/* * 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.content.Context; import android.content.DialogInterface; import android.net.IConnectivityManager; import android.os.Handler; import android.os.Message; import android.os.ServiceManager; import android.os.SystemClock; import android.os.UserHandle; import android.util.Log; import android.view.View; import android.widget.TextView; import com.android.internal.app.AlertActivity; import com.android.internal.net.VpnConfig; import java.io.DataInputStream; import java.io.FileInputStream; public class ManageDialog extends AlertActivity implements DialogInterface.OnClickListener, Handler.Callback { private static final String TAG = "VpnManage"; private VpnConfig mConfig; private IConnectivityManager mService; private TextView mDuration; private TextView mDataTransmitted; private TextView mDataReceived; private boolean mDataRowsHidden; private Handler mHandler; @Override protected void onResume() { super.onResume(); if (getCallingPackage() != null) { Log.e(TAG, getCallingPackage() + " cannot start this activity"); finish(); return; } try { mService = IConnectivityManager.Stub.asInterface( ServiceManager.getService(Context.CONNECTIVITY_SERVICE)); mConfig = mService.getVpnConfig(UserHandle.myUserId()); // mConfig can be null if we are a restricted user, in that case don't show this dialog if (mConfig == null) { finish(); return; } View view = View.inflate(this, R.layout.manage, null); if (mConfig.session != null) { ((TextView) view.findViewById(R.id.session)).setText(mConfig.session); } mDuration = (TextView) view.findViewById(R.id.duration); mDataTransmitted = (TextView) view.findViewById(R.id.data_transmitted); mDataReceived = (TextView) view.findViewById(R.id.data_received); mDataRowsHidden = true; if (mConfig.legacy) { mAlertParams.mTitle = getText(R.string.legacy_title); } else { mAlertParams.mTitle = VpnConfig.getVpnLabel(this, mConfig.user); } if (mConfig.configureIntent != null) { mAlertParams.mPositiveButtonText = getText(R.string.configure); mAlertParams.mPositiveButtonListener = this; } mAlertParams.mNeutralButtonText = getText(R.string.disconnect); mAlertParams.mNeutralButtonListener = this; mAlertParams.mNegativeButtonText = getText(android.R.string.cancel); mAlertParams.mNegativeButtonListener = this; mAlertParams.mView = view; setupAlert(); if (mHandler == null) { mHandler = new Handler(this); } mHandler.sendEmptyMessage(0); } catch (Exception e) { Log.e(TAG, "onResume", e); finish(); } } @Override protected void onPause() { super.onPause(); if (!isFinishing()) { finish(); } } @Override public void onClick(DialogInterface dialog, int which) { try { if (which == DialogInterface.BUTTON_POSITIVE) { mConfig.configureIntent.send(); } else if (which == DialogInterface.BUTTON_NEUTRAL) { final int myUserId = UserHandle.myUserId(); if (mConfig.legacy) { mService.prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, myUserId); } else { mService.prepareVpn(mConfig.user, VpnConfig.LEGACY_VPN, myUserId); } } } catch (Exception e) { Log.e(TAG, "onClick", e); finish(); } } @Override public boolean handleMessage(Message message) { mHandler.removeMessages(0); if (!isFinishing()) { if (mConfig.startTime != -1) { long seconds = (SystemClock.elapsedRealtime() - mConfig.startTime) / 1000; mDuration.setText(String.format("%02d:%02d:%02d", seconds / 3600, seconds / 60 % 60, seconds % 60)); } String[] numbers = getNumbers(); if (numbers != null) { // First unhide the related data rows. if (mDataRowsHidden) { findViewById(R.id.data_transmitted_row).setVisibility(View.VISIBLE); findViewById(R.id.data_received_row).setVisibility(View.VISIBLE); mDataRowsHidden = false; } // [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])); } mHandler.sendEmptyMessageDelayed(0, 1000); } return true; } private String[] getNumbers() { DataInputStream in = null; try { // See dev_seq_printf_stats() in net/core/dev.c. in = new DataInputStream(new FileInputStream("/proc/net/dev")); String prefix = mConfig.interfaze + ':'; while (true) { String line = in.readLine().trim(); if (line.startsWith(prefix)) { String[] numbers = line.substring(prefix.length()).split(" +"); for (int i = 1; i < 17; ++i) { if (!numbers[i].equals("0")) { return numbers; } } break; } } } catch (Exception e) { // ignore } finally { try { in.close(); } catch (Exception e) { // ignore } } return null; } }