route.c revision 1.40
1 /* $NetBSD: route.c,v 1.40 2001/01/27 03:20:29 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 1.40 2001/01/27 03:20:29 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_PROTO1: 741 flags |= RTF_PROTO1; 742 break; 743 case K_PROTO2: 744 flags |= RTF_PROTO2; 745 break; 746 case K_CLONING: 747 flags |= RTF_CLONING; 748 break; 749 case K_XRESOLVE: 750 flags |= RTF_XRESOLVE; 751 break; 752 case K_STATIC: 753 flags |= RTF_STATIC; 754 break; 755 case K_IFA: 756 if (!--argc) 757 usage(1+*argv); 758 (void) getaddr(RTA_IFA, *++argv, 0); 759 break; 760 case K_IFP: 761 if (!--argc) 762 usage(1+*argv); 763 (void) getaddr(RTA_IFP, *++argv, 0); 764 break; 765 case K_GENMASK: 766 if (!--argc) 767 usage(1+*argv); 768 (void) getaddr(RTA_GENMASK, *++argv, 0); 769 break; 770 case K_GATEWAY: 771 if (!--argc) 772 usage(1+*argv); 773 (void) getaddr(RTA_GATEWAY, *++argv, 0); 774 break; 775 case K_DST: 776 if (!--argc) 777 usage(1+*argv); 778 ishost = getaddr(RTA_DST, *++argv, &hp); 779 dest = *argv; 780 break; 781 case K_NETMASK: 782 if (!--argc) 783 usage(1+*argv); 784 (void) getaddr(RTA_NETMASK, *++argv, 0); 785 /* FALLTHROUGH */ 786 case K_NET: 787 forcenet++; 788 break; 789 #ifdef INET6 790 case K_PREFIXLEN: 791 argc--; 792 if (prefixlen(*++argv) == 128) { 793 forcenet = 0; 794 ishost = 1; 795 } else { 796 forcenet = 1; 797 ishost = 0; 798 } 799 break; 800 #endif 801 case K_MTU: 802 case K_HOPCOUNT: 803 case K_EXPIRE: 804 case K_RECVPIPE: 805 case K_SENDPIPE: 806 case K_SSTHRESH: 807 case K_RTT: 808 case K_RTTVAR: 809 if (!--argc) 810 usage(1+*argv); 811 set_metric(*++argv, key); 812 break; 813 default: 814 usage(1+*argv); 815 } 816 } else { 817 if ((rtm_addrs & RTA_DST) == 0) { 818 dest = *argv; 819 ishost = getaddr(RTA_DST, *argv, &hp); 820 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 821 gateway = *argv; 822 (void) getaddr(RTA_GATEWAY, *argv, &hp); 823 } else { 824 int ret = atoi(*argv); 825 826 if (ret == 0) { 827 if (!qflag && strcmp(*argv, "0") == 0) 828 warnx("%s, %s", 829 "old usage of trailing 0", 830 "assuming route to if"); 831 else 832 usage((char *)NULL); 833 iflag = 1; 834 continue; 835 } else if (ret > 0 && ret < 10) { 836 if (!qflag) { 837 warnx("%s, %s", 838 "old usage of trailing digit", 839 "assuming route via gateway"); 840 } 841 iflag = 0; 842 continue; 843 } 844 (void) getaddr(RTA_NETMASK, *argv, 0); 845 } 846 } 847 } 848 if (forcehost) 849 ishost = 1; 850 if (forcenet) 851 ishost = 0; 852 flags |= RTF_UP; 853 if (ishost) 854 flags |= RTF_HOST; 855 if (iflag == 0) 856 flags |= RTF_GATEWAY; 857 for (attempts = 1; ; attempts++) { 858 errno = 0; 859 if ((ret = rtmsg(*cmd, flags)) == 0) 860 break; 861 if (errno != ENETUNREACH && errno != ESRCH) 862 break; 863 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 864 hp->h_addr_list++; 865 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 866 hp->h_length); 867 } else 868 break; 869 } 870 if (*cmd == 'g') 871 exit(0); 872 oerrno = errno; 873 if (!qflag) { 874 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 875 if (*gateway) { 876 (void) printf(": gateway %s", gateway); 877 if (attempts > 1 && ret == 0 && af == AF_INET) 878 (void) printf(" (%s)", 879 inet_ntoa(so_gate.sin.sin_addr)); 880 } 881 if (ret == 0) 882 (void) printf("\n"); 883 } 884 if (ret != 0) { 885 switch (oerrno) { 886 case ESRCH: 887 err = "not in table"; 888 break; 889 case EBUSY: 890 err = "entry in use"; 891 break; 892 case ENOBUFS: 893 err = "routing table overflow"; 894 break; 895 default: 896 err = strerror(oerrno); 897 break; 898 } 899 (void) printf(": %s\n", err); 900 } 901 } 902 903 static void 904 inet_makenetandmask(net, sin) 905 u_int32_t net; 906 struct sockaddr_in *sin; 907 { 908 u_int32_t addr, mask = 0; 909 char *cp; 910 911 rtm_addrs |= RTA_NETMASK; 912 if (net == 0) 913 mask = addr = 0; 914 else if (net < 128) { 915 addr = net << IN_CLASSA_NSHIFT; 916 mask = IN_CLASSA_NET; 917 } else if (net < 65536) { 918 addr = net << IN_CLASSB_NSHIFT; 919 mask = IN_CLASSB_NET; 920 } else if (net < 16777216L) { 921 addr = net << IN_CLASSC_NSHIFT; 922 mask = IN_CLASSC_NET; 923 } else { 924 addr = net; 925 if ((addr & IN_CLASSA_HOST) == 0) 926 mask = IN_CLASSA_NET; 927 else if ((addr & IN_CLASSB_HOST) == 0) 928 mask = IN_CLASSB_NET; 929 else if ((addr & IN_CLASSC_HOST) == 0) 930 mask = IN_CLASSC_NET; 931 else 932 mask = -1; 933 } 934 sin->sin_addr.s_addr = htonl(addr); 935 sin = &so_mask.sin; 936 sin->sin_addr.s_addr = htonl(mask); 937 sin->sin_len = 0; 938 sin->sin_family = 0; 939 cp = (char *)(&sin->sin_addr + 1); 940 while (*--cp == 0 && cp > (char *)sin) 941 ; 942 sin->sin_len = 1 + cp - (char *)sin; 943 } 944 945 #ifdef INET6 946 /* 947 * XXX the function may need more improvement... 948 */ 949 static void 950 inet6_makenetandmask(sin6) 951 struct sockaddr_in6 *sin6; 952 { 953 char *plen; 954 struct in6_addr in6; 955 956 plen = NULL; 957 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 958 sin6->sin6_scope_id == 0) { 959 plen = "0"; 960 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 961 /* aggregatable global unicast - RFC2374 */ 962 memset(&in6, 0, sizeof(in6)); 963 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 964 plen = "64"; 965 else 966 plen = "128"; 967 } 968 969 if (plen) { 970 rtm_addrs |= RTA_NETMASK; 971 prefixlen(plen); 972 } 973 } 974 #endif 975 976 /* 977 * Interpret an argument as a network address of some kind, 978 * returning 1 if a host address, 0 if a network address. 979 */ 980 static int 981 getaddr(which, s, hpp) 982 int which; 983 char *s; 984 struct hostent **hpp; 985 { 986 sup su; 987 struct hostent *hp; 988 struct netent *np; 989 u_int32_t val; 990 char *t; 991 int afamily; /* local copy of af so we can change it */ 992 993 if (af == 0) { 994 af = AF_INET; 995 aflen = sizeof(struct sockaddr_in); 996 } 997 afamily = af; 998 rtm_addrs |= which; 999 switch (which) { 1000 case RTA_DST: 1001 su = &so_dst; 1002 break; 1003 case RTA_GATEWAY: 1004 su = &so_gate; 1005 break; 1006 case RTA_NETMASK: 1007 su = &so_mask; 1008 break; 1009 case RTA_GENMASK: 1010 su = &so_genmask; 1011 break; 1012 case RTA_IFP: 1013 su = &so_ifp; 1014 afamily = AF_LINK; 1015 break; 1016 case RTA_IFA: 1017 su = &so_ifa; 1018 su->sa.sa_family = af; 1019 break; 1020 default: 1021 su = NULL; 1022 usage("Internal Error"); 1023 /*NOTREACHED*/ 1024 } 1025 su->sa.sa_len = aflen; 1026 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1027 if (strcmp(s, "default") == 0) { 1028 switch (which) { 1029 case RTA_DST: 1030 forcenet++; 1031 (void) getaddr(RTA_NETMASK, s, 0); 1032 break; 1033 case RTA_NETMASK: 1034 case RTA_GENMASK: 1035 su->sa.sa_len = 0; 1036 } 1037 return (0); 1038 } 1039 switch (afamily) { 1040 #ifndef SMALL 1041 #ifdef INET6 1042 case AF_INET6: 1043 { 1044 struct addrinfo hints, *res; 1045 1046 memset(&hints, 0, sizeof(hints)); 1047 hints.ai_family = afamily; /*AF_INET6*/ 1048 hints.ai_flags = AI_NUMERICHOST; 1049 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1050 if (getaddrinfo(s, "0", &hints, &res) != 0 || 1051 res->ai_family != AF_INET6 || 1052 res->ai_addrlen != sizeof(su->sin6)) { 1053 (void) fprintf(stderr, "%s: bad value\n", s); 1054 exit(1); 1055 } 1056 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1057 #ifdef __KAME__ 1058 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1059 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1060 su->sin6.sin6_scope_id) { 1061 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1062 htons(su->sin6.sin6_scope_id); 1063 su->sin6.sin6_scope_id = 0; 1064 } 1065 #endif 1066 if (which == RTA_DST) 1067 inet6_makenetandmask(&su->sin6); 1068 freeaddrinfo(res); 1069 return 0; 1070 } 1071 #endif 1072 1073 case AF_NS: 1074 if (which == RTA_DST) { 1075 extern short ns_bh[3]; 1076 struct sockaddr_ns *sms = &(so_mask.sns); 1077 memset(sms, 0, sizeof(*sms)); 1078 sms->sns_family = 0; 1079 sms->sns_len = 6; 1080 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1081 rtm_addrs |= RTA_NETMASK; 1082 } 1083 su->sns.sns_addr = ns_addr(s); 1084 return (!ns_nullhost(su->sns.sns_addr)); 1085 1086 case AF_OSI: 1087 su->siso.siso_addr = *iso_addr(s); 1088 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1089 char *cp = (char *)TSEL(&su->siso); 1090 su->siso.siso_nlen = 0; 1091 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1092 su->siso.siso_len = 1 + cp - (char *)su; 1093 } 1094 return (1); 1095 1096 case AF_CCITT: 1097 ccitt_addr(s, &su->sx25); 1098 return (which == RTA_DST ? x25_makemask() : 1); 1099 #endif /* SMALL */ 1100 1101 case PF_ROUTE: 1102 su->sa.sa_len = sizeof(*su); 1103 sockaddr(s, &su->sa); 1104 return (1); 1105 1106 case AF_APPLETALK: 1107 t = strchr (s, '.'); 1108 if (!t) { 1109 badataddr: 1110 errx(1, "bad address: %s", s); 1111 } 1112 val = atoi (s); 1113 if (val > 65535) 1114 goto badataddr; 1115 su->sat.sat_addr.s_net = val; 1116 val = atoi (t); 1117 if (val > 256) 1118 goto badataddr; 1119 su->sat.sat_addr.s_node = val; 1120 rtm_addrs |= RTA_NETMASK; 1121 return(forcehost || su->sat.sat_addr.s_node != 0); 1122 1123 case AF_LINK: 1124 link_addr(s, &su->sdl); 1125 return (1); 1126 1127 case AF_INET: 1128 default: 1129 break; 1130 } 1131 1132 if (hpp == NULL) 1133 hpp = &hp; 1134 *hpp = NULL; 1135 if (((val = inet_addr(s)) != INADDR_NONE) && 1136 (which != RTA_DST || forcenet == 0)) { 1137 su->sin.sin_addr.s_addr = val; 1138 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1139 return (1); 1140 else { 1141 val = ntohl(val); 1142 goto netdone; 1143 } 1144 } 1145 if ((val = inet_network(s)) != INADDR_NONE || 1146 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1147 netdone: 1148 if (which == RTA_DST) 1149 inet_makenetandmask(val, &su->sin); 1150 return (0); 1151 } 1152 hp = gethostbyname(s); 1153 if (hp) { 1154 *hpp = hp; 1155 su->sin.sin_family = hp->h_addrtype; 1156 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1157 return (1); 1158 } 1159 errx(1, "bad value: %s", s); 1160 } 1161 1162 #ifdef INET6 1163 int 1164 prefixlen(s) 1165 char *s; 1166 { 1167 int len = atoi(s), q, r; 1168 1169 rtm_addrs |= RTA_NETMASK; 1170 if (len < -1 || len > 129) { 1171 (void) fprintf(stderr, "%s: bad value\n", s); 1172 exit(1); 1173 } 1174 1175 q = len >> 3; 1176 r = len & 7; 1177 so_mask.sin6.sin6_family = AF_INET6; 1178 so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1179 memset((void *)&so_mask.sin6.sin6_addr, 0, 1180 sizeof(so_mask.sin6.sin6_addr)); 1181 if (q > 0) 1182 memset((void *)&so_mask.sin6.sin6_addr, 0xff, q); 1183 if (r > 0) 1184 *((u_char *)&so_mask.sin6.sin6_addr + q) = (0xff00 >> r) & 0xff; 1185 return(len); 1186 } 1187 #endif 1188 1189 #ifndef SMALL 1190 int 1191 x25_makemask() 1192 { 1193 char *cp; 1194 1195 if ((rtm_addrs & RTA_NETMASK) == 0) { 1196 rtm_addrs |= RTA_NETMASK; 1197 for (cp = (char *)&so_mask.sx25.x25_net; 1198 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1199 *cp = -1; 1200 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1201 } 1202 return 0; 1203 } 1204 1205 short ns_nullh[] = {0,0,0}; 1206 short ns_bh[] = {-1,-1,-1}; 1207 1208 char * 1209 ns_print(sns) 1210 struct sockaddr_ns *sns; 1211 { 1212 struct ns_addr work; 1213 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1214 u_short port; 1215 static char mybuf[50], cport[10], chost[25]; 1216 char *host = ""; 1217 char *p; 1218 u_char *q; 1219 1220 work = sns->sns_addr; 1221 port = ntohs(work.x_port); 1222 work.x_port = 0; 1223 net.net_e = work.x_net; 1224 if (ns_nullhost(work) && net.int32_t_e == 0) { 1225 if (!port) 1226 return ("*.*"); 1227 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1228 return (mybuf); 1229 } 1230 1231 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1232 host = "any"; 1233 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1234 host = "*"; 1235 else { 1236 q = work.x_host.c_host; 1237 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1238 q[0], q[1], q[2], q[3], q[4], q[5]); 1239 for (p = chost; *p == '0' && p < chost + 12; p++) 1240 /* void */; 1241 host = p; 1242 } 1243 if (port) 1244 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1245 else 1246 *cport = 0; 1247 1248 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1249 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1250 return (mybuf); 1251 } 1252 1253 static void 1254 interfaces() 1255 { 1256 size_t needed; 1257 int mib[6]; 1258 char *buf, *lim, *next; 1259 struct rt_msghdr *rtm; 1260 1261 mib[0] = CTL_NET; 1262 mib[1] = PF_ROUTE; 1263 mib[2] = 0; /* protocol */ 1264 mib[3] = 0; /* wildcard address family */ 1265 mib[4] = NET_RT_IFLIST; 1266 mib[5] = 0; /* no flags */ 1267 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1268 err(1, "route-sysctl-estimate"); 1269 if ((buf = malloc(needed)) == NULL) 1270 err(1, "malloc"); 1271 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1272 err(1, "actual retrieval of interface table"); 1273 lim = buf + needed; 1274 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1275 rtm = (struct rt_msghdr *)next; 1276 print_rtmsg(rtm, rtm->rtm_msglen); 1277 } 1278 } 1279 1280 static void 1281 monitor() 1282 { 1283 int n; 1284 char msg[2048]; 1285 1286 verbose = 1; 1287 if (debugonly) { 1288 interfaces(); 1289 exit(0); 1290 } 1291 for(;;) { 1292 time_t now; 1293 n = read(s, msg, 2048); 1294 now = time(NULL); 1295 (void) printf("got message of size %d on %s", n, ctime(&now)); 1296 print_rtmsg((struct rt_msghdr *)msg, n); 1297 } 1298 } 1299 1300 #endif /* SMALL */ 1301 1302 1303 struct { 1304 struct rt_msghdr m_rtm; 1305 char m_space[512]; 1306 } m_rtmsg; 1307 1308 static int 1309 rtmsg(cmd, flags) 1310 int cmd, flags; 1311 { 1312 static int seq; 1313 int rlen; 1314 char *cp = m_rtmsg.m_space; 1315 int l; 1316 1317 #define NEXTADDR(w, u) \ 1318 if (rtm_addrs & (w)) {\ 1319 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1320 if (verbose) sodump(&(u),"u");\ 1321 } 1322 1323 errno = 0; 1324 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1325 if (cmd == 'a') 1326 cmd = RTM_ADD; 1327 else if (cmd == 'c') 1328 cmd = RTM_CHANGE; 1329 else if (cmd == 'g') { 1330 #ifdef SMALL 1331 return (-1); 1332 #else /* SMALL */ 1333 cmd = RTM_GET; 1334 if (so_ifp.sa.sa_family == 0) { 1335 so_ifp.sa.sa_family = AF_LINK; 1336 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1337 rtm_addrs |= RTA_IFP; 1338 } 1339 #endif /* SMALL */ 1340 } else 1341 cmd = RTM_DELETE; 1342 #define rtm m_rtmsg.m_rtm 1343 rtm.rtm_type = cmd; 1344 rtm.rtm_flags = flags; 1345 rtm.rtm_version = RTM_VERSION; 1346 rtm.rtm_seq = ++seq; 1347 rtm.rtm_addrs = rtm_addrs; 1348 rtm.rtm_rmx = rt_metrics; 1349 rtm.rtm_inits = rtm_inits; 1350 1351 if (rtm_addrs & RTA_NETMASK) 1352 mask_addr(); 1353 NEXTADDR(RTA_DST, so_dst); 1354 NEXTADDR(RTA_GATEWAY, so_gate); 1355 NEXTADDR(RTA_NETMASK, so_mask); 1356 NEXTADDR(RTA_GENMASK, so_genmask); 1357 NEXTADDR(RTA_IFP, so_ifp); 1358 NEXTADDR(RTA_IFA, so_ifa); 1359 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1360 if (verbose) 1361 print_rtmsg(&rtm, l); 1362 if (debugonly) 1363 return (0); 1364 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1365 perror("writing to routing socket"); 1366 return (-1); 1367 } 1368 #ifndef SMALL 1369 if (cmd == RTM_GET) { 1370 do { 1371 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1372 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1373 if (l < 0) 1374 err(1, "read from routing socket"); 1375 else 1376 print_getmsg(&rtm, l); 1377 } 1378 #endif /* SMALL */ 1379 #undef rtm 1380 return (0); 1381 } 1382 1383 static void 1384 mask_addr() 1385 { 1386 int olen = so_mask.sa.sa_len; 1387 char *cp1 = olen + (char *)&so_mask, *cp2; 1388 1389 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1390 if (*--cp1 != 0) { 1391 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1392 break; 1393 } 1394 if ((rtm_addrs & RTA_DST) == 0) 1395 return; 1396 switch (so_dst.sa.sa_family) { 1397 case AF_INET: 1398 #ifdef INET6 1399 case AF_INET6: 1400 #endif 1401 case AF_APPLETALK: 1402 #ifndef SMALL 1403 case AF_NS: 1404 case AF_CCITT: 1405 #endif /* SMALL */ 1406 case 0: 1407 return; 1408 #ifndef SMALL 1409 case AF_ISO: 1410 olen = MIN(so_dst.siso.siso_nlen, 1411 MAX(so_mask.sa.sa_len - 6, 0)); 1412 break; 1413 #endif /* SMALL */ 1414 } 1415 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1416 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1417 while (cp2 > cp1) 1418 *--cp2 = 0; 1419 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1420 while (cp1 > so_dst.sa.sa_data) 1421 *--cp1 &= *--cp2; 1422 #ifndef SMALL 1423 switch (so_dst.sa.sa_family) { 1424 case AF_ISO: 1425 so_dst.siso.siso_nlen = olen; 1426 break; 1427 } 1428 #endif /* SMALL */ 1429 } 1430 1431 char *msgtypes[] = { 1432 "", 1433 "RTM_ADD: Add Route", 1434 "RTM_DELETE: Delete Route", 1435 "RTM_CHANGE: Change Metrics or flags", 1436 "RTM_GET: Report Metrics", 1437 "RTM_LOSING: Kernel Suspects Partitioning", 1438 "RTM_REDIRECT: Told to use different route", 1439 "RTM_MISS: Lookup failed on this address", 1440 "RTM_LOCK: fix specified metrics", 1441 "RTM_OLDADD: caused by SIOCADDRT", 1442 "RTM_OLDDEL: caused by SIOCDELRT", 1443 "RTM_RESOLVE: Route created by cloning", 1444 "RTM_NEWADDR: address being added to iface", 1445 "RTM_DELADDR: address being removed from iface", 1446 "RTM_OIFINFO: iface status change (pre-1.5)", 1447 "RTM_IFINFO: iface status change", 1448 "RTM_IFANNOUNCE: iface arrival/departure", 1449 0, 1450 }; 1451 1452 char metricnames[] = 1453 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1454 char routeflags[] = 1455 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\017PROTO2\020PROTO1"; 1456 char ifnetflags[] = 1457 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1458 char addrnames[] = 1459 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1460 1461 static void 1462 print_rtmsg(rtm, msglen) 1463 struct rt_msghdr *rtm; 1464 int msglen; 1465 { 1466 struct if_msghdr *ifm; 1467 struct ifa_msghdr *ifam; 1468 struct if_announcemsghdr *ifan; 1469 1470 if (verbose == 0) 1471 return; 1472 if (rtm->rtm_version != RTM_VERSION) { 1473 (void) printf("routing message version %d not understood\n", 1474 rtm->rtm_version); 1475 return; 1476 } 1477 if (msgtypes[rtm->rtm_type]) 1478 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1479 else 1480 (void)printf("#%d: ", rtm->rtm_type); 1481 (void)printf("len %d, ", rtm->rtm_msglen); 1482 switch (rtm->rtm_type) { 1483 case RTM_IFINFO: 1484 ifm = (struct if_msghdr *)rtm; 1485 (void) printf("if# %d, flags:", ifm->ifm_index); 1486 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1487 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1488 break; 1489 case RTM_NEWADDR: 1490 case RTM_DELADDR: 1491 ifam = (struct ifa_msghdr *)rtm; 1492 (void) printf("metric %d, flags:", ifam->ifam_metric); 1493 bprintf(stdout, ifam->ifam_flags, routeflags); 1494 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1495 break; 1496 case RTM_IFANNOUNCE: 1497 ifan = (struct if_announcemsghdr *)rtm; 1498 (void) printf("if# %d, what: ", ifan->ifan_index); 1499 switch (ifan->ifan_what) { 1500 case IFAN_ARRIVAL: 1501 printf("arrival"); 1502 break; 1503 case IFAN_DEPARTURE: 1504 printf("departure"); 1505 break; 1506 default: 1507 printf("#%d", ifan->ifan_what); 1508 break; 1509 } 1510 printf("\n"); 1511 break; 1512 default: 1513 (void) printf("pid: %d, seq %d, errno %d, flags:", 1514 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1515 bprintf(stdout, rtm->rtm_flags, routeflags); 1516 pmsg_common(rtm); 1517 } 1518 } 1519 1520 #ifndef SMALL 1521 static void 1522 print_getmsg(rtm, msglen) 1523 struct rt_msghdr *rtm; 1524 int msglen; 1525 { 1526 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1527 struct sockaddr_dl *ifp = NULL; 1528 struct sockaddr *sa; 1529 char *cp; 1530 int i; 1531 1532 (void) printf(" route to: %s\n", 1533 routename((struct sockaddr *) &so_dst)); 1534 if (rtm->rtm_version != RTM_VERSION) { 1535 warnx("routing message version %d not understood", 1536 rtm->rtm_version); 1537 return; 1538 } 1539 if (rtm->rtm_msglen > msglen) { 1540 warnx("message length mismatch, in packet %d, returned %d\n", 1541 rtm->rtm_msglen, msglen); 1542 } 1543 if (rtm->rtm_errno) { 1544 warn("RTM_GET"); 1545 return; 1546 } 1547 cp = ((char *)(rtm + 1)); 1548 if (rtm->rtm_addrs) 1549 for (i = 1; i; i <<= 1) 1550 if (i & rtm->rtm_addrs) { 1551 sa = (struct sockaddr *)cp; 1552 switch (i) { 1553 case RTA_DST: 1554 dst = sa; 1555 break; 1556 case RTA_GATEWAY: 1557 gate = sa; 1558 break; 1559 case RTA_NETMASK: 1560 mask = sa; 1561 break; 1562 case RTA_IFP: 1563 if (sa->sa_family == AF_LINK && 1564 ((struct sockaddr_dl *)sa)->sdl_nlen) 1565 ifp = (struct sockaddr_dl *)sa; 1566 break; 1567 case RTA_IFA: 1568 ifa = sa; 1569 break; 1570 } 1571 ADVANCE(cp, sa); 1572 } 1573 if (dst && mask) 1574 mask->sa_family = dst->sa_family; /* XXX */ 1575 if (dst) 1576 (void)printf("destination: %s\n", routename(dst)); 1577 if (mask) { 1578 int savenflag = nflag; 1579 1580 nflag = 1; 1581 (void)printf(" mask: %s\n", routename(mask)); 1582 nflag = savenflag; 1583 } 1584 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1585 (void)printf(" gateway: %s\n", routename(gate)); 1586 if (ifa) 1587 (void)printf(" local addr: %s\n", routename(ifa)); 1588 if (ifp) 1589 (void)printf(" interface: %.*s\n", 1590 ifp->sdl_nlen, ifp->sdl_data); 1591 (void)printf(" flags: "); 1592 bprintf(stdout, rtm->rtm_flags, routeflags); 1593 1594 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1595 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1596 1597 (void) printf("\n%s\n", "\ 1598 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1599 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1600 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1601 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1602 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1603 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1604 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1605 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1606 if (rtm->rtm_rmx.rmx_expire) 1607 rtm->rtm_rmx.rmx_expire -= time(0); 1608 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1609 #undef lock 1610 #undef msec 1611 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1612 if (verbose) 1613 pmsg_common(rtm); 1614 else if (rtm->rtm_addrs &~ RTA_IGN) { 1615 (void) printf("sockaddrs: "); 1616 bprintf(stdout, rtm->rtm_addrs, addrnames); 1617 putchar('\n'); 1618 } 1619 #undef RTA_IGN 1620 } 1621 #endif /* SMALL */ 1622 1623 void 1624 pmsg_common(rtm) 1625 struct rt_msghdr *rtm; 1626 { 1627 (void) printf("\nlocks: "); 1628 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1629 (void) printf(" inits: "); 1630 bprintf(stdout, rtm->rtm_inits, metricnames); 1631 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1632 } 1633 1634 static void 1635 pmsg_addrs(cp, addrs) 1636 char *cp; 1637 int addrs; 1638 { 1639 struct sockaddr *sa; 1640 int i; 1641 1642 if (addrs == 0) 1643 return; 1644 (void) printf("\nsockaddrs: "); 1645 bprintf(stdout, addrs, addrnames); 1646 (void) putchar('\n'); 1647 for (i = 1; i; i <<= 1) 1648 if (i & addrs) { 1649 sa = (struct sockaddr *)cp; 1650 (void) printf(" %s", routename(sa)); 1651 ADVANCE(cp, sa); 1652 } 1653 (void) putchar('\n'); 1654 (void) fflush(stdout); 1655 } 1656 1657 static void 1658 bprintf(fp, b, s) 1659 FILE *fp; 1660 int b; 1661 u_char *s; 1662 { 1663 int i; 1664 int gotsome = 0; 1665 1666 if (b == 0) 1667 return; 1668 while ((i = *s++) != 0) { 1669 if (b & (1 << (i-1))) { 1670 if (gotsome == 0) 1671 i = '<'; 1672 else 1673 i = ','; 1674 (void) putc(i, fp); 1675 gotsome = 1; 1676 for (; (i = *s) > 32; s++) 1677 (void) putc(i, fp); 1678 } else 1679 while (*s > 32) 1680 s++; 1681 } 1682 if (gotsome) 1683 (void) putc('>', fp); 1684 } 1685 1686 static int 1687 keyword(cp) 1688 char *cp; 1689 { 1690 struct keytab *kt = keywords; 1691 1692 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1693 kt++; 1694 return kt->kt_i; 1695 } 1696 1697 static void 1698 sodump(su, which) 1699 sup su; 1700 char *which; 1701 { 1702 #ifdef INET6 1703 char ntop_buf[NI_MAXHOST]; 1704 #endif 1705 1706 switch (su->sa.sa_family) { 1707 case AF_INET: 1708 (void) printf("%s: inet %s; ", 1709 which, inet_ntoa(su->sin.sin_addr)); 1710 break; 1711 case AF_APPLETALK: 1712 (void) printf("%s: atalk %d.%d; ", 1713 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1714 break; 1715 case AF_LINK: 1716 (void) printf("%s: link %s; ", 1717 which, link_ntoa(&su->sdl)); 1718 break; 1719 #ifndef SMALL 1720 #ifdef INET6 1721 case AF_INET6: 1722 (void) printf("%s: inet6 %s; ", 1723 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 1724 ntop_buf, sizeof(ntop_buf))); 1725 break; 1726 #endif 1727 case AF_ISO: 1728 (void) printf("%s: iso %s; ", 1729 which, iso_ntoa(&su->siso.siso_addr)); 1730 break; 1731 case AF_NS: 1732 (void) printf("%s: xns %s; ", 1733 which, ns_ntoa(su->sns.sns_addr)); 1734 break; 1735 #endif /* SMALL */ 1736 default: 1737 (void) printf("af %p: %s; ", 1738 which, any_ntoa(&su->sa)); 1739 } 1740 (void) fflush(stdout); 1741 } 1742 1743 /* States*/ 1744 #define VIRGIN 0 1745 #define GOTONE 1 1746 #define GOTTWO 2 1747 /* Inputs */ 1748 #define DIGIT (4*0) 1749 #define END (4*1) 1750 #define DELIM (4*2) 1751 1752 static void 1753 sockaddr(addr, sa) 1754 char *addr; 1755 struct sockaddr *sa; 1756 { 1757 char *cp = (char *)sa; 1758 int size = sa->sa_len; 1759 char *cplim = cp + size; 1760 int byte = 0, state = VIRGIN, new = 0; 1761 1762 (void) memset(cp, 0, size); 1763 cp++; 1764 do { 1765 if ((*addr >= '0') && (*addr <= '9')) { 1766 new = *addr - '0'; 1767 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1768 new = *addr - 'a' + 10; 1769 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1770 new = *addr - 'A' + 10; 1771 } else if (*addr == 0) 1772 state |= END; 1773 else 1774 state |= DELIM; 1775 addr++; 1776 switch (state /* | INPUT */) { 1777 case GOTTWO | DIGIT: 1778 *cp++ = byte; /*FALLTHROUGH*/ 1779 case VIRGIN | DIGIT: 1780 state = GOTONE; byte = new; continue; 1781 case GOTONE | DIGIT: 1782 state = GOTTWO; byte = new + (byte << 4); continue; 1783 default: /* | DELIM */ 1784 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1785 case GOTONE | END: 1786 case GOTTWO | END: 1787 *cp++ = byte; /* FALLTHROUGH */ 1788 case VIRGIN | END: 1789 break; 1790 } 1791 break; 1792 } while (cp < cplim); 1793 sa->sa_len = cp - (char *)sa; 1794 } 1795
Indexes created Mon Sep 29 03:10:08 GMT 2025