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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#) Copyright (c) 1983, 1989, 1991, 1993 The Regents of the University of California. All rights reserved. 30 * @(#)route.c 8.6 (Berkeley) 4/28/95 31 * $FreeBSD: src/sbin/route/route.c,v 1.40.2.11 2003/02/27 23:10:10 ru Exp $ 32 */ 33 34 #include <sys/param.h> 35 #include <sys/file.h> 36 #include <sys/socket.h> 37 #include <sys/ioctl.h> 38 #include <sys/sysctl.h> 39 #include <sys/types.h> 40 41 #include <net/if.h> 42 #include <net/route.h> 43 #include <net/if_dl.h> 44 #include <netinet/in.h> 45 #include <netinet/if_ether.h> 46 #include <arpa/inet.h> 47 #include <netdb.h> 48 49 #include <netproto/mpls/mpls.h> 50 51 #include <ctype.h> 52 #include <err.h> 53 #include <errno.h> 54 #include <paths.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <sysexits.h> 59 #include <unistd.h> 60 #include <ifaddrs.h> 61 62 #include "extern.h" 63 64 union sockunion { 65 struct sockaddr sa; 66 struct sockaddr_in sin; 67 #ifdef INET6 68 struct sockaddr_in6 sin6; 69 #endif 70 struct sockaddr_mpls smpls; 71 struct sockaddr_dl sdl; 72 struct sockaddr_inarp sinarp; 73 struct sockaddr_storage ss; /* added to avoid memory overrun */ 74 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp, so_mpls1, 75 so_mpls2, so_mpls3; 76 77 typedef union sockunion *sup; 78 79 int nflag, wflag; 80 int cpuflag = -1; 81 82 static struct keytab { 83 const char *kt_cp; 84 int kt_i; 85 } const keywords[] = { 86 #include "keywords.h" 87 {0, 0} 88 }; 89 90 static struct sockaddr_in so_gate_tried; 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 void flushroutes(int, char **); 102 static void set_metric(char *, int); 103 static void newroute(int, char **) __dead2; 104 static void inet_makenetandmask(u_long, struct sockaddr_in *, u_long); 105 static void interfaces(void); 106 static void monitor(void) __dead2; 107 static void sockaddr(const char *, struct sockaddr *); 108 static void sodump(sup, const char *); 109 static void bprintf(FILE *, int, u_char *); 110 static void print_getmsg(struct rt_msghdr *, int); 111 static void print_rtmsg(struct rt_msghdr *, int); 112 static void pmsg_common(struct rt_msghdr *); 113 static void pmsg_addrs(char *, int); 114 static void mask_addr(void); 115 static int getaddr(int, const char *, struct hostent **); 116 static int rtmsg(int, int); 117 static int prefixlen(const char *); 118 #ifdef INET6 119 static int inet6_makenetandmask(struct sockaddr_in6 *, const char *); 120 #endif 121 122 void 123 usage(const char *cp) 124 { 125 if (cp != NULL) 126 warnx("bad keyword: %s", cp); 127 fprintf(stderr, "usage: route [-dnqtvw] [-c cpu] command [[modifiers] args]\n"); 128 exit(EX_USAGE); 129 /* NOTREACHED */ 130 } 131 132 int 133 main(int argc, char **argv) 134 { 135 int ch; 136 137 if (argc < 2) 138 usage(NULL); 139 140 while ((ch = getopt(argc, argv, "c:wnqdtv")) != -1) 141 switch(ch) { 142 case 'c': 143 cpuflag = strtol(optarg, NULL, 0); 144 break; 145 case 'w': 146 wflag = 1; 147 break; 148 case 'n': 149 nflag = 1; 150 break; 151 case 'q': 152 qflag = 1; 153 break; 154 case 'v': 155 verbose = 1; 156 break; 157 case 't': 158 tflag = 1; 159 break; 160 case 'd': 161 debugonly = 1; 162 break; 163 case '?': 164 default: 165 usage(NULL); 166 } 167 argc -= optind; 168 argv += optind; 169 170 pid = getpid(); 171 uid = geteuid(); 172 if (tflag) 173 s = open(_PATH_DEVNULL, O_WRONLY, 0); 174 else 175 s = socket(PF_ROUTE, SOCK_RAW, 0); 176 if (s < 0) 177 err(EX_OSERR, "socket"); 178 if (*argv != NULL) 179 switch (keyword(*argv)) { 180 case K_GET: 181 uid = 0; 182 /* FALLTHROUGH */ 183 184 case K_CHANGE: 185 case K_ADD: 186 case K_DELETE: 187 newroute(argc, argv); 188 /* NOTREACHED */ 189 190 case K_SHOW: 191 show(argc, argv); 192 return(0); 193 194 case K_MONITOR: 195 monitor(); 196 /* NOTREACHED */ 197 198 case K_FLUSH: 199 flushroutes(argc, argv); 200 exit(0); 201 /* NOTREACHED */ 202 } 203 usage(*argv); 204 /* NOTREACHED */ 205 } 206 207 /* 208 * Purge all entries in the routing tables not 209 * associated with network interfaces. 210 */ 211 static void 212 flushroutes(int argc, char **argv) 213 { 214 size_t needed; 215 int mib[7], rlen, seqno; 216 int miblen; 217 char *buf, *next, *lim; 218 struct rt_msghdr *rtm; 219 220 if (uid != 0) { 221 errx(EX_NOPERM, "must be root to alter routing table"); 222 } 223 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 224 if (argc > 1) { 225 argv++; 226 if (argc == 2 && **argv == '-') 227 switch (keyword(*argv + 1)) { 228 case K_INET: 229 af = AF_INET; 230 break; 231 #ifdef INET6 232 case K_INET6: 233 af = AF_INET6; 234 break; 235 #endif 236 case K_LINK: 237 af = AF_LINK; 238 break; 239 case K_MPLS: 240 af = AF_MPLS; 241 break; 242 default: 243 goto bad; 244 } else 245 bad: usage(*argv); 246 } 247 mib[0] = CTL_NET; 248 mib[1] = PF_ROUTE; 249 mib[2] = 0; /* protocol */ 250 mib[3] = 0; /* wildcard address family */ 251 mib[4] = NET_RT_DUMP; 252 mib[5] = 0; /* no flags */ 253 if (cpuflag >= 0) { 254 mib[6] = cpuflag; 255 miblen = 7; 256 } else { 257 miblen = 6; 258 } 259 if (sysctl(mib, miblen, NULL, &needed, NULL, 0) < 0) 260 err(EX_OSERR, "route-sysctl-estimate"); 261 if ((buf = malloc(needed)) == NULL) 262 errx(EX_OSERR, "malloc failed"); 263 if (sysctl(mib, miblen, buf, &needed, NULL, 0) < 0) 264 err(EX_OSERR, "route-sysctl-get"); 265 lim = buf + needed; 266 if (verbose) 267 printf("Examining routing table from sysctl\n"); 268 seqno = 0; /* ??? */ 269 for (next = buf; next < lim; next += rtm->rtm_msglen) { 270 rtm = (struct rt_msghdr *)next; 271 if (verbose) 272 print_rtmsg(rtm, rtm->rtm_msglen); 273 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 274 continue; 275 if (af != 0) { 276 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 277 278 if (sa->sa_family != af) 279 continue; 280 } 281 if (debugonly) 282 continue; 283 rtm->rtm_type = RTM_DELETE; 284 rtm->rtm_seq = seqno; 285 rlen = write(s, next, rtm->rtm_msglen); 286 if (rlen < (int)rtm->rtm_msglen) { 287 warn("write to routing socket"); 288 printf("got only %d for rlen\n", rlen); 289 break; 290 } 291 seqno++; 292 if (qflag) 293 continue; 294 if (verbose) { 295 print_rtmsg(rtm, rlen); 296 } else { 297 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 298 if (wflag) { 299 printf("%-20s ", rtm->rtm_flags & RTF_HOST ? 300 routename(sa) : netname(sa)); 301 } else { 302 printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 303 routename(sa) : netname(sa)); 304 } 305 sa = (struct sockaddr *)(RT_ROUNDUP(sa->sa_len) + 306 (char *)sa); 307 if (wflag) { 308 printf("%-20s ", routename(sa)); 309 } else { 310 printf("%-20.20s ", routename(sa)); 311 } 312 printf("done\n"); 313 } 314 } 315 } 316 317 char * 318 routename(struct sockaddr *sa) 319 { 320 const char *cp; 321 static char line[MAXHOSTNAMELEN + 1]; 322 struct hostent *hp; 323 static char domain[MAXHOSTNAMELEN + 1]; 324 static int first = 1; 325 326 if (first) { 327 first = 0; 328 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 329 (cp = strchr(domain, '.'))) { 330 domain[MAXHOSTNAMELEN] = '\0'; 331 strcpy(domain, cp + 1); 332 } else 333 domain[0] = 0; 334 } 335 336 if (sa->sa_len == 0) 337 strcpy(line, "default"); 338 else switch (sa->sa_family) { 339 340 case AF_INET: 341 { struct in_addr in; 342 in = ((struct sockaddr_in *)sa)->sin_addr; 343 344 cp = NULL; 345 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 346 cp = "default"; 347 if (cp == NULL && !nflag) { 348 hp = gethostbyaddr(&in, sizeof(struct in_addr), 349 AF_INET); 350 if (hp != NULL) { 351 char *cptr; 352 cptr = strchr(hp->h_name, '.'); 353 if (cptr != NULL && !wflag && 354 strcmp(cptr + 1, domain) == 0) 355 *cptr = '\0'; 356 cp = hp->h_name; 357 } 358 } 359 if (cp != NULL) { 360 strncpy(line, cp, sizeof(line) - 1); 361 line[sizeof(line) - 1] = '\0'; 362 } else 363 sprintf(line, "%s", inet_ntoa(in)); 364 break; 365 } 366 367 #ifdef INET6 368 case AF_INET6: 369 { 370 struct sockaddr_in6 sin6; /* use static var for safety */ 371 int niflags = 0; 372 #ifdef NI_WITHSCOPEID 373 niflags = NI_WITHSCOPEID; 374 #endif 375 376 memset(&sin6, 0, sizeof(sin6)); 377 memcpy(&sin6, sa, sa->sa_len); 378 sin6.sin6_len = sizeof(struct sockaddr_in6); 379 sin6.sin6_family = AF_INET6; 380 #ifdef __KAME__ 381 if (sa->sa_len == sizeof(struct sockaddr_in6) && 382 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 383 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 384 sin6.sin6_scope_id == 0) { 385 sin6.sin6_scope_id = 386 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 387 sin6.sin6_addr.s6_addr[2] = 0; 388 sin6.sin6_addr.s6_addr[3] = 0; 389 } 390 #endif 391 if (nflag) 392 niflags |= NI_NUMERICHOST; 393 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 394 line, sizeof(line), NULL, 0, niflags) != 0) 395 strncpy(line, "invalid", sizeof(line)); 396 397 return(line); 398 } 399 #endif 400 401 case AF_LINK: 402 return(link_ntoa((struct sockaddr_dl *)sa)); 403 404 default: 405 { 406 /* 407 * Unknown address family; just render the raw 408 * data in sa->sa_data as hex values. 409 */ 410 uint8_t *sp = (uint8_t *)sa->sa_data; 411 uint8_t *splim = (uint8_t *)sa + sa->sa_len; 412 char *cps = line + sprintf(line, "(%d)", sa->sa_family); 413 char *cpe = line + sizeof(line); 414 415 while (sp < splim && cps < cpe) 416 cps += snprintf(cps, cpe - cps, " %02x", *sp++); 417 break; 418 } 419 } 420 return(line); 421 } 422 423 /* 424 * Return the name of the network whose address is given. 425 * The address is assumed to be that of a net or subnet, not a host. 426 */ 427 char * 428 netname(struct sockaddr *sa) 429 { 430 const char *cp = NULL; 431 static char line[MAXHOSTNAMELEN + 1]; 432 struct netent *np = NULL; 433 u_long net, mask; 434 u_long i; 435 int subnetshift; 436 437 switch (sa->sa_family) { 438 439 case AF_INET: 440 { struct in_addr in; 441 in = ((struct sockaddr_in *)sa)->sin_addr; 442 443 i = in.s_addr = ntohl(in.s_addr); 444 if (in.s_addr == 0) 445 cp = "default"; 446 else if (!nflag) { 447 if (IN_CLASSA(i)) { 448 mask = IN_CLASSA_NET; 449 subnetshift = 8; 450 } else if (IN_CLASSB(i)) { 451 mask = IN_CLASSB_NET; 452 subnetshift = 8; 453 } else { 454 mask = IN_CLASSC_NET; 455 subnetshift = 4; 456 } 457 /* 458 * If there are more bits than the standard mask 459 * would suggest, subnets must be in use. 460 * Guess at the subnet mask, assuming reasonable 461 * width subnet fields. 462 */ 463 while (in.s_addr &~ mask) 464 mask |= mask >> subnetshift; 465 net = in.s_addr & mask; 466 while ((mask & 1) == 0) 467 mask >>= 1, net >>= 1; 468 np = getnetbyaddr(net, AF_INET); 469 if (np != NULL) 470 cp = np->n_name; 471 } 472 #define C(x) (unsigned)((x) & 0xff) 473 if (cp != NULL) 474 strncpy(line, cp, sizeof(line)); 475 else if ((in.s_addr & 0xffffff) == 0) 476 sprintf(line, "%u", C(in.s_addr >> 24)); 477 else if ((in.s_addr & 0xffff) == 0) 478 sprintf(line, "%u.%u", C(in.s_addr >> 24), 479 C(in.s_addr >> 16)); 480 else if ((in.s_addr & 0xff) == 0) 481 sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 482 C(in.s_addr >> 16), C(in.s_addr >> 8)); 483 else 484 sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 485 C(in.s_addr >> 16), C(in.s_addr >> 8), 486 C(in.s_addr)); 487 #undef C 488 break; 489 } 490 491 #ifdef INET6 492 case AF_INET6: 493 { 494 struct sockaddr_in6 sin6; /* use static var for safety */ 495 int niflags = 0; 496 #ifdef NI_WITHSCOPEID 497 niflags = NI_WITHSCOPEID; 498 #endif 499 500 memset(&sin6, 0, sizeof(sin6)); 501 memcpy(&sin6, sa, sa->sa_len); 502 sin6.sin6_len = sizeof(struct sockaddr_in6); 503 sin6.sin6_family = AF_INET6; 504 #ifdef __KAME__ 505 if (sa->sa_len == sizeof(struct sockaddr_in6) && 506 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 507 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 508 sin6.sin6_scope_id == 0) { 509 sin6.sin6_scope_id = 510 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 511 sin6.sin6_addr.s6_addr[2] = 0; 512 sin6.sin6_addr.s6_addr[3] = 0; 513 } 514 #endif 515 if (nflag) 516 niflags |= NI_NUMERICHOST; 517 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 518 line, sizeof(line), NULL, 0, niflags) != 0) 519 strncpy(line, "invalid", sizeof(line)); 520 521 return(line); 522 } 523 #endif 524 525 case AF_LINK: 526 return(link_ntoa((struct sockaddr_dl *)sa)); 527 528 529 default: 530 { 531 /* 532 * Unknown address family; just render the raw 533 * data in sa->sa_data as hex values. 534 */ 535 uint8_t *sp = (uint8_t *)sa->sa_data; 536 uint8_t *splim = (uint8_t *)sa + sa->sa_len; 537 char *cps = line + sprintf(line, "af %d:", sa->sa_family); 538 char *cpe = line + sizeof(line); 539 540 while (sp < splim && cps < cpe) 541 cps += snprintf(cps, cpe - cps, " %02x", *sp++); 542 break; 543 } 544 } 545 return(line); 546 } 547 548 static void 549 set_metric(char *value, int key) 550 { 551 int flag = 0; 552 u_long noval, *valp = &noval; 553 554 switch (key) { 555 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 556 caseof(K_MTU, RTV_MTU, rmx_mtu); 557 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 558 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 559 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 560 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 561 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 562 caseof(K_RTT, RTV_RTT, rmx_rtt); 563 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 564 caseof(K_MSL, RTV_MSL, rmx_msl); 565 caseof(K_IWMAX, RTV_IWMAXSEGS, rmx_iwmaxsegs); 566 caseof(K_IW, RTV_IWCAPSEGS, rmx_iwcapsegs); 567 } 568 rtm_inits |= flag; 569 if (lockrest || locking) 570 rt_metrics.rmx_locks |= flag; 571 if (locking) 572 locking = 0; 573 *valp = atoi(value); 574 } 575 576 static void 577 newroute(int argc, char **argv) 578 { 579 char *cmd; 580 const char *err_str, *dest = "", *gateway = ""; 581 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC; 582 int key; 583 struct hostent *hp = NULL; 584 585 if (uid != 0) { 586 errx(EX_NOPERM, "must be root to alter routing table"); 587 } 588 cmd = argv[0]; 589 if (*cmd != 'g') 590 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 591 while (--argc > 0) { 592 if (**(++argv)== '-') { 593 switch (key = keyword(1 + *argv)) { 594 case K_LINK: 595 af = AF_LINK; 596 aflen = sizeof(struct sockaddr_dl); 597 break; 598 case K_INET: 599 af = AF_INET; 600 aflen = sizeof(struct sockaddr_in); 601 break; 602 #ifdef INET6 603 case K_INET6: 604 af = AF_INET6; 605 aflen = sizeof(struct sockaddr_in6); 606 break; 607 #endif 608 case K_SA: 609 af = PF_ROUTE; 610 aflen = sizeof(union sockunion); 611 break; 612 case K_IFACE: 613 case K_INTERFACE: 614 iflag++; 615 break; 616 case K_NOSTATIC: 617 flags &= ~RTF_STATIC; 618 break; 619 case K_LLINFO: 620 flags |= RTF_LLINFO; 621 break; 622 case K_LOCK: 623 locking = 1; 624 break; 625 case K_LOCKREST: 626 lockrest = 1; 627 break; 628 case K_HOST: 629 forcehost++; 630 break; 631 case K_REJECT: 632 flags |= RTF_REJECT; 633 break; 634 case K_BLACKHOLE: 635 flags |= RTF_BLACKHOLE; 636 break; 637 case K_PROTO1: 638 flags |= RTF_PROTO1; 639 break; 640 case K_PROTO2: 641 flags |= RTF_PROTO2; 642 break; 643 case K_PROXY: 644 proxy = 1; 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 == 0) 657 usage(NULL); 658 getaddr(RTA_IFA, *++argv, 0); 659 break; 660 case K_IFP: 661 if (--argc == 0) 662 usage(NULL); 663 getaddr(RTA_IFP, *++argv, 0); 664 break; 665 case K_GENMASK: 666 if (--argc == 0) 667 usage(NULL); 668 getaddr(RTA_GENMASK, *++argv, 0); 669 break; 670 case K_GATEWAY: 671 if (--argc == 0) 672 usage(NULL); 673 getaddr(RTA_GATEWAY, *++argv, 0); 674 break; 675 case K_DST: 676 if (--argc == 0) 677 usage(NULL); 678 ishost = getaddr(RTA_DST, *++argv, &hp); 679 dest = *argv; 680 break; 681 case K_NETMASK: 682 if (--argc == 0) 683 usage(NULL); 684 getaddr(RTA_NETMASK, *++argv, 0); 685 /* FALLTHROUGH */ 686 case K_NET: 687 forcenet++; 688 break; 689 case K_PREFIXLEN: 690 if (--argc == 0) 691 usage(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_MPLS: 701 af = AF_MPLS; 702 aflen = sizeof(struct sockaddr_mpls); 703 break; 704 case K_POP: 705 flags |= RTF_MPLSOPS; 706 af = AF_MPLS; 707 mplsop = MPLSLOP_POP; 708 switch(++popcount){ 709 case 1: 710 getaddr(RTA_MPLS1, "", 0); 711 break; 712 case 2: 713 getaddr(RTA_MPLS2, "", 0); 714 break; 715 case 3: 716 getaddr(RTA_MPLS3, "", 0); 717 break; 718 } 719 break; 720 case K_PUSH: 721 case K_SWAP: 722 if (popcount > 0) { 723 warnx("Push or swap after pop. Ignoring."); 724 break; 725 } 726 if (key == K_PUSH) { 727 mplsop = MPLSLOP_PUSH; 728 ++pushcount; 729 } else { 730 if (pushcount > 0) { 731 warnx("Swap after push. Ignoring."); 732 break; 733 } 734 if (swapcount > 0) { 735 warnx("Too many swaps. Ignoring."); 736 break; 737 } 738 mplsop = MPLSLOP_SWAP; 739 ++swapcount; 740 } 741 flags |= RTF_MPLSOPS; 742 af = AF_MPLS; 743 aflen = sizeof(struct sockaddr_mpls); 744 if (--argc == 0) 745 usage(NULL); 746 switch(pushcount + swapcount){ 747 case 1: 748 getaddr(RTA_MPLS1, *++argv, 0); 749 break; 750 case 2: 751 getaddr(RTA_MPLS2, *++argv, 0); 752 break; 753 case 3: 754 getaddr(RTA_MPLS3, *++argv, 0); 755 break; 756 } 757 break; 758 case K_MTU: 759 case K_HOPCOUNT: 760 case K_EXPIRE: 761 case K_RECVPIPE: 762 case K_SENDPIPE: 763 case K_SSTHRESH: 764 case K_RTT: 765 case K_RTTVAR: 766 case K_MSL: 767 case K_IWMAX: 768 case K_IW: 769 if (--argc == 0) 770 usage(NULL); 771 set_metric(*++argv, key); 772 break; 773 default: 774 usage(1+*argv); 775 } 776 } else { 777 if ((rtm_addrs & RTA_DST) == 0) { 778 dest = *argv; 779 ishost = getaddr(RTA_DST, *argv, &hp); 780 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 781 gateway = *argv; 782 getaddr(RTA_GATEWAY, *argv, &hp); 783 } else { 784 getaddr(RTA_NETMASK, *argv, 0); 785 forcenet = 1; 786 } 787 } 788 } 789 if (forcehost) { 790 ishost = 1; 791 #ifdef INET6 792 if (af == AF_INET6) { 793 rtm_addrs &= ~RTA_NETMASK; 794 memset((void *)&so_mask, 0, sizeof(so_mask)); 795 } 796 #endif 797 } 798 if (forcenet) 799 ishost = 0; 800 flags |= RTF_UP; 801 if (ishost) 802 flags |= RTF_HOST; 803 if (iflag == 0) 804 flags |= RTF_GATEWAY; 805 if (proxy) { 806 so_dst.sinarp.sin_other = SIN_PROXY; 807 flags |= RTF_ANNOUNCE; 808 } 809 for (attempts = 1; ; attempts++) { 810 errno = 0; 811 if ((ret = rtmsg(*cmd, flags)) == 0) 812 break; 813 if (errno != ENETUNREACH && errno != ESRCH) 814 break; 815 if (af == AF_INET && *gateway != '\0' && 816 hp != NULL && hp->h_addr_list[1] != NULL) { 817 so_gate_tried = so_gate.sin; 818 hp->h_addr_list++; 819 memmove(&so_gate.sin.sin_addr, 820 hp->h_addr_list[0], 821 MIN((size_t)hp->h_length, 822 sizeof(so_gate.sin.sin_addr))); 823 } else 824 break; 825 } 826 if (*cmd == 'g') 827 exit(0); 828 if (!qflag) { 829 oerrno = errno; 830 printf("%s %s %s", cmd, ishost? "host" : "net", dest); 831 if (*gateway != '\0') { 832 printf(": gateway %s", gateway); 833 if (attempts > 1 && ret == 0 && af == AF_INET) { 834 printf(" (%s)", 835 inet_ntoa(so_gate_tried.sin_addr)); 836 } 837 } 838 if (ret == 0) { 839 printf("\n"); 840 } else { 841 switch (oerrno) { 842 case ESRCH: 843 err_str = "not in table"; 844 break; 845 case EBUSY: 846 err_str = "entry in use"; 847 break; 848 case ENOBUFS: 849 err_str = "routing table overflow"; 850 break; 851 case EDQUOT: /* handle recursion avoidance in 852 rt_setgate() */ 853 err_str = "gateway uses the same route"; 854 break; 855 default: 856 err_str = strerror(oerrno); 857 break; 858 } 859 printf(": %s\n", err_str); 860 } 861 } 862 exit(ret != 0); 863 } 864 865 static void 866 inet_makenetandmask(u_long net, struct sockaddr_in *in, u_long bits) 867 { 868 u_long addr, mask = 0; 869 char *cp; 870 871 rtm_addrs |= RTA_NETMASK; 872 /* 873 * XXX: This approach unable to handle 0.0.0.1/32 correctly 874 * as inet_network() converts 0.0.0.1 and 1 equally. 875 */ 876 if (net <= 0xff) 877 addr = net << IN_CLASSA_NSHIFT; 878 else if (net <= 0xffff) 879 addr = net << IN_CLASSB_NSHIFT; 880 else if (net <= 0xffffff) 881 addr = net << IN_CLASSC_NSHIFT; 882 else 883 addr = net; 884 885 if (bits != 0) 886 mask = 0xffffffff << (32 - bits); 887 else if (net == 0) 888 mask = 0; 889 else if (IN_CLASSA(addr)) 890 mask = IN_CLASSA_NET; 891 else if (IN_CLASSB(addr)) 892 mask = IN_CLASSB_NET; 893 else if (IN_CLASSC(addr)) 894 mask = IN_CLASSC_NET; 895 else if (IN_MULTICAST(addr)) 896 mask = IN_CLASSD_NET; 897 else 898 mask = 0xffffffff; 899 900 in->sin_addr.s_addr = htonl(addr); 901 in = &so_mask.sin; 902 in->sin_addr.s_addr = htonl(mask); 903 in->sin_len = 0; 904 in->sin_family = 0; 905 cp = (char *)(&in->sin_addr + 1); 906 while (*--cp == 0 && cp > (char *)in) 907 ; 908 in->sin_len = 1 + cp - (char *)in; 909 } 910 911 #ifdef INET6 912 /* 913 * XXX the function may need more improvement... 914 */ 915 static int 916 inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen) 917 { 918 struct in6_addr in6; 919 920 if (plen == NULL) { 921 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 922 sin6->sin6_scope_id == 0) { 923 plen = "0"; 924 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 925 /* aggregatable global unicast - RFC2374 */ 926 memset(&in6, 0, sizeof(in6)); 927 if (memcmp(&sin6->sin6_addr.s6_addr[8], 928 &in6.s6_addr[8], 8) == 0) 929 plen = "64"; 930 } 931 } 932 933 if (plen == NULL || strcmp(plen, "128") == 0) 934 return(1); 935 rtm_addrs |= RTA_NETMASK; 936 prefixlen(plen); 937 return(0); 938 } 939 #endif 940 941 /* 942 * Interpret an argument as a network address of some kind, 943 * returning 1 if a host address, 0 if a network address. 944 */ 945 static int 946 getaddr(int which, const char *str, struct hostent **hpp) 947 { 948 sup su; 949 struct hostent *hp; 950 struct netent *np; 951 u_long val; 952 char *q; 953 int afamily; /* local copy of af so we can change it */ 954 955 if (af == 0) { 956 af = AF_INET; 957 aflen = sizeof(struct sockaddr_in); 958 } 959 afamily = af; 960 rtm_addrs |= which; 961 switch (which) { 962 case RTA_DST: 963 su = &so_dst; 964 break; 965 case RTA_GATEWAY: 966 su = &so_gate; 967 if (iflag) { 968 struct ifaddrs *ifap, *ifa; 969 struct sockaddr_dl *sdl = NULL; 970 971 if (getifaddrs(&ifap)) 972 err(1, "getifaddrs"); 973 974 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) { 975 if (ifa->ifa_addr->sa_family != AF_LINK) 976 continue; 977 978 if (strcmp(str, ifa->ifa_name) != 0) 979 continue; 980 981 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 982 } 983 /* If we found it, then use it */ 984 if (sdl != NULL) { 985 /* 986 * Copy is safe since we have a 987 * sockaddr_storage member in sockunion{}. 988 * Note that we need to copy before calling 989 * freeifaddrs(). 990 * 991 * Interface routes are routed only by their 992 * sdl_index or interface name (we provide 993 * both here), not by the ARP address of the 994 * local interface (alen, slen = 0). 995 */ 996 memcpy(&su->sdl, sdl, sdl->sdl_len); 997 su->sdl.sdl_alen = 0; 998 su->sdl.sdl_slen = 0; 999 } 1000 freeifaddrs(ifap); 1001 if (sdl != NULL) 1002 return(1); 1003 } 1004 break; 1005 case RTA_NETMASK: 1006 su = &so_mask; 1007 break; 1008 case RTA_GENMASK: 1009 su = &so_genmask; 1010 break; 1011 case RTA_IFP: 1012 su = &so_ifp; 1013 afamily = AF_LINK; 1014 break; 1015 case RTA_IFA: 1016 su = &so_ifa; 1017 break; 1018 case RTA_MPLS1: 1019 su = &so_mpls1; 1020 break; 1021 case RTA_MPLS2: 1022 su = &so_mpls2; 1023 break; 1024 case RTA_MPLS3: 1025 su = &so_mpls3; 1026 break; 1027 default: 1028 usage("internal error"); 1029 /*NOTREACHED*/ 1030 } 1031 su->sa.sa_len = aflen; 1032 su->sa.sa_family = afamily; /* cases that don't want it have left 1033 already */ 1034 if (strcmp(str, "default") == 0) { 1035 /* 1036 * Default is net 0.0.0.0/0 1037 */ 1038 switch (which) { 1039 case RTA_DST: 1040 forcenet++; 1041 /* bzero(su, sizeof(*su)); *//* for readability */ 1042 getaddr(RTA_NETMASK, str, 0); 1043 break; 1044 case RTA_NETMASK: 1045 case RTA_GENMASK: 1046 /* bzero(su, sizeof(*su)); *//* for readability */ 1047 break; 1048 } 1049 return(0); 1050 } 1051 switch (afamily) { 1052 #ifdef INET6 1053 case AF_INET6: 1054 { 1055 struct addrinfo hints, *res; 1056 1057 q = NULL; 1058 if (which == RTA_DST && (q = strchr(str, '/')) != NULL) 1059 *q = '\0'; 1060 memset(&hints, 0, sizeof(hints)); 1061 hints.ai_family = afamily; /*AF_INET6*/ 1062 hints.ai_flags = AI_NUMERICHOST; 1063 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1064 if (getaddrinfo(str, "0", &hints, &res) != 0 || 1065 res->ai_family != AF_INET6 || 1066 res->ai_addrlen != sizeof(su->sin6)) { 1067 fprintf(stderr, "%s: bad value\n", str); 1068 exit(1); 1069 } 1070 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1071 #ifdef __KAME__ 1072 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1073 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) && 1074 su->sin6.sin6_scope_id) { 1075 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1076 htons(su->sin6.sin6_scope_id); 1077 su->sin6.sin6_scope_id = 0; 1078 } 1079 #endif 1080 freeaddrinfo(res); 1081 if (q != NULL) 1082 *q++ = '/'; 1083 if (which == RTA_DST) 1084 return(inet6_makenetandmask(&su->sin6, q)); 1085 return(0); 1086 } 1087 #endif /* INET6 */ 1088 1089 case AF_LINK: 1090 link_addr(str, &su->sdl); 1091 return(1); 1092 1093 case PF_ROUTE: 1094 su->sa.sa_len = sizeof(*su); 1095 sockaddr(str, &su->sa); 1096 return(1); 1097 1098 case AF_MPLS: 1099 { 1100 mpls_label_t label; 1101 1102 bzero(su, sizeof(*su)); 1103 su->sa.sa_len = sizeof(*su); 1104 su->sa.sa_family = AF_MPLS; 1105 su->smpls.smpls_op = mplsop; 1106 if (mplsop != MPLSLOP_POP && mplsop != MPLSLOP_POPALL && 1107 *str != '\0') { 1108 if (sscanf(str, "%u", &label) != 1) 1109 errx(EX_NOHOST, "bad address: %s", str); 1110 su->smpls.smpls_label = htonl(label); 1111 } 1112 return(1); 1113 } 1114 1115 case AF_INET: 1116 default: 1117 break; 1118 } 1119 1120 if (hpp == NULL) 1121 hpp = &hp; 1122 *hpp = NULL; 1123 1124 q = strchr(str,'/'); 1125 if (q != NULL && which == RTA_DST) { 1126 *q = '\0'; 1127 if ((val = inet_network(str)) != INADDR_NONE) { 1128 inet_makenetandmask( 1129 val, &su->sin, strtoul(q+1, 0, 0)); 1130 return(0); 1131 } 1132 *q = '/'; 1133 } 1134 if ((which != RTA_DST || forcenet == 0) && 1135 inet_aton(str, &su->sin.sin_addr)) { 1136 val = su->sin.sin_addr.s_addr; 1137 if (which != RTA_DST || 1138 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1139 return(1); 1140 else { 1141 val = ntohl(val); 1142 goto netdone; 1143 } 1144 } 1145 if (which == RTA_DST && forcehost == 0 && 1146 ((val = inet_network(str)) != INADDR_NONE || 1147 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) { 1148 netdone: 1149 inet_makenetandmask(val, &su->sin, 0); 1150 return(0); 1151 } 1152 hp = gethostbyname(str); 1153 if (hp != NULL) { 1154 *hpp = hp; 1155 su->sin.sin_family = hp->h_addrtype; 1156 memmove((char *)&su->sin.sin_addr, hp->h_addr, 1157 MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr))); 1158 return(1); 1159 } 1160 errx(EX_NOHOST, "bad address: %s", str); 1161 } 1162 1163 static int 1164 prefixlen(const char *len_str) 1165 { 1166 int len = atoi(len_str), q, r; 1167 int max; 1168 char *p; 1169 1170 rtm_addrs |= RTA_NETMASK; 1171 switch (af) { 1172 #ifdef INET6 1173 case AF_INET6: 1174 max = 128; 1175 p = (char *)&so_mask.sin6.sin6_addr; 1176 break; 1177 #endif 1178 case AF_INET: 1179 max = 32; 1180 p = (char *)&so_mask.sin.sin_addr; 1181 break; 1182 default: 1183 fprintf(stderr, "prefixlen not supported in this af\n"); 1184 exit(1); 1185 /*NOTREACHED*/ 1186 } 1187 1188 if (len < 0 || max < len) { 1189 fprintf(stderr, "%s: bad value\n", len_str); 1190 exit(1); 1191 } 1192 1193 q = len >> 3; 1194 r = len & 7; 1195 so_mask.sa.sa_family = af; 1196 so_mask.sa.sa_len = aflen; 1197 memset((void *)p, 0, max / 8); 1198 if (q > 0) 1199 memset((void *)p, 0xff, q); 1200 if (r > 0) 1201 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1202 if (len == max) 1203 return(-1); 1204 else 1205 return(len); 1206 } 1207 1208 static void 1209 interfaces(void) 1210 { 1211 size_t needed; 1212 int mib[6]; 1213 char *buf, *lim, *next; 1214 struct rt_msghdr *rtm; 1215 1216 mib[0] = CTL_NET; 1217 mib[1] = PF_ROUTE; 1218 mib[2] = 0; /* protocol */ 1219 mib[3] = 0; /* wildcard address family */ 1220 mib[4] = NET_RT_IFLIST; 1221 mib[5] = 0; /* no flags */ 1222 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1223 err(EX_OSERR, "route-sysctl-estimate"); 1224 if ((buf = malloc(needed)) == NULL) 1225 errx(EX_OSERR, "malloc failed"); 1226 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1227 err(EX_OSERR, "actual retrieval of interface table"); 1228 lim = buf + needed; 1229 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1230 rtm = (struct rt_msghdr *)next; 1231 print_rtmsg(rtm, rtm->rtm_msglen); 1232 } 1233 } 1234 1235 static void 1236 monitor(void) 1237 { 1238 int n; 1239 char msg[2048]; 1240 1241 verbose = 1; 1242 if (debugonly) { 1243 interfaces(); 1244 exit(0); 1245 } 1246 for (;;) { 1247 time_t now; 1248 n = read(s, msg, 2048); 1249 now = time(NULL); 1250 printf("\ngot message of size %d on %s", n, ctime(&now)); 1251 print_rtmsg((struct rt_msghdr *)msg, n); 1252 } 1253 } 1254 1255 struct { 1256 struct rt_msghdr m_rtm; 1257 char m_space[512]; 1258 } m_rtmsg; 1259 1260 static int 1261 rtmsg(int cmd, int flags) 1262 { 1263 static int seq; 1264 int rlen; 1265 char *cp = m_rtmsg.m_space; 1266 int l; 1267 1268 #define NEXTADDR(w, u) \ 1269 if (rtm_addrs & (w)) {\ 1270 l = RT_ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1271 if (verbose) sodump(&(u),"u");\ 1272 } 1273 1274 errno = 0; 1275 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1276 if (cmd == 'a') 1277 cmd = RTM_ADD; 1278 else if (cmd == 'c') 1279 cmd = RTM_CHANGE; 1280 else if (cmd == 'g') { 1281 cmd = RTM_GET; 1282 if (so_ifp.sa.sa_family == 0) { 1283 so_ifp.sa.sa_family = AF_LINK; 1284 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1285 rtm_addrs |= RTA_IFP; 1286 } 1287 } else 1288 cmd = RTM_DELETE; 1289 #define rtm m_rtmsg.m_rtm 1290 rtm.rtm_type = cmd; 1291 rtm.rtm_flags = flags; 1292 rtm.rtm_version = RTM_VERSION; 1293 rtm.rtm_seq = ++seq; 1294 rtm.rtm_addrs = rtm_addrs; 1295 rtm.rtm_rmx = rt_metrics; 1296 rtm.rtm_inits = rtm_inits; 1297 1298 if (rtm_addrs & RTA_NETMASK) 1299 mask_addr(); 1300 NEXTADDR(RTA_DST, so_dst); 1301 NEXTADDR(RTA_GATEWAY, so_gate); 1302 NEXTADDR(RTA_NETMASK, so_mask); 1303 NEXTADDR(RTA_GENMASK, so_genmask); 1304 NEXTADDR(RTA_IFP, so_ifp); 1305 NEXTADDR(RTA_IFA, so_ifa); 1306 NEXTADDR(RTA_MPLS1, so_mpls1); 1307 NEXTADDR(RTA_MPLS2, so_mpls2); 1308 NEXTADDR(RTA_MPLS3, so_mpls3); 1309 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1310 if (verbose) 1311 print_rtmsg(&rtm, l); 1312 if (debugonly) 1313 return(0); 1314 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1315 warn("writing to routing socket"); 1316 return(-1); 1317 } 1318 if (cmd == RTM_GET) { 1319 do { 1320 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1321 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1322 if (l < 0) 1323 warn("read from routing socket"); 1324 else 1325 print_getmsg(&rtm, l); 1326 } 1327 #undef rtm 1328 return(0); 1329 } 1330 1331 static void 1332 mask_addr(void) 1333 { 1334 int olen = so_mask.sa.sa_len; 1335 char *cp1 = olen + (char *)&so_mask, *cp2; 1336 1337 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1338 if (*--cp1 != 0) { 1339 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1340 break; 1341 } 1342 if ((rtm_addrs & RTA_DST) == 0) 1343 return; 1344 switch (so_dst.sa.sa_family) { 1345 case AF_INET: 1346 #ifdef INET6 1347 case AF_INET6: 1348 #endif 1349 case 0: 1350 return; 1351 } 1352 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1353 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1354 while (cp2 > cp1) 1355 *--cp2 = 0; 1356 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1357 while (cp1 > so_dst.sa.sa_data) 1358 *--cp1 &= *--cp2; 1359 } 1360 1361 const char *msgtypes[] = { 1362 "", 1363 "RTM_ADD: Add Route", 1364 "RTM_DELETE: Delete Route", 1365 "RTM_CHANGE: Change Metrics or flags", 1366 "RTM_GET: Report Metrics", 1367 "RTM_LOSING: Kernel Suspects Partitioning", 1368 "RTM_REDIRECT: Told to use different route", 1369 "RTM_MISS: Lookup failed on this address", 1370 "RTM_LOCK: fix specified metrics", 1371 "0x9: unused", 1372 "0xa: unused", 1373 "RTM_RESOLVE: Route created by cloning", 1374 "RTM_NEWADDR: address being added to iface", 1375 "RTM_DELADDR: address being removed from iface", 1376 "RTM_IFINFO: iface status change", 1377 "RTM_NEWMADDR: new multicast group membership on iface", 1378 "RTM_DELMADDR: multicast group membership removed from iface", 1379 "RTM_IFANNOUNCE: interface arrival/departure", 1380 0, 1381 }; 1382 1383 char metricnames[] = 1384 "\013iw\012iwmax\011msl\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire" 1385 "\2hopcount\1mtu"; 1386 char routeflags[] = 1387 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1388 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1389 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1390 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1391 char ifnetflags[] = 1392 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1393 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1394 "\017LINK2\020MULTICAST"; 1395 char addrnames[] = 1396 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD" 1397 "\011MPLS1\012MPLS2\013MPLS3"; 1398 1399 static void 1400 print_rtmsg(struct rt_msghdr *rtm, int msglen __unused) 1401 { 1402 struct if_msghdr *ifm; 1403 struct ifa_msghdr *ifam; 1404 #ifdef RTM_NEWMADDR 1405 struct ifma_msghdr *ifmam; 1406 #endif 1407 struct if_announcemsghdr *ifan; 1408 1409 if (verbose == 0) 1410 return; 1411 if (rtm->rtm_version != RTM_VERSION) { 1412 printf("routing message version %d not understood\n", 1413 rtm->rtm_version); 1414 return; 1415 } 1416 if (msgtypes[rtm->rtm_type] != NULL) 1417 printf("%s: ", msgtypes[rtm->rtm_type]); 1418 else 1419 printf("#%d: ", rtm->rtm_type); 1420 printf("len %d, ", rtm->rtm_msglen); 1421 switch (rtm->rtm_type) { 1422 case RTM_IFINFO: 1423 ifm = (struct if_msghdr *)rtm; 1424 printf("if# %d, flags:", ifm->ifm_index); 1425 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1426 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1427 break; 1428 case RTM_NEWADDR: 1429 case RTM_DELADDR: 1430 ifam = (struct ifa_msghdr *)rtm; 1431 printf("metric %d, flags:", ifam->ifam_metric); 1432 bprintf(stdout, ifam->ifam_flags, routeflags); 1433 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1434 break; 1435 #ifdef RTM_NEWMADDR 1436 case RTM_NEWMADDR: 1437 case RTM_DELMADDR: 1438 ifmam = (struct ifma_msghdr *)rtm; 1439 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1440 break; 1441 #endif 1442 case RTM_IFANNOUNCE: 1443 ifan = (struct if_announcemsghdr *)rtm; 1444 printf("if# %d, what: ", ifan->ifan_index); 1445 switch (ifan->ifan_what) { 1446 case IFAN_ARRIVAL: 1447 printf("arrival"); 1448 break; 1449 case IFAN_DEPARTURE: 1450 printf("departure"); 1451 break; 1452 default: 1453 printf("#%d", ifan->ifan_what); 1454 break; 1455 } 1456 printf("\n"); 1457 break; 1458 1459 default: 1460 printf("pid: %ld, seq %d, errno %d, flags:", 1461 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1462 bprintf(stdout, rtm->rtm_flags, routeflags); 1463 pmsg_common(rtm); 1464 } 1465 } 1466 1467 static void 1468 print_getmsg(struct rt_msghdr *rtm, int msglen) 1469 { 1470 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1471 struct sockaddr_dl *ifp = NULL; 1472 struct sockaddr *sa; 1473 char *cp; 1474 int i; 1475 1476 printf(" route to: %s\n", routename(&so_dst.sa)); 1477 if (rtm->rtm_version != RTM_VERSION) { 1478 warnx("routing message version %d not understood", 1479 rtm->rtm_version); 1480 return; 1481 } 1482 if (rtm->rtm_msglen > msglen) { 1483 warnx("message length mismatch, in packet %d, returned %d", 1484 rtm->rtm_msglen, msglen); 1485 } 1486 if (rtm->rtm_errno != 0) { 1487 errno = rtm->rtm_errno; 1488 warn("message indicates error %d", errno); 1489 return; 1490 } 1491 cp = ((char *)(rtm + 1)); 1492 if (rtm->rtm_addrs) 1493 for (i = 1; i != 0; i <<= 1) 1494 if (i & rtm->rtm_addrs) { 1495 sa = (struct sockaddr *)cp; 1496 switch (i) { 1497 case RTA_DST: 1498 dst = sa; 1499 break; 1500 case RTA_GATEWAY: 1501 gate = sa; 1502 break; 1503 case RTA_NETMASK: 1504 mask = sa; 1505 break; 1506 case RTA_IFP: 1507 if (sa->sa_family == AF_LINK && 1508 ((struct sockaddr_dl *)sa)->sdl_nlen) 1509 ifp = (struct sockaddr_dl *)sa; 1510 break; 1511 } 1512 RT_ADVANCE(cp, sa); 1513 } 1514 if (dst != NULL && mask != NULL) 1515 mask->sa_family = dst->sa_family; /* XXX */ 1516 if (dst != NULL) 1517 printf("destination: %s\n", routename(dst)); 1518 if (mask != NULL) { 1519 int savenflag = nflag; 1520 1521 nflag = 1; 1522 printf(" mask: %s\n", routename(mask)); 1523 nflag = savenflag; 1524 } 1525 if (gate != NULL && rtm->rtm_flags & RTF_GATEWAY) 1526 printf(" gateway: %s\n", routename(gate)); 1527 if (ifp != NULL) 1528 printf(" interface: %.*s\n", 1529 ifp->sdl_nlen, ifp->sdl_data); 1530 printf(" flags: "); 1531 bprintf(stdout, rtm->rtm_flags, routeflags); 1532 1533 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1534 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1535 1536 printf("\n%s\n", "\ 1537 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire msl,msec iwmax iw"); 1538 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1539 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1540 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1541 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1542 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1543 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1544 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1545 if (rtm->rtm_rmx.rmx_expire != 0) { 1546 struct timespec sp; 1547 clock_gettime(CLOCK_MONOTONIC, &sp); 1548 rtm->rtm_rmx.rmx_expire -= sp.tv_sec; 1549 } 1550 printf("%8ld%c ", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1551 printf("%8ld ", rtm->rtm_rmx.rmx_msl); 1552 printf("%5ld ", rtm->rtm_rmx.rmx_iwmaxsegs); 1553 printf("%3ld\n", rtm->rtm_rmx.rmx_iwcapsegs); 1554 #undef lock 1555 #undef msec 1556 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1557 if (verbose) 1558 pmsg_common(rtm); 1559 else if (rtm->rtm_addrs &~ RTA_IGN) { 1560 printf("sockaddrs: "); 1561 bprintf(stdout, rtm->rtm_addrs, addrnames); 1562 putchar('\n'); 1563 } 1564 #undef RTA_IGN 1565 } 1566 1567 static void 1568 pmsg_common(struct rt_msghdr *rtm) 1569 { 1570 printf("\nlocks: "); 1571 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1572 printf(" inits: "); 1573 bprintf(stdout, rtm->rtm_inits, metricnames); 1574 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1575 } 1576 1577 static void 1578 pmsg_addrs(char *cp, int addrs) 1579 { 1580 struct sockaddr *sa; 1581 int i; 1582 1583 if (addrs == 0) { 1584 putchar('\n'); 1585 return; 1586 } 1587 printf("\nsockaddrs: "); 1588 bprintf(stdout, addrs, addrnames); 1589 putchar('\n'); 1590 for (i = 1; i != 0; i <<= 1) 1591 if (i & addrs) { 1592 sa = (struct sockaddr *)cp; 1593 printf(" %s", routename(sa)); 1594 RT_ADVANCE(cp, sa); 1595 } 1596 putchar('\n'); 1597 fflush(stdout); 1598 } 1599 1600 static void 1601 bprintf(FILE *fp, int b, u_char *str) 1602 { 1603 int i; 1604 int gotsome = 0; 1605 1606 if (b == 0) 1607 return; 1608 while ((i = *str++) != 0) { 1609 if (b & (1 << (i-1))) { 1610 if (!gotsome) 1611 i = '<'; 1612 else 1613 i = ','; 1614 putc(i, fp); 1615 gotsome = 1; 1616 for (; (i = *str) > 32; str++) 1617 putc(i, fp); 1618 } else 1619 while (*str > 32) 1620 str++; 1621 } 1622 if (gotsome) 1623 putc('>', fp); 1624 } 1625 1626 int 1627 keyword(const char *cp) 1628 { 1629 const struct keytab *kt = keywords; 1630 1631 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0) 1632 kt++; 1633 return(kt->kt_i); 1634 } 1635 1636 static void 1637 sodump(sup su, const char *which) 1638 { 1639 switch (su->sa.sa_family) { 1640 case AF_LINK: 1641 printf("%s: link %s; ", 1642 which, link_ntoa(&su->sdl)); 1643 break; 1644 case AF_INET: 1645 printf("%s: inet %s; ", 1646 which, inet_ntoa(su->sin.sin_addr)); 1647 break; 1648 } 1649 fflush(stdout); 1650 } 1651 1652 /* States*/ 1653 #define VIRGIN 0 1654 #define GOTONE 1 1655 #define GOTTWO 2 1656 /* Inputs */ 1657 #define DIGIT (4*0) 1658 #define END (4*1) 1659 #define DELIM (4*2) 1660 1661 static void 1662 sockaddr(const char *addr, struct sockaddr *sa) 1663 { 1664 char *cp = (char *)sa; 1665 int size = sa->sa_len; 1666 char *cplim = cp + size; 1667 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1668 1669 memset(cp, 0, size); 1670 cp++; 1671 do { 1672 if ((*addr >= '0') && (*addr <= '9')) { 1673 new = *addr - '0'; 1674 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1675 new = *addr - 'a' + 10; 1676 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1677 new = *addr - 'A' + 10; 1678 } else if (*addr == '\0') 1679 state |= END; 1680 else 1681 state |= DELIM; 1682 addr++; 1683 switch (state /* | INPUT */) { 1684 case GOTTWO | DIGIT: 1685 *cp++ = byte; /*FALLTHROUGH*/ 1686 case VIRGIN | DIGIT: 1687 state = GOTONE; byte = new; continue; 1688 case GOTONE | DIGIT: 1689 state = GOTTWO; byte = new + (byte << 4); continue; 1690 default: /* | DELIM */ 1691 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1692 case GOTONE | END: 1693 case GOTTWO | END: 1694 *cp++ = byte; /* FALLTHROUGH */ 1695 case VIRGIN | END: 1696 break; 1697 } 1698 break; 1699 } while (cp < cplim); 1700 sa->sa_len = cp - (char *)sa; 1701 } 1702