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/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
package org.libreoffice.impressremote.communication;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Random;
import org.libreoffice.impressremote.Globals;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;
/**
* Standard Network client. Connects to a server using Sockets.
*/
public class NetworkClient extends Client {
private static final int PORT = 1599;
private Socket mSocket;
private Intent mIntent;
private String mPin;
private Server mServer;
public NetworkClient(Server aServer,
CommunicationService aCommunicationService, Receiver aReceiver)
throws UnknownHostException, IOException {
super(aServer, aCommunicationService, aReceiver);
mServer = aServer;
mSocket = new Socket(mServer.getAddress(), PORT);
mInputStream = mSocket.getInputStream();
mReader = new BufferedReader(new InputStreamReader(mInputStream,
CHARSET));
mOutputStream = mSocket.getOutputStream();
// Pairing.
mPin = setupPin(mServer);
mIntent = new Intent(CommunicationService.MSG_PAIRING_STARTED);
mIntent.putExtra("PIN", mPin);
LocalBroadcastManager.getInstance(mCommunicationService).sendBroadcast(
mIntent);
// Send out
String aName = CommunicationService.getDeviceName(); // TODO: get the
// proper name
sendCommand("LO_SERVER_CLIENT_PAIR\n" + aName + "\n" + mPin + "\n\n");
}
private String setupPin(Server aServer) {
// Get settings
SharedPreferences aPreferences = mCommunicationService
.getSharedPreferences("sdremote_authorisedremotes",
android.content.Context.MODE_PRIVATE);
if (aPreferences.contains(aServer.getName())) {
return aPreferences.getString(aServer.getName(), "");
} else {
String aPin = generatePin();
Editor aEdit = aPreferences.edit();
aEdit.putString(aServer.getName(), aPin);
aEdit.commit();
return aPin;
}
}
private String generatePin() {
Random aRandom = new Random();
String aPin = "" + (aRandom.nextInt(9000) + 1000);
while (aPin.length() < 4) {
aPin = "0" + aPin; // Add leading zeros if necessary
}
return aPin;
}
@Override
public void closeConnection() {
try {
if (mSocket != null)
mSocket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void validating() throws IOException {
// Wait until we get the appropriate string back...
String aTemp = mReader.readLine();
if (aTemp == null) {
throw new IOException(
"End of stream reached before any data received.");
}
while (!aTemp.equals("LO_SERVER_SERVER_PAIRED")) {
if (aTemp.equals("LO_SERVER_VALIDATING_PIN")) {
// Broadcast that we need a pin screen.
mIntent = new Intent(
CommunicationService.STATUS_PAIRING_PINVALIDATION);
mIntent.putExtra("PIN", mPin);
mIntent.putExtra("SERVERNAME", mServer.getName());
LocalBroadcastManager.getInstance(mCommunicationService)
.sendBroadcast(mIntent);
while (mReader.readLine().length() != 0) {
// Read off empty lines
}
aTemp = mReader.readLine();
} else {
return;
}
}
mIntent = new Intent(CommunicationService.MSG_PAIRING_SUCCESSFUL);
LocalBroadcastManager.getInstance(mCommunicationService).sendBroadcast(
mIntent);
while (mReader.readLine().length() != 0) {
// Get rid of extra lines
Log.i(Globals.TAG, "NetworkClient: extra line");
}
Log.i(Globals.TAG, "NetworkClient: calling startListening");
startListening();
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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