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