route.c revision 81980
1/* 2 * Copyright (c) 1983, 1989, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#ifndef lint 35static const char copyright[] = 36"@(#) Copyright (c) 1983, 1989, 1991, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#ifndef lint 41#if 0 42static char sccsid[] = "@(#)route.c 8.3 (Berkeley) 3/19/94"; 43#endif 44static const char rcsid[] = 45 "$FreeBSD: head/sbin/route/route.c 81980 2001-08-20 14:53:05Z brian $"; 46#endif /* not lint */ 47 48#include <sys/param.h> 49#include <sys/file.h> 50#include <sys/socket.h> 51#include <sys/ioctl.h> 52#include <sys/sysctl.h> 53#include <sys/types.h> 54 55#include <net/if.h> 56#include <net/route.h> 57#include <net/if_dl.h> 58#include <netinet/in.h> 59#include <netinet/if_ether.h> 60#include <netatalk/at.h> 61#ifdef NS 62#include <netns/ns.h> 63#endif 64#include <arpa/inet.h> 65#include <netdb.h> 66 67#include <ctype.h> 68#include <err.h> 69#include <errno.h> 70#include <paths.h> 71#include <stdio.h> 72#include <stdlib.h> 73#include <string.h> 74#include <sysexits.h> 75#include <unistd.h> 76#include <ifaddrs.h> 77 78struct keytab { 79 char *kt_cp; 80 int kt_i; 81} keywords[] = { 82#include "keywords.h" 83 {0, 0} 84}; 85 86struct ortentry route; 87union sockunion { 88 struct sockaddr sa; 89 struct sockaddr_in sin; 90#ifdef INET6 91 struct sockaddr_in6 sin6; 92#endif 93 struct sockaddr_at sat; 94#ifdef NS 95 struct sockaddr_ns sns; 96#endif 97 struct sockaddr_dl sdl; 98 struct sockaddr_inarp sinarp; 99 struct sockaddr_storage ss; /* added to avoid memory overrun */ 100} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 101 102typedef union sockunion *sup; 103int pid, rtm_addrs, uid; 104int s; 105int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 106int iflag, verbose, aflen = sizeof (struct sockaddr_in); 107int locking, lockrest, debugonly; 108struct rt_metrics rt_metrics; 109u_long rtm_inits; 110int atalk_aton __P((const char *, struct at_addr *)); 111char *atalk_ntoa __P((struct at_addr)); 112const char *routename(), *netname(); 113void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 114void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 115int getaddr(), rtmsg(), x25_makemask(); 116int prefixlen(); 117extern char *iso_ntoa(); 118 119void usage __P((const char *)) __dead2; 120 121void 122usage(cp) 123 const char *cp; 124{ 125 if (cp) 126 warnx("bad keyword: %s", cp); 127 (void) fprintf(stderr, 128 "usage: route [-dnqtv] command [[modifiers] args]\n"); 129 exit(EX_USAGE); 130 /* NOTREACHED */ 131} 132 133#define ROUNDUP(a) \ 134 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 135#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 136 137int 138main(argc, argv) 139 int argc; 140 char **argv; 141{ 142 int ch; 143 144 if (argc < 2) 145 usage((char *)NULL); 146 147 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 148 switch(ch) { 149 case 'n': 150 nflag = 1; 151 break; 152 case 'q': 153 qflag = 1; 154 break; 155 case 'v': 156 verbose = 1; 157 break; 158 case 't': 159 tflag = 1; 160 break; 161 case 'd': 162 debugonly = 1; 163 break; 164 case '?': 165 default: 166 usage((char *)NULL); 167 } 168 argc -= optind; 169 argv += optind; 170 171 pid = getpid(); 172 uid = getuid(); 173 if (tflag) 174 s = open(_PATH_DEVNULL, O_WRONLY, 0); 175 else 176 s = socket(PF_ROUTE, SOCK_RAW, 0); 177 if (s < 0) 178 err(EX_OSERR, "socket"); 179 setuid(uid); 180 if (*argv) 181 switch (keyword(*argv)) { 182 case K_GET: 183 uid = 0; 184 /* FALLTHROUGH */ 185 186 case K_CHANGE: 187 case K_ADD: 188 case K_DELETE: 189 newroute(argc, argv); 190 /* NOTREACHED */ 191 192 case K_MONITOR: 193 monitor(); 194 /* NOTREACHED */ 195 196 case K_FLUSH: 197 flushroutes(argc, argv); 198 exit(0); 199 /* NOTREACHED */ 200 } 201 usage(*argv); 202 /* NOTREACHED */ 203} 204 205/* 206 * Purge all entries in the routing tables not 207 * associated with network interfaces. 208 */ 209void 210flushroutes(argc, argv) 211 int argc; 212 char *argv[]; 213{ 214 size_t needed; 215 int mib[6], rlen, seqno; 216 char *buf, *next, *lim; 217 register struct rt_msghdr *rtm; 218 219 if (uid) { 220 errx(EX_NOPERM, "must be root to alter routing table"); 221 } 222 shutdown(s, 0); /* Don't want to read back our messages */ 223 if (argc > 1) { 224 argv++; 225 if (argc == 2 && **argv == '-') 226 switch (keyword(*argv + 1)) { 227 case K_INET: 228 af = AF_INET; 229 break; 230#ifdef INET6 231 case K_INET6: 232 af = AF_INET6; 233 break; 234#endif 235 case K_ATALK: 236 af = AF_APPLETALK; 237 break; 238#ifdef NS 239 case K_XNS: 240 af = AF_NS; 241 break; 242#endif 243 case K_LINK: 244 af = AF_LINK; 245 break; 246 default: 247 goto bad; 248 } else 249bad: usage(*argv); 250 } 251 mib[0] = CTL_NET; 252 mib[1] = PF_ROUTE; 253 mib[2] = 0; /* protocol */ 254 mib[3] = 0; /* wildcard address family */ 255 mib[4] = NET_RT_DUMP; 256 mib[5] = 0; /* no flags */ 257 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 258 err(EX_OSERR, "route-sysctl-estimate"); 259 if ((buf = malloc(needed)) == NULL) 260 errx(EX_OSERR, "malloc failed"); 261 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 262 err(EX_OSERR, "route-sysctl-get"); 263 lim = buf + needed; 264 if (verbose) 265 (void) printf("Examining routing table from sysctl\n"); 266 seqno = 0; /* ??? */ 267 for (next = buf; next < lim; next += rtm->rtm_msglen) { 268 rtm = (struct rt_msghdr *)next; 269 if (verbose) 270 print_rtmsg(rtm, rtm->rtm_msglen); 271 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 272 continue; 273 if (af) { 274 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 275 276 if (sa->sa_family != af) 277 continue; 278 } 279 if (debugonly) 280 continue; 281 rtm->rtm_type = RTM_DELETE; 282 rtm->rtm_seq = seqno; 283 rlen = write(s, next, rtm->rtm_msglen); 284 if (rlen < (int)rtm->rtm_msglen) { 285 warn("write to routing socket"); 286 (void) printf("got only %d for rlen\n", rlen); 287 break; 288 } 289 seqno++; 290 if (qflag) 291 continue; 292 if (verbose) 293 print_rtmsg(rtm, rlen); 294 else { 295 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 296 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 297 routename(sa) : netname(sa)); 298 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 299 (void) printf("%-20.20s ", routename(sa)); 300 (void) printf("done\n"); 301 } 302 } 303} 304 305const char * 306routename(sa) 307 struct sockaddr *sa; 308{ 309 register char *cp; 310 static char line[MAXHOSTNAMELEN + 1]; 311 struct hostent *hp; 312 static char domain[MAXHOSTNAMELEN + 1]; 313 static int first = 1, n; 314#ifdef NS 315 char *ns_print(); 316#endif 317 318 if (first) { 319 first = 0; 320 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 321 (cp = index(domain, '.'))) { 322 domain[MAXHOSTNAMELEN] = '\0'; 323 (void) strcpy(domain, cp + 1); 324 } else 325 domain[0] = 0; 326 } 327 328 if (sa->sa_len == 0) 329 strcpy(line, "default"); 330 else switch (sa->sa_family) { 331 332 case AF_INET: 333 { struct in_addr in; 334 in = ((struct sockaddr_in *)sa)->sin_addr; 335 336 cp = 0; 337 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 338 cp = "default"; 339 if (cp == 0 && !nflag) { 340 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 341 AF_INET); 342 if (hp) { 343 if ((cp = index(hp->h_name, '.')) && 344 !strcmp(cp + 1, domain)) 345 *cp = 0; 346 cp = hp->h_name; 347 } 348 } 349 if (cp) { 350 strncpy(line, cp, sizeof(line) - 1); 351 line[sizeof(line) - 1] = '\0'; 352 } else 353 (void) sprintf(line, "%s", inet_ntoa(in)); 354 break; 355 } 356 357#ifdef INET6 358 case AF_INET6: 359 { 360 struct sockaddr_in6 sin6; /* use static var for safety */ 361 int niflags = 0; 362#ifdef NI_WITHSCOPEID 363 niflags = NI_WITHSCOPEID; 364#endif 365 366 memset(&sin6, 0, sizeof(sin6)); 367 memcpy(&sin6, sa, sa->sa_len); 368 sin6.sin6_len = sizeof(struct sockaddr_in6); 369 sin6.sin6_family = AF_INET6; 370#ifdef __KAME__ 371 if (sa->sa_len == sizeof(struct sockaddr_in6) && 372 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 373 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 374 sin6.sin6_scope_id == 0) { 375 sin6.sin6_scope_id = 376 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 377 sin6.sin6_addr.s6_addr[2] = 0; 378 sin6.sin6_addr.s6_addr[3] = 0; 379 } 380#endif 381 if (nflag) 382 niflags |= NI_NUMERICHOST; 383 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 384 line, sizeof(line), NULL, 0, niflags) != 0) 385 strncpy(line, "invalid", sizeof(line)); 386 387 return(line); 388 } 389#endif 390 391 case AF_APPLETALK: 392 (void) snprintf(line, sizeof(line), "atalk %s", 393 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 394 break; 395 396#ifdef NS 397 case AF_NS: 398 return (ns_print((struct sockaddr_ns *)sa)); 399#endif 400 401 case AF_LINK: 402 return (link_ntoa((struct sockaddr_dl *)sa)); 403 404 default: 405 { u_short *s = (u_short *)sa; 406 u_short *slim = s + ((sa->sa_len + 1) >> 1); 407 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 408 char *cpe = line + sizeof(line); 409 410 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 411 if ((n = snprintf(cp, cpe - cp, " %x", *s)) > 0) 412 cp += n; 413 else 414 *cp = '\0'; 415 break; 416 } 417 } 418 return (line); 419} 420 421/* 422 * Return the name of the network whose address is given. 423 * The address is assumed to be that of a net or subnet, not a host. 424 */ 425const char * 426netname(sa) 427 struct sockaddr *sa; 428{ 429 char *cp = 0; 430 static char line[MAXHOSTNAMELEN + 1]; 431 struct netent *np = 0; 432 u_long net, mask; 433 register u_long i; 434 int n, subnetshift; 435#ifdef NS 436 char *ns_print(); 437#endif 438 439 switch (sa->sa_family) { 440 441 case AF_INET: 442 { struct in_addr in; 443 in = ((struct sockaddr_in *)sa)->sin_addr; 444 445 i = in.s_addr = ntohl(in.s_addr); 446 if (in.s_addr == 0) 447 cp = "default"; 448 else if (!nflag) { 449 if (IN_CLASSA(i)) { 450 mask = IN_CLASSA_NET; 451 subnetshift = 8; 452 } else if (IN_CLASSB(i)) { 453 mask = IN_CLASSB_NET; 454 subnetshift = 8; 455 } else { 456 mask = IN_CLASSC_NET; 457 subnetshift = 4; 458 } 459 /* 460 * If there are more bits than the standard mask 461 * would suggest, subnets must be in use. 462 * Guess at the subnet mask, assuming reasonable 463 * width subnet fields. 464 */ 465 while (in.s_addr &~ mask) 466 mask = (long)mask >> subnetshift; 467 net = in.s_addr & mask; 468 while ((mask & 1) == 0) 469 mask >>= 1, net >>= 1; 470 np = getnetbyaddr(net, AF_INET); 471 if (np) 472 cp = np->n_name; 473 } 474#define C(x) (unsigned)((x) & 0xff) 475 if (cp) 476 strncpy(line, cp, sizeof(line)); 477 else if ((in.s_addr & 0xffffff) == 0) 478 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 479 else if ((in.s_addr & 0xffff) == 0) 480 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 481 C(in.s_addr >> 16)); 482 else if ((in.s_addr & 0xff) == 0) 483 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 484 C(in.s_addr >> 16), C(in.s_addr >> 8)); 485 else 486 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 487 C(in.s_addr >> 16), C(in.s_addr >> 8), 488 C(in.s_addr)); 489#undef C 490 break; 491 } 492 493#ifdef INET6 494 case AF_INET6: 495 { 496 struct sockaddr_in6 sin6; /* use static var for safety */ 497 int niflags = 0; 498#ifdef NI_WITHSCOPEID 499 niflags = NI_WITHSCOPEID; 500#endif 501 502 memset(&sin6, 0, sizeof(sin6)); 503 memcpy(&sin6, sa, sa->sa_len); 504 sin6.sin6_len = sizeof(struct sockaddr_in6); 505 sin6.sin6_family = AF_INET6; 506#ifdef __KAME__ 507 if (sa->sa_len == sizeof(struct sockaddr_in6) && 508 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 509 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 510 sin6.sin6_scope_id == 0) { 511 sin6.sin6_scope_id = 512 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 513 sin6.sin6_addr.s6_addr[2] = 0; 514 sin6.sin6_addr.s6_addr[3] = 0; 515 } 516#endif 517 if (nflag) 518 niflags |= NI_NUMERICHOST; 519 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 520 line, sizeof(line), NULL, 0, niflags) != 0) 521 strncpy(line, "invalid", sizeof(line)); 522 523 return(line); 524 } 525#endif 526 527 case AF_APPLETALK: 528 (void) snprintf(line, sizeof(line), "atalk %s", 529 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 530 break; 531 532#ifdef NS 533 case AF_NS: 534 return (ns_print((struct sockaddr_ns *)sa)); 535 break; 536#endif 537 538 case AF_LINK: 539 return (link_ntoa((struct sockaddr_dl *)sa)); 540 541 542 default: 543 { u_short *s = (u_short *)sa->sa_data; 544 u_short *slim = s + ((sa->sa_len + 1)>>1); 545 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 546 char *cpe = line + sizeof(line); 547 548 while (s < slim && cp < cpe) 549 if ((n = snprintf(cp, cpe - cp, " %x", *s++)) > 0) 550 cp += n; 551 else 552 *cp = '\0'; 553 break; 554 } 555 } 556 return (line); 557} 558 559void 560set_metric(value, key) 561 char *value; 562 int key; 563{ 564 int flag = 0; 565 u_long noval, *valp = &noval; 566 567 switch (key) { 568#define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 569 caseof(K_MTU, RTV_MTU, rmx_mtu); 570 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 571 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 572 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 573 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 574 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 575 caseof(K_RTT, RTV_RTT, rmx_rtt); 576 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 577 } 578 rtm_inits |= flag; 579 if (lockrest || locking) 580 rt_metrics.rmx_locks |= flag; 581 if (locking) 582 locking = 0; 583 *valp = atoi(value); 584} 585 586void 587newroute(argc, argv) 588 int argc; 589 register char **argv; 590{ 591 char *cmd, *dest = "", *gateway = "", *err; 592 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC; 593 int key; 594 struct hostent *hp = 0; 595 596 if (uid) { 597 errx(EX_NOPERM, "must be root to alter routing table"); 598 } 599 cmd = argv[0]; 600 if (*cmd != 'g') 601 shutdown(s, 0); /* Don't want to read back our messages */ 602 while (--argc > 0) { 603 if (**(++argv)== '-') { 604 switch (key = keyword(1 + *argv)) { 605 case K_LINK: 606 af = AF_LINK; 607 aflen = sizeof(struct sockaddr_dl); 608 break; 609 case K_INET: 610 af = AF_INET; 611 aflen = sizeof(struct sockaddr_in); 612 break; 613#ifdef INET6 614 case K_INET6: 615 af = AF_INET6; 616 aflen = sizeof(struct sockaddr_in6); 617 break; 618#endif 619 case K_ATALK: 620 af = AF_APPLETALK; 621 aflen = sizeof(struct sockaddr_at); 622 break; 623 case K_SA: 624 af = PF_ROUTE; 625 aflen = sizeof(union sockunion); 626 break; 627#ifdef NS 628 case K_XNS: 629 af = AF_NS; 630 aflen = sizeof(struct sockaddr_ns); 631 break; 632#endif 633 case K_IFACE: 634 case K_INTERFACE: 635 iflag++; 636 break; 637 case K_NOSTATIC: 638 flags &= ~RTF_STATIC; 639 break; 640 case K_LLINFO: 641 flags |= RTF_LLINFO; 642 break; 643 case K_LOCK: 644 locking = 1; 645 break; 646 case K_LOCKREST: 647 lockrest = 1; 648 break; 649 case K_HOST: 650 forcehost++; 651 break; 652 case K_REJECT: 653 flags |= RTF_REJECT; 654 break; 655 case K_BLACKHOLE: 656 flags |= RTF_BLACKHOLE; 657 break; 658 case K_PROTO1: 659 flags |= RTF_PROTO1; 660 break; 661 case K_PROTO2: 662 flags |= RTF_PROTO2; 663 break; 664 case K_PROXY: 665 proxy = 1; 666 break; 667 case K_CLONING: 668 flags |= RTF_CLONING; 669 break; 670 case K_XRESOLVE: 671 flags |= RTF_XRESOLVE; 672 break; 673 case K_STATIC: 674 flags |= RTF_STATIC; 675 break; 676 case K_IFA: 677 if (!--argc) 678 usage((char *)NULL); 679 (void) getaddr(RTA_IFA, *++argv, 0); 680 break; 681 case K_IFP: 682 if (!--argc) 683 usage((char *)NULL); 684 (void) getaddr(RTA_IFP, *++argv, 0); 685 break; 686 case K_GENMASK: 687 if (!--argc) 688 usage((char *)NULL); 689 (void) getaddr(RTA_GENMASK, *++argv, 0); 690 break; 691 case K_GATEWAY: 692 if (!--argc) 693 usage((char *)NULL); 694 (void) getaddr(RTA_GATEWAY, *++argv, 0); 695 break; 696 case K_DST: 697 if (!--argc) 698 usage((char *)NULL); 699 ishost = getaddr(RTA_DST, *++argv, &hp); 700 dest = *argv; 701 break; 702 case K_NETMASK: 703 if (!--argc) 704 usage((char *)NULL); 705 (void) getaddr(RTA_NETMASK, *++argv, 0); 706 /* FALLTHROUGH */ 707 case K_NET: 708 forcenet++; 709 break; 710 case K_PREFIXLEN: 711 if (!--argc) 712 usage((char *)NULL); 713 if (prefixlen(*++argv) == -1) { 714 forcenet = 0; 715 ishost = 1; 716 } else { 717 forcenet = 1; 718 ishost = 0; 719 } 720 break; 721 case K_MTU: 722 case K_HOPCOUNT: 723 case K_EXPIRE: 724 case K_RECVPIPE: 725 case K_SENDPIPE: 726 case K_SSTHRESH: 727 case K_RTT: 728 case K_RTTVAR: 729 if (!--argc) 730 usage((char *)NULL); 731 set_metric(*++argv, key); 732 break; 733 default: 734 usage(1+*argv); 735 } 736 } else { 737 if ((rtm_addrs & RTA_DST) == 0) { 738 dest = *argv; 739 ishost = getaddr(RTA_DST, *argv, &hp); 740 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 741 gateway = *argv; 742 (void) getaddr(RTA_GATEWAY, *argv, &hp); 743 } else { 744 (void) getaddr(RTA_NETMASK, *argv, 0); 745 forcenet = 1; 746 } 747 } 748 } 749 if (forcehost) { 750 ishost = 1; 751#ifdef INET6 752 if (af == AF_INET6) { 753 rtm_addrs &= ~RTA_NETMASK; 754 memset((void *)&so_mask, 0, sizeof(so_mask)); 755 } 756#endif 757 } 758 if (forcenet) 759 ishost = 0; 760 flags |= RTF_UP; 761 if (ishost) 762 flags |= RTF_HOST; 763 if (iflag == 0) 764 flags |= RTF_GATEWAY; 765 if (proxy) { 766 so_dst.sinarp.sin_other = SIN_PROXY; 767 flags |= RTF_ANNOUNCE; 768 } 769 for (attempts = 1; ; attempts++) { 770 errno = 0; 771 if ((ret = rtmsg(*cmd, flags)) == 0) 772 break; 773 if (errno != ENETUNREACH && errno != ESRCH) 774 break; 775 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 776 hp->h_addr_list++; 777 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr, 778 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 779 } else 780 break; 781 } 782 if (*cmd == 'g') 783 exit(0); 784 oerrno = errno; 785 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 786 if (*gateway) { 787 (void) printf(": gateway %s", gateway); 788 if (attempts > 1 && ret == 0 && af == AF_INET) 789 (void) printf(" (%s)", 790 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 791 } 792 if (ret == 0) { 793 (void) printf("\n"); 794 exit(0); 795 } else { 796 switch (oerrno) { 797 case ESRCH: 798 err = "not in table"; 799 break; 800 case EBUSY: 801 err = "entry in use"; 802 break; 803 case ENOBUFS: 804 err = "routing table overflow"; 805 break; 806 case EDQUOT: /* handle recursion avoidance in rt_setgate() */ 807 err = "gateway uses the same route"; 808 break; 809 default: 810 err = strerror(oerrno); 811 break; 812 } 813 (void) printf(": %s\n", err); 814 exit(1); 815 } 816} 817 818void 819inet_makenetandmask(net, sin, bits) 820 u_long net, bits; 821 register struct sockaddr_in *sin; 822{ 823 u_long addr, mask = 0; 824 register char *cp; 825 826 rtm_addrs |= RTA_NETMASK; 827 if (net == 0) 828 mask = addr = 0; 829 else if (net < 128) { 830 addr = net << IN_CLASSA_NSHIFT; 831 mask = IN_CLASSA_NET; 832 } else if (net < 65536) { 833 addr = net << IN_CLASSB_NSHIFT; 834 mask = IN_CLASSB_NET; 835 } else if (net < 16777216L) { 836 addr = net << IN_CLASSC_NSHIFT; 837 mask = IN_CLASSC_NET; 838 } else { 839 addr = net; 840 if ((addr & IN_CLASSA_HOST) == 0) 841 mask = IN_CLASSA_NET; 842 else if ((addr & IN_CLASSB_HOST) == 0) 843 mask = IN_CLASSB_NET; 844 else if ((addr & IN_CLASSC_HOST) == 0) 845 mask = IN_CLASSC_NET; 846 else 847 mask = -1; 848 } 849 if (bits) 850 mask = 0xffffffff << (32 - bits); 851 sin->sin_addr.s_addr = htonl(addr); 852 sin = &so_mask.sin; 853 sin->sin_addr.s_addr = htonl(mask); 854 sin->sin_len = 0; 855 sin->sin_family = 0; 856 cp = (char *)(&sin->sin_addr + 1); 857 while (*--cp == 0 && cp > (char *)sin) 858 ; 859 sin->sin_len = 1 + cp - (char *)sin; 860} 861 862/* 863 * Interpret an argument as a network address of some kind, 864 * returning 1 if a host address, 0 if a network address. 865 */ 866int 867getaddr(which, s, hpp) 868 int which; 869 char *s; 870 struct hostent **hpp; 871{ 872 register sup su; 873 struct hostent *hp; 874 struct netent *np; 875 u_long val; 876 char *q; 877 int afamily; /* local copy of af so we can change it */ 878 879 if (af == 0) { 880 af = AF_INET; 881 aflen = sizeof(struct sockaddr_in); 882 } 883 afamily = af; 884 rtm_addrs |= which; 885 switch (which) { 886 case RTA_DST: 887 su = &so_dst; 888 break; 889 case RTA_GATEWAY: 890 su = &so_gate; 891 if (iflag) { 892 struct ifaddrs *ifap, *ifa; 893 struct sockaddr_dl *sdl = NULL; 894 895 if (getifaddrs(&ifap)) 896 err(1, "getifaddrs"); 897 898 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 899 if (ifa->ifa_addr->sa_family != AF_LINK) 900 continue; 901 902 if (strcmp(s, ifa->ifa_name)) 903 continue; 904 905 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 906 } 907 /* If we found it, then use it */ 908 if (sdl) { 909 /* 910 * Copy is safe since we have a 911 * sockaddr_storage member in sockunion{}. 912 * Note that we need to copy before calling 913 * freeifaddrs(). 914 */ 915 memcpy(&su->sdl, sdl, sdl->sdl_len); 916 } 917 freeifaddrs(ifap); 918 if (sdl) 919 return(1); 920 } 921 break; 922 case RTA_NETMASK: 923 su = &so_mask; 924 break; 925 case RTA_GENMASK: 926 su = &so_genmask; 927 break; 928 case RTA_IFP: 929 su = &so_ifp; 930 afamily = AF_LINK; 931 break; 932 case RTA_IFA: 933 su = &so_ifa; 934 break; 935 default: 936 usage("internal error"); 937 /*NOTREACHED*/ 938 } 939 su->sa.sa_len = aflen; 940 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 941 if (strcmp(s, "default") == 0) { 942 /* 943 * Default is net 0.0.0.0/0 944 */ 945 switch (which) { 946 case RTA_DST: 947 forcenet++; 948 /* bzero(su, sizeof(*su)); *//* for readability */ 949 (void) getaddr(RTA_NETMASK, s, 0); 950 break; 951 case RTA_NETMASK: 952 case RTA_GENMASK: 953 /* bzero(su, sizeof(*su)); *//* for readability */ 954 } 955 return (0); 956 } 957 switch (afamily) { 958#ifdef INET6 959 case AF_INET6: 960 { 961 struct addrinfo hints, *res; 962 963 memset(&hints, 0, sizeof(hints)); 964 hints.ai_family = afamily; /*AF_INET6*/ 965 hints.ai_flags = AI_NUMERICHOST; 966 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 967 if (getaddrinfo(s, "0", &hints, &res) != 0 || 968 res->ai_family != AF_INET6 || 969 res->ai_addrlen != sizeof(su->sin6)) { 970 (void) fprintf(stderr, "%s: bad value\n", s); 971 exit(1); 972 } 973 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 974#ifdef __KAME__ 975 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 976 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) && 977 su->sin6.sin6_scope_id) { 978 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 979 htons(su->sin6.sin6_scope_id); 980 su->sin6.sin6_scope_id = 0; 981 } 982#endif 983 freeaddrinfo(res); 984 return (0); 985 } 986#endif /* INET6 */ 987 988#ifdef NS 989 case AF_NS: 990 if (which == RTA_DST) { 991 extern short ns_bh[3]; 992 struct sockaddr_ns *sms = &(so_mask.sns); 993 bzero((char *)sms, sizeof(*sms)); 994 sms->sns_family = 0; 995 sms->sns_len = 6; 996 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 997 rtm_addrs |= RTA_NETMASK; 998 } 999 su->sns.sns_addr = ns_addr(s); 1000 return (!ns_nullhost(su->sns.sns_addr)); 1001#endif 1002 1003 1004 case AF_APPLETALK: 1005 if (!atalk_aton(s, &su->sat.sat_addr)) 1006 errx(EX_NOHOST, "bad address: %s", s); 1007 rtm_addrs |= RTA_NETMASK; 1008 return(forcehost || su->sat.sat_addr.s_node != 0); 1009 1010 case AF_LINK: 1011 link_addr(s, &su->sdl); 1012 return (1); 1013 1014 1015 case PF_ROUTE: 1016 su->sa.sa_len = sizeof(*su); 1017 sockaddr(s, &su->sa); 1018 return (1); 1019 1020 case AF_INET: 1021 default: 1022 break; 1023 } 1024 1025 if (hpp == NULL) 1026 hpp = &hp; 1027 *hpp = NULL; 1028 1029 q = strchr(s,'/'); 1030 if (q && which == RTA_DST) { 1031 *q = '\0'; 1032 if ((val = inet_network(s)) != INADDR_NONE) { 1033 inet_makenetandmask( 1034 val, &su->sin, strtoul(q+1, 0, 0)); 1035 return (0); 1036 } 1037 *q = '/'; 1038 } 1039 if ((which != RTA_DST || forcenet == 0) && 1040 inet_aton(s, &su->sin.sin_addr)) { 1041 val = su->sin.sin_addr.s_addr; 1042 if (which != RTA_DST || 1043 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1044 return (1); 1045 else { 1046 val = ntohl(val); 1047 goto netdone; 1048 } 1049 } 1050 if (which == RTA_DST && forcehost == 0 && 1051 ((val = inet_network(s)) != INADDR_NONE || 1052 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) { 1053netdone: 1054 inet_makenetandmask(val, &su->sin, 0); 1055 return (0); 1056 } 1057 hp = gethostbyname(s); 1058 if (hp) { 1059 *hpp = hp; 1060 su->sin.sin_family = hp->h_addrtype; 1061 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, 1062 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1063 return (1); 1064 } 1065 errx(EX_NOHOST, "bad address: %s", s); 1066} 1067 1068int 1069prefixlen(s) 1070 char *s; 1071{ 1072 int len = atoi(s), q, r; 1073 int max; 1074 char *p; 1075 1076 rtm_addrs |= RTA_NETMASK; 1077 switch (af) { 1078#ifdef INET6 1079 case AF_INET6: 1080 max = 128; 1081 p = (char *)&so_mask.sin6.sin6_addr; 1082 break; 1083#endif 1084 case AF_INET: 1085 max = 32; 1086 p = (char *)&so_mask.sin.sin_addr; 1087 break; 1088 default: 1089 (void) fprintf(stderr, "prefixlen not supported in this af\n"); 1090 exit(1); 1091 /*NOTREACHED*/ 1092 } 1093 1094 if (len < 0 || max < len) { 1095 (void) fprintf(stderr, "%s: bad value\n", s); 1096 exit(1); 1097 } 1098 1099 q = len >> 3; 1100 r = len & 7; 1101 so_mask.sa.sa_family = af; 1102 so_mask.sa.sa_len = aflen; 1103 memset((void *)p, 0, max / 8); 1104 if (q > 0) 1105 memset((void *)p, 0xff, q); 1106 if (r > 0) 1107 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1108 if (len == max) 1109 return -1; 1110 else 1111 return len; 1112} 1113 1114#ifdef NS 1115short ns_nullh[] = {0,0,0}; 1116short ns_bh[] = {-1,-1,-1}; 1117 1118char * 1119ns_print(sns) 1120 struct sockaddr_ns *sns; 1121{ 1122 struct ns_addr work; 1123 union { union ns_net net_e; u_long long_e; } net; 1124 u_short port; 1125 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 1126 char *host = ""; 1127 register char *p; 1128 register u_char *q; 1129 1130 work = sns->sns_addr; 1131 port = ntohs(work.x_port); 1132 work.x_port = 0; 1133 net.net_e = work.x_net; 1134 if (ns_nullhost(work) && net.long_e == 0) { 1135 if (!port) 1136 return ("*.*"); 1137 (void) sprintf(mybuf, "*.%XH", port); 1138 return (mybuf); 1139 } 1140 1141 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0) 1142 host = "any"; 1143 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0) 1144 host = "*"; 1145 else { 1146 q = work.x_host.c_host; 1147 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 1148 q[0], q[1], q[2], q[3], q[4], q[5]); 1149 for (p = chost; *p == '0' && p < chost + 12; p++) 1150 /* void */; 1151 host = p; 1152 } 1153 if (port) 1154 (void) sprintf(cport, ".%XH", htons(port)); 1155 else 1156 *cport = 0; 1157 1158 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 1159 (unsigned long)ntohl(net.long_e), 1160 host, cport); 1161 return (mybuf); 1162} 1163#endif 1164 1165void 1166interfaces() 1167{ 1168 size_t needed; 1169 int mib[6]; 1170 char *buf, *lim, *next; 1171 register struct rt_msghdr *rtm; 1172 1173 mib[0] = CTL_NET; 1174 mib[1] = PF_ROUTE; 1175 mib[2] = 0; /* protocol */ 1176 mib[3] = 0; /* wildcard address family */ 1177 mib[4] = NET_RT_IFLIST; 1178 mib[5] = 0; /* no flags */ 1179 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1180 err(EX_OSERR, "route-sysctl-estimate"); 1181 if ((buf = malloc(needed)) == NULL) 1182 errx(EX_OSERR, "malloc failed"); 1183 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1184 err(EX_OSERR, "actual retrieval of interface table"); 1185 lim = buf + needed; 1186 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1187 rtm = (struct rt_msghdr *)next; 1188 print_rtmsg(rtm, rtm->rtm_msglen); 1189 } 1190} 1191 1192void 1193monitor() 1194{ 1195 int n; 1196 char msg[2048]; 1197 1198 verbose = 1; 1199 if (debugonly) { 1200 interfaces(); 1201 exit(0); 1202 } 1203 for(;;) { 1204 time_t now; 1205 n = read(s, msg, 2048); 1206 now = time(NULL); 1207 (void) printf("\ngot message of size %d on %s", n, ctime(&now)); 1208 print_rtmsg((struct rt_msghdr *)msg, n); 1209 } 1210} 1211 1212struct { 1213 struct rt_msghdr m_rtm; 1214 char m_space[512]; 1215} m_rtmsg; 1216 1217int 1218rtmsg(cmd, flags) 1219 int cmd, flags; 1220{ 1221 static int seq; 1222 int rlen; 1223 register char *cp = m_rtmsg.m_space; 1224 register int l; 1225 1226#define NEXTADDR(w, u) \ 1227 if (rtm_addrs & (w)) {\ 1228 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 1229 if (verbose) sodump(&(u),"u");\ 1230 } 1231 1232 errno = 0; 1233 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 1234 if (cmd == 'a') 1235 cmd = RTM_ADD; 1236 else if (cmd == 'c') 1237 cmd = RTM_CHANGE; 1238 else if (cmd == 'g') { 1239 cmd = RTM_GET; 1240 if (so_ifp.sa.sa_family == 0) { 1241 so_ifp.sa.sa_family = AF_LINK; 1242 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1243 rtm_addrs |= RTA_IFP; 1244 } 1245 } else 1246 cmd = RTM_DELETE; 1247#define rtm m_rtmsg.m_rtm 1248 rtm.rtm_type = cmd; 1249 rtm.rtm_flags = flags; 1250 rtm.rtm_version = RTM_VERSION; 1251 rtm.rtm_seq = ++seq; 1252 rtm.rtm_addrs = rtm_addrs; 1253 rtm.rtm_rmx = rt_metrics; 1254 rtm.rtm_inits = rtm_inits; 1255 1256 if (rtm_addrs & RTA_NETMASK) 1257 mask_addr(); 1258 NEXTADDR(RTA_DST, so_dst); 1259 NEXTADDR(RTA_GATEWAY, so_gate); 1260 NEXTADDR(RTA_NETMASK, so_mask); 1261 NEXTADDR(RTA_GENMASK, so_genmask); 1262 NEXTADDR(RTA_IFP, so_ifp); 1263 NEXTADDR(RTA_IFA, so_ifa); 1264 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1265 if (verbose) 1266 print_rtmsg(&rtm, l); 1267 if (debugonly) 1268 return (0); 1269 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1270 warn("writing to routing socket"); 1271 return (-1); 1272 } 1273 if (cmd == RTM_GET) { 1274 do { 1275 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1276 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1277 if (l < 0) 1278 warn("read from routing socket"); 1279 else 1280 print_getmsg(&rtm, l); 1281 } 1282#undef rtm 1283 return (0); 1284} 1285 1286void 1287mask_addr() 1288{ 1289 int olen = so_mask.sa.sa_len; 1290 register char *cp1 = olen + (char *)&so_mask, *cp2; 1291 1292 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1293 if (*--cp1 != 0) { 1294 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1295 break; 1296 } 1297 if ((rtm_addrs & RTA_DST) == 0) 1298 return; 1299 switch (so_dst.sa.sa_family) { 1300#ifdef NS 1301 case AF_NS: 1302#endif 1303 case AF_INET: 1304#ifdef INET6 1305 case AF_INET6: 1306#endif 1307 case AF_APPLETALK: 1308 case 0: 1309 return; 1310 } 1311 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1312 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1313 while (cp2 > cp1) 1314 *--cp2 = 0; 1315 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1316 while (cp1 > so_dst.sa.sa_data) 1317 *--cp1 &= *--cp2; 1318} 1319 1320char *msgtypes[] = { 1321 "", 1322 "RTM_ADD: Add Route", 1323 "RTM_DELETE: Delete Route", 1324 "RTM_CHANGE: Change Metrics or flags", 1325 "RTM_GET: Report Metrics", 1326 "RTM_LOSING: Kernel Suspects Partitioning", 1327 "RTM_REDIRECT: Told to use different route", 1328 "RTM_MISS: Lookup failed on this address", 1329 "RTM_LOCK: fix specified metrics", 1330 "RTM_OLDADD: caused by SIOCADDRT", 1331 "RTM_OLDDEL: caused by SIOCDELRT", 1332 "RTM_RESOLVE: Route created by cloning", 1333 "RTM_NEWADDR: address being added to iface", 1334 "RTM_DELADDR: address being removed from iface", 1335 "RTM_IFINFO: iface status change", 1336 "RTM_NEWMADDR: new multicast group membership on iface", 1337 "RTM_DELMADDR: multicast group membership removed from iface", 1338 0, 1339}; 1340 1341char metricnames[] = 1342"\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1343"\1mtu"; 1344char routeflags[] = 1345"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1346"\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1347"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1348"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1349char ifnetflags[] = 1350"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1351"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1352"\017LINK2\020MULTICAST"; 1353char addrnames[] = 1354"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1355 1356void 1357print_rtmsg(rtm, msglen) 1358 register struct rt_msghdr *rtm; 1359 int msglen; 1360{ 1361 struct if_msghdr *ifm; 1362 struct ifa_msghdr *ifam; 1363#ifdef RTM_NEWMADDR 1364 struct ifma_msghdr *ifmam; 1365#endif 1366 1367 if (verbose == 0) 1368 return; 1369 if (rtm->rtm_version != RTM_VERSION) { 1370 (void) printf("routing message version %d not understood\n", 1371 rtm->rtm_version); 1372 return; 1373 } 1374 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1375 switch (rtm->rtm_type) { 1376 case RTM_IFINFO: 1377 ifm = (struct if_msghdr *)rtm; 1378 (void) printf("if# %d, flags:", ifm->ifm_index); 1379 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1380 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1381 break; 1382 case RTM_NEWADDR: 1383 case RTM_DELADDR: 1384 ifam = (struct ifa_msghdr *)rtm; 1385 (void) printf("metric %d, flags:", ifam->ifam_metric); 1386 bprintf(stdout, ifam->ifam_flags, routeflags); 1387 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1388 break; 1389#ifdef RTM_NEWMADDR 1390 case RTM_NEWMADDR: 1391 case RTM_DELMADDR: 1392 ifmam = (struct ifma_msghdr *)rtm; 1393 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1394 break; 1395#endif 1396 default: 1397 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1398 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1399 bprintf(stdout, rtm->rtm_flags, routeflags); 1400 pmsg_common(rtm); 1401 } 1402} 1403 1404void 1405print_getmsg(rtm, msglen) 1406 register struct rt_msghdr *rtm; 1407 int msglen; 1408{ 1409 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1410 struct sockaddr_dl *ifp = NULL; 1411 register struct sockaddr *sa; 1412 register char *cp; 1413 register int i; 1414 1415 (void) printf(" route to: %s\n", routename(&so_dst)); 1416 if (rtm->rtm_version != RTM_VERSION) { 1417 warnx("routing message version %d not understood", 1418 rtm->rtm_version); 1419 return; 1420 } 1421 if (rtm->rtm_msglen > msglen) { 1422 warnx("message length mismatch, in packet %d, returned %d", 1423 rtm->rtm_msglen, msglen); 1424 } 1425 if (rtm->rtm_errno) { 1426 errno = rtm->rtm_errno; 1427 warn("message indicates error %d", errno); 1428 return; 1429 } 1430 cp = ((char *)(rtm + 1)); 1431 if (rtm->rtm_addrs) 1432 for (i = 1; i; i <<= 1) 1433 if (i & rtm->rtm_addrs) { 1434 sa = (struct sockaddr *)cp; 1435 switch (i) { 1436 case RTA_DST: 1437 dst = sa; 1438 break; 1439 case RTA_GATEWAY: 1440 gate = sa; 1441 break; 1442 case RTA_NETMASK: 1443 mask = sa; 1444 break; 1445 case RTA_IFP: 1446 if (sa->sa_family == AF_LINK && 1447 ((struct sockaddr_dl *)sa)->sdl_nlen) 1448 ifp = (struct sockaddr_dl *)sa; 1449 break; 1450 } 1451 ADVANCE(cp, sa); 1452 } 1453 if (dst && mask) 1454 mask->sa_family = dst->sa_family; /* XXX */ 1455 if (dst) 1456 (void)printf("destination: %s\n", routename(dst)); 1457 if (mask) { 1458 int savenflag = nflag; 1459 1460 nflag = 1; 1461 (void)printf(" mask: %s\n", routename(mask)); 1462 nflag = savenflag; 1463 } 1464 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1465 (void)printf(" gateway: %s\n", routename(gate)); 1466 if (ifp) 1467 (void)printf(" interface: %.*s\n", 1468 ifp->sdl_nlen, ifp->sdl_data); 1469 (void)printf(" flags: "); 1470 bprintf(stdout, rtm->rtm_flags, routeflags); 1471 1472#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1473#define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1474 1475 (void) printf("\n%s\n", "\ 1476 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1477 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1478 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1479 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1480 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1481 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1482 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1483 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1484 if (rtm->rtm_rmx.rmx_expire) 1485 rtm->rtm_rmx.rmx_expire -= time(0); 1486 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1487#undef lock 1488#undef msec 1489#define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1490 if (verbose) 1491 pmsg_common(rtm); 1492 else if (rtm->rtm_addrs &~ RTA_IGN) { 1493 (void) printf("sockaddrs: "); 1494 bprintf(stdout, rtm->rtm_addrs, addrnames); 1495 putchar('\n'); 1496 } 1497#undef RTA_IGN 1498} 1499 1500void 1501pmsg_common(rtm) 1502 register struct rt_msghdr *rtm; 1503{ 1504 (void) printf("\nlocks: "); 1505 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1506 (void) printf(" inits: "); 1507 bprintf(stdout, rtm->rtm_inits, metricnames); 1508 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1509} 1510 1511void 1512pmsg_addrs(cp, addrs) 1513 char *cp; 1514 int addrs; 1515{ 1516 register struct sockaddr *sa; 1517 int i; 1518 1519 if (addrs == 0) { 1520 (void) putchar('\n'); 1521 return; 1522 } 1523 (void) printf("\nsockaddrs: "); 1524 bprintf(stdout, addrs, addrnames); 1525 (void) putchar('\n'); 1526 for (i = 1; i; i <<= 1) 1527 if (i & addrs) { 1528 sa = (struct sockaddr *)cp; 1529 (void) printf(" %s", routename(sa)); 1530 ADVANCE(cp, sa); 1531 } 1532 (void) putchar('\n'); 1533 (void) fflush(stdout); 1534} 1535 1536void 1537bprintf(fp, b, s) 1538 register FILE *fp; 1539 register int b; 1540 register u_char *s; 1541{ 1542 register int i; 1543 int gotsome = 0; 1544 1545 if (b == 0) 1546 return; 1547 while ((i = *s++) != 0) { 1548 if (b & (1 << (i-1))) { 1549 if (gotsome == 0) 1550 i = '<'; 1551 else 1552 i = ','; 1553 (void) putc(i, fp); 1554 gotsome = 1; 1555 for (; (i = *s) > 32; s++) 1556 (void) putc(i, fp); 1557 } else 1558 while (*s > 32) 1559 s++; 1560 } 1561 if (gotsome) 1562 (void) putc('>', fp); 1563} 1564 1565int 1566keyword(cp) 1567 char *cp; 1568{ 1569 register struct keytab *kt = keywords; 1570 1571 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1572 kt++; 1573 return kt->kt_i; 1574} 1575 1576void 1577sodump(su, which) 1578 register sup su; 1579 char *which; 1580{ 1581 switch (su->sa.sa_family) { 1582 case AF_LINK: 1583 (void) printf("%s: link %s; ", 1584 which, link_ntoa(&su->sdl)); 1585 break; 1586 case AF_INET: 1587 (void) printf("%s: inet %s; ", 1588 which, inet_ntoa(su->sin.sin_addr)); 1589 break; 1590 case AF_APPLETALK: 1591 (void) printf("%s: atalk %s; ", 1592 which, atalk_ntoa(su->sat.sat_addr)); 1593 break; 1594#ifdef NS 1595 case AF_NS: 1596 (void) printf("%s: xns %s; ", 1597 which, ns_ntoa(su->sns.sns_addr)); 1598 break; 1599#endif 1600 } 1601 (void) fflush(stdout); 1602} 1603 1604/* States*/ 1605#define VIRGIN 0 1606#define GOTONE 1 1607#define GOTTWO 2 1608/* Inputs */ 1609#define DIGIT (4*0) 1610#define END (4*1) 1611#define DELIM (4*2) 1612 1613void 1614sockaddr(addr, sa) 1615 register char *addr; 1616 register struct sockaddr *sa; 1617{ 1618 register char *cp = (char *)sa; 1619 int size = sa->sa_len; 1620 char *cplim = cp + size; 1621 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1622 1623 bzero(cp, size); 1624 cp++; 1625 do { 1626 if ((*addr >= '0') && (*addr <= '9')) { 1627 new = *addr - '0'; 1628 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1629 new = *addr - 'a' + 10; 1630 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1631 new = *addr - 'A' + 10; 1632 } else if (*addr == 0) 1633 state |= END; 1634 else 1635 state |= DELIM; 1636 addr++; 1637 switch (state /* | INPUT */) { 1638 case GOTTWO | DIGIT: 1639 *cp++ = byte; /*FALLTHROUGH*/ 1640 case VIRGIN | DIGIT: 1641 state = GOTONE; byte = new; continue; 1642 case GOTONE | DIGIT: 1643 state = GOTTWO; byte = new + (byte << 4); continue; 1644 default: /* | DELIM */ 1645 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1646 case GOTONE | END: 1647 case GOTTWO | END: 1648 *cp++ = byte; /* FALLTHROUGH */ 1649 case VIRGIN | END: 1650 break; 1651 } 1652 break; 1653 } while (cp < cplim); 1654 sa->sa_len = cp - (char *)sa; 1655} 1656 1657int 1658atalk_aton(const char *text, struct at_addr *addr) 1659{ 1660 u_int net, node; 1661 1662 if (sscanf(text, "%u.%u", &net, &node) != 2 1663 || net > 0xffff || node > 0xff) 1664 return(0); 1665 addr->s_net = htons(net); 1666 addr->s_node = node; 1667 return(1); 1668} 1669 1670char * 1671atalk_ntoa(struct at_addr at) 1672{ 1673 static char buf[20]; 1674 1675 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1676 return(buf); 1677} 1678