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Android防火墙+流量统计代码

阅读量：5977 次

发布时间：2019-06-20

本文共 10585 字，大约阅读时间需要 35 分钟。

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BroadcastReceiver模块

用于监听开机信息并初始化和启动服务

[java]

package zy.dnh;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.widget.Toast;

publicclass getpowerinfo extends BroadcastReceiver{

FileOutputStream out;

finalpublic String ONPATH = "/data/data/zy.dnh/on.txt";

@Override

publicvoid onReceive(Context context, Intent intent) {

// TODO Auto-generated method stub

if(intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)){

Intent bootActivityIntent=new Intent(context,mService1.class);//启动服务

bootActivityIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

writefile("0,0,0,0,0,0,0,0,0,0,0,0",ONPATH);

context.startService(bootActivityIntent);

Toast.makeText(context, "Netcounter service has been lauched", Toast.LENGTH_LONG).show();

Api.applySavedIptablesRules(context, false);//应用防火墙规则

Toast.makeText(context, "Wall rules have been lauched", Toast.LENGTH_LONG).show();

}

}

publicvoid writefile(String str,String path )

{

File file;

try {

//创建文件

file = new File(path);

file.createNewFile();

//打开文件file的OutputStream

out = new FileOutputStream(file);

String infoToWrite = str;

//将字符串转换成byte数组写入文件

out.write(infoToWrite.getBytes());

//关闭文件file的OutputStream

out.close();

} catch (IOException e) {

//将出错信息打印到Logcat

}

mService1模块

后台服务，用于维护流量日志

[java]

publicclass mService1 extends Service

{

private Handler objHandler = new Handler();

privateint intCounter=0;

privateint mHour;

privateint mMinute;

privateint mYear;

privateint mMonth;

privateint mDay;

private String mdate;

finalpublic String DEV_FILE = "/proc/self/net/dev";//系统流量文件

String[] ethdata={
"0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0"};

String[] gprsdata={
"0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0"};

String[] wifidata={
"0","0","0","0","0","0","0","0","0","0","0","0","0","0","0","0"};

String data="0,0,0,0,0,0,0,0,0,0,0,0";//对应on.txt里面的格式

final String ETHLINE=" eth0";//以太网信息所在行

final String GPRSLINE="rmnet0";

final String WIFILINE="tiwlan0";

final String TEXT_ENCODING = "UTF-8";

finalpublic String ONPATH = "/data/data/zy.dnh/on.txt";

finalpublic String LOGPATH = "/data/data/zy.dnh/log.txt";

private Runnable mTasks = new Runnable()

{

publicvoid run()//运行该服务执行此函数

{

refresh();

intCounter++;

// DisplayToast("Counter:"+Integer.toString(intCounter));

objHandler.postDelayed(mTasks, 30000);//每3000毫秒执行一次

}

};

@Override

publicvoid onStart(Intent intent, int startId)

{

// TODO Auto-generated method stub

//writefile("0,0,0,0,0,0,0,0,0,0,0,0",ONPATH);//每次启动服务初始化onpath

objHandler.postDelayed(mTasks, 0);

super.onStart(intent, startId);

}

@Override

publicvoid onCreate()

{

// TODO Auto-generated method stub

super.onCreate();

}

@Override

public IBinder onBind(Intent intent)

{

// TODO Auto-generated method stub

returnnull;

}

@Override

publicvoid onDestroy()

{

// TODO Auto-generated method stub

/* */

objHandler.removeCallbacks(mTasks);

super.onDestroy();

}

publicvoid DisplayToast(String str)

{

Toast.makeText(this,str,Toast.LENGTH_SHORT).show();

}

publicvoid readdev()

{

FileReader fstream = null;

try {

fstream = new FileReader(DEV_FILE);

}

catch (FileNotFoundException e) {

DisplayToast("Could not read " + DEV_FILE);

}

BufferedReader in = new BufferedReader(fstream, 500);

String line;

String[] segs;

String[] netdata;

int count=0;

int k;

int j;

try {

while ((line = in.readLine()) != null) {

segs = line.trim().split(":");

if(line.startsWith(ETHLINE))

{

netdata=segs[1].trim().split(" ");

for(k=0,j=0;k<netdata.length;k++)

{

if(netdata[k].length()>0)

{

ethdata[j]=netdata[k];

j++;

}

}

}

elseif(line.startsWith(GPRSLINE))

{

netdata=segs[1].trim().split(" ");

for(k=0,j=0;k<netdata.length;k++)

{

if(netdata[k].length()>0)

{

gprsdata[j]=netdata[k];

j++;

}

}

}

elseif(line.startsWith(WIFILINE))

{

netdata=segs[1].trim().split(" ");

for(k=0,j=0;k<netdata.length;k++)

{

if(netdata[k].length()>0)

{

wifidata[j]=netdata[k];

j++;

}

}

}

count++;

}

fstream.close();

}

catch (IOException e) {

DisplayToast(e.toString());

}

}

public String getinfo(String path)

{

File file;

String str="";

FileInputStream in;

try{

//打开文件file的InputStream

file = new File(path);

in = new FileInputStream(file);

//将文件内容全部读入到byte数组

int length = (int)file.length();

byte[] temp = newbyte[length];

in.read(temp, 0, length);

//将byte数组用UTF-8编码并存入display字符串中

str = EncodingUtils.getString(temp,TEXT_ENCODING);

//关闭文件file的InputStream

in.close();

}

catch (IOException e) {

DisplayToast(e.toString());

}

return str;

}

publicvoid writefile(String str,String path )

{

File file;

FileOutputStream out;

try {

//创建文件

file = new File(path);

file.createNewFile();

//打开文件file的OutputStream

out = new FileOutputStream(file);

String infoToWrite = str;

//将字符串转换成byte数组写入文件

out.write(infoToWrite.getBytes());

//关闭文件file的OutputStream

out.close();

} catch (IOException e) {

//将出错信息打印到Logcat

DisplayToast(e.toString());

}

}

publicvoid refresh()

{

readdev();//读取本次开机之后直到当前系统的总流量

data=ethdata[0]+","+ethdata[1]+","+ethdata[8]+","+ethdata[9]+","

+gprsdata[0]+","+gprsdata[1]+","+gprsdata[8]+","+gprsdata[9]+","

+wifidata[0]+","+wifidata[1]+","+wifidata[8]+","+wifidata[9];

String onstr=getinfo(ONPATH);//读取on.txt记录到onstr里

String ondata[]=onstr.split(",");//将onstr各项分离放到ondata里

//计算增量

int [] delta=newint [12];

delta[0]=Integer.parseInt(ethdata[0])-Integer.parseInt(ondata[0]);

delta[1]=Integer.parseInt(ethdata[1])-Integer.parseInt(ondata[1]);

delta[2]=Integer.parseInt(ethdata[8])-Integer.parseInt(ondata[2]);

delta[3]=Integer.parseInt(ethdata[9])-Integer.parseInt(ondata[3]);

delta[4]=Integer.parseInt(gprsdata[0])-Integer.parseInt(ondata[4]);

delta[5]=Integer.parseInt(gprsdata[1])-Integer.parseInt(ondata[5]);

delta[6]=Integer.parseInt(gprsdata[8])-Integer.parseInt(ondata[6]);

delta[7]=Integer.parseInt(gprsdata[9])-Integer.parseInt(ondata[7]);

delta[8]=Integer.parseInt(wifidata[0])-Integer.parseInt(ondata[8]);

delta[9]=Integer.parseInt(wifidata[1])-Integer.parseInt(ondata[9]);

delta[10]=Integer.parseInt(wifidata[8])-Integer.parseInt(ondata[10]);

delta[11]=Integer.parseInt(wifidata[9])-Integer.parseInt(ondata[11]);

//读取log.txt

//获取当前时间

final Calendar c = Calendar.getInstance();

mYear = c.get(Calendar.YEAR); //获取当前年份

mMonth = c.get(Calendar.MONTH)+1;//获取当前月份

mDay = c.get(Calendar.DAY_OF_MONTH);//获取当前月份的日期号码

mHour = c.get(Calendar.HOUR_OF_DAY);//获取当前的小时数

mMinute = c.get(Calendar.MINUTE);//获取当前的分钟数

mdate=mYear+"-"+mMonth+"-"+mDay;

String text=getinfo(LOGPATH);//将log.txt的内容读到text字符串中

String [] line=text.split("/n");

String today=line[line.length-1];//获得今日已记录流量

String [] beToday=today.split(",");

//检查文件最后一行是否为今天的流量记录信息

if(!beToday[0].equals(mdate))//

//判断今日流量是否已经记录,如果今日流量没有记录

{

text=text+mdate+",0,0,0,0,0,0,0,0,0,0,0,0/n";

writefile(text,LOGPATH);

line=text.split("/n");

today=line[line.length-1];//获得今日已记录流量

beToday=today.split(",");

}

int i;

//处理今日流量

int [] newTodaydata=newint [12];//表示今日流量

String newtoday=mdate;

for(i=0;i<=11;i++)//更新今日流量

{

newTodaydata[i]=Integer.parseInt(beToday[i+1])+delta[i];

newtoday=newtoday+","+newTodaydata[i];

}

newtoday=newtoday+"/n";

String [] beTotal=line[0].split(",");

int [] newTotaldata=newint [12];//表示总流量数值

//更新第一行

String newtotal="total";

for(i=0;i<=11;i++)//更新今日流量和总流量

{

newTotaldata[i]=Integer.parseInt(beTotal[i+1])+delta[i];//总流量数值+delta[i]更新

newtotal=newtotal+","+newTotaldata[i];

}

newtotal= newtotal+"/n";

//处理中间不变的部分

String before="";//before为之前的从第1行到昨天的流量记录

for(i=1;i<=line.length-2;i++)

before=before+line[i]+"/n";//代表中间不变的部分

String newlog=newtotal+before+newtoday;

writefile(data,ONPATH);//更新流量记录

writefile(newlog,LOGPATH);//更新log*/

}

}

应用iptable规则模块，通过运行iptable脚本来实现iptable规则的应用

[c-sharp]

privatestatic boolean applyIptablesRulesImpl(Context ctx, List<Integer> uids, boolean showErrors) {

if (ctx == null) {

returnfalse;

}

final SharedPreferences prefs = ctx.getSharedPreferences(PREFS_NAME, 0);

final boolean whitelist = prefs.getString(PREF_MODE, MODE_WHITELIST).equals(MODE_WHITELIST);

boolean wifi = false; // Wi-fi selected ?

final String itfs = prefs.getString(PREF_ITFS, ITF_3G);

String itfFilter;

if (itfs.indexOf("|") != -1) {

itfFilter = ""; // Block all interfaces

wifi = true;

} elseif (itfs.indexOf(ITF_3G) != -1) {

itfFilter = "-o rmnet+";;

// Block all rmnet interfaces

} else {

itfFilter = "-o tiwlan+";;

// Block all tiwlan interfaces

wifi = true;

}

final StringBuilder script = new StringBuilder();

try {

int code;

script.append("iptables -F || exit/n");

final String targetRule = (whitelist ? "ACCEPT" : "REJECT");

if (whitelist && wifi) {

// When "white listing" Wi-fi, we need ensure that the dhcp and wifi users are allowed

int uid = android.os.Process.getUidForName("dhcp");

if (uid != -1) script.append("iptables -A OUTPUT "

+ itfFilter + " -m owner --uid-owner " + uid + " -j ACCEPT || exit/n");

uid = android.os.Process.getUidForName("wifi");

if (uid != -1) script.append("iptables -A OUTPUT " + itfFilter + " -m owner --uid-owner " + uid + " -j ACCEPT || exit/n"); }

for (Integer uid : uids) {

script.append("iptables -A OUTPUT " + itfFilter

+ " -m owner --uid-owner " + uid + " -j " + targetRule + " || exit/n");

}

if (whitelist) {

script.append("iptables -A OUTPUT " + itfFilter + " -j REJECT || exit/n");

}

StringBuilder res = new StringBuilder();

code = runScriptAsRoot(script.toString(), res);

if (showErrors && code != 0) {

String msg = res.toString();

Log.e("DroidWall", msg);

// Search for common error messages

if (msg.indexOf("Couldn't find match `owner'") != -1 || msg.indexOf("no chain/target match") != -1) {

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.");

} else {

// Remove unnecessary help message from output

if (msg.indexOf("/nTry `iptables -h' or 'iptables --help' for more information.") != -1) {

msg = msg.replace("/nTry `iptables -h' or 'iptables --help' for more information.", "");

}

// Try `iptables -h' or 'iptables --help' for more information.

alert(ctx, "Error applying iptables rules. Exit code: " + code + "/n/n" + msg.trim());

}

} else {

returntrue;

}

} catch (Exception e) {

if (showErrors) alert(ctx, "error refreshing iptables: " + e);

}

returnfalse;

}

【转】http://blog.csdn.net/Zengyangtech/article/details/5638604

转载于:https://blog.51cto.com/8857113/1409051

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