route.c revision 1.82
1 /* $NetBSD: route.c,v 1.82 2005/06/26 21:28:15 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\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 1.82 2005/06/26 21:28:15 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 <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 void usage(const char *)__attribute__((__noreturn__)); 81 static char *any_ntoa(const struct sockaddr *); 82 static void set_metric(char *, int); 83 static int newroute(int, char **); 84 static void inet_makenetandmask(u_int32_t, struct sockaddr_in *); 85 #ifdef INET6 86 static int inet6_makenetandmask(struct sockaddr_in6 *); 87 #endif 88 static int getaddr(int, char *, struct hostent **); 89 static int flushroutes(int, char *[], int); 90 #ifndef SMALL 91 static int prefixlen(const char *); 92 static int x25_makemask(void); 93 static void interfaces(void); 94 static void monitor(void); 95 static void print_getmsg(struct rt_msghdr *, int); 96 static const char *linkstate(struct if_msghdr *); 97 #endif /* SMALL */ 98 static int rtmsg(int, int ); 99 static void mask_addr(void); 100 static void print_rtmsg(struct rt_msghdr *, int); 101 static void pmsg_common(struct rt_msghdr *); 102 static void pmsg_addrs(char *, int); 103 static void bprintf(FILE *, int, u_char *); 104 static int keyword(char *); 105 static void sodump(sup, const char *); 106 static void sockaddr(char *, struct sockaddr *); 107 108 union sockunion { 109 struct sockaddr sa; 110 struct sockaddr_in sin; 111 #ifdef INET6 112 struct sockaddr_in6 sin6; 113 #endif 114 struct sockaddr_at sat; 115 struct sockaddr_dl sdl; 116 #ifndef SMALL 117 struct sockaddr_ns sns; 118 struct sockaddr_iso siso; 119 struct sockaddr_x25 sx25; 120 #endif /* SMALL */ 121 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 122 123 int pid, rtm_addrs; 124 int sock; 125 int forcehost, forcenet, doflush, nflag, af, qflag, tflag; 126 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 127 int locking, lockrest, debugonly, shortoutput, rv; 128 struct rt_metrics rt_metrics; 129 u_int32_t rtm_inits; 130 short ns_nullh[] = {0,0,0}; 131 short ns_bh[] = {-1,-1,-1}; 132 133 134 static void 135 usage(const char *cp) 136 { 137 138 if (cp) 139 warnx("botched keyword: %s", cp); 140 (void) fprintf(stderr, 141 "Usage: %s [ -fnqvs ] cmd [[ -<qualifers> ] args ]\n", 142 getprogname()); 143 exit(1); 144 /* NOTREACHED */ 145 } 146 147 #define PRIETHER "02x:%02x:%02x:%02x:%02x:%02x" 148 #define PRIETHER_ARGS(__enaddr) (__enaddr)[0], (__enaddr)[1], (__enaddr)[2], \ 149 (__enaddr)[3], (__enaddr)[4], (__enaddr)[5] 150 #define ROUNDUP(a) \ 151 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 152 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 153 154 int 155 main(int argc, char **argv) 156 { 157 int ch; 158 159 if (argc < 2) 160 usage(NULL); 161 162 while ((ch = getopt(argc, argv, "fnqvdts")) != -1) 163 switch(ch) { 164 case 'f': 165 doflush = 1; 166 break; 167 case 'n': 168 nflag = 1; 169 break; 170 case 'q': 171 qflag = 1; 172 break; 173 case 'v': 174 verbose = 1; 175 break; 176 case 't': 177 tflag = 1; 178 break; 179 case 'd': 180 debugonly = 1; 181 break; 182 case 's': 183 shortoutput = 1; 184 break; 185 case '?': 186 default: 187 usage(NULL); 188 /*NOTREACHED*/ 189 } 190 argc -= optind; 191 argv += optind; 192 193 pid = getpid(); 194 if (tflag) 195 sock = open("/dev/null", O_WRONLY, 0); 196 else 197 sock = socket(PF_ROUTE, SOCK_RAW, 0); 198 if (sock < 0) 199 err(1, "socket"); 200 201 if (*argv == NULL) { 202 if (doflush) 203 ch = K_FLUSH; 204 else 205 goto no_cmd; 206 } else 207 ch = keyword(*argv); 208 209 switch (ch) { 210 #ifndef SMALL 211 case K_GET: 212 #endif /* SMALL */ 213 case K_CHANGE: 214 case K_ADD: 215 case K_DELETE: 216 if (doflush) 217 (void)flushroutes(1, argv, 0); 218 return newroute(argc, argv); 219 220 case K_SHOW: 221 show(argc, argv); 222 return 0; 223 224 #ifndef SMALL 225 case K_MONITOR: 226 monitor(); 227 return 0; 228 229 #endif /* SMALL */ 230 case K_FLUSH: 231 return flushroutes(argc, argv, 0); 232 233 case K_FLUSHALL: 234 return flushroutes(argc, argv, 1); 235 no_cmd: 236 default: 237 usage(*argv); 238 /*NOTREACHED*/ 239 } 240 } 241 242 /* 243 * Purge all entries in the routing tables not 244 * associated with network interfaces. 245 */ 246 static int 247 flushroutes(int argc, char *argv[], int doall) 248 { 249 size_t needed; 250 int mib[6], rlen, seqno; 251 char *buf, *next, *lim; 252 struct rt_msghdr *rtm; 253 254 af = 0; 255 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 256 if (argc > 1) { 257 argv++; 258 if (argc == 2 && **argv == '-') 259 switch (keyword(*argv + 1)) { 260 case K_INET: 261 af = AF_INET; 262 break; 263 #ifdef INET6 264 case K_INET6: 265 af = AF_INET6; 266 break; 267 #endif 268 #ifndef SMALL 269 case K_ATALK: 270 af = AF_APPLETALK; 271 break; 272 case K_XNS: 273 af = AF_NS; 274 break; 275 #endif /* SMALL */ 276 case K_LINK: 277 af = AF_LINK; 278 break; 279 #ifndef SMALL 280 case K_ISO: 281 case K_OSI: 282 af = AF_ISO; 283 break; 284 case K_X25: 285 af = AF_CCITT; 286 #endif /* SMALL */ 287 default: 288 goto bad; 289 } else 290 bad: usage(*argv); 291 } 292 mib[0] = CTL_NET; 293 mib[1] = PF_ROUTE; 294 mib[2] = 0; /* protocol */ 295 mib[3] = 0; /* wildcard address family */ 296 mib[4] = NET_RT_DUMP; 297 mib[5] = 0; /* no flags */ 298 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 299 err(1, "route-sysctl-estimate"); 300 if (needed == 0) 301 return 0; 302 if ((buf = malloc(needed)) == NULL) 303 err(1, "malloc"); 304 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 305 err(1, "actual retrieval of routing table"); 306 lim = buf + needed; 307 if (verbose) { 308 (void) printf("Examining routing table from sysctl\n"); 309 if (af) printf("(address family %s)\n", (*argv + 1)); 310 } 311 seqno = 0; /* ??? */ 312 for (next = buf; next < lim; next += rtm->rtm_msglen) { 313 rtm = (struct rt_msghdr *)next; 314 if (verbose) 315 print_rtmsg(rtm, rtm->rtm_msglen); 316 if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC | 317 RTF_LLINFO)) && !doall) 318 continue; 319 if (af) { 320 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 321 322 if (sa->sa_family != af) 323 continue; 324 } 325 if (debugonly) 326 continue; 327 rtm->rtm_type = RTM_DELETE; 328 rtm->rtm_seq = seqno; 329 rlen = write(sock, next, rtm->rtm_msglen); 330 if (rlen < (int)rtm->rtm_msglen) { 331 warn("write to routing socket, got %d for rlen", rlen); 332 break; 333 } 334 seqno++; 335 if (qflag) 336 continue; 337 if (verbose) 338 print_rtmsg(rtm, rlen); 339 else { 340 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 341 (void) printf("%-20.20s ", 342 routename(sa, NULL, rtm->rtm_flags)); 343 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 344 (void) printf("%-20.20s ", 345 routename(sa, NULL, RTF_HOST)); 346 (void) printf("done\n"); 347 } 348 } 349 return 0; 350 } 351 352 353 static char hexlist[] = "0123456789abcdef"; 354 355 static char * 356 any_ntoa(const struct sockaddr *sa) 357 { 358 static char obuf[3 * 256]; 359 const char *in; 360 char *out; 361 int len; 362 363 #if __GNUC__ > 2 364 len = sa->sa_len - offsetof(struct sockaddr, sa_data); 365 #else 366 len = sa->sa_len; 367 #endif 368 in = sa->sa_data; 369 out = obuf; 370 371 do { 372 *out++ = hexlist[(*in >> 4) & 15]; 373 *out++ = hexlist[(*in++) & 15]; 374 *out++ = '.'; 375 } while (--len > 0); 376 out[-1] = '\0'; 377 return obuf; 378 } 379 380 381 int 382 netmask_length(struct sockaddr *nm, int family) 383 { 384 static int 385 /* number of bits in a nibble */ 386 _t[] = { 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4 }, 387 /* good nibbles are 1111, 1110, 1100, 1000, 0000 */ 388 _g[] = { 1,0,0,0,0,0,0,0,1,0,0,0,1,0,1,1 }; 389 int mask, good, zeroes, maskbytes, bit, i; 390 unsigned char *maskdata; 391 392 if (nm == NULL) 393 return 0; 394 395 mask = 0; 396 good = 1; 397 zeroes = 0; 398 399 switch (family) { 400 case AF_INET: { 401 struct sockaddr_in *nsin = (struct sockaddr_in *)nm; 402 maskdata = (unsigned char *) &nsin->sin_addr; 403 maskbytes = nsin->sin_len - 404 ((caddr_t)&nsin->sin_addr - (caddr_t)nsin); 405 break; 406 } 407 case AF_INET6: { 408 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nm; 409 maskdata = (unsigned char *) &sin6->sin6_addr; 410 maskbytes = sin6->sin6_len - 411 ((caddr_t)&sin6->sin6_addr - (caddr_t)sin6); 412 break; 413 } 414 default: 415 return 0; 416 } 417 418 /* 419 * Count the bits in the nibbles of the mask, and marking the 420 * netmask as not good (or at best, non-standard and very 421 * discouraged, in the case of AF_INET) if we find either of 422 * a nibble with non-contiguous bits, or a non-zero nibble 423 * after we've found a zero nibble. 424 */ 425 for (i = 0; i < maskbytes; i++) { 426 /* high nibble */ 427 mask += bit = _t[maskdata[i] >> 4]; 428 good &= _g[maskdata[i] >> 4]; 429 if (zeroes && bit) 430 good = 0; 431 if (bit == 0) 432 zeroes = 1; 433 /* low nibble */ 434 mask += bit = _t[maskdata[i] & 0xf]; 435 good &= _g[maskdata[i] & 0xf]; 436 if (zeroes && bit) 437 good = 0; 438 if (bit == 0) 439 zeroes = 1; 440 } 441 442 /* 443 * Always return the number of bits found, but as a negative 444 * if the mask wasn't one we like. 445 */ 446 return good ? mask : -mask; 447 } 448 449 char * 450 netmask_string(struct sockaddr *mask, int len) 451 { 452 static char smask[16]; 453 454 if (len >= 0) 455 snprintf(smask, sizeof(smask), "%d", len); 456 else { 457 /* XXX AF_INET only?! */ 458 struct sockaddr_in nsin; 459 460 memset(&nsin, 0, sizeof(nsin)); 461 memcpy(&nsin, mask, mask->sa_len); 462 snprintf(smask, sizeof(smask), "%s", inet_ntoa(nsin.sin_addr)); 463 } 464 465 return smask; 466 } 467 468 469 const char * 470 routename(struct sockaddr *sa, struct sockaddr *nm, int flags) 471 { 472 const char *cp; 473 static char line[50]; 474 struct hostent *hp; 475 static char domain[MAXHOSTNAMELEN + 1]; 476 static int first = 1; 477 struct in_addr in; 478 int nml; 479 480 if ((flags & RTF_HOST) == 0) 481 return netname(sa, nm); 482 483 if (first) { 484 first = 0; 485 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 486 (cp = strchr(domain, '.'))) 487 (void)strlcpy(domain, cp + 1, sizeof(domain)); 488 else 489 domain[0] = 0; 490 } 491 492 if (sa->sa_len == 0) 493 strlcpy(line, "default", sizeof(line)); 494 else switch (sa->sa_family) { 495 496 case AF_INET: 497 in = ((struct sockaddr_in *)sa)->sin_addr; 498 nml = netmask_length(nm, AF_INET); 499 500 cp = 0; 501 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) { 502 if (nml == 0) 503 cp = "default"; 504 else { 505 static char notdefault[sizeof(NOTDEFSTRING)]; 506 507 snprintf(notdefault, sizeof(notdefault), 508 "0.0.0.0/%s", netmask_string(nm, nml)); 509 cp = notdefault; 510 } 511 } 512 if (cp == 0 && !nflag) { 513 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 514 AF_INET); 515 if (hp) { 516 char *ccp; 517 if ((ccp = strchr(hp->h_name, '.')) && 518 !strcmp(ccp + 1, domain)) 519 *ccp = 0; 520 cp = hp->h_name; 521 } 522 } 523 if (cp) 524 (void)strlcpy(line, cp, sizeof(line)); 525 else 526 (void)strlcpy(line, inet_ntoa(in), sizeof(line)); 527 break; 528 529 case AF_LINK: 530 return (link_ntoa((struct sockaddr_dl *)sa)); 531 532 #ifndef SMALL 533 #ifdef INET6 534 case AF_INET6: 535 { 536 struct sockaddr_in6 sin6; 537 int niflags; 538 539 niflags = 0; 540 if (nflag) 541 niflags |= NI_NUMERICHOST; 542 memset(&sin6, 0, sizeof(sin6)); 543 memcpy(&sin6, sa, sa->sa_len); 544 sin6.sin6_len = sizeof(struct sockaddr_in6); 545 sin6.sin6_family = AF_INET6; 546 #ifdef __KAME__ 547 if (sa->sa_len == sizeof(struct sockaddr_in6) && 548 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 549 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 550 sin6.sin6_scope_id == 0) { 551 sin6.sin6_scope_id = 552 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 553 sin6.sin6_addr.s6_addr[2] = 0; 554 sin6.sin6_addr.s6_addr[3] = 0; 555 } 556 #endif 557 nml = netmask_length(nm, AF_INET6); 558 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 559 if (nml == 0) 560 strlcpy(line, "::", sizeof(line)); 561 else 562 /* noncontiguous never happens in ipv6 */ 563 snprintf(line, sizeof(line), "::/%d", nml); 564 } 565 566 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 567 line, sizeof(line), NULL, 0, niflags) != 0) 568 strlcpy(line, "invalid", sizeof(line)); 569 break; 570 } 571 #endif 572 573 case AF_NS: 574 return (ns_print((struct sockaddr_ns *)sa)); 575 576 case AF_ISO: 577 (void)snprintf(line, sizeof line, "iso %s", 578 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 579 break; 580 581 case AF_APPLETALK: 582 (void) snprintf(line, sizeof(line), "atalk %d.%d", 583 ((struct sockaddr_at *)sa)->sat_addr.s_net, 584 ((struct sockaddr_at *)sa)->sat_addr.s_node); 585 break; 586 #endif /* SMALL */ 587 588 default: 589 (void)snprintf(line, sizeof line, "(%d) %s", 590 sa->sa_family, any_ntoa(sa)); 591 break; 592 593 } 594 return (line); 595 } 596 597 /* 598 * Return the name of the network whose address is given. 599 * The address is assumed to be that of a net or subnet, not a host. 600 */ 601 const char * 602 netname(struct sockaddr *sa, struct sockaddr *nm) 603 { 604 const char *cp = 0; 605 static char line[50]; 606 struct netent *np = 0; 607 u_int32_t net, mask; 608 u_int32_t i; 609 int subnetshift, nml; 610 struct in_addr in; 611 612 switch (sa->sa_family) { 613 614 case AF_INET: 615 in = ((struct sockaddr_in *)sa)->sin_addr; 616 i = ntohl(in.s_addr); 617 nml = netmask_length(nm, AF_INET); 618 if (i == 0) { 619 if (nml == 0) 620 cp = "default"; 621 else { 622 static char notdefault[sizeof(NOTDEFSTRING)]; 623 624 snprintf(notdefault, sizeof(notdefault), 625 "0.0.0.0/%s", netmask_string(nm, nml)); 626 cp = notdefault; 627 } 628 } 629 else if (!nflag) { 630 if (IN_CLASSA(i)) { 631 mask = IN_CLASSA_NET; 632 subnetshift = 8; 633 } else if (IN_CLASSB(i)) { 634 mask = IN_CLASSB_NET; 635 subnetshift = 8; 636 } else { 637 mask = IN_CLASSC_NET; 638 subnetshift = 4; 639 } 640 /* 641 * If there are more bits than the standard mask 642 * would suggest, subnets must be in use. 643 * Guess at the subnet mask, assuming reasonable 644 * width subnet fields. 645 */ 646 while (i &~ mask) 647 mask = (int32_t)mask >> subnetshift; 648 net = i & mask; 649 while ((mask & 1) == 0) 650 mask >>= 1, net >>= 1; 651 np = getnetbyaddr(net, AF_INET); 652 if (np) 653 cp = np->n_name; 654 } 655 if (cp) 656 (void)strlcpy(line, cp, sizeof(line)); 657 else { 658 #if 0 /* XXX - This is silly... */ 659 #define C(x) ((x) & 0xff) 660 if ((i & 0xffffff) == 0) 661 (void)snprintf(line, sizeof line, "%u", 662 C(i >> 24)); 663 else if ((i & 0xffff) == 0) 664 (void)snprintf(line, sizeof line, "%u.%u", 665 C(i >> 24), C(i >> 16)); 666 else if ((i & 0xff) == 0) 667 (void)snprintf(line, sizeof line, "%u.%u.%u", 668 C(i >> 24), C(i >> 16), C(i >> 8)); 669 else 670 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 671 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 672 #undef C 673 #else /* XXX */ 674 if (nml == 0) 675 strlcpy(line, inet_ntoa(in), sizeof(line)); 676 else 677 snprintf(line, sizeof(line), "%s/%d", inet_ntoa(in), nml); 678 #endif /* XXX */ 679 } 680 break; 681 682 case AF_LINK: 683 return (link_ntoa((struct sockaddr_dl *)sa)); 684 685 #ifndef SMALL 686 #ifdef INET6 687 case AF_INET6: 688 { 689 struct sockaddr_in6 sin6; 690 int niflags; 691 692 niflags = 0; 693 if (nflag) 694 niflags |= NI_NUMERICHOST; 695 memset(&sin6, 0, sizeof(sin6)); 696 memcpy(&sin6, sa, sa->sa_len); 697 sin6.sin6_len = sizeof(struct sockaddr_in6); 698 sin6.sin6_family = AF_INET6; 699 #ifdef __KAME__ 700 if (sa->sa_len == sizeof(struct sockaddr_in6) && 701 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 702 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 703 sin6.sin6_scope_id == 0) { 704 sin6.sin6_scope_id = 705 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 706 sin6.sin6_addr.s6_addr[2] = 0; 707 sin6.sin6_addr.s6_addr[3] = 0; 708 } 709 #endif 710 nml = netmask_length(nm, AF_INET6); 711 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 712 if (nml == 0) 713 strlcpy(line, "::", sizeof(line)); 714 else 715 /* noncontiguous never happens in ipv6 */ 716 snprintf(line, sizeof(line), "::/%d", nml); 717 } 718 719 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 720 line, sizeof(line), NULL, 0, niflags) != 0) 721 strlcpy(line, "invalid", sizeof(line)); 722 break; 723 } 724 #endif 725 726 case AF_NS: 727 return (ns_print((struct sockaddr_ns *)sa)); 728 729 case AF_ISO: 730 (void)snprintf(line, sizeof line, "iso %s", 731 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 732 break; 733 734 case AF_APPLETALK: 735 (void) snprintf(line, sizeof(line), "atalk %d.%d", 736 ((struct sockaddr_at *)sa)->sat_addr.s_net, 737 ((struct sockaddr_at *)sa)->sat_addr.s_node); 738 break; 739 #endif /* SMALL */ 740 741 default: 742 (void)snprintf(line, sizeof line, "af %d: %s", 743 sa->sa_family, any_ntoa(sa)); 744 break; 745 } 746 return (line); 747 } 748 749 static void 750 set_metric(char *value, int key) 751 { 752 int flag = 0; 753 u_long noval, *valp = &noval; 754 755 switch (key) { 756 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 757 caseof(K_MTU, RTV_MTU, rmx_mtu); 758 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 759 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 760 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 761 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 762 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 763 caseof(K_RTT, RTV_RTT, rmx_rtt); 764 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 765 } 766 rtm_inits |= flag; 767 if (lockrest || locking) 768 rt_metrics.rmx_locks |= flag; 769 if (locking) 770 locking = 0; 771 *valp = atoi(value); 772 } 773 774 static int 775 newroute(int argc, char **argv) 776 { 777 const char *cmd, *dest = "", *gateway = ""; 778 const char *error; 779 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 780 int key; 781 struct hostent *hp = 0; 782 783 cmd = argv[0]; 784 af = 0; 785 if (*cmd != 'g') 786 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 787 while (--argc > 0) { 788 if (**(++argv)== '-') { 789 switch (key = keyword(1 + *argv)) { 790 791 case K_SA: 792 af = PF_ROUTE; 793 aflen = sizeof(union sockunion); 794 break; 795 796 #ifndef SMALL 797 case K_ATALK: 798 af = AF_APPLETALK; 799 aflen = sizeof(struct sockaddr_at); 800 break; 801 #endif 802 803 case K_INET: 804 af = AF_INET; 805 aflen = sizeof(struct sockaddr_in); 806 break; 807 808 #ifdef INET6 809 case K_INET6: 810 af = AF_INET6; 811 aflen = sizeof(struct sockaddr_in6); 812 break; 813 #endif 814 815 case K_LINK: 816 af = AF_LINK; 817 aflen = sizeof(struct sockaddr_dl); 818 break; 819 820 #ifndef SMALL 821 case K_OSI: 822 case K_ISO: 823 af = AF_ISO; 824 aflen = sizeof(struct sockaddr_iso); 825 break; 826 827 case K_X25: 828 af = AF_CCITT; 829 aflen = sizeof(struct sockaddr_x25); 830 break; 831 832 case K_XNS: 833 af = AF_NS; 834 aflen = sizeof(struct sockaddr_ns); 835 break; 836 #endif /* SMALL */ 837 838 case K_IFACE: 839 case K_INTERFACE: 840 iflag++; 841 break; 842 case K_NOSTATIC: 843 flags &= ~RTF_STATIC; 844 break; 845 case K_LLINFO: 846 flags |= RTF_LLINFO; 847 break; 848 case K_LOCK: 849 locking = 1; 850 break; 851 case K_LOCKREST: 852 lockrest = 1; 853 break; 854 case K_HOST: 855 forcehost++; 856 break; 857 case K_REJECT: 858 flags |= RTF_REJECT; 859 break; 860 case K_BLACKHOLE: 861 flags |= RTF_BLACKHOLE; 862 break; 863 case K_CLONED: 864 flags |= RTF_CLONED; 865 break; 866 case K_PROTO1: 867 flags |= RTF_PROTO1; 868 break; 869 case K_PROTO2: 870 flags |= RTF_PROTO2; 871 break; 872 case K_CLONING: 873 flags |= RTF_CLONING; 874 break; 875 case K_XRESOLVE: 876 flags |= RTF_XRESOLVE; 877 break; 878 case K_STATIC: 879 flags |= RTF_STATIC; 880 break; 881 case K_IFA: 882 if (!--argc) 883 usage(1+*argv); 884 (void) getaddr(RTA_IFA, *++argv, 0); 885 break; 886 case K_IFP: 887 if (!--argc) 888 usage(1+*argv); 889 (void) getaddr(RTA_IFP, *++argv, 0); 890 break; 891 case K_GENMASK: 892 if (!--argc) 893 usage(1+*argv); 894 (void) getaddr(RTA_GENMASK, *++argv, 0); 895 break; 896 case K_GATEWAY: 897 if (!--argc) 898 usage(1+*argv); 899 (void) getaddr(RTA_GATEWAY, *++argv, 0); 900 break; 901 case K_DST: 902 if (!--argc) 903 usage(1+*argv); 904 ishost = getaddr(RTA_DST, *++argv, &hp); 905 dest = *argv; 906 break; 907 case K_NETMASK: 908 if (!--argc) 909 usage(1+*argv); 910 (void) getaddr(RTA_NETMASK, *++argv, 0); 911 /* FALLTHROUGH */ 912 case K_NET: 913 forcenet++; 914 break; 915 case K_PREFIXLEN: 916 if (!--argc) 917 usage(1+*argv); 918 ishost = prefixlen(*++argv); 919 break; 920 case K_MTU: 921 case K_HOPCOUNT: 922 case K_EXPIRE: 923 case K_RECVPIPE: 924 case K_SENDPIPE: 925 case K_SSTHRESH: 926 case K_RTT: 927 case K_RTTVAR: 928 if (!--argc) 929 usage(1+*argv); 930 set_metric(*++argv, key); 931 break; 932 default: 933 usage(1+*argv); 934 } 935 } else { 936 if ((rtm_addrs & RTA_DST) == 0) { 937 dest = *argv; 938 ishost = getaddr(RTA_DST, *argv, &hp); 939 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 940 gateway = *argv; 941 (void) getaddr(RTA_GATEWAY, *argv, &hp); 942 } else { 943 ret = atoi(*argv); 944 945 if (ret == 0) { 946 if (strcmp(*argv, "0") == 0) { 947 if (!qflag) { 948 warnx("%s, %s", 949 "old usage of trailing 0", 950 "assuming route to if"); 951 } 952 } else 953 usage((char *)NULL); 954 iflag = 1; 955 continue; 956 } else if (ret > 0 && ret < 10) { 957 if (!qflag) { 958 warnx("%s, %s", 959 "old usage of trailing digit", 960 "assuming route via gateway"); 961 } 962 iflag = 0; 963 continue; 964 } 965 (void) getaddr(RTA_NETMASK, *argv, 0); 966 } 967 } 968 } 969 if (forcehost && forcenet) 970 errx(1, "-host and -net conflict"); 971 else if (forcehost) 972 ishost = 1; 973 else if (forcenet) 974 ishost = 0; 975 flags |= RTF_UP; 976 if (ishost) 977 flags |= RTF_HOST; 978 if (iflag == 0) 979 flags |= RTF_GATEWAY; 980 for (attempts = 1; ; attempts++) { 981 errno = 0; 982 if ((ret = rtmsg(*cmd, flags)) == 0) 983 break; 984 if (errno != ENETUNREACH && errno != ESRCH) 985 break; 986 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 987 hp->h_addr_list++; 988 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 989 hp->h_length); 990 } else 991 break; 992 } 993 if (*cmd == 'g') 994 return rv; 995 oerrno = errno; 996 if (!qflag) { 997 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 998 if (*gateway) { 999 (void) printf(": gateway %s", gateway); 1000 if (attempts > 1 && ret == 0 && af == AF_INET) 1001 (void) printf(" (%s)", 1002 inet_ntoa(so_gate.sin.sin_addr)); 1003 } 1004 if (ret == 0) 1005 (void) printf("\n"); 1006 } 1007 if (ret != 0) { 1008 switch (oerrno) { 1009 case ESRCH: 1010 error = "not in table"; 1011 break; 1012 case EBUSY: 1013 error = "entry in use"; 1014 break; 1015 case ENOBUFS: 1016 error = "routing table overflow"; 1017 break; 1018 default: 1019 error = strerror(oerrno); 1020 break; 1021 } 1022 (void) printf(": %s\n", error); 1023 return 1; 1024 } 1025 return 0; 1026 } 1027 1028 static void 1029 inet_makenetandmask(u_int32_t net, struct sockaddr_in *isin) 1030 { 1031 u_int32_t addr, mask = 0; 1032 char *cp; 1033 1034 rtm_addrs |= RTA_NETMASK; 1035 if (net == 0) 1036 mask = addr = 0; 1037 else if (net < 128) { 1038 addr = net << IN_CLASSA_NSHIFT; 1039 mask = IN_CLASSA_NET; 1040 } else if (net < 192) { 1041 addr = net << IN_CLASSA_NSHIFT; 1042 mask = IN_CLASSB_NET; 1043 } else if (net < 224) { 1044 addr = net << IN_CLASSA_NSHIFT; 1045 mask = IN_CLASSC_NET; 1046 } else if (net < 256) { 1047 addr = net << IN_CLASSA_NSHIFT; 1048 mask = IN_CLASSD_NET; 1049 } else if (net < 49152) { /* 192 * 256 */ 1050 addr = net << IN_CLASSB_NSHIFT; 1051 mask = IN_CLASSB_NET; 1052 } else if (net < 57344) { /* 224 * 256 */ 1053 addr = net << IN_CLASSB_NSHIFT; 1054 mask = IN_CLASSC_NET; 1055 } else if (net < 65536) { 1056 addr = net << IN_CLASSB_NSHIFT; 1057 mask = IN_CLASSB_NET; 1058 } else if (net < 14680064L) { /* 224 * 65536 */ 1059 addr = net << IN_CLASSC_NSHIFT; 1060 mask = IN_CLASSC_NET; 1061 } else if (net < 16777216L) { 1062 addr = net << IN_CLASSC_NSHIFT; 1063 mask = IN_CLASSD_NET; 1064 } else { 1065 addr = net; 1066 if ((addr & IN_CLASSA_HOST) == 0) 1067 mask = IN_CLASSA_NET; 1068 else if ((addr & IN_CLASSB_HOST) == 0) 1069 mask = IN_CLASSB_NET; 1070 else if ((addr & IN_CLASSC_HOST) == 0) 1071 mask = IN_CLASSC_NET; 1072 else 1073 mask = -1; 1074 } 1075 isin->sin_addr.s_addr = htonl(addr); 1076 isin = &so_mask.sin; 1077 isin->sin_addr.s_addr = htonl(mask); 1078 isin->sin_len = 0; 1079 isin->sin_family = 0; 1080 cp = (char *)(&isin->sin_addr + 1); 1081 while (*--cp == 0 && cp > (char *)isin) 1082 ; 1083 isin->sin_len = 1 + cp - (char *)isin; 1084 } 1085 1086 #ifdef INET6 1087 /* 1088 * XXX the function may need more improvement... 1089 */ 1090 static int 1091 inet6_makenetandmask(struct sockaddr_in6 *sin6) 1092 { 1093 const char *plen; 1094 struct in6_addr in6; 1095 1096 plen = NULL; 1097 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 1098 sin6->sin6_scope_id == 0) { 1099 plen = "0"; 1100 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 1101 /* aggregatable global unicast - RFC2374 */ 1102 memset(&in6, 0, sizeof(in6)); 1103 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 1104 plen = "64"; 1105 } 1106 1107 if (!plen || strcmp(plen, "128") == 0) 1108 return 1; 1109 else { 1110 rtm_addrs |= RTA_NETMASK; 1111 (void)prefixlen(plen); 1112 return 0; 1113 } 1114 } 1115 #endif 1116 1117 /* 1118 * Interpret an argument as a network address of some kind, 1119 * returning 1 if a host address, 0 if a network address. 1120 */ 1121 static int 1122 getaddr(int which, char *s, struct hostent **hpp) 1123 { 1124 sup su; 1125 struct hostent *hp; 1126 struct netent *np; 1127 u_int32_t val; 1128 char *t; 1129 int afamily; /* local copy of af so we can change it */ 1130 1131 if (af == 0) { 1132 af = AF_INET; 1133 aflen = sizeof(struct sockaddr_in); 1134 } 1135 afamily = af; 1136 rtm_addrs |= which; 1137 switch (which) { 1138 case RTA_DST: 1139 su = &so_dst; 1140 break; 1141 case RTA_GATEWAY: 1142 su = &so_gate; 1143 break; 1144 case RTA_NETMASK: 1145 su = &so_mask; 1146 break; 1147 case RTA_GENMASK: 1148 su = &so_genmask; 1149 break; 1150 case RTA_IFP: 1151 su = &so_ifp; 1152 afamily = AF_LINK; 1153 break; 1154 case RTA_IFA: 1155 su = &so_ifa; 1156 su->sa.sa_family = af; 1157 break; 1158 default: 1159 su = NULL; 1160 usage("Internal Error"); 1161 /*NOTREACHED*/ 1162 } 1163 su->sa.sa_len = aflen; 1164 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1165 if (strcmp(s, "default") == 0) { 1166 switch (which) { 1167 case RTA_DST: 1168 forcenet++; 1169 (void) getaddr(RTA_NETMASK, s, 0); 1170 break; 1171 case RTA_NETMASK: 1172 case RTA_GENMASK: 1173 su->sa.sa_len = 0; 1174 } 1175 return (0); 1176 } 1177 switch (afamily) { 1178 #ifndef SMALL 1179 #ifdef INET6 1180 case AF_INET6: 1181 { 1182 struct addrinfo hints, *res; 1183 char *slash = 0; 1184 1185 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 1186 *slash = '\0'; 1187 memset(&hints, 0, sizeof(hints)); 1188 hints.ai_family = afamily; /*AF_INET6*/ 1189 hints.ai_flags = AI_NUMERICHOST; 1190 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1191 if (getaddrinfo(s, "0", &hints, &res) != 0) { 1192 hints.ai_flags = 0; 1193 if (slash) { 1194 *slash = '/'; 1195 slash = 0; 1196 } 1197 if (getaddrinfo(s, "0", &hints, &res) != 0) 1198 errx(1, "bad value: %s", s); 1199 } 1200 if (slash) 1201 *slash = '/'; 1202 if (sizeof(su->sin6) != res->ai_addrlen) 1203 errx(1, "%s: bad value", s); 1204 if (res->ai_next) 1205 errx(1, "address resolved to multiple values: %s", s); 1206 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1207 freeaddrinfo(res); 1208 #ifdef __KAME__ 1209 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1210 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1211 su->sin6.sin6_scope_id) { 1212 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1213 htons(su->sin6.sin6_scope_id); 1214 su->sin6.sin6_scope_id = 0; 1215 } 1216 #endif 1217 if (hints.ai_flags == AI_NUMERICHOST) { 1218 if (slash) 1219 return (prefixlen(slash + 1)); 1220 if (which == RTA_DST) 1221 return (inet6_makenetandmask(&su->sin6)); 1222 return (0); 1223 } else 1224 return (1); 1225 } 1226 #endif 1227 1228 case AF_NS: 1229 if (which == RTA_DST) { 1230 struct sockaddr_ns *sms = &(so_mask.sns); 1231 memset(sms, 0, sizeof(*sms)); 1232 sms->sns_family = 0; 1233 sms->sns_len = 6; 1234 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1235 rtm_addrs |= RTA_NETMASK; 1236 } 1237 su->sns.sns_addr = ns_addr(s); 1238 return (!ns_nullhost(su->sns.sns_addr)); 1239 1240 case AF_OSI: 1241 su->siso.siso_addr = *iso_addr(s); 1242 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1243 char *cp = (char *)TSEL(&su->siso); 1244 su->siso.siso_nlen = 0; 1245 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1246 su->siso.siso_len = 1 + cp - (char *)su; 1247 } 1248 return (1); 1249 1250 case AF_CCITT: 1251 ccitt_addr(s, &su->sx25); 1252 return (which == RTA_DST ? x25_makemask() : 1); 1253 #endif /* SMALL */ 1254 1255 case PF_ROUTE: 1256 su->sa.sa_len = sizeof(*su); 1257 sockaddr(s, &su->sa); 1258 return (1); 1259 1260 #ifndef SMALL 1261 case AF_APPLETALK: 1262 t = strchr (s, '.'); 1263 if (!t) { 1264 badataddr: 1265 errx(1, "bad address: %s", s); 1266 } 1267 val = atoi (s); 1268 if (val > 65535) 1269 goto badataddr; 1270 su->sat.sat_addr.s_net = val; 1271 val = atoi (t); 1272 if (val > 256) 1273 goto badataddr; 1274 su->sat.sat_addr.s_node = val; 1275 rtm_addrs |= RTA_NETMASK; 1276 return(forcehost || su->sat.sat_addr.s_node != 0); 1277 #endif 1278 1279 case AF_LINK: 1280 link_addr(s, &su->sdl); 1281 return (1); 1282 1283 case AF_INET: 1284 default: 1285 break; 1286 } 1287 1288 if (hpp == NULL) 1289 hpp = &hp; 1290 *hpp = NULL; 1291 1292 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 1293 *t = '\0'; 1294 if (forcenet == 0) { 1295 if ((val = inet_addr(s)) != INADDR_NONE) { 1296 inet_makenetandmask(htonl(val), &su->sin); 1297 return prefixlen(&t[1]); 1298 } 1299 } else { 1300 if ((val = inet_network(s)) != INADDR_NONE) { 1301 inet_makenetandmask(val, &su->sin); 1302 return prefixlen(&t[1]); 1303 } 1304 } 1305 *t = '/'; 1306 } 1307 if (inet_aton(s, &su->sin.sin_addr) && 1308 (which != RTA_DST || forcenet == 0)) { 1309 val = su->sin.sin_addr.s_addr; 1310 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1311 return (1); 1312 else { 1313 val = ntohl(val); 1314 goto netdone; 1315 } 1316 } 1317 if ((val = inet_network(s)) != INADDR_NONE || 1318 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1319 netdone: 1320 if (which == RTA_DST) 1321 inet_makenetandmask(val, &su->sin); 1322 return (0); 1323 } 1324 hp = gethostbyname(s); 1325 if (hp) { 1326 *hpp = hp; 1327 su->sin.sin_family = hp->h_addrtype; 1328 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1329 return (1); 1330 } 1331 errx(1, "bad value: %s", s); 1332 } 1333 1334 int 1335 prefixlen(const char *s) 1336 { 1337 int len = atoi(s), q, r; 1338 int max; 1339 1340 switch (af) { 1341 case AF_INET: 1342 max = sizeof(struct in_addr) * 8; 1343 break; 1344 #ifdef INET6 1345 case AF_INET6: 1346 max = sizeof(struct in6_addr) * 8; 1347 break; 1348 #endif 1349 default: 1350 errx(1, "prefixlen is not supported with af %d", af); 1351 } 1352 1353 rtm_addrs |= RTA_NETMASK; 1354 if (len < -1 || len > max) 1355 errx(1, "bad value: %s", s); 1356 1357 q = len >> 3; 1358 r = len & 7; 1359 switch (af) { 1360 case AF_INET: 1361 memset(&so_mask, 0, sizeof(so_mask)); 1362 so_mask.sin.sin_family = AF_INET; 1363 so_mask.sin.sin_len = sizeof(struct sockaddr_in); 1364 so_mask.sin.sin_addr.s_addr = htonl(0xffffffff << (32 - len)); 1365 break; 1366 #ifdef INET6 1367 case AF_INET6: 1368 so_mask.sin6.sin6_family = AF_INET6; 1369 so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1370 memset((void *)&so_mask.sin6.sin6_addr, 0, 1371 sizeof(so_mask.sin6.sin6_addr)); 1372 if (q > 0) 1373 memset((void *)&so_mask.sin6.sin6_addr, 0xff, q); 1374 if (r > 0) 1375 *((u_char *)&so_mask.sin6.sin6_addr + q) = 1376 (0xff00 >> r) & 0xff; 1377 break; 1378 #endif 1379 } 1380 return (len == max); 1381 } 1382 1383 #ifndef SMALL 1384 int 1385 x25_makemask(void) 1386 { 1387 char *cp; 1388 1389 if ((rtm_addrs & RTA_NETMASK) == 0) { 1390 rtm_addrs |= RTA_NETMASK; 1391 for (cp = (char *)&so_mask.sx25.x25_net; 1392 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1393 *cp = -1; 1394 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1395 } 1396 return 0; 1397 } 1398 1399 1400 const char * 1401 ns_print(struct sockaddr_ns *sns) 1402 { 1403 struct ns_addr work; 1404 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1405 u_short port; 1406 static char mybuf[50], cport[10], chost[25]; 1407 const char *host = ""; 1408 char *p; 1409 u_char *q; 1410 1411 work = sns->sns_addr; 1412 port = ntohs(work.x_port); 1413 work.x_port = 0; 1414 net.net_e = work.x_net; 1415 if (ns_nullhost(work) && net.int32_t_e == 0) { 1416 if (!port) 1417 return ("*.*"); 1418 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1419 return (mybuf); 1420 } 1421 1422 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1423 host = "any"; 1424 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1425 host = "*"; 1426 else { 1427 q = work.x_host.c_host; 1428 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1429 q[0], q[1], q[2], q[3], q[4], q[5]); 1430 for (p = chost; *p == '0' && p < chost + 12; p++) 1431 /* void */; 1432 host = p; 1433 } 1434 if (port) 1435 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1436 else 1437 *cport = 0; 1438 1439 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1440 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1441 return (mybuf); 1442 } 1443 1444 static void 1445 interfaces(void) 1446 { 1447 size_t needed; 1448 int mib[6]; 1449 char *buf, *lim, *next; 1450 struct rt_msghdr *rtm; 1451 1452 mib[0] = CTL_NET; 1453 mib[1] = PF_ROUTE; 1454 mib[2] = 0; /* protocol */ 1455 mib[3] = 0; /* wildcard address family */ 1456 mib[4] = NET_RT_IFLIST; 1457 mib[5] = 0; /* no flags */ 1458 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1459 err(1, "route-sysctl-estimate"); 1460 if ((buf = malloc(needed)) == NULL) 1461 err(1, "malloc"); 1462 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1463 err(1, "actual retrieval of interface table"); 1464 lim = buf + needed; 1465 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1466 rtm = (struct rt_msghdr *)next; 1467 print_rtmsg(rtm, rtm->rtm_msglen); 1468 } 1469 } 1470 1471 static void 1472 monitor(void) 1473 { 1474 int n; 1475 char msg[2048]; 1476 1477 verbose = 1; 1478 if (debugonly) { 1479 interfaces(); 1480 exit(0); 1481 } 1482 for(;;) { 1483 time_t now; 1484 n = read(sock, msg, 2048); 1485 now = time(NULL); 1486 (void) printf("got message of size %d on %s", n, ctime(&now)); 1487 print_rtmsg((struct rt_msghdr *)msg, n); 1488 } 1489 } 1490 1491 #endif /* SMALL */ 1492 1493 1494 struct { 1495 struct rt_msghdr m_rtm; 1496 char m_space[512]; 1497 } m_rtmsg; 1498 1499 static int 1500 rtmsg(int cmd, int flags) 1501 { 1502 static int seq; 1503 int rlen; 1504 char *cp = m_rtmsg.m_space; 1505 int l; 1506 1507 #define NEXTADDR(w, u) \ 1508 if (rtm_addrs & (w)) {\ 1509 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1510 if (verbose && ! shortoutput) sodump(&(u),#u);\ 1511 } 1512 1513 errno = 0; 1514 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1515 if (cmd == 'a') 1516 cmd = RTM_ADD; 1517 else if (cmd == 'c') 1518 cmd = RTM_CHANGE; 1519 else if (cmd == 'g') { 1520 #ifdef SMALL 1521 return (-1); 1522 #else /* SMALL */ 1523 cmd = RTM_GET; 1524 if (so_ifp.sa.sa_family == 0) { 1525 so_ifp.sa.sa_family = AF_LINK; 1526 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1527 rtm_addrs |= RTA_IFP; 1528 } 1529 #endif /* SMALL */ 1530 } else 1531 cmd = RTM_DELETE; 1532 #define rtm m_rtmsg.m_rtm 1533 rtm.rtm_type = cmd; 1534 rtm.rtm_flags = flags; 1535 rtm.rtm_version = RTM_VERSION; 1536 rtm.rtm_seq = ++seq; 1537 rtm.rtm_addrs = rtm_addrs; 1538 rtm.rtm_rmx = rt_metrics; 1539 rtm.rtm_inits = rtm_inits; 1540 1541 if (rtm_addrs & RTA_NETMASK) 1542 mask_addr(); 1543 NEXTADDR(RTA_DST, so_dst); 1544 NEXTADDR(RTA_GATEWAY, so_gate); 1545 NEXTADDR(RTA_NETMASK, so_mask); 1546 NEXTADDR(RTA_GENMASK, so_genmask); 1547 NEXTADDR(RTA_IFP, so_ifp); 1548 NEXTADDR(RTA_IFA, so_ifa); 1549 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1550 if (verbose && ! shortoutput) 1551 print_rtmsg(&rtm, l); 1552 if (debugonly) 1553 return (0); 1554 if ((rlen = write(sock, (char *)&m_rtmsg, l)) < 0) { 1555 perror("writing to routing socket"); 1556 return (-1); 1557 } 1558 #ifndef SMALL 1559 if (cmd == RTM_GET) { 1560 do { 1561 l = read(sock, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1562 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1563 if (l < 0) 1564 err(1, "read from routing socket"); 1565 else 1566 print_getmsg(&rtm, l); 1567 } 1568 #endif /* SMALL */ 1569 #undef rtm 1570 return (0); 1571 } 1572 1573 static void 1574 mask_addr(void) 1575 { 1576 int olen = so_mask.sa.sa_len; 1577 char *cp1 = olen + (char *)&so_mask, *cp2; 1578 1579 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1580 if (*--cp1 != 0) { 1581 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1582 break; 1583 } 1584 if ((rtm_addrs & RTA_DST) == 0) 1585 return; 1586 switch (so_dst.sa.sa_family) { 1587 case AF_INET: 1588 #ifdef INET6 1589 case AF_INET6: 1590 #endif 1591 #ifndef SMALL 1592 case AF_APPLETALK: 1593 case AF_NS: 1594 case AF_CCITT: 1595 #endif /* SMALL */ 1596 case 0: 1597 return; 1598 #ifndef SMALL 1599 case AF_ISO: 1600 olen = MIN(so_dst.siso.siso_nlen, 1601 MAX(so_mask.sa.sa_len - 6, 0)); 1602 break; 1603 #endif /* SMALL */ 1604 } 1605 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1606 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1607 while (cp2 > cp1) 1608 *--cp2 = 0; 1609 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1610 while (cp1 > so_dst.sa.sa_data) 1611 *--cp1 &= *--cp2; 1612 #ifndef SMALL 1613 switch (so_dst.sa.sa_family) { 1614 case AF_ISO: 1615 so_dst.siso.siso_nlen = olen; 1616 break; 1617 } 1618 #endif /* SMALL */ 1619 } 1620 1621 const char *msgtypes[] = { 1622 "", 1623 "RTM_ADD: Add Route", 1624 "RTM_DELETE: Delete Route", 1625 "RTM_CHANGE: Change Metrics or flags", 1626 "RTM_GET: Report Metrics", 1627 "RTM_LOSING: Kernel Suspects Partitioning", 1628 "RTM_REDIRECT: Told to use different route", 1629 "RTM_MISS: Lookup failed on this address", 1630 "RTM_LOCK: fix specified metrics", 1631 "RTM_OLDADD: caused by SIOCADDRT", 1632 "RTM_OLDDEL: caused by SIOCDELRT", 1633 "RTM_RESOLVE: Route created by cloning", 1634 "RTM_NEWADDR: address being added to iface", 1635 "RTM_DELADDR: address being removed from iface", 1636 "RTM_OIFINFO: iface status change (pre-1.5)", 1637 "RTM_IFINFO: iface status change", 1638 "RTM_IFANNOUNCE: iface arrival/departure", 1639 "RTM_IEEE80211: IEEE80211 wireless event", 1640 0, 1641 }; 1642 1643 char metricnames[] = 1644 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1645 char routeflags[] = 1646 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1647 char ifnetflags[] = 1648 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1649 char addrnames[] = 1650 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1651 1652 1653 #ifndef SMALL 1654 static const char * 1655 linkstate(struct if_msghdr *ifm) 1656 { 1657 static char buf[64]; 1658 1659 switch (ifm->ifm_data.ifi_link_state) { 1660 case LINK_STATE_UNKNOWN: 1661 return "carrier: unknown"; 1662 case LINK_STATE_DOWN: 1663 return "carrier: no carrier"; 1664 case LINK_STATE_UP: 1665 return "carrier: active"; 1666 default: 1667 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1668 ifm->ifm_data.ifi_link_state); 1669 return buf; 1670 } 1671 } 1672 #endif /* SMALL */ 1673 1674 static void 1675 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1676 { 1677 struct if_msghdr *ifm; 1678 struct ifa_msghdr *ifam; 1679 struct if_announcemsghdr *ifan; 1680 union { 1681 struct ieee80211_join_event join; 1682 struct ieee80211_leave_event leave; 1683 struct ieee80211_replay_event replay; 1684 struct ieee80211_michael_event michael; 1685 } ev; 1686 size_t evlen = 0; 1687 1688 if (verbose == 0) 1689 return; 1690 if (rtm->rtm_version != RTM_VERSION) { 1691 (void) printf("routing message version %d not understood\n", 1692 rtm->rtm_version); 1693 return; 1694 } 1695 if (msgtypes[rtm->rtm_type]) 1696 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1697 else 1698 (void)printf("#%d: ", rtm->rtm_type); 1699 (void)printf("len %d, ", rtm->rtm_msglen); 1700 switch (rtm->rtm_type) { 1701 case RTM_IFINFO: 1702 ifm = (struct if_msghdr *)rtm; 1703 (void) printf("if# %d, %s, flags:", ifm->ifm_index, 1704 #ifdef SMALL 1705 "" 1706 #else 1707 linkstate(ifm) 1708 #endif /* SMALL */ 1709 ); 1710 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1711 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1712 break; 1713 case RTM_NEWADDR: 1714 case RTM_DELADDR: 1715 ifam = (struct ifa_msghdr *)rtm; 1716 (void) printf("metric %d, flags:", ifam->ifam_metric); 1717 bprintf(stdout, ifam->ifam_flags, routeflags); 1718 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1719 break; 1720 case RTM_IEEE80211: 1721 ifan = (struct if_announcemsghdr *)rtm; 1722 (void) printf("if# %d, what: ", ifan->ifan_index); 1723 switch (ifan->ifan_what) { 1724 case RTM_IEEE80211_ASSOC: 1725 printf("associate"); 1726 break; 1727 case RTM_IEEE80211_REASSOC: 1728 printf("re-associate"); 1729 break; 1730 case RTM_IEEE80211_DISASSOC: 1731 printf("disassociate"); 1732 break; 1733 case RTM_IEEE80211_SCAN: 1734 printf("scan complete"); 1735 break; 1736 case RTM_IEEE80211_JOIN: 1737 evlen = sizeof(ev.join); 1738 printf("join"); 1739 break; 1740 case RTM_IEEE80211_LEAVE: 1741 evlen = sizeof(ev.leave); 1742 printf("leave"); 1743 break; 1744 case RTM_IEEE80211_MICHAEL: 1745 evlen = sizeof(ev.michael); 1746 printf("michael"); 1747 break; 1748 case RTM_IEEE80211_REPLAY: 1749 evlen = sizeof(ev.replay); 1750 printf("replay"); 1751 break; 1752 default: 1753 evlen = 0; 1754 printf("#%d", ifan->ifan_what); 1755 break; 1756 } 1757 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1758 printf(" (truncated)\n"); 1759 break; 1760 } 1761 (void)memcpy(&ev, (ifan + 1), evlen); 1762 switch (ifan->ifan_what) { 1763 case RTM_IEEE80211_JOIN: 1764 case RTM_IEEE80211_LEAVE: 1765 printf(" mac %" PRIETHER, 1766 PRIETHER_ARGS(ev.join.iev_addr)); 1767 break; 1768 case RTM_IEEE80211_REPLAY: 1769 case RTM_IEEE80211_MICHAEL: 1770 printf(" src %" PRIETHER " dst %" PRIETHER 1771 " cipher %" PRIu8 " keyix %" PRIu8, 1772 PRIETHER_ARGS(ev.replay.iev_src), 1773 PRIETHER_ARGS(ev.replay.iev_dst), 1774 ev.replay.iev_cipher, 1775 ev.replay.iev_keyix); 1776 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1777 printf(" key rsc %#" PRIx64 1778 " frame rsc %#" PRIx64, 1779 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1780 } 1781 break; 1782 default: 1783 break; 1784 } 1785 printf("\n"); 1786 break; 1787 case RTM_IFANNOUNCE: 1788 ifan = (struct if_announcemsghdr *)rtm; 1789 (void) printf("if# %d, what: ", ifan->ifan_index); 1790 switch (ifan->ifan_what) { 1791 case IFAN_ARRIVAL: 1792 printf("arrival"); 1793 break; 1794 case IFAN_DEPARTURE: 1795 printf("departure"); 1796 break; 1797 default: 1798 printf("#%d", ifan->ifan_what); 1799 break; 1800 } 1801 printf("\n"); 1802 break; 1803 default: 1804 (void) printf("pid: %d, seq %d, errno %d, flags:", 1805 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1806 bprintf(stdout, rtm->rtm_flags, routeflags); 1807 pmsg_common(rtm); 1808 } 1809 } 1810 1811 #ifndef SMALL 1812 static void 1813 print_getmsg(struct rt_msghdr *rtm, int msglen) 1814 { 1815 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1816 struct sockaddr_dl *ifp = NULL; 1817 struct sockaddr *sa; 1818 char *cp; 1819 int i; 1820 1821 if (! shortoutput) 1822 (void) printf(" route to: %s\n", 1823 routename((struct sockaddr *) &so_dst, NULL, RTF_HOST)); 1824 if (rtm->rtm_version != RTM_VERSION) { 1825 warnx("routing message version %d not understood", 1826 rtm->rtm_version); 1827 return; 1828 } 1829 if (rtm->rtm_msglen > msglen) { 1830 warnx("message length mismatch, in packet %d, returned %d", 1831 rtm->rtm_msglen, msglen); 1832 } 1833 if (rtm->rtm_errno) { 1834 warn("RTM_GET"); 1835 return; 1836 } 1837 cp = ((char *)(rtm + 1)); 1838 if (rtm->rtm_addrs) 1839 for (i = 1; i; i <<= 1) 1840 if (i & rtm->rtm_addrs) { 1841 sa = (struct sockaddr *)cp; 1842 switch (i) { 1843 case RTA_DST: 1844 dst = sa; 1845 break; 1846 case RTA_GATEWAY: 1847 gate = sa; 1848 break; 1849 case RTA_NETMASK: 1850 mask = sa; 1851 break; 1852 case RTA_IFP: 1853 if (sa->sa_family == AF_LINK && 1854 ((struct sockaddr_dl *)sa)->sdl_nlen) 1855 ifp = (struct sockaddr_dl *)sa; 1856 break; 1857 case RTA_IFA: 1858 ifa = sa; 1859 break; 1860 } 1861 ADVANCE(cp, sa); 1862 } 1863 if (dst && mask) 1864 mask->sa_family = dst->sa_family; /* XXX */ 1865 if (dst && ! shortoutput) 1866 (void)printf("destination: %s\n", 1867 routename(dst, mask, RTF_HOST)); 1868 if (mask && ! shortoutput) { 1869 int savenflag = nflag; 1870 1871 nflag = 1; 1872 (void)printf(" mask: %s\n", 1873 routename(mask, NULL, RTF_HOST)); 1874 nflag = savenflag; 1875 } 1876 if (gate && rtm->rtm_flags & RTF_GATEWAY && ! shortoutput) 1877 (void)printf(" gateway: %s\n", 1878 routename(gate, NULL, RTF_HOST)); 1879 if (ifa && ! shortoutput) 1880 (void)printf(" local addr: %s\n", 1881 routename(ifa, NULL, RTF_HOST)); 1882 if (ifp && ! shortoutput) 1883 (void)printf(" interface: %.*s\n", 1884 ifp->sdl_nlen, ifp->sdl_data); 1885 if (! shortoutput) { 1886 (void)printf(" flags: "); 1887 bprintf(stdout, rtm->rtm_flags, routeflags); 1888 } 1889 1890 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1891 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1892 1893 if (! shortoutput) { 1894 (void) printf("\n%s\n", "\ 1895 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1896 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1897 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1898 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1899 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1900 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1901 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1902 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1903 if (rtm->rtm_rmx.rmx_expire) 1904 rtm->rtm_rmx.rmx_expire -= time(0); 1905 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1906 } 1907 #undef lock 1908 #undef msec 1909 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1910 1911 if ((rtm->rtm_addrs & RTF_GATEWAY) == 0) 1912 rv = 1; 1913 else { 1914 const char *name; 1915 int addrs; 1916 1917 cp = (char *)(rtm + 1); 1918 addrs = rtm->rtm_addrs; 1919 1920 for (i = 1; i; i <<= 1) { 1921 sa = (struct sockaddr *)cp; 1922 if (i == RTF_GATEWAY) { 1923 name = routename(sa, NULL, RTF_HOST); 1924 if (name[0] == '\0') 1925 rv = 1; 1926 else if (shortoutput) 1927 printf("%s\n", name); 1928 } 1929 if (i & addrs) 1930 ADVANCE(cp, sa); 1931 } 1932 } 1933 1934 if (shortoutput) 1935 return; 1936 else if (verbose) 1937 pmsg_common(rtm); 1938 else if (rtm->rtm_addrs &~ RTA_IGN) { 1939 (void) printf("sockaddrs: "); 1940 bprintf(stdout, rtm->rtm_addrs, addrnames); 1941 putchar('\n'); 1942 } 1943 #undef RTA_IGN 1944 } 1945 #endif /* SMALL */ 1946 1947 void 1948 pmsg_common(struct rt_msghdr *rtm) 1949 { 1950 (void) printf("\nlocks: "); 1951 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1952 (void) printf(" inits: "); 1953 bprintf(stdout, rtm->rtm_inits, metricnames); 1954 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1955 } 1956 1957 static void 1958 pmsg_addrs(char *cp, int addrs) 1959 { 1960 struct sockaddr *sa; 1961 int i; 1962 1963 if (addrs != 0) { 1964 (void) printf("\nsockaddrs: "); 1965 bprintf(stdout, addrs, addrnames); 1966 (void) putchar('\n'); 1967 for (i = 1; i; i <<= 1) 1968 if (i & addrs) { 1969 sa = (struct sockaddr *)cp; 1970 (void) printf(" %s", 1971 routename(sa, NULL, RTF_HOST)); 1972 ADVANCE(cp, sa); 1973 } 1974 } 1975 (void) putchar('\n'); 1976 (void) fflush(stdout); 1977 } 1978 1979 static void 1980 bprintf(FILE *fp, int b, u_char *s) 1981 { 1982 int i; 1983 int gotsome = 0; 1984 1985 if (b == 0) 1986 return; 1987 while ((i = *s++) != 0) { 1988 if (b & (1 << (i-1))) { 1989 if (gotsome == 0) 1990 i = '<'; 1991 else 1992 i = ','; 1993 (void) putc(i, fp); 1994 gotsome = 1; 1995 for (; (i = *s) > 32; s++) 1996 (void) putc(i, fp); 1997 } else 1998 while (*s > 32) 1999 s++; 2000 } 2001 if (gotsome) 2002 (void) putc('>', fp); 2003 } 2004 2005 static int 2006 keyword(char *cp) 2007 { 2008 struct keytab *kt = keywords; 2009 2010 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 2011 kt++; 2012 return kt->kt_i; 2013 } 2014 2015 static void 2016 sodump(sup su, const char *which) 2017 { 2018 #ifdef INET6 2019 char ntop_buf[NI_MAXHOST]; 2020 #endif 2021 2022 switch (su->sa.sa_family) { 2023 case AF_INET: 2024 (void) printf("%s: inet %s; ", 2025 which, inet_ntoa(su->sin.sin_addr)); 2026 break; 2027 #ifndef SMALL 2028 case AF_APPLETALK: 2029 (void) printf("%s: atalk %d.%d; ", 2030 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 2031 break; 2032 #endif 2033 case AF_LINK: 2034 (void) printf("%s: link %s; ", 2035 which, link_ntoa(&su->sdl)); 2036 break; 2037 #ifndef SMALL 2038 #ifdef INET6 2039 case AF_INET6: 2040 (void) printf("%s: inet6 %s; ", 2041 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 2042 ntop_buf, sizeof(ntop_buf))); 2043 break; 2044 #endif 2045 case AF_ISO: 2046 (void) printf("%s: iso %s; ", 2047 which, iso_ntoa(&su->siso.siso_addr)); 2048 break; 2049 case AF_NS: 2050 (void) printf("%s: xns %s; ", 2051 which, ns_ntoa(su->sns.sns_addr)); 2052 break; 2053 #endif /* SMALL */ 2054 default: 2055 (void) printf("af %p: %s; ", 2056 which, any_ntoa(&su->sa)); 2057 } 2058 (void) fflush(stdout); 2059 } 2060 2061 /* States*/ 2062 #define VIRGIN 0 2063 #define GOTONE 1 2064 #define GOTTWO 2 2065 /* Inputs */ 2066 #define DIGIT (4*0) 2067 #define END (4*1) 2068 #define DELIM (4*2) 2069 2070 static void 2071 sockaddr(char *addr, struct sockaddr *sa) 2072 { 2073 char *cp = (char *)sa; 2074 int size = sa->sa_len; 2075 char *cplim = cp + size; 2076 int byte = 0, state = VIRGIN, new = 0; 2077 2078 (void) memset(cp, 0, size); 2079 cp++; 2080 do { 2081 if ((*addr >= '0') && (*addr <= '9')) { 2082 new = *addr - '0'; 2083 } else if ((*addr >= 'a') && (*addr <= 'f')) { 2084 new = *addr - 'a' + 10; 2085 } else if ((*addr >= 'A') && (*addr <= 'F')) { 2086 new = *addr - 'A' + 10; 2087 } else if (*addr == 0) 2088 state |= END; 2089 else 2090 state |= DELIM; 2091 addr++; 2092 switch (state /* | INPUT */) { 2093 case GOTTWO | DIGIT: 2094 *cp++ = byte; /*FALLTHROUGH*/ 2095 case VIRGIN | DIGIT: 2096 state = GOTONE; byte = new; continue; 2097 case GOTONE | DIGIT: 2098 state = GOTTWO; byte = new + (byte << 4); continue; 2099 default: /* | DELIM */ 2100 state = VIRGIN; *cp++ = byte; byte = 0; continue; 2101 case GOTONE | END: 2102 case GOTTWO | END: 2103 *cp++ = byte; /* FALLTHROUGH */ 2104 case VIRGIN | END: 2105 break; 2106 } 2107 break; 2108 } while (cp < cplim); 2109 sa->sa_len = cp - (char *)sa; 2110 } 2111
Indexes created Tue Sep 30 11:09:46 GMT 2025