route.c revision 1.45
1 /* $NetBSD: route.c,v 1.45 2001/02/19 22:56:22 cgd 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 1.45 2001/02/19 22:56:22 cgd 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 #ifdef INET6 96 static int prefixlen __P((char *)); 97 #endif 98 static int x25_makemask __P((void)); 99 static void interfaces __P((void)); 100 static void monitor __P((void)); 101 static void print_getmsg __P((struct rt_msghdr *, int)); 102 #endif 103 static int rtmsg __P((int, int )); 104 static void mask_addr __P((void)); 105 static void print_rtmsg __P((struct rt_msghdr *, int)); 106 static void pmsg_common __P((struct rt_msghdr *)); 107 static void pmsg_addrs __P((char *, int)); 108 static void bprintf __P((FILE *, int, u_char *)); 109 static int keyword __P((char *)); 110 static void sodump __P((sup, char *)); 111 static void sockaddr __P((char *, struct sockaddr *)); 112 113 union sockunion { 114 struct sockaddr sa; 115 struct sockaddr_in sin; 116 #ifdef INET6 117 struct sockaddr_in6 sin6; 118 #endif 119 struct sockaddr_at sat; 120 struct sockaddr_dl sdl; 121 #ifndef SMALL 122 struct sockaddr_ns sns; 123 struct sockaddr_iso siso; 124 struct sockaddr_x25 sx25; 125 #endif /* SMALL */ 126 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 127 128 int pid, rtm_addrs; 129 int s; 130 int forcehost, forcenet, doflush, nflag, af, qflag, tflag; 131 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 132 int locking, lockrest, debugonly; 133 struct rt_metrics rt_metrics; 134 u_int32_t rtm_inits; 135 short ns_nullh[] = {0,0,0}; 136 short ns_bh[] = {-1,-1,-1}; 137 138 139 static void 140 usage(cp) 141 char *cp; 142 { 143 144 if (cp) 145 warnx("botched keyword: %s", cp); 146 (void) fprintf(stderr, 147 "Usage: %s [ -fnqv ] cmd [[ -<qualifers> ] args ]\n", 148 getprogname()); 149 exit(1); 150 /* NOTREACHED */ 151 } 152 153 #define ROUNDUP(a) \ 154 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 155 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 156 157 int 158 main(argc, argv) 159 int argc; 160 char **argv; 161 { 162 int ch; 163 164 if (argc < 2) 165 usage(NULL); 166 167 while ((ch = getopt(argc, argv, "fnqvdt")) != -1) 168 switch(ch) { 169 case 'f': 170 doflush = 1; 171 break; 172 case 'n': 173 nflag = 1; 174 break; 175 case 'q': 176 qflag = 1; 177 break; 178 case 'v': 179 verbose = 1; 180 break; 181 case 't': 182 tflag = 1; 183 break; 184 case 'd': 185 debugonly = 1; 186 break; 187 case '?': 188 default: 189 usage(NULL); 190 } 191 argc -= optind; 192 argv += optind; 193 194 pid = getpid(); 195 if (tflag) 196 s = open("/dev/null", O_WRONLY, 0); 197 else 198 s = socket(PF_ROUTE, SOCK_RAW, 0); 199 if (s < 0) 200 err(1, "socket"); 201 202 if (*argv == NULL) { 203 if (doflush) 204 ch = K_FLUSH; 205 else 206 goto no_cmd; 207 } else 208 ch = keyword(*argv); 209 210 switch (ch) { 211 212 #ifndef SMALL 213 case K_GET: 214 #endif /* SMALL */ 215 case K_CHANGE: 216 case K_ADD: 217 case K_DELETE: 218 if (doflush) 219 flushroutes(1, argv); 220 newroute(argc, argv); 221 break; 222 223 case K_SHOW: 224 show(argc, argv); 225 break; 226 227 #ifndef SMALL 228 case K_MONITOR: 229 monitor(); 230 break; 231 232 #endif /* SMALL */ 233 case K_FLUSH: 234 flushroutes(argc, argv); 235 break; 236 237 no_cmd: 238 default: 239 usage(*argv); 240 return 1; 241 } 242 return 0; 243 } 244 245 /* 246 * Purge all entries in the routing tables not 247 * associated with network interfaces. 248 */ 249 static void 250 flushroutes(argc, argv) 251 int argc; 252 char *argv[]; 253 { 254 size_t needed; 255 int mib[6], rlen, seqno; 256 char *buf, *next, *lim; 257 struct rt_msghdr *rtm; 258 259 af = 0; 260 shutdown(s, 0); /* Don't want to read back our messages */ 261 if (argc > 1) { 262 argv++; 263 if (argc == 2 && **argv == '-') 264 switch (keyword(*argv + 1)) { 265 case K_INET: 266 af = AF_INET; 267 break; 268 #ifdef INET6 269 case K_INET6: 270 af = AF_INET6; 271 break; 272 #endif 273 case K_ATALK: 274 af = AF_APPLETALK; 275 break; 276 #ifndef SMALL 277 case K_XNS: 278 af = AF_NS; 279 break; 280 #endif /* SMALL */ 281 case K_LINK: 282 af = AF_LINK; 283 break; 284 #ifndef SMALL 285 case K_ISO: 286 case K_OSI: 287 af = AF_ISO; 288 break; 289 case K_X25: 290 af = AF_CCITT; 291 #endif /* SMALL */ 292 default: 293 goto bad; 294 } else 295 bad: usage(*argv); 296 } 297 mib[0] = CTL_NET; 298 mib[1] = PF_ROUTE; 299 mib[2] = 0; /* protocol */ 300 mib[3] = 0; /* wildcard address family */ 301 mib[4] = NET_RT_DUMP; 302 mib[5] = 0; /* no flags */ 303 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 304 err(1, "route-sysctl-estimate"); 305 if (needed == 0) 306 return; 307 if ((buf = malloc(needed)) == NULL) 308 err(1, "malloc"); 309 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 310 err(1, "actual retrieval of routing table"); 311 lim = buf + needed; 312 if (verbose) { 313 (void) printf("Examining routing table from sysctl\n"); 314 if (af) printf("(address family %s)\n", (*argv + 1)); 315 } 316 seqno = 0; /* ??? */ 317 for (next = buf; next < lim; next += rtm->rtm_msglen) { 318 rtm = (struct rt_msghdr *)next; 319 if (verbose) 320 print_rtmsg(rtm, rtm->rtm_msglen); 321 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 322 continue; 323 if (af) { 324 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 325 326 if (sa->sa_family != af) 327 continue; 328 } 329 if (debugonly) 330 continue; 331 rtm->rtm_type = RTM_DELETE; 332 rtm->rtm_seq = seqno; 333 rlen = write(s, next, rtm->rtm_msglen); 334 if (rlen < (int)rtm->rtm_msglen) { 335 warn("write to routing socket, got %d for rlen", rlen); 336 break; 337 } 338 seqno++; 339 if (qflag) 340 continue; 341 if (verbose) 342 print_rtmsg(rtm, rlen); 343 else { 344 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 345 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 346 routename(sa) : netname(sa)); 347 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 348 (void) printf("%-20.20s ", routename(sa)); 349 (void) printf("done\n"); 350 } 351 } 352 } 353 354 355 static char hexlist[] = "0123456789abcdef"; 356 357 static char * 358 any_ntoa(sa) 359 const struct sockaddr *sa; 360 { 361 static char obuf[64]; 362 const char *in; 363 char *out; 364 int len; 365 366 len = sa->sa_len; 367 in = sa->sa_data; 368 out = obuf; 369 370 do { 371 *out++ = hexlist[(*in >> 4) & 15]; 372 *out++ = hexlist[(*in++) & 15]; 373 *out++ = '.'; 374 } while (--len > 0); 375 out[-1] = '\0'; 376 return obuf; 377 } 378 379 380 char * 381 routename(sa) 382 struct sockaddr *sa; 383 { 384 char *cp; 385 static char line[50]; 386 struct hostent *hp; 387 static char domain[MAXHOSTNAMELEN + 1]; 388 static int first = 1; 389 struct in_addr in; 390 391 if (first) { 392 first = 0; 393 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 394 (cp = strchr(domain, '.'))) { 395 (void)strncpy(domain, cp + 1, sizeof(domain) - 1); 396 domain[sizeof(domain) - 1] = '\0'; 397 } else 398 domain[0] = 0; 399 } 400 401 if (sa->sa_len == 0) { 402 strncpy(line, "default", sizeof(line) - 1); 403 line[sizeof(line) - 1] = '\0'; 404 } else switch (sa->sa_family) { 405 406 case AF_INET: 407 in = ((struct sockaddr_in *)sa)->sin_addr; 408 409 cp = 0; 410 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 411 cp = "default"; 412 if (cp == 0 && !nflag) { 413 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 414 AF_INET); 415 if (hp) { 416 if ((cp = strchr(hp->h_name, '.')) && 417 !strcmp(cp + 1, domain)) 418 *cp = 0; 419 cp = hp->h_name; 420 } 421 } 422 if (cp) 423 (void)strncpy(line, cp, sizeof(line) - 1); 424 else 425 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 426 line[sizeof(line) - 1] = '\0'; 427 break; 428 429 case AF_LINK: 430 return (link_ntoa((struct sockaddr_dl *)sa)); 431 432 #ifndef SMALL 433 #ifdef INET6 434 case AF_INET6: 435 { 436 struct sockaddr_in6 sin6; 437 int niflags; 438 439 #ifdef NI_WITHSCOPEID 440 niflags = NI_WITHSCOPEID; 441 #else 442 niflags = 0; 443 #endif 444 if (nflag) 445 niflags |= NI_NUMERICHOST; 446 memset(&sin6, 0, sizeof(sin6)); 447 memcpy(&sin6, sa, sa->sa_len); 448 sin6.sin6_len = sizeof(struct sockaddr_in6); 449 sin6.sin6_family = AF_INET6; 450 #ifdef __KAME__ 451 if (sa->sa_len == sizeof(struct sockaddr_in6) && 452 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 453 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 454 sin6.sin6_scope_id == 0) { 455 sin6.sin6_scope_id = 456 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 457 sin6.sin6_addr.s6_addr[2] = 0; 458 sin6.sin6_addr.s6_addr[3] = 0; 459 } 460 #endif 461 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 462 line, sizeof(line), NULL, 0, niflags) != 0) 463 strncpy(line, "invalid", sizeof(line)); 464 break; 465 } 466 #endif 467 468 case AF_NS: 469 return (ns_print((struct sockaddr_ns *)sa)); 470 471 case AF_ISO: 472 (void)snprintf(line, sizeof line, "iso %s", 473 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 474 break; 475 #endif /* SMALL */ 476 477 case AF_APPLETALK: 478 (void) snprintf(line, sizeof(line), "atalk %d.%d", 479 ((struct sockaddr_at *)sa)->sat_addr.s_net, 480 ((struct sockaddr_at *)sa)->sat_addr.s_node); 481 break; 482 483 default: 484 (void)snprintf(line, sizeof line, "(%d) %s", 485 sa->sa_family, any_ntoa(sa)); 486 break; 487 488 } 489 return (line); 490 } 491 492 /* 493 * Return the name of the network whose address is given. 494 * The address is assumed to be that of a net or subnet, not a host. 495 */ 496 char * 497 netname(sa) 498 struct sockaddr *sa; 499 { 500 char *cp = 0; 501 static char line[50]; 502 struct netent *np = 0; 503 u_int32_t net, mask; 504 u_int32_t i; 505 int subnetshift; 506 struct in_addr in; 507 508 switch (sa->sa_family) { 509 510 case AF_INET: 511 in = ((struct sockaddr_in *)sa)->sin_addr; 512 i = ntohl(in.s_addr); 513 if (i == 0) 514 cp = "default"; 515 else if (!nflag) { 516 if (IN_CLASSA(i)) { 517 mask = IN_CLASSA_NET; 518 subnetshift = 8; 519 } else if (IN_CLASSB(i)) { 520 mask = IN_CLASSB_NET; 521 subnetshift = 8; 522 } else { 523 mask = IN_CLASSC_NET; 524 subnetshift = 4; 525 } 526 /* 527 * If there are more bits than the standard mask 528 * would suggest, subnets must be in use. 529 * Guess at the subnet mask, assuming reasonable 530 * width subnet fields. 531 */ 532 while (i &~ mask) 533 mask = (int32_t)mask >> subnetshift; 534 net = i & mask; 535 while ((mask & 1) == 0) 536 mask >>= 1, net >>= 1; 537 np = getnetbyaddr(net, AF_INET); 538 if (np) 539 cp = np->n_name; 540 } 541 if (cp) { 542 (void)strncpy(line, cp, sizeof(line) - 1); 543 line[sizeof(line) - 1] = '\0'; 544 } else { 545 #if 0 /* XXX - This is silly... */ 546 #define C(x) ((x) & 0xff) 547 if ((i & 0xffffff) == 0) 548 (void)snprintf(line, sizeof line, "%u", 549 C(i >> 24)); 550 else if ((i & 0xffff) == 0) 551 (void)snprintf(line, sizeof line, "%u.%u", 552 C(i >> 24), C(i >> 16)); 553 else if ((i & 0xff) == 0) 554 (void)snprintf(line, sizeof line, "%u.%u.%u", 555 C(i >> 24), C(i >> 16), C(i >> 8)); 556 else 557 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 558 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 559 #undef C 560 #else /* XXX */ 561 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 562 #endif /* XXX */ 563 } 564 break; 565 566 case AF_LINK: 567 return (link_ntoa((struct sockaddr_dl *)sa)); 568 569 #ifndef SMALL 570 #ifdef INET6 571 case AF_INET6: 572 { 573 struct sockaddr_in6 sin6; 574 int niflags; 575 576 #ifdef NI_WITHSCOPEID 577 niflags = NI_WITHSCOPEID; 578 #else 579 niflags = 0; 580 #endif 581 if (nflag) 582 niflags |= NI_NUMERICHOST; 583 memset(&sin6, 0, sizeof(sin6)); 584 memcpy(&sin6, sa, sa->sa_len); 585 sin6.sin6_len = sizeof(struct sockaddr_in6); 586 sin6.sin6_family = AF_INET6; 587 #ifdef __KAME__ 588 if (sa->sa_len == sizeof(struct sockaddr_in6) && 589 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 590 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 591 sin6.sin6_scope_id == 0) { 592 sin6.sin6_scope_id = 593 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 594 sin6.sin6_addr.s6_addr[2] = 0; 595 sin6.sin6_addr.s6_addr[3] = 0; 596 } 597 #endif 598 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 599 line, sizeof(line), NULL, 0, niflags) != 0) 600 strncpy(line, "invalid", sizeof(line)); 601 break; 602 } 603 #endif 604 605 case AF_NS: 606 return (ns_print((struct sockaddr_ns *)sa)); 607 608 case AF_ISO: 609 (void)snprintf(line, sizeof line, "iso %s", 610 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 611 break; 612 #endif /* SMALL */ 613 614 case AF_APPLETALK: 615 (void) snprintf(line, sizeof(line), "atalk %d.%d", 616 ((struct sockaddr_at *)sa)->sat_addr.s_net, 617 ((struct sockaddr_at *)sa)->sat_addr.s_node); 618 break; 619 620 default: 621 (void)snprintf(line, sizeof line, "af %d: %s", 622 sa->sa_family, any_ntoa(sa)); 623 break; 624 } 625 return (line); 626 } 627 628 static void 629 set_metric(value, key) 630 char *value; 631 int key; 632 { 633 int flag = 0; 634 u_long noval, *valp = &noval; 635 636 switch (key) { 637 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 638 caseof(K_MTU, RTV_MTU, rmx_mtu); 639 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 640 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 641 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 642 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 643 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 644 caseof(K_RTT, RTV_RTT, rmx_rtt); 645 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 646 } 647 rtm_inits |= flag; 648 if (lockrest || locking) 649 rt_metrics.rmx_locks |= flag; 650 if (locking) 651 locking = 0; 652 *valp = atoi(value); 653 } 654 655 static void 656 newroute(argc, argv) 657 int argc; 658 char **argv; 659 { 660 char *cmd, *dest = "", *gateway = ""; 661 const char *err; 662 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 663 int key; 664 struct hostent *hp = 0; 665 666 cmd = argv[0]; 667 af = 0; 668 if (*cmd != 'g') 669 shutdown(s, 0); /* Don't want to read back our messages */ 670 while (--argc > 0) { 671 if (**(++argv)== '-') { 672 switch (key = keyword(1 + *argv)) { 673 674 case K_SA: 675 af = PF_ROUTE; 676 aflen = sizeof(union sockunion); 677 break; 678 679 case K_ATALK: 680 af = AF_APPLETALK; 681 aflen = sizeof(struct sockaddr_at); 682 break; 683 684 case K_INET: 685 af = AF_INET; 686 aflen = sizeof(struct sockaddr_in); 687 break; 688 689 #ifdef INET6 690 case K_INET6: 691 af = AF_INET6; 692 aflen = sizeof(struct sockaddr_in6); 693 break; 694 #endif 695 696 case K_LINK: 697 af = AF_LINK; 698 aflen = sizeof(struct sockaddr_dl); 699 break; 700 701 #ifndef SMALL 702 case K_OSI: 703 case K_ISO: 704 af = AF_ISO; 705 aflen = sizeof(struct sockaddr_iso); 706 break; 707 708 case K_X25: 709 af = AF_CCITT; 710 aflen = sizeof(struct sockaddr_x25); 711 break; 712 713 case K_XNS: 714 af = AF_NS; 715 aflen = sizeof(struct sockaddr_ns); 716 break; 717 #endif /* SMALL */ 718 719 case K_IFACE: 720 case K_INTERFACE: 721 iflag++; 722 break; 723 case K_NOSTATIC: 724 flags &= ~RTF_STATIC; 725 break; 726 case K_LLINFO: 727 flags |= RTF_LLINFO; 728 break; 729 case K_LOCK: 730 locking = 1; 731 break; 732 case K_LOCKREST: 733 lockrest = 1; 734 break; 735 case K_HOST: 736 forcehost++; 737 break; 738 case K_REJECT: 739 flags |= RTF_REJECT; 740 break; 741 case K_BLACKHOLE: 742 flags |= RTF_BLACKHOLE; 743 break; 744 case K_CLONED: 745 flags |= RTF_CLONED; 746 break; 747 case K_PROTO1: 748 flags |= RTF_PROTO1; 749 break; 750 case K_PROTO2: 751 flags |= RTF_PROTO2; 752 break; 753 case K_CLONING: 754 flags |= RTF_CLONING; 755 break; 756 case K_XRESOLVE: 757 flags |= RTF_XRESOLVE; 758 break; 759 case K_STATIC: 760 flags |= RTF_STATIC; 761 break; 762 case K_IFA: 763 if (!--argc) 764 usage(1+*argv); 765 (void) getaddr(RTA_IFA, *++argv, 0); 766 break; 767 case K_IFP: 768 if (!--argc) 769 usage(1+*argv); 770 (void) getaddr(RTA_IFP, *++argv, 0); 771 break; 772 case K_GENMASK: 773 if (!--argc) 774 usage(1+*argv); 775 (void) getaddr(RTA_GENMASK, *++argv, 0); 776 break; 777 case K_GATEWAY: 778 if (!--argc) 779 usage(1+*argv); 780 (void) getaddr(RTA_GATEWAY, *++argv, 0); 781 break; 782 case K_DST: 783 if (!--argc) 784 usage(1+*argv); 785 ishost = getaddr(RTA_DST, *++argv, &hp); 786 dest = *argv; 787 break; 788 case K_NETMASK: 789 if (!--argc) 790 usage(1+*argv); 791 (void) getaddr(RTA_NETMASK, *++argv, 0); 792 /* FALLTHROUGH */ 793 case K_NET: 794 forcenet++; 795 break; 796 #ifdef INET6 797 case K_PREFIXLEN: 798 argc--; 799 if (prefixlen(*++argv) == 128) { 800 forcenet = 0; 801 ishost = 1; 802 } else { 803 forcenet = 1; 804 ishost = 0; 805 } 806 break; 807 #endif 808 case K_MTU: 809 case K_HOPCOUNT: 810 case K_EXPIRE: 811 case K_RECVPIPE: 812 case K_SENDPIPE: 813 case K_SSTHRESH: 814 case K_RTT: 815 case K_RTTVAR: 816 if (!--argc) 817 usage(1+*argv); 818 set_metric(*++argv, key); 819 break; 820 default: 821 usage(1+*argv); 822 } 823 } else { 824 if ((rtm_addrs & RTA_DST) == 0) { 825 dest = *argv; 826 ishost = getaddr(RTA_DST, *argv, &hp); 827 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 828 gateway = *argv; 829 (void) getaddr(RTA_GATEWAY, *argv, &hp); 830 } else { 831 int ret = atoi(*argv); 832 833 if (ret == 0) { 834 if (!qflag && strcmp(*argv, "0") == 0) 835 warnx("%s, %s", 836 "old usage of trailing 0", 837 "assuming route to if"); 838 else 839 usage((char *)NULL); 840 iflag = 1; 841 continue; 842 } else if (ret > 0 && ret < 10) { 843 if (!qflag) { 844 warnx("%s, %s", 845 "old usage of trailing digit", 846 "assuming route via gateway"); 847 } 848 iflag = 0; 849 continue; 850 } 851 (void) getaddr(RTA_NETMASK, *argv, 0); 852 } 853 } 854 } 855 if (forcehost) 856 ishost = 1; 857 if (forcenet) 858 ishost = 0; 859 flags |= RTF_UP; 860 if (ishost) 861 flags |= RTF_HOST; 862 if (iflag == 0) 863 flags |= RTF_GATEWAY; 864 for (attempts = 1; ; attempts++) { 865 errno = 0; 866 if ((ret = rtmsg(*cmd, flags)) == 0) 867 break; 868 if (errno != ENETUNREACH && errno != ESRCH) 869 break; 870 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 871 hp->h_addr_list++; 872 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 873 hp->h_length); 874 } else 875 break; 876 } 877 if (*cmd == 'g') 878 exit(0); 879 oerrno = errno; 880 if (!qflag) { 881 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 882 if (*gateway) { 883 (void) printf(": gateway %s", gateway); 884 if (attempts > 1 && ret == 0 && af == AF_INET) 885 (void) printf(" (%s)", 886 inet_ntoa(so_gate.sin.sin_addr)); 887 } 888 if (ret == 0) 889 (void) printf("\n"); 890 } 891 if (ret != 0) { 892 switch (oerrno) { 893 case ESRCH: 894 err = "not in table"; 895 break; 896 case EBUSY: 897 err = "entry in use"; 898 break; 899 case ENOBUFS: 900 err = "routing table overflow"; 901 break; 902 default: 903 err = strerror(oerrno); 904 break; 905 } 906 (void) printf(": %s\n", err); 907 } 908 } 909 910 static void 911 inet_makenetandmask(net, sin) 912 u_int32_t net; 913 struct sockaddr_in *sin; 914 { 915 u_int32_t addr, mask = 0; 916 char *cp; 917 918 rtm_addrs |= RTA_NETMASK; 919 if (net == 0) 920 mask = addr = 0; 921 else if (net < 128) { 922 addr = net << IN_CLASSA_NSHIFT; 923 mask = IN_CLASSA_NET; 924 } else if (net < 65536) { 925 addr = net << IN_CLASSB_NSHIFT; 926 mask = IN_CLASSB_NET; 927 } else if (net < 16777216L) { 928 addr = net << IN_CLASSC_NSHIFT; 929 mask = IN_CLASSC_NET; 930 } else { 931 addr = net; 932 if ((addr & IN_CLASSA_HOST) == 0) 933 mask = IN_CLASSA_NET; 934 else if ((addr & IN_CLASSB_HOST) == 0) 935 mask = IN_CLASSB_NET; 936 else if ((addr & IN_CLASSC_HOST) == 0) 937 mask = IN_CLASSC_NET; 938 else 939 mask = -1; 940 } 941 sin->sin_addr.s_addr = htonl(addr); 942 sin = &so_mask.sin; 943 sin->sin_addr.s_addr = htonl(mask); 944 sin->sin_len = 0; 945 sin->sin_family = 0; 946 cp = (char *)(&sin->sin_addr + 1); 947 while (*--cp == 0 && cp > (char *)sin) 948 ; 949 sin->sin_len = 1 + cp - (char *)sin; 950 } 951 952 #ifdef INET6 953 /* 954 * XXX the function may need more improvement... 955 */ 956 static void 957 inet6_makenetandmask(sin6) 958 struct sockaddr_in6 *sin6; 959 { 960 char *plen; 961 struct in6_addr in6; 962 963 plen = NULL; 964 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 965 sin6->sin6_scope_id == 0) { 966 plen = "0"; 967 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 968 /* aggregatable global unicast - RFC2374 */ 969 memset(&in6, 0, sizeof(in6)); 970 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 971 plen = "64"; 972 else 973 plen = "128"; 974 } 975 976 if (plen) { 977 rtm_addrs |= RTA_NETMASK; 978 prefixlen(plen); 979 } 980 } 981 #endif 982 983 /* 984 * Interpret an argument as a network address of some kind, 985 * returning 1 if a host address, 0 if a network address. 986 */ 987 static int 988 getaddr(which, s, hpp) 989 int which; 990 char *s; 991 struct hostent **hpp; 992 { 993 sup su; 994 struct hostent *hp; 995 struct netent *np; 996 u_int32_t val; 997 char *t; 998 int afamily; /* local copy of af so we can change it */ 999 1000 if (af == 0) { 1001 af = AF_INET; 1002 aflen = sizeof(struct sockaddr_in); 1003 } 1004 afamily = af; 1005 rtm_addrs |= which; 1006 switch (which) { 1007 case RTA_DST: 1008 su = &so_dst; 1009 break; 1010 case RTA_GATEWAY: 1011 su = &so_gate; 1012 break; 1013 case RTA_NETMASK: 1014 su = &so_mask; 1015 break; 1016 case RTA_GENMASK: 1017 su = &so_genmask; 1018 break; 1019 case RTA_IFP: 1020 su = &so_ifp; 1021 afamily = AF_LINK; 1022 break; 1023 case RTA_IFA: 1024 su = &so_ifa; 1025 su->sa.sa_family = af; 1026 break; 1027 default: 1028 su = NULL; 1029 usage("Internal Error"); 1030 /*NOTREACHED*/ 1031 } 1032 su->sa.sa_len = aflen; 1033 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1034 if (strcmp(s, "default") == 0) { 1035 switch (which) { 1036 case RTA_DST: 1037 forcenet++; 1038 (void) getaddr(RTA_NETMASK, s, 0); 1039 break; 1040 case RTA_NETMASK: 1041 case RTA_GENMASK: 1042 su->sa.sa_len = 0; 1043 } 1044 return (0); 1045 } 1046 switch (afamily) { 1047 #ifndef SMALL 1048 #ifdef INET6 1049 case AF_INET6: 1050 { 1051 struct addrinfo hints, *res; 1052 1053 memset(&hints, 0, sizeof(hints)); 1054 hints.ai_family = afamily; /*AF_INET6*/ 1055 hints.ai_flags = AI_NUMERICHOST; 1056 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1057 if (getaddrinfo(s, "0", &hints, &res) != 0 || 1058 res->ai_family != AF_INET6 || 1059 res->ai_addrlen != sizeof(su->sin6)) { 1060 (void) fprintf(stderr, "%s: bad value\n", s); 1061 exit(1); 1062 } 1063 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1064 #ifdef __KAME__ 1065 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1066 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1067 su->sin6.sin6_scope_id) { 1068 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1069 htons(su->sin6.sin6_scope_id); 1070 su->sin6.sin6_scope_id = 0; 1071 } 1072 #endif 1073 if (which == RTA_DST) 1074 inet6_makenetandmask(&su->sin6); 1075 freeaddrinfo(res); 1076 return 0; 1077 } 1078 #endif 1079 1080 case AF_NS: 1081 if (which == RTA_DST) { 1082 struct sockaddr_ns *sms = &(so_mask.sns); 1083 memset(sms, 0, sizeof(*sms)); 1084 sms->sns_family = 0; 1085 sms->sns_len = 6; 1086 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1087 rtm_addrs |= RTA_NETMASK; 1088 } 1089 su->sns.sns_addr = ns_addr(s); 1090 return (!ns_nullhost(su->sns.sns_addr)); 1091 1092 case AF_OSI: 1093 su->siso.siso_addr = *iso_addr(s); 1094 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1095 char *cp = (char *)TSEL(&su->siso); 1096 su->siso.siso_nlen = 0; 1097 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1098 su->siso.siso_len = 1 + cp - (char *)su; 1099 } 1100 return (1); 1101 1102 case AF_CCITT: 1103 ccitt_addr(s, &su->sx25); 1104 return (which == RTA_DST ? x25_makemask() : 1); 1105 #endif /* SMALL */ 1106 1107 case PF_ROUTE: 1108 su->sa.sa_len = sizeof(*su); 1109 sockaddr(s, &su->sa); 1110 return (1); 1111 1112 case AF_APPLETALK: 1113 t = strchr (s, '.'); 1114 if (!t) { 1115 badataddr: 1116 errx(1, "bad address: %s", s); 1117 } 1118 val = atoi (s); 1119 if (val > 65535) 1120 goto badataddr; 1121 su->sat.sat_addr.s_net = val; 1122 val = atoi (t); 1123 if (val > 256) 1124 goto badataddr; 1125 su->sat.sat_addr.s_node = val; 1126 rtm_addrs |= RTA_NETMASK; 1127 return(forcehost || su->sat.sat_addr.s_node != 0); 1128 1129 case AF_LINK: 1130 link_addr(s, &su->sdl); 1131 return (1); 1132 1133 case AF_INET: 1134 default: 1135 break; 1136 } 1137 1138 if (hpp == NULL) 1139 hpp = &hp; 1140 *hpp = NULL; 1141 if (((val = inet_addr(s)) != INADDR_NONE) && 1142 (which != RTA_DST || forcenet == 0)) { 1143 su->sin.sin_addr.s_addr = val; 1144 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1145 return (1); 1146 else { 1147 val = ntohl(val); 1148 goto netdone; 1149 } 1150 } 1151 if ((val = inet_network(s)) != INADDR_NONE || 1152 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1153 netdone: 1154 if (which == RTA_DST) 1155 inet_makenetandmask(val, &su->sin); 1156 return (0); 1157 } 1158 hp = gethostbyname(s); 1159 if (hp) { 1160 *hpp = hp; 1161 su->sin.sin_family = hp->h_addrtype; 1162 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1163 return (1); 1164 } 1165 errx(1, "bad value: %s", s); 1166 } 1167 1168 #ifdef INET6 1169 int 1170 prefixlen(s) 1171 char *s; 1172 { 1173 int len = atoi(s), q, r; 1174 1175 rtm_addrs |= RTA_NETMASK; 1176 if (len < -1 || len > 129) { 1177 (void) fprintf(stderr, "%s: bad value\n", s); 1178 exit(1); 1179 } 1180 1181 q = len >> 3; 1182 r = len & 7; 1183 so_mask.sin6.sin6_family = AF_INET6; 1184 so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1185 memset((void *)&so_mask.sin6.sin6_addr, 0, 1186 sizeof(so_mask.sin6.sin6_addr)); 1187 if (q > 0) 1188 memset((void *)&so_mask.sin6.sin6_addr, 0xff, q); 1189 if (r > 0) 1190 *((u_char *)&so_mask.sin6.sin6_addr + q) = (0xff00 >> r) & 0xff; 1191 return(len); 1192 } 1193 #endif 1194 1195 #ifndef SMALL 1196 int 1197 x25_makemask() 1198 { 1199 char *cp; 1200 1201 if ((rtm_addrs & RTA_NETMASK) == 0) { 1202 rtm_addrs |= RTA_NETMASK; 1203 for (cp = (char *)&so_mask.sx25.x25_net; 1204 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1205 *cp = -1; 1206 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1207 } 1208 return 0; 1209 } 1210 1211 1212 char * 1213 ns_print(sns) 1214 struct sockaddr_ns *sns; 1215 { 1216 struct ns_addr work; 1217 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1218 u_short port; 1219 static char mybuf[50], cport[10], chost[25]; 1220 char *host = ""; 1221 char *p; 1222 u_char *q; 1223 1224 work = sns->sns_addr; 1225 port = ntohs(work.x_port); 1226 work.x_port = 0; 1227 net.net_e = work.x_net; 1228 if (ns_nullhost(work) && net.int32_t_e == 0) { 1229 if (!port) 1230 return ("*.*"); 1231 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1232 return (mybuf); 1233 } 1234 1235 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1236 host = "any"; 1237 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1238 host = "*"; 1239 else { 1240 q = work.x_host.c_host; 1241 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1242 q[0], q[1], q[2], q[3], q[4], q[5]); 1243 for (p = chost; *p == '0' && p < chost + 12; p++) 1244 /* void */; 1245 host = p; 1246 } 1247 if (port) 1248 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1249 else 1250 *cport = 0; 1251 1252 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1253 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1254 return (mybuf); 1255 } 1256 1257 static void 1258 interfaces() 1259 { 1260 size_t needed; 1261 int mib[6]; 1262 char *buf, *lim, *next; 1263 struct rt_msghdr *rtm; 1264 1265 mib[0] = CTL_NET; 1266 mib[1] = PF_ROUTE; 1267 mib[2] = 0; /* protocol */ 1268 mib[3] = 0; /* wildcard address family */ 1269 mib[4] = NET_RT_IFLIST; 1270 mib[5] = 0; /* no flags */ 1271 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1272 err(1, "route-sysctl-estimate"); 1273 if ((buf = malloc(needed)) == NULL) 1274 err(1, "malloc"); 1275 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1276 err(1, "actual retrieval of interface table"); 1277 lim = buf + needed; 1278 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1279 rtm = (struct rt_msghdr *)next; 1280 print_rtmsg(rtm, rtm->rtm_msglen); 1281 } 1282 } 1283 1284 static void 1285 monitor() 1286 { 1287 int n; 1288 char msg[2048]; 1289 1290 verbose = 1; 1291 if (debugonly) { 1292 interfaces(); 1293 exit(0); 1294 } 1295 for(;;) { 1296 time_t now; 1297 n = read(s, msg, 2048); 1298 now = time(NULL); 1299 (void) printf("got message of size %d on %s", n, ctime(&now)); 1300 print_rtmsg((struct rt_msghdr *)msg, n); 1301 } 1302 } 1303 1304 #endif /* SMALL */ 1305 1306 1307 struct { 1308 struct rt_msghdr m_rtm; 1309 char m_space[512]; 1310 } m_rtmsg; 1311 1312 static int 1313 rtmsg(cmd, flags) 1314 int cmd, flags; 1315 { 1316 static int seq; 1317 int rlen; 1318 char *cp = m_rtmsg.m_space; 1319 int l; 1320 1321 #define NEXTADDR(w, u) \ 1322 if (rtm_addrs & (w)) {\ 1323 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1324 if (verbose) sodump(&(u),"u");\ 1325 } 1326 1327 errno = 0; 1328 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1329 if (cmd == 'a') 1330 cmd = RTM_ADD; 1331 else if (cmd == 'c') 1332 cmd = RTM_CHANGE; 1333 else if (cmd == 'g') { 1334 #ifdef SMALL 1335 return (-1); 1336 #else /* SMALL */ 1337 cmd = RTM_GET; 1338 if (so_ifp.sa.sa_family == 0) { 1339 so_ifp.sa.sa_family = AF_LINK; 1340 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1341 rtm_addrs |= RTA_IFP; 1342 } 1343 #endif /* SMALL */ 1344 } else 1345 cmd = RTM_DELETE; 1346 #define rtm m_rtmsg.m_rtm 1347 rtm.rtm_type = cmd; 1348 rtm.rtm_flags = flags; 1349 rtm.rtm_version = RTM_VERSION; 1350 rtm.rtm_seq = ++seq; 1351 rtm.rtm_addrs = rtm_addrs; 1352 rtm.rtm_rmx = rt_metrics; 1353 rtm.rtm_inits = rtm_inits; 1354 1355 if (rtm_addrs & RTA_NETMASK) 1356 mask_addr(); 1357 NEXTADDR(RTA_DST, so_dst); 1358 NEXTADDR(RTA_GATEWAY, so_gate); 1359 NEXTADDR(RTA_NETMASK, so_mask); 1360 NEXTADDR(RTA_GENMASK, so_genmask); 1361 NEXTADDR(RTA_IFP, so_ifp); 1362 NEXTADDR(RTA_IFA, so_ifa); 1363 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1364 if (verbose) 1365 print_rtmsg(&rtm, l); 1366 if (debugonly) 1367 return (0); 1368 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1369 perror("writing to routing socket"); 1370 return (-1); 1371 } 1372 #ifndef SMALL 1373 if (cmd == RTM_GET) { 1374 do { 1375 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1376 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1377 if (l < 0) 1378 err(1, "read from routing socket"); 1379 else 1380 print_getmsg(&rtm, l); 1381 } 1382 #endif /* SMALL */ 1383 #undef rtm 1384 return (0); 1385 } 1386 1387 static void 1388 mask_addr() 1389 { 1390 int olen = so_mask.sa.sa_len; 1391 char *cp1 = olen + (char *)&so_mask, *cp2; 1392 1393 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1394 if (*--cp1 != 0) { 1395 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1396 break; 1397 } 1398 if ((rtm_addrs & RTA_DST) == 0) 1399 return; 1400 switch (so_dst.sa.sa_family) { 1401 case AF_INET: 1402 #ifdef INET6 1403 case AF_INET6: 1404 #endif 1405 case AF_APPLETALK: 1406 #ifndef SMALL 1407 case AF_NS: 1408 case AF_CCITT: 1409 #endif /* SMALL */ 1410 case 0: 1411 return; 1412 #ifndef SMALL 1413 case AF_ISO: 1414 olen = MIN(so_dst.siso.siso_nlen, 1415 MAX(so_mask.sa.sa_len - 6, 0)); 1416 break; 1417 #endif /* SMALL */ 1418 } 1419 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1420 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1421 while (cp2 > cp1) 1422 *--cp2 = 0; 1423 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1424 while (cp1 > so_dst.sa.sa_data) 1425 *--cp1 &= *--cp2; 1426 #ifndef SMALL 1427 switch (so_dst.sa.sa_family) { 1428 case AF_ISO: 1429 so_dst.siso.siso_nlen = olen; 1430 break; 1431 } 1432 #endif /* SMALL */ 1433 } 1434 1435 char *msgtypes[] = { 1436 "", 1437 "RTM_ADD: Add Route", 1438 "RTM_DELETE: Delete Route", 1439 "RTM_CHANGE: Change Metrics or flags", 1440 "RTM_GET: Report Metrics", 1441 "RTM_LOSING: Kernel Suspects Partitioning", 1442 "RTM_REDIRECT: Told to use different route", 1443 "RTM_MISS: Lookup failed on this address", 1444 "RTM_LOCK: fix specified metrics", 1445 "RTM_OLDADD: caused by SIOCADDRT", 1446 "RTM_OLDDEL: caused by SIOCDELRT", 1447 "RTM_RESOLVE: Route created by cloning", 1448 "RTM_NEWADDR: address being added to iface", 1449 "RTM_DELADDR: address being removed from iface", 1450 "RTM_OIFINFO: iface status change (pre-1.5)", 1451 "RTM_IFINFO: iface status change", 1452 "RTM_IFANNOUNCE: iface arrival/departure", 1453 0, 1454 }; 1455 1456 char metricnames[] = 1457 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1458 char routeflags[] = 1459 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1460 char ifnetflags[] = 1461 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1462 char addrnames[] = 1463 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1464 1465 static void 1466 print_rtmsg(rtm, msglen) 1467 struct rt_msghdr *rtm; 1468 int msglen; 1469 { 1470 struct if_msghdr *ifm; 1471 struct ifa_msghdr *ifam; 1472 struct if_announcemsghdr *ifan; 1473 1474 if (verbose == 0) 1475 return; 1476 if (rtm->rtm_version != RTM_VERSION) { 1477 (void) printf("routing message version %d not understood\n", 1478 rtm->rtm_version); 1479 return; 1480 } 1481 if (msgtypes[rtm->rtm_type]) 1482 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1483 else 1484 (void)printf("#%d: ", rtm->rtm_type); 1485 (void)printf("len %d, ", rtm->rtm_msglen); 1486 switch (rtm->rtm_type) { 1487 case RTM_IFINFO: 1488 ifm = (struct if_msghdr *)rtm; 1489 (void) printf("if# %d, flags:", ifm->ifm_index); 1490 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1491 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1492 break; 1493 case RTM_NEWADDR: 1494 case RTM_DELADDR: 1495 ifam = (struct ifa_msghdr *)rtm; 1496 (void) printf("metric %d, flags:", ifam->ifam_metric); 1497 bprintf(stdout, ifam->ifam_flags, routeflags); 1498 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1499 break; 1500 case RTM_IFANNOUNCE: 1501 ifan = (struct if_announcemsghdr *)rtm; 1502 (void) printf("if# %d, what: ", ifan->ifan_index); 1503 switch (ifan->ifan_what) { 1504 case IFAN_ARRIVAL: 1505 printf("arrival"); 1506 break; 1507 case IFAN_DEPARTURE: 1508 printf("departure"); 1509 break; 1510 default: 1511 printf("#%d", ifan->ifan_what); 1512 break; 1513 } 1514 printf("\n"); 1515 break; 1516 default: 1517 (void) printf("pid: %d, seq %d, errno %d, flags:", 1518 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1519 bprintf(stdout, rtm->rtm_flags, routeflags); 1520 pmsg_common(rtm); 1521 } 1522 } 1523 1524 #ifndef SMALL 1525 static void 1526 print_getmsg(rtm, msglen) 1527 struct rt_msghdr *rtm; 1528 int msglen; 1529 { 1530 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1531 struct sockaddr_dl *ifp = NULL; 1532 struct sockaddr *sa; 1533 char *cp; 1534 int i; 1535 1536 (void) printf(" route to: %s\n", 1537 routename((struct sockaddr *) &so_dst)); 1538 if (rtm->rtm_version != RTM_VERSION) { 1539 warnx("routing message version %d not understood", 1540 rtm->rtm_version); 1541 return; 1542 } 1543 if (rtm->rtm_msglen > msglen) { 1544 warnx("message length mismatch, in packet %d, returned %d\n", 1545 rtm->rtm_msglen, msglen); 1546 } 1547 if (rtm->rtm_errno) { 1548 warn("RTM_GET"); 1549 return; 1550 } 1551 cp = ((char *)(rtm + 1)); 1552 if (rtm->rtm_addrs) 1553 for (i = 1; i; i <<= 1) 1554 if (i & rtm->rtm_addrs) { 1555 sa = (struct sockaddr *)cp; 1556 switch (i) { 1557 case RTA_DST: 1558 dst = sa; 1559 break; 1560 case RTA_GATEWAY: 1561 gate = sa; 1562 break; 1563 case RTA_NETMASK: 1564 mask = sa; 1565 break; 1566 case RTA_IFP: 1567 if (sa->sa_family == AF_LINK && 1568 ((struct sockaddr_dl *)sa)->sdl_nlen) 1569 ifp = (struct sockaddr_dl *)sa; 1570 break; 1571 case RTA_IFA: 1572 ifa = sa; 1573 break; 1574 } 1575 ADVANCE(cp, sa); 1576 } 1577 if (dst && mask) 1578 mask->sa_family = dst->sa_family; /* XXX */ 1579 if (dst) 1580 (void)printf("destination: %s\n", routename(dst)); 1581 if (mask) { 1582 int savenflag = nflag; 1583 1584 nflag = 1; 1585 (void)printf(" mask: %s\n", routename(mask)); 1586 nflag = savenflag; 1587 } 1588 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1589 (void)printf(" gateway: %s\n", routename(gate)); 1590 if (ifa) 1591 (void)printf(" local addr: %s\n", routename(ifa)); 1592 if (ifp) 1593 (void)printf(" interface: %.*s\n", 1594 ifp->sdl_nlen, ifp->sdl_data); 1595 (void)printf(" flags: "); 1596 bprintf(stdout, rtm->rtm_flags, routeflags); 1597 1598 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1599 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1600 1601 (void) printf("\n%s\n", "\ 1602 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1603 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1604 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1605 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1606 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1607 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1608 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1609 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1610 if (rtm->rtm_rmx.rmx_expire) 1611 rtm->rtm_rmx.rmx_expire -= time(0); 1612 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1613 #undef lock 1614 #undef msec 1615 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1616 if (verbose) 1617 pmsg_common(rtm); 1618 else if (rtm->rtm_addrs &~ RTA_IGN) { 1619 (void) printf("sockaddrs: "); 1620 bprintf(stdout, rtm->rtm_addrs, addrnames); 1621 putchar('\n'); 1622 } 1623 #undef RTA_IGN 1624 } 1625 #endif /* SMALL */ 1626 1627 void 1628 pmsg_common(rtm) 1629 struct rt_msghdr *rtm; 1630 { 1631 (void) printf("\nlocks: "); 1632 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1633 (void) printf(" inits: "); 1634 bprintf(stdout, rtm->rtm_inits, metricnames); 1635 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1636 } 1637 1638 static void 1639 pmsg_addrs(cp, addrs) 1640 char *cp; 1641 int addrs; 1642 { 1643 struct sockaddr *sa; 1644 int i; 1645 1646 if (addrs == 0) 1647 return; 1648 (void) printf("\nsockaddrs: "); 1649 bprintf(stdout, addrs, addrnames); 1650 (void) putchar('\n'); 1651 for (i = 1; i; i <<= 1) 1652 if (i & addrs) { 1653 sa = (struct sockaddr *)cp; 1654 (void) printf(" %s", routename(sa)); 1655 ADVANCE(cp, sa); 1656 } 1657 (void) putchar('\n'); 1658 (void) fflush(stdout); 1659 } 1660 1661 static void 1662 bprintf(fp, b, s) 1663 FILE *fp; 1664 int b; 1665 u_char *s; 1666 { 1667 int i; 1668 int gotsome = 0; 1669 1670 if (b == 0) 1671 return; 1672 while ((i = *s++) != 0) { 1673 if (b & (1 << (i-1))) { 1674 if (gotsome == 0) 1675 i = '<'; 1676 else 1677 i = ','; 1678 (void) putc(i, fp); 1679 gotsome = 1; 1680 for (; (i = *s) > 32; s++) 1681 (void) putc(i, fp); 1682 } else 1683 while (*s > 32) 1684 s++; 1685 } 1686 if (gotsome) 1687 (void) putc('>', fp); 1688 } 1689 1690 static int 1691 keyword(cp) 1692 char *cp; 1693 { 1694 struct keytab *kt = keywords; 1695 1696 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1697 kt++; 1698 return kt->kt_i; 1699 } 1700 1701 static void 1702 sodump(su, which) 1703 sup su; 1704 char *which; 1705 { 1706 #ifdef INET6 1707 char ntop_buf[NI_MAXHOST]; 1708 #endif 1709 1710 switch (su->sa.sa_family) { 1711 case AF_INET: 1712 (void) printf("%s: inet %s; ", 1713 which, inet_ntoa(su->sin.sin_addr)); 1714 break; 1715 case AF_APPLETALK: 1716 (void) printf("%s: atalk %d.%d; ", 1717 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1718 break; 1719 case AF_LINK: 1720 (void) printf("%s: link %s; ", 1721 which, link_ntoa(&su->sdl)); 1722 break; 1723 #ifndef SMALL 1724 #ifdef INET6 1725 case AF_INET6: 1726 (void) printf("%s: inet6 %s; ", 1727 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 1728 ntop_buf, sizeof(ntop_buf))); 1729 break; 1730 #endif 1731 case AF_ISO: 1732 (void) printf("%s: iso %s; ", 1733 which, iso_ntoa(&su->siso.siso_addr)); 1734 break; 1735 case AF_NS: 1736 (void) printf("%s: xns %s; ", 1737 which, ns_ntoa(su->sns.sns_addr)); 1738 break; 1739 #endif /* SMALL */ 1740 default: 1741 (void) printf("af %p: %s; ", 1742 which, any_ntoa(&su->sa)); 1743 } 1744 (void) fflush(stdout); 1745 } 1746 1747 /* States*/ 1748 #define VIRGIN 0 1749 #define GOTONE 1 1750 #define GOTTWO 2 1751 /* Inputs */ 1752 #define DIGIT (4*0) 1753 #define END (4*1) 1754 #define DELIM (4*2) 1755 1756 static void 1757 sockaddr(addr, sa) 1758 char *addr; 1759 struct sockaddr *sa; 1760 { 1761 char *cp = (char *)sa; 1762 int size = sa->sa_len; 1763 char *cplim = cp + size; 1764 int byte = 0, state = VIRGIN, new = 0; 1765 1766 (void) memset(cp, 0, size); 1767 cp++; 1768 do { 1769 if ((*addr >= '0') && (*addr <= '9')) { 1770 new = *addr - '0'; 1771 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1772 new = *addr - 'a' + 10; 1773 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1774 new = *addr - 'A' + 10; 1775 } else if (*addr == 0) 1776 state |= END; 1777 else 1778 state |= DELIM; 1779 addr++; 1780 switch (state /* | INPUT */) { 1781 case GOTTWO | DIGIT: 1782 *cp++ = byte; /*FALLTHROUGH*/ 1783 case VIRGIN | DIGIT: 1784 state = GOTONE; byte = new; continue; 1785 case GOTONE | DIGIT: 1786 state = GOTTWO; byte = new + (byte << 4); continue; 1787 default: /* | DELIM */ 1788 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1789 case GOTONE | END: 1790 case GOTTWO | END: 1791 *cp++ = byte; /* FALLTHROUGH */ 1792 case VIRGIN | END: 1793 break; 1794 } 1795 break; 1796 } while (cp < cplim); 1797 sa->sa_len = cp - (char *)sa; 1798 } 1799
Indexes created Fri Sep 26 20:09:58 GMT 2025