/*
Copyright 2012-2013, Polyvi Inc. (http://polyvi.github.io/openxface)
This program is distributed under the terms of the GNU General Public License.
This file is part of xFace.
xFace is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
xFace is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with xFace. If not, see <http://www.gnu.org/licenses/>.
*/
package com.polyvi.xface.app.transferpolicy;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
import android.content.Context;
import android.content.SharedPreferences;
import com.polyvi.xface.ams.XAppList;
import com.polyvi.xface.app.XAppInfo;
import com.polyvi.xface.app.XApplicationCreator;
import com.polyvi.xface.app.XIApplication;
import com.polyvi.xface.configXml.XPreInstallPackageItem;
import com.polyvi.xface.core.XConfiguration;
import com.polyvi.xface.core.XISystemContext;
import com.polyvi.xface.event.XEvent;
import com.polyvi.xface.event.XEventType;
import com.polyvi.xface.event.XISystemEventReceiver;
import com.polyvi.xface.event.XSystemEventCenter;
import com.polyvi.xface.util.XAssetsFileUtils;
import com.polyvi.xface.util.XConstant;
import com.polyvi.xface.util.XCryptor;
import com.polyvi.xface.util.XLog;
import com.polyvi.xface.util.XStringUtils;
/**
* 预装app的转移策略
*/
public class XPreInstallAppsTransferPolicy implements XISystemEventReceiver {
private static final String CLASS_NAME = XPreInstallAppsTransferPolicy.class
.getSimpleName();
private static final long THREAD_SLEEP_TIME = 700;
public static final String APP_ID = "appId";
public static final String APP_SRC_ROOT = "srcRoot";
public static final String APP_MD5 = "md5";
/**
* 保存应用信息的文件名称, 应用的md5值. 例如: KEY:app1
* VALUE:{a00d766b012b8ffc2c00210245f65b3d}
*/
public static final String APPS_MD5_FILE_NAME = "apps_md5.pref";
private XAppList mAppList;
private XISystemContext mSysContext;
private Context mCtx;
private ArrayList<String> mMd5Array;
private XCryptor mCryptor;
public XPreInstallAppsTransferPolicy(XAppList list,
XISystemContext sysContext) {
mAppList = list;
mSysContext = sysContext;
mCtx = mSysContext.getContext();
mMd5Array = new ArrayList<String>();
mCryptor = new XCryptor();
registerSystemEventReceiver();
}
/**
* 注册转移预装app系统事件
*/
private void registerSystemEventReceiver() {
XSystemEventCenter.getInstance().registerReceiver(this,
XEventType.TRANSFER_COMPLETE);
XSystemEventCenter.getInstance().registerReceiver(this,
XEventType.MD5_INVALID);
}
/**
* 转移assets下的预装app
*/
public void transfer() {
List<XPreInstallPackageItem> preinstallPackages = XConfiguration
.getInstance().getPreinstallPackages();
int packagesSize = preinstallPackages.size();
ArrayList<String> appIds = new ArrayList<String>(packagesSize - 1);
for (int index = 1; index < packagesSize; index++) {
String appId = preinstallPackages.get(index).appId;
appIds.add(appId);
}
transferApp(appIds);
}
/**
* 转移对应appId的app
*
* @param appIds
*/
private void transferApp(final ArrayList<String> appIds) {
Thread transferThread = new Thread() {
public void run() {
if (null == appIds) {
XLog.e(CLASS_NAME, "Transfer app error!");
return;
}
for (String appId : appIds) {
// 已经转移完成，不需要再次转移
if (!mAppList.getAppById(appId).getAppInfo().getSrcRoot()
.contains(XConstant.ASSERT_PROTACAL)) {
XApplicationCreator
.toWebApp(mAppList.getAppById(appId))
.setAppSecurityPolicy(
new XTransferSecurityPolicy(mSysContext));
XLog.d(CLASS_NAME, "App was already transfered");
return;
}
XLog.d(CLASS_NAME, "Start transfer app");
// 拷贝预装app
String assetsAppPath = XConstant.APP_DATA_DIR_NAME
+ File.separator + appId;
String transferPath = XConfiguration.getInstance()
.getWorkDirectory() + appId;
File transferApp = new File(transferPath);
if (!transferApp.exists()) {
transferApp.mkdirs();
}
boolean ret = copyAssetsDirAndCalMd5(assetsAppPath,
transferPath);
if (ret) {
// 发送转移完成事件
HashMap<String, String> data = new HashMap<String, String>();
data.put(APP_ID, appId);
data.put(APP_SRC_ROOT, XConstant.FILE_SCHEME
+ transferPath);
data.put(APP_MD5, XTransferPolicyUtils.calAppMd5(
mMd5Array, mCryptor));
mMd5Array.clear();
XEvent evt = XEvent.createEvent(
XEventType.TRANSFER_COMPLETE, data);
XSystemEventCenter.getInstance().sendEventAsync(evt);
XLog.d(CLASS_NAME, "Transfer app finish");
}
}
}
};
transferThread.setPriority(Thread.MIN_PRIORITY);
transferThread.start();
}
@SuppressWarnings("unchecked")
@Override
public void onReceived(Context context, XEvent evt) {
if (evt.getType() == XEventType.TRANSFER_COMPLETE) {
HashMap<String, String> evtData = (HashMap<String, String>) evt
.getData();
String appId = evtData.get(APP_ID);
String md5 = evtData.get(APP_MD5);
if (null != md5
&& updateAppSrcRoot(appId, evtData.get(APP_SRC_ROOT))) {
recordAppMd5(appId, md5);
XApplicationCreator.toWebApp(mAppList.getAppById(appId))
.setAppSecurityPolicy(
new XTransferSecurityPolicy(mSysContext));
} else {
mSysContext.toast("System Md5 Security Policy Error");
exitEngine();
}
} else if (evt.getType() == XEventType.MD5_INVALID) {
String appId = (String) evt.getData();
String srcRoot = XConstant.ASSERT_PROTACAL
+ XConstant.APP_DATA_DIR_NAME + File.separator + appId;
if (!updateAppSrcRoot(appId, srcRoot)) {
mSysContext.toast("System Update App Info Error");
exitEngine();
return;
}
XApplicationCreator.toWebApp(mAppList.getAppById(appId))
.setAppSecurityPolicy(null);
// 开始转移app
ArrayList<String> appIds = new ArrayList<String>(1);
appIds.add(appId);
transferApp(appIds);
}
}
/**
* 更新app的srcRoot
*
* @param appId
* @param srcRoot
* @return 更新成功返回true，反之返回false
*/
private boolean updateAppSrcRoot(String appId, String srcRoot) {
if (XStringUtils.isEmptyString(appId)
|| XStringUtils.isEmptyString(srcRoot)) {
XLog.e(CLASS_NAME,
"Method updateAppSrcRoot: update app src root error!");
return false;
}
XIApplication app = mAppList.getAppById(appId);
if (null == app) {
XLog.e(CLASS_NAME,
"Method updateAppSrcRoot: app id not found in app list");
return false;
}
XAppInfo info = app.getAppInfo();
info.setSrcRoot(srcRoot);
mAppList.updateApp(info, app);
return true;
}
/**
* 退出引擎
*/
private void exitEngine() {
Timer timer = new Timer();
TimerTask task = new TimerTask() {
@Override
public void run() {
XEvent evt = XEvent.createEvent(XEventType.CLOSE_ENGINE);
XSystemEventCenter.getInstance().sendEventSync(evt);
}
};
timer.schedule(task, 5000);
}
/**
* 递归拷贝assets下指定的文件夹到指定路径，并求出app的md5值
*
* @param context
* @param srcDir
* @param desPath
* @return 拷贝成功返回true，反之返回false
*/
private boolean copyAssetsDirAndCalMd5(String srcDir, String desPath) {
String md5 = null;
try {
String childrens[] = mCtx.getAssets().list(srcDir);
for (String child : childrens) {
String srcFilePath = srcDir + File.separator + child;
if (XAssetsFileUtils.isFile(mCtx, srcFilePath)) {
// 为了缩短应用启动时间，拷贝每个文件的时候线程sleep一段时间
try {
Thread.sleep(THREAD_SLEEP_TIME);
} catch (InterruptedException e) {
e.printStackTrace();
XLog.e(CLASS_NAME,
"copyAssetsDirAndCalMd5: Thread sleep InterruptedException");
return false;
}
// 求出.html, .js, .htm文件的md5值
if (srcFilePath.endsWith(".html")
|| srcFilePath.endsWith(".js")
|| srcFilePath.endsWith(".htm")) {
md5 = mCryptor.calMD5Value(mCtx.getAssets().open(
srcFilePath));
mMd5Array.add(md5);
}
// 拷贝到目标路径
if (!XAssetsFileUtils.copyAssetsToTarget(mCtx, srcFilePath,
desPath + File.separator + child)) {
XLog.e(CLASS_NAME, "Copy assets: " + srcDir
+ File.separator + child + "failed");
return false;
}
} else {
copyAssetsDirAndCalMd5(srcFilePath, desPath
+ File.separator + child);
}
}
} catch (IOException e) {
XLog.e(CLASS_NAME, "Copy assets folder or calculate app md5 failed");
return false;
}
return true;
}
/**
* 记录应用md5值
*
* @param appId
* @param md5
*/
private void recordAppMd5(String appId, String md5) {
SharedPreferences preference = mCtx.getSharedPreferences(
APPS_MD5_FILE_NAME, Context.MODE_WORLD_READABLE
| Context.MODE_WORLD_WRITEABLE);
// 写入pref,这里不考虑是否之前已经存在，都进行覆写。因为之前存在的有可能被更改
SharedPreferences.Editor editor = preference.edit();
editor.putString(appId, md5);
editor.commit();
}
}