1 /* 2 * Copyright (c) 1983, 1989 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 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 5.33 (Berkeley) 04/24/91"; 16 #endif /* not lint */ 17 18 #include <sys/param.h> 19 #include <sys/socket.h> 20 #include <sys/ioctl.h> 21 #include <sys/mbuf.h> 22 #include <sys/kinfo.h> 23 24 #include <net/route.h> 25 #include <net/if_dl.h> 26 #include <netinet/in.h> 27 #include <netns/ns.h> 28 #include <netiso/iso.h> 29 #include <arpa/inet.h> 30 #include <netdb.h> 31 32 #include <errno.h> 33 #include <unistd.h> 34 #include <stdio.h> 35 #include <ctype.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include <paths.h> 39 40 struct keytab { 41 char *kt_cp; 42 int kt_i; 43 } keywords[] = { 44 #include "keywords.h" 45 {0, 0} 46 }; 47 48 struct ortentry route; 49 union sockunion { 50 struct sockaddr sa; 51 struct sockaddr_in sin; 52 struct sockaddr_ns sns; 53 struct sockaddr_iso siso; 54 struct sockaddr_dl sdl; 55 } so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 56 57 union sockunion *so_addrs[] = 58 { &so_dst, &so_gate, &so_mask, &so_genmask, &so_ifp, &so_ifa, 0}; 59 60 typedef union sockunion *sup; 61 int pid, rtm_addrs, uid; 62 int s; 63 int forcehost, forcenet, doflush, nflag, af, qflag, Cflag, 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(); 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 [ -Cnqv ] 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, "Cnqv")) != EOF) 118 switch(ch) { 119 case 'C': 120 Cflag = 1; /* Use old ioctls. */ 121 break; 122 case 'n': 123 nflag = 1; 124 break; 125 case 'q': 126 qflag = 1; 127 break; 128 case 'v': 129 verbose = 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 (Cflag) 141 s = socket(AF_INET, SOCK_RAW, 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 if (Cflag) 154 usage("change or get with -C"); 155 /* FALLTHROUGH */ 156 157 case K_ADD: 158 case K_DELETE: 159 newroute(argc, argv); 160 exit(0); 161 /* NOTREACHED */ 162 163 case K_MONITOR: 164 monitor(); 165 /* NOTREACHED */ 166 167 case K_FLUSH: 168 flushroutes(argc, argv); 169 exit(0); 170 /* NOTREACHED */ 171 } 172 usage(*argv); 173 /* NOTREACHED */ 174 } 175 176 /* 177 * Purge all entries in the routing tables not 178 * associated with network interfaces. 179 */ 180 void 181 flushroutes(argc, argv) 182 int argc; 183 char *argv[]; 184 { 185 int needed, seqno, rlen; 186 char *buf, *next, *lim; 187 register struct rt_msghdr *rtm; 188 189 if (uid) 190 quit("must be root to alter routing table"); 191 shutdown(s, 0); /* Don't want to read back our messages */ 192 if (argc > 1) { 193 argv++; 194 if (argc == 2 && **argv == '-') 195 switch (keyword(*argv + 1)) { 196 case K_INET: 197 af = AF_INET; 198 break; 199 case K_XNS: 200 af = AF_NS; 201 break; 202 case K_LINK: 203 af = AF_LINK; 204 break; 205 case K_ISO: 206 case K_OSI: 207 af = AF_ISO; 208 break; 209 default: 210 goto bad; 211 } else 212 bad: usage(*argv); 213 } 214 if ((needed = getkerninfo(KINFO_RT_DUMP, 0, 0, 0)) < 0) 215 quit("route-getkerninfo-estimate"); 216 if ((buf = malloc(needed)) == NULL) 217 quit("malloc"); 218 if ((rlen = getkerninfo(KINFO_RT_DUMP, buf, &needed, 0)) < 0) 219 quit("actual retrieval of routing table"); 220 lim = buf + rlen; 221 seqno = 0; /* ??? */ 222 for (next = buf; next < lim; next += rtm->rtm_msglen) { 223 rtm = (struct rt_msghdr *)next; 224 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 225 continue; 226 if (af) { 227 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 228 229 if (sa->sa_family != af) 230 continue; 231 } 232 rtm->rtm_type = RTM_DELETE; 233 rtm->rtm_seq = seqno; 234 rlen = write(s, next, rtm->rtm_msglen); 235 if (rlen < (int)rtm->rtm_msglen) { 236 (void) fprintf(stderr, 237 "route: write to routing socket: %s\n", 238 strerror(errno)); 239 (void) printf("got only %d for rlen\n", rlen); 240 break; 241 } 242 seqno++; 243 if (qflag) 244 continue; 245 if (verbose) 246 print_rtmsg(rtm, rlen); 247 else { 248 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 249 (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 250 routename(sa) : netname(sa)); 251 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 252 (void) printf("%-20.20s ", routename(sa)); 253 (void) printf("done\n"); 254 } 255 } 256 } 257 258 char * 259 routename(sa) 260 struct sockaddr *sa; 261 { 262 register char *cp; 263 static char line[50]; 264 struct hostent *hp; 265 static char domain[MAXHOSTNAMELEN + 1]; 266 static int first = 1; 267 char *ns_print(); 268 269 if (first) { 270 first = 0; 271 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 272 (cp = index(domain, '.'))) 273 (void) strcpy(domain, cp + 1); 274 else 275 domain[0] = 0; 276 } 277 switch (sa->sa_family) { 278 279 case AF_INET: 280 { struct in_addr in; 281 in = ((struct sockaddr_in *)sa)->sin_addr; 282 283 cp = 0; 284 if (in.s_addr == INADDR_ANY) 285 cp = "default"; 286 if (cp == 0 && !nflag) { 287 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 288 AF_INET); 289 if (hp) { 290 if ((cp = index(hp->h_name, '.')) && 291 !strcmp(cp + 1, domain)) 292 *cp = 0; 293 cp = hp->h_name; 294 } 295 } 296 if (cp) 297 strcpy(line, cp); 298 else { 299 #define C(x) ((x) & 0xff) 300 in.s_addr = ntohl(in.s_addr); 301 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 302 C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr)); 303 } 304 break; 305 } 306 307 case AF_NS: 308 return (ns_print((struct sockaddr_ns *)sa)); 309 310 case AF_LINK: 311 return (link_ntoa((struct sockaddr_dl *)sa)); 312 313 case AF_ISO: 314 (void) sprintf(line, "iso %s", 315 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 316 break; 317 318 default: 319 { u_short *s = (u_short *)sa->sa_data; 320 u_short *slim = s + ((sa->sa_len + 1) >> 1); 321 char *cp = line + sprintf(line, "(%d)", sa->sa_family); 322 323 while (s < slim) 324 cp += sprintf(cp, " %x", *s++); 325 break; 326 } 327 } 328 return (line); 329 } 330 331 /* 332 * Return the name of the network whose address is given. 333 * The address is assumed to be that of a net or subnet, not a host. 334 */ 335 char * 336 netname(sa) 337 struct sockaddr *sa; 338 { 339 char *cp = 0; 340 static char line[50]; 341 struct netent *np = 0; 342 u_long net, mask; 343 register u_long i; 344 int subnetshift; 345 char *ns_print(); 346 347 switch (sa->sa_family) { 348 349 case AF_INET: 350 { struct in_addr in; 351 in = ((struct sockaddr_in *)sa)->sin_addr; 352 353 i = in.s_addr = ntohl(in.s_addr); 354 if (in.s_addr == 0) 355 cp = "default"; 356 else if (!nflag) { 357 if (IN_CLASSA(i)) { 358 mask = IN_CLASSA_NET; 359 subnetshift = 8; 360 } else if (IN_CLASSB(i)) { 361 mask = IN_CLASSB_NET; 362 subnetshift = 8; 363 } else { 364 mask = IN_CLASSC_NET; 365 subnetshift = 4; 366 } 367 /* 368 * If there are more bits than the standard mask 369 * would suggest, subnets must be in use. 370 * Guess at the subnet mask, assuming reasonable 371 * width subnet fields. 372 */ 373 while (in.s_addr &~ mask) 374 mask = (long)mask >> subnetshift; 375 net = in.s_addr & mask; 376 while ((mask & 1) == 0) 377 mask >>= 1, net >>= 1; 378 np = getnetbyaddr(net, AF_INET); 379 if (np) 380 cp = np->n_name; 381 } 382 if (cp) 383 strcpy(line, cp); 384 else if ((in.s_addr & 0xffffff) == 0) 385 (void) sprintf(line, "%u", C(in.s_addr >> 24)); 386 else if ((in.s_addr & 0xffff) == 0) 387 (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 388 C(in.s_addr >> 16)); 389 else if ((in.s_addr & 0xff) == 0) 390 (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 391 C(in.s_addr >> 16), C(in.s_addr >> 8)); 392 else 393 (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 394 C(in.s_addr >> 16), C(in.s_addr >> 8), 395 C(in.s_addr)); 396 break; 397 } 398 399 case AF_NS: 400 return (ns_print((struct sockaddr_ns *)sa)); 401 break; 402 403 case AF_LINK: 404 return (link_ntoa((struct sockaddr_dl *)sa)); 405 406 case AF_ISO: 407 (void) sprintf(line, "iso %s", 408 iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr)); 409 break; 410 411 default: 412 { u_short *s = (u_short *)sa->sa_data; 413 u_short *slim = s + ((sa->sa_len + 1)>>1); 414 char *cp = line + sprintf(line, "af %d:", sa->sa_family); 415 416 while (s < slim) 417 cp += sprintf(cp, " %x", *s++); 418 break; 419 } 420 } 421 return (line); 422 } 423 424 void 425 set_metric(value, key) 426 char *value; 427 int key; 428 { 429 int flag = 0; 430 u_long noval, *valp = &noval; 431 432 switch (key) { 433 #define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 434 caseof(K_MTU, RTV_MTU, rmx_mtu); 435 caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 436 caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 437 caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 438 caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 439 caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 440 caseof(K_RTT, RTV_RTT, rmx_rtt); 441 caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 442 } 443 rtm_inits |= flag; 444 if (lockrest || locking) 445 rt_metrics.rmx_locks |= flag; 446 if (locking) 447 locking = 0; 448 *valp = atoi(value); 449 } 450 451 void 452 newroute(argc, argv) 453 int argc; 454 register char **argv; 455 { 456 char *cmd, *dest = "", *gateway = "", *err; 457 int ishost = 0, ret, attempts, oerrno, flags = 0; 458 int key; 459 struct hostent *hp = 0; 460 461 if (uid) 462 quit("must be root to alter routing table"); 463 cmd = argv[0]; 464 if (*cmd != 'g') 465 shutdown(s, 0); /* Don't want to read back our messages */ 466 while (--argc > 0) { 467 if (**(++argv)== '-') { 468 switch (key = keyword(1 + *argv)) { 469 case K_LINK: 470 af = AF_LINK; 471 aflen = sizeof(struct sockaddr_dl); 472 break; 473 case K_OSI: 474 case K_ISO: 475 af = AF_ISO; 476 aflen = sizeof(struct sockaddr_iso); 477 break; 478 case K_INET: 479 af = AF_INET; 480 aflen = sizeof(struct sockaddr_in); 481 break; 482 case K_XNS: 483 af = AF_NS; 484 aflen = sizeof(struct sockaddr_ns); 485 break; 486 case K_IFACE: 487 case K_INTERFACE: 488 iflag++; 489 break; 490 case K_LOCK: 491 locking = 1; 492 break; 493 case K_LOCKREST: 494 lockrest = 1; 495 break; 496 case K_HOST: 497 forcehost++; 498 break; 499 case K_REJECT: 500 flags |= RTF_REJECT; 501 break; 502 case K_CLONING: 503 flags |= RTF_CLONING; 504 break; 505 case K_XRESOLVE: 506 flags |= RTF_XRESOLVE; 507 break; 508 case K_IFA: 509 argc--; 510 (void) getaddr(RTA_IFA, *++argv, 0); 511 break; 512 case K_IFP: 513 argc--; 514 (void) getaddr(RTA_IFP, *++argv, 0); 515 break; 516 case K_GENMASK: 517 argc--; 518 (void) getaddr(RTA_GENMASK, *++argv, 0); 519 break; 520 case K_GATEWAY: 521 argc--; 522 (void) getaddr(RTA_GATEWAY, *++argv, 0); 523 break; 524 case K_DST: 525 argc--; 526 ishost = getaddr(RTA_DST, *++argv, &hp); 527 dest = *argv; 528 break; 529 case K_NETMASK: 530 argc--; 531 (void) getaddr(RTA_NETMASK, *++argv, 0); 532 /* FALLTHROUGH */ 533 case K_NET: 534 forcenet++; 535 break; 536 case K_MTU: 537 case K_HOPCOUNT: 538 case K_EXPIRE: 539 case K_RECVPIPE: 540 case K_SENDPIPE: 541 case K_SSTHRESH: 542 case K_RTT: 543 case K_RTTVAR: 544 argc--; 545 set_metric(*++argv, key); 546 break; 547 default: 548 usage(1+*argv); 549 } 550 } else { 551 if ((rtm_addrs & RTA_DST) == 0) { 552 dest = *argv; 553 ishost = getaddr(RTA_DST, *argv, &hp); 554 } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 555 gateway = *argv; 556 (void) getaddr(RTA_GATEWAY, *argv, &hp); 557 } else { 558 int ret = atoi(*argv); 559 if (ret == 0) { 560 printf("%s,%s", "old usage of trailing 0", 561 "assuming route to if\n"); 562 iflag = 1; 563 continue; 564 } else if (ret > 0 && ret < 10) { 565 printf("old usage of trailing digit, "); 566 printf("assuming route via gateway\n"); 567 iflag = 0; 568 continue; 569 } 570 (void) getaddr(RTA_NETMASK, *argv, 0); 571 } 572 } 573 } 574 if (forcehost) 575 ishost = 1; 576 if (forcenet) 577 ishost = 0; 578 flags |= RTF_UP; 579 if (ishost) 580 flags |= RTF_HOST; 581 if (iflag == 0) 582 flags |= RTF_GATEWAY; 583 for (attempts = 1; ; attempts++) { 584 errno = 0; 585 if (Cflag && (af == AF_INET || af == AF_NS)) { 586 route.rt_flags = flags; 587 route.rt_dst = so_dst.sa; 588 route.rt_gateway = so_gate.sa; 589 if ((ret = ioctl(s, *cmd == 'a' ? SIOCADDRT : SIOCDELRT, 590 (caddr_t)&route)) == 0) 591 break; 592 } else { 593 if ((ret = rtmsg(*cmd, flags)) == 0) 594 break; 595 } 596 if (errno != ENETUNREACH && errno != ESRCH) 597 break; 598 if (af == AF_INET && hp && hp->h_addr_list[1]) { 599 hp->h_addr_list++; 600 bcopy(hp->h_addr_list[0], (caddr_t)&so_dst.sin.sin_addr, 601 hp->h_length); 602 } else 603 break; 604 } 605 if (*cmd == 'g') 606 exit(0); 607 oerrno = errno; 608 (void) printf("%s %s %s: gateway %s", cmd, ishost? "host" : "net", 609 dest, gateway); 610 if (attempts > 1 && ret == 0) 611 (void) printf(" (%s)", 612 inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 613 if (ret == 0) 614 (void) printf("\n"); 615 else { 616 switch (oerrno) { 617 case ESRCH: 618 err = "not in table"; 619 break; 620 case EBUSY: 621 err = "entry in use"; 622 break; 623 case ENOBUFS: 624 err = "routing table overflow"; 625 break; 626 default: 627 err = strerror(oerrno); 628 break; 629 } 630 (void) printf(": %s\n", err); 631 } 632 } 633 634 void 635 inet_makenetandmask(net, sin) 636 u_long net; 637 register struct sockaddr_in *sin; 638 { 639 u_long addr, mask = 0; 640 register char *cp; 641 642 rtm_addrs |= RTA_NETMASK; 643 if (net == 0) 644 mask = addr = 0; 645 else if (net < 128) { 646 addr = net << IN_CLASSA_NSHIFT; 647 mask = IN_CLASSA_NET; 648 } else if (net < 65536) { 649 addr = net << IN_CLASSB_NSHIFT; 650 mask = IN_CLASSB_NET; 651 } else if (net < 16777216L) { 652 addr = net << IN_CLASSC_NSHIFT; 653 mask = IN_CLASSC_NET; 654 } else { 655 addr = net; 656 if ((addr & IN_CLASSA_HOST) == 0) 657 mask = IN_CLASSA_NET; 658 else if ((addr & IN_CLASSB_HOST) == 0) 659 mask = IN_CLASSB_NET; 660 else if ((addr & IN_CLASSC_HOST) == 0) 661 mask = IN_CLASSC_NET; 662 else 663 mask = -1; 664 } 665 sin->sin_addr.s_addr = htonl(addr); 666 sin = &so_mask.sin; 667 sin->sin_addr.s_addr = htonl(mask); 668 sin->sin_len = 0; 669 sin->sin_family = 0; 670 cp = (char *)(&sin->sin_addr + 1); 671 while (*--cp == 0 && cp > (char *)sin) 672 ; 673 sin->sin_len = 1 + cp - (char *)sin; 674 } 675 676 /* 677 * Interpret an argument as a network address of some kind, 678 * returning 1 if a host address, 0 if a network address. 679 */ 680 int 681 getaddr(which, s, hpp) 682 int which; 683 char *s; 684 struct hostent **hpp; 685 { 686 register sup su; 687 struct ns_addr ns_addr(); 688 struct iso_addr *iso_addr(); 689 struct hostent *hp; 690 struct netent *np; 691 u_long val; 692 693 if (af == 0) { 694 af = AF_INET; 695 aflen = sizeof(struct sockaddr_in); 696 } 697 rtm_addrs |= which; 698 switch (which) { 699 case RTA_DST: su = so_addrs[0]; su->sa.sa_family = af; break; 700 case RTA_GATEWAY: su = so_addrs[1]; su->sa.sa_family = af; break; 701 case RTA_NETMASK: su = so_addrs[2]; break; 702 case RTA_GENMASK: su = so_addrs[3]; break; 703 case RTA_IFP: su = so_addrs[4]; su->sa.sa_family = af; break; 704 case RTA_IFA: su = so_addrs[5]; su->sa.sa_family = af; break; 705 default: usage("Internal Error"); /*NOTREACHED*/ 706 } 707 su->sa.sa_len = aflen; 708 if (strcmp(s, "default") == 0) { 709 switch (which) { 710 case RTA_DST: 711 forcenet++; 712 (void) getaddr(RTA_NETMASK, s, 0); 713 break; 714 case RTA_NETMASK: 715 case RTA_GENMASK: 716 su->sa.sa_len = 0; 717 } 718 return 0; 719 } 720 if (af == AF_NS) 721 goto do_xns; 722 if (af == AF_OSI) 723 goto do_osi; 724 if (af == AF_LINK) 725 goto do_link; 726 if (hpp == NULL) 727 hpp = &hp; 728 *hpp = NULL; 729 if (((val = inet_addr(s)) != -1) && 730 (which != RTA_DST || forcenet == 0)) { 731 su->sin.sin_addr.s_addr = val; 732 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 733 return (1); 734 else { 735 val = ntohl(val); 736 out: if (which == RTA_DST) 737 inet_makenetandmask(val, &su->sin); 738 return (0); 739 } 740 } 741 val = inet_network(s); 742 if (val != -1) { 743 goto out; 744 } 745 np = getnetbyname(s); 746 if (np) { 747 val = np->n_net; 748 goto out; 749 } 750 hp = gethostbyname(s); 751 if (hp) { 752 *hpp = hp; 753 su->sin.sin_family = hp->h_addrtype; 754 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, hp->h_length); 755 return (1); 756 } 757 (void) fprintf(stderr, "%s: bad value\n", s); 758 exit(1); 759 do_xns: 760 if (which == RTA_DST) { 761 extern short ns_bh[3]; 762 struct sockaddr_ns *sms = &(so_mask.sns); 763 bzero((char *)sms, sizeof(*sms)); 764 sms->sns_family = 0; 765 sms->sns_len = 6; 766 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 767 rtm_addrs |= RTA_NETMASK; 768 } 769 su->sns.sns_addr = ns_addr(s); 770 return (!ns_nullhost(su->sns.sns_addr)); 771 do_osi: 772 su->siso.siso_addr = *iso_addr(s); 773 if (which == RTA_NETMASK || which == RTA_GENMASK) { 774 register char *cp = (char *)TSEL(&su->siso); 775 su->siso.siso_nlen = 0; 776 do {--cp ;} while ((cp > (char *)su) && (*cp == 0)); 777 su->siso.siso_len = 1 + cp - (char *)su; 778 } 779 return (1); 780 do_link: 781 link_addr(s, &su->sdl); 782 return (1); 783 } 784 785 short ns_nullh[] = {0,0,0}; 786 short ns_bh[] = {-1,-1,-1}; 787 788 char * 789 ns_print(sns) 790 struct sockaddr_ns *sns; 791 { 792 struct ns_addr work; 793 union { union ns_net net_e; u_long long_e; } net; 794 u_short port; 795 static char mybuf[50], cport[10], chost[25]; 796 char *host = ""; 797 register char *p; 798 register u_char *q; 799 800 work = sns->sns_addr; 801 port = ntohs(work.x_port); 802 work.x_port = 0; 803 net.net_e = work.x_net; 804 if (ns_nullhost(work) && net.long_e == 0) { 805 if (!port) 806 return ("*.*"); 807 (void) sprintf(mybuf, "*.%XH", port); 808 return (mybuf); 809 } 810 811 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0) 812 host = "any"; 813 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0) 814 host = "*"; 815 else { 816 q = work.x_host.c_host; 817 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 818 q[0], q[1], q[2], q[3], q[4], q[5]); 819 for (p = chost; *p == '0' && p < chost + 12; p++) 820 /* void */; 821 host = p; 822 } 823 if (port) 824 (void) sprintf(cport, ".%XH", htons(port)); 825 else 826 *cport = 0; 827 828 (void) sprintf(mybuf,"%XH.%s%s", ntohl(net.long_e), host, cport); 829 return (mybuf); 830 } 831 832 void 833 monitor() 834 { 835 int n; 836 char msg[2048]; 837 838 verbose = 1; 839 for(;;) { 840 n = read(s, msg, 2048); 841 (void) printf("got message of size %d\n", n); 842 print_rtmsg((struct rt_msghdr *)msg); 843 } 844 } 845 846 struct { 847 struct rt_msghdr m_rtm; 848 char m_space[512]; 849 } m_rtmsg; 850 851 int 852 rtmsg(cmd, flags) 853 int cmd, flags; 854 { 855 static int seq; 856 int rlen; 857 register char *cp = m_rtmsg.m_space; 858 register int l; 859 860 #define NEXTADDR(w, u) \ 861 if (rtm_addrs & (w)) {\ 862 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 863 if (verbose) sodump(&(u),"u");\ 864 } 865 866 errno = 0; 867 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 868 if (cmd == 'a') 869 cmd = RTM_ADD; 870 else if (cmd == 'c') 871 cmd = RTM_CHANGE; 872 else if (cmd == 'g') 873 cmd = RTM_GET; 874 else 875 cmd = RTM_DELETE; 876 #define rtm m_rtmsg.m_rtm 877 rtm.rtm_type = cmd; 878 rtm.rtm_flags = flags; 879 rtm.rtm_version = RTM_VERSION; 880 rtm.rtm_seq = ++seq; 881 rtm.rtm_addrs = rtm_addrs; 882 rtm.rtm_rmx = rt_metrics; 883 rtm.rtm_inits = rtm_inits; 884 885 NEXTADDR(RTA_DST, so_dst); 886 NEXTADDR(RTA_GATEWAY, so_gate); 887 NEXTADDR(RTA_NETMASK, so_mask); 888 NEXTADDR(RTA_GENMASK, so_genmask); 889 NEXTADDR(RTA_IFP, so_ifp); 890 NEXTADDR(RTA_IFA, so_ifa); 891 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 892 if (verbose) 893 print_rtmsg(&rtm, l); 894 if (debugonly) 895 return 0; 896 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 897 perror("writing to routing socket"); 898 return (-1); 899 } 900 if (cmd == RTM_GET) { 901 do { 902 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 903 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 904 if (l < 0) 905 (void) fprintf(stderr, 906 "route: read from routing socket: %s\n", 907 strerror(errno)); 908 else 909 print_getmsg(&rtm, l); 910 } 911 #undef rtm 912 return (0); 913 } 914 915 char *msgtypes[] = { 916 "", 917 "RTM_ADD: Add Route", 918 "RTM_DELETE: Delete Route", 919 "RTM_CHANGE: Change Metrics or flags", 920 "RTM_GET: Report Metrics", 921 "RTM_LOSING: Kernel Suspects Partitioning", 922 "RTM_REDIRECT: Told to use different route", 923 "RTM_MISS: Lookup failed on this address", 924 "RTM_LOCK: fix specified metrics", 925 "RTM_OLDADD: caused by SIOCADDRT", 926 "RTM_OLDDEL: caused by SIOCDELRT", 927 0, 928 }; 929 930 char metricnames[] = 931 "\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu"; 932 char routeflags[] = 933 "\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE"; 934 935 936 void 937 print_rtmsg(rtm, msglen) 938 register struct rt_msghdr *rtm; 939 int msglen; 940 { 941 if (verbose == 0) 942 return; 943 if (rtm->rtm_version != RTM_VERSION) { 944 (void) printf("routing message version %d not understood\n", 945 rtm->rtm_version); 946 return; 947 } 948 (void) printf("%s\npid: %d, len %d, seq %d, errno %d, flags:", 949 msgtypes[rtm->rtm_type], rtm->rtm_pid, rtm->rtm_msglen, 950 rtm->rtm_seq, rtm->rtm_errno); 951 bprintf(stdout, rtm->rtm_flags, routeflags); 952 pmsg_common(rtm); 953 } 954 955 void 956 print_getmsg(rtm, msglen) 957 register struct rt_msghdr *rtm; 958 int msglen; 959 { 960 if (rtm->rtm_version != RTM_VERSION) { 961 (void)printf("routing message version %d not understood\n", 962 rtm->rtm_version); 963 return; 964 } 965 if (rtm->rtm_msglen > msglen) { 966 (void)printf("get length mismatch, in packet %d, returned %d\n", 967 rtm->rtm_msglen, msglen); 968 } 969 (void) printf("RTM_GET: errno %d, flags:", rtm->rtm_errno); 970 bprintf(stdout, rtm->rtm_flags, routeflags); 971 (void) printf("\nmetric values:\n "); 972 #define metric(f, e)\ 973 printf("%s: %d%s", __STRING(f), rtm->rtm_rmx.__CONCAT(rmx_,f), e) 974 metric(recvpipe, ", "); 975 metric(sendpipe, ", "); 976 metric(ssthresh, ", "); 977 metric(rtt, "\n "); 978 metric(rttvar, ", "); 979 metric(hopcount, ", "); 980 metric(mtu, ", "); 981 metric(expire, "\n"); 982 #undef metric 983 pmsg_common(rtm); 984 } 985 986 void 987 pmsg_common(rtm) 988 register struct rt_msghdr *rtm; 989 { 990 char *cp; 991 register struct sockaddr *sa; 992 int i; 993 994 (void) printf("\nlocks: "); 995 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 996 (void) printf(" inits: "); 997 bprintf(stdout, rtm->rtm_inits, metricnames); 998 (void) printf("\nsockaddrs: "); 999 bprintf(stdout, rtm->rtm_addrs, 1000 "\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR"); 1001 (void) putchar('\n'); 1002 cp = ((char *)(rtm + 1)); 1003 if (rtm->rtm_addrs) 1004 for (i = 1; i; i <<= 1) 1005 if (i & rtm->rtm_addrs) { 1006 sa = (struct sockaddr *)cp; 1007 (void) printf(" %s", routename(sa)); 1008 ADVANCE(cp, sa); 1009 } 1010 (void) putchar('\n'); 1011 (void) fflush(stdout); 1012 } 1013 1014 void 1015 bprintf(fp, b, s) 1016 register FILE *fp; 1017 register int b; 1018 register u_char *s; 1019 { 1020 register int i; 1021 int gotsome = 0; 1022 1023 if (b == 0) 1024 return; 1025 while (i = *s++) { 1026 if (b & (1 << (i-1))) { 1027 if (gotsome == 0) 1028 i = '<'; 1029 else 1030 i = ','; 1031 (void) putc(i, fp); 1032 gotsome = 1; 1033 for (; (i = *s) > 32; s++) 1034 (void) putc(i, fp); 1035 } else 1036 while (*s > 32) 1037 s++; 1038 } 1039 if (gotsome) 1040 (void) putc('>', fp); 1041 } 1042 1043 int 1044 keyword(cp) 1045 char *cp; 1046 { 1047 register struct keytab *kt = keywords; 1048 1049 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1050 kt++; 1051 return kt->kt_i; 1052 } 1053 1054 void 1055 sodump(su, which) 1056 register sup su; 1057 char *which; 1058 { 1059 switch (su->sa.sa_family) { 1060 case AF_LINK: 1061 (void) printf("%s: link %s; ", 1062 which, link_ntoa(&su->sdl)); 1063 break; 1064 case AF_ISO: 1065 (void) printf("%s: iso %s; ", 1066 which, iso_ntoa(&su->siso.siso_addr)); 1067 break; 1068 case AF_INET: 1069 (void) printf("%s: inet %s; ", 1070 which, inet_ntoa(su->sin.sin_addr)); 1071 break; 1072 case AF_NS: 1073 (void) printf("%s: xns %s; ", 1074 which, ns_ntoa(su->sns.sns_addr)); 1075 break; 1076 } 1077 (void) fflush(stdout); 1078 } 1079