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 35 static 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 42 static char sccsid[] = "@(#)route.c 8.6 (Berkeley) 4/28/95"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 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 78 struct keytab { 79 char *kt_cp; 80 int kt_i; 81 } keywords[] = { 82 #include "keywords.h" 83 {0, 0} 84 }; 85 86 struct ortentry route; 87 union 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; 101 102 typedef union sockunion *sup; 103 int pid, rtm_addrs; 104 int s; 105 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 106 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 107 int locking, lockrest, debugonly; 108 struct rt_metrics rt_metrics; 109 u_long rtm_inits; 110 uid_t uid; 111 int atalk_aton(const char *, struct at_addr *); 112 char *atalk_ntoa(struct at_addr); 113 const char *routename(), *netname(); 114 void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 115 void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 116 #ifdef INET6 117 static int inet6_makenetandmask(struct sockaddr_in6 *, char *); 118 #endif 119 int getaddr(), rtmsg(), x25_makemask(); 120 int prefixlen(); 121 extern char *iso_ntoa(); 122 123 void usage(const char *) __dead2; 124 125 void 126 usage(cp) 127 const char *cp; 128 { 129 if (cp) 130 warnx("bad keyword: %s", cp); 131 (void) fprintf(stderr, 132 "usage: route [-dnqtv] command [[modifiers] args]\n"); 133 exit(EX_USAGE); 134 /* NOTREACHED */ 135 } 136 137 #define ROUNDUP(a) \ 138 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 139 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 140 141 int 142 main(argc, argv) 143 int argc; 144 char **argv; 145 { 146 int ch; 147 148 if (argc < 2) 149 usage((char *)NULL); 150 151 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 152 switch(ch) { 153 case 'n': 154 nflag = 1; 155 break; 156 case 'q': 157 qflag = 1; 158 break; 159 case 'v': 160 verbose = 1; 161 break; 162 case 't': 163 tflag = 1; 164 break; 165 case 'd': 166 debugonly = 1; 167 break; 168 case '?': 169 default: 170 usage((char *)NULL); 171 } 172 argc -= optind; 173 argv += optind; 174 175 pid = getpid(); 176 uid = getuid(); 177 if (tflag) 178 s = open(_PATH_DEVNULL, O_WRONLY, 0); 179 else 180 s = socket(PF_ROUTE, SOCK_RAW, 0); 181 if (s < 0) 182 err(EX_OSERR, "socket"); 183 if (*argv) 184 switch (keyword(*argv)) { 185 case K_GET: 186 uid = 0; 187 /* FALLTHROUGH */ 188 189 case K_CHANGE: 190 case K_ADD: 191 case K_DELETE: 192 newroute(argc, argv); 193 /* NOTREACHED */ 194 195 case K_MONITOR: 196 monitor(); 197 /* NOTREACHED */ 198 199 case K_FLUSH: 200 flushroutes(argc, argv); 201 exit(0); 202 /* NOTREACHED */ 203 } 204 usage(*argv); 205 /* NOTREACHED */ 206 } 207 208 /* 209 * Purge all entries in the routing tables not 210 * associated with network interfaces. 211 */ 212 void 213 flushroutes(argc, argv) 214 int argc; 215 char *argv[]; 216 { 217 size_t needed; 218 int mib[6], rlen, seqno; 219 char *buf, *next, *lim; 220 struct rt_msghdr *rtm; 221 222 if (uid) { 223 errx(EX_NOPERM, "must be root to alter routing table"); 224 } 225 shutdown(s, 0); /* Don't want to read back our messages */ 226 if (argc > 1) { 227 argv++; 228 if (argc == 2 && **argv == '-') 229 switch (keyword(*argv + 1)) { 230 case K_INET: 231 af = AF_INET; 232 break; 233 #ifdef INET6 234 case K_INET6: 235 af = AF_INET6; 236 break; 237 #endif 238 case K_ATALK: 239 af = AF_APPLETALK; 240 break; 241 #ifdef NS 242 case K_XNS: 243 af = AF_NS; 244 break; 245 #endif 246 case K_LINK: 247 af = AF_LINK; 248 break; 249 default: 250 goto bad; 251 } else 252 bad: usage(*argv); 253 } 254 mib[0] = CTL_NET; 255 mib[1] = PF_ROUTE; 256 mib[2] = 0; /* protocol */ 257 mib[3] = 0; /* wildcard address family */ 258 mib[4] = NET_RT_DUMP; 259 mib[5] = 0; /* no flags */ 260 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 261 err(EX_OSERR, "route-sysctl-estimate"); 262 if ((buf = malloc(needed)) == NULL) 263 errx(EX_OSERR, "malloc failed"); 264 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 265 err(EX_OSERR, "route-sysctl-get"); 266 lim = buf + needed; 267 if (verbose) 268 (void) printf("Examining routing table from sysctl\n"); 269 seqno = 0; /* ??? */ 270 for (next = buf; next < lim; next += rtm->rtm_msglen) { 271 rtm = (struct rt_msghdr *)next; 272 if (verbose) 273 print_rtmsg(rtm, rtm->rtm_msglen); 274 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 275 continue; 276 if (af) { 277 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 278 279 if (sa->sa_family != af) 280 continue; 281 } 282 if (debugonly) 283 continue; 284 rtm->rtm_type = RTM_DELETE; 285 rtm->rtm_seq = seqno; 286 rlen = write(s, next, rtm->rtm_msglen); 287 if (rlen < (int)rtm->rtm_msglen) { 288 warn("write to routing socket"); 289 (void) printf("got only %d for rlen\n", rlen); 290 break; 291 } 292 seqno++; 293 if (qflag) 294 continue; 295 if (verbose) 296 print_rtmsg(rtm, rlen); 297 else { 298 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 299 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 300 routename(sa) : netname(sa)); 301 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 302 (void) printf("%-20.20s ", routename(sa)); 303 (void) printf("done\n"); 304 } 305 } 306 } 307 308 const char * 309 routename(sa) 310 struct sockaddr *sa; 311 { 312 char *cp; 313 static char line[MAXHOSTNAMELEN + 1]; 314 struct hostent *hp; 315 static char domain[MAXHOSTNAMELEN + 1]; 316 static int first = 1, n; 317 #ifdef NS 318 char *ns_print(); 319 #endif 320 321 if (first) { 322 first = 0; 323 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 324 (cp = strchr(domain, '.'))) { 325 domain[MAXHOSTNAMELEN] = '\0'; 326 (void) strcpy(domain, cp + 1); 327 } else 328 domain[0] = 0; 329 } 330 331 if (sa->sa_len == 0) 332 strcpy(line, "default"); 333 else switch (sa->sa_family) { 334 335 case AF_INET: 336 { struct in_addr in; 337 in = ((struct sockaddr_in *)sa)->sin_addr; 338 339 cp = 0; 340 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 341 cp = "default"; 342 if (cp == 0 && !nflag) { 343 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 344 AF_INET); 345 if (hp) { 346 if ((cp = strchr(hp->h_name, '.')) && 347 !strcmp(cp + 1, domain)) 348 *cp = 0; 349 cp = hp->h_name; 350 } 351 } 352 if (cp) { 353 strncpy(line, cp, sizeof(line) - 1); 354 line[sizeof(line) - 1] = '\0'; 355 } else 356 (void) sprintf(line, "%s", inet_ntoa(in)); 357 break; 358 } 359 360 #ifdef INET6 361 case AF_INET6: 362 { 363 struct sockaddr_in6 sin6; /* use static var for safety */ 364 int niflags = 0; 365 #ifdef NI_WITHSCOPEID 366 niflags = NI_WITHSCOPEID; 367 #endif 368 369 memset(&sin6, 0, sizeof(sin6)); 370 memcpy(&sin6, sa, sa->sa_len); 371 sin6.sin6_len = sizeof(struct sockaddr_in6); 372 sin6.sin6_family = AF_INET6; 373 #ifdef __KAME__ 374 if (sa->sa_len == sizeof(struct sockaddr_in6) && 375 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 376 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 377 sin6.sin6_scope_id == 0) { 378 sin6.sin6_scope_id = 379 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 380 sin6.sin6_addr.s6_addr[2] = 0; 381 sin6.sin6_addr.s6_addr[3] = 0; 382 } 383 #endif 384 if (nflag) 385 niflags |= NI_NUMERICHOST; 386 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 387 line, sizeof(line), NULL, 0, niflags) != 0) 388 strncpy(line, "invalid", sizeof(line)); 389 390 return(line); 391 } 392 #endif 393 394 case AF_APPLETALK: 395 (void) snprintf(line, sizeof(line), "atalk %s", 396 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 397 break; 398 399 #ifdef NS 400 case AF_NS: 401 return (ns_print((struct sockaddr_ns *)sa)); 402 #endif 403 404 case AF_LINK: 405 return (link_ntoa((struct sockaddr_dl *)sa)); 406 407 default: 408 { u_short *s = (u_short *)sa; 409 u_short *slim = s + ((sa->sa_len + 1) >> 1); 410 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 411 char *cpe = line + sizeof(line); 412 413 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 414 if ((n = snprintf(cp, cpe - cp, " %x", *s)) > 0) 415 cp += n; 416 else 417 *cp = '\0'; 418 break; 419 } 420 } 421 return (line); 422 } 423 424 /* 425 * Return the name of the network whose address is given. 426 * The address is assumed to be that of a net or subnet, not a host. 427 */ 428 const char * 429 netname(sa) 430 struct sockaddr *sa; 431 { 432 char *cp = 0; 433 static char line[MAXHOSTNAMELEN + 1]; 434 struct netent *np = 0; 435 u_long net, mask; 436 u_long i; 437 int n, subnetshift; 438 #ifdef NS 439 char *ns_print(); 440 #endif 441 442 switch (sa->sa_family) { 443 444 case AF_INET: 445 { struct in_addr in; 446 in = ((struct sockaddr_in *)sa)->sin_addr; 447 448 i = in.s_addr = ntohl(in.s_addr); 449 if (in.s_addr == 0) 450 cp = "default"; 451 else if (!nflag) { 452 if (IN_CLASSA(i)) { 453 mask = IN_CLASSA_NET; 454 subnetshift = 8; 455 } else if (IN_CLASSB(i)) { 456 mask = IN_CLASSB_NET; 457 subnetshift = 8; 458 } else { 459 mask = IN_CLASSC_NET; 460 subnetshift = 4; 461 } 462 /* 463 * If there are more bits than the standard mask 464 * would suggest, subnets must be in use. 465 * Guess at the subnet mask, assuming reasonable 466 * width subnet fields. 467 */ 468 while (in.s_addr &~ mask) 469 mask = (long)mask >> subnetshift; 470 net = in.s_addr & mask; 471 while ((mask & 1) == 0) 472 mask >>= 1, net >>= 1; 473 np = getnetbyaddr(net, AF_INET); 474 if (np) 475 cp = np->n_name; 476 } 477 #define C(x) (unsigned)((x) & 0xff) 478 if (cp) 479 strncpy(line, cp, sizeof(line)); 480 else if ((in.s_addr & 0xffffff) == 0) 481 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 482 else if ((in.s_addr & 0xffff) == 0) 483 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 484 C(in.s_addr >> 16)); 485 else if ((in.s_addr & 0xff) == 0) 486 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 487 C(in.s_addr >> 16), C(in.s_addr >> 8)); 488 else 489 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 490 C(in.s_addr >> 16), C(in.s_addr >> 8), 491 C(in.s_addr)); 492 #undef C 493 break; 494 } 495 496 #ifdef INET6 497 case AF_INET6: 498 { 499 struct sockaddr_in6 sin6; /* use static var for safety */ 500 int niflags = 0; 501 #ifdef NI_WITHSCOPEID 502 niflags = NI_WITHSCOPEID; 503 #endif 504 505 memset(&sin6, 0, sizeof(sin6)); 506 memcpy(&sin6, sa, sa->sa_len); 507 sin6.sin6_len = sizeof(struct sockaddr_in6); 508 sin6.sin6_family = AF_INET6; 509 #ifdef __KAME__ 510 if (sa->sa_len == sizeof(struct sockaddr_in6) && 511 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 512 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 513 sin6.sin6_scope_id == 0) { 514 sin6.sin6_scope_id = 515 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 516 sin6.sin6_addr.s6_addr[2] = 0; 517 sin6.sin6_addr.s6_addr[3] = 0; 518 } 519 #endif 520 if (nflag) 521 niflags |= NI_NUMERICHOST; 522 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 523 line, sizeof(line), NULL, 0, niflags) != 0) 524 strncpy(line, "invalid", sizeof(line)); 525 526 return(line); 527 } 528 #endif 529 530 case AF_APPLETALK: 531 (void) snprintf(line, sizeof(line), "atalk %s", 532 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 533 break; 534 535 #ifdef NS 536 case AF_NS: 537 return (ns_print((struct sockaddr_ns *)sa)); 538 break; 539 #endif 540 541 case AF_LINK: 542 return (link_ntoa((struct sockaddr_dl *)sa)); 543 544 545 default: 546 { u_short *s = (u_short *)sa->sa_data; 547 u_short *slim = s + ((sa->sa_len + 1)>>1); 548 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 549 char *cpe = line + sizeof(line); 550 551 while (s < slim && cp < cpe) 552 if ((n = snprintf(cp, cpe - cp, " %x", *s++)) > 0) 553 cp += n; 554 else 555 *cp = '\0'; 556 break; 557 } 558 } 559 return (line); 560 } 561 562 void 563 set_metric(value, key) 564 char *value; 565 int key; 566 { 567 int flag = 0; 568 u_long noval, *valp = &noval; 569 570 switch (key) { 571 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 572 caseof(K_MTU, RTV_MTU, rmx_mtu); 573 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 574 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 575 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 576 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 577 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 578 caseof(K_RTT, RTV_RTT, rmx_rtt); 579 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 580 } 581 rtm_inits |= flag; 582 if (lockrest || locking) 583 rt_metrics.rmx_locks |= flag; 584 if (locking) 585 locking = 0; 586 *valp = atoi(value); 587 } 588 589 void 590 newroute(argc, argv) 591 int argc; 592 char **argv; 593 { 594 char *cmd, *dest = "", *gateway = "", *err; 595 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC; 596 int key; 597 struct hostent *hp = 0; 598 599 if (uid) { 600 errx(EX_NOPERM, "must be root to alter routing table"); 601 } 602 cmd = argv[0]; 603 if (*cmd != 'g') 604 shutdown(s, 0); /* Don't want to read back our messages */ 605 while (--argc > 0) { 606 if (**(++argv)== '-') { 607 switch (key = keyword(1 + *argv)) { 608 case K_LINK: 609 af = AF_LINK; 610 aflen = sizeof(struct sockaddr_dl); 611 break; 612 case K_INET: 613 af = AF_INET; 614 aflen = sizeof(struct sockaddr_in); 615 break; 616 #ifdef INET6 617 case K_INET6: 618 af = AF_INET6; 619 aflen = sizeof(struct sockaddr_in6); 620 break; 621 #endif 622 case K_ATALK: 623 af = AF_APPLETALK; 624 aflen = sizeof(struct sockaddr_at); 625 break; 626 case K_SA: 627 af = PF_ROUTE; 628 aflen = sizeof(union sockunion); 629 break; 630 #ifdef NS 631 case K_XNS: 632 af = AF_NS; 633 aflen = sizeof(struct sockaddr_ns); 634 break; 635 #endif 636 case K_IFACE: 637 case K_INTERFACE: 638 iflag++; 639 break; 640 case K_NOSTATIC: 641 flags &= ~RTF_STATIC; 642 break; 643 case K_LLINFO: 644 flags |= RTF_LLINFO; 645 break; 646 case K_LOCK: 647 locking = 1; 648 break; 649 case K_LOCKREST: 650 lockrest = 1; 651 break; 652 case K_HOST: 653 forcehost++; 654 break; 655 case K_REJECT: 656 flags |= RTF_REJECT; 657 break; 658 case K_BLACKHOLE: 659 flags |= RTF_BLACKHOLE; 660 break; 661 case K_PROTO1: 662 flags |= RTF_PROTO1; 663 break; 664 case K_PROTO2: 665 flags |= RTF_PROTO2; 666 break; 667 case K_PROXY: 668 proxy = 1; 669 break; 670 case K_CLONING: 671 flags |= RTF_CLONING; 672 break; 673 case K_XRESOLVE: 674 flags |= RTF_XRESOLVE; 675 break; 676 case K_STATIC: 677 flags |= RTF_STATIC; 678 break; 679 case K_IFA: 680 if (!--argc) 681 usage((char *)NULL); 682 (void) getaddr(RTA_IFA, *++argv, 0); 683 break; 684 case K_IFP: 685 if (!--argc) 686 usage((char *)NULL); 687 (void) getaddr(RTA_IFP, *++argv, 0); 688 break; 689 case K_GENMASK: 690 if (!--argc) 691 usage((char *)NULL); 692 (void) getaddr(RTA_GENMASK, *++argv, 0); 693 break; 694 case K_GATEWAY: 695 if (!--argc) 696 usage((char *)NULL); 697 (void) getaddr(RTA_GATEWAY, *++argv, 0); 698 break; 699 case K_DST: 700 if (!--argc) 701 usage((char *)NULL); 702 ishost = getaddr(RTA_DST, *++argv, &hp); 703 dest = *argv; 704 break; 705 case K_NETMASK: 706 if (!--argc) 707 usage((char *)NULL); 708 (void) getaddr(RTA_NETMASK, *++argv, 0); 709 /* FALLTHROUGH */ 710 case K_NET: 711 forcenet++; 712 break; 713 case K_PREFIXLEN: 714 if (!--argc) 715 usage((char *)NULL); 716 if (prefixlen(*++argv) == -1) { 717 forcenet = 0; 718 ishost = 1; 719 } else { 720 forcenet = 1; 721 ishost = 0; 722 } 723 break; 724 case K_MTU: 725 case K_HOPCOUNT: 726 case K_EXPIRE: 727 case K_RECVPIPE: 728 case K_SENDPIPE: 729 case K_SSTHRESH: 730 case K_RTT: 731 case K_RTTVAR: 732 if (!--argc) 733 usage((char *)NULL); 734 set_metric(*++argv, key); 735 break; 736 default: 737 usage(1+*argv); 738 } 739 } else { 740 if ((rtm_addrs & RTA_DST) == 0) { 741 dest = *argv; 742 ishost = getaddr(RTA_DST, *argv, &hp); 743 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 744 gateway = *argv; 745 (void) getaddr(RTA_GATEWAY, *argv, &hp); 746 } else { 747 (void) getaddr(RTA_NETMASK, *argv, 0); 748 forcenet = 1; 749 } 750 } 751 } 752 if (forcehost) { 753 ishost = 1; 754 #ifdef INET6 755 if (af == AF_INET6) { 756 rtm_addrs &= ~RTA_NETMASK; 757 memset((void *)&so_mask, 0, sizeof(so_mask)); 758 } 759 #endif 760 } 761 if (forcenet) 762 ishost = 0; 763 flags |= RTF_UP; 764 if (ishost) 765 flags |= RTF_HOST; 766 if (iflag == 0) 767 flags |= RTF_GATEWAY; 768 if (proxy) { 769 so_dst.sinarp.sin_other = SIN_PROXY; 770 flags |= RTF_ANNOUNCE; 771 } 772 for (attempts = 1; ; attempts++) { 773 errno = 0; 774 if ((ret = rtmsg(*cmd, flags)) == 0) 775 break; 776 if (errno != ENETUNREACH && errno != ESRCH) 777 break; 778 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 779 hp->h_addr_list++; 780 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 781 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 782 } else 783 break; 784 } 785 if (*cmd == 'g') 786 exit(0); 787 if (!qflag) { 788 oerrno = errno; 789 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 790 if (*gateway) { 791 (void) printf(": gateway %s", gateway); 792 if (attempts > 1 && ret == 0 && af == AF_INET) 793 (void) printf(" (%s)", 794 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 795 } 796 if (ret == 0) { 797 (void) printf("\n"); 798 } else { 799 switch (oerrno) { 800 case ESRCH: 801 err = "not in table"; 802 break; 803 case EBUSY: 804 err = "entry in use"; 805 break; 806 case ENOBUFS: 807 err = "routing table overflow"; 808 break; 809 case EDQUOT: /* handle recursion avoidance in rt_setgate() */ 810 err = "gateway uses the same route"; 811 break; 812 default: 813 err = strerror(oerrno); 814 break; 815 } 816 (void) printf(": %s\n", err); 817 } 818 } 819 exit(ret != 0); 820 } 821 822 void 823 inet_makenetandmask(net, sin, bits) 824 u_long net, bits; 825 struct sockaddr_in *sin; 826 { 827 u_long addr, mask = 0; 828 char *cp; 829 830 rtm_addrs |= RTA_NETMASK; 831 if (net == 0) 832 mask = addr = 0; 833 else if (net < 128) { 834 addr = net << IN_CLASSA_NSHIFT; 835 mask = IN_CLASSA_NET; 836 } else if (net < 65536) { 837 addr = net << IN_CLASSB_NSHIFT; 838 mask = IN_CLASSB_NET; 839 } else if (net < 16777216L) { 840 addr = net << IN_CLASSC_NSHIFT; 841 mask = IN_CLASSC_NET; 842 } else { 843 addr = net; 844 if ((addr & IN_CLASSA_HOST) == 0) 845 mask = IN_CLASSA_NET; 846 else if ((addr & IN_CLASSB_HOST) == 0) 847 mask = IN_CLASSB_NET; 848 else if ((addr & IN_CLASSC_HOST) == 0) 849 mask = IN_CLASSC_NET; 850 else 851 mask = -1; 852 } 853 if (bits) 854 mask = 0xffffffff << (32 - bits); 855 sin->sin_addr.s_addr = htonl(addr); 856 sin = &so_mask.sin; 857 sin->sin_addr.s_addr = htonl(mask); 858 sin->sin_len = 0; 859 sin->sin_family = 0; 860 cp = (char *)(&sin->sin_addr + 1); 861 while (*--cp == 0 && cp > (char *)sin) 862 ; 863 sin->sin_len = 1 + cp - (char *)sin; 864 } 865 866 #ifdef INET6 867 /* 868 * XXX the function may need more improvement... 869 */ 870 static int 871 inet6_makenetandmask(sin6, plen) 872 struct sockaddr_in6 *sin6; 873 char *plen; 874 { 875 struct in6_addr in6; 876 877 if (!plen) { 878 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 879 sin6->sin6_scope_id == 0) { 880 plen = "0"; 881 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 882 /* aggregatable global unicast - RFC2374 */ 883 memset(&in6, 0, sizeof(in6)); 884 if (!memcmp(&sin6->sin6_addr.s6_addr[8], 885 &in6.s6_addr[8], 8)) 886 plen = "64"; 887 } 888 } 889 890 if (!plen || strcmp(plen, "128") == 0) 891 return 1; 892 rtm_addrs |= RTA_NETMASK; 893 (void)prefixlen(plen); 894 return 0; 895 } 896 #endif 897 898 /* 899 * Interpret an argument as a network address of some kind, 900 * returning 1 if a host address, 0 if a network address. 901 */ 902 int 903 getaddr(which, s, hpp) 904 int which; 905 char *s; 906 struct hostent **hpp; 907 { 908 sup su; 909 struct hostent *hp; 910 struct netent *np; 911 u_long val; 912 char *q; 913 int afamily; /* local copy of af so we can change it */ 914 915 if (af == 0) { 916 af = AF_INET; 917 aflen = sizeof(struct sockaddr_in); 918 } 919 afamily = af; 920 rtm_addrs |= which; 921 switch (which) { 922 case RTA_DST: 923 su = &so_dst; 924 break; 925 case RTA_GATEWAY: 926 su = &so_gate; 927 if (iflag) { 928 struct ifaddrs *ifap, *ifa; 929 struct sockaddr_dl *sdl = NULL; 930 931 if (getifaddrs(&ifap)) 932 err(1, "getifaddrs"); 933 934 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 935 if (ifa->ifa_addr->sa_family != AF_LINK) 936 continue; 937 938 if (strcmp(s, ifa->ifa_name)) 939 continue; 940 941 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 942 } 943 /* If we found it, then use it */ 944 if (sdl) { 945 /* 946 * Copy is safe since we have a 947 * sockaddr_storage member in sockunion{}. 948 * Note that we need to copy before calling 949 * freeifaddrs(). 950 */ 951 memcpy(&su->sdl, sdl, sdl->sdl_len); 952 } 953 freeifaddrs(ifap); 954 if (sdl) 955 return(1); 956 } 957 break; 958 case RTA_NETMASK: 959 su = &so_mask; 960 break; 961 case RTA_GENMASK: 962 su = &so_genmask; 963 break; 964 case RTA_IFP: 965 su = &so_ifp; 966 afamily = AF_LINK; 967 break; 968 case RTA_IFA: 969 su = &so_ifa; 970 break; 971 default: 972 usage("internal error"); 973 /*NOTREACHED*/ 974 } 975 su->sa.sa_len = aflen; 976 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 977 if (strcmp(s, "default") == 0) { 978 /* 979 * Default is net 0.0.0.0/0 980 */ 981 switch (which) { 982 case RTA_DST: 983 forcenet++; 984 #if 0 985 bzero(su, sizeof(*su)); /* for readability */ 986 #endif 987 (void) getaddr(RTA_NETMASK, s, 0); 988 break; 989 #if 0 990 case RTA_NETMASK: 991 case RTA_GENMASK: 992 bzero(su, sizeof(*su)); /* for readability */ 993 #endif 994 } 995 return (0); 996 } 997 switch (afamily) { 998 #ifdef INET6 999 case AF_INET6: 1000 { 1001 struct addrinfo hints, *res; 1002 1003 q = NULL; 1004 if (which == RTA_DST && (q = strchr(s, '/')) != NULL) 1005 *q = '\0'; 1006 memset(&hints, 0, sizeof(hints)); 1007 hints.ai_family = afamily; /*AF_INET6*/ 1008 hints.ai_flags = AI_NUMERICHOST; 1009 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1010 if (getaddrinfo(s, "0", &hints, &res) != 0 || 1011 res->ai_family != AF_INET6 || 1012 res->ai_addrlen != sizeof(su->sin6)) { 1013 (void) fprintf(stderr, "%s: bad value\n", s); 1014 exit(1); 1015 } 1016 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1017 #ifdef __KAME__ 1018 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1019 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) && 1020 su->sin6.sin6_scope_id) { 1021 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1022 htons(su->sin6.sin6_scope_id); 1023 su->sin6.sin6_scope_id = 0; 1024 } 1025 #endif 1026 freeaddrinfo(res); 1027 if (q != NULL) 1028 *q++ = '/'; 1029 if (which == RTA_DST) 1030 return (inet6_makenetandmask(&su->sin6, q)); 1031 return (0); 1032 } 1033 #endif /* INET6 */ 1034 1035 #ifdef NS 1036 case AF_NS: 1037 if (which == RTA_DST) { 1038 extern short ns_bh[3]; 1039 struct sockaddr_ns *sms = &(so_mask.sns); 1040 memset(sms, 0, sizeof(*sms)); 1041 sms->sns_family = 0; 1042 sms->sns_len = 6; 1043 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1044 rtm_addrs |= RTA_NETMASK; 1045 } 1046 su->sns.sns_addr = ns_addr(s); 1047 return (!ns_nullhost(su->sns.sns_addr)); 1048 #endif 1049 1050 1051 case AF_APPLETALK: 1052 if (!atalk_aton(s, &su->sat.sat_addr)) 1053 errx(EX_NOHOST, "bad address: %s", s); 1054 rtm_addrs |= RTA_NETMASK; 1055 return(forcehost || su->sat.sat_addr.s_node != 0); 1056 1057 case AF_LINK: 1058 link_addr(s, &su->sdl); 1059 return (1); 1060 1061 1062 case PF_ROUTE: 1063 su->sa.sa_len = sizeof(*su); 1064 sockaddr(s, &su->sa); 1065 return (1); 1066 1067 case AF_INET: 1068 default: 1069 break; 1070 } 1071 1072 if (hpp == NULL) 1073 hpp = &hp; 1074 *hpp = NULL; 1075 1076 q = strchr(s,'/'); 1077 if (q && which == RTA_DST) { 1078 *q = '\0'; 1079 if ((val = inet_network(s)) != INADDR_NONE) { 1080 inet_makenetandmask( 1081 val, &su->sin, strtoul(q+1, 0, 0)); 1082 return (0); 1083 } 1084 *q = '/'; 1085 } 1086 if ((which != RTA_DST || forcenet == 0) && 1087 inet_aton(s, &su->sin.sin_addr)) { 1088 val = su->sin.sin_addr.s_addr; 1089 if (which != RTA_DST || 1090 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1091 return (1); 1092 else { 1093 val = ntohl(val); 1094 goto netdone; 1095 } 1096 } 1097 if (which == RTA_DST && forcehost == 0 && 1098 ((val = inet_network(s)) != INADDR_NONE || 1099 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) { 1100 netdone: 1101 inet_makenetandmask(val, &su->sin, 0); 1102 return (0); 1103 } 1104 hp = gethostbyname(s); 1105 if (hp) { 1106 *hpp = hp; 1107 su->sin.sin_family = hp->h_addrtype; 1108 memmove((char *)&su->sin.sin_addr, hp->h_addr, 1109 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1110 return (1); 1111 } 1112 errx(EX_NOHOST, "bad address: %s", s); 1113 } 1114 1115 int 1116 prefixlen(s) 1117 char *s; 1118 { 1119 int len = atoi(s), q, r; 1120 int max; 1121 char *p; 1122 1123 rtm_addrs |= RTA_NETMASK; 1124 switch (af) { 1125 #ifdef INET6 1126 case AF_INET6: 1127 max = 128; 1128 p = (char *)&so_mask.sin6.sin6_addr; 1129 break; 1130 #endif 1131 case AF_INET: 1132 max = 32; 1133 p = (char *)&so_mask.sin.sin_addr; 1134 break; 1135 default: 1136 (void) fprintf(stderr, "prefixlen not supported in this af\n"); 1137 exit(1); 1138 /*NOTREACHED*/ 1139 } 1140 1141 if (len < 0 || max < len) { 1142 (void) fprintf(stderr, "%s: bad value\n", s); 1143 exit(1); 1144 } 1145 1146 q = len >> 3; 1147 r = len & 7; 1148 so_mask.sa.sa_family = af; 1149 so_mask.sa.sa_len = aflen; 1150 memset((void *)p, 0, max / 8); 1151 if (q > 0) 1152 memset((void *)p, 0xff, q); 1153 if (r > 0) 1154 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1155 if (len == max) 1156 return -1; 1157 else 1158 return len; 1159 } 1160 1161 #ifdef NS 1162 short ns_nullh[] = {0,0,0}; 1163 short ns_bh[] = {-1,-1,-1}; 1164 1165 char * 1166 ns_print(sns) 1167 struct sockaddr_ns *sns; 1168 { 1169 struct ns_addr work; 1170 union { union ns_net net_e; u_long long_e; } net; 1171 u_short port; 1172 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 1173 char *host = ""; 1174 char *p; 1175 u_char *q; 1176 1177 work = sns->sns_addr; 1178 port = ntohs(work.x_port); 1179 work.x_port = 0; 1180 net.net_e = work.x_net; 1181 if (ns_nullhost(work) && net.long_e == 0) { 1182 if (!port) 1183 return ("*.*"); 1184 (void) sprintf(mybuf, "*.%XH", port); 1185 return (mybuf); 1186 } 1187 1188 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1189 host = "any"; 1190 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1191 host = "*"; 1192 else { 1193 q = work.x_host.c_host; 1194 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 1195 q[0], q[1], q[2], q[3], q[4], q[5]); 1196 for (p = chost; *p == '0' && p < chost + 12; p++) 1197 /* void */; 1198 host = p; 1199 } 1200 if (port) 1201 (void) sprintf(cport, ".%XH", htons(port)); 1202 else 1203 *cport = 0; 1204 1205 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 1206 (unsigned long)ntohl(net.long_e), 1207 host, cport); 1208 return (mybuf); 1209 } 1210 #endif 1211 1212 void 1213 interfaces() 1214 { 1215 size_t needed; 1216 int mib[6]; 1217 char *buf, *lim, *next; 1218 struct rt_msghdr *rtm; 1219 1220 mib[0] = CTL_NET; 1221 mib[1] = PF_ROUTE; 1222 mib[2] = 0; /* protocol */ 1223 mib[3] = 0; /* wildcard address family */ 1224 mib[4] = NET_RT_IFLIST; 1225 mib[5] = 0; /* no flags */ 1226 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1227 err(EX_OSERR, "route-sysctl-estimate"); 1228 if ((buf = malloc(needed)) == NULL) 1229 errx(EX_OSERR, "malloc failed"); 1230 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1231 err(EX_OSERR, "actual retrieval of interface table"); 1232 lim = buf + needed; 1233 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1234 rtm = (struct rt_msghdr *)next; 1235 print_rtmsg(rtm, rtm->rtm_msglen); 1236 } 1237 } 1238 1239 void 1240 monitor() 1241 { 1242 int n; 1243 char msg[2048]; 1244 1245 verbose = 1; 1246 if (debugonly) { 1247 interfaces(); 1248 exit(0); 1249 } 1250 for(;;) { 1251 time_t now; 1252 n = read(s, msg, 2048); 1253 now = time(NULL); 1254 (void) printf("\ngot message of size %d on %s", n, ctime(&now)); 1255 print_rtmsg((struct rt_msghdr *)msg, n); 1256 } 1257 } 1258 1259 struct { 1260 struct rt_msghdr m_rtm; 1261 char m_space[512]; 1262 } m_rtmsg; 1263 1264 int 1265 rtmsg(cmd, flags) 1266 int cmd, flags; 1267 { 1268 static int seq; 1269 int rlen; 1270 char *cp = m_rtmsg.m_space; 1271 int l; 1272 1273 #define NEXTADDR(w, u) \ 1274 if (rtm_addrs & (w)) {\ 1275 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1276 if (verbose) sodump(&(u),"u");\ 1277 } 1278 1279 errno = 0; 1280 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1281 if (cmd == 'a') 1282 cmd = RTM_ADD; 1283 else if (cmd == 'c') 1284 cmd = RTM_CHANGE; 1285 else if (cmd == 'g') { 1286 cmd = RTM_GET; 1287 if (so_ifp.sa.sa_family == 0) { 1288 so_ifp.sa.sa_family = AF_LINK; 1289 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1290 rtm_addrs |= RTA_IFP; 1291 } 1292 } else 1293 cmd = RTM_DELETE; 1294 #define rtm m_rtmsg.m_rtm 1295 rtm.rtm_type = cmd; 1296 rtm.rtm_flags = flags; 1297 rtm.rtm_version = RTM_VERSION; 1298 rtm.rtm_seq = ++seq; 1299 rtm.rtm_addrs = rtm_addrs; 1300 rtm.rtm_rmx = rt_metrics; 1301 rtm.rtm_inits = rtm_inits; 1302 1303 if (rtm_addrs & RTA_NETMASK) 1304 mask_addr(); 1305 NEXTADDR(RTA_DST, so_dst); 1306 NEXTADDR(RTA_GATEWAY, so_gate); 1307 NEXTADDR(RTA_NETMASK, so_mask); 1308 NEXTADDR(RTA_GENMASK, so_genmask); 1309 NEXTADDR(RTA_IFP, so_ifp); 1310 NEXTADDR(RTA_IFA, so_ifa); 1311 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1312 if (verbose) 1313 print_rtmsg(&rtm, l); 1314 if (debugonly) 1315 return (0); 1316 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1317 warn("writing to routing socket"); 1318 return (-1); 1319 } 1320 if (cmd == RTM_GET) { 1321 do { 1322 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1323 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1324 if (l < 0) 1325 warn("read from routing socket"); 1326 else 1327 print_getmsg(&rtm, l); 1328 } 1329 #undef rtm 1330 return (0); 1331 } 1332 1333 void 1334 mask_addr() 1335 { 1336 int olen = so_mask.sa.sa_len; 1337 char *cp1 = olen + (char *)&so_mask, *cp2; 1338 1339 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1340 if (*--cp1 != 0) { 1341 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1342 break; 1343 } 1344 if ((rtm_addrs & RTA_DST) == 0) 1345 return; 1346 switch (so_dst.sa.sa_family) { 1347 #ifdef NS 1348 case AF_NS: 1349 #endif 1350 case AF_INET: 1351 #ifdef INET6 1352 case AF_INET6: 1353 #endif 1354 case AF_APPLETALK: 1355 case 0: 1356 return; 1357 } 1358 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1359 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1360 while (cp2 > cp1) 1361 *--cp2 = 0; 1362 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1363 while (cp1 > so_dst.sa.sa_data) 1364 *--cp1 &= *--cp2; 1365 } 1366 1367 char *msgtypes[] = { 1368 "", 1369 "RTM_ADD: Add Route", 1370 "RTM_DELETE: Delete Route", 1371 "RTM_CHANGE: Change Metrics or flags", 1372 "RTM_GET: Report Metrics", 1373 "RTM_LOSING: Kernel Suspects Partitioning", 1374 "RTM_REDIRECT: Told to use different route", 1375 "RTM_MISS: Lookup failed on this address", 1376 "RTM_LOCK: fix specified metrics", 1377 "RTM_OLDADD: caused by SIOCADDRT", 1378 "RTM_OLDDEL: caused by SIOCDELRT", 1379 "RTM_RESOLVE: Route created by cloning", 1380 "RTM_NEWADDR: address being added to iface", 1381 "RTM_DELADDR: address being removed from iface", 1382 "RTM_IFINFO: iface status change", 1383 "RTM_NEWMADDR: new multicast group membership on iface", 1384 "RTM_DELMADDR: multicast group membership removed from iface", 1385 "RTM_IFANNOUNCE: interface arrival/departure", 1386 0, 1387 }; 1388 1389 char metricnames[] = 1390 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1391 "\1mtu"; 1392 char routeflags[] = 1393 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1394 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1395 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1396 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1397 char ifnetflags[] = 1398 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1399 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1400 "\017LINK2\020MULTICAST"; 1401 char addrnames[] = 1402 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1403 1404 void 1405 print_rtmsg(rtm, msglen) 1406 struct rt_msghdr *rtm; 1407 int msglen; 1408 { 1409 struct if_msghdr *ifm; 1410 struct ifa_msghdr *ifam; 1411 #ifdef RTM_NEWMADDR 1412 struct ifma_msghdr *ifmam; 1413 #endif 1414 struct if_announcemsghdr *ifan; 1415 1416 if (verbose == 0) 1417 return; 1418 if (rtm->rtm_version != RTM_VERSION) { 1419 (void) printf("routing message version %d not understood\n", 1420 rtm->rtm_version); 1421 return; 1422 } 1423 if (msgtypes[rtm->rtm_type] != NULL) 1424 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1425 else 1426 (void)printf("#%d: ", rtm->rtm_type); 1427 (void)printf("len %d, ", rtm->rtm_msglen); 1428 switch (rtm->rtm_type) { 1429 case RTM_IFINFO: 1430 ifm = (struct if_msghdr *)rtm; 1431 (void) printf("if# %d, flags:", ifm->ifm_index); 1432 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1433 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1434 break; 1435 case RTM_NEWADDR: 1436 case RTM_DELADDR: 1437 ifam = (struct ifa_msghdr *)rtm; 1438 (void) printf("metric %d, flags:", ifam->ifam_metric); 1439 bprintf(stdout, ifam->ifam_flags, routeflags); 1440 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1441 break; 1442 #ifdef RTM_NEWMADDR 1443 case RTM_NEWMADDR: 1444 case RTM_DELMADDR: 1445 ifmam = (struct ifma_msghdr *)rtm; 1446 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1447 break; 1448 #endif 1449 case RTM_IFANNOUNCE: 1450 ifan = (struct if_announcemsghdr *)rtm; 1451 (void) printf("if# %d, what: ", ifan->ifan_index); 1452 switch (ifan->ifan_what) { 1453 case IFAN_ARRIVAL: 1454 printf("arrival"); 1455 break; 1456 case IFAN_DEPARTURE: 1457 printf("departure"); 1458 break; 1459 default: 1460 printf("#%d", ifan->ifan_what); 1461 break; 1462 } 1463 printf("\n"); 1464 break; 1465 1466 default: 1467 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1468 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1469 bprintf(stdout, rtm->rtm_flags, routeflags); 1470 pmsg_common(rtm); 1471 } 1472 } 1473 1474 void 1475 print_getmsg(rtm, msglen) 1476 struct rt_msghdr *rtm; 1477 int msglen; 1478 { 1479 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1480 struct sockaddr_dl *ifp = NULL; 1481 struct sockaddr *sa; 1482 char *cp; 1483 int i; 1484 1485 (void) printf(" route to: %s\n", routename(&so_dst)); 1486 if (rtm->rtm_version != RTM_VERSION) { 1487 warnx("routing message version %d not understood", 1488 rtm->rtm_version); 1489 return; 1490 } 1491 if (rtm->rtm_msglen > msglen) { 1492 warnx("message length mismatch, in packet %d, returned %d", 1493 rtm->rtm_msglen, msglen); 1494 } 1495 if (rtm->rtm_errno) { 1496 errno = rtm->rtm_errno; 1497 warn("message indicates error %d", errno); 1498 return; 1499 } 1500 cp = ((char *)(rtm + 1)); 1501 if (rtm->rtm_addrs) 1502 for (i = 1; i; i <<= 1) 1503 if (i & rtm->rtm_addrs) { 1504 sa = (struct sockaddr *)cp; 1505 switch (i) { 1506 case RTA_DST: 1507 dst = sa; 1508 break; 1509 case RTA_GATEWAY: 1510 gate = sa; 1511 break; 1512 case RTA_NETMASK: 1513 mask = sa; 1514 break; 1515 case RTA_IFP: 1516 if (sa->sa_family == AF_LINK && 1517 ((struct sockaddr_dl *)sa)->sdl_nlen) 1518 ifp = (struct sockaddr_dl *)sa; 1519 break; 1520 } 1521 ADVANCE(cp, sa); 1522 } 1523 if (dst && mask) 1524 mask->sa_family = dst->sa_family; /* XXX */ 1525 if (dst) 1526 (void)printf("destination: %s\n", routename(dst)); 1527 if (mask) { 1528 int savenflag = nflag; 1529 1530 nflag = 1; 1531 (void)printf(" mask: %s\n", routename(mask)); 1532 nflag = savenflag; 1533 } 1534 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1535 (void)printf(" gateway: %s\n", routename(gate)); 1536 if (ifp) 1537 (void)printf(" interface: %.*s\n", 1538 ifp->sdl_nlen, ifp->sdl_data); 1539 (void)printf(" flags: "); 1540 bprintf(stdout, rtm->rtm_flags, routeflags); 1541 1542 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1543 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1544 1545 (void) printf("\n%s\n", "\ 1546 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1547 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1548 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1549 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1550 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1551 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1552 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1553 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1554 if (rtm->rtm_rmx.rmx_expire) 1555 rtm->rtm_rmx.rmx_expire -= time(0); 1556 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1557 #undef lock 1558 #undef msec 1559 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1560 if (verbose) 1561 pmsg_common(rtm); 1562 else if (rtm->rtm_addrs &~ RTA_IGN) { 1563 (void) printf("sockaddrs: "); 1564 bprintf(stdout, rtm->rtm_addrs, addrnames); 1565 putchar('\n'); 1566 } 1567 #undef RTA_IGN 1568 } 1569 1570 void 1571 pmsg_common(rtm) 1572 struct rt_msghdr *rtm; 1573 { 1574 (void) printf("\nlocks: "); 1575 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1576 (void) printf(" inits: "); 1577 bprintf(stdout, rtm->rtm_inits, metricnames); 1578 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1579 } 1580 1581 void 1582 pmsg_addrs(cp, addrs) 1583 char *cp; 1584 int addrs; 1585 { 1586 struct sockaddr *sa; 1587 int i; 1588 1589 if (addrs == 0) { 1590 (void) putchar('\n'); 1591 return; 1592 } 1593 (void) printf("\nsockaddrs: "); 1594 bprintf(stdout, addrs, addrnames); 1595 (void) putchar('\n'); 1596 for (i = 1; i; i <<= 1) 1597 if (i & addrs) { 1598 sa = (struct sockaddr *)cp; 1599 (void) printf(" %s", routename(sa)); 1600 ADVANCE(cp, sa); 1601 } 1602 (void) putchar('\n'); 1603 (void) fflush(stdout); 1604 } 1605 1606 void 1607 bprintf(fp, b, s) 1608 FILE *fp; 1609 int b; 1610 u_char *s; 1611 { 1612 int i; 1613 int gotsome = 0; 1614 1615 if (b == 0) 1616 return; 1617 while ((i = *s++) != 0) { 1618 if (b & (1 << (i-1))) { 1619 if (gotsome == 0) 1620 i = '<'; 1621 else 1622 i = ','; 1623 (void) putc(i, fp); 1624 gotsome = 1; 1625 for (; (i = *s) > 32; s++) 1626 (void) putc(i, fp); 1627 } else 1628 while (*s > 32) 1629 s++; 1630 } 1631 if (gotsome) 1632 (void) putc('>', fp); 1633 } 1634 1635 int 1636 keyword(cp) 1637 char *cp; 1638 { 1639 struct keytab *kt = keywords; 1640 1641 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1642 kt++; 1643 return kt->kt_i; 1644 } 1645 1646 void 1647 sodump(su, which) 1648 sup su; 1649 char *which; 1650 { 1651 switch (su->sa.sa_family) { 1652 case AF_LINK: 1653 (void) printf("%s: link %s; ", 1654 which, link_ntoa(&su->sdl)); 1655 break; 1656 case AF_INET: 1657 (void) printf("%s: inet %s; ", 1658 which, inet_ntoa(su->sin.sin_addr)); 1659 break; 1660 case AF_APPLETALK: 1661 (void) printf("%s: atalk %s; ", 1662 which, atalk_ntoa(su->sat.sat_addr)); 1663 break; 1664 #ifdef NS 1665 case AF_NS: 1666 (void) printf("%s: xns %s; ", 1667 which, ns_ntoa(su->sns.sns_addr)); 1668 break; 1669 #endif 1670 } 1671 (void) fflush(stdout); 1672 } 1673 1674 /* States*/ 1675 #define VIRGIN 0 1676 #define GOTONE 1 1677 #define GOTTWO 2 1678 /* Inputs */ 1679 #define DIGIT (4*0) 1680 #define END (4*1) 1681 #define DELIM (4*2) 1682 1683 void 1684 sockaddr(addr, sa) 1685 char *addr; 1686 struct sockaddr *sa; 1687 { 1688 char *cp = (char *)sa; 1689 int size = sa->sa_len; 1690 char *cplim = cp + size; 1691 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1692 1693 memset(cp, 0, size); 1694 cp++; 1695 do { 1696 if ((*addr >= '0') && (*addr <= '9')) { 1697 new = *addr - '0'; 1698 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1699 new = *addr - 'a' + 10; 1700 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1701 new = *addr - 'A' + 10; 1702 } else if (*addr == 0) 1703 state |= END; 1704 else 1705 state |= DELIM; 1706 addr++; 1707 switch (state /* | INPUT */) { 1708 case GOTTWO | DIGIT: 1709 *cp++ = byte; /*FALLTHROUGH*/ 1710 case VIRGIN | DIGIT: 1711 state = GOTONE; byte = new; continue; 1712 case GOTONE | DIGIT: 1713 state = GOTTWO; byte = new + (byte << 4); continue; 1714 default: /* | DELIM */ 1715 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1716 case GOTONE | END: 1717 case GOTTWO | END: 1718 *cp++ = byte; /* FALLTHROUGH */ 1719 case VIRGIN | END: 1720 break; 1721 } 1722 break; 1723 } while (cp < cplim); 1724 sa->sa_len = cp - (char *)sa; 1725 } 1726 1727 int 1728 atalk_aton(const char *text, struct at_addr *addr) 1729 { 1730 u_int net, node; 1731 1732 if (sscanf(text, "%u.%u", &net, &node) != 2 1733 || net > 0xffff || node > 0xff) 1734 return(0); 1735 addr->s_net = htons(net); 1736 addr->s_node = node; 1737 return(1); 1738 } 1739 1740 char * 1741 atalk_ntoa(struct at_addr at) 1742 { 1743 static char buf[20]; 1744 1745 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1746 return(buf); 1747 } 1748