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 #include <sys/queue.h> 52 53 #include <net/if.h> 54 #include <net/route.h> 55 #include <net/if_dl.h> 56 #include <netinet/in.h> 57 #include <netinet/if_ether.h> 58 #include <netatalk/at.h> 59 #include <arpa/inet.h> 60 #include <netdb.h> 61 62 #include <ctype.h> 63 #include <err.h> 64 #include <errno.h> 65 #include <paths.h> 66 #include <stdbool.h> 67 #include <stdio.h> 68 #include <stdlib.h> 69 #include <string.h> 70 #include <sysexits.h> 71 #include <time.h> 72 #include <unistd.h> 73 #include <ifaddrs.h> 74 75 #define ATALK_BUF_SIZE 20 76 77 struct fibl { 78 TAILQ_ENTRY(fibl) fl_next; 79 80 int fl_num; 81 int fl_error; 82 int fl_errno; 83 }; 84 85 static struct keytab { 86 const char *kt_cp; 87 int kt_i; 88 } const keywords[] = { 89 #include "keywords.h" 90 {0, 0} 91 }; 92 93 static struct sockaddr_storage so[RTAX_MAX]; 94 static int pid, rtm_addrs; 95 static int s; 96 static int forcehost, forcenet, nflag, af, qflag, tflag; 97 static int verbose, aflen; 98 static int locking, lockrest, debugonly; 99 static struct rt_metrics rt_metrics; 100 static u_long rtm_inits; 101 static uid_t uid; 102 static int defaultfib; 103 static int numfibs; 104 static char domain[MAXHOSTNAMELEN + 1]; 105 static bool domain_initialized; 106 static int rtm_seq; 107 static char rt_line[NI_MAXHOST]; 108 static char net_line[MAXHOSTNAMELEN + 1]; 109 110 static struct { 111 struct rt_msghdr m_rtm; 112 char m_space[512]; 113 } m_rtmsg; 114 115 static TAILQ_HEAD(fibl_head_t, fibl) fibl_head; 116 117 static int atalk_aton(const char *, struct at_addr *); 118 static char *atalk_ntoa(struct at_addr, char [ATALK_BUF_SIZE]); 119 static void printb(int, const char *); 120 static void flushroutes(int argc, char *argv[]); 121 static int flushroutes_fib(int); 122 static int getaddr(int, char *, struct hostent **, int); 123 static int keyword(const char *); 124 #ifdef INET 125 static void inet_makenetandmask(u_long, struct sockaddr_in *, 126 struct sockaddr_in *, u_long); 127 #endif 128 #ifdef INET6 129 static int inet6_makenetandmask(struct sockaddr_in6 *, const char *); 130 #endif 131 static void interfaces(void); 132 static void monitor(int, char*[]); 133 static const char *netname(struct sockaddr *); 134 static void newroute(int, char **); 135 static int newroute_fib(int, char *, int); 136 static void pmsg_addrs(char *, int, size_t); 137 static void pmsg_common(struct rt_msghdr *, size_t); 138 static int prefixlen(const char *); 139 static void print_getmsg(struct rt_msghdr *, int, int); 140 static void print_rtmsg(struct rt_msghdr *, size_t); 141 static const char *routename(struct sockaddr *); 142 static int rtmsg(int, int, int); 143 static void set_metric(char *, int); 144 static int set_sofib(int); 145 static void sockaddr(char *, struct sockaddr *, size_t); 146 static void sodump(struct sockaddr *, const char *); 147 static int fiboptlist_csv(const char *, struct fibl_head_t *); 148 static int fiboptlist_range(const char *, struct fibl_head_t *); 149 150 static void usage(const char *) __dead2; 151 152 static void 153 usage(const char *cp) 154 { 155 if (cp != NULL) 156 warnx("bad keyword: %s", cp); 157 errx(EX_USAGE, "usage: route [-dnqtv] command [[modifiers] args]"); 158 /* NOTREACHED */ 159 } 160 161 int 162 main(int argc, char **argv) 163 { 164 int ch; 165 size_t len; 166 167 if (argc < 2) 168 usage(NULL); 169 170 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 171 switch(ch) { 172 case 'n': 173 nflag = 1; 174 break; 175 case 'q': 176 qflag = 1; 177 break; 178 case 'v': 179 verbose = 1; 180 break; 181 case 't': 182 tflag = 1; 183 break; 184 case 'd': 185 debugonly = 1; 186 break; 187 case '?': 188 default: 189 usage(NULL); 190 } 191 argc -= optind; 192 argv += optind; 193 194 pid = getpid(); 195 uid = geteuid(); 196 if (tflag) 197 s = open(_PATH_DEVNULL, O_WRONLY, 0); 198 else 199 s = socket(PF_ROUTE, SOCK_RAW, 0); 200 if (s < 0) 201 err(EX_OSERR, "socket"); 202 203 len = sizeof(numfibs); 204 if (sysctlbyname("net.fibs", (void *)&numfibs, &len, NULL, 0) == -1) 205 numfibs = -1; 206 207 len = sizeof(defaultfib); 208 if (numfibs != -1 && 209 sysctlbyname("net.my_fibnum", (void *)&defaultfib, &len, NULL, 210 0) == -1) 211 defaultfib = -1; 212 213 if (*argv != NULL) 214 switch (keyword(*argv)) { 215 case K_GET: 216 case K_SHOW: 217 uid = 0; 218 /* FALLTHROUGH */ 219 220 case K_CHANGE: 221 case K_ADD: 222 case K_DEL: 223 case K_DELETE: 224 newroute(argc, argv); 225 /* NOTREACHED */ 226 227 case K_MONITOR: 228 monitor(argc, argv); 229 /* NOTREACHED */ 230 231 case K_FLUSH: 232 flushroutes(argc, argv); 233 exit(0); 234 /* NOTREACHED */ 235 } 236 usage(*argv); 237 /* NOTREACHED */ 238 } 239 240 static int 241 set_sofib(int fib) 242 { 243 244 if (fib < 0) 245 return (0); 246 return (setsockopt(s, SOL_SOCKET, SO_SETFIB, (void *)&fib, 247 sizeof(fib))); 248 } 249 250 static int 251 fiboptlist_range(const char *arg, struct fibl_head_t *flh) 252 { 253 struct fibl *fl; 254 char *str0, *str, *token, *endptr; 255 int fib[2], i, error; 256 257 str0 = str = strdup(arg); 258 error = 0; 259 i = 0; 260 while ((token = strsep(&str, "-")) != NULL) { 261 switch (i) { 262 case 0: 263 case 1: 264 errno = 0; 265 fib[i] = strtol(token, &endptr, 0); 266 if (errno == 0) { 267 if (*endptr != '\0' || 268 fib[i] < 0 || 269 (numfibs != -1 && fib[i] > numfibs - 1)) 270 errno = EINVAL; 271 } 272 if (errno) 273 error = 1; 274 break; 275 default: 276 error = 1; 277 } 278 if (error) 279 goto fiboptlist_range_ret; 280 i++; 281 } 282 if (fib[0] >= fib[1]) { 283 error = 1; 284 goto fiboptlist_range_ret; 285 } 286 for (i = fib[0]; i <= fib[1]; i++) { 287 fl = calloc(1, sizeof(*fl)); 288 if (fl == NULL) { 289 error = 1; 290 goto fiboptlist_range_ret; 291 } 292 fl->fl_num = i; 293 TAILQ_INSERT_TAIL(flh, fl, fl_next); 294 } 295 fiboptlist_range_ret: 296 free(str0); 297 return (error); 298 } 299 300 #define ALLSTRLEN 64 301 static int 302 fiboptlist_csv(const char *arg, struct fibl_head_t *flh) 303 { 304 struct fibl *fl; 305 char *str0, *str, *token, *endptr; 306 int fib, error; 307 308 str0 = str = NULL; 309 if (strcmp("all", arg) == 0) { 310 str = calloc(1, ALLSTRLEN); 311 if (str == NULL) { 312 error = 1; 313 goto fiboptlist_csv_ret; 314 } 315 if (numfibs > 1) 316 snprintf(str, ALLSTRLEN - 1, "%d-%d", 0, numfibs - 1); 317 else 318 snprintf(str, ALLSTRLEN - 1, "%d", 0); 319 } else if (strcmp("default", arg) == 0) { 320 str0 = str = calloc(1, ALLSTRLEN); 321 if (str == NULL) { 322 error = 1; 323 goto fiboptlist_csv_ret; 324 } 325 snprintf(str, ALLSTRLEN - 1, "%d", defaultfib); 326 } else 327 str0 = str = strdup(arg); 328 329 error = 0; 330 while ((token = strsep(&str, ",")) != NULL) { 331 if (*token != '-' && strchr(token, '-') != NULL) { 332 error = fiboptlist_range(token, flh); 333 if (error) 334 goto fiboptlist_csv_ret; 335 } else { 336 errno = 0; 337 fib = strtol(token, &endptr, 0); 338 if (errno == 0) { 339 if (*endptr != '\0' || 340 fib < 0 || 341 (numfibs != -1 && fib > numfibs - 1)) 342 errno = EINVAL; 343 } 344 if (errno) { 345 error = 1; 346 goto fiboptlist_csv_ret; 347 } 348 fl = calloc(1, sizeof(*fl)); 349 if (fl == NULL) { 350 error = 1; 351 goto fiboptlist_csv_ret; 352 } 353 fl->fl_num = fib; 354 TAILQ_INSERT_TAIL(flh, fl, fl_next); 355 } 356 } 357 fiboptlist_csv_ret: 358 if (str0 != NULL) 359 free(str0); 360 return (error); 361 } 362 363 /* 364 * Purge all entries in the routing tables not 365 * associated with network interfaces. 366 */ 367 static void 368 flushroutes(int argc, char *argv[]) 369 { 370 struct fibl *fl; 371 int error; 372 373 if (uid != 0 && !debugonly && !tflag) 374 errx(EX_NOPERM, "must be root to alter routing table"); 375 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 376 377 TAILQ_INIT(&fibl_head); 378 while (argc > 1) { 379 argc--; 380 argv++; 381 if (**argv != '-') 382 usage(*argv); 383 switch (keyword(*argv + 1)) { 384 #ifdef INET 385 case K_INET: 386 af = AF_INET; 387 break; 388 #endif 389 #ifdef INET6 390 case K_INET6: 391 af = AF_INET6; 392 break; 393 #endif 394 case K_ATALK: 395 af = AF_APPLETALK; 396 break; 397 case K_LINK: 398 af = AF_LINK; 399 break; 400 case K_FIB: 401 if (!--argc) 402 usage(*argv); 403 error = fiboptlist_csv(*++argv, &fibl_head); 404 if (error) 405 errx(EX_USAGE, "invalid fib number: %s", *argv); 406 break; 407 default: 408 usage(*argv); 409 } 410 } 411 if (TAILQ_EMPTY(&fibl_head)) { 412 error = fiboptlist_csv("default", &fibl_head); 413 if (error) 414 errx(EX_OSERR, "fiboptlist_csv failed."); 415 } 416 TAILQ_FOREACH(fl, &fibl_head, fl_next) 417 flushroutes_fib(fl->fl_num); 418 } 419 420 static int 421 flushroutes_fib(int fib) 422 { 423 struct rt_msghdr *rtm; 424 size_t needed; 425 char *buf, *next, *lim; 426 int mib[7], rlen, seqno, count = 0; 427 int error; 428 429 error = set_sofib(fib); 430 if (error) { 431 warn("fib number %d is ignored", fib); 432 return (error); 433 } 434 435 retry: 436 mib[0] = CTL_NET; 437 mib[1] = PF_ROUTE; 438 mib[2] = 0; /* protocol */ 439 mib[3] = AF_UNSPEC; 440 mib[4] = NET_RT_DUMP; 441 mib[5] = 0; /* no flags */ 442 mib[6] = fib; 443 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0) 444 err(EX_OSERR, "route-sysctl-estimate"); 445 if ((buf = malloc(needed)) == NULL) 446 errx(EX_OSERR, "malloc failed"); 447 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) { 448 if (errno == ENOMEM && count++ < 10) { 449 warnx("Routing table grew, retrying"); 450 sleep(1); 451 free(buf); 452 goto retry; 453 } 454 err(EX_OSERR, "route-sysctl-get"); 455 } 456 lim = buf + needed; 457 if (verbose) 458 (void)printf("Examining routing table from sysctl\n"); 459 seqno = 0; /* ??? */ 460 for (next = buf; next < lim; next += rtm->rtm_msglen) { 461 rtm = (struct rt_msghdr *)(void *)next; 462 if (verbose) 463 print_rtmsg(rtm, rtm->rtm_msglen); 464 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 465 continue; 466 if (af != 0) { 467 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 468 469 if (sa->sa_family != af) 470 continue; 471 } 472 if (debugonly) 473 continue; 474 rtm->rtm_type = RTM_DELETE; 475 rtm->rtm_seq = seqno; 476 rlen = write(s, next, rtm->rtm_msglen); 477 if (rlen < 0 && errno == EPERM) 478 err(1, "write to routing socket"); 479 if (rlen < (int)rtm->rtm_msglen) { 480 warn("write to routing socket"); 481 (void)printf("got only %d for rlen\n", rlen); 482 free(buf); 483 goto retry; 484 break; 485 } 486 seqno++; 487 if (qflag) 488 continue; 489 if (verbose) 490 print_rtmsg(rtm, rlen); 491 else { 492 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 493 494 printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 495 routename(sa) : netname(sa)); 496 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa); 497 printf("%-20.20s ", routename(sa)); 498 if (fib >= 0) 499 printf("-fib %-3d ", fib); 500 printf("done\n"); 501 } 502 } 503 return (error); 504 } 505 506 static const char * 507 routename(struct sockaddr *sa) 508 { 509 struct sockaddr_dl *sdl; 510 const char *cp; 511 char atalk_buf[ATALK_BUF_SIZE]; 512 int n; 513 514 if (!domain_initialized) { 515 domain_initialized = true; 516 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 517 (cp = strchr(domain, '.'))) { 518 domain[MAXHOSTNAMELEN] = '\0'; 519 (void)strcpy(domain, cp + 1); 520 } else 521 domain[0] = '\0'; 522 } 523 524 /* If the address is zero-filled, use "default". */ 525 if (sa->sa_len == 0 && nflag == 0) 526 return ("default"); 527 #if defined(INET) || defined(INET6) 528 switch (sa->sa_family) { 529 #ifdef INET 530 case AF_INET: 531 /* If the address is zero-filled, use "default". */ 532 if (nflag == 0 && 533 ((struct sockaddr_in *)(void *)sa)->sin_addr.s_addr == 534 INADDR_ANY) 535 return("default"); 536 break; 537 #endif 538 #ifdef INET6 539 case AF_INET6: 540 /* If the address is zero-filled, use "default". */ 541 if (nflag == 0 && 542 IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)(void *)sa)->sin6_addr)) 543 return("default"); 544 break; 545 #endif 546 } 547 #endif 548 549 switch (sa->sa_family) { 550 #if defined(INET) || defined(INET6) 551 #ifdef INET 552 case AF_INET: 553 #endif 554 #ifdef INET6 555 case AF_INET6: 556 #endif 557 { 558 struct sockaddr_storage ss; 559 int error; 560 char *p; 561 562 memset(&ss, 0, sizeof(ss)); 563 if (sa->sa_len == 0) 564 ss.ss_family = sa->sa_family; 565 else 566 memcpy(&ss, sa, sa->sa_len); 567 /* Expand sa->sa_len because it could be shortened. */ 568 if (sa->sa_family == AF_INET) 569 ss.ss_len = sizeof(struct sockaddr_in); 570 else if (sa->sa_family == AF_INET6) 571 ss.ss_len = sizeof(struct sockaddr_in6); 572 error = getnameinfo((struct sockaddr *)&ss, ss.ss_len, 573 rt_line, sizeof(rt_line), NULL, 0, 574 (nflag == 0) ? 0 : NI_NUMERICHOST); 575 if (error) { 576 warnx("getnameinfo(): %s", gai_strerror(error)); 577 strncpy(rt_line, "invalid", sizeof(rt_line)); 578 } 579 580 /* Remove the domain part if any. */ 581 p = strchr(rt_line, '.'); 582 if (p != NULL && strcmp(p + 1, domain) == 0) 583 *p = '\0'; 584 585 return (rt_line); 586 break; 587 } 588 #endif 589 case AF_APPLETALK: 590 (void)snprintf(rt_line, sizeof(rt_line), "atalk %s", 591 atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr, 592 atalk_buf)); 593 break; 594 595 case AF_LINK: 596 sdl = (struct sockaddr_dl *)(void *)sa; 597 598 if (sdl->sdl_nlen == 0 && 599 sdl->sdl_alen == 0 && 600 sdl->sdl_slen == 0) { 601 n = snprintf(rt_line, sizeof(rt_line), "link#%d", 602 sdl->sdl_index); 603 if (n > (int)sizeof(rt_line)) 604 rt_line[0] = '\0'; 605 return (rt_line); 606 } else 607 return (link_ntoa(sdl)); 608 break; 609 610 default: 611 { 612 u_short *sp = (u_short *)(void *)sa; 613 u_short *splim = sp + ((sa->sa_len + 1) >> 1); 614 char *cps = rt_line + sprintf(rt_line, "(%d)", sa->sa_family); 615 char *cpe = rt_line + sizeof(rt_line); 616 617 while (++sp < splim && cps < cpe) /* start with sa->sa_data */ 618 if ((n = snprintf(cps, cpe - cps, " %x", *sp)) > 0) 619 cps += n; 620 else 621 *cps = '\0'; 622 break; 623 } 624 } 625 return (rt_line); 626 } 627 628 /* 629 * Return the name of the network whose address is given. 630 * The address is assumed to be that of a net, not a host. 631 */ 632 static const char * 633 netname(struct sockaddr *sa) 634 { 635 struct sockaddr_dl *sdl; 636 char atalk_buf[ATALK_BUF_SIZE]; 637 int n; 638 #ifdef INET 639 struct netent *np = NULL; 640 const char *cp = NULL; 641 u_long i; 642 #endif 643 644 switch (sa->sa_family) { 645 #ifdef INET 646 case AF_INET: 647 { 648 struct in_addr in; 649 650 in = ((struct sockaddr_in *)(void *)sa)->sin_addr; 651 i = in.s_addr = ntohl(in.s_addr); 652 if (in.s_addr == 0) 653 cp = "default"; 654 else if (!nflag) { 655 np = getnetbyaddr(i, AF_INET); 656 if (np != NULL) 657 cp = np->n_name; 658 } 659 #define C(x) (unsigned)((x) & 0xff) 660 if (cp != NULL) 661 strncpy(net_line, cp, sizeof(net_line)); 662 else if ((in.s_addr & 0xffffff) == 0) 663 (void)sprintf(net_line, "%u", C(in.s_addr >> 24)); 664 else if ((in.s_addr & 0xffff) == 0) 665 (void)sprintf(net_line, "%u.%u", C(in.s_addr >> 24), 666 C(in.s_addr >> 16)); 667 else if ((in.s_addr & 0xff) == 0) 668 (void)sprintf(net_line, "%u.%u.%u", C(in.s_addr >> 24), 669 C(in.s_addr >> 16), C(in.s_addr >> 8)); 670 else 671 (void)sprintf(net_line, "%u.%u.%u.%u", C(in.s_addr >> 24), 672 C(in.s_addr >> 16), C(in.s_addr >> 8), 673 C(in.s_addr)); 674 #undef C 675 break; 676 } 677 #endif 678 #ifdef INET6 679 case AF_INET6: 680 { 681 struct sockaddr_in6 sin6; 682 int niflags = 0; 683 684 memset(&sin6, 0, sizeof(sin6)); 685 memcpy(&sin6, sa, sa->sa_len); 686 sin6.sin6_len = sizeof(sin6); 687 sin6.sin6_family = AF_INET6; 688 if (nflag) 689 niflags |= NI_NUMERICHOST; 690 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 691 net_line, sizeof(net_line), NULL, 0, niflags) != 0) 692 strncpy(net_line, "invalid", sizeof(net_line)); 693 694 return(net_line); 695 } 696 #endif 697 698 case AF_APPLETALK: 699 (void)snprintf(net_line, sizeof(net_line), "atalk %s", 700 atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr, 701 atalk_buf)); 702 break; 703 704 case AF_LINK: 705 sdl = (struct sockaddr_dl *)(void *)sa; 706 707 if (sdl->sdl_nlen == 0 && 708 sdl->sdl_alen == 0 && 709 sdl->sdl_slen == 0) { 710 n = snprintf(net_line, sizeof(net_line), "link#%d", 711 sdl->sdl_index); 712 if (n > (int)sizeof(net_line)) 713 net_line[0] = '\0'; 714 return (net_line); 715 } else 716 return (link_ntoa(sdl)); 717 break; 718 719 default: 720 { 721 u_short *sp = (u_short *)(void *)sa->sa_data; 722 u_short *splim = sp + ((sa->sa_len + 1)>>1); 723 char *cps = net_line + sprintf(net_line, "af %d:", sa->sa_family); 724 char *cpe = net_line + sizeof(net_line); 725 726 while (sp < splim && cps < cpe) 727 if ((n = snprintf(cps, cpe - cps, " %x", *sp++)) > 0) 728 cps += n; 729 else 730 *cps = '\0'; 731 break; 732 } 733 } 734 return (net_line); 735 } 736 737 static void 738 set_metric(char *value, int key) 739 { 740 int flag = 0; 741 char *endptr; 742 u_long noval, *valp = &noval; 743 744 switch (key) { 745 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 746 caseof(K_MTU, RTV_MTU, rmx_mtu); 747 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 748 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 749 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 750 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 751 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 752 caseof(K_RTT, RTV_RTT, rmx_rtt); 753 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 754 caseof(K_WEIGHT, RTV_WEIGHT, rmx_weight); 755 } 756 rtm_inits |= flag; 757 if (lockrest || locking) 758 rt_metrics.rmx_locks |= flag; 759 if (locking) 760 locking = 0; 761 errno = 0; 762 *valp = strtol(value, &endptr, 0); 763 if (errno == 0 && *endptr != '\0') 764 errno = EINVAL; 765 if (errno) 766 err(EX_USAGE, "%s", value); 767 if (flag & RTV_EXPIRE && (value[0] == '+' || value[0] == '-')) { 768 struct timespec ts; 769 770 clock_gettime(CLOCK_REALTIME_FAST, &ts); 771 *valp += ts.tv_sec; 772 } 773 } 774 775 #define F_ISHOST 0x01 776 #define F_FORCENET 0x02 777 #define F_FORCEHOST 0x04 778 #define F_PROXY 0x08 779 #define F_INTERFACE 0x10 780 781 static void 782 newroute(int argc, char **argv) 783 { 784 struct hostent *hp; 785 struct fibl *fl; 786 char *cmd; 787 const char *dest, *gateway, *errmsg; 788 int key, error, flags, nrflags, fibnum; 789 790 if (uid != 0 && !debugonly && !tflag) 791 errx(EX_NOPERM, "must be root to alter routing table"); 792 dest = NULL; 793 gateway = NULL; 794 flags = RTF_STATIC; 795 nrflags = 0; 796 hp = NULL; 797 TAILQ_INIT(&fibl_head); 798 799 cmd = argv[0]; 800 if (*cmd != 'g' && *cmd != 's') 801 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 802 while (--argc > 0) { 803 if (**(++argv)== '-') { 804 switch (key = keyword(1 + *argv)) { 805 case K_LINK: 806 af = AF_LINK; 807 aflen = sizeof(struct sockaddr_dl); 808 break; 809 #ifdef INET 810 case K_INET: 811 af = AF_INET; 812 aflen = sizeof(struct sockaddr_in); 813 break; 814 #endif 815 #ifdef INET6 816 case K_INET6: 817 af = AF_INET6; 818 aflen = sizeof(struct sockaddr_in6); 819 break; 820 #endif 821 case K_ATALK: 822 af = AF_APPLETALK; 823 aflen = sizeof(struct sockaddr_at); 824 break; 825 case K_SA: 826 af = PF_ROUTE; 827 aflen = sizeof(struct sockaddr_storage); 828 break; 829 case K_IFACE: 830 case K_INTERFACE: 831 nrflags |= F_INTERFACE; 832 break; 833 case K_NOSTATIC: 834 flags &= ~RTF_STATIC; 835 break; 836 case K_LOCK: 837 locking = 1; 838 break; 839 case K_LOCKREST: 840 lockrest = 1; 841 break; 842 case K_HOST: 843 nrflags |= F_FORCEHOST; 844 break; 845 case K_REJECT: 846 flags |= RTF_REJECT; 847 break; 848 case K_BLACKHOLE: 849 flags |= RTF_BLACKHOLE; 850 break; 851 case K_PROTO1: 852 flags |= RTF_PROTO1; 853 break; 854 case K_PROTO2: 855 flags |= RTF_PROTO2; 856 break; 857 case K_PROTO3: 858 flags |= RTF_PROTO3; 859 break; 860 case K_PROXY: 861 nrflags |= F_PROXY; 862 break; 863 case K_XRESOLVE: 864 flags |= RTF_XRESOLVE; 865 break; 866 case K_STATIC: 867 flags |= RTF_STATIC; 868 break; 869 case K_STICKY: 870 flags |= RTF_STICKY; 871 break; 872 case K_NOSTICK: 873 flags &= ~RTF_STICKY; 874 break; 875 case K_FIB: 876 if (!--argc) 877 usage(NULL); 878 error = fiboptlist_csv(*++argv, &fibl_head); 879 if (error) 880 errx(EX_USAGE, 881 "invalid fib number: %s", *argv); 882 break; 883 case K_IFA: 884 if (!--argc) 885 usage(NULL); 886 getaddr(RTAX_IFA, *++argv, 0, nrflags); 887 break; 888 case K_IFP: 889 if (!--argc) 890 usage(NULL); 891 getaddr(RTAX_IFP, *++argv, 0, nrflags); 892 break; 893 case K_GENMASK: 894 if (!--argc) 895 usage(NULL); 896 getaddr(RTAX_GENMASK, *++argv, 0, nrflags); 897 break; 898 case K_GATEWAY: 899 if (!--argc) 900 usage(NULL); 901 getaddr(RTAX_GATEWAY, *++argv, 0, nrflags); 902 gateway = *argv; 903 break; 904 case K_DST: 905 if (!--argc) 906 usage(NULL); 907 if (getaddr(RTAX_DST, *++argv, &hp, nrflags)) 908 nrflags |= F_ISHOST; 909 dest = *argv; 910 break; 911 case K_NETMASK: 912 if (!--argc) 913 usage(NULL); 914 getaddr(RTAX_NETMASK, *++argv, 0, nrflags); 915 /* FALLTHROUGH */ 916 case K_NET: 917 nrflags |= F_FORCENET; 918 break; 919 case K_PREFIXLEN: 920 if (!--argc) 921 usage(NULL); 922 if (prefixlen(*++argv) == -1) { 923 nrflags &= ~F_FORCENET; 924 nrflags |= F_ISHOST; 925 } else { 926 nrflags |= F_FORCENET; 927 nrflags &= ~F_ISHOST; 928 } 929 break; 930 case K_MTU: 931 case K_HOPCOUNT: 932 case K_EXPIRE: 933 case K_RECVPIPE: 934 case K_SENDPIPE: 935 case K_SSTHRESH: 936 case K_RTT: 937 case K_RTTVAR: 938 case K_WEIGHT: 939 if (!--argc) 940 usage(NULL); 941 set_metric(*++argv, key); 942 break; 943 default: 944 usage(1+*argv); 945 } 946 } else { 947 if ((rtm_addrs & RTA_DST) == 0) { 948 dest = *argv; 949 if (getaddr(RTAX_DST, *argv, &hp, nrflags)) 950 nrflags |= F_ISHOST; 951 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 952 gateway = *argv; 953 getaddr(RTAX_GATEWAY, *argv, &hp, nrflags); 954 } else { 955 getaddr(RTAX_NETMASK, *argv, 0, nrflags); 956 nrflags |= F_FORCENET; 957 } 958 } 959 } 960 961 if (so[RTAX_DST].ss_len == 0) { 962 warnx("destination parameter required"); 963 usage(NULL); 964 } 965 966 if (nrflags & F_FORCEHOST) { 967 nrflags |= F_ISHOST; 968 #ifdef INET6 969 if (af == AF_INET6) { 970 rtm_addrs &= ~RTA_NETMASK; 971 memset(&so[RTAX_NETMASK], 0, sizeof(so[RTAX_NETMASK])); 972 } 973 #endif 974 } 975 if (nrflags & F_FORCENET) 976 nrflags &= ~F_ISHOST; 977 flags |= RTF_UP; 978 if (nrflags & F_ISHOST) 979 flags |= RTF_HOST; 980 if ((nrflags & F_INTERFACE) == 0) 981 flags |= RTF_GATEWAY; 982 if (nrflags & F_PROXY) 983 flags |= RTF_ANNOUNCE; 984 if (dest == NULL) 985 dest = ""; 986 if (gateway == NULL) 987 gateway = ""; 988 989 if (TAILQ_EMPTY(&fibl_head)) { 990 error = fiboptlist_csv("default", &fibl_head); 991 if (error) 992 errx(EX_OSERR, "fiboptlist_csv failed."); 993 } 994 error = 0; 995 TAILQ_FOREACH(fl, &fibl_head, fl_next) { 996 fl->fl_error = newroute_fib(fl->fl_num, cmd, flags); 997 if (fl->fl_error) 998 fl->fl_errno = errno; 999 error += fl->fl_error; 1000 } 1001 if (*cmd == 'g' || *cmd == 's') 1002 exit(error); 1003 1004 error = 0; 1005 if (!qflag) { 1006 fibnum = 0; 1007 TAILQ_FOREACH(fl, &fibl_head, fl_next) { 1008 if (fl->fl_error == 0) 1009 fibnum++; 1010 } 1011 if (fibnum > 0) { 1012 int firstfib = 1; 1013 1014 printf("%s %s %s", cmd, 1015 (nrflags & F_ISHOST) ? "host" : "net", dest); 1016 if (*gateway) 1017 printf(": gateway %s", gateway); 1018 1019 if (numfibs > 1) { 1020 TAILQ_FOREACH(fl, &fibl_head, fl_next) { 1021 if (fl->fl_error == 0 1022 && fl->fl_num >= 0) { 1023 if (firstfib) { 1024 printf(" fib "); 1025 firstfib = 0; 1026 } 1027 printf("%d", fl->fl_num); 1028 if (fibnum-- > 1) 1029 printf(","); 1030 } 1031 } 1032 } 1033 printf("\n"); 1034 } 1035 1036 fibnum = 0; 1037 TAILQ_FOREACH(fl, &fibl_head, fl_next) { 1038 if (fl->fl_error != 0) { 1039 printf("%s %s %s", cmd, (nrflags & F_ISHOST) 1040 ? "host" : "net", dest); 1041 if (*gateway) 1042 printf(": gateway %s", gateway); 1043 1044 if (fl->fl_num >= 0) 1045 printf(" fib %d", fl->fl_num); 1046 1047 switch (fl->fl_errno) { 1048 case ESRCH: 1049 errmsg = "not in table"; 1050 break; 1051 case EBUSY: 1052 errmsg = "entry in use"; 1053 break; 1054 case ENOBUFS: 1055 errmsg = "not enough memory"; 1056 break; 1057 case EADDRINUSE: 1058 /* 1059 * handle recursion avoidance 1060 * in rt_setgate() 1061 */ 1062 errmsg = "gateway uses the same route"; 1063 break; 1064 case EEXIST: 1065 errmsg = "route already in table"; 1066 break; 1067 default: 1068 errmsg = strerror(fl->fl_errno); 1069 break; 1070 } 1071 printf(": %s\n", errmsg); 1072 error = 1; 1073 } 1074 } 1075 } 1076 exit(error); 1077 } 1078 1079 static int 1080 newroute_fib(int fib, char *cmd, int flags) 1081 { 1082 int error; 1083 1084 error = set_sofib(fib); 1085 if (error) { 1086 warn("fib number %d is ignored", fib); 1087 return (error); 1088 } 1089 1090 error = rtmsg(*cmd, flags, fib); 1091 return (error); 1092 } 1093 1094 #ifdef INET 1095 static void 1096 inet_makenetandmask(u_long net, struct sockaddr_in *sin, 1097 struct sockaddr_in *sin_mask, u_long bits) 1098 { 1099 u_long mask = 0; 1100 1101 rtm_addrs |= RTA_NETMASK; 1102 1103 /* 1104 * MSB of net should be meaningful. 0/0 is exception. 1105 */ 1106 if (net > 0) 1107 while ((net & 0xff000000) == 0) 1108 net <<= 8; 1109 1110 /* 1111 * If no /xx was specified we must calculate the 1112 * CIDR address. 1113 */ 1114 if ((bits == 0) && (net != 0)) { 1115 u_long i, j; 1116 1117 for(i = 0, j = 0xff; i < 4; i++) { 1118 if (net & j) { 1119 break; 1120 } 1121 j <<= 8; 1122 } 1123 /* i holds the first non zero bit */ 1124 bits = 32 - (i*8); 1125 } 1126 if (bits != 0) 1127 mask = 0xffffffff << (32 - bits); 1128 1129 sin->sin_addr.s_addr = htonl(net); 1130 sin_mask->sin_addr.s_addr = htonl(mask); 1131 sin_mask->sin_len = sizeof(struct sockaddr_in); 1132 sin_mask->sin_family = AF_INET; 1133 } 1134 #endif 1135 1136 #ifdef INET6 1137 /* 1138 * XXX the function may need more improvement... 1139 */ 1140 static int 1141 inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen) 1142 { 1143 struct in6_addr in6; 1144 1145 if (plen == NULL) { 1146 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 1147 sin6->sin6_scope_id == 0) { 1148 plen = "0"; 1149 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 1150 /* aggregatable global unicast - RFC2374 */ 1151 memset(&in6, 0, sizeof(in6)); 1152 if (!memcmp(&sin6->sin6_addr.s6_addr[8], 1153 &in6.s6_addr[8], 8)) 1154 plen = "64"; 1155 } 1156 } 1157 1158 if (plen == NULL || strcmp(plen, "128") == 0) 1159 return (1); 1160 rtm_addrs |= RTA_NETMASK; 1161 prefixlen(plen); 1162 return (0); 1163 } 1164 #endif 1165 1166 /* 1167 * Interpret an argument as a network address of some kind, 1168 * returning 1 if a host address, 0 if a network address. 1169 */ 1170 static int 1171 getaddr(int idx, char *str, struct hostent **hpp, int nrflags) 1172 { 1173 struct sockaddr *sa; 1174 #if defined(INET) 1175 struct sockaddr_in *sin; 1176 struct hostent *hp; 1177 struct netent *np; 1178 u_long val; 1179 char *q; 1180 #elif defined(INET6) 1181 char *q; 1182 #endif 1183 1184 if (idx < 0 || idx >= RTAX_MAX) 1185 usage("internal error"); 1186 if (af == 0) { 1187 #if defined(INET) 1188 af = AF_INET; 1189 aflen = sizeof(struct sockaddr_in); 1190 #elif defined(INET6) 1191 af = AF_INET6; 1192 aflen = sizeof(struct sockaddr_in6); 1193 #else 1194 af = AF_LINK; 1195 aflen = sizeof(struct sockaddr_dl); 1196 #endif 1197 } 1198 #ifndef INET 1199 hpp = NULL; 1200 #endif 1201 rtm_addrs |= (1 << idx); 1202 sa = (struct sockaddr *)&so[idx]; 1203 sa->sa_family = af; 1204 sa->sa_len = aflen; 1205 1206 switch (idx) { 1207 case RTAX_GATEWAY: 1208 if (nrflags & F_INTERFACE) { 1209 struct ifaddrs *ifap, *ifa; 1210 struct sockaddr_dl *sdl0 = (struct sockaddr_dl *)(void *)sa; 1211 struct sockaddr_dl *sdl = NULL; 1212 1213 if (getifaddrs(&ifap)) 1214 err(EX_OSERR, "getifaddrs"); 1215 1216 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) { 1217 if (ifa->ifa_addr->sa_family != AF_LINK) 1218 continue; 1219 1220 if (strcmp(str, ifa->ifa_name) != 0) 1221 continue; 1222 1223 sdl = (struct sockaddr_dl *)(void *)ifa->ifa_addr; 1224 } 1225 /* If we found it, then use it */ 1226 if (sdl != NULL) { 1227 /* 1228 * Note that we need to copy before calling 1229 * freeifaddrs(). 1230 */ 1231 memcpy(sdl0, sdl, sdl->sdl_len); 1232 } 1233 freeifaddrs(ifap); 1234 if (sdl != NULL) 1235 return(1); 1236 } 1237 break; 1238 case RTAX_IFP: 1239 sa->sa_family = AF_LINK; 1240 break; 1241 } 1242 if (strcmp(str, "default") == 0) { 1243 /* 1244 * Default is net 0.0.0.0/0 1245 */ 1246 switch (idx) { 1247 case RTAX_DST: 1248 forcenet++; 1249 getaddr(RTAX_NETMASK, str, 0, nrflags); 1250 break; 1251 } 1252 return (0); 1253 } 1254 switch (sa->sa_family) { 1255 #ifdef INET6 1256 case AF_INET6: 1257 { 1258 struct addrinfo hints, *res; 1259 int ecode; 1260 1261 q = NULL; 1262 if (idx == RTAX_DST && (q = strchr(str, '/')) != NULL) 1263 *q = '\0'; 1264 memset(&hints, 0, sizeof(hints)); 1265 hints.ai_family = sa->sa_family; 1266 hints.ai_socktype = SOCK_DGRAM; 1267 ecode = getaddrinfo(str, NULL, &hints, &res); 1268 if (ecode != 0 || res->ai_family != AF_INET6 || 1269 res->ai_addrlen != sizeof(struct sockaddr_in6)) 1270 errx(EX_OSERR, "%s: %s", str, gai_strerror(ecode)); 1271 memcpy(sa, res->ai_addr, res->ai_addrlen); 1272 freeaddrinfo(res); 1273 if (q != NULL) 1274 *q++ = '/'; 1275 if (idx == RTAX_DST) 1276 return (inet6_makenetandmask((struct sockaddr_in6 *)(void *)sa, q)); 1277 return (0); 1278 } 1279 #endif /* INET6 */ 1280 1281 case AF_APPLETALK: 1282 { 1283 struct sockaddr_at *sat = (struct sockaddr_at *)(void *)sa; 1284 1285 if (!atalk_aton(str, &sat->sat_addr)) 1286 errx(EX_NOHOST, "bad address: %s", str); 1287 rtm_addrs |= RTA_NETMASK; 1288 return(forcehost || sat->sat_addr.s_node != 0); 1289 } 1290 case AF_LINK: 1291 link_addr(str, (struct sockaddr_dl *)(void *)sa); 1292 return (1); 1293 1294 case PF_ROUTE: 1295 sockaddr(str, sa, sizeof(struct sockaddr_storage)); 1296 return (1); 1297 #ifdef INET 1298 case AF_INET: 1299 #endif 1300 default: 1301 break; 1302 } 1303 1304 #ifdef INET 1305 sin = (struct sockaddr_in *)(void *)sa; 1306 if (hpp == NULL) 1307 hpp = &hp; 1308 *hpp = NULL; 1309 1310 q = strchr(str,'/'); 1311 if (q != NULL && idx == RTAX_DST) { 1312 *q = '\0'; 1313 if ((val = inet_network(str)) != INADDR_NONE) { 1314 inet_makenetandmask(val, sin, 1315 (struct sockaddr_in *)&so[RTAX_NETMASK], 1316 strtoul(q+1, 0, 0)); 1317 return (0); 1318 } 1319 *q = '/'; 1320 } 1321 if ((idx != RTAX_DST || forcenet == 0) && 1322 inet_aton(str, &sin->sin_addr)) { 1323 val = sin->sin_addr.s_addr; 1324 if (idx != RTAX_DST || forcehost || 1325 inet_lnaof(sin->sin_addr) != INADDR_ANY) 1326 return (1); 1327 else { 1328 val = ntohl(val); 1329 goto netdone; 1330 } 1331 } 1332 if (idx == RTAX_DST && forcehost == 0 && 1333 ((val = inet_network(str)) != INADDR_NONE || 1334 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) { 1335 netdone: 1336 inet_makenetandmask(val, sin, 1337 (struct sockaddr_in *)&so[RTAX_NETMASK], 0); 1338 return (0); 1339 } 1340 hp = gethostbyname(str); 1341 if (hp != NULL) { 1342 *hpp = hp; 1343 sin->sin_family = hp->h_addrtype; 1344 memmove((char *)&sin->sin_addr, hp->h_addr, 1345 MIN((size_t)hp->h_length, sizeof(sin->sin_addr))); 1346 return (1); 1347 } 1348 #endif 1349 errx(EX_NOHOST, "bad address: %s", str); 1350 } 1351 1352 static int 1353 prefixlen(const char *str) 1354 { 1355 int len = atoi(str), q, r; 1356 int max; 1357 char *p; 1358 1359 rtm_addrs |= RTA_NETMASK; 1360 switch (af) { 1361 #ifdef INET6 1362 case AF_INET6: 1363 { 1364 struct sockaddr_in6 *sin6 = 1365 (struct sockaddr_in6 *)&so[RTAX_NETMASK]; 1366 1367 max = 128; 1368 p = (char *)&sin6->sin6_addr; 1369 sin6->sin6_family = AF_INET6; 1370 sin6->sin6_len = sizeof(*sin6); 1371 break; 1372 } 1373 #endif 1374 #ifdef INET 1375 case AF_INET: 1376 { 1377 struct sockaddr_in *sin = 1378 (struct sockaddr_in *)&so[RTAX_NETMASK]; 1379 1380 max = 32; 1381 p = (char *)&sin->sin_addr; 1382 sin->sin_family = AF_INET; 1383 sin->sin_len = sizeof(*sin); 1384 break; 1385 } 1386 #endif 1387 default: 1388 errx(EX_OSERR, "prefixlen not supported in this af"); 1389 } 1390 1391 if (len < 0 || max < len) 1392 errx(EX_USAGE, "%s: invalid prefixlen", str); 1393 1394 q = len >> 3; 1395 r = len & 7; 1396 memset((void *)p, 0, max / 8); 1397 if (q > 0) 1398 memset((void *)p, 0xff, q); 1399 if (r > 0) 1400 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1401 if (len == max) 1402 return (-1); 1403 else 1404 return (len); 1405 } 1406 1407 static void 1408 interfaces(void) 1409 { 1410 size_t needed; 1411 int mib[6]; 1412 char *buf, *lim, *next, count = 0; 1413 struct rt_msghdr *rtm; 1414 1415 retry2: 1416 mib[0] = CTL_NET; 1417 mib[1] = PF_ROUTE; 1418 mib[2] = 0; /* protocol */ 1419 mib[3] = AF_UNSPEC; 1420 mib[4] = NET_RT_IFLIST; 1421 mib[5] = 0; /* no flags */ 1422 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0) 1423 err(EX_OSERR, "route-sysctl-estimate"); 1424 if ((buf = malloc(needed)) == NULL) 1425 errx(EX_OSERR, "malloc failed"); 1426 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) { 1427 if (errno == ENOMEM && count++ < 10) { 1428 warnx("Routing table grew, retrying"); 1429 sleep(1); 1430 free(buf); 1431 goto retry2; 1432 } 1433 err(EX_OSERR, "actual retrieval of interface table"); 1434 } 1435 lim = buf + needed; 1436 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1437 rtm = (struct rt_msghdr *)(void *)next; 1438 print_rtmsg(rtm, rtm->rtm_msglen); 1439 } 1440 } 1441 1442 static void 1443 monitor(int argc, char *argv[]) 1444 { 1445 int n, fib, error; 1446 char msg[2048], *endptr; 1447 1448 fib = defaultfib; 1449 while (argc > 1) { 1450 argc--; 1451 argv++; 1452 if (**argv != '-') 1453 usage(*argv); 1454 switch (keyword(*argv + 1)) { 1455 case K_FIB: 1456 if (!--argc) 1457 usage(*argv); 1458 errno = 0; 1459 fib = strtol(*++argv, &endptr, 0); 1460 if (errno == 0) { 1461 if (*endptr != '\0' || 1462 fib < 0 || 1463 (numfibs != -1 && fib > numfibs - 1)) 1464 errno = EINVAL; 1465 } 1466 if (errno) 1467 errx(EX_USAGE, "invalid fib number: %s", *argv); 1468 break; 1469 default: 1470 usage(*argv); 1471 } 1472 } 1473 error = set_sofib(fib); 1474 if (error) 1475 errx(EX_USAGE, "invalid fib number: %d", fib); 1476 1477 verbose = 1; 1478 if (debugonly) { 1479 interfaces(); 1480 exit(0); 1481 } 1482 for (;;) { 1483 time_t now; 1484 n = read(s, msg, 2048); 1485 now = time(NULL); 1486 (void)printf("\ngot message of size %d on %s", n, ctime(&now)); 1487 print_rtmsg((struct rt_msghdr *)(void *)msg, n); 1488 } 1489 } 1490 1491 static int 1492 rtmsg(int cmd, int flags, int fib) 1493 { 1494 int rlen; 1495 char *cp = m_rtmsg.m_space; 1496 int l; 1497 1498 #define NEXTADDR(w, u) \ 1499 if (rtm_addrs & (w)) { \ 1500 l = (((struct sockaddr *)&(u))->sa_len == 0) ? \ 1501 sizeof(long) : \ 1502 1 + ((((struct sockaddr *)&(u))->sa_len - 1) \ 1503 | (sizeof(long) - 1)); \ 1504 memmove(cp, (char *)&(u), l); \ 1505 cp += l; \ 1506 if (verbose) \ 1507 sodump((struct sockaddr *)&(u), #w); \ 1508 } 1509 1510 errno = 0; 1511 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1512 if (cmd == 'a') 1513 cmd = RTM_ADD; 1514 else if (cmd == 'c') 1515 cmd = RTM_CHANGE; 1516 else if (cmd == 'g' || cmd == 's') { 1517 cmd = RTM_GET; 1518 if (so[RTAX_IFP].ss_family == 0) { 1519 so[RTAX_IFP].ss_family = AF_LINK; 1520 so[RTAX_IFP].ss_len = sizeof(struct sockaddr_dl); 1521 rtm_addrs |= RTA_IFP; 1522 } 1523 } else 1524 cmd = RTM_DELETE; 1525 #define rtm m_rtmsg.m_rtm 1526 rtm.rtm_type = cmd; 1527 rtm.rtm_flags = flags; 1528 rtm.rtm_version = RTM_VERSION; 1529 rtm.rtm_seq = ++rtm_seq; 1530 rtm.rtm_addrs = rtm_addrs; 1531 rtm.rtm_rmx = rt_metrics; 1532 rtm.rtm_inits = rtm_inits; 1533 1534 NEXTADDR(RTA_DST, so[RTAX_DST]); 1535 NEXTADDR(RTA_GATEWAY, so[RTAX_GATEWAY]); 1536 NEXTADDR(RTA_NETMASK, so[RTAX_NETMASK]); 1537 NEXTADDR(RTA_GENMASK, so[RTAX_GENMASK]); 1538 NEXTADDR(RTA_IFP, so[RTAX_IFP]); 1539 NEXTADDR(RTA_IFA, so[RTAX_IFA]); 1540 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1541 if (verbose) 1542 print_rtmsg(&rtm, l); 1543 if (debugonly) 1544 return (0); 1545 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1546 if (errno == EPERM) 1547 err(1, "writing to routing socket"); 1548 warn("writing to routing socket"); 1549 return (-1); 1550 } 1551 if (cmd == RTM_GET) { 1552 do { 1553 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1554 } while (l > 0 && (rtm.rtm_seq != rtm_seq || rtm.rtm_pid != pid)); 1555 if (l < 0) 1556 warn("read from routing socket"); 1557 else 1558 print_getmsg(&rtm, l, fib); 1559 } 1560 #undef rtm 1561 return (0); 1562 } 1563 1564 static const char *const msgtypes[] = { 1565 "", 1566 "RTM_ADD: Add Route", 1567 "RTM_DELETE: Delete Route", 1568 "RTM_CHANGE: Change Metrics or flags", 1569 "RTM_GET: Report Metrics", 1570 "RTM_LOSING: Kernel Suspects Partitioning", 1571 "RTM_REDIRECT: Told to use different route", 1572 "RTM_MISS: Lookup failed on this address", 1573 "RTM_LOCK: fix specified metrics", 1574 "RTM_OLDADD: caused by SIOCADDRT", 1575 "RTM_OLDDEL: caused by SIOCDELRT", 1576 "RTM_RESOLVE: Route created by cloning", 1577 "RTM_NEWADDR: address being added to iface", 1578 "RTM_DELADDR: address being removed from iface", 1579 "RTM_IFINFO: iface status change", 1580 "RTM_NEWMADDR: new multicast group membership on iface", 1581 "RTM_DELMADDR: multicast group membership removed from iface", 1582 "RTM_IFANNOUNCE: interface arrival/departure", 1583 "RTM_IEEE80211: IEEE 802.11 wireless event", 1584 }; 1585 1586 static const char metricnames[] = 1587 "\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire" 1588 "\1mtu"; 1589 static const char routeflags[] = 1590 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE" 1591 "\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE" 1592 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3" 1593 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY"; 1594 static const char ifnetflags[] = 1595 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1596 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1597 "\017LINK2\020MULTICAST"; 1598 static const char addrnames[] = 1599 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1600 1601 static const char errfmt[] = 1602 "\n%s: truncated route message, only %zu bytes left\n"; 1603 1604 static void 1605 print_rtmsg(struct rt_msghdr *rtm, size_t msglen) 1606 { 1607 struct if_msghdr *ifm; 1608 struct ifa_msghdr *ifam; 1609 #ifdef RTM_NEWMADDR 1610 struct ifma_msghdr *ifmam; 1611 #endif 1612 struct if_announcemsghdr *ifan; 1613 const char *state; 1614 1615 if (verbose == 0) 1616 return; 1617 if (rtm->rtm_version != RTM_VERSION) { 1618 (void)printf("routing message version %d not understood\n", 1619 rtm->rtm_version); 1620 return; 1621 } 1622 if (rtm->rtm_type < nitems(msgtypes)) 1623 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1624 else 1625 (void)printf("unknown type %d: ", rtm->rtm_type); 1626 (void)printf("len %d, ", rtm->rtm_msglen); 1627 1628 #define REQUIRE(x) do { \ 1629 if (msglen < sizeof(x)) \ 1630 goto badlen; \ 1631 else \ 1632 msglen -= sizeof(x); \ 1633 } while (0) 1634 1635 switch (rtm->rtm_type) { 1636 case RTM_IFINFO: 1637 REQUIRE(struct if_msghdr); 1638 ifm = (struct if_msghdr *)rtm; 1639 (void)printf("if# %d, ", ifm->ifm_index); 1640 switch (ifm->ifm_data.ifi_link_state) { 1641 case LINK_STATE_DOWN: 1642 state = "down"; 1643 break; 1644 case LINK_STATE_UP: 1645 state = "up"; 1646 break; 1647 default: 1648 state = "unknown"; 1649 break; 1650 } 1651 (void)printf("link: %s, flags:", state); 1652 printb(ifm->ifm_flags, ifnetflags); 1653 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs, msglen); 1654 break; 1655 case RTM_NEWADDR: 1656 case RTM_DELADDR: 1657 REQUIRE(struct ifa_msghdr); 1658 ifam = (struct ifa_msghdr *)rtm; 1659 (void)printf("metric %d, flags:", ifam->ifam_metric); 1660 printb(ifam->ifam_flags, routeflags); 1661 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs, msglen); 1662 break; 1663 #ifdef RTM_NEWMADDR 1664 case RTM_NEWMADDR: 1665 case RTM_DELMADDR: 1666 REQUIRE(struct ifma_msghdr); 1667 ifmam = (struct ifma_msghdr *)rtm; 1668 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs, msglen); 1669 break; 1670 #endif 1671 case RTM_IFANNOUNCE: 1672 REQUIRE(struct if_announcemsghdr); 1673 ifan = (struct if_announcemsghdr *)rtm; 1674 (void)printf("if# %d, what: ", ifan->ifan_index); 1675 switch (ifan->ifan_what) { 1676 case IFAN_ARRIVAL: 1677 (void)printf("arrival"); 1678 break; 1679 case IFAN_DEPARTURE: 1680 printf("departure"); 1681 break; 1682 default: 1683 printf("#%d", ifan->ifan_what); 1684 break; 1685 } 1686 printf("\n"); 1687 fflush(stdout); 1688 break; 1689 1690 default: 1691 printf("pid: %ld, seq %d, errno %d, flags:", 1692 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1693 printb(rtm->rtm_flags, routeflags); 1694 pmsg_common(rtm, msglen); 1695 } 1696 1697 return; 1698 1699 badlen: 1700 (void)printf(errfmt, __func__, msglen); 1701 #undef REQUIRE 1702 } 1703 1704 static void 1705 print_getmsg(struct rt_msghdr *rtm, int msglen, int fib) 1706 { 1707 struct sockaddr *sp[RTAX_MAX]; 1708 struct timespec ts; 1709 char *cp; 1710 int i; 1711 1712 memset(sp, 0, sizeof(sp)); 1713 (void)printf(" route to: %s\n", 1714 routename((struct sockaddr *)&so[RTAX_DST])); 1715 if (rtm->rtm_version != RTM_VERSION) { 1716 warnx("routing message version %d not understood", 1717 rtm->rtm_version); 1718 return; 1719 } 1720 if (rtm->rtm_msglen > msglen) { 1721 warnx("message length mismatch, in packet %d, returned %d", 1722 rtm->rtm_msglen, msglen); 1723 return; 1724 } 1725 if (rtm->rtm_errno) { 1726 errno = rtm->rtm_errno; 1727 warn("message indicates error %d", errno); 1728 return; 1729 } 1730 cp = ((char *)(rtm + 1)); 1731 for (i = 0; i < RTAX_MAX; i++) 1732 if (rtm->rtm_addrs & (1 << i)) { 1733 sp[i] = (struct sockaddr *)cp; 1734 cp += SA_SIZE((struct sockaddr *)cp); 1735 } 1736 if ((rtm->rtm_addrs & RTA_IFP) && 1737 (sp[RTAX_IFP]->sa_family != AF_LINK || 1738 ((struct sockaddr_dl *)(void *)sp[RTAX_IFP])->sdl_nlen == 0)) 1739 sp[RTAX_IFP] = NULL; 1740 if (sp[RTAX_DST] && sp[RTAX_NETMASK]) 1741 sp[RTAX_NETMASK]->sa_family = sp[RTAX_DST]->sa_family; /* XXX */ 1742 if (sp[RTAX_DST]) 1743 (void)printf("destination: %s\n", routename(sp[RTAX_DST])); 1744 if (sp[RTAX_NETMASK]) 1745 (void)printf(" mask: %s\n", routename(sp[RTAX_NETMASK])); 1746 if (sp[RTAX_GATEWAY] && (rtm->rtm_flags & RTF_GATEWAY)) 1747 (void)printf(" gateway: %s\n", routename(sp[RTAX_GATEWAY])); 1748 if (fib >= 0) 1749 (void)printf(" fib: %u\n", (unsigned int)fib); 1750 if (sp[RTAX_IFP]) 1751 (void)printf(" interface: %.*s\n", 1752 ((struct sockaddr_dl *)(void *)sp[RTAX_IFP])->sdl_nlen, 1753 ((struct sockaddr_dl *)(void *)sp[RTAX_IFP])->sdl_data); 1754 (void)printf(" flags: "); 1755 printb(rtm->rtm_flags, routeflags); 1756 1757 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1758 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1759 printf("\n%9s %9s %9s %9s %9s %10s %9s\n", "recvpipe", 1760 "sendpipe", "ssthresh", "rtt,msec", "mtu ", "weight", "expire"); 1761 printf("%8lu%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1762 printf("%8lu%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1763 printf("%8lu%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1764 printf("%8lu%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1765 printf("%8lu%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1766 printf("%8lu%c ", rtm->rtm_rmx.rmx_weight, lock(WEIGHT)); 1767 if (rtm->rtm_rmx.rmx_expire > 0) 1768 clock_gettime(CLOCK_REALTIME_FAST, &ts); 1769 else 1770 ts.tv_sec = 0; 1771 printf("%8ld%c\n", (long)(rtm->rtm_rmx.rmx_expire - ts.tv_sec), 1772 lock(EXPIRE)); 1773 #undef lock 1774 #undef msec 1775 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1776 if (verbose) 1777 pmsg_common(rtm, msglen); 1778 else if (rtm->rtm_addrs &~ RTA_IGN) { 1779 (void)printf("sockaddrs: "); 1780 printb(rtm->rtm_addrs, addrnames); 1781 putchar('\n'); 1782 } 1783 #undef RTA_IGN 1784 } 1785 1786 static void 1787 pmsg_common(struct rt_msghdr *rtm, size_t msglen) 1788 { 1789 1790 (void)printf("\nlocks: "); 1791 printb(rtm->rtm_rmx.rmx_locks, metricnames); 1792 (void)printf(" inits: "); 1793 printb(rtm->rtm_inits, metricnames); 1794 if (msglen > sizeof(struct rt_msghdr)) 1795 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs, 1796 msglen - sizeof(struct rt_msghdr)); 1797 else 1798 (void)fflush(stdout); 1799 } 1800 1801 static void 1802 pmsg_addrs(char *cp, int addrs, size_t len) 1803 { 1804 struct sockaddr *sa; 1805 int i; 1806 1807 if (addrs == 0) { 1808 (void)putchar('\n'); 1809 return; 1810 } 1811 (void)printf("\nsockaddrs: "); 1812 printb(addrs, addrnames); 1813 putchar('\n'); 1814 for (i = 0; i < RTAX_MAX; i++) 1815 if (addrs & (1 << i)) { 1816 sa = (struct sockaddr *)cp; 1817 if (len == 0 || len < SA_SIZE(sa)) { 1818 (void)printf(errfmt, __func__, len); 1819 break; 1820 } 1821 (void)printf(" %s", routename(sa)); 1822 len -= SA_SIZE(sa); 1823 cp += SA_SIZE(sa); 1824 } 1825 (void)putchar('\n'); 1826 (void)fflush(stdout); 1827 } 1828 1829 static void 1830 printb(int b, const char *str) 1831 { 1832 int i; 1833 int gotsome = 0; 1834 1835 if (b == 0) 1836 return; 1837 while ((i = *str++) != 0) { 1838 if (b & (1 << (i-1))) { 1839 if (gotsome == 0) 1840 i = '<'; 1841 else 1842 i = ','; 1843 putchar(i); 1844 gotsome = 1; 1845 for (; (i = *str) > 32; str++) 1846 putchar(i); 1847 } else 1848 while (*str > 32) 1849 str++; 1850 } 1851 if (gotsome) 1852 putchar('>'); 1853 } 1854 1855 int 1856 keyword(const char *cp) 1857 { 1858 const struct keytab *kt = keywords; 1859 1860 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0) 1861 kt++; 1862 return (kt->kt_i); 1863 } 1864 1865 static void 1866 sodump(struct sockaddr *sa, const char *which) 1867 { 1868 char atalk_buf[ATALK_BUF_SIZE]; 1869 #ifdef INET6 1870 char nbuf[INET6_ADDRSTRLEN]; 1871 #endif 1872 1873 switch (sa->sa_family) { 1874 case AF_LINK: 1875 (void)printf("%s: link %s; ", which, 1876 link_ntoa((struct sockaddr_dl *)(void *)sa)); 1877 break; 1878 #ifdef INET 1879 case AF_INET: 1880 (void)printf("%s: inet %s; ", which, 1881 inet_ntoa(((struct sockaddr_in *)(void *)sa)->sin_addr)); 1882 break; 1883 #endif 1884 #ifdef INET6 1885 case AF_INET6: 1886 (void)printf("%s: inet6 %s; ", which, inet_ntop(sa->sa_family, 1887 &((struct sockaddr_in6 *)(void *)sa)->sin6_addr, nbuf, 1888 sizeof(nbuf))); 1889 break; 1890 #endif 1891 case AF_APPLETALK: 1892 (void)printf("%s: atalk %s; ", which, 1893 atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr, 1894 atalk_buf)); 1895 break; 1896 } 1897 (void)fflush(stdout); 1898 } 1899 1900 /* States*/ 1901 #define VIRGIN 0 1902 #define GOTONE 1 1903 #define GOTTWO 2 1904 /* Inputs */ 1905 #define DIGIT (4*0) 1906 #define END (4*1) 1907 #define DELIM (4*2) 1908 1909 static void 1910 sockaddr(char *addr, struct sockaddr *sa, size_t size) 1911 { 1912 char *cp = (char *)sa; 1913 char *cplim = cp + size; 1914 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1915 1916 memset(cp, 0, size); 1917 cp++; 1918 do { 1919 if ((*addr >= '0') && (*addr <= '9')) { 1920 new = *addr - '0'; 1921 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1922 new = *addr - 'a' + 10; 1923 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1924 new = *addr - 'A' + 10; 1925 } else if (*addr == '\0') 1926 state |= END; 1927 else 1928 state |= DELIM; 1929 addr++; 1930 switch (state /* | INPUT */) { 1931 case GOTTWO | DIGIT: 1932 *cp++ = byte; /*FALLTHROUGH*/ 1933 case VIRGIN | DIGIT: 1934 state = GOTONE; byte = new; continue; 1935 case GOTONE | DIGIT: 1936 state = GOTTWO; byte = new + (byte << 4); continue; 1937 default: /* | DELIM */ 1938 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1939 case GOTONE | END: 1940 case GOTTWO | END: 1941 *cp++ = byte; /* FALLTHROUGH */ 1942 case VIRGIN | END: 1943 break; 1944 } 1945 break; 1946 } while (cp < cplim); 1947 sa->sa_len = cp - (char *)sa; 1948 } 1949 1950 static int 1951 atalk_aton(const char *text, struct at_addr *addr) 1952 { 1953 u_int net, node; 1954 1955 if (sscanf(text, "%u.%u", &net, &node) != 2 1956 || net > 0xffff || node > 0xff) 1957 return(0); 1958 addr->s_net = htons(net); 1959 addr->s_node = node; 1960 return(1); 1961 } 1962 1963 static char * 1964 atalk_ntoa(struct at_addr at, char buf[ATALK_BUF_SIZE]) 1965 { 1966 (void)snprintf(buf, ATALK_BUF_SIZE, "%u.%u", ntohs(at.s_net), at.s_node); 1967 buf[ATALK_BUF_SIZE - 1] = '\0'; 1968 return(buf); 1969 } 1970