1// Copyright (c) 1999-2004 Brian Wellington (bwelling@xbill.org) 2 3package org.xbill.DNS; 4 5import java.net.*; 6import java.io.*; 7import java.util.*; 8 9/** 10 * Well Known Services - Lists services offered by this host. 11 * 12 * @author Brian Wellington 13 */ 14 15public class WKSRecord extends Record { 16 17private static final long serialVersionUID = -9104259763909119805L; 18 19public static class Protocol { 20 /** 21 * IP protocol identifiers. This is basically copied out of RFC 1010. 22 */ 23 24 private Protocol() {} 25 26 /** Internet Control Message */ 27 public static final int ICMP = 1; 28 29 /** Internet Group Management */ 30 public static final int IGMP = 2; 31 32 /** Gateway-to-Gateway */ 33 public static final int GGP = 3; 34 35 /** Stream */ 36 public static final int ST = 5; 37 38 /** Transmission Control */ 39 public static final int TCP = 6; 40 41 /** UCL */ 42 public static final int UCL = 7; 43 44 /** Exterior Gateway Protocol */ 45 public static final int EGP = 8; 46 47 /** any private interior gateway */ 48 public static final int IGP = 9; 49 50 /** BBN RCC Monitoring */ 51 public static final int BBN_RCC_MON = 10; 52 53 /** Network Voice Protocol */ 54 public static final int NVP_II = 11; 55 56 /** PUP */ 57 public static final int PUP = 12; 58 59 /** ARGUS */ 60 public static final int ARGUS = 13; 61 62 /** EMCON */ 63 public static final int EMCON = 14; 64 65 /** Cross Net Debugger */ 66 public static final int XNET = 15; 67 68 /** Chaos */ 69 public static final int CHAOS = 16; 70 71 /** User Datagram */ 72 public static final int UDP = 17; 73 74 /** Multiplexing */ 75 public static final int MUX = 18; 76 77 /** DCN Measurement Subsystems */ 78 public static final int DCN_MEAS = 19; 79 80 /** Host Monitoring */ 81 public static final int HMP = 20; 82 83 /** Packet Radio Measurement */ 84 public static final int PRM = 21; 85 86 /** XEROX NS IDP */ 87 public static final int XNS_IDP = 22; 88 89 /** Trunk-1 */ 90 public static final int TRUNK_1 = 23; 91 92 /** Trunk-2 */ 93 public static final int TRUNK_2 = 24; 94 95 /** Leaf-1 */ 96 public static final int LEAF_1 = 25; 97 98 /** Leaf-2 */ 99 public static final int LEAF_2 = 26; 100 101 /** Reliable Data Protocol */ 102 public static final int RDP = 27; 103 104 /** Internet Reliable Transaction */ 105 public static final int IRTP = 28; 106 107 /** ISO Transport Protocol Class 4 */ 108 public static final int ISO_TP4 = 29; 109 110 /** Bulk Data Transfer Protocol */ 111 public static final int NETBLT = 30; 112 113 /** MFE Network Services Protocol */ 114 public static final int MFE_NSP = 31; 115 116 /** MERIT Internodal Protocol */ 117 public static final int MERIT_INP = 32; 118 119 /** Sequential Exchange Protocol */ 120 public static final int SEP = 33; 121 122 /** CFTP */ 123 public static final int CFTP = 62; 124 125 /** SATNET and Backroom EXPAK */ 126 public static final int SAT_EXPAK = 64; 127 128 /** MIT Subnet Support */ 129 public static final int MIT_SUBNET = 65; 130 131 /** MIT Remote Virtual Disk Protocol */ 132 public static final int RVD = 66; 133 134 /** Internet Pluribus Packet Core */ 135 public static final int IPPC = 67; 136 137 /** SATNET Monitoring */ 138 public static final int SAT_MON = 69; 139 140 /** Internet Packet Core Utility */ 141 public static final int IPCV = 71; 142 143 /** Backroom SATNET Monitoring */ 144 public static final int BR_SAT_MON = 76; 145 146 /** WIDEBAND Monitoring */ 147 public static final int WB_MON = 78; 148 149 /** WIDEBAND EXPAK */ 150 public static final int WB_EXPAK = 79; 151 152 private static Mnemonic protocols = new Mnemonic("IP protocol", 153 Mnemonic.CASE_LOWER); 154 155 static { 156 protocols.setMaximum(0xFF); 157 protocols.setNumericAllowed(true); 158 159 protocols.add(ICMP, "icmp"); 160 protocols.add(IGMP, "igmp"); 161 protocols.add(GGP, "ggp"); 162 protocols.add(ST, "st"); 163 protocols.add(TCP, "tcp"); 164 protocols.add(UCL, "ucl"); 165 protocols.add(EGP, "egp"); 166 protocols.add(IGP, "igp"); 167 protocols.add(BBN_RCC_MON, "bbn-rcc-mon"); 168 protocols.add(NVP_II, "nvp-ii"); 169 protocols.add(PUP, "pup"); 170 protocols.add(ARGUS, "argus"); 171 protocols.add(EMCON, "emcon"); 172 protocols.add(XNET, "xnet"); 173 protocols.add(CHAOS, "chaos"); 174 protocols.add(UDP, "udp"); 175 protocols.add(MUX, "mux"); 176 protocols.add(DCN_MEAS, "dcn-meas"); 177 protocols.add(HMP, "hmp"); 178 protocols.add(PRM, "prm"); 179 protocols.add(XNS_IDP, "xns-idp"); 180 protocols.add(TRUNK_1, "trunk-1"); 181 protocols.add(TRUNK_2, "trunk-2"); 182 protocols.add(LEAF_1, "leaf-1"); 183 protocols.add(LEAF_2, "leaf-2"); 184 protocols.add(RDP, "rdp"); 185 protocols.add(IRTP, "irtp"); 186 protocols.add(ISO_TP4, "iso-tp4"); 187 protocols.add(NETBLT, "netblt"); 188 protocols.add(MFE_NSP, "mfe-nsp"); 189 protocols.add(MERIT_INP, "merit-inp"); 190 protocols.add(SEP, "sep"); 191 protocols.add(CFTP, "cftp"); 192 protocols.add(SAT_EXPAK, "sat-expak"); 193 protocols.add(MIT_SUBNET, "mit-subnet"); 194 protocols.add(RVD, "rvd"); 195 protocols.add(IPPC, "ippc"); 196 protocols.add(SAT_MON, "sat-mon"); 197 protocols.add(IPCV, "ipcv"); 198 protocols.add(BR_SAT_MON, "br-sat-mon"); 199 protocols.add(WB_MON, "wb-mon"); 200 protocols.add(WB_EXPAK, "wb-expak"); 201 } 202 203 /** 204 * Converts an IP protocol value into its textual representation 205 */ 206 public static String 207 string(int type) { 208 return protocols.getText(type); 209 } 210 211 /** 212 * Converts a textual representation of an IP protocol into its 213 * numeric code. Integers in the range 0..255 are also accepted. 214 * @param s The textual representation of the protocol 215 * @return The protocol code, or -1 on error. 216 */ 217 public static int 218 value(String s) { 219 return protocols.getValue(s); 220 } 221} 222 223public static class Service { 224 /** 225 * TCP/UDP services. This is basically copied out of RFC 1010, 226 * with MIT-ML-DEV removed, as it is not unique, and the description 227 * of SWIFT-RVF fixed. 228 */ 229 230 private Service() {} 231 232 /** Remote Job Entry */ 233 public static final int RJE = 5; 234 235 /** Echo */ 236 public static final int ECHO = 7; 237 238 /** Discard */ 239 public static final int DISCARD = 9; 240 241 /** Active Users */ 242 public static final int USERS = 11; 243 244 /** Daytime */ 245 public static final int DAYTIME = 13; 246 247 /** Quote of the Day */ 248 public static final int QUOTE = 17; 249 250 /** Character Generator */ 251 public static final int CHARGEN = 19; 252 253 /** File Transfer [Default Data] */ 254 public static final int FTP_DATA = 20; 255 256 /** File Transfer [Control] */ 257 public static final int FTP = 21; 258 259 /** Telnet */ 260 public static final int TELNET = 23; 261 262 /** Simple Mail Transfer */ 263 public static final int SMTP = 25; 264 265 /** NSW User System FE */ 266 public static final int NSW_FE = 27; 267 268 /** MSG ICP */ 269 public static final int MSG_ICP = 29; 270 271 /** MSG Authentication */ 272 public static final int MSG_AUTH = 31; 273 274 /** Display Support Protocol */ 275 public static final int DSP = 33; 276 277 /** Time */ 278 public static final int TIME = 37; 279 280 /** Resource Location Protocol */ 281 public static final int RLP = 39; 282 283 /** Graphics */ 284 public static final int GRAPHICS = 41; 285 286 /** Host Name Server */ 287 public static final int NAMESERVER = 42; 288 289 /** Who Is */ 290 public static final int NICNAME = 43; 291 292 /** MPM FLAGS Protocol */ 293 public static final int MPM_FLAGS = 44; 294 295 /** Message Processing Module [recv] */ 296 public static final int MPM = 45; 297 298 /** MPM [default send] */ 299 public static final int MPM_SND = 46; 300 301 /** NI FTP */ 302 public static final int NI_FTP = 47; 303 304 /** Login Host Protocol */ 305 public static final int LOGIN = 49; 306 307 /** IMP Logical Address Maintenance */ 308 public static final int LA_MAINT = 51; 309 310 /** Domain Name Server */ 311 public static final int DOMAIN = 53; 312 313 /** ISI Graphics Language */ 314 public static final int ISI_GL = 55; 315 316 /** NI MAIL */ 317 public static final int NI_MAIL = 61; 318 319 /** VIA Systems - FTP */ 320 public static final int VIA_FTP = 63; 321 322 /** TACACS-Database Service */ 323 public static final int TACACS_DS = 65; 324 325 /** Bootstrap Protocol Server */ 326 public static final int BOOTPS = 67; 327 328 /** Bootstrap Protocol Client */ 329 public static final int BOOTPC = 68; 330 331 /** Trivial File Transfer */ 332 public static final int TFTP = 69; 333 334 /** Remote Job Service */ 335 public static final int NETRJS_1 = 71; 336 337 /** Remote Job Service */ 338 public static final int NETRJS_2 = 72; 339 340 /** Remote Job Service */ 341 public static final int NETRJS_3 = 73; 342 343 /** Remote Job Service */ 344 public static final int NETRJS_4 = 74; 345 346 /** Finger */ 347 public static final int FINGER = 79; 348 349 /** HOSTS2 Name Server */ 350 public static final int HOSTS2_NS = 81; 351 352 /** SU/MIT Telnet Gateway */ 353 public static final int SU_MIT_TG = 89; 354 355 /** MIT Dover Spooler */ 356 public static final int MIT_DOV = 91; 357 358 /** Device Control Protocol */ 359 public static final int DCP = 93; 360 361 /** SUPDUP */ 362 public static final int SUPDUP = 95; 363 364 /** Swift Remote Virtual File Protocol */ 365 public static final int SWIFT_RVF = 97; 366 367 /** TAC News */ 368 public static final int TACNEWS = 98; 369 370 /** Metagram Relay */ 371 public static final int METAGRAM = 99; 372 373 /** NIC Host Name Server */ 374 public static final int HOSTNAME = 101; 375 376 /** ISO-TSAP */ 377 public static final int ISO_TSAP = 102; 378 379 /** X400 */ 380 public static final int X400 = 103; 381 382 /** X400-SND */ 383 public static final int X400_SND = 104; 384 385 /** Mailbox Name Nameserver */ 386 public static final int CSNET_NS = 105; 387 388 /** Remote Telnet Service */ 389 public static final int RTELNET = 107; 390 391 /** Post Office Protocol - Version 2 */ 392 public static final int POP_2 = 109; 393 394 /** SUN Remote Procedure Call */ 395 public static final int SUNRPC = 111; 396 397 /** Authentication Service */ 398 public static final int AUTH = 113; 399 400 /** Simple File Transfer Protocol */ 401 public static final int SFTP = 115; 402 403 /** UUCP Path Service */ 404 public static final int UUCP_PATH = 117; 405 406 /** Network News Transfer Protocol */ 407 public static final int NNTP = 119; 408 409 /** HYDRA Expedited Remote Procedure */ 410 public static final int ERPC = 121; 411 412 /** Network Time Protocol */ 413 public static final int NTP = 123; 414 415 /** Locus PC-Interface Net Map Server */ 416 public static final int LOCUS_MAP = 125; 417 418 /** Locus PC-Interface Conn Server */ 419 public static final int LOCUS_CON = 127; 420 421 /** Password Generator Protocol */ 422 public static final int PWDGEN = 129; 423 424 /** CISCO FNATIVE */ 425 public static final int CISCO_FNA = 130; 426 427 /** CISCO TNATIVE */ 428 public static final int CISCO_TNA = 131; 429 430 /** CISCO SYSMAINT */ 431 public static final int CISCO_SYS = 132; 432 433 /** Statistics Service */ 434 public static final int STATSRV = 133; 435 436 /** INGRES-NET Service */ 437 public static final int INGRES_NET = 134; 438 439 /** Location Service */ 440 public static final int LOC_SRV = 135; 441 442 /** PROFILE Naming System */ 443 public static final int PROFILE = 136; 444 445 /** NETBIOS Name Service */ 446 public static final int NETBIOS_NS = 137; 447 448 /** NETBIOS Datagram Service */ 449 public static final int NETBIOS_DGM = 138; 450 451 /** NETBIOS Session Service */ 452 public static final int NETBIOS_SSN = 139; 453 454 /** EMFIS Data Service */ 455 public static final int EMFIS_DATA = 140; 456 457 /** EMFIS Control Service */ 458 public static final int EMFIS_CNTL = 141; 459 460 /** Britton-Lee IDM */ 461 public static final int BL_IDM = 142; 462 463 /** Survey Measurement */ 464 public static final int SUR_MEAS = 243; 465 466 /** LINK */ 467 public static final int LINK = 245; 468 469 private static Mnemonic services = new Mnemonic("TCP/UDP service", 470 Mnemonic.CASE_LOWER); 471 472 static { 473 services.setMaximum(0xFFFF); 474 services.setNumericAllowed(true); 475 476 services.add(RJE, "rje"); 477 services.add(ECHO, "echo"); 478 services.add(DISCARD, "discard"); 479 services.add(USERS, "users"); 480 services.add(DAYTIME, "daytime"); 481 services.add(QUOTE, "quote"); 482 services.add(CHARGEN, "chargen"); 483 services.add(FTP_DATA, "ftp-data"); 484 services.add(FTP, "ftp"); 485 services.add(TELNET, "telnet"); 486 services.add(SMTP, "smtp"); 487 services.add(NSW_FE, "nsw-fe"); 488 services.add(MSG_ICP, "msg-icp"); 489 services.add(MSG_AUTH, "msg-auth"); 490 services.add(DSP, "dsp"); 491 services.add(TIME, "time"); 492 services.add(RLP, "rlp"); 493 services.add(GRAPHICS, "graphics"); 494 services.add(NAMESERVER, "nameserver"); 495 services.add(NICNAME, "nicname"); 496 services.add(MPM_FLAGS, "mpm-flags"); 497 services.add(MPM, "mpm"); 498 services.add(MPM_SND, "mpm-snd"); 499 services.add(NI_FTP, "ni-ftp"); 500 services.add(LOGIN, "login"); 501 services.add(LA_MAINT, "la-maint"); 502 services.add(DOMAIN, "domain"); 503 services.add(ISI_GL, "isi-gl"); 504 services.add(NI_MAIL, "ni-mail"); 505 services.add(VIA_FTP, "via-ftp"); 506 services.add(TACACS_DS, "tacacs-ds"); 507 services.add(BOOTPS, "bootps"); 508 services.add(BOOTPC, "bootpc"); 509 services.add(TFTP, "tftp"); 510 services.add(NETRJS_1, "netrjs-1"); 511 services.add(NETRJS_2, "netrjs-2"); 512 services.add(NETRJS_3, "netrjs-3"); 513 services.add(NETRJS_4, "netrjs-4"); 514 services.add(FINGER, "finger"); 515 services.add(HOSTS2_NS, "hosts2-ns"); 516 services.add(SU_MIT_TG, "su-mit-tg"); 517 services.add(MIT_DOV, "mit-dov"); 518 services.add(DCP, "dcp"); 519 services.add(SUPDUP, "supdup"); 520 services.add(SWIFT_RVF, "swift-rvf"); 521 services.add(TACNEWS, "tacnews"); 522 services.add(METAGRAM, "metagram"); 523 services.add(HOSTNAME, "hostname"); 524 services.add(ISO_TSAP, "iso-tsap"); 525 services.add(X400, "x400"); 526 services.add(X400_SND, "x400-snd"); 527 services.add(CSNET_NS, "csnet-ns"); 528 services.add(RTELNET, "rtelnet"); 529 services.add(POP_2, "pop-2"); 530 services.add(SUNRPC, "sunrpc"); 531 services.add(AUTH, "auth"); 532 services.add(SFTP, "sftp"); 533 services.add(UUCP_PATH, "uucp-path"); 534 services.add(NNTP, "nntp"); 535 services.add(ERPC, "erpc"); 536 services.add(NTP, "ntp"); 537 services.add(LOCUS_MAP, "locus-map"); 538 services.add(LOCUS_CON, "locus-con"); 539 services.add(PWDGEN, "pwdgen"); 540 services.add(CISCO_FNA, "cisco-fna"); 541 services.add(CISCO_TNA, "cisco-tna"); 542 services.add(CISCO_SYS, "cisco-sys"); 543 services.add(STATSRV, "statsrv"); 544 services.add(INGRES_NET, "ingres-net"); 545 services.add(LOC_SRV, "loc-srv"); 546 services.add(PROFILE, "profile"); 547 services.add(NETBIOS_NS, "netbios-ns"); 548 services.add(NETBIOS_DGM, "netbios-dgm"); 549 services.add(NETBIOS_SSN, "netbios-ssn"); 550 services.add(EMFIS_DATA, "emfis-data"); 551 services.add(EMFIS_CNTL, "emfis-cntl"); 552 services.add(BL_IDM, "bl-idm"); 553 services.add(SUR_MEAS, "sur-meas"); 554 services.add(LINK, "link"); 555 } 556 557 /** 558 * Converts a TCP/UDP service port number into its textual 559 * representation. 560 */ 561 public static String 562 string(int type) { 563 return services.getText(type); 564 } 565 566 /** 567 * Converts a textual representation of a TCP/UDP service into its 568 * port number. Integers in the range 0..65535 are also accepted. 569 * @param s The textual representation of the service. 570 * @return The port number, or -1 on error. 571 */ 572 public static int 573 value(String s) { 574 return services.getValue(s); 575 } 576} 577private byte [] address; 578private int protocol; 579private int [] services; 580 581WKSRecord() {} 582 583Record 584getObject() { 585 return new WKSRecord(); 586} 587 588/** 589 * Creates a WKS Record from the given data 590 * @param address The IP address 591 * @param protocol The IP protocol number 592 * @param services An array of supported services, represented by port number. 593 */ 594public 595WKSRecord(Name name, int dclass, long ttl, InetAddress address, int protocol, 596 int [] services) 597{ 598 super(name, Type.WKS, dclass, ttl); 599 if (Address.familyOf(address) != Address.IPv4) 600 throw new IllegalArgumentException("invalid IPv4 address"); 601 this.address = address.getAddress(); 602 this.protocol = checkU8("protocol", protocol); 603 for (int i = 0; i < services.length; i++) { 604 checkU16("service", services[i]); 605 } 606 this.services = new int[services.length]; 607 System.arraycopy(services, 0, this.services, 0, services.length); 608 Arrays.sort(this.services); 609} 610 611void 612rrFromWire(DNSInput in) throws IOException { 613 address = in.readByteArray(4); 614 protocol = in.readU8(); 615 byte [] array = in.readByteArray(); 616 List list = new ArrayList(); 617 for (int i = 0; i < array.length; i++) { 618 for (int j = 0; j < 8; j++) { 619 int octet = array[i] & 0xFF; 620 if ((octet & (1 << (7 - j))) != 0) { 621 list.add(new Integer(i * 8 + j)); 622 } 623 } 624 } 625 services = new int[list.size()]; 626 for (int i = 0; i < list.size(); i++) { 627 services[i] = ((Integer) list.get(i)).intValue(); 628 } 629} 630 631void 632rdataFromString(Tokenizer st, Name origin) throws IOException { 633 String s = st.getString(); 634 address = Address.toByteArray(s, Address.IPv4); 635 if (address == null) 636 throw st.exception("invalid address"); 637 638 s = st.getString(); 639 protocol = Protocol.value(s); 640 if (protocol < 0) { 641 throw st.exception("Invalid IP protocol: " + s); 642 } 643 644 List list = new ArrayList(); 645 while (true) { 646 Tokenizer.Token t = st.get(); 647 if (!t.isString()) 648 break; 649 int service = Service.value(t.value); 650 if (service < 0) { 651 throw st.exception("Invalid TCP/UDP service: " + 652 t.value); 653 } 654 list.add(new Integer(service)); 655 } 656 st.unget(); 657 services = new int[list.size()]; 658 for (int i = 0; i < list.size(); i++) { 659 services[i] = ((Integer) list.get(i)).intValue(); 660 } 661} 662 663/** 664 * Converts rdata to a String 665 */ 666String 667rrToString() { 668 StringBuffer sb = new StringBuffer(); 669 sb.append(Address.toDottedQuad(address)); 670 sb.append(" "); 671 sb.append(protocol); 672 for (int i = 0; i < services.length; i++) { 673 sb.append(" " + services[i]); 674 } 675 return sb.toString(); 676} 677 678/** 679 * Returns the IP address. 680 */ 681public InetAddress 682getAddress() { 683 try { 684 return InetAddress.getByAddress(address); 685 } catch (UnknownHostException e) { 686 return null; 687 } 688} 689 690/** 691 * Returns the IP protocol. 692 */ 693public int 694getProtocol() { 695 return protocol; 696} 697 698/** 699 * Returns the services provided by the host on the specified address. 700 */ 701public int [] 702getServices() { 703 return services; 704} 705 706void 707rrToWire(DNSOutput out, Compression c, boolean canonical) { 708 out.writeByteArray(address); 709 out.writeU8(protocol); 710 int highestPort = services[services.length - 1]; 711 byte [] array = new byte[highestPort / 8 + 1]; 712 for (int i = 0; i < services.length; i++) { 713 int port = services[i]; 714 array[port / 8] |= (1 << (7 - port % 8)); 715 } 716 out.writeByteArray(array); 717} 718 719} 720