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   1 /**
   2  * Copyright (c) 2010-2023 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.androidtv.internal.protocol.googletv;
  14
  15 import static org.openhab.binding.androidtv.internal.AndroidTVBindingConstants.*;
  16 import static org.openhab.binding.androidtv.internal.protocol.googletv.GoogleTVConstants.*;
  17
  18 import java.io.BufferedReader;
  19 import java.io.BufferedWriter;
  20 import java.io.File;
  21 import java.io.IOException;
  22 import java.io.InputStreamReader;
  23 import java.io.InterruptedIOException;
  24 import java.io.OutputStreamWriter;
  25 import java.math.BigInteger;
  26 import java.net.ConnectException;
  27 import java.net.InetSocketAddress;
  28 import java.net.NoRouteToHostException;
  29 import java.net.Socket;
  30 import java.net.SocketAddress;
  31 import java.net.SocketTimeoutException;
  32 import java.net.UnknownHostException;
  33 import java.nio.charset.StandardCharsets;
  34 import java.security.GeneralSecurityException;
  35 import java.security.NoSuchAlgorithmException;
  36 import java.security.UnrecoverableKeyException;
  37 import java.security.cert.Certificate;
  38 import java.security.cert.CertificateException;
  39 import java.security.cert.X509Certificate;
  40 import java.util.concurrent.BlockingQueue;
  41 import java.util.concurrent.Future;
  42 import java.util.concurrent.LinkedBlockingQueue;
  43 import java.util.concurrent.ScheduledExecutorService;
  44 import java.util.concurrent.ScheduledFuture;
  45 import java.util.concurrent.TimeUnit;
  46
  47 import javax.net.ssl.KeyManagerFactory;
  48 import javax.net.ssl.SSLContext;
  49 import javax.net.ssl.SSLServerSocket;
  50 import javax.net.ssl.SSLServerSocketFactory;
  51 import javax.net.ssl.SSLSession;
  52 import javax.net.ssl.SSLSocket;
  53 import javax.net.ssl.SSLSocketFactory;
  54 import javax.net.ssl.TrustManager;
  55 import javax.net.ssl.X509TrustManager;
  56
  57 import org.eclipse.jdt.annotation.NonNullByDefault;
  58 import org.eclipse.jdt.annotation.Nullable;
  59 import org.openhab.binding.androidtv.internal.AndroidTVHandler;
  60 import org.openhab.binding.androidtv.internal.AndroidTVTranslationProvider;
  61 import org.openhab.binding.androidtv.internal.utils.AndroidTVPKI;
  62 import org.openhab.core.OpenHAB;
  63 import org.openhab.core.library.types.NextPreviousType;
  64 import org.openhab.core.library.types.OnOffType;
  65 import org.openhab.core.library.types.PercentType;
  66 import org.openhab.core.library.types.PlayPauseType;
  67 import org.openhab.core.library.types.RewindFastforwardType;
  68 import org.openhab.core.library.types.StringType;
  69 import org.openhab.core.thing.ChannelUID;
  70 import org.openhab.core.types.Command;
  71 import org.slf4j.Logger;
  72 import org.slf4j.LoggerFactory;
  73
  74 /**
  75  * The {@link GoogleTVConnectionManager} is responsible for handling connections via the googletv protocol
  76  *
  77  * Significant portions reused from Lutron binding with permission from Bob A.
  78  *
  79  * @author Ben Rosenblum - Initial contribution
  80  */
  81 @NonNullByDefault
  82 public class GoogleTVConnectionManager {
  83     private static final int DEFAULT_RECONNECT_SECONDS = 60;
  84     private static final int DEFAULT_HEARTBEAT_SECONDS = 5;
  85     private static final long KEEPALIVE_TIMEOUT_SECONDS = 30;
  86     private static final String DEFAULT_KEYSTORE_PASSWORD = "secret";
  87     private static final String DEFAULT_MODE = "NORMAL";
  88     private static final String PIN_MODE = "PIN";
  89     private static final int DEFAULT_PORT = 6466;
  90     private static final int PIN_DELAY = 1000;
  91
  92     private final Logger logger = LoggerFactory.getLogger(GoogleTVConnectionManager.class);
  93
  94     private ScheduledExecutorService scheduler;
  95
  96     private final AndroidTVHandler handler;
  97     private GoogleTVConfiguration config;
  98     private final AndroidTVTranslationProvider translationProvider;
  99
 100     private @NonNullByDefault({}) SSLSocketFactory sslSocketFactory;
 101     private @Nullable SSLSocket sslSocket;
 102     private @Nullable BufferedWriter writer;
 103     private @Nullable BufferedReader reader;
 104
 105     private @NonNullByDefault({}) SSLServerSocketFactory sslServerSocketFactory;
 106     private @Nullable Socket shimServerSocket;
 107     private @Nullable BufferedWriter shimWriter;
 108     private @Nullable BufferedReader shimReader;
 109
 110     private @Nullable GoogleTVConnectionManager connectionManager;
 111     private @Nullable GoogleTVConnectionManager childConnectionManager;
 112     private @NonNullByDefault({}) GoogleTVMessageParser messageParser;
 113
 114     private final BlockingQueue<GoogleTVCommand> sendQueue = new LinkedBlockingQueue<>();
 115     private final BlockingQueue<GoogleTVCommand> shimQueue = new LinkedBlockingQueue<>();
 116
 117     private @Nullable Future<?> asyncInitializeTask;
 118     private @Nullable Future<?> shimAsyncInitializeTask;
 119
 120     private @Nullable Thread senderThread;
 121     private @Nullable Thread readerThread;
 122     private @Nullable Thread shimSenderThread;
 123     private @Nullable Thread shimReaderThread;
 124
 125     private @Nullable ScheduledFuture<?> keepAliveJob;
 126     private @Nullable ScheduledFuture<?> keepAliveReconnectJob;
 127     private @Nullable ScheduledFuture<?> connectRetryJob;
 128     private final Object keepAliveReconnectLock = new Object();
 129     private final Object connectionLock = new Object();
 130
 131     private @Nullable ScheduledFuture<?> deviceHealthJob;
 132     private boolean isOnline = true;
 133
 134     private StringBuffer sbReader = new StringBuffer();
 135     private StringBuffer sbShimReader = new StringBuffer();
 136     private String thisMsg = "";
 137
 138     private X509Certificate @Nullable [] shimX509ClientChain;
 139     private Certificate @Nullable [] shimClientChain;
 140     private Certificate @Nullable [] shimServerChain;
 141     private Certificate @Nullable [] shimClientLocalChain;
 142
 143     private boolean disposing = false;
 144     private boolean isLoggedIn = false;
 145     private String statusMessage = "";
 146     private String pinHash = "";
 147     private String shimPinHash = "";
 148
 149     private boolean power = false;
 150     private String volCurr = "00";
 151     private String volMax = "ff";
 152     private boolean volMute = false;
 153     private String audioMode = "";
 154     private String currentApp = "";
 155     private String manufacturer = "";
 156     private String model = "";
 157     private String androidVersion = "";
 158     private String remoteServer = "";
 159     private String remoteServerVersion = "";
 160
 161     private AndroidTVPKI androidtvPKI = new AndroidTVPKI();
 162     private byte[] encryptionKey;
 163
 164     public GoogleTVConnectionManager(AndroidTVHandler handler, GoogleTVConfiguration config) {
 165         messageParser = new GoogleTVMessageParser(this);
 166         this.config = config;
 167         this.handler = handler;
 168         this.translationProvider = handler.getTranslationProvider();
 169         this.connectionManager = this;
 170         this.scheduler = handler.getScheduler();
 171         this.encryptionKey = androidtvPKI.generateEncryptionKey();
 172         initialize();
 173     }
 174
 175     public GoogleTVConnectionManager(AndroidTVHandler handler, GoogleTVConfiguration config,
 176             GoogleTVConnectionManager connectionManager) {
 177         messageParser = new GoogleTVMessageParser(this);
 178         this.config = config;
 179         this.handler = handler;
 180         this.translationProvider = handler.getTranslationProvider();
 181         this.connectionManager = connectionManager;
 182         this.scheduler = handler.getScheduler();
 183         this.encryptionKey = androidtvPKI.generateEncryptionKey();
 184         initialize();
 185     }
 186
 187     public String getThingID() {
 188         return handler.getThingID();
 189     }
 190
 191     public void setManufacturer(String manufacturer) {
 192         this.manufacturer = manufacturer;
 193         handler.setThingProperty("manufacturer", manufacturer);
 194     }
 195
 196     public String getManufacturer() {
 197         return manufacturer;
 198     }
 199
 200     public void setModel(String model) {
 201         this.model = model;
 202         handler.setThingProperty("model", model);
 203     }
 204
 205     public String getModel() {
 206         return model;
 207     }
 208
 209     public void setAndroidVersion(String androidVersion) {
 210         this.androidVersion = androidVersion;
 211         handler.setThingProperty("androidVersion", androidVersion);
 212     }
 213
 214     public String getAndroidVersion() {
 215         return androidVersion;
 216     }
 217
 218     public void setRemoteServer(String remoteServer) {
 219         this.remoteServer = remoteServer;
 220         handler.setThingProperty("remoteServer", remoteServer);
 221     }
 222
 223     public String getRemoteServer() {
 224         return remoteServer;
 225     }
 226
 227     public void setRemoteServerVersion(String remoteServerVersion) {
 228         this.remoteServerVersion = remoteServerVersion;
 229         handler.setThingProperty("remoteServerVersion", remoteServerVersion);
 230     }
 231
 232     public String getRemoteServerVersion() {
 233         return remoteServerVersion;
 234     }
 235
 236     public void setPower(boolean power) {
 237         this.power = power;
 238         logger.debug("{} - Setting power to {}", handler.getThingID(), power);
 239         if (power) {
 240             handler.updateChannelState(CHANNEL_POWER, OnOffType.ON);
 241         } else {
 242             handler.updateChannelState(CHANNEL_POWER, OnOffType.OFF);
 243         }
 244     }
 245
 246     public boolean getPower() {
 247         return power;
 248     }
 249
 250     public void setVolCurr(String volCurr) {
 251         this.volCurr = volCurr;
 252         int max = Integer.parseInt(this.volMax, 16);
 253         int volume = ((Integer.parseInt(volCurr, 16) * 100) / max);
 254         handler.updateChannelState(CHANNEL_VOLUME, new PercentType(volume));
 255     }
 256
 257     public String getVolCurr() {
 258         return volCurr;
 259     }
 260
 261     public void setVolMax(String volMax) {
 262         this.volMax = volMax;
 263     }
 264
 265     public String getVolMax() {
 266         return volMax;
 267     }
 268
 269     public void setVolMute(String volMute) {
 270         if (DELIMITER_00.equals(volMute)) {
 271             this.volMute = false;
 272             handler.updateChannelState(CHANNEL_MUTE, OnOffType.OFF);
 273         } else if (DELIMITER_01.equals(volMute)) {
 274             this.volMute = true;
 275             handler.updateChannelState(CHANNEL_MUTE, OnOffType.ON);
 276         }
 277     }
 278
 279     public boolean getVolMute() {
 280         return volMute;
 281     }
 282
 283     public void setAudioMode(String audioMode) {
 284         this.audioMode = audioMode;
 285     }
 286
 287     public String getAudioMode() {
 288         return audioMode;
 289     }
 290
 291     public void setCurrentApp(String currentApp) {
 292         this.currentApp = currentApp;
 293         handler.updateChannelState(CHANNEL_APP, new StringType(currentApp));
 294     }
 295
 296     public String getStatusMessage() {
 297         return statusMessage;
 298     }
 299
 300     private void setStatus(boolean isLoggedIn) {
 301         if (isLoggedIn) {
 302             setStatus(isLoggedIn, "online.online");
 303         } else {
 304             setStatus(isLoggedIn, "offline.unknown");
 305         }
 306     }
 307
 308     private void setStatus(boolean isLoggedIn, String statusMessage) {
 309         String translatedMessage = translationProvider.getText(statusMessage);
 310         if ((this.isLoggedIn != isLoggedIn) || (!this.statusMessage.equals(translatedMessage))) {
 311             this.isLoggedIn = isLoggedIn;
 312             this.statusMessage = translatedMessage;
 313             handler.checkThingStatus();
 314         }
 315     }
 316
 317     public String getCurrentApp() {
 318         return currentApp;
 319     }
 320
 321     public void setLoggedIn(boolean isLoggedIn) {
 322         if (this.isLoggedIn != isLoggedIn) {
 323             setStatus(isLoggedIn);
 324         }
 325     }
 326
 327     public boolean getLoggedIn() {
 328         return isLoggedIn;
 329     }
 330
 331     private boolean servicePing() {
 332         int timeout = 500;
 333
 334         SocketAddress socketAddress = new InetSocketAddress(config.ipAddress, config.port);
 335         try (Socket socket = new Socket()) {
 336             socket.connect(socketAddress, timeout);
 337             return true;
 338         } catch (ConnectException | SocketTimeoutException | NoRouteToHostException ignored) {
 339             return false;
 340         } catch (IOException ignored) {
 341             // IOException is thrown by automatic close() of the socket.
 342             // This should actually never return a value as we should return true above already
 343             return true;
 344         }
 345     }
 346
 347     private void checkHealth() {
 348         boolean isOnline;
 349         if (!isLoggedIn) {
 350             isOnline = servicePing();
 351         } else {
 352             isOnline = true;
 353         }
 354         logger.debug("{} - Device Health - Online: {} - Logged In: {} - Mode: {}", handler.getThingID(), isOnline,
 355                 isLoggedIn, config.mode);
 356         if (isOnline != this.isOnline) {
 357             this.isOnline = isOnline;
 358             if (isOnline) {
 359                 logger.debug("{} - Device is back online.  Attempting reconnection.", handler.getThingID());
 360                 reconnect();
 361             }
 362         }
 363     }
 364
 365     private void setShimX509ClientChain(X509Certificate @Nullable [] shimX509ClientChain) {
 366         try {
 367             this.shimX509ClientChain = shimX509ClientChain;
 368             logger.trace("Setting shimX509ClientChain {}", config.port);
 369             if (shimX509ClientChain != null) {
 370                 if (logger.isTraceEnabled()) {
 371                     logger.trace("Subject DN: {}", shimX509ClientChain[0].getSubjectX500Principal());
 372                     logger.trace("Issuer DN: {}", shimX509ClientChain[0].getIssuerX500Principal());
 373                     logger.trace("Serial number: {}", shimX509ClientChain[0].getSerialNumber());
 374                     logger.trace("Cert: {}", GoogleTVRequest
 375                             .decodeMessage(GoogleTVUtils.byteArrayToString(shimX509ClientChain[0].getEncoded())));
 376                 }
 377                 androidtvPKI.setCaCert(shimX509ClientChain[0]);
 378                 androidtvPKI.saveKeyStore(config.keystorePassword, this.encryptionKey);
 379
 380             }
 381         } catch (Exception e) {
 382             logger.trace("setShimX509ClientChain Exception", e);
 383         }
 384     }
 385
 386     private void startChildConnectionManager(int port, String mode) {
 387         GoogleTVConfiguration childConfig = new GoogleTVConfiguration();
 388         childConfig.ipAddress = config.ipAddress;
 389         childConfig.port = port;
 390         childConfig.reconnect = config.reconnect;
 391         childConfig.heartbeat = config.heartbeat;
 392         childConfig.keystoreFileName = config.keystoreFileName;
 393         childConfig.keystorePassword = config.keystorePassword;
 394         childConfig.delay = config.delay;
 395         childConfig.shim = config.shim;
 396         childConfig.mode = mode;
 397         logger.debug("{} - startChildConnectionManager parent config: {} {} {}", handler.getThingID(), config.port,
 398                 config.mode, config.shim);
 399         logger.debug("{} - startChildConnectionManager child config: {} {} {}", handler.getThingID(), childConfig.port,
 400                 childConfig.mode, childConfig.shim);
 401         childConnectionManager = new GoogleTVConnectionManager(this.handler, childConfig, this);
 402     }
 403
 404     private TrustManager[] defineNoOpTrustManager() {
 405         return new TrustManager[] { new X509TrustManager() {
 406             @Override
 407             public void checkClientTrusted(final X509Certificate @Nullable [] chain, final @Nullable String authType) {
 408                 logger.debug("Assuming client certificate is valid");
 409                 if (chain != null && logger.isTraceEnabled()) {
 410                     for (int cert = 0; cert < chain.length; cert++) {
 411                         logger.trace("Subject DN: {}", chain[cert].getSubjectX500Principal());
 412                         logger.trace("Issuer DN: {}", chain[cert].getIssuerX500Principal());
 413                         logger.trace("Serial number: {}", chain[cert].getSerialNumber());
 414                     }
 415                 }
 416             }
 417
 418             @Override
 419             public void checkServerTrusted(final X509Certificate @Nullable [] chain, final @Nullable String authType) {
 420                 logger.debug("Assuming server certificate is valid");
 421                 if (chain != null && logger.isTraceEnabled()) {
 422                     for (int cert = 0; cert < chain.length; cert++) {
 423                         logger.trace("Subject DN: {}", chain[cert].getSubjectX500Principal());
 424                         logger.trace("Issuer DN: {}", chain[cert].getIssuerX500Principal());
 425                         logger.trace("Serial number: {}", chain[cert].getSerialNumber());
 426                     }
 427                 }
 428             }
 429
 430             @Override
 431             public X509Certificate @Nullable [] getAcceptedIssuers() {
 432                 X509Certificate[] x509ClientChain = shimX509ClientChain;
 433                 if (x509ClientChain != null && logger.isTraceEnabled()) {
 434                     logger.debug("Returning shimX509ClientChain for getAcceptedIssuers");
 435                     for (int cert = 0; cert < x509ClientChain.length; cert++) {
 436                         logger.trace("Subject DN: {}", x509ClientChain[cert].getSubjectX500Principal());
 437                         logger.trace("Issuer DN: {}", x509ClientChain[cert].getIssuerX500Principal());
 438                         logger.trace("Serial number: {}", x509ClientChain[cert].getSerialNumber());
 439                     }
 440                     return x509ClientChain;
 441                 } else {
 442                     logger.debug("Returning empty certificate for getAcceptedIssuers");
 443                     return new X509Certificate[0];
 444                 }
 445             }
 446         } };
 447     }
 448
 449     private void initialize() {
 450         SSLContext sslContext;
 451
 452         String folderName = OpenHAB.getUserDataFolder() + "/androidtv";
 453         File folder = new File(folderName);
 454
 455         if (!folder.exists()) {
 456             logger.debug("Creating directory {}", folderName);
 457             folder.mkdirs();
 458         }
 459
 460         config.port = (config.port > 0) ? config.port : DEFAULT_PORT;
 461         config.reconnect = (config.reconnect > 0) ? config.reconnect : DEFAULT_RECONNECT_SECONDS;
 462         config.heartbeat = (config.heartbeat > 0) ? config.heartbeat : DEFAULT_HEARTBEAT_SECONDS;
 463         config.delay = (config.delay < 0) ? 0 : config.delay;
 464         config.shim = (config.shim) ? true : false;
 465         config.shimNewKeys = (config.shimNewKeys) ? true : false;
 466         config.mode = (!config.mode.equals("")) ? config.mode : DEFAULT_MODE;
 467
 468         config.keystoreFileName = (!config.keystoreFileName.equals("")) ? config.keystoreFileName
 469                 : folderName + "/googletv." + ((config.shim) ? "shim." : "") + handler.getThing().getUID().getId()
 470                         + ".keystore";
 471         config.keystorePassword = (!config.keystorePassword.equals("")) ? config.keystorePassword
 472                 : DEFAULT_KEYSTORE_PASSWORD;
 473
 474         androidtvPKI.setKeystoreFileName(config.keystoreFileName);
 475         androidtvPKI.setAlias("nvidia");
 476
 477         if (config.mode.equals(DEFAULT_MODE)) {
 478             deviceHealthJob = scheduler.scheduleWithFixedDelay(this::checkHealth, config.heartbeat, config.heartbeat,
 479                     TimeUnit.SECONDS);
 480         }
 481
 482         try {
 483             File keystoreFile = new File(config.keystoreFileName);
 484
 485             if (!keystoreFile.exists() || config.shimNewKeys) {
 486                 androidtvPKI.generateNewKeyPair(encryptionKey);
 487                 androidtvPKI.saveKeyStore(config.keystorePassword, this.encryptionKey);
 488             } else {
 489                 androidtvPKI.loadFromKeyStore(config.keystorePassword, this.encryptionKey);
 490             }
 491
 492             logger.trace("{} - Initializing SSL Context", handler.getThingID());
 493             KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
 494             kmf.init(androidtvPKI.getKeyStore(config.keystorePassword, this.encryptionKey),
 495                     config.keystorePassword.toCharArray());
 496
 497             TrustManager[] trustManagers = defineNoOpTrustManager();
 498
 499             sslContext = SSLContext.getInstance("TLS");
 500             sslContext.init(kmf.getKeyManagers(), trustManagers, null);
 501
 502             sslSocketFactory = sslContext.getSocketFactory();
 503             if (!config.shim) {
 504                 asyncInitializeTask = scheduler.submit(this::connect);
 505             } else {
 506                 shimAsyncInitializeTask = scheduler.submit(this::shimInitialize);
 507             }
 508         } catch (NoSuchAlgorithmException | IOException e) {
 509             setStatus(false, "offline.error-initalizing-keystore");
 510             logger.debug("Error initializing keystore", e);
 511         } catch (UnrecoverableKeyException e) {
 512             setStatus(false, "offline.key-unrecoverable-with-supplied-password");
 513         } catch (GeneralSecurityException e) {
 514             logger.debug("General security exception", e);
 515         } catch (Exception e) {
 516             logger.debug("General exception", e);
 517         }
 518     }
 519
 520     public void connect() {
 521         synchronized (connectionLock) {
 522             if (isOnline || config.mode.equals(PIN_MODE)) {
 523                 try {
 524                     logger.debug("{} - Opening GoogleTV SSL connection to {}:{} {}", handler.getThingID(),
 525                             config.ipAddress, config.port, config.mode);
 526                     SSLSocket sslSocket = (SSLSocket) sslSocketFactory.createSocket(config.ipAddress, config.port);
 527                     sslSocket.startHandshake();
 528                     this.shimServerChain = ((SSLSocket) sslSocket).getSession().getPeerCertificates();
 529                     writer = new BufferedWriter(
 530                             new OutputStreamWriter(sslSocket.getOutputStream(), StandardCharsets.ISO_8859_1));
 531                     reader = new BufferedReader(
 532                             new InputStreamReader(sslSocket.getInputStream(), StandardCharsets.ISO_8859_1));
 533                     this.sslSocket = sslSocket;
 534                     this.sendQueue.clear();
 535                     logger.debug("{} - Connection to {}:{} {} successful", handler.getThingID(), config.ipAddress,
 536                             config.port, config.mode);
 537                 } catch (UnknownHostException e) {
 538                     setStatus(false, "offline.unknown-host");
 539                     logger.debug("{} - Unknown host {}", handler.getThingID(), config.ipAddress);
 540                     return;
 541                 } catch (IllegalArgumentException e) {
 542                     // port out of valid range
 543                     setStatus(false, "offline.invalid-port-number");
 544                     logger.debug("{} - Invalid port number {}:{}", handler.getThingID(), config.ipAddress, config.port);
 545                     return;
 546                 } catch (InterruptedIOException e) {
 547                     logger.debug("{} - Interrupted while establishing GoogleTV connection", handler.getThingID());
 548                     Thread.currentThread().interrupt();
 549                     return;
 550                 } catch (IOException e) {
 551                     String message = e.getMessage();
 552                     if ((message != null) && (message.contains("certificate_unknown"))
 553                             && (!config.mode.equals(PIN_MODE)) && (!config.shim)) {
 554                         setStatus(false, "offline.pin-process-incomplete");
 555                         logger.debug("{} - GoogleTV PIN Process Incomplete", handler.getThingID());
 556                         reconnectTaskCancel(true);
 557                         startChildConnectionManager(this.config.port + 1, PIN_MODE);
 558                     } else if ((message != null) && (message.contains("certificate_unknown")) && (config.shim)) {
 559                         logger.debug("Shim cert_unknown I/O error while connecting: {}", e.getMessage());
 560                         Socket shimServerSocket = this.shimServerSocket;
 561                         if (shimServerSocket != null) {
 562                             try {
 563                                 shimServerSocket.close();
 564                             } catch (IOException ex) {
 565                                 logger.debug("Error closing GoogleTV SSL socket: {}", ex.getMessage());
 566                             }
 567                             this.shimServerSocket = null;
 568                         }
 569                     } else {
 570                         setStatus(false, "offline.error-opening-ssl-connection-check-log");
 571                         logger.info("{} - Error opening SSL connection to {}:{} {}", handler.getThingID(),
 572                                 config.ipAddress, config.port, e.getMessage());
 573                         disconnect(false);
 574                         scheduleConnectRetry(config.reconnect); // Possibly a temporary problem. Try again later.
 575                     }
 576                     return;
 577                 }
 578
 579                 setStatus(false, "offline.initializing");
 580
 581                 logger.trace("{} - Starting Reader Thread for {}:{}", handler.getThingID(), config.ipAddress,
 582                         config.port);
 583
 584                 Thread readerThread = new Thread(this::readerThreadJob, "GoogleTV reader " + handler.getThingID());
 585                 readerThread.setDaemon(true);
 586                 readerThread.start();
 587                 this.readerThread = readerThread;
 588
 589                 logger.trace("{} - Starting Sender Thread for {}:{}", handler.getThingID(), config.ipAddress,
 590                         config.port);
 591
 592                 Thread senderThread = new Thread(this::senderThreadJob, "GoogleTV sender " + handler.getThingID());
 593                 senderThread.setDaemon(true);
 594                 senderThread.start();
 595                 this.senderThread = senderThread;
 596
 597                 logger.trace("{} - Checking for PIN MODE for {}:{} {}", handler.getThingID(), config.ipAddress,
 598                         config.port, config.mode);
 599
 600                 if (config.mode.equals(PIN_MODE)) {
 601                     logger.trace("{} - Sending PIN Login to {}:{}", handler.getThingID(), config.ipAddress,
 602                             config.port);
 603                     // Send app name and device name
 604                     sendCommand(new GoogleTVCommand(GoogleTVRequest.encodeMessage(GoogleTVRequest.loginRequest(1))));
 605                     // Unknown but required
 606                     sendCommand(new GoogleTVCommand(GoogleTVRequest.encodeMessage(GoogleTVRequest.loginRequest(2))));
 607                     // Don't send pin request yet, let user send REQUEST via PINCODE channel
 608                 } else {
 609                     logger.trace("{} - Not PIN Mode {}:{} {}", handler.getThingID(), config.ipAddress, config.port,
 610                             config.mode);
 611                 }
 612             } else {
 613                 scheduleConnectRetry(config.reconnect); // Possibly a temporary problem. Try again later.
 614             }
 615         }
 616     }
 617
 618     public void shimInitialize() {
 619         synchronized (connectionLock) {
 620             SSLContext sslContext;
 621
 622             try {
 623                 KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
 624                 kmf.init(androidtvPKI.getKeyStore(config.keystorePassword, this.encryptionKey),
 625                         config.keystorePassword.toCharArray());
 626
 627                 TrustManager[] trustManagers = defineNoOpTrustManager();
 628
 629                 sslContext = SSLContext.getInstance("TLS");
 630                 sslContext.init(kmf.getKeyManagers(), trustManagers, null);
 631                 this.sslServerSocketFactory = sslContext.getServerSocketFactory();
 632
 633                 logger.trace("Opening GoogleTV shim on port {}", config.port);
 634                 SSLServerSocket sslServerSocket = (SSLServerSocket) this.sslServerSocketFactory
 635                         .createServerSocket(config.port);
 636                 if (this.config.mode.equals(DEFAULT_MODE)) {
 637                     sslServerSocket.setNeedClientAuth(true);
 638                 } else {
 639                     sslServerSocket.setWantClientAuth(true);
 640                 }
 641
 642                 while (true) {
 643                     logger.trace("Waiting for shim connection... {}", config.port);
 644                     if (this.config.mode.equals(DEFAULT_MODE) && (childConnectionManager == null)) {
 645                         logger.trace("Starting childConnectionManager {}", config.port);
 646                         startChildConnectionManager(this.config.port + 1, PIN_MODE);
 647                     }
 648                     SSLSocket serverSocket = (SSLSocket) sslServerSocket.accept();
 649                     logger.trace("shimInitialize accepted {}", config.port);
 650                     try {
 651                         serverSocket.startHandshake();
 652                         logger.trace("shimInitialize startHandshake {}", config.port);
 653                         connect();
 654                         logger.trace("shimInitialize connected {}", config.port);
 655
 656                         SSLSession session = serverSocket.getSession();
 657                         Certificate[] cchain2 = session.getPeerCertificates();
 658                         this.shimClientChain = cchain2;
 659                         Certificate[] cchain3 = session.getLocalCertificates();
 660                         this.shimClientLocalChain = cchain3;
 661
 662                         X509Certificate[] shimX509ClientChain = new X509Certificate[cchain2.length];
 663
 664                         for (int i = 0; i < cchain2.length; i++) {
 665                             logger.trace("Connection from: {}",
 666                                     ((X509Certificate) cchain2[i]).getSubjectX500Principal());
 667                             shimX509ClientChain[i] = ((X509Certificate) cchain2[i]);
 668                             if (this.config.mode.equals(DEFAULT_MODE) && logger.isTraceEnabled()) {
 669                                 logger.trace("Cert: {}", GoogleTVRequest.decodeMessage(
 670                                         GoogleTVUtils.byteArrayToString(((X509Certificate) cchain2[i]).getEncoded())));
 671                             }
 672                         }
 673
 674                         if (this.config.mode.equals(PIN_MODE)) {
 675                             this.shimX509ClientChain = shimX509ClientChain;
 676                             GoogleTVConnectionManager connectionManager = this.connectionManager;
 677                             if (connectionManager != null) {
 678                                 connectionManager.setShimX509ClientChain(shimX509ClientChain);
 679                             }
 680                         }
 681
 682                         if (cchain3 != null) {
 683                             for (int i = 0; i < cchain3.length; i++) {
 684                                 logger.trace("Connection from: {}",
 685                                         ((X509Certificate) cchain3[i]).getSubjectX500Principal());
 686                             }
 687                         }
 688
 689                         logger.trace("Peer host is {}", session.getPeerHost());
 690                         logger.trace("Cipher is {}", session.getCipherSuite());
 691                         logger.trace("Protocol is {}", session.getProtocol());
 692                         logger.trace("ID is {}", new BigInteger(session.getId()));
 693                         logger.trace("Session created in {}", session.getCreationTime());
 694                         logger.trace("Session accessed in {}", session.getLastAccessedTime());
 695
 696                         shimWriter = new BufferedWriter(
 697                                 new OutputStreamWriter(serverSocket.getOutputStream(), StandardCharsets.ISO_8859_1));
 698                         shimReader = new BufferedReader(
 699                                 new InputStreamReader(serverSocket.getInputStream(), StandardCharsets.ISO_8859_1));
 700                         this.shimServerSocket = serverSocket;
 701                         this.shimQueue.clear();
 702
 703                         Thread readerThread = new Thread(this::shimReaderThreadJob, "GoogleTV shim reader");
 704                         readerThread.setDaemon(true);
 705                         readerThread.start();
 706                         this.shimReaderThread = readerThread;
 707
 708                         Thread senderThread = new Thread(this::shimSenderThreadJob, "GoogleTV shim sender");
 709                         senderThread.setDaemon(true);
 710                         senderThread.start();
 711                         this.shimSenderThread = senderThread;
 712                     } catch (Exception e) {
 713                         logger.trace("Shim initalization exception {}", config.port);
 714                         logger.trace("Shim initalization exception", e);
 715                     }
 716                 }
 717             } catch (Exception e) {
 718                 logger.trace("Shim initalization exception {}", config.port);
 719                 logger.trace("Shim initalization exception", e);
 720
 721                 return;
 722             }
 723         }
 724     }
 725
 726     private void scheduleConnectRetry(long waitSeconds) {
 727         logger.trace("{} - Scheduling GoogleTV connection retry in {} seconds", handler.getThingID(), waitSeconds);
 728         connectRetryJob = scheduler.schedule(this::connect, waitSeconds, TimeUnit.SECONDS);
 729     }
 730
 731     /**
 732      * Disconnect from bridge, cancel retry and keepalive jobs, stop reader and writer threads, and
 733      * clean up.
 734      *
 735      * @param interruptAll Set if reconnect task should be interrupted if running. Should be false when calling from
 736      *            connect or reconnect, and true when calling from dispose.
 737      */
 738     private void disconnect(boolean interruptAll) {
 739         synchronized (connectionLock) {
 740             logger.debug("{} - Disconnecting GoogleTV", handler.getThingID());
 741
 742             this.isLoggedIn = false;
 743
 744             ScheduledFuture<?> connectRetryJob = this.connectRetryJob;
 745             if (connectRetryJob != null) {
 746                 connectRetryJob.cancel(true);
 747             }
 748             ScheduledFuture<?> keepAliveJob = this.keepAliveJob;
 749             if (keepAliveJob != null) {
 750                 keepAliveJob.cancel(true);
 751             }
 752             reconnectTaskCancel(interruptAll); // May be called from keepAliveReconnectJob thread
 753
 754             Thread senderThread = this.senderThread;
 755             if (senderThread != null && senderThread.isAlive()) {
 756                 senderThread.interrupt();
 757             }
 758
 759             Thread readerThread = this.readerThread;
 760             if (readerThread != null && readerThread.isAlive()) {
 761                 readerThread.interrupt();
 762             }
 763
 764             Thread shimSenderThread = this.shimSenderThread;
 765             if (shimSenderThread != null && shimSenderThread.isAlive()) {
 766                 shimSenderThread.interrupt();
 767             }
 768
 769             Thread shimReaderThread = this.shimReaderThread;
 770             if (shimReaderThread != null && shimReaderThread.isAlive()) {
 771                 shimReaderThread.interrupt();
 772             }
 773
 774             SSLSocket sslSocket = this.sslSocket;
 775             if (sslSocket != null) {
 776                 try {
 777                     sslSocket.close();
 778                 } catch (IOException e) {
 779                     logger.debug("Error closing GoogleTV SSL socket: {}", e.getMessage());
 780                 }
 781                 this.sslSocket = null;
 782             }
 783             BufferedReader reader = this.reader;
 784             if (reader != null) {
 785                 try {
 786                     reader.close();
 787                 } catch (IOException e) {
 788                     logger.debug("Error closing reader: {}", e.getMessage());
 789                 }
 790             }
 791             BufferedWriter writer = this.writer;
 792             if (writer != null) {
 793                 try {
 794                     writer.close();
 795                 } catch (IOException e) {
 796                     logger.debug("Error closing writer: {}", e.getMessage());
 797                 }
 798             }
 799
 800             Socket shimServerSocket = this.shimServerSocket;
 801             if (shimServerSocket != null) {
 802                 try {
 803                     shimServerSocket.close();
 804                 } catch (IOException e) {
 805                     logger.debug("Error closing GoogleTV SSL socket: {}", e.getMessage());
 806                 }
 807                 this.shimServerSocket = null;
 808             }
 809             BufferedReader shimReader = this.shimReader;
 810             if (shimReader != null) {
 811                 try {
 812                     shimReader.close();
 813                 } catch (IOException e) {
 814                     logger.debug("Error closing shimReader: {}", e.getMessage());
 815                 }
 816             }
 817             BufferedWriter shimWriter = this.shimWriter;
 818             if (shimWriter != null) {
 819                 try {
 820                     shimWriter.close();
 821                 } catch (IOException e) {
 822                     logger.debug("Error closing shimWriter: {}", e.getMessage());
 823                 }
 824             }
 825         }
 826     }
 827
 828     private void reconnect() {
 829         synchronized (connectionLock) {
 830             if (!this.disposing) {
 831                 logger.debug("{} - Attempting to reconnect to the GoogleTV", handler.getThingID());
 832                 setStatus(false, "offline.reconnecting");
 833                 disconnect(false);
 834                 connect();
 835             }
 836         }
 837     }
 838
 839     /**
 840      * Method executed by the message sender thread (senderThread)
 841      */
 842     private void senderThreadJob() {
 843         logger.debug("{} - Command sender thread started {}", handler.getThingID(), config.port);
 844         try {
 845             while (!Thread.currentThread().isInterrupted() && writer != null) {
 846                 GoogleTVCommand command = sendQueue.take();
 847
 848                 try {
 849                     BufferedWriter writer = this.writer;
 850                     if (writer != null) {
 851                         logger.trace("{} - Raw GoogleTV command decodes as: {}", handler.getThingID(),
 852                                 GoogleTVRequest.decodeMessage(command.toString()));
 853                         writer.write(command.toString());
 854                         writer.flush();
 855                     }
 856                 } catch (InterruptedIOException e) {
 857                     logger.debug("Interrupted while sending to GoogleTV");
 858                     setStatus(false, "offline.interrupted");
 859                     break; // exit loop and terminate thread
 860                 } catch (IOException e) {
 861                     logger.warn("{} - Communication error, will try to reconnect GoogleTV. Error: {}",
 862                             handler.getThingID(), e.getMessage());
 863                     setStatus(false, "offline.communication-error-will-try-to-reconnect");
 864                     sendQueue.add(command); // Requeue command
 865                     this.isLoggedIn = false;
 866                     reconnect();
 867                     break; // reconnect() will start a new thread; terminate this one
 868                 }
 869                 if (config.delay > 0) {
 870                     Thread.sleep(config.delay); // introduce delay to throttle send rate
 871                 }
 872             }
 873         } catch (InterruptedException e) {
 874             Thread.currentThread().interrupt();
 875         } finally {
 876             logger.debug("{} - Command sender thread exiting {}", handler.getThingID(), config.port);
 877         }
 878     }
 879
 880     private void shimSenderThreadJob() {
 881         logger.debug("Shim sender thread started");
 882         try {
 883             while (!Thread.currentThread().isInterrupted() && shimWriter != null) {
 884                 GoogleTVCommand command = shimQueue.take();
 885
 886                 try {
 887                     BufferedWriter writer = this.shimWriter;
 888                     if (writer != null) {
 889                         logger.trace("Shim received from google: {}",
 890                                 GoogleTVRequest.decodeMessage(command.toString()));
 891                         writer.write(command.toString());
 892                         writer.flush();
 893                     }
 894                 } catch (InterruptedIOException e) {
 895                     logger.debug("Shim interrupted while sending.");
 896                     break; // exit loop and terminate thread
 897                 } catch (IOException e) {
 898                     logger.warn("Shim communication error. Error: {}", e.getMessage());
 899                     break; // reconnect() will start a new thread; terminate this one
 900                 }
 901             }
 902         } catch (InterruptedException e) {
 903             Thread.currentThread().interrupt();
 904         } finally {
 905             logger.debug("Command sender thread exiting");
 906         }
 907     }
 908
 909     /**
 910      * Method executed by the message reader thread (readerThread)
 911      */
 912     private void readerThreadJob() {
 913         logger.debug("{} - Message reader thread started {}", handler.getThingID(), config.port);
 914         try {
 915             BufferedReader reader = this.reader;
 916             int length = 0;
 917             int current = 0;
 918             while (!Thread.interrupted() && reader != null) {
 919                 thisMsg = GoogleTVRequest.fixMessage(Integer.toHexString(reader.read()));
 920                 if (HARD_DROP.equals(thisMsg)) {
 921                     // Google has crashed the connection. Disconnect hard.
 922                     logger.debug("{} - readerThreadJob received ffffffff.  Disconnecting hard.", handler.getThingID());
 923                     this.isLoggedIn = false;
 924                     reconnect();
 925                     break;
 926                 }
 927                 if (length == 0) {
 928                     length = Integer.parseInt(thisMsg.toString(), 16);
 929                     logger.trace("{} - readerThreadJob message length {}", handler.getThingID(), length);
 930                     current = 0;
 931                     sbReader = new StringBuffer();
 932                     sbReader.append(thisMsg.toString());
 933                 } else {
 934                     sbReader.append(thisMsg.toString());
 935                     current += 1;
 936                 }
 937
 938                 if ((length > 0) && (current == length)) {
 939                     logger.trace("{} - GoogleTV Message: {} {}", handler.getThingID(), length, sbReader.toString());
 940                     messageParser.handleMessage(sbReader.toString());
 941                     if (config.shim) {
 942                         String thisCommand = interceptMessages(sbReader.toString());
 943                         shimQueue.add(new GoogleTVCommand(GoogleTVRequest.encodeMessage(thisCommand)));
 944                     }
 945                     length = 0;
 946                 }
 947             }
 948         } catch (InterruptedIOException e) {
 949             logger.debug("Interrupted while reading");
 950             setStatus(false, "offline.interrupted");
 951         } catch (IOException e) {
 952             String message = e.getMessage();
 953             if ((message != null) && (message.contains("certificate_unknown")) && (!config.mode.equals(PIN_MODE))
 954                     && (!config.shim)) {
 955                 setStatus(false, "offline.pin-process-incomplete");
 956                 logger.debug("{} - GoogleTV PIN Process Incomplete", handler.getThingID());
 957                 reconnectTaskCancel(true);
 958                 startChildConnectionManager(this.config.port + 1, PIN_MODE);
 959             } else if ((message != null) && (message.contains("certificate_unknown")) && (config.shim)) {
 960                 logger.debug("Shim cert_unknown I/O error while reading from stream: {}", e.getMessage());
 961                 Socket shimServerSocket = this.shimServerSocket;
 962                 if (shimServerSocket != null) {
 963                     try {
 964                         shimServerSocket.close();
 965                     } catch (IOException ex) {
 966                         logger.debug("Error closing GoogleTV SSL socket: {}", ex.getMessage());
 967                     }
 968                     this.shimServerSocket = null;
 969                 }
 970             } else {
 971                 logger.debug("I/O error while reading from stream: {}", e.getMessage());
 972                 setStatus(false, "offline.io-error");
 973             }
 974         } catch (RuntimeException e) {
 975             logger.warn("Runtime exception in reader thread", e);
 976             setStatus(false, "offline.runtime-exception");
 977         } finally {
 978             logger.debug("{} - Message reader thread exiting {}", handler.getThingID(), config.port);
 979         }
 980     }
 981
 982     private String interceptMessages(String message) {
 983         if (message.startsWith("080210c801c202", 2)) {
 984             // intercept PIN hash and replace with valid shim hash
 985             int length = this.pinHash.length() / 2;
 986             String len1 = GoogleTVRequest.fixMessage(Integer.toHexString(length + 2));
 987             String len2 = GoogleTVRequest.fixMessage(Integer.toHexString(length));
 988             String reply = "080210c801c202" + len1 + "0a" + len2 + this.pinHash;
 989             String replyLength = GoogleTVRequest.fixMessage(Integer.toHexString(reply.length() / 2));
 990             String finalReply = replyLength + reply;
 991             logger.trace("Message Intercepted: {}", message);
 992             logger.trace("Message chagnged to: {}", finalReply);
 993             return finalReply;
 994         } else if (message.startsWith("080210c801ca02", 2)) {
 995             // intercept PIN hash and replace with valid shim hash
 996             int length = this.shimPinHash.length() / 2;
 997             String len1 = GoogleTVRequest.fixMessage(Integer.toHexString(length + 2));
 998             String len2 = GoogleTVRequest.fixMessage(Integer.toHexString(length));
 999             String reply = "080210c801ca02" + len1 + "0a" + len2 + this.shimPinHash;
1000             String replyLength = GoogleTVRequest.fixMessage(Integer.toHexString(reply.length() / 2));
1001             String finalReply = replyLength + reply;
1002             logger.trace("Message Intercepted: {}", message);
1003             logger.trace("Message chagnged to: {}", finalReply);
1004             return finalReply;
1005         } else {
1006             // don't intercept message
1007             return message;
1008         }
1009     }
1010
1011     private void shimReaderThreadJob() {
1012         logger.debug("Shim reader thread started {}", config.port);
1013         try {
1014             BufferedReader reader = this.shimReader;
1015             String thisShimMsg = "";
1016             int length = 0;
1017             int current = 0;
1018             while (!Thread.interrupted() && reader != null) {
1019                 thisShimMsg = GoogleTVRequest.fixMessage(Integer.toHexString(reader.read()));
1020                 if (HARD_DROP.equals(thisShimMsg)) {
1021                     // Google has crashed the connection. Disconnect hard.
1022                     disconnect(false);
1023                     break;
1024                 }
1025                 if (length == 0) {
1026                     length = Integer.parseInt(thisShimMsg.toString(), 16);
1027                     logger.trace("shimReaderThreadJob message length {}", length);
1028                     current = 0;
1029                     sbShimReader = new StringBuffer();
1030                     sbShimReader.append(thisShimMsg.toString());
1031                 } else {
1032                     sbShimReader.append(thisShimMsg.toString());
1033                     current += 1;
1034                 }
1035                 if ((length > 0) && (current == length)) {
1036                     logger.trace("Shim GoogleTV Message: {} {}", length, sbShimReader.toString());
1037                     String thisCommand = interceptMessages(sbShimReader.toString());
1038                     sendQueue.add(new GoogleTVCommand(GoogleTVRequest.encodeMessage(thisCommand)));
1039                     length = 0;
1040                 }
1041             }
1042         } catch (InterruptedIOException e) {
1043             logger.debug("Interrupted while reading");
1044             setStatus(false, "offline.interrupted");
1045         } catch (IOException e) {
1046             logger.debug("I/O error while reading from stream: {}", e.getMessage());
1047             setStatus(false, "offline.io-error");
1048         } catch (RuntimeException e) {
1049             logger.warn("Runtime exception in reader thread", e);
1050             setStatus(false, "offline.runtime-exception");
1051         } finally {
1052             logger.debug("Shim message reader thread exiting {}", config.port);
1053         }
1054     }
1055
1056     public void sendKeepAlive(String request) {
1057         String keepalive = GoogleTVRequest.encodeMessage(GoogleTVRequest.keepAlive(request));
1058         logger.debug("{} - Sending GoogleTV keepalive - request {} - response {}", handler.getThingID(), request,
1059                 GoogleTVRequest.decodeMessage(keepalive));
1060         sendCommand(new GoogleTVCommand(keepalive));
1061         reconnectTaskSchedule();
1062     }
1063
1064     /**
1065      * Schedules the reconnect task keepAliveReconnectJob to execute in KEEPALIVE_TIMEOUT_SECONDS. This should
1066      * be
1067      * cancelled by calling reconnectTaskCancel() if a valid response is received from the bridge.
1068      */
1069     private void reconnectTaskSchedule() {
1070         synchronized (keepAliveReconnectLock) {
1071             logger.trace("{} - Scheduling Reconnect Job for {}", handler.getThingID(), KEEPALIVE_TIMEOUT_SECONDS);
1072             keepAliveReconnectJob = scheduler.schedule(this::keepAliveTimeoutExpired, KEEPALIVE_TIMEOUT_SECONDS,
1073                     TimeUnit.SECONDS);
1074         }
1075     }
1076
1077     /**
1078      * Cancels the reconnect task keepAliveReconnectJob.
1079      */
1080     private void reconnectTaskCancel(boolean interrupt) {
1081         synchronized (keepAliveReconnectLock) {
1082             ScheduledFuture<?> keepAliveReconnectJob = this.keepAliveReconnectJob;
1083             if (keepAliveReconnectJob != null) {
1084                 logger.trace("{} - Canceling GoogleTV scheduled reconnect job.", handler.getThingID());
1085                 keepAliveReconnectJob.cancel(interrupt);
1086                 this.keepAliveReconnectJob = null;
1087             }
1088         }
1089     }
1090
1091     /**
1092      * Executed by keepAliveReconnectJob if it is not cancelled by the LEAP message parser calling
1093      * validMessageReceived() which in turn calls reconnectTaskCancel().
1094      */
1095     private void keepAliveTimeoutExpired() {
1096         logger.debug("{} - GoogleTV keepalive response timeout expired. Initiating reconnect.", handler.getThingID());
1097         reconnect();
1098     }
1099
1100     public void validMessageReceived() {
1101         reconnectTaskCancel(true); // Got a good message, so cancel reconnect task.
1102     }
1103
1104     public void finishPinProcess() {
1105         GoogleTVConnectionManager connectionManager = this.connectionManager;
1106         GoogleTVConnectionManager childConnectionManager = this.childConnectionManager;
1107         if ((connectionManager != null) && (config.mode.equals(PIN_MODE)) && (!config.shim)) {
1108             disconnect(false);
1109             connectionManager.finishPinProcess();
1110         } else if ((childConnectionManager != null) && (config.mode.equals(DEFAULT_MODE)) && (!config.shim)) {
1111             childConnectionManager.dispose();
1112             reconnect();
1113         }
1114     }
1115
1116     public void sendCommand(GoogleTVCommand command) {
1117         if ((!config.shim) && (!command.isEmpty())) {
1118             int length = command.toString().length();
1119             String hexLength = GoogleTVRequest.encodeMessage(GoogleTVRequest.fixMessage(Integer.toHexString(length)));
1120             String message = hexLength + command.toString();
1121             GoogleTVCommand lenCommand = new GoogleTVCommand(message);
1122             sendQueue.add(lenCommand);
1123         }
1124     }
1125
1126     public void sendShim(GoogleTVCommand command) {
1127         if (!command.isEmpty()) {
1128             shimQueue.add(command);
1129         }
1130     }
1131
1132     public void handleCommand(ChannelUID channelUID, Command command) {
1133         logger.debug("{} - Command received: {}", handler.getThingID(), channelUID.getId());
1134
1135         if (CHANNEL_KEYPRESS.equals(channelUID.getId())) {
1136             if (command instanceof StringType) {
1137                 if (command.toString().length() == 5) {
1138                     // Account for KEY_(ASCII Character)
1139                     String keyPress = "aa01071a0512031a01"
1140                             + GoogleTVRequest.decodeMessage(new String("" + command.toString().charAt(4)));
1141                     sendCommand(new GoogleTVCommand(GoogleTVRequest.encodeMessage(keyPress)));
1142                     return;
1143                 }
1144
1145                 String message = "";
1146                 String suffix = "";
1147                 String shortCommand = command.toString();
1148                 if (command.toString().endsWith("_PRESS")) {
1149                     suffix = "1001";
1150                     shortCommand = "KEY_" + command.toString().split("_")[1];
1151                 } else if (command.toString().endsWith("_RELEASE")) {
1152                     suffix = "1002";
1153                     shortCommand = "KEY_" + command.toString().split("_")[1];
1154                 } else {
1155                     suffix = "1003";
1156                 }
1157
1158                 switch (shortCommand) {
1159                     case "KEY_UP":
1160                         message = "52040813" + suffix;
1161                         break;
1162                     case "KEY_DOWN":
1163                         message = "52040814" + suffix;
1164                         break;
1165                     case "KEY_RIGHT":
1166                         message = "52040816" + suffix;
1167                         break;
1168                     case "KEY_LEFT":
1169                         message = "52040815" + suffix;
1170                         break;
1171                     case "KEY_ENTER":
1172                         message = "52040817" + suffix;
1173                         break;
1174                     case "KEY_HOME":
1175                         message = "52040803" + suffix;
1176                         break;
1177                     case "KEY_BACK":
1178                         message = "52040804" + suffix;
1179                         break;
1180                     case "KEY_MENU":
1181                         message = "52040852" + suffix;
1182                         break;
1183                     case "KEY_PLAY":
1184                         message = "5204087E" + suffix;
1185                         break;
1186                     case "KEY_PAUSE":
1187                         message = "5204087F" + suffix;
1188                         break;
1189                     case "KEY_PLAYPAUSE":
1190                         message = "52040855" + suffix;
1191                         break;
1192                     case "KEY_STOP":
1193                         message = "52040856" + suffix;
1194                         break;
1195                     case "KEY_NEXT":
1196                         message = "52040857" + suffix;
1197                         break;
1198                     case "KEY_PREVIOUS":
1199                         message = "52040858" + suffix;
1200                         break;
1201                     case "KEY_REWIND":
1202                         message = "52040859" + suffix;
1203                         break;
1204                     case "KEY_FORWARD":
1205                         message = "5204085A" + suffix;
1206                         break;
1207                     case "KEY_POWER":
1208                         message = "5204081a" + suffix;
1209                         break;
1210                     case "KEY_VOLUP":
1211                         message = "52040818" + suffix;
1212                         break;
1213                     case "KEY_VOLDOWN":
1214                         message = "52040819" + suffix;
1215                         break;
1216                     case "KEY_MUTE":
1217                         message = "5204085b" + suffix;
1218                         break;
1219                     default:
1220                         logger.debug("Unknown Key {}", command);
1221                         return;
1222                 }
1223                 sendCommand(new GoogleTVCommand(GoogleTVRequest.encodeMessage(message)));
1224             }
1225         } else if (CHANNEL_KEYCODE.equals(channelUID.getId())) {
1226             if (command instanceof StringType) {
1227                 String shortCommand = command.toString().split("_")[0];
1228                 int commandInt = Integer.parseInt(shortCommand, 10);
1229                 String suffix = "";
1230                 if (commandInt > 255) {
1231                     suffix = "02";
1232                     commandInt -= 256;
1233                 } else if (commandInt > 127) {
1234                     suffix = "01";
1235                 }
1236
1237                 String key = Integer.toHexString(commandInt) + suffix;
1238
1239                 if ((key.length() % 2) == 1) {
1240                     key = "0" + key;
1241                 }
1242
1243                 key = "08" + key;
1244
1245                 if (command.toString().endsWith("_PRESS")) {
1246                     key = key + "1001";
1247                 } else if (command.toString().endsWith("_RELEASE")) {
1248                     key = key + "1002";
1249                 } else {
1250                     key = key + "1003";
1251                 }
1252
1253                 String length = "0" + (key.length() / 2);
1254                 String message = "52" + length + key;
1255
1256                 logger.trace("Sending KEYCODE {} as {}", key, message);
1257                 sendCommand(new GoogleTVCommand(GoogleTVRequest.encodeMessage(message)));
1258             }
1259
1260         } else if (CHANNEL_PINCODE.equals(channelUID.getId())) {
1261             if (command instanceof StringType) {
1262                 try {
1263                     Certificate[] shimClientChain = this.shimClientChain;
1264                     Certificate[] shimServerChain = this.shimServerChain;
1265                     Certificate[] shimClientLocalChain = this.shimClientLocalChain;
1266                     if (config.mode.equals(DEFAULT_MODE)) {
1267                         if ((!isLoggedIn) && (command.toString().equals("REQUEST"))
1268                                 && (childConnectionManager == null)) {
1269                             setStatus(false, "offline.user-forced-pin-process");
1270                             logger.debug("{} - User Forced PIN Process", handler.getThingID());
1271                             disconnect(true);
1272                             startChildConnectionManager(config.port + 1, PIN_MODE);
1273                             try {
1274                                 Thread.sleep(PIN_DELAY);
1275                             } catch (InterruptedException e) {
1276                                 logger.trace("InterruptedException", e);
1277                             }
1278                         }
1279                         GoogleTVConnectionManager childConnectionManager = this.childConnectionManager;
1280                         if (childConnectionManager != null) {
1281                             childConnectionManager.handleCommand(channelUID, command);
1282                         } else {
1283                             logger.debug("{} - Child Connection Manager unavailable.", handler.getThingID());
1284                         }
1285                     } else if ((config.mode.equals(PIN_MODE)) && (!config.shim)) {
1286                         if (!isLoggedIn) {
1287                             if (command.toString().equals("REQUEST")) {
1288                                 sendCommand(new GoogleTVCommand(
1289                                         GoogleTVRequest.encodeMessage(GoogleTVRequest.pinRequest(command.toString()))));
1290                             } else if (shimServerChain != null) {
1291                                 this.pinHash = GoogleTVUtils.validatePIN(command.toString(), androidtvPKI.getCert(),
1292                                         shimServerChain[0]);
1293                                 sendCommand(new GoogleTVCommand(
1294                                         GoogleTVRequest.encodeMessage(GoogleTVRequest.pinRequest(this.pinHash))));
1295                             }
1296                         }
1297                     } else if ((config.mode.equals(PIN_MODE)) && (config.shim)) {
1298                         if ((shimClientChain != null) && (shimServerChain != null) && (shimClientLocalChain != null)) {
1299                             this.pinHash = GoogleTVUtils.validatePIN(command.toString(), androidtvPKI.getCert(),
1300                                     shimServerChain[0]);
1301                             this.shimPinHash = GoogleTVUtils.validatePIN(command.toString(), shimClientChain[0],
1302                                     shimClientLocalChain[0]);
1303                         }
1304                     }
1305                 } catch (CertificateException e) {
1306                     logger.trace("PIN CertificateException", e);
1307                 }
1308             }
1309         } else if (CHANNEL_POWER.equals(channelUID.getId())) {
1310             if (command instanceof OnOffType) {
1311                 if ((power && command.equals(OnOffType.OFF)) || (!power && command.equals(OnOffType.ON))) {
1312                     sendCommand(new GoogleTVCommand(GoogleTVRequest.encodeMessage("5204081a1003")));
1313                 }
1314             } else if (command instanceof StringType) {
1315                 if ((power && command.toString().equals("OFF")) || (!power && command.toString().equals("ON"))) {
1316                     sendCommand(new GoogleTVCommand(GoogleTVRequest.encodeMessage("5204081a1003")));
1317                 }
1318             }
1319         } else if (CHANNEL_MUTE.equals(channelUID.getId())) {
1320             if (command instanceof OnOffType) {
1321                 if ((volMute && command.equals(OnOffType.OFF)) || (!volMute && command.equals(OnOffType.ON))) {
1322                     sendCommand(new GoogleTVCommand(GoogleTVRequest.encodeMessage("5204085b1003")));
1323                 }
1324             }
1325         } else if (CHANNEL_DEBUG.equals(channelUID.getId())) {
1326             if (command instanceof StringType) {
1327                 if (command.toString().startsWith("RAW", 9)) {
1328                     String newCommand = command.toString().substring(13);
1329                     String message = GoogleTVRequest.encodeMessage(newCommand);
1330                     if (logger.isTraceEnabled()) {
1331                         logger.trace("Raw Message Decodes as: {}", GoogleTVRequest.decodeMessage(message));
1332                     }
1333                     sendCommand(new GoogleTVCommand(message));
1334                 } else if (command.toString().startsWith("MSG", 9)) {
1335                     String newCommand = command.toString().substring(13);
1336                     messageParser.handleMessage(newCommand);
1337                 }
1338             }
1339         } else if (CHANNEL_KEYBOARD.equals(channelUID.getId())) {
1340             if (command instanceof StringType) {
1341                 String keyPress = "";
1342                 for (int i = 0; i < command.toString().length(); i++) {
1343                     keyPress = "aa01071a0512031a01"
1344                             + GoogleTVRequest.decodeMessage(String.valueOf(command.toString().charAt(i)));
1345                     sendCommand(new GoogleTVCommand(GoogleTVRequest.encodeMessage(keyPress)));
1346                 }
1347             }
1348         } else if (CHANNEL_PLAYER.equals(channelUID.getId())) {
1349             String message = "";
1350             if (command == PlayPauseType.PAUSE || command == OnOffType.OFF) {
1351                 message = "5204087F1003";
1352             } else if (command == PlayPauseType.PLAY || command == OnOffType.ON) {
1353                 message = "5204087E1003";
1354             } else if (command == NextPreviousType.NEXT) {
1355                 message = "520408571003";
1356             } else if (command == NextPreviousType.PREVIOUS) {
1357                 message = "520408581003";
1358             } else if (command == RewindFastforwardType.FASTFORWARD) {
1359                 message = "5204085A1003";
1360             } else if (command == RewindFastforwardType.REWIND) {
1361                 message = "520408591003";
1362             }
1363             sendCommand(new GoogleTVCommand(GoogleTVRequest.encodeMessage(message)));
1364         }
1365     }
1366
1367     public void dispose() {
1368         this.disposing = true;
1369
1370         Future<?> asyncInitializeTask = this.asyncInitializeTask;
1371         if (asyncInitializeTask != null) {
1372             asyncInitializeTask.cancel(true); // Interrupt async init task if it isn't done yet
1373         }
1374         Future<?> shimAsyncInitializeTask = this.shimAsyncInitializeTask;
1375         if (shimAsyncInitializeTask != null) {
1376             shimAsyncInitializeTask.cancel(true); // Interrupt async init task if it isn't done yet
1377         }
1378         ScheduledFuture<?> deviceHealthJob = this.deviceHealthJob;
1379         if (deviceHealthJob != null) {
1380             deviceHealthJob.cancel(true);
1381         }
1382         GoogleTVConnectionManager childConnectionManager = this.childConnectionManager;
1383         if (childConnectionManager != null) {
1384             childConnectionManager.dispose();
1385         }
1386         disconnect(true);
1387     }
1388 }