| 16 | | private static const WILL:int = 0xFB; // 251 - WILL (option code) |
| 17 | | private static const WONT:int = 0xFC; // 252 - WON'T (option code) |
| 18 | | private static const DO:int = 0xFD; // 253 - DO (option code) |
| 19 | | private static const DONT:int = 0xFE; // 254 - DON'T (option code) |
| 20 | | private static const IAC:int = 0xFF; // 255 - Interpret as Command (IAC) |
| | 15 | private static const IAC:uint = 255; // interrupt as command |
| | 16 | private static const WILL:uint = 251; // I will use option |
| | 17 | private static const WONT:uint = 252; // I won't use option |
| | 18 | private static const DO:uint = 253; // please, you use option |
| | 19 | private static const DONT:uint = 254; // you are not to use option |
| | 20 | private static const SB:uint = 250; // interrupt as subnegotiation |
| | 21 | private static const SE:uint = 240; // end subnegotiation |
| | 22 | |
| | 23 | private static const SB_MAX_LENGTH:uint = 1024; // FIXME |
| | 24 | |
| | 25 | private var _istate:Function; |
| | 26 | |
| | 27 | private var _partnerOptionHandler:Array; |
| | 28 | private var _myOptionHandler:Array; |
| | 29 | private var _sbHandler:Array; |
| | 30 | private var _waitingWill:WaitingFlags; |
| | 31 | private var _waitingDo:WaitingFlags; |
| | 32 | private var _sbCommand:uint; |
| | 33 | private var _sbBuffer:ByteArray; |
| 29 | | var socket:Socket = _socket = new Socket(); |
| 30 | | socket.addEventListener(Event.CONNECT, connectHandler); |
| 31 | | socket.addEventListener(Event.CLOSE, closeHandler); |
| 32 | | socket.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler); |
| 33 | | socket.addEventListener(ProgressEvent.SOCKET_DATA, socketDataHandler); |
| 34 | | socket.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler); |
| | 42 | |
| | 43 | _partnerOptionHandler = new Array(); |
| | 44 | _partnerOptionHandler.length = 256; |
| | 45 | _myOptionHandler = new Array(); |
| | 46 | _myOptionHandler.length = 256; |
| | 47 | _sbHandler = new Array(); |
| | 48 | _sbHandler.length = 256; |
| | 49 | _waitingWill = new WaitingFlags(); |
| | 50 | _waitingDo = new WaitingFlags(); |
| | 51 | _sbBuffer = new ByteArray(); |
| | 52 | _sbBuffer.endian = "bigEndian"; |
| | 53 | |
| | 54 | _istate = istateNormal; |
| | 55 | |
| | 56 | _socket = new Socket(); |
| | 57 | _socket.addEventListener(Event.CONNECT, connectHandler); |
| | 58 | _socket.addEventListener(Event.CLOSE, closeHandler); |
| | 59 | _socket.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler); |
| | 60 | _socket.addEventListener(ProgressEvent.SOCKET_DATA, socketDataHandler); |
| | 61 | _socket.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler); |
| 157 | | dispatchEvent(event); |
| 158 | | } |
| 159 | | |
| | 186 | dispatchEvent(ev); |
| | 187 | } |
| | 188 | |
| | 189 | private function istateNormal(c:uint):void |
| | 190 | { |
| | 191 | switch(c) { |
| | 192 | case IAC: |
| | 193 | _istate = istateIAC; |
| | 194 | break; |
| | 195 | default: |
| | 196 | _buffer.writeByte(c); |
| | 197 | break; |
| | 198 | } |
| | 199 | } |
| | 200 | |
| | 201 | private function istateIAC(c:uint):void |
| | 202 | { |
| | 203 | switch(c) { |
| | 204 | case IAC: |
| | 205 | // IAC-escaped IAC. write one IAC |
| | 206 | _buffer.writeByte(IAC); |
| | 207 | _istate = istateNormal; |
| | 208 | break; |
| | 209 | case WILL: |
| | 210 | _istate = istateWill; |
| | 211 | break; |
| | 212 | case WONT: |
| | 213 | _istate = istateWont; |
| | 214 | break; |
| | 215 | case DO: |
| | 216 | _istate = istateDo; |
| | 217 | break; |
| | 218 | case DONT: |
| | 219 | _istate = istateDont; |
| | 220 | break; |
| | 221 | case SB: |
| | 222 | // subnegotiation |
| | 223 | _istate = istateSb; |
| | 224 | break; |
| | 225 | // FIXME there are many other telnet commands ... |
| | 226 | // NO, DM, AYT, ... |
| | 227 | default: |
| | 228 | // broken or non-supported protocol |
| | 229 | _buffer.writeByte(IAC); |
| | 230 | _buffer.writeByte(c); |
| | 231 | _istate = istateNormal; |
| | 232 | break; |
| | 233 | } |
| | 234 | } |
| | 235 | |
| | 236 | |
| | 237 | private function istateWill(c:uint):void |
| | 238 | { |
| | 239 | trace("will " + c); |
| | 240 | if( _waitingWill.test(c) ) { |
| | 241 | // do (or maybe dont) is sent and receive will |
| | 242 | // the partner can use the option |
| | 243 | _waitingWill.reset(c); |
| | 244 | if( _partnerOptionHandler[c] ) { |
| | 245 | _partnerOptionHandler[c](c, true, this); |
| | 246 | } |
| | 247 | } else { |
| | 248 | // the partner wants to use the option |
| | 249 | if( _partnerOptionHandler[c] ) { |
| | 250 | // the option is acceptable |
| | 251 | // the partner can use the option |
| | 252 | // reply DO |
| | 253 | _partnerOptionHandler[c](c, true, this); |
| | 254 | owrite3(IAC, DO, c); |
| | 255 | } else { |
| | 256 | // the option is not acceptable |
| | 257 | // reply DONT |
| | 258 | owrite3(IAC, DONT, c); |
| | 259 | } |
| | 260 | } |
| | 261 | _istate = istateNormal; |
| | 262 | } |
| | 263 | |
| | 264 | private function istateWont(c:uint):void |
| | 265 | { |
| | 266 | trace("wont " + c); |
| | 267 | if( _waitingWill.test(c) ) { |
| | 268 | // do or dont is sent and receive wont |
| | 269 | // the partner can't use the option |
| | 270 | _waitingWill.reset(c); |
| | 271 | } else { |
| | 272 | // I am required not to use the option |
| | 273 | // I can't use the option |
| | 274 | // reply wont |
| | 275 | if( _partnerOptionHandler[c] ) { |
| | 276 | _partnerOptionHandler[c](c, false, this); |
| | 277 | } |
| | 278 | owrite3(IAC, WONT, c); |
| | 279 | } |
| | 280 | _istate = istateNormal; |
| | 281 | } |
| | 282 | |
| | 283 | private function istateDo(c:uint):void |
| | 284 | { |
| | 285 | trace("do " + c); |
| | 286 | if( _waitingDo.test(c) ) { |
| | 287 | // will (or maybe wont) is sent and receive do |
| | 288 | // I can use the option |
| | 289 | _waitingDo.reset(c); |
| | 290 | if( _myOptionHandler[c] ) { |
| | 291 | _myOptionHandler[c](c, true, this); |
| | 292 | } |
| | 293 | } else { |
| | 294 | // I am required to use use the option |
| | 295 | if( _myOptionHandler[c] ) { |
| | 296 | // I support the option |
| | 297 | // I can use the option |
| | 298 | // reply will |
| | 299 | _myOptionHandler[c](c, true, this); |
| | 300 | owrite3(IAC, WILL, c); |
| | 301 | } else { |
| | 302 | // I don't support the option |
| | 303 | // reply wont |
| | 304 | owrite3(IAC, WONT, c); |
| | 305 | } |
| | 306 | } |
| | 307 | _istate = istateNormal; |
| | 308 | } |
| | 309 | |
| | 310 | private function istateDont(c:uint):void |
| | 311 | { |
| | 312 | trace("dont " + c); |
| | 313 | if( _waitingDo.test(c) ) { |
| | 314 | // will is sent and receive dont |
| | 315 | // I can't use the option |
| | 316 | _waitingDo.reset(c); |
| | 317 | if( _myOptionHandler[c] ) { |
| | 318 | _myOptionHandler[c](c, false, this); |
| | 319 | } |
| | 320 | } else { |
| | 321 | // the partner wants not to use the option |
| | 322 | // the partner can't use the option |
| | 323 | // reply dont |
| | 324 | if( _myOptionHandler[c] ) { |
| | 325 | _myOptionHandler[c](c, false, this); |
| | 326 | } |
| | 327 | owrite3(IAC, WONT, c); |
| | 328 | } |
| | 329 | _istate = istateNormal; |
| | 330 | } |
| | 331 | |
| | 332 | public function istateSb(c:uint):void |
| | 333 | { |
| | 334 | _sbCommand = c; |
| | 335 | _sbBuffer.length = 0; |
| | 336 | _istate = istateSbMessage; |
| | 337 | } |
| | 338 | |
| | 339 | public function istateSbMessage(c:uint):void |
| | 340 | { |
| | 341 | if( c == IAC ) { |
| | 342 | _istate = istateSbMeessageIAC; |
| | 343 | } else { |
| | 344 | if( _sbBuffer.length > SB_MAX_LENGTH ) { |
| | 345 | // subnegotiation is too long |
| | 346 | _istate = istateNormal; |
| | 347 | } else { |
| | 348 | _sbBuffer.writeByte(c); |
| | 349 | } |
| | 350 | } |
| | 351 | } |
| | 352 | |
| | 353 | public function istateSbMeessageIAC(c:uint):void |
| | 354 | { |
| | 355 | if( c == IAC ) { |
| | 356 | // IAC-escaped IAC. write one IAC |
| | 357 | if( _sbBuffer.length > SB_MAX_LENGTH ) { |
| | 358 | // subnegotiation is too long |
| | 359 | _istate = istateNormal; |
| | 360 | } else { |
| | 361 | _buffer.writeByte(c); |
| | 362 | _istate = istateSbMessage; |
| | 363 | } |
| | 364 | } else if( c == SE ) { |
| | 365 | // end of subnegotiation |
| | 366 | if( _sbHandler[_sbCommand] ) { |
| | 367 | _sbBuffer.position = 0; |
| | 368 | _sbHandler[_sbCommand]( |
| | 369 | _sbCommand, |
| | 370 | _sbBuffer, |
| | 371 | this ); |
| | 372 | } |
| | 373 | _istate = istateNormal; |
| | 374 | } |
| | 375 | } |
| | 376 | |
| | 377 | private function owrite1(c1:uint):void |
| | 378 | { |
| | 379 | _socket.writeByte(c1); |
| | 380 | } |
| | 381 | private function owrite2(c1:uint, c2:uint):void |
| | 382 | { |
| | 383 | _socket.writeByte(c1); |
| | 384 | _socket.writeByte(c2); |
| | 385 | } |
| | 386 | private function owrite3(c1:uint, c2:uint, c3:uint):void |
| | 387 | { |
| | 388 | _socket.writeByte(c1); |
| | 389 | _socket.writeByte(c2); |
| | 390 | _socket.writeByte(c3); |
| | 391 | } |
| | 493 | |
| | 494 | |
| | 495 | public static const GA:uint = 249; // you may reverse the line |
| | 496 | public static const EL:uint = 248; // erase the current line |
| | 497 | public static const EC:uint = 247; // erase the current byteacter |
| | 498 | public static const AYT:uint = 246; // are you there |
| | 499 | public static const AO:uint = 245; // abort output--but let prog finish |
| | 500 | public static const IP:uint = 244; // interrupt process--permanently |
| | 501 | public static const BREAK:uint = 243; // break |
| | 502 | public static const DM:uint = 242; // data mark--for connect. cleaning |
| | 503 | public static const NOP:uint = 241; // nop |
| | 504 | public static const EOR:uint = 239; // end of record (transparent mode) |
| | 505 | public static const ABORT:uint = 238; // Abort process |
| | 506 | public static const SUSP:uint = 237; // Suspend process |
| | 507 | public static const xEOF:uint = 236; // End of file: EOF is already used... |
| | 508 | |
| | 509 | public static const OPT_BINARY:uint = 0; // 8-bit data path |
| | 510 | public static const OPT_ECHO:uint = 1; // echo |
| | 511 | public static const OPT_RCP:uint = 2; // prepare to reconnect |
| | 512 | public static const OPT_SGA:uint = 3; // suppress go ahead |
| | 513 | public static const OPT_NAMS:uint = 4; // approximate message size |
| | 514 | public static const OPT_STATUS:uint = 5; // give status |
| | 515 | public static const OPT_TM:uint = 6; // timing mark |
| | 516 | public static const OPT_RCTE:uint = 7; // remote controlled transmission and echo |
| | 517 | public static const OPT_NAOL:uint = 8; // negotiate about output line width |
| | 518 | public static const OPT_NAOP:uint = 9; // negotiate about output page size |
| | 519 | public static const OPT_NAOCRD:uint = 10; // negotiate about CR disposition |
| | 520 | public static const OPT_NAOHTS:uint = 11; // negotiate about horizontal tabstops |
| | 521 | public static const OPT_NAOHTD:uint = 12; // negotiate about horizontal tab disposition |
| | 522 | public static const OPT_NAOFFD:uint = 13; // negotiate about formfeed disposition |
| | 523 | public static const OPT_NAOVTS:uint = 14; // negotiate about vertical tab stops |
| | 524 | public static const OPT_NAOVTD:uint = 15; // negotiate about vertical tab disposition |
| | 525 | public static const OPT_NAOLFD:uint = 16; // negotiate about output LF disposition |
| | 526 | public static const OPT_XASCII:uint = 17; // extended ascic byteacter set |
| | 527 | public static const OPT_LOGOUT:uint = 18; // force logout |
| | 528 | public static const OPT_BM:uint = 19; // byte macro |
| | 529 | public static const OPT_DET:uint = 20; // data entry terminal |
| | 530 | public static const OPT_SUPDUP:uint = 21; // supdup protocol |
| | 531 | public static const OPT_SUPDUPOUTPUT:uint = 22; // supdup output |
| | 532 | public static const OPT_SNDLOC:uint = 23; // send location |
| | 533 | public static const OPT_TTYPE:uint = 24; // terminal type |
| | 534 | public static const OPT_EOR:uint = 25; // end or record |
| | 535 | public static const OPT_TUID:uint = 26; // TACACS user identification |
| | 536 | public static const OPT_OUTMRK:uint = 27; // output marking |
| | 537 | public static const OPT_TTYLOC:uint = 28; // terminal location number |
| | 538 | public static const OPT_3270REGIME:uint = 29; // 3270 regime |
| | 539 | public static const OPT_X3PAD:uint = 30; // X.3 PAD |
| | 540 | public static const OPT_NAWS:uint = 31; // window size |
| | 541 | public static const OPT_TSPEED:uint = 32; // terminal speed |
| | 542 | public static const OPT_LFLOW:uint = 33; // remote flow control |
| | 543 | public static const OPT_LINEMODE:uint = 34; // Linemode option |
| | 544 | public static const OPT_XDISPLOC:uint = 35; // X Display Location |
| | 545 | public static const OPT_OLD_ENVIRON:uint= 36; // Old - Environment variables |
| | 546 | public static const OPT_AUTHENTICATION:uint = 37; // Authenticate |
| | 547 | public static const OPT_ENCRYPT:uint = 38; // Encryption option |
| | 548 | public static const OPT_NEW_ENVIRON:uint= 39; // New - Environment variables |
| | 549 | public static const OPT_TN3270E:uint = 40; // TN3270 enhancements |
| | 550 | public static const OPT_XAUTH:uint = 41; // |
| | 551 | public static const OPT_byteSET:uint = 42; // byteacter set |
| | 552 | public static const OPT_RSP:uint = 43; // Remote serial port |
| | 553 | public static const OPT_COM_PORT_OPTION:uint = 44; // Com port control |
| | 554 | public static const OPT_SLE:uint = 45; // Suppress local echo |
| | 555 | public static const OPT_STARTTLS:uint = 46; // Start TLS |
| | 556 | public static const OPT_KERMIT:uint = 47; // Automatic Kermit file transfer |
| | 557 | public static const OPT_SEND_URL:uint = 48; |
| | 558 | public static const OPT_FORWARD_X:uint = 49; |
| | 559 | public static const OPT_PRAGMA_LOGON:uint = 138; |
| | 560 | public static const OPT_SSPI_LOGON:uint = 139; |
| | 561 | public static const OPT_EXOPL:uint = 255; // extended-options-list |
| | 562 | public static const OPT_PRAGMA_HEARTBEAT:uint = 140; |
| | 563 | |