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 "$FreeBSD$"; 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 if (!--argc) 585 usage((char *)NULL); 586 (void) getaddr(RTA_IFA, *++argv, 0); 587 break; 588 case K_IFP: 589 if (!--argc) 590 usage((char *)NULL); 591 (void) getaddr(RTA_IFP, *++argv, 0); 592 break; 593 case K_GENMASK: 594 if (!--argc) 595 usage((char *)NULL); 596 (void) getaddr(RTA_GENMASK, *++argv, 0); 597 break; 598 case K_GATEWAY: 599 if (!--argc) 600 usage((char *)NULL); 601 (void) getaddr(RTA_GATEWAY, *++argv, 0); 602 break; 603 case K_DST: 604 if (!--argc) 605 usage((char *)NULL); 606 ishost = getaddr(RTA_DST, *++argv, &hp); 607 dest = *argv; 608 break; 609 case K_NETMASK: 610 if (!--argc) 611 usage((char *)NULL); 612 (void) getaddr(RTA_NETMASK, *++argv, 0); 613 /* FALLTHROUGH */ 614 case K_NET: 615 forcenet++; 616 break; 617 case K_MTU: 618 case K_HOPCOUNT: 619 case K_EXPIRE: 620 case K_RECVPIPE: 621 case K_SENDPIPE: 622 case K_SSTHRESH: 623 case K_RTT: 624 case K_RTTVAR: 625 if (!--argc) 626 usage((char *)NULL); 627 set_metric(*++argv, key); 628 break; 629 default: 630 usage(1+*argv); 631 } 632 } else { 633 if ((rtm_addrs & RTA_DST) == 0) { 634 dest = *argv; 635 ishost = getaddr(RTA_DST, *argv, &hp); 636 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 637 gateway = *argv; 638 (void) getaddr(RTA_GATEWAY, *argv, &hp); 639 } else { 640 (void) getaddr(RTA_NETMASK, *argv, 0); 641 } 642 } 643 } 644 if (forcehost) 645 ishost = 1; 646 if (forcenet) 647 ishost = 0; 648 flags |= RTF_UP; 649 if (ishost) 650 flags |= RTF_HOST; 651 if (iflag == 0) 652 flags |= RTF_GATEWAY; 653 for (attempts = 1; ; attempts++) { 654 errno = 0; 655 if ((ret = rtmsg(*cmd, flags)) == 0) 656 break; 657 if (errno != ENETUNREACH && errno != ESRCH) 658 break; 659 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 660 hp->h_addr_list++; 661 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr, 662 MIN(hp->h_length, sizeof(so_gate.sin.sin_addr))); 663 } else 664 break; 665 } 666 if (*cmd == 'g') 667 exit(0); 668 oerrno = errno; 669 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 670 if (*gateway) { 671 (void) printf(": gateway %s", gateway); 672 if (attempts > 1 && ret == 0 && af == AF_INET) 673 (void) printf(" (%s)", 674 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 675 } 676 if (ret == 0) 677 (void) printf("\n"); 678 else { 679 switch (oerrno) { 680 case ESRCH: 681 err = "not in table"; 682 break; 683 case EBUSY: 684 err = "entry in use"; 685 break; 686 case ENOBUFS: 687 err = "routing table overflow"; 688 break; 689 default: 690 err = strerror(oerrno); 691 break; 692 } 693 (void) printf(": %s\n", err); 694 } 695 } 696 697 void 698 inet_makenetandmask(net, sin, bits) 699 u_long net, bits; 700 register struct sockaddr_in *sin; 701 { 702 u_long addr, mask = 0; 703 register char *cp; 704 705 rtm_addrs |= RTA_NETMASK; 706 if (net == 0) 707 mask = addr = 0; 708 else if (bits) { 709 addr = net; 710 mask = 0xffffffff << (32 - bits); 711 } else if (net < 128) { 712 addr = net << IN_CLASSA_NSHIFT; 713 mask = IN_CLASSA_NET; 714 } else if (net < 65536) { 715 addr = net << IN_CLASSB_NSHIFT; 716 mask = IN_CLASSB_NET; 717 } else if (net < 16777216L) { 718 addr = net << IN_CLASSC_NSHIFT; 719 mask = IN_CLASSC_NET; 720 } else { 721 addr = net; 722 if ((addr & IN_CLASSA_HOST) == 0) 723 mask = IN_CLASSA_NET; 724 else if ((addr & IN_CLASSB_HOST) == 0) 725 mask = IN_CLASSB_NET; 726 else if ((addr & IN_CLASSC_HOST) == 0) 727 mask = IN_CLASSC_NET; 728 else 729 mask = -1; 730 } 731 sin->sin_addr.s_addr = htonl(addr); 732 sin = &so_mask.sin; 733 sin->sin_addr.s_addr = htonl(mask); 734 sin->sin_len = 0; 735 sin->sin_family = 0; 736 cp = (char *)(&sin->sin_addr + 1); 737 while (*--cp == 0 && cp > (char *)sin) 738 ; 739 sin->sin_len = 1 + cp - (char *)sin; 740 } 741 742 /* 743 * Interpret an argument as a network address of some kind, 744 * returning 1 if a host address, 0 if a network address. 745 */ 746 int 747 getaddr(which, s, hpp) 748 int which; 749 char *s; 750 struct hostent **hpp; 751 { 752 register sup su; 753 #ifdef NS 754 struct ns_addr ns_addr(); 755 #endif 756 struct hostent *hp; 757 struct netent *np; 758 u_long val; 759 char *q,qs; 760 761 if (af == 0) { 762 af = AF_INET; 763 aflen = sizeof(struct sockaddr_in); 764 } 765 rtm_addrs |= which; 766 switch (which) { 767 case RTA_DST: 768 su = &so_dst; 769 break; 770 case RTA_GATEWAY: 771 su = &so_gate; 772 if (iflag) { 773 #define MAX_IFACES 400 774 int sock; 775 struct ifreq iflist[MAX_IFACES]; 776 struct ifconf ifconf; 777 struct ifreq *ifr, *ifr_end; 778 struct sockaddr_dl *dl, *sdl = NULL; 779 780 /* Get socket */ 781 if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0) 782 err(1, "socket"); 783 784 /* Get interface list */ 785 ifconf.ifc_req = iflist; 786 ifconf.ifc_len = sizeof(iflist); 787 if (ioctl(sock, SIOCGIFCONF, &ifconf) < 0) 788 err(1, "ioctl(SIOCGIFCONF)"); 789 close(sock); 790 791 /* Look for this interface in the list */ 792 for (ifr = ifconf.ifc_req, 793 ifr_end = (struct ifreq *) 794 (ifconf.ifc_buf + ifconf.ifc_len); 795 ifr < ifr_end; 796 ifr = (struct ifreq *) ((char *) &ifr->ifr_addr 797 + MAX(ifr->ifr_addr.sa_len, 798 sizeof(ifr->ifr_addr)))) { 799 dl = (struct sockaddr_dl *)&ifr->ifr_addr; 800 if (ifr->ifr_addr.sa_family == AF_LINK 801 && (ifr->ifr_flags & IFF_POINTOPOINT) 802 && !strncmp(s, dl->sdl_data, dl->sdl_nlen) 803 && s[dl->sdl_nlen] == 0) { 804 sdl = dl; 805 break; 806 } 807 } 808 809 /* If we found it, then use it */ 810 if (sdl) { 811 su->sdl = *sdl; 812 return(1); 813 } 814 } 815 break; 816 case RTA_NETMASK: 817 su = &so_mask; 818 break; 819 case RTA_GENMASK: 820 su = &so_genmask; 821 break; 822 case RTA_IFP: 823 su = &so_ifp; 824 break; 825 case RTA_IFA: 826 su = &so_ifa; 827 break; 828 default: 829 usage("internal error"); 830 /*NOTREACHED*/ 831 } 832 su->sa.sa_len = aflen; 833 su->sa.sa_family = af; /* cases that don't want it have left already */ 834 if (strcmp(s, "default") == 0) { 835 /* 836 * Default is net 0.0.0.0/0 837 */ 838 switch (which) { 839 case RTA_DST: 840 forcenet++; 841 /* bzero(su, sizeof(*su)); *//* for readability */ 842 (void) getaddr(RTA_NETMASK, s, 0); 843 break; 844 case RTA_NETMASK: 845 case RTA_GENMASK: 846 /* bzero(su, sizeof(*su)); *//* for readability */ 847 } 848 return (0); 849 } 850 switch (af) { 851 #ifdef NS 852 case AF_NS: 853 if (which == RTA_DST) { 854 extern short ns_bh[3]; 855 struct sockaddr_ns *sms = &(so_mask.sns); 856 bzero((char *)sms, sizeof(*sms)); 857 sms->sns_family = 0; 858 sms->sns_len = 6; 859 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 860 rtm_addrs |= RTA_NETMASK; 861 } 862 su->sns.sns_addr = ns_addr(s); 863 return (!ns_nullhost(su->sns.sns_addr)); 864 #endif 865 866 867 case AF_APPLETALK: 868 if (!atalk_aton(s, &su->sat.sat_addr)) 869 errx(EX_NOHOST, "bad address: %s", s); 870 rtm_addrs |= RTA_NETMASK; 871 return(forcehost || su->sat.sat_addr.s_node != 0); 872 873 case AF_LINK: 874 link_addr(s, &su->sdl); 875 return (1); 876 877 878 case PF_ROUTE: 879 su->sa.sa_len = sizeof(*su); 880 sockaddr(s, &su->sa); 881 return (1); 882 883 case AF_INET: 884 default: 885 break; 886 } 887 888 if (hpp == NULL) 889 hpp = &hp; 890 *hpp = NULL; 891 892 q = strchr(s,'/'); 893 if (q && which == RTA_DST) { 894 qs = *q; 895 *q = '\0'; 896 if (((val = inet_addr(s)) != INADDR_NONE)) { 897 inet_makenetandmask( 898 htonl(val), &su->sin, strtoul(q+1, 0, 0)); 899 return (0); 900 } 901 *q =qs; 902 } 903 if (((val = inet_addr(s)) != INADDR_NONE) && 904 (which != RTA_DST || forcenet == 0)) { 905 su->sin.sin_addr.s_addr = val; 906 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 907 return (1); 908 else { 909 val = ntohl(val); 910 goto netdone; 911 } 912 } 913 if ((val = inet_network(s)) != INADDR_NONE || 914 (forcehost == 0 && (np = getnetbyname(s)) != NULL && 915 (val = np->n_net) != 0)) { 916 netdone: 917 if (which == RTA_DST) 918 inet_makenetandmask(val, &su->sin, 0); 919 return (0); 920 } 921 hp = gethostbyname(s); 922 if (hp) { 923 *hpp = hp; 924 su->sin.sin_family = hp->h_addrtype; 925 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, 926 MIN(hp->h_length, sizeof(su->sin.sin_addr))); 927 return (1); 928 } 929 errx(EX_NOHOST, "bad address: %s", s); 930 } 931 932 933 #ifdef NS 934 short ns_nullh[] = {0,0,0}; 935 short ns_bh[] = {-1,-1,-1}; 936 937 char * 938 ns_print(sns) 939 struct sockaddr_ns *sns; 940 { 941 struct ns_addr work; 942 union { union ns_net net_e; u_long long_e; } net; 943 u_short port; 944 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 945 char *host = ""; 946 register char *p; 947 register u_char *q; 948 949 work = sns->sns_addr; 950 port = ntohs(work.x_port); 951 work.x_port = 0; 952 net.net_e = work.x_net; 953 if (ns_nullhost(work) && net.long_e == 0) { 954 if (!port) 955 return ("*.*"); 956 (void) sprintf(mybuf, "*.%XH", port); 957 return (mybuf); 958 } 959 960 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0) 961 host = "any"; 962 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0) 963 host = "*"; 964 else { 965 q = work.x_host.c_host; 966 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 967 q[0], q[1], q[2], q[3], q[4], q[5]); 968 for (p = chost; *p == '0' && p < chost + 12; p++) 969 /* void */; 970 host = p; 971 } 972 if (port) 973 (void) sprintf(cport, ".%XH", htons(port)); 974 else 975 *cport = 0; 976 977 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 978 (unsigned long)ntohl(net.long_e), 979 host, cport); 980 return (mybuf); 981 } 982 #endif 983 984 void 985 interfaces() 986 { 987 size_t needed; 988 int mib[6]; 989 char *buf, *lim, *next; 990 register struct rt_msghdr *rtm; 991 992 mib[0] = CTL_NET; 993 mib[1] = PF_ROUTE; 994 mib[2] = 0; /* protocol */ 995 mib[3] = 0; /* wildcard address family */ 996 mib[4] = NET_RT_IFLIST; 997 mib[5] = 0; /* no flags */ 998 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 999 err(EX_OSERR, "route-sysctl-estimate"); 1000 if ((buf = malloc(needed)) == NULL) 1001 errx(EX_OSERR, "malloc failed"); 1002 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1003 err(EX_OSERR, "actual retrieval of interface table"); 1004 lim = buf + needed; 1005 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1006 rtm = (struct rt_msghdr *)next; 1007 print_rtmsg(rtm, rtm->rtm_msglen); 1008 } 1009 } 1010 1011 void 1012 monitor() 1013 { 1014 int n; 1015 char msg[2048]; 1016 1017 verbose = 1; 1018 if (debugonly) { 1019 interfaces(); 1020 exit(0); 1021 } 1022 for(;;) { 1023 n = read(s, msg, 2048); 1024 (void) printf("got message of size %d\n", n); 1025 print_rtmsg((struct rt_msghdr *)msg, n); 1026 } 1027 } 1028 1029 struct { 1030 struct rt_msghdr m_rtm; 1031 char m_space[512]; 1032 } m_rtmsg; 1033 1034 int 1035 rtmsg(cmd, flags) 1036 int cmd, flags; 1037 { 1038 static int seq; 1039 int rlen; 1040 register char *cp = m_rtmsg.m_space; 1041 register int l; 1042 1043 #define NEXTADDR(w, u) \ 1044 if (rtm_addrs & (w)) {\ 1045 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 1046 if (verbose) sodump(&(u),"u");\ 1047 } 1048 1049 errno = 0; 1050 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 1051 if (cmd == 'a') 1052 cmd = RTM_ADD; 1053 else if (cmd == 'c') 1054 cmd = RTM_CHANGE; 1055 else if (cmd == 'g') { 1056 cmd = RTM_GET; 1057 if (so_ifp.sa.sa_family == 0) { 1058 so_ifp.sa.sa_family = AF_LINK; 1059 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1060 rtm_addrs |= RTA_IFP; 1061 } 1062 } else 1063 cmd = RTM_DELETE; 1064 #define rtm m_rtmsg.m_rtm 1065 rtm.rtm_type = cmd; 1066 rtm.rtm_flags = flags; 1067 rtm.rtm_version = RTM_VERSION; 1068 rtm.rtm_seq = ++seq; 1069 rtm.rtm_addrs = rtm_addrs; 1070 rtm.rtm_rmx = rt_metrics; 1071 rtm.rtm_inits = rtm_inits; 1072 1073 if (rtm_addrs & RTA_NETMASK) 1074 mask_addr(); 1075 NEXTADDR(RTA_DST, so_dst); 1076 NEXTADDR(RTA_GATEWAY, so_gate); 1077 NEXTADDR(RTA_NETMASK, so_mask); 1078 NEXTADDR(RTA_GENMASK, so_genmask); 1079 NEXTADDR(RTA_IFP, so_ifp); 1080 NEXTADDR(RTA_IFA, so_ifa); 1081 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1082 if (verbose) 1083 print_rtmsg(&rtm, l); 1084 if (debugonly) 1085 return (0); 1086 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1087 warn("writing to routing socket"); 1088 return (-1); 1089 } 1090 if (cmd == RTM_GET) { 1091 do { 1092 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1093 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1094 if (l < 0) 1095 warn("read from routing socket"); 1096 else 1097 print_getmsg(&rtm, l); 1098 } 1099 #undef rtm 1100 return (0); 1101 } 1102 1103 void 1104 mask_addr() 1105 { 1106 int olen = so_mask.sa.sa_len; 1107 register char *cp1 = olen + (char *)&so_mask, *cp2; 1108 1109 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1110 if (*--cp1 != 0) { 1111 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1112 break; 1113 } 1114 if ((rtm_addrs & RTA_DST) == 0) 1115 return; 1116 switch (so_dst.sa.sa_family) { 1117 #ifdef NS 1118 case AF_NS: 1119 #endif 1120 case AF_INET: 1121 case AF_APPLETALK: 1122 case 0: 1123 return; 1124 } 1125 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1126 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1127 while (cp2 > cp1) 1128 *--cp2 = 0; 1129 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1130 while (cp1 > so_dst.sa.sa_data) 1131 *--cp1 &= *--cp2; 1132 } 1133 1134 char *msgtypes[] = { 1135 "", 1136 "RTM_ADD: Add Route", 1137 "RTM_DELETE: Delete Route", 1138 "RTM_CHANGE: Change Metrics or flags", 1139 "RTM_GET: Report Metrics", 1140 "RTM_LOSING: Kernel Suspects Partitioning", 1141 "RTM_REDIRECT: Told to use different route", 1142 "RTM_MISS: Lookup failed on this address", 1143 "RTM_LOCK: fix specified metrics", 1144 "RTM_OLDADD: caused by SIOCADDRT", 1145 "RTM_OLDDEL: caused by SIOCDELRT", 1146 "RTM_RESOLVE: Route created by cloning", 1147 "RTM_NEWADDR: address being added to iface", 1148 "RTM_DELADDR: address being removed from iface", 1149 "RTM_IFINFO: iface status change", 1150 "RTM_NEWMADDR: new multicast group membership on iface", 1151 "RTM_DELMADDR: multicast group membership removed from iface", 1152 0, 1153 }; 1154 1155 char metricnames[] = 1156 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1157 "\1mtu"; 1158 char routeflags[] = 1159 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1160 "\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1161 "\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1162 "\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1163 char ifnetflags[] = 1164 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1165 "\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1166 "\017LINK2\020MULTICAST"; 1167 char addrnames[] = 1168 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1169 1170 void 1171 print_rtmsg(rtm, msglen) 1172 register struct rt_msghdr *rtm; 1173 int msglen; 1174 { 1175 struct if_msghdr *ifm; 1176 struct ifa_msghdr *ifam; 1177 #ifdef RTM_NEWMADDR 1178 struct ifma_msghdr *ifmam; 1179 #endif 1180 1181 if (verbose == 0) 1182 return; 1183 if (rtm->rtm_version != RTM_VERSION) { 1184 (void) printf("routing message version %d not understood\n", 1185 rtm->rtm_version); 1186 return; 1187 } 1188 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1189 switch (rtm->rtm_type) { 1190 case RTM_IFINFO: 1191 ifm = (struct if_msghdr *)rtm; 1192 (void) printf("if# %d, flags:", ifm->ifm_index); 1193 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1194 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1195 break; 1196 case RTM_NEWADDR: 1197 case RTM_DELADDR: 1198 ifam = (struct ifa_msghdr *)rtm; 1199 (void) printf("metric %d, flags:", ifam->ifam_metric); 1200 bprintf(stdout, ifam->ifam_flags, routeflags); 1201 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1202 break; 1203 #ifdef RTM_NEWMADDR 1204 case RTM_NEWMADDR: 1205 case RTM_DELMADDR: 1206 ifmam = (struct ifma_msghdr *)rtm; 1207 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1208 break; 1209 #endif 1210 default: 1211 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1212 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1213 bprintf(stdout, rtm->rtm_flags, routeflags); 1214 pmsg_common(rtm); 1215 } 1216 } 1217 1218 void 1219 print_getmsg(rtm, msglen) 1220 register struct rt_msghdr *rtm; 1221 int msglen; 1222 { 1223 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1224 struct sockaddr_dl *ifp = NULL; 1225 register struct sockaddr *sa; 1226 register char *cp; 1227 register int i; 1228 1229 (void) printf(" route to: %s\n", routename(&so_dst)); 1230 if (rtm->rtm_version != RTM_VERSION) { 1231 warnx("routing message version %d not understood", 1232 rtm->rtm_version); 1233 return; 1234 } 1235 if (rtm->rtm_msglen > msglen) { 1236 warnx("message length mismatch, in packet %d, returned %d", 1237 rtm->rtm_msglen, msglen); 1238 } 1239 if (rtm->rtm_errno) { 1240 errno = rtm->rtm_errno; 1241 warn("message indicates error %d", errno); 1242 return; 1243 } 1244 cp = ((char *)(rtm + 1)); 1245 if (rtm->rtm_addrs) 1246 for (i = 1; i; i <<= 1) 1247 if (i & rtm->rtm_addrs) { 1248 sa = (struct sockaddr *)cp; 1249 switch (i) { 1250 case RTA_DST: 1251 dst = sa; 1252 break; 1253 case RTA_GATEWAY: 1254 gate = sa; 1255 break; 1256 case RTA_NETMASK: 1257 mask = sa; 1258 break; 1259 case RTA_IFP: 1260 if (sa->sa_family == AF_LINK && 1261 ((struct sockaddr_dl *)sa)->sdl_nlen) 1262 ifp = (struct sockaddr_dl *)sa; 1263 break; 1264 } 1265 ADVANCE(cp, sa); 1266 } 1267 if (dst && mask) 1268 mask->sa_family = dst->sa_family; /* XXX */ 1269 if (dst) 1270 (void)printf("destination: %s\n", routename(dst)); 1271 if (mask) { 1272 int savenflag = nflag; 1273 1274 nflag = 1; 1275 (void)printf(" mask: %s\n", routename(mask)); 1276 nflag = savenflag; 1277 } 1278 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1279 (void)printf(" gateway: %s\n", routename(gate)); 1280 if (ifp) 1281 (void)printf(" interface: %.*s\n", 1282 ifp->sdl_nlen, ifp->sdl_data); 1283 (void)printf(" flags: "); 1284 bprintf(stdout, rtm->rtm_flags, routeflags); 1285 1286 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1287 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1288 1289 (void) printf("\n%s\n", "\ 1290 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1291 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1292 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1293 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1294 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1295 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1296 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1297 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1298 if (rtm->rtm_rmx.rmx_expire) 1299 rtm->rtm_rmx.rmx_expire -= time(0); 1300 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1301 #undef lock 1302 #undef msec 1303 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1304 if (verbose) 1305 pmsg_common(rtm); 1306 else if (rtm->rtm_addrs &~ RTA_IGN) { 1307 (void) printf("sockaddrs: "); 1308 bprintf(stdout, rtm->rtm_addrs, addrnames); 1309 putchar('\n'); 1310 } 1311 #undef RTA_IGN 1312 } 1313 1314 void 1315 pmsg_common(rtm) 1316 register struct rt_msghdr *rtm; 1317 { 1318 (void) printf("\nlocks: "); 1319 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1320 (void) printf(" inits: "); 1321 bprintf(stdout, rtm->rtm_inits, metricnames); 1322 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1323 } 1324 1325 void 1326 pmsg_addrs(cp, addrs) 1327 char *cp; 1328 int addrs; 1329 { 1330 register struct sockaddr *sa; 1331 int i; 1332 1333 if (addrs == 0) 1334 return; 1335 (void) printf("\nsockaddrs: "); 1336 bprintf(stdout, addrs, addrnames); 1337 (void) putchar('\n'); 1338 for (i = 1; i; i <<= 1) 1339 if (i & addrs) { 1340 sa = (struct sockaddr *)cp; 1341 (void) printf(" %s", routename(sa)); 1342 ADVANCE(cp, sa); 1343 } 1344 (void) putchar('\n'); 1345 (void) fflush(stdout); 1346 } 1347 1348 void 1349 bprintf(fp, b, s) 1350 register FILE *fp; 1351 register int b; 1352 register u_char *s; 1353 { 1354 register int i; 1355 int gotsome = 0; 1356 1357 if (b == 0) 1358 return; 1359 while ((i = *s++) != 0) { 1360 if (b & (1 << (i-1))) { 1361 if (gotsome == 0) 1362 i = '<'; 1363 else 1364 i = ','; 1365 (void) putc(i, fp); 1366 gotsome = 1; 1367 for (; (i = *s) > 32; s++) 1368 (void) putc(i, fp); 1369 } else 1370 while (*s > 32) 1371 s++; 1372 } 1373 if (gotsome) 1374 (void) putc('>', fp); 1375 } 1376 1377 int 1378 keyword(cp) 1379 char *cp; 1380 { 1381 register struct keytab *kt = keywords; 1382 1383 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1384 kt++; 1385 return kt->kt_i; 1386 } 1387 1388 void 1389 sodump(su, which) 1390 register sup su; 1391 char *which; 1392 { 1393 switch (su->sa.sa_family) { 1394 case AF_LINK: 1395 (void) printf("%s: link %s; ", 1396 which, link_ntoa(&su->sdl)); 1397 break; 1398 case AF_INET: 1399 (void) printf("%s: inet %s; ", 1400 which, inet_ntoa(su->sin.sin_addr)); 1401 break; 1402 case AF_APPLETALK: 1403 (void) printf("%s: atalk %s; ", 1404 which, atalk_ntoa(su->sat.sat_addr)); 1405 break; 1406 #ifdef NS 1407 case AF_NS: 1408 (void) printf("%s: xns %s; ", 1409 which, ns_ntoa(su->sns.sns_addr)); 1410 break; 1411 #endif 1412 } 1413 (void) fflush(stdout); 1414 } 1415 1416 /* States*/ 1417 #define VIRGIN 0 1418 #define GOTONE 1 1419 #define GOTTWO 2 1420 /* Inputs */ 1421 #define DIGIT (4*0) 1422 #define END (4*1) 1423 #define DELIM (4*2) 1424 1425 void 1426 sockaddr(addr, sa) 1427 register char *addr; 1428 register struct sockaddr *sa; 1429 { 1430 register char *cp = (char *)sa; 1431 int size = sa->sa_len; 1432 char *cplim = cp + size; 1433 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1434 1435 bzero(cp, size); 1436 cp++; 1437 do { 1438 if ((*addr >= '0') && (*addr <= '9')) { 1439 new = *addr - '0'; 1440 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1441 new = *addr - 'a' + 10; 1442 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1443 new = *addr - 'A' + 10; 1444 } else if (*addr == 0) 1445 state |= END; 1446 else 1447 state |= DELIM; 1448 addr++; 1449 switch (state /* | INPUT */) { 1450 case GOTTWO | DIGIT: 1451 *cp++ = byte; /*FALLTHROUGH*/ 1452 case VIRGIN | DIGIT: 1453 state = GOTONE; byte = new; continue; 1454 case GOTONE | DIGIT: 1455 state = GOTTWO; byte = new + (byte << 4); continue; 1456 default: /* | DELIM */ 1457 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1458 case GOTONE | END: 1459 case GOTTWO | END: 1460 *cp++ = byte; /* FALLTHROUGH */ 1461 case VIRGIN | END: 1462 break; 1463 } 1464 break; 1465 } while (cp < cplim); 1466 sa->sa_len = cp - (char *)sa; 1467 } 1468 1469 int 1470 atalk_aton(const char *text, struct at_addr *addr) 1471 { 1472 u_int net, node; 1473 1474 if (sscanf(text, "%u.%u", &net, &node) != 2 1475 || net > 0xffff || node > 0xff) 1476 return(0); 1477 addr->s_net = htons(net); 1478 addr->s_node = node; 1479 return(1); 1480 } 1481 1482 char * 1483 atalk_ntoa(struct at_addr at) 1484 { 1485 static char buf[20]; 1486 1487 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1488 return(buf); 1489 } 1490