route.c revision 1.132
1 /* $NetBSD: route.c,v 1.132 2011/08/29 14:35:03 joerg Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1989, 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1991, 1993\ 35 The Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)route.c 8.6 (Berkeley) 4/28/95"; 41 #else 42 __RCSID("$NetBSD: route.c,v 1.132 2011/08/29 14:35:03 joerg Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/file.h> 48 #include <sys/socket.h> 49 #include <sys/ioctl.h> 50 #include <sys/mbuf.h> 51 #include <sys/sysctl.h> 52 53 #include <net/if.h> 54 #include <net/route.h> 55 #include <net/if_dl.h> 56 #include <net80211/ieee80211_netbsd.h> 57 #include <netinet/in.h> 58 #include <netatalk/at.h> 59 #include <netiso/iso.h> 60 #include <netmpls/mpls.h> 61 #include <arpa/inet.h> 62 #include <netdb.h> 63 64 #include <errno.h> 65 #include <unistd.h> 66 #include <stdio.h> 67 #include <ctype.h> 68 #include <stdlib.h> 69 #include <string.h> 70 #include <time.h> 71 #include <paths.h> 72 #include <err.h> 73 74 #include <rump/rump.h> 75 #include <rump/rump_syscalls.h> 76 #include <rump/rumpclient.h> 77 78 #include "keywords.h" 79 #include "extern.h" 80 #include "prog_ops.h" 81 82 union sockunion { 83 struct sockaddr sa; 84 struct sockaddr_in sin; 85 #ifdef INET6 86 struct sockaddr_in6 sin6; 87 #endif 88 struct sockaddr_at sat; 89 struct sockaddr_dl sdl; 90 #ifndef SMALL 91 struct sockaddr_iso siso; 92 struct sockaddr_mpls smpls; 93 #endif /* SMALL */ 94 struct sockaddr_storage sstorage; 95 }; 96 97 typedef union sockunion *sup; 98 99 struct sou { 100 union sockunion *so_dst, *so_gate, *so_mask, *so_genmask, *so_ifa, 101 *so_ifp, *so_mpls; 102 }; 103 104 static char *any_ntoa(const struct sockaddr *); 105 static const char *route_strerror(int); 106 static void set_metric(const char *, int); 107 static int newroute(int, char *const *); 108 static void inet_makenetandmask(u_int32_t, struct sockaddr_in *, struct sou *); 109 #ifdef INET6 110 static int inet6_makenetandmask(const struct sockaddr_in6 *, struct sou *); 111 #endif 112 static int getaddr(int, const char *, struct hostent **, struct sou *); 113 static int flushroutes(int, char *const [], int); 114 static int prefixlen(const char *, struct sou *); 115 #ifndef SMALL 116 static void interfaces(void); 117 __dead static void monitor(void); 118 static int print_getmsg(struct rt_msghdr *, int, struct sou *); 119 static const char *linkstate(struct if_msghdr *); 120 static sup readtag(sup, const char *); 121 static void addtag(sup, const char *, int); 122 #endif /* SMALL */ 123 static int rtmsg(int, int, struct sou *); 124 static void mask_addr(struct sou *); 125 static void print_rtmsg(struct rt_msghdr *, int); 126 static void pmsg_common(struct rt_msghdr *); 127 static void pmsg_addrs(const char *, int); 128 static void bprintf(FILE *, int, const char *); 129 static void sodump(sup, const char *); 130 static void sockaddr(const char *, struct sockaddr *); 131 132 int pid, rtm_addrs; 133 int sock; 134 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, Sflag; 135 int iflag, verbose, aflen = sizeof(struct sockaddr_in), rtag; 136 int locking, lockrest, debugonly, shortoutput; 137 struct rt_metrics rt_metrics; 138 int rtm_inits; 139 short ns_nullh[] = {0,0,0}; 140 short ns_bh[] = {-1,-1,-1}; 141 142 143 void 144 usage(const char *cp) 145 { 146 147 if (cp) 148 warnx("botched keyword: %s", cp); 149 (void)fprintf(stderr, 150 "Usage: %s [ -fnqSsv ] cmd [[ -<qualifers> ] args ]\n", 151 getprogname()); 152 exit(1); 153 /* NOTREACHED */ 154 } 155 156 #define PRIETHER "02x:%02x:%02x:%02x:%02x:%02x" 157 #define PRIETHER_ARGS(__enaddr) (__enaddr)[0], (__enaddr)[1], (__enaddr)[2], \ 158 (__enaddr)[3], (__enaddr)[4], (__enaddr)[5] 159 160 int 161 main(int argc, char * const *argv) 162 { 163 int ch; 164 165 if (argc < 2) 166 usage(NULL); 167 168 while ((ch = getopt(argc, argv, "dfnqSstv")) != -1) 169 switch (ch) { 170 case 'd': 171 debugonly = 1; 172 break; 173 case 'f': 174 doflush = 1; 175 break; 176 case 'n': 177 nflag = 1; 178 break; 179 case 'q': 180 qflag = 1; 181 break; 182 case 'S': 183 Sflag = 1; 184 break; 185 case 's': 186 shortoutput = 1; 187 break; 188 case 't': 189 tflag = 1; 190 break; 191 case 'v': 192 verbose = 1; 193 break; 194 case '?': 195 default: 196 usage(NULL); 197 /*NOTREACHED*/ 198 } 199 argc -= optind; 200 argv += optind; 201 202 if (prog_init && prog_init() == -1) 203 err(1, "init failed"); 204 205 pid = prog_getpid(); 206 if (tflag) 207 sock = prog_open("/dev/null", O_WRONLY, 0); 208 else 209 sock = prog_socket(PF_ROUTE, SOCK_RAW, 0); 210 if (sock < 0) 211 err(EXIT_FAILURE, "socket"); 212 213 if (*argv == NULL) { 214 if (doflush) 215 ch = K_FLUSH; 216 else 217 goto no_cmd; 218 } else 219 ch = keyword(*argv); 220 221 switch (ch) { 222 #ifndef SMALL 223 case K_GET: 224 #endif /* SMALL */ 225 case K_CHANGE: 226 case K_ADD: 227 case K_DELETE: 228 if (doflush) 229 (void)flushroutes(1, argv, 0); 230 return newroute(argc, argv); 231 232 case K_SHOW: 233 show(argc, argv); 234 return 0; 235 236 #ifndef SMALL 237 case K_MONITOR: 238 monitor(); 239 return 0; 240 241 #endif /* SMALL */ 242 case K_FLUSH: 243 return flushroutes(argc, argv, 0); 244 245 case K_FLUSHALL: 246 return flushroutes(argc, argv, 1); 247 no_cmd: 248 default: 249 usage(*argv); 250 /*NOTREACHED*/ 251 } 252 } 253 254 /* 255 * Purge all entries in the routing tables not 256 * associated with network interfaces. 257 */ 258 static int 259 flushroutes(int argc, char * const argv[], int doall) 260 { 261 struct sockaddr *sa; 262 size_t needed; 263 int flags, mib[6], rlen, seqno; 264 char *buf, *next, *lim; 265 const char *afname; 266 struct rt_msghdr *rtm; 267 268 flags = 0; 269 af = AF_UNSPEC; 270 /* Don't want to read back our messages */ 271 prog_shutdown(sock, SHUT_RD); 272 parse_show_opts(argc, argv, &af, &flags, &afname, false); 273 mib[0] = CTL_NET; 274 mib[1] = PF_ROUTE; 275 mib[2] = 0; /* protocol */ 276 mib[3] = 0; /* wildcard address family */ 277 mib[4] = NET_RT_DUMP; 278 mib[5] = 0; /* no flags */ 279 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 280 err(EXIT_FAILURE, "route-sysctl-estimate"); 281 buf = lim = NULL; 282 if (needed) { 283 if ((buf = malloc(needed)) == NULL) 284 err(EXIT_FAILURE, "malloc"); 285 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 286 err(EXIT_FAILURE, "actual retrieval of routing table"); 287 lim = buf + needed; 288 } 289 if (verbose) { 290 (void)printf("Examining routing table from sysctl\n"); 291 if (af != AF_UNSPEC) 292 printf("(address family %s)\n", afname); 293 } 294 if (needed == 0) 295 return 0; 296 seqno = 0; /* ??? */ 297 for (next = buf; next < lim; next += rtm->rtm_msglen) { 298 rtm = (struct rt_msghdr *)next; 299 sa = (struct sockaddr *)(rtm + 1); 300 if (verbose) 301 print_rtmsg(rtm, rtm->rtm_msglen); 302 if ((rtm->rtm_flags & flags) != flags) 303 continue; 304 if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC | 305 RTF_LLINFO)) && !doall) 306 continue; 307 if (af != AF_UNSPEC && sa->sa_family != af) 308 continue; 309 if (debugonly) 310 continue; 311 rtm->rtm_type = RTM_DELETE; 312 rtm->rtm_seq = seqno; 313 if ((rlen = prog_write(sock, next, 314 rtm->rtm_msglen)) < 0) { 315 warnx("writing to routing socket: %s", 316 route_strerror(errno)); 317 return 1; 318 } 319 if (rlen < (int)rtm->rtm_msglen) { 320 warnx("write to routing socket, got %d for rlen", rlen); 321 return 1; 322 } 323 seqno++; 324 if (qflag) 325 continue; 326 if (verbose) 327 print_rtmsg(rtm, rlen); 328 else { 329 (void)printf("%-20.20s ", 330 routename(sa, NULL, rtm->rtm_flags)); 331 sa = (struct sockaddr *)(RT_ROUNDUP(sa->sa_len) + 332 (char *)sa); 333 (void)printf("%-20.20s ", 334 routename(sa, NULL, RTF_HOST)); 335 (void)printf("done\n"); 336 } 337 } 338 free(buf); 339 return 0; 340 } 341 342 343 static char hexlist[] = "0123456789abcdef"; 344 345 static char * 346 any_ntoa(const struct sockaddr *sa) 347 { 348 static char obuf[3 * 256]; 349 const char *in; 350 char *out; 351 int len; 352 353 #if __GNUC__ > 2 354 len = sa->sa_len - offsetof(struct sockaddr, sa_data); 355 #else 356 len = sa->sa_len - ((struct sockaddr*)&sa->sa_data - sa); 357 #endif 358 in = sa->sa_data; 359 out = obuf; 360 361 do { 362 *out++ = hexlist[(*in >> 4) & 15]; 363 *out++ = hexlist[(*in++) & 15]; 364 *out++ = '.'; 365 } while (--len > 0); 366 out[-1] = '\0'; 367 return obuf; 368 } 369 370 int 371 netmask_length(struct sockaddr *nm, int family) 372 { 373 static int 374 /* number of bits in a nibble */ 375 _t[] = { 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4 }, 376 /* good nibbles are 1111, 1110, 1100, 1000, 0000 */ 377 _g[] = { 1,0,0,0,0,0,0,0,1,0,0,0,1,0,1,1 }; 378 int mask, good, zeroes, maskbytes, bit, i; 379 unsigned char *maskdata; 380 381 if (nm == NULL) 382 return 0; 383 384 mask = 0; 385 good = 1; 386 zeroes = 0; 387 388 switch (family) { 389 case AF_INET: { 390 struct sockaddr_in *nsin = (struct sockaddr_in *)nm; 391 maskdata = (unsigned char *)&nsin->sin_addr; 392 maskbytes = nsin->sin_len - 393 ((caddr_t)&nsin->sin_addr - (caddr_t)nsin); 394 break; 395 } 396 case AF_INET6: { 397 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nm; 398 maskdata = (unsigned char *)&sin6->sin6_addr; 399 maskbytes = sin6->sin6_len - 400 ((caddr_t)&sin6->sin6_addr - (caddr_t)sin6); 401 break; 402 } 403 default: 404 return 0; 405 } 406 407 /* 408 * Count the bits in the nibbles of the mask, and marking the 409 * netmask as not good (or at best, non-standard and very 410 * discouraged, in the case of AF_INET) if we find either of 411 * a nibble with non-contiguous bits, or a non-zero nibble 412 * after we've found a zero nibble. 413 */ 414 for (i = 0; i < maskbytes; i++) { 415 /* high nibble */ 416 mask += bit = _t[maskdata[i] >> 4]; 417 good &= _g[maskdata[i] >> 4]; 418 if (zeroes && bit) 419 good = 0; 420 if (bit == 0) 421 zeroes = 1; 422 /* low nibble */ 423 mask += bit = _t[maskdata[i] & 0xf]; 424 good &= _g[maskdata[i] & 0xf]; 425 if (zeroes && bit) 426 good = 0; 427 if (bit == 0) 428 zeroes = 1; 429 } 430 431 /* 432 * Always return the number of bits found, but as a negative 433 * if the mask wasn't one we like. 434 */ 435 return good ? mask : -mask; 436 } 437 438 char * 439 netmask_string(const struct sockaddr *mask, int len, int family) 440 { 441 static char smask[INET6_ADDRSTRLEN]; 442 struct sockaddr_in nsin; 443 struct sockaddr_in6 nsin6; 444 445 if (len >= 0) 446 snprintf(smask, sizeof(smask), "%d", len); 447 else { 448 switch (family) { 449 case AF_INET: 450 memset(&nsin, 0, sizeof(nsin)); 451 memcpy(&nsin, mask, mask->sa_len); 452 snprintf(smask, sizeof(smask), "%s", 453 inet_ntoa(nsin.sin_addr)); 454 break; 455 case AF_INET6: 456 memset(&nsin6, 0, sizeof(nsin6)); 457 memcpy(&nsin6, mask, mask->sa_len); 458 inet_ntop(family, &nsin6.sin6_addr, smask, 459 sizeof(smask)); 460 break; 461 default: 462 snprintf(smask, sizeof(smask), "%s", any_ntoa(mask)); 463 } 464 } 465 466 return smask; 467 } 468 469 const char * 470 routename(const struct sockaddr *sa, struct sockaddr *nm, int flags) 471 { 472 const char *cp; 473 static char line[50]; 474 struct hostent *hp; 475 static char domain[MAXHOSTNAMELEN + 1]; 476 static int first = 1; 477 struct in_addr in; 478 int nml; 479 480 if ((flags & RTF_HOST) == 0) 481 return netname(sa, nm); 482 483 if (first) { 484 first = 0; 485 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 486 (cp = strchr(domain, '.'))) 487 (void)strlcpy(domain, cp + 1, sizeof(domain)); 488 else 489 domain[0] = 0; 490 } 491 492 if (sa->sa_len == 0) 493 strlcpy(line, "default", sizeof(line)); 494 else switch (sa->sa_family) { 495 496 case AF_INET: 497 in = ((const struct sockaddr_in *)sa)->sin_addr; 498 nml = netmask_length(nm, AF_INET); 499 500 cp = 0; 501 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) { 502 if (nml == 0) 503 cp = "default"; 504 else { 505 static char notdefault[sizeof(NOTDEFSTRING)]; 506 507 snprintf(notdefault, sizeof(notdefault), 508 "0.0.0.0/%s", 509 netmask_string(nm, nml, AF_INET)); 510 cp = notdefault; 511 } 512 } 513 if (cp == 0 && !nflag) { 514 hp = gethostbyaddr((char *)&in, sizeof(struct in_addr), 515 AF_INET); 516 if (hp) { 517 char *ccp; 518 if ((ccp = strchr(hp->h_name, '.')) && 519 !strcmp(ccp + 1, domain)) 520 *ccp = '\0'; 521 cp = hp->h_name; 522 } 523 } 524 if (cp) 525 (void)strlcpy(line, cp, sizeof(line)); 526 else 527 (void)strlcpy(line, inet_ntoa(in), sizeof(line)); 528 break; 529 530 case AF_LINK: 531 return link_ntoa((const struct sockaddr_dl *)sa); 532 533 #ifdef INET6 534 case AF_INET6: 535 { 536 struct sockaddr_in6 sin6; 537 int niflags; 538 char nihost[NI_MAXHOST]; 539 540 niflags = 0; 541 if (nflag) 542 niflags |= NI_NUMERICHOST; 543 memset(&sin6, 0, sizeof(sin6)); 544 memcpy(&sin6, sa, sa->sa_len); 545 sin6.sin6_len = sizeof(struct sockaddr_in6); 546 sin6.sin6_family = AF_INET6; 547 #ifdef __KAME__ 548 if (sa->sa_len == sizeof(struct sockaddr_in6) && 549 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 550 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 551 sin6.sin6_scope_id == 0) { 552 sin6.sin6_scope_id = 553 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 554 sin6.sin6_addr.s6_addr[2] = 0; 555 sin6.sin6_addr.s6_addr[3] = 0; 556 } 557 #endif 558 nml = netmask_length(nm, AF_INET6); 559 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 560 if (nml == 0) 561 strlcpy(line, "::", sizeof(line)); 562 else 563 /* noncontiguous never happens in ipv6 */ 564 snprintf(line, sizeof(line), "::/%d", nml); 565 } 566 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 567 nihost, sizeof(nihost), NULL, 0, niflags) != 0) 568 strlcpy(line, "invalid", sizeof(line)); 569 else { 570 char *ccp; 571 if (!nflag && (ccp = strchr(nihost, '.')) && 572 strcmp(ccp + 1, domain) == 0) 573 *ccp = '\0'; 574 strlcpy(line, nihost, sizeof(line)); 575 } 576 break; 577 } 578 #endif 579 580 #ifndef SMALL 581 case AF_ISO: 582 (void)snprintf(line, sizeof line, "iso %s", 583 iso_ntoa(&((const struct sockaddr_iso *)sa)->siso_addr)); 584 break; 585 586 case AF_APPLETALK: 587 (void)snprintf(line, sizeof(line), "atalk %d.%d", 588 ((const struct sockaddr_at *)sa)->sat_addr.s_net, 589 ((const struct sockaddr_at *)sa)->sat_addr.s_node); 590 break; 591 case AF_MPLS: 592 { 593 union mpls_shim ms; 594 const union mpls_shim *pms; 595 int psize = sizeof(struct sockaddr_mpls); 596 597 ms.s_addr =((const struct sockaddr_mpls*)sa)->smpls_addr.s_addr; 598 ms.s_addr = ntohl(ms.s_addr); 599 600 snprintf(line, sizeof(line), "%u", ms.shim.label); 601 pms = &((const struct sockaddr_mpls*)sa)->smpls_addr; 602 while(psize < sa->sa_len) { 603 pms++; 604 ms.s_addr = ntohl(pms->s_addr); 605 snprintf(line, sizeof(line), "%s %u", line, 606 ms.shim.label); 607 psize += sizeof(ms); 608 } 609 break; 610 } 611 #endif /* SMALL */ 612 613 default: 614 (void)snprintf(line, sizeof line, "(%d) %s", 615 sa->sa_family, any_ntoa(sa)); 616 break; 617 618 } 619 return line; 620 } 621 622 /* 623 * Return the name of the network whose address is given. 624 * The address is assumed to be that of a net or subnet, not a host. 625 */ 626 const char * 627 netname(const struct sockaddr *sa, struct sockaddr *nm) 628 { 629 const char *cp = 0; 630 static char line[50]; 631 struct netent *np = 0; 632 u_int32_t net, mask; 633 u_int32_t i; 634 int subnetshift, nml; 635 struct in_addr in; 636 637 switch (sa->sa_family) { 638 639 case AF_INET: 640 in = ((const struct sockaddr_in *)sa)->sin_addr; 641 i = ntohl(in.s_addr); 642 nml = netmask_length(nm, AF_INET); 643 if (i == 0) { 644 if (nml == 0) 645 cp = "default"; 646 else { 647 static char notdefault[sizeof(NOTDEFSTRING)]; 648 649 snprintf(notdefault, sizeof(notdefault), 650 "0.0.0.0/%s", 651 netmask_string(nm, nml, AF_INET)); 652 cp = notdefault; 653 } 654 } 655 else if (!nflag) { 656 if (IN_CLASSA(i)) { 657 mask = IN_CLASSA_NET; 658 subnetshift = 8; 659 } else if (IN_CLASSB(i)) { 660 mask = IN_CLASSB_NET; 661 subnetshift = 8; 662 } else { 663 mask = IN_CLASSC_NET; 664 subnetshift = 4; 665 } 666 /* 667 * If there are more bits than the standard mask 668 * would suggest, subnets must be in use. 669 * Guess at the subnet mask, assuming reasonable 670 * width subnet fields. 671 */ 672 while (i &~ mask) 673 mask = (int32_t)mask >> subnetshift; 674 net = i & mask; 675 while ((mask & 1) == 0) 676 mask >>= 1, net >>= 1; 677 np = getnetbyaddr(net, AF_INET); 678 if (np) 679 cp = np->n_name; 680 } 681 if (cp) 682 (void)strlcpy(line, cp, sizeof(line)); 683 else { 684 if (nml == 0) 685 strlcpy(line, inet_ntoa(in), sizeof(line)); 686 else if (nml < 0) { 687 snprintf(line, sizeof(line), "%s&%s", 688 inet_ntoa(in), 689 netmask_string(nm, nml, AF_INET)); 690 } else { 691 snprintf(line, sizeof(line), "%s/%d", 692 inet_ntoa(in), nml); 693 } 694 } 695 break; 696 697 case AF_LINK: 698 return link_ntoa((const struct sockaddr_dl *)sa); 699 700 #ifdef INET6 701 case AF_INET6: 702 { 703 struct sockaddr_in6 sin6; 704 int niflags; 705 706 niflags = 0; 707 if (nflag) 708 niflags |= NI_NUMERICHOST; 709 memset(&sin6, 0, sizeof(sin6)); 710 memcpy(&sin6, sa, sa->sa_len); 711 sin6.sin6_len = sizeof(struct sockaddr_in6); 712 sin6.sin6_family = AF_INET6; 713 #ifdef __KAME__ 714 if (sa->sa_len == sizeof(struct sockaddr_in6) && 715 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 716 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 717 sin6.sin6_scope_id == 0) { 718 sin6.sin6_scope_id = 719 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 720 sin6.sin6_addr.s6_addr[2] = 0; 721 sin6.sin6_addr.s6_addr[3] = 0; 722 } 723 #endif 724 nml = netmask_length(nm, AF_INET6); 725 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 726 if (nml == 0) 727 strlcpy(line, "::", sizeof(line)); 728 else 729 /* noncontiguous never happens in ipv6 */ 730 snprintf(line, sizeof(line), "::/%d", nml); 731 } 732 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 733 line, sizeof(line), NULL, 0, niflags) != 0) 734 strlcpy(line, "invalid", sizeof(line)); 735 break; 736 } 737 #endif 738 739 #ifndef SMALL 740 case AF_ISO: 741 (void)snprintf(line, sizeof line, "iso %s", 742 iso_ntoa(&((const struct sockaddr_iso *)sa)->siso_addr)); 743 break; 744 745 case AF_APPLETALK: 746 (void)snprintf(line, sizeof(line), "atalk %d.%d", 747 ((const struct sockaddr_at *)sa)->sat_addr.s_net, 748 ((const struct sockaddr_at *)sa)->sat_addr.s_node); 749 break; 750 #endif /* SMALL */ 751 752 default: 753 (void)snprintf(line, sizeof line, "af %d: %s", 754 sa->sa_family, any_ntoa(sa)); 755 break; 756 } 757 return line; 758 } 759 760 static const char * 761 route_strerror(int error) 762 { 763 764 switch (error) { 765 case ESRCH: 766 return "not in table"; 767 case EBUSY: 768 return "entry in use"; 769 case ENOBUFS: 770 return "routing table overflow"; 771 default: 772 return strerror(error); 773 } 774 } 775 776 static void 777 set_metric(const char *value, int key) 778 { 779 int flag = 0; 780 uint64_t noval, *valp = &noval; 781 782 switch (key) { 783 #define caseof(x, y, z) \ 784 case x: valp = (uint64_t *)&rt_metrics.z; flag = y; break 785 caseof(K_MTU, RTV_MTU, rmx_mtu); 786 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 787 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 788 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 789 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 790 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 791 caseof(K_RTT, RTV_RTT, rmx_rtt); 792 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 793 } 794 rtm_inits |= flag; 795 if (lockrest || locking) 796 rt_metrics.rmx_locks |= flag; 797 if (locking) 798 locking = 0; 799 *valp = strtoul(value, NULL, 0); 800 } 801 802 static int 803 newroute(int argc, char *const *argv) 804 { 805 const char *cmd, *dest = "", *gateway = ""; 806 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 807 int key; 808 struct hostent *hp = 0; 809 struct sou sou, *soup = &sou; 810 811 sou.so_dst = calloc(1, sizeof(union sockunion)); 812 sou.so_gate = calloc(1, sizeof(union sockunion)); 813 sou.so_mask = calloc(1, sizeof(union sockunion)); 814 sou.so_genmask = calloc(1, sizeof(union sockunion)); 815 sou.so_ifa = calloc(1, sizeof(union sockunion)); 816 sou.so_ifp = calloc(1, sizeof(union sockunion)); 817 sou.so_mpls = calloc(1, sizeof(union sockunion)); 818 819 if (sou.so_dst == NULL || sou.so_gate == NULL || sou.so_mask == NULL || 820 sou.so_genmask == NULL || sou.so_ifa == NULL || sou.so_ifp == NULL || 821 sou.so_mpls == NULL) 822 errx(EXIT_FAILURE, "Cannot allocate memory"); 823 824 cmd = argv[0]; 825 af = AF_UNSPEC; 826 if (*cmd != 'g') { 827 /* Don't want to read back our messages */ 828 prog_shutdown(sock, SHUT_RD); 829 } 830 while (--argc > 0) { 831 if (**(++argv)== '-') { 832 switch (key = keyword(1 + *argv)) { 833 834 case K_SA: 835 af = PF_ROUTE; 836 aflen = sizeof(union sockunion); 837 break; 838 839 #ifndef SMALL 840 case K_ATALK: 841 af = AF_APPLETALK; 842 aflen = sizeof(struct sockaddr_at); 843 break; 844 #endif 845 846 case K_INET: 847 af = AF_INET; 848 aflen = sizeof(struct sockaddr_in); 849 break; 850 851 #ifdef INET6 852 case K_INET6: 853 af = AF_INET6; 854 aflen = sizeof(struct sockaddr_in6); 855 break; 856 #endif 857 858 case K_LINK: 859 af = AF_LINK; 860 aflen = sizeof(struct sockaddr_dl); 861 break; 862 863 #ifndef SMALL 864 case K_OSI: 865 case K_ISO: 866 af = AF_ISO; 867 aflen = sizeof(struct sockaddr_iso); 868 break; 869 case K_MPLS: 870 af = AF_MPLS; 871 aflen = sizeof(struct sockaddr_mpls); 872 break; 873 case K_TAG: 874 if (!--argc) 875 usage(1+*argv); 876 af = AF_MPLS; 877 aflen = sizeof(struct sockaddr_mpls); 878 (void)getaddr(RTA_TAG, *++argv, 0, soup); 879 break; 880 #endif /* SMALL */ 881 882 case K_IFACE: 883 case K_INTERFACE: 884 iflag++; 885 break; 886 case K_NOSTATIC: 887 flags &= ~RTF_STATIC; 888 break; 889 case K_LLINFO: 890 flags |= RTF_LLINFO; 891 break; 892 case K_LOCK: 893 locking = 1; 894 break; 895 case K_LOCKREST: 896 lockrest = 1; 897 break; 898 case K_HOST: 899 forcehost++; 900 break; 901 case K_REJECT: 902 flags |= RTF_REJECT; 903 break; 904 case K_NOREJECT: 905 flags &= ~RTF_REJECT; 906 break; 907 case K_BLACKHOLE: 908 flags |= RTF_BLACKHOLE; 909 break; 910 case K_NOBLACKHOLE: 911 flags &= ~RTF_BLACKHOLE; 912 break; 913 case K_CLONED: 914 flags |= RTF_CLONED; 915 break; 916 case K_NOCLONED: 917 flags &= ~RTF_CLONED; 918 break; 919 case K_PROTO1: 920 flags |= RTF_PROTO1; 921 break; 922 case K_PROTO2: 923 flags |= RTF_PROTO2; 924 break; 925 case K_CLONING: 926 flags |= RTF_CLONING; 927 break; 928 case K_NOCLONING: 929 flags &= ~RTF_CLONING; 930 break; 931 case K_XRESOLVE: 932 flags |= RTF_XRESOLVE; 933 break; 934 case K_STATIC: 935 flags |= RTF_STATIC; 936 break; 937 case K_IFA: 938 if (!--argc) 939 usage(1+*argv); 940 (void)getaddr(RTA_IFA, *++argv, 0, soup); 941 break; 942 case K_IFP: 943 if (!--argc) 944 usage(1+*argv); 945 (void)getaddr(RTA_IFP, *++argv, 0, soup); 946 break; 947 case K_GENMASK: 948 if (!--argc) 949 usage(1+*argv); 950 (void)getaddr(RTA_GENMASK, *++argv, 0, soup); 951 break; 952 case K_GATEWAY: 953 if (!--argc) 954 usage(1+*argv); 955 (void)getaddr(RTA_GATEWAY, *++argv, 0, soup); 956 break; 957 case K_DST: 958 if (!--argc) 959 usage(1+*argv); 960 ishost = getaddr(RTA_DST, *++argv, &hp, soup); 961 dest = *argv; 962 break; 963 case K_NETMASK: 964 if (!--argc) 965 usage(1+*argv); 966 (void)getaddr(RTA_NETMASK, *++argv, 0, soup); 967 /* FALLTHROUGH */ 968 case K_NET: 969 forcenet++; 970 break; 971 case K_PREFIXLEN: 972 if (!--argc) 973 usage(1+*argv); 974 ishost = prefixlen(*++argv, soup); 975 break; 976 case K_MTU: 977 case K_HOPCOUNT: 978 case K_EXPIRE: 979 case K_RECVPIPE: 980 case K_SENDPIPE: 981 case K_SSTHRESH: 982 case K_RTT: 983 case K_RTTVAR: 984 if (!--argc) 985 usage(1+*argv); 986 set_metric(*++argv, key); 987 break; 988 default: 989 usage(1+*argv); 990 } 991 } else { 992 if ((rtm_addrs & RTA_DST) == 0) { 993 dest = *argv; 994 ishost = getaddr(RTA_DST, *argv, &hp, soup); 995 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 996 gateway = *argv; 997 (void)getaddr(RTA_GATEWAY, *argv, &hp, soup); 998 } else { 999 ret = atoi(*argv); 1000 1001 if (ret == 0) { 1002 if (strcmp(*argv, "0") == 0) { 1003 if (!qflag) { 1004 warnx("%s, %s", 1005 "old usage of trailing 0", 1006 "assuming route to if"); 1007 } 1008 } else 1009 usage(NULL); 1010 iflag = 1; 1011 continue; 1012 } else if (ret > 0 && ret < 10) { 1013 if (!qflag) { 1014 warnx("%s, %s", 1015 "old usage of trailing digit", 1016 "assuming route via gateway"); 1017 } 1018 iflag = 0; 1019 continue; 1020 } 1021 (void)getaddr(RTA_NETMASK, *argv, 0, soup); 1022 } 1023 } 1024 } 1025 if (forcehost && forcenet) 1026 errx(EXIT_FAILURE, "-host and -net conflict"); 1027 else if (forcehost) 1028 ishost = 1; 1029 else if (forcenet) 1030 ishost = 0; 1031 flags |= RTF_UP; 1032 if (ishost) 1033 flags |= RTF_HOST; 1034 if (iflag == 0) 1035 flags |= RTF_GATEWAY; 1036 for (attempts = 1; ; attempts++) { 1037 errno = 0; 1038 if ((ret = rtmsg(*cmd, flags, soup)) == 0) 1039 break; 1040 if (errno != ENETUNREACH && errno != ESRCH) 1041 break; 1042 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 1043 hp->h_addr_list++; 1044 memmove(&soup->so_gate->sin.sin_addr, hp->h_addr_list[0], 1045 hp->h_length); 1046 } else 1047 break; 1048 } 1049 if (*cmd == 'g') 1050 return ret != 0; 1051 if (!qflag) { 1052 oerrno = errno; 1053 (void)printf("%s %s %s", cmd, ishost? "host" : "net", dest); 1054 if (*gateway) { 1055 (void)printf(": gateway %s", gateway); 1056 if (attempts > 1 && ret == 0 && af == AF_INET) 1057 (void)printf(" (%s)", 1058 inet_ntoa(soup->so_gate->sin.sin_addr)); 1059 } 1060 if (ret == 0) 1061 (void)printf("\n"); 1062 else 1063 (void)printf(": %s\n", route_strerror(oerrno)); 1064 } 1065 free(sou.so_dst); 1066 free(sou.so_gate); 1067 free(sou.so_mask); 1068 free(sou.so_genmask); 1069 free(sou.so_ifa); 1070 free(sou.so_ifp); 1071 free(sou.so_mpls); 1072 1073 return ret != 0; 1074 } 1075 1076 static void 1077 inet_makenetandmask(const u_int32_t net, struct sockaddr_in * const isin, 1078 struct sou *soup) 1079 { 1080 struct sockaddr_in *sin; 1081 u_int32_t addr, mask = 0; 1082 char *cp; 1083 1084 rtm_addrs |= RTA_NETMASK; 1085 if (net == 0) 1086 mask = addr = 0; 1087 else if (net < 128) { 1088 addr = net << IN_CLASSA_NSHIFT; 1089 mask = IN_CLASSA_NET; 1090 } else if (net < 192) { 1091 addr = net << IN_CLASSA_NSHIFT; 1092 mask = IN_CLASSB_NET; 1093 } else if (net < 224) { 1094 addr = net << IN_CLASSA_NSHIFT; 1095 mask = IN_CLASSC_NET; 1096 } else if (net < 256) { 1097 addr = net << IN_CLASSA_NSHIFT; 1098 mask = IN_CLASSD_NET; 1099 } else if (net < 49152) { /* 192 * 256 */ 1100 addr = net << IN_CLASSB_NSHIFT; 1101 mask = IN_CLASSB_NET; 1102 } else if (net < 57344) { /* 224 * 256 */ 1103 addr = net << IN_CLASSB_NSHIFT; 1104 mask = IN_CLASSC_NET; 1105 } else if (net < 65536) { 1106 addr = net << IN_CLASSB_NSHIFT; 1107 mask = IN_CLASSB_NET; 1108 } else if (net < 14680064L) { /* 224 * 65536 */ 1109 addr = net << IN_CLASSC_NSHIFT; 1110 mask = IN_CLASSC_NET; 1111 } else if (net < 16777216L) { 1112 addr = net << IN_CLASSC_NSHIFT; 1113 mask = IN_CLASSD_NET; 1114 } else { 1115 addr = net; 1116 if ((addr & IN_CLASSA_HOST) == 0) 1117 mask = IN_CLASSA_NET; 1118 else if ((addr & IN_CLASSB_HOST) == 0) 1119 mask = IN_CLASSB_NET; 1120 else if ((addr & IN_CLASSC_HOST) == 0) 1121 mask = IN_CLASSC_NET; 1122 else 1123 mask = -1; 1124 } 1125 isin->sin_addr.s_addr = htonl(addr); 1126 sin = &soup->so_mask->sin; 1127 sin->sin_addr.s_addr = htonl(mask); 1128 sin->sin_len = 0; 1129 sin->sin_family = 0; 1130 cp = (char *)(&sin->sin_addr + 1); 1131 while (*--cp == 0 && cp > (char *)sin) 1132 ; 1133 sin->sin_len = 1 + cp - (char *)sin; 1134 sin->sin_family = AF_INET; 1135 } 1136 1137 #ifdef INET6 1138 /* 1139 * XXX the function may need more improvement... 1140 */ 1141 static int 1142 inet6_makenetandmask(const struct sockaddr_in6 * const sin6, struct sou *soup) 1143 { 1144 const char *plen; 1145 struct in6_addr in6; 1146 1147 plen = NULL; 1148 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 1149 sin6->sin6_scope_id == 0) { 1150 plen = "0"; 1151 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 1152 /* aggregatable global unicast - RFC2374 */ 1153 memset(&in6, 0, sizeof(in6)); 1154 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 1155 plen = "64"; 1156 } 1157 1158 if (!plen || strcmp(plen, "128") == 0) 1159 return 1; 1160 else { 1161 rtm_addrs |= RTA_NETMASK; 1162 (void)prefixlen(plen, soup); 1163 return 0; 1164 } 1165 } 1166 #endif 1167 1168 /* 1169 * Interpret an argument as a network address of some kind, 1170 * returning 1 if a host address, 0 if a network address. 1171 */ 1172 static int 1173 getaddr(int which, const char *s, struct hostent **hpp, struct sou *soup) 1174 { 1175 sup su; 1176 struct hostent *hp; 1177 struct netent *np; 1178 u_int32_t val; 1179 char *t; 1180 int afamily; /* local copy of af so we can change it */ 1181 1182 if (af == AF_UNSPEC) { 1183 af = AF_INET; 1184 aflen = sizeof(struct sockaddr_in); 1185 } 1186 afamily = af; 1187 rtm_addrs |= which; 1188 switch (which) { 1189 case RTA_DST: 1190 su = soup->so_dst; 1191 break; 1192 case RTA_GATEWAY: 1193 su = soup->so_gate; 1194 break; 1195 case RTA_NETMASK: 1196 su = soup->so_mask; 1197 break; 1198 case RTA_GENMASK: 1199 su = soup->so_genmask; 1200 break; 1201 case RTA_IFP: 1202 su = soup->so_ifp; 1203 afamily = AF_LINK; 1204 break; 1205 case RTA_IFA: 1206 su = soup->so_ifa; 1207 su->sa.sa_family = af; 1208 break; 1209 #ifndef SMALL 1210 case RTA_TAG: 1211 su = soup->so_mpls; 1212 afamily = AF_MPLS; 1213 break; 1214 #endif 1215 default: 1216 su = NULL; 1217 usage("Internal Error"); 1218 /*NOTREACHED*/ 1219 } 1220 su->sa.sa_len = aflen; 1221 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1222 if (strcmp(s, "default") == 0) { 1223 switch (which) { 1224 case RTA_DST: 1225 forcenet++; 1226 (void)getaddr(RTA_NETMASK, s, 0, soup); 1227 break; 1228 case RTA_NETMASK: 1229 case RTA_GENMASK: 1230 su->sa.sa_len = 0; 1231 } 1232 return 0; 1233 } 1234 switch (afamily) { 1235 #ifdef INET6 1236 case AF_INET6: 1237 { 1238 struct addrinfo hints, *res; 1239 char *slash = 0; 1240 1241 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 1242 *slash = '\0'; 1243 memset(&hints, 0, sizeof(hints)); 1244 hints.ai_family = afamily; /*AF_INET6*/ 1245 hints.ai_flags = AI_NUMERICHOST; 1246 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1247 if (getaddrinfo(s, "0", &hints, &res) != 0) { 1248 hints.ai_flags = 0; 1249 if (slash) { 1250 *slash = '/'; 1251 slash = 0; 1252 } 1253 if (getaddrinfo(s, "0", &hints, &res) != 0) 1254 errx(EXIT_FAILURE, "%s: bad value", s); 1255 } 1256 if (slash) 1257 *slash = '/'; 1258 if (sizeof(su->sin6) != res->ai_addrlen) 1259 errx(EXIT_FAILURE, "%s: bad value", s); 1260 if (res->ai_next) { 1261 errx(EXIT_FAILURE, 1262 "%s: address resolved to multiple values", s); 1263 } 1264 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1265 freeaddrinfo(res); 1266 #ifdef __KAME__ 1267 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1268 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1269 su->sin6.sin6_scope_id) { 1270 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1271 htons(su->sin6.sin6_scope_id); 1272 su->sin6.sin6_scope_id = 0; 1273 } 1274 #endif 1275 if (hints.ai_flags == AI_NUMERICHOST) { 1276 if (slash) 1277 return prefixlen(slash + 1, soup); 1278 if (which == RTA_DST) 1279 return inet6_makenetandmask(&su->sin6, soup); 1280 return 0; 1281 } else 1282 return 1; 1283 } 1284 #endif 1285 1286 #ifndef SMALL 1287 case AF_OSI: 1288 su->siso.siso_addr = *iso_addr(s); 1289 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1290 const char *cp = TSEL(&su->siso); 1291 su->siso.siso_nlen = 0; 1292 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1293 su->siso.siso_len = 1 + cp - (char *)su; 1294 } 1295 return 1; 1296 #endif /* SMALL */ 1297 1298 case PF_ROUTE: 1299 su->sa.sa_len = sizeof(*su); 1300 sockaddr(s, &su->sa); 1301 return 1; 1302 1303 #ifndef SMALL 1304 case AF_APPLETALK: 1305 t = strchr (s, '.'); 1306 if (!t) { 1307 badataddr: 1308 errx(EXIT_FAILURE, "bad address: %s", s); 1309 } 1310 val = atoi (s); 1311 if (val > 65535) 1312 goto badataddr; 1313 su->sat.sat_addr.s_net = val; 1314 val = atoi (t); 1315 if (val > 256) 1316 goto badataddr; 1317 su->sat.sat_addr.s_node = val; 1318 rtm_addrs |= RTA_NETMASK; 1319 return(forcehost || su->sat.sat_addr.s_node != 0); 1320 case AF_MPLS: 1321 if (which == RTA_DST) 1322 soup->so_dst = readtag(su, s); 1323 else if (which == RTA_TAG) 1324 soup->so_mpls = readtag(su, s); 1325 else 1326 errx(EXIT_FAILURE, "MPLS can be used only as " 1327 "DST or TAG"); 1328 return 1; 1329 #endif 1330 1331 case AF_LINK: 1332 link_addr(s, &su->sdl); 1333 return 1; 1334 1335 case AF_INET: 1336 default: 1337 break; 1338 } 1339 1340 if (hpp == NULL) 1341 hpp = &hp; 1342 *hpp = NULL; 1343 1344 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 1345 *t = '\0'; 1346 if (forcenet == 0) { 1347 if ((val = inet_addr(s)) != INADDR_NONE) { 1348 inet_makenetandmask(htonl(val), &su->sin, soup); 1349 return prefixlen(&t[1], soup); 1350 } 1351 } else { 1352 if ((val = inet_network(s)) != INADDR_NONE) { 1353 inet_makenetandmask(val, &su->sin, soup); 1354 return prefixlen(&t[1], soup); 1355 } 1356 } 1357 *t = '/'; 1358 } 1359 if (inet_aton(s, &su->sin.sin_addr) && 1360 (which != RTA_DST || forcenet == 0)) { 1361 val = su->sin.sin_addr.s_addr; 1362 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1363 return 1; 1364 else { 1365 val = ntohl(val); 1366 goto netdone; 1367 } 1368 } 1369 if ((val = inet_network(s)) != INADDR_NONE || 1370 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1371 netdone: 1372 if (which == RTA_DST) 1373 inet_makenetandmask(val, &su->sin, soup); 1374 return 0; 1375 } 1376 hp = gethostbyname(s); 1377 if (hp) { 1378 *hpp = hp; 1379 su->sin.sin_family = hp->h_addrtype; 1380 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1381 return 1; 1382 } 1383 errx(EXIT_FAILURE, "%s: bad value", s); 1384 /*NOTREACHED*/ 1385 } 1386 1387 #ifndef SMALL 1388 static sup 1389 readtag(sup su, const char *s) 1390 { 1391 char *p, *n, *norig; 1392 int mplssize = 0; 1393 sup retsu = su; 1394 1395 n = (char*)malloc(strlen(s) + 1); 1396 if (n == NULL) 1397 errx(EXIT_FAILURE, "%s: Cannot allocate memory", s); 1398 norig = n; 1399 strlcpy(n, s, strlen(s) + 1); 1400 for (uint i = 0; i < strlen(n); i++) 1401 if(n[i] == ',') 1402 mplssize++; 1403 1404 #define MPLS_NEW_SIZE (sizeof(struct sockaddr_mpls) + \ 1405 mplssize * sizeof(union mpls_shim)) 1406 1407 if (mplssize != 0 && sizeof(union sockunion) < MPLS_NEW_SIZE) { 1408 free(su); 1409 retsu = malloc(MPLS_NEW_SIZE); 1410 retsu->smpls.smpls_family = AF_MPLS; 1411 } 1412 retsu->smpls.smpls_len = MPLS_NEW_SIZE; 1413 mplssize = 0; 1414 while ((p = strchr(n, ',')) != NULL) { 1415 p[0] = '\0'; 1416 addtag(retsu, n, mplssize); 1417 n = p + 1; 1418 mplssize++; 1419 } 1420 addtag(retsu, n, mplssize); 1421 1422 free(norig); 1423 return retsu; 1424 } 1425 1426 static void 1427 addtag(sup su, const char *s, int where) 1428 { 1429 union mpls_shim *ms = &su->smpls.smpls_addr; 1430 1431 if (atoi(s) < 0 || atoi(s) >= (1 << 20)) 1432 errx(EXIT_FAILURE, "%s: Bad tag", s); 1433 ms[where].s_addr = 0; 1434 ms[where].shim.label = atoi(s); 1435 ms[where].s_addr = htonl(ms[where].s_addr); 1436 } 1437 #endif /* SMALL */ 1438 1439 int 1440 prefixlen(const char *s, struct sou *soup) 1441 { 1442 int len = atoi(s), q, r; 1443 int max; 1444 1445 switch (af) { 1446 case AF_INET: 1447 max = sizeof(struct in_addr) * 8; 1448 break; 1449 #ifdef INET6 1450 case AF_INET6: 1451 max = sizeof(struct in6_addr) * 8; 1452 break; 1453 #endif 1454 default: 1455 errx(EXIT_FAILURE, "prefixlen is not supported with af %d", af); 1456 /*NOTREACHED*/ 1457 } 1458 1459 rtm_addrs |= RTA_NETMASK; 1460 if (len < -1 || len > max) 1461 errx(EXIT_FAILURE, "%s: bad value", s); 1462 1463 q = len >> 3; 1464 r = len & 7; 1465 switch (af) { 1466 case AF_INET: 1467 memset(soup->so_mask, 0, sizeof(*soup->so_mask)); 1468 soup->so_mask->sin.sin_family = AF_INET; 1469 soup->so_mask->sin.sin_len = sizeof(struct sockaddr_in); 1470 soup->so_mask->sin.sin_addr.s_addr = (len == 0 ? 0 1471 : htonl(0xffffffff << (32 - len))); 1472 break; 1473 #ifdef INET6 1474 case AF_INET6: 1475 soup->so_mask->sin6.sin6_family = AF_INET6; 1476 soup->so_mask->sin6.sin6_len = sizeof(struct sockaddr_in6); 1477 memset(&soup->so_mask->sin6.sin6_addr, 0, 1478 sizeof(soup->so_mask->sin6.sin6_addr)); 1479 if (q > 0) 1480 memset(&soup->so_mask->sin6.sin6_addr, 0xff, q); 1481 if (r > 0) 1482 *((u_char *)&soup->so_mask->sin6.sin6_addr + q) = 1483 (0xff00 >> r) & 0xff; 1484 break; 1485 #endif 1486 } 1487 return len == max; 1488 } 1489 1490 #ifndef SMALL 1491 static void 1492 interfaces(void) 1493 { 1494 size_t needed; 1495 int mib[6]; 1496 char *buf, *lim, *next; 1497 struct rt_msghdr *rtm; 1498 1499 mib[0] = CTL_NET; 1500 mib[1] = PF_ROUTE; 1501 mib[2] = 0; /* protocol */ 1502 mib[3] = 0; /* wildcard address family */ 1503 mib[4] = NET_RT_IFLIST; 1504 mib[5] = 0; /* no flags */ 1505 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1506 err(EXIT_FAILURE, "route-sysctl-estimate"); 1507 if (needed) { 1508 if ((buf = malloc(needed)) == NULL) 1509 err(EXIT_FAILURE, "malloc"); 1510 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 1511 err(EXIT_FAILURE, 1512 "actual retrieval of interface table"); 1513 } 1514 lim = buf + needed; 1515 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1516 rtm = (struct rt_msghdr *)next; 1517 print_rtmsg(rtm, rtm->rtm_msglen); 1518 } 1519 free(buf); 1520 } 1521 } 1522 1523 static void 1524 monitor(void) 1525 { 1526 int n; 1527 union { 1528 char msg[2048]; 1529 struct rt_msghdr hdr; 1530 } u; 1531 1532 verbose = 1; 1533 if (debugonly) { 1534 interfaces(); 1535 exit(0); 1536 } 1537 for(;;) { 1538 time_t now; 1539 n = prog_read(sock, &u, sizeof(u)); 1540 now = time(NULL); 1541 (void)printf("got message of size %d on %s", n, ctime(&now)); 1542 print_rtmsg(&u.hdr, n); 1543 } 1544 } 1545 1546 #endif /* SMALL */ 1547 1548 1549 struct { 1550 struct rt_msghdr m_rtm; 1551 char m_space[512]; 1552 } m_rtmsg; 1553 1554 static int 1555 rtmsg(int cmd, int flags, struct sou *soup) 1556 { 1557 static int seq; 1558 int rlen; 1559 char *cp = m_rtmsg.m_space; 1560 int l; 1561 1562 #define NEXTADDR(w, u) \ 1563 if (rtm_addrs & (w)) {\ 1564 l = RT_ROUNDUP(u->sa.sa_len); memmove(cp, u, l); cp += l;\ 1565 if (verbose && ! shortoutput) sodump(u,#u);\ 1566 } 1567 1568 errno = 0; 1569 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1570 if (cmd == 'a') 1571 cmd = RTM_ADD; 1572 else if (cmd == 'c') 1573 cmd = RTM_CHANGE; 1574 else if (cmd == 'g') { 1575 #ifdef SMALL 1576 return -1; 1577 #else /* SMALL */ 1578 cmd = RTM_GET; 1579 if (soup->so_ifp->sa.sa_family == AF_UNSPEC) { 1580 soup->so_ifp->sa.sa_family = AF_LINK; 1581 soup->so_ifp->sa.sa_len = sizeof(struct sockaddr_dl); 1582 rtm_addrs |= RTA_IFP; 1583 } 1584 #endif /* SMALL */ 1585 } else 1586 cmd = RTM_DELETE; 1587 #define rtm m_rtmsg.m_rtm 1588 rtm.rtm_type = cmd; 1589 rtm.rtm_flags = flags; 1590 rtm.rtm_version = RTM_VERSION; 1591 rtm.rtm_seq = ++seq; 1592 rtm.rtm_addrs = rtm_addrs; 1593 rtm.rtm_rmx = rt_metrics; 1594 rtm.rtm_inits = rtm_inits; 1595 1596 if (rtm_addrs & RTA_NETMASK) 1597 mask_addr(soup); 1598 NEXTADDR(RTA_DST, soup->so_dst); 1599 NEXTADDR(RTA_GATEWAY, soup->so_gate); 1600 NEXTADDR(RTA_NETMASK, soup->so_mask); 1601 NEXTADDR(RTA_GENMASK, soup->so_genmask); 1602 NEXTADDR(RTA_IFP, soup->so_ifp); 1603 NEXTADDR(RTA_IFA, soup->so_ifa); 1604 #ifndef SMALL 1605 NEXTADDR(RTA_TAG, soup->so_mpls); 1606 #endif 1607 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1608 if (verbose && ! shortoutput) { 1609 if (rtm_addrs) 1610 putchar('\n'); 1611 print_rtmsg(&rtm, l); 1612 } 1613 if (debugonly) 1614 return 0; 1615 if ((rlen = prog_write(sock, (char *)&m_rtmsg, l)) < 0) { 1616 warnx("writing to routing socket: %s", route_strerror(errno)); 1617 return -1; 1618 } 1619 if (rlen < l) { 1620 warnx("write to routing socket, got %d for rlen", rlen); 1621 return 1; 1622 } 1623 #ifndef SMALL 1624 if (cmd == RTM_GET) { 1625 do { 1626 l = prog_read(sock, 1627 (char *)&m_rtmsg, sizeof(m_rtmsg)); 1628 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1629 if (l < 0) 1630 err(EXIT_FAILURE, "read from routing socket"); 1631 else 1632 return print_getmsg(&rtm, l, soup); 1633 } 1634 #endif /* SMALL */ 1635 #undef rtm 1636 return 0; 1637 } 1638 1639 static void 1640 mask_addr(struct sou *soup) 1641 { 1642 int olen = soup->so_mask->sa.sa_len; 1643 char *cp1 = olen + (char *)&soup->so_mask, *cp2; 1644 1645 for (soup->so_mask->sa.sa_len = 0; cp1 > (char *)&soup->so_mask; ) 1646 if (*--cp1 != 0) { 1647 soup->so_mask->sa.sa_len = 1 + cp1 - (char *)&soup->so_mask; 1648 break; 1649 } 1650 if ((rtm_addrs & RTA_DST) == 0) 1651 return; 1652 switch (soup->so_dst->sa.sa_family) { 1653 case AF_INET: 1654 #ifdef INET6 1655 case AF_INET6: 1656 #endif 1657 #ifndef SMALL 1658 case AF_APPLETALK: 1659 #endif /* SMALL */ 1660 case 0: 1661 return; 1662 #ifndef SMALL 1663 case AF_ISO: 1664 olen = MIN(soup->so_dst->siso.siso_nlen, 1665 MAX(soup->so_mask->sa.sa_len - 6, 0)); 1666 break; 1667 #endif /* SMALL */ 1668 } 1669 cp1 = soup->so_mask->sa.sa_len + 1 + (char *)&soup->so_dst; 1670 cp2 = soup->so_dst->sa.sa_len + 1 + (char *)&soup->so_dst; 1671 while (cp2 > cp1) 1672 *--cp2 = 0; 1673 cp2 = soup->so_mask->sa.sa_len + 1 + (char *)&soup->so_mask; 1674 while (cp1 > soup->so_dst->sa.sa_data) 1675 *--cp1 &= *--cp2; 1676 #ifndef SMALL 1677 switch (soup->so_dst->sa.sa_family) { 1678 case AF_ISO: 1679 soup->so_dst->siso.siso_nlen = olen; 1680 break; 1681 } 1682 #endif /* SMALL */ 1683 } 1684 1685 const char * const msgtypes[] = { 1686 [RTM_ADD] = "RTM_ADD: Add Route", 1687 [RTM_DELETE] = "RTM_DELETE: Delete Route", 1688 [RTM_CHANGE] = "RTM_CHANGE: Change Metrics or flags", 1689 [RTM_GET] = "RTM_GET: Report Metrics", 1690 [RTM_LOSING] = "RTM_LOSING: Kernel Suspects Partitioning", 1691 [RTM_REDIRECT] = "RTM_REDIRECT: Told to use different route", 1692 [RTM_MISS] = "RTM_MISS: Lookup failed on this address", 1693 [RTM_LOCK] = "RTM_LOCK: fix specified metrics", 1694 [RTM_OLDADD] = "RTM_OLDADD: caused by SIOCADDRT", 1695 [RTM_OLDDEL] = "RTM_OLDDEL: caused by SIOCDELRT", 1696 [RTM_RESOLVE] = "RTM_RESOLVE: Route created by cloning", 1697 [RTM_NEWADDR] = "RTM_NEWADDR: address being added to iface", 1698 [RTM_DELADDR] = "RTM_DELADDR: address being removed from iface", 1699 [RTM_OOIFINFO] = "RTM_OOIFINFO: iface status change (pre-1.5)", 1700 [RTM_OIFINFO] = "RTM_OIFINFO: iface status change (pre-64bit time)", 1701 [RTM_IFANNOUNCE] = "RTM_IFANNOUNCE: iface arrival/departure", 1702 [RTM_IEEE80211] = "RTM_IEEE80211: IEEE80211 wireless event", 1703 [RTM_IFINFO] = "RTM_IFINFO: iface status change", 1704 [RTM_CHGADDR] = "RTM_CHGADDR: address being changed on iface", 1705 }; 1706 1707 const char metricnames[] = 1708 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1709 const char routeflags[] = 1710 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1711 const char ifnetflags[] = 1712 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1713 const char addrnames[] = 1714 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD\011TAG"; 1715 1716 1717 #ifndef SMALL 1718 static const char * 1719 linkstate(struct if_msghdr *ifm) 1720 { 1721 static char buf[64]; 1722 1723 switch (ifm->ifm_data.ifi_link_state) { 1724 case LINK_STATE_UNKNOWN: 1725 return "carrier: unknown"; 1726 case LINK_STATE_DOWN: 1727 return "carrier: no carrier"; 1728 case LINK_STATE_UP: 1729 return "carrier: active"; 1730 default: 1731 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1732 ifm->ifm_data.ifi_link_state); 1733 return buf; 1734 } 1735 } 1736 #endif /* SMALL */ 1737 1738 static void 1739 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1740 { 1741 struct if_msghdr *ifm; 1742 struct ifa_msghdr *ifam; 1743 struct if_announcemsghdr *ifan; 1744 union { 1745 struct ieee80211_join_event join; 1746 struct ieee80211_leave_event leave; 1747 struct ieee80211_replay_event replay; 1748 struct ieee80211_michael_event michael; 1749 } ev; 1750 size_t evlen = 0; 1751 1752 if (verbose == 0) 1753 return; 1754 if (rtm->rtm_version != RTM_VERSION) { 1755 (void)printf("routing message version %d not understood\n", 1756 rtm->rtm_version); 1757 return; 1758 } 1759 if (msgtypes[rtm->rtm_type]) 1760 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1761 else 1762 (void)printf("#%d: ", rtm->rtm_type); 1763 (void)printf("len %d, ", rtm->rtm_msglen); 1764 switch (rtm->rtm_type) { 1765 case RTM_IFINFO: 1766 ifm = (struct if_msghdr *)rtm; 1767 (void)printf("if# %d, %s, flags: ", ifm->ifm_index, 1768 #ifdef SMALL 1769 "" 1770 #else 1771 linkstate(ifm) 1772 #endif /* SMALL */ 1773 ); 1774 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1775 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1776 break; 1777 case RTM_NEWADDR: 1778 case RTM_DELADDR: 1779 case RTM_CHGADDR: 1780 ifam = (struct ifa_msghdr *)rtm; 1781 (void)printf("metric %d, flags: ", ifam->ifam_metric); 1782 bprintf(stdout, ifam->ifam_flags, routeflags); 1783 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1784 break; 1785 case RTM_IEEE80211: 1786 ifan = (struct if_announcemsghdr *)rtm; 1787 (void)printf("if# %d, what: ", ifan->ifan_index); 1788 switch (ifan->ifan_what) { 1789 case RTM_IEEE80211_ASSOC: 1790 printf("associate"); 1791 break; 1792 case RTM_IEEE80211_REASSOC: 1793 printf("re-associate"); 1794 break; 1795 case RTM_IEEE80211_DISASSOC: 1796 printf("disassociate"); 1797 break; 1798 case RTM_IEEE80211_SCAN: 1799 printf("scan complete"); 1800 break; 1801 case RTM_IEEE80211_JOIN: 1802 evlen = sizeof(ev.join); 1803 printf("join"); 1804 break; 1805 case RTM_IEEE80211_LEAVE: 1806 evlen = sizeof(ev.leave); 1807 printf("leave"); 1808 break; 1809 case RTM_IEEE80211_MICHAEL: 1810 evlen = sizeof(ev.michael); 1811 printf("michael"); 1812 break; 1813 case RTM_IEEE80211_REPLAY: 1814 evlen = sizeof(ev.replay); 1815 printf("replay"); 1816 break; 1817 default: 1818 evlen = 0; 1819 printf("#%d", ifan->ifan_what); 1820 break; 1821 } 1822 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1823 printf(" (truncated)\n"); 1824 break; 1825 } 1826 (void)memcpy(&ev, (ifan + 1), evlen); 1827 switch (ifan->ifan_what) { 1828 case RTM_IEEE80211_JOIN: 1829 case RTM_IEEE80211_LEAVE: 1830 printf(" mac %" PRIETHER, 1831 PRIETHER_ARGS(ev.join.iev_addr)); 1832 break; 1833 case RTM_IEEE80211_REPLAY: 1834 case RTM_IEEE80211_MICHAEL: 1835 printf(" src %" PRIETHER " dst %" PRIETHER 1836 " cipher %" PRIu8 " keyix %" PRIu8, 1837 PRIETHER_ARGS(ev.replay.iev_src), 1838 PRIETHER_ARGS(ev.replay.iev_dst), 1839 ev.replay.iev_cipher, 1840 ev.replay.iev_keyix); 1841 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1842 printf(" key rsc %#" PRIx64 1843 " frame rsc %#" PRIx64, 1844 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1845 } 1846 break; 1847 default: 1848 break; 1849 } 1850 printf("\n"); 1851 break; 1852 case RTM_IFANNOUNCE: 1853 ifan = (struct if_announcemsghdr *)rtm; 1854 (void)printf("if# %d, what: ", ifan->ifan_index); 1855 switch (ifan->ifan_what) { 1856 case IFAN_ARRIVAL: 1857 printf("arrival"); 1858 break; 1859 case IFAN_DEPARTURE: 1860 printf("departure"); 1861 break; 1862 default: 1863 printf("#%d", ifan->ifan_what); 1864 break; 1865 } 1866 printf("\n"); 1867 break; 1868 default: 1869 (void)printf("pid %d, seq %d, errno %d, flags: ", 1870 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1871 bprintf(stdout, rtm->rtm_flags, routeflags); 1872 pmsg_common(rtm); 1873 } 1874 } 1875 1876 #ifndef SMALL 1877 static int 1878 print_getmsg(struct rt_msghdr *rtm, int msglen, struct sou *soup) 1879 { 1880 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL, *mpls = NULL; 1881 struct sockaddr_dl *ifp = NULL; 1882 struct sockaddr *sa; 1883 char *cp; 1884 int i; 1885 1886 if (! shortoutput) { 1887 (void)printf(" route to: %s\n", 1888 routename(&soup->so_dst->sa, NULL, RTF_HOST)); 1889 } 1890 if (rtm->rtm_version != RTM_VERSION) { 1891 warnx("routing message version %d not understood", 1892 rtm->rtm_version); 1893 return 1; 1894 } 1895 if (rtm->rtm_msglen > msglen) { 1896 warnx("message length mismatch, in packet %d, returned %d", 1897 rtm->rtm_msglen, msglen); 1898 } 1899 if (rtm->rtm_errno) { 1900 warnx("RTM_GET: %s (errno %d)", 1901 strerror(rtm->rtm_errno), rtm->rtm_errno); 1902 return 1; 1903 } 1904 cp = ((char *)(rtm + 1)); 1905 if (rtm->rtm_addrs) 1906 for (i = 1; i; i <<= 1) 1907 if (i & rtm->rtm_addrs) { 1908 sa = (struct sockaddr *)cp; 1909 switch (i) { 1910 case RTA_DST: 1911 dst = sa; 1912 break; 1913 case RTA_GATEWAY: 1914 gate = sa; 1915 break; 1916 case RTA_NETMASK: 1917 mask = sa; 1918 break; 1919 case RTA_IFP: 1920 if (sa->sa_family == AF_LINK && 1921 ((struct sockaddr_dl *)sa)->sdl_nlen) 1922 ifp = (struct sockaddr_dl *)sa; 1923 break; 1924 case RTA_IFA: 1925 ifa = sa; 1926 break; 1927 case RTA_TAG: 1928 mpls = sa; 1929 break; 1930 } 1931 RT_ADVANCE(cp, sa); 1932 } 1933 if (dst && mask) 1934 mask->sa_family = dst->sa_family; /* XXX */ 1935 if (dst && ! shortoutput) 1936 (void)printf("destination: %s\n", 1937 routename(dst, mask, RTF_HOST)); 1938 if (mask && ! shortoutput) { 1939 int savenflag = nflag; 1940 1941 nflag = 1; 1942 (void)printf(" mask: %s\n", 1943 routename(mask, NULL, RTF_HOST)); 1944 nflag = savenflag; 1945 } 1946 if (gate && rtm->rtm_flags & RTF_GATEWAY) { 1947 const char *name; 1948 1949 name = routename(gate, NULL, RTF_HOST); 1950 if (shortoutput) { 1951 if (*name == '\0') 1952 return 1; 1953 (void)printf("%s\n", name); 1954 } else 1955 (void)printf(" gateway: %s\n", name); 1956 } 1957 if (mpls) { 1958 const char *name; 1959 name = routename(mpls, NULL, RTF_HOST); 1960 if(shortoutput) { 1961 if (*name == '\0') 1962 return 1; 1963 printf("%s\n", name); 1964 } else 1965 printf(" Tag: %s\n", name); 1966 } 1967 1968 if (ifa && ! shortoutput) 1969 (void)printf(" local addr: %s\n", 1970 routename(ifa, NULL, RTF_HOST)); 1971 if (ifp && ! shortoutput) 1972 (void)printf(" interface: %.*s\n", 1973 ifp->sdl_nlen, ifp->sdl_data); 1974 if (! shortoutput) { 1975 (void)printf(" flags: "); 1976 bprintf(stdout, rtm->rtm_flags, routeflags); 1977 } 1978 1979 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1980 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1981 1982 if (! shortoutput) { 1983 (void)printf("\n%s\n", "\ 1984 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1985 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1986 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1987 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1988 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1989 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1990 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1991 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1992 if (rtm->rtm_rmx.rmx_expire) 1993 rtm->rtm_rmx.rmx_expire -= time(0); 1994 printf("%8"PRId64"%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1995 } 1996 #undef lock 1997 #undef msec 1998 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1999 2000 if (shortoutput) 2001 return (rtm->rtm_addrs & RTF_GATEWAY) == 0; 2002 else if (verbose) 2003 pmsg_common(rtm); 2004 else if (rtm->rtm_addrs &~ RTA_IGN) { 2005 (void)printf("sockaddrs: "); 2006 bprintf(stdout, rtm->rtm_addrs, addrnames); 2007 putchar('\n'); 2008 } 2009 return 0; 2010 #undef RTA_IGN 2011 } 2012 #endif /* SMALL */ 2013 2014 void 2015 pmsg_common(struct rt_msghdr *rtm) 2016 { 2017 (void)printf("\nlocks: "); 2018 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 2019 (void)printf(" inits: "); 2020 bprintf(stdout, rtm->rtm_inits, metricnames); 2021 pmsg_addrs((char *)(rtm + 1), rtm->rtm_addrs); 2022 } 2023 2024 static void 2025 extract_addrs(const char *cp, int addrs, const struct sockaddr *sa[], int *nmfp) 2026 { 2027 int i, nmf = -1; 2028 2029 for (i = 0; i < RTAX_MAX; i++) { 2030 if ((1 << i) & addrs) { 2031 sa[i] = (const struct sockaddr *)cp; 2032 if ((i == RTAX_DST || i == RTAX_IFA) && 2033 nmf == -1) 2034 nmf = sa[i]->sa_family; 2035 RT_ADVANCE(cp, sa[i]); 2036 } else 2037 sa[i] = NULL; 2038 } 2039 2040 if (nmfp != NULL) 2041 *nmfp = nmf; 2042 } 2043 2044 static void 2045 pmsg_addrs(const char *cp, int addrs) 2046 { 2047 const struct sockaddr *sa[RTAX_MAX]; 2048 int i, nmf; 2049 2050 if (addrs != 0) { 2051 (void)printf("\nsockaddrs: "); 2052 bprintf(stdout, addrs, addrnames); 2053 (void)putchar('\n'); 2054 extract_addrs(cp, addrs, sa, &nmf); 2055 for (i = 0; i < RTAX_MAX; i++) { 2056 if (sa[i] == NULL) 2057 continue; 2058 2059 if (i == RTAX_NETMASK && sa[i]->sa_len) 2060 (void)printf(" %s", 2061 netmask_string(sa[i], -1, nmf)); 2062 else 2063 (void)printf(" %s", 2064 routename(sa[i], NULL, RTF_HOST)); 2065 } 2066 } 2067 (void)putchar('\n'); 2068 (void)fflush(stdout); 2069 } 2070 2071 static void 2072 bprintf(FILE *fp, int b, const char *f) 2073 { 2074 int i; 2075 int gotsome = 0; 2076 const uint8_t *s = (const uint8_t *)f; 2077 2078 if (b == 0) { 2079 fputs("none", fp); 2080 return; 2081 } 2082 while ((i = *s++) != 0) { 2083 if (b & (1 << (i-1))) { 2084 if (gotsome == 0) 2085 i = '<'; 2086 else 2087 i = ','; 2088 (void)putc(i, fp); 2089 gotsome = 1; 2090 for (; (i = *s) > 32; s++) 2091 (void)putc(i, fp); 2092 } else 2093 while (*s > 32) 2094 s++; 2095 } 2096 if (gotsome) 2097 (void)putc('>', fp); 2098 } 2099 2100 int 2101 keyword(const char *cp) 2102 { 2103 struct keytab *kt = keywords; 2104 2105 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 2106 kt++; 2107 return kt->kt_i; 2108 } 2109 2110 static void 2111 sodump(sup su, const char *which) 2112 { 2113 #ifdef INET6 2114 char ntop_buf[NI_MAXHOST]; 2115 #endif 2116 2117 switch (su->sa.sa_family) { 2118 case AF_INET: 2119 (void)printf("%s: inet %s; ", 2120 which, inet_ntoa(su->sin.sin_addr)); 2121 break; 2122 #ifndef SMALL 2123 case AF_APPLETALK: 2124 (void)printf("%s: atalk %d.%d; ", 2125 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 2126 break; 2127 #endif 2128 case AF_LINK: 2129 (void)printf("%s: link %s; ", 2130 which, link_ntoa(&su->sdl)); 2131 break; 2132 #ifdef INET6 2133 case AF_INET6: 2134 (void)printf("%s: inet6 %s; ", 2135 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 2136 ntop_buf, sizeof(ntop_buf))); 2137 break; 2138 #endif 2139 #ifndef SMALL 2140 case AF_ISO: 2141 (void)printf("%s: iso %s; ", 2142 which, iso_ntoa(&su->siso.siso_addr)); 2143 break; 2144 case AF_MPLS: 2145 { 2146 union mpls_shim ms; 2147 const union mpls_shim *pms; 2148 int psize = sizeof(struct sockaddr_mpls); 2149 2150 ms.s_addr = ntohl(su->smpls.smpls_addr.s_addr); 2151 printf("%s: mpls %u; ", 2152 which, ms.shim.label); 2153 2154 pms = &su->smpls.smpls_addr; 2155 while(psize < su->smpls.smpls_len) { 2156 pms++; 2157 ms.s_addr = ntohl(pms->s_addr); 2158 printf("%u; ", ms.shim.label); 2159 psize += sizeof(ms); 2160 } 2161 break; 2162 } 2163 #endif /* SMALL */ 2164 default: 2165 (void)printf("%s: (%d) %s; ", 2166 which, su->sa.sa_family, any_ntoa(&su->sa)); 2167 } 2168 (void)fflush(stdout); 2169 } 2170 2171 /* States*/ 2172 #define VIRGIN 0 2173 #define GOTONE 1 2174 #define GOTTWO 2 2175 /* Inputs */ 2176 #define DIGIT (4*0) 2177 #define END (4*1) 2178 #define DELIM (4*2) 2179 2180 static void 2181 sockaddr(const char *addr, struct sockaddr *sa) 2182 { 2183 char *cp = (char *)sa; 2184 int size = sa->sa_len; 2185 char *cplim = cp + size; 2186 int byte = 0, state = VIRGIN, new = 0; 2187 2188 (void)memset(cp, 0, size); 2189 cp++; 2190 do { 2191 if ((*addr >= '0') && (*addr <= '9')) { 2192 new = *addr - '0'; 2193 } else if ((*addr >= 'a') && (*addr <= 'f')) { 2194 new = *addr - 'a' + 10; 2195 } else if ((*addr >= 'A') && (*addr <= 'F')) { 2196 new = *addr - 'A' + 10; 2197 } else if (*addr == 0) 2198 state |= END; 2199 else 2200 state |= DELIM; 2201 addr++; 2202 switch (state /* | INPUT */) { 2203 case GOTTWO | DIGIT: 2204 *cp++ = byte; /*FALLTHROUGH*/ 2205 case VIRGIN | DIGIT: 2206 state = GOTONE; byte = new; continue; 2207 case GOTONE | DIGIT: 2208 state = GOTTWO; byte = new + (byte << 4); continue; 2209 default: /* | DELIM */ 2210 state = VIRGIN; *cp++ = byte; byte = 0; continue; 2211 case GOTONE | END: 2212 case GOTTWO | END: 2213 *cp++ = byte; /* FALLTHROUGH */ 2214 case VIRGIN | END: 2215 break; 2216 } 2217 break; 2218 } while (cp < cplim); 2219 sa->sa_len = cp - (char *)sa; 2220 } 2221
Indexes created Fri Sep 26 20:09:58 GMT 2025