git.basschouten.com Git - openhab-addons.git/blob

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