Jake Slack | 03928ae | 2014-05-13 18:41:56 -0700 | [diff] [blame^] | 1 | // |
| 2 | // ======================================================================== |
| 3 | // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| 4 | // ------------------------------------------------------------------------ |
| 5 | // All rights reserved. This program and the accompanying materials |
| 6 | // are made available under the terms of the Eclipse Public License v1.0 |
| 7 | // and Apache License v2.0 which accompanies this distribution. |
| 8 | // |
| 9 | // The Eclipse Public License is available at |
| 10 | // http://www.eclipse.org/legal/epl-v10.html |
| 11 | // |
| 12 | // The Apache License v2.0 is available at |
| 13 | // http://www.opensource.org/licenses/apache2.0.php |
| 14 | // |
| 15 | // You may elect to redistribute this code under either of these licenses. |
| 16 | // ======================================================================== |
| 17 | // |
| 18 | |
| 19 | package org.eclipse.jetty.websocket; |
| 20 | |
| 21 | import java.io.IOException; |
| 22 | import java.security.MessageDigest; |
| 23 | import java.security.NoSuchAlgorithmException; |
| 24 | import java.util.Collections; |
| 25 | import java.util.List; |
| 26 | |
| 27 | import org.eclipse.jetty.io.AbstractConnection; |
| 28 | import org.eclipse.jetty.io.AsyncEndPoint; |
| 29 | import org.eclipse.jetty.io.Buffer; |
| 30 | import org.eclipse.jetty.io.ByteArrayBuffer; |
| 31 | import org.eclipse.jetty.io.Connection; |
| 32 | import org.eclipse.jetty.io.EndPoint; |
| 33 | import org.eclipse.jetty.io.nio.IndirectNIOBuffer; |
| 34 | import org.eclipse.jetty.util.StringUtil; |
| 35 | import org.eclipse.jetty.util.log.Log; |
| 36 | import org.eclipse.jetty.util.log.Logger; |
| 37 | import org.eclipse.jetty.websocket.WebSocket.OnFrame; |
| 38 | |
| 39 | public class WebSocketConnectionD00 extends AbstractConnection implements WebSocketConnection, WebSocket.FrameConnection |
| 40 | { |
| 41 | private static final Logger LOG = Log.getLogger(WebSocketConnectionD00.class); |
| 42 | |
| 43 | public final static byte LENGTH_FRAME=(byte)0x80; |
| 44 | public final static byte SENTINEL_FRAME=(byte)0x00; |
| 45 | |
| 46 | private final WebSocketParser _parser; |
| 47 | private final WebSocketGenerator _generator; |
| 48 | private final WebSocket _websocket; |
| 49 | private final String _protocol; |
| 50 | private String _key1; |
| 51 | private String _key2; |
| 52 | private ByteArrayBuffer _hixieBytes; |
| 53 | |
| 54 | public WebSocketConnectionD00(WebSocket websocket, EndPoint endpoint, WebSocketBuffers buffers, long timestamp, int maxIdleTime, String protocol) |
| 55 | throws IOException |
| 56 | { |
| 57 | super(endpoint,timestamp); |
| 58 | |
| 59 | _endp.setMaxIdleTime(maxIdleTime); |
| 60 | |
| 61 | _websocket = websocket; |
| 62 | _protocol=protocol; |
| 63 | |
| 64 | _generator = new WebSocketGeneratorD00(buffers, _endp); |
| 65 | _parser = new WebSocketParserD00(buffers, endpoint, new FrameHandlerD00(_websocket)); |
| 66 | } |
| 67 | |
| 68 | /* ------------------------------------------------------------ */ |
| 69 | public org.eclipse.jetty.websocket.WebSocket.Connection getConnection() |
| 70 | { |
| 71 | return this; |
| 72 | } |
| 73 | |
| 74 | |
| 75 | /* ------------------------------------------------------------ */ |
| 76 | public void setHixieKeys(String key1,String key2) |
| 77 | { |
| 78 | _key1=key1; |
| 79 | _key2=key2; |
| 80 | _hixieBytes=new IndirectNIOBuffer(16); |
| 81 | } |
| 82 | |
| 83 | /* ------------------------------------------------------------ */ |
| 84 | public Connection handle() throws IOException |
| 85 | { |
| 86 | try |
| 87 | { |
| 88 | // handle stupid hixie random bytes |
| 89 | if (_hixieBytes!=null) |
| 90 | { |
| 91 | |
| 92 | // take any available bytes from the parser buffer, which may have already been read |
| 93 | Buffer buffer=_parser.getBuffer(); |
| 94 | if (buffer!=null && buffer.length()>0) |
| 95 | { |
| 96 | int l=buffer.length(); |
| 97 | if (l>(8-_hixieBytes.length())) |
| 98 | l=8-_hixieBytes.length(); |
| 99 | _hixieBytes.put(buffer.peek(buffer.getIndex(),l)); |
| 100 | buffer.skip(l); |
| 101 | } |
| 102 | |
| 103 | // while we are not blocked |
| 104 | while(_endp.isOpen()) |
| 105 | { |
| 106 | // do we now have enough |
| 107 | if (_hixieBytes.length()==8) |
| 108 | { |
| 109 | // we have the silly random bytes |
| 110 | // so let's work out the stupid 16 byte reply. |
| 111 | doTheHixieHixieShake(); |
| 112 | _endp.flush(_hixieBytes); |
| 113 | _hixieBytes=null; |
| 114 | _endp.flush(); |
| 115 | break; |
| 116 | } |
| 117 | |
| 118 | // no, then let's fill |
| 119 | int filled=_endp.fill(_hixieBytes); |
| 120 | if (filled<0) |
| 121 | { |
| 122 | _endp.flush(); |
| 123 | _endp.close(); |
| 124 | break; |
| 125 | } |
| 126 | else if (filled==0) |
| 127 | return this; |
| 128 | } |
| 129 | |
| 130 | if (_websocket instanceof OnFrame) |
| 131 | ((OnFrame)_websocket).onHandshake(this); |
| 132 | _websocket.onOpen(this); |
| 133 | return this; |
| 134 | } |
| 135 | |
| 136 | // handle the framing protocol |
| 137 | boolean progress=true; |
| 138 | |
| 139 | while (progress) |
| 140 | { |
| 141 | int flushed=_generator.flush(); |
| 142 | int filled=_parser.parseNext(); |
| 143 | |
| 144 | progress = flushed>0 || filled>0; |
| 145 | |
| 146 | _endp.flush(); |
| 147 | |
| 148 | if (_endp instanceof AsyncEndPoint && ((AsyncEndPoint)_endp).hasProgressed()) |
| 149 | progress=true; |
| 150 | } |
| 151 | } |
| 152 | catch(IOException e) |
| 153 | { |
| 154 | LOG.debug(e); |
| 155 | try |
| 156 | { |
| 157 | if (_endp.isOpen()) |
| 158 | _endp.close(); |
| 159 | } |
| 160 | catch(IOException e2) |
| 161 | { |
| 162 | LOG.ignore(e2); |
| 163 | } |
| 164 | throw e; |
| 165 | } |
| 166 | finally |
| 167 | { |
| 168 | if (_endp.isOpen()) |
| 169 | { |
| 170 | if (_endp.isInputShutdown() && _generator.isBufferEmpty()) |
| 171 | _endp.close(); |
| 172 | else |
| 173 | checkWriteable(); |
| 174 | |
| 175 | checkWriteable(); |
| 176 | } |
| 177 | } |
| 178 | return this; |
| 179 | } |
| 180 | |
| 181 | /* ------------------------------------------------------------ */ |
| 182 | public void onInputShutdown() throws IOException |
| 183 | { |
| 184 | // TODO |
| 185 | } |
| 186 | |
| 187 | /* ------------------------------------------------------------ */ |
| 188 | private void doTheHixieHixieShake() |
| 189 | { |
| 190 | byte[] result=WebSocketConnectionD00.doTheHixieHixieShake( |
| 191 | WebSocketConnectionD00.hixieCrypt(_key1), |
| 192 | WebSocketConnectionD00.hixieCrypt(_key2), |
| 193 | _hixieBytes.asArray()); |
| 194 | _hixieBytes.clear(); |
| 195 | _hixieBytes.put(result); |
| 196 | } |
| 197 | |
| 198 | /* ------------------------------------------------------------ */ |
| 199 | public boolean isOpen() |
| 200 | { |
| 201 | return _endp!=null&&_endp.isOpen(); |
| 202 | } |
| 203 | |
| 204 | /* ------------------------------------------------------------ */ |
| 205 | public boolean isIdle() |
| 206 | { |
| 207 | return _parser.isBufferEmpty() && _generator.isBufferEmpty(); |
| 208 | } |
| 209 | |
| 210 | /* ------------------------------------------------------------ */ |
| 211 | public boolean isSuspended() |
| 212 | { |
| 213 | return false; |
| 214 | } |
| 215 | |
| 216 | /* ------------------------------------------------------------ */ |
| 217 | public void onClose() |
| 218 | { |
| 219 | _websocket.onClose(WebSocketConnectionD06.CLOSE_NORMAL,""); |
| 220 | } |
| 221 | |
| 222 | /* ------------------------------------------------------------ */ |
| 223 | /** |
| 224 | */ |
| 225 | public void sendMessage(String content) throws IOException |
| 226 | { |
| 227 | byte[] data = content.getBytes(StringUtil.__UTF8); |
| 228 | _generator.addFrame((byte)0,SENTINEL_FRAME,data,0,data.length); |
| 229 | _generator.flush(); |
| 230 | checkWriteable(); |
| 231 | } |
| 232 | |
| 233 | /* ------------------------------------------------------------ */ |
| 234 | public void sendMessage(byte[] data, int offset, int length) throws IOException |
| 235 | { |
| 236 | _generator.addFrame((byte)0,LENGTH_FRAME,data,offset,length); |
| 237 | _generator.flush(); |
| 238 | checkWriteable(); |
| 239 | } |
| 240 | |
| 241 | /* ------------------------------------------------------------ */ |
| 242 | public boolean isMore(byte flags) |
| 243 | { |
| 244 | return (flags&0x8) != 0; |
| 245 | } |
| 246 | |
| 247 | /* ------------------------------------------------------------ */ |
| 248 | /** |
| 249 | * {@inheritDoc} |
| 250 | */ |
| 251 | public void sendControl(byte code, byte[] content, int offset, int length) throws IOException |
| 252 | { |
| 253 | } |
| 254 | |
| 255 | /* ------------------------------------------------------------ */ |
| 256 | public void sendFrame(byte flags,byte opcode, byte[] content, int offset, int length) throws IOException |
| 257 | { |
| 258 | _generator.addFrame((byte)0,opcode,content,offset,length); |
| 259 | _generator.flush(); |
| 260 | checkWriteable(); |
| 261 | } |
| 262 | |
| 263 | /* ------------------------------------------------------------ */ |
| 264 | public void close(int code, String message) |
| 265 | { |
| 266 | throw new UnsupportedOperationException(); |
| 267 | } |
| 268 | |
| 269 | /* ------------------------------------------------------------ */ |
| 270 | public void disconnect() |
| 271 | { |
| 272 | close(); |
| 273 | } |
| 274 | |
| 275 | /* ------------------------------------------------------------ */ |
| 276 | public void close() |
| 277 | { |
| 278 | try |
| 279 | { |
| 280 | _generator.flush(); |
| 281 | _endp.close(); |
| 282 | } |
| 283 | catch(IOException e) |
| 284 | { |
| 285 | LOG.ignore(e); |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | public void shutdown() |
| 290 | { |
| 291 | close(); |
| 292 | } |
| 293 | |
| 294 | /* ------------------------------------------------------------ */ |
| 295 | public void fillBuffersFrom(Buffer buffer) |
| 296 | { |
| 297 | _parser.fill(buffer); |
| 298 | } |
| 299 | |
| 300 | |
| 301 | /* ------------------------------------------------------------ */ |
| 302 | private void checkWriteable() |
| 303 | { |
| 304 | if (!_generator.isBufferEmpty() && _endp instanceof AsyncEndPoint) |
| 305 | ((AsyncEndPoint)_endp).scheduleWrite(); |
| 306 | } |
| 307 | |
| 308 | /* ------------------------------------------------------------ */ |
| 309 | static long hixieCrypt(String key) |
| 310 | { |
| 311 | // Don't ask me what all this is about. |
| 312 | // I think it's pretend secret stuff, kind of |
| 313 | // like talking in pig latin! |
| 314 | long number=0; |
| 315 | int spaces=0; |
| 316 | for (char c : key.toCharArray()) |
| 317 | { |
| 318 | if (Character.isDigit(c)) |
| 319 | number=number*10+(c-'0'); |
| 320 | else if (c==' ') |
| 321 | spaces++; |
| 322 | } |
| 323 | return number/spaces; |
| 324 | } |
| 325 | |
| 326 | public static byte[] doTheHixieHixieShake(long key1,long key2,byte[] key3) |
| 327 | { |
| 328 | try |
| 329 | { |
| 330 | MessageDigest md = MessageDigest.getInstance("MD5"); |
| 331 | byte [] fodder = new byte[16]; |
| 332 | |
| 333 | fodder[0]=(byte)(0xff&(key1>>24)); |
| 334 | fodder[1]=(byte)(0xff&(key1>>16)); |
| 335 | fodder[2]=(byte)(0xff&(key1>>8)); |
| 336 | fodder[3]=(byte)(0xff&key1); |
| 337 | fodder[4]=(byte)(0xff&(key2>>24)); |
| 338 | fodder[5]=(byte)(0xff&(key2>>16)); |
| 339 | fodder[6]=(byte)(0xff&(key2>>8)); |
| 340 | fodder[7]=(byte)(0xff&key2); |
| 341 | System.arraycopy(key3, 0, fodder, 8, 8); |
| 342 | md.update(fodder); |
| 343 | return md.digest(); |
| 344 | } |
| 345 | catch (NoSuchAlgorithmException e) |
| 346 | { |
| 347 | throw new IllegalStateException(e); |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | public void setMaxTextMessageSize(int size) |
| 352 | { |
| 353 | } |
| 354 | |
| 355 | public void setMaxIdleTime(int ms) |
| 356 | { |
| 357 | try |
| 358 | { |
| 359 | _endp.setMaxIdleTime(ms); |
| 360 | } |
| 361 | catch(IOException e) |
| 362 | { |
| 363 | LOG.warn(e); |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | public void setMaxBinaryMessageSize(int size) |
| 368 | { |
| 369 | } |
| 370 | |
| 371 | public int getMaxTextMessageSize() |
| 372 | { |
| 373 | return -1; |
| 374 | } |
| 375 | |
| 376 | public int getMaxIdleTime() |
| 377 | { |
| 378 | return _endp.getMaxIdleTime(); |
| 379 | } |
| 380 | |
| 381 | public int getMaxBinaryMessageSize() |
| 382 | { |
| 383 | return -1; |
| 384 | } |
| 385 | |
| 386 | public String getProtocol() |
| 387 | { |
| 388 | return _protocol; |
| 389 | } |
| 390 | |
| 391 | protected void onFrameHandshake() |
| 392 | { |
| 393 | if (_websocket instanceof OnFrame) |
| 394 | { |
| 395 | ((OnFrame)_websocket).onHandshake(this); |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | protected void onWebsocketOpen() |
| 400 | { |
| 401 | _websocket.onOpen(this); |
| 402 | } |
| 403 | |
| 404 | static class FrameHandlerD00 implements WebSocketParser.FrameHandler |
| 405 | { |
| 406 | final WebSocket _websocket; |
| 407 | |
| 408 | FrameHandlerD00(WebSocket websocket) |
| 409 | { |
| 410 | _websocket=websocket; |
| 411 | } |
| 412 | |
| 413 | public void onFrame(byte flags, byte opcode, Buffer buffer) |
| 414 | { |
| 415 | try |
| 416 | { |
| 417 | byte[] array=buffer.array(); |
| 418 | |
| 419 | if (opcode==0) |
| 420 | { |
| 421 | if (_websocket instanceof WebSocket.OnTextMessage) |
| 422 | ((WebSocket.OnTextMessage)_websocket).onMessage(buffer.toString(StringUtil.__UTF8)); |
| 423 | } |
| 424 | else |
| 425 | { |
| 426 | if (_websocket instanceof WebSocket.OnBinaryMessage) |
| 427 | ((WebSocket.OnBinaryMessage)_websocket).onMessage(array,buffer.getIndex(),buffer.length()); |
| 428 | } |
| 429 | } |
| 430 | catch(Throwable th) |
| 431 | { |
| 432 | LOG.warn(th); |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | public void close(int code,String message) |
| 437 | { |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | public boolean isMessageComplete(byte flags) |
| 442 | { |
| 443 | return true; |
| 444 | } |
| 445 | |
| 446 | public byte binaryOpcode() |
| 447 | { |
| 448 | return LENGTH_FRAME; |
| 449 | } |
| 450 | |
| 451 | public byte textOpcode() |
| 452 | { |
| 453 | return SENTINEL_FRAME; |
| 454 | } |
| 455 | |
| 456 | public boolean isControl(byte opcode) |
| 457 | { |
| 458 | return false; |
| 459 | } |
| 460 | |
| 461 | public boolean isText(byte opcode) |
| 462 | { |
| 463 | return (opcode&LENGTH_FRAME)==0; |
| 464 | } |
| 465 | |
| 466 | public boolean isBinary(byte opcode) |
| 467 | { |
| 468 | return (opcode&LENGTH_FRAME)!=0; |
| 469 | } |
| 470 | |
| 471 | public boolean isContinuation(byte opcode) |
| 472 | { |
| 473 | return false; |
| 474 | } |
| 475 | |
| 476 | public boolean isClose(byte opcode) |
| 477 | { |
| 478 | return false; |
| 479 | } |
| 480 | |
| 481 | public boolean isPing(byte opcode) |
| 482 | { |
| 483 | return false; |
| 484 | } |
| 485 | |
| 486 | public boolean isPong(byte opcode) |
| 487 | { |
| 488 | return false; |
| 489 | } |
| 490 | |
| 491 | public List<Extension> getExtensions() |
| 492 | { |
| 493 | return Collections.emptyList(); |
| 494 | } |
| 495 | |
| 496 | public byte continuationOpcode() |
| 497 | { |
| 498 | return 0; |
| 499 | } |
| 500 | |
| 501 | public byte finMask() |
| 502 | { |
| 503 | return 0; |
| 504 | } |
| 505 | |
| 506 | public void setAllowFrameFragmentation(boolean allowFragmentation) |
| 507 | { |
| 508 | } |
| 509 | |
| 510 | public boolean isAllowFrameFragmentation() |
| 511 | { |
| 512 | return false; |
| 513 | } |
| 514 | } |