route.c revision 1.87
1 /* $NetBSD: route.c,v 1.87 2005/08/09 21:25:42 ginsbach 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\n\ 35 The Regents of the University of California. All rights reserved.\n"); 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 1.87 2005/08/09 21:25:42 ginsbach 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 <netns/ns.h> 60 #include <netiso/iso.h> 61 #include <netccitt/x25.h> 62 #include <arpa/inet.h> 63 #include <netdb.h> 64 65 #include <errno.h> 66 #include <unistd.h> 67 #include <stdio.h> 68 #include <ctype.h> 69 #include <stdlib.h> 70 #include <string.h> 71 #include <time.h> 72 #include <paths.h> 73 #include <err.h> 74 75 #include "keywords.h" 76 #include "extern.h" 77 78 typedef union sockunion *sup; 79 80 static char *any_ntoa(const struct sockaddr *); 81 static void set_metric(char *, int); 82 static int newroute(int, char **); 83 static void inet_makenetandmask(u_int32_t, struct sockaddr_in *); 84 #ifdef INET6 85 static int inet6_makenetandmask(struct sockaddr_in6 *); 86 #endif 87 static int getaddr(int, char *, struct hostent **); 88 static int flushroutes(int, char *[], int); 89 #ifndef SMALL 90 static int prefixlen(const char *); 91 static int x25_makemask(void); 92 static void interfaces(void); 93 static void monitor(void); 94 static void print_getmsg(struct rt_msghdr *, int); 95 static const char *linkstate(struct if_msghdr *); 96 #endif /* SMALL */ 97 static int rtmsg(int, int ); 98 static void mask_addr(void); 99 static void print_rtmsg(struct rt_msghdr *, int); 100 static void pmsg_common(struct rt_msghdr *); 101 static void pmsg_addrs(char *, int); 102 static void bprintf(FILE *, int, u_char *); 103 static void sodump(sup, const char *); 104 static void sockaddr(char *, struct sockaddr *); 105 106 union sockunion { 107 struct sockaddr sa; 108 struct sockaddr_in sin; 109 #ifdef INET6 110 struct sockaddr_in6 sin6; 111 #endif 112 struct sockaddr_at sat; 113 struct sockaddr_dl sdl; 114 #ifndef SMALL 115 struct sockaddr_ns sns; 116 struct sockaddr_iso siso; 117 struct sockaddr_x25 sx25; 118 #endif /* SMALL */ 119 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 120 121 int pid, rtm_addrs; 122 int sock; 123 int forcehost, forcenet, doflush, nflag, af, qflag, tflag; 124 int iflag, verbose, aflen = sizeof(struct sockaddr_in); 125 int locking, lockrest, debugonly, shortoutput, rv; 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 [ -fnqvs ] 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 **argv) 154 { 155 int ch; 156 157 if (argc < 2) 158 usage(NULL); 159 160 while ((ch = getopt(argc, argv, "fnqvdts")) != -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 shortoutput = 1; 176 break; 177 case 't': 178 tflag = 1; 179 break; 180 case 'v': 181 verbose = 1; 182 break; 183 case '?': 184 default: 185 usage(NULL); 186 /*NOTREACHED*/ 187 } 188 argc -= optind; 189 argv += optind; 190 191 pid = getpid(); 192 if (tflag) 193 sock = open("/dev/null", O_WRONLY, 0); 194 else 195 sock = socket(PF_ROUTE, SOCK_RAW, 0); 196 if (sock < 0) 197 err(1, "socket"); 198 199 if (*argv == NULL) { 200 if (doflush) 201 ch = K_FLUSH; 202 else 203 goto no_cmd; 204 } else 205 ch = keyword(*argv); 206 207 switch (ch) { 208 #ifndef SMALL 209 case K_GET: 210 #endif /* SMALL */ 211 case K_CHANGE: 212 case K_ADD: 213 case K_DELETE: 214 if (doflush) 215 (void)flushroutes(1, argv, 0); 216 return newroute(argc, argv); 217 218 case K_SHOW: 219 show(argc, argv); 220 return 0; 221 222 #ifndef SMALL 223 case K_MONITOR: 224 monitor(); 225 return 0; 226 227 #endif /* SMALL */ 228 case K_FLUSH: 229 return flushroutes(argc, argv, 0); 230 231 case K_FLUSHALL: 232 return flushroutes(argc, argv, 1); 233 no_cmd: 234 default: 235 usage(*argv); 236 /*NOTREACHED*/ 237 } 238 } 239 240 /* 241 * Purge all entries in the routing tables not 242 * associated with network interfaces. 243 */ 244 static int 245 flushroutes(int argc, char *argv[], int doall) 246 { 247 size_t needed; 248 int mib[6], rlen, seqno; 249 char *buf, *next, *lim; 250 struct rt_msghdr *rtm; 251 252 af = 0; 253 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 254 if (argc > 1) { 255 argv++; 256 if (argc == 2 && **argv == '-') 257 switch (keyword(*argv + 1)) { 258 case K_INET: 259 af = AF_INET; 260 break; 261 #ifdef INET6 262 case K_INET6: 263 af = AF_INET6; 264 break; 265 #endif 266 #ifndef SMALL 267 case K_ATALK: 268 af = AF_APPLETALK; 269 break; 270 case K_XNS: 271 af = AF_NS; 272 break; 273 #endif /* SMALL */ 274 case K_LINK: 275 af = AF_LINK; 276 break; 277 #ifndef SMALL 278 case K_ISO: 279 case K_OSI: 280 af = AF_ISO; 281 break; 282 case K_X25: 283 af = AF_CCITT; 284 #endif /* SMALL */ 285 default: 286 goto bad; 287 } else 288 bad: usage(*argv); 289 } 290 mib[0] = CTL_NET; 291 mib[1] = PF_ROUTE; 292 mib[2] = 0; /* protocol */ 293 mib[3] = 0; /* wildcard address family */ 294 mib[4] = NET_RT_DUMP; 295 mib[5] = 0; /* no flags */ 296 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 297 err(1, "route-sysctl-estimate"); 298 if (needed == 0) 299 return 0; 300 if ((buf = malloc(needed)) == NULL) 301 err(1, "malloc"); 302 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 303 err(1, "actual retrieval of routing table"); 304 lim = buf + needed; 305 if (verbose) { 306 (void)printf("Examining routing table from sysctl\n"); 307 if (af) printf("(address family %s)\n", (*argv + 1)); 308 } 309 seqno = 0; /* ??? */ 310 for (next = buf; next < lim; next += rtm->rtm_msglen) { 311 rtm = (struct rt_msghdr *)next; 312 if (verbose) 313 print_rtmsg(rtm, rtm->rtm_msglen); 314 if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC | 315 RTF_LLINFO)) && !doall) 316 continue; 317 if (af) { 318 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 319 320 if (sa->sa_family != af) 321 continue; 322 } 323 if (debugonly) 324 continue; 325 rtm->rtm_type = RTM_DELETE; 326 rtm->rtm_seq = seqno; 327 rlen = write(sock, next, rtm->rtm_msglen); 328 if (rlen < (int)rtm->rtm_msglen) { 329 warn("write to routing socket, got %d for rlen", rlen); 330 return 1; 331 } 332 seqno++; 333 if (qflag) 334 continue; 335 if (verbose) 336 print_rtmsg(rtm, rlen); 337 else { 338 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 339 (void)printf("%-20.20s ", 340 routename(sa, NULL, rtm->rtm_flags)); 341 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 342 (void)printf("%-20.20s ", 343 routename(sa, NULL, RTF_HOST)); 344 (void)printf("done\n"); 345 } 346 } 347 return 0; 348 } 349 350 351 static char hexlist[] = "0123456789abcdef"; 352 353 static char * 354 any_ntoa(const struct sockaddr *sa) 355 { 356 static char obuf[3 * 256]; 357 const char *in; 358 char *out; 359 int len; 360 361 #if __GNUC__ > 2 362 len = sa->sa_len - offsetof(struct sockaddr, sa_data); 363 #else 364 len = sa->sa_len - ((caddr_t)&sa->sa_data - (caddr_t)sa); 365 #endif 366 in = sa->sa_data; 367 out = obuf; 368 369 do { 370 *out++ = hexlist[(*in >> 4) & 15]; 371 *out++ = hexlist[(*in++) & 15]; 372 *out++ = '.'; 373 } while (--len > 0); 374 out[-1] = '\0'; 375 return obuf; 376 } 377 378 379 int 380 netmask_length(struct sockaddr *nm, int family) 381 { 382 static int 383 /* number of bits in a nibble */ 384 _t[] = { 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4 }, 385 /* good nibbles are 1111, 1110, 1100, 1000, 0000 */ 386 _g[] = { 1,0,0,0,0,0,0,0,1,0,0,0,1,0,1,1 }; 387 int mask, good, zeroes, maskbytes, bit, i; 388 unsigned char *maskdata; 389 390 if (nm == NULL) 391 return 0; 392 393 mask = 0; 394 good = 1; 395 zeroes = 0; 396 397 switch (family) { 398 case AF_INET: { 399 struct sockaddr_in *nsin = (struct sockaddr_in *)nm; 400 maskdata = (unsigned char *)&nsin->sin_addr; 401 maskbytes = nsin->sin_len - 402 ((caddr_t)&nsin->sin_addr - (caddr_t)nsin); 403 break; 404 } 405 case AF_INET6: { 406 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nm; 407 maskdata = (unsigned char *)&sin6->sin6_addr; 408 maskbytes = sin6->sin6_len - 409 ((caddr_t)&sin6->sin6_addr - (caddr_t)sin6); 410 break; 411 } 412 default: 413 return 0; 414 } 415 416 /* 417 * Count the bits in the nibbles of the mask, and marking the 418 * netmask as not good (or at best, non-standard and very 419 * discouraged, in the case of AF_INET) if we find either of 420 * a nibble with non-contiguous bits, or a non-zero nibble 421 * after we've found a zero nibble. 422 */ 423 for (i = 0; i < maskbytes; i++) { 424 /* high nibble */ 425 mask += bit = _t[maskdata[i] >> 4]; 426 good &= _g[maskdata[i] >> 4]; 427 if (zeroes && bit) 428 good = 0; 429 if (bit == 0) 430 zeroes = 1; 431 /* low nibble */ 432 mask += bit = _t[maskdata[i] & 0xf]; 433 good &= _g[maskdata[i] & 0xf]; 434 if (zeroes && bit) 435 good = 0; 436 if (bit == 0) 437 zeroes = 1; 438 } 439 440 /* 441 * Always return the number of bits found, but as a negative 442 * if the mask wasn't one we like. 443 */ 444 return good ? mask : -mask; 445 } 446 447 char * 448 netmask_string(struct sockaddr *mask, int len) 449 { 450 static char smask[16]; 451 452 if (len >= 0) 453 snprintf(smask, sizeof(smask), "%d", len); 454 else { 455 /* XXX AF_INET only?! */ 456 struct sockaddr_in nsin; 457 458 memset(&nsin, 0, sizeof(nsin)); 459 memcpy(&nsin, mask, mask->sa_len); 460 snprintf(smask, sizeof(smask), "%s", inet_ntoa(nsin.sin_addr)); 461 } 462 463 return smask; 464 } 465 466 467 const char * 468 routename(struct sockaddr *sa, struct sockaddr *nm, int flags) 469 { 470 const char *cp; 471 static char line[50]; 472 struct hostent *hp; 473 static char domain[MAXHOSTNAMELEN + 1]; 474 static int first = 1; 475 struct in_addr in; 476 int nml; 477 478 if ((flags & RTF_HOST) == 0) 479 return netname(sa, nm); 480 481 if (first) { 482 first = 0; 483 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 484 (cp = strchr(domain, '.'))) 485 (void)strlcpy(domain, cp + 1, sizeof(domain)); 486 else 487 domain[0] = 0; 488 } 489 490 if (sa->sa_len == 0) 491 strlcpy(line, "default", sizeof(line)); 492 else switch (sa->sa_family) { 493 494 case AF_INET: 495 in = ((struct sockaddr_in *)sa)->sin_addr; 496 nml = netmask_length(nm, AF_INET); 497 498 cp = 0; 499 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) { 500 if (nml == 0) 501 cp = "default"; 502 else { 503 static char notdefault[sizeof(NOTDEFSTRING)]; 504 505 snprintf(notdefault, sizeof(notdefault), 506 "0.0.0.0/%s", netmask_string(nm, nml)); 507 cp = notdefault; 508 } 509 } 510 if (cp == 0 && !nflag) { 511 hp = gethostbyaddr((char *)&in, sizeof(struct in_addr), 512 AF_INET); 513 if (hp) { 514 char *ccp; 515 if ((ccp = strchr(hp->h_name, '.')) && 516 !strcmp(ccp + 1, domain)) 517 *ccp = 0; 518 cp = hp->h_name; 519 } 520 } 521 if (cp) 522 (void)strlcpy(line, cp, sizeof(line)); 523 else 524 (void)strlcpy(line, inet_ntoa(in), sizeof(line)); 525 break; 526 527 case AF_LINK: 528 return (link_ntoa((struct sockaddr_dl *)sa)); 529 530 #ifndef SMALL 531 #ifdef INET6 532 case AF_INET6: 533 { 534 struct sockaddr_in6 sin6; 535 int niflags; 536 537 niflags = 0; 538 if (nflag) 539 niflags |= NI_NUMERICHOST; 540 memset(&sin6, 0, sizeof(sin6)); 541 memcpy(&sin6, sa, sa->sa_len); 542 sin6.sin6_len = sizeof(struct sockaddr_in6); 543 sin6.sin6_family = AF_INET6; 544 #ifdef __KAME__ 545 if (sa->sa_len == sizeof(struct sockaddr_in6) && 546 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 547 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 548 sin6.sin6_scope_id == 0) { 549 sin6.sin6_scope_id = 550 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 551 sin6.sin6_addr.s6_addr[2] = 0; 552 sin6.sin6_addr.s6_addr[3] = 0; 553 } 554 #endif 555 nml = netmask_length(nm, AF_INET6); 556 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 557 if (nml == 0) 558 strlcpy(line, "::", sizeof(line)); 559 else 560 /* noncontiguous never happens in ipv6 */ 561 snprintf(line, sizeof(line), "::/%d", nml); 562 } 563 564 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 565 line, sizeof(line), NULL, 0, niflags) != 0) 566 strlcpy(line, "invalid", sizeof(line)); 567 break; 568 } 569 #endif 570 571 case AF_NS: 572 return (ns_print((struct sockaddr_ns *)sa)); 573 574 case AF_ISO: 575 (void)snprintf(line, sizeof line, "iso %s", 576 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 577 break; 578 579 case AF_APPLETALK: 580 (void)snprintf(line, sizeof(line), "atalk %d.%d", 581 ((struct sockaddr_at *)sa)->sat_addr.s_net, 582 ((struct sockaddr_at *)sa)->sat_addr.s_node); 583 break; 584 #endif /* SMALL */ 585 586 default: 587 (void)snprintf(line, sizeof line, "(%d) %s", 588 sa->sa_family, any_ntoa(sa)); 589 break; 590 591 } 592 return (line); 593 } 594 595 /* 596 * Return the name of the network whose address is given. 597 * The address is assumed to be that of a net or subnet, not a host. 598 */ 599 const char * 600 netname(struct sockaddr *sa, struct sockaddr *nm) 601 { 602 const char *cp = 0; 603 static char line[50]; 604 struct netent *np = 0; 605 u_int32_t net, mask; 606 u_int32_t i; 607 int subnetshift, nml; 608 struct in_addr in; 609 610 switch (sa->sa_family) { 611 612 case AF_INET: 613 in = ((struct sockaddr_in *)sa)->sin_addr; 614 i = ntohl(in.s_addr); 615 nml = netmask_length(nm, AF_INET); 616 if (i == 0) { 617 if (nml == 0) 618 cp = "default"; 619 else { 620 static char notdefault[sizeof(NOTDEFSTRING)]; 621 622 snprintf(notdefault, sizeof(notdefault), 623 "0.0.0.0/%s", netmask_string(nm, nml)); 624 cp = notdefault; 625 } 626 } 627 else if (!nflag) { 628 if (IN_CLASSA(i)) { 629 mask = IN_CLASSA_NET; 630 subnetshift = 8; 631 } else if (IN_CLASSB(i)) { 632 mask = IN_CLASSB_NET; 633 subnetshift = 8; 634 } else { 635 mask = IN_CLASSC_NET; 636 subnetshift = 4; 637 } 638 /* 639 * If there are more bits than the standard mask 640 * would suggest, subnets must be in use. 641 * Guess at the subnet mask, assuming reasonable 642 * width subnet fields. 643 */ 644 while (i &~ mask) 645 mask = (int32_t)mask >> subnetshift; 646 net = i & mask; 647 while ((mask & 1) == 0) 648 mask >>= 1, net >>= 1; 649 np = getnetbyaddr(net, AF_INET); 650 if (np) 651 cp = np->n_name; 652 } 653 if (cp) 654 (void)strlcpy(line, cp, sizeof(line)); 655 else { 656 #if 0 /* XXX - This is silly... */ 657 #define C(x) ((x) & 0xff) 658 if ((i & 0xffffff) == 0) 659 (void)snprintf(line, sizeof line, "%u", 660 C(i >> 24)); 661 else if ((i & 0xffff) == 0) 662 (void)snprintf(line, sizeof line, "%u.%u", 663 C(i >> 24), C(i >> 16)); 664 else if ((i & 0xff) == 0) 665 (void)snprintf(line, sizeof line, "%u.%u.%u", 666 C(i >> 24), C(i >> 16), C(i >> 8)); 667 else 668 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 669 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 670 #undef C 671 #else /* XXX */ 672 if (nml == 0) 673 strlcpy(line, inet_ntoa(in), sizeof(line)); 674 else 675 snprintf(line, sizeof(line), "%s/%d", inet_ntoa(in), nml); 676 #endif /* XXX */ 677 } 678 break; 679 680 case AF_LINK: 681 return (link_ntoa((struct sockaddr_dl *)sa)); 682 683 #ifndef SMALL 684 #ifdef INET6 685 case AF_INET6: 686 { 687 struct sockaddr_in6 sin6; 688 int niflags; 689 690 niflags = 0; 691 if (nflag) 692 niflags |= NI_NUMERICHOST; 693 memset(&sin6, 0, sizeof(sin6)); 694 memcpy(&sin6, sa, sa->sa_len); 695 sin6.sin6_len = sizeof(struct sockaddr_in6); 696 sin6.sin6_family = AF_INET6; 697 #ifdef __KAME__ 698 if (sa->sa_len == sizeof(struct sockaddr_in6) && 699 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 700 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 701 sin6.sin6_scope_id == 0) { 702 sin6.sin6_scope_id = 703 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 704 sin6.sin6_addr.s6_addr[2] = 0; 705 sin6.sin6_addr.s6_addr[3] = 0; 706 } 707 #endif 708 nml = netmask_length(nm, AF_INET6); 709 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 710 if (nml == 0) 711 strlcpy(line, "::", sizeof(line)); 712 else 713 /* noncontiguous never happens in ipv6 */ 714 snprintf(line, sizeof(line), "::/%d", nml); 715 } 716 717 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 718 line, sizeof(line), NULL, 0, niflags) != 0) 719 strlcpy(line, "invalid", sizeof(line)); 720 break; 721 } 722 #endif 723 724 case AF_NS: 725 return (ns_print((struct sockaddr_ns *)sa)); 726 727 case AF_ISO: 728 (void)snprintf(line, sizeof line, "iso %s", 729 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 730 break; 731 732 case AF_APPLETALK: 733 (void)snprintf(line, sizeof(line), "atalk %d.%d", 734 ((struct sockaddr_at *)sa)->sat_addr.s_net, 735 ((struct sockaddr_at *)sa)->sat_addr.s_node); 736 break; 737 #endif /* SMALL */ 738 739 default: 740 (void)snprintf(line, sizeof line, "af %d: %s", 741 sa->sa_family, any_ntoa(sa)); 742 break; 743 } 744 return (line); 745 } 746 747 static void 748 set_metric(char *value, int key) 749 { 750 int flag = 0; 751 u_long noval, *valp = &noval; 752 753 switch (key) { 754 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 755 caseof(K_MTU, RTV_MTU, rmx_mtu); 756 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 757 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 758 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 759 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 760 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 761 caseof(K_RTT, RTV_RTT, rmx_rtt); 762 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 763 } 764 rtm_inits |= flag; 765 if (lockrest || locking) 766 rt_metrics.rmx_locks |= flag; 767 if (locking) 768 locking = 0; 769 *valp = atoi(value); 770 } 771 772 static int 773 newroute(int argc, char **argv) 774 { 775 const char *cmd, *dest = "", *gateway = ""; 776 const char *error; 777 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 778 int key; 779 struct hostent *hp = 0; 780 781 cmd = argv[0]; 782 af = 0; 783 if (*cmd != 'g') 784 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 785 while (--argc > 0) { 786 if (**(++argv)== '-') { 787 switch (key = keyword(1 + *argv)) { 788 789 case K_SA: 790 af = PF_ROUTE; 791 aflen = sizeof(union sockunion); 792 break; 793 794 #ifndef SMALL 795 case K_ATALK: 796 af = AF_APPLETALK; 797 aflen = sizeof(struct sockaddr_at); 798 break; 799 #endif 800 801 case K_INET: 802 af = AF_INET; 803 aflen = sizeof(struct sockaddr_in); 804 break; 805 806 #ifdef INET6 807 case K_INET6: 808 af = AF_INET6; 809 aflen = sizeof(struct sockaddr_in6); 810 break; 811 #endif 812 813 case K_LINK: 814 af = AF_LINK; 815 aflen = sizeof(struct sockaddr_dl); 816 break; 817 818 #ifndef SMALL 819 case K_OSI: 820 case K_ISO: 821 af = AF_ISO; 822 aflen = sizeof(struct sockaddr_iso); 823 break; 824 825 case K_X25: 826 af = AF_CCITT; 827 aflen = sizeof(struct sockaddr_x25); 828 break; 829 830 case K_XNS: 831 af = AF_NS; 832 aflen = sizeof(struct sockaddr_ns); 833 break; 834 #endif /* SMALL */ 835 836 case K_IFACE: 837 case K_INTERFACE: 838 iflag++; 839 break; 840 case K_NOSTATIC: 841 flags &= ~RTF_STATIC; 842 break; 843 case K_LLINFO: 844 flags |= RTF_LLINFO; 845 break; 846 case K_LOCK: 847 locking = 1; 848 break; 849 case K_LOCKREST: 850 lockrest = 1; 851 break; 852 case K_HOST: 853 forcehost++; 854 break; 855 case K_REJECT: 856 flags |= RTF_REJECT; 857 break; 858 case K_BLACKHOLE: 859 flags |= RTF_BLACKHOLE; 860 break; 861 case K_CLONED: 862 flags |= RTF_CLONED; 863 break; 864 case K_PROTO1: 865 flags |= RTF_PROTO1; 866 break; 867 case K_PROTO2: 868 flags |= RTF_PROTO2; 869 break; 870 case K_CLONING: 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); 883 break; 884 case K_IFP: 885 if (!--argc) 886 usage(1+*argv); 887 (void)getaddr(RTA_IFP, *++argv, 0); 888 break; 889 case K_GENMASK: 890 if (!--argc) 891 usage(1+*argv); 892 (void)getaddr(RTA_GENMASK, *++argv, 0); 893 break; 894 case K_GATEWAY: 895 if (!--argc) 896 usage(1+*argv); 897 (void)getaddr(RTA_GATEWAY, *++argv, 0); 898 break; 899 case K_DST: 900 if (!--argc) 901 usage(1+*argv); 902 ishost = getaddr(RTA_DST, *++argv, &hp); 903 dest = *argv; 904 break; 905 case K_NETMASK: 906 if (!--argc) 907 usage(1+*argv); 908 (void)getaddr(RTA_NETMASK, *++argv, 0); 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); 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); 937 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 938 gateway = *argv; 939 (void)getaddr(RTA_GATEWAY, *argv, &hp); 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((char *)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); 964 } 965 } 966 } 967 if (forcehost && forcenet) 968 errx(1, "-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)) == 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(&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 rv; 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(so_gate.sin.sin_addr)); 1001 } 1002 if (ret == 0) 1003 (void)printf("\n"); 1004 else { 1005 switch (oerrno) { 1006 case ESRCH: 1007 error = "not in table"; 1008 break; 1009 case EBUSY: 1010 error = "entry in use"; 1011 break; 1012 case ENOBUFS: 1013 error = "routing table overflow"; 1014 break; 1015 default: 1016 error = strerror(oerrno); 1017 break; 1018 } 1019 (void)printf(": %s\n", error); 1020 } 1021 } 1022 return (ret != 0); 1023 } 1024 1025 static void 1026 inet_makenetandmask(u_int32_t net, struct sockaddr_in *isin) 1027 { 1028 u_int32_t addr, mask = 0; 1029 char *cp; 1030 1031 rtm_addrs |= RTA_NETMASK; 1032 if (net == 0) 1033 mask = addr = 0; 1034 else if (net < 128) { 1035 addr = net << IN_CLASSA_NSHIFT; 1036 mask = IN_CLASSA_NET; 1037 } else if (net < 192) { 1038 addr = net << IN_CLASSA_NSHIFT; 1039 mask = IN_CLASSB_NET; 1040 } else if (net < 224) { 1041 addr = net << IN_CLASSA_NSHIFT; 1042 mask = IN_CLASSC_NET; 1043 } else if (net < 256) { 1044 addr = net << IN_CLASSA_NSHIFT; 1045 mask = IN_CLASSD_NET; 1046 } else if (net < 49152) { /* 192 * 256 */ 1047 addr = net << IN_CLASSB_NSHIFT; 1048 mask = IN_CLASSB_NET; 1049 } else if (net < 57344) { /* 224 * 256 */ 1050 addr = net << IN_CLASSB_NSHIFT; 1051 mask = IN_CLASSC_NET; 1052 } else if (net < 65536) { 1053 addr = net << IN_CLASSB_NSHIFT; 1054 mask = IN_CLASSB_NET; 1055 } else if (net < 14680064L) { /* 224 * 65536 */ 1056 addr = net << IN_CLASSC_NSHIFT; 1057 mask = IN_CLASSC_NET; 1058 } else if (net < 16777216L) { 1059 addr = net << IN_CLASSC_NSHIFT; 1060 mask = IN_CLASSD_NET; 1061 } else { 1062 addr = net; 1063 if ((addr & IN_CLASSA_HOST) == 0) 1064 mask = IN_CLASSA_NET; 1065 else if ((addr & IN_CLASSB_HOST) == 0) 1066 mask = IN_CLASSB_NET; 1067 else if ((addr & IN_CLASSC_HOST) == 0) 1068 mask = IN_CLASSC_NET; 1069 else 1070 mask = -1; 1071 } 1072 isin->sin_addr.s_addr = htonl(addr); 1073 isin = &so_mask.sin; 1074 isin->sin_addr.s_addr = htonl(mask); 1075 isin->sin_len = 0; 1076 isin->sin_family = 0; 1077 cp = (char *)(&isin->sin_addr + 1); 1078 while (*--cp == 0 && cp > (char *)isin) 1079 ; 1080 isin->sin_len = 1 + cp - (char *)isin; 1081 } 1082 1083 #ifdef INET6 1084 /* 1085 * XXX the function may need more improvement... 1086 */ 1087 static int 1088 inet6_makenetandmask(struct sockaddr_in6 *sin6) 1089 { 1090 const char *plen; 1091 struct in6_addr in6; 1092 1093 plen = NULL; 1094 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 1095 sin6->sin6_scope_id == 0) { 1096 plen = "0"; 1097 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 1098 /* aggregatable global unicast - RFC2374 */ 1099 memset(&in6, 0, sizeof(in6)); 1100 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 1101 plen = "64"; 1102 } 1103 1104 if (!plen || strcmp(plen, "128") == 0) 1105 return 1; 1106 else { 1107 rtm_addrs |= RTA_NETMASK; 1108 (void)prefixlen(plen); 1109 return 0; 1110 } 1111 } 1112 #endif 1113 1114 /* 1115 * Interpret an argument as a network address of some kind, 1116 * returning 1 if a host address, 0 if a network address. 1117 */ 1118 static int 1119 getaddr(int which, char *s, struct hostent **hpp) 1120 { 1121 sup su; 1122 struct hostent *hp; 1123 struct netent *np; 1124 u_int32_t val; 1125 char *t; 1126 int afamily; /* local copy of af so we can change it */ 1127 1128 if (af == 0) { 1129 af = AF_INET; 1130 aflen = sizeof(struct sockaddr_in); 1131 } 1132 afamily = af; 1133 rtm_addrs |= which; 1134 switch (which) { 1135 case RTA_DST: 1136 su = &so_dst; 1137 break; 1138 case RTA_GATEWAY: 1139 su = &so_gate; 1140 break; 1141 case RTA_NETMASK: 1142 su = &so_mask; 1143 break; 1144 case RTA_GENMASK: 1145 su = &so_genmask; 1146 break; 1147 case RTA_IFP: 1148 su = &so_ifp; 1149 afamily = AF_LINK; 1150 break; 1151 case RTA_IFA: 1152 su = &so_ifa; 1153 su->sa.sa_family = af; 1154 break; 1155 default: 1156 su = NULL; 1157 usage("Internal Error"); 1158 /*NOTREACHED*/ 1159 } 1160 su->sa.sa_len = aflen; 1161 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1162 if (strcmp(s, "default") == 0) { 1163 switch (which) { 1164 case RTA_DST: 1165 forcenet++; 1166 (void)getaddr(RTA_NETMASK, s, 0); 1167 break; 1168 case RTA_NETMASK: 1169 case RTA_GENMASK: 1170 su->sa.sa_len = 0; 1171 } 1172 return (0); 1173 } 1174 switch (afamily) { 1175 #ifndef SMALL 1176 #ifdef INET6 1177 case AF_INET6: 1178 { 1179 struct addrinfo hints, *res; 1180 char *slash = 0; 1181 1182 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 1183 *slash = '\0'; 1184 memset(&hints, 0, sizeof(hints)); 1185 hints.ai_family = afamily; /*AF_INET6*/ 1186 hints.ai_flags = AI_NUMERICHOST; 1187 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1188 if (getaddrinfo(s, "0", &hints, &res) != 0) { 1189 hints.ai_flags = 0; 1190 if (slash) { 1191 *slash = '/'; 1192 slash = 0; 1193 } 1194 if (getaddrinfo(s, "0", &hints, &res) != 0) 1195 errx(1, "bad value: %s", s); 1196 } 1197 if (slash) 1198 *slash = '/'; 1199 if (sizeof(su->sin6) != res->ai_addrlen) 1200 errx(1, "%s: bad value", s); 1201 if (res->ai_next) 1202 errx(1, "address resolved to multiple values: %s", s); 1203 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1204 freeaddrinfo(res); 1205 #ifdef __KAME__ 1206 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1207 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1208 su->sin6.sin6_scope_id) { 1209 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1210 htons(su->sin6.sin6_scope_id); 1211 su->sin6.sin6_scope_id = 0; 1212 } 1213 #endif 1214 if (hints.ai_flags == AI_NUMERICHOST) { 1215 if (slash) 1216 return (prefixlen(slash + 1)); 1217 if (which == RTA_DST) 1218 return (inet6_makenetandmask(&su->sin6)); 1219 return (0); 1220 } else 1221 return (1); 1222 } 1223 #endif 1224 1225 case AF_NS: 1226 if (which == RTA_DST) { 1227 struct sockaddr_ns *sms = &(so_mask.sns); 1228 memset(sms, 0, sizeof(*sms)); 1229 sms->sns_family = 0; 1230 sms->sns_len = 6; 1231 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1232 rtm_addrs |= RTA_NETMASK; 1233 } 1234 su->sns.sns_addr = ns_addr(s); 1235 return (!ns_nullhost(su->sns.sns_addr)); 1236 1237 case AF_OSI: 1238 su->siso.siso_addr = *iso_addr(s); 1239 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1240 char *cp = (char *)TSEL(&su->siso); 1241 su->siso.siso_nlen = 0; 1242 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1243 su->siso.siso_len = 1 + cp - (char *)su; 1244 } 1245 return (1); 1246 1247 case AF_CCITT: 1248 ccitt_addr(s, &su->sx25); 1249 return (which == RTA_DST ? x25_makemask() : 1); 1250 #endif /* SMALL */ 1251 1252 case PF_ROUTE: 1253 su->sa.sa_len = sizeof(*su); 1254 sockaddr(s, &su->sa); 1255 return (1); 1256 1257 #ifndef SMALL 1258 case AF_APPLETALK: 1259 t = strchr (s, '.'); 1260 if (!t) { 1261 badataddr: 1262 errx(1, "bad address: %s", s); 1263 } 1264 val = atoi (s); 1265 if (val > 65535) 1266 goto badataddr; 1267 su->sat.sat_addr.s_net = val; 1268 val = atoi (t); 1269 if (val > 256) 1270 goto badataddr; 1271 su->sat.sat_addr.s_node = val; 1272 rtm_addrs |= RTA_NETMASK; 1273 return(forcehost || su->sat.sat_addr.s_node != 0); 1274 #endif 1275 1276 case AF_LINK: 1277 link_addr(s, &su->sdl); 1278 return (1); 1279 1280 case AF_INET: 1281 default: 1282 break; 1283 } 1284 1285 if (hpp == NULL) 1286 hpp = &hp; 1287 *hpp = NULL; 1288 1289 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 1290 *t = '\0'; 1291 if (forcenet == 0) { 1292 if ((val = inet_addr(s)) != INADDR_NONE) { 1293 inet_makenetandmask(htonl(val), &su->sin); 1294 return prefixlen(&t[1]); 1295 } 1296 } else { 1297 if ((val = inet_network(s)) != INADDR_NONE) { 1298 inet_makenetandmask(val, &su->sin); 1299 return prefixlen(&t[1]); 1300 } 1301 } 1302 *t = '/'; 1303 } 1304 if (inet_aton(s, &su->sin.sin_addr) && 1305 (which != RTA_DST || forcenet == 0)) { 1306 val = su->sin.sin_addr.s_addr; 1307 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1308 return (1); 1309 else { 1310 val = ntohl(val); 1311 goto netdone; 1312 } 1313 } 1314 if ((val = inet_network(s)) != INADDR_NONE || 1315 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1316 netdone: 1317 if (which == RTA_DST) 1318 inet_makenetandmask(val, &su->sin); 1319 return (0); 1320 } 1321 hp = gethostbyname(s); 1322 if (hp) { 1323 *hpp = hp; 1324 su->sin.sin_family = hp->h_addrtype; 1325 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1326 return (1); 1327 } 1328 errx(1, "bad value: %s", s); 1329 } 1330 1331 int 1332 prefixlen(const char *s) 1333 { 1334 int len = atoi(s), q, r; 1335 int max; 1336 1337 switch (af) { 1338 case AF_INET: 1339 max = sizeof(struct in_addr) * 8; 1340 break; 1341 #ifdef INET6 1342 case AF_INET6: 1343 max = sizeof(struct in6_addr) * 8; 1344 break; 1345 #endif 1346 default: 1347 errx(1, "prefixlen is not supported with af %d", af); 1348 } 1349 1350 rtm_addrs |= RTA_NETMASK; 1351 if (len < -1 || len > max) 1352 errx(1, "bad value: %s", s); 1353 1354 q = len >> 3; 1355 r = len & 7; 1356 switch (af) { 1357 case AF_INET: 1358 memset(&so_mask, 0, sizeof(so_mask)); 1359 so_mask.sin.sin_family = AF_INET; 1360 so_mask.sin.sin_len = sizeof(struct sockaddr_in); 1361 so_mask.sin.sin_addr.s_addr = htonl(0xffffffff << (32 - len)); 1362 break; 1363 #ifdef INET6 1364 case AF_INET6: 1365 so_mask.sin6.sin6_family = AF_INET6; 1366 so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1367 memset((void *)&so_mask.sin6.sin6_addr, 0, 1368 sizeof(so_mask.sin6.sin6_addr)); 1369 if (q > 0) 1370 memset((void *)&so_mask.sin6.sin6_addr, 0xff, q); 1371 if (r > 0) 1372 *((u_char *)&so_mask.sin6.sin6_addr + q) = 1373 (0xff00 >> r) & 0xff; 1374 break; 1375 #endif 1376 } 1377 return (len == max); 1378 } 1379 1380 #ifndef SMALL 1381 int 1382 x25_makemask(void) 1383 { 1384 char *cp; 1385 1386 if ((rtm_addrs & RTA_NETMASK) == 0) { 1387 rtm_addrs |= RTA_NETMASK; 1388 for (cp = (char *)&so_mask.sx25.x25_net; 1389 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1390 *cp = -1; 1391 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1392 } 1393 return 0; 1394 } 1395 1396 1397 const char * 1398 ns_print(struct sockaddr_ns *sns) 1399 { 1400 struct ns_addr work; 1401 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1402 u_short port; 1403 static char mybuf[50], cport[10], chost[25]; 1404 const char *host = ""; 1405 char *p; 1406 u_char *q; 1407 1408 work = sns->sns_addr; 1409 port = ntohs(work.x_port); 1410 work.x_port = 0; 1411 net.net_e = work.x_net; 1412 if (ns_nullhost(work) && net.int32_t_e == 0) { 1413 if (!port) 1414 return ("*.*"); 1415 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1416 return (mybuf); 1417 } 1418 1419 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1420 host = "any"; 1421 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1422 host = "*"; 1423 else { 1424 q = work.x_host.c_host; 1425 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1426 q[0], q[1], q[2], q[3], q[4], q[5]); 1427 for (p = chost; *p == '0' && p < chost + 12; p++) 1428 /* void */; 1429 host = p; 1430 } 1431 if (port) 1432 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1433 else 1434 *cport = 0; 1435 1436 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1437 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1438 return (mybuf); 1439 } 1440 1441 static void 1442 interfaces(void) 1443 { 1444 size_t needed; 1445 int mib[6]; 1446 char *buf, *lim, *next; 1447 struct rt_msghdr *rtm; 1448 1449 mib[0] = CTL_NET; 1450 mib[1] = PF_ROUTE; 1451 mib[2] = 0; /* protocol */ 1452 mib[3] = 0; /* wildcard address family */ 1453 mib[4] = NET_RT_IFLIST; 1454 mib[5] = 0; /* no flags */ 1455 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1456 err(1, "route-sysctl-estimate"); 1457 if ((buf = malloc(needed)) == NULL) 1458 err(1, "malloc"); 1459 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1460 err(1, "actual retrieval of interface table"); 1461 lim = buf + needed; 1462 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1463 rtm = (struct rt_msghdr *)next; 1464 print_rtmsg(rtm, rtm->rtm_msglen); 1465 } 1466 } 1467 1468 static void 1469 monitor(void) 1470 { 1471 int n; 1472 char msg[2048]; 1473 1474 verbose = 1; 1475 if (debugonly) { 1476 interfaces(); 1477 exit(0); 1478 } 1479 for(;;) { 1480 time_t now; 1481 n = read(sock, msg, 2048); 1482 now = time(NULL); 1483 (void)printf("got message of size %d on %s", n, ctime(&now)); 1484 print_rtmsg((struct rt_msghdr *)msg, n); 1485 } 1486 } 1487 1488 #endif /* SMALL */ 1489 1490 1491 struct { 1492 struct rt_msghdr m_rtm; 1493 char m_space[512]; 1494 } m_rtmsg; 1495 1496 static int 1497 rtmsg(int cmd, int flags) 1498 { 1499 static int seq; 1500 int rlen; 1501 char *cp = m_rtmsg.m_space; 1502 int l; 1503 1504 #define NEXTADDR(w, u) \ 1505 if (rtm_addrs & (w)) {\ 1506 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1507 if (verbose && ! shortoutput) sodump(&(u),#u);\ 1508 } 1509 1510 errno = 0; 1511 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1512 if (cmd == 'a') 1513 cmd = RTM_ADD; 1514 else if (cmd == 'c') 1515 cmd = RTM_CHANGE; 1516 else if (cmd == 'g') { 1517 #ifdef SMALL 1518 return (-1); 1519 #else /* SMALL */ 1520 cmd = RTM_GET; 1521 if (so_ifp.sa.sa_family == 0) { 1522 so_ifp.sa.sa_family = AF_LINK; 1523 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1524 rtm_addrs |= RTA_IFP; 1525 } 1526 #endif /* SMALL */ 1527 } else 1528 cmd = RTM_DELETE; 1529 #define rtm m_rtmsg.m_rtm 1530 rtm.rtm_type = cmd; 1531 rtm.rtm_flags = flags; 1532 rtm.rtm_version = RTM_VERSION; 1533 rtm.rtm_seq = ++seq; 1534 rtm.rtm_addrs = rtm_addrs; 1535 rtm.rtm_rmx = rt_metrics; 1536 rtm.rtm_inits = rtm_inits; 1537 1538 if (rtm_addrs & RTA_NETMASK) 1539 mask_addr(); 1540 NEXTADDR(RTA_DST, so_dst); 1541 NEXTADDR(RTA_GATEWAY, so_gate); 1542 NEXTADDR(RTA_NETMASK, so_mask); 1543 NEXTADDR(RTA_GENMASK, so_genmask); 1544 NEXTADDR(RTA_IFP, so_ifp); 1545 NEXTADDR(RTA_IFA, so_ifa); 1546 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1547 if (verbose && ! shortoutput) 1548 print_rtmsg(&rtm, l); 1549 if (debugonly) 1550 return (0); 1551 if ((rlen = write(sock, (char *)&m_rtmsg, l)) < 0) { 1552 warn("writing to routing socket"); 1553 return (-1); 1554 } 1555 #ifndef SMALL 1556 if (cmd == RTM_GET) { 1557 do { 1558 l = read(sock, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1559 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1560 if (l < 0) 1561 err(1, "read from routing socket"); 1562 else 1563 print_getmsg(&rtm, l); 1564 } 1565 #endif /* SMALL */ 1566 #undef rtm 1567 return (0); 1568 } 1569 1570 static void 1571 mask_addr(void) 1572 { 1573 int olen = so_mask.sa.sa_len; 1574 char *cp1 = olen + (char *)&so_mask, *cp2; 1575 1576 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1577 if (*--cp1 != 0) { 1578 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1579 break; 1580 } 1581 if ((rtm_addrs & RTA_DST) == 0) 1582 return; 1583 switch (so_dst.sa.sa_family) { 1584 case AF_INET: 1585 #ifdef INET6 1586 case AF_INET6: 1587 #endif 1588 #ifndef SMALL 1589 case AF_APPLETALK: 1590 case AF_NS: 1591 case AF_CCITT: 1592 #endif /* SMALL */ 1593 case 0: 1594 return; 1595 #ifndef SMALL 1596 case AF_ISO: 1597 olen = MIN(so_dst.siso.siso_nlen, 1598 MAX(so_mask.sa.sa_len - 6, 0)); 1599 break; 1600 #endif /* SMALL */ 1601 } 1602 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1603 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1604 while (cp2 > cp1) 1605 *--cp2 = 0; 1606 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1607 while (cp1 > so_dst.sa.sa_data) 1608 *--cp1 &= *--cp2; 1609 #ifndef SMALL 1610 switch (so_dst.sa.sa_family) { 1611 case AF_ISO: 1612 so_dst.siso.siso_nlen = olen; 1613 break; 1614 } 1615 #endif /* SMALL */ 1616 } 1617 1618 const char *msgtypes[] = { 1619 "", 1620 "RTM_ADD: Add Route", 1621 "RTM_DELETE: Delete Route", 1622 "RTM_CHANGE: Change Metrics or flags", 1623 "RTM_GET: Report Metrics", 1624 "RTM_LOSING: Kernel Suspects Partitioning", 1625 "RTM_REDIRECT: Told to use different route", 1626 "RTM_MISS: Lookup failed on this address", 1627 "RTM_LOCK: fix specified metrics", 1628 "RTM_OLDADD: caused by SIOCADDRT", 1629 "RTM_OLDDEL: caused by SIOCDELRT", 1630 "RTM_RESOLVE: Route created by cloning", 1631 "RTM_NEWADDR: address being added to iface", 1632 "RTM_DELADDR: address being removed from iface", 1633 "RTM_OIFINFO: iface status change (pre-1.5)", 1634 "RTM_IFINFO: iface status change", 1635 "RTM_IFANNOUNCE: iface arrival/departure", 1636 "RTM_IEEE80211: IEEE80211 wireless event", 1637 0, 1638 }; 1639 1640 char metricnames[] = 1641 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1642 char routeflags[] = 1643 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1644 char ifnetflags[] = 1645 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1646 char addrnames[] = 1647 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1648 1649 1650 #ifndef SMALL 1651 static const char * 1652 linkstate(struct if_msghdr *ifm) 1653 { 1654 static char buf[64]; 1655 1656 switch (ifm->ifm_data.ifi_link_state) { 1657 case LINK_STATE_UNKNOWN: 1658 return "carrier: unknown"; 1659 case LINK_STATE_DOWN: 1660 return "carrier: no carrier"; 1661 case LINK_STATE_UP: 1662 return "carrier: active"; 1663 default: 1664 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1665 ifm->ifm_data.ifi_link_state); 1666 return buf; 1667 } 1668 } 1669 #endif /* SMALL */ 1670 1671 static void 1672 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1673 { 1674 struct if_msghdr *ifm; 1675 struct ifa_msghdr *ifam; 1676 struct if_announcemsghdr *ifan; 1677 union { 1678 struct ieee80211_join_event join; 1679 struct ieee80211_leave_event leave; 1680 struct ieee80211_replay_event replay; 1681 struct ieee80211_michael_event michael; 1682 } ev; 1683 size_t evlen = 0; 1684 1685 if (verbose == 0) 1686 return; 1687 if (rtm->rtm_version != RTM_VERSION) { 1688 (void)printf("routing message version %d not understood\n", 1689 rtm->rtm_version); 1690 return; 1691 } 1692 if (msgtypes[rtm->rtm_type]) 1693 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1694 else 1695 (void)printf("#%d: ", rtm->rtm_type); 1696 (void)printf("len %d, ", rtm->rtm_msglen); 1697 switch (rtm->rtm_type) { 1698 case RTM_IFINFO: 1699 ifm = (struct if_msghdr *)rtm; 1700 (void)printf("if# %d, %s, flags:", ifm->ifm_index, 1701 #ifdef SMALL 1702 "" 1703 #else 1704 linkstate(ifm) 1705 #endif /* SMALL */ 1706 ); 1707 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1708 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1709 break; 1710 case RTM_NEWADDR: 1711 case RTM_DELADDR: 1712 ifam = (struct ifa_msghdr *)rtm; 1713 (void)printf("metric %d, flags:", ifam->ifam_metric); 1714 bprintf(stdout, ifam->ifam_flags, routeflags); 1715 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1716 break; 1717 case RTM_IEEE80211: 1718 ifan = (struct if_announcemsghdr *)rtm; 1719 (void)printf("if# %d, what: ", ifan->ifan_index); 1720 switch (ifan->ifan_what) { 1721 case RTM_IEEE80211_ASSOC: 1722 printf("associate"); 1723 break; 1724 case RTM_IEEE80211_REASSOC: 1725 printf("re-associate"); 1726 break; 1727 case RTM_IEEE80211_DISASSOC: 1728 printf("disassociate"); 1729 break; 1730 case RTM_IEEE80211_SCAN: 1731 printf("scan complete"); 1732 break; 1733 case RTM_IEEE80211_JOIN: 1734 evlen = sizeof(ev.join); 1735 printf("join"); 1736 break; 1737 case RTM_IEEE80211_LEAVE: 1738 evlen = sizeof(ev.leave); 1739 printf("leave"); 1740 break; 1741 case RTM_IEEE80211_MICHAEL: 1742 evlen = sizeof(ev.michael); 1743 printf("michael"); 1744 break; 1745 case RTM_IEEE80211_REPLAY: 1746 evlen = sizeof(ev.replay); 1747 printf("replay"); 1748 break; 1749 default: 1750 evlen = 0; 1751 printf("#%d", ifan->ifan_what); 1752 break; 1753 } 1754 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1755 printf(" (truncated)\n"); 1756 break; 1757 } 1758 (void)memcpy(&ev, (ifan + 1), evlen); 1759 switch (ifan->ifan_what) { 1760 case RTM_IEEE80211_JOIN: 1761 case RTM_IEEE80211_LEAVE: 1762 printf(" mac %" PRIETHER, 1763 PRIETHER_ARGS(ev.join.iev_addr)); 1764 break; 1765 case RTM_IEEE80211_REPLAY: 1766 case RTM_IEEE80211_MICHAEL: 1767 printf(" src %" PRIETHER " dst %" PRIETHER 1768 " cipher %" PRIu8 " keyix %" PRIu8, 1769 PRIETHER_ARGS(ev.replay.iev_src), 1770 PRIETHER_ARGS(ev.replay.iev_dst), 1771 ev.replay.iev_cipher, 1772 ev.replay.iev_keyix); 1773 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1774 printf(" key rsc %#" PRIx64 1775 " frame rsc %#" PRIx64, 1776 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1777 } 1778 break; 1779 default: 1780 break; 1781 } 1782 printf("\n"); 1783 break; 1784 case RTM_IFANNOUNCE: 1785 ifan = (struct if_announcemsghdr *)rtm; 1786 (void)printf("if# %d, what: ", ifan->ifan_index); 1787 switch (ifan->ifan_what) { 1788 case IFAN_ARRIVAL: 1789 printf("arrival"); 1790 break; 1791 case IFAN_DEPARTURE: 1792 printf("departure"); 1793 break; 1794 default: 1795 printf("#%d", ifan->ifan_what); 1796 break; 1797 } 1798 printf("\n"); 1799 break; 1800 default: 1801 (void)printf("pid: %d, seq %d, errno %d, flags:", 1802 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1803 bprintf(stdout, rtm->rtm_flags, routeflags); 1804 pmsg_common(rtm); 1805 } 1806 } 1807 1808 #ifndef SMALL 1809 static void 1810 print_getmsg(struct rt_msghdr *rtm, int msglen) 1811 { 1812 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1813 struct sockaddr_dl *ifp = NULL; 1814 struct sockaddr *sa; 1815 char *cp; 1816 int i; 1817 1818 if (! shortoutput) 1819 (void)printf(" route to: %s\n", 1820 routename((struct sockaddr *) &so_dst, NULL, RTF_HOST)); 1821 if (rtm->rtm_version != RTM_VERSION) { 1822 warnx("routing message version %d not understood", 1823 rtm->rtm_version); 1824 return; 1825 } 1826 if (rtm->rtm_msglen > msglen) { 1827 warnx("message length mismatch, in packet %d, returned %d", 1828 rtm->rtm_msglen, msglen); 1829 } 1830 if (rtm->rtm_errno) { 1831 warn("RTM_GET"); 1832 return; 1833 } 1834 cp = ((char *)(rtm + 1)); 1835 if (rtm->rtm_addrs) 1836 for (i = 1; i; i <<= 1) 1837 if (i & rtm->rtm_addrs) { 1838 sa = (struct sockaddr *)cp; 1839 switch (i) { 1840 case RTA_DST: 1841 dst = sa; 1842 break; 1843 case RTA_GATEWAY: 1844 gate = sa; 1845 break; 1846 case RTA_NETMASK: 1847 mask = sa; 1848 break; 1849 case RTA_IFP: 1850 if (sa->sa_family == AF_LINK && 1851 ((struct sockaddr_dl *)sa)->sdl_nlen) 1852 ifp = (struct sockaddr_dl *)sa; 1853 break; 1854 case RTA_IFA: 1855 ifa = sa; 1856 break; 1857 } 1858 ADVANCE(cp, sa); 1859 } 1860 if (dst && mask) 1861 mask->sa_family = dst->sa_family; /* XXX */ 1862 if (dst && ! shortoutput) 1863 (void)printf("destination: %s\n", 1864 routename(dst, mask, RTF_HOST)); 1865 if (mask && ! shortoutput) { 1866 int savenflag = nflag; 1867 1868 nflag = 1; 1869 (void)printf(" mask: %s\n", 1870 routename(mask, NULL, RTF_HOST)); 1871 nflag = savenflag; 1872 } 1873 if (gate && rtm->rtm_flags & RTF_GATEWAY && ! shortoutput) 1874 (void)printf(" gateway: %s\n", 1875 routename(gate, NULL, RTF_HOST)); 1876 if (ifa && ! shortoutput) 1877 (void)printf(" local addr: %s\n", 1878 routename(ifa, NULL, RTF_HOST)); 1879 if (ifp && ! shortoutput) 1880 (void)printf(" interface: %.*s\n", 1881 ifp->sdl_nlen, ifp->sdl_data); 1882 if (! shortoutput) { 1883 (void)printf(" flags: "); 1884 bprintf(stdout, rtm->rtm_flags, routeflags); 1885 } 1886 1887 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1888 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1889 1890 if (! shortoutput) { 1891 (void)printf("\n%s\n", "\ 1892 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1893 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1894 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1895 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1896 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1897 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1898 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1899 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1900 if (rtm->rtm_rmx.rmx_expire) 1901 rtm->rtm_rmx.rmx_expire -= time(0); 1902 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1903 } 1904 #undef lock 1905 #undef msec 1906 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1907 1908 if ((rtm->rtm_addrs & RTF_GATEWAY) == 0) 1909 rv = 1; 1910 else { 1911 const char *name; 1912 int addrs; 1913 1914 cp = (char *)(rtm + 1); 1915 addrs = rtm->rtm_addrs; 1916 1917 for (i = 1; i; i <<= 1) { 1918 sa = (struct sockaddr *)cp; 1919 if (i == RTF_GATEWAY) { 1920 name = routename(sa, NULL, RTF_HOST); 1921 if (name[0] == '\0') 1922 rv = 1; 1923 else if (shortoutput) 1924 printf("%s\n", name); 1925 } 1926 if (i & addrs) 1927 ADVANCE(cp, sa); 1928 } 1929 } 1930 1931 if (shortoutput) 1932 return; 1933 else if (verbose) 1934 pmsg_common(rtm); 1935 else if (rtm->rtm_addrs &~ RTA_IGN) { 1936 (void)printf("sockaddrs: "); 1937 bprintf(stdout, rtm->rtm_addrs, addrnames); 1938 putchar('\n'); 1939 } 1940 #undef RTA_IGN 1941 } 1942 #endif /* SMALL */ 1943 1944 void 1945 pmsg_common(struct rt_msghdr *rtm) 1946 { 1947 (void)printf("\nlocks: "); 1948 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1949 (void)printf(" inits: "); 1950 bprintf(stdout, rtm->rtm_inits, metricnames); 1951 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1952 } 1953 1954 static void 1955 pmsg_addrs(char *cp, int addrs) 1956 { 1957 struct sockaddr *sa; 1958 int i; 1959 1960 if (addrs != 0) { 1961 (void)printf("\nsockaddrs: "); 1962 bprintf(stdout, addrs, addrnames); 1963 (void)putchar('\n'); 1964 for (i = 1; i; i <<= 1) 1965 if (i & addrs) { 1966 sa = (struct sockaddr *)cp; 1967 (void)printf(" %s", 1968 routename(sa, NULL, RTF_HOST)); 1969 ADVANCE(cp, sa); 1970 } 1971 } 1972 (void)putchar('\n'); 1973 (void)fflush(stdout); 1974 } 1975 1976 static void 1977 bprintf(FILE *fp, int b, u_char *s) 1978 { 1979 int i; 1980 int gotsome = 0; 1981 1982 if (b == 0) 1983 return; 1984 while ((i = *s++) != 0) { 1985 if (b & (1 << (i-1))) { 1986 if (gotsome == 0) 1987 i = '<'; 1988 else 1989 i = ','; 1990 (void)putc(i, fp); 1991 gotsome = 1; 1992 for (; (i = *s) > 32; s++) 1993 (void)putc(i, fp); 1994 } else 1995 while (*s > 32) 1996 s++; 1997 } 1998 if (gotsome) 1999 (void)putc('>', fp); 2000 } 2001 2002 int 2003 keyword(char *cp) 2004 { 2005 struct keytab *kt = keywords; 2006 2007 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 2008 kt++; 2009 return kt->kt_i; 2010 } 2011 2012 static void 2013 sodump(sup su, const char *which) 2014 { 2015 #ifdef INET6 2016 char ntop_buf[NI_MAXHOST]; 2017 #endif 2018 2019 switch (su->sa.sa_family) { 2020 case AF_INET: 2021 (void)printf("%s: inet %s; ", 2022 which, inet_ntoa(su->sin.sin_addr)); 2023 break; 2024 #ifndef SMALL 2025 case AF_APPLETALK: 2026 (void)printf("%s: atalk %d.%d; ", 2027 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 2028 break; 2029 #endif 2030 case AF_LINK: 2031 (void)printf("%s: link %s; ", 2032 which, link_ntoa(&su->sdl)); 2033 break; 2034 #ifndef SMALL 2035 #ifdef INET6 2036 case AF_INET6: 2037 (void)printf("%s: inet6 %s; ", 2038 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 2039 ntop_buf, sizeof(ntop_buf))); 2040 break; 2041 #endif 2042 case AF_ISO: 2043 (void)printf("%s: iso %s; ", 2044 which, iso_ntoa(&su->siso.siso_addr)); 2045 break; 2046 case AF_NS: 2047 (void)printf("%s: xns %s; ", 2048 which, ns_ntoa(su->sns.sns_addr)); 2049 break; 2050 #endif /* SMALL */ 2051 default: 2052 (void)printf("%s: (%d) %s; ", 2053 which, su->sa.sa_family, any_ntoa(&su->sa)); 2054 } 2055 (void)fflush(stdout); 2056 } 2057 2058 /* States*/ 2059 #define VIRGIN 0 2060 #define GOTONE 1 2061 #define GOTTWO 2 2062 /* Inputs */ 2063 #define DIGIT (4*0) 2064 #define END (4*1) 2065 #define DELIM (4*2) 2066 2067 static void 2068 sockaddr(char *addr, struct sockaddr *sa) 2069 { 2070 char *cp = (char *)sa; 2071 int size = sa->sa_len; 2072 char *cplim = cp + size; 2073 int byte = 0, state = VIRGIN, new = 0; 2074 2075 (void)memset(cp, 0, size); 2076 cp++; 2077 do { 2078 if ((*addr >= '0') && (*addr <= '9')) { 2079 new = *addr - '0'; 2080 } else if ((*addr >= 'a') && (*addr <= 'f')) { 2081 new = *addr - 'a' + 10; 2082 } else if ((*addr >= 'A') && (*addr <= 'F')) { 2083 new = *addr - 'A' + 10; 2084 } else if (*addr == 0) 2085 state |= END; 2086 else 2087 state |= DELIM; 2088 addr++; 2089 switch (state /* | INPUT */) { 2090 case GOTTWO | DIGIT: 2091 *cp++ = byte; /*FALLTHROUGH*/ 2092 case VIRGIN | DIGIT: 2093 state = GOTONE; byte = new; continue; 2094 case GOTONE | DIGIT: 2095 state = GOTTWO; byte = new + (byte << 4); continue; 2096 default: /* | DELIM */ 2097 state = VIRGIN; *cp++ = byte; byte = 0; continue; 2098 case GOTONE | END: 2099 case GOTTWO | END: 2100 *cp++ = byte; /* FALLTHROUGH */ 2101 case VIRGIN | END: 2102 break; 2103 } 2104 break; 2105 } while (cp < cplim); 2106 sa->sa_len = cp - (char *)sa; 2107 } 2108
Indexes created Mon Sep 29 03:10:08 GMT 2025