1 /* 2 * Copyright (c) 1983, 1989, 1991 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 char copyright[] = 10 "@(#) Copyright (c) 1983, 1989, 1991 The Regents of the University of California.\n\ 11 All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)route.c 5.40 (Berkeley) 08/20/91"; 16 #endif /* not lint */ 17 18 #include <sys/param.h> 19 #include <sys/file.h> 20 #include <sys/socket.h> 21 #include <sys/ioctl.h> 22 #include <sys/mbuf.h> 23 #include <sys/kinfo.h> 24 25 #include <net/route.h> 26 #include <net/if_dl.h> 27 #include <netinet/in.h> 28 #include <netns/ns.h> 29 #include <netiso/iso.h> 30 #include <netccitt/x25.h> 31 #include <arpa/inet.h> 32 #include <netdb.h> 33 34 #include <errno.h> 35 #include <unistd.h> 36 #include <stdio.h> 37 #include <ctype.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <paths.h> 41 42 struct keytab { 43 char *kt_cp; 44 int kt_i; 45 } keywords[] = { 46 #include "keywords.h" 47 {0, 0} 48 }; 49 50 struct ortentry route; 51 union sockunion { 52 struct sockaddr sa; 53 struct sockaddr_in sin; 54 struct sockaddr_ns sns; 55 struct sockaddr_iso siso; 56 struct sockaddr_dl sdl; 57 struct sockaddr_x25 sx25; 58 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 59 60 typedef union sockunion *sup; 61 int pid, rtm_addrs, uid; 62 int s; 63 int forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 64 int iflag, verbose, aflen = sizeof (struct sockaddr_in); 65 int locking, lockrest, debugonly; 66 struct sockaddr_in sin = { sizeof(sin), AF_INET }; 67 struct rt_metrics rt_metrics; 68 u_long rtm_inits; 69 struct in_addr inet_makeaddr(); 70 char *routename(), *netname(); 71 void flushroutes(), newroute(), monitor(), sockaddr(); 72 void print_getmsg(), print_rtmsg(), pmsg_common(), sodump(), bprintf(); 73 int getaddr(), rtmsg(); 74 extern char *inet_ntoa(), *iso_ntoa(), *link_ntoa(); 75 76 void 77 usage(cp) 78 char *cp; 79 { 80 if (cp) 81 (void) fprintf(stderr, "route: botched keyword: %s\n", cp); 82 (void) fprintf(stderr, 83 "usage: route [ -nqv ] cmd [[ -<qualifers> ] args ]\n"); 84 exit(1); 85 /* NOTREACHED */ 86 } 87 88 void 89 quit(s) 90 char *s; 91 { 92 int sverrno = errno; 93 94 (void) fprintf(stderr, "route: "); 95 if (s) 96 (void) fprintf(stderr, "%s: ", s); 97 (void) fprintf(stderr, "%s\n", strerror(sverrno)); 98 exit(1); 99 /* NOTREACHED */ 100 } 101 102 #define ROUNDUP(a) \ 103 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 104 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 105 106 main(argc, argv) 107 int argc; 108 char **argv; 109 { 110 extern int optind; 111 int ch; 112 char *argvp; 113 114 if (argc < 2) 115 usage((char *)NULL); 116 117 while ((ch = getopt(argc, argv, "nqtv")) != EOF) 118 switch(ch) { 119 case 'n': 120 nflag = 1; 121 break; 122 case 'q': 123 qflag = 1; 124 break; 125 case 'v': 126 verbose = 1; 127 break; 128 case 't': 129 tflag = 1; 130 break; 131 case '?': 132 default: 133 usage(); 134 } 135 argc -= optind; 136 argv += optind; 137 138 pid = getpid(); 139 uid = getuid(); 140 if (tflag) 141 s = open("/dev/null", O_WRONLY, 0); 142 else 143 s = socket(PF_ROUTE, SOCK_RAW, 0); 144 if (s < 0) 145 quit("socket"); 146 if (*argv) 147 switch (keyword(*argv)) { 148 case K_GET: 149 uid = 0; 150 /* FALLTHROUGH */ 151 152 case K_CHANGE: 153 case K_ADD: 154 case K_DELETE: 155 newroute(argc, argv); 156 exit(0); 157 /* NOTREACHED */ 158 159 case K_MONITOR: 160 monitor(); 161 /* NOTREACHED */ 162 163 case K_FLUSH: 164 flushroutes(argc, argv); 165 exit(0); 166 /* NOTREACHED */ 167 } 168 usage(*argv); 169 /* NOTREACHED */ 170 } 171 172 /* 173 * Purge all entries in the routing tables not 174 * associated with network interfaces. 175 */ 176 void 177 flushroutes(argc, argv) 178 int argc; 179 char *argv[]; 180 { 181 int needed, seqno, rlen; 182 char *buf, *next, *lim; 183 register struct rt_msghdr *rtm; 184 185 if (uid) 186 quit("must be root to alter routing table"); 187 shutdown(s, 0); /* Don't want to read back our messages */ 188 if (argc > 1) { 189 argv++; 190 if (argc == 2 && **argv == '-') 191 switch (keyword(*argv + 1)) { 192 case K_INET: 193 af = AF_INET; 194 break; 195 case K_XNS: 196 af = AF_NS; 197 break; 198 case K_LINK: 199 af = AF_LINK; 200 break; 201 case K_ISO: 202 case K_OSI: 203 af = AF_ISO; 204 break; 205 case K_X25: 206 af = AF_CCITT; 207 default: 208 goto bad; 209 } else 210 bad: usage(*argv); 211 } 212 if ((needed = getkerninfo(KINFO_RT_DUMP, 0, 0, 0)) < 0) 213 quit("route-getkerninfo-estimate"); 214 if ((buf = malloc(needed)) == NULL) 215 quit("malloc"); 216 if ((rlen = getkerninfo(KINFO_RT_DUMP, buf, &needed, 0)) < 0) 217 quit("actual retrieval of routing table"); 218 lim = buf + rlen; 219 seqno = 0; /* ??? */ 220 for (next = buf; next < lim; next += rtm->rtm_msglen) { 221 rtm = (struct rt_msghdr *)next; 222 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 223 continue; 224 if (af) { 225 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 226 227 if (sa->sa_family != af) 228 continue; 229 } 230 rtm->rtm_type = RTM_DELETE; 231 rtm->rtm_seq = seqno; 232 rlen = write(s, next, rtm->rtm_msglen); 233 if (rlen < (int)rtm->rtm_msglen) { 234 (void) fprintf(stderr, 235 "route: write to routing socket: %s\n", 236 strerror(errno)); 237 (void) printf("got only %d for rlen\n", rlen); 238 break; 239 } 240 seqno++; 241 if (qflag) 242 continue; 243 if (verbose) 244 print_rtmsg(rtm, rlen); 245 else { 246 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 247 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 248 routename(sa) : netname(sa)); 249 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 250 (void) printf("%-20.20s ", routename(sa)); 251 (void) printf("done\n"); 252 } 253 } 254 } 255 256 char * 257 routename(sa) 258 struct sockaddr *sa; 259 { 260 register char *cp; 261 static char line[50]; 262 struct hostent *hp; 263 static char domain[MAXHOSTNAMELEN + 1]; 264 static int first = 1; 265 char *ns_print(); 266 267 if (first) { 268 first = 0; 269 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 270 (cp = index(domain, '.'))) 271 (void) strcpy(domain, cp + 1); 272 else 273 domain[0] = 0; 274 } 275 276 if (sa->sa_len == 0) 277 strcpy(line, "default"); 278 else switch (sa->sa_family) { 279 280 case AF_INET: 281 { struct in_addr in; 282 in = ((struct sockaddr_in *)sa)->sin_addr; 283 284 cp = 0; 285 if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 286 cp = "default"; 287 if (cp == 0 && !nflag) { 288 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 289 AF_INET); 290 if (hp) { 291 if ((cp = index(hp->h_name, '.')) && 292 !strcmp(cp + 1, domain)) 293 *cp = 0; 294 cp = hp->h_name; 295 } 296 } 297 if (cp) 298 strcpy(line, cp); 299 else { 300 #define C(x) ((x) & 0xff) 301 in.s_addr = ntohl(in.s_addr); 302 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 303 C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr)); 304 } 305 break; 306 } 307 308 case AF_NS: 309 return (ns_print((struct sockaddr_ns *)sa)); 310 311 case AF_LINK: 312 return (link_ntoa((struct sockaddr_dl *)sa)); 313 314 case AF_ISO: 315 (void) sprintf(line, "iso %s", 316 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 317 break; 318 319 default: 320 { u_short *s = (u_short *)sa->sa_data; 321 u_short *slim = s + ((sa->sa_len + 1) >> 1); 322 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 323 324 while (s < slim) 325 cp += sprintf(cp, " %x", *s++); 326 break; 327 } 328 } 329 return (line); 330 } 331 332 /* 333 * Return the name of the network whose address is given. 334 * The address is assumed to be that of a net or subnet, not a host. 335 */ 336 char * 337 netname(sa) 338 struct sockaddr *sa; 339 { 340 char *cp = 0; 341 static char line[50]; 342 struct netent *np = 0; 343 u_long net, mask; 344 register u_long i; 345 int subnetshift; 346 char *ns_print(); 347 348 switch (sa->sa_family) { 349 350 case AF_INET: 351 { struct in_addr in; 352 in = ((struct sockaddr_in *)sa)->sin_addr; 353 354 i = in.s_addr = ntohl(in.s_addr); 355 if (in.s_addr == 0) 356 cp = "default"; 357 else if (!nflag) { 358 if (IN_CLASSA(i)) { 359 mask = IN_CLASSA_NET; 360 subnetshift = 8; 361 } else if (IN_CLASSB(i)) { 362 mask = IN_CLASSB_NET; 363 subnetshift = 8; 364 } else { 365 mask = IN_CLASSC_NET; 366 subnetshift = 4; 367 } 368 /* 369 * If there are more bits than the standard mask 370 * would suggest, subnets must be in use. 371 * Guess at the subnet mask, assuming reasonable 372 * width subnet fields. 373 */ 374 while (in.s_addr &~ mask) 375 mask = (long)mask >> subnetshift; 376 net = in.s_addr & mask; 377 while ((mask & 1) == 0) 378 mask >>= 1, net >>= 1; 379 np = getnetbyaddr(net, AF_INET); 380 if (np) 381 cp = np->n_name; 382 } 383 if (cp) 384 strcpy(line, cp); 385 else if ((in.s_addr & 0xffffff) == 0) 386 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 387 else if ((in.s_addr & 0xffff) == 0) 388 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 389 C(in.s_addr >> 16)); 390 else if ((in.s_addr & 0xff) == 0) 391 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 392 C(in.s_addr >> 16), C(in.s_addr >> 8)); 393 else 394 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 395 C(in.s_addr >> 16), C(in.s_addr >> 8), 396 C(in.s_addr)); 397 break; 398 } 399 400 case AF_NS: 401 return (ns_print((struct sockaddr_ns *)sa)); 402 break; 403 404 case AF_LINK: 405 return (link_ntoa((struct sockaddr_dl *)sa)); 406 407 case AF_ISO: 408 (void) sprintf(line, "iso %s", 409 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 410 break; 411 412 default: 413 { u_short *s = (u_short *)sa->sa_data; 414 u_short *slim = s + ((sa->sa_len + 1)>>1); 415 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 416 417 while (s < slim) 418 cp += sprintf(cp, " %x", *s++); 419 break; 420 } 421 } 422 return (line); 423 } 424 425 void 426 set_metric(value, key) 427 char *value; 428 int key; 429 { 430 int flag = 0; 431 u_long noval, *valp = &noval; 432 433 switch (key) { 434 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 435 caseof(K_MTU, RTV_MTU, rmx_mtu); 436 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 437 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 438 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 439 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 440 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 441 caseof(K_RTT, RTV_RTT, rmx_rtt); 442 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 443 } 444 rtm_inits |= flag; 445 if (lockrest || locking) 446 rt_metrics.rmx_locks |= flag; 447 if (locking) 448 locking = 0; 449 *valp = atoi(value); 450 } 451 452 void 453 newroute(argc, argv) 454 int argc; 455 register char **argv; 456 { 457 char *cmd, *dest = "", *gateway = "", *err; 458 int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 459 int key; 460 struct hostent *hp = 0; 461 462 if (uid) 463 quit("must be root to alter routing table"); 464 cmd = argv[0]; 465 if (*cmd != 'g') 466 shutdown(s, 0); /* Don't want to read back our messages */ 467 while (--argc > 0) { 468 if (**(++argv)== '-') { 469 switch (key = keyword(1 + *argv)) { 470 case K_LINK: 471 af = AF_LINK; 472 aflen = sizeof(struct sockaddr_dl); 473 break; 474 case K_OSI: 475 case K_ISO: 476 af = AF_ISO; 477 aflen = sizeof(struct sockaddr_iso); 478 break; 479 case K_INET: 480 af = AF_INET; 481 aflen = sizeof(struct sockaddr_in); 482 break; 483 case K_X25: 484 af = AF_CCITT; 485 aflen = sizeof(struct sockaddr_x25); 486 break; 487 case K_SA: 488 af = PF_ROUTE; 489 aflen = sizeof(union sockunion); 490 break; 491 case K_XNS: 492 af = AF_NS; 493 aflen = sizeof(struct sockaddr_ns); 494 break; 495 case K_IFACE: 496 case K_INTERFACE: 497 iflag++; 498 case K_NOSTATIC: 499 flags &= ~RTF_STATIC; 500 break; 501 case K_LOCK: 502 locking = 1; 503 break; 504 case K_LOCKREST: 505 lockrest = 1; 506 break; 507 case K_HOST: 508 forcehost++; 509 break; 510 case K_REJECT: 511 flags |= RTF_REJECT; 512 break; 513 case K_PROTO1: 514 flags |= RTF_PROTO1; 515 break; 516 case K_PROTO2: 517 flags |= RTF_PROTO2; 518 break; 519 case K_CLONING: 520 flags |= RTF_CLONING; 521 break; 522 case K_XRESOLVE: 523 flags |= RTF_XRESOLVE; 524 break; 525 case K_STATIC: 526 flags |= RTF_STATIC; 527 break; 528 case K_IFA: 529 argc--; 530 (void) getaddr(RTA_IFA, *++argv, 0); 531 break; 532 case K_IFP: 533 argc--; 534 (void) getaddr(RTA_IFP, *++argv, 0); 535 break; 536 case K_GENMASK: 537 argc--; 538 (void) getaddr(RTA_GENMASK, *++argv, 0); 539 break; 540 case K_GATEWAY: 541 argc--; 542 (void) getaddr(RTA_GATEWAY, *++argv, 0); 543 break; 544 case K_DST: 545 argc--; 546 ishost = getaddr(RTA_DST, *++argv, &hp); 547 dest = *argv; 548 break; 549 case K_NETMASK: 550 argc--; 551 (void) getaddr(RTA_NETMASK, *++argv, 0); 552 /* FALLTHROUGH */ 553 case K_NET: 554 forcenet++; 555 break; 556 case K_MTU: 557 case K_HOPCOUNT: 558 case K_EXPIRE: 559 case K_RECVPIPE: 560 case K_SENDPIPE: 561 case K_SSTHRESH: 562 case K_RTT: 563 case K_RTTVAR: 564 argc--; 565 set_metric(*++argv, key); 566 break; 567 default: 568 usage(1+*argv); 569 } 570 } else { 571 if ((rtm_addrs & RTA_DST) == 0) { 572 dest = *argv; 573 ishost = getaddr(RTA_DST, *argv, &hp); 574 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 575 gateway = *argv; 576 (void) getaddr(RTA_GATEWAY, *argv, &hp); 577 } else { 578 int ret = atoi(*argv); 579 580 if (ret == 0) { 581 if (strcmp(*argv, "0") == 0) 582 printf("%s,%s", 583 "old usage of trailing 0", 584 "assuming route to if\n"); 585 else 586 usage(NULL); 587 iflag = 1; 588 continue; 589 } else if (ret > 0 && ret < 10) { 590 printf("old usage of trailing digit, "); 591 printf("assuming route via gateway\n"); 592 iflag = 0; 593 continue; 594 } 595 (void) getaddr(RTA_NETMASK, *argv, 0); 596 } 597 } 598 } 599 if (forcehost) 600 ishost = 1; 601 if (forcenet) 602 ishost = 0; 603 flags |= RTF_UP; 604 if (ishost) 605 flags |= RTF_HOST; 606 if (iflag == 0) 607 flags |= RTF_GATEWAY; 608 for (attempts = 1; ; attempts++) { 609 errno = 0; 610 if ((ret = rtmsg(*cmd, flags)) == 0) 611 break; 612 if (errno != ENETUNREACH && errno != ESRCH) 613 break; 614 if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 615 hp->h_addr_list++; 616 bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr, 617 hp->h_length); 618 } else 619 break; 620 } 621 if (*cmd == 'g') 622 exit(0); 623 oerrno = errno; 624 (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 625 if (*gateway) { 626 (void) printf(": gateway %s", gateway); 627 if (attempts > 1 && ret == 0 && af == AF_INET) 628 (void) printf(" (%s)", 629 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 630 } 631 if (ret == 0) 632 (void) printf("\n"); 633 else { 634 switch (oerrno) { 635 case ESRCH: 636 err = "not in table"; 637 break; 638 case EBUSY: 639 err = "entry in use"; 640 break; 641 case ENOBUFS: 642 err = "routing table overflow"; 643 break; 644 default: 645 err = strerror(oerrno); 646 break; 647 } 648 (void) printf(": %s\n", err); 649 } 650 } 651 652 void 653 inet_makenetandmask(net, sin) 654 u_long net; 655 register struct sockaddr_in *sin; 656 { 657 u_long addr, mask = 0; 658 register char *cp; 659 660 rtm_addrs |= RTA_NETMASK; 661 if (net == 0) 662 mask = addr = 0; 663 else if (net < 128) { 664 addr = net << IN_CLASSA_NSHIFT; 665 mask = IN_CLASSA_NET; 666 } else if (net < 65536) { 667 addr = net << IN_CLASSB_NSHIFT; 668 mask = IN_CLASSB_NET; 669 } else if (net < 16777216L) { 670 addr = net << IN_CLASSC_NSHIFT; 671 mask = IN_CLASSC_NET; 672 } else { 673 addr = net; 674 if ((addr & IN_CLASSA_HOST) == 0) 675 mask = IN_CLASSA_NET; 676 else if ((addr & IN_CLASSB_HOST) == 0) 677 mask = IN_CLASSB_NET; 678 else if ((addr & IN_CLASSC_HOST) == 0) 679 mask = IN_CLASSC_NET; 680 else 681 mask = -1; 682 } 683 sin->sin_addr.s_addr = htonl(addr); 684 sin = &so_mask.sin; 685 sin->sin_addr.s_addr = htonl(mask); 686 sin->sin_len = 0; 687 sin->sin_family = 0; 688 cp = (char *)(&sin->sin_addr + 1); 689 while (*--cp == 0 && cp > (char *)sin) 690 ; 691 sin->sin_len = 1 + cp - (char *)sin; 692 } 693 694 /* 695 * Interpret an argument as a network address of some kind, 696 * returning 1 if a host address, 0 if a network address. 697 */ 698 int 699 getaddr(which, s, hpp) 700 int which; 701 char *s; 702 struct hostent **hpp; 703 { 704 register sup su; 705 struct ns_addr ns_addr(); 706 struct iso_addr *iso_addr(); 707 struct hostent *hp; 708 struct netent *np; 709 u_long val; 710 711 if (af == 0) { 712 af = AF_INET; 713 aflen = sizeof(struct sockaddr_in); 714 } 715 rtm_addrs |= which; 716 switch (which) { 717 case RTA_DST: 718 su = &so_dst; 719 su->sa.sa_family = af; 720 break; 721 case RTA_GATEWAY: 722 su = &so_gate; 723 su->sa.sa_family = af; 724 break; 725 case RTA_NETMASK: 726 su = &so_mask; 727 break; 728 case RTA_GENMASK: 729 su = &so_genmask; 730 break; 731 case RTA_IFP: 732 su = &so_ifp; 733 su->sa.sa_family = af; 734 break; 735 case RTA_IFA: 736 su = &so_ifa; 737 su->sa.sa_family = af; 738 break; 739 default: 740 usage("Internal Error"); 741 /*NOTREACHED*/ 742 } 743 su->sa.sa_len = aflen; 744 if (strcmp(s, "default") == 0) { 745 switch (which) { 746 case RTA_DST: 747 forcenet++; 748 (void) getaddr(RTA_NETMASK, s, 0); 749 break; 750 case RTA_NETMASK: 751 case RTA_GENMASK: 752 su->sa.sa_len = 0; 753 } 754 return (0); 755 } 756 switch (af) { 757 case AF_NS: 758 if (which == RTA_DST) { 759 extern short ns_bh[3]; 760 struct sockaddr_ns *sms = &(so_mask.sns); 761 bzero((char *)sms, sizeof(*sms)); 762 sms->sns_family = 0; 763 sms->sns_len = 6; 764 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 765 rtm_addrs |= RTA_NETMASK; 766 } 767 su->sns.sns_addr = ns_addr(s); 768 return (!ns_nullhost(su->sns.sns_addr)); 769 770 case AF_OSI: 771 su->siso.siso_addr = *iso_addr(s); 772 if (which == RTA_NETMASK || which == RTA_GENMASK) { 773 register char *cp = (char *)TSEL(&su->siso); 774 su->siso.siso_nlen = 0; 775 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 776 su->siso.siso_len = 1 + cp - (char *)su; 777 } 778 return (1); 779 780 case AF_LINK: 781 link_addr(s, &su->sdl); 782 return (1); 783 784 case AF_CCITT: 785 ccitt_addr(s, &su->sx25); 786 return (1); 787 788 case PF_ROUTE: 789 su->sa.sa_len = sizeof(*su); 790 sockaddr(s, &su->sa); 791 return (1); 792 793 case AF_INET: 794 default: 795 break; 796 } 797 798 if (hpp == NULL) 799 hpp = &hp; 800 *hpp = NULL; 801 if (((val = inet_addr(s)) != -1) && 802 (which != RTA_DST || forcenet == 0)) { 803 su->sin.sin_addr.s_addr = val; 804 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 805 return (1); 806 else { 807 val = ntohl(val); 808 goto netdone; 809 } 810 } 811 val = inet_network(s); 812 if (val == -1 && (np = getnetbyname(s)) != NULL) { 813 val = np->n_net; 814 netdone: 815 if (which == RTA_DST) 816 inet_makenetandmask(val, &su->sin); 817 return (0); 818 } 819 hp = gethostbyname(s); 820 if (hp) { 821 *hpp = hp; 822 su->sin.sin_family = hp->h_addrtype; 823 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, hp->h_length); 824 return (1); 825 } 826 (void) fprintf(stderr, "%s: bad value\n", s); 827 exit(1); 828 } 829 830 short ns_nullh[] = {0,0,0}; 831 short ns_bh[] = {-1,-1,-1}; 832 833 char * 834 ns_print(sns) 835 struct sockaddr_ns *sns; 836 { 837 struct ns_addr work; 838 union { union ns_net net_e; u_long long_e; } net; 839 u_short port; 840 static char mybuf[50], cport[10], chost[25]; 841 char *host = ""; 842 register char *p; 843 register u_char *q; 844 845 work = sns->sns_addr; 846 port = ntohs(work.x_port); 847 work.x_port = 0; 848 net.net_e = work.x_net; 849 if (ns_nullhost(work) && net.long_e == 0) { 850 if (!port) 851 return ("*.*"); 852 (void) sprintf(mybuf, "*.%XH", port); 853 return (mybuf); 854 } 855 856 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0) 857 host = "any"; 858 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0) 859 host = "*"; 860 else { 861 q = work.x_host.c_host; 862 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 863 q[0], q[1], q[2], q[3], q[4], q[5]); 864 for (p = chost; *p == '0' && p < chost + 12; p++) 865 /* void */; 866 host = p; 867 } 868 if (port) 869 (void) sprintf(cport, ".%XH", htons(port)); 870 else 871 *cport = 0; 872 873 (void) sprintf(mybuf,"%XH.%s%s", ntohl(net.long_e), host, cport); 874 return (mybuf); 875 } 876 877 void 878 monitor() 879 { 880 int n; 881 char msg[2048]; 882 883 verbose = 1; 884 for(;;) { 885 n = read(s, msg, 2048); 886 (void) printf("got message of size %d\n", n); 887 print_rtmsg((struct rt_msghdr *)msg); 888 } 889 } 890 891 struct { 892 struct rt_msghdr m_rtm; 893 char m_space[512]; 894 } m_rtmsg; 895 896 int 897 rtmsg(cmd, flags) 898 int cmd, flags; 899 { 900 static int seq; 901 int rlen; 902 register char *cp = m_rtmsg.m_space; 903 register int l; 904 905 #define NEXTADDR(w, u) \ 906 if (rtm_addrs & (w)) {\ 907 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 908 if (verbose) sodump(&(u),"u");\ 909 } 910 911 errno = 0; 912 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 913 if (cmd == 'a') 914 cmd = RTM_ADD; 915 else if (cmd == 'c') 916 cmd = RTM_CHANGE; 917 else if (cmd == 'g') { 918 cmd = RTM_GET; 919 if (so_ifp.sa.sa_family == 0) { 920 so_ifp.sa.sa_family == AF_LINK; 921 so_ifp.sa.sa_len == sizeof(struct sockaddr_dl); 922 rtm_addrs |= RTA_IFP; 923 } 924 } else 925 cmd = RTM_DELETE; 926 #define rtm m_rtmsg.m_rtm 927 rtm.rtm_type = cmd; 928 rtm.rtm_flags = flags; 929 rtm.rtm_version = RTM_VERSION; 930 rtm.rtm_seq = ++seq; 931 rtm.rtm_addrs = rtm_addrs; 932 rtm.rtm_rmx = rt_metrics; 933 rtm.rtm_inits = rtm_inits; 934 935 if (rtm_addrs & RTA_NETMASK) 936 mask_addr(); 937 NEXTADDR(RTA_DST, so_dst); 938 NEXTADDR(RTA_GATEWAY, so_gate); 939 NEXTADDR(RTA_NETMASK, so_mask); 940 NEXTADDR(RTA_GENMASK, so_genmask); 941 NEXTADDR(RTA_IFP, so_ifp); 942 NEXTADDR(RTA_IFA, so_ifa); 943 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 944 if (verbose) 945 print_rtmsg(&rtm, l); 946 if (debugonly) 947 return (0); 948 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 949 perror("writing to routing socket"); 950 return (-1); 951 } 952 if (cmd == RTM_GET) { 953 do { 954 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 955 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 956 if (l < 0) 957 (void) fprintf(stderr, 958 "route: read from routing socket: %s\n", 959 strerror(errno)); 960 else 961 print_getmsg(&rtm, l); 962 } 963 #undef rtm 964 return (0); 965 } 966 967 mask_addr() 968 { 969 int olen = so_mask.sa.sa_len; 970 register char *cp1 = olen + (char *)&so_mask, *cp2; 971 972 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 973 if (*--cp1 != 0) { 974 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 975 break; 976 } 977 if ((rtm_addrs & RTA_DST) == 0) 978 return; 979 switch (so_dst.sa.sa_family) { 980 case AF_NS: 981 case AF_INET: 982 case AF_CCITT: 983 case 0: 984 return; 985 case AF_ISO: 986 olen = MIN(so_dst.siso.siso_nlen, so_mask.sa.sa_len - 6); 987 break; 988 } 989 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 990 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 991 while (cp2 > cp1) 992 *--cp2 = 0; 993 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 994 while (cp1 > so_dst.sa.sa_data) 995 *--cp1 &= *--cp2; 996 switch (so_dst.sa.sa_family) { 997 case AF_ISO: 998 so_dst.siso.siso_nlen = olen; 999 break; 1000 } 1001 } 1002 1003 char *msgtypes[] = { 1004 "", 1005 "RTM_ADD: Add Route", 1006 "RTM_DELETE: Delete Route", 1007 "RTM_CHANGE: Change Metrics or flags", 1008 "RTM_GET: Report Metrics", 1009 "RTM_LOSING: Kernel Suspects Partitioning", 1010 "RTM_REDIRECT: Told to use different route", 1011 "RTM_MISS: Lookup failed on this address", 1012 "RTM_LOCK: fix specified metrics", 1013 "RTM_OLDADD: caused by SIOCADDRT", 1014 "RTM_OLDDEL: caused by SIOCDELRT", 1015 0, 1016 }; 1017 1018 char metricnames[] = 1019 "\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 1020 char routeflags[] = 1021 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\017PROTO2\020PROTO1"; 1022 1023 1024 void 1025 print_rtmsg(rtm, msglen) 1026 register struct rt_msghdr *rtm; 1027 int msglen; 1028 { 1029 if (verbose == 0) 1030 return; 1031 if (rtm->rtm_version != RTM_VERSION) { 1032 (void) printf("routing message version %d not understood\n", 1033 rtm->rtm_version); 1034 return; 1035 } 1036 (void) printf("%s\npid: %d, len %d, seq %d, errno %d, flags:", 1037 msgtypes[rtm->rtm_type], rtm->rtm_pid, rtm->rtm_msglen, 1038 rtm->rtm_seq, rtm->rtm_errno); 1039 bprintf(stdout, rtm->rtm_flags, routeflags); 1040 pmsg_common(rtm); 1041 } 1042 1043 void 1044 print_getmsg(rtm, msglen) 1045 register struct rt_msghdr *rtm; 1046 int msglen; 1047 { 1048 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1049 struct sockaddr_dl *ifp = NULL; 1050 register struct sockaddr *sa; 1051 register char *cp; 1052 register int i; 1053 1054 (void) printf(" route to: %s\n", routename(&so_dst)); 1055 if (rtm->rtm_version != RTM_VERSION) { 1056 (void)fprintf(stderr, 1057 "routing message version %d not understood\n", 1058 rtm->rtm_version); 1059 return; 1060 } 1061 if (rtm->rtm_msglen > msglen) { 1062 (void)fprintf(stderr, 1063 "message length mismatch, in packet %d, returned %d\n", 1064 rtm->rtm_msglen, msglen); 1065 } 1066 if (rtm->rtm_errno) { 1067 (void) fprintf(stderr, "RTM_GET: %s (errno %d)\n", 1068 strerror(rtm->rtm_errno), rtm->rtm_errno); 1069 return; 1070 } 1071 cp = ((char *)(rtm + 1)); 1072 if (rtm->rtm_addrs) 1073 for (i = 1; i; i <<= 1) 1074 if (i & rtm->rtm_addrs) { 1075 sa = (struct sockaddr *)cp; 1076 switch (i) { 1077 case RTA_DST: 1078 dst = sa; 1079 break; 1080 case RTA_GATEWAY: 1081 gate = sa; 1082 break; 1083 case RTA_NETMASK: 1084 mask = sa; 1085 break; 1086 case RTA_IFP: 1087 if (sa->sa_family == AF_LINK && 1088 ((struct sockaddr_dl *)sa)->sdl_nlen) 1089 ifp = (struct sockaddr_dl *)sa; 1090 break; 1091 } 1092 ADVANCE(cp, sa); 1093 } 1094 if (dst && mask) 1095 mask->sa_family = dst->sa_family; /* XXX */ 1096 if (dst) 1097 (void)printf("destination: %s\n", routename(dst)); 1098 if (mask) { 1099 int savenflag = nflag; 1100 1101 nflag = 1; 1102 (void)printf(" mask: %s\n", routename(mask)); 1103 nflag = savenflag; 1104 } 1105 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1106 (void)printf(" gateway: %s\n", routename(gate)); 1107 if (ifp) 1108 (void)printf(" interface: %.*s\n", 1109 ifp->sdl_nlen, ifp->sdl_data); 1110 (void)printf(" flags: "); 1111 bprintf(stdout, rtm->rtm_flags, routeflags); 1112 1113 #define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1114 #define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1115 1116 (void) printf("\n%s\n", "\ 1117 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1118 printf("%8d%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1119 printf("%8d%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1120 printf("%8d%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1121 printf("%8d%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1122 printf("%8d%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1123 printf("%8d%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1124 printf("%8d%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1125 if (rtm->rtm_rmx.rmx_expire) 1126 rtm->rtm_rmx.rmx_expire -= time(0); 1127 printf("%8d%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1128 #undef lock 1129 #undef msec 1130 #define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA) 1131 if (verbose) 1132 pmsg_common(rtm); 1133 else if (rtm->rtm_addrs &~ RTA_IGN) { 1134 (void) printf("sockaddrs: "); 1135 bprintf(stdout, rtm->rtm_addrs, 1136 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR"); 1137 putchar('\n'); 1138 } 1139 #undef RTA_IGN 1140 } 1141 1142 void 1143 pmsg_common(rtm) 1144 register struct rt_msghdr *rtm; 1145 { 1146 char *cp; 1147 register struct sockaddr *sa; 1148 int i; 1149 1150 (void) printf("\nlocks: "); 1151 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1152 (void) printf(" inits: "); 1153 bprintf(stdout, rtm->rtm_inits, metricnames); 1154 (void) printf("\nsockaddrs: "); 1155 bprintf(stdout, rtm->rtm_addrs, 1156 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR"); 1157 (void) putchar('\n'); 1158 cp = ((char *)(rtm + 1)); 1159 if (rtm->rtm_addrs) 1160 for (i = 1; i; i <<= 1) 1161 if (i & rtm->rtm_addrs) { 1162 sa = (struct sockaddr *)cp; 1163 (void) printf(" %s", routename(sa)); 1164 ADVANCE(cp, sa); 1165 } 1166 (void) putchar('\n'); 1167 (void) fflush(stdout); 1168 } 1169 1170 void 1171 bprintf(fp, b, s) 1172 register FILE *fp; 1173 register int b; 1174 register u_char *s; 1175 { 1176 register int i; 1177 int gotsome = 0; 1178 1179 if (b == 0) 1180 return; 1181 while (i = *s++) { 1182 if (b & (1 << (i-1))) { 1183 if (gotsome == 0) 1184 i = '<'; 1185 else 1186 i = ','; 1187 (void) putc(i, fp); 1188 gotsome = 1; 1189 for (; (i = *s) > 32; s++) 1190 (void) putc(i, fp); 1191 } else 1192 while (*s > 32) 1193 s++; 1194 } 1195 if (gotsome) 1196 (void) putc('>', fp); 1197 } 1198 1199 int 1200 keyword(cp) 1201 char *cp; 1202 { 1203 register struct keytab *kt = keywords; 1204 1205 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1206 kt++; 1207 return kt->kt_i; 1208 } 1209 1210 void 1211 sodump(su, which) 1212 register sup su; 1213 char *which; 1214 { 1215 switch (su->sa.sa_family) { 1216 case AF_LINK: 1217 (void) printf("%s: link %s; ", 1218 which, link_ntoa(&su->sdl)); 1219 break; 1220 case AF_ISO: 1221 (void) printf("%s: iso %s; ", 1222 which, iso_ntoa(&su->siso.siso_addr)); 1223 break; 1224 case AF_INET: 1225 (void) printf("%s: inet %s; ", 1226 which, inet_ntoa(su->sin.sin_addr)); 1227 break; 1228 case AF_NS: 1229 (void) printf("%s: xns %s; ", 1230 which, ns_ntoa(su->sns.sns_addr)); 1231 break; 1232 } 1233 (void) fflush(stdout); 1234 } 1235 1236 /* States*/ 1237 #define VIRGIN 0 1238 #define GOTONE 1 1239 #define GOTTWO 2 1240 /* Inputs */ 1241 #define DIGIT (4*0) 1242 #define END (4*1) 1243 #define DELIM (4*2) 1244 1245 void 1246 sockaddr(addr, sa) 1247 register char *addr; 1248 register struct sockaddr *sa; 1249 { 1250 register char *cp = (char *)sa; 1251 int size = sa->sa_len; 1252 char *cplim = cp + size; 1253 register int byte = 0, state = VIRGIN, new; 1254 1255 bzero(cp, size); 1256 cp++; 1257 do { 1258 if ((*addr >= '0') && (*addr <= '9')) { 1259 new = *addr - '0'; 1260 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1261 new = *addr - 'a' + 10; 1262 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1263 new = *addr - 'A' + 10; 1264 } else if (*addr == 0) 1265 state |= END; 1266 else 1267 state |= DELIM; 1268 addr++; 1269 switch (state /* | INPUT */) { 1270 case GOTTWO | DIGIT: 1271 *cp++ = byte; /*FALLTHROUGH*/ 1272 case VIRGIN | DIGIT: 1273 state = GOTONE; byte = new; continue; 1274 case GOTONE | DIGIT: 1275 state = GOTTWO; byte = new + (byte << 4); continue; 1276 default: /* | DELIM */ 1277 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1278 case GOTONE | END: 1279 case GOTTWO | END: 1280 *cp++ = byte; /* FALLTHROUGH */ 1281 case VIRGIN | END: 1282 break; 1283 } 1284 break; 1285 } while (cp < cplim); 1286 sa->sa_len = cp - (char *)sa; 1287 } 1288