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/*
* Copyright (c) 2012-2016 Arne Schwabe
* Distributed under the GNU GPL v2 with additional terms. For full terms see the file doc/LICENSE.txt
*/
package de.blinkt.openvpn.core;
import android.app.Service;
import android.content.Intent;
import android.os.Build;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.ParcelFileDescriptor;
import android.os.RemoteCallbackList;
import android.os.RemoteException;
import android.support.annotation.Nullable;
import android.util.Pair;
import java.io.DataOutputStream;
import java.io.IOException;
import java.lang.ref.WeakReference;
/**
* Created by arne on 08.11.16.
*/
public class OpenVPNStatusService extends Service implements VpnStatus.LogListener, VpnStatus.ByteCountListener, VpnStatus.StateListener {
@Nullable
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
static final RemoteCallbackList<IStatusCallbacks> mCallbacks =
new RemoteCallbackList<>();
@Override
public void onCreate() {
super.onCreate();
VpnStatus.addLogListener(this);
VpnStatus.addByteCountListener(this);
VpnStatus.addStateListener(this);
mHandler.setService(this);
}
@Override
public void onDestroy() {
super.onDestroy();
VpnStatus.removeLogListener(this);
VpnStatus.removeByteCountListener(this);
VpnStatus.removeStateListener(this);
mCallbacks.kill();
}
private static final IServiceStatus.Stub mBinder = new IServiceStatus.Stub() {
@Override
public ParcelFileDescriptor registerStatusCallback(IStatusCallbacks cb) throws RemoteException {
final LogItem[] logbuffer = VpnStatus.getlogbuffer();
if (mLastUpdateMessage != null)
sendUpdate(cb, mLastUpdateMessage);
mCallbacks.register(cb);
try {
final ParcelFileDescriptor[] pipe = ParcelFileDescriptor.createPipe();
new Thread("pushLogs") {
@Override
public void run() {
DataOutputStream fd = new DataOutputStream(new ParcelFileDescriptor.AutoCloseOutputStream(pipe[1]));
try {
synchronized (VpnStatus.readFileLock) {
if (!VpnStatus.readFileLog) {
VpnStatus.readFileLock.wait();
}
}
} catch (InterruptedException e) {
VpnStatus.logException(e);
}
try {
for (LogItem logItem : logbuffer) {
byte[] bytes = logItem.getMarschaledBytes();
fd.writeShort(bytes.length);
fd.write(bytes);
}
// Mark end
fd.writeShort(0x7fff);
fd.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}.start();
return pipe[0];
} catch (IOException e) {
e.printStackTrace();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
throw new RemoteException(e.getMessage());
}
return null;
}
}
@Override
public void unregisterStatusCallback(IStatusCallbacks cb) throws RemoteException {
mCallbacks.unregister(cb);
}
@Override
public String getLastConnectedVPN() throws RemoteException {
return VpnStatus.getLastConnectedVPNProfile();
}
@Override
public void setCachedPassword(String uuid, int type, String password) {
PasswordCache.setCachedPassword(uuid, type, password);
}
@Override
public TrafficHistory getTrafficHistory() throws RemoteException {
return VpnStatus.trafficHistory;
}
};
@Override
public void newLog(LogItem logItem) {
Message msg = mHandler.obtainMessage(SEND_NEW_LOGITEM, logItem);
msg.sendToTarget();
}
@Override
public void updateByteCount(long in, long out, long diffIn, long diffOut) {
Message msg = mHandler.obtainMessage(SEND_NEW_BYTECOUNT, Pair.create(in, out));
msg.sendToTarget();
}
static UpdateMessage mLastUpdateMessage;
static class UpdateMessage {
public String state;
public String logmessage;
public ConnectionStatus level;
int resId;
UpdateMessage(String state, String logmessage, int resId, ConnectionStatus level) {
this.state = state;
this.resId = resId;
this.logmessage = logmessage;
this.level = level;
}
}
@Override
public void updateState(String state, String logmessage, int localizedResId, ConnectionStatus level) {
mLastUpdateMessage = new UpdateMessage(state, logmessage, localizedResId, level);
Message msg = mHandler.obtainMessage(SEND_NEW_STATE, mLastUpdateMessage);
msg.sendToTarget();
}
@Override
public void setConnectedVPN(String uuid) {
Message msg = mHandler.obtainMessage(SEND_NEW_CONNECTED_VPN, uuid);
msg.sendToTarget();
}
private static final OpenVPNStatusHandler mHandler = new OpenVPNStatusHandler();
private static final int SEND_NEW_LOGITEM = 100;
private static final int SEND_NEW_STATE = 101;
private static final int SEND_NEW_BYTECOUNT = 102;
private static final int SEND_NEW_CONNECTED_VPN = 103;
private static class OpenVPNStatusHandler extends Handler {
WeakReference<OpenVPNStatusService> service = null;
private void setService(OpenVPNStatusService statusService) {
service = new WeakReference<>(statusService);
}
@Override
public void handleMessage(Message msg) {
RemoteCallbackList<IStatusCallbacks> callbacks;
if (service == null || service.get() == null)
return;
callbacks = service.get().mCallbacks;
// Broadcast to all clients the new value.
final int N = callbacks.beginBroadcast();
for (int i = 0; i < N; i++) {
try {
IStatusCallbacks broadcastItem = callbacks.getBroadcastItem(i);
switch (msg.what) {
case SEND_NEW_LOGITEM:
broadcastItem.newLogItem((LogItem) msg.obj);
break;
case SEND_NEW_BYTECOUNT:
Pair<Long, Long> inout = (Pair<Long, Long>) msg.obj;
broadcastItem.updateByteCount(inout.first, inout.second);
break;
case SEND_NEW_STATE:
sendUpdate(broadcastItem, (UpdateMessage) msg.obj);
break;
case SEND_NEW_CONNECTED_VPN:
broadcastItem.connectedVPN((String) msg.obj);
break;
}
} catch (RemoteException e) {
// The RemoteCallbackList will take care of removing
// the dead object for us.
}
}
callbacks.finishBroadcast();
}
}
private static void sendUpdate(IStatusCallbacks broadcastItem,
UpdateMessage um) throws RemoteException {
broadcastItem.updateStateString(um.state, um.logmessage, um.resId, um.level);
}
}
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