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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package de.blinkt.openvpn;
import java.io.IOException;
import java.net.UnknownHostException;
import java.util.Arrays;
import android.app.PendingIntent;
import android.content.Intent;
import android.net.LocalSocket;
import android.net.LocalSocketAddress;
import android.net.VpnService;
import android.os.Handler;
import android.os.Message;
import android.os.ParcelFileDescriptor;
import android.util.Log;
import android.widget.Toast;
public class OpenVpnService extends VpnService implements Handler.Callback, Runnable {
private static final String TAG = "OpenVpnService";
private String[] mArgv;
private Handler mHandler;
private Thread mThread;
private ParcelFileDescriptor mInterface;
@Override
public void onRevoke() {
managmentCommand("signal SIGINT\n");
mThread=null;
stopSelf();
};
public void managmentCommand(String cmd) {
LocalSocket mgmtsocket;
try {
byte[] buffer = new byte[400];
mgmtsocket = new LocalSocket();
mgmtsocket.connect(new LocalSocketAddress(getCacheDir().getAbsolutePath() + "/" + "mgmtsocket",
LocalSocketAddress.Namespace.FILESYSTEM));
//mgmtsocket = new Dat("127.0.0.1",OpenVPNClient.MANAGMENTPORT));
//OutputStreamWriter outw = new OutputStreamWriter(mgmtsocket.getOutputStream());
mgmtsocket.getInputStream().read(buffer);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
}
//outw.write(cmd);
mgmtsocket.getOutputStream().write(cmd.getBytes());
//outw.flush();
try {
Thread.sleep(400);
} catch (InterruptedException e) {
}
mgmtsocket.close();
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// The handler is only used to show messages.
if (mHandler == null) {
mHandler = new Handler(this);
}
// Stop the previous session by interrupting the thread.
if (mThread != null) {
managmentCommand("signal SIGINT\n");
mThread.interrupt();
}
// Thread already running, reuse existing,
// Extract information from the intent.
String prefix = getPackageName();
mArgv = intent.getStringArrayExtra(prefix + ".ARGV");
// Start a new session by creating a new thread.
mThread = new Thread(this, "OpenVPNThread");
mThread.start();
if(intent.hasExtra(prefix +".PKCS12PASS"))
{
try {
String pkcs12password = intent.getStringExtra(prefix +".PKCS12PASS");
Thread.sleep(3000);
managmentCommand("password 'Private Key' " + pkcs12password + "\n");
} catch (InterruptedException e) {
}
}
if(intent.hasExtra(prefix +".USERNAME"))
{
try {
String user = managmentEscape(intent.getStringExtra(prefix +".USERNAME"));
String pw = managmentEscape(intent.getStringExtra(prefix +".PASSWORD"));
Thread.sleep(3000);
managmentCommand("username 'Auth' " + user+ "\n" +
"password 'Auth' " + pw + "\n");
} catch (InterruptedException e) {
}
}
return START_STICKY;
}
private String managmentEscape(String unescape) {
String escapedString = unescape.replace("\\", "\\\\");
escapedString = escapedString.replace("\"","\\\"");
escapedString = escapedString.replace("\n","\\n");
return '"' + escapedString + '"';
}
@Override
public void onDestroy() {
if (mThread != null) {
managmentCommand("signal SIGINT\n");
mThread.interrupt();
}
}
@Override
public boolean handleMessage(Message message) {
if (message != null) {
Toast.makeText(this, message.what, Toast.LENGTH_SHORT).show();
}
return true;
}
@Override
public synchronized void run() {
try {
Log.i(TAG, "Starting o");
OpenVPN.setCallback(this);
// We try to create the tunnel for several times. The better way
// is to work with ConnectivityManager, such as trying only when
// the network is avaiable. Here we just use a counter to keep
// things simple.
//for (int attempt = 0; attempt < 10; ++attempt) {
mHandler.sendEmptyMessage(R.string.connecting);
// Log argv
OpenVPN.logMessage(0, "argv:" , Arrays.toString(mArgv));
OpenVPN.startOpenVPNThreadArgs(mArgv);
// Sleep for a while. This also checks if we got interrupted.
Thread.sleep(3000);
//}
Log.i(TAG, "Giving up");
} catch (Exception e) {
Log.e(TAG, "Got " + e.toString());
} finally {
try {
mInterface.close();
} catch (Exception e) {
// ignore
}
mInterface = null;
mHandler.sendEmptyMessage(R.string.disconnected);
Log.i(TAG, "Exiting");
}
}
public ParcelFileDescriptor openTun(String localip) {
// FIXME: hardcoded assumptions
Builder builder = new Builder();
builder.addRoute("0.0.0.0", 0);
builder.addAddress(localip, 24 );
builder.addDnsServer("131.234.137.23");
builder.addSearchDomain("blinkt.de");
builder.setSession("OpenVPN - " + localip);
Intent intent = new Intent(getBaseContext(),LogWindow.class);
PendingIntent startLW = PendingIntent.getActivity(getApplicationContext(), 0, intent, 0);
builder.setConfigureIntent(startLW);
mInterface = builder.establish();
return mInterface;
}
}
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