route.c revision 1.73
1 /* $NetBSD: route.c,v 1.73 2004/05/15 14:13:36 itojun 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 1.73 2004/05/15 14:13:36 itojun 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 <netinet/in.h> 57 #include <netatalk/at.h> 58 #include <netns/ns.h> 59 #include <netiso/iso.h> 60 #include <netccitt/x25.h> 61 #include <arpa/inet.h> 62 #include <netdb.h> 63 64 #include <errno.h> 65 #include <unistd.h> 66 #include <stdio.h> 67 #include <ctype.h> 68 #include <stdlib.h> 69 #include <string.h> 70 #include <time.h> 71 #include <paths.h> 72 #include <err.h> 73 74 #include "keywords.h" 75 #include "extern.h" 76 77 typedef union sockunion *sup; 78 79 int main __P((int, char **)); 80 static void usage __P((char *)) __attribute__((__noreturn__)); 81 static char *any_ntoa __P((const struct sockaddr *)); 82 static void set_metric __P((char *, int)); 83 static int newroute __P((int, char **)); 84 static void inet_makenetandmask __P((u_int32_t, struct sockaddr_in *)); 85 #ifdef INET6 86 static int inet6_makenetandmask __P((struct sockaddr_in6 *)); 87 #endif 88 static int getaddr __P((int, char *, struct hostent **)); 89 static int flushroutes __P((int, char *[], int)); 90 #ifndef SMALL 91 static int prefixlen __P((char *)); 92 static int x25_makemask __P((void)); 93 static void interfaces __P((void)); 94 static void monitor __P((void)); 95 static void print_getmsg __P((struct rt_msghdr *, int)); 96 static const char *linkstate __P((struct if_msghdr *)); 97 #endif /* SMALL */ 98 static int rtmsg __P((int, int )); 99 static void mask_addr __P((void)); 100 static void print_rtmsg __P((struct rt_msghdr *, int)); 101 static void pmsg_common __P((struct rt_msghdr *)); 102 static void pmsg_addrs __P((char *, int)); 103 static void bprintf __P((FILE *, int, u_char *)); 104 static int keyword __P((char *)); 105 static void sodump __P((sup, char *)); 106 static void sockaddr __P((char *, struct sockaddr *)); 107 108 union sockunion { 109 struct sockaddr sa; 110 struct sockaddr_in sin; 111 #ifdef INET6 112 struct sockaddr_in6 sin6; 113 #endif 114 struct sockaddr_at sat; 115 struct sockaddr_dl sdl; 116 #ifndef SMALL 117 struct sockaddr_ns sns; 118 struct sockaddr_iso siso; 119 struct sockaddr_x25 sx25; 120 #endif /* SMALL */ 121 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 122 123 int pid, rtm_addrs; 124 int sock; 125 int forcehost, forcenet, doflush, nflag, af, qflag, tflag; 126 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 127 int locking, lockrest, debugonly, shortoutput, rv; 128 struct rt_metrics rt_metrics; 129 u_int32_t rtm_inits; 130 short ns_nullh[] = {0,0,0}; 131 short ns_bh[] = {-1,-1,-1}; 132 133 134 static void 135 usage(cp) 136 char *cp; 137 { 138 139 if (cp) 140 warnx("botched keyword: %s", cp); 141 (void) fprintf(stderr, 142 "usage: %s [ -fnqvs ] cmd [[ -<qualifers> ] args ]\n", 143 getprogname()); 144 exit(1); 145 /* NOTREACHED */ 146 } 147 148 #define ROUNDUP(a) \ 149 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 150 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 151 152 int 153 main(argc, argv) 154 int argc; 155 char **argv; 156 { 157 int ch; 158 159 if (argc < 2) 160 usage(NULL); 161 162 while ((ch = getopt(argc, argv, "fnqvdts")) != -1) 163 switch(ch) { 164 case 'f': 165 doflush = 1; 166 break; 167 case 'n': 168 nflag = 1; 169 break; 170 case 'q': 171 qflag = 1; 172 break; 173 case 'v': 174 verbose = 1; 175 break; 176 case 't': 177 tflag = 1; 178 break; 179 case 'd': 180 debugonly = 1; 181 break; 182 case 's': 183 shortoutput = 1; 184 break; 185 case '?': 186 default: 187 usage(NULL); 188 /*NOTREACHED*/ 189 } 190 argc -= optind; 191 argv += optind; 192 193 pid = getpid(); 194 if (tflag) 195 sock = open("/dev/null", O_WRONLY, 0); 196 else 197 sock = socket(PF_ROUTE, SOCK_RAW, 0); 198 if (sock < 0) 199 err(1, "socket"); 200 201 if (*argv == NULL) { 202 if (doflush) 203 ch = K_FLUSH; 204 else 205 goto no_cmd; 206 } else 207 ch = keyword(*argv); 208 209 switch (ch) { 210 #ifndef SMALL 211 case K_GET: 212 #endif /* SMALL */ 213 case K_CHANGE: 214 case K_ADD: 215 case K_DELETE: 216 if (doflush) 217 (void)flushroutes(1, argv, 0); 218 return newroute(argc, argv); 219 220 case K_SHOW: 221 show(argc, argv); 222 return 0; 223 224 #ifndef SMALL 225 case K_MONITOR: 226 monitor(); 227 return 0; 228 229 #endif /* SMALL */ 230 case K_FLUSH: 231 return flushroutes(argc, argv, 0); 232 233 case K_FLUSHALL: 234 return flushroutes(argc, argv, 1); 235 no_cmd: 236 default: 237 usage(*argv); 238 /*NOTREACHED*/ 239 } 240 } 241 242 /* 243 * Purge all entries in the routing tables not 244 * associated with network interfaces. 245 */ 246 static int 247 flushroutes(argc, argv, doall) 248 int argc; 249 char *argv[]; 250 int doall; 251 { 252 size_t needed; 253 int mib[6], rlen, seqno; 254 char *buf, *next, *lim; 255 struct rt_msghdr *rtm; 256 257 af = 0; 258 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 259 if (argc > 1) { 260 argv++; 261 if (argc == 2 && **argv == '-') 262 switch (keyword(*argv + 1)) { 263 case K_INET: 264 af = AF_INET; 265 break; 266 #ifdef INET6 267 case K_INET6: 268 af = AF_INET6; 269 break; 270 #endif 271 #ifndef SMALL 272 case K_ATALK: 273 af = AF_APPLETALK; 274 break; 275 case K_XNS: 276 af = AF_NS; 277 break; 278 #endif /* SMALL */ 279 case K_LINK: 280 af = AF_LINK; 281 break; 282 #ifndef SMALL 283 case K_ISO: 284 case K_OSI: 285 af = AF_ISO; 286 break; 287 case K_X25: 288 af = AF_CCITT; 289 #endif /* SMALL */ 290 default: 291 goto bad; 292 } else 293 bad: usage(*argv); 294 } 295 mib[0] = CTL_NET; 296 mib[1] = PF_ROUTE; 297 mib[2] = 0; /* protocol */ 298 mib[3] = 0; /* wildcard address family */ 299 mib[4] = NET_RT_DUMP; 300 mib[5] = 0; /* no flags */ 301 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 302 err(1, "route-sysctl-estimate"); 303 if (needed == 0) 304 return 0; 305 if ((buf = malloc(needed)) == NULL) 306 err(1, "malloc"); 307 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 308 err(1, "actual retrieval of routing table"); 309 lim = buf + needed; 310 if (verbose) { 311 (void) printf("Examining routing table from sysctl\n"); 312 if (af) printf("(address family %s)\n", (*argv + 1)); 313 } 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 rlen = write(sock, next, rtm->rtm_msglen); 333 if (rlen < (int)rtm->rtm_msglen) { 334 warn("write to routing socket, got %d for rlen", rlen); 335 break; 336 } 337 seqno++; 338 if (qflag) 339 continue; 340 if (verbose) 341 print_rtmsg(rtm, rlen); 342 else { 343 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 344 (void) printf("%-20.20s ", 345 routename(sa, NULL, rtm->rtm_flags)); 346 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 347 (void) printf("%-20.20s ", 348 routename(sa, NULL, RTF_HOST)); 349 (void) printf("done\n"); 350 } 351 } 352 return 0; 353 } 354 355 356 static char hexlist[] = "0123456789abcdef"; 357 358 static char * 359 any_ntoa(sa) 360 const struct sockaddr *sa; 361 { 362 static char obuf[3 * 256]; 363 const char *in; 364 char *out; 365 int len; 366 367 len = sa->sa_len - offsetof(struct sockaddr, sa_data); 368 in = sa->sa_data; 369 out = obuf; 370 371 do { 372 *out++ = hexlist[(*in >> 4) & 15]; 373 *out++ = hexlist[(*in++) & 15]; 374 *out++ = '.'; 375 } while (--len > 0); 376 out[-1] = '\0'; 377 return obuf; 378 } 379 380 381 int 382 netmask_length(nm, family) 383 struct sockaddr *nm; 384 int family; 385 { 386 static int 387 /* number of bits in a nibble */ 388 _t[] = { 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4 }, 389 /* good nibbles are 1111, 1110, 1100, 1000, 0000 */ 390 _g[] = { 1,0,0,0,0,0,0,0,1,0,0,0,1,0,1,1 }; 391 int mask, good, zeroes, maskbytes, bit, i; 392 unsigned char *maskdata; 393 394 if (nm == NULL) 395 return 0; 396 397 mask = 0; 398 good = 1; 399 zeroes = 0; 400 401 switch (family) { 402 case AF_INET: { 403 struct sockaddr_in *nsin = (struct sockaddr_in *)nm; 404 maskdata = (unsigned char *) &nsin->sin_addr; 405 maskbytes = nsin->sin_len - 406 ((caddr_t)&nsin->sin_addr - (caddr_t)nsin); 407 break; 408 } 409 case AF_INET6: { 410 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nm; 411 maskdata = (unsigned char *) &sin6->sin6_addr; 412 maskbytes = sin6->sin6_len - 413 ((caddr_t)&sin6->sin6_addr - (caddr_t)sin6); 414 break; 415 } 416 default: 417 return 0; 418 } 419 420 /* 421 * Count the bits in the nibbles of the mask, and marking the 422 * netmask as not good (or at best, non-standard and very 423 * discouraged, in the case of AF_INET) if we find either of 424 * a nibble with non-contiguous bits, or a non-zero nibble 425 * after we've found a zero nibble. 426 */ 427 for (i = 0; i < maskbytes; i++) { 428 /* high nibble */ 429 mask += bit = _t[maskdata[i] >> 4]; 430 good &= _g[maskdata[i] >> 4]; 431 if (zeroes && bit) 432 good = 0; 433 if (bit == 0) 434 zeroes = 1; 435 /* low nibble */ 436 mask += bit = _t[maskdata[i] & 0xf]; 437 good &= _g[maskdata[i] & 0xf]; 438 if (zeroes && bit) 439 good = 0; 440 if (bit == 0) 441 zeroes = 1; 442 } 443 444 /* 445 * Always return the number of bits found, but as a negative 446 * if the mask wasn't one we like. 447 */ 448 return good ? mask : -mask; 449 } 450 451 char * 452 netmask_string(mask, len) 453 struct sockaddr *mask; 454 int len; 455 { 456 static char smask[16]; 457 458 if (len >= 0) 459 snprintf(smask, sizeof(smask), "%d", len); 460 else { 461 /* XXX AF_INET only?! */ 462 struct sockaddr_in nsin; 463 464 memset(&nsin, 0, sizeof(nsin)); 465 memcpy(&nsin, mask, mask->sa_len); 466 snprintf(smask, sizeof(smask), "%s", inet_ntoa(nsin.sin_addr)); 467 } 468 469 return smask; 470 } 471 472 473 char * 474 routename(sa, nm, flags) 475 struct sockaddr *sa, *nm; 476 int flags; 477 { 478 char *cp; 479 static char line[50]; 480 struct hostent *hp; 481 static char domain[MAXHOSTNAMELEN + 1]; 482 static int first = 1; 483 struct in_addr in; 484 int nml; 485 486 if ((flags & RTF_HOST) == 0) 487 return netname(sa, nm); 488 489 if (first) { 490 first = 0; 491 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 492 (cp = strchr(domain, '.'))) 493 (void)strlcpy(domain, cp + 1, sizeof(domain)); 494 else 495 domain[0] = 0; 496 } 497 498 if (sa->sa_len == 0) 499 strlcpy(line, "default", sizeof(line)); 500 else switch (sa->sa_family) { 501 502 case AF_INET: 503 in = ((struct sockaddr_in *)sa)->sin_addr; 504 nml = netmask_length(nm, AF_INET); 505 506 cp = 0; 507 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) { 508 if (nml == 0) 509 cp = "default"; 510 else { 511 static char notdefault[sizeof(NOTDEFSTRING)]; 512 513 snprintf(notdefault, sizeof(notdefault), 514 "0.0.0.0/%s", netmask_string(nm, nml)); 515 cp = notdefault; 516 } 517 } 518 if (cp == 0 && !nflag) { 519 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 520 AF_INET); 521 if (hp) { 522 if ((cp = strchr(hp->h_name, '.')) && 523 !strcmp(cp + 1, domain)) 524 *cp = 0; 525 cp = hp->h_name; 526 } 527 } 528 if (cp) 529 (void)strlcpy(line, cp, sizeof(line)); 530 else 531 (void)strlcpy(line, inet_ntoa(in), sizeof(line)); 532 break; 533 534 case AF_LINK: 535 return (link_ntoa((struct sockaddr_dl *)sa)); 536 537 #ifndef SMALL 538 #ifdef INET6 539 case AF_INET6: 540 { 541 struct sockaddr_in6 sin6; 542 int niflags; 543 544 #ifdef NI_WITHSCOPEID 545 niflags = NI_WITHSCOPEID; 546 #else 547 niflags = 0; 548 #endif 549 if (nflag) 550 niflags |= NI_NUMERICHOST; 551 memset(&sin6, 0, sizeof(sin6)); 552 memcpy(&sin6, sa, sa->sa_len); 553 sin6.sin6_len = sizeof(struct sockaddr_in6); 554 sin6.sin6_family = AF_INET6; 555 #ifdef __KAME__ 556 if (sa->sa_len == sizeof(struct sockaddr_in6) && 557 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 558 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 559 sin6.sin6_scope_id == 0) { 560 sin6.sin6_scope_id = 561 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 562 sin6.sin6_addr.s6_addr[2] = 0; 563 sin6.sin6_addr.s6_addr[3] = 0; 564 } 565 #endif 566 nml = netmask_length(nm, AF_INET6); 567 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 568 if (nml == 0) 569 strlcpy(line, "::", sizeof(line)); 570 else 571 /* noncontiguous never happens in ipv6 */ 572 snprintf(line, sizeof(line), "::/%d", nml); 573 } 574 575 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 576 line, sizeof(line), NULL, 0, niflags) != 0) 577 strlcpy(line, "invalid", sizeof(line)); 578 break; 579 } 580 #endif 581 582 case AF_NS: 583 return (ns_print((struct sockaddr_ns *)sa)); 584 585 case AF_ISO: 586 (void)snprintf(line, sizeof line, "iso %s", 587 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 588 break; 589 590 case AF_APPLETALK: 591 (void) snprintf(line, sizeof(line), "atalk %d.%d", 592 ((struct sockaddr_at *)sa)->sat_addr.s_net, 593 ((struct sockaddr_at *)sa)->sat_addr.s_node); 594 break; 595 #endif /* SMALL */ 596 597 default: 598 (void)snprintf(line, sizeof line, "(%d) %s", 599 sa->sa_family, any_ntoa(sa)); 600 break; 601 602 } 603 return (line); 604 } 605 606 /* 607 * Return the name of the network whose address is given. 608 * The address is assumed to be that of a net or subnet, not a host. 609 */ 610 char * 611 netname(sa, nm) 612 struct sockaddr *sa, *nm; 613 { 614 char *cp = 0; 615 static char line[50]; 616 struct netent *np = 0; 617 u_int32_t net, mask; 618 u_int32_t i; 619 int subnetshift, nml; 620 struct in_addr in; 621 622 switch (sa->sa_family) { 623 624 case AF_INET: 625 in = ((struct sockaddr_in *)sa)->sin_addr; 626 i = ntohl(in.s_addr); 627 nml = netmask_length(nm, AF_INET); 628 if (i == 0) { 629 if (nml == 0) 630 cp = "default"; 631 else { 632 static char notdefault[sizeof(NOTDEFSTRING)]; 633 634 snprintf(notdefault, sizeof(notdefault), 635 "0.0.0.0/%s", netmask_string(nm, nml)); 636 cp = notdefault; 637 } 638 } 639 else if (!nflag) { 640 if (IN_CLASSA(i)) { 641 mask = IN_CLASSA_NET; 642 subnetshift = 8; 643 } else if (IN_CLASSB(i)) { 644 mask = IN_CLASSB_NET; 645 subnetshift = 8; 646 } else { 647 mask = IN_CLASSC_NET; 648 subnetshift = 4; 649 } 650 /* 651 * If there are more bits than the standard mask 652 * would suggest, subnets must be in use. 653 * Guess at the subnet mask, assuming reasonable 654 * width subnet fields. 655 */ 656 while (i &~ mask) 657 mask = (int32_t)mask >> subnetshift; 658 net = i & mask; 659 while ((mask & 1) == 0) 660 mask >>= 1, net >>= 1; 661 np = getnetbyaddr(net, AF_INET); 662 if (np) 663 cp = np->n_name; 664 } 665 if (cp) 666 (void)strlcpy(line, cp, sizeof(line)); 667 else { 668 #if 0 /* XXX - This is silly... */ 669 #define C(x) ((x) & 0xff) 670 if ((i & 0xffffff) == 0) 671 (void)snprintf(line, sizeof line, "%u", 672 C(i >> 24)); 673 else if ((i & 0xffff) == 0) 674 (void)snprintf(line, sizeof line, "%u.%u", 675 C(i >> 24), C(i >> 16)); 676 else if ((i & 0xff) == 0) 677 (void)snprintf(line, sizeof line, "%u.%u.%u", 678 C(i >> 24), C(i >> 16), C(i >> 8)); 679 else 680 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 681 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 682 #undef C 683 #else /* XXX */ 684 if (nml == 0) 685 strlcpy(line, inet_ntoa(in), sizeof(line)); 686 else 687 snprintf(line, sizeof(line), "%s/%d", inet_ntoa(in), nml); 688 #endif /* XXX */ 689 } 690 break; 691 692 case AF_LINK: 693 return (link_ntoa((struct sockaddr_dl *)sa)); 694 695 #ifndef SMALL 696 #ifdef INET6 697 case AF_INET6: 698 { 699 struct sockaddr_in6 sin6; 700 int niflags; 701 702 #ifdef NI_WITHSCOPEID 703 niflags = NI_WITHSCOPEID; 704 #else 705 niflags = 0; 706 #endif 707 if (nflag) 708 niflags |= NI_NUMERICHOST; 709 memset(&sin6, 0, sizeof(sin6)); 710 memcpy(&sin6, sa, sa->sa_len); 711 sin6.sin6_len = sizeof(struct sockaddr_in6); 712 sin6.sin6_family = AF_INET6; 713 #ifdef __KAME__ 714 if (sa->sa_len == sizeof(struct sockaddr_in6) && 715 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 716 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 717 sin6.sin6_scope_id == 0) { 718 sin6.sin6_scope_id = 719 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 720 sin6.sin6_addr.s6_addr[2] = 0; 721 sin6.sin6_addr.s6_addr[3] = 0; 722 } 723 #endif 724 nml = netmask_length(nm, AF_INET6); 725 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 726 if (nml == 0) 727 strlcpy(line, "::", sizeof(line)); 728 else 729 /* noncontiguous never happens in ipv6 */ 730 snprintf(line, sizeof(line), "::/%d", nml); 731 } 732 733 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 734 line, sizeof(line), NULL, 0, niflags) != 0) 735 strlcpy(line, "invalid", sizeof(line)); 736 break; 737 } 738 #endif 739 740 case AF_NS: 741 return (ns_print((struct sockaddr_ns *)sa)); 742 743 case AF_ISO: 744 (void)snprintf(line, sizeof line, "iso %s", 745 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 746 break; 747 748 case AF_APPLETALK: 749 (void) snprintf(line, sizeof(line), "atalk %d.%d", 750 ((struct sockaddr_at *)sa)->sat_addr.s_net, 751 ((struct sockaddr_at *)sa)->sat_addr.s_node); 752 break; 753 #endif /* SMALL */ 754 755 default: 756 (void)snprintf(line, sizeof line, "af %d: %s", 757 sa->sa_family, any_ntoa(sa)); 758 break; 759 } 760 return (line); 761 } 762 763 static void 764 set_metric(value, key) 765 char *value; 766 int key; 767 { 768 int flag = 0; 769 u_long noval, *valp = &noval; 770 771 switch (key) { 772 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 773 caseof(K_MTU, RTV_MTU, rmx_mtu); 774 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 775 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 776 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 777 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 778 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 779 caseof(K_RTT, RTV_RTT, rmx_rtt); 780 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 781 } 782 rtm_inits |= flag; 783 if (lockrest || locking) 784 rt_metrics.rmx_locks |= flag; 785 if (locking) 786 locking = 0; 787 *valp = atoi(value); 788 } 789 790 static int 791 newroute(argc, argv) 792 int argc; 793 char **argv; 794 { 795 char *cmd, *dest = "", *gateway = ""; 796 const char *error; 797 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 798 int key; 799 struct hostent *hp = 0; 800 801 cmd = argv[0]; 802 af = 0; 803 if (*cmd != 'g') 804 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 805 while (--argc > 0) { 806 if (**(++argv)== '-') { 807 switch (key = keyword(1 + *argv)) { 808 809 case K_SA: 810 af = PF_ROUTE; 811 aflen = sizeof(union sockunion); 812 break; 813 814 #ifndef SMALL 815 case K_ATALK: 816 af = AF_APPLETALK; 817 aflen = sizeof(struct sockaddr_at); 818 break; 819 #endif 820 821 case K_INET: 822 af = AF_INET; 823 aflen = sizeof(struct sockaddr_in); 824 break; 825 826 #ifdef INET6 827 case K_INET6: 828 af = AF_INET6; 829 aflen = sizeof(struct sockaddr_in6); 830 break; 831 #endif 832 833 case K_LINK: 834 af = AF_LINK; 835 aflen = sizeof(struct sockaddr_dl); 836 break; 837 838 #ifndef SMALL 839 case K_OSI: 840 case K_ISO: 841 af = AF_ISO; 842 aflen = sizeof(struct sockaddr_iso); 843 break; 844 845 case K_X25: 846 af = AF_CCITT; 847 aflen = sizeof(struct sockaddr_x25); 848 break; 849 850 case K_XNS: 851 af = AF_NS; 852 aflen = sizeof(struct sockaddr_ns); 853 break; 854 #endif /* SMALL */ 855 856 case K_IFACE: 857 case K_INTERFACE: 858 iflag++; 859 break; 860 case K_NOSTATIC: 861 flags &= ~RTF_STATIC; 862 break; 863 case K_LLINFO: 864 flags |= RTF_LLINFO; 865 break; 866 case K_LOCK: 867 locking = 1; 868 break; 869 case K_LOCKREST: 870 lockrest = 1; 871 break; 872 case K_HOST: 873 forcehost++; 874 break; 875 case K_REJECT: 876 flags |= RTF_REJECT; 877 break; 878 case K_BLACKHOLE: 879 flags |= RTF_BLACKHOLE; 880 break; 881 case K_CLONED: 882 flags |= RTF_CLONED; 883 break; 884 case K_PROTO1: 885 flags |= RTF_PROTO1; 886 break; 887 case K_PROTO2: 888 flags |= RTF_PROTO2; 889 break; 890 case K_CLONING: 891 flags |= RTF_CLONING; 892 break; 893 case K_XRESOLVE: 894 flags |= RTF_XRESOLVE; 895 break; 896 case K_STATIC: 897 flags |= RTF_STATIC; 898 break; 899 case K_IFA: 900 if (!--argc) 901 usage(1+*argv); 902 (void) getaddr(RTA_IFA, *++argv, 0); 903 break; 904 case K_IFP: 905 if (!--argc) 906 usage(1+*argv); 907 (void) getaddr(RTA_IFP, *++argv, 0); 908 break; 909 case K_GENMASK: 910 if (!--argc) 911 usage(1+*argv); 912 (void) getaddr(RTA_GENMASK, *++argv, 0); 913 break; 914 case K_GATEWAY: 915 if (!--argc) 916 usage(1+*argv); 917 (void) getaddr(RTA_GATEWAY, *++argv, 0); 918 break; 919 case K_DST: 920 if (!--argc) 921 usage(1+*argv); 922 ishost = getaddr(RTA_DST, *++argv, &hp); 923 dest = *argv; 924 break; 925 case K_NETMASK: 926 if (!--argc) 927 usage(1+*argv); 928 (void) getaddr(RTA_NETMASK, *++argv, 0); 929 /* FALLTHROUGH */ 930 case K_NET: 931 forcenet++; 932 break; 933 case K_PREFIXLEN: 934 if (!--argc) 935 usage(1+*argv); 936 ishost = prefixlen(*++argv); 937 break; 938 case K_MTU: 939 case K_HOPCOUNT: 940 case K_EXPIRE: 941 case K_RECVPIPE: 942 case K_SENDPIPE: 943 case K_SSTHRESH: 944 case K_RTT: 945 case K_RTTVAR: 946 if (!--argc) 947 usage(1+*argv); 948 set_metric(*++argv, key); 949 break; 950 default: 951 usage(1+*argv); 952 } 953 } else { 954 if ((rtm_addrs & RTA_DST) == 0) { 955 dest = *argv; 956 ishost = getaddr(RTA_DST, *argv, &hp); 957 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 958 gateway = *argv; 959 (void) getaddr(RTA_GATEWAY, *argv, &hp); 960 } else { 961 ret = atoi(*argv); 962 963 if (ret == 0) { 964 if (strcmp(*argv, "0") == 0) { 965 if (!qflag) { 966 warnx("%s, %s", 967 "old usage of trailing 0", 968 "assuming route to if"); 969 } 970 } else 971 usage((char *)NULL); 972 iflag = 1; 973 continue; 974 } else if (ret > 0 && ret < 10) { 975 if (!qflag) { 976 warnx("%s, %s", 977 "old usage of trailing digit", 978 "assuming route via gateway"); 979 } 980 iflag = 0; 981 continue; 982 } 983 (void) getaddr(RTA_NETMASK, *argv, 0); 984 } 985 } 986 } 987 if (forcehost && forcenet) 988 errx(1, "-host and -net conflict"); 989 else if (forcehost) 990 ishost = 1; 991 else if (forcenet) 992 ishost = 0; 993 flags |= RTF_UP; 994 if (ishost) 995 flags |= RTF_HOST; 996 if (iflag == 0) 997 flags |= RTF_GATEWAY; 998 for (attempts = 1; ; attempts++) { 999 errno = 0; 1000 if ((ret = rtmsg(*cmd, flags)) == 0) 1001 break; 1002 if (errno != ENETUNREACH && errno != ESRCH) 1003 break; 1004 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 1005 hp->h_addr_list++; 1006 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 1007 hp->h_length); 1008 } else 1009 break; 1010 } 1011 if (*cmd == 'g') 1012 return rv; 1013 oerrno = errno; 1014 if (!qflag) { 1015 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 1016 if (*gateway) { 1017 (void) printf(": gateway %s", gateway); 1018 if (attempts > 1 && ret == 0 && af == AF_INET) 1019 (void) printf(" (%s)", 1020 inet_ntoa(so_gate.sin.sin_addr)); 1021 } 1022 if (ret == 0) 1023 (void) printf("\n"); 1024 } 1025 if (ret != 0) { 1026 switch (oerrno) { 1027 case ESRCH: 1028 error = "not in table"; 1029 break; 1030 case EBUSY: 1031 error = "entry in use"; 1032 break; 1033 case ENOBUFS: 1034 error = "routing table overflow"; 1035 break; 1036 default: 1037 error = strerror(oerrno); 1038 break; 1039 } 1040 (void) printf(": %s\n", error); 1041 return 1; 1042 } 1043 return 0; 1044 } 1045 1046 static void 1047 inet_makenetandmask(u_int32_t net, struct sockaddr_in *isin) 1048 { 1049 u_int32_t addr, mask = 0; 1050 char *cp; 1051 1052 rtm_addrs |= RTA_NETMASK; 1053 if (net == 0) 1054 mask = addr = 0; 1055 else if (net < 128) { 1056 addr = net << IN_CLASSA_NSHIFT; 1057 mask = IN_CLASSA_NET; 1058 } else if (net < 192) { 1059 addr = net << IN_CLASSA_NSHIFT; 1060 mask = IN_CLASSB_NET; 1061 } else if (net < 224) { 1062 addr = net << IN_CLASSA_NSHIFT; 1063 mask = IN_CLASSC_NET; 1064 } else if (net < 256) { 1065 addr = net << IN_CLASSA_NSHIFT; 1066 mask = IN_CLASSD_NET; 1067 } else if (net < 49152) { /* 192 * 256 */ 1068 addr = net << IN_CLASSB_NSHIFT; 1069 mask = IN_CLASSB_NET; 1070 } else if (net < 57344) { /* 224 * 256 */ 1071 addr = net << IN_CLASSB_NSHIFT; 1072 mask = IN_CLASSC_NET; 1073 } else if (net < 65536) { 1074 addr = net << IN_CLASSB_NSHIFT; 1075 mask = IN_CLASSB_NET; 1076 } else if (net < 14680064L) { /* 224 * 65536 */ 1077 addr = net << IN_CLASSC_NSHIFT; 1078 mask = IN_CLASSC_NET; 1079 } else if (net < 16777216L) { 1080 addr = net << IN_CLASSC_NSHIFT; 1081 mask = IN_CLASSD_NET; 1082 } else { 1083 addr = net; 1084 if ((addr & IN_CLASSA_HOST) == 0) 1085 mask = IN_CLASSA_NET; 1086 else if ((addr & IN_CLASSB_HOST) == 0) 1087 mask = IN_CLASSB_NET; 1088 else if ((addr & IN_CLASSC_HOST) == 0) 1089 mask = IN_CLASSC_NET; 1090 else 1091 mask = -1; 1092 } 1093 isin->sin_addr.s_addr = htonl(addr); 1094 isin = &so_mask.sin; 1095 isin->sin_addr.s_addr = htonl(mask); 1096 isin->sin_len = 0; 1097 isin->sin_family = 0; 1098 cp = (char *)(&isin->sin_addr + 1); 1099 while (*--cp == 0 && cp > (char *)isin) 1100 ; 1101 isin->sin_len = 1 + cp - (char *)isin; 1102 } 1103 1104 #ifdef INET6 1105 /* 1106 * XXX the function may need more improvement... 1107 */ 1108 static int 1109 inet6_makenetandmask(sin6) 1110 struct sockaddr_in6 *sin6; 1111 { 1112 char *plen; 1113 struct in6_addr in6; 1114 1115 plen = NULL; 1116 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 1117 sin6->sin6_scope_id == 0) { 1118 plen = "0"; 1119 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 1120 /* aggregatable global unicast - RFC2374 */ 1121 memset(&in6, 0, sizeof(in6)); 1122 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 1123 plen = "64"; 1124 } 1125 1126 if (!plen || strcmp(plen, "128") == 0) 1127 return 1; 1128 else { 1129 rtm_addrs |= RTA_NETMASK; 1130 (void)prefixlen(plen); 1131 return 0; 1132 } 1133 } 1134 #endif 1135 1136 /* 1137 * Interpret an argument as a network address of some kind, 1138 * returning 1 if a host address, 0 if a network address. 1139 */ 1140 static int 1141 getaddr(which, s, hpp) 1142 int which; 1143 char *s; 1144 struct hostent **hpp; 1145 { 1146 sup su; 1147 struct hostent *hp; 1148 struct netent *np; 1149 u_int32_t val; 1150 char *t; 1151 int afamily; /* local copy of af so we can change it */ 1152 1153 if (af == 0) { 1154 af = AF_INET; 1155 aflen = sizeof(struct sockaddr_in); 1156 } 1157 afamily = af; 1158 rtm_addrs |= which; 1159 switch (which) { 1160 case RTA_DST: 1161 su = &so_dst; 1162 break; 1163 case RTA_GATEWAY: 1164 su = &so_gate; 1165 break; 1166 case RTA_NETMASK: 1167 su = &so_mask; 1168 break; 1169 case RTA_GENMASK: 1170 su = &so_genmask; 1171 break; 1172 case RTA_IFP: 1173 su = &so_ifp; 1174 afamily = AF_LINK; 1175 break; 1176 case RTA_IFA: 1177 su = &so_ifa; 1178 su->sa.sa_family = af; 1179 break; 1180 default: 1181 su = NULL; 1182 usage("Internal Error"); 1183 /*NOTREACHED*/ 1184 } 1185 su->sa.sa_len = aflen; 1186 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1187 if (strcmp(s, "default") == 0) { 1188 switch (which) { 1189 case RTA_DST: 1190 forcenet++; 1191 (void) getaddr(RTA_NETMASK, s, 0); 1192 break; 1193 case RTA_NETMASK: 1194 case RTA_GENMASK: 1195 su->sa.sa_len = 0; 1196 } 1197 return (0); 1198 } 1199 switch (afamily) { 1200 #ifndef SMALL 1201 #ifdef INET6 1202 case AF_INET6: 1203 { 1204 struct addrinfo hints, *res; 1205 char *slash = 0; 1206 1207 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 1208 *slash = '\0'; 1209 memset(&hints, 0, sizeof(hints)); 1210 hints.ai_family = afamily; /*AF_INET6*/ 1211 hints.ai_flags = AI_NUMERICHOST; 1212 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1213 if (getaddrinfo(s, "0", &hints, &res) != 0) { 1214 hints.ai_flags = 0; 1215 if (slash) { 1216 *slash = '/'; 1217 slash = 0; 1218 } 1219 if (getaddrinfo(s, "0", &hints, &res) != 0) { 1220 (void) fprintf(stderr, "%s: bad value\n", s); 1221 exit(1); 1222 } 1223 } 1224 if (slash) 1225 *slash = '/'; 1226 if (sizeof(su->sin6) != res->ai_addrlen) { 1227 (void) fprintf(stderr, "%s: bad value\n", s); 1228 exit(1); 1229 } 1230 if (res->ai_next) { 1231 (void) fprintf(stderr, 1232 "%s: resolved to multiple values\n", s); 1233 exit(1); 1234 } 1235 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1236 freeaddrinfo(res); 1237 #ifdef __KAME__ 1238 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1239 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1240 su->sin6.sin6_scope_id) { 1241 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1242 htons(su->sin6.sin6_scope_id); 1243 su->sin6.sin6_scope_id = 0; 1244 } 1245 #endif 1246 if (hints.ai_flags == AI_NUMERICHOST) { 1247 if (slash) 1248 return (prefixlen(slash + 1)); 1249 if (which == RTA_DST) 1250 return (inet6_makenetandmask(&su->sin6)); 1251 return (0); 1252 } else 1253 return (1); 1254 } 1255 #endif 1256 1257 case AF_NS: 1258 if (which == RTA_DST) { 1259 struct sockaddr_ns *sms = &(so_mask.sns); 1260 memset(sms, 0, sizeof(*sms)); 1261 sms->sns_family = 0; 1262 sms->sns_len = 6; 1263 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1264 rtm_addrs |= RTA_NETMASK; 1265 } 1266 su->sns.sns_addr = ns_addr(s); 1267 return (!ns_nullhost(su->sns.sns_addr)); 1268 1269 case AF_OSI: 1270 su->siso.siso_addr = *iso_addr(s); 1271 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1272 char *cp = (char *)TSEL(&su->siso); 1273 su->siso.siso_nlen = 0; 1274 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1275 su->siso.siso_len = 1 + cp - (char *)su; 1276 } 1277 return (1); 1278 1279 case AF_CCITT: 1280 ccitt_addr(s, &su->sx25); 1281 return (which == RTA_DST ? x25_makemask() : 1); 1282 #endif /* SMALL */ 1283 1284 case PF_ROUTE: 1285 su->sa.sa_len = sizeof(*su); 1286 sockaddr(s, &su->sa); 1287 return (1); 1288 1289 #ifndef SMALL 1290 case AF_APPLETALK: 1291 t = strchr (s, '.'); 1292 if (!t) { 1293 badataddr: 1294 errx(1, "bad address: %s", s); 1295 } 1296 val = atoi (s); 1297 if (val > 65535) 1298 goto badataddr; 1299 su->sat.sat_addr.s_net = val; 1300 val = atoi (t); 1301 if (val > 256) 1302 goto badataddr; 1303 su->sat.sat_addr.s_node = val; 1304 rtm_addrs |= RTA_NETMASK; 1305 return(forcehost || su->sat.sat_addr.s_node != 0); 1306 #endif 1307 1308 case AF_LINK: 1309 link_addr(s, &su->sdl); 1310 return (1); 1311 1312 case AF_INET: 1313 default: 1314 break; 1315 } 1316 1317 if (hpp == NULL) 1318 hpp = &hp; 1319 *hpp = NULL; 1320 1321 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 1322 *t = '\0'; 1323 if ((val = inet_addr(s)) != INADDR_NONE) { 1324 inet_makenetandmask(htonl(val), &su->sin); 1325 return prefixlen(&t[1]); 1326 } 1327 *t = '/'; 1328 } 1329 if (((val = inet_addr(s)) != INADDR_NONE) && 1330 (which != RTA_DST || forcenet == 0)) { 1331 su->sin.sin_addr.s_addr = val; 1332 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1333 return (1); 1334 else { 1335 val = ntohl(val); 1336 goto netdone; 1337 } 1338 } 1339 if ((val = inet_network(s)) != INADDR_NONE || 1340 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1341 netdone: 1342 if (which == RTA_DST) 1343 inet_makenetandmask(val, &su->sin); 1344 return (0); 1345 } 1346 hp = gethostbyname(s); 1347 if (hp) { 1348 *hpp = hp; 1349 su->sin.sin_family = hp->h_addrtype; 1350 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1351 return (1); 1352 } 1353 errx(1, "bad value: %s", s); 1354 } 1355 1356 int 1357 prefixlen(s) 1358 char *s; 1359 { 1360 int len = atoi(s), q, r; 1361 int max; 1362 1363 switch (af) { 1364 case AF_INET: 1365 max = sizeof(struct in_addr) * 8; 1366 break; 1367 #ifdef INET6 1368 case AF_INET6: 1369 max = sizeof(struct in6_addr) * 8; 1370 break; 1371 #endif 1372 default: 1373 (void) fprintf(stderr, 1374 "prefixlen is not supported with af %d\n", af); 1375 exit(1); 1376 } 1377 1378 rtm_addrs |= RTA_NETMASK; 1379 if (len < -1 || len > max) { 1380 (void) fprintf(stderr, "%s: bad value\n", s); 1381 exit(1); 1382 } 1383 1384 q = len >> 3; 1385 r = len & 7; 1386 switch (af) { 1387 case AF_INET: 1388 memset(&so_mask, 0, sizeof(so_mask)); 1389 so_mask.sin.sin_family = AF_INET; 1390 so_mask.sin.sin_len = sizeof(struct sockaddr_in); 1391 so_mask.sin.sin_addr.s_addr = htonl(0xffffffff << (32 - len)); 1392 break; 1393 #ifdef INET6 1394 case AF_INET6: 1395 so_mask.sin6.sin6_family = AF_INET6; 1396 so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1397 memset((void *)&so_mask.sin6.sin6_addr, 0, 1398 sizeof(so_mask.sin6.sin6_addr)); 1399 if (q > 0) 1400 memset((void *)&so_mask.sin6.sin6_addr, 0xff, q); 1401 if (r > 0) 1402 *((u_char *)&so_mask.sin6.sin6_addr + q) = 1403 (0xff00 >> r) & 0xff; 1404 break; 1405 #endif 1406 } 1407 return (len == max); 1408 } 1409 1410 #ifndef SMALL 1411 int 1412 x25_makemask() 1413 { 1414 char *cp; 1415 1416 if ((rtm_addrs & RTA_NETMASK) == 0) { 1417 rtm_addrs |= RTA_NETMASK; 1418 for (cp = (char *)&so_mask.sx25.x25_net; 1419 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1420 *cp = -1; 1421 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1422 } 1423 return 0; 1424 } 1425 1426 1427 char * 1428 ns_print(sns) 1429 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 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() 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 ((buf = malloc(needed)) == NULL) 1489 err(1, "malloc"); 1490 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1491 err(1, "actual retrieval of interface table"); 1492 lim = buf + needed; 1493 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1494 rtm = (struct rt_msghdr *)next; 1495 print_rtmsg(rtm, rtm->rtm_msglen); 1496 } 1497 } 1498 1499 static void 1500 monitor() 1501 { 1502 int n; 1503 char msg[2048]; 1504 1505 verbose = 1; 1506 if (debugonly) { 1507 interfaces(); 1508 exit(0); 1509 } 1510 for(;;) { 1511 time_t now; 1512 n = read(sock, msg, 2048); 1513 now = time(NULL); 1514 (void) printf("got message of size %d on %s", n, ctime(&now)); 1515 print_rtmsg((struct rt_msghdr *)msg, n); 1516 } 1517 } 1518 1519 #endif /* SMALL */ 1520 1521 1522 struct { 1523 struct rt_msghdr m_rtm; 1524 char m_space[512]; 1525 } m_rtmsg; 1526 1527 static int 1528 rtmsg(cmd, flags) 1529 int cmd, flags; 1530 { 1531 static int seq; 1532 int rlen; 1533 char *cp = m_rtmsg.m_space; 1534 int l; 1535 1536 #define NEXTADDR(w, u) \ 1537 if (rtm_addrs & (w)) {\ 1538 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1539 if (verbose && ! shortoutput) sodump(&(u),"u");\ 1540 } 1541 1542 errno = 0; 1543 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1544 if (cmd == 'a') 1545 cmd = RTM_ADD; 1546 else if (cmd == 'c') 1547 cmd = RTM_CHANGE; 1548 else if (cmd == 'g') { 1549 #ifdef SMALL 1550 return (-1); 1551 #else /* SMALL */ 1552 cmd = RTM_GET; 1553 if (so_ifp.sa.sa_family == 0) { 1554 so_ifp.sa.sa_family = AF_LINK; 1555 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1556 rtm_addrs |= RTA_IFP; 1557 } 1558 #endif /* SMALL */ 1559 } else 1560 cmd = RTM_DELETE; 1561 #define rtm m_rtmsg.m_rtm 1562 rtm.rtm_type = cmd; 1563 rtm.rtm_flags = flags; 1564 rtm.rtm_version = RTM_VERSION; 1565 rtm.rtm_seq = ++seq; 1566 rtm.rtm_addrs = rtm_addrs; 1567 rtm.rtm_rmx = rt_metrics; 1568 rtm.rtm_inits = rtm_inits; 1569 1570 if (rtm_addrs & RTA_NETMASK) 1571 mask_addr(); 1572 NEXTADDR(RTA_DST, so_dst); 1573 NEXTADDR(RTA_GATEWAY, so_gate); 1574 NEXTADDR(RTA_NETMASK, so_mask); 1575 NEXTADDR(RTA_GENMASK, so_genmask); 1576 NEXTADDR(RTA_IFP, so_ifp); 1577 NEXTADDR(RTA_IFA, so_ifa); 1578 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1579 if (verbose && ! shortoutput) 1580 print_rtmsg(&rtm, l); 1581 if (debugonly) 1582 return (0); 1583 if ((rlen = write(sock, (char *)&m_rtmsg, l)) < 0) { 1584 perror("writing to routing socket"); 1585 return (-1); 1586 } 1587 #ifndef SMALL 1588 if (cmd == RTM_GET) { 1589 do { 1590 l = read(sock, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1591 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1592 if (l < 0) 1593 err(1, "read from routing socket"); 1594 else 1595 print_getmsg(&rtm, l); 1596 } 1597 #endif /* SMALL */ 1598 #undef rtm 1599 return (0); 1600 } 1601 1602 static void 1603 mask_addr() 1604 { 1605 int olen = so_mask.sa.sa_len; 1606 char *cp1 = olen + (char *)&so_mask, *cp2; 1607 1608 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1609 if (*--cp1 != 0) { 1610 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1611 break; 1612 } 1613 if ((rtm_addrs & RTA_DST) == 0) 1614 return; 1615 switch (so_dst.sa.sa_family) { 1616 case AF_INET: 1617 #ifdef INET6 1618 case AF_INET6: 1619 #endif 1620 #ifndef SMALL 1621 case AF_APPLETALK: 1622 case AF_NS: 1623 case AF_CCITT: 1624 #endif /* SMALL */ 1625 case 0: 1626 return; 1627 #ifndef SMALL 1628 case AF_ISO: 1629 olen = MIN(so_dst.siso.siso_nlen, 1630 MAX(so_mask.sa.sa_len - 6, 0)); 1631 break; 1632 #endif /* SMALL */ 1633 } 1634 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1635 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1636 while (cp2 > cp1) 1637 *--cp2 = 0; 1638 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1639 while (cp1 > so_dst.sa.sa_data) 1640 *--cp1 &= *--cp2; 1641 #ifndef SMALL 1642 switch (so_dst.sa.sa_family) { 1643 case AF_ISO: 1644 so_dst.siso.siso_nlen = olen; 1645 break; 1646 } 1647 #endif /* SMALL */ 1648 } 1649 1650 char *msgtypes[] = { 1651 "", 1652 "RTM_ADD: Add Route", 1653 "RTM_DELETE: Delete Route", 1654 "RTM_CHANGE: Change Metrics or flags", 1655 "RTM_GET: Report Metrics", 1656 "RTM_LOSING: Kernel Suspects Partitioning", 1657 "RTM_REDIRECT: Told to use different route", 1658 "RTM_MISS: Lookup failed on this address", 1659 "RTM_LOCK: fix specified metrics", 1660 "RTM_OLDADD: caused by SIOCADDRT", 1661 "RTM_OLDDEL: caused by SIOCDELRT", 1662 "RTM_RESOLVE: Route created by cloning", 1663 "RTM_NEWADDR: address being added to iface", 1664 "RTM_DELADDR: address being removed from iface", 1665 "RTM_OIFINFO: iface status change (pre-1.5)", 1666 "RTM_IFINFO: iface status change", 1667 "RTM_IFANNOUNCE: iface arrival/departure", 1668 0, 1669 }; 1670 1671 char metricnames[] = 1672 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1673 char routeflags[] = 1674 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1675 char ifnetflags[] = 1676 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1677 char addrnames[] = 1678 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1679 1680 1681 #ifndef SMALL 1682 static const char * 1683 linkstate(ifm) 1684 struct if_msghdr *ifm; 1685 { 1686 static char buf[64]; 1687 1688 switch (ifm->ifm_data.ifi_link_state) { 1689 case LINK_STATE_UNKNOWN: 1690 return "carrier: unknown"; 1691 case LINK_STATE_DOWN: 1692 return "carrier: no carrier"; 1693 case LINK_STATE_UP: 1694 return "carrier: active"; 1695 default: 1696 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1697 ifm->ifm_data.ifi_link_state); 1698 return buf; 1699 } 1700 } 1701 #endif /* SMALL */ 1702 1703 static void 1704 print_rtmsg(rtm, msglen) 1705 struct rt_msghdr *rtm; 1706 int msglen; 1707 { 1708 struct if_msghdr *ifm; 1709 struct ifa_msghdr *ifam; 1710 struct if_announcemsghdr *ifan; 1711 1712 if (verbose == 0) 1713 return; 1714 if (rtm->rtm_version != RTM_VERSION) { 1715 (void) printf("routing message version %d not understood\n", 1716 rtm->rtm_version); 1717 return; 1718 } 1719 if (msgtypes[rtm->rtm_type]) 1720 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1721 else 1722 (void)printf("#%d: ", rtm->rtm_type); 1723 (void)printf("len %d, ", rtm->rtm_msglen); 1724 switch (rtm->rtm_type) { 1725 case RTM_IFINFO: 1726 ifm = (struct if_msghdr *)rtm; 1727 (void) printf("if# %d, %s, flags:", ifm->ifm_index, 1728 #ifdef SMALL 1729 "" 1730 #else 1731 linkstate(ifm) 1732 #endif /* SMALL */ 1733 ); 1734 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1735 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1736 break; 1737 case RTM_NEWADDR: 1738 case RTM_DELADDR: 1739 ifam = (struct ifa_msghdr *)rtm; 1740 (void) printf("metric %d, flags:", ifam->ifam_metric); 1741 bprintf(stdout, ifam->ifam_flags, routeflags); 1742 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1743 break; 1744 case RTM_IFANNOUNCE: 1745 ifan = (struct if_announcemsghdr *)rtm; 1746 (void) printf("if# %d, what: ", ifan->ifan_index); 1747 switch (ifan->ifan_what) { 1748 case IFAN_ARRIVAL: 1749 printf("arrival"); 1750 break; 1751 case IFAN_DEPARTURE: 1752 printf("departure"); 1753 break; 1754 default: 1755 printf("#%d", ifan->ifan_what); 1756 break; 1757 } 1758 printf("\n"); 1759 break; 1760 default: 1761 (void) printf("pid: %d, seq %d, errno %d, flags:", 1762 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1763 bprintf(stdout, rtm->rtm_flags, routeflags); 1764 pmsg_common(rtm); 1765 } 1766 } 1767 1768 #ifndef SMALL 1769 static void 1770 print_getmsg(rtm, msglen) 1771 struct rt_msghdr *rtm; 1772 int msglen; 1773 { 1774 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1775 struct sockaddr_dl *ifp = NULL; 1776 struct sockaddr *sa; 1777 char *cp; 1778 int i; 1779 1780 if (! shortoutput) 1781 (void) printf(" route to: %s\n", 1782 routename((struct sockaddr *) &so_dst, NULL, RTF_HOST)); 1783 if (rtm->rtm_version != RTM_VERSION) { 1784 warnx("routing message version %d not understood", 1785 rtm->rtm_version); 1786 return; 1787 } 1788 if (rtm->rtm_msglen > msglen) { 1789 warnx("message length mismatch, in packet %d, returned %d", 1790 rtm->rtm_msglen, msglen); 1791 } 1792 if (rtm->rtm_errno) { 1793 warn("RTM_GET"); 1794 return; 1795 } 1796 cp = ((char *)(rtm + 1)); 1797 if (rtm->rtm_addrs) 1798 for (i = 1; i; i <<= 1) 1799 if (i & rtm->rtm_addrs) { 1800 sa = (struct sockaddr *)cp; 1801 switch (i) { 1802 case RTA_DST: 1803 dst = sa; 1804 break; 1805 case RTA_GATEWAY: 1806 gate = sa; 1807 break; 1808 case RTA_NETMASK: 1809 mask = sa; 1810 break; 1811 case RTA_IFP: 1812 if (sa->sa_family == AF_LINK && 1813 ((struct sockaddr_dl *)sa)->sdl_nlen) 1814 ifp = (struct sockaddr_dl *)sa; 1815 break; 1816 case RTA_IFA: 1817 ifa = sa; 1818 break; 1819 } 1820 ADVANCE(cp, sa); 1821 } 1822 if (dst && mask) 1823 mask->sa_family = dst->sa_family; /* XXX */ 1824 if (dst && ! shortoutput) 1825 (void)printf("destination: %s\n", 1826 routename(dst, mask, RTF_HOST)); 1827 if (mask && ! shortoutput) { 1828 int savenflag = nflag; 1829 1830 nflag = 1; 1831 (void)printf(" mask: %s\n", 1832 routename(mask, NULL, RTF_HOST)); 1833 nflag = savenflag; 1834 } 1835 if (gate && rtm->rtm_flags & RTF_GATEWAY && ! shortoutput) 1836 (void)printf(" gateway: %s\n", 1837 routename(gate, NULL, RTF_HOST)); 1838 if (ifa && ! shortoutput) 1839 (void)printf(" local addr: %s\n", 1840 routename(ifa, NULL, RTF_HOST)); 1841 if (ifp && ! shortoutput) 1842 (void)printf(" interface: %.*s\n", 1843 ifp->sdl_nlen, ifp->sdl_data); 1844 if (! shortoutput) { 1845 (void)printf(" flags: "); 1846 bprintf(stdout, rtm->rtm_flags, routeflags); 1847 } 1848 1849 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1850 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1851 1852 if (! shortoutput) { 1853 (void) printf("\n%s\n", "\ 1854 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1855 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1856 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1857 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1858 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1859 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1860 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1861 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1862 if (rtm->rtm_rmx.rmx_expire) 1863 rtm->rtm_rmx.rmx_expire -= time(0); 1864 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1865 } 1866 #undef lock 1867 #undef msec 1868 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1869 1870 if ((rtm->rtm_addrs & RTF_GATEWAY) == 0) 1871 rv = 1; 1872 else { 1873 char *name; 1874 int addrs; 1875 1876 cp = (char *)(rtm + 1); 1877 addrs = rtm->rtm_addrs; 1878 1879 for (i = 1; i; i <<= 1) { 1880 sa = (struct sockaddr *)cp; 1881 if (i == RTF_GATEWAY) { 1882 name = routename(sa, NULL, RTF_HOST); 1883 if (name[0] == '\0') 1884 rv = 1; 1885 else if (shortoutput) 1886 printf("%s\n", name); 1887 } 1888 if (i & addrs) 1889 ADVANCE(cp, sa); 1890 } 1891 } 1892 1893 if (shortoutput) 1894 return; 1895 else if (verbose) 1896 pmsg_common(rtm); 1897 else if (rtm->rtm_addrs &~ RTA_IGN) { 1898 (void) printf("sockaddrs: "); 1899 bprintf(stdout, rtm->rtm_addrs, addrnames); 1900 putchar('\n'); 1901 } 1902 #undef RTA_IGN 1903 } 1904 #endif /* SMALL */ 1905 1906 void 1907 pmsg_common(rtm) 1908 struct rt_msghdr *rtm; 1909 { 1910 (void) printf("\nlocks: "); 1911 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1912 (void) printf(" inits: "); 1913 bprintf(stdout, rtm->rtm_inits, metricnames); 1914 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1915 } 1916 1917 static void 1918 pmsg_addrs(cp, addrs) 1919 char *cp; 1920 int addrs; 1921 { 1922 struct sockaddr *sa; 1923 int i; 1924 1925 if (addrs != 0) { 1926 (void) printf("\nsockaddrs: "); 1927 bprintf(stdout, addrs, addrnames); 1928 (void) putchar('\n'); 1929 for (i = 1; i; i <<= 1) 1930 if (i & addrs) { 1931 sa = (struct sockaddr *)cp; 1932 (void) printf(" %s", 1933 routename(sa, NULL, RTF_HOST)); 1934 ADVANCE(cp, sa); 1935 } 1936 } 1937 (void) putchar('\n'); 1938 (void) fflush(stdout); 1939 } 1940 1941 static void 1942 bprintf(fp, b, s) 1943 FILE *fp; 1944 int b; 1945 u_char *s; 1946 { 1947 int i; 1948 int gotsome = 0; 1949 1950 if (b == 0) 1951 return; 1952 while ((i = *s++) != 0) { 1953 if (b & (1 << (i-1))) { 1954 if (gotsome == 0) 1955 i = '<'; 1956 else 1957 i = ','; 1958 (void) putc(i, fp); 1959 gotsome = 1; 1960 for (; (i = *s) > 32; s++) 1961 (void) putc(i, fp); 1962 } else 1963 while (*s > 32) 1964 s++; 1965 } 1966 if (gotsome) 1967 (void) putc('>', fp); 1968 } 1969 1970 static int 1971 keyword(cp) 1972 char *cp; 1973 { 1974 struct keytab *kt = keywords; 1975 1976 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1977 kt++; 1978 return kt->kt_i; 1979 } 1980 1981 static void 1982 sodump(su, which) 1983 sup su; 1984 char *which; 1985 { 1986 #ifdef INET6 1987 char ntop_buf[NI_MAXHOST]; 1988 #endif 1989 1990 switch (su->sa.sa_family) { 1991 case AF_INET: 1992 (void) printf("%s: inet %s; ", 1993 which, inet_ntoa(su->sin.sin_addr)); 1994 break; 1995 #ifndef SMALL 1996 case AF_APPLETALK: 1997 (void) printf("%s: atalk %d.%d; ", 1998 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1999 break; 2000 #endif 2001 case AF_LINK: 2002 (void) printf("%s: link %s; ", 2003 which, link_ntoa(&su->sdl)); 2004 break; 2005 #ifndef SMALL 2006 #ifdef INET6 2007 case AF_INET6: 2008 (void) printf("%s: inet6 %s; ", 2009 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 2010 ntop_buf, sizeof(ntop_buf))); 2011 break; 2012 #endif 2013 case AF_ISO: 2014 (void) printf("%s: iso %s; ", 2015 which, iso_ntoa(&su->siso.siso_addr)); 2016 break; 2017 case AF_NS: 2018 (void) printf("%s: xns %s; ", 2019 which, ns_ntoa(su->sns.sns_addr)); 2020 break; 2021 #endif /* SMALL */ 2022 default: 2023 (void) printf("af %p: %s; ", 2024 which, any_ntoa(&su->sa)); 2025 } 2026 (void) fflush(stdout); 2027 } 2028 2029 /* States*/ 2030 #define VIRGIN 0 2031 #define GOTONE 1 2032 #define GOTTWO 2 2033 /* Inputs */ 2034 #define DIGIT (4*0) 2035 #define END (4*1) 2036 #define DELIM (4*2) 2037 2038 static void 2039 sockaddr(addr, sa) 2040 char *addr; 2041 struct sockaddr *sa; 2042 { 2043 char *cp = (char *)sa; 2044 int size = sa->sa_len; 2045 char *cplim = cp + size; 2046 int byte = 0, state = VIRGIN, new = 0; 2047 2048 (void) memset(cp, 0, size); 2049 cp++; 2050 do { 2051 if ((*addr >= '0') && (*addr <= '9')) { 2052 new = *addr - '0'; 2053 } else if ((*addr >= 'a') && (*addr <= 'f')) { 2054 new = *addr - 'a' + 10; 2055 } else if ((*addr >= 'A') && (*addr <= 'F')) { 2056 new = *addr - 'A' + 10; 2057 } else if (*addr == 0) 2058 state |= END; 2059 else 2060 state |= DELIM; 2061 addr++; 2062 switch (state /* | INPUT */) { 2063 case GOTTWO | DIGIT: 2064 *cp++ = byte; /*FALLTHROUGH*/ 2065 case VIRGIN | DIGIT: 2066 state = GOTONE; byte = new; continue; 2067 case GOTONE | DIGIT: 2068 state = GOTTWO; byte = new + (byte << 4); continue; 2069 default: /* | DELIM */ 2070 state = VIRGIN; *cp++ = byte; byte = 0; continue; 2071 case GOTONE | END: 2072 case GOTTWO | END: 2073 *cp++ = byte; /* FALLTHROUGH */ 2074 case VIRGIN | END: 2075 break; 2076 } 2077 break; 2078 } while (cp < cplim); 2079 sa->sa_len = cp - (char *)sa; 2080 } 2081
Indexes created Sat Sep 27 14:09:57 GMT 2025