1 /* $NetBSD: route.c,v 1.154 2016/04/04 07:37:07 ozaki-r 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 1.154 2016/04/04 07:37:07 ozaki-r 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 <netatalk/at.h> 58 #include <netmpls/mpls.h> 59 #include <arpa/inet.h> 60 #include <netdb.h> 61 62 #include <errno.h> 63 #include <unistd.h> 64 #include <stdio.h> 65 #include <ctype.h> 66 #include <stdlib.h> 67 #include <string.h> 68 #include <time.h> 69 #include <paths.h> 70 #include <err.h> 71 72 #include "keywords.h" 73 #include "extern.h" 74 #include "prog_ops.h" 75 #include "rtutil.h" 76 77 union sockunion { 78 struct sockaddr sa; 79 struct sockaddr_in sin; 80 #ifdef INET6 81 struct sockaddr_in6 sin6; 82 #endif 83 struct sockaddr_at sat; 84 struct sockaddr_dl sdl; 85 #ifndef SMALL 86 struct sockaddr_mpls smpls; 87 #endif /* SMALL */ 88 struct sockaddr_storage sstorage; 89 }; 90 91 typedef union sockunion *sup; 92 93 struct sou { 94 union sockunion *so_dst, *so_gate, *so_mask, *so_genmask, *so_ifa, 95 *so_ifp, *so_mpls; 96 }; 97 98 static const char *route_strerror(int); 99 static void set_metric(const char *, int); 100 static int newroute(int, char *const *); 101 static void inet_makenetandmask(u_int32_t, struct sockaddr_in *, struct sou *); 102 #ifdef INET6 103 static int inet6_makenetandmask(const struct sockaddr_in6 *, struct sou *); 104 #endif 105 static int getaddr(int, const char *, struct hostent **, struct sou *); 106 static int flushroutes(int, char *const [], int); 107 static char *netmask_string(const struct sockaddr *, int, int); 108 static int prefixlen(const char *, struct sou *); 109 #ifndef SMALL 110 static void interfaces(void); 111 __dead static void monitor(void); 112 static int print_getmsg(struct rt_msghdr *, int, struct sou *); 113 static const char *linkstate(struct if_msghdr *); 114 static sup readtag(sup, const char *); 115 static void addtag(sup, const char *, int); 116 #endif /* SMALL */ 117 static int rtmsg(int, int, struct sou *); 118 static void mask_addr(struct sou *); 119 static void print_rtmsg(struct rt_msghdr *, int); 120 static void pmsg_common(struct rt_msghdr *); 121 static void pmsg_addrs(const char *, int); 122 static void bprintf(FILE *, int, const char *); 123 static void sodump(sup, const char *); 124 static void sockaddr(const char *, struct sockaddr *); 125 126 int pid, rtm_addrs; 127 int sock; 128 int forcehost, forcenet, doflush, af; 129 int iflag, Lflag, nflag, qflag, tflag, Sflag, Tflag; 130 int 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[] = "dfLnqSsTtv"; 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 'L': 172 Lflag = RT_LFLAG; 173 break; 174 case 'n': 175 nflag = RT_NFLAG; 176 break; 177 case 'q': 178 qflag = 1; 179 break; 180 case 'S': 181 Sflag = 1; 182 break; 183 case 's': 184 shortoutput = 1; 185 break; 186 case 'T': 187 Tflag = RT_TFLAG; 188 break; 189 case 't': 190 tflag = 1; 191 break; 192 case 'v': 193 verbose = RT_VFLAG; 194 break; 195 case '?': 196 default: 197 usage(NULL); 198 /*NOTREACHED*/ 199 } 200 argc -= optind; 201 argv += optind; 202 203 if (prog_init && prog_init() == -1) 204 err(1, "init failed"); 205 206 pid = prog_getpid(); 207 if (tflag) 208 sock = prog_open("/dev/null", O_WRONLY, 0); 209 else 210 sock = prog_socket(PF_ROUTE, SOCK_RAW, 0); 211 if (sock < 0) 212 err(EXIT_FAILURE, "socket"); 213 214 if (*argv == NULL) { 215 if (doflush) 216 ch = K_FLUSH; 217 else 218 goto no_cmd; 219 } else 220 ch = keyword(*argv); 221 222 switch (ch) { 223 #ifndef SMALL 224 case K_GET: 225 #endif /* SMALL */ 226 case K_CHANGE: 227 case K_ADD: 228 case K_DELETE: 229 if (doflush) 230 (void)flushroutes(1, argv, 0); 231 return newroute(argc, argv); 232 233 case K_SHOW: 234 show(argc, argv, Lflag|nflag|Tflag|verbose); 235 return 0; 236 237 #ifndef SMALL 238 case K_MONITOR: 239 monitor(); 240 return 0; 241 242 #endif /* SMALL */ 243 case K_FLUSH: 244 return flushroutes(argc, argv, 0); 245 246 case K_FLUSHALL: 247 return flushroutes(argc, argv, 1); 248 no_cmd: 249 default: 250 usage(*argv); 251 /*NOTREACHED*/ 252 } 253 } 254 255 static char * 256 netmask_string(const struct sockaddr *mask, int len, int family) 257 { 258 static char smask[INET6_ADDRSTRLEN]; 259 struct sockaddr_in nsin; 260 struct sockaddr_in6 nsin6; 261 262 if (len >= 0) 263 snprintf(smask, sizeof(smask), "%d", len); 264 else { 265 switch (family) { 266 case AF_INET: 267 memset(&nsin, 0, sizeof(nsin)); 268 memcpy(&nsin, mask, mask->sa_len); 269 snprintf(smask, sizeof(smask), "%s", 270 inet_ntoa(nsin.sin_addr)); 271 break; 272 case AF_INET6: 273 memset(&nsin6, 0, sizeof(nsin6)); 274 memcpy(&nsin6, mask, mask->sa_len); 275 inet_ntop(family, &nsin6.sin6_addr, smask, 276 sizeof(smask)); 277 break; 278 default: 279 snprintf(smask, sizeof(smask), "%s", any_ntoa(mask)); 280 } 281 } 282 283 return smask; 284 } 285 /* 286 * Purge all entries in the routing tables not 287 * associated with network interfaces. 288 */ 289 static int 290 flushroutes(int argc, char * const argv[], int doall) 291 { 292 struct sockaddr *sa; 293 size_t needed; 294 int flags, mib[6], rlen, seqno; 295 char *buf, *next, *lim; 296 const char *afname; 297 struct rt_msghdr *rtm; 298 299 flags = 0; 300 af = AF_UNSPEC; 301 /* Don't want to read back our messages */ 302 prog_shutdown(sock, SHUT_RD); 303 parse_show_opts(argc, argv, &af, &flags, &afname, false); 304 mib[0] = CTL_NET; 305 mib[1] = PF_ROUTE; 306 mib[2] = 0; /* protocol */ 307 mib[3] = 0; /* wildcard address family */ 308 mib[4] = NET_RT_DUMP; 309 mib[5] = 0; /* no flags */ 310 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 311 err(EXIT_FAILURE, "route-sysctl-estimate"); 312 buf = lim = NULL; 313 if (needed) { 314 if ((buf = malloc(needed)) == NULL) 315 err(EXIT_FAILURE, "malloc"); 316 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 317 err(EXIT_FAILURE, "actual retrieval of routing table"); 318 lim = buf + needed; 319 } 320 if (verbose) { 321 (void)printf("Examining routing table from sysctl\n"); 322 if (af != AF_UNSPEC) 323 printf("(address family %s)\n", afname); 324 } 325 if (needed == 0) 326 return 0; 327 seqno = 0; /* ??? */ 328 for (next = buf; next < lim; next += rtm->rtm_msglen) { 329 rtm = (struct rt_msghdr *)next; 330 sa = (struct sockaddr *)(rtm + 1); 331 if (verbose) 332 print_rtmsg(rtm, rtm->rtm_msglen); 333 if ((rtm->rtm_flags & flags) != flags) 334 continue; 335 if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC)) && !doall) 336 continue; 337 if (af != AF_UNSPEC && sa->sa_family != af) 338 continue; 339 if (debugonly) 340 continue; 341 rtm->rtm_type = RTM_DELETE; 342 rtm->rtm_seq = seqno; 343 if ((rlen = prog_write(sock, next, 344 rtm->rtm_msglen)) < 0) { 345 warnx("writing to routing socket: %s", 346 route_strerror(errno)); 347 return 1; 348 } 349 if (rlen < (int)rtm->rtm_msglen) { 350 warnx("write to routing socket, got %d for rlen", rlen); 351 return 1; 352 } 353 seqno++; 354 if (qflag) 355 continue; 356 if (verbose) 357 print_rtmsg(rtm, rlen); 358 else { 359 (void)printf("%-20.20s ", netname(sa, NULL, nflag)); 360 sa = (struct sockaddr *)(RT_ROUNDUP(sa->sa_len) + 361 (char *)sa); 362 (void)printf("%-20.20s ", routename(sa, nflag)); 363 (void)printf("done\n"); 364 } 365 } 366 free(buf); 367 return 0; 368 } 369 370 static const char * 371 route_strerror(int error) 372 { 373 374 switch (error) { 375 case ESRCH: 376 return "not in table"; 377 case EBUSY: 378 return "entry in use"; 379 case ENOBUFS: 380 return "routing table overflow"; 381 default: 382 return strerror(error); 383 } 384 } 385 386 static void 387 set_metric(const char *value, int key) 388 { 389 int flag = 0; 390 uint64_t noval, *valp = &noval; 391 392 switch (key) { 393 #define caseof(x, y, z) \ 394 case x: valp = (uint64_t *)&rt_metrics.z; flag = y; break 395 caseof(K_MTU, RTV_MTU, rmx_mtu); 396 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 397 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 398 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 399 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 400 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 401 caseof(K_RTT, RTV_RTT, rmx_rtt); 402 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 403 } 404 rtm_inits |= flag; 405 if (lockrest || locking) 406 rt_metrics.rmx_locks |= flag; 407 if (locking) 408 locking = 0; 409 *valp = strtoul(value, NULL, 0); 410 } 411 412 static int 413 newroute(int argc, char *const *argv) 414 { 415 const char *cmd, *dest = "", *gateway = ""; 416 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 417 int key; 418 struct hostent *hp = 0; 419 struct sou sou, *soup = &sou; 420 421 sou.so_dst = calloc(1, sizeof(union sockunion)); 422 sou.so_gate = calloc(1, sizeof(union sockunion)); 423 sou.so_mask = calloc(1, sizeof(union sockunion)); 424 sou.so_genmask = calloc(1, sizeof(union sockunion)); 425 sou.so_ifa = calloc(1, sizeof(union sockunion)); 426 sou.so_ifp = calloc(1, sizeof(union sockunion)); 427 sou.so_mpls = calloc(1, sizeof(union sockunion)); 428 429 if (sou.so_dst == NULL || sou.so_gate == NULL || sou.so_mask == NULL || 430 sou.so_genmask == NULL || sou.so_ifa == NULL || sou.so_ifp == NULL || 431 sou.so_mpls == NULL) 432 errx(EXIT_FAILURE, "Cannot allocate memory"); 433 434 cmd = argv[0]; 435 af = AF_UNSPEC; 436 if (*cmd != 'g') { 437 /* Don't want to read back our messages */ 438 prog_shutdown(sock, SHUT_RD); 439 } 440 while (--argc > 0) { 441 if (**(++argv)== '-') { 442 switch (key = keyword(1 + *argv)) { 443 444 case K_SA: 445 af = PF_ROUTE; 446 aflen = sizeof(union sockunion); 447 break; 448 449 #ifndef SMALL 450 case K_ATALK: 451 af = AF_APPLETALK; 452 aflen = sizeof(struct sockaddr_at); 453 break; 454 #endif 455 456 case K_INET: 457 af = AF_INET; 458 aflen = sizeof(struct sockaddr_in); 459 break; 460 461 #ifdef INET6 462 case K_INET6: 463 af = AF_INET6; 464 aflen = sizeof(struct sockaddr_in6); 465 break; 466 #endif 467 468 case K_LINK: 469 af = AF_LINK; 470 aflen = sizeof(struct sockaddr_dl); 471 break; 472 473 #ifndef SMALL 474 case K_MPLS: 475 af = AF_MPLS; 476 aflen = sizeof(struct sockaddr_mpls); 477 break; 478 case K_TAG: 479 if (!--argc) 480 usage(1+*argv); 481 af = AF_MPLS; 482 aflen = sizeof(struct sockaddr_mpls); 483 (void)getaddr(RTA_TAG, *++argv, 0, soup); 484 break; 485 #endif /* SMALL */ 486 487 case K_IFACE: 488 case K_INTERFACE: 489 iflag++; 490 break; 491 case K_NOSTATIC: 492 flags &= ~RTF_STATIC; 493 break; 494 case K_LOCK: 495 locking = 1; 496 break; 497 case K_LOCKREST: 498 lockrest = 1; 499 break; 500 case K_HOST: 501 forcehost++; 502 break; 503 case K_REJECT: 504 flags |= RTF_REJECT; 505 break; 506 case K_NOREJECT: 507 flags &= ~RTF_REJECT; 508 break; 509 case K_BLACKHOLE: 510 flags |= RTF_BLACKHOLE; 511 break; 512 case K_NOBLACKHOLE: 513 flags &= ~RTF_BLACKHOLE; 514 break; 515 case K_PROTO1: 516 flags |= RTF_PROTO1; 517 break; 518 case K_PROTO2: 519 flags |= RTF_PROTO2; 520 break; 521 case K_PROXY: 522 flags |= RTF_ANNOUNCE; 523 break; 524 case K_CONNECTED: 525 flags |= RTF_CONNECTED; 526 break; 527 case K_NOCONNECTED: 528 flags &= ~RTF_CONNECTED; 529 break; 530 case K_STATIC: 531 flags |= RTF_STATIC; 532 break; 533 case K_IFA: 534 if (!--argc) 535 usage(1+*argv); 536 (void)getaddr(RTA_IFA, *++argv, 0, soup); 537 break; 538 case K_IFP: 539 if (!--argc) 540 usage(1+*argv); 541 (void)getaddr(RTA_IFP, *++argv, 0, soup); 542 break; 543 case K_GENMASK: 544 if (!--argc) 545 usage(1+*argv); 546 (void)getaddr(RTA_GENMASK, *++argv, 0, soup); 547 break; 548 case K_GATEWAY: 549 if (!--argc) 550 usage(1+*argv); 551 (void)getaddr(RTA_GATEWAY, *++argv, 0, soup); 552 break; 553 case K_DST: 554 if (!--argc) 555 usage(1+*argv); 556 ishost = getaddr(RTA_DST, *++argv, &hp, soup); 557 dest = *argv; 558 break; 559 case K_NETMASK: 560 if (!--argc) 561 usage(1+*argv); 562 (void)getaddr(RTA_NETMASK, *++argv, 0, soup); 563 /* FALLTHROUGH */ 564 case K_NET: 565 forcenet++; 566 break; 567 case K_PREFIXLEN: 568 if (!--argc) 569 usage(1+*argv); 570 ishost = prefixlen(*++argv, soup); 571 break; 572 case K_MTU: 573 case K_HOPCOUNT: 574 case K_EXPIRE: 575 case K_RECVPIPE: 576 case K_SENDPIPE: 577 case K_SSTHRESH: 578 case K_RTT: 579 case K_RTTVAR: 580 if (!--argc) 581 usage(1+*argv); 582 set_metric(*++argv, key); 583 break; 584 default: 585 usage(1+*argv); 586 } 587 } else { 588 if ((rtm_addrs & RTA_DST) == 0) { 589 dest = *argv; 590 ishost = getaddr(RTA_DST, *argv, &hp, soup); 591 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 592 gateway = *argv; 593 (void)getaddr(RTA_GATEWAY, *argv, &hp, soup); 594 } else { 595 ret = atoi(*argv); 596 597 if (ret == 0) { 598 if (strcmp(*argv, "0") == 0) { 599 if (!qflag) { 600 warnx("%s, %s", 601 "old usage of trailing 0", 602 "assuming route to if"); 603 } 604 } else 605 usage(NULL); 606 iflag = 1; 607 continue; 608 } else if (ret > 0 && ret < 10) { 609 if (!qflag) { 610 warnx("%s, %s", 611 "old usage of trailing digit", 612 "assuming route via gateway"); 613 } 614 iflag = 0; 615 continue; 616 } 617 (void)getaddr(RTA_NETMASK, *argv, 0, soup); 618 } 619 } 620 } 621 if ((rtm_addrs & RTA_DST) == 0) 622 errx(EXIT_FAILURE, "missing destination specification"); 623 if (*cmd == 'a' && (rtm_addrs & RTA_GATEWAY) == 0) 624 errx(EXIT_FAILURE, "missing gateway specification"); 625 if (forcehost && forcenet) 626 errx(EXIT_FAILURE, "-host and -net conflict"); 627 else if (forcehost) 628 ishost = 1; 629 else if (forcenet) 630 ishost = 0; 631 flags |= RTF_UP; 632 if (ishost) 633 flags |= RTF_HOST; 634 if (iflag == 0) 635 flags |= RTF_GATEWAY; 636 for (attempts = 1; ; attempts++) { 637 errno = 0; 638 if ((ret = rtmsg(*cmd, flags, soup)) == 0) 639 break; 640 if (errno != ENETUNREACH && errno != ESRCH) 641 break; 642 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 643 hp->h_addr_list++; 644 memmove(&soup->so_gate->sin.sin_addr, hp->h_addr_list[0], 645 hp->h_length); 646 } else 647 break; 648 } 649 if (*cmd == 'g' || qflag) 650 goto out; 651 652 oerrno = errno; 653 (void)printf("%s %s %s", cmd, ishost? "host" : "net", dest); 654 if (*gateway) { 655 (void)printf(": gateway %s", gateway); 656 if (attempts > 1 && ret == 0 && af == AF_INET) 657 (void)printf(" (%s)", 658 inet_ntoa(soup->so_gate->sin.sin_addr)); 659 } 660 if (ret == 0) 661 (void)printf("\n"); 662 else 663 (void)printf(": %s\n", route_strerror(oerrno)); 664 out: 665 free(sou.so_dst); 666 free(sou.so_gate); 667 free(sou.so_mask); 668 free(sou.so_genmask); 669 free(sou.so_ifa); 670 free(sou.so_ifp); 671 free(sou.so_mpls); 672 673 return ret != 0; 674 } 675 676 static void 677 inet_makenetandmask(const u_int32_t net, struct sockaddr_in * const isin, 678 struct sou *soup) 679 { 680 struct sockaddr_in *sin; 681 u_int32_t addr, mask = 0; 682 char *cp; 683 684 rtm_addrs |= RTA_NETMASK; 685 if (net == 0) 686 mask = addr = 0; 687 else if (net < 128) { 688 addr = net << IN_CLASSA_NSHIFT; 689 mask = IN_CLASSA_NET; 690 } else if (net < 192) { 691 addr = net << IN_CLASSA_NSHIFT; 692 mask = IN_CLASSB_NET; 693 } else if (net < 224) { 694 addr = net << IN_CLASSA_NSHIFT; 695 mask = IN_CLASSC_NET; 696 } else if (net < 256) { 697 addr = net << IN_CLASSA_NSHIFT; 698 mask = IN_CLASSD_NET; 699 } else if (net < 49152) { /* 192 * 256 */ 700 addr = net << IN_CLASSB_NSHIFT; 701 mask = IN_CLASSB_NET; 702 } else if (net < 57344) { /* 224 * 256 */ 703 addr = net << IN_CLASSB_NSHIFT; 704 mask = IN_CLASSC_NET; 705 } else if (net < 65536) { 706 addr = net << IN_CLASSB_NSHIFT; 707 mask = IN_CLASSB_NET; 708 } else if (net < 14680064L) { /* 224 * 65536 */ 709 addr = net << IN_CLASSC_NSHIFT; 710 mask = IN_CLASSC_NET; 711 } else if (net < 16777216L) { 712 addr = net << IN_CLASSC_NSHIFT; 713 mask = IN_CLASSD_NET; 714 } else { 715 addr = net; 716 if ((addr & IN_CLASSA_HOST) == 0) 717 mask = IN_CLASSA_NET; 718 else if ((addr & IN_CLASSB_HOST) == 0) 719 mask = IN_CLASSB_NET; 720 else if ((addr & IN_CLASSC_HOST) == 0) 721 mask = IN_CLASSC_NET; 722 else 723 mask = -1; 724 } 725 isin->sin_addr.s_addr = htonl(addr); 726 sin = &soup->so_mask->sin; 727 sin->sin_addr.s_addr = htonl(mask); 728 sin->sin_len = 0; 729 sin->sin_family = 0; 730 cp = (char *)(&sin->sin_addr + 1); 731 while (*--cp == 0 && cp > (char *)sin) 732 ; 733 sin->sin_len = 1 + cp - (char *)sin; 734 sin->sin_family = AF_INET; 735 } 736 737 #ifdef INET6 738 /* 739 * XXX the function may need more improvement... 740 */ 741 static int 742 inet6_makenetandmask(const struct sockaddr_in6 * const sin6, struct sou *soup) 743 { 744 const char *plen; 745 struct in6_addr in6; 746 747 plen = NULL; 748 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 749 sin6->sin6_scope_id == 0) { 750 plen = "0"; 751 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 752 /* aggregatable global unicast - RFC2374 */ 753 memset(&in6, 0, sizeof(in6)); 754 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 755 plen = "64"; 756 } 757 758 if (!plen || strcmp(plen, "128") == 0) 759 return 1; 760 else { 761 rtm_addrs |= RTA_NETMASK; 762 (void)prefixlen(plen, soup); 763 return 0; 764 } 765 } 766 #endif 767 768 /* 769 * Interpret an argument as a network address of some kind, 770 * returning 1 if a host address, 0 if a network address. 771 */ 772 static int 773 getaddr(int which, const char *s, struct hostent **hpp, struct sou *soup) 774 { 775 sup su; 776 struct hostent *hp; 777 struct netent *np; 778 u_int32_t val; 779 char *t; 780 int afamily; /* local copy of af so we can change it */ 781 782 if (af == AF_UNSPEC) { 783 af = AF_INET; 784 aflen = sizeof(struct sockaddr_in); 785 } 786 afamily = af; 787 rtm_addrs |= which; 788 switch (which) { 789 case RTA_DST: 790 su = soup->so_dst; 791 break; 792 case RTA_GATEWAY: 793 su = soup->so_gate; 794 break; 795 case RTA_NETMASK: 796 su = soup->so_mask; 797 break; 798 case RTA_GENMASK: 799 su = soup->so_genmask; 800 break; 801 case RTA_IFP: 802 su = soup->so_ifp; 803 afamily = AF_LINK; 804 break; 805 case RTA_IFA: 806 su = soup->so_ifa; 807 su->sa.sa_family = af; 808 break; 809 #ifndef SMALL 810 case RTA_TAG: 811 su = soup->so_mpls; 812 afamily = AF_MPLS; 813 break; 814 #endif 815 default: 816 su = NULL; 817 usage("Internal Error"); 818 /*NOTREACHED*/ 819 } 820 su->sa.sa_len = aflen; 821 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 822 if (strcmp(s, "default") == 0) { 823 switch (which) { 824 case RTA_DST: 825 forcenet++; 826 (void)getaddr(RTA_NETMASK, s, 0, soup); 827 break; 828 case RTA_NETMASK: 829 case RTA_GENMASK: 830 su->sa.sa_len = 0; 831 } 832 return 0; 833 } 834 switch (afamily) { 835 #ifdef INET6 836 case AF_INET6: 837 { 838 struct addrinfo hints, *res; 839 char *slash = 0; 840 841 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 842 *slash = '\0'; 843 memset(&hints, 0, sizeof(hints)); 844 hints.ai_family = afamily; /*AF_INET6*/ 845 hints.ai_flags = AI_NUMERICHOST; 846 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 847 if (getaddrinfo(s, "0", &hints, &res) != 0) { 848 hints.ai_flags = 0; 849 if (slash) { 850 *slash = '/'; 851 slash = 0; 852 } 853 if (getaddrinfo(s, "0", &hints, &res) != 0) 854 errx(EXIT_FAILURE, "%s: bad value", s); 855 } 856 if (slash) 857 *slash = '/'; 858 if (sizeof(su->sin6) != res->ai_addrlen) 859 errx(EXIT_FAILURE, "%s: bad value", s); 860 if (res->ai_next) { 861 errx(EXIT_FAILURE, 862 "%s: address resolved to multiple values", s); 863 } 864 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 865 freeaddrinfo(res); 866 inet6_putscopeid(&su->sin6, INET6_IS_ADDR_LINKLOCAL| 867 INET6_IS_ADDR_MC_LINKLOCAL); 868 if (hints.ai_flags == AI_NUMERICHOST) { 869 if (slash) 870 return prefixlen(slash + 1, soup); 871 if (which == RTA_DST) 872 return inet6_makenetandmask(&su->sin6, soup); 873 return 0; 874 } else 875 return 1; 876 } 877 #endif 878 879 case PF_ROUTE: 880 su->sa.sa_len = sizeof(*su); 881 sockaddr(s, &su->sa); 882 return 1; 883 884 #ifndef SMALL 885 case AF_APPLETALK: 886 t = strchr (s, '.'); 887 if (!t) { 888 badataddr: 889 errx(EXIT_FAILURE, "bad address: %s", s); 890 } 891 val = atoi (s); 892 if (val > 65535) 893 goto badataddr; 894 su->sat.sat_addr.s_net = val; 895 val = atoi (t); 896 if (val > 256) 897 goto badataddr; 898 su->sat.sat_addr.s_node = val; 899 rtm_addrs |= RTA_NETMASK; 900 return(forcehost || su->sat.sat_addr.s_node != 0); 901 case AF_MPLS: 902 if (which == RTA_DST) 903 soup->so_dst = readtag(su, s); 904 else if (which == RTA_TAG) 905 soup->so_mpls = readtag(su, s); 906 else 907 errx(EXIT_FAILURE, "MPLS can be used only as " 908 "DST or TAG"); 909 return 1; 910 #endif 911 912 case AF_LINK: 913 link_addr(s, &su->sdl); 914 return 1; 915 916 case AF_INET: 917 default: 918 break; 919 } 920 921 if (hpp == NULL) 922 hpp = &hp; 923 *hpp = NULL; 924 925 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 926 *t = '\0'; 927 if (forcenet == 0) { 928 if ((val = inet_addr(s)) != INADDR_NONE) { 929 inet_makenetandmask(htonl(val), &su->sin, soup); 930 return prefixlen(&t[1], soup); 931 } 932 } else { 933 if ((val = inet_network(s)) != INADDR_NONE) { 934 inet_makenetandmask(val, &su->sin, soup); 935 return prefixlen(&t[1], soup); 936 } 937 } 938 *t = '/'; 939 } 940 if (inet_aton(s, &su->sin.sin_addr) && 941 (which != RTA_DST || forcenet == 0)) { 942 val = su->sin.sin_addr.s_addr; 943 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 944 return 1; 945 else { 946 val = ntohl(val); 947 goto netdone; 948 } 949 } 950 if ((val = inet_network(s)) != INADDR_NONE || 951 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 952 netdone: 953 if (which == RTA_DST) 954 inet_makenetandmask(val, &su->sin, soup); 955 return 0; 956 } 957 hp = gethostbyname(s); 958 if (hp) { 959 *hpp = hp; 960 su->sin.sin_family = hp->h_addrtype; 961 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 962 return 1; 963 } 964 errx(EXIT_FAILURE, "%s: bad value", s); 965 /*NOTREACHED*/ 966 } 967 968 #ifndef SMALL 969 static sup 970 readtag(sup su, const char *s) 971 { 972 char *p, *n, *norig; 973 int mplssize = 0; 974 sup retsu = su; 975 976 n = strdup(s); 977 if (n == NULL) 978 errx(EXIT_FAILURE, "%s: Cannot allocate memory", s); 979 norig = n; 980 for (uint i = 0; i < strlen(n); i++) 981 if(n[i] == ',') 982 mplssize++; 983 984 #define MPLS_NEW_SIZE (sizeof(struct sockaddr_mpls) + \ 985 mplssize * sizeof(union mpls_shim)) 986 987 if (mplssize != 0 && sizeof(union sockunion) < MPLS_NEW_SIZE) { 988 free(su); 989 retsu = malloc(MPLS_NEW_SIZE); 990 retsu->smpls.smpls_family = AF_MPLS; 991 } 992 retsu->smpls.smpls_len = MPLS_NEW_SIZE; 993 mplssize = 0; 994 while ((p = strchr(n, ',')) != NULL) { 995 p[0] = '\0'; 996 addtag(retsu, n, mplssize); 997 n = p + 1; 998 mplssize++; 999 } 1000 addtag(retsu, n, mplssize); 1001 1002 free(norig); 1003 return retsu; 1004 } 1005 1006 static void 1007 addtag(sup su, const char *s, int where) 1008 { 1009 union mpls_shim *ms = &su->smpls.smpls_addr; 1010 1011 if (atoi(s) < 0 || atoi(s) >= (1 << 20)) 1012 errx(EXIT_FAILURE, "%s: Bad tag", s); 1013 ms[where].s_addr = 0; 1014 ms[where].shim.label = atoi(s); 1015 ms[where].s_addr = htonl(ms[where].s_addr); 1016 } 1017 #endif /* SMALL */ 1018 1019 int 1020 prefixlen(const char *s, struct sou *soup) 1021 { 1022 int max, len = atoi(s); 1023 #ifdef INET6 1024 int q, r; 1025 #endif 1026 1027 switch (af) { 1028 case AF_INET: 1029 max = sizeof(struct in_addr) * 8; 1030 break; 1031 #ifdef INET6 1032 case AF_INET6: 1033 max = sizeof(struct in6_addr) * 8; 1034 break; 1035 #endif 1036 default: 1037 errx(EXIT_FAILURE, "prefixlen is not supported with af %d", af); 1038 /*NOTREACHED*/ 1039 } 1040 1041 rtm_addrs |= RTA_NETMASK; 1042 if (len < -1 || len > max) 1043 errx(EXIT_FAILURE, "%s: bad value", s); 1044 1045 #ifdef INET6 1046 q = len >> 3; 1047 r = len & 7; 1048 #endif 1049 switch (af) { 1050 case AF_INET: 1051 memset(soup->so_mask, 0, sizeof(*soup->so_mask)); 1052 soup->so_mask->sin.sin_family = AF_INET; 1053 soup->so_mask->sin.sin_len = sizeof(struct sockaddr_in); 1054 soup->so_mask->sin.sin_addr.s_addr = (len == 0 ? 0 1055 : htonl(0xffffffff << (32 - len))); 1056 break; 1057 #ifdef INET6 1058 case AF_INET6: 1059 soup->so_mask->sin6.sin6_family = AF_INET6; 1060 soup->so_mask->sin6.sin6_len = sizeof(struct sockaddr_in6); 1061 memset(&soup->so_mask->sin6.sin6_addr, 0, 1062 sizeof(soup->so_mask->sin6.sin6_addr)); 1063 if (q > 0) 1064 memset(&soup->so_mask->sin6.sin6_addr, 0xff, q); 1065 if (r > 0) 1066 *((u_char *)&soup->so_mask->sin6.sin6_addr + q) = 1067 (0xff00 >> r) & 0xff; 1068 break; 1069 #endif 1070 } 1071 return len == max; 1072 } 1073 1074 #ifndef SMALL 1075 static void 1076 interfaces(void) 1077 { 1078 size_t needed; 1079 int mib[6]; 1080 char *buf, *lim, *next; 1081 struct rt_msghdr *rtm; 1082 1083 mib[0] = CTL_NET; 1084 mib[1] = PF_ROUTE; 1085 mib[2] = 0; /* protocol */ 1086 mib[3] = 0; /* wildcard address family */ 1087 mib[4] = NET_RT_IFLIST; 1088 mib[5] = 0; /* no flags */ 1089 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1090 err(EXIT_FAILURE, "route-sysctl-estimate"); 1091 if (needed) { 1092 if ((buf = malloc(needed)) == NULL) 1093 err(EXIT_FAILURE, "malloc"); 1094 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 1095 err(EXIT_FAILURE, 1096 "actual retrieval of interface table"); 1097 } 1098 lim = buf + needed; 1099 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1100 rtm = (struct rt_msghdr *)next; 1101 print_rtmsg(rtm, rtm->rtm_msglen); 1102 } 1103 free(buf); 1104 } 1105 } 1106 1107 static void 1108 monitor(void) 1109 { 1110 int n; 1111 union { 1112 char msg[2048]; 1113 struct rt_msghdr hdr; 1114 } u; 1115 1116 verbose = 1; 1117 if (debugonly) { 1118 interfaces(); 1119 exit(0); 1120 } 1121 for(;;) { 1122 time_t now; 1123 n = prog_read(sock, &u, sizeof(u)); 1124 now = time(NULL); 1125 (void)printf("got message of size %d on %s", n, ctime(&now)); 1126 print_rtmsg(&u.hdr, n); 1127 } 1128 } 1129 1130 #endif /* SMALL */ 1131 1132 1133 struct { 1134 struct rt_msghdr m_rtm; 1135 char m_space[512]; 1136 } m_rtmsg; 1137 1138 static int 1139 rtmsg(int cmd, int flags, struct sou *soup) 1140 { 1141 static int seq; 1142 int rlen; 1143 char *cp = m_rtmsg.m_space; 1144 int l; 1145 1146 #define NEXTADDR(w, u) \ 1147 if (rtm_addrs & (w)) {\ 1148 l = RT_ROUNDUP(u->sa.sa_len); memmove(cp, u, l); cp += l;\ 1149 if (verbose && ! shortoutput) sodump(u,#u);\ 1150 } 1151 1152 errno = 0; 1153 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1154 if (cmd == 'a') 1155 cmd = RTM_ADD; 1156 else if (cmd == 'c') 1157 cmd = RTM_CHANGE; 1158 else if (cmd == 'g') { 1159 #ifdef SMALL 1160 return -1; 1161 #else /* SMALL */ 1162 cmd = RTM_GET; 1163 if (soup->so_ifp->sa.sa_family == AF_UNSPEC) { 1164 soup->so_ifp->sa.sa_family = AF_LINK; 1165 soup->so_ifp->sa.sa_len = sizeof(struct sockaddr_dl); 1166 rtm_addrs |= RTA_IFP; 1167 } 1168 #endif /* SMALL */ 1169 } else 1170 cmd = RTM_DELETE; 1171 #define rtm m_rtmsg.m_rtm 1172 rtm.rtm_type = cmd; 1173 rtm.rtm_flags = flags; 1174 rtm.rtm_version = RTM_VERSION; 1175 rtm.rtm_seq = ++seq; 1176 rtm.rtm_addrs = rtm_addrs; 1177 rtm.rtm_rmx = rt_metrics; 1178 rtm.rtm_inits = rtm_inits; 1179 1180 if (rtm_addrs & RTA_NETMASK) 1181 mask_addr(soup); 1182 NEXTADDR(RTA_DST, soup->so_dst); 1183 NEXTADDR(RTA_GATEWAY, soup->so_gate); 1184 NEXTADDR(RTA_NETMASK, soup->so_mask); 1185 NEXTADDR(RTA_GENMASK, soup->so_genmask); 1186 NEXTADDR(RTA_IFP, soup->so_ifp); 1187 NEXTADDR(RTA_IFA, soup->so_ifa); 1188 #ifndef SMALL 1189 NEXTADDR(RTA_TAG, soup->so_mpls); 1190 #endif 1191 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1192 if (verbose && ! shortoutput) { 1193 if (rtm_addrs) 1194 putchar('\n'); 1195 print_rtmsg(&rtm, l); 1196 } 1197 if (debugonly) 1198 return 0; 1199 if ((rlen = prog_write(sock, (char *)&m_rtmsg, l)) < 0) { 1200 warnx("writing to routing socket: %s", route_strerror(errno)); 1201 return -1; 1202 } 1203 if (rlen < l) { 1204 warnx("write to routing socket, got %d for rlen", rlen); 1205 return 1; 1206 } 1207 #ifndef SMALL 1208 if (cmd == RTM_GET) { 1209 do { 1210 l = prog_read(sock, 1211 (char *)&m_rtmsg, sizeof(m_rtmsg)); 1212 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1213 if (l < 0) 1214 err(EXIT_FAILURE, "read from routing socket"); 1215 else 1216 return print_getmsg(&rtm, l, soup); 1217 } 1218 #endif /* SMALL */ 1219 #undef rtm 1220 return 0; 1221 } 1222 1223 static void 1224 mask_addr(struct sou *soup) 1225 { 1226 int olen = soup->so_mask->sa.sa_len; 1227 char *cp1 = olen + (char *)soup->so_mask, *cp2; 1228 1229 for (soup->so_mask->sa.sa_len = 0; cp1 > (char *)soup->so_mask; ) 1230 if (*--cp1 != 0) { 1231 soup->so_mask->sa.sa_len = 1 + cp1 - (char *)soup->so_mask; 1232 break; 1233 } 1234 if ((rtm_addrs & RTA_DST) == 0) 1235 return; 1236 switch (soup->so_dst->sa.sa_family) { 1237 case AF_INET: 1238 #ifdef INET6 1239 case AF_INET6: 1240 #endif 1241 #ifndef SMALL 1242 case AF_APPLETALK: 1243 #endif /* SMALL */ 1244 case 0: 1245 return; 1246 } 1247 cp1 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_dst; 1248 cp2 = soup->so_dst->sa.sa_len + 1 + (char *)soup->so_dst; 1249 while (cp2 > cp1) 1250 *--cp2 = 0; 1251 cp2 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_mask; 1252 while (cp1 > soup->so_dst->sa.sa_data) 1253 *--cp1 &= *--cp2; 1254 } 1255 1256 const char * const msgtypes[] = { 1257 [RTM_ADD] = "RTM_ADD: Add Route", 1258 [RTM_DELETE] = "RTM_DELETE: Delete Route", 1259 [RTM_CHANGE] = "RTM_CHANGE: Change Metrics, Flags or Gateway", 1260 [RTM_GET] = "RTM_GET: Report Metrics", 1261 [RTM_LOSING] = "RTM_LOSING: Kernel Suspects Partitioning", 1262 [RTM_REDIRECT] = "RTM_REDIRECT: Told to use different route", 1263 [RTM_MISS] = "RTM_MISS: Lookup failed on this address", 1264 [RTM_LOCK] = "RTM_LOCK: fix specified metrics", 1265 [RTM_OLDADD] = "RTM_OLDADD: caused by SIOCADDRT", 1266 [RTM_OLDDEL] = "RTM_OLDDEL: caused by SIOCDELRT", 1267 [RTM_NEWADDR] = "RTM_NEWADDR: address being added to iface", 1268 [RTM_DELADDR] = "RTM_DELADDR: address being removed from iface", 1269 [RTM_OOIFINFO] = "RTM_OOIFINFO: iface status change (pre-1.5)", 1270 [RTM_OIFINFO] = "RTM_OIFINFO: iface status change (pre-64bit time)", 1271 [RTM_IFANNOUNCE] = "RTM_IFANNOUNCE: iface arrival/departure", 1272 [RTM_IEEE80211] = "RTM_IEEE80211: IEEE80211 wireless event", 1273 [RTM_IFINFO] = "RTM_IFINFO: iface status change", 1274 [RTM_CHGADDR] = "RTM_CHGADDR: address being changed on iface", 1275 }; 1276 1277 const char metricnames[] = 1278 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1279 const char routeflags[] = 1280 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CONNECTED\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1\023LOCAL\024BROADCAST"; 1281 const char ifnetflags[] = 1282 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1283 const char addrnames[] = 1284 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD\011TAG"; 1285 1286 1287 #ifndef SMALL 1288 static const char * 1289 linkstate(struct if_msghdr *ifm) 1290 { 1291 static char buf[64]; 1292 1293 switch (ifm->ifm_data.ifi_link_state) { 1294 case LINK_STATE_UNKNOWN: 1295 return "carrier: unknown"; 1296 case LINK_STATE_DOWN: 1297 return "carrier: no carrier"; 1298 case LINK_STATE_UP: 1299 return "carrier: active"; 1300 default: 1301 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1302 ifm->ifm_data.ifi_link_state); 1303 return buf; 1304 } 1305 } 1306 #endif /* SMALL */ 1307 1308 static void 1309 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1310 { 1311 struct if_msghdr *ifm; 1312 struct ifa_msghdr *ifam; 1313 struct if_announcemsghdr *ifan; 1314 union { 1315 struct ieee80211_join_event join; 1316 struct ieee80211_leave_event leave; 1317 struct ieee80211_replay_event replay; 1318 struct ieee80211_michael_event michael; 1319 } ev; 1320 size_t evlen = 0; 1321 1322 if (verbose == 0) 1323 return; 1324 if (rtm->rtm_version != RTM_VERSION) { 1325 (void)printf("routing message version %d not understood\n", 1326 rtm->rtm_version); 1327 return; 1328 } 1329 if (msgtypes[rtm->rtm_type]) 1330 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1331 else 1332 (void)printf("#%d: ", rtm->rtm_type); 1333 (void)printf("len %d, ", rtm->rtm_msglen); 1334 switch (rtm->rtm_type) { 1335 case RTM_IFINFO: 1336 ifm = (struct if_msghdr *)rtm; 1337 (void)printf("if# %d, %s, flags: ", ifm->ifm_index, 1338 #ifdef SMALL 1339 "" 1340 #else 1341 linkstate(ifm) 1342 #endif /* SMALL */ 1343 ); 1344 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1345 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1346 break; 1347 case RTM_NEWADDR: 1348 case RTM_DELADDR: 1349 case RTM_CHGADDR: 1350 ifam = (struct ifa_msghdr *)rtm; 1351 (void)printf("metric %d, flags: ", ifam->ifam_metric); 1352 bprintf(stdout, ifam->ifam_flags, routeflags); 1353 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1354 break; 1355 case RTM_IEEE80211: 1356 ifan = (struct if_announcemsghdr *)rtm; 1357 (void)printf("if# %d, what: ", ifan->ifan_index); 1358 switch (ifan->ifan_what) { 1359 case RTM_IEEE80211_ASSOC: 1360 printf("associate"); 1361 break; 1362 case RTM_IEEE80211_REASSOC: 1363 printf("re-associate"); 1364 break; 1365 case RTM_IEEE80211_DISASSOC: 1366 printf("disassociate"); 1367 break; 1368 case RTM_IEEE80211_SCAN: 1369 printf("scan complete"); 1370 break; 1371 case RTM_IEEE80211_JOIN: 1372 evlen = sizeof(ev.join); 1373 printf("join"); 1374 break; 1375 case RTM_IEEE80211_LEAVE: 1376 evlen = sizeof(ev.leave); 1377 printf("leave"); 1378 break; 1379 case RTM_IEEE80211_MICHAEL: 1380 evlen = sizeof(ev.michael); 1381 printf("michael"); 1382 break; 1383 case RTM_IEEE80211_REPLAY: 1384 evlen = sizeof(ev.replay); 1385 printf("replay"); 1386 break; 1387 default: 1388 evlen = 0; 1389 printf("#%d", ifan->ifan_what); 1390 break; 1391 } 1392 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1393 printf(" (truncated)\n"); 1394 break; 1395 } 1396 (void)memcpy(&ev, (ifan + 1), evlen); 1397 switch (ifan->ifan_what) { 1398 case RTM_IEEE80211_JOIN: 1399 case RTM_IEEE80211_LEAVE: 1400 printf(" mac %" PRIETHER, 1401 PRIETHER_ARGS(ev.join.iev_addr)); 1402 break; 1403 case RTM_IEEE80211_REPLAY: 1404 case RTM_IEEE80211_MICHAEL: 1405 printf(" src %" PRIETHER " dst %" PRIETHER 1406 " cipher %" PRIu8 " keyix %" PRIu8, 1407 PRIETHER_ARGS(ev.replay.iev_src), 1408 PRIETHER_ARGS(ev.replay.iev_dst), 1409 ev.replay.iev_cipher, 1410 ev.replay.iev_keyix); 1411 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1412 printf(" key rsc %#" PRIx64 1413 " frame rsc %#" PRIx64, 1414 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1415 } 1416 break; 1417 default: 1418 break; 1419 } 1420 printf("\n"); 1421 break; 1422 case RTM_IFANNOUNCE: 1423 ifan = (struct if_announcemsghdr *)rtm; 1424 (void)printf("if# %d, what: ", ifan->ifan_index); 1425 switch (ifan->ifan_what) { 1426 case IFAN_ARRIVAL: 1427 printf("arrival"); 1428 break; 1429 case IFAN_DEPARTURE: 1430 printf("departure"); 1431 break; 1432 default: 1433 printf("#%d", ifan->ifan_what); 1434 break; 1435 } 1436 printf("\n"); 1437 break; 1438 default: 1439 (void)printf("pid %d, seq %d, errno %d, flags: ", 1440 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1441 bprintf(stdout, rtm->rtm_flags, routeflags); 1442 pmsg_common(rtm); 1443 } 1444 } 1445 1446 #ifndef SMALL 1447 static int 1448 print_getmsg(struct rt_msghdr *rtm, int msglen, struct sou *soup) 1449 { 1450 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL, *mpls = NULL; 1451 struct sockaddr_dl *ifp = NULL; 1452 struct sockaddr *sa; 1453 char *cp; 1454 int i; 1455 1456 if (! shortoutput) { 1457 (void)printf(" route to: %s\n", 1458 routename(&soup->so_dst->sa, nflag)); 1459 } 1460 if (rtm->rtm_version != RTM_VERSION) { 1461 warnx("routing message version %d not understood", 1462 rtm->rtm_version); 1463 return 1; 1464 } 1465 if (rtm->rtm_msglen > msglen) { 1466 warnx("message length mismatch, in packet %d, returned %d", 1467 rtm->rtm_msglen, msglen); 1468 } 1469 if (rtm->rtm_errno) { 1470 warnx("RTM_GET: %s (errno %d)", 1471 strerror(rtm->rtm_errno), rtm->rtm_errno); 1472 return 1; 1473 } 1474 cp = ((char *)(rtm + 1)); 1475 if (rtm->rtm_addrs) 1476 for (i = 1; i; i <<= 1) 1477 if (i & rtm->rtm_addrs) { 1478 sa = (struct sockaddr *)cp; 1479 switch (i) { 1480 case RTA_DST: 1481 dst = sa; 1482 break; 1483 case RTA_GATEWAY: 1484 gate = sa; 1485 break; 1486 case RTA_NETMASK: 1487 mask = sa; 1488 break; 1489 case RTA_IFP: 1490 if (sa->sa_family == AF_LINK && 1491 ((struct sockaddr_dl *)sa)->sdl_nlen) 1492 ifp = (struct sockaddr_dl *)sa; 1493 break; 1494 case RTA_IFA: 1495 ifa = sa; 1496 break; 1497 case RTA_TAG: 1498 mpls = sa; 1499 break; 1500 } 1501 RT_ADVANCE(cp, sa); 1502 } 1503 if (dst && mask) 1504 mask->sa_family = dst->sa_family; /* XXX */ 1505 if (dst && ! shortoutput) 1506 (void)printf("destination: %s\n", 1507 routename(dst, nflag)); 1508 if (mask && ! shortoutput) { 1509 int savenflag = nflag; 1510 1511 nflag = RT_NFLAG; 1512 (void)printf(" mask: %s\n", 1513 routename(mask, nflag)); 1514 nflag = savenflag; 1515 } 1516 if (gate && rtm->rtm_flags & RTF_GATEWAY) { 1517 const char *name; 1518 1519 name = routename(gate, nflag); 1520 if (shortoutput) { 1521 if (*name == '\0') 1522 return 1; 1523 (void)printf("%s\n", name); 1524 } else 1525 (void)printf(" gateway: %s\n", name); 1526 } 1527 if (mpls) { 1528 const char *name; 1529 name = routename(mpls, nflag); 1530 if(shortoutput) { 1531 if (*name == '\0') 1532 return 1; 1533 printf("%s\n", name); 1534 } else 1535 printf(" Tag: %s\n", name); 1536 } 1537 1538 if (ifa && ! shortoutput) 1539 (void)printf(" local addr: %s\n", 1540 routename(ifa, nflag)); 1541 if (ifp && ! shortoutput) 1542 (void)printf(" interface: %.*s\n", 1543 ifp->sdl_nlen, ifp->sdl_data); 1544 if (! shortoutput) { 1545 (void)printf(" flags: "); 1546 bprintf(stdout, rtm->rtm_flags, routeflags); 1547 } 1548 1549 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1550 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1551 1552 if (! shortoutput) { 1553 (void)printf("\n%s\n", "\ 1554 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1555 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1556 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1557 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1558 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1559 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1560 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1561 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1562 if (rtm->rtm_rmx.rmx_expire) 1563 rtm->rtm_rmx.rmx_expire -= time(0); 1564 printf("%8"PRId64"%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1565 } 1566 #undef lock 1567 #undef msec 1568 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1569 1570 if (shortoutput) 1571 return (rtm->rtm_addrs & RTF_GATEWAY) == 0; 1572 else if (verbose) 1573 pmsg_common(rtm); 1574 else if (rtm->rtm_addrs &~ RTA_IGN) { 1575 (void)printf("sockaddrs: "); 1576 bprintf(stdout, rtm->rtm_addrs, addrnames); 1577 putchar('\n'); 1578 } 1579 return 0; 1580 #undef RTA_IGN 1581 } 1582 #endif /* SMALL */ 1583 1584 void 1585 pmsg_common(struct rt_msghdr *rtm) 1586 { 1587 (void)printf("\nlocks: "); 1588 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1589 (void)printf(" inits: "); 1590 bprintf(stdout, rtm->rtm_inits, metricnames); 1591 pmsg_addrs((char *)(rtm + 1), rtm->rtm_addrs); 1592 } 1593 1594 static void 1595 extract_addrs(const char *cp, int addrs, const struct sockaddr *sa[], int *nmfp) 1596 { 1597 int i, nmf = -1; 1598 1599 for (i = 0; i < RTAX_MAX; i++) { 1600 if ((1 << i) & addrs) { 1601 sa[i] = (const struct sockaddr *)cp; 1602 if ((i == RTAX_DST || i == RTAX_IFA) && 1603 nmf == -1) 1604 nmf = sa[i]->sa_family; 1605 RT_ADVANCE(cp, sa[i]); 1606 } else 1607 sa[i] = NULL; 1608 } 1609 1610 if (nmfp != NULL) 1611 *nmfp = nmf; 1612 } 1613 1614 static void 1615 pmsg_addrs(const char *cp, int addrs) 1616 { 1617 const struct sockaddr *sa[RTAX_MAX]; 1618 int i, nmf; 1619 1620 if (addrs != 0) { 1621 (void)printf("\nsockaddrs: "); 1622 bprintf(stdout, addrs, addrnames); 1623 (void)putchar('\n'); 1624 extract_addrs(cp, addrs, sa, &nmf); 1625 for (i = 0; i < RTAX_MAX; i++) { 1626 if (sa[i] == NULL) 1627 continue; 1628 1629 if (i == RTAX_NETMASK && sa[i]->sa_len) 1630 (void)printf(" %s", 1631 netmask_string(sa[i], -1, nmf)); 1632 else 1633 (void)printf(" %s", 1634 routename(sa[i], nflag)); 1635 } 1636 } 1637 (void)putchar('\n'); 1638 (void)fflush(stdout); 1639 } 1640 1641 static void 1642 bprintf(FILE *fp, int b, const char *f) 1643 { 1644 int i; 1645 int gotsome = 0; 1646 const uint8_t *s = (const uint8_t *)f; 1647 1648 if (b == 0) { 1649 fputs("none", fp); 1650 return; 1651 } 1652 while ((i = *s++) != 0) { 1653 if (b & (1 << (i-1))) { 1654 if (gotsome == 0) 1655 i = '<'; 1656 else 1657 i = ','; 1658 (void)putc(i, fp); 1659 gotsome = 1; 1660 for (; (i = *s) > 32; s++) 1661 (void)putc(i, fp); 1662 } else 1663 while (*s > 32) 1664 s++; 1665 } 1666 if (gotsome) 1667 (void)putc('>', fp); 1668 } 1669 1670 int 1671 keyword(const char *cp) 1672 { 1673 struct keytab *kt = keywords; 1674 1675 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1676 kt++; 1677 return kt->kt_i; 1678 } 1679 1680 static void 1681 sodump(sup su, const char *which) 1682 { 1683 #ifdef INET6 1684 char ntop_buf[NI_MAXHOST]; 1685 #endif 1686 1687 switch (su->sa.sa_family) { 1688 case AF_INET: 1689 (void)printf("%s: inet %s; ", 1690 which, inet_ntoa(su->sin.sin_addr)); 1691 break; 1692 #ifndef SMALL 1693 case AF_APPLETALK: 1694 (void)printf("%s: atalk %d.%d; ", 1695 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1696 break; 1697 #endif 1698 case AF_LINK: 1699 (void)printf("%s: link %s; ", 1700 which, link_ntoa(&su->sdl)); 1701 break; 1702 #ifdef INET6 1703 case AF_INET6: 1704 (void)printf("%s: inet6 %s; ", 1705 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 1706 ntop_buf, sizeof(ntop_buf))); 1707 break; 1708 #endif 1709 #ifndef SMALL 1710 case AF_MPLS: 1711 { 1712 union mpls_shim ms; 1713 const union mpls_shim *pms; 1714 int psize = sizeof(struct sockaddr_mpls); 1715 1716 ms.s_addr = ntohl(su->smpls.smpls_addr.s_addr); 1717 printf("%s: mpls %u; ", 1718 which, ms.shim.label); 1719 1720 pms = &su->smpls.smpls_addr; 1721 while(psize < su->smpls.smpls_len) { 1722 pms++; 1723 ms.s_addr = ntohl(pms->s_addr); 1724 printf("%u; ", ms.shim.label); 1725 psize += sizeof(ms); 1726 } 1727 break; 1728 } 1729 #endif /* SMALL */ 1730 default: 1731 (void)printf("%s: (%d) %s; ", 1732 which, su->sa.sa_family, any_ntoa(&su->sa)); 1733 } 1734 (void)fflush(stdout); 1735 } 1736 1737 /* States*/ 1738 #define VIRGIN 0 1739 #define GOTONE 1 1740 #define GOTTWO 2 1741 /* Inputs */ 1742 #define DIGIT (4*0) 1743 #define END (4*1) 1744 #define DELIM (4*2) 1745 1746 static void 1747 sockaddr(const char *addr, struct sockaddr *sa) 1748 { 1749 char *cp = (char *)sa; 1750 int size = sa->sa_len; 1751 char *cplim = cp + size; 1752 int byte = 0, state = VIRGIN, new = 0; 1753 1754 (void)memset(cp, 0, size); 1755 cp++; 1756 do { 1757 if ((*addr >= '0') && (*addr <= '9')) { 1758 new = *addr - '0'; 1759 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1760 new = *addr - 'a' + 10; 1761 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1762 new = *addr - 'A' + 10; 1763 } else if (*addr == 0) 1764 state |= END; 1765 else 1766 state |= DELIM; 1767 addr++; 1768 switch (state /* | INPUT */) { 1769 case GOTTWO | DIGIT: 1770 *cp++ = byte; /*FALLTHROUGH*/ 1771 case VIRGIN | DIGIT: 1772 state = GOTONE; byte = new; continue; 1773 case GOTONE | DIGIT: 1774 state = GOTTWO; byte = new + (byte << 4); continue; 1775 default: /* | DELIM */ 1776 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1777 case GOTONE | END: 1778 case GOTTWO | END: 1779 *cp++ = byte; /* FALLTHROUGH */ 1780 case VIRGIN | END: 1781 break; 1782 } 1783 break; 1784 } while (cp < cplim); 1785 sa->sa_len = cp - (char *)sa; 1786 } 1787