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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 com.android.vpndialogs;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.net.IConnectivityManager;
import android.os.Handler;
import android.os.Message;
import android.os.ServiceManager;
import android.os.SystemClock;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.ImageView;
import android.widget.TextView;
import java.io.DataInputStream;
import java.io.FileInputStream;
public class ManageDialog extends Activity implements
DialogInterface.OnClickListener, DialogInterface.OnDismissListener {
private static final String TAG = "VpnManage";
private String mPackageName;
private String mInterfaceName;
private long mStartTime;
private IConnectivityManager mService;
private AlertDialog mDialog;
private TextView mDuration;
private TextView mDataTransmitted;
private TextView mDataReceived;
private Updater mUpdater;
@Override
protected void onResume() {
super.onResume();
try {
Intent intent = getIntent();
// TODO: Move constants into VpnBuilder.
mPackageName = intent.getStringExtra("packageName");
mInterfaceName = intent.getStringExtra("interfaceName");
mStartTime = intent.getLongExtra("startTime", 0);
mService = IConnectivityManager.Stub.asInterface(
ServiceManager.getService(Context.CONNECTIVITY_SERVICE));
PackageManager pm = getPackageManager();
ApplicationInfo app = pm.getApplicationInfo(mPackageName, 0);
View view = View.inflate(this, R.layout.manage, null);
String session = intent.getStringExtra("session");
if (session != null) {
((TextView) view.findViewById(R.id.session)).setText(session);
}
mDuration = (TextView) view.findViewById(R.id.duration);
mDataTransmitted = (TextView) view.findViewById(R.id.data_transmitted);
mDataReceived = (TextView) view.findViewById(R.id.data_received);
mDialog = new AlertDialog.Builder(this)
.setIcon(app.loadIcon(pm))
.setTitle(app.loadLabel(pm))
.setView(view)
.setPositiveButton(R.string.configure, this)
.setNeutralButton(R.string.disconnect, this)
.setNegativeButton(android.R.string.cancel, this)
.create();
mDialog.setOnDismissListener(this);
mDialog.show();
mUpdater = new Updater();
mUpdater.sendEmptyMessage(0);
} catch (Exception e) {
Log.e(TAG, "onResume", e);
finish();
}
}
@Override
protected void onPause() {
super.onPause();
if (mDialog != null) {
mDialog.setOnDismissListener(null);
mDialog.dismiss();
}
}
@Override
public void onClick(DialogInterface dialog, int which) {
try {
if (which == AlertDialog.BUTTON_POSITIVE) {
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setPackage(mPackageName);
startActivity(intent);
} else if (which == AlertDialog.BUTTON_NEUTRAL) {
mService.prepareVpn(mPackageName);
}
} catch (Exception e) {
Log.e(TAG, "onClick", e);
}
}
@Override
public void onDismiss(DialogInterface dialog) {
finish();
}
private class Updater extends Handler {
public void handleMessage(Message message) {
removeMessages(0);
if (mDialog.isShowing()) {
if (mStartTime != 0) {
long seconds = (SystemClock.elapsedRealtime() - mStartTime) / 1000;
mDuration.setText(String.format("%02d:%02d:%02d",
seconds / 3600, seconds / 60 % 60, seconds % 60));
}
String[] numbers = getStatistics();
if (numbers != null) {
// [1] and [2] are received data in bytes and packets.
mDataReceived.setText(getString(R.string.data_value_format,
numbers[1], numbers[2]));
// [9] and [10] are transmitted data in bytes and packets.
mDataTransmitted.setText(getString(R.string.data_value_format,
numbers[9], numbers[10]));
}
sendEmptyMessageDelayed(0, 1000);
}
}
}
private String[] getStatistics() {
DataInputStream in = null;
try {
// See dev_seq_printf_stats() in net/core/dev.c.
in = new DataInputStream(new FileInputStream("/proc/net/dev"));
String prefix = mInterfaceName + ':';
while (true) {
String line = in.readLine().trim();
if (line.startsWith(prefix)) {
String[] numbers = line.substring(prefix.length()).split(" +");
if (numbers.length == 17) {
return numbers;
}
break;
}
}
} catch (Exception e) {
// ignore
} finally {
try {
in.close();
} catch (Exception e) {
// ignore
}
}
return null;
}
}
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