1/* 2 * Copyright (c) 2008-2013 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29 * Copyright (c) 1983, 1989, 1991, 1993 30 * The Regents of the University of California. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by the University of 43 * California, Berkeley and its contributors. 44 * 4. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 */ 60 61#include <sys/cdefs.h> 62 63#ifndef lint 64__unused static const char copyright[] = 65"@(#) Copyright (c) 1983, 1989, 1991, 1993\n\ 66 The Regents of the University of California. All rights reserved.\n"; 67#endif /* not lint */ 68 69#include <sys/param.h> 70#include <sys/file.h> 71#include <sys/socket.h> 72#include <sys/ioctl.h> 73#include <sys/sysctl.h> 74#include <sys/types.h> 75 76#include <net/if.h> 77#include <net/route.h> 78#include <net/if_dl.h> 79#include <netinet/in.h> 80#include <arpa/inet.h> 81#include <netdb.h> 82 83#include <ctype.h> 84#include <err.h> 85#include <errno.h> 86#include <paths.h> 87#include <stdio.h> 88#include <stdlib.h> 89#include <string.h> 90#include <sysexits.h> 91#include <unistd.h> 92#include <ifaddrs.h> 93 94struct keytab { 95 char *kt_cp; 96 int kt_i; 97} keywords[] = { 98#include "keywords.h" 99 {0, 0} 100}; 101 102union sockunion { 103 struct sockaddr sa; 104 struct sockaddr_in sin; 105#ifdef INET6 106 struct sockaddr_in6 sin6; 107#endif 108 struct sockaddr_dl sdl; 109 struct sockaddr_storage ss; /* added to avoid memory overrun */ 110} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 111 112typedef union sockunion *sup; 113int pid, rtm_addrs, uid; 114int s; 115int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 116int iflag, verbose, aflen = sizeof (struct sockaddr_in); 117int locking, lockrest, debugonly; 118struct rt_metrics rt_metrics; 119u_long rtm_inits; 120unsigned int ifscope; 121 122static const char *route_strerror(int); 123const char *routename(), *netname(); 124void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 125void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 126int getaddr(), rtmsg(), x25_makemask(); 127int prefixlen(); 128extern char *iso_ntoa(); 129 130void usage __P((const char *)) __dead2; 131 132void 133usage(cp) 134 const char *cp; 135{ 136 if (cp) 137 warnx("bad keyword: %s", cp); 138 (void) fprintf(stderr, 139 "usage: route [-dnqtv] command [[modifiers] args]\n"); 140 exit(EX_USAGE); 141 /* NOTREACHED */ 142} 143 144#define ROUNDUP(a) \ 145 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(uint32_t) - 1))) : sizeof(uint32_t)) 146#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 147 148int 149main(argc, argv) 150 int argc; 151 char **argv; 152{ 153 int ch; 154 155 if (argc < 2) 156 usage((char *)NULL); 157 158 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 159 switch(ch) { 160 case 'n': 161 nflag = 1; 162 break; 163 case 'q': 164 qflag = 1; 165 break; 166 case 'v': 167 verbose = 1; 168 break; 169 case 't': 170 tflag = 1; 171 break; 172 case 'd': 173 debugonly = 1; 174 break; 175 case '?': 176 default: 177 usage((char *)NULL); 178 } 179 argc -= optind; 180 argv += optind; 181 182 pid = getpid(); 183 uid = geteuid(); 184 if (tflag) 185 s = open(_PATH_DEVNULL, O_WRONLY, 0); 186 else 187 s = socket(PF_ROUTE, SOCK_RAW, 0); 188 if (s < 0) 189 err(EX_OSERR, "socket"); 190 setuid(uid); 191 if (*argv) 192 switch (keyword(*argv)) { 193 case K_GET: 194 uid = 0; 195 /* FALLTHROUGH */ 196 197 case K_CHANGE: 198 case K_ADD: 199 case K_DELETE: 200 newroute(argc, argv); 201 exit(0); 202 /* NOTREACHED */ 203 204 case K_MONITOR: 205 monitor(); 206 /* NOTREACHED */ 207 208 case K_FLUSH: 209 flushroutes(argc, argv); 210 exit(0); 211 /* NOTREACHED */ 212 } 213 usage(*argv); 214 /* NOTREACHED */ 215} 216 217/* 218 * Purge all entries in the routing tables not 219 * associated with network interfaces. 220 */ 221void 222flushroutes(argc, argv) 223 int argc; 224 char *argv[]; 225{ 226 size_t needed; 227 int mib[6], rlen, seqno; 228 char *buf, *next, *lim; 229 register struct rt_msghdr *rtm; 230 231 if (uid) { 232 errx(EX_NOPERM, "must be root to alter routing table"); 233 } 234 shutdown(s, 0); /* Don't want to read back our messages */ 235 if (argc > 1) { 236 argv++; 237 if (argc == 2 && **argv == '-') 238 switch (keyword(*argv + 1)) { 239 case K_INET: 240 af = AF_INET; 241 break; 242#ifdef INET6 243 case K_INET6: 244 af = AF_INET6; 245 break; 246#endif 247 case K_LINK: 248 af = AF_LINK; 249 break; 250 default: 251 goto bad; 252 } else 253bad: usage(*argv); 254 } 255 mib[0] = CTL_NET; 256 mib[1] = PF_ROUTE; 257 mib[2] = 0; /* protocol */ 258 mib[3] = 0; /* wildcard address family */ 259 mib[4] = NET_RT_DUMP; 260 mib[5] = 0; /* no flags */ 261 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 262 err(EX_OSERR, "route-sysctl-estimate"); 263 if ((buf = malloc(needed)) == NULL) 264 errx(EX_OSERR, "malloc failed"); 265 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 266 err(EX_OSERR, "route-sysctl-get"); 267 lim = buf + needed; 268 if (verbose) 269 (void) printf("Examining routing table from sysctl\n"); 270 seqno = 0; /* ??? */ 271 for (next = buf; next < lim; next += rtm->rtm_msglen) { 272 rtm = (struct rt_msghdr *)next; 273 if (verbose) 274 print_rtmsg(rtm, rtm->rtm_msglen); 275 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 276 continue; 277 if (af) { 278 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 279 280 if (sa->sa_family != af) 281 continue; 282 } 283 if (debugonly) 284 continue; 285 rtm->rtm_type = RTM_DELETE; 286 rtm->rtm_seq = seqno; 287 rlen = write(s, next, rtm->rtm_msglen); 288 if (rlen < (int)rtm->rtm_msglen) { 289 warn("write to routing socket"); 290 (void) printf("got only %d for rlen\n", rlen); 291 break; 292 } 293 seqno++; 294 if (qflag) 295 continue; 296 if (verbose) 297 print_rtmsg(rtm, rlen); 298 else { 299 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 300 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 301 routename(sa) : netname(sa)); 302 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 303 (void) printf("%-20.20s ", routename(sa)); 304 (void) printf("done\n"); 305 } 306 } 307} 308 309const char * 310routename(sa) 311 struct sockaddr *sa; 312{ 313 register char *cp; 314 static char line[MAXHOSTNAMELEN + 1]; 315 struct hostent *hp; 316 static char domain[MAXHOSTNAMELEN + 1]; 317 static int first = 1; 318 319 if (first) { 320 first = 0; 321 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 322 (cp = index(domain, '.'))) { 323 domain[MAXHOSTNAMELEN] = '\0'; 324 (void) memmove(domain, cp + 1, strlen(cp + 1) + 1); 325 } else 326 domain[0] = 0; 327 } 328 329 if (sa->sa_len == 0) 330 strlcpy(line, "default", sizeof(line)); 331 else switch (sa->sa_family) { 332 333 case AF_INET: 334 { struct in_addr in; 335 in = ((struct sockaddr_in *)sa)->sin_addr; 336 337 cp = 0; 338 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 339 cp = "default"; 340 if (cp == 0 && !nflag) { 341 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 342 AF_INET); 343 if (hp) { 344 if ((cp = index(hp->h_name, '.')) && 345 !strcmp(cp + 1, domain)) 346 *cp = 0; 347 cp = hp->h_name; 348 } 349 } 350 if (cp) { 351 strncpy(line, cp, sizeof(line) - 1); 352 line[sizeof(line) - 1] = '\0'; 353 } else { 354 /* XXX - why not inet_ntoa()? */ 355#define C(x) (unsigned)((x) & 0xff) 356 in.s_addr = ntohl(in.s_addr); 357 (void) snprintf(line, sizeof(line), "%u.%u.%u.%u", C(in.s_addr >> 24), 358 C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr)); 359 } 360 break; 361 } 362 363#ifdef INET6 364 case AF_INET6: 365 { 366 struct sockaddr_in6 sin6; /* use static var for safety */ 367 int niflags = 0; 368#ifdef NI_WITHSCOPEID 369 niflags = NI_WITHSCOPEID; 370#endif 371 372 memset(&sin6, 0, sizeof(sin6)); 373 memcpy(&sin6, sa, sa->sa_len); 374 sin6.sin6_len = sizeof(struct sockaddr_in6); 375 sin6.sin6_family = AF_INET6; 376#ifdef __KAME__ 377 if (sa->sa_len == sizeof(struct sockaddr_in6) && 378 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 379 IN6_IS_ADDR_MC_NODELOCAL(&sin6.sin6_addr) || 380 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 381 sin6.sin6_scope_id == 0) { 382 sin6.sin6_scope_id = 383 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 384 sin6.sin6_addr.s6_addr[2] = 0; 385 sin6.sin6_addr.s6_addr[3] = 0; 386 } 387#endif 388 if (nflag) 389 niflags |= NI_NUMERICHOST; 390 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 391 line, sizeof(line), NULL, 0, niflags) != 0) 392 strncpy(line, "invalid", sizeof(line)); 393 394 return(line); 395 } 396#endif 397 398 case AF_LINK: 399 return (link_ntoa((struct sockaddr_dl *)sa)); 400 401 default: 402 { u_short *s = (u_short *)sa; 403 u_short *slim = s + ((sa->sa_len + 1) >> 1); 404 char *cp = line + snprintf(line, sizeof(line), "(%d)", sa->sa_family); 405 char *cpe = line + sizeof(line); 406 407 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 408 cp += snprintf(cp, cpe - cp, " %x", *s); 409 break; 410 } 411 } 412 return (line); 413} 414 415/* 416 * Return the name of the network whose address is given. 417 * The address is assumed to be that of a net or subnet, not a host. 418 */ 419const char * 420netname(sa) 421 struct sockaddr *sa; 422{ 423 char *cp = 0; 424 static char line[MAXHOSTNAMELEN + 1]; 425 struct netent *np = 0; 426 in_addr_t net, mask; 427 register in_addr_t i; 428 int subnetshift; 429 430 switch (sa->sa_family) { 431 432 case AF_INET: 433 { struct in_addr in; 434 in = ((struct sockaddr_in *)sa)->sin_addr; 435 436 i = in.s_addr = ntohl(in.s_addr); 437 if (in.s_addr == 0) 438 cp = "default"; 439 else if (!nflag) { 440 if (IN_CLASSA(i)) { 441 mask = IN_CLASSA_NET; 442 subnetshift = 8; 443 } else if (IN_CLASSB(i)) { 444 mask = IN_CLASSB_NET; 445 subnetshift = 8; 446 } else { 447 mask = IN_CLASSC_NET; 448 subnetshift = 4; 449 } 450 /* 451 * If there are more bits than the standard mask 452 * would suggest, subnets must be in use. 453 * Guess at the subnet mask, assuming reasonable 454 * width subnet fields. 455 */ 456 while (in.s_addr &~ mask) 457 mask = mask >> subnetshift; 458 net = in.s_addr & mask; 459 while ((mask & 1) == 0) 460 mask >>= 1, net >>= 1; 461 np = getnetbyaddr(net, AF_INET); 462 if (np) 463 cp = np->n_name; 464 } 465 if (cp) 466 strncpy(line, cp, sizeof(line)); 467 else if ((in.s_addr & 0xffffff) == 0) 468 (void) snprintf(line, sizeof(line), "%u", C(in.s_addr >> 24)); 469 else if ((in.s_addr & 0xffff) == 0) 470 (void) snprintf(line, sizeof(line), "%u.%u", C(in.s_addr >> 24), 471 C(in.s_addr >> 16)); 472 else if ((in.s_addr & 0xff) == 0) 473 (void) snprintf(line, sizeof(line), "%u.%u.%u", C(in.s_addr >> 24), 474 C(in.s_addr >> 16), C(in.s_addr >> 8)); 475 else 476 (void) snprintf(line, sizeof(line), "%u.%u.%u.%u", C(in.s_addr >> 24), 477 C(in.s_addr >> 16), C(in.s_addr >> 8), 478 C(in.s_addr)); 479 break; 480 } 481 482#ifdef INET6 483 case AF_INET6: 484 { 485 struct sockaddr_in6 sin6; /* use static var for safety */ 486 int niflags = 0; 487#ifdef NI_WITHSCOPEID 488 niflags = NI_WITHSCOPEID; 489#endif 490 491 memset(&sin6, 0, sizeof(sin6)); 492 memcpy(&sin6, sa, sa->sa_len); 493 sin6.sin6_len = sizeof(struct sockaddr_in6); 494 sin6.sin6_family = AF_INET6; 495#ifdef __KAME__ 496 if (sa->sa_len == sizeof(struct sockaddr_in6) && 497 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 498 IN6_IS_ADDR_MC_NODELOCAL(&sin6.sin6_addr) || 499 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 500 sin6.sin6_scope_id == 0) { 501 sin6.sin6_scope_id = 502 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 503 sin6.sin6_addr.s6_addr[2] = 0; 504 sin6.sin6_addr.s6_addr[3] = 0; 505 } 506#endif 507 if (nflag) 508 niflags |= NI_NUMERICHOST; 509 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 510 line, sizeof(line), NULL, 0, niflags) != 0) 511 strncpy(line, "invalid", sizeof(line)); 512 513 return(line); 514 } 515#endif 516 517 case AF_LINK: 518 return (link_ntoa((struct sockaddr_dl *)sa)); 519 520 521 default: 522 { u_short *s = (u_short *)sa->sa_data; 523 u_short *slim = s + ((sa->sa_len + 1)>>1); 524 char *cp = line + snprintf(line, sizeof(line), "af %d:", sa->sa_family); 525 char *cpe = line + sizeof(line); 526 527 while (s < slim && cp < cpe) 528 cp += snprintf(cp, cpe - cp, " %x", *s++); 529 break; 530 } 531 } 532 return (line); 533} 534 535static const char * 536route_strerror(int error) 537{ 538 539 switch (error) { 540 case ESRCH: 541 return "not in table"; 542 case EBUSY: 543 return "entry in use"; 544 case ENOBUFS: 545 return "routing table overflow"; 546 default: 547 return (strerror(error)); 548 } 549} 550 551void 552set_metric(value, key) 553 char *value; 554 int key; 555{ 556 int flag = 0; 557 u_int noval, *valp = &noval; 558 559 switch (key) { 560#define caseof(x, y, z) case x: valp = (u_int *)&rt_metrics.z; flag = y; break 561 caseof(K_MTU, RTV_MTU, rmx_mtu); 562 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 563 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 564 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 565 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 566 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 567 caseof(K_RTT, RTV_RTT, rmx_rtt); 568 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 569 } 570 rtm_inits |= flag; 571 if (lockrest || locking) 572 rt_metrics.rmx_locks |= flag; 573 if (locking) 574 locking = 0; 575 *valp = atoi(value); 576} 577 578void 579newroute(argc, argv) 580 int argc; 581 register char **argv; 582{ 583 char *cmd, *dest = "", *gateway = ""; 584 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 585 int key; 586 struct hostent *hp = 0; 587 588 if (uid) { 589 errx(EX_NOPERM, "must be root to alter routing table"); 590 } 591 cmd = argv[0]; 592 if (*cmd != 'g') 593 shutdown(s, 0); /* Don't want to read back our messages */ 594 while (--argc > 0) { 595 if (**(++argv)== '-') { 596 switch (key = keyword(1 + *argv)) { 597 case K_LINK: 598 af = AF_LINK; 599 aflen = sizeof(struct sockaddr_dl); 600 break; 601 case K_INET: 602 af = AF_INET; 603 aflen = sizeof(struct sockaddr_in); 604 break; 605#ifdef INET6 606 case K_INET6: 607 af = AF_INET6; 608 aflen = sizeof(struct sockaddr_in6); 609 break; 610#endif 611 case K_SA: 612 af = PF_ROUTE; 613 aflen = sizeof(union sockunion); 614 break; 615 case K_IFACE: 616 case K_INTERFACE: 617 iflag++; 618 break; 619 case K_NOSTATIC: 620 flags &= ~RTF_STATIC; 621 break; 622 case K_LLINFO: 623 flags |= RTF_LLINFO; 624 break; 625 case K_LOCK: 626 locking = 1; 627 break; 628 case K_LOCKREST: 629 lockrest = 1; 630 break; 631 case K_HOST: 632 forcehost++; 633 break; 634 case K_REJECT: 635 flags |= RTF_REJECT; 636 break; 637 case K_BLACKHOLE: 638 flags |= RTF_BLACKHOLE; 639 break; 640 case K_PROTO1: 641 flags |= RTF_PROTO1; 642 break; 643 case K_PROTO2: 644 flags |= RTF_PROTO2; 645 break; 646 case K_CLONING: 647 flags |= RTF_CLONING; 648 break; 649 case K_XRESOLVE: 650 flags |= RTF_XRESOLVE; 651 break; 652 case K_STATIC: 653 flags |= RTF_STATIC; 654 break; 655 case K_IFA: 656 if (!--argc) 657 usage((char *)NULL); 658 (void) getaddr(RTA_IFA, *++argv, 0); 659 break; 660 case K_IFP: 661 if (!--argc) 662 usage((char *)NULL); 663 (void) getaddr(RTA_IFP, *++argv, 0); 664 break; 665 case K_GENMASK: 666 if (!--argc) 667 usage((char *)NULL); 668 (void) getaddr(RTA_GENMASK, *++argv, 0); 669 break; 670 case K_GATEWAY: 671 if (!--argc) 672 usage((char *)NULL); 673 (void) getaddr(RTA_GATEWAY, *++argv, 0); 674 break; 675 case K_DST: 676 if (!--argc) 677 usage((char *)NULL); 678 ishost = getaddr(RTA_DST, *++argv, &hp); 679 dest = *argv; 680 break; 681 case K_NETMASK: 682 if (!--argc) 683 usage((char *)NULL); 684 (void) getaddr(RTA_NETMASK, *++argv, 0); 685 /* FALLTHROUGH */ 686 case K_NET: 687 forcenet++; 688 break; 689 case K_PREFIXLEN: 690 if (!--argc) 691 usage((char *)NULL); 692 if (prefixlen(*++argv) == -1) { 693 forcenet = 0; 694 ishost = 1; 695 } else { 696 forcenet = 1; 697 ishost = 0; 698 } 699 break; 700 case K_MTU: 701 case K_HOPCOUNT: 702 case K_EXPIRE: 703 case K_RECVPIPE: 704 case K_SENDPIPE: 705 case K_SSTHRESH: 706 case K_RTT: 707 case K_RTTVAR: 708 if (!--argc) 709 usage((char *)NULL); 710 set_metric(*++argv, key); 711 break; 712 case K_IFSCOPE: 713 if (!--argc) 714 usage((char *)NULL); 715 if ((ifscope = if_nametoindex(*++argv)) != 0) 716 flags |= RTF_IFSCOPE; 717 else 718 errx(1, "bad interface name"); 719 break; 720 default: 721 usage(1+*argv); 722 } 723 } else { 724 if ((rtm_addrs & RTA_DST) == 0) { 725 dest = *argv; 726 ishost = getaddr(RTA_DST, *argv, &hp); 727 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 728 gateway = *argv; 729 (void) getaddr(RTA_GATEWAY, *argv, &hp); 730 } else { 731 (void) getaddr(RTA_NETMASK, *argv, 0); 732 } 733 } 734 } 735 if (forcehost) { 736 ishost = 1; 737#ifdef INET6 738 if (af == AF_INET6) { 739 rtm_addrs &= ~RTA_NETMASK; 740 memset((void *)&so_mask, 0, sizeof(so_mask)); 741 } 742#endif 743 } 744 if (forcenet) 745 ishost = 0; 746 flags |= RTF_UP; 747 if (ishost) 748 flags |= RTF_HOST; 749 if (iflag == 0) 750 flags |= RTF_GATEWAY; 751 if (so_mask.sin.sin_family == AF_INET) { 752 // make sure the mask is contiguous 753 long i; 754 for (i = 0; i < 32; i++) 755 if (((so_mask.sin.sin_addr.s_addr) & ntohl((1 << i))) != 0) 756 break; 757 for (; i < 32; i++) 758 if (((so_mask.sin.sin_addr.s_addr) & ntohl((1 << i))) == 0) 759 errx(EX_NOHOST, "invalid mask: %s", inet_ntoa(so_mask.sin.sin_addr)); 760 } 761 for (attempts = 1; ; attempts++) { 762 errno = 0; 763 if ((ret = rtmsg(*cmd, flags)) == 0) 764 break; 765 if (errno != ENETUNREACH && errno != ESRCH) 766 break; 767 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 768 hp->h_addr_list++; 769 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr, 770 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 771 } else 772 break; 773 } 774 if (*cmd == 'g') 775 exit(0); 776 oerrno = errno; 777 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 778 if (*gateway) { 779 (void) printf(": gateway %s", gateway); 780 if (attempts > 1 && ret == 0 && af == AF_INET) 781 (void) printf(" (%s)", inet_ntoa(so_gate.sin.sin_addr)); 782 } 783 if (ret == 0) 784 (void) printf("\n"); 785 else { 786 (void)printf(": %s\n", route_strerror(oerrno)); 787 } 788} 789 790void 791inet_makenetandmask(net, sin, bits) 792 in_addr_t net, bits; 793 register struct sockaddr_in *sin; 794{ 795 in_addr_t addr, mask = 0; 796 register char *cp; 797 798 rtm_addrs |= RTA_NETMASK; 799 if (bits) { 800 addr = net; 801 mask = 0xffffffff << (32 - bits); 802 } else if (net == 0) 803 mask = addr = 0; 804 else if (net < 128) { 805 addr = net << IN_CLASSA_NSHIFT; 806 mask = IN_CLASSA_NET; 807 } else if (net < 65536) { 808 addr = net << IN_CLASSB_NSHIFT; 809 mask = IN_CLASSB_NET; 810 } else if (net < 16777216L) { 811 addr = net << IN_CLASSC_NSHIFT; 812 mask = IN_CLASSC_NET; 813 } else { 814 addr = net; 815 if ((addr & IN_CLASSA_HOST) == 0) 816 mask = IN_CLASSA_NET; 817 else if ((addr & IN_CLASSB_HOST) == 0) 818 mask = IN_CLASSB_NET; 819 else if ((addr & IN_CLASSC_HOST) == 0) 820 mask = IN_CLASSC_NET; 821 else 822 mask = -1; 823 } 824 sin->sin_addr.s_addr = htonl(addr); 825 sin = &so_mask.sin; 826 sin->sin_addr.s_addr = htonl(mask); 827 sin->sin_len = 0; 828 sin->sin_family = 0; 829 cp = (char *)(&sin->sin_addr + 1); 830 while (*--cp == 0 && cp > (char *)sin) 831 ; 832 sin->sin_len = 1 + cp - (char *)sin; 833} 834 835#ifdef INET6 836/* 837 * XXX the function may need more improvement... 838 */ 839static int 840inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen) 841{ 842 struct in6_addr in6; 843 844 if (plen == NULL) { 845 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 846 sin6->sin6_scope_id == 0) { 847 plen = "0"; 848 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 849 /* aggregatable global unicast - RFC2374 */ 850 memset(&in6, 0, sizeof(in6)); 851 if (!memcmp(&sin6->sin6_addr.s6_addr[8], 852 &in6.s6_addr[8], 8)) 853 plen = "64"; 854 } 855 } 856 857 if (plen == NULL || strcmp(plen, "128") == 0) 858 return (1); 859 rtm_addrs |= RTA_NETMASK; 860 prefixlen(plen); 861 return (0); 862} 863#endif 864 865/* 866 * Interpret an argument as a network address of some kind, 867 * returning 1 if a host address, 0 if a network address. 868 */ 869int 870getaddr(which, s, hpp) 871 int which; 872 char *s; 873 struct hostent **hpp; 874{ 875 register sup su = NULL; 876 struct hostent *hp; 877 struct netent *np; 878 in_addr_t val; 879 char *q; 880 int afamily; /* local copy of af so we can change it */ 881 882 if (af == 0) { 883 af = AF_INET; 884 aflen = sizeof(struct sockaddr_in); 885 } 886 afamily = af; 887 rtm_addrs |= which; 888 switch (which) { 889 case RTA_DST: 890 su = &so_dst; 891 break; 892 case RTA_GATEWAY: 893 su = &so_gate; 894 if (iflag) { 895 struct ifaddrs *ifap, *ifa; 896 struct sockaddr_dl *sdl = NULL; 897 898 if (getifaddrs(&ifap)) 899 err(1, "getifaddrs"); 900 901 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 902 if (ifa->ifa_addr->sa_family != AF_LINK) 903 continue; 904 905 if (strcmp(s, ifa->ifa_name)) 906 continue; 907 908 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 909 } 910 /* If we found it, then use it */ 911 if (sdl) { 912 /* 913 * Copy is safe since we have a 914 * sockaddr_storage member in sockunion{}. 915 * Note that we need to copy before calling 916 * freeifaddrs(). 917 */ 918 memcpy(&su->sdl, sdl, sdl->sdl_len); 919 } 920 freeifaddrs(ifap); 921 if (sdl) 922 return(1); 923 } 924 break; 925 case RTA_NETMASK: 926 su = &so_mask; 927 break; 928 case RTA_GENMASK: 929 su = &so_genmask; 930 break; 931 case RTA_IFP: 932 su = &so_ifp; 933 afamily = AF_LINK; 934 break; 935 case RTA_IFA: 936 su = &so_ifa; 937 break; 938 default: 939 usage("internal error"); 940 /*NOTREACHED*/ 941 } 942 su->sa.sa_len = aflen; 943 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 944 if (strcmp(s, "default") == 0) { 945 /* 946 * Default is net 0.0.0.0/0 947 */ 948 switch (which) { 949 case RTA_DST: 950 forcenet++; 951 /* bzero(su, sizeof(*su)); *//* for readability */ 952 (void) getaddr(RTA_NETMASK, s, 0); 953 break; 954 case RTA_NETMASK: 955 case RTA_GENMASK: 956 /* bzero(su, sizeof(*su)); *//* for readability */ 957 su->sa.sa_len = 0; 958 break; 959 } 960 return (0); 961 } 962 switch (afamily) { 963#ifdef INET6 964 case AF_INET6: 965 { 966 struct addrinfo hints, *res; 967 int ecode; 968 969 q = NULL; 970 if (which == RTA_DST && (q = strchr(s, '/')) != NULL) 971 *q = '\0'; 972 memset(&hints, 0, sizeof(hints)); 973 hints.ai_family = afamily; /*AF_INET6*/ 974 hints.ai_flags = AI_NUMERICHOST; 975 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 976 ecode = getaddrinfo(s, NULL, &hints, &res); 977 if (ecode != 0 || res->ai_family != AF_INET6 || 978 res->ai_addrlen != sizeof(su->sin6)) { 979 (void) fprintf(stderr, "%s: %s\n", s, 980 gai_strerror(ecode)); 981 exit(1); 982 } 983 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 984#ifdef __KAME__ 985 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 986 IN6_IS_ADDR_MC_NODELOCAL(&su->sin6.sin6_addr) || 987 IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) && 988 su->sin6.sin6_scope_id) { 989 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 990 htons(su->sin6.sin6_scope_id); 991 su->sin6.sin6_scope_id = 0; 992 } 993#endif 994 freeaddrinfo(res); 995 if (hints.ai_flags == AI_NUMERICHOST) { 996 if (q != NULL) 997 *q++ = '/'; 998 if (which == RTA_DST) 999 return (inet6_makenetandmask(&su->sin6, q)); 1000 return (0); 1001 } else { 1002 return (1); 1003 } 1004 } 1005#endif /* INET6 */ 1006 1007 case AF_LINK: 1008 link_addr(s, &su->sdl); 1009 return (1); 1010 1011 1012 case PF_ROUTE: 1013 su->sa.sa_len = sizeof(*su); 1014 sockaddr(s, &su->sa); 1015 return (1); 1016 1017 case AF_INET: 1018 default: 1019 break; 1020 } 1021 1022 if (hpp == NULL) 1023 hpp = &hp; 1024 *hpp = NULL; 1025 1026 q = strchr(s,'/'); 1027 if (q && which == RTA_DST) { 1028 *q = '\0'; 1029 if ((val = inet_addr(s)) != INADDR_NONE) { 1030 inet_makenetandmask( 1031 ntohl(val), &su->sin, strtoul(q+1, 0, 0)); 1032 return (0); 1033 } 1034 *q = '/'; 1035 } 1036 if ((which != RTA_DST || forcenet == 0) && 1037 (val = inet_addr(s)) != INADDR_NONE) { 1038 su->sin.sin_addr.s_addr = val; 1039 if (which != RTA_DST || 1040 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1041 return (1); 1042 else { 1043 val = ntohl(val); 1044 goto netdone; 1045 } 1046 } 1047 if (which == RTA_DST && forcehost == 0 && 1048 ((val = inet_network(s)) != INADDR_NONE || 1049 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) { 1050netdone: 1051 inet_makenetandmask(val, &su->sin, 0); 1052 return (0); 1053 } 1054 hp = gethostbyname(s); 1055 if (hp) { 1056 *hpp = hp; 1057 su->sin.sin_family = hp->h_addrtype; 1058 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, 1059 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1060 return (1); 1061 } 1062 errx(EX_NOHOST, "bad address: %s", s); 1063} 1064 1065int 1066prefixlen(s) 1067 char *s; 1068{ 1069 int len = atoi(s), q, r; 1070 int max; 1071 char *p; 1072 1073 rtm_addrs |= RTA_NETMASK; 1074 switch (af) { 1075#ifdef INET6 1076 case AF_INET6: 1077 max = 128; 1078 p = (char *)&so_mask.sin6.sin6_addr; 1079 break; 1080#endif 1081 case AF_INET: 1082 max = 32; 1083 p = (char *)&so_mask.sin.sin_addr; 1084 break; 1085 default: 1086 (void) fprintf(stderr, "prefixlen not supported in this af\n"); 1087 exit(1); 1088 /*NOTREACHED*/ 1089 } 1090 1091 if (len < 0 || max < len) { 1092 (void) fprintf(stderr, "%s: bad value\n", s); 1093 exit(1); 1094 } 1095 1096 q = len >> 3; 1097 r = len & 7; 1098 so_mask.sa.sa_family = af; 1099 so_mask.sa.sa_len = aflen; 1100 memset((void *)p, 0, max / 8); 1101 if (q > 0) 1102 memset((void *)p, 0xff, q); 1103 if (r > 0) 1104 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1105 if (len == max) 1106 return -1; 1107 else 1108 return len; 1109} 1110 1111void 1112interfaces() 1113{ 1114 size_t needed; 1115 int mib[6]; 1116 char *buf, *lim, *next; 1117 register struct rt_msghdr *rtm; 1118 1119 mib[0] = CTL_NET; 1120 mib[1] = PF_ROUTE; 1121 mib[2] = 0; /* protocol */ 1122 mib[3] = 0; /* wildcard address family */ 1123 mib[4] = NET_RT_IFLIST; 1124 mib[5] = 0; /* no flags */ 1125 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1126 err(EX_OSERR, "route-sysctl-estimate"); 1127 if ((buf = malloc(needed)) == NULL) 1128 errx(EX_OSERR, "malloc failed"); 1129 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1130 err(EX_OSERR, "actual retrieval of interface table"); 1131 lim = buf + needed; 1132 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1133 rtm = (struct rt_msghdr *)next; 1134 print_rtmsg(rtm, rtm->rtm_msglen); 1135 } 1136} 1137 1138void 1139monitor() 1140{ 1141 int n; 1142 char msg[2048]; 1143 1144 verbose = 1; 1145 if (debugonly) { 1146 interfaces(); 1147 exit(0); 1148 } 1149 for(;;) { 1150 time_t now; 1151 n = read(s, msg, 2048); 1152 now = time(NULL); 1153 (void) printf("\ngot message of size %d on %s", n, ctime(&now)); 1154 print_rtmsg((struct rt_msghdr *)msg, n); 1155 } 1156} 1157 1158struct { 1159 struct rt_msghdr m_rtm; 1160 char m_space[512]; 1161} m_rtmsg; 1162 1163int 1164rtmsg(cmd, flags) 1165 int cmd, flags; 1166{ 1167 static int seq; 1168 int rlen; 1169 register char *cp = m_rtmsg.m_space; 1170 register int l; 1171 1172#define NEXTADDR(w, u) \ 1173 if (rtm_addrs & (w)) {\ 1174 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 1175 if (verbose) sodump(&(u),"u");\ 1176 } 1177 1178 errno = 0; 1179 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 1180 if (cmd == 'a') 1181 cmd = RTM_ADD; 1182 else if (cmd == 'c') 1183 cmd = RTM_CHANGE; 1184 else if (cmd == 'g') { 1185 cmd = RTM_GET; 1186 if (so_ifp.sa.sa_family == 0) { 1187 so_ifp.sa.sa_family = AF_LINK; 1188 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1189 rtm_addrs |= RTA_IFP; 1190 } 1191 } else 1192 cmd = RTM_DELETE; 1193#define rtm m_rtmsg.m_rtm 1194 rtm.rtm_type = cmd; 1195 rtm.rtm_flags = flags; 1196 rtm.rtm_version = RTM_VERSION; 1197 rtm.rtm_seq = ++seq; 1198 rtm.rtm_addrs = rtm_addrs; 1199 rtm.rtm_rmx = rt_metrics; 1200 rtm.rtm_inits = rtm_inits; 1201 rtm.rtm_index = ifscope; 1202 1203 if (rtm_addrs & RTA_NETMASK) 1204 mask_addr(); 1205 NEXTADDR(RTA_DST, so_dst); 1206 NEXTADDR(RTA_GATEWAY, so_gate); 1207 NEXTADDR(RTA_NETMASK, so_mask); 1208 NEXTADDR(RTA_GENMASK, so_genmask); 1209 NEXTADDR(RTA_IFP, so_ifp); 1210 NEXTADDR(RTA_IFA, so_ifa); 1211 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1212 if (verbose) 1213 print_rtmsg(&rtm, l); 1214 if (debugonly) 1215 return (0); 1216 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1217 warnx("writing to routing socket: %s", route_strerror(errno)); 1218 return (-1); 1219 } 1220 if (cmd == RTM_GET) { 1221 do { 1222 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1223 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1224 if (l < 0) 1225 warn("read from routing socket"); 1226 else 1227 print_getmsg(&rtm, l); 1228 } 1229#undef rtm 1230 return (0); 1231} 1232 1233void 1234mask_addr() 1235{ 1236 int olen = so_mask.sa.sa_len; 1237 register char *cp1 = olen + (char *)&so_mask, *cp2; 1238 1239 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1240 if (*--cp1 != 0) { 1241 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1242 break; 1243 } 1244 if ((rtm_addrs & RTA_DST) == 0) 1245 return; 1246 switch (so_dst.sa.sa_family) { 1247 case AF_INET: 1248#ifdef INET6 1249 case AF_INET6: 1250#endif 1251 case AF_APPLETALK: 1252 case 0: 1253 return; 1254 } 1255 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1256 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1257 while (cp2 > cp1) 1258 *--cp2 = 0; 1259 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1260 while (cp1 > so_dst.sa.sa_data) 1261 *--cp1 &= *--cp2; 1262} 1263 1264char *msgtypes[] = { 1265 "", 1266 "RTM_ADD: Add Route", 1267 "RTM_DELETE: Delete Route", 1268 "RTM_CHANGE: Change Metrics or flags", 1269 "RTM_GET: Report Metrics", 1270 "RTM_LOSING: Kernel Suspects Partitioning", 1271 "RTM_REDIRECT: Told to use different route", 1272 "RTM_MISS: Lookup failed on this address", 1273 "RTM_LOCK: fix specified metrics", 1274 "RTM_OLDADD: caused by SIOCADDRT", 1275 "RTM_OLDDEL: caused by SIOCDELRT", 1276 "RTM_RESOLVE: Route created by cloning", 1277 "RTM_NEWADDR: address being added to iface", 1278 "RTM_DELADDR: address being removed from iface", 1279 "RTM_IFINFO: iface status change", 1280 "RTM_NEWMADDR: new multicast group membership on iface", 1281 "RTM_DELMADDR: multicast group membership removed from iface", 1282 0, 1283}; 1284 1285char metricnames[] = 1286"\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1287"\1mtu"; 1288char routeflags[] = 1289"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010DELCLONE" 1290"\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1291"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024b024" 1292"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST\031IFSCOPE\032CONDEMNED" 1293"\033IFREF\034PROXY\035ROUTER"; 1294char ifnetflags[] = 1295"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1296"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1297"\017LINK2\020MULTICAST"; 1298char addrnames[] = 1299"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1300 1301void 1302print_rtmsg(rtm, msglen) 1303 register struct rt_msghdr *rtm; 1304 int msglen; 1305{ 1306 struct if_msghdr *ifm; 1307 struct ifa_msghdr *ifam; 1308#ifdef RTM_NEWMADDR 1309 struct ifma_msghdr *ifmam; 1310#endif 1311 1312 if (verbose == 0) 1313 return; 1314 if (rtm->rtm_version != RTM_VERSION) { 1315 (void) printf("routing message version %d not understood\n", 1316 rtm->rtm_version); 1317 return; 1318 } 1319 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1320 switch (rtm->rtm_type) { 1321 case RTM_IFINFO: 1322 ifm = (struct if_msghdr *)rtm; 1323 (void) printf("if# %d, flags:", ifm->ifm_index); 1324 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1325 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1326 break; 1327 case RTM_NEWADDR: 1328 case RTM_DELADDR: 1329 ifam = (struct ifa_msghdr *)rtm; 1330 (void) printf("metric %d, flags:", ifam->ifam_metric); 1331 bprintf(stdout, ifam->ifam_flags, routeflags); 1332 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1333 break; 1334#ifdef RTM_NEWMADDR 1335 case RTM_NEWMADDR: 1336 case RTM_DELMADDR: 1337 ifmam = (struct ifma_msghdr *)rtm; 1338 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1339 break; 1340#endif 1341 default: 1342 (void) printf("pid: %ld, seq %d, errno %d, ", 1343 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1344 if (rtm->rtm_flags & RTF_IFSCOPE) 1345 (void) printf("ifscope %d, ", rtm->rtm_index); 1346 if (rtm->rtm_flags & RTF_IFREF) 1347 (void) printf("ifref, "); 1348 (void) printf("flags:"); 1349 bprintf(stdout, rtm->rtm_flags, routeflags); 1350 pmsg_common(rtm); 1351 } 1352} 1353 1354void 1355print_getmsg(rtm, msglen) 1356 register struct rt_msghdr *rtm; 1357 int msglen; 1358{ 1359 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1360 struct sockaddr_dl *ifp = NULL; 1361 register struct sockaddr *sa; 1362 register char *cp; 1363 register int i; 1364 1365 (void) printf(" route to: %s\n", routename(&so_dst.sa)); 1366 if (rtm->rtm_version != RTM_VERSION) { 1367 warnx("routing message version %d not understood", 1368 rtm->rtm_version); 1369 return; 1370 } 1371 if (rtm->rtm_msglen > msglen) { 1372 warnx("message length mismatch, in packet %d, returned %d", 1373 rtm->rtm_msglen, msglen); 1374 } 1375 if (rtm->rtm_errno) { 1376 errno = rtm->rtm_errno; 1377 warn("message indicates error %d", errno); 1378 return; 1379 } 1380 cp = ((char *)(rtm + 1)); 1381 if (rtm->rtm_addrs) 1382 for (i = 1; i; i <<= 1) 1383 if (i & rtm->rtm_addrs) { 1384 sa = (struct sockaddr *)cp; 1385 switch (i) { 1386 case RTA_DST: 1387 dst = sa; 1388 break; 1389 case RTA_GATEWAY: 1390 gate = sa; 1391 break; 1392 case RTA_NETMASK: 1393 mask = sa; 1394 break; 1395 case RTA_IFP: 1396 if (sa->sa_family == AF_LINK && 1397 ((struct sockaddr_dl *)sa)->sdl_nlen) 1398 ifp = (struct sockaddr_dl *)sa; 1399 break; 1400 } 1401 ADVANCE(cp, sa); 1402 } 1403 if (dst && mask) 1404 mask->sa_family = dst->sa_family; /* XXX */ 1405 if (dst) 1406 (void)printf("destination: %s\n", routename(dst)); 1407 if (mask) { 1408 int savenflag = nflag; 1409 1410 nflag = 1; 1411 (void)printf(" mask: %s\n", routename(mask)); 1412 nflag = savenflag; 1413 } 1414 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1415 (void)printf(" gateway: %s\n", routename(gate)); 1416 if (ifp) 1417 (void)printf(" interface: %.*s\n", 1418 ifp->sdl_nlen, ifp->sdl_data); 1419 (void)printf(" flags: "); 1420 bprintf(stdout, rtm->rtm_flags, routeflags); 1421 1422#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1423#define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1424 1425 (void) printf("\n%s\n", "\ 1426 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1427 printf("%8u%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1428 printf("%8u%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1429 printf("%8u%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1430 printf("%8u%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1431 printf("%8u%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1432 printf("%8u%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1433 printf("%8u%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1434 if (rtm->rtm_rmx.rmx_expire) 1435 rtm->rtm_rmx.rmx_expire -= time(0); 1436 printf("%8d%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1437#undef lock 1438#undef msec 1439#define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1440 if (verbose) 1441 pmsg_common(rtm); 1442 else if (rtm->rtm_addrs &~ RTA_IGN) { 1443 (void) printf("sockaddrs: "); 1444 bprintf(stdout, rtm->rtm_addrs, addrnames); 1445 putchar('\n'); 1446 } 1447#undef RTA_IGN 1448} 1449 1450void 1451pmsg_common(rtm) 1452 register struct rt_msghdr *rtm; 1453{ 1454 (void) printf("\nlocks: "); 1455 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1456 (void) printf(" inits: "); 1457 bprintf(stdout, rtm->rtm_inits, metricnames); 1458 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1459} 1460 1461void 1462pmsg_addrs(cp, addrs) 1463 char *cp; 1464 int addrs; 1465{ 1466 register struct sockaddr *sa; 1467 int i; 1468 1469 if (addrs == 0) { 1470 (void) putchar('\n'); 1471 return; 1472 } 1473 (void) printf("\nsockaddrs: "); 1474 bprintf(stdout, addrs, addrnames); 1475 (void) putchar('\n'); 1476 for (i = 1; i; i <<= 1) 1477 if (i & addrs) { 1478 sa = (struct sockaddr *)cp; 1479 (void) printf(" %s", routename(sa)); 1480 ADVANCE(cp, sa); 1481 } 1482 (void) putchar('\n'); 1483 (void) fflush(stdout); 1484} 1485 1486void 1487bprintf(fp, b, s) 1488 register FILE *fp; 1489 register int b; 1490 register u_char *s; 1491{ 1492 register int i; 1493 int gotsome = 0; 1494 1495 if (b == 0) 1496 return; 1497 while ((i = *s++) != 0) { 1498 if (b & (1 << (i-1))) { 1499 if (gotsome == 0) 1500 i = '<'; 1501 else 1502 i = ','; 1503 (void) putc(i, fp); 1504 gotsome = 1; 1505 for (; (i = *s) > 32; s++) 1506 (void) putc(i, fp); 1507 } else 1508 while (*s > 32) 1509 s++; 1510 } 1511 if (gotsome) 1512 (void) putc('>', fp); 1513} 1514 1515int 1516keyword(cp) 1517 char *cp; 1518{ 1519 register struct keytab *kt = keywords; 1520 1521 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1522 kt++; 1523 return kt->kt_i; 1524} 1525 1526void 1527sodump(su, which) 1528 register sup su; 1529 char *which; 1530{ 1531 switch (su->sa.sa_family) { 1532 case AF_LINK: 1533 (void) printf("%s: link %s; ", 1534 which, link_ntoa(&su->sdl)); 1535 break; 1536 case AF_INET: 1537 (void) printf("%s: inet %s; ", 1538 which, inet_ntoa(su->sin.sin_addr)); 1539 break; 1540 } 1541 (void) fflush(stdout); 1542} 1543 1544/* States*/ 1545#define VIRGIN 0 1546#define GOTONE 1 1547#define GOTTWO 2 1548/* Inputs */ 1549#define DIGIT (4*0) 1550#define END (4*1) 1551#define DELIM (4*2) 1552 1553void 1554sockaddr(addr, sa) 1555 register char *addr; 1556 register struct sockaddr *sa; 1557{ 1558 register char *cp = (char *)sa; 1559 int size = sa->sa_len; 1560 char *cplim = cp + size; 1561 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1562 1563 bzero(cp, size); 1564 cp++; 1565 do { 1566 if ((*addr >= '0') && (*addr <= '9')) { 1567 new = *addr - '0'; 1568 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1569 new = *addr - 'a' + 10; 1570 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1571 new = *addr - 'A' + 10; 1572 } else if (*addr == 0) 1573 state |= END; 1574 else 1575 state |= DELIM; 1576 addr++; 1577 switch (state /* | INPUT */) { 1578 case GOTTWO | DIGIT: 1579 *cp++ = byte; /*FALLTHROUGH*/ 1580 case VIRGIN | DIGIT: 1581 state = GOTONE; byte = new; continue; 1582 case GOTONE | DIGIT: 1583 state = GOTTWO; byte = new + (byte << 4); continue; 1584 default: /* | DELIM */ 1585 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1586 case GOTONE | END: 1587 case GOTTWO | END: 1588 *cp++ = byte; /* FALLTHROUGH */ 1589 case VIRGIN | END: 1590 break; 1591 } 1592 break; 1593 } while (cp < cplim); 1594 sa->sa_len = cp - (char *)sa; 1595} 1596