ManageDialog.java revision e9107901ae264de4ff5603d3cfc63a03ca4117d4 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.vpndialogs;
18
19import android.app.Activity;
20import android.app.AlertDialog;
21import android.content.Context;
22import android.content.DialogInterface;
23import android.content.Intent;
24import android.content.pm.ApplicationInfo;
25import android.content.pm.PackageManager;
26import android.net.IConnectivityManager;
27import android.os.Handler;
28import android.os.Message;
29import android.os.ServiceManager;
30import android.os.SystemClock;
31import android.util.Log;
32import android.view.View;
33import android.widget.Button;
34import android.widget.CompoundButton;
35import android.widget.ImageView;
36import android.widget.TextView;
37
38import com.android.internal.net.VpnConfig;
39
40import java.io.DataInputStream;
41import java.io.FileInputStream;
42
43public class ManageDialog extends Activity implements Handler.Callback,
44        DialogInterface.OnClickListener, DialogInterface.OnDismissListener {
45    private static final String TAG = "VpnManage";
46
47    private VpnConfig mConfig;
48
49    private IConnectivityManager mService;
50
51    private AlertDialog mDialog;
52    private TextView mDuration;
53    private TextView mDataTransmitted;
54    private TextView mDataReceived;
55
56    private Handler mHandler;
57
58    @Override
59    protected void onResume() {
60        super.onResume();
61        try {
62            mConfig = getIntent().getParcelableExtra("config");
63
64            mService = IConnectivityManager.Stub.asInterface(
65                    ServiceManager.getService(Context.CONNECTIVITY_SERVICE));
66
67            View view = View.inflate(this, R.layout.manage, null);
68            if (mConfig.sessionName != null) {
69                ((TextView) view.findViewById(R.id.session)).setText(mConfig.sessionName);
70            }
71            mDuration = (TextView) view.findViewById(R.id.duration);
72            mDataTransmitted = (TextView) view.findViewById(R.id.data_transmitted);
73            mDataReceived = (TextView) view.findViewById(R.id.data_received);
74
75            if (mConfig.packageName.equals(VpnConfig.LEGACY_VPN)) {
76                mDialog = new AlertDialog.Builder(this)
77                        .setIcon(android.R.drawable.ic_dialog_info)
78                        .setTitle(R.string.legacy_title)
79                        .setView(view)
80                        .setNeutralButton(R.string.disconnect, this)
81                        .setNegativeButton(android.R.string.cancel, this)
82                        .create();
83            } else {
84                PackageManager pm = getPackageManager();
85                ApplicationInfo app = pm.getApplicationInfo(mConfig.packageName, 0);
86
87                mDialog = new AlertDialog.Builder(this)
88                        .setIcon(app.loadIcon(pm))
89                        .setTitle(app.loadLabel(pm))
90                        .setView(view)
91                        .setNeutralButton(R.string.disconnect, this)
92                        .setNegativeButton(android.R.string.cancel, this)
93                        .create();
94            }
95
96            if (mConfig.configureIntent != null) {
97                mDialog.setButton(DialogInterface.BUTTON_POSITIVE,
98                        getText(R.string.configure), this);
99            }
100            mDialog.setOnDismissListener(this);
101            mDialog.show();
102
103            if (mHandler == null) {
104                mHandler = new Handler(this);
105            }
106            mHandler.sendEmptyMessage(0);
107        } catch (Exception e) {
108            Log.e(TAG, "onResume", e);
109            finish();
110        }
111    }
112
113    @Override
114    protected void onPause() {
115        super.onPause();
116        if (mDialog != null) {
117            mDialog.setOnDismissListener(null);
118            mDialog.dismiss();
119        }
120    }
121
122    @Override
123    public void onClick(DialogInterface dialog, int which) {
124        try {
125            if (which == AlertDialog.BUTTON_POSITIVE) {
126                mConfig.configureIntent.send();
127            } else if (which == AlertDialog.BUTTON_NEUTRAL) {
128                mService.prepareVpn(VpnConfig.LEGACY_VPN);
129            }
130        } catch (Exception e) {
131            Log.e(TAG, "onClick", e);
132            finish();
133        }
134    }
135
136    @Override
137    public void onDismiss(DialogInterface dialog) {
138        finish();
139    }
140
141    @Override
142    public boolean handleMessage(Message message) {
143        mHandler.removeMessages(0);
144
145        if (mDialog.isShowing()) {
146            if (mConfig.startTime != 0) {
147                long seconds = (SystemClock.elapsedRealtime() - mConfig.startTime) / 1000;
148                mDuration.setText(String.format("%02d:%02d:%02d",
149                        seconds / 3600, seconds / 60 % 60, seconds % 60));
150            }
151
152            String[] numbers = getStatistics();
153            if (numbers != null) {
154                // [1] and [2] are received data in bytes and packets.
155                mDataReceived.setText(getString(R.string.data_value_format,
156                        numbers[1], numbers[2]));
157
158                // [9] and [10] are transmitted data in bytes and packets.
159                mDataTransmitted.setText(getString(R.string.data_value_format,
160                        numbers[9], numbers[10]));
161            }
162            mHandler.sendEmptyMessageDelayed(0, 1000);
163        }
164        return true;
165    }
166
167    private String[] getStatistics() {
168        DataInputStream in = null;
169        try {
170            // See dev_seq_printf_stats() in net/core/dev.c.
171            in = new DataInputStream(new FileInputStream("/proc/net/dev"));
172            String prefix = mConfig.interfaceName + ':';
173
174            while (true) {
175                String line = in.readLine().trim();
176                if (line.startsWith(prefix)) {
177                    String[] numbers = line.substring(prefix.length()).split(" +");
178                    if (numbers.length == 17) {
179                        return numbers;
180                    }
181                    break;
182                }
183            }
184        } catch (Exception e) {
185            // ignore
186        } finally {
187            try {
188                in.close();
189            } catch (Exception e) {
190                // ignore
191            }
192        }
193        return null;
194    }
195}
196