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 1.7 2004/03/23 18:25:51 dillon 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 #include "extern.h" 70 #include "keywords.h" 71 72 struct ortentry route; 73 union sockunion { 74 struct sockaddr sa; 75 struct sockaddr_in sin; 76 #ifdef INET6 77 struct sockaddr_in6 sin6; 78 #endif 79 struct sockaddr_at sat; 80 #ifdef NS 81 struct sockaddr_ns sns; 82 #endif 83 struct sockaddr_dl sdl; 84 struct sockaddr_inarp sinarp; 85 struct sockaddr_storage ss; /* added to avoid memory overrun */ 86 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 87 88 typedef union sockunion *sup; 89 90 int pid, rtm_addrs; 91 int s; 92 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 93 int iflag, verbose, aflen = sizeof(struct sockaddr_in); 94 int wflag; 95 int locking, lockrest, debugonly; 96 struct rt_metrics rt_metrics; 97 u_long rtm_inits; 98 uid_t uid; 99 100 int atalk_aton(const char *, struct at_addr *); 101 char *atalk_ntoa(struct at_addr); 102 char *netname(struct sockaddr *); 103 void flushroutes(int, char **); 104 void newroute(int, char **); 105 void monitor(void); 106 void sockaddr(char *, struct sockaddr *); 107 void sodump(sup, char *); 108 void bprintf(FILE *, int, u_char *); 109 void print_getmsg(struct rt_msghdr *, int); 110 void print_rtmsg(struct rt_msghdr *, int); 111 void pmsg_common(struct rt_msghdr *); 112 void pmsg_addrs(char *, int); 113 void mask_addr(void); 114 #ifdef INET6 115 static int inet6_makenetandmask(struct sockaddr_in6 *, char *); 116 #endif 117 int getaddr(int, char *, struct hostent **); 118 int rtmsg(int, int); 119 int x25_makemask(); 120 int prefixlen(char *); 121 extern char *iso_ntoa(); 122 123 void usage(const char *) __dead2; 124 125 void 126 usage(const char *cp) 127 { 128 if (cp) 129 warnx("bad keyword: %s", cp); 130 fprintf(stderr, "usage: route [-dnqtv] command [[modifiers] args]\n"); 131 exit(EX_USAGE); 132 /* NOTREACHED */ 133 } 134 135 #define ROUNDUP(a) \ 136 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 137 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 138 139 int 140 main(int argc, char **argv) 141 { 142 int ch; 143 144 if (argc < 2) 145 usage((char *)NULL); 146 147 while ((ch = getopt(argc, argv, "wnqdtv")) != -1) 148 switch(ch) { 149 case 'w': 150 wflag = 1; 151 break; 152 case 'n': 153 nflag = 1; 154 break; 155 case 'q': 156 qflag = 1; 157 break; 158 case 'v': 159 verbose = 1; 160 break; 161 case 't': 162 tflag = 1; 163 break; 164 case 'd': 165 debugonly = 1; 166 break; 167 case '?': 168 default: 169 usage((char *)NULL); 170 } 171 argc -= optind; 172 argv += optind; 173 174 pid = getpid(); 175 uid = geteuid(); 176 if (tflag) 177 s = open(_PATH_DEVNULL, O_WRONLY, 0); 178 else 179 s = socket(PF_ROUTE, SOCK_RAW, 0); 180 if (s < 0) 181 err(EX_OSERR, "socket"); 182 if (*argv) 183 switch (keyword(*argv)) { 184 case K_GET: 185 uid = 0; 186 /* FALLTHROUGH */ 187 188 case K_CHANGE: 189 case K_ADD: 190 case K_DELETE: 191 newroute(argc, argv); 192 /* NOTREACHED */ 193 194 case K_SHOW: 195 show(argc, argv); 196 return(0); 197 198 case K_MONITOR: 199 monitor(); 200 /* NOTREACHED */ 201 202 case K_FLUSH: 203 flushroutes(argc, argv); 204 exit(0); 205 /* NOTREACHED */ 206 } 207 usage(*argv); 208 /* NOTREACHED */ 209 } 210 211 /* 212 * Purge all entries in the routing tables not 213 * associated with network interfaces. 214 */ 215 void 216 flushroutes(int argc, char **argv) 217 { 218 size_t needed; 219 int mib[6], rlen, seqno; 220 char *buf, *next, *lim; 221 struct rt_msghdr *rtm; 222 223 if (uid) { 224 errx(EX_NOPERM, "must be root to alter routing table"); 225 } 226 shutdown(s, 0); /* Don't want to read back our messages */ 227 if (argc > 1) { 228 argv++; 229 if (argc == 2 && **argv == '-') 230 switch (keyword(*argv + 1)) { 231 case K_INET: 232 af = AF_INET; 233 break; 234 #ifdef INET6 235 case K_INET6: 236 af = AF_INET6; 237 break; 238 #endif 239 case K_ATALK: 240 af = AF_APPLETALK; 241 break; 242 #ifdef NS 243 case K_XNS: 244 af = AF_NS; 245 break; 246 #endif 247 case K_LINK: 248 af = AF_LINK; 249 break; 250 default: 251 goto bad; 252 } else 253 bad: usage(*argv); 254 } 255 mib[0] = CTL_NET; 256 mib[1] = PF_ROUTE; 257 mib[2] = 0; /* protocol */ 258 mib[3] = 0; /* wildcard address family */ 259 mib[4] = NET_RT_DUMP; 260 mib[5] = 0; /* no flags */ 261 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 262 err(EX_OSERR, "route-sysctl-estimate"); 263 if ((buf = malloc(needed)) == NULL) 264 errx(EX_OSERR, "malloc failed"); 265 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 266 err(EX_OSERR, "route-sysctl-get"); 267 lim = buf + needed; 268 if (verbose) 269 printf("Examining routing table from sysctl\n"); 270 seqno = 0; /* ??? */ 271 for (next = buf; next < lim; next += rtm->rtm_msglen) { 272 rtm = (struct rt_msghdr *)next; 273 if (verbose) 274 print_rtmsg(rtm, rtm->rtm_msglen); 275 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 276 continue; 277 if (af) { 278 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 279 280 if (sa->sa_family != af) 281 continue; 282 } 283 if (debugonly) 284 continue; 285 rtm->rtm_type = RTM_DELETE; 286 rtm->rtm_seq = seqno; 287 rlen = write(s, next, rtm->rtm_msglen); 288 if (rlen < (int)rtm->rtm_msglen) { 289 warn("write to routing socket"); 290 printf("got only %d for rlen\n", rlen); 291 break; 292 } 293 seqno++; 294 if (qflag) 295 continue; 296 if (verbose) { 297 print_rtmsg(rtm, rlen); 298 } else { 299 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 300 if (wflag) { 301 printf("%-20s ", rtm->rtm_flags & RTF_HOST ? 302 routename(sa) : netname(sa)); 303 } else { 304 printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 305 routename(sa) : netname(sa)); 306 } 307 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + 308 (char *)sa); 309 if (wflag) { 310 printf("%-20s ", routename(sa)); 311 } else { 312 printf("%-20.20s ", routename(sa)); 313 } 314 printf("done\n"); 315 } 316 } 317 } 318 319 char * 320 routename(struct sockaddr *sa) 321 { 322 char *cp; 323 static char line[MAXHOSTNAMELEN + 1]; 324 struct hostent *hp; 325 static char domain[MAXHOSTNAMELEN + 1]; 326 static int first = 1; 327 #ifdef NS 328 char *ns_print(); 329 #endif 330 331 if (first) { 332 first = 0; 333 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 334 (cp = strchr(domain, '.'))) { 335 domain[MAXHOSTNAMELEN] = '\0'; 336 strcpy(domain, cp + 1); 337 } else 338 domain[0] = 0; 339 } 340 341 if (sa->sa_len == 0) 342 strcpy(line, "default"); 343 else switch (sa->sa_family) { 344 345 case AF_INET: 346 { struct in_addr in; 347 in = ((struct sockaddr_in *)sa)->sin_addr; 348 349 cp = 0; 350 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 351 cp = "default"; 352 if (cp == 0 && !nflag) { 353 hp = gethostbyaddr((char *)&in, sizeof(struct in_addr), 354 AF_INET); 355 if (hp) { 356 if ((cp = strchr(hp->h_name, '.')) && !wflag && 357 !strcmp(cp + 1, domain)) 358 *cp = 0; 359 cp = hp->h_name; 360 } 361 } 362 if (cp) { 363 strncpy(line, cp, sizeof(line) - 1); 364 line[sizeof(line) - 1] = '\0'; 365 } else 366 sprintf(line, "%s", inet_ntoa(in)); 367 break; 368 } 369 370 #ifdef INET6 371 case AF_INET6: 372 { 373 struct sockaddr_in6 sin6; /* use static var for safety */ 374 int niflags = 0; 375 #ifdef NI_WITHSCOPEID 376 niflags = NI_WITHSCOPEID; 377 #endif 378 379 memset(&sin6, 0, sizeof(sin6)); 380 memcpy(&sin6, sa, sa->sa_len); 381 sin6.sin6_len = sizeof(struct sockaddr_in6); 382 sin6.sin6_family = AF_INET6; 383 #ifdef __KAME__ 384 if (sa->sa_len == sizeof(struct sockaddr_in6) && 385 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 386 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 387 sin6.sin6_scope_id == 0) { 388 sin6.sin6_scope_id = 389 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 390 sin6.sin6_addr.s6_addr[2] = 0; 391 sin6.sin6_addr.s6_addr[3] = 0; 392 } 393 #endif 394 if (nflag) 395 niflags |= NI_NUMERICHOST; 396 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 397 line, sizeof(line), NULL, 0, niflags) != 0) 398 strncpy(line, "invalid", sizeof(line)); 399 400 return(line); 401 } 402 #endif 403 404 case AF_APPLETALK: 405 snprintf(line, sizeof(line), "atalk %s", 406 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 407 break; 408 409 #ifdef NS 410 case AF_NS: 411 return(ns_print((struct sockaddr_ns *)sa)); 412 #endif 413 414 case AF_LINK: 415 return(link_ntoa((struct sockaddr_dl *)sa)); 416 417 default: 418 { u_short *s = (u_short *)sa; 419 u_short *slim = s + ((sa->sa_len + 1) >> 1); 420 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 421 char *cpe = line + sizeof(line); 422 423 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 424 cp += snprintf(cp, cpe - cp, " %x", *s); 425 break; 426 } 427 } 428 return(line); 429 } 430 431 /* 432 * Return the name of the network whose address is given. 433 * The address is assumed to be that of a net or subnet, not a host. 434 */ 435 char * 436 netname(struct sockaddr *sa) 437 { 438 char *cp = 0; 439 static char line[MAXHOSTNAMELEN + 1]; 440 struct netent *np = 0; 441 u_long net, mask; 442 u_long i; 443 int subnetshift; 444 #ifdef NS 445 char *ns_print(); 446 #endif 447 448 switch (sa->sa_family) { 449 450 case AF_INET: 451 { struct in_addr in; 452 in = ((struct sockaddr_in *)sa)->sin_addr; 453 454 i = in.s_addr = ntohl(in.s_addr); 455 if (in.s_addr == 0) 456 cp = "default"; 457 else if (!nflag) { 458 if (IN_CLASSA(i)) { 459 mask = IN_CLASSA_NET; 460 subnetshift = 8; 461 } else if (IN_CLASSB(i)) { 462 mask = IN_CLASSB_NET; 463 subnetshift = 8; 464 } else { 465 mask = IN_CLASSC_NET; 466 subnetshift = 4; 467 } 468 /* 469 * If there are more bits than the standard mask 470 * would suggest, subnets must be in use. 471 * Guess at the subnet mask, assuming reasonable 472 * width subnet fields. 473 */ 474 while (in.s_addr &~ mask) 475 mask = (long)mask >> subnetshift; 476 net = in.s_addr & mask; 477 while ((mask & 1) == 0) 478 mask >>= 1, net >>= 1; 479 np = getnetbyaddr(net, AF_INET); 480 if (np) 481 cp = np->n_name; 482 } 483 #define C(x) (unsigned)((x) & 0xff) 484 if (cp) 485 strncpy(line, cp, sizeof(line)); 486 else if ((in.s_addr & 0xffffff) == 0) 487 sprintf(line, "%u", C(in.s_addr >> 24)); 488 else if ((in.s_addr & 0xffff) == 0) 489 sprintf(line, "%u.%u", C(in.s_addr >> 24), 490 C(in.s_addr >> 16)); 491 else if ((in.s_addr & 0xff) == 0) 492 sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 493 C(in.s_addr >> 16), C(in.s_addr >> 8)); 494 else 495 sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 496 C(in.s_addr >> 16), C(in.s_addr >> 8), 497 C(in.s_addr)); 498 #undef C 499 break; 500 } 501 502 #ifdef INET6 503 case AF_INET6: 504 { 505 struct sockaddr_in6 sin6; /* use static var for safety */ 506 int niflags = 0; 507 #ifdef NI_WITHSCOPEID 508 niflags = NI_WITHSCOPEID; 509 #endif 510 511 memset(&sin6, 0, sizeof(sin6)); 512 memcpy(&sin6, sa, sa->sa_len); 513 sin6.sin6_len = sizeof(struct sockaddr_in6); 514 sin6.sin6_family = AF_INET6; 515 #ifdef __KAME__ 516 if (sa->sa_len == sizeof(struct sockaddr_in6) && 517 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 518 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 519 sin6.sin6_scope_id == 0) { 520 sin6.sin6_scope_id = 521 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 522 sin6.sin6_addr.s6_addr[2] = 0; 523 sin6.sin6_addr.s6_addr[3] = 0; 524 } 525 #endif 526 if (nflag) 527 niflags |= NI_NUMERICHOST; 528 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 529 line, sizeof(line), NULL, 0, niflags) != 0) 530 strncpy(line, "invalid", sizeof(line)); 531 532 return(line); 533 } 534 #endif 535 536 case AF_APPLETALK: 537 snprintf(line, sizeof(line), "atalk %s", 538 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 539 break; 540 541 #ifdef NS 542 case AF_NS: 543 return(ns_print((struct sockaddr_ns *)sa)); 544 break; 545 #endif 546 547 case AF_LINK: 548 return(link_ntoa((struct sockaddr_dl *)sa)); 549 550 551 default: 552 { u_short *s = (u_short *)sa->sa_data; 553 u_short *slim = s + ((sa->sa_len + 1)>>1); 554 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 555 char *cpe = line + sizeof(line); 556 557 while (s < slim && cp < cpe) 558 cp += snprintf(cp, cpe - cp, " %x", *s++); 559 break; 560 } 561 } 562 return(line); 563 } 564 565 void 566 set_metric(char *value, int key) 567 { 568 int flag = 0; 569 u_long noval, *valp = &noval; 570 571 switch (key) { 572 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 573 caseof(K_MTU, RTV_MTU, rmx_mtu); 574 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 575 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 576 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 577 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 578 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 579 caseof(K_RTT, RTV_RTT, rmx_rtt); 580 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 581 } 582 rtm_inits |= flag; 583 if (lockrest || locking) 584 rt_metrics.rmx_locks |= flag; 585 if (locking) 586 locking = 0; 587 *valp = atoi(value); 588 } 589 590 void 591 newroute(int argc, char **argv) 592 { 593 char *cmd, *dest = "", *gateway = "", *err; 594 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC; 595 int key; 596 struct hostent *hp = 0; 597 598 if (uid) { 599 errx(EX_NOPERM, "must be root to alter routing table"); 600 } 601 cmd = argv[0]; 602 if (*cmd != 'g') 603 shutdown(s, 0); /* Don't want to read back our messages */ 604 while (--argc > 0) { 605 if (**(++argv)== '-') { 606 switch (key = keyword(1 + *argv)) { 607 case K_LINK: 608 af = AF_LINK; 609 aflen = sizeof(struct sockaddr_dl); 610 break; 611 case K_INET: 612 af = AF_INET; 613 aflen = sizeof(struct sockaddr_in); 614 break; 615 #ifdef INET6 616 case K_INET6: 617 af = AF_INET6; 618 aflen = sizeof(struct sockaddr_in6); 619 break; 620 #endif 621 case K_ATALK: 622 af = AF_APPLETALK; 623 aflen = sizeof(struct sockaddr_at); 624 break; 625 case K_SA: 626 af = PF_ROUTE; 627 aflen = sizeof(union sockunion); 628 break; 629 #ifdef NS 630 case K_XNS: 631 af = AF_NS; 632 aflen = sizeof(struct sockaddr_ns); 633 break; 634 #endif 635 case K_IFACE: 636 case K_INTERFACE: 637 iflag++; 638 break; 639 case K_NOSTATIC: 640 flags &= ~RTF_STATIC; 641 break; 642 case K_LLINFO: 643 flags |= RTF_LLINFO; 644 break; 645 case K_LOCK: 646 locking = 1; 647 break; 648 case K_LOCKREST: 649 lockrest = 1; 650 break; 651 case K_HOST: 652 forcehost++; 653 break; 654 case K_REJECT: 655 flags |= RTF_REJECT; 656 break; 657 case K_BLACKHOLE: 658 flags |= RTF_BLACKHOLE; 659 break; 660 case K_PROTO1: 661 flags |= RTF_PROTO1; 662 break; 663 case K_PROTO2: 664 flags |= RTF_PROTO2; 665 break; 666 case K_PROXY: 667 proxy = 1; 668 break; 669 case K_CLONING: 670 flags |= RTF_CLONING; 671 break; 672 case K_XRESOLVE: 673 flags |= RTF_XRESOLVE; 674 break; 675 case K_STATIC: 676 flags |= RTF_STATIC; 677 break; 678 case K_IFA: 679 if (!--argc) 680 usage((char *)NULL); 681 getaddr(RTA_IFA, *++argv, 0); 682 break; 683 case K_IFP: 684 if (!--argc) 685 usage((char *)NULL); 686 getaddr(RTA_IFP, *++argv, 0); 687 break; 688 case K_GENMASK: 689 if (!--argc) 690 usage((char *)NULL); 691 getaddr(RTA_GENMASK, *++argv, 0); 692 break; 693 case K_GATEWAY: 694 if (!--argc) 695 usage((char *)NULL); 696 getaddr(RTA_GATEWAY, *++argv, 0); 697 break; 698 case K_DST: 699 if (!--argc) 700 usage((char *)NULL); 701 ishost = getaddr(RTA_DST, *++argv, &hp); 702 dest = *argv; 703 break; 704 case K_NETMASK: 705 if (!--argc) 706 usage((char *)NULL); 707 getaddr(RTA_NETMASK, *++argv, 0); 708 /* FALLTHROUGH */ 709 case K_NET: 710 forcenet++; 711 break; 712 case K_PREFIXLEN: 713 if (!--argc) 714 usage((char *)NULL); 715 if (prefixlen(*++argv) == -1) { 716 forcenet = 0; 717 ishost = 1; 718 } else { 719 forcenet = 1; 720 ishost = 0; 721 } 722 break; 723 case K_MTU: 724 case K_HOPCOUNT: 725 case K_EXPIRE: 726 case K_RECVPIPE: 727 case K_SENDPIPE: 728 case K_SSTHRESH: 729 case K_RTT: 730 case K_RTTVAR: 731 if (!--argc) 732 usage((char *)NULL); 733 set_metric(*++argv, key); 734 break; 735 default: 736 usage(1+*argv); 737 } 738 } else { 739 if ((rtm_addrs & RTA_DST) == 0) { 740 dest = *argv; 741 ishost = getaddr(RTA_DST, *argv, &hp); 742 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 743 gateway = *argv; 744 getaddr(RTA_GATEWAY, *argv, &hp); 745 } else { 746 getaddr(RTA_NETMASK, *argv, 0); 747 forcenet = 1; 748 } 749 } 750 } 751 if (forcehost) { 752 ishost = 1; 753 #ifdef INET6 754 if (af == AF_INET6) { 755 rtm_addrs &= ~RTA_NETMASK; 756 memset((void *)&so_mask, 0, sizeof(so_mask)); 757 } 758 #endif 759 } 760 if (forcenet) 761 ishost = 0; 762 flags |= RTF_UP; 763 if (ishost) 764 flags |= RTF_HOST; 765 if (iflag == 0) 766 flags |= RTF_GATEWAY; 767 if (proxy) { 768 so_dst.sinarp.sin_other = SIN_PROXY; 769 flags |= RTF_ANNOUNCE; 770 } 771 for (attempts = 1; ; attempts++) { 772 errno = 0; 773 if ((ret = rtmsg(*cmd, flags)) == 0) 774 break; 775 if (errno != ENETUNREACH && errno != ESRCH) 776 break; 777 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 778 hp->h_addr_list++; 779 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 780 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 781 } else 782 break; 783 } 784 if (*cmd == 'g') 785 exit(0); 786 if (!qflag) { 787 oerrno = errno; 788 printf("%s %s %s", cmd, ishost? "host" : "net", dest); 789 if (*gateway) { 790 printf(": gateway %s", gateway); 791 if (attempts > 1 && ret == 0 && af == AF_INET) 792 printf(" (%s)", 793 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 794 } 795 if (ret == 0) { 796 printf("\n"); 797 } else { 798 switch (oerrno) { 799 case ESRCH: 800 err = "not in table"; 801 break; 802 case EBUSY: 803 err = "entry in use"; 804 break; 805 case ENOBUFS: 806 err = "routing table overflow"; 807 break; 808 case EDQUOT: /* handle recursion avoidance in 809 rt_setgate() */ 810 err = "gateway uses the same route"; 811 break; 812 default: 813 err = strerror(oerrno); 814 break; 815 } 816 printf(": %s\n", err); 817 } 818 } 819 exit(ret != 0); 820 } 821 822 void 823 inet_makenetandmask(u_long net, struct sockaddr_in *sin, u_long bits) 824 { 825 u_long addr, mask = 0; 826 char *cp; 827 828 rtm_addrs |= RTA_NETMASK; 829 if (net == 0) 830 mask = addr = 0; 831 else if (net < 128) { 832 addr = net << IN_CLASSA_NSHIFT; 833 mask = IN_CLASSA_NET; 834 } else if (net < 65536) { 835 addr = net << IN_CLASSB_NSHIFT; 836 mask = IN_CLASSB_NET; 837 } else if (net < 16777216L) { 838 addr = net << IN_CLASSC_NSHIFT; 839 mask = IN_CLASSC_NET; 840 } else { 841 addr = net; 842 if ((addr & IN_CLASSA_HOST) == 0) 843 mask = IN_CLASSA_NET; 844 else if ((addr & IN_CLASSB_HOST) == 0) 845 mask = IN_CLASSB_NET; 846 else if ((addr & IN_CLASSC_HOST) == 0) 847 mask = IN_CLASSC_NET; 848 else 849 mask = -1; 850 } 851 if (bits) 852 mask = 0xffffffff << (32 - bits); 853 sin->sin_addr.s_addr = htonl(addr); 854 sin = &so_mask.sin; 855 sin->sin_addr.s_addr = htonl(mask); 856 sin->sin_len = 0; 857 sin->sin_family = 0; 858 cp = (char *)(&sin->sin_addr + 1); 859 while (*--cp == 0 && cp > (char *)sin) 860 ; 861 sin->sin_len = 1 + cp - (char *)sin; 862 } 863 864 #ifdef INET6 865 /* 866 * XXX the function may need more improvement... 867 */ 868 static int 869 inet6_makenetandmask(struct sockaddr_in6 *sin6, char *plen) 870 { 871 struct in6_addr in6; 872 873 if (!plen) { 874 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 875 sin6->sin6_scope_id == 0) { 876 plen = "0"; 877 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 878 /* aggregatable global unicast - RFC2374 */ 879 memset(&in6, 0, sizeof(in6)); 880 if (!memcmp(&sin6->sin6_addr.s6_addr[8], 881 &in6.s6_addr[8], 8)) 882 plen = "64"; 883 } 884 } 885 886 if (!plen || strcmp(plen, "128") == 0) 887 return(1); 888 rtm_addrs |= RTA_NETMASK; 889 prefixlen(plen); 890 return(0); 891 } 892 #endif 893 894 /* 895 * Interpret an argument as a network address of some kind, 896 * returning 1 if a host address, 0 if a network address. 897 */ 898 int 899 getaddr(int which, char *s, struct hostent **hpp) 900 { 901 sup su; 902 struct hostent *hp; 903 struct netent *np; 904 u_long val; 905 char *q; 906 int afamily; /* local copy of af so we can change it */ 907 908 if (af == 0) { 909 af = AF_INET; 910 aflen = sizeof(struct sockaddr_in); 911 } 912 afamily = af; 913 rtm_addrs |= which; 914 switch (which) { 915 case RTA_DST: 916 su = &so_dst; 917 break; 918 case RTA_GATEWAY: 919 su = &so_gate; 920 if (iflag) { 921 struct ifaddrs *ifap, *ifa; 922 struct sockaddr_dl *sdl = NULL; 923 924 if (getifaddrs(&ifap)) 925 err(1, "getifaddrs"); 926 927 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 928 if (ifa->ifa_addr->sa_family != AF_LINK) 929 continue; 930 931 if (strcmp(s, ifa->ifa_name)) 932 continue; 933 934 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 935 } 936 /* If we found it, then use it */ 937 if (sdl) { 938 /* 939 * Copy is safe since we have a 940 * sockaddr_storage member in sockunion{}. 941 * Note that we need to copy before calling 942 * freeifaddrs(). 943 */ 944 memcpy(&su->sdl, sdl, sdl->sdl_len); 945 } 946 freeifaddrs(ifap); 947 if (sdl) 948 return(1); 949 } 950 break; 951 case RTA_NETMASK: 952 su = &so_mask; 953 break; 954 case RTA_GENMASK: 955 su = &so_genmask; 956 break; 957 case RTA_IFP: 958 su = &so_ifp; 959 afamily = AF_LINK; 960 break; 961 case RTA_IFA: 962 su = &so_ifa; 963 break; 964 default: 965 usage("internal error"); 966 /*NOTREACHED*/ 967 } 968 su->sa.sa_len = aflen; 969 su->sa.sa_family = afamily; /* cases that don't want it have left 970 already */ 971 if (strcmp(s, "default") == 0) { 972 /* 973 * Default is net 0.0.0.0/0 974 */ 975 switch (which) { 976 case RTA_DST: 977 forcenet++; 978 /* bzero(su, sizeof(*su)); *//* for readability */ 979 getaddr(RTA_NETMASK, s, 0); 980 break; 981 case RTA_NETMASK: 982 case RTA_GENMASK: 983 /* bzero(su, sizeof(*su)); *//* for readability */ 984 break; 985 } 986 return(0); 987 } 988 switch (afamily) { 989 #ifdef INET6 990 case AF_INET6: 991 { 992 struct addrinfo hints, *res; 993 994 q = NULL; 995 if (which == RTA_DST && (q = strchr(s, '/')) != NULL) 996 *q = '\0'; 997 memset(&hints, 0, sizeof(hints)); 998 hints.ai_family = afamily; /*AF_INET6*/ 999 hints.ai_flags = AI_NUMERICHOST; 1000 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1001 if (getaddrinfo(s, "0", &hints, &res) != 0 || 1002 res->ai_family != AF_INET6 || 1003 res->ai_addrlen != sizeof(su->sin6)) { 1004 fprintf(stderr, "%s: bad value\n", s); 1005 exit(1); 1006 } 1007 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1008 #ifdef __KAME__ 1009 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1010 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) && 1011 su->sin6.sin6_scope_id) { 1012 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1013 htons(su->sin6.sin6_scope_id); 1014 su->sin6.sin6_scope_id = 0; 1015 } 1016 #endif 1017 freeaddrinfo(res); 1018 if (q != NULL) 1019 *q++ = '/'; 1020 if (which == RTA_DST) 1021 return(inet6_makenetandmask(&su->sin6, q)); 1022 return(0); 1023 } 1024 #endif /* INET6 */ 1025 1026 #ifdef NS 1027 case AF_NS: 1028 if (which == RTA_DST) { 1029 extern short ns_bh[3]; 1030 struct sockaddr_ns *sms = &(so_mask.sns); 1031 memset(sms, 0, sizeof(*sms)); 1032 sms->sns_family = 0; 1033 sms->sns_len = 6; 1034 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1035 rtm_addrs |= RTA_NETMASK; 1036 } 1037 su->sns.sns_addr = ns_addr(s); 1038 return(!ns_nullhost(su->sns.sns_addr)); 1039 #endif 1040 1041 1042 case AF_APPLETALK: 1043 if (!atalk_aton(s, &su->sat.sat_addr)) 1044 errx(EX_NOHOST, "bad address: %s", s); 1045 rtm_addrs |= RTA_NETMASK; 1046 return(forcehost || su->sat.sat_addr.s_node != 0); 1047 1048 case AF_LINK: 1049 link_addr(s, &su->sdl); 1050 return(1); 1051 1052 1053 case PF_ROUTE: 1054 su->sa.sa_len = sizeof(*su); 1055 sockaddr(s, &su->sa); 1056 return(1); 1057 1058 case AF_INET: 1059 default: 1060 break; 1061 } 1062 1063 if (hpp == NULL) 1064 hpp = &hp; 1065 *hpp = NULL; 1066 1067 q = strchr(s,'/'); 1068 if (q && which == RTA_DST) { 1069 *q = '\0'; 1070 if ((val = inet_network(s)) != INADDR_NONE) { 1071 inet_makenetandmask( 1072 val, &su->sin, strtoul(q+1, 0, 0)); 1073 return(0); 1074 } 1075 *q = '/'; 1076 } 1077 if ((which != RTA_DST || forcenet == 0) && 1078 inet_aton(s, &su->sin.sin_addr)) { 1079 val = su->sin.sin_addr.s_addr; 1080 if (which != RTA_DST || 1081 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1082 return(1); 1083 else { 1084 val = ntohl(val); 1085 goto netdone; 1086 } 1087 } 1088 if (which == RTA_DST && forcehost == 0 && 1089 ((val = inet_network(s)) != INADDR_NONE || 1090 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) { 1091 netdone: 1092 inet_makenetandmask(val, &su->sin, 0); 1093 return(0); 1094 } 1095 hp = gethostbyname(s); 1096 if (hp) { 1097 *hpp = hp; 1098 su->sin.sin_family = hp->h_addrtype; 1099 memmove((char *)&su->sin.sin_addr, hp->h_addr, 1100 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1101 return(1); 1102 } 1103 errx(EX_NOHOST, "bad address: %s", s); 1104 } 1105 1106 int 1107 prefixlen(char *s) 1108 { 1109 int len = atoi(s), q, r; 1110 int max; 1111 char *p; 1112 1113 rtm_addrs |= RTA_NETMASK; 1114 switch (af) { 1115 #ifdef INET6 1116 case AF_INET6: 1117 max = 128; 1118 p = (char *)&so_mask.sin6.sin6_addr; 1119 break; 1120 #endif 1121 case AF_INET: 1122 max = 32; 1123 p = (char *)&so_mask.sin.sin_addr; 1124 break; 1125 default: 1126 fprintf(stderr, "prefixlen not supported in this af\n"); 1127 exit(1); 1128 /*NOTREACHED*/ 1129 } 1130 1131 if (len < 0 || max < len) { 1132 fprintf(stderr, "%s: bad value\n", s); 1133 exit(1); 1134 } 1135 1136 q = len >> 3; 1137 r = len & 7; 1138 so_mask.sa.sa_family = af; 1139 so_mask.sa.sa_len = aflen; 1140 memset((void *)p, 0, max / 8); 1141 if (q > 0) 1142 memset((void *)p, 0xff, q); 1143 if (r > 0) 1144 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1145 if (len == max) 1146 return(-1); 1147 else 1148 return(len); 1149 } 1150 1151 #ifdef NS 1152 short ns_nullh[] = {0,0,0}; 1153 short ns_bh[] = {-1,-1,-1}; 1154 1155 char * 1156 ns_print(struct sockaddr_ns *sns) 1157 { 1158 struct ns_addr work; 1159 union { union ns_net net_e; u_long long_e; } net; 1160 u_short port; 1161 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 1162 char *host = ""; 1163 char *p; 1164 u_char *q; 1165 1166 work = sns->sns_addr; 1167 port = ntohs(work.x_port); 1168 work.x_port = 0; 1169 net.net_e = work.x_net; 1170 if (ns_nullhost(work) && net.long_e == 0) { 1171 if (!port) 1172 return("*.*"); 1173 sprintf(mybuf, "*.%XH", port); 1174 return(mybuf); 1175 } 1176 1177 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1178 host = "any"; 1179 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1180 host = "*"; 1181 else { 1182 q = work.x_host.c_host; 1183 sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 1184 q[0], q[1], q[2], q[3], q[4], q[5]); 1185 for (p = chost; *p == '0' && p < chost + 12; p++) 1186 /* void */; 1187 host = p; 1188 } 1189 if (port) 1190 sprintf(cport, ".%XH", htons(port)); 1191 else 1192 *cport = 0; 1193 1194 snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 1195 (unsigned long)ntohl(net.long_e), 1196 host, cport); 1197 return(mybuf); 1198 } 1199 #endif 1200 1201 void 1202 interfaces(void) 1203 { 1204 size_t needed; 1205 int mib[6]; 1206 char *buf, *lim, *next; 1207 struct rt_msghdr *rtm; 1208 1209 mib[0] = CTL_NET; 1210 mib[1] = PF_ROUTE; 1211 mib[2] = 0; /* protocol */ 1212 mib[3] = 0; /* wildcard address family */ 1213 mib[4] = NET_RT_IFLIST; 1214 mib[5] = 0; /* no flags */ 1215 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1216 err(EX_OSERR, "route-sysctl-estimate"); 1217 if ((buf = malloc(needed)) == NULL) 1218 errx(EX_OSERR, "malloc failed"); 1219 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1220 err(EX_OSERR, "actual retrieval of interface table"); 1221 lim = buf + needed; 1222 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1223 rtm = (struct rt_msghdr *)next; 1224 print_rtmsg(rtm, rtm->rtm_msglen); 1225 } 1226 } 1227 1228 void 1229 monitor(void) 1230 { 1231 int n; 1232 char msg[2048]; 1233 1234 verbose = 1; 1235 if (debugonly) { 1236 interfaces(); 1237 exit(0); 1238 } 1239 for (;;) { 1240 time_t now; 1241 n = read(s, msg, 2048); 1242 now = time(NULL); 1243 printf("\ngot message of size %d on %s", n, ctime(&now)); 1244 print_rtmsg((struct rt_msghdr *)msg, n); 1245 } 1246 } 1247 1248 struct { 1249 struct rt_msghdr m_rtm; 1250 char m_space[512]; 1251 } m_rtmsg; 1252 1253 int 1254 rtmsg(int cmd, int flags) 1255 { 1256 static int seq; 1257 int rlen; 1258 char *cp = m_rtmsg.m_space; 1259 int l; 1260 1261 #define NEXTADDR(w, u) \ 1262 if (rtm_addrs & (w)) {\ 1263 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1264 if (verbose) sodump(&(u),"u");\ 1265 } 1266 1267 errno = 0; 1268 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1269 if (cmd == 'a') 1270 cmd = RTM_ADD; 1271 else if (cmd == 'c') 1272 cmd = RTM_CHANGE; 1273 else if (cmd == 'g') { 1274 cmd = RTM_GET; 1275 if (so_ifp.sa.sa_family == 0) { 1276 so_ifp.sa.sa_family = AF_LINK; 1277 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1278 rtm_addrs |= RTA_IFP; 1279 } 1280 } else 1281 cmd = RTM_DELETE; 1282 #define rtm m_rtmsg.m_rtm 1283 rtm.rtm_type = cmd; 1284 rtm.rtm_flags = flags; 1285 rtm.rtm_version = RTM_VERSION; 1286 rtm.rtm_seq = ++seq; 1287 rtm.rtm_addrs = rtm_addrs; 1288 rtm.rtm_rmx = rt_metrics; 1289 rtm.rtm_inits = rtm_inits; 1290 1291 if (rtm_addrs & RTA_NETMASK) 1292 mask_addr(); 1293 NEXTADDR(RTA_DST, so_dst); 1294 NEXTADDR(RTA_GATEWAY, so_gate); 1295 NEXTADDR(RTA_NETMASK, so_mask); 1296 NEXTADDR(RTA_GENMASK, so_genmask); 1297 NEXTADDR(RTA_IFP, so_ifp); 1298 NEXTADDR(RTA_IFA, so_ifa); 1299 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1300 if (verbose) 1301 print_rtmsg(&rtm, l); 1302 if (debugonly) 1303 return(0); 1304 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1305 warn("writing to routing socket"); 1306 return(-1); 1307 } 1308 if (cmd == RTM_GET) { 1309 do { 1310 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1311 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1312 if (l < 0) 1313 warn("read from routing socket"); 1314 else 1315 print_getmsg(&rtm, l); 1316 } 1317 #undef rtm 1318 return(0); 1319 } 1320 1321 void 1322 mask_addr(void) 1323 { 1324 int olen = so_mask.sa.sa_len; 1325 char *cp1 = olen + (char *)&so_mask, *cp2; 1326 1327 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1328 if (*--cp1 != 0) { 1329 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1330 break; 1331 } 1332 if ((rtm_addrs & RTA_DST) == 0) 1333 return; 1334 switch (so_dst.sa.sa_family) { 1335 #ifdef NS 1336 case AF_NS: 1337 #endif 1338 case AF_INET: 1339 #ifdef INET6 1340 case AF_INET6: 1341 #endif 1342 case AF_APPLETALK: 1343 case 0: 1344 return; 1345 } 1346 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1347 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1348 while (cp2 > cp1) 1349 *--cp2 = 0; 1350 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1351 while (cp1 > so_dst.sa.sa_data) 1352 *--cp1 &= *--cp2; 1353 } 1354 1355 char *msgtypes[] = { 1356 "", 1357 "RTM_ADD: Add Route", 1358 "RTM_DELETE: Delete Route", 1359 "RTM_CHANGE: Change Metrics or flags", 1360 "RTM_GET: Report Metrics", 1361 "RTM_LOSING: Kernel Suspects Partitioning", 1362 "RTM_REDIRECT: Told to use different route", 1363 "RTM_MISS: Lookup failed on this address", 1364 "RTM_LOCK: fix specified metrics", 1365 "RTM_OLDADD: caused by SIOCADDRT", 1366 "RTM_OLDDEL: caused by SIOCDELRT", 1367 "RTM_RESOLVE: Route created by cloning", 1368 "RTM_NEWADDR: address being added to iface", 1369 "RTM_DELADDR: address being removed from iface", 1370 "RTM_IFINFO: iface status change", 1371 "RTM_NEWMADDR: new multicast group membership on iface", 1372 "RTM_DELMADDR: multicast group membership removed from iface", 1373 "RTM_IFANNOUNCE: interface arrival/departure", 1374 0, 1375 }; 1376 1377 char metricnames[] = 1378 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1379 "\1mtu"; 1380 char routeflags[] = 1381 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1382 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1383 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1384 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1385 char ifnetflags[] = 1386 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1387 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1388 "\017LINK2\020MULTICAST"; 1389 char addrnames[] = 1390 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1391 1392 void 1393 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1394 { 1395 struct if_msghdr *ifm; 1396 struct ifa_msghdr *ifam; 1397 #ifdef RTM_NEWMADDR 1398 struct ifma_msghdr *ifmam; 1399 #endif 1400 struct if_announcemsghdr *ifan; 1401 1402 if (verbose == 0) 1403 return; 1404 if (rtm->rtm_version != RTM_VERSION) { 1405 printf("routing message version %d not understood\n", 1406 rtm->rtm_version); 1407 return; 1408 } 1409 if (msgtypes[rtm->rtm_type] != NULL) 1410 printf("%s: ", msgtypes[rtm->rtm_type]); 1411 else 1412 printf("#%d: ", rtm->rtm_type); 1413 printf("len %d, ", rtm->rtm_msglen); 1414 switch (rtm->rtm_type) { 1415 case RTM_IFINFO: 1416 ifm = (struct if_msghdr *)rtm; 1417 printf("if# %d, flags:", ifm->ifm_index); 1418 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1419 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1420 break; 1421 case RTM_NEWADDR: 1422 case RTM_DELADDR: 1423 ifam = (struct ifa_msghdr *)rtm; 1424 printf("metric %d, flags:", ifam->ifam_metric); 1425 bprintf(stdout, ifam->ifam_flags, routeflags); 1426 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1427 break; 1428 #ifdef RTM_NEWMADDR 1429 case RTM_NEWMADDR: 1430 case RTM_DELMADDR: 1431 ifmam = (struct ifma_msghdr *)rtm; 1432 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1433 break; 1434 #endif 1435 case RTM_IFANNOUNCE: 1436 ifan = (struct if_announcemsghdr *)rtm; 1437 printf("if# %d, what: ", ifan->ifan_index); 1438 switch (ifan->ifan_what) { 1439 case IFAN_ARRIVAL: 1440 printf("arrival"); 1441 break; 1442 case IFAN_DEPARTURE: 1443 printf("departure"); 1444 break; 1445 default: 1446 printf("#%d", ifan->ifan_what); 1447 break; 1448 } 1449 printf("\n"); 1450 break; 1451 1452 default: 1453 printf("pid: %ld, seq %d, errno %d, flags:", 1454 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1455 bprintf(stdout, rtm->rtm_flags, routeflags); 1456 pmsg_common(rtm); 1457 } 1458 } 1459 1460 void 1461 print_getmsg(struct rt_msghdr *rtm, int msglen) 1462 { 1463 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1464 struct sockaddr_dl *ifp = NULL; 1465 struct sockaddr *sa; 1466 char *cp; 1467 int i; 1468 1469 printf(" route to: %s\n", routename(&so_dst.sa)); 1470 if (rtm->rtm_version != RTM_VERSION) { 1471 warnx("routing message version %d not understood", 1472 rtm->rtm_version); 1473 return; 1474 } 1475 if (rtm->rtm_msglen > msglen) { 1476 warnx("message length mismatch, in packet %d, returned %d", 1477 rtm->rtm_msglen, msglen); 1478 } 1479 if (rtm->rtm_errno) { 1480 errno = rtm->rtm_errno; 1481 warn("message indicates error %d", errno); 1482 return; 1483 } 1484 cp = ((char *)(rtm + 1)); 1485 if (rtm->rtm_addrs) 1486 for (i = 1; i; i <<= 1) 1487 if (i & rtm->rtm_addrs) { 1488 sa = (struct sockaddr *)cp; 1489 switch (i) { 1490 case RTA_DST: 1491 dst = sa; 1492 break; 1493 case RTA_GATEWAY: 1494 gate = sa; 1495 break; 1496 case RTA_NETMASK: 1497 mask = sa; 1498 break; 1499 case RTA_IFP: 1500 if (sa->sa_family == AF_LINK && 1501 ((struct sockaddr_dl *)sa)->sdl_nlen) 1502 ifp = (struct sockaddr_dl *)sa; 1503 break; 1504 } 1505 ADVANCE(cp, sa); 1506 } 1507 if (dst && mask) 1508 mask->sa_family = dst->sa_family; /* XXX */ 1509 if (dst) 1510 printf("destination: %s\n", routename(dst)); 1511 if (mask) { 1512 int savenflag = nflag; 1513 1514 nflag = 1; 1515 printf(" mask: %s\n", routename(mask)); 1516 nflag = savenflag; 1517 } 1518 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1519 printf(" gateway: %s\n", routename(gate)); 1520 if (ifp) 1521 printf(" interface: %.*s\n", 1522 ifp->sdl_nlen, ifp->sdl_data); 1523 printf(" flags: "); 1524 bprintf(stdout, rtm->rtm_flags, routeflags); 1525 1526 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1527 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1528 1529 printf("\n%s\n", "\ 1530 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1531 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1532 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1533 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1534 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1535 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1536 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1537 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1538 if (rtm->rtm_rmx.rmx_expire) 1539 rtm->rtm_rmx.rmx_expire -= time(0); 1540 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1541 #undef lock 1542 #undef msec 1543 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1544 if (verbose) 1545 pmsg_common(rtm); 1546 else if (rtm->rtm_addrs &~ RTA_IGN) { 1547 printf("sockaddrs: "); 1548 bprintf(stdout, rtm->rtm_addrs, addrnames); 1549 putchar('\n'); 1550 } 1551 #undef RTA_IGN 1552 } 1553 1554 void 1555 pmsg_common(struct rt_msghdr *rtm) 1556 { 1557 printf("\nlocks: "); 1558 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1559 printf(" inits: "); 1560 bprintf(stdout, rtm->rtm_inits, metricnames); 1561 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1562 } 1563 1564 void 1565 pmsg_addrs(char *cp, int addrs) 1566 { 1567 struct sockaddr *sa; 1568 int i; 1569 1570 if (addrs == 0) { 1571 putchar('\n'); 1572 return; 1573 } 1574 printf("\nsockaddrs: "); 1575 bprintf(stdout, addrs, addrnames); 1576 putchar('\n'); 1577 for (i = 1; i; i <<= 1) 1578 if (i & addrs) { 1579 sa = (struct sockaddr *)cp; 1580 printf(" %s", routename(sa)); 1581 ADVANCE(cp, sa); 1582 } 1583 putchar('\n'); 1584 fflush(stdout); 1585 } 1586 1587 void 1588 bprintf(FILE *fp, int b, u_char *s) 1589 { 1590 int i; 1591 int gotsome = 0; 1592 1593 if (b == 0) 1594 return; 1595 while ((i = *s++) != 0) { 1596 if (b & (1 << (i-1))) { 1597 if (gotsome == 0) 1598 i = '<'; 1599 else 1600 i = ','; 1601 putc(i, fp); 1602 gotsome = 1; 1603 for (; (i = *s) > 32; s++) 1604 putc(i, fp); 1605 } else 1606 while (*s > 32) 1607 s++; 1608 } 1609 if (gotsome) 1610 putc('>', fp); 1611 } 1612 1613 int 1614 keyword(char *cp) 1615 { 1616 struct keytab *kt = keywords; 1617 1618 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1619 kt++; 1620 return(kt->kt_i); 1621 } 1622 1623 void 1624 sodump(sup su, char *which) 1625 { 1626 switch (su->sa.sa_family) { 1627 case AF_LINK: 1628 printf("%s: link %s; ", 1629 which, link_ntoa(&su->sdl)); 1630 break; 1631 case AF_INET: 1632 printf("%s: inet %s; ", 1633 which, inet_ntoa(su->sin.sin_addr)); 1634 break; 1635 case AF_APPLETALK: 1636 printf("%s: atalk %s; ", 1637 which, atalk_ntoa(su->sat.sat_addr)); 1638 break; 1639 #ifdef NS 1640 case AF_NS: 1641 printf("%s: xns %s; ", 1642 which, ns_ntoa(su->sns.sns_addr)); 1643 break; 1644 #endif 1645 } 1646 fflush(stdout); 1647 } 1648 1649 /* States*/ 1650 #define VIRGIN 0 1651 #define GOTONE 1 1652 #define GOTTWO 2 1653 /* Inputs */ 1654 #define DIGIT (4*0) 1655 #define END (4*1) 1656 #define DELIM (4*2) 1657 1658 void 1659 sockaddr(char *addr, struct sockaddr *sa) 1660 { 1661 char *cp = (char *)sa; 1662 int size = sa->sa_len; 1663 char *cplim = cp + size; 1664 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1665 1666 memset(cp, 0, size); 1667 cp++; 1668 do { 1669 if ((*addr >= '0') && (*addr <= '9')) { 1670 new = *addr - '0'; 1671 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1672 new = *addr - 'a' + 10; 1673 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1674 new = *addr - 'A' + 10; 1675 } else if (*addr == 0) 1676 state |= END; 1677 else 1678 state |= DELIM; 1679 addr++; 1680 switch (state /* | INPUT */) { 1681 case GOTTWO | DIGIT: 1682 *cp++ = byte; /*FALLTHROUGH*/ 1683 case VIRGIN | DIGIT: 1684 state = GOTONE; byte = new; continue; 1685 case GOTONE | DIGIT: 1686 state = GOTTWO; byte = new + (byte << 4); continue; 1687 default: /* | DELIM */ 1688 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1689 case GOTONE | END: 1690 case GOTTWO | END: 1691 *cp++ = byte; /* FALLTHROUGH */ 1692 case VIRGIN | END: 1693 break; 1694 } 1695 break; 1696 } while (cp < cplim); 1697 sa->sa_len = cp - (char *)sa; 1698 } 1699 1700 int 1701 atalk_aton(const char *text, struct at_addr *addr) 1702 { 1703 u_int net, node; 1704 1705 if (sscanf(text, "%u.%u", &net, &node) != 2 1706 || net > 0xffff || node > 0xff) 1707 return(0); 1708 addr->s_net = htons(net); 1709 addr->s_node = node; 1710 return(1); 1711 } 1712 1713 char * 1714 atalk_ntoa(struct at_addr at) 1715 { 1716 static char buf[20]; 1717 1718 snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1719 return(buf); 1720 } 1721