1 /* 2 * Copyright (c) 1983, 1989, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1983, 1989, 1991, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)route.c 8.6 (Berkeley) 4/28/95 35 * $FreeBSD: src/sbin/route/route.c,v 1.40.2.11 2003/02/27 23:10:10 ru Exp $ 36 * $DragonFly: src/sbin/route/route.c,v 1.17 2008/07/07 22:02:09 nant Exp $ 37 */ 38 39 #include <sys/param.h> 40 #include <sys/file.h> 41 #include <sys/socket.h> 42 #include <sys/ioctl.h> 43 #include <sys/sysctl.h> 44 #include <sys/types.h> 45 46 #include <net/if.h> 47 #include <net/route.h> 48 #include <net/if_dl.h> 49 #include <netinet/in.h> 50 #include <netinet/if_ether.h> 51 #include <netatalk/at.h> 52 #include <arpa/inet.h> 53 #include <netdb.h> 54 55 #include <netproto/mpls/mpls.h> 56 57 #include <ctype.h> 58 #include <err.h> 59 #include <errno.h> 60 #include <paths.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <sysexits.h> 65 #include <unistd.h> 66 #include <ifaddrs.h> 67 68 #include "extern.h" 69 #include "keywords.h" 70 71 union sockunion { 72 struct sockaddr sa; 73 struct sockaddr_in sin; 74 #ifdef INET6 75 struct sockaddr_in6 sin6; 76 #endif 77 struct sockaddr_at sat; 78 struct sockaddr_mpls smpls; 79 struct sockaddr_dl sdl; 80 struct sockaddr_inarp sinarp; 81 struct sockaddr_storage ss; /* added to avoid memory overrun */ 82 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp, so_mpls1, 83 so_mpls2, so_mpls3; 84 85 typedef union sockunion *sup; 86 87 int nflag, wflag; 88 int cpuflag = -1; 89 90 static struct ortentry route; 91 static struct rt_metrics rt_metrics; 92 static int pid, rtm_addrs; 93 static int s; 94 static int forcehost, forcenet, af, qflag, tflag; 95 static int iflag, verbose, aflen = sizeof(struct sockaddr_in); 96 static int locking, lockrest, debugonly; 97 static int mplsop, popcount, pushcount, swapcount; 98 static u_long rtm_inits; 99 static uid_t uid; 100 101 static int atalk_aton(const char *, struct at_addr *); 102 static char *atalk_ntoa(struct at_addr); 103 static void flushroutes(int, char **); 104 static void set_metric(char *, int); 105 static void newroute(int, char **); 106 static void inet_makenetandmask(u_long, struct sockaddr_in *, u_long); 107 static void interfaces(void); 108 static void monitor(void); 109 static void sockaddr(const char *, struct sockaddr *); 110 static void sodump(sup, const char *); 111 static void bprintf(FILE *, int, u_char *); 112 static void print_getmsg(struct rt_msghdr *, int); 113 static void print_rtmsg(struct rt_msghdr *, int); 114 static void pmsg_common(struct rt_msghdr *); 115 static void pmsg_addrs(char *, int); 116 static void mask_addr(void); 117 static int getaddr(int, const char *, struct hostent **); 118 static int rtmsg(int, int); 119 static int prefixlen(const char *); 120 #ifdef INET6 121 static int inet6_makenetandmask(struct sockaddr_in6 *, const char *); 122 #endif 123 124 void 125 usage(const char *cp) 126 { 127 if (cp != NULL) 128 warnx("bad keyword: %s", cp); 129 fprintf(stderr, "usage: route [-dnqtv] command [[modifiers] args]\n"); 130 exit(EX_USAGE); 131 /* NOTREACHED */ 132 } 133 134 #define ROUNDUP(a) \ 135 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 136 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 137 138 int 139 main(int argc, char **argv) 140 { 141 int ch; 142 143 if (argc < 2) 144 usage(NULL); 145 146 while ((ch = getopt(argc, argv, "c:wnqdtv")) != -1) 147 switch(ch) { 148 case 'c': 149 cpuflag = strtol(optarg, NULL, 0); 150 break; 151 case 'w': 152 wflag = 1; 153 break; 154 case 'n': 155 nflag = 1; 156 break; 157 case 'q': 158 qflag = 1; 159 break; 160 case 'v': 161 verbose = 1; 162 break; 163 case 't': 164 tflag = 1; 165 break; 166 case 'd': 167 debugonly = 1; 168 break; 169 case '?': 170 default: 171 usage(NULL); 172 } 173 argc -= optind; 174 argv += optind; 175 176 pid = getpid(); 177 uid = geteuid(); 178 if (tflag) 179 s = open(_PATH_DEVNULL, O_WRONLY, 0); 180 else 181 s = socket(PF_ROUTE, SOCK_RAW, 0); 182 if (s < 0) 183 err(EX_OSERR, "socket"); 184 if (*argv != NULL) 185 switch (keyword(*argv)) { 186 case K_GET: 187 uid = 0; 188 /* FALLTHROUGH */ 189 190 case K_CHANGE: 191 case K_ADD: 192 case K_DELETE: 193 newroute(argc, argv); 194 /* NOTREACHED */ 195 196 case K_SHOW: 197 show(argc, argv); 198 return(0); 199 200 case K_MONITOR: 201 monitor(); 202 /* NOTREACHED */ 203 204 case K_FLUSH: 205 flushroutes(argc, argv); 206 exit(0); 207 /* NOTREACHED */ 208 } 209 usage(*argv); 210 /* NOTREACHED */ 211 } 212 213 /* 214 * Purge all entries in the routing tables not 215 * associated with network interfaces. 216 */ 217 static void 218 flushroutes(int argc, char **argv) 219 { 220 size_t needed; 221 int mib[7], rlen, seqno; 222 int miblen; 223 char *buf, *next, *lim; 224 struct rt_msghdr *rtm; 225 226 if (uid != 0) { 227 errx(EX_NOPERM, "must be root to alter routing table"); 228 } 229 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 230 if (argc > 1) { 231 argv++; 232 if (argc == 2 && **argv == '-') 233 switch (keyword(*argv + 1)) { 234 case K_INET: 235 af = AF_INET; 236 break; 237 #ifdef INET6 238 case K_INET6: 239 af = AF_INET6; 240 break; 241 #endif 242 case K_ATALK: 243 af = AF_APPLETALK; 244 break; 245 case K_LINK: 246 af = AF_LINK; 247 break; 248 case K_MPLS: 249 af = AF_MPLS; 250 break; 251 default: 252 goto bad; 253 } else 254 bad: usage(*argv); 255 } 256 mib[0] = CTL_NET; 257 mib[1] = PF_ROUTE; 258 mib[2] = 0; /* protocol */ 259 mib[3] = 0; /* wildcard address family */ 260 mib[4] = NET_RT_DUMP; 261 mib[5] = 0; /* no flags */ 262 if (cpuflag >= 0) { 263 mib[6] = cpuflag; 264 miblen = 7; 265 } else { 266 miblen = 6; 267 } 268 if (sysctl(mib, miblen, NULL, &needed, NULL, 0) < 0) 269 err(EX_OSERR, "route-sysctl-estimate"); 270 if ((buf = malloc(needed)) == NULL) 271 errx(EX_OSERR, "malloc failed"); 272 if (sysctl(mib, miblen, buf, &needed, NULL, 0) < 0) 273 err(EX_OSERR, "route-sysctl-get"); 274 lim = buf + needed; 275 if (verbose) 276 printf("Examining routing table from sysctl\n"); 277 seqno = 0; /* ??? */ 278 for (next = buf; next < lim; next += rtm->rtm_msglen) { 279 rtm = (struct rt_msghdr *)next; 280 if (verbose) 281 print_rtmsg(rtm, rtm->rtm_msglen); 282 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 283 continue; 284 if (af != 0) { 285 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 286 287 if (sa->sa_family != af) 288 continue; 289 } 290 if (debugonly) 291 continue; 292 rtm->rtm_type = RTM_DELETE; 293 rtm->rtm_seq = seqno; 294 rlen = write(s, next, rtm->rtm_msglen); 295 if (rlen < (int)rtm->rtm_msglen) { 296 warn("write to routing socket"); 297 printf("got only %d for rlen\n", rlen); 298 break; 299 } 300 seqno++; 301 if (qflag) 302 continue; 303 if (verbose) { 304 print_rtmsg(rtm, rlen); 305 } else { 306 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 307 if (wflag) { 308 printf("%-20s ", rtm->rtm_flags & RTF_HOST ? 309 routename(sa) : netname(sa)); 310 } else { 311 printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 312 routename(sa) : netname(sa)); 313 } 314 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + 315 (char *)sa); 316 if (wflag) { 317 printf("%-20s ", routename(sa)); 318 } else { 319 printf("%-20.20s ", routename(sa)); 320 } 321 printf("done\n"); 322 } 323 } 324 } 325 326 char * 327 routename(struct sockaddr *sa) 328 { 329 const char *cp; 330 static char line[MAXHOSTNAMELEN + 1]; 331 struct hostent *hp; 332 static char domain[MAXHOSTNAMELEN + 1]; 333 static int first = 1; 334 335 if (first) { 336 first = 0; 337 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 338 (cp = strchr(domain, '.'))) { 339 domain[MAXHOSTNAMELEN] = '\0'; 340 strcpy(domain, cp + 1); 341 } else 342 domain[0] = 0; 343 } 344 345 if (sa->sa_len == 0) 346 strcpy(line, "default"); 347 else switch (sa->sa_family) { 348 349 case AF_INET: 350 { struct in_addr in; 351 in = ((struct sockaddr_in *)sa)->sin_addr; 352 353 cp = NULL; 354 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 355 cp = "default"; 356 if (cp == NULL && !nflag) { 357 hp = gethostbyaddr(&in, sizeof(struct in_addr), 358 AF_INET); 359 if (hp != NULL) { 360 char *cptr; 361 cptr = strchr(hp->h_name, '.'); 362 if (cptr != NULL && !wflag && 363 strcmp(cptr + 1, domain) == 0) 364 *cptr = '\0'; 365 cp = hp->h_name; 366 } 367 } 368 if (cp != NULL) { 369 strncpy(line, cp, sizeof(line) - 1); 370 line[sizeof(line) - 1] = '\0'; 371 } else 372 sprintf(line, "%s", inet_ntoa(in)); 373 break; 374 } 375 376 #ifdef INET6 377 case AF_INET6: 378 { 379 struct sockaddr_in6 sin6; /* use static var for safety */ 380 int niflags = 0; 381 #ifdef NI_WITHSCOPEID 382 niflags = NI_WITHSCOPEID; 383 #endif 384 385 memset(&sin6, 0, sizeof(sin6)); 386 memcpy(&sin6, sa, sa->sa_len); 387 sin6.sin6_len = sizeof(struct sockaddr_in6); 388 sin6.sin6_family = AF_INET6; 389 #ifdef __KAME__ 390 if (sa->sa_len == sizeof(struct sockaddr_in6) && 391 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 392 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 393 sin6.sin6_scope_id == 0) { 394 sin6.sin6_scope_id = 395 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 396 sin6.sin6_addr.s6_addr[2] = 0; 397 sin6.sin6_addr.s6_addr[3] = 0; 398 } 399 #endif 400 if (nflag) 401 niflags |= NI_NUMERICHOST; 402 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 403 line, sizeof(line), NULL, 0, niflags) != 0) 404 strncpy(line, "invalid", sizeof(line)); 405 406 return(line); 407 } 408 #endif 409 410 case AF_APPLETALK: 411 snprintf(line, sizeof(line), "atalk %s", 412 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 413 break; 414 415 case AF_LINK: 416 return(link_ntoa((struct sockaddr_dl *)sa)); 417 418 default: 419 { 420 /* 421 * Unknown address family; just render the raw 422 * data in sa->sa_data as hex values. 423 */ 424 uint8_t *sp = (uint8_t *)sa->sa_data; 425 uint8_t *splim = (uint8_t *)sa + sa->sa_len; 426 char *cps = line + sprintf(line, "(%d)", sa->sa_family); 427 char *cpe = line + sizeof(line); 428 429 while (sp < splim && cps < cpe) 430 cps += snprintf(cps, cpe - cps, " %02x", *sp++); 431 break; 432 } 433 } 434 return(line); 435 } 436 437 /* 438 * Return the name of the network whose address is given. 439 * The address is assumed to be that of a net or subnet, not a host. 440 */ 441 char * 442 netname(struct sockaddr *sa) 443 { 444 const char *cp = 0; 445 static char line[MAXHOSTNAMELEN + 1]; 446 struct netent *np = 0; 447 u_long net, mask; 448 u_long i; 449 int subnetshift; 450 451 switch (sa->sa_family) { 452 453 case AF_INET: 454 { struct in_addr in; 455 in = ((struct sockaddr_in *)sa)->sin_addr; 456 457 i = in.s_addr = ntohl(in.s_addr); 458 if (in.s_addr == 0) 459 cp = "default"; 460 else if (!nflag) { 461 if (IN_CLASSA(i)) { 462 mask = IN_CLASSA_NET; 463 subnetshift = 8; 464 } else if (IN_CLASSB(i)) { 465 mask = IN_CLASSB_NET; 466 subnetshift = 8; 467 } else { 468 mask = IN_CLASSC_NET; 469 subnetshift = 4; 470 } 471 /* 472 * If there are more bits than the standard mask 473 * would suggest, subnets must be in use. 474 * Guess at the subnet mask, assuming reasonable 475 * width subnet fields. 476 */ 477 while (in.s_addr &~ mask) 478 mask = (long)mask >> subnetshift; 479 net = in.s_addr & mask; 480 while ((mask & 1) == 0) 481 mask >>= 1, net >>= 1; 482 np = getnetbyaddr(net, AF_INET); 483 if (np != NULL) 484 cp = np->n_name; 485 } 486 #define C(x) (unsigned)((x) & 0xff) 487 if (cp != NULL) 488 strncpy(line, cp, sizeof(line)); 489 else if ((in.s_addr & 0xffffff) == 0) 490 sprintf(line, "%u", C(in.s_addr >> 24)); 491 else if ((in.s_addr & 0xffff) == 0) 492 sprintf(line, "%u.%u", C(in.s_addr >> 24), 493 C(in.s_addr >> 16)); 494 else if ((in.s_addr & 0xff) == 0) 495 sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 496 C(in.s_addr >> 16), C(in.s_addr >> 8)); 497 else 498 sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 499 C(in.s_addr >> 16), C(in.s_addr >> 8), 500 C(in.s_addr)); 501 #undef C 502 break; 503 } 504 505 #ifdef INET6 506 case AF_INET6: 507 { 508 struct sockaddr_in6 sin6; /* use static var for safety */ 509 int niflags = 0; 510 #ifdef NI_WITHSCOPEID 511 niflags = NI_WITHSCOPEID; 512 #endif 513 514 memset(&sin6, 0, sizeof(sin6)); 515 memcpy(&sin6, sa, sa->sa_len); 516 sin6.sin6_len = sizeof(struct sockaddr_in6); 517 sin6.sin6_family = AF_INET6; 518 #ifdef __KAME__ 519 if (sa->sa_len == sizeof(struct sockaddr_in6) && 520 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 521 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 522 sin6.sin6_scope_id == 0) { 523 sin6.sin6_scope_id = 524 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 525 sin6.sin6_addr.s6_addr[2] = 0; 526 sin6.sin6_addr.s6_addr[3] = 0; 527 } 528 #endif 529 if (nflag) 530 niflags |= NI_NUMERICHOST; 531 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 532 line, sizeof(line), NULL, 0, niflags) != 0) 533 strncpy(line, "invalid", sizeof(line)); 534 535 return(line); 536 } 537 #endif 538 539 case AF_APPLETALK: 540 snprintf(line, sizeof(line), "atalk %s", 541 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 542 break; 543 544 case AF_LINK: 545 return(link_ntoa((struct sockaddr_dl *)sa)); 546 547 548 default: 549 { 550 /* 551 * Unknown address family; just render the raw 552 * data in sa->sa_data as hex values. 553 */ 554 uint8_t *sp = (uint8_t *)sa->sa_data; 555 uint8_t *splim = (uint8_t *)sa + sa->sa_len; 556 char *cps = line + sprintf(line, "af %d:", sa->sa_family); 557 char *cpe = line + sizeof(line); 558 559 while (sp < splim && cps < cpe) 560 cps += snprintf(cps, cpe - cps, " %02x", *sp++); 561 break; 562 } 563 } 564 return(line); 565 } 566 567 static void 568 set_metric(char *value, int key) 569 { 570 int flag = 0; 571 u_long noval, *valp = &noval; 572 573 switch (key) { 574 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 575 caseof(K_MTU, RTV_MTU, rmx_mtu); 576 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 577 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 578 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 579 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 580 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 581 caseof(K_RTT, RTV_RTT, rmx_rtt); 582 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 583 } 584 rtm_inits |= flag; 585 if (lockrest || locking) 586 rt_metrics.rmx_locks |= flag; 587 if (locking) 588 locking = 0; 589 *valp = atoi(value); 590 } 591 592 static void 593 newroute(int argc, char **argv) 594 { 595 char *cmd; 596 const char *err_str, *dest = "", *gateway = ""; 597 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC; 598 int key; 599 struct hostent *hp = 0; 600 601 if (uid != 0) { 602 errx(EX_NOPERM, "must be root to alter routing table"); 603 } 604 cmd = argv[0]; 605 if (*cmd != 'g') 606 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 607 while (--argc > 0) { 608 if (**(++argv)== '-') { 609 switch (key = keyword(1 + *argv)) { 610 case K_LINK: 611 af = AF_LINK; 612 aflen = sizeof(struct sockaddr_dl); 613 break; 614 case K_INET: 615 af = AF_INET; 616 aflen = sizeof(struct sockaddr_in); 617 break; 618 #ifdef INET6 619 case K_INET6: 620 af = AF_INET6; 621 aflen = sizeof(struct sockaddr_in6); 622 break; 623 #endif 624 case K_ATALK: 625 af = AF_APPLETALK; 626 aflen = sizeof(struct sockaddr_at); 627 break; 628 case K_SA: 629 af = PF_ROUTE; 630 aflen = sizeof(union sockunion); 631 break; 632 case K_IFACE: 633 case K_INTERFACE: 634 iflag++; 635 break; 636 case K_NOSTATIC: 637 flags &= ~RTF_STATIC; 638 break; 639 case K_LLINFO: 640 flags |= RTF_LLINFO; 641 break; 642 case K_LOCK: 643 locking = 1; 644 break; 645 case K_LOCKREST: 646 lockrest = 1; 647 break; 648 case K_HOST: 649 forcehost++; 650 break; 651 case K_REJECT: 652 flags |= RTF_REJECT; 653 break; 654 case K_BLACKHOLE: 655 flags |= RTF_BLACKHOLE; 656 break; 657 case K_PROTO1: 658 flags |= RTF_PROTO1; 659 break; 660 case K_PROTO2: 661 flags |= RTF_PROTO2; 662 break; 663 case K_PROXY: 664 proxy = 1; 665 break; 666 case K_CLONING: 667 flags |= RTF_CLONING; 668 break; 669 case K_XRESOLVE: 670 flags |= RTF_XRESOLVE; 671 break; 672 case K_STATIC: 673 flags |= RTF_STATIC; 674 break; 675 case K_IFA: 676 if (--argc == 0) 677 usage(NULL); 678 getaddr(RTA_IFA, *++argv, 0); 679 break; 680 case K_IFP: 681 if (--argc == 0) 682 usage(NULL); 683 getaddr(RTA_IFP, *++argv, 0); 684 break; 685 case K_GENMASK: 686 if (--argc == 0) 687 usage(NULL); 688 getaddr(RTA_GENMASK, *++argv, 0); 689 break; 690 case K_GATEWAY: 691 if (--argc == 0) 692 usage(NULL); 693 getaddr(RTA_GATEWAY, *++argv, 0); 694 break; 695 case K_DST: 696 if (--argc == 0) 697 usage(NULL); 698 ishost = getaddr(RTA_DST, *++argv, &hp); 699 dest = *argv; 700 break; 701 case K_NETMASK: 702 if (--argc == 0) 703 usage(NULL); 704 getaddr(RTA_NETMASK, *++argv, 0); 705 /* FALLTHROUGH */ 706 case K_NET: 707 forcenet++; 708 break; 709 case K_PREFIXLEN: 710 if (--argc == 0) 711 usage(NULL); 712 if (prefixlen(*++argv) == -1) { 713 forcenet = 0; 714 ishost = 1; 715 } else { 716 forcenet = 1; 717 ishost = 0; 718 } 719 break; 720 case K_MPLS: 721 af = AF_MPLS; 722 aflen = sizeof(struct sockaddr_mpls); 723 break; 724 case K_POP: 725 flags |= RTF_MPLSOPS; 726 af = AF_MPLS; 727 mplsop = MPLSLOP_POP; 728 switch(++popcount){ 729 case 1: 730 getaddr(RTA_MPLS1, "", 0); 731 break; 732 case 2: 733 getaddr(RTA_MPLS2, "", 0); 734 break; 735 case 3: 736 getaddr(RTA_MPLS3, "", 0); 737 break; 738 } 739 break; 740 case K_PUSH: 741 case K_SWAP: 742 if (popcount > 0) { 743 warnx("Push or swap after pop. Ignoring."); 744 break; 745 } 746 if (key == K_PUSH) { 747 mplsop = MPLSLOP_PUSH; 748 ++pushcount; 749 } else { 750 if (pushcount > 0) { 751 warnx("Swap after push. Ignoring."); 752 break; 753 } 754 if (swapcount > 0) { 755 warnx("Too many swaps. Ignoring."); 756 break; 757 } 758 mplsop = MPLSLOP_SWAP; 759 ++swapcount; 760 } 761 flags |= RTF_MPLSOPS; 762 af = AF_MPLS; 763 aflen = sizeof(struct sockaddr_mpls); 764 if (--argc == 0) 765 usage(NULL); 766 switch(pushcount + swapcount){ 767 case 1: 768 getaddr(RTA_MPLS1, *++argv, 0); 769 break; 770 case 2: 771 getaddr(RTA_MPLS2, *++argv, 0); 772 break; 773 case 3: 774 getaddr(RTA_MPLS3, *++argv, 0); 775 break; 776 } 777 break; 778 case K_MTU: 779 case K_HOPCOUNT: 780 case K_EXPIRE: 781 case K_RECVPIPE: 782 case K_SENDPIPE: 783 case K_SSTHRESH: 784 case K_RTT: 785 case K_RTTVAR: 786 if (--argc == 0) 787 usage(NULL); 788 set_metric(*++argv, key); 789 break; 790 default: 791 usage(1+*argv); 792 } 793 } else { 794 if ((rtm_addrs & RTA_DST) == 0) { 795 dest = *argv; 796 ishost = getaddr(RTA_DST, *argv, &hp); 797 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 798 gateway = *argv; 799 getaddr(RTA_GATEWAY, *argv, &hp); 800 } else { 801 getaddr(RTA_NETMASK, *argv, 0); 802 forcenet = 1; 803 } 804 } 805 } 806 if (forcehost) { 807 ishost = 1; 808 #ifdef INET6 809 if (af == AF_INET6) { 810 rtm_addrs &= ~RTA_NETMASK; 811 memset((void *)&so_mask, 0, sizeof(so_mask)); 812 } 813 #endif 814 } 815 if (forcenet) 816 ishost = 0; 817 flags |= RTF_UP; 818 if (ishost) 819 flags |= RTF_HOST; 820 if (iflag == 0) 821 flags |= RTF_GATEWAY; 822 if (proxy) { 823 so_dst.sinarp.sin_other = SIN_PROXY; 824 flags |= RTF_ANNOUNCE; 825 } 826 for (attempts = 1; ; attempts++) { 827 errno = 0; 828 if ((ret = rtmsg(*cmd, flags)) == 0) 829 break; 830 if (errno != ENETUNREACH && errno != ESRCH) 831 break; 832 if (af == AF_INET && *gateway != '\0' && 833 hp != NULL && hp->h_addr_list[1] != NULL) { 834 hp->h_addr_list++; 835 memmove(&so_gate.sin.sin_addr, 836 hp->h_addr_list[0], 837 MIN((size_t)hp->h_length, 838 sizeof(so_gate.sin.sin_addr))); 839 } else 840 break; 841 } 842 if (*cmd == 'g') 843 exit(0); 844 if (!qflag) { 845 oerrno = errno; 846 printf("%s %s %s", cmd, ishost? "host" : "net", dest); 847 if (*gateway != '\0') { 848 printf(": gateway %s", gateway); 849 if (attempts > 1 && ret == 0 && af == AF_INET) 850 printf(" (%s)", 851 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 852 } 853 if (ret == 0) { 854 printf("\n"); 855 } else { 856 switch (oerrno) { 857 case ESRCH: 858 err_str = "not in table"; 859 break; 860 case EBUSY: 861 err_str = "entry in use"; 862 break; 863 case ENOBUFS: 864 err_str = "routing table overflow"; 865 break; 866 case EDQUOT: /* handle recursion avoidance in 867 rt_setgate() */ 868 err_str = "gateway uses the same route"; 869 break; 870 default: 871 err_str = strerror(oerrno); 872 break; 873 } 874 printf(": %s\n", err_str); 875 } 876 } 877 exit(ret != 0); 878 } 879 880 static void 881 inet_makenetandmask(u_long net, struct sockaddr_in *in, u_long bits) 882 { 883 u_long addr, mask = 0; 884 char *cp; 885 886 rtm_addrs |= RTA_NETMASK; 887 /* 888 * XXX: This approach unable to handle 0.0.0.1/32 correctly 889 * as inet_network() converts 0.0.0.1 and 1 equally. 890 */ 891 if (net <= 0xff) 892 addr = net << IN_CLASSA_NSHIFT; 893 else if (net <= 0xffff) 894 addr = net << IN_CLASSB_NSHIFT; 895 else if (net <= 0xffffff) 896 addr = net << IN_CLASSC_NSHIFT; 897 else 898 addr = net; 899 900 if (bits != 0) 901 mask = 0xffffffff << (32 - bits); 902 else if (net == 0) 903 mask = 0; 904 else if (IN_CLASSA(addr)) 905 mask = IN_CLASSA_NET; 906 else if (IN_CLASSB(addr)) 907 mask = IN_CLASSB_NET; 908 else if (IN_CLASSC(addr)) 909 mask = IN_CLASSC_NET; 910 else if (IN_MULTICAST(addr)) 911 mask = IN_CLASSD_NET; 912 else 913 mask = 0xffffffff; 914 915 in->sin_addr.s_addr = htonl(addr); 916 in = &so_mask.sin; 917 in->sin_addr.s_addr = htonl(mask); 918 in->sin_len = 0; 919 in->sin_family = 0; 920 cp = (char *)(&in->sin_addr + 1); 921 while (*--cp == 0 && cp > (char *)in) 922 ; 923 in->sin_len = 1 + cp - (char *)in; 924 } 925 926 #ifdef INET6 927 /* 928 * XXX the function may need more improvement... 929 */ 930 static int 931 inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen) 932 { 933 struct in6_addr in6; 934 935 if (plen == NULL) { 936 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 937 sin6->sin6_scope_id == 0) { 938 plen = "0"; 939 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 940 /* aggregatable global unicast - RFC2374 */ 941 memset(&in6, 0, sizeof(in6)); 942 if (memcmp(&sin6->sin6_addr.s6_addr[8], 943 &in6.s6_addr[8], 8) == 0) 944 plen = "64"; 945 } 946 } 947 948 if (plen == NULL || strcmp(plen, "128") == 0) 949 return(1); 950 rtm_addrs |= RTA_NETMASK; 951 prefixlen(plen); 952 return(0); 953 } 954 #endif 955 956 /* 957 * Interpret an argument as a network address of some kind, 958 * returning 1 if a host address, 0 if a network address. 959 */ 960 static int 961 getaddr(int which, const char *str, struct hostent **hpp) 962 { 963 sup su; 964 struct hostent *hp; 965 struct netent *np; 966 u_long val; 967 char *q; 968 int afamily; /* local copy of af so we can change it */ 969 970 if (af == 0) { 971 af = AF_INET; 972 aflen = sizeof(struct sockaddr_in); 973 } 974 afamily = af; 975 rtm_addrs |= which; 976 switch (which) { 977 case RTA_DST: 978 su = &so_dst; 979 break; 980 case RTA_GATEWAY: 981 su = &so_gate; 982 if (iflag) { 983 struct ifaddrs *ifap, *ifa; 984 struct sockaddr_dl *sdl = NULL; 985 986 if (getifaddrs(&ifap)) 987 err(1, "getifaddrs"); 988 989 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) { 990 if (ifa->ifa_addr->sa_family != AF_LINK) 991 continue; 992 993 if (strcmp(str, ifa->ifa_name) != 0) 994 continue; 995 996 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 997 } 998 /* If we found it, then use it */ 999 if (sdl != NULL) { 1000 /* 1001 * Copy is safe since we have a 1002 * sockaddr_storage member in sockunion{}. 1003 * Note that we need to copy before calling 1004 * freeifaddrs(). 1005 * 1006 * Interface routes are routed only by their 1007 * sdl_index or interface name (we provide 1008 * both here), not by the ARP address of the 1009 * local interface (alen, slen = 0). 1010 */ 1011 memcpy(&su->sdl, sdl, sdl->sdl_len); 1012 su->sdl.sdl_alen = 0; 1013 su->sdl.sdl_slen = 0; 1014 } 1015 freeifaddrs(ifap); 1016 if (sdl != NULL) 1017 return(1); 1018 } 1019 break; 1020 case RTA_NETMASK: 1021 su = &so_mask; 1022 break; 1023 case RTA_GENMASK: 1024 su = &so_genmask; 1025 break; 1026 case RTA_IFP: 1027 su = &so_ifp; 1028 afamily = AF_LINK; 1029 break; 1030 case RTA_IFA: 1031 su = &so_ifa; 1032 break; 1033 case RTA_MPLS1: 1034 su = &so_mpls1; 1035 break; 1036 case RTA_MPLS2: 1037 su = &so_mpls2; 1038 break; 1039 case RTA_MPLS3: 1040 su = &so_mpls3; 1041 break; 1042 default: 1043 usage("internal error"); 1044 /*NOTREACHED*/ 1045 } 1046 su->sa.sa_len = aflen; 1047 su->sa.sa_family = afamily; /* cases that don't want it have left 1048 already */ 1049 if (strcmp(str, "default") == 0) { 1050 /* 1051 * Default is net 0.0.0.0/0 1052 */ 1053 switch (which) { 1054 case RTA_DST: 1055 forcenet++; 1056 /* bzero(su, sizeof(*su)); *//* for readability */ 1057 getaddr(RTA_NETMASK, str, 0); 1058 break; 1059 case RTA_NETMASK: 1060 case RTA_GENMASK: 1061 /* bzero(su, sizeof(*su)); *//* for readability */ 1062 break; 1063 } 1064 return(0); 1065 } 1066 switch (afamily) { 1067 #ifdef INET6 1068 case AF_INET6: 1069 { 1070 struct addrinfo hints, *res; 1071 1072 q = NULL; 1073 if (which == RTA_DST && (q = strchr(str, '/')) != NULL) 1074 *q = '\0'; 1075 memset(&hints, 0, sizeof(hints)); 1076 hints.ai_family = afamily; /*AF_INET6*/ 1077 hints.ai_flags = AI_NUMERICHOST; 1078 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1079 if (getaddrinfo(str, "0", &hints, &res) != 0 || 1080 res->ai_family != AF_INET6 || 1081 res->ai_addrlen != sizeof(su->sin6)) { 1082 fprintf(stderr, "%s: bad value\n", str); 1083 exit(1); 1084 } 1085 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1086 #ifdef __KAME__ 1087 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1088 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) && 1089 su->sin6.sin6_scope_id) { 1090 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1091 htons(su->sin6.sin6_scope_id); 1092 su->sin6.sin6_scope_id = 0; 1093 } 1094 #endif 1095 freeaddrinfo(res); 1096 if (q != NULL) 1097 *q++ = '/'; 1098 if (which == RTA_DST) 1099 return(inet6_makenetandmask(&su->sin6, q)); 1100 return(0); 1101 } 1102 #endif /* INET6 */ 1103 1104 case AF_APPLETALK: 1105 if (!atalk_aton(str, &su->sat.sat_addr)) 1106 errx(EX_NOHOST, "bad address: %s", str); 1107 rtm_addrs |= RTA_NETMASK; 1108 return(forcehost || su->sat.sat_addr.s_node != 0); 1109 1110 case AF_LINK: 1111 link_addr(str, &su->sdl); 1112 return(1); 1113 1114 case PF_ROUTE: 1115 su->sa.sa_len = sizeof(*su); 1116 sockaddr(str, &su->sa); 1117 return(1); 1118 1119 case AF_MPLS: 1120 { 1121 mpls_label_t label; 1122 1123 bzero(su, sizeof(*su)); 1124 su->sa.sa_len = sizeof(*su); 1125 su->sa.sa_family = AF_MPLS; 1126 su->smpls.smpls_op = mplsop; 1127 if (mplsop != MPLSLOP_POP && mplsop != MPLSLOP_POPALL && 1128 *str != '\0') { 1129 if (sscanf(str, "%u", &label) != 1) 1130 errx(EX_NOHOST, "bad address: %s", str); 1131 su->smpls.smpls_label = htonl(label); 1132 } 1133 return(1); 1134 } 1135 1136 case AF_INET: 1137 default: 1138 break; 1139 } 1140 1141 if (hpp == NULL) 1142 hpp = &hp; 1143 *hpp = NULL; 1144 1145 q = strchr(str,'/'); 1146 if (q != NULL && which == RTA_DST) { 1147 *q = '\0'; 1148 if ((val = inet_network(str)) != INADDR_NONE) { 1149 inet_makenetandmask( 1150 val, &su->sin, strtoul(q+1, 0, 0)); 1151 return(0); 1152 } 1153 *q = '/'; 1154 } 1155 if ((which != RTA_DST || forcenet == 0) && 1156 inet_aton(str, &su->sin.sin_addr)) { 1157 val = su->sin.sin_addr.s_addr; 1158 if (which != RTA_DST || 1159 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1160 return(1); 1161 else { 1162 val = ntohl(val); 1163 goto netdone; 1164 } 1165 } 1166 if (which == RTA_DST && forcehost == 0 && 1167 ((val = inet_network(str)) != INADDR_NONE || 1168 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) { 1169 netdone: 1170 inet_makenetandmask(val, &su->sin, 0); 1171 return(0); 1172 } 1173 hp = gethostbyname(str); 1174 if (hp != NULL) { 1175 *hpp = hp; 1176 su->sin.sin_family = hp->h_addrtype; 1177 memmove((char *)&su->sin.sin_addr, hp->h_addr, 1178 MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr))); 1179 return(1); 1180 } 1181 errx(EX_NOHOST, "bad address: %s", str); 1182 } 1183 1184 static int 1185 prefixlen(const char *len_str) 1186 { 1187 int len = atoi(len_str), q, r; 1188 int max; 1189 char *p; 1190 1191 rtm_addrs |= RTA_NETMASK; 1192 switch (af) { 1193 #ifdef INET6 1194 case AF_INET6: 1195 max = 128; 1196 p = (char *)&so_mask.sin6.sin6_addr; 1197 break; 1198 #endif 1199 case AF_INET: 1200 max = 32; 1201 p = (char *)&so_mask.sin.sin_addr; 1202 break; 1203 default: 1204 fprintf(stderr, "prefixlen not supported in this af\n"); 1205 exit(1); 1206 /*NOTREACHED*/ 1207 } 1208 1209 if (len < 0 || max < len) { 1210 fprintf(stderr, "%s: bad value\n", len_str); 1211 exit(1); 1212 } 1213 1214 q = len >> 3; 1215 r = len & 7; 1216 so_mask.sa.sa_family = af; 1217 so_mask.sa.sa_len = aflen; 1218 memset((void *)p, 0, max / 8); 1219 if (q > 0) 1220 memset((void *)p, 0xff, q); 1221 if (r > 0) 1222 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1223 if (len == max) 1224 return(-1); 1225 else 1226 return(len); 1227 } 1228 1229 static void 1230 interfaces(void) 1231 { 1232 size_t needed; 1233 int mib[6]; 1234 char *buf, *lim, *next; 1235 struct rt_msghdr *rtm; 1236 1237 mib[0] = CTL_NET; 1238 mib[1] = PF_ROUTE; 1239 mib[2] = 0; /* protocol */ 1240 mib[3] = 0; /* wildcard address family */ 1241 mib[4] = NET_RT_IFLIST; 1242 mib[5] = 0; /* no flags */ 1243 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1244 err(EX_OSERR, "route-sysctl-estimate"); 1245 if ((buf = malloc(needed)) == NULL) 1246 errx(EX_OSERR, "malloc failed"); 1247 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1248 err(EX_OSERR, "actual retrieval of interface table"); 1249 lim = buf + needed; 1250 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1251 rtm = (struct rt_msghdr *)next; 1252 print_rtmsg(rtm, rtm->rtm_msglen); 1253 } 1254 } 1255 1256 static void 1257 monitor(void) 1258 { 1259 int n; 1260 char msg[2048]; 1261 1262 verbose = 1; 1263 if (debugonly) { 1264 interfaces(); 1265 exit(0); 1266 } 1267 for (;;) { 1268 time_t now; 1269 n = read(s, msg, 2048); 1270 now = time(NULL); 1271 printf("\ngot message of size %d on %s", n, ctime(&now)); 1272 print_rtmsg((struct rt_msghdr *)msg, n); 1273 } 1274 } 1275 1276 struct { 1277 struct rt_msghdr m_rtm; 1278 char m_space[512]; 1279 } m_rtmsg; 1280 1281 static int 1282 rtmsg(int cmd, int flags) 1283 { 1284 static int seq; 1285 int rlen; 1286 char *cp = m_rtmsg.m_space; 1287 int l; 1288 1289 #define NEXTADDR(w, u) \ 1290 if (rtm_addrs & (w)) {\ 1291 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1292 if (verbose) sodump(&(u),"u");\ 1293 } 1294 1295 errno = 0; 1296 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1297 if (cmd == 'a') 1298 cmd = RTM_ADD; 1299 else if (cmd == 'c') 1300 cmd = RTM_CHANGE; 1301 else if (cmd == 'g') { 1302 cmd = RTM_GET; 1303 if (so_ifp.sa.sa_family == 0) { 1304 so_ifp.sa.sa_family = AF_LINK; 1305 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1306 rtm_addrs |= RTA_IFP; 1307 } 1308 } else 1309 cmd = RTM_DELETE; 1310 #define rtm m_rtmsg.m_rtm 1311 rtm.rtm_type = cmd; 1312 rtm.rtm_flags = flags; 1313 rtm.rtm_version = RTM_VERSION; 1314 rtm.rtm_seq = ++seq; 1315 rtm.rtm_addrs = rtm_addrs; 1316 rtm.rtm_rmx = rt_metrics; 1317 rtm.rtm_inits = rtm_inits; 1318 1319 if (rtm_addrs & RTA_NETMASK) 1320 mask_addr(); 1321 NEXTADDR(RTA_DST, so_dst); 1322 NEXTADDR(RTA_GATEWAY, so_gate); 1323 NEXTADDR(RTA_NETMASK, so_mask); 1324 NEXTADDR(RTA_GENMASK, so_genmask); 1325 NEXTADDR(RTA_IFP, so_ifp); 1326 NEXTADDR(RTA_IFA, so_ifa); 1327 NEXTADDR(RTA_MPLS1, so_mpls1); 1328 NEXTADDR(RTA_MPLS2, so_mpls2); 1329 NEXTADDR(RTA_MPLS3, so_mpls3); 1330 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1331 if (verbose) 1332 print_rtmsg(&rtm, l); 1333 if (debugonly) 1334 return(0); 1335 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1336 warn("writing to routing socket"); 1337 return(-1); 1338 } 1339 if (cmd == RTM_GET) { 1340 do { 1341 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1342 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1343 if (l < 0) 1344 warn("read from routing socket"); 1345 else 1346 print_getmsg(&rtm, l); 1347 } 1348 #undef rtm 1349 return(0); 1350 } 1351 1352 static void 1353 mask_addr(void) 1354 { 1355 int olen = so_mask.sa.sa_len; 1356 char *cp1 = olen + (char *)&so_mask, *cp2; 1357 1358 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1359 if (*--cp1 != 0) { 1360 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1361 break; 1362 } 1363 if ((rtm_addrs & RTA_DST) == 0) 1364 return; 1365 switch (so_dst.sa.sa_family) { 1366 case AF_INET: 1367 #ifdef INET6 1368 case AF_INET6: 1369 #endif 1370 case AF_APPLETALK: 1371 case 0: 1372 return; 1373 } 1374 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1375 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1376 while (cp2 > cp1) 1377 *--cp2 = 0; 1378 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1379 while (cp1 > so_dst.sa.sa_data) 1380 *--cp1 &= *--cp2; 1381 } 1382 1383 const char *msgtypes[] = { 1384 "", 1385 "RTM_ADD: Add Route", 1386 "RTM_DELETE: Delete Route", 1387 "RTM_CHANGE: Change Metrics or flags", 1388 "RTM_GET: Report Metrics", 1389 "RTM_LOSING: Kernel Suspects Partitioning", 1390 "RTM_REDIRECT: Told to use different route", 1391 "RTM_MISS: Lookup failed on this address", 1392 "RTM_LOCK: fix specified metrics", 1393 "RTM_OLDADD: caused by SIOCADDRT", 1394 "RTM_OLDDEL: caused by SIOCDELRT", 1395 "RTM_RESOLVE: Route created by cloning", 1396 "RTM_NEWADDR: address being added to iface", 1397 "RTM_DELADDR: address being removed from iface", 1398 "RTM_IFINFO: iface status change", 1399 "RTM_NEWMADDR: new multicast group membership on iface", 1400 "RTM_DELMADDR: multicast group membership removed from iface", 1401 "RTM_IFANNOUNCE: interface arrival/departure", 1402 0, 1403 }; 1404 1405 char metricnames[] = 1406 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1407 "\1mtu"; 1408 char routeflags[] = 1409 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1410 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1411 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1412 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1413 char ifnetflags[] = 1414 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1415 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1416 "\017LINK2\020MULTICAST"; 1417 char addrnames[] = 1418 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD" 1419 "\011MPLS1\012MPLS2\013MPLS3"; 1420 1421 static void 1422 print_rtmsg(struct rt_msghdr *rtm, int msglen __unused) 1423 { 1424 struct if_msghdr *ifm; 1425 struct ifa_msghdr *ifam; 1426 #ifdef RTM_NEWMADDR 1427 struct ifma_msghdr *ifmam; 1428 #endif 1429 struct if_announcemsghdr *ifan; 1430 1431 if (verbose == 0) 1432 return; 1433 if (rtm->rtm_version != RTM_VERSION) { 1434 printf("routing message version %d not understood\n", 1435 rtm->rtm_version); 1436 return; 1437 } 1438 if (msgtypes[rtm->rtm_type] != NULL) 1439 printf("%s: ", msgtypes[rtm->rtm_type]); 1440 else 1441 printf("#%d: ", rtm->rtm_type); 1442 printf("len %d, ", rtm->rtm_msglen); 1443 switch (rtm->rtm_type) { 1444 case RTM_IFINFO: 1445 ifm = (struct if_msghdr *)rtm; 1446 printf("if# %d, flags:", ifm->ifm_index); 1447 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1448 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1449 break; 1450 case RTM_NEWADDR: 1451 case RTM_DELADDR: 1452 ifam = (struct ifa_msghdr *)rtm; 1453 printf("metric %d, flags:", ifam->ifam_metric); 1454 bprintf(stdout, ifam->ifam_flags, routeflags); 1455 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1456 break; 1457 #ifdef RTM_NEWMADDR 1458 case RTM_NEWMADDR: 1459 case RTM_DELMADDR: 1460 ifmam = (struct ifma_msghdr *)rtm; 1461 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1462 break; 1463 #endif 1464 case RTM_IFANNOUNCE: 1465 ifan = (struct if_announcemsghdr *)rtm; 1466 printf("if# %d, what: ", ifan->ifan_index); 1467 switch (ifan->ifan_what) { 1468 case IFAN_ARRIVAL: 1469 printf("arrival"); 1470 break; 1471 case IFAN_DEPARTURE: 1472 printf("departure"); 1473 break; 1474 default: 1475 printf("#%d", ifan->ifan_what); 1476 break; 1477 } 1478 printf("\n"); 1479 break; 1480 1481 default: 1482 printf("pid: %ld, seq %d, errno %d, flags:", 1483 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1484 bprintf(stdout, rtm->rtm_flags, routeflags); 1485 pmsg_common(rtm); 1486 } 1487 } 1488 1489 static void 1490 print_getmsg(struct rt_msghdr *rtm, int msglen) 1491 { 1492 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1493 struct sockaddr_dl *ifp = NULL; 1494 struct sockaddr *sa; 1495 char *cp; 1496 int i; 1497 1498 printf(" route to: %s\n", routename(&so_dst.sa)); 1499 if (rtm->rtm_version != RTM_VERSION) { 1500 warnx("routing message version %d not understood", 1501 rtm->rtm_version); 1502 return; 1503 } 1504 if (rtm->rtm_msglen > msglen) { 1505 warnx("message length mismatch, in packet %d, returned %d", 1506 rtm->rtm_msglen, msglen); 1507 } 1508 if (rtm->rtm_errno != 0) { 1509 errno = rtm->rtm_errno; 1510 warn("message indicates error %d", errno); 1511 return; 1512 } 1513 cp = ((char *)(rtm + 1)); 1514 if (rtm->rtm_addrs) 1515 for (i = 1; i != 0; i <<= 1) 1516 if (i & rtm->rtm_addrs) { 1517 sa = (struct sockaddr *)cp; 1518 switch (i) { 1519 case RTA_DST: 1520 dst = sa; 1521 break; 1522 case RTA_GATEWAY: 1523 gate = sa; 1524 break; 1525 case RTA_NETMASK: 1526 mask = sa; 1527 break; 1528 case RTA_IFP: 1529 if (sa->sa_family == AF_LINK && 1530 ((struct sockaddr_dl *)sa)->sdl_nlen) 1531 ifp = (struct sockaddr_dl *)sa; 1532 break; 1533 } 1534 ADVANCE(cp, sa); 1535 } 1536 if (dst != NULL && mask != NULL) 1537 mask->sa_family = dst->sa_family; /* XXX */ 1538 if (dst != NULL) 1539 printf("destination: %s\n", routename(dst)); 1540 if (mask != NULL) { 1541 int savenflag = nflag; 1542 1543 nflag = 1; 1544 printf(" mask: %s\n", routename(mask)); 1545 nflag = savenflag; 1546 } 1547 if (gate != NULL && rtm->rtm_flags & RTF_GATEWAY) 1548 printf(" gateway: %s\n", routename(gate)); 1549 if (ifp != NULL) 1550 printf(" interface: %.*s\n", 1551 ifp->sdl_nlen, ifp->sdl_data); 1552 printf(" flags: "); 1553 bprintf(stdout, rtm->rtm_flags, routeflags); 1554 1555 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1556 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1557 1558 printf("\n%s\n", "\ 1559 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1560 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1561 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1562 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1563 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1564 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1565 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1566 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1567 if (rtm->rtm_rmx.rmx_expire != 0) 1568 rtm->rtm_rmx.rmx_expire -= time(0); 1569 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1570 #undef lock 1571 #undef msec 1572 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1573 if (verbose) 1574 pmsg_common(rtm); 1575 else if (rtm->rtm_addrs &~ RTA_IGN) { 1576 printf("sockaddrs: "); 1577 bprintf(stdout, rtm->rtm_addrs, addrnames); 1578 putchar('\n'); 1579 } 1580 #undef RTA_IGN 1581 } 1582 1583 static void 1584 pmsg_common(struct rt_msghdr *rtm) 1585 { 1586 printf("\nlocks: "); 1587 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1588 printf(" inits: "); 1589 bprintf(stdout, rtm->rtm_inits, metricnames); 1590 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1591 } 1592 1593 static void 1594 pmsg_addrs(char *cp, int addrs) 1595 { 1596 struct sockaddr *sa; 1597 int i; 1598 1599 if (addrs == 0) { 1600 putchar('\n'); 1601 return; 1602 } 1603 printf("\nsockaddrs: "); 1604 bprintf(stdout, addrs, addrnames); 1605 putchar('\n'); 1606 for (i = 1; i != 0; i <<= 1) 1607 if (i & addrs) { 1608 sa = (struct sockaddr *)cp; 1609 printf(" %s", routename(sa)); 1610 ADVANCE(cp, sa); 1611 } 1612 putchar('\n'); 1613 fflush(stdout); 1614 } 1615 1616 static void 1617 bprintf(FILE *fp, int b, u_char *str) 1618 { 1619 int i; 1620 int gotsome = 0; 1621 1622 if (b == 0) 1623 return; 1624 while ((i = *str++) != 0) { 1625 if (b & (1 << (i-1))) { 1626 if (!gotsome) 1627 i = '<'; 1628 else 1629 i = ','; 1630 putc(i, fp); 1631 gotsome = 1; 1632 for (; (i = *str) > 32; str++) 1633 putc(i, fp); 1634 } else 1635 while (*str > 32) 1636 str++; 1637 } 1638 if (gotsome) 1639 putc('>', fp); 1640 } 1641 1642 int 1643 keyword(const char *cp) 1644 { 1645 struct keytab *kt = keywords; 1646 1647 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0) 1648 kt++; 1649 return(kt->kt_i); 1650 } 1651 1652 static void 1653 sodump(sup su, const char *which) 1654 { 1655 switch (su->sa.sa_family) { 1656 case AF_LINK: 1657 printf("%s: link %s; ", 1658 which, link_ntoa(&su->sdl)); 1659 break; 1660 case AF_INET: 1661 printf("%s: inet %s; ", 1662 which, inet_ntoa(su->sin.sin_addr)); 1663 break; 1664 case AF_APPLETALK: 1665 printf("%s: atalk %s; ", 1666 which, atalk_ntoa(su->sat.sat_addr)); 1667 break; 1668 } 1669 fflush(stdout); 1670 } 1671 1672 /* States*/ 1673 #define VIRGIN 0 1674 #define GOTONE 1 1675 #define GOTTWO 2 1676 /* Inputs */ 1677 #define DIGIT (4*0) 1678 #define END (4*1) 1679 #define DELIM (4*2) 1680 1681 static void 1682 sockaddr(const char *addr, struct sockaddr *sa) 1683 { 1684 char *cp = (char *)sa; 1685 int size = sa->sa_len; 1686 char *cplim = cp + size; 1687 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1688 1689 memset(cp, 0, size); 1690 cp++; 1691 do { 1692 if ((*addr >= '0') && (*addr <= '9')) { 1693 new = *addr - '0'; 1694 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1695 new = *addr - 'a' + 10; 1696 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1697 new = *addr - 'A' + 10; 1698 } else if (*addr == '\0') 1699 state |= END; 1700 else 1701 state |= DELIM; 1702 addr++; 1703 switch (state /* | INPUT */) { 1704 case GOTTWO | DIGIT: 1705 *cp++ = byte; /*FALLTHROUGH*/ 1706 case VIRGIN | DIGIT: 1707 state = GOTONE; byte = new; continue; 1708 case GOTONE | DIGIT: 1709 state = GOTTWO; byte = new + (byte << 4); continue; 1710 default: /* | DELIM */ 1711 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1712 case GOTONE | END: 1713 case GOTTWO | END: 1714 *cp++ = byte; /* FALLTHROUGH */ 1715 case VIRGIN | END: 1716 break; 1717 } 1718 break; 1719 } while (cp < cplim); 1720 sa->sa_len = cp - (char *)sa; 1721 } 1722 1723 static int 1724 atalk_aton(const char *text, struct at_addr *addr) 1725 { 1726 u_int net, node; 1727 1728 if (sscanf(text, "%u.%u", &net, &node) != 2 1729 || net > 0xffff || node > 0xff) 1730 return(0); 1731 addr->s_net = htons(net); 1732 addr->s_node = node; 1733 return(1); 1734 } 1735 1736 static char * 1737 atalk_ntoa(struct at_addr at) 1738 { 1739 static char buf[20]; 1740 1741 snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1742 return(buf); 1743 } 1744