ManageDialog.java revision ae380fb89dedaa03597d031370a18aa153a6a645 
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.content.Context;
20import android.content.DialogInterface;
21import android.content.Intent;
22import android.content.pm.ApplicationInfo;
23import android.content.pm.PackageManager;
24import android.net.IConnectivityManager;
25import android.os.Handler;
26import android.os.Message;
27import android.os.ServiceManager;
28import android.os.SystemClock;
29import android.util.Log;
30import android.view.View;
31import android.widget.Button;
32import android.widget.CompoundButton;
33import android.widget.ImageView;
34import android.widget.TextView;
35
36import com.android.internal.app.AlertActivity;
37import com.android.internal.net.VpnConfig;
38
39import java.io.DataInputStream;
40import java.io.FileInputStream;
41
42public class ManageDialog extends AlertActivity implements
43        DialogInterface.OnClickListener, Handler.Callback {
44    private static final String TAG = "VpnManage";
45
46    private VpnConfig mConfig;
47
48    private IConnectivityManager mService;
49
50    private TextView mDuration;
51    private TextView mDataTransmitted;
52    private TextView mDataReceived;
53
54    private Handler mHandler;
55
56    @Override
57    protected void onResume() {
58        super.onResume();
59
60        if (getCallingPackage() != null) {
61            Log.e(TAG, getCallingPackage() + " cannot start this activity");
62            finish();
63            return;
64        }
65
66        try {
67            mConfig = getIntent().getParcelableExtra("config");
68
69            mService = IConnectivityManager.Stub.asInterface(
70                    ServiceManager.getService(Context.CONNECTIVITY_SERVICE));
71
72            View view = View.inflate(this, R.layout.manage, null);
73            if (mConfig.session != null) {
74                ((TextView) view.findViewById(R.id.session)).setText(mConfig.session);
75            }
76            mDuration = (TextView) view.findViewById(R.id.duration);
77            mDataTransmitted = (TextView) view.findViewById(R.id.data_transmitted);
78            mDataReceived = (TextView) view.findViewById(R.id.data_received);
79
80            if (mConfig.user.equals(VpnConfig.LEGACY_VPN)) {
81                mAlertParams.mIconId = android.R.drawable.ic_dialog_info;
82                mAlertParams.mTitle = getText(R.string.legacy_title);
83            } else {
84                PackageManager pm = getPackageManager();
85                ApplicationInfo app = pm.getApplicationInfo(mConfig.user, 0);
86                mAlertParams.mIcon = app.loadIcon(pm);
87                mAlertParams.mTitle = app.loadLabel(pm);
88            }
89            if (mConfig.configureIntent != null) {
90                mAlertParams.mPositiveButtonText = getText(R.string.configure);
91                mAlertParams.mPositiveButtonListener = this;
92            }
93            mAlertParams.mNeutralButtonText = getText(R.string.disconnect);
94            mAlertParams.mNeutralButtonListener = this;
95            mAlertParams.mNegativeButtonText = getText(android.R.string.cancel);
96            mAlertParams.mNegativeButtonListener = this;
97            mAlertParams.mView = view;
98            setupAlert();
99
100            if (mHandler == null) {
101                mHandler = new Handler(this);
102            }
103            mHandler.sendEmptyMessage(0);
104        } catch (Exception e) {
105            Log.e(TAG, "onResume", e);
106            finish();
107        }
108    }
109
110    @Override
111    protected void onPause() {
112        super.onPause();
113        if (!isFinishing()) {
114            finish();
115        }
116    }
117
118    @Override
119    public void onClick(DialogInterface dialog, int which) {
120        try {
121            if (which == DialogInterface.BUTTON_POSITIVE) {
122                mConfig.configureIntent.send();
123            } else if (which == DialogInterface.BUTTON_NEUTRAL) {
124                mService.prepareVpn(mConfig.user, VpnConfig.LEGACY_VPN);
125            }
126        } catch (Exception e) {
127            Log.e(TAG, "onClick", e);
128            finish();
129        }
130    }
131
132    @Override
133    public boolean handleMessage(Message message) {
134        mHandler.removeMessages(0);
135
136        if (!isFinishing()) {
137            if (mConfig.startTime != 0) {
138                long seconds = (SystemClock.elapsedRealtime() - mConfig.startTime) / 1000;
139                mDuration.setText(String.format("%02d:%02d:%02d",
140                        seconds / 3600, seconds / 60 % 60, seconds % 60));
141            }
142
143            String[] numbers = getStatistics();
144            if (numbers != null) {
145                // [1] and [2] are received data in bytes and packets.
146                mDataReceived.setText(getString(R.string.data_value_format,
147                        numbers[1], numbers[2]));
148
149                // [9] and [10] are transmitted data in bytes and packets.
150                mDataTransmitted.setText(getString(R.string.data_value_format,
151                        numbers[9], numbers[10]));
152            }
153            mHandler.sendEmptyMessageDelayed(0, 1000);
154        }
155        return true;
156    }
157
158    private String[] getStatistics() {
159        DataInputStream in = null;
160        try {
161            // See dev_seq_printf_stats() in net/core/dev.c.
162            in = new DataInputStream(new FileInputStream("/proc/net/dev"));
163            String prefix = mConfig.interfaze + ':';
164
165            while (true) {
166                String line = in.readLine().trim();
167                if (line.startsWith(prefix)) {
168                    String[] numbers = line.substring(prefix.length()).split(" +");
169                    for (int i = 1; i < 17; ++i) {
170                        if (!numbers[i].equals("0")) {
171                            return numbers;
172                        }
173                    }
174                    break;
175                }
176            }
177        } catch (Exception e) {
178            // ignore
179        } finally {
180            try {
181                in.close();
182            } catch (Exception e) {
183                // ignore
184            }
185        }
186        return null;
187    }
188}
189