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 /* wrapper for KAME-special getnameinfo() */ 76 #ifndef NI_WITHSCOPEID 77 #define NI_WITHSCOPEID 0 78 #endif 79 80 struct keytab { 81 char *kt_cp; 82 int kt_i; 83 } keywords[] = { 84 #include "keywords.h" 85 {0, 0} 86 }; 87 88 struct ortentry route; 89 union sockunion { 90 struct sockaddr sa; 91 struct sockaddr_in sin; 92 #ifdef INET6 93 struct sockaddr_in6 sin6; 94 #endif 95 struct sockaddr_at sat; 96 #ifdef NS 97 struct sockaddr_ns sns; 98 #endif 99 struct sockaddr_dl sdl; 100 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 101 102 typedef union sockunion *sup; 103 int pid, rtm_addrs, uid; 104 int s; 105 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 106 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 107 int locking, lockrest, debugonly; 108 struct rt_metrics rt_metrics; 109 u_long rtm_inits; 110 int atalk_aton __P((const char *, struct at_addr *)); 111 char *atalk_ntoa __P((struct at_addr)); 112 #ifdef INET6 113 char *inet6_ntoa __P((struct sockaddr *sa)); 114 #endif 115 char *routename(), *netname(); 116 void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 117 void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 118 int getaddr(), rtmsg(), x25_makemask(); 119 int prefixlen(); 120 extern char *iso_ntoa(); 121 122 void usage __P((const char *)) __dead2; 123 124 #ifdef INET6 125 char name_buf[MAXHOSTNAMELEN * 2 + 1]; /*for getnameinfo()*/ 126 #endif 127 128 void 129 usage(cp) 130 const char *cp; 131 { 132 if (cp) 133 warnx("bad keyword: %s", cp); 134 (void) fprintf(stderr, 135 "usage: route [-dnqtv] command [[modifiers] args]\n"); 136 exit(EX_USAGE); 137 /* NOTREACHED */ 138 } 139 140 #define ROUNDUP(a) \ 141 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 142 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 143 144 int 145 main(argc, argv) 146 int argc; 147 char **argv; 148 { 149 int ch; 150 151 if (argc < 2) 152 usage((char *)NULL); 153 154 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 155 switch(ch) { 156 case 'n': 157 nflag = 1; 158 break; 159 case 'q': 160 qflag = 1; 161 break; 162 case 'v': 163 verbose = 1; 164 break; 165 case 't': 166 tflag = 1; 167 break; 168 case 'd': 169 debugonly = 1; 170 break; 171 case '?': 172 default: 173 usage((char *)NULL); 174 } 175 argc -= optind; 176 argv += optind; 177 178 pid = getpid(); 179 uid = getuid(); 180 if (tflag) 181 s = open("/dev/null", O_WRONLY, 0); 182 else 183 s = socket(PF_ROUTE, SOCK_RAW, 0); 184 if (s < 0) 185 err(EX_OSERR, "socket"); 186 setuid(uid); 187 if (*argv) 188 switch (keyword(*argv)) { 189 case K_GET: 190 uid = 0; 191 /* FALLTHROUGH */ 192 193 case K_CHANGE: 194 case K_ADD: 195 case K_DELETE: 196 newroute(argc, argv); 197 exit(0); 198 /* NOTREACHED */ 199 200 case K_MONITOR: 201 monitor(); 202 /* NOTREACHED */ 203 204 case K_FLUSH: 205 flushroutes(argc, argv); 206 exit(0); 207 /* NOTREACHED */ 208 } 209 usage(*argv); 210 /* NOTREACHED */ 211 } 212 213 /* 214 * Purge all entries in the routing tables not 215 * associated with network interfaces. 216 */ 217 void 218 flushroutes(argc, argv) 219 int argc; 220 char *argv[]; 221 { 222 size_t needed; 223 int mib[6], rlen, seqno; 224 char *buf, *next, *lim; 225 register struct rt_msghdr *rtm; 226 227 if (uid) { 228 errx(EX_NOPERM, "must be root to alter routing table"); 229 } 230 shutdown(s, 0); /* Don't want to read back our messages */ 231 if (argc > 1) { 232 argv++; 233 if (argc == 2 && **argv == '-') 234 switch (keyword(*argv + 1)) { 235 case K_INET: 236 af = AF_INET; 237 break; 238 #ifdef INET6 239 case K_INET6: 240 af = AF_INET6; 241 break; 242 #endif 243 case K_ATALK: 244 af = AF_APPLETALK; 245 break; 246 #ifdef NS 247 case K_XNS: 248 af = AF_NS; 249 break; 250 #endif 251 case K_LINK: 252 af = AF_LINK; 253 break; 254 default: 255 goto bad; 256 } else 257 bad: usage(*argv); 258 } 259 mib[0] = CTL_NET; 260 mib[1] = PF_ROUTE; 261 mib[2] = 0; /* protocol */ 262 mib[3] = 0; /* wildcard address family */ 263 mib[4] = NET_RT_DUMP; 264 mib[5] = 0; /* no flags */ 265 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 266 err(EX_OSERR, "route-sysctl-estimate"); 267 if ((buf = malloc(needed)) == NULL) 268 errx(EX_OSERR, "malloc failed"); 269 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 270 err(EX_OSERR, "route-sysctl-get"); 271 lim = buf + needed; 272 if (verbose) 273 (void) printf("Examining routing table from sysctl\n"); 274 seqno = 0; /* ??? */ 275 for (next = buf; next < lim; next += rtm->rtm_msglen) { 276 rtm = (struct rt_msghdr *)next; 277 if (verbose) 278 print_rtmsg(rtm, rtm->rtm_msglen); 279 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 280 continue; 281 if (af) { 282 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 283 284 if (sa->sa_family != af) 285 continue; 286 } 287 if (debugonly) 288 continue; 289 rtm->rtm_type = RTM_DELETE; 290 rtm->rtm_seq = seqno; 291 rlen = write(s, next, rtm->rtm_msglen); 292 if (rlen < (int)rtm->rtm_msglen) { 293 warn("write to routing socket"); 294 (void) printf("got only %d for rlen\n", rlen); 295 break; 296 } 297 seqno++; 298 if (qflag) 299 continue; 300 if (verbose) 301 print_rtmsg(rtm, rlen); 302 else { 303 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 304 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 305 routename(sa) : netname(sa)); 306 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 307 (void) printf("%-20.20s ", routename(sa)); 308 (void) printf("done\n"); 309 } 310 } 311 } 312 313 char * 314 routename(sa) 315 struct sockaddr *sa; 316 { 317 register char *cp; 318 static char line[MAXHOSTNAMELEN + 1]; 319 struct hostent *hp; 320 static char domain[MAXHOSTNAMELEN + 1]; 321 static int first = 1; 322 #ifdef NS 323 char *ns_print(); 324 #endif 325 326 if (first) { 327 first = 0; 328 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 329 (cp = index(domain, '.'))) { 330 domain[MAXHOSTNAMELEN] = '\0'; 331 (void) strcpy(domain, cp + 1); 332 } else 333 domain[0] = 0; 334 } 335 336 if (sa->sa_len == 0) 337 strcpy(line, "default"); 338 else switch (sa->sa_family) { 339 340 case AF_INET: 341 { struct in_addr in; 342 in = ((struct sockaddr_in *)sa)->sin_addr; 343 344 cp = 0; 345 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 346 cp = "default"; 347 if (cp == 0 && !nflag) { 348 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 349 AF_INET); 350 if (hp) { 351 if ((cp = index(hp->h_name, '.')) && 352 !strcmp(cp + 1, domain)) 353 *cp = 0; 354 cp = hp->h_name; 355 } 356 } 357 if (cp) { 358 strncpy(line, cp, sizeof(line) - 1); 359 line[sizeof(line) - 1] = '\0'; 360 } else { 361 /* XXX - why not inet_ntoa()? */ 362 #define C(x) (unsigned)((x) & 0xff) 363 in.s_addr = ntohl(in.s_addr); 364 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 365 C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr)); 366 } 367 break; 368 } 369 370 #ifdef INET6 371 case AF_INET6: 372 (void) snprintf(line, sizeof(line), "%s", inet6_ntoa(sa)); 373 break; 374 #endif 375 376 case AF_APPLETALK: 377 (void) snprintf(line, sizeof(line), "atalk %s", 378 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 379 break; 380 381 #ifdef NS 382 case AF_NS: 383 return (ns_print((struct sockaddr_ns *)sa)); 384 #endif 385 386 case AF_LINK: 387 return (link_ntoa((struct sockaddr_dl *)sa)); 388 389 default: 390 { u_short *s = (u_short *)sa; 391 u_short *slim = s + ((sa->sa_len + 1) >> 1); 392 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 393 char *cpe = line + sizeof(line); 394 395 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 396 cp += snprintf(cp, cpe - cp, " %x", *s); 397 break; 398 } 399 } 400 return (line); 401 } 402 403 /* 404 * Return the name of the network whose address is given. 405 * The address is assumed to be that of a net or subnet, not a host. 406 */ 407 char * 408 netname(sa) 409 struct sockaddr *sa; 410 { 411 char *cp = 0; 412 static char line[MAXHOSTNAMELEN + 1]; 413 struct netent *np = 0; 414 u_long net, mask; 415 register u_long i; 416 int subnetshift; 417 #ifdef NS 418 char *ns_print(); 419 #endif 420 421 switch (sa->sa_family) { 422 423 case AF_INET: 424 { struct in_addr in; 425 in = ((struct sockaddr_in *)sa)->sin_addr; 426 427 i = in.s_addr = ntohl(in.s_addr); 428 if (in.s_addr == 0) 429 cp = "default"; 430 else if (!nflag) { 431 if (IN_CLASSA(i)) { 432 mask = IN_CLASSA_NET; 433 subnetshift = 8; 434 } else if (IN_CLASSB(i)) { 435 mask = IN_CLASSB_NET; 436 subnetshift = 8; 437 } else { 438 mask = IN_CLASSC_NET; 439 subnetshift = 4; 440 } 441 /* 442 * If there are more bits than the standard mask 443 * would suggest, subnets must be in use. 444 * Guess at the subnet mask, assuming reasonable 445 * width subnet fields. 446 */ 447 while (in.s_addr &~ mask) 448 mask = (long)mask >> subnetshift; 449 net = in.s_addr & mask; 450 while ((mask & 1) == 0) 451 mask >>= 1, net >>= 1; 452 np = getnetbyaddr(net, AF_INET); 453 if (np) 454 cp = np->n_name; 455 } 456 if (cp) 457 strncpy(line, cp, sizeof(line)); 458 else if ((in.s_addr & 0xffffff) == 0) 459 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 460 else if ((in.s_addr & 0xffff) == 0) 461 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 462 C(in.s_addr >> 16)); 463 else if ((in.s_addr & 0xff) == 0) 464 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 465 C(in.s_addr >> 16), C(in.s_addr >> 8)); 466 else 467 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 468 C(in.s_addr >> 16), C(in.s_addr >> 8), 469 C(in.s_addr)); 470 break; 471 } 472 473 #ifdef INET6 474 case AF_INET6: 475 (void) snprintf(line, sizeof(line), "%s", inet6_ntoa(sa)); 476 break; 477 #endif 478 479 case AF_APPLETALK: 480 (void) snprintf(line, sizeof(line), "atalk %s", 481 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 482 break; 483 484 #ifdef NS 485 case AF_NS: 486 return (ns_print((struct sockaddr_ns *)sa)); 487 break; 488 #endif 489 490 case AF_LINK: 491 return (link_ntoa((struct sockaddr_dl *)sa)); 492 493 494 default: 495 { u_short *s = (u_short *)sa->sa_data; 496 u_short *slim = s + ((sa->sa_len + 1)>>1); 497 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 498 char *cpe = line + sizeof(line); 499 500 while (s < slim && cp < cpe) 501 cp += snprintf(cp, cpe - cp, " %x", *s++); 502 break; 503 } 504 } 505 return (line); 506 } 507 508 void 509 set_metric(value, key) 510 char *value; 511 int key; 512 { 513 int flag = 0; 514 u_long noval, *valp = &noval; 515 516 switch (key) { 517 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 518 caseof(K_MTU, RTV_MTU, rmx_mtu); 519 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 520 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 521 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 522 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 523 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 524 caseof(K_RTT, RTV_RTT, rmx_rtt); 525 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 526 } 527 rtm_inits |= flag; 528 if (lockrest || locking) 529 rt_metrics.rmx_locks |= flag; 530 if (locking) 531 locking = 0; 532 *valp = atoi(value); 533 } 534 535 void 536 newroute(argc, argv) 537 int argc; 538 register char **argv; 539 { 540 char *cmd, *dest = "", *gateway = "", *err; 541 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 542 int key; 543 struct hostent *hp = 0; 544 545 if (uid) { 546 errx(EX_NOPERM, "must be root to alter routing table"); 547 } 548 cmd = argv[0]; 549 if (*cmd != 'g') 550 shutdown(s, 0); /* Don't want to read back our messages */ 551 while (--argc > 0) { 552 if (**(++argv)== '-') { 553 switch (key = keyword(1 + *argv)) { 554 case K_LINK: 555 af = AF_LINK; 556 aflen = sizeof(struct sockaddr_dl); 557 break; 558 case K_INET: 559 af = AF_INET; 560 aflen = sizeof(struct sockaddr_in); 561 break; 562 #ifdef INET6 563 case K_INET6: 564 af = AF_INET6; 565 aflen = sizeof(struct sockaddr_in6); 566 break; 567 #endif 568 case K_ATALK: 569 af = AF_APPLETALK; 570 aflen = sizeof(struct sockaddr_at); 571 break; 572 case K_SA: 573 af = PF_ROUTE; 574 aflen = sizeof(union sockunion); 575 break; 576 #ifdef NS 577 case K_XNS: 578 af = AF_NS; 579 aflen = sizeof(struct sockaddr_ns); 580 break; 581 #endif 582 case K_IFACE: 583 case K_INTERFACE: 584 iflag++; 585 break; 586 case K_NOSTATIC: 587 flags &= ~RTF_STATIC; 588 break; 589 case K_LLINFO: 590 flags |= RTF_LLINFO; 591 break; 592 case K_LOCK: 593 locking = 1; 594 break; 595 case K_LOCKREST: 596 lockrest = 1; 597 break; 598 case K_HOST: 599 forcehost++; 600 break; 601 case K_REJECT: 602 flags |= RTF_REJECT; 603 break; 604 case K_BLACKHOLE: 605 flags |= RTF_BLACKHOLE; 606 break; 607 case K_PROTO1: 608 flags |= RTF_PROTO1; 609 break; 610 case K_PROTO2: 611 flags |= RTF_PROTO2; 612 break; 613 case K_CLONING: 614 flags |= RTF_CLONING; 615 break; 616 case K_XRESOLVE: 617 flags |= RTF_XRESOLVE; 618 break; 619 case K_STATIC: 620 flags |= RTF_STATIC; 621 break; 622 case K_IFA: 623 if (!--argc) 624 usage((char *)NULL); 625 (void) getaddr(RTA_IFA, *++argv, 0); 626 break; 627 case K_IFP: 628 if (!--argc) 629 usage((char *)NULL); 630 (void) getaddr(RTA_IFP, *++argv, 0); 631 break; 632 case K_GENMASK: 633 if (!--argc) 634 usage((char *)NULL); 635 (void) getaddr(RTA_GENMASK, *++argv, 0); 636 break; 637 case K_GATEWAY: 638 if (!--argc) 639 usage((char *)NULL); 640 (void) getaddr(RTA_GATEWAY, *++argv, 0); 641 break; 642 case K_DST: 643 if (!--argc) 644 usage((char *)NULL); 645 ishost = getaddr(RTA_DST, *++argv, &hp); 646 dest = *argv; 647 break; 648 case K_NETMASK: 649 if (!--argc) 650 usage((char *)NULL); 651 (void) getaddr(RTA_NETMASK, *++argv, 0); 652 /* FALLTHROUGH */ 653 case K_NET: 654 forcenet++; 655 break; 656 case K_PREFIXLEN: 657 if (!--argc) 658 usage((char *)NULL); 659 if (prefixlen(*++argv) == -1) { 660 forcenet = 0; 661 ishost = 1; 662 } else { 663 forcenet = 1; 664 ishost = 0; 665 } 666 break; 667 case K_MTU: 668 case K_HOPCOUNT: 669 case K_EXPIRE: 670 case K_RECVPIPE: 671 case K_SENDPIPE: 672 case K_SSTHRESH: 673 case K_RTT: 674 case K_RTTVAR: 675 if (!--argc) 676 usage((char *)NULL); 677 set_metric(*++argv, key); 678 break; 679 default: 680 usage(1+*argv); 681 } 682 } else { 683 if ((rtm_addrs & RTA_DST) == 0) { 684 dest = *argv; 685 ishost = getaddr(RTA_DST, *argv, &hp); 686 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 687 gateway = *argv; 688 (void) getaddr(RTA_GATEWAY, *argv, &hp); 689 } else { 690 (void) getaddr(RTA_NETMASK, *argv, 0); 691 } 692 } 693 } 694 if (forcehost) { 695 ishost = 1; 696 #ifdef INET6 697 if (af == AF_INET6) { 698 rtm_addrs &= ~RTA_NETMASK; 699 memset((void *)&so_mask, 0, sizeof(so_mask)); 700 } 701 #endif 702 } 703 if (forcenet) 704 ishost = 0; 705 flags |= RTF_UP; 706 if (ishost) 707 flags |= RTF_HOST; 708 if (iflag == 0) 709 flags |= RTF_GATEWAY; 710 for (attempts = 1; ; attempts++) { 711 errno = 0; 712 if ((ret = rtmsg(*cmd, flags)) == 0) 713 break; 714 if (errno != ENETUNREACH && errno != ESRCH) 715 break; 716 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 717 hp->h_addr_list++; 718 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr, 719 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 720 } else 721 break; 722 } 723 if (*cmd == 'g') 724 exit(0); 725 oerrno = errno; 726 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 727 if (*gateway) { 728 (void) printf(": gateway %s", gateway); 729 if (attempts > 1 && ret == 0 && af == AF_INET) 730 (void) printf(" (%s)", 731 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 732 } 733 if (ret == 0) 734 (void) printf("\n"); 735 else { 736 switch (oerrno) { 737 case ESRCH: 738 err = "not in table"; 739 break; 740 case EBUSY: 741 err = "entry in use"; 742 break; 743 case ENOBUFS: 744 err = "routing table overflow"; 745 break; 746 default: 747 err = strerror(oerrno); 748 break; 749 } 750 (void) printf(": %s\n", err); 751 } 752 } 753 754 void 755 inet_makenetandmask(net, sin, bits) 756 u_long net, bits; 757 register struct sockaddr_in *sin; 758 { 759 u_long addr, mask = 0; 760 register char *cp; 761 762 rtm_addrs |= RTA_NETMASK; 763 if (net == 0) 764 mask = addr = 0; 765 else if (bits) { 766 addr = net; 767 mask = 0xffffffff << (32 - bits); 768 } else if (net < 128) { 769 addr = net << IN_CLASSA_NSHIFT; 770 mask = IN_CLASSA_NET; 771 } else if (net < 65536) { 772 addr = net << IN_CLASSB_NSHIFT; 773 mask = IN_CLASSB_NET; 774 } else if (net < 16777216L) { 775 addr = net << IN_CLASSC_NSHIFT; 776 mask = IN_CLASSC_NET; 777 } else { 778 addr = net; 779 if ((addr & IN_CLASSA_HOST) == 0) 780 mask = IN_CLASSA_NET; 781 else if ((addr & IN_CLASSB_HOST) == 0) 782 mask = IN_CLASSB_NET; 783 else if ((addr & IN_CLASSC_HOST) == 0) 784 mask = IN_CLASSC_NET; 785 else 786 mask = -1; 787 } 788 sin->sin_addr.s_addr = htonl(addr); 789 sin = &so_mask.sin; 790 sin->sin_addr.s_addr = htonl(mask); 791 sin->sin_len = 0; 792 sin->sin_family = 0; 793 cp = (char *)(&sin->sin_addr + 1); 794 while (*--cp == 0 && cp > (char *)sin) 795 ; 796 sin->sin_len = 1 + cp - (char *)sin; 797 } 798 799 /* 800 * Interpret an argument as a network address of some kind, 801 * returning 1 if a host address, 0 if a network address. 802 */ 803 int 804 getaddr(which, s, hpp) 805 int which; 806 char *s; 807 struct hostent **hpp; 808 { 809 register sup su; 810 struct hostent *hp; 811 struct netent *np; 812 u_long val; 813 char *q,qs; 814 int afamily; /* local copy of af so we can change it */ 815 816 if (af == 0) { 817 af = AF_INET; 818 aflen = sizeof(struct sockaddr_in); 819 } 820 afamily = af; 821 rtm_addrs |= which; 822 switch (which) { 823 case RTA_DST: 824 su = &so_dst; 825 break; 826 case RTA_GATEWAY: 827 su = &so_gate; 828 if (iflag) { 829 #define MAX_IFACES 400 830 int sock; 831 struct ifreq iflist[MAX_IFACES]; 832 struct ifconf ifconf; 833 struct ifreq *ifr, *ifr_end; 834 struct sockaddr_dl *dl, *sdl = NULL; 835 836 /* Get socket */ 837 if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0) 838 err(1, "socket"); 839 840 /* Get interface list */ 841 ifconf.ifc_req = iflist; 842 ifconf.ifc_len = sizeof(iflist); 843 if (ioctl(sock, SIOCGIFCONF, &ifconf) < 0) 844 err(1, "ioctl(SIOCGIFCONF)"); 845 close(sock); 846 847 /* Look for this interface in the list */ 848 for (ifr = ifconf.ifc_req, 849 ifr_end = (struct ifreq *) 850 (ifconf.ifc_buf + ifconf.ifc_len); 851 ifr < ifr_end; 852 ifr = (struct ifreq *) ((char *) &ifr->ifr_addr 853 + MAX(ifr->ifr_addr.sa_len, 854 sizeof(ifr->ifr_addr)))) { 855 dl = (struct sockaddr_dl *)&ifr->ifr_addr; 856 if (ifr->ifr_addr.sa_family == AF_LINK 857 && (ifr->ifr_flags & IFF_POINTOPOINT) 858 && !strncmp(s, dl->sdl_data, dl->sdl_nlen) 859 && s[dl->sdl_nlen] == 0) { 860 sdl = dl; 861 break; 862 } 863 } 864 865 /* If we found it, then use it */ 866 if (sdl) { 867 su->sdl = *sdl; 868 return(1); 869 } 870 } 871 break; 872 case RTA_NETMASK: 873 su = &so_mask; 874 break; 875 case RTA_GENMASK: 876 su = &so_genmask; 877 break; 878 case RTA_IFP: 879 su = &so_ifp; 880 afamily = AF_LINK; 881 break; 882 case RTA_IFA: 883 su = &so_ifa; 884 break; 885 default: 886 usage("internal error"); 887 /*NOTREACHED*/ 888 } 889 su->sa.sa_len = aflen; 890 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 891 if (strcmp(s, "default") == 0) { 892 /* 893 * Default is net 0.0.0.0/0 894 */ 895 switch (which) { 896 case RTA_DST: 897 forcenet++; 898 /* bzero(su, sizeof(*su)); *//* for readability */ 899 (void) getaddr(RTA_NETMASK, s, 0); 900 break; 901 case RTA_NETMASK: 902 case RTA_GENMASK: 903 /* bzero(su, sizeof(*su)); *//* for readability */ 904 } 905 return (0); 906 } 907 switch (afamily) { 908 #ifdef INET6 909 case AF_INET6: 910 { 911 struct addrinfo hints, *res; 912 int error; 913 914 bzero(&hints, sizeof(struct addrinfo)); 915 hints.ai_family = AF_INET6; 916 917 error = getaddrinfo(s, NULL, &hints, &res); 918 if (error != 0) { 919 (void) fprintf(stderr, "%s: bad value\n", 920 gai_strerror(error)); 921 if (error == EAI_SYSTEM) 922 (void) fprintf(stderr, "%s\n", 923 strerror(errno)); 924 exit(1); 925 } 926 bcopy(res->ai_addr, &su->sa, res->ai_addrlen); 927 /* XXX: embedded link local addr check */ 928 if (IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr)) 929 *(u_short *)&su->sin6.sin6_addr.s6_addr[2] = 930 ntohs(su->sin6.sin6_scope_id); 931 su->sin6.sin6_scope_id = 0; 932 return 0; 933 } 934 #endif 935 936 #ifdef NS 937 case AF_NS: 938 if (which == RTA_DST) { 939 extern short ns_bh[3]; 940 struct sockaddr_ns *sms = &(so_mask.sns); 941 bzero((char *)sms, sizeof(*sms)); 942 sms->sns_family = 0; 943 sms->sns_len = 6; 944 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 945 rtm_addrs |= RTA_NETMASK; 946 } 947 su->sns.sns_addr = ns_addr(s); 948 return (!ns_nullhost(su->sns.sns_addr)); 949 #endif 950 951 952 case AF_APPLETALK: 953 if (!atalk_aton(s, &su->sat.sat_addr)) 954 errx(EX_NOHOST, "bad address: %s", s); 955 rtm_addrs |= RTA_NETMASK; 956 return(forcehost || su->sat.sat_addr.s_node != 0); 957 958 case AF_LINK: 959 link_addr(s, &su->sdl); 960 return (1); 961 962 963 case PF_ROUTE: 964 su->sa.sa_len = sizeof(*su); 965 sockaddr(s, &su->sa); 966 return (1); 967 968 case AF_INET: 969 default: 970 break; 971 } 972 973 if (hpp == NULL) 974 hpp = &hp; 975 *hpp = NULL; 976 977 q = strchr(s,'/'); 978 if (q && which == RTA_DST) { 979 qs = *q; 980 *q = '\0'; 981 if (((val = inet_addr(s)) != INADDR_NONE)) { 982 inet_makenetandmask( 983 htonl(val), &su->sin, strtoul(q+1, 0, 0)); 984 return (0); 985 } 986 *q =qs; 987 } 988 if (((val = inet_addr(s)) != INADDR_NONE) && 989 (which != RTA_DST || forcenet == 0)) { 990 su->sin.sin_addr.s_addr = val; 991 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 992 return (1); 993 else { 994 val = ntohl(val); 995 goto netdone; 996 } 997 } 998 if ((val = inet_network(s)) != INADDR_NONE || 999 (forcehost == 0 && (np = getnetbyname(s)) != NULL && 1000 (val = np->n_net) != 0)) { 1001 netdone: 1002 if (which == RTA_DST) 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("got 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 return; 1470 (void) printf("\nsockaddrs: "); 1471 bprintf(stdout, addrs, addrnames); 1472 (void) putchar('\n'); 1473 for (i = 1; i; i <<= 1) 1474 if (i & addrs) { 1475 sa = (struct sockaddr *)cp; 1476 (void) printf(" %s", routename(sa)); 1477 ADVANCE(cp, sa); 1478 } 1479 (void) putchar('\n'); 1480 (void) fflush(stdout); 1481 } 1482 1483 void 1484 bprintf(fp, b, s) 1485 register FILE *fp; 1486 register int b; 1487 register u_char *s; 1488 { 1489 register int i; 1490 int gotsome = 0; 1491 1492 if (b == 0) 1493 return; 1494 while ((i = *s++) != 0) { 1495 if (b & (1 << (i-1))) { 1496 if (gotsome == 0) 1497 i = '<'; 1498 else 1499 i = ','; 1500 (void) putc(i, fp); 1501 gotsome = 1; 1502 for (; (i = *s) > 32; s++) 1503 (void) putc(i, fp); 1504 } else 1505 while (*s > 32) 1506 s++; 1507 } 1508 if (gotsome) 1509 (void) putc('>', fp); 1510 } 1511 1512 int 1513 keyword(cp) 1514 char *cp; 1515 { 1516 register struct keytab *kt = keywords; 1517 1518 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1519 kt++; 1520 return kt->kt_i; 1521 } 1522 1523 void 1524 sodump(su, which) 1525 register sup su; 1526 char *which; 1527 { 1528 switch (su->sa.sa_family) { 1529 case AF_LINK: 1530 (void) printf("%s: link %s; ", 1531 which, link_ntoa(&su->sdl)); 1532 break; 1533 case AF_INET: 1534 (void) printf("%s: inet %s; ", 1535 which, inet_ntoa(su->sin.sin_addr)); 1536 break; 1537 case AF_APPLETALK: 1538 (void) printf("%s: atalk %s; ", 1539 which, atalk_ntoa(su->sat.sat_addr)); 1540 break; 1541 #ifdef NS 1542 case AF_NS: 1543 (void) printf("%s: xns %s; ", 1544 which, ns_ntoa(su->sns.sns_addr)); 1545 break; 1546 #endif 1547 } 1548 (void) fflush(stdout); 1549 } 1550 1551 /* States*/ 1552 #define VIRGIN 0 1553 #define GOTONE 1 1554 #define GOTTWO 2 1555 /* Inputs */ 1556 #define DIGIT (4*0) 1557 #define END (4*1) 1558 #define DELIM (4*2) 1559 1560 void 1561 sockaddr(addr, sa) 1562 register char *addr; 1563 register struct sockaddr *sa; 1564 { 1565 register char *cp = (char *)sa; 1566 int size = sa->sa_len; 1567 char *cplim = cp + size; 1568 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1569 1570 bzero(cp, size); 1571 cp++; 1572 do { 1573 if ((*addr >= '0') && (*addr <= '9')) { 1574 new = *addr - '0'; 1575 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1576 new = *addr - 'a' + 10; 1577 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1578 new = *addr - 'A' + 10; 1579 } else if (*addr == 0) 1580 state |= END; 1581 else 1582 state |= DELIM; 1583 addr++; 1584 switch (state /* | INPUT */) { 1585 case GOTTWO | DIGIT: 1586 *cp++ = byte; /*FALLTHROUGH*/ 1587 case VIRGIN | DIGIT: 1588 state = GOTONE; byte = new; continue; 1589 case GOTONE | DIGIT: 1590 state = GOTTWO; byte = new + (byte << 4); continue; 1591 default: /* | DELIM */ 1592 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1593 case GOTONE | END: 1594 case GOTTWO | END: 1595 *cp++ = byte; /* FALLTHROUGH */ 1596 case VIRGIN | END: 1597 break; 1598 } 1599 break; 1600 } while (cp < cplim); 1601 sa->sa_len = cp - (char *)sa; 1602 } 1603 1604 int 1605 atalk_aton(const char *text, struct at_addr *addr) 1606 { 1607 u_int net, node; 1608 1609 if (sscanf(text, "%u.%u", &net, &node) != 2 1610 || net > 0xffff || node > 0xff) 1611 return(0); 1612 addr->s_net = htons(net); 1613 addr->s_node = node; 1614 return(1); 1615 } 1616 1617 char * 1618 atalk_ntoa(struct at_addr at) 1619 { 1620 static char buf[20]; 1621 1622 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1623 return(buf); 1624 } 1625 1626 #ifdef INET6 1627 char * 1628 inet6_ntoa(struct sockaddr *sa) 1629 { 1630 char *cp; 1631 struct sockaddr_in6 *sin6; 1632 int error = -1, gap; 1633 1634 cp = NULL; 1635 sin6 = (struct sockaddr_in6 *)sa; 1636 gap = sizeof(struct sockaddr_in6) - sin6->sin6_len; 1637 if (gap > 0) 1638 bzero((char *)(sin6) + sin6->sin6_len, gap); 1639 1640 /* XXX: embedded link local addr check */ 1641 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) && 1642 *(u_short *)&sin6->sin6_addr.s6_addr[2] != 0) { 1643 u_short index; 1644 1645 index = *(u_short *)&sin6->sin6_addr.s6_addr[2]; 1646 *(u_short *)&sin6->sin6_addr.s6_addr[2] = 0; 1647 if (sin6->sin6_scope_id == 0) 1648 sin6->sin6_scope_id = ntohs(index); 1649 } 1650 1651 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || sa->sa_len < 4) 1652 cp = "default"; 1653 if (cp == 0 && !nflag) 1654 error = getnameinfo(sa, sa->sa_len, name_buf, sizeof(name_buf), 1655 NULL, 0, NI_NAMEREQD); 1656 if (error != 0) 1657 error = getnameinfo(sa, sa->sa_len, name_buf, 1658 sizeof(name_buf), NULL, 0, 1659 NI_NUMERICHOST|NI_WITHSCOPEID); 1660 if (error != 0) 1661 inet_ntop(AF_INET6, &sin6->sin6_addr, name_buf, 1662 sizeof(name_buf)); 1663 1664 return (cp != NULL) ? cp : name_buf; 1665 } 1666 #endif 1667