route.c revision 146546
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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#ifndef lint 31static const char copyright[] = 32"@(#) Copyright (c) 1983, 1989, 1991, 1993\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34#endif /* not lint */ 35 36#ifndef lint 37#if 0 38static char sccsid[] = "@(#)route.c 8.6 (Berkeley) 4/28/95"; 39#endif 40static const char rcsid[] = 41 "$FreeBSD: head/sbin/route/route.c 146546 2005-05-23 14:12:32Z ume $"; 42#endif /* not lint */ 43 44#include <sys/param.h> 45#include <sys/file.h> 46#include <sys/socket.h> 47#include <sys/ioctl.h> 48#include <sys/sysctl.h> 49#include <sys/types.h> 50 51#include <net/if.h> 52#include <net/route.h> 53#include <net/if_dl.h> 54#include <netinet/in.h> 55#include <netinet/if_ether.h> 56#include <netatalk/at.h> 57#include <arpa/inet.h> 58#include <netdb.h> 59 60#include <ctype.h> 61#include <err.h> 62#include <errno.h> 63#include <paths.h> 64#include <stdio.h> 65#include <stdlib.h> 66#include <string.h> 67#include <sysexits.h> 68#include <unistd.h> 69#include <ifaddrs.h> 70 71struct keytab { 72 char *kt_cp; 73 int kt_i; 74} keywords[] = { 75#include "keywords.h" 76 {0, 0} 77}; 78 79struct ortentry route; 80union sockunion { 81 struct sockaddr sa; 82 struct sockaddr_in sin; 83#ifdef INET6 84 struct sockaddr_in6 sin6; 85#endif 86 struct sockaddr_at sat; 87 struct sockaddr_dl sdl; 88 struct sockaddr_inarp sinarp; 89 struct sockaddr_storage ss; /* added to avoid memory overrun */ 90} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 91 92typedef union sockunion *sup; 93int pid, rtm_addrs; 94int s; 95int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 96int iflag, verbose, aflen = sizeof (struct sockaddr_in); 97int locking, lockrest, debugonly; 98struct rt_metrics rt_metrics; 99u_long rtm_inits; 100uid_t uid; 101int atalk_aton(const char *, struct at_addr *); 102char *atalk_ntoa(struct at_addr); 103const char *routename(), *netname(); 104void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 105void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 106#ifdef INET6 107static int inet6_makenetandmask(struct sockaddr_in6 *, char *); 108#endif 109int getaddr(), rtmsg(), x25_makemask(); 110int prefixlen(); 111extern char *iso_ntoa(); 112 113void usage(const char *) __dead2; 114 115void 116usage(cp) 117 const char *cp; 118{ 119 if (cp) 120 warnx("bad keyword: %s", cp); 121 (void) fprintf(stderr, 122 "usage: route [-dnqtv] command [[modifiers] args]\n"); 123 exit(EX_USAGE); 124 /* NOTREACHED */ 125} 126 127int 128main(argc, argv) 129 int argc; 130 char **argv; 131{ 132 int ch; 133 134 if (argc < 2) 135 usage((char *)NULL); 136 137 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 138 switch(ch) { 139 case 'n': 140 nflag = 1; 141 break; 142 case 'q': 143 qflag = 1; 144 break; 145 case 'v': 146 verbose = 1; 147 break; 148 case 't': 149 tflag = 1; 150 break; 151 case 'd': 152 debugonly = 1; 153 break; 154 case '?': 155 default: 156 usage((char *)NULL); 157 } 158 argc -= optind; 159 argv += optind; 160 161 pid = getpid(); 162 uid = geteuid(); 163 if (tflag) 164 s = open(_PATH_DEVNULL, O_WRONLY, 0); 165 else 166 s = socket(PF_ROUTE, SOCK_RAW, 0); 167 if (s < 0) 168 err(EX_OSERR, "socket"); 169 if (*argv) 170 switch (keyword(*argv)) { 171 case K_GET: 172 uid = 0; 173 /* FALLTHROUGH */ 174 175 case K_CHANGE: 176 case K_ADD: 177 case K_DELETE: 178 newroute(argc, argv); 179 /* NOTREACHED */ 180 181 case K_MONITOR: 182 monitor(); 183 /* NOTREACHED */ 184 185 case K_FLUSH: 186 flushroutes(argc, argv); 187 exit(0); 188 /* NOTREACHED */ 189 } 190 usage(*argv); 191 /* NOTREACHED */ 192} 193 194/* 195 * Purge all entries in the routing tables not 196 * associated with network interfaces. 197 */ 198void 199flushroutes(argc, argv) 200 int argc; 201 char *argv[]; 202{ 203 size_t needed; 204 int mib[6], rlen, seqno, count = 0; 205 char *buf, *next, *lim; 206 struct rt_msghdr *rtm; 207 208 if (uid && !debugonly) { 209 errx(EX_NOPERM, "must be root to alter routing table"); 210 } 211 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 212 if (argc > 1) { 213 argv++; 214 if (argc == 2 && **argv == '-') 215 switch (keyword(*argv + 1)) { 216 case K_INET: 217 af = AF_INET; 218 break; 219#ifdef INET6 220 case K_INET6: 221 af = AF_INET6; 222 break; 223#endif 224 case K_ATALK: 225 af = AF_APPLETALK; 226 break; 227 case K_LINK: 228 af = AF_LINK; 229 break; 230 default: 231 goto bad; 232 } else 233bad: usage(*argv); 234 } 235retry: 236 mib[0] = CTL_NET; 237 mib[1] = PF_ROUTE; 238 mib[2] = 0; /* protocol */ 239 mib[3] = 0; /* wildcard address family */ 240 mib[4] = NET_RT_DUMP; 241 mib[5] = 0; /* no flags */ 242 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 243 err(EX_OSERR, "route-sysctl-estimate"); 244 if ((buf = malloc(needed)) == NULL) 245 errx(EX_OSERR, "malloc failed"); 246 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 247 if (errno == ENOMEM && count++ < 10) { 248 warnx("Routing table grew, retrying"); 249 sleep(1); 250 free(buf); 251 goto retry; 252 } 253 err(EX_OSERR, "route-sysctl-get"); 254 } 255 lim = buf + needed; 256 if (verbose) 257 (void) printf("Examining routing table from sysctl\n"); 258 seqno = 0; /* ??? */ 259 for (next = buf; next < lim; next += rtm->rtm_msglen) { 260 rtm = (struct rt_msghdr *)next; 261 if (verbose) 262 print_rtmsg(rtm, rtm->rtm_msglen); 263 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 264 continue; 265 if (af) { 266 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 267 268 if (sa->sa_family != af) 269 continue; 270 } 271 if (debugonly) 272 continue; 273 rtm->rtm_type = RTM_DELETE; 274 rtm->rtm_seq = seqno; 275 rlen = write(s, next, rtm->rtm_msglen); 276 if (rlen < 0 && errno == EPERM) 277 err(1, "write to routing socket"); 278 if (rlen < (int)rtm->rtm_msglen) { 279 warn("write to routing socket"); 280 (void) printf("got only %d for rlen\n", rlen); 281 free(buf); 282 goto retry; 283 break; 284 } 285 seqno++; 286 if (qflag) 287 continue; 288 if (verbose) 289 print_rtmsg(rtm, rlen); 290 else { 291 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 292 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 293 routename(sa) : netname(sa)); 294 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa); 295 (void) printf("%-20.20s ", routename(sa)); 296 (void) printf("done\n"); 297 } 298 } 299} 300 301const char * 302routename(sa) 303 struct sockaddr *sa; 304{ 305 char *cp; 306 static char line[MAXHOSTNAMELEN + 1]; 307 struct hostent *hp; 308 static char domain[MAXHOSTNAMELEN + 1]; 309 static int first = 1, n; 310 311 if (first) { 312 first = 0; 313 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 314 (cp = strchr(domain, '.'))) { 315 domain[MAXHOSTNAMELEN] = '\0'; 316 (void) strcpy(domain, cp + 1); 317 } else 318 domain[0] = 0; 319 } 320 321 if (sa->sa_len == 0) 322 strcpy(line, "default"); 323 else switch (sa->sa_family) { 324 325 case AF_INET: 326 { struct in_addr in; 327 in = ((struct sockaddr_in *)sa)->sin_addr; 328 329 cp = 0; 330 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 331 cp = "default"; 332 if (cp == 0 && !nflag) { 333 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 334 AF_INET); 335 if (hp) { 336 if ((cp = strchr(hp->h_name, '.')) && 337 !strcmp(cp + 1, domain)) 338 *cp = 0; 339 cp = hp->h_name; 340 } 341 } 342 if (cp) { 343 strncpy(line, cp, sizeof(line) - 1); 344 line[sizeof(line) - 1] = '\0'; 345 } else 346 (void) sprintf(line, "%s", inet_ntoa(in)); 347 break; 348 } 349 350#ifdef INET6 351 case AF_INET6: 352 { 353 struct sockaddr_in6 sin6; /* use static var for safety */ 354 int niflags = 0; 355 356 memset(&sin6, 0, sizeof(sin6)); 357 memcpy(&sin6, sa, sa->sa_len); 358 sin6.sin6_len = sizeof(struct sockaddr_in6); 359 sin6.sin6_family = AF_INET6; 360#ifdef __KAME__ 361 if (sa->sa_len == sizeof(struct sockaddr_in6) && 362 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 363 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 364 sin6.sin6_scope_id == 0) { 365 sin6.sin6_scope_id = 366 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 367 sin6.sin6_addr.s6_addr[2] = 0; 368 sin6.sin6_addr.s6_addr[3] = 0; 369 } 370#endif 371 if (nflag) 372 niflags |= NI_NUMERICHOST; 373 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 374 line, sizeof(line), NULL, 0, niflags) != 0) 375 strncpy(line, "invalid", sizeof(line)); 376 377 return(line); 378 } 379#endif 380 381 case AF_APPLETALK: 382 (void) snprintf(line, sizeof(line), "atalk %s", 383 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 384 break; 385 386 case AF_LINK: 387 return (link_ntoa((struct sockaddr_dl *)sa)); 388 389 default: 390 { u_short *s = (u_short *)sa; 391 u_short *slim = s + ((sa->sa_len + 1) >> 1); 392 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 393 char *cpe = line + sizeof(line); 394 395 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 396 if ((n = snprintf(cp, cpe - cp, " %x", *s)) > 0) 397 cp += n; 398 else 399 *cp = '\0'; 400 break; 401 } 402 } 403 return (line); 404} 405 406/* 407 * Return the name of the network whose address is given. 408 * The address is assumed to be that of a net or subnet, not a host. 409 */ 410const char * 411netname(sa) 412 struct sockaddr *sa; 413{ 414 char *cp = 0; 415 static char line[MAXHOSTNAMELEN + 1]; 416 struct netent *np = 0; 417 u_long net, mask; 418 u_long i; 419 int n, subnetshift; 420 421 switch (sa->sa_family) { 422 423 case AF_INET: 424 { struct in_addr in; 425 in = ((struct sockaddr_in *)sa)->sin_addr; 426 427 i = in.s_addr = ntohl(in.s_addr); 428 if (in.s_addr == 0) 429 cp = "default"; 430 else if (!nflag) { 431 if (IN_CLASSA(i)) { 432 mask = IN_CLASSA_NET; 433 subnetshift = 8; 434 } else if (IN_CLASSB(i)) { 435 mask = IN_CLASSB_NET; 436 subnetshift = 8; 437 } else { 438 mask = IN_CLASSC_NET; 439 subnetshift = 4; 440 } 441 /* 442 * If there are more bits than the standard mask 443 * would suggest, subnets must be in use. 444 * Guess at the subnet mask, assuming reasonable 445 * width subnet fields. 446 */ 447 while (in.s_addr &~ mask) 448 mask = (long)mask >> subnetshift; 449 net = in.s_addr & mask; 450 while ((mask & 1) == 0) 451 mask >>= 1, net >>= 1; 452 np = getnetbyaddr(net, AF_INET); 453 if (np) 454 cp = np->n_name; 455 } 456#define C(x) (unsigned)((x) & 0xff) 457 if (cp) 458 strncpy(line, cp, sizeof(line)); 459 else if ((in.s_addr & 0xffffff) == 0) 460 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 461 else if ((in.s_addr & 0xffff) == 0) 462 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 463 C(in.s_addr >> 16)); 464 else if ((in.s_addr & 0xff) == 0) 465 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 466 C(in.s_addr >> 16), C(in.s_addr >> 8)); 467 else 468 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 469 C(in.s_addr >> 16), C(in.s_addr >> 8), 470 C(in.s_addr)); 471#undef C 472 break; 473 } 474 475#ifdef INET6 476 case AF_INET6: 477 { 478 struct sockaddr_in6 sin6; /* use static var for safety */ 479 int niflags = 0; 480 481 memset(&sin6, 0, sizeof(sin6)); 482 memcpy(&sin6, sa, sa->sa_len); 483 sin6.sin6_len = sizeof(struct sockaddr_in6); 484 sin6.sin6_family = AF_INET6; 485#ifdef __KAME__ 486 if (sa->sa_len == sizeof(struct sockaddr_in6) && 487 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 488 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 489 sin6.sin6_scope_id == 0) { 490 sin6.sin6_scope_id = 491 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 492 sin6.sin6_addr.s6_addr[2] = 0; 493 sin6.sin6_addr.s6_addr[3] = 0; 494 } 495#endif 496 if (nflag) 497 niflags |= NI_NUMERICHOST; 498 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 499 line, sizeof(line), NULL, 0, niflags) != 0) 500 strncpy(line, "invalid", sizeof(line)); 501 502 return(line); 503 } 504#endif 505 506 case AF_APPLETALK: 507 (void) snprintf(line, sizeof(line), "atalk %s", 508 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 509 break; 510 511 case AF_LINK: 512 return (link_ntoa((struct sockaddr_dl *)sa)); 513 514 515 default: 516 { u_short *s = (u_short *)sa->sa_data; 517 u_short *slim = s + ((sa->sa_len + 1)>>1); 518 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 519 char *cpe = line + sizeof(line); 520 521 while (s < slim && cp < cpe) 522 if ((n = snprintf(cp, cpe - cp, " %x", *s++)) > 0) 523 cp += n; 524 else 525 *cp = '\0'; 526 break; 527 } 528 } 529 return (line); 530} 531 532void 533set_metric(value, key) 534 char *value; 535 int key; 536{ 537 int flag = 0; 538 u_long noval, *valp = &noval; 539 540 switch (key) { 541#define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 542 caseof(K_MTU, RTV_MTU, rmx_mtu); 543 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 544 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 545 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 546 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 547 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 548 caseof(K_RTT, RTV_RTT, rmx_rtt); 549 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 550 } 551 rtm_inits |= flag; 552 if (lockrest || locking) 553 rt_metrics.rmx_locks |= flag; 554 if (locking) 555 locking = 0; 556 *valp = atoi(value); 557} 558 559void 560newroute(argc, argv) 561 int argc; 562 char **argv; 563{ 564 char *cmd, *dest = "", *gateway = "", *err; 565 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC; 566 int key; 567 struct hostent *hp = 0; 568 569 if (uid) { 570 errx(EX_NOPERM, "must be root to alter routing table"); 571 } 572 cmd = argv[0]; 573 if (*cmd != 'g') 574 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 575 while (--argc > 0) { 576 if (**(++argv)== '-') { 577 switch (key = keyword(1 + *argv)) { 578 case K_LINK: 579 af = AF_LINK; 580 aflen = sizeof(struct sockaddr_dl); 581 break; 582 case K_INET: 583 af = AF_INET; 584 aflen = sizeof(struct sockaddr_in); 585 break; 586#ifdef INET6 587 case K_INET6: 588 af = AF_INET6; 589 aflen = sizeof(struct sockaddr_in6); 590 break; 591#endif 592 case K_ATALK: 593 af = AF_APPLETALK; 594 aflen = sizeof(struct sockaddr_at); 595 break; 596 case K_SA: 597 af = PF_ROUTE; 598 aflen = sizeof(union sockunion); 599 break; 600 case K_IFACE: 601 case K_INTERFACE: 602 iflag++; 603 break; 604 case K_NOSTATIC: 605 flags &= ~RTF_STATIC; 606 break; 607 case K_LLINFO: 608 flags |= RTF_LLINFO; 609 break; 610 case K_LOCK: 611 locking = 1; 612 break; 613 case K_LOCKREST: 614 lockrest = 1; 615 break; 616 case K_HOST: 617 forcehost++; 618 break; 619 case K_REJECT: 620 flags |= RTF_REJECT; 621 break; 622 case K_BLACKHOLE: 623 flags |= RTF_BLACKHOLE; 624 break; 625 case K_PROTO1: 626 flags |= RTF_PROTO1; 627 break; 628 case K_PROTO2: 629 flags |= RTF_PROTO2; 630 break; 631 case K_PROXY: 632 proxy = 1; 633 break; 634 case K_CLONING: 635 flags |= RTF_CLONING; 636 break; 637 case K_XRESOLVE: 638 flags |= RTF_XRESOLVE; 639 break; 640 case K_STATIC: 641 flags |= RTF_STATIC; 642 break; 643 case K_IFA: 644 if (!--argc) 645 usage((char *)NULL); 646 (void) getaddr(RTA_IFA, *++argv, 0); 647 break; 648 case K_IFP: 649 if (!--argc) 650 usage((char *)NULL); 651 (void) getaddr(RTA_IFP, *++argv, 0); 652 break; 653 case K_GENMASK: 654 if (!--argc) 655 usage((char *)NULL); 656 (void) getaddr(RTA_GENMASK, *++argv, 0); 657 break; 658 case K_GATEWAY: 659 if (!--argc) 660 usage((char *)NULL); 661 (void) getaddr(RTA_GATEWAY, *++argv, 0); 662 break; 663 case K_DST: 664 if (!--argc) 665 usage((char *)NULL); 666 ishost = getaddr(RTA_DST, *++argv, &hp); 667 dest = *argv; 668 break; 669 case K_NETMASK: 670 if (!--argc) 671 usage((char *)NULL); 672 (void) getaddr(RTA_NETMASK, *++argv, 0); 673 /* FALLTHROUGH */ 674 case K_NET: 675 forcenet++; 676 break; 677 case K_PREFIXLEN: 678 if (!--argc) 679 usage((char *)NULL); 680 if (prefixlen(*++argv) == -1) { 681 forcenet = 0; 682 ishost = 1; 683 } else { 684 forcenet = 1; 685 ishost = 0; 686 } 687 break; 688 case K_MTU: 689 case K_HOPCOUNT: 690 case K_EXPIRE: 691 case K_RECVPIPE: 692 case K_SENDPIPE: 693 case K_SSTHRESH: 694 case K_RTT: 695 case K_RTTVAR: 696 if (!--argc) 697 usage((char *)NULL); 698 set_metric(*++argv, key); 699 break; 700 default: 701 usage(1+*argv); 702 } 703 } else { 704 if ((rtm_addrs & RTA_DST) == 0) { 705 dest = *argv; 706 ishost = getaddr(RTA_DST, *argv, &hp); 707 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 708 gateway = *argv; 709 (void) getaddr(RTA_GATEWAY, *argv, &hp); 710 } else { 711 (void) getaddr(RTA_NETMASK, *argv, 0); 712 forcenet = 1; 713 } 714 } 715 } 716 if (forcehost) { 717 ishost = 1; 718#ifdef INET6 719 if (af == AF_INET6) { 720 rtm_addrs &= ~RTA_NETMASK; 721 memset((void *)&so_mask, 0, sizeof(so_mask)); 722 } 723#endif 724 } 725 if (forcenet) 726 ishost = 0; 727 flags |= RTF_UP; 728 if (ishost) 729 flags |= RTF_HOST; 730 if (iflag == 0) 731 flags |= RTF_GATEWAY; 732 if (proxy) { 733 so_dst.sinarp.sin_other = SIN_PROXY; 734 flags |= RTF_ANNOUNCE; 735 } 736 for (attempts = 1; ; attempts++) { 737 errno = 0; 738 if ((ret = rtmsg(*cmd, flags)) == 0) 739 break; 740 if (errno != ENETUNREACH && errno != ESRCH) 741 break; 742 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 743 hp->h_addr_list++; 744 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 745 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 746 } else 747 break; 748 } 749 if (*cmd == 'g') 750 exit(0); 751 if (!qflag) { 752 oerrno = errno; 753 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 754 if (*gateway) { 755 (void) printf(": gateway %s", gateway); 756 if (attempts > 1 && ret == 0 && af == AF_INET) 757 (void) printf(" (%s)", 758 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 759 } 760 if (ret == 0) { 761 (void) printf("\n"); 762 } else { 763 switch (oerrno) { 764 case ESRCH: 765 err = "not in table"; 766 break; 767 case EBUSY: 768 err = "entry in use"; 769 break; 770 case ENOBUFS: 771 err = "routing table overflow"; 772 break; 773 case EDQUOT: /* handle recursion avoidance in rt_setgate() */ 774 err = "gateway uses the same route"; 775 break; 776 default: 777 err = strerror(oerrno); 778 break; 779 } 780 (void) printf(": %s\n", err); 781 } 782 } 783 exit(ret != 0); 784} 785 786void 787inet_makenetandmask(net, sin, bits) 788 u_long net, bits; 789 struct sockaddr_in *sin; 790{ 791 u_long addr, mask = 0; 792 char *cp; 793 794 rtm_addrs |= RTA_NETMASK; 795 if (net == 0) 796 mask = addr = 0; 797 else if (net < 128) { 798 addr = net << IN_CLASSA_NSHIFT; 799 mask = IN_CLASSA_NET; 800 } else if (net < 65536) { 801 addr = net << IN_CLASSB_NSHIFT; 802 mask = IN_CLASSB_NET; 803 } else if (net < 16777216L) { 804 addr = net << IN_CLASSC_NSHIFT; 805 mask = IN_CLASSC_NET; 806 } else { 807 addr = net; 808 if ((addr & IN_CLASSA_HOST) == 0) 809 mask = IN_CLASSA_NET; 810 else if ((addr & IN_CLASSB_HOST) == 0) 811 mask = IN_CLASSB_NET; 812 else if ((addr & IN_CLASSC_HOST) == 0) 813 mask = IN_CLASSC_NET; 814 else 815 mask = -1; 816 } 817 if (bits) 818 mask = 0xffffffff << (32 - bits); 819 sin->sin_addr.s_addr = htonl(addr); 820 sin = &so_mask.sin; 821 sin->sin_addr.s_addr = htonl(mask); 822 sin->sin_len = 0; 823 sin->sin_family = 0; 824 cp = (char *)(&sin->sin_addr + 1); 825 while (*--cp == 0 && cp > (char *)sin) 826 ; 827 sin->sin_len = 1 + cp - (char *)sin; 828} 829 830#ifdef INET6 831/* 832 * XXX the function may need more improvement... 833 */ 834static int 835inet6_makenetandmask(sin6, plen) 836 struct sockaddr_in6 *sin6; 837 char *plen; 838{ 839 struct in6_addr in6; 840 841 if (!plen) { 842 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 843 sin6->sin6_scope_id == 0) { 844 plen = "0"; 845 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 846 /* aggregatable global unicast - RFC2374 */ 847 memset(&in6, 0, sizeof(in6)); 848 if (!memcmp(&sin6->sin6_addr.s6_addr[8], 849 &in6.s6_addr[8], 8)) 850 plen = "64"; 851 } 852 } 853 854 if (!plen || strcmp(plen, "128") == 0) 855 return 1; 856 rtm_addrs |= RTA_NETMASK; 857 (void)prefixlen(plen); 858 return 0; 859} 860#endif 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 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#if 0 949 bzero(su, sizeof(*su)); /* for readability */ 950#endif 951 (void) getaddr(RTA_NETMASK, s, 0); 952 break; 953#if 0 954 case RTA_NETMASK: 955 case RTA_GENMASK: 956 bzero(su, sizeof(*su)); /* for readability */ 957#endif 958 } 959 return (0); 960 } 961 switch (afamily) { 962#ifdef INET6 963 case AF_INET6: 964 { 965 struct addrinfo hints, *res; 966 int ecode; 967 968 q = NULL; 969 if (which == RTA_DST && (q = strchr(s, '/')) != NULL) 970 *q = '\0'; 971 memset(&hints, 0, sizeof(hints)); 972 hints.ai_family = afamily; /*AF_INET6*/ 973 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 974 ecode = getaddrinfo(s, NULL, &hints, &res); 975 if (ecode != 0 || res->ai_family != AF_INET6 || 976 res->ai_addrlen != sizeof(su->sin6)) { 977 (void) fprintf(stderr, "%s: %s\n", s, 978 gai_strerror(ecode)); 979 exit(1); 980 } 981 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 982#ifdef __KAME__ 983 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 984 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 985 su->sin6.sin6_scope_id) { 986 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 987 htons(su->sin6.sin6_scope_id); 988 su->sin6.sin6_scope_id = 0; 989 } 990#endif 991 freeaddrinfo(res); 992 if (q != NULL) 993 *q++ = '/'; 994 if (which == RTA_DST) 995 return (inet6_makenetandmask(&su->sin6, q)); 996 return (0); 997 } 998#endif /* INET6 */ 999 1000 case AF_APPLETALK: 1001 if (!atalk_aton(s, &su->sat.sat_addr)) 1002 errx(EX_NOHOST, "bad address: %s", s); 1003 rtm_addrs |= RTA_NETMASK; 1004 return(forcehost || su->sat.sat_addr.s_node != 0); 1005 1006 case AF_LINK: 1007 link_addr(s, &su->sdl); 1008 return (1); 1009 1010 1011 case PF_ROUTE: 1012 su->sa.sa_len = sizeof(*su); 1013 sockaddr(s, &su->sa); 1014 return (1); 1015 1016 case AF_INET: 1017 default: 1018 break; 1019 } 1020 1021 if (hpp == NULL) 1022 hpp = &hp; 1023 *hpp = NULL; 1024 1025 q = strchr(s,'/'); 1026 if (q && which == RTA_DST) { 1027 *q = '\0'; 1028 if ((val = inet_network(s)) != INADDR_NONE) { 1029 inet_makenetandmask( 1030 val, &su->sin, strtoul(q+1, 0, 0)); 1031 return (0); 1032 } 1033 *q = '/'; 1034 } 1035 if ((which != RTA_DST || forcenet == 0) && 1036 inet_aton(s, &su->sin.sin_addr)) { 1037 val = su->sin.sin_addr.s_addr; 1038 if (which != RTA_DST || forcehost || 1039 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1040 return (1); 1041 else { 1042 val = ntohl(val); 1043 goto netdone; 1044 } 1045 } 1046 if (which == RTA_DST && forcehost == 0 && 1047 ((val = inet_network(s)) != INADDR_NONE || 1048 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) { 1049netdone: 1050 inet_makenetandmask(val, &su->sin, 0); 1051 return (0); 1052 } 1053 hp = gethostbyname(s); 1054 if (hp) { 1055 *hpp = hp; 1056 su->sin.sin_family = hp->h_addrtype; 1057 memmove((char *)&su->sin.sin_addr, hp->h_addr, 1058 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1059 return (1); 1060 } 1061 errx(EX_NOHOST, "bad address: %s", s); 1062} 1063 1064int 1065prefixlen(s) 1066 char *s; 1067{ 1068 int len = atoi(s), q, r; 1069 int max; 1070 char *p; 1071 1072 rtm_addrs |= RTA_NETMASK; 1073 switch (af) { 1074#ifdef INET6 1075 case AF_INET6: 1076 max = 128; 1077 p = (char *)&so_mask.sin6.sin6_addr; 1078 break; 1079#endif 1080 case AF_INET: 1081 max = 32; 1082 p = (char *)&so_mask.sin.sin_addr; 1083 break; 1084 default: 1085 (void) fprintf(stderr, "prefixlen not supported in this af\n"); 1086 exit(1); 1087 /*NOTREACHED*/ 1088 } 1089 1090 if (len < 0 || max < len) { 1091 (void) fprintf(stderr, "%s: bad value\n", s); 1092 exit(1); 1093 } 1094 1095 q = len >> 3; 1096 r = len & 7; 1097 so_mask.sa.sa_family = af; 1098 so_mask.sa.sa_len = aflen; 1099 memset((void *)p, 0, max / 8); 1100 if (q > 0) 1101 memset((void *)p, 0xff, q); 1102 if (r > 0) 1103 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1104 if (len == max) 1105 return -1; 1106 else 1107 return len; 1108} 1109 1110void 1111interfaces() 1112{ 1113 size_t needed; 1114 int mib[6]; 1115 char *buf, *lim, *next, count = 0; 1116 struct rt_msghdr *rtm; 1117 1118retry2: 1119 mib[0] = CTL_NET; 1120 mib[1] = PF_ROUTE; 1121 mib[2] = 0; /* protocol */ 1122 mib[3] = 0; /* wildcard address family */ 1123 mib[4] = NET_RT_IFLIST; 1124 mib[5] = 0; /* no flags */ 1125 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1126 err(EX_OSERR, "route-sysctl-estimate"); 1127 if ((buf = malloc(needed)) == NULL) 1128 errx(EX_OSERR, "malloc failed"); 1129 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 1130 if (errno == ENOMEM && count++ < 10) { 1131 warnx("Routing table grew, retrying"); 1132 sleep(1); 1133 free(buf); 1134 goto retry2; 1135 } 1136 err(EX_OSERR, "actual retrieval of interface table"); 1137 } 1138 lim = buf + needed; 1139 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1140 rtm = (struct rt_msghdr *)next; 1141 print_rtmsg(rtm, rtm->rtm_msglen); 1142 } 1143} 1144 1145void 1146monitor() 1147{ 1148 int n; 1149 char msg[2048]; 1150 1151 verbose = 1; 1152 if (debugonly) { 1153 interfaces(); 1154 exit(0); 1155 } 1156 for(;;) { 1157 time_t now; 1158 n = read(s, msg, 2048); 1159 now = time(NULL); 1160 (void) printf("\ngot message of size %d on %s", n, ctime(&now)); 1161 print_rtmsg((struct rt_msghdr *)msg, n); 1162 } 1163} 1164 1165struct { 1166 struct rt_msghdr m_rtm; 1167 char m_space[512]; 1168} m_rtmsg; 1169 1170int 1171rtmsg(cmd, flags) 1172 int cmd, flags; 1173{ 1174 static int seq; 1175 int rlen; 1176 char *cp = m_rtmsg.m_space; 1177 int l; 1178 1179#define NEXTADDR(w, u) \ 1180 if (rtm_addrs & (w)) {\ 1181 l = SA_SIZE(&(u.sa)); memmove(cp, &(u), l); cp += l;\ 1182 if (verbose) sodump(&(u),"u");\ 1183 } 1184 1185 errno = 0; 1186 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1187 if (cmd == 'a') 1188 cmd = RTM_ADD; 1189 else if (cmd == 'c') 1190 cmd = RTM_CHANGE; 1191 else if (cmd == 'g') { 1192 cmd = RTM_GET; 1193 if (so_ifp.sa.sa_family == 0) { 1194 so_ifp.sa.sa_family = AF_LINK; 1195 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1196 rtm_addrs |= RTA_IFP; 1197 } 1198 } else 1199 cmd = RTM_DELETE; 1200#define rtm m_rtmsg.m_rtm 1201 rtm.rtm_type = cmd; 1202 rtm.rtm_flags = flags; 1203 rtm.rtm_version = RTM_VERSION; 1204 rtm.rtm_seq = ++seq; 1205 rtm.rtm_addrs = rtm_addrs; 1206 rtm.rtm_rmx = rt_metrics; 1207 rtm.rtm_inits = rtm_inits; 1208 1209 if (rtm_addrs & RTA_NETMASK) 1210 mask_addr(); 1211 NEXTADDR(RTA_DST, so_dst); 1212 NEXTADDR(RTA_GATEWAY, so_gate); 1213 NEXTADDR(RTA_NETMASK, so_mask); 1214 NEXTADDR(RTA_GENMASK, so_genmask); 1215 NEXTADDR(RTA_IFP, so_ifp); 1216 NEXTADDR(RTA_IFA, so_ifa); 1217 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1218 if (verbose) 1219 print_rtmsg(&rtm, l); 1220 if (debugonly) 1221 return (0); 1222 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1223 if (errno == EPERM) 1224 err(1, "writing to routing socket"); 1225 warn("writing to routing socket"); 1226 return (-1); 1227 } 1228 if (cmd == RTM_GET) { 1229 do { 1230 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1231 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1232 if (l < 0) 1233 warn("read from routing socket"); 1234 else 1235 print_getmsg(&rtm, l); 1236 } 1237#undef rtm 1238 return (0); 1239} 1240 1241void 1242mask_addr() 1243{ 1244 int olen = so_mask.sa.sa_len; 1245 char *cp1 = olen + (char *)&so_mask, *cp2; 1246 1247 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1248 if (*--cp1 != 0) { 1249 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1250 break; 1251 } 1252 if ((rtm_addrs & RTA_DST) == 0) 1253 return; 1254 switch (so_dst.sa.sa_family) { 1255 case AF_INET: 1256#ifdef INET6 1257 case AF_INET6: 1258#endif 1259 case AF_APPLETALK: 1260 case 0: 1261 return; 1262 } 1263 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1264 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1265 while (cp2 > cp1) 1266 *--cp2 = 0; 1267 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1268 while (cp1 > so_dst.sa.sa_data) 1269 *--cp1 &= *--cp2; 1270} 1271 1272char *msgtypes[] = { 1273 "", 1274 "RTM_ADD: Add Route", 1275 "RTM_DELETE: Delete Route", 1276 "RTM_CHANGE: Change Metrics or flags", 1277 "RTM_GET: Report Metrics", 1278 "RTM_LOSING: Kernel Suspects Partitioning", 1279 "RTM_REDIRECT: Told to use different route", 1280 "RTM_MISS: Lookup failed on this address", 1281 "RTM_LOCK: fix specified metrics", 1282 "RTM_OLDADD: caused by SIOCADDRT", 1283 "RTM_OLDDEL: caused by SIOCDELRT", 1284 "RTM_RESOLVE: Route created by cloning", 1285 "RTM_NEWADDR: address being added to iface", 1286 "RTM_DELADDR: address being removed from iface", 1287 "RTM_IFINFO: iface status change", 1288 "RTM_NEWMADDR: new multicast group membership on iface", 1289 "RTM_DELMADDR: multicast group membership removed from iface", 1290 "RTM_IFANNOUNCE: interface arrival/departure", 1291 0, 1292}; 1293 1294char metricnames[] = 1295"\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1296"\1mtu"; 1297char routeflags[] = 1298"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1299"\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1300"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1301"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1302char ifnetflags[] = 1303"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1304"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1305"\017LINK2\020MULTICAST"; 1306char addrnames[] = 1307"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1308 1309void 1310print_rtmsg(rtm, msglen) 1311 struct rt_msghdr *rtm; 1312 int msglen; 1313{ 1314 struct if_msghdr *ifm; 1315 struct ifa_msghdr *ifam; 1316#ifdef RTM_NEWMADDR 1317 struct ifma_msghdr *ifmam; 1318#endif 1319 struct if_announcemsghdr *ifan; 1320 char *state; 1321 1322 if (verbose == 0) 1323 return; 1324 if (rtm->rtm_version != RTM_VERSION) { 1325 (void) printf("routing message version %d not understood\n", 1326 rtm->rtm_version); 1327 return; 1328 } 1329 if (msgtypes[rtm->rtm_type] != NULL) 1330 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1331 else 1332 (void)printf("#%d: ", rtm->rtm_type); 1333 (void)printf("len %d, ", rtm->rtm_msglen); 1334 switch (rtm->rtm_type) { 1335 case RTM_IFINFO: 1336 ifm = (struct if_msghdr *)rtm; 1337 (void) printf("if# %d, ", ifm->ifm_index); 1338 switch (ifm->ifm_data.ifi_link_state) { 1339 case LINK_STATE_DOWN: 1340 state = "down"; 1341 break; 1342 case LINK_STATE_UP: 1343 state = "up"; 1344 break; 1345 default: 1346 state = "unknown"; 1347 break; 1348 } 1349 (void) printf("link: %s, flags:", state); 1350 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1351 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1352 break; 1353 case RTM_NEWADDR: 1354 case RTM_DELADDR: 1355 ifam = (struct ifa_msghdr *)rtm; 1356 (void) printf("metric %d, flags:", ifam->ifam_metric); 1357 bprintf(stdout, ifam->ifam_flags, routeflags); 1358 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1359 break; 1360#ifdef RTM_NEWMADDR 1361 case RTM_NEWMADDR: 1362 case RTM_DELMADDR: 1363 ifmam = (struct ifma_msghdr *)rtm; 1364 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1365 break; 1366#endif 1367 case RTM_IFANNOUNCE: 1368 ifan = (struct if_announcemsghdr *)rtm; 1369 (void) printf("if# %d, what: ", ifan->ifan_index); 1370 switch (ifan->ifan_what) { 1371 case IFAN_ARRIVAL: 1372 printf("arrival"); 1373 break; 1374 case IFAN_DEPARTURE: 1375 printf("departure"); 1376 break; 1377 default: 1378 printf("#%d", ifan->ifan_what); 1379 break; 1380 } 1381 printf("\n"); 1382 break; 1383 1384 default: 1385 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1386 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1387 bprintf(stdout, rtm->rtm_flags, routeflags); 1388 pmsg_common(rtm); 1389 } 1390} 1391 1392void 1393print_getmsg(rtm, msglen) 1394 struct rt_msghdr *rtm; 1395 int msglen; 1396{ 1397 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1398 struct sockaddr_dl *ifp = NULL; 1399 struct sockaddr *sa; 1400 char *cp; 1401 int i; 1402 1403 (void) printf(" route to: %s\n", routename(&so_dst)); 1404 if (rtm->rtm_version != RTM_VERSION) { 1405 warnx("routing message version %d not understood", 1406 rtm->rtm_version); 1407 return; 1408 } 1409 if (rtm->rtm_msglen > msglen) { 1410 warnx("message length mismatch, in packet %d, returned %d", 1411 rtm->rtm_msglen, msglen); 1412 } 1413 if (rtm->rtm_errno) { 1414 errno = rtm->rtm_errno; 1415 warn("message indicates error %d", errno); 1416 return; 1417 } 1418 cp = ((char *)(rtm + 1)); 1419 if (rtm->rtm_addrs) 1420 for (i = 1; i; i <<= 1) 1421 if (i & rtm->rtm_addrs) { 1422 sa = (struct sockaddr *)cp; 1423 switch (i) { 1424 case RTA_DST: 1425 dst = sa; 1426 break; 1427 case RTA_GATEWAY: 1428 gate = sa; 1429 break; 1430 case RTA_NETMASK: 1431 mask = sa; 1432 break; 1433 case RTA_IFP: 1434 if (sa->sa_family == AF_LINK && 1435 ((struct sockaddr_dl *)sa)->sdl_nlen) 1436 ifp = (struct sockaddr_dl *)sa; 1437 break; 1438 } 1439 cp += SA_SIZE(sa); 1440 } 1441 if (dst && mask) 1442 mask->sa_family = dst->sa_family; /* XXX */ 1443 if (dst) 1444 (void)printf("destination: %s\n", routename(dst)); 1445 if (mask) { 1446 int savenflag = nflag; 1447 1448 nflag = 1; 1449 (void)printf(" mask: %s\n", routename(mask)); 1450 nflag = savenflag; 1451 } 1452 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1453 (void)printf(" gateway: %s\n", routename(gate)); 1454 if (ifp) 1455 (void)printf(" interface: %.*s\n", 1456 ifp->sdl_nlen, ifp->sdl_data); 1457 (void)printf(" flags: "); 1458 bprintf(stdout, rtm->rtm_flags, routeflags); 1459 1460#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1461#define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1462 1463 (void) printf("\n%s\n", "\ 1464 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1465 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1466 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1467 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1468 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1469 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1470 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1471 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1472 if (rtm->rtm_rmx.rmx_expire) 1473 rtm->rtm_rmx.rmx_expire -= time(0); 1474 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1475#undef lock 1476#undef msec 1477#define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1478 if (verbose) 1479 pmsg_common(rtm); 1480 else if (rtm->rtm_addrs &~ RTA_IGN) { 1481 (void) printf("sockaddrs: "); 1482 bprintf(stdout, rtm->rtm_addrs, addrnames); 1483 putchar('\n'); 1484 } 1485#undef RTA_IGN 1486} 1487 1488void 1489pmsg_common(rtm) 1490 struct rt_msghdr *rtm; 1491{ 1492 (void) printf("\nlocks: "); 1493 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1494 (void) printf(" inits: "); 1495 bprintf(stdout, rtm->rtm_inits, metricnames); 1496 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1497} 1498 1499void 1500pmsg_addrs(cp, addrs) 1501 char *cp; 1502 int addrs; 1503{ 1504 struct sockaddr *sa; 1505 int i; 1506 1507 if (addrs == 0) { 1508 (void) putchar('\n'); 1509 return; 1510 } 1511 (void) printf("\nsockaddrs: "); 1512 bprintf(stdout, addrs, addrnames); 1513 (void) putchar('\n'); 1514 for (i = 1; i; i <<= 1) 1515 if (i & addrs) { 1516 sa = (struct sockaddr *)cp; 1517 (void) printf(" %s", routename(sa)); 1518 cp += SA_SIZE(sa); 1519 } 1520 (void) putchar('\n'); 1521 (void) fflush(stdout); 1522} 1523 1524void 1525bprintf(fp, b, s) 1526 FILE *fp; 1527 int b; 1528 u_char *s; 1529{ 1530 int i; 1531 int gotsome = 0; 1532 1533 if (b == 0) 1534 return; 1535 while ((i = *s++) != 0) { 1536 if (b & (1 << (i-1))) { 1537 if (gotsome == 0) 1538 i = '<'; 1539 else 1540 i = ','; 1541 (void) putc(i, fp); 1542 gotsome = 1; 1543 for (; (i = *s) > 32; s++) 1544 (void) putc(i, fp); 1545 } else 1546 while (*s > 32) 1547 s++; 1548 } 1549 if (gotsome) 1550 (void) putc('>', fp); 1551} 1552 1553int 1554keyword(cp) 1555 char *cp; 1556{ 1557 struct keytab *kt = keywords; 1558 1559 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1560 kt++; 1561 return kt->kt_i; 1562} 1563 1564void 1565sodump(su, which) 1566 sup su; 1567 char *which; 1568{ 1569 switch (su->sa.sa_family) { 1570 case AF_LINK: 1571 (void) printf("%s: link %s; ", 1572 which, link_ntoa(&su->sdl)); 1573 break; 1574 case AF_INET: 1575 (void) printf("%s: inet %s; ", 1576 which, inet_ntoa(su->sin.sin_addr)); 1577 break; 1578 case AF_APPLETALK: 1579 (void) printf("%s: atalk %s; ", 1580 which, atalk_ntoa(su->sat.sat_addr)); 1581 break; 1582 } 1583 (void) fflush(stdout); 1584} 1585 1586/* States*/ 1587#define VIRGIN 0 1588#define GOTONE 1 1589#define GOTTWO 2 1590/* Inputs */ 1591#define DIGIT (4*0) 1592#define END (4*1) 1593#define DELIM (4*2) 1594 1595void 1596sockaddr(addr, sa) 1597 char *addr; 1598 struct sockaddr *sa; 1599{ 1600 char *cp = (char *)sa; 1601 int size = sa->sa_len; 1602 char *cplim = cp + size; 1603 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1604 1605 memset(cp, 0, size); 1606 cp++; 1607 do { 1608 if ((*addr >= '0') && (*addr <= '9')) { 1609 new = *addr - '0'; 1610 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1611 new = *addr - 'a' + 10; 1612 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1613 new = *addr - 'A' + 10; 1614 } else if (*addr == 0) 1615 state |= END; 1616 else 1617 state |= DELIM; 1618 addr++; 1619 switch (state /* | INPUT */) { 1620 case GOTTWO | DIGIT: 1621 *cp++ = byte; /*FALLTHROUGH*/ 1622 case VIRGIN | DIGIT: 1623 state = GOTONE; byte = new; continue; 1624 case GOTONE | DIGIT: 1625 state = GOTTWO; byte = new + (byte << 4); continue; 1626 default: /* | DELIM */ 1627 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1628 case GOTONE | END: 1629 case GOTTWO | END: 1630 *cp++ = byte; /* FALLTHROUGH */ 1631 case VIRGIN | END: 1632 break; 1633 } 1634 break; 1635 } while (cp < cplim); 1636 sa->sa_len = cp - (char *)sa; 1637} 1638 1639int 1640atalk_aton(const char *text, struct at_addr *addr) 1641{ 1642 u_int net, node; 1643 1644 if (sscanf(text, "%u.%u", &net, &node) != 2 1645 || net > 0xffff || node > 0xff) 1646 return(0); 1647 addr->s_net = htons(net); 1648 addr->s_node = node; 1649 return(1); 1650} 1651 1652char * 1653atalk_ntoa(struct at_addr at) 1654{ 1655 static char buf[20]; 1656 1657 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1658 return(buf); 1659} 1660