| /* |
| * Copyright (C) 2017 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.timezone; |
| |
| import com.android.server.EventLogTags; |
| |
| import android.app.timezone.RulesUpdaterContract; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.PatternMatcher; |
| import android.util.Slog; |
| |
| /** |
| * The bona fide implementation of {@link IntentHelper}. |
| */ |
| final class IntentHelperImpl implements IntentHelper { |
| |
| private final static String TAG = "timezone.IntentHelperImpl"; |
| |
| private final Context mContext; |
| private String mUpdaterAppPackageName; |
| |
| private boolean mReliabilityReceiverEnabled; |
| private Receiver mReliabilityReceiver; |
| |
| IntentHelperImpl(Context context) { |
| mContext = context; |
| } |
| |
| @Override |
| public void initialize( |
| String updaterAppPackageName, String dataAppPackageName, Listener listener) { |
| mUpdaterAppPackageName = updaterAppPackageName; |
| |
| // Register for events of interest. |
| |
| // The intent filter that triggers when package update events happen that indicate there may |
| // be work to do. |
| IntentFilter packageIntentFilter = new IntentFilter(); |
| // Either of these mean a downgrade? |
| packageIntentFilter.addAction(Intent.ACTION_PACKAGE_CHANGED); |
| packageIntentFilter.addAction(Intent.ACTION_PACKAGE_REPLACED); |
| packageIntentFilter.addDataScheme("package"); |
| packageIntentFilter.addDataSchemeSpecificPart( |
| updaterAppPackageName, PatternMatcher.PATTERN_LITERAL); |
| packageIntentFilter.addDataSchemeSpecificPart( |
| dataAppPackageName, PatternMatcher.PATTERN_LITERAL); |
| Receiver packageUpdateReceiver = new Receiver(listener, true /* packageUpdated */); |
| mContext.registerReceiver(packageUpdateReceiver, packageIntentFilter); |
| |
| // TODO(nfuller): Add more exotic intents as needed. e.g. |
| // packageIntentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED); |
| // Also, disabled...? |
| mReliabilityReceiver = new Receiver(listener, false /* packageUpdated */); |
| } |
| |
| /** Sends an intent to trigger an update check. */ |
| @Override |
| public void sendTriggerUpdateCheck(CheckToken checkToken) { |
| RulesUpdaterContract.sendBroadcast( |
| mContext, mUpdaterAppPackageName, checkToken.toByteArray()); |
| EventLogTags.writeTimezoneTriggerCheck(checkToken.toString()); |
| } |
| |
| @Override |
| public synchronized void enableReliabilityTriggering() { |
| if (!mReliabilityReceiverEnabled) { |
| // The intent filter that exists to make updates reliable in the event of failures / |
| // reboots. |
| IntentFilter reliabilityIntentFilter = new IntentFilter(); |
| reliabilityIntentFilter.addAction(Intent.ACTION_IDLE_MAINTENANCE_START); |
| mContext.registerReceiver(mReliabilityReceiver, reliabilityIntentFilter); |
| mReliabilityReceiverEnabled = true; |
| } |
| } |
| |
| @Override |
| public synchronized void disableReliabilityTriggering() { |
| if (mReliabilityReceiverEnabled) { |
| mContext.unregisterReceiver(mReliabilityReceiver); |
| mReliabilityReceiverEnabled = false; |
| } |
| } |
| |
| private static class Receiver extends BroadcastReceiver { |
| private final Listener mListener; |
| private final boolean mPackageUpdated; |
| |
| private Receiver(Listener listener, boolean packageUpdated) { |
| mListener = listener; |
| mPackageUpdated = packageUpdated; |
| } |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| Slog.d(TAG, "Received intent: " + intent.toString()); |
| mListener.triggerUpdateIfNeeded(mPackageUpdated); |
| } |
| } |
| |
| } |