| /* |
| * Copyright (C) 2015 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.systemui.qs.external; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.ServiceConnection; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ServiceInfo; |
| import android.net.Uri; |
| import android.os.Binder; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.os.UserHandle; |
| import android.service.quicksettings.IQSService; |
| import android.service.quicksettings.IQSTileService; |
| import android.service.quicksettings.Tile; |
| import android.service.quicksettings.TileService; |
| import android.util.ArraySet; |
| import android.util.Log; |
| |
| import androidx.annotation.VisibleForTesting; |
| |
| import com.android.systemui.broadcast.BroadcastDispatcher; |
| |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| /** |
| * Manages the lifecycle of a TileService. |
| * <p> |
| * Will keep track of all calls on the IQSTileService interface and will relay those calls to the |
| * TileService as soon as it is bound. It will only bind to the service when it is allowed to |
| * ({@link #setBindService(boolean)}) and when the service is available. |
| */ |
| public class TileLifecycleManager extends BroadcastReceiver implements |
| IQSTileService, ServiceConnection, IBinder.DeathRecipient { |
| public static final boolean DEBUG = false; |
| |
| private static final String TAG = "TileLifecycleManager"; |
| |
| private static final int MSG_ON_ADDED = 0; |
| private static final int MSG_ON_REMOVED = 1; |
| private static final int MSG_ON_CLICK = 2; |
| private static final int MSG_ON_UNLOCK_COMPLETE = 3; |
| |
| // Bind retry control. |
| private static final int MAX_BIND_RETRIES = 5; |
| private static final int DEFAULT_BIND_RETRY_DELAY = 1000; |
| |
| // Shared prefs that hold tile lifecycle info. |
| private static final String TILES = "tiles_prefs"; |
| |
| private final Context mContext; |
| private final Handler mHandler; |
| private final Intent mIntent; |
| private final UserHandle mUser; |
| private final IBinder mToken = new Binder(); |
| private final PackageManagerAdapter mPackageManagerAdapter; |
| private final BroadcastDispatcher mBroadcastDispatcher; |
| |
| private Set<Integer> mQueuedMessages = new ArraySet<>(); |
| private QSTileServiceWrapper mWrapper; |
| private boolean mListening; |
| private IBinder mClickBinder; |
| |
| private int mBindTryCount; |
| private int mBindRetryDelay = DEFAULT_BIND_RETRY_DELAY; |
| private boolean mBound; |
| private AtomicBoolean mPackageReceiverRegistered = new AtomicBoolean(false); |
| private AtomicBoolean mUserReceiverRegistered = new AtomicBoolean(false); |
| private boolean mUnbindImmediate; |
| private TileChangeListener mChangeListener; |
| // Return value from bindServiceAsUser, determines whether safe to call unbind. |
| private boolean mIsBound; |
| |
| public TileLifecycleManager(Handler handler, Context context, IQSService service, Tile tile, |
| Intent intent, UserHandle user, BroadcastDispatcher broadcastDispatcher) { |
| this(handler, context, service, tile, intent, user, new PackageManagerAdapter(context), |
| broadcastDispatcher); |
| } |
| |
| @VisibleForTesting |
| TileLifecycleManager(Handler handler, Context context, IQSService service, Tile tile, |
| Intent intent, UserHandle user, PackageManagerAdapter packageManagerAdapter, |
| BroadcastDispatcher broadcastDispatcher) { |
| mContext = context; |
| mHandler = handler; |
| mIntent = intent; |
| mIntent.putExtra(TileService.EXTRA_SERVICE, service.asBinder()); |
| mIntent.putExtra(TileService.EXTRA_TOKEN, mToken); |
| mUser = user; |
| mPackageManagerAdapter = packageManagerAdapter; |
| mBroadcastDispatcher = broadcastDispatcher; |
| if (DEBUG) Log.d(TAG, "Creating " + mIntent + " " + mUser); |
| } |
| |
| public ComponentName getComponent() { |
| return mIntent.getComponent(); |
| } |
| |
| public boolean hasPendingClick() { |
| synchronized (mQueuedMessages) { |
| return mQueuedMessages.contains(MSG_ON_CLICK); |
| } |
| } |
| |
| public void setBindRetryDelay(int delayMs) { |
| mBindRetryDelay = delayMs; |
| } |
| |
| public boolean isActiveTile() { |
| try { |
| ServiceInfo info = mPackageManagerAdapter.getServiceInfo(mIntent.getComponent(), |
| PackageManager.MATCH_UNINSTALLED_PACKAGES | PackageManager.GET_META_DATA); |
| return info.metaData != null |
| && info.metaData.getBoolean(TileService.META_DATA_ACTIVE_TILE, false); |
| } catch (PackageManager.NameNotFoundException e) { |
| return false; |
| } |
| } |
| |
| /** |
| * Determines whether the associated TileService is a Boolean Tile. |
| * |
| * @return true if {@link TileService#META_DATA_BOOLEAN_TILE} is set to {@code true} for this |
| * tile |
| * @see TileService#META_DATA_BOOLEAN_TILE |
| */ |
| public boolean isBooleanTile() { |
| try { |
| ServiceInfo info = mPackageManagerAdapter.getServiceInfo(mIntent.getComponent(), |
| PackageManager.MATCH_UNINSTALLED_PACKAGES | PackageManager.GET_META_DATA); |
| return info.metaData != null |
| && info.metaData.getBoolean(TileService.META_DATA_BOOLEAN_TILE, false); |
| } catch (PackageManager.NameNotFoundException e) { |
| return false; |
| } |
| } |
| |
| /** |
| * Binds just long enough to send any queued messages, then unbinds. |
| */ |
| public void flushMessagesAndUnbind() { |
| mUnbindImmediate = true; |
| setBindService(true); |
| } |
| |
| public void setBindService(boolean bind) { |
| if (mBound && mUnbindImmediate) { |
| // If we are already bound and expecting to unbind, this means we should stay bound |
| // because something else wants to hold the connection open. |
| mUnbindImmediate = false; |
| return; |
| } |
| mBound = bind; |
| if (bind) { |
| if (mBindTryCount == MAX_BIND_RETRIES) { |
| // Too many failures, give up on this tile until an update. |
| startPackageListening(); |
| return; |
| } |
| if (!checkComponentState()) { |
| return; |
| } |
| if (DEBUG) Log.d(TAG, "Binding service " + mIntent + " " + mUser); |
| mBindTryCount++; |
| try { |
| mIsBound = mContext.bindServiceAsUser(mIntent, this, |
| Context.BIND_AUTO_CREATE |
| | Context.BIND_FOREGROUND_SERVICE_WHILE_AWAKE |
| | Context.BIND_ALLOW_BACKGROUND_ACTIVITY_STARTS |
| | Context.BIND_WAIVE_PRIORITY, |
| mUser); |
| } catch (SecurityException e) { |
| Log.e(TAG, "Failed to bind to service", e); |
| mIsBound = false; |
| } |
| } else { |
| if (DEBUG) Log.d(TAG, "Unbinding service " + mIntent + " " + mUser); |
| // Give it another chance next time it needs to be bound, out of kindness. |
| mBindTryCount = 0; |
| mWrapper = null; |
| if (mIsBound) { |
| mContext.unbindService(this); |
| mIsBound = false; |
| } |
| } |
| } |
| |
| @Override |
| public void onServiceConnected(ComponentName name, IBinder service) { |
| if (DEBUG) Log.d(TAG, "onServiceConnected " + name); |
| // Got a connection, set the binding count to 0. |
| mBindTryCount = 0; |
| final QSTileServiceWrapper wrapper = new QSTileServiceWrapper(Stub.asInterface(service)); |
| try { |
| service.linkToDeath(this, 0); |
| } catch (RemoteException e) { |
| } |
| mWrapper = wrapper; |
| handlePendingMessages(); |
| } |
| |
| @Override |
| public void onServiceDisconnected(ComponentName name) { |
| if (DEBUG) Log.d(TAG, "onServiceDisconnected " + name); |
| handleDeath(); |
| } |
| |
| private void handlePendingMessages() { |
| // This ordering is laid out manually to make sure we preserve the TileService |
| // lifecycle. |
| ArraySet<Integer> queue; |
| synchronized (mQueuedMessages) { |
| queue = new ArraySet<>(mQueuedMessages); |
| mQueuedMessages.clear(); |
| } |
| if (queue.contains(MSG_ON_ADDED)) { |
| if (DEBUG) Log.d(TAG, "Handling pending onAdded"); |
| onTileAdded(); |
| } |
| if (mListening) { |
| if (DEBUG) Log.d(TAG, "Handling pending onStartListening"); |
| onStartListening(); |
| } |
| if (queue.contains(MSG_ON_CLICK)) { |
| if (DEBUG) Log.d(TAG, "Handling pending onClick"); |
| if (!mListening) { |
| Log.w(TAG, "Managed to get click on non-listening state..."); |
| // Skipping click since lost click privileges. |
| } else { |
| onClick(mClickBinder); |
| } |
| } |
| if (queue.contains(MSG_ON_UNLOCK_COMPLETE)) { |
| if (DEBUG) Log.d(TAG, "Handling pending onUnlockComplete"); |
| if (!mListening) { |
| Log.w(TAG, "Managed to get unlock on non-listening state..."); |
| // Skipping unlock since lost click privileges. |
| } else { |
| onUnlockComplete(); |
| } |
| } |
| if (queue.contains(MSG_ON_REMOVED)) { |
| if (DEBUG) Log.d(TAG, "Handling pending onRemoved"); |
| if (mListening) { |
| Log.w(TAG, "Managed to get remove in listening state..."); |
| onStopListening(); |
| } |
| onTileRemoved(); |
| } |
| if (mUnbindImmediate) { |
| mUnbindImmediate = false; |
| setBindService(false); |
| } |
| } |
| |
| public void handleDestroy() { |
| if (DEBUG) Log.d(TAG, "handleDestroy"); |
| if (mPackageReceiverRegistered.get() || mUserReceiverRegistered.get()) { |
| stopPackageListening(); |
| } |
| } |
| |
| private void handleDeath() { |
| if (mWrapper == null) return; |
| mWrapper = null; |
| if (!mBound) return; |
| if (DEBUG) Log.d(TAG, "handleDeath"); |
| if (checkComponentState()) { |
| mHandler.postDelayed(new Runnable() { |
| @Override |
| public void run() { |
| if (mBound) { |
| // Retry binding. |
| setBindService(true); |
| } |
| } |
| }, mBindRetryDelay); |
| } |
| } |
| |
| private boolean checkComponentState() { |
| if (!isPackageAvailable() || !isComponentAvailable()) { |
| startPackageListening(); |
| return false; |
| } |
| return true; |
| } |
| |
| private void startPackageListening() { |
| if (DEBUG) Log.d(TAG, "startPackageListening"); |
| IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); |
| filter.addAction(Intent.ACTION_PACKAGE_CHANGED); |
| filter.addDataScheme("package"); |
| try { |
| mPackageReceiverRegistered.set(true); |
| mContext.registerReceiverAsUser(this, mUser, filter, null, mHandler); |
| } catch (Exception ex) { |
| mPackageReceiverRegistered.set(false); |
| Log.e(TAG, "Could not register package receiver", ex); |
| } |
| filter = new IntentFilter(Intent.ACTION_USER_UNLOCKED); |
| try { |
| mUserReceiverRegistered.set(true); |
| mBroadcastDispatcher.registerReceiver(this, filter, mHandler, mUser); |
| } catch (Exception ex) { |
| mUserReceiverRegistered.set(false); |
| Log.e(TAG, "Could not register unlock receiver", ex); |
| } |
| } |
| |
| private void stopPackageListening() { |
| if (DEBUG) Log.d(TAG, "stopPackageListening"); |
| if (mUserReceiverRegistered.compareAndSet(true, false)) { |
| mBroadcastDispatcher.unregisterReceiver(this); |
| } |
| if (mPackageReceiverRegistered.compareAndSet(true, false)) { |
| mContext.unregisterReceiver(this); |
| } |
| } |
| |
| public void setTileChangeListener(TileChangeListener changeListener) { |
| mChangeListener = changeListener; |
| } |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (DEBUG) Log.d(TAG, "onReceive: " + intent); |
| if (!Intent.ACTION_USER_UNLOCKED.equals(intent.getAction())) { |
| Uri data = intent.getData(); |
| String pkgName = data.getEncodedSchemeSpecificPart(); |
| if (!Objects.equals(pkgName, mIntent.getComponent().getPackageName())) { |
| return; |
| } |
| } |
| if (Intent.ACTION_PACKAGE_CHANGED.equals(intent.getAction()) && mChangeListener != null) { |
| mChangeListener.onTileChanged(mIntent.getComponent()); |
| } |
| stopPackageListening(); |
| if (mBound) { |
| // Trying to bind again will check the state of the package before bothering to bind. |
| if (DEBUG) Log.d(TAG, "Trying to rebind"); |
| setBindService(true); |
| } |
| } |
| |
| private boolean isComponentAvailable() { |
| String packageName = mIntent.getComponent().getPackageName(); |
| try { |
| ServiceInfo si = mPackageManagerAdapter.getServiceInfo(mIntent.getComponent(), |
| 0, mUser.getIdentifier()); |
| if (DEBUG && si == null) Log.d(TAG, "Can't find component " + mIntent.getComponent()); |
| return si != null; |
| } catch (RemoteException e) { |
| // Shouldn't happen. |
| } |
| return false; |
| } |
| |
| private boolean isPackageAvailable() { |
| String packageName = mIntent.getComponent().getPackageName(); |
| try { |
| mPackageManagerAdapter.getPackageInfoAsUser(packageName, 0, mUser.getIdentifier()); |
| return true; |
| } catch (PackageManager.NameNotFoundException e) { |
| if (DEBUG) Log.d(TAG, "Package not available: " + packageName, e); |
| else Log.d(TAG, "Package not available: " + packageName); |
| } |
| return false; |
| } |
| |
| private void queueMessage(int message) { |
| synchronized (mQueuedMessages) { |
| mQueuedMessages.add(message); |
| } |
| } |
| |
| @Override |
| public void onTileAdded() { |
| if (DEBUG) Log.d(TAG, "onTileAdded"); |
| if (mWrapper == null || !mWrapper.onTileAdded()) { |
| queueMessage(MSG_ON_ADDED); |
| handleDeath(); |
| } |
| } |
| |
| @Override |
| public void onTileRemoved() { |
| if (DEBUG) Log.d(TAG, "onTileRemoved"); |
| if (mWrapper == null || !mWrapper.onTileRemoved()) { |
| queueMessage(MSG_ON_REMOVED); |
| handleDeath(); |
| } |
| } |
| |
| @Override |
| public void onStartListening() { |
| if (DEBUG) Log.d(TAG, "onStartListening"); |
| mListening = true; |
| if (mWrapper != null && !mWrapper.onStartListening()) { |
| handleDeath(); |
| } |
| } |
| |
| @Override |
| public void onStopListening() { |
| if (DEBUG) Log.d(TAG, "onStopListening"); |
| mListening = false; |
| if (mWrapper != null && !mWrapper.onStopListening()) { |
| handleDeath(); |
| } |
| } |
| |
| @Override |
| public void onClick(IBinder iBinder) { |
| if (DEBUG) Log.d(TAG, "onClick " + iBinder + " " + mUser); |
| if (mWrapper == null || !mWrapper.onClick(iBinder)) { |
| mClickBinder = iBinder; |
| queueMessage(MSG_ON_CLICK); |
| handleDeath(); |
| } |
| } |
| |
| @Override |
| public void onUnlockComplete() { |
| if (DEBUG) Log.d(TAG, "onUnlockComplete"); |
| if (mWrapper == null || !mWrapper.onUnlockComplete()) { |
| queueMessage(MSG_ON_UNLOCK_COMPLETE); |
| handleDeath(); |
| } |
| } |
| |
| @Override |
| public IBinder asBinder() { |
| return mWrapper != null ? mWrapper.asBinder() : null; |
| } |
| |
| @Override |
| public void binderDied() { |
| if (DEBUG) Log.d(TAG, "binderDeath"); |
| handleDeath(); |
| } |
| |
| public IBinder getToken() { |
| return mToken; |
| } |
| |
| public interface TileChangeListener { |
| void onTileChanged(ComponentName tile); |
| } |
| |
| public static boolean isTileAdded(Context context, ComponentName component) { |
| return context.getSharedPreferences(TILES, 0).getBoolean(component.flattenToString(), false); |
| } |
| |
| public static void setTileAdded(Context context, ComponentName component, boolean added) { |
| context.getSharedPreferences(TILES, 0).edit().putBoolean(component.flattenToString(), |
| added).commit(); |
| } |
| } |