route.c revision 1.47
1 /* $NetBSD: route.c,v 1.47 2001/07/20 08:28:25 itojun 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1991, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)route.c 8.6 (Berkeley) 4/28/95"; 45 #else 46 __RCSID("$NetBSD: route.c,v 1.47 2001/07/20 08:28:25 itojun Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/file.h> 52 #include <sys/socket.h> 53 #include <sys/ioctl.h> 54 #include <sys/mbuf.h> 55 #include <sys/sysctl.h> 56 57 #include <net/if.h> 58 #include <net/route.h> 59 #include <net/if_dl.h> 60 #include <netinet/in.h> 61 #include <netatalk/at.h> 62 #include <netns/ns.h> 63 #include <netiso/iso.h> 64 #include <netccitt/x25.h> 65 #include <arpa/inet.h> 66 #include <netdb.h> 67 68 #include <errno.h> 69 #include <unistd.h> 70 #include <stdio.h> 71 #include <ctype.h> 72 #include <stdlib.h> 73 #include <string.h> 74 #include <time.h> 75 #include <paths.h> 76 #include <err.h> 77 78 #include "keywords.h" 79 #include "extern.h" 80 81 typedef union sockunion *sup; 82 83 int main __P((int, char **)); 84 static void usage __P((char *)); 85 static char *any_ntoa __P((const struct sockaddr *)); 86 static void set_metric __P((char *, int)); 87 static void newroute __P((int, char **)); 88 static void inet_makenetandmask __P((u_int32_t, struct sockaddr_in *)); 89 #ifdef INET6 90 static void inet6_makenetandmask __P((struct sockaddr_in6 *)); 91 #endif 92 static int getaddr __P((int, char *, struct hostent **)); 93 static void flushroutes __P((int, char *[])); 94 #ifndef SMALL 95 static int prefixlen __P((char *)); 96 static int x25_makemask __P((void)); 97 static void interfaces __P((void)); 98 static void monitor __P((void)); 99 static void print_getmsg __P((struct rt_msghdr *, int)); 100 #endif 101 static int rtmsg __P((int, int )); 102 static void mask_addr __P((void)); 103 static void print_rtmsg __P((struct rt_msghdr *, int)); 104 static void pmsg_common __P((struct rt_msghdr *)); 105 static void pmsg_addrs __P((char *, int)); 106 static void bprintf __P((FILE *, int, u_char *)); 107 static int keyword __P((char *)); 108 static void sodump __P((sup, char *)); 109 static void sockaddr __P((char *, struct sockaddr *)); 110 111 union sockunion { 112 struct sockaddr sa; 113 struct sockaddr_in sin; 114 #ifdef INET6 115 struct sockaddr_in6 sin6; 116 #endif 117 struct sockaddr_at sat; 118 struct sockaddr_dl sdl; 119 #ifndef SMALL 120 struct sockaddr_ns sns; 121 struct sockaddr_iso siso; 122 struct sockaddr_x25 sx25; 123 #endif /* SMALL */ 124 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 125 126 int pid, rtm_addrs; 127 int s; 128 int forcehost, forcenet, doflush, nflag, af, qflag, tflag; 129 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 130 int locking, lockrest, debugonly; 131 struct rt_metrics rt_metrics; 132 u_int32_t rtm_inits; 133 short ns_nullh[] = {0,0,0}; 134 short ns_bh[] = {-1,-1,-1}; 135 136 137 static void 138 usage(cp) 139 char *cp; 140 { 141 142 if (cp) 143 warnx("botched keyword: %s", cp); 144 (void) fprintf(stderr, 145 "Usage: %s [ -fnqv ] cmd [[ -<qualifers> ] args ]\n", 146 getprogname()); 147 exit(1); 148 /* NOTREACHED */ 149 } 150 151 #define ROUNDUP(a) \ 152 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 153 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 154 155 int 156 main(argc, argv) 157 int argc; 158 char **argv; 159 { 160 int ch; 161 162 if (argc < 2) 163 usage(NULL); 164 165 while ((ch = getopt(argc, argv, "fnqvdt")) != -1) 166 switch(ch) { 167 case 'f': 168 doflush = 1; 169 break; 170 case 'n': 171 nflag = 1; 172 break; 173 case 'q': 174 qflag = 1; 175 break; 176 case 'v': 177 verbose = 1; 178 break; 179 case 't': 180 tflag = 1; 181 break; 182 case 'd': 183 debugonly = 1; 184 break; 185 case '?': 186 default: 187 usage(NULL); 188 } 189 argc -= optind; 190 argv += optind; 191 192 pid = getpid(); 193 if (tflag) 194 s = open("/dev/null", O_WRONLY, 0); 195 else 196 s = socket(PF_ROUTE, SOCK_RAW, 0); 197 if (s < 0) 198 err(1, "socket"); 199 200 if (*argv == NULL) { 201 if (doflush) 202 ch = K_FLUSH; 203 else 204 goto no_cmd; 205 } else 206 ch = keyword(*argv); 207 208 switch (ch) { 209 210 #ifndef SMALL 211 case K_GET: 212 #endif /* SMALL */ 213 case K_CHANGE: 214 case K_ADD: 215 case K_DELETE: 216 if (doflush) 217 flushroutes(1, argv); 218 newroute(argc, argv); 219 break; 220 221 case K_SHOW: 222 show(argc, argv); 223 break; 224 225 #ifndef SMALL 226 case K_MONITOR: 227 monitor(); 228 break; 229 230 #endif /* SMALL */ 231 case K_FLUSH: 232 flushroutes(argc, argv); 233 break; 234 235 no_cmd: 236 default: 237 usage(*argv); 238 return 1; 239 } 240 return 0; 241 } 242 243 /* 244 * Purge all entries in the routing tables not 245 * associated with network interfaces. 246 */ 247 static void 248 flushroutes(argc, argv) 249 int argc; 250 char *argv[]; 251 { 252 size_t needed; 253 int mib[6], rlen, seqno; 254 char *buf, *next, *lim; 255 struct rt_msghdr *rtm; 256 257 af = 0; 258 shutdown(s, 0); /* Don't want to read back our messages */ 259 if (argc > 1) { 260 argv++; 261 if (argc == 2 && **argv == '-') 262 switch (keyword(*argv + 1)) { 263 case K_INET: 264 af = AF_INET; 265 break; 266 #ifdef INET6 267 case K_INET6: 268 af = AF_INET6; 269 break; 270 #endif 271 case K_ATALK: 272 af = AF_APPLETALK; 273 break; 274 #ifndef SMALL 275 case K_XNS: 276 af = AF_NS; 277 break; 278 #endif /* SMALL */ 279 case K_LINK: 280 af = AF_LINK; 281 break; 282 #ifndef SMALL 283 case K_ISO: 284 case K_OSI: 285 af = AF_ISO; 286 break; 287 case K_X25: 288 af = AF_CCITT; 289 #endif /* SMALL */ 290 default: 291 goto bad; 292 } else 293 bad: usage(*argv); 294 } 295 mib[0] = CTL_NET; 296 mib[1] = PF_ROUTE; 297 mib[2] = 0; /* protocol */ 298 mib[3] = 0; /* wildcard address family */ 299 mib[4] = NET_RT_DUMP; 300 mib[5] = 0; /* no flags */ 301 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 302 err(1, "route-sysctl-estimate"); 303 if (needed == 0) 304 return; 305 if ((buf = malloc(needed)) == NULL) 306 err(1, "malloc"); 307 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 308 err(1, "actual retrieval of routing table"); 309 lim = buf + needed; 310 if (verbose) { 311 (void) printf("Examining routing table from sysctl\n"); 312 if (af) printf("(address family %s)\n", (*argv + 1)); 313 } 314 seqno = 0; /* ??? */ 315 for (next = buf; next < lim; next += rtm->rtm_msglen) { 316 rtm = (struct rt_msghdr *)next; 317 if (verbose) 318 print_rtmsg(rtm, rtm->rtm_msglen); 319 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 320 continue; 321 if (af) { 322 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 323 324 if (sa->sa_family != af) 325 continue; 326 } 327 if (debugonly) 328 continue; 329 rtm->rtm_type = RTM_DELETE; 330 rtm->rtm_seq = seqno; 331 rlen = write(s, next, rtm->rtm_msglen); 332 if (rlen < (int)rtm->rtm_msglen) { 333 warn("write to routing socket, got %d for rlen", rlen); 334 break; 335 } 336 seqno++; 337 if (qflag) 338 continue; 339 if (verbose) 340 print_rtmsg(rtm, rlen); 341 else { 342 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 343 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 344 routename(sa) : netname(sa)); 345 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 346 (void) printf("%-20.20s ", routename(sa)); 347 (void) printf("done\n"); 348 } 349 } 350 } 351 352 353 static char hexlist[] = "0123456789abcdef"; 354 355 static char * 356 any_ntoa(sa) 357 const struct sockaddr *sa; 358 { 359 static char obuf[64]; 360 const char *in; 361 char *out; 362 int len; 363 364 len = sa->sa_len; 365 in = sa->sa_data; 366 out = obuf; 367 368 do { 369 *out++ = hexlist[(*in >> 4) & 15]; 370 *out++ = hexlist[(*in++) & 15]; 371 *out++ = '.'; 372 } while (--len > 0); 373 out[-1] = '\0'; 374 return obuf; 375 } 376 377 378 char * 379 routename(sa) 380 struct sockaddr *sa; 381 { 382 char *cp; 383 static char line[50]; 384 struct hostent *hp; 385 static char domain[MAXHOSTNAMELEN + 1]; 386 static int first = 1; 387 struct in_addr in; 388 389 if (first) { 390 first = 0; 391 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 392 (cp = strchr(domain, '.'))) { 393 (void)strncpy(domain, cp + 1, sizeof(domain) - 1); 394 domain[sizeof(domain) - 1] = '\0'; 395 } else 396 domain[0] = 0; 397 } 398 399 if (sa->sa_len == 0) { 400 strncpy(line, "default", sizeof(line) - 1); 401 line[sizeof(line) - 1] = '\0'; 402 } else switch (sa->sa_family) { 403 404 case AF_INET: 405 in = ((struct sockaddr_in *)sa)->sin_addr; 406 407 cp = 0; 408 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 409 cp = "default"; 410 if (cp == 0 && !nflag) { 411 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 412 AF_INET); 413 if (hp) { 414 if ((cp = strchr(hp->h_name, '.')) && 415 !strcmp(cp + 1, domain)) 416 *cp = 0; 417 cp = hp->h_name; 418 } 419 } 420 if (cp) 421 (void)strncpy(line, cp, sizeof(line) - 1); 422 else 423 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 424 line[sizeof(line) - 1] = '\0'; 425 break; 426 427 case AF_LINK: 428 return (link_ntoa((struct sockaddr_dl *)sa)); 429 430 #ifndef SMALL 431 #ifdef INET6 432 case AF_INET6: 433 { 434 struct sockaddr_in6 sin6; 435 int niflags; 436 437 #ifdef NI_WITHSCOPEID 438 niflags = NI_WITHSCOPEID; 439 #else 440 niflags = 0; 441 #endif 442 if (nflag) 443 niflags |= NI_NUMERICHOST; 444 memset(&sin6, 0, sizeof(sin6)); 445 memcpy(&sin6, sa, sa->sa_len); 446 sin6.sin6_len = sizeof(struct sockaddr_in6); 447 sin6.sin6_family = AF_INET6; 448 #ifdef __KAME__ 449 if (sa->sa_len == sizeof(struct sockaddr_in6) && 450 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 451 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 452 sin6.sin6_scope_id == 0) { 453 sin6.sin6_scope_id = 454 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 455 sin6.sin6_addr.s6_addr[2] = 0; 456 sin6.sin6_addr.s6_addr[3] = 0; 457 } 458 #endif 459 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 460 line, sizeof(line), NULL, 0, niflags) != 0) 461 strncpy(line, "invalid", sizeof(line)); 462 break; 463 } 464 #endif 465 466 case AF_NS: 467 return (ns_print((struct sockaddr_ns *)sa)); 468 469 case AF_ISO: 470 (void)snprintf(line, sizeof line, "iso %s", 471 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 472 break; 473 #endif /* SMALL */ 474 475 case AF_APPLETALK: 476 (void) snprintf(line, sizeof(line), "atalk %d.%d", 477 ((struct sockaddr_at *)sa)->sat_addr.s_net, 478 ((struct sockaddr_at *)sa)->sat_addr.s_node); 479 break; 480 481 default: 482 (void)snprintf(line, sizeof line, "(%d) %s", 483 sa->sa_family, any_ntoa(sa)); 484 break; 485 486 } 487 return (line); 488 } 489 490 /* 491 * Return the name of the network whose address is given. 492 * The address is assumed to be that of a net or subnet, not a host. 493 */ 494 char * 495 netname(sa) 496 struct sockaddr *sa; 497 { 498 char *cp = 0; 499 static char line[50]; 500 struct netent *np = 0; 501 u_int32_t net, mask; 502 u_int32_t i; 503 int subnetshift; 504 struct in_addr in; 505 506 switch (sa->sa_family) { 507 508 case AF_INET: 509 in = ((struct sockaddr_in *)sa)->sin_addr; 510 i = ntohl(in.s_addr); 511 if (i == 0) 512 cp = "default"; 513 else if (!nflag) { 514 if (IN_CLASSA(i)) { 515 mask = IN_CLASSA_NET; 516 subnetshift = 8; 517 } else if (IN_CLASSB(i)) { 518 mask = IN_CLASSB_NET; 519 subnetshift = 8; 520 } else { 521 mask = IN_CLASSC_NET; 522 subnetshift = 4; 523 } 524 /* 525 * If there are more bits than the standard mask 526 * would suggest, subnets must be in use. 527 * Guess at the subnet mask, assuming reasonable 528 * width subnet fields. 529 */ 530 while (i &~ mask) 531 mask = (int32_t)mask >> subnetshift; 532 net = i & mask; 533 while ((mask & 1) == 0) 534 mask >>= 1, net >>= 1; 535 np = getnetbyaddr(net, AF_INET); 536 if (np) 537 cp = np->n_name; 538 } 539 if (cp) { 540 (void)strncpy(line, cp, sizeof(line) - 1); 541 line[sizeof(line) - 1] = '\0'; 542 } else { 543 #if 0 /* XXX - This is silly... */ 544 #define C(x) ((x) & 0xff) 545 if ((i & 0xffffff) == 0) 546 (void)snprintf(line, sizeof line, "%u", 547 C(i >> 24)); 548 else if ((i & 0xffff) == 0) 549 (void)snprintf(line, sizeof line, "%u.%u", 550 C(i >> 24), C(i >> 16)); 551 else if ((i & 0xff) == 0) 552 (void)snprintf(line, sizeof line, "%u.%u.%u", 553 C(i >> 24), C(i >> 16), C(i >> 8)); 554 else 555 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 556 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 557 #undef C 558 #else /* XXX */ 559 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 560 #endif /* XXX */ 561 } 562 break; 563 564 case AF_LINK: 565 return (link_ntoa((struct sockaddr_dl *)sa)); 566 567 #ifndef SMALL 568 #ifdef INET6 569 case AF_INET6: 570 { 571 struct sockaddr_in6 sin6; 572 int niflags; 573 574 #ifdef NI_WITHSCOPEID 575 niflags = NI_WITHSCOPEID; 576 #else 577 niflags = 0; 578 #endif 579 if (nflag) 580 niflags |= NI_NUMERICHOST; 581 memset(&sin6, 0, sizeof(sin6)); 582 memcpy(&sin6, sa, sa->sa_len); 583 sin6.sin6_len = sizeof(struct sockaddr_in6); 584 sin6.sin6_family = AF_INET6; 585 #ifdef __KAME__ 586 if (sa->sa_len == sizeof(struct sockaddr_in6) && 587 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 588 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 589 sin6.sin6_scope_id == 0) { 590 sin6.sin6_scope_id = 591 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 592 sin6.sin6_addr.s6_addr[2] = 0; 593 sin6.sin6_addr.s6_addr[3] = 0; 594 } 595 #endif 596 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 597 line, sizeof(line), NULL, 0, niflags) != 0) 598 strncpy(line, "invalid", sizeof(line)); 599 break; 600 } 601 #endif 602 603 case AF_NS: 604 return (ns_print((struct sockaddr_ns *)sa)); 605 606 case AF_ISO: 607 (void)snprintf(line, sizeof line, "iso %s", 608 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 609 break; 610 #endif /* SMALL */ 611 612 case AF_APPLETALK: 613 (void) snprintf(line, sizeof(line), "atalk %d.%d", 614 ((struct sockaddr_at *)sa)->sat_addr.s_net, 615 ((struct sockaddr_at *)sa)->sat_addr.s_node); 616 break; 617 618 default: 619 (void)snprintf(line, sizeof line, "af %d: %s", 620 sa->sa_family, any_ntoa(sa)); 621 break; 622 } 623 return (line); 624 } 625 626 static void 627 set_metric(value, key) 628 char *value; 629 int key; 630 { 631 int flag = 0; 632 u_long noval, *valp = &noval; 633 634 switch (key) { 635 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 636 caseof(K_MTU, RTV_MTU, rmx_mtu); 637 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 638 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 639 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 640 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 641 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 642 caseof(K_RTT, RTV_RTT, rmx_rtt); 643 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 644 } 645 rtm_inits |= flag; 646 if (lockrest || locking) 647 rt_metrics.rmx_locks |= flag; 648 if (locking) 649 locking = 0; 650 *valp = atoi(value); 651 } 652 653 static void 654 newroute(argc, argv) 655 int argc; 656 char **argv; 657 { 658 char *cmd, *dest = "", *gateway = ""; 659 const char *err; 660 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 661 int key; 662 struct hostent *hp = 0; 663 664 cmd = argv[0]; 665 af = 0; 666 if (*cmd != 'g') 667 shutdown(s, 0); /* Don't want to read back our messages */ 668 while (--argc > 0) { 669 if (**(++argv)== '-') { 670 switch (key = keyword(1 + *argv)) { 671 672 case K_SA: 673 af = PF_ROUTE; 674 aflen = sizeof(union sockunion); 675 break; 676 677 case K_ATALK: 678 af = AF_APPLETALK; 679 aflen = sizeof(struct sockaddr_at); 680 break; 681 682 case K_INET: 683 af = AF_INET; 684 aflen = sizeof(struct sockaddr_in); 685 break; 686 687 #ifdef INET6 688 case K_INET6: 689 af = AF_INET6; 690 aflen = sizeof(struct sockaddr_in6); 691 break; 692 #endif 693 694 case K_LINK: 695 af = AF_LINK; 696 aflen = sizeof(struct sockaddr_dl); 697 break; 698 699 #ifndef SMALL 700 case K_OSI: 701 case K_ISO: 702 af = AF_ISO; 703 aflen = sizeof(struct sockaddr_iso); 704 break; 705 706 case K_X25: 707 af = AF_CCITT; 708 aflen = sizeof(struct sockaddr_x25); 709 break; 710 711 case K_XNS: 712 af = AF_NS; 713 aflen = sizeof(struct sockaddr_ns); 714 break; 715 #endif /* SMALL */ 716 717 case K_IFACE: 718 case K_INTERFACE: 719 iflag++; 720 break; 721 case K_NOSTATIC: 722 flags &= ~RTF_STATIC; 723 break; 724 case K_LLINFO: 725 flags |= RTF_LLINFO; 726 break; 727 case K_LOCK: 728 locking = 1; 729 break; 730 case K_LOCKREST: 731 lockrest = 1; 732 break; 733 case K_HOST: 734 forcehost++; 735 break; 736 case K_REJECT: 737 flags |= RTF_REJECT; 738 break; 739 case K_BLACKHOLE: 740 flags |= RTF_BLACKHOLE; 741 break; 742 case K_CLONED: 743 flags |= RTF_CLONED; 744 break; 745 case K_PROTO1: 746 flags |= RTF_PROTO1; 747 break; 748 case K_PROTO2: 749 flags |= RTF_PROTO2; 750 break; 751 case K_CLONING: 752 flags |= RTF_CLONING; 753 break; 754 case K_XRESOLVE: 755 flags |= RTF_XRESOLVE; 756 break; 757 case K_STATIC: 758 flags |= RTF_STATIC; 759 break; 760 case K_IFA: 761 if (!--argc) 762 usage(1+*argv); 763 (void) getaddr(RTA_IFA, *++argv, 0); 764 break; 765 case K_IFP: 766 if (!--argc) 767 usage(1+*argv); 768 (void) getaddr(RTA_IFP, *++argv, 0); 769 break; 770 case K_GENMASK: 771 if (!--argc) 772 usage(1+*argv); 773 (void) getaddr(RTA_GENMASK, *++argv, 0); 774 break; 775 case K_GATEWAY: 776 if (!--argc) 777 usage(1+*argv); 778 (void) getaddr(RTA_GATEWAY, *++argv, 0); 779 break; 780 case K_DST: 781 if (!--argc) 782 usage(1+*argv); 783 ishost = getaddr(RTA_DST, *++argv, &hp); 784 dest = *argv; 785 break; 786 case K_NETMASK: 787 if (!--argc) 788 usage(1+*argv); 789 (void) getaddr(RTA_NETMASK, *++argv, 0); 790 /* FALLTHROUGH */ 791 case K_NET: 792 forcenet++; 793 break; 794 case K_PREFIXLEN: 795 argc--; 796 if (prefixlen(*++argv) == 128) { 797 forcenet = 0; 798 ishost = 1; 799 } else { 800 forcenet = 1; 801 ishost = 0; 802 } 803 break; 804 case K_MTU: 805 case K_HOPCOUNT: 806 case K_EXPIRE: 807 case K_RECVPIPE: 808 case K_SENDPIPE: 809 case K_SSTHRESH: 810 case K_RTT: 811 case K_RTTVAR: 812 if (!--argc) 813 usage(1+*argv); 814 set_metric(*++argv, key); 815 break; 816 default: 817 usage(1+*argv); 818 } 819 } else { 820 if ((rtm_addrs & RTA_DST) == 0) { 821 dest = *argv; 822 ishost = getaddr(RTA_DST, *argv, &hp); 823 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 824 gateway = *argv; 825 (void) getaddr(RTA_GATEWAY, *argv, &hp); 826 } else { 827 int ret = atoi(*argv); 828 829 if (ret == 0) { 830 if (!qflag && strcmp(*argv, "0") == 0) 831 warnx("%s, %s", 832 "old usage of trailing 0", 833 "assuming route to if"); 834 else 835 usage((char *)NULL); 836 iflag = 1; 837 continue; 838 } else if (ret > 0 && ret < 10) { 839 if (!qflag) { 840 warnx("%s, %s", 841 "old usage of trailing digit", 842 "assuming route via gateway"); 843 } 844 iflag = 0; 845 continue; 846 } 847 (void) getaddr(RTA_NETMASK, *argv, 0); 848 } 849 } 850 } 851 if (forcehost) 852 ishost = 1; 853 if (forcenet) 854 ishost = 0; 855 flags |= RTF_UP; 856 if (ishost) 857 flags |= RTF_HOST; 858 if (iflag == 0) 859 flags |= RTF_GATEWAY; 860 for (attempts = 1; ; attempts++) { 861 errno = 0; 862 if ((ret = rtmsg(*cmd, flags)) == 0) 863 break; 864 if (errno != ENETUNREACH && errno != ESRCH) 865 break; 866 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 867 hp->h_addr_list++; 868 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 869 hp->h_length); 870 } else 871 break; 872 } 873 if (*cmd == 'g') 874 exit(0); 875 oerrno = errno; 876 if (!qflag) { 877 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 878 if (*gateway) { 879 (void) printf(": gateway %s", gateway); 880 if (attempts > 1 && ret == 0 && af == AF_INET) 881 (void) printf(" (%s)", 882 inet_ntoa(so_gate.sin.sin_addr)); 883 } 884 if (ret == 0) 885 (void) printf("\n"); 886 } 887 if (ret != 0) { 888 switch (oerrno) { 889 case ESRCH: 890 err = "not in table"; 891 break; 892 case EBUSY: 893 err = "entry in use"; 894 break; 895 case ENOBUFS: 896 err = "routing table overflow"; 897 break; 898 default: 899 err = strerror(oerrno); 900 break; 901 } 902 (void) printf(": %s\n", err); 903 } 904 } 905 906 static void 907 inet_makenetandmask(net, sin) 908 u_int32_t net; 909 struct sockaddr_in *sin; 910 { 911 u_int32_t addr, mask = 0; 912 char *cp; 913 914 rtm_addrs |= RTA_NETMASK; 915 if (net == 0) 916 mask = addr = 0; 917 else if (net < 128) { 918 addr = net << IN_CLASSA_NSHIFT; 919 mask = IN_CLASSA_NET; 920 } else if (net < 65536) { 921 addr = net << IN_CLASSB_NSHIFT; 922 mask = IN_CLASSB_NET; 923 } else if (net < 16777216L) { 924 addr = net << IN_CLASSC_NSHIFT; 925 mask = IN_CLASSC_NET; 926 } else { 927 addr = net; 928 if ((addr & IN_CLASSA_HOST) == 0) 929 mask = IN_CLASSA_NET; 930 else if ((addr & IN_CLASSB_HOST) == 0) 931 mask = IN_CLASSB_NET; 932 else if ((addr & IN_CLASSC_HOST) == 0) 933 mask = IN_CLASSC_NET; 934 else 935 mask = -1; 936 } 937 sin->sin_addr.s_addr = htonl(addr); 938 sin = &so_mask.sin; 939 sin->sin_addr.s_addr = htonl(mask); 940 sin->sin_len = 0; 941 sin->sin_family = 0; 942 cp = (char *)(&sin->sin_addr + 1); 943 while (*--cp == 0 && cp > (char *)sin) 944 ; 945 sin->sin_len = 1 + cp - (char *)sin; 946 } 947 948 #ifdef INET6 949 /* 950 * XXX the function may need more improvement... 951 */ 952 static void 953 inet6_makenetandmask(sin6) 954 struct sockaddr_in6 *sin6; 955 { 956 char *plen; 957 struct in6_addr in6; 958 959 plen = NULL; 960 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 961 sin6->sin6_scope_id == 0) { 962 plen = "0"; 963 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 964 /* aggregatable global unicast - RFC2374 */ 965 memset(&in6, 0, sizeof(in6)); 966 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 967 plen = "64"; 968 else 969 plen = "128"; 970 } 971 972 if (plen) { 973 rtm_addrs |= RTA_NETMASK; 974 prefixlen(plen); 975 } 976 } 977 #endif 978 979 /* 980 * Interpret an argument as a network address of some kind, 981 * returning 1 if a host address, 0 if a network address. 982 */ 983 static int 984 getaddr(which, s, hpp) 985 int which; 986 char *s; 987 struct hostent **hpp; 988 { 989 sup su; 990 struct hostent *hp; 991 struct netent *np; 992 u_int32_t val; 993 char *t; 994 int afamily; /* local copy of af so we can change it */ 995 996 if (af == 0) { 997 af = AF_INET; 998 aflen = sizeof(struct sockaddr_in); 999 } 1000 afamily = af; 1001 rtm_addrs |= which; 1002 switch (which) { 1003 case RTA_DST: 1004 su = &so_dst; 1005 break; 1006 case RTA_GATEWAY: 1007 su = &so_gate; 1008 break; 1009 case RTA_NETMASK: 1010 su = &so_mask; 1011 break; 1012 case RTA_GENMASK: 1013 su = &so_genmask; 1014 break; 1015 case RTA_IFP: 1016 su = &so_ifp; 1017 afamily = AF_LINK; 1018 break; 1019 case RTA_IFA: 1020 su = &so_ifa; 1021 su->sa.sa_family = af; 1022 break; 1023 default: 1024 su = NULL; 1025 usage("Internal Error"); 1026 /*NOTREACHED*/ 1027 } 1028 su->sa.sa_len = aflen; 1029 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1030 if (strcmp(s, "default") == 0) { 1031 switch (which) { 1032 case RTA_DST: 1033 forcenet++; 1034 (void) getaddr(RTA_NETMASK, s, 0); 1035 break; 1036 case RTA_NETMASK: 1037 case RTA_GENMASK: 1038 su->sa.sa_len = 0; 1039 } 1040 return (0); 1041 } 1042 switch (afamily) { 1043 #ifndef SMALL 1044 #ifdef INET6 1045 case AF_INET6: 1046 { 1047 struct addrinfo hints, *res; 1048 1049 memset(&hints, 0, sizeof(hints)); 1050 hints.ai_family = afamily; /*AF_INET6*/ 1051 hints.ai_flags = AI_NUMERICHOST; 1052 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1053 if (getaddrinfo(s, "0", &hints, &res) != 0 || 1054 res->ai_family != AF_INET6 || 1055 res->ai_addrlen != sizeof(su->sin6)) { 1056 (void) fprintf(stderr, "%s: bad value\n", s); 1057 exit(1); 1058 } 1059 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1060 #ifdef __KAME__ 1061 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1062 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1063 su->sin6.sin6_scope_id) { 1064 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1065 htons(su->sin6.sin6_scope_id); 1066 su->sin6.sin6_scope_id = 0; 1067 } 1068 #endif 1069 if (which == RTA_DST) 1070 inet6_makenetandmask(&su->sin6); 1071 freeaddrinfo(res); 1072 return 0; 1073 } 1074 #endif 1075 1076 case AF_NS: 1077 if (which == RTA_DST) { 1078 struct sockaddr_ns *sms = &(so_mask.sns); 1079 memset(sms, 0, sizeof(*sms)); 1080 sms->sns_family = 0; 1081 sms->sns_len = 6; 1082 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1083 rtm_addrs |= RTA_NETMASK; 1084 } 1085 su->sns.sns_addr = ns_addr(s); 1086 return (!ns_nullhost(su->sns.sns_addr)); 1087 1088 case AF_OSI: 1089 su->siso.siso_addr = *iso_addr(s); 1090 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1091 char *cp = (char *)TSEL(&su->siso); 1092 su->siso.siso_nlen = 0; 1093 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1094 su->siso.siso_len = 1 + cp - (char *)su; 1095 } 1096 return (1); 1097 1098 case AF_CCITT: 1099 ccitt_addr(s, &su->sx25); 1100 return (which == RTA_DST ? x25_makemask() : 1); 1101 #endif /* SMALL */ 1102 1103 case PF_ROUTE: 1104 su->sa.sa_len = sizeof(*su); 1105 sockaddr(s, &su->sa); 1106 return (1); 1107 1108 case AF_APPLETALK: 1109 t = strchr (s, '.'); 1110 if (!t) { 1111 badataddr: 1112 errx(1, "bad address: %s", s); 1113 } 1114 val = atoi (s); 1115 if (val > 65535) 1116 goto badataddr; 1117 su->sat.sat_addr.s_net = val; 1118 val = atoi (t); 1119 if (val > 256) 1120 goto badataddr; 1121 su->sat.sat_addr.s_node = val; 1122 rtm_addrs |= RTA_NETMASK; 1123 return(forcehost || su->sat.sat_addr.s_node != 0); 1124 1125 case AF_LINK: 1126 link_addr(s, &su->sdl); 1127 return (1); 1128 1129 case AF_INET: 1130 default: 1131 break; 1132 } 1133 1134 if (hpp == NULL) 1135 hpp = &hp; 1136 *hpp = NULL; 1137 if (((val = inet_addr(s)) != INADDR_NONE) && 1138 (which != RTA_DST || forcenet == 0)) { 1139 su->sin.sin_addr.s_addr = val; 1140 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1141 return (1); 1142 else { 1143 val = ntohl(val); 1144 goto netdone; 1145 } 1146 } 1147 if ((val = inet_network(s)) != INADDR_NONE || 1148 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1149 netdone: 1150 if (which == RTA_DST) 1151 inet_makenetandmask(val, &su->sin); 1152 return (0); 1153 } 1154 hp = gethostbyname(s); 1155 if (hp) { 1156 *hpp = hp; 1157 su->sin.sin_family = hp->h_addrtype; 1158 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1159 return (1); 1160 } 1161 errx(1, "bad value: %s", s); 1162 } 1163 1164 int 1165 prefixlen(s) 1166 char *s; 1167 { 1168 int len = atoi(s), q, r; 1169 int max; 1170 1171 switch (af) { 1172 case AF_INET: 1173 max = sizeof(struct in_addr) * 8; 1174 break; 1175 #ifdef INET6 1176 case AF_INET6: 1177 max = sizeof(struct in6_addr) * 8; 1178 break; 1179 #endif 1180 default: 1181 (void) fprintf(stderr, 1182 "prefixlen is not supported with af %d\n", af); 1183 exit(1); 1184 } 1185 1186 rtm_addrs |= RTA_NETMASK; 1187 if (len < -1 || len > max + 1) { 1188 (void) fprintf(stderr, "%s: bad value\n", s); 1189 exit(1); 1190 } 1191 1192 q = len >> 3; 1193 r = len & 7; 1194 switch (af) { 1195 case AF_INET: 1196 memset(&so_mask, 0, sizeof(so_mask)); 1197 so_mask.sin.sin_family = AF_INET; 1198 so_mask.sin.sin_len = sizeof(struct sockaddr_in); 1199 so_mask.sin.sin_addr.s_addr = htonl(0xffffffff << (32 - len)); 1200 break; 1201 #ifdef INET6 1202 case AF_INET6: 1203 so_mask.sin6.sin6_family = AF_INET6; 1204 so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1205 memset((void *)&so_mask.sin6.sin6_addr, 0, 1206 sizeof(so_mask.sin6.sin6_addr)); 1207 if (q > 0) 1208 memset((void *)&so_mask.sin6.sin6_addr, 0xff, q); 1209 if (r > 0) 1210 *((u_char *)&so_mask.sin6.sin6_addr + q) = 1211 (0xff00 >> r) & 0xff; 1212 break; 1213 #endif 1214 } 1215 return(len); 1216 } 1217 1218 #ifndef SMALL 1219 int 1220 x25_makemask() 1221 { 1222 char *cp; 1223 1224 if ((rtm_addrs & RTA_NETMASK) == 0) { 1225 rtm_addrs |= RTA_NETMASK; 1226 for (cp = (char *)&so_mask.sx25.x25_net; 1227 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1228 *cp = -1; 1229 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1230 } 1231 return 0; 1232 } 1233 1234 1235 char * 1236 ns_print(sns) 1237 struct sockaddr_ns *sns; 1238 { 1239 struct ns_addr work; 1240 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1241 u_short port; 1242 static char mybuf[50], cport[10], chost[25]; 1243 char *host = ""; 1244 char *p; 1245 u_char *q; 1246 1247 work = sns->sns_addr; 1248 port = ntohs(work.x_port); 1249 work.x_port = 0; 1250 net.net_e = work.x_net; 1251 if (ns_nullhost(work) && net.int32_t_e == 0) { 1252 if (!port) 1253 return ("*.*"); 1254 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1255 return (mybuf); 1256 } 1257 1258 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1259 host = "any"; 1260 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1261 host = "*"; 1262 else { 1263 q = work.x_host.c_host; 1264 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1265 q[0], q[1], q[2], q[3], q[4], q[5]); 1266 for (p = chost; *p == '0' && p < chost + 12; p++) 1267 /* void */; 1268 host = p; 1269 } 1270 if (port) 1271 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1272 else 1273 *cport = 0; 1274 1275 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1276 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1277 return (mybuf); 1278 } 1279 1280 static void 1281 interfaces() 1282 { 1283 size_t needed; 1284 int mib[6]; 1285 char *buf, *lim, *next; 1286 struct rt_msghdr *rtm; 1287 1288 mib[0] = CTL_NET; 1289 mib[1] = PF_ROUTE; 1290 mib[2] = 0; /* protocol */ 1291 mib[3] = 0; /* wildcard address family */ 1292 mib[4] = NET_RT_IFLIST; 1293 mib[5] = 0; /* no flags */ 1294 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1295 err(1, "route-sysctl-estimate"); 1296 if ((buf = malloc(needed)) == NULL) 1297 err(1, "malloc"); 1298 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1299 err(1, "actual retrieval of interface table"); 1300 lim = buf + needed; 1301 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1302 rtm = (struct rt_msghdr *)next; 1303 print_rtmsg(rtm, rtm->rtm_msglen); 1304 } 1305 } 1306 1307 static void 1308 monitor() 1309 { 1310 int n; 1311 char msg[2048]; 1312 1313 verbose = 1; 1314 if (debugonly) { 1315 interfaces(); 1316 exit(0); 1317 } 1318 for(;;) { 1319 time_t now; 1320 n = read(s, msg, 2048); 1321 now = time(NULL); 1322 (void) printf("got message of size %d on %s", n, ctime(&now)); 1323 print_rtmsg((struct rt_msghdr *)msg, n); 1324 } 1325 } 1326 1327 #endif /* SMALL */ 1328 1329 1330 struct { 1331 struct rt_msghdr m_rtm; 1332 char m_space[512]; 1333 } m_rtmsg; 1334 1335 static int 1336 rtmsg(cmd, flags) 1337 int cmd, flags; 1338 { 1339 static int seq; 1340 int rlen; 1341 char *cp = m_rtmsg.m_space; 1342 int l; 1343 1344 #define NEXTADDR(w, u) \ 1345 if (rtm_addrs & (w)) {\ 1346 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1347 if (verbose) sodump(&(u),"u");\ 1348 } 1349 1350 errno = 0; 1351 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1352 if (cmd == 'a') 1353 cmd = RTM_ADD; 1354 else if (cmd == 'c') 1355 cmd = RTM_CHANGE; 1356 else if (cmd == 'g') { 1357 #ifdef SMALL 1358 return (-1); 1359 #else /* SMALL */ 1360 cmd = RTM_GET; 1361 if (so_ifp.sa.sa_family == 0) { 1362 so_ifp.sa.sa_family = AF_LINK; 1363 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1364 rtm_addrs |= RTA_IFP; 1365 } 1366 #endif /* SMALL */ 1367 } else 1368 cmd = RTM_DELETE; 1369 #define rtm m_rtmsg.m_rtm 1370 rtm.rtm_type = cmd; 1371 rtm.rtm_flags = flags; 1372 rtm.rtm_version = RTM_VERSION; 1373 rtm.rtm_seq = ++seq; 1374 rtm.rtm_addrs = rtm_addrs; 1375 rtm.rtm_rmx = rt_metrics; 1376 rtm.rtm_inits = rtm_inits; 1377 1378 if (rtm_addrs & RTA_NETMASK) 1379 mask_addr(); 1380 NEXTADDR(RTA_DST, so_dst); 1381 NEXTADDR(RTA_GATEWAY, so_gate); 1382 NEXTADDR(RTA_NETMASK, so_mask); 1383 NEXTADDR(RTA_GENMASK, so_genmask); 1384 NEXTADDR(RTA_IFP, so_ifp); 1385 NEXTADDR(RTA_IFA, so_ifa); 1386 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1387 if (verbose) 1388 print_rtmsg(&rtm, l); 1389 if (debugonly) 1390 return (0); 1391 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1392 perror("writing to routing socket"); 1393 return (-1); 1394 } 1395 #ifndef SMALL 1396 if (cmd == RTM_GET) { 1397 do { 1398 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1399 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1400 if (l < 0) 1401 err(1, "read from routing socket"); 1402 else 1403 print_getmsg(&rtm, l); 1404 } 1405 #endif /* SMALL */ 1406 #undef rtm 1407 return (0); 1408 } 1409 1410 static void 1411 mask_addr() 1412 { 1413 int olen = so_mask.sa.sa_len; 1414 char *cp1 = olen + (char *)&so_mask, *cp2; 1415 1416 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1417 if (*--cp1 != 0) { 1418 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1419 break; 1420 } 1421 if ((rtm_addrs & RTA_DST) == 0) 1422 return; 1423 switch (so_dst.sa.sa_family) { 1424 case AF_INET: 1425 #ifdef INET6 1426 case AF_INET6: 1427 #endif 1428 case AF_APPLETALK: 1429 #ifndef SMALL 1430 case AF_NS: 1431 case AF_CCITT: 1432 #endif /* SMALL */ 1433 case 0: 1434 return; 1435 #ifndef SMALL 1436 case AF_ISO: 1437 olen = MIN(so_dst.siso.siso_nlen, 1438 MAX(so_mask.sa.sa_len - 6, 0)); 1439 break; 1440 #endif /* SMALL */ 1441 } 1442 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1443 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1444 while (cp2 > cp1) 1445 *--cp2 = 0; 1446 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1447 while (cp1 > so_dst.sa.sa_data) 1448 *--cp1 &= *--cp2; 1449 #ifndef SMALL 1450 switch (so_dst.sa.sa_family) { 1451 case AF_ISO: 1452 so_dst.siso.siso_nlen = olen; 1453 break; 1454 } 1455 #endif /* SMALL */ 1456 } 1457 1458 char *msgtypes[] = { 1459 "", 1460 "RTM_ADD: Add Route", 1461 "RTM_DELETE: Delete Route", 1462 "RTM_CHANGE: Change Metrics or flags", 1463 "RTM_GET: Report Metrics", 1464 "RTM_LOSING: Kernel Suspects Partitioning", 1465 "RTM_REDIRECT: Told to use different route", 1466 "RTM_MISS: Lookup failed on this address", 1467 "RTM_LOCK: fix specified metrics", 1468 "RTM_OLDADD: caused by SIOCADDRT", 1469 "RTM_OLDDEL: caused by SIOCDELRT", 1470 "RTM_RESOLVE: Route created by cloning", 1471 "RTM_NEWADDR: address being added to iface", 1472 "RTM_DELADDR: address being removed from iface", 1473 "RTM_OIFINFO: iface status change (pre-1.5)", 1474 "RTM_IFINFO: iface status change", 1475 "RTM_IFANNOUNCE: iface arrival/departure", 1476 0, 1477 }; 1478 1479 char metricnames[] = 1480 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1481 char routeflags[] = 1482 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1483 char ifnetflags[] = 1484 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1485 char addrnames[] = 1486 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1487 1488 static void 1489 print_rtmsg(rtm, msglen) 1490 struct rt_msghdr *rtm; 1491 int msglen; 1492 { 1493 struct if_msghdr *ifm; 1494 struct ifa_msghdr *ifam; 1495 struct if_announcemsghdr *ifan; 1496 1497 if (verbose == 0) 1498 return; 1499 if (rtm->rtm_version != RTM_VERSION) { 1500 (void) printf("routing message version %d not understood\n", 1501 rtm->rtm_version); 1502 return; 1503 } 1504 if (msgtypes[rtm->rtm_type]) 1505 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1506 else 1507 (void)printf("#%d: ", rtm->rtm_type); 1508 (void)printf("len %d, ", rtm->rtm_msglen); 1509 switch (rtm->rtm_type) { 1510 case RTM_IFINFO: 1511 ifm = (struct if_msghdr *)rtm; 1512 (void) printf("if# %d, flags:", ifm->ifm_index); 1513 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1514 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1515 break; 1516 case RTM_NEWADDR: 1517 case RTM_DELADDR: 1518 ifam = (struct ifa_msghdr *)rtm; 1519 (void) printf("metric %d, flags:", ifam->ifam_metric); 1520 bprintf(stdout, ifam->ifam_flags, routeflags); 1521 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1522 break; 1523 case RTM_IFANNOUNCE: 1524 ifan = (struct if_announcemsghdr *)rtm; 1525 (void) printf("if# %d, what: ", ifan->ifan_index); 1526 switch (ifan->ifan_what) { 1527 case IFAN_ARRIVAL: 1528 printf("arrival"); 1529 break; 1530 case IFAN_DEPARTURE: 1531 printf("departure"); 1532 break; 1533 default: 1534 printf("#%d", ifan->ifan_what); 1535 break; 1536 } 1537 printf("\n"); 1538 break; 1539 default: 1540 (void) printf("pid: %d, seq %d, errno %d, flags:", 1541 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1542 bprintf(stdout, rtm->rtm_flags, routeflags); 1543 pmsg_common(rtm); 1544 } 1545 } 1546 1547 #ifndef SMALL 1548 static void 1549 print_getmsg(rtm, msglen) 1550 struct rt_msghdr *rtm; 1551 int msglen; 1552 { 1553 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1554 struct sockaddr_dl *ifp = NULL; 1555 struct sockaddr *sa; 1556 char *cp; 1557 int i; 1558 1559 (void) printf(" route to: %s\n", 1560 routename((struct sockaddr *) &so_dst)); 1561 if (rtm->rtm_version != RTM_VERSION) { 1562 warnx("routing message version %d not understood", 1563 rtm->rtm_version); 1564 return; 1565 } 1566 if (rtm->rtm_msglen > msglen) { 1567 warnx("message length mismatch, in packet %d, returned %d\n", 1568 rtm->rtm_msglen, msglen); 1569 } 1570 if (rtm->rtm_errno) { 1571 warn("RTM_GET"); 1572 return; 1573 } 1574 cp = ((char *)(rtm + 1)); 1575 if (rtm->rtm_addrs) 1576 for (i = 1; i; i <<= 1) 1577 if (i & rtm->rtm_addrs) { 1578 sa = (struct sockaddr *)cp; 1579 switch (i) { 1580 case RTA_DST: 1581 dst = sa; 1582 break; 1583 case RTA_GATEWAY: 1584 gate = sa; 1585 break; 1586 case RTA_NETMASK: 1587 mask = sa; 1588 break; 1589 case RTA_IFP: 1590 if (sa->sa_family == AF_LINK && 1591 ((struct sockaddr_dl *)sa)->sdl_nlen) 1592 ifp = (struct sockaddr_dl *)sa; 1593 break; 1594 case RTA_IFA: 1595 ifa = sa; 1596 break; 1597 } 1598 ADVANCE(cp, sa); 1599 } 1600 if (dst && mask) 1601 mask->sa_family = dst->sa_family; /* XXX */ 1602 if (dst) 1603 (void)printf("destination: %s\n", routename(dst)); 1604 if (mask) { 1605 int savenflag = nflag; 1606 1607 nflag = 1; 1608 (void)printf(" mask: %s\n", routename(mask)); 1609 nflag = savenflag; 1610 } 1611 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1612 (void)printf(" gateway: %s\n", routename(gate)); 1613 if (ifa) 1614 (void)printf(" local addr: %s\n", routename(ifa)); 1615 if (ifp) 1616 (void)printf(" interface: %.*s\n", 1617 ifp->sdl_nlen, ifp->sdl_data); 1618 (void)printf(" flags: "); 1619 bprintf(stdout, rtm->rtm_flags, routeflags); 1620 1621 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1622 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1623 1624 (void) printf("\n%s\n", "\ 1625 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1626 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1627 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1628 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1629 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1630 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1631 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1632 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1633 if (rtm->rtm_rmx.rmx_expire) 1634 rtm->rtm_rmx.rmx_expire -= time(0); 1635 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1636 #undef lock 1637 #undef msec 1638 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1639 if (verbose) 1640 pmsg_common(rtm); 1641 else if (rtm->rtm_addrs &~ RTA_IGN) { 1642 (void) printf("sockaddrs: "); 1643 bprintf(stdout, rtm->rtm_addrs, addrnames); 1644 putchar('\n'); 1645 } 1646 #undef RTA_IGN 1647 } 1648 #endif /* SMALL */ 1649 1650 void 1651 pmsg_common(rtm) 1652 struct rt_msghdr *rtm; 1653 { 1654 (void) printf("\nlocks: "); 1655 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1656 (void) printf(" inits: "); 1657 bprintf(stdout, rtm->rtm_inits, metricnames); 1658 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1659 } 1660 1661 static void 1662 pmsg_addrs(cp, addrs) 1663 char *cp; 1664 int addrs; 1665 { 1666 struct sockaddr *sa; 1667 int i; 1668 1669 if (addrs != 0) { 1670 (void) printf("\nsockaddrs: "); 1671 bprintf(stdout, addrs, addrnames); 1672 (void) putchar('\n'); 1673 for (i = 1; i; i <<= 1) 1674 if (i & addrs) { 1675 sa = (struct sockaddr *)cp; 1676 (void) printf(" %s", routename(sa)); 1677 ADVANCE(cp, sa); 1678 } 1679 } 1680 (void) putchar('\n'); 1681 (void) fflush(stdout); 1682 } 1683 1684 static void 1685 bprintf(fp, b, s) 1686 FILE *fp; 1687 int b; 1688 u_char *s; 1689 { 1690 int i; 1691 int gotsome = 0; 1692 1693 if (b == 0) 1694 return; 1695 while ((i = *s++) != 0) { 1696 if (b & (1 << (i-1))) { 1697 if (gotsome == 0) 1698 i = '<'; 1699 else 1700 i = ','; 1701 (void) putc(i, fp); 1702 gotsome = 1; 1703 for (; (i = *s) > 32; s++) 1704 (void) putc(i, fp); 1705 } else 1706 while (*s > 32) 1707 s++; 1708 } 1709 if (gotsome) 1710 (void) putc('>', fp); 1711 } 1712 1713 static int 1714 keyword(cp) 1715 char *cp; 1716 { 1717 struct keytab *kt = keywords; 1718 1719 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1720 kt++; 1721 return kt->kt_i; 1722 } 1723 1724 static void 1725 sodump(su, which) 1726 sup su; 1727 char *which; 1728 { 1729 #ifdef INET6 1730 char ntop_buf[NI_MAXHOST]; 1731 #endif 1732 1733 switch (su->sa.sa_family) { 1734 case AF_INET: 1735 (void) printf("%s: inet %s; ", 1736 which, inet_ntoa(su->sin.sin_addr)); 1737 break; 1738 case AF_APPLETALK: 1739 (void) printf("%s: atalk %d.%d; ", 1740 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1741 break; 1742 case AF_LINK: 1743 (void) printf("%s: link %s; ", 1744 which, link_ntoa(&su->sdl)); 1745 break; 1746 #ifndef SMALL 1747 #ifdef INET6 1748 case AF_INET6: 1749 (void) printf("%s: inet6 %s; ", 1750 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 1751 ntop_buf, sizeof(ntop_buf))); 1752 break; 1753 #endif 1754 case AF_ISO: 1755 (void) printf("%s: iso %s; ", 1756 which, iso_ntoa(&su->siso.siso_addr)); 1757 break; 1758 case AF_NS: 1759 (void) printf("%s: xns %s; ", 1760 which, ns_ntoa(su->sns.sns_addr)); 1761 break; 1762 #endif /* SMALL */ 1763 default: 1764 (void) printf("af %p: %s; ", 1765 which, any_ntoa(&su->sa)); 1766 } 1767 (void) fflush(stdout); 1768 } 1769 1770 /* States*/ 1771 #define VIRGIN 0 1772 #define GOTONE 1 1773 #define GOTTWO 2 1774 /* Inputs */ 1775 #define DIGIT (4*0) 1776 #define END (4*1) 1777 #define DELIM (4*2) 1778 1779 static void 1780 sockaddr(addr, sa) 1781 char *addr; 1782 struct sockaddr *sa; 1783 { 1784 char *cp = (char *)sa; 1785 int size = sa->sa_len; 1786 char *cplim = cp + size; 1787 int byte = 0, state = VIRGIN, new = 0; 1788 1789 (void) memset(cp, 0, size); 1790 cp++; 1791 do { 1792 if ((*addr >= '0') && (*addr <= '9')) { 1793 new = *addr - '0'; 1794 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1795 new = *addr - 'a' + 10; 1796 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1797 new = *addr - 'A' + 10; 1798 } else if (*addr == 0) 1799 state |= END; 1800 else 1801 state |= DELIM; 1802 addr++; 1803 switch (state /* | INPUT */) { 1804 case GOTTWO | DIGIT: 1805 *cp++ = byte; /*FALLTHROUGH*/ 1806 case VIRGIN | DIGIT: 1807 state = GOTONE; byte = new; continue; 1808 case GOTONE | DIGIT: 1809 state = GOTTWO; byte = new + (byte << 4); continue; 1810 default: /* | DELIM */ 1811 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1812 case GOTONE | END: 1813 case GOTTWO | END: 1814 *cp++ = byte; /* FALLTHROUGH */ 1815 case VIRGIN | END: 1816 break; 1817 } 1818 break; 1819 } while (cp < cplim); 1820 sa->sa_len = cp - (char *)sa; 1821 } 1822
Indexes created Mon Sep 29 21:09:56 GMT 2025