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 8.3 (Berkeley) 3/19/94"; 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, uid; 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 int atalk_aton __P((const char *, struct at_addr *)); 111 char *atalk_ntoa __P((struct at_addr)); 112 const char *routename(), *netname(); 113 void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 114 void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 115 int getaddr(), rtmsg(), x25_makemask(); 116 int prefixlen(); 117 extern char *iso_ntoa(); 118 119 void usage __P((const char *)) __dead2; 120 121 void 122 usage(cp) 123 const char *cp; 124 { 125 if (cp) 126 warnx("bad keyword: %s", cp); 127 (void) fprintf(stderr, 128 "usage: route [-dnqtv] command [[modifiers] args]\n"); 129 exit(EX_USAGE); 130 /* NOTREACHED */ 131 } 132 133 #define ROUNDUP(a) \ 134 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 135 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 136 137 int 138 main(argc, argv) 139 int argc; 140 char **argv; 141 { 142 int ch; 143 144 if (argc < 2) 145 usage((char *)NULL); 146 147 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 148 switch(ch) { 149 case 'n': 150 nflag = 1; 151 break; 152 case 'q': 153 qflag = 1; 154 break; 155 case 'v': 156 verbose = 1; 157 break; 158 case 't': 159 tflag = 1; 160 break; 161 case 'd': 162 debugonly = 1; 163 break; 164 case '?': 165 default: 166 usage((char *)NULL); 167 } 168 argc -= optind; 169 argv += optind; 170 171 pid = getpid(); 172 uid = getuid(); 173 if (tflag) 174 s = open(_PATH_DEVNULL, O_WRONLY, 0); 175 else 176 s = socket(PF_ROUTE, SOCK_RAW, 0); 177 if (s < 0) 178 err(EX_OSERR, "socket"); 179 setuid(uid); 180 if (*argv) 181 switch (keyword(*argv)) { 182 case K_GET: 183 uid = 0; 184 /* FALLTHROUGH */ 185 186 case K_CHANGE: 187 case K_ADD: 188 case K_DELETE: 189 newroute(argc, argv); 190 /* NOTREACHED */ 191 192 case K_MONITOR: 193 monitor(); 194 /* NOTREACHED */ 195 196 case K_FLUSH: 197 flushroutes(argc, argv); 198 exit(0); 199 /* NOTREACHED */ 200 } 201 usage(*argv); 202 /* NOTREACHED */ 203 } 204 205 /* 206 * Purge all entries in the routing tables not 207 * associated with network interfaces. 208 */ 209 void 210 flushroutes(argc, argv) 211 int argc; 212 char *argv[]; 213 { 214 size_t needed; 215 int mib[6], rlen, seqno; 216 char *buf, *next, *lim; 217 register struct rt_msghdr *rtm; 218 219 if (uid) { 220 errx(EX_NOPERM, "must be root to alter routing table"); 221 } 222 shutdown(s, 0); /* Don't want to read back our messages */ 223 if (argc > 1) { 224 argv++; 225 if (argc == 2 && **argv == '-') 226 switch (keyword(*argv + 1)) { 227 case K_INET: 228 af = AF_INET; 229 break; 230 #ifdef INET6 231 case K_INET6: 232 af = AF_INET6; 233 break; 234 #endif 235 case K_ATALK: 236 af = AF_APPLETALK; 237 break; 238 #ifdef NS 239 case K_XNS: 240 af = AF_NS; 241 break; 242 #endif 243 case K_LINK: 244 af = AF_LINK; 245 break; 246 default: 247 goto bad; 248 } else 249 bad: usage(*argv); 250 } 251 mib[0] = CTL_NET; 252 mib[1] = PF_ROUTE; 253 mib[2] = 0; /* protocol */ 254 mib[3] = 0; /* wildcard address family */ 255 mib[4] = NET_RT_DUMP; 256 mib[5] = 0; /* no flags */ 257 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 258 err(EX_OSERR, "route-sysctl-estimate"); 259 if ((buf = malloc(needed)) == NULL) 260 errx(EX_OSERR, "malloc failed"); 261 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 262 err(EX_OSERR, "route-sysctl-get"); 263 lim = buf + needed; 264 if (verbose) 265 (void) printf("Examining routing table from sysctl\n"); 266 seqno = 0; /* ??? */ 267 for (next = buf; next < lim; next += rtm->rtm_msglen) { 268 rtm = (struct rt_msghdr *)next; 269 if (verbose) 270 print_rtmsg(rtm, rtm->rtm_msglen); 271 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 272 continue; 273 if (af) { 274 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 275 276 if (sa->sa_family != af) 277 continue; 278 } 279 if (debugonly) 280 continue; 281 rtm->rtm_type = RTM_DELETE; 282 rtm->rtm_seq = seqno; 283 rlen = write(s, next, rtm->rtm_msglen); 284 if (rlen < (int)rtm->rtm_msglen) { 285 warn("write to routing socket"); 286 (void) printf("got only %d for rlen\n", rlen); 287 break; 288 } 289 seqno++; 290 if (qflag) 291 continue; 292 if (verbose) 293 print_rtmsg(rtm, rlen); 294 else { 295 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 296 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 297 routename(sa) : netname(sa)); 298 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 299 (void) printf("%-20.20s ", routename(sa)); 300 (void) printf("done\n"); 301 } 302 } 303 } 304 305 const char * 306 routename(sa) 307 struct sockaddr *sa; 308 { 309 register char *cp; 310 static char line[MAXHOSTNAMELEN + 1]; 311 struct hostent *hp; 312 static char domain[MAXHOSTNAMELEN + 1]; 313 static int first = 1; 314 #ifdef NS 315 char *ns_print(); 316 #endif 317 318 if (first) { 319 first = 0; 320 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 321 (cp = index(domain, '.'))) { 322 domain[MAXHOSTNAMELEN] = '\0'; 323 (void) strcpy(domain, cp + 1); 324 } else 325 domain[0] = 0; 326 } 327 328 if (sa->sa_len == 0) 329 strcpy(line, "default"); 330 else switch (sa->sa_family) { 331 332 case AF_INET: 333 { struct in_addr in; 334 in = ((struct sockaddr_in *)sa)->sin_addr; 335 336 cp = 0; 337 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 338 cp = "default"; 339 if (cp == 0 && !nflag) { 340 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 341 AF_INET); 342 if (hp) { 343 if ((cp = index(hp->h_name, '.')) && 344 !strcmp(cp + 1, domain)) 345 *cp = 0; 346 cp = hp->h_name; 347 } 348 } 349 if (cp) { 350 strncpy(line, cp, sizeof(line) - 1); 351 line[sizeof(line) - 1] = '\0'; 352 } else 353 (void) sprintf(line, "%s", inet_ntoa(in)); 354 break; 355 } 356 357 #ifdef INET6 358 case AF_INET6: 359 { 360 struct sockaddr_in6 sin6; /* use static var for safety */ 361 int niflags = 0; 362 #ifdef NI_WITHSCOPEID 363 niflags = NI_WITHSCOPEID; 364 #endif 365 366 memset(&sin6, 0, sizeof(sin6)); 367 memcpy(&sin6, sa, sa->sa_len); 368 sin6.sin6_len = sizeof(struct sockaddr_in6); 369 sin6.sin6_family = AF_INET6; 370 #ifdef __KAME__ 371 if (sa->sa_len == sizeof(struct sockaddr_in6) && 372 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 373 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 374 sin6.sin6_scope_id == 0) { 375 sin6.sin6_scope_id = 376 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 377 sin6.sin6_addr.s6_addr[2] = 0; 378 sin6.sin6_addr.s6_addr[3] = 0; 379 } 380 #endif 381 if (nflag) 382 niflags |= NI_NUMERICHOST; 383 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 384 line, sizeof(line), NULL, 0, niflags) != 0) 385 strncpy(line, "invalid", sizeof(line)); 386 387 return(line); 388 } 389 #endif 390 391 case AF_APPLETALK: 392 (void) snprintf(line, sizeof(line), "atalk %s", 393 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 394 break; 395 396 #ifdef NS 397 case AF_NS: 398 return (ns_print((struct sockaddr_ns *)sa)); 399 #endif 400 401 case AF_LINK: 402 return (link_ntoa((struct sockaddr_dl *)sa)); 403 404 default: 405 { u_short *s = (u_short *)sa; 406 u_short *slim = s + ((sa->sa_len + 1) >> 1); 407 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 408 char *cpe = line + sizeof(line); 409 410 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 411 cp += snprintf(cp, cpe - cp, " %x", *s); 412 break; 413 } 414 } 415 return (line); 416 } 417 418 /* 419 * Return the name of the network whose address is given. 420 * The address is assumed to be that of a net or subnet, not a host. 421 */ 422 const char * 423 netname(sa) 424 struct sockaddr *sa; 425 { 426 char *cp = 0; 427 static char line[MAXHOSTNAMELEN + 1]; 428 struct netent *np = 0; 429 u_long net, mask; 430 register u_long i; 431 int subnetshift; 432 #ifdef NS 433 char *ns_print(); 434 #endif 435 436 switch (sa->sa_family) { 437 438 case AF_INET: 439 { struct in_addr in; 440 in = ((struct sockaddr_in *)sa)->sin_addr; 441 442 i = in.s_addr = ntohl(in.s_addr); 443 if (in.s_addr == 0) 444 cp = "default"; 445 else if (!nflag) { 446 if (IN_CLASSA(i)) { 447 mask = IN_CLASSA_NET; 448 subnetshift = 8; 449 } else if (IN_CLASSB(i)) { 450 mask = IN_CLASSB_NET; 451 subnetshift = 8; 452 } else { 453 mask = IN_CLASSC_NET; 454 subnetshift = 4; 455 } 456 /* 457 * If there are more bits than the standard mask 458 * would suggest, subnets must be in use. 459 * Guess at the subnet mask, assuming reasonable 460 * width subnet fields. 461 */ 462 while (in.s_addr &~ mask) 463 mask = (long)mask >> subnetshift; 464 net = in.s_addr & mask; 465 while ((mask & 1) == 0) 466 mask >>= 1, net >>= 1; 467 np = getnetbyaddr(net, AF_INET); 468 if (np) 469 cp = np->n_name; 470 } 471 #define C(x) (unsigned)((x) & 0xff) 472 if (cp) 473 strncpy(line, cp, sizeof(line)); 474 else if ((in.s_addr & 0xffffff) == 0) 475 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 476 else if ((in.s_addr & 0xffff) == 0) 477 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 478 C(in.s_addr >> 16)); 479 else if ((in.s_addr & 0xff) == 0) 480 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 481 C(in.s_addr >> 16), C(in.s_addr >> 8)); 482 else 483 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 484 C(in.s_addr >> 16), C(in.s_addr >> 8), 485 C(in.s_addr)); 486 #undef C 487 break; 488 } 489 490 #ifdef INET6 491 case AF_INET6: 492 { 493 struct sockaddr_in6 sin6; /* use static var for safety */ 494 int niflags = 0; 495 #ifdef NI_WITHSCOPEID 496 niflags = NI_WITHSCOPEID; 497 #endif 498 499 memset(&sin6, 0, sizeof(sin6)); 500 memcpy(&sin6, sa, sa->sa_len); 501 sin6.sin6_len = sizeof(struct sockaddr_in6); 502 sin6.sin6_family = AF_INET6; 503 #ifdef __KAME__ 504 if (sa->sa_len == sizeof(struct sockaddr_in6) && 505 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 506 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 507 sin6.sin6_scope_id == 0) { 508 sin6.sin6_scope_id = 509 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 510 sin6.sin6_addr.s6_addr[2] = 0; 511 sin6.sin6_addr.s6_addr[3] = 0; 512 } 513 #endif 514 if (nflag) 515 niflags |= NI_NUMERICHOST; 516 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 517 line, sizeof(line), NULL, 0, niflags) != 0) 518 strncpy(line, "invalid", sizeof(line)); 519 520 return(line); 521 } 522 #endif 523 524 case AF_APPLETALK: 525 (void) snprintf(line, sizeof(line), "atalk %s", 526 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 527 break; 528 529 #ifdef NS 530 case AF_NS: 531 return (ns_print((struct sockaddr_ns *)sa)); 532 break; 533 #endif 534 535 case AF_LINK: 536 return (link_ntoa((struct sockaddr_dl *)sa)); 537 538 539 default: 540 { u_short *s = (u_short *)sa->sa_data; 541 u_short *slim = s + ((sa->sa_len + 1)>>1); 542 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 543 char *cpe = line + sizeof(line); 544 545 while (s < slim && cp < cpe) 546 cp += snprintf(cp, cpe - cp, " %x", *s++); 547 break; 548 } 549 } 550 return (line); 551 } 552 553 void 554 set_metric(value, key) 555 char *value; 556 int key; 557 { 558 int flag = 0; 559 u_long noval, *valp = &noval; 560 561 switch (key) { 562 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 563 caseof(K_MTU, RTV_MTU, rmx_mtu); 564 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 565 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 566 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 567 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 568 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 569 caseof(K_RTT, RTV_RTT, rmx_rtt); 570 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 571 } 572 rtm_inits |= flag; 573 if (lockrest || locking) 574 rt_metrics.rmx_locks |= flag; 575 if (locking) 576 locking = 0; 577 *valp = atoi(value); 578 } 579 580 void 581 newroute(argc, argv) 582 int argc; 583 register char **argv; 584 { 585 char *cmd, *dest = "", *gateway = "", *err; 586 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC; 587 int key; 588 struct hostent *hp = 0; 589 590 if (uid) { 591 errx(EX_NOPERM, "must be root to alter routing table"); 592 } 593 cmd = argv[0]; 594 if (*cmd != 'g') 595 shutdown(s, 0); /* Don't want to read back our messages */ 596 while (--argc > 0) { 597 if (**(++argv)== '-') { 598 switch (key = keyword(1 + *argv)) { 599 case K_LINK: 600 af = AF_LINK; 601 aflen = sizeof(struct sockaddr_dl); 602 break; 603 case K_INET: 604 af = AF_INET; 605 aflen = sizeof(struct sockaddr_in); 606 break; 607 #ifdef INET6 608 case K_INET6: 609 af = AF_INET6; 610 aflen = sizeof(struct sockaddr_in6); 611 break; 612 #endif 613 case K_ATALK: 614 af = AF_APPLETALK; 615 aflen = sizeof(struct sockaddr_at); 616 break; 617 case K_SA: 618 af = PF_ROUTE; 619 aflen = sizeof(union sockunion); 620 break; 621 #ifdef NS 622 case K_XNS: 623 af = AF_NS; 624 aflen = sizeof(struct sockaddr_ns); 625 break; 626 #endif 627 case K_IFACE: 628 case K_INTERFACE: 629 iflag++; 630 break; 631 case K_NOSTATIC: 632 flags &= ~RTF_STATIC; 633 break; 634 case K_LLINFO: 635 flags |= RTF_LLINFO; 636 break; 637 case K_LOCK: 638 locking = 1; 639 break; 640 case K_LOCKREST: 641 lockrest = 1; 642 break; 643 case K_HOST: 644 forcehost++; 645 break; 646 case K_REJECT: 647 flags |= RTF_REJECT; 648 break; 649 case K_BLACKHOLE: 650 flags |= RTF_BLACKHOLE; 651 break; 652 case K_PROTO1: 653 flags |= RTF_PROTO1; 654 break; 655 case K_PROTO2: 656 flags |= RTF_PROTO2; 657 break; 658 case K_PROXY: 659 proxy = 1; 660 break; 661 case K_CLONING: 662 flags |= RTF_CLONING; 663 break; 664 case K_XRESOLVE: 665 flags |= RTF_XRESOLVE; 666 break; 667 case K_STATIC: 668 flags |= RTF_STATIC; 669 break; 670 case K_IFA: 671 if (!--argc) 672 usage((char *)NULL); 673 (void) getaddr(RTA_IFA, *++argv, 0); 674 break; 675 case K_IFP: 676 if (!--argc) 677 usage((char *)NULL); 678 (void) getaddr(RTA_IFP, *++argv, 0); 679 break; 680 case K_GENMASK: 681 if (!--argc) 682 usage((char *)NULL); 683 (void) getaddr(RTA_GENMASK, *++argv, 0); 684 break; 685 case K_GATEWAY: 686 if (!--argc) 687 usage((char *)NULL); 688 (void) getaddr(RTA_GATEWAY, *++argv, 0); 689 break; 690 case K_DST: 691 if (!--argc) 692 usage((char *)NULL); 693 ishost = getaddr(RTA_DST, *++argv, &hp); 694 dest = *argv; 695 break; 696 case K_NETMASK: 697 if (!--argc) 698 usage((char *)NULL); 699 (void) getaddr(RTA_NETMASK, *++argv, 0); 700 /* FALLTHROUGH */ 701 case K_NET: 702 forcenet++; 703 break; 704 case K_PREFIXLEN: 705 if (!--argc) 706 usage((char *)NULL); 707 if (prefixlen(*++argv) == -1) { 708 forcenet = 0; 709 ishost = 1; 710 } else { 711 forcenet = 1; 712 ishost = 0; 713 } 714 break; 715 case K_MTU: 716 case K_HOPCOUNT: 717 case K_EXPIRE: 718 case K_RECVPIPE: 719 case K_SENDPIPE: 720 case K_SSTHRESH: 721 case K_RTT: 722 case K_RTTVAR: 723 if (!--argc) 724 usage((char *)NULL); 725 set_metric(*++argv, key); 726 break; 727 default: 728 usage(1+*argv); 729 } 730 } else { 731 if ((rtm_addrs & RTA_DST) == 0) { 732 dest = *argv; 733 ishost = getaddr(RTA_DST, *argv, &hp); 734 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 735 gateway = *argv; 736 (void) getaddr(RTA_GATEWAY, *argv, &hp); 737 } else { 738 (void) getaddr(RTA_NETMASK, *argv, 0); 739 } 740 } 741 } 742 if (forcehost) { 743 ishost = 1; 744 #ifdef INET6 745 if (af == AF_INET6) { 746 rtm_addrs &= ~RTA_NETMASK; 747 memset((void *)&so_mask, 0, sizeof(so_mask)); 748 } 749 #endif 750 } 751 if (forcenet) 752 ishost = 0; 753 flags |= RTF_UP; 754 if (ishost) 755 flags |= RTF_HOST; 756 if (iflag == 0) 757 flags |= RTF_GATEWAY; 758 if (proxy) { 759 so_dst.sinarp.sin_other = SIN_PROXY; 760 flags |= RTF_ANNOUNCE; 761 } 762 for (attempts = 1; ; attempts++) { 763 errno = 0; 764 if ((ret = rtmsg(*cmd, flags)) == 0) 765 break; 766 if (errno != ENETUNREACH && errno != ESRCH) 767 break; 768 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 769 hp->h_addr_list++; 770 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr, 771 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 772 } else 773 break; 774 } 775 if (*cmd == 'g') 776 exit(0); 777 oerrno = errno; 778 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 779 if (*gateway) { 780 (void) printf(": gateway %s", gateway); 781 if (attempts > 1 && ret == 0 && af == AF_INET) 782 (void) printf(" (%s)", 783 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 784 } 785 if (ret == 0) { 786 (void) printf("\n"); 787 exit(0); 788 } else { 789 switch (oerrno) { 790 case ESRCH: 791 err = "not in table"; 792 break; 793 case EBUSY: 794 err = "entry in use"; 795 break; 796 case ENOBUFS: 797 err = "routing table overflow"; 798 break; 799 case EDQUOT: /* handle recursion avoidance in rt_setgate() */ 800 err = "gateway uses the same route"; 801 break; 802 default: 803 err = strerror(oerrno); 804 break; 805 } 806 (void) printf(": %s\n", err); 807 exit(1); 808 } 809 } 810 811 void 812 inet_makenetandmask(net, sin, bits) 813 u_long net, bits; 814 register struct sockaddr_in *sin; 815 { 816 u_long addr, mask = 0; 817 register char *cp; 818 819 rtm_addrs |= RTA_NETMASK; 820 if (net == 0) 821 mask = addr = 0; 822 else if (net < 128) { 823 addr = net << IN_CLASSA_NSHIFT; 824 mask = IN_CLASSA_NET; 825 } else if (net < 65536) { 826 addr = net << IN_CLASSB_NSHIFT; 827 mask = IN_CLASSB_NET; 828 } else if (net < 16777216L) { 829 addr = net << IN_CLASSC_NSHIFT; 830 mask = IN_CLASSC_NET; 831 } else { 832 addr = net; 833 if ((addr & IN_CLASSA_HOST) == 0) 834 mask = IN_CLASSA_NET; 835 else if ((addr & IN_CLASSB_HOST) == 0) 836 mask = IN_CLASSB_NET; 837 else if ((addr & IN_CLASSC_HOST) == 0) 838 mask = IN_CLASSC_NET; 839 else 840 mask = -1; 841 } 842 if (bits) 843 mask = 0xffffffff << (32 - bits); 844 sin->sin_addr.s_addr = htonl(addr); 845 sin = &so_mask.sin; 846 sin->sin_addr.s_addr = htonl(mask); 847 sin->sin_len = 0; 848 sin->sin_family = 0; 849 cp = (char *)(&sin->sin_addr + 1); 850 while (*--cp == 0 && cp > (char *)sin) 851 ; 852 sin->sin_len = 1 + cp - (char *)sin; 853 } 854 855 /* 856 * Interpret an argument as a network address of some kind, 857 * returning 1 if a host address, 0 if a network address. 858 */ 859 int 860 getaddr(which, s, hpp) 861 int which; 862 char *s; 863 struct hostent **hpp; 864 { 865 register sup su; 866 struct hostent *hp; 867 struct netent *np; 868 u_long val; 869 char *q; 870 int afamily; /* local copy of af so we can change it */ 871 872 if (af == 0) { 873 af = AF_INET; 874 aflen = sizeof(struct sockaddr_in); 875 } 876 afamily = af; 877 rtm_addrs |= which; 878 switch (which) { 879 case RTA_DST: 880 su = &so_dst; 881 break; 882 case RTA_GATEWAY: 883 su = &so_gate; 884 if (iflag) { 885 struct ifaddrs *ifap, *ifa; 886 struct sockaddr_dl *sdl = NULL; 887 888 if (getifaddrs(&ifap)) 889 err(1, "getifaddrs"); 890 891 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 892 if (ifa->ifa_addr->sa_family != AF_LINK) 893 continue; 894 895 if (strcmp(s, ifa->ifa_name)) 896 continue; 897 898 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 899 } 900 /* If we found it, then use it */ 901 if (sdl) { 902 /* 903 * Copy is safe since we have a 904 * sockaddr_storage member in sockunion{}. 905 * Note that we need to copy before calling 906 * freeifaddrs(). 907 */ 908 memcpy(&su->sdl, sdl, sdl->sdl_len); 909 } 910 freeifaddrs(ifap); 911 if (sdl) 912 return(1); 913 } 914 break; 915 case RTA_NETMASK: 916 su = &so_mask; 917 break; 918 case RTA_GENMASK: 919 su = &so_genmask; 920 break; 921 case RTA_IFP: 922 su = &so_ifp; 923 afamily = AF_LINK; 924 break; 925 case RTA_IFA: 926 su = &so_ifa; 927 break; 928 default: 929 usage("internal error"); 930 /*NOTREACHED*/ 931 } 932 su->sa.sa_len = aflen; 933 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 934 if (strcmp(s, "default") == 0) { 935 /* 936 * Default is net 0.0.0.0/0 937 */ 938 switch (which) { 939 case RTA_DST: 940 forcenet++; 941 /* bzero(su, sizeof(*su)); *//* for readability */ 942 (void) getaddr(RTA_NETMASK, s, 0); 943 break; 944 case RTA_NETMASK: 945 case RTA_GENMASK: 946 /* bzero(su, sizeof(*su)); *//* for readability */ 947 } 948 return (0); 949 } 950 switch (afamily) { 951 #ifdef INET6 952 case AF_INET6: 953 { 954 struct addrinfo hints, *res; 955 956 memset(&hints, 0, sizeof(hints)); 957 hints.ai_family = afamily; /*AF_INET6*/ 958 hints.ai_flags = AI_NUMERICHOST; 959 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 960 if (getaddrinfo(s, "0", &hints, &res) != 0 || 961 res->ai_family != AF_INET6 || 962 res->ai_addrlen != sizeof(su->sin6)) { 963 (void) fprintf(stderr, "%s: bad value\n", s); 964 exit(1); 965 } 966 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 967 #ifdef __KAME__ 968 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 969 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) && 970 su->sin6.sin6_scope_id) { 971 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 972 htons(su->sin6.sin6_scope_id); 973 su->sin6.sin6_scope_id = 0; 974 } 975 #endif 976 freeaddrinfo(res); 977 return (0); 978 } 979 #endif /* INET6 */ 980 981 #ifdef NS 982 case AF_NS: 983 if (which == RTA_DST) { 984 extern short ns_bh[3]; 985 struct sockaddr_ns *sms = &(so_mask.sns); 986 bzero((char *)sms, sizeof(*sms)); 987 sms->sns_family = 0; 988 sms->sns_len = 6; 989 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 990 rtm_addrs |= RTA_NETMASK; 991 } 992 su->sns.sns_addr = ns_addr(s); 993 return (!ns_nullhost(su->sns.sns_addr)); 994 #endif 995 996 997 case AF_APPLETALK: 998 if (!atalk_aton(s, &su->sat.sat_addr)) 999 errx(EX_NOHOST, "bad address: %s", s); 1000 rtm_addrs |= RTA_NETMASK; 1001 return(forcehost || su->sat.sat_addr.s_node != 0); 1002 1003 case AF_LINK: 1004 link_addr(s, &su->sdl); 1005 return (1); 1006 1007 1008 case PF_ROUTE: 1009 su->sa.sa_len = sizeof(*su); 1010 sockaddr(s, &su->sa); 1011 return (1); 1012 1013 case AF_INET: 1014 default: 1015 break; 1016 } 1017 1018 if (hpp == NULL) 1019 hpp = &hp; 1020 *hpp = NULL; 1021 1022 q = strchr(s,'/'); 1023 if (q && which == RTA_DST) { 1024 *q = '\0'; 1025 if ((val = inet_network(s)) != INADDR_NONE) { 1026 inet_makenetandmask( 1027 val, &su->sin, strtoul(q+1, 0, 0)); 1028 return (0); 1029 } 1030 *q = '/'; 1031 } 1032 if ((which != RTA_DST || forcenet == 0) && 1033 (val = inet_addr(s)) != INADDR_NONE) { 1034 su->sin.sin_addr.s_addr = val; 1035 if (which != RTA_DST || 1036 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1037 return (1); 1038 else { 1039 val = ntohl(val); 1040 goto netdone; 1041 } 1042 } 1043 if (which == RTA_DST && forcehost == 0 && 1044 ((val = inet_network(s)) != INADDR_NONE || 1045 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) { 1046 netdone: 1047 inet_makenetandmask(val, &su->sin, 0); 1048 return (0); 1049 } 1050 hp = gethostbyname(s); 1051 if (hp) { 1052 *hpp = hp; 1053 su->sin.sin_family = hp->h_addrtype; 1054 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, 1055 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1056 return (1); 1057 } 1058 errx(EX_NOHOST, "bad address: %s", s); 1059 } 1060 1061 int 1062 prefixlen(s) 1063 char *s; 1064 { 1065 int len = atoi(s), q, r; 1066 int max; 1067 char *p; 1068 1069 rtm_addrs |= RTA_NETMASK; 1070 switch (af) { 1071 #ifdef INET6 1072 case AF_INET6: 1073 max = 128; 1074 p = (char *)&so_mask.sin6.sin6_addr; 1075 break; 1076 #endif 1077 case AF_INET: 1078 max = 32; 1079 p = (char *)&so_mask.sin.sin_addr; 1080 break; 1081 default: 1082 (void) fprintf(stderr, "prefixlen not supported in this af\n"); 1083 exit(1); 1084 /*NOTREACHED*/ 1085 } 1086 1087 if (len < 0 || max < len) { 1088 (void) fprintf(stderr, "%s: bad value\n", s); 1089 exit(1); 1090 } 1091 1092 q = len >> 3; 1093 r = len & 7; 1094 so_mask.sa.sa_family = af; 1095 so_mask.sa.sa_len = aflen; 1096 memset((void *)p, 0, max / 8); 1097 if (q > 0) 1098 memset((void *)p, 0xff, q); 1099 if (r > 0) 1100 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1101 if (len == max) 1102 return -1; 1103 else 1104 return len; 1105 } 1106 1107 #ifdef NS 1108 short ns_nullh[] = {0,0,0}; 1109 short ns_bh[] = {-1,-1,-1}; 1110 1111 char * 1112 ns_print(sns) 1113 struct sockaddr_ns *sns; 1114 { 1115 struct ns_addr work; 1116 union { union ns_net net_e; u_long long_e; } net; 1117 u_short port; 1118 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 1119 char *host = ""; 1120 register char *p; 1121 register u_char *q; 1122 1123 work = sns->sns_addr; 1124 port = ntohs(work.x_port); 1125 work.x_port = 0; 1126 net.net_e = work.x_net; 1127 if (ns_nullhost(work) && net.long_e == 0) { 1128 if (!port) 1129 return ("*.*"); 1130 (void) sprintf(mybuf, "*.%XH", port); 1131 return (mybuf); 1132 } 1133 1134 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0) 1135 host = "any"; 1136 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0) 1137 host = "*"; 1138 else { 1139 q = work.x_host.c_host; 1140 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 1141 q[0], q[1], q[2], q[3], q[4], q[5]); 1142 for (p = chost; *p == '0' && p < chost + 12; p++) 1143 /* void */; 1144 host = p; 1145 } 1146 if (port) 1147 (void) sprintf(cport, ".%XH", htons(port)); 1148 else 1149 *cport = 0; 1150 1151 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 1152 (unsigned long)ntohl(net.long_e), 1153 host, cport); 1154 return (mybuf); 1155 } 1156 #endif 1157 1158 void 1159 interfaces() 1160 { 1161 size_t needed; 1162 int mib[6]; 1163 char *buf, *lim, *next; 1164 register struct rt_msghdr *rtm; 1165 1166 mib[0] = CTL_NET; 1167 mib[1] = PF_ROUTE; 1168 mib[2] = 0; /* protocol */ 1169 mib[3] = 0; /* wildcard address family */ 1170 mib[4] = NET_RT_IFLIST; 1171 mib[5] = 0; /* no flags */ 1172 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1173 err(EX_OSERR, "route-sysctl-estimate"); 1174 if ((buf = malloc(needed)) == NULL) 1175 errx(EX_OSERR, "malloc failed"); 1176 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1177 err(EX_OSERR, "actual retrieval of interface table"); 1178 lim = buf + needed; 1179 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1180 rtm = (struct rt_msghdr *)next; 1181 print_rtmsg(rtm, rtm->rtm_msglen); 1182 } 1183 } 1184 1185 void 1186 monitor() 1187 { 1188 int n; 1189 char msg[2048]; 1190 1191 verbose = 1; 1192 if (debugonly) { 1193 interfaces(); 1194 exit(0); 1195 } 1196 for(;;) { 1197 time_t now; 1198 n = read(s, msg, 2048); 1199 now = time(NULL); 1200 (void) printf("\ngot message of size %d on %s", n, ctime(&now)); 1201 print_rtmsg((struct rt_msghdr *)msg, n); 1202 } 1203 } 1204 1205 struct { 1206 struct rt_msghdr m_rtm; 1207 char m_space[512]; 1208 } m_rtmsg; 1209 1210 int 1211 rtmsg(cmd, flags) 1212 int cmd, flags; 1213 { 1214 static int seq; 1215 int rlen; 1216 register char *cp = m_rtmsg.m_space; 1217 register int l; 1218 1219 #define NEXTADDR(w, u) \ 1220 if (rtm_addrs & (w)) {\ 1221 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 1222 if (verbose) sodump(&(u),"u");\ 1223 } 1224 1225 errno = 0; 1226 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 1227 if (cmd == 'a') 1228 cmd = RTM_ADD; 1229 else if (cmd == 'c') 1230 cmd = RTM_CHANGE; 1231 else if (cmd == 'g') { 1232 cmd = RTM_GET; 1233 if (so_ifp.sa.sa_family == 0) { 1234 so_ifp.sa.sa_family = AF_LINK; 1235 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1236 rtm_addrs |= RTA_IFP; 1237 } 1238 } else 1239 cmd = RTM_DELETE; 1240 #define rtm m_rtmsg.m_rtm 1241 rtm.rtm_type = cmd; 1242 rtm.rtm_flags = flags; 1243 rtm.rtm_version = RTM_VERSION; 1244 rtm.rtm_seq = ++seq; 1245 rtm.rtm_addrs = rtm_addrs; 1246 rtm.rtm_rmx = rt_metrics; 1247 rtm.rtm_inits = rtm_inits; 1248 1249 if (rtm_addrs & RTA_NETMASK) 1250 mask_addr(); 1251 NEXTADDR(RTA_DST, so_dst); 1252 NEXTADDR(RTA_GATEWAY, so_gate); 1253 NEXTADDR(RTA_NETMASK, so_mask); 1254 NEXTADDR(RTA_GENMASK, so_genmask); 1255 NEXTADDR(RTA_IFP, so_ifp); 1256 NEXTADDR(RTA_IFA, so_ifa); 1257 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1258 if (verbose) 1259 print_rtmsg(&rtm, l); 1260 if (debugonly) 1261 return (0); 1262 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1263 warn("writing to routing socket"); 1264 return (-1); 1265 } 1266 if (cmd == RTM_GET) { 1267 do { 1268 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1269 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1270 if (l < 0) 1271 warn("read from routing socket"); 1272 else 1273 print_getmsg(&rtm, l); 1274 } 1275 #undef rtm 1276 return (0); 1277 } 1278 1279 void 1280 mask_addr() 1281 { 1282 int olen = so_mask.sa.sa_len; 1283 register char *cp1 = olen + (char *)&so_mask, *cp2; 1284 1285 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1286 if (*--cp1 != 0) { 1287 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1288 break; 1289 } 1290 if ((rtm_addrs & RTA_DST) == 0) 1291 return; 1292 switch (so_dst.sa.sa_family) { 1293 #ifdef NS 1294 case AF_NS: 1295 #endif 1296 case AF_INET: 1297 #ifdef INET6 1298 case AF_INET6: 1299 #endif 1300 case AF_APPLETALK: 1301 case 0: 1302 return; 1303 } 1304 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1305 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1306 while (cp2 > cp1) 1307 *--cp2 = 0; 1308 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1309 while (cp1 > so_dst.sa.sa_data) 1310 *--cp1 &= *--cp2; 1311 } 1312 1313 char *msgtypes[] = { 1314 "", 1315 "RTM_ADD: Add Route", 1316 "RTM_DELETE: Delete Route", 1317 "RTM_CHANGE: Change Metrics or flags", 1318 "RTM_GET: Report Metrics", 1319 "RTM_LOSING: Kernel Suspects Partitioning", 1320 "RTM_REDIRECT: Told to use different route", 1321 "RTM_MISS: Lookup failed on this address", 1322 "RTM_LOCK: fix specified metrics", 1323 "RTM_OLDADD: caused by SIOCADDRT", 1324 "RTM_OLDDEL: caused by SIOCDELRT", 1325 "RTM_RESOLVE: Route created by cloning", 1326 "RTM_NEWADDR: address being added to iface", 1327 "RTM_DELADDR: address being removed from iface", 1328 "RTM_IFINFO: iface status change", 1329 "RTM_NEWMADDR: new multicast group membership on iface", 1330 "RTM_DELMADDR: multicast group membership removed from iface", 1331 0, 1332 }; 1333 1334 char metricnames[] = 1335 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1336 "\1mtu"; 1337 char routeflags[] = 1338 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1339 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1340 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1341 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1342 char ifnetflags[] = 1343 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1344 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1345 "\017LINK2\020MULTICAST"; 1346 char addrnames[] = 1347 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1348 1349 void 1350 print_rtmsg(rtm, msglen) 1351 register struct rt_msghdr *rtm; 1352 int msglen; 1353 { 1354 struct if_msghdr *ifm; 1355 struct ifa_msghdr *ifam; 1356 #ifdef RTM_NEWMADDR 1357 struct ifma_msghdr *ifmam; 1358 #endif 1359 1360 if (verbose == 0) 1361 return; 1362 if (rtm->rtm_version != RTM_VERSION) { 1363 (void) printf("routing message version %d not understood\n", 1364 rtm->rtm_version); 1365 return; 1366 } 1367 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1368 switch (rtm->rtm_type) { 1369 case RTM_IFINFO: 1370 ifm = (struct if_msghdr *)rtm; 1371 (void) printf("if# %d, flags:", ifm->ifm_index); 1372 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1373 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1374 break; 1375 case RTM_NEWADDR: 1376 case RTM_DELADDR: 1377 ifam = (struct ifa_msghdr *)rtm; 1378 (void) printf("metric %d, flags:", ifam->ifam_metric); 1379 bprintf(stdout, ifam->ifam_flags, routeflags); 1380 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1381 break; 1382 #ifdef RTM_NEWMADDR 1383 case RTM_NEWMADDR: 1384 case RTM_DELMADDR: 1385 ifmam = (struct ifma_msghdr *)rtm; 1386 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1387 break; 1388 #endif 1389 default: 1390 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1391 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1392 bprintf(stdout, rtm->rtm_flags, routeflags); 1393 pmsg_common(rtm); 1394 } 1395 } 1396 1397 void 1398 print_getmsg(rtm, msglen) 1399 register struct rt_msghdr *rtm; 1400 int msglen; 1401 { 1402 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1403 struct sockaddr_dl *ifp = NULL; 1404 register struct sockaddr *sa; 1405 register char *cp; 1406 register int i; 1407 1408 (void) printf(" route to: %s\n", routename(&so_dst)); 1409 if (rtm->rtm_version != RTM_VERSION) { 1410 warnx("routing message version %d not understood", 1411 rtm->rtm_version); 1412 return; 1413 } 1414 if (rtm->rtm_msglen > msglen) { 1415 warnx("message length mismatch, in packet %d, returned %d", 1416 rtm->rtm_msglen, msglen); 1417 } 1418 if (rtm->rtm_errno) { 1419 errno = rtm->rtm_errno; 1420 warn("message indicates error %d", errno); 1421 return; 1422 } 1423 cp = ((char *)(rtm + 1)); 1424 if (rtm->rtm_addrs) 1425 for (i = 1; i; i <<= 1) 1426 if (i & rtm->rtm_addrs) { 1427 sa = (struct sockaddr *)cp; 1428 switch (i) { 1429 case RTA_DST: 1430 dst = sa; 1431 break; 1432 case RTA_GATEWAY: 1433 gate = sa; 1434 break; 1435 case RTA_NETMASK: 1436 mask = sa; 1437 break; 1438 case RTA_IFP: 1439 if (sa->sa_family == AF_LINK && 1440 ((struct sockaddr_dl *)sa)->sdl_nlen) 1441 ifp = (struct sockaddr_dl *)sa; 1442 break; 1443 } 1444 ADVANCE(cp, sa); 1445 } 1446 if (dst && mask) 1447 mask->sa_family = dst->sa_family; /* XXX */ 1448 if (dst) 1449 (void)printf("destination: %s\n", routename(dst)); 1450 if (mask) { 1451 int savenflag = nflag; 1452 1453 nflag = 1; 1454 (void)printf(" mask: %s\n", routename(mask)); 1455 nflag = savenflag; 1456 } 1457 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1458 (void)printf(" gateway: %s\n", routename(gate)); 1459 if (ifp) 1460 (void)printf(" interface: %.*s\n", 1461 ifp->sdl_nlen, ifp->sdl_data); 1462 (void)printf(" flags: "); 1463 bprintf(stdout, rtm->rtm_flags, routeflags); 1464 1465 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1466 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1467 1468 (void) printf("\n%s\n", "\ 1469 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1470 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1471 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1472 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1473 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1474 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1475 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1476 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1477 if (rtm->rtm_rmx.rmx_expire) 1478 rtm->rtm_rmx.rmx_expire -= time(0); 1479 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1480 #undef lock 1481 #undef msec 1482 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1483 if (verbose) 1484 pmsg_common(rtm); 1485 else if (rtm->rtm_addrs &~ RTA_IGN) { 1486 (void) printf("sockaddrs: "); 1487 bprintf(stdout, rtm->rtm_addrs, addrnames); 1488 putchar('\n'); 1489 } 1490 #undef RTA_IGN 1491 } 1492 1493 void 1494 pmsg_common(rtm) 1495 register struct rt_msghdr *rtm; 1496 { 1497 (void) printf("\nlocks: "); 1498 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1499 (void) printf(" inits: "); 1500 bprintf(stdout, rtm->rtm_inits, metricnames); 1501 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1502 } 1503 1504 void 1505 pmsg_addrs(cp, addrs) 1506 char *cp; 1507 int addrs; 1508 { 1509 register struct sockaddr *sa; 1510 int i; 1511 1512 if (addrs == 0) { 1513 (void) putchar('\n'); 1514 return; 1515 } 1516 (void) printf("\nsockaddrs: "); 1517 bprintf(stdout, addrs, addrnames); 1518 (void) putchar('\n'); 1519 for (i = 1; i; i <<= 1) 1520 if (i & addrs) { 1521 sa = (struct sockaddr *)cp; 1522 (void) printf(" %s", routename(sa)); 1523 ADVANCE(cp, sa); 1524 } 1525 (void) putchar('\n'); 1526 (void) fflush(stdout); 1527 } 1528 1529 void 1530 bprintf(fp, b, s) 1531 register FILE *fp; 1532 register int b; 1533 register u_char *s; 1534 { 1535 register int i; 1536 int gotsome = 0; 1537 1538 if (b == 0) 1539 return; 1540 while ((i = *s++) != 0) { 1541 if (b & (1 << (i-1))) { 1542 if (gotsome == 0) 1543 i = '<'; 1544 else 1545 i = ','; 1546 (void) putc(i, fp); 1547 gotsome = 1; 1548 for (; (i = *s) > 32; s++) 1549 (void) putc(i, fp); 1550 } else 1551 while (*s > 32) 1552 s++; 1553 } 1554 if (gotsome) 1555 (void) putc('>', fp); 1556 } 1557 1558 int 1559 keyword(cp) 1560 char *cp; 1561 { 1562 register struct keytab *kt = keywords; 1563 1564 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1565 kt++; 1566 return kt->kt_i; 1567 } 1568 1569 void 1570 sodump(su, which) 1571 register sup su; 1572 char *which; 1573 { 1574 switch (su->sa.sa_family) { 1575 case AF_LINK: 1576 (void) printf("%s: link %s; ", 1577 which, link_ntoa(&su->sdl)); 1578 break; 1579 case AF_INET: 1580 (void) printf("%s: inet %s; ", 1581 which, inet_ntoa(su->sin.sin_addr)); 1582 break; 1583 case AF_APPLETALK: 1584 (void) printf("%s: atalk %s; ", 1585 which, atalk_ntoa(su->sat.sat_addr)); 1586 break; 1587 #ifdef NS 1588 case AF_NS: 1589 (void) printf("%s: xns %s; ", 1590 which, ns_ntoa(su->sns.sns_addr)); 1591 break; 1592 #endif 1593 } 1594 (void) fflush(stdout); 1595 } 1596 1597 /* States*/ 1598 #define VIRGIN 0 1599 #define GOTONE 1 1600 #define GOTTWO 2 1601 /* Inputs */ 1602 #define DIGIT (4*0) 1603 #define END (4*1) 1604 #define DELIM (4*2) 1605 1606 void 1607 sockaddr(addr, sa) 1608 register char *addr; 1609 register struct sockaddr *sa; 1610 { 1611 register char *cp = (char *)sa; 1612 int size = sa->sa_len; 1613 char *cplim = cp + size; 1614 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1615 1616 bzero(cp, size); 1617 cp++; 1618 do { 1619 if ((*addr >= '0') && (*addr <= '9')) { 1620 new = *addr - '0'; 1621 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1622 new = *addr - 'a' + 10; 1623 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1624 new = *addr - 'A' + 10; 1625 } else if (*addr == 0) 1626 state |= END; 1627 else 1628 state |= DELIM; 1629 addr++; 1630 switch (state /* | INPUT */) { 1631 case GOTTWO | DIGIT: 1632 *cp++ = byte; /*FALLTHROUGH*/ 1633 case VIRGIN | DIGIT: 1634 state = GOTONE; byte = new; continue; 1635 case GOTONE | DIGIT: 1636 state = GOTTWO; byte = new + (byte << 4); continue; 1637 default: /* | DELIM */ 1638 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1639 case GOTONE | END: 1640 case GOTTWO | END: 1641 *cp++ = byte; /* FALLTHROUGH */ 1642 case VIRGIN | END: 1643 break; 1644 } 1645 break; 1646 } while (cp < cplim); 1647 sa->sa_len = cp - (char *)sa; 1648 } 1649 1650 int 1651 atalk_aton(const char *text, struct at_addr *addr) 1652 { 1653 u_int net, node; 1654 1655 if (sscanf(text, "%u.%u", &net, &node) != 2 1656 || net > 0xffff || node > 0xff) 1657 return(0); 1658 addr->s_net = htons(net); 1659 addr->s_node = node; 1660 return(1); 1661 } 1662 1663 char * 1664 atalk_ntoa(struct at_addr at) 1665 { 1666 static char buf[20]; 1667 1668 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1669 return(buf); 1670 } 1671