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 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1983, 1989, 1991, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)route.c 8.3 (Berkeley) 3/19/94"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 #include <sys/param.h> 49 #include <sys/file.h> 50 #include <sys/socket.h> 51 #include <sys/ioctl.h> 52 #include <sys/sysctl.h> 53 #include <sys/types.h> 54 55 #include <net/if.h> 56 #include <net/route.h> 57 #include <net/if_dl.h> 58 #include <netinet/in.h> 59 #include <netatalk/at.h> 60 #ifdef NS 61 #include <netns/ns.h> 62 #endif 63 #include <arpa/inet.h> 64 #include <netdb.h> 65 66 #include <ctype.h> 67 #include <err.h> 68 #include <errno.h> 69 #include <stdio.h> 70 #include <stdlib.h> 71 #include <string.h> 72 #include <sysexits.h> 73 #include <unistd.h> 74 75 struct keytab { 76 char *kt_cp; 77 int kt_i; 78 } keywords[] = { 79 #include "keywords.h" 80 {0, 0} 81 }; 82 83 struct ortentry route; 84 union sockunion { 85 struct sockaddr sa; 86 struct sockaddr_in sin; 87 #ifdef INET6 88 struct sockaddr_in6 sin6; 89 #endif 90 struct sockaddr_at sat; 91 #ifdef NS 92 struct sockaddr_ns sns; 93 #endif 94 struct sockaddr_dl sdl; 95 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 96 97 typedef union sockunion *sup; 98 int pid, rtm_addrs, uid; 99 int s; 100 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 101 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 102 int locking, lockrest, debugonly; 103 struct rt_metrics rt_metrics; 104 u_long rtm_inits; 105 int atalk_aton __P((const char *, struct at_addr *)); 106 char *atalk_ntoa __P((struct at_addr)); 107 char *routename(), *netname(); 108 void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 109 void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 110 int getaddr(), rtmsg(), x25_makemask(); 111 int prefixlen(); 112 extern char *iso_ntoa(); 113 114 void usage __P((const char *)) __dead2; 115 116 #ifdef INET6 117 char ntop_buf[INET6_ADDRSTRLEN]; /*for inet_ntop()*/ 118 #endif 119 120 void 121 usage(cp) 122 const char *cp; 123 { 124 if (cp) 125 warnx("bad keyword: %s", cp); 126 (void) fprintf(stderr, 127 "usage: route [-dnqtv] command [[modifiers] args]\n"); 128 exit(EX_USAGE); 129 /* NOTREACHED */ 130 } 131 132 #define ROUNDUP(a) \ 133 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 134 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 135 136 int 137 main(argc, argv) 138 int argc; 139 char **argv; 140 { 141 int ch; 142 143 if (argc < 2) 144 usage((char *)NULL); 145 146 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 147 switch(ch) { 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((char *)NULL); 166 } 167 argc -= optind; 168 argv += optind; 169 170 pid = getpid(); 171 uid = getuid(); 172 if (tflag) 173 s = open("/dev/null", O_WRONLY, 0); 174 else 175 s = socket(PF_ROUTE, SOCK_RAW, 0); 176 if (s < 0) 177 err(EX_OSERR, "socket"); 178 setuid(uid); 179 if (*argv) 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 exit(0); 190 /* NOTREACHED */ 191 192 case K_MONITOR: 193 monitor(); 194 /* NOTREACHED */ 195 196 case K_FLUSH: 197 flushroutes(argc, argv); 198 exit(0); 199 /* NOTREACHED */ 200 } 201 usage(*argv); 202 /* NOTREACHED */ 203 } 204 205 /* 206 * Purge all entries in the routing tables not 207 * associated with network interfaces. 208 */ 209 void 210 flushroutes(argc, argv) 211 int argc; 212 char *argv[]; 213 { 214 size_t needed; 215 int mib[6], rlen, seqno; 216 char *buf, *next, *lim; 217 register struct rt_msghdr *rtm; 218 219 if (uid) { 220 errx(EX_NOPERM, "must be root to alter routing table"); 221 } 222 shutdown(s, 0); /* Don't want to read back our messages */ 223 if (argc > 1) { 224 argv++; 225 if (argc == 2 && **argv == '-') 226 switch (keyword(*argv + 1)) { 227 case K_INET: 228 af = AF_INET; 229 break; 230 #ifdef INET6 231 case K_INET6: 232 af = AF_INET6; 233 break; 234 #endif 235 case K_ATALK: 236 af = AF_APPLETALK; 237 break; 238 #ifdef NS 239 case K_XNS: 240 af = AF_NS; 241 break; 242 #endif 243 case K_LINK: 244 af = AF_LINK; 245 break; 246 default: 247 goto bad; 248 } else 249 bad: usage(*argv); 250 } 251 mib[0] = CTL_NET; 252 mib[1] = PF_ROUTE; 253 mib[2] = 0; /* protocol */ 254 mib[3] = 0; /* wildcard address family */ 255 mib[4] = NET_RT_DUMP; 256 mib[5] = 0; /* no flags */ 257 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 258 err(EX_OSERR, "route-sysctl-estimate"); 259 if ((buf = malloc(needed)) == NULL) 260 errx(EX_OSERR, "malloc failed"); 261 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 262 err(EX_OSERR, "route-sysctl-get"); 263 lim = buf + needed; 264 if (verbose) 265 (void) printf("Examining routing table from sysctl\n"); 266 seqno = 0; /* ??? */ 267 for (next = buf; next < lim; next += rtm->rtm_msglen) { 268 rtm = (struct rt_msghdr *)next; 269 if (verbose) 270 print_rtmsg(rtm, rtm->rtm_msglen); 271 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 272 continue; 273 if (af) { 274 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 275 276 if (sa->sa_family != af) 277 continue; 278 } 279 if (debugonly) 280 continue; 281 rtm->rtm_type = RTM_DELETE; 282 rtm->rtm_seq = seqno; 283 rlen = write(s, next, rtm->rtm_msglen); 284 if (rlen < (int)rtm->rtm_msglen) { 285 warn("write to routing socket"); 286 (void) printf("got only %d for rlen\n", rlen); 287 break; 288 } 289 seqno++; 290 if (qflag) 291 continue; 292 if (verbose) 293 print_rtmsg(rtm, rlen); 294 else { 295 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 296 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 297 routename(sa) : netname(sa)); 298 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 299 (void) printf("%-20.20s ", routename(sa)); 300 (void) printf("done\n"); 301 } 302 } 303 } 304 305 char * 306 routename(sa) 307 struct sockaddr *sa; 308 { 309 register char *cp; 310 static char line[MAXHOSTNAMELEN + 1]; 311 struct hostent *hp; 312 static char domain[MAXHOSTNAMELEN + 1]; 313 static int first = 1; 314 #ifdef NS 315 char *ns_print(); 316 #endif 317 318 if (first) { 319 first = 0; 320 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 321 (cp = index(domain, '.'))) { 322 domain[MAXHOSTNAMELEN] = '\0'; 323 (void) strcpy(domain, cp + 1); 324 } else 325 domain[0] = 0; 326 } 327 328 if (sa->sa_len == 0) 329 strcpy(line, "default"); 330 else switch (sa->sa_family) { 331 332 case AF_INET: 333 { struct in_addr in; 334 in = ((struct sockaddr_in *)sa)->sin_addr; 335 336 cp = 0; 337 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 338 cp = "default"; 339 if (cp == 0 && !nflag) { 340 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 341 AF_INET); 342 if (hp) { 343 if ((cp = index(hp->h_name, '.')) && 344 !strcmp(cp + 1, domain)) 345 *cp = 0; 346 cp = hp->h_name; 347 } 348 } 349 if (cp) { 350 strncpy(line, cp, sizeof(line) - 1); 351 line[sizeof(line) - 1] = '\0'; 352 } else { 353 /* XXX - why not inet_ntoa()? */ 354 #define C(x) (unsigned)((x) & 0xff) 355 in.s_addr = ntohl(in.s_addr); 356 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 357 C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr)); 358 } 359 break; 360 } 361 362 #ifdef INET6 363 case AF_INET6: 364 { struct sockaddr_in6 *sin6; 365 int gap; 366 367 sin6 = (struct sockaddr_in6 *)sa; 368 gap = sizeof(struct sockaddr_in6) - sin6->sin6_len; 369 if (gap > 0) 370 bzero((char *)(sin6) + sin6->sin6_len, gap); 371 (void) snprintf(line, sizeof(line), "%s", 372 inet_ntop(AF_INET6, &sin6->sin6_addr, 373 ntop_buf, sizeof(ntop_buf))); 374 } 375 #endif 376 377 case AF_APPLETALK: 378 (void) snprintf(line, sizeof(line), "atalk %s", 379 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 380 break; 381 382 #ifdef NS 383 case AF_NS: 384 return (ns_print((struct sockaddr_ns *)sa)); 385 #endif 386 387 case AF_LINK: 388 return (link_ntoa((struct sockaddr_dl *)sa)); 389 390 default: 391 { u_short *s = (u_short *)sa; 392 u_short *slim = s + ((sa->sa_len + 1) >> 1); 393 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 394 char *cpe = line + sizeof(line); 395 396 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 397 cp += snprintf(cp, cpe - cp, " %x", *s); 398 break; 399 } 400 } 401 return (line); 402 } 403 404 /* 405 * Return the name of the network whose address is given. 406 * The address is assumed to be that of a net or subnet, not a host. 407 */ 408 char * 409 netname(sa) 410 struct sockaddr *sa; 411 { 412 char *cp = 0; 413 static char line[MAXHOSTNAMELEN + 1]; 414 struct netent *np = 0; 415 u_long net, mask; 416 register u_long i; 417 int subnetshift; 418 #ifdef NS 419 char *ns_print(); 420 #endif 421 422 switch (sa->sa_family) { 423 424 case AF_INET: 425 { struct in_addr in; 426 in = ((struct sockaddr_in *)sa)->sin_addr; 427 428 i = in.s_addr = ntohl(in.s_addr); 429 if (in.s_addr == 0) 430 cp = "default"; 431 else if (!nflag) { 432 if (IN_CLASSA(i)) { 433 mask = IN_CLASSA_NET; 434 subnetshift = 8; 435 } else if (IN_CLASSB(i)) { 436 mask = IN_CLASSB_NET; 437 subnetshift = 8; 438 } else { 439 mask = IN_CLASSC_NET; 440 subnetshift = 4; 441 } 442 /* 443 * If there are more bits than the standard mask 444 * would suggest, subnets must be in use. 445 * Guess at the subnet mask, assuming reasonable 446 * width subnet fields. 447 */ 448 while (in.s_addr &~ mask) 449 mask = (long)mask >> subnetshift; 450 net = in.s_addr & mask; 451 while ((mask & 1) == 0) 452 mask >>= 1, net >>= 1; 453 np = getnetbyaddr(net, AF_INET); 454 if (np) 455 cp = np->n_name; 456 } 457 if (cp) 458 strncpy(line, cp, sizeof(line)); 459 else if ((in.s_addr & 0xffffff) == 0) 460 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 461 else if ((in.s_addr & 0xffff) == 0) 462 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 463 C(in.s_addr >> 16)); 464 else if ((in.s_addr & 0xff) == 0) 465 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 466 C(in.s_addr >> 16), C(in.s_addr >> 8)); 467 else 468 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 469 C(in.s_addr >> 16), C(in.s_addr >> 8), 470 C(in.s_addr)); 471 break; 472 } 473 474 #ifdef INET6 475 case AF_INET6: 476 { struct in6_addr in6; 477 int gap; 478 479 in6 = ((struct sockaddr_in6 *)sa)->sin6_addr; 480 gap = sizeof(struct sockaddr_in6) - sa->sa_len; 481 if (gap > 0) 482 bzero((char *)(&in6 + 1) - gap, gap); 483 (void)snprintf(line, sizeof(line), "%s", 484 inet_ntop(AF_INET6, &in6, ntop_buf, 485 sizeof(ntop_buf))); 486 } 487 #endif 488 489 case AF_APPLETALK: 490 (void) snprintf(line, sizeof(line), "atalk %s", 491 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 492 break; 493 494 #ifdef NS 495 case AF_NS: 496 return (ns_print((struct sockaddr_ns *)sa)); 497 break; 498 #endif 499 500 case AF_LINK: 501 return (link_ntoa((struct sockaddr_dl *)sa)); 502 503 504 default: 505 { u_short *s = (u_short *)sa->sa_data; 506 u_short *slim = s + ((sa->sa_len + 1)>>1); 507 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 508 char *cpe = line + sizeof(line); 509 510 while (s < slim && cp < cpe) 511 cp += snprintf(cp, cpe - cp, " %x", *s++); 512 break; 513 } 514 } 515 return (line); 516 } 517 518 void 519 set_metric(value, key) 520 char *value; 521 int key; 522 { 523 int flag = 0; 524 u_long noval, *valp = &noval; 525 526 switch (key) { 527 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 528 caseof(K_MTU, RTV_MTU, rmx_mtu); 529 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 530 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 531 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 532 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 533 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 534 caseof(K_RTT, RTV_RTT, rmx_rtt); 535 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 536 } 537 rtm_inits |= flag; 538 if (lockrest || locking) 539 rt_metrics.rmx_locks |= flag; 540 if (locking) 541 locking = 0; 542 *valp = atoi(value); 543 } 544 545 void 546 newroute(argc, argv) 547 int argc; 548 register char **argv; 549 { 550 char *cmd, *dest = "", *gateway = "", *err; 551 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 552 int key; 553 struct hostent *hp = 0; 554 555 if (uid) { 556 errx(EX_NOPERM, "must be root to alter routing table"); 557 } 558 cmd = argv[0]; 559 if (*cmd != 'g') 560 shutdown(s, 0); /* Don't want to read back our messages */ 561 while (--argc > 0) { 562 if (**(++argv)== '-') { 563 switch (key = keyword(1 + *argv)) { 564 case K_LINK: 565 af = AF_LINK; 566 aflen = sizeof(struct sockaddr_dl); 567 break; 568 case K_INET: 569 af = AF_INET; 570 aflen = sizeof(struct sockaddr_in); 571 break; 572 #ifdef INET6 573 case K_INET6: 574 af = AF_INET6; 575 aflen = sizeof(struct sockaddr_in6); 576 if (prefixlen("64") != 64) { 577 fprintf(stderr, "internal error: " 578 "setting prefixlen=64\n"); 579 exit(1); 580 } 581 forcenet = 0; 582 ishost = 1; 583 break; 584 #endif 585 case K_ATALK: 586 af = AF_APPLETALK; 587 aflen = sizeof(struct sockaddr_at); 588 break; 589 case K_SA: 590 af = PF_ROUTE; 591 aflen = sizeof(union sockunion); 592 break; 593 #ifdef NS 594 case K_XNS: 595 af = AF_NS; 596 aflen = sizeof(struct sockaddr_ns); 597 break; 598 #endif 599 case K_IFACE: 600 case K_INTERFACE: 601 iflag++; 602 break; 603 case K_NOSTATIC: 604 flags &= ~RTF_STATIC; 605 break; 606 case K_LLINFO: 607 flags |= RTF_LLINFO; 608 break; 609 case K_LOCK: 610 locking = 1; 611 break; 612 case K_LOCKREST: 613 lockrest = 1; 614 break; 615 case K_HOST: 616 forcehost++; 617 break; 618 case K_REJECT: 619 flags |= RTF_REJECT; 620 break; 621 case K_BLACKHOLE: 622 flags |= RTF_BLACKHOLE; 623 break; 624 case K_PROTO1: 625 flags |= RTF_PROTO1; 626 break; 627 case K_PROTO2: 628 flags |= RTF_PROTO2; 629 break; 630 case K_CLONING: 631 flags |= RTF_CLONING; 632 break; 633 case K_XRESOLVE: 634 flags |= RTF_XRESOLVE; 635 break; 636 case K_STATIC: 637 flags |= RTF_STATIC; 638 break; 639 case K_IFA: 640 if (!--argc) 641 usage((char *)NULL); 642 (void) getaddr(RTA_IFA, *++argv, 0); 643 break; 644 case K_IFP: 645 if (!--argc) 646 usage((char *)NULL); 647 (void) getaddr(RTA_IFP, *++argv, 0); 648 break; 649 case K_GENMASK: 650 if (!--argc) 651 usage((char *)NULL); 652 (void) getaddr(RTA_GENMASK, *++argv, 0); 653 break; 654 case K_GATEWAY: 655 if (!--argc) 656 usage((char *)NULL); 657 (void) getaddr(RTA_GATEWAY, *++argv, 0); 658 break; 659 case K_DST: 660 if (!--argc) 661 usage((char *)NULL); 662 ishost = getaddr(RTA_DST, *++argv, &hp); 663 dest = *argv; 664 break; 665 case K_NETMASK: 666 if (!--argc) 667 usage((char *)NULL); 668 (void) getaddr(RTA_NETMASK, *++argv, 0); 669 /* FALLTHROUGH */ 670 case K_NET: 671 forcenet++; 672 break; 673 case K_PREFIXLEN: 674 if (!--argc) 675 usage((char *)NULL); 676 if (prefixlen(*++argv) == -1) { 677 forcenet = 0; 678 ishost = 1; 679 } else { 680 forcenet = 1; 681 ishost = 0; 682 } 683 break; 684 case K_MTU: 685 case K_HOPCOUNT: 686 case K_EXPIRE: 687 case K_RECVPIPE: 688 case K_SENDPIPE: 689 case K_SSTHRESH: 690 case K_RTT: 691 case K_RTTVAR: 692 if (!--argc) 693 usage((char *)NULL); 694 set_metric(*++argv, key); 695 break; 696 default: 697 usage(1+*argv); 698 } 699 } else { 700 if ((rtm_addrs & RTA_DST) == 0) { 701 dest = *argv; 702 ishost = getaddr(RTA_DST, *argv, &hp); 703 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 704 gateway = *argv; 705 (void) getaddr(RTA_GATEWAY, *argv, &hp); 706 } else { 707 (void) getaddr(RTA_NETMASK, *argv, 0); 708 } 709 } 710 } 711 if (forcehost) { 712 ishost = 1; 713 #ifdef INET6 714 if (af == AF_INET6) { 715 rtm_addrs &= ~RTA_NETMASK; 716 memset((void *)&so_mask, 0, sizeof(so_mask)); 717 } 718 #endif 719 } 720 if (forcenet) 721 ishost = 0; 722 flags |= RTF_UP; 723 if (ishost) 724 flags |= RTF_HOST; 725 if (iflag == 0) 726 flags |= RTF_GATEWAY; 727 for (attempts = 1; ; attempts++) { 728 errno = 0; 729 if ((ret = rtmsg(*cmd, flags)) == 0) 730 break; 731 if (errno != ENETUNREACH && errno != ESRCH) 732 break; 733 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 734 hp->h_addr_list++; 735 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr, 736 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 737 } else 738 break; 739 } 740 if (*cmd == 'g') 741 exit(0); 742 oerrno = errno; 743 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 744 if (*gateway) { 745 (void) printf(": gateway %s", gateway); 746 if (attempts > 1 && ret == 0 && af == AF_INET) 747 (void) printf(" (%s)", 748 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 749 } 750 if (ret == 0) 751 (void) printf("\n"); 752 else { 753 switch (oerrno) { 754 case ESRCH: 755 err = "not in table"; 756 break; 757 case EBUSY: 758 err = "entry in use"; 759 break; 760 case ENOBUFS: 761 err = "routing table overflow"; 762 break; 763 default: 764 err = strerror(oerrno); 765 break; 766 } 767 (void) printf(": %s\n", err); 768 } 769 } 770 771 void 772 inet_makenetandmask(net, sin, bits) 773 u_long net, bits; 774 register struct sockaddr_in *sin; 775 { 776 u_long addr, mask = 0; 777 register char *cp; 778 779 rtm_addrs |= RTA_NETMASK; 780 if (net == 0) 781 mask = addr = 0; 782 else if (bits) { 783 addr = net; 784 mask = 0xffffffff << (32 - bits); 785 } else if (net < 128) { 786 addr = net << IN_CLASSA_NSHIFT; 787 mask = IN_CLASSA_NET; 788 } else if (net < 65536) { 789 addr = net << IN_CLASSB_NSHIFT; 790 mask = IN_CLASSB_NET; 791 } else if (net < 16777216L) { 792 addr = net << IN_CLASSC_NSHIFT; 793 mask = IN_CLASSC_NET; 794 } else { 795 addr = net; 796 if ((addr & IN_CLASSA_HOST) == 0) 797 mask = IN_CLASSA_NET; 798 else if ((addr & IN_CLASSB_HOST) == 0) 799 mask = IN_CLASSB_NET; 800 else if ((addr & IN_CLASSC_HOST) == 0) 801 mask = IN_CLASSC_NET; 802 else 803 mask = -1; 804 } 805 sin->sin_addr.s_addr = htonl(addr); 806 sin = &so_mask.sin; 807 sin->sin_addr.s_addr = htonl(mask); 808 sin->sin_len = 0; 809 sin->sin_family = 0; 810 cp = (char *)(&sin->sin_addr + 1); 811 while (*--cp == 0 && cp > (char *)sin) 812 ; 813 sin->sin_len = 1 + cp - (char *)sin; 814 } 815 816 /* 817 * Interpret an argument as a network address of some kind, 818 * returning 1 if a host address, 0 if a network address. 819 */ 820 int 821 getaddr(which, s, hpp) 822 int which; 823 char *s; 824 struct hostent **hpp; 825 { 826 register sup su; 827 struct hostent *hp; 828 struct netent *np; 829 u_long val; 830 char *q,qs; 831 int afamily; /* local copy of af so we can change it */ 832 833 if (af == 0) { 834 af = AF_INET; 835 aflen = sizeof(struct sockaddr_in); 836 } 837 afamily = af; 838 rtm_addrs |= which; 839 switch (which) { 840 case RTA_DST: 841 su = &so_dst; 842 break; 843 case RTA_GATEWAY: 844 su = &so_gate; 845 if (iflag) { 846 #define MAX_IFACES 400 847 int sock; 848 struct ifreq iflist[MAX_IFACES]; 849 struct ifconf ifconf; 850 struct ifreq *ifr, *ifr_end; 851 struct sockaddr_dl *dl, *sdl = NULL; 852 853 /* Get socket */ 854 if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0) 855 err(1, "socket"); 856 857 /* Get interface list */ 858 ifconf.ifc_req = iflist; 859 ifconf.ifc_len = sizeof(iflist); 860 if (ioctl(sock, SIOCGIFCONF, &ifconf) < 0) 861 err(1, "ioctl(SIOCGIFCONF)"); 862 close(sock); 863 864 /* Look for this interface in the list */ 865 for (ifr = ifconf.ifc_req, 866 ifr_end = (struct ifreq *) 867 (ifconf.ifc_buf + ifconf.ifc_len); 868 ifr < ifr_end; 869 ifr = (struct ifreq *) ((char *) &ifr->ifr_addr 870 + MAX(ifr->ifr_addr.sa_len, 871 sizeof(ifr->ifr_addr)))) { 872 dl = (struct sockaddr_dl *)&ifr->ifr_addr; 873 if (ifr->ifr_addr.sa_family == AF_LINK 874 && (ifr->ifr_flags & IFF_POINTOPOINT) 875 && !strncmp(s, dl->sdl_data, dl->sdl_nlen) 876 && s[dl->sdl_nlen] == 0) { 877 sdl = dl; 878 break; 879 } 880 } 881 882 /* If we found it, then use it */ 883 if (sdl) { 884 su->sdl = *sdl; 885 return(1); 886 } 887 } 888 break; 889 case RTA_NETMASK: 890 su = &so_mask; 891 break; 892 case RTA_GENMASK: 893 su = &so_genmask; 894 break; 895 case RTA_IFP: 896 su = &so_ifp; 897 afamily = AF_LINK; 898 break; 899 case RTA_IFA: 900 su = &so_ifa; 901 break; 902 default: 903 usage("internal error"); 904 /*NOTREACHED*/ 905 } 906 su->sa.sa_len = aflen; 907 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 908 if (strcmp(s, "default") == 0) { 909 /* 910 * Default is net 0.0.0.0/0 911 */ 912 switch (which) { 913 case RTA_DST: 914 forcenet++; 915 /* bzero(su, sizeof(*su)); *//* for readability */ 916 (void) getaddr(RTA_NETMASK, s, 0); 917 break; 918 case RTA_NETMASK: 919 case RTA_GENMASK: 920 /* bzero(su, sizeof(*su)); *//* for readability */ 921 } 922 return (0); 923 } 924 switch (afamily) { 925 #ifdef INET6 926 case AF_INET6: 927 if (inet_pton(AF_INET6, s, (void *)&su->sin6.sin6_addr) == -1) { 928 (void) fprintf(stderr, "%s: bad value\n", s); 929 exit(1); 930 } 931 return 0; 932 #endif 933 934 #ifdef NS 935 case AF_NS: 936 if (which == RTA_DST) { 937 extern short ns_bh[3]; 938 struct sockaddr_ns *sms = &(so_mask.sns); 939 bzero((char *)sms, sizeof(*sms)); 940 sms->sns_family = 0; 941 sms->sns_len = 6; 942 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 943 rtm_addrs |= RTA_NETMASK; 944 } 945 su->sns.sns_addr = ns_addr(s); 946 return (!ns_nullhost(su->sns.sns_addr)); 947 #endif 948 949 950 case AF_APPLETALK: 951 if (!atalk_aton(s, &su->sat.sat_addr)) 952 errx(EX_NOHOST, "bad address: %s", s); 953 rtm_addrs |= RTA_NETMASK; 954 return(forcehost || su->sat.sat_addr.s_node != 0); 955 956 case AF_LINK: 957 link_addr(s, &su->sdl); 958 return (1); 959 960 961 case PF_ROUTE: 962 su->sa.sa_len = sizeof(*su); 963 sockaddr(s, &su->sa); 964 return (1); 965 966 case AF_INET: 967 default: 968 break; 969 } 970 971 if (hpp == NULL) 972 hpp = &hp; 973 *hpp = NULL; 974 975 q = strchr(s,'/'); 976 if (q && which == RTA_DST) { 977 qs = *q; 978 *q = '\0'; 979 if (((val = inet_addr(s)) != INADDR_NONE)) { 980 inet_makenetandmask( 981 htonl(val), &su->sin, strtoul(q+1, 0, 0)); 982 return (0); 983 } 984 *q =qs; 985 } 986 if (((val = inet_addr(s)) != INADDR_NONE) && 987 (which != RTA_DST || forcenet == 0)) { 988 su->sin.sin_addr.s_addr = val; 989 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 990 return (1); 991 else { 992 val = ntohl(val); 993 goto netdone; 994 } 995 } 996 if ((val = inet_network(s)) != INADDR_NONE || 997 (forcehost == 0 && (np = getnetbyname(s)) != NULL && 998 (val = np->n_net) != 0)) { 999 netdone: 1000 if (which == RTA_DST) 1001 inet_makenetandmask(val, &su->sin, 0); 1002 return (0); 1003 } 1004 hp = gethostbyname(s); 1005 if (hp) { 1006 *hpp = hp; 1007 su->sin.sin_family = hp->h_addrtype; 1008 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, 1009 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1010 return (1); 1011 } 1012 errx(EX_NOHOST, "bad address: %s", s); 1013 } 1014 1015 int 1016 prefixlen(s) 1017 char *s; 1018 { 1019 int len = atoi(s), q, r; 1020 int max; 1021 char *p; 1022 1023 rtm_addrs |= RTA_NETMASK; 1024 switch (af) { 1025 #ifdef INET6 1026 case AF_INET6: 1027 max = 128; 1028 p = (char *)&so_mask.sin6.sin6_addr; 1029 break; 1030 #endif 1031 case AF_INET: 1032 max = 32; 1033 p = (char *)&so_mask.sin.sin_addr; 1034 break; 1035 default: 1036 (void) fprintf(stderr, "prefixlen not supported in this af\n"); 1037 exit(1); 1038 /*NOTREACHED*/ 1039 } 1040 1041 if (len < 0 || max < len) { 1042 (void) fprintf(stderr, "%s: bad value\n", s); 1043 exit(1); 1044 } 1045 1046 q = len >> 3; 1047 r = len & 7; 1048 so_mask.sa.sa_family = af; 1049 so_mask.sa.sa_len = aflen; 1050 memset((void *)p, 0, max / 8); 1051 if (q > 0) 1052 memset((void *)p, 0xff, q); 1053 if (r > 0) 1054 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1055 if (len == max) 1056 return -1; 1057 else 1058 return len; 1059 } 1060 1061 #ifdef NS 1062 short ns_nullh[] = {0,0,0}; 1063 short ns_bh[] = {-1,-1,-1}; 1064 1065 char * 1066 ns_print(sns) 1067 struct sockaddr_ns *sns; 1068 { 1069 struct ns_addr work; 1070 union { union ns_net net_e; u_long long_e; } net; 1071 u_short port; 1072 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 1073 char *host = ""; 1074 register char *p; 1075 register u_char *q; 1076 1077 work = sns->sns_addr; 1078 port = ntohs(work.x_port); 1079 work.x_port = 0; 1080 net.net_e = work.x_net; 1081 if (ns_nullhost(work) && net.long_e == 0) { 1082 if (!port) 1083 return ("*.*"); 1084 (void) sprintf(mybuf, "*.%XH", port); 1085 return (mybuf); 1086 } 1087 1088 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0) 1089 host = "any"; 1090 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0) 1091 host = "*"; 1092 else { 1093 q = work.x_host.c_host; 1094 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 1095 q[0], q[1], q[2], q[3], q[4], q[5]); 1096 for (p = chost; *p == '0' && p < chost + 12; p++) 1097 /* void */; 1098 host = p; 1099 } 1100 if (port) 1101 (void) sprintf(cport, ".%XH", htons(port)); 1102 else 1103 *cport = 0; 1104 1105 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 1106 (unsigned long)ntohl(net.long_e), 1107 host, cport); 1108 return (mybuf); 1109 } 1110 #endif 1111 1112 void 1113 interfaces() 1114 { 1115 size_t needed; 1116 int mib[6]; 1117 char *buf, *lim, *next; 1118 register struct rt_msghdr *rtm; 1119 1120 mib[0] = CTL_NET; 1121 mib[1] = PF_ROUTE; 1122 mib[2] = 0; /* protocol */ 1123 mib[3] = 0; /* wildcard address family */ 1124 mib[4] = NET_RT_IFLIST; 1125 mib[5] = 0; /* no flags */ 1126 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1127 err(EX_OSERR, "route-sysctl-estimate"); 1128 if ((buf = malloc(needed)) == NULL) 1129 errx(EX_OSERR, "malloc failed"); 1130 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1131 err(EX_OSERR, "actual retrieval of interface table"); 1132 lim = buf + needed; 1133 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1134 rtm = (struct rt_msghdr *)next; 1135 print_rtmsg(rtm, rtm->rtm_msglen); 1136 } 1137 } 1138 1139 void 1140 monitor() 1141 { 1142 int n; 1143 char msg[2048]; 1144 1145 verbose = 1; 1146 if (debugonly) { 1147 interfaces(); 1148 exit(0); 1149 } 1150 for(;;) { 1151 time_t now; 1152 n = read(s, msg, 2048); 1153 now = time(NULL); 1154 (void) printf("got message of size %d on %s", n, ctime(&now)); 1155 print_rtmsg((struct rt_msghdr *)msg, n); 1156 } 1157 } 1158 1159 struct { 1160 struct rt_msghdr m_rtm; 1161 char m_space[512]; 1162 } m_rtmsg; 1163 1164 int 1165 rtmsg(cmd, flags) 1166 int cmd, flags; 1167 { 1168 static int seq; 1169 int rlen; 1170 register char *cp = m_rtmsg.m_space; 1171 register int l; 1172 1173 #define NEXTADDR(w, u) \ 1174 if (rtm_addrs & (w)) {\ 1175 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 1176 if (verbose) sodump(&(u),"u");\ 1177 } 1178 1179 errno = 0; 1180 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 1181 if (cmd == 'a') 1182 cmd = RTM_ADD; 1183 else if (cmd == 'c') 1184 cmd = RTM_CHANGE; 1185 else if (cmd == 'g') { 1186 cmd = RTM_GET; 1187 if (so_ifp.sa.sa_family == 0) { 1188 so_ifp.sa.sa_family = AF_LINK; 1189 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1190 rtm_addrs |= RTA_IFP; 1191 } 1192 } else 1193 cmd = RTM_DELETE; 1194 #define rtm m_rtmsg.m_rtm 1195 rtm.rtm_type = cmd; 1196 rtm.rtm_flags = flags; 1197 rtm.rtm_version = RTM_VERSION; 1198 rtm.rtm_seq = ++seq; 1199 rtm.rtm_addrs = rtm_addrs; 1200 rtm.rtm_rmx = rt_metrics; 1201 rtm.rtm_inits = rtm_inits; 1202 1203 if (rtm_addrs & RTA_NETMASK) 1204 mask_addr(); 1205 NEXTADDR(RTA_DST, so_dst); 1206 NEXTADDR(RTA_GATEWAY, so_gate); 1207 NEXTADDR(RTA_NETMASK, so_mask); 1208 NEXTADDR(RTA_GENMASK, so_genmask); 1209 NEXTADDR(RTA_IFP, so_ifp); 1210 NEXTADDR(RTA_IFA, so_ifa); 1211 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1212 if (verbose) 1213 print_rtmsg(&rtm, l); 1214 if (debugonly) 1215 return (0); 1216 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1217 warn("writing to routing socket"); 1218 return (-1); 1219 } 1220 if (cmd == RTM_GET) { 1221 do { 1222 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1223 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1224 if (l < 0) 1225 warn("read from routing socket"); 1226 else 1227 print_getmsg(&rtm, l); 1228 } 1229 #undef rtm 1230 return (0); 1231 } 1232 1233 void 1234 mask_addr() 1235 { 1236 int olen = so_mask.sa.sa_len; 1237 register char *cp1 = olen + (char *)&so_mask, *cp2; 1238 1239 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1240 if (*--cp1 != 0) { 1241 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1242 break; 1243 } 1244 if ((rtm_addrs & RTA_DST) == 0) 1245 return; 1246 switch (so_dst.sa.sa_family) { 1247 #ifdef NS 1248 case AF_NS: 1249 #endif 1250 case AF_INET: 1251 #ifdef INET6 1252 case AF_INET6: 1253 #endif 1254 case AF_APPLETALK: 1255 case 0: 1256 return; 1257 } 1258 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1259 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1260 while (cp2 > cp1) 1261 *--cp2 = 0; 1262 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1263 while (cp1 > so_dst.sa.sa_data) 1264 *--cp1 &= *--cp2; 1265 } 1266 1267 char *msgtypes[] = { 1268 "", 1269 "RTM_ADD: Add Route", 1270 "RTM_DELETE: Delete Route", 1271 "RTM_CHANGE: Change Metrics or flags", 1272 "RTM_GET: Report Metrics", 1273 "RTM_LOSING: Kernel Suspects Partitioning", 1274 "RTM_REDIRECT: Told to use different route", 1275 "RTM_MISS: Lookup failed on this address", 1276 "RTM_LOCK: fix specified metrics", 1277 "RTM_OLDADD: caused by SIOCADDRT", 1278 "RTM_OLDDEL: caused by SIOCDELRT", 1279 "RTM_RESOLVE: Route created by cloning", 1280 "RTM_NEWADDR: address being added to iface", 1281 "RTM_DELADDR: address being removed from iface", 1282 "RTM_IFINFO: iface status change", 1283 "RTM_NEWMADDR: new multicast group membership on iface", 1284 "RTM_DELMADDR: multicast group membership removed from iface", 1285 0, 1286 }; 1287 1288 char metricnames[] = 1289 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1290 "\1mtu"; 1291 char routeflags[] = 1292 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1293 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1294 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1295 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1296 char ifnetflags[] = 1297 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1298 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1299 "\017LINK2\020MULTICAST"; 1300 char addrnames[] = 1301 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1302 1303 void 1304 print_rtmsg(rtm, msglen) 1305 register struct rt_msghdr *rtm; 1306 int msglen; 1307 { 1308 struct if_msghdr *ifm; 1309 struct ifa_msghdr *ifam; 1310 #ifdef RTM_NEWMADDR 1311 struct ifma_msghdr *ifmam; 1312 #endif 1313 1314 if (verbose == 0) 1315 return; 1316 if (rtm->rtm_version != RTM_VERSION) { 1317 (void) printf("routing message version %d not understood\n", 1318 rtm->rtm_version); 1319 return; 1320 } 1321 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1322 switch (rtm->rtm_type) { 1323 case RTM_IFINFO: 1324 ifm = (struct if_msghdr *)rtm; 1325 (void) printf("if# %d, flags:", ifm->ifm_index); 1326 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1327 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1328 break; 1329 case RTM_NEWADDR: 1330 case RTM_DELADDR: 1331 ifam = (struct ifa_msghdr *)rtm; 1332 (void) printf("metric %d, flags:", ifam->ifam_metric); 1333 bprintf(stdout, ifam->ifam_flags, routeflags); 1334 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1335 break; 1336 #ifdef RTM_NEWMADDR 1337 case RTM_NEWMADDR: 1338 case RTM_DELMADDR: 1339 ifmam = (struct ifma_msghdr *)rtm; 1340 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1341 break; 1342 #endif 1343 default: 1344 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1345 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1346 bprintf(stdout, rtm->rtm_flags, routeflags); 1347 pmsg_common(rtm); 1348 } 1349 } 1350 1351 void 1352 print_getmsg(rtm, msglen) 1353 register struct rt_msghdr *rtm; 1354 int msglen; 1355 { 1356 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1357 struct sockaddr_dl *ifp = NULL; 1358 register struct sockaddr *sa; 1359 register char *cp; 1360 register int i; 1361 1362 (void) printf(" route to: %s\n", routename(&so_dst)); 1363 if (rtm->rtm_version != RTM_VERSION) { 1364 warnx("routing message version %d not understood", 1365 rtm->rtm_version); 1366 return; 1367 } 1368 if (rtm->rtm_msglen > msglen) { 1369 warnx("message length mismatch, in packet %d, returned %d", 1370 rtm->rtm_msglen, msglen); 1371 } 1372 if (rtm->rtm_errno) { 1373 errno = rtm->rtm_errno; 1374 warn("message indicates error %d", errno); 1375 return; 1376 } 1377 cp = ((char *)(rtm + 1)); 1378 if (rtm->rtm_addrs) 1379 for (i = 1; i; i <<= 1) 1380 if (i & rtm->rtm_addrs) { 1381 sa = (struct sockaddr *)cp; 1382 switch (i) { 1383 case RTA_DST: 1384 dst = sa; 1385 break; 1386 case RTA_GATEWAY: 1387 gate = sa; 1388 break; 1389 case RTA_NETMASK: 1390 mask = sa; 1391 break; 1392 case RTA_IFP: 1393 if (sa->sa_family == AF_LINK && 1394 ((struct sockaddr_dl *)sa)->sdl_nlen) 1395 ifp = (struct sockaddr_dl *)sa; 1396 break; 1397 } 1398 ADVANCE(cp, sa); 1399 } 1400 if (dst && mask) 1401 mask->sa_family = dst->sa_family; /* XXX */ 1402 if (dst) 1403 (void)printf("destination: %s\n", routename(dst)); 1404 if (mask) { 1405 int savenflag = nflag; 1406 1407 nflag = 1; 1408 (void)printf(" mask: %s\n", routename(mask)); 1409 nflag = savenflag; 1410 } 1411 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1412 (void)printf(" gateway: %s\n", routename(gate)); 1413 if (ifp) 1414 (void)printf(" interface: %.*s\n", 1415 ifp->sdl_nlen, ifp->sdl_data); 1416 (void)printf(" flags: "); 1417 bprintf(stdout, rtm->rtm_flags, routeflags); 1418 1419 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1420 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1421 1422 (void) printf("\n%s\n", "\ 1423 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1424 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1425 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1426 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1427 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1428 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1429 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1430 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1431 if (rtm->rtm_rmx.rmx_expire) 1432 rtm->rtm_rmx.rmx_expire -= time(0); 1433 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1434 #undef lock 1435 #undef msec 1436 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1437 if (verbose) 1438 pmsg_common(rtm); 1439 else if (rtm->rtm_addrs &~ RTA_IGN) { 1440 (void) printf("sockaddrs: "); 1441 bprintf(stdout, rtm->rtm_addrs, addrnames); 1442 putchar('\n'); 1443 } 1444 #undef RTA_IGN 1445 } 1446 1447 void 1448 pmsg_common(rtm) 1449 register struct rt_msghdr *rtm; 1450 { 1451 (void) printf("\nlocks: "); 1452 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1453 (void) printf(" inits: "); 1454 bprintf(stdout, rtm->rtm_inits, metricnames); 1455 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1456 } 1457 1458 void 1459 pmsg_addrs(cp, addrs) 1460 char *cp; 1461 int addrs; 1462 { 1463 register struct sockaddr *sa; 1464 int i; 1465 1466 if (addrs == 0) 1467 return; 1468 (void) printf("\nsockaddrs: "); 1469 bprintf(stdout, addrs, addrnames); 1470 (void) putchar('\n'); 1471 for (i = 1; i; i <<= 1) 1472 if (i & addrs) { 1473 sa = (struct sockaddr *)cp; 1474 (void) printf(" %s", routename(sa)); 1475 ADVANCE(cp, sa); 1476 } 1477 (void) putchar('\n'); 1478 (void) fflush(stdout); 1479 } 1480 1481 void 1482 bprintf(fp, b, s) 1483 register FILE *fp; 1484 register int b; 1485 register u_char *s; 1486 { 1487 register int i; 1488 int gotsome = 0; 1489 1490 if (b == 0) 1491 return; 1492 while ((i = *s++) != 0) { 1493 if (b & (1 << (i-1))) { 1494 if (gotsome == 0) 1495 i = '<'; 1496 else 1497 i = ','; 1498 (void) putc(i, fp); 1499 gotsome = 1; 1500 for (; (i = *s) > 32; s++) 1501 (void) putc(i, fp); 1502 } else 1503 while (*s > 32) 1504 s++; 1505 } 1506 if (gotsome) 1507 (void) putc('>', fp); 1508 } 1509 1510 int 1511 keyword(cp) 1512 char *cp; 1513 { 1514 register struct keytab *kt = keywords; 1515 1516 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1517 kt++; 1518 return kt->kt_i; 1519 } 1520 1521 void 1522 sodump(su, which) 1523 register sup su; 1524 char *which; 1525 { 1526 switch (su->sa.sa_family) { 1527 case AF_LINK: 1528 (void) printf("%s: link %s; ", 1529 which, link_ntoa(&su->sdl)); 1530 break; 1531 case AF_INET: 1532 (void) printf("%s: inet %s; ", 1533 which, inet_ntoa(su->sin.sin_addr)); 1534 break; 1535 case AF_APPLETALK: 1536 (void) printf("%s: atalk %s; ", 1537 which, atalk_ntoa(su->sat.sat_addr)); 1538 break; 1539 #ifdef NS 1540 case AF_NS: 1541 (void) printf("%s: xns %s; ", 1542 which, ns_ntoa(su->sns.sns_addr)); 1543 break; 1544 #endif 1545 } 1546 (void) fflush(stdout); 1547 } 1548 1549 /* States*/ 1550 #define VIRGIN 0 1551 #define GOTONE 1 1552 #define GOTTWO 2 1553 /* Inputs */ 1554 #define DIGIT (4*0) 1555 #define END (4*1) 1556 #define DELIM (4*2) 1557 1558 void 1559 sockaddr(addr, sa) 1560 register char *addr; 1561 register struct sockaddr *sa; 1562 { 1563 register char *cp = (char *)sa; 1564 int size = sa->sa_len; 1565 char *cplim = cp + size; 1566 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1567 1568 bzero(cp, size); 1569 cp++; 1570 do { 1571 if ((*addr >= '0') && (*addr <= '9')) { 1572 new = *addr - '0'; 1573 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1574 new = *addr - 'a' + 10; 1575 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1576 new = *addr - 'A' + 10; 1577 } else if (*addr == 0) 1578 state |= END; 1579 else 1580 state |= DELIM; 1581 addr++; 1582 switch (state /* | INPUT */) { 1583 case GOTTWO | DIGIT: 1584 *cp++ = byte; /*FALLTHROUGH*/ 1585 case VIRGIN | DIGIT: 1586 state = GOTONE; byte = new; continue; 1587 case GOTONE | DIGIT: 1588 state = GOTTWO; byte = new + (byte << 4); continue; 1589 default: /* | DELIM */ 1590 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1591 case GOTONE | END: 1592 case GOTTWO | END: 1593 *cp++ = byte; /* FALLTHROUGH */ 1594 case VIRGIN | END: 1595 break; 1596 } 1597 break; 1598 } while (cp < cplim); 1599 sa->sa_len = cp - (char *)sa; 1600 } 1601 1602 int 1603 atalk_aton(const char *text, struct at_addr *addr) 1604 { 1605 u_int net, node; 1606 1607 if (sscanf(text, "%u.%u", &net, &node) != 2 1608 || net > 0xffff || node > 0xff) 1609 return(0); 1610 addr->s_net = htons(net); 1611 addr->s_node = node; 1612 return(1); 1613 } 1614 1615 char * 1616 atalk_ntoa(struct at_addr at) 1617 { 1618 static char buf[20]; 1619 1620 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1621 return(buf); 1622 } 1623