route.c revision 1.93
1 /* $NetBSD: route.c,v 1.93 2005/08/31 02:58:30 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 1.93 2005/08/31 02:58:30 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 static int prefixlen(const char *); 91 #ifndef SMALL 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 buf = lim = NULL; 300 if (needed) { 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 } 307 if (verbose) { 308 (void)printf("Examining routing table from sysctl\n"); 309 if (af) 310 printf("(address family %s)\n", (*argv + 1)); 311 } 312 if (needed == 0) 313 return 0; 314 seqno = 0; /* ??? */ 315 for (next = buf; next < lim; next += rtm->rtm_msglen) { 316 rtm = (struct rt_msghdr *)next; 317 if (verbose) 318 print_rtmsg(rtm, rtm->rtm_msglen); 319 if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC | 320 RTF_LLINFO)) && !doall) 321 continue; 322 if (af) { 323 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 324 325 if (sa->sa_family != af) 326 continue; 327 } 328 if (debugonly) 329 continue; 330 rtm->rtm_type = RTM_DELETE; 331 rtm->rtm_seq = seqno; 332 if ((rlen = write(sock, next, rtm->rtm_msglen)) < 0) { 333 warnx("writing to routing socket: %s", 334 route_strerror(errno)); 335 return 1; 336 } 337 if (rlen < (int)rtm->rtm_msglen) { 338 warnx("write to routing socket, got %d for rlen", rlen); 339 return 1; 340 } 341 seqno++; 342 if (qflag) 343 continue; 344 if (verbose) 345 print_rtmsg(rtm, rlen); 346 else { 347 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 348 (void)printf("%-20.20s ", 349 routename(sa, NULL, rtm->rtm_flags)); 350 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 351 (void)printf("%-20.20s ", 352 routename(sa, NULL, RTF_HOST)); 353 (void)printf("done\n"); 354 } 355 } 356 free(buf); 357 return 0; 358 } 359 360 361 static char hexlist[] = "0123456789abcdef"; 362 363 static char * 364 any_ntoa(const struct sockaddr *sa) 365 { 366 static char obuf[3 * 256]; 367 const char *in; 368 char *out; 369 int len; 370 371 #if __GNUC__ > 2 372 len = sa->sa_len - offsetof(struct sockaddr, sa_data); 373 #else 374 len = sa->sa_len - ((struct sockaddr*)&sa->sa_data - sa); 375 #endif 376 in = sa->sa_data; 377 out = obuf; 378 379 do { 380 *out++ = hexlist[(*in >> 4) & 15]; 381 *out++ = hexlist[(*in++) & 15]; 382 *out++ = '.'; 383 } while (--len > 0); 384 out[-1] = '\0'; 385 return obuf; 386 } 387 388 int 389 netmask_length(struct sockaddr *nm, int family) 390 { 391 static int 392 /* number of bits in a nibble */ 393 _t[] = { 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4 }, 394 /* good nibbles are 1111, 1110, 1100, 1000, 0000 */ 395 _g[] = { 1,0,0,0,0,0,0,0,1,0,0,0,1,0,1,1 }; 396 int mask, good, zeroes, maskbytes, bit, i; 397 unsigned char *maskdata; 398 399 if (nm == NULL) 400 return 0; 401 402 mask = 0; 403 good = 1; 404 zeroes = 0; 405 406 switch (family) { 407 case AF_INET: { 408 struct sockaddr_in *nsin = (struct sockaddr_in *)nm; 409 maskdata = (unsigned char *)&nsin->sin_addr; 410 maskbytes = nsin->sin_len - 411 ((caddr_t)&nsin->sin_addr - (caddr_t)nsin); 412 break; 413 } 414 case AF_INET6: { 415 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nm; 416 maskdata = (unsigned char *)&sin6->sin6_addr; 417 maskbytes = sin6->sin6_len - 418 ((caddr_t)&sin6->sin6_addr - (caddr_t)sin6); 419 break; 420 } 421 default: 422 return 0; 423 } 424 425 /* 426 * Count the bits in the nibbles of the mask, and marking the 427 * netmask as not good (or at best, non-standard and very 428 * discouraged, in the case of AF_INET) if we find either of 429 * a nibble with non-contiguous bits, or a non-zero nibble 430 * after we've found a zero nibble. 431 */ 432 for (i = 0; i < maskbytes; i++) { 433 /* high nibble */ 434 mask += bit = _t[maskdata[i] >> 4]; 435 good &= _g[maskdata[i] >> 4]; 436 if (zeroes && bit) 437 good = 0; 438 if (bit == 0) 439 zeroes = 1; 440 /* low nibble */ 441 mask += bit = _t[maskdata[i] & 0xf]; 442 good &= _g[maskdata[i] & 0xf]; 443 if (zeroes && bit) 444 good = 0; 445 if (bit == 0) 446 zeroes = 1; 447 } 448 449 /* 450 * Always return the number of bits found, but as a negative 451 * if the mask wasn't one we like. 452 */ 453 return good ? mask : -mask; 454 } 455 456 char * 457 netmask_string(struct sockaddr *mask, int len, int family) 458 { 459 static char smask[INET6_ADDRSTRLEN]; 460 struct sockaddr_in nsin; 461 struct sockaddr_in6 nsin6; 462 463 if (len >= 0) 464 snprintf(smask, sizeof(smask), "%d", len); 465 else { 466 switch (family) { 467 case AF_INET: 468 memset(&nsin, 0, sizeof(nsin)); 469 memcpy(&nsin, mask, mask->sa_len); 470 snprintf(smask, sizeof(smask), "%s", 471 inet_ntoa(nsin.sin_addr)); 472 break; 473 case AF_INET6: 474 memset(&nsin6, 0, sizeof(nsin6)); 475 memcpy(&nsin6, mask, mask->sa_len); 476 inet_ntop(family, &nsin6.sin6_addr, smask, 477 sizeof(smask)); 478 break; 479 default: 480 snprintf(smask, sizeof(smask), "%s", any_ntoa(mask)); 481 } 482 } 483 484 return smask; 485 } 486 487 const char * 488 routename(struct sockaddr *sa, struct sockaddr *nm, int flags) 489 { 490 const char *cp; 491 static char line[50]; 492 struct hostent *hp; 493 static char domain[MAXHOSTNAMELEN + 1]; 494 static int first = 1; 495 struct in_addr in; 496 int nml; 497 498 if ((flags & RTF_HOST) == 0) 499 return netname(sa, nm); 500 501 if (first) { 502 first = 0; 503 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 504 (cp = strchr(domain, '.'))) 505 (void)strlcpy(domain, cp + 1, sizeof(domain)); 506 else 507 domain[0] = 0; 508 } 509 510 if (sa->sa_len == 0) 511 strlcpy(line, "default", sizeof(line)); 512 else switch (sa->sa_family) { 513 514 case AF_INET: 515 in = ((struct sockaddr_in *)sa)->sin_addr; 516 nml = netmask_length(nm, AF_INET); 517 518 cp = 0; 519 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) { 520 if (nml == 0) 521 cp = "default"; 522 else { 523 static char notdefault[sizeof(NOTDEFSTRING)]; 524 525 snprintf(notdefault, sizeof(notdefault), 526 "0.0.0.0/%s", 527 netmask_string(nm, nml, AF_INET)); 528 cp = notdefault; 529 } 530 } 531 if (cp == 0 && !nflag) { 532 hp = gethostbyaddr((char *)&in, sizeof(struct in_addr), 533 AF_INET); 534 if (hp) { 535 char *ccp; 536 if ((ccp = strchr(hp->h_name, '.')) && 537 !strcmp(ccp + 1, domain)) 538 *ccp = '\0'; 539 cp = hp->h_name; 540 } 541 } 542 if (cp) 543 (void)strlcpy(line, cp, sizeof(line)); 544 else 545 (void)strlcpy(line, inet_ntoa(in), sizeof(line)); 546 break; 547 548 case AF_LINK: 549 return (link_ntoa((struct sockaddr_dl *)sa)); 550 551 #ifdef INET6 552 case AF_INET6: 553 { 554 struct sockaddr_in6 sin6; 555 int niflags; 556 char nihost[NI_MAXHOST]; 557 558 niflags = 0; 559 if (nflag) 560 niflags |= NI_NUMERICHOST; 561 memset(&sin6, 0, sizeof(sin6)); 562 memcpy(&sin6, sa, sa->sa_len); 563 sin6.sin6_len = sizeof(struct sockaddr_in6); 564 sin6.sin6_family = AF_INET6; 565 #ifdef __KAME__ 566 if (sa->sa_len == sizeof(struct sockaddr_in6) && 567 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 568 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 569 sin6.sin6_scope_id == 0) { 570 sin6.sin6_scope_id = 571 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 572 sin6.sin6_addr.s6_addr[2] = 0; 573 sin6.sin6_addr.s6_addr[3] = 0; 574 } 575 #endif 576 nml = netmask_length(nm, AF_INET6); 577 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 578 if (nml == 0) 579 strlcpy(line, "::", sizeof(line)); 580 else 581 /* noncontiguous never happens in ipv6 */ 582 snprintf(line, sizeof(line), "::/%d", nml); 583 } 584 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 585 nihost, sizeof(nihost), NULL, 0, niflags) != 0) 586 strlcpy(line, "invalid", sizeof(line)); 587 else { 588 char *ccp; 589 if (!nflag && (ccp = strchr(nihost, '.')) && 590 strcmp(ccp + 1, domain) == 0) 591 *ccp = '\0'; 592 strlcpy(line, nihost, sizeof(line)); 593 } 594 break; 595 } 596 #endif 597 598 #ifndef SMALL 599 case AF_NS: 600 return (ns_print((struct sockaddr_ns *)sa)); 601 602 case AF_ISO: 603 (void)snprintf(line, sizeof line, "iso %s", 604 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 605 break; 606 607 case AF_APPLETALK: 608 (void)snprintf(line, sizeof(line), "atalk %d.%d", 609 ((struct sockaddr_at *)sa)->sat_addr.s_net, 610 ((struct sockaddr_at *)sa)->sat_addr.s_node); 611 break; 612 #endif /* SMALL */ 613 614 default: 615 (void)snprintf(line, sizeof line, "(%d) %s", 616 sa->sa_family, any_ntoa(sa)); 617 break; 618 619 } 620 return (line); 621 } 622 623 /* 624 * Return the name of the network whose address is given. 625 * The address is assumed to be that of a net or subnet, not a host. 626 */ 627 const char * 628 netname(struct sockaddr *sa, struct sockaddr *nm) 629 { 630 const char *cp = 0; 631 static char line[50]; 632 struct netent *np = 0; 633 u_int32_t net, mask; 634 u_int32_t i; 635 int subnetshift, nml; 636 struct in_addr in; 637 638 switch (sa->sa_family) { 639 640 case AF_INET: 641 in = ((struct sockaddr_in *)sa)->sin_addr; 642 i = ntohl(in.s_addr); 643 nml = netmask_length(nm, AF_INET); 644 if (i == 0) { 645 if (nml == 0) 646 cp = "default"; 647 else { 648 static char notdefault[sizeof(NOTDEFSTRING)]; 649 650 snprintf(notdefault, sizeof(notdefault), 651 "0.0.0.0/%s", 652 netmask_string(nm, nml, AF_INET)); 653 cp = notdefault; 654 } 655 } 656 else if (!nflag) { 657 if (IN_CLASSA(i)) { 658 mask = IN_CLASSA_NET; 659 subnetshift = 8; 660 } else if (IN_CLASSB(i)) { 661 mask = IN_CLASSB_NET; 662 subnetshift = 8; 663 } else { 664 mask = IN_CLASSC_NET; 665 subnetshift = 4; 666 } 667 /* 668 * If there are more bits than the standard mask 669 * would suggest, subnets must be in use. 670 * Guess at the subnet mask, assuming reasonable 671 * width subnet fields. 672 */ 673 while (i &~ mask) 674 mask = (int32_t)mask >> subnetshift; 675 net = i & mask; 676 while ((mask & 1) == 0) 677 mask >>= 1, net >>= 1; 678 np = getnetbyaddr(net, AF_INET); 679 if (np) 680 cp = np->n_name; 681 } 682 if (cp) 683 (void)strlcpy(line, cp, sizeof(line)); 684 else { 685 #if 0 /* XXX - This is silly... */ 686 #define C(x) ((x) & 0xff) 687 if ((i & 0xffffff) == 0) 688 (void)snprintf(line, sizeof line, "%u", 689 C(i >> 24)); 690 else if ((i & 0xffff) == 0) 691 (void)snprintf(line, sizeof line, "%u.%u", 692 C(i >> 24), C(i >> 16)); 693 else if ((i & 0xff) == 0) 694 (void)snprintf(line, sizeof line, "%u.%u.%u", 695 C(i >> 24), C(i >> 16), C(i >> 8)); 696 else 697 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 698 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 699 #undef C 700 #else /* XXX */ 701 if (nml == 0) 702 strlcpy(line, inet_ntoa(in), sizeof(line)); 703 else 704 snprintf(line, sizeof(line), "%s/%d", inet_ntoa(in), nml); 705 #endif /* XXX */ 706 } 707 break; 708 709 case AF_LINK: 710 return (link_ntoa((struct sockaddr_dl *)sa)); 711 712 #ifdef INET6 713 case AF_INET6: 714 { 715 struct sockaddr_in6 sin6; 716 int niflags; 717 718 niflags = 0; 719 if (nflag) 720 niflags |= NI_NUMERICHOST; 721 memset(&sin6, 0, sizeof(sin6)); 722 memcpy(&sin6, sa, sa->sa_len); 723 sin6.sin6_len = sizeof(struct sockaddr_in6); 724 sin6.sin6_family = AF_INET6; 725 #ifdef __KAME__ 726 if (sa->sa_len == sizeof(struct sockaddr_in6) && 727 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 728 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 729 sin6.sin6_scope_id == 0) { 730 sin6.sin6_scope_id = 731 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 732 sin6.sin6_addr.s6_addr[2] = 0; 733 sin6.sin6_addr.s6_addr[3] = 0; 734 } 735 #endif 736 nml = netmask_length(nm, AF_INET6); 737 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 738 if (nml == 0) 739 strlcpy(line, "::", sizeof(line)); 740 else 741 /* noncontiguous never happens in ipv6 */ 742 snprintf(line, sizeof(line), "::/%d", nml); 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 #ifndef SMALL 752 case AF_NS: 753 return (ns_print((struct sockaddr_ns *)sa)); 754 755 case AF_ISO: 756 (void)snprintf(line, sizeof line, "iso %s", 757 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 758 break; 759 760 case AF_APPLETALK: 761 (void)snprintf(line, sizeof(line), "atalk %d.%d", 762 ((struct sockaddr_at *)sa)->sat_addr.s_net, 763 ((struct sockaddr_at *)sa)->sat_addr.s_node); 764 break; 765 #endif /* SMALL */ 766 767 default: 768 (void)snprintf(line, sizeof line, "af %d: %s", 769 sa->sa_family, any_ntoa(sa)); 770 break; 771 } 772 return (line); 773 } 774 775 static const char * 776 route_strerror(int error) 777 { 778 779 switch (error) { 780 case ESRCH: 781 return "not in table"; 782 case EBUSY: 783 return "entry in use"; 784 case ENOBUFS: 785 return "routing table overflow"; 786 default: 787 return strerror(error); 788 } 789 } 790 791 static void 792 set_metric(char *value, int key) 793 { 794 int flag = 0; 795 u_long noval, *valp = &noval; 796 797 switch (key) { 798 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 799 caseof(K_MTU, RTV_MTU, rmx_mtu); 800 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 801 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 802 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 803 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 804 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 805 caseof(K_RTT, RTV_RTT, rmx_rtt); 806 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 807 } 808 rtm_inits |= flag; 809 if (lockrest || locking) 810 rt_metrics.rmx_locks |= flag; 811 if (locking) 812 locking = 0; 813 *valp = atoi(value); 814 } 815 816 static int 817 newroute(int argc, char **argv) 818 { 819 const char *cmd, *dest = "", *gateway = ""; 820 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 821 int key; 822 struct hostent *hp = 0; 823 824 cmd = argv[0]; 825 af = 0; 826 if (*cmd != 'g') 827 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 828 while (--argc > 0) { 829 if (**(++argv)== '-') { 830 switch (key = keyword(1 + *argv)) { 831 832 case K_SA: 833 af = PF_ROUTE; 834 aflen = sizeof(union sockunion); 835 break; 836 837 #ifndef SMALL 838 case K_ATALK: 839 af = AF_APPLETALK; 840 aflen = sizeof(struct sockaddr_at); 841 break; 842 #endif 843 844 case K_INET: 845 af = AF_INET; 846 aflen = sizeof(struct sockaddr_in); 847 break; 848 849 #ifdef INET6 850 case K_INET6: 851 af = AF_INET6; 852 aflen = sizeof(struct sockaddr_in6); 853 break; 854 #endif 855 856 case K_LINK: 857 af = AF_LINK; 858 aflen = sizeof(struct sockaddr_dl); 859 break; 860 861 #ifndef SMALL 862 case K_OSI: 863 case K_ISO: 864 af = AF_ISO; 865 aflen = sizeof(struct sockaddr_iso); 866 break; 867 868 case K_X25: 869 af = AF_CCITT; 870 aflen = sizeof(struct sockaddr_x25); 871 break; 872 873 case K_XNS: 874 af = AF_NS; 875 aflen = sizeof(struct sockaddr_ns); 876 break; 877 #endif /* SMALL */ 878 879 case K_IFACE: 880 case K_INTERFACE: 881 iflag++; 882 break; 883 case K_NOSTATIC: 884 flags &= ~RTF_STATIC; 885 break; 886 case K_LLINFO: 887 flags |= RTF_LLINFO; 888 break; 889 case K_LOCK: 890 locking = 1; 891 break; 892 case K_LOCKREST: 893 lockrest = 1; 894 break; 895 case K_HOST: 896 forcehost++; 897 break; 898 case K_REJECT: 899 flags |= RTF_REJECT; 900 break; 901 case K_BLACKHOLE: 902 flags |= RTF_BLACKHOLE; 903 break; 904 case K_CLONED: 905 flags |= RTF_CLONED; 906 break; 907 case K_PROTO1: 908 flags |= RTF_PROTO1; 909 break; 910 case K_PROTO2: 911 flags |= RTF_PROTO2; 912 break; 913 case K_CLONING: 914 flags |= RTF_CLONING; 915 break; 916 case K_XRESOLVE: 917 flags |= RTF_XRESOLVE; 918 break; 919 case K_STATIC: 920 flags |= RTF_STATIC; 921 break; 922 case K_IFA: 923 if (!--argc) 924 usage(1+*argv); 925 (void)getaddr(RTA_IFA, *++argv, 0); 926 break; 927 case K_IFP: 928 if (!--argc) 929 usage(1+*argv); 930 (void)getaddr(RTA_IFP, *++argv, 0); 931 break; 932 case K_GENMASK: 933 if (!--argc) 934 usage(1+*argv); 935 (void)getaddr(RTA_GENMASK, *++argv, 0); 936 break; 937 case K_GATEWAY: 938 if (!--argc) 939 usage(1+*argv); 940 (void)getaddr(RTA_GATEWAY, *++argv, 0); 941 break; 942 case K_DST: 943 if (!--argc) 944 usage(1+*argv); 945 ishost = getaddr(RTA_DST, *++argv, &hp); 946 dest = *argv; 947 break; 948 case K_NETMASK: 949 if (!--argc) 950 usage(1+*argv); 951 (void)getaddr(RTA_NETMASK, *++argv, 0); 952 /* FALLTHROUGH */ 953 case K_NET: 954 forcenet++; 955 break; 956 case K_PREFIXLEN: 957 if (!--argc) 958 usage(1+*argv); 959 ishost = prefixlen(*++argv); 960 break; 961 case K_MTU: 962 case K_HOPCOUNT: 963 case K_EXPIRE: 964 case K_RECVPIPE: 965 case K_SENDPIPE: 966 case K_SSTHRESH: 967 case K_RTT: 968 case K_RTTVAR: 969 if (!--argc) 970 usage(1+*argv); 971 set_metric(*++argv, key); 972 break; 973 default: 974 usage(1+*argv); 975 } 976 } else { 977 if ((rtm_addrs & RTA_DST) == 0) { 978 dest = *argv; 979 ishost = getaddr(RTA_DST, *argv, &hp); 980 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 981 gateway = *argv; 982 (void)getaddr(RTA_GATEWAY, *argv, &hp); 983 } else { 984 ret = atoi(*argv); 985 986 if (ret == 0) { 987 if (strcmp(*argv, "0") == 0) { 988 if (!qflag) { 989 warnx("%s, %s", 990 "old usage of trailing 0", 991 "assuming route to if"); 992 } 993 } else 994 usage(NULL); 995 iflag = 1; 996 continue; 997 } else if (ret > 0 && ret < 10) { 998 if (!qflag) { 999 warnx("%s, %s", 1000 "old usage of trailing digit", 1001 "assuming route via gateway"); 1002 } 1003 iflag = 0; 1004 continue; 1005 } 1006 (void)getaddr(RTA_NETMASK, *argv, 0); 1007 } 1008 } 1009 } 1010 if (forcehost && forcenet) 1011 errx(1, "-host and -net conflict"); 1012 else if (forcehost) 1013 ishost = 1; 1014 else if (forcenet) 1015 ishost = 0; 1016 flags |= RTF_UP; 1017 if (ishost) 1018 flags |= RTF_HOST; 1019 if (iflag == 0) 1020 flags |= RTF_GATEWAY; 1021 for (attempts = 1; ; attempts++) { 1022 errno = 0; 1023 if ((ret = rtmsg(*cmd, flags)) == 0) 1024 break; 1025 if (errno != ENETUNREACH && errno != ESRCH) 1026 break; 1027 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 1028 hp->h_addr_list++; 1029 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 1030 hp->h_length); 1031 } else 1032 break; 1033 } 1034 if (*cmd == 'g') 1035 return (ret != 0); 1036 if (!qflag) { 1037 oerrno = errno; 1038 (void)printf("%s %s %s", cmd, ishost? "host" : "net", dest); 1039 if (*gateway) { 1040 (void)printf(": gateway %s", gateway); 1041 if (attempts > 1 && ret == 0 && af == AF_INET) 1042 (void)printf(" (%s)", 1043 inet_ntoa(so_gate.sin.sin_addr)); 1044 } 1045 if (ret == 0) 1046 (void)printf("\n"); 1047 else 1048 (void)printf(": %s\n", route_strerror(oerrno)); 1049 } 1050 return (ret != 0); 1051 } 1052 1053 static void 1054 inet_makenetandmask(u_int32_t net, struct sockaddr_in *isin) 1055 { 1056 u_int32_t addr, mask = 0; 1057 char *cp; 1058 1059 rtm_addrs |= RTA_NETMASK; 1060 if (net == 0) 1061 mask = addr = 0; 1062 else if (net < 128) { 1063 addr = net << IN_CLASSA_NSHIFT; 1064 mask = IN_CLASSA_NET; 1065 } else if (net < 192) { 1066 addr = net << IN_CLASSA_NSHIFT; 1067 mask = IN_CLASSB_NET; 1068 } else if (net < 224) { 1069 addr = net << IN_CLASSA_NSHIFT; 1070 mask = IN_CLASSC_NET; 1071 } else if (net < 256) { 1072 addr = net << IN_CLASSA_NSHIFT; 1073 mask = IN_CLASSD_NET; 1074 } else if (net < 49152) { /* 192 * 256 */ 1075 addr = net << IN_CLASSB_NSHIFT; 1076 mask = IN_CLASSB_NET; 1077 } else if (net < 57344) { /* 224 * 256 */ 1078 addr = net << IN_CLASSB_NSHIFT; 1079 mask = IN_CLASSC_NET; 1080 } else if (net < 65536) { 1081 addr = net << IN_CLASSB_NSHIFT; 1082 mask = IN_CLASSB_NET; 1083 } else if (net < 14680064L) { /* 224 * 65536 */ 1084 addr = net << IN_CLASSC_NSHIFT; 1085 mask = IN_CLASSC_NET; 1086 } else if (net < 16777216L) { 1087 addr = net << IN_CLASSC_NSHIFT; 1088 mask = IN_CLASSD_NET; 1089 } else { 1090 addr = net; 1091 if ((addr & IN_CLASSA_HOST) == 0) 1092 mask = IN_CLASSA_NET; 1093 else if ((addr & IN_CLASSB_HOST) == 0) 1094 mask = IN_CLASSB_NET; 1095 else if ((addr & IN_CLASSC_HOST) == 0) 1096 mask = IN_CLASSC_NET; 1097 else 1098 mask = -1; 1099 } 1100 isin->sin_addr.s_addr = htonl(addr); 1101 isin = &so_mask.sin; 1102 isin->sin_addr.s_addr = htonl(mask); 1103 isin->sin_len = 0; 1104 isin->sin_family = 0; 1105 cp = (char *)(&isin->sin_addr + 1); 1106 while (*--cp == 0 && cp > (char *)isin) 1107 ; 1108 isin->sin_len = 1 + cp - (char *)isin; 1109 isin->sin_family = AF_INET; 1110 } 1111 1112 #ifdef INET6 1113 /* 1114 * XXX the function may need more improvement... 1115 */ 1116 static int 1117 inet6_makenetandmask(struct sockaddr_in6 *sin6) 1118 { 1119 const char *plen; 1120 struct in6_addr in6; 1121 1122 plen = NULL; 1123 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 1124 sin6->sin6_scope_id == 0) { 1125 plen = "0"; 1126 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 1127 /* aggregatable global unicast - RFC2374 */ 1128 memset(&in6, 0, sizeof(in6)); 1129 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 1130 plen = "64"; 1131 } 1132 1133 if (!plen || strcmp(plen, "128") == 0) 1134 return 1; 1135 else { 1136 rtm_addrs |= RTA_NETMASK; 1137 (void)prefixlen(plen); 1138 return 0; 1139 } 1140 } 1141 #endif 1142 1143 /* 1144 * Interpret an argument as a network address of some kind, 1145 * returning 1 if a host address, 0 if a network address. 1146 */ 1147 static int 1148 getaddr(int which, char *s, struct hostent **hpp) 1149 { 1150 sup su; 1151 struct hostent *hp; 1152 struct netent *np; 1153 u_int32_t val; 1154 char *t; 1155 int afamily; /* local copy of af so we can change it */ 1156 1157 if (af == 0) { 1158 af = AF_INET; 1159 aflen = sizeof(struct sockaddr_in); 1160 } 1161 afamily = af; 1162 rtm_addrs |= which; 1163 switch (which) { 1164 case RTA_DST: 1165 su = &so_dst; 1166 break; 1167 case RTA_GATEWAY: 1168 su = &so_gate; 1169 break; 1170 case RTA_NETMASK: 1171 su = &so_mask; 1172 break; 1173 case RTA_GENMASK: 1174 su = &so_genmask; 1175 break; 1176 case RTA_IFP: 1177 su = &so_ifp; 1178 afamily = AF_LINK; 1179 break; 1180 case RTA_IFA: 1181 su = &so_ifa; 1182 su->sa.sa_family = af; 1183 break; 1184 default: 1185 su = NULL; 1186 usage("Internal Error"); 1187 /*NOTREACHED*/ 1188 } 1189 su->sa.sa_len = aflen; 1190 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1191 if (strcmp(s, "default") == 0) { 1192 switch (which) { 1193 case RTA_DST: 1194 forcenet++; 1195 (void)getaddr(RTA_NETMASK, s, 0); 1196 break; 1197 case RTA_NETMASK: 1198 case RTA_GENMASK: 1199 su->sa.sa_len = 0; 1200 } 1201 return (0); 1202 } 1203 switch (afamily) { 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, "%s: bad value", 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, "%s: address resolved to multiple values", 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 #ifndef SMALL 1254 case AF_NS: 1255 if (which == RTA_DST) { 1256 struct sockaddr_ns *sms = &(so_mask.sns); 1257 memset(sms, 0, sizeof(*sms)); 1258 sms->sns_family = 0; 1259 sms->sns_len = 6; 1260 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1261 rtm_addrs |= RTA_NETMASK; 1262 } 1263 su->sns.sns_addr = ns_addr(s); 1264 return (!ns_nullhost(su->sns.sns_addr)); 1265 1266 case AF_OSI: 1267 su->siso.siso_addr = *iso_addr(s); 1268 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1269 char *cp = (char *)TSEL(&su->siso); 1270 su->siso.siso_nlen = 0; 1271 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1272 su->siso.siso_len = 1 + cp - (char *)su; 1273 } 1274 return (1); 1275 1276 case AF_CCITT: 1277 ccitt_addr(s, &su->sx25); 1278 return (which == RTA_DST ? x25_makemask() : 1); 1279 #endif /* SMALL */ 1280 1281 case PF_ROUTE: 1282 su->sa.sa_len = sizeof(*su); 1283 sockaddr(s, &su->sa); 1284 return (1); 1285 1286 #ifndef SMALL 1287 case AF_APPLETALK: 1288 t = strchr (s, '.'); 1289 if (!t) { 1290 badataddr: 1291 errx(1, "bad address: %s", s); 1292 } 1293 val = atoi (s); 1294 if (val > 65535) 1295 goto badataddr; 1296 su->sat.sat_addr.s_net = val; 1297 val = atoi (t); 1298 if (val > 256) 1299 goto badataddr; 1300 su->sat.sat_addr.s_node = val; 1301 rtm_addrs |= RTA_NETMASK; 1302 return(forcehost || su->sat.sat_addr.s_node != 0); 1303 #endif 1304 1305 case AF_LINK: 1306 link_addr(s, &su->sdl); 1307 return (1); 1308 1309 case AF_INET: 1310 default: 1311 break; 1312 } 1313 1314 if (hpp == NULL) 1315 hpp = &hp; 1316 *hpp = NULL; 1317 1318 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 1319 *t = '\0'; 1320 if (forcenet == 0) { 1321 if ((val = inet_addr(s)) != INADDR_NONE) { 1322 inet_makenetandmask(htonl(val), &su->sin); 1323 return prefixlen(&t[1]); 1324 } 1325 } else { 1326 if ((val = inet_network(s)) != INADDR_NONE) { 1327 inet_makenetandmask(val, &su->sin); 1328 return prefixlen(&t[1]); 1329 } 1330 } 1331 *t = '/'; 1332 } 1333 if (inet_aton(s, &su->sin.sin_addr) && 1334 (which != RTA_DST || forcenet == 0)) { 1335 val = su->sin.sin_addr.s_addr; 1336 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1337 return (1); 1338 else { 1339 val = ntohl(val); 1340 goto netdone; 1341 } 1342 } 1343 if ((val = inet_network(s)) != INADDR_NONE || 1344 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1345 netdone: 1346 if (which == RTA_DST) 1347 inet_makenetandmask(val, &su->sin); 1348 return (0); 1349 } 1350 hp = gethostbyname(s); 1351 if (hp) { 1352 *hpp = hp; 1353 su->sin.sin_family = hp->h_addrtype; 1354 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1355 return (1); 1356 } 1357 errx(1, "%s: bad value", s); 1358 /*NOTREACHED*/ 1359 } 1360 1361 int 1362 prefixlen(const char *s) 1363 { 1364 int len = atoi(s), q, r; 1365 int max; 1366 1367 switch (af) { 1368 case AF_INET: 1369 max = sizeof(struct in_addr) * 8; 1370 break; 1371 #ifdef INET6 1372 case AF_INET6: 1373 max = sizeof(struct in6_addr) * 8; 1374 break; 1375 #endif 1376 default: 1377 errx(1, "prefixlen is not supported with af %d", af); 1378 /*NOTREACHED*/ 1379 } 1380 1381 rtm_addrs |= RTA_NETMASK; 1382 if (len < -1 || len > max) 1383 errx(1, "%s: bad value", s); 1384 1385 q = len >> 3; 1386 r = len & 7; 1387 switch (af) { 1388 case AF_INET: 1389 memset(&so_mask, 0, sizeof(so_mask)); 1390 so_mask.sin.sin_family = AF_INET; 1391 so_mask.sin.sin_len = sizeof(struct sockaddr_in); 1392 so_mask.sin.sin_addr.s_addr = htonl(0xffffffff << (32 - len)); 1393 break; 1394 #ifdef INET6 1395 case AF_INET6: 1396 so_mask.sin6.sin6_family = AF_INET6; 1397 so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1398 memset((void *)&so_mask.sin6.sin6_addr, 0, 1399 sizeof(so_mask.sin6.sin6_addr)); 1400 if (q > 0) 1401 memset((void *)&so_mask.sin6.sin6_addr, 0xff, q); 1402 if (r > 0) 1403 *((u_char *)&so_mask.sin6.sin6_addr + q) = 1404 (0xff00 >> r) & 0xff; 1405 break; 1406 #endif 1407 } 1408 return (len == max); 1409 } 1410 1411 #ifndef SMALL 1412 int 1413 x25_makemask(void) 1414 { 1415 char *cp; 1416 1417 if ((rtm_addrs & RTA_NETMASK) == 0) { 1418 rtm_addrs |= RTA_NETMASK; 1419 for (cp = (char *)&so_mask.sx25.x25_net; 1420 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1421 *cp = -1; 1422 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1423 } 1424 return 0; 1425 } 1426 1427 1428 const char * 1429 ns_print(struct sockaddr_ns *sns) 1430 { 1431 struct ns_addr work; 1432 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1433 u_short port; 1434 static char mybuf[50], cport[10], chost[25]; 1435 const char *host = ""; 1436 char *p; 1437 u_char *q; 1438 1439 work = sns->sns_addr; 1440 port = ntohs(work.x_port); 1441 work.x_port = 0; 1442 net.net_e = work.x_net; 1443 if (ns_nullhost(work) && net.int32_t_e == 0) { 1444 if (!port) 1445 return ("*.*"); 1446 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1447 return (mybuf); 1448 } 1449 1450 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1451 host = "any"; 1452 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1453 host = "*"; 1454 else { 1455 q = work.x_host.c_host; 1456 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1457 q[0], q[1], q[2], q[3], q[4], q[5]); 1458 for (p = chost; *p == '0' && p < chost + 12; p++) 1459 /* void */; 1460 host = p; 1461 } 1462 if (port) 1463 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1464 else 1465 *cport = 0; 1466 1467 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1468 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1469 return (mybuf); 1470 } 1471 1472 static void 1473 interfaces(void) 1474 { 1475 size_t needed; 1476 int mib[6]; 1477 char *buf, *lim, *next; 1478 struct rt_msghdr *rtm; 1479 1480 mib[0] = CTL_NET; 1481 mib[1] = PF_ROUTE; 1482 mib[2] = 0; /* protocol */ 1483 mib[3] = 0; /* wildcard address family */ 1484 mib[4] = NET_RT_IFLIST; 1485 mib[5] = 0; /* no flags */ 1486 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1487 err(1, "route-sysctl-estimate"); 1488 if (needed) { 1489 if ((buf = malloc(needed)) == NULL) 1490 err(1, "malloc"); 1491 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1492 err(1, "actual retrieval of interface table"); 1493 lim = buf + needed; 1494 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1495 rtm = (struct rt_msghdr *)next; 1496 print_rtmsg(rtm, rtm->rtm_msglen); 1497 } 1498 free(buf); 1499 } 1500 } 1501 1502 static void 1503 monitor(void) 1504 { 1505 int n; 1506 char msg[2048]; 1507 1508 verbose = 1; 1509 if (debugonly) { 1510 interfaces(); 1511 exit(0); 1512 } 1513 for(;;) { 1514 time_t now; 1515 n = read(sock, msg, 2048); 1516 now = time(NULL); 1517 (void)printf("got message of size %d on %s", n, ctime(&now)); 1518 print_rtmsg((struct rt_msghdr *)msg, n); 1519 } 1520 } 1521 1522 #endif /* SMALL */ 1523 1524 1525 struct { 1526 struct rt_msghdr m_rtm; 1527 char m_space[512]; 1528 } m_rtmsg; 1529 1530 static int 1531 rtmsg(int cmd, int flags) 1532 { 1533 static int seq; 1534 int rlen; 1535 char *cp = m_rtmsg.m_space; 1536 int l; 1537 1538 #define NEXTADDR(w, u) \ 1539 if (rtm_addrs & (w)) {\ 1540 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1541 if (verbose && ! shortoutput) sodump(&(u),#u);\ 1542 } 1543 1544 errno = 0; 1545 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1546 if (cmd == 'a') 1547 cmd = RTM_ADD; 1548 else if (cmd == 'c') 1549 cmd = RTM_CHANGE; 1550 else if (cmd == 'g') { 1551 #ifdef SMALL 1552 return (-1); 1553 #else /* SMALL */ 1554 cmd = RTM_GET; 1555 if (so_ifp.sa.sa_family == 0) { 1556 so_ifp.sa.sa_family = AF_LINK; 1557 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1558 rtm_addrs |= RTA_IFP; 1559 } 1560 #endif /* SMALL */ 1561 } else 1562 cmd = RTM_DELETE; 1563 #define rtm m_rtmsg.m_rtm 1564 rtm.rtm_type = cmd; 1565 rtm.rtm_flags = flags; 1566 rtm.rtm_version = RTM_VERSION; 1567 rtm.rtm_seq = ++seq; 1568 rtm.rtm_addrs = rtm_addrs; 1569 rtm.rtm_rmx = rt_metrics; 1570 rtm.rtm_inits = rtm_inits; 1571 1572 if (rtm_addrs & RTA_NETMASK) 1573 mask_addr(); 1574 NEXTADDR(RTA_DST, so_dst); 1575 NEXTADDR(RTA_GATEWAY, so_gate); 1576 NEXTADDR(RTA_NETMASK, so_mask); 1577 NEXTADDR(RTA_GENMASK, so_genmask); 1578 NEXTADDR(RTA_IFP, so_ifp); 1579 NEXTADDR(RTA_IFA, so_ifa); 1580 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1581 if (verbose && ! shortoutput) { 1582 if (rtm_addrs) 1583 putchar('\n'); 1584 print_rtmsg(&rtm, l); 1585 } 1586 if (debugonly) 1587 return (0); 1588 if ((rlen = write(sock, (char *)&m_rtmsg, l)) < 0) { 1589 warnx("writing to routing socket: %s", route_strerror(errno)); 1590 return (-1); 1591 } 1592 if (rlen < l) { 1593 warnx("write to routing socket, got %d for rlen", rlen); 1594 return 1; 1595 } 1596 #ifndef SMALL 1597 if (cmd == RTM_GET) { 1598 do { 1599 l = read(sock, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1600 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1601 if (l < 0) 1602 err(1, "read from routing socket"); 1603 else 1604 return print_getmsg(&rtm, l); 1605 } 1606 #endif /* SMALL */ 1607 #undef rtm 1608 return (0); 1609 } 1610 1611 static void 1612 mask_addr(void) 1613 { 1614 int olen = so_mask.sa.sa_len; 1615 char *cp1 = olen + (char *)&so_mask, *cp2; 1616 1617 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1618 if (*--cp1 != 0) { 1619 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1620 break; 1621 } 1622 if ((rtm_addrs & RTA_DST) == 0) 1623 return; 1624 switch (so_dst.sa.sa_family) { 1625 case AF_INET: 1626 #ifdef INET6 1627 case AF_INET6: 1628 #endif 1629 #ifndef SMALL 1630 case AF_APPLETALK: 1631 case AF_NS: 1632 case AF_CCITT: 1633 #endif /* SMALL */ 1634 case 0: 1635 return; 1636 #ifndef SMALL 1637 case AF_ISO: 1638 olen = MIN(so_dst.siso.siso_nlen, 1639 MAX(so_mask.sa.sa_len - 6, 0)); 1640 break; 1641 #endif /* SMALL */ 1642 } 1643 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1644 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1645 while (cp2 > cp1) 1646 *--cp2 = 0; 1647 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1648 while (cp1 > so_dst.sa.sa_data) 1649 *--cp1 &= *--cp2; 1650 #ifndef SMALL 1651 switch (so_dst.sa.sa_family) { 1652 case AF_ISO: 1653 so_dst.siso.siso_nlen = olen; 1654 break; 1655 } 1656 #endif /* SMALL */ 1657 } 1658 1659 const char *msgtypes[] = { 1660 "", 1661 "RTM_ADD: Add Route", 1662 "RTM_DELETE: Delete Route", 1663 "RTM_CHANGE: Change Metrics or flags", 1664 "RTM_GET: Report Metrics", 1665 "RTM_LOSING: Kernel Suspects Partitioning", 1666 "RTM_REDIRECT: Told to use different route", 1667 "RTM_MISS: Lookup failed on this address", 1668 "RTM_LOCK: fix specified metrics", 1669 "RTM_OLDADD: caused by SIOCADDRT", 1670 "RTM_OLDDEL: caused by SIOCDELRT", 1671 "RTM_RESOLVE: Route created by cloning", 1672 "RTM_NEWADDR: address being added to iface", 1673 "RTM_DELADDR: address being removed from iface", 1674 "RTM_OIFINFO: iface status change (pre-1.5)", 1675 "RTM_IFINFO: iface status change", 1676 "RTM_IFANNOUNCE: iface arrival/departure", 1677 "RTM_IEEE80211: IEEE80211 wireless event", 1678 0, 1679 }; 1680 1681 char metricnames[] = 1682 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1683 char routeflags[] = 1684 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1685 char ifnetflags[] = 1686 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1687 char addrnames[] = 1688 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1689 1690 1691 #ifndef SMALL 1692 static const char * 1693 linkstate(struct if_msghdr *ifm) 1694 { 1695 static char buf[64]; 1696 1697 switch (ifm->ifm_data.ifi_link_state) { 1698 case LINK_STATE_UNKNOWN: 1699 return "carrier: unknown"; 1700 case LINK_STATE_DOWN: 1701 return "carrier: no carrier"; 1702 case LINK_STATE_UP: 1703 return "carrier: active"; 1704 default: 1705 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1706 ifm->ifm_data.ifi_link_state); 1707 return buf; 1708 } 1709 } 1710 #endif /* SMALL */ 1711 1712 static void 1713 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1714 { 1715 struct if_msghdr *ifm; 1716 struct ifa_msghdr *ifam; 1717 struct if_announcemsghdr *ifan; 1718 union { 1719 struct ieee80211_join_event join; 1720 struct ieee80211_leave_event leave; 1721 struct ieee80211_replay_event replay; 1722 struct ieee80211_michael_event michael; 1723 } ev; 1724 size_t evlen = 0; 1725 1726 if (verbose == 0) 1727 return; 1728 if (rtm->rtm_version != RTM_VERSION) { 1729 (void)printf("routing message version %d not understood\n", 1730 rtm->rtm_version); 1731 return; 1732 } 1733 if (msgtypes[rtm->rtm_type]) 1734 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1735 else 1736 (void)printf("#%d: ", rtm->rtm_type); 1737 (void)printf("len %d, ", rtm->rtm_msglen); 1738 switch (rtm->rtm_type) { 1739 case RTM_IFINFO: 1740 ifm = (struct if_msghdr *)rtm; 1741 (void)printf("if# %d, %s, flags: ", ifm->ifm_index, 1742 #ifdef SMALL 1743 "" 1744 #else 1745 linkstate(ifm) 1746 #endif /* SMALL */ 1747 ); 1748 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1749 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1750 break; 1751 case RTM_NEWADDR: 1752 case RTM_DELADDR: 1753 ifam = (struct ifa_msghdr *)rtm; 1754 (void)printf("metric %d, flags: ", ifam->ifam_metric); 1755 bprintf(stdout, ifam->ifam_flags, routeflags); 1756 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1757 break; 1758 case RTM_IEEE80211: 1759 ifan = (struct if_announcemsghdr *)rtm; 1760 (void)printf("if# %d, what: ", ifan->ifan_index); 1761 switch (ifan->ifan_what) { 1762 case RTM_IEEE80211_ASSOC: 1763 printf("associate"); 1764 break; 1765 case RTM_IEEE80211_REASSOC: 1766 printf("re-associate"); 1767 break; 1768 case RTM_IEEE80211_DISASSOC: 1769 printf("disassociate"); 1770 break; 1771 case RTM_IEEE80211_SCAN: 1772 printf("scan complete"); 1773 break; 1774 case RTM_IEEE80211_JOIN: 1775 evlen = sizeof(ev.join); 1776 printf("join"); 1777 break; 1778 case RTM_IEEE80211_LEAVE: 1779 evlen = sizeof(ev.leave); 1780 printf("leave"); 1781 break; 1782 case RTM_IEEE80211_MICHAEL: 1783 evlen = sizeof(ev.michael); 1784 printf("michael"); 1785 break; 1786 case RTM_IEEE80211_REPLAY: 1787 evlen = sizeof(ev.replay); 1788 printf("replay"); 1789 break; 1790 default: 1791 evlen = 0; 1792 printf("#%d", ifan->ifan_what); 1793 break; 1794 } 1795 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1796 printf(" (truncated)\n"); 1797 break; 1798 } 1799 (void)memcpy(&ev, (ifan + 1), evlen); 1800 switch (ifan->ifan_what) { 1801 case RTM_IEEE80211_JOIN: 1802 case RTM_IEEE80211_LEAVE: 1803 printf(" mac %" PRIETHER, 1804 PRIETHER_ARGS(ev.join.iev_addr)); 1805 break; 1806 case RTM_IEEE80211_REPLAY: 1807 case RTM_IEEE80211_MICHAEL: 1808 printf(" src %" PRIETHER " dst %" PRIETHER 1809 " cipher %" PRIu8 " keyix %" PRIu8, 1810 PRIETHER_ARGS(ev.replay.iev_src), 1811 PRIETHER_ARGS(ev.replay.iev_dst), 1812 ev.replay.iev_cipher, 1813 ev.replay.iev_keyix); 1814 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1815 printf(" key rsc %#" PRIx64 1816 " frame rsc %#" PRIx64, 1817 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1818 } 1819 break; 1820 default: 1821 break; 1822 } 1823 printf("\n"); 1824 break; 1825 case RTM_IFANNOUNCE: 1826 ifan = (struct if_announcemsghdr *)rtm; 1827 (void)printf("if# %d, what: ", ifan->ifan_index); 1828 switch (ifan->ifan_what) { 1829 case IFAN_ARRIVAL: 1830 printf("arrival"); 1831 break; 1832 case IFAN_DEPARTURE: 1833 printf("departure"); 1834 break; 1835 default: 1836 printf("#%d", ifan->ifan_what); 1837 break; 1838 } 1839 printf("\n"); 1840 break; 1841 default: 1842 (void)printf("pid %d, seq %d, errno %d, flags: ", 1843 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1844 bprintf(stdout, rtm->rtm_flags, routeflags); 1845 pmsg_common(rtm); 1846 } 1847 } 1848 1849 #ifndef SMALL 1850 static int 1851 print_getmsg(struct rt_msghdr *rtm, int msglen) 1852 { 1853 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1854 struct sockaddr_dl *ifp = NULL; 1855 struct sockaddr *sa; 1856 char *cp; 1857 int i; 1858 1859 if (! shortoutput) 1860 (void)printf(" route to: %s\n", 1861 routename((struct sockaddr *) &so_dst, NULL, RTF_HOST)); 1862 if (rtm->rtm_version != RTM_VERSION) { 1863 warnx("routing message version %d not understood", 1864 rtm->rtm_version); 1865 return 1; 1866 } 1867 if (rtm->rtm_msglen > msglen) { 1868 warnx("message length mismatch, in packet %d, returned %d", 1869 rtm->rtm_msglen, msglen); 1870 } 1871 if (rtm->rtm_errno) { 1872 warnx("RTM_GET: %s (errno %d)", 1873 strerror(rtm->rtm_errno), rtm->rtm_errno); 1874 return 1; 1875 } 1876 cp = ((char *)(rtm + 1)); 1877 if (rtm->rtm_addrs) 1878 for (i = 1; i; i <<= 1) 1879 if (i & rtm->rtm_addrs) { 1880 sa = (struct sockaddr *)cp; 1881 switch (i) { 1882 case RTA_DST: 1883 dst = sa; 1884 break; 1885 case RTA_GATEWAY: 1886 gate = sa; 1887 break; 1888 case RTA_NETMASK: 1889 mask = sa; 1890 break; 1891 case RTA_IFP: 1892 if (sa->sa_family == AF_LINK && 1893 ((struct sockaddr_dl *)sa)->sdl_nlen) 1894 ifp = (struct sockaddr_dl *)sa; 1895 break; 1896 case RTA_IFA: 1897 ifa = sa; 1898 break; 1899 } 1900 ADVANCE(cp, sa); 1901 } 1902 if (dst && mask) 1903 mask->sa_family = dst->sa_family; /* XXX */ 1904 if (dst && ! shortoutput) 1905 (void)printf("destination: %s\n", 1906 routename(dst, mask, RTF_HOST)); 1907 if (mask && ! shortoutput) { 1908 int savenflag = nflag; 1909 1910 nflag = 1; 1911 (void)printf(" mask: %s\n", 1912 routename(mask, NULL, RTF_HOST)); 1913 nflag = savenflag; 1914 } 1915 if (gate && rtm->rtm_flags & RTF_GATEWAY) { 1916 const char *name; 1917 1918 name = routename(gate, NULL, RTF_HOST); 1919 if (shortoutput) { 1920 if (*name == '\0') 1921 return (1); 1922 (void)printf("%s\n", name); 1923 } else 1924 (void)printf(" gateway: %s\n", name); 1925 } 1926 if (ifa && ! shortoutput) 1927 (void)printf(" local addr: %s\n", 1928 routename(ifa, NULL, RTF_HOST)); 1929 if (ifp && ! shortoutput) 1930 (void)printf(" interface: %.*s\n", 1931 ifp->sdl_nlen, ifp->sdl_data); 1932 if (! shortoutput) { 1933 (void)printf(" flags: "); 1934 bprintf(stdout, rtm->rtm_flags, routeflags); 1935 } 1936 1937 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1938 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1939 1940 if (! shortoutput) { 1941 (void)printf("\n%s\n", "\ 1942 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1943 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1944 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1945 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1946 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1947 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1948 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1949 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1950 if (rtm->rtm_rmx.rmx_expire) 1951 rtm->rtm_rmx.rmx_expire -= time(0); 1952 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1953 } 1954 #undef lock 1955 #undef msec 1956 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1957 1958 if (shortoutput) 1959 return ((rtm->rtm_addrs & RTF_GATEWAY) == 0); 1960 else if (verbose) 1961 pmsg_common(rtm); 1962 else if (rtm->rtm_addrs &~ RTA_IGN) { 1963 (void)printf("sockaddrs: "); 1964 bprintf(stdout, rtm->rtm_addrs, addrnames); 1965 putchar('\n'); 1966 } 1967 return 0; 1968 #undef RTA_IGN 1969 } 1970 #endif /* SMALL */ 1971 1972 void 1973 pmsg_common(struct rt_msghdr *rtm) 1974 { 1975 (void)printf("\nlocks: "); 1976 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1977 (void)printf(" inits: "); 1978 bprintf(stdout, rtm->rtm_inits, metricnames); 1979 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1980 } 1981 1982 static void 1983 pmsg_addrs(char *cp, int addrs) 1984 { 1985 struct sockaddr *sa[RTAX_MAX]; 1986 int i, nmf; 1987 1988 if (addrs != 0) { 1989 (void)printf("\nsockaddrs: "); 1990 bprintf(stdout, addrs, addrnames); 1991 (void)putchar('\n'); 1992 nmf = -1; 1993 for (i = 0; i < RTAX_MAX; i++) { 1994 if ((1 << i) & addrs) { 1995 sa[i] = (struct sockaddr *)cp; 1996 if ((i == RTAX_DST || i == RTAX_IFA) && 1997 nmf == -1) 1998 nmf = sa[i]->sa_family; 1999 ADVANCE(cp, sa[i]); 2000 } else 2001 sa[i] = NULL; 2002 } 2003 for (i = 0; i < RTAX_MAX; i++) { 2004 if (sa[i] != NULL) { 2005 if (i == RTAX_NETMASK && sa[i]->sa_len) 2006 (void)printf(" %s", 2007 netmask_string(sa[i], -1, nmf)); 2008 else 2009 (void)printf(" %s", 2010 routename(sa[i], NULL, RTF_HOST)); 2011 } 2012 } 2013 } 2014 (void)putchar('\n'); 2015 (void)fflush(stdout); 2016 } 2017 2018 static void 2019 bprintf(FILE *fp, int b, u_char *s) 2020 { 2021 int i; 2022 int gotsome = 0; 2023 2024 if (b == 0) 2025 return; 2026 while ((i = *s++) != 0) { 2027 if (b & (1 << (i-1))) { 2028 if (gotsome == 0) 2029 i = '<'; 2030 else 2031 i = ','; 2032 (void)putc(i, fp); 2033 gotsome = 1; 2034 for (; (i = *s) > 32; s++) 2035 (void)putc(i, fp); 2036 } else 2037 while (*s > 32) 2038 s++; 2039 } 2040 if (gotsome) 2041 (void)putc('>', fp); 2042 } 2043 2044 int 2045 keyword(char *cp) 2046 { 2047 struct keytab *kt = keywords; 2048 2049 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 2050 kt++; 2051 return kt->kt_i; 2052 } 2053 2054 static void 2055 sodump(sup su, const char *which) 2056 { 2057 #ifdef INET6 2058 char ntop_buf[NI_MAXHOST]; 2059 #endif 2060 2061 switch (su->sa.sa_family) { 2062 case AF_INET: 2063 (void)printf("%s: inet %s; ", 2064 which, inet_ntoa(su->sin.sin_addr)); 2065 break; 2066 #ifndef SMALL 2067 case AF_APPLETALK: 2068 (void)printf("%s: atalk %d.%d; ", 2069 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 2070 break; 2071 #endif 2072 case AF_LINK: 2073 (void)printf("%s: link %s; ", 2074 which, link_ntoa(&su->sdl)); 2075 break; 2076 #ifdef INET6 2077 case AF_INET6: 2078 (void)printf("%s: inet6 %s; ", 2079 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 2080 ntop_buf, sizeof(ntop_buf))); 2081 break; 2082 #endif 2083 #ifndef SMALL 2084 case AF_ISO: 2085 (void)printf("%s: iso %s; ", 2086 which, iso_ntoa(&su->siso.siso_addr)); 2087 break; 2088 case AF_NS: 2089 (void)printf("%s: xns %s; ", 2090 which, ns_ntoa(su->sns.sns_addr)); 2091 break; 2092 #endif /* SMALL */ 2093 default: 2094 (void)printf("%s: (%d) %s; ", 2095 which, su->sa.sa_family, any_ntoa(&su->sa)); 2096 } 2097 (void)fflush(stdout); 2098 } 2099 2100 /* States*/ 2101 #define VIRGIN 0 2102 #define GOTONE 1 2103 #define GOTTWO 2 2104 /* Inputs */ 2105 #define DIGIT (4*0) 2106 #define END (4*1) 2107 #define DELIM (4*2) 2108 2109 static void 2110 sockaddr(char *addr, struct sockaddr *sa) 2111 { 2112 char *cp = (char *)sa; 2113 int size = sa->sa_len; 2114 char *cplim = cp + size; 2115 int byte = 0, state = VIRGIN, new = 0; 2116 2117 (void)memset(cp, 0, size); 2118 cp++; 2119 do { 2120 if ((*addr >= '0') && (*addr <= '9')) { 2121 new = *addr - '0'; 2122 } else if ((*addr >= 'a') && (*addr <= 'f')) { 2123 new = *addr - 'a' + 10; 2124 } else if ((*addr >= 'A') && (*addr <= 'F')) { 2125 new = *addr - 'A' + 10; 2126 } else if (*addr == 0) 2127 state |= END; 2128 else 2129 state |= DELIM; 2130 addr++; 2131 switch (state /* | INPUT */) { 2132 case GOTTWO | DIGIT: 2133 *cp++ = byte; /*FALLTHROUGH*/ 2134 case VIRGIN | DIGIT: 2135 state = GOTONE; byte = new; continue; 2136 case GOTONE | DIGIT: 2137 state = GOTTWO; byte = new + (byte << 4); continue; 2138 default: /* | DELIM */ 2139 state = VIRGIN; *cp++ = byte; byte = 0; continue; 2140 case GOTONE | END: 2141 case GOTTWO | END: 2142 *cp++ = byte; /* FALLTHROUGH */ 2143 case VIRGIN | END: 2144 break; 2145 } 2146 break; 2147 } while (cp < cplim); 2148 sa->sa_len = cp - (char *)sa; 2149 } 2150
Indexes created Thu Sep 25 02:09:54 GMT 2025