route.c revision 21465
1/* 2 * 3 * Copyright (c) 1983, 1989, 1991, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the University of 17 * California, Berkeley and its contributors. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#ifndef lint 36static const char copyright[] = 37"@(#) Copyright (c) 1983, 1989, 1991, 1993\n\ 38 The Regents of the University of California. All rights reserved.\n"; 39#endif /* not lint */ 40 41#ifndef lint 42/* 43static char sccsid[] = "@(#)route.c 8.3 (Berkeley) 3/19/94"; 44*/ 45static const char rcsid[] = 46 "$Id: route.c,v 1.18 1996/12/10 17:07:30 wollman Exp $"; 47#endif /* not lint */ 48 49#include <sys/param.h> 50#include <sys/file.h> 51#include <sys/socket.h> 52#include <sys/ioctl.h> 53#include <sys/sysctl.h> 54#include <sys/time.h> 55 56#include <net/if.h> 57#include <net/route.h> 58#include <net/if_dl.h> 59#include <netinet/in.h> 60#include <netatalk/at.h> 61#ifdef NS 62#include <netns/ns.h> 63#endif 64#ifdef ISO 65#include <netiso/iso.h> 66#endif 67#ifdef CCITT 68#include <netccitt/x25.h> 69#endif 70#include <arpa/inet.h> 71#include <netdb.h> 72 73#include <ctype.h> 74#include <err.h> 75#include <errno.h> 76#include <paths.h> 77#include <stdio.h> 78#include <stdlib.h> 79#include <string.h> 80#include <sysexits.h> 81#include <time.h> 82#include <unistd.h> 83 84struct keytab { 85 char *kt_cp; 86 int kt_i; 87} keywords[] = { 88#include "keywords.h" 89 {0, 0} 90}; 91 92struct ortentry route; 93union sockunion { 94 struct sockaddr sa; 95 struct sockaddr_in sin; 96 struct sockaddr_at sat; 97#ifdef NS 98 struct sockaddr_ns sns; 99#endif 100#ifdef ISO 101 struct sockaddr_iso siso; 102#endif 103 struct sockaddr_dl sdl; 104#ifdef CCITT 105 struct sockaddr_x25 sx25; 106#endif 107} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 108 109typedef union sockunion *sup; 110int pid, rtm_addrs, uid; 111int s; 112int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 113int iflag, verbose, aflen = sizeof (struct sockaddr_in); 114int locking, lockrest, debugonly; 115struct rt_metrics rt_metrics; 116u_long rtm_inits; 117struct in_addr inet_makeaddr(); 118int atalk_aton __P((const char *, struct at_addr *)); 119char *atalk_ntoa __P((struct at_addr)); 120char *routename(), *netname(); 121void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 122void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 123int getaddr(), rtmsg(), x25_makemask(); 124extern char *inet_ntoa(), *iso_ntoa(), *link_ntoa(); 125#ifdef CCITT 126extern int ccitt_addr __P((char *, struct sockaddr_x25 *)); 127#endif 128 129void usage __P((const char *)) __dead2; 130 131void 132usage(cp) 133 const char *cp; 134{ 135 if (cp) 136 warnx("bad keyword: %s", cp); 137 (void) fprintf(stderr, 138 "usage: route [ -nqv ] cmd [[ -<qualifers> ] args ]\n"); 139 exit(EX_USAGE); 140 /* NOTREACHED */ 141} 142 143#define ROUNDUP(a) \ 144 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 145#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 146 147int 148main(argc, argv) 149 int argc; 150 char **argv; 151{ 152 extern int optind; 153 int ch; 154 155 if (argc < 2) 156 usage((char *)NULL); 157 158 while ((ch = getopt(argc, argv, "nqdtv")) != EOF) 159 switch(ch) { 160 case 'n': 161 nflag = 1; 162 break; 163 case 'q': 164 qflag = 1; 165 break; 166 case 'v': 167 verbose = 1; 168 break; 169 case 't': 170 tflag = 1; 171 break; 172 case 'd': 173 debugonly = 1; 174 break; 175 case '?': 176 default: 177 usage((char *)NULL); 178 } 179 argc -= optind; 180 argv += optind; 181 182 pid = getpid(); 183 uid = getuid(); 184 if (tflag) 185 s = open("/dev/null", O_WRONLY, 0); 186 else 187 s = socket(PF_ROUTE, SOCK_RAW, 0); 188 if (s < 0) 189 err(EX_OSERR, "socket"); 190 setuid(uid); 191 if (*argv) 192 switch (keyword(*argv)) { 193 case K_GET: 194 uid = 0; 195 /* FALLTHROUGH */ 196 197 case K_CHANGE: 198 case K_ADD: 199 case K_DELETE: 200 newroute(argc, argv); 201 exit(0); 202 /* NOTREACHED */ 203 204 case K_MONITOR: 205 monitor(); 206 /* NOTREACHED */ 207 208 case K_FLUSH: 209 flushroutes(argc, argv); 210 exit(0); 211 /* NOTREACHED */ 212 } 213 usage(*argv); 214 /* NOTREACHED */ 215} 216 217/* 218 * Purge all entries in the routing tables not 219 * associated with network interfaces. 220 */ 221void 222flushroutes(argc, argv) 223 int argc; 224 char *argv[]; 225{ 226 size_t needed; 227 int mib[6], rlen, seqno; 228 char *buf, *next, *lim; 229 register struct rt_msghdr *rtm; 230 231 if (uid) { 232 errx(EX_NOPERM, "must be root to alter routing table"); 233 } 234 shutdown(s, 0); /* Don't want to read back our messages */ 235 if (argc > 1) { 236 argv++; 237 if (argc == 2 && **argv == '-') 238 switch (keyword(*argv + 1)) { 239 case K_INET: 240 af = AF_INET; 241 break; 242 case K_ATALK: 243 af = AF_APPLETALK; 244 break; 245#ifdef NS 246 case K_XNS: 247 af = AF_NS; 248 break; 249#endif 250 case K_LINK: 251 af = AF_LINK; 252 break; 253#ifdef ISO 254 case K_ISO: 255 case K_OSI: 256 af = AF_ISO; 257 break; 258#endif 259#ifdef CCITT 260 case K_X25: 261 af = AF_CCITT; 262#endif 263 default: 264 goto bad; 265 } else 266bad: usage(*argv); 267 } 268 mib[0] = CTL_NET; 269 mib[1] = PF_ROUTE; 270 mib[2] = 0; /* protocol */ 271 mib[3] = 0; /* wildcard address family */ 272 mib[4] = NET_RT_DUMP; 273 mib[5] = 0; /* no flags */ 274 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 275 err(EX_OSERR, "route-sysctl-estimate"); 276 if ((buf = malloc(needed)) == NULL) 277 err(EX_OSERR, "malloc"); 278 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 279 err(EX_OSERR, "route-sysctl-get"); 280 lim = buf + needed; 281 if (verbose) 282 (void) printf("Examining routing table from sysctl\n"); 283 seqno = 0; /* ??? */ 284 for (next = buf; next < lim; next += rtm->rtm_msglen) { 285 rtm = (struct rt_msghdr *)next; 286 if (verbose) 287 print_rtmsg(rtm, rtm->rtm_msglen); 288 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 289 continue; 290 if (af) { 291 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 292 293 if (sa->sa_family != af) 294 continue; 295 } 296 if (debugonly) 297 continue; 298 rtm->rtm_type = RTM_DELETE; 299 rtm->rtm_seq = seqno; 300 rlen = write(s, next, rtm->rtm_msglen); 301 if (rlen < (int)rtm->rtm_msglen) { 302 warn("write to routing socket"); 303 (void) printf("got only %d for rlen\n", rlen); 304 break; 305 } 306 seqno++; 307 if (qflag) 308 continue; 309 if (verbose) 310 print_rtmsg(rtm, rlen); 311 else { 312 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 313 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 314 routename(sa) : netname(sa)); 315 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 316 (void) printf("%-20.20s ", routename(sa)); 317 (void) printf("done\n"); 318 } 319 } 320} 321 322char * 323routename(sa) 324 struct sockaddr *sa; 325{ 326 register char *cp; 327 static char line[MAXHOSTNAMELEN + 1]; 328 struct hostent *hp; 329 static char domain[MAXHOSTNAMELEN + 1]; 330 static int first = 1; 331#ifdef NS 332 char *ns_print(); 333#endif 334 335 if (first) { 336 first = 0; 337 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 338 (cp = index(domain, '.'))) { 339 domain[MAXHOSTNAMELEN] = '\0'; 340 (void) strcpy(domain, cp + 1); 341 } else 342 domain[0] = 0; 343 } 344 345 if (sa->sa_len == 0) 346 strcpy(line, "default"); 347 else switch (sa->sa_family) { 348 349 case AF_INET: 350 { struct in_addr in; 351 in = ((struct sockaddr_in *)sa)->sin_addr; 352 353 cp = 0; 354 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 355 cp = "default"; 356 if (cp == 0 && !nflag) { 357 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 358 AF_INET); 359 if (hp) { 360 if ((cp = index(hp->h_name, '.')) && 361 !strcmp(cp + 1, domain)) 362 *cp = 0; 363 cp = hp->h_name; 364 } 365 } 366 if (cp) 367 strncpy(line, cp, sizeof line); 368 else { 369 /* XXX - why not inet_ntoa()? */ 370#define C(x) (unsigned)((x) & 0xff) 371 in.s_addr = ntohl(in.s_addr); 372 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 373 C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr)); 374 } 375 break; 376 } 377 378 case AF_APPLETALK: 379 (void) snprintf(line, sizeof(line), "atalk %s", 380 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 381 break; 382 383#ifdef NS 384 case AF_NS: 385 return (ns_print((struct sockaddr_ns *)sa)); 386#endif 387 388 case AF_LINK: 389 return (link_ntoa((struct sockaddr_dl *)sa)); 390 391#ifdef ISO 392 case AF_ISO: 393 (void) snprintf(line, sizeof line, "iso %s", 394 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 395 break; 396#endif 397 default: 398 { u_short *s = (u_short *)sa; 399 u_short *slim = s + ((sa->sa_len + 1) >> 1); 400 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 401 char *cpe = line + sizeof(line); 402 403 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 404 cp += snprintf(cp, cpe - cp, " %x", *s); 405 break; 406 } 407 } 408 return (line); 409} 410 411/* 412 * Return the name of the network whose address is given. 413 * The address is assumed to be that of a net or subnet, not a host. 414 */ 415char * 416netname(sa) 417 struct sockaddr *sa; 418{ 419 char *cp = 0; 420 static char line[MAXHOSTNAMELEN + 1]; 421 struct netent *np = 0; 422 u_long net, mask; 423 register u_long i; 424 int subnetshift; 425#ifdef NS 426 char *ns_print(); 427#endif 428 429 switch (sa->sa_family) { 430 431 case AF_INET: 432 { struct in_addr in; 433 in = ((struct sockaddr_in *)sa)->sin_addr; 434 435 i = in.s_addr = ntohl(in.s_addr); 436 if (in.s_addr == 0) 437 cp = "default"; 438 else if (!nflag) { 439 if (IN_CLASSA(i)) { 440 mask = IN_CLASSA_NET; 441 subnetshift = 8; 442 } else if (IN_CLASSB(i)) { 443 mask = IN_CLASSB_NET; 444 subnetshift = 8; 445 } else { 446 mask = IN_CLASSC_NET; 447 subnetshift = 4; 448 } 449 /* 450 * If there are more bits than the standard mask 451 * would suggest, subnets must be in use. 452 * Guess at the subnet mask, assuming reasonable 453 * width subnet fields. 454 */ 455 while (in.s_addr &~ mask) 456 mask = (long)mask >> subnetshift; 457 net = in.s_addr & mask; 458 while ((mask & 1) == 0) 459 mask >>= 1, net >>= 1; 460 np = getnetbyaddr(net, AF_INET); 461 if (np) 462 cp = np->n_name; 463 } 464 if (cp) 465 strncpy(line, cp, sizeof(line)); 466 else if ((in.s_addr & 0xffffff) == 0) 467 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 468 else if ((in.s_addr & 0xffff) == 0) 469 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 470 C(in.s_addr >> 16)); 471 else if ((in.s_addr & 0xff) == 0) 472 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 473 C(in.s_addr >> 16), C(in.s_addr >> 8)); 474 else 475 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 476 C(in.s_addr >> 16), C(in.s_addr >> 8), 477 C(in.s_addr)); 478 break; 479 } 480 481 case AF_APPLETALK: 482 (void) snprintf(line, sizeof(line), "atalk %s", 483 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 484 break; 485 486#ifdef NS 487 case AF_NS: 488 return (ns_print((struct sockaddr_ns *)sa)); 489 break; 490#endif 491 492 case AF_LINK: 493 return (link_ntoa((struct sockaddr_dl *)sa)); 494 495#ifdef ISO 496 case AF_ISO: 497 (void) snprintf(line, sizeof(line), "iso %s", 498 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 499 break; 500#endif 501 502 default: 503 { u_short *s = (u_short *)sa->sa_data; 504 u_short *slim = s + ((sa->sa_len + 1)>>1); 505 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 506 char *cpe = line + sizeof(line); 507 508 while (s < slim && cp < cpe) 509 cp += snprintf(cp, cpe - cp, " %x", *s++); 510 break; 511 } 512 } 513 return (line); 514} 515 516void 517set_metric(value, key) 518 char *value; 519 int key; 520{ 521 int flag = 0; 522 u_long noval, *valp = &noval; 523 524 switch (key) { 525#define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 526 caseof(K_MTU, RTV_MTU, rmx_mtu); 527 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 528 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 529 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 530 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 531 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 532 caseof(K_RTT, RTV_RTT, rmx_rtt); 533 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 534 } 535 rtm_inits |= flag; 536 if (lockrest || locking) 537 rt_metrics.rmx_locks |= flag; 538 if (locking) 539 locking = 0; 540 *valp = atoi(value); 541} 542 543void 544newroute(argc, argv) 545 int argc; 546 register char **argv; 547{ 548 char *cmd, *dest = "", *gateway = "", *err; 549 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 550 int key; 551 struct hostent *hp = 0; 552 553 if (uid) { 554 errx(EX_NOPERM, "must be root to alter routing table"); 555 } 556 cmd = argv[0]; 557 if (*cmd != 'g') 558 shutdown(s, 0); /* Don't want to read back our messages */ 559 while (--argc > 0) { 560 if (**(++argv)== '-') { 561 switch (key = keyword(1 + *argv)) { 562 case K_LINK: 563 af = AF_LINK; 564 aflen = sizeof(struct sockaddr_dl); 565 break; 566#ifdef ISO 567 case K_OSI: 568 case K_ISO: 569 af = AF_ISO; 570 aflen = sizeof(struct sockaddr_iso); 571 break; 572#endif 573 case K_INET: 574 af = AF_INET; 575 aflen = sizeof(struct sockaddr_in); 576 break; 577 case K_ATALK: 578 af = AF_APPLETALK; 579 aflen = sizeof(struct sockaddr_at); 580 break; 581#ifdef CCITT 582 case K_X25: 583 af = AF_CCITT; 584 aflen = sizeof(struct sockaddr_x25); 585 break; 586#endif 587 case K_SA: 588 af = PF_ROUTE; 589 aflen = sizeof(union sockunion); 590 break; 591#ifdef NS 592 case K_XNS: 593 af = AF_NS; 594 aflen = sizeof(struct sockaddr_ns); 595 break; 596#endif 597 case K_IFACE: 598 case K_INTERFACE: 599 iflag++; 600 break; 601 case K_NOSTATIC: 602 flags &= ~RTF_STATIC; 603 break; 604 case K_LLINFO: 605 flags |= RTF_LLINFO; 606 break; 607 case K_LOCK: 608 locking = 1; 609 break; 610 case K_LOCKREST: 611 lockrest = 1; 612 break; 613 case K_HOST: 614 forcehost++; 615 break; 616 case K_REJECT: 617 flags |= RTF_REJECT; 618 break; 619 case K_BLACKHOLE: 620 flags |= RTF_BLACKHOLE; 621 break; 622 case K_PROTO1: 623 flags |= RTF_PROTO1; 624 break; 625 case K_PROTO2: 626 flags |= RTF_PROTO2; 627 break; 628 case K_CLONING: 629 flags |= RTF_CLONING; 630 break; 631 case K_XRESOLVE: 632 flags |= RTF_XRESOLVE; 633 break; 634 case K_STATIC: 635 flags |= RTF_STATIC; 636 break; 637 case K_IFA: 638 argc--; 639 (void) getaddr(RTA_IFA, *++argv, 0); 640 break; 641 case K_IFP: 642 argc--; 643 (void) getaddr(RTA_IFP, *++argv, 0); 644 break; 645 case K_GENMASK: 646 argc--; 647 (void) getaddr(RTA_GENMASK, *++argv, 0); 648 break; 649 case K_GATEWAY: 650 argc--; 651 (void) getaddr(RTA_GATEWAY, *++argv, 0); 652 break; 653 case K_DST: 654 argc--; 655 ishost = getaddr(RTA_DST, *++argv, &hp); 656 dest = *argv; 657 break; 658 case K_NETMASK: 659 argc--; 660 (void) getaddr(RTA_NETMASK, *++argv, 0); 661 /* FALLTHROUGH */ 662 case K_NET: 663 forcenet++; 664 break; 665 case K_MTU: 666 case K_HOPCOUNT: 667 case K_EXPIRE: 668 case K_RECVPIPE: 669 case K_SENDPIPE: 670 case K_SSTHRESH: 671 case K_RTT: 672 case K_RTTVAR: 673 argc--; 674 set_metric(*++argv, key); 675 break; 676 default: 677 usage(1+*argv); 678 } 679 } else { 680 if ((rtm_addrs & RTA_DST) == 0) { 681 dest = *argv; 682 ishost = getaddr(RTA_DST, *argv, &hp); 683 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 684 gateway = *argv; 685 (void) getaddr(RTA_GATEWAY, *argv, &hp); 686 } else { 687#ifdef CRUFT 688 int ret = atoi(*argv); 689 690 if (ret == 0) { 691 if (strcmp(*argv, "0") == 0) 692 printf("%s,%s", 693 "old usage of trailing 0", 694 "assuming route to if\n"); 695 else 696 usage((char *)NULL); 697 iflag = 1; 698 continue; 699 } else if (ret > 0 && ret < 10) { 700 printf("old usage of trailing digit, "); 701 printf("assuming route via gateway\n"); 702 iflag = 0; 703 continue; 704 } 705#endif 706 (void) getaddr(RTA_NETMASK, *argv, 0); 707 } 708 } 709 } 710 if (forcehost) 711 ishost = 1; 712 if (forcenet) 713 ishost = 0; 714 flags |= RTF_UP; 715 if (ishost) 716 flags |= RTF_HOST; 717 if (iflag == 0) 718 flags |= RTF_GATEWAY; 719 for (attempts = 1; ; attempts++) { 720 errno = 0; 721 if ((ret = rtmsg(*cmd, flags)) == 0) 722 break; 723 if (errno != ENETUNREACH && errno != ESRCH) 724 break; 725 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 726 hp->h_addr_list++; 727 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr, 728 hp->h_length); 729 } else 730 break; 731 } 732 if (*cmd == 'g') 733 exit(0); 734 oerrno = errno; 735 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 736 if (*gateway) { 737 (void) printf(": gateway %s", gateway); 738 if (attempts > 1 && ret == 0 && af == AF_INET) 739 (void) printf(" (%s)", 740 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 741 } 742 if (ret == 0) 743 (void) printf("\n"); 744 else { 745 switch (oerrno) { 746 case ESRCH: 747 err = "not in table"; 748 break; 749 case EBUSY: 750 err = "entry in use"; 751 break; 752 case ENOBUFS: 753 err = "routing table overflow"; 754 break; 755 default: 756 err = strerror(oerrno); 757 break; 758 } 759 (void) printf(": %s\n", err); 760 } 761} 762 763void 764inet_makenetandmask(net, sin) 765 u_long net; 766 register struct sockaddr_in *sin; 767{ 768 u_long addr, mask = 0; 769 register char *cp; 770 771 rtm_addrs |= RTA_NETMASK; 772 if (net == 0) 773 mask = addr = 0; 774 else if (net < 128) { 775 addr = net << IN_CLASSA_NSHIFT; 776 mask = IN_CLASSA_NET; 777 } else if (net < 65536) { 778 addr = net << IN_CLASSB_NSHIFT; 779 mask = IN_CLASSB_NET; 780 } else if (net < 16777216L) { 781 addr = net << IN_CLASSC_NSHIFT; 782 mask = IN_CLASSC_NET; 783 } else { 784 addr = net; 785 if ((addr & IN_CLASSA_HOST) == 0) 786 mask = IN_CLASSA_NET; 787 else if ((addr & IN_CLASSB_HOST) == 0) 788 mask = IN_CLASSB_NET; 789 else if ((addr & IN_CLASSC_HOST) == 0) 790 mask = IN_CLASSC_NET; 791 else 792 mask = -1; 793 } 794 sin->sin_addr.s_addr = htonl(addr); 795 sin = &so_mask.sin; 796 sin->sin_addr.s_addr = htonl(mask); 797 sin->sin_len = 0; 798 sin->sin_family = 0; 799 cp = (char *)(&sin->sin_addr + 1); 800 while (*--cp == 0 && cp > (char *)sin) 801 ; 802 sin->sin_len = 1 + cp - (char *)sin; 803} 804 805/* 806 * Interpret an argument as a network address of some kind, 807 * returning 1 if a host address, 0 if a network address. 808 */ 809int 810getaddr(which, s, hpp) 811 int which; 812 char *s; 813 struct hostent **hpp; 814{ 815 register sup su; 816#ifdef NS 817 struct ns_addr ns_addr(); 818#endif 819#ifdef ISO 820 struct iso_addr *iso_addr(); 821#endif 822 struct hostent *hp; 823 struct netent *np; 824 u_long val; 825 826 if (af == 0) { 827 af = AF_INET; 828 aflen = sizeof(struct sockaddr_in); 829 } 830 rtm_addrs |= which; 831 switch (which) { 832 case RTA_DST: 833 su = &so_dst; 834 su->sa.sa_family = af; 835 break; 836 case RTA_GATEWAY: 837 su = &so_gate; 838 if (iflag) { 839 #define MAX_IFACES 400 840 int sock; 841 struct ifreq iflist[MAX_IFACES]; 842 struct ifconf ifconf; 843 struct ifreq *ifr, *ifr_end; 844 struct sockaddr_dl *dl, *sdl = NULL; 845 846 /* Get socket */ 847 if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0) 848 err(1, "socket"); 849 850 /* Get interface list */ 851 ifconf.ifc_req = iflist; 852 ifconf.ifc_len = sizeof(iflist); 853 if (ioctl(sock, SIOCGIFCONF, &ifconf) < 0) 854 err(1, "ioctl(SIOCGIFCONF)"); 855 close(sock); 856 857 /* Look for this interface in the list */ 858 for (ifr = ifconf.ifc_req, 859 ifr_end = (struct ifreq *) 860 (ifconf.ifc_buf + ifconf.ifc_len); 861 ifr < ifr_end; 862 ifr = (struct ifreq *) ((char *) &ifr->ifr_addr 863 + ifr->ifr_addr.sa_len)) { 864 dl = (struct sockaddr_dl *)&ifr->ifr_addr; 865 if (ifr->ifr_addr.sa_family == AF_LINK 866 && (ifr->ifr_flags & IFF_POINTOPOINT) 867 && !strncmp(s, dl->sdl_data, dl->sdl_nlen) 868 && s[dl->sdl_nlen] == 0) { 869 sdl = dl; 870 break; 871 } 872 } 873 874 /* If we found it, then use it */ 875 if (sdl) { 876 su->sdl = *sdl; 877 return(1); 878 } 879 } 880 su->sa.sa_family = af; 881 break; 882 case RTA_NETMASK: 883 su = &so_mask; 884 break; 885 case RTA_GENMASK: 886 su = &so_genmask; 887 break; 888 case RTA_IFP: 889 su = &so_ifp; 890 su->sa.sa_family = af; 891 break; 892 case RTA_IFA: 893 su = &so_ifa; 894 su->sa.sa_family = af; 895 break; 896 default: 897 usage("Internal Error"); 898 /*NOTREACHED*/ 899 } 900 su->sa.sa_len = aflen; 901 if (strcmp(s, "default") == 0) { 902 switch (which) { 903 case RTA_DST: 904 forcenet++; 905 (void) getaddr(RTA_NETMASK, s, 0); 906 break; 907 case RTA_NETMASK: 908 case RTA_GENMASK: 909 su->sa.sa_len = 0; 910 } 911 return (0); 912 } 913 switch (af) { 914#ifdef NS 915 case AF_NS: 916 if (which == RTA_DST) { 917 extern short ns_bh[3]; 918 struct sockaddr_ns *sms = &(so_mask.sns); 919 bzero((char *)sms, sizeof(*sms)); 920 sms->sns_family = 0; 921 sms->sns_len = 6; 922 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 923 rtm_addrs |= RTA_NETMASK; 924 } 925 su->sns.sns_addr = ns_addr(s); 926 return (!ns_nullhost(su->sns.sns_addr)); 927#endif 928 929#ifdef ISO 930 case AF_OSI: 931 su->siso.siso_addr = *iso_addr(s); 932 if (which == RTA_NETMASK || which == RTA_GENMASK) { 933 register char *cp = (char *)TSEL(&su->siso); 934 su->siso.siso_nlen = 0; 935 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 936 su->siso.siso_len = 1 + cp - (char *)su; 937 } 938 return (1); 939#endif 940 941 case AF_APPLETALK: 942 if (!atalk_aton(s, &su->sat.sat_addr)) 943 errx(EX_NOHOST, "bad address: %s", s); 944 rtm_addrs |= RTA_NETMASK; 945 return(forcehost || su->sat.sat_addr.s_node != 0); 946 947 case AF_LINK: 948 link_addr(s, &su->sdl); 949 return (1); 950 951#ifdef ISO 952 case AF_CCITT: 953 ccitt_addr(s, &su->sx25); 954 return (which == RTA_DST ? x25_makemask() : 1); 955#endif 956 957 case PF_ROUTE: 958 su->sa.sa_len = sizeof(*su); 959 sockaddr(s, &su->sa); 960 return (1); 961 962 case AF_INET: 963 default: 964 break; 965 } 966 967 if (hpp == NULL) 968 hpp = &hp; 969 *hpp = NULL; 970 if (((val = inet_addr(s)) != INADDR_NONE) && 971 (which != RTA_DST || forcenet == 0)) { 972 su->sin.sin_addr.s_addr = val; 973 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 974 return (1); 975 else { 976 val = ntohl(val); 977 goto netdone; 978 } 979 } 980 if ((val = inet_network(s)) != INADDR_NONE || 981 (forcehost == 0 && (np = getnetbyname(s)) != NULL && 982 (val = np->n_net) != 0)) { 983netdone: 984 if (which == RTA_DST) 985 inet_makenetandmask(val, &su->sin); 986 return (0); 987 } 988 hp = gethostbyname(s); 989 if (hp) { 990 *hpp = hp; 991 su->sin.sin_family = hp->h_addrtype; 992 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, hp->h_length); 993 return (1); 994 } 995 errx(EX_NOHOST, "bad address: %s", s); 996} 997 998#ifdef CCITT 999int 1000x25_makemask() 1001{ 1002 register char *cp; 1003 1004 if ((rtm_addrs & RTA_NETMASK) == 0) { 1005 rtm_addrs |= RTA_NETMASK; 1006 for (cp = (char *)&so_mask.sx25.x25_net; 1007 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1008 *cp = -1; 1009 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1010 } 1011 return 0; 1012} 1013#endif 1014 1015#ifdef NS 1016short ns_nullh[] = {0,0,0}; 1017short ns_bh[] = {-1,-1,-1}; 1018 1019char * 1020ns_print(sns) 1021 struct sockaddr_ns *sns; 1022{ 1023 struct ns_addr work; 1024 union { union ns_net net_e; u_long long_e; } net; 1025 u_short port; 1026 static char mybuf[50], cport[10], chost[25]; 1027 char *host = ""; 1028 register char *p; 1029 register u_char *q; 1030 1031 work = sns->sns_addr; 1032 port = ntohs(work.x_port); 1033 work.x_port = 0; 1034 net.net_e = work.x_net; 1035 if (ns_nullhost(work) && net.long_e == 0) { 1036 if (!port) 1037 return ("*.*"); 1038 (void) sprintf(mybuf, "*.%XH", port); 1039 return (mybuf); 1040 } 1041 1042 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0) 1043 host = "any"; 1044 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0) 1045 host = "*"; 1046 else { 1047 q = work.x_host.c_host; 1048 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 1049 q[0], q[1], q[2], q[3], q[4], q[5]); 1050 for (p = chost; *p == '0' && p < chost + 12; p++) 1051 /* void */; 1052 host = p; 1053 } 1054 if (port) 1055 (void) sprintf(cport, ".%XH", htons(port)); 1056 else 1057 *cport = 0; 1058 1059 (void) sprintf(mybuf,"%lxH.%s%s", (unsigned long)ntohl(net.long_e), 1060 host, cport); 1061 return (mybuf); 1062} 1063#endif 1064 1065void 1066interfaces() 1067{ 1068 size_t needed; 1069 int mib[6]; 1070 char *buf, *lim, *next; 1071 register struct rt_msghdr *rtm; 1072 1073 mib[0] = CTL_NET; 1074 mib[1] = PF_ROUTE; 1075 mib[2] = 0; /* protocol */ 1076 mib[3] = 0; /* wildcard address family */ 1077 mib[4] = NET_RT_IFLIST; 1078 mib[5] = 0; /* no flags */ 1079 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1080 err(EX_OSERR, "route-sysctl-estimate"); 1081 if ((buf = malloc(needed)) == NULL) 1082 err(EX_OSERR, "malloc"); 1083 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1084 err(EX_OSERR, "actual retrieval of interface table"); 1085 lim = buf + needed; 1086 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1087 rtm = (struct rt_msghdr *)next; 1088 print_rtmsg(rtm, rtm->rtm_msglen); 1089 } 1090} 1091 1092void 1093monitor() 1094{ 1095 int n; 1096 char msg[2048]; 1097 1098 verbose = 1; 1099 if (debugonly) { 1100 interfaces(); 1101 exit(0); 1102 } 1103 for(;;) { 1104 n = read(s, msg, 2048); 1105 (void) printf("got message of size %d\n", n); 1106 print_rtmsg((struct rt_msghdr *)msg, n); 1107 } 1108} 1109 1110struct { 1111 struct rt_msghdr m_rtm; 1112 char m_space[512]; 1113} m_rtmsg; 1114 1115int 1116rtmsg(cmd, flags) 1117 int cmd, flags; 1118{ 1119 static int seq; 1120 int rlen; 1121 register char *cp = m_rtmsg.m_space; 1122 register int l; 1123 1124#define NEXTADDR(w, u) \ 1125 if (rtm_addrs & (w)) {\ 1126 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 1127 if (verbose) sodump(&(u),"u");\ 1128 } 1129 1130 errno = 0; 1131 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 1132 if (cmd == 'a') 1133 cmd = RTM_ADD; 1134 else if (cmd == 'c') 1135 cmd = RTM_CHANGE; 1136 else if (cmd == 'g') { 1137 cmd = RTM_GET; 1138 if (so_ifp.sa.sa_family == 0) { 1139 so_ifp.sa.sa_family = AF_LINK; 1140 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1141 rtm_addrs |= RTA_IFP; 1142 } 1143 } else 1144 cmd = RTM_DELETE; 1145#define rtm m_rtmsg.m_rtm 1146 rtm.rtm_type = cmd; 1147 rtm.rtm_flags = flags; 1148 rtm.rtm_version = RTM_VERSION; 1149 rtm.rtm_seq = ++seq; 1150 rtm.rtm_addrs = rtm_addrs; 1151 rtm.rtm_rmx = rt_metrics; 1152 rtm.rtm_inits = rtm_inits; 1153 1154 if (rtm_addrs & RTA_NETMASK) 1155 mask_addr(); 1156 NEXTADDR(RTA_DST, so_dst); 1157 NEXTADDR(RTA_GATEWAY, so_gate); 1158 NEXTADDR(RTA_NETMASK, so_mask); 1159 NEXTADDR(RTA_GENMASK, so_genmask); 1160 NEXTADDR(RTA_IFP, so_ifp); 1161 NEXTADDR(RTA_IFA, so_ifa); 1162 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1163 if (verbose) 1164 print_rtmsg(&rtm, l); 1165 if (debugonly) 1166 return (0); 1167 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1168 perror("writing to routing socket"); 1169 return (-1); 1170 } 1171 if (cmd == RTM_GET) { 1172 do { 1173 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1174 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1175 if (l < 0) 1176 warn("read from routing socket"); 1177 else 1178 print_getmsg(&rtm, l); 1179 } 1180#undef rtm 1181 return (0); 1182} 1183 1184void 1185mask_addr() 1186{ 1187 int olen = so_mask.sa.sa_len; 1188 register char *cp1 = olen + (char *)&so_mask, *cp2; 1189 1190 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1191 if (*--cp1 != 0) { 1192 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1193 break; 1194 } 1195 if ((rtm_addrs & RTA_DST) == 0) 1196 return; 1197 switch (so_dst.sa.sa_family) { 1198#ifdef NS 1199 case AF_NS: 1200#endif 1201 case AF_INET: 1202 case AF_APPLETALK: 1203#ifdef CCITT 1204 case AF_CCITT: 1205#endif 1206 case 0: 1207 return; 1208#ifdef ISO 1209 case AF_ISO: 1210 olen = MIN(so_dst.siso.siso_nlen, 1211 MAX(so_mask.sa.sa_len - 6, 0)); 1212 break; 1213#endif 1214 } 1215 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1216 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1217 while (cp2 > cp1) 1218 *--cp2 = 0; 1219 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1220 while (cp1 > so_dst.sa.sa_data) 1221 *--cp1 &= *--cp2; 1222#ifdef ISO 1223 switch (so_dst.sa.sa_family) { 1224 case AF_ISO: 1225 so_dst.siso.siso_nlen = olen; 1226 break; 1227 } 1228#endif 1229} 1230 1231char *msgtypes[] = { 1232 "", 1233 "RTM_ADD: Add Route", 1234 "RTM_DELETE: Delete Route", 1235 "RTM_CHANGE: Change Metrics or flags", 1236 "RTM_GET: Report Metrics", 1237 "RTM_LOSING: Kernel Suspects Partitioning", 1238 "RTM_REDIRECT: Told to use different route", 1239 "RTM_MISS: Lookup failed on this address", 1240 "RTM_LOCK: fix specified metrics", 1241 "RTM_OLDADD: caused by SIOCADDRT", 1242 "RTM_OLDDEL: caused by SIOCDELRT", 1243 "RTM_RESOLVE: Route created by cloning", 1244 "RTM_NEWADDR: address being added to iface", 1245 "RTM_DELADDR: address being removed from iface", 1246 "RTM_IFINFO: iface status change", 1247 "RTM_NEWMADDR: new multicast group membership on iface", 1248 "RTM_DELMADDR: multicast group membership removed from iface", 1249 0, 1250}; 1251 1252char metricnames[] = 1253"\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1254"\1mtu"; 1255char routeflags[] = 1256"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1257"\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1258"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1259"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1260char ifnetflags[] = 1261"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1262"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1263"\017LINK2\020MULTICAST"; 1264char addrnames[] = 1265"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1266 1267void 1268print_rtmsg(rtm, msglen) 1269 register struct rt_msghdr *rtm; 1270 int msglen; 1271{ 1272 struct if_msghdr *ifm; 1273 struct ifa_msghdr *ifam; 1274#ifdef RTM_NEWMADDR 1275 struct ifma_msghdr *ifmam; 1276#endif 1277 1278 if (verbose == 0) 1279 return; 1280 if (rtm->rtm_version != RTM_VERSION) { 1281 (void) printf("routing message version %d not understood\n", 1282 rtm->rtm_version); 1283 return; 1284 } 1285 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1286 switch (rtm->rtm_type) { 1287 case RTM_IFINFO: 1288 ifm = (struct if_msghdr *)rtm; 1289 (void) printf("if# %d, flags:", ifm->ifm_index); 1290 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1291 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1292 break; 1293 case RTM_NEWADDR: 1294 case RTM_DELADDR: 1295 ifam = (struct ifa_msghdr *)rtm; 1296 (void) printf("metric %d, flags:", ifam->ifam_metric); 1297 bprintf(stdout, ifam->ifam_flags, routeflags); 1298 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1299 break; 1300#ifdef RTM_NEWMADDR 1301 case RTM_NEWMADDR: 1302 case RTM_DELMADDR: 1303 ifmam = (struct ifma_msghdr *)rtm; 1304 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1305 break; 1306#endif 1307 default: 1308 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1309 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1310 bprintf(stdout, rtm->rtm_flags, routeflags); 1311 pmsg_common(rtm); 1312 } 1313} 1314 1315void 1316print_getmsg(rtm, msglen) 1317 register struct rt_msghdr *rtm; 1318 int msglen; 1319{ 1320 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1321 struct sockaddr_dl *ifp = NULL; 1322 register struct sockaddr *sa; 1323 register char *cp; 1324 register int i; 1325 1326 (void) printf(" route to: %s\n", routename(&so_dst)); 1327 if (rtm->rtm_version != RTM_VERSION) { 1328 warnx("routing message version %d not understood", 1329 rtm->rtm_version); 1330 return; 1331 } 1332 if (rtm->rtm_msglen > msglen) { 1333 warnx("message length mismatch, in packet %d, returned %d\n", 1334 rtm->rtm_msglen, msglen); 1335 } 1336 if (rtm->rtm_errno) { 1337 errno = rtm->rtm_errno; 1338 warn("message indicates error %d", errno); 1339 return; 1340 } 1341 cp = ((char *)(rtm + 1)); 1342 if (rtm->rtm_addrs) 1343 for (i = 1; i; i <<= 1) 1344 if (i & rtm->rtm_addrs) { 1345 sa = (struct sockaddr *)cp; 1346 switch (i) { 1347 case RTA_DST: 1348 dst = sa; 1349 break; 1350 case RTA_GATEWAY: 1351 gate = sa; 1352 break; 1353 case RTA_NETMASK: 1354 mask = sa; 1355 break; 1356 case RTA_IFP: 1357 if (sa->sa_family == AF_LINK && 1358 ((struct sockaddr_dl *)sa)->sdl_nlen) 1359 ifp = (struct sockaddr_dl *)sa; 1360 break; 1361 } 1362 ADVANCE(cp, sa); 1363 } 1364 if (dst && mask) 1365 mask->sa_family = dst->sa_family; /* XXX */ 1366 if (dst) 1367 (void)printf("destination: %s\n", routename(dst)); 1368 if (mask) { 1369 int savenflag = nflag; 1370 1371 nflag = 1; 1372 (void)printf(" mask: %s\n", routename(mask)); 1373 nflag = savenflag; 1374 } 1375 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1376 (void)printf(" gateway: %s\n", routename(gate)); 1377 if (ifp) 1378 (void)printf(" interface: %.*s\n", 1379 ifp->sdl_nlen, ifp->sdl_data); 1380 (void)printf(" flags: "); 1381 bprintf(stdout, rtm->rtm_flags, routeflags); 1382 1383#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1384#define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1385 1386 (void) printf("\n%s\n", "\ 1387 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1388 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1389 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1390 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1391 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1392 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1393 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1394 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1395 if (rtm->rtm_rmx.rmx_expire) 1396 rtm->rtm_rmx.rmx_expire -= time(0); 1397 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1398#undef lock 1399#undef msec 1400#define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1401 if (verbose) 1402 pmsg_common(rtm); 1403 else if (rtm->rtm_addrs &~ RTA_IGN) { 1404 (void) printf("sockaddrs: "); 1405 bprintf(stdout, rtm->rtm_addrs, addrnames); 1406 putchar('\n'); 1407 } 1408#undef RTA_IGN 1409} 1410 1411void 1412pmsg_common(rtm) 1413 register struct rt_msghdr *rtm; 1414{ 1415 (void) printf("\nlocks: "); 1416 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1417 (void) printf(" inits: "); 1418 bprintf(stdout, rtm->rtm_inits, metricnames); 1419 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1420} 1421 1422void 1423pmsg_addrs(cp, addrs) 1424 char *cp; 1425 int addrs; 1426{ 1427 register struct sockaddr *sa; 1428 int i; 1429 1430 if (addrs == 0) 1431 return; 1432 (void) printf("\nsockaddrs: "); 1433 bprintf(stdout, addrs, addrnames); 1434 (void) putchar('\n'); 1435 for (i = 1; i; i <<= 1) 1436 if (i & addrs) { 1437 sa = (struct sockaddr *)cp; 1438 (void) printf(" %s", routename(sa)); 1439 ADVANCE(cp, sa); 1440 } 1441 (void) putchar('\n'); 1442 (void) fflush(stdout); 1443} 1444 1445void 1446bprintf(fp, b, s) 1447 register FILE *fp; 1448 register int b; 1449 register u_char *s; 1450{ 1451 register int i; 1452 int gotsome = 0; 1453 1454 if (b == 0) 1455 return; 1456 while ((i = *s++) != 0) { 1457 if (b & (1 << (i-1))) { 1458 if (gotsome == 0) 1459 i = '<'; 1460 else 1461 i = ','; 1462 (void) putc(i, fp); 1463 gotsome = 1; 1464 for (; (i = *s) > 32; s++) 1465 (void) putc(i, fp); 1466 } else 1467 while (*s > 32) 1468 s++; 1469 } 1470 if (gotsome) 1471 (void) putc('>', fp); 1472} 1473 1474int 1475keyword(cp) 1476 char *cp; 1477{ 1478 register struct keytab *kt = keywords; 1479 1480 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1481 kt++; 1482 return kt->kt_i; 1483} 1484 1485void 1486sodump(su, which) 1487 register sup su; 1488 char *which; 1489{ 1490 switch (su->sa.sa_family) { 1491 case AF_LINK: 1492 (void) printf("%s: link %s; ", 1493 which, link_ntoa(&su->sdl)); 1494 break; 1495#ifdef ISO 1496 case AF_ISO: 1497 (void) printf("%s: iso %s; ", 1498 which, iso_ntoa(&su->siso.siso_addr)); 1499 break; 1500#endif 1501 case AF_INET: 1502 (void) printf("%s: inet %s; ", 1503 which, inet_ntoa(su->sin.sin_addr)); 1504 break; 1505 case AF_APPLETALK: 1506 (void) printf("%s: atalk %s; ", 1507 which, atalk_ntoa(su->sat.sat_addr)); 1508 break; 1509#ifdef NS 1510 case AF_NS: 1511 (void) printf("%s: xns %s; ", 1512 which, ns_ntoa(su->sns.sns_addr)); 1513 break; 1514#endif 1515 } 1516 (void) fflush(stdout); 1517} 1518 1519/* States*/ 1520#define VIRGIN 0 1521#define GOTONE 1 1522#define GOTTWO 2 1523/* Inputs */ 1524#define DIGIT (4*0) 1525#define END (4*1) 1526#define DELIM (4*2) 1527 1528void 1529sockaddr(addr, sa) 1530 register char *addr; 1531 register struct sockaddr *sa; 1532{ 1533 register char *cp = (char *)sa; 1534 int size = sa->sa_len; 1535 char *cplim = cp + size; 1536 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1537 1538 bzero(cp, size); 1539 cp++; 1540 do { 1541 if ((*addr >= '0') && (*addr <= '9')) { 1542 new = *addr - '0'; 1543 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1544 new = *addr - 'a' + 10; 1545 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1546 new = *addr - 'A' + 10; 1547 } else if (*addr == 0) 1548 state |= END; 1549 else 1550 state |= DELIM; 1551 addr++; 1552 switch (state /* | INPUT */) { 1553 case GOTTWO | DIGIT: 1554 *cp++ = byte; /*FALLTHROUGH*/ 1555 case VIRGIN | DIGIT: 1556 state = GOTONE; byte = new; continue; 1557 case GOTONE | DIGIT: 1558 state = GOTTWO; byte = new + (byte << 4); continue; 1559 default: /* | DELIM */ 1560 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1561 case GOTONE | END: 1562 case GOTTWO | END: 1563 *cp++ = byte; /* FALLTHROUGH */ 1564 case VIRGIN | END: 1565 break; 1566 } 1567 break; 1568 } while (cp < cplim); 1569 sa->sa_len = cp - (char *)sa; 1570} 1571 1572int 1573atalk_aton(const char *text, struct at_addr *addr) 1574{ 1575 u_int net, node; 1576 1577 if (sscanf(text, "%u.%u", &net, &node) != 2 1578 || net > 0xffff || node > 0xff) 1579 return(0); 1580 addr->s_net = htons(net); 1581 addr->s_node = node; 1582 return(1); 1583} 1584 1585char * 1586atalk_ntoa(struct at_addr at) 1587{ 1588 static char buf[20]; 1589 1590 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1591 return(buf); 1592} 1593