route.c revision 1.26
1 /* $NetBSD: route.c,v 1.26 1997/11/16 17:03:11 christos 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 1.26 1997/11/16 17:03:11 christos 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 <paths.h> 75 #include <err.h> 76 77 #include "keywords.h" 78 #include "extern.h" 79 80 typedef union sockunion *sup; 81 82 int main __P((int, char **)); 83 static void usage __P((char *)); 84 static char *any_ntoa __P((const struct sockaddr *)); 85 static void set_metric __P((char *, int)); 86 static void newroute __P((int, char **)); 87 static void inet_makenetandmask __P((u_long, struct sockaddr_in *)); 88 static int getaddr __P((int, char *, struct hostent **)); 89 #ifndef SMALL 90 static void flushroutes __P((int, char *[])); 91 static int x25_makemask __P((void)); 92 static void interfaces __P((void)); 93 static void monitor __P((void)); 94 static void print_getmsg __P((struct rt_msghdr *, int)); 95 #endif 96 static int rtmsg __P((int, int )); 97 static void mask_addr __P((void)); 98 static void print_rtmsg __P((struct rt_msghdr *, int)); 99 static void pmsg_common __P((struct rt_msghdr *)); 100 static void pmsg_addrs __P((char *, int)); 101 static void bprintf __P((FILE *, int, u_char *)); 102 static int keyword __P((char *)); 103 static void sodump __P((sup, char *)); 104 static void sockaddr __P((char *, struct sockaddr *)); 105 106 struct ortentry route; 107 union sockunion { 108 struct sockaddr sa; 109 struct sockaddr_in sin; 110 struct sockaddr_at sat; 111 struct sockaddr_ns sns; 112 struct sockaddr_iso siso; 113 struct sockaddr_dl sdl; 114 struct sockaddr_x25 sx25; 115 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 116 117 int pid, rtm_addrs; 118 int s; 119 int forcehost, forcenet, doflush, nflag, af, qflag, tflag; 120 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 121 int locking, lockrest, debugonly; 122 struct rt_metrics rt_metrics; 123 u_long rtm_inits; 124 125 static void 126 usage(cp) 127 char *cp; 128 { 129 extern char *__progname; 130 if (cp) 131 warnx("botched keyword: %s", cp); 132 (void) fprintf(stderr, 133 "Usage: %s [ -nqv ] cmd [[ -<qualifers> ] args ]\n", __progname); 134 exit(1); 135 /* NOTREACHED */ 136 } 137 138 #define ROUNDUP(a) \ 139 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 140 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 141 142 int 143 main(argc, argv) 144 int argc; 145 char **argv; 146 { 147 int ch; 148 149 if (argc < 2) 150 usage(NULL); 151 152 while ((ch = getopt(argc, argv, "nqdtv")) != -1) 153 switch(ch) { 154 case 'n': 155 nflag = 1; 156 break; 157 case 'q': 158 qflag = 1; 159 break; 160 case 'v': 161 verbose = 1; 162 break; 163 case 't': 164 tflag = 1; 165 break; 166 case 'd': 167 debugonly = 1; 168 break; 169 case '?': 170 default: 171 usage(NULL); 172 } 173 argc -= optind; 174 argv += optind; 175 176 pid = getpid(); 177 if (tflag) 178 s = open("/dev/null", O_WRONLY, 0); 179 else 180 s = socket(PF_ROUTE, SOCK_RAW, 0); 181 if (s < 0) 182 err(1, "socket"); 183 184 if (*argv == NULL) 185 goto no_cmd; 186 switch (keyword(*argv)) { 187 188 #ifndef SMALL 189 case K_GET: 190 #endif /* SMALL */ 191 case K_CHANGE: 192 case K_ADD: 193 case K_DELETE: 194 newroute(argc, argv); 195 break; 196 197 case K_SHOW: 198 show(argc, argv); 199 break; 200 201 #ifndef SMALL 202 case K_MONITOR: 203 monitor(); 204 break; 205 206 case K_FLUSH: 207 flushroutes(argc, argv); 208 break; 209 #endif /* SMALL */ 210 211 no_cmd: 212 default: 213 usage(*argv); 214 return 1; 215 } 216 return 0; 217 } 218 219 #ifndef SMALL 220 /* 221 * Purge all entries in the routing tables not 222 * associated with network interfaces. 223 */ 224 static void 225 flushroutes(argc, argv) 226 int argc; 227 char *argv[]; 228 { 229 size_t needed; 230 int mib[6], rlen, seqno; 231 char *buf, *next, *lim; 232 struct rt_msghdr *rtm; 233 234 shutdown(s, 0); /* Don't want to read back our messages */ 235 if (argc > 1) { 236 argv++; 237 if (argc == 2 && **argv == '-') 238 switch (keyword(*argv + 1)) { 239 case K_INET: 240 af = AF_INET; 241 break; 242 case K_ATALK: 243 af = AF_APPLETALK; 244 break; 245 case K_XNS: 246 af = AF_NS; 247 break; 248 case K_LINK: 249 af = AF_LINK; 250 break; 251 case K_ISO: 252 case K_OSI: 253 af = AF_ISO; 254 break; 255 case K_X25: 256 af = AF_CCITT; 257 default: 258 goto bad; 259 } else 260 bad: usage(*argv); 261 } 262 mib[0] = CTL_NET; 263 mib[1] = PF_ROUTE; 264 mib[2] = 0; /* protocol */ 265 mib[3] = 0; /* wildcard address family */ 266 mib[4] = NET_RT_DUMP; 267 mib[5] = 0; /* no flags */ 268 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 269 err(1, "route-sysctl-estimate"); 270 if (needed == 0) 271 return; 272 if ((buf = malloc(needed)) == NULL) 273 err(1, "malloc"); 274 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 275 err(1, "actual retrieval of routing table"); 276 lim = buf + needed; 277 if (verbose) { 278 (void) printf("Examining routing table from sysctl\n"); 279 if (af) printf("(address family %s)\n", (*argv + 1)); 280 } 281 seqno = 0; /* ??? */ 282 for (next = buf; next < lim; next += rtm->rtm_msglen) { 283 rtm = (struct rt_msghdr *)next; 284 if (verbose) 285 print_rtmsg(rtm, rtm->rtm_msglen); 286 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 287 continue; 288 if (af) { 289 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 290 291 if (sa->sa_family != af) 292 continue; 293 } 294 if (debugonly) 295 continue; 296 rtm->rtm_type = RTM_DELETE; 297 rtm->rtm_seq = seqno; 298 rlen = write(s, next, rtm->rtm_msglen); 299 if (rlen < (int)rtm->rtm_msglen) { 300 warn("write to routing socket, got %d for rlen", rlen); 301 break; 302 } 303 seqno++; 304 if (qflag) 305 continue; 306 if (verbose) 307 print_rtmsg(rtm, rlen); 308 else { 309 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 310 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 311 routename(sa) : netname(sa)); 312 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 313 (void) printf("%-20.20s ", routename(sa)); 314 (void) printf("done\n"); 315 } 316 } 317 } 318 #endif /* SMALL */ 319 320 321 static char hexlist[] = "0123456789abcdef"; 322 323 static char * 324 any_ntoa(sa) 325 const struct sockaddr *sa; 326 { 327 static char obuf[64]; 328 const char *in; 329 char *out; 330 int len; 331 332 len = sa->sa_len; 333 in = sa->sa_data; 334 out = obuf; 335 336 do { 337 *out++ = hexlist[(*in >> 4) & 15]; 338 *out++ = hexlist[(*in++) & 15]; 339 *out++ = '.'; 340 } while (--len > 0); 341 out[-1] = '\0'; 342 return obuf; 343 } 344 345 346 char * 347 routename(sa) 348 struct sockaddr *sa; 349 { 350 char *cp; 351 static char line[50]; 352 struct hostent *hp; 353 static char domain[MAXHOSTNAMELEN + 1]; 354 static int first = 1; 355 struct in_addr in; 356 357 if (first) { 358 first = 0; 359 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 360 (cp = strchr(domain, '.'))) { 361 (void)strncpy(domain, cp + 1, sizeof(domain) - 1); 362 domain[sizeof(domain) - 1] = '\0'; 363 } else 364 domain[0] = 0; 365 } 366 367 if (sa->sa_len == 0) { 368 strncpy(line, "default", sizeof(line) - 1); 369 line[sizeof(line) - 1] = '\0'; 370 } else switch (sa->sa_family) { 371 372 case AF_INET: 373 in = ((struct sockaddr_in *)sa)->sin_addr; 374 375 cp = 0; 376 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 377 cp = "default"; 378 if (cp == 0 && !nflag) { 379 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 380 AF_INET); 381 if (hp) { 382 if ((cp = strchr(hp->h_name, '.')) && 383 !strcmp(cp + 1, domain)) 384 *cp = 0; 385 cp = hp->h_name; 386 } 387 } 388 if (cp) 389 (void)strncpy(line, cp, sizeof(line) - 1); 390 else 391 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 392 line[sizeof(line) - 1] = '\0'; 393 break; 394 395 case AF_LINK: 396 return (link_ntoa((struct sockaddr_dl *)sa)); 397 398 #ifndef SMALL 399 case AF_NS: 400 return (ns_print((struct sockaddr_ns *)sa)); 401 402 case AF_ISO: 403 (void)snprintf(line, sizeof line, "iso %s", 404 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 405 break; 406 407 case AF_APPLETALK: 408 (void) snprintf(line, sizeof(line), "atalk %d.%d", 409 ((struct sockaddr_at *)sa)->sat_addr.s_net, 410 ((struct sockaddr_at *)sa)->sat_addr.s_node); 411 break; 412 #endif /* SMALL */ 413 414 default: 415 (void)snprintf(line, sizeof line, "(%d) %s", 416 sa->sa_family, any_ntoa(sa)); 417 break; 418 419 } 420 return (line); 421 } 422 423 /* 424 * Return the name of the network whose address is given. 425 * The address is assumed to be that of a net or subnet, not a host. 426 */ 427 char * 428 netname(sa) 429 struct sockaddr *sa; 430 { 431 char *cp = 0; 432 static char line[50]; 433 struct netent *np = 0; 434 u_long net, mask; 435 u_long i; 436 int subnetshift; 437 struct in_addr in; 438 439 switch (sa->sa_family) { 440 441 case AF_INET: 442 in = ((struct sockaddr_in *)sa)->sin_addr; 443 i = ntohl(in.s_addr); 444 if (i == 0) 445 cp = "default"; 446 else if (!nflag) { 447 if (IN_CLASSA(i)) { 448 mask = IN_CLASSA_NET; 449 subnetshift = 8; 450 } else if (IN_CLASSB(i)) { 451 mask = IN_CLASSB_NET; 452 subnetshift = 8; 453 } else { 454 mask = IN_CLASSC_NET; 455 subnetshift = 4; 456 } 457 /* 458 * If there are more bits than the standard mask 459 * would suggest, subnets must be in use. 460 * Guess at the subnet mask, assuming reasonable 461 * width subnet fields. 462 */ 463 while (i &~ mask) 464 mask = (long)mask >> subnetshift; 465 net = i & mask; 466 while ((mask & 1) == 0) 467 mask >>= 1, net >>= 1; 468 np = getnetbyaddr(net, AF_INET); 469 if (np) 470 cp = np->n_name; 471 } 472 if (cp) { 473 (void)strncpy(line, cp, sizeof(line) - 1); 474 line[sizeof(line) - 1] = '\0'; 475 } else { 476 #if 0 /* XXX - This is silly... */ 477 #define C(x) ((x) & 0xff) 478 if ((i & 0xffffff) == 0) 479 (void)snprintf(line, sizeof line, "%u", 480 C(i >> 24)); 481 else if ((i & 0xffff) == 0) 482 (void)snprintf(line, sizeof line, "%u.%u", 483 C(i >> 24), C(i >> 16)); 484 else if ((i & 0xff) == 0) 485 (void)snprintf(line, sizeof line, "%u.%u.%u", 486 C(i >> 24), C(i >> 16), C(i >> 8)); 487 else 488 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 489 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 490 #undef C 491 #else /* XXX */ 492 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 493 #endif /* XXX */ 494 } 495 break; 496 497 case AF_LINK: 498 return (link_ntoa((struct sockaddr_dl *)sa)); 499 500 #ifndef SMALL 501 case AF_NS: 502 return (ns_print((struct sockaddr_ns *)sa)); 503 504 case AF_ISO: 505 (void)snprintf(line, sizeof line, "iso %s", 506 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 507 break; 508 509 case AF_APPLETALK: 510 (void) snprintf(line, sizeof(line), "atalk %d.%d", 511 ((struct sockaddr_at *)sa)->sat_addr.s_net, 512 ((struct sockaddr_at *)sa)->sat_addr.s_node); 513 break; 514 #endif /* SMALL */ 515 516 default: 517 (void)snprintf(line, sizeof line, "af %d: %s", 518 sa->sa_family, any_ntoa(sa)); 519 break; 520 } 521 return (line); 522 } 523 524 static void 525 set_metric(value, key) 526 char *value; 527 int key; 528 { 529 int flag = 0; 530 u_long noval, *valp = &noval; 531 532 switch (key) { 533 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 534 caseof(K_MTU, RTV_MTU, rmx_mtu); 535 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 536 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 537 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 538 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 539 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 540 caseof(K_RTT, RTV_RTT, rmx_rtt); 541 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 542 } 543 rtm_inits |= flag; 544 if (lockrest || locking) 545 rt_metrics.rmx_locks |= flag; 546 if (locking) 547 locking = 0; 548 *valp = atoi(value); 549 } 550 551 static void 552 newroute(argc, argv) 553 int argc; 554 char **argv; 555 { 556 char *cmd, *dest = "", *gateway = "", *err; 557 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 558 int key; 559 struct hostent *hp = 0; 560 561 cmd = argv[0]; 562 if (*cmd != 'g') 563 shutdown(s, 0); /* Don't want to read back our messages */ 564 while (--argc > 0) { 565 if (**(++argv)== '-') { 566 switch (key = keyword(1 + *argv)) { 567 568 case K_SA: 569 af = PF_ROUTE; 570 aflen = sizeof(union sockunion); 571 break; 572 573 case K_ATALK: 574 af = AF_APPLETALK; 575 aflen = sizeof(struct sockaddr_at); 576 break; 577 578 case K_INET: 579 af = AF_INET; 580 aflen = sizeof(struct sockaddr_in); 581 break; 582 583 case K_LINK: 584 af = AF_LINK; 585 aflen = sizeof(struct sockaddr_dl); 586 break; 587 588 case K_OSI: 589 case K_ISO: 590 af = AF_ISO; 591 aflen = sizeof(struct sockaddr_iso); 592 break; 593 594 case K_X25: 595 af = AF_CCITT; 596 aflen = sizeof(struct sockaddr_x25); 597 break; 598 599 case K_XNS: 600 af = AF_NS; 601 aflen = sizeof(struct sockaddr_ns); 602 break; 603 604 case K_IFACE: 605 case K_INTERFACE: 606 iflag++; 607 break; 608 case K_NOSTATIC: 609 flags &= ~RTF_STATIC; 610 break; 611 case K_LLINFO: 612 flags |= RTF_LLINFO; 613 break; 614 case K_LOCK: 615 locking = 1; 616 break; 617 case K_LOCKREST: 618 lockrest = 1; 619 break; 620 case K_HOST: 621 forcehost++; 622 break; 623 case K_REJECT: 624 flags |= RTF_REJECT; 625 break; 626 case K_BLACKHOLE: 627 flags |= RTF_BLACKHOLE; 628 break; 629 case K_PROTO1: 630 flags |= RTF_PROTO1; 631 break; 632 case K_PROTO2: 633 flags |= RTF_PROTO2; 634 break; 635 case K_CLONING: 636 flags |= RTF_CLONING; 637 break; 638 case K_XRESOLVE: 639 flags |= RTF_XRESOLVE; 640 break; 641 case K_STATIC: 642 flags |= RTF_STATIC; 643 break; 644 case K_IFA: 645 if (!--argc) 646 usage(1+*argv); 647 (void) getaddr(RTA_IFA, *++argv, 0); 648 break; 649 case K_IFP: 650 if (!--argc) 651 usage(1+*argv); 652 (void) getaddr(RTA_IFP, *++argv, 0); 653 break; 654 case K_GENMASK: 655 if (!--argc) 656 usage(1+*argv); 657 (void) getaddr(RTA_GENMASK, *++argv, 0); 658 break; 659 case K_GATEWAY: 660 if (!--argc) 661 usage(1+*argv); 662 (void) getaddr(RTA_GATEWAY, *++argv, 0); 663 break; 664 case K_DST: 665 if (!--argc) 666 usage(1+*argv); 667 ishost = getaddr(RTA_DST, *++argv, &hp); 668 dest = *argv; 669 break; 670 case K_NETMASK: 671 if (!--argc) 672 usage(1+*argv); 673 (void) getaddr(RTA_NETMASK, *++argv, 0); 674 /* FALLTHROUGH */ 675 case K_NET: 676 forcenet++; 677 break; 678 case K_MTU: 679 case K_HOPCOUNT: 680 case K_EXPIRE: 681 case K_RECVPIPE: 682 case K_SENDPIPE: 683 case K_SSTHRESH: 684 case K_RTT: 685 case K_RTTVAR: 686 if (!--argc) 687 usage(1+*argv); 688 set_metric(*++argv, key); 689 break; 690 default: 691 usage(1+*argv); 692 } 693 } else { 694 if ((rtm_addrs & RTA_DST) == 0) { 695 dest = *argv; 696 ishost = getaddr(RTA_DST, *argv, &hp); 697 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 698 gateway = *argv; 699 (void) getaddr(RTA_GATEWAY, *argv, &hp); 700 } else { 701 int ret = atoi(*argv); 702 703 if (ret == 0) { 704 if (!qflag && strcmp(*argv, "0") == 0) 705 warnx("%s, %s", 706 "old usage of trailing 0", 707 "assuming route to if"); 708 else 709 usage((char *)NULL); 710 iflag = 1; 711 continue; 712 } else if (ret > 0 && ret < 10) { 713 if (!qflag) { 714 warnx("%s, %s", 715 "old usage of trailing digit", 716 "assuming route via gateway"); 717 } 718 iflag = 0; 719 continue; 720 } 721 (void) getaddr(RTA_NETMASK, *argv, 0); 722 } 723 } 724 } 725 if (forcehost) 726 ishost = 1; 727 if (forcenet) 728 ishost = 0; 729 flags |= RTF_UP; 730 if (ishost) 731 flags |= RTF_HOST; 732 if (iflag == 0) 733 flags |= RTF_GATEWAY; 734 for (attempts = 1; ; attempts++) { 735 errno = 0; 736 if ((ret = rtmsg(*cmd, flags)) == 0) 737 break; 738 if (errno != ENETUNREACH && errno != ESRCH) 739 break; 740 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 741 hp->h_addr_list++; 742 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 743 hp->h_length); 744 } else 745 break; 746 } 747 if (*cmd == 'g') 748 exit(0); 749 oerrno = errno; 750 if (!qflag) { 751 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 752 if (*gateway) { 753 (void) printf(": gateway %s", gateway); 754 if (attempts > 1 && ret == 0 && af == AF_INET) 755 (void) printf(" (%s)", 756 inet_ntoa(((struct sockaddr_in *) 757 &route.rt_gateway)->sin_addr)); 758 } 759 if (ret == 0) 760 (void) printf("\n"); 761 } 762 if (ret != 0) { 763 switch (oerrno) { 764 case ESRCH: 765 err = "not in table"; 766 break; 767 case EBUSY: 768 err = "entry in use"; 769 break; 770 case ENOBUFS: 771 err = "routing table overflow"; 772 break; 773 default: 774 err = strerror(oerrno); 775 break; 776 } 777 (void) printf(": %s\n", err); 778 } 779 } 780 781 static void 782 inet_makenetandmask(net, sin) 783 u_long net; 784 struct sockaddr_in *sin; 785 { 786 u_long addr, mask = 0; 787 char *cp; 788 789 rtm_addrs |= RTA_NETMASK; 790 if (net == 0) 791 mask = addr = 0; 792 else if (net < 128) { 793 addr = net << IN_CLASSA_NSHIFT; 794 mask = IN_CLASSA_NET; 795 } else if (net < 65536) { 796 addr = net << IN_CLASSB_NSHIFT; 797 mask = IN_CLASSB_NET; 798 } else if (net < 16777216L) { 799 addr = net << IN_CLASSC_NSHIFT; 800 mask = IN_CLASSC_NET; 801 } else { 802 addr = net; 803 if ((addr & IN_CLASSA_HOST) == 0) 804 mask = IN_CLASSA_NET; 805 else if ((addr & IN_CLASSB_HOST) == 0) 806 mask = IN_CLASSB_NET; 807 else if ((addr & IN_CLASSC_HOST) == 0) 808 mask = IN_CLASSC_NET; 809 else 810 mask = -1; 811 } 812 sin->sin_addr.s_addr = htonl(addr); 813 sin = &so_mask.sin; 814 sin->sin_addr.s_addr = htonl(mask); 815 sin->sin_len = 0; 816 sin->sin_family = 0; 817 cp = (char *)(&sin->sin_addr + 1); 818 while (*--cp == 0 && cp > (char *)sin) 819 ; 820 sin->sin_len = 1 + cp - (char *)sin; 821 } 822 823 /* 824 * Interpret an argument as a network address of some kind, 825 * returning 1 if a host address, 0 if a network address. 826 */ 827 static int 828 getaddr(which, s, hpp) 829 int which; 830 char *s; 831 struct hostent **hpp; 832 { 833 sup su; 834 struct hostent *hp; 835 struct netent *np; 836 u_long val; 837 char *t; 838 839 if (af == 0) { 840 af = AF_INET; 841 aflen = sizeof(struct sockaddr_in); 842 } 843 rtm_addrs |= which; 844 switch (which) { 845 case RTA_DST: 846 su = &so_dst; 847 su->sa.sa_family = af; 848 break; 849 case RTA_GATEWAY: 850 su = &so_gate; 851 su->sa.sa_family = af; 852 break; 853 case RTA_NETMASK: 854 su = &so_mask; 855 break; 856 case RTA_GENMASK: 857 su = &so_genmask; 858 break; 859 case RTA_IFP: 860 su = &so_ifp; 861 su->sa.sa_family = af; 862 break; 863 case RTA_IFA: 864 su = &so_ifa; 865 su->sa.sa_family = af; 866 break; 867 default: 868 su = NULL; 869 usage("Internal Error"); 870 /*NOTREACHED*/ 871 } 872 su->sa.sa_len = aflen; 873 if (strcmp(s, "default") == 0) { 874 switch (which) { 875 case RTA_DST: 876 forcenet++; 877 (void) getaddr(RTA_NETMASK, s, 0); 878 break; 879 case RTA_NETMASK: 880 case RTA_GENMASK: 881 su->sa.sa_len = 0; 882 } 883 return (0); 884 } 885 switch (af) { 886 #ifndef SMALL 887 case AF_NS: 888 if (which == RTA_DST) { 889 extern short ns_bh[3]; 890 struct sockaddr_ns *sms = &(so_mask.sns); 891 memset(sms, 0, sizeof(*sms)); 892 sms->sns_family = 0; 893 sms->sns_len = 6; 894 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 895 rtm_addrs |= RTA_NETMASK; 896 } 897 su->sns.sns_addr = ns_addr(s); 898 return (!ns_nullhost(su->sns.sns_addr)); 899 900 case AF_OSI: 901 su->siso.siso_addr = *iso_addr(s); 902 if (which == RTA_NETMASK || which == RTA_GENMASK) { 903 char *cp = (char *)TSEL(&su->siso); 904 su->siso.siso_nlen = 0; 905 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 906 su->siso.siso_len = 1 + cp - (char *)su; 907 } 908 return (1); 909 910 case AF_CCITT: 911 ccitt_addr(s, &su->sx25); 912 return (which == RTA_DST ? x25_makemask() : 1); 913 #endif /* SMALL */ 914 915 case PF_ROUTE: 916 su->sa.sa_len = sizeof(*su); 917 sockaddr(s, &su->sa); 918 return (1); 919 920 case AF_APPLETALK: 921 t = strchr (s, '.'); 922 if (!t) { 923 badataddr: 924 errx(1, "bad address: %s", s); 925 } 926 val = atoi (s); 927 if (val > 65535) 928 goto badataddr; 929 su->sat.sat_addr.s_net = val; 930 val = atoi (t); 931 if (val > 256) 932 goto badataddr; 933 su->sat.sat_addr.s_node = val; 934 rtm_addrs |= RTA_NETMASK; 935 return(forcehost || su->sat.sat_addr.s_node != 0); 936 937 case AF_LINK: 938 link_addr(s, &su->sdl); 939 return (1); 940 941 case AF_INET: 942 default: 943 break; 944 } 945 946 if (hpp == NULL) 947 hpp = &hp; 948 *hpp = NULL; 949 if (((val = inet_addr(s)) != INADDR_NONE) && 950 (which != RTA_DST || forcenet == 0)) { 951 su->sin.sin_addr.s_addr = val; 952 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 953 return (1); 954 else { 955 val = ntohl(val); 956 goto netdone; 957 } 958 } 959 if ((val = inet_network(s)) != INADDR_NONE || 960 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 961 netdone: 962 if (which == RTA_DST) 963 inet_makenetandmask(val, &su->sin); 964 return (0); 965 } 966 hp = gethostbyname(s); 967 if (hp) { 968 *hpp = hp; 969 su->sin.sin_family = hp->h_addrtype; 970 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 971 return (1); 972 } 973 errx(1, "bad value: %s", s); 974 } 975 976 #ifndef SMALL 977 int 978 x25_makemask() 979 { 980 char *cp; 981 982 if ((rtm_addrs & RTA_NETMASK) == 0) { 983 rtm_addrs |= RTA_NETMASK; 984 for (cp = (char *)&so_mask.sx25.x25_net; 985 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 986 *cp = -1; 987 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 988 } 989 return 0; 990 } 991 992 short ns_nullh[] = {0,0,0}; 993 short ns_bh[] = {-1,-1,-1}; 994 995 char * 996 ns_print(sns) 997 struct sockaddr_ns *sns; 998 { 999 struct ns_addr work; 1000 union { union ns_net net_e; u_long long_e; } net; 1001 u_short port; 1002 static char mybuf[50], cport[10], chost[25]; 1003 char *host = ""; 1004 char *p; 1005 u_char *q; 1006 1007 work = sns->sns_addr; 1008 port = ntohs(work.x_port); 1009 work.x_port = 0; 1010 net.net_e = work.x_net; 1011 if (ns_nullhost(work) && net.long_e == 0) { 1012 if (!port) 1013 return ("*.*"); 1014 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1015 return (mybuf); 1016 } 1017 1018 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1019 host = "any"; 1020 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1021 host = "*"; 1022 else { 1023 q = work.x_host.c_host; 1024 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1025 q[0], q[1], q[2], q[3], q[4], q[5]); 1026 for (p = chost; *p == '0' && p < chost + 12; p++) 1027 /* void */; 1028 host = p; 1029 } 1030 if (port) 1031 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1032 else 1033 *cport = 0; 1034 1035 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1036 (u_int32_t)ntohl(net.long_e), host, cport); 1037 return (mybuf); 1038 } 1039 1040 static void 1041 interfaces() 1042 { 1043 size_t needed; 1044 int mib[6]; 1045 char *buf, *lim, *next; 1046 struct rt_msghdr *rtm; 1047 1048 mib[0] = CTL_NET; 1049 mib[1] = PF_ROUTE; 1050 mib[2] = 0; /* protocol */ 1051 mib[3] = 0; /* wildcard address family */ 1052 mib[4] = NET_RT_IFLIST; 1053 mib[5] = 0; /* no flags */ 1054 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1055 err(1, "route-sysctl-estimate"); 1056 if ((buf = malloc(needed)) == NULL) 1057 err(1, "malloc"); 1058 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1059 err(1, "actual retrieval of interface table"); 1060 lim = buf + needed; 1061 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1062 rtm = (struct rt_msghdr *)next; 1063 print_rtmsg(rtm, rtm->rtm_msglen); 1064 } 1065 } 1066 1067 static void 1068 monitor() 1069 { 1070 int n; 1071 char msg[2048]; 1072 1073 verbose = 1; 1074 if (debugonly) { 1075 interfaces(); 1076 exit(0); 1077 } 1078 for(;;) { 1079 n = read(s, msg, 2048); 1080 (void) printf("got message of size %d\n", n); 1081 print_rtmsg((struct rt_msghdr *)msg, n); 1082 } 1083 } 1084 1085 #endif /* SMALL */ 1086 1087 1088 struct { 1089 struct rt_msghdr m_rtm; 1090 char m_space[512]; 1091 } m_rtmsg; 1092 1093 static int 1094 rtmsg(cmd, flags) 1095 int cmd, flags; 1096 { 1097 static int seq; 1098 int rlen; 1099 char *cp = m_rtmsg.m_space; 1100 int l; 1101 1102 #define NEXTADDR(w, u) \ 1103 if (rtm_addrs & (w)) {\ 1104 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1105 if (verbose) sodump(&(u),"u");\ 1106 } 1107 1108 errno = 0; 1109 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1110 if (cmd == 'a') 1111 cmd = RTM_ADD; 1112 else if (cmd == 'c') 1113 cmd = RTM_CHANGE; 1114 else if (cmd == 'g') { 1115 #ifdef SMALL 1116 return (-1); 1117 #else /* SMALL */ 1118 cmd = RTM_GET; 1119 if (so_ifp.sa.sa_family == 0) { 1120 so_ifp.sa.sa_family = AF_LINK; 1121 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1122 rtm_addrs |= RTA_IFP; 1123 } 1124 #endif /* SMALL */ 1125 } else 1126 cmd = RTM_DELETE; 1127 #define rtm m_rtmsg.m_rtm 1128 rtm.rtm_type = cmd; 1129 rtm.rtm_flags = flags; 1130 rtm.rtm_version = RTM_VERSION; 1131 rtm.rtm_seq = ++seq; 1132 rtm.rtm_addrs = rtm_addrs; 1133 rtm.rtm_rmx = rt_metrics; 1134 rtm.rtm_inits = rtm_inits; 1135 1136 if (rtm_addrs & RTA_NETMASK) 1137 mask_addr(); 1138 NEXTADDR(RTA_DST, so_dst); 1139 NEXTADDR(RTA_GATEWAY, so_gate); 1140 NEXTADDR(RTA_NETMASK, so_mask); 1141 NEXTADDR(RTA_GENMASK, so_genmask); 1142 NEXTADDR(RTA_IFP, so_ifp); 1143 NEXTADDR(RTA_IFA, so_ifa); 1144 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1145 if (verbose) 1146 print_rtmsg(&rtm, l); 1147 if (debugonly) 1148 return (0); 1149 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1150 perror("writing to routing socket"); 1151 return (-1); 1152 } 1153 #ifndef SMALL 1154 if (cmd == RTM_GET) { 1155 do { 1156 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1157 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1158 if (l < 0) 1159 err(1, "read from routing socket"); 1160 else 1161 print_getmsg(&rtm, l); 1162 } 1163 #endif /* SMALL */ 1164 #undef rtm 1165 return (0); 1166 } 1167 1168 static void 1169 mask_addr() 1170 { 1171 int olen = so_mask.sa.sa_len; 1172 char *cp1 = olen + (char *)&so_mask, *cp2; 1173 1174 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1175 if (*--cp1 != 0) { 1176 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1177 break; 1178 } 1179 if ((rtm_addrs & RTA_DST) == 0) 1180 return; 1181 switch (so_dst.sa.sa_family) { 1182 case AF_NS: 1183 case AF_INET: 1184 case AF_CCITT: 1185 case AF_APPLETALK: 1186 case 0: 1187 return; 1188 case AF_ISO: 1189 olen = MIN(so_dst.siso.siso_nlen, 1190 MAX(so_mask.sa.sa_len - 6, 0)); 1191 break; 1192 } 1193 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1194 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1195 while (cp2 > cp1) 1196 *--cp2 = 0; 1197 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1198 while (cp1 > so_dst.sa.sa_data) 1199 *--cp1 &= *--cp2; 1200 switch (so_dst.sa.sa_family) { 1201 case AF_ISO: 1202 so_dst.siso.siso_nlen = olen; 1203 break; 1204 } 1205 } 1206 1207 char *msgtypes[] = { 1208 "", 1209 "RTM_ADD: Add Route", 1210 "RTM_DELETE: Delete Route", 1211 "RTM_CHANGE: Change Metrics or flags", 1212 "RTM_GET: Report Metrics", 1213 "RTM_LOSING: Kernel Suspects Partitioning", 1214 "RTM_REDIRECT: Told to use different route", 1215 "RTM_MISS: Lookup failed on this address", 1216 "RTM_LOCK: fix specified metrics", 1217 "RTM_OLDADD: caused by SIOCADDRT", 1218 "RTM_OLDDEL: caused by SIOCDELRT", 1219 "RTM_RESOLVE: Route created by cloning", 1220 "RTM_NEWADDR: address being added to iface", 1221 "RTM_DELADDR: address being removed from iface", 1222 "RTM_IFINFO: iface status change", 1223 0, 1224 }; 1225 1226 char metricnames[] = 1227 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1228 char routeflags[] = 1229 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\017PROTO2\020PROTO1"; 1230 char ifnetflags[] = 1231 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1232 char addrnames[] = 1233 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1234 1235 static void 1236 print_rtmsg(rtm, msglen) 1237 struct rt_msghdr *rtm; 1238 int msglen; 1239 { 1240 struct if_msghdr *ifm; 1241 struct ifa_msghdr *ifam; 1242 1243 if (verbose == 0) 1244 return; 1245 if (rtm->rtm_version != RTM_VERSION) { 1246 (void) printf("routing message version %d not understood\n", 1247 rtm->rtm_version); 1248 return; 1249 } 1250 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1251 switch (rtm->rtm_type) { 1252 case RTM_IFINFO: 1253 ifm = (struct if_msghdr *)rtm; 1254 (void) printf("if# %d, flags:", ifm->ifm_index); 1255 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1256 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1257 break; 1258 case RTM_NEWADDR: 1259 case RTM_DELADDR: 1260 ifam = (struct ifa_msghdr *)rtm; 1261 (void) printf("metric %d, flags:", ifam->ifam_metric); 1262 bprintf(stdout, ifam->ifam_flags, routeflags); 1263 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1264 break; 1265 default: 1266 (void) printf("pid: %d, seq %d, errno %d, flags:", 1267 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1268 bprintf(stdout, rtm->rtm_flags, routeflags); 1269 pmsg_common(rtm); 1270 } 1271 } 1272 1273 #ifndef SMALL 1274 static void 1275 print_getmsg(rtm, msglen) 1276 struct rt_msghdr *rtm; 1277 int msglen; 1278 { 1279 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1280 struct sockaddr_dl *ifp = NULL; 1281 struct sockaddr *sa; 1282 char *cp; 1283 int i; 1284 1285 (void) printf(" route to: %s\n", 1286 routename((struct sockaddr *) &so_dst)); 1287 if (rtm->rtm_version != RTM_VERSION) { 1288 warnx("routing message version %d not understood", 1289 rtm->rtm_version); 1290 return; 1291 } 1292 if (rtm->rtm_msglen > msglen) { 1293 warnx("message length mismatch, in packet %d, returned %d\n", 1294 rtm->rtm_msglen, msglen); 1295 } 1296 if (rtm->rtm_errno) { 1297 warn("RTM_GET"); 1298 return; 1299 } 1300 cp = ((char *)(rtm + 1)); 1301 if (rtm->rtm_addrs) 1302 for (i = 1; i; i <<= 1) 1303 if (i & rtm->rtm_addrs) { 1304 sa = (struct sockaddr *)cp; 1305 switch (i) { 1306 case RTA_DST: 1307 dst = sa; 1308 break; 1309 case RTA_GATEWAY: 1310 gate = sa; 1311 break; 1312 case RTA_NETMASK: 1313 mask = sa; 1314 break; 1315 case RTA_IFP: 1316 if (sa->sa_family == AF_LINK && 1317 ((struct sockaddr_dl *)sa)->sdl_nlen) 1318 ifp = (struct sockaddr_dl *)sa; 1319 break; 1320 } 1321 ADVANCE(cp, sa); 1322 } 1323 if (dst && mask) 1324 mask->sa_family = dst->sa_family; /* XXX */ 1325 if (dst) 1326 (void)printf("destination: %s\n", routename(dst)); 1327 if (mask) { 1328 int savenflag = nflag; 1329 1330 nflag = 1; 1331 (void)printf(" mask: %s\n", routename(mask)); 1332 nflag = savenflag; 1333 } 1334 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1335 (void)printf(" gateway: %s\n", routename(gate)); 1336 if (ifp) 1337 (void)printf(" interface: %.*s\n", 1338 ifp->sdl_nlen, ifp->sdl_data); 1339 (void)printf(" flags: "); 1340 bprintf(stdout, rtm->rtm_flags, routeflags); 1341 1342 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1343 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1344 1345 (void) printf("\n%s\n", "\ 1346 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1347 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1348 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1349 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1350 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1351 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1352 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1353 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1354 if (rtm->rtm_rmx.rmx_expire) 1355 rtm->rtm_rmx.rmx_expire -= time(0); 1356 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1357 #undef lock 1358 #undef msec 1359 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1360 if (verbose) 1361 pmsg_common(rtm); 1362 else if (rtm->rtm_addrs &~ RTA_IGN) { 1363 (void) printf("sockaddrs: "); 1364 bprintf(stdout, rtm->rtm_addrs, addrnames); 1365 putchar('\n'); 1366 } 1367 #undef RTA_IGN 1368 } 1369 #endif /* SMALL */ 1370 1371 void 1372 pmsg_common(rtm) 1373 struct rt_msghdr *rtm; 1374 { 1375 (void) printf("\nlocks: "); 1376 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1377 (void) printf(" inits: "); 1378 bprintf(stdout, rtm->rtm_inits, metricnames); 1379 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1380 } 1381 1382 static void 1383 pmsg_addrs(cp, addrs) 1384 char *cp; 1385 int addrs; 1386 { 1387 struct sockaddr *sa; 1388 int i; 1389 1390 if (addrs == 0) 1391 return; 1392 (void) printf("\nsockaddrs: "); 1393 bprintf(stdout, addrs, addrnames); 1394 (void) putchar('\n'); 1395 for (i = 1; i; i <<= 1) 1396 if (i & addrs) { 1397 sa = (struct sockaddr *)cp; 1398 (void) printf(" %s", routename(sa)); 1399 ADVANCE(cp, sa); 1400 } 1401 (void) putchar('\n'); 1402 (void) fflush(stdout); 1403 } 1404 1405 static void 1406 bprintf(fp, b, s) 1407 FILE *fp; 1408 int b; 1409 u_char *s; 1410 { 1411 int i; 1412 int gotsome = 0; 1413 1414 if (b == 0) 1415 return; 1416 while ((i = *s++) != 0) { 1417 if (b & (1 << (i-1))) { 1418 if (gotsome == 0) 1419 i = '<'; 1420 else 1421 i = ','; 1422 (void) putc(i, fp); 1423 gotsome = 1; 1424 for (; (i = *s) > 32; s++) 1425 (void) putc(i, fp); 1426 } else 1427 while (*s > 32) 1428 s++; 1429 } 1430 if (gotsome) 1431 (void) putc('>', fp); 1432 } 1433 1434 static int 1435 keyword(cp) 1436 char *cp; 1437 { 1438 struct keytab *kt = keywords; 1439 1440 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1441 kt++; 1442 return kt->kt_i; 1443 } 1444 1445 static void 1446 sodump(su, which) 1447 sup su; 1448 char *which; 1449 { 1450 switch (su->sa.sa_family) { 1451 case AF_INET: 1452 (void) printf("%s: inet %s; ", 1453 which, inet_ntoa(su->sin.sin_addr)); 1454 break; 1455 case AF_APPLETALK: 1456 (void) printf("%s: atalk %d.%d; ", 1457 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1458 break; 1459 case AF_LINK: 1460 (void) printf("%s: link %s; ", 1461 which, link_ntoa(&su->sdl)); 1462 break; 1463 #ifndef SMALL 1464 case AF_ISO: 1465 (void) printf("%s: iso %s; ", 1466 which, iso_ntoa(&su->siso.siso_addr)); 1467 break; 1468 case AF_NS: 1469 (void) printf("%s: xns %s; ", 1470 which, ns_ntoa(su->sns.sns_addr)); 1471 break; 1472 #endif /* SMALL */ 1473 default: 1474 (void) printf("af %p: %s; ", 1475 which, any_ntoa(&su->sa)); 1476 } 1477 (void) fflush(stdout); 1478 } 1479 1480 /* States*/ 1481 #define VIRGIN 0 1482 #define GOTONE 1 1483 #define GOTTWO 2 1484 /* Inputs */ 1485 #define DIGIT (4*0) 1486 #define END (4*1) 1487 #define DELIM (4*2) 1488 1489 static void 1490 sockaddr(addr, sa) 1491 char *addr; 1492 struct sockaddr *sa; 1493 { 1494 char *cp = (char *)sa; 1495 int size = sa->sa_len; 1496 char *cplim = cp + size; 1497 int byte = 0, state = VIRGIN, new = 0; 1498 1499 (void) memset(cp, 0, size); 1500 cp++; 1501 do { 1502 if ((*addr >= '0') && (*addr <= '9')) { 1503 new = *addr - '0'; 1504 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1505 new = *addr - 'a' + 10; 1506 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1507 new = *addr - 'A' + 10; 1508 } else if (*addr == 0) 1509 state |= END; 1510 else 1511 state |= DELIM; 1512 addr++; 1513 switch (state /* | INPUT */) { 1514 case GOTTWO | DIGIT: 1515 *cp++ = byte; /*FALLTHROUGH*/ 1516 case VIRGIN | DIGIT: 1517 state = GOTONE; byte = new; continue; 1518 case GOTONE | DIGIT: 1519 state = GOTTWO; byte = new + (byte << 4); continue; 1520 default: /* | DELIM */ 1521 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1522 case GOTONE | END: 1523 case GOTTWO | END: 1524 *cp++ = byte; /* FALLTHROUGH */ 1525 case VIRGIN | END: 1526 break; 1527 } 1528 break; 1529 } while (cp < cplim); 1530 sa->sa_len = cp - (char *)sa; 1531 } 1532
Indexes created Fri Sep 26 08:10:20 GMT 2025