route.c revision 1.146
1 /* $NetBSD: route.c,v 1.146 2014/11/07 14:57:08 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 1.146 2014/11/07 14:57:08 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, Tflag; 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 static const char opts[] = "dfnqSsTtv"; 138 139 void 140 usage(const char *cp) 141 { 142 143 if (cp) 144 warnx("botched keyword: %s", cp); 145 (void)fprintf(stderr, 146 "Usage: %s [-%s] cmd [[-<qualifers>] args]\n", getprogname(), opts); 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, opts)) != -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 = RT_TFLAG; 185 break; 186 case 't': 187 tflag = 1; 188 break; 189 case 'v': 190 verbose = RT_VFLAG; 191 break; 192 case '?': 193 default: 194 usage(NULL); 195 /*NOTREACHED*/ 196 } 197 argc -= optind; 198 argv += optind; 199 200 if (prog_init && prog_init() == -1) 201 err(1, "init failed"); 202 203 pid = prog_getpid(); 204 if (tflag) 205 sock = prog_open("/dev/null", O_WRONLY, 0); 206 else 207 sock = prog_socket(PF_ROUTE, SOCK_RAW, 0); 208 if (sock < 0) 209 err(EXIT_FAILURE, "socket"); 210 211 if (*argv == NULL) { 212 if (doflush) 213 ch = K_FLUSH; 214 else 215 goto no_cmd; 216 } else 217 ch = keyword(*argv); 218 219 switch (ch) { 220 #ifndef SMALL 221 case K_GET: 222 #endif /* SMALL */ 223 case K_CHANGE: 224 case K_ADD: 225 case K_DELETE: 226 if (doflush) 227 (void)flushroutes(1, argv, 0); 228 return newroute(argc, argv); 229 230 case K_SHOW: 231 show(argc, argv, nflag|Tflag|verbose); 232 return 0; 233 234 #ifndef SMALL 235 case K_MONITOR: 236 monitor(); 237 return 0; 238 239 #endif /* SMALL */ 240 case K_FLUSH: 241 return flushroutes(argc, argv, 0); 242 243 case K_FLUSHALL: 244 return flushroutes(argc, argv, 1); 245 no_cmd: 246 default: 247 usage(*argv); 248 /*NOTREACHED*/ 249 } 250 } 251 252 static char * 253 netmask_string(const struct sockaddr *mask, int len, int family) 254 { 255 static char smask[INET6_ADDRSTRLEN]; 256 struct sockaddr_in nsin; 257 struct sockaddr_in6 nsin6; 258 259 if (len >= 0) 260 snprintf(smask, sizeof(smask), "%d", len); 261 else { 262 switch (family) { 263 case AF_INET: 264 memset(&nsin, 0, sizeof(nsin)); 265 memcpy(&nsin, mask, mask->sa_len); 266 snprintf(smask, sizeof(smask), "%s", 267 inet_ntoa(nsin.sin_addr)); 268 break; 269 case AF_INET6: 270 memset(&nsin6, 0, sizeof(nsin6)); 271 memcpy(&nsin6, mask, mask->sa_len); 272 inet_ntop(family, &nsin6.sin6_addr, smask, 273 sizeof(smask)); 274 break; 275 default: 276 snprintf(smask, sizeof(smask), "%s", any_ntoa(mask)); 277 } 278 } 279 280 return smask; 281 } 282 /* 283 * Purge all entries in the routing tables not 284 * associated with network interfaces. 285 */ 286 static int 287 flushroutes(int argc, char * const argv[], int doall) 288 { 289 struct sockaddr *sa; 290 size_t needed; 291 int flags, mib[6], rlen, seqno; 292 char *buf, *next, *lim; 293 const char *afname; 294 struct rt_msghdr *rtm; 295 296 flags = 0; 297 af = AF_UNSPEC; 298 /* Don't want to read back our messages */ 299 prog_shutdown(sock, SHUT_RD); 300 parse_show_opts(argc, argv, &af, &flags, &afname, false); 301 mib[0] = CTL_NET; 302 mib[1] = PF_ROUTE; 303 mib[2] = 0; /* protocol */ 304 mib[3] = 0; /* wildcard address family */ 305 mib[4] = NET_RT_DUMP; 306 mib[5] = 0; /* no flags */ 307 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 308 err(EXIT_FAILURE, "route-sysctl-estimate"); 309 buf = lim = NULL; 310 if (needed) { 311 if ((buf = malloc(needed)) == NULL) 312 err(EXIT_FAILURE, "malloc"); 313 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 314 err(EXIT_FAILURE, "actual retrieval of routing table"); 315 lim = buf + needed; 316 } 317 if (verbose) { 318 (void)printf("Examining routing table from sysctl\n"); 319 if (af != AF_UNSPEC) 320 printf("(address family %s)\n", afname); 321 } 322 if (needed == 0) 323 return 0; 324 seqno = 0; /* ??? */ 325 for (next = buf; next < lim; next += rtm->rtm_msglen) { 326 rtm = (struct rt_msghdr *)next; 327 sa = (struct sockaddr *)(rtm + 1); 328 if (verbose) 329 print_rtmsg(rtm, rtm->rtm_msglen); 330 if ((rtm->rtm_flags & flags) != flags) 331 continue; 332 if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC | 333 RTF_LLINFO)) && !doall) 334 continue; 335 if (af != AF_UNSPEC && sa->sa_family != af) 336 continue; 337 if (debugonly) 338 continue; 339 rtm->rtm_type = RTM_DELETE; 340 rtm->rtm_seq = seqno; 341 if ((rlen = prog_write(sock, next, 342 rtm->rtm_msglen)) < 0) { 343 warnx("writing to routing socket: %s", 344 route_strerror(errno)); 345 return 1; 346 } 347 if (rlen < (int)rtm->rtm_msglen) { 348 warnx("write to routing socket, got %d for rlen", rlen); 349 return 1; 350 } 351 seqno++; 352 if (qflag) 353 continue; 354 if (verbose) 355 print_rtmsg(rtm, rlen); 356 else { 357 (void)printf("%-20.20s ", netname(sa, NULL, nflag)); 358 sa = (struct sockaddr *)(RT_ROUNDUP(sa->sa_len) + 359 (char *)sa); 360 (void)printf("%-20.20s ", routename(sa, nflag)); 361 (void)printf("done\n"); 362 } 363 } 364 free(buf); 365 return 0; 366 } 367 368 static const char * 369 route_strerror(int error) 370 { 371 372 switch (error) { 373 case ESRCH: 374 return "not in table"; 375 case EBUSY: 376 return "entry in use"; 377 case ENOBUFS: 378 return "routing table overflow"; 379 default: 380 return strerror(error); 381 } 382 } 383 384 static void 385 set_metric(const char *value, int key) 386 { 387 int flag = 0; 388 uint64_t noval, *valp = &noval; 389 390 switch (key) { 391 #define caseof(x, y, z) \ 392 case x: valp = (uint64_t *)&rt_metrics.z; flag = y; break 393 caseof(K_MTU, RTV_MTU, rmx_mtu); 394 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 395 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 396 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 397 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 398 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 399 caseof(K_RTT, RTV_RTT, rmx_rtt); 400 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 401 } 402 rtm_inits |= flag; 403 if (lockrest || locking) 404 rt_metrics.rmx_locks |= flag; 405 if (locking) 406 locking = 0; 407 *valp = strtoul(value, NULL, 0); 408 } 409 410 static int 411 newroute(int argc, char *const *argv) 412 { 413 const char *cmd, *dest = "", *gateway = ""; 414 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 415 int key; 416 struct hostent *hp = 0; 417 struct sou sou, *soup = &sou; 418 419 sou.so_dst = calloc(1, sizeof(union sockunion)); 420 sou.so_gate = calloc(1, sizeof(union sockunion)); 421 sou.so_mask = calloc(1, sizeof(union sockunion)); 422 sou.so_genmask = calloc(1, sizeof(union sockunion)); 423 sou.so_ifa = calloc(1, sizeof(union sockunion)); 424 sou.so_ifp = calloc(1, sizeof(union sockunion)); 425 sou.so_mpls = calloc(1, sizeof(union sockunion)); 426 427 if (sou.so_dst == NULL || sou.so_gate == NULL || sou.so_mask == NULL || 428 sou.so_genmask == NULL || sou.so_ifa == NULL || sou.so_ifp == NULL || 429 sou.so_mpls == NULL) 430 errx(EXIT_FAILURE, "Cannot allocate memory"); 431 432 cmd = argv[0]; 433 af = AF_UNSPEC; 434 if (*cmd != 'g') { 435 /* Don't want to read back our messages */ 436 prog_shutdown(sock, SHUT_RD); 437 } 438 while (--argc > 0) { 439 if (**(++argv)== '-') { 440 switch (key = keyword(1 + *argv)) { 441 442 case K_SA: 443 af = PF_ROUTE; 444 aflen = sizeof(union sockunion); 445 break; 446 447 #ifndef SMALL 448 case K_ATALK: 449 af = AF_APPLETALK; 450 aflen = sizeof(struct sockaddr_at); 451 break; 452 #endif 453 454 case K_INET: 455 af = AF_INET; 456 aflen = sizeof(struct sockaddr_in); 457 break; 458 459 #ifdef INET6 460 case K_INET6: 461 af = AF_INET6; 462 aflen = sizeof(struct sockaddr_in6); 463 break; 464 #endif 465 466 case K_LINK: 467 af = AF_LINK; 468 aflen = sizeof(struct sockaddr_dl); 469 break; 470 471 #ifndef SMALL 472 case K_MPLS: 473 af = AF_MPLS; 474 aflen = sizeof(struct sockaddr_mpls); 475 break; 476 case K_TAG: 477 if (!--argc) 478 usage(1+*argv); 479 af = AF_MPLS; 480 aflen = sizeof(struct sockaddr_mpls); 481 (void)getaddr(RTA_TAG, *++argv, 0, soup); 482 break; 483 #endif /* SMALL */ 484 485 case K_IFACE: 486 case K_INTERFACE: 487 iflag++; 488 break; 489 case K_NOSTATIC: 490 flags &= ~RTF_STATIC; 491 break; 492 case K_LLINFO: 493 flags |= RTF_LLINFO; 494 break; 495 case K_LOCK: 496 locking = 1; 497 break; 498 case K_LOCKREST: 499 lockrest = 1; 500 break; 501 case K_HOST: 502 forcehost++; 503 break; 504 case K_REJECT: 505 flags |= RTF_REJECT; 506 break; 507 case K_NOREJECT: 508 flags &= ~RTF_REJECT; 509 break; 510 case K_BLACKHOLE: 511 flags |= RTF_BLACKHOLE; 512 break; 513 case K_NOBLACKHOLE: 514 flags &= ~RTF_BLACKHOLE; 515 break; 516 case K_CLONED: 517 flags |= RTF_CLONED; 518 break; 519 case K_NOCLONED: 520 flags &= ~RTF_CLONED; 521 break; 522 case K_PROTO1: 523 flags |= RTF_PROTO1; 524 break; 525 case K_PROTO2: 526 flags |= RTF_PROTO2; 527 break; 528 case K_PROXY: 529 flags |= RTF_ANNOUNCE; 530 break; 531 case K_CLONING: 532 flags |= RTF_CLONING; 533 break; 534 case K_NOCLONING: 535 flags &= ~RTF_CLONING; 536 break; 537 case K_XRESOLVE: 538 flags |= RTF_XRESOLVE; 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') 660 return ret != 0; 661 if (!qflag) { 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 } 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 len = atoi(s), q, r; 1033 int max; 1034 1035 switch (af) { 1036 case AF_INET: 1037 max = sizeof(struct in_addr) * 8; 1038 break; 1039 #ifdef INET6 1040 case AF_INET6: 1041 max = sizeof(struct in6_addr) * 8; 1042 break; 1043 #endif 1044 default: 1045 errx(EXIT_FAILURE, "prefixlen is not supported with af %d", af); 1046 /*NOTREACHED*/ 1047 } 1048 1049 rtm_addrs |= RTA_NETMASK; 1050 if (len < -1 || len > max) 1051 errx(EXIT_FAILURE, "%s: bad value", s); 1052 1053 q = len >> 3; 1054 r = len & 7; 1055 switch (af) { 1056 case AF_INET: 1057 memset(soup->so_mask, 0, sizeof(*soup->so_mask)); 1058 soup->so_mask->sin.sin_family = AF_INET; 1059 soup->so_mask->sin.sin_len = sizeof(struct sockaddr_in); 1060 soup->so_mask->sin.sin_addr.s_addr = (len == 0 ? 0 1061 : htonl(0xffffffff << (32 - len))); 1062 break; 1063 #ifdef INET6 1064 case AF_INET6: 1065 soup->so_mask->sin6.sin6_family = AF_INET6; 1066 soup->so_mask->sin6.sin6_len = sizeof(struct sockaddr_in6); 1067 memset(&soup->so_mask->sin6.sin6_addr, 0, 1068 sizeof(soup->so_mask->sin6.sin6_addr)); 1069 if (q > 0) 1070 memset(&soup->so_mask->sin6.sin6_addr, 0xff, q); 1071 if (r > 0) 1072 *((u_char *)&soup->so_mask->sin6.sin6_addr + q) = 1073 (0xff00 >> r) & 0xff; 1074 break; 1075 #endif 1076 } 1077 return len == max; 1078 } 1079 1080 #ifndef SMALL 1081 static void 1082 interfaces(void) 1083 { 1084 size_t needed; 1085 int mib[6]; 1086 char *buf, *lim, *next; 1087 struct rt_msghdr *rtm; 1088 1089 mib[0] = CTL_NET; 1090 mib[1] = PF_ROUTE; 1091 mib[2] = 0; /* protocol */ 1092 mib[3] = 0; /* wildcard address family */ 1093 mib[4] = NET_RT_IFLIST; 1094 mib[5] = 0; /* no flags */ 1095 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1096 err(EXIT_FAILURE, "route-sysctl-estimate"); 1097 if (needed) { 1098 if ((buf = malloc(needed)) == NULL) 1099 err(EXIT_FAILURE, "malloc"); 1100 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 1101 err(EXIT_FAILURE, 1102 "actual retrieval of interface table"); 1103 } 1104 lim = buf + needed; 1105 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1106 rtm = (struct rt_msghdr *)next; 1107 print_rtmsg(rtm, rtm->rtm_msglen); 1108 } 1109 free(buf); 1110 } 1111 } 1112 1113 static void 1114 monitor(void) 1115 { 1116 int n; 1117 union { 1118 char msg[2048]; 1119 struct rt_msghdr hdr; 1120 } u; 1121 1122 verbose = 1; 1123 if (debugonly) { 1124 interfaces(); 1125 exit(0); 1126 } 1127 for(;;) { 1128 time_t now; 1129 n = prog_read(sock, &u, sizeof(u)); 1130 now = time(NULL); 1131 (void)printf("got message of size %d on %s", n, ctime(&now)); 1132 print_rtmsg(&u.hdr, n); 1133 } 1134 } 1135 1136 #endif /* SMALL */ 1137 1138 1139 struct { 1140 struct rt_msghdr m_rtm; 1141 char m_space[512]; 1142 } m_rtmsg; 1143 1144 static int 1145 rtmsg(int cmd, int flags, struct sou *soup) 1146 { 1147 static int seq; 1148 int rlen; 1149 char *cp = m_rtmsg.m_space; 1150 int l; 1151 1152 #define NEXTADDR(w, u) \ 1153 if (rtm_addrs & (w)) {\ 1154 l = RT_ROUNDUP(u->sa.sa_len); memmove(cp, u, l); cp += l;\ 1155 if (verbose && ! shortoutput) sodump(u,#u);\ 1156 } 1157 1158 errno = 0; 1159 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1160 if (cmd == 'a') 1161 cmd = RTM_ADD; 1162 else if (cmd == 'c') 1163 cmd = RTM_CHANGE; 1164 else if (cmd == 'g') { 1165 #ifdef SMALL 1166 return -1; 1167 #else /* SMALL */ 1168 cmd = RTM_GET; 1169 if (soup->so_ifp->sa.sa_family == AF_UNSPEC) { 1170 soup->so_ifp->sa.sa_family = AF_LINK; 1171 soup->so_ifp->sa.sa_len = sizeof(struct sockaddr_dl); 1172 rtm_addrs |= RTA_IFP; 1173 } 1174 #endif /* SMALL */ 1175 } else 1176 cmd = RTM_DELETE; 1177 #define rtm m_rtmsg.m_rtm 1178 rtm.rtm_type = cmd; 1179 rtm.rtm_flags = flags; 1180 rtm.rtm_version = RTM_VERSION; 1181 rtm.rtm_seq = ++seq; 1182 rtm.rtm_addrs = rtm_addrs; 1183 rtm.rtm_rmx = rt_metrics; 1184 rtm.rtm_inits = rtm_inits; 1185 1186 if (rtm_addrs & RTA_NETMASK) 1187 mask_addr(soup); 1188 NEXTADDR(RTA_DST, soup->so_dst); 1189 NEXTADDR(RTA_GATEWAY, soup->so_gate); 1190 NEXTADDR(RTA_NETMASK, soup->so_mask); 1191 NEXTADDR(RTA_GENMASK, soup->so_genmask); 1192 NEXTADDR(RTA_IFP, soup->so_ifp); 1193 NEXTADDR(RTA_IFA, soup->so_ifa); 1194 #ifndef SMALL 1195 NEXTADDR(RTA_TAG, soup->so_mpls); 1196 #endif 1197 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1198 if (verbose && ! shortoutput) { 1199 if (rtm_addrs) 1200 putchar('\n'); 1201 print_rtmsg(&rtm, l); 1202 } 1203 if (debugonly) 1204 return 0; 1205 if ((rlen = prog_write(sock, (char *)&m_rtmsg, l)) < 0) { 1206 warnx("writing to routing socket: %s", route_strerror(errno)); 1207 return -1; 1208 } 1209 if (rlen < l) { 1210 warnx("write to routing socket, got %d for rlen", rlen); 1211 return 1; 1212 } 1213 #ifndef SMALL 1214 if (cmd == RTM_GET) { 1215 do { 1216 l = prog_read(sock, 1217 (char *)&m_rtmsg, sizeof(m_rtmsg)); 1218 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1219 if (l < 0) 1220 err(EXIT_FAILURE, "read from routing socket"); 1221 else 1222 return print_getmsg(&rtm, l, soup); 1223 } 1224 #endif /* SMALL */ 1225 #undef rtm 1226 return 0; 1227 } 1228 1229 static void 1230 mask_addr(struct sou *soup) 1231 { 1232 int olen = soup->so_mask->sa.sa_len; 1233 char *cp1 = olen + (char *)soup->so_mask, *cp2; 1234 1235 for (soup->so_mask->sa.sa_len = 0; cp1 > (char *)soup->so_mask; ) 1236 if (*--cp1 != 0) { 1237 soup->so_mask->sa.sa_len = 1 + cp1 - (char *)soup->so_mask; 1238 break; 1239 } 1240 if ((rtm_addrs & RTA_DST) == 0) 1241 return; 1242 switch (soup->so_dst->sa.sa_family) { 1243 case AF_INET: 1244 #ifdef INET6 1245 case AF_INET6: 1246 #endif 1247 #ifndef SMALL 1248 case AF_APPLETALK: 1249 #endif /* SMALL */ 1250 case 0: 1251 return; 1252 } 1253 cp1 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_dst; 1254 cp2 = soup->so_dst->sa.sa_len + 1 + (char *)soup->so_dst; 1255 while (cp2 > cp1) 1256 *--cp2 = 0; 1257 cp2 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_mask; 1258 while (cp1 > soup->so_dst->sa.sa_data) 1259 *--cp1 &= *--cp2; 1260 } 1261 1262 const char * const msgtypes[] = { 1263 [RTM_ADD] = "RTM_ADD: Add Route", 1264 [RTM_DELETE] = "RTM_DELETE: Delete Route", 1265 [RTM_CHANGE] = "RTM_CHANGE: Change Metrics or flags", 1266 [RTM_GET] = "RTM_GET: Report Metrics", 1267 [RTM_LOSING] = "RTM_LOSING: Kernel Suspects Partitioning", 1268 [RTM_REDIRECT] = "RTM_REDIRECT: Told to use different route", 1269 [RTM_MISS] = "RTM_MISS: Lookup failed on this address", 1270 [RTM_LOCK] = "RTM_LOCK: fix specified metrics", 1271 [RTM_OLDADD] = "RTM_OLDADD: caused by SIOCADDRT", 1272 [RTM_OLDDEL] = "RTM_OLDDEL: caused by SIOCDELRT", 1273 [RTM_RESOLVE] = "RTM_RESOLVE: Route created by cloning", 1274 [RTM_NEWADDR] = "RTM_NEWADDR: address being added to iface", 1275 [RTM_DELADDR] = "RTM_DELADDR: address being removed from iface", 1276 [RTM_OOIFINFO] = "RTM_OOIFINFO: iface status change (pre-1.5)", 1277 [RTM_OIFINFO] = "RTM_OIFINFO: iface status change (pre-64bit time)", 1278 [RTM_IFANNOUNCE] = "RTM_IFANNOUNCE: iface arrival/departure", 1279 [RTM_IEEE80211] = "RTM_IEEE80211: IEEE80211 wireless event", 1280 [RTM_IFINFO] = "RTM_IFINFO: iface status change", 1281 [RTM_CHGADDR] = "RTM_CHGADDR: address being changed on iface", 1282 }; 1283 1284 const char metricnames[] = 1285 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1286 const char routeflags[] = 1287 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1288 const char ifnetflags[] = 1289 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1290 const char addrnames[] = 1291 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD\011TAG"; 1292 1293 1294 #ifndef SMALL 1295 static const char * 1296 linkstate(struct if_msghdr *ifm) 1297 { 1298 static char buf[64]; 1299 1300 switch (ifm->ifm_data.ifi_link_state) { 1301 case LINK_STATE_UNKNOWN: 1302 return "carrier: unknown"; 1303 case LINK_STATE_DOWN: 1304 return "carrier: no carrier"; 1305 case LINK_STATE_UP: 1306 return "carrier: active"; 1307 default: 1308 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1309 ifm->ifm_data.ifi_link_state); 1310 return buf; 1311 } 1312 } 1313 #endif /* SMALL */ 1314 1315 static void 1316 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1317 { 1318 struct if_msghdr *ifm; 1319 struct ifa_msghdr *ifam; 1320 struct if_announcemsghdr *ifan; 1321 union { 1322 struct ieee80211_join_event join; 1323 struct ieee80211_leave_event leave; 1324 struct ieee80211_replay_event replay; 1325 struct ieee80211_michael_event michael; 1326 } ev; 1327 size_t evlen = 0; 1328 1329 if (verbose == 0) 1330 return; 1331 if (rtm->rtm_version != RTM_VERSION) { 1332 (void)printf("routing message version %d not understood\n", 1333 rtm->rtm_version); 1334 return; 1335 } 1336 if (msgtypes[rtm->rtm_type]) 1337 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1338 else 1339 (void)printf("#%d: ", rtm->rtm_type); 1340 (void)printf("len %d, ", rtm->rtm_msglen); 1341 switch (rtm->rtm_type) { 1342 case RTM_IFINFO: 1343 ifm = (struct if_msghdr *)rtm; 1344 (void)printf("if# %d, %s, flags: ", ifm->ifm_index, 1345 #ifdef SMALL 1346 "" 1347 #else 1348 linkstate(ifm) 1349 #endif /* SMALL */ 1350 ); 1351 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1352 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1353 break; 1354 case RTM_NEWADDR: 1355 case RTM_DELADDR: 1356 case RTM_CHGADDR: 1357 ifam = (struct ifa_msghdr *)rtm; 1358 (void)printf("metric %d, flags: ", ifam->ifam_metric); 1359 bprintf(stdout, ifam->ifam_flags, routeflags); 1360 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1361 break; 1362 case RTM_IEEE80211: 1363 ifan = (struct if_announcemsghdr *)rtm; 1364 (void)printf("if# %d, what: ", ifan->ifan_index); 1365 switch (ifan->ifan_what) { 1366 case RTM_IEEE80211_ASSOC: 1367 printf("associate"); 1368 break; 1369 case RTM_IEEE80211_REASSOC: 1370 printf("re-associate"); 1371 break; 1372 case RTM_IEEE80211_DISASSOC: 1373 printf("disassociate"); 1374 break; 1375 case RTM_IEEE80211_SCAN: 1376 printf("scan complete"); 1377 break; 1378 case RTM_IEEE80211_JOIN: 1379 evlen = sizeof(ev.join); 1380 printf("join"); 1381 break; 1382 case RTM_IEEE80211_LEAVE: 1383 evlen = sizeof(ev.leave); 1384 printf("leave"); 1385 break; 1386 case RTM_IEEE80211_MICHAEL: 1387 evlen = sizeof(ev.michael); 1388 printf("michael"); 1389 break; 1390 case RTM_IEEE80211_REPLAY: 1391 evlen = sizeof(ev.replay); 1392 printf("replay"); 1393 break; 1394 default: 1395 evlen = 0; 1396 printf("#%d", ifan->ifan_what); 1397 break; 1398 } 1399 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1400 printf(" (truncated)\n"); 1401 break; 1402 } 1403 (void)memcpy(&ev, (ifan + 1), evlen); 1404 switch (ifan->ifan_what) { 1405 case RTM_IEEE80211_JOIN: 1406 case RTM_IEEE80211_LEAVE: 1407 printf(" mac %" PRIETHER, 1408 PRIETHER_ARGS(ev.join.iev_addr)); 1409 break; 1410 case RTM_IEEE80211_REPLAY: 1411 case RTM_IEEE80211_MICHAEL: 1412 printf(" src %" PRIETHER " dst %" PRIETHER 1413 " cipher %" PRIu8 " keyix %" PRIu8, 1414 PRIETHER_ARGS(ev.replay.iev_src), 1415 PRIETHER_ARGS(ev.replay.iev_dst), 1416 ev.replay.iev_cipher, 1417 ev.replay.iev_keyix); 1418 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1419 printf(" key rsc %#" PRIx64 1420 " frame rsc %#" PRIx64, 1421 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1422 } 1423 break; 1424 default: 1425 break; 1426 } 1427 printf("\n"); 1428 break; 1429 case RTM_IFANNOUNCE: 1430 ifan = (struct if_announcemsghdr *)rtm; 1431 (void)printf("if# %d, what: ", ifan->ifan_index); 1432 switch (ifan->ifan_what) { 1433 case IFAN_ARRIVAL: 1434 printf("arrival"); 1435 break; 1436 case IFAN_DEPARTURE: 1437 printf("departure"); 1438 break; 1439 default: 1440 printf("#%d", ifan->ifan_what); 1441 break; 1442 } 1443 printf("\n"); 1444 break; 1445 default: 1446 (void)printf("pid %d, seq %d, errno %d, flags: ", 1447 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1448 bprintf(stdout, rtm->rtm_flags, routeflags); 1449 pmsg_common(rtm); 1450 } 1451 } 1452 1453 #ifndef SMALL 1454 static int 1455 print_getmsg(struct rt_msghdr *rtm, int msglen, struct sou *soup) 1456 { 1457 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL, *mpls = NULL; 1458 struct sockaddr_dl *ifp = NULL; 1459 struct sockaddr *sa; 1460 char *cp; 1461 int i; 1462 1463 if (! shortoutput) { 1464 (void)printf(" route to: %s\n", 1465 routename(&soup->so_dst->sa, nflag)); 1466 } 1467 if (rtm->rtm_version != RTM_VERSION) { 1468 warnx("routing message version %d not understood", 1469 rtm->rtm_version); 1470 return 1; 1471 } 1472 if (rtm->rtm_msglen > msglen) { 1473 warnx("message length mismatch, in packet %d, returned %d", 1474 rtm->rtm_msglen, msglen); 1475 } 1476 if (rtm->rtm_errno) { 1477 warnx("RTM_GET: %s (errno %d)", 1478 strerror(rtm->rtm_errno), rtm->rtm_errno); 1479 return 1; 1480 } 1481 cp = ((char *)(rtm + 1)); 1482 if (rtm->rtm_addrs) 1483 for (i = 1; i; i <<= 1) 1484 if (i & rtm->rtm_addrs) { 1485 sa = (struct sockaddr *)cp; 1486 switch (i) { 1487 case RTA_DST: 1488 dst = sa; 1489 break; 1490 case RTA_GATEWAY: 1491 gate = sa; 1492 break; 1493 case RTA_NETMASK: 1494 mask = sa; 1495 break; 1496 case RTA_IFP: 1497 if (sa->sa_family == AF_LINK && 1498 ((struct sockaddr_dl *)sa)->sdl_nlen) 1499 ifp = (struct sockaddr_dl *)sa; 1500 break; 1501 case RTA_IFA: 1502 ifa = sa; 1503 break; 1504 case RTA_TAG: 1505 mpls = sa; 1506 break; 1507 } 1508 RT_ADVANCE(cp, sa); 1509 } 1510 if (dst && mask) 1511 mask->sa_family = dst->sa_family; /* XXX */ 1512 if (dst && ! shortoutput) 1513 (void)printf("destination: %s\n", 1514 routename(dst, nflag)); 1515 if (mask && ! shortoutput) { 1516 int savenflag = nflag; 1517 1518 nflag = RT_NFLAG; 1519 (void)printf(" mask: %s\n", 1520 routename(mask, nflag)); 1521 nflag = savenflag; 1522 } 1523 if (gate && rtm->rtm_flags & RTF_GATEWAY) { 1524 const char *name; 1525 1526 name = routename(gate, nflag); 1527 if (shortoutput) { 1528 if (*name == '\0') 1529 return 1; 1530 (void)printf("%s\n", name); 1531 } else 1532 (void)printf(" gateway: %s\n", name); 1533 } 1534 if (mpls) { 1535 const char *name; 1536 name = routename(mpls, nflag); 1537 if(shortoutput) { 1538 if (*name == '\0') 1539 return 1; 1540 printf("%s\n", name); 1541 } else 1542 printf(" Tag: %s\n", name); 1543 } 1544 1545 if (ifa && ! shortoutput) 1546 (void)printf(" local addr: %s\n", 1547 routename(ifa, nflag)); 1548 if (ifp && ! shortoutput) 1549 (void)printf(" interface: %.*s\n", 1550 ifp->sdl_nlen, ifp->sdl_data); 1551 if (! shortoutput) { 1552 (void)printf(" flags: "); 1553 bprintf(stdout, rtm->rtm_flags, routeflags); 1554 } 1555 1556 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1557 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1558 1559 if (! shortoutput) { 1560 (void)printf("\n%s\n", "\ 1561 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1562 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1563 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1564 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1565 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1566 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1567 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1568 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1569 if (rtm->rtm_rmx.rmx_expire) 1570 rtm->rtm_rmx.rmx_expire -= time(0); 1571 printf("%8"PRId64"%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1572 } 1573 #undef lock 1574 #undef msec 1575 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1576 1577 if (shortoutput) 1578 return (rtm->rtm_addrs & RTF_GATEWAY) == 0; 1579 else if (verbose) 1580 pmsg_common(rtm); 1581 else if (rtm->rtm_addrs &~ RTA_IGN) { 1582 (void)printf("sockaddrs: "); 1583 bprintf(stdout, rtm->rtm_addrs, addrnames); 1584 putchar('\n'); 1585 } 1586 return 0; 1587 #undef RTA_IGN 1588 } 1589 #endif /* SMALL */ 1590 1591 void 1592 pmsg_common(struct rt_msghdr *rtm) 1593 { 1594 (void)printf("\nlocks: "); 1595 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1596 (void)printf(" inits: "); 1597 bprintf(stdout, rtm->rtm_inits, metricnames); 1598 pmsg_addrs((char *)(rtm + 1), rtm->rtm_addrs); 1599 } 1600 1601 static void 1602 extract_addrs(const char *cp, int addrs, const struct sockaddr *sa[], int *nmfp) 1603 { 1604 int i, nmf = -1; 1605 1606 for (i = 0; i < RTAX_MAX; i++) { 1607 if ((1 << i) & addrs) { 1608 sa[i] = (const struct sockaddr *)cp; 1609 if ((i == RTAX_DST || i == RTAX_IFA) && 1610 nmf == -1) 1611 nmf = sa[i]->sa_family; 1612 RT_ADVANCE(cp, sa[i]); 1613 } else 1614 sa[i] = NULL; 1615 } 1616 1617 if (nmfp != NULL) 1618 *nmfp = nmf; 1619 } 1620 1621 static void 1622 pmsg_addrs(const char *cp, int addrs) 1623 { 1624 const struct sockaddr *sa[RTAX_MAX]; 1625 int i, nmf; 1626 1627 if (addrs != 0) { 1628 (void)printf("\nsockaddrs: "); 1629 bprintf(stdout, addrs, addrnames); 1630 (void)putchar('\n'); 1631 extract_addrs(cp, addrs, sa, &nmf); 1632 for (i = 0; i < RTAX_MAX; i++) { 1633 if (sa[i] == NULL) 1634 continue; 1635 1636 if (i == RTAX_NETMASK && sa[i]->sa_len) 1637 (void)printf(" %s", 1638 netmask_string(sa[i], -1, nmf)); 1639 else 1640 (void)printf(" %s", 1641 routename(sa[i], nflag)); 1642 } 1643 } 1644 (void)putchar('\n'); 1645 (void)fflush(stdout); 1646 } 1647 1648 static void 1649 bprintf(FILE *fp, int b, const char *f) 1650 { 1651 int i; 1652 int gotsome = 0; 1653 const uint8_t *s = (const uint8_t *)f; 1654 1655 if (b == 0) { 1656 fputs("none", fp); 1657 return; 1658 } 1659 while ((i = *s++) != 0) { 1660 if (b & (1 << (i-1))) { 1661 if (gotsome == 0) 1662 i = '<'; 1663 else 1664 i = ','; 1665 (void)putc(i, fp); 1666 gotsome = 1; 1667 for (; (i = *s) > 32; s++) 1668 (void)putc(i, fp); 1669 } else 1670 while (*s > 32) 1671 s++; 1672 } 1673 if (gotsome) 1674 (void)putc('>', fp); 1675 } 1676 1677 int 1678 keyword(const char *cp) 1679 { 1680 struct keytab *kt = keywords; 1681 1682 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1683 kt++; 1684 return kt->kt_i; 1685 } 1686 1687 static void 1688 sodump(sup su, const char *which) 1689 { 1690 #ifdef INET6 1691 char ntop_buf[NI_MAXHOST]; 1692 #endif 1693 1694 switch (su->sa.sa_family) { 1695 case AF_INET: 1696 (void)printf("%s: inet %s; ", 1697 which, inet_ntoa(su->sin.sin_addr)); 1698 break; 1699 #ifndef SMALL 1700 case AF_APPLETALK: 1701 (void)printf("%s: atalk %d.%d; ", 1702 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1703 break; 1704 #endif 1705 case AF_LINK: 1706 (void)printf("%s: link %s; ", 1707 which, link_ntoa(&su->sdl)); 1708 break; 1709 #ifdef INET6 1710 case AF_INET6: 1711 (void)printf("%s: inet6 %s; ", 1712 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 1713 ntop_buf, sizeof(ntop_buf))); 1714 break; 1715 #endif 1716 #ifndef SMALL 1717 case AF_MPLS: 1718 { 1719 union mpls_shim ms; 1720 const union mpls_shim *pms; 1721 int psize = sizeof(struct sockaddr_mpls); 1722 1723 ms.s_addr = ntohl(su->smpls.smpls_addr.s_addr); 1724 printf("%s: mpls %u; ", 1725 which, ms.shim.label); 1726 1727 pms = &su->smpls.smpls_addr; 1728 while(psize < su->smpls.smpls_len) { 1729 pms++; 1730 ms.s_addr = ntohl(pms->s_addr); 1731 printf("%u; ", ms.shim.label); 1732 psize += sizeof(ms); 1733 } 1734 break; 1735 } 1736 #endif /* SMALL */ 1737 default: 1738 (void)printf("%s: (%d) %s; ", 1739 which, su->sa.sa_family, any_ntoa(&su->sa)); 1740 } 1741 (void)fflush(stdout); 1742 } 1743 1744 /* States*/ 1745 #define VIRGIN 0 1746 #define GOTONE 1 1747 #define GOTTWO 2 1748 /* Inputs */ 1749 #define DIGIT (4*0) 1750 #define END (4*1) 1751 #define DELIM (4*2) 1752 1753 static void 1754 sockaddr(const char *addr, struct sockaddr *sa) 1755 { 1756 char *cp = (char *)sa; 1757 int size = sa->sa_len; 1758 char *cplim = cp + size; 1759 int byte = 0, state = VIRGIN, new = 0; 1760 1761 (void)memset(cp, 0, size); 1762 cp++; 1763 do { 1764 if ((*addr >= '0') && (*addr <= '9')) { 1765 new = *addr - '0'; 1766 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1767 new = *addr - 'a' + 10; 1768 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1769 new = *addr - 'A' + 10; 1770 } else if (*addr == 0) 1771 state |= END; 1772 else 1773 state |= DELIM; 1774 addr++; 1775 switch (state /* | INPUT */) { 1776 case GOTTWO | DIGIT: 1777 *cp++ = byte; /*FALLTHROUGH*/ 1778 case VIRGIN | DIGIT: 1779 state = GOTONE; byte = new; continue; 1780 case GOTONE | DIGIT: 1781 state = GOTTWO; byte = new + (byte << 4); continue; 1782 default: /* | DELIM */ 1783 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1784 case GOTONE | END: 1785 case GOTTWO | END: 1786 *cp++ = byte; /* FALLTHROUGH */ 1787 case VIRGIN | END: 1788 break; 1789 } 1790 break; 1791 } while (cp < cplim); 1792 sa->sa_len = cp - (char *)sa; 1793 } 1794
Indexes created Sun Sep 28 07:09:56 GMT 2025