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 case K_SHOW: 173 uid = 0; 174 /* FALLTHROUGH */ 175 176 case K_CHANGE: 177 case K_ADD: 178 case K_DEL: 179 case K_DELETE: 180 newroute(argc, argv); 181 /* NOTREACHED */ 182 183 case K_MONITOR: 184 monitor(); 185 /* NOTREACHED */ 186 187 case K_FLUSH: 188 flushroutes(argc, argv); 189 exit(0); 190 /* NOTREACHED */ 191 } 192 usage(*argv); 193 /* NOTREACHED */ 194 } 195 196 /* 197 * Purge all entries in the routing tables not 198 * associated with network interfaces. 199 */ 200 void 201 flushroutes(argc, argv) 202 int argc; 203 char *argv[]; 204 { 205 size_t needed; 206 int mib[6], rlen, seqno, count = 0; 207 char *buf, *next, *lim; 208 struct rt_msghdr *rtm; 209 210 if (uid && !debugonly) { 211 errx(EX_NOPERM, "must be root to alter routing table"); 212 } 213 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 214 if (argc > 1) { 215 argv++; 216 if (argc == 2 && **argv == '-') 217 switch (keyword(*argv + 1)) { 218 case K_INET: 219 af = AF_INET; 220 break; 221 #ifdef INET6 222 case K_INET6: 223 af = AF_INET6; 224 break; 225 #endif 226 case K_ATALK: 227 af = AF_APPLETALK; 228 break; 229 case K_LINK: 230 af = AF_LINK; 231 break; 232 default: 233 goto bad; 234 } else 235 bad: usage(*argv); 236 } 237 retry: 238 mib[0] = CTL_NET; 239 mib[1] = PF_ROUTE; 240 mib[2] = 0; /* protocol */ 241 mib[3] = 0; /* wildcard address family */ 242 mib[4] = NET_RT_DUMP; 243 mib[5] = 0; /* no flags */ 244 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 245 err(EX_OSERR, "route-sysctl-estimate"); 246 if ((buf = malloc(needed)) == NULL) 247 errx(EX_OSERR, "malloc failed"); 248 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 249 if (errno == ENOMEM && count++ < 10) { 250 warnx("Routing table grew, retrying"); 251 sleep(1); 252 free(buf); 253 goto retry; 254 } 255 err(EX_OSERR, "route-sysctl-get"); 256 } 257 lim = buf + needed; 258 if (verbose) 259 (void) printf("Examining routing table from sysctl\n"); 260 seqno = 0; /* ??? */ 261 for (next = buf; next < lim; next += rtm->rtm_msglen) { 262 rtm = (struct rt_msghdr *)next; 263 if (verbose) 264 print_rtmsg(rtm, rtm->rtm_msglen); 265 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 266 continue; 267 if (af) { 268 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 269 270 if (sa->sa_family != af) 271 continue; 272 } 273 if (debugonly) 274 continue; 275 rtm->rtm_type = RTM_DELETE; 276 rtm->rtm_seq = seqno; 277 rlen = write(s, next, rtm->rtm_msglen); 278 if (rlen < 0 && errno == EPERM) 279 err(1, "write to routing socket"); 280 if (rlen < (int)rtm->rtm_msglen) { 281 warn("write to routing socket"); 282 (void) printf("got only %d for rlen\n", rlen); 283 free(buf); 284 goto retry; 285 break; 286 } 287 seqno++; 288 if (qflag) 289 continue; 290 if (verbose) 291 print_rtmsg(rtm, rlen); 292 else { 293 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 294 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 295 routename(sa) : netname(sa)); 296 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa); 297 (void) printf("%-20.20s ", routename(sa)); 298 (void) printf("done\n"); 299 } 300 } 301 } 302 303 const char * 304 routename(sa) 305 struct sockaddr *sa; 306 { 307 char *cp; 308 static char line[MAXHOSTNAMELEN + 1]; 309 struct hostent *hp; 310 static char domain[MAXHOSTNAMELEN + 1]; 311 static int first = 1, n; 312 313 if (first) { 314 first = 0; 315 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 316 (cp = strchr(domain, '.'))) { 317 domain[MAXHOSTNAMELEN] = '\0'; 318 (void) strcpy(domain, cp + 1); 319 } else 320 domain[0] = 0; 321 } 322 323 if (sa->sa_len == 0) 324 strcpy(line, "default"); 325 else switch (sa->sa_family) { 326 327 case AF_INET: 328 { struct in_addr in; 329 in = ((struct sockaddr_in *)sa)->sin_addr; 330 331 cp = 0; 332 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 333 cp = "default"; 334 if (cp == 0 && !nflag) { 335 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 336 AF_INET); 337 if (hp) { 338 if ((cp = strchr(hp->h_name, '.')) && 339 !strcmp(cp + 1, domain)) 340 *cp = 0; 341 cp = hp->h_name; 342 } 343 } 344 if (cp) { 345 strncpy(line, cp, sizeof(line) - 1); 346 line[sizeof(line) - 1] = '\0'; 347 } else 348 (void) sprintf(line, "%s", inet_ntoa(in)); 349 break; 350 } 351 352 #ifdef INET6 353 case AF_INET6: 354 { 355 struct sockaddr_in6 sin6; /* use static var for safety */ 356 int niflags = 0; 357 358 memset(&sin6, 0, sizeof(sin6)); 359 memcpy(&sin6, sa, sa->sa_len); 360 sin6.sin6_len = sizeof(struct sockaddr_in6); 361 sin6.sin6_family = AF_INET6; 362 #ifdef __KAME__ 363 if (sa->sa_len == sizeof(struct sockaddr_in6) && 364 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 365 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 366 sin6.sin6_scope_id == 0) { 367 sin6.sin6_scope_id = 368 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 369 sin6.sin6_addr.s6_addr[2] = 0; 370 sin6.sin6_addr.s6_addr[3] = 0; 371 } 372 #endif 373 if (nflag) 374 niflags |= NI_NUMERICHOST; 375 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 376 line, sizeof(line), NULL, 0, niflags) != 0) 377 strncpy(line, "invalid", sizeof(line)); 378 379 return(line); 380 } 381 #endif 382 383 case AF_APPLETALK: 384 (void) snprintf(line, sizeof(line), "atalk %s", 385 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 386 break; 387 388 case AF_LINK: 389 return (link_ntoa((struct sockaddr_dl *)sa)); 390 391 default: 392 { u_short *s = (u_short *)sa; 393 u_short *slim = s + ((sa->sa_len + 1) >> 1); 394 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 395 char *cpe = line + sizeof(line); 396 397 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 398 if ((n = snprintf(cp, cpe - cp, " %x", *s)) > 0) 399 cp += n; 400 else 401 *cp = '\0'; 402 break; 403 } 404 } 405 return (line); 406 } 407 408 /* 409 * Return the name of the network whose address is given. 410 * The address is assumed to be that of a net or subnet, not a host. 411 */ 412 const char * 413 netname(sa) 414 struct sockaddr *sa; 415 { 416 char *cp = 0; 417 static char line[MAXHOSTNAMELEN + 1]; 418 struct netent *np = 0; 419 u_long net, mask; 420 u_long i; 421 int n, subnetshift; 422 423 switch (sa->sa_family) { 424 425 case AF_INET: 426 { struct in_addr in; 427 in = ((struct sockaddr_in *)sa)->sin_addr; 428 429 i = in.s_addr = ntohl(in.s_addr); 430 if (in.s_addr == 0) 431 cp = "default"; 432 else if (!nflag) { 433 if (IN_CLASSA(i)) { 434 mask = IN_CLASSA_NET; 435 subnetshift = 8; 436 } else if (IN_CLASSB(i)) { 437 mask = IN_CLASSB_NET; 438 subnetshift = 8; 439 } else { 440 mask = IN_CLASSC_NET; 441 subnetshift = 4; 442 } 443 /* 444 * If there are more bits than the standard mask 445 * would suggest, subnets must be in use. 446 * Guess at the subnet mask, assuming reasonable 447 * width subnet fields. 448 */ 449 while (in.s_addr &~ mask) 450 mask = (long)mask >> subnetshift; 451 net = in.s_addr & mask; 452 while ((mask & 1) == 0) 453 mask >>= 1, net >>= 1; 454 np = getnetbyaddr(net, AF_INET); 455 if (np) 456 cp = np->n_name; 457 } 458 #define C(x) (unsigned)((x) & 0xff) 459 if (cp) 460 strncpy(line, cp, sizeof(line)); 461 else if ((in.s_addr & 0xffffff) == 0) 462 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 463 else if ((in.s_addr & 0xffff) == 0) 464 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 465 C(in.s_addr >> 16)); 466 else if ((in.s_addr & 0xff) == 0) 467 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 468 C(in.s_addr >> 16), C(in.s_addr >> 8)); 469 else 470 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 471 C(in.s_addr >> 16), C(in.s_addr >> 8), 472 C(in.s_addr)); 473 #undef C 474 break; 475 } 476 477 #ifdef INET6 478 case AF_INET6: 479 { 480 struct sockaddr_in6 sin6; /* use static var for safety */ 481 int niflags = 0; 482 483 memset(&sin6, 0, sizeof(sin6)); 484 memcpy(&sin6, sa, sa->sa_len); 485 sin6.sin6_len = sizeof(struct sockaddr_in6); 486 sin6.sin6_family = AF_INET6; 487 #ifdef __KAME__ 488 if (sa->sa_len == sizeof(struct sockaddr_in6) && 489 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 490 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 491 sin6.sin6_scope_id == 0) { 492 sin6.sin6_scope_id = 493 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 494 sin6.sin6_addr.s6_addr[2] = 0; 495 sin6.sin6_addr.s6_addr[3] = 0; 496 } 497 #endif 498 if (nflag) 499 niflags |= NI_NUMERICHOST; 500 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 501 line, sizeof(line), NULL, 0, niflags) != 0) 502 strncpy(line, "invalid", sizeof(line)); 503 504 return(line); 505 } 506 #endif 507 508 case AF_APPLETALK: 509 (void) snprintf(line, sizeof(line), "atalk %s", 510 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 511 break; 512 513 case AF_LINK: 514 return (link_ntoa((struct sockaddr_dl *)sa)); 515 516 517 default: 518 { u_short *s = (u_short *)sa->sa_data; 519 u_short *slim = s + ((sa->sa_len + 1)>>1); 520 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 521 char *cpe = line + sizeof(line); 522 523 while (s < slim && cp < cpe) 524 if ((n = snprintf(cp, cpe - cp, " %x", *s++)) > 0) 525 cp += n; 526 else 527 *cp = '\0'; 528 break; 529 } 530 } 531 return (line); 532 } 533 534 void 535 set_metric(value, key) 536 char *value; 537 int key; 538 { 539 int flag = 0; 540 u_long noval, *valp = &noval; 541 542 switch (key) { 543 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 544 caseof(K_MTU, RTV_MTU, rmx_mtu); 545 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 546 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 547 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 548 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 549 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 550 caseof(K_RTT, RTV_RTT, rmx_rtt); 551 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 552 caseof(K_WEIGHT, RTV_WEIGHT, rmx_weight); 553 } 554 rtm_inits |= flag; 555 if (lockrest || locking) 556 rt_metrics.rmx_locks |= flag; 557 if (locking) 558 locking = 0; 559 *valp = atoi(value); 560 } 561 562 void 563 newroute(argc, argv) 564 int argc; 565 char **argv; 566 { 567 char *cmd, *dest = "", *gateway = "", *err; 568 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC; 569 int key; 570 struct hostent *hp = 0; 571 572 if (uid) { 573 errx(EX_NOPERM, "must be root to alter routing table"); 574 } 575 cmd = argv[0]; 576 if (*cmd != 'g' && *cmd != 's') 577 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 578 579 while (--argc > 0) { 580 if (**(++argv)== '-') { 581 switch (key = keyword(1 + *argv)) { 582 case K_LINK: 583 af = AF_LINK; 584 aflen = sizeof(struct sockaddr_dl); 585 break; 586 case K_INET: 587 af = AF_INET; 588 aflen = sizeof(struct sockaddr_in); 589 break; 590 #ifdef INET6 591 case K_INET6: 592 af = AF_INET6; 593 aflen = sizeof(struct sockaddr_in6); 594 break; 595 #endif 596 case K_ATALK: 597 af = AF_APPLETALK; 598 aflen = sizeof(struct sockaddr_at); 599 break; 600 case K_SA: 601 af = PF_ROUTE; 602 aflen = sizeof(union sockunion); 603 break; 604 case K_IFACE: 605 case K_INTERFACE: 606 iflag++; 607 break; 608 case K_NOSTATIC: 609 flags &= ~RTF_STATIC; 610 break; 611 case K_LOCK: 612 locking = 1; 613 break; 614 case K_LOCKREST: 615 lockrest = 1; 616 break; 617 case K_HOST: 618 forcehost++; 619 break; 620 case K_REJECT: 621 flags |= RTF_REJECT; 622 break; 623 case K_BLACKHOLE: 624 flags |= RTF_BLACKHOLE; 625 break; 626 case K_PROTO1: 627 flags |= RTF_PROTO1; 628 break; 629 case K_PROTO2: 630 flags |= RTF_PROTO2; 631 break; 632 case K_PROXY: 633 proxy = 1; 634 break; 635 case K_XRESOLVE: 636 flags |= RTF_XRESOLVE; 637 break; 638 case K_STATIC: 639 flags |= RTF_STATIC; 640 break; 641 case K_STICKY: 642 flags |= RTF_STICKY; 643 break; 644 case K_NOSTICK: 645 flags &= ~RTF_STICKY; 646 break; 647 case K_IFA: 648 if (!--argc) 649 usage((char *)NULL); 650 (void) getaddr(RTA_IFA, *++argv, 0); 651 break; 652 case K_IFP: 653 if (!--argc) 654 usage((char *)NULL); 655 (void) getaddr(RTA_IFP, *++argv, 0); 656 break; 657 case K_GENMASK: 658 if (!--argc) 659 usage((char *)NULL); 660 (void) getaddr(RTA_GENMASK, *++argv, 0); 661 break; 662 case K_GATEWAY: 663 if (!--argc) 664 usage((char *)NULL); 665 (void) getaddr(RTA_GATEWAY, *++argv, 0); 666 break; 667 case K_DST: 668 if (!--argc) 669 usage((char *)NULL); 670 ishost = getaddr(RTA_DST, *++argv, &hp); 671 dest = *argv; 672 break; 673 case K_NETMASK: 674 if (!--argc) 675 usage((char *)NULL); 676 (void) getaddr(RTA_NETMASK, *++argv, 0); 677 /* FALLTHROUGH */ 678 case K_NET: 679 forcenet++; 680 break; 681 case K_PREFIXLEN: 682 if (!--argc) 683 usage((char *)NULL); 684 if (prefixlen(*++argv) == -1) { 685 forcenet = 0; 686 ishost = 1; 687 } else { 688 forcenet = 1; 689 ishost = 0; 690 } 691 break; 692 case K_MTU: 693 case K_HOPCOUNT: 694 case K_EXPIRE: 695 case K_RECVPIPE: 696 case K_SENDPIPE: 697 case K_SSTHRESH: 698 case K_RTT: 699 case K_RTTVAR: 700 case K_WEIGHT: 701 if (!--argc) 702 usage((char *)NULL); 703 set_metric(*++argv, key); 704 break; 705 default: 706 usage(1+*argv); 707 } 708 } else { 709 if ((rtm_addrs & RTA_DST) == 0) { 710 dest = *argv; 711 ishost = getaddr(RTA_DST, *argv, &hp); 712 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 713 gateway = *argv; 714 (void) getaddr(RTA_GATEWAY, *argv, &hp); 715 } else { 716 (void) getaddr(RTA_NETMASK, *argv, 0); 717 forcenet = 1; 718 } 719 } 720 } 721 if (forcehost) { 722 ishost = 1; 723 #ifdef INET6 724 if (af == AF_INET6) { 725 rtm_addrs &= ~RTA_NETMASK; 726 memset((void *)&so_mask, 0, sizeof(so_mask)); 727 } 728 #endif 729 } 730 if (forcenet) 731 ishost = 0; 732 flags |= RTF_UP; 733 if (ishost) 734 flags |= RTF_HOST; 735 if (iflag == 0) 736 flags |= RTF_GATEWAY; 737 if (proxy) { 738 so_dst.sinarp.sin_other = SIN_PROXY; 739 flags |= RTF_ANNOUNCE; 740 } 741 for (attempts = 1; ; attempts++) { 742 errno = 0; 743 if ((ret = rtmsg(*cmd, flags)) == 0) 744 break; 745 if (errno != ENETUNREACH && errno != ESRCH) 746 break; 747 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 748 hp->h_addr_list++; 749 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 750 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 751 } else 752 break; 753 } 754 if (*cmd == 'g' || *cmd == 's') 755 exit(ret != 0); 756 if (!qflag) { 757 oerrno = errno; 758 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 759 if (*gateway) { 760 (void) printf(": gateway %s", gateway); 761 if (attempts > 1 && ret == 0 && af == AF_INET) 762 (void) printf(" (%s)", 763 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 764 } 765 if (ret == 0) { 766 (void) printf("\n"); 767 } else { 768 switch (oerrno) { 769 case ESRCH: 770 err = "not in table"; 771 break; 772 case EBUSY: 773 err = "entry in use"; 774 break; 775 case ENOBUFS: 776 err = "not enough memory"; 777 break; 778 case EADDRINUSE: 779 /* handle recursion avoidance in rt_setgate() */ 780 err = "gateway uses the same route"; 781 break; 782 case EEXIST: 783 err = "route already in table"; 784 break; 785 default: 786 err = strerror(oerrno); 787 break; 788 } 789 (void) printf(": %s\n", err); 790 } 791 } 792 exit(ret != 0); 793 } 794 795 void 796 inet_makenetandmask(net, sin, bits) 797 u_long net, bits; 798 struct sockaddr_in *sin; 799 { 800 u_long addr, mask = 0; 801 char *cp; 802 803 rtm_addrs |= RTA_NETMASK; 804 /* 805 * XXX: This approach unable to handle 0.0.0.1/32 correctly 806 * as inet_network() converts 0.0.0.1 and 1 equally. 807 */ 808 if (net <= 0xff) 809 addr = net << IN_CLASSA_NSHIFT; 810 else if (net <= 0xffff) 811 addr = net << IN_CLASSB_NSHIFT; 812 else if (net <= 0xffffff) 813 addr = net << IN_CLASSC_NSHIFT; 814 else 815 addr = net; 816 /* 817 * If no /xx was specified we must cacluate the 818 * CIDR address. 819 */ 820 if ((bits == 0) && (addr != 0)) { 821 u_long i, j; 822 for(i=0,j=0xff; i<4; i++) { 823 if (addr & j) { 824 break; 825 } 826 j <<= 8; 827 } 828 /* i holds the first non zero bit */ 829 bits = 32 - (i*8); 830 } 831 if (bits != 0) 832 mask = 0xffffffff << (32 - bits); 833 834 sin->sin_addr.s_addr = htonl(addr); 835 sin = &so_mask.sin; 836 sin->sin_addr.s_addr = htonl(mask); 837 sin->sin_len = 0; 838 sin->sin_family = 0; 839 cp = (char *)(&sin->sin_addr + 1); 840 while (*--cp == 0 && cp > (char *)sin) 841 ; 842 sin->sin_len = 1 + cp - (char *)sin; 843 } 844 845 #ifdef INET6 846 /* 847 * XXX the function may need more improvement... 848 */ 849 static int 850 inet6_makenetandmask(sin6, plen) 851 struct sockaddr_in6 *sin6; 852 char *plen; 853 { 854 struct in6_addr in6; 855 856 if (!plen) { 857 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 858 sin6->sin6_scope_id == 0) { 859 plen = "0"; 860 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 861 /* aggregatable global unicast - RFC2374 */ 862 memset(&in6, 0, sizeof(in6)); 863 if (!memcmp(&sin6->sin6_addr.s6_addr[8], 864 &in6.s6_addr[8], 8)) 865 plen = "64"; 866 } 867 } 868 869 if (!plen || strcmp(plen, "128") == 0) 870 return 1; 871 rtm_addrs |= RTA_NETMASK; 872 (void)prefixlen(plen); 873 return 0; 874 } 875 #endif 876 877 /* 878 * Interpret an argument as a network address of some kind, 879 * returning 1 if a host address, 0 if a network address. 880 */ 881 int 882 getaddr(which, s, hpp) 883 int which; 884 char *s; 885 struct hostent **hpp; 886 { 887 sup su; 888 struct hostent *hp; 889 struct netent *np; 890 u_long val; 891 char *q; 892 int afamily; /* local copy of af so we can change it */ 893 894 if (af == 0) { 895 af = AF_INET; 896 aflen = sizeof(struct sockaddr_in); 897 } 898 afamily = af; 899 rtm_addrs |= which; 900 switch (which) { 901 case RTA_DST: 902 su = &so_dst; 903 break; 904 case RTA_GATEWAY: 905 su = &so_gate; 906 if (iflag) { 907 struct ifaddrs *ifap, *ifa; 908 struct sockaddr_dl *sdl = NULL; 909 910 if (getifaddrs(&ifap)) 911 err(1, "getifaddrs"); 912 913 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 914 if (ifa->ifa_addr->sa_family != AF_LINK) 915 continue; 916 917 if (strcmp(s, ifa->ifa_name)) 918 continue; 919 920 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 921 } 922 /* If we found it, then use it */ 923 if (sdl) { 924 /* 925 * Copy is safe since we have a 926 * sockaddr_storage member in sockunion{}. 927 * Note that we need to copy before calling 928 * freeifaddrs(). 929 */ 930 memcpy(&su->sdl, sdl, sdl->sdl_len); 931 } 932 freeifaddrs(ifap); 933 if (sdl) 934 return(1); 935 } 936 break; 937 case RTA_NETMASK: 938 su = &so_mask; 939 break; 940 case RTA_GENMASK: 941 su = &so_genmask; 942 break; 943 case RTA_IFP: 944 su = &so_ifp; 945 afamily = AF_LINK; 946 break; 947 case RTA_IFA: 948 su = &so_ifa; 949 break; 950 default: 951 usage("internal error"); 952 /*NOTREACHED*/ 953 } 954 su->sa.sa_len = aflen; 955 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 956 if (strcmp(s, "default") == 0) { 957 /* 958 * Default is net 0.0.0.0/0 959 */ 960 switch (which) { 961 case RTA_DST: 962 forcenet++; 963 #if 0 964 bzero(su, sizeof(*su)); /* for readability */ 965 #endif 966 (void) getaddr(RTA_NETMASK, s, 0); 967 break; 968 #if 0 969 case RTA_NETMASK: 970 case RTA_GENMASK: 971 bzero(su, sizeof(*su)); /* for readability */ 972 #endif 973 } 974 return (0); 975 } 976 switch (afamily) { 977 #ifdef INET6 978 case AF_INET6: 979 { 980 struct addrinfo hints, *res; 981 int ecode; 982 983 q = NULL; 984 if (which == RTA_DST && (q = strchr(s, '/')) != NULL) 985 *q = '\0'; 986 memset(&hints, 0, sizeof(hints)); 987 hints.ai_family = afamily; /*AF_INET6*/ 988 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 989 ecode = getaddrinfo(s, NULL, &hints, &res); 990 if (ecode != 0 || res->ai_family != AF_INET6 || 991 res->ai_addrlen != sizeof(su->sin6)) { 992 (void) fprintf(stderr, "%s: %s\n", s, 993 gai_strerror(ecode)); 994 exit(1); 995 } 996 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 997 #ifdef __KAME__ 998 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 999 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1000 su->sin6.sin6_scope_id) { 1001 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1002 htons(su->sin6.sin6_scope_id); 1003 su->sin6.sin6_scope_id = 0; 1004 } 1005 #endif 1006 freeaddrinfo(res); 1007 if (q != NULL) 1008 *q++ = '/'; 1009 if (which == RTA_DST) 1010 return (inet6_makenetandmask(&su->sin6, q)); 1011 return (0); 1012 } 1013 #endif /* INET6 */ 1014 1015 case AF_APPLETALK: 1016 if (!atalk_aton(s, &su->sat.sat_addr)) 1017 errx(EX_NOHOST, "bad address: %s", s); 1018 rtm_addrs |= RTA_NETMASK; 1019 return(forcehost || su->sat.sat_addr.s_node != 0); 1020 1021 case AF_LINK: 1022 link_addr(s, &su->sdl); 1023 return (1); 1024 1025 1026 case PF_ROUTE: 1027 su->sa.sa_len = sizeof(*su); 1028 sockaddr(s, &su->sa); 1029 return (1); 1030 1031 case AF_INET: 1032 default: 1033 break; 1034 } 1035 1036 if (hpp == NULL) 1037 hpp = &hp; 1038 *hpp = NULL; 1039 1040 q = strchr(s,'/'); 1041 if (q && which == RTA_DST) { 1042 *q = '\0'; 1043 if ((val = inet_network(s)) != INADDR_NONE) { 1044 inet_makenetandmask( 1045 val, &su->sin, strtoul(q+1, 0, 0)); 1046 return (0); 1047 } 1048 *q = '/'; 1049 } 1050 if ((which != RTA_DST || forcenet == 0) && 1051 inet_aton(s, &su->sin.sin_addr)) { 1052 val = su->sin.sin_addr.s_addr; 1053 if (which != RTA_DST || forcehost || 1054 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1055 return (1); 1056 else { 1057 val = ntohl(val); 1058 goto netdone; 1059 } 1060 } 1061 if (which == RTA_DST && forcehost == 0 && 1062 ((val = inet_network(s)) != INADDR_NONE || 1063 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) { 1064 netdone: 1065 inet_makenetandmask(val, &su->sin, 0); 1066 return (0); 1067 } 1068 hp = gethostbyname(s); 1069 if (hp) { 1070 *hpp = hp; 1071 su->sin.sin_family = hp->h_addrtype; 1072 memmove((char *)&su->sin.sin_addr, hp->h_addr, 1073 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1074 return (1); 1075 } 1076 errx(EX_NOHOST, "bad address: %s", s); 1077 } 1078 1079 int 1080 prefixlen(s) 1081 char *s; 1082 { 1083 int len = atoi(s), q, r; 1084 int max; 1085 char *p; 1086 1087 rtm_addrs |= RTA_NETMASK; 1088 switch (af) { 1089 #ifdef INET6 1090 case AF_INET6: 1091 max = 128; 1092 p = (char *)&so_mask.sin6.sin6_addr; 1093 break; 1094 #endif 1095 case AF_INET: 1096 max = 32; 1097 p = (char *)&so_mask.sin.sin_addr; 1098 break; 1099 default: 1100 (void) fprintf(stderr, "prefixlen not supported in this af\n"); 1101 exit(1); 1102 /*NOTREACHED*/ 1103 } 1104 1105 if (len < 0 || max < len) { 1106 (void) fprintf(stderr, "%s: bad value\n", s); 1107 exit(1); 1108 } 1109 1110 q = len >> 3; 1111 r = len & 7; 1112 so_mask.sa.sa_family = af; 1113 so_mask.sa.sa_len = aflen; 1114 memset((void *)p, 0, max / 8); 1115 if (q > 0) 1116 memset((void *)p, 0xff, q); 1117 if (r > 0) 1118 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1119 if (len == max) 1120 return -1; 1121 else 1122 return len; 1123 } 1124 1125 void 1126 interfaces() 1127 { 1128 size_t needed; 1129 int mib[6]; 1130 char *buf, *lim, *next, count = 0; 1131 struct rt_msghdr *rtm; 1132 1133 retry2: 1134 mib[0] = CTL_NET; 1135 mib[1] = PF_ROUTE; 1136 mib[2] = 0; /* protocol */ 1137 mib[3] = 0; /* wildcard address family */ 1138 mib[4] = NET_RT_IFLIST; 1139 mib[5] = 0; /* no flags */ 1140 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1141 err(EX_OSERR, "route-sysctl-estimate"); 1142 if ((buf = malloc(needed)) == NULL) 1143 errx(EX_OSERR, "malloc failed"); 1144 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 1145 if (errno == ENOMEM && count++ < 10) { 1146 warnx("Routing table grew, retrying"); 1147 sleep(1); 1148 free(buf); 1149 goto retry2; 1150 } 1151 err(EX_OSERR, "actual retrieval of interface table"); 1152 } 1153 lim = buf + needed; 1154 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1155 rtm = (struct rt_msghdr *)next; 1156 print_rtmsg(rtm, rtm->rtm_msglen); 1157 } 1158 } 1159 1160 void 1161 monitor() 1162 { 1163 int n; 1164 char msg[2048]; 1165 1166 verbose = 1; 1167 if (debugonly) { 1168 interfaces(); 1169 exit(0); 1170 } 1171 for(;;) { 1172 time_t now; 1173 n = read(s, msg, 2048); 1174 now = time(NULL); 1175 (void) printf("\ngot message of size %d on %s", n, ctime(&now)); 1176 print_rtmsg((struct rt_msghdr *)msg, n); 1177 } 1178 } 1179 1180 struct { 1181 struct rt_msghdr m_rtm; 1182 char m_space[512]; 1183 } m_rtmsg; 1184 1185 int 1186 rtmsg(cmd, flags) 1187 int cmd, flags; 1188 { 1189 static int seq; 1190 int rlen; 1191 char *cp = m_rtmsg.m_space; 1192 int l; 1193 1194 #define NEXTADDR(w, u) \ 1195 if (rtm_addrs & (w)) {\ 1196 l = SA_SIZE(&(u.sa)); memmove(cp, &(u), l); cp += l;\ 1197 if (verbose) sodump(&(u),#u);\ 1198 } 1199 1200 errno = 0; 1201 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1202 if (cmd == 'a') 1203 cmd = RTM_ADD; 1204 else if (cmd == 'c') 1205 cmd = RTM_CHANGE; 1206 else if (cmd == 'g' || cmd == 's') { 1207 cmd = RTM_GET; 1208 if (so_ifp.sa.sa_family == 0) { 1209 so_ifp.sa.sa_family = AF_LINK; 1210 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1211 rtm_addrs |= RTA_IFP; 1212 } 1213 } else 1214 cmd = RTM_DELETE; 1215 #define rtm m_rtmsg.m_rtm 1216 rtm.rtm_type = cmd; 1217 rtm.rtm_flags = flags; 1218 rtm.rtm_version = RTM_VERSION; 1219 rtm.rtm_seq = ++seq; 1220 rtm.rtm_addrs = rtm_addrs; 1221 rtm.rtm_rmx = rt_metrics; 1222 rtm.rtm_inits = rtm_inits; 1223 1224 if (rtm_addrs & RTA_NETMASK) 1225 mask_addr(); 1226 NEXTADDR(RTA_DST, so_dst); 1227 NEXTADDR(RTA_GATEWAY, so_gate); 1228 NEXTADDR(RTA_NETMASK, so_mask); 1229 NEXTADDR(RTA_GENMASK, so_genmask); 1230 NEXTADDR(RTA_IFP, so_ifp); 1231 NEXTADDR(RTA_IFA, so_ifa); 1232 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1233 if (verbose) 1234 print_rtmsg(&rtm, l); 1235 if (debugonly) 1236 return (0); 1237 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1238 if (errno == EPERM) 1239 err(1, "writing to routing socket"); 1240 warn("writing to routing socket"); 1241 return (-1); 1242 } 1243 if (cmd == RTM_GET) { 1244 do { 1245 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1246 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1247 if (l < 0) 1248 warn("read from routing socket"); 1249 else 1250 print_getmsg(&rtm, l); 1251 } 1252 #undef rtm 1253 return (0); 1254 } 1255 1256 void 1257 mask_addr() 1258 { 1259 int olen = so_mask.sa.sa_len; 1260 char *cp1 = olen + (char *)&so_mask, *cp2; 1261 1262 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1263 if (*--cp1 != 0) { 1264 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1265 break; 1266 } 1267 if ((rtm_addrs & RTA_DST) == 0) 1268 return; 1269 switch (so_dst.sa.sa_family) { 1270 case AF_INET: 1271 #ifdef INET6 1272 case AF_INET6: 1273 #endif 1274 case AF_APPLETALK: 1275 case 0: 1276 return; 1277 } 1278 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1279 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1280 while (cp2 > cp1) 1281 *--cp2 = 0; 1282 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1283 while (cp1 > so_dst.sa.sa_data) 1284 *--cp1 &= *--cp2; 1285 } 1286 1287 char *msgtypes[] = { 1288 "", 1289 "RTM_ADD: Add Route", 1290 "RTM_DELETE: Delete Route", 1291 "RTM_CHANGE: Change Metrics or flags", 1292 "RTM_GET: Report Metrics", 1293 "RTM_LOSING: Kernel Suspects Partitioning", 1294 "RTM_REDIRECT: Told to use different route", 1295 "RTM_MISS: Lookup failed on this address", 1296 "RTM_LOCK: fix specified metrics", 1297 "RTM_OLDADD: caused by SIOCADDRT", 1298 "RTM_OLDDEL: caused by SIOCDELRT", 1299 "RTM_RESOLVE: Route created by cloning", 1300 "RTM_NEWADDR: address being added to iface", 1301 "RTM_DELADDR: address being removed from iface", 1302 "RTM_IFINFO: iface status change", 1303 "RTM_NEWMADDR: new multicast group membership on iface", 1304 "RTM_DELMADDR: multicast group membership removed from iface", 1305 "RTM_IFANNOUNCE: interface arrival/departure", 1306 0, 1307 }; 1308 1309 char metricnames[] = 1310 "\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire" 1311 "\1mtu"; 1312 char routeflags[] = 1313 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE" 1314 "\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE" 1315 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3" 1316 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY"; 1317 char ifnetflags[] = 1318 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1319 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1320 "\017LINK2\020MULTICAST"; 1321 char addrnames[] = 1322 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1323 1324 void 1325 print_rtmsg(rtm, msglen) 1326 struct rt_msghdr *rtm; 1327 int msglen; 1328 { 1329 struct if_msghdr *ifm; 1330 struct ifa_msghdr *ifam; 1331 #ifdef RTM_NEWMADDR 1332 struct ifma_msghdr *ifmam; 1333 #endif 1334 struct if_announcemsghdr *ifan; 1335 char *state; 1336 1337 if (verbose == 0) 1338 return; 1339 if (rtm->rtm_version != RTM_VERSION) { 1340 (void) printf("routing message version %d not understood\n", 1341 rtm->rtm_version); 1342 return; 1343 } 1344 if (msgtypes[rtm->rtm_type] != NULL) 1345 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1346 else 1347 (void)printf("#%d: ", rtm->rtm_type); 1348 (void)printf("len %d, ", rtm->rtm_msglen); 1349 switch (rtm->rtm_type) { 1350 case RTM_IFINFO: 1351 ifm = (struct if_msghdr *)rtm; 1352 (void) printf("if# %d, ", ifm->ifm_index); 1353 switch (ifm->ifm_data.ifi_link_state) { 1354 case LINK_STATE_DOWN: 1355 state = "down"; 1356 break; 1357 case LINK_STATE_UP: 1358 state = "up"; 1359 break; 1360 default: 1361 state = "unknown"; 1362 break; 1363 } 1364 (void) printf("link: %s, flags:", state); 1365 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1366 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1367 break; 1368 case RTM_NEWADDR: 1369 case RTM_DELADDR: 1370 ifam = (struct ifa_msghdr *)rtm; 1371 (void) printf("metric %d, flags:", ifam->ifam_metric); 1372 bprintf(stdout, ifam->ifam_flags, routeflags); 1373 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1374 break; 1375 #ifdef RTM_NEWMADDR 1376 case RTM_NEWMADDR: 1377 case RTM_DELMADDR: 1378 ifmam = (struct ifma_msghdr *)rtm; 1379 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1380 break; 1381 #endif 1382 case RTM_IFANNOUNCE: 1383 ifan = (struct if_announcemsghdr *)rtm; 1384 (void) printf("if# %d, what: ", ifan->ifan_index); 1385 switch (ifan->ifan_what) { 1386 case IFAN_ARRIVAL: 1387 printf("arrival"); 1388 break; 1389 case IFAN_DEPARTURE: 1390 printf("departure"); 1391 break; 1392 default: 1393 printf("#%d", ifan->ifan_what); 1394 break; 1395 } 1396 printf("\n"); 1397 break; 1398 1399 default: 1400 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1401 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1402 bprintf(stdout, rtm->rtm_flags, routeflags); 1403 pmsg_common(rtm); 1404 } 1405 } 1406 1407 void 1408 print_getmsg(rtm, msglen) 1409 struct rt_msghdr *rtm; 1410 int msglen; 1411 { 1412 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1413 struct sockaddr_dl *ifp = NULL; 1414 struct sockaddr *sa; 1415 char *cp; 1416 int i; 1417 1418 (void) printf(" route to: %s\n", routename(&so_dst)); 1419 if (rtm->rtm_version != RTM_VERSION) { 1420 warnx("routing message version %d not understood", 1421 rtm->rtm_version); 1422 return; 1423 } 1424 if (rtm->rtm_msglen > msglen) { 1425 warnx("message length mismatch, in packet %d, returned %d", 1426 rtm->rtm_msglen, msglen); 1427 } 1428 if (rtm->rtm_errno) { 1429 errno = rtm->rtm_errno; 1430 warn("message indicates error %d", errno); 1431 return; 1432 } 1433 cp = ((char *)(rtm + 1)); 1434 if (rtm->rtm_addrs) 1435 for (i = 1; i; i <<= 1) 1436 if (i & rtm->rtm_addrs) { 1437 sa = (struct sockaddr *)cp; 1438 switch (i) { 1439 case RTA_DST: 1440 dst = sa; 1441 break; 1442 case RTA_GATEWAY: 1443 gate = sa; 1444 break; 1445 case RTA_NETMASK: 1446 mask = sa; 1447 break; 1448 case RTA_IFP: 1449 if (sa->sa_family == AF_LINK && 1450 ((struct sockaddr_dl *)sa)->sdl_nlen) 1451 ifp = (struct sockaddr_dl *)sa; 1452 break; 1453 } 1454 cp += SA_SIZE(sa); 1455 } 1456 if (dst && mask) 1457 mask->sa_family = dst->sa_family; /* XXX */ 1458 if (dst) 1459 (void)printf("destination: %s\n", routename(dst)); 1460 if (mask) { 1461 int savenflag = nflag; 1462 1463 nflag = 1; 1464 (void)printf(" mask: %s\n", routename(mask)); 1465 nflag = savenflag; 1466 } 1467 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1468 (void)printf(" gateway: %s\n", routename(gate)); 1469 if (ifp) 1470 (void)printf(" interface: %.*s\n", 1471 ifp->sdl_nlen, ifp->sdl_data); 1472 (void)printf(" flags: "); 1473 bprintf(stdout, rtm->rtm_flags, routeflags); 1474 1475 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1476 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1477 1478 (void) printf("\n%s\n", "\ 1479 recvpipe sendpipe ssthresh rtt,msec mtu weight expire"); 1480 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1481 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1482 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1483 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1484 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1485 printf("%8ld%c ", rtm->rtm_rmx.rmx_weight, lock(WEIGHT)); 1486 if (rtm->rtm_rmx.rmx_expire) 1487 rtm->rtm_rmx.rmx_expire -= time(0); 1488 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1489 #undef lock 1490 #undef msec 1491 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1492 if (verbose) 1493 pmsg_common(rtm); 1494 else if (rtm->rtm_addrs &~ RTA_IGN) { 1495 (void) printf("sockaddrs: "); 1496 bprintf(stdout, rtm->rtm_addrs, addrnames); 1497 putchar('\n'); 1498 } 1499 #undef RTA_IGN 1500 } 1501 1502 void 1503 pmsg_common(rtm) 1504 struct rt_msghdr *rtm; 1505 { 1506 (void) printf("\nlocks: "); 1507 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1508 (void) printf(" inits: "); 1509 bprintf(stdout, rtm->rtm_inits, metricnames); 1510 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1511 } 1512 1513 void 1514 pmsg_addrs(cp, addrs) 1515 char *cp; 1516 int addrs; 1517 { 1518 struct sockaddr *sa; 1519 int i; 1520 1521 if (addrs == 0) { 1522 (void) putchar('\n'); 1523 return; 1524 } 1525 (void) printf("\nsockaddrs: "); 1526 bprintf(stdout, addrs, addrnames); 1527 (void) putchar('\n'); 1528 for (i = 1; i; i <<= 1) 1529 if (i & addrs) { 1530 sa = (struct sockaddr *)cp; 1531 (void) printf(" %s", routename(sa)); 1532 cp += SA_SIZE(sa); 1533 } 1534 (void) putchar('\n'); 1535 (void) fflush(stdout); 1536 } 1537 1538 void 1539 bprintf(fp, b, s) 1540 FILE *fp; 1541 int b; 1542 u_char *s; 1543 { 1544 int i; 1545 int gotsome = 0; 1546 1547 if (b == 0) 1548 return; 1549 while ((i = *s++) != 0) { 1550 if (b & (1 << (i-1))) { 1551 if (gotsome == 0) 1552 i = '<'; 1553 else 1554 i = ','; 1555 (void) putc(i, fp); 1556 gotsome = 1; 1557 for (; (i = *s) > 32; s++) 1558 (void) putc(i, fp); 1559 } else 1560 while (*s > 32) 1561 s++; 1562 } 1563 if (gotsome) 1564 (void) putc('>', fp); 1565 } 1566 1567 int 1568 keyword(cp) 1569 char *cp; 1570 { 1571 struct keytab *kt = keywords; 1572 1573 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1574 kt++; 1575 return kt->kt_i; 1576 } 1577 1578 void 1579 sodump(su, which) 1580 sup su; 1581 char *which; 1582 { 1583 switch (su->sa.sa_family) { 1584 case AF_LINK: 1585 (void) printf("%s: link %s; ", 1586 which, link_ntoa(&su->sdl)); 1587 break; 1588 case AF_INET: 1589 (void) printf("%s: inet %s; ", 1590 which, inet_ntoa(su->sin.sin_addr)); 1591 break; 1592 case AF_APPLETALK: 1593 (void) printf("%s: atalk %s; ", 1594 which, atalk_ntoa(su->sat.sat_addr)); 1595 break; 1596 } 1597 (void) fflush(stdout); 1598 } 1599 1600 /* States*/ 1601 #define VIRGIN 0 1602 #define GOTONE 1 1603 #define GOTTWO 2 1604 /* Inputs */ 1605 #define DIGIT (4*0) 1606 #define END (4*1) 1607 #define DELIM (4*2) 1608 1609 void 1610 sockaddr(addr, sa) 1611 char *addr; 1612 struct sockaddr *sa; 1613 { 1614 char *cp = (char *)sa; 1615 int size = sa->sa_len; 1616 char *cplim = cp + size; 1617 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1618 1619 memset(cp, 0, size); 1620 cp++; 1621 do { 1622 if ((*addr >= '0') && (*addr <= '9')) { 1623 new = *addr - '0'; 1624 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1625 new = *addr - 'a' + 10; 1626 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1627 new = *addr - 'A' + 10; 1628 } else if (*addr == 0) 1629 state |= END; 1630 else 1631 state |= DELIM; 1632 addr++; 1633 switch (state /* | INPUT */) { 1634 case GOTTWO | DIGIT: 1635 *cp++ = byte; /*FALLTHROUGH*/ 1636 case VIRGIN | DIGIT: 1637 state = GOTONE; byte = new; continue; 1638 case GOTONE | DIGIT: 1639 state = GOTTWO; byte = new + (byte << 4); continue; 1640 default: /* | DELIM */ 1641 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1642 case GOTONE | END: 1643 case GOTTWO | END: 1644 *cp++ = byte; /* FALLTHROUGH */ 1645 case VIRGIN | END: 1646 break; 1647 } 1648 break; 1649 } while (cp < cplim); 1650 sa->sa_len = cp - (char *)sa; 1651 } 1652 1653 int 1654 atalk_aton(const char *text, struct at_addr *addr) 1655 { 1656 u_int net, node; 1657 1658 if (sscanf(text, "%u.%u", &net, &node) != 2 1659 || net > 0xffff || node > 0xff) 1660 return(0); 1661 addr->s_net = htons(net); 1662 addr->s_node = node; 1663 return(1); 1664 } 1665 1666 char * 1667 atalk_ntoa(struct at_addr at) 1668 { 1669 static char buf[20]; 1670 1671 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1672 return(buf); 1673 } 1674