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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 static const char copyright[] = 32 "@(#) Copyright (c) 1983, 1989, 1991, 1993\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34 #endif /* not lint */ 35 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)route.c 8.6 (Berkeley) 4/28/95"; 39 #endif 40 #endif /* not lint */ 41 42 #include <sys/cdefs.h> 43 __FBSDID("$FreeBSD$"); 44 45 #include <sys/param.h> 46 #include <sys/file.h> 47 #include <sys/socket.h> 48 #include <sys/ioctl.h> 49 #include <sys/sysctl.h> 50 #include <sys/types.h> 51 52 #include <net/if.h> 53 #include <net/route.h> 54 #include <net/if_dl.h> 55 #include <netinet/in.h> 56 #include <netinet/if_ether.h> 57 #include <netatalk/at.h> 58 #include <arpa/inet.h> 59 #include <netdb.h> 60 61 #include <ctype.h> 62 #include <err.h> 63 #include <errno.h> 64 #include <paths.h> 65 #include <stdio.h> 66 #include <stdlib.h> 67 #include <string.h> 68 #include <sysexits.h> 69 #include <unistd.h> 70 #include <ifaddrs.h> 71 72 struct keytab { 73 const char *kt_cp; 74 int kt_i; 75 } keywords[] = { 76 #include "keywords.h" 77 {0, 0} 78 }; 79 80 struct ortentry route; 81 union sockunion { 82 struct sockaddr sa; 83 struct sockaddr_in sin; 84 #ifdef INET6 85 struct sockaddr_in6 sin6; 86 #endif 87 struct sockaddr_at sat; 88 struct sockaddr_dl sdl; 89 struct sockaddr_inarp sinarp; 90 struct sockaddr_storage ss; /* added to avoid memory overrun */ 91 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 92 93 typedef union sockunion *sup; 94 int pid, rtm_addrs; 95 int s; 96 int forcehost, forcenet, doflush, nflag, af, qflag, tflag; 97 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 98 int locking, lockrest, debugonly; 99 struct rt_metrics rt_metrics; 100 u_long rtm_inits; 101 uid_t uid; 102 103 static int atalk_aton(const char *, struct at_addr *); 104 static char *atalk_ntoa(struct at_addr); 105 static void bprintf(FILE *, int, u_char *); 106 static void flushroutes(int argc, char *argv[]); 107 static int getaddr(int, char *, struct hostent **); 108 static int keyword(const char *); 109 static void inet_makenetandmask(u_long, struct sockaddr_in *, u_long); 110 #ifdef INET6 111 static int inet6_makenetandmask(struct sockaddr_in6 *, const char *); 112 #endif 113 static void interfaces(void); 114 static void mask_addr(void); 115 static void monitor(void); 116 static const char *netname(struct sockaddr *); 117 static void newroute(int, char **); 118 static void pmsg_addrs(char *, int, size_t); 119 static void pmsg_common(struct rt_msghdr *, size_t); 120 static int prefixlen(const char *); 121 static void print_getmsg(struct rt_msghdr *, int); 122 static void print_rtmsg(struct rt_msghdr *, size_t); 123 static const char *routename(struct sockaddr *); 124 static int rtmsg(int, int); 125 static void set_metric(char *, int); 126 static void sockaddr(char *, struct sockaddr *); 127 static void sodump(sup, const char *); 128 extern char *iso_ntoa(void); 129 130 static void usage(const char *) __dead2; 131 132 void 133 usage(const char *cp) 134 { 135 if (cp != NULL) 136 warnx("bad keyword: %s", cp); 137 (void) fprintf(stderr, 138 "usage: route [-dnqtv] command [[modifiers] args]\n"); 139 exit(EX_USAGE); 140 /* NOTREACHED */ 141 } 142 143 int 144 main(int argc, char **argv) 145 { 146 int ch; 147 148 if (argc < 2) 149 usage(NULL); 150 151 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 152 switch(ch) { 153 case 'n': 154 nflag = 1; 155 break; 156 case 'q': 157 qflag = 1; 158 break; 159 case 'v': 160 verbose = 1; 161 break; 162 case 't': 163 tflag = 1; 164 break; 165 case 'd': 166 debugonly = 1; 167 break; 168 case '?': 169 default: 170 usage(NULL); 171 } 172 argc -= optind; 173 argv += optind; 174 175 pid = getpid(); 176 uid = geteuid(); 177 if (tflag) 178 s = open(_PATH_DEVNULL, O_WRONLY, 0); 179 else 180 s = socket(PF_ROUTE, SOCK_RAW, 0); 181 if (s < 0) 182 err(EX_OSERR, "socket"); 183 if (*argv != NULL) 184 switch (keyword(*argv)) { 185 case K_GET: 186 case K_SHOW: 187 uid = 0; 188 /* FALLTHROUGH */ 189 190 case K_CHANGE: 191 case K_ADD: 192 case K_DEL: 193 case K_DELETE: 194 newroute(argc, argv); 195 /* NOTREACHED */ 196 197 case K_MONITOR: 198 monitor(); 199 /* NOTREACHED */ 200 201 case K_FLUSH: 202 flushroutes(argc, argv); 203 exit(0); 204 /* NOTREACHED */ 205 } 206 usage(*argv); 207 /* NOTREACHED */ 208 } 209 210 /* 211 * Purge all entries in the routing tables not 212 * associated with network interfaces. 213 */ 214 static void 215 flushroutes(int argc, char *argv[]) 216 { 217 size_t needed; 218 int mib[6], rlen, seqno, count = 0; 219 char *buf, *next, *lim; 220 struct rt_msghdr *rtm; 221 222 if (uid != 0 && !debugonly) { 223 errx(EX_NOPERM, "must be root to alter routing table"); 224 } 225 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 226 if (argc > 1) { 227 argv++; 228 if (argc == 2 && **argv == '-') 229 switch (keyword(*argv + 1)) { 230 case K_INET: 231 af = AF_INET; 232 break; 233 #ifdef INET6 234 case K_INET6: 235 af = AF_INET6; 236 break; 237 #endif 238 case K_ATALK: 239 af = AF_APPLETALK; 240 break; 241 case K_LINK: 242 af = AF_LINK; 243 break; 244 default: 245 goto bad; 246 } else 247 bad: usage(*argv); 248 } 249 retry: 250 mib[0] = CTL_NET; 251 mib[1] = PF_ROUTE; 252 mib[2] = 0; /* protocol */ 253 mib[3] = 0; /* wildcard address family */ 254 mib[4] = NET_RT_DUMP; 255 mib[5] = 0; /* no flags */ 256 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 257 err(EX_OSERR, "route-sysctl-estimate"); 258 if ((buf = malloc(needed)) == NULL) 259 errx(EX_OSERR, "malloc failed"); 260 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 261 if (errno == ENOMEM && count++ < 10) { 262 warnx("Routing table grew, retrying"); 263 sleep(1); 264 free(buf); 265 goto retry; 266 } 267 err(EX_OSERR, "route-sysctl-get"); 268 } 269 lim = buf + needed; 270 if (verbose) 271 (void) printf("Examining routing table from sysctl\n"); 272 seqno = 0; /* ??? */ 273 for (next = buf; next < lim; next += rtm->rtm_msglen) { 274 rtm = (struct rt_msghdr *)next; 275 if (verbose) 276 print_rtmsg(rtm, rtm->rtm_msglen); 277 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 278 continue; 279 if (af != 0) { 280 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 281 282 if (sa->sa_family != af) 283 continue; 284 } 285 if (debugonly) 286 continue; 287 rtm->rtm_type = RTM_DELETE; 288 rtm->rtm_seq = seqno; 289 rlen = write(s, next, rtm->rtm_msglen); 290 if (rlen < 0 && errno == EPERM) 291 err(1, "write to routing socket"); 292 if (rlen < (int)rtm->rtm_msglen) { 293 warn("write to routing socket"); 294 (void) printf("got only %d for rlen\n", rlen); 295 free(buf); 296 goto retry; 297 break; 298 } 299 seqno++; 300 if (qflag) 301 continue; 302 if (verbose) 303 print_rtmsg(rtm, rlen); 304 else { 305 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 306 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 307 routename(sa) : netname(sa)); 308 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa); 309 (void) printf("%-20.20s ", routename(sa)); 310 (void) printf("done\n"); 311 } 312 } 313 } 314 315 const char * 316 routename(struct sockaddr *sa) 317 { 318 const char *cp; 319 static char line[MAXHOSTNAMELEN + 1]; 320 struct hostent *hp; 321 static char domain[MAXHOSTNAMELEN + 1]; 322 static int first = 1, n; 323 324 if (first) { 325 first = 0; 326 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 327 (cp = strchr(domain, '.'))) { 328 domain[MAXHOSTNAMELEN] = '\0'; 329 (void) strcpy(domain, cp + 1); 330 } else 331 domain[0] = 0; 332 } 333 334 if (sa->sa_len == 0) 335 strcpy(line, "default"); 336 else switch (sa->sa_family) { 337 338 case AF_INET: 339 { struct in_addr in; 340 in = ((struct sockaddr_in *)sa)->sin_addr; 341 342 cp = NULL; 343 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 344 cp = "default"; 345 if (cp == NULL && !nflag) { 346 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 347 AF_INET); 348 if (hp != NULL) { 349 char *cptr; 350 cptr = strchr(hp->h_name, '.'); 351 if (cptr != NULL && 352 strcmp(cptr + 1, domain) == 0) 353 *cptr = '\0'; 354 cp = hp->h_name; 355 } 356 } 357 if (cp != NULL) { 358 strncpy(line, cp, sizeof(line) - 1); 359 line[sizeof(line) - 1] = '\0'; 360 } else 361 (void) sprintf(line, "%s", inet_ntoa(in)); 362 break; 363 } 364 365 #ifdef INET6 366 case AF_INET6: 367 { 368 struct sockaddr_in6 sin6; /* use static var for safety */ 369 int niflags = 0; 370 371 memset(&sin6, 0, sizeof(sin6)); 372 memcpy(&sin6, sa, sa->sa_len); 373 sin6.sin6_len = sizeof(struct sockaddr_in6); 374 sin6.sin6_family = AF_INET6; 375 #ifdef __KAME__ 376 if (sa->sa_len == sizeof(struct sockaddr_in6) && 377 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 378 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 379 sin6.sin6_scope_id == 0) { 380 sin6.sin6_scope_id = 381 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 382 sin6.sin6_addr.s6_addr[2] = 0; 383 sin6.sin6_addr.s6_addr[3] = 0; 384 } 385 #endif 386 if (nflag) 387 niflags |= NI_NUMERICHOST; 388 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 389 line, sizeof(line), NULL, 0, niflags) != 0) 390 strncpy(line, "invalid", sizeof(line)); 391 392 return(line); 393 } 394 #endif 395 396 case AF_APPLETALK: 397 (void) snprintf(line, sizeof(line), "atalk %s", 398 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 399 break; 400 401 case AF_LINK: 402 return (link_ntoa((struct sockaddr_dl *)sa)); 403 404 default: 405 { 406 u_short *sp = (u_short *)sa; 407 u_short *splim = sp + ((sa->sa_len + 1) >> 1); 408 char *cps = line + sprintf(line, "(%d)", sa->sa_family); 409 char *cpe = line + sizeof(line); 410 411 while (++sp < splim && cps < cpe) /* start with sa->sa_data */ 412 if ((n = snprintf(cps, cpe - cps, " %x", *sp)) > 0) 413 cps += n; 414 else 415 *cps = '\0'; 416 break; 417 } 418 } 419 return (line); 420 } 421 422 /* 423 * Return the name of the network whose address is given. 424 * The address is assumed to be that of a net or subnet, not a host. 425 */ 426 const char * 427 netname(struct sockaddr *sa) 428 { 429 const char *cp = NULL; 430 static char line[MAXHOSTNAMELEN + 1]; 431 struct netent *np = NULL; 432 u_long net, mask; 433 u_long i; 434 int n, subnetshift; 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 != NULL) 469 cp = np->n_name; 470 } 471 #define C(x) (unsigned)((x) & 0xff) 472 if (cp != NULL) 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; 495 496 memset(&sin6, 0, sizeof(sin6)); 497 memcpy(&sin6, sa, sa->sa_len); 498 sin6.sin6_len = sizeof(struct sockaddr_in6); 499 sin6.sin6_family = AF_INET6; 500 #ifdef __KAME__ 501 if (sa->sa_len == sizeof(struct sockaddr_in6) && 502 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 503 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 504 sin6.sin6_scope_id == 0) { 505 sin6.sin6_scope_id = 506 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 507 sin6.sin6_addr.s6_addr[2] = 0; 508 sin6.sin6_addr.s6_addr[3] = 0; 509 } 510 #endif 511 if (nflag) 512 niflags |= NI_NUMERICHOST; 513 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 514 line, sizeof(line), NULL, 0, niflags) != 0) 515 strncpy(line, "invalid", sizeof(line)); 516 517 return(line); 518 } 519 #endif 520 521 case AF_APPLETALK: 522 (void) snprintf(line, sizeof(line), "atalk %s", 523 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 524 break; 525 526 case AF_LINK: 527 return (link_ntoa((struct sockaddr_dl *)sa)); 528 529 530 default: 531 { 532 u_short *sp = (u_short *)sa->sa_data; 533 u_short *splim = sp + ((sa->sa_len + 1)>>1); 534 char *cps = line + sprintf(line, "af %d:", sa->sa_family); 535 char *cpe = line + sizeof(line); 536 537 while (sp < splim && cps < cpe) 538 if ((n = snprintf(cps, cpe - cps, " %x", *sp++)) > 0) 539 cps += n; 540 else 541 *cps = '\0'; 542 break; 543 } 544 } 545 return (line); 546 } 547 548 static void 549 set_metric(char *value, int key) 550 { 551 int flag = 0; 552 u_long noval, *valp = &noval; 553 554 switch (key) { 555 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 556 caseof(K_MTU, RTV_MTU, rmx_mtu); 557 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 558 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 559 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 560 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 561 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 562 caseof(K_RTT, RTV_RTT, rmx_rtt); 563 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 564 caseof(K_WEIGHT, RTV_WEIGHT, rmx_weight); 565 } 566 rtm_inits |= flag; 567 if (lockrest || locking) 568 rt_metrics.rmx_locks |= flag; 569 if (locking) 570 locking = 0; 571 *valp = atoi(value); 572 } 573 574 static void 575 newroute(int argc, char **argv) 576 { 577 char *cmd; 578 const char *dest = "", *gateway = "", *errmsg; 579 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC; 580 int key; 581 struct hostent *hp = 0; 582 583 if (uid != 0) { 584 errx(EX_NOPERM, "must be root to alter routing table"); 585 } 586 cmd = argv[0]; 587 if (*cmd != 'g' && *cmd != 's') 588 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 589 590 while (--argc > 0) { 591 if (**(++argv)== '-') { 592 switch (key = keyword(1 + *argv)) { 593 case K_LINK: 594 af = AF_LINK; 595 aflen = sizeof(struct sockaddr_dl); 596 break; 597 case K_INET: 598 af = AF_INET; 599 aflen = sizeof(struct sockaddr_in); 600 break; 601 #ifdef INET6 602 case K_INET6: 603 af = AF_INET6; 604 aflen = sizeof(struct sockaddr_in6); 605 break; 606 #endif 607 case K_ATALK: 608 af = AF_APPLETALK; 609 aflen = sizeof(struct sockaddr_at); 610 break; 611 case K_SA: 612 af = PF_ROUTE; 613 aflen = sizeof(union sockunion); 614 break; 615 case K_IFACE: 616 case K_INTERFACE: 617 iflag++; 618 break; 619 case K_NOSTATIC: 620 flags &= ~RTF_STATIC; 621 break; 622 case K_LOCK: 623 locking = 1; 624 break; 625 case K_LOCKREST: 626 lockrest = 1; 627 break; 628 case K_HOST: 629 forcehost++; 630 break; 631 case K_REJECT: 632 flags |= RTF_REJECT; 633 break; 634 case K_BLACKHOLE: 635 flags |= RTF_BLACKHOLE; 636 break; 637 case K_PROTO1: 638 flags |= RTF_PROTO1; 639 break; 640 case K_PROTO2: 641 flags |= RTF_PROTO2; 642 break; 643 case K_PROXY: 644 proxy = 1; 645 break; 646 case K_XRESOLVE: 647 flags |= RTF_XRESOLVE; 648 break; 649 case K_STATIC: 650 flags |= RTF_STATIC; 651 break; 652 case K_STICKY: 653 flags |= RTF_STICKY; 654 break; 655 case K_NOSTICK: 656 flags &= ~RTF_STICKY; 657 break; 658 case K_IFA: 659 if (!--argc) 660 usage(NULL); 661 (void) getaddr(RTA_IFA, *++argv, 0); 662 break; 663 case K_IFP: 664 if (!--argc) 665 usage(NULL); 666 (void) getaddr(RTA_IFP, *++argv, 0); 667 break; 668 case K_GENMASK: 669 if (!--argc) 670 usage(NULL); 671 (void) getaddr(RTA_GENMASK, *++argv, 0); 672 break; 673 case K_GATEWAY: 674 if (!--argc) 675 usage(NULL); 676 (void) getaddr(RTA_GATEWAY, *++argv, 0); 677 break; 678 case K_DST: 679 if (!--argc) 680 usage(NULL); 681 ishost = getaddr(RTA_DST, *++argv, &hp); 682 dest = *argv; 683 break; 684 case K_NETMASK: 685 if (!--argc) 686 usage(NULL); 687 (void) getaddr(RTA_NETMASK, *++argv, 0); 688 /* FALLTHROUGH */ 689 case K_NET: 690 forcenet++; 691 break; 692 case K_PREFIXLEN: 693 if (!--argc) 694 usage(NULL); 695 if (prefixlen(*++argv) == -1) { 696 forcenet = 0; 697 ishost = 1; 698 } else { 699 forcenet = 1; 700 ishost = 0; 701 } 702 break; 703 case K_MTU: 704 case K_HOPCOUNT: 705 case K_EXPIRE: 706 case K_RECVPIPE: 707 case K_SENDPIPE: 708 case K_SSTHRESH: 709 case K_RTT: 710 case K_RTTVAR: 711 case K_WEIGHT: 712 if (!--argc) 713 usage(NULL); 714 set_metric(*++argv, key); 715 break; 716 default: 717 usage(1+*argv); 718 } 719 } else { 720 if ((rtm_addrs & RTA_DST) == 0) { 721 dest = *argv; 722 ishost = getaddr(RTA_DST, *argv, &hp); 723 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 724 gateway = *argv; 725 (void) getaddr(RTA_GATEWAY, *argv, &hp); 726 } else { 727 (void) getaddr(RTA_NETMASK, *argv, 0); 728 forcenet = 1; 729 } 730 } 731 } 732 if (forcehost) { 733 ishost = 1; 734 #ifdef INET6 735 if (af == AF_INET6) { 736 rtm_addrs &= ~RTA_NETMASK; 737 memset((void *)&so_mask, 0, sizeof(so_mask)); 738 } 739 #endif 740 } 741 if (forcenet) 742 ishost = 0; 743 flags |= RTF_UP; 744 if (ishost) 745 flags |= RTF_HOST; 746 if (iflag == 0) 747 flags |= RTF_GATEWAY; 748 if (proxy) { 749 so_dst.sinarp.sin_other = SIN_PROXY; 750 flags |= RTF_ANNOUNCE; 751 } 752 for (attempts = 1; ; attempts++) { 753 errno = 0; 754 if ((ret = rtmsg(*cmd, flags)) == 0) 755 break; 756 if (errno != ENETUNREACH && errno != ESRCH) 757 break; 758 if (af == AF_INET && *gateway != '\0' && 759 hp != NULL && hp->h_addr_list[1] != NULL) { 760 hp->h_addr_list++; 761 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 762 MIN((size_t)hp->h_length, 763 sizeof(so_gate.sin.sin_addr))); 764 } else 765 break; 766 } 767 if (*cmd == 'g' || *cmd == 's') 768 exit(ret != 0); 769 if (!qflag) { 770 oerrno = errno; 771 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 772 if (*gateway) { 773 (void) printf(": gateway %s", gateway); 774 if (attempts > 1 && ret == 0 && af == AF_INET) 775 (void) printf(" (%s)", 776 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 777 } 778 if (ret == 0) { 779 (void) printf("\n"); 780 } else { 781 switch (oerrno) { 782 case ESRCH: 783 errmsg = "not in table"; 784 break; 785 case EBUSY: 786 errmsg = "entry in use"; 787 break; 788 case ENOBUFS: 789 errmsg = "not enough memory"; 790 break; 791 case EADDRINUSE: 792 /* handle recursion avoidance in rt_setgate() */ 793 errmsg = "gateway uses the same route"; 794 break; 795 case EEXIST: 796 errmsg = "route already in table"; 797 break; 798 default: 799 errmsg = strerror(oerrno); 800 break; 801 } 802 (void) printf(": %s\n", errmsg); 803 } 804 } 805 exit(ret != 0); 806 } 807 808 static void 809 inet_makenetandmask(u_long net, struct sockaddr_in *sin, u_long bits) 810 { 811 u_long addr, mask = 0; 812 char *cp; 813 814 rtm_addrs |= RTA_NETMASK; 815 /* 816 * XXX: This approach unable to handle 0.0.0.1/32 correctly 817 * as inet_network() converts 0.0.0.1 and 1 equally. 818 */ 819 if (net <= 0xff) 820 addr = net << IN_CLASSA_NSHIFT; 821 else if (net <= 0xffff) 822 addr = net << IN_CLASSB_NSHIFT; 823 else if (net <= 0xffffff) 824 addr = net << IN_CLASSC_NSHIFT; 825 else 826 addr = net; 827 /* 828 * If no /xx was specified we must calculate the 829 * CIDR address. 830 */ 831 if ((bits == 0) && (addr != 0)) { 832 u_long i, j; 833 for(i=0,j=0xff; i<4; i++) { 834 if (addr & j) { 835 break; 836 } 837 j <<= 8; 838 } 839 /* i holds the first non zero bit */ 840 bits = 32 - (i*8); 841 } 842 if (bits != 0) 843 mask = 0xffffffff << (32 - bits); 844 845 sin->sin_addr.s_addr = htonl(addr); 846 sin = &so_mask.sin; 847 sin->sin_addr.s_addr = htonl(mask); 848 sin->sin_len = 0; 849 sin->sin_family = 0; 850 cp = (char *)(&sin->sin_addr + 1); 851 while (*--cp == 0 && cp > (char *)sin) 852 ; 853 sin->sin_len = 1 + cp - (char *)sin; 854 } 855 856 #ifdef INET6 857 /* 858 * XXX the function may need more improvement... 859 */ 860 static int 861 inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen) 862 { 863 struct in6_addr in6; 864 865 if (plen == NULL) { 866 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 867 sin6->sin6_scope_id == 0) { 868 plen = "0"; 869 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 870 /* aggregatable global unicast - RFC2374 */ 871 memset(&in6, 0, sizeof(in6)); 872 if (!memcmp(&sin6->sin6_addr.s6_addr[8], 873 &in6.s6_addr[8], 8)) 874 plen = "64"; 875 } 876 } 877 878 if (plen == NULL || strcmp(plen, "128") == 0) 879 return (1); 880 rtm_addrs |= RTA_NETMASK; 881 prefixlen(plen); 882 return (0); 883 } 884 #endif 885 886 /* 887 * Interpret an argument as a network address of some kind, 888 * returning 1 if a host address, 0 if a network address. 889 */ 890 static int 891 getaddr(int which, char *str, struct hostent **hpp) 892 { 893 sup su; 894 struct hostent *hp; 895 struct netent *np; 896 u_long val; 897 char *q; 898 int afamily; /* local copy of af so we can change it */ 899 900 if (af == 0) { 901 af = AF_INET; 902 aflen = sizeof(struct sockaddr_in); 903 } 904 afamily = af; 905 rtm_addrs |= which; 906 switch (which) { 907 case RTA_DST: 908 su = &so_dst; 909 break; 910 case RTA_GATEWAY: 911 su = &so_gate; 912 if (iflag) { 913 struct ifaddrs *ifap, *ifa; 914 struct sockaddr_dl *sdl = NULL; 915 916 if (getifaddrs(&ifap)) 917 err(1, "getifaddrs"); 918 919 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) { 920 if (ifa->ifa_addr->sa_family != AF_LINK) 921 continue; 922 923 if (strcmp(str, ifa->ifa_name) != 0) 924 continue; 925 926 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 927 } 928 /* If we found it, then use it */ 929 if (sdl != NULL) { 930 /* 931 * Copy is safe since we have a 932 * sockaddr_storage member in sockunion{}. 933 * Note that we need to copy before calling 934 * freeifaddrs(). 935 */ 936 memcpy(&su->sdl, sdl, sdl->sdl_len); 937 } 938 freeifaddrs(ifap); 939 if (sdl != NULL) 940 return(1); 941 } 942 break; 943 case RTA_NETMASK: 944 su = &so_mask; 945 break; 946 case RTA_GENMASK: 947 su = &so_genmask; 948 break; 949 case RTA_IFP: 950 su = &so_ifp; 951 afamily = AF_LINK; 952 break; 953 case RTA_IFA: 954 su = &so_ifa; 955 break; 956 default: 957 usage("internal error"); 958 /*NOTREACHED*/ 959 } 960 su->sa.sa_len = aflen; 961 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 962 if (strcmp(str, "default") == 0) { 963 /* 964 * Default is net 0.0.0.0/0 965 */ 966 switch (which) { 967 case RTA_DST: 968 forcenet++; 969 #if 0 970 bzero(su, sizeof(*su)); /* for readability */ 971 #endif 972 getaddr(RTA_NETMASK, str, 0); 973 break; 974 #if 0 975 case RTA_NETMASK: 976 case RTA_GENMASK: 977 bzero(su, sizeof(*su)); /* for readability */ 978 #endif 979 } 980 return (0); 981 } 982 switch (afamily) { 983 #ifdef INET6 984 case AF_INET6: 985 { 986 struct addrinfo hints, *res; 987 int ecode; 988 989 q = NULL; 990 if (which == RTA_DST && (q = strchr(str, '/')) != NULL) 991 *q = '\0'; 992 memset(&hints, 0, sizeof(hints)); 993 hints.ai_family = afamily; /*AF_INET6*/ 994 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 995 ecode = getaddrinfo(str, NULL, &hints, &res); 996 if (ecode != 0 || res->ai_family != AF_INET6 || 997 res->ai_addrlen != sizeof(su->sin6)) { 998 (void) fprintf(stderr, "%s: %s\n", str, 999 gai_strerror(ecode)); 1000 exit(1); 1001 } 1002 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1003 #ifdef __KAME__ 1004 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1005 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1006 su->sin6.sin6_scope_id) { 1007 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1008 htons(su->sin6.sin6_scope_id); 1009 su->sin6.sin6_scope_id = 0; 1010 } 1011 #endif 1012 freeaddrinfo(res); 1013 if (q != NULL) 1014 *q++ = '/'; 1015 if (which == RTA_DST) 1016 return (inet6_makenetandmask(&su->sin6, q)); 1017 return (0); 1018 } 1019 #endif /* INET6 */ 1020 1021 case AF_APPLETALK: 1022 if (!atalk_aton(str, &su->sat.sat_addr)) 1023 errx(EX_NOHOST, "bad address: %s", str); 1024 rtm_addrs |= RTA_NETMASK; 1025 return(forcehost || su->sat.sat_addr.s_node != 0); 1026 1027 case AF_LINK: 1028 link_addr(str, &su->sdl); 1029 return (1); 1030 1031 1032 case PF_ROUTE: 1033 su->sa.sa_len = sizeof(*su); 1034 sockaddr(str, &su->sa); 1035 return (1); 1036 1037 case AF_INET: 1038 default: 1039 break; 1040 } 1041 1042 if (hpp == NULL) 1043 hpp = &hp; 1044 *hpp = NULL; 1045 1046 q = strchr(str,'/'); 1047 if (q != NULL && which == RTA_DST) { 1048 *q = '\0'; 1049 if ((val = inet_network(str)) != INADDR_NONE) { 1050 inet_makenetandmask( 1051 val, &su->sin, strtoul(q+1, 0, 0)); 1052 return (0); 1053 } 1054 *q = '/'; 1055 } 1056 if ((which != RTA_DST || forcenet == 0) && 1057 inet_aton(str, &su->sin.sin_addr)) { 1058 val = su->sin.sin_addr.s_addr; 1059 if (which != RTA_DST || forcehost || 1060 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1061 return (1); 1062 else { 1063 val = ntohl(val); 1064 goto netdone; 1065 } 1066 } 1067 if (which == RTA_DST && forcehost == 0 && 1068 ((val = inet_network(str)) != INADDR_NONE || 1069 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) { 1070 netdone: 1071 inet_makenetandmask(val, &su->sin, 0); 1072 return (0); 1073 } 1074 hp = gethostbyname(str); 1075 if (hp != NULL) { 1076 *hpp = hp; 1077 su->sin.sin_family = hp->h_addrtype; 1078 memmove((char *)&su->sin.sin_addr, hp->h_addr, 1079 MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr))); 1080 return (1); 1081 } 1082 errx(EX_NOHOST, "bad address: %s", str); 1083 } 1084 1085 static int 1086 prefixlen(const char *str) 1087 { 1088 int len = atoi(str), q, r; 1089 int max; 1090 char *p; 1091 1092 rtm_addrs |= RTA_NETMASK; 1093 switch (af) { 1094 #ifdef INET6 1095 case AF_INET6: 1096 max = 128; 1097 p = (char *)&so_mask.sin6.sin6_addr; 1098 break; 1099 #endif 1100 case AF_INET: 1101 max = 32; 1102 p = (char *)&so_mask.sin.sin_addr; 1103 break; 1104 default: 1105 fprintf(stderr, "prefixlen not supported in this af\n"); 1106 exit(1); 1107 } 1108 1109 if (len < 0 || max < len) { 1110 fprintf(stderr, "%s: bad value\n", str); 1111 exit(1); 1112 } 1113 1114 q = len >> 3; 1115 r = len & 7; 1116 so_mask.sa.sa_family = af; 1117 so_mask.sa.sa_len = aflen; 1118 memset((void *)p, 0, max / 8); 1119 if (q > 0) 1120 memset((void *)p, 0xff, q); 1121 if (r > 0) 1122 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1123 if (len == max) 1124 return (-1); 1125 else 1126 return (len); 1127 } 1128 1129 static void 1130 interfaces(void) 1131 { 1132 size_t needed; 1133 int mib[6]; 1134 char *buf, *lim, *next, count = 0; 1135 struct rt_msghdr *rtm; 1136 1137 retry2: 1138 mib[0] = CTL_NET; 1139 mib[1] = PF_ROUTE; 1140 mib[2] = 0; /* protocol */ 1141 mib[3] = 0; /* wildcard address family */ 1142 mib[4] = NET_RT_IFLIST; 1143 mib[5] = 0; /* no flags */ 1144 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1145 err(EX_OSERR, "route-sysctl-estimate"); 1146 if ((buf = malloc(needed)) == NULL) 1147 errx(EX_OSERR, "malloc failed"); 1148 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 1149 if (errno == ENOMEM && count++ < 10) { 1150 warnx("Routing table grew, retrying"); 1151 sleep(1); 1152 free(buf); 1153 goto retry2; 1154 } 1155 err(EX_OSERR, "actual retrieval of interface table"); 1156 } 1157 lim = buf + needed; 1158 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1159 rtm = (struct rt_msghdr *)next; 1160 print_rtmsg(rtm, rtm->rtm_msglen); 1161 } 1162 } 1163 1164 static void 1165 monitor(void) 1166 { 1167 int n; 1168 char msg[2048]; 1169 1170 verbose = 1; 1171 if (debugonly) { 1172 interfaces(); 1173 exit(0); 1174 } 1175 for (;;) { 1176 time_t now; 1177 n = read(s, msg, 2048); 1178 now = time(NULL); 1179 (void) printf("\ngot message of size %d on %s", n, ctime(&now)); 1180 print_rtmsg((struct rt_msghdr *)msg, n); 1181 } 1182 } 1183 1184 struct { 1185 struct rt_msghdr m_rtm; 1186 char m_space[512]; 1187 } m_rtmsg; 1188 1189 static int 1190 rtmsg(int cmd, int flags) 1191 { 1192 static int seq; 1193 int rlen; 1194 char *cp = m_rtmsg.m_space; 1195 int l; 1196 1197 #define NEXTADDR(w, u) \ 1198 if (rtm_addrs & (w)) {\ 1199 l = SA_SIZE(&(u.sa)); memmove(cp, &(u), l); cp += l;\ 1200 if (verbose) sodump(&(u),#u);\ 1201 } 1202 1203 errno = 0; 1204 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1205 if (cmd == 'a') 1206 cmd = RTM_ADD; 1207 else if (cmd == 'c') 1208 cmd = RTM_CHANGE; 1209 else if (cmd == 'g' || cmd == 's') { 1210 cmd = RTM_GET; 1211 if (so_ifp.sa.sa_family == 0) { 1212 so_ifp.sa.sa_family = AF_LINK; 1213 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1214 rtm_addrs |= RTA_IFP; 1215 } 1216 } else 1217 cmd = RTM_DELETE; 1218 #define rtm m_rtmsg.m_rtm 1219 rtm.rtm_type = cmd; 1220 rtm.rtm_flags = flags; 1221 rtm.rtm_version = RTM_VERSION; 1222 rtm.rtm_seq = ++seq; 1223 rtm.rtm_addrs = rtm_addrs; 1224 rtm.rtm_rmx = rt_metrics; 1225 rtm.rtm_inits = rtm_inits; 1226 1227 if (rtm_addrs & RTA_NETMASK) 1228 mask_addr(); 1229 NEXTADDR(RTA_DST, so_dst); 1230 NEXTADDR(RTA_GATEWAY, so_gate); 1231 NEXTADDR(RTA_NETMASK, so_mask); 1232 NEXTADDR(RTA_GENMASK, so_genmask); 1233 NEXTADDR(RTA_IFP, so_ifp); 1234 NEXTADDR(RTA_IFA, so_ifa); 1235 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1236 if (verbose) 1237 print_rtmsg(&rtm, l); 1238 if (debugonly) 1239 return (0); 1240 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1241 if (errno == EPERM) 1242 err(1, "writing to routing socket"); 1243 warn("writing to routing socket"); 1244 return (-1); 1245 } 1246 if (cmd == RTM_GET) { 1247 do { 1248 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1249 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1250 if (l < 0) 1251 warn("read from routing socket"); 1252 else 1253 print_getmsg(&rtm, l); 1254 } 1255 #undef rtm 1256 return (0); 1257 } 1258 1259 static void 1260 mask_addr(void) 1261 { 1262 int olen = so_mask.sa.sa_len; 1263 char *cp1 = olen + (char *)&so_mask, *cp2; 1264 1265 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1266 if (*--cp1 != 0) { 1267 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1268 break; 1269 } 1270 if ((rtm_addrs & RTA_DST) == 0) 1271 return; 1272 switch (so_dst.sa.sa_family) { 1273 case AF_INET: 1274 #ifdef INET6 1275 case AF_INET6: 1276 #endif 1277 case AF_APPLETALK: 1278 case 0: 1279 return; 1280 } 1281 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1282 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1283 while (cp2 > cp1) 1284 *--cp2 = 0; 1285 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1286 while (cp1 > so_dst.sa.sa_data) 1287 *--cp1 &= *--cp2; 1288 } 1289 1290 const char *msgtypes[] = { 1291 "", 1292 "RTM_ADD: Add Route", 1293 "RTM_DELETE: Delete Route", 1294 "RTM_CHANGE: Change Metrics or flags", 1295 "RTM_GET: Report Metrics", 1296 "RTM_LOSING: Kernel Suspects Partitioning", 1297 "RTM_REDIRECT: Told to use different route", 1298 "RTM_MISS: Lookup failed on this address", 1299 "RTM_LOCK: fix specified metrics", 1300 "RTM_OLDADD: caused by SIOCADDRT", 1301 "RTM_OLDDEL: caused by SIOCDELRT", 1302 "RTM_RESOLVE: Route created by cloning", 1303 "RTM_NEWADDR: address being added to iface", 1304 "RTM_DELADDR: address being removed from iface", 1305 "RTM_IFINFO: iface status change", 1306 "RTM_NEWMADDR: new multicast group membership on iface", 1307 "RTM_DELMADDR: multicast group membership removed from iface", 1308 "RTM_IFANNOUNCE: interface arrival/departure", 1309 "RTM_IEEE80211: IEEE 802.11 wireless event", 1310 }; 1311 1312 char metricnames[] = 1313 "\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire" 1314 "\1mtu"; 1315 char routeflags[] = 1316 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE" 1317 "\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE" 1318 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3" 1319 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY"; 1320 char ifnetflags[] = 1321 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1322 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1323 "\017LINK2\020MULTICAST"; 1324 char addrnames[] = 1325 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1326 1327 static const char errfmt[] = 1328 "\n%s: truncated route message, only %zu bytes left\n"; 1329 1330 static void 1331 print_rtmsg(struct rt_msghdr *rtm, size_t msglen) 1332 { 1333 struct if_msghdr *ifm; 1334 struct ifa_msghdr *ifam; 1335 #ifdef RTM_NEWMADDR 1336 struct ifma_msghdr *ifmam; 1337 #endif 1338 struct if_announcemsghdr *ifan; 1339 const char *state; 1340 1341 if (verbose == 0) 1342 return; 1343 if (rtm->rtm_version != RTM_VERSION) { 1344 (void) printf("routing message version %d not understood\n", 1345 rtm->rtm_version); 1346 return; 1347 } 1348 if (rtm->rtm_type < sizeof(msgtypes) / sizeof(msgtypes[0])) 1349 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1350 else 1351 (void)printf("unknown type %d: ", rtm->rtm_type); 1352 (void)printf("len %d, ", rtm->rtm_msglen); 1353 1354 #define REQUIRE(x) do { \ 1355 if (msglen < sizeof(x)) \ 1356 goto badlen; \ 1357 else \ 1358 msglen -= sizeof(x); \ 1359 } while (0) 1360 1361 switch (rtm->rtm_type) { 1362 case RTM_IFINFO: 1363 REQUIRE(struct if_msghdr); 1364 ifm = (struct if_msghdr *)rtm; 1365 (void) printf("if# %d, ", ifm->ifm_index); 1366 switch (ifm->ifm_data.ifi_link_state) { 1367 case LINK_STATE_DOWN: 1368 state = "down"; 1369 break; 1370 case LINK_STATE_UP: 1371 state = "up"; 1372 break; 1373 default: 1374 state = "unknown"; 1375 break; 1376 } 1377 (void) printf("link: %s, flags:", state); 1378 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1379 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs, msglen); 1380 break; 1381 case RTM_NEWADDR: 1382 case RTM_DELADDR: 1383 REQUIRE(struct ifa_msghdr); 1384 ifam = (struct ifa_msghdr *)rtm; 1385 (void) printf("metric %d, flags:", ifam->ifam_metric); 1386 bprintf(stdout, ifam->ifam_flags, routeflags); 1387 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs, msglen); 1388 break; 1389 #ifdef RTM_NEWMADDR 1390 case RTM_NEWMADDR: 1391 case RTM_DELMADDR: 1392 REQUIRE(struct ifma_msghdr); 1393 ifmam = (struct ifma_msghdr *)rtm; 1394 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs, msglen); 1395 break; 1396 #endif 1397 case RTM_IFANNOUNCE: 1398 REQUIRE(struct if_announcemsghdr); 1399 ifan = (struct if_announcemsghdr *)rtm; 1400 (void) printf("if# %d, what: ", ifan->ifan_index); 1401 switch (ifan->ifan_what) { 1402 case IFAN_ARRIVAL: 1403 printf("arrival"); 1404 break; 1405 case IFAN_DEPARTURE: 1406 printf("departure"); 1407 break; 1408 default: 1409 printf("#%d", ifan->ifan_what); 1410 break; 1411 } 1412 printf("\n"); 1413 break; 1414 1415 default: 1416 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1417 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1418 bprintf(stdout, rtm->rtm_flags, routeflags); 1419 pmsg_common(rtm, msglen); 1420 } 1421 1422 return; 1423 1424 badlen: 1425 (void)printf(errfmt, __func__, msglen); 1426 #undef REQUIRE 1427 } 1428 1429 static void 1430 print_getmsg(struct rt_msghdr *rtm, int msglen) 1431 { 1432 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1433 struct sockaddr_dl *ifp = NULL; 1434 struct sockaddr *sa; 1435 char *cp; 1436 int i; 1437 1438 (void) printf(" route to: %s\n", 1439 routename((struct sockaddr *)&so_dst)); 1440 if (rtm->rtm_version != RTM_VERSION) { 1441 warnx("routing message version %d not understood", 1442 rtm->rtm_version); 1443 return; 1444 } 1445 if (rtm->rtm_msglen > msglen) { 1446 warnx("message length mismatch, in packet %d, returned %d", 1447 rtm->rtm_msglen, msglen); 1448 } 1449 if (rtm->rtm_errno) { 1450 errno = rtm->rtm_errno; 1451 warn("message indicates error %d", errno); 1452 return; 1453 } 1454 cp = ((char *)(rtm + 1)); 1455 if (rtm->rtm_addrs) 1456 for (i = 1; i; i <<= 1) 1457 if (i & rtm->rtm_addrs) { 1458 sa = (struct sockaddr *)cp; 1459 switch (i) { 1460 case RTA_DST: 1461 dst = sa; 1462 break; 1463 case RTA_GATEWAY: 1464 gate = sa; 1465 break; 1466 case RTA_NETMASK: 1467 mask = sa; 1468 break; 1469 case RTA_IFP: 1470 if (sa->sa_family == AF_LINK && 1471 ((struct sockaddr_dl *)sa)->sdl_nlen) 1472 ifp = (struct sockaddr_dl *)sa; 1473 break; 1474 } 1475 cp += SA_SIZE(sa); 1476 } 1477 if (dst && mask) 1478 mask->sa_family = dst->sa_family; /* XXX */ 1479 if (dst) 1480 (void)printf("destination: %s\n", routename(dst)); 1481 if (mask) { 1482 int savenflag = nflag; 1483 1484 nflag = 1; 1485 (void)printf(" mask: %s\n", routename(mask)); 1486 nflag = savenflag; 1487 } 1488 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1489 (void)printf(" gateway: %s\n", routename(gate)); 1490 if (ifp) 1491 (void)printf(" interface: %.*s\n", 1492 ifp->sdl_nlen, ifp->sdl_data); 1493 (void)printf(" flags: "); 1494 bprintf(stdout, rtm->rtm_flags, routeflags); 1495 1496 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1497 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1498 1499 (void) printf("\n%s\n", "\ 1500 recvpipe sendpipe ssthresh rtt,msec mtu weight expire"); 1501 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1502 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1503 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1504 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1505 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1506 printf("%8ld%c ", rtm->rtm_rmx.rmx_weight, lock(WEIGHT)); 1507 if (rtm->rtm_rmx.rmx_expire) 1508 rtm->rtm_rmx.rmx_expire -= time(0); 1509 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1510 #undef lock 1511 #undef msec 1512 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1513 if (verbose) 1514 pmsg_common(rtm, msglen); 1515 else if (rtm->rtm_addrs &~ RTA_IGN) { 1516 (void) printf("sockaddrs: "); 1517 bprintf(stdout, rtm->rtm_addrs, addrnames); 1518 putchar('\n'); 1519 } 1520 #undef RTA_IGN 1521 } 1522 1523 static void 1524 pmsg_common(struct rt_msghdr *rtm, size_t msglen) 1525 { 1526 (void) printf("\nlocks: "); 1527 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1528 (void) printf(" inits: "); 1529 bprintf(stdout, rtm->rtm_inits, metricnames); 1530 if (msglen > sizeof(struct rt_msghdr)) 1531 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs, 1532 msglen - sizeof(struct rt_msghdr)); 1533 else 1534 (void) fflush(stdout); 1535 } 1536 1537 static void 1538 pmsg_addrs(char *cp, int addrs, size_t len) 1539 { 1540 struct sockaddr *sa; 1541 int i; 1542 1543 if (addrs == 0) { 1544 (void) putchar('\n'); 1545 return; 1546 } 1547 (void) printf("\nsockaddrs: "); 1548 bprintf(stdout, addrs, addrnames); 1549 (void) putchar('\n'); 1550 for (i = 1; i != 0; i <<= 1) 1551 if (i & addrs) { 1552 sa = (struct sockaddr *)cp; 1553 if (len == 0 || len < SA_SIZE(sa)) { 1554 (void) printf(errfmt, __func__, len); 1555 break; 1556 } 1557 (void) printf(" %s", routename(sa)); 1558 len -= SA_SIZE(sa); 1559 cp += SA_SIZE(sa); 1560 } 1561 (void) putchar('\n'); 1562 (void) fflush(stdout); 1563 } 1564 1565 static void 1566 bprintf(FILE *fp, int b, u_char *str) 1567 { 1568 int i; 1569 int gotsome = 0; 1570 1571 if (b == 0) 1572 return; 1573 while ((i = *str++) != 0) { 1574 if (b & (1 << (i-1))) { 1575 if (gotsome == 0) 1576 i = '<'; 1577 else 1578 i = ','; 1579 (void) putc(i, fp); 1580 gotsome = 1; 1581 for (; (i = *str) > 32; str++) 1582 (void) putc(i, fp); 1583 } else 1584 while (*str > 32) 1585 str++; 1586 } 1587 if (gotsome) 1588 (void) putc('>', fp); 1589 } 1590 1591 int 1592 keyword(const char *cp) 1593 { 1594 struct keytab *kt = keywords; 1595 1596 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0) 1597 kt++; 1598 return (kt->kt_i); 1599 } 1600 1601 static void 1602 sodump(sup su, const char *which) 1603 { 1604 switch (su->sa.sa_family) { 1605 case AF_LINK: 1606 (void) printf("%s: link %s; ", 1607 which, link_ntoa(&su->sdl)); 1608 break; 1609 case AF_INET: 1610 (void) printf("%s: inet %s; ", 1611 which, inet_ntoa(su->sin.sin_addr)); 1612 break; 1613 case AF_APPLETALK: 1614 (void) printf("%s: atalk %s; ", 1615 which, atalk_ntoa(su->sat.sat_addr)); 1616 break; 1617 } 1618 (void) fflush(stdout); 1619 } 1620 1621 /* States*/ 1622 #define VIRGIN 0 1623 #define GOTONE 1 1624 #define GOTTWO 2 1625 /* Inputs */ 1626 #define DIGIT (4*0) 1627 #define END (4*1) 1628 #define DELIM (4*2) 1629 1630 static void 1631 sockaddr(char *addr, struct sockaddr *sa) 1632 { 1633 char *cp = (char *)sa; 1634 int size = sa->sa_len; 1635 char *cplim = cp + size; 1636 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1637 1638 memset(cp, 0, size); 1639 cp++; 1640 do { 1641 if ((*addr >= '0') && (*addr <= '9')) { 1642 new = *addr - '0'; 1643 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1644 new = *addr - 'a' + 10; 1645 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1646 new = *addr - 'A' + 10; 1647 } else if (*addr == '\0') 1648 state |= END; 1649 else 1650 state |= DELIM; 1651 addr++; 1652 switch (state /* | INPUT */) { 1653 case GOTTWO | DIGIT: 1654 *cp++ = byte; /*FALLTHROUGH*/ 1655 case VIRGIN | DIGIT: 1656 state = GOTONE; byte = new; continue; 1657 case GOTONE | DIGIT: 1658 state = GOTTWO; byte = new + (byte << 4); continue; 1659 default: /* | DELIM */ 1660 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1661 case GOTONE | END: 1662 case GOTTWO | END: 1663 *cp++ = byte; /* FALLTHROUGH */ 1664 case VIRGIN | END: 1665 break; 1666 } 1667 break; 1668 } while (cp < cplim); 1669 sa->sa_len = cp - (char *)sa; 1670 } 1671 1672 static int 1673 atalk_aton(const char *text, struct at_addr *addr) 1674 { 1675 u_int net, node; 1676 1677 if (sscanf(text, "%u.%u", &net, &node) != 2 1678 || net > 0xffff || node > 0xff) 1679 return(0); 1680 addr->s_net = htons(net); 1681 addr->s_node = node; 1682 return(1); 1683 } 1684 1685 static char * 1686 atalk_ntoa(struct at_addr at) 1687 { 1688 static char buf[20]; 1689 1690 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1691 return(buf); 1692 } 1693