| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.app; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.WorkerThread; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.PatternMatcher; |
| import android.text.TextUtils; |
| import android.util.Slog; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.server.SystemService; |
| import com.android.server.app.GameServiceConfiguration.GameServiceComponentConfiguration; |
| |
| import java.util.Objects; |
| import java.util.concurrent.Executor; |
| |
| /** |
| * Responsible for managing the Game Service API. |
| * |
| * Key responsibilities selecting the active Game Service provider, binding to the Game Service |
| * provider services, and driving the GameService/GameSession lifecycles. |
| */ |
| final class GameServiceController { |
| private static final String TAG = "GameServiceController"; |
| |
| private final Object mLock = new Object(); |
| private final Context mContext; |
| private final Executor mBackgroundExecutor; |
| private final GameServiceProviderSelector mGameServiceProviderSelector; |
| private final GameServiceProviderInstanceFactory mGameServiceProviderInstanceFactory; |
| |
| private volatile boolean mHasBootCompleted; |
| @Nullable |
| private volatile String mGameServiceProviderOverride; |
| @Nullable |
| private BroadcastReceiver mGameServicePackageChangedReceiver; |
| @Nullable |
| private volatile SystemService.TargetUser mCurrentForegroundUser; |
| @GuardedBy("mLock") |
| @Nullable |
| private volatile GameServiceComponentConfiguration mActiveGameServiceComponentConfiguration; |
| @GuardedBy("mLock") |
| @Nullable |
| private volatile GameServiceProviderInstance mGameServiceProviderInstance; |
| @GuardedBy("mLock") |
| @Nullable |
| private volatile String mActiveGameServiceProviderPackage; |
| |
| GameServiceController( |
| @NonNull Context context, @NonNull Executor backgroundExecutor, |
| @NonNull GameServiceProviderSelector gameServiceProviderSelector, |
| @NonNull GameServiceProviderInstanceFactory gameServiceProviderInstanceFactory) { |
| mContext = context; |
| mGameServiceProviderInstanceFactory = gameServiceProviderInstanceFactory; |
| mBackgroundExecutor = backgroundExecutor; |
| mGameServiceProviderSelector = gameServiceProviderSelector; |
| } |
| |
| void onBootComplete() { |
| if (mHasBootCompleted) { |
| return; |
| } |
| mHasBootCompleted = true; |
| |
| mBackgroundExecutor.execute(this::evaluateActiveGameServiceProvider); |
| } |
| |
| void notifyUserStarted(@NonNull SystemService.TargetUser user) { |
| if (mCurrentForegroundUser != null) { |
| return; |
| } |
| |
| setCurrentForegroundUserAndEvaluateProvider(user); |
| } |
| |
| void notifyNewForegroundUser(@NonNull SystemService.TargetUser user) { |
| setCurrentForegroundUserAndEvaluateProvider(user); |
| } |
| |
| void notifyUserUnlocking(@NonNull SystemService.TargetUser user) { |
| boolean isSameAsForegroundUser = |
| mCurrentForegroundUser != null |
| && mCurrentForegroundUser.getUserIdentifier() == user.getUserIdentifier(); |
| if (!isSameAsForegroundUser) { |
| return; |
| } |
| |
| // It is likely that the Game Service provider's components are not Direct Boot mode aware |
| // and will not be capable of running until the user has unlocked the device. To allow for |
| // this we re-evaluate the active game service provider once these components are available. |
| |
| mBackgroundExecutor.execute(this::evaluateActiveGameServiceProvider); |
| } |
| |
| void notifyUserStopped(@NonNull SystemService.TargetUser user) { |
| boolean isSameAsForegroundUser = |
| mCurrentForegroundUser != null |
| && mCurrentForegroundUser.getUserIdentifier() == user.getUserIdentifier(); |
| if (!isSameAsForegroundUser) { |
| return; |
| } |
| |
| setCurrentForegroundUserAndEvaluateProvider(null); |
| } |
| |
| void setGameServiceProvider(@Nullable String packageName) { |
| boolean hasPackageChanged = !Objects.equals(mGameServiceProviderOverride, packageName); |
| if (!hasPackageChanged) { |
| return; |
| } |
| mGameServiceProviderOverride = packageName; |
| |
| mBackgroundExecutor.execute(this::evaluateActiveGameServiceProvider); |
| } |
| |
| private void setCurrentForegroundUserAndEvaluateProvider( |
| @Nullable SystemService.TargetUser user) { |
| boolean hasUserChanged = |
| !Objects.equals(mCurrentForegroundUser, user); |
| if (!hasUserChanged) { |
| return; |
| } |
| mCurrentForegroundUser = user; |
| |
| mBackgroundExecutor.execute(this::evaluateActiveGameServiceProvider); |
| } |
| |
| @WorkerThread |
| private void evaluateActiveGameServiceProvider() { |
| if (!mHasBootCompleted) { |
| return; |
| } |
| |
| synchronized (mLock) { |
| final GameServiceConfiguration selectedGameServiceConfiguration = |
| mGameServiceProviderSelector.get(mCurrentForegroundUser, |
| mGameServiceProviderOverride); |
| final String gameServicePackage = |
| selectedGameServiceConfiguration == null ? null : |
| selectedGameServiceConfiguration.getPackageName(); |
| final GameServiceComponentConfiguration gameServiceComponentConfiguration = |
| selectedGameServiceConfiguration == null ? null |
| : selectedGameServiceConfiguration |
| .getGameServiceComponentConfiguration(); |
| |
| evaluateGameServiceProviderPackageChangedListenerLocked(gameServicePackage); |
| |
| boolean didActiveGameServiceProviderChange = |
| !Objects.equals(gameServiceComponentConfiguration, |
| mActiveGameServiceComponentConfiguration); |
| if (!didActiveGameServiceProviderChange) { |
| return; |
| } |
| |
| if (mGameServiceProviderInstance != null) { |
| Slog.i(TAG, "Stopping Game Service provider: " |
| + mActiveGameServiceComponentConfiguration); |
| mGameServiceProviderInstance.stop(); |
| mGameServiceProviderInstance = null; |
| } |
| |
| mActiveGameServiceComponentConfiguration = gameServiceComponentConfiguration; |
| if (mActiveGameServiceComponentConfiguration == null) { |
| return; |
| } |
| |
| Slog.i(TAG, |
| "Starting Game Service provider: " + mActiveGameServiceComponentConfiguration); |
| mGameServiceProviderInstance = |
| mGameServiceProviderInstanceFactory.create( |
| mActiveGameServiceComponentConfiguration); |
| mGameServiceProviderInstance.start(); |
| } |
| } |
| |
| @GuardedBy("mLock") |
| private void evaluateGameServiceProviderPackageChangedListenerLocked( |
| @Nullable String gameServicePackage) { |
| if (TextUtils.equals(mActiveGameServiceProviderPackage, gameServicePackage)) { |
| return; |
| } |
| |
| if (mGameServicePackageChangedReceiver != null) { |
| mContext.unregisterReceiver(mGameServicePackageChangedReceiver); |
| mGameServicePackageChangedReceiver = null; |
| } |
| |
| mActiveGameServiceProviderPackage = gameServicePackage; |
| |
| if (TextUtils.isEmpty(mActiveGameServiceProviderPackage)) { |
| return; |
| } |
| |
| IntentFilter intentFilter = new IntentFilter(); |
| intentFilter.addAction(Intent.ACTION_PACKAGE_ADDED); |
| intentFilter.addAction(Intent.ACTION_PACKAGE_CHANGED); |
| intentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED); |
| intentFilter.addDataScheme("package"); |
| intentFilter.addDataSchemeSpecificPart(gameServicePackage, PatternMatcher.PATTERN_LITERAL); |
| mGameServicePackageChangedReceiver = new PackageChangedBroadcastReceiver( |
| gameServicePackage); |
| mContext.registerReceiver( |
| mGameServicePackageChangedReceiver, |
| intentFilter); |
| } |
| |
| private final class PackageChangedBroadcastReceiver extends BroadcastReceiver { |
| private final String mPackageName; |
| |
| PackageChangedBroadcastReceiver(String packageName) { |
| mPackageName = packageName; |
| } |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (!TextUtils.equals(intent.getData().getSchemeSpecificPart(), mPackageName)) { |
| return; |
| } |
| mBackgroundExecutor.execute( |
| GameServiceController.this::evaluateActiveGameServiceProvider); |
| } |
| } |
| } |