route.c revision 1.91
1 /* $NetBSD: route.c,v 1.91 2005/08/15 19:28:08 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 1.91 2005/08/15 19:28:08 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 const char *route_strerror(int); 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 int 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 void sodump(sup, const char *); 105 static void sockaddr(char *, struct sockaddr *); 106 107 union sockunion { 108 struct sockaddr sa; 109 struct sockaddr_in sin; 110 #ifdef INET6 111 struct sockaddr_in6 sin6; 112 #endif 113 struct sockaddr_at sat; 114 struct sockaddr_dl sdl; 115 #ifndef SMALL 116 struct sockaddr_ns sns; 117 struct sockaddr_iso siso; 118 struct sockaddr_x25 sx25; 119 #endif /* SMALL */ 120 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 121 122 int pid, rtm_addrs; 123 int sock; 124 int forcehost, forcenet, doflush, nflag, af, qflag, tflag; 125 int iflag, verbose, aflen = sizeof(struct sockaddr_in); 126 int locking, lockrest, debugonly, shortoutput; 127 struct rt_metrics rt_metrics; 128 u_int32_t rtm_inits; 129 short ns_nullh[] = {0,0,0}; 130 short ns_bh[] = {-1,-1,-1}; 131 132 133 void 134 usage(const char *cp) 135 { 136 137 if (cp) 138 warnx("botched keyword: %s", cp); 139 (void)fprintf(stderr, 140 "Usage: %s [ -fnqvs ] cmd [[ -<qualifers> ] args ]\n", 141 getprogname()); 142 exit(1); 143 /* NOTREACHED */ 144 } 145 146 #define PRIETHER "02x:%02x:%02x:%02x:%02x:%02x" 147 #define PRIETHER_ARGS(__enaddr) (__enaddr)[0], (__enaddr)[1], (__enaddr)[2], \ 148 (__enaddr)[3], (__enaddr)[4], (__enaddr)[5] 149 #define ROUNDUP(a) \ 150 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 151 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 152 153 int 154 main(int argc, char **argv) 155 { 156 int ch; 157 158 if (argc < 2) 159 usage(NULL); 160 161 while ((ch = getopt(argc, argv, "dfnqstv")) != -1) 162 switch (ch) { 163 case 'd': 164 debugonly = 1; 165 break; 166 case 'f': 167 doflush = 1; 168 break; 169 case 'n': 170 nflag = 1; 171 break; 172 case 'q': 173 qflag = 1; 174 break; 175 case 's': 176 shortoutput = 1; 177 break; 178 case 't': 179 tflag = 1; 180 break; 181 case 'v': 182 verbose = 1; 183 break; 184 case '?': 185 default: 186 usage(NULL); 187 /*NOTREACHED*/ 188 } 189 argc -= optind; 190 argv += optind; 191 192 pid = getpid(); 193 if (tflag) 194 sock = open("/dev/null", O_WRONLY, 0); 195 else 196 sock = socket(PF_ROUTE, SOCK_RAW, 0); 197 if (sock < 0) 198 err(1, "socket"); 199 200 if (*argv == NULL) { 201 if (doflush) 202 ch = K_FLUSH; 203 else 204 goto no_cmd; 205 } else 206 ch = keyword(*argv); 207 208 switch (ch) { 209 #ifndef SMALL 210 case K_GET: 211 #endif /* SMALL */ 212 case K_CHANGE: 213 case K_ADD: 214 case K_DELETE: 215 if (doflush) 216 (void)flushroutes(1, argv, 0); 217 return newroute(argc, argv); 218 219 case K_SHOW: 220 show(argc, argv); 221 return 0; 222 223 #ifndef SMALL 224 case K_MONITOR: 225 monitor(); 226 return 0; 227 228 #endif /* SMALL */ 229 case K_FLUSH: 230 return flushroutes(argc, argv, 0); 231 232 case K_FLUSHALL: 233 return flushroutes(argc, argv, 1); 234 no_cmd: 235 default: 236 usage(*argv); 237 /*NOTREACHED*/ 238 } 239 } 240 241 /* 242 * Purge all entries in the routing tables not 243 * associated with network interfaces. 244 */ 245 static int 246 flushroutes(int argc, char *argv[], int doall) 247 { 248 size_t needed; 249 int mib[6], rlen, seqno; 250 char *buf, *next, *lim; 251 struct rt_msghdr *rtm; 252 253 af = 0; 254 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 255 if (argc > 1) { 256 argv++; 257 if (argc == 2 && **argv == '-') 258 switch (keyword(*argv + 1)) { 259 case K_INET: 260 af = AF_INET; 261 break; 262 #ifdef INET6 263 case K_INET6: 264 af = AF_INET6; 265 break; 266 #endif 267 #ifndef SMALL 268 case K_ATALK: 269 af = AF_APPLETALK; 270 break; 271 case K_XNS: 272 af = AF_NS; 273 break; 274 #endif /* SMALL */ 275 case K_LINK: 276 af = AF_LINK; 277 break; 278 #ifndef SMALL 279 case K_ISO: 280 case K_OSI: 281 af = AF_ISO; 282 break; 283 case K_X25: 284 af = AF_CCITT; 285 #endif /* SMALL */ 286 default: 287 goto bad; 288 } else 289 bad: usage(*argv); 290 } 291 mib[0] = CTL_NET; 292 mib[1] = PF_ROUTE; 293 mib[2] = 0; /* protocol */ 294 mib[3] = 0; /* wildcard address family */ 295 mib[4] = NET_RT_DUMP; 296 mib[5] = 0; /* no flags */ 297 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 298 err(1, "route-sysctl-estimate"); 299 if (needed == 0) 300 return 0; 301 if ((buf = malloc(needed)) == NULL) 302 err(1, "malloc"); 303 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 304 err(1, "actual retrieval of routing table"); 305 lim = buf + needed; 306 if (verbose) { 307 (void)printf("Examining routing table from sysctl\n"); 308 if (af) 309 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 if ((rlen = write(sock, next, rtm->rtm_msglen)) < 0) { 330 warnx("writing to routing socket: %s", 331 route_strerror(errno)); 332 return 1; 333 } 334 if (rlen < (int)rtm->rtm_msglen) { 335 warnx("write to routing socket, got %d for rlen", rlen); 336 return 1; 337 } 338 seqno++; 339 if (qflag) 340 continue; 341 if (verbose) 342 print_rtmsg(rtm, rlen); 343 else { 344 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 345 (void)printf("%-20.20s ", 346 routename(sa, NULL, rtm->rtm_flags)); 347 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 348 (void)printf("%-20.20s ", 349 routename(sa, NULL, RTF_HOST)); 350 (void)printf("done\n"); 351 } 352 } 353 return 0; 354 } 355 356 357 static char hexlist[] = "0123456789abcdef"; 358 359 static char * 360 any_ntoa(const struct sockaddr *sa) 361 { 362 static char obuf[3 * 256]; 363 const char *in; 364 char *out; 365 int len; 366 367 #if __GNUC__ > 2 368 len = sa->sa_len - offsetof(struct sockaddr, sa_data); 369 #else 370 len = sa->sa_len - ((struct sockaddr*)&sa->sa_data - sa); 371 #endif 372 in = sa->sa_data; 373 out = obuf; 374 375 do { 376 *out++ = hexlist[(*in >> 4) & 15]; 377 *out++ = hexlist[(*in++) & 15]; 378 *out++ = '.'; 379 } while (--len > 0); 380 out[-1] = '\0'; 381 return obuf; 382 } 383 384 385 int 386 netmask_length(struct sockaddr *nm, int family) 387 { 388 static int 389 /* number of bits in a nibble */ 390 _t[] = { 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4 }, 391 /* good nibbles are 1111, 1110, 1100, 1000, 0000 */ 392 _g[] = { 1,0,0,0,0,0,0,0,1,0,0,0,1,0,1,1 }; 393 int mask, good, zeroes, maskbytes, bit, i; 394 unsigned char *maskdata; 395 396 if (nm == NULL) 397 return 0; 398 399 mask = 0; 400 good = 1; 401 zeroes = 0; 402 403 switch (family) { 404 case AF_INET: { 405 struct sockaddr_in *nsin = (struct sockaddr_in *)nm; 406 maskdata = (unsigned char *)&nsin->sin_addr; 407 maskbytes = nsin->sin_len - 408 ((caddr_t)&nsin->sin_addr - (caddr_t)nsin); 409 break; 410 } 411 case AF_INET6: { 412 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nm; 413 maskdata = (unsigned char *)&sin6->sin6_addr; 414 maskbytes = sin6->sin6_len - 415 ((caddr_t)&sin6->sin6_addr - (caddr_t)sin6); 416 break; 417 } 418 default: 419 return 0; 420 } 421 422 /* 423 * Count the bits in the nibbles of the mask, and marking the 424 * netmask as not good (or at best, non-standard and very 425 * discouraged, in the case of AF_INET) if we find either of 426 * a nibble with non-contiguous bits, or a non-zero nibble 427 * after we've found a zero nibble. 428 */ 429 for (i = 0; i < maskbytes; i++) { 430 /* high nibble */ 431 mask += bit = _t[maskdata[i] >> 4]; 432 good &= _g[maskdata[i] >> 4]; 433 if (zeroes && bit) 434 good = 0; 435 if (bit == 0) 436 zeroes = 1; 437 /* low nibble */ 438 mask += bit = _t[maskdata[i] & 0xf]; 439 good &= _g[maskdata[i] & 0xf]; 440 if (zeroes && bit) 441 good = 0; 442 if (bit == 0) 443 zeroes = 1; 444 } 445 446 /* 447 * Always return the number of bits found, but as a negative 448 * if the mask wasn't one we like. 449 */ 450 return good ? mask : -mask; 451 } 452 453 char * 454 netmask_string(struct sockaddr *mask, int len, int family) 455 { 456 static char smask[INET6_ADDRSTRLEN]; 457 struct sockaddr_in nsin; 458 struct sockaddr_in6 nsin6; 459 460 if (len >= 0) 461 snprintf(smask, sizeof(smask), "%d", len); 462 else { 463 switch (family) { 464 case AF_INET: 465 memset(&nsin, 0, sizeof(nsin)); 466 memcpy(&nsin, mask, mask->sa_len); 467 snprintf(smask, sizeof(smask), "%s", 468 inet_ntoa(nsin.sin_addr)); 469 break; 470 case AF_INET6: 471 memset(&nsin6, 0, sizeof(nsin6)); 472 memcpy(&nsin6, mask, mask->sa_len); 473 inet_ntop(family, &nsin6.sin6_addr, smask, 474 sizeof(smask)); 475 break; 476 default: 477 snprintf(smask, sizeof(smask), "%s", any_ntoa(mask)); 478 } 479 } 480 481 return smask; 482 } 483 484 485 const char * 486 routename(struct sockaddr *sa, struct sockaddr *nm, int flags) 487 { 488 const char *cp; 489 static char line[50]; 490 struct hostent *hp; 491 static char domain[MAXHOSTNAMELEN + 1]; 492 static int first = 1; 493 struct in_addr in; 494 int nml; 495 496 if ((flags & RTF_HOST) == 0) 497 return netname(sa, nm); 498 499 if (first) { 500 first = 0; 501 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 502 (cp = strchr(domain, '.'))) 503 (void)strlcpy(domain, cp + 1, sizeof(domain)); 504 else 505 domain[0] = 0; 506 } 507 508 if (sa->sa_len == 0) 509 strlcpy(line, "default", sizeof(line)); 510 else switch (sa->sa_family) { 511 512 case AF_INET: 513 in = ((struct sockaddr_in *)sa)->sin_addr; 514 nml = netmask_length(nm, AF_INET); 515 516 cp = 0; 517 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) { 518 if (nml == 0) 519 cp = "default"; 520 else { 521 static char notdefault[sizeof(NOTDEFSTRING)]; 522 523 snprintf(notdefault, sizeof(notdefault), 524 "0.0.0.0/%s", 525 netmask_string(nm, nml, AF_INET)); 526 cp = notdefault; 527 } 528 } 529 if (cp == 0 && !nflag) { 530 hp = gethostbyaddr((char *)&in, sizeof(struct in_addr), 531 AF_INET); 532 if (hp) { 533 char *ccp; 534 if ((ccp = strchr(hp->h_name, '.')) && 535 !strcmp(ccp + 1, domain)) 536 *ccp = 0; 537 cp = hp->h_name; 538 } 539 } 540 if (cp) 541 (void)strlcpy(line, cp, sizeof(line)); 542 else 543 (void)strlcpy(line, inet_ntoa(in), sizeof(line)); 544 break; 545 546 case AF_LINK: 547 return (link_ntoa((struct sockaddr_dl *)sa)); 548 549 #ifndef SMALL 550 #ifdef INET6 551 case AF_INET6: 552 { 553 struct sockaddr_in6 sin6; 554 int niflags; 555 char nihost[NI_MAXHOST]; 556 557 niflags = 0; 558 if (nflag) 559 niflags |= NI_NUMERICHOST; 560 memset(&sin6, 0, sizeof(sin6)); 561 memcpy(&sin6, sa, sa->sa_len); 562 sin6.sin6_len = sizeof(struct sockaddr_in6); 563 sin6.sin6_family = AF_INET6; 564 #ifdef __KAME__ 565 if (sa->sa_len == sizeof(struct sockaddr_in6) && 566 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 567 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 568 sin6.sin6_scope_id == 0) { 569 sin6.sin6_scope_id = 570 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 571 sin6.sin6_addr.s6_addr[2] = 0; 572 sin6.sin6_addr.s6_addr[3] = 0; 573 } 574 #endif 575 nml = netmask_length(nm, AF_INET6); 576 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 577 if (nml == 0) 578 strlcpy(line, "::", sizeof(line)); 579 else 580 /* noncontiguous never happens in ipv6 */ 581 snprintf(line, sizeof(line), "::/%d", nml); 582 } 583 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 584 nihost, sizeof(nihost), NULL, 0, niflags) != 0) 585 strlcpy(line, "invalid", sizeof(line)); 586 else { 587 char *ccp; 588 if (!nflag && (ccp = strchr(nihost, '.')) && 589 strcmp(ccp + 1, domain) == 0) 590 *ccp = 0; 591 strlcpy(line, nihost, sizeof(line)); 592 } 593 break; 594 } 595 #endif 596 597 case AF_NS: 598 return (ns_print((struct sockaddr_ns *)sa)); 599 600 case AF_ISO: 601 (void)snprintf(line, sizeof line, "iso %s", 602 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 603 break; 604 605 case AF_APPLETALK: 606 (void)snprintf(line, sizeof(line), "atalk %d.%d", 607 ((struct sockaddr_at *)sa)->sat_addr.s_net, 608 ((struct sockaddr_at *)sa)->sat_addr.s_node); 609 break; 610 #endif /* SMALL */ 611 612 default: 613 (void)snprintf(line, sizeof line, "(%d) %s", 614 sa->sa_family, any_ntoa(sa)); 615 break; 616 617 } 618 return (line); 619 } 620 621 /* 622 * Return the name of the network whose address is given. 623 * The address is assumed to be that of a net or subnet, not a host. 624 */ 625 const char * 626 netname(struct sockaddr *sa, struct sockaddr *nm) 627 { 628 const char *cp = 0; 629 static char line[50]; 630 struct netent *np = 0; 631 u_int32_t net, mask; 632 u_int32_t i; 633 int subnetshift, nml; 634 struct in_addr in; 635 636 switch (sa->sa_family) { 637 638 case AF_INET: 639 in = ((struct sockaddr_in *)sa)->sin_addr; 640 i = ntohl(in.s_addr); 641 nml = netmask_length(nm, AF_INET); 642 if (i == 0) { 643 if (nml == 0) 644 cp = "default"; 645 else { 646 static char notdefault[sizeof(NOTDEFSTRING)]; 647 648 snprintf(notdefault, sizeof(notdefault), 649 "0.0.0.0/%s", 650 netmask_string(nm, nml, AF_INET)); 651 cp = notdefault; 652 } 653 } 654 else if (!nflag) { 655 if (IN_CLASSA(i)) { 656 mask = IN_CLASSA_NET; 657 subnetshift = 8; 658 } else if (IN_CLASSB(i)) { 659 mask = IN_CLASSB_NET; 660 subnetshift = 8; 661 } else { 662 mask = IN_CLASSC_NET; 663 subnetshift = 4; 664 } 665 /* 666 * If there are more bits than the standard mask 667 * would suggest, subnets must be in use. 668 * Guess at the subnet mask, assuming reasonable 669 * width subnet fields. 670 */ 671 while (i &~ mask) 672 mask = (int32_t)mask >> subnetshift; 673 net = i & mask; 674 while ((mask & 1) == 0) 675 mask >>= 1, net >>= 1; 676 np = getnetbyaddr(net, AF_INET); 677 if (np) 678 cp = np->n_name; 679 } 680 if (cp) 681 (void)strlcpy(line, cp, sizeof(line)); 682 else { 683 #if 0 /* XXX - This is silly... */ 684 #define C(x) ((x) & 0xff) 685 if ((i & 0xffffff) == 0) 686 (void)snprintf(line, sizeof line, "%u", 687 C(i >> 24)); 688 else if ((i & 0xffff) == 0) 689 (void)snprintf(line, sizeof line, "%u.%u", 690 C(i >> 24), C(i >> 16)); 691 else if ((i & 0xff) == 0) 692 (void)snprintf(line, sizeof line, "%u.%u.%u", 693 C(i >> 24), C(i >> 16), C(i >> 8)); 694 else 695 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 696 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 697 #undef C 698 #else /* XXX */ 699 if (nml == 0) 700 strlcpy(line, inet_ntoa(in), sizeof(line)); 701 else 702 snprintf(line, sizeof(line), "%s/%d", inet_ntoa(in), nml); 703 #endif /* XXX */ 704 } 705 break; 706 707 case AF_LINK: 708 return (link_ntoa((struct sockaddr_dl *)sa)); 709 710 #ifndef SMALL 711 #ifdef INET6 712 case AF_INET6: 713 { 714 struct sockaddr_in6 sin6; 715 int niflags; 716 717 niflags = 0; 718 if (nflag) 719 niflags |= NI_NUMERICHOST; 720 memset(&sin6, 0, sizeof(sin6)); 721 memcpy(&sin6, sa, sa->sa_len); 722 sin6.sin6_len = sizeof(struct sockaddr_in6); 723 sin6.sin6_family = AF_INET6; 724 #ifdef __KAME__ 725 if (sa->sa_len == sizeof(struct sockaddr_in6) && 726 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 727 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 728 sin6.sin6_scope_id == 0) { 729 sin6.sin6_scope_id = 730 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 731 sin6.sin6_addr.s6_addr[2] = 0; 732 sin6.sin6_addr.s6_addr[3] = 0; 733 } 734 #endif 735 nml = netmask_length(nm, AF_INET6); 736 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 737 if (nml == 0) 738 strlcpy(line, "::", sizeof(line)); 739 else 740 /* noncontiguous never happens in ipv6 */ 741 snprintf(line, sizeof(line), "::/%d", nml); 742 } 743 744 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 745 line, sizeof(line), NULL, 0, niflags) != 0) 746 strlcpy(line, "invalid", sizeof(line)); 747 break; 748 } 749 #endif 750 751 case AF_NS: 752 return (ns_print((struct sockaddr_ns *)sa)); 753 754 case AF_ISO: 755 (void)snprintf(line, sizeof line, "iso %s", 756 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 757 break; 758 759 case AF_APPLETALK: 760 (void)snprintf(line, sizeof(line), "atalk %d.%d", 761 ((struct sockaddr_at *)sa)->sat_addr.s_net, 762 ((struct sockaddr_at *)sa)->sat_addr.s_node); 763 break; 764 #endif /* SMALL */ 765 766 default: 767 (void)snprintf(line, sizeof line, "af %d: %s", 768 sa->sa_family, any_ntoa(sa)); 769 break; 770 } 771 return (line); 772 } 773 774 static const char * 775 route_strerror(int error) 776 { 777 778 switch (error) { 779 case ESRCH: 780 return "not in table"; 781 case EBUSY: 782 return "entry in use"; 783 case ENOBUFS: 784 return "routing table overflow"; 785 default: 786 return strerror(error); 787 } 788 } 789 790 static void 791 set_metric(char *value, int key) 792 { 793 int flag = 0; 794 u_long noval, *valp = &noval; 795 796 switch (key) { 797 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 798 caseof(K_MTU, RTV_MTU, rmx_mtu); 799 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 800 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 801 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 802 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 803 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 804 caseof(K_RTT, RTV_RTT, rmx_rtt); 805 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 806 } 807 rtm_inits |= flag; 808 if (lockrest || locking) 809 rt_metrics.rmx_locks |= flag; 810 if (locking) 811 locking = 0; 812 *valp = atoi(value); 813 } 814 815 static int 816 newroute(int argc, char **argv) 817 { 818 const char *cmd, *dest = "", *gateway = ""; 819 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 820 int key; 821 struct hostent *hp = 0; 822 823 cmd = argv[0]; 824 af = 0; 825 if (*cmd != 'g') 826 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 827 while (--argc > 0) { 828 if (**(++argv)== '-') { 829 switch (key = keyword(1 + *argv)) { 830 831 case K_SA: 832 af = PF_ROUTE; 833 aflen = sizeof(union sockunion); 834 break; 835 836 #ifndef SMALL 837 case K_ATALK: 838 af = AF_APPLETALK; 839 aflen = sizeof(struct sockaddr_at); 840 break; 841 #endif 842 843 case K_INET: 844 af = AF_INET; 845 aflen = sizeof(struct sockaddr_in); 846 break; 847 848 #ifdef INET6 849 case K_INET6: 850 af = AF_INET6; 851 aflen = sizeof(struct sockaddr_in6); 852 break; 853 #endif 854 855 case K_LINK: 856 af = AF_LINK; 857 aflen = sizeof(struct sockaddr_dl); 858 break; 859 860 #ifndef SMALL 861 case K_OSI: 862 case K_ISO: 863 af = AF_ISO; 864 aflen = sizeof(struct sockaddr_iso); 865 break; 866 867 case K_X25: 868 af = AF_CCITT; 869 aflen = sizeof(struct sockaddr_x25); 870 break; 871 872 case K_XNS: 873 af = AF_NS; 874 aflen = sizeof(struct sockaddr_ns); 875 break; 876 #endif /* SMALL */ 877 878 case K_IFACE: 879 case K_INTERFACE: 880 iflag++; 881 break; 882 case K_NOSTATIC: 883 flags &= ~RTF_STATIC; 884 break; 885 case K_LLINFO: 886 flags |= RTF_LLINFO; 887 break; 888 case K_LOCK: 889 locking = 1; 890 break; 891 case K_LOCKREST: 892 lockrest = 1; 893 break; 894 case K_HOST: 895 forcehost++; 896 break; 897 case K_REJECT: 898 flags |= RTF_REJECT; 899 break; 900 case K_BLACKHOLE: 901 flags |= RTF_BLACKHOLE; 902 break; 903 case K_CLONED: 904 flags |= RTF_CLONED; 905 break; 906 case K_PROTO1: 907 flags |= RTF_PROTO1; 908 break; 909 case K_PROTO2: 910 flags |= RTF_PROTO2; 911 break; 912 case K_CLONING: 913 flags |= RTF_CLONING; 914 break; 915 case K_XRESOLVE: 916 flags |= RTF_XRESOLVE; 917 break; 918 case K_STATIC: 919 flags |= RTF_STATIC; 920 break; 921 case K_IFA: 922 if (!--argc) 923 usage(1+*argv); 924 (void)getaddr(RTA_IFA, *++argv, 0); 925 break; 926 case K_IFP: 927 if (!--argc) 928 usage(1+*argv); 929 (void)getaddr(RTA_IFP, *++argv, 0); 930 break; 931 case K_GENMASK: 932 if (!--argc) 933 usage(1+*argv); 934 (void)getaddr(RTA_GENMASK, *++argv, 0); 935 break; 936 case K_GATEWAY: 937 if (!--argc) 938 usage(1+*argv); 939 (void)getaddr(RTA_GATEWAY, *++argv, 0); 940 break; 941 case K_DST: 942 if (!--argc) 943 usage(1+*argv); 944 ishost = getaddr(RTA_DST, *++argv, &hp); 945 dest = *argv; 946 break; 947 case K_NETMASK: 948 if (!--argc) 949 usage(1+*argv); 950 (void)getaddr(RTA_NETMASK, *++argv, 0); 951 /* FALLTHROUGH */ 952 case K_NET: 953 forcenet++; 954 break; 955 case K_PREFIXLEN: 956 if (!--argc) 957 usage(1+*argv); 958 ishost = prefixlen(*++argv); 959 break; 960 case K_MTU: 961 case K_HOPCOUNT: 962 case K_EXPIRE: 963 case K_RECVPIPE: 964 case K_SENDPIPE: 965 case K_SSTHRESH: 966 case K_RTT: 967 case K_RTTVAR: 968 if (!--argc) 969 usage(1+*argv); 970 set_metric(*++argv, key); 971 break; 972 default: 973 usage(1+*argv); 974 } 975 } else { 976 if ((rtm_addrs & RTA_DST) == 0) { 977 dest = *argv; 978 ishost = getaddr(RTA_DST, *argv, &hp); 979 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 980 gateway = *argv; 981 (void)getaddr(RTA_GATEWAY, *argv, &hp); 982 } else { 983 ret = atoi(*argv); 984 985 if (ret == 0) { 986 if (strcmp(*argv, "0") == 0) { 987 if (!qflag) { 988 warnx("%s, %s", 989 "old usage of trailing 0", 990 "assuming route to if"); 991 } 992 } else 993 usage((char *)NULL); 994 iflag = 1; 995 continue; 996 } else if (ret > 0 && ret < 10) { 997 if (!qflag) { 998 warnx("%s, %s", 999 "old usage of trailing digit", 1000 "assuming route via gateway"); 1001 } 1002 iflag = 0; 1003 continue; 1004 } 1005 (void)getaddr(RTA_NETMASK, *argv, 0); 1006 } 1007 } 1008 } 1009 if (forcehost && forcenet) 1010 errx(1, "-host and -net conflict"); 1011 else if (forcehost) 1012 ishost = 1; 1013 else if (forcenet) 1014 ishost = 0; 1015 flags |= RTF_UP; 1016 if (ishost) 1017 flags |= RTF_HOST; 1018 if (iflag == 0) 1019 flags |= RTF_GATEWAY; 1020 for (attempts = 1; ; attempts++) { 1021 errno = 0; 1022 if ((ret = rtmsg(*cmd, flags)) == 0) 1023 break; 1024 if (errno != ENETUNREACH && errno != ESRCH) 1025 break; 1026 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 1027 hp->h_addr_list++; 1028 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 1029 hp->h_length); 1030 } else 1031 break; 1032 } 1033 if (*cmd == 'g') 1034 return (ret != 0); 1035 if (!qflag) { 1036 oerrno = errno; 1037 (void)printf("%s %s %s", cmd, ishost? "host" : "net", dest); 1038 if (*gateway) { 1039 (void)printf(": gateway %s", gateway); 1040 if (attempts > 1 && ret == 0 && af == AF_INET) 1041 (void)printf(" (%s)", 1042 inet_ntoa(so_gate.sin.sin_addr)); 1043 } 1044 if (ret == 0) 1045 (void)printf("\n"); 1046 else 1047 (void)printf(": %s\n", route_strerror(oerrno)); 1048 } 1049 return (ret != 0); 1050 } 1051 1052 static void 1053 inet_makenetandmask(u_int32_t net, struct sockaddr_in *isin) 1054 { 1055 u_int32_t addr, mask = 0; 1056 char *cp; 1057 1058 rtm_addrs |= RTA_NETMASK; 1059 if (net == 0) 1060 mask = addr = 0; 1061 else if (net < 128) { 1062 addr = net << IN_CLASSA_NSHIFT; 1063 mask = IN_CLASSA_NET; 1064 } else if (net < 192) { 1065 addr = net << IN_CLASSA_NSHIFT; 1066 mask = IN_CLASSB_NET; 1067 } else if (net < 224) { 1068 addr = net << IN_CLASSA_NSHIFT; 1069 mask = IN_CLASSC_NET; 1070 } else if (net < 256) { 1071 addr = net << IN_CLASSA_NSHIFT; 1072 mask = IN_CLASSD_NET; 1073 } else if (net < 49152) { /* 192 * 256 */ 1074 addr = net << IN_CLASSB_NSHIFT; 1075 mask = IN_CLASSB_NET; 1076 } else if (net < 57344) { /* 224 * 256 */ 1077 addr = net << IN_CLASSB_NSHIFT; 1078 mask = IN_CLASSC_NET; 1079 } else if (net < 65536) { 1080 addr = net << IN_CLASSB_NSHIFT; 1081 mask = IN_CLASSB_NET; 1082 } else if (net < 14680064L) { /* 224 * 65536 */ 1083 addr = net << IN_CLASSC_NSHIFT; 1084 mask = IN_CLASSC_NET; 1085 } else if (net < 16777216L) { 1086 addr = net << IN_CLASSC_NSHIFT; 1087 mask = IN_CLASSD_NET; 1088 } else { 1089 addr = net; 1090 if ((addr & IN_CLASSA_HOST) == 0) 1091 mask = IN_CLASSA_NET; 1092 else if ((addr & IN_CLASSB_HOST) == 0) 1093 mask = IN_CLASSB_NET; 1094 else if ((addr & IN_CLASSC_HOST) == 0) 1095 mask = IN_CLASSC_NET; 1096 else 1097 mask = -1; 1098 } 1099 isin->sin_addr.s_addr = htonl(addr); 1100 isin = &so_mask.sin; 1101 isin->sin_addr.s_addr = htonl(mask); 1102 isin->sin_len = 0; 1103 isin->sin_family = 0; 1104 cp = (char *)(&isin->sin_addr + 1); 1105 while (*--cp == 0 && cp > (char *)isin) 1106 ; 1107 isin->sin_len = 1 + cp - (char *)isin; 1108 isin->sin_family = AF_INET; 1109 } 1110 1111 #ifdef INET6 1112 /* 1113 * XXX the function may need more improvement... 1114 */ 1115 static int 1116 inet6_makenetandmask(struct sockaddr_in6 *sin6) 1117 { 1118 const char *plen; 1119 struct in6_addr in6; 1120 1121 plen = NULL; 1122 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 1123 sin6->sin6_scope_id == 0) { 1124 plen = "0"; 1125 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 1126 /* aggregatable global unicast - RFC2374 */ 1127 memset(&in6, 0, sizeof(in6)); 1128 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 1129 plen = "64"; 1130 } 1131 1132 if (!plen || strcmp(plen, "128") == 0) 1133 return 1; 1134 else { 1135 rtm_addrs |= RTA_NETMASK; 1136 (void)prefixlen(plen); 1137 return 0; 1138 } 1139 } 1140 #endif 1141 1142 /* 1143 * Interpret an argument as a network address of some kind, 1144 * returning 1 if a host address, 0 if a network address. 1145 */ 1146 static int 1147 getaddr(int which, char *s, struct hostent **hpp) 1148 { 1149 sup su; 1150 struct hostent *hp; 1151 struct netent *np; 1152 u_int32_t val; 1153 char *t; 1154 int afamily; /* local copy of af so we can change it */ 1155 1156 if (af == 0) { 1157 af = AF_INET; 1158 aflen = sizeof(struct sockaddr_in); 1159 } 1160 afamily = af; 1161 rtm_addrs |= which; 1162 switch (which) { 1163 case RTA_DST: 1164 su = &so_dst; 1165 break; 1166 case RTA_GATEWAY: 1167 su = &so_gate; 1168 break; 1169 case RTA_NETMASK: 1170 su = &so_mask; 1171 break; 1172 case RTA_GENMASK: 1173 su = &so_genmask; 1174 break; 1175 case RTA_IFP: 1176 su = &so_ifp; 1177 afamily = AF_LINK; 1178 break; 1179 case RTA_IFA: 1180 su = &so_ifa; 1181 su->sa.sa_family = af; 1182 break; 1183 default: 1184 su = NULL; 1185 usage("Internal Error"); 1186 /*NOTREACHED*/ 1187 } 1188 su->sa.sa_len = aflen; 1189 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1190 if (strcmp(s, "default") == 0) { 1191 switch (which) { 1192 case RTA_DST: 1193 forcenet++; 1194 (void)getaddr(RTA_NETMASK, s, 0); 1195 break; 1196 case RTA_NETMASK: 1197 case RTA_GENMASK: 1198 su->sa.sa_len = 0; 1199 } 1200 return (0); 1201 } 1202 switch (afamily) { 1203 #ifndef SMALL 1204 #ifdef INET6 1205 case AF_INET6: 1206 { 1207 struct addrinfo hints, *res; 1208 char *slash = 0; 1209 1210 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 1211 *slash = '\0'; 1212 memset(&hints, 0, sizeof(hints)); 1213 hints.ai_family = afamily; /*AF_INET6*/ 1214 hints.ai_flags = AI_NUMERICHOST; 1215 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1216 if (getaddrinfo(s, "0", &hints, &res) != 0) { 1217 hints.ai_flags = 0; 1218 if (slash) { 1219 *slash = '/'; 1220 slash = 0; 1221 } 1222 if (getaddrinfo(s, "0", &hints, &res) != 0) 1223 errx(1, "bad value: %s", s); 1224 } 1225 if (slash) 1226 *slash = '/'; 1227 if (sizeof(su->sin6) != res->ai_addrlen) 1228 errx(1, "%s: bad value", s); 1229 if (res->ai_next) 1230 errx(1, "address resolved to multiple values: %s", s); 1231 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1232 freeaddrinfo(res); 1233 #ifdef __KAME__ 1234 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1235 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1236 su->sin6.sin6_scope_id) { 1237 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1238 htons(su->sin6.sin6_scope_id); 1239 su->sin6.sin6_scope_id = 0; 1240 } 1241 #endif 1242 if (hints.ai_flags == AI_NUMERICHOST) { 1243 if (slash) 1244 return (prefixlen(slash + 1)); 1245 if (which == RTA_DST) 1246 return (inet6_makenetandmask(&su->sin6)); 1247 return (0); 1248 } else 1249 return (1); 1250 } 1251 #endif 1252 1253 case AF_NS: 1254 if (which == RTA_DST) { 1255 struct sockaddr_ns *sms = &(so_mask.sns); 1256 memset(sms, 0, sizeof(*sms)); 1257 sms->sns_family = 0; 1258 sms->sns_len = 6; 1259 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1260 rtm_addrs |= RTA_NETMASK; 1261 } 1262 su->sns.sns_addr = ns_addr(s); 1263 return (!ns_nullhost(su->sns.sns_addr)); 1264 1265 case AF_OSI: 1266 su->siso.siso_addr = *iso_addr(s); 1267 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1268 char *cp = (char *)TSEL(&su->siso); 1269 su->siso.siso_nlen = 0; 1270 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1271 su->siso.siso_len = 1 + cp - (char *)su; 1272 } 1273 return (1); 1274 1275 case AF_CCITT: 1276 ccitt_addr(s, &su->sx25); 1277 return (which == RTA_DST ? x25_makemask() : 1); 1278 #endif /* SMALL */ 1279 1280 case PF_ROUTE: 1281 su->sa.sa_len = sizeof(*su); 1282 sockaddr(s, &su->sa); 1283 return (1); 1284 1285 #ifndef SMALL 1286 case AF_APPLETALK: 1287 t = strchr (s, '.'); 1288 if (!t) { 1289 badataddr: 1290 errx(1, "bad address: %s", s); 1291 } 1292 val = atoi (s); 1293 if (val > 65535) 1294 goto badataddr; 1295 su->sat.sat_addr.s_net = val; 1296 val = atoi (t); 1297 if (val > 256) 1298 goto badataddr; 1299 su->sat.sat_addr.s_node = val; 1300 rtm_addrs |= RTA_NETMASK; 1301 return(forcehost || su->sat.sat_addr.s_node != 0); 1302 #endif 1303 1304 case AF_LINK: 1305 link_addr(s, &su->sdl); 1306 return (1); 1307 1308 case AF_INET: 1309 default: 1310 break; 1311 } 1312 1313 if (hpp == NULL) 1314 hpp = &hp; 1315 *hpp = NULL; 1316 1317 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 1318 *t = '\0'; 1319 if (forcenet == 0) { 1320 if ((val = inet_addr(s)) != INADDR_NONE) { 1321 inet_makenetandmask(htonl(val), &su->sin); 1322 return prefixlen(&t[1]); 1323 } 1324 } else { 1325 if ((val = inet_network(s)) != INADDR_NONE) { 1326 inet_makenetandmask(val, &su->sin); 1327 return prefixlen(&t[1]); 1328 } 1329 } 1330 *t = '/'; 1331 } 1332 if (inet_aton(s, &su->sin.sin_addr) && 1333 (which != RTA_DST || forcenet == 0)) { 1334 val = su->sin.sin_addr.s_addr; 1335 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1336 return (1); 1337 else { 1338 val = ntohl(val); 1339 goto netdone; 1340 } 1341 } 1342 if ((val = inet_network(s)) != INADDR_NONE || 1343 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1344 netdone: 1345 if (which == RTA_DST) 1346 inet_makenetandmask(val, &su->sin); 1347 return (0); 1348 } 1349 hp = gethostbyname(s); 1350 if (hp) { 1351 *hpp = hp; 1352 su->sin.sin_family = hp->h_addrtype; 1353 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1354 return (1); 1355 } 1356 errx(1, "bad value: %s", s); 1357 /*NOTREACHED*/ 1358 } 1359 1360 int 1361 prefixlen(const char *s) 1362 { 1363 int len = atoi(s), q, r; 1364 int max; 1365 1366 switch (af) { 1367 case AF_INET: 1368 max = sizeof(struct in_addr) * 8; 1369 break; 1370 #ifdef INET6 1371 case AF_INET6: 1372 max = sizeof(struct in6_addr) * 8; 1373 break; 1374 #endif 1375 default: 1376 errx(1, "prefixlen is not supported with af %d", af); 1377 } 1378 1379 rtm_addrs |= RTA_NETMASK; 1380 if (len < -1 || len > max) 1381 errx(1, "bad value: %s", s); 1382 1383 q = len >> 3; 1384 r = len & 7; 1385 switch (af) { 1386 case AF_INET: 1387 memset(&so_mask, 0, sizeof(so_mask)); 1388 so_mask.sin.sin_family = AF_INET; 1389 so_mask.sin.sin_len = sizeof(struct sockaddr_in); 1390 so_mask.sin.sin_addr.s_addr = htonl(0xffffffff << (32 - len)); 1391 break; 1392 #ifdef INET6 1393 case AF_INET6: 1394 so_mask.sin6.sin6_family = AF_INET6; 1395 so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1396 memset((void *)&so_mask.sin6.sin6_addr, 0, 1397 sizeof(so_mask.sin6.sin6_addr)); 1398 if (q > 0) 1399 memset((void *)&so_mask.sin6.sin6_addr, 0xff, q); 1400 if (r > 0) 1401 *((u_char *)&so_mask.sin6.sin6_addr + q) = 1402 (0xff00 >> r) & 0xff; 1403 break; 1404 #endif 1405 } 1406 return (len == max); 1407 } 1408 1409 #ifndef SMALL 1410 int 1411 x25_makemask(void) 1412 { 1413 char *cp; 1414 1415 if ((rtm_addrs & RTA_NETMASK) == 0) { 1416 rtm_addrs |= RTA_NETMASK; 1417 for (cp = (char *)&so_mask.sx25.x25_net; 1418 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1419 *cp = -1; 1420 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1421 } 1422 return 0; 1423 } 1424 1425 1426 const char * 1427 ns_print(struct sockaddr_ns *sns) 1428 { 1429 struct ns_addr work; 1430 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1431 u_short port; 1432 static char mybuf[50], cport[10], chost[25]; 1433 const char *host = ""; 1434 char *p; 1435 u_char *q; 1436 1437 work = sns->sns_addr; 1438 port = ntohs(work.x_port); 1439 work.x_port = 0; 1440 net.net_e = work.x_net; 1441 if (ns_nullhost(work) && net.int32_t_e == 0) { 1442 if (!port) 1443 return ("*.*"); 1444 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1445 return (mybuf); 1446 } 1447 1448 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1449 host = "any"; 1450 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1451 host = "*"; 1452 else { 1453 q = work.x_host.c_host; 1454 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1455 q[0], q[1], q[2], q[3], q[4], q[5]); 1456 for (p = chost; *p == '0' && p < chost + 12; p++) 1457 /* void */; 1458 host = p; 1459 } 1460 if (port) 1461 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1462 else 1463 *cport = 0; 1464 1465 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1466 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1467 return (mybuf); 1468 } 1469 1470 static void 1471 interfaces(void) 1472 { 1473 size_t needed; 1474 int mib[6]; 1475 char *buf, *lim, *next; 1476 struct rt_msghdr *rtm; 1477 1478 mib[0] = CTL_NET; 1479 mib[1] = PF_ROUTE; 1480 mib[2] = 0; /* protocol */ 1481 mib[3] = 0; /* wildcard address family */ 1482 mib[4] = NET_RT_IFLIST; 1483 mib[5] = 0; /* no flags */ 1484 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1485 err(1, "route-sysctl-estimate"); 1486 if ((buf = malloc(needed)) == NULL) 1487 err(1, "malloc"); 1488 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1489 err(1, "actual retrieval of interface table"); 1490 lim = buf + needed; 1491 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1492 rtm = (struct rt_msghdr *)next; 1493 print_rtmsg(rtm, rtm->rtm_msglen); 1494 } 1495 } 1496 1497 static void 1498 monitor(void) 1499 { 1500 int n; 1501 char msg[2048]; 1502 1503 verbose = 1; 1504 if (debugonly) { 1505 interfaces(); 1506 exit(0); 1507 } 1508 for(;;) { 1509 time_t now; 1510 n = read(sock, msg, 2048); 1511 now = time(NULL); 1512 (void)printf("got message of size %d on %s", n, ctime(&now)); 1513 print_rtmsg((struct rt_msghdr *)msg, n); 1514 } 1515 } 1516 1517 #endif /* SMALL */ 1518 1519 1520 struct { 1521 struct rt_msghdr m_rtm; 1522 char m_space[512]; 1523 } m_rtmsg; 1524 1525 static int 1526 rtmsg(int cmd, int flags) 1527 { 1528 static int seq; 1529 int rlen; 1530 char *cp = m_rtmsg.m_space; 1531 int l; 1532 1533 #define NEXTADDR(w, u) \ 1534 if (rtm_addrs & (w)) {\ 1535 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1536 if (verbose && ! shortoutput) sodump(&(u),#u);\ 1537 } 1538 1539 errno = 0; 1540 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1541 if (cmd == 'a') 1542 cmd = RTM_ADD; 1543 else if (cmd == 'c') 1544 cmd = RTM_CHANGE; 1545 else if (cmd == 'g') { 1546 #ifdef SMALL 1547 return (-1); 1548 #else /* SMALL */ 1549 cmd = RTM_GET; 1550 if (so_ifp.sa.sa_family == 0) { 1551 so_ifp.sa.sa_family = AF_LINK; 1552 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1553 rtm_addrs |= RTA_IFP; 1554 } 1555 #endif /* SMALL */ 1556 } else 1557 cmd = RTM_DELETE; 1558 #define rtm m_rtmsg.m_rtm 1559 rtm.rtm_type = cmd; 1560 rtm.rtm_flags = flags; 1561 rtm.rtm_version = RTM_VERSION; 1562 rtm.rtm_seq = ++seq; 1563 rtm.rtm_addrs = rtm_addrs; 1564 rtm.rtm_rmx = rt_metrics; 1565 rtm.rtm_inits = rtm_inits; 1566 1567 if (rtm_addrs & RTA_NETMASK) 1568 mask_addr(); 1569 NEXTADDR(RTA_DST, so_dst); 1570 NEXTADDR(RTA_GATEWAY, so_gate); 1571 NEXTADDR(RTA_NETMASK, so_mask); 1572 NEXTADDR(RTA_GENMASK, so_genmask); 1573 NEXTADDR(RTA_IFP, so_ifp); 1574 NEXTADDR(RTA_IFA, so_ifa); 1575 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1576 if (verbose && ! shortoutput) { 1577 if (rtm_addrs) 1578 putchar('\n'); 1579 print_rtmsg(&rtm, l); 1580 } 1581 if (debugonly) 1582 return (0); 1583 if ((rlen = write(sock, (char *)&m_rtmsg, l)) < 0) { 1584 warnx("writing to routing socket: %s", route_strerror(errno)); 1585 return (-1); 1586 } 1587 if (rlen < l) { 1588 warnx("write to routing socket, got %d for rlen", rlen); 1589 return 1; 1590 } 1591 #ifndef SMALL 1592 if (cmd == RTM_GET) { 1593 do { 1594 l = read(sock, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1595 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1596 if (l < 0) 1597 err(1, "read from routing socket"); 1598 else 1599 return print_getmsg(&rtm, l); 1600 } 1601 #endif /* SMALL */ 1602 #undef rtm 1603 return (0); 1604 } 1605 1606 static void 1607 mask_addr(void) 1608 { 1609 int olen = so_mask.sa.sa_len; 1610 char *cp1 = olen + (char *)&so_mask, *cp2; 1611 1612 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1613 if (*--cp1 != 0) { 1614 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1615 break; 1616 } 1617 if ((rtm_addrs & RTA_DST) == 0) 1618 return; 1619 switch (so_dst.sa.sa_family) { 1620 case AF_INET: 1621 #ifdef INET6 1622 case AF_INET6: 1623 #endif 1624 #ifndef SMALL 1625 case AF_APPLETALK: 1626 case AF_NS: 1627 case AF_CCITT: 1628 #endif /* SMALL */ 1629 case 0: 1630 return; 1631 #ifndef SMALL 1632 case AF_ISO: 1633 olen = MIN(so_dst.siso.siso_nlen, 1634 MAX(so_mask.sa.sa_len - 6, 0)); 1635 break; 1636 #endif /* SMALL */ 1637 } 1638 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1639 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1640 while (cp2 > cp1) 1641 *--cp2 = 0; 1642 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1643 while (cp1 > so_dst.sa.sa_data) 1644 *--cp1 &= *--cp2; 1645 #ifndef SMALL 1646 switch (so_dst.sa.sa_family) { 1647 case AF_ISO: 1648 so_dst.siso.siso_nlen = olen; 1649 break; 1650 } 1651 #endif /* SMALL */ 1652 } 1653 1654 const char *msgtypes[] = { 1655 "", 1656 "RTM_ADD: Add Route", 1657 "RTM_DELETE: Delete Route", 1658 "RTM_CHANGE: Change Metrics or flags", 1659 "RTM_GET: Report Metrics", 1660 "RTM_LOSING: Kernel Suspects Partitioning", 1661 "RTM_REDIRECT: Told to use different route", 1662 "RTM_MISS: Lookup failed on this address", 1663 "RTM_LOCK: fix specified metrics", 1664 "RTM_OLDADD: caused by SIOCADDRT", 1665 "RTM_OLDDEL: caused by SIOCDELRT", 1666 "RTM_RESOLVE: Route created by cloning", 1667 "RTM_NEWADDR: address being added to iface", 1668 "RTM_DELADDR: address being removed from iface", 1669 "RTM_OIFINFO: iface status change (pre-1.5)", 1670 "RTM_IFINFO: iface status change", 1671 "RTM_IFANNOUNCE: iface arrival/departure", 1672 "RTM_IEEE80211: IEEE80211 wireless event", 1673 0, 1674 }; 1675 1676 char metricnames[] = 1677 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1678 char routeflags[] = 1679 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1680 char ifnetflags[] = 1681 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1682 char addrnames[] = 1683 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1684 1685 1686 #ifndef SMALL 1687 static const char * 1688 linkstate(struct if_msghdr *ifm) 1689 { 1690 static char buf[64]; 1691 1692 switch (ifm->ifm_data.ifi_link_state) { 1693 case LINK_STATE_UNKNOWN: 1694 return "carrier: unknown"; 1695 case LINK_STATE_DOWN: 1696 return "carrier: no carrier"; 1697 case LINK_STATE_UP: 1698 return "carrier: active"; 1699 default: 1700 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1701 ifm->ifm_data.ifi_link_state); 1702 return buf; 1703 } 1704 } 1705 #endif /* SMALL */ 1706 1707 static void 1708 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1709 { 1710 struct if_msghdr *ifm; 1711 struct ifa_msghdr *ifam; 1712 struct if_announcemsghdr *ifan; 1713 union { 1714 struct ieee80211_join_event join; 1715 struct ieee80211_leave_event leave; 1716 struct ieee80211_replay_event replay; 1717 struct ieee80211_michael_event michael; 1718 } ev; 1719 size_t evlen = 0; 1720 1721 if (verbose == 0) 1722 return; 1723 if (rtm->rtm_version != RTM_VERSION) { 1724 (void)printf("routing message version %d not understood\n", 1725 rtm->rtm_version); 1726 return; 1727 } 1728 if (msgtypes[rtm->rtm_type]) 1729 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1730 else 1731 (void)printf("#%d: ", rtm->rtm_type); 1732 (void)printf("len %d, ", rtm->rtm_msglen); 1733 switch (rtm->rtm_type) { 1734 case RTM_IFINFO: 1735 ifm = (struct if_msghdr *)rtm; 1736 (void)printf("if# %d, %s, flags: ", ifm->ifm_index, 1737 #ifdef SMALL 1738 "" 1739 #else 1740 linkstate(ifm) 1741 #endif /* SMALL */ 1742 ); 1743 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1744 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1745 break; 1746 case RTM_NEWADDR: 1747 case RTM_DELADDR: 1748 ifam = (struct ifa_msghdr *)rtm; 1749 (void)printf("metric %d, flags: ", ifam->ifam_metric); 1750 bprintf(stdout, ifam->ifam_flags, routeflags); 1751 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1752 break; 1753 case RTM_IEEE80211: 1754 ifan = (struct if_announcemsghdr *)rtm; 1755 (void)printf("if# %d, what: ", ifan->ifan_index); 1756 switch (ifan->ifan_what) { 1757 case RTM_IEEE80211_ASSOC: 1758 printf("associate"); 1759 break; 1760 case RTM_IEEE80211_REASSOC: 1761 printf("re-associate"); 1762 break; 1763 case RTM_IEEE80211_DISASSOC: 1764 printf("disassociate"); 1765 break; 1766 case RTM_IEEE80211_SCAN: 1767 printf("scan complete"); 1768 break; 1769 case RTM_IEEE80211_JOIN: 1770 evlen = sizeof(ev.join); 1771 printf("join"); 1772 break; 1773 case RTM_IEEE80211_LEAVE: 1774 evlen = sizeof(ev.leave); 1775 printf("leave"); 1776 break; 1777 case RTM_IEEE80211_MICHAEL: 1778 evlen = sizeof(ev.michael); 1779 printf("michael"); 1780 break; 1781 case RTM_IEEE80211_REPLAY: 1782 evlen = sizeof(ev.replay); 1783 printf("replay"); 1784 break; 1785 default: 1786 evlen = 0; 1787 printf("#%d", ifan->ifan_what); 1788 break; 1789 } 1790 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1791 printf(" (truncated)\n"); 1792 break; 1793 } 1794 (void)memcpy(&ev, (ifan + 1), evlen); 1795 switch (ifan->ifan_what) { 1796 case RTM_IEEE80211_JOIN: 1797 case RTM_IEEE80211_LEAVE: 1798 printf(" mac %" PRIETHER, 1799 PRIETHER_ARGS(ev.join.iev_addr)); 1800 break; 1801 case RTM_IEEE80211_REPLAY: 1802 case RTM_IEEE80211_MICHAEL: 1803 printf(" src %" PRIETHER " dst %" PRIETHER 1804 " cipher %" PRIu8 " keyix %" PRIu8, 1805 PRIETHER_ARGS(ev.replay.iev_src), 1806 PRIETHER_ARGS(ev.replay.iev_dst), 1807 ev.replay.iev_cipher, 1808 ev.replay.iev_keyix); 1809 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1810 printf(" key rsc %#" PRIx64 1811 " frame rsc %#" PRIx64, 1812 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1813 } 1814 break; 1815 default: 1816 break; 1817 } 1818 printf("\n"); 1819 break; 1820 case RTM_IFANNOUNCE: 1821 ifan = (struct if_announcemsghdr *)rtm; 1822 (void)printf("if# %d, what: ", ifan->ifan_index); 1823 switch (ifan->ifan_what) { 1824 case IFAN_ARRIVAL: 1825 printf("arrival"); 1826 break; 1827 case IFAN_DEPARTURE: 1828 printf("departure"); 1829 break; 1830 default: 1831 printf("#%d", ifan->ifan_what); 1832 break; 1833 } 1834 printf("\n"); 1835 break; 1836 default: 1837 (void)printf("pid %d, seq %d, errno %d, flags: ", 1838 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1839 bprintf(stdout, rtm->rtm_flags, routeflags); 1840 pmsg_common(rtm); 1841 } 1842 } 1843 1844 #ifndef SMALL 1845 static int 1846 print_getmsg(struct rt_msghdr *rtm, int msglen) 1847 { 1848 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1849 struct sockaddr_dl *ifp = NULL; 1850 struct sockaddr *sa; 1851 char *cp; 1852 int i; 1853 1854 if (! shortoutput) 1855 (void)printf(" route to: %s\n", 1856 routename((struct sockaddr *) &so_dst, NULL, RTF_HOST)); 1857 if (rtm->rtm_version != RTM_VERSION) { 1858 warnx("routing message version %d not understood", 1859 rtm->rtm_version); 1860 return 1; 1861 } 1862 if (rtm->rtm_msglen > msglen) { 1863 warnx("message length mismatch, in packet %d, returned %d", 1864 rtm->rtm_msglen, msglen); 1865 } 1866 if (rtm->rtm_errno) { 1867 warnx("RTM_GET: %s (errno %d)", 1868 strerror(rtm->rtm_errno), rtm->rtm_errno); 1869 return 1; 1870 } 1871 cp = ((char *)(rtm + 1)); 1872 if (rtm->rtm_addrs) 1873 for (i = 1; i; i <<= 1) 1874 if (i & rtm->rtm_addrs) { 1875 sa = (struct sockaddr *)cp; 1876 switch (i) { 1877 case RTA_DST: 1878 dst = sa; 1879 break; 1880 case RTA_GATEWAY: 1881 gate = sa; 1882 break; 1883 case RTA_NETMASK: 1884 mask = sa; 1885 break; 1886 case RTA_IFP: 1887 if (sa->sa_family == AF_LINK && 1888 ((struct sockaddr_dl *)sa)->sdl_nlen) 1889 ifp = (struct sockaddr_dl *)sa; 1890 break; 1891 case RTA_IFA: 1892 ifa = sa; 1893 break; 1894 } 1895 ADVANCE(cp, sa); 1896 } 1897 if (dst && mask) 1898 mask->sa_family = dst->sa_family; /* XXX */ 1899 if (dst && ! shortoutput) 1900 (void)printf("destination: %s\n", 1901 routename(dst, mask, RTF_HOST)); 1902 if (mask && ! shortoutput) { 1903 int savenflag = nflag; 1904 1905 nflag = 1; 1906 (void)printf(" mask: %s\n", 1907 routename(mask, NULL, RTF_HOST)); 1908 nflag = savenflag; 1909 } 1910 if (gate && rtm->rtm_flags & RTF_GATEWAY) { 1911 const char *name; 1912 1913 name = routename(gate, NULL, RTF_HOST); 1914 if (shortoutput) { 1915 if (*name == '\0') 1916 return (1); 1917 (void)printf("%s\n", name); 1918 } else 1919 (void)printf(" gateway: %s\n", name); 1920 } 1921 if (ifa && ! shortoutput) 1922 (void)printf(" local addr: %s\n", 1923 routename(ifa, NULL, RTF_HOST)); 1924 if (ifp && ! shortoutput) 1925 (void)printf(" interface: %.*s\n", 1926 ifp->sdl_nlen, ifp->sdl_data); 1927 if (! shortoutput) { 1928 (void)printf(" flags: "); 1929 bprintf(stdout, rtm->rtm_flags, routeflags); 1930 } 1931 1932 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1933 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1934 1935 if (! shortoutput) { 1936 (void)printf("\n%s\n", "\ 1937 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1938 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1939 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1940 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1941 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1942 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1943 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1944 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1945 if (rtm->rtm_rmx.rmx_expire) 1946 rtm->rtm_rmx.rmx_expire -= time(0); 1947 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1948 } 1949 #undef lock 1950 #undef msec 1951 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1952 1953 if (shortoutput) 1954 return ((rtm->rtm_addrs & RTF_GATEWAY) == 0); 1955 else if (verbose) 1956 pmsg_common(rtm); 1957 else if (rtm->rtm_addrs &~ RTA_IGN) { 1958 (void)printf("sockaddrs: "); 1959 bprintf(stdout, rtm->rtm_addrs, addrnames); 1960 putchar('\n'); 1961 } 1962 return 0; 1963 #undef RTA_IGN 1964 } 1965 #endif /* SMALL */ 1966 1967 void 1968 pmsg_common(struct rt_msghdr *rtm) 1969 { 1970 (void)printf("\nlocks: "); 1971 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1972 (void)printf(" inits: "); 1973 bprintf(stdout, rtm->rtm_inits, metricnames); 1974 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1975 } 1976 1977 static void 1978 pmsg_addrs(char *cp, int addrs) 1979 { 1980 struct sockaddr *sa[RTAX_MAX]; 1981 int i, nmf; 1982 1983 if (addrs != 0) { 1984 (void)printf("\nsockaddrs: "); 1985 bprintf(stdout, addrs, addrnames); 1986 (void)putchar('\n'); 1987 nmf = -1; 1988 for (i = 0; i < RTAX_MAX; i++) { 1989 if ((1 << i) & addrs) { 1990 sa[i] = (struct sockaddr *)cp; 1991 if ((i == RTAX_DST || i == RTAX_IFA) && 1992 nmf == -1) 1993 nmf = sa[i]->sa_family; 1994 ADVANCE(cp, sa[i]); 1995 } else 1996 sa[i] = NULL; 1997 } 1998 for (i = 0; i < RTAX_MAX; i++) { 1999 if (sa[i] != NULL) { 2000 if (i == RTAX_NETMASK && sa[i]->sa_len) 2001 (void)printf(" %s", 2002 netmask_string(sa[i], -1, nmf)); 2003 else 2004 (void)printf(" %s", 2005 routename(sa[i], NULL, RTF_HOST)); 2006 } 2007 } 2008 } 2009 (void)putchar('\n'); 2010 (void)fflush(stdout); 2011 } 2012 2013 static void 2014 bprintf(FILE *fp, int b, u_char *s) 2015 { 2016 int i; 2017 int gotsome = 0; 2018 2019 if (b == 0) 2020 return; 2021 while ((i = *s++) != 0) { 2022 if (b & (1 << (i-1))) { 2023 if (gotsome == 0) 2024 i = '<'; 2025 else 2026 i = ','; 2027 (void)putc(i, fp); 2028 gotsome = 1; 2029 for (; (i = *s) > 32; s++) 2030 (void)putc(i, fp); 2031 } else 2032 while (*s > 32) 2033 s++; 2034 } 2035 if (gotsome) 2036 (void)putc('>', fp); 2037 } 2038 2039 int 2040 keyword(char *cp) 2041 { 2042 struct keytab *kt = keywords; 2043 2044 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 2045 kt++; 2046 return kt->kt_i; 2047 } 2048 2049 static void 2050 sodump(sup su, const char *which) 2051 { 2052 #ifdef INET6 2053 char ntop_buf[NI_MAXHOST]; 2054 #endif 2055 2056 switch (su->sa.sa_family) { 2057 case AF_INET: 2058 (void)printf("%s: inet %s; ", 2059 which, inet_ntoa(su->sin.sin_addr)); 2060 break; 2061 #ifndef SMALL 2062 case AF_APPLETALK: 2063 (void)printf("%s: atalk %d.%d; ", 2064 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 2065 break; 2066 #endif 2067 case AF_LINK: 2068 (void)printf("%s: link %s; ", 2069 which, link_ntoa(&su->sdl)); 2070 break; 2071 #ifndef SMALL 2072 #ifdef INET6 2073 case AF_INET6: 2074 (void)printf("%s: inet6 %s; ", 2075 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 2076 ntop_buf, sizeof(ntop_buf))); 2077 break; 2078 #endif 2079 case AF_ISO: 2080 (void)printf("%s: iso %s; ", 2081 which, iso_ntoa(&su->siso.siso_addr)); 2082 break; 2083 case AF_NS: 2084 (void)printf("%s: xns %s; ", 2085 which, ns_ntoa(su->sns.sns_addr)); 2086 break; 2087 #endif /* SMALL */ 2088 default: 2089 (void)printf("%s: (%d) %s; ", 2090 which, su->sa.sa_family, any_ntoa(&su->sa)); 2091 } 2092 (void)fflush(stdout); 2093 } 2094 2095 /* States*/ 2096 #define VIRGIN 0 2097 #define GOTONE 1 2098 #define GOTTWO 2 2099 /* Inputs */ 2100 #define DIGIT (4*0) 2101 #define END (4*1) 2102 #define DELIM (4*2) 2103 2104 static void 2105 sockaddr(char *addr, struct sockaddr *sa) 2106 { 2107 char *cp = (char *)sa; 2108 int size = sa->sa_len; 2109 char *cplim = cp + size; 2110 int byte = 0, state = VIRGIN, new = 0; 2111 2112 (void)memset(cp, 0, size); 2113 cp++; 2114 do { 2115 if ((*addr >= '0') && (*addr <= '9')) { 2116 new = *addr - '0'; 2117 } else if ((*addr >= 'a') && (*addr <= 'f')) { 2118 new = *addr - 'a' + 10; 2119 } else if ((*addr >= 'A') && (*addr <= 'F')) { 2120 new = *addr - 'A' + 10; 2121 } else if (*addr == 0) 2122 state |= END; 2123 else 2124 state |= DELIM; 2125 addr++; 2126 switch (state /* | INPUT */) { 2127 case GOTTWO | DIGIT: 2128 *cp++ = byte; /*FALLTHROUGH*/ 2129 case VIRGIN | DIGIT: 2130 state = GOTONE; byte = new; continue; 2131 case GOTONE | DIGIT: 2132 state = GOTTWO; byte = new + (byte << 4); continue; 2133 default: /* | DELIM */ 2134 state = VIRGIN; *cp++ = byte; byte = 0; continue; 2135 case GOTONE | END: 2136 case GOTTWO | END: 2137 *cp++ = byte; /* FALLTHROUGH */ 2138 case VIRGIN | END: 2139 break; 2140 } 2141 break; 2142 } while (cp < cplim); 2143 sa->sa_len = cp - (char *)sa; 2144 } 2145
Indexes created Mon Sep 29 21:09:56 GMT 2025