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 * @(#) Copyright (c) 1983, 1989, 1991, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)route.c 8.6 (Berkeley) 4/28/95 35 * $FreeBSD: src/sbin/route/route.c,v 1.40.2.11 2003/02/27 23:10:10 ru Exp $ 36 * $DragonFly: src/sbin/route/route.c,v 1.4 2003/11/01 17:16:02 drhodus Exp $ 37 */ 38 39 #include <sys/param.h> 40 #include <sys/file.h> 41 #include <sys/socket.h> 42 #include <sys/ioctl.h> 43 #include <sys/sysctl.h> 44 #include <sys/types.h> 45 46 #include <net/if.h> 47 #include <net/route.h> 48 #include <net/if_dl.h> 49 #include <netinet/in.h> 50 #include <netinet/if_ether.h> 51 #include <netatalk/at.h> 52 #ifdef NS 53 #include <netns/ns.h> 54 #endif 55 #include <arpa/inet.h> 56 #include <netdb.h> 57 58 #include <ctype.h> 59 #include <err.h> 60 #include <errno.h> 61 #include <paths.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <sysexits.h> 66 #include <unistd.h> 67 #include <ifaddrs.h> 68 69 struct keytab { 70 char *kt_cp; 71 int kt_i; 72 } keywords[] = { 73 #include "keywords.h" 74 {0, 0} 75 }; 76 77 struct ortentry route; 78 union sockunion { 79 struct sockaddr sa; 80 struct sockaddr_in sin; 81 #ifdef INET6 82 struct sockaddr_in6 sin6; 83 #endif 84 struct sockaddr_at sat; 85 #ifdef NS 86 struct sockaddr_ns sns; 87 #endif 88 struct sockaddr_dl sdl; 89 struct sockaddr_inarp sinarp; 90 struct sockaddr_storage ss; /* added to avoid memory overrun */ 91 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 92 93 typedef union sockunion *sup; 94 int pid, rtm_addrs; 95 int s; 96 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 97 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 98 int locking, lockrest, debugonly; 99 struct rt_metrics rt_metrics; 100 u_long rtm_inits; 101 uid_t uid; 102 int atalk_aton(const char *, struct at_addr *); 103 char *atalk_ntoa(struct at_addr); 104 const char *routename(), *netname(); 105 void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 106 void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 107 #ifdef INET6 108 static int inet6_makenetandmask(struct sockaddr_in6 *, char *); 109 #endif 110 int getaddr(), rtmsg(), x25_makemask(); 111 int prefixlen(); 112 extern char *iso_ntoa(); 113 114 void usage(const char *) __dead2; 115 116 void 117 usage(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 } 126 127 #define ROUNDUP(a) \ 128 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 129 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 130 131 int 132 main(int argc, char **argv) 133 { 134 int ch; 135 136 if (argc < 2) 137 usage((char *)NULL); 138 139 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 140 switch(ch) { 141 case 'n': 142 nflag = 1; 143 break; 144 case 'q': 145 qflag = 1; 146 break; 147 case 'v': 148 verbose = 1; 149 break; 150 case 't': 151 tflag = 1; 152 break; 153 case 'd': 154 debugonly = 1; 155 break; 156 case '?': 157 default: 158 usage((char *)NULL); 159 } 160 argc -= optind; 161 argv += optind; 162 163 pid = getpid(); 164 uid = geteuid(); 165 if (tflag) 166 s = open(_PATH_DEVNULL, O_WRONLY, 0); 167 else 168 s = socket(PF_ROUTE, SOCK_RAW, 0); 169 if (s < 0) 170 err(EX_OSERR, "socket"); 171 if (*argv) 172 switch (keyword(*argv)) { 173 case K_GET: 174 uid = 0; 175 /* FALLTHROUGH */ 176 177 case K_CHANGE: 178 case K_ADD: 179 case K_DELETE: 180 newroute(argc, argv); 181 /* NOTREACHED */ 182 183 case K_MONITOR: 184 monitor(); 185 /* NOTREACHED */ 186 187 case K_FLUSH: 188 flushroutes(argc, argv); 189 exit(0); 190 /* NOTREACHED */ 191 } 192 usage(*argv); 193 /* NOTREACHED */ 194 } 195 196 /* 197 * Purge all entries in the routing tables not 198 * associated with network interfaces. 199 */ 200 void 201 flushroutes(int argc, char **argv) 202 { 203 size_t needed; 204 int mib[6], rlen, seqno; 205 char *buf, *next, *lim; 206 register struct rt_msghdr *rtm; 207 208 if (uid) { 209 errx(EX_NOPERM, "must be root to alter routing table"); 210 } 211 shutdown(s, 0); /* 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 #ifdef NS 228 case K_XNS: 229 af = AF_NS; 230 break; 231 #endif 232 case K_LINK: 233 af = AF_LINK; 234 break; 235 default: 236 goto bad; 237 } else 238 bad: usage(*argv); 239 } 240 mib[0] = CTL_NET; 241 mib[1] = PF_ROUTE; 242 mib[2] = 0; /* protocol */ 243 mib[3] = 0; /* wildcard address family */ 244 mib[4] = NET_RT_DUMP; 245 mib[5] = 0; /* no flags */ 246 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 247 err(EX_OSERR, "route-sysctl-estimate"); 248 if ((buf = malloc(needed)) == NULL) 249 errx(EX_OSERR, "malloc failed"); 250 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 251 err(EX_OSERR, "route-sysctl-get"); 252 lim = buf + needed; 253 if (verbose) 254 (void) printf("Examining routing table from sysctl\n"); 255 seqno = 0; /* ??? */ 256 for (next = buf; next < lim; next += rtm->rtm_msglen) { 257 rtm = (struct rt_msghdr *)next; 258 if (verbose) 259 print_rtmsg(rtm, rtm->rtm_msglen); 260 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 261 continue; 262 if (af) { 263 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 264 265 if (sa->sa_family != af) 266 continue; 267 } 268 if (debugonly) 269 continue; 270 rtm->rtm_type = RTM_DELETE; 271 rtm->rtm_seq = seqno; 272 rlen = write(s, next, rtm->rtm_msglen); 273 if (rlen < (int)rtm->rtm_msglen) { 274 warn("write to routing socket"); 275 (void) printf("got only %d for rlen\n", rlen); 276 break; 277 } 278 seqno++; 279 if (qflag) 280 continue; 281 if (verbose) 282 print_rtmsg(rtm, rlen); 283 else { 284 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 285 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 286 routename(sa) : netname(sa)); 287 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 288 (void) printf("%-20.20s ", routename(sa)); 289 (void) printf("done\n"); 290 } 291 } 292 } 293 294 const char * 295 routename(struct sockaddr *sa) 296 { 297 register char *cp; 298 static char line[MAXHOSTNAMELEN + 1]; 299 struct hostent *hp; 300 static char domain[MAXHOSTNAMELEN + 1]; 301 static int first = 1; 302 #ifdef NS 303 char *ns_print(); 304 #endif 305 306 if (first) { 307 first = 0; 308 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 309 (cp = strchr(domain, '.'))) { 310 domain[MAXHOSTNAMELEN] = '\0'; 311 (void) strcpy(domain, cp + 1); 312 } else 313 domain[0] = 0; 314 } 315 316 if (sa->sa_len == 0) 317 strcpy(line, "default"); 318 else switch (sa->sa_family) { 319 320 case AF_INET: 321 { struct in_addr in; 322 in = ((struct sockaddr_in *)sa)->sin_addr; 323 324 cp = 0; 325 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 326 cp = "default"; 327 if (cp == 0 && !nflag) { 328 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 329 AF_INET); 330 if (hp) { 331 if ((cp = strchr(hp->h_name, '.')) && 332 !strcmp(cp + 1, domain)) 333 *cp = 0; 334 cp = hp->h_name; 335 } 336 } 337 if (cp) { 338 strncpy(line, cp, sizeof(line) - 1); 339 line[sizeof(line) - 1] = '\0'; 340 } else 341 (void) sprintf(line, "%s", inet_ntoa(in)); 342 break; 343 } 344 345 #ifdef INET6 346 case AF_INET6: 347 { 348 struct sockaddr_in6 sin6; /* use static var for safety */ 349 int niflags = 0; 350 #ifdef NI_WITHSCOPEID 351 niflags = NI_WITHSCOPEID; 352 #endif 353 354 memset(&sin6, 0, sizeof(sin6)); 355 memcpy(&sin6, sa, sa->sa_len); 356 sin6.sin6_len = sizeof(struct sockaddr_in6); 357 sin6.sin6_family = AF_INET6; 358 #ifdef __KAME__ 359 if (sa->sa_len == sizeof(struct sockaddr_in6) && 360 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 361 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 362 sin6.sin6_scope_id == 0) { 363 sin6.sin6_scope_id = 364 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 365 sin6.sin6_addr.s6_addr[2] = 0; 366 sin6.sin6_addr.s6_addr[3] = 0; 367 } 368 #endif 369 if (nflag) 370 niflags |= NI_NUMERICHOST; 371 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 372 line, sizeof(line), NULL, 0, niflags) != 0) 373 strncpy(line, "invalid", sizeof(line)); 374 375 return(line); 376 } 377 #endif 378 379 case AF_APPLETALK: 380 (void) snprintf(line, sizeof(line), "atalk %s", 381 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 382 break; 383 384 #ifdef NS 385 case AF_NS: 386 return (ns_print((struct sockaddr_ns *)sa)); 387 #endif 388 389 case AF_LINK: 390 return (link_ntoa((struct sockaddr_dl *)sa)); 391 392 default: 393 { u_short *s = (u_short *)sa; 394 u_short *slim = s + ((sa->sa_len + 1) >> 1); 395 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 396 char *cpe = line + sizeof(line); 397 398 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 399 cp += snprintf(cp, cpe - cp, " %x", *s); 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 */ 410 const char * 411 netname(struct sockaddr *sa) 412 { 413 char *cp = 0; 414 static char line[MAXHOSTNAMELEN + 1]; 415 struct netent *np = 0; 416 u_long net, mask; 417 register u_long i; 418 int subnetshift; 419 #ifdef NS 420 char *ns_print(); 421 #endif 422 423 switch (sa->sa_family) { 424 425 case AF_INET: 426 { struct in_addr in; 427 in = ((struct sockaddr_in *)sa)->sin_addr; 428 429 i = in.s_addr = ntohl(in.s_addr); 430 if (in.s_addr == 0) 431 cp = "default"; 432 else if (!nflag) { 433 if (IN_CLASSA(i)) { 434 mask = IN_CLASSA_NET; 435 subnetshift = 8; 436 } else if (IN_CLASSB(i)) { 437 mask = IN_CLASSB_NET; 438 subnetshift = 8; 439 } else { 440 mask = IN_CLASSC_NET; 441 subnetshift = 4; 442 } 443 /* 444 * If there are more bits than the standard mask 445 * would suggest, subnets must be in use. 446 * Guess at the subnet mask, assuming reasonable 447 * width subnet fields. 448 */ 449 while (in.s_addr &~ mask) 450 mask = (long)mask >> subnetshift; 451 net = in.s_addr & mask; 452 while ((mask & 1) == 0) 453 mask >>= 1, net >>= 1; 454 np = getnetbyaddr(net, AF_INET); 455 if (np) 456 cp = np->n_name; 457 } 458 #define C(x) (unsigned)((x) & 0xff) 459 if (cp) 460 strncpy(line, cp, sizeof(line)); 461 else if ((in.s_addr & 0xffffff) == 0) 462 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 463 else if ((in.s_addr & 0xffff) == 0) 464 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 465 C(in.s_addr >> 16)); 466 else if ((in.s_addr & 0xff) == 0) 467 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 468 C(in.s_addr >> 16), C(in.s_addr >> 8)); 469 else 470 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 471 C(in.s_addr >> 16), C(in.s_addr >> 8), 472 C(in.s_addr)); 473 #undef C 474 break; 475 } 476 477 #ifdef INET6 478 case AF_INET6: 479 { 480 struct sockaddr_in6 sin6; /* use static var for safety */ 481 int niflags = 0; 482 #ifdef NI_WITHSCOPEID 483 niflags = NI_WITHSCOPEID; 484 #endif 485 486 memset(&sin6, 0, sizeof(sin6)); 487 memcpy(&sin6, sa, sa->sa_len); 488 sin6.sin6_len = sizeof(struct sockaddr_in6); 489 sin6.sin6_family = AF_INET6; 490 #ifdef __KAME__ 491 if (sa->sa_len == sizeof(struct sockaddr_in6) && 492 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 493 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 494 sin6.sin6_scope_id == 0) { 495 sin6.sin6_scope_id = 496 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 497 sin6.sin6_addr.s6_addr[2] = 0; 498 sin6.sin6_addr.s6_addr[3] = 0; 499 } 500 #endif 501 if (nflag) 502 niflags |= NI_NUMERICHOST; 503 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 504 line, sizeof(line), NULL, 0, niflags) != 0) 505 strncpy(line, "invalid", sizeof(line)); 506 507 return(line); 508 } 509 #endif 510 511 case AF_APPLETALK: 512 (void) snprintf(line, sizeof(line), "atalk %s", 513 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 514 break; 515 516 #ifdef NS 517 case AF_NS: 518 return (ns_print((struct sockaddr_ns *)sa)); 519 break; 520 #endif 521 522 case AF_LINK: 523 return (link_ntoa((struct sockaddr_dl *)sa)); 524 525 526 default: 527 { u_short *s = (u_short *)sa->sa_data; 528 u_short *slim = s + ((sa->sa_len + 1)>>1); 529 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 530 char *cpe = line + sizeof(line); 531 532 while (s < slim && cp < cpe) 533 cp += snprintf(cp, cpe - cp, " %x", *s++); 534 break; 535 } 536 } 537 return (line); 538 } 539 540 void 541 set_metric(char *value, int key) 542 { 543 int flag = 0; 544 u_long noval, *valp = &noval; 545 546 switch (key) { 547 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 548 caseof(K_MTU, RTV_MTU, rmx_mtu); 549 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 550 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 551 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 552 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 553 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 554 caseof(K_RTT, RTV_RTT, rmx_rtt); 555 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 556 } 557 rtm_inits |= flag; 558 if (lockrest || locking) 559 rt_metrics.rmx_locks |= flag; 560 if (locking) 561 locking = 0; 562 *valp = atoi(value); 563 } 564 565 void 566 newroute(int argc, char **argv) 567 { 568 char *cmd, *dest = "", *gateway = "", *err; 569 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC; 570 int key; 571 struct hostent *hp = 0; 572 573 if (uid) { 574 errx(EX_NOPERM, "must be root to alter routing table"); 575 } 576 cmd = argv[0]; 577 if (*cmd != 'g') 578 shutdown(s, 0); /* Don't want to read back our messages */ 579 while (--argc > 0) { 580 if (**(++argv)== '-') { 581 switch (key = keyword(1 + *argv)) { 582 case K_LINK: 583 af = AF_LINK; 584 aflen = sizeof(struct sockaddr_dl); 585 break; 586 case K_INET: 587 af = AF_INET; 588 aflen = sizeof(struct sockaddr_in); 589 break; 590 #ifdef INET6 591 case K_INET6: 592 af = AF_INET6; 593 aflen = sizeof(struct sockaddr_in6); 594 break; 595 #endif 596 case K_ATALK: 597 af = AF_APPLETALK; 598 aflen = sizeof(struct sockaddr_at); 599 break; 600 case K_SA: 601 af = PF_ROUTE; 602 aflen = sizeof(union sockunion); 603 break; 604 #ifdef NS 605 case K_XNS: 606 af = AF_NS; 607 aflen = sizeof(struct sockaddr_ns); 608 break; 609 #endif 610 case K_IFACE: 611 case K_INTERFACE: 612 iflag++; 613 break; 614 case K_NOSTATIC: 615 flags &= ~RTF_STATIC; 616 break; 617 case K_LLINFO: 618 flags |= RTF_LLINFO; 619 break; 620 case K_LOCK: 621 locking = 1; 622 break; 623 case K_LOCKREST: 624 lockrest = 1; 625 break; 626 case K_HOST: 627 forcehost++; 628 break; 629 case K_REJECT: 630 flags |= RTF_REJECT; 631 break; 632 case K_BLACKHOLE: 633 flags |= RTF_BLACKHOLE; 634 break; 635 case K_PROTO1: 636 flags |= RTF_PROTO1; 637 break; 638 case K_PROTO2: 639 flags |= RTF_PROTO2; 640 break; 641 case K_PROXY: 642 proxy = 1; 643 break; 644 case K_CLONING: 645 flags |= RTF_CLONING; 646 break; 647 case K_XRESOLVE: 648 flags |= RTF_XRESOLVE; 649 break; 650 case K_STATIC: 651 flags |= RTF_STATIC; 652 break; 653 case K_IFA: 654 if (!--argc) 655 usage((char *)NULL); 656 (void) getaddr(RTA_IFA, *++argv, 0); 657 break; 658 case K_IFP: 659 if (!--argc) 660 usage((char *)NULL); 661 (void) getaddr(RTA_IFP, *++argv, 0); 662 break; 663 case K_GENMASK: 664 if (!--argc) 665 usage((char *)NULL); 666 (void) getaddr(RTA_GENMASK, *++argv, 0); 667 break; 668 case K_GATEWAY: 669 if (!--argc) 670 usage((char *)NULL); 671 (void) getaddr(RTA_GATEWAY, *++argv, 0); 672 break; 673 case K_DST: 674 if (!--argc) 675 usage((char *)NULL); 676 ishost = getaddr(RTA_DST, *++argv, &hp); 677 dest = *argv; 678 break; 679 case K_NETMASK: 680 if (!--argc) 681 usage((char *)NULL); 682 (void) getaddr(RTA_NETMASK, *++argv, 0); 683 /* FALLTHROUGH */ 684 case K_NET: 685 forcenet++; 686 break; 687 case K_PREFIXLEN: 688 if (!--argc) 689 usage((char *)NULL); 690 if (prefixlen(*++argv) == -1) { 691 forcenet = 0; 692 ishost = 1; 693 } else { 694 forcenet = 1; 695 ishost = 0; 696 } 697 break; 698 case K_MTU: 699 case K_HOPCOUNT: 700 case K_EXPIRE: 701 case K_RECVPIPE: 702 case K_SENDPIPE: 703 case K_SSTHRESH: 704 case K_RTT: 705 case K_RTTVAR: 706 if (!--argc) 707 usage((char *)NULL); 708 set_metric(*++argv, key); 709 break; 710 default: 711 usage(1+*argv); 712 } 713 } else { 714 if ((rtm_addrs & RTA_DST) == 0) { 715 dest = *argv; 716 ishost = getaddr(RTA_DST, *argv, &hp); 717 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 718 gateway = *argv; 719 (void) getaddr(RTA_GATEWAY, *argv, &hp); 720 } else { 721 (void) getaddr(RTA_NETMASK, *argv, 0); 722 forcenet = 1; 723 } 724 } 725 } 726 if (forcehost) { 727 ishost = 1; 728 #ifdef INET6 729 if (af == AF_INET6) { 730 rtm_addrs &= ~RTA_NETMASK; 731 memset((void *)&so_mask, 0, sizeof(so_mask)); 732 } 733 #endif 734 } 735 if (forcenet) 736 ishost = 0; 737 flags |= RTF_UP; 738 if (ishost) 739 flags |= RTF_HOST; 740 if (iflag == 0) 741 flags |= RTF_GATEWAY; 742 if (proxy) { 743 so_dst.sinarp.sin_other = SIN_PROXY; 744 flags |= RTF_ANNOUNCE; 745 } 746 for (attempts = 1; ; attempts++) { 747 errno = 0; 748 if ((ret = rtmsg(*cmd, flags)) == 0) 749 break; 750 if (errno != ENETUNREACH && errno != ESRCH) 751 break; 752 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 753 hp->h_addr_list++; 754 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 755 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 756 } else 757 break; 758 } 759 if (*cmd == 'g') 760 exit(0); 761 if (!qflag) { 762 oerrno = errno; 763 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 764 if (*gateway) { 765 (void) printf(": gateway %s", gateway); 766 if (attempts > 1 && ret == 0 && af == AF_INET) 767 (void) printf(" (%s)", 768 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 769 } 770 if (ret == 0) { 771 (void) printf("\n"); 772 } else { 773 switch (oerrno) { 774 case ESRCH: 775 err = "not in table"; 776 break; 777 case EBUSY: 778 err = "entry in use"; 779 break; 780 case ENOBUFS: 781 err = "routing table overflow"; 782 break; 783 case EDQUOT: /* handle recursion avoidance in rt_setgate() */ 784 err = "gateway uses the same route"; 785 break; 786 default: 787 err = strerror(oerrno); 788 break; 789 } 790 (void) printf(": %s\n", err); 791 } 792 } 793 exit(ret != 0); 794 } 795 796 void 797 inet_makenetandmask(u_long net, register struct sockaddr_in *sin, u_long bits) 798 { 799 u_long addr, mask = 0; 800 register char *cp; 801 802 rtm_addrs |= RTA_NETMASK; 803 if (net == 0) 804 mask = addr = 0; 805 else if (net < 128) { 806 addr = net << IN_CLASSA_NSHIFT; 807 mask = IN_CLASSA_NET; 808 } else if (net < 65536) { 809 addr = net << IN_CLASSB_NSHIFT; 810 mask = IN_CLASSB_NET; 811 } else if (net < 16777216L) { 812 addr = net << IN_CLASSC_NSHIFT; 813 mask = IN_CLASSC_NET; 814 } else { 815 addr = net; 816 if ((addr & IN_CLASSA_HOST) == 0) 817 mask = IN_CLASSA_NET; 818 else if ((addr & IN_CLASSB_HOST) == 0) 819 mask = IN_CLASSB_NET; 820 else if ((addr & IN_CLASSC_HOST) == 0) 821 mask = IN_CLASSC_NET; 822 else 823 mask = -1; 824 } 825 if (bits) 826 mask = 0xffffffff << (32 - bits); 827 sin->sin_addr.s_addr = htonl(addr); 828 sin = &so_mask.sin; 829 sin->sin_addr.s_addr = htonl(mask); 830 sin->sin_len = 0; 831 sin->sin_family = 0; 832 cp = (char *)(&sin->sin_addr + 1); 833 while (*--cp == 0 && cp > (char *)sin) 834 ; 835 sin->sin_len = 1 + cp - (char *)sin; 836 } 837 838 #ifdef INET6 839 /* 840 * XXX the function may need more improvement... 841 */ 842 static int 843 inet6_makenetandmask(struct sockaddr_in6 *sin6, char *plen) 844 { 845 struct in6_addr in6; 846 847 if (!plen) { 848 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 849 sin6->sin6_scope_id == 0) { 850 plen = "0"; 851 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 852 /* aggregatable global unicast - RFC2374 */ 853 memset(&in6, 0, sizeof(in6)); 854 if (!memcmp(&sin6->sin6_addr.s6_addr[8], 855 &in6.s6_addr[8], 8)) 856 plen = "64"; 857 } 858 } 859 860 if (!plen || strcmp(plen, "128") == 0) 861 return 1; 862 rtm_addrs |= RTA_NETMASK; 863 (void)prefixlen(plen); 864 return 0; 865 } 866 #endif 867 868 /* 869 * Interpret an argument as a network address of some kind, 870 * returning 1 if a host address, 0 if a network address. 871 */ 872 int 873 getaddr(int which, char *s, struct hostent **hpp) 874 { 875 register sup su; 876 struct hostent *hp; 877 struct netent *np; 878 u_long val; 879 char *q; 880 int afamily; /* local copy of af so we can change it */ 881 882 if (af == 0) { 883 af = AF_INET; 884 aflen = sizeof(struct sockaddr_in); 885 } 886 afamily = af; 887 rtm_addrs |= which; 888 switch (which) { 889 case RTA_DST: 890 su = &so_dst; 891 break; 892 case RTA_GATEWAY: 893 su = &so_gate; 894 if (iflag) { 895 struct ifaddrs *ifap, *ifa; 896 struct sockaddr_dl *sdl = NULL; 897 898 if (getifaddrs(&ifap)) 899 err(1, "getifaddrs"); 900 901 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 902 if (ifa->ifa_addr->sa_family != AF_LINK) 903 continue; 904 905 if (strcmp(s, ifa->ifa_name)) 906 continue; 907 908 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 909 } 910 /* If we found it, then use it */ 911 if (sdl) { 912 /* 913 * Copy is safe since we have a 914 * sockaddr_storage member in sockunion{}. 915 * Note that we need to copy before calling 916 * freeifaddrs(). 917 */ 918 memcpy(&su->sdl, sdl, sdl->sdl_len); 919 } 920 freeifaddrs(ifap); 921 if (sdl) 922 return(1); 923 } 924 break; 925 case RTA_NETMASK: 926 su = &so_mask; 927 break; 928 case RTA_GENMASK: 929 su = &so_genmask; 930 break; 931 case RTA_IFP: 932 su = &so_ifp; 933 afamily = AF_LINK; 934 break; 935 case RTA_IFA: 936 su = &so_ifa; 937 break; 938 default: 939 usage("internal error"); 940 /*NOTREACHED*/ 941 } 942 su->sa.sa_len = aflen; 943 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 944 if (strcmp(s, "default") == 0) { 945 /* 946 * Default is net 0.0.0.0/0 947 */ 948 switch (which) { 949 case RTA_DST: 950 forcenet++; 951 /* bzero(su, sizeof(*su)); *//* for readability */ 952 (void) getaddr(RTA_NETMASK, s, 0); 953 break; 954 case RTA_NETMASK: 955 case RTA_GENMASK: 956 /* bzero(su, sizeof(*su)); *//* for readability */ 957 } 958 return (0); 959 } 960 switch (afamily) { 961 #ifdef INET6 962 case AF_INET6: 963 { 964 struct addrinfo hints, *res; 965 966 q = NULL; 967 if (which == RTA_DST && (q = strchr(s, '/')) != NULL) 968 *q = '\0'; 969 memset(&hints, 0, sizeof(hints)); 970 hints.ai_family = afamily; /*AF_INET6*/ 971 hints.ai_flags = AI_NUMERICHOST; 972 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 973 if (getaddrinfo(s, "0", &hints, &res) != 0 || 974 res->ai_family != AF_INET6 || 975 res->ai_addrlen != sizeof(su->sin6)) { 976 (void) fprintf(stderr, "%s: bad value\n", s); 977 exit(1); 978 } 979 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 980 #ifdef __KAME__ 981 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 982 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) && 983 su->sin6.sin6_scope_id) { 984 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 985 htons(su->sin6.sin6_scope_id); 986 su->sin6.sin6_scope_id = 0; 987 } 988 #endif 989 freeaddrinfo(res); 990 if (q != NULL) 991 *q++ = '/'; 992 if (which == RTA_DST) 993 return (inet6_makenetandmask(&su->sin6, q)); 994 return (0); 995 } 996 #endif /* INET6 */ 997 998 #ifdef NS 999 case AF_NS: 1000 if (which == RTA_DST) { 1001 extern short ns_bh[3]; 1002 struct sockaddr_ns *sms = &(so_mask.sns); 1003 memset(sms, 0, sizeof(*sms)); 1004 sms->sns_family = 0; 1005 sms->sns_len = 6; 1006 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1007 rtm_addrs |= RTA_NETMASK; 1008 } 1009 su->sns.sns_addr = ns_addr(s); 1010 return (!ns_nullhost(su->sns.sns_addr)); 1011 #endif 1012 1013 1014 case AF_APPLETALK: 1015 if (!atalk_aton(s, &su->sat.sat_addr)) 1016 errx(EX_NOHOST, "bad address: %s", s); 1017 rtm_addrs |= RTA_NETMASK; 1018 return(forcehost || su->sat.sat_addr.s_node != 0); 1019 1020 case AF_LINK: 1021 link_addr(s, &su->sdl); 1022 return (1); 1023 1024 1025 case PF_ROUTE: 1026 su->sa.sa_len = sizeof(*su); 1027 sockaddr(s, &su->sa); 1028 return (1); 1029 1030 case AF_INET: 1031 default: 1032 break; 1033 } 1034 1035 if (hpp == NULL) 1036 hpp = &hp; 1037 *hpp = NULL; 1038 1039 q = strchr(s,'/'); 1040 if (q && which == RTA_DST) { 1041 *q = '\0'; 1042 if ((val = inet_network(s)) != INADDR_NONE) { 1043 inet_makenetandmask( 1044 val, &su->sin, strtoul(q+1, 0, 0)); 1045 return (0); 1046 } 1047 *q = '/'; 1048 } 1049 if ((which != RTA_DST || forcenet == 0) && 1050 inet_aton(s, &su->sin.sin_addr)) { 1051 val = su->sin.sin_addr.s_addr; 1052 if (which != RTA_DST || 1053 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1054 return (1); 1055 else { 1056 val = ntohl(val); 1057 goto netdone; 1058 } 1059 } 1060 if (which == RTA_DST && forcehost == 0 && 1061 ((val = inet_network(s)) != INADDR_NONE || 1062 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) { 1063 netdone: 1064 inet_makenetandmask(val, &su->sin, 0); 1065 return (0); 1066 } 1067 hp = gethostbyname(s); 1068 if (hp) { 1069 *hpp = hp; 1070 su->sin.sin_family = hp->h_addrtype; 1071 memmove((char *)&su->sin.sin_addr, hp->h_addr, 1072 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1073 return (1); 1074 } 1075 errx(EX_NOHOST, "bad address: %s", s); 1076 } 1077 1078 int 1079 prefixlen(char *s) 1080 { 1081 int len = atoi(s), q, r; 1082 int max; 1083 char *p; 1084 1085 rtm_addrs |= RTA_NETMASK; 1086 switch (af) { 1087 #ifdef INET6 1088 case AF_INET6: 1089 max = 128; 1090 p = (char *)&so_mask.sin6.sin6_addr; 1091 break; 1092 #endif 1093 case AF_INET: 1094 max = 32; 1095 p = (char *)&so_mask.sin.sin_addr; 1096 break; 1097 default: 1098 (void) fprintf(stderr, "prefixlen not supported in this af\n"); 1099 exit(1); 1100 /*NOTREACHED*/ 1101 } 1102 1103 if (len < 0 || max < len) { 1104 (void) fprintf(stderr, "%s: bad value\n", s); 1105 exit(1); 1106 } 1107 1108 q = len >> 3; 1109 r = len & 7; 1110 so_mask.sa.sa_family = af; 1111 so_mask.sa.sa_len = aflen; 1112 memset((void *)p, 0, max / 8); 1113 if (q > 0) 1114 memset((void *)p, 0xff, q); 1115 if (r > 0) 1116 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1117 if (len == max) 1118 return -1; 1119 else 1120 return len; 1121 } 1122 1123 #ifdef NS 1124 short ns_nullh[] = {0,0,0}; 1125 short ns_bh[] = {-1,-1,-1}; 1126 1127 char * 1128 ns_print(struct sockaddr_ns *sns) 1129 { 1130 struct ns_addr work; 1131 union { union ns_net net_e; u_long long_e; } net; 1132 u_short port; 1133 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 1134 char *host = ""; 1135 register char *p; 1136 register u_char *q; 1137 1138 work = sns->sns_addr; 1139 port = ntohs(work.x_port); 1140 work.x_port = 0; 1141 net.net_e = work.x_net; 1142 if (ns_nullhost(work) && net.long_e == 0) { 1143 if (!port) 1144 return ("*.*"); 1145 (void) sprintf(mybuf, "*.%XH", port); 1146 return (mybuf); 1147 } 1148 1149 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1150 host = "any"; 1151 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1152 host = "*"; 1153 else { 1154 q = work.x_host.c_host; 1155 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 1156 q[0], q[1], q[2], q[3], q[4], q[5]); 1157 for (p = chost; *p == '0' && p < chost + 12; p++) 1158 /* void */; 1159 host = p; 1160 } 1161 if (port) 1162 (void) sprintf(cport, ".%XH", htons(port)); 1163 else 1164 *cport = 0; 1165 1166 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 1167 (unsigned long)ntohl(net.long_e), 1168 host, cport); 1169 return (mybuf); 1170 } 1171 #endif 1172 1173 void 1174 interfaces(void) 1175 { 1176 size_t needed; 1177 int mib[6]; 1178 char *buf, *lim, *next; 1179 register struct rt_msghdr *rtm; 1180 1181 mib[0] = CTL_NET; 1182 mib[1] = PF_ROUTE; 1183 mib[2] = 0; /* protocol */ 1184 mib[3] = 0; /* wildcard address family */ 1185 mib[4] = NET_RT_IFLIST; 1186 mib[5] = 0; /* no flags */ 1187 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1188 err(EX_OSERR, "route-sysctl-estimate"); 1189 if ((buf = malloc(needed)) == NULL) 1190 errx(EX_OSERR, "malloc failed"); 1191 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1192 err(EX_OSERR, "actual retrieval of interface table"); 1193 lim = buf + needed; 1194 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1195 rtm = (struct rt_msghdr *)next; 1196 print_rtmsg(rtm, rtm->rtm_msglen); 1197 } 1198 } 1199 1200 void 1201 monitor(void) 1202 { 1203 int n; 1204 char msg[2048]; 1205 1206 verbose = 1; 1207 if (debugonly) { 1208 interfaces(); 1209 exit(0); 1210 } 1211 for(;;) { 1212 time_t now; 1213 n = read(s, msg, 2048); 1214 now = time(NULL); 1215 (void) printf("\ngot message of size %d on %s", n, ctime(&now)); 1216 print_rtmsg((struct rt_msghdr *)msg, n); 1217 } 1218 } 1219 1220 struct { 1221 struct rt_msghdr m_rtm; 1222 char m_space[512]; 1223 } m_rtmsg; 1224 1225 int 1226 rtmsg(int cmd, int flags) 1227 { 1228 static int seq; 1229 int rlen; 1230 register char *cp = m_rtmsg.m_space; 1231 register int l; 1232 1233 #define NEXTADDR(w, u) \ 1234 if (rtm_addrs & (w)) {\ 1235 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1236 if (verbose) sodump(&(u),"u");\ 1237 } 1238 1239 errno = 0; 1240 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1241 if (cmd == 'a') 1242 cmd = RTM_ADD; 1243 else if (cmd == 'c') 1244 cmd = RTM_CHANGE; 1245 else if (cmd == 'g') { 1246 cmd = RTM_GET; 1247 if (so_ifp.sa.sa_family == 0) { 1248 so_ifp.sa.sa_family = AF_LINK; 1249 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1250 rtm_addrs |= RTA_IFP; 1251 } 1252 } else 1253 cmd = RTM_DELETE; 1254 #define rtm m_rtmsg.m_rtm 1255 rtm.rtm_type = cmd; 1256 rtm.rtm_flags = flags; 1257 rtm.rtm_version = RTM_VERSION; 1258 rtm.rtm_seq = ++seq; 1259 rtm.rtm_addrs = rtm_addrs; 1260 rtm.rtm_rmx = rt_metrics; 1261 rtm.rtm_inits = rtm_inits; 1262 1263 if (rtm_addrs & RTA_NETMASK) 1264 mask_addr(); 1265 NEXTADDR(RTA_DST, so_dst); 1266 NEXTADDR(RTA_GATEWAY, so_gate); 1267 NEXTADDR(RTA_NETMASK, so_mask); 1268 NEXTADDR(RTA_GENMASK, so_genmask); 1269 NEXTADDR(RTA_IFP, so_ifp); 1270 NEXTADDR(RTA_IFA, so_ifa); 1271 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1272 if (verbose) 1273 print_rtmsg(&rtm, l); 1274 if (debugonly) 1275 return (0); 1276 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1277 warn("writing to routing socket"); 1278 return (-1); 1279 } 1280 if (cmd == RTM_GET) { 1281 do { 1282 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1283 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1284 if (l < 0) 1285 warn("read from routing socket"); 1286 else 1287 print_getmsg(&rtm, l); 1288 } 1289 #undef rtm 1290 return (0); 1291 } 1292 1293 void 1294 mask_addr(void) 1295 { 1296 int olen = so_mask.sa.sa_len; 1297 register char *cp1 = olen + (char *)&so_mask, *cp2; 1298 1299 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1300 if (*--cp1 != 0) { 1301 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1302 break; 1303 } 1304 if ((rtm_addrs & RTA_DST) == 0) 1305 return; 1306 switch (so_dst.sa.sa_family) { 1307 #ifdef NS 1308 case AF_NS: 1309 #endif 1310 case AF_INET: 1311 #ifdef INET6 1312 case AF_INET6: 1313 #endif 1314 case AF_APPLETALK: 1315 case 0: 1316 return; 1317 } 1318 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1319 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1320 while (cp2 > cp1) 1321 *--cp2 = 0; 1322 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1323 while (cp1 > so_dst.sa.sa_data) 1324 *--cp1 &= *--cp2; 1325 } 1326 1327 char *msgtypes[] = { 1328 "", 1329 "RTM_ADD: Add Route", 1330 "RTM_DELETE: Delete Route", 1331 "RTM_CHANGE: Change Metrics or flags", 1332 "RTM_GET: Report Metrics", 1333 "RTM_LOSING: Kernel Suspects Partitioning", 1334 "RTM_REDIRECT: Told to use different route", 1335 "RTM_MISS: Lookup failed on this address", 1336 "RTM_LOCK: fix specified metrics", 1337 "RTM_OLDADD: caused by SIOCADDRT", 1338 "RTM_OLDDEL: caused by SIOCDELRT", 1339 "RTM_RESOLVE: Route created by cloning", 1340 "RTM_NEWADDR: address being added to iface", 1341 "RTM_DELADDR: address being removed from iface", 1342 "RTM_IFINFO: iface status change", 1343 "RTM_NEWMADDR: new multicast group membership on iface", 1344 "RTM_DELMADDR: multicast group membership removed from iface", 1345 "RTM_IFANNOUNCE: interface arrival/departure", 1346 0, 1347 }; 1348 1349 char metricnames[] = 1350 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1351 "\1mtu"; 1352 char routeflags[] = 1353 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1354 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1355 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1356 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1357 char ifnetflags[] = 1358 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1359 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1360 "\017LINK2\020MULTICAST"; 1361 char addrnames[] = 1362 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1363 1364 void 1365 print_rtmsg(register struct rt_msghdr *rtm, int msglen) 1366 { 1367 struct if_msghdr *ifm; 1368 struct ifa_msghdr *ifam; 1369 #ifdef RTM_NEWMADDR 1370 struct ifma_msghdr *ifmam; 1371 #endif 1372 struct if_announcemsghdr *ifan; 1373 1374 if (verbose == 0) 1375 return; 1376 if (rtm->rtm_version != RTM_VERSION) { 1377 (void) printf("routing message version %d not understood\n", 1378 rtm->rtm_version); 1379 return; 1380 } 1381 if (msgtypes[rtm->rtm_type] != NULL) 1382 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1383 else 1384 (void)printf("#%d: ", rtm->rtm_type); 1385 (void)printf("len %d, ", rtm->rtm_msglen); 1386 switch (rtm->rtm_type) { 1387 case RTM_IFINFO: 1388 ifm = (struct if_msghdr *)rtm; 1389 (void) printf("if# %d, flags:", ifm->ifm_index); 1390 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1391 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1392 break; 1393 case RTM_NEWADDR: 1394 case RTM_DELADDR: 1395 ifam = (struct ifa_msghdr *)rtm; 1396 (void) printf("metric %d, flags:", ifam->ifam_metric); 1397 bprintf(stdout, ifam->ifam_flags, routeflags); 1398 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1399 break; 1400 #ifdef RTM_NEWMADDR 1401 case RTM_NEWMADDR: 1402 case RTM_DELMADDR: 1403 ifmam = (struct ifma_msghdr *)rtm; 1404 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1405 break; 1406 #endif 1407 case RTM_IFANNOUNCE: 1408 ifan = (struct if_announcemsghdr *)rtm; 1409 (void) printf("if# %d, what: ", ifan->ifan_index); 1410 switch (ifan->ifan_what) { 1411 case IFAN_ARRIVAL: 1412 printf("arrival"); 1413 break; 1414 case IFAN_DEPARTURE: 1415 printf("departure"); 1416 break; 1417 default: 1418 printf("#%d", ifan->ifan_what); 1419 break; 1420 } 1421 printf("\n"); 1422 break; 1423 1424 default: 1425 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1426 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1427 bprintf(stdout, rtm->rtm_flags, routeflags); 1428 pmsg_common(rtm); 1429 } 1430 } 1431 1432 void 1433 print_getmsg(register struct rt_msghdr *rtm, int msglen) 1434 { 1435 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1436 struct sockaddr_dl *ifp = NULL; 1437 register struct sockaddr *sa; 1438 register char *cp; 1439 register int i; 1440 1441 (void) printf(" route to: %s\n", routename(&so_dst)); 1442 if (rtm->rtm_version != RTM_VERSION) { 1443 warnx("routing message version %d not understood", 1444 rtm->rtm_version); 1445 return; 1446 } 1447 if (rtm->rtm_msglen > msglen) { 1448 warnx("message length mismatch, in packet %d, returned %d", 1449 rtm->rtm_msglen, msglen); 1450 } 1451 if (rtm->rtm_errno) { 1452 errno = rtm->rtm_errno; 1453 warn("message indicates error %d", errno); 1454 return; 1455 } 1456 cp = ((char *)(rtm + 1)); 1457 if (rtm->rtm_addrs) 1458 for (i = 1; i; i <<= 1) 1459 if (i & rtm->rtm_addrs) { 1460 sa = (struct sockaddr *)cp; 1461 switch (i) { 1462 case RTA_DST: 1463 dst = sa; 1464 break; 1465 case RTA_GATEWAY: 1466 gate = sa; 1467 break; 1468 case RTA_NETMASK: 1469 mask = sa; 1470 break; 1471 case RTA_IFP: 1472 if (sa->sa_family == AF_LINK && 1473 ((struct sockaddr_dl *)sa)->sdl_nlen) 1474 ifp = (struct sockaddr_dl *)sa; 1475 break; 1476 } 1477 ADVANCE(cp, sa); 1478 } 1479 if (dst && mask) 1480 mask->sa_family = dst->sa_family; /* XXX */ 1481 if (dst) 1482 (void)printf("destination: %s\n", routename(dst)); 1483 if (mask) { 1484 int savenflag = nflag; 1485 1486 nflag = 1; 1487 (void)printf(" mask: %s\n", routename(mask)); 1488 nflag = savenflag; 1489 } 1490 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1491 (void)printf(" gateway: %s\n", routename(gate)); 1492 if (ifp) 1493 (void)printf(" interface: %.*s\n", 1494 ifp->sdl_nlen, ifp->sdl_data); 1495 (void)printf(" flags: "); 1496 bprintf(stdout, rtm->rtm_flags, routeflags); 1497 1498 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1499 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1500 1501 (void) printf("\n%s\n", "\ 1502 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1503 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1504 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1505 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1506 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1507 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1508 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1509 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1510 if (rtm->rtm_rmx.rmx_expire) 1511 rtm->rtm_rmx.rmx_expire -= time(0); 1512 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1513 #undef lock 1514 #undef msec 1515 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1516 if (verbose) 1517 pmsg_common(rtm); 1518 else if (rtm->rtm_addrs &~ RTA_IGN) { 1519 (void) printf("sockaddrs: "); 1520 bprintf(stdout, rtm->rtm_addrs, addrnames); 1521 putchar('\n'); 1522 } 1523 #undef RTA_IGN 1524 } 1525 1526 void 1527 pmsg_common(register struct rt_msghdr *rtm) 1528 { 1529 (void) printf("\nlocks: "); 1530 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1531 (void) printf(" inits: "); 1532 bprintf(stdout, rtm->rtm_inits, metricnames); 1533 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1534 } 1535 1536 void 1537 pmsg_addrs(char *cp, int addrs) 1538 { 1539 register struct sockaddr *sa; 1540 int i; 1541 1542 if (addrs == 0) { 1543 (void) putchar('\n'); 1544 return; 1545 } 1546 (void) printf("\nsockaddrs: "); 1547 bprintf(stdout, addrs, addrnames); 1548 (void) putchar('\n'); 1549 for (i = 1; i; i <<= 1) 1550 if (i & addrs) { 1551 sa = (struct sockaddr *)cp; 1552 (void) printf(" %s", routename(sa)); 1553 ADVANCE(cp, sa); 1554 } 1555 (void) putchar('\n'); 1556 (void) fflush(stdout); 1557 } 1558 1559 void 1560 bprintf(register FILE *fp, register int b, register u_char *s) 1561 { 1562 register int i; 1563 int gotsome = 0; 1564 1565 if (b == 0) 1566 return; 1567 while ((i = *s++) != 0) { 1568 if (b & (1 << (i-1))) { 1569 if (gotsome == 0) 1570 i = '<'; 1571 else 1572 i = ','; 1573 (void) putc(i, fp); 1574 gotsome = 1; 1575 for (; (i = *s) > 32; s++) 1576 (void) putc(i, fp); 1577 } else 1578 while (*s > 32) 1579 s++; 1580 } 1581 if (gotsome) 1582 (void) putc('>', fp); 1583 } 1584 1585 int 1586 keyword(char *cp) 1587 { 1588 register struct keytab *kt = keywords; 1589 1590 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1591 kt++; 1592 return kt->kt_i; 1593 } 1594 1595 void 1596 sodump(register sup su, char *which) 1597 { 1598 switch (su->sa.sa_family) { 1599 case AF_LINK: 1600 (void) printf("%s: link %s; ", 1601 which, link_ntoa(&su->sdl)); 1602 break; 1603 case AF_INET: 1604 (void) printf("%s: inet %s; ", 1605 which, inet_ntoa(su->sin.sin_addr)); 1606 break; 1607 case AF_APPLETALK: 1608 (void) printf("%s: atalk %s; ", 1609 which, atalk_ntoa(su->sat.sat_addr)); 1610 break; 1611 #ifdef NS 1612 case AF_NS: 1613 (void) printf("%s: xns %s; ", 1614 which, ns_ntoa(su->sns.sns_addr)); 1615 break; 1616 #endif 1617 } 1618 (void) fflush(stdout); 1619 } 1620 1621 /* States*/ 1622 #define VIRGIN 0 1623 #define GOTONE 1 1624 #define GOTTWO 2 1625 /* Inputs */ 1626 #define DIGIT (4*0) 1627 #define END (4*1) 1628 #define DELIM (4*2) 1629 1630 void 1631 sockaddr(register char *addr, register struct sockaddr *sa) 1632 { 1633 register char *cp = (char *)sa; 1634 int size = sa->sa_len; 1635 char *cplim = cp + size; 1636 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1637 1638 memset(cp, 0, size); 1639 cp++; 1640 do { 1641 if ((*addr >= '0') && (*addr <= '9')) { 1642 new = *addr - '0'; 1643 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1644 new = *addr - 'a' + 10; 1645 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1646 new = *addr - 'A' + 10; 1647 } else if (*addr == 0) 1648 state |= END; 1649 else 1650 state |= DELIM; 1651 addr++; 1652 switch (state /* | INPUT */) { 1653 case GOTTWO | DIGIT: 1654 *cp++ = byte; /*FALLTHROUGH*/ 1655 case VIRGIN | DIGIT: 1656 state = GOTONE; byte = new; continue; 1657 case GOTONE | DIGIT: 1658 state = GOTTWO; byte = new + (byte << 4); continue; 1659 default: /* | DELIM */ 1660 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1661 case GOTONE | END: 1662 case GOTTWO | END: 1663 *cp++ = byte; /* FALLTHROUGH */ 1664 case VIRGIN | END: 1665 break; 1666 } 1667 break; 1668 } while (cp < cplim); 1669 sa->sa_len = cp - (char *)sa; 1670 } 1671 1672 int 1673 atalk_aton(const char *text, struct at_addr *addr) 1674 { 1675 u_int net, node; 1676 1677 if (sscanf(text, "%u.%u", &net, &node) != 2 1678 || net > 0xffff || node > 0xff) 1679 return(0); 1680 addr->s_net = htons(net); 1681 addr->s_node = node; 1682 return(1); 1683 } 1684 1685 char * 1686 atalk_ntoa(struct at_addr at) 1687 { 1688 static char buf[20]; 1689 1690 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1691 return(buf); 1692 } 1693