switch (ch) { 231 #ifndef SMALL 232 case K_GET: 233 #endif /* SMALL */ 234 case K_CHANGE: 235 case K_ADD: 236 case K_DELETE: 237 if (doflush) 238 (void)flushroutes(1, argv, 0); 239 return newroute(argc, argv); 240 241 case K_SHOW: 242 show(argc, argv, Lflag|nflag|Tflag|verbose); 243 return 0; 244 245 #ifndef SMALL 246 case K_MONITOR: 247 monitor(argc, argv); 248 return 0; 249 250 #endif /* SMALL */ 251 case K_FLUSH: 252 return flushroutes(argc, argv, 0); 253 254 case K_FLUSHALL: 255 return flushroutes(argc, argv, 1); 256 no_cmd: 257 default: 258 usage(*argv); 259 /*NOTREACHED*/ 260 } 261 } 262 263 static char * 264 netmask_string(const struct sockaddr *mask, int len, int family) 265 { 266 static char smask[INET6_ADDRSTRLEN]; 267 struct sockaddr_in nsin; 268 struct sockaddr_in6 nsin6; 269 270 if (len >= 0) 271 snprintf(smask, sizeof(smask), "%d", len); 272 else { 273 switch (family) { 274 case AF_INET: 275 memset(&nsin, 0, sizeof(nsin)); 276 memcpy(&nsin, mask, mask->sa_len); 277 snprintf(smask, sizeof(smask), "%s", 278 inet_ntoa(nsin.sin_addr)); 279 break; 280 case AF_INET6: 281 memset(&nsin6, 0, sizeof(nsin6)); 282 memcpy(&nsin6, mask, mask->sa_len); 283 inet_ntop(family, &nsin6.sin6_addr, smask, 284 sizeof(smask)); 285 break; 286 default: 287 snprintf(smask, sizeof(smask), "%s", any_ntoa(mask)); 288 } 289 } 290 291 return smask; 292 } 293 /* 294 * Purge all entries in the routing tables not 295 * associated with network interfaces. 296 */ 297 static int 298 flushroutes(int argc, char * const argv[], int doall) 299 { 300 struct sockaddr *sa; 301 size_t needed; 302 int flags, mib[6], rlen, seqno; 303 char *buf, *next, *lim; 304 const char *afname; 305 struct rt_msghdr *rtm; 306 307 flags = 0; 308 af = AF_UNSPEC; 309 /* Don't want to read back our messages */ 310 prog_shutdown(sock, SHUT_RD); 311 parse_show_opts(argc, argv, &af, &flags, &afname, false); 312 mib[0] = CTL_NET; 313 mib[1] = PF_ROUTE; 314 mib[2] = 0; /* protocol */ 315 mib[3] = 0; /* wildcard address family */ 316 mib[4] = NET_RT_DUMP; 317 mib[5] = 0; /* no flags */ 318 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 319 err(EXIT_FAILURE, "route-sysctl-estimate"); 320 buf = lim = NULL; 321 if (needed) { 322 if ((buf = malloc(needed)) == NULL) 323 err(EXIT_FAILURE, "malloc"); 324 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 325 err(EXIT_FAILURE, "actual retrieval of routing table"); 326 lim = buf + needed; 327 } 328 if (verbose) { 329 (void)printf("Examining routing table from sysctl\n"); 330 if (af != AF_UNSPEC) 331 printf("(address family %s)\n", afname); 332 } 333 if (needed == 0) 334 return 0; 335 seqno = 0; /* ??? */ 336 for (next = buf; next < lim; next += rtm->rtm_msglen) { 337 rtm = (struct rt_msghdr *)next; 338 sa = (struct sockaddr *)(rtm + 1); 339 if (verbose) 340 print_rtmsg(rtm, rtm->rtm_msglen); 341 if ((rtm->rtm_flags & flags) != flags) 342 continue; 343 if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC)) && !doall) 344 continue; 345 if (af != AF_UNSPEC && sa->sa_family != af) 346 continue; 347 if (debugonly) 348 continue; 349 rtm->rtm_type = RTM_DELETE; 350 rtm->rtm_seq = seqno; 351 do { 352 rlen = prog_write(sock, next, rtm->rtm_msglen); 353 } while (rlen == -1 && errno == ENOBUFS); 354 if (rlen == -1) { 355 warnx("writing to routing socket: %s", 356 route_strerror(errno)); 357 return 1; 358 } 359 if (rlen < (int)rtm->rtm_msglen) { 360 warnx("write to routing socket, got %d for rlen", rlen); 361 return 1; 362 } 363 seqno++; 364 if (qflag) 365 continue; 366 if (verbose) 367 print_rtmsg(rtm, rlen); 368 else { 369 (void)printf("%-20.20s ", netname(sa, NULL, nflag)); 370 sa = (struct sockaddr *)(RT_ROUNDUP(sa->sa_len) + 371 (char *)sa); 372 (void)printf("%-20.20s ", routename(sa, nflag)); 373 (void)printf("done\n"); 374 } 375 } 376 free(buf); 377 return 0; 378 } 379 380 static const char * 381 route_strerror(int error) 382 { 383 384 switch (error) { 385 case ESRCH: 386 return "not in table"; 387 case EBUSY: 388 return "entry in use"; 389 case ENOBUFS: 390 return "routing table overflow"; 391 default: 392 return strerror(error); 393 } 394 } 395 396 static void 397 set_metric(const char *value, int key) 398 { 399 int flag = 0; 400 uint64_t noval, *valp = &noval; 401 402 switch (key) { 403 #define caseof(x, y, z) \ 404 case x: valp = (uint64_t *)&rt_metrics.z; flag = y; break 405 caseof(K_MTU, RTV_MTU, rmx_mtu); 406 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 407 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 408 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 409 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 410 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 411 caseof(K_RTT, RTV_RTT, rmx_rtt); 412 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 413 } 414 rtm_inits |= flag; 415 if (lockrest || locking) 416 rt_metrics.rmx_locks |= flag; 417 if (locking) 418 locking = 0; 419 *valp = strtoul(value, NULL, 0); 420 } 421 422 static int 423 newroute(int argc, char *const *argv) 424 { 425 const char *cmd, *dest = "", *gateway = ""; 426 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 427 int key; 428 struct hostent *hp = 0; 429 struct sou sou, *soup = &sou; 430 431 sou.so_dst = calloc(1, sizeof(union sockunion)); 432 sou.so_gate = calloc(1, sizeof(union sockunion)); 433 sou.so_mask = calloc(1, sizeof(union sockunion)); 434 sou.so_genmask = calloc(1, sizeof(union sockunion)); 435 sou.so_ifa = calloc(1, sizeof(union sockunion)); 436 sou.so_ifp = calloc(1, sizeof(union sockunion)); 437 sou.so_mpls = calloc(1, sizeof(union sockunion)); 438 439 if (sou.so_dst == NULL || sou.so_gate == NULL || sou.so_mask == NULL || 440 sou.so_genmask == NULL || sou.so_ifa == NULL || sou.so_ifp == NULL || 441 sou.so_mpls == NULL) 442 errx(EXIT_FAILURE, "Cannot allocate memory"); 443 444 cmd = argv[0]; 445 af = AF_UNSPEC; 446 if (*cmd != 'g') { 447 /* Don't want to read back our messages */ 448 prog_shutdown(sock, SHUT_RD); 449 } 450 while (--argc > 0) { 451 if (**(++argv)== '-') { 452 switch (key = keyword(1 + *argv)) { 453 454 case K_SA: 455 af = PF_ROUTE; 456 aflen = sizeof(union sockunion); 457 break; 458 459 #ifndef SMALL 460 case K_ATALK: 461 af = AF_APPLETALK; 462 aflen = sizeof(struct sockaddr_at); 463 break; 464 #endif 465 466 case K_INET: 467 af = AF_INET; 468 aflen = sizeof(struct sockaddr_in); 469 break; 470 471 #ifdef INET6 472 case K_INET6: 473 af = AF_INET6; 474 aflen = sizeof(struct sockaddr_in6); 475 break; 476 #endif 477 478 case K_LINK: 479 af = AF_LINK; 480 aflen = sizeof(struct sockaddr_dl); 481 break; 482 483 #ifndef SMALL 484 case K_MPLS: 485 af = AF_MPLS; 486 aflen = sizeof(struct sockaddr_mpls); 487 break; 488 case K_TAG: 489 if (!--argc) 490 usage(1+*argv); 491 af = AF_MPLS; 492 aflen = sizeof(struct sockaddr_mpls); 493 (void)getaddr(RTA_TAG, *++argv, 0, soup); 494 break; 495 #endif /* SMALL */ 496 497 case K_IFACE: 498 case K_INTERFACE: 499 iflag++; 500 break; 501 case K_NOSTATIC: 502 flags &= ~RTF_STATIC; 503 break; 504 case K_LOCK: 505 locking = 1; 506 break; 507 case K_LOCKREST: 508 lockrest = 1; 509 break; 510 case K_HOST: 511 forcehost++; 512 break; 513 case K_REJECT: 514 flags |= RTF_REJECT; 515 break; 516 case K_NOREJECT: 517 flags &= ~RTF_REJECT; 518 break; 519 case K_BLACKHOLE: 520 flags |= RTF_BLACKHOLE; 521 break; 522 case K_NOBLACKHOLE: 523 flags &= ~RTF_BLACKHOLE; 524 break; 525 case K_PROTO1: 526 flags |= RTF_PROTO1; 527 break; 528 case K_PROTO2: 529 flags |= RTF_PROTO2; 530 break; 531 case K_PROXY: 532 flags |= RTF_ANNOUNCE; 533 break; 534 case K_CONNECTED: 535 flags |= RTF_CONNECTED; 536 break; 537 case K_NOCONNECTED: 538 flags &= ~RTF_CONNECTED; 539 break; 540 case K_STATIC: 541 flags |= RTF_STATIC; 542 break; 543 case K_IFA: 544 if (!--argc) 545 usage(1+*argv); 546 (void)getaddr(RTA_IFA, *++argv, 0, soup); 547 break; 548 case K_IFP: 549 if (!--argc) 550 usage(1+*argv); 551 (void)getaddr(RTA_IFP, *++argv, 0, soup); 552 break; 553 case K_GENMASK: 554 if (!--argc) 555 usage(1+*argv); 556 (void)getaddr(RTA_GENMASK, *++argv, 0, soup); 557 break; 558 case K_GATEWAY: 559 if (!--argc) 560 usage(1+*argv); 561 (void)getaddr(RTA_GATEWAY, *++argv, 0, soup); 562 break; 563 case K_DST: 564 if (!--argc) 565 usage(1+*argv); 566 ishost = getaddr(RTA_DST, *++argv, &hp, soup); 567 dest = *argv; 568 break; 569 case K_NETMASK: 570 if (!--argc) 571 usage(1+*argv); 572 (void)getaddr(RTA_NETMASK, *++argv, 0, soup); 573 /* FALLTHROUGH */ 574 case K_NET: 575 forcenet++; 576 break; 577 case K_PREFIXLEN: 578 if (!--argc) 579 usage(1+*argv); 580 ishost = prefixlen(*++argv, soup); 581 break; 582 case K_MTU: 583 case K_HOPCOUNT: 584 case K_EXPIRE: 585 case K_RECVPIPE: 586 case K_SENDPIPE: 587 case K_SSTHRESH: 588 case K_RTT: 589 case K_RTTVAR: 590 if (!--argc) 591 usage(1+*argv); 592 set_metric(*++argv, key); 593 break; 594 default: 595 usage(1+*argv); 596 } 597 } else { 598 if ((rtm_addrs & RTA_DST) == 0) { 599 dest = *argv; 600 ishost = getaddr(RTA_DST, *argv, &hp, soup); 601 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 602 gateway = *argv; 603 (void)getaddr(RTA_GATEWAY, *argv, &hp, soup); 604 } else { 605 ret = atoi(*argv); 606 607 if (ret == 0) { 608 if (strcmp(*argv, "0") == 0) { 609 if (!qflag) { 610 warnx("%s, %s", 611 "old usage of trailing 0", 612 "assuming route to if"); 613 } 614 } else 615 usage(NULL); 616 iflag = 1; 617 continue; 618 } else if (ret > 0 && ret < 10) { 619 if (!qflag) { 620 warnx("%s, %s", 621 "old usage of trailing digit", 622 "assuming route via gateway"); 623 } 624 iflag = 0; 625 continue; 626 } 627 (void)getaddr(RTA_NETMASK, *argv, 0, soup); 628 } 629 } 630 } 631 if ((rtm_addrs & RTA_DST) == 0) 632 errx(EXIT_FAILURE, "missing destination specification"); 633 if (*cmd == 'a' && (rtm_addrs & RTA_GATEWAY) == 0) 634 errx(EXIT_FAILURE, "missing gateway specification"); 635 if (forcehost && forcenet) 636 errx(EXIT_FAILURE, "-host and -net conflict"); 637 else if (forcehost) 638 ishost = 1; 639 else if (forcenet) 640 ishost = 0; 641 flags |= RTF_UP; 642 if (ishost) 643 flags |= RTF_HOST; 644 if (iflag == 0) 645 flags |= RTF_GATEWAY; 646 for (attempts = 1; ; attempts++) { 647 errno = 0; 648 if ((ret = rtmsg(*cmd, flags, soup)) == 0) 649 break; 650 if (errno != ENETUNREACH && errno != ESRCH) 651 break; 652 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 653 hp->h_addr_list++; 654 memmove(&soup->so_gate->sin.sin_addr, hp->h_addr_list[0], 655 hp->h_length); 656 } else 657 break; 658 } 659 if (*cmd == 'g' || qflag) 660 goto out; 661 662 oerrno = errno; 663 (void)printf("%s %s %s", cmd, ishost? "host" : "net", dest); 664 if (*gateway) { 665 (void)printf(": gateway %s", gateway); 666 if (attempts > 1 && ret == 0 && af == AF_INET) 667 (void)printf(" (%s)", 668 inet_ntoa(soup->so_gate->sin.sin_addr)); 669 } 670 if (ret == 0) 671 (void)printf("\n"); 672 else 673 (void)printf(": %s\n", route_strerror(oerrno)); 674 out: 675 free(sou.so_dst); 676 free(sou.so_gate); 677 free(sou.so_mask); 678 free(sou.so_genmask); 679 free(sou.so_ifa); 680 free(sou.so_ifp); 681 free(sou.so_mpls); 682 683 return ret != 0; 684 } 685 686 static void 687 inet_makenetandmask(const u_int32_t net, struct sockaddr_in * const isin, 688 struct sou *soup) 689 { 690 struct sockaddr_in *sin; 691 u_int32_t addr, mask = 0; 692 char *cp; 693 694 rtm_addrs |= RTA_NETMASK; 695 if (net == 0) 696 mask = addr = 0; 697 else if (net < 128) { 698 addr = net << IN_CLASSA_NSHIFT; 699 mask = IN_CLASSA_NET; 700 } else if (net < 192) { 701 addr = net << IN_CLASSA_NSHIFT; 702 mask = IN_CLASSB_NET; 703 } else if (net < 224) { 704 addr = net << IN_CLASSA_NSHIFT; 705 mask = IN_CLASSC_NET; 706 } else if (net < 256) { 707 addr = net << IN_CLASSA_NSHIFT; 708 mask = IN_CLASSD_NET; 709 } else if (net < 49152) { /* 192 * 256 */ 710 addr = net << IN_CLASSB_NSHIFT; 711 mask = IN_CLASSB_NET; 712 } else if (net < 57344) { /* 224 * 256 */ 713 addr = net << IN_CLASSB_NSHIFT; 714 mask = IN_CLASSC_NET; 715 } else if (net < 65536) { 716 addr = net << IN_CLASSB_NSHIFT; 717 mask = IN_CLASSB_NET; 718 } else if (net < 14680064L) { /* 224 * 65536 */ 719 addr = net << IN_CLASSC_NSHIFT; 720 mask = IN_CLASSC_NET; 721 } else if (net < 16777216L) { 722 addr = net << IN_CLASSC_NSHIFT; 723 mask = IN_CLASSD_NET; 724 } else { 725 addr = net; 726 if ((addr & IN_CLASSA_HOST) == 0) 727 mask = IN_CLASSA_NET; 728 else if ((addr & IN_CLASSB_HOST) == 0) 729 mask = IN_CLASSB_NET; 730 else if ((addr & IN_CLASSC_HOST) == 0) 731 mask = IN_CLASSC_NET; 732 else 733 mask = -1; 734 } 735 isin->sin_addr.s_addr = htonl(addr); 736 sin = &soup->so_mask->sin; 737 sin->sin_addr.s_addr = htonl(mask); 738 sin->sin_len = 0; 739 sin->sin_family = 0; 740 cp = (char *)(&sin->sin_addr + 1); 741 while (*--cp == 0 && cp > (char *)sin) 742 ; 743 sin->sin_len = 1 + cp - (char *)sin; 744 sin->sin_family = AF_INET; 745 } 746 747 #ifdef INET6 748 /* 749 * XXX the function may need more improvement... 750 */ 751 static int 752 inet6_makenetandmask(const struct sockaddr_in6 * const sin6, struct sou *soup) 753 { 754 const char *plen; 755 struct in6_addr in6; 756 757 plen = NULL; 758 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 759 sin6->sin6_scope_id == 0) { 760 plen = "0"; 761 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 762 /* aggregatable global unicast - RFC2374 */ 763 memset(&in6, 0, sizeof(in6)); 764 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 765 plen = "64"; 766 } 767 768 if (!plen || strcmp(plen, "128") == 0) 769 return 1; 770 else { 771 rtm_addrs |= RTA_NETMASK; 772 (void)prefixlen(plen, soup); 773 return 0; 774 } 775 } 776 #endif 777 778 /* 779 * Interpret an argument as a network address of some kind, 780 * returning 1 if a host address, 0 if a network address. 781 */ 782 static int 783 getaddr(int which, const char *s, struct hostent **hpp, struct sou *soup) 784 { 785 sup su; 786 struct hostent *hp; 787 struct netent *np; 788 u_int32_t val; 789 char *t; 790 int afamily; /* local copy of af so we can change it */ 791 792 if (af == AF_UNSPEC) { 793 af = AF_INET; 794 aflen = sizeof(struct sockaddr_in); 795 } 796 afamily = af; 797 rtm_addrs |= which; 798 switch (which) { 799 case RTA_DST: 800 su = soup->so_dst; 801 break; 802 case RTA_GATEWAY: 803 su = soup->so_gate; 804 break; 805 case RTA_NETMASK: 806 su = soup->so_mask; 807 break; 808 case RTA_GENMASK: 809 su = soup->so_genmask; 810 break; 811 case RTA_IFP: 812 su = soup->so_ifp; 813 afamily = AF_LINK; 814 break; 815 case RTA_IFA: 816 su = soup->so_ifa; 817 su->sa.sa_family = af; 818 break; 819 #ifndef SMALL 820 case RTA_TAG: 821 su = soup->so_mpls; 822 afamily = AF_MPLS; 823 break; 824 #endif 825 default: 826 su = NULL; 827 usage("Internal Error"); 828 /*NOTREACHED*/ 829 } 830 su->sa.sa_len = aflen; 831 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 832 if (strcmp(s, "default") == 0) { 833 switch (which) { 834 case RTA_DST: 835 forcenet++; 836 (void)getaddr(RTA_NETMASK, s, 0, soup); 837 break; 838 case RTA_NETMASK: 839 case RTA_GENMASK: 840 su->sa.sa_len = 0; 841 } 842 return 0; 843 } 844 switch (afamily) { 845 #ifdef INET6 846 case AF_INET6: 847 { 848 struct addrinfo hints, *res; 849 char *slash = 0; 850 851 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 852 *slash = '\0'; 853 memset(&hints, 0, sizeof(hints)); 854 hints.ai_family = afamily; /*AF_INET6*/ 855 hints.ai_flags = AI_NUMERICHOST; 856 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 857 if (getaddrinfo(s, "0", &hints, &res) != 0) { 858 hints.ai_flags = 0; 859 if (slash) { 860 *slash = '/'; 861 slash = 0; 862 } 863 if (getaddrinfo(s, "0", &hints, &res) != 0) 864 errx(EXIT_FAILURE, "%s: bad value", s); 865 } 866 if (slash) 867 *slash = '/'; 868 if (sizeof(su->sin6) != res->ai_addrlen) 869 errx(EXIT_FAILURE, "%s: bad value", s); 870 if (res->ai_next) { 871 errx(EXIT_FAILURE, 872 "%s: address resolved to multiple values", s); 873 } 874 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 875 freeaddrinfo(res); 876 inet6_putscopeid(&su->sin6, INET6_IS_ADDR_LINKLOCAL| 877 INET6_IS_ADDR_MC_LINKLOCAL); 878 if (hints.ai_flags == AI_NUMERICHOST) { 879 if (slash) 880 return prefixlen(slash + 1, soup); 881 if (which == RTA_DST) 882 return inet6_makenetandmask(&su->sin6, soup); 883 return 0; 884 } else 885 return 1; 886 } 887 #endif 888 889 case PF_ROUTE: 890 su->sa.sa_len = sizeof(*su); 891 sockaddr(s, &su->sa); 892 return 1; 893 894 #ifndef SMALL 895 case AF_APPLETALK: 896 t = strchr (s, '.'); 897 if (!t) { 898 badataddr: 899 errx(EXIT_FAILURE, "bad address: %s", s); 900 } 901 val = atoi (s); 902 if (val > 65535) 903 goto badataddr; 904 su->sat.sat_addr.s_net = val; 905 val = atoi (t); 906 if (val > 256) 907 goto badataddr; 908 su->sat.sat_addr.s_node = val; 909 rtm_addrs |= RTA_NETMASK; 910 return(forcehost || su->sat.sat_addr.s_node != 0); 911 case AF_MPLS: 912 if (which == RTA_DST) 913 soup->so_dst = readtag(su, s); 914 else if (which == RTA_TAG) 915 soup->so_mpls = readtag(su, s); 916 else 917 errx(EXIT_FAILURE, "MPLS can be used only as " 918 "DST or TAG"); 919 return 1; 920 #endif 921 922 case AF_LINK: 923 link_addr(s, &su->sdl); 924 return 1; 925 926 case AF_INET: 927 default: 928 break; 929 } 930 931 if (hpp == NULL) 932 hpp = &hp; 933 *hpp = NULL; 934 935 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 936 *t = '\0'; 937 if (forcenet == 0) { 938 if ((val = inet_addr(s)) != INADDR_NONE) { 939 inet_makenetandmask(htonl(val), &su->sin, soup); 940 return prefixlen(&t[1], soup); 941 } 942 } else { 943 if ((val = inet_network(s)) != INADDR_NONE) { 944 inet_makenetandmask(val, &su->sin, soup); 945 return prefixlen(&t[1], soup); 946 } 947 } 948 *t = '/'; 949 } 950 if (inet_aton(s, &su->sin.sin_addr) && 951 (which != RTA_DST || forcenet == 0)) { 952 val = su->sin.sin_addr.s_addr; 953 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 954 return 1; 955 else { 956 val = ntohl(val); 957 goto netdone; 958 } 959 } 960 if ((val = inet_network(s)) != INADDR_NONE || 961 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 962 netdone: 963 if (which == RTA_DST) 964 inet_makenetandmask(val, &su->sin, soup); 965 return 0; 966 } 967 hp = gethostbyname(s); 968 if (hp) { 969 *hpp = hp; 970 su->sin.sin_family = hp->h_addrtype; 971 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 972 return 1; 973 } 974 errx(EXIT_FAILURE, "%s: bad value", s); 975 /*NOTREACHED*/ 976 } 977 978 #ifndef SMALL 979 static sup 980 readtag(sup su, const char *s) 981 { 982 char *p, *n, *norig; 983 int mplssize = 0; 984 sup retsu = su; 985 986 n = strdup(s); 987 if (n == NULL) 988 errx(EXIT_FAILURE, "%s: Cannot allocate memory", s); 989 norig = n; 990 for (uint i = 0; i < strlen(n); i++) 991 if(n[i] == ',') 992 mplssize++; 993 994 #define MPLS_NEW_SIZE (sizeof(struct sockaddr_mpls) + \ 995 mplssize * sizeof(union mpls_shim)) 996 997 if (mplssize != 0 && sizeof(union sockunion) < MPLS_NEW_SIZE) { 998 free(su); 999 retsu = malloc(MPLS_NEW_SIZE); 1000 retsu->smpls.smpls_family = AF_MPLS; 1001 } 1002 retsu->smpls.smpls_len = MPLS_NEW_SIZE; 1003 mplssize = 0; 1004 while ((p = strchr(n, ',')) != NULL) { 1005 p[0] = '\0'; 1006 addtag(retsu, n, mplssize); 1007 n = p + 1; 1008 mplssize++; 1009 } 1010 addtag(retsu, n, mplssize); 1011 1012 free(norig); 1013 return retsu; 1014 } 1015 1016 static void 1017 addtag(sup su, const char *s, int where) 1018 { 1019 union mpls_shim *ms = &su->smpls.smpls_addr; 1020 1021 if (atoi(s) < 0 || atoi(s) >= (1 << 20)) 1022 errx(EXIT_FAILURE, "%s: Bad tag", s); 1023 ms[where].s_addr = 0; 1024 ms[where].shim.label = atoi(s); 1025 ms[where].s_addr = htonl(ms[where].s_addr); 1026 } 1027 #endif /* SMALL */ 1028 1029 int 1030 prefixlen(const char *s, struct sou *soup) 1031 { 1032 int max, len = atoi(s); 1033 #ifdef INET6 1034 int q, r; 1035 #endif 1036 1037 switch (af) { 1038 case AF_INET: 1039 max = sizeof(struct in_addr) * 8; 1040 break; 1041 #ifdef INET6 1042 case AF_INET6: 1043 max = sizeof(struct in6_addr) * 8; 1044 break; 1045 #endif 1046 default: 1047 errx(EXIT_FAILURE, "prefixlen is not supported with af %d", af); 1048 /*NOTREACHED*/ 1049 } 1050 1051 rtm_addrs |= RTA_NETMASK; 1052 if (len < -1 || len > max) 1053 errx(EXIT_FAILURE, "%s: bad value", s); 1054 1055 #ifdef INET6 1056 q = len >> 3; 1057 r = len & 7; 1058 #endif 1059 switch (af) { 1060 case AF_INET: 1061 memset(soup->so_mask, 0, sizeof(*soup->so_mask)); 1062 soup->so_mask->sin.sin_family = AF_INET; 1063 soup->so_mask->sin.sin_len = sizeof(struct sockaddr_in); 1064 soup->so_mask->sin.sin_addr.s_addr = (len == 0 ? 0 1065 : htonl(0xffffffff << (32 - len))); 1066 break; 1067 #ifdef INET6 1068 case AF_INET6: 1069 soup->so_mask->sin6.sin6_family = AF_INET6; 1070 soup->so_mask->sin6.sin6_len = sizeof(struct sockaddr_in6); 1071 memset(&soup->so_mask->sin6.sin6_addr, 0, 1072 sizeof(soup->so_mask->sin6.sin6_addr)); 1073 if (q > 0) 1074 memset(&soup->so_mask->sin6.sin6_addr, 0xff, q); 1075 if (r > 0) 1076 *((u_char *)&soup->so_mask->sin6.sin6_addr + q) = 1077 (0xff00 >> r) & 0xff; 1078 break; 1079 #endif 1080 } 1081 return len == max; 1082 } 1083 1084 #ifndef SMALL 1085 static void 1086 interfaces(void) 1087 { 1088 size_t needed; 1089 int mib[6]; 1090 char *buf, *lim, *next; 1091 struct rt_msghdr *rtm; 1092 1093 mib[0] = CTL_NET; 1094 mib[1] = PF_ROUTE; 1095 mib[2] = 0; /* protocol */ 1096 mib[3] = 0; /* wildcard address family */ 1097 mib[4] = NET_RT_IFLIST; 1098 mib[5] = 0; /* no flags */ 1099 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1100 err(EXIT_FAILURE, "route-sysctl-estimate"); 1101 if (needed) { 1102 if ((buf = malloc(needed)) == NULL) 1103 err(EXIT_FAILURE, "malloc"); 1104 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 1105 err(EXIT_FAILURE, 1106 "actual retrieval of interface table"); 1107 } 1108 lim = buf + needed; 1109 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1110 rtm = (struct rt_msghdr *)next; 1111 print_rtmsg(rtm, rtm->rtm_msglen); 1112 } 1113 free(buf); 1114 } 1115 } 1116 1117 static void 1118 monitor(int argc, char * const *argv) 1119 { 1120 int i, n; 1121 union { 1122 char msg[2048]; 1123 struct rt_msghdr hdr; 1124 } u; 1125 int count = 0; 1126 1127 /* usage: route monitor [-c <count>] */ 1128 1129 /* eat "monitor" */ 1130 argc -= 1; 1131 argv += 1; 1132 1133 /* parse [-c <count>] */ 1134 if (argc > 0) { 1135 if (argc != 2) 1136 usage(argv[0]); 1137 if (strcmp(argv[0], "-c") != 0) 1138 usage(argv[0]); 1139 1140 count = atoi(argv[1]); 1141 } 1142 1143 verbose = 1; 1144 if (debugonly) { 1145 interfaces(); 1146 exit(0); 1147 } 1148 for(i = 0; count == 0 || i < count; i++) { 1149 time_t now; 1150 n = prog_read(sock, &u, sizeof(u)); 1151 if (n == -1) { 1152 warn("read"); 1153 continue; 1154 } 1155 now = time(NULL); 1156 (void)printf("got message of size %d on %s", n, ctime(&now)); 1157 print_rtmsg(&u.hdr, n); 1158 } 1159 } 1160 1161 #endif /* SMALL */ 1162 1163 1164 struct { 1165 struct rt_msghdr m_rtm; 1166 char m_space[512]; 1167 } m_rtmsg; 1168 1169 static int 1170 rtmsg(int cmd, int flags, struct sou *soup) 1171 { 1172 static int seq; 1173 int rlen; 1174 char *cp = m_rtmsg.m_space; 1175 int l; 1176 1177 #define NEXTADDR(w, u) \ 1178 if (rtm_addrs & (w)) {\ 1179 l = RT_ROUNDUP(u->sa.sa_len); memmove(cp, u, l); cp += l;\ 1180 if (verbose && ! shortoutput) sodump(u,#u);\ 1181 } 1182 1183 errno = 0; 1184 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1185 if (cmd == 'a') 1186 cmd = RTM_ADD; 1187 else if (cmd == 'c') 1188 cmd = RTM_CHANGE; 1189 else if (cmd == 'g') { 1190 #ifdef SMALL 1191 return -1; 1192 #else /* SMALL */ 1193 cmd = RTM_GET; 1194 if (soup->so_ifp->sa.sa_family == AF_UNSPEC) { 1195 soup->so_ifp->sa.sa_family = AF_LINK; 1196 soup->so_ifp->sa.sa_len = sizeof(struct sockaddr_dl); 1197 rtm_addrs |= RTA_IFP; 1198 } 1199 #endif /* SMALL */ 1200 } else 1201 cmd = RTM_DELETE; 1202 #define rtm m_rtmsg.m_rtm 1203 rtm.rtm_type = cmd; 1204 rtm.rtm_flags = flags; 1205 rtm.rtm_version = RTM_VERSION; 1206 rtm.rtm_seq = ++seq; 1207 rtm.rtm_addrs = rtm_addrs; 1208 rtm.rtm_rmx = rt_metrics; 1209 rtm.rtm_inits = rtm_inits; 1210 1211 if (rtm_addrs & RTA_NETMASK) 1212 mask_addr(soup); 1213 NEXTADDR(RTA_DST, soup->so_dst); 1214 NEXTADDR(RTA_GATEWAY, soup->so_gate); 1215 NEXTADDR(RTA_NETMASK, soup->so_mask); 1216 NEXTADDR(RTA_GENMASK, soup->so_genmask); 1217 NEXTADDR(RTA_IFP, soup->so_ifp); 1218 NEXTADDR(RTA_IFA, soup->so_ifa); 1219 #ifndef SMALL 1220 NEXTADDR(RTA_TAG, soup->so_mpls); 1221 #endif 1222 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1223 if (verbose && ! shortoutput) { 1224 if (rtm_addrs) 1225 putchar('\n'); 1226 print_rtmsg(&rtm, l); 1227 } 1228 if (debugonly) 1229 return 0; 1230 do { 1231 rlen = prog_write(sock, (char *)&m_rtmsg, l); 1232 } while (rlen == -1 && errno == ENOBUFS); 1233 if (rlen == -1) { 1234 warnx("writing to routing socket: %s", route_strerror(errno)); 1235 return -1; 1236 } 1237 if (rlen < l) { 1238 warnx("write to routing socket, got %d for rlen", rlen); 1239 return 1; 1240 } 1241 #ifndef SMALL 1242 if (cmd == RTM_GET) { 1243 do { 1244 l = prog_read(sock, 1245 (char *)&m_rtmsg, sizeof(m_rtmsg)); 1246 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1247 if (l < 0) 1248 err(EXIT_FAILURE, "read from routing socket"); 1249 else 1250 return print_getmsg(&rtm, l, soup); 1251 } 1252 #endif /* SMALL */ 1253 #undef rtm 1254 return 0; 1255 } 1256 1257 static void 1258 mask_addr(struct sou *soup) 1259 { 1260 int olen = soup->so_mask->sa.sa_len; 1261 char *cp1 = olen + (char *)soup->so_mask, *cp2; 1262 1263 for (soup->so_mask->sa.sa_len = 0; cp1 > (char *)soup->so_mask; ) 1264 if (*--cp1 != 0) { 1265 soup->so_mask->sa.sa_len = 1 + cp1 - (char *)soup->so_mask; 1266 break; 1267 } 1268 if ((rtm_addrs & RTA_DST) == 0) 1269 return; 1270 switch (soup->so_dst->sa.sa_family) { 1271 case AF_INET: 1272 #ifdef INET6 1273 case AF_INET6: 1274 #endif 1275 #ifndef SMALL 1276 case AF_APPLETALK: 1277 #endif /* SMALL */ 1278 case 0: 1279 return; 1280 } 1281 cp1 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_dst; 1282 cp2 = soup->so_dst->sa.sa_len + 1 + (char *)soup->so_dst; 1283 while (cp2 > cp1) 1284 *--cp2 = 0; 1285 cp2 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_mask; 1286 while (cp1 > soup->so_dst->sa.sa_data) 1287 *--cp1 &= *--cp2; 1288 } 1289 1290 const char * const msgtypes[] = { 1291 [RTM_ADD] = "RTM_ADD: Add Route", 1292 [RTM_DELETE] = "RTM_DELETE: Delete Route", 1293 [RTM_CHANGE] = "RTM_CHANGE: Change Metrics, Flags or Gateway", 1294 [RTM_GET] = "RTM_GET: Report Metrics", 1295 [RTM_LOSING] = "RTM_LOSING: Kernel Suspects Partitioning", 1296 [RTM_REDIRECT] = "RTM_REDIRECT: Told to use different route", 1297 [RTM_MISS] = "RTM_MISS: Lookup failed on this address", 1298 [RTM_LOCK] = "RTM_LOCK: fix specified metrics", 1299 [RTM_OLDADD] = "RTM_OLDADD: caused by SIOCADDRT", 1300 [RTM_OLDDEL] = "RTM_OLDDEL: caused by SIOCDELRT", 1301 [RTM_NEWADDR] = "RTM_NEWADDR: address being added to iface", 1302 [RTM_DELADDR] = "RTM_DELADDR: address being removed from iface", 1303 [RTM_OOIFINFO] = "RTM_OOIFINFO: iface status change (pre-1.5)", 1304 [RTM_OIFINFO] = "RTM_OIFINFO: iface status change (pre-64bit time)", 1305 [RTM_IFANNOUNCE] = "RTM_IFANNOUNCE: iface arrival/departure", 1306 [RTM_IEEE80211] = "RTM_IEEE80211: IEEE80211 wireless event", 1307 [RTM_IFINFO] = "RTM_IFINFO: iface status change", 1308 [RTM_CHGADDR] = "RTM_CHGADDR: address being changed on iface", 1309 }; 1310 1311 const char unknownflags[] = "\020"; 1312 const char metricnames[] = RTVBITS; 1313 const char routeflags[] = RTFBITS; 1314 const char ifnetflags[] = IFFBITS; 1315 const char in_ifflags[] = IN_IFFBITS; 1316 const char in6_ifflags[] = IN6_IFFBITS; 1317 const char addrnames[] = RTABITS; 1318 1319 1320 #ifndef SMALL 1321 static const char * 1322 linkstate(struct if_msghdr *ifm) 1323 { 1324 static char buf[64]; 1325 1326 switch (ifm->ifm_data.ifi_link_state) { 1327 case LINK_STATE_UNKNOWN: 1328 return "carrier: unknown"; 1329 case LINK_STATE_DOWN: 1330 return "carrier: no carrier"; 1331 case LINK_STATE_UP: 1332 return "carrier: active"; 1333 default: 1334 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1335 ifm->ifm_data.ifi_link_state); 1336 return buf; 1337 } 1338 } 1339 #endif /* SMALL */ 1340 1341 static void 1342 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1343 { 1344 struct if_msghdr *ifm; 1345 struct ifa_msghdr *ifam; 1346 struct if_announcemsghdr *ifan; 1347 union { 1348 struct ieee80211_join_event join; 1349 struct ieee80211_leave_event leave; 1350 struct ieee80211_replay_event replay; 1351 struct ieee80211_michael_event michael; 1352 } ev; 1353 size_t evlen = 0; 1354 1355 if (verbose == 0) 1356 return; 1357 if (rtm->rtm_version != RTM_VERSION) { 1358 (void)printf("routing message version %d not understood\n", 1359 rtm->rtm_version); 1360 return; 1361 } 1362 if (msgtypes[rtm->rtm_type]) 1363 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1364 else 1365 (void)printf("#%d: ", rtm->rtm_type); 1366 (void)printf("len %d, ", rtm->rtm_msglen); 1367 switch (rtm->rtm_type) { 1368 case RTM_IFINFO: 1369 ifm = (struct if_msghdr *)rtm; 1370 (void)printf("if# %d, %s, flags: ", ifm->ifm_index, 1371 #ifdef SMALL 1372 "" 1373 #else 1374 linkstate(ifm) 1375 #endif /* SMALL */ 1376 ); 1377 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1378 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1379 break; 1380 case RTM_NEWADDR: 1381 case RTM_DELADDR: 1382 case RTM_CHGADDR: 1383 ifam = (struct ifa_msghdr *)rtm; 1384 (void)printf("pid %d, metric %d, addrflags: ", 1385 ifam->ifam_pid, ifam->ifam_metric); 1386 struct sockaddr *sa = (struct sockaddr *)(ifam + 1); 1387 const char *bits; 1388 switch (sa->sa_family) { 1389 case AF_INET: 1390 bits = in_ifflags; 1391 break; 1392 case AF_INET6: 1393 bits = in6_ifflags; 1394 break; 1395 default: 1396 bits = unknownflags; 1397 break; 1398 } 1399 bprintf(stdout, ifam->ifam_addrflags, bits); 1400 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1401 break; 1402 case RTM_IEEE80211: 1403 ifan = (struct if_announcemsghdr *)rtm; 1404 (void)printf("if# %d, what: ", ifan->ifan_index); 1405 switch (ifan->ifan_what) { 1406 case RTM_IEEE80211_ASSOC: 1407 printf("associate"); 1408 break; 1409 case RTM_IEEE80211_REASSOC: 1410 printf("re-associate"); 1411 break; 1412 case RTM_IEEE80211_DISASSOC: 1413 printf("disassociate"); 1414 break; 1415 case RTM_IEEE80211_SCAN: 1416 printf("scan complete"); 1417 break; 1418 case RTM_IEEE80211_JOIN: 1419 evlen = sizeof(ev.join); 1420 printf("join"); 1421 break; 1422 case RTM_IEEE80211_LEAVE: 1423 evlen = sizeof(ev.leave); 1424 printf("leave"); 1425 break; 1426 case RTM_IEEE80211_MICHAEL: 1427 evlen = sizeof(ev.michael); 1428 printf("michael"); 1429 break; 1430 case RTM_IEEE80211_REPLAY: 1431 evlen = sizeof(ev.replay); 1432 printf("replay"); 1433 break; 1434 default: 1435 evlen = 0; 1436 printf("#%d", ifan->ifan_what); 1437 break; 1438 } 1439 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1440 printf(" (truncated)\n"); 1441 break; 1442 } 1443 (void)memcpy(&ev, (ifan + 1), evlen); 1444 switch (ifan->ifan_what) { 1445 case RTM_IEEE80211_JOIN: 1446 case RTM_IEEE80211_LEAVE: 1447 printf(" mac %" PRIETHER, 1448 PRIETHER_ARGS(ev.join.iev_addr)); 1449 break; 1450 case RTM_IEEE80211_REPLAY: 1451 case RTM_IEEE80211_MICHAEL: 1452 printf(" src %" PRIETHER " dst %" PRIETHER 1453 " cipher %" PRIu8 " keyix %" PRIu8, 1454 PRIETHER_ARGS(ev.replay.iev_src), 1455 PRIETHER_ARGS(ev.replay.iev_dst), 1456 ev.replay.iev_cipher, 1457 ev.replay.iev_keyix); 1458 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1459 printf(" key rsc %#" PRIx64 1460 " frame rsc %#" PRIx64, 1461 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1462 } 1463 break; 1464 default: 1465 break; 1466 } 1467 printf("\n"); 1468 break; 1469 case RTM_IFANNOUNCE: 1470 ifan = (struct if_announcemsghdr *)rtm; 1471 (void)printf("if# %d, what: ", ifan->ifan_index); 1472 switch (ifan->ifan_what) { 1473 case IFAN_ARRIVAL: 1474 printf("arrival"); 1475 break; 1476 case IFAN_DEPARTURE: 1477 printf("departure"); 1478 break; 1479 default: 1480 printf("#%d", ifan->ifan_what); 1481 break; 1482 } 1483 printf("\n"); 1484 break; 1485 case RTM_ADD: /* FALLTHROUGH */ 1486 case RTM_CHANGE: /* FALLTHROUGH */ 1487 case RTM_DELETE: /* FALLTHROUGH */ 1488 case RTM_GET: /* FALLTHROUGH */ 1489 case RTM_LOSING: /* FALLTHROUGH */ 1490 case RTM_MISS: 1491 (void)printf("pid %d, seq %d, errno %d, flags: ", 1492 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1493 bprintf(stdout, rtm->rtm_flags, routeflags); 1494 pmsg_common(rtm); 1495 break; 1496 } 1497 } 1498 1499 #ifndef SMALL 1500 static int 1501 print_getmsg(struct rt_msghdr *rtm, int msglen, struct sou *soup) 1502 { 1503 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL, *mpls = NULL; 1504 struct sockaddr_dl *ifp = NULL; 1505 struct sockaddr *sa; 1506 char *cp; 1507 unsigned int i; 1508 1509 if (! shortoutput) { 1510 (void)printf(" route to: %s\n", 1511 routename(&soup->so_dst->sa, nflag)); 1512 } 1513 if (rtm->rtm_version != RTM_VERSION) { 1514 warnx("routing message version %d not understood", 1515 rtm->rtm_version); 1516 return 1; 1517 } 1518 if (rtm->rtm_msglen > msglen) { 1519 warnx("message length mismatch, in packet %d, returned %d", 1520 rtm->rtm_msglen, msglen); 1521 } 1522 if (rtm->rtm_errno) { 1523 warnx("RTM_GET: %s (errno %d)", 1524 strerror(rtm->rtm_errno), rtm->rtm_errno); 1525 return 1; 1526 } 1527 cp = ((char *)(rtm + 1)); 1528 if (rtm->rtm_addrs) 1529 for (i = 1; i; i <<= 1) 1530 if (i & rtm->rtm_addrs) { 1531 sa = (struct sockaddr *)cp; 1532 switch (i) { 1533 case RTA_DST: 1534 dst = sa; 1535 break; 1536 case RTA_GATEWAY: 1537 gate = sa; 1538 break; 1539 case RTA_NETMASK: 1540 mask = sa; 1541 break; 1542 case RTA_IFP: 1543 if (sa->sa_family == AF_LINK && 1544 ((struct sockaddr_dl *)sa)->sdl_nlen) 1545 ifp = (struct sockaddr_dl *)sa; 1546 break; 1547 case RTA_IFA: 1548 ifa = sa; 1549 break; 1550 case RTA_TAG: 1551 mpls = sa; 1552 break; 1553 } 1554 RT_ADVANCE(cp, sa); 1555 } 1556 if (dst && mask) 1557 mask->sa_family = dst->sa_family; /* XXX */ 1558 if (dst && ! shortoutput) 1559 (void)printf("destination: %s\n", 1560 routename(dst, nflag)); 1561 if (mask && ! shortoutput) { 1562 int savenflag = nflag; 1563 1564 nflag = RT_NFLAG; 1565 (void)printf(" mask: %s\n", 1566 routename(mask, nflag)); 1567 nflag = savenflag; 1568 } 1569 if (gate && rtm->rtm_flags & RTF_GATEWAY) { 1570 const char *name; 1571 1572 name = routename(gate, nflag); 1573 if (shortoutput) { 1574 if (*name == '\0') 1575 return 1; 1576 (void)printf("%s\n", name); 1577 } else 1578 (void)printf(" gateway: %s\n", name); 1579 } 1580 if (mpls) { 1581 const char *name; 1582 name = routename(mpls, nflag); 1583 if(shortoutput) { 1584 if (*name == '\0') 1585 return 1; 1586 printf("%s\n", name); 1587 } else 1588 printf(" Tag: %s\n", name); 1589 } 1590 1591 if (ifa && ! shortoutput) 1592 (void)printf(" local addr: %s\n", 1593 routename(ifa, nflag)); 1594 if (ifp && ! shortoutput) 1595 (void)printf(" interface: %.*s\n", 1596 ifp->sdl_nlen, ifp->sdl_data); 1597 if (! shortoutput) { 1598 (void)printf(" flags: "); 1599 bprintf(stdout, rtm->rtm_flags, routeflags); 1600 } 1601 1602 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1603 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1604 1605 if (! shortoutput) { 1606 (void)printf("\n%s\n", "\ 1607 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1608 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1609 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1610 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1611 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1612 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1613 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1614 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1615 if (rtm->rtm_rmx.rmx_expire) 1616 rtm->rtm_rmx.rmx_expire -= time(0); 1617 printf("%8"PRId64"%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1618 } 1619 #undef lock 1620 #undef msec 1621 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1622 1623 if (shortoutput) 1624 return (rtm->rtm_addrs & RTF_GATEWAY) == 0; 1625 else if (verbose) 1626 pmsg_common(rtm); 1627 else if (rtm->rtm_addrs &~ RTA_IGN) { 1628 (void)printf("sockaddrs: "); 1629 bprintf(stdout, rtm->rtm_addrs, addrnames); 1630 putchar('\n'); 1631 } 1632 return 0; 1633 #undef RTA_IGN 1634 } 1635 #endif /* SMALL */ 1636 1637 void 1638 pmsg_common(struct rt_msghdr *rtm) 1639 { 1640 (void)printf("\nlocks: "); 1641 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1642 (void)printf(" inits: "); 1643 bprintf(stdout, rtm->rtm_inits, metricnames); 1644 pmsg_addrs((char *)(rtm + 1), rtm->rtm_addrs); 1645 } 1646 1647 static void 1648 extract_addrs(const char *cp, int addrs, const struct sockaddr *sa[], int *nmfp) 1649 { 1650 int i, nmf = -1; 1651 1652 for (i = 0; i < RTAX_MAX; i++) { 1653 if ((1 << i) & addrs) { 1654 sa[i] = (const struct sockaddr *)cp; 1655 if ((i == RTAX_DST || i == RTAX_IFA) && 1656 nmf == -1) 1657 nmf = sa[i]->sa_family; 1658 RT_ADVANCE(cp, sa[i]); 1659 } else 1660 sa[i] = NULL; 1661 } 1662 1663 if (nmfp != NULL) 1664 *nmfp = nmf; 1665 } 1666 1667 static void 1668 pmsg_addrs(const char *cp, int addrs) 1669 { 1670 const struct sockaddr *sa[RTAX_MAX]; 1671 int i, nmf; 1672 1673 if (addrs != 0) { 1674 (void)printf("\nsockaddrs: "); 1675 bprintf(stdout, addrs, addrnames); 1676 (void)putchar('\n'); 1677 extract_addrs(cp, addrs, sa, &nmf); 1678 for (i = 0; i < RTAX_MAX; i++) { 1679 if (sa[i] == NULL) 1680 continue; 1681 1682 if (i == RTAX_NETMASK && sa[i]->sa_len) 1683 (void)printf(" %s", 1684 netmask_string(sa[i], -1, nmf)); 1685 else 1686 (void)printf(" %s", 1687 routename(sa[i], nflag)); 1688 } 1689 } 1690 (void)putchar('\n'); 1691 (void)fflush(stdout); 1692 } 1693 1694 static void 1695 bprintf(FILE *fp, int b, const char *f) 1696 { 1697 char buf[1024]; 1698 1699 snprintb(buf, sizeof(buf), f, b); 1700 fputs(buf, fp); 1701 } 1702 1703 int 1704 keyword(const char *cp) 1705 { 1706 struct keytab *kt = keywords; 1707 1708 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1709 kt++; 1710 return kt->kt_i; 1711 } 1712 1713 static void 1714 sodump(sup su, const char *which) 1715 { 1716 #ifdef INET6 1717 char ntop_buf[NI_MAXHOST]; 1718 #endif 1719 1720 switch (su->sa.sa_family) { 1721 case AF_INET: 1722 (void)printf("%s: inet %s; ", 1723 which, inet_ntoa(su->sin.sin_addr)); 1724 break; 1725 #ifndef SMALL 1726 case AF_APPLETALK: 1727 (void)printf("%s: atalk %d.%d; ", 1728 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1729 break; 1730 #endif 1731 case AF_LINK: 1732 (void)printf("%s: link %s; ", 1733 which, link_ntoa(&su->sdl)); 1734 break; 1735 #ifdef INET6 1736 case AF_INET6: 1737 (void)printf("%s: inet6 %s; ", 1738 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 1739 ntop_buf, sizeof(ntop_buf))); 1740 break; 1741 #endif 1742 #ifndef SMALL 1743 case AF_MPLS: 1744 { 1745 union mpls_shim ms; 1746 const union mpls_shim *pms; 1747 int psize = sizeof(struct sockaddr_mpls); 1748 1749 ms.s_addr = ntohl(su->smpls.smpls_addr.s_addr); 1750 printf("%s: mpls %u; ", 1751 which, ms.shim.label); 1752 1753 pms = &su->smpls.smpls_addr; 1754 while(psize < su->smpls.smpls_len) { 1755 pms++; 1756 ms.s_addr = ntohl(pms->s_addr); 1757 printf("%u; ", ms.shim.label); 1758 psize += sizeof(ms); 1759 } 1760 break; 1761 } 1762 #endif /* SMALL */ 1763 default: 1764 (void)printf("%s: (%d) %s; ", 1765 which, su->sa.sa_family, any_ntoa(&su->sa)); 1766 } 1767 (void)fflush(stdout); 1768 } 1769 1770 /* States*/ 1771 #define VIRGIN 0 1772 #define GOTONE 1 1773 #define GOTTWO 2 1774 /* Inputs */ 1775 #define DIGIT (4*0) 1776 #define END (4*1) 1777 #define DELIM (4*2) 1778 1779 static void 1780 sockaddr(const char *addr, struct sockaddr *sa) 1781 { 1782 char *cp = (char *)sa; 1783 int size = sa->sa_len; 1784 char *cplim = cp + size; 1785 int byte = 0, state = VIRGIN, new = 0; 1786 1787 (void)memset(cp, 0, size); 1788 cp++; 1789 do { 1790 if ((*addr >= '0') && (*addr <= '9')) { 1791 new = *addr - '0'; 1792 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1793 new = *addr - 'a' + 10; 1794 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1795 new = *addr - 'A' + 10; 1796 } else if (*addr == 0) 1797 state |= END; 1798 else 1799 state |= DELIM; 1800 addr++; 1801 switch (state /* | INPUT */) { 1802 case GOTTWO | DIGIT: 1803 *cp++ = byte; /*FALLTHROUGH*/ 1804 case VIRGIN | DIGIT: 1805 state = GOTONE; byte = new; continue; 1806 case GOTONE | DIGIT: 1807 state = GOTTWO; byte = new + (byte << 4); continue; 1808 default: /* | DELIM */ 1809 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1810 case GOTONE | END: 1811 case GOTTWO | END: 1812 *cp++ = byte; /* FALLTHROUGH */ 1813 case VIRGIN | END: 1814 break; 1815 } 1816 break; 1817 } while (cp < cplim); 1818 sa->sa_len = cp - (char *)sa; 1819 } 1820
Indexes created Mon Sep 22 13:09:51 GMT 2025