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 return 0; 932 } 933 #endif 934 935 #ifdef NS 936 case AF_NS: 937 if (which == RTA_DST) { 938 extern short ns_bh[3]; 939 struct sockaddr_ns *sms = &(so_mask.sns); 940 bzero((char *)sms, sizeof(*sms)); 941 sms->sns_family = 0; 942 sms->sns_len = 6; 943 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 944 rtm_addrs |= RTA_NETMASK; 945 } 946 su->sns.sns_addr = ns_addr(s); 947 return (!ns_nullhost(su->sns.sns_addr)); 948 #endif 949 950 951 case AF_APPLETALK: 952 if (!atalk_aton(s, &su->sat.sat_addr)) 953 errx(EX_NOHOST, "bad address: %s", s); 954 rtm_addrs |= RTA_NETMASK; 955 return(forcehost || su->sat.sat_addr.s_node != 0); 956 957 case AF_LINK: 958 link_addr(s, &su->sdl); 959 return (1); 960 961 962 case PF_ROUTE: 963 su->sa.sa_len = sizeof(*su); 964 sockaddr(s, &su->sa); 965 return (1); 966 967 case AF_INET: 968 default: 969 break; 970 } 971 972 if (hpp == NULL) 973 hpp = &hp; 974 *hpp = NULL; 975 976 q = strchr(s,'/'); 977 if (q && which == RTA_DST) { 978 qs = *q; 979 *q = '\0'; 980 if (((val = inet_addr(s)) != INADDR_NONE)) { 981 inet_makenetandmask( 982 htonl(val), &su->sin, strtoul(q+1, 0, 0)); 983 return (0); 984 } 985 *q =qs; 986 } 987 if (((val = inet_addr(s)) != INADDR_NONE) && 988 (which != RTA_DST || forcenet == 0)) { 989 su->sin.sin_addr.s_addr = val; 990 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 991 return (1); 992 else { 993 val = ntohl(val); 994 goto netdone; 995 } 996 } 997 if ((val = inet_network(s)) != INADDR_NONE || 998 (forcehost == 0 && (np = getnetbyname(s)) != NULL && 999 (val = np->n_net) != 0)) { 1000 netdone: 1001 if (which == RTA_DST) 1002 inet_makenetandmask(val, &su->sin, 0); 1003 return (0); 1004 } 1005 hp = gethostbyname(s); 1006 if (hp) { 1007 *hpp = hp; 1008 su->sin.sin_family = hp->h_addrtype; 1009 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, 1010 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 1011 return (1); 1012 } 1013 errx(EX_NOHOST, "bad address: %s", s); 1014 } 1015 1016 int 1017 prefixlen(s) 1018 char *s; 1019 { 1020 int len = atoi(s), q, r; 1021 int max; 1022 char *p; 1023 1024 rtm_addrs |= RTA_NETMASK; 1025 switch (af) { 1026 #ifdef INET6 1027 case AF_INET6: 1028 max = 128; 1029 p = (char *)&so_mask.sin6.sin6_addr; 1030 break; 1031 #endif 1032 case AF_INET: 1033 max = 32; 1034 p = (char *)&so_mask.sin.sin_addr; 1035 break; 1036 default: 1037 (void) fprintf(stderr, "prefixlen not supported in this af\n"); 1038 exit(1); 1039 /*NOTREACHED*/ 1040 } 1041 1042 if (len < 0 || max < len) { 1043 (void) fprintf(stderr, "%s: bad value\n", s); 1044 exit(1); 1045 } 1046 1047 q = len >> 3; 1048 r = len & 7; 1049 so_mask.sa.sa_family = af; 1050 so_mask.sa.sa_len = aflen; 1051 memset((void *)p, 0, max / 8); 1052 if (q > 0) 1053 memset((void *)p, 0xff, q); 1054 if (r > 0) 1055 *((u_char *)p + q) = (0xff00 >> r) & 0xff; 1056 if (len == max) 1057 return -1; 1058 else 1059 return len; 1060 } 1061 1062 #ifdef NS 1063 short ns_nullh[] = {0,0,0}; 1064 short ns_bh[] = {-1,-1,-1}; 1065 1066 char * 1067 ns_print(sns) 1068 struct sockaddr_ns *sns; 1069 { 1070 struct ns_addr work; 1071 union { union ns_net net_e; u_long long_e; } net; 1072 u_short port; 1073 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 1074 char *host = ""; 1075 register char *p; 1076 register u_char *q; 1077 1078 work = sns->sns_addr; 1079 port = ntohs(work.x_port); 1080 work.x_port = 0; 1081 net.net_e = work.x_net; 1082 if (ns_nullhost(work) && net.long_e == 0) { 1083 if (!port) 1084 return ("*.*"); 1085 (void) sprintf(mybuf, "*.%XH", port); 1086 return (mybuf); 1087 } 1088 1089 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0) 1090 host = "any"; 1091 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0) 1092 host = "*"; 1093 else { 1094 q = work.x_host.c_host; 1095 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 1096 q[0], q[1], q[2], q[3], q[4], q[5]); 1097 for (p = chost; *p == '0' && p < chost + 12; p++) 1098 /* void */; 1099 host = p; 1100 } 1101 if (port) 1102 (void) sprintf(cport, ".%XH", htons(port)); 1103 else 1104 *cport = 0; 1105 1106 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 1107 (unsigned long)ntohl(net.long_e), 1108 host, cport); 1109 return (mybuf); 1110 } 1111 #endif 1112 1113 void 1114 interfaces() 1115 { 1116 size_t needed; 1117 int mib[6]; 1118 char *buf, *lim, *next; 1119 register struct rt_msghdr *rtm; 1120 1121 mib[0] = CTL_NET; 1122 mib[1] = PF_ROUTE; 1123 mib[2] = 0; /* protocol */ 1124 mib[3] = 0; /* wildcard address family */ 1125 mib[4] = NET_RT_IFLIST; 1126 mib[5] = 0; /* no flags */ 1127 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1128 err(EX_OSERR, "route-sysctl-estimate"); 1129 if ((buf = malloc(needed)) == NULL) 1130 errx(EX_OSERR, "malloc failed"); 1131 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1132 err(EX_OSERR, "actual retrieval of interface table"); 1133 lim = buf + needed; 1134 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1135 rtm = (struct rt_msghdr *)next; 1136 print_rtmsg(rtm, rtm->rtm_msglen); 1137 } 1138 } 1139 1140 void 1141 monitor() 1142 { 1143 int n; 1144 char msg[2048]; 1145 1146 verbose = 1; 1147 if (debugonly) { 1148 interfaces(); 1149 exit(0); 1150 } 1151 for(;;) { 1152 time_t now; 1153 n = read(s, msg, 2048); 1154 now = time(NULL); 1155 (void) printf("got message of size %d on %s", n, ctime(&now)); 1156 print_rtmsg((struct rt_msghdr *)msg, n); 1157 } 1158 } 1159 1160 struct { 1161 struct rt_msghdr m_rtm; 1162 char m_space[512]; 1163 } m_rtmsg; 1164 1165 int 1166 rtmsg(cmd, flags) 1167 int cmd, flags; 1168 { 1169 static int seq; 1170 int rlen; 1171 register char *cp = m_rtmsg.m_space; 1172 register int l; 1173 1174 #define NEXTADDR(w, u) \ 1175 if (rtm_addrs & (w)) {\ 1176 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 1177 if (verbose) sodump(&(u),"u");\ 1178 } 1179 1180 errno = 0; 1181 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 1182 if (cmd == 'a') 1183 cmd = RTM_ADD; 1184 else if (cmd == 'c') 1185 cmd = RTM_CHANGE; 1186 else if (cmd == 'g') { 1187 cmd = RTM_GET; 1188 if (so_ifp.sa.sa_family == 0) { 1189 so_ifp.sa.sa_family = AF_LINK; 1190 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1191 rtm_addrs |= RTA_IFP; 1192 } 1193 } else 1194 cmd = RTM_DELETE; 1195 #define rtm m_rtmsg.m_rtm 1196 rtm.rtm_type = cmd; 1197 rtm.rtm_flags = flags; 1198 rtm.rtm_version = RTM_VERSION; 1199 rtm.rtm_seq = ++seq; 1200 rtm.rtm_addrs = rtm_addrs; 1201 rtm.rtm_rmx = rt_metrics; 1202 rtm.rtm_inits = rtm_inits; 1203 1204 if (rtm_addrs & RTA_NETMASK) 1205 mask_addr(); 1206 NEXTADDR(RTA_DST, so_dst); 1207 NEXTADDR(RTA_GATEWAY, so_gate); 1208 NEXTADDR(RTA_NETMASK, so_mask); 1209 NEXTADDR(RTA_GENMASK, so_genmask); 1210 NEXTADDR(RTA_IFP, so_ifp); 1211 NEXTADDR(RTA_IFA, so_ifa); 1212 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1213 if (verbose) 1214 print_rtmsg(&rtm, l); 1215 if (debugonly) 1216 return (0); 1217 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1218 warn("writing to routing socket"); 1219 return (-1); 1220 } 1221 if (cmd == RTM_GET) { 1222 do { 1223 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1224 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1225 if (l < 0) 1226 warn("read from routing socket"); 1227 else 1228 print_getmsg(&rtm, l); 1229 } 1230 #undef rtm 1231 return (0); 1232 } 1233 1234 void 1235 mask_addr() 1236 { 1237 int olen = so_mask.sa.sa_len; 1238 register char *cp1 = olen + (char *)&so_mask, *cp2; 1239 1240 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1241 if (*--cp1 != 0) { 1242 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1243 break; 1244 } 1245 if ((rtm_addrs & RTA_DST) == 0) 1246 return; 1247 switch (so_dst.sa.sa_family) { 1248 #ifdef NS 1249 case AF_NS: 1250 #endif 1251 case AF_INET: 1252 #ifdef INET6 1253 case AF_INET6: 1254 #endif 1255 case AF_APPLETALK: 1256 case 0: 1257 return; 1258 } 1259 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1260 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1261 while (cp2 > cp1) 1262 *--cp2 = 0; 1263 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1264 while (cp1 > so_dst.sa.sa_data) 1265 *--cp1 &= *--cp2; 1266 } 1267 1268 char *msgtypes[] = { 1269 "", 1270 "RTM_ADD: Add Route", 1271 "RTM_DELETE: Delete Route", 1272 "RTM_CHANGE: Change Metrics or flags", 1273 "RTM_GET: Report Metrics", 1274 "RTM_LOSING: Kernel Suspects Partitioning", 1275 "RTM_REDIRECT: Told to use different route", 1276 "RTM_MISS: Lookup failed on this address", 1277 "RTM_LOCK: fix specified metrics", 1278 "RTM_OLDADD: caused by SIOCADDRT", 1279 "RTM_OLDDEL: caused by SIOCDELRT", 1280 "RTM_RESOLVE: Route created by cloning", 1281 "RTM_NEWADDR: address being added to iface", 1282 "RTM_DELADDR: address being removed from iface", 1283 "RTM_IFINFO: iface status change", 1284 "RTM_NEWMADDR: new multicast group membership on iface", 1285 "RTM_DELMADDR: multicast group membership removed from iface", 1286 0, 1287 }; 1288 1289 char metricnames[] = 1290 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1291 "\1mtu"; 1292 char routeflags[] = 1293 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1294 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1295 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1296 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1297 char ifnetflags[] = 1298 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1299 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1300 "\017LINK2\020MULTICAST"; 1301 char addrnames[] = 1302 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1303 1304 void 1305 print_rtmsg(rtm, msglen) 1306 register struct rt_msghdr *rtm; 1307 int msglen; 1308 { 1309 struct if_msghdr *ifm; 1310 struct ifa_msghdr *ifam; 1311 #ifdef RTM_NEWMADDR 1312 struct ifma_msghdr *ifmam; 1313 #endif 1314 1315 if (verbose == 0) 1316 return; 1317 if (rtm->rtm_version != RTM_VERSION) { 1318 (void) printf("routing message version %d not understood\n", 1319 rtm->rtm_version); 1320 return; 1321 } 1322 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1323 switch (rtm->rtm_type) { 1324 case RTM_IFINFO: 1325 ifm = (struct if_msghdr *)rtm; 1326 (void) printf("if# %d, flags:", ifm->ifm_index); 1327 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1328 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1329 break; 1330 case RTM_NEWADDR: 1331 case RTM_DELADDR: 1332 ifam = (struct ifa_msghdr *)rtm; 1333 (void) printf("metric %d, flags:", ifam->ifam_metric); 1334 bprintf(stdout, ifam->ifam_flags, routeflags); 1335 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1336 break; 1337 #ifdef RTM_NEWMADDR 1338 case RTM_NEWMADDR: 1339 case RTM_DELMADDR: 1340 ifmam = (struct ifma_msghdr *)rtm; 1341 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1342 break; 1343 #endif 1344 default: 1345 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1346 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1347 bprintf(stdout, rtm->rtm_flags, routeflags); 1348 pmsg_common(rtm); 1349 } 1350 } 1351 1352 void 1353 print_getmsg(rtm, msglen) 1354 register struct rt_msghdr *rtm; 1355 int msglen; 1356 { 1357 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1358 struct sockaddr_dl *ifp = NULL; 1359 register struct sockaddr *sa; 1360 register char *cp; 1361 register int i; 1362 1363 (void) printf(" route to: %s\n", routename(&so_dst)); 1364 if (rtm->rtm_version != RTM_VERSION) { 1365 warnx("routing message version %d not understood", 1366 rtm->rtm_version); 1367 return; 1368 } 1369 if (rtm->rtm_msglen > msglen) { 1370 warnx("message length mismatch, in packet %d, returned %d", 1371 rtm->rtm_msglen, msglen); 1372 } 1373 if (rtm->rtm_errno) { 1374 errno = rtm->rtm_errno; 1375 warn("message indicates error %d", errno); 1376 return; 1377 } 1378 cp = ((char *)(rtm + 1)); 1379 if (rtm->rtm_addrs) 1380 for (i = 1; i; i <<= 1) 1381 if (i & rtm->rtm_addrs) { 1382 sa = (struct sockaddr *)cp; 1383 switch (i) { 1384 case RTA_DST: 1385 dst = sa; 1386 break; 1387 case RTA_GATEWAY: 1388 gate = sa; 1389 break; 1390 case RTA_NETMASK: 1391 mask = sa; 1392 break; 1393 case RTA_IFP: 1394 if (sa->sa_family == AF_LINK && 1395 ((struct sockaddr_dl *)sa)->sdl_nlen) 1396 ifp = (struct sockaddr_dl *)sa; 1397 break; 1398 } 1399 ADVANCE(cp, sa); 1400 } 1401 if (dst && mask) 1402 mask->sa_family = dst->sa_family; /* XXX */ 1403 if (dst) 1404 (void)printf("destination: %s\n", routename(dst)); 1405 if (mask) { 1406 int savenflag = nflag; 1407 1408 nflag = 1; 1409 (void)printf(" mask: %s\n", routename(mask)); 1410 nflag = savenflag; 1411 } 1412 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1413 (void)printf(" gateway: %s\n", routename(gate)); 1414 if (ifp) 1415 (void)printf(" interface: %.*s\n", 1416 ifp->sdl_nlen, ifp->sdl_data); 1417 (void)printf(" flags: "); 1418 bprintf(stdout, rtm->rtm_flags, routeflags); 1419 1420 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1421 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1422 1423 (void) printf("\n%s\n", "\ 1424 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1425 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1426 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1427 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1428 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1429 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1430 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1431 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1432 if (rtm->rtm_rmx.rmx_expire) 1433 rtm->rtm_rmx.rmx_expire -= time(0); 1434 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1435 #undef lock 1436 #undef msec 1437 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1438 if (verbose) 1439 pmsg_common(rtm); 1440 else if (rtm->rtm_addrs &~ RTA_IGN) { 1441 (void) printf("sockaddrs: "); 1442 bprintf(stdout, rtm->rtm_addrs, addrnames); 1443 putchar('\n'); 1444 } 1445 #undef RTA_IGN 1446 } 1447 1448 void 1449 pmsg_common(rtm) 1450 register struct rt_msghdr *rtm; 1451 { 1452 (void) printf("\nlocks: "); 1453 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1454 (void) printf(" inits: "); 1455 bprintf(stdout, rtm->rtm_inits, metricnames); 1456 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1457 } 1458 1459 void 1460 pmsg_addrs(cp, addrs) 1461 char *cp; 1462 int addrs; 1463 { 1464 register struct sockaddr *sa; 1465 int i; 1466 1467 if (addrs == 0) 1468 return; 1469 (void) printf("\nsockaddrs: "); 1470 bprintf(stdout, addrs, addrnames); 1471 (void) putchar('\n'); 1472 for (i = 1; i; i <<= 1) 1473 if (i & addrs) { 1474 sa = (struct sockaddr *)cp; 1475 (void) printf(" %s", routename(sa)); 1476 ADVANCE(cp, sa); 1477 } 1478 (void) putchar('\n'); 1479 (void) fflush(stdout); 1480 } 1481 1482 void 1483 bprintf(fp, b, s) 1484 register FILE *fp; 1485 register int b; 1486 register u_char *s; 1487 { 1488 register int i; 1489 int gotsome = 0; 1490 1491 if (b == 0) 1492 return; 1493 while ((i = *s++) != 0) { 1494 if (b & (1 << (i-1))) { 1495 if (gotsome == 0) 1496 i = '<'; 1497 else 1498 i = ','; 1499 (void) putc(i, fp); 1500 gotsome = 1; 1501 for (; (i = *s) > 32; s++) 1502 (void) putc(i, fp); 1503 } else 1504 while (*s > 32) 1505 s++; 1506 } 1507 if (gotsome) 1508 (void) putc('>', fp); 1509 } 1510 1511 int 1512 keyword(cp) 1513 char *cp; 1514 { 1515 register struct keytab *kt = keywords; 1516 1517 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1518 kt++; 1519 return kt->kt_i; 1520 } 1521 1522 void 1523 sodump(su, which) 1524 register sup su; 1525 char *which; 1526 { 1527 switch (su->sa.sa_family) { 1528 case AF_LINK: 1529 (void) printf("%s: link %s; ", 1530 which, link_ntoa(&su->sdl)); 1531 break; 1532 case AF_INET: 1533 (void) printf("%s: inet %s; ", 1534 which, inet_ntoa(su->sin.sin_addr)); 1535 break; 1536 case AF_APPLETALK: 1537 (void) printf("%s: atalk %s; ", 1538 which, atalk_ntoa(su->sat.sat_addr)); 1539 break; 1540 #ifdef NS 1541 case AF_NS: 1542 (void) printf("%s: xns %s; ", 1543 which, ns_ntoa(su->sns.sns_addr)); 1544 break; 1545 #endif 1546 } 1547 (void) fflush(stdout); 1548 } 1549 1550 /* States*/ 1551 #define VIRGIN 0 1552 #define GOTONE 1 1553 #define GOTTWO 2 1554 /* Inputs */ 1555 #define DIGIT (4*0) 1556 #define END (4*1) 1557 #define DELIM (4*2) 1558 1559 void 1560 sockaddr(addr, sa) 1561 register char *addr; 1562 register struct sockaddr *sa; 1563 { 1564 register char *cp = (char *)sa; 1565 int size = sa->sa_len; 1566 char *cplim = cp + size; 1567 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1568 1569 bzero(cp, size); 1570 cp++; 1571 do { 1572 if ((*addr >= '0') && (*addr <= '9')) { 1573 new = *addr - '0'; 1574 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1575 new = *addr - 'a' + 10; 1576 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1577 new = *addr - 'A' + 10; 1578 } else if (*addr == 0) 1579 state |= END; 1580 else 1581 state |= DELIM; 1582 addr++; 1583 switch (state /* | INPUT */) { 1584 case GOTTWO | DIGIT: 1585 *cp++ = byte; /*FALLTHROUGH*/ 1586 case VIRGIN | DIGIT: 1587 state = GOTONE; byte = new; continue; 1588 case GOTONE | DIGIT: 1589 state = GOTTWO; byte = new + (byte << 4); continue; 1590 default: /* | DELIM */ 1591 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1592 case GOTONE | END: 1593 case GOTTWO | END: 1594 *cp++ = byte; /* FALLTHROUGH */ 1595 case VIRGIN | END: 1596 break; 1597 } 1598 break; 1599 } while (cp < cplim); 1600 sa->sa_len = cp - (char *)sa; 1601 } 1602 1603 int 1604 atalk_aton(const char *text, struct at_addr *addr) 1605 { 1606 u_int net, node; 1607 1608 if (sscanf(text, "%u.%u", &net, &node) != 2 1609 || net > 0xffff || node > 0xff) 1610 return(0); 1611 addr->s_net = htons(net); 1612 addr->s_node = node; 1613 return(1); 1614 } 1615 1616 char * 1617 atalk_ntoa(struct at_addr at) 1618 { 1619 static char buf[20]; 1620 1621 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1622 return(buf); 1623 } 1624 1625 #ifdef INET6 1626 char * 1627 inet6_ntoa(struct sockaddr *sa) 1628 { 1629 char *cp; 1630 struct sockaddr_in6 *sin6; 1631 int error = -1, gap; 1632 1633 cp = NULL; 1634 sin6 = (struct sockaddr_in6 *)sa; 1635 gap = sizeof(struct sockaddr_in6) - sin6->sin6_len; 1636 if (gap > 0) 1637 bzero((char *)(sin6) + sin6->sin6_len, gap); 1638 1639 /* XXX: embedded link local addr check */ 1640 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) && 1641 *(u_short *)&sin6->sin6_addr.s6_addr[2] != 0) { 1642 u_short index; 1643 1644 index = *(u_short *)&sin6->sin6_addr.s6_addr[2]; 1645 *(u_short *)&sin6->sin6_addr.s6_addr[2] = 0; 1646 if (sin6->sin6_scope_id == 0) 1647 sin6->sin6_scope_id = ntohs(index); 1648 } 1649 1650 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || sa->sa_len < 4) 1651 cp = "default"; 1652 if (cp == 0 && !nflag) 1653 error = getnameinfo(sa, sa->sa_len, name_buf, sizeof(name_buf), 1654 NULL, 0, NI_NAMEREQD); 1655 if (error != 0) 1656 error = getnameinfo(sa, sa->sa_len, name_buf, 1657 sizeof(name_buf), NULL, 0, 1658 NI_NUMERICHOST|NI_WITHSCOPEID); 1659 if (error != 0) 1660 inet_ntop(AF_INET6, &sin6->sin6_addr, name_buf, 1661 sizeof(name_buf)); 1662 1663 return (cp != NULL) ? cp : name_buf; 1664 } 1665 #endif 1666