1 /* 2 * Copyright (c) 1983, 1989, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1983, 1989, 1991, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)route.c 8.3 (Berkeley) 3/19/94"; 43 #endif 44 static const char rcsid[] = 45 "$Id$"; 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 54 #include <net/if.h> 55 #include <net/route.h> 56 #include <net/if_dl.h> 57 #include <netinet/in.h> 58 #include <netatalk/at.h> 59 #ifdef NS 60 #include <netns/ns.h> 61 #endif 62 #include <arpa/inet.h> 63 #include <netdb.h> 64 65 #include <ctype.h> 66 #include <err.h> 67 #include <errno.h> 68 #include <stdio.h> 69 #include <stdlib.h> 70 #include <string.h> 71 #include <sysexits.h> 72 #include <unistd.h> 73 74 struct keytab { 75 char *kt_cp; 76 int kt_i; 77 } keywords[] = { 78 #include "keywords.h" 79 {0, 0} 80 }; 81 82 struct ortentry route; 83 union sockunion { 84 struct sockaddr sa; 85 struct sockaddr_in sin; 86 struct sockaddr_at sat; 87 #ifdef NS 88 struct sockaddr_ns sns; 89 #endif 90 struct sockaddr_dl sdl; 91 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 92 93 typedef union sockunion *sup; 94 int pid, rtm_addrs, uid; 95 int s; 96 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 97 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 98 int locking, lockrest, debugonly; 99 struct rt_metrics rt_metrics; 100 u_long rtm_inits; 101 struct in_addr inet_makeaddr(); 102 int atalk_aton __P((const char *, struct at_addr *)); 103 char *atalk_ntoa __P((struct at_addr)); 104 char *routename(), *netname(); 105 void flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 106 void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 107 int getaddr(), rtmsg(), x25_makemask(); 108 extern char *inet_ntoa(), *iso_ntoa(), *link_ntoa(); 109 110 void usage __P((const char *)) __dead2; 111 112 void 113 usage(cp) 114 const char *cp; 115 { 116 if (cp) 117 warnx("bad keyword: %s", cp); 118 (void) fprintf(stderr, 119 "usage: route [-dnqtv] command [[modifiers] args]\n"); 120 exit(EX_USAGE); 121 /* NOTREACHED */ 122 } 123 124 #define ROUNDUP(a) \ 125 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 126 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 127 128 int 129 main(argc, argv) 130 int argc; 131 char **argv; 132 { 133 int ch; 134 135 if (argc < 2) 136 usage((char *)NULL); 137 138 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 139 switch(ch) { 140 case 'n': 141 nflag = 1; 142 break; 143 case 'q': 144 qflag = 1; 145 break; 146 case 'v': 147 verbose = 1; 148 break; 149 case 't': 150 tflag = 1; 151 break; 152 case 'd': 153 debugonly = 1; 154 break; 155 case '?': 156 default: 157 usage((char *)NULL); 158 } 159 argc -= optind; 160 argv += optind; 161 162 pid = getpid(); 163 uid = getuid(); 164 if (tflag) 165 s = open("/dev/null", O_WRONLY, 0); 166 else 167 s = socket(PF_ROUTE, SOCK_RAW, 0); 168 if (s < 0) 169 err(EX_OSERR, "socket"); 170 setuid(uid); 171 if (*argv) 172 switch (keyword(*argv)) { 173 case K_GET: 174 uid = 0; 175 /* FALLTHROUGH */ 176 177 case K_CHANGE: 178 case K_ADD: 179 case K_DELETE: 180 newroute(argc, argv); 181 exit(0); 182 /* NOTREACHED */ 183 184 case K_MONITOR: 185 monitor(); 186 /* NOTREACHED */ 187 188 case K_FLUSH: 189 flushroutes(argc, argv); 190 exit(0); 191 /* NOTREACHED */ 192 } 193 usage(*argv); 194 /* NOTREACHED */ 195 } 196 197 /* 198 * Purge all entries in the routing tables not 199 * associated with network interfaces. 200 */ 201 void 202 flushroutes(argc, argv) 203 int argc; 204 char *argv[]; 205 { 206 size_t needed; 207 int mib[6], rlen, seqno; 208 char *buf, *next, *lim; 209 register struct rt_msghdr *rtm; 210 211 if (uid) { 212 errx(EX_NOPERM, "must be root to alter routing table"); 213 } 214 shutdown(s, 0); /* Don't want to read back our messages */ 215 if (argc > 1) { 216 argv++; 217 if (argc == 2 && **argv == '-') 218 switch (keyword(*argv + 1)) { 219 case K_INET: 220 af = AF_INET; 221 break; 222 case K_ATALK: 223 af = AF_APPLETALK; 224 break; 225 #ifdef NS 226 case K_XNS: 227 af = AF_NS; 228 break; 229 #endif 230 case K_LINK: 231 af = AF_LINK; 232 break; 233 default: 234 goto bad; 235 } else 236 bad: usage(*argv); 237 } 238 mib[0] = CTL_NET; 239 mib[1] = PF_ROUTE; 240 mib[2] = 0; /* protocol */ 241 mib[3] = 0; /* wildcard address family */ 242 mib[4] = NET_RT_DUMP; 243 mib[5] = 0; /* no flags */ 244 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 245 err(EX_OSERR, "route-sysctl-estimate"); 246 if ((buf = malloc(needed)) == NULL) 247 errx(EX_OSERR, "malloc failed"); 248 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 249 err(EX_OSERR, "route-sysctl-get"); 250 lim = buf + needed; 251 if (verbose) 252 (void) printf("Examining routing table from sysctl\n"); 253 seqno = 0; /* ??? */ 254 for (next = buf; next < lim; next += rtm->rtm_msglen) { 255 rtm = (struct rt_msghdr *)next; 256 if (verbose) 257 print_rtmsg(rtm, rtm->rtm_msglen); 258 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 259 continue; 260 if (af) { 261 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 262 263 if (sa->sa_family != af) 264 continue; 265 } 266 if (debugonly) 267 continue; 268 rtm->rtm_type = RTM_DELETE; 269 rtm->rtm_seq = seqno; 270 rlen = write(s, next, rtm->rtm_msglen); 271 if (rlen < (int)rtm->rtm_msglen) { 272 warn("write to routing socket"); 273 (void) printf("got only %d for rlen\n", rlen); 274 break; 275 } 276 seqno++; 277 if (qflag) 278 continue; 279 if (verbose) 280 print_rtmsg(rtm, rlen); 281 else { 282 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 283 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 284 routename(sa) : netname(sa)); 285 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 286 (void) printf("%-20.20s ", routename(sa)); 287 (void) printf("done\n"); 288 } 289 } 290 } 291 292 char * 293 routename(sa) 294 struct sockaddr *sa; 295 { 296 register char *cp; 297 static char line[MAXHOSTNAMELEN + 1]; 298 struct hostent *hp; 299 static char domain[MAXHOSTNAMELEN + 1]; 300 static int first = 1; 301 #ifdef NS 302 char *ns_print(); 303 #endif 304 305 if (first) { 306 first = 0; 307 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 308 (cp = index(domain, '.'))) { 309 domain[MAXHOSTNAMELEN] = '\0'; 310 (void) strcpy(domain, cp + 1); 311 } else 312 domain[0] = 0; 313 } 314 315 if (sa->sa_len == 0) 316 strcpy(line, "default"); 317 else switch (sa->sa_family) { 318 319 case AF_INET: 320 { struct in_addr in; 321 in = ((struct sockaddr_in *)sa)->sin_addr; 322 323 cp = 0; 324 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 325 cp = "default"; 326 if (cp == 0 && !nflag) { 327 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 328 AF_INET); 329 if (hp) { 330 if ((cp = index(hp->h_name, '.')) && 331 !strcmp(cp + 1, domain)) 332 *cp = 0; 333 cp = hp->h_name; 334 } 335 } 336 if (cp) { 337 strncpy(line, cp, sizeof(line) - 1); 338 line[sizeof(line) - 1] = '\0'; 339 } else { 340 /* XXX - why not inet_ntoa()? */ 341 #define C(x) (unsigned)((x) & 0xff) 342 in.s_addr = ntohl(in.s_addr); 343 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 344 C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr)); 345 } 346 break; 347 } 348 349 case AF_APPLETALK: 350 (void) snprintf(line, sizeof(line), "atalk %s", 351 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 352 break; 353 354 #ifdef NS 355 case AF_NS: 356 return (ns_print((struct sockaddr_ns *)sa)); 357 #endif 358 359 case AF_LINK: 360 return (link_ntoa((struct sockaddr_dl *)sa)); 361 362 default: 363 { u_short *s = (u_short *)sa; 364 u_short *slim = s + ((sa->sa_len + 1) >> 1); 365 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 366 char *cpe = line + sizeof(line); 367 368 while (++s < slim && cp < cpe) /* start with sa->sa_data */ 369 cp += snprintf(cp, cpe - cp, " %x", *s); 370 break; 371 } 372 } 373 return (line); 374 } 375 376 /* 377 * Return the name of the network whose address is given. 378 * The address is assumed to be that of a net or subnet, not a host. 379 */ 380 char * 381 netname(sa) 382 struct sockaddr *sa; 383 { 384 char *cp = 0; 385 static char line[MAXHOSTNAMELEN + 1]; 386 struct netent *np = 0; 387 u_long net, mask; 388 register u_long i; 389 int subnetshift; 390 #ifdef NS 391 char *ns_print(); 392 #endif 393 394 switch (sa->sa_family) { 395 396 case AF_INET: 397 { struct in_addr in; 398 in = ((struct sockaddr_in *)sa)->sin_addr; 399 400 i = in.s_addr = ntohl(in.s_addr); 401 if (in.s_addr == 0) 402 cp = "default"; 403 else if (!nflag) { 404 if (IN_CLASSA(i)) { 405 mask = IN_CLASSA_NET; 406 subnetshift = 8; 407 } else if (IN_CLASSB(i)) { 408 mask = IN_CLASSB_NET; 409 subnetshift = 8; 410 } else { 411 mask = IN_CLASSC_NET; 412 subnetshift = 4; 413 } 414 /* 415 * If there are more bits than the standard mask 416 * would suggest, subnets must be in use. 417 * Guess at the subnet mask, assuming reasonable 418 * width subnet fields. 419 */ 420 while (in.s_addr &~ mask) 421 mask = (long)mask >> subnetshift; 422 net = in.s_addr & mask; 423 while ((mask & 1) == 0) 424 mask >>= 1, net >>= 1; 425 np = getnetbyaddr(net, AF_INET); 426 if (np) 427 cp = np->n_name; 428 } 429 if (cp) 430 strncpy(line, cp, sizeof(line)); 431 else if ((in.s_addr & 0xffffff) == 0) 432 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 433 else if ((in.s_addr & 0xffff) == 0) 434 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 435 C(in.s_addr >> 16)); 436 else if ((in.s_addr & 0xff) == 0) 437 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 438 C(in.s_addr >> 16), C(in.s_addr >> 8)); 439 else 440 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 441 C(in.s_addr >> 16), C(in.s_addr >> 8), 442 C(in.s_addr)); 443 break; 444 } 445 446 case AF_APPLETALK: 447 (void) snprintf(line, sizeof(line), "atalk %s", 448 atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 449 break; 450 451 #ifdef NS 452 case AF_NS: 453 return (ns_print((struct sockaddr_ns *)sa)); 454 break; 455 #endif 456 457 case AF_LINK: 458 return (link_ntoa((struct sockaddr_dl *)sa)); 459 460 461 default: 462 { u_short *s = (u_short *)sa->sa_data; 463 u_short *slim = s + ((sa->sa_len + 1)>>1); 464 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 465 char *cpe = line + sizeof(line); 466 467 while (s < slim && cp < cpe) 468 cp += snprintf(cp, cpe - cp, " %x", *s++); 469 break; 470 } 471 } 472 return (line); 473 } 474 475 void 476 set_metric(value, key) 477 char *value; 478 int key; 479 { 480 int flag = 0; 481 u_long noval, *valp = &noval; 482 483 switch (key) { 484 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 485 caseof(K_MTU, RTV_MTU, rmx_mtu); 486 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 487 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 488 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 489 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 490 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 491 caseof(K_RTT, RTV_RTT, rmx_rtt); 492 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 493 } 494 rtm_inits |= flag; 495 if (lockrest || locking) 496 rt_metrics.rmx_locks |= flag; 497 if (locking) 498 locking = 0; 499 *valp = atoi(value); 500 } 501 502 void 503 newroute(argc, argv) 504 int argc; 505 register char **argv; 506 { 507 char *cmd, *dest = "", *gateway = "", *err; 508 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 509 int key; 510 struct hostent *hp = 0; 511 512 if (uid) { 513 errx(EX_NOPERM, "must be root to alter routing table"); 514 } 515 cmd = argv[0]; 516 if (*cmd != 'g') 517 shutdown(s, 0); /* Don't want to read back our messages */ 518 while (--argc > 0) { 519 if (**(++argv)== '-') { 520 switch (key = keyword(1 + *argv)) { 521 case K_LINK: 522 af = AF_LINK; 523 aflen = sizeof(struct sockaddr_dl); 524 break; 525 case K_INET: 526 af = AF_INET; 527 aflen = sizeof(struct sockaddr_in); 528 break; 529 case K_ATALK: 530 af = AF_APPLETALK; 531 aflen = sizeof(struct sockaddr_at); 532 break; 533 case K_SA: 534 af = PF_ROUTE; 535 aflen = sizeof(union sockunion); 536 break; 537 #ifdef NS 538 case K_XNS: 539 af = AF_NS; 540 aflen = sizeof(struct sockaddr_ns); 541 break; 542 #endif 543 case K_IFACE: 544 case K_INTERFACE: 545 iflag++; 546 break; 547 case K_NOSTATIC: 548 flags &= ~RTF_STATIC; 549 break; 550 case K_LLINFO: 551 flags |= RTF_LLINFO; 552 break; 553 case K_LOCK: 554 locking = 1; 555 break; 556 case K_LOCKREST: 557 lockrest = 1; 558 break; 559 case K_HOST: 560 forcehost++; 561 break; 562 case K_REJECT: 563 flags |= RTF_REJECT; 564 break; 565 case K_BLACKHOLE: 566 flags |= RTF_BLACKHOLE; 567 break; 568 case K_PROTO1: 569 flags |= RTF_PROTO1; 570 break; 571 case K_PROTO2: 572 flags |= RTF_PROTO2; 573 break; 574 case K_CLONING: 575 flags |= RTF_CLONING; 576 break; 577 case K_XRESOLVE: 578 flags |= RTF_XRESOLVE; 579 break; 580 case K_STATIC: 581 flags |= RTF_STATIC; 582 break; 583 case K_IFA: 584 argc--; 585 (void) getaddr(RTA_IFA, *++argv, 0); 586 break; 587 case K_IFP: 588 argc--; 589 (void) getaddr(RTA_IFP, *++argv, 0); 590 break; 591 case K_GENMASK: 592 argc--; 593 (void) getaddr(RTA_GENMASK, *++argv, 0); 594 break; 595 case K_GATEWAY: 596 argc--; 597 (void) getaddr(RTA_GATEWAY, *++argv, 0); 598 break; 599 case K_DST: 600 argc--; 601 ishost = getaddr(RTA_DST, *++argv, &hp); 602 dest = *argv; 603 break; 604 case K_NETMASK: 605 argc--; 606 (void) getaddr(RTA_NETMASK, *++argv, 0); 607 /* FALLTHROUGH */ 608 case K_NET: 609 forcenet++; 610 break; 611 case K_MTU: 612 case K_HOPCOUNT: 613 case K_EXPIRE: 614 case K_RECVPIPE: 615 case K_SENDPIPE: 616 case K_SSTHRESH: 617 case K_RTT: 618 case K_RTTVAR: 619 argc--; 620 set_metric(*++argv, key); 621 break; 622 default: 623 usage(1+*argv); 624 } 625 } else { 626 if ((rtm_addrs & RTA_DST) == 0) { 627 dest = *argv; 628 ishost = getaddr(RTA_DST, *argv, &hp); 629 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 630 gateway = *argv; 631 (void) getaddr(RTA_GATEWAY, *argv, &hp); 632 } else { 633 (void) getaddr(RTA_NETMASK, *argv, 0); 634 } 635 } 636 } 637 if (forcehost) 638 ishost = 1; 639 if (forcenet) 640 ishost = 0; 641 flags |= RTF_UP; 642 if (ishost) 643 flags |= RTF_HOST; 644 if (iflag == 0) 645 flags |= RTF_GATEWAY; 646 for (attempts = 1; ; attempts++) { 647 errno = 0; 648 if ((ret = rtmsg(*cmd, flags)) == 0) 649 break; 650 if (errno != ENETUNREACH && errno != ESRCH) 651 break; 652 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 653 hp->h_addr_list++; 654 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr, 655 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 656 } else 657 break; 658 } 659 if (*cmd == 'g') 660 exit(0); 661 oerrno = errno; 662 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 663 if (*gateway) { 664 (void) printf(": gateway %s", gateway); 665 if (attempts > 1 && ret == 0 && af == AF_INET) 666 (void) printf(" (%s)", 667 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 668 } 669 if (ret == 0) 670 (void) printf("\n"); 671 else { 672 switch (oerrno) { 673 case ESRCH: 674 err = "not in table"; 675 break; 676 case EBUSY: 677 err = "entry in use"; 678 break; 679 case ENOBUFS: 680 err = "routing table overflow"; 681 break; 682 default: 683 err = strerror(oerrno); 684 break; 685 } 686 (void) printf(": %s\n", err); 687 } 688 } 689 690 void 691 inet_makenetandmask(net, sin, bits) 692 u_long net, bits; 693 register struct sockaddr_in *sin; 694 { 695 u_long addr, mask = 0; 696 register char *cp; 697 698 rtm_addrs |= RTA_NETMASK; 699 if (net == 0) 700 mask = addr = 0; 701 else if (bits) { 702 addr = net; 703 mask = 0xffffffff << (32 - bits); 704 } else if (net < 128) { 705 addr = net << IN_CLASSA_NSHIFT; 706 mask = IN_CLASSA_NET; 707 } else if (net < 65536) { 708 addr = net << IN_CLASSB_NSHIFT; 709 mask = IN_CLASSB_NET; 710 } else if (net < 16777216L) { 711 addr = net << IN_CLASSC_NSHIFT; 712 mask = IN_CLASSC_NET; 713 } else { 714 addr = net; 715 if ((addr & IN_CLASSA_HOST) == 0) 716 mask = IN_CLASSA_NET; 717 else if ((addr & IN_CLASSB_HOST) == 0) 718 mask = IN_CLASSB_NET; 719 else if ((addr & IN_CLASSC_HOST) == 0) 720 mask = IN_CLASSC_NET; 721 else 722 mask = -1; 723 } 724 sin->sin_addr.s_addr = htonl(addr); 725 sin = &so_mask.sin; 726 sin->sin_addr.s_addr = htonl(mask); 727 sin->sin_len = 0; 728 sin->sin_family = 0; 729 cp = (char *)(&sin->sin_addr + 1); 730 while (*--cp == 0 && cp > (char *)sin) 731 ; 732 sin->sin_len = 1 + cp - (char *)sin; 733 } 734 735 /* 736 * Interpret an argument as a network address of some kind, 737 * returning 1 if a host address, 0 if a network address. 738 */ 739 int 740 getaddr(which, s, hpp) 741 int which; 742 char *s; 743 struct hostent **hpp; 744 { 745 register sup su; 746 #ifdef NS 747 struct ns_addr ns_addr(); 748 #endif 749 struct hostent *hp; 750 struct netent *np; 751 u_long val; 752 char *q,qs; 753 754 if (af == 0) { 755 af = AF_INET; 756 aflen = sizeof(struct sockaddr_in); 757 } 758 rtm_addrs |= which; 759 switch (which) { 760 case RTA_DST: 761 su = &so_dst; 762 break; 763 case RTA_GATEWAY: 764 su = &so_gate; 765 if (iflag) { 766 #define MAX_IFACES 400 767 int sock; 768 struct ifreq iflist[MAX_IFACES]; 769 struct ifconf ifconf; 770 struct ifreq *ifr, *ifr_end; 771 struct sockaddr_dl *dl, *sdl = NULL; 772 773 /* Get socket */ 774 if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0) 775 err(1, "socket"); 776 777 /* Get interface list */ 778 ifconf.ifc_req = iflist; 779 ifconf.ifc_len = sizeof(iflist); 780 if (ioctl(sock, SIOCGIFCONF, &ifconf) < 0) 781 err(1, "ioctl(SIOCGIFCONF)"); 782 close(sock); 783 784 /* Look for this interface in the list */ 785 for (ifr = ifconf.ifc_req, 786 ifr_end = (struct ifreq *) 787 (ifconf.ifc_buf + ifconf.ifc_len); 788 ifr < ifr_end; 789 ifr = (struct ifreq *) ((char *) &ifr->ifr_addr 790 + ifr->ifr_addr.sa_len)) { 791 dl = (struct sockaddr_dl *)&ifr->ifr_addr; 792 if (ifr->ifr_addr.sa_family == AF_LINK 793 && (ifr->ifr_flags & IFF_POINTOPOINT) 794 && !strncmp(s, dl->sdl_data, dl->sdl_nlen) 795 && s[dl->sdl_nlen] == 0) { 796 sdl = dl; 797 break; 798 } 799 } 800 801 /* If we found it, then use it */ 802 if (sdl) { 803 su->sdl = *sdl; 804 return(1); 805 } 806 } 807 break; 808 case RTA_NETMASK: 809 su = &so_mask; 810 break; 811 case RTA_GENMASK: 812 su = &so_genmask; 813 break; 814 case RTA_IFP: 815 su = &so_ifp; 816 break; 817 case RTA_IFA: 818 su = &so_ifa; 819 break; 820 default: 821 usage("internal error"); 822 /*NOTREACHED*/ 823 } 824 su->sa.sa_len = aflen; 825 su->sa.sa_family = af; /* cases that don't want it have left already */ 826 if (strcmp(s, "default") == 0) { 827 /* 828 * Default is net 0.0.0.0/0 829 */ 830 switch (which) { 831 case RTA_DST: 832 forcenet++; 833 /* bzero(su, sizeof(*su)); *//* for readability */ 834 (void) getaddr(RTA_NETMASK, s, 0); 835 break; 836 case RTA_NETMASK: 837 case RTA_GENMASK: 838 /* bzero(su, sizeof(*su)); *//* for readability */ 839 } 840 return (0); 841 } 842 switch (af) { 843 #ifdef NS 844 case AF_NS: 845 if (which == RTA_DST) { 846 extern short ns_bh[3]; 847 struct sockaddr_ns *sms = &(so_mask.sns); 848 bzero((char *)sms, sizeof(*sms)); 849 sms->sns_family = 0; 850 sms->sns_len = 6; 851 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 852 rtm_addrs |= RTA_NETMASK; 853 } 854 su->sns.sns_addr = ns_addr(s); 855 return (!ns_nullhost(su->sns.sns_addr)); 856 #endif 857 858 859 case AF_APPLETALK: 860 if (!atalk_aton(s, &su->sat.sat_addr)) 861 errx(EX_NOHOST, "bad address: %s", s); 862 rtm_addrs |= RTA_NETMASK; 863 return(forcehost || su->sat.sat_addr.s_node != 0); 864 865 case AF_LINK: 866 link_addr(s, &su->sdl); 867 return (1); 868 869 870 case PF_ROUTE: 871 su->sa.sa_len = sizeof(*su); 872 sockaddr(s, &su->sa); 873 return (1); 874 875 case AF_INET: 876 default: 877 break; 878 } 879 880 if (hpp == NULL) 881 hpp = &hp; 882 *hpp = NULL; 883 884 q = strchr(s,'/'); 885 if (q && which == RTA_DST) { 886 qs = *q; 887 *q = '\0'; 888 if (((val = inet_addr(s)) != INADDR_NONE)) { 889 inet_makenetandmask( 890 htonl(val), &su->sin, strtoul(q+1, 0, 0)); 891 return (0); 892 } 893 *q =qs; 894 } 895 if (((val = inet_addr(s)) != INADDR_NONE) && 896 (which != RTA_DST || forcenet == 0)) { 897 su->sin.sin_addr.s_addr = val; 898 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 899 return (1); 900 else { 901 val = ntohl(val); 902 goto netdone; 903 } 904 } 905 if ((val = inet_network(s)) != INADDR_NONE || 906 (forcehost == 0 && (np = getnetbyname(s)) != NULL && 907 (val = np->n_net) != 0)) { 908 netdone: 909 if (which == RTA_DST) 910 inet_makenetandmask(val, &su->sin, 0); 911 return (0); 912 } 913 hp = gethostbyname(s); 914 if (hp) { 915 *hpp = hp; 916 su->sin.sin_family = hp->h_addrtype; 917 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, 918 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 919 return (1); 920 } 921 errx(EX_NOHOST, "bad address: %s", s); 922 } 923 924 925 #ifdef NS 926 short ns_nullh[] = {0,0,0}; 927 short ns_bh[] = {-1,-1,-1}; 928 929 char * 930 ns_print(sns) 931 struct sockaddr_ns *sns; 932 { 933 struct ns_addr work; 934 union { union ns_net net_e; u_long long_e; } net; 935 u_short port; 936 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 937 char *host = ""; 938 register char *p; 939 register u_char *q; 940 941 work = sns->sns_addr; 942 port = ntohs(work.x_port); 943 work.x_port = 0; 944 net.net_e = work.x_net; 945 if (ns_nullhost(work) && net.long_e == 0) { 946 if (!port) 947 return ("*.*"); 948 (void) sprintf(mybuf, "*.%XH", port); 949 return (mybuf); 950 } 951 952 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0) 953 host = "any"; 954 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0) 955 host = "*"; 956 else { 957 q = work.x_host.c_host; 958 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 959 q[0], q[1], q[2], q[3], q[4], q[5]); 960 for (p = chost; *p == '0' && p < chost + 12; p++) 961 /* void */; 962 host = p; 963 } 964 if (port) 965 (void) sprintf(cport, ".%XH", htons(port)); 966 else 967 *cport = 0; 968 969 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 970 (unsigned long)ntohl(net.long_e), 971 host, cport); 972 return (mybuf); 973 } 974 #endif 975 976 void 977 interfaces() 978 { 979 size_t needed; 980 int mib[6]; 981 char *buf, *lim, *next; 982 register struct rt_msghdr *rtm; 983 984 mib[0] = CTL_NET; 985 mib[1] = PF_ROUTE; 986 mib[2] = 0; /* protocol */ 987 mib[3] = 0; /* wildcard address family */ 988 mib[4] = NET_RT_IFLIST; 989 mib[5] = 0; /* no flags */ 990 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 991 err(EX_OSERR, "route-sysctl-estimate"); 992 if ((buf = malloc(needed)) == NULL) 993 errx(EX_OSERR, "malloc failed"); 994 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 995 err(EX_OSERR, "actual retrieval of interface table"); 996 lim = buf + needed; 997 for (next = buf; next < lim; next += rtm->rtm_msglen) { 998 rtm = (struct rt_msghdr *)next; 999 print_rtmsg(rtm, rtm->rtm_msglen); 1000 } 1001 } 1002 1003 void 1004 monitor() 1005 { 1006 int n; 1007 char msg[2048]; 1008 1009 verbose = 1; 1010 if (debugonly) { 1011 interfaces(); 1012 exit(0); 1013 } 1014 for(;;) { 1015 n = read(s, msg, 2048); 1016 (void) printf("got message of size %d\n", n); 1017 print_rtmsg((struct rt_msghdr *)msg, n); 1018 } 1019 } 1020 1021 struct { 1022 struct rt_msghdr m_rtm; 1023 char m_space[512]; 1024 } m_rtmsg; 1025 1026 int 1027 rtmsg(cmd, flags) 1028 int cmd, flags; 1029 { 1030 static int seq; 1031 int rlen; 1032 register char *cp = m_rtmsg.m_space; 1033 register int l; 1034 1035 #define NEXTADDR(w, u) \ 1036 if (rtm_addrs & (w)) {\ 1037 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 1038 if (verbose) sodump(&(u),"u");\ 1039 } 1040 1041 errno = 0; 1042 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 1043 if (cmd == 'a') 1044 cmd = RTM_ADD; 1045 else if (cmd == 'c') 1046 cmd = RTM_CHANGE; 1047 else if (cmd == 'g') { 1048 cmd = RTM_GET; 1049 if (so_ifp.sa.sa_family == 0) { 1050 so_ifp.sa.sa_family = AF_LINK; 1051 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1052 rtm_addrs |= RTA_IFP; 1053 } 1054 } else 1055 cmd = RTM_DELETE; 1056 #define rtm m_rtmsg.m_rtm 1057 rtm.rtm_type = cmd; 1058 rtm.rtm_flags = flags; 1059 rtm.rtm_version = RTM_VERSION; 1060 rtm.rtm_seq = ++seq; 1061 rtm.rtm_addrs = rtm_addrs; 1062 rtm.rtm_rmx = rt_metrics; 1063 rtm.rtm_inits = rtm_inits; 1064 1065 if (rtm_addrs & RTA_NETMASK) 1066 mask_addr(); 1067 NEXTADDR(RTA_DST, so_dst); 1068 NEXTADDR(RTA_GATEWAY, so_gate); 1069 NEXTADDR(RTA_NETMASK, so_mask); 1070 NEXTADDR(RTA_GENMASK, so_genmask); 1071 NEXTADDR(RTA_IFP, so_ifp); 1072 NEXTADDR(RTA_IFA, so_ifa); 1073 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1074 if (verbose) 1075 print_rtmsg(&rtm, l); 1076 if (debugonly) 1077 return (0); 1078 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1079 warn("writing to routing socket"); 1080 return (-1); 1081 } 1082 if (cmd == RTM_GET) { 1083 do { 1084 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1085 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1086 if (l < 0) 1087 warn("read from routing socket"); 1088 else 1089 print_getmsg(&rtm, l); 1090 } 1091 #undef rtm 1092 return (0); 1093 } 1094 1095 void 1096 mask_addr() 1097 { 1098 int olen = so_mask.sa.sa_len; 1099 register char *cp1 = olen + (char *)&so_mask, *cp2; 1100 1101 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1102 if (*--cp1 != 0) { 1103 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1104 break; 1105 } 1106 if ((rtm_addrs & RTA_DST) == 0) 1107 return; 1108 switch (so_dst.sa.sa_family) { 1109 #ifdef NS 1110 case AF_NS: 1111 #endif 1112 case AF_INET: 1113 case AF_APPLETALK: 1114 case 0: 1115 return; 1116 } 1117 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1118 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1119 while (cp2 > cp1) 1120 *--cp2 = 0; 1121 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1122 while (cp1 > so_dst.sa.sa_data) 1123 *--cp1 &= *--cp2; 1124 } 1125 1126 char *msgtypes[] = { 1127 "", 1128 "RTM_ADD: Add Route", 1129 "RTM_DELETE: Delete Route", 1130 "RTM_CHANGE: Change Metrics or flags", 1131 "RTM_GET: Report Metrics", 1132 "RTM_LOSING: Kernel Suspects Partitioning", 1133 "RTM_REDIRECT: Told to use different route", 1134 "RTM_MISS: Lookup failed on this address", 1135 "RTM_LOCK: fix specified metrics", 1136 "RTM_OLDADD: caused by SIOCADDRT", 1137 "RTM_OLDDEL: caused by SIOCDELRT", 1138 "RTM_RESOLVE: Route created by cloning", 1139 "RTM_NEWADDR: address being added to iface", 1140 "RTM_DELADDR: address being removed from iface", 1141 "RTM_IFINFO: iface status change", 1142 "RTM_NEWMADDR: new multicast group membership on iface", 1143 "RTM_DELMADDR: multicast group membership removed from iface", 1144 0, 1145 }; 1146 1147 char metricnames[] = 1148 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1149 "\1mtu"; 1150 char routeflags[] = 1151 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1152 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1153 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1154 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1155 char ifnetflags[] = 1156 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1157 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1158 "\017LINK2\020MULTICAST"; 1159 char addrnames[] = 1160 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1161 1162 void 1163 print_rtmsg(rtm, msglen) 1164 register struct rt_msghdr *rtm; 1165 int msglen; 1166 { 1167 struct if_msghdr *ifm; 1168 struct ifa_msghdr *ifam; 1169 #ifdef RTM_NEWMADDR 1170 struct ifma_msghdr *ifmam; 1171 #endif 1172 1173 if (verbose == 0) 1174 return; 1175 if (rtm->rtm_version != RTM_VERSION) { 1176 (void) printf("routing message version %d not understood\n", 1177 rtm->rtm_version); 1178 return; 1179 } 1180 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1181 switch (rtm->rtm_type) { 1182 case RTM_IFINFO: 1183 ifm = (struct if_msghdr *)rtm; 1184 (void) printf("if# %d, flags:", ifm->ifm_index); 1185 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1186 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1187 break; 1188 case RTM_NEWADDR: 1189 case RTM_DELADDR: 1190 ifam = (struct ifa_msghdr *)rtm; 1191 (void) printf("metric %d, flags:", ifam->ifam_metric); 1192 bprintf(stdout, ifam->ifam_flags, routeflags); 1193 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1194 break; 1195 #ifdef RTM_NEWMADDR 1196 case RTM_NEWMADDR: 1197 case RTM_DELMADDR: 1198 ifmam = (struct ifma_msghdr *)rtm; 1199 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1200 break; 1201 #endif 1202 default: 1203 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1204 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1205 bprintf(stdout, rtm->rtm_flags, routeflags); 1206 pmsg_common(rtm); 1207 } 1208 } 1209 1210 void 1211 print_getmsg(rtm, msglen) 1212 register struct rt_msghdr *rtm; 1213 int msglen; 1214 { 1215 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1216 struct sockaddr_dl *ifp = NULL; 1217 register struct sockaddr *sa; 1218 register char *cp; 1219 register int i; 1220 1221 (void) printf(" route to: %s\n", routename(&so_dst)); 1222 if (rtm->rtm_version != RTM_VERSION) { 1223 warnx("routing message version %d not understood", 1224 rtm->rtm_version); 1225 return; 1226 } 1227 if (rtm->rtm_msglen > msglen) { 1228 warnx("message length mismatch, in packet %d, returned %d", 1229 rtm->rtm_msglen, msglen); 1230 } 1231 if (rtm->rtm_errno) { 1232 errno = rtm->rtm_errno; 1233 warn("message indicates error %d", errno); 1234 return; 1235 } 1236 cp = ((char *)(rtm + 1)); 1237 if (rtm->rtm_addrs) 1238 for (i = 1; i; i <<= 1) 1239 if (i & rtm->rtm_addrs) { 1240 sa = (struct sockaddr *)cp; 1241 switch (i) { 1242 case RTA_DST: 1243 dst = sa; 1244 break; 1245 case RTA_GATEWAY: 1246 gate = sa; 1247 break; 1248 case RTA_NETMASK: 1249 mask = sa; 1250 break; 1251 case RTA_IFP: 1252 if (sa->sa_family == AF_LINK && 1253 ((struct sockaddr_dl *)sa)->sdl_nlen) 1254 ifp = (struct sockaddr_dl *)sa; 1255 break; 1256 } 1257 ADVANCE(cp, sa); 1258 } 1259 if (dst && mask) 1260 mask->sa_family = dst->sa_family; /* XXX */ 1261 if (dst) 1262 (void)printf("destination: %s\n", routename(dst)); 1263 if (mask) { 1264 int savenflag = nflag; 1265 1266 nflag = 1; 1267 (void)printf(" mask: %s\n", routename(mask)); 1268 nflag = savenflag; 1269 } 1270 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1271 (void)printf(" gateway: %s\n", routename(gate)); 1272 if (ifp) 1273 (void)printf(" interface: %.*s\n", 1274 ifp->sdl_nlen, ifp->sdl_data); 1275 (void)printf(" flags: "); 1276 bprintf(stdout, rtm->rtm_flags, routeflags); 1277 1278 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1279 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1280 1281 (void) printf("\n%s\n", "\ 1282 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1283 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1284 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1285 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1286 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1287 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1288 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1289 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1290 if (rtm->rtm_rmx.rmx_expire) 1291 rtm->rtm_rmx.rmx_expire -= time(0); 1292 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1293 #undef lock 1294 #undef msec 1295 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1296 if (verbose) 1297 pmsg_common(rtm); 1298 else if (rtm->rtm_addrs &~ RTA_IGN) { 1299 (void) printf("sockaddrs: "); 1300 bprintf(stdout, rtm->rtm_addrs, addrnames); 1301 putchar('\n'); 1302 } 1303 #undef RTA_IGN 1304 } 1305 1306 void 1307 pmsg_common(rtm) 1308 register struct rt_msghdr *rtm; 1309 { 1310 (void) printf("\nlocks: "); 1311 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1312 (void) printf(" inits: "); 1313 bprintf(stdout, rtm->rtm_inits, metricnames); 1314 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1315 } 1316 1317 void 1318 pmsg_addrs(cp, addrs) 1319 char *cp; 1320 int addrs; 1321 { 1322 register struct sockaddr *sa; 1323 int i; 1324 1325 if (addrs == 0) 1326 return; 1327 (void) printf("\nsockaddrs: "); 1328 bprintf(stdout, addrs, addrnames); 1329 (void) putchar('\n'); 1330 for (i = 1; i; i <<= 1) 1331 if (i & addrs) { 1332 sa = (struct sockaddr *)cp; 1333 (void) printf(" %s", routename(sa)); 1334 ADVANCE(cp, sa); 1335 } 1336 (void) putchar('\n'); 1337 (void) fflush(stdout); 1338 } 1339 1340 void 1341 bprintf(fp, b, s) 1342 register FILE *fp; 1343 register int b; 1344 register u_char *s; 1345 { 1346 register int i; 1347 int gotsome = 0; 1348 1349 if (b == 0) 1350 return; 1351 while ((i = *s++) != 0) { 1352 if (b & (1 << (i-1))) { 1353 if (gotsome == 0) 1354 i = '<'; 1355 else 1356 i = ','; 1357 (void) putc(i, fp); 1358 gotsome = 1; 1359 for (; (i = *s) > 32; s++) 1360 (void) putc(i, fp); 1361 } else 1362 while (*s > 32) 1363 s++; 1364 } 1365 if (gotsome) 1366 (void) putc('>', fp); 1367 } 1368 1369 int 1370 keyword(cp) 1371 char *cp; 1372 { 1373 register struct keytab *kt = keywords; 1374 1375 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1376 kt++; 1377 return kt->kt_i; 1378 } 1379 1380 void 1381 sodump(su, which) 1382 register sup su; 1383 char *which; 1384 { 1385 switch (su->sa.sa_family) { 1386 case AF_LINK: 1387 (void) printf("%s: link %s; ", 1388 which, link_ntoa(&su->sdl)); 1389 break; 1390 case AF_INET: 1391 (void) printf("%s: inet %s; ", 1392 which, inet_ntoa(su->sin.sin_addr)); 1393 break; 1394 case AF_APPLETALK: 1395 (void) printf("%s: atalk %s; ", 1396 which, atalk_ntoa(su->sat.sat_addr)); 1397 break; 1398 #ifdef NS 1399 case AF_NS: 1400 (void) printf("%s: xns %s; ", 1401 which, ns_ntoa(su->sns.sns_addr)); 1402 break; 1403 #endif 1404 } 1405 (void) fflush(stdout); 1406 } 1407 1408 /* States*/ 1409 #define VIRGIN 0 1410 #define GOTONE 1 1411 #define GOTTWO 2 1412 /* Inputs */ 1413 #define DIGIT (4*0) 1414 #define END (4*1) 1415 #define DELIM (4*2) 1416 1417 void 1418 sockaddr(addr, sa) 1419 register char *addr; 1420 register struct sockaddr *sa; 1421 { 1422 register char *cp = (char *)sa; 1423 int size = sa->sa_len; 1424 char *cplim = cp + size; 1425 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1426 1427 bzero(cp, size); 1428 cp++; 1429 do { 1430 if ((*addr >= '0') && (*addr <= '9')) { 1431 new = *addr - '0'; 1432 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1433 new = *addr - 'a' + 10; 1434 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1435 new = *addr - 'A' + 10; 1436 } else if (*addr == 0) 1437 state |= END; 1438 else 1439 state |= DELIM; 1440 addr++; 1441 switch (state /* | INPUT */) { 1442 case GOTTWO | DIGIT: 1443 *cp++ = byte; /*FALLTHROUGH*/ 1444 case VIRGIN | DIGIT: 1445 state = GOTONE; byte = new; continue; 1446 case GOTONE | DIGIT: 1447 state = GOTTWO; byte = new + (byte << 4); continue; 1448 default: /* | DELIM */ 1449 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1450 case GOTONE | END: 1451 case GOTTWO | END: 1452 *cp++ = byte; /* FALLTHROUGH */ 1453 case VIRGIN | END: 1454 break; 1455 } 1456 break; 1457 } while (cp < cplim); 1458 sa->sa_len = cp - (char *)sa; 1459 } 1460 1461 int 1462 atalk_aton(const char *text, struct at_addr *addr) 1463 { 1464 u_int net, node; 1465 1466 if (sscanf(text, "%u.%u", &net, &node) != 2 1467 || net > 0xffff || node > 0xff) 1468 return(0); 1469 addr->s_net = htons(net); 1470 addr->s_node = node; 1471 return(1); 1472 } 1473 1474 char * 1475 atalk_ntoa(struct at_addr at) 1476 { 1477 static char buf[20]; 1478 1479 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1480 return(buf); 1481 } 1482