route.c revision 1.43
1 /* $NetBSD: route.c,v 1.43 2001/01/27 04:53:14 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 1.43 2001/01/27 04:53:14 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 #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; 135 136 static void 137 usage(cp) 138 char *cp; 139 { 140 extern char *__progname; 141 if (cp) 142 warnx("botched keyword: %s", cp); 143 (void) fprintf(stderr, 144 "Usage: %s [ -fnqv ] cmd [[ -<qualifers> ] args ]\n", __progname); 145 exit(1); 146 /* NOTREACHED */ 147 } 148 149 #define ROUNDUP(a) \ 150 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 151 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 152 153 int 154 main(argc, argv) 155 int argc; 156 char **argv; 157 { 158 int ch; 159 160 if (argc < 2) 161 usage(NULL); 162 163 while ((ch = getopt(argc, argv, "fnqvdt")) != -1) 164 switch(ch) { 165 case 'f': 166 doflush = 1; 167 break; 168 case 'n': 169 nflag = 1; 170 break; 171 case 'q': 172 qflag = 1; 173 break; 174 case 'v': 175 verbose = 1; 176 break; 177 case 't': 178 tflag = 1; 179 break; 180 case 'd': 181 debugonly = 1; 182 break; 183 case '?': 184 default: 185 usage(NULL); 186 } 187 argc -= optind; 188 argv += optind; 189 190 pid = getpid(); 191 if (tflag) 192 s = open("/dev/null", O_WRONLY, 0); 193 else 194 s = socket(PF_ROUTE, SOCK_RAW, 0); 195 if (s < 0) 196 err(1, "socket"); 197 198 if (*argv == NULL) { 199 if (doflush) 200 ch = K_FLUSH; 201 else 202 goto no_cmd; 203 } else 204 ch = keyword(*argv); 205 206 switch (ch) { 207 208 #ifndef SMALL 209 case K_GET: 210 #endif /* SMALL */ 211 case K_CHANGE: 212 case K_ADD: 213 case K_DELETE: 214 if (doflush) 215 flushroutes(1, argv); 216 newroute(argc, argv); 217 break; 218 219 case K_SHOW: 220 show(argc, argv); 221 break; 222 223 #ifndef SMALL 224 case K_MONITOR: 225 monitor(); 226 break; 227 228 #endif /* SMALL */ 229 case K_FLUSH: 230 flushroutes(argc, argv); 231 break; 232 233 no_cmd: 234 default: 235 usage(*argv); 236 return 1; 237 } 238 return 0; 239 } 240 241 /* 242 * Purge all entries in the routing tables not 243 * associated with network interfaces. 244 */ 245 static void 246 flushroutes(argc, argv) 247 int argc; 248 char *argv[]; 249 { 250 size_t needed; 251 int mib[6], rlen, seqno; 252 char *buf, *next, *lim; 253 struct rt_msghdr *rtm; 254 255 af = 0; 256 shutdown(s, 0); /* Don't want to read back our messages */ 257 if (argc > 1) { 258 argv++; 259 if (argc == 2 && **argv == '-') 260 switch (keyword(*argv + 1)) { 261 case K_INET: 262 af = AF_INET; 263 break; 264 #ifdef INET6 265 case K_INET6: 266 af = AF_INET6; 267 break; 268 #endif 269 case K_ATALK: 270 af = AF_APPLETALK; 271 break; 272 #ifndef SMALL 273 case K_XNS: 274 af = AF_NS; 275 break; 276 #endif /* SMALL */ 277 case K_LINK: 278 af = AF_LINK; 279 break; 280 #ifndef SMALL 281 case K_ISO: 282 case K_OSI: 283 af = AF_ISO; 284 break; 285 case K_X25: 286 af = AF_CCITT; 287 #endif /* SMALL */ 288 default: 289 goto bad; 290 } else 291 bad: usage(*argv); 292 } 293 mib[0] = CTL_NET; 294 mib[1] = PF_ROUTE; 295 mib[2] = 0; /* protocol */ 296 mib[3] = 0; /* wildcard address family */ 297 mib[4] = NET_RT_DUMP; 298 mib[5] = 0; /* no flags */ 299 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 300 err(1, "route-sysctl-estimate"); 301 if (needed == 0) 302 return; 303 if ((buf = malloc(needed)) == NULL) 304 err(1, "malloc"); 305 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 306 err(1, "actual retrieval of routing table"); 307 lim = buf + needed; 308 if (verbose) { 309 (void) printf("Examining routing table from sysctl\n"); 310 if (af) printf("(address family %s)\n", (*argv + 1)); 311 } 312 seqno = 0; /* ??? */ 313 for (next = buf; next < lim; next += rtm->rtm_msglen) { 314 rtm = (struct rt_msghdr *)next; 315 if (verbose) 316 print_rtmsg(rtm, rtm->rtm_msglen); 317 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 318 continue; 319 if (af) { 320 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 321 322 if (sa->sa_family != af) 323 continue; 324 } 325 if (debugonly) 326 continue; 327 rtm->rtm_type = RTM_DELETE; 328 rtm->rtm_seq = seqno; 329 rlen = write(s, next, rtm->rtm_msglen); 330 if (rlen < (int)rtm->rtm_msglen) { 331 warn("write to routing socket, got %d for rlen", rlen); 332 break; 333 } 334 seqno++; 335 if (qflag) 336 continue; 337 if (verbose) 338 print_rtmsg(rtm, rlen); 339 else { 340 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 341 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 342 routename(sa) : netname(sa)); 343 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 344 (void) printf("%-20.20s ", routename(sa)); 345 (void) printf("done\n"); 346 } 347 } 348 } 349 350 351 static char hexlist[] = "0123456789abcdef"; 352 353 static char * 354 any_ntoa(sa) 355 const struct sockaddr *sa; 356 { 357 static char obuf[64]; 358 const char *in; 359 char *out; 360 int len; 361 362 len = sa->sa_len; 363 in = sa->sa_data; 364 out = obuf; 365 366 do { 367 *out++ = hexlist[(*in >> 4) & 15]; 368 *out++ = hexlist[(*in++) & 15]; 369 *out++ = '.'; 370 } while (--len > 0); 371 out[-1] = '\0'; 372 return obuf; 373 } 374 375 376 char * 377 routename(sa) 378 struct sockaddr *sa; 379 { 380 char *cp; 381 static char line[50]; 382 struct hostent *hp; 383 static char domain[MAXHOSTNAMELEN + 1]; 384 static int first = 1; 385 struct in_addr in; 386 387 if (first) { 388 first = 0; 389 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 390 (cp = strchr(domain, '.'))) { 391 (void)strncpy(domain, cp + 1, sizeof(domain) - 1); 392 domain[sizeof(domain) - 1] = '\0'; 393 } else 394 domain[0] = 0; 395 } 396 397 if (sa->sa_len == 0) { 398 strncpy(line, "default", sizeof(line) - 1); 399 line[sizeof(line) - 1] = '\0'; 400 } else switch (sa->sa_family) { 401 402 case AF_INET: 403 in = ((struct sockaddr_in *)sa)->sin_addr; 404 405 cp = 0; 406 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 407 cp = "default"; 408 if (cp == 0 && !nflag) { 409 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 410 AF_INET); 411 if (hp) { 412 if ((cp = strchr(hp->h_name, '.')) && 413 !strcmp(cp + 1, domain)) 414 *cp = 0; 415 cp = hp->h_name; 416 } 417 } 418 if (cp) 419 (void)strncpy(line, cp, sizeof(line) - 1); 420 else 421 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 422 line[sizeof(line) - 1] = '\0'; 423 break; 424 425 case AF_LINK: 426 return (link_ntoa((struct sockaddr_dl *)sa)); 427 428 #ifndef SMALL 429 #ifdef INET6 430 case AF_INET6: 431 { 432 struct sockaddr_in6 sin6; 433 int niflags; 434 435 #ifdef NI_WITHSCOPEID 436 niflags = NI_WITHSCOPEID; 437 #else 438 niflags = 0; 439 #endif 440 if (nflag) 441 niflags |= NI_NUMERICHOST; 442 memset(&sin6, 0, sizeof(sin6)); 443 memcpy(&sin6, sa, sa->sa_len); 444 sin6.sin6_len = sizeof(struct sockaddr_in6); 445 sin6.sin6_family = AF_INET6; 446 #ifdef __KAME__ 447 if (sa->sa_len == sizeof(struct sockaddr_in6) && 448 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 449 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 450 sin6.sin6_scope_id == 0) { 451 sin6.sin6_scope_id = 452 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 453 sin6.sin6_addr.s6_addr[2] = 0; 454 sin6.sin6_addr.s6_addr[3] = 0; 455 } 456 #endif 457 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 458 line, sizeof(line), NULL, 0, niflags) != 0) 459 strncpy(line, "invalid", sizeof(line)); 460 break; 461 } 462 #endif 463 464 case AF_NS: 465 return (ns_print((struct sockaddr_ns *)sa)); 466 467 case AF_ISO: 468 (void)snprintf(line, sizeof line, "iso %s", 469 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 470 break; 471 #endif /* SMALL */ 472 473 case AF_APPLETALK: 474 (void) snprintf(line, sizeof(line), "atalk %d.%d", 475 ((struct sockaddr_at *)sa)->sat_addr.s_net, 476 ((struct sockaddr_at *)sa)->sat_addr.s_node); 477 break; 478 479 default: 480 (void)snprintf(line, sizeof line, "(%d) %s", 481 sa->sa_family, any_ntoa(sa)); 482 break; 483 484 } 485 return (line); 486 } 487 488 /* 489 * Return the name of the network whose address is given. 490 * The address is assumed to be that of a net or subnet, not a host. 491 */ 492 char * 493 netname(sa) 494 struct sockaddr *sa; 495 { 496 char *cp = 0; 497 static char line[50]; 498 struct netent *np = 0; 499 u_int32_t net, mask; 500 u_int32_t i; 501 int subnetshift; 502 struct in_addr in; 503 504 switch (sa->sa_family) { 505 506 case AF_INET: 507 in = ((struct sockaddr_in *)sa)->sin_addr; 508 i = ntohl(in.s_addr); 509 if (i == 0) 510 cp = "default"; 511 else if (!nflag) { 512 if (IN_CLASSA(i)) { 513 mask = IN_CLASSA_NET; 514 subnetshift = 8; 515 } else if (IN_CLASSB(i)) { 516 mask = IN_CLASSB_NET; 517 subnetshift = 8; 518 } else { 519 mask = IN_CLASSC_NET; 520 subnetshift = 4; 521 } 522 /* 523 * If there are more bits than the standard mask 524 * would suggest, subnets must be in use. 525 * Guess at the subnet mask, assuming reasonable 526 * width subnet fields. 527 */ 528 while (i &~ mask) 529 mask = (int32_t)mask >> subnetshift; 530 net = i & mask; 531 while ((mask & 1) == 0) 532 mask >>= 1, net >>= 1; 533 np = getnetbyaddr(net, AF_INET); 534 if (np) 535 cp = np->n_name; 536 } 537 if (cp) { 538 (void)strncpy(line, cp, sizeof(line) - 1); 539 line[sizeof(line) - 1] = '\0'; 540 } else { 541 #if 0 /* XXX - This is silly... */ 542 #define C(x) ((x) & 0xff) 543 if ((i & 0xffffff) == 0) 544 (void)snprintf(line, sizeof line, "%u", 545 C(i >> 24)); 546 else if ((i & 0xffff) == 0) 547 (void)snprintf(line, sizeof line, "%u.%u", 548 C(i >> 24), C(i >> 16)); 549 else if ((i & 0xff) == 0) 550 (void)snprintf(line, sizeof line, "%u.%u.%u", 551 C(i >> 24), C(i >> 16), C(i >> 8)); 552 else 553 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 554 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 555 #undef C 556 #else /* XXX */ 557 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 558 #endif /* XXX */ 559 } 560 break; 561 562 case AF_LINK: 563 return (link_ntoa((struct sockaddr_dl *)sa)); 564 565 #ifndef SMALL 566 #ifdef INET6 567 case AF_INET6: 568 { 569 struct sockaddr_in6 sin6; 570 int niflags; 571 572 #ifdef NI_WITHSCOPEID 573 niflags = NI_WITHSCOPEID; 574 #else 575 niflags = 0; 576 #endif 577 if (nflag) 578 niflags |= NI_NUMERICHOST; 579 memset(&sin6, 0, sizeof(sin6)); 580 memcpy(&sin6, sa, sa->sa_len); 581 sin6.sin6_len = sizeof(struct sockaddr_in6); 582 sin6.sin6_family = AF_INET6; 583 #ifdef __KAME__ 584 if (sa->sa_len == sizeof(struct sockaddr_in6) && 585 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 586 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 587 sin6.sin6_scope_id == 0) { 588 sin6.sin6_scope_id = 589 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 590 sin6.sin6_addr.s6_addr[2] = 0; 591 sin6.sin6_addr.s6_addr[3] = 0; 592 } 593 #endif 594 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 595 line, sizeof(line), NULL, 0, niflags) != 0) 596 strncpy(line, "invalid", sizeof(line)); 597 break; 598 } 599 #endif 600 601 case AF_NS: 602 return (ns_print((struct sockaddr_ns *)sa)); 603 604 case AF_ISO: 605 (void)snprintf(line, sizeof line, "iso %s", 606 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 607 break; 608 #endif /* SMALL */ 609 610 case AF_APPLETALK: 611 (void) snprintf(line, sizeof(line), "atalk %d.%d", 612 ((struct sockaddr_at *)sa)->sat_addr.s_net, 613 ((struct sockaddr_at *)sa)->sat_addr.s_node); 614 break; 615 616 default: 617 (void)snprintf(line, sizeof line, "af %d: %s", 618 sa->sa_family, any_ntoa(sa)); 619 break; 620 } 621 return (line); 622 } 623 624 static void 625 set_metric(value, key) 626 char *value; 627 int key; 628 { 629 int flag = 0; 630 u_long noval, *valp = &noval; 631 632 switch (key) { 633 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 634 caseof(K_MTU, RTV_MTU, rmx_mtu); 635 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 636 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 637 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 638 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 639 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 640 caseof(K_RTT, RTV_RTT, rmx_rtt); 641 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 642 } 643 rtm_inits |= flag; 644 if (lockrest || locking) 645 rt_metrics.rmx_locks |= flag; 646 if (locking) 647 locking = 0; 648 *valp = atoi(value); 649 } 650 651 static void 652 newroute(argc, argv) 653 int argc; 654 char **argv; 655 { 656 char *cmd, *dest = "", *gateway = ""; 657 const char *err; 658 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 659 int key; 660 struct hostent *hp = 0; 661 662 cmd = argv[0]; 663 af = 0; 664 if (*cmd != 'g') 665 shutdown(s, 0); /* Don't want to read back our messages */ 666 while (--argc > 0) { 667 if (**(++argv)== '-') { 668 switch (key = keyword(1 + *argv)) { 669 670 case K_SA: 671 af = PF_ROUTE; 672 aflen = sizeof(union sockunion); 673 break; 674 675 case K_ATALK: 676 af = AF_APPLETALK; 677 aflen = sizeof(struct sockaddr_at); 678 break; 679 680 case K_INET: 681 af = AF_INET; 682 aflen = sizeof(struct sockaddr_in); 683 break; 684 685 #ifdef INET6 686 case K_INET6: 687 af = AF_INET6; 688 aflen = sizeof(struct sockaddr_in6); 689 break; 690 #endif 691 692 case K_LINK: 693 af = AF_LINK; 694 aflen = sizeof(struct sockaddr_dl); 695 break; 696 697 #ifndef SMALL 698 case K_OSI: 699 case K_ISO: 700 af = AF_ISO; 701 aflen = sizeof(struct sockaddr_iso); 702 break; 703 704 case K_X25: 705 af = AF_CCITT; 706 aflen = sizeof(struct sockaddr_x25); 707 break; 708 709 case K_XNS: 710 af = AF_NS; 711 aflen = sizeof(struct sockaddr_ns); 712 break; 713 #endif /* SMALL */ 714 715 case K_IFACE: 716 case K_INTERFACE: 717 iflag++; 718 break; 719 case K_NOSTATIC: 720 flags &= ~RTF_STATIC; 721 break; 722 case K_LLINFO: 723 flags |= RTF_LLINFO; 724 break; 725 case K_LOCK: 726 locking = 1; 727 break; 728 case K_LOCKREST: 729 lockrest = 1; 730 break; 731 case K_HOST: 732 forcehost++; 733 break; 734 case K_REJECT: 735 flags |= RTF_REJECT; 736 break; 737 case K_BLACKHOLE: 738 flags |= RTF_BLACKHOLE; 739 break; 740 case K_CLONED: 741 flags |= RTF_CLONED; 742 break; 743 case K_PROTO1: 744 flags |= RTF_PROTO1; 745 break; 746 case K_PROTO2: 747 flags |= RTF_PROTO2; 748 break; 749 case K_CLONING: 750 flags |= RTF_CLONING; 751 break; 752 case K_XRESOLVE: 753 flags |= RTF_XRESOLVE; 754 break; 755 case K_STATIC: 756 flags |= RTF_STATIC; 757 break; 758 case K_IFA: 759 if (!--argc) 760 usage(1+*argv); 761 (void) getaddr(RTA_IFA, *++argv, 0); 762 break; 763 case K_IFP: 764 if (!--argc) 765 usage(1+*argv); 766 (void) getaddr(RTA_IFP, *++argv, 0); 767 break; 768 case K_GENMASK: 769 if (!--argc) 770 usage(1+*argv); 771 (void) getaddr(RTA_GENMASK, *++argv, 0); 772 break; 773 case K_GATEWAY: 774 if (!--argc) 775 usage(1+*argv); 776 (void) getaddr(RTA_GATEWAY, *++argv, 0); 777 break; 778 case K_DST: 779 if (!--argc) 780 usage(1+*argv); 781 ishost = getaddr(RTA_DST, *++argv, &hp); 782 dest = *argv; 783 break; 784 case K_NETMASK: 785 if (!--argc) 786 usage(1+*argv); 787 (void) getaddr(RTA_NETMASK, *++argv, 0); 788 /* FALLTHROUGH */ 789 case K_NET: 790 forcenet++; 791 break; 792 #ifdef INET6 793 case K_PREFIXLEN: 794 argc--; 795 if (prefixlen(*++argv) == 128) { 796 forcenet = 0; 797 ishost = 1; 798 } else { 799 forcenet = 1; 800 ishost = 0; 801 } 802 break; 803 #endif 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 extern short ns_bh[3]; 1079 struct sockaddr_ns *sms = &(so_mask.sns); 1080 memset(sms, 0, sizeof(*sms)); 1081 sms->sns_family = 0; 1082 sms->sns_len = 6; 1083 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1084 rtm_addrs |= RTA_NETMASK; 1085 } 1086 su->sns.sns_addr = ns_addr(s); 1087 return (!ns_nullhost(su->sns.sns_addr)); 1088 1089 case AF_OSI: 1090 su->siso.siso_addr = *iso_addr(s); 1091 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1092 char *cp = (char *)TSEL(&su->siso); 1093 su->siso.siso_nlen = 0; 1094 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1095 su->siso.siso_len = 1 + cp - (char *)su; 1096 } 1097 return (1); 1098 1099 case AF_CCITT: 1100 ccitt_addr(s, &su->sx25); 1101 return (which == RTA_DST ? x25_makemask() : 1); 1102 #endif /* SMALL */ 1103 1104 case PF_ROUTE: 1105 su->sa.sa_len = sizeof(*su); 1106 sockaddr(s, &su->sa); 1107 return (1); 1108 1109 case AF_APPLETALK: 1110 t = strchr (s, '.'); 1111 if (!t) { 1112 badataddr: 1113 errx(1, "bad address: %s", s); 1114 } 1115 val = atoi (s); 1116 if (val > 65535) 1117 goto badataddr; 1118 su->sat.sat_addr.s_net = val; 1119 val = atoi (t); 1120 if (val > 256) 1121 goto badataddr; 1122 su->sat.sat_addr.s_node = val; 1123 rtm_addrs |= RTA_NETMASK; 1124 return(forcehost || su->sat.sat_addr.s_node != 0); 1125 1126 case AF_LINK: 1127 link_addr(s, &su->sdl); 1128 return (1); 1129 1130 case AF_INET: 1131 default: 1132 break; 1133 } 1134 1135 if (hpp == NULL) 1136 hpp = &hp; 1137 *hpp = NULL; 1138 if (((val = inet_addr(s)) != INADDR_NONE) && 1139 (which != RTA_DST || forcenet == 0)) { 1140 su->sin.sin_addr.s_addr = val; 1141 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1142 return (1); 1143 else { 1144 val = ntohl(val); 1145 goto netdone; 1146 } 1147 } 1148 if ((val = inet_network(s)) != INADDR_NONE || 1149 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1150 netdone: 1151 if (which == RTA_DST) 1152 inet_makenetandmask(val, &su->sin); 1153 return (0); 1154 } 1155 hp = gethostbyname(s); 1156 if (hp) { 1157 *hpp = hp; 1158 su->sin.sin_family = hp->h_addrtype; 1159 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1160 return (1); 1161 } 1162 errx(1, "bad value: %s", s); 1163 } 1164 1165 #ifdef INET6 1166 int 1167 prefixlen(s) 1168 char *s; 1169 { 1170 int len = atoi(s), q, r; 1171 1172 rtm_addrs |= RTA_NETMASK; 1173 if (len < -1 || len > 129) { 1174 (void) fprintf(stderr, "%s: bad value\n", s); 1175 exit(1); 1176 } 1177 1178 q = len >> 3; 1179 r = len & 7; 1180 so_mask.sin6.sin6_family = AF_INET6; 1181 so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1182 memset((void *)&so_mask.sin6.sin6_addr, 0, 1183 sizeof(so_mask.sin6.sin6_addr)); 1184 if (q > 0) 1185 memset((void *)&so_mask.sin6.sin6_addr, 0xff, q); 1186 if (r > 0) 1187 *((u_char *)&so_mask.sin6.sin6_addr + q) = (0xff00 >> r) & 0xff; 1188 return(len); 1189 } 1190 #endif 1191 1192 #ifndef SMALL 1193 int 1194 x25_makemask() 1195 { 1196 char *cp; 1197 1198 if ((rtm_addrs & RTA_NETMASK) == 0) { 1199 rtm_addrs |= RTA_NETMASK; 1200 for (cp = (char *)&so_mask.sx25.x25_net; 1201 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1202 *cp = -1; 1203 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1204 } 1205 return 0; 1206 } 1207 1208 short ns_nullh[] = {0,0,0}; 1209 short ns_bh[] = {-1,-1,-1}; 1210 1211 char * 1212 ns_print(sns) 1213 struct sockaddr_ns *sns; 1214 { 1215 struct ns_addr work; 1216 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1217 u_short port; 1218 static char mybuf[50], cport[10], chost[25]; 1219 char *host = ""; 1220 char *p; 1221 u_char *q; 1222 1223 work = sns->sns_addr; 1224 port = ntohs(work.x_port); 1225 work.x_port = 0; 1226 net.net_e = work.x_net; 1227 if (ns_nullhost(work) && net.int32_t_e == 0) { 1228 if (!port) 1229 return ("*.*"); 1230 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1231 return (mybuf); 1232 } 1233 1234 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1235 host = "any"; 1236 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1237 host = "*"; 1238 else { 1239 q = work.x_host.c_host; 1240 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1241 q[0], q[1], q[2], q[3], q[4], q[5]); 1242 for (p = chost; *p == '0' && p < chost + 12; p++) 1243 /* void */; 1244 host = p; 1245 } 1246 if (port) 1247 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1248 else 1249 *cport = 0; 1250 1251 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1252 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1253 return (mybuf); 1254 } 1255 1256 static void 1257 interfaces() 1258 { 1259 size_t needed; 1260 int mib[6]; 1261 char *buf, *lim, *next; 1262 struct rt_msghdr *rtm; 1263 1264 mib[0] = CTL_NET; 1265 mib[1] = PF_ROUTE; 1266 mib[2] = 0; /* protocol */ 1267 mib[3] = 0; /* wildcard address family */ 1268 mib[4] = NET_RT_IFLIST; 1269 mib[5] = 0; /* no flags */ 1270 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1271 err(1, "route-sysctl-estimate"); 1272 if ((buf = malloc(needed)) == NULL) 1273 err(1, "malloc"); 1274 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1275 err(1, "actual retrieval of interface table"); 1276 lim = buf + needed; 1277 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1278 rtm = (struct rt_msghdr *)next; 1279 print_rtmsg(rtm, rtm->rtm_msglen); 1280 } 1281 } 1282 1283 static void 1284 monitor() 1285 { 1286 int n; 1287 char msg[2048]; 1288 1289 verbose = 1; 1290 if (debugonly) { 1291 interfaces(); 1292 exit(0); 1293 } 1294 for(;;) { 1295 time_t now; 1296 n = read(s, msg, 2048); 1297 now = time(NULL); 1298 (void) printf("got message of size %d on %s", n, ctime(&now)); 1299 print_rtmsg((struct rt_msghdr *)msg, n); 1300 } 1301 } 1302 1303 #endif /* SMALL */ 1304 1305 1306 struct { 1307 struct rt_msghdr m_rtm; 1308 char m_space[512]; 1309 } m_rtmsg; 1310 1311 static int 1312 rtmsg(cmd, flags) 1313 int cmd, flags; 1314 { 1315 static int seq; 1316 int rlen; 1317 char *cp = m_rtmsg.m_space; 1318 int l; 1319 1320 #define NEXTADDR(w, u) \ 1321 if (rtm_addrs & (w)) {\ 1322 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1323 if (verbose) sodump(&(u),"u");\ 1324 } 1325 1326 errno = 0; 1327 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1328 if (cmd == 'a') 1329 cmd = RTM_ADD; 1330 else if (cmd == 'c') 1331 cmd = RTM_CHANGE; 1332 else if (cmd == 'g') { 1333 #ifdef SMALL 1334 return (-1); 1335 #else /* SMALL */ 1336 cmd = RTM_GET; 1337 if (so_ifp.sa.sa_family == 0) { 1338 so_ifp.sa.sa_family = AF_LINK; 1339 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1340 rtm_addrs |= RTA_IFP; 1341 } 1342 #endif /* SMALL */ 1343 } else 1344 cmd = RTM_DELETE; 1345 #define rtm m_rtmsg.m_rtm 1346 rtm.rtm_type = cmd; 1347 rtm.rtm_flags = flags; 1348 rtm.rtm_version = RTM_VERSION; 1349 rtm.rtm_seq = ++seq; 1350 rtm.rtm_addrs = rtm_addrs; 1351 rtm.rtm_rmx = rt_metrics; 1352 rtm.rtm_inits = rtm_inits; 1353 1354 if (rtm_addrs & RTA_NETMASK) 1355 mask_addr(); 1356 NEXTADDR(RTA_DST, so_dst); 1357 NEXTADDR(RTA_GATEWAY, so_gate); 1358 NEXTADDR(RTA_NETMASK, so_mask); 1359 NEXTADDR(RTA_GENMASK, so_genmask); 1360 NEXTADDR(RTA_IFP, so_ifp); 1361 NEXTADDR(RTA_IFA, so_ifa); 1362 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1363 if (verbose) 1364 print_rtmsg(&rtm, l); 1365 if (debugonly) 1366 return (0); 1367 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1368 perror("writing to routing socket"); 1369 return (-1); 1370 } 1371 #ifndef SMALL 1372 if (cmd == RTM_GET) { 1373 do { 1374 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1375 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1376 if (l < 0) 1377 err(1, "read from routing socket"); 1378 else 1379 print_getmsg(&rtm, l); 1380 } 1381 #endif /* SMALL */ 1382 #undef rtm 1383 return (0); 1384 } 1385 1386 static void 1387 mask_addr() 1388 { 1389 int olen = so_mask.sa.sa_len; 1390 char *cp1 = olen + (char *)&so_mask, *cp2; 1391 1392 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1393 if (*--cp1 != 0) { 1394 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1395 break; 1396 } 1397 if ((rtm_addrs & RTA_DST) == 0) 1398 return; 1399 switch (so_dst.sa.sa_family) { 1400 case AF_INET: 1401 #ifdef INET6 1402 case AF_INET6: 1403 #endif 1404 case AF_APPLETALK: 1405 #ifndef SMALL 1406 case AF_NS: 1407 case AF_CCITT: 1408 #endif /* SMALL */ 1409 case 0: 1410 return; 1411 #ifndef SMALL 1412 case AF_ISO: 1413 olen = MIN(so_dst.siso.siso_nlen, 1414 MAX(so_mask.sa.sa_len - 6, 0)); 1415 break; 1416 #endif /* SMALL */ 1417 } 1418 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1419 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1420 while (cp2 > cp1) 1421 *--cp2 = 0; 1422 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1423 while (cp1 > so_dst.sa.sa_data) 1424 *--cp1 &= *--cp2; 1425 #ifndef SMALL 1426 switch (so_dst.sa.sa_family) { 1427 case AF_ISO: 1428 so_dst.siso.siso_nlen = olen; 1429 break; 1430 } 1431 #endif /* SMALL */ 1432 } 1433 1434 char *msgtypes[] = { 1435 "", 1436 "RTM_ADD: Add Route", 1437 "RTM_DELETE: Delete Route", 1438 "RTM_CHANGE: Change Metrics or flags", 1439 "RTM_GET: Report Metrics", 1440 "RTM_LOSING: Kernel Suspects Partitioning", 1441 "RTM_REDIRECT: Told to use different route", 1442 "RTM_MISS: Lookup failed on this address", 1443 "RTM_LOCK: fix specified metrics", 1444 "RTM_OLDADD: caused by SIOCADDRT", 1445 "RTM_OLDDEL: caused by SIOCDELRT", 1446 "RTM_RESOLVE: Route created by cloning", 1447 "RTM_NEWADDR: address being added to iface", 1448 "RTM_DELADDR: address being removed from iface", 1449 "RTM_OIFINFO: iface status change (pre-1.5)", 1450 "RTM_IFINFO: iface status change", 1451 "RTM_IFANNOUNCE: iface arrival/departure", 1452 0, 1453 }; 1454 1455 char metricnames[] = 1456 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1457 char routeflags[] = 1458 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1459 char ifnetflags[] = 1460 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1461 char addrnames[] = 1462 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1463 1464 static void 1465 print_rtmsg(rtm, msglen) 1466 struct rt_msghdr *rtm; 1467 int msglen; 1468 { 1469 struct if_msghdr *ifm; 1470 struct ifa_msghdr *ifam; 1471 struct if_announcemsghdr *ifan; 1472 1473 if (verbose == 0) 1474 return; 1475 if (rtm->rtm_version != RTM_VERSION) { 1476 (void) printf("routing message version %d not understood\n", 1477 rtm->rtm_version); 1478 return; 1479 } 1480 if (msgtypes[rtm->rtm_type]) 1481 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1482 else 1483 (void)printf("#%d: ", rtm->rtm_type); 1484 (void)printf("len %d, ", rtm->rtm_msglen); 1485 switch (rtm->rtm_type) { 1486 case RTM_IFINFO: 1487 ifm = (struct if_msghdr *)rtm; 1488 (void) printf("if# %d, flags:", ifm->ifm_index); 1489 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1490 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1491 break; 1492 case RTM_NEWADDR: 1493 case RTM_DELADDR: 1494 ifam = (struct ifa_msghdr *)rtm; 1495 (void) printf("metric %d, flags:", ifam->ifam_metric); 1496 bprintf(stdout, ifam->ifam_flags, routeflags); 1497 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1498 break; 1499 case RTM_IFANNOUNCE: 1500 ifan = (struct if_announcemsghdr *)rtm; 1501 (void) printf("if# %d, what: ", ifan->ifan_index); 1502 switch (ifan->ifan_what) { 1503 case IFAN_ARRIVAL: 1504 printf("arrival"); 1505 break; 1506 case IFAN_DEPARTURE: 1507 printf("departure"); 1508 break; 1509 default: 1510 printf("#%d", ifan->ifan_what); 1511 break; 1512 } 1513 printf("\n"); 1514 break; 1515 default: 1516 (void) printf("pid: %d, seq %d, errno %d, flags:", 1517 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1518 bprintf(stdout, rtm->rtm_flags, routeflags); 1519 pmsg_common(rtm); 1520 } 1521 } 1522 1523 #ifndef SMALL 1524 static void 1525 print_getmsg(rtm, msglen) 1526 struct rt_msghdr *rtm; 1527 int msglen; 1528 { 1529 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1530 struct sockaddr_dl *ifp = NULL; 1531 struct sockaddr *sa; 1532 char *cp; 1533 int i; 1534 1535 (void) printf(" route to: %s\n", 1536 routename((struct sockaddr *) &so_dst)); 1537 if (rtm->rtm_version != RTM_VERSION) { 1538 warnx("routing message version %d not understood", 1539 rtm->rtm_version); 1540 return; 1541 } 1542 if (rtm->rtm_msglen > msglen) { 1543 warnx("message length mismatch, in packet %d, returned %d\n", 1544 rtm->rtm_msglen, msglen); 1545 } 1546 if (rtm->rtm_errno) { 1547 warn("RTM_GET"); 1548 return; 1549 } 1550 cp = ((char *)(rtm + 1)); 1551 if (rtm->rtm_addrs) 1552 for (i = 1; i; i <<= 1) 1553 if (i & rtm->rtm_addrs) { 1554 sa = (struct sockaddr *)cp; 1555 switch (i) { 1556 case RTA_DST: 1557 dst = sa; 1558 break; 1559 case RTA_GATEWAY: 1560 gate = sa; 1561 break; 1562 case RTA_NETMASK: 1563 mask = sa; 1564 break; 1565 case RTA_IFP: 1566 if (sa->sa_family == AF_LINK && 1567 ((struct sockaddr_dl *)sa)->sdl_nlen) 1568 ifp = (struct sockaddr_dl *)sa; 1569 break; 1570 case RTA_IFA: 1571 ifa = sa; 1572 break; 1573 } 1574 ADVANCE(cp, sa); 1575 } 1576 if (dst && mask) 1577 mask->sa_family = dst->sa_family; /* XXX */ 1578 if (dst) 1579 (void)printf("destination: %s\n", routename(dst)); 1580 if (mask) { 1581 int savenflag = nflag; 1582 1583 nflag = 1; 1584 (void)printf(" mask: %s\n", routename(mask)); 1585 nflag = savenflag; 1586 } 1587 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1588 (void)printf(" gateway: %s\n", routename(gate)); 1589 if (ifa) 1590 (void)printf(" local addr: %s\n", routename(ifa)); 1591 if (ifp) 1592 (void)printf(" interface: %.*s\n", 1593 ifp->sdl_nlen, ifp->sdl_data); 1594 (void)printf(" flags: "); 1595 bprintf(stdout, rtm->rtm_flags, routeflags); 1596 1597 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1598 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1599 1600 (void) printf("\n%s\n", "\ 1601 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1602 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1603 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1604 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1605 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1606 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1607 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1608 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1609 if (rtm->rtm_rmx.rmx_expire) 1610 rtm->rtm_rmx.rmx_expire -= time(0); 1611 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1612 #undef lock 1613 #undef msec 1614 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1615 if (verbose) 1616 pmsg_common(rtm); 1617 else if (rtm->rtm_addrs &~ RTA_IGN) { 1618 (void) printf("sockaddrs: "); 1619 bprintf(stdout, rtm->rtm_addrs, addrnames); 1620 putchar('\n'); 1621 } 1622 #undef RTA_IGN 1623 } 1624 #endif /* SMALL */ 1625 1626 void 1627 pmsg_common(rtm) 1628 struct rt_msghdr *rtm; 1629 { 1630 (void) printf("\nlocks: "); 1631 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1632 (void) printf(" inits: "); 1633 bprintf(stdout, rtm->rtm_inits, metricnames); 1634 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1635 } 1636 1637 static void 1638 pmsg_addrs(cp, addrs) 1639 char *cp; 1640 int addrs; 1641 { 1642 struct sockaddr *sa; 1643 int i; 1644 1645 if (addrs == 0) 1646 return; 1647 (void) printf("\nsockaddrs: "); 1648 bprintf(stdout, addrs, addrnames); 1649 (void) putchar('\n'); 1650 for (i = 1; i; i <<= 1) 1651 if (i & addrs) { 1652 sa = (struct sockaddr *)cp; 1653 (void) printf(" %s", routename(sa)); 1654 ADVANCE(cp, sa); 1655 } 1656 (void) putchar('\n'); 1657 (void) fflush(stdout); 1658 } 1659 1660 static void 1661 bprintf(fp, b, s) 1662 FILE *fp; 1663 int b; 1664 u_char *s; 1665 { 1666 int i; 1667 int gotsome = 0; 1668 1669 if (b == 0) 1670 return; 1671 while ((i = *s++) != 0) { 1672 if (b & (1 << (i-1))) { 1673 if (gotsome == 0) 1674 i = '<'; 1675 else 1676 i = ','; 1677 (void) putc(i, fp); 1678 gotsome = 1; 1679 for (; (i = *s) > 32; s++) 1680 (void) putc(i, fp); 1681 } else 1682 while (*s > 32) 1683 s++; 1684 } 1685 if (gotsome) 1686 (void) putc('>', fp); 1687 } 1688 1689 static int 1690 keyword(cp) 1691 char *cp; 1692 { 1693 struct keytab *kt = keywords; 1694 1695 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1696 kt++; 1697 return kt->kt_i; 1698 } 1699 1700 static void 1701 sodump(su, which) 1702 sup su; 1703 char *which; 1704 { 1705 #ifdef INET6 1706 char ntop_buf[NI_MAXHOST]; 1707 #endif 1708 1709 switch (su->sa.sa_family) { 1710 case AF_INET: 1711 (void) printf("%s: inet %s; ", 1712 which, inet_ntoa(su->sin.sin_addr)); 1713 break; 1714 case AF_APPLETALK: 1715 (void) printf("%s: atalk %d.%d; ", 1716 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1717 break; 1718 case AF_LINK: 1719 (void) printf("%s: link %s; ", 1720 which, link_ntoa(&su->sdl)); 1721 break; 1722 #ifndef SMALL 1723 #ifdef INET6 1724 case AF_INET6: 1725 (void) printf("%s: inet6 %s; ", 1726 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 1727 ntop_buf, sizeof(ntop_buf))); 1728 break; 1729 #endif 1730 case AF_ISO: 1731 (void) printf("%s: iso %s; ", 1732 which, iso_ntoa(&su->siso.siso_addr)); 1733 break; 1734 case AF_NS: 1735 (void) printf("%s: xns %s; ", 1736 which, ns_ntoa(su->sns.sns_addr)); 1737 break; 1738 #endif /* SMALL */ 1739 default: 1740 (void) printf("af %p: %s; ", 1741 which, any_ntoa(&su->sa)); 1742 } 1743 (void) fflush(stdout); 1744 } 1745 1746 /* States*/ 1747 #define VIRGIN 0 1748 #define GOTONE 1 1749 #define GOTTWO 2 1750 /* Inputs */ 1751 #define DIGIT (4*0) 1752 #define END (4*1) 1753 #define DELIM (4*2) 1754 1755 static void 1756 sockaddr(addr, sa) 1757 char *addr; 1758 struct sockaddr *sa; 1759 { 1760 char *cp = (char *)sa; 1761 int size = sa->sa_len; 1762 char *cplim = cp + size; 1763 int byte = 0, state = VIRGIN, new = 0; 1764 1765 (void) memset(cp, 0, size); 1766 cp++; 1767 do { 1768 if ((*addr >= '0') && (*addr <= '9')) { 1769 new = *addr - '0'; 1770 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1771 new = *addr - 'a' + 10; 1772 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1773 new = *addr - 'A' + 10; 1774 } else if (*addr == 0) 1775 state |= END; 1776 else 1777 state |= DELIM; 1778 addr++; 1779 switch (state /* | INPUT */) { 1780 case GOTTWO | DIGIT: 1781 *cp++ = byte; /*FALLTHROUGH*/ 1782 case VIRGIN | DIGIT: 1783 state = GOTONE; byte = new; continue; 1784 case GOTONE | DIGIT: 1785 state = GOTTWO; byte = new + (byte << 4); continue; 1786 default: /* | DELIM */ 1787 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1788 case GOTONE | END: 1789 case GOTTWO | END: 1790 *cp++ = byte; /* FALLTHROUGH */ 1791 case VIRGIN | END: 1792 break; 1793 } 1794 break; 1795 } while (cp < cplim); 1796 sa->sa_len = cp - (char *)sa; 1797 } 1798
Indexes created Sun Sep 28 16:09:52 GMT 2025