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/*
* Copyright (C) 2017 The LineageOS 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 org.lineageos.updater.controller;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.BatteryManager;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.support.v7.app.AlertDialog;
import android.support.v7.preference.PreferenceManager;
import android.util.Log;
import org.lineageos.updater.R;
import org.lineageos.updater.misc.Constants;
import org.lineageos.updater.misc.FileUtils;
import org.lineageos.updater.misc.Utils;
import org.lineageos.updater.model.UpdateInfo;
import org.lineageos.updater.model.UpdateStatus;
import java.io.File;
import java.io.IOException;
class UpdateInstaller {
private static final String TAG = "UpdateInstaller";
private static UpdateInstaller sInstance = null;
private static String sInstallingUpdate = null;
private Thread mPrepareUpdateThread;
private volatile boolean mCanCancel;
private final Context mContext;
private final UpdaterController mUpdaterController;
private UpdateInstaller(Context context, UpdaterController controller) {
mContext = context.getApplicationContext();
mUpdaterController = controller;
}
static synchronized UpdateInstaller getInstance(Context context,
UpdaterController updaterController) {
if (sInstance == null) {
sInstance = new UpdateInstaller(context, updaterController);
}
return sInstance;
}
static synchronized boolean isInstalling() {
return sInstallingUpdate != null;
}
static synchronized boolean isInstalling(String downloadId) {
return sInstallingUpdate != null && sInstallingUpdate.equals(downloadId);
}
private static boolean isBatteryLevelOk(Context context) {
BatteryManager bm = context.getSystemService(BatteryManager.class);
int percent = bm.getIntProperty(BatteryManager.BATTERY_PROPERTY_CAPACITY);
return percent >= context.getResources().getInteger(R.integer.battery_ok_percentage);
}
void install(String downloadId) {
if (isInstalling()) {
Log.e(TAG, "Already installing an update");
return;
}
if (!isBatteryLevelOk(mContext)) {
new AlertDialog.Builder(mContext)
.setTitle(R.string.dialog_battery_low_title)
.setMessage(R.string.dialog_battery_low_message)
.setPositiveButton(android.R.string.ok, null)
.show();
return;
}
UpdateInfo update = mUpdaterController.getUpdate(downloadId);
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(mContext);
long buildTimestamp = SystemProperties.getLong(Constants.PROP_BUILD_DATE, 0);
long lastBuildTimestamp = preferences.getLong(Constants.PREF_INSTALL_OLD_TIMESTAMP,
buildTimestamp);
boolean isReinstalling = buildTimestamp == lastBuildTimestamp;
preferences.edit()
.putLong(Constants.PREF_INSTALL_OLD_TIMESTAMP, buildTimestamp)
.putLong(Constants.PREF_INSTALL_NEW_TIMESTAMP, update.getTimestamp())
.putString(Constants.PREF_INSTALL_PACKAGE_PATH, update.getFile().getAbsolutePath())
.putBoolean(Constants.PREF_INSTALL_AGAIN, isReinstalling)
.putBoolean(Constants.PREF_INSTALL_NOTIFIED, false)
.apply();
if (Utils.isEncrypted(mContext, update.getFile())) {
// uncrypt rewrites the file so that it can be read without mounting
// the filesystem, so create a copy of it.
prepareForUncryptAndInstall(update);
} else {
installPackage(update.getFile(), downloadId);
}
}
private void installPackage(File update, String downloadId) {
try {
android.os.RecoverySystem.installPackage(mContext, update);
} catch (IOException e) {
Log.e(TAG, "Could not install update", e);
mUpdaterController.getActualUpdate(downloadId)
.setStatus(UpdateStatus.INSTALLATION_FAILED);
mUpdaterController.notifyUpdateChange(downloadId);
}
}
private synchronized void prepareForUncryptAndInstall(UpdateInfo update) {
String uncryptFilePath = update.getFile().getAbsolutePath() + Constants.UNCRYPT_FILE_EXT;
File uncryptFile = new File(uncryptFilePath);
Runnable copyUpdateRunnable = new Runnable() {
private long mLastUpdate = -1;
FileUtils.ProgressCallBack mProgressCallBack = new FileUtils.ProgressCallBack() {
@Override
public void update(int progress) {
long now = SystemClock.elapsedRealtime();
if (mLastUpdate < 0 || now - mLastUpdate > 500) {
mUpdaterController.getActualUpdate(update.getDownloadId())
.setInstallProgress(progress);
mUpdaterController.notifyInstallProgress(update.getDownloadId());
mLastUpdate = now;
}
}
};
@Override
public void run() {
try {
mCanCancel = true;
FileUtils.copyFile(update.getFile(), uncryptFile, mProgressCallBack);
mCanCancel = false;
if (mPrepareUpdateThread.isInterrupted()) {
mUpdaterController.getActualUpdate(update.getDownloadId())
.setStatus(UpdateStatus.INSTALLATION_CANCELLED);
mUpdaterController.getActualUpdate(update.getDownloadId())
.setInstallProgress(0);
uncryptFile.delete();
} else {
installPackage(uncryptFile, update.getDownloadId());
}
} catch (IOException e) {
Log.e(TAG, "Could not copy update", e);
uncryptFile.delete();
mUpdaterController.getActualUpdate(update.getDownloadId())
.setStatus(UpdateStatus.INSTALLATION_FAILED);
} finally {
synchronized (UpdateInstaller.this) {
mCanCancel = false;
mPrepareUpdateThread = null;
sInstallingUpdate = null;
}
mUpdaterController.notifyUpdateChange(update.getDownloadId());
}
}
};
mPrepareUpdateThread = new Thread(copyUpdateRunnable);
mPrepareUpdateThread.start();
sInstallingUpdate = update.getDownloadId();
mCanCancel = false;
mUpdaterController.getActualUpdate(update.getDownloadId())
.setStatus(UpdateStatus.INSTALLING);
mUpdaterController.notifyUpdateChange(update.getDownloadId());
}
public synchronized void cancel() {
if (!mCanCancel) {
Log.d(TAG, "Nothing to cancel");
return;
}
mPrepareUpdateThread.interrupt();
}
}
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