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 #include <arpa/inet.h> 62 #include <netdb.h> 63 64 #include <ctype.h> 65 #include <err.h> 66 #include <errno.h> 67 #include <paths.h> 68 #include <stdio.h> 69 #include <stdlib.h> 70 #include <string.h> 71 #include <sysexits.h> 72 #include <unistd.h> 73 #include <ifaddrs.h> 74 75 struct keytab { 76 char *kt_cp; 77 int kt_i; 78 } keywords[] = { 79 #include "keywords.h" 80 {0, 0} 81 }; 82 83 struct ortentry route; 84 union sockunion { 85 struct sockaddr sa; 86 struct sockaddr_in sin; 87 #ifdef INET6 88 struct sockaddr_in6 sin6; 89 #endif 90 struct sockaddr_at sat; 91 struct sockaddr_dl sdl; 92 struct sockaddr_inarp sinarp; 93 struct sockaddr_storage ss; /* added to avoid memory overrun */ 94 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 95 96 typedef union sockunion *sup; 97 int pid, rtm_addrs; 98 int s; 99 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 100 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 101 int locking, lockrest, debugonly; 102 struct rt_metrics rt_metrics; 103 u_long rtm_inits; 104 uid_t uid; 105 int atalk_aton(const char *, struct at_addr *); 106 char *atalk_ntoa(struct at_addr); 107 const char *routename(), *netname(); 108 void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 109 void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 110 #ifdef INET6 111 static int inet6_makenetandmask(struct sockaddr_in6 *, char *); 112 #endif 113 int getaddr(), rtmsg(), x25_makemask(); 114 int prefixlen(); 115 extern char *iso_ntoa(); 116 117 void usage(const char *) __dead2; 118 119 void 120 usage(cp) 121 const char *cp; 122 { 123 if (cp) 124 warnx("bad keyword: %s", cp); 125 (void) fprintf(stderr, 126 "usage: route [-dnqtv] command [[modifiers] args]\n"); 127 exit(EX_USAGE); 128 /* NOTREACHED */ 129 } 130 131 #define ROUNDUP(a) \ 132 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 133 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 134 135 int 136 main(argc, argv) 137 int argc; 138 char **argv; 139 { 140 int ch; 141 142 if (argc < 2) 143 usage((char *)NULL); 144 145 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 146 switch(ch) { 147 case 'n': 148 nflag = 1; 149 break; 150 case 'q': 151 qflag = 1; 152 break; 153 case 'v': 154 verbose = 1; 155 break; 156 case 't': 157 tflag = 1; 158 break; 159 case 'd': 160 debugonly = 1; 161 break; 162 case '?': 163 default: 164 usage((char *)NULL); 165 } 166 argc -= optind; 167 argv += optind; 168 169 pid = getpid(); 170 uid = geteuid(); 171 if (tflag) 172 s = open(_PATH_DEVNULL, O_WRONLY, 0); 173 else 174 s = socket(PF_ROUTE, SOCK_RAW, 0); 175 if (s < 0) 176 err(EX_OSERR, "socket"); 177 if (*argv) 178 switch (keyword(*argv)) { 179 case K_GET: 180 uid = 0; 181 /* FALLTHROUGH */ 182 183 case K_CHANGE: 184 case K_ADD: 185 case K_DELETE: 186 newroute(argc, argv); 187 /* NOTREACHED */ 188 189 case K_MONITOR: 190 monitor(); 191 /* NOTREACHED */ 192 193 case K_FLUSH: 194 flushroutes(argc, argv); 195 exit(0); 196 /* NOTREACHED */ 197 } 198 usage(*argv); 199 /* NOTREACHED */ 200 } 201 202 /* 203 * Purge all entries in the routing tables not 204 * associated with network interfaces. 205 */ 206 void 207 flushroutes(argc, argv) 208 int argc; 209 char *argv[]; 210 { 211 size_t needed; 212 int mib[6], rlen, seqno; 213 char *buf, *next, *lim; 214 struct rt_msghdr *rtm; 215 216 if (uid && !debugonly) { 217 errx(EX_NOPERM, "must be root to alter routing table"); 218 } 219 shutdown(s, 0); /* Don't want to read back our messages */ 220 if (argc > 1) { 221 argv++; 222 if (argc == 2 && **argv == '-') 223 switch (keyword(*argv + 1)) { 224 case K_INET: 225 af = AF_INET; 226 break; 227 #ifdef INET6 228 case K_INET6: 229 af = AF_INET6; 230 break; 231 #endif 232 case K_ATALK: 233 af = AF_APPLETALK; 234 break; 235 case K_LINK: 236 af = AF_LINK; 237 break; 238 default: 239 goto bad; 240 } else 241 bad: usage(*argv); 242 } 243 mib[0] = CTL_NET; 244 mib[1] = PF_ROUTE; 245 mib[2] = 0; /* protocol */ 246 mib[3] = 0; /* wildcard address family */ 247 mib[4] = NET_RT_DUMP; 248 mib[5] = 0; /* no flags */ 249 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 250 err(EX_OSERR, "route-sysctl-estimate"); 251 if ((buf = malloc(needed)) == NULL) 252 errx(EX_OSERR, "malloc failed"); 253 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 254 err(EX_OSERR, "route-sysctl-get"); 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 < (int)rtm->rtm_msglen) { 277 warn("write to routing socket"); 278 (void) printf("got only %d for rlen\n", rlen); 279 break; 280 } 281 seqno++; 282 if (qflag) 283 continue; 284 if (verbose) 285 print_rtmsg(rtm, rlen); 286 else { 287 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 288 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 289 routename(sa) : netname(sa)); 290 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 291 (void) printf("%-20.20s ", routename(sa)); 292 (void) printf("done\n"); 293 } 294 } 295 } 296 297 const char * 298 routename(sa) 299 struct sockaddr *sa; 300 { 301 char *cp; 302 static char line[MAXHOSTNAMELEN + 1]; 303 struct hostent *hp; 304 static char domain[MAXHOSTNAMELEN + 1]; 305 static int first = 1, n; 306 307 if (first) { 308 first = 0; 309 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 310 (cp = strchr(domain, '.'))) { 311 domain[MAXHOSTNAMELEN] = '\0'; 312 (void) strcpy(domain, cp + 1); 313 } else 314 domain[0] = 0; 315 } 316 317 if (sa->sa_len == 0) 318 strcpy(line, "default"); 319 else switch (sa->sa_family) { 320 321 case AF_INET: 322 { struct in_addr in; 323 in = ((struct sockaddr_in *)sa)->sin_addr; 324 325 cp = 0; 326 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 327 cp = "default"; 328 if (cp == 0 && !nflag) { 329 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 330 AF_INET); 331 if (hp) { 332 if ((cp = strchr(hp->h_name, '.')) && 333 !strcmp(cp + 1, domain)) 334 *cp = 0; 335 cp = hp->h_name; 336 } 337 } 338 if (cp) { 339 strncpy(line, cp, sizeof(line) - 1); 340 line[sizeof(line) - 1] = '\0'; 341 } else 342 (void) sprintf(line, "%s", inet_ntoa(in)); 343 break; 344 } 345 346 #ifdef INET6 347 case AF_INET6: 348 { 349 struct sockaddr_in6 sin6; /* use static var for safety */ 350 int niflags = 0; 351 #ifdef NI_WITHSCOPEID 352 niflags = NI_WITHSCOPEID; 353 #endif 354 355 memset(&sin6, 0, sizeof(sin6)); 356 memcpy(&sin6, sa, sa->sa_len); 357 sin6.sin6_len = sizeof(struct sockaddr_in6); 358 sin6.sin6_family = AF_INET6; 359 #ifdef __KAME__ 360 if (sa->sa_len == sizeof(struct sockaddr_in6) && 361 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 362 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 363 sin6.sin6_scope_id == 0) { 364 sin6.sin6_scope_id = 365 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 366 sin6.sin6_addr.s6_addr[2] = 0; 367 sin6.sin6_addr.s6_addr[3] = 0; 368 } 369 #endif 370 if (nflag) 371 niflags |= NI_NUMERICHOST; 372 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 373 line, sizeof(line), NULL, 0, niflags) != 0) 374 strncpy(line, "invalid", sizeof(line)); 375 376 return(line); 377 } 378 #endif 379 380 case AF_APPLETALK: 381 (void) snprintf(line, sizeof(line), "atalk %s", 382 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 383 break; 384 385 case AF_LINK: 386 return (link_ntoa((struct sockaddr_dl *)sa)); 387 388 default: 389 { u_short *s = (u_short *)sa; 390 u_short *slim = s + ((sa->sa_len + 1) >> 1); 391 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 392 char *cpe = line + sizeof(line); 393 394 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 395 if ((n = snprintf(cp, cpe - cp, " %x", *s)) > 0) 396 cp += n; 397 else 398 *cp = '\0'; 399 break; 400 } 401 } 402 return (line); 403 } 404 405 /* 406 * Return the name of the network whose address is given. 407 * The address is assumed to be that of a net or subnet, not a host. 408 */ 409 const char * 410 netname(sa) 411 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 u_long i; 418 int n, subnetshift; 419 420 switch (sa->sa_family) { 421 422 case AF_INET: 423 { struct in_addr in; 424 in = ((struct sockaddr_in *)sa)->sin_addr; 425 426 i = in.s_addr = ntohl(in.s_addr); 427 if (in.s_addr == 0) 428 cp = "default"; 429 else if (!nflag) { 430 if (IN_CLASSA(i)) { 431 mask = IN_CLASSA_NET; 432 subnetshift = 8; 433 } else if (IN_CLASSB(i)) { 434 mask = IN_CLASSB_NET; 435 subnetshift = 8; 436 } else { 437 mask = IN_CLASSC_NET; 438 subnetshift = 4; 439 } 440 /* 441 * If there are more bits than the standard mask 442 * would suggest, subnets must be in use. 443 * Guess at the subnet mask, assuming reasonable 444 * width subnet fields. 445 */ 446 while (in.s_addr &~ mask) 447 mask = (long)mask >> subnetshift; 448 net = in.s_addr & mask; 449 while ((mask & 1) == 0) 450 mask >>= 1, net >>= 1; 451 np = getnetbyaddr(net, AF_INET); 452 if (np) 453 cp = np->n_name; 454 } 455 #define C(x) (unsigned)((x) & 0xff) 456 if (cp) 457 strncpy(line, cp, sizeof(line)); 458 else if ((in.s_addr & 0xffffff) == 0) 459 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 460 else if ((in.s_addr & 0xffff) == 0) 461 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 462 C(in.s_addr >> 16)); 463 else if ((in.s_addr & 0xff) == 0) 464 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 465 C(in.s_addr >> 16), C(in.s_addr >> 8)); 466 else 467 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 468 C(in.s_addr >> 16), C(in.s_addr >> 8), 469 C(in.s_addr)); 470 #undef C 471 break; 472 } 473 474 #ifdef INET6 475 case AF_INET6: 476 { 477 struct sockaddr_in6 sin6; /* use static var for safety */ 478 int niflags = 0; 479 #ifdef NI_WITHSCOPEID 480 niflags = NI_WITHSCOPEID; 481 #endif 482 483 memset(&sin6, 0, sizeof(sin6)); 484 memcpy(&sin6, sa, sa->sa_len); 485 sin6.sin6_len = sizeof(struct sockaddr_in6); 486 sin6.sin6_family = AF_INET6; 487 #ifdef __KAME__ 488 if (sa->sa_len == sizeof(struct sockaddr_in6) && 489 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 490 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 491 sin6.sin6_scope_id == 0) { 492 sin6.sin6_scope_id = 493 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 494 sin6.sin6_addr.s6_addr[2] = 0; 495 sin6.sin6_addr.s6_addr[3] = 0; 496 } 497 #endif 498 if (nflag) 499 niflags |= NI_NUMERICHOST; 500 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 501 line, sizeof(line), NULL, 0, niflags) != 0) 502 strncpy(line, "invalid", sizeof(line)); 503 504 return(line); 505 } 506 #endif 507 508 case AF_APPLETALK: 509 (void) snprintf(line, sizeof(line), "atalk %s", 510 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 511 break; 512 513 case AF_LINK: 514 return (link_ntoa((struct sockaddr_dl *)sa)); 515 516 517 default: 518 { u_short *s = (u_short *)sa->sa_data; 519 u_short *slim = s + ((sa->sa_len + 1)>>1); 520 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 521 char *cpe = line + sizeof(line); 522 523 while (s < slim && cp < cpe) 524 if ((n = snprintf(cp, cpe - cp, " %x", *s++)) > 0) 525 cp += n; 526 else 527 *cp = '\0'; 528 break; 529 } 530 } 531 return (line); 532 } 533 534 void 535 set_metric(value, key) 536 char *value; 537 int key; 538 { 539 int flag = 0; 540 u_long noval, *valp = &noval; 541 542 switch (key) { 543 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 544 caseof(K_MTU, RTV_MTU, rmx_mtu); 545 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 546 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 547 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 548 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 549 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 550 caseof(K_RTT, RTV_RTT, rmx_rtt); 551 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 552 } 553 rtm_inits |= flag; 554 if (lockrest || locking) 555 rt_metrics.rmx_locks |= flag; 556 if (locking) 557 locking = 0; 558 *valp = atoi(value); 559 } 560 561 void 562 newroute(argc, argv) 563 int argc; 564 char **argv; 565 { 566 char *cmd, *dest = "", *gateway = "", *err; 567 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC; 568 int key; 569 struct hostent *hp = 0; 570 571 if (uid) { 572 errx(EX_NOPERM, "must be root to alter routing table"); 573 } 574 cmd = argv[0]; 575 if (*cmd != 'g') 576 shutdown(s, 0); /* Don't want to read back our messages */ 577 while (--argc > 0) { 578 if (**(++argv)== '-') { 579 switch (key = keyword(1 + *argv)) { 580 case K_LINK: 581 af = AF_LINK; 582 aflen = sizeof(struct sockaddr_dl); 583 break; 584 case K_INET: 585 af = AF_INET; 586 aflen = sizeof(struct sockaddr_in); 587 break; 588 #ifdef INET6 589 case K_INET6: 590 af = AF_INET6; 591 aflen = sizeof(struct sockaddr_in6); 592 break; 593 #endif 594 case K_ATALK: 595 af = AF_APPLETALK; 596 aflen = sizeof(struct sockaddr_at); 597 break; 598 case K_SA: 599 af = PF_ROUTE; 600 aflen = sizeof(union sockunion); 601 break; 602 case K_IFACE: 603 case K_INTERFACE: 604 iflag++; 605 break; 606 case K_NOSTATIC: 607 flags &= ~RTF_STATIC; 608 break; 609 case K_LLINFO: 610 flags |= RTF_LLINFO; 611 break; 612 case K_LOCK: 613 locking = 1; 614 break; 615 case K_LOCKREST: 616 lockrest = 1; 617 break; 618 case K_HOST: 619 forcehost++; 620 break; 621 case K_REJECT: 622 flags |= RTF_REJECT; 623 break; 624 case K_BLACKHOLE: 625 flags |= RTF_BLACKHOLE; 626 break; 627 case K_PROTO1: 628 flags |= RTF_PROTO1; 629 break; 630 case K_PROTO2: 631 flags |= RTF_PROTO2; 632 break; 633 case K_PROXY: 634 proxy = 1; 635 break; 636 case K_CLONING: 637 flags |= RTF_CLONING; 638 break; 639 case K_XRESOLVE: 640 flags |= RTF_XRESOLVE; 641 break; 642 case K_STATIC: 643 flags |= RTF_STATIC; 644 break; 645 case K_IFA: 646 if (!--argc) 647 usage((char *)NULL); 648 (void) getaddr(RTA_IFA, *++argv, 0); 649 break; 650 case K_IFP: 651 if (!--argc) 652 usage((char *)NULL); 653 (void) getaddr(RTA_IFP, *++argv, 0); 654 break; 655 case K_GENMASK: 656 if (!--argc) 657 usage((char *)NULL); 658 (void) getaddr(RTA_GENMASK, *++argv, 0); 659 break; 660 case K_GATEWAY: 661 if (!--argc) 662 usage((char *)NULL); 663 (void) getaddr(RTA_GATEWAY, *++argv, 0); 664 break; 665 case K_DST: 666 if (!--argc) 667 usage((char *)NULL); 668 ishost = getaddr(RTA_DST, *++argv, &hp); 669 dest = *argv; 670 break; 671 case K_NETMASK: 672 if (!--argc) 673 usage((char *)NULL); 674 (void) getaddr(RTA_NETMASK, *++argv, 0); 675 /* FALLTHROUGH */ 676 case K_NET: 677 forcenet++; 678 break; 679 case K_PREFIXLEN: 680 if (!--argc) 681 usage((char *)NULL); 682 if (prefixlen(*++argv) == -1) { 683 forcenet = 0; 684 ishost = 1; 685 } else { 686 forcenet = 1; 687 ishost = 0; 688 } 689 break; 690 case K_MTU: 691 case K_HOPCOUNT: 692 case K_EXPIRE: 693 case K_RECVPIPE: 694 case K_SENDPIPE: 695 case K_SSTHRESH: 696 case K_RTT: 697 case K_RTTVAR: 698 if (!--argc) 699 usage((char *)NULL); 700 set_metric(*++argv, key); 701 break; 702 default: 703 usage(1+*argv); 704 } 705 } else { 706 if ((rtm_addrs & RTA_DST) == 0) { 707 dest = *argv; 708 ishost = getaddr(RTA_DST, *argv, &hp); 709 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 710 gateway = *argv; 711 (void) getaddr(RTA_GATEWAY, *argv, &hp); 712 } else { 713 (void) getaddr(RTA_NETMASK, *argv, 0); 714 forcenet = 1; 715 } 716 } 717 } 718 if (forcehost) { 719 ishost = 1; 720 #ifdef INET6 721 if (af == AF_INET6) { 722 rtm_addrs &= ~RTA_NETMASK; 723 memset((void *)&so_mask, 0, sizeof(so_mask)); 724 } 725 #endif 726 } 727 if (forcenet) 728 ishost = 0; 729 flags |= RTF_UP; 730 if (ishost) 731 flags |= RTF_HOST; 732 if (iflag == 0) 733 flags |= RTF_GATEWAY; 734 if (proxy) { 735 so_dst.sinarp.sin_other = SIN_PROXY; 736 flags |= RTF_ANNOUNCE; 737 } 738 for (attempts = 1; ; attempts++) { 739 errno = 0; 740 if ((ret = rtmsg(*cmd, flags)) == 0) 741 break; 742 if (errno != ENETUNREACH && errno != ESRCH) 743 break; 744 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 745 hp->h_addr_list++; 746 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 747 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 748 } else 749 break; 750 } 751 if (*cmd == 'g') 752 exit(0); 753 if (!qflag) { 754 oerrno = errno; 755 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 756 if (*gateway) { 757 (void) printf(": gateway %s", gateway); 758 if (attempts > 1 && ret == 0 && af == AF_INET) 759 (void) printf(" (%s)", 760 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 761 } 762 if (ret == 0) { 763 (void) printf("\n"); 764 } else { 765 switch (oerrno) { 766 case ESRCH: 767 err = "not in table"; 768 break; 769 case EBUSY: 770 err = "entry in use"; 771 break; 772 case ENOBUFS: 773 err = "routing table overflow"; 774 break; 775 case EDQUOT: /* handle recursion avoidance in rt_setgate() */ 776 err = "gateway uses the same route"; 777 break; 778 default: 779 err = strerror(oerrno); 780 break; 781 } 782 (void) printf(": %s\n", err); 783 } 784 } 785 exit(ret != 0); 786 } 787 788 void 789 inet_makenetandmask(net, sin, bits) 790 u_long net, bits; 791 struct sockaddr_in *sin; 792 { 793 u_long addr, mask = 0; 794 char *cp; 795 796 rtm_addrs |= RTA_NETMASK; 797 if (net == 0) 798 mask = addr = 0; 799 else if (net < 128) { 800 addr = net << IN_CLASSA_NSHIFT; 801 mask = IN_CLASSA_NET; 802 } else if (net < 65536) { 803 addr = net << IN_CLASSB_NSHIFT; 804 mask = IN_CLASSB_NET; 805 } else if (net < 16777216L) { 806 addr = net << IN_CLASSC_NSHIFT; 807 mask = IN_CLASSC_NET; 808 } else { 809 addr = net; 810 if ((addr & IN_CLASSA_HOST) == 0) 811 mask = IN_CLASSA_NET; 812 else if ((addr & IN_CLASSB_HOST) == 0) 813 mask = IN_CLASSB_NET; 814 else if ((addr & IN_CLASSC_HOST) == 0) 815 mask = IN_CLASSC_NET; 816 else 817 mask = -1; 818 } 819 if (bits) 820 mask = 0xffffffff << (32 - bits); 821 sin->sin_addr.s_addr = htonl(addr); 822 sin = &so_mask.sin; 823 sin->sin_addr.s_addr = htonl(mask); 824 sin->sin_len = 0; 825 sin->sin_family = 0; 826 cp = (char *)(&sin->sin_addr + 1); 827 while (*--cp == 0 && cp > (char *)sin) 828 ; 829 sin->sin_len = 1 + cp - (char *)sin; 830 } 831 832 #ifdef INET6 833 /* 834 * XXX the function may need more improvement... 835 */ 836 static int 837 inet6_makenetandmask(sin6, plen) 838 struct sockaddr_in6 *sin6; 839 char *plen; 840 { 841 struct in6_addr in6; 842 843 if (!plen) { 844 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 845 sin6->sin6_scope_id == 0) { 846 plen = "0"; 847 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 848 /* aggregatable global unicast - RFC2374 */ 849 memset(&in6, 0, sizeof(in6)); 850 if (!memcmp(&sin6->sin6_addr.s6_addr[8], 851 &in6.s6_addr[8], 8)) 852 plen = "64"; 853 } 854 } 855 856 if (!plen || strcmp(plen, "128") == 0) 857 return 1; 858 rtm_addrs |= RTA_NETMASK; 859 (void)prefixlen(plen); 860 return 0; 861 } 862 #endif 863 864 /* 865 * Interpret an argument as a network address of some kind, 866 * returning 1 if a host address, 0 if a network address. 867 */ 868 int 869 getaddr(which, s, hpp) 870 int which; 871 char *s; 872 struct hostent **hpp; 873 { 874 sup su; 875 struct hostent *hp; 876 struct netent *np; 877 u_long val; 878 char *q; 879 int afamily; /* local copy of af so we can change it */ 880 881 if (af == 0) { 882 af = AF_INET; 883 aflen = sizeof(struct sockaddr_in); 884 } 885 afamily = af; 886 rtm_addrs |= which; 887 switch (which) { 888 case RTA_DST: 889 su = &so_dst; 890 break; 891 case RTA_GATEWAY: 892 su = &so_gate; 893 if (iflag) { 894 struct ifaddrs *ifap, *ifa; 895 struct sockaddr_dl *sdl = NULL; 896 897 if (getifaddrs(&ifap)) 898 err(1, "getifaddrs"); 899 900 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 901 if (ifa->ifa_addr->sa_family != AF_LINK) 902 continue; 903 904 if (strcmp(s, ifa->ifa_name)) 905 continue; 906 907 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 908 } 909 /* If we found it, then use it */ 910 if (sdl) { 911 /* 912 * Copy is safe since we have a 913 * sockaddr_storage member in sockunion{}. 914 * Note that we need to copy before calling 915 * freeifaddrs(). 916 */ 917 memcpy(&su->sdl, sdl, sdl->sdl_len); 918 } 919 freeifaddrs(ifap); 920 if (sdl) 921 return(1); 922 } 923 break; 924 case RTA_NETMASK: 925 su = &so_mask; 926 break; 927 case RTA_GENMASK: 928 su = &so_genmask; 929 break; 930 case RTA_IFP: 931 su = &so_ifp; 932 afamily = AF_LINK; 933 break; 934 case RTA_IFA: 935 su = &so_ifa; 936 break; 937 default: 938 usage("internal error"); 939 /*NOTREACHED*/ 940 } 941 su->sa.sa_len = aflen; 942 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 943 if (strcmp(s, "default") == 0) { 944 /* 945 * Default is net 0.0.0.0/0 946 */ 947 switch (which) { 948 case RTA_DST: 949 forcenet++; 950 #if 0 951 bzero(su, sizeof(*su)); /* for readability */ 952 #endif 953 (void) getaddr(RTA_NETMASK, s, 0); 954 break; 955 #if 0 956 case RTA_NETMASK: 957 case RTA_GENMASK: 958 bzero(su, sizeof(*su)); /* for readability */ 959 #endif 960 } 961 return (0); 962 } 963 switch (afamily) { 964 #ifdef INET6 965 case AF_INET6: 966 { 967 struct addrinfo hints, *res; 968 969 q = NULL; 970 if (which == RTA_DST && (q = strchr(s, '/')) != NULL) 971 *q = '\0'; 972 memset(&hints, 0, sizeof(hints)); 973 hints.ai_family = afamily; /*AF_INET6*/ 974 hints.ai_flags = AI_NUMERICHOST; 975 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 976 if (getaddrinfo(s, "0", &hints, &res) != 0 || 977 res->ai_family != AF_INET6 || 978 res->ai_addrlen != sizeof(su->sin6)) { 979 (void) fprintf(stderr, "%s: bad value\n", s); 980 exit(1); 981 } 982 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 983 #ifdef __KAME__ 984 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 985 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) && 986 su->sin6.sin6_scope_id) { 987 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 988 htons(su->sin6.sin6_scope_id); 989 su->sin6.sin6_scope_id = 0; 990 } 991 #endif 992 freeaddrinfo(res); 993 if (q != NULL) 994 *q++ = '/'; 995 if (which == RTA_DST) 996 return (inet6_makenetandmask(&su->sin6, q)); 997 return (0); 998 } 999 #endif /* INET6 */ 1000 1001 case AF_APPLETALK: 1002 if (!atalk_aton(s, &su->sat.sat_addr)) 1003 errx(EX_NOHOST, "bad address: %s", s); 1004 rtm_addrs |= RTA_NETMASK; 1005 return(forcehost || su->sat.sat_addr.s_node != 0); 1006 1007 case AF_LINK: 1008 link_addr(s, &su->sdl); 1009 return (1); 1010 1011 1012 case PF_ROUTE: 1013 su->sa.sa_len = sizeof(*su); 1014 sockaddr(s, &su->sa); 1015 return (1); 1016 1017 case AF_INET: 1018 default: 1019 break; 1020 } 1021 1022 if (hpp == NULL) 1023 hpp = &hp; 1024 *hpp = NULL; 1025 1026 q = strchr(s,'/'); 1027 if (q && which == RTA_DST) { 1028 *q = '\0'; 1029 if ((val = inet_network(s)) != INADDR_NONE) { 1030 inet_makenetandmask( 1031 val, &su->sin, strtoul(q+1, 0, 0)); 1032 return (0); 1033 } 1034 *q = '/'; 1035 } 1036 if ((which != RTA_DST || forcenet == 0) && 1037 inet_aton(s, &su->sin.sin_addr)) { 1038 val = su->sin.sin_addr.s_addr; 1039 if (which != RTA_DST || 1040 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1041 return (1); 1042 else { 1043 val = ntohl(val); 1044 goto netdone; 1045 } 1046 } 1047 if (which == RTA_DST && forcehost == 0 && 1048 ((val = inet_network(s)) != INADDR_NONE || 1049 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) { 1050 netdone: 1051 inet_makenetandmask(val, &su->sin, 0); 1052 return (0); 1053 } 1054 hp = gethostbyname(s); 1055 if (hp) { 1056 *hpp = hp; 1057 su->sin.sin_family = hp->h_addrtype; 1058 memmove((char *)&su->sin.sin_addr, hp->h_addr, 1059 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1060 return (1); 1061 } 1062 errx(EX_NOHOST, "bad address: %s", s); 1063 } 1064 1065 int 1066 prefixlen(s) 1067 char *s; 1068 { 1069 int len = atoi(s), q, r; 1070 int max; 1071 char *p; 1072 1073 rtm_addrs |= RTA_NETMASK; 1074 switch (af) { 1075 #ifdef INET6 1076 case AF_INET6: 1077 max = 128; 1078 p = (char *)&so_mask.sin6.sin6_addr; 1079 break; 1080 #endif 1081 case AF_INET: 1082 max = 32; 1083 p = (char *)&so_mask.sin.sin_addr; 1084 break; 1085 default: 1086 (void) fprintf(stderr, "prefixlen not supported in this af\n"); 1087 exit(1); 1088 /*NOTREACHED*/ 1089 } 1090 1091 if (len < 0 || max < len) { 1092 (void) fprintf(stderr, "%s: bad value\n", s); 1093 exit(1); 1094 } 1095 1096 q = len >> 3; 1097 r = len & 7; 1098 so_mask.sa.sa_family = af; 1099 so_mask.sa.sa_len = aflen; 1100 memset((void *)p, 0, max / 8); 1101 if (q > 0) 1102 memset((void *)p, 0xff, q); 1103 if (r > 0) 1104 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1105 if (len == max) 1106 return -1; 1107 else 1108 return len; 1109 } 1110 1111 void 1112 interfaces() 1113 { 1114 size_t needed; 1115 int mib[6]; 1116 char *buf, *lim, *next; 1117 struct rt_msghdr *rtm; 1118 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 err(EX_OSERR, "actual retrieval of interface table"); 1131 lim = buf + needed; 1132 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1133 rtm = (struct rt_msghdr *)next; 1134 print_rtmsg(rtm, rtm->rtm_msglen); 1135 } 1136 } 1137 1138 void 1139 monitor() 1140 { 1141 int n; 1142 char msg[2048]; 1143 1144 verbose = 1; 1145 if (debugonly) { 1146 interfaces(); 1147 exit(0); 1148 } 1149 for(;;) { 1150 time_t now; 1151 n = read(s, msg, 2048); 1152 now = time(NULL); 1153 (void) printf("\ngot message of size %d on %s", n, ctime(&now)); 1154 print_rtmsg((struct rt_msghdr *)msg, n); 1155 } 1156 } 1157 1158 struct { 1159 struct rt_msghdr m_rtm; 1160 char m_space[512]; 1161 } m_rtmsg; 1162 1163 int 1164 rtmsg(cmd, flags) 1165 int cmd, flags; 1166 { 1167 static int seq; 1168 int rlen; 1169 char *cp = m_rtmsg.m_space; 1170 int l; 1171 1172 #define NEXTADDR(w, u) \ 1173 if (rtm_addrs & (w)) {\ 1174 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1175 if (verbose) sodump(&(u),"u");\ 1176 } 1177 1178 errno = 0; 1179 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1180 if (cmd == 'a') 1181 cmd = RTM_ADD; 1182 else if (cmd == 'c') 1183 cmd = RTM_CHANGE; 1184 else if (cmd == 'g') { 1185 cmd = RTM_GET; 1186 if (so_ifp.sa.sa_family == 0) { 1187 so_ifp.sa.sa_family = AF_LINK; 1188 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1189 rtm_addrs |= RTA_IFP; 1190 } 1191 } else 1192 cmd = RTM_DELETE; 1193 #define rtm m_rtmsg.m_rtm 1194 rtm.rtm_type = cmd; 1195 rtm.rtm_flags = flags; 1196 rtm.rtm_version = RTM_VERSION; 1197 rtm.rtm_seq = ++seq; 1198 rtm.rtm_addrs = rtm_addrs; 1199 rtm.rtm_rmx = rt_metrics; 1200 rtm.rtm_inits = rtm_inits; 1201 1202 if (rtm_addrs & RTA_NETMASK) 1203 mask_addr(); 1204 NEXTADDR(RTA_DST, so_dst); 1205 NEXTADDR(RTA_GATEWAY, so_gate); 1206 NEXTADDR(RTA_NETMASK, so_mask); 1207 NEXTADDR(RTA_GENMASK, so_genmask); 1208 NEXTADDR(RTA_IFP, so_ifp); 1209 NEXTADDR(RTA_IFA, so_ifa); 1210 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1211 if (verbose) 1212 print_rtmsg(&rtm, l); 1213 if (debugonly) 1214 return (0); 1215 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1216 warn("writing to routing socket"); 1217 return (-1); 1218 } 1219 if (cmd == RTM_GET) { 1220 do { 1221 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1222 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1223 if (l < 0) 1224 warn("read from routing socket"); 1225 else 1226 print_getmsg(&rtm, l); 1227 } 1228 #undef rtm 1229 return (0); 1230 } 1231 1232 void 1233 mask_addr() 1234 { 1235 int olen = so_mask.sa.sa_len; 1236 char *cp1 = olen + (char *)&so_mask, *cp2; 1237 1238 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1239 if (*--cp1 != 0) { 1240 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1241 break; 1242 } 1243 if ((rtm_addrs & RTA_DST) == 0) 1244 return; 1245 switch (so_dst.sa.sa_family) { 1246 case AF_INET: 1247 #ifdef INET6 1248 case AF_INET6: 1249 #endif 1250 case AF_APPLETALK: 1251 case 0: 1252 return; 1253 } 1254 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1255 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1256 while (cp2 > cp1) 1257 *--cp2 = 0; 1258 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1259 while (cp1 > so_dst.sa.sa_data) 1260 *--cp1 &= *--cp2; 1261 } 1262 1263 char *msgtypes[] = { 1264 "", 1265 "RTM_ADD: Add Route", 1266 "RTM_DELETE: Delete Route", 1267 "RTM_CHANGE: Change Metrics or flags", 1268 "RTM_GET: Report Metrics", 1269 "RTM_LOSING: Kernel Suspects Partitioning", 1270 "RTM_REDIRECT: Told to use different route", 1271 "RTM_MISS: Lookup failed on this address", 1272 "RTM_LOCK: fix specified metrics", 1273 "RTM_OLDADD: caused by SIOCADDRT", 1274 "RTM_OLDDEL: caused by SIOCDELRT", 1275 "RTM_RESOLVE: Route created by cloning", 1276 "RTM_NEWADDR: address being added to iface", 1277 "RTM_DELADDR: address being removed from iface", 1278 "RTM_IFINFO: iface status change", 1279 "RTM_NEWMADDR: new multicast group membership on iface", 1280 "RTM_DELMADDR: multicast group membership removed from iface", 1281 "RTM_IFANNOUNCE: interface arrival/departure", 1282 0, 1283 }; 1284 1285 char metricnames[] = 1286 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1287 "\1mtu"; 1288 char routeflags[] = 1289 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1290 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1291 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1292 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1293 char ifnetflags[] = 1294 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1295 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1296 "\017LINK2\020MULTICAST"; 1297 char addrnames[] = 1298 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1299 1300 void 1301 print_rtmsg(rtm, msglen) 1302 struct rt_msghdr *rtm; 1303 int msglen; 1304 { 1305 struct if_msghdr *ifm; 1306 struct ifa_msghdr *ifam; 1307 #ifdef RTM_NEWMADDR 1308 struct ifma_msghdr *ifmam; 1309 #endif 1310 struct if_announcemsghdr *ifan; 1311 1312 if (verbose == 0) 1313 return; 1314 if (rtm->rtm_version != RTM_VERSION) { 1315 (void) printf("routing message version %d not understood\n", 1316 rtm->rtm_version); 1317 return; 1318 } 1319 if (msgtypes[rtm->rtm_type] != NULL) 1320 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1321 else 1322 (void)printf("#%d: ", rtm->rtm_type); 1323 (void)printf("len %d, ", rtm->rtm_msglen); 1324 switch (rtm->rtm_type) { 1325 case RTM_IFINFO: 1326 ifm = (struct if_msghdr *)rtm; 1327 (void) printf("if# %d, flags:", ifm->ifm_index); 1328 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1329 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1330 break; 1331 case RTM_NEWADDR: 1332 case RTM_DELADDR: 1333 ifam = (struct ifa_msghdr *)rtm; 1334 (void) printf("metric %d, flags:", ifam->ifam_metric); 1335 bprintf(stdout, ifam->ifam_flags, routeflags); 1336 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1337 break; 1338 #ifdef RTM_NEWMADDR 1339 case RTM_NEWMADDR: 1340 case RTM_DELMADDR: 1341 ifmam = (struct ifma_msghdr *)rtm; 1342 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1343 break; 1344 #endif 1345 case RTM_IFANNOUNCE: 1346 ifan = (struct if_announcemsghdr *)rtm; 1347 (void) printf("if# %d, what: ", ifan->ifan_index); 1348 switch (ifan->ifan_what) { 1349 case IFAN_ARRIVAL: 1350 printf("arrival"); 1351 break; 1352 case IFAN_DEPARTURE: 1353 printf("departure"); 1354 break; 1355 default: 1356 printf("#%d", ifan->ifan_what); 1357 break; 1358 } 1359 printf("\n"); 1360 break; 1361 1362 default: 1363 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1364 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1365 bprintf(stdout, rtm->rtm_flags, routeflags); 1366 pmsg_common(rtm); 1367 } 1368 } 1369 1370 void 1371 print_getmsg(rtm, msglen) 1372 struct rt_msghdr *rtm; 1373 int msglen; 1374 { 1375 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1376 struct sockaddr_dl *ifp = NULL; 1377 struct sockaddr *sa; 1378 char *cp; 1379 int i; 1380 1381 (void) printf(" route to: %s\n", routename(&so_dst)); 1382 if (rtm->rtm_version != RTM_VERSION) { 1383 warnx("routing message version %d not understood", 1384 rtm->rtm_version); 1385 return; 1386 } 1387 if (rtm->rtm_msglen > msglen) { 1388 warnx("message length mismatch, in packet %d, returned %d", 1389 rtm->rtm_msglen, msglen); 1390 } 1391 if (rtm->rtm_errno) { 1392 errno = rtm->rtm_errno; 1393 warn("message indicates error %d", errno); 1394 return; 1395 } 1396 cp = ((char *)(rtm + 1)); 1397 if (rtm->rtm_addrs) 1398 for (i = 1; i; i <<= 1) 1399 if (i & rtm->rtm_addrs) { 1400 sa = (struct sockaddr *)cp; 1401 switch (i) { 1402 case RTA_DST: 1403 dst = sa; 1404 break; 1405 case RTA_GATEWAY: 1406 gate = sa; 1407 break; 1408 case RTA_NETMASK: 1409 mask = sa; 1410 break; 1411 case RTA_IFP: 1412 if (sa->sa_family == AF_LINK && 1413 ((struct sockaddr_dl *)sa)->sdl_nlen) 1414 ifp = (struct sockaddr_dl *)sa; 1415 break; 1416 } 1417 ADVANCE(cp, sa); 1418 } 1419 if (dst && mask) 1420 mask->sa_family = dst->sa_family; /* XXX */ 1421 if (dst) 1422 (void)printf("destination: %s\n", routename(dst)); 1423 if (mask) { 1424 int savenflag = nflag; 1425 1426 nflag = 1; 1427 (void)printf(" mask: %s\n", routename(mask)); 1428 nflag = savenflag; 1429 } 1430 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1431 (void)printf(" gateway: %s\n", routename(gate)); 1432 if (ifp) 1433 (void)printf(" interface: %.*s\n", 1434 ifp->sdl_nlen, ifp->sdl_data); 1435 (void)printf(" flags: "); 1436 bprintf(stdout, rtm->rtm_flags, routeflags); 1437 1438 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1439 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1440 1441 (void) printf("\n%s\n", "\ 1442 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1443 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1444 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1445 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1446 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1447 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1448 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1449 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1450 if (rtm->rtm_rmx.rmx_expire) 1451 rtm->rtm_rmx.rmx_expire -= time(0); 1452 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1453 #undef lock 1454 #undef msec 1455 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1456 if (verbose) 1457 pmsg_common(rtm); 1458 else if (rtm->rtm_addrs &~ RTA_IGN) { 1459 (void) printf("sockaddrs: "); 1460 bprintf(stdout, rtm->rtm_addrs, addrnames); 1461 putchar('\n'); 1462 } 1463 #undef RTA_IGN 1464 } 1465 1466 void 1467 pmsg_common(rtm) 1468 struct rt_msghdr *rtm; 1469 { 1470 (void) printf("\nlocks: "); 1471 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1472 (void) printf(" inits: "); 1473 bprintf(stdout, rtm->rtm_inits, metricnames); 1474 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1475 } 1476 1477 void 1478 pmsg_addrs(cp, addrs) 1479 char *cp; 1480 int addrs; 1481 { 1482 struct sockaddr *sa; 1483 int i; 1484 1485 if (addrs == 0) { 1486 (void) putchar('\n'); 1487 return; 1488 } 1489 (void) printf("\nsockaddrs: "); 1490 bprintf(stdout, addrs, addrnames); 1491 (void) putchar('\n'); 1492 for (i = 1; i; i <<= 1) 1493 if (i & addrs) { 1494 sa = (struct sockaddr *)cp; 1495 (void) printf(" %s", routename(sa)); 1496 ADVANCE(cp, sa); 1497 } 1498 (void) putchar('\n'); 1499 (void) fflush(stdout); 1500 } 1501 1502 void 1503 bprintf(fp, b, s) 1504 FILE *fp; 1505 int b; 1506 u_char *s; 1507 { 1508 int i; 1509 int gotsome = 0; 1510 1511 if (b == 0) 1512 return; 1513 while ((i = *s++) != 0) { 1514 if (b & (1 << (i-1))) { 1515 if (gotsome == 0) 1516 i = '<'; 1517 else 1518 i = ','; 1519 (void) putc(i, fp); 1520 gotsome = 1; 1521 for (; (i = *s) > 32; s++) 1522 (void) putc(i, fp); 1523 } else 1524 while (*s > 32) 1525 s++; 1526 } 1527 if (gotsome) 1528 (void) putc('>', fp); 1529 } 1530 1531 int 1532 keyword(cp) 1533 char *cp; 1534 { 1535 struct keytab *kt = keywords; 1536 1537 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1538 kt++; 1539 return kt->kt_i; 1540 } 1541 1542 void 1543 sodump(su, which) 1544 sup su; 1545 char *which; 1546 { 1547 switch (su->sa.sa_family) { 1548 case AF_LINK: 1549 (void) printf("%s: link %s; ", 1550 which, link_ntoa(&su->sdl)); 1551 break; 1552 case AF_INET: 1553 (void) printf("%s: inet %s; ", 1554 which, inet_ntoa(su->sin.sin_addr)); 1555 break; 1556 case AF_APPLETALK: 1557 (void) printf("%s: atalk %s; ", 1558 which, atalk_ntoa(su->sat.sat_addr)); 1559 break; 1560 } 1561 (void) fflush(stdout); 1562 } 1563 1564 /* States*/ 1565 #define VIRGIN 0 1566 #define GOTONE 1 1567 #define GOTTWO 2 1568 /* Inputs */ 1569 #define DIGIT (4*0) 1570 #define END (4*1) 1571 #define DELIM (4*2) 1572 1573 void 1574 sockaddr(addr, sa) 1575 char *addr; 1576 struct sockaddr *sa; 1577 { 1578 char *cp = (char *)sa; 1579 int size = sa->sa_len; 1580 char *cplim = cp + size; 1581 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1582 1583 memset(cp, 0, size); 1584 cp++; 1585 do { 1586 if ((*addr >= '0') && (*addr <= '9')) { 1587 new = *addr - '0'; 1588 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1589 new = *addr - 'a' + 10; 1590 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1591 new = *addr - 'A' + 10; 1592 } else if (*addr == 0) 1593 state |= END; 1594 else 1595 state |= DELIM; 1596 addr++; 1597 switch (state /* | INPUT */) { 1598 case GOTTWO | DIGIT: 1599 *cp++ = byte; /*FALLTHROUGH*/ 1600 case VIRGIN | DIGIT: 1601 state = GOTONE; byte = new; continue; 1602 case GOTONE | DIGIT: 1603 state = GOTTWO; byte = new + (byte << 4); continue; 1604 default: /* | DELIM */ 1605 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1606 case GOTONE | END: 1607 case GOTTWO | END: 1608 *cp++ = byte; /* FALLTHROUGH */ 1609 case VIRGIN | END: 1610 break; 1611 } 1612 break; 1613 } while (cp < cplim); 1614 sa->sa_len = cp - (char *)sa; 1615 } 1616 1617 int 1618 atalk_aton(const char *text, struct at_addr *addr) 1619 { 1620 u_int net, node; 1621 1622 if (sscanf(text, "%u.%u", &net, &node) != 2 1623 || net > 0xffff || node > 0xff) 1624 return(0); 1625 addr->s_net = htons(net); 1626 addr->s_node = node; 1627 return(1); 1628 } 1629 1630 char * 1631 atalk_ntoa(struct at_addr at) 1632 { 1633 static char buf[20]; 1634 1635 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1636 return(buf); 1637 } 1638