Mercurial > hg > Members > nobuyasu > tightVNCProxy
annotate src/myVncProxy/MyRfbProto.java @ 149:f68f63c298d0
merge
| author | Yu Taninari <e085734@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Fri, 09 Sep 2011 23:22:58 +0900 |
| parents | 0d9a824dd12f c1d7d4fbcfb9 |
| children | fb1a62154851 |
| rev | line source |
|---|---|
| 24 | 1 package myVncProxy; |
| 54 | 2 |
| 88 | 3 import static org.junit.Assert.*; |
| 4 | |
| 25 | 5 import java.awt.Graphics; |
| 6 import java.awt.Image; | |
| 7 import java.awt.image.BufferedImage; | |
| 8 import java.io.BufferedOutputStream; | |
| 15 | 9 import java.io.BufferedReader; |
| 25 | 10 import java.io.ByteArrayInputStream; |
| 11 import java.io.ByteArrayOutputStream; | |
| 10 | 12 import java.io.IOException; |
| 43 | 13 import java.io.InputStream; |
| 15 | 14 import java.io.InputStreamReader; |
| 23 | 15 import java.net.BindException; |
| 10 | 16 import java.net.ServerSocket; |
| 17 import java.net.Socket; | |
| 90 | 18 import java.nio.ByteBuffer; |
| 93 | 19 import java.util.Iterator; |
| 10 | 20 import java.util.LinkedList; |
| 21 | |
| 25 | 22 import javax.imageio.ImageIO; |
| 23 | |
| 88 | 24 import org.junit.Test; |
| 25 | |
| 54 | 26 import myVncProxy.MulticastQueue.Client; |
| 27 | |
| 40 | 28 import java.util.concurrent.ExecutorService; |
|
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29 import java.util.concurrent.atomic.AtomicInteger; |
| 80 | 30 import java.util.zip.DataFormatException; |
| 31 import java.util.zip.Deflater; | |
| 32 import java.util.zip.Inflater; | |
| 40 | 33 import java.io.OutputStream; |
| 10 | 34 |
| 88 | 35 public |
| 10 | 36 class MyRfbProto extends RfbProto { |
| 43 | 37 final static String versionMsg_3_998 = "RFB 003.998\n"; |
| 65 | 38 /** |
| 39 * CheckMillis is one of new msgType for RFB 3.998. | |
| 40 */ | |
| 90 | 41 final static byte SpeedCheckMillis = 4; |
| 83 | 42 private static final int INFLATE_BUFSIZE = 1024*100; |
| 65 | 43 boolean printStatusFlag = false; |
| 44 long startCheckTime; | |
| 54 | 45 |
| 18 | 46 private int messageType; |
| 47 private int rectangles; | |
| 23 | 48 private int rectX; |
| 49 private int rectY; | |
| 50 private int rectW; | |
| 51 private int rectH; | |
| 18 | 52 private int encoding; |
| 27 | 53 private int zLen; |
| 104 | 54 private boolean clicomp = false; |
| 18 | 55 |
| 23 | 56 private ServerSocket servSock; |
| 144 | 57 protected int acceptPort; |
| 10 | 58 private byte initData[]; |
| 54 | 59 private LinkedList<Socket> cliListTmp; |
| 60 private LinkedList<Socket> cliList; | |
| 27 | 61 boolean createBimgFlag; |
| 54 | 62 |
| 40 | 63 ExecutorService executor; |
| 54 | 64 |
| 25 | 65 byte[] pngBytes; |
| 54 | 66 |
| 102 | 67 // private MulticastQueue<LinkedList<ByteBuffer>> multicastqueue = new MostRecentMultiCast<LinkedList<ByteBuffer>>(10); |
| 68 private MulticastQueue<LinkedList<ByteBuffer>> multicastqueue = new MulticastQueue<LinkedList<ByteBuffer>>(); | |
| 80 | 69 private int clients = 0; |
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70 private Inflater inflater = new Inflater(); |
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71 private Deflater deflater = new Deflater(); |
| 130 | 72 private CreateThread geth; |
| 73 | |
| 88 | 74 public |
| 75 MyRfbProto() throws IOException { | |
| 76 } | |
| 77 | |
| 54 | 78 MyRfbProto(String h, int p, VncViewer v) throws IOException { |
| 10 | 79 super(h, p, v); |
| 80 } | |
| 81 | |
| 130 | 82 MyRfbProto(String h, int p, CreateThread geth) throws IOException { |
| 128 | 83 super(h, p); |
| 130 | 84 this.geth = geth; |
| 128 | 85 } |
| 130 | 86 |
| 13 | 87 MyRfbProto(String h, int p) throws IOException { |
| 88 super(h, p); | |
| 89 } | |
| 24 | 90 |
| 44 | 91 // over write |
| 43 | 92 void writeVersionMsg() throws IOException { |
| 93 clientMajor = 3; | |
| 94 if (serverMinor >= 9) { | |
| 54 | 95 clientMinor = 9; |
| 96 os.write(versionMsg_3_998.getBytes()); | |
| 43 | 97 } else if (serverMajor > 3 || serverMinor >= 8) { |
| 98 clientMinor = 8; | |
| 99 os.write(versionMsg_3_8.getBytes()); | |
| 100 } else if (serverMinor >= 9) { | |
| 101 clientMinor = 9; | |
| 102 os.write(versionMsg_3_998.getBytes()); | |
| 103 } else if (serverMinor >= 7) { | |
| 104 clientMinor = 7; | |
| 105 os.write(versionMsg_3_7.getBytes()); | |
| 106 } else { | |
| 107 clientMinor = 3; | |
| 108 os.write(versionMsg_3_3.getBytes()); | |
| 109 } | |
| 110 protocolTightVNC = false; | |
| 111 initCapabilities(); | |
| 112 } | |
| 113 | |
| 54 | 114 void initServSock(int port) throws IOException { |
| 10 | 115 servSock = new ServerSocket(port); |
| 23 | 116 acceptPort = port; |
| 10 | 117 } |
| 54 | 118 |
| 122 | 119 // 5999を開けるが、開いてないなら+1のポートを開ける。 |
| 80 | 120 void selectPort(int p) { |
| 144 | 121 if(servSock != null ) return ; |
| 80 | 122 int port = p; |
| 54 | 123 while (true) { |
| 124 try { | |
| 80 | 125 initServSock(port); |
| 23 | 126 break; |
| 54 | 127 } catch (BindException e) { |
| 80 | 128 port++; |
| 23 | 129 continue; |
| 54 | 130 } catch (IOException e) { |
| 10 | 131 |
| 23 | 132 } |
| 133 } | |
| 80 | 134 System.out.println("accept port = " + port); |
| 23 | 135 } |
| 54 | 136 |
| 137 int getAcceptPort() { | |
| 23 | 138 return acceptPort; |
| 139 } | |
| 54 | 140 |
| 10 | 141 void setSoTimeout(int num) throws IOException { |
| 142 servSock.setSoTimeout(num); | |
| 143 } | |
| 54 | 144 |
| 10 | 145 Socket accept() throws IOException { |
| 146 return servSock.accept(); | |
| 147 } | |
| 148 | |
| 54 | 149 void addSock(Socket sock) { |
| 10 | 150 cliList.add(sock); |
| 151 } | |
| 54 | 152 |
| 153 void addSockTmp(Socket sock) { | |
| 154 System.out.println("connected " + sock.getInetAddress()); | |
| 27 | 155 cliListTmp.add(sock); |
| 156 } | |
| 54 | 157 |
| 10 | 158 boolean markSupported() { |
| 159 return is.markSupported(); | |
| 160 } | |
| 54 | 161 |
| 10 | 162 void readServerInit() throws IOException { |
| 54 | 163 |
| 78 | 164 is.mark(255); |
| 10 | 165 skipBytes(20); |
| 166 int nlen = readU32(); | |
| 54 | 167 int blen = 20 + 4 + nlen; |
| 10 | 168 initData = new byte[blen]; |
| 78 | 169 is.reset(); |
| 10 | 170 |
| 78 | 171 is.mark(blen); |
| 10 | 172 readFully(initData); |
| 78 | 173 is.reset(); |
| 54 | 174 |
| 10 | 175 framebufferWidth = readU16(); |
| 176 framebufferHeight = readU16(); | |
| 177 bitsPerPixel = readU8(); | |
| 178 depth = readU8(); | |
| 179 bigEndian = (readU8() != 0); | |
| 180 trueColour = (readU8() != 0); | |
| 181 redMax = readU16(); | |
| 182 greenMax = readU16(); | |
| 183 blueMax = readU16(); | |
| 184 redShift = readU8(); | |
| 185 greenShift = readU8(); | |
| 186 blueShift = readU8(); | |
| 187 byte[] pad = new byte[3]; | |
| 188 readFully(pad); | |
| 189 int nameLength = readU32(); | |
| 190 byte[] name = new byte[nameLength]; | |
| 191 readFully(name); | |
| 192 desktopName = new String(name); | |
| 193 | |
| 194 // Read interaction capabilities (TightVNC protocol extensions) | |
| 195 if (protocolTightVNC) { | |
| 196 int nServerMessageTypes = readU16(); | |
| 197 int nClientMessageTypes = readU16(); | |
| 198 int nEncodingTypes = readU16(); | |
| 199 readU16(); | |
| 200 readCapabilityList(serverMsgCaps, nServerMessageTypes); | |
| 201 readCapabilityList(clientMsgCaps, nClientMessageTypes); | |
| 202 readCapabilityList(encodingCaps, nEncodingTypes); | |
| 203 } | |
| 204 | |
| 205 inNormalProtocol = true; | |
| 206 } | |
| 207 | |
| 54 | 208 void sendRfbVersion(OutputStream os) throws IOException { |
| 138 | 209 os.write(versionMsg_3_998.getBytes()); |
| 210 // os.write(versionMsg_3_8.getBytes()); | |
| 43 | 211 } |
| 54 | 212 |
| 131 | 213 void readVersionMsg(InputStream is, OutputStream os) throws IOException { |
| 45 | 214 |
| 215 byte[] b = new byte[12]; | |
| 216 | |
| 217 is.read(b); | |
| 218 | |
| 219 if ((b[0] != 'R') || (b[1] != 'F') || (b[2] != 'B') || (b[3] != ' ') | |
| 220 || (b[4] < '0') || (b[4] > '9') || (b[5] < '0') || (b[5] > '9') | |
| 221 || (b[6] < '0') || (b[6] > '9') || (b[7] != '.') | |
| 222 || (b[8] < '0') || (b[8] > '9') || (b[9] < '0') || (b[9] > '9') | |
| 223 || (b[10] < '0') || (b[10] > '9') || (b[11] != '\n')) { | |
| 224 throw new IOException("Host " + host + " port " + port | |
| 225 + " is not an RFB server"); | |
| 226 } | |
| 227 | |
| 228 serverMajor = (b[4] - '0') * 100 + (b[5] - '0') * 10 + (b[6] - '0'); | |
| 229 serverMinor = (b[8] - '0') * 100 + (b[9] - '0') * 10 + (b[10] - '0'); | |
| 230 | |
| 231 if (serverMajor < 3) { | |
| 232 throw new IOException( | |
| 141 | 233 "RFB server does not support protocol version 3"); |
| 54 | 234 } |
| 235 | |
| 130 | 236 if (serverMinor == 998) { |
| 131 | 237 sendPortNumber(os); |
| 130 | 238 } |
| 239 | |
| 240 } | |
| 241 | |
| 131 | 242 void sendPortNumber(OutputStream os) throws IOException { |
| 130 | 243 byte[] b = new byte[4]; |
| 244 b = castIntByte(geth.port); | |
| 245 os.write(b); | |
| 54 | 246 } |
| 247 | |
| 43 | 248 void sendSecurityType(OutputStream os) throws IOException { |
| 249 // number-of-security-types | |
| 250 os.write(1); | |
| 54 | 251 // security-types |
| 43 | 252 // 1:None |
| 253 os.write(1); | |
| 254 } | |
| 54 | 255 |
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256 void readSecType(InputStream is) throws IOException { |
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257 byte[] b = new byte[1]; |
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258 is.read(b); |
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259 |
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260 } |
| 54 | 261 |
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262 void sendSecResult(OutputStream os) throws IOException { |
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263 byte[] b = castIntByte(0); |
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264 os.write(b); |
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265 } |
| 54 | 266 |
| 43 | 267 void readClientInit(InputStream in) throws IOException { |
| 268 byte[] b = new byte[0]; | |
| 269 in.read(b); | |
| 270 } | |
| 54 | 271 |
| 272 void sendInitData(OutputStream os) throws IOException { | |
| 273 os.write(initData); | |
| 10 | 274 } |
| 275 | |
| 54 | 276 |
| 277 void sendPngImage() { | |
| 278 try { | |
| 279 for (Socket cli : cliListTmp) { | |
| 280 try { | |
| 27 | 281 sendPngData(cli); |
| 282 addSock(cli); | |
| 54 | 283 } catch (IOException e) { |
| 27 | 284 // if socket closed |
| 285 cliListTmp.remove(cli); | |
| 286 } | |
| 287 } | |
| 54 | 288 // System.out.println("cliSize="+cliSize()); |
| 289 } catch (Exception e) { | |
| 27 | 290 } |
| 291 cliListTmp.clear(); | |
| 292 } | |
| 293 | |
| 15 | 294 boolean ready() throws IOException { |
| 295 BufferedReader br = new BufferedReader(new InputStreamReader(is)); | |
| 296 return br.ready(); | |
| 54 | 297 } |
| 10 | 298 |
| 54 | 299 int cliSize() { |
| 10 | 300 return cliList.size(); |
| 54 | 301 } |
| 302 | |
| 303 void printNumBytesRead() { | |
| 304 System.out.println("numBytesRead=" + numBytesRead); | |
| 305 } | |
| 306 | |
| 307 | |
| 61 | 308 |
| 54 | 309 void regiFramebufferUpdate() throws IOException { |
| 78 | 310 is.mark(20); |
| 80 | 311 messageType = readU8(); // 0 |
| 312 skipBytes(1); // 1 | |
| 313 rectangles = readU16(); // 2 | |
| 314 rectX = readU16(); // 4 | |
| 315 rectY = readU16(); // 6 | |
| 316 rectW = readU16(); // 8 | |
| 317 rectH = readU16(); // 10 | |
| 318 encoding = readU32(); // 12 | |
| 122 | 319 // System.out.println("encoding = "+encoding); |
| 107 | 320 if (encoding == EncodingZRLE|| encoding==EncodingZRLEE||encoding==EncodingZlib) |
| 27 | 321 zLen = readU32(); |
| 80 | 322 else |
| 323 zLen = 0; | |
| 78 | 324 is.reset(); |
| 127 | 325 |
| 15 | 326 } |
| 54 | 327 |
| 61 | 328 int checkAndMark() throws IOException { |
| 67 | 329 int dataLen; |
| 330 switch (encoding) { | |
| 331 case RfbProto.EncodingRaw: | |
| 332 dataLen = rectW * rectH * 4 + 16; | |
| 130 | 333 // is.mark(dataLen); |
| 128 | 334 break; |
| 67 | 335 case RfbProto.EncodingCopyRect: |
| 336 dataLen = 16 + 4; | |
| 130 | 337 // is.mark(dataLen); |
| 67 | 338 break; |
| 339 case RfbProto.EncodingRRE: | |
| 340 case RfbProto.EncodingCoRRE: | |
| 341 case RfbProto.EncodingHextile: | |
| 80 | 342 case RfbProto.EncodingTight: |
| 343 dataLen = zLen + 20; | |
| 130 | 344 // is.mark(dataLen); |
| 128 | 345 break; |
| 67 | 346 case RfbProto.EncodingZlib: |
| 27 | 347 case RfbProto.EncodingZRLE: |
| 107 | 348 case RfbProto.EncodingZRLEE: |
| 126 | 349 dataLen = zLen + 20; |
| 130 | 350 // is.mark(dataLen); |
| 78 | 351 break; |
| 352 case RfbProto.EncodingXCursor: | |
| 353 case RfbProto.EncodingRichCursor: | |
| 354 int pixArray = rectW * rectH * 4; | |
| 355 int u8Array = (int)Math.floor((rectW + 7)/8) * rectH; | |
| 356 dataLen = pixArray + u8Array; | |
| 357 printFramebufferUpdate(); | |
| 130 | 358 // is.mark(dataLen); |
| 27 | 359 break; |
| 23 | 360 default: |
| 61 | 361 dataLen = 1000000; |
| 130 | 362 // is.mark(dataLen); |
| 54 | 363 } |
| 61 | 364 return dataLen; |
| 365 } | |
| 65 | 366 |
| 367 | |
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368 void sendDataToClient() throws Exception { |
| 61 | 369 regiFramebufferUpdate(); |
| 135 | 370 // printFramebufferUpdate(); |
| 61 | 371 int dataLen = checkAndMark(); |
| 372 readSendData(dataLen); | |
| 23 | 373 } |
| 54 | 374 |
| 375 BufferedImage createBufferedImage(Image img) { | |
| 376 BufferedImage bimg = new BufferedImage(img.getWidth(null), | |
| 377 img.getHeight(null), BufferedImage.TYPE_INT_RGB); | |
| 27 | 378 |
| 25 | 379 Graphics g = bimg.getGraphics(); |
| 380 g.drawImage(img, 0, 0, null); | |
| 381 g.dispose(); | |
| 382 return bimg; | |
| 383 } | |
| 384 | |
| 54 | 385 void createPngBytes(BufferedImage bimg) throws IOException { |
| 386 pngBytes = getImageBytes(bimg, "png"); | |
| 25 | 387 } |
| 54 | 388 |
| 389 byte[] getBytes(BufferedImage img) throws IOException { | |
| 25 | 390 byte[] b = getImageBytes(img, "png"); |
| 391 return b; | |
| 392 } | |
| 54 | 393 |
| 394 byte[] getImageBytes(BufferedImage image, String imageFormat) | |
| 395 throws IOException { | |
| 25 | 396 ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
| 397 BufferedOutputStream os = new BufferedOutputStream(bos); | |
| 398 image.flush(); | |
| 399 ImageIO.write(image, imageFormat, os); | |
| 400 os.flush(); | |
| 401 os.close(); | |
| 402 return bos.toByteArray(); | |
| 403 } | |
| 404 | |
| 54 | 405 void sendPngData(Socket sock) throws IOException { |
| 26 | 406 byte[] dataLength = castIntByte(pngBytes.length); |
| 407 sock.getOutputStream().write(dataLength); | |
| 25 | 408 sock.getOutputStream().write(pngBytes); |
| 409 } | |
| 54 | 410 |
| 411 byte[] castIntByte(int len) { | |
| 26 | 412 byte[] b = new byte[4]; |
| 54 | 413 b[0] = (byte) ((len >>> 24) & 0xFF); |
| 414 b[1] = (byte) ((len >>> 16) & 0xFF); | |
| 415 b[2] = (byte) ((len >>> 8) & 0xFF); | |
| 416 b[3] = (byte) ((len >>> 0) & 0xFF); | |
| 26 | 417 return b; |
| 418 } | |
| 54 | 419 |
| 420 BufferedImage createBimg() throws IOException { | |
| 25 | 421 BufferedImage bimg = ImageIO.read(new ByteArrayInputStream(pngBytes)); |
| 422 return bimg; | |
| 423 } | |
| 104 | 424 |
| 54 | 425 void printFramebufferUpdate() { |
| 426 | |
| 18 | 427 System.out.println("messageType=" + messageType); |
| 54 | 428 System.out.println("rectangles=" + rectangles); |
| 18 | 429 System.out.println("encoding=" + encoding); |
| 78 | 430 System.out.println("rectX = "+rectX+": rectY = "+rectY); |
| 431 System.out.println("rectW = "+rectW+": rectH = "+rectH); | |
| 54 | 432 switch (encoding) { |
| 23 | 433 case RfbProto.EncodingRaw: |
| 54 | 434 System.out.println("rectW * rectH * 4 + 16 =" + rectW * rectH * 4 |
| 435 + 16); | |
| 23 | 436 break; |
| 437 default: | |
| 438 } | |
| 18 | 439 } |
| 130 | 440 int returnMsgtype() { |
| 441 return messageType; | |
| 442 } | |
| 443 | |
| 65 | 444 |
| 77 | 445 void readSpeedCheck() throws IOException { |
| 446 byte[] b = new byte[1]; | |
| 65 | 447 readFully(b); |
| 448 } | |
| 449 | |
| 77 | 450 void startSpeedCheck() { |
| 90 | 451 ByteBuffer b = ByteBuffer.allocate(10); |
| 452 b.put((byte)SpeedCheckMillis); | |
| 453 b.flip(); | |
| 66 | 454 startCheckTime = System.currentTimeMillis(); |
| 455 System.out.println("startChckTime = "+ startCheckTime); | |
| 90 | 456 LinkedList<ByteBuffer>bufs = new LinkedList<ByteBuffer>(); |
| 84 | 457 bufs.add(b); |
| 458 multicastqueue.put(bufs); | |
| 65 | 459 } |
| 460 | |
| 77 | 461 void endSpeedCheck() { |
| 65 | 462 long accTime = System.currentTimeMillis(); |
| 463 long time = accTime - startCheckTime; | |
| 464 System.out.println("checkMillis: " + time); | |
| 465 } | |
| 466 | |
| 467 | |
| 468 synchronized void changeStatusFlag() { | |
| 469 printStatusFlag = true; | |
| 470 } | |
| 471 | |
| 472 void printMills() { | |
| 473 if(printStatusFlag) { | |
| 474 | |
| 475 changeStatusFlag(); | |
| 476 } else { | |
| 477 changeStatusFlag(); | |
| 478 } | |
| 479 } | |
| 480 | |
| 77 | 481 void speedCheckMillis() { |
| 87 | 482 Runnable stdin = new Runnable() { |
| 66 | 483 public void run() { |
| 484 int c; | |
| 485 try { | |
| 486 while( (c = System.in.read()) != -1 ) { | |
| 487 switch(c) { | |
| 488 case 's': | |
| 489 break; | |
| 490 default: | |
| 87 | 491 startSpeedCheck(); |
| 66 | 492 break; |
| 493 } | |
| 494 } | |
| 495 }catch(IOException e){ | |
| 496 System.out.println(e); | |
| 497 } | |
| 498 } | |
| 499 }; | |
| 500 | |
| 501 new Thread(stdin).start(); | |
| 502 } | |
| 503 | |
| 87 | 504 /** |
| 505 * gzip byte arrays | |
| 506 * @param deflater | |
| 507 * @param inputs | |
| 508 * byte data[] | |
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509 * @param inputIndex |
| 87 | 510 * @param outputs |
| 511 * byte data[] | |
| 512 * @return byte length in last byte array | |
| 513 * @throws IOException | |
| 514 */ | |
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515 public int zip(Deflater deflater,LinkedList<ByteBuffer> inputs, int inputIndex, LinkedList<ByteBuffer> outputs) throws IOException { |
| 102 | 516 int len = 0; |
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517 ByteBuffer c1= ByteBuffer.allocate(INFLATE_BUFSIZE); |
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518 while(inputIndex < inputs.size() ) { |
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519 ByteBuffer b1 = inputs.get(inputIndex++); |
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520 deflater.setInput(b1.array(),b1.position(),b1.remaining()); |
| 106 | 521 /** |
| 522 * If we finish() stream and reset() it, Deflater start new gzip stream, this makes continuous zlib reader unhappy. | |
| 523 * if we remove finish(), Deflater.deflate() never flushes its output. The original zlib deflate has flush flag. I'm pretty | |
| 524 * sure this a kind of bug of Java library. | |
| 525 */ | |
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526 if (inputIndex==inputs.size()) |
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527 deflater.finish(); |
| 106 | 528 int len1 = 0; |
| 86 | 529 do { |
| 106 | 530 len1 = deflater.deflate(c1.array(),c1.position(),c1.remaining()); |
| 102 | 531 if (len1>0) { |
| 532 len += len1; | |
| 533 c1.position(c1.position()+len1); | |
| 534 if (c1.remaining()==0) { | |
| 535 c1.flip(); outputs.addLast(c1); | |
| 536 c1 = ByteBuffer.allocate(INFLATE_BUFSIZE); | |
| 537 } | |
| 86 | 538 } |
| 106 | 539 } while (len1 >0 || !deflater.needsInput()); // &&!deflater.finished()); |
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540 } |
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541 if (c1.position()!=0) { |
| 102 | 542 c1.flip(); outputs.addLast(c1); |
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543 } |
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544 deflater.reset(); |
| 90 | 545 return len; |
| 86 | 546 } |
| 87 | 547 |
| 548 /** | |
| 549 * gunzip byte arrays | |
| 550 * @param inflater | |
| 551 * @param inputs | |
| 552 * byte data[] | |
| 553 * @param outputs | |
| 554 * byte data[] | |
| 91 | 555 *@return number of total bytes |
| 87 | 556 * @throws IOException |
| 557 */ | |
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558 public int unzip(Inflater inflater, LinkedList<ByteBuffer> inputs, int inputIndex, LinkedList<ByteBuffer> outputs,int bufSize) |
| 88 | 559 throws DataFormatException { |
| 102 | 560 int len=0; |
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561 ByteBuffer buf = ByteBuffer.allocate(bufSize); |
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562 while (inputIndex < inputs.size()) { |
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563 ByteBuffer input = inputs.get(inputIndex++); |
| 102 | 564 inflater.setInput(input.array(),input.position(),input.limit()); |
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565 // if (inputIndex==inputs.size()) if inflater/deflater has symmetry, we need this |
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566 // inflater.end(); but this won't work |
| 88 | 567 do { |
| 102 | 568 int len0 = inflater.inflate(buf.array(),buf.position(),buf.remaining()); |
| 569 if (len0>0) { | |
| 570 buf.position(buf.position()+len0); | |
| 571 len += len0; | |
| 572 if (buf.remaining()==0) { | |
| 573 buf.flip(); | |
| 574 outputs.addLast(buf); | |
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575 buf = ByteBuffer.allocate(bufSize); |
| 102 | 576 } |
| 91 | 577 } |
| 102 | 578 } while (!inflater.needsInput()); |
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579 } |
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580 if (buf.position()!=0) { |
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581 buf.flip(); |
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582 outputs.addLast(buf); |
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583 } |
| 90 | 584 return len; |
| 86 | 585 } |
| 65 | 586 |
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587 /** |
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588 * send data to clients |
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589 * @param dataLen |
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590 * @throws IOException |
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591 * @throws DataFormatException |
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592 * |
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593 * Zlibed packet is compressed in context dependent way, that is, it have to send from the beginning. But this is |
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594 * impossible. So we have to compress it again for each clients. Separate deflater for each clients is necessary. |
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595 * |
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596 * Java's deflater does not support flush. This means to get the result, we have to finish the compression. Reseting |
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597 * start new compression, but it is not accepted well in zlib continuous reading. So we need new Encoding ZRLEE |
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598 * which reset decoder for each packet. ZRLEE can be invisible from user, but it have to be implemented in the clients. |
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599 * ZRLEE compression is not context dependent, so no recompression is necessary. |
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600 */ |
| 86 | 601 void readSendData(int dataLen) throws IOException, DataFormatException { |
| 148 | 602 |
| 90 | 603 LinkedList<ByteBuffer>bufs = new LinkedList<ByteBuffer>(); |
| 604 ByteBuffer header = ByteBuffer.allocate(16); | |
| 605 readFully(header.array(),0,16); | |
| 606 header.limit(16); | |
| 607 if (header.get(0)==RfbProto.FramebufferUpdate) { | |
| 608 int encoding = header.getInt(12); | |
| 107 | 609 if (encoding==RfbProto.EncodingZRLE||encoding==RfbProto.EncodingZlib) { // ZRLEE is already recompressed |
| 90 | 610 ByteBuffer len = ByteBuffer.allocate(4); |
| 611 readFully(len.array(),0,4); len.limit(4); | |
| 612 ByteBuffer inputData = ByteBuffer.allocate(dataLen-20); | |
| 613 readFully(inputData.array(),0,inputData.capacity()); inputData.limit(dataLen-20); | |
| 614 LinkedList<ByteBuffer>inputs = new LinkedList<ByteBuffer>(); | |
| 88 | 615 inputs.add(inputData); |
| 107 | 616 |
| 617 header.putInt(12, RfbProto.EncodingZRLEE); // means recompress every time | |
| 618 // using new Deflecter every time is incompatible with the protocol, clients have to be modified. | |
| 619 Deflater nDeflater = deflater; // new Deflater(); | |
| 620 LinkedList<ByteBuffer> out = new LinkedList<ByteBuffer>(); | |
| 621 unzip(inflater, inputs, 0 , out, INFLATE_BUFSIZE); | |
| 622 // dump32(inputs); | |
| 623 int len2 = zip(nDeflater, out, 0, bufs); | |
| 624 ByteBuffer blen = ByteBuffer.allocate(4); blen.putInt(len2); blen.flip(); | |
| 625 bufs.addFirst(blen); | |
| 626 | |
| 87 | 627 bufs.addFirst(header); |
| 86 | 628 multicastqueue.put(bufs); |
| 130 | 629 |
| 630 // is.reset(); | |
| 86 | 631 return ; |
| 632 } | |
| 87 | 633 bufs.add(header); |
| 634 if (dataLen>16) { | |
| 90 | 635 ByteBuffer b = ByteBuffer.allocate(dataLen-16); |
| 636 readFully(b.array(),0,dataLen-16); b.limit(dataLen-16); | |
| 87 | 637 bufs.add(b); |
| 638 } | |
| 86 | 639 multicastqueue.put(bufs); |
| 135 | 640 // is.reset(); |
| 641 return ; | |
| 130 | 642 } |
| 643 is.reset(); | |
| 86 | 644 |
| 645 // It may be compressed. We can inflate here to avoid repeating clients decompressing here, | |
| 646 // but it may generate too many large data. It is better to do it in each client. | |
| 647 // But we have do inflation for all input data, so we have to do it here. | |
| 648 } | |
| 148 | 649 |
| 43 | 650 |
| 71 | 651 void newClient(AcceptThread acceptThread, final Socket newCli, |
| 54 | 652 final OutputStream os, final InputStream is) throws IOException { |
| 653 // createBimgFlag = true; | |
| 654 // rfb.addSockTmp(newCli); | |
| 655 // addSock(newCli); | |
| 112 | 656 final int myId = clients; |
| 90 | 657 final Client <LinkedList<ByteBuffer>> c = multicastqueue.newClient(); |
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658 final AtomicInteger writerRunning = new AtomicInteger(); |
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659 writerRunning.set(1); |
| 112 | 660 /** |
| 661 * Timeout thread. If a client is suspended, it has top of queue indefinitely, which caused memory | |
| 662 * overflow. After the timeout, we poll the queue and discard it. Start long wait if writer is running. | |
| 663 */ | |
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664 final Runnable timer = new Runnable() { |
| 128 | 665 public void run() { |
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666 int count = 0; |
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667 for(;;) { |
| 114 | 668 long timeout = 30000/8; |
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669 try { |
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670 synchronized(this) { |
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671 int state,flag; |
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672 writerRunning.set(0); |
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673 wait(timeout); |
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674 flag = 0; |
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675 while((state=writerRunning.get())==0) { |
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676 c.poll(); // discard, should be timeout |
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677 count++; |
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678 if (flag==0) { |
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679 System.out.println("Discarding "+myId + " count="+ count); flag = 1; |
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680 } |
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681 wait(10); // if this is too short, writer cannot take the poll, if this is too long, memory will overflow... |
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682 } |
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683 if (flag==1) System.out.println("Resuming "+myId + " count="+count); |
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684 if (state!=1) { |
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685 System.out.println("Client died "+myId); |
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686 break; |
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687 } |
| 128 | 688 } |
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689 } catch (InterruptedException e) { |
| 128 | 690 } |
| 691 } | |
| 692 } | |
| 693 }; | |
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694 new Thread(timer).start(); |
| 112 | 695 /** |
| 696 * discard all incoming from clients | |
| 697 */ | |
| 102 | 698 final Runnable reader = new Runnable() { |
| 699 public void run() { | |
| 700 byte b[] = new byte[4096]; | |
| 701 for(;;) { | |
| 702 try { | |
| 703 int c = is.read(b); | |
| 704 if (c<=0) throw new IOException(); | |
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705 // System.out.println("client read "+c); |
| 102 | 706 } catch (IOException e) { |
| 707 try { | |
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708 writerRunning.set(2); |
| 102 | 709 os.close(); |
| 710 is.close(); | |
| 711 } catch (IOException e1) { | |
| 712 } | |
| 713 return; | |
| 714 } | |
| 715 } | |
| 716 } | |
| 717 }; | |
| 112 | 718 /** |
| 719 * send packets to a client | |
| 720 */ | |
| 54 | 721 Runnable sender = new Runnable() { |
| 722 public void run() { | |
|
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723 writerRunning.set(1); |
| 54 | 724 try { |
| 65 | 725 /** |
| 726 * initial connection of RFB protocol | |
| 727 */ | |
| 54 | 728 sendRfbVersion(os); |
| 131 | 729 // readVersionMsg(is); |
| 730 readVersionMsg(is,os); | |
| 54 | 731 sendSecurityType(os); |
| 732 readSecType(is); | |
| 733 sendSecResult(os); | |
| 734 readClientInit(is); | |
| 735 sendInitData(os); | |
| 112 | 736 new Thread(reader).start(); // discard incoming packet here after. |
| 54 | 737 for (;;) { |
| 90 | 738 LinkedList<ByteBuffer> bufs = c.poll(); |
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739 int inputIndex = 0; |
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740 ByteBuffer header = bufs.get(inputIndex); |
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741 if (header==null) continue; |
| 90 | 742 if (header.get(0)==RfbProto.FramebufferUpdate) { |
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743 // System.out.println("client "+ myId); |
| 87 | 744 } |
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745 writeToClient(os, bufs, inputIndex); |
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746 writerRunning.set(1); // yes my client is awaking. |
| 54 | 747 } |
| 748 } catch (IOException e) { | |
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749 try { |
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750 writerRunning.set(2); |
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751 os.close(); |
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752 } catch (IOException e1) { |
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753 } |
| 87 | 754 /* if socket closed cliList.remove(newCli); */ |
| 54 | 755 } |
| 756 } | |
| 128 | 757 |
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758 public void writeToClient(final OutputStream os, |
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759 LinkedList<ByteBuffer> bufs, int inputIndex) |
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760 throws IOException { |
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761 while(inputIndex < bufs.size()) { |
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762 ByteBuffer b = bufs.get(inputIndex++); |
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763 os.write(b.array(), b.position(), b.limit()); |
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764 } |
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765 os.flush(); |
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766 } |
| 54 | 767 }; |
| 80 | 768 clients++; |
| 54 | 769 new Thread(sender).start(); |
| 770 | |
| 771 } | |
| 66 | 772 |
| 773 | |
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774 public void dump32(LinkedList<ByteBuffer>bufs) { |
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775 int len =0; |
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776 for(ByteBuffer b: bufs) len += b.remaining(); |
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777 ByteBuffer top = bufs.getFirst(); |
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778 ByteBuffer end = bufs.getLast(); |
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779 System.err.println("length: "+len); |
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780 System.err.print("head 0: "); |
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781 for(int i = 0; i<16 && i < top.remaining(); i++) { |
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782 System.err.print(" "+ top.get(i)); |
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783 } |
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784 System.err.print("tail 0: "); |
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785 for(int i = 0; i<16 && i < end.remaining(); i++) { |
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786 System.err.print(" "+end.get(i)); |
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787 } |
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788 System.err.println(); |
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789 } |
| 88 | 790 |
| 791 @Test | |
| 792 public void test1() { | |
| 793 try { | |
| 90 | 794 LinkedList<ByteBuffer> in = new LinkedList<ByteBuffer>(); |
| 795 LinkedList<ByteBuffer> out = new LinkedList<ByteBuffer>(); | |
| 796 LinkedList<ByteBuffer> out2 = new LinkedList<ByteBuffer>(); | |
| 107 | 797 // if (false) { |
| 798 // for(int i=0;i<10;i++) { | |
| 799 // in.add(ByteBuffer.wrap("test1".getBytes())); | |
| 800 // in.add(ByteBuffer.wrap("test2".getBytes())); | |
| 801 // in.add(ByteBuffer.wrap("test3".getBytes())); | |
| 802 // in.add(ByteBuffer.wrap("test44".getBytes())); | |
| 803 // } | |
| 804 // } else | |
| 805 { | |
| 106 | 806 String t = ""; |
| 807 for(int i=0;i<10;i++) { | |
| 808 t += "test1"; | |
| 809 t += "test2"; | |
| 810 t += "test3"; | |
| 811 t += "test44"; | |
| 812 } | |
| 813 in.add(ByteBuffer.wrap(t.getBytes())); | |
| 814 } | |
| 815 | |
| 92 | 816 LinkedList<ByteBuffer> in1 = clone(in); |
| 90 | 817 |
| 88 | 818 Deflater deflater = new Deflater(); |
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819 zip(deflater,in,0,out); |
| 92 | 820 // LinkedList<ByteBuffer> out3 = clone(out); zipped result is depend on deflator's state |
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821 unzip(inflater, out, 0,out2, INFLATE_BUFSIZE); |
| 106 | 822 // inflater.reset(); |
| 92 | 823 equalByteBuffers(in1, out2); |
| 824 LinkedList<ByteBuffer> out4 = new LinkedList<ByteBuffer>(); | |
| 104 | 825 deflater = new Deflater(); |
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826 zip(deflater,out2,0,out4); |
| 92 | 827 LinkedList<ByteBuffer> out5 = new LinkedList<ByteBuffer>(); |
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828 unzip(inflater,out4,0, out5, INFLATE_BUFSIZE); |
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829 int len = equalByteBuffers(in1,out5); |
| 92 | 830 |
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831 System.out.println("Test Ok. "+len); |
| 88 | 832 } catch (Exception e) { |
| 833 assertEquals(0,1); | |
| 834 } | |
| 835 } | |
| 836 | |
| 92 | 837 private LinkedList<ByteBuffer> clone(LinkedList<ByteBuffer> in) { |
| 838 LinkedList<ByteBuffer> copy = new LinkedList<ByteBuffer>(); | |
| 839 for(ByteBuffer b: in) { | |
| 840 ByteBuffer c = b.duplicate(); | |
| 841 copy.add(c); | |
| 842 } | |
| 843 return copy; | |
| 844 } | |
| 845 | |
| 93 | 846 |
| 847 | |
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848 public int equalByteBuffers(LinkedList<ByteBuffer> in, |
| 92 | 849 LinkedList<ByteBuffer> out2) { |
|
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850 int len = 0; |
| 93 | 851 Iterable<Byte> i = byteBufferIterator(in); |
| 852 Iterator<Byte> o = byteBufferIterator(out2).iterator(); | |
| 853 | |
| 854 for(int b: i) { | |
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855 len ++; |
| 93 | 856 if (o.hasNext()) { |
| 857 int c = o.next(); | |
| 858 assertEquals(b,c); | |
| 859 } else | |
| 860 assertEquals(0,1); | |
| 861 } | |
| 104 | 862 if (o.hasNext()) |
| 863 assertEquals(0,1); | |
| 93 | 864 // System.out.println(); |
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865 return len; |
| 93 | 866 } |
| 867 | |
| 868 private Iterable<Byte> byteBufferIterator(final LinkedList<ByteBuffer> in) { | |
| 869 return new Iterable<Byte>() { | |
| 870 public Iterator<Byte> iterator() { | |
| 871 return new Iterator<Byte>() { | |
| 872 int bytes = 0; | |
| 873 int buffers = 0; | |
| 874 public boolean hasNext() { | |
| 104 | 875 for(;;) { |
| 876 if (buffers>=in.size()) return false; | |
| 877 ByteBuffer b = in.get(buffers); | |
| 878 if (! (bytes<b.remaining())) { | |
| 879 buffers ++; bytes=0; | |
| 880 } else return true; | |
| 881 } | |
| 92 | 882 } |
| 93 | 883 public Byte next() { |
| 104 | 884 ByteBuffer bf =in.get(buffers); |
| 93 | 885 byte b = bf.get(bytes++); |
| 886 if (bf.remaining()<=bytes) { | |
| 887 buffers++; | |
| 888 bytes = 0; | |
| 889 } | |
| 890 // System.out.print(b); | |
| 891 return b; | |
| 892 } | |
| 893 public void remove() { | |
| 894 } | |
| 895 }; | |
| 92 | 896 } |
| 93 | 897 }; |
| 128 | 898 } |
| 899 | |
| 54 | 900 } |
| 66 | 901 |
| 902 |