1 /* 2 * Copyright (c) 1983, 1989, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 static const char copyright[] = 32 "@(#) Copyright (c) 1983, 1989, 1991, 1993\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34 #endif /* not lint */ 35 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)route.c 8.6 (Berkeley) 4/28/95"; 39 #endif 40 static const char rcsid[] = 41 "$FreeBSD$"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/file.h> 46 #include <sys/socket.h> 47 #include <sys/ioctl.h> 48 #include <sys/sysctl.h> 49 #include <sys/types.h> 50 51 #include <net/if.h> 52 #include <net/route.h> 53 #include <net/if_dl.h> 54 #include <netinet/in.h> 55 #include <netinet/if_ether.h> 56 #include <netatalk/at.h> 57 #include <arpa/inet.h> 58 #include <netdb.h> 59 60 #include <ctype.h> 61 #include <err.h> 62 #include <errno.h> 63 #include <paths.h> 64 #include <stdio.h> 65 #include <stdlib.h> 66 #include <string.h> 67 #include <sysexits.h> 68 #include <unistd.h> 69 #include <ifaddrs.h> 70 71 struct keytab { 72 char *kt_cp; 73 int kt_i; 74 } keywords[] = { 75 #include "keywords.h" 76 {0, 0} 77 }; 78 79 struct ortentry route; 80 union sockunion { 81 struct sockaddr sa; 82 struct sockaddr_in sin; 83 #ifdef INET6 84 struct sockaddr_in6 sin6; 85 #endif 86 struct sockaddr_at sat; 87 struct sockaddr_dl sdl; 88 struct sockaddr_inarp sinarp; 89 struct sockaddr_storage ss; /* added to avoid memory overrun */ 90 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 91 92 typedef union sockunion *sup; 93 int pid, rtm_addrs; 94 int s; 95 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 96 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 97 int locking, lockrest, debugonly; 98 struct rt_metrics rt_metrics; 99 u_long rtm_inits; 100 uid_t uid; 101 int atalk_aton(const char *, struct at_addr *); 102 char *atalk_ntoa(struct at_addr); 103 const char *routename(), *netname(); 104 void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 105 void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 106 #ifdef INET6 107 static int inet6_makenetandmask(struct sockaddr_in6 *, char *); 108 #endif 109 int getaddr(), rtmsg(), x25_makemask(); 110 int prefixlen(); 111 extern char *iso_ntoa(); 112 113 void usage(const char *) __dead2; 114 115 void 116 usage(cp) 117 const char *cp; 118 { 119 if (cp) 120 warnx("bad keyword: %s", cp); 121 (void) fprintf(stderr, 122 "usage: route [-dnqtv] command [[modifiers] args]\n"); 123 exit(EX_USAGE); 124 /* NOTREACHED */ 125 } 126 127 int 128 main(argc, argv) 129 int argc; 130 char **argv; 131 { 132 int ch; 133 134 if (argc < 2) 135 usage((char *)NULL); 136 137 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 138 switch(ch) { 139 case 'n': 140 nflag = 1; 141 break; 142 case 'q': 143 qflag = 1; 144 break; 145 case 'v': 146 verbose = 1; 147 break; 148 case 't': 149 tflag = 1; 150 break; 151 case 'd': 152 debugonly = 1; 153 break; 154 case '?': 155 default: 156 usage((char *)NULL); 157 } 158 argc -= optind; 159 argv += optind; 160 161 pid = getpid(); 162 uid = geteuid(); 163 if (tflag) 164 s = open(_PATH_DEVNULL, O_WRONLY, 0); 165 else 166 s = socket(PF_ROUTE, SOCK_RAW, 0); 167 if (s < 0) 168 err(EX_OSERR, "socket"); 169 if (*argv) 170 switch (keyword(*argv)) { 171 case K_GET: 172 uid = 0; 173 /* FALLTHROUGH */ 174 175 case K_CHANGE: 176 case K_ADD: 177 case K_DELETE: 178 newroute(argc, argv); 179 /* NOTREACHED */ 180 181 case K_MONITOR: 182 monitor(); 183 /* NOTREACHED */ 184 185 case K_FLUSH: 186 flushroutes(argc, argv); 187 exit(0); 188 /* NOTREACHED */ 189 } 190 usage(*argv); 191 /* NOTREACHED */ 192 } 193 194 /* 195 * Purge all entries in the routing tables not 196 * associated with network interfaces. 197 */ 198 void 199 flushroutes(argc, argv) 200 int argc; 201 char *argv[]; 202 { 203 size_t needed; 204 int mib[6], rlen, seqno, count = 0; 205 char *buf, *next, *lim; 206 struct rt_msghdr *rtm; 207 208 if (uid && !debugonly) { 209 errx(EX_NOPERM, "must be root to alter routing table"); 210 } 211 shutdown(s, 0); /* Don't want to read back our messages */ 212 if (argc > 1) { 213 argv++; 214 if (argc == 2 && **argv == '-') 215 switch (keyword(*argv + 1)) { 216 case K_INET: 217 af = AF_INET; 218 break; 219 #ifdef INET6 220 case K_INET6: 221 af = AF_INET6; 222 break; 223 #endif 224 case K_ATALK: 225 af = AF_APPLETALK; 226 break; 227 case K_LINK: 228 af = AF_LINK; 229 break; 230 default: 231 goto bad; 232 } else 233 bad: usage(*argv); 234 } 235 retry: 236 mib[0] = CTL_NET; 237 mib[1] = PF_ROUTE; 238 mib[2] = 0; /* protocol */ 239 mib[3] = 0; /* wildcard address family */ 240 mib[4] = NET_RT_DUMP; 241 mib[5] = 0; /* no flags */ 242 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 243 err(EX_OSERR, "route-sysctl-estimate"); 244 if ((buf = malloc(needed)) == NULL) 245 errx(EX_OSERR, "malloc failed"); 246 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 247 if (errno == ENOMEM && count++ < 10) { 248 warnx("Routing table grew, retrying"); 249 sleep(1); 250 free(buf); 251 goto retry; 252 } 253 err(EX_OSERR, "route-sysctl-get"); 254 } 255 lim = buf + needed; 256 if (verbose) 257 (void) printf("Examining routing table from sysctl\n"); 258 seqno = 0; /* ??? */ 259 for (next = buf; next < lim; next += rtm->rtm_msglen) { 260 rtm = (struct rt_msghdr *)next; 261 if (verbose) 262 print_rtmsg(rtm, rtm->rtm_msglen); 263 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 264 continue; 265 if (af) { 266 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 267 268 if (sa->sa_family != af) 269 continue; 270 } 271 if (debugonly) 272 continue; 273 rtm->rtm_type = RTM_DELETE; 274 rtm->rtm_seq = seqno; 275 rlen = write(s, next, rtm->rtm_msglen); 276 if (rlen < 0 && errno == EPERM) 277 err(1, "write to routing socket"); 278 if (rlen < (int)rtm->rtm_msglen) { 279 warn("write to routing socket"); 280 (void) printf("got only %d for rlen\n", rlen); 281 free(buf); 282 goto retry; 283 break; 284 } 285 seqno++; 286 if (qflag) 287 continue; 288 if (verbose) 289 print_rtmsg(rtm, rlen); 290 else { 291 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 292 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 293 routename(sa) : netname(sa)); 294 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa); 295 (void) printf("%-20.20s ", routename(sa)); 296 (void) printf("done\n"); 297 } 298 } 299 } 300 301 const char * 302 routename(sa) 303 struct sockaddr *sa; 304 { 305 char *cp; 306 static char line[MAXHOSTNAMELEN + 1]; 307 struct hostent *hp; 308 static char domain[MAXHOSTNAMELEN + 1]; 309 static int first = 1, n; 310 311 if (first) { 312 first = 0; 313 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 314 (cp = strchr(domain, '.'))) { 315 domain[MAXHOSTNAMELEN] = '\0'; 316 (void) strcpy(domain, cp + 1); 317 } else 318 domain[0] = 0; 319 } 320 321 if (sa->sa_len == 0) 322 strcpy(line, "default"); 323 else switch (sa->sa_family) { 324 325 case AF_INET: 326 { struct in_addr in; 327 in = ((struct sockaddr_in *)sa)->sin_addr; 328 329 cp = 0; 330 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 331 cp = "default"; 332 if (cp == 0 && !nflag) { 333 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 334 AF_INET); 335 if (hp) { 336 if ((cp = strchr(hp->h_name, '.')) && 337 !strcmp(cp + 1, domain)) 338 *cp = 0; 339 cp = hp->h_name; 340 } 341 } 342 if (cp) { 343 strncpy(line, cp, sizeof(line) - 1); 344 line[sizeof(line) - 1] = '\0'; 345 } else 346 (void) sprintf(line, "%s", inet_ntoa(in)); 347 break; 348 } 349 350 #ifdef INET6 351 case AF_INET6: 352 { 353 struct sockaddr_in6 sin6; /* use static var for safety */ 354 int niflags = 0; 355 #ifdef NI_WITHSCOPEID 356 niflags = NI_WITHSCOPEID; 357 #endif 358 359 memset(&sin6, 0, sizeof(sin6)); 360 memcpy(&sin6, sa, sa->sa_len); 361 sin6.sin6_len = sizeof(struct sockaddr_in6); 362 sin6.sin6_family = AF_INET6; 363 #ifdef __KAME__ 364 if (sa->sa_len == sizeof(struct sockaddr_in6) && 365 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 366 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 367 sin6.sin6_scope_id == 0) { 368 sin6.sin6_scope_id = 369 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 370 sin6.sin6_addr.s6_addr[2] = 0; 371 sin6.sin6_addr.s6_addr[3] = 0; 372 } 373 #endif 374 if (nflag) 375 niflags |= NI_NUMERICHOST; 376 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 377 line, sizeof(line), NULL, 0, niflags) != 0) 378 strncpy(line, "invalid", sizeof(line)); 379 380 return(line); 381 } 382 #endif 383 384 case AF_APPLETALK: 385 (void) snprintf(line, sizeof(line), "atalk %s", 386 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 387 break; 388 389 case AF_LINK: 390 return (link_ntoa((struct sockaddr_dl *)sa)); 391 392 default: 393 { u_short *s = (u_short *)sa; 394 u_short *slim = s + ((sa->sa_len + 1) >> 1); 395 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 396 char *cpe = line + sizeof(line); 397 398 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 399 if ((n = snprintf(cp, cpe - cp, " %x", *s)) > 0) 400 cp += n; 401 else 402 *cp = '\0'; 403 break; 404 } 405 } 406 return (line); 407 } 408 409 /* 410 * Return the name of the network whose address is given. 411 * The address is assumed to be that of a net or subnet, not a host. 412 */ 413 const char * 414 netname(sa) 415 struct sockaddr *sa; 416 { 417 char *cp = 0; 418 static char line[MAXHOSTNAMELEN + 1]; 419 struct netent *np = 0; 420 u_long net, mask; 421 u_long i; 422 int n, subnetshift; 423 424 switch (sa->sa_family) { 425 426 case AF_INET: 427 { struct in_addr in; 428 in = ((struct sockaddr_in *)sa)->sin_addr; 429 430 i = in.s_addr = ntohl(in.s_addr); 431 if (in.s_addr == 0) 432 cp = "default"; 433 else if (!nflag) { 434 if (IN_CLASSA(i)) { 435 mask = IN_CLASSA_NET; 436 subnetshift = 8; 437 } else if (IN_CLASSB(i)) { 438 mask = IN_CLASSB_NET; 439 subnetshift = 8; 440 } else { 441 mask = IN_CLASSC_NET; 442 subnetshift = 4; 443 } 444 /* 445 * If there are more bits than the standard mask 446 * would suggest, subnets must be in use. 447 * Guess at the subnet mask, assuming reasonable 448 * width subnet fields. 449 */ 450 while (in.s_addr &~ mask) 451 mask = (long)mask >> subnetshift; 452 net = in.s_addr & mask; 453 while ((mask & 1) == 0) 454 mask >>= 1, net >>= 1; 455 np = getnetbyaddr(net, AF_INET); 456 if (np) 457 cp = np->n_name; 458 } 459 #define C(x) (unsigned)((x) & 0xff) 460 if (cp) 461 strncpy(line, cp, sizeof(line)); 462 else if ((in.s_addr & 0xffffff) == 0) 463 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 464 else if ((in.s_addr & 0xffff) == 0) 465 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 466 C(in.s_addr >> 16)); 467 else if ((in.s_addr & 0xff) == 0) 468 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 469 C(in.s_addr >> 16), C(in.s_addr >> 8)); 470 else 471 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 472 C(in.s_addr >> 16), C(in.s_addr >> 8), 473 C(in.s_addr)); 474 #undef C 475 break; 476 } 477 478 #ifdef INET6 479 case AF_INET6: 480 { 481 struct sockaddr_in6 sin6; /* use static var for safety */ 482 int niflags = 0; 483 #ifdef NI_WITHSCOPEID 484 niflags = NI_WITHSCOPEID; 485 #endif 486 487 memset(&sin6, 0, sizeof(sin6)); 488 memcpy(&sin6, sa, sa->sa_len); 489 sin6.sin6_len = sizeof(struct sockaddr_in6); 490 sin6.sin6_family = AF_INET6; 491 #ifdef __KAME__ 492 if (sa->sa_len == sizeof(struct sockaddr_in6) && 493 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 494 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 495 sin6.sin6_scope_id == 0) { 496 sin6.sin6_scope_id = 497 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 498 sin6.sin6_addr.s6_addr[2] = 0; 499 sin6.sin6_addr.s6_addr[3] = 0; 500 } 501 #endif 502 if (nflag) 503 niflags |= NI_NUMERICHOST; 504 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 505 line, sizeof(line), NULL, 0, niflags) != 0) 506 strncpy(line, "invalid", sizeof(line)); 507 508 return(line); 509 } 510 #endif 511 512 case AF_APPLETALK: 513 (void) snprintf(line, sizeof(line), "atalk %s", 514 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 515 break; 516 517 case AF_LINK: 518 return (link_ntoa((struct sockaddr_dl *)sa)); 519 520 521 default: 522 { u_short *s = (u_short *)sa->sa_data; 523 u_short *slim = s + ((sa->sa_len + 1)>>1); 524 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 525 char *cpe = line + sizeof(line); 526 527 while (s < slim && cp < cpe) 528 if ((n = snprintf(cp, cpe - cp, " %x", *s++)) > 0) 529 cp += n; 530 else 531 *cp = '\0'; 532 break; 533 } 534 } 535 return (line); 536 } 537 538 void 539 set_metric(value, key) 540 char *value; 541 int key; 542 { 543 int flag = 0; 544 u_long noval, *valp = &noval; 545 546 switch (key) { 547 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 548 caseof(K_MTU, RTV_MTU, rmx_mtu); 549 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 550 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 551 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 552 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 553 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 554 caseof(K_RTT, RTV_RTT, rmx_rtt); 555 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 556 } 557 rtm_inits |= flag; 558 if (lockrest || locking) 559 rt_metrics.rmx_locks |= flag; 560 if (locking) 561 locking = 0; 562 *valp = atoi(value); 563 } 564 565 void 566 newroute(argc, argv) 567 int argc; 568 char **argv; 569 { 570 char *cmd, *dest = "", *gateway = "", *err; 571 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC; 572 int key; 573 struct hostent *hp = 0; 574 575 if (uid) { 576 errx(EX_NOPERM, "must be root to alter routing table"); 577 } 578 cmd = argv[0]; 579 if (*cmd != 'g') 580 shutdown(s, 0); /* Don't want to read back our messages */ 581 while (--argc > 0) { 582 if (**(++argv)== '-') { 583 switch (key = keyword(1 + *argv)) { 584 case K_LINK: 585 af = AF_LINK; 586 aflen = sizeof(struct sockaddr_dl); 587 break; 588 case K_INET: 589 af = AF_INET; 590 aflen = sizeof(struct sockaddr_in); 591 break; 592 #ifdef INET6 593 case K_INET6: 594 af = AF_INET6; 595 aflen = sizeof(struct sockaddr_in6); 596 break; 597 #endif 598 case K_ATALK: 599 af = AF_APPLETALK; 600 aflen = sizeof(struct sockaddr_at); 601 break; 602 case K_SA: 603 af = PF_ROUTE; 604 aflen = sizeof(union sockunion); 605 break; 606 case K_IFACE: 607 case K_INTERFACE: 608 iflag++; 609 break; 610 case K_NOSTATIC: 611 flags &= ~RTF_STATIC; 612 break; 613 case K_LLINFO: 614 flags |= RTF_LLINFO; 615 break; 616 case K_LOCK: 617 locking = 1; 618 break; 619 case K_LOCKREST: 620 lockrest = 1; 621 break; 622 case K_HOST: 623 forcehost++; 624 break; 625 case K_REJECT: 626 flags |= RTF_REJECT; 627 break; 628 case K_BLACKHOLE: 629 flags |= RTF_BLACKHOLE; 630 break; 631 case K_PROTO1: 632 flags |= RTF_PROTO1; 633 break; 634 case K_PROTO2: 635 flags |= RTF_PROTO2; 636 break; 637 case K_PROXY: 638 proxy = 1; 639 break; 640 case K_CLONING: 641 flags |= RTF_CLONING; 642 break; 643 case K_XRESOLVE: 644 flags |= RTF_XRESOLVE; 645 break; 646 case K_STATIC: 647 flags |= RTF_STATIC; 648 break; 649 case K_IFA: 650 if (!--argc) 651 usage((char *)NULL); 652 (void) getaddr(RTA_IFA, *++argv, 0); 653 break; 654 case K_IFP: 655 if (!--argc) 656 usage((char *)NULL); 657 (void) getaddr(RTA_IFP, *++argv, 0); 658 break; 659 case K_GENMASK: 660 if (!--argc) 661 usage((char *)NULL); 662 (void) getaddr(RTA_GENMASK, *++argv, 0); 663 break; 664 case K_GATEWAY: 665 if (!--argc) 666 usage((char *)NULL); 667 (void) getaddr(RTA_GATEWAY, *++argv, 0); 668 break; 669 case K_DST: 670 if (!--argc) 671 usage((char *)NULL); 672 ishost = getaddr(RTA_DST, *++argv, &hp); 673 dest = *argv; 674 break; 675 case K_NETMASK: 676 if (!--argc) 677 usage((char *)NULL); 678 (void) getaddr(RTA_NETMASK, *++argv, 0); 679 /* FALLTHROUGH */ 680 case K_NET: 681 forcenet++; 682 break; 683 case K_PREFIXLEN: 684 if (!--argc) 685 usage((char *)NULL); 686 if (prefixlen(*++argv) == -1) { 687 forcenet = 0; 688 ishost = 1; 689 } else { 690 forcenet = 1; 691 ishost = 0; 692 } 693 break; 694 case K_MTU: 695 case K_HOPCOUNT: 696 case K_EXPIRE: 697 case K_RECVPIPE: 698 case K_SENDPIPE: 699 case K_SSTHRESH: 700 case K_RTT: 701 case K_RTTVAR: 702 if (!--argc) 703 usage((char *)NULL); 704 set_metric(*++argv, key); 705 break; 706 default: 707 usage(1+*argv); 708 } 709 } else { 710 if ((rtm_addrs & RTA_DST) == 0) { 711 dest = *argv; 712 ishost = getaddr(RTA_DST, *argv, &hp); 713 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 714 gateway = *argv; 715 (void) getaddr(RTA_GATEWAY, *argv, &hp); 716 } else { 717 (void) getaddr(RTA_NETMASK, *argv, 0); 718 forcenet = 1; 719 } 720 } 721 } 722 if (forcehost) { 723 ishost = 1; 724 #ifdef INET6 725 if (af == AF_INET6) { 726 rtm_addrs &= ~RTA_NETMASK; 727 memset((void *)&so_mask, 0, sizeof(so_mask)); 728 } 729 #endif 730 } 731 if (forcenet) 732 ishost = 0; 733 flags |= RTF_UP; 734 if (ishost) 735 flags |= RTF_HOST; 736 if (iflag == 0) 737 flags |= RTF_GATEWAY; 738 if (proxy) { 739 so_dst.sinarp.sin_other = SIN_PROXY; 740 flags |= RTF_ANNOUNCE; 741 } 742 for (attempts = 1; ; attempts++) { 743 errno = 0; 744 if ((ret = rtmsg(*cmd, flags)) == 0) 745 break; 746 if (errno != ENETUNREACH && errno != ESRCH) 747 break; 748 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 749 hp->h_addr_list++; 750 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 751 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 752 } else 753 break; 754 } 755 if (*cmd == 'g') 756 exit(0); 757 if (!qflag) { 758 oerrno = errno; 759 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 760 if (*gateway) { 761 (void) printf(": gateway %s", gateway); 762 if (attempts > 1 && ret == 0 && af == AF_INET) 763 (void) printf(" (%s)", 764 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 765 } 766 if (ret == 0) { 767 (void) printf("\n"); 768 } else { 769 switch (oerrno) { 770 case ESRCH: 771 err = "not in table"; 772 break; 773 case EBUSY: 774 err = "entry in use"; 775 break; 776 case ENOBUFS: 777 err = "routing table overflow"; 778 break; 779 case EDQUOT: /* handle recursion avoidance in rt_setgate() */ 780 err = "gateway uses the same route"; 781 break; 782 default: 783 err = strerror(oerrno); 784 break; 785 } 786 (void) printf(": %s\n", err); 787 } 788 } 789 exit(ret != 0); 790 } 791 792 void 793 inet_makenetandmask(net, sin, bits) 794 u_long net, bits; 795 struct sockaddr_in *sin; 796 { 797 u_long addr, mask = 0; 798 char *cp; 799 800 rtm_addrs |= RTA_NETMASK; 801 if (net == 0) 802 mask = addr = 0; 803 else if (net < 128) { 804 addr = net << IN_CLASSA_NSHIFT; 805 mask = IN_CLASSA_NET; 806 } else if (net < 65536) { 807 addr = net << IN_CLASSB_NSHIFT; 808 mask = IN_CLASSB_NET; 809 } else if (net < 16777216L) { 810 addr = net << IN_CLASSC_NSHIFT; 811 mask = IN_CLASSC_NET; 812 } else { 813 addr = net; 814 if ((addr & IN_CLASSA_HOST) == 0) 815 mask = IN_CLASSA_NET; 816 else if ((addr & IN_CLASSB_HOST) == 0) 817 mask = IN_CLASSB_NET; 818 else if ((addr & IN_CLASSC_HOST) == 0) 819 mask = IN_CLASSC_NET; 820 else 821 mask = -1; 822 } 823 if (bits) 824 mask = 0xffffffff << (32 - bits); 825 sin->sin_addr.s_addr = htonl(addr); 826 sin = &so_mask.sin; 827 sin->sin_addr.s_addr = htonl(mask); 828 sin->sin_len = 0; 829 sin->sin_family = 0; 830 cp = (char *)(&sin->sin_addr + 1); 831 while (*--cp == 0 && cp > (char *)sin) 832 ; 833 sin->sin_len = 1 + cp - (char *)sin; 834 } 835 836 #ifdef INET6 837 /* 838 * XXX the function may need more improvement... 839 */ 840 static int 841 inet6_makenetandmask(sin6, plen) 842 struct sockaddr_in6 *sin6; 843 char *plen; 844 { 845 struct in6_addr in6; 846 847 if (!plen) { 848 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 849 sin6->sin6_scope_id == 0) { 850 plen = "0"; 851 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 852 /* aggregatable global unicast - RFC2374 */ 853 memset(&in6, 0, sizeof(in6)); 854 if (!memcmp(&sin6->sin6_addr.s6_addr[8], 855 &in6.s6_addr[8], 8)) 856 plen = "64"; 857 } 858 } 859 860 if (!plen || strcmp(plen, "128") == 0) 861 return 1; 862 rtm_addrs |= RTA_NETMASK; 863 (void)prefixlen(plen); 864 return 0; 865 } 866 #endif 867 868 /* 869 * Interpret an argument as a network address of some kind, 870 * returning 1 if a host address, 0 if a network address. 871 */ 872 int 873 getaddr(which, s, hpp) 874 int which; 875 char *s; 876 struct hostent **hpp; 877 { 878 sup su; 879 struct hostent *hp; 880 struct netent *np; 881 u_long val; 882 char *q; 883 int afamily; /* local copy of af so we can change it */ 884 885 if (af == 0) { 886 af = AF_INET; 887 aflen = sizeof(struct sockaddr_in); 888 } 889 afamily = af; 890 rtm_addrs |= which; 891 switch (which) { 892 case RTA_DST: 893 su = &so_dst; 894 break; 895 case RTA_GATEWAY: 896 su = &so_gate; 897 if (iflag) { 898 struct ifaddrs *ifap, *ifa; 899 struct sockaddr_dl *sdl = NULL; 900 901 if (getifaddrs(&ifap)) 902 err(1, "getifaddrs"); 903 904 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 905 if (ifa->ifa_addr->sa_family != AF_LINK) 906 continue; 907 908 if (strcmp(s, ifa->ifa_name)) 909 continue; 910 911 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 912 } 913 /* If we found it, then use it */ 914 if (sdl) { 915 /* 916 * Copy is safe since we have a 917 * sockaddr_storage member in sockunion{}. 918 * Note that we need to copy before calling 919 * freeifaddrs(). 920 */ 921 memcpy(&su->sdl, sdl, sdl->sdl_len); 922 } 923 freeifaddrs(ifap); 924 if (sdl) 925 return(1); 926 } 927 break; 928 case RTA_NETMASK: 929 su = &so_mask; 930 break; 931 case RTA_GENMASK: 932 su = &so_genmask; 933 break; 934 case RTA_IFP: 935 su = &so_ifp; 936 afamily = AF_LINK; 937 break; 938 case RTA_IFA: 939 su = &so_ifa; 940 break; 941 default: 942 usage("internal error"); 943 /*NOTREACHED*/ 944 } 945 su->sa.sa_len = aflen; 946 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 947 if (strcmp(s, "default") == 0) { 948 /* 949 * Default is net 0.0.0.0/0 950 */ 951 switch (which) { 952 case RTA_DST: 953 forcenet++; 954 #if 0 955 bzero(su, sizeof(*su)); /* for readability */ 956 #endif 957 (void) getaddr(RTA_NETMASK, s, 0); 958 break; 959 #if 0 960 case RTA_NETMASK: 961 case RTA_GENMASK: 962 bzero(su, sizeof(*su)); /* for readability */ 963 #endif 964 } 965 return (0); 966 } 967 switch (afamily) { 968 #ifdef INET6 969 case AF_INET6: 970 { 971 struct addrinfo hints, *res; 972 973 q = NULL; 974 if (which == RTA_DST && (q = strchr(s, '/')) != NULL) 975 *q = '\0'; 976 memset(&hints, 0, sizeof(hints)); 977 hints.ai_family = afamily; /*AF_INET6*/ 978 hints.ai_flags = AI_NUMERICHOST; 979 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 980 if (getaddrinfo(s, "0", &hints, &res) != 0 || 981 res->ai_family != AF_INET6 || 982 res->ai_addrlen != sizeof(su->sin6)) { 983 (void) fprintf(stderr, "%s: bad value\n", s); 984 exit(1); 985 } 986 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 987 #ifdef __KAME__ 988 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 989 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 990 su->sin6.sin6_scope_id) { 991 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 992 htons(su->sin6.sin6_scope_id); 993 su->sin6.sin6_scope_id = 0; 994 } 995 #endif 996 freeaddrinfo(res); 997 if (q != NULL) 998 *q++ = '/'; 999 if (which == RTA_DST) 1000 return (inet6_makenetandmask(&su->sin6, q)); 1001 return (0); 1002 } 1003 #endif /* INET6 */ 1004 1005 case AF_APPLETALK: 1006 if (!atalk_aton(s, &su->sat.sat_addr)) 1007 errx(EX_NOHOST, "bad address: %s", s); 1008 rtm_addrs |= RTA_NETMASK; 1009 return(forcehost || su->sat.sat_addr.s_node != 0); 1010 1011 case AF_LINK: 1012 link_addr(s, &su->sdl); 1013 return (1); 1014 1015 1016 case PF_ROUTE: 1017 su->sa.sa_len = sizeof(*su); 1018 sockaddr(s, &su->sa); 1019 return (1); 1020 1021 case AF_INET: 1022 default: 1023 break; 1024 } 1025 1026 if (hpp == NULL) 1027 hpp = &hp; 1028 *hpp = NULL; 1029 1030 q = strchr(s,'/'); 1031 if (q && which == RTA_DST) { 1032 *q = '\0'; 1033 if ((val = inet_network(s)) != INADDR_NONE) { 1034 inet_makenetandmask( 1035 val, &su->sin, strtoul(q+1, 0, 0)); 1036 return (0); 1037 } 1038 *q = '/'; 1039 } 1040 if ((which != RTA_DST || forcenet == 0) && 1041 inet_aton(s, &su->sin.sin_addr)) { 1042 val = su->sin.sin_addr.s_addr; 1043 if (which != RTA_DST || forcehost || 1044 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1045 return (1); 1046 else { 1047 val = ntohl(val); 1048 goto netdone; 1049 } 1050 } 1051 if (which == RTA_DST && forcehost == 0 && 1052 ((val = inet_network(s)) != INADDR_NONE || 1053 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) { 1054 netdone: 1055 inet_makenetandmask(val, &su->sin, 0); 1056 return (0); 1057 } 1058 hp = gethostbyname(s); 1059 if (hp) { 1060 *hpp = hp; 1061 su->sin.sin_family = hp->h_addrtype; 1062 memmove((char *)&su->sin.sin_addr, hp->h_addr, 1063 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1064 return (1); 1065 } 1066 errx(EX_NOHOST, "bad address: %s", s); 1067 } 1068 1069 int 1070 prefixlen(s) 1071 char *s; 1072 { 1073 int len = atoi(s), q, r; 1074 int max; 1075 char *p; 1076 1077 rtm_addrs |= RTA_NETMASK; 1078 switch (af) { 1079 #ifdef INET6 1080 case AF_INET6: 1081 max = 128; 1082 p = (char *)&so_mask.sin6.sin6_addr; 1083 break; 1084 #endif 1085 case AF_INET: 1086 max = 32; 1087 p = (char *)&so_mask.sin.sin_addr; 1088 break; 1089 default: 1090 (void) fprintf(stderr, "prefixlen not supported in this af\n"); 1091 exit(1); 1092 /*NOTREACHED*/ 1093 } 1094 1095 if (len < 0 || max < len) { 1096 (void) fprintf(stderr, "%s: bad value\n", s); 1097 exit(1); 1098 } 1099 1100 q = len >> 3; 1101 r = len & 7; 1102 so_mask.sa.sa_family = af; 1103 so_mask.sa.sa_len = aflen; 1104 memset((void *)p, 0, max / 8); 1105 if (q > 0) 1106 memset((void *)p, 0xff, q); 1107 if (r > 0) 1108 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1109 if (len == max) 1110 return -1; 1111 else 1112 return len; 1113 } 1114 1115 void 1116 interfaces() 1117 { 1118 size_t needed; 1119 int mib[6]; 1120 char *buf, *lim, *next, count = 0; 1121 struct rt_msghdr *rtm; 1122 1123 retry2: 1124 mib[0] = CTL_NET; 1125 mib[1] = PF_ROUTE; 1126 mib[2] = 0; /* protocol */ 1127 mib[3] = 0; /* wildcard address family */ 1128 mib[4] = NET_RT_IFLIST; 1129 mib[5] = 0; /* no flags */ 1130 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1131 err(EX_OSERR, "route-sysctl-estimate"); 1132 if ((buf = malloc(needed)) == NULL) 1133 errx(EX_OSERR, "malloc failed"); 1134 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 1135 if (errno == ENOMEM && count++ < 10) { 1136 warnx("Routing table grew, retrying"); 1137 sleep(1); 1138 free(buf); 1139 goto retry2; 1140 } 1141 err(EX_OSERR, "actual retrieval of interface table"); 1142 } 1143 lim = buf + needed; 1144 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1145 rtm = (struct rt_msghdr *)next; 1146 print_rtmsg(rtm, rtm->rtm_msglen); 1147 } 1148 } 1149 1150 void 1151 monitor() 1152 { 1153 int n; 1154 char msg[2048]; 1155 1156 verbose = 1; 1157 if (debugonly) { 1158 interfaces(); 1159 exit(0); 1160 } 1161 for(;;) { 1162 time_t now; 1163 n = read(s, msg, 2048); 1164 now = time(NULL); 1165 (void) printf("\ngot message of size %d on %s", n, ctime(&now)); 1166 print_rtmsg((struct rt_msghdr *)msg, n); 1167 } 1168 } 1169 1170 struct { 1171 struct rt_msghdr m_rtm; 1172 char m_space[512]; 1173 } m_rtmsg; 1174 1175 int 1176 rtmsg(cmd, flags) 1177 int cmd, flags; 1178 { 1179 static int seq; 1180 int rlen; 1181 char *cp = m_rtmsg.m_space; 1182 int l; 1183 1184 #define NEXTADDR(w, u) \ 1185 if (rtm_addrs & (w)) {\ 1186 l = SA_SIZE(&(u.sa)); memmove(cp, &(u), l); cp += l;\ 1187 if (verbose) sodump(&(u),"u");\ 1188 } 1189 1190 errno = 0; 1191 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1192 if (cmd == 'a') 1193 cmd = RTM_ADD; 1194 else if (cmd == 'c') 1195 cmd = RTM_CHANGE; 1196 else if (cmd == 'g') { 1197 cmd = RTM_GET; 1198 if (so_ifp.sa.sa_family == 0) { 1199 so_ifp.sa.sa_family = AF_LINK; 1200 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1201 rtm_addrs |= RTA_IFP; 1202 } 1203 } else 1204 cmd = RTM_DELETE; 1205 #define rtm m_rtmsg.m_rtm 1206 rtm.rtm_type = cmd; 1207 rtm.rtm_flags = flags; 1208 rtm.rtm_version = RTM_VERSION; 1209 rtm.rtm_seq = ++seq; 1210 rtm.rtm_addrs = rtm_addrs; 1211 rtm.rtm_rmx = rt_metrics; 1212 rtm.rtm_inits = rtm_inits; 1213 1214 if (rtm_addrs & RTA_NETMASK) 1215 mask_addr(); 1216 NEXTADDR(RTA_DST, so_dst); 1217 NEXTADDR(RTA_GATEWAY, so_gate); 1218 NEXTADDR(RTA_NETMASK, so_mask); 1219 NEXTADDR(RTA_GENMASK, so_genmask); 1220 NEXTADDR(RTA_IFP, so_ifp); 1221 NEXTADDR(RTA_IFA, so_ifa); 1222 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1223 if (verbose) 1224 print_rtmsg(&rtm, l); 1225 if (debugonly) 1226 return (0); 1227 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1228 if (errno == EPERM) 1229 err(1, "writing to routing socket"); 1230 warn("writing to routing socket"); 1231 return (-1); 1232 } 1233 if (cmd == RTM_GET) { 1234 do { 1235 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1236 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1237 if (l < 0) 1238 warn("read from routing socket"); 1239 else 1240 print_getmsg(&rtm, l); 1241 } 1242 #undef rtm 1243 return (0); 1244 } 1245 1246 void 1247 mask_addr() 1248 { 1249 int olen = so_mask.sa.sa_len; 1250 char *cp1 = olen + (char *)&so_mask, *cp2; 1251 1252 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1253 if (*--cp1 != 0) { 1254 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1255 break; 1256 } 1257 if ((rtm_addrs & RTA_DST) == 0) 1258 return; 1259 switch (so_dst.sa.sa_family) { 1260 case AF_INET: 1261 #ifdef INET6 1262 case AF_INET6: 1263 #endif 1264 case AF_APPLETALK: 1265 case 0: 1266 return; 1267 } 1268 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1269 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1270 while (cp2 > cp1) 1271 *--cp2 = 0; 1272 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1273 while (cp1 > so_dst.sa.sa_data) 1274 *--cp1 &= *--cp2; 1275 } 1276 1277 char *msgtypes[] = { 1278 "", 1279 "RTM_ADD: Add Route", 1280 "RTM_DELETE: Delete Route", 1281 "RTM_CHANGE: Change Metrics or flags", 1282 "RTM_GET: Report Metrics", 1283 "RTM_LOSING: Kernel Suspects Partitioning", 1284 "RTM_REDIRECT: Told to use different route", 1285 "RTM_MISS: Lookup failed on this address", 1286 "RTM_LOCK: fix specified metrics", 1287 "RTM_OLDADD: caused by SIOCADDRT", 1288 "RTM_OLDDEL: caused by SIOCDELRT", 1289 "RTM_RESOLVE: Route created by cloning", 1290 "RTM_NEWADDR: address being added to iface", 1291 "RTM_DELADDR: address being removed from iface", 1292 "RTM_IFINFO: iface status change", 1293 "RTM_NEWMADDR: new multicast group membership on iface", 1294 "RTM_DELMADDR: multicast group membership removed from iface", 1295 "RTM_IFANNOUNCE: interface arrival/departure", 1296 0, 1297 }; 1298 1299 char metricnames[] = 1300 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1301 "\1mtu"; 1302 char routeflags[] = 1303 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1304 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1305 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1306 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1307 char ifnetflags[] = 1308 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1309 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1310 "\017LINK2\020MULTICAST"; 1311 char addrnames[] = 1312 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1313 1314 void 1315 print_rtmsg(rtm, msglen) 1316 struct rt_msghdr *rtm; 1317 int msglen; 1318 { 1319 struct if_msghdr *ifm; 1320 struct ifa_msghdr *ifam; 1321 #ifdef RTM_NEWMADDR 1322 struct ifma_msghdr *ifmam; 1323 #endif 1324 struct if_announcemsghdr *ifan; 1325 char *state; 1326 1327 if (verbose == 0) 1328 return; 1329 if (rtm->rtm_version != RTM_VERSION) { 1330 (void) printf("routing message version %d not understood\n", 1331 rtm->rtm_version); 1332 return; 1333 } 1334 if (msgtypes[rtm->rtm_type] != NULL) 1335 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1336 else 1337 (void)printf("#%d: ", rtm->rtm_type); 1338 (void)printf("len %d, ", rtm->rtm_msglen); 1339 switch (rtm->rtm_type) { 1340 case RTM_IFINFO: 1341 ifm = (struct if_msghdr *)rtm; 1342 (void) printf("if# %d, ", ifm->ifm_index); 1343 switch (ifm->ifm_data.ifi_link_state) { 1344 case LINK_STATE_DOWN: 1345 state = "down"; 1346 break; 1347 case LINK_STATE_UP: 1348 state = "up"; 1349 break; 1350 default: 1351 state = "unknown"; 1352 break; 1353 } 1354 (void) printf("link: %s, flags:", state); 1355 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1356 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1357 break; 1358 case RTM_NEWADDR: 1359 case RTM_DELADDR: 1360 ifam = (struct ifa_msghdr *)rtm; 1361 (void) printf("metric %d, flags:", ifam->ifam_metric); 1362 bprintf(stdout, ifam->ifam_flags, routeflags); 1363 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1364 break; 1365 #ifdef RTM_NEWMADDR 1366 case RTM_NEWMADDR: 1367 case RTM_DELMADDR: 1368 ifmam = (struct ifma_msghdr *)rtm; 1369 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1370 break; 1371 #endif 1372 case RTM_IFANNOUNCE: 1373 ifan = (struct if_announcemsghdr *)rtm; 1374 (void) printf("if# %d, what: ", ifan->ifan_index); 1375 switch (ifan->ifan_what) { 1376 case IFAN_ARRIVAL: 1377 printf("arrival"); 1378 break; 1379 case IFAN_DEPARTURE: 1380 printf("departure"); 1381 break; 1382 default: 1383 printf("#%d", ifan->ifan_what); 1384 break; 1385 } 1386 printf("\n"); 1387 break; 1388 1389 default: 1390 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1391 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1392 bprintf(stdout, rtm->rtm_flags, routeflags); 1393 pmsg_common(rtm); 1394 } 1395 } 1396 1397 void 1398 print_getmsg(rtm, msglen) 1399 struct rt_msghdr *rtm; 1400 int msglen; 1401 { 1402 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1403 struct sockaddr_dl *ifp = NULL; 1404 struct sockaddr *sa; 1405 char *cp; 1406 int i; 1407 1408 (void) printf(" route to: %s\n", routename(&so_dst)); 1409 if (rtm->rtm_version != RTM_VERSION) { 1410 warnx("routing message version %d not understood", 1411 rtm->rtm_version); 1412 return; 1413 } 1414 if (rtm->rtm_msglen > msglen) { 1415 warnx("message length mismatch, in packet %d, returned %d", 1416 rtm->rtm_msglen, msglen); 1417 } 1418 if (rtm->rtm_errno) { 1419 errno = rtm->rtm_errno; 1420 warn("message indicates error %d", errno); 1421 return; 1422 } 1423 cp = ((char *)(rtm + 1)); 1424 if (rtm->rtm_addrs) 1425 for (i = 1; i; i <<= 1) 1426 if (i & rtm->rtm_addrs) { 1427 sa = (struct sockaddr *)cp; 1428 switch (i) { 1429 case RTA_DST: 1430 dst = sa; 1431 break; 1432 case RTA_GATEWAY: 1433 gate = sa; 1434 break; 1435 case RTA_NETMASK: 1436 mask = sa; 1437 break; 1438 case RTA_IFP: 1439 if (sa->sa_family == AF_LINK && 1440 ((struct sockaddr_dl *)sa)->sdl_nlen) 1441 ifp = (struct sockaddr_dl *)sa; 1442 break; 1443 } 1444 cp += SA_SIZE(sa); 1445 } 1446 if (dst && mask) 1447 mask->sa_family = dst->sa_family; /* XXX */ 1448 if (dst) 1449 (void)printf("destination: %s\n", routename(dst)); 1450 if (mask) { 1451 int savenflag = nflag; 1452 1453 nflag = 1; 1454 (void)printf(" mask: %s\n", routename(mask)); 1455 nflag = savenflag; 1456 } 1457 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1458 (void)printf(" gateway: %s\n", routename(gate)); 1459 if (ifp) 1460 (void)printf(" interface: %.*s\n", 1461 ifp->sdl_nlen, ifp->sdl_data); 1462 (void)printf(" flags: "); 1463 bprintf(stdout, rtm->rtm_flags, routeflags); 1464 1465 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1466 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1467 1468 (void) printf("\n%s\n", "\ 1469 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1470 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1471 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1472 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1473 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1474 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1475 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1476 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1477 if (rtm->rtm_rmx.rmx_expire) 1478 rtm->rtm_rmx.rmx_expire -= time(0); 1479 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1480 #undef lock 1481 #undef msec 1482 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1483 if (verbose) 1484 pmsg_common(rtm); 1485 else if (rtm->rtm_addrs &~ RTA_IGN) { 1486 (void) printf("sockaddrs: "); 1487 bprintf(stdout, rtm->rtm_addrs, addrnames); 1488 putchar('\n'); 1489 } 1490 #undef RTA_IGN 1491 } 1492 1493 void 1494 pmsg_common(rtm) 1495 struct rt_msghdr *rtm; 1496 { 1497 (void) printf("\nlocks: "); 1498 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1499 (void) printf(" inits: "); 1500 bprintf(stdout, rtm->rtm_inits, metricnames); 1501 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1502 } 1503 1504 void 1505 pmsg_addrs(cp, addrs) 1506 char *cp; 1507 int addrs; 1508 { 1509 struct sockaddr *sa; 1510 int i; 1511 1512 if (addrs == 0) { 1513 (void) putchar('\n'); 1514 return; 1515 } 1516 (void) printf("\nsockaddrs: "); 1517 bprintf(stdout, addrs, addrnames); 1518 (void) putchar('\n'); 1519 for (i = 1; i; i <<= 1) 1520 if (i & addrs) { 1521 sa = (struct sockaddr *)cp; 1522 (void) printf(" %s", routename(sa)); 1523 cp += SA_SIZE(sa); 1524 } 1525 (void) putchar('\n'); 1526 (void) fflush(stdout); 1527 } 1528 1529 void 1530 bprintf(fp, b, s) 1531 FILE *fp; 1532 int b; 1533 u_char *s; 1534 { 1535 int i; 1536 int gotsome = 0; 1537 1538 if (b == 0) 1539 return; 1540 while ((i = *s++) != 0) { 1541 if (b & (1 << (i-1))) { 1542 if (gotsome == 0) 1543 i = '<'; 1544 else 1545 i = ','; 1546 (void) putc(i, fp); 1547 gotsome = 1; 1548 for (; (i = *s) > 32; s++) 1549 (void) putc(i, fp); 1550 } else 1551 while (*s > 32) 1552 s++; 1553 } 1554 if (gotsome) 1555 (void) putc('>', fp); 1556 } 1557 1558 int 1559 keyword(cp) 1560 char *cp; 1561 { 1562 struct keytab *kt = keywords; 1563 1564 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1565 kt++; 1566 return kt->kt_i; 1567 } 1568 1569 void 1570 sodump(su, which) 1571 sup su; 1572 char *which; 1573 { 1574 switch (su->sa.sa_family) { 1575 case AF_LINK: 1576 (void) printf("%s: link %s; ", 1577 which, link_ntoa(&su->sdl)); 1578 break; 1579 case AF_INET: 1580 (void) printf("%s: inet %s; ", 1581 which, inet_ntoa(su->sin.sin_addr)); 1582 break; 1583 case AF_APPLETALK: 1584 (void) printf("%s: atalk %s; ", 1585 which, atalk_ntoa(su->sat.sat_addr)); 1586 break; 1587 } 1588 (void) fflush(stdout); 1589 } 1590 1591 /* States*/ 1592 #define VIRGIN 0 1593 #define GOTONE 1 1594 #define GOTTWO 2 1595 /* Inputs */ 1596 #define DIGIT (4*0) 1597 #define END (4*1) 1598 #define DELIM (4*2) 1599 1600 void 1601 sockaddr(addr, sa) 1602 char *addr; 1603 struct sockaddr *sa; 1604 { 1605 char *cp = (char *)sa; 1606 int size = sa->sa_len; 1607 char *cplim = cp + size; 1608 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1609 1610 memset(cp, 0, size); 1611 cp++; 1612 do { 1613 if ((*addr >= '0') && (*addr <= '9')) { 1614 new = *addr - '0'; 1615 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1616 new = *addr - 'a' + 10; 1617 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1618 new = *addr - 'A' + 10; 1619 } else if (*addr == 0) 1620 state |= END; 1621 else 1622 state |= DELIM; 1623 addr++; 1624 switch (state /* | INPUT */) { 1625 case GOTTWO | DIGIT: 1626 *cp++ = byte; /*FALLTHROUGH*/ 1627 case VIRGIN | DIGIT: 1628 state = GOTONE; byte = new; continue; 1629 case GOTONE | DIGIT: 1630 state = GOTTWO; byte = new + (byte << 4); continue; 1631 default: /* | DELIM */ 1632 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1633 case GOTONE | END: 1634 case GOTTWO | END: 1635 *cp++ = byte; /* FALLTHROUGH */ 1636 case VIRGIN | END: 1637 break; 1638 } 1639 break; 1640 } while (cp < cplim); 1641 sa->sa_len = cp - (char *)sa; 1642 } 1643 1644 int 1645 atalk_aton(const char *text, struct at_addr *addr) 1646 { 1647 u_int net, node; 1648 1649 if (sscanf(text, "%u.%u", &net, &node) != 2 1650 || net > 0xffff || node > 0xff) 1651 return(0); 1652 addr->s_net = htons(net); 1653 addr->s_node = node; 1654 return(1); 1655 } 1656 1657 char * 1658 atalk_ntoa(struct at_addr at) 1659 { 1660 static char buf[20]; 1661 1662 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1663 return(buf); 1664 } 1665