1 /* $NetBSD: route.c,v 1.144 2013/10/19 15:59:15 christos 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\ 35 The Regents of the University of California. All rights reserved."); 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 1.144 2013/10/19 15:59:15 christos Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/file.h> 48 #include <sys/socket.h> 49 #include <sys/ioctl.h> 50 #include <sys/mbuf.h> 51 #include <sys/sysctl.h> 52 53 #include <net/if.h> 54 #include <net/route.h> 55 #include <net/if_dl.h> 56 #include <net80211/ieee80211_netbsd.h> 57 #include <netinet/in.h> 58 #include <netatalk/at.h> 59 #include <netmpls/mpls.h> 60 #include <arpa/inet.h> 61 #include <netdb.h> 62 63 #include <errno.h> 64 #include <unistd.h> 65 #include <stdio.h> 66 #include <ctype.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <time.h> 70 #include <paths.h> 71 #include <err.h> 72 73 #include "keywords.h" 74 #include "extern.h" 75 #include "prog_ops.h" 76 77 union sockunion { 78 struct sockaddr sa; 79 struct sockaddr_in sin; 80 #ifdef INET6 81 struct sockaddr_in6 sin6; 82 #endif 83 struct sockaddr_at sat; 84 struct sockaddr_dl sdl; 85 #ifndef SMALL 86 struct sockaddr_mpls smpls; 87 #endif /* SMALL */ 88 struct sockaddr_storage sstorage; 89 }; 90 91 typedef union sockunion *sup; 92 93 struct sou { 94 union sockunion *so_dst, *so_gate, *so_mask, *so_genmask, *so_ifa, 95 *so_ifp, *so_mpls; 96 }; 97 98 static char *any_ntoa(const struct sockaddr *); 99 static const char *route_strerror(int); 100 static void set_metric(const char *, int); 101 static int newroute(int, char *const *); 102 static void inet_makenetandmask(u_int32_t, struct sockaddr_in *, struct sou *); 103 #ifdef INET6 104 static int inet6_makenetandmask(const struct sockaddr_in6 *, struct sou *); 105 #endif 106 static int getaddr(int, const char *, struct hostent **, struct sou *); 107 static int flushroutes(int, char *const [], int); 108 static int prefixlen(const char *, struct sou *); 109 #ifndef SMALL 110 static void interfaces(void); 111 __dead static void monitor(void); 112 static int print_getmsg(struct rt_msghdr *, int, struct sou *); 113 static const char *linkstate(struct if_msghdr *); 114 static sup readtag(sup, const char *); 115 static void addtag(sup, const char *, int); 116 #endif /* SMALL */ 117 static int rtmsg(int, int, struct sou *); 118 static void mask_addr(struct sou *); 119 static void print_rtmsg(struct rt_msghdr *, int); 120 static void pmsg_common(struct rt_msghdr *); 121 static void pmsg_addrs(const char *, int); 122 static void bprintf(FILE *, int, const char *); 123 static void sodump(sup, const char *); 124 static void sockaddr(const char *, struct sockaddr *); 125 126 int pid, rtm_addrs; 127 int sock; 128 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, Sflag; 129 int iflag, verbose, aflen = sizeof(struct sockaddr_in), rtag; 130 int locking, lockrest, debugonly, shortoutput; 131 struct rt_metrics rt_metrics; 132 int rtm_inits; 133 short ns_nullh[] = {0,0,0}; 134 short ns_bh[] = {-1,-1,-1}; 135 136 137 void 138 usage(const char *cp) 139 { 140 141 if (cp) 142 warnx("botched keyword: %s", cp); 143 (void)fprintf(stderr, 144 "Usage: %s [ -fnqSsv ] cmd [[ -<qualifers> ] args ]\n", 145 getprogname()); 146 exit(1); 147 /* NOTREACHED */ 148 } 149 150 #define PRIETHER "02x:%02x:%02x:%02x:%02x:%02x" 151 #define PRIETHER_ARGS(__enaddr) (__enaddr)[0], (__enaddr)[1], (__enaddr)[2], \ 152 (__enaddr)[3], (__enaddr)[4], (__enaddr)[5] 153 154 int 155 main(int argc, char * const *argv) 156 { 157 int ch; 158 159 if (argc < 2) 160 usage(NULL); 161 162 while ((ch = getopt(argc, argv, "dfnqSstv")) != -1) 163 switch (ch) { 164 case 'd': 165 debugonly = 1; 166 break; 167 case 'f': 168 doflush = 1; 169 break; 170 case 'n': 171 nflag = 1; 172 break; 173 case 'q': 174 qflag = 1; 175 break; 176 case 'S': 177 Sflag = 1; 178 break; 179 case 's': 180 shortoutput = 1; 181 break; 182 case 't': 183 tflag = 1; 184 break; 185 case 'v': 186 verbose = 1; 187 break; 188 case '?': 189 default: 190 usage(NULL); 191 /*NOTREACHED*/ 192 } 193 argc -= optind; 194 argv += optind; 195 196 if (prog_init && prog_init() == -1) 197 err(1, "init failed"); 198 199 pid = prog_getpid(); 200 if (tflag) 201 sock = prog_open("/dev/null", O_WRONLY, 0); 202 else 203 sock = prog_socket(PF_ROUTE, SOCK_RAW, 0); 204 if (sock < 0) 205 err(EXIT_FAILURE, "socket"); 206 207 if (*argv == NULL) { 208 if (doflush) 209 ch = K_FLUSH; 210 else 211 goto no_cmd; 212 } else 213 ch = keyword(*argv); 214 215 switch (ch) { 216 #ifndef SMALL 217 case K_GET: 218 #endif /* SMALL */ 219 case K_CHANGE: 220 case K_ADD: 221 case K_DELETE: 222 if (doflush) 223 (void)flushroutes(1, argv, 0); 224 return newroute(argc, argv); 225 226 case K_SHOW: 227 show(argc, argv); 228 return 0; 229 230 #ifndef SMALL 231 case K_MONITOR: 232 monitor(); 233 return 0; 234 235 #endif /* SMALL */ 236 case K_FLUSH: 237 return flushroutes(argc, argv, 0); 238 239 case K_FLUSHALL: 240 return flushroutes(argc, argv, 1); 241 no_cmd: 242 default: 243 usage(*argv); 244 /*NOTREACHED*/ 245 } 246 } 247 248 /* 249 * Purge all entries in the routing tables not 250 * associated with network interfaces. 251 */ 252 static int 253 flushroutes(int argc, char * const argv[], int doall) 254 { 255 struct sockaddr *sa; 256 size_t needed; 257 int flags, mib[6], rlen, seqno; 258 char *buf, *next, *lim; 259 const char *afname; 260 struct rt_msghdr *rtm; 261 262 flags = 0; 263 af = AF_UNSPEC; 264 /* Don't want to read back our messages */ 265 prog_shutdown(sock, SHUT_RD); 266 parse_show_opts(argc, argv, &af, &flags, &afname, false); 267 mib[0] = CTL_NET; 268 mib[1] = PF_ROUTE; 269 mib[2] = 0; /* protocol */ 270 mib[3] = 0; /* wildcard address family */ 271 mib[4] = NET_RT_DUMP; 272 mib[5] = 0; /* no flags */ 273 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 274 err(EXIT_FAILURE, "route-sysctl-estimate"); 275 buf = lim = NULL; 276 if (needed) { 277 if ((buf = malloc(needed)) == NULL) 278 err(EXIT_FAILURE, "malloc"); 279 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 280 err(EXIT_FAILURE, "actual retrieval of routing table"); 281 lim = buf + needed; 282 } 283 if (verbose) { 284 (void)printf("Examining routing table from sysctl\n"); 285 if (af != AF_UNSPEC) 286 printf("(address family %s)\n", afname); 287 } 288 if (needed == 0) 289 return 0; 290 seqno = 0; /* ??? */ 291 for (next = buf; next < lim; next += rtm->rtm_msglen) { 292 rtm = (struct rt_msghdr *)next; 293 sa = (struct sockaddr *)(rtm + 1); 294 if (verbose) 295 print_rtmsg(rtm, rtm->rtm_msglen); 296 if ((rtm->rtm_flags & flags) != flags) 297 continue; 298 if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC | 299 RTF_LLINFO)) && !doall) 300 continue; 301 if (af != AF_UNSPEC && sa->sa_family != af) 302 continue; 303 if (debugonly) 304 continue; 305 rtm->rtm_type = RTM_DELETE; 306 rtm->rtm_seq = seqno; 307 if ((rlen = prog_write(sock, next, 308 rtm->rtm_msglen)) < 0) { 309 warnx("writing to routing socket: %s", 310 route_strerror(errno)); 311 return 1; 312 } 313 if (rlen < (int)rtm->rtm_msglen) { 314 warnx("write to routing socket, got %d for rlen", rlen); 315 return 1; 316 } 317 seqno++; 318 if (qflag) 319 continue; 320 if (verbose) 321 print_rtmsg(rtm, rlen); 322 else { 323 (void)printf("%-20.20s ", 324 routename(sa, NULL, rtm->rtm_flags)); 325 sa = (struct sockaddr *)(RT_ROUNDUP(sa->sa_len) + 326 (char *)sa); 327 (void)printf("%-20.20s ", 328 routename(sa, NULL, RTF_HOST)); 329 (void)printf("done\n"); 330 } 331 } 332 free(buf); 333 return 0; 334 } 335 336 337 static char hexlist[] = "0123456789abcdef"; 338 339 static char * 340 any_ntoa(const struct sockaddr *sa) 341 { 342 static char obuf[3 * 256]; 343 const char *in; 344 char *out; 345 int len; 346 347 #if __GNUC__ > 2 348 len = sa->sa_len - offsetof(struct sockaddr, sa_data); 349 #else 350 len = sa->sa_len - ((struct sockaddr*)&sa->sa_data - sa); 351 #endif 352 in = sa->sa_data; 353 out = obuf; 354 355 do { 356 *out++ = hexlist[(*in >> 4) & 15]; 357 *out++ = hexlist[(*in++) & 15]; 358 *out++ = '.'; 359 } while (--len > 0); 360 out[-1] = '\0'; 361 return obuf; 362 } 363 364 int 365 netmask_length(struct sockaddr *nm, int family) 366 { 367 static int 368 /* number of bits in a nibble */ 369 _t[] = { 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4 }, 370 /* good nibbles are 1111, 1110, 1100, 1000, 0000 */ 371 _g[] = { 1,0,0,0,0,0,0,0,1,0,0,0,1,0,1,1 }; 372 int mask, good, zeroes, maskbytes, bit, i; 373 unsigned char *maskdata; 374 375 if (nm == NULL) 376 return 0; 377 378 mask = 0; 379 good = 1; 380 zeroes = 0; 381 382 switch (family) { 383 case AF_INET: { 384 struct sockaddr_in *nsin = (struct sockaddr_in *)nm; 385 maskdata = (unsigned char *)&nsin->sin_addr; 386 maskbytes = nsin->sin_len - 387 ((caddr_t)&nsin->sin_addr - (caddr_t)nsin); 388 break; 389 } 390 case AF_INET6: { 391 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nm; 392 maskdata = (unsigned char *)&sin6->sin6_addr; 393 maskbytes = sin6->sin6_len - 394 ((caddr_t)&sin6->sin6_addr - (caddr_t)sin6); 395 break; 396 } 397 default: 398 return 0; 399 } 400 401 /* 402 * Count the bits in the nibbles of the mask, and marking the 403 * netmask as not good (or at best, non-standard and very 404 * discouraged, in the case of AF_INET) if we find either of 405 * a nibble with non-contiguous bits, or a non-zero nibble 406 * after we've found a zero nibble. 407 */ 408 for (i = 0; i < maskbytes; i++) { 409 /* high nibble */ 410 mask += bit = _t[maskdata[i] >> 4]; 411 good &= _g[maskdata[i] >> 4]; 412 if (zeroes && bit) 413 good = 0; 414 if (bit == 0) 415 zeroes = 1; 416 /* low nibble */ 417 mask += bit = _t[maskdata[i] & 0xf]; 418 good &= _g[maskdata[i] & 0xf]; 419 if (zeroes && bit) 420 good = 0; 421 if (bit == 0) 422 zeroes = 1; 423 } 424 425 /* 426 * Always return the number of bits found, but as a negative 427 * if the mask wasn't one we like. 428 */ 429 return good ? mask : -mask; 430 } 431 432 char * 433 netmask_string(const struct sockaddr *mask, int len, int family) 434 { 435 static char smask[INET6_ADDRSTRLEN]; 436 struct sockaddr_in nsin; 437 struct sockaddr_in6 nsin6; 438 439 if (len >= 0) 440 snprintf(smask, sizeof(smask), "%d", len); 441 else { 442 switch (family) { 443 case AF_INET: 444 memset(&nsin, 0, sizeof(nsin)); 445 memcpy(&nsin, mask, mask->sa_len); 446 snprintf(smask, sizeof(smask), "%s", 447 inet_ntoa(nsin.sin_addr)); 448 break; 449 case AF_INET6: 450 memset(&nsin6, 0, sizeof(nsin6)); 451 memcpy(&nsin6, mask, mask->sa_len); 452 inet_ntop(family, &nsin6.sin6_addr, smask, 453 sizeof(smask)); 454 break; 455 default: 456 snprintf(smask, sizeof(smask), "%s", any_ntoa(mask)); 457 } 458 } 459 460 return smask; 461 } 462 463 const char * 464 routename(const struct sockaddr *sa, struct sockaddr *nm, int flags) 465 { 466 const char *cp; 467 static char line[50]; 468 struct hostent *hp; 469 static char domain[MAXHOSTNAMELEN + 1]; 470 static int first = 1; 471 struct in_addr in; 472 int nml; 473 474 if ((flags & RTF_HOST) == 0) 475 return netname(sa, nm); 476 477 if (first) { 478 first = 0; 479 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 480 (cp = strchr(domain, '.'))) 481 (void)strlcpy(domain, cp + 1, sizeof(domain)); 482 else 483 domain[0] = 0; 484 } 485 486 if (sa->sa_len == 0) 487 strlcpy(line, "default", sizeof(line)); 488 else switch (sa->sa_family) { 489 490 case AF_INET: 491 in = ((const struct sockaddr_in *)sa)->sin_addr; 492 nml = netmask_length(nm, AF_INET); 493 494 cp = 0; 495 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) { 496 if (nml == 0) 497 cp = "default"; 498 else { 499 static char notdefault[sizeof(NOTDEFSTRING)]; 500 501 snprintf(notdefault, sizeof(notdefault), 502 "0.0.0.0/%s", 503 netmask_string(nm, nml, AF_INET)); 504 cp = notdefault; 505 } 506 } 507 if (cp == 0 && !nflag) { 508 hp = gethostbyaddr((char *)&in, sizeof(struct in_addr), 509 AF_INET); 510 if (hp) { 511 char *ccp; 512 if ((ccp = strchr(hp->h_name, '.')) && 513 !strcmp(ccp + 1, domain)) 514 *ccp = '\0'; 515 cp = hp->h_name; 516 } 517 } 518 if (cp) 519 (void)strlcpy(line, cp, sizeof(line)); 520 else 521 (void)strlcpy(line, inet_ntoa(in), sizeof(line)); 522 break; 523 524 case AF_LINK: 525 return link_ntoa((const struct sockaddr_dl *)sa); 526 527 #ifdef INET6 528 case AF_INET6: 529 { 530 struct sockaddr_in6 sin6; 531 int niflags; 532 char nihost[NI_MAXHOST]; 533 534 niflags = 0; 535 if (nflag) 536 niflags |= NI_NUMERICHOST; 537 memset(&sin6, 0, sizeof(sin6)); 538 memcpy(&sin6, sa, sa->sa_len); 539 sin6.sin6_len = sizeof(struct sockaddr_in6); 540 sin6.sin6_family = AF_INET6; 541 inet6_getscopeid(&sin6, INET6_IS_ADDR_LINKLOCAL| 542 INET6_IS_ADDR_MC_LINKLOCAL); 543 nml = netmask_length(nm, AF_INET6); 544 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 545 if (nml == 0) 546 strlcpy(line, "::", sizeof(line)); 547 else 548 /* noncontiguous never happens in ipv6 */ 549 snprintf(line, sizeof(line), "::/%d", nml); 550 } 551 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 552 nihost, sizeof(nihost), NULL, 0, niflags) != 0) 553 strlcpy(line, "invalid", sizeof(line)); 554 else { 555 char *ccp; 556 if (!nflag && (ccp = strchr(nihost, '.')) && 557 strcmp(ccp + 1, domain) == 0) 558 *ccp = '\0'; 559 strlcpy(line, nihost, sizeof(line)); 560 } 561 break; 562 } 563 #endif 564 565 #ifndef SMALL 566 case AF_APPLETALK: 567 (void)snprintf(line, sizeof(line), "atalk %d.%d", 568 ((const struct sockaddr_at *)sa)->sat_addr.s_net, 569 ((const struct sockaddr_at *)sa)->sat_addr.s_node); 570 break; 571 case AF_MPLS: 572 { 573 union mpls_shim ms; 574 const union mpls_shim *pms; 575 size_t psize = sizeof(struct sockaddr_mpls), len; 576 577 ms.s_addr =((const struct sockaddr_mpls*)sa)->smpls_addr.s_addr; 578 ms.s_addr = ntohl(ms.s_addr); 579 580 len = snprintf(line, sizeof(line), "%u", ms.shim.label); 581 if (len >= sizeof(line)) 582 errx(1, "snprintf"); 583 pms = &((const struct sockaddr_mpls*)sa)->smpls_addr; 584 while (psize < sa->sa_len) { 585 size_t alen; 586 pms++; 587 ms.s_addr = ntohl(pms->s_addr); 588 alen = snprintf(line + len, sizeof(line) - len, " %u", 589 ms.shim.label); 590 if (alen >= sizeof(line) - len) 591 errx(1, "snprintf"); 592 len += alen; 593 psize += sizeof(ms); 594 } 595 break; 596 } 597 #endif /* SMALL */ 598 599 default: 600 (void)snprintf(line, sizeof line, "(%d) %s", 601 sa->sa_family, any_ntoa(sa)); 602 break; 603 604 } 605 return line; 606 } 607 608 /* 609 * Return the name of the network whose address is given. 610 * The address is assumed to be that of a net or subnet, not a host. 611 */ 612 const char * 613 netname(const struct sockaddr *sa, struct sockaddr *nm) 614 { 615 const char *cp = 0; 616 static char line[50]; 617 struct netent *np = 0; 618 u_int32_t net, mask; 619 u_int32_t i; 620 int subnetshift, nml; 621 struct in_addr in; 622 623 switch (sa->sa_family) { 624 625 case AF_INET: 626 in = ((const struct sockaddr_in *)sa)->sin_addr; 627 i = ntohl(in.s_addr); 628 nml = netmask_length(nm, AF_INET); 629 if (i == 0) { 630 if (nml == 0) 631 cp = "default"; 632 else { 633 static char notdefault[sizeof(NOTDEFSTRING)]; 634 635 snprintf(notdefault, sizeof(notdefault), 636 "0.0.0.0/%s", 637 netmask_string(nm, nml, AF_INET)); 638 cp = notdefault; 639 } 640 } 641 else if (!nflag) { 642 if (IN_CLASSA(i)) { 643 mask = IN_CLASSA_NET; 644 subnetshift = 8; 645 } else if (IN_CLASSB(i)) { 646 mask = IN_CLASSB_NET; 647 subnetshift = 8; 648 } else { 649 mask = IN_CLASSC_NET; 650 subnetshift = 4; 651 } 652 /* 653 * If there are more bits than the standard mask 654 * would suggest, subnets must be in use. 655 * Guess at the subnet mask, assuming reasonable 656 * width subnet fields. 657 */ 658 while (i &~ mask) 659 mask = (int32_t)mask >> subnetshift; 660 net = i & mask; 661 while ((mask & 1) == 0) 662 mask >>= 1, net >>= 1; 663 np = getnetbyaddr(net, AF_INET); 664 if (np) 665 cp = np->n_name; 666 } 667 if (cp) 668 (void)strlcpy(line, cp, sizeof(line)); 669 else { 670 if (nml == 0) 671 strlcpy(line, inet_ntoa(in), sizeof(line)); 672 else if (nml < 0) { 673 snprintf(line, sizeof(line), "%s&%s", 674 inet_ntoa(in), 675 netmask_string(nm, nml, AF_INET)); 676 } else { 677 snprintf(line, sizeof(line), "%s/%d", 678 inet_ntoa(in), nml); 679 } 680 } 681 break; 682 683 case AF_LINK: 684 return link_ntoa((const struct sockaddr_dl *)sa); 685 686 #ifdef INET6 687 case AF_INET6: 688 { 689 struct sockaddr_in6 sin6; 690 int niflags; 691 692 niflags = 0; 693 if (nflag) 694 niflags |= NI_NUMERICHOST; 695 memset(&sin6, 0, sizeof(sin6)); 696 memcpy(&sin6, sa, sa->sa_len); 697 sin6.sin6_len = sizeof(struct sockaddr_in6); 698 sin6.sin6_family = AF_INET6; 699 inet6_getscopeid(&sin6, INET6_IS_ADDR_LINKLOCAL| 700 INET6_IS_ADDR_MC_LINKLOCAL); 701 nml = netmask_length(nm, AF_INET6); 702 if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 703 if (nml == 0) 704 strlcpy(line, "::", sizeof(line)); 705 else 706 /* noncontiguous never happens in ipv6 */ 707 snprintf(line, sizeof(line), "::/%d", nml); 708 } 709 else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 710 line, sizeof(line), NULL, 0, niflags) != 0) 711 strlcpy(line, "invalid", sizeof(line)); 712 break; 713 } 714 #endif 715 716 #ifndef SMALL 717 case AF_APPLETALK: 718 (void)snprintf(line, sizeof(line), "atalk %d.%d", 719 ((const struct sockaddr_at *)sa)->sat_addr.s_net, 720 ((const struct sockaddr_at *)sa)->sat_addr.s_node); 721 break; 722 #endif /* SMALL */ 723 724 default: 725 (void)snprintf(line, sizeof line, "af %d: %s", 726 sa->sa_family, any_ntoa(sa)); 727 break; 728 } 729 return line; 730 } 731 732 static const char * 733 route_strerror(int error) 734 { 735 736 switch (error) { 737 case ESRCH: 738 return "not in table"; 739 case EBUSY: 740 return "entry in use"; 741 case ENOBUFS: 742 return "routing table overflow"; 743 default: 744 return strerror(error); 745 } 746 } 747 748 static void 749 set_metric(const char *value, int key) 750 { 751 int flag = 0; 752 uint64_t noval, *valp = &noval; 753 754 switch (key) { 755 #define caseof(x, y, z) \ 756 case x: valp = (uint64_t *)&rt_metrics.z; flag = y; break 757 caseof(K_MTU, RTV_MTU, rmx_mtu); 758 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 759 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 760 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 761 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 762 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 763 caseof(K_RTT, RTV_RTT, rmx_rtt); 764 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 765 } 766 rtm_inits |= flag; 767 if (lockrest || locking) 768 rt_metrics.rmx_locks |= flag; 769 if (locking) 770 locking = 0; 771 *valp = strtoul(value, NULL, 0); 772 } 773 774 static int 775 newroute(int argc, char *const *argv) 776 { 777 const char *cmd, *dest = "", *gateway = ""; 778 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 779 int key; 780 struct hostent *hp = 0; 781 struct sou sou, *soup = &sou; 782 783 sou.so_dst = calloc(1, sizeof(union sockunion)); 784 sou.so_gate = calloc(1, sizeof(union sockunion)); 785 sou.so_mask = calloc(1, sizeof(union sockunion)); 786 sou.so_genmask = calloc(1, sizeof(union sockunion)); 787 sou.so_ifa = calloc(1, sizeof(union sockunion)); 788 sou.so_ifp = calloc(1, sizeof(union sockunion)); 789 sou.so_mpls = calloc(1, sizeof(union sockunion)); 790 791 if (sou.so_dst == NULL || sou.so_gate == NULL || sou.so_mask == NULL || 792 sou.so_genmask == NULL || sou.so_ifa == NULL || sou.so_ifp == NULL || 793 sou.so_mpls == NULL) 794 errx(EXIT_FAILURE, "Cannot allocate memory"); 795 796 cmd = argv[0]; 797 af = AF_UNSPEC; 798 if (*cmd != 'g') { 799 /* Don't want to read back our messages */ 800 prog_shutdown(sock, SHUT_RD); 801 } 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_MPLS: 837 af = AF_MPLS; 838 aflen = sizeof(struct sockaddr_mpls); 839 break; 840 case K_TAG: 841 if (!--argc) 842 usage(1+*argv); 843 af = AF_MPLS; 844 aflen = sizeof(struct sockaddr_mpls); 845 (void)getaddr(RTA_TAG, *++argv, 0, soup); 846 break; 847 #endif /* SMALL */ 848 849 case K_IFACE: 850 case K_INTERFACE: 851 iflag++; 852 break; 853 case K_NOSTATIC: 854 flags &= ~RTF_STATIC; 855 break; 856 case K_LLINFO: 857 flags |= RTF_LLINFO; 858 break; 859 case K_LOCK: 860 locking = 1; 861 break; 862 case K_LOCKREST: 863 lockrest = 1; 864 break; 865 case K_HOST: 866 forcehost++; 867 break; 868 case K_REJECT: 869 flags |= RTF_REJECT; 870 break; 871 case K_NOREJECT: 872 flags &= ~RTF_REJECT; 873 break; 874 case K_BLACKHOLE: 875 flags |= RTF_BLACKHOLE; 876 break; 877 case K_NOBLACKHOLE: 878 flags &= ~RTF_BLACKHOLE; 879 break; 880 case K_CLONED: 881 flags |= RTF_CLONED; 882 break; 883 case K_NOCLONED: 884 flags &= ~RTF_CLONED; 885 break; 886 case K_PROTO1: 887 flags |= RTF_PROTO1; 888 break; 889 case K_PROTO2: 890 flags |= RTF_PROTO2; 891 break; 892 case K_PROXY: 893 flags |= RTF_ANNOUNCE; 894 break; 895 case K_CLONING: 896 flags |= RTF_CLONING; 897 break; 898 case K_NOCLONING: 899 flags &= ~RTF_CLONING; 900 break; 901 case K_XRESOLVE: 902 flags |= RTF_XRESOLVE; 903 break; 904 case K_STATIC: 905 flags |= RTF_STATIC; 906 break; 907 case K_IFA: 908 if (!--argc) 909 usage(1+*argv); 910 (void)getaddr(RTA_IFA, *++argv, 0, soup); 911 break; 912 case K_IFP: 913 if (!--argc) 914 usage(1+*argv); 915 (void)getaddr(RTA_IFP, *++argv, 0, soup); 916 break; 917 case K_GENMASK: 918 if (!--argc) 919 usage(1+*argv); 920 (void)getaddr(RTA_GENMASK, *++argv, 0, soup); 921 break; 922 case K_GATEWAY: 923 if (!--argc) 924 usage(1+*argv); 925 (void)getaddr(RTA_GATEWAY, *++argv, 0, soup); 926 break; 927 case K_DST: 928 if (!--argc) 929 usage(1+*argv); 930 ishost = getaddr(RTA_DST, *++argv, &hp, soup); 931 dest = *argv; 932 break; 933 case K_NETMASK: 934 if (!--argc) 935 usage(1+*argv); 936 (void)getaddr(RTA_NETMASK, *++argv, 0, soup); 937 /* FALLTHROUGH */ 938 case K_NET: 939 forcenet++; 940 break; 941 case K_PREFIXLEN: 942 if (!--argc) 943 usage(1+*argv); 944 ishost = prefixlen(*++argv, soup); 945 break; 946 case K_MTU: 947 case K_HOPCOUNT: 948 case K_EXPIRE: 949 case K_RECVPIPE: 950 case K_SENDPIPE: 951 case K_SSTHRESH: 952 case K_RTT: 953 case K_RTTVAR: 954 if (!--argc) 955 usage(1+*argv); 956 set_metric(*++argv, key); 957 break; 958 default: 959 usage(1+*argv); 960 } 961 } else { 962 if ((rtm_addrs & RTA_DST) == 0) { 963 dest = *argv; 964 ishost = getaddr(RTA_DST, *argv, &hp, soup); 965 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 966 gateway = *argv; 967 (void)getaddr(RTA_GATEWAY, *argv, &hp, soup); 968 } else { 969 ret = atoi(*argv); 970 971 if (ret == 0) { 972 if (strcmp(*argv, "0") == 0) { 973 if (!qflag) { 974 warnx("%s, %s", 975 "old usage of trailing 0", 976 "assuming route to if"); 977 } 978 } else 979 usage(NULL); 980 iflag = 1; 981 continue; 982 } else if (ret > 0 && ret < 10) { 983 if (!qflag) { 984 warnx("%s, %s", 985 "old usage of trailing digit", 986 "assuming route via gateway"); 987 } 988 iflag = 0; 989 continue; 990 } 991 (void)getaddr(RTA_NETMASK, *argv, 0, soup); 992 } 993 } 994 } 995 if ((rtm_addrs & RTA_DST) == 0) 996 errx(EXIT_FAILURE, "missing destination specification"); 997 if (*cmd == 'a' && (rtm_addrs & RTA_GATEWAY) == 0) 998 errx(EXIT_FAILURE, "missing gateway specification"); 999 if (forcehost && forcenet) 1000 errx(EXIT_FAILURE, "-host and -net conflict"); 1001 else if (forcehost) 1002 ishost = 1; 1003 else if (forcenet) 1004 ishost = 0; 1005 flags |= RTF_UP; 1006 if (ishost) 1007 flags |= RTF_HOST; 1008 if (iflag == 0) 1009 flags |= RTF_GATEWAY; 1010 for (attempts = 1; ; attempts++) { 1011 errno = 0; 1012 if ((ret = rtmsg(*cmd, flags, soup)) == 0) 1013 break; 1014 if (errno != ENETUNREACH && errno != ESRCH) 1015 break; 1016 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 1017 hp->h_addr_list++; 1018 memmove(&soup->so_gate->sin.sin_addr, hp->h_addr_list[0], 1019 hp->h_length); 1020 } else 1021 break; 1022 } 1023 if (*cmd == 'g') 1024 return ret != 0; 1025 if (!qflag) { 1026 oerrno = errno; 1027 (void)printf("%s %s %s", cmd, ishost? "host" : "net", dest); 1028 if (*gateway) { 1029 (void)printf(": gateway %s", gateway); 1030 if (attempts > 1 && ret == 0 && af == AF_INET) 1031 (void)printf(" (%s)", 1032 inet_ntoa(soup->so_gate->sin.sin_addr)); 1033 } 1034 if (ret == 0) 1035 (void)printf("\n"); 1036 else 1037 (void)printf(": %s\n", route_strerror(oerrno)); 1038 } 1039 free(sou.so_dst); 1040 free(sou.so_gate); 1041 free(sou.so_mask); 1042 free(sou.so_genmask); 1043 free(sou.so_ifa); 1044 free(sou.so_ifp); 1045 free(sou.so_mpls); 1046 1047 return ret != 0; 1048 } 1049 1050 static void 1051 inet_makenetandmask(const u_int32_t net, struct sockaddr_in * const isin, 1052 struct sou *soup) 1053 { 1054 struct sockaddr_in *sin; 1055 u_int32_t addr, mask = 0; 1056 char *cp; 1057 1058 rtm_addrs |= RTA_NETMASK; 1059 if (net == 0) 1060 mask = addr = 0; 1061 else if (net < 128) { 1062 addr = net << IN_CLASSA_NSHIFT; 1063 mask = IN_CLASSA_NET; 1064 } else if (net < 192) { 1065 addr = net << IN_CLASSA_NSHIFT; 1066 mask = IN_CLASSB_NET; 1067 } else if (net < 224) { 1068 addr = net << IN_CLASSA_NSHIFT; 1069 mask = IN_CLASSC_NET; 1070 } else if (net < 256) { 1071 addr = net << IN_CLASSA_NSHIFT; 1072 mask = IN_CLASSD_NET; 1073 } else if (net < 49152) { /* 192 * 256 */ 1074 addr = net << IN_CLASSB_NSHIFT; 1075 mask = IN_CLASSB_NET; 1076 } else if (net < 57344) { /* 224 * 256 */ 1077 addr = net << IN_CLASSB_NSHIFT; 1078 mask = IN_CLASSC_NET; 1079 } else if (net < 65536) { 1080 addr = net << IN_CLASSB_NSHIFT; 1081 mask = IN_CLASSB_NET; 1082 } else if (net < 14680064L) { /* 224 * 65536 */ 1083 addr = net << IN_CLASSC_NSHIFT; 1084 mask = IN_CLASSC_NET; 1085 } else if (net < 16777216L) { 1086 addr = net << IN_CLASSC_NSHIFT; 1087 mask = IN_CLASSD_NET; 1088 } else { 1089 addr = net; 1090 if ((addr & IN_CLASSA_HOST) == 0) 1091 mask = IN_CLASSA_NET; 1092 else if ((addr & IN_CLASSB_HOST) == 0) 1093 mask = IN_CLASSB_NET; 1094 else if ((addr & IN_CLASSC_HOST) == 0) 1095 mask = IN_CLASSC_NET; 1096 else 1097 mask = -1; 1098 } 1099 isin->sin_addr.s_addr = htonl(addr); 1100 sin = &soup->so_mask->sin; 1101 sin->sin_addr.s_addr = htonl(mask); 1102 sin->sin_len = 0; 1103 sin->sin_family = 0; 1104 cp = (char *)(&sin->sin_addr + 1); 1105 while (*--cp == 0 && cp > (char *)sin) 1106 ; 1107 sin->sin_len = 1 + cp - (char *)sin; 1108 sin->sin_family = AF_INET; 1109 } 1110 1111 #ifdef INET6 1112 /* 1113 * XXX the function may need more improvement... 1114 */ 1115 static int 1116 inet6_makenetandmask(const struct sockaddr_in6 * const sin6, struct sou *soup) 1117 { 1118 const char *plen; 1119 struct in6_addr in6; 1120 1121 plen = NULL; 1122 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 1123 sin6->sin6_scope_id == 0) { 1124 plen = "0"; 1125 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 1126 /* aggregatable global unicast - RFC2374 */ 1127 memset(&in6, 0, sizeof(in6)); 1128 if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8)) 1129 plen = "64"; 1130 } 1131 1132 if (!plen || strcmp(plen, "128") == 0) 1133 return 1; 1134 else { 1135 rtm_addrs |= RTA_NETMASK; 1136 (void)prefixlen(plen, soup); 1137 return 0; 1138 } 1139 } 1140 #endif 1141 1142 /* 1143 * Interpret an argument as a network address of some kind, 1144 * returning 1 if a host address, 0 if a network address. 1145 */ 1146 static int 1147 getaddr(int which, const char *s, struct hostent **hpp, struct sou *soup) 1148 { 1149 sup su; 1150 struct hostent *hp; 1151 struct netent *np; 1152 u_int32_t val; 1153 char *t; 1154 int afamily; /* local copy of af so we can change it */ 1155 1156 if (af == AF_UNSPEC) { 1157 af = AF_INET; 1158 aflen = sizeof(struct sockaddr_in); 1159 } 1160 afamily = af; 1161 rtm_addrs |= which; 1162 switch (which) { 1163 case RTA_DST: 1164 su = soup->so_dst; 1165 break; 1166 case RTA_GATEWAY: 1167 su = soup->so_gate; 1168 break; 1169 case RTA_NETMASK: 1170 su = soup->so_mask; 1171 break; 1172 case RTA_GENMASK: 1173 su = soup->so_genmask; 1174 break; 1175 case RTA_IFP: 1176 su = soup->so_ifp; 1177 afamily = AF_LINK; 1178 break; 1179 case RTA_IFA: 1180 su = soup->so_ifa; 1181 su->sa.sa_family = af; 1182 break; 1183 #ifndef SMALL 1184 case RTA_TAG: 1185 su = soup->so_mpls; 1186 afamily = AF_MPLS; 1187 break; 1188 #endif 1189 default: 1190 su = NULL; 1191 usage("Internal Error"); 1192 /*NOTREACHED*/ 1193 } 1194 su->sa.sa_len = aflen; 1195 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 1196 if (strcmp(s, "default") == 0) { 1197 switch (which) { 1198 case RTA_DST: 1199 forcenet++; 1200 (void)getaddr(RTA_NETMASK, s, 0, soup); 1201 break; 1202 case RTA_NETMASK: 1203 case RTA_GENMASK: 1204 su->sa.sa_len = 0; 1205 } 1206 return 0; 1207 } 1208 switch (afamily) { 1209 #ifdef INET6 1210 case AF_INET6: 1211 { 1212 struct addrinfo hints, *res; 1213 char *slash = 0; 1214 1215 if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0) 1216 *slash = '\0'; 1217 memset(&hints, 0, sizeof(hints)); 1218 hints.ai_family = afamily; /*AF_INET6*/ 1219 hints.ai_flags = AI_NUMERICHOST; 1220 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1221 if (getaddrinfo(s, "0", &hints, &res) != 0) { 1222 hints.ai_flags = 0; 1223 if (slash) { 1224 *slash = '/'; 1225 slash = 0; 1226 } 1227 if (getaddrinfo(s, "0", &hints, &res) != 0) 1228 errx(EXIT_FAILURE, "%s: bad value", s); 1229 } 1230 if (slash) 1231 *slash = '/'; 1232 if (sizeof(su->sin6) != res->ai_addrlen) 1233 errx(EXIT_FAILURE, "%s: bad value", s); 1234 if (res->ai_next) { 1235 errx(EXIT_FAILURE, 1236 "%s: address resolved to multiple values", s); 1237 } 1238 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1239 freeaddrinfo(res); 1240 inet6_putscopeid(&su->sin6, INET6_IS_ADDR_LINKLOCAL| 1241 INET6_IS_ADDR_MC_LINKLOCAL); 1242 if (hints.ai_flags == AI_NUMERICHOST) { 1243 if (slash) 1244 return prefixlen(slash + 1, soup); 1245 if (which == RTA_DST) 1246 return inet6_makenetandmask(&su->sin6, soup); 1247 return 0; 1248 } else 1249 return 1; 1250 } 1251 #endif 1252 1253 case PF_ROUTE: 1254 su->sa.sa_len = sizeof(*su); 1255 sockaddr(s, &su->sa); 1256 return 1; 1257 1258 #ifndef SMALL 1259 case AF_APPLETALK: 1260 t = strchr (s, '.'); 1261 if (!t) { 1262 badataddr: 1263 errx(EXIT_FAILURE, "bad address: %s", s); 1264 } 1265 val = atoi (s); 1266 if (val > 65535) 1267 goto badataddr; 1268 su->sat.sat_addr.s_net = val; 1269 val = atoi (t); 1270 if (val > 256) 1271 goto badataddr; 1272 su->sat.sat_addr.s_node = val; 1273 rtm_addrs |= RTA_NETMASK; 1274 return(forcehost || su->sat.sat_addr.s_node != 0); 1275 case AF_MPLS: 1276 if (which == RTA_DST) 1277 soup->so_dst = readtag(su, s); 1278 else if (which == RTA_TAG) 1279 soup->so_mpls = readtag(su, s); 1280 else 1281 errx(EXIT_FAILURE, "MPLS can be used only as " 1282 "DST or TAG"); 1283 return 1; 1284 #endif 1285 1286 case AF_LINK: 1287 link_addr(s, &su->sdl); 1288 return 1; 1289 1290 case AF_INET: 1291 default: 1292 break; 1293 } 1294 1295 if (hpp == NULL) 1296 hpp = &hp; 1297 *hpp = NULL; 1298 1299 if ((t = strchr(s, '/')) != NULL && which == RTA_DST) { 1300 *t = '\0'; 1301 if (forcenet == 0) { 1302 if ((val = inet_addr(s)) != INADDR_NONE) { 1303 inet_makenetandmask(htonl(val), &su->sin, soup); 1304 return prefixlen(&t[1], soup); 1305 } 1306 } else { 1307 if ((val = inet_network(s)) != INADDR_NONE) { 1308 inet_makenetandmask(val, &su->sin, soup); 1309 return prefixlen(&t[1], soup); 1310 } 1311 } 1312 *t = '/'; 1313 } 1314 if (inet_aton(s, &su->sin.sin_addr) && 1315 (which != RTA_DST || forcenet == 0)) { 1316 val = su->sin.sin_addr.s_addr; 1317 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1318 return 1; 1319 else { 1320 val = ntohl(val); 1321 goto netdone; 1322 } 1323 } 1324 if ((val = inet_network(s)) != INADDR_NONE || 1325 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1326 netdone: 1327 if (which == RTA_DST) 1328 inet_makenetandmask(val, &su->sin, soup); 1329 return 0; 1330 } 1331 hp = gethostbyname(s); 1332 if (hp) { 1333 *hpp = hp; 1334 su->sin.sin_family = hp->h_addrtype; 1335 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1336 return 1; 1337 } 1338 errx(EXIT_FAILURE, "%s: bad value", s); 1339 /*NOTREACHED*/ 1340 } 1341 1342 #ifndef SMALL 1343 static sup 1344 readtag(sup su, const char *s) 1345 { 1346 char *p, *n, *norig; 1347 int mplssize = 0; 1348 sup retsu = su; 1349 1350 n = strdup(s); 1351 if (n == NULL) 1352 errx(EXIT_FAILURE, "%s: Cannot allocate memory", s); 1353 norig = n; 1354 for (uint i = 0; i < strlen(n); i++) 1355 if(n[i] == ',') 1356 mplssize++; 1357 1358 #define MPLS_NEW_SIZE (sizeof(struct sockaddr_mpls) + \ 1359 mplssize * sizeof(union mpls_shim)) 1360 1361 if (mplssize != 0 && sizeof(union sockunion) < MPLS_NEW_SIZE) { 1362 free(su); 1363 retsu = malloc(MPLS_NEW_SIZE); 1364 retsu->smpls.smpls_family = AF_MPLS; 1365 } 1366 retsu->smpls.smpls_len = MPLS_NEW_SIZE; 1367 mplssize = 0; 1368 while ((p = strchr(n, ',')) != NULL) { 1369 p[0] = '\0'; 1370 addtag(retsu, n, mplssize); 1371 n = p + 1; 1372 mplssize++; 1373 } 1374 addtag(retsu, n, mplssize); 1375 1376 free(norig); 1377 return retsu; 1378 } 1379 1380 static void 1381 addtag(sup su, const char *s, int where) 1382 { 1383 union mpls_shim *ms = &su->smpls.smpls_addr; 1384 1385 if (atoi(s) < 0 || atoi(s) >= (1 << 20)) 1386 errx(EXIT_FAILURE, "%s: Bad tag", s); 1387 ms[where].s_addr = 0; 1388 ms[where].shim.label = atoi(s); 1389 ms[where].s_addr = htonl(ms[where].s_addr); 1390 } 1391 #endif /* SMALL */ 1392 1393 int 1394 prefixlen(const char *s, struct sou *soup) 1395 { 1396 int len = atoi(s), q, r; 1397 int max; 1398 1399 switch (af) { 1400 case AF_INET: 1401 max = sizeof(struct in_addr) * 8; 1402 break; 1403 #ifdef INET6 1404 case AF_INET6: 1405 max = sizeof(struct in6_addr) * 8; 1406 break; 1407 #endif 1408 default: 1409 errx(EXIT_FAILURE, "prefixlen is not supported with af %d", af); 1410 /*NOTREACHED*/ 1411 } 1412 1413 rtm_addrs |= RTA_NETMASK; 1414 if (len < -1 || len > max) 1415 errx(EXIT_FAILURE, "%s: bad value", s); 1416 1417 q = len >> 3; 1418 r = len & 7; 1419 switch (af) { 1420 case AF_INET: 1421 memset(soup->so_mask, 0, sizeof(*soup->so_mask)); 1422 soup->so_mask->sin.sin_family = AF_INET; 1423 soup->so_mask->sin.sin_len = sizeof(struct sockaddr_in); 1424 soup->so_mask->sin.sin_addr.s_addr = (len == 0 ? 0 1425 : htonl(0xffffffff << (32 - len))); 1426 break; 1427 #ifdef INET6 1428 case AF_INET6: 1429 soup->so_mask->sin6.sin6_family = AF_INET6; 1430 soup->so_mask->sin6.sin6_len = sizeof(struct sockaddr_in6); 1431 memset(&soup->so_mask->sin6.sin6_addr, 0, 1432 sizeof(soup->so_mask->sin6.sin6_addr)); 1433 if (q > 0) 1434 memset(&soup->so_mask->sin6.sin6_addr, 0xff, q); 1435 if (r > 0) 1436 *((u_char *)&soup->so_mask->sin6.sin6_addr + q) = 1437 (0xff00 >> r) & 0xff; 1438 break; 1439 #endif 1440 } 1441 return len == max; 1442 } 1443 1444 #ifndef SMALL 1445 static void 1446 interfaces(void) 1447 { 1448 size_t needed; 1449 int mib[6]; 1450 char *buf, *lim, *next; 1451 struct rt_msghdr *rtm; 1452 1453 mib[0] = CTL_NET; 1454 mib[1] = PF_ROUTE; 1455 mib[2] = 0; /* protocol */ 1456 mib[3] = 0; /* wildcard address family */ 1457 mib[4] = NET_RT_IFLIST; 1458 mib[5] = 0; /* no flags */ 1459 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1460 err(EXIT_FAILURE, "route-sysctl-estimate"); 1461 if (needed) { 1462 if ((buf = malloc(needed)) == NULL) 1463 err(EXIT_FAILURE, "malloc"); 1464 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 1465 err(EXIT_FAILURE, 1466 "actual retrieval of interface table"); 1467 } 1468 lim = buf + needed; 1469 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1470 rtm = (struct rt_msghdr *)next; 1471 print_rtmsg(rtm, rtm->rtm_msglen); 1472 } 1473 free(buf); 1474 } 1475 } 1476 1477 static void 1478 monitor(void) 1479 { 1480 int n; 1481 union { 1482 char msg[2048]; 1483 struct rt_msghdr hdr; 1484 } u; 1485 1486 verbose = 1; 1487 if (debugonly) { 1488 interfaces(); 1489 exit(0); 1490 } 1491 for(;;) { 1492 time_t now; 1493 n = prog_read(sock, &u, sizeof(u)); 1494 now = time(NULL); 1495 (void)printf("got message of size %d on %s", n, ctime(&now)); 1496 print_rtmsg(&u.hdr, n); 1497 } 1498 } 1499 1500 #endif /* SMALL */ 1501 1502 1503 struct { 1504 struct rt_msghdr m_rtm; 1505 char m_space[512]; 1506 } m_rtmsg; 1507 1508 static int 1509 rtmsg(int cmd, int flags, struct sou *soup) 1510 { 1511 static int seq; 1512 int rlen; 1513 char *cp = m_rtmsg.m_space; 1514 int l; 1515 1516 #define NEXTADDR(w, u) \ 1517 if (rtm_addrs & (w)) {\ 1518 l = RT_ROUNDUP(u->sa.sa_len); memmove(cp, u, l); cp += l;\ 1519 if (verbose && ! shortoutput) sodump(u,#u);\ 1520 } 1521 1522 errno = 0; 1523 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1524 if (cmd == 'a') 1525 cmd = RTM_ADD; 1526 else if (cmd == 'c') 1527 cmd = RTM_CHANGE; 1528 else if (cmd == 'g') { 1529 #ifdef SMALL 1530 return -1; 1531 #else /* SMALL */ 1532 cmd = RTM_GET; 1533 if (soup->so_ifp->sa.sa_family == AF_UNSPEC) { 1534 soup->so_ifp->sa.sa_family = AF_LINK; 1535 soup->so_ifp->sa.sa_len = sizeof(struct sockaddr_dl); 1536 rtm_addrs |= RTA_IFP; 1537 } 1538 #endif /* SMALL */ 1539 } else 1540 cmd = RTM_DELETE; 1541 #define rtm m_rtmsg.m_rtm 1542 rtm.rtm_type = cmd; 1543 rtm.rtm_flags = flags; 1544 rtm.rtm_version = RTM_VERSION; 1545 rtm.rtm_seq = ++seq; 1546 rtm.rtm_addrs = rtm_addrs; 1547 rtm.rtm_rmx = rt_metrics; 1548 rtm.rtm_inits = rtm_inits; 1549 1550 if (rtm_addrs & RTA_NETMASK) 1551 mask_addr(soup); 1552 NEXTADDR(RTA_DST, soup->so_dst); 1553 NEXTADDR(RTA_GATEWAY, soup->so_gate); 1554 NEXTADDR(RTA_NETMASK, soup->so_mask); 1555 NEXTADDR(RTA_GENMASK, soup->so_genmask); 1556 NEXTADDR(RTA_IFP, soup->so_ifp); 1557 NEXTADDR(RTA_IFA, soup->so_ifa); 1558 #ifndef SMALL 1559 NEXTADDR(RTA_TAG, soup->so_mpls); 1560 #endif 1561 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1562 if (verbose && ! shortoutput) { 1563 if (rtm_addrs) 1564 putchar('\n'); 1565 print_rtmsg(&rtm, l); 1566 } 1567 if (debugonly) 1568 return 0; 1569 if ((rlen = prog_write(sock, (char *)&m_rtmsg, l)) < 0) { 1570 warnx("writing to routing socket: %s", route_strerror(errno)); 1571 return -1; 1572 } 1573 if (rlen < l) { 1574 warnx("write to routing socket, got %d for rlen", rlen); 1575 return 1; 1576 } 1577 #ifndef SMALL 1578 if (cmd == RTM_GET) { 1579 do { 1580 l = prog_read(sock, 1581 (char *)&m_rtmsg, sizeof(m_rtmsg)); 1582 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1583 if (l < 0) 1584 err(EXIT_FAILURE, "read from routing socket"); 1585 else 1586 return print_getmsg(&rtm, l, soup); 1587 } 1588 #endif /* SMALL */ 1589 #undef rtm 1590 return 0; 1591 } 1592 1593 static void 1594 mask_addr(struct sou *soup) 1595 { 1596 int olen = soup->so_mask->sa.sa_len; 1597 char *cp1 = olen + (char *)soup->so_mask, *cp2; 1598 1599 for (soup->so_mask->sa.sa_len = 0; cp1 > (char *)soup->so_mask; ) 1600 if (*--cp1 != 0) { 1601 soup->so_mask->sa.sa_len = 1 + cp1 - (char *)soup->so_mask; 1602 break; 1603 } 1604 if ((rtm_addrs & RTA_DST) == 0) 1605 return; 1606 switch (soup->so_dst->sa.sa_family) { 1607 case AF_INET: 1608 #ifdef INET6 1609 case AF_INET6: 1610 #endif 1611 #ifndef SMALL 1612 case AF_APPLETALK: 1613 #endif /* SMALL */ 1614 case 0: 1615 return; 1616 } 1617 cp1 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_dst; 1618 cp2 = soup->so_dst->sa.sa_len + 1 + (char *)soup->so_dst; 1619 while (cp2 > cp1) 1620 *--cp2 = 0; 1621 cp2 = soup->so_mask->sa.sa_len + 1 + (char *)soup->so_mask; 1622 while (cp1 > soup->so_dst->sa.sa_data) 1623 *--cp1 &= *--cp2; 1624 } 1625 1626 const char * const msgtypes[] = { 1627 [RTM_ADD] = "RTM_ADD: Add Route", 1628 [RTM_DELETE] = "RTM_DELETE: Delete Route", 1629 [RTM_CHANGE] = "RTM_CHANGE: Change Metrics or flags", 1630 [RTM_GET] = "RTM_GET: Report Metrics", 1631 [RTM_LOSING] = "RTM_LOSING: Kernel Suspects Partitioning", 1632 [RTM_REDIRECT] = "RTM_REDIRECT: Told to use different route", 1633 [RTM_MISS] = "RTM_MISS: Lookup failed on this address", 1634 [RTM_LOCK] = "RTM_LOCK: fix specified metrics", 1635 [RTM_OLDADD] = "RTM_OLDADD: caused by SIOCADDRT", 1636 [RTM_OLDDEL] = "RTM_OLDDEL: caused by SIOCDELRT", 1637 [RTM_RESOLVE] = "RTM_RESOLVE: Route created by cloning", 1638 [RTM_NEWADDR] = "RTM_NEWADDR: address being added to iface", 1639 [RTM_DELADDR] = "RTM_DELADDR: address being removed from iface", 1640 [RTM_OOIFINFO] = "RTM_OOIFINFO: iface status change (pre-1.5)", 1641 [RTM_OIFINFO] = "RTM_OIFINFO: iface status change (pre-64bit time)", 1642 [RTM_IFANNOUNCE] = "RTM_IFANNOUNCE: iface arrival/departure", 1643 [RTM_IEEE80211] = "RTM_IEEE80211: IEEE80211 wireless event", 1644 [RTM_IFINFO] = "RTM_IFINFO: iface status change", 1645 [RTM_CHGADDR] = "RTM_CHGADDR: address being changed on iface", 1646 }; 1647 1648 const char metricnames[] = 1649 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1650 const char routeflags[] = 1651 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1"; 1652 const char ifnetflags[] = 1653 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1654 const char addrnames[] = 1655 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD\011TAG"; 1656 1657 1658 #ifndef SMALL 1659 static const char * 1660 linkstate(struct if_msghdr *ifm) 1661 { 1662 static char buf[64]; 1663 1664 switch (ifm->ifm_data.ifi_link_state) { 1665 case LINK_STATE_UNKNOWN: 1666 return "carrier: unknown"; 1667 case LINK_STATE_DOWN: 1668 return "carrier: no carrier"; 1669 case LINK_STATE_UP: 1670 return "carrier: active"; 1671 default: 1672 (void)snprintf(buf, sizeof(buf), "carrier: 0x%x", 1673 ifm->ifm_data.ifi_link_state); 1674 return buf; 1675 } 1676 } 1677 #endif /* SMALL */ 1678 1679 static void 1680 print_rtmsg(struct rt_msghdr *rtm, int msglen) 1681 { 1682 struct if_msghdr *ifm; 1683 struct ifa_msghdr *ifam; 1684 struct if_announcemsghdr *ifan; 1685 union { 1686 struct ieee80211_join_event join; 1687 struct ieee80211_leave_event leave; 1688 struct ieee80211_replay_event replay; 1689 struct ieee80211_michael_event michael; 1690 } ev; 1691 size_t evlen = 0; 1692 1693 if (verbose == 0) 1694 return; 1695 if (rtm->rtm_version != RTM_VERSION) { 1696 (void)printf("routing message version %d not understood\n", 1697 rtm->rtm_version); 1698 return; 1699 } 1700 if (msgtypes[rtm->rtm_type]) 1701 (void)printf("%s: ", msgtypes[rtm->rtm_type]); 1702 else 1703 (void)printf("#%d: ", rtm->rtm_type); 1704 (void)printf("len %d, ", rtm->rtm_msglen); 1705 switch (rtm->rtm_type) { 1706 case RTM_IFINFO: 1707 ifm = (struct if_msghdr *)rtm; 1708 (void)printf("if# %d, %s, flags: ", ifm->ifm_index, 1709 #ifdef SMALL 1710 "" 1711 #else 1712 linkstate(ifm) 1713 #endif /* SMALL */ 1714 ); 1715 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1716 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1717 break; 1718 case RTM_NEWADDR: 1719 case RTM_DELADDR: 1720 case RTM_CHGADDR: 1721 ifam = (struct ifa_msghdr *)rtm; 1722 (void)printf("metric %d, flags: ", ifam->ifam_metric); 1723 bprintf(stdout, ifam->ifam_flags, routeflags); 1724 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1725 break; 1726 case RTM_IEEE80211: 1727 ifan = (struct if_announcemsghdr *)rtm; 1728 (void)printf("if# %d, what: ", ifan->ifan_index); 1729 switch (ifan->ifan_what) { 1730 case RTM_IEEE80211_ASSOC: 1731 printf("associate"); 1732 break; 1733 case RTM_IEEE80211_REASSOC: 1734 printf("re-associate"); 1735 break; 1736 case RTM_IEEE80211_DISASSOC: 1737 printf("disassociate"); 1738 break; 1739 case RTM_IEEE80211_SCAN: 1740 printf("scan complete"); 1741 break; 1742 case RTM_IEEE80211_JOIN: 1743 evlen = sizeof(ev.join); 1744 printf("join"); 1745 break; 1746 case RTM_IEEE80211_LEAVE: 1747 evlen = sizeof(ev.leave); 1748 printf("leave"); 1749 break; 1750 case RTM_IEEE80211_MICHAEL: 1751 evlen = sizeof(ev.michael); 1752 printf("michael"); 1753 break; 1754 case RTM_IEEE80211_REPLAY: 1755 evlen = sizeof(ev.replay); 1756 printf("replay"); 1757 break; 1758 default: 1759 evlen = 0; 1760 printf("#%d", ifan->ifan_what); 1761 break; 1762 } 1763 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1764 printf(" (truncated)\n"); 1765 break; 1766 } 1767 (void)memcpy(&ev, (ifan + 1), evlen); 1768 switch (ifan->ifan_what) { 1769 case RTM_IEEE80211_JOIN: 1770 case RTM_IEEE80211_LEAVE: 1771 printf(" mac %" PRIETHER, 1772 PRIETHER_ARGS(ev.join.iev_addr)); 1773 break; 1774 case RTM_IEEE80211_REPLAY: 1775 case RTM_IEEE80211_MICHAEL: 1776 printf(" src %" PRIETHER " dst %" PRIETHER 1777 " cipher %" PRIu8 " keyix %" PRIu8, 1778 PRIETHER_ARGS(ev.replay.iev_src), 1779 PRIETHER_ARGS(ev.replay.iev_dst), 1780 ev.replay.iev_cipher, 1781 ev.replay.iev_keyix); 1782 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1783 printf(" key rsc %#" PRIx64 1784 " frame rsc %#" PRIx64, 1785 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1786 } 1787 break; 1788 default: 1789 break; 1790 } 1791 printf("\n"); 1792 break; 1793 case RTM_IFANNOUNCE: 1794 ifan = (struct if_announcemsghdr *)rtm; 1795 (void)printf("if# %d, what: ", ifan->ifan_index); 1796 switch (ifan->ifan_what) { 1797 case IFAN_ARRIVAL: 1798 printf("arrival"); 1799 break; 1800 case IFAN_DEPARTURE: 1801 printf("departure"); 1802 break; 1803 default: 1804 printf("#%d", ifan->ifan_what); 1805 break; 1806 } 1807 printf("\n"); 1808 break; 1809 default: 1810 (void)printf("pid %d, seq %d, errno %d, flags: ", 1811 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1812 bprintf(stdout, rtm->rtm_flags, routeflags); 1813 pmsg_common(rtm); 1814 } 1815 } 1816 1817 #ifndef SMALL 1818 static int 1819 print_getmsg(struct rt_msghdr *rtm, int msglen, struct sou *soup) 1820 { 1821 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL, *mpls = NULL; 1822 struct sockaddr_dl *ifp = NULL; 1823 struct sockaddr *sa; 1824 char *cp; 1825 int i; 1826 1827 if (! shortoutput) { 1828 (void)printf(" route to: %s\n", 1829 routename(&soup->so_dst->sa, NULL, RTF_HOST)); 1830 } 1831 if (rtm->rtm_version != RTM_VERSION) { 1832 warnx("routing message version %d not understood", 1833 rtm->rtm_version); 1834 return 1; 1835 } 1836 if (rtm->rtm_msglen > msglen) { 1837 warnx("message length mismatch, in packet %d, returned %d", 1838 rtm->rtm_msglen, msglen); 1839 } 1840 if (rtm->rtm_errno) { 1841 warnx("RTM_GET: %s (errno %d)", 1842 strerror(rtm->rtm_errno), rtm->rtm_errno); 1843 return 1; 1844 } 1845 cp = ((char *)(rtm + 1)); 1846 if (rtm->rtm_addrs) 1847 for (i = 1; i; i <<= 1) 1848 if (i & rtm->rtm_addrs) { 1849 sa = (struct sockaddr *)cp; 1850 switch (i) { 1851 case RTA_DST: 1852 dst = sa; 1853 break; 1854 case RTA_GATEWAY: 1855 gate = sa; 1856 break; 1857 case RTA_NETMASK: 1858 mask = sa; 1859 break; 1860 case RTA_IFP: 1861 if (sa->sa_family == AF_LINK && 1862 ((struct sockaddr_dl *)sa)->sdl_nlen) 1863 ifp = (struct sockaddr_dl *)sa; 1864 break; 1865 case RTA_IFA: 1866 ifa = sa; 1867 break; 1868 case RTA_TAG: 1869 mpls = sa; 1870 break; 1871 } 1872 RT_ADVANCE(cp, sa); 1873 } 1874 if (dst && mask) 1875 mask->sa_family = dst->sa_family; /* XXX */ 1876 if (dst && ! shortoutput) 1877 (void)printf("destination: %s\n", 1878 routename(dst, mask, RTF_HOST)); 1879 if (mask && ! shortoutput) { 1880 int savenflag = nflag; 1881 1882 nflag = 1; 1883 (void)printf(" mask: %s\n", 1884 routename(mask, NULL, RTF_HOST)); 1885 nflag = savenflag; 1886 } 1887 if (gate && rtm->rtm_flags & RTF_GATEWAY) { 1888 const char *name; 1889 1890 name = routename(gate, NULL, RTF_HOST); 1891 if (shortoutput) { 1892 if (*name == '\0') 1893 return 1; 1894 (void)printf("%s\n", name); 1895 } else 1896 (void)printf(" gateway: %s\n", name); 1897 } 1898 if (mpls) { 1899 const char *name; 1900 name = routename(mpls, NULL, RTF_HOST); 1901 if(shortoutput) { 1902 if (*name == '\0') 1903 return 1; 1904 printf("%s\n", name); 1905 } else 1906 printf(" Tag: %s\n", name); 1907 } 1908 1909 if (ifa && ! shortoutput) 1910 (void)printf(" local addr: %s\n", 1911 routename(ifa, NULL, RTF_HOST)); 1912 if (ifp && ! shortoutput) 1913 (void)printf(" interface: %.*s\n", 1914 ifp->sdl_nlen, ifp->sdl_data); 1915 if (! shortoutput) { 1916 (void)printf(" flags: "); 1917 bprintf(stdout, rtm->rtm_flags, routeflags); 1918 } 1919 1920 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1921 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1922 1923 if (! shortoutput) { 1924 (void)printf("\n%s\n", "\ 1925 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1926 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1927 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1928 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1929 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1930 printf("%8"PRId64"%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1931 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1932 printf("%8"PRId64"%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1933 if (rtm->rtm_rmx.rmx_expire) 1934 rtm->rtm_rmx.rmx_expire -= time(0); 1935 printf("%8"PRId64"%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1936 } 1937 #undef lock 1938 #undef msec 1939 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1940 1941 if (shortoutput) 1942 return (rtm->rtm_addrs & RTF_GATEWAY) == 0; 1943 else if (verbose) 1944 pmsg_common(rtm); 1945 else if (rtm->rtm_addrs &~ RTA_IGN) { 1946 (void)printf("sockaddrs: "); 1947 bprintf(stdout, rtm->rtm_addrs, addrnames); 1948 putchar('\n'); 1949 } 1950 return 0; 1951 #undef RTA_IGN 1952 } 1953 #endif /* SMALL */ 1954 1955 void 1956 pmsg_common(struct rt_msghdr *rtm) 1957 { 1958 (void)printf("\nlocks: "); 1959 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1960 (void)printf(" inits: "); 1961 bprintf(stdout, rtm->rtm_inits, metricnames); 1962 pmsg_addrs((char *)(rtm + 1), rtm->rtm_addrs); 1963 } 1964 1965 static void 1966 extract_addrs(const char *cp, int addrs, const struct sockaddr *sa[], int *nmfp) 1967 { 1968 int i, nmf = -1; 1969 1970 for (i = 0; i < RTAX_MAX; i++) { 1971 if ((1 << i) & addrs) { 1972 sa[i] = (const struct sockaddr *)cp; 1973 if ((i == RTAX_DST || i == RTAX_IFA) && 1974 nmf == -1) 1975 nmf = sa[i]->sa_family; 1976 RT_ADVANCE(cp, sa[i]); 1977 } else 1978 sa[i] = NULL; 1979 } 1980 1981 if (nmfp != NULL) 1982 *nmfp = nmf; 1983 } 1984 1985 static void 1986 pmsg_addrs(const char *cp, int addrs) 1987 { 1988 const struct sockaddr *sa[RTAX_MAX]; 1989 int i, nmf; 1990 1991 if (addrs != 0) { 1992 (void)printf("\nsockaddrs: "); 1993 bprintf(stdout, addrs, addrnames); 1994 (void)putchar('\n'); 1995 extract_addrs(cp, addrs, sa, &nmf); 1996 for (i = 0; i < RTAX_MAX; i++) { 1997 if (sa[i] == NULL) 1998 continue; 1999 2000 if (i == RTAX_NETMASK && sa[i]->sa_len) 2001 (void)printf(" %s", 2002 netmask_string(sa[i], -1, nmf)); 2003 else 2004 (void)printf(" %s", 2005 routename(sa[i], NULL, RTF_HOST)); 2006 } 2007 } 2008 (void)putchar('\n'); 2009 (void)fflush(stdout); 2010 } 2011 2012 static void 2013 bprintf(FILE *fp, int b, const char *f) 2014 { 2015 int i; 2016 int gotsome = 0; 2017 const uint8_t *s = (const uint8_t *)f; 2018 2019 if (b == 0) { 2020 fputs("none", fp); 2021 return; 2022 } 2023 while ((i = *s++) != 0) { 2024 if (b & (1 << (i-1))) { 2025 if (gotsome == 0) 2026 i = '<'; 2027 else 2028 i = ','; 2029 (void)putc(i, fp); 2030 gotsome = 1; 2031 for (; (i = *s) > 32; s++) 2032 (void)putc(i, fp); 2033 } else 2034 while (*s > 32) 2035 s++; 2036 } 2037 if (gotsome) 2038 (void)putc('>', fp); 2039 } 2040 2041 int 2042 keyword(const char *cp) 2043 { 2044 struct keytab *kt = keywords; 2045 2046 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 2047 kt++; 2048 return kt->kt_i; 2049 } 2050 2051 static void 2052 sodump(sup su, const char *which) 2053 { 2054 #ifdef INET6 2055 char ntop_buf[NI_MAXHOST]; 2056 #endif 2057 2058 switch (su->sa.sa_family) { 2059 case AF_INET: 2060 (void)printf("%s: inet %s; ", 2061 which, inet_ntoa(su->sin.sin_addr)); 2062 break; 2063 #ifndef SMALL 2064 case AF_APPLETALK: 2065 (void)printf("%s: atalk %d.%d; ", 2066 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 2067 break; 2068 #endif 2069 case AF_LINK: 2070 (void)printf("%s: link %s; ", 2071 which, link_ntoa(&su->sdl)); 2072 break; 2073 #ifdef INET6 2074 case AF_INET6: 2075 (void)printf("%s: inet6 %s; ", 2076 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 2077 ntop_buf, sizeof(ntop_buf))); 2078 break; 2079 #endif 2080 #ifndef SMALL 2081 case AF_MPLS: 2082 { 2083 union mpls_shim ms; 2084 const union mpls_shim *pms; 2085 int psize = sizeof(struct sockaddr_mpls); 2086 2087 ms.s_addr = ntohl(su->smpls.smpls_addr.s_addr); 2088 printf("%s: mpls %u; ", 2089 which, ms.shim.label); 2090 2091 pms = &su->smpls.smpls_addr; 2092 while(psize < su->smpls.smpls_len) { 2093 pms++; 2094 ms.s_addr = ntohl(pms->s_addr); 2095 printf("%u; ", ms.shim.label); 2096 psize += sizeof(ms); 2097 } 2098 break; 2099 } 2100 #endif /* SMALL */ 2101 default: 2102 (void)printf("%s: (%d) %s; ", 2103 which, su->sa.sa_family, any_ntoa(&su->sa)); 2104 } 2105 (void)fflush(stdout); 2106 } 2107 2108 /* States*/ 2109 #define VIRGIN 0 2110 #define GOTONE 1 2111 #define GOTTWO 2 2112 /* Inputs */ 2113 #define DIGIT (4*0) 2114 #define END (4*1) 2115 #define DELIM (4*2) 2116 2117 static void 2118 sockaddr(const char *addr, struct sockaddr *sa) 2119 { 2120 char *cp = (char *)sa; 2121 int size = sa->sa_len; 2122 char *cplim = cp + size; 2123 int byte = 0, state = VIRGIN, new = 0; 2124 2125 (void)memset(cp, 0, size); 2126 cp++; 2127 do { 2128 if ((*addr >= '0') && (*addr <= '9')) { 2129 new = *addr - '0'; 2130 } else if ((*addr >= 'a') && (*addr <= 'f')) { 2131 new = *addr - 'a' + 10; 2132 } else if ((*addr >= 'A') && (*addr <= 'F')) { 2133 new = *addr - 'A' + 10; 2134 } else if (*addr == 0) 2135 state |= END; 2136 else 2137 state |= DELIM; 2138 addr++; 2139 switch (state /* | INPUT */) { 2140 case GOTTWO | DIGIT: 2141 *cp++ = byte; /*FALLTHROUGH*/ 2142 case VIRGIN | DIGIT: 2143 state = GOTONE; byte = new; continue; 2144 case GOTONE | DIGIT: 2145 state = GOTTWO; byte = new + (byte << 4); continue; 2146 default: /* | DELIM */ 2147 state = VIRGIN; *cp++ = byte; byte = 0; continue; 2148 case GOTONE | END: 2149 case GOTTWO | END: 2150 *cp++ = byte; /* FALLTHROUGH */ 2151 case VIRGIN | END: 2152 break; 2153 } 2154 break; 2155 } while (cp < cplim); 2156 sa->sa_len = cp - (char *)sa; 2157 } 2158