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 /* Do some sanity checks on resulting request */ 962 if (so[RTAX_DST].ss_len == 0) { 963 warnx("destination parameter required"); 964 usage(NULL); 965 } 966 967 if (so[RTAX_NETMASK].ss_len != 0 && 968 so[RTAX_DST].ss_family != so[RTAX_NETMASK].ss_family) { 969 warnx("destination and netmask family need to be the same"); 970 usage(NULL); 971 } 972 973 if (nrflags & F_FORCEHOST) { 974 nrflags |= F_ISHOST; 975 #ifdef INET6 976 if (af == AF_INET6) { 977 rtm_addrs &= ~RTA_NETMASK; 978 memset(&so[RTAX_NETMASK], 0, sizeof(so[RTAX_NETMASK])); 979 } 980 #endif 981 } 982 if (nrflags & F_FORCENET) 983 nrflags &= ~F_ISHOST; 984 flags |= RTF_UP; 985 if (nrflags & F_ISHOST) 986 flags |= RTF_HOST; 987 if ((nrflags & F_INTERFACE) == 0) 988 flags |= RTF_GATEWAY; 989 if (nrflags & F_PROXY) 990 flags |= RTF_ANNOUNCE; 991 if (dest == NULL) 992 dest = ""; 993 if (gateway == NULL) 994 gateway = ""; 995 996 if (TAILQ_EMPTY(&fibl_head)) { 997 error = fiboptlist_csv("default", &fibl_head); 998 if (error) 999 errx(EX_OSERR, "fiboptlist_csv failed."); 1000 } 1001 error = 0; 1002 TAILQ_FOREACH(fl, &fibl_head, fl_next) { 1003 fl->fl_error = newroute_fib(fl->fl_num, cmd, flags); 1004 if (fl->fl_error) 1005 fl->fl_errno = errno; 1006 error += fl->fl_error; 1007 } 1008 if (*cmd == 'g' || *cmd == 's') 1009 exit(error); 1010 1011 error = 0; 1012 if (!qflag) { 1013 fibnum = 0; 1014 TAILQ_FOREACH(fl, &fibl_head, fl_next) { 1015 if (fl->fl_error == 0) 1016 fibnum++; 1017 } 1018 if (fibnum > 0) { 1019 int firstfib = 1; 1020 1021 printf("%s %s %s", cmd, 1022 (nrflags & F_ISHOST) ? "host" : "net", dest); 1023 if (*gateway) 1024 printf(": gateway %s", gateway); 1025 1026 if (numfibs > 1) { 1027 TAILQ_FOREACH(fl, &fibl_head, fl_next) { 1028 if (fl->fl_error == 0 1029 && fl->fl_num >= 0) { 1030 if (firstfib) { 1031 printf(" fib "); 1032 firstfib = 0; 1033 } 1034 printf("%d", fl->fl_num); 1035 if (fibnum-- > 1) 1036 printf(","); 1037 } 1038 } 1039 } 1040 printf("\n"); 1041 } 1042 1043 fibnum = 0; 1044 TAILQ_FOREACH(fl, &fibl_head, fl_next) { 1045 if (fl->fl_error != 0) { 1046 printf("%s %s %s", cmd, (nrflags & F_ISHOST) 1047 ? "host" : "net", dest); 1048 if (*gateway) 1049 printf(": gateway %s", gateway); 1050 1051 if (fl->fl_num >= 0) 1052 printf(" fib %d", fl->fl_num); 1053 1054 switch (fl->fl_errno) { 1055 case ESRCH: 1056 errmsg = "not in table"; 1057 break; 1058 case EBUSY: 1059 errmsg = "entry in use"; 1060 break; 1061 case ENOBUFS: 1062 errmsg = "not enough memory"; 1063 break; 1064 case EADDRINUSE: 1065 /* 1066 * handle recursion avoidance 1067 * in rt_setgate() 1068 */ 1069 errmsg = "gateway uses the same route"; 1070 break; 1071 case EEXIST: 1072 errmsg = "route already in table"; 1073 break; 1074 default: 1075 errmsg = strerror(fl->fl_errno); 1076 break; 1077 } 1078 printf(": %s\n", errmsg); 1079 error = 1; 1080 } 1081 } 1082 } 1083 exit(error); 1084 } 1085 1086 static int 1087 newroute_fib(int fib, char *cmd, int flags) 1088 { 1089 int error; 1090 1091 error = set_sofib(fib); 1092 if (error) { 1093 warn("fib number %d is ignored", fib); 1094 return (error); 1095 } 1096 1097 error = rtmsg(*cmd, flags, fib); 1098 return (error); 1099 } 1100 1101 #ifdef INET 1102 static void 1103 inet_makenetandmask(u_long net, struct sockaddr_in *sin, 1104 struct sockaddr_in *sin_mask, u_long bits) 1105 { 1106 u_long mask = 0; 1107 1108 rtm_addrs |= RTA_NETMASK; 1109 1110 /* 1111 * MSB of net should be meaningful. 0/0 is exception. 1112 */ 1113 if (net > 0) 1114 while ((net & 0xff000000) == 0) 1115 net <<= 8; 1116 1117 /* 1118 * If no /xx was specified we must calculate the 1119 * CIDR address. 1120 */ 1121 if ((bits == 0) && (net != 0)) { 1122 u_long i, j; 1123 1124 for(i = 0, j = 0xff; i < 4; i++) { 1125 if (net & j) { 1126 break; 1127 } 1128 j <<= 8; 1129 } 1130 /* i holds the first non zero bit */ 1131 bits = 32 - (i*8); 1132 } 1133 if (bits != 0) 1134 mask = 0xffffffff << (32 - bits); 1135 1136 sin->sin_addr.s_addr = htonl(net); 1137 sin_mask->sin_addr.s_addr = htonl(mask); 1138 sin_mask->sin_len = sizeof(struct sockaddr_in); 1139 sin_mask->sin_family = AF_INET; 1140 } 1141 #endif 1142 1143 #ifdef INET6 1144 /* 1145 * XXX the function may need more improvement... 1146 */ 1147 static int 1148 inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen) 1149 { 1150 struct in6_addr in6; 1151 1152 if (plen == NULL) { 1153 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 1154 sin6->sin6_scope_id == 0) { 1155 plen = "0"; 1156 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 1157 /* aggregatable global unicast - RFC2374 */ 1158 memset(&in6, 0, sizeof(in6)); 1159 if (!memcmp(&sin6->sin6_addr.s6_addr[8], 1160 &in6.s6_addr[8], 8)) 1161 plen = "64"; 1162 } 1163 } 1164 1165 if (plen == NULL || strcmp(plen, "128") == 0) 1166 return (1); 1167 rtm_addrs |= RTA_NETMASK; 1168 prefixlen(plen); 1169 return (0); 1170 } 1171 #endif 1172 1173 /* 1174 * Interpret an argument as a network address of some kind, 1175 * returning 1 if a host address, 0 if a network address. 1176 */ 1177 static int 1178 getaddr(int idx, char *str, struct hostent **hpp, int nrflags) 1179 { 1180 struct sockaddr *sa; 1181 #if defined(INET) 1182 struct sockaddr_in *sin; 1183 struct hostent *hp; 1184 struct netent *np; 1185 u_long val; 1186 char *q; 1187 #elif defined(INET6) 1188 char *q; 1189 #endif 1190 1191 if (idx < 0 || idx >= RTAX_MAX) 1192 usage("internal error"); 1193 if (af == 0) { 1194 #if defined(INET) 1195 af = AF_INET; 1196 aflen = sizeof(struct sockaddr_in); 1197 #elif defined(INET6) 1198 af = AF_INET6; 1199 aflen = sizeof(struct sockaddr_in6); 1200 #else 1201 af = AF_LINK; 1202 aflen = sizeof(struct sockaddr_dl); 1203 #endif 1204 } 1205 #ifndef INET 1206 hpp = NULL; 1207 #endif 1208 rtm_addrs |= (1 << idx); 1209 sa = (struct sockaddr *)&so[idx]; 1210 sa->sa_family = af; 1211 sa->sa_len = aflen; 1212 1213 switch (idx) { 1214 case RTAX_GATEWAY: 1215 if (nrflags & F_INTERFACE) { 1216 struct ifaddrs *ifap, *ifa; 1217 struct sockaddr_dl *sdl0 = (struct sockaddr_dl *)(void *)sa; 1218 struct sockaddr_dl *sdl = NULL; 1219 1220 if (getifaddrs(&ifap)) 1221 err(EX_OSERR, "getifaddrs"); 1222 1223 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) { 1224 if (ifa->ifa_addr->sa_family != AF_LINK) 1225 continue; 1226 1227 if (strcmp(str, ifa->ifa_name) != 0) 1228 continue; 1229 1230 sdl = (struct sockaddr_dl *)(void *)ifa->ifa_addr; 1231 } 1232 /* If we found it, then use it */ 1233 if (sdl != NULL) { 1234 /* 1235 * Note that we need to copy before calling 1236 * freeifaddrs(). 1237 */ 1238 memcpy(sdl0, sdl, sdl->sdl_len); 1239 } 1240 freeifaddrs(ifap); 1241 if (sdl != NULL) 1242 return(1); 1243 } 1244 break; 1245 case RTAX_IFP: 1246 sa->sa_family = AF_LINK; 1247 break; 1248 } 1249 if (strcmp(str, "default") == 0) { 1250 /* 1251 * Default is net 0.0.0.0/0 1252 */ 1253 switch (idx) { 1254 case RTAX_DST: 1255 forcenet++; 1256 getaddr(RTAX_NETMASK, str, 0, nrflags); 1257 break; 1258 } 1259 return (0); 1260 } 1261 switch (sa->sa_family) { 1262 #ifdef INET6 1263 case AF_INET6: 1264 { 1265 struct addrinfo hints, *res; 1266 int ecode; 1267 1268 q = NULL; 1269 if (idx == RTAX_DST && (q = strchr(str, '/')) != NULL) 1270 *q = '\0'; 1271 memset(&hints, 0, sizeof(hints)); 1272 hints.ai_family = sa->sa_family; 1273 hints.ai_socktype = SOCK_DGRAM; 1274 ecode = getaddrinfo(str, NULL, &hints, &res); 1275 if (ecode != 0 || res->ai_family != AF_INET6 || 1276 res->ai_addrlen != sizeof(struct sockaddr_in6)) 1277 errx(EX_OSERR, "%s: %s", str, gai_strerror(ecode)); 1278 memcpy(sa, res->ai_addr, res->ai_addrlen); 1279 freeaddrinfo(res); 1280 if (q != NULL) 1281 *q++ = '/'; 1282 if (idx == RTAX_DST) 1283 return (inet6_makenetandmask((struct sockaddr_in6 *)(void *)sa, q)); 1284 return (0); 1285 } 1286 #endif /* INET6 */ 1287 1288 case AF_APPLETALK: 1289 { 1290 struct sockaddr_at *sat = (struct sockaddr_at *)(void *)sa; 1291 1292 if (!atalk_aton(str, &sat->sat_addr)) 1293 errx(EX_NOHOST, "bad address: %s", str); 1294 rtm_addrs |= RTA_NETMASK; 1295 return(forcehost || sat->sat_addr.s_node != 0); 1296 } 1297 case AF_LINK: 1298 link_addr(str, (struct sockaddr_dl *)(void *)sa); 1299 return (1); 1300 1301 case PF_ROUTE: 1302 sockaddr(str, sa, sizeof(struct sockaddr_storage)); 1303 return (1); 1304 #ifdef INET 1305 case AF_INET: 1306 #endif 1307 default: 1308 break; 1309 } 1310 1311 #ifdef INET 1312 sin = (struct sockaddr_in *)(void *)sa; 1313 if (hpp == NULL) 1314 hpp = &hp; 1315 *hpp = NULL; 1316 1317 q = strchr(str,'/'); 1318 if (q != NULL && idx == RTAX_DST) { 1319 *q = '\0'; 1320 if ((val = inet_network(str)) != INADDR_NONE) { 1321 inet_makenetandmask(val, sin, 1322 (struct sockaddr_in *)&so[RTAX_NETMASK], 1323 strtoul(q+1, 0, 0)); 1324 return (0); 1325 } 1326 *q = '/'; 1327 } 1328 if ((idx != RTAX_DST || forcenet == 0) && 1329 inet_aton(str, &sin->sin_addr)) { 1330 val = sin->sin_addr.s_addr; 1331 if (idx != RTAX_DST || forcehost || 1332 inet_lnaof(sin->sin_addr) != INADDR_ANY) 1333 return (1); 1334 else { 1335 val = ntohl(val); 1336 goto netdone; 1337 } 1338 } 1339 if (idx == RTAX_DST && forcehost == 0 && 1340 ((val = inet_network(str)) != INADDR_NONE || 1341 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) { 1342 netdone: 1343 inet_makenetandmask(val, sin, 1344 (struct sockaddr_in *)&so[RTAX_NETMASK], 0); 1345 return (0); 1346 } 1347 hp = gethostbyname(str); 1348 if (hp != NULL) { 1349 *hpp = hp; 1350 sin->sin_family = hp->h_addrtype; 1351 memmove((char *)&sin->sin_addr, hp->h_addr, 1352 MIN((size_t)hp->h_length, sizeof(sin->sin_addr))); 1353 return (1); 1354 } 1355 #endif 1356 errx(EX_NOHOST, "bad address: %s", str); 1357 } 1358 1359 static int 1360 prefixlen(const char *str) 1361 { 1362 int len = atoi(str), q, r; 1363 int max; 1364 char *p; 1365 1366 rtm_addrs |= RTA_NETMASK; 1367 switch (af) { 1368 #ifdef INET6 1369 case AF_INET6: 1370 { 1371 struct sockaddr_in6 *sin6 = 1372 (struct sockaddr_in6 *)&so[RTAX_NETMASK]; 1373 1374 max = 128; 1375 p = (char *)&sin6->sin6_addr; 1376 sin6->sin6_family = AF_INET6; 1377 sin6->sin6_len = sizeof(*sin6); 1378 break; 1379 } 1380 #endif 1381 #ifdef INET 1382 case AF_INET: 1383 { 1384 struct sockaddr_in *sin = 1385 (struct sockaddr_in *)&so[RTAX_NETMASK]; 1386 1387 max = 32; 1388 p = (char *)&sin->sin_addr; 1389 sin->sin_family = AF_INET; 1390 sin->sin_len = sizeof(*sin); 1391 break; 1392 } 1393 #endif 1394 default: 1395 errx(EX_OSERR, "prefixlen not supported in this af"); 1396 } 1397 1398 if (len < 0 || max < len) 1399 errx(EX_USAGE, "%s: invalid prefixlen", str); 1400 1401 q = len >> 3; 1402 r = len & 7; 1403 memset((void *)p, 0, max / 8); 1404 if (q > 0) 1405 memset((void *)p, 0xff, q); 1406 if (r > 0) 1407 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1408 if (len == max) 1409 return (-1); 1410 else 1411 return (len); 1412 } 1413 1414 static void 1415 interfaces(void) 1416 { 1417 size_t needed; 1418 int mib[6]; 1419 char *buf, *lim, *next, count = 0; 1420 struct rt_msghdr *rtm; 1421 1422 retry2: 1423 mib[0] = CTL_NET; 1424 mib[1] = PF_ROUTE; 1425 mib[2] = 0; /* protocol */ 1426 mib[3] = AF_UNSPEC; 1427 mib[4] = NET_RT_IFLIST; 1428 mib[5] = 0; /* no flags */ 1429 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0) 1430 err(EX_OSERR, "route-sysctl-estimate"); 1431 if ((buf = malloc(needed)) == NULL) 1432 errx(EX_OSERR, "malloc failed"); 1433 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) { 1434 if (errno == ENOMEM && count++ < 10) { 1435 warnx("Routing table grew, retrying"); 1436 sleep(1); 1437 free(buf); 1438 goto retry2; 1439 } 1440 err(EX_OSERR, "actual retrieval of interface table"); 1441 } 1442 lim = buf + needed; 1443 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1444 rtm = (struct rt_msghdr *)(void *)next; 1445 print_rtmsg(rtm, rtm->rtm_msglen); 1446 } 1447 } 1448 1449 static void 1450 monitor(int argc, char *argv[]) 1451 { 1452 int n, fib, error; 1453 char msg[2048], *endptr; 1454 1455 fib = defaultfib; 1456 while (argc > 1) { 1457 argc--; 1458 argv++; 1459 if (**argv != '-') 1460 usage(*argv); 1461 switch (keyword(*argv + 1)) { 1462 case K_FIB: 1463 if (!--argc) 1464 usage(*argv); 1465 errno = 0; 1466 fib = strtol(*++argv, &endptr, 0); 1467 if (errno == 0) { 1468 if (*endptr != '\0' || 1469 fib < 0 || 1470 (numfibs != -1 && fib > numfibs - 1)) 1471 errno = EINVAL; 1472 } 1473 if (errno) 1474 errx(EX_USAGE, "invalid fib number: %s", *argv); 1475 break; 1476 default: 1477 usage(*argv); 1478 } 1479 } 1480 error = set_sofib(fib); 1481 if (error) 1482 errx(EX_USAGE, "invalid fib number: %d", fib); 1483 1484 verbose = 1; 1485 if (debugonly) { 1486 interfaces(); 1487 exit(0); 1488 } 1489 for (;;) { 1490 time_t now; 1491 n = read(s, msg, 2048); 1492 now = time(NULL); 1493 (void)printf("\ngot message of size %d on %s", n, ctime(&now)); 1494 print_rtmsg((struct rt_msghdr *)(void *)msg, n); 1495 } 1496 } 1497 1498 static int 1499 rtmsg(int cmd, int flags, int fib) 1500 { 1501 int rlen; 1502 char *cp = m_rtmsg.m_space; 1503 int l; 1504 1505 #define NEXTADDR(w, u) \ 1506 if (rtm_addrs & (w)) { \ 1507 l = (((struct sockaddr *)&(u))->sa_len == 0) ? \ 1508 sizeof(long) : \ 1509 1 + ((((struct sockaddr *)&(u))->sa_len - 1) \ 1510 | (sizeof(long) - 1)); \ 1511 memmove(cp, (char *)&(u), l); \ 1512 cp += l; \ 1513 if (verbose) \ 1514 sodump((struct sockaddr *)&(u), #w); \ 1515 } 1516 1517 errno = 0; 1518 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1519 if (cmd == 'a') 1520 cmd = RTM_ADD; 1521 else if (cmd == 'c') 1522 cmd = RTM_CHANGE; 1523 else if (cmd == 'g' || cmd == 's') { 1524 cmd = RTM_GET; 1525 if (so[RTAX_IFP].ss_family == 0) { 1526 so[RTAX_IFP].ss_family = AF_LINK; 1527 so[RTAX_IFP].ss_len = sizeof(struct sockaddr_dl); 1528 rtm_addrs |= RTA_IFP; 1529 } 1530 } else 1531 cmd = RTM_DELETE; 1532 #define rtm m_rtmsg.m_rtm 1533 rtm.rtm_type = cmd; 1534 rtm.rtm_flags = flags; 1535 rtm.rtm_version = RTM_VERSION; 1536 rtm.rtm_seq = ++rtm_seq; 1537 rtm.rtm_addrs = rtm_addrs; 1538 rtm.rtm_rmx = rt_metrics; 1539 rtm.rtm_inits = rtm_inits; 1540 1541 NEXTADDR(RTA_DST, so[RTAX_DST]); 1542 NEXTADDR(RTA_GATEWAY, so[RTAX_GATEWAY]); 1543 NEXTADDR(RTA_NETMASK, so[RTAX_NETMASK]); 1544 NEXTADDR(RTA_GENMASK, so[RTAX_GENMASK]); 1545 NEXTADDR(RTA_IFP, so[RTAX_IFP]); 1546 NEXTADDR(RTA_IFA, so[RTAX_IFA]); 1547 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1548 if (verbose) 1549 print_rtmsg(&rtm, l); 1550 if (debugonly) 1551 return (0); 1552 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1553 if (errno == EPERM) 1554 err(1, "writing to routing socket"); 1555 warn("writing to routing socket"); 1556 return (-1); 1557 } 1558 if (cmd == RTM_GET) { 1559 do { 1560 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1561 } while (l > 0 && (rtm.rtm_seq != rtm_seq || rtm.rtm_pid != pid)); 1562 if (l < 0) 1563 warn("read from routing socket"); 1564 else 1565 print_getmsg(&rtm, l, fib); 1566 } 1567 #undef rtm 1568 return (0); 1569 } 1570 1571 static const char *const msgtypes[] = { 1572 "", 1573 "RTM_ADD: Add Route", 1574 "RTM_DELETE: Delete Route", 1575 "RTM_CHANGE: Change Metrics or flags", 1576 "RTM_GET: Report Metrics", 1577 "RTM_LOSING: Kernel Suspects Partitioning", 1578 "RTM_REDIRECT: Told to use different route", 1579 "RTM_MISS: Lookup failed on this address", 1580 "RTM_LOCK: fix specified metrics", 1581 "RTM_OLDADD: caused by SIOCADDRT", 1582 "RTM_OLDDEL: caused by SIOCDELRT", 1583 "RTM_RESOLVE: Route created by cloning", 1584 "RTM_NEWADDR: address being added to iface", 1585 "RTM_DELADDR: address being removed from iface", 1586 "RTM_IFINFO: iface status change", 1587 "RTM_NEWMADDR: new multicast group membership on iface", 1588 "RTM_DELMADDR: multicast group membership removed from iface", 1589 "RTM_IFANNOUNCE: interface arrival/departure", 1590 "RTM_IEEE80211: IEEE 802.11 wireless event", 1591 }; 1592 1593 static const char metricnames[] = 1594 "\011weight\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire" 1595 "\1mtu"; 1596 static const char routeflags[] = 1597 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE" 1598 "\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE" 1599 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3" 1600 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\035STICKY"; 1601 static const char ifnetflags[] = 1602 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1603 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1604 "\017LINK2\020MULTICAST"; 1605 static const char addrnames[] = 1606 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1607 1608 static const char errfmt[] = 1609 "\n%s: truncated route message, only %zu bytes left\n"; 1610 1611 static void 1612 print_rtmsg(struct rt_msghdr *rtm, size_t msglen) 1613 { 1614 struct if_msghdr *ifm; 1615 struct ifa_msghdr *ifam; 1616 #ifdef RTM_NEWMADDR 1617 struct ifma_msghdr *ifmam; 1618 #endif 1619 struct if_announcemsghdr *ifan; 1620 const char *state; 1621 1622 if (verbose == 0) 1623 return; 1624 if (rtm->rtm_version != RTM_VERSION) { 1625 (void)printf("routing message version %d not understood\n", 1626 rtm->rtm_version); 1627 return; 1628 } 1629 if (rtm->rtm_type < nitems(msgtypes)) 1630 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1631 else 1632 (void)printf("unknown type %d: ", rtm->rtm_type); 1633 (void)printf("len %d, ", rtm->rtm_msglen); 1634 1635 #define REQUIRE(x) do { \ 1636 if (msglen < sizeof(x)) \ 1637 goto badlen; \ 1638 else \ 1639 msglen -= sizeof(x); \ 1640 } while (0) 1641 1642 switch (rtm->rtm_type) { 1643 case RTM_IFINFO: 1644 REQUIRE(struct if_msghdr); 1645 ifm = (struct if_msghdr *)rtm; 1646 (void)printf("if# %d, ", ifm->ifm_index); 1647 switch (ifm->ifm_data.ifi_link_state) { 1648 case LINK_STATE_DOWN: 1649 state = "down"; 1650 break; 1651 case LINK_STATE_UP: 1652 state = "up"; 1653 break; 1654 default: 1655 state = "unknown"; 1656 break; 1657 } 1658 (void)printf("link: %s, flags:", state); 1659 printb(ifm->ifm_flags, ifnetflags); 1660 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs, msglen); 1661 break; 1662 case RTM_NEWADDR: 1663 case RTM_DELADDR: 1664 REQUIRE(struct ifa_msghdr); 1665 ifam = (struct ifa_msghdr *)rtm; 1666 (void)printf("metric %d, flags:", ifam->ifam_metric); 1667 printb(ifam->ifam_flags, routeflags); 1668 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs, msglen); 1669 break; 1670 #ifdef RTM_NEWMADDR 1671 case RTM_NEWMADDR: 1672 case RTM_DELMADDR: 1673 REQUIRE(struct ifma_msghdr); 1674 ifmam = (struct ifma_msghdr *)rtm; 1675 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs, msglen); 1676 break; 1677 #endif 1678 case RTM_IFANNOUNCE: 1679 REQUIRE(struct if_announcemsghdr); 1680 ifan = (struct if_announcemsghdr *)rtm; 1681 (void)printf("if# %d, what: ", ifan->ifan_index); 1682 switch (ifan->ifan_what) { 1683 case IFAN_ARRIVAL: 1684 (void)printf("arrival"); 1685 break; 1686 case IFAN_DEPARTURE: 1687 printf("departure"); 1688 break; 1689 default: 1690 printf("#%d", ifan->ifan_what); 1691 break; 1692 } 1693 printf("\n"); 1694 fflush(stdout); 1695 break; 1696 1697 default: 1698 printf("pid: %ld, seq %d, errno %d, flags:", 1699 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1700 printb(rtm->rtm_flags, routeflags); 1701 pmsg_common(rtm, msglen); 1702 } 1703 1704 return; 1705 1706 badlen: 1707 (void)printf(errfmt, __func__, msglen); 1708 #undef REQUIRE 1709 } 1710 1711 static void 1712 print_getmsg(struct rt_msghdr *rtm, int msglen, int fib) 1713 { 1714 struct sockaddr *sp[RTAX_MAX]; 1715 struct timespec ts; 1716 char *cp; 1717 int i; 1718 1719 memset(sp, 0, sizeof(sp)); 1720 (void)printf(" route to: %s\n", 1721 routename((struct sockaddr *)&so[RTAX_DST])); 1722 if (rtm->rtm_version != RTM_VERSION) { 1723 warnx("routing message version %d not understood", 1724 rtm->rtm_version); 1725 return; 1726 } 1727 if (rtm->rtm_msglen > msglen) { 1728 warnx("message length mismatch, in packet %d, returned %d", 1729 rtm->rtm_msglen, msglen); 1730 return; 1731 } 1732 if (rtm->rtm_errno) { 1733 errno = rtm->rtm_errno; 1734 warn("message indicates error %d", errno); 1735 return; 1736 } 1737 cp = ((char *)(rtm + 1)); 1738 for (i = 0; i < RTAX_MAX; i++) 1739 if (rtm->rtm_addrs & (1 << i)) { 1740 sp[i] = (struct sockaddr *)cp; 1741 cp += SA_SIZE((struct sockaddr *)cp); 1742 } 1743 if ((rtm->rtm_addrs & RTA_IFP) && 1744 (sp[RTAX_IFP]->sa_family != AF_LINK || 1745 ((struct sockaddr_dl *)(void *)sp[RTAX_IFP])->sdl_nlen == 0)) 1746 sp[RTAX_IFP] = NULL; 1747 if (sp[RTAX_DST] && sp[RTAX_NETMASK]) 1748 sp[RTAX_NETMASK]->sa_family = sp[RTAX_DST]->sa_family; /* XXX */ 1749 if (sp[RTAX_DST]) 1750 (void)printf("destination: %s\n", routename(sp[RTAX_DST])); 1751 if (sp[RTAX_NETMASK]) 1752 (void)printf(" mask: %s\n", routename(sp[RTAX_NETMASK])); 1753 if (sp[RTAX_GATEWAY] && (rtm->rtm_flags & RTF_GATEWAY)) 1754 (void)printf(" gateway: %s\n", routename(sp[RTAX_GATEWAY])); 1755 if (fib >= 0) 1756 (void)printf(" fib: %u\n", (unsigned int)fib); 1757 if (sp[RTAX_IFP]) 1758 (void)printf(" interface: %.*s\n", 1759 ((struct sockaddr_dl *)(void *)sp[RTAX_IFP])->sdl_nlen, 1760 ((struct sockaddr_dl *)(void *)sp[RTAX_IFP])->sdl_data); 1761 (void)printf(" flags: "); 1762 printb(rtm->rtm_flags, routeflags); 1763 1764 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1765 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1766 printf("\n%9s %9s %9s %9s %9s %10s %9s\n", "recvpipe", 1767 "sendpipe", "ssthresh", "rtt,msec", "mtu ", "weight", "expire"); 1768 printf("%8lu%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1769 printf("%8lu%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1770 printf("%8lu%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1771 printf("%8lu%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1772 printf("%8lu%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1773 printf("%8lu%c ", rtm->rtm_rmx.rmx_weight, lock(WEIGHT)); 1774 if (rtm->rtm_rmx.rmx_expire > 0) 1775 clock_gettime(CLOCK_REALTIME_FAST, &ts); 1776 else 1777 ts.tv_sec = 0; 1778 printf("%8ld%c\n", (long)(rtm->rtm_rmx.rmx_expire - ts.tv_sec), 1779 lock(EXPIRE)); 1780 #undef lock 1781 #undef msec 1782 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1783 if (verbose) 1784 pmsg_common(rtm, msglen); 1785 else if (rtm->rtm_addrs &~ RTA_IGN) { 1786 (void)printf("sockaddrs: "); 1787 printb(rtm->rtm_addrs, addrnames); 1788 putchar('\n'); 1789 } 1790 #undef RTA_IGN 1791 } 1792 1793 static void 1794 pmsg_common(struct rt_msghdr *rtm, size_t msglen) 1795 { 1796 1797 (void)printf("\nlocks: "); 1798 printb(rtm->rtm_rmx.rmx_locks, metricnames); 1799 (void)printf(" inits: "); 1800 printb(rtm->rtm_inits, metricnames); 1801 if (msglen > sizeof(struct rt_msghdr)) 1802 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs, 1803 msglen - sizeof(struct rt_msghdr)); 1804 else 1805 (void)fflush(stdout); 1806 } 1807 1808 static void 1809 pmsg_addrs(char *cp, int addrs, size_t len) 1810 { 1811 struct sockaddr *sa; 1812 int i; 1813 1814 if (addrs == 0) { 1815 (void)putchar('\n'); 1816 return; 1817 } 1818 (void)printf("\nsockaddrs: "); 1819 printb(addrs, addrnames); 1820 putchar('\n'); 1821 for (i = 0; i < RTAX_MAX; i++) 1822 if (addrs & (1 << i)) { 1823 sa = (struct sockaddr *)cp; 1824 if (len == 0 || len < SA_SIZE(sa)) { 1825 (void)printf(errfmt, __func__, len); 1826 break; 1827 } 1828 (void)printf(" %s", routename(sa)); 1829 len -= SA_SIZE(sa); 1830 cp += SA_SIZE(sa); 1831 } 1832 (void)putchar('\n'); 1833 (void)fflush(stdout); 1834 } 1835 1836 static void 1837 printb(int b, const char *str) 1838 { 1839 int i; 1840 int gotsome = 0; 1841 1842 if (b == 0) 1843 return; 1844 while ((i = *str++) != 0) { 1845 if (b & (1 << (i-1))) { 1846 if (gotsome == 0) 1847 i = '<'; 1848 else 1849 i = ','; 1850 putchar(i); 1851 gotsome = 1; 1852 for (; (i = *str) > 32; str++) 1853 putchar(i); 1854 } else 1855 while (*str > 32) 1856 str++; 1857 } 1858 if (gotsome) 1859 putchar('>'); 1860 } 1861 1862 int 1863 keyword(const char *cp) 1864 { 1865 const struct keytab *kt = keywords; 1866 1867 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0) 1868 kt++; 1869 return (kt->kt_i); 1870 } 1871 1872 static void 1873 sodump(struct sockaddr *sa, const char *which) 1874 { 1875 char atalk_buf[ATALK_BUF_SIZE]; 1876 #ifdef INET6 1877 char nbuf[INET6_ADDRSTRLEN]; 1878 #endif 1879 1880 switch (sa->sa_family) { 1881 case AF_LINK: 1882 (void)printf("%s: link %s; ", which, 1883 link_ntoa((struct sockaddr_dl *)(void *)sa)); 1884 break; 1885 #ifdef INET 1886 case AF_INET: 1887 (void)printf("%s: inet %s; ", which, 1888 inet_ntoa(((struct sockaddr_in *)(void *)sa)->sin_addr)); 1889 break; 1890 #endif 1891 #ifdef INET6 1892 case AF_INET6: 1893 (void)printf("%s: inet6 %s; ", which, inet_ntop(sa->sa_family, 1894 &((struct sockaddr_in6 *)(void *)sa)->sin6_addr, nbuf, 1895 sizeof(nbuf))); 1896 break; 1897 #endif 1898 case AF_APPLETALK: 1899 (void)printf("%s: atalk %s; ", which, 1900 atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr, 1901 atalk_buf)); 1902 break; 1903 } 1904 (void)fflush(stdout); 1905 } 1906 1907 /* States*/ 1908 #define VIRGIN 0 1909 #define GOTONE 1 1910 #define GOTTWO 2 1911 /* Inputs */ 1912 #define DIGIT (4*0) 1913 #define END (4*1) 1914 #define DELIM (4*2) 1915 1916 static void 1917 sockaddr(char *addr, struct sockaddr *sa, size_t size) 1918 { 1919 char *cp = (char *)sa; 1920 char *cplim = cp + size; 1921 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1922 1923 memset(cp, 0, size); 1924 cp++; 1925 do { 1926 if ((*addr >= '0') && (*addr <= '9')) { 1927 new = *addr - '0'; 1928 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1929 new = *addr - 'a' + 10; 1930 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1931 new = *addr - 'A' + 10; 1932 } else if (*addr == '\0') 1933 state |= END; 1934 else 1935 state |= DELIM; 1936 addr++; 1937 switch (state /* | INPUT */) { 1938 case GOTTWO | DIGIT: 1939 *cp++ = byte; /*FALLTHROUGH*/ 1940 case VIRGIN | DIGIT: 1941 state = GOTONE; byte = new; continue; 1942 case GOTONE | DIGIT: 1943 state = GOTTWO; byte = new + (byte << 4); continue; 1944 default: /* | DELIM */ 1945 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1946 case GOTONE | END: 1947 case GOTTWO | END: 1948 *cp++ = byte; /* FALLTHROUGH */ 1949 case VIRGIN | END: 1950 break; 1951 } 1952 break; 1953 } while (cp < cplim); 1954 sa->sa_len = cp - (char *)sa; 1955 } 1956 1957 static int 1958 atalk_aton(const char *text, struct at_addr *addr) 1959 { 1960 u_int net, node; 1961 1962 if (sscanf(text, "%u.%u", &net, &node) != 2 1963 || net > 0xffff || node > 0xff) 1964 return(0); 1965 addr->s_net = htons(net); 1966 addr->s_node = node; 1967 return(1); 1968 } 1969 1970 static char * 1971 atalk_ntoa(struct at_addr at, char buf[ATALK_BUF_SIZE]) 1972 { 1973 (void)snprintf(buf, ATALK_BUF_SIZE, "%u.%u", ntohs(at.s_net), at.s_node); 1974 buf[ATALK_BUF_SIZE - 1] = '\0'; 1975 return(buf); 1976 } 1977