route.c revision 96997
1145524Sdarrenr/* 2145524Sdarrenr * Copyright (c) 1983, 1989, 1991, 1993 3145524Sdarrenr * The Regents of the University of California. All rights reserved. 4145524Sdarrenr * 5145524Sdarrenr * Redistribution and use in source and binary forms, with or without 6145524Sdarrenr * modification, are permitted provided that the following conditions 7145524Sdarrenr * are met: 8145524Sdarrenr * 1. Redistributions of source code must retain the above copyright 9145524Sdarrenr * 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 8.6 (Berkeley) 4/28/95"; 43#endif 44static const char rcsid[] = 45 "$FreeBSD: head/sbin/route/route.c 96997 2002-05-20 15:01:19Z ume $"; 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; 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; 110uid_t uid; 111int atalk_aton(const char *, struct at_addr *); 112char *atalk_ntoa(struct at_addr); 113const char *routename(), *netname(); 114void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 115void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 116int getaddr(), rtmsg(), x25_makemask(); 117int prefixlen(); 118extern char *iso_ntoa(); 119 120void usage(const char *) __dead2; 121 122void 123usage(cp) 124 const char *cp; 125{ 126 if (cp) 127 warnx("bad keyword: %s", cp); 128 (void) fprintf(stderr, 129 "usage: route [-dnqtv] command [[modifiers] args]\n"); 130 exit(EX_USAGE); 131 /* NOTREACHED */ 132} 133 134#define ROUNDUP(a) \ 135 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 136#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 137 138int 139main(argc, argv) 140 int argc; 141 char **argv; 142{ 143 int ch; 144 145 if (argc < 2) 146 usage((char *)NULL); 147 148 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 149 switch(ch) { 150 case 'n': 151 nflag = 1; 152 break; 153 case 'q': 154 qflag = 1; 155 break; 156 case 'v': 157 verbose = 1; 158 break; 159 case 't': 160 tflag = 1; 161 break; 162 case 'd': 163 debugonly = 1; 164 break; 165 case '?': 166 default: 167 usage((char *)NULL); 168 } 169 argc -= optind; 170 argv += optind; 171 172 pid = getpid(); 173 uid = getuid(); 174 if (tflag) 175 s = open(_PATH_DEVNULL, O_WRONLY, 0); 176 else 177 s = socket(PF_ROUTE, SOCK_RAW, 0); 178 if (s < 0) 179 err(EX_OSERR, "socket"); 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 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 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 = strchr(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 = strchr(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 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 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 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 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 struct sockaddr_in *sin; 822{ 823 u_long addr, mask = 0; 824 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#ifdef INET6 863/* 864 * XXX the function may need more improvement... 865 */ 866static void 867inet6_makenetandmask(sin6) 868 struct sockaddr_in6 *sin6; 869{ 870 char *plen; 871 struct in6_addr in6; 872 873 plen = NULL; 874 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 875 sin6->sin6_scope_id == 0) { 876 plen = "0"; 877 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 878 /* aggregatable global unicast - RFC2374 */ 879 memset(&in6, 0, sizeof(in6)); 880 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 881 plen = "64"; 882 else 883 plen = "128"; 884 } 885 886 if (plen) { 887 rtm_addrs |= RTA_NETMASK; 888 prefixlen(plen); 889 } 890} 891#endif 892 893/* 894 * Interpret an argument as a network address of some kind, 895 * returning 1 if a host address, 0 if a network address. 896 */ 897int 898getaddr(which, s, hpp) 899 int which; 900 char *s; 901 struct hostent **hpp; 902{ 903 sup su; 904 struct hostent *hp; 905 struct netent *np; 906 u_long val; 907 char *q; 908 int afamily; /* local copy of af so we can change it */ 909 910 if (af == 0) { 911 af = AF_INET; 912 aflen = sizeof(struct sockaddr_in); 913 } 914 afamily = af; 915 rtm_addrs |= which; 916 switch (which) { 917 case RTA_DST: 918 su = &so_dst; 919 break; 920 case RTA_GATEWAY: 921 su = &so_gate; 922 if (iflag) { 923 struct ifaddrs *ifap, *ifa; 924 struct sockaddr_dl *sdl = NULL; 925 926 if (getifaddrs(&ifap)) 927 err(1, "getifaddrs"); 928 929 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 930 if (ifa->ifa_addr->sa_family != AF_LINK) 931 continue; 932 933 if (strcmp(s, ifa->ifa_name)) 934 continue; 935 936 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 937 } 938 /* If we found it, then use it */ 939 if (sdl) { 940 /* 941 * Copy is safe since we have a 942 * sockaddr_storage member in sockunion{}. 943 * Note that we need to copy before calling 944 * freeifaddrs(). 945 */ 946 memcpy(&su->sdl, sdl, sdl->sdl_len); 947 } 948 freeifaddrs(ifap); 949 if (sdl) 950 return(1); 951 } 952 break; 953 case RTA_NETMASK: 954 su = &so_mask; 955 break; 956 case RTA_GENMASK: 957 su = &so_genmask; 958 break; 959 case RTA_IFP: 960 su = &so_ifp; 961 afamily = AF_LINK; 962 break; 963 case RTA_IFA: 964 su = &so_ifa; 965 break; 966 default: 967 usage("internal error"); 968 /*NOTREACHED*/ 969 } 970 su->sa.sa_len = aflen; 971 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 972 if (strcmp(s, "default") == 0) { 973 /* 974 * Default is net 0.0.0.0/0 975 */ 976 switch (which) { 977 case RTA_DST: 978 forcenet++; 979 /* bzero(su, sizeof(*su)); *//* for readability */ 980 (void) getaddr(RTA_NETMASK, s, 0); 981 break; 982 case RTA_NETMASK: 983 case RTA_GENMASK: 984 /* bzero(su, sizeof(*su)); *//* for readability */ 985 } 986 return (0); 987 } 988 switch (afamily) { 989#ifdef INET6 990 case AF_INET6: 991 { 992 struct addrinfo hints, *res; 993 994 memset(&hints, 0, sizeof(hints)); 995 hints.ai_family = afamily; /*AF_INET6*/ 996 hints.ai_flags = AI_NUMERICHOST; 997 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 998 if (getaddrinfo(s, "0", &hints, &res) != 0 || 999 res->ai_family != AF_INET6 || 1000 res->ai_addrlen != sizeof(su->sin6)) { 1001 (void) fprintf(stderr, "%s: bad value\n", s); 1002 exit(1); 1003 } 1004 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1005#ifdef __KAME__ 1006 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1007 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) && 1008 su->sin6.sin6_scope_id) { 1009 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1010 htons(su->sin6.sin6_scope_id); 1011 su->sin6.sin6_scope_id = 0; 1012 } 1013#endif 1014 if (which == RTA_DST) 1015 inet6_makenetandmask(&su->sin6); 1016 freeaddrinfo(res); 1017 return (0); 1018 } 1019#endif /* INET6 */ 1020 1021#ifdef NS 1022 case AF_NS: 1023 if (which == RTA_DST) { 1024 extern short ns_bh[3]; 1025 struct sockaddr_ns *sms = &(so_mask.sns); 1026 memset(sms, 0, sizeof(*sms)); 1027 sms->sns_family = 0; 1028 sms->sns_len = 6; 1029 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1030 rtm_addrs |= RTA_NETMASK; 1031 } 1032 su->sns.sns_addr = ns_addr(s); 1033 return (!ns_nullhost(su->sns.sns_addr)); 1034#endif 1035 1036 1037 case AF_APPLETALK: 1038 if (!atalk_aton(s, &su->sat.sat_addr)) 1039 errx(EX_NOHOST, "bad address: %s", s); 1040 rtm_addrs |= RTA_NETMASK; 1041 return(forcehost || su->sat.sat_addr.s_node != 0); 1042 1043 case AF_LINK: 1044 link_addr(s, &su->sdl); 1045 return (1); 1046 1047 1048 case PF_ROUTE: 1049 su->sa.sa_len = sizeof(*su); 1050 sockaddr(s, &su->sa); 1051 return (1); 1052 1053 case AF_INET: 1054 default: 1055 break; 1056 } 1057 1058 if (hpp == NULL) 1059 hpp = &hp; 1060 *hpp = NULL; 1061 1062 q = strchr(s,'/'); 1063 if (q && which == RTA_DST) { 1064 *q = '\0'; 1065 if ((val = inet_network(s)) != INADDR_NONE) { 1066 inet_makenetandmask( 1067 val, &su->sin, strtoul(q+1, 0, 0)); 1068 return (0); 1069 } 1070 *q = '/'; 1071 } 1072 if ((which != RTA_DST || forcenet == 0) && 1073 inet_aton(s, &su->sin.sin_addr)) { 1074 val = su->sin.sin_addr.s_addr; 1075 if (which != RTA_DST || 1076 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1077 return (1); 1078 else { 1079 val = ntohl(val); 1080 goto netdone; 1081 } 1082 } 1083 if (which == RTA_DST && forcehost == 0 && 1084 ((val = inet_network(s)) != INADDR_NONE || 1085 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) { 1086netdone: 1087 inet_makenetandmask(val, &su->sin, 0); 1088 return (0); 1089 } 1090 hp = gethostbyname(s); 1091 if (hp) { 1092 *hpp = hp; 1093 su->sin.sin_family = hp->h_addrtype; 1094 memmove((char *)&su->sin.sin_addr, hp->h_addr, 1095 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1096 return (1); 1097 } 1098 errx(EX_NOHOST, "bad address: %s", s); 1099} 1100 1101int 1102prefixlen(s) 1103 char *s; 1104{ 1105 int len = atoi(s), q, r; 1106 int max; 1107 char *p; 1108 1109 rtm_addrs |= RTA_NETMASK; 1110 switch (af) { 1111#ifdef INET6 1112 case AF_INET6: 1113 max = 128; 1114 p = (char *)&so_mask.sin6.sin6_addr; 1115 break; 1116#endif 1117 case AF_INET: 1118 max = 32; 1119 p = (char *)&so_mask.sin.sin_addr; 1120 break; 1121 default: 1122 (void) fprintf(stderr, "prefixlen not supported in this af\n"); 1123 exit(1); 1124 /*NOTREACHED*/ 1125 } 1126 1127 if (len < 0 || max < len) { 1128 (void) fprintf(stderr, "%s: bad value\n", s); 1129 exit(1); 1130 } 1131 1132 q = len >> 3; 1133 r = len & 7; 1134 so_mask.sa.sa_family = af; 1135 so_mask.sa.sa_len = aflen; 1136 memset((void *)p, 0, max / 8); 1137 if (q > 0) 1138 memset((void *)p, 0xff, q); 1139 if (r > 0) 1140 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1141 if (len == max) 1142 return -1; 1143 else 1144 return len; 1145} 1146 1147#ifdef NS 1148short ns_nullh[] = {0,0,0}; 1149short ns_bh[] = {-1,-1,-1}; 1150 1151char * 1152ns_print(sns) 1153 struct sockaddr_ns *sns; 1154{ 1155 struct ns_addr work; 1156 union { union ns_net net_e; u_long long_e; } net; 1157 u_short port; 1158 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 1159 char *host = ""; 1160 char *p; 1161 u_char *q; 1162 1163 work = sns->sns_addr; 1164 port = ntohs(work.x_port); 1165 work.x_port = 0; 1166 net.net_e = work.x_net; 1167 if (ns_nullhost(work) && net.long_e == 0) { 1168 if (!port) 1169 return ("*.*"); 1170 (void) sprintf(mybuf, "*.%XH", port); 1171 return (mybuf); 1172 } 1173 1174 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1175 host = "any"; 1176 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1177 host = "*"; 1178 else { 1179 q = work.x_host.c_host; 1180 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 1181 q[0], q[1], q[2], q[3], q[4], q[5]); 1182 for (p = chost; *p == '0' && p < chost + 12; p++) 1183 /* void */; 1184 host = p; 1185 } 1186 if (port) 1187 (void) sprintf(cport, ".%XH", htons(port)); 1188 else 1189 *cport = 0; 1190 1191 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 1192 (unsigned long)ntohl(net.long_e), 1193 host, cport); 1194 return (mybuf); 1195} 1196#endif 1197 1198void 1199interfaces() 1200{ 1201 size_t needed; 1202 int mib[6]; 1203 char *buf, *lim, *next; 1204 struct rt_msghdr *rtm; 1205 1206 mib[0] = CTL_NET; 1207 mib[1] = PF_ROUTE; 1208 mib[2] = 0; /* protocol */ 1209 mib[3] = 0; /* wildcard address family */ 1210 mib[4] = NET_RT_IFLIST; 1211 mib[5] = 0; /* no flags */ 1212 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1213 err(EX_OSERR, "route-sysctl-estimate"); 1214 if ((buf = malloc(needed)) == NULL) 1215 errx(EX_OSERR, "malloc failed"); 1216 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1217 err(EX_OSERR, "actual retrieval of interface table"); 1218 lim = buf + needed; 1219 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1220 rtm = (struct rt_msghdr *)next; 1221 print_rtmsg(rtm, rtm->rtm_msglen); 1222 } 1223} 1224 1225void 1226monitor() 1227{ 1228 int n; 1229 char msg[2048]; 1230 1231 verbose = 1; 1232 if (debugonly) { 1233 interfaces(); 1234 exit(0); 1235 } 1236 for(;;) { 1237 time_t now; 1238 n = read(s, msg, 2048); 1239 now = time(NULL); 1240 (void) printf("\ngot message of size %d on %s", n, ctime(&now)); 1241 print_rtmsg((struct rt_msghdr *)msg, n); 1242 } 1243} 1244 1245struct { 1246 struct rt_msghdr m_rtm; 1247 char m_space[512]; 1248} m_rtmsg; 1249 1250int 1251rtmsg(cmd, flags) 1252 int cmd, flags; 1253{ 1254 static int seq; 1255 int rlen; 1256 char *cp = m_rtmsg.m_space; 1257 int l; 1258 1259#define NEXTADDR(w, u) \ 1260 if (rtm_addrs & (w)) {\ 1261 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1262 if (verbose) sodump(&(u),"u");\ 1263 } 1264 1265 errno = 0; 1266 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1267 if (cmd == 'a') 1268 cmd = RTM_ADD; 1269 else if (cmd == 'c') 1270 cmd = RTM_CHANGE; 1271 else if (cmd == 'g') { 1272 cmd = RTM_GET; 1273 if (so_ifp.sa.sa_family == 0) { 1274 so_ifp.sa.sa_family = AF_LINK; 1275 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1276 rtm_addrs |= RTA_IFP; 1277 } 1278 } else 1279 cmd = RTM_DELETE; 1280#define rtm m_rtmsg.m_rtm 1281 rtm.rtm_type = cmd; 1282 rtm.rtm_flags = flags; 1283 rtm.rtm_version = RTM_VERSION; 1284 rtm.rtm_seq = ++seq; 1285 rtm.rtm_addrs = rtm_addrs; 1286 rtm.rtm_rmx = rt_metrics; 1287 rtm.rtm_inits = rtm_inits; 1288 1289 if (rtm_addrs & RTA_NETMASK) 1290 mask_addr(); 1291 NEXTADDR(RTA_DST, so_dst); 1292 NEXTADDR(RTA_GATEWAY, so_gate); 1293 NEXTADDR(RTA_NETMASK, so_mask); 1294 NEXTADDR(RTA_GENMASK, so_genmask); 1295 NEXTADDR(RTA_IFP, so_ifp); 1296 NEXTADDR(RTA_IFA, so_ifa); 1297 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1298 if (verbose) 1299 print_rtmsg(&rtm, l); 1300 if (debugonly) 1301 return (0); 1302 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1303 warn("writing to routing socket"); 1304 return (-1); 1305 } 1306 if (cmd == RTM_GET) { 1307 do { 1308 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1309 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1310 if (l < 0) 1311 warn("read from routing socket"); 1312 else 1313 print_getmsg(&rtm, l); 1314 } 1315#undef rtm 1316 return (0); 1317} 1318 1319void 1320mask_addr() 1321{ 1322 int olen = so_mask.sa.sa_len; 1323 char *cp1 = olen + (char *)&so_mask, *cp2; 1324 1325 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1326 if (*--cp1 != 0) { 1327 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1328 break; 1329 } 1330 if ((rtm_addrs & RTA_DST) == 0) 1331 return; 1332 switch (so_dst.sa.sa_family) { 1333#ifdef NS 1334 case AF_NS: 1335#endif 1336 case AF_INET: 1337#ifdef INET6 1338 case AF_INET6: 1339#endif 1340 case AF_APPLETALK: 1341 case 0: 1342 return; 1343 } 1344 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1345 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1346 while (cp2 > cp1) 1347 *--cp2 = 0; 1348 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1349 while (cp1 > so_dst.sa.sa_data) 1350 *--cp1 &= *--cp2; 1351} 1352 1353char *msgtypes[] = { 1354 "", 1355 "RTM_ADD: Add Route", 1356 "RTM_DELETE: Delete Route", 1357 "RTM_CHANGE: Change Metrics or flags", 1358 "RTM_GET: Report Metrics", 1359 "RTM_LOSING: Kernel Suspects Partitioning", 1360 "RTM_REDIRECT: Told to use different route", 1361 "RTM_MISS: Lookup failed on this address", 1362 "RTM_LOCK: fix specified metrics", 1363 "RTM_OLDADD: caused by SIOCADDRT", 1364 "RTM_OLDDEL: caused by SIOCDELRT", 1365 "RTM_RESOLVE: Route created by cloning", 1366 "RTM_NEWADDR: address being added to iface", 1367 "RTM_DELADDR: address being removed from iface", 1368 "RTM_IFINFO: iface status change", 1369 "RTM_NEWMADDR: new multicast group membership on iface", 1370 "RTM_DELMADDR: multicast group membership removed from iface", 1371 "RTM_IFANNOUNCE: interface arrival/departure", 1372 0, 1373}; 1374 1375char metricnames[] = 1376"\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1377"\1mtu"; 1378char routeflags[] = 1379"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1380"\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1381"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1382"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1383char ifnetflags[] = 1384"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1385"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1386"\017LINK2\020MULTICAST"; 1387char addrnames[] = 1388"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1389 1390void 1391print_rtmsg(rtm, msglen) 1392 struct rt_msghdr *rtm; 1393 int msglen; 1394{ 1395 struct if_msghdr *ifm; 1396 struct ifa_msghdr *ifam; 1397#ifdef RTM_NEWMADDR 1398 struct ifma_msghdr *ifmam; 1399#endif 1400 struct if_announcemsghdr *ifan; 1401 1402 if (verbose == 0) 1403 return; 1404 if (rtm->rtm_version != RTM_VERSION) { 1405 (void) printf("routing message version %d not understood\n", 1406 rtm->rtm_version); 1407 return; 1408 } 1409 if (msgtypes[rtm->rtm_type] != NULL) 1410 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1411 else 1412 (void)printf("#%d: ", rtm->rtm_type); 1413 (void)printf("len %d, ", rtm->rtm_msglen); 1414 switch (rtm->rtm_type) { 1415 case RTM_IFINFO: 1416 ifm = (struct if_msghdr *)rtm; 1417 (void) printf("if# %d, flags:", ifm->ifm_index); 1418 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1419 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1420 break; 1421 case RTM_NEWADDR: 1422 case RTM_DELADDR: 1423 ifam = (struct ifa_msghdr *)rtm; 1424 (void) printf("metric %d, flags:", ifam->ifam_metric); 1425 bprintf(stdout, ifam->ifam_flags, routeflags); 1426 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1427 break; 1428#ifdef RTM_NEWMADDR 1429 case RTM_NEWMADDR: 1430 case RTM_DELMADDR: 1431 ifmam = (struct ifma_msghdr *)rtm; 1432 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1433 break; 1434#endif 1435 case RTM_IFANNOUNCE: 1436 ifan = (struct if_announcemsghdr *)rtm; 1437 (void) printf("if# %d, what: ", ifan->ifan_index); 1438 switch (ifan->ifan_what) { 1439 case IFAN_ARRIVAL: 1440 printf("arrival"); 1441 break; 1442 case IFAN_DEPARTURE: 1443 printf("departure"); 1444 break; 1445 default: 1446 printf("#%d", ifan->ifan_what); 1447 break; 1448 } 1449 printf("\n"); 1450 break; 1451 1452 default: 1453 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1454 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1455 bprintf(stdout, rtm->rtm_flags, routeflags); 1456 pmsg_common(rtm); 1457 } 1458} 1459 1460void 1461print_getmsg(rtm, msglen) 1462 struct rt_msghdr *rtm; 1463 int msglen; 1464{ 1465 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1466 struct sockaddr_dl *ifp = NULL; 1467 struct sockaddr *sa; 1468 char *cp; 1469 int i; 1470 1471 (void) printf(" route to: %s\n", routename(&so_dst)); 1472 if (rtm->rtm_version != RTM_VERSION) { 1473 warnx("routing message version %d not understood", 1474 rtm->rtm_version); 1475 return; 1476 } 1477 if (rtm->rtm_msglen > msglen) { 1478 warnx("message length mismatch, in packet %d, returned %d", 1479 rtm->rtm_msglen, msglen); 1480 } 1481 if (rtm->rtm_errno) { 1482 errno = rtm->rtm_errno; 1483 warn("message indicates error %d", errno); 1484 return; 1485 } 1486 cp = ((char *)(rtm + 1)); 1487 if (rtm->rtm_addrs) 1488 for (i = 1; i; i <<= 1) 1489 if (i & rtm->rtm_addrs) { 1490 sa = (struct sockaddr *)cp; 1491 switch (i) { 1492 case RTA_DST: 1493 dst = sa; 1494 break; 1495 case RTA_GATEWAY: 1496 gate = sa; 1497 break; 1498 case RTA_NETMASK: 1499 mask = sa; 1500 break; 1501 case RTA_IFP: 1502 if (sa->sa_family == AF_LINK && 1503 ((struct sockaddr_dl *)sa)->sdl_nlen) 1504 ifp = (struct sockaddr_dl *)sa; 1505 break; 1506 } 1507 ADVANCE(cp, sa); 1508 } 1509 if (dst && mask) 1510 mask->sa_family = dst->sa_family; /* XXX */ 1511 if (dst) 1512 (void)printf("destination: %s\n", routename(dst)); 1513 if (mask) { 1514 int savenflag = nflag; 1515 1516 nflag = 1; 1517 (void)printf(" mask: %s\n", routename(mask)); 1518 nflag = savenflag; 1519 } 1520 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1521 (void)printf(" gateway: %s\n", routename(gate)); 1522 if (ifp) 1523 (void)printf(" interface: %.*s\n", 1524 ifp->sdl_nlen, ifp->sdl_data); 1525 (void)printf(" flags: "); 1526 bprintf(stdout, rtm->rtm_flags, routeflags); 1527 1528#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1529#define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1530 1531 (void) printf("\n%s\n", "\ 1532 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1533 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1534 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1535 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1536 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1537 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1538 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1539 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1540 if (rtm->rtm_rmx.rmx_expire) 1541 rtm->rtm_rmx.rmx_expire -= time(0); 1542 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1543#undef lock 1544#undef msec 1545#define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1546 if (verbose) 1547 pmsg_common(rtm); 1548 else if (rtm->rtm_addrs &~ RTA_IGN) { 1549 (void) printf("sockaddrs: "); 1550 bprintf(stdout, rtm->rtm_addrs, addrnames); 1551 putchar('\n'); 1552 } 1553#undef RTA_IGN 1554} 1555 1556void 1557pmsg_common(rtm) 1558 struct rt_msghdr *rtm; 1559{ 1560 (void) printf("\nlocks: "); 1561 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1562 (void) printf(" inits: "); 1563 bprintf(stdout, rtm->rtm_inits, metricnames); 1564 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1565} 1566 1567void 1568pmsg_addrs(cp, addrs) 1569 char *cp; 1570 int addrs; 1571{ 1572 struct sockaddr *sa; 1573 int i; 1574 1575 if (addrs == 0) { 1576 (void) putchar('\n'); 1577 return; 1578 } 1579 (void) printf("\nsockaddrs: "); 1580 bprintf(stdout, addrs, addrnames); 1581 (void) putchar('\n'); 1582 for (i = 1; i; i <<= 1) 1583 if (i & addrs) { 1584 sa = (struct sockaddr *)cp; 1585 (void) printf(" %s", routename(sa)); 1586 ADVANCE(cp, sa); 1587 } 1588 (void) putchar('\n'); 1589 (void) fflush(stdout); 1590} 1591 1592void 1593bprintf(fp, b, s) 1594 FILE *fp; 1595 int b; 1596 u_char *s; 1597{ 1598 int i; 1599 int gotsome = 0; 1600 1601 if (b == 0) 1602 return; 1603 while ((i = *s++) != 0) { 1604 if (b & (1 << (i-1))) { 1605 if (gotsome == 0) 1606 i = '<'; 1607 else 1608 i = ','; 1609 (void) putc(i, fp); 1610 gotsome = 1; 1611 for (; (i = *s) > 32; s++) 1612 (void) putc(i, fp); 1613 } else 1614 while (*s > 32) 1615 s++; 1616 } 1617 if (gotsome) 1618 (void) putc('>', fp); 1619} 1620 1621int 1622keyword(cp) 1623 char *cp; 1624{ 1625 struct keytab *kt = keywords; 1626 1627 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1628 kt++; 1629 return kt->kt_i; 1630} 1631 1632void 1633sodump(su, which) 1634 sup su; 1635 char *which; 1636{ 1637 switch (su->sa.sa_family) { 1638 case AF_LINK: 1639 (void) printf("%s: link %s; ", 1640 which, link_ntoa(&su->sdl)); 1641 break; 1642 case AF_INET: 1643 (void) printf("%s: inet %s; ", 1644 which, inet_ntoa(su->sin.sin_addr)); 1645 break; 1646 case AF_APPLETALK: 1647 (void) printf("%s: atalk %s; ", 1648 which, atalk_ntoa(su->sat.sat_addr)); 1649 break; 1650#ifdef NS 1651 case AF_NS: 1652 (void) printf("%s: xns %s; ", 1653 which, ns_ntoa(su->sns.sns_addr)); 1654 break; 1655#endif 1656 } 1657 (void) fflush(stdout); 1658} 1659 1660/* States*/ 1661#define VIRGIN 0 1662#define GOTONE 1 1663#define GOTTWO 2 1664/* Inputs */ 1665#define DIGIT (4*0) 1666#define END (4*1) 1667#define DELIM (4*2) 1668 1669void 1670sockaddr(addr, sa) 1671 char *addr; 1672 struct sockaddr *sa; 1673{ 1674 char *cp = (char *)sa; 1675 int size = sa->sa_len; 1676 char *cplim = cp + size; 1677 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1678 1679 memset(cp, 0, size); 1680 cp++; 1681 do { 1682 if ((*addr >= '0') && (*addr <= '9')) { 1683 new = *addr - '0'; 1684 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1685 new = *addr - 'a' + 10; 1686 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1687 new = *addr - 'A' + 10; 1688 } else if (*addr == 0) 1689 state |= END; 1690 else 1691 state |= DELIM; 1692 addr++; 1693 switch (state /* | INPUT */) { 1694 case GOTTWO | DIGIT: 1695 *cp++ = byte; /*FALLTHROUGH*/ 1696 case VIRGIN | DIGIT: 1697 state = GOTONE; byte = new; continue; 1698 case GOTONE | DIGIT: 1699 state = GOTTWO; byte = new + (byte << 4); continue; 1700 default: /* | DELIM */ 1701 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1702 case GOTONE | END: 1703 case GOTTWO | END: 1704 *cp++ = byte; /* FALLTHROUGH */ 1705 case VIRGIN | END: 1706 break; 1707 } 1708 break; 1709 } while (cp < cplim); 1710 sa->sa_len = cp - (char *)sa; 1711} 1712 1713int 1714atalk_aton(const char *text, struct at_addr *addr) 1715{ 1716 u_int net, node; 1717 1718 if (sscanf(text, "%u.%u", &net, &node) != 2 1719 || net > 0xffff || node > 0xff) 1720 return(0); 1721 addr->s_net = htons(net); 1722 addr->s_node = node; 1723 return(1); 1724} 1725 1726char * 1727atalk_ntoa(struct at_addr at) 1728{ 1729 static char buf[20]; 1730 1731 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1732 return(buf); 1733} 1734