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 <paths.h> 70 #include <stdio.h> 71 #include <stdlib.h> 72 #include <string.h> 73 #include <sysexits.h> 74 #include <unistd.h> 75 76 /* wrapper for KAME-special getnameinfo() */ 77 #ifndef NI_WITHSCOPEID 78 #define NI_WITHSCOPEID 0 79 #endif 80 81 struct keytab { 82 char *kt_cp; 83 int kt_i; 84 } keywords[] = { 85 #include "keywords.h" 86 {0, 0} 87 }; 88 89 struct ortentry route; 90 union sockunion { 91 struct sockaddr sa; 92 struct sockaddr_in sin; 93 #ifdef INET6 94 struct sockaddr_in6 sin6; 95 #endif 96 struct sockaddr_at sat; 97 #ifdef NS 98 struct sockaddr_ns sns; 99 #endif 100 struct sockaddr_dl sdl; 101 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 102 103 typedef union sockunion *sup; 104 int pid, rtm_addrs, uid; 105 int s; 106 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 107 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 108 int locking, lockrest, debugonly; 109 struct rt_metrics rt_metrics; 110 u_long rtm_inits; 111 int atalk_aton __P((const char *, struct at_addr *)); 112 char *atalk_ntoa __P((struct at_addr)); 113 #ifdef INET6 114 char *inet6_ntoa __P((struct sockaddr *sa)); 115 #endif 116 char *routename(), *netname(); 117 void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 118 void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 119 int getaddr(), rtmsg(), x25_makemask(); 120 int prefixlen(); 121 extern char *iso_ntoa(); 122 123 void usage __P((const char *)) __dead2; 124 125 #ifdef INET6 126 char name_buf[MAXHOSTNAMELEN * 2 + 1]; /*for getnameinfo()*/ 127 #endif 128 129 void 130 usage(cp) 131 const char *cp; 132 { 133 if (cp) 134 warnx("bad keyword: %s", cp); 135 (void) fprintf(stderr, 136 "usage: route [-dnqtv] command [[modifiers] args]\n"); 137 exit(EX_USAGE); 138 /* NOTREACHED */ 139 } 140 141 #define ROUNDUP(a) \ 142 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 143 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 144 145 int 146 main(argc, argv) 147 int argc; 148 char **argv; 149 { 150 int ch; 151 152 if (argc < 2) 153 usage((char *)NULL); 154 155 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 156 switch(ch) { 157 case 'n': 158 nflag = 1; 159 break; 160 case 'q': 161 qflag = 1; 162 break; 163 case 'v': 164 verbose = 1; 165 break; 166 case 't': 167 tflag = 1; 168 break; 169 case 'd': 170 debugonly = 1; 171 break; 172 case '?': 173 default: 174 usage((char *)NULL); 175 } 176 argc -= optind; 177 argv += optind; 178 179 pid = getpid(); 180 uid = getuid(); 181 if (tflag) 182 s = open(_PATH_DEVNULL, O_WRONLY, 0); 183 else 184 s = socket(PF_ROUTE, SOCK_RAW, 0); 185 if (s < 0) 186 err(EX_OSERR, "socket"); 187 setuid(uid); 188 if (*argv) 189 switch (keyword(*argv)) { 190 case K_GET: 191 uid = 0; 192 /* FALLTHROUGH */ 193 194 case K_CHANGE: 195 case K_ADD: 196 case K_DELETE: 197 newroute(argc, argv); 198 exit(0); 199 /* NOTREACHED */ 200 201 case K_MONITOR: 202 monitor(); 203 /* NOTREACHED */ 204 205 case K_FLUSH: 206 flushroutes(argc, argv); 207 exit(0); 208 /* NOTREACHED */ 209 } 210 usage(*argv); 211 /* NOTREACHED */ 212 } 213 214 /* 215 * Purge all entries in the routing tables not 216 * associated with network interfaces. 217 */ 218 void 219 flushroutes(argc, argv) 220 int argc; 221 char *argv[]; 222 { 223 size_t needed; 224 int mib[6], rlen, seqno; 225 char *buf, *next, *lim; 226 register struct rt_msghdr *rtm; 227 228 if (uid) { 229 errx(EX_NOPERM, "must be root to alter routing table"); 230 } 231 shutdown(s, 0); /* Don't want to read back our messages */ 232 if (argc > 1) { 233 argv++; 234 if (argc == 2 && **argv == '-') 235 switch (keyword(*argv + 1)) { 236 case K_INET: 237 af = AF_INET; 238 break; 239 #ifdef INET6 240 case K_INET6: 241 af = AF_INET6; 242 break; 243 #endif 244 case K_ATALK: 245 af = AF_APPLETALK; 246 break; 247 #ifdef NS 248 case K_XNS: 249 af = AF_NS; 250 break; 251 #endif 252 case K_LINK: 253 af = AF_LINK; 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 (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 267 err(EX_OSERR, "route-sysctl-estimate"); 268 if ((buf = malloc(needed)) == NULL) 269 errx(EX_OSERR, "malloc failed"); 270 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 271 err(EX_OSERR, "route-sysctl-get"); 272 lim = buf + needed; 273 if (verbose) 274 (void) printf("Examining routing table from sysctl\n"); 275 seqno = 0; /* ??? */ 276 for (next = buf; next < lim; next += rtm->rtm_msglen) { 277 rtm = (struct rt_msghdr *)next; 278 if (verbose) 279 print_rtmsg(rtm, rtm->rtm_msglen); 280 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 281 continue; 282 if (af) { 283 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 284 285 if (sa->sa_family != af) 286 continue; 287 } 288 if (debugonly) 289 continue; 290 rtm->rtm_type = RTM_DELETE; 291 rtm->rtm_seq = seqno; 292 rlen = write(s, next, rtm->rtm_msglen); 293 if (rlen < (int)rtm->rtm_msglen) { 294 warn("write to routing socket"); 295 (void) printf("got only %d for rlen\n", rlen); 296 break; 297 } 298 seqno++; 299 if (qflag) 300 continue; 301 if (verbose) 302 print_rtmsg(rtm, rlen); 303 else { 304 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 305 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 306 routename(sa) : netname(sa)); 307 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 308 (void) printf("%-20.20s ", routename(sa)); 309 (void) printf("done\n"); 310 } 311 } 312 } 313 314 char * 315 routename(sa) 316 struct sockaddr *sa; 317 { 318 register char *cp; 319 static char line[MAXHOSTNAMELEN + 1]; 320 struct hostent *hp; 321 static char domain[MAXHOSTNAMELEN + 1]; 322 static int first = 1; 323 #ifdef NS 324 char *ns_print(); 325 #endif 326 327 if (first) { 328 first = 0; 329 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 330 (cp = index(domain, '.'))) { 331 domain[MAXHOSTNAMELEN] = '\0'; 332 (void) 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 = 0; 346 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 347 cp = "default"; 348 if (cp == 0 && !nflag) { 349 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 350 AF_INET); 351 if (hp) { 352 if ((cp = index(hp->h_name, '.')) && 353 !strcmp(cp + 1, domain)) 354 *cp = 0; 355 cp = hp->h_name; 356 } 357 } 358 if (cp) { 359 strncpy(line, cp, sizeof(line) - 1); 360 line[sizeof(line) - 1] = '\0'; 361 } else { 362 /* XXX - why not inet_ntoa()? */ 363 #define C(x) (unsigned)((x) & 0xff) 364 in.s_addr = ntohl(in.s_addr); 365 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 366 C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr)); 367 } 368 break; 369 } 370 371 #ifdef INET6 372 case AF_INET6: 373 (void) snprintf(line, sizeof(line), "%s", inet6_ntoa(sa)); 374 break; 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 (void) snprintf(line, sizeof(line), "%s", inet6_ntoa(sa)); 477 break; 478 #endif 479 480 case AF_APPLETALK: 481 (void) snprintf(line, sizeof(line), "atalk %s", 482 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 483 break; 484 485 #ifdef NS 486 case AF_NS: 487 return (ns_print((struct sockaddr_ns *)sa)); 488 break; 489 #endif 490 491 case AF_LINK: 492 return (link_ntoa((struct sockaddr_dl *)sa)); 493 494 495 default: 496 { u_short *s = (u_short *)sa->sa_data; 497 u_short *slim = s + ((sa->sa_len + 1)>>1); 498 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 499 char *cpe = line + sizeof(line); 500 501 while (s < slim && cp < cpe) 502 cp += snprintf(cp, cpe - cp, " %x", *s++); 503 break; 504 } 505 } 506 return (line); 507 } 508 509 void 510 set_metric(value, key) 511 char *value; 512 int key; 513 { 514 int flag = 0; 515 u_long noval, *valp = &noval; 516 517 switch (key) { 518 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 519 caseof(K_MTU, RTV_MTU, rmx_mtu); 520 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 521 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 522 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 523 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 524 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 525 caseof(K_RTT, RTV_RTT, rmx_rtt); 526 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 527 } 528 rtm_inits |= flag; 529 if (lockrest || locking) 530 rt_metrics.rmx_locks |= flag; 531 if (locking) 532 locking = 0; 533 *valp = atoi(value); 534 } 535 536 void 537 newroute(argc, argv) 538 int argc; 539 register char **argv; 540 { 541 char *cmd, *dest = "", *gateway = "", *err; 542 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 543 int key; 544 struct hostent *hp = 0; 545 546 if (uid) { 547 errx(EX_NOPERM, "must be root to alter routing table"); 548 } 549 cmd = argv[0]; 550 if (*cmd != 'g') 551 shutdown(s, 0); /* Don't want to read back our messages */ 552 while (--argc > 0) { 553 if (**(++argv)== '-') { 554 switch (key = keyword(1 + *argv)) { 555 case K_LINK: 556 af = AF_LINK; 557 aflen = sizeof(struct sockaddr_dl); 558 break; 559 case K_INET: 560 af = AF_INET; 561 aflen = sizeof(struct sockaddr_in); 562 break; 563 #ifdef INET6 564 case K_INET6: 565 af = AF_INET6; 566 aflen = sizeof(struct sockaddr_in6); 567 break; 568 #endif 569 case K_ATALK: 570 af = AF_APPLETALK; 571 aflen = sizeof(struct sockaddr_at); 572 break; 573 case K_SA: 574 af = PF_ROUTE; 575 aflen = sizeof(union sockunion); 576 break; 577 #ifdef NS 578 case K_XNS: 579 af = AF_NS; 580 aflen = sizeof(struct sockaddr_ns); 581 break; 582 #endif 583 case K_IFACE: 584 case K_INTERFACE: 585 iflag++; 586 break; 587 case K_NOSTATIC: 588 flags &= ~RTF_STATIC; 589 break; 590 case K_LLINFO: 591 flags |= RTF_LLINFO; 592 break; 593 case K_LOCK: 594 locking = 1; 595 break; 596 case K_LOCKREST: 597 lockrest = 1; 598 break; 599 case K_HOST: 600 forcehost++; 601 break; 602 case K_REJECT: 603 flags |= RTF_REJECT; 604 break; 605 case K_BLACKHOLE: 606 flags |= RTF_BLACKHOLE; 607 break; 608 case K_PROTO1: 609 flags |= RTF_PROTO1; 610 break; 611 case K_PROTO2: 612 flags |= RTF_PROTO2; 613 break; 614 case K_CLONING: 615 flags |= RTF_CLONING; 616 break; 617 case K_XRESOLVE: 618 flags |= RTF_XRESOLVE; 619 break; 620 case K_STATIC: 621 flags |= RTF_STATIC; 622 break; 623 case K_IFA: 624 if (!--argc) 625 usage((char *)NULL); 626 (void) getaddr(RTA_IFA, *++argv, 0); 627 break; 628 case K_IFP: 629 if (!--argc) 630 usage((char *)NULL); 631 (void) getaddr(RTA_IFP, *++argv, 0); 632 break; 633 case K_GENMASK: 634 if (!--argc) 635 usage((char *)NULL); 636 (void) getaddr(RTA_GENMASK, *++argv, 0); 637 break; 638 case K_GATEWAY: 639 if (!--argc) 640 usage((char *)NULL); 641 (void) getaddr(RTA_GATEWAY, *++argv, 0); 642 break; 643 case K_DST: 644 if (!--argc) 645 usage((char *)NULL); 646 ishost = getaddr(RTA_DST, *++argv, &hp); 647 dest = *argv; 648 break; 649 case K_NETMASK: 650 if (!--argc) 651 usage((char *)NULL); 652 (void) getaddr(RTA_NETMASK, *++argv, 0); 653 /* FALLTHROUGH */ 654 case K_NET: 655 forcenet++; 656 break; 657 case K_PREFIXLEN: 658 if (!--argc) 659 usage((char *)NULL); 660 if (prefixlen(*++argv) == -1) { 661 forcenet = 0; 662 ishost = 1; 663 } else { 664 forcenet = 1; 665 ishost = 0; 666 } 667 break; 668 case K_MTU: 669 case K_HOPCOUNT: 670 case K_EXPIRE: 671 case K_RECVPIPE: 672 case K_SENDPIPE: 673 case K_SSTHRESH: 674 case K_RTT: 675 case K_RTTVAR: 676 if (!--argc) 677 usage((char *)NULL); 678 set_metric(*++argv, key); 679 break; 680 default: 681 usage(1+*argv); 682 } 683 } else { 684 if ((rtm_addrs & RTA_DST) == 0) { 685 dest = *argv; 686 ishost = getaddr(RTA_DST, *argv, &hp); 687 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 688 gateway = *argv; 689 (void) getaddr(RTA_GATEWAY, *argv, &hp); 690 } else { 691 (void) getaddr(RTA_NETMASK, *argv, 0); 692 } 693 } 694 } 695 if (forcehost) { 696 ishost = 1; 697 #ifdef INET6 698 if (af == AF_INET6) { 699 rtm_addrs &= ~RTA_NETMASK; 700 memset((void *)&so_mask, 0, sizeof(so_mask)); 701 } 702 #endif 703 } 704 if (forcenet) 705 ishost = 0; 706 flags |= RTF_UP; 707 if (ishost) 708 flags |= RTF_HOST; 709 if (iflag == 0) 710 flags |= RTF_GATEWAY; 711 for (attempts = 1; ; attempts++) { 712 errno = 0; 713 if ((ret = rtmsg(*cmd, flags)) == 0) 714 break; 715 if (errno != ENETUNREACH && errno != ESRCH) 716 break; 717 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 718 hp->h_addr_list++; 719 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr, 720 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 721 } else 722 break; 723 } 724 if (*cmd == 'g') 725 exit(0); 726 oerrno = errno; 727 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 728 if (*gateway) { 729 (void) printf(": gateway %s", gateway); 730 if (attempts > 1 && ret == 0 && af == AF_INET) 731 (void) printf(" (%s)", 732 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 733 } 734 if (ret == 0) 735 (void) printf("\n"); 736 else { 737 switch (oerrno) { 738 case ESRCH: 739 err = "not in table"; 740 break; 741 case EBUSY: 742 err = "entry in use"; 743 break; 744 case ENOBUFS: 745 err = "routing table overflow"; 746 break; 747 default: 748 err = strerror(oerrno); 749 break; 750 } 751 (void) printf(": %s\n", err); 752 } 753 } 754 755 void 756 inet_makenetandmask(net, sin, bits) 757 u_long net, bits; 758 register struct sockaddr_in *sin; 759 { 760 u_long addr, mask = 0; 761 register char *cp; 762 763 rtm_addrs |= RTA_NETMASK; 764 if (bits) { 765 addr = net; 766 mask = 0xffffffff << (32 - bits); 767 } else if (net == 0) 768 mask = addr = 0; 769 else if (net < 128) { 770 addr = net << IN_CLASSA_NSHIFT; 771 mask = IN_CLASSA_NET; 772 } else if (net < 65536) { 773 addr = net << IN_CLASSB_NSHIFT; 774 mask = IN_CLASSB_NET; 775 } else if (net < 16777216L) { 776 addr = net << IN_CLASSC_NSHIFT; 777 mask = IN_CLASSC_NET; 778 } else { 779 addr = net; 780 if ((addr & IN_CLASSA_HOST) == 0) 781 mask = IN_CLASSA_NET; 782 else if ((addr & IN_CLASSB_HOST) == 0) 783 mask = IN_CLASSB_NET; 784 else if ((addr & IN_CLASSC_HOST) == 0) 785 mask = IN_CLASSC_NET; 786 else 787 mask = -1; 788 } 789 sin->sin_addr.s_addr = htonl(addr); 790 sin = &so_mask.sin; 791 sin->sin_addr.s_addr = htonl(mask); 792 sin->sin_len = 0; 793 sin->sin_family = 0; 794 cp = (char *)(&sin->sin_addr + 1); 795 while (*--cp == 0 && cp > (char *)sin) 796 ; 797 sin->sin_len = 1 + cp - (char *)sin; 798 } 799 800 /* 801 * Interpret an argument as a network address of some kind, 802 * returning 1 if a host address, 0 if a network address. 803 */ 804 int 805 getaddr(which, s, hpp) 806 int which; 807 char *s; 808 struct hostent **hpp; 809 { 810 register sup su; 811 struct hostent *hp; 812 struct netent *np; 813 u_long val; 814 char *q; 815 int afamily; /* local copy of af so we can change it */ 816 817 if (af == 0) { 818 af = AF_INET; 819 aflen = sizeof(struct sockaddr_in); 820 } 821 afamily = af; 822 rtm_addrs |= which; 823 switch (which) { 824 case RTA_DST: 825 su = &so_dst; 826 break; 827 case RTA_GATEWAY: 828 su = &so_gate; 829 if (iflag) { 830 #define MAX_IFACES 400 831 int sock; 832 struct ifreq iflist[MAX_IFACES]; 833 struct ifconf ifconf; 834 struct ifreq *ifr, *ifr_end; 835 struct sockaddr_dl *dl, *sdl = NULL; 836 837 /* Get socket */ 838 if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0) 839 err(1, "socket"); 840 841 /* Get interface list */ 842 ifconf.ifc_req = iflist; 843 ifconf.ifc_len = sizeof(iflist); 844 if (ioctl(sock, SIOCGIFCONF, &ifconf) < 0) 845 err(1, "ioctl(SIOCGIFCONF)"); 846 close(sock); 847 848 /* Look for this interface in the list */ 849 for (ifr = ifconf.ifc_req, 850 ifr_end = (struct ifreq *) 851 (ifconf.ifc_buf + ifconf.ifc_len); 852 ifr < ifr_end; 853 ifr = (struct ifreq *) ((char *) &ifr->ifr_addr 854 + MAX(ifr->ifr_addr.sa_len, 855 sizeof(ifr->ifr_addr)))) { 856 dl = (struct sockaddr_dl *)&ifr->ifr_addr; 857 if (ifr->ifr_addr.sa_family == AF_LINK 858 && (ifr->ifr_flags & IFF_POINTOPOINT) 859 && !strncmp(s, dl->sdl_data, dl->sdl_nlen) 860 && s[dl->sdl_nlen] == 0) { 861 sdl = dl; 862 break; 863 } 864 } 865 866 /* If we found it, then use it */ 867 if (sdl) { 868 su->sdl = *sdl; 869 return(1); 870 } 871 } 872 break; 873 case RTA_NETMASK: 874 su = &so_mask; 875 break; 876 case RTA_GENMASK: 877 su = &so_genmask; 878 break; 879 case RTA_IFP: 880 su = &so_ifp; 881 afamily = AF_LINK; 882 break; 883 case RTA_IFA: 884 su = &so_ifa; 885 break; 886 default: 887 usage("internal error"); 888 /*NOTREACHED*/ 889 } 890 su->sa.sa_len = aflen; 891 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 892 if (strcmp(s, "default") == 0) { 893 /* 894 * Default is net 0.0.0.0/0 895 */ 896 switch (which) { 897 case RTA_DST: 898 forcenet++; 899 /* bzero(su, sizeof(*su)); *//* for readability */ 900 (void) getaddr(RTA_NETMASK, s, 0); 901 break; 902 case RTA_NETMASK: 903 case RTA_GENMASK: 904 /* bzero(su, sizeof(*su)); *//* for readability */ 905 } 906 return (0); 907 } 908 switch (afamily) { 909 #ifdef INET6 910 case AF_INET6: 911 { 912 struct addrinfo hints, *res; 913 int error; 914 915 bzero(&hints, sizeof(struct addrinfo)); 916 hints.ai_family = AF_INET6; 917 918 error = getaddrinfo(s, NULL, &hints, &res); 919 if (error != 0) { 920 (void) fprintf(stderr, "%s: bad value\n", 921 gai_strerror(error)); 922 if (error == EAI_SYSTEM) 923 (void) fprintf(stderr, "%s\n", 924 strerror(errno)); 925 exit(1); 926 } 927 bcopy(res->ai_addr, &su->sa, res->ai_addrlen); 928 /* XXX: embedded link local addr check */ 929 if (IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) 930 *(u_short *)&su->sin6.sin6_addr.s6_addr[2] = 931 ntohs(su->sin6.sin6_scope_id); 932 su->sin6.sin6_scope_id = 0; 933 return 0; 934 } 935 #endif 936 937 #ifdef NS 938 case AF_NS: 939 if (which == RTA_DST) { 940 extern short ns_bh[3]; 941 struct sockaddr_ns *sms = &(so_mask.sns); 942 bzero((char *)sms, sizeof(*sms)); 943 sms->sns_family = 0; 944 sms->sns_len = 6; 945 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 946 rtm_addrs |= RTA_NETMASK; 947 } 948 su->sns.sns_addr = ns_addr(s); 949 return (!ns_nullhost(su->sns.sns_addr)); 950 #endif 951 952 953 case AF_APPLETALK: 954 if (!atalk_aton(s, &su->sat.sat_addr)) 955 errx(EX_NOHOST, "bad address: %s", s); 956 rtm_addrs |= RTA_NETMASK; 957 return(forcehost || su->sat.sat_addr.s_node != 0); 958 959 case AF_LINK: 960 link_addr(s, &su->sdl); 961 return (1); 962 963 964 case PF_ROUTE: 965 su->sa.sa_len = sizeof(*su); 966 sockaddr(s, &su->sa); 967 return (1); 968 969 case AF_INET: 970 default: 971 break; 972 } 973 974 if (hpp == NULL) 975 hpp = &hp; 976 *hpp = NULL; 977 978 q = strchr(s,'/'); 979 if (q && which == RTA_DST) { 980 *q = '\0'; 981 if ((val = inet_addr(s)) != INADDR_NONE) { 982 inet_makenetandmask( 983 ntohl(val), &su->sin, strtoul(q+1, 0, 0)); 984 return (0); 985 } 986 *q = '/'; 987 } 988 if ((which != RTA_DST || forcenet == 0) && 989 (val = inet_addr(s)) != INADDR_NONE) { 990 su->sin.sin_addr.s_addr = val; 991 if (which != RTA_DST || 992 inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 993 return (1); 994 else { 995 val = ntohl(val); 996 goto netdone; 997 } 998 } 999 if (which == RTA_DST && forcehost == 0 && 1000 ((val = inet_network(s)) != INADDR_NONE || 1001 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0))) { 1002 netdone: 1003 inet_makenetandmask(val, &su->sin, 0); 1004 return (0); 1005 } 1006 hp = gethostbyname(s); 1007 if (hp) { 1008 *hpp = hp; 1009 su->sin.sin_family = hp->h_addrtype; 1010 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, 1011 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1012 return (1); 1013 } 1014 errx(EX_NOHOST, "bad address: %s", s); 1015 } 1016 1017 int 1018 prefixlen(s) 1019 char *s; 1020 { 1021 int len = atoi(s), q, r; 1022 int max; 1023 char *p; 1024 1025 rtm_addrs |= RTA_NETMASK; 1026 switch (af) { 1027 #ifdef INET6 1028 case AF_INET6: 1029 max = 128; 1030 p = (char *)&so_mask.sin6.sin6_addr; 1031 break; 1032 #endif 1033 case AF_INET: 1034 max = 32; 1035 p = (char *)&so_mask.sin.sin_addr; 1036 break; 1037 default: 1038 (void) fprintf(stderr, "prefixlen not supported in this af\n"); 1039 exit(1); 1040 /*NOTREACHED*/ 1041 } 1042 1043 if (len < 0 || max < len) { 1044 (void) fprintf(stderr, "%s: bad value\n", s); 1045 exit(1); 1046 } 1047 1048 q = len >> 3; 1049 r = len & 7; 1050 so_mask.sa.sa_family = af; 1051 so_mask.sa.sa_len = aflen; 1052 memset((void *)p, 0, max / 8); 1053 if (q > 0) 1054 memset((void *)p, 0xff, q); 1055 if (r > 0) 1056 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1057 if (len == max) 1058 return -1; 1059 else 1060 return len; 1061 } 1062 1063 #ifdef NS 1064 short ns_nullh[] = {0,0,0}; 1065 short ns_bh[] = {-1,-1,-1}; 1066 1067 char * 1068 ns_print(sns) 1069 struct sockaddr_ns *sns; 1070 { 1071 struct ns_addr work; 1072 union { union ns_net net_e; u_long long_e; } net; 1073 u_short port; 1074 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 1075 char *host = ""; 1076 register char *p; 1077 register u_char *q; 1078 1079 work = sns->sns_addr; 1080 port = ntohs(work.x_port); 1081 work.x_port = 0; 1082 net.net_e = work.x_net; 1083 if (ns_nullhost(work) && net.long_e == 0) { 1084 if (!port) 1085 return ("*.*"); 1086 (void) sprintf(mybuf, "*.%XH", port); 1087 return (mybuf); 1088 } 1089 1090 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0) 1091 host = "any"; 1092 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0) 1093 host = "*"; 1094 else { 1095 q = work.x_host.c_host; 1096 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 1097 q[0], q[1], q[2], q[3], q[4], q[5]); 1098 for (p = chost; *p == '0' && p < chost + 12; p++) 1099 /* void */; 1100 host = p; 1101 } 1102 if (port) 1103 (void) sprintf(cport, ".%XH", htons(port)); 1104 else 1105 *cport = 0; 1106 1107 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 1108 (unsigned long)ntohl(net.long_e), 1109 host, cport); 1110 return (mybuf); 1111 } 1112 #endif 1113 1114 void 1115 interfaces() 1116 { 1117 size_t needed; 1118 int mib[6]; 1119 char *buf, *lim, *next; 1120 register struct rt_msghdr *rtm; 1121 1122 mib[0] = CTL_NET; 1123 mib[1] = PF_ROUTE; 1124 mib[2] = 0; /* protocol */ 1125 mib[3] = 0; /* wildcard address family */ 1126 mib[4] = NET_RT_IFLIST; 1127 mib[5] = 0; /* no flags */ 1128 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1129 err(EX_OSERR, "route-sysctl-estimate"); 1130 if ((buf = malloc(needed)) == NULL) 1131 errx(EX_OSERR, "malloc failed"); 1132 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1133 err(EX_OSERR, "actual retrieval of interface table"); 1134 lim = buf + needed; 1135 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1136 rtm = (struct rt_msghdr *)next; 1137 print_rtmsg(rtm, rtm->rtm_msglen); 1138 } 1139 } 1140 1141 void 1142 monitor() 1143 { 1144 int n; 1145 char msg[2048]; 1146 1147 verbose = 1; 1148 if (debugonly) { 1149 interfaces(); 1150 exit(0); 1151 } 1152 for(;;) { 1153 time_t now; 1154 n = read(s, msg, 2048); 1155 now = time(NULL); 1156 (void) printf("\ngot message of size %d on %s", n, ctime(&now)); 1157 print_rtmsg((struct rt_msghdr *)msg, n); 1158 } 1159 } 1160 1161 struct { 1162 struct rt_msghdr m_rtm; 1163 char m_space[512]; 1164 } m_rtmsg; 1165 1166 int 1167 rtmsg(cmd, flags) 1168 int cmd, flags; 1169 { 1170 static int seq; 1171 int rlen; 1172 register char *cp = m_rtmsg.m_space; 1173 register int l; 1174 1175 #define NEXTADDR(w, u) \ 1176 if (rtm_addrs & (w)) {\ 1177 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 1178 if (verbose) sodump(&(u),"u");\ 1179 } 1180 1181 errno = 0; 1182 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 1183 if (cmd == 'a') 1184 cmd = RTM_ADD; 1185 else if (cmd == 'c') 1186 cmd = RTM_CHANGE; 1187 else if (cmd == 'g') { 1188 cmd = RTM_GET; 1189 if (so_ifp.sa.sa_family == 0) { 1190 so_ifp.sa.sa_family = AF_LINK; 1191 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1192 rtm_addrs |= RTA_IFP; 1193 } 1194 } else 1195 cmd = RTM_DELETE; 1196 #define rtm m_rtmsg.m_rtm 1197 rtm.rtm_type = cmd; 1198 rtm.rtm_flags = flags; 1199 rtm.rtm_version = RTM_VERSION; 1200 rtm.rtm_seq = ++seq; 1201 rtm.rtm_addrs = rtm_addrs; 1202 rtm.rtm_rmx = rt_metrics; 1203 rtm.rtm_inits = rtm_inits; 1204 1205 if (rtm_addrs & RTA_NETMASK) 1206 mask_addr(); 1207 NEXTADDR(RTA_DST, so_dst); 1208 NEXTADDR(RTA_GATEWAY, so_gate); 1209 NEXTADDR(RTA_NETMASK, so_mask); 1210 NEXTADDR(RTA_GENMASK, so_genmask); 1211 NEXTADDR(RTA_IFP, so_ifp); 1212 NEXTADDR(RTA_IFA, so_ifa); 1213 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1214 if (verbose) 1215 print_rtmsg(&rtm, l); 1216 if (debugonly) 1217 return (0); 1218 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1219 warn("writing to routing socket"); 1220 return (-1); 1221 } 1222 if (cmd == RTM_GET) { 1223 do { 1224 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1225 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1226 if (l < 0) 1227 warn("read from routing socket"); 1228 else 1229 print_getmsg(&rtm, l); 1230 } 1231 #undef rtm 1232 return (0); 1233 } 1234 1235 void 1236 mask_addr() 1237 { 1238 int olen = so_mask.sa.sa_len; 1239 register char *cp1 = olen + (char *)&so_mask, *cp2; 1240 1241 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1242 if (*--cp1 != 0) { 1243 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1244 break; 1245 } 1246 if ((rtm_addrs & RTA_DST) == 0) 1247 return; 1248 switch (so_dst.sa.sa_family) { 1249 #ifdef NS 1250 case AF_NS: 1251 #endif 1252 case AF_INET: 1253 #ifdef INET6 1254 case AF_INET6: 1255 #endif 1256 case AF_APPLETALK: 1257 case 0: 1258 return; 1259 } 1260 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1261 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1262 while (cp2 > cp1) 1263 *--cp2 = 0; 1264 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1265 while (cp1 > so_dst.sa.sa_data) 1266 *--cp1 &= *--cp2; 1267 } 1268 1269 char *msgtypes[] = { 1270 "", 1271 "RTM_ADD: Add Route", 1272 "RTM_DELETE: Delete Route", 1273 "RTM_CHANGE: Change Metrics or flags", 1274 "RTM_GET: Report Metrics", 1275 "RTM_LOSING: Kernel Suspects Partitioning", 1276 "RTM_REDIRECT: Told to use different route", 1277 "RTM_MISS: Lookup failed on this address", 1278 "RTM_LOCK: fix specified metrics", 1279 "RTM_OLDADD: caused by SIOCADDRT", 1280 "RTM_OLDDEL: caused by SIOCDELRT", 1281 "RTM_RESOLVE: Route created by cloning", 1282 "RTM_NEWADDR: address being added to iface", 1283 "RTM_DELADDR: address being removed from iface", 1284 "RTM_IFINFO: iface status change", 1285 "RTM_NEWMADDR: new multicast group membership on iface", 1286 "RTM_DELMADDR: multicast group membership removed from iface", 1287 0, 1288 }; 1289 1290 char metricnames[] = 1291 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1292 "\1mtu"; 1293 char routeflags[] = 1294 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1295 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1296 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1297 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1298 char ifnetflags[] = 1299 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1300 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1301 "\017LINK2\020MULTICAST"; 1302 char addrnames[] = 1303 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1304 1305 void 1306 print_rtmsg(rtm, msglen) 1307 register struct rt_msghdr *rtm; 1308 int msglen; 1309 { 1310 struct if_msghdr *ifm; 1311 struct ifa_msghdr *ifam; 1312 #ifdef RTM_NEWMADDR 1313 struct ifma_msghdr *ifmam; 1314 #endif 1315 1316 if (verbose == 0) 1317 return; 1318 if (rtm->rtm_version != RTM_VERSION) { 1319 (void) printf("routing message version %d not understood\n", 1320 rtm->rtm_version); 1321 return; 1322 } 1323 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1324 switch (rtm->rtm_type) { 1325 case RTM_IFINFO: 1326 ifm = (struct if_msghdr *)rtm; 1327 (void) printf("if# %d, flags:", ifm->ifm_index); 1328 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1329 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1330 break; 1331 case RTM_NEWADDR: 1332 case RTM_DELADDR: 1333 ifam = (struct ifa_msghdr *)rtm; 1334 (void) printf("metric %d, flags:", ifam->ifam_metric); 1335 bprintf(stdout, ifam->ifam_flags, routeflags); 1336 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1337 break; 1338 #ifdef RTM_NEWMADDR 1339 case RTM_NEWMADDR: 1340 case RTM_DELMADDR: 1341 ifmam = (struct ifma_msghdr *)rtm; 1342 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1343 break; 1344 #endif 1345 default: 1346 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1347 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1348 bprintf(stdout, rtm->rtm_flags, routeflags); 1349 pmsg_common(rtm); 1350 } 1351 } 1352 1353 void 1354 print_getmsg(rtm, msglen) 1355 register struct rt_msghdr *rtm; 1356 int msglen; 1357 { 1358 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1359 struct sockaddr_dl *ifp = NULL; 1360 register struct sockaddr *sa; 1361 register char *cp; 1362 register int i; 1363 1364 (void) printf(" route to: %s\n", routename(&so_dst)); 1365 if (rtm->rtm_version != RTM_VERSION) { 1366 warnx("routing message version %d not understood", 1367 rtm->rtm_version); 1368 return; 1369 } 1370 if (rtm->rtm_msglen > msglen) { 1371 warnx("message length mismatch, in packet %d, returned %d", 1372 rtm->rtm_msglen, msglen); 1373 } 1374 if (rtm->rtm_errno) { 1375 errno = rtm->rtm_errno; 1376 warn("message indicates error %d", errno); 1377 return; 1378 } 1379 cp = ((char *)(rtm + 1)); 1380 if (rtm->rtm_addrs) 1381 for (i = 1; i; i <<= 1) 1382 if (i & rtm->rtm_addrs) { 1383 sa = (struct sockaddr *)cp; 1384 switch (i) { 1385 case RTA_DST: 1386 dst = sa; 1387 break; 1388 case RTA_GATEWAY: 1389 gate = sa; 1390 break; 1391 case RTA_NETMASK: 1392 mask = sa; 1393 break; 1394 case RTA_IFP: 1395 if (sa->sa_family == AF_LINK && 1396 ((struct sockaddr_dl *)sa)->sdl_nlen) 1397 ifp = (struct sockaddr_dl *)sa; 1398 break; 1399 } 1400 ADVANCE(cp, sa); 1401 } 1402 if (dst && mask) 1403 mask->sa_family = dst->sa_family; /* XXX */ 1404 if (dst) 1405 (void)printf("destination: %s\n", routename(dst)); 1406 if (mask) { 1407 int savenflag = nflag; 1408 1409 nflag = 1; 1410 (void)printf(" mask: %s\n", routename(mask)); 1411 nflag = savenflag; 1412 } 1413 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1414 (void)printf(" gateway: %s\n", routename(gate)); 1415 if (ifp) 1416 (void)printf(" interface: %.*s\n", 1417 ifp->sdl_nlen, ifp->sdl_data); 1418 (void)printf(" flags: "); 1419 bprintf(stdout, rtm->rtm_flags, routeflags); 1420 1421 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1422 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1423 1424 (void) printf("\n%s\n", "\ 1425 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1426 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1427 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1428 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1429 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1430 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1431 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1432 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1433 if (rtm->rtm_rmx.rmx_expire) 1434 rtm->rtm_rmx.rmx_expire -= time(0); 1435 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1436 #undef lock 1437 #undef msec 1438 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1439 if (verbose) 1440 pmsg_common(rtm); 1441 else if (rtm->rtm_addrs &~ RTA_IGN) { 1442 (void) printf("sockaddrs: "); 1443 bprintf(stdout, rtm->rtm_addrs, addrnames); 1444 putchar('\n'); 1445 } 1446 #undef RTA_IGN 1447 } 1448 1449 void 1450 pmsg_common(rtm) 1451 register struct rt_msghdr *rtm; 1452 { 1453 (void) printf("\nlocks: "); 1454 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1455 (void) printf(" inits: "); 1456 bprintf(stdout, rtm->rtm_inits, metricnames); 1457 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1458 } 1459 1460 void 1461 pmsg_addrs(cp, addrs) 1462 char *cp; 1463 int addrs; 1464 { 1465 register struct sockaddr *sa; 1466 int i; 1467 1468 if (addrs == 0) { 1469 (void) putchar('\n'); 1470 return; 1471 } 1472 (void) printf("\nsockaddrs: "); 1473 bprintf(stdout, addrs, addrnames); 1474 (void) putchar('\n'); 1475 for (i = 1; i; i <<= 1) 1476 if (i & addrs) { 1477 sa = (struct sockaddr *)cp; 1478 (void) printf(" %s", routename(sa)); 1479 ADVANCE(cp, sa); 1480 } 1481 (void) putchar('\n'); 1482 (void) fflush(stdout); 1483 } 1484 1485 void 1486 bprintf(fp, b, s) 1487 register FILE *fp; 1488 register int b; 1489 register u_char *s; 1490 { 1491 register int i; 1492 int gotsome = 0; 1493 1494 if (b == 0) 1495 return; 1496 while ((i = *s++) != 0) { 1497 if (b & (1 << (i-1))) { 1498 if (gotsome == 0) 1499 i = '<'; 1500 else 1501 i = ','; 1502 (void) putc(i, fp); 1503 gotsome = 1; 1504 for (; (i = *s) > 32; s++) 1505 (void) putc(i, fp); 1506 } else 1507 while (*s > 32) 1508 s++; 1509 } 1510 if (gotsome) 1511 (void) putc('>', fp); 1512 } 1513 1514 int 1515 keyword(cp) 1516 char *cp; 1517 { 1518 register struct keytab *kt = keywords; 1519 1520 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1521 kt++; 1522 return kt->kt_i; 1523 } 1524 1525 void 1526 sodump(su, which) 1527 register sup su; 1528 char *which; 1529 { 1530 switch (su->sa.sa_family) { 1531 case AF_LINK: 1532 (void) printf("%s: link %s; ", 1533 which, link_ntoa(&su->sdl)); 1534 break; 1535 case AF_INET: 1536 (void) printf("%s: inet %s; ", 1537 which, inet_ntoa(su->sin.sin_addr)); 1538 break; 1539 case AF_APPLETALK: 1540 (void) printf("%s: atalk %s; ", 1541 which, atalk_ntoa(su->sat.sat_addr)); 1542 break; 1543 #ifdef NS 1544 case AF_NS: 1545 (void) printf("%s: xns %s; ", 1546 which, ns_ntoa(su->sns.sns_addr)); 1547 break; 1548 #endif 1549 } 1550 (void) fflush(stdout); 1551 } 1552 1553 /* States*/ 1554 #define VIRGIN 0 1555 #define GOTONE 1 1556 #define GOTTWO 2 1557 /* Inputs */ 1558 #define DIGIT (4*0) 1559 #define END (4*1) 1560 #define DELIM (4*2) 1561 1562 void 1563 sockaddr(addr, sa) 1564 register char *addr; 1565 register struct sockaddr *sa; 1566 { 1567 register char *cp = (char *)sa; 1568 int size = sa->sa_len; 1569 char *cplim = cp + size; 1570 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1571 1572 bzero(cp, size); 1573 cp++; 1574 do { 1575 if ((*addr >= '0') && (*addr <= '9')) { 1576 new = *addr - '0'; 1577 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1578 new = *addr - 'a' + 10; 1579 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1580 new = *addr - 'A' + 10; 1581 } else if (*addr == 0) 1582 state |= END; 1583 else 1584 state |= DELIM; 1585 addr++; 1586 switch (state /* | INPUT */) { 1587 case GOTTWO | DIGIT: 1588 *cp++ = byte; /*FALLTHROUGH*/ 1589 case VIRGIN | DIGIT: 1590 state = GOTONE; byte = new; continue; 1591 case GOTONE | DIGIT: 1592 state = GOTTWO; byte = new + (byte << 4); continue; 1593 default: /* | DELIM */ 1594 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1595 case GOTONE | END: 1596 case GOTTWO | END: 1597 *cp++ = byte; /* FALLTHROUGH */ 1598 case VIRGIN | END: 1599 break; 1600 } 1601 break; 1602 } while (cp < cplim); 1603 sa->sa_len = cp - (char *)sa; 1604 } 1605 1606 int 1607 atalk_aton(const char *text, struct at_addr *addr) 1608 { 1609 u_int net, node; 1610 1611 if (sscanf(text, "%u.%u", &net, &node) != 2 1612 || net > 0xffff || node > 0xff) 1613 return(0); 1614 addr->s_net = htons(net); 1615 addr->s_node = node; 1616 return(1); 1617 } 1618 1619 char * 1620 atalk_ntoa(struct at_addr at) 1621 { 1622 static char buf[20]; 1623 1624 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1625 return(buf); 1626 } 1627 1628 #ifdef INET6 1629 char * 1630 inet6_ntoa(struct sockaddr *sa) 1631 { 1632 char *cp; 1633 struct sockaddr_in6 *sin6; 1634 int error = -1, gap; 1635 1636 cp = NULL; 1637 sin6 = (struct sockaddr_in6 *)sa; 1638 gap = sizeof(struct sockaddr_in6) - sin6->sin6_len; 1639 if (gap > 0) 1640 bzero((char *)(sin6) + sin6->sin6_len, gap); 1641 1642 /* XXX: embedded link local addr check */ 1643 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) && 1644 *(u_short *)&sin6->sin6_addr.s6_addr[2] != 0) { 1645 u_short index; 1646 1647 index = *(u_short *)&sin6->sin6_addr.s6_addr[2]; 1648 *(u_short *)&sin6->sin6_addr.s6_addr[2] = 0; 1649 if (sin6->sin6_scope_id == 0) 1650 sin6->sin6_scope_id = ntohs(index); 1651 } 1652 1653 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || sa->sa_len < 4) 1654 cp = "default"; 1655 if (cp == 0 && !nflag) 1656 error = getnameinfo(sa, sa->sa_len, name_buf, sizeof(name_buf), 1657 NULL, 0, NI_NAMEREQD); 1658 if (error != 0) 1659 error = getnameinfo(sa, sa->sa_len, name_buf, 1660 sizeof(name_buf), NULL, 0, 1661 NI_NUMERICHOST|NI_WITHSCOPEID); 1662 if (error != 0) 1663 inet_ntop(AF_INET6, &sin6->sin6_addr, name_buf, 1664 sizeof(name_buf)); 1665 1666 return (cp != NULL) ? cp : name_buf; 1667 } 1668 #endif 1669