route.c revision 1.68
1 /* $NetBSD: route.c,v 1.68 2003/08/07 10:04:38 agc 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 1.68 2003/08/07 10:04:38 agc 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[64]; 363 const char *in; 364 char *out; 365 int len; 366 367 len = sa->sa_len; 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 (void)strlcpy(line, inet_ntoa(in), sizeof(line)); 685 #endif /* XXX */ 686 } 687 break; 688 689 case AF_LINK: 690 return (link_ntoa((struct sockaddr_dl *)sa)); 691 692 #ifndef SMALL 693 #ifdef INET6 694 case AF_INET6: 695 { 696 struct sockaddr_in6 sin6; 697 int niflags; 698 699 #ifdef NI_WITHSCOPEID 700 niflags = NI_WITHSCOPEID; 701 #else 702 niflags = 0; 703 #endif 704 if (nflag) 705 niflags |= NI_NUMERICHOST; 706 memset(&sin6, 0, sizeof(sin6)); 707 memcpy(&sin6, sa, sa->sa_len); 708 sin6.sin6_len = sizeof(struct sockaddr_in6); 709 sin6.sin6_family = AF_INET6; 710 #ifdef __KAME__ 711 if (sa->sa_len == sizeof(struct sockaddr_in6) && 712 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 713 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 714 sin6.sin6_scope_id == 0) { 715 sin6.sin6_scope_id = 716 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 717 sin6.sin6_addr.s6_addr[2] = 0; 718 sin6.sin6_addr.s6_addr[3] = 0; 719 } 720 #endif 721 nml = netmask_length(nm, AF_INET6); 722 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 723 if (nml == 0) 724 strlcpy(line, "::", sizeof(line)); 725 else 726 /* noncontiguous never happens in ipv6 */ 727 snprintf(line, sizeof(line), "::/%d", nml); 728 } 729 730 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 731 line, sizeof(line), NULL, 0, niflags) != 0) 732 strlcpy(line, "invalid", sizeof(line)); 733 break; 734 } 735 #endif 736 737 case AF_NS: 738 return (ns_print((struct sockaddr_ns *)sa)); 739 740 case AF_ISO: 741 (void)snprintf(line, sizeof line, "iso %s", 742 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 743 break; 744 745 case AF_APPLETALK: 746 (void) snprintf(line, sizeof(line), "atalk %d.%d", 747 ((struct sockaddr_at *)sa)->sat_addr.s_net, 748 ((struct sockaddr_at *)sa)->sat_addr.s_node); 749 break; 750 #endif /* SMALL */ 751 752 default: 753 (void)snprintf(line, sizeof line, "af %d: %s", 754 sa->sa_family, any_ntoa(sa)); 755 break; 756 } 757 return (line); 758 } 759 760 static void 761 set_metric(value, key) 762 char *value; 763 int key; 764 { 765 int flag = 0; 766 u_long noval, *valp = &noval; 767 768 switch (key) { 769 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 770 caseof(K_MTU, RTV_MTU, rmx_mtu); 771 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 772 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 773 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 774 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 775 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 776 caseof(K_RTT, RTV_RTT, rmx_rtt); 777 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 778 } 779 rtm_inits |= flag; 780 if (lockrest || locking) 781 rt_metrics.rmx_locks |= flag; 782 if (locking) 783 locking = 0; 784 *valp = atoi(value); 785 } 786 787 static int 788 newroute(argc, argv) 789 int argc; 790 char **argv; 791 { 792 char *cmd, *dest = "", *gateway = ""; 793 const char *error; 794 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 795 int key; 796 struct hostent *hp = 0; 797 798 cmd = argv[0]; 799 af = 0; 800 if (*cmd != 'g') 801 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 802 while (--argc > 0) { 803 if (**(++argv)== '-') { 804 switch (key = keyword(1 + *argv)) { 805 806 case K_SA: 807 af = PF_ROUTE; 808 aflen = sizeof(union sockunion); 809 break; 810 811 #ifndef SMALL 812 case K_ATALK: 813 af = AF_APPLETALK; 814 aflen = sizeof(struct sockaddr_at); 815 break; 816 #endif 817 818 case K_INET: 819 af = AF_INET; 820 aflen = sizeof(struct sockaddr_in); 821 break; 822 823 #ifdef INET6 824 case K_INET6: 825 af = AF_INET6; 826 aflen = sizeof(struct sockaddr_in6); 827 break; 828 #endif 829 830 case K_LINK: 831 af = AF_LINK; 832 aflen = sizeof(struct sockaddr_dl); 833 break; 834 835 #ifndef SMALL 836 case K_OSI: 837 case K_ISO: 838 af = AF_ISO; 839 aflen = sizeof(struct sockaddr_iso); 840 break; 841 842 case K_X25: 843 af = AF_CCITT; 844 aflen = sizeof(struct sockaddr_x25); 845 break; 846 847 case K_XNS: 848 af = AF_NS; 849 aflen = sizeof(struct sockaddr_ns); 850 break; 851 #endif /* SMALL */ 852 853 case K_IFACE: 854 case K_INTERFACE: 855 iflag++; 856 break; 857 case K_NOSTATIC: 858 flags &= ~RTF_STATIC; 859 break; 860 case K_LLINFO: 861 flags |= RTF_LLINFO; 862 break; 863 case K_LOCK: 864 locking = 1; 865 break; 866 case K_LOCKREST: 867 lockrest = 1; 868 break; 869 case K_HOST: 870 forcehost++; 871 break; 872 case K_REJECT: 873 flags |= RTF_REJECT; 874 break; 875 case K_BLACKHOLE: 876 flags |= RTF_BLACKHOLE; 877 break; 878 case K_CLONED: 879 flags |= RTF_CLONED; 880 break; 881 case K_PROTO1: 882 flags |= RTF_PROTO1; 883 break; 884 case K_PROTO2: 885 flags |= RTF_PROTO2; 886 break; 887 case K_CLONING: 888 flags |= RTF_CLONING; 889 break; 890 case K_XRESOLVE: 891 flags |= RTF_XRESOLVE; 892 break; 893 case K_STATIC: 894 flags |= RTF_STATIC; 895 break; 896 case K_IFA: 897 if (!--argc) 898 usage(1+*argv); 899 (void) getaddr(RTA_IFA, *++argv, 0); 900 break; 901 case K_IFP: 902 if (!--argc) 903 usage(1+*argv); 904 (void) getaddr(RTA_IFP, *++argv, 0); 905 break; 906 case K_GENMASK: 907 if (!--argc) 908 usage(1+*argv); 909 (void) getaddr(RTA_GENMASK, *++argv, 0); 910 break; 911 case K_GATEWAY: 912 if (!--argc) 913 usage(1+*argv); 914 (void) getaddr(RTA_GATEWAY, *++argv, 0); 915 break; 916 case K_DST: 917 if (!--argc) 918 usage(1+*argv); 919 ishost = getaddr(RTA_DST, *++argv, &hp); 920 dest = *argv; 921 break; 922 case K_NETMASK: 923 if (!--argc) 924 usage(1+*argv); 925 (void) getaddr(RTA_NETMASK, *++argv, 0); 926 /* FALLTHROUGH */ 927 case K_NET: 928 forcenet++; 929 break; 930 case K_PREFIXLEN: 931 if (!--argc) 932 usage(1+*argv); 933 ishost = prefixlen(*++argv); 934 break; 935 case K_MTU: 936 case K_HOPCOUNT: 937 case K_EXPIRE: 938 case K_RECVPIPE: 939 case K_SENDPIPE: 940 case K_SSTHRESH: 941 case K_RTT: 942 case K_RTTVAR: 943 if (!--argc) 944 usage(1+*argv); 945 set_metric(*++argv, key); 946 break; 947 default: 948 usage(1+*argv); 949 } 950 } else { 951 if ((rtm_addrs & RTA_DST) == 0) { 952 dest = *argv; 953 ishost = getaddr(RTA_DST, *argv, &hp); 954 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 955 gateway = *argv; 956 (void) getaddr(RTA_GATEWAY, *argv, &hp); 957 } else { 958 ret = atoi(*argv); 959 960 if (ret == 0) { 961 if (strcmp(*argv, "0") == 0) { 962 if (!qflag) { 963 warnx("%s, %s", 964 "old usage of trailing 0", 965 "assuming route to if"); 966 } 967 } else 968 usage((char *)NULL); 969 iflag = 1; 970 continue; 971 } else if (ret > 0 && ret < 10) { 972 if (!qflag) { 973 warnx("%s, %s", 974 "old usage of trailing digit", 975 "assuming route via gateway"); 976 } 977 iflag = 0; 978 continue; 979 } 980 (void) getaddr(RTA_NETMASK, *argv, 0); 981 } 982 } 983 } 984 if (forcehost && forcenet) 985 errx(1, "-host and -net conflict"); 986 else if (forcehost) 987 ishost = 1; 988 else if (forcenet) 989 ishost = 0; 990 flags |= RTF_UP; 991 if (ishost) 992 flags |= RTF_HOST; 993 if (iflag == 0) 994 flags |= RTF_GATEWAY; 995 for (attempts = 1; ; attempts++) { 996 errno = 0; 997 if ((ret = rtmsg(*cmd, flags)) == 0) 998 break; 999 if (errno != ENETUNREACH && errno != ESRCH) 1000 break; 1001 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 1002 hp->h_addr_list++; 1003 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 1004 hp->h_length); 1005 } else 1006 break; 1007 } 1008 if (*cmd == 'g') 1009 return rv; 1010 oerrno = errno; 1011 if (!qflag) { 1012 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 1013 if (*gateway) { 1014 (void) printf(": gateway %s", gateway); 1015 if (attempts > 1 && ret == 0 && af == AF_INET) 1016 (void) printf(" (%s)", 1017 inet_ntoa(so_gate.sin.sin_addr)); 1018 } 1019 if (ret == 0) 1020 (void) printf("\n"); 1021 } 1022 if (ret != 0) { 1023 switch (oerrno) { 1024 case ESRCH: 1025 error = "not in table"; 1026 break; 1027 case EBUSY: 1028 error = "entry in use"; 1029 break; 1030 case ENOBUFS: 1031 error = "routing table overflow"; 1032 break; 1033 default: 1034 error = strerror(oerrno); 1035 break; 1036 } 1037 (void) printf(": %s\n", error); 1038 return 1; 1039 } 1040 return 0; 1041 } 1042 1043 static void 1044 inet_makenetandmask(u_int32_t net, struct sockaddr_in *isin) 1045 { 1046 u_int32_t addr, mask = 0; 1047 char *cp; 1048 1049 rtm_addrs |= RTA_NETMASK; 1050 if (net == 0) 1051 mask = addr = 0; 1052 else if (net < 128) { 1053 addr = net << IN_CLASSA_NSHIFT; 1054 mask = IN_CLASSA_NET; 1055 } else if (net < 192) { 1056 addr = net << IN_CLASSA_NSHIFT; 1057 mask = IN_CLASSB_NET; 1058 } else if (net < 224) { 1059 addr = net << IN_CLASSA_NSHIFT; 1060 mask = IN_CLASSC_NET; 1061 } else if (net < 256) { 1062 addr = net << IN_CLASSA_NSHIFT; 1063 mask = IN_CLASSD_NET; 1064 } else if (net < 49152) { /* 192 * 256 */ 1065 addr = net << IN_CLASSB_NSHIFT; 1066 mask = IN_CLASSB_NET; 1067 } else if (net < 57344) { /* 224 * 256 */ 1068 addr = net << IN_CLASSB_NSHIFT; 1069 mask = IN_CLASSC_NET; 1070 } else if (net < 65536) { /* XXX See above */ 1071 addr = net << IN_CLASSB_NSHIFT; 1072 mask = IN_CLASSB_NET; 1073 } else if (net < 14680064L) { /* 224 * 65536 */ 1074 addr = net << IN_CLASSC_NSHIFT; 1075 mask = IN_CLASSC_NET; 1076 } else if (net < 16777216L) { 1077 addr = net << IN_CLASSC_NSHIFT; 1078 mask = IN_CLASSD_NET; 1079 } else { 1080 addr = net; 1081 if ((addr & IN_CLASSA_HOST) == 0) 1082 mask = IN_CLASSA_NET; 1083 else if ((addr & IN_CLASSB_HOST) == 0) 1084 mask = IN_CLASSB_NET; 1085 else if ((addr & IN_CLASSC_HOST) == 0) 1086 mask = IN_CLASSC_NET; 1087 else 1088 mask = -1; 1089 } 1090 isin->sin_addr.s_addr = htonl(addr); 1091 isin = &so_mask.sin; 1092 isin->sin_addr.s_addr = htonl(mask); 1093 isin->sin_len = 0; 1094 isin->sin_family = 0; 1095 cp = (char *)(&isin->sin_addr + 1); 1096 while (*--cp == 0 && cp > (char *)isin) 1097 ; 1098 isin->sin_len = 1 + cp - (char *)isin; 1099 } 1100 1101 #ifdef INET6 1102 /* 1103 * XXX the function may need more improvement... 1104 */ 1105 static int 1106 inet6_makenetandmask(sin6) 1107 struct sockaddr_in6 *sin6; 1108 { 1109 char *plen; 1110 struct in6_addr in6; 1111 1112 plen = NULL; 1113 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 1114 sin6->sin6_scope_id == 0) { 1115 plen = "0"; 1116 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 1117 /* aggregatable global unicast - RFC2374 */ 1118 memset(&in6, 0, sizeof(in6)); 1119 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 1120 plen = "64"; 1121 } 1122 1123 if (!plen || strcmp(plen, "128") == 0) 1124 return 1; 1125 else { 1126 rtm_addrs |= RTA_NETMASK; 1127 (void)prefixlen(plen); 1128 return 0; 1129 } 1130 } 1131 #endif 1132 1133 /* 1134 * Interpret an argument as a network address of some kind, 1135 * returning 1 if a host address, 0 if a network address. 1136 */ 1137 static int 1138 getaddr(which, s, hpp) 1139 int which; 1140 char *s; 1141 struct hostent **hpp; 1142 { 1143 sup su; 1144 struct hostent *hp; 1145 struct netent *np; 1146 u_int32_t val; 1147 char *t; 1148 int afamily; /* local copy of af so we can change it */ 1149 1150 if (af == 0) { 1151 af = AF_INET; 1152 aflen = sizeof(struct sockaddr_in); 1153 } 1154 afamily = af; 1155 rtm_addrs |= which; 1156 switch (which) { 1157 case RTA_DST: 1158 su = &so_dst; 1159 break; 1160 case RTA_GATEWAY: 1161 su = &so_gate; 1162 break; 1163 case RTA_NETMASK: 1164 su = &so_mask; 1165 break; 1166 case RTA_GENMASK: 1167 su = &so_genmask; 1168 break; 1169 case RTA_IFP: 1170 su = &so_ifp; 1171 afamily = AF_LINK; 1172 break; 1173 case RTA_IFA: 1174 su = &so_ifa; 1175 su->sa.sa_family = af; 1176 break; 1177 default: 1178 su = NULL; 1179 usage("Internal Error"); 1180 /*NOTREACHED*/ 1181 } 1182 su->sa.sa_len = aflen; 1183 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1184 if (strcmp(s, "default") == 0) { 1185 switch (which) { 1186 case RTA_DST: 1187 forcenet++; 1188 (void) getaddr(RTA_NETMASK, s, 0); 1189 break; 1190 case RTA_NETMASK: 1191 case RTA_GENMASK: 1192 su->sa.sa_len = 0; 1193 } 1194 return (0); 1195 } 1196 switch (afamily) { 1197 #ifndef SMALL 1198 #ifdef INET6 1199 case AF_INET6: 1200 { 1201 struct addrinfo hints, *res; 1202 char *slash = 0; 1203 1204 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 1205 *slash = '\0'; 1206 memset(&hints, 0, sizeof(hints)); 1207 hints.ai_family = afamily; /*AF_INET6*/ 1208 hints.ai_flags = AI_NUMERICHOST; 1209 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1210 if (getaddrinfo(s, "0", &hints, &res) != 0) { 1211 hints.ai_flags = 0; 1212 if (slash) { 1213 *slash = '/'; 1214 slash = 0; 1215 } 1216 if (getaddrinfo(s, "0", &hints, &res) != 0) { 1217 (void) fprintf(stderr, "%s: bad value\n", s); 1218 exit(1); 1219 } 1220 } 1221 if (slash) 1222 *slash = '/'; 1223 if (sizeof(su->sin6) != res->ai_addrlen) { 1224 (void) fprintf(stderr, "%s: bad value\n", s); 1225 exit(1); 1226 } 1227 if (res->ai_next) { 1228 (void) fprintf(stderr, 1229 "%s: resolved to multiple values\n", s); 1230 exit(1); 1231 } 1232 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1233 freeaddrinfo(res); 1234 #ifdef __KAME__ 1235 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1236 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1237 su->sin6.sin6_scope_id) { 1238 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1239 htons(su->sin6.sin6_scope_id); 1240 su->sin6.sin6_scope_id = 0; 1241 } 1242 #endif 1243 if (hints.ai_flags == AI_NUMERICHOST) { 1244 if (slash) 1245 return (prefixlen(slash + 1)); 1246 if (which == RTA_DST) 1247 return (inet6_makenetandmask(&su->sin6)); 1248 return (0); 1249 } else 1250 return (1); 1251 } 1252 #endif 1253 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 ((val = inet_addr(s)) != INADDR_NONE) { 1321 inet_makenetandmask(htonl(val), &su->sin); 1322 return prefixlen(&t[1]); 1323 } 1324 *t = '/'; 1325 } 1326 if (((val = inet_addr(s)) != INADDR_NONE) && 1327 (which != RTA_DST || forcenet == 0)) { 1328 su->sin.sin_addr.s_addr = val; 1329 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1330 return (1); 1331 else { 1332 val = ntohl(val); 1333 goto netdone; 1334 } 1335 } 1336 if ((val = inet_network(s)) != INADDR_NONE || 1337 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1338 netdone: 1339 if (which == RTA_DST) 1340 inet_makenetandmask(val, &su->sin); 1341 return (0); 1342 } 1343 hp = gethostbyname(s); 1344 if (hp) { 1345 *hpp = hp; 1346 su->sin.sin_family = hp->h_addrtype; 1347 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1348 return (1); 1349 } 1350 errx(1, "bad value: %s", s); 1351 } 1352 1353 int 1354 prefixlen(s) 1355 char *s; 1356 { 1357 int len = atoi(s), q, r; 1358 int max; 1359 1360 switch (af) { 1361 case AF_INET: 1362 max = sizeof(struct in_addr) * 8; 1363 break; 1364 #ifdef INET6 1365 case AF_INET6: 1366 max = sizeof(struct in6_addr) * 8; 1367 break; 1368 #endif 1369 default: 1370 (void) fprintf(stderr, 1371 "prefixlen is not supported with af %d\n", af); 1372 exit(1); 1373 } 1374 1375 rtm_addrs |= RTA_NETMASK; 1376 if (len < -1 || len > max) { 1377 (void) fprintf(stderr, "%s: bad value\n", s); 1378 exit(1); 1379 } 1380 1381 q = len >> 3; 1382 r = len & 7; 1383 switch (af) { 1384 case AF_INET: 1385 memset(&so_mask, 0, sizeof(so_mask)); 1386 so_mask.sin.sin_family = AF_INET; 1387 so_mask.sin.sin_len = sizeof(struct sockaddr_in); 1388 so_mask.sin.sin_addr.s_addr = htonl(0xffffffff << (32 - len)); 1389 break; 1390 #ifdef INET6 1391 case AF_INET6: 1392 so_mask.sin6.sin6_family = AF_INET6; 1393 so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1394 memset((void *)&so_mask.sin6.sin6_addr, 0, 1395 sizeof(so_mask.sin6.sin6_addr)); 1396 if (q > 0) 1397 memset((void *)&so_mask.sin6.sin6_addr, 0xff, q); 1398 if (r > 0) 1399 *((u_char *)&so_mask.sin6.sin6_addr + q) = 1400 (0xff00 >> r) & 0xff; 1401 break; 1402 #endif 1403 } 1404 return (len == max); 1405 } 1406 1407 #ifndef SMALL 1408 int 1409 x25_makemask() 1410 { 1411 char *cp; 1412 1413 if ((rtm_addrs & RTA_NETMASK) == 0) { 1414 rtm_addrs |= RTA_NETMASK; 1415 for (cp = (char *)&so_mask.sx25.x25_net; 1416 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1417 *cp = -1; 1418 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1419 } 1420 return 0; 1421 } 1422 1423 1424 char * 1425 ns_print(sns) 1426 struct sockaddr_ns *sns; 1427 { 1428 struct ns_addr work; 1429 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1430 u_short port; 1431 static char mybuf[50], cport[10], chost[25]; 1432 char *host = ""; 1433 char *p; 1434 u_char *q; 1435 1436 work = sns->sns_addr; 1437 port = ntohs(work.x_port); 1438 work.x_port = 0; 1439 net.net_e = work.x_net; 1440 if (ns_nullhost(work) && net.int32_t_e == 0) { 1441 if (!port) 1442 return ("*.*"); 1443 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1444 return (mybuf); 1445 } 1446 1447 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1448 host = "any"; 1449 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1450 host = "*"; 1451 else { 1452 q = work.x_host.c_host; 1453 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1454 q[0], q[1], q[2], q[3], q[4], q[5]); 1455 for (p = chost; *p == '0' && p < chost + 12; p++) 1456 /* void */; 1457 host = p; 1458 } 1459 if (port) 1460 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1461 else 1462 *cport = 0; 1463 1464 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1465 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1466 return (mybuf); 1467 } 1468 1469 static void 1470 interfaces() 1471 { 1472 size_t needed; 1473 int mib[6]; 1474 char *buf, *lim, *next; 1475 struct rt_msghdr *rtm; 1476 1477 mib[0] = CTL_NET; 1478 mib[1] = PF_ROUTE; 1479 mib[2] = 0; /* protocol */ 1480 mib[3] = 0; /* wildcard address family */ 1481 mib[4] = NET_RT_IFLIST; 1482 mib[5] = 0; /* no flags */ 1483 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1484 err(1, "route-sysctl-estimate"); 1485 if ((buf = malloc(needed)) == NULL) 1486 err(1, "malloc"); 1487 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1488 err(1, "actual retrieval of interface table"); 1489 lim = buf + needed; 1490 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1491 rtm = (struct rt_msghdr *)next; 1492 print_rtmsg(rtm, rtm->rtm_msglen); 1493 } 1494 } 1495 1496 static void 1497 monitor() 1498 { 1499 int n; 1500 char msg[2048]; 1501 1502 verbose = 1; 1503 if (debugonly) { 1504 interfaces(); 1505 exit(0); 1506 } 1507 for(;;) { 1508 time_t now; 1509 n = read(sock, msg, 2048); 1510 now = time(NULL); 1511 (void) printf("got message of size %d on %s", n, ctime(&now)); 1512 print_rtmsg((struct rt_msghdr *)msg, n); 1513 } 1514 } 1515 1516 #endif /* SMALL */ 1517 1518 1519 struct { 1520 struct rt_msghdr m_rtm; 1521 char m_space[512]; 1522 } m_rtmsg; 1523 1524 static int 1525 rtmsg(cmd, flags) 1526 int cmd, flags; 1527 { 1528 static int seq; 1529 int rlen; 1530 char *cp = m_rtmsg.m_space; 1531 int l; 1532 1533 #define NEXTADDR(w, u) \ 1534 if (rtm_addrs & (w)) {\ 1535 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1536 if (verbose && ! shortoutput) sodump(&(u),"u");\ 1537 } 1538 1539 errno = 0; 1540 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1541 if (cmd == 'a') 1542 cmd = RTM_ADD; 1543 else if (cmd == 'c') 1544 cmd = RTM_CHANGE; 1545 else if (cmd == 'g') { 1546 #ifdef SMALL 1547 return (-1); 1548 #else /* SMALL */ 1549 cmd = RTM_GET; 1550 if (so_ifp.sa.sa_family == 0) { 1551 so_ifp.sa.sa_family = AF_LINK; 1552 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1553 rtm_addrs |= RTA_IFP; 1554 } 1555 #endif /* SMALL */ 1556 } else 1557 cmd = RTM_DELETE; 1558 #define rtm m_rtmsg.m_rtm 1559 rtm.rtm_type = cmd; 1560 rtm.rtm_flags = flags; 1561 rtm.rtm_version = RTM_VERSION; 1562 rtm.rtm_seq = ++seq; 1563 rtm.rtm_addrs = rtm_addrs; 1564 rtm.rtm_rmx = rt_metrics; 1565 rtm.rtm_inits = rtm_inits; 1566 1567 if (rtm_addrs & RTA_NETMASK) 1568 mask_addr(); 1569 NEXTADDR(RTA_DST, so_dst); 1570 NEXTADDR(RTA_GATEWAY, so_gate); 1571 NEXTADDR(RTA_NETMASK, so_mask); 1572 NEXTADDR(RTA_GENMASK, so_genmask); 1573 NEXTADDR(RTA_IFP, so_ifp); 1574 NEXTADDR(RTA_IFA, so_ifa); 1575 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1576 if (verbose && ! shortoutput) 1577 print_rtmsg(&rtm, l); 1578 if (debugonly) 1579 return (0); 1580 if ((rlen = write(sock, (char *)&m_rtmsg, l)) < 0) { 1581 perror("writing to routing socket"); 1582 return (-1); 1583 } 1584 #ifndef SMALL 1585 if (cmd == RTM_GET) { 1586 do { 1587 l = read(sock, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1588 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1589 if (l < 0) 1590 err(1, "read from routing socket"); 1591 else 1592 print_getmsg(&rtm, l); 1593 } 1594 #endif /* SMALL */ 1595 #undef rtm 1596 return (0); 1597 } 1598 1599 static void 1600 mask_addr() 1601 { 1602 int olen = so_mask.sa.sa_len; 1603 char *cp1 = olen + (char *)&so_mask, *cp2; 1604 1605 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1606 if (*--cp1 != 0) { 1607 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1608 break; 1609 } 1610 if ((rtm_addrs & RTA_DST) == 0) 1611 return; 1612 switch (so_dst.sa.sa_family) { 1613 case AF_INET: 1614 #ifdef INET6 1615 case AF_INET6: 1616 #endif 1617 #ifndef SMALL 1618 case AF_APPLETALK: 1619 case AF_NS: 1620 case AF_CCITT: 1621 #endif /* SMALL */ 1622 case 0: 1623 return; 1624 #ifndef SMALL 1625 case AF_ISO: 1626 olen = MIN(so_dst.siso.siso_nlen, 1627 MAX(so_mask.sa.sa_len - 6, 0)); 1628 break; 1629 #endif /* SMALL */ 1630 } 1631 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1632 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1633 while (cp2 > cp1) 1634 *--cp2 = 0; 1635 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1636 while (cp1 > so_dst.sa.sa_data) 1637 *--cp1 &= *--cp2; 1638 #ifndef SMALL 1639 switch (so_dst.sa.sa_family) { 1640 case AF_ISO: 1641 so_dst.siso.siso_nlen = olen; 1642 break; 1643 } 1644 #endif /* SMALL */ 1645 } 1646 1647 char *msgtypes[] = { 1648 "", 1649 "RTM_ADD: Add Route", 1650 "RTM_DELETE: Delete Route", 1651 "RTM_CHANGE: Change Metrics or flags", 1652 "RTM_GET: Report Metrics", 1653 "RTM_LOSING: Kernel Suspects Partitioning", 1654 "RTM_REDIRECT: Told to use different route", 1655 "RTM_MISS: Lookup failed on this address", 1656 "RTM_LOCK: fix specified metrics", 1657 "RTM_OLDADD: caused by SIOCADDRT", 1658 "RTM_OLDDEL: caused by SIOCDELRT", 1659 "RTM_RESOLVE: Route created by cloning", 1660 "RTM_NEWADDR: address being added to iface", 1661 "RTM_DELADDR: address being removed from iface", 1662 "RTM_OIFINFO: iface status change (pre-1.5)", 1663 "RTM_IFINFO: iface status change", 1664 "RTM_IFANNOUNCE: iface arrival/departure", 1665 0, 1666 }; 1667 1668 char metricnames[] = 1669 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1670 char routeflags[] = 1671 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1672 char ifnetflags[] = 1673 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1674 char addrnames[] = 1675 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1676 1677 1678 #ifndef SMALL 1679 static const char * 1680 linkstate(ifm) 1681 struct if_msghdr *ifm; 1682 { 1683 static char buf[64]; 1684 1685 switch (ifm->ifm_data.ifi_link_state) { 1686 case LINK_STATE_UNKNOWN: 1687 return "carrier: unknown"; 1688 case LINK_STATE_DOWN: 1689 return "carrier: no carrier"; 1690 case LINK_STATE_UP: 1691 return "carrier: active"; 1692 default: 1693 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1694 ifm->ifm_data.ifi_link_state); 1695 return buf; 1696 } 1697 } 1698 #endif /* SMALL */ 1699 1700 static void 1701 print_rtmsg(rtm, msglen) 1702 struct rt_msghdr *rtm; 1703 int msglen; 1704 { 1705 struct if_msghdr *ifm; 1706 struct ifa_msghdr *ifam; 1707 struct if_announcemsghdr *ifan; 1708 1709 if (verbose == 0) 1710 return; 1711 if (rtm->rtm_version != RTM_VERSION) { 1712 (void) printf("routing message version %d not understood\n", 1713 rtm->rtm_version); 1714 return; 1715 } 1716 if (msgtypes[rtm->rtm_type]) 1717 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1718 else 1719 (void)printf("#%d: ", rtm->rtm_type); 1720 (void)printf("len %d, ", rtm->rtm_msglen); 1721 switch (rtm->rtm_type) { 1722 case RTM_IFINFO: 1723 ifm = (struct if_msghdr *)rtm; 1724 (void) printf("if# %d, %s, flags:", ifm->ifm_index, 1725 #ifdef SMALL 1726 "" 1727 #else 1728 linkstate(ifm) 1729 #endif /* SMALL */ 1730 ); 1731 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1732 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1733 break; 1734 case RTM_NEWADDR: 1735 case RTM_DELADDR: 1736 ifam = (struct ifa_msghdr *)rtm; 1737 (void) printf("metric %d, flags:", ifam->ifam_metric); 1738 bprintf(stdout, ifam->ifam_flags, routeflags); 1739 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1740 break; 1741 case RTM_IFANNOUNCE: 1742 ifan = (struct if_announcemsghdr *)rtm; 1743 (void) printf("if# %d, what: ", ifan->ifan_index); 1744 switch (ifan->ifan_what) { 1745 case IFAN_ARRIVAL: 1746 printf("arrival"); 1747 break; 1748 case IFAN_DEPARTURE: 1749 printf("departure"); 1750 break; 1751 default: 1752 printf("#%d", ifan->ifan_what); 1753 break; 1754 } 1755 printf("\n"); 1756 break; 1757 default: 1758 (void) printf("pid: %d, seq %d, errno %d, flags:", 1759 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1760 bprintf(stdout, rtm->rtm_flags, routeflags); 1761 pmsg_common(rtm); 1762 } 1763 } 1764 1765 #ifndef SMALL 1766 static void 1767 print_getmsg(rtm, msglen) 1768 struct rt_msghdr *rtm; 1769 int msglen; 1770 { 1771 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1772 struct sockaddr_dl *ifp = NULL; 1773 struct sockaddr *sa; 1774 char *cp; 1775 int i; 1776 1777 if (! shortoutput) 1778 (void) printf(" route to: %s\n", 1779 routename((struct sockaddr *) &so_dst, NULL, RTF_HOST)); 1780 if (rtm->rtm_version != RTM_VERSION) { 1781 warnx("routing message version %d not understood", 1782 rtm->rtm_version); 1783 return; 1784 } 1785 if (rtm->rtm_msglen > msglen) { 1786 warnx("message length mismatch, in packet %d, returned %d", 1787 rtm->rtm_msglen, msglen); 1788 } 1789 if (rtm->rtm_errno) { 1790 warn("RTM_GET"); 1791 return; 1792 } 1793 cp = ((char *)(rtm + 1)); 1794 if (rtm->rtm_addrs) 1795 for (i = 1; i; i <<= 1) 1796 if (i & rtm->rtm_addrs) { 1797 sa = (struct sockaddr *)cp; 1798 switch (i) { 1799 case RTA_DST: 1800 dst = sa; 1801 break; 1802 case RTA_GATEWAY: 1803 gate = sa; 1804 break; 1805 case RTA_NETMASK: 1806 mask = sa; 1807 break; 1808 case RTA_IFP: 1809 if (sa->sa_family == AF_LINK && 1810 ((struct sockaddr_dl *)sa)->sdl_nlen) 1811 ifp = (struct sockaddr_dl *)sa; 1812 break; 1813 case RTA_IFA: 1814 ifa = sa; 1815 break; 1816 } 1817 ADVANCE(cp, sa); 1818 } 1819 if (dst && mask) 1820 mask->sa_family = dst->sa_family; /* XXX */ 1821 if (dst && ! shortoutput) 1822 (void)printf("destination: %s\n", 1823 routename(dst, mask, RTF_HOST)); 1824 if (mask && ! shortoutput) { 1825 int savenflag = nflag; 1826 1827 nflag = 1; 1828 (void)printf(" mask: %s\n", 1829 routename(mask, NULL, RTF_HOST)); 1830 nflag = savenflag; 1831 } 1832 if (gate && rtm->rtm_flags & RTF_GATEWAY && ! shortoutput) 1833 (void)printf(" gateway: %s\n", 1834 routename(gate, NULL, RTF_HOST)); 1835 if (ifa && ! shortoutput) 1836 (void)printf(" local addr: %s\n", 1837 routename(ifa, NULL, RTF_HOST)); 1838 if (ifp && ! shortoutput) 1839 (void)printf(" interface: %.*s\n", 1840 ifp->sdl_nlen, ifp->sdl_data); 1841 if (! shortoutput) { 1842 (void)printf(" flags: "); 1843 bprintf(stdout, rtm->rtm_flags, routeflags); 1844 } 1845 1846 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1847 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1848 1849 if (! shortoutput) { 1850 (void) printf("\n%s\n", "\ 1851 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1852 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1853 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1854 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1855 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1856 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1857 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1858 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1859 if (rtm->rtm_rmx.rmx_expire) 1860 rtm->rtm_rmx.rmx_expire -= time(0); 1861 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1862 } 1863 #undef lock 1864 #undef msec 1865 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1866 1867 if ((rtm->rtm_addrs & RTF_GATEWAY) == 0) 1868 rv = 1; 1869 else { 1870 char *name; 1871 int addrs; 1872 1873 cp = (char *)(rtm + 1); 1874 addrs = rtm->rtm_addrs; 1875 1876 for (i = 1; i; i <<= 1) { 1877 sa = (struct sockaddr *)cp; 1878 if (i == RTF_GATEWAY) { 1879 name = routename(sa, NULL, RTF_HOST); 1880 if (name[0] == '\0') 1881 rv = 1; 1882 else if (shortoutput) 1883 printf("%s\n", name); 1884 } 1885 if (i & addrs) 1886 ADVANCE(cp, sa); 1887 } 1888 } 1889 1890 if (shortoutput) 1891 return; 1892 else if (verbose) 1893 pmsg_common(rtm); 1894 else if (rtm->rtm_addrs &~ RTA_IGN) { 1895 (void) printf("sockaddrs: "); 1896 bprintf(stdout, rtm->rtm_addrs, addrnames); 1897 putchar('\n'); 1898 } 1899 #undef RTA_IGN 1900 } 1901 #endif /* SMALL */ 1902 1903 void 1904 pmsg_common(rtm) 1905 struct rt_msghdr *rtm; 1906 { 1907 (void) printf("\nlocks: "); 1908 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1909 (void) printf(" inits: "); 1910 bprintf(stdout, rtm->rtm_inits, metricnames); 1911 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1912 } 1913 1914 static void 1915 pmsg_addrs(cp, addrs) 1916 char *cp; 1917 int addrs; 1918 { 1919 struct sockaddr *sa; 1920 int i; 1921 1922 if (addrs != 0) { 1923 (void) printf("\nsockaddrs: "); 1924 bprintf(stdout, addrs, addrnames); 1925 (void) putchar('\n'); 1926 for (i = 1; i; i <<= 1) 1927 if (i & addrs) { 1928 sa = (struct sockaddr *)cp; 1929 (void) printf(" %s", 1930 routename(sa, NULL, RTF_HOST)); 1931 ADVANCE(cp, sa); 1932 } 1933 } 1934 (void) putchar('\n'); 1935 (void) fflush(stdout); 1936 } 1937 1938 static void 1939 bprintf(fp, b, s) 1940 FILE *fp; 1941 int b; 1942 u_char *s; 1943 { 1944 int i; 1945 int gotsome = 0; 1946 1947 if (b == 0) 1948 return; 1949 while ((i = *s++) != 0) { 1950 if (b & (1 << (i-1))) { 1951 if (gotsome == 0) 1952 i = '<'; 1953 else 1954 i = ','; 1955 (void) putc(i, fp); 1956 gotsome = 1; 1957 for (; (i = *s) > 32; s++) 1958 (void) putc(i, fp); 1959 } else 1960 while (*s > 32) 1961 s++; 1962 } 1963 if (gotsome) 1964 (void) putc('>', fp); 1965 } 1966 1967 static int 1968 keyword(cp) 1969 char *cp; 1970 { 1971 struct keytab *kt = keywords; 1972 1973 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1974 kt++; 1975 return kt->kt_i; 1976 } 1977 1978 static void 1979 sodump(su, which) 1980 sup su; 1981 char *which; 1982 { 1983 #ifdef INET6 1984 char ntop_buf[NI_MAXHOST]; 1985 #endif 1986 1987 switch (su->sa.sa_family) { 1988 case AF_INET: 1989 (void) printf("%s: inet %s; ", 1990 which, inet_ntoa(su->sin.sin_addr)); 1991 break; 1992 #ifndef SMALL 1993 case AF_APPLETALK: 1994 (void) printf("%s: atalk %d.%d; ", 1995 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1996 break; 1997 #endif 1998 case AF_LINK: 1999 (void) printf("%s: link %s; ", 2000 which, link_ntoa(&su->sdl)); 2001 break; 2002 #ifndef SMALL 2003 #ifdef INET6 2004 case AF_INET6: 2005 (void) printf("%s: inet6 %s; ", 2006 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 2007 ntop_buf, sizeof(ntop_buf))); 2008 break; 2009 #endif 2010 case AF_ISO: 2011 (void) printf("%s: iso %s; ", 2012 which, iso_ntoa(&su->siso.siso_addr)); 2013 break; 2014 case AF_NS: 2015 (void) printf("%s: xns %s; ", 2016 which, ns_ntoa(su->sns.sns_addr)); 2017 break; 2018 #endif /* SMALL */ 2019 default: 2020 (void) printf("af %p: %s; ", 2021 which, any_ntoa(&su->sa)); 2022 } 2023 (void) fflush(stdout); 2024 } 2025 2026 /* States*/ 2027 #define VIRGIN 0 2028 #define GOTONE 1 2029 #define GOTTWO 2 2030 /* Inputs */ 2031 #define DIGIT (4*0) 2032 #define END (4*1) 2033 #define DELIM (4*2) 2034 2035 static void 2036 sockaddr(addr, sa) 2037 char *addr; 2038 struct sockaddr *sa; 2039 { 2040 char *cp = (char *)sa; 2041 int size = sa->sa_len; 2042 char *cplim = cp + size; 2043 int byte = 0, state = VIRGIN, new = 0; 2044 2045 (void) memset(cp, 0, size); 2046 cp++; 2047 do { 2048 if ((*addr >= '0') && (*addr <= '9')) { 2049 new = *addr - '0'; 2050 } else if ((*addr >= 'a') && (*addr <= 'f')) { 2051 new = *addr - 'a' + 10; 2052 } else if ((*addr >= 'A') && (*addr <= 'F')) { 2053 new = *addr - 'A' + 10; 2054 } else if (*addr == 0) 2055 state |= END; 2056 else 2057 state |= DELIM; 2058 addr++; 2059 switch (state /* | INPUT */) { 2060 case GOTTWO | DIGIT: 2061 *cp++ = byte; /*FALLTHROUGH*/ 2062 case VIRGIN | DIGIT: 2063 state = GOTONE; byte = new; continue; 2064 case GOTONE | DIGIT: 2065 state = GOTTWO; byte = new + (byte << 4); continue; 2066 default: /* | DELIM */ 2067 state = VIRGIN; *cp++ = byte; byte = 0; continue; 2068 case GOTONE | END: 2069 case GOTTWO | END: 2070 *cp++ = byte; /* FALLTHROUGH */ 2071 case VIRGIN | END: 2072 break; 2073 } 2074 break; 2075 } while (cp < cplim); 2076 sa->sa_len = cp - (char *)sa; 2077 } 2078
Indexes created Sat Sep 27 22:09:54 GMT 2025