route.c revision 1.30
1 /* $NetBSD: route.c,v 1.30 1998/10/23 05:36:42 lukem 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 1.30 1998/10/23 05:36:42 lukem 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 static void flushroutes __P((int, char *[])); 91 #ifndef SMALL 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_dl sdl; 113 #ifndef SMALL 114 struct sockaddr_ns sns; 115 struct sockaddr_iso siso; 116 struct sockaddr_x25 sx25; 117 #endif /* SMALL */ 118 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 119 120 int pid, rtm_addrs; 121 int s; 122 int forcehost, forcenet, doflush, nflag, af, qflag, tflag; 123 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 124 int locking, lockrest, debugonly; 125 struct rt_metrics rt_metrics; 126 u_int32_t rtm_inits; 127 128 static void 129 usage(cp) 130 char *cp; 131 { 132 extern char *__progname; 133 if (cp) 134 warnx("botched keyword: %s", cp); 135 (void) fprintf(stderr, 136 "Usage: %s [ -fnqv ] cmd [[ -<qualifers> ] args ]\n", __progname); 137 exit(1); 138 /* NOTREACHED */ 139 } 140 141 #define ROUNDUP(a) \ 142 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(int32_t) - 1))) : sizeof(int32_t)) 143 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 144 145 int 146 main(argc, argv) 147 int argc; 148 char **argv; 149 { 150 int ch; 151 152 if (argc < 2) 153 usage(NULL); 154 155 while ((ch = getopt(argc, argv, "fnqvdt")) != -1) 156 switch(ch) { 157 case 'f': 158 doflush = 1; 159 break; 160 case 'n': 161 nflag = 1; 162 break; 163 case 'q': 164 qflag = 1; 165 break; 166 case 'v': 167 verbose = 1; 168 break; 169 case 't': 170 tflag = 1; 171 break; 172 case 'd': 173 debugonly = 1; 174 break; 175 case '?': 176 default: 177 usage(NULL); 178 } 179 argc -= optind; 180 argv += optind; 181 182 pid = getpid(); 183 if (tflag) 184 s = open("/dev/null", O_WRONLY, 0); 185 else 186 s = socket(PF_ROUTE, SOCK_RAW, 0); 187 if (s < 0) 188 err(1, "socket"); 189 190 if (*argv == NULL) { 191 if (doflush) 192 ch = K_FLUSH; 193 else 194 goto no_cmd; 195 } else 196 ch = keyword(*argv); 197 198 switch (ch) { 199 200 #ifndef SMALL 201 case K_GET: 202 #endif /* SMALL */ 203 case K_CHANGE: 204 case K_ADD: 205 case K_DELETE: 206 if (doflush) 207 flushroutes(1, argv); 208 newroute(argc, argv); 209 break; 210 211 case K_SHOW: 212 show(argc, argv); 213 break; 214 215 #ifndef SMALL 216 case K_MONITOR: 217 monitor(); 218 break; 219 220 #endif /* SMALL */ 221 case K_FLUSH: 222 flushroutes(argc, argv); 223 break; 224 225 no_cmd: 226 default: 227 usage(*argv); 228 return 1; 229 } 230 return 0; 231 } 232 233 /* 234 * Purge all entries in the routing tables not 235 * associated with network interfaces. 236 */ 237 static void 238 flushroutes(argc, argv) 239 int argc; 240 char *argv[]; 241 { 242 size_t needed; 243 int mib[6], rlen, seqno; 244 char *buf, *next, *lim; 245 struct rt_msghdr *rtm; 246 247 af = 0; 248 shutdown(s, 0); /* Don't want to read back our messages */ 249 if (argc > 1) { 250 argv++; 251 if (argc == 2 && **argv == '-') 252 switch (keyword(*argv + 1)) { 253 case K_INET: 254 af = AF_INET; 255 break; 256 case K_ATALK: 257 af = AF_APPLETALK; 258 break; 259 #ifndef SMALL 260 case K_XNS: 261 af = AF_NS; 262 break; 263 #endif /* SMALL */ 264 case K_LINK: 265 af = AF_LINK; 266 break; 267 #ifndef SMALL 268 case K_ISO: 269 case K_OSI: 270 af = AF_ISO; 271 break; 272 case K_X25: 273 af = AF_CCITT; 274 #endif /* SMALL */ 275 default: 276 goto bad; 277 } else 278 bad: usage(*argv); 279 } 280 mib[0] = CTL_NET; 281 mib[1] = PF_ROUTE; 282 mib[2] = 0; /* protocol */ 283 mib[3] = 0; /* wildcard address family */ 284 mib[4] = NET_RT_DUMP; 285 mib[5] = 0; /* no flags */ 286 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 287 err(1, "route-sysctl-estimate"); 288 if (needed == 0) 289 return; 290 if ((buf = malloc(needed)) == NULL) 291 err(1, "malloc"); 292 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 293 err(1, "actual retrieval of routing table"); 294 lim = buf + needed; 295 if (verbose) { 296 (void) printf("Examining routing table from sysctl\n"); 297 if (af) printf("(address family %s)\n", (*argv + 1)); 298 } 299 seqno = 0; /* ??? */ 300 for (next = buf; next < lim; next += rtm->rtm_msglen) { 301 rtm = (struct rt_msghdr *)next; 302 if (verbose) 303 print_rtmsg(rtm, rtm->rtm_msglen); 304 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 305 continue; 306 if (af) { 307 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 308 309 if (sa->sa_family != af) 310 continue; 311 } 312 if (debugonly) 313 continue; 314 rtm->rtm_type = RTM_DELETE; 315 rtm->rtm_seq = seqno; 316 rlen = write(s, next, rtm->rtm_msglen); 317 if (rlen < (int)rtm->rtm_msglen) { 318 warn("write to routing socket, got %d for rlen", rlen); 319 break; 320 } 321 seqno++; 322 if (qflag) 323 continue; 324 if (verbose) 325 print_rtmsg(rtm, rlen); 326 else { 327 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 328 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 329 routename(sa) : netname(sa)); 330 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 331 (void) printf("%-20.20s ", routename(sa)); 332 (void) printf("done\n"); 333 } 334 } 335 } 336 337 338 static char hexlist[] = "0123456789abcdef"; 339 340 static char * 341 any_ntoa(sa) 342 const struct sockaddr *sa; 343 { 344 static char obuf[64]; 345 const char *in; 346 char *out; 347 int len; 348 349 len = sa->sa_len; 350 in = sa->sa_data; 351 out = obuf; 352 353 do { 354 *out++ = hexlist[(*in >> 4) & 15]; 355 *out++ = hexlist[(*in++) & 15]; 356 *out++ = '.'; 357 } while (--len > 0); 358 out[-1] = '\0'; 359 return obuf; 360 } 361 362 363 char * 364 routename(sa) 365 struct sockaddr *sa; 366 { 367 char *cp; 368 static char line[50]; 369 struct hostent *hp; 370 static char domain[MAXHOSTNAMELEN + 1]; 371 static int first = 1; 372 struct in_addr in; 373 374 if (first) { 375 first = 0; 376 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 377 (cp = strchr(domain, '.'))) { 378 (void)strncpy(domain, cp + 1, sizeof(domain) - 1); 379 domain[sizeof(domain) - 1] = '\0'; 380 } else 381 domain[0] = 0; 382 } 383 384 if (sa->sa_len == 0) { 385 strncpy(line, "default", sizeof(line) - 1); 386 line[sizeof(line) - 1] = '\0'; 387 } else switch (sa->sa_family) { 388 389 case AF_INET: 390 in = ((struct sockaddr_in *)sa)->sin_addr; 391 392 cp = 0; 393 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 394 cp = "default"; 395 if (cp == 0 && !nflag) { 396 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 397 AF_INET); 398 if (hp) { 399 if ((cp = strchr(hp->h_name, '.')) && 400 !strcmp(cp + 1, domain)) 401 *cp = 0; 402 cp = hp->h_name; 403 } 404 } 405 if (cp) 406 (void)strncpy(line, cp, sizeof(line) - 1); 407 else 408 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 409 line[sizeof(line) - 1] = '\0'; 410 break; 411 412 case AF_LINK: 413 return (link_ntoa((struct sockaddr_dl *)sa)); 414 415 #ifndef SMALL 416 case AF_NS: 417 return (ns_print((struct sockaddr_ns *)sa)); 418 419 case AF_ISO: 420 (void)snprintf(line, sizeof line, "iso %s", 421 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 422 break; 423 #endif /* SMALL */ 424 425 case AF_APPLETALK: 426 (void) snprintf(line, sizeof(line), "atalk %d.%d", 427 ((struct sockaddr_at *)sa)->sat_addr.s_net, 428 ((struct sockaddr_at *)sa)->sat_addr.s_node); 429 break; 430 431 default: 432 (void)snprintf(line, sizeof line, "(%d) %s", 433 sa->sa_family, any_ntoa(sa)); 434 break; 435 436 } 437 return (line); 438 } 439 440 /* 441 * Return the name of the network whose address is given. 442 * The address is assumed to be that of a net or subnet, not a host. 443 */ 444 char * 445 netname(sa) 446 struct sockaddr *sa; 447 { 448 char *cp = 0; 449 static char line[50]; 450 struct netent *np = 0; 451 u_int32_t net, mask; 452 u_int32_t i; 453 int subnetshift; 454 struct in_addr in; 455 456 switch (sa->sa_family) { 457 458 case AF_INET: 459 in = ((struct sockaddr_in *)sa)->sin_addr; 460 i = ntohl(in.s_addr); 461 if (i == 0) 462 cp = "default"; 463 else if (!nflag) { 464 if (IN_CLASSA(i)) { 465 mask = IN_CLASSA_NET; 466 subnetshift = 8; 467 } else if (IN_CLASSB(i)) { 468 mask = IN_CLASSB_NET; 469 subnetshift = 8; 470 } else { 471 mask = IN_CLASSC_NET; 472 subnetshift = 4; 473 } 474 /* 475 * If there are more bits than the standard mask 476 * would suggest, subnets must be in use. 477 * Guess at the subnet mask, assuming reasonable 478 * width subnet fields. 479 */ 480 while (i &~ mask) 481 mask = (int32_t)mask >> subnetshift; 482 net = i & mask; 483 while ((mask & 1) == 0) 484 mask >>= 1, net >>= 1; 485 np = getnetbyaddr(net, AF_INET); 486 if (np) 487 cp = np->n_name; 488 } 489 if (cp) { 490 (void)strncpy(line, cp, sizeof(line) - 1); 491 line[sizeof(line) - 1] = '\0'; 492 } else { 493 #if 0 /* XXX - This is silly... */ 494 #define C(x) ((x) & 0xff) 495 if ((i & 0xffffff) == 0) 496 (void)snprintf(line, sizeof line, "%u", 497 C(i >> 24)); 498 else if ((i & 0xffff) == 0) 499 (void)snprintf(line, sizeof line, "%u.%u", 500 C(i >> 24), C(i >> 16)); 501 else if ((i & 0xff) == 0) 502 (void)snprintf(line, sizeof line, "%u.%u.%u", 503 C(i >> 24), C(i >> 16), C(i >> 8)); 504 else 505 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 506 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 507 #undef C 508 #else /* XXX */ 509 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 510 #endif /* XXX */ 511 } 512 break; 513 514 case AF_LINK: 515 return (link_ntoa((struct sockaddr_dl *)sa)); 516 517 #ifndef SMALL 518 case AF_NS: 519 return (ns_print((struct sockaddr_ns *)sa)); 520 521 case AF_ISO: 522 (void)snprintf(line, sizeof line, "iso %s", 523 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 524 break; 525 #endif /* SMALL */ 526 527 case AF_APPLETALK: 528 (void) snprintf(line, sizeof(line), "atalk %d.%d", 529 ((struct sockaddr_at *)sa)->sat_addr.s_net, 530 ((struct sockaddr_at *)sa)->sat_addr.s_node); 531 break; 532 533 default: 534 (void)snprintf(line, sizeof line, "af %d: %s", 535 sa->sa_family, any_ntoa(sa)); 536 break; 537 } 538 return (line); 539 } 540 541 static void 542 set_metric(value, key) 543 char *value; 544 int key; 545 { 546 int flag = 0; 547 u_long noval, *valp = &noval; 548 549 switch (key) { 550 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 551 caseof(K_MTU, RTV_MTU, rmx_mtu); 552 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 553 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 554 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 555 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 556 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 557 caseof(K_RTT, RTV_RTT, rmx_rtt); 558 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 559 } 560 rtm_inits |= flag; 561 if (lockrest || locking) 562 rt_metrics.rmx_locks |= flag; 563 if (locking) 564 locking = 0; 565 *valp = atoi(value); 566 } 567 568 static void 569 newroute(argc, argv) 570 int argc; 571 char **argv; 572 { 573 char *cmd, *dest = "", *gateway = ""; 574 const char *err; 575 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 576 int key; 577 struct hostent *hp = 0; 578 579 cmd = argv[0]; 580 af = 0; 581 if (*cmd != 'g') 582 shutdown(s, 0); /* Don't want to read back our messages */ 583 while (--argc > 0) { 584 if (**(++argv)== '-') { 585 switch (key = keyword(1 + *argv)) { 586 587 case K_SA: 588 af = PF_ROUTE; 589 aflen = sizeof(union sockunion); 590 break; 591 592 case K_ATALK: 593 af = AF_APPLETALK; 594 aflen = sizeof(struct sockaddr_at); 595 break; 596 597 case K_INET: 598 af = AF_INET; 599 aflen = sizeof(struct sockaddr_in); 600 break; 601 602 case K_LINK: 603 af = AF_LINK; 604 aflen = sizeof(struct sockaddr_dl); 605 break; 606 607 #ifndef SMALL 608 case K_OSI: 609 case K_ISO: 610 af = AF_ISO; 611 aflen = sizeof(struct sockaddr_iso); 612 break; 613 614 case K_X25: 615 af = AF_CCITT; 616 aflen = sizeof(struct sockaddr_x25); 617 break; 618 619 case K_XNS: 620 af = AF_NS; 621 aflen = sizeof(struct sockaddr_ns); 622 break; 623 #endif /* SMALL */ 624 625 case K_IFACE: 626 case K_INTERFACE: 627 iflag++; 628 break; 629 case K_NOSTATIC: 630 flags &= ~RTF_STATIC; 631 break; 632 case K_LLINFO: 633 flags |= RTF_LLINFO; 634 break; 635 case K_LOCK: 636 locking = 1; 637 break; 638 case K_LOCKREST: 639 lockrest = 1; 640 break; 641 case K_HOST: 642 forcehost++; 643 break; 644 case K_REJECT: 645 flags |= RTF_REJECT; 646 break; 647 case K_BLACKHOLE: 648 flags |= RTF_BLACKHOLE; 649 break; 650 case K_PROTO1: 651 flags |= RTF_PROTO1; 652 break; 653 case K_PROTO2: 654 flags |= RTF_PROTO2; 655 break; 656 case K_CLONING: 657 flags |= RTF_CLONING; 658 break; 659 case K_XRESOLVE: 660 flags |= RTF_XRESOLVE; 661 break; 662 case K_STATIC: 663 flags |= RTF_STATIC; 664 break; 665 case K_IFA: 666 if (!--argc) 667 usage(1+*argv); 668 (void) getaddr(RTA_IFA, *++argv, 0); 669 break; 670 case K_IFP: 671 if (!--argc) 672 usage(1+*argv); 673 (void) getaddr(RTA_IFP, *++argv, 0); 674 break; 675 case K_GENMASK: 676 if (!--argc) 677 usage(1+*argv); 678 (void) getaddr(RTA_GENMASK, *++argv, 0); 679 break; 680 case K_GATEWAY: 681 if (!--argc) 682 usage(1+*argv); 683 (void) getaddr(RTA_GATEWAY, *++argv, 0); 684 break; 685 case K_DST: 686 if (!--argc) 687 usage(1+*argv); 688 ishost = getaddr(RTA_DST, *++argv, &hp); 689 dest = *argv; 690 break; 691 case K_NETMASK: 692 if (!--argc) 693 usage(1+*argv); 694 (void) getaddr(RTA_NETMASK, *++argv, 0); 695 /* FALLTHROUGH */ 696 case K_NET: 697 forcenet++; 698 break; 699 case K_MTU: 700 case K_HOPCOUNT: 701 case K_EXPIRE: 702 case K_RECVPIPE: 703 case K_SENDPIPE: 704 case K_SSTHRESH: 705 case K_RTT: 706 case K_RTTVAR: 707 if (!--argc) 708 usage(1+*argv); 709 set_metric(*++argv, key); 710 break; 711 default: 712 usage(1+*argv); 713 } 714 } else { 715 if ((rtm_addrs & RTA_DST) == 0) { 716 dest = *argv; 717 ishost = getaddr(RTA_DST, *argv, &hp); 718 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 719 gateway = *argv; 720 (void) getaddr(RTA_GATEWAY, *argv, &hp); 721 } else { 722 int ret = atoi(*argv); 723 724 if (ret == 0) { 725 if (!qflag && strcmp(*argv, "0") == 0) 726 warnx("%s, %s", 727 "old usage of trailing 0", 728 "assuming route to if"); 729 else 730 usage((char *)NULL); 731 iflag = 1; 732 continue; 733 } else if (ret > 0 && ret < 10) { 734 if (!qflag) { 735 warnx("%s, %s", 736 "old usage of trailing digit", 737 "assuming route via gateway"); 738 } 739 iflag = 0; 740 continue; 741 } 742 (void) getaddr(RTA_NETMASK, *argv, 0); 743 } 744 } 745 } 746 if (forcehost) 747 ishost = 1; 748 if (forcenet) 749 ishost = 0; 750 flags |= RTF_UP; 751 if (ishost) 752 flags |= RTF_HOST; 753 if (iflag == 0) 754 flags |= RTF_GATEWAY; 755 for (attempts = 1; ; attempts++) { 756 errno = 0; 757 if ((ret = rtmsg(*cmd, flags)) == 0) 758 break; 759 if (errno != ENETUNREACH && errno != ESRCH) 760 break; 761 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 762 hp->h_addr_list++; 763 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 764 hp->h_length); 765 } else 766 break; 767 } 768 if (*cmd == 'g') 769 exit(0); 770 oerrno = errno; 771 if (!qflag) { 772 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 773 if (*gateway) { 774 (void) printf(": gateway %s", gateway); 775 if (attempts > 1 && ret == 0 && af == AF_INET) 776 (void) printf(" (%s)", 777 inet_ntoa(((struct sockaddr_in *) 778 &route.rt_gateway)->sin_addr)); 779 } 780 if (ret == 0) 781 (void) printf("\n"); 782 } 783 if (ret != 0) { 784 switch (oerrno) { 785 case ESRCH: 786 err = "not in table"; 787 break; 788 case EBUSY: 789 err = "entry in use"; 790 break; 791 case ENOBUFS: 792 err = "routing table overflow"; 793 break; 794 default: 795 err = strerror(oerrno); 796 break; 797 } 798 (void) printf(": %s\n", err); 799 } 800 } 801 802 static void 803 inet_makenetandmask(net, sin) 804 u_int32_t net; 805 struct sockaddr_in *sin; 806 { 807 u_int32_t addr, mask = 0; 808 char *cp; 809 810 rtm_addrs |= RTA_NETMASK; 811 if (net == 0) 812 mask = addr = 0; 813 else if (net < 128) { 814 addr = net << IN_CLASSA_NSHIFT; 815 mask = IN_CLASSA_NET; 816 } else if (net < 65536) { 817 addr = net << IN_CLASSB_NSHIFT; 818 mask = IN_CLASSB_NET; 819 } else if (net < 16777216L) { 820 addr = net << IN_CLASSC_NSHIFT; 821 mask = IN_CLASSC_NET; 822 } else { 823 addr = net; 824 if ((addr & IN_CLASSA_HOST) == 0) 825 mask = IN_CLASSA_NET; 826 else if ((addr & IN_CLASSB_HOST) == 0) 827 mask = IN_CLASSB_NET; 828 else if ((addr & IN_CLASSC_HOST) == 0) 829 mask = IN_CLASSC_NET; 830 else 831 mask = -1; 832 } 833 sin->sin_addr.s_addr = htonl(addr); 834 sin = &so_mask.sin; 835 sin->sin_addr.s_addr = htonl(mask); 836 sin->sin_len = 0; 837 sin->sin_family = 0; 838 cp = (char *)(&sin->sin_addr + 1); 839 while (*--cp == 0 && cp > (char *)sin) 840 ; 841 sin->sin_len = 1 + cp - (char *)sin; 842 } 843 844 /* 845 * Interpret an argument as a network address of some kind, 846 * returning 1 if a host address, 0 if a network address. 847 */ 848 static int 849 getaddr(which, s, hpp) 850 int which; 851 char *s; 852 struct hostent **hpp; 853 { 854 sup su; 855 struct hostent *hp; 856 struct netent *np; 857 u_int32_t val; 858 char *t; 859 860 if (af == 0) { 861 af = AF_INET; 862 aflen = sizeof(struct sockaddr_in); 863 } 864 rtm_addrs |= which; 865 switch (which) { 866 case RTA_DST: 867 su = &so_dst; 868 su->sa.sa_family = af; 869 break; 870 case RTA_GATEWAY: 871 su = &so_gate; 872 su->sa.sa_family = af; 873 break; 874 case RTA_NETMASK: 875 su = &so_mask; 876 break; 877 case RTA_GENMASK: 878 su = &so_genmask; 879 break; 880 case RTA_IFP: 881 su = &so_ifp; 882 su->sa.sa_family = af; 883 break; 884 case RTA_IFA: 885 su = &so_ifa; 886 su->sa.sa_family = af; 887 break; 888 default: 889 su = NULL; 890 usage("Internal Error"); 891 /*NOTREACHED*/ 892 } 893 su->sa.sa_len = aflen; 894 if (strcmp(s, "default") == 0) { 895 switch (which) { 896 case RTA_DST: 897 forcenet++; 898 (void) getaddr(RTA_NETMASK, s, 0); 899 break; 900 case RTA_NETMASK: 901 case RTA_GENMASK: 902 su->sa.sa_len = 0; 903 } 904 return (0); 905 } 906 switch (af) { 907 #ifndef SMALL 908 case AF_NS: 909 if (which == RTA_DST) { 910 extern short ns_bh[3]; 911 struct sockaddr_ns *sms = &(so_mask.sns); 912 memset(sms, 0, sizeof(*sms)); 913 sms->sns_family = 0; 914 sms->sns_len = 6; 915 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 916 rtm_addrs |= RTA_NETMASK; 917 } 918 su->sns.sns_addr = ns_addr(s); 919 return (!ns_nullhost(su->sns.sns_addr)); 920 921 case AF_OSI: 922 su->siso.siso_addr = *iso_addr(s); 923 if (which == RTA_NETMASK || which == RTA_GENMASK) { 924 char *cp = (char *)TSEL(&su->siso); 925 su->siso.siso_nlen = 0; 926 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 927 su->siso.siso_len = 1 + cp - (char *)su; 928 } 929 return (1); 930 931 case AF_CCITT: 932 ccitt_addr(s, &su->sx25); 933 return (which == RTA_DST ? x25_makemask() : 1); 934 #endif /* SMALL */ 935 936 case PF_ROUTE: 937 su->sa.sa_len = sizeof(*su); 938 sockaddr(s, &su->sa); 939 return (1); 940 941 case AF_APPLETALK: 942 t = strchr (s, '.'); 943 if (!t) { 944 badataddr: 945 errx(1, "bad address: %s", s); 946 } 947 val = atoi (s); 948 if (val > 65535) 949 goto badataddr; 950 su->sat.sat_addr.s_net = val; 951 val = atoi (t); 952 if (val > 256) 953 goto badataddr; 954 su->sat.sat_addr.s_node = val; 955 rtm_addrs |= RTA_NETMASK; 956 return(forcehost || su->sat.sat_addr.s_node != 0); 957 958 case AF_LINK: 959 link_addr(s, &su->sdl); 960 return (1); 961 962 case AF_INET: 963 default: 964 break; 965 } 966 967 if (hpp == NULL) 968 hpp = &hp; 969 *hpp = NULL; 970 if (((val = inet_addr(s)) != INADDR_NONE) && 971 (which != RTA_DST || forcenet == 0)) { 972 su->sin.sin_addr.s_addr = val; 973 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 974 return (1); 975 else { 976 val = ntohl(val); 977 goto netdone; 978 } 979 } 980 if ((val = inet_network(s)) != INADDR_NONE || 981 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 982 netdone: 983 if (which == RTA_DST) 984 inet_makenetandmask(val, &su->sin); 985 return (0); 986 } 987 hp = gethostbyname(s); 988 if (hp) { 989 *hpp = hp; 990 su->sin.sin_family = hp->h_addrtype; 991 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 992 return (1); 993 } 994 errx(1, "bad value: %s", s); 995 } 996 997 #ifndef SMALL 998 int 999 x25_makemask() 1000 { 1001 char *cp; 1002 1003 if ((rtm_addrs & RTA_NETMASK) == 0) { 1004 rtm_addrs |= RTA_NETMASK; 1005 for (cp = (char *)&so_mask.sx25.x25_net; 1006 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1007 *cp = -1; 1008 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1009 } 1010 return 0; 1011 } 1012 1013 short ns_nullh[] = {0,0,0}; 1014 short ns_bh[] = {-1,-1,-1}; 1015 1016 char * 1017 ns_print(sns) 1018 struct sockaddr_ns *sns; 1019 { 1020 struct ns_addr work; 1021 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1022 u_short port; 1023 static char mybuf[50], cport[10], chost[25]; 1024 char *host = ""; 1025 char *p; 1026 u_char *q; 1027 1028 work = sns->sns_addr; 1029 port = ntohs(work.x_port); 1030 work.x_port = 0; 1031 net.net_e = work.x_net; 1032 if (ns_nullhost(work) && net.int32_t_e == 0) { 1033 if (!port) 1034 return ("*.*"); 1035 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1036 return (mybuf); 1037 } 1038 1039 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1040 host = "any"; 1041 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1042 host = "*"; 1043 else { 1044 q = work.x_host.c_host; 1045 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1046 q[0], q[1], q[2], q[3], q[4], q[5]); 1047 for (p = chost; *p == '0' && p < chost + 12; p++) 1048 /* void */; 1049 host = p; 1050 } 1051 if (port) 1052 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1053 else 1054 *cport = 0; 1055 1056 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1057 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1058 return (mybuf); 1059 } 1060 1061 static void 1062 interfaces() 1063 { 1064 size_t needed; 1065 int mib[6]; 1066 char *buf, *lim, *next; 1067 struct rt_msghdr *rtm; 1068 1069 mib[0] = CTL_NET; 1070 mib[1] = PF_ROUTE; 1071 mib[2] = 0; /* protocol */ 1072 mib[3] = 0; /* wildcard address family */ 1073 mib[4] = NET_RT_IFLIST; 1074 mib[5] = 0; /* no flags */ 1075 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1076 err(1, "route-sysctl-estimate"); 1077 if ((buf = malloc(needed)) == NULL) 1078 err(1, "malloc"); 1079 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1080 err(1, "actual retrieval of interface table"); 1081 lim = buf + needed; 1082 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1083 rtm = (struct rt_msghdr *)next; 1084 print_rtmsg(rtm, rtm->rtm_msglen); 1085 } 1086 } 1087 1088 static void 1089 monitor() 1090 { 1091 int n; 1092 char msg[2048]; 1093 1094 verbose = 1; 1095 if (debugonly) { 1096 interfaces(); 1097 exit(0); 1098 } 1099 for(;;) { 1100 n = read(s, msg, 2048); 1101 (void) printf("got message of size %d\n", n); 1102 print_rtmsg((struct rt_msghdr *)msg, n); 1103 } 1104 } 1105 1106 #endif /* SMALL */ 1107 1108 1109 struct { 1110 struct rt_msghdr m_rtm; 1111 char m_space[512]; 1112 } m_rtmsg; 1113 1114 static int 1115 rtmsg(cmd, flags) 1116 int cmd, flags; 1117 { 1118 static int seq; 1119 int rlen; 1120 char *cp = m_rtmsg.m_space; 1121 int l; 1122 1123 #define NEXTADDR(w, u) \ 1124 if (rtm_addrs & (w)) {\ 1125 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1126 if (verbose) sodump(&(u),"u");\ 1127 } 1128 1129 errno = 0; 1130 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1131 if (cmd == 'a') 1132 cmd = RTM_ADD; 1133 else if (cmd == 'c') 1134 cmd = RTM_CHANGE; 1135 else if (cmd == 'g') { 1136 #ifdef SMALL 1137 return (-1); 1138 #else /* SMALL */ 1139 cmd = RTM_GET; 1140 if (so_ifp.sa.sa_family == 0) { 1141 so_ifp.sa.sa_family = AF_LINK; 1142 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1143 rtm_addrs |= RTA_IFP; 1144 } 1145 #endif /* SMALL */ 1146 } else 1147 cmd = RTM_DELETE; 1148 #define rtm m_rtmsg.m_rtm 1149 rtm.rtm_type = cmd; 1150 rtm.rtm_flags = flags; 1151 rtm.rtm_version = RTM_VERSION; 1152 rtm.rtm_seq = ++seq; 1153 rtm.rtm_addrs = rtm_addrs; 1154 rtm.rtm_rmx = rt_metrics; 1155 rtm.rtm_inits = rtm_inits; 1156 1157 if (rtm_addrs & RTA_NETMASK) 1158 mask_addr(); 1159 NEXTADDR(RTA_DST, so_dst); 1160 NEXTADDR(RTA_GATEWAY, so_gate); 1161 NEXTADDR(RTA_NETMASK, so_mask); 1162 NEXTADDR(RTA_GENMASK, so_genmask); 1163 NEXTADDR(RTA_IFP, so_ifp); 1164 NEXTADDR(RTA_IFA, so_ifa); 1165 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1166 if (verbose) 1167 print_rtmsg(&rtm, l); 1168 if (debugonly) 1169 return (0); 1170 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1171 perror("writing to routing socket"); 1172 return (-1); 1173 } 1174 #ifndef SMALL 1175 if (cmd == RTM_GET) { 1176 do { 1177 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1178 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1179 if (l < 0) 1180 err(1, "read from routing socket"); 1181 else 1182 print_getmsg(&rtm, l); 1183 } 1184 #endif /* SMALL */ 1185 #undef rtm 1186 return (0); 1187 } 1188 1189 static void 1190 mask_addr() 1191 { 1192 int olen = so_mask.sa.sa_len; 1193 char *cp1 = olen + (char *)&so_mask, *cp2; 1194 1195 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1196 if (*--cp1 != 0) { 1197 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1198 break; 1199 } 1200 if ((rtm_addrs & RTA_DST) == 0) 1201 return; 1202 switch (so_dst.sa.sa_family) { 1203 case AF_INET: 1204 case AF_APPLETALK: 1205 #ifndef SMALL 1206 case AF_NS: 1207 case AF_CCITT: 1208 #endif /* SMALL */ 1209 case 0: 1210 return; 1211 #ifndef SMALL 1212 case AF_ISO: 1213 olen = MIN(so_dst.siso.siso_nlen, 1214 MAX(so_mask.sa.sa_len - 6, 0)); 1215 break; 1216 #endif /* SMALL */ 1217 } 1218 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1219 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1220 while (cp2 > cp1) 1221 *--cp2 = 0; 1222 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1223 while (cp1 > so_dst.sa.sa_data) 1224 *--cp1 &= *--cp2; 1225 #ifndef SMALL 1226 switch (so_dst.sa.sa_family) { 1227 case AF_ISO: 1228 so_dst.siso.siso_nlen = olen; 1229 break; 1230 } 1231 #endif /* SMALL */ 1232 } 1233 1234 char *msgtypes[] = { 1235 "", 1236 "RTM_ADD: Add Route", 1237 "RTM_DELETE: Delete Route", 1238 "RTM_CHANGE: Change Metrics or flags", 1239 "RTM_GET: Report Metrics", 1240 "RTM_LOSING: Kernel Suspects Partitioning", 1241 "RTM_REDIRECT: Told to use different route", 1242 "RTM_MISS: Lookup failed on this address", 1243 "RTM_LOCK: fix specified metrics", 1244 "RTM_OLDADD: caused by SIOCADDRT", 1245 "RTM_OLDDEL: caused by SIOCDELRT", 1246 "RTM_RESOLVE: Route created by cloning", 1247 "RTM_NEWADDR: address being added to iface", 1248 "RTM_DELADDR: address being removed from iface", 1249 "RTM_IFINFO: iface status change", 1250 0, 1251 }; 1252 1253 char metricnames[] = 1254 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1255 char routeflags[] = 1256 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\017PROTO2\020PROTO1"; 1257 char ifnetflags[] = 1258 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1259 char addrnames[] = 1260 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1261 1262 static void 1263 print_rtmsg(rtm, msglen) 1264 struct rt_msghdr *rtm; 1265 int msglen; 1266 { 1267 struct if_msghdr *ifm; 1268 struct ifa_msghdr *ifam; 1269 1270 if (verbose == 0) 1271 return; 1272 if (rtm->rtm_version != RTM_VERSION) { 1273 (void) printf("routing message version %d not understood\n", 1274 rtm->rtm_version); 1275 return; 1276 } 1277 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1278 switch (rtm->rtm_type) { 1279 case RTM_IFINFO: 1280 ifm = (struct if_msghdr *)rtm; 1281 (void) printf("if# %d, flags:", ifm->ifm_index); 1282 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1283 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1284 break; 1285 case RTM_NEWADDR: 1286 case RTM_DELADDR: 1287 ifam = (struct ifa_msghdr *)rtm; 1288 (void) printf("metric %d, flags:", ifam->ifam_metric); 1289 bprintf(stdout, ifam->ifam_flags, routeflags); 1290 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1291 break; 1292 default: 1293 (void) printf("pid: %d, seq %d, errno %d, flags:", 1294 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1295 bprintf(stdout, rtm->rtm_flags, routeflags); 1296 pmsg_common(rtm); 1297 } 1298 } 1299 1300 #ifndef SMALL 1301 static void 1302 print_getmsg(rtm, msglen) 1303 struct rt_msghdr *rtm; 1304 int msglen; 1305 { 1306 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1307 struct sockaddr_dl *ifp = NULL; 1308 struct sockaddr *sa; 1309 char *cp; 1310 int i; 1311 1312 (void) printf(" route to: %s\n", 1313 routename((struct sockaddr *) &so_dst)); 1314 if (rtm->rtm_version != RTM_VERSION) { 1315 warnx("routing message version %d not understood", 1316 rtm->rtm_version); 1317 return; 1318 } 1319 if (rtm->rtm_msglen > msglen) { 1320 warnx("message length mismatch, in packet %d, returned %d\n", 1321 rtm->rtm_msglen, msglen); 1322 } 1323 if (rtm->rtm_errno) { 1324 warn("RTM_GET"); 1325 return; 1326 } 1327 cp = ((char *)(rtm + 1)); 1328 if (rtm->rtm_addrs) 1329 for (i = 1; i; i <<= 1) 1330 if (i & rtm->rtm_addrs) { 1331 sa = (struct sockaddr *)cp; 1332 switch (i) { 1333 case RTA_DST: 1334 dst = sa; 1335 break; 1336 case RTA_GATEWAY: 1337 gate = sa; 1338 break; 1339 case RTA_NETMASK: 1340 mask = sa; 1341 break; 1342 case RTA_IFP: 1343 if (sa->sa_family == AF_LINK && 1344 ((struct sockaddr_dl *)sa)->sdl_nlen) 1345 ifp = (struct sockaddr_dl *)sa; 1346 break; 1347 } 1348 ADVANCE(cp, sa); 1349 } 1350 if (dst && mask) 1351 mask->sa_family = dst->sa_family; /* XXX */ 1352 if (dst) 1353 (void)printf("destination: %s\n", routename(dst)); 1354 if (mask) { 1355 int savenflag = nflag; 1356 1357 nflag = 1; 1358 (void)printf(" mask: %s\n", routename(mask)); 1359 nflag = savenflag; 1360 } 1361 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1362 (void)printf(" gateway: %s\n", routename(gate)); 1363 if (ifp) 1364 (void)printf(" interface: %.*s\n", 1365 ifp->sdl_nlen, ifp->sdl_data); 1366 (void)printf(" flags: "); 1367 bprintf(stdout, rtm->rtm_flags, routeflags); 1368 1369 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1370 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1371 1372 (void) printf("\n%s\n", "\ 1373 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1374 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1375 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1376 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1377 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1378 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1379 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1380 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1381 if (rtm->rtm_rmx.rmx_expire) 1382 rtm->rtm_rmx.rmx_expire -= time(0); 1383 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1384 #undef lock 1385 #undef msec 1386 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1387 if (verbose) 1388 pmsg_common(rtm); 1389 else if (rtm->rtm_addrs &~ RTA_IGN) { 1390 (void) printf("sockaddrs: "); 1391 bprintf(stdout, rtm->rtm_addrs, addrnames); 1392 putchar('\n'); 1393 } 1394 #undef RTA_IGN 1395 } 1396 #endif /* SMALL */ 1397 1398 void 1399 pmsg_common(rtm) 1400 struct rt_msghdr *rtm; 1401 { 1402 (void) printf("\nlocks: "); 1403 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1404 (void) printf(" inits: "); 1405 bprintf(stdout, rtm->rtm_inits, metricnames); 1406 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1407 } 1408 1409 static void 1410 pmsg_addrs(cp, addrs) 1411 char *cp; 1412 int addrs; 1413 { 1414 struct sockaddr *sa; 1415 int i; 1416 1417 if (addrs == 0) 1418 return; 1419 (void) printf("\nsockaddrs: "); 1420 bprintf(stdout, addrs, addrnames); 1421 (void) putchar('\n'); 1422 for (i = 1; i; i <<= 1) 1423 if (i & addrs) { 1424 sa = (struct sockaddr *)cp; 1425 (void) printf(" %s", routename(sa)); 1426 ADVANCE(cp, sa); 1427 } 1428 (void) putchar('\n'); 1429 (void) fflush(stdout); 1430 } 1431 1432 static void 1433 bprintf(fp, b, s) 1434 FILE *fp; 1435 int b; 1436 u_char *s; 1437 { 1438 int i; 1439 int gotsome = 0; 1440 1441 if (b == 0) 1442 return; 1443 while ((i = *s++) != 0) { 1444 if (b & (1 << (i-1))) { 1445 if (gotsome == 0) 1446 i = '<'; 1447 else 1448 i = ','; 1449 (void) putc(i, fp); 1450 gotsome = 1; 1451 for (; (i = *s) > 32; s++) 1452 (void) putc(i, fp); 1453 } else 1454 while (*s > 32) 1455 s++; 1456 } 1457 if (gotsome) 1458 (void) putc('>', fp); 1459 } 1460 1461 static int 1462 keyword(cp) 1463 char *cp; 1464 { 1465 struct keytab *kt = keywords; 1466 1467 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1468 kt++; 1469 return kt->kt_i; 1470 } 1471 1472 static void 1473 sodump(su, which) 1474 sup su; 1475 char *which; 1476 { 1477 switch (su->sa.sa_family) { 1478 case AF_INET: 1479 (void) printf("%s: inet %s; ", 1480 which, inet_ntoa(su->sin.sin_addr)); 1481 break; 1482 case AF_APPLETALK: 1483 (void) printf("%s: atalk %d.%d; ", 1484 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1485 break; 1486 case AF_LINK: 1487 (void) printf("%s: link %s; ", 1488 which, link_ntoa(&su->sdl)); 1489 break; 1490 #ifndef SMALL 1491 case AF_ISO: 1492 (void) printf("%s: iso %s; ", 1493 which, iso_ntoa(&su->siso.siso_addr)); 1494 break; 1495 case AF_NS: 1496 (void) printf("%s: xns %s; ", 1497 which, ns_ntoa(su->sns.sns_addr)); 1498 break; 1499 #endif /* SMALL */ 1500 default: 1501 (void) printf("af %p: %s; ", 1502 which, any_ntoa(&su->sa)); 1503 } 1504 (void) fflush(stdout); 1505 } 1506 1507 /* States*/ 1508 #define VIRGIN 0 1509 #define GOTONE 1 1510 #define GOTTWO 2 1511 /* Inputs */ 1512 #define DIGIT (4*0) 1513 #define END (4*1) 1514 #define DELIM (4*2) 1515 1516 static void 1517 sockaddr(addr, sa) 1518 char *addr; 1519 struct sockaddr *sa; 1520 { 1521 char *cp = (char *)sa; 1522 int size = sa->sa_len; 1523 char *cplim = cp + size; 1524 int byte = 0, state = VIRGIN, new = 0; 1525 1526 (void) memset(cp, 0, size); 1527 cp++; 1528 do { 1529 if ((*addr >= '0') && (*addr <= '9')) { 1530 new = *addr - '0'; 1531 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1532 new = *addr - 'a' + 10; 1533 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1534 new = *addr - 'A' + 10; 1535 } else if (*addr == 0) 1536 state |= END; 1537 else 1538 state |= DELIM; 1539 addr++; 1540 switch (state /* | INPUT */) { 1541 case GOTTWO | DIGIT: 1542 *cp++ = byte; /*FALLTHROUGH*/ 1543 case VIRGIN | DIGIT: 1544 state = GOTONE; byte = new; continue; 1545 case GOTONE | DIGIT: 1546 state = GOTTWO; byte = new + (byte << 4); continue; 1547 default: /* | DELIM */ 1548 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1549 case GOTONE | END: 1550 case GOTTWO | END: 1551 *cp++ = byte; /* FALLTHROUGH */ 1552 case VIRGIN | END: 1553 break; 1554 } 1555 break; 1556 } while (cp < cplim); 1557 sa->sa_len = cp - (char *)sa; 1558 } 1559
Indexes created Mon Sep 29 03:10:08 GMT 2025