com.bccs.bsecure.SmsBroadcastReceiver.java Source code

Introduction

Here is the source code for com.bccs.bsecure.SmsBroadcastReceiver.java

Source

package com.bccs.bsecure;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.support.v4.content.LocalBroadcastManager;

/*
 * This file is part of Bsecure. A open source, freely available, SMS encryption app.
 * Copyright (C) 2015 Dr Kevin Coogan, Shane Nalezyty, Lucas Burdell
 * <p>
 * Bsecure 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.
 * <p>
 * Bsecure 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.
 * <p>
 * You should have received a copy of the GNU General Public License
 * along with Bsecure.  If not, see <http://www.gnu.org/licenses/>.
 */

/*
 * Created by traci.kamp on 10/27/2014.
Catches incoming SMS messages displays a Toast message
containing sender phone number and message text.
    
 * Modified by traci.kamp on 11/3/2014.
Now checks incoming SMS messages for a prepended sequence
of characters ( -&*&- ) and performs decryption of the
message if the characters are found (first removes the
character sequence).
    
 * Modified by traci.kamp on 11/10/2014
Design changes require application restructure. Changes
to this file are not immediately apparent; seems
that changes will likely be small and centered on
efficiency rather than a major overhaul. If major
changes are necessary, the cipher functions will likely
be relocated to a specialized java file. Base64 jar
files are still needed for this project.
    
 * Modified by lucas.burdell on 6/5/2015.
Message unpacking and decryption migrated to handleMessage file.
Notifications are now built by this class. This class tracks
the most recentNumber received and notifications will display the
most recent message. Taping the notification brings user to the conversation
of the most recently received message.
    
 * Modified by lucas.burdell on 6/12/2015
Added handle for outgoing messages sent by other applications to appear in conversation as well.
This is so if you send messages via the android messenger app it will appear in conversation in
BSecure.
 */

public class SmsBroadcastReceiver extends BroadcastReceiver {
    private static final String SMS_RECEIVED = "android.provider.Telephony.SMS_RECEIVED";
    private static final String SMS_SENT = "android.provider.Telephony.SMS_SENT";

    public static String recentNumber = "5556";
    public static long recentID = 0;

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(SMS_RECEIVED))
            handleIncomingMessage(intent, context);
        if (intent.getAction().equals(SMS_SENT))
            handleOutgoingMessage(intent, context);
    }

    private void addReceivedMessageToDatabase(MyMessage message, Context context) {
        ConversationManager.ConversationHelper helper = ConversationManager.getConversation(context,
                message.getId());
        helper.addMessage(message);
    }

    public void handleOutgoingMessage(Intent intent, Context context) {
        MyMessage msg = HandleMessage.handleOutgoingMessage(intent);
        if (msg != null) {
            addReceivedMessageToDatabase(msg, context);
        }
    }

    public void handleIncomingMessage(Intent intent, Context context) {
        MyMessage msg = HandleMessage.handleIncomingMessage(intent, context);
        if (msg != null) {
            if (msg.is_encrypted() || msg.isDHKey())
                abortBroadcast();
            if (!msg.isDHKey()) {
                addReceivedMessageToDatabase(msg, context);
                Intent receivedMSG = new Intent("com.bccs.bsecure.msgReceived");
                receivedMSG.putExtra("contactid", msg.getId());
                recentNumber = msg.get_number();
                recentID = msg.getId();
                MessageReceivedNotification.cancel(context); //cancel old message
                MessageReceivedNotification.notify(context, msg.get_number(), msg.getBody());
                LocalBroadcastManager.getInstance(context).sendBroadcast(receivedMSG);
            } else {
                Intent receivedMSG = new Intent("com.bccs.bsecure.msgReceived_DH");
                receivedMSG.putExtra("body", msg.getBody());
                receivedMSG.putExtra("number", msg.get_number());
                LocalBroadcastManager.getInstance(context).sendBroadcast(receivedMSG);
            }
        }

    }

}