route.c revision 1.37
1 /* $NetBSD: route.c,v 1.37 2000/04/20 12:25:08 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 1.37 2000/04/20 12:25:08 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 struct ortentry route; 114 union sockunion { 115 struct sockaddr sa; 116 struct sockaddr_in sin; 117 #ifdef INET6 118 struct sockaddr_in6 sin6; 119 #endif 120 struct sockaddr_at sat; 121 struct sockaddr_dl sdl; 122 #ifndef SMALL 123 struct sockaddr_ns sns; 124 struct sockaddr_iso siso; 125 struct sockaddr_x25 sx25; 126 #endif /* SMALL */ 127 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 128 129 int pid, rtm_addrs; 130 int s; 131 int forcehost, forcenet, doflush, nflag, af, qflag, tflag; 132 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 133 int locking, lockrest, debugonly; 134 struct rt_metrics rt_metrics; 135 u_int32_t rtm_inits; 136 137 static void 138 usage(cp) 139 char *cp; 140 { 141 extern char *__progname; 142 if (cp) 143 warnx("botched keyword: %s", cp); 144 (void) fprintf(stderr, 145 "Usage: %s [ -fnqv ] cmd [[ -<qualifers> ] args ]\n", __progname); 146 exit(1); 147 /* NOTREACHED */ 148 } 149 150 #define ROUNDUP(a) \ 151 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 152 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 153 154 int 155 main(argc, argv) 156 int argc; 157 char **argv; 158 { 159 int ch; 160 161 if (argc < 2) 162 usage(NULL); 163 164 while ((ch = getopt(argc, argv, "fnqvdt")) != -1) 165 switch(ch) { 166 case 'f': 167 doflush = 1; 168 break; 169 case 'n': 170 nflag = 1; 171 break; 172 case 'q': 173 qflag = 1; 174 break; 175 case 'v': 176 verbose = 1; 177 break; 178 case 't': 179 tflag = 1; 180 break; 181 case 'd': 182 debugonly = 1; 183 break; 184 case '?': 185 default: 186 usage(NULL); 187 } 188 argc -= optind; 189 argv += optind; 190 191 pid = getpid(); 192 if (tflag) 193 s = open("/dev/null", O_WRONLY, 0); 194 else 195 s = socket(PF_ROUTE, SOCK_RAW, 0); 196 if (s < 0) 197 err(1, "socket"); 198 199 if (*argv == NULL) { 200 if (doflush) 201 ch = K_FLUSH; 202 else 203 goto no_cmd; 204 } else 205 ch = keyword(*argv); 206 207 switch (ch) { 208 209 #ifndef SMALL 210 case K_GET: 211 #endif /* SMALL */ 212 case K_CHANGE: 213 case K_ADD: 214 case K_DELETE: 215 if (doflush) 216 flushroutes(1, argv); 217 newroute(argc, argv); 218 break; 219 220 case K_SHOW: 221 show(argc, argv); 222 break; 223 224 #ifndef SMALL 225 case K_MONITOR: 226 monitor(); 227 break; 228 229 #endif /* SMALL */ 230 case K_FLUSH: 231 flushroutes(argc, argv); 232 break; 233 234 no_cmd: 235 default: 236 usage(*argv); 237 return 1; 238 } 239 return 0; 240 } 241 242 /* 243 * Purge all entries in the routing tables not 244 * associated with network interfaces. 245 */ 246 static void 247 flushroutes(argc, argv) 248 int argc; 249 char *argv[]; 250 { 251 size_t needed; 252 int mib[6], rlen, seqno; 253 char *buf, *next, *lim; 254 struct rt_msghdr *rtm; 255 256 af = 0; 257 shutdown(s, 0); /* Don't want to read back our messages */ 258 if (argc > 1) { 259 argv++; 260 if (argc == 2 && **argv == '-') 261 switch (keyword(*argv + 1)) { 262 case K_INET: 263 af = AF_INET; 264 break; 265 #ifdef INET6 266 case K_INET6: 267 af = AF_INET6; 268 break; 269 #endif 270 case K_ATALK: 271 af = AF_APPLETALK; 272 break; 273 #ifndef SMALL 274 case K_XNS: 275 af = AF_NS; 276 break; 277 #endif /* SMALL */ 278 case K_LINK: 279 af = AF_LINK; 280 break; 281 #ifndef SMALL 282 case K_ISO: 283 case K_OSI: 284 af = AF_ISO; 285 break; 286 case K_X25: 287 af = AF_CCITT; 288 #endif /* SMALL */ 289 default: 290 goto bad; 291 } else 292 bad: usage(*argv); 293 } 294 mib[0] = CTL_NET; 295 mib[1] = PF_ROUTE; 296 mib[2] = 0; /* protocol */ 297 mib[3] = 0; /* wildcard address family */ 298 mib[4] = NET_RT_DUMP; 299 mib[5] = 0; /* no flags */ 300 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 301 err(1, "route-sysctl-estimate"); 302 if (needed == 0) 303 return; 304 if ((buf = malloc(needed)) == NULL) 305 err(1, "malloc"); 306 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 307 err(1, "actual retrieval of routing table"); 308 lim = buf + needed; 309 if (verbose) { 310 (void) printf("Examining routing table from sysctl\n"); 311 if (af) printf("(address family %s)\n", (*argv + 1)); 312 } 313 seqno = 0; /* ??? */ 314 for (next = buf; next < lim; next += rtm->rtm_msglen) { 315 rtm = (struct rt_msghdr *)next; 316 if (verbose) 317 print_rtmsg(rtm, rtm->rtm_msglen); 318 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 319 continue; 320 if (af) { 321 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 322 323 if (sa->sa_family != af) 324 continue; 325 } 326 if (debugonly) 327 continue; 328 rtm->rtm_type = RTM_DELETE; 329 rtm->rtm_seq = seqno; 330 rlen = write(s, next, rtm->rtm_msglen); 331 if (rlen < (int)rtm->rtm_msglen) { 332 warn("write to routing socket, got %d for rlen", rlen); 333 break; 334 } 335 seqno++; 336 if (qflag) 337 continue; 338 if (verbose) 339 print_rtmsg(rtm, rlen); 340 else { 341 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 342 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 343 routename(sa) : netname(sa)); 344 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 345 (void) printf("%-20.20s ", routename(sa)); 346 (void) printf("done\n"); 347 } 348 } 349 } 350 351 352 static char hexlist[] = "0123456789abcdef"; 353 354 static char * 355 any_ntoa(sa) 356 const struct sockaddr *sa; 357 { 358 static char obuf[64]; 359 const char *in; 360 char *out; 361 int len; 362 363 len = sa->sa_len; 364 in = sa->sa_data; 365 out = obuf; 366 367 do { 368 *out++ = hexlist[(*in >> 4) & 15]; 369 *out++ = hexlist[(*in++) & 15]; 370 *out++ = '.'; 371 } while (--len > 0); 372 out[-1] = '\0'; 373 return obuf; 374 } 375 376 377 char * 378 routename(sa) 379 struct sockaddr *sa; 380 { 381 char *cp; 382 static char line[50]; 383 struct hostent *hp; 384 static char domain[MAXHOSTNAMELEN + 1]; 385 static int first = 1; 386 struct in_addr in; 387 388 if (first) { 389 first = 0; 390 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 391 (cp = strchr(domain, '.'))) { 392 (void)strncpy(domain, cp + 1, sizeof(domain) - 1); 393 domain[sizeof(domain) - 1] = '\0'; 394 } else 395 domain[0] = 0; 396 } 397 398 if (sa->sa_len == 0) { 399 strncpy(line, "default", sizeof(line) - 1); 400 line[sizeof(line) - 1] = '\0'; 401 } else switch (sa->sa_family) { 402 403 case AF_INET: 404 in = ((struct sockaddr_in *)sa)->sin_addr; 405 406 cp = 0; 407 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 408 cp = "default"; 409 if (cp == 0 && !nflag) { 410 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 411 AF_INET); 412 if (hp) { 413 if ((cp = strchr(hp->h_name, '.')) && 414 !strcmp(cp + 1, domain)) 415 *cp = 0; 416 cp = hp->h_name; 417 } 418 } 419 if (cp) 420 (void)strncpy(line, cp, sizeof(line) - 1); 421 else 422 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 423 line[sizeof(line) - 1] = '\0'; 424 break; 425 426 case AF_LINK: 427 return (link_ntoa((struct sockaddr_dl *)sa)); 428 429 #ifndef SMALL 430 #ifdef INET6 431 case AF_INET6: 432 { 433 struct sockaddr_in6 sin6; 434 int niflags; 435 436 #ifdef NI_WITHSCOPEID 437 niflags = NI_WITHSCOPEID; 438 #else 439 niflags = 0; 440 #endif 441 if (nflag) 442 niflags |= NI_NUMERICHOST; 443 memset(&sin6, 0, sizeof(sin6)); 444 memcpy(&sin6, sa, sa->sa_len); 445 sin6.sin6_len = sizeof(struct sockaddr_in6); 446 sin6.sin6_family = AF_INET6; 447 #ifdef __KAME__ 448 if (sa->sa_len == sizeof(struct sockaddr_in6) && 449 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 450 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 451 sin6.sin6_scope_id == 0) { 452 sin6.sin6_scope_id = 453 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 454 sin6.sin6_addr.s6_addr[2] = 0; 455 sin6.sin6_addr.s6_addr[3] = 0; 456 } 457 #endif 458 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 459 line, sizeof(line), NULL, 0, niflags) != 0) 460 strncpy(line, "invalid", sizeof(line)); 461 break; 462 } 463 #endif 464 465 case AF_NS: 466 return (ns_print((struct sockaddr_ns *)sa)); 467 468 case AF_ISO: 469 (void)snprintf(line, sizeof line, "iso %s", 470 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 471 break; 472 #endif /* SMALL */ 473 474 case AF_APPLETALK: 475 (void) snprintf(line, sizeof(line), "atalk %d.%d", 476 ((struct sockaddr_at *)sa)->sat_addr.s_net, 477 ((struct sockaddr_at *)sa)->sat_addr.s_node); 478 break; 479 480 default: 481 (void)snprintf(line, sizeof line, "(%d) %s", 482 sa->sa_family, any_ntoa(sa)); 483 break; 484 485 } 486 return (line); 487 } 488 489 /* 490 * Return the name of the network whose address is given. 491 * The address is assumed to be that of a net or subnet, not a host. 492 */ 493 char * 494 netname(sa) 495 struct sockaddr *sa; 496 { 497 char *cp = 0; 498 static char line[50]; 499 struct netent *np = 0; 500 u_int32_t net, mask; 501 u_int32_t i; 502 int subnetshift; 503 struct in_addr in; 504 505 switch (sa->sa_family) { 506 507 case AF_INET: 508 in = ((struct sockaddr_in *)sa)->sin_addr; 509 i = ntohl(in.s_addr); 510 if (i == 0) 511 cp = "default"; 512 else if (!nflag) { 513 if (IN_CLASSA(i)) { 514 mask = IN_CLASSA_NET; 515 subnetshift = 8; 516 } else if (IN_CLASSB(i)) { 517 mask = IN_CLASSB_NET; 518 subnetshift = 8; 519 } else { 520 mask = IN_CLASSC_NET; 521 subnetshift = 4; 522 } 523 /* 524 * If there are more bits than the standard mask 525 * would suggest, subnets must be in use. 526 * Guess at the subnet mask, assuming reasonable 527 * width subnet fields. 528 */ 529 while (i &~ mask) 530 mask = (int32_t)mask >> subnetshift; 531 net = i & mask; 532 while ((mask & 1) == 0) 533 mask >>= 1, net >>= 1; 534 np = getnetbyaddr(net, AF_INET); 535 if (np) 536 cp = np->n_name; 537 } 538 if (cp) { 539 (void)strncpy(line, cp, sizeof(line) - 1); 540 line[sizeof(line) - 1] = '\0'; 541 } else { 542 #if 0 /* XXX - This is silly... */ 543 #define C(x) ((x) & 0xff) 544 if ((i & 0xffffff) == 0) 545 (void)snprintf(line, sizeof line, "%u", 546 C(i >> 24)); 547 else if ((i & 0xffff) == 0) 548 (void)snprintf(line, sizeof line, "%u.%u", 549 C(i >> 24), C(i >> 16)); 550 else if ((i & 0xff) == 0) 551 (void)snprintf(line, sizeof line, "%u.%u.%u", 552 C(i >> 24), C(i >> 16), C(i >> 8)); 553 else 554 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 555 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 556 #undef C 557 #else /* XXX */ 558 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 559 #endif /* XXX */ 560 } 561 break; 562 563 case AF_LINK: 564 return (link_ntoa((struct sockaddr_dl *)sa)); 565 566 #ifndef SMALL 567 #ifdef INET6 568 case AF_INET6: 569 { 570 struct sockaddr_in6 sin6; 571 int niflags; 572 573 #ifdef NI_WITHSCOPEID 574 niflags = NI_WITHSCOPEID; 575 #else 576 niflags = 0; 577 #endif 578 if (nflag) 579 niflags |= NI_NUMERICHOST; 580 memset(&sin6, 0, sizeof(sin6)); 581 memcpy(&sin6, sa, sa->sa_len); 582 sin6.sin6_len = sizeof(struct sockaddr_in6); 583 sin6.sin6_family = AF_INET6; 584 #ifdef __KAME__ 585 if (sa->sa_len == sizeof(struct sockaddr_in6) && 586 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 587 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 588 sin6.sin6_scope_id == 0) { 589 sin6.sin6_scope_id = 590 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 591 sin6.sin6_addr.s6_addr[2] = 0; 592 sin6.sin6_addr.s6_addr[3] = 0; 593 } 594 #endif 595 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 596 line, sizeof(line), NULL, 0, niflags) != 0) 597 strncpy(line, "invalid", sizeof(line)); 598 break; 599 } 600 #endif 601 602 case AF_NS: 603 return (ns_print((struct sockaddr_ns *)sa)); 604 605 case AF_ISO: 606 (void)snprintf(line, sizeof line, "iso %s", 607 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 608 break; 609 #endif /* SMALL */ 610 611 case AF_APPLETALK: 612 (void) snprintf(line, sizeof(line), "atalk %d.%d", 613 ((struct sockaddr_at *)sa)->sat_addr.s_net, 614 ((struct sockaddr_at *)sa)->sat_addr.s_node); 615 break; 616 617 default: 618 (void)snprintf(line, sizeof line, "af %d: %s", 619 sa->sa_family, any_ntoa(sa)); 620 break; 621 } 622 return (line); 623 } 624 625 static void 626 set_metric(value, key) 627 char *value; 628 int key; 629 { 630 int flag = 0; 631 u_long noval, *valp = &noval; 632 633 switch (key) { 634 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 635 caseof(K_MTU, RTV_MTU, rmx_mtu); 636 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 637 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 638 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 639 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 640 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 641 caseof(K_RTT, RTV_RTT, rmx_rtt); 642 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 643 } 644 rtm_inits |= flag; 645 if (lockrest || locking) 646 rt_metrics.rmx_locks |= flag; 647 if (locking) 648 locking = 0; 649 *valp = atoi(value); 650 } 651 652 static void 653 newroute(argc, argv) 654 int argc; 655 char **argv; 656 { 657 char *cmd, *dest = "", *gateway = ""; 658 const char *err; 659 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 660 int key; 661 struct hostent *hp = 0; 662 663 cmd = argv[0]; 664 af = 0; 665 if (*cmd != 'g') 666 shutdown(s, 0); /* Don't want to read back our messages */ 667 while (--argc > 0) { 668 if (**(++argv)== '-') { 669 switch (key = keyword(1 + *argv)) { 670 671 case K_SA: 672 af = PF_ROUTE; 673 aflen = sizeof(union sockunion); 674 break; 675 676 case K_ATALK: 677 af = AF_APPLETALK; 678 aflen = sizeof(struct sockaddr_at); 679 break; 680 681 case K_INET: 682 af = AF_INET; 683 aflen = sizeof(struct sockaddr_in); 684 break; 685 686 #ifdef INET6 687 case K_INET6: 688 af = AF_INET6; 689 aflen = sizeof(struct sockaddr_in6); 690 break; 691 #endif 692 693 case K_LINK: 694 af = AF_LINK; 695 aflen = sizeof(struct sockaddr_dl); 696 break; 697 698 #ifndef SMALL 699 case K_OSI: 700 case K_ISO: 701 af = AF_ISO; 702 aflen = sizeof(struct sockaddr_iso); 703 break; 704 705 case K_X25: 706 af = AF_CCITT; 707 aflen = sizeof(struct sockaddr_x25); 708 break; 709 710 case K_XNS: 711 af = AF_NS; 712 aflen = sizeof(struct sockaddr_ns); 713 break; 714 #endif /* SMALL */ 715 716 case K_IFACE: 717 case K_INTERFACE: 718 iflag++; 719 break; 720 case K_NOSTATIC: 721 flags &= ~RTF_STATIC; 722 break; 723 case K_LLINFO: 724 flags |= RTF_LLINFO; 725 break; 726 case K_LOCK: 727 locking = 1; 728 break; 729 case K_LOCKREST: 730 lockrest = 1; 731 break; 732 case K_HOST: 733 forcehost++; 734 break; 735 case K_REJECT: 736 flags |= RTF_REJECT; 737 break; 738 case K_BLACKHOLE: 739 flags |= RTF_BLACKHOLE; 740 break; 741 case K_PROTO1: 742 flags |= RTF_PROTO1; 743 break; 744 case K_PROTO2: 745 flags |= RTF_PROTO2; 746 break; 747 case K_CLONING: 748 flags |= RTF_CLONING; 749 break; 750 case K_XRESOLVE: 751 flags |= RTF_XRESOLVE; 752 break; 753 case K_STATIC: 754 flags |= RTF_STATIC; 755 break; 756 case K_IFA: 757 if (!--argc) 758 usage(1+*argv); 759 (void) getaddr(RTA_IFA, *++argv, 0); 760 break; 761 case K_IFP: 762 if (!--argc) 763 usage(1+*argv); 764 (void) getaddr(RTA_IFP, *++argv, 0); 765 break; 766 case K_GENMASK: 767 if (!--argc) 768 usage(1+*argv); 769 (void) getaddr(RTA_GENMASK, *++argv, 0); 770 break; 771 case K_GATEWAY: 772 if (!--argc) 773 usage(1+*argv); 774 (void) getaddr(RTA_GATEWAY, *++argv, 0); 775 break; 776 case K_DST: 777 if (!--argc) 778 usage(1+*argv); 779 ishost = getaddr(RTA_DST, *++argv, &hp); 780 dest = *argv; 781 break; 782 case K_NETMASK: 783 if (!--argc) 784 usage(1+*argv); 785 (void) getaddr(RTA_NETMASK, *++argv, 0); 786 /* FALLTHROUGH */ 787 case K_NET: 788 forcenet++; 789 break; 790 #ifdef INET6 791 case K_PREFIXLEN: 792 argc--; 793 if (prefixlen(*++argv) == 128) { 794 forcenet = 0; 795 ishost = 1; 796 } else { 797 forcenet = 1; 798 ishost = 0; 799 } 800 break; 801 #endif 802 case K_MTU: 803 case K_HOPCOUNT: 804 case K_EXPIRE: 805 case K_RECVPIPE: 806 case K_SENDPIPE: 807 case K_SSTHRESH: 808 case K_RTT: 809 case K_RTTVAR: 810 if (!--argc) 811 usage(1+*argv); 812 set_metric(*++argv, key); 813 break; 814 default: 815 usage(1+*argv); 816 } 817 } else { 818 if ((rtm_addrs & RTA_DST) == 0) { 819 dest = *argv; 820 ishost = getaddr(RTA_DST, *argv, &hp); 821 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 822 gateway = *argv; 823 (void) getaddr(RTA_GATEWAY, *argv, &hp); 824 } else { 825 int ret = atoi(*argv); 826 827 if (ret == 0) { 828 if (!qflag && strcmp(*argv, "0") == 0) 829 warnx("%s, %s", 830 "old usage of trailing 0", 831 "assuming route to if"); 832 else 833 usage((char *)NULL); 834 iflag = 1; 835 continue; 836 } else if (ret > 0 && ret < 10) { 837 if (!qflag) { 838 warnx("%s, %s", 839 "old usage of trailing digit", 840 "assuming route via gateway"); 841 } 842 iflag = 0; 843 continue; 844 } 845 (void) getaddr(RTA_NETMASK, *argv, 0); 846 } 847 } 848 } 849 if (forcehost) 850 ishost = 1; 851 if (forcenet) 852 ishost = 0; 853 flags |= RTF_UP; 854 if (ishost) 855 flags |= RTF_HOST; 856 if (iflag == 0) 857 flags |= RTF_GATEWAY; 858 for (attempts = 1; ; attempts++) { 859 errno = 0; 860 if ((ret = rtmsg(*cmd, flags)) == 0) 861 break; 862 if (errno != ENETUNREACH && errno != ESRCH) 863 break; 864 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 865 hp->h_addr_list++; 866 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 867 hp->h_length); 868 } else 869 break; 870 } 871 if (*cmd == 'g') 872 exit(0); 873 oerrno = errno; 874 if (!qflag) { 875 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 876 if (*gateway) { 877 (void) printf(": gateway %s", gateway); 878 if (attempts > 1 && ret == 0 && af == AF_INET) 879 (void) printf(" (%s)", 880 inet_ntoa(((struct sockaddr_in *) 881 &route.rt_gateway)->sin_addr)); 882 } 883 if (ret == 0) 884 (void) printf("\n"); 885 } 886 if (ret != 0) { 887 switch (oerrno) { 888 case ESRCH: 889 err = "not in table"; 890 break; 891 case EBUSY: 892 err = "entry in use"; 893 break; 894 case ENOBUFS: 895 err = "routing table overflow"; 896 break; 897 default: 898 err = strerror(oerrno); 899 break; 900 } 901 (void) printf(": %s\n", err); 902 } 903 } 904 905 static void 906 inet_makenetandmask(net, sin) 907 u_int32_t net; 908 struct sockaddr_in *sin; 909 { 910 u_int32_t addr, mask = 0; 911 char *cp; 912 913 rtm_addrs |= RTA_NETMASK; 914 if (net == 0) 915 mask = addr = 0; 916 else if (net < 128) { 917 addr = net << IN_CLASSA_NSHIFT; 918 mask = IN_CLASSA_NET; 919 } else if (net < 65536) { 920 addr = net << IN_CLASSB_NSHIFT; 921 mask = IN_CLASSB_NET; 922 } else if (net < 16777216L) { 923 addr = net << IN_CLASSC_NSHIFT; 924 mask = IN_CLASSC_NET; 925 } else { 926 addr = net; 927 if ((addr & IN_CLASSA_HOST) == 0) 928 mask = IN_CLASSA_NET; 929 else if ((addr & IN_CLASSB_HOST) == 0) 930 mask = IN_CLASSB_NET; 931 else if ((addr & IN_CLASSC_HOST) == 0) 932 mask = IN_CLASSC_NET; 933 else 934 mask = -1; 935 } 936 sin->sin_addr.s_addr = htonl(addr); 937 sin = &so_mask.sin; 938 sin->sin_addr.s_addr = htonl(mask); 939 sin->sin_len = 0; 940 sin->sin_family = 0; 941 cp = (char *)(&sin->sin_addr + 1); 942 while (*--cp == 0 && cp > (char *)sin) 943 ; 944 sin->sin_len = 1 + cp - (char *)sin; 945 } 946 947 #ifdef INET6 948 /* 949 * XXX the function may need more improvement... 950 */ 951 static void 952 inet6_makenetandmask(sin6) 953 struct sockaddr_in6 *sin6; 954 { 955 char *plen; 956 struct in6_addr in6; 957 958 plen = NULL; 959 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 960 sin6->sin6_scope_id == 0) { 961 plen = "0"; 962 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 963 /* aggregatable global unicast - RFC2374 */ 964 memset(&in6, 0, sizeof(in6)); 965 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 966 plen = "64"; 967 else 968 plen = "128"; 969 } 970 971 if (plen) { 972 rtm_addrs |= RTA_NETMASK; 973 prefixlen(plen); 974 } 975 } 976 #endif 977 978 /* 979 * Interpret an argument as a network address of some kind, 980 * returning 1 if a host address, 0 if a network address. 981 */ 982 static int 983 getaddr(which, s, hpp) 984 int which; 985 char *s; 986 struct hostent **hpp; 987 { 988 sup su; 989 struct hostent *hp; 990 struct netent *np; 991 u_int32_t val; 992 char *t; 993 int afamily; /* local copy of af so we can change it */ 994 995 if (af == 0) { 996 af = AF_INET; 997 aflen = sizeof(struct sockaddr_in); 998 } 999 afamily = af; 1000 rtm_addrs |= which; 1001 switch (which) { 1002 case RTA_DST: 1003 su = &so_dst; 1004 break; 1005 case RTA_GATEWAY: 1006 su = &so_gate; 1007 break; 1008 case RTA_NETMASK: 1009 su = &so_mask; 1010 break; 1011 case RTA_GENMASK: 1012 su = &so_genmask; 1013 break; 1014 case RTA_IFP: 1015 su = &so_ifp; 1016 afamily = AF_LINK; 1017 break; 1018 case RTA_IFA: 1019 su = &so_ifa; 1020 su->sa.sa_family = af; 1021 break; 1022 default: 1023 su = NULL; 1024 usage("Internal Error"); 1025 /*NOTREACHED*/ 1026 } 1027 su->sa.sa_len = aflen; 1028 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1029 if (strcmp(s, "default") == 0) { 1030 switch (which) { 1031 case RTA_DST: 1032 forcenet++; 1033 (void) getaddr(RTA_NETMASK, s, 0); 1034 break; 1035 case RTA_NETMASK: 1036 case RTA_GENMASK: 1037 su->sa.sa_len = 0; 1038 } 1039 return (0); 1040 } 1041 switch (afamily) { 1042 #ifndef SMALL 1043 #ifdef INET6 1044 case AF_INET6: 1045 { 1046 struct addrinfo hints, *res; 1047 1048 memset(&hints, 0, sizeof(hints)); 1049 hints.ai_family = afamily; /*AF_INET6*/ 1050 hints.ai_flags = AI_NUMERICHOST; 1051 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1052 if (getaddrinfo(s, "0", &hints, &res) != 0 || 1053 res->ai_family != AF_INET6 || 1054 res->ai_addrlen != sizeof(su->sin6)) { 1055 (void) fprintf(stderr, "%s: bad value\n", s); 1056 exit(1); 1057 } 1058 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1059 #ifdef __KAME__ 1060 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1061 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1062 su->sin6.sin6_scope_id) { 1063 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1064 htons(su->sin6.sin6_scope_id); 1065 su->sin6.sin6_scope_id = 0; 1066 } 1067 #endif 1068 if (which == RTA_DST) 1069 inet6_makenetandmask(&su->sin6); 1070 freeaddrinfo(res); 1071 return 0; 1072 } 1073 #endif 1074 1075 case AF_NS: 1076 if (which == RTA_DST) { 1077 extern short ns_bh[3]; 1078 struct sockaddr_ns *sms = &(so_mask.sns); 1079 memset(sms, 0, sizeof(*sms)); 1080 sms->sns_family = 0; 1081 sms->sns_len = 6; 1082 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1083 rtm_addrs |= RTA_NETMASK; 1084 } 1085 su->sns.sns_addr = ns_addr(s); 1086 return (!ns_nullhost(su->sns.sns_addr)); 1087 1088 case AF_OSI: 1089 su->siso.siso_addr = *iso_addr(s); 1090 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1091 char *cp = (char *)TSEL(&su->siso); 1092 su->siso.siso_nlen = 0; 1093 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1094 su->siso.siso_len = 1 + cp - (char *)su; 1095 } 1096 return (1); 1097 1098 case AF_CCITT: 1099 ccitt_addr(s, &su->sx25); 1100 return (which == RTA_DST ? x25_makemask() : 1); 1101 #endif /* SMALL */ 1102 1103 case PF_ROUTE: 1104 su->sa.sa_len = sizeof(*su); 1105 sockaddr(s, &su->sa); 1106 return (1); 1107 1108 case AF_APPLETALK: 1109 t = strchr (s, '.'); 1110 if (!t) { 1111 badataddr: 1112 errx(1, "bad address: %s", s); 1113 } 1114 val = atoi (s); 1115 if (val > 65535) 1116 goto badataddr; 1117 su->sat.sat_addr.s_net = val; 1118 val = atoi (t); 1119 if (val > 256) 1120 goto badataddr; 1121 su->sat.sat_addr.s_node = val; 1122 rtm_addrs |= RTA_NETMASK; 1123 return(forcehost || su->sat.sat_addr.s_node != 0); 1124 1125 case AF_LINK: 1126 link_addr(s, &su->sdl); 1127 return (1); 1128 1129 case AF_INET: 1130 default: 1131 break; 1132 } 1133 1134 if (hpp == NULL) 1135 hpp = &hp; 1136 *hpp = NULL; 1137 if (((val = inet_addr(s)) != INADDR_NONE) && 1138 (which != RTA_DST || forcenet == 0)) { 1139 su->sin.sin_addr.s_addr = val; 1140 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1141 return (1); 1142 else { 1143 val = ntohl(val); 1144 goto netdone; 1145 } 1146 } 1147 if ((val = inet_network(s)) != INADDR_NONE || 1148 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1149 netdone: 1150 if (which == RTA_DST) 1151 inet_makenetandmask(val, &su->sin); 1152 return (0); 1153 } 1154 hp = gethostbyname(s); 1155 if (hp) { 1156 *hpp = hp; 1157 su->sin.sin_family = hp->h_addrtype; 1158 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1159 return (1); 1160 } 1161 errx(1, "bad value: %s", s); 1162 } 1163 1164 #ifndef SMALL 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 int 1193 x25_makemask() 1194 { 1195 char *cp; 1196 1197 if ((rtm_addrs & RTA_NETMASK) == 0) { 1198 rtm_addrs |= RTA_NETMASK; 1199 for (cp = (char *)&so_mask.sx25.x25_net; 1200 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1201 *cp = -1; 1202 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1203 } 1204 return 0; 1205 } 1206 1207 short ns_nullh[] = {0,0,0}; 1208 short ns_bh[] = {-1,-1,-1}; 1209 1210 char * 1211 ns_print(sns) 1212 struct sockaddr_ns *sns; 1213 { 1214 struct ns_addr work; 1215 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1216 u_short port; 1217 static char mybuf[50], cport[10], chost[25]; 1218 char *host = ""; 1219 char *p; 1220 u_char *q; 1221 1222 work = sns->sns_addr; 1223 port = ntohs(work.x_port); 1224 work.x_port = 0; 1225 net.net_e = work.x_net; 1226 if (ns_nullhost(work) && net.int32_t_e == 0) { 1227 if (!port) 1228 return ("*.*"); 1229 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1230 return (mybuf); 1231 } 1232 1233 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1234 host = "any"; 1235 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1236 host = "*"; 1237 else { 1238 q = work.x_host.c_host; 1239 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1240 q[0], q[1], q[2], q[3], q[4], q[5]); 1241 for (p = chost; *p == '0' && p < chost + 12; p++) 1242 /* void */; 1243 host = p; 1244 } 1245 if (port) 1246 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1247 else 1248 *cport = 0; 1249 1250 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1251 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1252 return (mybuf); 1253 } 1254 1255 static void 1256 interfaces() 1257 { 1258 size_t needed; 1259 int mib[6]; 1260 char *buf, *lim, *next; 1261 struct rt_msghdr *rtm; 1262 1263 mib[0] = CTL_NET; 1264 mib[1] = PF_ROUTE; 1265 mib[2] = 0; /* protocol */ 1266 mib[3] = 0; /* wildcard address family */ 1267 mib[4] = NET_RT_IFLIST; 1268 mib[5] = 0; /* no flags */ 1269 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1270 err(1, "route-sysctl-estimate"); 1271 if ((buf = malloc(needed)) == NULL) 1272 err(1, "malloc"); 1273 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1274 err(1, "actual retrieval of interface table"); 1275 lim = buf + needed; 1276 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1277 rtm = (struct rt_msghdr *)next; 1278 print_rtmsg(rtm, rtm->rtm_msglen); 1279 } 1280 } 1281 1282 static void 1283 monitor() 1284 { 1285 int n; 1286 char msg[2048]; 1287 1288 verbose = 1; 1289 if (debugonly) { 1290 interfaces(); 1291 exit(0); 1292 } 1293 for(;;) { 1294 time_t now; 1295 n = read(s, msg, 2048); 1296 now = time(NULL); 1297 (void) printf("got message of size %d on %s", n, ctime(&now)); 1298 print_rtmsg((struct rt_msghdr *)msg, n); 1299 } 1300 } 1301 1302 #endif /* SMALL */ 1303 1304 1305 struct { 1306 struct rt_msghdr m_rtm; 1307 char m_space[512]; 1308 } m_rtmsg; 1309 1310 static int 1311 rtmsg(cmd, flags) 1312 int cmd, flags; 1313 { 1314 static int seq; 1315 int rlen; 1316 char *cp = m_rtmsg.m_space; 1317 int l; 1318 1319 #define NEXTADDR(w, u) \ 1320 if (rtm_addrs & (w)) {\ 1321 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1322 if (verbose) sodump(&(u),"u");\ 1323 } 1324 1325 errno = 0; 1326 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1327 if (cmd == 'a') 1328 cmd = RTM_ADD; 1329 else if (cmd == 'c') 1330 cmd = RTM_CHANGE; 1331 else if (cmd == 'g') { 1332 #ifdef SMALL 1333 return (-1); 1334 #else /* SMALL */ 1335 cmd = RTM_GET; 1336 if (so_ifp.sa.sa_family == 0) { 1337 so_ifp.sa.sa_family = AF_LINK; 1338 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1339 rtm_addrs |= RTA_IFP; 1340 } 1341 #endif /* SMALL */ 1342 } else 1343 cmd = RTM_DELETE; 1344 #define rtm m_rtmsg.m_rtm 1345 rtm.rtm_type = cmd; 1346 rtm.rtm_flags = flags; 1347 rtm.rtm_version = RTM_VERSION; 1348 rtm.rtm_seq = ++seq; 1349 rtm.rtm_addrs = rtm_addrs; 1350 rtm.rtm_rmx = rt_metrics; 1351 rtm.rtm_inits = rtm_inits; 1352 1353 if (rtm_addrs & RTA_NETMASK) 1354 mask_addr(); 1355 NEXTADDR(RTA_DST, so_dst); 1356 NEXTADDR(RTA_GATEWAY, so_gate); 1357 NEXTADDR(RTA_NETMASK, so_mask); 1358 NEXTADDR(RTA_GENMASK, so_genmask); 1359 NEXTADDR(RTA_IFP, so_ifp); 1360 NEXTADDR(RTA_IFA, so_ifa); 1361 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1362 if (verbose) 1363 print_rtmsg(&rtm, l); 1364 if (debugonly) 1365 return (0); 1366 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1367 perror("writing to routing socket"); 1368 return (-1); 1369 } 1370 #ifndef SMALL 1371 if (cmd == RTM_GET) { 1372 do { 1373 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1374 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1375 if (l < 0) 1376 err(1, "read from routing socket"); 1377 else 1378 print_getmsg(&rtm, l); 1379 } 1380 #endif /* SMALL */ 1381 #undef rtm 1382 return (0); 1383 } 1384 1385 static void 1386 mask_addr() 1387 { 1388 int olen = so_mask.sa.sa_len; 1389 char *cp1 = olen + (char *)&so_mask, *cp2; 1390 1391 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1392 if (*--cp1 != 0) { 1393 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1394 break; 1395 } 1396 if ((rtm_addrs & RTA_DST) == 0) 1397 return; 1398 switch (so_dst.sa.sa_family) { 1399 case AF_INET: 1400 #ifdef INET6 1401 case AF_INET6: 1402 #endif 1403 case AF_APPLETALK: 1404 #ifndef SMALL 1405 case AF_NS: 1406 case AF_CCITT: 1407 #endif /* SMALL */ 1408 case 0: 1409 return; 1410 #ifndef SMALL 1411 case AF_ISO: 1412 olen = MIN(so_dst.siso.siso_nlen, 1413 MAX(so_mask.sa.sa_len - 6, 0)); 1414 break; 1415 #endif /* SMALL */ 1416 } 1417 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1418 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1419 while (cp2 > cp1) 1420 *--cp2 = 0; 1421 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1422 while (cp1 > so_dst.sa.sa_data) 1423 *--cp1 &= *--cp2; 1424 #ifndef SMALL 1425 switch (so_dst.sa.sa_family) { 1426 case AF_ISO: 1427 so_dst.siso.siso_nlen = olen; 1428 break; 1429 } 1430 #endif /* SMALL */ 1431 } 1432 1433 char *msgtypes[] = { 1434 "", 1435 "RTM_ADD: Add Route", 1436 "RTM_DELETE: Delete Route", 1437 "RTM_CHANGE: Change Metrics or flags", 1438 "RTM_GET: Report Metrics", 1439 "RTM_LOSING: Kernel Suspects Partitioning", 1440 "RTM_REDIRECT: Told to use different route", 1441 "RTM_MISS: Lookup failed on this address", 1442 "RTM_LOCK: fix specified metrics", 1443 "RTM_OLDADD: caused by SIOCADDRT", 1444 "RTM_OLDDEL: caused by SIOCDELRT", 1445 "RTM_RESOLVE: Route created by cloning", 1446 "RTM_NEWADDR: address being added to iface", 1447 "RTM_DELADDR: address being removed from iface", 1448 "RTM_IFINFO: iface status change", 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 1469 if (verbose == 0) 1470 return; 1471 if (rtm->rtm_version != RTM_VERSION) { 1472 (void) printf("routing message version %d not understood\n", 1473 rtm->rtm_version); 1474 return; 1475 } 1476 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1477 switch (rtm->rtm_type) { 1478 case RTM_IFINFO: 1479 ifm = (struct if_msghdr *)rtm; 1480 (void) printf("if# %d, flags:", ifm->ifm_index); 1481 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1482 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1483 break; 1484 case RTM_NEWADDR: 1485 case RTM_DELADDR: 1486 ifam = (struct ifa_msghdr *)rtm; 1487 (void) printf("metric %d, flags:", ifam->ifam_metric); 1488 bprintf(stdout, ifam->ifam_flags, routeflags); 1489 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1490 break; 1491 default: 1492 (void) printf("pid: %d, seq %d, errno %d, flags:", 1493 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1494 bprintf(stdout, rtm->rtm_flags, routeflags); 1495 pmsg_common(rtm); 1496 } 1497 } 1498 1499 #ifndef SMALL 1500 static void 1501 print_getmsg(rtm, msglen) 1502 struct rt_msghdr *rtm; 1503 int msglen; 1504 { 1505 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1506 struct sockaddr_dl *ifp = NULL; 1507 struct sockaddr *sa; 1508 char *cp; 1509 int i; 1510 1511 (void) printf(" route to: %s\n", 1512 routename((struct sockaddr *) &so_dst)); 1513 if (rtm->rtm_version != RTM_VERSION) { 1514 warnx("routing message version %d not understood", 1515 rtm->rtm_version); 1516 return; 1517 } 1518 if (rtm->rtm_msglen > msglen) { 1519 warnx("message length mismatch, in packet %d, returned %d\n", 1520 rtm->rtm_msglen, msglen); 1521 } 1522 if (rtm->rtm_errno) { 1523 warn("RTM_GET"); 1524 return; 1525 } 1526 cp = ((char *)(rtm + 1)); 1527 if (rtm->rtm_addrs) 1528 for (i = 1; i; i <<= 1) 1529 if (i & rtm->rtm_addrs) { 1530 sa = (struct sockaddr *)cp; 1531 switch (i) { 1532 case RTA_DST: 1533 dst = sa; 1534 break; 1535 case RTA_GATEWAY: 1536 gate = sa; 1537 break; 1538 case RTA_NETMASK: 1539 mask = sa; 1540 break; 1541 case RTA_IFP: 1542 if (sa->sa_family == AF_LINK && 1543 ((struct sockaddr_dl *)sa)->sdl_nlen) 1544 ifp = (struct sockaddr_dl *)sa; 1545 break; 1546 case RTA_IFA: 1547 ifa = sa; 1548 break; 1549 } 1550 ADVANCE(cp, sa); 1551 } 1552 if (dst && mask) 1553 mask->sa_family = dst->sa_family; /* XXX */ 1554 if (dst) 1555 (void)printf("destination: %s\n", routename(dst)); 1556 if (mask) { 1557 int savenflag = nflag; 1558 1559 nflag = 1; 1560 (void)printf(" mask: %s\n", routename(mask)); 1561 nflag = savenflag; 1562 } 1563 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1564 (void)printf(" gateway: %s\n", routename(gate)); 1565 if (ifa) 1566 (void)printf(" local addr: %s\n", routename(ifa)); 1567 if (ifp) 1568 (void)printf(" interface: %.*s\n", 1569 ifp->sdl_nlen, ifp->sdl_data); 1570 (void)printf(" flags: "); 1571 bprintf(stdout, rtm->rtm_flags, routeflags); 1572 1573 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1574 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1575 1576 (void) printf("\n%s\n", "\ 1577 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1578 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1579 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1580 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1581 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1582 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1583 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1584 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1585 if (rtm->rtm_rmx.rmx_expire) 1586 rtm->rtm_rmx.rmx_expire -= time(0); 1587 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1588 #undef lock 1589 #undef msec 1590 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1591 if (verbose) 1592 pmsg_common(rtm); 1593 else if (rtm->rtm_addrs &~ RTA_IGN) { 1594 (void) printf("sockaddrs: "); 1595 bprintf(stdout, rtm->rtm_addrs, addrnames); 1596 putchar('\n'); 1597 } 1598 #undef RTA_IGN 1599 } 1600 #endif /* SMALL */ 1601 1602 void 1603 pmsg_common(rtm) 1604 struct rt_msghdr *rtm; 1605 { 1606 (void) printf("\nlocks: "); 1607 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1608 (void) printf(" inits: "); 1609 bprintf(stdout, rtm->rtm_inits, metricnames); 1610 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1611 } 1612 1613 static void 1614 pmsg_addrs(cp, addrs) 1615 char *cp; 1616 int addrs; 1617 { 1618 struct sockaddr *sa; 1619 int i; 1620 1621 if (addrs == 0) 1622 return; 1623 (void) printf("\nsockaddrs: "); 1624 bprintf(stdout, addrs, addrnames); 1625 (void) putchar('\n'); 1626 for (i = 1; i; i <<= 1) 1627 if (i & addrs) { 1628 sa = (struct sockaddr *)cp; 1629 (void) printf(" %s", routename(sa)); 1630 ADVANCE(cp, sa); 1631 } 1632 (void) putchar('\n'); 1633 (void) fflush(stdout); 1634 } 1635 1636 static void 1637 bprintf(fp, b, s) 1638 FILE *fp; 1639 int b; 1640 u_char *s; 1641 { 1642 int i; 1643 int gotsome = 0; 1644 1645 if (b == 0) 1646 return; 1647 while ((i = *s++) != 0) { 1648 if (b & (1 << (i-1))) { 1649 if (gotsome == 0) 1650 i = '<'; 1651 else 1652 i = ','; 1653 (void) putc(i, fp); 1654 gotsome = 1; 1655 for (; (i = *s) > 32; s++) 1656 (void) putc(i, fp); 1657 } else 1658 while (*s > 32) 1659 s++; 1660 } 1661 if (gotsome) 1662 (void) putc('>', fp); 1663 } 1664 1665 static int 1666 keyword(cp) 1667 char *cp; 1668 { 1669 struct keytab *kt = keywords; 1670 1671 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1672 kt++; 1673 return kt->kt_i; 1674 } 1675 1676 static void 1677 sodump(su, which) 1678 sup su; 1679 char *which; 1680 { 1681 #ifdef INET6 1682 char ntop_buf[NI_MAXHOST]; 1683 #endif 1684 1685 switch (su->sa.sa_family) { 1686 case AF_INET: 1687 (void) printf("%s: inet %s; ", 1688 which, inet_ntoa(su->sin.sin_addr)); 1689 break; 1690 case AF_APPLETALK: 1691 (void) printf("%s: atalk %d.%d; ", 1692 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1693 break; 1694 case AF_LINK: 1695 (void) printf("%s: link %s; ", 1696 which, link_ntoa(&su->sdl)); 1697 break; 1698 #ifndef SMALL 1699 #ifdef INET6 1700 case AF_INET6: 1701 (void) printf("%s: inet6 %s; ", 1702 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 1703 ntop_buf, sizeof(ntop_buf))); 1704 break; 1705 #endif 1706 case AF_ISO: 1707 (void) printf("%s: iso %s; ", 1708 which, iso_ntoa(&su->siso.siso_addr)); 1709 break; 1710 case AF_NS: 1711 (void) printf("%s: xns %s; ", 1712 which, ns_ntoa(su->sns.sns_addr)); 1713 break; 1714 #endif /* SMALL */ 1715 default: 1716 (void) printf("af %p: %s; ", 1717 which, any_ntoa(&su->sa)); 1718 } 1719 (void) fflush(stdout); 1720 } 1721 1722 /* States*/ 1723 #define VIRGIN 0 1724 #define GOTONE 1 1725 #define GOTTWO 2 1726 /* Inputs */ 1727 #define DIGIT (4*0) 1728 #define END (4*1) 1729 #define DELIM (4*2) 1730 1731 static void 1732 sockaddr(addr, sa) 1733 char *addr; 1734 struct sockaddr *sa; 1735 { 1736 char *cp = (char *)sa; 1737 int size = sa->sa_len; 1738 char *cplim = cp + size; 1739 int byte = 0, state = VIRGIN, new = 0; 1740 1741 (void) memset(cp, 0, size); 1742 cp++; 1743 do { 1744 if ((*addr >= '0') && (*addr <= '9')) { 1745 new = *addr - '0'; 1746 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1747 new = *addr - 'a' + 10; 1748 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1749 new = *addr - 'A' + 10; 1750 } else if (*addr == 0) 1751 state |= END; 1752 else 1753 state |= DELIM; 1754 addr++; 1755 switch (state /* | INPUT */) { 1756 case GOTTWO | DIGIT: 1757 *cp++ = byte; /*FALLTHROUGH*/ 1758 case VIRGIN | DIGIT: 1759 state = GOTONE; byte = new; continue; 1760 case GOTONE | DIGIT: 1761 state = GOTTWO; byte = new + (byte << 4); continue; 1762 default: /* | DELIM */ 1763 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1764 case GOTONE | END: 1765 case GOTTWO | END: 1766 *cp++ = byte; /* FALLTHROUGH */ 1767 case VIRGIN | END: 1768 break; 1769 } 1770 break; 1771 } while (cp < cplim); 1772 sa->sa_len = cp - (char *)sa; 1773 } 1774
Indexes created Sat Sep 27 21:09:56 GMT 2025