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/socket.h> 36 #include <sys/ioctl.h> 37 #include <sys/sysctl.h> 38 #include <sys/types.h> 39 40 #include <net/if.h> 41 #include <net/route.h> 42 #include <net/if_dl.h> 43 #include <netinet/in.h> 44 #include <netinet/if_ether.h> 45 #include <arpa/inet.h> 46 #include <netdb.h> 47 48 #include <netproto/802_11/ieee80211_dragonfly.h> 49 #include <netproto/mpls/mpls.h> 50 51 #include <ctype.h> 52 #include <err.h> 53 #include <errno.h> 54 #include <fcntl.h> 55 #include <inttypes.h> 56 #include <paths.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <sysexits.h> 61 #include <unistd.h> 62 #include <ifaddrs.h> 63 64 #include "extern.h" 65 66 union sockunion { 67 struct sockaddr sa; 68 struct sockaddr_in sin; 69 #ifdef INET6 70 struct sockaddr_in6 sin6; 71 #endif 72 struct sockaddr_mpls smpls; 73 struct sockaddr_dl sdl; 74 struct sockaddr_inarp sinarp; 75 struct sockaddr_storage ss; /* added to avoid memory overrun */ 76 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp, so_mpls1, 77 so_mpls2, so_mpls3; 78 79 typedef union sockunion *sup; 80 81 int nflag, wflag; 82 int cpuflag = -1; 83 84 static struct keytab { 85 const char *kt_cp; 86 int kt_i; 87 } const keywords[] = { 88 #include "keywords.h" 89 {0, 0} 90 }; 91 92 static struct sockaddr_in so_gate_tried; 93 static struct rt_metrics rt_metrics; 94 static int pid, rtm_addrs; 95 static int s; 96 static int forcehost, forcenet, af, qflag, tflag; 97 static int iflag, verbose, aflen = sizeof(struct sockaddr_in); 98 static int locking, lockrest, debugonly; 99 static int mplsop, popcount, pushcount, swapcount; 100 static u_long rtm_inits; 101 static uid_t uid; 102 103 static void flushroutes(int, char **); 104 static void set_metric(char *, int); 105 static void newroute(int, char **) __dead2; 106 static void inet_makenetandmask(u_long, struct sockaddr_in *, u_long); 107 static void interfaces(void); 108 static void monitor(void) __dead2; 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 #define PRIETHER "02x:%02x:%02x:%02x:%02x:%02x" 125 #define PRIETHER_ARGS(__enaddr) (__enaddr)[0], (__enaddr)[1], (__enaddr)[2], \ 126 (__enaddr)[3], (__enaddr)[4], (__enaddr)[5] 127 128 void 129 usage(const char *cp) 130 { 131 if (cp != NULL) 132 warnx("bad keyword: %s", cp); 133 fprintf(stderr, "usage: route [-dnqtvw] [-c cpu] command [[modifiers] args]\n"); 134 exit(EX_USAGE); 135 /* NOTREACHED */ 136 } 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 { 181 182 s = socket(PF_ROUTE, SOCK_RAW, 0); 183 #ifdef SO_RERROR 184 int on = 1; 185 if (setsockopt(s, SOL_SOCKET, SO_RERROR, &on, sizeof(on)) == -1) 186 warn("SO_RERROR"); 187 #endif 188 } 189 if (s < 0) 190 err(EX_OSERR, "socket"); 191 if (*argv != NULL) 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 /* NOTREACHED */ 202 203 case K_SHOW: 204 show(argc, argv); 205 return(0); 206 207 case K_MONITOR: 208 monitor(); 209 /* NOTREACHED */ 210 211 case K_FLUSH: 212 flushroutes(argc, argv); 213 exit(0); 214 /* NOTREACHED */ 215 } 216 usage(*argv); 217 /* NOTREACHED */ 218 } 219 220 /* 221 * Purge all entries in the routing tables not 222 * associated with network interfaces. 223 */ 224 static void 225 flushroutes(int argc, char **argv) 226 { 227 size_t needed; 228 int mib[7], rlen, seqno; 229 int miblen; 230 char *buf, *next, *lim; 231 struct rt_msghdr *rtm; 232 233 if (uid != 0) { 234 errx(EX_NOPERM, "must be root to alter routing table"); 235 } 236 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 237 if (argc > 1) { 238 argv++; 239 if (argc == 2 && **argv == '-') 240 switch (keyword(*argv + 1)) { 241 case K_INET: 242 af = AF_INET; 243 break; 244 #ifdef INET6 245 case K_INET6: 246 af = AF_INET6; 247 break; 248 #endif 249 case K_LINK: 250 af = AF_LINK; 251 break; 252 case K_MPLS: 253 af = AF_MPLS; 254 break; 255 default: 256 goto bad; 257 } else 258 bad: usage(*argv); 259 } 260 mib[0] = CTL_NET; 261 mib[1] = PF_ROUTE; 262 mib[2] = 0; /* protocol */ 263 mib[3] = 0; /* wildcard address family */ 264 mib[4] = NET_RT_DUMP; 265 mib[5] = 0; /* no flags */ 266 if (cpuflag >= 0) { 267 mib[6] = cpuflag; 268 miblen = 7; 269 } else { 270 miblen = 6; 271 } 272 if (sysctl(mib, miblen, NULL, &needed, NULL, 0) < 0) 273 err(EX_OSERR, "route-sysctl-estimate"); 274 if ((buf = malloc(needed)) == NULL) 275 errx(EX_OSERR, "malloc failed"); 276 if (sysctl(mib, miblen, buf, &needed, NULL, 0) < 0) 277 err(EX_OSERR, "route-sysctl-get"); 278 lim = buf + needed; 279 if (verbose) 280 printf("Examining routing table from sysctl\n"); 281 seqno = 0; /* ??? */ 282 for (next = buf; next < lim; next += rtm->rtm_msglen) { 283 rtm = (struct rt_msghdr *)next; 284 if (verbose) 285 print_rtmsg(rtm, rtm->rtm_msglen); 286 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 287 continue; 288 if (af != 0) { 289 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 290 291 if (sa->sa_family != af) 292 continue; 293 } 294 if (debugonly) 295 continue; 296 rtm->rtm_type = RTM_DELETE; 297 rtm->rtm_seq = seqno; 298 rlen = write(s, next, rtm->rtm_msglen); 299 if (rlen < (int)rtm->rtm_msglen) { 300 warn("write to routing socket"); 301 printf("got only %d for rlen\n", rlen); 302 break; 303 } 304 seqno++; 305 if (qflag) 306 continue; 307 if (verbose) { 308 print_rtmsg(rtm, rlen); 309 } else { 310 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 311 if (wflag) { 312 printf("%-20s ", rtm->rtm_flags & RTF_HOST ? 313 routename(sa) : netname(sa)); 314 } else { 315 printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 316 routename(sa) : netname(sa)); 317 } 318 sa = (struct sockaddr *)(RT_ROUNDUP(sa->sa_len) + 319 (char *)sa); 320 if (wflag) { 321 printf("%-20s ", routename(sa)); 322 } else { 323 printf("%-20.20s ", routename(sa)); 324 } 325 printf("done\n"); 326 } 327 } 328 } 329 330 char * 331 routename(struct sockaddr *sa) 332 { 333 const char *cp; 334 static char line[MAXHOSTNAMELEN + 1]; 335 struct hostent *hp; 336 static char domain[MAXHOSTNAMELEN + 1]; 337 static int first = 1; 338 339 if (first) { 340 first = 0; 341 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 342 (cp = strchr(domain, '.'))) { 343 domain[MAXHOSTNAMELEN] = '\0'; 344 strcpy(domain, cp + 1); 345 } else 346 domain[0] = 0; 347 } 348 349 if (sa->sa_len == 0) 350 strcpy(line, "default"); 351 else switch (sa->sa_family) { 352 353 case AF_INET: 354 { struct in_addr in; 355 in = ((struct sockaddr_in *)sa)->sin_addr; 356 357 cp = NULL; 358 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 359 cp = "default"; 360 if (cp == NULL && !nflag) { 361 hp = gethostbyaddr(&in, sizeof(struct in_addr), 362 AF_INET); 363 if (hp != NULL) { 364 char *cptr; 365 cptr = strchr(hp->h_name, '.'); 366 if (cptr != NULL && !wflag && 367 strcmp(cptr + 1, domain) == 0) 368 *cptr = '\0'; 369 cp = hp->h_name; 370 } 371 } 372 if (cp != NULL) { 373 strncpy(line, cp, sizeof(line) - 1); 374 line[sizeof(line) - 1] = '\0'; 375 } else 376 sprintf(line, "%s", inet_ntoa(in)); 377 break; 378 } 379 380 #ifdef INET6 381 case AF_INET6: 382 { 383 struct sockaddr_in6 sin6; /* use static var for safety */ 384 int niflags = 0; 385 #ifdef NI_WITHSCOPEID 386 niflags = NI_WITHSCOPEID; 387 #endif 388 389 memset(&sin6, 0, sizeof(sin6)); 390 memcpy(&sin6, sa, sa->sa_len); 391 sin6.sin6_len = sizeof(struct sockaddr_in6); 392 sin6.sin6_family = AF_INET6; 393 #ifdef __KAME__ 394 if (sa->sa_len == sizeof(struct sockaddr_in6) && 395 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 396 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 397 sin6.sin6_scope_id == 0) { 398 sin6.sin6_scope_id = 399 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 400 sin6.sin6_addr.s6_addr[2] = 0; 401 sin6.sin6_addr.s6_addr[3] = 0; 402 } 403 #endif 404 if (nflag) 405 niflags |= NI_NUMERICHOST; 406 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 407 line, sizeof(line), NULL, 0, niflags) != 0) 408 strncpy(line, "invalid", sizeof(line)); 409 410 return(line); 411 } 412 #endif 413 414 case AF_LINK: 415 return(link_ntoa((struct sockaddr_dl *)sa)); 416 417 default: 418 { 419 /* 420 * Unknown address family; just render the raw 421 * data in sa->sa_data as hex values. 422 */ 423 uint8_t *sp = (uint8_t *)sa->sa_data; 424 uint8_t *splim = (uint8_t *)sa + sa->sa_len; 425 char *cps = line + sprintf(line, "(%d)", sa->sa_family); 426 char *cpe = line + sizeof(line); 427 428 while (sp < splim && cps < cpe) 429 cps += snprintf(cps, cpe - cps, " %02x", *sp++); 430 break; 431 } 432 } 433 return(line); 434 } 435 436 /* 437 * Return the name of the network whose address is given. 438 * The address is assumed to be that of a net or subnet, not a host. 439 */ 440 char * 441 netname(struct sockaddr *sa) 442 { 443 const char *cp = NULL; 444 static char line[MAXHOSTNAMELEN + 1]; 445 struct netent *np = NULL; 446 u_long net, mask; 447 u_long i; 448 int subnetshift; 449 450 switch (sa->sa_family) { 451 452 case AF_INET: 453 { struct in_addr in; 454 in = ((struct sockaddr_in *)sa)->sin_addr; 455 456 i = in.s_addr = ntohl(in.s_addr); 457 if (in.s_addr == 0) 458 cp = "default"; 459 else if (!nflag) { 460 if (IN_CLASSA(i)) { 461 mask = IN_CLASSA_NET; 462 subnetshift = 8; 463 } else if (IN_CLASSB(i)) { 464 mask = IN_CLASSB_NET; 465 subnetshift = 8; 466 } else { 467 mask = IN_CLASSC_NET; 468 subnetshift = 4; 469 } 470 /* 471 * If there are more bits than the standard mask 472 * would suggest, subnets must be in use. 473 * Guess at the subnet mask, assuming reasonable 474 * width subnet fields. 475 */ 476 while (in.s_addr &~ mask) 477 mask |= mask >> subnetshift; 478 net = in.s_addr & mask; 479 while ((mask & 1) == 0) 480 mask >>= 1, net >>= 1; 481 np = getnetbyaddr(net, AF_INET); 482 if (np != NULL) 483 cp = np->n_name; 484 } 485 #define C(x) (unsigned)((x) & 0xff) 486 if (cp != NULL) 487 strncpy(line, cp, sizeof(line)); 488 else if ((in.s_addr & 0xffffff) == 0) 489 sprintf(line, "%u", C(in.s_addr >> 24)); 490 else if ((in.s_addr & 0xffff) == 0) 491 sprintf(line, "%u.%u", C(in.s_addr >> 24), 492 C(in.s_addr >> 16)); 493 else if ((in.s_addr & 0xff) == 0) 494 sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 495 C(in.s_addr >> 16), C(in.s_addr >> 8)); 496 else 497 sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 498 C(in.s_addr >> 16), C(in.s_addr >> 8), 499 C(in.s_addr)); 500 #undef C 501 break; 502 } 503 504 #ifdef INET6 505 case AF_INET6: 506 { 507 struct sockaddr_in6 sin6; /* use static var for safety */ 508 int niflags = 0; 509 #ifdef NI_WITHSCOPEID 510 niflags = NI_WITHSCOPEID; 511 #endif 512 513 memset(&sin6, 0, sizeof(sin6)); 514 memcpy(&sin6, sa, sa->sa_len); 515 sin6.sin6_len = sizeof(struct sockaddr_in6); 516 sin6.sin6_family = AF_INET6; 517 #ifdef __KAME__ 518 if (sa->sa_len == sizeof(struct sockaddr_in6) && 519 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 520 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) && 521 sin6.sin6_scope_id == 0) { 522 sin6.sin6_scope_id = 523 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 524 sin6.sin6_addr.s6_addr[2] = 0; 525 sin6.sin6_addr.s6_addr[3] = 0; 526 } 527 #endif 528 if (nflag) 529 niflags |= NI_NUMERICHOST; 530 if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 531 line, sizeof(line), NULL, 0, niflags) != 0) 532 strncpy(line, "invalid", sizeof(line)); 533 534 return(line); 535 } 536 #endif 537 538 case AF_LINK: 539 return(link_ntoa((struct sockaddr_dl *)sa)); 540 541 542 default: 543 { 544 /* 545 * Unknown address family; just render the raw 546 * data in sa->sa_data as hex values. 547 */ 548 uint8_t *sp = (uint8_t *)sa->sa_data; 549 uint8_t *splim = (uint8_t *)sa + sa->sa_len; 550 char *cps = line + sprintf(line, "af %d:", sa->sa_family); 551 char *cpe = line + sizeof(line); 552 553 while (sp < splim && cps < cpe) 554 cps += snprintf(cps, cpe - cps, " %02x", *sp++); 555 break; 556 } 557 } 558 return(line); 559 } 560 561 static void 562 set_metric(char *value, int key) 563 { 564 int flag = 0; 565 u_long noval, *valp = &noval; 566 567 switch (key) { 568 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 569 caseof(K_MTU, RTV_MTU, rmx_mtu); 570 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 571 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 572 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 573 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 574 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 575 caseof(K_RTT, RTV_RTT, rmx_rtt); 576 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 577 caseof(K_MSL, RTV_MSL, rmx_msl); 578 caseof(K_IWMAX, RTV_IWMAXSEGS, rmx_iwmaxsegs); 579 caseof(K_IW, RTV_IWCAPSEGS, rmx_iwcapsegs); 580 } 581 rtm_inits |= flag; 582 if (lockrest || locking) 583 rt_metrics.rmx_locks |= flag; 584 if (locking) 585 locking = 0; 586 *valp = atoi(value); 587 } 588 589 static void 590 newroute(int argc, char **argv) 591 { 592 char *cmd; 593 const char *err_str, *dest = "", *gateway = ""; 594 int ishost = 0, proxy = 0, ret, attempts, oerrno, flags = RTF_STATIC; 595 int key; 596 struct hostent *hp = NULL; 597 598 if (uid != 0) { 599 errx(EX_NOPERM, "must be root to alter routing table"); 600 } 601 cmd = argv[0]; 602 if (*cmd != 'g') 603 shutdown(s, SHUT_RD); /* Don't want to read back our messages */ 604 while (--argc > 0) { 605 if (**(++argv)== '-') { 606 switch (key = keyword(1 + *argv)) { 607 case K_LINK: 608 af = AF_LINK; 609 aflen = sizeof(struct sockaddr_dl); 610 break; 611 case K_INET: 612 af = AF_INET; 613 aflen = sizeof(struct sockaddr_in); 614 break; 615 #ifdef INET6 616 case K_INET6: 617 af = AF_INET6; 618 aflen = sizeof(struct sockaddr_in6); 619 break; 620 #endif 621 case K_SA: 622 af = PF_ROUTE; 623 aflen = sizeof(union sockunion); 624 break; 625 case K_IFACE: 626 case K_INTERFACE: 627 iflag++; 628 break; 629 case K_NOSTATIC: 630 flags &= ~RTF_STATIC; 631 break; 632 case K_LLINFO: 633 flags |= RTF_LLINFO; 634 break; 635 case K_LOCK: 636 locking = 1; 637 break; 638 case K_LOCKREST: 639 lockrest = 1; 640 break; 641 case K_HOST: 642 forcehost++; 643 break; 644 case K_REJECT: 645 flags |= RTF_REJECT; 646 break; 647 case K_BLACKHOLE: 648 flags |= RTF_BLACKHOLE; 649 break; 650 case K_PROTO1: 651 flags |= RTF_PROTO1; 652 break; 653 case K_PROTO2: 654 flags |= RTF_PROTO2; 655 break; 656 case K_PROXY: 657 proxy = 1; 658 break; 659 case K_CLONING: 660 flags |= RTF_CLONING; 661 break; 662 case K_XRESOLVE: 663 flags |= RTF_XRESOLVE; 664 break; 665 case K_STATIC: 666 flags |= RTF_STATIC; 667 break; 668 case K_IFA: 669 if (--argc == 0) 670 usage(NULL); 671 getaddr(RTA_IFA, *++argv, 0); 672 break; 673 case K_IFP: 674 if (--argc == 0) 675 usage(NULL); 676 getaddr(RTA_IFP, *++argv, 0); 677 break; 678 case K_GENMASK: 679 if (--argc == 0) 680 usage(NULL); 681 getaddr(RTA_GENMASK, *++argv, 0); 682 break; 683 case K_GATEWAY: 684 if (--argc == 0) 685 usage(NULL); 686 getaddr(RTA_GATEWAY, *++argv, 0); 687 break; 688 case K_DST: 689 if (--argc == 0) 690 usage(NULL); 691 ishost = getaddr(RTA_DST, *++argv, &hp); 692 dest = *argv; 693 break; 694 case K_NETMASK: 695 if (--argc == 0) 696 usage(NULL); 697 getaddr(RTA_NETMASK, *++argv, 0); 698 /* FALLTHROUGH */ 699 case K_NET: 700 forcenet++; 701 break; 702 case K_PREFIXLEN: 703 if (--argc == 0) 704 usage(NULL); 705 if (prefixlen(*++argv) == -1) { 706 forcenet = 0; 707 ishost = 1; 708 } else { 709 forcenet = 1; 710 ishost = 0; 711 } 712 break; 713 case K_MPLS: 714 af = AF_MPLS; 715 aflen = sizeof(struct sockaddr_mpls); 716 break; 717 case K_POP: 718 flags |= RTF_MPLSOPS; 719 af = AF_MPLS; 720 mplsop = MPLSLOP_POP; 721 switch(++popcount){ 722 case 1: 723 getaddr(RTA_MPLS1, "", 0); 724 break; 725 case 2: 726 getaddr(RTA_MPLS2, "", 0); 727 break; 728 case 3: 729 getaddr(RTA_MPLS3, "", 0); 730 break; 731 } 732 break; 733 case K_PUSH: 734 case K_SWAP: 735 if (popcount > 0) { 736 warnx("Push or swap after pop. Ignoring."); 737 break; 738 } 739 if (key == K_PUSH) { 740 mplsop = MPLSLOP_PUSH; 741 ++pushcount; 742 } else { 743 if (pushcount > 0) { 744 warnx("Swap after push. Ignoring."); 745 break; 746 } 747 if (swapcount > 0) { 748 warnx("Too many swaps. Ignoring."); 749 break; 750 } 751 mplsop = MPLSLOP_SWAP; 752 ++swapcount; 753 } 754 flags |= RTF_MPLSOPS; 755 af = AF_MPLS; 756 aflen = sizeof(struct sockaddr_mpls); 757 if (--argc == 0) 758 usage(NULL); 759 switch(pushcount + swapcount){ 760 case 1: 761 getaddr(RTA_MPLS1, *++argv, 0); 762 break; 763 case 2: 764 getaddr(RTA_MPLS2, *++argv, 0); 765 break; 766 case 3: 767 getaddr(RTA_MPLS3, *++argv, 0); 768 break; 769 } 770 break; 771 case K_MTU: 772 case K_HOPCOUNT: 773 case K_EXPIRE: 774 case K_RECVPIPE: 775 case K_SENDPIPE: 776 case K_SSTHRESH: 777 case K_RTT: 778 case K_RTTVAR: 779 case K_MSL: 780 case K_IWMAX: 781 case K_IW: 782 if (--argc == 0) 783 usage(NULL); 784 set_metric(*++argv, key); 785 break; 786 default: 787 usage(1+*argv); 788 } 789 } else { 790 if ((rtm_addrs & RTA_DST) == 0) { 791 dest = *argv; 792 ishost = getaddr(RTA_DST, *argv, &hp); 793 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 794 gateway = *argv; 795 getaddr(RTA_GATEWAY, *argv, &hp); 796 } else { 797 getaddr(RTA_NETMASK, *argv, 0); 798 forcenet = 1; 799 } 800 } 801 } 802 if (forcehost) { 803 ishost = 1; 804 #ifdef INET6 805 if (af == AF_INET6) { 806 rtm_addrs &= ~RTA_NETMASK; 807 memset((void *)&so_mask, 0, sizeof(so_mask)); 808 } 809 #endif 810 } 811 if (forcenet) 812 ishost = 0; 813 flags |= RTF_UP; 814 if (ishost) 815 flags |= RTF_HOST; 816 if (iflag == 0) 817 flags |= RTF_GATEWAY; 818 if (proxy) { 819 so_dst.sinarp.sin_other = SIN_PROXY; 820 flags |= RTF_ANNOUNCE; 821 } 822 for (attempts = 1; ; attempts++) { 823 errno = 0; 824 if ((ret = rtmsg(*cmd, flags)) == 0) 825 break; 826 if (errno != ENETUNREACH && errno != ESRCH) 827 break; 828 if (af == AF_INET && *gateway != '\0' && 829 hp != NULL && hp->h_addr_list[1] != NULL) { 830 so_gate_tried = so_gate.sin; 831 hp->h_addr_list++; 832 memmove(&so_gate.sin.sin_addr, 833 hp->h_addr_list[0], 834 MIN((size_t)hp->h_length, 835 sizeof(so_gate.sin.sin_addr))); 836 } else 837 break; 838 } 839 if (*cmd == 'g') 840 exit(0); 841 if (!qflag) { 842 oerrno = errno; 843 printf("%s %s %s", cmd, ishost? "host" : "net", dest); 844 if (*gateway != '\0') { 845 printf(": gateway %s", gateway); 846 if (attempts > 1 && ret == 0 && af == AF_INET) { 847 printf(" (%s)", 848 inet_ntoa(so_gate_tried.sin_addr)); 849 } 850 } 851 if (ret == 0) { 852 printf("\n"); 853 } else { 854 switch (oerrno) { 855 case ESRCH: 856 err_str = "not in table"; 857 break; 858 case EBUSY: 859 err_str = "entry in use"; 860 break; 861 case ENOBUFS: 862 err_str = "routing table overflow"; 863 break; 864 case EDQUOT: /* handle recursion avoidance in 865 rt_setgate() */ 866 err_str = "gateway uses the same route"; 867 break; 868 default: 869 err_str = strerror(oerrno); 870 break; 871 } 872 printf(": %s\n", err_str); 873 } 874 } 875 exit(ret != 0); 876 } 877 878 static void 879 inet_makenetandmask(u_long net, struct sockaddr_in *in, u_long bits) 880 { 881 u_long addr, mask = 0; 882 char *cp; 883 884 rtm_addrs |= RTA_NETMASK; 885 /* 886 * XXX: This approach unable to handle 0.0.0.1/32 correctly 887 * as inet_network() converts 0.0.0.1 and 1 equally. 888 */ 889 if (net <= 0xff) 890 addr = net << IN_CLASSA_NSHIFT; 891 else if (net <= 0xffff) 892 addr = net << IN_CLASSB_NSHIFT; 893 else if (net <= 0xffffff) 894 addr = net << IN_CLASSC_NSHIFT; 895 else 896 addr = net; 897 898 if (bits != 0) 899 mask = 0xffffffff << (32 - bits); 900 else if (net == 0) 901 mask = 0; 902 else if (IN_CLASSA(addr)) 903 mask = IN_CLASSA_NET; 904 else if (IN_CLASSB(addr)) 905 mask = IN_CLASSB_NET; 906 else if (IN_CLASSC(addr)) 907 mask = IN_CLASSC_NET; 908 else if (IN_MULTICAST(addr)) 909 mask = IN_CLASSD_NET; 910 else 911 mask = 0xffffffff; 912 913 in->sin_addr.s_addr = htonl(addr); 914 in = &so_mask.sin; 915 in->sin_addr.s_addr = htonl(mask); 916 in->sin_len = 0; 917 in->sin_family = 0; 918 cp = (char *)(&in->sin_addr + 1); 919 while (*--cp == 0 && cp > (char *)in) 920 ; 921 in->sin_len = 1 + cp - (char *)in; 922 } 923 924 #ifdef INET6 925 /* 926 * XXX the function may need more improvement... 927 */ 928 static int 929 inet6_makenetandmask(struct sockaddr_in6 *sin6, const char *plen) 930 { 931 struct in6_addr in6; 932 933 if (plen == NULL) { 934 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) && 935 sin6->sin6_scope_id == 0) { 936 plen = "0"; 937 } else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) { 938 /* aggregatable global unicast - RFC2374 */ 939 memset(&in6, 0, sizeof(in6)); 940 if (memcmp(&sin6->sin6_addr.s6_addr[8], 941 &in6.s6_addr[8], 8) == 0) 942 plen = "64"; 943 } 944 } 945 946 if (plen == NULL || strcmp(plen, "128") == 0) 947 return(1); 948 rtm_addrs |= RTA_NETMASK; 949 prefixlen(plen); 950 return(0); 951 } 952 #endif 953 954 /* 955 * Interpret an argument as a network address of some kind, 956 * returning 1 if a host address, 0 if a network address. 957 */ 958 static int 959 getaddr(int which, const char *str, struct hostent **hpp) 960 { 961 sup su; 962 struct hostent *hp; 963 struct netent *np; 964 u_long val; 965 char *q; 966 int afamily; /* local copy of af so we can change it */ 967 968 if (af == 0) { 969 af = AF_INET; 970 aflen = sizeof(struct sockaddr_in); 971 } 972 afamily = af; 973 rtm_addrs |= which; 974 switch (which) { 975 case RTA_DST: 976 su = &so_dst; 977 break; 978 case RTA_GATEWAY: 979 su = &so_gate; 980 if (iflag) { 981 struct ifaddrs *ifap, *ifa; 982 struct sockaddr_dl *sdl = NULL; 983 984 if (getifaddrs(&ifap)) 985 err(1, "getifaddrs"); 986 987 for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) { 988 if (ifa->ifa_addr->sa_family != AF_LINK) 989 continue; 990 991 if (strcmp(str, ifa->ifa_name) != 0) 992 continue; 993 994 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 995 } 996 /* If we found it, then use it */ 997 if (sdl != NULL) { 998 /* 999 * Copy is safe since we have a 1000 * sockaddr_storage member in sockunion{}. 1001 * Note that we need to copy before calling 1002 * freeifaddrs(). 1003 * 1004 * Interface routes are routed only by their 1005 * sdl_index or interface name (we provide 1006 * both here), not by the ARP address of the 1007 * local interface (alen, slen = 0). 1008 */ 1009 memcpy(&su->sdl, sdl, sdl->sdl_len); 1010 su->sdl.sdl_alen = 0; 1011 su->sdl.sdl_slen = 0; 1012 } 1013 freeifaddrs(ifap); 1014 if (sdl != NULL) 1015 return(1); 1016 } 1017 break; 1018 case RTA_NETMASK: 1019 su = &so_mask; 1020 break; 1021 case RTA_GENMASK: 1022 su = &so_genmask; 1023 break; 1024 case RTA_IFP: 1025 su = &so_ifp; 1026 afamily = AF_LINK; 1027 break; 1028 case RTA_IFA: 1029 su = &so_ifa; 1030 break; 1031 case RTA_MPLS1: 1032 su = &so_mpls1; 1033 break; 1034 case RTA_MPLS2: 1035 su = &so_mpls2; 1036 break; 1037 case RTA_MPLS3: 1038 su = &so_mpls3; 1039 break; 1040 default: 1041 usage("internal error"); 1042 /*NOTREACHED*/ 1043 } 1044 su->sa.sa_len = aflen; 1045 su->sa.sa_family = afamily; /* cases that don't want it have left 1046 already */ 1047 if (strcmp(str, "default") == 0) { 1048 /* 1049 * Default is net 0.0.0.0/0 1050 */ 1051 switch (which) { 1052 case RTA_DST: 1053 forcenet++; 1054 /* bzero(su, sizeof(*su)); *//* for readability */ 1055 getaddr(RTA_NETMASK, str, 0); 1056 break; 1057 case RTA_NETMASK: 1058 case RTA_GENMASK: 1059 /* bzero(su, sizeof(*su)); *//* for readability */ 1060 break; 1061 } 1062 return(0); 1063 } 1064 switch (afamily) { 1065 #ifdef INET6 1066 case AF_INET6: 1067 { 1068 struct addrinfo hints, *res; 1069 1070 q = NULL; 1071 if (which == RTA_DST && (q = strchr(str, '/')) != NULL) 1072 *q = '\0'; 1073 memset(&hints, 0, sizeof(hints)); 1074 hints.ai_family = afamily; /*AF_INET6*/ 1075 hints.ai_flags = AI_NUMERICHOST; 1076 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1077 if (getaddrinfo(str, "0", &hints, &res) != 0 || 1078 res->ai_family != AF_INET6 || 1079 res->ai_addrlen != sizeof(su->sin6)) { 1080 fprintf(stderr, "%s: bad value\n", str); 1081 exit(1); 1082 } 1083 memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6)); 1084 #ifdef __KAME__ 1085 if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) || 1086 IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) && 1087 su->sin6.sin6_scope_id) { 1088 *(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] = 1089 htons(su->sin6.sin6_scope_id); 1090 su->sin6.sin6_scope_id = 0; 1091 } 1092 #endif 1093 freeaddrinfo(res); 1094 if (q != NULL) 1095 *q++ = '/'; 1096 if (which == RTA_DST) 1097 return(inet6_makenetandmask(&su->sin6, q)); 1098 return(0); 1099 } 1100 #endif /* INET6 */ 1101 1102 case AF_LINK: 1103 link_addr(str, &su->sdl); 1104 return(1); 1105 1106 case PF_ROUTE: 1107 su->sa.sa_len = sizeof(*su); 1108 sockaddr(str, &su->sa); 1109 return(1); 1110 1111 case AF_MPLS: 1112 { 1113 mpls_label_t label; 1114 1115 bzero(su, sizeof(*su)); 1116 su->sa.sa_len = sizeof(*su); 1117 su->sa.sa_family = AF_MPLS; 1118 su->smpls.smpls_op = mplsop; 1119 if (mplsop != MPLSLOP_POP && mplsop != MPLSLOP_POPALL && 1120 *str != '\0') { 1121 if (sscanf(str, "%u", &label) != 1) 1122 errx(EX_NOHOST, "bad address: %s", str); 1123 su->smpls.smpls_label = htonl(label); 1124 } 1125 return(1); 1126 } 1127 1128 case AF_INET: 1129 default: 1130 break; 1131 } 1132 1133 if (hpp == NULL) 1134 hpp = &hp; 1135 *hpp = NULL; 1136 1137 q = strchr(str,'/'); 1138 if (q != NULL && which == RTA_DST) { 1139 *q = '\0'; 1140 if ((val = inet_network(str)) != INADDR_NONE) { 1141 inet_makenetandmask( 1142 val, &su->sin, strtoul(q+1, 0, 0)); 1143 return(0); 1144 } 1145 *q = '/'; 1146 } 1147 if ((which != RTA_DST || forcenet == 0) && 1148 inet_aton(str, &su->sin.sin_addr)) { 1149 val = su->sin.sin_addr.s_addr; 1150 if (which != RTA_DST || 1151 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1152 return(1); 1153 else { 1154 val = ntohl(val); 1155 goto netdone; 1156 } 1157 } 1158 if (which == RTA_DST && forcehost == 0 && 1159 ((val = inet_network(str)) != INADDR_NONE || 1160 ((np = getnetbyname(str)) != NULL && (val = np->n_net) != 0))) { 1161 netdone: 1162 inet_makenetandmask(val, &su->sin, 0); 1163 return(0); 1164 } 1165 hp = gethostbyname(str); 1166 if (hp != NULL) { 1167 *hpp = hp; 1168 su->sin.sin_family = hp->h_addrtype; 1169 memmove((char *)&su->sin.sin_addr, hp->h_addr, 1170 MIN((size_t)hp->h_length, sizeof(su->sin.sin_addr))); 1171 return(1); 1172 } 1173 errx(EX_NOHOST, "bad address: %s", str); 1174 } 1175 1176 static int 1177 prefixlen(const char *len_str) 1178 { 1179 int len = atoi(len_str), q, r; 1180 int max; 1181 char *p; 1182 1183 rtm_addrs |= RTA_NETMASK; 1184 switch (af) { 1185 #ifdef INET6 1186 case AF_INET6: 1187 max = 128; 1188 p = (char *)&so_mask.sin6.sin6_addr; 1189 break; 1190 #endif 1191 case AF_INET: 1192 max = 32; 1193 p = (char *)&so_mask.sin.sin_addr; 1194 break; 1195 default: 1196 fprintf(stderr, "prefixlen not supported in this af\n"); 1197 exit(1); 1198 /*NOTREACHED*/ 1199 } 1200 1201 if (len < 0 || max < len) { 1202 fprintf(stderr, "%s: bad value\n", len_str); 1203 exit(1); 1204 } 1205 1206 q = len >> 3; 1207 r = len & 7; 1208 so_mask.sa.sa_family = af; 1209 so_mask.sa.sa_len = aflen; 1210 memset((void *)p, 0, max / 8); 1211 if (q > 0) 1212 memset((void *)p, 0xff, q); 1213 if (r > 0) 1214 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1215 if (len == max) 1216 return(-1); 1217 else 1218 return(len); 1219 } 1220 1221 static void 1222 interfaces(void) 1223 { 1224 size_t needed; 1225 int mib[6]; 1226 char *buf, *lim, *next; 1227 struct rt_msghdr *rtm; 1228 1229 mib[0] = CTL_NET; 1230 mib[1] = PF_ROUTE; 1231 mib[2] = 0; /* protocol */ 1232 mib[3] = 0; /* wildcard address family */ 1233 mib[4] = NET_RT_IFLIST; 1234 mib[5] = 0; /* no flags */ 1235 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1236 err(EX_OSERR, "route-sysctl-estimate"); 1237 if ((buf = malloc(needed)) == NULL) 1238 errx(EX_OSERR, "malloc failed"); 1239 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1240 err(EX_OSERR, "actual retrieval of interface table"); 1241 lim = buf + needed; 1242 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1243 rtm = (struct rt_msghdr *)next; 1244 print_rtmsg(rtm, rtm->rtm_msglen); 1245 } 1246 } 1247 1248 static void 1249 monitor(void) 1250 { 1251 int n, error; 1252 char msg[2048]; 1253 time_t now; 1254 1255 verbose = 1; 1256 if (debugonly) { 1257 interfaces(); 1258 exit(0); 1259 } 1260 1261 for (;;) { 1262 n = read(s, msg, sizeof(msg)); 1263 error = errno; 1264 now = time(NULL); 1265 if (n == -1) { 1266 printf("\nsocket error %d on %s %s\n", 1267 error, ctime(&now), strerror(errno)); 1268 continue; 1269 } 1270 printf("\ngot message of size %d on %s", n, ctime(&now)); 1271 print_rtmsg((struct rt_msghdr *)msg, n); 1272 } 1273 } 1274 1275 struct { 1276 struct rt_msghdr m_rtm; 1277 char m_space[512]; 1278 } m_rtmsg; 1279 1280 static int 1281 rtmsg(int cmd, int flags) 1282 { 1283 static int seq; 1284 int rlen; 1285 char *cp = m_rtmsg.m_space; 1286 int l; 1287 1288 #define NEXTADDR(w, u) \ 1289 if (rtm_addrs & (w)) {\ 1290 l = RT_ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1291 if (verbose) sodump(&(u),"u");\ 1292 } 1293 1294 errno = 0; 1295 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1296 if (cmd == 'a') 1297 cmd = RTM_ADD; 1298 else if (cmd == 'c') 1299 cmd = RTM_CHANGE; 1300 else if (cmd == 'g') { 1301 cmd = RTM_GET; 1302 if (so_ifp.sa.sa_family == 0) { 1303 so_ifp.sa.sa_family = AF_LINK; 1304 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1305 rtm_addrs |= RTA_IFP; 1306 } 1307 } else 1308 cmd = RTM_DELETE; 1309 #define rtm m_rtmsg.m_rtm 1310 rtm.rtm_type = cmd; 1311 rtm.rtm_flags = flags; 1312 rtm.rtm_version = RTM_VERSION; 1313 rtm.rtm_seq = ++seq; 1314 rtm.rtm_addrs = rtm_addrs; 1315 rtm.rtm_rmx = rt_metrics; 1316 rtm.rtm_inits = rtm_inits; 1317 1318 if (rtm_addrs & RTA_NETMASK) 1319 mask_addr(); 1320 NEXTADDR(RTA_DST, so_dst); 1321 NEXTADDR(RTA_GATEWAY, so_gate); 1322 NEXTADDR(RTA_NETMASK, so_mask); 1323 NEXTADDR(RTA_GENMASK, so_genmask); 1324 NEXTADDR(RTA_IFP, so_ifp); 1325 NEXTADDR(RTA_IFA, so_ifa); 1326 NEXTADDR(RTA_MPLS1, so_mpls1); 1327 NEXTADDR(RTA_MPLS2, so_mpls2); 1328 NEXTADDR(RTA_MPLS3, so_mpls3); 1329 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1330 if (verbose) 1331 print_rtmsg(&rtm, l); 1332 if (debugonly) 1333 return(0); 1334 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1335 warn("writing to routing socket"); 1336 return(-1); 1337 } 1338 if (cmd == RTM_GET) { 1339 do { 1340 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1341 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1342 if (l < 0) 1343 warn("read from routing socket"); 1344 else 1345 print_getmsg(&rtm, l); 1346 } 1347 #undef rtm 1348 return(0); 1349 } 1350 1351 static void 1352 mask_addr(void) 1353 { 1354 int olen = so_mask.sa.sa_len; 1355 char *cp1 = olen + (char *)&so_mask, *cp2; 1356 1357 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1358 if (*--cp1 != 0) { 1359 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1360 break; 1361 } 1362 if ((rtm_addrs & RTA_DST) == 0) 1363 return; 1364 switch (so_dst.sa.sa_family) { 1365 case AF_INET: 1366 #ifdef INET6 1367 case AF_INET6: 1368 #endif 1369 case 0: 1370 return; 1371 } 1372 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1373 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1374 while (cp2 > cp1) 1375 *--cp2 = 0; 1376 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1377 while (cp1 > so_dst.sa.sa_data) 1378 *--cp1 &= *--cp2; 1379 } 1380 1381 const char *msgtypes[] = { 1382 "", 1383 "RTM_ADD: Add Route", 1384 "RTM_DELETE: Delete Route", 1385 "RTM_CHANGE: Change Metrics or flags", 1386 "RTM_GET: Report Metrics", 1387 "RTM_LOSING: Kernel Suspects Partitioning", 1388 "RTM_REDIRECT: Told to use different route", 1389 "RTM_MISS: Lookup failed on this address", 1390 "RTM_LOCK: fix specified metrics", 1391 "0x9: unused", 1392 "0xa: unused", 1393 "RTM_RESOLVE: Route created by cloning", 1394 "RTM_NEWADDR: address being added to iface", 1395 "RTM_DELADDR: address being removed from iface", 1396 "RTM_IFINFO: iface status change", 1397 "RTM_NEWMADDR: new multicast group membership on iface", 1398 "RTM_DELMADDR: multicast group membership removed from iface", 1399 "RTM_IFANNOUNCE: interface arrival/departure", 1400 "RTM_IEEE80211: IEEE80211 wireless event", 1401 0, 1402 }; 1403 1404 char metricnames[] = 1405 "\013iw\012iwmax\011msl\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire" 1406 "\2hopcount\1mtu"; 1407 char routeflags[] = 1408 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1409 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1410 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1411 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1412 char ifnetflags[] = 1413 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1414 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1415 "\017LINK2\020MULTICAST"; 1416 char addrnames[] = 1417 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD" 1418 "\011MPLS1\012MPLS2\013MPLS3"; 1419 1420 static const char * 1421 linkstate(struct if_msghdr *ifm) 1422 { 1423 static char buf[64]; 1424 1425 switch (ifm->ifm_data.ifi_link_state) { 1426 case LINK_STATE_UNKNOWN: 1427 return "carrier: unknown"; 1428 case LINK_STATE_DOWN: 1429 return "carrier: no carrier"; 1430 case LINK_STATE_UP: 1431 return "carrier: active"; 1432 default: 1433 (void)snprintf(buf, sizeof(buf), "carrier: 0x%lx", 1434 ifm->ifm_data.ifi_link_state); 1435 return buf; 1436 } 1437 } 1438 1439 static void 1440 print_rtmsg(struct rt_msghdr *rtm, int msglen __unused) 1441 { 1442 struct if_msghdr *ifm; 1443 struct ifa_msghdr *ifam; 1444 #ifdef RTM_NEWMADDR 1445 struct ifma_msghdr *ifmam; 1446 #endif 1447 struct if_announcemsghdr *ifan; 1448 union { 1449 struct ieee80211_join_event join; 1450 struct ieee80211_leave_event leave; 1451 struct ieee80211_replay_event replay; 1452 struct ieee80211_michael_event michael; 1453 } ev; 1454 size_t evlen = 0; 1455 1456 if (verbose == 0) 1457 return; 1458 if (rtm->rtm_version != RTM_VERSION) { 1459 printf("routing message version %d not understood\n", 1460 rtm->rtm_version); 1461 return; 1462 } 1463 if (msgtypes[rtm->rtm_type] != NULL) 1464 printf("%s: ", msgtypes[rtm->rtm_type]); 1465 else 1466 printf("#%d: ", rtm->rtm_type); 1467 printf("len %d, ", rtm->rtm_msglen); 1468 switch (rtm->rtm_type) { 1469 case RTM_IFINFO: 1470 ifm = (struct if_msghdr *)rtm; 1471 printf("if# %d, %s, flags:", ifm->ifm_index, linkstate(ifm)); 1472 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1473 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1474 break; 1475 case RTM_NEWADDR: 1476 case RTM_DELADDR: 1477 ifam = (struct ifa_msghdr *)rtm; 1478 printf("metric %d, flags:", ifam->ifam_metric); 1479 bprintf(stdout, ifam->ifam_flags, routeflags); 1480 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1481 break; 1482 #ifdef RTM_NEWMADDR 1483 case RTM_NEWMADDR: 1484 case RTM_DELMADDR: 1485 ifmam = (struct ifma_msghdr *)rtm; 1486 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1487 break; 1488 #endif 1489 case RTM_IEEE80211: 1490 ifan = (struct if_announcemsghdr *)rtm; 1491 (void)printf("if# %d, what: ", ifan->ifan_index); 1492 switch (ifan->ifan_what) { 1493 case RTM_IEEE80211_ASSOC: 1494 printf("associate"); 1495 break; 1496 case RTM_IEEE80211_REASSOC: 1497 printf("re-associate"); 1498 break; 1499 case RTM_IEEE80211_DISASSOC: 1500 printf("disassociate"); 1501 break; 1502 case RTM_IEEE80211_SCAN: 1503 printf("scan complete"); 1504 break; 1505 case RTM_IEEE80211_JOIN: 1506 evlen = sizeof(ev.join); 1507 printf("join"); 1508 break; 1509 case RTM_IEEE80211_LEAVE: 1510 evlen = sizeof(ev.leave); 1511 printf("leave"); 1512 break; 1513 case RTM_IEEE80211_MICHAEL: 1514 evlen = sizeof(ev.michael); 1515 printf("michael"); 1516 break; 1517 case RTM_IEEE80211_REPLAY: 1518 evlen = sizeof(ev.replay); 1519 printf("replay"); 1520 break; 1521 default: 1522 evlen = 0; 1523 printf("#%d", ifan->ifan_what); 1524 break; 1525 } 1526 if (sizeof(*ifan) + evlen > ifan->ifan_msglen) { 1527 printf(" (truncated)\n"); 1528 break; 1529 } 1530 (void)memcpy(&ev, (ifan + 1), evlen); 1531 switch (ifan->ifan_what) { 1532 case RTM_IEEE80211_JOIN: 1533 case RTM_IEEE80211_LEAVE: 1534 printf(" mac %" PRIETHER, 1535 PRIETHER_ARGS(ev.join.iev_addr)); 1536 break; 1537 case RTM_IEEE80211_REPLAY: 1538 case RTM_IEEE80211_MICHAEL: 1539 printf(" src %" PRIETHER " dst %" PRIETHER 1540 " cipher %" PRIu8 " keyix %" PRIu8, 1541 PRIETHER_ARGS(ev.replay.iev_src), 1542 PRIETHER_ARGS(ev.replay.iev_dst), 1543 ev.replay.iev_cipher, 1544 ev.replay.iev_keyix); 1545 if (ifan->ifan_what == RTM_IEEE80211_REPLAY) { 1546 printf(" key rsc %#" PRIx64 1547 " frame rsc %#" PRIx64, 1548 ev.replay.iev_keyrsc, ev.replay.iev_rsc); 1549 } 1550 break; 1551 default: 1552 break; 1553 } 1554 printf("\n"); 1555 break; 1556 case RTM_IFANNOUNCE: 1557 ifan = (struct if_announcemsghdr *)rtm; 1558 printf("if# %d, what: ", ifan->ifan_index); 1559 switch (ifan->ifan_what) { 1560 case IFAN_ARRIVAL: 1561 printf("arrival"); 1562 break; 1563 case IFAN_DEPARTURE: 1564 printf("departure"); 1565 break; 1566 default: 1567 printf("#%d", ifan->ifan_what); 1568 break; 1569 } 1570 printf("\n"); 1571 break; 1572 1573 case RTM_ADD: 1574 case RTM_DELETE: 1575 case RTM_GET: 1576 printf("pid: %ld, seq %d, errno %d, flags:", 1577 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1578 bprintf(stdout, rtm->rtm_flags, routeflags); 1579 pmsg_common(rtm); 1580 break; 1581 } 1582 } 1583 1584 static void 1585 print_getmsg(struct rt_msghdr *rtm, int msglen) 1586 { 1587 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1588 struct sockaddr_dl *ifp = NULL; 1589 struct sockaddr *sa; 1590 char *cp; 1591 int i; 1592 1593 printf(" route to: %s\n", routename(&so_dst.sa)); 1594 if (rtm->rtm_version != RTM_VERSION) { 1595 warnx("routing message version %d not understood", 1596 rtm->rtm_version); 1597 return; 1598 } 1599 if (rtm->rtm_msglen > msglen) { 1600 warnx("message length mismatch, in packet %d, returned %d", 1601 rtm->rtm_msglen, msglen); 1602 } 1603 if (rtm->rtm_errno != 0) { 1604 errno = rtm->rtm_errno; 1605 warn("message indicates error %d", errno); 1606 return; 1607 } 1608 cp = ((char *)(rtm + 1)); 1609 if (rtm->rtm_addrs) 1610 for (i = 1; i != 0; i <<= 1) 1611 if (i & rtm->rtm_addrs) { 1612 sa = (struct sockaddr *)cp; 1613 switch (i) { 1614 case RTA_DST: 1615 dst = sa; 1616 break; 1617 case RTA_GATEWAY: 1618 gate = sa; 1619 break; 1620 case RTA_NETMASK: 1621 mask = sa; 1622 break; 1623 case RTA_IFP: 1624 if (sa->sa_family == AF_LINK && 1625 ((struct sockaddr_dl *)sa)->sdl_nlen) 1626 ifp = (struct sockaddr_dl *)sa; 1627 break; 1628 } 1629 RT_ADVANCE(cp, sa); 1630 } 1631 if (dst != NULL && mask != NULL) 1632 mask->sa_family = dst->sa_family; /* XXX */ 1633 if (dst != NULL) 1634 printf("destination: %s\n", routename(dst)); 1635 if (mask != NULL) { 1636 int savenflag = nflag; 1637 1638 nflag = 1; 1639 printf(" mask: %s\n", routename(mask)); 1640 nflag = savenflag; 1641 } 1642 if (gate != NULL && rtm->rtm_flags & RTF_GATEWAY) 1643 printf(" gateway: %s\n", routename(gate)); 1644 if (ifp != NULL) 1645 printf(" interface: %.*s\n", 1646 ifp->sdl_nlen, ifp->sdl_data); 1647 printf(" flags: "); 1648 bprintf(stdout, rtm->rtm_flags, routeflags); 1649 1650 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1651 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1652 1653 printf("\n%s\n", "\ 1654 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire msl,msec iwmax iw"); 1655 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1656 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1657 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1658 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1659 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1660 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1661 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1662 if (rtm->rtm_rmx.rmx_expire != 0) { 1663 struct timespec sp; 1664 clock_gettime(CLOCK_MONOTONIC, &sp); 1665 rtm->rtm_rmx.rmx_expire -= sp.tv_sec; 1666 } 1667 printf("%8ld%c ", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1668 printf("%8ld ", rtm->rtm_rmx.rmx_msl); 1669 printf("%5ld ", rtm->rtm_rmx.rmx_iwmaxsegs); 1670 printf("%3ld\n", rtm->rtm_rmx.rmx_iwcapsegs); 1671 #undef lock 1672 #undef msec 1673 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1674 if (verbose) 1675 pmsg_common(rtm); 1676 else if (rtm->rtm_addrs &~ RTA_IGN) { 1677 printf("sockaddrs: "); 1678 bprintf(stdout, rtm->rtm_addrs, addrnames); 1679 putchar('\n'); 1680 } 1681 #undef RTA_IGN 1682 } 1683 1684 static void 1685 pmsg_common(struct rt_msghdr *rtm) 1686 { 1687 printf("\nlocks: "); 1688 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1689 printf(" inits: "); 1690 bprintf(stdout, rtm->rtm_inits, metricnames); 1691 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1692 } 1693 1694 static void 1695 pmsg_addrs(char *cp, int addrs) 1696 { 1697 struct sockaddr *sa; 1698 int i; 1699 1700 if (addrs == 0) { 1701 putchar('\n'); 1702 return; 1703 } 1704 printf("\nsockaddrs: "); 1705 bprintf(stdout, addrs, addrnames); 1706 putchar('\n'); 1707 for (i = 1; i != 0; i <<= 1) 1708 if (i & addrs) { 1709 sa = (struct sockaddr *)cp; 1710 printf(" %s", routename(sa)); 1711 RT_ADVANCE(cp, sa); 1712 } 1713 putchar('\n'); 1714 fflush(stdout); 1715 } 1716 1717 static void 1718 bprintf(FILE *fp, int b, u_char *str) 1719 { 1720 int i; 1721 int gotsome = 0; 1722 1723 if (b == 0) 1724 return; 1725 while ((i = *str++) != 0) { 1726 if (b & (1 << (i-1))) { 1727 if (!gotsome) 1728 i = '<'; 1729 else 1730 i = ','; 1731 putc(i, fp); 1732 gotsome = 1; 1733 for (; (i = *str) > 32; str++) 1734 putc(i, fp); 1735 } else 1736 while (*str > 32) 1737 str++; 1738 } 1739 if (gotsome) 1740 putc('>', fp); 1741 } 1742 1743 int 1744 keyword(const char *cp) 1745 { 1746 const struct keytab *kt = keywords; 1747 1748 while (kt->kt_cp != NULL && strcmp(kt->kt_cp, cp) != 0) 1749 kt++; 1750 return(kt->kt_i); 1751 } 1752 1753 static void 1754 sodump(sup su, const char *which) 1755 { 1756 switch (su->sa.sa_family) { 1757 case AF_LINK: 1758 printf("%s: link %s; ", 1759 which, link_ntoa(&su->sdl)); 1760 break; 1761 case AF_INET: 1762 printf("%s: inet %s; ", 1763 which, inet_ntoa(su->sin.sin_addr)); 1764 break; 1765 } 1766 fflush(stdout); 1767 } 1768 1769 /* States*/ 1770 #define VIRGIN 0 1771 #define GOTONE 1 1772 #define GOTTWO 2 1773 /* Inputs */ 1774 #define DIGIT (4*0) 1775 #define END (4*1) 1776 #define DELIM (4*2) 1777 1778 static void 1779 sockaddr(const char *addr, struct sockaddr *sa) 1780 { 1781 char *cp = (char *)sa; 1782 int size = sa->sa_len; 1783 char *cplim = cp + size; 1784 int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1785 1786 memset(cp, 0, size); 1787 cp++; 1788 do { 1789 if ((*addr >= '0') && (*addr <= '9')) { 1790 new = *addr - '0'; 1791 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1792 new = *addr - 'a' + 10; 1793 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1794 new = *addr - 'A' + 10; 1795 } else if (*addr == '\0') 1796 state |= END; 1797 else 1798 state |= DELIM; 1799 addr++; 1800 switch (state /* | INPUT */) { 1801 case GOTTWO | DIGIT: 1802 *cp++ = byte; /*FALLTHROUGH*/ 1803 case VIRGIN | DIGIT: 1804 state = GOTONE; byte = new; continue; 1805 case GOTONE | DIGIT: 1806 state = GOTTWO; byte = new + (byte << 4); continue; 1807 default: /* | DELIM */ 1808 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1809 case GOTONE | END: 1810 case GOTTWO | END: 1811 *cp++ = byte; /* FALLTHROUGH */ 1812 case VIRGIN | END: 1813 break; 1814 } 1815 break; 1816 } while (cp < cplim); 1817 sa->sa_len = cp - (char *)sa; 1818 } 1819