route.c revision 1.67
1 /* $NetBSD: route.c,v 1.67 2003/07/19 01:36:47 jrf 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1991, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)route.c 8.6 (Berkeley) 4/28/95"; 45 #else 46 __RCSID("$NetBSD: route.c,v 1.67 2003/07/19 01:36:47 jrf Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/file.h> 52 #include <sys/socket.h> 53 #include <sys/ioctl.h> 54 #include <sys/mbuf.h> 55 #include <sys/sysctl.h> 56 57 #include <net/if.h> 58 #include <net/route.h> 59 #include <net/if_dl.h> 60 #include <netinet/in.h> 61 #include <netatalk/at.h> 62 #include <netns/ns.h> 63 #include <netiso/iso.h> 64 #include <netccitt/x25.h> 65 #include <arpa/inet.h> 66 #include <netdb.h> 67 68 #include <errno.h> 69 #include <unistd.h> 70 #include <stdio.h> 71 #include <ctype.h> 72 #include <stdlib.h> 73 #include <string.h> 74 #include <time.h> 75 #include <paths.h> 76 #include <err.h> 77 78 #include "keywords.h" 79 #include "extern.h" 80 81 typedef union sockunion *sup; 82 83 int main __P((int, char **)); 84 static void usage __P((char *)) __attribute__((__noreturn__)); 85 static char *any_ntoa __P((const struct sockaddr *)); 86 static void set_metric __P((char *, int)); 87 static int newroute __P((int, char **)); 88 static void inet_makenetandmask __P((u_int32_t, struct sockaddr_in *)); 89 #ifdef INET6 90 static int inet6_makenetandmask __P((struct sockaddr_in6 *)); 91 #endif 92 static int getaddr __P((int, char *, struct hostent **)); 93 static int flushroutes __P((int, char *[], int)); 94 #ifndef SMALL 95 static int prefixlen __P((char *)); 96 static int x25_makemask __P((void)); 97 static void interfaces __P((void)); 98 static void monitor __P((void)); 99 static void print_getmsg __P((struct rt_msghdr *, int)); 100 static const char *linkstate __P((struct if_msghdr *)); 101 #endif /* SMALL */ 102 static int rtmsg __P((int, int )); 103 static void mask_addr __P((void)); 104 static void print_rtmsg __P((struct rt_msghdr *, int)); 105 static void pmsg_common __P((struct rt_msghdr *)); 106 static void pmsg_addrs __P((char *, int)); 107 static void bprintf __P((FILE *, int, u_char *)); 108 static int keyword __P((char *)); 109 static void sodump __P((sup, char *)); 110 static void sockaddr __P((char *, struct sockaddr *)); 111 112 union sockunion { 113 struct sockaddr sa; 114 struct sockaddr_in sin; 115 #ifdef INET6 116 struct sockaddr_in6 sin6; 117 #endif 118 struct sockaddr_at sat; 119 struct sockaddr_dl sdl; 120 #ifndef SMALL 121 struct sockaddr_ns sns; 122 struct sockaddr_iso siso; 123 struct sockaddr_x25 sx25; 124 #endif /* SMALL */ 125 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 126 127 int pid, rtm_addrs; 128 int sock; 129 int forcehost, forcenet, doflush, nflag, af, qflag, tflag; 130 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 131 int locking, lockrest, debugonly, shortoutput, rv; 132 struct rt_metrics rt_metrics; 133 u_int32_t rtm_inits; 134 short ns_nullh[] = {0,0,0}; 135 short ns_bh[] = {-1,-1,-1}; 136 137 138 static void 139 usage(cp) 140 char *cp; 141 { 142 143 if (cp) 144 warnx("botched keyword: %s", cp); 145 (void) fprintf(stderr, 146 "Usage: %s [ -fnqvs ] cmd [[ -<qualifers> ] args ]\n", 147 getprogname()); 148 exit(1); 149 /* NOTREACHED */ 150 } 151 152 #define ROUNDUP(a) \ 153 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 154 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 155 156 int 157 main(argc, argv) 158 int argc; 159 char **argv; 160 { 161 int ch; 162 163 if (argc < 2) 164 usage(NULL); 165 166 while ((ch = getopt(argc, argv, "fnqvdts")) != -1) 167 switch(ch) { 168 case 'f': 169 doflush = 1; 170 break; 171 case 'n': 172 nflag = 1; 173 break; 174 case 'q': 175 qflag = 1; 176 break; 177 case 'v': 178 verbose = 1; 179 break; 180 case 't': 181 tflag = 1; 182 break; 183 case 'd': 184 debugonly = 1; 185 break; 186 case 's': 187 shortoutput = 1; 188 break; 189 case '?': 190 default: 191 usage(NULL); 192 /*NOTREACHED*/ 193 } 194 argc -= optind; 195 argv += optind; 196 197 pid = getpid(); 198 if (tflag) 199 sock = open("/dev/null", O_WRONLY, 0); 200 else 201 sock = socket(PF_ROUTE, SOCK_RAW, 0); 202 if (sock < 0) 203 err(1, "socket"); 204 205 if (*argv == NULL) { 206 if (doflush) 207 ch = K_FLUSH; 208 else 209 goto no_cmd; 210 } else 211 ch = keyword(*argv); 212 213 switch (ch) { 214 #ifndef SMALL 215 case K_GET: 216 #endif /* SMALL */ 217 case K_CHANGE: 218 case K_ADD: 219 case K_DELETE: 220 if (doflush) 221 (void)flushroutes(1, argv, 0); 222 return newroute(argc, argv); 223 224 case K_SHOW: 225 show(argc, argv); 226 return 0; 227 228 #ifndef SMALL 229 case K_MONITOR: 230 monitor(); 231 return 0; 232 233 #endif /* SMALL */ 234 case K_FLUSH: 235 return flushroutes(argc, argv, 0); 236 237 case K_FLUSHALL: 238 return flushroutes(argc, argv, 1); 239 no_cmd: 240 default: 241 usage(*argv); 242 /*NOTREACHED*/ 243 } 244 } 245 246 /* 247 * Purge all entries in the routing tables not 248 * associated with network interfaces. 249 */ 250 static int 251 flushroutes(argc, argv, doall) 252 int argc; 253 char *argv[]; 254 int doall; 255 { 256 size_t needed; 257 int mib[6], rlen, seqno; 258 char *buf, *next, *lim; 259 struct rt_msghdr *rtm; 260 261 af = 0; 262 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 263 if (argc > 1) { 264 argv++; 265 if (argc == 2 && **argv == '-') 266 switch (keyword(*argv + 1)) { 267 case K_INET: 268 af = AF_INET; 269 break; 270 #ifdef INET6 271 case K_INET6: 272 af = AF_INET6; 273 break; 274 #endif 275 #ifndef SMALL 276 case K_ATALK: 277 af = AF_APPLETALK; 278 break; 279 case K_XNS: 280 af = AF_NS; 281 break; 282 #endif /* SMALL */ 283 case K_LINK: 284 af = AF_LINK; 285 break; 286 #ifndef SMALL 287 case K_ISO: 288 case K_OSI: 289 af = AF_ISO; 290 break; 291 case K_X25: 292 af = AF_CCITT; 293 #endif /* SMALL */ 294 default: 295 goto bad; 296 } else 297 bad: usage(*argv); 298 } 299 mib[0] = CTL_NET; 300 mib[1] = PF_ROUTE; 301 mib[2] = 0; /* protocol */ 302 mib[3] = 0; /* wildcard address family */ 303 mib[4] = NET_RT_DUMP; 304 mib[5] = 0; /* no flags */ 305 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 306 err(1, "route-sysctl-estimate"); 307 if (needed == 0) 308 return 0; 309 if ((buf = malloc(needed)) == NULL) 310 err(1, "malloc"); 311 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 312 err(1, "actual retrieval of routing table"); 313 lim = buf + needed; 314 if (verbose) { 315 (void) printf("Examining routing table from sysctl\n"); 316 if (af) printf("(address family %s)\n", (*argv + 1)); 317 } 318 seqno = 0; /* ??? */ 319 for (next = buf; next < lim; next += rtm->rtm_msglen) { 320 rtm = (struct rt_msghdr *)next; 321 if (verbose) 322 print_rtmsg(rtm, rtm->rtm_msglen); 323 if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC | 324 RTF_LLINFO)) && !doall) 325 continue; 326 if (af) { 327 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 328 329 if (sa->sa_family != af) 330 continue; 331 } 332 if (debugonly) 333 continue; 334 rtm->rtm_type = RTM_DELETE; 335 rtm->rtm_seq = seqno; 336 rlen = write(sock, next, rtm->rtm_msglen); 337 if (rlen < (int)rtm->rtm_msglen) { 338 warn("write to routing socket, got %d for rlen", rlen); 339 break; 340 } 341 seqno++; 342 if (qflag) 343 continue; 344 if (verbose) 345 print_rtmsg(rtm, rlen); 346 else { 347 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 348 (void) printf("%-20.20s ", 349 routename(sa, NULL, rtm->rtm_flags)); 350 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 351 (void) printf("%-20.20s ", 352 routename(sa, NULL, RTF_HOST)); 353 (void) printf("done\n"); 354 } 355 } 356 return 0; 357 } 358 359 360 static char hexlist[] = "0123456789abcdef"; 361 362 static char * 363 any_ntoa(sa) 364 const struct sockaddr *sa; 365 { 366 static char obuf[64]; 367 const char *in; 368 char *out; 369 int len; 370 371 len = sa->sa_len; 372 in = sa->sa_data; 373 out = obuf; 374 375 do { 376 *out++ = hexlist[(*in >> 4) & 15]; 377 *out++ = hexlist[(*in++) & 15]; 378 *out++ = '.'; 379 } while (--len > 0); 380 out[-1] = '\0'; 381 return obuf; 382 } 383 384 385 int 386 netmask_length(nm, family) 387 struct sockaddr *nm; 388 int family; 389 { 390 static int 391 /* number of bits in a nibble */ 392 _t[] = { 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4 }, 393 /* good nibbles are 1111, 1110, 1100, 1000, 0000 */ 394 _g[] = { 1,0,0,0,0,0,0,0,1,0,0,0,1,0,1,1 }; 395 int mask, good, zeroes, maskbytes, bit, i; 396 unsigned char *maskdata; 397 398 if (nm == NULL) 399 return 0; 400 401 mask = 0; 402 good = 1; 403 zeroes = 0; 404 405 switch (family) { 406 case AF_INET: { 407 struct sockaddr_in *nsin = (struct sockaddr_in *)nm; 408 maskdata = (unsigned char *) &nsin->sin_addr; 409 maskbytes = nsin->sin_len - 410 ((caddr_t)&nsin->sin_addr - (caddr_t)nsin); 411 break; 412 } 413 case AF_INET6: { 414 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nm; 415 maskdata = (unsigned char *) &sin6->sin6_addr; 416 maskbytes = sin6->sin6_len - 417 ((caddr_t)&sin6->sin6_addr - (caddr_t)sin6); 418 break; 419 } 420 default: 421 return 0; 422 } 423 424 /* 425 * Count the bits in the nibbles of the mask, and marking the 426 * netmask as not good (or at best, non-standard and very 427 * discouraged, in the case of AF_INET) if we find either of 428 * a nibble with non-contiguous bits, or a non-zero nibble 429 * after we've found a zero nibble. 430 */ 431 for (i = 0; i < maskbytes; i++) { 432 /* high nibble */ 433 mask += bit = _t[maskdata[i] >> 4]; 434 good &= _g[maskdata[i] >> 4]; 435 if (zeroes && bit) 436 good = 0; 437 if (bit == 0) 438 zeroes = 1; 439 /* low nibble */ 440 mask += bit = _t[maskdata[i] & 0xf]; 441 good &= _g[maskdata[i] & 0xf]; 442 if (zeroes && bit) 443 good = 0; 444 if (bit == 0) 445 zeroes = 1; 446 } 447 448 /* 449 * Always return the number of bits found, but as a negative 450 * if the mask wasn't one we like. 451 */ 452 return good ? mask : -mask; 453 } 454 455 char * 456 netmask_string(mask, len) 457 struct sockaddr *mask; 458 int len; 459 { 460 static char smask[16]; 461 462 if (len >= 0) 463 snprintf(smask, sizeof(smask), "%d", len); 464 else { 465 /* XXX AF_INET only?! */ 466 struct sockaddr_in nsin; 467 468 memset(&nsin, 0, sizeof(nsin)); 469 memcpy(&nsin, mask, mask->sa_len); 470 snprintf(smask, sizeof(smask), "%s", inet_ntoa(nsin.sin_addr)); 471 } 472 473 return smask; 474 } 475 476 477 char * 478 routename(sa, nm, flags) 479 struct sockaddr *sa, *nm; 480 int flags; 481 { 482 char *cp; 483 static char line[50]; 484 struct hostent *hp; 485 static char domain[MAXHOSTNAMELEN + 1]; 486 static int first = 1; 487 struct in_addr in; 488 int nml; 489 490 if ((flags & RTF_HOST) == 0) 491 return netname(sa, nm); 492 493 if (first) { 494 first = 0; 495 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 496 (cp = strchr(domain, '.'))) 497 (void)strlcpy(domain, cp + 1, sizeof(domain)); 498 else 499 domain[0] = 0; 500 } 501 502 if (sa->sa_len == 0) 503 strlcpy(line, "default", sizeof(line)); 504 else switch (sa->sa_family) { 505 506 case AF_INET: 507 in = ((struct sockaddr_in *)sa)->sin_addr; 508 nml = netmask_length(nm, AF_INET); 509 510 cp = 0; 511 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) { 512 if (nml == 0) 513 cp = "default"; 514 else { 515 static char notdefault[sizeof(NOTDEFSTRING)]; 516 517 snprintf(notdefault, sizeof(notdefault), 518 "0.0.0.0/%s", netmask_string(nm, nml)); 519 cp = notdefault; 520 } 521 } 522 if (cp == 0 && !nflag) { 523 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 524 AF_INET); 525 if (hp) { 526 if ((cp = strchr(hp->h_name, '.')) && 527 !strcmp(cp + 1, domain)) 528 *cp = 0; 529 cp = hp->h_name; 530 } 531 } 532 if (cp) 533 (void)strlcpy(line, cp, sizeof(line)); 534 else 535 (void)strlcpy(line, inet_ntoa(in), sizeof(line)); 536 break; 537 538 case AF_LINK: 539 return (link_ntoa((struct sockaddr_dl *)sa)); 540 541 #ifndef SMALL 542 #ifdef INET6 543 case AF_INET6: 544 { 545 struct sockaddr_in6 sin6; 546 int niflags; 547 548 #ifdef NI_WITHSCOPEID 549 niflags = NI_WITHSCOPEID; 550 #else 551 niflags = 0; 552 #endif 553 if (nflag) 554 niflags |= NI_NUMERICHOST; 555 memset(&sin6, 0, sizeof(sin6)); 556 memcpy(&sin6, sa, sa->sa_len); 557 sin6.sin6_len = sizeof(struct sockaddr_in6); 558 sin6.sin6_family = AF_INET6; 559 #ifdef __KAME__ 560 if (sa->sa_len == sizeof(struct sockaddr_in6) && 561 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 562 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 563 sin6.sin6_scope_id == 0) { 564 sin6.sin6_scope_id = 565 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 566 sin6.sin6_addr.s6_addr[2] = 0; 567 sin6.sin6_addr.s6_addr[3] = 0; 568 } 569 #endif 570 nml = netmask_length(nm, AF_INET6); 571 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 572 if (nml == 0) 573 strlcpy(line, "::", sizeof(line)); 574 else 575 /* noncontiguous never happens in ipv6 */ 576 snprintf(line, sizeof(line), "::/%d", nml); 577 } 578 579 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 580 line, sizeof(line), NULL, 0, niflags) != 0) 581 strlcpy(line, "invalid", sizeof(line)); 582 break; 583 } 584 #endif 585 586 case AF_NS: 587 return (ns_print((struct sockaddr_ns *)sa)); 588 589 case AF_ISO: 590 (void)snprintf(line, sizeof line, "iso %s", 591 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 592 break; 593 594 case AF_APPLETALK: 595 (void) snprintf(line, sizeof(line), "atalk %d.%d", 596 ((struct sockaddr_at *)sa)->sat_addr.s_net, 597 ((struct sockaddr_at *)sa)->sat_addr.s_node); 598 break; 599 #endif /* SMALL */ 600 601 default: 602 (void)snprintf(line, sizeof line, "(%d) %s", 603 sa->sa_family, any_ntoa(sa)); 604 break; 605 606 } 607 return (line); 608 } 609 610 /* 611 * Return the name of the network whose address is given. 612 * The address is assumed to be that of a net or subnet, not a host. 613 */ 614 char * 615 netname(sa, nm) 616 struct sockaddr *sa, *nm; 617 { 618 char *cp = 0; 619 static char line[50]; 620 struct netent *np = 0; 621 u_int32_t net, mask; 622 u_int32_t i; 623 int subnetshift, nml; 624 struct in_addr in; 625 626 switch (sa->sa_family) { 627 628 case AF_INET: 629 in = ((struct sockaddr_in *)sa)->sin_addr; 630 i = ntohl(in.s_addr); 631 nml = netmask_length(nm, AF_INET); 632 if (i == 0) { 633 if (nml == 0) 634 cp = "default"; 635 else { 636 static char notdefault[sizeof(NOTDEFSTRING)]; 637 638 snprintf(notdefault, sizeof(notdefault), 639 "0.0.0.0/%s", netmask_string(nm, nml)); 640 cp = notdefault; 641 } 642 } 643 else if (!nflag) { 644 if (IN_CLASSA(i)) { 645 mask = IN_CLASSA_NET; 646 subnetshift = 8; 647 } else if (IN_CLASSB(i)) { 648 mask = IN_CLASSB_NET; 649 subnetshift = 8; 650 } else { 651 mask = IN_CLASSC_NET; 652 subnetshift = 4; 653 } 654 /* 655 * If there are more bits than the standard mask 656 * would suggest, subnets must be in use. 657 * Guess at the subnet mask, assuming reasonable 658 * width subnet fields. 659 */ 660 while (i &~ mask) 661 mask = (int32_t)mask >> subnetshift; 662 net = i & mask; 663 while ((mask & 1) == 0) 664 mask >>= 1, net >>= 1; 665 np = getnetbyaddr(net, AF_INET); 666 if (np) 667 cp = np->n_name; 668 } 669 if (cp) 670 (void)strlcpy(line, cp, sizeof(line)); 671 else { 672 #if 0 /* XXX - This is silly... */ 673 #define C(x) ((x) & 0xff) 674 if ((i & 0xffffff) == 0) 675 (void)snprintf(line, sizeof line, "%u", 676 C(i >> 24)); 677 else if ((i & 0xffff) == 0) 678 (void)snprintf(line, sizeof line, "%u.%u", 679 C(i >> 24), C(i >> 16)); 680 else if ((i & 0xff) == 0) 681 (void)snprintf(line, sizeof line, "%u.%u.%u", 682 C(i >> 24), C(i >> 16), C(i >> 8)); 683 else 684 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 685 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 686 #undef C 687 #else /* XXX */ 688 (void)strlcpy(line, inet_ntoa(in), sizeof(line)); 689 #endif /* XXX */ 690 } 691 break; 692 693 case AF_LINK: 694 return (link_ntoa((struct sockaddr_dl *)sa)); 695 696 #ifndef SMALL 697 #ifdef INET6 698 case AF_INET6: 699 { 700 struct sockaddr_in6 sin6; 701 int niflags; 702 703 #ifdef NI_WITHSCOPEID 704 niflags = NI_WITHSCOPEID; 705 #else 706 niflags = 0; 707 #endif 708 if (nflag) 709 niflags |= NI_NUMERICHOST; 710 memset(&sin6, 0, sizeof(sin6)); 711 memcpy(&sin6, sa, sa->sa_len); 712 sin6.sin6_len = sizeof(struct sockaddr_in6); 713 sin6.sin6_family = AF_INET6; 714 #ifdef __KAME__ 715 if (sa->sa_len == sizeof(struct sockaddr_in6) && 716 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 717 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 718 sin6.sin6_scope_id == 0) { 719 sin6.sin6_scope_id = 720 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 721 sin6.sin6_addr.s6_addr[2] = 0; 722 sin6.sin6_addr.s6_addr[3] = 0; 723 } 724 #endif 725 nml = netmask_length(nm, AF_INET6); 726 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 727 if (nml == 0) 728 strlcpy(line, "::", sizeof(line)); 729 else 730 /* noncontiguous never happens in ipv6 */ 731 snprintf(line, sizeof(line), "::/%d", nml); 732 } 733 734 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 735 line, sizeof(line), NULL, 0, niflags) != 0) 736 strlcpy(line, "invalid", sizeof(line)); 737 break; 738 } 739 #endif 740 741 case AF_NS: 742 return (ns_print((struct sockaddr_ns *)sa)); 743 744 case AF_ISO: 745 (void)snprintf(line, sizeof line, "iso %s", 746 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 747 break; 748 749 case AF_APPLETALK: 750 (void) snprintf(line, sizeof(line), "atalk %d.%d", 751 ((struct sockaddr_at *)sa)->sat_addr.s_net, 752 ((struct sockaddr_at *)sa)->sat_addr.s_node); 753 break; 754 #endif /* SMALL */ 755 756 default: 757 (void)snprintf(line, sizeof line, "af %d: %s", 758 sa->sa_family, any_ntoa(sa)); 759 break; 760 } 761 return (line); 762 } 763 764 static void 765 set_metric(value, key) 766 char *value; 767 int key; 768 { 769 int flag = 0; 770 u_long noval, *valp = &noval; 771 772 switch (key) { 773 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 774 caseof(K_MTU, RTV_MTU, rmx_mtu); 775 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 776 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 777 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 778 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 779 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 780 caseof(K_RTT, RTV_RTT, rmx_rtt); 781 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 782 } 783 rtm_inits |= flag; 784 if (lockrest || locking) 785 rt_metrics.rmx_locks |= flag; 786 if (locking) 787 locking = 0; 788 *valp = atoi(value); 789 } 790 791 static int 792 newroute(argc, argv) 793 int argc; 794 char **argv; 795 { 796 char *cmd, *dest = "", *gateway = ""; 797 const char *error; 798 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 799 int key; 800 struct hostent *hp = 0; 801 802 cmd = argv[0]; 803 af = 0; 804 if (*cmd != 'g') 805 shutdown(sock, SHUT_RD); /* Don't want to read back our messages */ 806 while (--argc > 0) { 807 if (**(++argv)== '-') { 808 switch (key = keyword(1 + *argv)) { 809 810 case K_SA: 811 af = PF_ROUTE; 812 aflen = sizeof(union sockunion); 813 break; 814 815 #ifndef SMALL 816 case K_ATALK: 817 af = AF_APPLETALK; 818 aflen = sizeof(struct sockaddr_at); 819 break; 820 #endif 821 822 case K_INET: 823 af = AF_INET; 824 aflen = sizeof(struct sockaddr_in); 825 break; 826 827 #ifdef INET6 828 case K_INET6: 829 af = AF_INET6; 830 aflen = sizeof(struct sockaddr_in6); 831 break; 832 #endif 833 834 case K_LINK: 835 af = AF_LINK; 836 aflen = sizeof(struct sockaddr_dl); 837 break; 838 839 #ifndef SMALL 840 case K_OSI: 841 case K_ISO: 842 af = AF_ISO; 843 aflen = sizeof(struct sockaddr_iso); 844 break; 845 846 case K_X25: 847 af = AF_CCITT; 848 aflen = sizeof(struct sockaddr_x25); 849 break; 850 851 case K_XNS: 852 af = AF_NS; 853 aflen = sizeof(struct sockaddr_ns); 854 break; 855 #endif /* SMALL */ 856 857 case K_IFACE: 858 case K_INTERFACE: 859 iflag++; 860 break; 861 case K_NOSTATIC: 862 flags &= ~RTF_STATIC; 863 break; 864 case K_LLINFO: 865 flags |= RTF_LLINFO; 866 break; 867 case K_LOCK: 868 locking = 1; 869 break; 870 case K_LOCKREST: 871 lockrest = 1; 872 break; 873 case K_HOST: 874 forcehost++; 875 break; 876 case K_REJECT: 877 flags |= RTF_REJECT; 878 break; 879 case K_BLACKHOLE: 880 flags |= RTF_BLACKHOLE; 881 break; 882 case K_CLONED: 883 flags |= RTF_CLONED; 884 break; 885 case K_PROTO1: 886 flags |= RTF_PROTO1; 887 break; 888 case K_PROTO2: 889 flags |= RTF_PROTO2; 890 break; 891 case K_CLONING: 892 flags |= RTF_CLONING; 893 break; 894 case K_XRESOLVE: 895 flags |= RTF_XRESOLVE; 896 break; 897 case K_STATIC: 898 flags |= RTF_STATIC; 899 break; 900 case K_IFA: 901 if (!--argc) 902 usage(1+*argv); 903 (void) getaddr(RTA_IFA, *++argv, 0); 904 break; 905 case K_IFP: 906 if (!--argc) 907 usage(1+*argv); 908 (void) getaddr(RTA_IFP, *++argv, 0); 909 break; 910 case K_GENMASK: 911 if (!--argc) 912 usage(1+*argv); 913 (void) getaddr(RTA_GENMASK, *++argv, 0); 914 break; 915 case K_GATEWAY: 916 if (!--argc) 917 usage(1+*argv); 918 (void) getaddr(RTA_GATEWAY, *++argv, 0); 919 break; 920 case K_DST: 921 if (!--argc) 922 usage(1+*argv); 923 ishost = getaddr(RTA_DST, *++argv, &hp); 924 dest = *argv; 925 break; 926 case K_NETMASK: 927 if (!--argc) 928 usage(1+*argv); 929 (void) getaddr(RTA_NETMASK, *++argv, 0); 930 /* FALLTHROUGH */ 931 case K_NET: 932 forcenet++; 933 break; 934 case K_PREFIXLEN: 935 if (!--argc) 936 usage(1+*argv); 937 ishost = prefixlen(*++argv); 938 break; 939 case K_MTU: 940 case K_HOPCOUNT: 941 case K_EXPIRE: 942 case K_RECVPIPE: 943 case K_SENDPIPE: 944 case K_SSTHRESH: 945 case K_RTT: 946 case K_RTTVAR: 947 if (!--argc) 948 usage(1+*argv); 949 set_metric(*++argv, key); 950 break; 951 default: 952 usage(1+*argv); 953 } 954 } else { 955 if ((rtm_addrs & RTA_DST) == 0) { 956 dest = *argv; 957 ishost = getaddr(RTA_DST, *argv, &hp); 958 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 959 gateway = *argv; 960 (void) getaddr(RTA_GATEWAY, *argv, &hp); 961 } else { 962 ret = atoi(*argv); 963 964 if (ret == 0) { 965 if (strcmp(*argv, "0") == 0) { 966 if (!qflag) { 967 warnx("%s, %s", 968 "old usage of trailing 0", 969 "assuming route to if"); 970 } 971 } else 972 usage((char *)NULL); 973 iflag = 1; 974 continue; 975 } else if (ret > 0 && ret < 10) { 976 if (!qflag) { 977 warnx("%s, %s", 978 "old usage of trailing digit", 979 "assuming route via gateway"); 980 } 981 iflag = 0; 982 continue; 983 } 984 (void) getaddr(RTA_NETMASK, *argv, 0); 985 } 986 } 987 } 988 if (forcehost && forcenet) 989 errx(1, "-host and -net conflict"); 990 else if (forcehost) 991 ishost = 1; 992 else if (forcenet) 993 ishost = 0; 994 flags |= RTF_UP; 995 if (ishost) 996 flags |= RTF_HOST; 997 if (iflag == 0) 998 flags |= RTF_GATEWAY; 999 for (attempts = 1; ; attempts++) { 1000 errno = 0; 1001 if ((ret = rtmsg(*cmd, flags)) == 0) 1002 break; 1003 if (errno != ENETUNREACH && errno != ESRCH) 1004 break; 1005 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 1006 hp->h_addr_list++; 1007 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 1008 hp->h_length); 1009 } else 1010 break; 1011 } 1012 if (*cmd == 'g') 1013 return rv; 1014 oerrno = errno; 1015 if (!qflag) { 1016 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 1017 if (*gateway) { 1018 (void) printf(": gateway %s", gateway); 1019 if (attempts > 1 && ret == 0 && af == AF_INET) 1020 (void) printf(" (%s)", 1021 inet_ntoa(so_gate.sin.sin_addr)); 1022 } 1023 if (ret == 0) 1024 (void) printf("\n"); 1025 } 1026 if (ret != 0) { 1027 switch (oerrno) { 1028 case ESRCH: 1029 error = "not in table"; 1030 break; 1031 case EBUSY: 1032 error = "entry in use"; 1033 break; 1034 case ENOBUFS: 1035 error = "routing table overflow"; 1036 break; 1037 default: 1038 error = strerror(oerrno); 1039 break; 1040 } 1041 (void) printf(": %s\n", error); 1042 return 1; 1043 } 1044 return 0; 1045 } 1046 1047 static void 1048 inet_makenetandmask(u_int32_t net, struct sockaddr_in *isin) 1049 { 1050 u_int32_t addr, mask = 0; 1051 char *cp; 1052 1053 rtm_addrs |= RTA_NETMASK; 1054 if (net == 0) 1055 mask = addr = 0; 1056 else if (net < 128) { 1057 addr = net << IN_CLASSA_NSHIFT; 1058 mask = IN_CLASSA_NET; 1059 } else if (net < 192) { 1060 addr = net << IN_CLASSA_NSHIFT; 1061 mask = IN_CLASSB_NET; 1062 } else if (net < 224) { 1063 addr = net << IN_CLASSA_NSHIFT; 1064 mask = IN_CLASSC_NET; 1065 } else if (net < 256) { 1066 addr = net << IN_CLASSA_NSHIFT; 1067 mask = IN_CLASSD_NET; 1068 } else if (net < 49152) { /* 192 * 256 */ 1069 addr = net << IN_CLASSB_NSHIFT; 1070 mask = IN_CLASSB_NET; 1071 } else if (net < 57344) { /* 224 * 256 */ 1072 addr = net << IN_CLASSB_NSHIFT; 1073 mask = IN_CLASSC_NET; 1074 } else if (net < 65536) { /* XXX See above */ 1075 addr = net << IN_CLASSB_NSHIFT; 1076 mask = IN_CLASSB_NET; 1077 } else if (net < 14680064L) { /* 224 * 65536 */ 1078 addr = net << IN_CLASSC_NSHIFT; 1079 mask = IN_CLASSC_NET; 1080 } else if (net < 16777216L) { 1081 addr = net << IN_CLASSC_NSHIFT; 1082 mask = IN_CLASSD_NET; 1083 } else { 1084 addr = net; 1085 if ((addr & IN_CLASSA_HOST) == 0) 1086 mask = IN_CLASSA_NET; 1087 else if ((addr & IN_CLASSB_HOST) == 0) 1088 mask = IN_CLASSB_NET; 1089 else if ((addr & IN_CLASSC_HOST) == 0) 1090 mask = IN_CLASSC_NET; 1091 else 1092 mask = -1; 1093 } 1094 isin->sin_addr.s_addr = htonl(addr); 1095 isin = &so_mask.sin; 1096 isin->sin_addr.s_addr = htonl(mask); 1097 isin->sin_len = 0; 1098 isin->sin_family = 0; 1099 cp = (char *)(&isin->sin_addr + 1); 1100 while (*--cp == 0 && cp > (char *)isin) 1101 ; 1102 isin->sin_len = 1 + cp - (char *)isin; 1103 } 1104 1105 #ifdef INET6 1106 /* 1107 * XXX the function may need more improvement... 1108 */ 1109 static int 1110 inet6_makenetandmask(sin6) 1111 struct sockaddr_in6 *sin6; 1112 { 1113 char *plen; 1114 struct in6_addr in6; 1115 1116 plen = NULL; 1117 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 1118 sin6->sin6_scope_id == 0) { 1119 plen = "0"; 1120 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 1121 /* aggregatable global unicast - RFC2374 */ 1122 memset(&in6, 0, sizeof(in6)); 1123 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 1124 plen = "64"; 1125 } 1126 1127 if (!plen || strcmp(plen, "128") == 0) 1128 return 1; 1129 else { 1130 rtm_addrs |= RTA_NETMASK; 1131 (void)prefixlen(plen); 1132 return 0; 1133 } 1134 } 1135 #endif 1136 1137 /* 1138 * Interpret an argument as a network address of some kind, 1139 * returning 1 if a host address, 0 if a network address. 1140 */ 1141 static int 1142 getaddr(which, s, hpp) 1143 int which; 1144 char *s; 1145 struct hostent **hpp; 1146 { 1147 sup su; 1148 struct hostent *hp; 1149 struct netent *np; 1150 u_int32_t val; 1151 char *t; 1152 int afamily; /* local copy of af so we can change it */ 1153 1154 if (af == 0) { 1155 af = AF_INET; 1156 aflen = sizeof(struct sockaddr_in); 1157 } 1158 afamily = af; 1159 rtm_addrs |= which; 1160 switch (which) { 1161 case RTA_DST: 1162 su = &so_dst; 1163 break; 1164 case RTA_GATEWAY: 1165 su = &so_gate; 1166 break; 1167 case RTA_NETMASK: 1168 su = &so_mask; 1169 break; 1170 case RTA_GENMASK: 1171 su = &so_genmask; 1172 break; 1173 case RTA_IFP: 1174 su = &so_ifp; 1175 afamily = AF_LINK; 1176 break; 1177 case RTA_IFA: 1178 su = &so_ifa; 1179 su->sa.sa_family = af; 1180 break; 1181 default: 1182 su = NULL; 1183 usage("Internal Error"); 1184 /*NOTREACHED*/ 1185 } 1186 su->sa.sa_len = aflen; 1187 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1188 if (strcmp(s, "default") == 0) { 1189 switch (which) { 1190 case RTA_DST: 1191 forcenet++; 1192 (void) getaddr(RTA_NETMASK, s, 0); 1193 break; 1194 case RTA_NETMASK: 1195 case RTA_GENMASK: 1196 su->sa.sa_len = 0; 1197 } 1198 return (0); 1199 } 1200 switch (afamily) { 1201 #ifndef SMALL 1202 #ifdef INET6 1203 case AF_INET6: 1204 { 1205 struct addrinfo hints, *res; 1206 char *slash = 0; 1207 1208 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 1209 *slash = '\0'; 1210 memset(&hints, 0, sizeof(hints)); 1211 hints.ai_family = afamily; /*AF_INET6*/ 1212 hints.ai_flags = AI_NUMERICHOST; 1213 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1214 if (getaddrinfo(s, "0", &hints, &res) != 0) { 1215 hints.ai_flags = 0; 1216 if (slash) { 1217 *slash = '/'; 1218 slash = 0; 1219 } 1220 if (getaddrinfo(s, "0", &hints, &res) != 0) { 1221 (void) fprintf(stderr, "%s: bad value\n", s); 1222 exit(1); 1223 } 1224 } 1225 if (slash) 1226 *slash = '/'; 1227 if (sizeof(su->sin6) != res->ai_addrlen) { 1228 (void) fprintf(stderr, "%s: bad value\n", s); 1229 exit(1); 1230 } 1231 if (res->ai_next) { 1232 (void) fprintf(stderr, 1233 "%s: resolved to multiple values\n", s); 1234 exit(1); 1235 } 1236 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1237 freeaddrinfo(res); 1238 #ifdef __KAME__ 1239 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1240 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 1241 su->sin6.sin6_scope_id) { 1242 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1243 htons(su->sin6.sin6_scope_id); 1244 su->sin6.sin6_scope_id = 0; 1245 } 1246 #endif 1247 if (hints.ai_flags == AI_NUMERICHOST) { 1248 if (slash) 1249 return (prefixlen(slash + 1)); 1250 if (which == RTA_DST) 1251 return (inet6_makenetandmask(&su->sin6)); 1252 return (0); 1253 } else 1254 return (1); 1255 } 1256 #endif 1257 1258 case AF_NS: 1259 if (which == RTA_DST) { 1260 struct sockaddr_ns *sms = &(so_mask.sns); 1261 memset(sms, 0, sizeof(*sms)); 1262 sms->sns_family = 0; 1263 sms->sns_len = 6; 1264 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 1265 rtm_addrs |= RTA_NETMASK; 1266 } 1267 su->sns.sns_addr = ns_addr(s); 1268 return (!ns_nullhost(su->sns.sns_addr)); 1269 1270 case AF_OSI: 1271 su->siso.siso_addr = *iso_addr(s); 1272 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1273 char *cp = (char *)TSEL(&su->siso); 1274 su->siso.siso_nlen = 0; 1275 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1276 su->siso.siso_len = 1 + cp - (char *)su; 1277 } 1278 return (1); 1279 1280 case AF_CCITT: 1281 ccitt_addr(s, &su->sx25); 1282 return (which == RTA_DST ? x25_makemask() : 1); 1283 #endif /* SMALL */ 1284 1285 case PF_ROUTE: 1286 su->sa.sa_len = sizeof(*su); 1287 sockaddr(s, &su->sa); 1288 return (1); 1289 1290 #ifndef SMALL 1291 case AF_APPLETALK: 1292 t = strchr (s, '.'); 1293 if (!t) { 1294 badataddr: 1295 errx(1, "bad address: %s", s); 1296 } 1297 val = atoi (s); 1298 if (val > 65535) 1299 goto badataddr; 1300 su->sat.sat_addr.s_net = val; 1301 val = atoi (t); 1302 if (val > 256) 1303 goto badataddr; 1304 su->sat.sat_addr.s_node = val; 1305 rtm_addrs |= RTA_NETMASK; 1306 return(forcehost || su->sat.sat_addr.s_node != 0); 1307 #endif 1308 1309 case AF_LINK: 1310 link_addr(s, &su->sdl); 1311 return (1); 1312 1313 case AF_INET: 1314 default: 1315 break; 1316 } 1317 1318 if (hpp == NULL) 1319 hpp = &hp; 1320 *hpp = NULL; 1321 1322 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 1323 *t = '\0'; 1324 if ((val = inet_addr(s)) != INADDR_NONE) { 1325 inet_makenetandmask(htonl(val), &su->sin); 1326 return prefixlen(&t[1]); 1327 } 1328 *t = '/'; 1329 } 1330 if (((val = inet_addr(s)) != INADDR_NONE) && 1331 (which != RTA_DST || forcenet == 0)) { 1332 su->sin.sin_addr.s_addr = val; 1333 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1334 return (1); 1335 else { 1336 val = ntohl(val); 1337 goto netdone; 1338 } 1339 } 1340 if ((val = inet_network(s)) != INADDR_NONE || 1341 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1342 netdone: 1343 if (which == RTA_DST) 1344 inet_makenetandmask(val, &su->sin); 1345 return (0); 1346 } 1347 hp = gethostbyname(s); 1348 if (hp) { 1349 *hpp = hp; 1350 su->sin.sin_family = hp->h_addrtype; 1351 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1352 return (1); 1353 } 1354 errx(1, "bad value: %s", s); 1355 } 1356 1357 int 1358 prefixlen(s) 1359 char *s; 1360 { 1361 int len = atoi(s), q, r; 1362 int max; 1363 1364 switch (af) { 1365 case AF_INET: 1366 max = sizeof(struct in_addr) * 8; 1367 break; 1368 #ifdef INET6 1369 case AF_INET6: 1370 max = sizeof(struct in6_addr) * 8; 1371 break; 1372 #endif 1373 default: 1374 (void) fprintf(stderr, 1375 "prefixlen is not supported with af %d\n", af); 1376 exit(1); 1377 } 1378 1379 rtm_addrs |= RTA_NETMASK; 1380 if (len < -1 || len > max) { 1381 (void) fprintf(stderr, "%s: bad value\n", s); 1382 exit(1); 1383 } 1384 1385 q = len >> 3; 1386 r = len & 7; 1387 switch (af) { 1388 case AF_INET: 1389 memset(&so_mask, 0, sizeof(so_mask)); 1390 so_mask.sin.sin_family = AF_INET; 1391 so_mask.sin.sin_len = sizeof(struct sockaddr_in); 1392 so_mask.sin.sin_addr.s_addr = htonl(0xffffffff << (32 - len)); 1393 break; 1394 #ifdef INET6 1395 case AF_INET6: 1396 so_mask.sin6.sin6_family = AF_INET6; 1397 so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1398 memset((void *)&so_mask.sin6.sin6_addr, 0, 1399 sizeof(so_mask.sin6.sin6_addr)); 1400 if (q > 0) 1401 memset((void *)&so_mask.sin6.sin6_addr, 0xff, q); 1402 if (r > 0) 1403 *((u_char *)&so_mask.sin6.sin6_addr + q) = 1404 (0xff00 >> r) & 0xff; 1405 break; 1406 #endif 1407 } 1408 return (len == max); 1409 } 1410 1411 #ifndef SMALL 1412 int 1413 x25_makemask() 1414 { 1415 char *cp; 1416 1417 if ((rtm_addrs & RTA_NETMASK) == 0) { 1418 rtm_addrs |= RTA_NETMASK; 1419 for (cp = (char *)&so_mask.sx25.x25_net; 1420 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1421 *cp = -1; 1422 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1423 } 1424 return 0; 1425 } 1426 1427 1428 char * 1429 ns_print(sns) 1430 struct sockaddr_ns *sns; 1431 { 1432 struct ns_addr work; 1433 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1434 u_short port; 1435 static char mybuf[50], cport[10], chost[25]; 1436 char *host = ""; 1437 char *p; 1438 u_char *q; 1439 1440 work = sns->sns_addr; 1441 port = ntohs(work.x_port); 1442 work.x_port = 0; 1443 net.net_e = work.x_net; 1444 if (ns_nullhost(work) && net.int32_t_e == 0) { 1445 if (!port) 1446 return ("*.*"); 1447 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1448 return (mybuf); 1449 } 1450 1451 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1452 host = "any"; 1453 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1454 host = "*"; 1455 else { 1456 q = work.x_host.c_host; 1457 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1458 q[0], q[1], q[2], q[3], q[4], q[5]); 1459 for (p = chost; *p == '0' && p < chost + 12; p++) 1460 /* void */; 1461 host = p; 1462 } 1463 if (port) 1464 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1465 else 1466 *cport = 0; 1467 1468 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1469 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1470 return (mybuf); 1471 } 1472 1473 static void 1474 interfaces() 1475 { 1476 size_t needed; 1477 int mib[6]; 1478 char *buf, *lim, *next; 1479 struct rt_msghdr *rtm; 1480 1481 mib[0] = CTL_NET; 1482 mib[1] = PF_ROUTE; 1483 mib[2] = 0; /* protocol */ 1484 mib[3] = 0; /* wildcard address family */ 1485 mib[4] = NET_RT_IFLIST; 1486 mib[5] = 0; /* no flags */ 1487 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1488 err(1, "route-sysctl-estimate"); 1489 if ((buf = malloc(needed)) == NULL) 1490 err(1, "malloc"); 1491 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1492 err(1, "actual retrieval of interface table"); 1493 lim = buf + needed; 1494 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1495 rtm = (struct rt_msghdr *)next; 1496 print_rtmsg(rtm, rtm->rtm_msglen); 1497 } 1498 } 1499 1500 static void 1501 monitor() 1502 { 1503 int n; 1504 char msg[2048]; 1505 1506 verbose = 1; 1507 if (debugonly) { 1508 interfaces(); 1509 exit(0); 1510 } 1511 for(;;) { 1512 time_t now; 1513 n = read(sock, msg, 2048); 1514 now = time(NULL); 1515 (void) printf("got message of size %d on %s", n, ctime(&now)); 1516 print_rtmsg((struct rt_msghdr *)msg, n); 1517 } 1518 } 1519 1520 #endif /* SMALL */ 1521 1522 1523 struct { 1524 struct rt_msghdr m_rtm; 1525 char m_space[512]; 1526 } m_rtmsg; 1527 1528 static int 1529 rtmsg(cmd, flags) 1530 int cmd, flags; 1531 { 1532 static int seq; 1533 int rlen; 1534 char *cp = m_rtmsg.m_space; 1535 int l; 1536 1537 #define NEXTADDR(w, u) \ 1538 if (rtm_addrs & (w)) {\ 1539 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1540 if (verbose && ! shortoutput) sodump(&(u),"u");\ 1541 } 1542 1543 errno = 0; 1544 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1545 if (cmd == 'a') 1546 cmd = RTM_ADD; 1547 else if (cmd == 'c') 1548 cmd = RTM_CHANGE; 1549 else if (cmd == 'g') { 1550 #ifdef SMALL 1551 return (-1); 1552 #else /* SMALL */ 1553 cmd = RTM_GET; 1554 if (so_ifp.sa.sa_family == 0) { 1555 so_ifp.sa.sa_family = AF_LINK; 1556 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1557 rtm_addrs |= RTA_IFP; 1558 } 1559 #endif /* SMALL */ 1560 } else 1561 cmd = RTM_DELETE; 1562 #define rtm m_rtmsg.m_rtm 1563 rtm.rtm_type = cmd; 1564 rtm.rtm_flags = flags; 1565 rtm.rtm_version = RTM_VERSION; 1566 rtm.rtm_seq = ++seq; 1567 rtm.rtm_addrs = rtm_addrs; 1568 rtm.rtm_rmx = rt_metrics; 1569 rtm.rtm_inits = rtm_inits; 1570 1571 if (rtm_addrs & RTA_NETMASK) 1572 mask_addr(); 1573 NEXTADDR(RTA_DST, so_dst); 1574 NEXTADDR(RTA_GATEWAY, so_gate); 1575 NEXTADDR(RTA_NETMASK, so_mask); 1576 NEXTADDR(RTA_GENMASK, so_genmask); 1577 NEXTADDR(RTA_IFP, so_ifp); 1578 NEXTADDR(RTA_IFA, so_ifa); 1579 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1580 if (verbose && ! shortoutput) 1581 print_rtmsg(&rtm, l); 1582 if (debugonly) 1583 return (0); 1584 if ((rlen = write(sock, (char *)&m_rtmsg, l)) < 0) { 1585 perror("writing to routing socket"); 1586 return (-1); 1587 } 1588 #ifndef SMALL 1589 if (cmd == RTM_GET) { 1590 do { 1591 l = read(sock, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1592 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1593 if (l < 0) 1594 err(1, "read from routing socket"); 1595 else 1596 print_getmsg(&rtm, l); 1597 } 1598 #endif /* SMALL */ 1599 #undef rtm 1600 return (0); 1601 } 1602 1603 static void 1604 mask_addr() 1605 { 1606 int olen = so_mask.sa.sa_len; 1607 char *cp1 = olen + (char *)&so_mask, *cp2; 1608 1609 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1610 if (*--cp1 != 0) { 1611 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1612 break; 1613 } 1614 if ((rtm_addrs & RTA_DST) == 0) 1615 return; 1616 switch (so_dst.sa.sa_family) { 1617 case AF_INET: 1618 #ifdef INET6 1619 case AF_INET6: 1620 #endif 1621 #ifndef SMALL 1622 case AF_APPLETALK: 1623 case AF_NS: 1624 case AF_CCITT: 1625 #endif /* SMALL */ 1626 case 0: 1627 return; 1628 #ifndef SMALL 1629 case AF_ISO: 1630 olen = MIN(so_dst.siso.siso_nlen, 1631 MAX(so_mask.sa.sa_len - 6, 0)); 1632 break; 1633 #endif /* SMALL */ 1634 } 1635 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1636 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1637 while (cp2 > cp1) 1638 *--cp2 = 0; 1639 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1640 while (cp1 > so_dst.sa.sa_data) 1641 *--cp1 &= *--cp2; 1642 #ifndef SMALL 1643 switch (so_dst.sa.sa_family) { 1644 case AF_ISO: 1645 so_dst.siso.siso_nlen = olen; 1646 break; 1647 } 1648 #endif /* SMALL */ 1649 } 1650 1651 char *msgtypes[] = { 1652 "", 1653 "RTM_ADD: Add Route", 1654 "RTM_DELETE: Delete Route", 1655 "RTM_CHANGE: Change Metrics or flags", 1656 "RTM_GET: Report Metrics", 1657 "RTM_LOSING: Kernel Suspects Partitioning", 1658 "RTM_REDIRECT: Told to use different route", 1659 "RTM_MISS: Lookup failed on this address", 1660 "RTM_LOCK: fix specified metrics", 1661 "RTM_OLDADD: caused by SIOCADDRT", 1662 "RTM_OLDDEL: caused by SIOCDELRT", 1663 "RTM_RESOLVE: Route created by cloning", 1664 "RTM_NEWADDR: address being added to iface", 1665 "RTM_DELADDR: address being removed from iface", 1666 "RTM_OIFINFO: iface status change (pre-1.5)", 1667 "RTM_IFINFO: iface status change", 1668 "RTM_IFANNOUNCE: iface arrival/departure", 1669 0, 1670 }; 1671 1672 char metricnames[] = 1673 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1674 char routeflags[] = 1675 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1676 char ifnetflags[] = 1677 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1678 char addrnames[] = 1679 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1680 1681 1682 #ifndef SMALL 1683 static const char * 1684 linkstate(ifm) 1685 struct if_msghdr *ifm; 1686 { 1687 static char buf[64]; 1688 1689 switch (ifm->ifm_data.ifi_link_state) { 1690 case LINK_STATE_UNKNOWN: 1691 return "carrier: unknown"; 1692 case LINK_STATE_DOWN: 1693 return "carrier: no carrier"; 1694 case LINK_STATE_UP: 1695 return "carrier: active"; 1696 default: 1697 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1698 ifm->ifm_data.ifi_link_state); 1699 return buf; 1700 } 1701 } 1702 #endif /* SMALL */ 1703 1704 static void 1705 print_rtmsg(rtm, msglen) 1706 struct rt_msghdr *rtm; 1707 int msglen; 1708 { 1709 struct if_msghdr *ifm; 1710 struct ifa_msghdr *ifam; 1711 struct if_announcemsghdr *ifan; 1712 1713 if (verbose == 0) 1714 return; 1715 if (rtm->rtm_version != RTM_VERSION) { 1716 (void) printf("routing message version %d not understood\n", 1717 rtm->rtm_version); 1718 return; 1719 } 1720 if (msgtypes[rtm->rtm_type]) 1721 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1722 else 1723 (void)printf("#%d: ", rtm->rtm_type); 1724 (void)printf("len %d, ", rtm->rtm_msglen); 1725 switch (rtm->rtm_type) { 1726 case RTM_IFINFO: 1727 ifm = (struct if_msghdr *)rtm; 1728 (void) printf("if# %d, %s, flags:", ifm->ifm_index, 1729 #ifdef SMALL 1730 "" 1731 #else 1732 linkstate(ifm) 1733 #endif /* SMALL */ 1734 ); 1735 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1736 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1737 break; 1738 case RTM_NEWADDR: 1739 case RTM_DELADDR: 1740 ifam = (struct ifa_msghdr *)rtm; 1741 (void) printf("metric %d, flags:", ifam->ifam_metric); 1742 bprintf(stdout, ifam->ifam_flags, routeflags); 1743 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1744 break; 1745 case RTM_IFANNOUNCE: 1746 ifan = (struct if_announcemsghdr *)rtm; 1747 (void) printf("if# %d, what: ", ifan->ifan_index); 1748 switch (ifan->ifan_what) { 1749 case IFAN_ARRIVAL: 1750 printf("arrival"); 1751 break; 1752 case IFAN_DEPARTURE: 1753 printf("departure"); 1754 break; 1755 default: 1756 printf("#%d", ifan->ifan_what); 1757 break; 1758 } 1759 printf("\n"); 1760 break; 1761 default: 1762 (void) printf("pid: %d, seq %d, errno %d, flags:", 1763 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1764 bprintf(stdout, rtm->rtm_flags, routeflags); 1765 pmsg_common(rtm); 1766 } 1767 } 1768 1769 #ifndef SMALL 1770 static void 1771 print_getmsg(rtm, msglen) 1772 struct rt_msghdr *rtm; 1773 int msglen; 1774 { 1775 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL; 1776 struct sockaddr_dl *ifp = NULL; 1777 struct sockaddr *sa; 1778 char *cp; 1779 int i; 1780 1781 if (! shortoutput) 1782 (void) printf(" route to: %s\n", 1783 routename((struct sockaddr *) &so_dst, NULL, RTF_HOST)); 1784 if (rtm->rtm_version != RTM_VERSION) { 1785 warnx("routing message version %d not understood", 1786 rtm->rtm_version); 1787 return; 1788 } 1789 if (rtm->rtm_msglen > msglen) { 1790 warnx("message length mismatch, in packet %d, returned %d", 1791 rtm->rtm_msglen, msglen); 1792 } 1793 if (rtm->rtm_errno) { 1794 warn("RTM_GET"); 1795 return; 1796 } 1797 cp = ((char *)(rtm + 1)); 1798 if (rtm->rtm_addrs) 1799 for (i = 1; i; i <<= 1) 1800 if (i & rtm->rtm_addrs) { 1801 sa = (struct sockaddr *)cp; 1802 switch (i) { 1803 case RTA_DST: 1804 dst = sa; 1805 break; 1806 case RTA_GATEWAY: 1807 gate = sa; 1808 break; 1809 case RTA_NETMASK: 1810 mask = sa; 1811 break; 1812 case RTA_IFP: 1813 if (sa->sa_family == AF_LINK && 1814 ((struct sockaddr_dl *)sa)->sdl_nlen) 1815 ifp = (struct sockaddr_dl *)sa; 1816 break; 1817 case RTA_IFA: 1818 ifa = sa; 1819 break; 1820 } 1821 ADVANCE(cp, sa); 1822 } 1823 if (dst && mask) 1824 mask->sa_family = dst->sa_family; /* XXX */ 1825 if (dst && ! shortoutput) 1826 (void)printf("destination: %s\n", 1827 routename(dst, mask, RTF_HOST)); 1828 if (mask && ! shortoutput) { 1829 int savenflag = nflag; 1830 1831 nflag = 1; 1832 (void)printf(" mask: %s\n", 1833 routename(mask, NULL, RTF_HOST)); 1834 nflag = savenflag; 1835 } 1836 if (gate && rtm->rtm_flags & RTF_GATEWAY && ! shortoutput) 1837 (void)printf(" gateway: %s\n", 1838 routename(gate, NULL, RTF_HOST)); 1839 if (ifa && ! shortoutput) 1840 (void)printf(" local addr: %s\n", 1841 routename(ifa, NULL, RTF_HOST)); 1842 if (ifp && ! shortoutput) 1843 (void)printf(" interface: %.*s\n", 1844 ifp->sdl_nlen, ifp->sdl_data); 1845 if (! shortoutput) { 1846 (void)printf(" flags: "); 1847 bprintf(stdout, rtm->rtm_flags, routeflags); 1848 } 1849 1850 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1851 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1852 1853 if (! shortoutput) { 1854 (void) printf("\n%s\n", "\ 1855 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1856 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1857 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1858 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1859 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1860 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1861 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1862 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1863 if (rtm->rtm_rmx.rmx_expire) 1864 rtm->rtm_rmx.rmx_expire -= time(0); 1865 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1866 } 1867 #undef lock 1868 #undef msec 1869 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1870 1871 if ((rtm->rtm_addrs & RTF_GATEWAY) == 0) 1872 rv = 1; 1873 else { 1874 char *name; 1875 int addrs; 1876 1877 cp = (char *)(rtm + 1); 1878 addrs = rtm->rtm_addrs; 1879 1880 for (i = 1; i; i <<= 1) { 1881 sa = (struct sockaddr *)cp; 1882 if (i == RTF_GATEWAY) { 1883 name = routename(sa, NULL, RTF_HOST); 1884 if (name[0] == '\0') 1885 rv = 1; 1886 else if (shortoutput) 1887 printf("%s\n", name); 1888 } 1889 if (i & addrs) 1890 ADVANCE(cp, sa); 1891 } 1892 } 1893 1894 if (shortoutput) 1895 return; 1896 else if (verbose) 1897 pmsg_common(rtm); 1898 else if (rtm->rtm_addrs &~ RTA_IGN) { 1899 (void) printf("sockaddrs: "); 1900 bprintf(stdout, rtm->rtm_addrs, addrnames); 1901 putchar('\n'); 1902 } 1903 #undef RTA_IGN 1904 } 1905 #endif /* SMALL */ 1906 1907 void 1908 pmsg_common(rtm) 1909 struct rt_msghdr *rtm; 1910 { 1911 (void) printf("\nlocks: "); 1912 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1913 (void) printf(" inits: "); 1914 bprintf(stdout, rtm->rtm_inits, metricnames); 1915 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1916 } 1917 1918 static void 1919 pmsg_addrs(cp, addrs) 1920 char *cp; 1921 int addrs; 1922 { 1923 struct sockaddr *sa; 1924 int i; 1925 1926 if (addrs != 0) { 1927 (void) printf("\nsockaddrs: "); 1928 bprintf(stdout, addrs, addrnames); 1929 (void) putchar('\n'); 1930 for (i = 1; i; i <<= 1) 1931 if (i & addrs) { 1932 sa = (struct sockaddr *)cp; 1933 (void) printf(" %s", 1934 routename(sa, NULL, RTF_HOST)); 1935 ADVANCE(cp, sa); 1936 } 1937 } 1938 (void) putchar('\n'); 1939 (void) fflush(stdout); 1940 } 1941 1942 static void 1943 bprintf(fp, b, s) 1944 FILE *fp; 1945 int b; 1946 u_char *s; 1947 { 1948 int i; 1949 int gotsome = 0; 1950 1951 if (b == 0) 1952 return; 1953 while ((i = *s++) != 0) { 1954 if (b & (1 << (i-1))) { 1955 if (gotsome == 0) 1956 i = '<'; 1957 else 1958 i = ','; 1959 (void) putc(i, fp); 1960 gotsome = 1; 1961 for (; (i = *s) > 32; s++) 1962 (void) putc(i, fp); 1963 } else 1964 while (*s > 32) 1965 s++; 1966 } 1967 if (gotsome) 1968 (void) putc('>', fp); 1969 } 1970 1971 static int 1972 keyword(cp) 1973 char *cp; 1974 { 1975 struct keytab *kt = keywords; 1976 1977 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1978 kt++; 1979 return kt->kt_i; 1980 } 1981 1982 static void 1983 sodump(su, which) 1984 sup su; 1985 char *which; 1986 { 1987 #ifdef INET6 1988 char ntop_buf[NI_MAXHOST]; 1989 #endif 1990 1991 switch (su->sa.sa_family) { 1992 case AF_INET: 1993 (void) printf("%s: inet %s; ", 1994 which, inet_ntoa(su->sin.sin_addr)); 1995 break; 1996 #ifndef SMALL 1997 case AF_APPLETALK: 1998 (void) printf("%s: atalk %d.%d; ", 1999 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 2000 break; 2001 #endif 2002 case AF_LINK: 2003 (void) printf("%s: link %s; ", 2004 which, link_ntoa(&su->sdl)); 2005 break; 2006 #ifndef SMALL 2007 #ifdef INET6 2008 case AF_INET6: 2009 (void) printf("%s: inet6 %s; ", 2010 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 2011 ntop_buf, sizeof(ntop_buf))); 2012 break; 2013 #endif 2014 case AF_ISO: 2015 (void) printf("%s: iso %s; ", 2016 which, iso_ntoa(&su->siso.siso_addr)); 2017 break; 2018 case AF_NS: 2019 (void) printf("%s: xns %s; ", 2020 which, ns_ntoa(su->sns.sns_addr)); 2021 break; 2022 #endif /* SMALL */ 2023 default: 2024 (void) printf("af %p: %s; ", 2025 which, any_ntoa(&su->sa)); 2026 } 2027 (void) fflush(stdout); 2028 } 2029 2030 /* States*/ 2031 #define VIRGIN 0 2032 #define GOTONE 1 2033 #define GOTTWO 2 2034 /* Inputs */ 2035 #define DIGIT (4*0) 2036 #define END (4*1) 2037 #define DELIM (4*2) 2038 2039 static void 2040 sockaddr(addr, sa) 2041 char *addr; 2042 struct sockaddr *sa; 2043 { 2044 char *cp = (char *)sa; 2045 int size = sa->sa_len; 2046 char *cplim = cp + size; 2047 int byte = 0, state = VIRGIN, new = 0; 2048 2049 (void) memset(cp, 0, size); 2050 cp++; 2051 do { 2052 if ((*addr >= '0') && (*addr <= '9')) { 2053 new = *addr - '0'; 2054 } else if ((*addr >= 'a') && (*addr <= 'f')) { 2055 new = *addr - 'a' + 10; 2056 } else if ((*addr >= 'A') && (*addr <= 'F')) { 2057 new = *addr - 'A' + 10; 2058 } else if (*addr == 0) 2059 state |= END; 2060 else 2061 state |= DELIM; 2062 addr++; 2063 switch (state /* | INPUT */) { 2064 case GOTTWO | DIGIT: 2065 *cp++ = byte; /*FALLTHROUGH*/ 2066 case VIRGIN | DIGIT: 2067 state = GOTONE; byte = new; continue; 2068 case GOTONE | DIGIT: 2069 state = GOTTWO; byte = new + (byte << 4); continue; 2070 default: /* | DELIM */ 2071 state = VIRGIN; *cp++ = byte; byte = 0; continue; 2072 case GOTONE | END: 2073 case GOTTWO | END: 2074 *cp++ = byte; /* FALLTHROUGH */ 2075 case VIRGIN | END: 2076 break; 2077 } 2078 break; 2079 } while (cp < cplim); 2080 sa->sa_len = cp - (char *)sa; 2081 } 2082
Indexes created Sun Sep 28 16:09:52 GMT 2025