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