route.c revision 1.120
1 /* $NetBSD: route.c,v 1.120 2010/05/12 17:56:13 christos 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 1.120 2010/05/12 17:56:13 christos 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 <arpa/inet.h> 61 #include <netdb.h> 62 63 #include <errno.h> 64 #include <unistd.h> 65 #include <stdio.h> 66 #include <ctype.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <time.h> 70 #include <paths.h> 71 #include <err.h> 72 73 #include "keywords.h" 74 #include "extern.h" 75 76 union sockunion { 77 struct sockaddr sa; 78 struct sockaddr_in sin; 79 #ifdef INET6 80 struct sockaddr_in6 sin6; 81 #endif 82 struct sockaddr_at sat; 83 struct sockaddr_dl sdl; 84 #ifndef SMALL 85 struct sockaddr_iso siso; 86 #endif /* SMALL */ 87 }; 88 89 typedef union sockunion *sup; 90 91 struct sou { 92 union sockunion so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 93 }; 94 95 static char *any_ntoa(const struct sockaddr *); 96 static const char *route_strerror(int); 97 static void set_metric(const char *, int); 98 static int newroute(int, char *const *); 99 static void inet_makenetandmask(u_int32_t, struct sockaddr_in *, struct sou *); 100 #ifdef INET6 101 static int inet6_makenetandmask(const struct sockaddr_in6 *, struct sou *); 102 #endif 103 static int getaddr(int, const char *, struct hostent **, struct sou *); 104 static int flushroutes(int, char *const [], int); 105 static int prefixlen(const char *, struct sou *); 106 #ifndef SMALL 107 static void interfaces(void); 108 static void monitor(void); 109 static int print_getmsg(struct rt_msghdr *, int, struct sou *); 110 static const char *linkstate(struct if_msghdr *); 111 #endif /* SMALL */ 112 static int rtmsg(int, int, struct sou *); 113 static void mask_addr(struct sou *); 114 static void print_rtmsg(struct rt_msghdr *, int); 115 static void pmsg_common(struct rt_msghdr *); 116 static void pmsg_addrs(const char *, int); 117 static void bprintf(FILE *, int, const char *); 118 static void sodump(sup, const char *); 119 static void sockaddr(const char *, struct sockaddr *); 120 121 int pid, rtm_addrs; 122 int sock; 123 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, Sflag; 124 int iflag, verbose, aflen = sizeof(struct sockaddr_in); 125 int locking, lockrest, debugonly, shortoutput; 126 struct rt_metrics rt_metrics; 127 u_int32_t rtm_inits; 128 short ns_nullh[] = {0,0,0}; 129 short ns_bh[] = {-1,-1,-1}; 130 131 132 void 133 usage(const char *cp) 134 { 135 136 if (cp) 137 warnx("botched keyword: %s", cp); 138 (void)fprintf(stderr, 139 "Usage: %s [ -fnqSsv ] cmd [[ -<qualifers> ] args ]\n", 140 getprogname()); 141 exit(1); 142 /* NOTREACHED */ 143 } 144 145 #define PRIETHER "02x:%02x:%02x:%02x:%02x:%02x" 146 #define PRIETHER_ARGS(__enaddr) (__enaddr)[0], (__enaddr)[1], (__enaddr)[2], \ 147 (__enaddr)[3], (__enaddr)[4], (__enaddr)[5] 148 #define ROUNDUP(a) \ 149 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 150 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 151 152 int 153 main(int argc, char * const *argv) 154 { 155 int ch; 156 157 if (argc < 2) 158 usage(NULL); 159 160 while ((ch = getopt(argc, argv, "dfnqSstv")) != -1) 161 switch (ch) { 162 case 'd': 163 debugonly = 1; 164 break; 165 case 'f': 166 doflush = 1; 167 break; 168 case 'n': 169 nflag = 1; 170 break; 171 case 'q': 172 qflag = 1; 173 break; 174 case 'S': 175 Sflag = 1; 176 break; 177 case 's': 178 shortoutput = 1; 179 break; 180 case 't': 181 tflag = 1; 182 break; 183 case 'v': 184 verbose = 1; 185 break; 186 case '?': 187 default: 188 usage(NULL); 189 /*NOTREACHED*/ 190 } 191 argc -= optind; 192 argv += optind; 193 194 pid = getpid(); 195 if (tflag) 196 sock = open("/dev/null", O_WRONLY, 0); 197 else 198 sock = socket(PF_ROUTE, SOCK_RAW, 0); 199 if (sock < 0) 200 err(EXIT_FAILURE, "socket"); 201 202 if (*argv == NULL) { 203 if (doflush) 204 ch = K_FLUSH; 205 else 206 goto no_cmd; 207 } else 208 ch = keyword(*argv); 209 210 switch (ch) { 211 #ifndef SMALL 212 case K_GET: 213 #endif /* SMALL */ 214 case K_CHANGE: 215 case K_ADD: 216 case K_DELETE: 217 if (doflush) 218 (void)flushroutes(1, argv, 0); 219 return newroute(argc, argv); 220 221 case K_SHOW: 222 show(argc, argv); 223 return 0; 224 225 #ifndef SMALL 226 case K_MONITOR: 227 monitor(); 228 return 0; 229 230 #endif /* SMALL */ 231 case K_FLUSH: 232 return flushroutes(argc, argv, 0); 233 234 case K_FLUSHALL: 235 return flushroutes(argc, argv, 1); 236 no_cmd: 237 default: 238 usage(*argv); 239 /*NOTREACHED*/ 240 } 241 } 242 243 /* 244 * Purge all entries in the routing tables not 245 * associated with network interfaces. 246 */ 247 static int 248 flushroutes(int argc, char * const argv[], int doall) 249 { 250 struct sockaddr *sa; 251 size_t needed; 252 int flags, mib[6], rlen, seqno; 253 char *buf, *next, *lim; 254 const char *afname; 255 struct rt_msghdr *rtm; 256 257 flags = 0; 258 af = AF_UNSPEC; 259 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 260 parse_show_opts(argc, argv, &af, &flags, &afname, false); 261 mib[0] = CTL_NET; 262 mib[1] = PF_ROUTE; 263 mib[2] = 0; /* protocol */ 264 mib[3] = 0; /* wildcard address family */ 265 mib[4] = NET_RT_DUMP; 266 mib[5] = 0; /* no flags */ 267 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 268 err(EXIT_FAILURE, "route-sysctl-estimate"); 269 buf = lim = NULL; 270 if (needed) { 271 if ((buf = malloc(needed)) == NULL) 272 err(EXIT_FAILURE, "malloc"); 273 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 274 err(EXIT_FAILURE, "actual retrieval of routing table"); 275 lim = buf + needed; 276 } 277 if (verbose) { 278 (void)printf("Examining routing table from sysctl\n"); 279 if (af != AF_UNSPEC) 280 printf("(address family %s)\n", afname); 281 } 282 if (needed == 0) 283 return 0; 284 seqno = 0; /* ??? */ 285 for (next = buf; next < lim; next += rtm->rtm_msglen) { 286 rtm = (struct rt_msghdr *)next; 287 sa = (struct sockaddr *)(rtm + 1); 288 if (verbose) 289 print_rtmsg(rtm, rtm->rtm_msglen); 290 if ((rtm->rtm_flags & flags) != flags) 291 continue; 292 if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC | 293 RTF_LLINFO)) && !doall) 294 continue; 295 if (af != AF_UNSPEC && sa->sa_family != af) 296 continue; 297 if (debugonly) 298 continue; 299 rtm->rtm_type = RTM_DELETE; 300 rtm->rtm_seq = seqno; 301 if ((rlen = write(sock, next, rtm->rtm_msglen)) < 0) { 302 warnx("writing to routing socket: %s", 303 route_strerror(errno)); 304 return 1; 305 } 306 if (rlen < (int)rtm->rtm_msglen) { 307 warnx("write to routing socket, got %d for rlen", rlen); 308 return 1; 309 } 310 seqno++; 311 if (qflag) 312 continue; 313 if (verbose) 314 print_rtmsg(rtm, rlen); 315 else { 316 (void)printf("%-20.20s ", 317 routename(sa, NULL, rtm->rtm_flags)); 318 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + 319 (char *)sa); 320 (void)printf("%-20.20s ", 321 routename(sa, NULL, RTF_HOST)); 322 (void)printf("done\n"); 323 } 324 } 325 free(buf); 326 return 0; 327 } 328 329 330 static char hexlist[] = "0123456789abcdef"; 331 332 static char * 333 any_ntoa(const struct sockaddr *sa) 334 { 335 static char obuf[3 * 256]; 336 const char *in; 337 char *out; 338 int len; 339 340 #if __GNUC__ > 2 341 len = sa->sa_len - offsetof(struct sockaddr, sa_data); 342 #else 343 len = sa->sa_len - ((struct sockaddr*)&sa->sa_data - sa); 344 #endif 345 in = sa->sa_data; 346 out = obuf; 347 348 do { 349 *out++ = hexlist[(*in >> 4) & 15]; 350 *out++ = hexlist[(*in++) & 15]; 351 *out++ = '.'; 352 } while (--len > 0); 353 out[-1] = '\0'; 354 return obuf; 355 } 356 357 int 358 netmask_length(struct sockaddr *nm, int family) 359 { 360 static int 361 /* number of bits in a nibble */ 362 _t[] = { 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4 }, 363 /* good nibbles are 1111, 1110, 1100, 1000, 0000 */ 364 _g[] = { 1,0,0,0,0,0,0,0,1,0,0,0,1,0,1,1 }; 365 int mask, good, zeroes, maskbytes, bit, i; 366 unsigned char *maskdata; 367 368 if (nm == NULL) 369 return 0; 370 371 mask = 0; 372 good = 1; 373 zeroes = 0; 374 375 switch (family) { 376 case AF_INET: { 377 struct sockaddr_in *nsin = (struct sockaddr_in *)nm; 378 maskdata = (unsigned char *)&nsin->sin_addr; 379 maskbytes = nsin->sin_len - 380 ((caddr_t)&nsin->sin_addr - (caddr_t)nsin); 381 break; 382 } 383 case AF_INET6: { 384 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nm; 385 maskdata = (unsigned char *)&sin6->sin6_addr; 386 maskbytes = sin6->sin6_len - 387 ((caddr_t)&sin6->sin6_addr - (caddr_t)sin6); 388 break; 389 } 390 default: 391 return 0; 392 } 393 394 /* 395 * Count the bits in the nibbles of the mask, and marking the 396 * netmask as not good (or at best, non-standard and very 397 * discouraged, in the case of AF_INET) if we find either of 398 * a nibble with non-contiguous bits, or a non-zero nibble 399 * after we've found a zero nibble. 400 */ 401 for (i = 0; i < maskbytes; i++) { 402 /* high nibble */ 403 mask += bit = _t[maskdata[i] >> 4]; 404 good &= _g[maskdata[i] >> 4]; 405 if (zeroes && bit) 406 good = 0; 407 if (bit == 0) 408 zeroes = 1; 409 /* low nibble */ 410 mask += bit = _t[maskdata[i] & 0xf]; 411 good &= _g[maskdata[i] & 0xf]; 412 if (zeroes && bit) 413 good = 0; 414 if (bit == 0) 415 zeroes = 1; 416 } 417 418 /* 419 * Always return the number of bits found, but as a negative 420 * if the mask wasn't one we like. 421 */ 422 return good ? mask : -mask; 423 } 424 425 char * 426 netmask_string(const struct sockaddr *mask, int len, int family) 427 { 428 static char smask[INET6_ADDRSTRLEN]; 429 struct sockaddr_in nsin; 430 struct sockaddr_in6 nsin6; 431 432 if (len >= 0) 433 snprintf(smask, sizeof(smask), "%d", len); 434 else { 435 switch (family) { 436 case AF_INET: 437 memset(&nsin, 0, sizeof(nsin)); 438 memcpy(&nsin, mask, mask->sa_len); 439 snprintf(smask, sizeof(smask), "%s", 440 inet_ntoa(nsin.sin_addr)); 441 break; 442 case AF_INET6: 443 memset(&nsin6, 0, sizeof(nsin6)); 444 memcpy(&nsin6, mask, mask->sa_len); 445 inet_ntop(family, &nsin6.sin6_addr, smask, 446 sizeof(smask)); 447 break; 448 default: 449 snprintf(smask, sizeof(smask), "%s", any_ntoa(mask)); 450 } 451 } 452 453 return smask; 454 } 455 456 const char * 457 routename(const struct sockaddr *sa, struct sockaddr *nm, int flags) 458 { 459 const char *cp; 460 static char line[50]; 461 struct hostent *hp; 462 static char domain[MAXHOSTNAMELEN + 1]; 463 static int first = 1; 464 struct in_addr in; 465 int nml; 466 467 if ((flags & RTF_HOST) == 0) 468 return netname(sa, nm); 469 470 if (first) { 471 first = 0; 472 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 473 (cp = strchr(domain, '.'))) 474 (void)strlcpy(domain, cp + 1, sizeof(domain)); 475 else 476 domain[0] = 0; 477 } 478 479 if (sa->sa_len == 0) 480 strlcpy(line, "default", sizeof(line)); 481 else switch (sa->sa_family) { 482 483 case AF_INET: 484 in = ((const struct sockaddr_in *)sa)->sin_addr; 485 nml = netmask_length(nm, AF_INET); 486 487 cp = 0; 488 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) { 489 if (nml == 0) 490 cp = "default"; 491 else { 492 static char notdefault[sizeof(NOTDEFSTRING)]; 493 494 snprintf(notdefault, sizeof(notdefault), 495 "0.0.0.0/%s", 496 netmask_string(nm, nml, AF_INET)); 497 cp = notdefault; 498 } 499 } 500 if (cp == 0 && !nflag) { 501 hp = gethostbyaddr((char *)&in, sizeof(struct in_addr), 502 AF_INET); 503 if (hp) { 504 char *ccp; 505 if ((ccp = strchr(hp->h_name, '.')) && 506 !strcmp(ccp + 1, domain)) 507 *ccp = '\0'; 508 cp = hp->h_name; 509 } 510 } 511 if (cp) 512 (void)strlcpy(line, cp, sizeof(line)); 513 else 514 (void)strlcpy(line, inet_ntoa(in), sizeof(line)); 515 break; 516 517 case AF_LINK: 518 return link_ntoa((const struct sockaddr_dl *)sa); 519 520 #ifdef INET6 521 case AF_INET6: 522 { 523 struct sockaddr_in6 sin6; 524 int niflags; 525 char nihost[NI_MAXHOST]; 526 527 niflags = 0; 528 if (nflag) 529 niflags |= NI_NUMERICHOST; 530 memset(&sin6, 0, sizeof(sin6)); 531 memcpy(&sin6, sa, sa->sa_len); 532 sin6.sin6_len = sizeof(struct sockaddr_in6); 533 sin6.sin6_family = AF_INET6; 534 #ifdef __KAME__ 535 if (sa->sa_len == sizeof(struct sockaddr_in6) && 536 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 537 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 538 sin6.sin6_scope_id == 0) { 539 sin6.sin6_scope_id = 540 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 541 sin6.sin6_addr.s6_addr[2] = 0; 542 sin6.sin6_addr.s6_addr[3] = 0; 543 } 544 #endif 545 nml = netmask_length(nm, AF_INET6); 546 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 547 if (nml == 0) 548 strlcpy(line, "::", sizeof(line)); 549 else 550 /* noncontiguous never happens in ipv6 */ 551 snprintf(line, sizeof(line), "::/%d", nml); 552 } 553 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 554 nihost, sizeof(nihost), NULL, 0, niflags) != 0) 555 strlcpy(line, "invalid", sizeof(line)); 556 else { 557 char *ccp; 558 if (!nflag && (ccp = strchr(nihost, '.')) && 559 strcmp(ccp + 1, domain) == 0) 560 *ccp = '\0'; 561 strlcpy(line, nihost, sizeof(line)); 562 } 563 break; 564 } 565 #endif 566 567 #ifndef SMALL 568 case AF_ISO: 569 (void)snprintf(line, sizeof line, "iso %s", 570 iso_ntoa(&((const struct sockaddr_iso *)sa)->siso_addr)); 571 break; 572 573 case AF_APPLETALK: 574 (void)snprintf(line, sizeof(line), "atalk %d.%d", 575 ((const struct sockaddr_at *)sa)->sat_addr.s_net, 576 ((const struct sockaddr_at *)sa)->sat_addr.s_node); 577 break; 578 #endif /* SMALL */ 579 580 default: 581 (void)snprintf(line, sizeof line, "(%d) %s", 582 sa->sa_family, any_ntoa(sa)); 583 break; 584 585 } 586 return line; 587 } 588 589 /* 590 * Return the name of the network whose address is given. 591 * The address is assumed to be that of a net or subnet, not a host. 592 */ 593 const char * 594 netname(const struct sockaddr *sa, struct sockaddr *nm) 595 { 596 const char *cp = 0; 597 static char line[50]; 598 struct netent *np = 0; 599 u_int32_t net, mask; 600 u_int32_t i; 601 int subnetshift, nml; 602 struct in_addr in; 603 604 switch (sa->sa_family) { 605 606 case AF_INET: 607 in = ((const struct sockaddr_in *)sa)->sin_addr; 608 i = ntohl(in.s_addr); 609 nml = netmask_length(nm, AF_INET); 610 if (i == 0) { 611 if (nml == 0) 612 cp = "default"; 613 else { 614 static char notdefault[sizeof(NOTDEFSTRING)]; 615 616 snprintf(notdefault, sizeof(notdefault), 617 "0.0.0.0/%s", 618 netmask_string(nm, nml, AF_INET)); 619 cp = notdefault; 620 } 621 } 622 else if (!nflag) { 623 if (IN_CLASSA(i)) { 624 mask = IN_CLASSA_NET; 625 subnetshift = 8; 626 } else if (IN_CLASSB(i)) { 627 mask = IN_CLASSB_NET; 628 subnetshift = 8; 629 } else { 630 mask = IN_CLASSC_NET; 631 subnetshift = 4; 632 } 633 /* 634 * If there are more bits than the standard mask 635 * would suggest, subnets must be in use. 636 * Guess at the subnet mask, assuming reasonable 637 * width subnet fields. 638 */ 639 while (i &~ mask) 640 mask = (int32_t)mask >> subnetshift; 641 net = i & mask; 642 while ((mask & 1) == 0) 643 mask >>= 1, net >>= 1; 644 np = getnetbyaddr(net, AF_INET); 645 if (np) 646 cp = np->n_name; 647 } 648 if (cp) 649 (void)strlcpy(line, cp, sizeof(line)); 650 else { 651 if (nml == 0) 652 strlcpy(line, inet_ntoa(in), sizeof(line)); 653 else if (nml < 0) { 654 snprintf(line, sizeof(line), "%s&%s", 655 inet_ntoa(in), 656 netmask_string(nm, nml, AF_INET)); 657 } else { 658 snprintf(line, sizeof(line), "%s/%d", 659 inet_ntoa(in), nml); 660 } 661 } 662 break; 663 664 case AF_LINK: 665 return link_ntoa((const struct sockaddr_dl *)sa); 666 667 #ifdef INET6 668 case AF_INET6: 669 { 670 struct sockaddr_in6 sin6; 671 int niflags; 672 673 niflags = 0; 674 if (nflag) 675 niflags |= NI_NUMERICHOST; 676 memset(&sin6, 0, sizeof(sin6)); 677 memcpy(&sin6, sa, sa->sa_len); 678 sin6.sin6_len = sizeof(struct sockaddr_in6); 679 sin6.sin6_family = AF_INET6; 680 #ifdef __KAME__ 681 if (sa->sa_len == sizeof(struct sockaddr_in6) && 682 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 683 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 684 sin6.sin6_scope_id == 0) { 685 sin6.sin6_scope_id = 686 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 687 sin6.sin6_addr.s6_addr[2] = 0; 688 sin6.sin6_addr.s6_addr[3] = 0; 689 } 690 #endif 691 nml = netmask_length(nm, AF_INET6); 692 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 693 if (nml == 0) 694 strlcpy(line, "::", sizeof(line)); 695 else 696 /* noncontiguous never happens in ipv6 */ 697 snprintf(line, sizeof(line), "::/%d", nml); 698 } 699 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 700 line, sizeof(line), NULL, 0, niflags) != 0) 701 strlcpy(line, "invalid", sizeof(line)); 702 break; 703 } 704 #endif 705 706 #ifndef SMALL 707 case AF_ISO: 708 (void)snprintf(line, sizeof line, "iso %s", 709 iso_ntoa(&((const struct sockaddr_iso *)sa)->siso_addr)); 710 break; 711 712 case AF_APPLETALK: 713 (void)snprintf(line, sizeof(line), "atalk %d.%d", 714 ((const struct sockaddr_at *)sa)->sat_addr.s_net, 715 ((const struct sockaddr_at *)sa)->sat_addr.s_node); 716 break; 717 #endif /* SMALL */ 718 719 default: 720 (void)snprintf(line, sizeof line, "af %d: %s", 721 sa->sa_family, any_ntoa(sa)); 722 break; 723 } 724 return line; 725 } 726 727 static const char * 728 route_strerror(int error) 729 { 730 731 switch (error) { 732 case ESRCH: 733 return "not in table"; 734 case EBUSY: 735 return "entry in use"; 736 case ENOBUFS: 737 return "routing table overflow"; 738 default: 739 return strerror(error); 740 } 741 } 742 743 static void 744 set_metric(const char *value, int key) 745 { 746 int flag = 0; 747 u_long noval, *valp = &noval; 748 749 switch (key) { 750 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 751 caseof(K_MTU, RTV_MTU, rmx_mtu); 752 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 753 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 754 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 755 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 756 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 757 caseof(K_RTT, RTV_RTT, rmx_rtt); 758 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 759 } 760 rtm_inits |= flag; 761 if (lockrest || locking) 762 rt_metrics.rmx_locks |= flag; 763 if (locking) 764 locking = 0; 765 *valp = strtoul(value, NULL, 0); 766 } 767 768 static int 769 newroute(int argc, char *const *argv) 770 { 771 const char *cmd, *dest = "", *gateway = ""; 772 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 773 int key; 774 struct hostent *hp = 0; 775 struct sou sou, *soup = &sou; 776 777 memset(&sou, 0, sizeof(sou)); 778 779 cmd = argv[0]; 780 af = AF_UNSPEC; 781 if (*cmd != 'g') 782 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 783 while (--argc > 0) { 784 if (**(++argv)== '-') { 785 switch (key = keyword(1 + *argv)) { 786 787 case K_SA: 788 af = PF_ROUTE; 789 aflen = sizeof(union sockunion); 790 break; 791 792 #ifndef SMALL 793 case K_ATALK: 794 af = AF_APPLETALK; 795 aflen = sizeof(struct sockaddr_at); 796 break; 797 #endif 798 799 case K_INET: 800 af = AF_INET; 801 aflen = sizeof(struct sockaddr_in); 802 break; 803 804 #ifdef INET6 805 case K_INET6: 806 af = AF_INET6; 807 aflen = sizeof(struct sockaddr_in6); 808 break; 809 #endif 810 811 case K_LINK: 812 af = AF_LINK; 813 aflen = sizeof(struct sockaddr_dl); 814 break; 815 816 #ifndef SMALL 817 case K_OSI: 818 case K_ISO: 819 af = AF_ISO; 820 aflen = sizeof(struct sockaddr_iso); 821 break; 822 #endif /* SMALL */ 823 824 case K_IFACE: 825 case K_INTERFACE: 826 iflag++; 827 break; 828 case K_NOSTATIC: 829 flags &= ~RTF_STATIC; 830 break; 831 case K_LLINFO: 832 flags |= RTF_LLINFO; 833 break; 834 case K_LOCK: 835 locking = 1; 836 break; 837 case K_LOCKREST: 838 lockrest = 1; 839 break; 840 case K_HOST: 841 forcehost++; 842 break; 843 case K_REJECT: 844 flags |= RTF_REJECT; 845 break; 846 case K_NOREJECT: 847 flags &= ~RTF_REJECT; 848 break; 849 case K_BLACKHOLE: 850 flags |= RTF_BLACKHOLE; 851 break; 852 case K_NOBLACKHOLE: 853 flags &= ~RTF_BLACKHOLE; 854 break; 855 case K_CLONED: 856 flags |= RTF_CLONED; 857 break; 858 case K_NOCLONED: 859 flags &= ~RTF_CLONED; 860 break; 861 case K_PROTO1: 862 flags |= RTF_PROTO1; 863 break; 864 case K_PROTO2: 865 flags |= RTF_PROTO2; 866 break; 867 case K_CLONING: 868 flags |= RTF_CLONING; 869 break; 870 case K_NOCLONING: 871 flags &= ~RTF_CLONING; 872 break; 873 case K_XRESOLVE: 874 flags |= RTF_XRESOLVE; 875 break; 876 case K_STATIC: 877 flags |= RTF_STATIC; 878 break; 879 case K_IFA: 880 if (!--argc) 881 usage(1+*argv); 882 (void)getaddr(RTA_IFA, *++argv, 0, soup); 883 break; 884 case K_IFP: 885 if (!--argc) 886 usage(1+*argv); 887 (void)getaddr(RTA_IFP, *++argv, 0, soup); 888 break; 889 case K_GENMASK: 890 if (!--argc) 891 usage(1+*argv); 892 (void)getaddr(RTA_GENMASK, *++argv, 0, soup); 893 break; 894 case K_GATEWAY: 895 if (!--argc) 896 usage(1+*argv); 897 (void)getaddr(RTA_GATEWAY, *++argv, 0, soup); 898 break; 899 case K_DST: 900 if (!--argc) 901 usage(1+*argv); 902 ishost = getaddr(RTA_DST, *++argv, &hp, soup); 903 dest = *argv; 904 break; 905 case K_NETMASK: 906 if (!--argc) 907 usage(1+*argv); 908 (void)getaddr(RTA_NETMASK, *++argv, 0, soup); 909 /* FALLTHROUGH */ 910 case K_NET: 911 forcenet++; 912 break; 913 case K_PREFIXLEN: 914 if (!--argc) 915 usage(1+*argv); 916 ishost = prefixlen(*++argv, soup); 917 break; 918 case K_MTU: 919 case K_HOPCOUNT: 920 case K_EXPIRE: 921 case K_RECVPIPE: 922 case K_SENDPIPE: 923 case K_SSTHRESH: 924 case K_RTT: 925 case K_RTTVAR: 926 if (!--argc) 927 usage(1+*argv); 928 set_metric(*++argv, key); 929 break; 930 default: 931 usage(1+*argv); 932 } 933 } else { 934 if ((rtm_addrs & RTA_DST) == 0) { 935 dest = *argv; 936 ishost = getaddr(RTA_DST, *argv, &hp, soup); 937 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 938 gateway = *argv; 939 (void)getaddr(RTA_GATEWAY, *argv, &hp, soup); 940 } else { 941 ret = atoi(*argv); 942 943 if (ret == 0) { 944 if (strcmp(*argv, "0") == 0) { 945 if (!qflag) { 946 warnx("%s, %s", 947 "old usage of trailing 0", 948 "assuming route to if"); 949 } 950 } else 951 usage(NULL); 952 iflag = 1; 953 continue; 954 } else if (ret > 0 && ret < 10) { 955 if (!qflag) { 956 warnx("%s, %s", 957 "old usage of trailing digit", 958 "assuming route via gateway"); 959 } 960 iflag = 0; 961 continue; 962 } 963 (void)getaddr(RTA_NETMASK, *argv, 0, soup); 964 } 965 } 966 } 967 if (forcehost && forcenet) 968 errx(EXIT_FAILURE, "-host and -net conflict"); 969 else if (forcehost) 970 ishost = 1; 971 else if (forcenet) 972 ishost = 0; 973 flags |= RTF_UP; 974 if (ishost) 975 flags |= RTF_HOST; 976 if (iflag == 0) 977 flags |= RTF_GATEWAY; 978 for (attempts = 1; ; attempts++) { 979 errno = 0; 980 if ((ret = rtmsg(*cmd, flags, soup)) == 0) 981 break; 982 if (errno != ENETUNREACH && errno != ESRCH) 983 break; 984 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 985 hp->h_addr_list++; 986 memmove(&soup->so_gate.sin.sin_addr, hp->h_addr_list[0], 987 hp->h_length); 988 } else 989 break; 990 } 991 if (*cmd == 'g') 992 return ret != 0; 993 if (!qflag) { 994 oerrno = errno; 995 (void)printf("%s %s %s", cmd, ishost? "host" : "net", dest); 996 if (*gateway) { 997 (void)printf(": gateway %s", gateway); 998 if (attempts > 1 && ret == 0 && af == AF_INET) 999 (void)printf(" (%s)", 1000 inet_ntoa(soup->so_gate.sin.sin_addr)); 1001 } 1002 if (ret == 0) 1003 (void)printf("\n"); 1004 else 1005 (void)printf(": %s\n", route_strerror(oerrno)); 1006 } 1007 return ret != 0; 1008 } 1009 1010 static void 1011 inet_makenetandmask(const u_int32_t net, struct sockaddr_in * const isin, 1012 struct sou *soup) 1013 { 1014 struct sockaddr_in *sin; 1015 u_int32_t addr, mask = 0; 1016 char *cp; 1017 1018 rtm_addrs |= RTA_NETMASK; 1019 if (net == 0) 1020 mask = addr = 0; 1021 else if (net < 128) { 1022 addr = net << IN_CLASSA_NSHIFT; 1023 mask = IN_CLASSA_NET; 1024 } else if (net < 192) { 1025 addr = net << IN_CLASSA_NSHIFT; 1026 mask = IN_CLASSB_NET; 1027 } else if (net < 224) { 1028 addr = net << IN_CLASSA_NSHIFT; 1029 mask = IN_CLASSC_NET; 1030 } else if (net < 256) { 1031 addr = net << IN_CLASSA_NSHIFT; 1032 mask = IN_CLASSD_NET; 1033 } else if (net < 49152) { /* 192 * 256 */ 1034 addr = net << IN_CLASSB_NSHIFT; 1035 mask = IN_CLASSB_NET; 1036 } else if (net < 57344) { /* 224 * 256 */ 1037 addr = net << IN_CLASSB_NSHIFT; 1038 mask = IN_CLASSC_NET; 1039 } else if (net < 65536) { 1040 addr = net << IN_CLASSB_NSHIFT; 1041 mask = IN_CLASSB_NET; 1042 } else if (net < 14680064L) { /* 224 * 65536 */ 1043 addr = net << IN_CLASSC_NSHIFT; 1044 mask = IN_CLASSC_NET; 1045 } else if (net < 16777216L) { 1046 addr = net << IN_CLASSC_NSHIFT; 1047 mask = IN_CLASSD_NET; 1048 } else { 1049 addr = net; 1050 if ((addr & IN_CLASSA_HOST) == 0) 1051 mask = IN_CLASSA_NET; 1052 else if ((addr & IN_CLASSB_HOST) == 0) 1053 mask = IN_CLASSB_NET; 1054 else if ((addr & IN_CLASSC_HOST) == 0) 1055 mask = IN_CLASSC_NET; 1056 else 1057 mask = -1; 1058 } 1059 isin->sin_addr.s_addr = htonl(addr); 1060 sin = &soup->so_mask.sin; 1061 sin->sin_addr.s_addr = htonl(mask); 1062 sin->sin_len = 0; 1063 sin->sin_family = 0; 1064 cp = (char *)(&sin->sin_addr + 1); 1065 while (*--cp == 0 && cp > (char *)sin) 1066 ; 1067 sin->sin_len = 1 + cp - (char *)sin; 1068 sin->sin_family = AF_INET; 1069 } 1070 1071 #ifdef INET6 1072 /* 1073 * XXX the function may need more improvement... 1074 */ 1075 static int 1076 inet6_makenetandmask(const struct sockaddr_in6 * const sin6, struct sou *soup) 1077 { 1078 const char *plen; 1079 struct in6_addr in6; 1080 1081 plen = NULL; 1082 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 1083 sin6->sin6_scope_id == 0) { 1084 plen = "0"; 1085 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 1086 /* aggregatable global unicast - RFC2374 */ 1087 memset(&in6, 0, sizeof(in6)); 1088 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 1089 plen = "64"; 1090 } 1091 1092 if (!plen || strcmp(plen, "128") == 0) 1093 return 1; 1094 else { 1095 rtm_addrs |= RTA_NETMASK; 1096 (void)prefixlen(plen, soup); 1097 return 0; 1098 } 1099 } 1100 #endif 1101 1102 /* 1103 * Interpret an argument as a network address of some kind, 1104 * returning 1 if a host address, 0 if a network address. 1105 */ 1106 static int 1107 getaddr(int which, const char *s, struct hostent **hpp, struct sou *soup) 1108 { 1109 sup su; 1110 struct hostent *hp; 1111 struct netent *np; 1112 u_int32_t val; 1113 char *t; 1114 int afamily; /* local copy of af so we can change it */ 1115 1116 if (af == AF_UNSPEC) { 1117 af = AF_INET; 1118 aflen = sizeof(struct sockaddr_in); 1119 } 1120 afamily = af; 1121 rtm_addrs |= which; 1122 switch (which) { 1123 case RTA_DST: 1124 su = &soup->so_dst; 1125 break; 1126 case RTA_GATEWAY: 1127 su = &soup->so_gate; 1128 break; 1129 case RTA_NETMASK: 1130 su = &soup->so_mask; 1131 break; 1132 case RTA_GENMASK: 1133 su = &soup->so_genmask; 1134 break; 1135 case RTA_IFP: 1136 su = &soup->so_ifp; 1137 afamily = AF_LINK; 1138 break; 1139 case RTA_IFA: 1140 su = &soup->so_ifa; 1141 su->sa.sa_family = af; 1142 break; 1143 default: 1144 su = NULL; 1145 usage("Internal Error"); 1146 /*NOTREACHED*/ 1147 } 1148 su->sa.sa_len = aflen; 1149 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1150 if (strcmp(s, "default") == 0) { 1151 switch (which) { 1152 case RTA_DST: 1153 forcenet++; 1154 (void)getaddr(RTA_NETMASK, s, 0, soup); 1155 break; 1156 case RTA_NETMASK: 1157 case RTA_GENMASK: 1158 su->sa.sa_len = 0; 1159 } 1160 return 0; 1161 } 1162 switch (afamily) { 1163 #ifdef INET6 1164 case AF_INET6: 1165 { 1166 struct addrinfo hints, *res; 1167 char *slash = 0; 1168 1169 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 1170 *slash = '\0'; 1171 memset(&hints, 0, sizeof(hints)); 1172 hints.ai_family = afamily; /*AF_INET6*/ 1173 hints.ai_flags = AI_NUMERICHOST; 1174 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1175 if (getaddrinfo(s, "0", &hints, &res) != 0) { 1176 hints.ai_flags = 0; 1177 if (slash) { 1178 *slash = '/'; 1179 slash = 0; 1180 } 1181 if (getaddrinfo(s, "0", &hints, &res) != 0) 1182 errx(EXIT_FAILURE, "%s: bad value", s); 1183 } 1184 if (slash) 1185 *slash = '/'; 1186 if (sizeof(su->sin6) != res->ai_addrlen) 1187 errx(EXIT_FAILURE, "%s: bad value", s); 1188 if (res->ai_next) { 1189 errx(EXIT_FAILURE, 1190 "%s: address resolved to multiple values", s); 1191 } 1192 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1193 freeaddrinfo(res); 1194 #ifdef __KAME__ 1195 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1196 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1197 su->sin6.sin6_scope_id) { 1198 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1199 htons(su->sin6.sin6_scope_id); 1200 su->sin6.sin6_scope_id = 0; 1201 } 1202 #endif 1203 if (hints.ai_flags == AI_NUMERICHOST) { 1204 if (slash) 1205 return prefixlen(slash + 1, soup); 1206 if (which == RTA_DST) 1207 return inet6_makenetandmask(&su->sin6, soup); 1208 return 0; 1209 } else 1210 return 1; 1211 } 1212 #endif 1213 1214 #ifndef SMALL 1215 case AF_OSI: 1216 su->siso.siso_addr = *iso_addr(s); 1217 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1218 const char *cp = TSEL(&su->siso); 1219 su->siso.siso_nlen = 0; 1220 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1221 su->siso.siso_len = 1 + cp - (char *)su; 1222 } 1223 return 1; 1224 #endif /* SMALL */ 1225 1226 case PF_ROUTE: 1227 su->sa.sa_len = sizeof(*su); 1228 sockaddr(s, &su->sa); 1229 return 1; 1230 1231 #ifndef SMALL 1232 case AF_APPLETALK: 1233 t = strchr (s, '.'); 1234 if (!t) { 1235 badataddr: 1236 errx(EXIT_FAILURE, "bad address: %s", s); 1237 } 1238 val = atoi (s); 1239 if (val > 65535) 1240 goto badataddr; 1241 su->sat.sat_addr.s_net = val; 1242 val = atoi (t); 1243 if (val > 256) 1244 goto badataddr; 1245 su->sat.sat_addr.s_node = val; 1246 rtm_addrs |= RTA_NETMASK; 1247 return(forcehost || su->sat.sat_addr.s_node != 0); 1248 #endif 1249 1250 case AF_LINK: 1251 link_addr(s, &su->sdl); 1252 return 1; 1253 1254 case AF_INET: 1255 default: 1256 break; 1257 } 1258 1259 if (hpp == NULL) 1260 hpp = &hp; 1261 *hpp = NULL; 1262 1263 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 1264 *t = '\0'; 1265 if (forcenet == 0) { 1266 if ((val = inet_addr(s)) != INADDR_NONE) { 1267 inet_makenetandmask(htonl(val), &su->sin, soup); 1268 return prefixlen(&t[1], soup); 1269 } 1270 } else { 1271 if ((val = inet_network(s)) != INADDR_NONE) { 1272 inet_makenetandmask(val, &su->sin, soup); 1273 return prefixlen(&t[1], soup); 1274 } 1275 } 1276 *t = '/'; 1277 } 1278 if (inet_aton(s, &su->sin.sin_addr) && 1279 (which != RTA_DST || forcenet == 0)) { 1280 val = su->sin.sin_addr.s_addr; 1281 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1282 return 1; 1283 else { 1284 val = ntohl(val); 1285 goto netdone; 1286 } 1287 } 1288 if ((val = inet_network(s)) != INADDR_NONE || 1289 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1290 netdone: 1291 if (which == RTA_DST) 1292 inet_makenetandmask(val, &su->sin, soup); 1293 return 0; 1294 } 1295 hp = gethostbyname(s); 1296 if (hp) { 1297 *hpp = hp; 1298 su->sin.sin_family = hp->h_addrtype; 1299 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1300 return 1; 1301 } 1302 errx(EXIT_FAILURE, "%s: bad value", s); 1303 /*NOTREACHED*/ 1304 } 1305 1306 int 1307 prefixlen(const char *s, struct sou *soup) 1308 { 1309 int len = atoi(s), q, r; 1310 int max; 1311 1312 switch (af) { 1313 case AF_INET: 1314 max = sizeof(struct in_addr) * 8; 1315 break; 1316 #ifdef INET6 1317 case AF_INET6: 1318 max = sizeof(struct in6_addr) * 8; 1319 break; 1320 #endif 1321 default: 1322 errx(EXIT_FAILURE, "prefixlen is not supported with af %d", af); 1323 /*NOTREACHED*/ 1324 } 1325 1326 rtm_addrs |= RTA_NETMASK; 1327 if (len < -1 || len > max) 1328 errx(EXIT_FAILURE, "%s: bad value", s); 1329 1330 q = len >> 3; 1331 r = len & 7; 1332 switch (af) { 1333 case AF_INET: 1334 memset(&soup->so_mask, 0, sizeof(soup->so_mask)); 1335 soup->so_mask.sin.sin_family = AF_INET; 1336 soup->so_mask.sin.sin_len = sizeof(struct sockaddr_in); 1337 soup->so_mask.sin.sin_addr.s_addr = (len == 0 ? 0 1338 : htonl(0xffffffff << (32 - len))); 1339 break; 1340 #ifdef INET6 1341 case AF_INET6: 1342 soup->so_mask.sin6.sin6_family = AF_INET6; 1343 soup->so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1344 memset(&soup->so_mask.sin6.sin6_addr, 0, 1345 sizeof(soup->so_mask.sin6.sin6_addr)); 1346 if (q > 0) 1347 memset(&soup->so_mask.sin6.sin6_addr, 0xff, q); 1348 if (r > 0) 1349 *((u_char *)&soup->so_mask.sin6.sin6_addr + q) = 1350 (0xff00 >> r) & 0xff; 1351 break; 1352 #endif 1353 } 1354 return len == max; 1355 } 1356 1357 #ifndef SMALL 1358 static void 1359 interfaces(void) 1360 { 1361 size_t needed; 1362 int mib[6]; 1363 char *buf, *lim, *next; 1364 struct rt_msghdr *rtm; 1365 1366 mib[0] = CTL_NET; 1367 mib[1] = PF_ROUTE; 1368 mib[2] = 0; /* protocol */ 1369 mib[3] = 0; /* wildcard address family */ 1370 mib[4] = NET_RT_IFLIST; 1371 mib[5] = 0; /* no flags */ 1372 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1373 err(EXIT_FAILURE, "route-sysctl-estimate"); 1374 if (needed) { 1375 if ((buf = malloc(needed)) == NULL) 1376 err(EXIT_FAILURE, "malloc"); 1377 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 1378 err(EXIT_FAILURE, 1379 "actual retrieval of interface table"); 1380 } 1381 lim = buf + needed; 1382 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1383 rtm = (struct rt_msghdr *)next; 1384 print_rtmsg(rtm, rtm->rtm_msglen); 1385 } 1386 free(buf); 1387 } 1388 } 1389 1390 static void 1391 monitor(void) 1392 { 1393 int n; 1394 union { 1395 char msg[2048]; 1396 struct rt_msghdr hdr; 1397 } u; 1398 1399 verbose = 1; 1400 if (debugonly) { 1401 interfaces(); 1402 exit(0); 1403 } 1404 for(;;) { 1405 time_t now; 1406 n = read(sock, &u, sizeof(u)); 1407 now = time(NULL); 1408 (void)printf("got message of size %d on %s", n, ctime(&now)); 1409 print_rtmsg(&u.hdr, n); 1410 } 1411 } 1412 1413 #endif /* SMALL */ 1414 1415 1416 struct { 1417 struct rt_msghdr m_rtm; 1418 char m_space[512]; 1419 } m_rtmsg; 1420 1421 static int 1422 rtmsg(int cmd, int flags, struct sou *soup) 1423 { 1424 static int seq; 1425 int rlen; 1426 char *cp = m_rtmsg.m_space; 1427 int l; 1428 1429 #define NEXTADDR(w, u) \ 1430 if (rtm_addrs & (w)) {\ 1431 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1432 if (verbose && ! shortoutput) sodump(&(u),#u);\ 1433 } 1434 1435 errno = 0; 1436 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1437 if (cmd == 'a') 1438 cmd = RTM_ADD; 1439 else if (cmd == 'c') 1440 cmd = RTM_CHANGE; 1441 else if (cmd == 'g') { 1442 #ifdef SMALL 1443 return -1; 1444 #else /* SMALL */ 1445 cmd = RTM_GET; 1446 if (soup->so_ifp.sa.sa_family == AF_UNSPEC) { 1447 soup->so_ifp.sa.sa_family = AF_LINK; 1448 soup->so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1449 rtm_addrs |= RTA_IFP; 1450 } 1451 #endif /* SMALL */ 1452 } else 1453 cmd = RTM_DELETE; 1454 #define rtm m_rtmsg.m_rtm 1455 rtm.rtm_type = cmd; 1456 rtm.rtm_flags = flags; 1457 rtm.rtm_version = RTM_VERSION; 1458 rtm.rtm_seq = ++seq; 1459 rtm.rtm_addrs = rtm_addrs; 1460 rtm.rtm_rmx = rt_metrics; 1461 rtm.rtm_inits = rtm_inits; 1462 1463 if (rtm_addrs & RTA_NETMASK) 1464 mask_addr(soup); 1465 NEXTADDR(RTA_DST, soup->so_dst); 1466 NEXTADDR(RTA_GATEWAY, soup->so_gate); 1467 NEXTADDR(RTA_NETMASK, soup->so_mask); 1468 NEXTADDR(RTA_GENMASK, soup->so_genmask); 1469 NEXTADDR(RTA_IFP, soup->so_ifp); 1470 NEXTADDR(RTA_IFA, soup->so_ifa); 1471 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1472 if (verbose && ! shortoutput) { 1473 if (rtm_addrs) 1474 putchar('\n'); 1475 print_rtmsg(&rtm, l); 1476 } 1477 if (debugonly) 1478 return 0; 1479 if ((rlen = write(sock, (char *)&m_rtmsg, l)) < 0) { 1480 warnx("writing to routing socket: %s", route_strerror(errno)); 1481 return -1; 1482 } 1483 if (rlen < l) { 1484 warnx("write to routing socket, got %d for rlen", rlen); 1485 return 1; 1486 } 1487 #ifndef SMALL 1488 if (cmd == RTM_GET) { 1489 do { 1490 l = read(sock, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1491 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1492 if (l < 0) 1493 err(EXIT_FAILURE, "read from routing socket"); 1494 else 1495 return print_getmsg(&rtm, l, soup); 1496 } 1497 #endif /* SMALL */ 1498 #undef rtm 1499 return 0; 1500 } 1501 1502 static void 1503 mask_addr(struct sou *soup) 1504 { 1505 int olen = soup->so_mask.sa.sa_len; 1506 char *cp1 = olen + (char *)&soup->so_mask, *cp2; 1507 1508 for (soup->so_mask.sa.sa_len = 0; cp1 > (char *)&soup->so_mask; ) 1509 if (*--cp1 != 0) { 1510 soup->so_mask.sa.sa_len = 1 + cp1 - (char *)&soup->so_mask; 1511 break; 1512 } 1513 if ((rtm_addrs & RTA_DST) == 0) 1514 return; 1515 switch (soup->so_dst.sa.sa_family) { 1516 case AF_INET: 1517 #ifdef INET6 1518 case AF_INET6: 1519 #endif 1520 #ifndef SMALL 1521 case AF_APPLETALK: 1522 #endif /* SMALL */ 1523 case 0: 1524 return; 1525 #ifndef SMALL 1526 case AF_ISO: 1527 olen = MIN(soup->so_dst.siso.siso_nlen, 1528 MAX(soup->so_mask.sa.sa_len - 6, 0)); 1529 break; 1530 #endif /* SMALL */ 1531 } 1532 cp1 = soup->so_mask.sa.sa_len + 1 + (char *)&soup->so_dst; 1533 cp2 = soup->so_dst.sa.sa_len + 1 + (char *)&soup->so_dst; 1534 while (cp2 > cp1) 1535 *--cp2 = 0; 1536 cp2 = soup->so_mask.sa.sa_len + 1 + (char *)&soup->so_mask; 1537 while (cp1 > soup->so_dst.sa.sa_data) 1538 *--cp1 &= *--cp2; 1539 #ifndef SMALL 1540 switch (soup->so_dst.sa.sa_family) { 1541 case AF_ISO: 1542 soup->so_dst.siso.siso_nlen = olen; 1543 break; 1544 } 1545 #endif /* SMALL */ 1546 } 1547 1548 const char *msgtypes[] = { 1549 "", 1550 "RTM_ADD: Add Route", 1551 "RTM_DELETE: Delete Route", 1552 "RTM_CHANGE: Change Metrics or flags", 1553 "RTM_GET: Report Metrics", 1554 "RTM_LOSING: Kernel Suspects Partitioning", 1555 "RTM_REDIRECT: Told to use different route", 1556 "RTM_MISS: Lookup failed on this address", 1557 "RTM_LOCK: fix specified metrics", 1558 "RTM_OLDADD: caused by SIOCADDRT", 1559 "RTM_OLDDEL: caused by SIOCDELRT", 1560 "RTM_RESOLVE: Route created by cloning", 1561 "RTM_NEWADDR: address being added to iface", 1562 "RTM_DELADDR: address being removed from iface", 1563 "RTM_OIFINFO: iface status change (pre-1.5)", 1564 "RTM_IFINFO: iface status change", 1565 "RTM_IFANNOUNCE: iface arrival/departure", 1566 "RTM_IEEE80211: IEEE80211 wireless event", 1567 0, 1568 }; 1569 1570 const char metricnames[] = 1571 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1572 const char routeflags[] = 1573 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1574 const char ifnetflags[] = 1575 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1576 const char addrnames[] = 1577 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1578 1579 1580 #ifndef SMALL 1581 static const char * 1582 linkstate(struct if_msghdr *ifm) 1583 { 1584 static char buf[64]; 1585 1586 switch (ifm->ifm_data.ifi_link_state) { 1587 case LINK_STATE_UNKNOWN: 1588 return "carrier: unknown"; 1589 case LINK_STATE_DOWN: 1590 return "carrier: no carrier"; 1591 case LINK_STATE_UP: 1592 return "carrier: active"; 1593 default: 1594 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1595 ifm->ifm_data.ifi_link_state); 1596 return buf; 1597 } 1598 } 1599 #endif /* SMALL */ 1600 1601 static void 1602 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1603 { 1604 struct if_msghdr *ifm; 1605 struct ifa_msghdr *ifam; 1606 struct if_announcemsghdr *ifan; 1607 union { 1608 struct ieee80211_join_event join; 1609 struct ieee80211_leave_event leave; 1610 struct ieee80211_replay_event replay; 1611 struct ieee80211_michael_event michael; 1612 } ev; 1613 size_t evlen = 0; 1614 1615 if (verbose == 0) 1616 return; 1617 if (rtm->rtm_version != RTM_VERSION) { 1618 (void)printf("routing message version %d not understood\n", 1619 rtm->rtm_version); 1620 return; 1621 } 1622 if (msgtypes[rtm->rtm_type]) 1623 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1624 else 1625 (void)printf("#%d: ", rtm->rtm_type); 1626 (void)printf("len %d, ", rtm->rtm_msglen); 1627 switch (rtm->rtm_type) { 1628 case RTM_IFINFO: 1629 ifm = (struct if_msghdr *)rtm; 1630 (void)printf("if# %d, %s, flags: ", ifm->ifm_index, 1631 #ifdef SMALL 1632 "" 1633 #else 1634 linkstate(ifm) 1635 #endif /* SMALL */ 1636 ); 1637 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1638 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1639 break; 1640 case RTM_NEWADDR: 1641 case RTM_DELADDR: 1642 ifam = (struct ifa_msghdr *)rtm; 1643 (void)printf("metric %d, flags: ", ifam->ifam_metric); 1644 bprintf(stdout, ifam->ifam_flags, routeflags); 1645 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1646 break; 1647 case RTM_IEEE80211: 1648 ifan = (struct if_announcemsghdr *)rtm; 1649 (void)printf("if# %d, what: ", ifan->ifan_index); 1650 switch (ifan->ifan_what) { 1651 case RTM_IEEE80211_ASSOC: 1652 printf("associate"); 1653 break; 1654 case RTM_IEEE80211_REASSOC: 1655 printf("re-associate"); 1656 break; 1657 case RTM_IEEE80211_DISASSOC: 1658 printf("disassociate"); 1659 break; 1660 case RTM_IEEE80211_SCAN: 1661 printf("scan complete"); 1662 break; 1663 case RTM_IEEE80211_JOIN: 1664 evlen = sizeof(ev.join); 1665 printf("join"); 1666 break; 1667 case RTM_IEEE80211_LEAVE: 1668 evlen = sizeof(ev.leave); 1669 printf("leave"); 1670 break; 1671 case RTM_IEEE80211_MICHAEL: 1672 evlen = sizeof(ev.michael); 1673 printf("michael"); 1674 break; 1675 case RTM_IEEE80211_REPLAY: 1676 evlen = sizeof(ev.replay); 1677 printf("replay"); 1678 break; 1679 default: 1680 evlen = 0; 1681 printf("#%d", ifan->ifan_what); 1682 break; 1683 } 1684 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1685 printf(" (truncated)\n"); 1686 break; 1687 } 1688 (void)memcpy(&ev, (ifan + 1), evlen); 1689 switch (ifan->ifan_what) { 1690 case RTM_IEEE80211_JOIN: 1691 case RTM_IEEE80211_LEAVE: 1692 printf(" mac %" PRIETHER, 1693 PRIETHER_ARGS(ev.join.iev_addr)); 1694 break; 1695 case RTM_IEEE80211_REPLAY: 1696 case RTM_IEEE80211_MICHAEL: 1697 printf(" src %" PRIETHER " dst %" PRIETHER 1698 " cipher %" PRIu8 " keyix %" PRIu8, 1699 PRIETHER_ARGS(ev.replay.iev_src), 1700 PRIETHER_ARGS(ev.replay.iev_dst), 1701 ev.replay.iev_cipher, 1702 ev.replay.iev_keyix); 1703 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1704 printf(" key rsc %#" PRIx64 1705 " frame rsc %#" PRIx64, 1706 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1707 } 1708 break; 1709 default: 1710 break; 1711 } 1712 printf("\n"); 1713 break; 1714 case RTM_IFANNOUNCE: 1715 ifan = (struct if_announcemsghdr *)rtm; 1716 (void)printf("if# %d, what: ", ifan->ifan_index); 1717 switch (ifan->ifan_what) { 1718 case IFAN_ARRIVAL: 1719 printf("arrival"); 1720 break; 1721 case IFAN_DEPARTURE: 1722 printf("departure"); 1723 break; 1724 default: 1725 printf("#%d", ifan->ifan_what); 1726 break; 1727 } 1728 printf("\n"); 1729 break; 1730 default: 1731 (void)printf("pid %d, seq %d, errno %d, flags: ", 1732 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1733 bprintf(stdout, rtm->rtm_flags, routeflags); 1734 pmsg_common(rtm); 1735 } 1736 } 1737 1738 #ifndef SMALL 1739 static int 1740 print_getmsg(struct rt_msghdr *rtm, int msglen, struct sou *soup) 1741 { 1742 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1743 struct sockaddr_dl *ifp = NULL; 1744 struct sockaddr *sa; 1745 char *cp; 1746 int i; 1747 1748 if (! shortoutput) 1749 (void)printf(" route to: %s\n", 1750 routename(&soup->so_dst.sa, NULL, RTF_HOST)); 1751 if (rtm->rtm_version != RTM_VERSION) { 1752 warnx("routing message version %d not understood", 1753 rtm->rtm_version); 1754 return 1; 1755 } 1756 if (rtm->rtm_msglen > msglen) { 1757 warnx("message length mismatch, in packet %d, returned %d", 1758 rtm->rtm_msglen, msglen); 1759 } 1760 if (rtm->rtm_errno) { 1761 warnx("RTM_GET: %s (errno %d)", 1762 strerror(rtm->rtm_errno), rtm->rtm_errno); 1763 return 1; 1764 } 1765 cp = ((char *)(rtm + 1)); 1766 if (rtm->rtm_addrs) 1767 for (i = 1; i; i <<= 1) 1768 if (i & rtm->rtm_addrs) { 1769 sa = (struct sockaddr *)cp; 1770 switch (i) { 1771 case RTA_DST: 1772 dst = sa; 1773 break; 1774 case RTA_GATEWAY: 1775 gate = sa; 1776 break; 1777 case RTA_NETMASK: 1778 mask = sa; 1779 break; 1780 case RTA_IFP: 1781 if (sa->sa_family == AF_LINK && 1782 ((struct sockaddr_dl *)sa)->sdl_nlen) 1783 ifp = (struct sockaddr_dl *)sa; 1784 break; 1785 case RTA_IFA: 1786 ifa = sa; 1787 break; 1788 } 1789 ADVANCE(cp, sa); 1790 } 1791 if (dst && mask) 1792 mask->sa_family = dst->sa_family; /* XXX */ 1793 if (dst && ! shortoutput) 1794 (void)printf("destination: %s\n", 1795 routename(dst, mask, RTF_HOST)); 1796 if (mask && ! shortoutput) { 1797 int savenflag = nflag; 1798 1799 nflag = 1; 1800 (void)printf(" mask: %s\n", 1801 routename(mask, NULL, RTF_HOST)); 1802 nflag = savenflag; 1803 } 1804 if (gate && rtm->rtm_flags & RTF_GATEWAY) { 1805 const char *name; 1806 1807 name = routename(gate, NULL, RTF_HOST); 1808 if (shortoutput) { 1809 if (*name == '\0') 1810 return 1; 1811 (void)printf("%s\n", name); 1812 } else 1813 (void)printf(" gateway: %s\n", name); 1814 } 1815 if (ifa && ! shortoutput) 1816 (void)printf(" local addr: %s\n", 1817 routename(ifa, NULL, RTF_HOST)); 1818 if (ifp && ! shortoutput) 1819 (void)printf(" interface: %.*s\n", 1820 ifp->sdl_nlen, ifp->sdl_data); 1821 if (! shortoutput) { 1822 (void)printf(" flags: "); 1823 bprintf(stdout, rtm->rtm_flags, routeflags); 1824 } 1825 1826 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1827 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1828 1829 if (! shortoutput) { 1830 (void)printf("\n%s\n", "\ 1831 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1832 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1833 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1834 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1835 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1836 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1837 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1838 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1839 if (rtm->rtm_rmx.rmx_expire) 1840 rtm->rtm_rmx.rmx_expire -= time(0); 1841 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1842 } 1843 #undef lock 1844 #undef msec 1845 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1846 1847 if (shortoutput) 1848 return (rtm->rtm_addrs & RTF_GATEWAY) == 0; 1849 else if (verbose) 1850 pmsg_common(rtm); 1851 else if (rtm->rtm_addrs &~ RTA_IGN) { 1852 (void)printf("sockaddrs: "); 1853 bprintf(stdout, rtm->rtm_addrs, addrnames); 1854 putchar('\n'); 1855 } 1856 return 0; 1857 #undef RTA_IGN 1858 } 1859 #endif /* SMALL */ 1860 1861 void 1862 pmsg_common(struct rt_msghdr *rtm) 1863 { 1864 (void)printf("\nlocks: "); 1865 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1866 (void)printf(" inits: "); 1867 bprintf(stdout, rtm->rtm_inits, metricnames); 1868 pmsg_addrs((char *)(rtm + 1), rtm->rtm_addrs); 1869 } 1870 1871 static void 1872 extract_addrs(const char *cp, int addrs, const struct sockaddr *sa[], int *nmfp) 1873 { 1874 int i, nmf = -1; 1875 1876 for (i = 0; i < RTAX_MAX; i++) { 1877 if ((1 << i) & addrs) { 1878 sa[i] = (const struct sockaddr *)cp; 1879 if ((i == RTAX_DST || i == RTAX_IFA) && 1880 nmf == -1) 1881 nmf = sa[i]->sa_family; 1882 ADVANCE(cp, sa[i]); 1883 } else 1884 sa[i] = NULL; 1885 } 1886 1887 if (nmfp != NULL) 1888 *nmfp = nmf; 1889 } 1890 1891 static void 1892 pmsg_addrs(const char *cp, int addrs) 1893 { 1894 const struct sockaddr *sa[RTAX_MAX]; 1895 int i, nmf; 1896 1897 if (addrs != 0) { 1898 (void)printf("\nsockaddrs: "); 1899 bprintf(stdout, addrs, addrnames); 1900 (void)putchar('\n'); 1901 extract_addrs(cp, addrs, sa, &nmf); 1902 for (i = 0; i < RTAX_MAX; i++) { 1903 if (sa[i] == NULL) 1904 continue; 1905 1906 if (i == RTAX_NETMASK && sa[i]->sa_len) 1907 (void)printf(" %s", 1908 netmask_string(sa[i], -1, nmf)); 1909 else 1910 (void)printf(" %s", 1911 routename(sa[i], NULL, RTF_HOST)); 1912 } 1913 } 1914 (void)putchar('\n'); 1915 (void)fflush(stdout); 1916 } 1917 1918 static void 1919 bprintf(FILE *fp, int b, const char *f) 1920 { 1921 int i; 1922 int gotsome = 0; 1923 const uint8_t *s = (const uint8_t *)f; 1924 1925 if (b == 0) 1926 return; 1927 while ((i = *s++) != 0) { 1928 if (b & (1 << (i-1))) { 1929 if (gotsome == 0) 1930 i = '<'; 1931 else 1932 i = ','; 1933 (void)putc(i, fp); 1934 gotsome = 1; 1935 for (; (i = *s) > 32; s++) 1936 (void)putc(i, fp); 1937 } else 1938 while (*s > 32) 1939 s++; 1940 } 1941 if (gotsome) 1942 (void)putc('>', fp); 1943 } 1944 1945 int 1946 keyword(const char *cp) 1947 { 1948 struct keytab *kt = keywords; 1949 1950 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1951 kt++; 1952 return kt->kt_i; 1953 } 1954 1955 static void 1956 sodump(sup su, const char *which) 1957 { 1958 #ifdef INET6 1959 char ntop_buf[NI_MAXHOST]; 1960 #endif 1961 1962 switch (su->sa.sa_family) { 1963 case AF_INET: 1964 (void)printf("%s: inet %s; ", 1965 which, inet_ntoa(su->sin.sin_addr)); 1966 break; 1967 #ifndef SMALL 1968 case AF_APPLETALK: 1969 (void)printf("%s: atalk %d.%d; ", 1970 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1971 break; 1972 #endif 1973 case AF_LINK: 1974 (void)printf("%s: link %s; ", 1975 which, link_ntoa(&su->sdl)); 1976 break; 1977 #ifdef INET6 1978 case AF_INET6: 1979 (void)printf("%s: inet6 %s; ", 1980 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 1981 ntop_buf, sizeof(ntop_buf))); 1982 break; 1983 #endif 1984 #ifndef SMALL 1985 case AF_ISO: 1986 (void)printf("%s: iso %s; ", 1987 which, iso_ntoa(&su->siso.siso_addr)); 1988 break; 1989 #endif /* SMALL */ 1990 default: 1991 (void)printf("%s: (%d) %s; ", 1992 which, su->sa.sa_family, any_ntoa(&su->sa)); 1993 } 1994 (void)fflush(stdout); 1995 } 1996 1997 /* States*/ 1998 #define VIRGIN 0 1999 #define GOTONE 1 2000 #define GOTTWO 2 2001 /* Inputs */ 2002 #define DIGIT (4*0) 2003 #define END (4*1) 2004 #define DELIM (4*2) 2005 2006 static void 2007 sockaddr(const char *addr, struct sockaddr *sa) 2008 { 2009 char *cp = (char *)sa; 2010 int size = sa->sa_len; 2011 char *cplim = cp + size; 2012 int byte = 0, state = VIRGIN, new = 0; 2013 2014 (void)memset(cp, 0, size); 2015 cp++; 2016 do { 2017 if ((*addr >= '0') && (*addr <= '9')) { 2018 new = *addr - '0'; 2019 } else if ((*addr >= 'a') && (*addr <= 'f')) { 2020 new = *addr - 'a' + 10; 2021 } else if ((*addr >= 'A') && (*addr <= 'F')) { 2022 new = *addr - 'A' + 10; 2023 } else if (*addr == 0) 2024 state |= END; 2025 else 2026 state |= DELIM; 2027 addr++; 2028 switch (state /* | INPUT */) { 2029 case GOTTWO | DIGIT: 2030 *cp++ = byte; /*FALLTHROUGH*/ 2031 case VIRGIN | DIGIT: 2032 state = GOTONE; byte = new; continue; 2033 case GOTONE | DIGIT: 2034 state = GOTTWO; byte = new + (byte << 4); continue; 2035 default: /* | DELIM */ 2036 state = VIRGIN; *cp++ = byte; byte = 0; continue; 2037 case GOTONE | END: 2038 case GOTTWO | END: 2039 *cp++ = byte; /* FALLTHROUGH */ 2040 case VIRGIN | END: 2041 break; 2042 } 2043 break; 2044 } while (cp < cplim); 2045 sa->sa_len = cp - (char *)sa; 2046 } 2047
Indexes created Mon Sep 29 21:09:56 GMT 2025