首届 Google 暑期大学生博客分享大赛——2010 Andriod 篇
[java]view plaincopy
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package zy.dnh;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.widget.Toast;
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publicclass getpowerinfo extends BroadcastReceiver{
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FileOutputStream out;
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finalpublic String ONPATH = "/data/data/zy.dnh/on.txt";
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@Override
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publicvoid onReceive(Context context, Intent intent) {
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// TODO Auto-generated method stub
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if(intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)){
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Intent bootActivityIntent=new Intent(context,mService1.class);//启动服务
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bootActivityIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
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writefile("0,0,0,0,0,0,0,0,0,0,0,0",ONPATH);
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context.startService(bootActivityIntent);
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Toast.makeText(context, "Netcounter service has been lauched", Toast.LENGTH_LONG).show();
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Api.applySavedIptablesRules(context, false);//应用防火墙规则
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Toast.makeText(context, "Wall rules have been lauched", Toast.LENGTH_LONG).show();
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}
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}
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publicvoid writefile(String str,String path )
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{
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File file;
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try {
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//创建文件
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file = new File(path);
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file.createNewFile();
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//打开文件file的OutputStream
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out = new FileOutputStream(file);
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String infoToWrite = str;
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//将字符串转换成byte数组写入文件
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out.write(infoToWrite.getBytes());
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//关闭文件file的OutputStream
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out.close();
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} catch (IOException e) {
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//将出错信息打印到Logcat
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}
[java]view plaincopy
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publicclass mService1 extends Service
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{
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private Handler objHandler = new Handler();
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privateint intCounter=0;
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privateint mHour;
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privateint mMinute;
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privateint mYear;
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privateint mMonth;
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privateint mDay;
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private String mdate;
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finalpublic String DEV_FILE = "/proc/self/net/dev";//系统流量文件
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String[] ethdata={"0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0"};
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String[] gprsdata={"0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0"};
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String[] wifidata={"0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0"};
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String data="0,0,0,0,0,0,0,0,0,0,0,0";//对应on.txt里面的格式
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final String ETHLINE=" eth0";//以太网信息所在行
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final String GPRSLINE="rmnet0";
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final String WIFILINE="tiwlan0";
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final String TEXT_ENCODING = "UTF-8";
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finalpublic String ONPATH = "/data/data/zy.dnh/on.txt";
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finalpublic String LOGPATH = "/data/data/zy.dnh/log.txt";
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private Runnable mTasks = new Runnable()
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{
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publicvoid run()//运行该服务执行此函数
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{
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refresh();
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intCounter++;
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// DisplayToast("Counter:"+Integer.toString(intCounter));
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objHandler.postDelayed(mTasks, 30000);//每3000毫秒执行一次
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}
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};
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@Override
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publicvoid onStart(Intent intent, int startId)
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{
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// TODO Auto-generated method stub
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//writefile("0,0,0,0,0,0,0,0,0,0,0,0",ONPATH);//每次启动服务 初始化onpath
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objHandler.postDelayed(mTasks, 0);
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super.onStart(intent, startId);
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}
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@Override
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publicvoid onCreate()
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{
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// TODO Auto-generated method stub
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super.onCreate();
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}
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@Override
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public IBinder onBind(Intent intent)
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{
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// TODO Auto-generated method stub
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returnnull;
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}
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@Override
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publicvoid onDestroy()
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{
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// TODO Auto-generated method stub
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/* */
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objHandler.removeCallbacks(mTasks);
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super.onDestroy();
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}
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publicvoid DisplayToast(String str)
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{
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Toast.makeText(this,str,Toast.LENGTH_SHORT).show();
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}
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publicvoid readdev()
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{
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FileReader fstream = null;
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try {
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fstream = new FileReader(DEV_FILE);
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}
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catch (FileNotFoundException e) {
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DisplayToast("Could not read " + DEV_FILE);
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}
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BufferedReader in = new BufferedReader(fstream, 500);
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String line;
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String[] segs;
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String[] netdata;
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int count=0;
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int k;
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int j;
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try {
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while ((line = in.readLine()) != null) {
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segs = line.trim().split(":");
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if(line.startsWith(ETHLINE))
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{
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netdata=segs[1].trim().split(" ");
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for(k=0,j=0;k<netdata.length;k++)
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{
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if(netdata[k].length()>0)
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{
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ethdata[j]=netdata[k];
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j++;
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}
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}
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}
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elseif(line.startsWith(GPRSLINE))
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{
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netdata=segs[1].trim().split(" ");
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for(k=0,j=0;k<netdata.length;k++)
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{
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if(netdata[k].length()>0)
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{
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gprsdata[j]=netdata[k];
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j++;
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}
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}
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}
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elseif(line.startsWith(WIFILINE))
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{
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netdata=segs[1].trim().split(" ");
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for(k=0,j=0;k<netdata.length;k++)
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{
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if(netdata[k].length()>0)
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{
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wifidata[j]=netdata[k];
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j++;
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}
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}
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}
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count++;
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}
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fstream.close();
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}
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catch (IOException e) {
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DisplayToast(e.toString());
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}
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}
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public String getinfo(String path)
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{
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File file;
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String str="";
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FileInputStream in;
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try{
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//打开文件file的InputStream
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file = new File(path);
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in = new FileInputStream(file);
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//将文件内容全部读入到byte数组
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int length = (int)file.length();
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byte[] temp = newbyte[length];
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in.read(temp, 0, length);
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//将byte数组用UTF-8编码并存入display字符串中
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str = EncodingUtils.getString(temp,TEXT_ENCODING);
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//关闭文件file的InputStream
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in.close();
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}
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catch (IOException e) {
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DisplayToast(e.toString());
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}
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return str;
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}
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publicvoid writefile(String str,String path )
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{
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File file;
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FileOutputStream out;
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try {
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//创建文件
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file = new File(path);
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file.createNewFile();
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//打开文件file的OutputStream
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out = new FileOutputStream(file);
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String infoToWrite = str;
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//将字符串转换成byte数组写入文件
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out.write(infoToWrite.getBytes());
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//关闭文件file的OutputStream
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out.close();
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} catch (IOException e) {
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//将出错信息打印到Logcat
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DisplayToast(e.toString());
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}
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}
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publicvoid refresh()
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{
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readdev();//读取本次开机之后直到当前系统的总流量
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data=ethdata[0]+","+ethdata[1]+","+ethdata[8]+","+ethdata[9]+","
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+gprsdata[0]+","+gprsdata[1]+","+gprsdata[8]+","+gprsdata[9]+","
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+wifidata[0]+","+wifidata[1]+","+wifidata[8]+","+wifidata[9];
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String onstr=getinfo(ONPATH);//读取on.txt记录到onstr里
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String ondata[]=onstr.split(",");//将onstr各项分离 放到ondata里
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//计算增量
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int [] delta=newint [12];
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delta[0]=Integer.parseInt(ethdata[0])-Integer.parseInt(ondata[0]);
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delta[1]=Integer.parseInt(ethdata[1])-Integer.parseInt(ondata[1]);
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delta[2]=Integer.parseInt(ethdata[8])-Integer.parseInt(ondata[2]);
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delta[3]=Integer.parseInt(ethdata[9])-Integer.parseInt(ondata[3]);
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delta[4]=Integer.parseInt(gprsdata[0])-Integer.parseInt(ondata[4]);
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delta[5]=Integer.parseInt(gprsdata[1])-Integer.parseInt(ondata[5]);
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delta[6]=Integer.parseInt(gprsdata[8])-Integer.parseInt(ondata[6]);
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delta[7]=Integer.parseInt(gprsdata[9])-Integer.parseInt(ondata[7]);
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delta[8]=Integer.parseInt(wifidata[0])-Integer.parseInt(ondata[8]);
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delta[9]=Integer.parseInt(wifidata[1])-Integer.parseInt(ondata[9]);
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delta[10]=Integer.parseInt(wifidata[8])-Integer.parseInt(ondata[10]);
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delta[11]=Integer.parseInt(wifidata[9])-Integer.parseInt(ondata[11]);
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//读取log.txt
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//获取当前时间
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final Calendar c = Calendar.getInstance();
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mYear = c.get(Calendar.YEAR); //获取当前年份
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mMonth = c.get(Calendar.MONTH)+1;//获取当前月份
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mDay = c.get(Calendar.DAY_OF_MONTH);//获取当前月份的日期号码
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mHour = c.get(Calendar.HOUR_OF_DAY);//获取当前的小时数
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mMinute = c.get(Calendar.MINUTE);//获取当前的分钟数
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mdate=mYear+"-"+mMonth+"-"+mDay;
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String text=getinfo(LOGPATH);//将log.txt的内容读到text字符串中
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String [] line=text.split("/n");
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String today=line[line.length-1];//获得今日已记录流量
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String [] beToday=today.split(",");
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//检查文件最后一行是否为今天的流量记录信息
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if(!beToday[0].equals(mdate))//
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//判断今日流量是否已经记录,如果今日流量没有记录
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{
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text=text+mdate+",0,0,0,0,0,0,0,0,0,0,0,0/n";
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writefile(text,LOGPATH);
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line=text.split("/n");
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today=line[line.length-1];//获得今日已记录流量
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beToday=today.split(",");
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}
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int i;
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//处理今日流量
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int [] newTodaydata=newint [12];//表示今日流量
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String newtoday=mdate;
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for(i=0;i<=11;i++)//更新今日流量
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{
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newTodaydata[i]=Integer.parseInt(beToday[i+1])+delta[i];
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newtoday=newtoday+","+newTodaydata[i];
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}
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newtoday=newtoday+"/n";
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String [] beTotal=line[0].split(",");
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int [] newTotaldata=newint [12];//表示总流量数值
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//更新第一行
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String newtotal="total";
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for(i=0;i<=11;i++)//更新今日流量和总流量
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{
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newTotaldata[i]=Integer.parseInt(beTotal[i+1])+delta[i];//总流量数值+delta[i]更新
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newtotal=newtotal+","+newTotaldata[i];
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}
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newtotal= newtotal+"/n";
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//处理中间不变的部分
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String before="";//before为之前的从第1行到昨天的流量记录
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for(i=1;i<=line.length-2;i++)
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before=before+line[i]+"/n";//代表中间不变的部分
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String newlog=newtotal+before+newtoday;
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writefile(data,ONPATH);//更新流量记录
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writefile(newlog,LOGPATH);//更新log*/
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}
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}
[c-sharp]view plaincopy
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privatestatic boolean applyIptablesRulesImpl(Context ctx, List<Integer> uids, boolean showErrors) {
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if (ctx == null) {
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returnfalse;
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}
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final SharedPreferences prefs = ctx.getSharedPreferences(PREFS_NAME, 0);
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final boolean whitelist = prefs.getString(PREF_MODE, MODE_WHITELIST).equals(MODE_WHITELIST);
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boolean wifi = false; // Wi-fi selected ?
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final String itfs = prefs.getString(PREF_ITFS, ITF_3G);
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String itfFilter;
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if (itfs.indexOf("|") != -1) {
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itfFilter = ""; // Block all interfaces
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wifi = true;
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} elseif (itfs.indexOf(ITF_3G) != -1) {
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itfFilter = "-o rmnet+";;
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// Block all rmnet interfaces
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} else {
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itfFilter = "-o tiwlan+";;
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// Block all tiwlan interfaces
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wifi = true;
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}
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final StringBuilder script = new StringBuilder();
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try {
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int code;
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script.append("iptables -F || exit/n");
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final String targetRule = (whitelist ? "ACCEPT" : "REJECT");
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if (whitelist && wifi) {
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// When "white listing" Wi-fi, we need ensure that the dhcp and wifi users are allowed
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int uid = android.os.Process.getUidForName("dhcp");
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if (uid != -1) script.append("iptables -A OUTPUT "
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+ itfFilter + " -m owner --uid-owner " + uid + " -j ACCEPT || exit/n");
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uid = android.os.Process.getUidForName("wifi");
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if (uid != -1) script.append("iptables -A OUTPUT " + itfFilter + " -m owner --uid-owner " + uid + " -j ACCEPT || exit/n"); }
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for (Integer uid : uids) {
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script.append("iptables -A OUTPUT " + itfFilter
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+ " -m owner --uid-owner " + uid + " -j " + targetRule + " || exit/n");
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}
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if (whitelist) {
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script.append("iptables -A OUTPUT " + itfFilter + " -j REJECT || exit/n");
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}
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StringBuilder res = new StringBuilder();
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code = runScriptAsRoot(script.toString(), res);
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if (showErrors && code != 0) {
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String msg = res.toString();
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Log.e("DroidWall", msg);
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// Search for common error messages
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if (msg.indexOf("Couldn't find match `owner'") != -1 || msg.indexOf("no chain/target match") != -1) {
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alert(ctx, "Error applying iptables rules./nExit code: " + code + "/n/n" +"It seems your Linux kernel was not compiled with the netfilter /"owner/" module enabled, which is required for Droid Wall to work properly./n/n" +"You should check if there is an updated version of your Android ROM compiled with this kernel module.");
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} else {
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// Remove unnecessary help message from output
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if (msg.indexOf("/nTry `iptables -h' or 'iptables --help' for more information.") != -1) {
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msg = msg.replace("/nTry `iptables -h' or 'iptables --help' for more information.", "");
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}
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// Try `iptables -h' or 'iptables --help' for more information.
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alert(ctx, "Error applying iptables rules. Exit code: " + code + "/n/n" + msg.trim());
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}
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} else {
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returntrue;
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}
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} catch (Exception e) {
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if (showErrors) alert(ctx, "error refreshing iptables: " + e);
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}
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returnfalse;
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}
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