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 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 /* 43 static char sccsid[] = "@(#)route.c 8.3 (Berkeley) 3/19/94"; 44 */ 45 static const char rcsid[] = 46 "$Id: route.c,v 1.23 1997/04/02 16:52:45 phk 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 #include <arpa/inet.h> 65 #include <netdb.h> 66 67 #include <ctype.h> 68 #include <err.h> 69 #include <errno.h> 70 #include <paths.h> 71 #include <stdio.h> 72 #include <stdlib.h> 73 #include <string.h> 74 #include <sysexits.h> 75 #include <time.h> 76 #include <unistd.h> 77 78 struct keytab { 79 char *kt_cp; 80 int kt_i; 81 } keywords[] = { 82 #include "keywords.h" 83 {0, 0} 84 }; 85 86 struct ortentry route; 87 union sockunion { 88 struct sockaddr sa; 89 struct sockaddr_in sin; 90 struct sockaddr_at sat; 91 #ifdef NS 92 struct sockaddr_ns sns; 93 #endif 94 struct sockaddr_dl sdl; 95 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 96 97 typedef union sockunion *sup; 98 int pid, rtm_addrs, uid; 99 int s; 100 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 101 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 102 int locking, lockrest, debugonly; 103 struct rt_metrics rt_metrics; 104 u_long rtm_inits; 105 struct in_addr inet_makeaddr(); 106 int atalk_aton __P((const char *, struct at_addr *)); 107 char *atalk_ntoa __P((struct at_addr)); 108 char *routename(), *netname(); 109 void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 110 void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 111 int getaddr(), rtmsg(), x25_makemask(); 112 extern char *inet_ntoa(), *iso_ntoa(), *link_ntoa(); 113 114 void usage __P((const char *)) __dead2; 115 116 void 117 usage(cp) 118 const char *cp; 119 { 120 if (cp) 121 warnx("bad keyword: %s", cp); 122 (void) fprintf(stderr, 123 "usage: route [ -nqv ] cmd [[ -<qualifers> ] args ]\n"); 124 exit(EX_USAGE); 125 /* NOTREACHED */ 126 } 127 128 #define ROUNDUP(a) \ 129 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 130 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 131 132 int 133 main(argc, argv) 134 int argc; 135 char **argv; 136 { 137 extern int optind; 138 int ch; 139 140 if (argc < 2) 141 usage((char *)NULL); 142 143 while ((ch = getopt(argc, argv, "nqdtv")) != EOF) 144 switch(ch) { 145 case 'n': 146 nflag = 1; 147 break; 148 case 'q': 149 qflag = 1; 150 break; 151 case 'v': 152 verbose = 1; 153 break; 154 case 't': 155 tflag = 1; 156 break; 157 case 'd': 158 debugonly = 1; 159 break; 160 case '?': 161 default: 162 usage((char *)NULL); 163 } 164 argc -= optind; 165 argv += optind; 166 167 pid = getpid(); 168 uid = getuid(); 169 if (tflag) 170 s = open("/dev/null", O_WRONLY, 0); 171 else 172 s = socket(PF_ROUTE, SOCK_RAW, 0); 173 if (s < 0) 174 err(EX_OSERR, "socket"); 175 setuid(uid); 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 errx(EX_NOPERM, "must be root to alter routing table"); 218 } 219 shutdown(s, 0); /* Don't want to read back our messages */ 220 if (argc > 1) { 221 argv++; 222 if (argc == 2 && **argv == '-') 223 switch (keyword(*argv + 1)) { 224 case K_INET: 225 af = AF_INET; 226 break; 227 case K_ATALK: 228 af = AF_APPLETALK; 229 break; 230 #ifdef NS 231 case K_XNS: 232 af = AF_NS; 233 break; 234 #endif 235 case K_LINK: 236 af = AF_LINK; 237 break; 238 default: 239 goto bad; 240 } else 241 bad: usage(*argv); 242 } 243 mib[0] = CTL_NET; 244 mib[1] = PF_ROUTE; 245 mib[2] = 0; /* protocol */ 246 mib[3] = 0; /* wildcard address family */ 247 mib[4] = NET_RT_DUMP; 248 mib[5] = 0; /* no flags */ 249 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 250 err(EX_OSERR, "route-sysctl-estimate"); 251 if ((buf = malloc(needed)) == NULL) 252 err(EX_OSERR, "malloc"); 253 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 254 err(EX_OSERR, "route-sysctl-get"); 255 lim = buf + needed; 256 if (verbose) 257 (void) printf("Examining routing table from sysctl\n"); 258 seqno = 0; /* ??? */ 259 for (next = buf; next < lim; next += rtm->rtm_msglen) { 260 rtm = (struct rt_msghdr *)next; 261 if (verbose) 262 print_rtmsg(rtm, rtm->rtm_msglen); 263 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 264 continue; 265 if (af) { 266 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 267 268 if (sa->sa_family != af) 269 continue; 270 } 271 if (debugonly) 272 continue; 273 rtm->rtm_type = RTM_DELETE; 274 rtm->rtm_seq = seqno; 275 rlen = write(s, next, rtm->rtm_msglen); 276 if (rlen < (int)rtm->rtm_msglen) { 277 warn("write to routing socket"); 278 (void) printf("got only %d for rlen\n", rlen); 279 break; 280 } 281 seqno++; 282 if (qflag) 283 continue; 284 if (verbose) 285 print_rtmsg(rtm, rlen); 286 else { 287 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 288 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 289 routename(sa) : netname(sa)); 290 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 291 (void) printf("%-20.20s ", routename(sa)); 292 (void) printf("done\n"); 293 } 294 } 295 } 296 297 char * 298 routename(sa) 299 struct sockaddr *sa; 300 { 301 register char *cp; 302 static char line[MAXHOSTNAMELEN + 1]; 303 struct hostent *hp; 304 static char domain[MAXHOSTNAMELEN + 1]; 305 static int first = 1; 306 #ifdef NS 307 char *ns_print(); 308 #endif 309 310 if (first) { 311 first = 0; 312 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 313 (cp = index(domain, '.'))) { 314 domain[MAXHOSTNAMELEN] = '\0'; 315 (void) strcpy(domain, cp + 1); 316 } else 317 domain[0] = 0; 318 } 319 320 if (sa->sa_len == 0) 321 strcpy(line, "default"); 322 else switch (sa->sa_family) { 323 324 case AF_INET: 325 { struct in_addr in; 326 in = ((struct sockaddr_in *)sa)->sin_addr; 327 328 cp = 0; 329 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 330 cp = "default"; 331 if (cp == 0 && !nflag) { 332 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 333 AF_INET); 334 if (hp) { 335 if ((cp = index(hp->h_name, '.')) && 336 !strcmp(cp + 1, domain)) 337 *cp = 0; 338 cp = hp->h_name; 339 } 340 } 341 if (cp) 342 strncpy(line, cp, sizeof line); 343 else { 344 /* XXX - why not inet_ntoa()? */ 345 #define C(x) (unsigned)((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_APPLETALK: 354 (void) snprintf(line, sizeof(line), "atalk %s", 355 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 356 break; 357 358 #ifdef NS 359 case AF_NS: 360 return (ns_print((struct sockaddr_ns *)sa)); 361 #endif 362 363 case AF_LINK: 364 return (link_ntoa((struct sockaddr_dl *)sa)); 365 366 default: 367 { u_short *s = (u_short *)sa; 368 u_short *slim = s + ((sa->sa_len + 1) >> 1); 369 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 370 char *cpe = line + sizeof(line); 371 372 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 373 cp += snprintf(cp, cpe - cp, " %x", *s); 374 break; 375 } 376 } 377 return (line); 378 } 379 380 /* 381 * Return the name of the network whose address is given. 382 * The address is assumed to be that of a net or subnet, not a host. 383 */ 384 char * 385 netname(sa) 386 struct sockaddr *sa; 387 { 388 char *cp = 0; 389 static char line[MAXHOSTNAMELEN + 1]; 390 struct netent *np = 0; 391 u_long net, mask; 392 register u_long i; 393 int subnetshift; 394 #ifdef NS 395 char *ns_print(); 396 #endif 397 398 switch (sa->sa_family) { 399 400 case AF_INET: 401 { struct in_addr in; 402 in = ((struct sockaddr_in *)sa)->sin_addr; 403 404 i = in.s_addr = ntohl(in.s_addr); 405 if (in.s_addr == 0) 406 cp = "default"; 407 else if (!nflag) { 408 if (IN_CLASSA(i)) { 409 mask = IN_CLASSA_NET; 410 subnetshift = 8; 411 } else if (IN_CLASSB(i)) { 412 mask = IN_CLASSB_NET; 413 subnetshift = 8; 414 } else { 415 mask = IN_CLASSC_NET; 416 subnetshift = 4; 417 } 418 /* 419 * If there are more bits than the standard mask 420 * would suggest, subnets must be in use. 421 * Guess at the subnet mask, assuming reasonable 422 * width subnet fields. 423 */ 424 while (in.s_addr &~ mask) 425 mask = (long)mask >> subnetshift; 426 net = in.s_addr & mask; 427 while ((mask & 1) == 0) 428 mask >>= 1, net >>= 1; 429 np = getnetbyaddr(net, AF_INET); 430 if (np) 431 cp = np->n_name; 432 } 433 if (cp) 434 strncpy(line, cp, sizeof(line)); 435 else if ((in.s_addr & 0xffffff) == 0) 436 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 437 else if ((in.s_addr & 0xffff) == 0) 438 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 439 C(in.s_addr >> 16)); 440 else if ((in.s_addr & 0xff) == 0) 441 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 442 C(in.s_addr >> 16), C(in.s_addr >> 8)); 443 else 444 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 445 C(in.s_addr >> 16), C(in.s_addr >> 8), 446 C(in.s_addr)); 447 break; 448 } 449 450 case AF_APPLETALK: 451 (void) snprintf(line, sizeof(line), "atalk %s", 452 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 453 break; 454 455 #ifdef NS 456 case AF_NS: 457 return (ns_print((struct sockaddr_ns *)sa)); 458 break; 459 #endif 460 461 case AF_LINK: 462 return (link_ntoa((struct sockaddr_dl *)sa)); 463 464 465 default: 466 { u_short *s = (u_short *)sa->sa_data; 467 u_short *slim = s + ((sa->sa_len + 1)>>1); 468 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 469 char *cpe = line + sizeof(line); 470 471 while (s < slim && cp < cpe) 472 cp += snprintf(cp, cpe - cp, " %x", *s++); 473 break; 474 } 475 } 476 return (line); 477 } 478 479 void 480 set_metric(value, key) 481 char *value; 482 int key; 483 { 484 int flag = 0; 485 u_long noval, *valp = &noval; 486 487 switch (key) { 488 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 489 caseof(K_MTU, RTV_MTU, rmx_mtu); 490 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 491 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 492 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 493 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 494 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 495 caseof(K_RTT, RTV_RTT, rmx_rtt); 496 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 497 } 498 rtm_inits |= flag; 499 if (lockrest || locking) 500 rt_metrics.rmx_locks |= flag; 501 if (locking) 502 locking = 0; 503 *valp = atoi(value); 504 } 505 506 void 507 newroute(argc, argv) 508 int argc; 509 register char **argv; 510 { 511 char *cmd, *dest = "", *gateway = "", *err; 512 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 513 int key; 514 struct hostent *hp = 0; 515 516 if (uid) { 517 errx(EX_NOPERM, "must be root to alter routing table"); 518 } 519 cmd = argv[0]; 520 if (*cmd != 'g') 521 shutdown(s, 0); /* Don't want to read back our messages */ 522 while (--argc > 0) { 523 if (**(++argv)== '-') { 524 switch (key = keyword(1 + *argv)) { 525 case K_LINK: 526 af = AF_LINK; 527 aflen = sizeof(struct sockaddr_dl); 528 break; 529 case K_INET: 530 af = AF_INET; 531 aflen = sizeof(struct sockaddr_in); 532 break; 533 case K_ATALK: 534 af = AF_APPLETALK; 535 aflen = sizeof(struct sockaddr_at); 536 break; 537 case K_SA: 538 af = PF_ROUTE; 539 aflen = sizeof(union sockunion); 540 break; 541 #ifdef NS 542 case K_XNS: 543 af = AF_NS; 544 aflen = sizeof(struct sockaddr_ns); 545 break; 546 #endif 547 case K_IFACE: 548 case K_INTERFACE: 549 iflag++; 550 break; 551 case K_NOSTATIC: 552 flags &= ~RTF_STATIC; 553 break; 554 case K_LLINFO: 555 flags |= RTF_LLINFO; 556 break; 557 case K_LOCK: 558 locking = 1; 559 break; 560 case K_LOCKREST: 561 lockrest = 1; 562 break; 563 case K_HOST: 564 forcehost++; 565 break; 566 case K_REJECT: 567 flags |= RTF_REJECT; 568 break; 569 case K_BLACKHOLE: 570 flags |= RTF_BLACKHOLE; 571 break; 572 case K_PROTO1: 573 flags |= RTF_PROTO1; 574 break; 575 case K_PROTO2: 576 flags |= RTF_PROTO2; 577 break; 578 case K_CLONING: 579 flags |= RTF_CLONING; 580 break; 581 case K_XRESOLVE: 582 flags |= RTF_XRESOLVE; 583 break; 584 case K_STATIC: 585 flags |= RTF_STATIC; 586 break; 587 case K_IFA: 588 argc--; 589 (void) getaddr(RTA_IFA, *++argv, 0); 590 break; 591 case K_IFP: 592 argc--; 593 (void) getaddr(RTA_IFP, *++argv, 0); 594 break; 595 case K_GENMASK: 596 argc--; 597 (void) getaddr(RTA_GENMASK, *++argv, 0); 598 break; 599 case K_GATEWAY: 600 argc--; 601 (void) getaddr(RTA_GATEWAY, *++argv, 0); 602 break; 603 case K_DST: 604 argc--; 605 ishost = getaddr(RTA_DST, *++argv, &hp); 606 dest = *argv; 607 break; 608 case K_NETMASK: 609 argc--; 610 (void) getaddr(RTA_NETMASK, *++argv, 0); 611 /* FALLTHROUGH */ 612 case K_NET: 613 forcenet++; 614 break; 615 case K_MTU: 616 case K_HOPCOUNT: 617 case K_EXPIRE: 618 case K_RECVPIPE: 619 case K_SENDPIPE: 620 case K_SSTHRESH: 621 case K_RTT: 622 case K_RTTVAR: 623 argc--; 624 set_metric(*++argv, key); 625 break; 626 default: 627 usage(1+*argv); 628 } 629 } else { 630 if ((rtm_addrs & RTA_DST) == 0) { 631 dest = *argv; 632 ishost = getaddr(RTA_DST, *argv, &hp); 633 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 634 gateway = *argv; 635 (void) getaddr(RTA_GATEWAY, *argv, &hp); 636 } else { 637 (void) getaddr(RTA_NETMASK, *argv, 0); 638 } 639 } 640 } 641 if (forcehost) 642 ishost = 1; 643 if (forcenet) 644 ishost = 0; 645 flags |= RTF_UP; 646 if (ishost) 647 flags |= RTF_HOST; 648 if (iflag == 0) 649 flags |= RTF_GATEWAY; 650 for (attempts = 1; ; attempts++) { 651 errno = 0; 652 if ((ret = rtmsg(*cmd, flags)) == 0) 653 break; 654 if (errno != ENETUNREACH && errno != ESRCH) 655 break; 656 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 657 hp->h_addr_list++; 658 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr, 659 hp->h_length); 660 } else 661 break; 662 } 663 if (*cmd == 'g') 664 exit(0); 665 oerrno = errno; 666 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 667 if (*gateway) { 668 (void) printf(": gateway %s", gateway); 669 if (attempts > 1 && ret == 0 && af == AF_INET) 670 (void) printf(" (%s)", 671 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 672 } 673 if (ret == 0) 674 (void) printf("\n"); 675 else { 676 switch (oerrno) { 677 case ESRCH: 678 err = "not in table"; 679 break; 680 case EBUSY: 681 err = "entry in use"; 682 break; 683 case ENOBUFS: 684 err = "routing table overflow"; 685 break; 686 default: 687 err = strerror(oerrno); 688 break; 689 } 690 (void) printf(": %s\n", err); 691 } 692 } 693 694 void 695 inet_makenetandmask(net, sin, bits) 696 u_long net, bits; 697 register struct sockaddr_in *sin; 698 { 699 u_long addr, mask = 0; 700 register char *cp; 701 702 rtm_addrs |= RTA_NETMASK; 703 if (net == 0) 704 mask = addr = 0; 705 else if (bits) { 706 addr = net; 707 mask = 0xffffffff << (32 - bits); 708 } else if (net < 128) { 709 addr = net << IN_CLASSA_NSHIFT; 710 mask = IN_CLASSA_NET; 711 } else if (net < 65536) { 712 addr = net << IN_CLASSB_NSHIFT; 713 mask = IN_CLASSB_NET; 714 } else if (net < 16777216L) { 715 addr = net << IN_CLASSC_NSHIFT; 716 mask = IN_CLASSC_NET; 717 } else { 718 addr = net; 719 if ((addr & IN_CLASSA_HOST) == 0) 720 mask = IN_CLASSA_NET; 721 else if ((addr & IN_CLASSB_HOST) == 0) 722 mask = IN_CLASSB_NET; 723 else if ((addr & IN_CLASSC_HOST) == 0) 724 mask = IN_CLASSC_NET; 725 else 726 mask = -1; 727 } 728 sin->sin_addr.s_addr = htonl(addr); 729 sin = &so_mask.sin; 730 sin->sin_addr.s_addr = htonl(mask); 731 sin->sin_len = 0; 732 sin->sin_family = 0; 733 cp = (char *)(&sin->sin_addr + 1); 734 while (*--cp == 0 && cp > (char *)sin) 735 ; 736 sin->sin_len = 1 + cp - (char *)sin; 737 } 738 739 /* 740 * Interpret an argument as a network address of some kind, 741 * returning 1 if a host address, 0 if a network address. 742 */ 743 int 744 getaddr(which, s, hpp) 745 int which; 746 char *s; 747 struct hostent **hpp; 748 { 749 register sup su; 750 #ifdef NS 751 struct ns_addr ns_addr(); 752 #endif 753 struct hostent *hp; 754 struct netent *np; 755 u_long val; 756 char *q,qs; 757 758 if (af == 0) { 759 af = AF_INET; 760 aflen = sizeof(struct sockaddr_in); 761 } 762 rtm_addrs |= which; 763 switch (which) { 764 case RTA_DST: 765 su = &so_dst; 766 su->sa.sa_family = af; 767 break; 768 case RTA_GATEWAY: 769 su = &so_gate; 770 if (iflag) { 771 #define MAX_IFACES 400 772 int sock; 773 struct ifreq iflist[MAX_IFACES]; 774 struct ifconf ifconf; 775 struct ifreq *ifr, *ifr_end; 776 struct sockaddr_dl *dl, *sdl = NULL; 777 778 /* Get socket */ 779 if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0) 780 err(1, "socket"); 781 782 /* Get interface list */ 783 ifconf.ifc_req = iflist; 784 ifconf.ifc_len = sizeof(iflist); 785 if (ioctl(sock, SIOCGIFCONF, &ifconf) < 0) 786 err(1, "ioctl(SIOCGIFCONF)"); 787 close(sock); 788 789 /* Look for this interface in the list */ 790 for (ifr = ifconf.ifc_req, 791 ifr_end = (struct ifreq *) 792 (ifconf.ifc_buf + ifconf.ifc_len); 793 ifr < ifr_end; 794 ifr = (struct ifreq *) ((char *) &ifr->ifr_addr 795 + ifr->ifr_addr.sa_len)) { 796 dl = (struct sockaddr_dl *)&ifr->ifr_addr; 797 if (ifr->ifr_addr.sa_family == AF_LINK 798 && (ifr->ifr_flags & IFF_POINTOPOINT) 799 && !strncmp(s, dl->sdl_data, dl->sdl_nlen) 800 && s[dl->sdl_nlen] == 0) { 801 sdl = dl; 802 break; 803 } 804 } 805 806 /* If we found it, then use it */ 807 if (sdl) { 808 su->sdl = *sdl; 809 return(1); 810 } 811 } 812 su->sa.sa_family = af; 813 break; 814 case RTA_NETMASK: 815 su = &so_mask; 816 break; 817 case RTA_GENMASK: 818 su = &so_genmask; 819 break; 820 case RTA_IFP: 821 su = &so_ifp; 822 su->sa.sa_family = af; 823 break; 824 case RTA_IFA: 825 su = &so_ifa; 826 su->sa.sa_family = af; 827 break; 828 default: 829 usage("Internal Error"); 830 /*NOTREACHED*/ 831 } 832 su->sa.sa_len = aflen; 833 if (strcmp(s, "default") == 0) { 834 switch (which) { 835 case RTA_DST: 836 forcenet++; 837 (void) getaddr(RTA_NETMASK, s, 0); 838 break; 839 case RTA_NETMASK: 840 case RTA_GENMASK: 841 su->sa.sa_len = 0; 842 } 843 return (0); 844 } 845 switch (af) { 846 #ifdef NS 847 case AF_NS: 848 if (which == RTA_DST) { 849 extern short ns_bh[3]; 850 struct sockaddr_ns *sms = &(so_mask.sns); 851 bzero((char *)sms, sizeof(*sms)); 852 sms->sns_family = 0; 853 sms->sns_len = 6; 854 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 855 rtm_addrs |= RTA_NETMASK; 856 } 857 su->sns.sns_addr = ns_addr(s); 858 return (!ns_nullhost(su->sns.sns_addr)); 859 #endif 860 861 862 case AF_APPLETALK: 863 if (!atalk_aton(s, &su->sat.sat_addr)) 864 errx(EX_NOHOST, "bad address: %s", s); 865 rtm_addrs |= RTA_NETMASK; 866 return(forcehost || su->sat.sat_addr.s_node != 0); 867 868 case AF_LINK: 869 link_addr(s, &su->sdl); 870 return (1); 871 872 873 case PF_ROUTE: 874 su->sa.sa_len = sizeof(*su); 875 sockaddr(s, &su->sa); 876 return (1); 877 878 case AF_INET: 879 default: 880 break; 881 } 882 883 if (hpp == NULL) 884 hpp = &hp; 885 *hpp = NULL; 886 887 q = strchr(s,'/'); 888 if (q && which == RTA_DST) { 889 qs = *q; 890 *q = '\0'; 891 if (((val = inet_addr(s)) != INADDR_NONE)) { 892 inet_makenetandmask( 893 htonl(val), &su->sin, strtoul(q+1, 0, 0)); 894 return (0); 895 } 896 *q =qs; 897 } 898 if (((val = inet_addr(s)) != INADDR_NONE) && 899 (which != RTA_DST || forcenet == 0)) { 900 su->sin.sin_addr.s_addr = val; 901 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 902 return (1); 903 else { 904 val = ntohl(val); 905 goto netdone; 906 } 907 } 908 if ((val = inet_network(s)) != INADDR_NONE || 909 (forcehost == 0 && (np = getnetbyname(s)) != NULL && 910 (val = np->n_net) != 0)) { 911 netdone: 912 if (which == RTA_DST) 913 inet_makenetandmask(val, &su->sin, 0); 914 return (0); 915 } 916 hp = gethostbyname(s); 917 if (hp) { 918 *hpp = hp; 919 su->sin.sin_family = hp->h_addrtype; 920 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, hp->h_length); 921 return (1); 922 } 923 errx(EX_NOHOST, "bad address: %s", s); 924 } 925 926 927 #ifdef NS 928 short ns_nullh[] = {0,0,0}; 929 short ns_bh[] = {-1,-1,-1}; 930 931 char * 932 ns_print(sns) 933 struct sockaddr_ns *sns; 934 { 935 struct ns_addr work; 936 union { union ns_net net_e; u_long long_e; } net; 937 u_short port; 938 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 939 char *host = ""; 940 register char *p; 941 register u_char *q; 942 943 work = sns->sns_addr; 944 port = ntohs(work.x_port); 945 work.x_port = 0; 946 net.net_e = work.x_net; 947 if (ns_nullhost(work) && net.long_e == 0) { 948 if (!port) 949 return ("*.*"); 950 (void) sprintf(mybuf, "*.%XH", port); 951 return (mybuf); 952 } 953 954 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0) 955 host = "any"; 956 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0) 957 host = "*"; 958 else { 959 q = work.x_host.c_host; 960 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 961 q[0], q[1], q[2], q[3], q[4], q[5]); 962 for (p = chost; *p == '0' && p < chost + 12; p++) 963 /* void */; 964 host = p; 965 } 966 if (port) 967 (void) sprintf(cport, ".%XH", htons(port)); 968 else 969 *cport = 0; 970 971 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 972 (unsigned long)ntohl(net.long_e), 973 host, cport); 974 return (mybuf); 975 } 976 #endif 977 978 void 979 interfaces() 980 { 981 size_t needed; 982 int mib[6]; 983 char *buf, *lim, *next; 984 register struct rt_msghdr *rtm; 985 986 mib[0] = CTL_NET; 987 mib[1] = PF_ROUTE; 988 mib[2] = 0; /* protocol */ 989 mib[3] = 0; /* wildcard address family */ 990 mib[4] = NET_RT_IFLIST; 991 mib[5] = 0; /* no flags */ 992 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 993 err(EX_OSERR, "route-sysctl-estimate"); 994 if ((buf = malloc(needed)) == NULL) 995 err(EX_OSERR, "malloc"); 996 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 997 err(EX_OSERR, "actual retrieval of interface table"); 998 lim = buf + needed; 999 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1000 rtm = (struct rt_msghdr *)next; 1001 print_rtmsg(rtm, rtm->rtm_msglen); 1002 } 1003 } 1004 1005 void 1006 monitor() 1007 { 1008 int n; 1009 char msg[2048]; 1010 1011 verbose = 1; 1012 if (debugonly) { 1013 interfaces(); 1014 exit(0); 1015 } 1016 for(;;) { 1017 n = read(s, msg, 2048); 1018 (void) printf("got message of size %d\n", n); 1019 print_rtmsg((struct rt_msghdr *)msg, n); 1020 } 1021 } 1022 1023 struct { 1024 struct rt_msghdr m_rtm; 1025 char m_space[512]; 1026 } m_rtmsg; 1027 1028 int 1029 rtmsg(cmd, flags) 1030 int cmd, flags; 1031 { 1032 static int seq; 1033 int rlen; 1034 register char *cp = m_rtmsg.m_space; 1035 register int l; 1036 1037 #define NEXTADDR(w, u) \ 1038 if (rtm_addrs & (w)) {\ 1039 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 1040 if (verbose) sodump(&(u),"u");\ 1041 } 1042 1043 errno = 0; 1044 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 1045 if (cmd == 'a') 1046 cmd = RTM_ADD; 1047 else if (cmd == 'c') 1048 cmd = RTM_CHANGE; 1049 else if (cmd == 'g') { 1050 cmd = RTM_GET; 1051 if (so_ifp.sa.sa_family == 0) { 1052 so_ifp.sa.sa_family = AF_LINK; 1053 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1054 rtm_addrs |= RTA_IFP; 1055 } 1056 } else 1057 cmd = RTM_DELETE; 1058 #define rtm m_rtmsg.m_rtm 1059 rtm.rtm_type = cmd; 1060 rtm.rtm_flags = flags; 1061 rtm.rtm_version = RTM_VERSION; 1062 rtm.rtm_seq = ++seq; 1063 rtm.rtm_addrs = rtm_addrs; 1064 rtm.rtm_rmx = rt_metrics; 1065 rtm.rtm_inits = rtm_inits; 1066 1067 if (rtm_addrs & RTA_NETMASK) 1068 mask_addr(); 1069 NEXTADDR(RTA_DST, so_dst); 1070 NEXTADDR(RTA_GATEWAY, so_gate); 1071 NEXTADDR(RTA_NETMASK, so_mask); 1072 NEXTADDR(RTA_GENMASK, so_genmask); 1073 NEXTADDR(RTA_IFP, so_ifp); 1074 NEXTADDR(RTA_IFA, so_ifa); 1075 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1076 if (verbose) 1077 print_rtmsg(&rtm, l); 1078 if (debugonly) 1079 return (0); 1080 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1081 perror("writing to routing socket"); 1082 return (-1); 1083 } 1084 if (cmd == RTM_GET) { 1085 do { 1086 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1087 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1088 if (l < 0) 1089 warn("read from routing socket"); 1090 else 1091 print_getmsg(&rtm, l); 1092 } 1093 #undef rtm 1094 return (0); 1095 } 1096 1097 void 1098 mask_addr() 1099 { 1100 int olen = so_mask.sa.sa_len; 1101 register char *cp1 = olen + (char *)&so_mask, *cp2; 1102 1103 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1104 if (*--cp1 != 0) { 1105 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1106 break; 1107 } 1108 if ((rtm_addrs & RTA_DST) == 0) 1109 return; 1110 switch (so_dst.sa.sa_family) { 1111 #ifdef NS 1112 case AF_NS: 1113 #endif 1114 case AF_INET: 1115 case AF_APPLETALK: 1116 case 0: 1117 return; 1118 } 1119 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1120 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1121 while (cp2 > cp1) 1122 *--cp2 = 0; 1123 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1124 while (cp1 > so_dst.sa.sa_data) 1125 *--cp1 &= *--cp2; 1126 } 1127 1128 char *msgtypes[] = { 1129 "", 1130 "RTM_ADD: Add Route", 1131 "RTM_DELETE: Delete Route", 1132 "RTM_CHANGE: Change Metrics or flags", 1133 "RTM_GET: Report Metrics", 1134 "RTM_LOSING: Kernel Suspects Partitioning", 1135 "RTM_REDIRECT: Told to use different route", 1136 "RTM_MISS: Lookup failed on this address", 1137 "RTM_LOCK: fix specified metrics", 1138 "RTM_OLDADD: caused by SIOCADDRT", 1139 "RTM_OLDDEL: caused by SIOCDELRT", 1140 "RTM_RESOLVE: Route created by cloning", 1141 "RTM_NEWADDR: address being added to iface", 1142 "RTM_DELADDR: address being removed from iface", 1143 "RTM_IFINFO: iface status change", 1144 "RTM_NEWMADDR: new multicast group membership on iface", 1145 "RTM_DELMADDR: multicast group membership removed from iface", 1146 0, 1147 }; 1148 1149 char metricnames[] = 1150 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1151 "\1mtu"; 1152 char routeflags[] = 1153 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1154 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1155 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1156 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1157 char ifnetflags[] = 1158 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1159 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1160 "\017LINK2\020MULTICAST"; 1161 char addrnames[] = 1162 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1163 1164 void 1165 print_rtmsg(rtm, msglen) 1166 register struct rt_msghdr *rtm; 1167 int msglen; 1168 { 1169 struct if_msghdr *ifm; 1170 struct ifa_msghdr *ifam; 1171 #ifdef RTM_NEWMADDR 1172 struct ifma_msghdr *ifmam; 1173 #endif 1174 1175 if (verbose == 0) 1176 return; 1177 if (rtm->rtm_version != RTM_VERSION) { 1178 (void) printf("routing message version %d not understood\n", 1179 rtm->rtm_version); 1180 return; 1181 } 1182 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1183 switch (rtm->rtm_type) { 1184 case RTM_IFINFO: 1185 ifm = (struct if_msghdr *)rtm; 1186 (void) printf("if# %d, flags:", ifm->ifm_index); 1187 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1188 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1189 break; 1190 case RTM_NEWADDR: 1191 case RTM_DELADDR: 1192 ifam = (struct ifa_msghdr *)rtm; 1193 (void) printf("metric %d, flags:", ifam->ifam_metric); 1194 bprintf(stdout, ifam->ifam_flags, routeflags); 1195 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1196 break; 1197 #ifdef RTM_NEWMADDR 1198 case RTM_NEWMADDR: 1199 case RTM_DELMADDR: 1200 ifmam = (struct ifma_msghdr *)rtm; 1201 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1202 break; 1203 #endif 1204 default: 1205 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1206 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1207 bprintf(stdout, rtm->rtm_flags, routeflags); 1208 pmsg_common(rtm); 1209 } 1210 } 1211 1212 void 1213 print_getmsg(rtm, msglen) 1214 register struct rt_msghdr *rtm; 1215 int msglen; 1216 { 1217 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1218 struct sockaddr_dl *ifp = NULL; 1219 register struct sockaddr *sa; 1220 register char *cp; 1221 register int i; 1222 1223 (void) printf(" route to: %s\n", routename(&so_dst)); 1224 if (rtm->rtm_version != RTM_VERSION) { 1225 warnx("routing message version %d not understood", 1226 rtm->rtm_version); 1227 return; 1228 } 1229 if (rtm->rtm_msglen > msglen) { 1230 warnx("message length mismatch, in packet %d, returned %d\n", 1231 rtm->rtm_msglen, msglen); 1232 } 1233 if (rtm->rtm_errno) { 1234 errno = rtm->rtm_errno; 1235 warn("message indicates error %d", errno); 1236 return; 1237 } 1238 cp = ((char *)(rtm + 1)); 1239 if (rtm->rtm_addrs) 1240 for (i = 1; i; i <<= 1) 1241 if (i & rtm->rtm_addrs) { 1242 sa = (struct sockaddr *)cp; 1243 switch (i) { 1244 case RTA_DST: 1245 dst = sa; 1246 break; 1247 case RTA_GATEWAY: 1248 gate = sa; 1249 break; 1250 case RTA_NETMASK: 1251 mask = sa; 1252 break; 1253 case RTA_IFP: 1254 if (sa->sa_family == AF_LINK && 1255 ((struct sockaddr_dl *)sa)->sdl_nlen) 1256 ifp = (struct sockaddr_dl *)sa; 1257 break; 1258 } 1259 ADVANCE(cp, sa); 1260 } 1261 if (dst && mask) 1262 mask->sa_family = dst->sa_family; /* XXX */ 1263 if (dst) 1264 (void)printf("destination: %s\n", routename(dst)); 1265 if (mask) { 1266 int savenflag = nflag; 1267 1268 nflag = 1; 1269 (void)printf(" mask: %s\n", routename(mask)); 1270 nflag = savenflag; 1271 } 1272 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1273 (void)printf(" gateway: %s\n", routename(gate)); 1274 if (ifp) 1275 (void)printf(" interface: %.*s\n", 1276 ifp->sdl_nlen, ifp->sdl_data); 1277 (void)printf(" flags: "); 1278 bprintf(stdout, rtm->rtm_flags, routeflags); 1279 1280 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1281 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1282 1283 (void) printf("\n%s\n", "\ 1284 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1285 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1286 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1287 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1288 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1289 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1290 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1291 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1292 if (rtm->rtm_rmx.rmx_expire) 1293 rtm->rtm_rmx.rmx_expire -= time(0); 1294 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1295 #undef lock 1296 #undef msec 1297 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1298 if (verbose) 1299 pmsg_common(rtm); 1300 else if (rtm->rtm_addrs &~ RTA_IGN) { 1301 (void) printf("sockaddrs: "); 1302 bprintf(stdout, rtm->rtm_addrs, addrnames); 1303 putchar('\n'); 1304 } 1305 #undef RTA_IGN 1306 } 1307 1308 void 1309 pmsg_common(rtm) 1310 register struct rt_msghdr *rtm; 1311 { 1312 (void) printf("\nlocks: "); 1313 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1314 (void) printf(" inits: "); 1315 bprintf(stdout, rtm->rtm_inits, metricnames); 1316 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1317 } 1318 1319 void 1320 pmsg_addrs(cp, addrs) 1321 char *cp; 1322 int addrs; 1323 { 1324 register struct sockaddr *sa; 1325 int i; 1326 1327 if (addrs == 0) 1328 return; 1329 (void) printf("\nsockaddrs: "); 1330 bprintf(stdout, addrs, addrnames); 1331 (void) putchar('\n'); 1332 for (i = 1; i; i <<= 1) 1333 if (i & addrs) { 1334 sa = (struct sockaddr *)cp; 1335 (void) printf(" %s", routename(sa)); 1336 ADVANCE(cp, sa); 1337 } 1338 (void) putchar('\n'); 1339 (void) fflush(stdout); 1340 } 1341 1342 void 1343 bprintf(fp, b, s) 1344 register FILE *fp; 1345 register int b; 1346 register u_char *s; 1347 { 1348 register int i; 1349 int gotsome = 0; 1350 1351 if (b == 0) 1352 return; 1353 while ((i = *s++) != 0) { 1354 if (b & (1 << (i-1))) { 1355 if (gotsome == 0) 1356 i = '<'; 1357 else 1358 i = ','; 1359 (void) putc(i, fp); 1360 gotsome = 1; 1361 for (; (i = *s) > 32; s++) 1362 (void) putc(i, fp); 1363 } else 1364 while (*s > 32) 1365 s++; 1366 } 1367 if (gotsome) 1368 (void) putc('>', fp); 1369 } 1370 1371 int 1372 keyword(cp) 1373 char *cp; 1374 { 1375 register struct keytab *kt = keywords; 1376 1377 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1378 kt++; 1379 return kt->kt_i; 1380 } 1381 1382 void 1383 sodump(su, which) 1384 register sup su; 1385 char *which; 1386 { 1387 switch (su->sa.sa_family) { 1388 case AF_LINK: 1389 (void) printf("%s: link %s; ", 1390 which, link_ntoa(&su->sdl)); 1391 break; 1392 case AF_INET: 1393 (void) printf("%s: inet %s; ", 1394 which, inet_ntoa(su->sin.sin_addr)); 1395 break; 1396 case AF_APPLETALK: 1397 (void) printf("%s: atalk %s; ", 1398 which, atalk_ntoa(su->sat.sat_addr)); 1399 break; 1400 #ifdef NS 1401 case AF_NS: 1402 (void) printf("%s: xns %s; ", 1403 which, ns_ntoa(su->sns.sns_addr)); 1404 break; 1405 #endif 1406 } 1407 (void) fflush(stdout); 1408 } 1409 1410 /* States*/ 1411 #define VIRGIN 0 1412 #define GOTONE 1 1413 #define GOTTWO 2 1414 /* Inputs */ 1415 #define DIGIT (4*0) 1416 #define END (4*1) 1417 #define DELIM (4*2) 1418 1419 void 1420 sockaddr(addr, sa) 1421 register char *addr; 1422 register struct sockaddr *sa; 1423 { 1424 register char *cp = (char *)sa; 1425 int size = sa->sa_len; 1426 char *cplim = cp + size; 1427 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1428 1429 bzero(cp, size); 1430 cp++; 1431 do { 1432 if ((*addr >= '0') && (*addr <= '9')) { 1433 new = *addr - '0'; 1434 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1435 new = *addr - 'a' + 10; 1436 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1437 new = *addr - 'A' + 10; 1438 } else if (*addr == 0) 1439 state |= END; 1440 else 1441 state |= DELIM; 1442 addr++; 1443 switch (state /* | INPUT */) { 1444 case GOTTWO | DIGIT: 1445 *cp++ = byte; /*FALLTHROUGH*/ 1446 case VIRGIN | DIGIT: 1447 state = GOTONE; byte = new; continue; 1448 case GOTONE | DIGIT: 1449 state = GOTTWO; byte = new + (byte << 4); continue; 1450 default: /* | DELIM */ 1451 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1452 case GOTONE | END: 1453 case GOTTWO | END: 1454 *cp++ = byte; /* FALLTHROUGH */ 1455 case VIRGIN | END: 1456 break; 1457 } 1458 break; 1459 } while (cp < cplim); 1460 sa->sa_len = cp - (char *)sa; 1461 } 1462 1463 int 1464 atalk_aton(const char *text, struct at_addr *addr) 1465 { 1466 u_int net, node; 1467 1468 if (sscanf(text, "%u.%u", &net, &node) != 2 1469 || net > 0xffff || node > 0xff) 1470 return(0); 1471 addr->s_net = htons(net); 1472 addr->s_node = node; 1473 return(1); 1474 } 1475 1476 char * 1477 atalk_ntoa(struct at_addr at) 1478 { 1479 static char buf[20]; 1480 1481 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1482 return(buf); 1483 } 1484