route.c revision 1.18
1 /* $NetBSD: route.c,v 1.18 1997/02/22 21:22:26 carrel Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1989, 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 static char copyright[] = 38 "@(#) Copyright (c) 1983, 1989, 1991, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)route.c 8.3 (Berkeley) 3/19/94"; 45 #else 46 static char rcsid[] = "$NetBSD: route.c,v 1.18 1997/02/22 21:22:26 carrel Exp $"; 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/file.h> 52 #include <sys/socket.h> 53 #include <sys/ioctl.h> 54 #include <sys/mbuf.h> 55 #include <sys/sysctl.h> 56 57 #include <net/if.h> 58 #include <net/route.h> 59 #include <net/if_dl.h> 60 #include <netinet/in.h> 61 #include <netns/ns.h> 62 #include <netiso/iso.h> 63 #include <netccitt/x25.h> 64 #include <arpa/inet.h> 65 #include <netdb.h> 66 67 #include <errno.h> 68 #include <unistd.h> 69 #include <stdio.h> 70 #include <ctype.h> 71 #include <stdlib.h> 72 #include <string.h> 73 #include <paths.h> 74 75 #include "keywords.h" 76 77 struct ortentry route; 78 union sockunion { 79 struct sockaddr sa; 80 struct sockaddr_in sin; 81 struct sockaddr_ns sns; 82 struct sockaddr_iso siso; 83 struct sockaddr_dl sdl; 84 struct sockaddr_x25 sx25; 85 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 86 87 typedef union sockunion *sup; 88 int pid, rtm_addrs; 89 int s; 90 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 91 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 92 int locking, lockrest, debugonly; 93 struct rt_metrics rt_metrics; 94 u_long rtm_inits; 95 struct in_addr inet_makeaddr(); 96 char *routename(), *netname(); 97 void flushroutes(), newroute(), monitor(), sockaddr(), sodump(); 98 void print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(); 99 void bprintf(), mask_addr(); 100 int getaddr(), rtmsg(), x25_makemask(); 101 extern char *inet_ntoa(), *iso_ntoa(), *link_ntoa(); 102 extern void show(); 103 104 __dead void 105 usage(cp) 106 char *cp; 107 { 108 if (cp) 109 (void) fprintf(stderr, "route: botched keyword: %s\n", cp); 110 (void) fprintf(stderr, 111 "usage: route [ -nqv ] cmd [[ -<qualifers> ] args ]\n"); 112 exit(1); 113 /* NOTREACHED */ 114 } 115 116 void 117 quit(s) 118 char *s; 119 { 120 int sverrno = errno; 121 122 (void) fprintf(stderr, "route: "); 123 if (s) 124 (void) fprintf(stderr, "%s: ", s); 125 (void) fprintf(stderr, "%s\n", strerror(sverrno)); 126 exit(1); 127 /* NOTREACHED */ 128 } 129 130 #define ROUNDUP(a) \ 131 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 132 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 133 134 int 135 main(argc, argv) 136 int argc; 137 char **argv; 138 { 139 extern int optind; 140 int ch; 141 142 if (argc < 2) 143 usage((char *)NULL); 144 145 while ((ch = getopt(argc, argv, "nqdtv")) != EOF) 146 switch(ch) { 147 case 'n': 148 nflag = 1; 149 break; 150 case 'q': 151 qflag = 1; 152 break; 153 case 'v': 154 verbose = 1; 155 break; 156 case 't': 157 tflag = 1; 158 break; 159 case 'd': 160 debugonly = 1; 161 break; 162 case '?': 163 default: 164 usage((char *)NULL); 165 } 166 argc -= optind; 167 argv += optind; 168 169 pid = getpid(); 170 if (tflag) 171 s = open("/dev/null", O_WRONLY, 0); 172 else 173 s = socket(PF_ROUTE, SOCK_RAW, 0); 174 if (s < 0) 175 quit("socket"); 176 177 if (*argv == NULL) 178 goto no_cmd; 179 switch (keyword(*argv)) { 180 181 #ifndef SMALL 182 case K_GET: 183 #endif /* SMALL */ 184 case K_CHANGE: 185 case K_ADD: 186 case K_DELETE: 187 newroute(argc, argv); 188 break; 189 190 case K_SHOW: 191 show(argc, argv); 192 break; 193 194 #ifndef SMALL 195 case K_MONITOR: 196 monitor(); 197 break; 198 199 case K_FLUSH: 200 flushroutes(argc, argv); 201 break; 202 #endif /* SMALL */ 203 204 no_cmd: 205 default: 206 usage(*argv); 207 return 1; 208 } 209 return 0; 210 } 211 212 #ifndef SMALL 213 /* 214 * Purge all entries in the routing tables not 215 * associated with network interfaces. 216 */ 217 void 218 flushroutes(argc, argv) 219 int argc; 220 char *argv[]; 221 { 222 size_t needed; 223 int mib[6], rlen, seqno; 224 char *buf, *next, *lim; 225 register struct rt_msghdr *rtm; 226 227 shutdown(s, 0); /* Don't want to read back our messages */ 228 if (argc > 1) { 229 argv++; 230 if (argc == 2 && **argv == '-') 231 switch (keyword(*argv + 1)) { 232 case K_INET: 233 af = AF_INET; 234 break; 235 case K_XNS: 236 af = AF_NS; 237 break; 238 case K_LINK: 239 af = AF_LINK; 240 break; 241 case K_ISO: 242 case K_OSI: 243 af = AF_ISO; 244 break; 245 case K_X25: 246 af = AF_CCITT; 247 default: 248 goto bad; 249 } else 250 bad: usage(*argv); 251 } 252 mib[0] = CTL_NET; 253 mib[1] = PF_ROUTE; 254 mib[2] = 0; /* protocol */ 255 mib[3] = 0; /* wildcard address family */ 256 mib[4] = NET_RT_DUMP; 257 mib[5] = 0; /* no flags */ 258 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 259 quit("route-sysctl-estimate"); 260 if ((buf = malloc(needed)) == NULL) 261 quit("malloc"); 262 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 263 quit("actual retrieval of routing table"); 264 lim = buf + needed; 265 if (verbose) { 266 (void) printf("Examining routing table from sysctl\n"); 267 if (af) printf("(address family %s)\n", (*argv + 1)); 268 } 269 seqno = 0; /* ??? */ 270 for (next = buf; next < lim; next += rtm->rtm_msglen) { 271 rtm = (struct rt_msghdr *)next; 272 if (verbose) 273 print_rtmsg(rtm, rtm->rtm_msglen); 274 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 275 continue; 276 if (af) { 277 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 278 279 if (sa->sa_family != af) 280 continue; 281 } 282 if (debugonly) 283 continue; 284 rtm->rtm_type = RTM_DELETE; 285 rtm->rtm_seq = seqno; 286 rlen = write(s, next, rtm->rtm_msglen); 287 if (rlen < (int)rtm->rtm_msglen) { 288 (void) fprintf(stderr, 289 "route: write to routing socket: %s\n", 290 strerror(errno)); 291 (void) printf("got only %d for rlen\n", rlen); 292 break; 293 } 294 seqno++; 295 if (qflag) 296 continue; 297 if (verbose) 298 print_rtmsg(rtm, rlen); 299 else { 300 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 301 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 302 routename(sa) : netname(sa)); 303 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 304 (void) printf("%-20.20s ", routename(sa)); 305 (void) printf("done\n"); 306 } 307 } 308 } 309 #endif /* SMALL */ 310 311 312 static char hexlist[] = "0123456789abcdef"; 313 314 char * 315 any_ntoa(sa) 316 const struct sockaddr *sa; 317 { 318 static char obuf[64]; 319 const char *in; 320 char *out; 321 int len; 322 323 len = sa->sa_len; 324 in = sa->sa_data; 325 out = obuf; 326 327 do { 328 *out++ = hexlist[(*in >> 4) & 15]; 329 *out++ = hexlist[(*in++) & 15]; 330 *out++ = '.'; 331 } while (--len > 0); 332 out[-1] = '\0'; 333 return obuf; 334 } 335 336 337 char * 338 routename(sa) 339 struct sockaddr *sa; 340 { 341 register char *cp; 342 static char line[50]; 343 struct hostent *hp; 344 static char domain[MAXHOSTNAMELEN + 1]; 345 static int first = 1; 346 char *ns_print(); 347 struct in_addr in; 348 349 if (first) { 350 first = 0; 351 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 352 (cp = strchr(domain, '.'))) 353 (void) strcpy(domain, cp + 1); 354 else 355 domain[0] = 0; 356 } 357 358 if (sa->sa_len == 0) 359 strcpy(line, "default"); 360 else switch (sa->sa_family) { 361 362 case AF_INET: 363 in = ((struct sockaddr_in *)sa)->sin_addr; 364 365 cp = 0; 366 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 367 cp = "default"; 368 if (cp == 0 && !nflag) { 369 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 370 AF_INET); 371 if (hp) { 372 if ((cp = strchr(hp->h_name, '.')) && 373 !strcmp(cp + 1, domain)) 374 *cp = 0; 375 cp = hp->h_name; 376 } 377 } 378 if (cp) 379 strcpy(line, cp); 380 else 381 strcpy(line, inet_ntoa(in)); 382 break; 383 384 case AF_LINK: 385 return (link_ntoa((struct sockaddr_dl *)sa)); 386 387 #ifndef SMALL 388 case AF_NS: 389 return (ns_print((struct sockaddr_ns *)sa)); 390 391 case AF_ISO: 392 (void) sprintf(line, "iso %s", 393 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 394 break; 395 #endif /* SMALL */ 396 397 default: 398 (void) sprintf(line, "(%d) %s", 399 sa->sa_family, any_ntoa(sa)); 400 break; 401 402 } 403 return (line); 404 } 405 406 /* 407 * Return the name of the network whose address is given. 408 * The address is assumed to be that of a net or subnet, not a host. 409 */ 410 char * 411 netname(sa) 412 struct sockaddr *sa; 413 { 414 char *cp = 0; 415 static char line[50]; 416 struct netent *np = 0; 417 u_long net, mask; 418 register u_long i; 419 int subnetshift; 420 char *ns_print(); 421 struct in_addr in; 422 423 switch (sa->sa_family) { 424 425 case AF_INET: 426 in = ((struct sockaddr_in *)sa)->sin_addr; 427 i = ntohl(in.s_addr); 428 if (i == 0) 429 cp = "default"; 430 else if (!nflag) { 431 if (IN_CLASSA(i)) { 432 mask = IN_CLASSA_NET; 433 subnetshift = 8; 434 } else if (IN_CLASSB(i)) { 435 mask = IN_CLASSB_NET; 436 subnetshift = 8; 437 } else { 438 mask = IN_CLASSC_NET; 439 subnetshift = 4; 440 } 441 /* 442 * If there are more bits than the standard mask 443 * would suggest, subnets must be in use. 444 * Guess at the subnet mask, assuming reasonable 445 * width subnet fields. 446 */ 447 while (i &~ mask) 448 mask = (long)mask >> subnetshift; 449 net = i & mask; 450 while ((mask & 1) == 0) 451 mask >>= 1, net >>= 1; 452 np = getnetbyaddr(net, AF_INET); 453 if (np) 454 cp = np->n_name; 455 } 456 if (cp) 457 strcpy(line, cp); 458 else { 459 #if 0 /* XXX - This is silly... */ 460 #define C(x) ((x) & 0xff) 461 if ((i & 0xffffff) == 0) 462 (void) sprintf(line, "%u", C(i >> 24)); 463 else if ((i & 0xffff) == 0) 464 (void) sprintf(line, "%u.%u", C(i >> 24), 465 C(i >> 16)); 466 else if ((i & 0xff) == 0) 467 (void) sprintf(line, "%u.%u.%u", C(i >> 24), 468 C(i >> 16), C(i >> 8)); 469 else 470 (void) sprintf(line, "%u.%u.%u.%u", C(i >> 24), 471 C(i >> 16), C(i >> 8), C(i)); 472 #undef C 473 #else /* XXX */ 474 strcpy(line, inet_ntoa(in)); 475 #endif /* XXX */ 476 } 477 break; 478 479 case AF_LINK: 480 return (link_ntoa((struct sockaddr_dl *)sa)); 481 482 #ifndef SMALL 483 case AF_NS: 484 return (ns_print((struct sockaddr_ns *)sa)); 485 486 case AF_ISO: 487 (void) sprintf(line, "iso %s", 488 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 489 break; 490 #endif /* SMALL */ 491 492 default: 493 (void) sprintf(line, "af %d: %s", 494 sa->sa_family, any_ntoa(sa)); 495 break; 496 } 497 return (line); 498 } 499 500 void 501 set_metric(value, key) 502 char *value; 503 int key; 504 { 505 int flag = 0; 506 u_long noval, *valp = &noval; 507 508 switch (key) { 509 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 510 caseof(K_MTU, RTV_MTU, rmx_mtu); 511 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 512 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 513 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 514 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 515 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 516 caseof(K_RTT, RTV_RTT, rmx_rtt); 517 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 518 } 519 rtm_inits |= flag; 520 if (lockrest || locking) 521 rt_metrics.rmx_locks |= flag; 522 if (locking) 523 locking = 0; 524 *valp = atoi(value); 525 } 526 527 void 528 newroute(argc, argv) 529 int argc; 530 register char **argv; 531 { 532 char *cmd, *dest = "", *gateway = "", *err; 533 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 534 int key; 535 struct hostent *hp = 0; 536 537 cmd = argv[0]; 538 if (*cmd != 'g') 539 shutdown(s, 0); /* Don't want to read back our messages */ 540 while (--argc > 0) { 541 if (**(++argv)== '-') { 542 switch (key = keyword(1 + *argv)) { 543 544 case K_SA: 545 af = PF_ROUTE; 546 aflen = sizeof(union sockunion); 547 break; 548 549 case K_INET: 550 af = AF_INET; 551 aflen = sizeof(struct sockaddr_in); 552 break; 553 554 case K_LINK: 555 af = AF_LINK; 556 aflen = sizeof(struct sockaddr_dl); 557 break; 558 559 case K_OSI: 560 case K_ISO: 561 af = AF_ISO; 562 aflen = sizeof(struct sockaddr_iso); 563 break; 564 565 case K_X25: 566 af = AF_CCITT; 567 aflen = sizeof(struct sockaddr_x25); 568 break; 569 570 case K_XNS: 571 af = AF_NS; 572 aflen = sizeof(struct sockaddr_ns); 573 break; 574 575 case K_IFACE: 576 case K_INTERFACE: 577 iflag++; 578 break; 579 case K_NOSTATIC: 580 flags &= ~RTF_STATIC; 581 break; 582 case K_LLINFO: 583 flags |= RTF_LLINFO; 584 break; 585 case K_LOCK: 586 locking = 1; 587 break; 588 case K_LOCKREST: 589 lockrest = 1; 590 break; 591 case K_HOST: 592 forcehost++; 593 break; 594 case K_REJECT: 595 flags |= RTF_REJECT; 596 break; 597 case K_BLACKHOLE: 598 flags |= RTF_BLACKHOLE; 599 break; 600 case K_PROTO1: 601 flags |= RTF_PROTO1; 602 break; 603 case K_PROTO2: 604 flags |= RTF_PROTO2; 605 break; 606 case K_CLONING: 607 flags |= RTF_CLONING; 608 break; 609 case K_XRESOLVE: 610 flags |= RTF_XRESOLVE; 611 break; 612 case K_STATIC: 613 flags |= RTF_STATIC; 614 break; 615 case K_IFA: 616 argc--; 617 (void) getaddr(RTA_IFA, *++argv, 0); 618 break; 619 case K_IFP: 620 argc--; 621 (void) getaddr(RTA_IFP, *++argv, 0); 622 break; 623 case K_GENMASK: 624 argc--; 625 (void) getaddr(RTA_GENMASK, *++argv, 0); 626 break; 627 case K_GATEWAY: 628 argc--; 629 (void) getaddr(RTA_GATEWAY, *++argv, 0); 630 break; 631 case K_DST: 632 argc--; 633 ishost = getaddr(RTA_DST, *++argv, &hp); 634 dest = *argv; 635 break; 636 case K_NETMASK: 637 argc--; 638 (void) getaddr(RTA_NETMASK, *++argv, 0); 639 /* FALLTHROUGH */ 640 case K_NET: 641 forcenet++; 642 break; 643 case K_MTU: 644 case K_HOPCOUNT: 645 case K_EXPIRE: 646 case K_RECVPIPE: 647 case K_SENDPIPE: 648 case K_SSTHRESH: 649 case K_RTT: 650 case K_RTTVAR: 651 argc--; 652 set_metric(*++argv, key); 653 break; 654 default: 655 usage(1+*argv); 656 } 657 } else { 658 if ((rtm_addrs & RTA_DST) == 0) { 659 dest = *argv; 660 ishost = getaddr(RTA_DST, *argv, &hp); 661 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 662 gateway = *argv; 663 (void) getaddr(RTA_GATEWAY, *argv, &hp); 664 } else { 665 int ret = atoi(*argv); 666 667 if (ret == 0) { 668 if (!qflag && strcmp(*argv, "0") == 0) 669 printf("%s,%s", 670 "old usage of trailing 0", 671 "assuming route to if\n"); 672 else 673 usage((char *)NULL); 674 iflag = 1; 675 continue; 676 } else if (ret > 0 && ret < 10) { 677 if (!qflag) { 678 printf("old usage of trailing digit, "); 679 printf("assuming route via gateway\n"); 680 } 681 iflag = 0; 682 continue; 683 } 684 (void) getaddr(RTA_NETMASK, *argv, 0); 685 } 686 } 687 } 688 if (forcehost) 689 ishost = 1; 690 if (forcenet) 691 ishost = 0; 692 flags |= RTF_UP; 693 if (ishost) 694 flags |= RTF_HOST; 695 if (iflag == 0) 696 flags |= RTF_GATEWAY; 697 for (attempts = 1; ; attempts++) { 698 errno = 0; 699 if ((ret = rtmsg(*cmd, flags)) == 0) 700 break; 701 if (errno != ENETUNREACH && errno != ESRCH) 702 break; 703 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 704 hp->h_addr_list++; 705 memcpy(&so_gate.sin.sin_addr, hp->h_addr_list[0], 706 hp->h_length); 707 } else 708 break; 709 } 710 if (*cmd == 'g') 711 exit(0); 712 oerrno = errno; 713 if (!qflag) { 714 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 715 if (*gateway) { 716 (void) printf(": gateway %s", gateway); 717 if (attempts > 1 && ret == 0 && af == AF_INET) 718 (void) printf(" (%s)", 719 inet_ntoa(((struct sockaddr_in *) 720 &route.rt_gateway)->sin_addr)); 721 } 722 if (ret == 0) 723 (void) printf("\n"); 724 } 725 if (ret != 0) { 726 switch (oerrno) { 727 case ESRCH: 728 err = "not in table"; 729 break; 730 case EBUSY: 731 err = "entry in use"; 732 break; 733 case ENOBUFS: 734 err = "routing table overflow"; 735 break; 736 default: 737 err = strerror(oerrno); 738 break; 739 } 740 (void) printf(": %s\n", err); 741 } 742 } 743 744 void 745 inet_makenetandmask(net, sin) 746 u_long net; 747 register struct sockaddr_in *sin; 748 { 749 u_long addr, mask = 0; 750 register char *cp; 751 752 rtm_addrs |= RTA_NETMASK; 753 if (net == 0) 754 mask = addr = 0; 755 else if (net < 128) { 756 addr = net << IN_CLASSA_NSHIFT; 757 mask = IN_CLASSA_NET; 758 } else if (net < 65536) { 759 addr = net << IN_CLASSB_NSHIFT; 760 mask = IN_CLASSB_NET; 761 } else if (net < 16777216L) { 762 addr = net << IN_CLASSC_NSHIFT; 763 mask = IN_CLASSC_NET; 764 } else { 765 addr = net; 766 if ((addr & IN_CLASSA_HOST) == 0) 767 mask = IN_CLASSA_NET; 768 else if ((addr & IN_CLASSB_HOST) == 0) 769 mask = IN_CLASSB_NET; 770 else if ((addr & IN_CLASSC_HOST) == 0) 771 mask = IN_CLASSC_NET; 772 else 773 mask = -1; 774 } 775 sin->sin_addr.s_addr = htonl(addr); 776 sin = &so_mask.sin; 777 sin->sin_addr.s_addr = htonl(mask); 778 sin->sin_len = 0; 779 sin->sin_family = 0; 780 cp = (char *)(&sin->sin_addr + 1); 781 while (*--cp == 0 && cp > (char *)sin) 782 ; 783 sin->sin_len = 1 + cp - (char *)sin; 784 } 785 786 /* 787 * Interpret an argument as a network address of some kind, 788 * returning 1 if a host address, 0 if a network address. 789 */ 790 int 791 getaddr(which, s, hpp) 792 int which; 793 char *s; 794 struct hostent **hpp; 795 { 796 register sup su; 797 struct ns_addr ns_addr(); 798 struct iso_addr *iso_addr(); 799 struct hostent *hp; 800 struct netent *np; 801 u_long val; 802 803 if (af == 0) { 804 af = AF_INET; 805 aflen = sizeof(struct sockaddr_in); 806 } 807 rtm_addrs |= which; 808 switch (which) { 809 case RTA_DST: 810 su = &so_dst; 811 su->sa.sa_family = af; 812 break; 813 case RTA_GATEWAY: 814 su = &so_gate; 815 su->sa.sa_family = af; 816 break; 817 case RTA_NETMASK: 818 su = &so_mask; 819 break; 820 case RTA_GENMASK: 821 su = &so_genmask; 822 break; 823 case RTA_IFP: 824 su = &so_ifp; 825 su->sa.sa_family = af; 826 break; 827 case RTA_IFA: 828 su = &so_ifa; 829 su->sa.sa_family = af; 830 break; 831 default: 832 usage("Internal Error"); 833 /*NOTREACHED*/ 834 } 835 su->sa.sa_len = aflen; 836 if (strcmp(s, "default") == 0) { 837 switch (which) { 838 case RTA_DST: 839 forcenet++; 840 (void) getaddr(RTA_NETMASK, s, 0); 841 break; 842 case RTA_NETMASK: 843 case RTA_GENMASK: 844 su->sa.sa_len = 0; 845 } 846 return (0); 847 } 848 switch (af) { 849 #ifndef SMALL 850 case AF_NS: 851 if (which == RTA_DST) { 852 extern short ns_bh[3]; 853 struct sockaddr_ns *sms = &(so_mask.sns); 854 memset(sms, 0, sizeof(*sms)); 855 sms->sns_family = 0; 856 sms->sns_len = 6; 857 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 858 rtm_addrs |= RTA_NETMASK; 859 } 860 su->sns.sns_addr = ns_addr(s); 861 return (!ns_nullhost(su->sns.sns_addr)); 862 863 case AF_OSI: 864 su->siso.siso_addr = *iso_addr(s); 865 if (which == RTA_NETMASK || which == RTA_GENMASK) { 866 register char *cp = (char *)TSEL(&su->siso); 867 su->siso.siso_nlen = 0; 868 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 869 su->siso.siso_len = 1 + cp - (char *)su; 870 } 871 return (1); 872 873 case AF_CCITT: 874 ccitt_addr(s, &su->sx25); 875 return (which == RTA_DST ? x25_makemask() : 1); 876 #endif /* SMALL */ 877 878 case PF_ROUTE: 879 su->sa.sa_len = sizeof(*su); 880 sockaddr(s, &su->sa); 881 return (1); 882 883 case AF_LINK: 884 link_addr(s, &su->sdl); 885 return (1); 886 887 case AF_INET: 888 default: 889 break; 890 } 891 892 if (hpp == NULL) 893 hpp = &hp; 894 *hpp = NULL; 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 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 907 netdone: 908 if (which == RTA_DST) 909 inet_makenetandmask(val, &su->sin); 910 return (0); 911 } 912 hp = gethostbyname(s); 913 if (hp) { 914 *hpp = hp; 915 su->sin.sin_family = hp->h_addrtype; 916 memcpy(&su->sin.sin_addr, hp->h_addr, hp->h_length); 917 return (1); 918 } 919 (void) fprintf(stderr, "%s: bad value\n", s); 920 exit(1); 921 } 922 923 #ifndef SMALL 924 int 925 x25_makemask() 926 { 927 register char *cp; 928 929 if ((rtm_addrs & RTA_NETMASK) == 0) { 930 rtm_addrs |= RTA_NETMASK; 931 for (cp = (char *)&so_mask.sx25.x25_net; 932 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 933 *cp = -1; 934 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 935 } 936 return 0; 937 } 938 939 short ns_nullh[] = {0,0,0}; 940 short ns_bh[] = {-1,-1,-1}; 941 942 char * 943 ns_print(sns) 944 struct sockaddr_ns *sns; 945 { 946 struct ns_addr work; 947 union { union ns_net net_e; u_long long_e; } net; 948 u_short port; 949 static char mybuf[50], cport[10], chost[25]; 950 char *host = ""; 951 register char *p; 952 register u_char *q; 953 954 work = sns->sns_addr; 955 port = ntohs(work.x_port); 956 work.x_port = 0; 957 net.net_e = work.x_net; 958 if (ns_nullhost(work) && net.long_e == 0) { 959 if (!port) 960 return ("*.*"); 961 (void) sprintf(mybuf, "*.%XH", port); 962 return (mybuf); 963 } 964 965 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 966 host = "any"; 967 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 968 host = "*"; 969 else { 970 q = work.x_host.c_host; 971 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 972 q[0], q[1], q[2], q[3], q[4], q[5]); 973 for (p = chost; *p == '0' && p < chost + 12; p++) 974 /* void */; 975 host = p; 976 } 977 if (port) 978 (void) sprintf(cport, ".%XH", htons(port)); 979 else 980 *cport = 0; 981 982 (void) sprintf(mybuf,"%XH.%s%s", ntohl(net.long_e), host, cport); 983 return (mybuf); 984 } 985 986 void 987 interfaces() 988 { 989 size_t needed; 990 int mib[6]; 991 char *buf, *lim, *next; 992 register struct rt_msghdr *rtm; 993 994 mib[0] = CTL_NET; 995 mib[1] = PF_ROUTE; 996 mib[2] = 0; /* protocol */ 997 mib[3] = 0; /* wildcard address family */ 998 mib[4] = NET_RT_IFLIST; 999 mib[5] = 0; /* no flags */ 1000 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1001 quit("route-sysctl-estimate"); 1002 if ((buf = malloc(needed)) == NULL) 1003 quit("malloc"); 1004 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1005 quit("actual retrieval of interface table"); 1006 lim = buf + needed; 1007 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1008 rtm = (struct rt_msghdr *)next; 1009 print_rtmsg(rtm, rtm->rtm_msglen); 1010 } 1011 } 1012 1013 void 1014 monitor() 1015 { 1016 int n; 1017 char msg[2048]; 1018 1019 verbose = 1; 1020 if (debugonly) { 1021 interfaces(); 1022 exit(0); 1023 } 1024 for(;;) { 1025 n = read(s, msg, 2048); 1026 (void) printf("got message of size %d\n", n); 1027 print_rtmsg((struct rt_msghdr *)msg, n); 1028 } 1029 } 1030 1031 #endif /* SMALL */ 1032 1033 1034 struct { 1035 struct rt_msghdr m_rtm; 1036 char m_space[512]; 1037 } m_rtmsg; 1038 1039 int 1040 rtmsg(cmd, flags) 1041 int cmd, flags; 1042 { 1043 static int seq; 1044 int rlen; 1045 register char *cp = m_rtmsg.m_space; 1046 register int l; 1047 1048 #define NEXTADDR(w, u) \ 1049 if (rtm_addrs & (w)) {\ 1050 l = ROUNDUP(u.sa.sa_len); memcpy(cp, &(u), l); cp += l;\ 1051 if (verbose) sodump(&(u),"u");\ 1052 } 1053 1054 errno = 0; 1055 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1056 if (cmd == 'a') 1057 cmd = RTM_ADD; 1058 else if (cmd == 'c') 1059 cmd = RTM_CHANGE; 1060 else if (cmd == 'g') { 1061 #ifdef SMALL 1062 return (-1); 1063 #else /* SMALL */ 1064 cmd = RTM_GET; 1065 if (so_ifp.sa.sa_family == 0) { 1066 so_ifp.sa.sa_family = AF_LINK; 1067 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1068 rtm_addrs |= RTA_IFP; 1069 } 1070 #endif /* SMALL */ 1071 } else 1072 cmd = RTM_DELETE; 1073 #define rtm m_rtmsg.m_rtm 1074 rtm.rtm_type = cmd; 1075 rtm.rtm_flags = flags; 1076 rtm.rtm_version = RTM_VERSION; 1077 rtm.rtm_seq = ++seq; 1078 rtm.rtm_addrs = rtm_addrs; 1079 rtm.rtm_rmx = rt_metrics; 1080 rtm.rtm_inits = rtm_inits; 1081 1082 if (rtm_addrs & RTA_NETMASK) 1083 mask_addr(); 1084 NEXTADDR(RTA_DST, so_dst); 1085 NEXTADDR(RTA_GATEWAY, so_gate); 1086 NEXTADDR(RTA_NETMASK, so_mask); 1087 NEXTADDR(RTA_GENMASK, so_genmask); 1088 NEXTADDR(RTA_IFP, so_ifp); 1089 NEXTADDR(RTA_IFA, so_ifa); 1090 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1091 if (verbose) 1092 print_rtmsg(&rtm, l); 1093 if (debugonly) 1094 return (0); 1095 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1096 perror("writing to routing socket"); 1097 return (-1); 1098 } 1099 #ifndef SMALL 1100 if (cmd == RTM_GET) { 1101 do { 1102 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1103 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1104 if (l < 0) 1105 (void) fprintf(stderr, 1106 "route: read from routing socket: %s\n", 1107 strerror(errno)); 1108 else 1109 print_getmsg(&rtm, l); 1110 } 1111 #endif /* SMALL */ 1112 #undef rtm 1113 return (0); 1114 } 1115 1116 void 1117 mask_addr() 1118 { 1119 int olen = so_mask.sa.sa_len; 1120 register char *cp1 = olen + (char *)&so_mask, *cp2; 1121 1122 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1123 if (*--cp1 != 0) { 1124 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1125 break; 1126 } 1127 if ((rtm_addrs & RTA_DST) == 0) 1128 return; 1129 switch (so_dst.sa.sa_family) { 1130 case AF_NS: 1131 case AF_INET: 1132 case AF_CCITT: 1133 case 0: 1134 return; 1135 case AF_ISO: 1136 olen = MIN(so_dst.siso.siso_nlen, 1137 MAX(so_mask.sa.sa_len - 6, 0)); 1138 break; 1139 } 1140 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1141 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1142 while (cp2 > cp1) 1143 *--cp2 = 0; 1144 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1145 while (cp1 > so_dst.sa.sa_data) 1146 *--cp1 &= *--cp2; 1147 switch (so_dst.sa.sa_family) { 1148 case AF_ISO: 1149 so_dst.siso.siso_nlen = olen; 1150 break; 1151 } 1152 } 1153 1154 char *msgtypes[] = { 1155 "", 1156 "RTM_ADD: Add Route", 1157 "RTM_DELETE: Delete Route", 1158 "RTM_CHANGE: Change Metrics or flags", 1159 "RTM_GET: Report Metrics", 1160 "RTM_LOSING: Kernel Suspects Partitioning", 1161 "RTM_REDIRECT: Told to use different route", 1162 "RTM_MISS: Lookup failed on this address", 1163 "RTM_LOCK: fix specified metrics", 1164 "RTM_OLDADD: caused by SIOCADDRT", 1165 "RTM_OLDDEL: caused by SIOCDELRT", 1166 "RTM_RESOLVE: Route created by cloning", 1167 "RTM_NEWADDR: address being added to iface", 1168 "RTM_DELADDR: address being removed from iface", 1169 "RTM_IFINFO: iface status change", 1170 0, 1171 }; 1172 1173 char metricnames[] = 1174 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1175 char routeflags[] = 1176 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\017PROTO2\020PROTO1"; 1177 char ifnetflags[] = 1178 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1179 char addrnames[] = 1180 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1181 1182 void 1183 print_rtmsg(rtm, msglen) 1184 register struct rt_msghdr *rtm; 1185 int msglen; 1186 { 1187 struct if_msghdr *ifm; 1188 struct ifa_msghdr *ifam; 1189 1190 if (verbose == 0) 1191 return; 1192 if (rtm->rtm_version != RTM_VERSION) { 1193 (void) printf("routing message version %d not understood\n", 1194 rtm->rtm_version); 1195 return; 1196 } 1197 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1198 switch (rtm->rtm_type) { 1199 case RTM_IFINFO: 1200 ifm = (struct if_msghdr *)rtm; 1201 (void) printf("if# %d, flags:", ifm->ifm_index); 1202 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1203 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1204 break; 1205 case RTM_NEWADDR: 1206 case RTM_DELADDR: 1207 ifam = (struct ifa_msghdr *)rtm; 1208 (void) printf("metric %d, flags:", ifam->ifam_metric); 1209 bprintf(stdout, ifam->ifam_flags, routeflags); 1210 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1211 break; 1212 default: 1213 (void) printf("pid: %d, seq %d, errno %d, flags:", 1214 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1215 bprintf(stdout, rtm->rtm_flags, routeflags); 1216 pmsg_common(rtm); 1217 } 1218 } 1219 1220 #ifndef SMALL 1221 void 1222 print_getmsg(rtm, msglen) 1223 register struct rt_msghdr *rtm; 1224 int msglen; 1225 { 1226 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1227 struct sockaddr_dl *ifp = NULL; 1228 register struct sockaddr *sa; 1229 register char *cp; 1230 register int i; 1231 1232 (void) printf(" route to: %s\n", routename(&so_dst)); 1233 if (rtm->rtm_version != RTM_VERSION) { 1234 (void)fprintf(stderr, 1235 "routing message version %d not understood\n", 1236 rtm->rtm_version); 1237 return; 1238 } 1239 if (rtm->rtm_msglen > msglen) { 1240 (void)fprintf(stderr, 1241 "message length mismatch, in packet %d, returned %d\n", 1242 rtm->rtm_msglen, msglen); 1243 } 1244 if (rtm->rtm_errno) { 1245 (void) fprintf(stderr, "RTM_GET: %s (errno %d)\n", 1246 strerror(rtm->rtm_errno), rtm->rtm_errno); 1247 return; 1248 } 1249 cp = ((char *)(rtm + 1)); 1250 if (rtm->rtm_addrs) 1251 for (i = 1; i; i <<= 1) 1252 if (i & rtm->rtm_addrs) { 1253 sa = (struct sockaddr *)cp; 1254 switch (i) { 1255 case RTA_DST: 1256 dst = sa; 1257 break; 1258 case RTA_GATEWAY: 1259 gate = sa; 1260 break; 1261 case RTA_NETMASK: 1262 mask = sa; 1263 break; 1264 case RTA_IFP: 1265 if (sa->sa_family == AF_LINK && 1266 ((struct sockaddr_dl *)sa)->sdl_nlen) 1267 ifp = (struct sockaddr_dl *)sa; 1268 break; 1269 } 1270 ADVANCE(cp, sa); 1271 } 1272 if (dst && mask) 1273 mask->sa_family = dst->sa_family; /* XXX */ 1274 if (dst) 1275 (void)printf("destination: %s\n", routename(dst)); 1276 if (mask) { 1277 int savenflag = nflag; 1278 1279 nflag = 1; 1280 (void)printf(" mask: %s\n", routename(mask)); 1281 nflag = savenflag; 1282 } 1283 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1284 (void)printf(" gateway: %s\n", routename(gate)); 1285 if (ifp) 1286 (void)printf(" interface: %.*s\n", 1287 ifp->sdl_nlen, ifp->sdl_data); 1288 (void)printf(" flags: "); 1289 bprintf(stdout, rtm->rtm_flags, routeflags); 1290 1291 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1292 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1293 1294 (void) printf("\n%s\n", "\ 1295 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1296 printf("%8d%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1297 printf("%8d%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1298 printf("%8d%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1299 printf("%8d%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1300 printf("%8d%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1301 printf("%8d%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1302 printf("%8d%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1303 if (rtm->rtm_rmx.rmx_expire) 1304 rtm->rtm_rmx.rmx_expire -= time(0); 1305 printf("%8d%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1306 #undef lock 1307 #undef msec 1308 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1309 if (verbose) 1310 pmsg_common(rtm); 1311 else if (rtm->rtm_addrs &~ RTA_IGN) { 1312 (void) printf("sockaddrs: "); 1313 bprintf(stdout, rtm->rtm_addrs, addrnames); 1314 putchar('\n'); 1315 } 1316 #undef RTA_IGN 1317 } 1318 #endif /* SMALL */ 1319 1320 void 1321 pmsg_common(rtm) 1322 register struct rt_msghdr *rtm; 1323 { 1324 (void) printf("\nlocks: "); 1325 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1326 (void) printf(" inits: "); 1327 bprintf(stdout, rtm->rtm_inits, metricnames); 1328 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1329 } 1330 1331 void 1332 pmsg_addrs(cp, addrs) 1333 char *cp; 1334 int addrs; 1335 { 1336 register struct sockaddr *sa; 1337 int i; 1338 1339 if (addrs == 0) 1340 return; 1341 (void) printf("\nsockaddrs: "); 1342 bprintf(stdout, addrs, addrnames); 1343 (void) putchar('\n'); 1344 for (i = 1; i; i <<= 1) 1345 if (i & addrs) { 1346 sa = (struct sockaddr *)cp; 1347 (void) printf(" %s", routename(sa)); 1348 ADVANCE(cp, sa); 1349 } 1350 (void) putchar('\n'); 1351 (void) fflush(stdout); 1352 } 1353 1354 void 1355 bprintf(fp, b, s) 1356 register FILE *fp; 1357 register int b; 1358 register u_char *s; 1359 { 1360 register int i; 1361 int gotsome = 0; 1362 1363 if (b == 0) 1364 return; 1365 while (i = *s++) { 1366 if (b & (1 << (i-1))) { 1367 if (gotsome == 0) 1368 i = '<'; 1369 else 1370 i = ','; 1371 (void) putc(i, fp); 1372 gotsome = 1; 1373 for (; (i = *s) > 32; s++) 1374 (void) putc(i, fp); 1375 } else 1376 while (*s > 32) 1377 s++; 1378 } 1379 if (gotsome) 1380 (void) putc('>', fp); 1381 } 1382 1383 int 1384 keyword(cp) 1385 char *cp; 1386 { 1387 register struct keytab *kt = keywords; 1388 1389 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1390 kt++; 1391 return kt->kt_i; 1392 } 1393 1394 void 1395 sodump(su, which) 1396 register sup su; 1397 char *which; 1398 { 1399 switch (su->sa.sa_family) { 1400 case AF_INET: 1401 (void) printf("%s: inet %s; ", 1402 which, inet_ntoa(su->sin.sin_addr)); 1403 break; 1404 case AF_LINK: 1405 (void) printf("%s: link %s; ", 1406 which, link_ntoa(&su->sdl)); 1407 break; 1408 #ifndef SMALL 1409 case AF_ISO: 1410 (void) printf("%s: iso %s; ", 1411 which, iso_ntoa(&su->siso.siso_addr)); 1412 break; 1413 case AF_NS: 1414 (void) printf("%s: xns %s; ", 1415 which, ns_ntoa(su->sns.sns_addr)); 1416 break; 1417 #endif /* SMALL */ 1418 default: 1419 (void) printf("af %d: %s; ", 1420 which, any_ntoa(&su->sa)); 1421 } 1422 (void) fflush(stdout); 1423 } 1424 1425 /* States*/ 1426 #define VIRGIN 0 1427 #define GOTONE 1 1428 #define GOTTWO 2 1429 /* Inputs */ 1430 #define DIGIT (4*0) 1431 #define END (4*1) 1432 #define DELIM (4*2) 1433 1434 void 1435 sockaddr(addr, sa) 1436 register char *addr; 1437 register struct sockaddr *sa; 1438 { 1439 register char *cp = (char *)sa; 1440 int size = sa->sa_len; 1441 char *cplim = cp + size; 1442 register int byte = 0, state = VIRGIN, new; 1443 1444 memset(cp, 0, size); 1445 cp++; 1446 do { 1447 if ((*addr >= '0') && (*addr <= '9')) { 1448 new = *addr - '0'; 1449 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1450 new = *addr - 'a' + 10; 1451 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1452 new = *addr - 'A' + 10; 1453 } else if (*addr == 0) 1454 state |= END; 1455 else 1456 state |= DELIM; 1457 addr++; 1458 switch (state /* | INPUT */) { 1459 case GOTTWO | DIGIT: 1460 *cp++ = byte; /*FALLTHROUGH*/ 1461 case VIRGIN | DIGIT: 1462 state = GOTONE; byte = new; continue; 1463 case GOTONE | DIGIT: 1464 state = GOTTWO; byte = new + (byte << 4); continue; 1465 default: /* | DELIM */ 1466 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1467 case GOTONE | END: 1468 case GOTTWO | END: 1469 *cp++ = byte; /* FALLTHROUGH */ 1470 case VIRGIN | END: 1471 break; 1472 } 1473 break; 1474 } while (cp < cplim); 1475 sa->sa_len = cp - (char *)sa; 1476 } 1477
Indexes created Fri Sep 26 20:09:58 GMT 2025