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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.UpdateEngine;
import android.os.UpdateEngineCallback;
import android.support.v7.preference.PreferenceManager;
import android.util.Log;
import org.lineageos.updater.misc.Constants;
import org.lineageos.updater.misc.Utils;
import org.lineageos.updater.model.Update;
import org.lineageos.updater.model.UpdateStatus;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
class ABUpdateInstaller {
private static final String TAG = "ABUpdateInstaller";
private static final String PREF_INSTALLING_AB_ID = "installing_ab_id";
private static final String PREF_NEEDS_REBOOT = "needs_reboot";
private final UpdaterController mUpdaterController;
private final Context mContext;
private String mDownloadId;
private boolean mReconnecting;
private UpdateEngine mUpdateEngine;
private final UpdateEngineCallback mUpdateEngineCallback = new UpdateEngineCallback() {
@Override
public void onStatusUpdate(int status, float percent) {
Update update = mUpdaterController.getActualUpdate(mDownloadId);
if (update == null) {
// We read the id from a preference, the update could no longer exist
installationDone(status == UpdateEngine.UpdateStatusConstants.UPDATED_NEED_REBOOT);
return;
}
switch (status) {
case UpdateEngine.UpdateStatusConstants.DOWNLOADING:
case UpdateEngine.UpdateStatusConstants.FINALIZING: {
int progress = Math.round(percent * 100);
mUpdaterController.getActualUpdate(mDownloadId).setInstallProgress(progress);
boolean finalizing = status == UpdateEngine.UpdateStatusConstants.FINALIZING;
mUpdaterController.getActualUpdate(mDownloadId).setFinalizing(finalizing);
mUpdaterController.notifyInstallProgress(mDownloadId);
}
break;
case UpdateEngine.UpdateStatusConstants.REPORTING_ERROR_EVENT: {
installationDone(false);
update.setInstallProgress(0);
update.setStatus(UpdateStatus.INSTALLATION_FAILED);
mUpdaterController.notifyUpdateChange(mDownloadId);
}
break;
case UpdateEngine.UpdateStatusConstants.UPDATED_NEED_REBOOT: {
installationDone(true);
update.setInstallProgress(0);
update.setStatus(UpdateStatus.INSTALLED);
mUpdaterController.notifyUpdateChange(mDownloadId);
SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(
mContext);
boolean deleteUpdate = pref.getBoolean(Constants.PREF_AUTO_DELETE_UPDATES,
false);
if (deleteUpdate) {
mUpdaterController.deleteUpdate(mDownloadId);
}
}
break;
case UpdateEngine.UpdateStatusConstants.IDLE: {
if (mReconnecting) {
// The service was restarted because we thought we were installing an
// update, but we aren't, so clear everything.
installationDone(false);
mReconnecting = false;
}
}
break;
}
}
@Override
public void onPayloadApplicationComplete(int errorCode) {
}
};
static synchronized boolean isInstallingUpdate(Context context) {
SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(context);
return pref.getString(ABUpdateInstaller.PREF_INSTALLING_AB_ID, null) != null ||
pref.getBoolean(ABUpdateInstaller.PREF_NEEDS_REBOOT, false);
}
static synchronized boolean isInstallingUpdate(Context context, String downloadId) {
SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(context);
return downloadId.equals(pref.getString(ABUpdateInstaller.PREF_INSTALLING_AB_ID, null)) ||
pref.getBoolean(ABUpdateInstaller.PREF_NEEDS_REBOOT, false);
}
ABUpdateInstaller(Context context, UpdaterController updaterController) {
mUpdaterController = updaterController;
mContext = context;
}
public boolean install(String downloadId) {
if (isInstallingUpdate(mContext)) {
Log.e(TAG, "Already installing an update");
return false;
}
mDownloadId = downloadId;
File file = mUpdaterController.getActualUpdate(mDownloadId).getFile();
if (!file.exists()) {
Log.e(TAG, "The given update doesn't exist");
mUpdaterController.getActualUpdate(downloadId)
.setStatus(UpdateStatus.INSTALLATION_FAILED);
mUpdaterController.notifyUpdateChange(downloadId);
return false;
}
long offset;
String[] headerKeyValuePairs;
try {
ZipFile zipFile = new ZipFile(file);
offset = Utils.getZipEntryOffset(zipFile, Constants.AB_PAYLOAD_BIN_PATH);
ZipEntry payloadPropEntry = zipFile.getEntry(Constants.AB_PAYLOAD_PROPERTIES_PATH);
try (InputStream is = zipFile.getInputStream(payloadPropEntry);
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr)) {
List<String> lines = new ArrayList<>();
for (String line; (line = br.readLine()) != null;) {
lines.add(line);
}
headerKeyValuePairs = new String[lines.size()];
headerKeyValuePairs = lines.toArray(headerKeyValuePairs);
}
zipFile.close();
} catch (IOException | IllegalArgumentException e) {
Log.e(TAG, "Could not prepare " + file, e);
mUpdaterController.getActualUpdate(mDownloadId)
.setStatus(UpdateStatus.INSTALLATION_FAILED);
mUpdaterController.notifyUpdateChange(mDownloadId);
return false;
}
mUpdateEngine = new UpdateEngine();
if (!mUpdateEngine.bind(mUpdateEngineCallback)) {
Log.e(TAG, "Could not bind");
mUpdaterController.getActualUpdate(downloadId)
.setStatus(UpdateStatus.INSTALLATION_FAILED);
mUpdaterController.notifyUpdateChange(downloadId);
return false;
}
String zipFileUri = "file://" + file.getAbsolutePath();
mUpdateEngine.applyPayload(zipFileUri, offset, 0, headerKeyValuePairs);
mUpdaterController.getActualUpdate(mDownloadId).setStatus(UpdateStatus.INSTALLING);
mUpdaterController.notifyUpdateChange(mDownloadId);
PreferenceManager.getDefaultSharedPreferences(mContext).edit()
.putString(PREF_INSTALLING_AB_ID, mDownloadId)
.apply();
return true;
}
public boolean reconnect() {
if (!isInstallingUpdate(mContext)) {
Log.e(TAG, "reconnect: Not installing any update");
return false;
}
mReconnecting = true;
mDownloadId = PreferenceManager.getDefaultSharedPreferences(mContext)
.getString(PREF_INSTALLING_AB_ID, null);
mUpdateEngine = new UpdateEngine();
// We will get a status notification as soon as we are connected
return mUpdateEngine.bind(mUpdateEngineCallback);
}
private void installationDone(boolean needsReboot) {
PreferenceManager.getDefaultSharedPreferences(mContext).edit()
.putBoolean(PREF_NEEDS_REBOOT, needsReboot)
.remove(PREF_INSTALLING_AB_ID)
.apply();
}
public boolean cancel() {
if (!isInstallingUpdate(mContext)) {
Log.e(TAG, "cancel: Not installing any update");
return false;
}
if (mUpdateEngine == null) {
Log.e(TAG, "Not connected to update engine");
return false;
}
mUpdateEngine.cancel();
installationDone(false);
mUpdaterController.getActualUpdate(mDownloadId)
.setStatus(UpdateStatus.INSTALLATION_CANCELLED);
mUpdaterController.notifyUpdateChange(mDownloadId);
return true;
}
}
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