route.c revision 51639
1181847Sjkim/* 2182393Sjkim * Copyright (c) 1983, 1989, 1991, 1993 3181847Sjkim * The Regents of the University of California. All rights reserved. 4181847Sjkim * 5181847Sjkim * Redistribution and use in source and binary forms, with or without 6181847Sjkim * modification, are permitted provided that the following conditions 7181847Sjkim * are met: 8181847Sjkim * 1. Redistributions of source code must retain the above copyright 9182393Sjkim * notice, this list of conditions and the following disclaimer. 10182393Sjkim * 2. Redistributions in binary form must reproduce the above copyright 11181847Sjkim * notice, this list of conditions and the following disclaimer in the 12181847Sjkim * documentation and/or other materials provided with the distribution. 13181847Sjkim * 3. All advertising materials mentioning features or use of this software 14181847Sjkim * must display the following acknowledgement: 15181847Sjkim * This product includes software developed by the University of 16181847Sjkim * California, Berkeley and its contributors. 17181847Sjkim * 4. Neither the name of the University nor the names of its contributors 18181847Sjkim * may be used to endorse or promote products derived from this software 19181847Sjkim * without specific prior written permission. 20181847Sjkim * 21181847Sjkim * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22181847Sjkim * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23181847Sjkim * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24181847Sjkim * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25181847Sjkim * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26181847Sjkim * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27181847Sjkim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28181847Sjkim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29181847Sjkim * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30181847Sjkim * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31182393Sjkim * SUCH DAMAGE. 32181847Sjkim */ 33 34#ifndef lint 35static 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 42static char sccsid[] = "@(#)route.c 8.3 (Berkeley) 3/19/94"; 43#endif 44static const char rcsid[] = 45 "$FreeBSD: head/sbin/route/route.c 51639 1999-09-25 03:20:29Z billf $"; 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 75struct keytab { 76 char *kt_cp; 77 int kt_i; 78} keywords[] = { 79#include "keywords.h" 80 {0, 0} 81}; 82 83struct ortentry route; 84union sockunion { 85 struct sockaddr sa; 86 struct sockaddr_in sin; 87 struct sockaddr_at sat; 88#ifdef NS 89 struct sockaddr_ns sns; 90#endif 91 struct sockaddr_dl sdl; 92} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 93 94typedef union sockunion *sup; 95int pid, rtm_addrs, uid; 96int s; 97int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 98int iflag, verbose, aflen = sizeof (struct sockaddr_in); 99int locking, lockrest, debugonly; 100struct rt_metrics rt_metrics; 101u_long rtm_inits; 102struct in_addr inet_makeaddr(); 103int atalk_aton __P((const char *, struct at_addr *)); 104char *atalk_ntoa __P((struct at_addr)); 105char *routename(), *netname(); 106void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 107void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 108int getaddr(), rtmsg(), x25_makemask(); 109extern char *iso_ntoa(); 110 111void usage __P((const char *)) __dead2; 112 113void 114usage(cp) 115 const char *cp; 116{ 117 if (cp) 118 warnx("bad keyword: %s", cp); 119 (void) fprintf(stderr, 120 "usage: route [-dnqtv] command [[modifiers] args]\n"); 121 exit(EX_USAGE); 122 /* NOTREACHED */ 123} 124 125#define ROUNDUP(a) \ 126 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 127#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 128 129int 130main(argc, argv) 131 int argc; 132 char **argv; 133{ 134 int ch; 135 136 if (argc < 2) 137 usage((char *)NULL); 138 139 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 140 switch(ch) { 141 case 'n': 142 nflag = 1; 143 break; 144 case 'q': 145 qflag = 1; 146 break; 147 case 'v': 148 verbose = 1; 149 break; 150 case 't': 151 tflag = 1; 152 break; 153 case 'd': 154 debugonly = 1; 155 break; 156 case '?': 157 default: 158 usage((char *)NULL); 159 } 160 argc -= optind; 161 argv += optind; 162 163 pid = getpid(); 164 uid = getuid(); 165 if (tflag) 166 s = open("/dev/null", O_WRONLY, 0); 167 else 168 s = socket(PF_ROUTE, SOCK_RAW, 0); 169 if (s < 0) 170 err(EX_OSERR, "socket"); 171 setuid(uid); 172 if (*argv) 173 switch (keyword(*argv)) { 174 case K_GET: 175 uid = 0; 176 /* FALLTHROUGH */ 177 178 case K_CHANGE: 179 case K_ADD: 180 case K_DELETE: 181 newroute(argc, argv); 182 exit(0); 183 /* NOTREACHED */ 184 185 case K_MONITOR: 186 monitor(); 187 /* NOTREACHED */ 188 189 case K_FLUSH: 190 flushroutes(argc, argv); 191 exit(0); 192 /* NOTREACHED */ 193 } 194 usage(*argv); 195 /* NOTREACHED */ 196} 197 198/* 199 * Purge all entries in the routing tables not 200 * associated with network interfaces. 201 */ 202void 203flushroutes(argc, argv) 204 int argc; 205 char *argv[]; 206{ 207 size_t needed; 208 int mib[6], rlen, seqno; 209 char *buf, *next, *lim; 210 register struct rt_msghdr *rtm; 211 212 if (uid) { 213 errx(EX_NOPERM, "must be root to alter routing table"); 214 } 215 shutdown(s, 0); /* Don't want to read back our messages */ 216 if (argc > 1) { 217 argv++; 218 if (argc == 2 && **argv == '-') 219 switch (keyword(*argv + 1)) { 220 case K_INET: 221 af = AF_INET; 222 break; 223 case K_ATALK: 224 af = AF_APPLETALK; 225 break; 226#ifdef NS 227 case K_XNS: 228 af = AF_NS; 229 break; 230#endif 231 case K_LINK: 232 af = AF_LINK; 233 break; 234 default: 235 goto bad; 236 } else 237bad: usage(*argv); 238 } 239 mib[0] = CTL_NET; 240 mib[1] = PF_ROUTE; 241 mib[2] = 0; /* protocol */ 242 mib[3] = 0; /* wildcard address family */ 243 mib[4] = NET_RT_DUMP; 244 mib[5] = 0; /* no flags */ 245 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 246 err(EX_OSERR, "route-sysctl-estimate"); 247 if ((buf = malloc(needed)) == NULL) 248 errx(EX_OSERR, "malloc failed"); 249 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 250 err(EX_OSERR, "route-sysctl-get"); 251 lim = buf + needed; 252 if (verbose) 253 (void) printf("Examining routing table from sysctl\n"); 254 seqno = 0; /* ??? */ 255 for (next = buf; next < lim; next += rtm->rtm_msglen) { 256 rtm = (struct rt_msghdr *)next; 257 if (verbose) 258 print_rtmsg(rtm, rtm->rtm_msglen); 259 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 260 continue; 261 if (af) { 262 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 263 264 if (sa->sa_family != af) 265 continue; 266 } 267 if (debugonly) 268 continue; 269 rtm->rtm_type = RTM_DELETE; 270 rtm->rtm_seq = seqno; 271 rlen = write(s, next, rtm->rtm_msglen); 272 if (rlen < (int)rtm->rtm_msglen) { 273 warn("write to routing socket"); 274 (void) printf("got only %d for rlen\n", rlen); 275 break; 276 } 277 seqno++; 278 if (qflag) 279 continue; 280 if (verbose) 281 print_rtmsg(rtm, rlen); 282 else { 283 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 284 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 285 routename(sa) : netname(sa)); 286 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 287 (void) printf("%-20.20s ", routename(sa)); 288 (void) printf("done\n"); 289 } 290 } 291} 292 293char * 294routename(sa) 295 struct sockaddr *sa; 296{ 297 register char *cp; 298 static char line[MAXHOSTNAMELEN + 1]; 299 struct hostent *hp; 300 static char domain[MAXHOSTNAMELEN + 1]; 301 static int first = 1; 302#ifdef NS 303 char *ns_print(); 304#endif 305 306 if (first) { 307 first = 0; 308 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 309 (cp = index(domain, '.'))) { 310 domain[MAXHOSTNAMELEN] = '\0'; 311 (void) strcpy(domain, cp + 1); 312 } else 313 domain[0] = 0; 314 } 315 316 if (sa->sa_len == 0) 317 strcpy(line, "default"); 318 else switch (sa->sa_family) { 319 320 case AF_INET: 321 { struct in_addr in; 322 in = ((struct sockaddr_in *)sa)->sin_addr; 323 324 cp = 0; 325 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 326 cp = "default"; 327 if (cp == 0 && !nflag) { 328 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 329 AF_INET); 330 if (hp) { 331 if ((cp = index(hp->h_name, '.')) && 332 !strcmp(cp + 1, domain)) 333 *cp = 0; 334 cp = hp->h_name; 335 } 336 } 337 if (cp) { 338 strncpy(line, cp, sizeof(line) - 1); 339 line[sizeof(line) - 1] = '\0'; 340 } else { 341 /* XXX - why not inet_ntoa()? */ 342#define C(x) (unsigned)((x) & 0xff) 343 in.s_addr = ntohl(in.s_addr); 344 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 345 C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr)); 346 } 347 break; 348 } 349 350 case AF_APPLETALK: 351 (void) snprintf(line, sizeof(line), "atalk %s", 352 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 353 break; 354 355#ifdef NS 356 case AF_NS: 357 return (ns_print((struct sockaddr_ns *)sa)); 358#endif 359 360 case AF_LINK: 361 return (link_ntoa((struct sockaddr_dl *)sa)); 362 363 default: 364 { u_short *s = (u_short *)sa; 365 u_short *slim = s + ((sa->sa_len + 1) >> 1); 366 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 367 char *cpe = line + sizeof(line); 368 369 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 370 cp += snprintf(cp, cpe - 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 */ 381char * 382netname(sa) 383 struct sockaddr *sa; 384{ 385 char *cp = 0; 386 static char line[MAXHOSTNAMELEN + 1]; 387 struct netent *np = 0; 388 u_long net, mask; 389 register u_long i; 390 int subnetshift; 391#ifdef NS 392 char *ns_print(); 393#endif 394 395 switch (sa->sa_family) { 396 397 case AF_INET: 398 { struct in_addr in; 399 in = ((struct sockaddr_in *)sa)->sin_addr; 400 401 i = in.s_addr = ntohl(in.s_addr); 402 if (in.s_addr == 0) 403 cp = "default"; 404 else if (!nflag) { 405 if (IN_CLASSA(i)) { 406 mask = IN_CLASSA_NET; 407 subnetshift = 8; 408 } else if (IN_CLASSB(i)) { 409 mask = IN_CLASSB_NET; 410 subnetshift = 8; 411 } else { 412 mask = IN_CLASSC_NET; 413 subnetshift = 4; 414 } 415 /* 416 * If there are more bits than the standard mask 417 * would suggest, subnets must be in use. 418 * Guess at the subnet mask, assuming reasonable 419 * width subnet fields. 420 */ 421 while (in.s_addr &~ mask) 422 mask = (long)mask >> subnetshift; 423 net = in.s_addr & mask; 424 while ((mask & 1) == 0) 425 mask >>= 1, net >>= 1; 426 np = getnetbyaddr(net, AF_INET); 427 if (np) 428 cp = np->n_name; 429 } 430 if (cp) 431 strncpy(line, cp, sizeof(line)); 432 else if ((in.s_addr & 0xffffff) == 0) 433 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 434 else if ((in.s_addr & 0xffff) == 0) 435 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 436 C(in.s_addr >> 16)); 437 else if ((in.s_addr & 0xff) == 0) 438 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 439 C(in.s_addr >> 16), C(in.s_addr >> 8)); 440 else 441 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 442 C(in.s_addr >> 16), C(in.s_addr >> 8), 443 C(in.s_addr)); 444 break; 445 } 446 447 case AF_APPLETALK: 448 (void) snprintf(line, sizeof(line), "atalk %s", 449 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 450 break; 451 452#ifdef NS 453 case AF_NS: 454 return (ns_print((struct sockaddr_ns *)sa)); 455 break; 456#endif 457 458 case AF_LINK: 459 return (link_ntoa((struct sockaddr_dl *)sa)); 460 461 462 default: 463 { u_short *s = (u_short *)sa->sa_data; 464 u_short *slim = s + ((sa->sa_len + 1)>>1); 465 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 466 char *cpe = line + sizeof(line); 467 468 while (s < slim && cp < cpe) 469 cp += snprintf(cp, cpe - cp, " %x", *s++); 470 break; 471 } 472 } 473 return (line); 474} 475 476void 477set_metric(value, key) 478 char *value; 479 int key; 480{ 481 int flag = 0; 482 u_long noval, *valp = &noval; 483 484 switch (key) { 485#define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 486 caseof(K_MTU, RTV_MTU, rmx_mtu); 487 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 488 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 489 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 490 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 491 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 492 caseof(K_RTT, RTV_RTT, rmx_rtt); 493 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 494 } 495 rtm_inits |= flag; 496 if (lockrest || locking) 497 rt_metrics.rmx_locks |= flag; 498 if (locking) 499 locking = 0; 500 *valp = atoi(value); 501} 502 503void 504newroute(argc, argv) 505 int argc; 506 register char **argv; 507{ 508 char *cmd, *dest = "", *gateway = "", *err; 509 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 510 int key; 511 struct hostent *hp = 0; 512 513 if (uid) { 514 errx(EX_NOPERM, "must be root to alter routing table"); 515 } 516 cmd = argv[0]; 517 if (*cmd != 'g') 518 shutdown(s, 0); /* Don't want to read back our messages */ 519 while (--argc > 0) { 520 if (**(++argv)== '-') { 521 switch (key = keyword(1 + *argv)) { 522 case K_LINK: 523 af = AF_LINK; 524 aflen = sizeof(struct sockaddr_dl); 525 break; 526 case K_INET: 527 af = AF_INET; 528 aflen = sizeof(struct sockaddr_in); 529 break; 530 case K_ATALK: 531 af = AF_APPLETALK; 532 aflen = sizeof(struct sockaddr_at); 533 break; 534 case K_SA: 535 af = PF_ROUTE; 536 aflen = sizeof(union sockunion); 537 break; 538#ifdef NS 539 case K_XNS: 540 af = AF_NS; 541 aflen = sizeof(struct sockaddr_ns); 542 break; 543#endif 544 case K_IFACE: 545 case K_INTERFACE: 546 iflag++; 547 break; 548 case K_NOSTATIC: 549 flags &= ~RTF_STATIC; 550 break; 551 case K_LLINFO: 552 flags |= RTF_LLINFO; 553 break; 554 case K_LOCK: 555 locking = 1; 556 break; 557 case K_LOCKREST: 558 lockrest = 1; 559 break; 560 case K_HOST: 561 forcehost++; 562 break; 563 case K_REJECT: 564 flags |= RTF_REJECT; 565 break; 566 case K_BLACKHOLE: 567 flags |= RTF_BLACKHOLE; 568 break; 569 case K_PROTO1: 570 flags |= RTF_PROTO1; 571 break; 572 case K_PROTO2: 573 flags |= RTF_PROTO2; 574 break; 575 case K_CLONING: 576 flags |= RTF_CLONING; 577 break; 578 case K_XRESOLVE: 579 flags |= RTF_XRESOLVE; 580 break; 581 case K_STATIC: 582 flags |= RTF_STATIC; 583 break; 584 case K_IFA: 585 if (!--argc) 586 usage((char *)NULL); 587 (void) getaddr(RTA_IFA, *++argv, 0); 588 break; 589 case K_IFP: 590 if (!--argc) 591 usage((char *)NULL); 592 (void) getaddr(RTA_IFP, *++argv, 0); 593 break; 594 case K_GENMASK: 595 if (!--argc) 596 usage((char *)NULL); 597 (void) getaddr(RTA_GENMASK, *++argv, 0); 598 break; 599 case K_GATEWAY: 600 if (!--argc) 601 usage((char *)NULL); 602 (void) getaddr(RTA_GATEWAY, *++argv, 0); 603 break; 604 case K_DST: 605 if (!--argc) 606 usage((char *)NULL); 607 ishost = getaddr(RTA_DST, *++argv, &hp); 608 dest = *argv; 609 break; 610 case K_NETMASK: 611 if (!--argc) 612 usage((char *)NULL); 613 (void) getaddr(RTA_NETMASK, *++argv, 0); 614 /* FALLTHROUGH */ 615 case K_NET: 616 forcenet++; 617 break; 618 case K_MTU: 619 case K_HOPCOUNT: 620 case K_EXPIRE: 621 case K_RECVPIPE: 622 case K_SENDPIPE: 623 case K_SSTHRESH: 624 case K_RTT: 625 case K_RTTVAR: 626 if (!--argc) 627 usage((char *)NULL); 628 set_metric(*++argv, key); 629 break; 630 default: 631 usage(1+*argv); 632 } 633 } else { 634 if ((rtm_addrs & RTA_DST) == 0) { 635 dest = *argv; 636 ishost = getaddr(RTA_DST, *argv, &hp); 637 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 638 gateway = *argv; 639 (void) getaddr(RTA_GATEWAY, *argv, &hp); 640 } else { 641 (void) getaddr(RTA_NETMASK, *argv, 0); 642 } 643 } 644 } 645 if (forcehost) 646 ishost = 1; 647 if (forcenet) 648 ishost = 0; 649 flags |= RTF_UP; 650 if (ishost) 651 flags |= RTF_HOST; 652 if (iflag == 0) 653 flags |= RTF_GATEWAY; 654 for (attempts = 1; ; attempts++) { 655 errno = 0; 656 if ((ret = rtmsg(*cmd, flags)) == 0) 657 break; 658 if (errno != ENETUNREACH && errno != ESRCH) 659 break; 660 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 661 hp->h_addr_list++; 662 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr, 663 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 664 } else 665 break; 666 } 667 if (*cmd == 'g') 668 exit(0); 669 oerrno = errno; 670 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 671 if (*gateway) { 672 (void) printf(": gateway %s", gateway); 673 if (attempts > 1 && ret == 0 && af == AF_INET) 674 (void) printf(" (%s)", 675 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 676 } 677 if (ret == 0) 678 (void) printf("\n"); 679 else { 680 switch (oerrno) { 681 case ESRCH: 682 err = "not in table"; 683 break; 684 case EBUSY: 685 err = "entry in use"; 686 break; 687 case ENOBUFS: 688 err = "routing table overflow"; 689 break; 690 default: 691 err = strerror(oerrno); 692 break; 693 } 694 (void) printf(": %s\n", err); 695 } 696} 697 698void 699inet_makenetandmask(net, sin, bits) 700 u_long net, bits; 701 register struct sockaddr_in *sin; 702{ 703 u_long addr, mask = 0; 704 register char *cp; 705 706 rtm_addrs |= RTA_NETMASK; 707 if (net == 0) 708 mask = addr = 0; 709 else if (bits) { 710 addr = net; 711 mask = 0xffffffff << (32 - bits); 712 } else if (net < 128) { 713 addr = net << IN_CLASSA_NSHIFT; 714 mask = IN_CLASSA_NET; 715 } else if (net < 65536) { 716 addr = net << IN_CLASSB_NSHIFT; 717 mask = IN_CLASSB_NET; 718 } else if (net < 16777216L) { 719 addr = net << IN_CLASSC_NSHIFT; 720 mask = IN_CLASSC_NET; 721 } else { 722 addr = net; 723 if ((addr & IN_CLASSA_HOST) == 0) 724 mask = IN_CLASSA_NET; 725 else if ((addr & IN_CLASSB_HOST) == 0) 726 mask = IN_CLASSB_NET; 727 else if ((addr & IN_CLASSC_HOST) == 0) 728 mask = IN_CLASSC_NET; 729 else 730 mask = -1; 731 } 732 sin->sin_addr.s_addr = htonl(addr); 733 sin = &so_mask.sin; 734 sin->sin_addr.s_addr = htonl(mask); 735 sin->sin_len = 0; 736 sin->sin_family = 0; 737 cp = (char *)(&sin->sin_addr + 1); 738 while (*--cp == 0 && cp > (char *)sin) 739 ; 740 sin->sin_len = 1 + cp - (char *)sin; 741} 742 743/* 744 * Interpret an argument as a network address of some kind, 745 * returning 1 if a host address, 0 if a network address. 746 */ 747int 748getaddr(which, s, hpp) 749 int which; 750 char *s; 751 struct hostent **hpp; 752{ 753 register sup su; 754#ifdef NS 755 struct ns_addr ns_addr(); 756#endif 757 struct hostent *hp; 758 struct netent *np; 759 u_long val; 760 char *q,qs; 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 break; 771 case RTA_GATEWAY: 772 su = &so_gate; 773 if (iflag) { 774 #define MAX_IFACES 400 775 int sock; 776 struct ifreq iflist[MAX_IFACES]; 777 struct ifconf ifconf; 778 struct ifreq *ifr, *ifr_end; 779 struct sockaddr_dl *dl, *sdl = NULL; 780 781 /* Get socket */ 782 if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0) 783 err(1, "socket"); 784 785 /* Get interface list */ 786 ifconf.ifc_req = iflist; 787 ifconf.ifc_len = sizeof(iflist); 788 if (ioctl(sock, SIOCGIFCONF, &ifconf) < 0) 789 err(1, "ioctl(SIOCGIFCONF)"); 790 close(sock); 791 792 /* Look for this interface in the list */ 793 for (ifr = ifconf.ifc_req, 794 ifr_end = (struct ifreq *) 795 (ifconf.ifc_buf + ifconf.ifc_len); 796 ifr < ifr_end; 797 ifr = (struct ifreq *) ((char *) &ifr->ifr_addr 798 + MAX(ifr->ifr_addr.sa_len, 799 sizeof(ifr->ifr_addr)))) { 800 dl = (struct sockaddr_dl *)&ifr->ifr_addr; 801 if (ifr->ifr_addr.sa_family == AF_LINK 802 && (ifr->ifr_flags & IFF_POINTOPOINT) 803 && !strncmp(s, dl->sdl_data, dl->sdl_nlen) 804 && s[dl->sdl_nlen] == 0) { 805 sdl = dl; 806 break; 807 } 808 } 809 810 /* If we found it, then use it */ 811 if (sdl) { 812 su->sdl = *sdl; 813 return(1); 814 } 815 } 816 break; 817 case RTA_NETMASK: 818 su = &so_mask; 819 break; 820 case RTA_GENMASK: 821 su = &so_genmask; 822 break; 823 case RTA_IFP: 824 su = &so_ifp; 825 break; 826 case RTA_IFA: 827 su = &so_ifa; 828 break; 829 default: 830 usage("internal error"); 831 /*NOTREACHED*/ 832 } 833 su->sa.sa_len = aflen; 834 su->sa.sa_family = af; /* cases that don't want it have left already */ 835 if (strcmp(s, "default") == 0) { 836 /* 837 * Default is net 0.0.0.0/0 838 */ 839 switch (which) { 840 case RTA_DST: 841 forcenet++; 842 /* bzero(su, sizeof(*su)); *//* for readability */ 843 (void) getaddr(RTA_NETMASK, s, 0); 844 break; 845 case RTA_NETMASK: 846 case RTA_GENMASK: 847 /* bzero(su, sizeof(*su)); *//* for readability */ 848 } 849 return (0); 850 } 851 switch (af) { 852#ifdef NS 853 case AF_NS: 854 if (which == RTA_DST) { 855 extern short ns_bh[3]; 856 struct sockaddr_ns *sms = &(so_mask.sns); 857 bzero((char *)sms, sizeof(*sms)); 858 sms->sns_family = 0; 859 sms->sns_len = 6; 860 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 861 rtm_addrs |= RTA_NETMASK; 862 } 863 su->sns.sns_addr = ns_addr(s); 864 return (!ns_nullhost(su->sns.sns_addr)); 865#endif 866 867 868 case AF_APPLETALK: 869 if (!atalk_aton(s, &su->sat.sat_addr)) 870 errx(EX_NOHOST, "bad address: %s", s); 871 rtm_addrs |= RTA_NETMASK; 872 return(forcehost || su->sat.sat_addr.s_node != 0); 873 874 case AF_LINK: 875 link_addr(s, &su->sdl); 876 return (1); 877 878 879 case PF_ROUTE: 880 su->sa.sa_len = sizeof(*su); 881 sockaddr(s, &su->sa); 882 return (1); 883 884 case AF_INET: 885 default: 886 break; 887 } 888 889 if (hpp == NULL) 890 hpp = &hp; 891 *hpp = NULL; 892 893 q = strchr(s,'/'); 894 if (q && which == RTA_DST) { 895 qs = *q; 896 *q = '\0'; 897 if (((val = inet_addr(s)) != INADDR_NONE)) { 898 inet_makenetandmask( 899 htonl(val), &su->sin, strtoul(q+1, 0, 0)); 900 return (0); 901 } 902 *q =qs; 903 } 904 if (((val = inet_addr(s)) != INADDR_NONE) && 905 (which != RTA_DST || forcenet == 0)) { 906 su->sin.sin_addr.s_addr = val; 907 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 908 return (1); 909 else { 910 val = ntohl(val); 911 goto netdone; 912 } 913 } 914 if ((val = inet_network(s)) != INADDR_NONE || 915 (forcehost == 0 && (np = getnetbyname(s)) != NULL && 916 (val = np->n_net) != 0)) { 917netdone: 918 if (which == RTA_DST) 919 inet_makenetandmask(val, &su->sin, 0); 920 return (0); 921 } 922 hp = gethostbyname(s); 923 if (hp) { 924 *hpp = hp; 925 su->sin.sin_family = hp->h_addrtype; 926 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, 927 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 928 return (1); 929 } 930 errx(EX_NOHOST, "bad address: %s", s); 931} 932 933 934#ifdef NS 935short ns_nullh[] = {0,0,0}; 936short ns_bh[] = {-1,-1,-1}; 937 938char * 939ns_print(sns) 940 struct sockaddr_ns *sns; 941{ 942 struct ns_addr work; 943 union { union ns_net net_e; u_long long_e; } net; 944 u_short port; 945 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 946 char *host = ""; 947 register char *p; 948 register u_char *q; 949 950 work = sns->sns_addr; 951 port = ntohs(work.x_port); 952 work.x_port = 0; 953 net.net_e = work.x_net; 954 if (ns_nullhost(work) && net.long_e == 0) { 955 if (!port) 956 return ("*.*"); 957 (void) sprintf(mybuf, "*.%XH", port); 958 return (mybuf); 959 } 960 961 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0) 962 host = "any"; 963 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0) 964 host = "*"; 965 else { 966 q = work.x_host.c_host; 967 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 968 q[0], q[1], q[2], q[3], q[4], q[5]); 969 for (p = chost; *p == '0' && p < chost + 12; p++) 970 /* void */; 971 host = p; 972 } 973 if (port) 974 (void) sprintf(cport, ".%XH", htons(port)); 975 else 976 *cport = 0; 977 978 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 979 (unsigned long)ntohl(net.long_e), 980 host, cport); 981 return (mybuf); 982} 983#endif 984 985void 986interfaces() 987{ 988 size_t needed; 989 int mib[6]; 990 char *buf, *lim, *next; 991 register struct rt_msghdr *rtm; 992 993 mib[0] = CTL_NET; 994 mib[1] = PF_ROUTE; 995 mib[2] = 0; /* protocol */ 996 mib[3] = 0; /* wildcard address family */ 997 mib[4] = NET_RT_IFLIST; 998 mib[5] = 0; /* no flags */ 999 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1000 err(EX_OSERR, "route-sysctl-estimate"); 1001 if ((buf = malloc(needed)) == NULL) 1002 errx(EX_OSERR, "malloc failed"); 1003 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1004 err(EX_OSERR, "actual retrieval of interface table"); 1005 lim = buf + needed; 1006 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1007 rtm = (struct rt_msghdr *)next; 1008 print_rtmsg(rtm, rtm->rtm_msglen); 1009 } 1010} 1011 1012void 1013monitor() 1014{ 1015 int n; 1016 char msg[2048]; 1017 1018 verbose = 1; 1019 if (debugonly) { 1020 interfaces(); 1021 exit(0); 1022 } 1023 for(;;) { 1024 n = read(s, msg, 2048); 1025 (void) printf("got message of size %d\n", n); 1026 print_rtmsg((struct rt_msghdr *)msg, n); 1027 } 1028} 1029 1030struct { 1031 struct rt_msghdr m_rtm; 1032 char m_space[512]; 1033} m_rtmsg; 1034 1035int 1036rtmsg(cmd, flags) 1037 int cmd, flags; 1038{ 1039 static int seq; 1040 int rlen; 1041 register char *cp = m_rtmsg.m_space; 1042 register int l; 1043 1044#define NEXTADDR(w, u) \ 1045 if (rtm_addrs & (w)) {\ 1046 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 1047 if (verbose) sodump(&(u),"u");\ 1048 } 1049 1050 errno = 0; 1051 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 1052 if (cmd == 'a') 1053 cmd = RTM_ADD; 1054 else if (cmd == 'c') 1055 cmd = RTM_CHANGE; 1056 else if (cmd == 'g') { 1057 cmd = RTM_GET; 1058 if (so_ifp.sa.sa_family == 0) { 1059 so_ifp.sa.sa_family = AF_LINK; 1060 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1061 rtm_addrs |= RTA_IFP; 1062 } 1063 } else 1064 cmd = RTM_DELETE; 1065#define rtm m_rtmsg.m_rtm 1066 rtm.rtm_type = cmd; 1067 rtm.rtm_flags = flags; 1068 rtm.rtm_version = RTM_VERSION; 1069 rtm.rtm_seq = ++seq; 1070 rtm.rtm_addrs = rtm_addrs; 1071 rtm.rtm_rmx = rt_metrics; 1072 rtm.rtm_inits = rtm_inits; 1073 1074 if (rtm_addrs & RTA_NETMASK) 1075 mask_addr(); 1076 NEXTADDR(RTA_DST, so_dst); 1077 NEXTADDR(RTA_GATEWAY, so_gate); 1078 NEXTADDR(RTA_NETMASK, so_mask); 1079 NEXTADDR(RTA_GENMASK, so_genmask); 1080 NEXTADDR(RTA_IFP, so_ifp); 1081 NEXTADDR(RTA_IFA, so_ifa); 1082 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1083 if (verbose) 1084 print_rtmsg(&rtm, l); 1085 if (debugonly) 1086 return (0); 1087 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1088 warn("writing to routing socket"); 1089 return (-1); 1090 } 1091 if (cmd == RTM_GET) { 1092 do { 1093 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1094 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1095 if (l < 0) 1096 warn("read from routing socket"); 1097 else 1098 print_getmsg(&rtm, l); 1099 } 1100#undef rtm 1101 return (0); 1102} 1103 1104void 1105mask_addr() 1106{ 1107 int olen = so_mask.sa.sa_len; 1108 register char *cp1 = olen + (char *)&so_mask, *cp2; 1109 1110 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1111 if (*--cp1 != 0) { 1112 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1113 break; 1114 } 1115 if ((rtm_addrs & RTA_DST) == 0) 1116 return; 1117 switch (so_dst.sa.sa_family) { 1118#ifdef NS 1119 case AF_NS: 1120#endif 1121 case AF_INET: 1122 case AF_APPLETALK: 1123 case 0: 1124 return; 1125 } 1126 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1127 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1128 while (cp2 > cp1) 1129 *--cp2 = 0; 1130 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1131 while (cp1 > so_dst.sa.sa_data) 1132 *--cp1 &= *--cp2; 1133} 1134 1135char *msgtypes[] = { 1136 "", 1137 "RTM_ADD: Add Route", 1138 "RTM_DELETE: Delete Route", 1139 "RTM_CHANGE: Change Metrics or flags", 1140 "RTM_GET: Report Metrics", 1141 "RTM_LOSING: Kernel Suspects Partitioning", 1142 "RTM_REDIRECT: Told to use different route", 1143 "RTM_MISS: Lookup failed on this address", 1144 "RTM_LOCK: fix specified metrics", 1145 "RTM_OLDADD: caused by SIOCADDRT", 1146 "RTM_OLDDEL: caused by SIOCDELRT", 1147 "RTM_RESOLVE: Route created by cloning", 1148 "RTM_NEWADDR: address being added to iface", 1149 "RTM_DELADDR: address being removed from iface", 1150 "RTM_IFINFO: iface status change", 1151 "RTM_NEWMADDR: new multicast group membership on iface", 1152 "RTM_DELMADDR: multicast group membership removed from iface", 1153 0, 1154}; 1155 1156char metricnames[] = 1157"\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1158"\1mtu"; 1159char routeflags[] = 1160"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1161"\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1162"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1163"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1164char ifnetflags[] = 1165"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1166"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1167"\017LINK2\020MULTICAST"; 1168char addrnames[] = 1169"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1170 1171void 1172print_rtmsg(rtm, msglen) 1173 register struct rt_msghdr *rtm; 1174 int msglen; 1175{ 1176 struct if_msghdr *ifm; 1177 struct ifa_msghdr *ifam; 1178#ifdef RTM_NEWMADDR 1179 struct ifma_msghdr *ifmam; 1180#endif 1181 1182 if (verbose == 0) 1183 return; 1184 if (rtm->rtm_version != RTM_VERSION) { 1185 (void) printf("routing message version %d not understood\n", 1186 rtm->rtm_version); 1187 return; 1188 } 1189 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1190 switch (rtm->rtm_type) { 1191 case RTM_IFINFO: 1192 ifm = (struct if_msghdr *)rtm; 1193 (void) printf("if# %d, flags:", ifm->ifm_index); 1194 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1195 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1196 break; 1197 case RTM_NEWADDR: 1198 case RTM_DELADDR: 1199 ifam = (struct ifa_msghdr *)rtm; 1200 (void) printf("metric %d, flags:", ifam->ifam_metric); 1201 bprintf(stdout, ifam->ifam_flags, routeflags); 1202 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1203 break; 1204#ifdef RTM_NEWMADDR 1205 case RTM_NEWMADDR: 1206 case RTM_DELMADDR: 1207 ifmam = (struct ifma_msghdr *)rtm; 1208 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1209 break; 1210#endif 1211 default: 1212 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1213 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1214 bprintf(stdout, rtm->rtm_flags, routeflags); 1215 pmsg_common(rtm); 1216 } 1217} 1218 1219void 1220print_getmsg(rtm, msglen) 1221 register struct rt_msghdr *rtm; 1222 int msglen; 1223{ 1224 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1225 struct sockaddr_dl *ifp = NULL; 1226 register struct sockaddr *sa; 1227 register char *cp; 1228 register int i; 1229 1230 (void) printf(" route to: %s\n", routename(&so_dst)); 1231 if (rtm->rtm_version != RTM_VERSION) { 1232 warnx("routing message version %d not understood", 1233 rtm->rtm_version); 1234 return; 1235 } 1236 if (rtm->rtm_msglen > msglen) { 1237 warnx("message length mismatch, in packet %d, returned %d", 1238 rtm->rtm_msglen, msglen); 1239 } 1240 if (rtm->rtm_errno) { 1241 errno = rtm->rtm_errno; 1242 warn("message indicates error %d", errno); 1243 return; 1244 } 1245 cp = ((char *)(rtm + 1)); 1246 if (rtm->rtm_addrs) 1247 for (i = 1; i; i <<= 1) 1248 if (i & rtm->rtm_addrs) { 1249 sa = (struct sockaddr *)cp; 1250 switch (i) { 1251 case RTA_DST: 1252 dst = sa; 1253 break; 1254 case RTA_GATEWAY: 1255 gate = sa; 1256 break; 1257 case RTA_NETMASK: 1258 mask = sa; 1259 break; 1260 case RTA_IFP: 1261 if (sa->sa_family == AF_LINK && 1262 ((struct sockaddr_dl *)sa)->sdl_nlen) 1263 ifp = (struct sockaddr_dl *)sa; 1264 break; 1265 } 1266 ADVANCE(cp, sa); 1267 } 1268 if (dst && mask) 1269 mask->sa_family = dst->sa_family; /* XXX */ 1270 if (dst) 1271 (void)printf("destination: %s\n", routename(dst)); 1272 if (mask) { 1273 int savenflag = nflag; 1274 1275 nflag = 1; 1276 (void)printf(" mask: %s\n", routename(mask)); 1277 nflag = savenflag; 1278 } 1279 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1280 (void)printf(" gateway: %s\n", routename(gate)); 1281 if (ifp) 1282 (void)printf(" interface: %.*s\n", 1283 ifp->sdl_nlen, ifp->sdl_data); 1284 (void)printf(" flags: "); 1285 bprintf(stdout, rtm->rtm_flags, routeflags); 1286 1287#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1288#define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1289 1290 (void) printf("\n%s\n", "\ 1291 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1292 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1293 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1294 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1295 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1296 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1297 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1298 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1299 if (rtm->rtm_rmx.rmx_expire) 1300 rtm->rtm_rmx.rmx_expire -= time(0); 1301 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1302#undef lock 1303#undef msec 1304#define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1305 if (verbose) 1306 pmsg_common(rtm); 1307 else if (rtm->rtm_addrs &~ RTA_IGN) { 1308 (void) printf("sockaddrs: "); 1309 bprintf(stdout, rtm->rtm_addrs, addrnames); 1310 putchar('\n'); 1311 } 1312#undef RTA_IGN 1313} 1314 1315void 1316pmsg_common(rtm) 1317 register struct rt_msghdr *rtm; 1318{ 1319 (void) printf("\nlocks: "); 1320 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1321 (void) printf(" inits: "); 1322 bprintf(stdout, rtm->rtm_inits, metricnames); 1323 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1324} 1325 1326void 1327pmsg_addrs(cp, addrs) 1328 char *cp; 1329 int addrs; 1330{ 1331 register struct sockaddr *sa; 1332 int i; 1333 1334 if (addrs == 0) 1335 return; 1336 (void) printf("\nsockaddrs: "); 1337 bprintf(stdout, addrs, addrnames); 1338 (void) putchar('\n'); 1339 for (i = 1; i; i <<= 1) 1340 if (i & addrs) { 1341 sa = (struct sockaddr *)cp; 1342 (void) printf(" %s", routename(sa)); 1343 ADVANCE(cp, sa); 1344 } 1345 (void) putchar('\n'); 1346 (void) fflush(stdout); 1347} 1348 1349void 1350bprintf(fp, b, s) 1351 register FILE *fp; 1352 register int b; 1353 register u_char *s; 1354{ 1355 register int i; 1356 int gotsome = 0; 1357 1358 if (b == 0) 1359 return; 1360 while ((i = *s++) != 0) { 1361 if (b & (1 << (i-1))) { 1362 if (gotsome == 0) 1363 i = '<'; 1364 else 1365 i = ','; 1366 (void) putc(i, fp); 1367 gotsome = 1; 1368 for (; (i = *s) > 32; s++) 1369 (void) putc(i, fp); 1370 } else 1371 while (*s > 32) 1372 s++; 1373 } 1374 if (gotsome) 1375 (void) putc('>', fp); 1376} 1377 1378int 1379keyword(cp) 1380 char *cp; 1381{ 1382 register struct keytab *kt = keywords; 1383 1384 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1385 kt++; 1386 return kt->kt_i; 1387} 1388 1389void 1390sodump(su, which) 1391 register sup su; 1392 char *which; 1393{ 1394 switch (su->sa.sa_family) { 1395 case AF_LINK: 1396 (void) printf("%s: link %s; ", 1397 which, link_ntoa(&su->sdl)); 1398 break; 1399 case AF_INET: 1400 (void) printf("%s: inet %s; ", 1401 which, inet_ntoa(su->sin.sin_addr)); 1402 break; 1403 case AF_APPLETALK: 1404 (void) printf("%s: atalk %s; ", 1405 which, atalk_ntoa(su->sat.sat_addr)); 1406 break; 1407#ifdef NS 1408 case AF_NS: 1409 (void) printf("%s: xns %s; ", 1410 which, ns_ntoa(su->sns.sns_addr)); 1411 break; 1412#endif 1413 } 1414 (void) fflush(stdout); 1415} 1416 1417/* States*/ 1418#define VIRGIN 0 1419#define GOTONE 1 1420#define GOTTWO 2 1421/* Inputs */ 1422#define DIGIT (4*0) 1423#define END (4*1) 1424#define DELIM (4*2) 1425 1426void 1427sockaddr(addr, sa) 1428 register char *addr; 1429 register struct sockaddr *sa; 1430{ 1431 register char *cp = (char *)sa; 1432 int size = sa->sa_len; 1433 char *cplim = cp + size; 1434 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1435 1436 bzero(cp, size); 1437 cp++; 1438 do { 1439 if ((*addr >= '0') && (*addr <= '9')) { 1440 new = *addr - '0'; 1441 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1442 new = *addr - 'a' + 10; 1443 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1444 new = *addr - 'A' + 10; 1445 } else if (*addr == 0) 1446 state |= END; 1447 else 1448 state |= DELIM; 1449 addr++; 1450 switch (state /* | INPUT */) { 1451 case GOTTWO | DIGIT: 1452 *cp++ = byte; /*FALLTHROUGH*/ 1453 case VIRGIN | DIGIT: 1454 state = GOTONE; byte = new; continue; 1455 case GOTONE | DIGIT: 1456 state = GOTTWO; byte = new + (byte << 4); continue; 1457 default: /* | DELIM */ 1458 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1459 case GOTONE | END: 1460 case GOTTWO | END: 1461 *cp++ = byte; /* FALLTHROUGH */ 1462 case VIRGIN | END: 1463 break; 1464 } 1465 break; 1466 } while (cp < cplim); 1467 sa->sa_len = cp - (char *)sa; 1468} 1469 1470int 1471atalk_aton(const char *text, struct at_addr *addr) 1472{ 1473 u_int net, node; 1474 1475 if (sscanf(text, "%u.%u", &net, &node) != 2 1476 || net > 0xffff || node > 0xff) 1477 return(0); 1478 addr->s_net = htons(net); 1479 addr->s_node = node; 1480 return(1); 1481} 1482 1483char * 1484atalk_ntoa(struct at_addr at) 1485{ 1486 static char buf[20]; 1487 1488 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1489 return(buf); 1490} 1491