route.c revision 1.32
1 /* $NetBSD: route.c,v 1.32 1999/07/06 23:15:48 mjacob 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 1.32 1999/07/06 23:15:48 mjacob 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 #ifdef INET6 93 static int prefixlen __P((char *)); 94 #endif 95 static int x25_makemask __P((void)); 96 static void interfaces __P((void)); 97 static void monitor __P((void)); 98 static void print_getmsg __P((struct rt_msghdr *, int)); 99 #endif 100 static int rtmsg __P((int, int )); 101 static void mask_addr __P((void)); 102 static void print_rtmsg __P((struct rt_msghdr *, int)); 103 static void pmsg_common __P((struct rt_msghdr *)); 104 static void pmsg_addrs __P((char *, int)); 105 static void bprintf __P((FILE *, int, u_char *)); 106 static int keyword __P((char *)); 107 static void sodump __P((sup, char *)); 108 static void sockaddr __P((char *, struct sockaddr *)); 109 110 struct ortentry route; 111 union sockunion { 112 struct sockaddr sa; 113 struct sockaddr_in sin; 114 #ifdef INET6 115 struct sockaddr_in6 sin6; 116 #endif 117 struct sockaddr_at sat; 118 struct sockaddr_dl sdl; 119 #ifndef SMALL 120 struct sockaddr_ns sns; 121 struct sockaddr_iso siso; 122 struct sockaddr_x25 sx25; 123 #endif /* SMALL */ 124 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 125 126 int pid, rtm_addrs; 127 int s; 128 int forcehost, forcenet, doflush, nflag, af, qflag, tflag; 129 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 130 int locking, lockrest, debugonly; 131 struct rt_metrics rt_metrics; 132 u_int32_t rtm_inits; 133 #ifdef INET6 134 char ntop_buf[INET6_ADDRSTRLEN]; /*for inet_ntop()*/ 135 #endif 136 137 static void 138 usage(cp) 139 char *cp; 140 { 141 extern char *__progname; 142 if (cp) 143 warnx("botched keyword: %s", cp); 144 (void) fprintf(stderr, 145 "Usage: %s [ -fnqv ] cmd [[ -<qualifers> ] args ]\n", __progname); 146 exit(1); 147 /* NOTREACHED */ 148 } 149 150 #define ROUNDUP(a) \ 151 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(int32_t) - 1))) : sizeof(int32_t)) 152 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 153 154 int 155 main(argc, argv) 156 int argc; 157 char **argv; 158 { 159 int ch; 160 161 if (argc < 2) 162 usage(NULL); 163 164 while ((ch = getopt(argc, argv, "fnqvdt")) != -1) 165 switch(ch) { 166 case 'f': 167 doflush = 1; 168 break; 169 case 'n': 170 nflag = 1; 171 break; 172 case 'q': 173 qflag = 1; 174 break; 175 case 'v': 176 verbose = 1; 177 break; 178 case 't': 179 tflag = 1; 180 break; 181 case 'd': 182 debugonly = 1; 183 break; 184 case '?': 185 default: 186 usage(NULL); 187 } 188 argc -= optind; 189 argv += optind; 190 191 pid = getpid(); 192 if (tflag) 193 s = open("/dev/null", O_WRONLY, 0); 194 else 195 s = socket(PF_ROUTE, SOCK_RAW, 0); 196 if (s < 0) 197 err(1, "socket"); 198 199 if (*argv == NULL) { 200 if (doflush) 201 ch = K_FLUSH; 202 else 203 goto no_cmd; 204 } else 205 ch = keyword(*argv); 206 207 switch (ch) { 208 209 #ifndef SMALL 210 case K_GET: 211 #endif /* SMALL */ 212 case K_CHANGE: 213 case K_ADD: 214 case K_DELETE: 215 if (doflush) 216 flushroutes(1, argv); 217 newroute(argc, argv); 218 break; 219 220 case K_SHOW: 221 show(argc, argv); 222 break; 223 224 #ifndef SMALL 225 case K_MONITOR: 226 monitor(); 227 break; 228 229 #endif /* SMALL */ 230 case K_FLUSH: 231 flushroutes(argc, argv); 232 break; 233 234 no_cmd: 235 default: 236 usage(*argv); 237 return 1; 238 } 239 return 0; 240 } 241 242 /* 243 * Purge all entries in the routing tables not 244 * associated with network interfaces. 245 */ 246 static void 247 flushroutes(argc, argv) 248 int argc; 249 char *argv[]; 250 { 251 size_t needed; 252 int mib[6], rlen, seqno; 253 char *buf, *next, *lim; 254 struct rt_msghdr *rtm; 255 256 af = 0; 257 shutdown(s, 0); /* Don't want to read back our messages */ 258 if (argc > 1) { 259 argv++; 260 if (argc == 2 && **argv == '-') 261 switch (keyword(*argv + 1)) { 262 case K_INET: 263 af = AF_INET; 264 break; 265 #ifdef INET6 266 case K_INET6: 267 af = AF_INET6; 268 break; 269 #endif 270 case K_ATALK: 271 af = AF_APPLETALK; 272 break; 273 #ifndef SMALL 274 case K_XNS: 275 af = AF_NS; 276 break; 277 #endif /* SMALL */ 278 case K_LINK: 279 af = AF_LINK; 280 break; 281 #ifndef SMALL 282 case K_ISO: 283 case K_OSI: 284 af = AF_ISO; 285 break; 286 case K_X25: 287 af = AF_CCITT; 288 #endif /* SMALL */ 289 default: 290 goto bad; 291 } else 292 bad: usage(*argv); 293 } 294 mib[0] = CTL_NET; 295 mib[1] = PF_ROUTE; 296 mib[2] = 0; /* protocol */ 297 mib[3] = 0; /* wildcard address family */ 298 mib[4] = NET_RT_DUMP; 299 mib[5] = 0; /* no flags */ 300 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 301 err(1, "route-sysctl-estimate"); 302 if (needed == 0) 303 return; 304 if ((buf = malloc(needed)) == NULL) 305 err(1, "malloc"); 306 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 307 err(1, "actual retrieval of routing table"); 308 lim = buf + needed; 309 if (verbose) { 310 (void) printf("Examining routing table from sysctl\n"); 311 if (af) printf("(address family %s)\n", (*argv + 1)); 312 } 313 seqno = 0; /* ??? */ 314 for (next = buf; next < lim; next += rtm->rtm_msglen) { 315 rtm = (struct rt_msghdr *)next; 316 if (verbose) 317 print_rtmsg(rtm, rtm->rtm_msglen); 318 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 319 continue; 320 if (af) { 321 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 322 323 if (sa->sa_family != af) 324 continue; 325 } 326 if (debugonly) 327 continue; 328 rtm->rtm_type = RTM_DELETE; 329 rtm->rtm_seq = seqno; 330 rlen = write(s, next, rtm->rtm_msglen); 331 if (rlen < (int)rtm->rtm_msglen) { 332 warn("write to routing socket, got %d for rlen", rlen); 333 break; 334 } 335 seqno++; 336 if (qflag) 337 continue; 338 if (verbose) 339 print_rtmsg(rtm, rlen); 340 else { 341 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 342 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 343 routename(sa) : netname(sa)); 344 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 345 (void) printf("%-20.20s ", routename(sa)); 346 (void) printf("done\n"); 347 } 348 } 349 } 350 351 352 static char hexlist[] = "0123456789abcdef"; 353 354 static char * 355 any_ntoa(sa) 356 const struct sockaddr *sa; 357 { 358 static char obuf[64]; 359 const char *in; 360 char *out; 361 int len; 362 363 len = sa->sa_len; 364 in = sa->sa_data; 365 out = obuf; 366 367 do { 368 *out++ = hexlist[(*in >> 4) & 15]; 369 *out++ = hexlist[(*in++) & 15]; 370 *out++ = '.'; 371 } while (--len > 0); 372 out[-1] = '\0'; 373 return obuf; 374 } 375 376 377 char * 378 routename(sa) 379 struct sockaddr *sa; 380 { 381 char *cp; 382 static char line[50]; 383 struct hostent *hp; 384 static char domain[MAXHOSTNAMELEN + 1]; 385 static int first = 1; 386 struct in_addr in; 387 388 if (first) { 389 first = 0; 390 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 391 (cp = strchr(domain, '.'))) { 392 (void)strncpy(domain, cp + 1, sizeof(domain) - 1); 393 domain[sizeof(domain) - 1] = '\0'; 394 } else 395 domain[0] = 0; 396 } 397 398 if (sa->sa_len == 0) { 399 strncpy(line, "default", sizeof(line) - 1); 400 line[sizeof(line) - 1] = '\0'; 401 } else switch (sa->sa_family) { 402 403 case AF_INET: 404 in = ((struct sockaddr_in *)sa)->sin_addr; 405 406 cp = 0; 407 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 408 cp = "default"; 409 if (cp == 0 && !nflag) { 410 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 411 AF_INET); 412 if (hp) { 413 if ((cp = strchr(hp->h_name, '.')) && 414 !strcmp(cp + 1, domain)) 415 *cp = 0; 416 cp = hp->h_name; 417 } 418 } 419 if (cp) 420 (void)strncpy(line, cp, sizeof(line) - 1); 421 else 422 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 423 line[sizeof(line) - 1] = '\0'; 424 break; 425 426 case AF_LINK: 427 return (link_ntoa((struct sockaddr_dl *)sa)); 428 429 #ifndef SMALL 430 #ifdef INET6 431 case AF_INET6: 432 { struct in6_addr in6; 433 int gap; 434 435 in6 = ((struct sockaddr_in6 *)sa)->sin6_addr; 436 gap = 24 - sa->sa_len; 437 if (gap > 0) 438 bzero((char *)(&in6 + 1) - gap, gap); 439 return ((char *)inet_ntop(AF_INET6, &in6, ntop_buf, sizeof(ntop_buf))); 440 } 441 #endif 442 443 case AF_NS: 444 return (ns_print((struct sockaddr_ns *)sa)); 445 446 case AF_ISO: 447 (void)snprintf(line, sizeof line, "iso %s", 448 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 449 break; 450 #endif /* SMALL */ 451 452 case AF_APPLETALK: 453 (void) snprintf(line, sizeof(line), "atalk %d.%d", 454 ((struct sockaddr_at *)sa)->sat_addr.s_net, 455 ((struct sockaddr_at *)sa)->sat_addr.s_node); 456 break; 457 458 default: 459 (void)snprintf(line, sizeof line, "(%d) %s", 460 sa->sa_family, any_ntoa(sa)); 461 break; 462 463 } 464 return (line); 465 } 466 467 /* 468 * Return the name of the network whose address is given. 469 * The address is assumed to be that of a net or subnet, not a host. 470 */ 471 char * 472 netname(sa) 473 struct sockaddr *sa; 474 { 475 char *cp = 0; 476 static char line[50]; 477 struct netent *np = 0; 478 u_int32_t net, mask; 479 u_int32_t i; 480 int subnetshift; 481 struct in_addr in; 482 483 switch (sa->sa_family) { 484 485 case AF_INET: 486 in = ((struct sockaddr_in *)sa)->sin_addr; 487 i = ntohl(in.s_addr); 488 if (i == 0) 489 cp = "default"; 490 else if (!nflag) { 491 if (IN_CLASSA(i)) { 492 mask = IN_CLASSA_NET; 493 subnetshift = 8; 494 } else if (IN_CLASSB(i)) { 495 mask = IN_CLASSB_NET; 496 subnetshift = 8; 497 } else { 498 mask = IN_CLASSC_NET; 499 subnetshift = 4; 500 } 501 /* 502 * If there are more bits than the standard mask 503 * would suggest, subnets must be in use. 504 * Guess at the subnet mask, assuming reasonable 505 * width subnet fields. 506 */ 507 while (i &~ mask) 508 mask = (int32_t)mask >> subnetshift; 509 net = i & mask; 510 while ((mask & 1) == 0) 511 mask >>= 1, net >>= 1; 512 np = getnetbyaddr(net, AF_INET); 513 if (np) 514 cp = np->n_name; 515 } 516 if (cp) { 517 (void)strncpy(line, cp, sizeof(line) - 1); 518 line[sizeof(line) - 1] = '\0'; 519 } else { 520 #if 0 /* XXX - This is silly... */ 521 #define C(x) ((x) & 0xff) 522 if ((i & 0xffffff) == 0) 523 (void)snprintf(line, sizeof line, "%u", 524 C(i >> 24)); 525 else if ((i & 0xffff) == 0) 526 (void)snprintf(line, sizeof line, "%u.%u", 527 C(i >> 24), C(i >> 16)); 528 else if ((i & 0xff) == 0) 529 (void)snprintf(line, sizeof line, "%u.%u.%u", 530 C(i >> 24), C(i >> 16), C(i >> 8)); 531 else 532 (void)snprintf(line, sizeof line, "%u.%u.%u.%u", 533 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 534 #undef C 535 #else /* XXX */ 536 (void)strncpy(line, inet_ntoa(in), sizeof(line) - 1); 537 #endif /* XXX */ 538 } 539 break; 540 541 case AF_LINK: 542 return (link_ntoa((struct sockaddr_dl *)sa)); 543 544 #ifndef SMALL 545 #ifdef INET6 546 case AF_INET6: 547 { struct in6_addr in6; 548 int gap; 549 550 in6 = ((struct sockaddr_in6 *)sa)->sin6_addr; 551 gap = 24 - sa->sa_len; 552 if (gap > 0) 553 bzero((char *)(&in6 + 1) - gap, gap); 554 return ((char *)inet_ntop(AF_INET6, &in6, ntop_buf, sizeof(ntop_buf))); 555 } 556 #endif 557 558 case AF_NS: 559 return (ns_print((struct sockaddr_ns *)sa)); 560 561 case AF_ISO: 562 (void)snprintf(line, sizeof line, "iso %s", 563 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 564 break; 565 #endif /* SMALL */ 566 567 case AF_APPLETALK: 568 (void) snprintf(line, sizeof(line), "atalk %d.%d", 569 ((struct sockaddr_at *)sa)->sat_addr.s_net, 570 ((struct sockaddr_at *)sa)->sat_addr.s_node); 571 break; 572 573 default: 574 (void)snprintf(line, sizeof line, "af %d: %s", 575 sa->sa_family, any_ntoa(sa)); 576 break; 577 } 578 return (line); 579 } 580 581 static void 582 set_metric(value, key) 583 char *value; 584 int key; 585 { 586 int flag = 0; 587 u_long noval, *valp = &noval; 588 589 switch (key) { 590 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 591 caseof(K_MTU, RTV_MTU, rmx_mtu); 592 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 593 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 594 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 595 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 596 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 597 caseof(K_RTT, RTV_RTT, rmx_rtt); 598 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 599 } 600 rtm_inits |= flag; 601 if (lockrest || locking) 602 rt_metrics.rmx_locks |= flag; 603 if (locking) 604 locking = 0; 605 *valp = atoi(value); 606 } 607 608 static void 609 newroute(argc, argv) 610 int argc; 611 char **argv; 612 { 613 char *cmd, *dest = "", *gateway = ""; 614 const char *err; 615 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 616 int key; 617 struct hostent *hp = 0; 618 619 cmd = argv[0]; 620 af = 0; 621 if (*cmd != 'g') 622 shutdown(s, 0); /* Don't want to read back our messages */ 623 while (--argc > 0) { 624 if (**(++argv)== '-') { 625 switch (key = keyword(1 + *argv)) { 626 627 case K_SA: 628 af = PF_ROUTE; 629 aflen = sizeof(union sockunion); 630 break; 631 632 case K_ATALK: 633 af = AF_APPLETALK; 634 aflen = sizeof(struct sockaddr_at); 635 break; 636 637 case K_INET: 638 af = AF_INET; 639 aflen = sizeof(struct sockaddr_in); 640 break; 641 642 #ifdef INET6 643 case K_INET6: 644 af = AF_INET6; 645 aflen = sizeof(struct sockaddr_in6); 646 if (prefixlen("64") != 64) { 647 fprintf(stderr, "internal error:" 648 "setting prefixlen=64\n"); 649 exit(1); 650 } 651 forcenet = 0; 652 ishost = 1; 653 break; 654 #endif 655 656 case K_LINK: 657 af = AF_LINK; 658 aflen = sizeof(struct sockaddr_dl); 659 break; 660 661 #ifndef SMALL 662 case K_OSI: 663 case K_ISO: 664 af = AF_ISO; 665 aflen = sizeof(struct sockaddr_iso); 666 break; 667 668 case K_X25: 669 af = AF_CCITT; 670 aflen = sizeof(struct sockaddr_x25); 671 break; 672 673 case K_XNS: 674 af = AF_NS; 675 aflen = sizeof(struct sockaddr_ns); 676 break; 677 #endif /* SMALL */ 678 679 case K_IFACE: 680 case K_INTERFACE: 681 iflag++; 682 break; 683 case K_NOSTATIC: 684 flags &= ~RTF_STATIC; 685 break; 686 case K_LLINFO: 687 flags |= RTF_LLINFO; 688 break; 689 case K_LOCK: 690 locking = 1; 691 break; 692 case K_LOCKREST: 693 lockrest = 1; 694 break; 695 case K_HOST: 696 forcehost++; 697 break; 698 case K_REJECT: 699 flags |= RTF_REJECT; 700 break; 701 case K_BLACKHOLE: 702 flags |= RTF_BLACKHOLE; 703 break; 704 case K_PROTO1: 705 flags |= RTF_PROTO1; 706 break; 707 case K_PROTO2: 708 flags |= RTF_PROTO2; 709 break; 710 case K_CLONING: 711 flags |= RTF_CLONING; 712 break; 713 case K_XRESOLVE: 714 flags |= RTF_XRESOLVE; 715 break; 716 case K_STATIC: 717 flags |= RTF_STATIC; 718 break; 719 case K_IFA: 720 if (!--argc) 721 usage(1+*argv); 722 (void) getaddr(RTA_IFA, *++argv, 0); 723 break; 724 case K_IFP: 725 if (!--argc) 726 usage(1+*argv); 727 (void) getaddr(RTA_IFP, *++argv, 0); 728 break; 729 case K_GENMASK: 730 if (!--argc) 731 usage(1+*argv); 732 (void) getaddr(RTA_GENMASK, *++argv, 0); 733 break; 734 case K_GATEWAY: 735 if (!--argc) 736 usage(1+*argv); 737 (void) getaddr(RTA_GATEWAY, *++argv, 0); 738 break; 739 case K_DST: 740 if (!--argc) 741 usage(1+*argv); 742 ishost = getaddr(RTA_DST, *++argv, &hp); 743 dest = *argv; 744 break; 745 case K_NETMASK: 746 if (!--argc) 747 usage(1+*argv); 748 (void) getaddr(RTA_NETMASK, *++argv, 0); 749 /* FALLTHROUGH */ 750 case K_NET: 751 forcenet++; 752 break; 753 #ifdef INET6 754 case K_PREFIXLEN: 755 argc--; 756 if (prefixlen(*++argv) == 128) { 757 forcenet = 0; 758 ishost = 1; 759 } else { 760 forcenet = 1; 761 ishost = 0; 762 } 763 break; 764 #endif 765 case K_MTU: 766 case K_HOPCOUNT: 767 case K_EXPIRE: 768 case K_RECVPIPE: 769 case K_SENDPIPE: 770 case K_SSTHRESH: 771 case K_RTT: 772 case K_RTTVAR: 773 if (!--argc) 774 usage(1+*argv); 775 set_metric(*++argv, key); 776 break; 777 default: 778 usage(1+*argv); 779 } 780 } else { 781 if ((rtm_addrs & RTA_DST) == 0) { 782 dest = *argv; 783 ishost = getaddr(RTA_DST, *argv, &hp); 784 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 785 gateway = *argv; 786 (void) getaddr(RTA_GATEWAY, *argv, &hp); 787 } else { 788 int ret = atoi(*argv); 789 790 if (ret == 0) { 791 if (!qflag && strcmp(*argv, "0") == 0) 792 warnx("%s, %s", 793 "old usage of trailing 0", 794 "assuming route to if"); 795 else 796 usage((char *)NULL); 797 iflag = 1; 798 continue; 799 } else if (ret > 0 && ret < 10) { 800 if (!qflag) { 801 warnx("%s, %s", 802 "old usage of trailing digit", 803 "assuming route via gateway"); 804 } 805 iflag = 0; 806 continue; 807 } 808 (void) getaddr(RTA_NETMASK, *argv, 0); 809 } 810 } 811 } 812 if (forcehost) 813 ishost = 1; 814 if (forcenet) 815 ishost = 0; 816 flags |= RTF_UP; 817 if (ishost) 818 flags |= RTF_HOST; 819 if (iflag == 0) 820 flags |= RTF_GATEWAY; 821 for (attempts = 1; ; attempts++) { 822 errno = 0; 823 if ((ret = rtmsg(*cmd, flags)) == 0) 824 break; 825 if (errno != ENETUNREACH && errno != ESRCH) 826 break; 827 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 828 hp->h_addr_list++; 829 memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0], 830 hp->h_length); 831 } else 832 break; 833 } 834 if (*cmd == 'g') 835 exit(0); 836 oerrno = errno; 837 if (!qflag) { 838 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 839 if (*gateway) { 840 (void) printf(": gateway %s", gateway); 841 if (attempts > 1 && ret == 0 && af == AF_INET) 842 (void) printf(" (%s)", 843 inet_ntoa(((struct sockaddr_in *) 844 &route.rt_gateway)->sin_addr)); 845 } 846 if (ret == 0) 847 (void) printf("\n"); 848 } 849 if (ret != 0) { 850 switch (oerrno) { 851 case ESRCH: 852 err = "not in table"; 853 break; 854 case EBUSY: 855 err = "entry in use"; 856 break; 857 case ENOBUFS: 858 err = "routing table overflow"; 859 break; 860 default: 861 err = strerror(oerrno); 862 break; 863 } 864 (void) printf(": %s\n", err); 865 } 866 } 867 868 static void 869 inet_makenetandmask(net, sin) 870 u_int32_t net; 871 struct sockaddr_in *sin; 872 { 873 u_int32_t addr, mask = 0; 874 char *cp; 875 876 rtm_addrs |= RTA_NETMASK; 877 if (net == 0) 878 mask = addr = 0; 879 else if (net < 128) { 880 addr = net << IN_CLASSA_NSHIFT; 881 mask = IN_CLASSA_NET; 882 } else if (net < 65536) { 883 addr = net << IN_CLASSB_NSHIFT; 884 mask = IN_CLASSB_NET; 885 } else if (net < 16777216L) { 886 addr = net << IN_CLASSC_NSHIFT; 887 mask = IN_CLASSC_NET; 888 } else { 889 addr = net; 890 if ((addr & IN_CLASSA_HOST) == 0) 891 mask = IN_CLASSA_NET; 892 else if ((addr & IN_CLASSB_HOST) == 0) 893 mask = IN_CLASSB_NET; 894 else if ((addr & IN_CLASSC_HOST) == 0) 895 mask = IN_CLASSC_NET; 896 else 897 mask = -1; 898 } 899 sin->sin_addr.s_addr = htonl(addr); 900 sin = &so_mask.sin; 901 sin->sin_addr.s_addr = htonl(mask); 902 sin->sin_len = 0; 903 sin->sin_family = 0; 904 cp = (char *)(&sin->sin_addr + 1); 905 while (*--cp == 0 && cp > (char *)sin) 906 ; 907 sin->sin_len = 1 + cp - (char *)sin; 908 } 909 910 /* 911 * Interpret an argument as a network address of some kind, 912 * returning 1 if a host address, 0 if a network address. 913 */ 914 static int 915 getaddr(which, s, hpp) 916 int which; 917 char *s; 918 struct hostent **hpp; 919 { 920 sup su; 921 struct hostent *hp; 922 struct netent *np; 923 u_int32_t val; 924 char *t; 925 int afamily; /* local copy of af so we can change it */ 926 927 if (af == 0) { 928 af = AF_INET; 929 aflen = sizeof(struct sockaddr_in); 930 } 931 afamily = af; 932 rtm_addrs |= which; 933 switch (which) { 934 case RTA_DST: 935 su = &so_dst; 936 break; 937 case RTA_GATEWAY: 938 su = &so_gate; 939 break; 940 case RTA_NETMASK: 941 su = &so_mask; 942 break; 943 case RTA_GENMASK: 944 su = &so_genmask; 945 break; 946 case RTA_IFP: 947 su = &so_ifp; 948 afamily = AF_LINK; 949 break; 950 case RTA_IFA: 951 su = &so_ifa; 952 su->sa.sa_family = af; 953 break; 954 default: 955 su = NULL; 956 usage("Internal Error"); 957 /*NOTREACHED*/ 958 } 959 su->sa.sa_len = aflen; 960 su->sa.sa_family = afamily; /* cases that don't want it have left already */ 961 if (strcmp(s, "default") == 0) { 962 switch (which) { 963 case RTA_DST: 964 forcenet++; 965 (void) getaddr(RTA_NETMASK, s, 0); 966 break; 967 case RTA_NETMASK: 968 case RTA_GENMASK: 969 su->sa.sa_len = 0; 970 } 971 return (0); 972 } 973 switch (afamily) { 974 #ifndef SMALL 975 #ifdef INET6 976 case AF_INET6: 977 if (inet_pton(AF_INET6, s, (void *)&su->sin6.sin6_addr) == -1) { 978 (void) fprintf(stderr, "%s: bad value\n", s); 979 exit(1); 980 } 981 return 0; 982 #endif 983 984 case AF_NS: 985 if (which == RTA_DST) { 986 extern short ns_bh[3]; 987 struct sockaddr_ns *sms = &(so_mask.sns); 988 memset(sms, 0, sizeof(*sms)); 989 sms->sns_family = 0; 990 sms->sns_len = 6; 991 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 992 rtm_addrs |= RTA_NETMASK; 993 } 994 su->sns.sns_addr = ns_addr(s); 995 return (!ns_nullhost(su->sns.sns_addr)); 996 997 case AF_OSI: 998 su->siso.siso_addr = *iso_addr(s); 999 if (which == RTA_NETMASK || which == RTA_GENMASK) { 1000 char *cp = (char *)TSEL(&su->siso); 1001 su->siso.siso_nlen = 0; 1002 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 1003 su->siso.siso_len = 1 + cp - (char *)su; 1004 } 1005 return (1); 1006 1007 case AF_CCITT: 1008 ccitt_addr(s, &su->sx25); 1009 return (which == RTA_DST ? x25_makemask() : 1); 1010 #endif /* SMALL */ 1011 1012 case PF_ROUTE: 1013 su->sa.sa_len = sizeof(*su); 1014 sockaddr(s, &su->sa); 1015 return (1); 1016 1017 case AF_APPLETALK: 1018 t = strchr (s, '.'); 1019 if (!t) { 1020 badataddr: 1021 errx(1, "bad address: %s", s); 1022 } 1023 val = atoi (s); 1024 if (val > 65535) 1025 goto badataddr; 1026 su->sat.sat_addr.s_net = val; 1027 val = atoi (t); 1028 if (val > 256) 1029 goto badataddr; 1030 su->sat.sat_addr.s_node = val; 1031 rtm_addrs |= RTA_NETMASK; 1032 return(forcehost || su->sat.sat_addr.s_node != 0); 1033 1034 case AF_LINK: 1035 link_addr(s, &su->sdl); 1036 return (1); 1037 1038 case AF_INET: 1039 default: 1040 break; 1041 } 1042 1043 if (hpp == NULL) 1044 hpp = &hp; 1045 *hpp = NULL; 1046 if (((val = inet_addr(s)) != INADDR_NONE) && 1047 (which != RTA_DST || forcenet == 0)) { 1048 su->sin.sin_addr.s_addr = val; 1049 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 1050 return (1); 1051 else { 1052 val = ntohl(val); 1053 goto netdone; 1054 } 1055 } 1056 if ((val = inet_network(s)) != INADDR_NONE || 1057 ((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) { 1058 netdone: 1059 if (which == RTA_DST) 1060 inet_makenetandmask(val, &su->sin); 1061 return (0); 1062 } 1063 hp = gethostbyname(s); 1064 if (hp) { 1065 *hpp = hp; 1066 su->sin.sin_family = hp->h_addrtype; 1067 memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length); 1068 return (1); 1069 } 1070 errx(1, "bad value: %s", s); 1071 } 1072 1073 #ifndef SMALL 1074 #ifdef INET6 1075 int 1076 prefixlen(s) 1077 char *s; 1078 { 1079 int len = atoi(s), q, r; 1080 1081 rtm_addrs |= RTA_NETMASK; 1082 if (len < -1 || len > 129) { 1083 (void) fprintf(stderr, "%s: bad value\n", s); 1084 exit(1); 1085 } 1086 1087 q = len >> 3; 1088 r = len & 7; 1089 so_mask.sin6.sin6_family = AF_INET6; 1090 so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6); 1091 memset((void *)&so_mask.sin6.sin6_addr, 0, 1092 sizeof(so_mask.sin6.sin6_addr)); 1093 if (q > 0) 1094 memset((void *)&so_mask.sin6.sin6_addr, 0xff, q); 1095 if (r > 0) 1096 *((u_char *)&so_mask.sin6.sin6_addr + q) = (0xff00 >> r) & 0xff; 1097 return(len); 1098 } 1099 #endif 1100 1101 int 1102 x25_makemask() 1103 { 1104 char *cp; 1105 1106 if ((rtm_addrs & RTA_NETMASK) == 0) { 1107 rtm_addrs |= RTA_NETMASK; 1108 for (cp = (char *)&so_mask.sx25.x25_net; 1109 cp < &so_mask.sx25.x25_opts.op_flags; cp++) 1110 *cp = -1; 1111 so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts); 1112 } 1113 return 0; 1114 } 1115 1116 short ns_nullh[] = {0,0,0}; 1117 short ns_bh[] = {-1,-1,-1}; 1118 1119 char * 1120 ns_print(sns) 1121 struct sockaddr_ns *sns; 1122 { 1123 struct ns_addr work; 1124 union { union ns_net net_e; u_int32_t int32_t_e; } net; 1125 u_short port; 1126 static char mybuf[50], cport[10], chost[25]; 1127 char *host = ""; 1128 char *p; 1129 u_char *q; 1130 1131 work = sns->sns_addr; 1132 port = ntohs(work.x_port); 1133 work.x_port = 0; 1134 net.net_e = work.x_net; 1135 if (ns_nullhost(work) && net.int32_t_e == 0) { 1136 if (!port) 1137 return ("*.*"); 1138 (void)snprintf(mybuf, sizeof mybuf, "*.%XH", port); 1139 return (mybuf); 1140 } 1141 1142 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) 1143 host = "any"; 1144 else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) 1145 host = "*"; 1146 else { 1147 q = work.x_host.c_host; 1148 (void)snprintf(chost, sizeof chost, "%02X%02X%02X%02X%02X%02XH", 1149 q[0], q[1], q[2], q[3], q[4], q[5]); 1150 for (p = chost; *p == '0' && p < chost + 12; p++) 1151 /* void */; 1152 host = p; 1153 } 1154 if (port) 1155 (void)snprintf(cport, sizeof cport, ".%XH", htons(port)); 1156 else 1157 *cport = 0; 1158 1159 (void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s", 1160 (u_int32_t)ntohl(net.int32_t_e), host, cport); 1161 return (mybuf); 1162 } 1163 1164 static void 1165 interfaces() 1166 { 1167 size_t needed; 1168 int mib[6]; 1169 char *buf, *lim, *next; 1170 struct rt_msghdr *rtm; 1171 1172 mib[0] = CTL_NET; 1173 mib[1] = PF_ROUTE; 1174 mib[2] = 0; /* protocol */ 1175 mib[3] = 0; /* wildcard address family */ 1176 mib[4] = NET_RT_IFLIST; 1177 mib[5] = 0; /* no flags */ 1178 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 1179 err(1, "route-sysctl-estimate"); 1180 if ((buf = malloc(needed)) == NULL) 1181 err(1, "malloc"); 1182 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 1183 err(1, "actual retrieval of interface table"); 1184 lim = buf + needed; 1185 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1186 rtm = (struct rt_msghdr *)next; 1187 print_rtmsg(rtm, rtm->rtm_msglen); 1188 } 1189 } 1190 1191 static void 1192 monitor() 1193 { 1194 int n; 1195 char msg[2048]; 1196 1197 verbose = 1; 1198 if (debugonly) { 1199 interfaces(); 1200 exit(0); 1201 } 1202 for(;;) { 1203 time_t now; 1204 n = read(s, msg, 2048); 1205 now = time(NULL); 1206 (void) printf("got message of size %d on %s", n, ctime(&now)); 1207 print_rtmsg((struct rt_msghdr *)msg, n); 1208 } 1209 } 1210 1211 #endif /* SMALL */ 1212 1213 1214 struct { 1215 struct rt_msghdr m_rtm; 1216 char m_space[512]; 1217 } m_rtmsg; 1218 1219 static int 1220 rtmsg(cmd, flags) 1221 int cmd, flags; 1222 { 1223 static int seq; 1224 int rlen; 1225 char *cp = m_rtmsg.m_space; 1226 int l; 1227 1228 #define NEXTADDR(w, u) \ 1229 if (rtm_addrs & (w)) {\ 1230 l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\ 1231 if (verbose) sodump(&(u),"u");\ 1232 } 1233 1234 errno = 0; 1235 memset(&m_rtmsg, 0, sizeof(m_rtmsg)); 1236 if (cmd == 'a') 1237 cmd = RTM_ADD; 1238 else if (cmd == 'c') 1239 cmd = RTM_CHANGE; 1240 else if (cmd == 'g') { 1241 #ifdef SMALL 1242 return (-1); 1243 #else /* SMALL */ 1244 cmd = RTM_GET; 1245 if (so_ifp.sa.sa_family == 0) { 1246 so_ifp.sa.sa_family = AF_LINK; 1247 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1248 rtm_addrs |= RTA_IFP; 1249 } 1250 #endif /* SMALL */ 1251 } else 1252 cmd = RTM_DELETE; 1253 #define rtm m_rtmsg.m_rtm 1254 rtm.rtm_type = cmd; 1255 rtm.rtm_flags = flags; 1256 rtm.rtm_version = RTM_VERSION; 1257 rtm.rtm_seq = ++seq; 1258 rtm.rtm_addrs = rtm_addrs; 1259 rtm.rtm_rmx = rt_metrics; 1260 rtm.rtm_inits = rtm_inits; 1261 1262 if (rtm_addrs & RTA_NETMASK) 1263 mask_addr(); 1264 NEXTADDR(RTA_DST, so_dst); 1265 NEXTADDR(RTA_GATEWAY, so_gate); 1266 NEXTADDR(RTA_NETMASK, so_mask); 1267 NEXTADDR(RTA_GENMASK, so_genmask); 1268 NEXTADDR(RTA_IFP, so_ifp); 1269 NEXTADDR(RTA_IFA, so_ifa); 1270 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1271 if (verbose) 1272 print_rtmsg(&rtm, l); 1273 if (debugonly) 1274 return (0); 1275 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1276 perror("writing to routing socket"); 1277 return (-1); 1278 } 1279 #ifndef SMALL 1280 if (cmd == RTM_GET) { 1281 do { 1282 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1283 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1284 if (l < 0) 1285 err(1, "read from routing socket"); 1286 else 1287 print_getmsg(&rtm, l); 1288 } 1289 #endif /* SMALL */ 1290 #undef rtm 1291 return (0); 1292 } 1293 1294 static void 1295 mask_addr() 1296 { 1297 int olen = so_mask.sa.sa_len; 1298 char *cp1 = olen + (char *)&so_mask, *cp2; 1299 1300 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1301 if (*--cp1 != 0) { 1302 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1303 break; 1304 } 1305 if ((rtm_addrs & RTA_DST) == 0) 1306 return; 1307 switch (so_dst.sa.sa_family) { 1308 case AF_INET: 1309 #ifdef INET6 1310 case AF_INET6: 1311 #endif 1312 case AF_APPLETALK: 1313 #ifndef SMALL 1314 case AF_NS: 1315 case AF_CCITT: 1316 #endif /* SMALL */ 1317 case 0: 1318 return; 1319 #ifndef SMALL 1320 case AF_ISO: 1321 olen = MIN(so_dst.siso.siso_nlen, 1322 MAX(so_mask.sa.sa_len - 6, 0)); 1323 break; 1324 #endif /* SMALL */ 1325 } 1326 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1327 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1328 while (cp2 > cp1) 1329 *--cp2 = 0; 1330 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1331 while (cp1 > so_dst.sa.sa_data) 1332 *--cp1 &= *--cp2; 1333 #ifndef SMALL 1334 switch (so_dst.sa.sa_family) { 1335 case AF_ISO: 1336 so_dst.siso.siso_nlen = olen; 1337 break; 1338 } 1339 #endif /* SMALL */ 1340 } 1341 1342 char *msgtypes[] = { 1343 "", 1344 "RTM_ADD: Add Route", 1345 "RTM_DELETE: Delete Route", 1346 "RTM_CHANGE: Change Metrics or flags", 1347 "RTM_GET: Report Metrics", 1348 "RTM_LOSING: Kernel Suspects Partitioning", 1349 "RTM_REDIRECT: Told to use different route", 1350 "RTM_MISS: Lookup failed on this address", 1351 "RTM_LOCK: fix specified metrics", 1352 "RTM_OLDADD: caused by SIOCADDRT", 1353 "RTM_OLDDEL: caused by SIOCDELRT", 1354 "RTM_RESOLVE: Route created by cloning", 1355 "RTM_NEWADDR: address being added to iface", 1356 "RTM_DELADDR: address being removed from iface", 1357 "RTM_IFINFO: iface status change", 1358 0, 1359 }; 1360 1361 char metricnames[] = 1362 "\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1363 char routeflags[] = 1364 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\017PROTO2\020PROTO1"; 1365 char ifnetflags[] = 1366 "\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST"; 1367 char addrnames[] = 1368 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1369 1370 static void 1371 print_rtmsg(rtm, msglen) 1372 struct rt_msghdr *rtm; 1373 int msglen; 1374 { 1375 struct if_msghdr *ifm; 1376 struct ifa_msghdr *ifam; 1377 1378 if (verbose == 0) 1379 return; 1380 if (rtm->rtm_version != RTM_VERSION) { 1381 (void) printf("routing message version %d not understood\n", 1382 rtm->rtm_version); 1383 return; 1384 } 1385 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1386 switch (rtm->rtm_type) { 1387 case RTM_IFINFO: 1388 ifm = (struct if_msghdr *)rtm; 1389 (void) printf("if# %d, flags:", ifm->ifm_index); 1390 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1391 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1392 break; 1393 case RTM_NEWADDR: 1394 case RTM_DELADDR: 1395 ifam = (struct ifa_msghdr *)rtm; 1396 (void) printf("metric %d, flags:", ifam->ifam_metric); 1397 bprintf(stdout, ifam->ifam_flags, routeflags); 1398 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1399 break; 1400 default: 1401 (void) printf("pid: %d, seq %d, errno %d, flags:", 1402 rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1403 bprintf(stdout, rtm->rtm_flags, routeflags); 1404 pmsg_common(rtm); 1405 } 1406 } 1407 1408 #ifndef SMALL 1409 static void 1410 print_getmsg(rtm, msglen) 1411 struct rt_msghdr *rtm; 1412 int msglen; 1413 { 1414 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1415 struct sockaddr_dl *ifp = NULL; 1416 struct sockaddr *sa; 1417 char *cp; 1418 int i; 1419 1420 (void) printf(" route to: %s\n", 1421 routename((struct sockaddr *) &so_dst)); 1422 if (rtm->rtm_version != RTM_VERSION) { 1423 warnx("routing message version %d not understood", 1424 rtm->rtm_version); 1425 return; 1426 } 1427 if (rtm->rtm_msglen > msglen) { 1428 warnx("message length mismatch, in packet %d, returned %d\n", 1429 rtm->rtm_msglen, msglen); 1430 } 1431 if (rtm->rtm_errno) { 1432 warn("RTM_GET"); 1433 return; 1434 } 1435 cp = ((char *)(rtm + 1)); 1436 if (rtm->rtm_addrs) 1437 for (i = 1; i; i <<= 1) 1438 if (i & rtm->rtm_addrs) { 1439 sa = (struct sockaddr *)cp; 1440 switch (i) { 1441 case RTA_DST: 1442 dst = sa; 1443 break; 1444 case RTA_GATEWAY: 1445 gate = sa; 1446 break; 1447 case RTA_NETMASK: 1448 mask = sa; 1449 break; 1450 case RTA_IFP: 1451 if (sa->sa_family == AF_LINK && 1452 ((struct sockaddr_dl *)sa)->sdl_nlen) 1453 ifp = (struct sockaddr_dl *)sa; 1454 break; 1455 } 1456 ADVANCE(cp, sa); 1457 } 1458 if (dst && mask) 1459 mask->sa_family = dst->sa_family; /* XXX */ 1460 if (dst) 1461 (void)printf("destination: %s\n", routename(dst)); 1462 if (mask) { 1463 int savenflag = nflag; 1464 1465 nflag = 1; 1466 (void)printf(" mask: %s\n", routename(mask)); 1467 nflag = savenflag; 1468 } 1469 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1470 (void)printf(" gateway: %s\n", routename(gate)); 1471 if (ifp) 1472 (void)printf(" interface: %.*s\n", 1473 ifp->sdl_nlen, ifp->sdl_data); 1474 (void)printf(" flags: "); 1475 bprintf(stdout, rtm->rtm_flags, routeflags); 1476 1477 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1478 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1479 1480 (void) printf("\n%s\n", "\ 1481 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1482 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1483 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1484 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1485 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1486 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1487 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1488 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1489 if (rtm->rtm_rmx.rmx_expire) 1490 rtm->rtm_rmx.rmx_expire -= time(0); 1491 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1492 #undef lock 1493 #undef msec 1494 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1495 if (verbose) 1496 pmsg_common(rtm); 1497 else if (rtm->rtm_addrs &~ RTA_IGN) { 1498 (void) printf("sockaddrs: "); 1499 bprintf(stdout, rtm->rtm_addrs, addrnames); 1500 putchar('\n'); 1501 } 1502 #undef RTA_IGN 1503 } 1504 #endif /* SMALL */ 1505 1506 void 1507 pmsg_common(rtm) 1508 struct rt_msghdr *rtm; 1509 { 1510 (void) printf("\nlocks: "); 1511 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1512 (void) printf(" inits: "); 1513 bprintf(stdout, rtm->rtm_inits, metricnames); 1514 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1515 } 1516 1517 static void 1518 pmsg_addrs(cp, addrs) 1519 char *cp; 1520 int addrs; 1521 { 1522 struct sockaddr *sa; 1523 int i; 1524 1525 if (addrs == 0) 1526 return; 1527 (void) printf("\nsockaddrs: "); 1528 bprintf(stdout, addrs, addrnames); 1529 (void) putchar('\n'); 1530 for (i = 1; i; i <<= 1) 1531 if (i & addrs) { 1532 sa = (struct sockaddr *)cp; 1533 (void) printf(" %s", routename(sa)); 1534 ADVANCE(cp, sa); 1535 } 1536 (void) putchar('\n'); 1537 (void) fflush(stdout); 1538 } 1539 1540 static void 1541 bprintf(fp, b, s) 1542 FILE *fp; 1543 int b; 1544 u_char *s; 1545 { 1546 int i; 1547 int gotsome = 0; 1548 1549 if (b == 0) 1550 return; 1551 while ((i = *s++) != 0) { 1552 if (b & (1 << (i-1))) { 1553 if (gotsome == 0) 1554 i = '<'; 1555 else 1556 i = ','; 1557 (void) putc(i, fp); 1558 gotsome = 1; 1559 for (; (i = *s) > 32; s++) 1560 (void) putc(i, fp); 1561 } else 1562 while (*s > 32) 1563 s++; 1564 } 1565 if (gotsome) 1566 (void) putc('>', fp); 1567 } 1568 1569 static int 1570 keyword(cp) 1571 char *cp; 1572 { 1573 struct keytab *kt = keywords; 1574 1575 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1576 kt++; 1577 return kt->kt_i; 1578 } 1579 1580 static void 1581 sodump(su, which) 1582 sup su; 1583 char *which; 1584 { 1585 switch (su->sa.sa_family) { 1586 case AF_INET: 1587 (void) printf("%s: inet %s; ", 1588 which, inet_ntoa(su->sin.sin_addr)); 1589 break; 1590 case AF_APPLETALK: 1591 (void) printf("%s: atalk %d.%d; ", 1592 which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node); 1593 break; 1594 case AF_LINK: 1595 (void) printf("%s: link %s; ", 1596 which, link_ntoa(&su->sdl)); 1597 break; 1598 #ifndef SMALL 1599 #ifdef INET6 1600 case AF_INET6: 1601 (void) printf("%s: inet6 %s; ", 1602 which, inet_ntop(AF_INET6, &su->sin6.sin6_addr, 1603 ntop_buf, sizeof(ntop_buf))); 1604 break; 1605 #endif 1606 case AF_ISO: 1607 (void) printf("%s: iso %s; ", 1608 which, iso_ntoa(&su->siso.siso_addr)); 1609 break; 1610 case AF_NS: 1611 (void) printf("%s: xns %s; ", 1612 which, ns_ntoa(su->sns.sns_addr)); 1613 break; 1614 #endif /* SMALL */ 1615 default: 1616 (void) printf("af %p: %s; ", 1617 which, any_ntoa(&su->sa)); 1618 } 1619 (void) fflush(stdout); 1620 } 1621 1622 /* States*/ 1623 #define VIRGIN 0 1624 #define GOTONE 1 1625 #define GOTTWO 2 1626 /* Inputs */ 1627 #define DIGIT (4*0) 1628 #define END (4*1) 1629 #define DELIM (4*2) 1630 1631 static void 1632 sockaddr(addr, sa) 1633 char *addr; 1634 struct sockaddr *sa; 1635 { 1636 char *cp = (char *)sa; 1637 int size = sa->sa_len; 1638 char *cplim = cp + size; 1639 int byte = 0, state = VIRGIN, new = 0; 1640 1641 (void) memset(cp, 0, size); 1642 cp++; 1643 do { 1644 if ((*addr >= '0') && (*addr <= '9')) { 1645 new = *addr - '0'; 1646 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1647 new = *addr - 'a' + 10; 1648 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1649 new = *addr - 'A' + 10; 1650 } else if (*addr == 0) 1651 state |= END; 1652 else 1653 state |= DELIM; 1654 addr++; 1655 switch (state /* | INPUT */) { 1656 case GOTTWO | DIGIT: 1657 *cp++ = byte; /*FALLTHROUGH*/ 1658 case VIRGIN | DIGIT: 1659 state = GOTONE; byte = new; continue; 1660 case GOTONE | DIGIT: 1661 state = GOTTWO; byte = new + (byte << 4); continue; 1662 default: /* | DELIM */ 1663 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1664 case GOTONE | END: 1665 case GOTTWO | END: 1666 *cp++ = byte; /* FALLTHROUGH */ 1667 case VIRGIN | END: 1668 break; 1669 } 1670 break; 1671 } while (cp < cplim); 1672 sa->sa_len = cp - (char *)sa; 1673 } 1674
Indexes created Sun Sep 28 07:09:56 GMT 2025