route.c revision 1.28
1 /* $NetBSD: route.c,v 1.28 1998/04/01 15:14:25 kleink 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 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) 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 8.6 (Berkeley) 4/28/95"; 45 #else 46 __RCSID("$NetBSD: route.c,v 1.28 1998/04/01 15:14:25 kleink 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 <netatalk/at.h> 62 #include <netns/ns.h> 63 #include <netiso/iso.h> 64 #include <netccitt/x25.h> 65 #include <arpa/inet.h> 66 #include <netdb.h> 67 68 #include <errno.h> 69 #include <unistd.h> 70 #include <stdio.h> 71 #include <ctype.h> 72 #include <stdlib.h> 73 #include <string.h> 74 #include <time.h> 75 #include <paths.h> 76 #include <err.h> 77 78 #include "keywords.h" 79 #include "extern.h" 80 81 typedef union sockunion *sup; 82 83 int main __P((int, char **)); 84 static void usage __P((char *)); 85 static char *any_ntoa __P((const struct sockaddr *)); 86 static void set_metric __P((char *, int)); 87 static void newroute __P((int, char **)); 88 static void inet_makenetandmask __P((u_int32_t, struct sockaddr_in *)); 89 static int getaddr __P((int, char *, struct hostent **)); 90 #ifndef SMALL 91 static void flushroutes __P((int, char *[])); 92 static int x25_makemask __P((void)); 93 static void interfaces __P((void)); 94 static void monitor __P((void)); 95 static void print_getmsg __P((struct rt_msghdr *, int)); 96 #endif 97 static int rtmsg __P((int, int )); 98 static void mask_addr __P((void)); 99 static void print_rtmsg __P((struct rt_msghdr *, int)); 100 static void pmsg_common __P((struct rt_msghdr *)); 101 static void pmsg_addrs __P((char *, int)); 102 static void bprintf __P((FILE *, int, u_char *)); 103 static int keyword __P((char *)); 104 static void sodump __P((sup, char *)); 105 static void sockaddr __P((char *, struct sockaddr *)); 106 107 struct ortentry route; 108 union sockunion { 109 struct sockaddr sa; 110 struct sockaddr_in sin; 111 struct sockaddr_at sat; 112 struct sockaddr_ns sns; 113 struct sockaddr_iso siso; 114 struct sockaddr_dl sdl; 115 struct sockaddr_x25 sx25; 116 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 117 118 int pid, rtm_addrs; 119 int s; 120 int forcehost, forcenet, doflush, nflag, af, qflag, tflag; 121 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 122 int locking, lockrest, debugonly; 123 struct rt_metrics rt_metrics; 124 u_int32_t rtm_inits; 125 126 static void 127 usage(cp) 128 char *cp; 129 { 130 extern char *__progname; 131 if (cp) 132 warnx("botched keyword: %s", cp); 133 (void) fprintf(stderr, 134 "Usage: %s [ -nqv ] cmd [[ -<qualifers> ] args ]\n", __progname); 135 exit(1); 136 /* NOTREACHED */ 137 } 138 139 #define ROUNDUP(a) \ 140 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(int32_t) - 1))) : sizeof(int32_t)) 141 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 142 143 int 144 main(argc, argv) 145 int argc; 146 char **argv; 147 { 148 int ch; 149 150 if (argc < 2) 151 usage(NULL); 152 153 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 154 switch(ch) { 155 case 'n': 156 nflag = 1; 157 break; 158 case 'q': 159 qflag = 1; 160 break; 161 case 'v': 162 verbose = 1; 163 break; 164 case 't': 165 tflag = 1; 166 break; 167 case 'd': 168 debugonly = 1; 169 break; 170 case '?': 171 default: 172 usage(NULL); 173 } 174 argc -= optind; 175 argv += optind; 176 177 pid = getpid(); 178 if (tflag) 179 s = open("/dev/null", O_WRONLY, 0); 180 else 181 s = socket(PF_ROUTE, SOCK_RAW, 0); 182 if (s < 0) 183 err(1, "socket"); 184 185 if (*argv == NULL) 186 goto no_cmd; 187 switch (keyword(*argv)) { 188 189 #ifndef SMALL 190 case K_GET: 191 #endif /* SMALL */ 192 case K_CHANGE: 193 case K_ADD: 194 case K_DELETE: 195 newroute(argc, argv); 196 break; 197 198 case K_SHOW: 199 show(argc, argv); 200 break; 201 202 #ifndef SMALL 203 case K_MONITOR: 204 monitor(); 205 break; 206 207 case K_FLUSH: 208 flushroutes(argc, argv); 209 break; 210 #endif /* SMALL */ 211 212 no_cmd: 213 default: 214 usage(*argv); 215 return 1; 216 } 217 return 0; 218 } 219 220 #ifndef SMALL 221 /* 222 * Purge all entries in the routing tables not 223 * associated with network interfaces. 224 */ 225 static void 226 flushroutes(argc, argv) 227 int argc; 228 char *argv[]; 229 { 230 size_t needed; 231 int mib[6], rlen, seqno; 232 char *buf, *next, *lim; 233 struct rt_msghdr *rtm; 234 235 shutdown(s, 0); /* Don't want to read back our messages */ 236 if (argc > 1) { 237 argv++; 238 if (argc == 2 && **argv == '-') 239 switch (keyword(*argv + 1)) { 240 case K_INET: 241 af = AF_INET; 242 break; 243 case K_ATALK: 244 af = AF_APPLETALK; 245 break; 246 case K_XNS: 247 af = AF_NS; 248 break; 249 case K_LINK: 250 af = AF_LINK; 251 break; 252 case K_ISO: 253 case K_OSI: 254 af = AF_ISO; 255 break; 256 case K_X25: 257 af = AF_CCITT; 258 default: 259 goto bad; 260 } else 261 bad: usage(*argv); 262 } 263 mib[0] = CTL_NET; 264 mib[1] = PF_ROUTE; 265 mib[2] = 0; /* protocol */ 266 mib[3] = 0; /* wildcard address family */ 267 mib[4] = NET_RT_DUMP; 268 mib[5] = 0; /* no flags */ 269 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 270 err(1, "route-sysctl-estimate"); 271 if (needed == 0) 272 return; 273 if ((buf = malloc(needed)) == NULL) 274 err(1, "malloc"); 275 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 276 err(1, "actual retrieval of routing table"); 277 lim = buf + needed; 278 if (verbose) { 279 (void) printf("Examining routing table from sysctl\n"); 280 if (af) printf("(address family %s)\n", (*argv + 1)); 281 } 282 seqno = 0; /* ??? */ 283 for (next = buf; next < lim; next += rtm->rtm_msglen) { 284 rtm = (struct rt_msghdr *)next; 285 if (verbose) 286 print_rtmsg(rtm, rtm->rtm_msglen); 287 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 288 continue; 289 if (af) { 290 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 291 292 if (sa->sa_family != af) 293 continue; 294 } 295 if (debugonly) 296 continue; 297 rtm->rtm_type = RTM_DELETE; 298 rtm->rtm_seq = seqno; 299 rlen = write(s, next, rtm->rtm_msglen); 300 if (rlen < (int)rtm->rtm_msglen) { 301 warn("write to routing socket, got %d for rlen", rlen); 302 break; 303 } 304 seqno++; 305 if (qflag) 306 continue; 307 if (verbose) 308 print_rtmsg(rtm, rlen); 309 else { 310 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 311 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 312 routename(sa) : netname(sa)); 313 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 314 (void) printf("%-20.20s ", routename(sa)); 315 (void) printf("done\n"); 316 } 317 } 318 } 319 #endif /* SMALL */ 320 321 322 static char hexlist[] = "0123456789abcdef"; 323 324 static char * 325 any_ntoa(sa) 326 const struct sockaddr *sa; 327 { 328 static char obuf[64]; 329 const char *in; 330 char *out; 331 int len; 332 333 len = sa->sa_len; 334 in = sa->sa_data; 335 out = obuf; 336 337 do { 338 *out++ = hexlist[(*in >> 4) & 15]; 339 *out++ = hexlist[(*in++) & 15]; 340 *out++ = '.'; 341 } while (--len > 0); 342 out[-1] = '\0'; 343 return obuf; 344 } 345 346 347 char * 348 routename(sa) 349 struct sockaddr *sa; 350 { 351 char *cp; 352 static char line[50]; 353 struct hostent *hp; 354 static char domain[MAXHOSTNAMELEN + 1]; 355 static int first = 1; 356 struct in_addr in; 357 358 if (first) { 359 first = 0; 360 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 361 (cp = strchr(domain, '.'))) { 362 (void)strncpy(domain, cp + 1, sizeof(domain) - 1); 363 domain[sizeof(domain) - 1] = '\0'; 364 } else 365 domain[0] = 0; 366 } 367 368 if (sa->sa_len == 0) { 369 strncpy(line, "default", sizeof(line) - 1); 370 line[sizeof(line) - 1] = '\0'; 371 } else switch (sa->sa_family) { 372 373 case AF_INET: 374 in = ((struct sockaddr_in *)sa)->sin_addr; 375 376 cp = 0; 377 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 378 cp = "default"; 379 if (cp == 0 && !nflag) { 380 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 381 AF_INET); 382 if (hp) { 383 if ((cp = strchr(hp->h_name, '.')) && 384 !strcmp(cp + 1, domain)) 385 *cp = 0; 386 cp = hp->h_name; 387 } 388 } 389 if (cp) 390 (void)strncpy(line, cp, sizeof(line) - 1); 391 else 392 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 393 line[sizeof(line) - 1] = '\0'; 394 break; 395 396 case AF_LINK: 397 return (link_ntoa((struct sockaddr_dl *)sa)); 398 399 #ifndef SMALL 400 case AF_NS: 401 return (ns_print((struct sockaddr_ns *)sa)); 402 403 case AF_ISO: 404 (void)snprintf(line, sizeof line, "iso %s", 405 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 406 break; 407 408 case AF_APPLETALK: 409 (void) snprintf(line, sizeof(line), "atalk %d.%d", 410 ((struct sockaddr_at *)sa)->sat_addr.s_net, 411 ((struct sockaddr_at *)sa)->sat_addr.s_node); 412 break; 413 #endif /* SMALL */ 414 415 default: 416 (void)snprintf(line, sizeof line, "(%d) %s", 417 sa->sa_family, any_ntoa(sa)); 418 break; 419 420 } 421 return (line); 422 } 423 424 /* 425 * Return the name of the network whose address is given. 426 * The address is assumed to be that of a net or subnet, not a host. 427 */ 428 char * 429 netname(sa) 430 struct sockaddr *sa; 431 { 432 char *cp = 0; 433 static char line[50]; 434 struct netent *np = 0; 435 u_int32_t net, mask; 436 u_int32_t i; 437 int subnetshift; 438 struct in_addr in; 439 440 switch (sa->sa_family) { 441 442 case AF_INET: 443 in = ((struct sockaddr_in *)sa)->sin_addr; 444 i = ntohl(in.s_addr); 445 if (i == 0) 446 cp = "default"; 447 else if (!nflag) { 448 if (IN_CLASSA(i)) { 449 mask = IN_CLASSA_NET; 450 subnetshift = 8; 451 } else if (IN_CLASSB(i)) { 452 mask = IN_CLASSB_NET; 453 subnetshift = 8; 454 } else { 455 mask = IN_CLASSC_NET; 456 subnetshift = 4; 457 } 458 /* 459 * If there are more bits than the standard mask 460 * would suggest, subnets must be in use. 461 * Guess at the subnet mask, assuming reasonable 462 * width subnet fields. 463 */ 464 while (i &~ mask) 465 mask = (int32_t)mask >> subnetshift; 466 net = i & mask; 467 while ((mask & 1) == 0) 468 mask >>= 1, net >>= 1; 469 np = getnetbyaddr(net, AF_INET); 470 if (np) 471 cp = np->n_name; 472 } 473 if (cp) { 474 (void)strncpy(line, cp, sizeof(line) - 1); 475 line[sizeof(line) - 1] = '\0'; 476 } else { 477 #if 0 /* XXX - This is silly... */ 478 #define C(x) ((x) & 0xff) 479 if ((i & 0xffffff) == 0) 480 (void)snprintf(line, sizeof line, "%u", 481 C(i >> 24)); 482 else if ((i & 0xffff) == 0) 483 (void)snprintf(line, sizeof line, "%u.%u", 484 C(i >> 24), C(i >> 16)); 485 else if ((i & 0xff) == 0) 486 (void)snprintf(line, sizeof line, "%u.%u.%u", 487 C(i >> 24), C(i >> 16), C(i >> 8)); 488 else 489 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 490 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 491 #undef C 492 #else /* XXX */ 493 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 494 #endif /* XXX */ 495 } 496 break; 497 498 case AF_LINK: 499 return (link_ntoa((struct sockaddr_dl *)sa)); 500 501 #ifndef SMALL 502 case AF_NS: 503 return (ns_print((struct sockaddr_ns *)sa)); 504 505 case AF_ISO: 506 (void)snprintf(line, sizeof line, "iso %s", 507 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 508 break; 509 510 case AF_APPLETALK: 511 (void) snprintf(line, sizeof(line), "atalk %d.%d", 512 ((struct sockaddr_at *)sa)->sat_addr.s_net, 513 ((struct sockaddr_at *)sa)->sat_addr.s_node); 514 break; 515 #endif /* SMALL */ 516 517 default: 518 (void)snprintf(line, sizeof line, "af %d: %s", 519 sa->sa_family, any_ntoa(sa)); 520 break; 521 } 522 return (line); 523 } 524 525 static void 526 set_metric(value, key) 527 char *value; 528 int key; 529 { 530 int flag = 0; 531 u_long noval, *valp = &noval; 532 533 switch (key) { 534 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 535 caseof(K_MTU, RTV_MTU, rmx_mtu); 536 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 537 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 538 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 539 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 540 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 541 caseof(K_RTT, RTV_RTT, rmx_rtt); 542 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 543 } 544 rtm_inits |= flag; 545 if (lockrest || locking) 546 rt_metrics.rmx_locks |= flag; 547 if (locking) 548 locking = 0; 549 *valp = atoi(value); 550 } 551 552 static void 553 newroute(argc, argv) 554 int argc; 555 char **argv; 556 { 557 char *cmd, *dest = "", *gateway = "", *err; 558 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 559 int key; 560 struct hostent *hp = 0; 561 562 cmd = argv[0]; 563 if (*cmd != 'g') 564 shutdown(s, 0); /* Don't want to read back our messages */ 565 while (--argc > 0) { 566 if (**(++argv)== '-') { 567 switch (key = keyword(1 + *argv)) { 568 569 case K_SA: 570 af = PF_ROUTE; 571 aflen = sizeof(union sockunion); 572 break; 573 574 case K_ATALK: 575 af = AF_APPLETALK; 576 aflen = sizeof(struct sockaddr_at); 577 break; 578 579 case K_INET: 580 af = AF_INET; 581 aflen = sizeof(struct sockaddr_in); 582 break; 583 584 case K_LINK: 585 af = AF_LINK; 586 aflen = sizeof(struct sockaddr_dl); 587 break; 588 589 case K_OSI: 590 case K_ISO: 591 af = AF_ISO; 592 aflen = sizeof(struct sockaddr_iso); 593 break; 594 595 case K_X25: 596 af = AF_CCITT; 597 aflen = sizeof(struct sockaddr_x25); 598 break; 599 600 case K_XNS: 601 af = AF_NS; 602 aflen = sizeof(struct sockaddr_ns); 603 break; 604 605 case K_IFACE: 606 case K_INTERFACE: 607 iflag++; 608 break; 609 case K_NOSTATIC: 610 flags &= ~RTF_STATIC; 611 break; 612 case K_LLINFO: 613 flags |= RTF_LLINFO; 614 break; 615 case K_LOCK: 616 locking = 1; 617 break; 618 case K_LOCKREST: 619 lockrest = 1; 620 break; 621 case K_HOST: 622 forcehost++; 623 break; 624 case K_REJECT: 625 flags |= RTF_REJECT; 626 break; 627 case K_BLACKHOLE: 628 flags |= RTF_BLACKHOLE; 629 break; 630 case K_PROTO1: 631 flags |= RTF_PROTO1; 632 break; 633 case K_PROTO2: 634 flags |= RTF_PROTO2; 635 break; 636 case K_CLONING: 637 flags |= RTF_CLONING; 638 break; 639 case K_XRESOLVE: 640 flags |= RTF_XRESOLVE; 641 break; 642 case K_STATIC: 643 flags |= RTF_STATIC; 644 break; 645 case K_IFA: 646 if (!--argc) 647 usage(1+*argv); 648 (void) getaddr(RTA_IFA, *++argv, 0); 649 break; 650 case K_IFP: 651 if (!--argc) 652 usage(1+*argv); 653 (void) getaddr(RTA_IFP, *++argv, 0); 654 break; 655 case K_GENMASK: 656 if (!--argc) 657 usage(1+*argv); 658 (void) getaddr(RTA_GENMASK, *++argv, 0); 659 break; 660 case K_GATEWAY: 661 if (!--argc) 662 usage(1+*argv); 663 (void) getaddr(RTA_GATEWAY, *++argv, 0); 664 break; 665 case K_DST: 666 if (!--argc) 667 usage(1+*argv); 668 ishost = getaddr(RTA_DST, *++argv, &hp); 669 dest = *argv; 670 break; 671 case K_NETMASK: 672 if (!--argc) 673 usage(1+*argv); 674 (void) getaddr(RTA_NETMASK, *++argv, 0); 675 /* FALLTHROUGH */ 676 case K_NET: 677 forcenet++; 678 break; 679 case K_MTU: 680 case K_HOPCOUNT: 681 case K_EXPIRE: 682 case K_RECVPIPE: 683 case K_SENDPIPE: 684 case K_SSTHRESH: 685 case K_RTT: 686 case K_RTTVAR: 687 if (!--argc) 688 usage(1+*argv); 689 set_metric(*++argv, key); 690 break; 691 default: 692 usage(1+*argv); 693 } 694 } else { 695 if ((rtm_addrs & RTA_DST) == 0) { 696 dest = *argv; 697 ishost = getaddr(RTA_DST, *argv, &hp); 698 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 699 gateway = *argv; 700 (void) getaddr(RTA_GATEWAY, *argv, &hp); 701 } else { 702 int ret = atoi(*argv); 703 704 if (ret == 0) { 705 if (!qflag && strcmp(*argv, "0") == 0) 706 warnx("%s, %s", 707 "old usage of trailing 0", 708 "assuming route to if"); 709 else 710 usage((char *)NULL); 711 iflag = 1; 712 continue; 713 } else if (ret > 0 && ret < 10) { 714 if (!qflag) { 715 warnx("%s, %s", 716 "old usage of trailing digit", 717 "assuming route via gateway"); 718 } 719 iflag = 0; 720 continue; 721 } 722 (void) getaddr(RTA_NETMASK, *argv, 0); 723 } 724 } 725 } 726 if (forcehost) 727 ishost = 1; 728 if (forcenet) 729 ishost = 0; 730 flags |= RTF_UP; 731 if (ishost) 732 flags |= RTF_HOST; 733 if (iflag == 0) 734 flags |= RTF_GATEWAY; 735 for (attempts = 1; ; attempts++) { 736 errno = 0; 737 if ((ret = rtmsg(*cmd, flags)) == 0) 738 break; 739 if (errno != ENETUNREACH && errno != ESRCH) 740 break; 741 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 742 hp->h_addr_list++; 743 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 744 hp->h_length); 745 } else 746 break; 747 } 748 if (*cmd == 'g') 749 exit(0); 750 oerrno = errno; 751 if (!qflag) { 752 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 753 if (*gateway) { 754 (void) printf(": gateway %s", gateway); 755 if (attempts > 1 && ret == 0 && af == AF_INET) 756 (void) printf(" (%s)", 757 inet_ntoa(((struct sockaddr_in *) 758 &route.rt_gateway)->sin_addr)); 759 } 760 if (ret == 0) 761 (void) printf("\n"); 762 } 763 if (ret != 0) { 764 switch (oerrno) { 765 case ESRCH: 766 err = "not in table"; 767 break; 768 case EBUSY: 769 err = "entry in use"; 770 break; 771 case ENOBUFS: 772 err = "routing table overflow"; 773 break; 774 default: 775 err = strerror(oerrno); 776 break; 777 } 778 (void) printf(": %s\n", err); 779 } 780 } 781 782 static void 783 inet_makenetandmask(net, sin) 784 u_int32_t net; 785 struct sockaddr_in *sin; 786 { 787 u_int32_t addr, mask = 0; 788 char *cp; 789 790 rtm_addrs |= RTA_NETMASK; 791 if (net == 0) 792 mask = addr = 0; 793 else if (net < 128) { 794 addr = net << IN_CLASSA_NSHIFT; 795 mask = IN_CLASSA_NET; 796 } else if (net < 65536) { 797 addr = net << IN_CLASSB_NSHIFT; 798 mask = IN_CLASSB_NET; 799 } else if (net < 16777216L) { 800 addr = net << IN_CLASSC_NSHIFT; 801 mask = IN_CLASSC_NET; 802 } else { 803 addr = net; 804 if ((addr & IN_CLASSA_HOST) == 0) 805 mask = IN_CLASSA_NET; 806 else if ((addr & IN_CLASSB_HOST) == 0) 807 mask = IN_CLASSB_NET; 808 else if ((addr & IN_CLASSC_HOST) == 0) 809 mask = IN_CLASSC_NET; 810 else 811 mask = -1; 812 } 813 sin->sin_addr.s_addr = htonl(addr); 814 sin = &so_mask.sin; 815 sin->sin_addr.s_addr = htonl(mask); 816 sin->sin_len = 0; 817 sin->sin_family = 0; 818 cp = (char *)(&sin->sin_addr + 1); 819 while (*--cp == 0 && cp > (char *)sin) 820 ; 821 sin->sin_len = 1 + cp - (char *)sin; 822 } 823 824 /* 825 * Interpret an argument as a network address of some kind, 826 * returning 1 if a host address, 0 if a network address. 827 */ 828 static int 829 getaddr(which, s, hpp) 830 int which; 831 char *s; 832 struct hostent **hpp; 833 { 834 sup su; 835 struct hostent *hp; 836 struct netent *np; 837 u_int32_t val; 838 char *t; 839 840 if (af == 0) { 841 af = AF_INET; 842 aflen = sizeof(struct sockaddr_in); 843 } 844 rtm_addrs |= which; 845 switch (which) { 846 case RTA_DST: 847 su = &so_dst; 848 su->sa.sa_family = af; 849 break; 850 case RTA_GATEWAY: 851 su = &so_gate; 852 su->sa.sa_family = af; 853 break; 854 case RTA_NETMASK: 855 su = &so_mask; 856 break; 857 case RTA_GENMASK: 858 su = &so_genmask; 859 break; 860 case RTA_IFP: 861 su = &so_ifp; 862 su->sa.sa_family = af; 863 break; 864 case RTA_IFA: 865 su = &so_ifa; 866 su->sa.sa_family = af; 867 break; 868 default: 869 su = NULL; 870 usage("Internal Error"); 871 /*NOTREACHED*/ 872 } 873 su->sa.sa_len = aflen; 874 if (strcmp(s, "default") == 0) { 875 switch (which) { 876 case RTA_DST: 877 forcenet++; 878 (void) getaddr(RTA_NETMASK, s, 0); 879 break; 880 case RTA_NETMASK: 881 case RTA_GENMASK: 882 su->sa.sa_len = 0; 883 } 884 return (0); 885 } 886 switch (af) { 887 #ifndef SMALL 888 case AF_NS: 889 if (which == RTA_DST) { 890 extern short ns_bh[3]; 891 struct sockaddr_ns *sms = &(so_mask.sns); 892 memset(sms, 0, sizeof(*sms)); 893 sms->sns_family = 0; 894 sms->sns_len = 6; 895 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 896 rtm_addrs |= RTA_NETMASK; 897 } 898 su->sns.sns_addr = ns_addr(s); 899 return (!ns_nullhost(su->sns.sns_addr)); 900 901 case AF_OSI: 902 su->siso.siso_addr = *iso_addr(s); 903 if (which == RTA_NETMASK || which == RTA_GENMASK) { 904 char *cp = (char *)TSEL(&su->siso); 905 su->siso.siso_nlen = 0; 906 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 907 su->siso.siso_len = 1 + cp - (char *)su; 908 } 909 return (1); 910 911 case AF_CCITT: 912 ccitt_addr(s, &su->sx25); 913 return (which == RTA_DST ? x25_makemask() : 1); 914 #endif /* SMALL */ 915 916 case PF_ROUTE: 917 su->sa.sa_len = sizeof(*su); 918 sockaddr(s, &su->sa); 919 return (1); 920 921 case AF_APPLETALK: 922 t = strchr (s, '.'); 923 if (!t) { 924 badataddr: 925 errx(1, "bad address: %s", s); 926 } 927 val = atoi (s); 928 if (val > 65535) 929 goto badataddr; 930 su->sat.sat_addr.s_net = val; 931 val = atoi (t); 932 if (val > 256) 933 goto badataddr; 934 su->sat.sat_addr.s_node = val; 935 rtm_addrs |= RTA_NETMASK; 936 return(forcehost || su->sat.sat_addr.s_node != 0); 937 938 case AF_LINK: 939 link_addr(s, &su->sdl); 940 return (1); 941 942 case AF_INET: 943 default: 944 break; 945 } 946 947 if (hpp == NULL) 948 hpp = &hp; 949 *hpp = NULL; 950 if (((val = inet_addr(s)) != INADDR_NONE) && 951 (which != RTA_DST || forcenet == 0)) { 952 su->sin.sin_addr.s_addr = val; 953 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 954 return (1); 955 else { 956 val = ntohl(val); 957 goto netdone; 958 } 959 } 960 if ((val = inet_network(s)) != INADDR_NONE || 961 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 962 netdone: 963 if (which == RTA_DST) 964 inet_makenetandmask(val, &su->sin); 965 return (0); 966 } 967 hp = gethostbyname(s); 968 if (hp) { 969 *hpp = hp; 970 su->sin.sin_family = hp->h_addrtype; 971 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 972 return (1); 973 } 974 errx(1, "bad value: %s", s); 975 } 976 977 #ifndef SMALL 978 int 979 x25_makemask() 980 { 981 char *cp; 982 983 if ((rtm_addrs & RTA_NETMASK) == 0) { 984 rtm_addrs |= RTA_NETMASK; 985 for (cp = (char *)&so_mask.sx25.x25_net; 986 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 987 *cp = -1; 988 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 989 } 990 return 0; 991 } 992 993 short ns_nullh[] = {0,0,0}; 994 short ns_bh[] = {-1,-1,-1}; 995 996 char * 997 ns_print(sns) 998 struct sockaddr_ns *sns; 999 { 1000 struct ns_addr work; 1001 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1002 u_short port; 1003 static char mybuf[50], cport[10], chost[25]; 1004 char *host = ""; 1005 char *p; 1006 u_char *q; 1007 1008 work = sns->sns_addr; 1009 port = ntohs(work.x_port); 1010 work.x_port = 0; 1011 net.net_e = work.x_net; 1012 if (ns_nullhost(work) && net.int32_t_e == 0) { 1013 if (!port) 1014 return ("*.*"); 1015 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1016 return (mybuf); 1017 } 1018 1019 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1020 host = "any"; 1021 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1022 host = "*"; 1023 else { 1024 q = work.x_host.c_host; 1025 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1026 q[0], q[1], q[2], q[3], q[4], q[5]); 1027 for (p = chost; *p == '0' && p < chost + 12; p++) 1028 /* void */; 1029 host = p; 1030 } 1031 if (port) 1032 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1033 else 1034 *cport = 0; 1035 1036 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1037 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1038 return (mybuf); 1039 } 1040 1041 static void 1042 interfaces() 1043 { 1044 size_t needed; 1045 int mib[6]; 1046 char *buf, *lim, *next; 1047 struct rt_msghdr *rtm; 1048 1049 mib[0] = CTL_NET; 1050 mib[1] = PF_ROUTE; 1051 mib[2] = 0; /* protocol */ 1052 mib[3] = 0; /* wildcard address family */ 1053 mib[4] = NET_RT_IFLIST; 1054 mib[5] = 0; /* no flags */ 1055 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1056 err(1, "route-sysctl-estimate"); 1057 if ((buf = malloc(needed)) == NULL) 1058 err(1, "malloc"); 1059 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1060 err(1, "actual retrieval of interface table"); 1061 lim = buf + needed; 1062 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1063 rtm = (struct rt_msghdr *)next; 1064 print_rtmsg(rtm, rtm->rtm_msglen); 1065 } 1066 } 1067 1068 static void 1069 monitor() 1070 { 1071 int n; 1072 char msg[2048]; 1073 1074 verbose = 1; 1075 if (debugonly) { 1076 interfaces(); 1077 exit(0); 1078 } 1079 for(;;) { 1080 n = read(s, msg, 2048); 1081 (void) printf("got message of size %d\n", n); 1082 print_rtmsg((struct rt_msghdr *)msg, n); 1083 } 1084 } 1085 1086 #endif /* SMALL */ 1087 1088 1089 struct { 1090 struct rt_msghdr m_rtm; 1091 char m_space[512]; 1092 } m_rtmsg; 1093 1094 static int 1095 rtmsg(cmd, flags) 1096 int cmd, flags; 1097 { 1098 static int seq; 1099 int rlen; 1100 char *cp = m_rtmsg.m_space; 1101 int l; 1102 1103 #define NEXTADDR(w, u) \ 1104 if (rtm_addrs & (w)) {\ 1105 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1106 if (verbose) sodump(&(u),"u");\ 1107 } 1108 1109 errno = 0; 1110 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1111 if (cmd == 'a') 1112 cmd = RTM_ADD; 1113 else if (cmd == 'c') 1114 cmd = RTM_CHANGE; 1115 else if (cmd == 'g') { 1116 #ifdef SMALL 1117 return (-1); 1118 #else /* SMALL */ 1119 cmd = RTM_GET; 1120 if (so_ifp.sa.sa_family == 0) { 1121 so_ifp.sa.sa_family = AF_LINK; 1122 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1123 rtm_addrs |= RTA_IFP; 1124 } 1125 #endif /* SMALL */ 1126 } else 1127 cmd = RTM_DELETE; 1128 #define rtm m_rtmsg.m_rtm 1129 rtm.rtm_type = cmd; 1130 rtm.rtm_flags = flags; 1131 rtm.rtm_version = RTM_VERSION; 1132 rtm.rtm_seq = ++seq; 1133 rtm.rtm_addrs = rtm_addrs; 1134 rtm.rtm_rmx = rt_metrics; 1135 rtm.rtm_inits = rtm_inits; 1136 1137 if (rtm_addrs & RTA_NETMASK) 1138 mask_addr(); 1139 NEXTADDR(RTA_DST, so_dst); 1140 NEXTADDR(RTA_GATEWAY, so_gate); 1141 NEXTADDR(RTA_NETMASK, so_mask); 1142 NEXTADDR(RTA_GENMASK, so_genmask); 1143 NEXTADDR(RTA_IFP, so_ifp); 1144 NEXTADDR(RTA_IFA, so_ifa); 1145 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1146 if (verbose) 1147 print_rtmsg(&rtm, l); 1148 if (debugonly) 1149 return (0); 1150 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1151 perror("writing to routing socket"); 1152 return (-1); 1153 } 1154 #ifndef SMALL 1155 if (cmd == RTM_GET) { 1156 do { 1157 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1158 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1159 if (l < 0) 1160 err(1, "read from routing socket"); 1161 else 1162 print_getmsg(&rtm, l); 1163 } 1164 #endif /* SMALL */ 1165 #undef rtm 1166 return (0); 1167 } 1168 1169 static void 1170 mask_addr() 1171 { 1172 int olen = so_mask.sa.sa_len; 1173 char *cp1 = olen + (char *)&so_mask, *cp2; 1174 1175 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1176 if (*--cp1 != 0) { 1177 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1178 break; 1179 } 1180 if ((rtm_addrs & RTA_DST) == 0) 1181 return; 1182 switch (so_dst.sa.sa_family) { 1183 case AF_NS: 1184 case AF_INET: 1185 case AF_CCITT: 1186 case AF_APPLETALK: 1187 case 0: 1188 return; 1189 case AF_ISO: 1190 olen = MIN(so_dst.siso.siso_nlen, 1191 MAX(so_mask.sa.sa_len - 6, 0)); 1192 break; 1193 } 1194 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1195 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1196 while (cp2 > cp1) 1197 *--cp2 = 0; 1198 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1199 while (cp1 > so_dst.sa.sa_data) 1200 *--cp1 &= *--cp2; 1201 switch (so_dst.sa.sa_family) { 1202 case AF_ISO: 1203 so_dst.siso.siso_nlen = olen; 1204 break; 1205 } 1206 } 1207 1208 char *msgtypes[] = { 1209 "", 1210 "RTM_ADD: Add Route", 1211 "RTM_DELETE: Delete Route", 1212 "RTM_CHANGE: Change Metrics or flags", 1213 "RTM_GET: Report Metrics", 1214 "RTM_LOSING: Kernel Suspects Partitioning", 1215 "RTM_REDIRECT: Told to use different route", 1216 "RTM_MISS: Lookup failed on this address", 1217 "RTM_LOCK: fix specified metrics", 1218 "RTM_OLDADD: caused by SIOCADDRT", 1219 "RTM_OLDDEL: caused by SIOCDELRT", 1220 "RTM_RESOLVE: Route created by cloning", 1221 "RTM_NEWADDR: address being added to iface", 1222 "RTM_DELADDR: address being removed from iface", 1223 "RTM_IFINFO: iface status change", 1224 0, 1225 }; 1226 1227 char metricnames[] = 1228 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1229 char routeflags[] = 1230 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\017PROTO2\020PROTO1"; 1231 char ifnetflags[] = 1232 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1233 char addrnames[] = 1234 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1235 1236 static void 1237 print_rtmsg(rtm, msglen) 1238 struct rt_msghdr *rtm; 1239 int msglen; 1240 { 1241 struct if_msghdr *ifm; 1242 struct ifa_msghdr *ifam; 1243 1244 if (verbose == 0) 1245 return; 1246 if (rtm->rtm_version != RTM_VERSION) { 1247 (void) printf("routing message version %d not understood\n", 1248 rtm->rtm_version); 1249 return; 1250 } 1251 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1252 switch (rtm->rtm_type) { 1253 case RTM_IFINFO: 1254 ifm = (struct if_msghdr *)rtm; 1255 (void) printf("if# %d, flags:", ifm->ifm_index); 1256 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1257 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1258 break; 1259 case RTM_NEWADDR: 1260 case RTM_DELADDR: 1261 ifam = (struct ifa_msghdr *)rtm; 1262 (void) printf("metric %d, flags:", ifam->ifam_metric); 1263 bprintf(stdout, ifam->ifam_flags, routeflags); 1264 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1265 break; 1266 default: 1267 (void) printf("pid: %d, seq %d, errno %d, flags:", 1268 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1269 bprintf(stdout, rtm->rtm_flags, routeflags); 1270 pmsg_common(rtm); 1271 } 1272 } 1273 1274 #ifndef SMALL 1275 static void 1276 print_getmsg(rtm, msglen) 1277 struct rt_msghdr *rtm; 1278 int msglen; 1279 { 1280 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1281 struct sockaddr_dl *ifp = NULL; 1282 struct sockaddr *sa; 1283 char *cp; 1284 int i; 1285 1286 (void) printf(" route to: %s\n", 1287 routename((struct sockaddr *) &so_dst)); 1288 if (rtm->rtm_version != RTM_VERSION) { 1289 warnx("routing message version %d not understood", 1290 rtm->rtm_version); 1291 return; 1292 } 1293 if (rtm->rtm_msglen > msglen) { 1294 warnx("message length mismatch, in packet %d, returned %d\n", 1295 rtm->rtm_msglen, msglen); 1296 } 1297 if (rtm->rtm_errno) { 1298 warn("RTM_GET"); 1299 return; 1300 } 1301 cp = ((char *)(rtm + 1)); 1302 if (rtm->rtm_addrs) 1303 for (i = 1; i; i <<= 1) 1304 if (i & rtm->rtm_addrs) { 1305 sa = (struct sockaddr *)cp; 1306 switch (i) { 1307 case RTA_DST: 1308 dst = sa; 1309 break; 1310 case RTA_GATEWAY: 1311 gate = sa; 1312 break; 1313 case RTA_NETMASK: 1314 mask = sa; 1315 break; 1316 case RTA_IFP: 1317 if (sa->sa_family == AF_LINK && 1318 ((struct sockaddr_dl *)sa)->sdl_nlen) 1319 ifp = (struct sockaddr_dl *)sa; 1320 break; 1321 } 1322 ADVANCE(cp, sa); 1323 } 1324 if (dst && mask) 1325 mask->sa_family = dst->sa_family; /* XXX */ 1326 if (dst) 1327 (void)printf("destination: %s\n", routename(dst)); 1328 if (mask) { 1329 int savenflag = nflag; 1330 1331 nflag = 1; 1332 (void)printf(" mask: %s\n", routename(mask)); 1333 nflag = savenflag; 1334 } 1335 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1336 (void)printf(" gateway: %s\n", routename(gate)); 1337 if (ifp) 1338 (void)printf(" interface: %.*s\n", 1339 ifp->sdl_nlen, ifp->sdl_data); 1340 (void)printf(" flags: "); 1341 bprintf(stdout, rtm->rtm_flags, routeflags); 1342 1343 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1344 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1345 1346 (void) printf("\n%s\n", "\ 1347 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1348 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1349 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1350 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1351 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1352 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1353 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1354 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1355 if (rtm->rtm_rmx.rmx_expire) 1356 rtm->rtm_rmx.rmx_expire -= time(0); 1357 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1358 #undef lock 1359 #undef msec 1360 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1361 if (verbose) 1362 pmsg_common(rtm); 1363 else if (rtm->rtm_addrs &~ RTA_IGN) { 1364 (void) printf("sockaddrs: "); 1365 bprintf(stdout, rtm->rtm_addrs, addrnames); 1366 putchar('\n'); 1367 } 1368 #undef RTA_IGN 1369 } 1370 #endif /* SMALL */ 1371 1372 void 1373 pmsg_common(rtm) 1374 struct rt_msghdr *rtm; 1375 { 1376 (void) printf("\nlocks: "); 1377 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1378 (void) printf(" inits: "); 1379 bprintf(stdout, rtm->rtm_inits, metricnames); 1380 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1381 } 1382 1383 static void 1384 pmsg_addrs(cp, addrs) 1385 char *cp; 1386 int addrs; 1387 { 1388 struct sockaddr *sa; 1389 int i; 1390 1391 if (addrs == 0) 1392 return; 1393 (void) printf("\nsockaddrs: "); 1394 bprintf(stdout, addrs, addrnames); 1395 (void) putchar('\n'); 1396 for (i = 1; i; i <<= 1) 1397 if (i & addrs) { 1398 sa = (struct sockaddr *)cp; 1399 (void) printf(" %s", routename(sa)); 1400 ADVANCE(cp, sa); 1401 } 1402 (void) putchar('\n'); 1403 (void) fflush(stdout); 1404 } 1405 1406 static void 1407 bprintf(fp, b, s) 1408 FILE *fp; 1409 int b; 1410 u_char *s; 1411 { 1412 int i; 1413 int gotsome = 0; 1414 1415 if (b == 0) 1416 return; 1417 while ((i = *s++) != 0) { 1418 if (b & (1 << (i-1))) { 1419 if (gotsome == 0) 1420 i = '<'; 1421 else 1422 i = ','; 1423 (void) putc(i, fp); 1424 gotsome = 1; 1425 for (; (i = *s) > 32; s++) 1426 (void) putc(i, fp); 1427 } else 1428 while (*s > 32) 1429 s++; 1430 } 1431 if (gotsome) 1432 (void) putc('>', fp); 1433 } 1434 1435 static int 1436 keyword(cp) 1437 char *cp; 1438 { 1439 struct keytab *kt = keywords; 1440 1441 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1442 kt++; 1443 return kt->kt_i; 1444 } 1445 1446 static void 1447 sodump(su, which) 1448 sup su; 1449 char *which; 1450 { 1451 switch (su->sa.sa_family) { 1452 case AF_INET: 1453 (void) printf("%s: inet %s; ", 1454 which, inet_ntoa(su->sin.sin_addr)); 1455 break; 1456 case AF_APPLETALK: 1457 (void) printf("%s: atalk %d.%d; ", 1458 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1459 break; 1460 case AF_LINK: 1461 (void) printf("%s: link %s; ", 1462 which, link_ntoa(&su->sdl)); 1463 break; 1464 #ifndef SMALL 1465 case AF_ISO: 1466 (void) printf("%s: iso %s; ", 1467 which, iso_ntoa(&su->siso.siso_addr)); 1468 break; 1469 case AF_NS: 1470 (void) printf("%s: xns %s; ", 1471 which, ns_ntoa(su->sns.sns_addr)); 1472 break; 1473 #endif /* SMALL */ 1474 default: 1475 (void) printf("af %p: %s; ", 1476 which, any_ntoa(&su->sa)); 1477 } 1478 (void) fflush(stdout); 1479 } 1480 1481 /* States*/ 1482 #define VIRGIN 0 1483 #define GOTONE 1 1484 #define GOTTWO 2 1485 /* Inputs */ 1486 #define DIGIT (4*0) 1487 #define END (4*1) 1488 #define DELIM (4*2) 1489 1490 static void 1491 sockaddr(addr, sa) 1492 char *addr; 1493 struct sockaddr *sa; 1494 { 1495 char *cp = (char *)sa; 1496 int size = sa->sa_len; 1497 char *cplim = cp + size; 1498 int byte = 0, state = VIRGIN, new = 0; 1499 1500 (void) memset(cp, 0, size); 1501 cp++; 1502 do { 1503 if ((*addr >= '0') && (*addr <= '9')) { 1504 new = *addr - '0'; 1505 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1506 new = *addr - 'a' + 10; 1507 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1508 new = *addr - 'A' + 10; 1509 } else if (*addr == 0) 1510 state |= END; 1511 else 1512 state |= DELIM; 1513 addr++; 1514 switch (state /* | INPUT */) { 1515 case GOTTWO | DIGIT: 1516 *cp++ = byte; /*FALLTHROUGH*/ 1517 case VIRGIN | DIGIT: 1518 state = GOTONE; byte = new; continue; 1519 case GOTONE | DIGIT: 1520 state = GOTTWO; byte = new + (byte << 4); continue; 1521 default: /* | DELIM */ 1522 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1523 case GOTONE | END: 1524 case GOTTWO | END: 1525 *cp++ = byte; /* FALLTHROUGH */ 1526 case VIRGIN | END: 1527 break; 1528 } 1529 break; 1530 } while (cp < cplim); 1531 sa->sa_len = cp - (char *)sa; 1532 } 1533
Indexes created Mon Sep 29 21:09:56 GMT 2025