anotherim/src/eu/siacs/conversations/xmpp/jingle/SocksConnection.java

package eu.siacs.conversations.xmpp.jingle;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;

import eu.siacs.conversations.utils.CryptoHelper;

import android.util.Log;

public class SocksConnection {

	private JingleConnection jingleConnection;
	private Socket socket;
	private String host;
	private String jid;
	private int port;
	private boolean isProxy = false;
	private String destination;
	private OutputStream outputStream;

	public SocksConnection(JingleConnection jingleConnection, String host,
			String jid, int port, String type) {
		this.jingleConnection = jingleConnection;
		this.host = host;
		this.jid = jid;
		this.port = port;
		this.isProxy = "proxy".equalsIgnoreCase(type);
		try {
			MessageDigest mDigest = MessageDigest.getInstance("SHA-1");
			StringBuilder destBuilder = new StringBuilder();
			destBuilder.append(jingleConnection.getSessionId());
			destBuilder.append(jingleConnection.getInitiator());
			destBuilder.append(jingleConnection.getResponder());
			mDigest.reset();
			this.destination = CryptoHelper.bytesToHex(mDigest
					.digest(destBuilder.toString().getBytes()));
			Log.d("xmppService", "host=" + host + ", port=" + port
					+ ", destination: " + destination);
		} catch (NoSuchAlgorithmException e) {

		}
	}

	public boolean connect() {
		try {
			this.socket = new Socket(this.host, this.port);
			InputStream is = socket.getInputStream();
			this.outputStream = socket.getOutputStream();
			byte[] login = { 0x05, 0x01, 0x00 };
			byte[] expectedReply = { 0x05, 0x00 };
			byte[] reply = new byte[2];
			this.outputStream.write(login);
			is.read(reply);
			if (Arrays.equals(reply, expectedReply)) {
				String connect = "" + '\u0005' + '\u0001' + '\u0000' + '\u0003'
						+ '\u0028' + this.destination + '\u0000' + '\u0000';
				this.outputStream.write(connect.getBytes());
				byte[] result = new byte[2];
				is.read(result);
				int status = result[0];
				return (status == 0);
			} else {
				socket.close();
				return false;
			}
		} catch (UnknownHostException e) {
			return false;
		} catch (IOException e) {
			return false;
		}
	}

	public void send(final JingleFile file, final OnFileTransmitted callback) {
		new Thread(new Runnable() {
			
			@Override
			public void run() {
				FileInputStream fileInputStream = null;
				try {
					MessageDigest digest = MessageDigest.getInstance("SHA-1");
					digest.reset();
					fileInputStream = new FileInputStream(file);
					int count;
					byte[] buffer = new byte[8192];
					while ((count = fileInputStream.read(buffer)) > 0) {
						outputStream.write(buffer, 0, count);
						digest.update(buffer, 0, count);
					}
					outputStream.flush();
					file.setSha1Sum(CryptoHelper.bytesToHex(digest.digest()));
					if (callback!=null) {
						callback.onFileTransmitted(file);
					}
				} catch (FileNotFoundException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (NoSuchAlgorithmException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} finally {
					try {
						if (fileInputStream != null) {
							fileInputStream.close();
						}
					} catch (IOException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}
			}
		}).start();
		
	}

	public boolean isProxy() {
		return this.isProxy;
	}

	public String getJid() {
		return this.jid;
	}

	public void disconnect() {
		if (this.socket!=null) {
			try {
				this.socket.close();
				Log.d("xmppService","cloesd socket with "+this.host);
			} catch (IOException e) {
				Log.d("xmppService","error closing socket with "+this.host);
			}
		}
	}
}