route.c revision 1.89
1 /* $NetBSD: route.c,v 1.89 2005/08/12 16:29:06 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 1.89 2005/08/12 16:29:06 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, "dfnqstv")) != -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) 308 printf("(address family %s)\n", (*argv + 1)); 309 } 310 seqno = 0; /* ??? */ 311 for (next = buf; next < lim; next += rtm->rtm_msglen) { 312 rtm = (struct rt_msghdr *)next; 313 if (verbose) 314 print_rtmsg(rtm, rtm->rtm_msglen); 315 if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC | 316 RTF_LLINFO)) && !doall) 317 continue; 318 if (af) { 319 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 320 321 if (sa->sa_family != af) 322 continue; 323 } 324 if (debugonly) 325 continue; 326 rtm->rtm_type = RTM_DELETE; 327 rtm->rtm_seq = seqno; 328 rlen = write(sock, next, rtm->rtm_msglen); 329 if (rlen < (int)rtm->rtm_msglen) { 330 warn("write to routing socket, got %d for rlen", rlen); 331 return 1; 332 } 333 seqno++; 334 if (qflag) 335 continue; 336 if (verbose) 337 print_rtmsg(rtm, rlen); 338 else { 339 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 340 (void)printf("%-20.20s ", 341 routename(sa, NULL, rtm->rtm_flags)); 342 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 343 (void)printf("%-20.20s ", 344 routename(sa, NULL, RTF_HOST)); 345 (void)printf("done\n"); 346 } 347 } 348 return 0; 349 } 350 351 352 static char hexlist[] = "0123456789abcdef"; 353 354 static char * 355 any_ntoa(const struct sockaddr *sa) 356 { 357 static char obuf[3 * 256]; 358 const char *in; 359 char *out; 360 int len; 361 362 #if __GNUC__ > 2 363 len = sa->sa_len - offsetof(struct sockaddr, sa_data); 364 #else 365 len = sa->sa_len - ((struct sockaddr*)&sa->sa_data - sa); 366 #endif 367 in = sa->sa_data; 368 out = obuf; 369 370 do { 371 *out++ = hexlist[(*in >> 4) & 15]; 372 *out++ = hexlist[(*in++) & 15]; 373 *out++ = '.'; 374 } while (--len > 0); 375 out[-1] = '\0'; 376 return obuf; 377 } 378 379 380 int 381 netmask_length(struct sockaddr *nm, int family) 382 { 383 static int 384 /* number of bits in a nibble */ 385 _t[] = { 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4 }, 386 /* good nibbles are 1111, 1110, 1100, 1000, 0000 */ 387 _g[] = { 1,0,0,0,0,0,0,0,1,0,0,0,1,0,1,1 }; 388 int mask, good, zeroes, maskbytes, bit, i; 389 unsigned char *maskdata; 390 391 if (nm == NULL) 392 return 0; 393 394 mask = 0; 395 good = 1; 396 zeroes = 0; 397 398 switch (family) { 399 case AF_INET: { 400 struct sockaddr_in *nsin = (struct sockaddr_in *)nm; 401 maskdata = (unsigned char *)&nsin->sin_addr; 402 maskbytes = nsin->sin_len - 403 ((caddr_t)&nsin->sin_addr - (caddr_t)nsin); 404 break; 405 } 406 case AF_INET6: { 407 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nm; 408 maskdata = (unsigned char *)&sin6->sin6_addr; 409 maskbytes = sin6->sin6_len - 410 ((caddr_t)&sin6->sin6_addr - (caddr_t)sin6); 411 break; 412 } 413 default: 414 return 0; 415 } 416 417 /* 418 * Count the bits in the nibbles of the mask, and marking the 419 * netmask as not good (or at best, non-standard and very 420 * discouraged, in the case of AF_INET) if we find either of 421 * a nibble with non-contiguous bits, or a non-zero nibble 422 * after we've found a zero nibble. 423 */ 424 for (i = 0; i < maskbytes; i++) { 425 /* high nibble */ 426 mask += bit = _t[maskdata[i] >> 4]; 427 good &= _g[maskdata[i] >> 4]; 428 if (zeroes && bit) 429 good = 0; 430 if (bit == 0) 431 zeroes = 1; 432 /* low nibble */ 433 mask += bit = _t[maskdata[i] & 0xf]; 434 good &= _g[maskdata[i] & 0xf]; 435 if (zeroes && bit) 436 good = 0; 437 if (bit == 0) 438 zeroes = 1; 439 } 440 441 /* 442 * Always return the number of bits found, but as a negative 443 * if the mask wasn't one we like. 444 */ 445 return good ? mask : -mask; 446 } 447 448 char * 449 netmask_string(struct sockaddr *mask, int len) 450 { 451 static char smask[16]; 452 453 if (len >= 0) 454 snprintf(smask, sizeof(smask), "%d", len); 455 else { 456 /* XXX AF_INET only?! */ 457 struct sockaddr_in nsin; 458 459 memset(&nsin, 0, sizeof(nsin)); 460 memcpy(&nsin, mask, mask->sa_len); 461 snprintf(smask, sizeof(smask), "%s", inet_ntoa(nsin.sin_addr)); 462 } 463 464 return smask; 465 } 466 467 468 const char * 469 routename(struct sockaddr *sa, struct sockaddr *nm, int flags) 470 { 471 const char *cp; 472 static char line[50]; 473 struct hostent *hp; 474 static char domain[MAXHOSTNAMELEN + 1]; 475 static int first = 1; 476 struct in_addr in; 477 int nml; 478 479 if ((flags & RTF_HOST) == 0) 480 return netname(sa, nm); 481 482 if (first) { 483 first = 0; 484 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 485 (cp = strchr(domain, '.'))) 486 (void)strlcpy(domain, cp + 1, sizeof(domain)); 487 else 488 domain[0] = 0; 489 } 490 491 if (sa->sa_len == 0) 492 strlcpy(line, "default", sizeof(line)); 493 else switch (sa->sa_family) { 494 495 case AF_INET: 496 in = ((struct sockaddr_in *)sa)->sin_addr; 497 nml = netmask_length(nm, AF_INET); 498 499 cp = 0; 500 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) { 501 if (nml == 0) 502 cp = "default"; 503 else { 504 static char notdefault[sizeof(NOTDEFSTRING)]; 505 506 snprintf(notdefault, sizeof(notdefault), 507 "0.0.0.0/%s", netmask_string(nm, nml)); 508 cp = notdefault; 509 } 510 } 511 if (cp == 0 && !nflag) { 512 hp = gethostbyaddr((char *)&in, sizeof(struct in_addr), 513 AF_INET); 514 if (hp) { 515 char *ccp; 516 if ((ccp = strchr(hp->h_name, '.')) && 517 !strcmp(ccp + 1, domain)) 518 *ccp = 0; 519 cp = hp->h_name; 520 } 521 } 522 if (cp) 523 (void)strlcpy(line, cp, sizeof(line)); 524 else 525 (void)strlcpy(line, inet_ntoa(in), sizeof(line)); 526 break; 527 528 case AF_LINK: 529 return (link_ntoa((struct sockaddr_dl *)sa)); 530 531 #ifndef SMALL 532 #ifdef INET6 533 case AF_INET6: 534 { 535 struct sockaddr_in6 sin6; 536 int niflags; 537 char nihost[NI_MAXHOST]; 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 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 566 nihost, sizeof(nihost), NULL, 0, niflags) != 0) 567 strlcpy(line, "invalid", sizeof(line)); 568 else { 569 char *ccp; 570 if (!nflag && (ccp = strchr(nihost, '.')) && 571 strcmp(ccp + 1, domain) == 0) 572 *ccp = 0; 573 strlcpy(line, nihost, sizeof(line)); 574 } 575 break; 576 } 577 #endif 578 579 case AF_NS: 580 return (ns_print((struct sockaddr_ns *)sa)); 581 582 case AF_ISO: 583 (void)snprintf(line, sizeof line, "iso %s", 584 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 585 break; 586 587 case AF_APPLETALK: 588 (void)snprintf(line, sizeof(line), "atalk %d.%d", 589 ((struct sockaddr_at *)sa)->sat_addr.s_net, 590 ((struct sockaddr_at *)sa)->sat_addr.s_node); 591 break; 592 #endif /* SMALL */ 593 594 default: 595 (void)snprintf(line, sizeof line, "(%d) %s", 596 sa->sa_family, any_ntoa(sa)); 597 break; 598 599 } 600 return (line); 601 } 602 603 /* 604 * Return the name of the network whose address is given. 605 * The address is assumed to be that of a net or subnet, not a host. 606 */ 607 const char * 608 netname(struct sockaddr *sa, struct sockaddr *nm) 609 { 610 const char *cp = 0; 611 static char line[50]; 612 struct netent *np = 0; 613 u_int32_t net, mask; 614 u_int32_t i; 615 int subnetshift, nml; 616 struct in_addr in; 617 618 switch (sa->sa_family) { 619 620 case AF_INET: 621 in = ((struct sockaddr_in *)sa)->sin_addr; 622 i = ntohl(in.s_addr); 623 nml = netmask_length(nm, AF_INET); 624 if (i == 0) { 625 if (nml == 0) 626 cp = "default"; 627 else { 628 static char notdefault[sizeof(NOTDEFSTRING)]; 629 630 snprintf(notdefault, sizeof(notdefault), 631 "0.0.0.0/%s", netmask_string(nm, nml)); 632 cp = notdefault; 633 } 634 } 635 else if (!nflag) { 636 if (IN_CLASSA(i)) { 637 mask = IN_CLASSA_NET; 638 subnetshift = 8; 639 } else if (IN_CLASSB(i)) { 640 mask = IN_CLASSB_NET; 641 subnetshift = 8; 642 } else { 643 mask = IN_CLASSC_NET; 644 subnetshift = 4; 645 } 646 /* 647 * If there are more bits than the standard mask 648 * would suggest, subnets must be in use. 649 * Guess at the subnet mask, assuming reasonable 650 * width subnet fields. 651 */ 652 while (i &~ mask) 653 mask = (int32_t)mask >> subnetshift; 654 net = i & mask; 655 while ((mask & 1) == 0) 656 mask >>= 1, net >>= 1; 657 np = getnetbyaddr(net, AF_INET); 658 if (np) 659 cp = np->n_name; 660 } 661 if (cp) 662 (void)strlcpy(line, cp, sizeof(line)); 663 else { 664 #if 0 /* XXX - This is silly... */ 665 #define C(x) ((x) & 0xff) 666 if ((i & 0xffffff) == 0) 667 (void)snprintf(line, sizeof line, "%u", 668 C(i >> 24)); 669 else if ((i & 0xffff) == 0) 670 (void)snprintf(line, sizeof line, "%u.%u", 671 C(i >> 24), C(i >> 16)); 672 else if ((i & 0xff) == 0) 673 (void)snprintf(line, sizeof line, "%u.%u.%u", 674 C(i >> 24), C(i >> 16), C(i >> 8)); 675 else 676 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 677 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 678 #undef C 679 #else /* XXX */ 680 if (nml == 0) 681 strlcpy(line, inet_ntoa(in), sizeof(line)); 682 else 683 snprintf(line, sizeof(line), "%s/%d", inet_ntoa(in), nml); 684 #endif /* XXX */ 685 } 686 break; 687 688 case AF_LINK: 689 return (link_ntoa((struct sockaddr_dl *)sa)); 690 691 #ifndef SMALL 692 #ifdef INET6 693 case AF_INET6: 694 { 695 struct sockaddr_in6 sin6; 696 int niflags; 697 698 niflags = 0; 699 if (nflag) 700 niflags |= NI_NUMERICHOST; 701 memset(&sin6, 0, sizeof(sin6)); 702 memcpy(&sin6, sa, sa->sa_len); 703 sin6.sin6_len = sizeof(struct sockaddr_in6); 704 sin6.sin6_family = AF_INET6; 705 #ifdef __KAME__ 706 if (sa->sa_len == sizeof(struct sockaddr_in6) && 707 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 708 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 709 sin6.sin6_scope_id == 0) { 710 sin6.sin6_scope_id = 711 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 712 sin6.sin6_addr.s6_addr[2] = 0; 713 sin6.sin6_addr.s6_addr[3] = 0; 714 } 715 #endif 716 nml = netmask_length(nm, AF_INET6); 717 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 718 if (nml == 0) 719 strlcpy(line, "::", sizeof(line)); 720 else 721 /* noncontiguous never happens in ipv6 */ 722 snprintf(line, sizeof(line), "::/%d", nml); 723 } 724 725 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 726 line, sizeof(line), NULL, 0, niflags) != 0) 727 strlcpy(line, "invalid", sizeof(line)); 728 break; 729 } 730 #endif 731 732 case AF_NS: 733 return (ns_print((struct sockaddr_ns *)sa)); 734 735 case AF_ISO: 736 (void)snprintf(line, sizeof line, "iso %s", 737 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 738 break; 739 740 case AF_APPLETALK: 741 (void)snprintf(line, sizeof(line), "atalk %d.%d", 742 ((struct sockaddr_at *)sa)->sat_addr.s_net, 743 ((struct sockaddr_at *)sa)->sat_addr.s_node); 744 break; 745 #endif /* SMALL */ 746 747 default: 748 (void)snprintf(line, sizeof line, "af %d: %s", 749 sa->sa_family, any_ntoa(sa)); 750 break; 751 } 752 return (line); 753 } 754 755 static void 756 set_metric(char *value, int key) 757 { 758 int flag = 0; 759 u_long noval, *valp = &noval; 760 761 switch (key) { 762 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 763 caseof(K_MTU, RTV_MTU, rmx_mtu); 764 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 765 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 766 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 767 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 768 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 769 caseof(K_RTT, RTV_RTT, rmx_rtt); 770 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 771 } 772 rtm_inits |= flag; 773 if (lockrest || locking) 774 rt_metrics.rmx_locks |= flag; 775 if (locking) 776 locking = 0; 777 *valp = atoi(value); 778 } 779 780 static int 781 newroute(int argc, char **argv) 782 { 783 const char *cmd, *dest = "", *gateway = ""; 784 const char *error; 785 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 786 int key; 787 struct hostent *hp = 0; 788 789 cmd = argv[0]; 790 af = 0; 791 if (*cmd != 'g') 792 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 793 while (--argc > 0) { 794 if (**(++argv)== '-') { 795 switch (key = keyword(1 + *argv)) { 796 797 case K_SA: 798 af = PF_ROUTE; 799 aflen = sizeof(union sockunion); 800 break; 801 802 #ifndef SMALL 803 case K_ATALK: 804 af = AF_APPLETALK; 805 aflen = sizeof(struct sockaddr_at); 806 break; 807 #endif 808 809 case K_INET: 810 af = AF_INET; 811 aflen = sizeof(struct sockaddr_in); 812 break; 813 814 #ifdef INET6 815 case K_INET6: 816 af = AF_INET6; 817 aflen = sizeof(struct sockaddr_in6); 818 break; 819 #endif 820 821 case K_LINK: 822 af = AF_LINK; 823 aflen = sizeof(struct sockaddr_dl); 824 break; 825 826 #ifndef SMALL 827 case K_OSI: 828 case K_ISO: 829 af = AF_ISO; 830 aflen = sizeof(struct sockaddr_iso); 831 break; 832 833 case K_X25: 834 af = AF_CCITT; 835 aflen = sizeof(struct sockaddr_x25); 836 break; 837 838 case K_XNS: 839 af = AF_NS; 840 aflen = sizeof(struct sockaddr_ns); 841 break; 842 #endif /* SMALL */ 843 844 case K_IFACE: 845 case K_INTERFACE: 846 iflag++; 847 break; 848 case K_NOSTATIC: 849 flags &= ~RTF_STATIC; 850 break; 851 case K_LLINFO: 852 flags |= RTF_LLINFO; 853 break; 854 case K_LOCK: 855 locking = 1; 856 break; 857 case K_LOCKREST: 858 lockrest = 1; 859 break; 860 case K_HOST: 861 forcehost++; 862 break; 863 case K_REJECT: 864 flags |= RTF_REJECT; 865 break; 866 case K_BLACKHOLE: 867 flags |= RTF_BLACKHOLE; 868 break; 869 case K_CLONED: 870 flags |= RTF_CLONED; 871 break; 872 case K_PROTO1: 873 flags |= RTF_PROTO1; 874 break; 875 case K_PROTO2: 876 flags |= RTF_PROTO2; 877 break; 878 case K_CLONING: 879 flags |= RTF_CLONING; 880 break; 881 case K_XRESOLVE: 882 flags |= RTF_XRESOLVE; 883 break; 884 case K_STATIC: 885 flags |= RTF_STATIC; 886 break; 887 case K_IFA: 888 if (!--argc) 889 usage(1+*argv); 890 (void)getaddr(RTA_IFA, *++argv, 0); 891 break; 892 case K_IFP: 893 if (!--argc) 894 usage(1+*argv); 895 (void)getaddr(RTA_IFP, *++argv, 0); 896 break; 897 case K_GENMASK: 898 if (!--argc) 899 usage(1+*argv); 900 (void)getaddr(RTA_GENMASK, *++argv, 0); 901 break; 902 case K_GATEWAY: 903 if (!--argc) 904 usage(1+*argv); 905 (void)getaddr(RTA_GATEWAY, *++argv, 0); 906 break; 907 case K_DST: 908 if (!--argc) 909 usage(1+*argv); 910 ishost = getaddr(RTA_DST, *++argv, &hp); 911 dest = *argv; 912 break; 913 case K_NETMASK: 914 if (!--argc) 915 usage(1+*argv); 916 (void)getaddr(RTA_NETMASK, *++argv, 0); 917 /* FALLTHROUGH */ 918 case K_NET: 919 forcenet++; 920 break; 921 case K_PREFIXLEN: 922 if (!--argc) 923 usage(1+*argv); 924 ishost = prefixlen(*++argv); 925 break; 926 case K_MTU: 927 case K_HOPCOUNT: 928 case K_EXPIRE: 929 case K_RECVPIPE: 930 case K_SENDPIPE: 931 case K_SSTHRESH: 932 case K_RTT: 933 case K_RTTVAR: 934 if (!--argc) 935 usage(1+*argv); 936 set_metric(*++argv, key); 937 break; 938 default: 939 usage(1+*argv); 940 } 941 } else { 942 if ((rtm_addrs & RTA_DST) == 0) { 943 dest = *argv; 944 ishost = getaddr(RTA_DST, *argv, &hp); 945 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 946 gateway = *argv; 947 (void)getaddr(RTA_GATEWAY, *argv, &hp); 948 } else { 949 ret = atoi(*argv); 950 951 if (ret == 0) { 952 if (strcmp(*argv, "0") == 0) { 953 if (!qflag) { 954 warnx("%s, %s", 955 "old usage of trailing 0", 956 "assuming route to if"); 957 } 958 } else 959 usage((char *)NULL); 960 iflag = 1; 961 continue; 962 } else if (ret > 0 && ret < 10) { 963 if (!qflag) { 964 warnx("%s, %s", 965 "old usage of trailing digit", 966 "assuming route via gateway"); 967 } 968 iflag = 0; 969 continue; 970 } 971 (void)getaddr(RTA_NETMASK, *argv, 0); 972 } 973 } 974 } 975 if (forcehost && forcenet) 976 errx(1, "-host and -net conflict"); 977 else if (forcehost) 978 ishost = 1; 979 else if (forcenet) 980 ishost = 0; 981 flags |= RTF_UP; 982 if (ishost) 983 flags |= RTF_HOST; 984 if (iflag == 0) 985 flags |= RTF_GATEWAY; 986 for (attempts = 1; ; attempts++) { 987 errno = 0; 988 if ((ret = rtmsg(*cmd, flags)) == 0) 989 break; 990 if (errno != ENETUNREACH && errno != ESRCH) 991 break; 992 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 993 hp->h_addr_list++; 994 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 995 hp->h_length); 996 } else 997 break; 998 } 999 if (*cmd == 'g') 1000 return rv; 1001 if (!qflag) { 1002 oerrno = errno; 1003 (void)printf("%s %s %s", cmd, ishost? "host" : "net", dest); 1004 if (*gateway) { 1005 (void)printf(": gateway %s", gateway); 1006 if (attempts > 1 && ret == 0 && af == AF_INET) 1007 (void)printf(" (%s)", 1008 inet_ntoa(so_gate.sin.sin_addr)); 1009 } 1010 if (ret == 0) 1011 (void)printf("\n"); 1012 else { 1013 switch (oerrno) { 1014 case ESRCH: 1015 error = "not in table"; 1016 break; 1017 case EBUSY: 1018 error = "entry in use"; 1019 break; 1020 case ENOBUFS: 1021 error = "routing table overflow"; 1022 break; 1023 default: 1024 error = strerror(oerrno); 1025 break; 1026 } 1027 (void)printf(": %s\n", error); 1028 } 1029 } 1030 return (ret != 0); 1031 } 1032 1033 static void 1034 inet_makenetandmask(u_int32_t net, struct sockaddr_in *isin) 1035 { 1036 u_int32_t addr, mask = 0; 1037 char *cp; 1038 1039 rtm_addrs |= RTA_NETMASK; 1040 if (net == 0) 1041 mask = addr = 0; 1042 else if (net < 128) { 1043 addr = net << IN_CLASSA_NSHIFT; 1044 mask = IN_CLASSA_NET; 1045 } else if (net < 192) { 1046 addr = net << IN_CLASSA_NSHIFT; 1047 mask = IN_CLASSB_NET; 1048 } else if (net < 224) { 1049 addr = net << IN_CLASSA_NSHIFT; 1050 mask = IN_CLASSC_NET; 1051 } else if (net < 256) { 1052 addr = net << IN_CLASSA_NSHIFT; 1053 mask = IN_CLASSD_NET; 1054 } else if (net < 49152) { /* 192 * 256 */ 1055 addr = net << IN_CLASSB_NSHIFT; 1056 mask = IN_CLASSB_NET; 1057 } else if (net < 57344) { /* 224 * 256 */ 1058 addr = net << IN_CLASSB_NSHIFT; 1059 mask = IN_CLASSC_NET; 1060 } else if (net < 65536) { 1061 addr = net << IN_CLASSB_NSHIFT; 1062 mask = IN_CLASSB_NET; 1063 } else if (net < 14680064L) { /* 224 * 65536 */ 1064 addr = net << IN_CLASSC_NSHIFT; 1065 mask = IN_CLASSC_NET; 1066 } else if (net < 16777216L) { 1067 addr = net << IN_CLASSC_NSHIFT; 1068 mask = IN_CLASSD_NET; 1069 } else { 1070 addr = net; 1071 if ((addr & IN_CLASSA_HOST) == 0) 1072 mask = IN_CLASSA_NET; 1073 else if ((addr & IN_CLASSB_HOST) == 0) 1074 mask = IN_CLASSB_NET; 1075 else if ((addr & IN_CLASSC_HOST) == 0) 1076 mask = IN_CLASSC_NET; 1077 else 1078 mask = -1; 1079 } 1080 isin->sin_addr.s_addr = htonl(addr); 1081 isin = &so_mask.sin; 1082 isin->sin_addr.s_addr = htonl(mask); 1083 isin->sin_len = 0; 1084 isin->sin_family = 0; 1085 cp = (char *)(&isin->sin_addr + 1); 1086 while (*--cp == 0 && cp > (char *)isin) 1087 ; 1088 isin->sin_len = 1 + cp - (char *)isin; 1089 } 1090 1091 #ifdef INET6 1092 /* 1093 * XXX the function may need more improvement... 1094 */ 1095 static int 1096 inet6_makenetandmask(struct sockaddr_in6 *sin6) 1097 { 1098 const char *plen; 1099 struct in6_addr in6; 1100 1101 plen = NULL; 1102 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 1103 sin6->sin6_scope_id == 0) { 1104 plen = "0"; 1105 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 1106 /* aggregatable global unicast - RFC2374 */ 1107 memset(&in6, 0, sizeof(in6)); 1108 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 1109 plen = "64"; 1110 } 1111 1112 if (!plen || strcmp(plen, "128") == 0) 1113 return 1; 1114 else { 1115 rtm_addrs |= RTA_NETMASK; 1116 (void)prefixlen(plen); 1117 return 0; 1118 } 1119 } 1120 #endif 1121 1122 /* 1123 * Interpret an argument as a network address of some kind, 1124 * returning 1 if a host address, 0 if a network address. 1125 */ 1126 static int 1127 getaddr(int which, char *s, struct hostent **hpp) 1128 { 1129 sup su; 1130 struct hostent *hp; 1131 struct netent *np; 1132 u_int32_t val; 1133 char *t; 1134 int afamily; /* local copy of af so we can change it */ 1135 1136 if (af == 0) { 1137 af = AF_INET; 1138 aflen = sizeof(struct sockaddr_in); 1139 } 1140 afamily = af; 1141 rtm_addrs |= which; 1142 switch (which) { 1143 case RTA_DST: 1144 su = &so_dst; 1145 break; 1146 case RTA_GATEWAY: 1147 su = &so_gate; 1148 break; 1149 case RTA_NETMASK: 1150 su = &so_mask; 1151 break; 1152 case RTA_GENMASK: 1153 su = &so_genmask; 1154 break; 1155 case RTA_IFP: 1156 su = &so_ifp; 1157 afamily = AF_LINK; 1158 break; 1159 case RTA_IFA: 1160 su = &so_ifa; 1161 su->sa.sa_family = af; 1162 break; 1163 default: 1164 su = NULL; 1165 usage("Internal Error"); 1166 /*NOTREACHED*/ 1167 } 1168 su->sa.sa_len = aflen; 1169 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1170 if (strcmp(s, "default") == 0) { 1171 switch (which) { 1172 case RTA_DST: 1173 forcenet++; 1174 (void)getaddr(RTA_NETMASK, s, 0); 1175 break; 1176 case RTA_NETMASK: 1177 case RTA_GENMASK: 1178 su->sa.sa_len = 0; 1179 } 1180 return (0); 1181 } 1182 switch (afamily) { 1183 #ifndef SMALL 1184 #ifdef INET6 1185 case AF_INET6: 1186 { 1187 struct addrinfo hints, *res; 1188 char *slash = 0; 1189 1190 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 1191 *slash = '\0'; 1192 memset(&hints, 0, sizeof(hints)); 1193 hints.ai_family = afamily; /*AF_INET6*/ 1194 hints.ai_flags = AI_NUMERICHOST; 1195 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1196 if (getaddrinfo(s, "0", &hints, &res) != 0) { 1197 hints.ai_flags = 0; 1198 if (slash) { 1199 *slash = '/'; 1200 slash = 0; 1201 } 1202 if (getaddrinfo(s, "0", &hints, &res) != 0) 1203 errx(1, "bad value: %s", s); 1204 } 1205 if (slash) 1206 *slash = '/'; 1207 if (sizeof(su->sin6) != res->ai_addrlen) 1208 errx(1, "%s: bad value", s); 1209 if (res->ai_next) 1210 errx(1, "address resolved to multiple values: %s", s); 1211 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1212 freeaddrinfo(res); 1213 #ifdef __KAME__ 1214 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1215 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1216 su->sin6.sin6_scope_id) { 1217 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1218 htons(su->sin6.sin6_scope_id); 1219 su->sin6.sin6_scope_id = 0; 1220 } 1221 #endif 1222 if (hints.ai_flags == AI_NUMERICHOST) { 1223 if (slash) 1224 return (prefixlen(slash + 1)); 1225 if (which == RTA_DST) 1226 return (inet6_makenetandmask(&su->sin6)); 1227 return (0); 1228 } else 1229 return (1); 1230 } 1231 #endif 1232 1233 case AF_NS: 1234 if (which == RTA_DST) { 1235 struct sockaddr_ns *sms = &(so_mask.sns); 1236 memset(sms, 0, sizeof(*sms)); 1237 sms->sns_family = 0; 1238 sms->sns_len = 6; 1239 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1240 rtm_addrs |= RTA_NETMASK; 1241 } 1242 su->sns.sns_addr = ns_addr(s); 1243 return (!ns_nullhost(su->sns.sns_addr)); 1244 1245 case AF_OSI: 1246 su->siso.siso_addr = *iso_addr(s); 1247 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1248 char *cp = (char *)TSEL(&su->siso); 1249 su->siso.siso_nlen = 0; 1250 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1251 su->siso.siso_len = 1 + cp - (char *)su; 1252 } 1253 return (1); 1254 1255 case AF_CCITT: 1256 ccitt_addr(s, &su->sx25); 1257 return (which == RTA_DST ? x25_makemask() : 1); 1258 #endif /* SMALL */ 1259 1260 case PF_ROUTE: 1261 su->sa.sa_len = sizeof(*su); 1262 sockaddr(s, &su->sa); 1263 return (1); 1264 1265 #ifndef SMALL 1266 case AF_APPLETALK: 1267 t = strchr (s, '.'); 1268 if (!t) { 1269 badataddr: 1270 errx(1, "bad address: %s", s); 1271 } 1272 val = atoi (s); 1273 if (val > 65535) 1274 goto badataddr; 1275 su->sat.sat_addr.s_net = val; 1276 val = atoi (t); 1277 if (val > 256) 1278 goto badataddr; 1279 su->sat.sat_addr.s_node = val; 1280 rtm_addrs |= RTA_NETMASK; 1281 return(forcehost || su->sat.sat_addr.s_node != 0); 1282 #endif 1283 1284 case AF_LINK: 1285 link_addr(s, &su->sdl); 1286 return (1); 1287 1288 case AF_INET: 1289 default: 1290 break; 1291 } 1292 1293 if (hpp == NULL) 1294 hpp = &hp; 1295 *hpp = NULL; 1296 1297 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 1298 *t = '\0'; 1299 if (forcenet == 0) { 1300 if ((val = inet_addr(s)) != INADDR_NONE) { 1301 inet_makenetandmask(htonl(val), &su->sin); 1302 return prefixlen(&t[1]); 1303 } 1304 } else { 1305 if ((val = inet_network(s)) != INADDR_NONE) { 1306 inet_makenetandmask(val, &su->sin); 1307 return prefixlen(&t[1]); 1308 } 1309 } 1310 *t = '/'; 1311 } 1312 if (inet_aton(s, &su->sin.sin_addr) && 1313 (which != RTA_DST || forcenet == 0)) { 1314 val = su->sin.sin_addr.s_addr; 1315 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1316 return (1); 1317 else { 1318 val = ntohl(val); 1319 goto netdone; 1320 } 1321 } 1322 if ((val = inet_network(s)) != INADDR_NONE || 1323 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1324 netdone: 1325 if (which == RTA_DST) 1326 inet_makenetandmask(val, &su->sin); 1327 return (0); 1328 } 1329 hp = gethostbyname(s); 1330 if (hp) { 1331 *hpp = hp; 1332 su->sin.sin_family = hp->h_addrtype; 1333 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1334 return (1); 1335 } 1336 errx(1, "bad value: %s", s); 1337 } 1338 1339 int 1340 prefixlen(const char *s) 1341 { 1342 int len = atoi(s), q, r; 1343 int max; 1344 1345 switch (af) { 1346 case AF_INET: 1347 max = sizeof(struct in_addr) * 8; 1348 break; 1349 #ifdef INET6 1350 case AF_INET6: 1351 max = sizeof(struct in6_addr) * 8; 1352 break; 1353 #endif 1354 default: 1355 errx(1, "prefixlen is not supported with af %d", af); 1356 } 1357 1358 rtm_addrs |= RTA_NETMASK; 1359 if (len < -1 || len > max) 1360 errx(1, "bad value: %s", s); 1361 1362 q = len >> 3; 1363 r = len & 7; 1364 switch (af) { 1365 case AF_INET: 1366 memset(&so_mask, 0, sizeof(so_mask)); 1367 so_mask.sin.sin_family = AF_INET; 1368 so_mask.sin.sin_len = sizeof(struct sockaddr_in); 1369 so_mask.sin.sin_addr.s_addr = htonl(0xffffffff << (32 - len)); 1370 break; 1371 #ifdef INET6 1372 case AF_INET6: 1373 so_mask.sin6.sin6_family = AF_INET6; 1374 so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1375 memset((void *)&so_mask.sin6.sin6_addr, 0, 1376 sizeof(so_mask.sin6.sin6_addr)); 1377 if (q > 0) 1378 memset((void *)&so_mask.sin6.sin6_addr, 0xff, q); 1379 if (r > 0) 1380 *((u_char *)&so_mask.sin6.sin6_addr + q) = 1381 (0xff00 >> r) & 0xff; 1382 break; 1383 #endif 1384 } 1385 return (len == max); 1386 } 1387 1388 #ifndef SMALL 1389 int 1390 x25_makemask(void) 1391 { 1392 char *cp; 1393 1394 if ((rtm_addrs & RTA_NETMASK) == 0) { 1395 rtm_addrs |= RTA_NETMASK; 1396 for (cp = (char *)&so_mask.sx25.x25_net; 1397 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1398 *cp = -1; 1399 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1400 } 1401 return 0; 1402 } 1403 1404 1405 const char * 1406 ns_print(struct sockaddr_ns *sns) 1407 { 1408 struct ns_addr work; 1409 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1410 u_short port; 1411 static char mybuf[50], cport[10], chost[25]; 1412 const char *host = ""; 1413 char *p; 1414 u_char *q; 1415 1416 work = sns->sns_addr; 1417 port = ntohs(work.x_port); 1418 work.x_port = 0; 1419 net.net_e = work.x_net; 1420 if (ns_nullhost(work) && net.int32_t_e == 0) { 1421 if (!port) 1422 return ("*.*"); 1423 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1424 return (mybuf); 1425 } 1426 1427 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1428 host = "any"; 1429 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1430 host = "*"; 1431 else { 1432 q = work.x_host.c_host; 1433 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1434 q[0], q[1], q[2], q[3], q[4], q[5]); 1435 for (p = chost; *p == '0' && p < chost + 12; p++) 1436 /* void */; 1437 host = p; 1438 } 1439 if (port) 1440 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1441 else 1442 *cport = 0; 1443 1444 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1445 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1446 return (mybuf); 1447 } 1448 1449 static void 1450 interfaces(void) 1451 { 1452 size_t needed; 1453 int mib[6]; 1454 char *buf, *lim, *next; 1455 struct rt_msghdr *rtm; 1456 1457 mib[0] = CTL_NET; 1458 mib[1] = PF_ROUTE; 1459 mib[2] = 0; /* protocol */ 1460 mib[3] = 0; /* wildcard address family */ 1461 mib[4] = NET_RT_IFLIST; 1462 mib[5] = 0; /* no flags */ 1463 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1464 err(1, "route-sysctl-estimate"); 1465 if ((buf = malloc(needed)) == NULL) 1466 err(1, "malloc"); 1467 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1468 err(1, "actual retrieval of interface table"); 1469 lim = buf + needed; 1470 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1471 rtm = (struct rt_msghdr *)next; 1472 print_rtmsg(rtm, rtm->rtm_msglen); 1473 } 1474 } 1475 1476 static void 1477 monitor(void) 1478 { 1479 int n; 1480 char msg[2048]; 1481 1482 verbose = 1; 1483 if (debugonly) { 1484 interfaces(); 1485 exit(0); 1486 } 1487 for(;;) { 1488 time_t now; 1489 n = read(sock, msg, 2048); 1490 now = time(NULL); 1491 (void)printf("got message of size %d on %s", n, ctime(&now)); 1492 print_rtmsg((struct rt_msghdr *)msg, n); 1493 } 1494 } 1495 1496 #endif /* SMALL */ 1497 1498 1499 struct { 1500 struct rt_msghdr m_rtm; 1501 char m_space[512]; 1502 } m_rtmsg; 1503 1504 static int 1505 rtmsg(int cmd, int flags) 1506 { 1507 static int seq; 1508 int rlen; 1509 char *cp = m_rtmsg.m_space; 1510 int l; 1511 1512 #define NEXTADDR(w, u) \ 1513 if (rtm_addrs & (w)) {\ 1514 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1515 if (verbose && ! shortoutput) sodump(&(u),#u);\ 1516 } 1517 1518 errno = 0; 1519 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1520 if (cmd == 'a') 1521 cmd = RTM_ADD; 1522 else if (cmd == 'c') 1523 cmd = RTM_CHANGE; 1524 else if (cmd == 'g') { 1525 #ifdef SMALL 1526 return (-1); 1527 #else /* SMALL */ 1528 cmd = RTM_GET; 1529 if (so_ifp.sa.sa_family == 0) { 1530 so_ifp.sa.sa_family = AF_LINK; 1531 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1532 rtm_addrs |= RTA_IFP; 1533 } 1534 #endif /* SMALL */ 1535 } else 1536 cmd = RTM_DELETE; 1537 #define rtm m_rtmsg.m_rtm 1538 rtm.rtm_type = cmd; 1539 rtm.rtm_flags = flags; 1540 rtm.rtm_version = RTM_VERSION; 1541 rtm.rtm_seq = ++seq; 1542 rtm.rtm_addrs = rtm_addrs; 1543 rtm.rtm_rmx = rt_metrics; 1544 rtm.rtm_inits = rtm_inits; 1545 1546 if (rtm_addrs & RTA_NETMASK) 1547 mask_addr(); 1548 NEXTADDR(RTA_DST, so_dst); 1549 NEXTADDR(RTA_GATEWAY, so_gate); 1550 NEXTADDR(RTA_NETMASK, so_mask); 1551 NEXTADDR(RTA_GENMASK, so_genmask); 1552 NEXTADDR(RTA_IFP, so_ifp); 1553 NEXTADDR(RTA_IFA, so_ifa); 1554 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1555 if (verbose && ! shortoutput) 1556 print_rtmsg(&rtm, l); 1557 if (debugonly) 1558 return (0); 1559 if ((rlen = write(sock, (char *)&m_rtmsg, l)) < 0) { 1560 warn("writing to routing socket"); 1561 return (-1); 1562 } 1563 #ifndef SMALL 1564 if (cmd == RTM_GET) { 1565 do { 1566 l = read(sock, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1567 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1568 if (l < 0) 1569 err(1, "read from routing socket"); 1570 else 1571 print_getmsg(&rtm, l); 1572 } 1573 #endif /* SMALL */ 1574 #undef rtm 1575 return (0); 1576 } 1577 1578 static void 1579 mask_addr(void) 1580 { 1581 int olen = so_mask.sa.sa_len; 1582 char *cp1 = olen + (char *)&so_mask, *cp2; 1583 1584 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1585 if (*--cp1 != 0) { 1586 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1587 break; 1588 } 1589 if ((rtm_addrs & RTA_DST) == 0) 1590 return; 1591 switch (so_dst.sa.sa_family) { 1592 case AF_INET: 1593 #ifdef INET6 1594 case AF_INET6: 1595 #endif 1596 #ifndef SMALL 1597 case AF_APPLETALK: 1598 case AF_NS: 1599 case AF_CCITT: 1600 #endif /* SMALL */ 1601 case 0: 1602 return; 1603 #ifndef SMALL 1604 case AF_ISO: 1605 olen = MIN(so_dst.siso.siso_nlen, 1606 MAX(so_mask.sa.sa_len - 6, 0)); 1607 break; 1608 #endif /* SMALL */ 1609 } 1610 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1611 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1612 while (cp2 > cp1) 1613 *--cp2 = 0; 1614 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1615 while (cp1 > so_dst.sa.sa_data) 1616 *--cp1 &= *--cp2; 1617 #ifndef SMALL 1618 switch (so_dst.sa.sa_family) { 1619 case AF_ISO: 1620 so_dst.siso.siso_nlen = olen; 1621 break; 1622 } 1623 #endif /* SMALL */ 1624 } 1625 1626 const char *msgtypes[] = { 1627 "", 1628 "RTM_ADD: Add Route", 1629 "RTM_DELETE: Delete Route", 1630 "RTM_CHANGE: Change Metrics or flags", 1631 "RTM_GET: Report Metrics", 1632 "RTM_LOSING: Kernel Suspects Partitioning", 1633 "RTM_REDIRECT: Told to use different route", 1634 "RTM_MISS: Lookup failed on this address", 1635 "RTM_LOCK: fix specified metrics", 1636 "RTM_OLDADD: caused by SIOCADDRT", 1637 "RTM_OLDDEL: caused by SIOCDELRT", 1638 "RTM_RESOLVE: Route created by cloning", 1639 "RTM_NEWADDR: address being added to iface", 1640 "RTM_DELADDR: address being removed from iface", 1641 "RTM_OIFINFO: iface status change (pre-1.5)", 1642 "RTM_IFINFO: iface status change", 1643 "RTM_IFANNOUNCE: iface arrival/departure", 1644 "RTM_IEEE80211: IEEE80211 wireless event", 1645 0, 1646 }; 1647 1648 char metricnames[] = 1649 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1650 char routeflags[] = 1651 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1652 char ifnetflags[] = 1653 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1654 char addrnames[] = 1655 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1656 1657 1658 #ifndef SMALL 1659 static const char * 1660 linkstate(struct if_msghdr *ifm) 1661 { 1662 static char buf[64]; 1663 1664 switch (ifm->ifm_data.ifi_link_state) { 1665 case LINK_STATE_UNKNOWN: 1666 return "carrier: unknown"; 1667 case LINK_STATE_DOWN: 1668 return "carrier: no carrier"; 1669 case LINK_STATE_UP: 1670 return "carrier: active"; 1671 default: 1672 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1673 ifm->ifm_data.ifi_link_state); 1674 return buf; 1675 } 1676 } 1677 #endif /* SMALL */ 1678 1679 static void 1680 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1681 { 1682 struct if_msghdr *ifm; 1683 struct ifa_msghdr *ifam; 1684 struct if_announcemsghdr *ifan; 1685 union { 1686 struct ieee80211_join_event join; 1687 struct ieee80211_leave_event leave; 1688 struct ieee80211_replay_event replay; 1689 struct ieee80211_michael_event michael; 1690 } ev; 1691 size_t evlen = 0; 1692 1693 if (verbose == 0) 1694 return; 1695 if (rtm->rtm_version != RTM_VERSION) { 1696 (void)printf("routing message version %d not understood\n", 1697 rtm->rtm_version); 1698 return; 1699 } 1700 if (msgtypes[rtm->rtm_type]) 1701 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1702 else 1703 (void)printf("#%d: ", rtm->rtm_type); 1704 (void)printf("len %d, ", rtm->rtm_msglen); 1705 switch (rtm->rtm_type) { 1706 case RTM_IFINFO: 1707 ifm = (struct if_msghdr *)rtm; 1708 (void)printf("if# %d, %s, flags:", ifm->ifm_index, 1709 #ifdef SMALL 1710 "" 1711 #else 1712 linkstate(ifm) 1713 #endif /* SMALL */ 1714 ); 1715 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1716 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1717 break; 1718 case RTM_NEWADDR: 1719 case RTM_DELADDR: 1720 ifam = (struct ifa_msghdr *)rtm; 1721 (void)printf("metric %d, flags:", ifam->ifam_metric); 1722 bprintf(stdout, ifam->ifam_flags, routeflags); 1723 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1724 break; 1725 case RTM_IEEE80211: 1726 ifan = (struct if_announcemsghdr *)rtm; 1727 (void)printf("if# %d, what: ", ifan->ifan_index); 1728 switch (ifan->ifan_what) { 1729 case RTM_IEEE80211_ASSOC: 1730 printf("associate"); 1731 break; 1732 case RTM_IEEE80211_REASSOC: 1733 printf("re-associate"); 1734 break; 1735 case RTM_IEEE80211_DISASSOC: 1736 printf("disassociate"); 1737 break; 1738 case RTM_IEEE80211_SCAN: 1739 printf("scan complete"); 1740 break; 1741 case RTM_IEEE80211_JOIN: 1742 evlen = sizeof(ev.join); 1743 printf("join"); 1744 break; 1745 case RTM_IEEE80211_LEAVE: 1746 evlen = sizeof(ev.leave); 1747 printf("leave"); 1748 break; 1749 case RTM_IEEE80211_MICHAEL: 1750 evlen = sizeof(ev.michael); 1751 printf("michael"); 1752 break; 1753 case RTM_IEEE80211_REPLAY: 1754 evlen = sizeof(ev.replay); 1755 printf("replay"); 1756 break; 1757 default: 1758 evlen = 0; 1759 printf("#%d", ifan->ifan_what); 1760 break; 1761 } 1762 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1763 printf(" (truncated)\n"); 1764 break; 1765 } 1766 (void)memcpy(&ev, (ifan + 1), evlen); 1767 switch (ifan->ifan_what) { 1768 case RTM_IEEE80211_JOIN: 1769 case RTM_IEEE80211_LEAVE: 1770 printf(" mac %" PRIETHER, 1771 PRIETHER_ARGS(ev.join.iev_addr)); 1772 break; 1773 case RTM_IEEE80211_REPLAY: 1774 case RTM_IEEE80211_MICHAEL: 1775 printf(" src %" PRIETHER " dst %" PRIETHER 1776 " cipher %" PRIu8 " keyix %" PRIu8, 1777 PRIETHER_ARGS(ev.replay.iev_src), 1778 PRIETHER_ARGS(ev.replay.iev_dst), 1779 ev.replay.iev_cipher, 1780 ev.replay.iev_keyix); 1781 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1782 printf(" key rsc %#" PRIx64 1783 " frame rsc %#" PRIx64, 1784 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1785 } 1786 break; 1787 default: 1788 break; 1789 } 1790 printf("\n"); 1791 break; 1792 case RTM_IFANNOUNCE: 1793 ifan = (struct if_announcemsghdr *)rtm; 1794 (void)printf("if# %d, what: ", ifan->ifan_index); 1795 switch (ifan->ifan_what) { 1796 case IFAN_ARRIVAL: 1797 printf("arrival"); 1798 break; 1799 case IFAN_DEPARTURE: 1800 printf("departure"); 1801 break; 1802 default: 1803 printf("#%d", ifan->ifan_what); 1804 break; 1805 } 1806 printf("\n"); 1807 break; 1808 default: 1809 (void)printf("pid: %d, seq %d, errno %d, flags:", 1810 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1811 bprintf(stdout, rtm->rtm_flags, routeflags); 1812 pmsg_common(rtm); 1813 } 1814 } 1815 1816 #ifndef SMALL 1817 static void 1818 print_getmsg(struct rt_msghdr *rtm, int msglen) 1819 { 1820 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1821 struct sockaddr_dl *ifp = NULL; 1822 struct sockaddr *sa; 1823 char *cp; 1824 int i; 1825 1826 if (! shortoutput) 1827 (void)printf(" route to: %s\n", 1828 routename((struct sockaddr *) &so_dst, NULL, RTF_HOST)); 1829 if (rtm->rtm_version != RTM_VERSION) { 1830 warnx("routing message version %d not understood", 1831 rtm->rtm_version); 1832 return; 1833 } 1834 if (rtm->rtm_msglen > msglen) { 1835 warnx("message length mismatch, in packet %d, returned %d", 1836 rtm->rtm_msglen, msglen); 1837 } 1838 if (rtm->rtm_errno) { 1839 warn("RTM_GET"); 1840 return; 1841 } 1842 cp = ((char *)(rtm + 1)); 1843 if (rtm->rtm_addrs) 1844 for (i = 1; i; i <<= 1) 1845 if (i & rtm->rtm_addrs) { 1846 sa = (struct sockaddr *)cp; 1847 switch (i) { 1848 case RTA_DST: 1849 dst = sa; 1850 break; 1851 case RTA_GATEWAY: 1852 gate = sa; 1853 break; 1854 case RTA_NETMASK: 1855 mask = sa; 1856 break; 1857 case RTA_IFP: 1858 if (sa->sa_family == AF_LINK && 1859 ((struct sockaddr_dl *)sa)->sdl_nlen) 1860 ifp = (struct sockaddr_dl *)sa; 1861 break; 1862 case RTA_IFA: 1863 ifa = sa; 1864 break; 1865 } 1866 ADVANCE(cp, sa); 1867 } 1868 if (dst && mask) 1869 mask->sa_family = dst->sa_family; /* XXX */ 1870 if (dst && ! shortoutput) 1871 (void)printf("destination: %s\n", 1872 routename(dst, mask, RTF_HOST)); 1873 if (mask && ! shortoutput) { 1874 int savenflag = nflag; 1875 1876 nflag = 1; 1877 (void)printf(" mask: %s\n", 1878 routename(mask, NULL, RTF_HOST)); 1879 nflag = savenflag; 1880 } 1881 if (gate && rtm->rtm_flags & RTF_GATEWAY && ! shortoutput) 1882 (void)printf(" gateway: %s\n", 1883 routename(gate, NULL, RTF_HOST)); 1884 if (ifa && ! shortoutput) 1885 (void)printf(" local addr: %s\n", 1886 routename(ifa, NULL, RTF_HOST)); 1887 if (ifp && ! shortoutput) 1888 (void)printf(" interface: %.*s\n", 1889 ifp->sdl_nlen, ifp->sdl_data); 1890 if (! shortoutput) { 1891 (void)printf(" flags: "); 1892 bprintf(stdout, rtm->rtm_flags, routeflags); 1893 } 1894 1895 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1896 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1897 1898 if (! shortoutput) { 1899 (void)printf("\n%s\n", "\ 1900 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1901 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1902 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1903 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1904 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1905 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1906 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1907 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1908 if (rtm->rtm_rmx.rmx_expire) 1909 rtm->rtm_rmx.rmx_expire -= time(0); 1910 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1911 } 1912 #undef lock 1913 #undef msec 1914 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1915 1916 if ((rtm->rtm_addrs & RTF_GATEWAY) == 0) 1917 rv = 1; 1918 else { 1919 const char *name; 1920 int addrs; 1921 1922 cp = (char *)(rtm + 1); 1923 addrs = rtm->rtm_addrs; 1924 1925 for (i = 1; i; i <<= 1) { 1926 sa = (struct sockaddr *)cp; 1927 if (i == RTF_GATEWAY) { 1928 name = routename(sa, NULL, RTF_HOST); 1929 if (name[0] == '\0') 1930 rv = 1; 1931 else if (shortoutput) 1932 printf("%s\n", name); 1933 } 1934 if (i & addrs) 1935 ADVANCE(cp, sa); 1936 } 1937 } 1938 1939 if (shortoutput) 1940 return; 1941 else if (verbose) 1942 pmsg_common(rtm); 1943 else if (rtm->rtm_addrs &~ RTA_IGN) { 1944 (void)printf("sockaddrs: "); 1945 bprintf(stdout, rtm->rtm_addrs, addrnames); 1946 putchar('\n'); 1947 } 1948 #undef RTA_IGN 1949 } 1950 #endif /* SMALL */ 1951 1952 void 1953 pmsg_common(struct rt_msghdr *rtm) 1954 { 1955 (void)printf("\nlocks: "); 1956 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1957 (void)printf(" inits: "); 1958 bprintf(stdout, rtm->rtm_inits, metricnames); 1959 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1960 } 1961 1962 static void 1963 pmsg_addrs(char *cp, int addrs) 1964 { 1965 struct sockaddr *sa; 1966 int i; 1967 1968 if (addrs != 0) { 1969 (void)printf("\nsockaddrs: "); 1970 bprintf(stdout, addrs, addrnames); 1971 (void)putchar('\n'); 1972 for (i = 1; i; i <<= 1) 1973 if (i & addrs) { 1974 sa = (struct sockaddr *)cp; 1975 (void)printf(" %s", 1976 routename(sa, NULL, RTF_HOST)); 1977 ADVANCE(cp, sa); 1978 } 1979 } 1980 (void)putchar('\n'); 1981 (void)fflush(stdout); 1982 } 1983 1984 static void 1985 bprintf(FILE *fp, int b, u_char *s) 1986 { 1987 int i; 1988 int gotsome = 0; 1989 1990 if (b == 0) 1991 return; 1992 while ((i = *s++) != 0) { 1993 if (b & (1 << (i-1))) { 1994 if (gotsome == 0) 1995 i = '<'; 1996 else 1997 i = ','; 1998 (void)putc(i, fp); 1999 gotsome = 1; 2000 for (; (i = *s) > 32; s++) 2001 (void)putc(i, fp); 2002 } else 2003 while (*s > 32) 2004 s++; 2005 } 2006 if (gotsome) 2007 (void)putc('>', fp); 2008 } 2009 2010 int 2011 keyword(char *cp) 2012 { 2013 struct keytab *kt = keywords; 2014 2015 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 2016 kt++; 2017 return kt->kt_i; 2018 } 2019 2020 static void 2021 sodump(sup su, const char *which) 2022 { 2023 #ifdef INET6 2024 char ntop_buf[NI_MAXHOST]; 2025 #endif 2026 2027 switch (su->sa.sa_family) { 2028 case AF_INET: 2029 (void)printf("%s: inet %s; ", 2030 which, inet_ntoa(su->sin.sin_addr)); 2031 break; 2032 #ifndef SMALL 2033 case AF_APPLETALK: 2034 (void)printf("%s: atalk %d.%d; ", 2035 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 2036 break; 2037 #endif 2038 case AF_LINK: 2039 (void)printf("%s: link %s; ", 2040 which, link_ntoa(&su->sdl)); 2041 break; 2042 #ifndef SMALL 2043 #ifdef INET6 2044 case AF_INET6: 2045 (void)printf("%s: inet6 %s; ", 2046 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 2047 ntop_buf, sizeof(ntop_buf))); 2048 break; 2049 #endif 2050 case AF_ISO: 2051 (void)printf("%s: iso %s; ", 2052 which, iso_ntoa(&su->siso.siso_addr)); 2053 break; 2054 case AF_NS: 2055 (void)printf("%s: xns %s; ", 2056 which, ns_ntoa(su->sns.sns_addr)); 2057 break; 2058 #endif /* SMALL */ 2059 default: 2060 (void)printf("%s: (%d) %s; ", 2061 which, su->sa.sa_family, any_ntoa(&su->sa)); 2062 } 2063 (void)fflush(stdout); 2064 } 2065 2066 /* States*/ 2067 #define VIRGIN 0 2068 #define GOTONE 1 2069 #define GOTTWO 2 2070 /* Inputs */ 2071 #define DIGIT (4*0) 2072 #define END (4*1) 2073 #define DELIM (4*2) 2074 2075 static void 2076 sockaddr(char *addr, struct sockaddr *sa) 2077 { 2078 char *cp = (char *)sa; 2079 int size = sa->sa_len; 2080 char *cplim = cp + size; 2081 int byte = 0, state = VIRGIN, new = 0; 2082 2083 (void)memset(cp, 0, size); 2084 cp++; 2085 do { 2086 if ((*addr >= '0') && (*addr <= '9')) { 2087 new = *addr - '0'; 2088 } else if ((*addr >= 'a') && (*addr <= 'f')) { 2089 new = *addr - 'a' + 10; 2090 } else if ((*addr >= 'A') && (*addr <= 'F')) { 2091 new = *addr - 'A' + 10; 2092 } else if (*addr == 0) 2093 state |= END; 2094 else 2095 state |= DELIM; 2096 addr++; 2097 switch (state /* | INPUT */) { 2098 case GOTTWO | DIGIT: 2099 *cp++ = byte; /*FALLTHROUGH*/ 2100 case VIRGIN | DIGIT: 2101 state = GOTONE; byte = new; continue; 2102 case GOTONE | DIGIT: 2103 state = GOTTWO; byte = new + (byte << 4); continue; 2104 default: /* | DELIM */ 2105 state = VIRGIN; *cp++ = byte; byte = 0; continue; 2106 case GOTONE | END: 2107 case GOTTWO | END: 2108 *cp++ = byte; /* FALLTHROUGH */ 2109 case VIRGIN | END: 2110 break; 2111 } 2112 break; 2113 } while (cp < cplim); 2114 sa->sa_len = cp - (char *)sa; 2115 } 2116
Indexes created Mon Sep 29 21:09:56 GMT 2025