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package eu.siacs.conversations.xmpp.jingle;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
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 eu.siacs.conversations.xml.Element;
import android.util.Log;
import android.widget.Button;
public class SocksConnection {
private JingleCandidate candidate;
private String destination;
private OutputStream outputStream;
private InputStream inputStream;
private boolean isEstablished = false;
protected Socket socket;
public SocksConnection(JingleConnection jingleConnection, JingleCandidate candidate) {
this.candidate = candidate;
try {
MessageDigest mDigest = MessageDigest.getInstance("SHA-1");
StringBuilder destBuilder = new StringBuilder();
destBuilder.append(jingleConnection.getSessionId());
if (candidate.isOurs()) {
destBuilder.append(jingleConnection.getAccountJid());
destBuilder.append(jingleConnection.getCounterPart());
} else {
destBuilder.append(jingleConnection.getCounterPart());
destBuilder.append(jingleConnection.getAccountJid());
}
mDigest.reset();
this.destination = CryptoHelper.bytesToHex(mDigest
.digest(destBuilder.toString().getBytes()));
} catch (NoSuchAlgorithmException e) {
}
}
public void connect(final OnSocksConnection callback) {
new Thread(new Runnable() {
@Override
public void run() {
try {
socket = new Socket(candidate.getHost(), candidate.getPort());
inputStream = socket.getInputStream();
outputStream = socket.getOutputStream();
byte[] login = { 0x05, 0x01, 0x00 };
byte[] expectedReply = { 0x05, 0x00 };
byte[] reply = new byte[2];
outputStream.write(login);
inputStream.read(reply);
if (Arrays.equals(reply, expectedReply)) {
String connect = "" + '\u0005' + '\u0001' + '\u0000' + '\u0003'
+ '\u0028' + destination + '\u0000' + '\u0000';
outputStream.write(connect.getBytes());
byte[] result = new byte[2];
inputStream.read(result);
int status = result[1];
if (status == 0) {
Log.d("xmppService", "established connection with "+candidate.getHost()+":"+candidate.getPort()+ "/" + destination);
isEstablished = true;
callback.established();
} else {
callback.failed();
}
} else {
socket.close();
callback.failed();
}
} catch (UnknownHostException e) {
callback.failed();
} catch (IOException e) {
callback.failed();
}
}
}).start();
}
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 void receive(final JingleFile file, final OnFileTransmitted callback) {
new Thread(new Runnable() {
@Override
public void run() {
try {
MessageDigest digest = MessageDigest.getInstance("SHA-1");
digest.reset();
inputStream.skip(45);
file.getParentFile().mkdirs();
file.createNewFile();
FileOutputStream fileOutputStream = new FileOutputStream(file);
long remainingSize = file.getExpectedSize();
byte[] buffer = new byte[8192];
int count = buffer.length;
while(remainingSize > 0) {
Log.d("xmppService","remaning size:"+remainingSize);
if (remainingSize<=count) {
count = (int) remainingSize;
}
count = inputStream.read(buffer, 0, count);
if (count==-1) {
Log.d("xmppService","end of stream");
} else {
fileOutputStream.write(buffer, 0, count);
digest.update(buffer, 0, count);
remainingSize-=count;
}
}
fileOutputStream.flush();
fileOutputStream.close();
file.setSha1Sum(CryptoHelper.bytesToHex(digest.digest()));
Log.d("xmppService","transmitted filename was: "+file.getAbsolutePath());
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();
}
}
}).start();
}
public boolean isProxy() {
return this.candidate.getType() == JingleCandidate.TYPE_PROXY;
}
public void disconnect() {
if (this.socket!=null) {
try {
this.socket.close();
Log.d("xmppService","cloesd socket with "+candidate.getHost()+":"+candidate.getPort());
} catch (IOException e) {
Log.d("xmppService","error closing socket with "+candidate.getHost()+":"+candidate.getPort());
}
}
}
public boolean isEstablished() {
return this.isEstablished;
}
public JingleCandidate getCandidate() {
return this.candidate;
}
}
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