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 17 package com.android.vpndialogs; 18 19 import android.app.Activity; 20 import android.app.AlertDialog; 21 import android.content.Context; 22 import android.content.DialogInterface; 23 import android.content.Intent; 24 import android.content.pm.ApplicationInfo; 25 import android.content.pm.PackageManager; 26 import android.net.IConnectivityManager; 27 import android.os.Handler; 28 import android.os.Message; 29 import android.os.ServiceManager; 30 import android.os.SystemClock; 31 import android.util.Log; 32 import android.view.View; 33 import android.widget.Button; 34 import android.widget.CompoundButton; 35 import android.widget.ImageView; 36 import android.widget.TextView; 37 38 import com.android.internal.net.VpnConfig; 39 40 import java.io.DataInputStream; 41 import java.io.FileInputStream; 42 43 public 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 62 if (getCallingPackage() != null) { 63 Log.e(TAG, getCallingPackage() + " cannot start this activity"); 64 finish(); 65 return; 66 } 67 68 try { 69 mConfig = getIntent().getParcelableExtra("config"); 70 71 mService = IConnectivityManager.Stub.asInterface( 72 ServiceManager.getService(Context.CONNECTIVITY_SERVICE)); 73 74 View view = View.inflate(this, R.layout.manage, null); 75 if (mConfig.session != null) { 76 ((TextView) view.findViewById(R.id.session)).setText(mConfig.session); 77 } 78 mDuration = (TextView) view.findViewById(R.id.duration); 79 mDataTransmitted = (TextView) view.findViewById(R.id.data_transmitted); 80 mDataReceived = (TextView) view.findViewById(R.id.data_received); 81 82 if (mConfig.user.equals(VpnConfig.LEGACY_VPN)) { 83 mDialog = new AlertDialog.Builder(this) 84 .setIcon(android.R.drawable.ic_dialog_info) 85 .setTitle(R.string.legacy_title) 86 .setView(view) 87 .setNeutralButton(R.string.disconnect, this) 88 .setNegativeButton(android.R.string.cancel, this) 89 .create(); 90 } else { 91 PackageManager pm = getPackageManager(); 92 ApplicationInfo app = pm.getApplicationInfo(mConfig.user, 0); 93 mDialog = new AlertDialog.Builder(this) 94 .setIcon(app.loadIcon(pm)) 95 .setTitle(app.loadLabel(pm)) 96 .setView(view) 97 .setNeutralButton(R.string.disconnect, this) 98 .setNegativeButton(android.R.string.cancel, this) 99 .create(); 100 } 101 102 if (mConfig.configureIntent != null) { 103 mDialog.setButton(DialogInterface.BUTTON_POSITIVE, 104 getText(R.string.configure), this); 105 } 106 mDialog.setOnDismissListener(this); 107 mDialog.show(); 108 109 if (mHandler == null) { 110 mHandler = new Handler(this); 111 } 112 mHandler.sendEmptyMessage(0); 113 } catch (Exception e) { 114 Log.e(TAG, "onResume", e); 115 finish(); 116 } 117 } 118 119 @Override 120 protected void onPause() { 121 super.onPause(); 122 if (mDialog != null) { 123 mDialog.setOnDismissListener(null); 124 mDialog.dismiss(); 125 } 126 } 127 128 @Override 129 public void onClick(DialogInterface dialog, int which) { 130 try { 131 if (which == AlertDialog.BUTTON_POSITIVE) { 132 mConfig.configureIntent.send(); 133 } else if (which == AlertDialog.BUTTON_NEUTRAL) { 134 mService.prepareVpn(mConfig.user, VpnConfig.LEGACY_VPN); 135 } 136 } catch (Exception e) { 137 Log.e(TAG, "onClick", e); 138 finish(); 139 } 140 } 141 142 @Override 143 public void onDismiss(DialogInterface dialog) { 144 finish(); 145 } 146 147 @Override 148 public boolean handleMessage(Message message) { 149 mHandler.removeMessages(0); 150 151 if (mDialog.isShowing()) { 152 if (mConfig.startTime != 0) { 153 long seconds = (SystemClock.elapsedRealtime() - mConfig.startTime) / 1000; 154 mDuration.setText(String.format("%02d:%02d:%02d", 155 seconds / 3600, seconds / 60 % 60, seconds % 60)); 156 } 157 158 String[] numbers = getStatistics(); 159 if (numbers != null) { 160 // [1] and [2] are received data in bytes and packets. 161 mDataReceived.setText(getString(R.string.data_value_format, 162 numbers[1], numbers[2])); 163 164 // [9] and [10] are transmitted data in bytes and packets. 165 mDataTransmitted.setText(getString(R.string.data_value_format, 166 numbers[9], numbers[10])); 167 } 168 mHandler.sendEmptyMessageDelayed(0, 1000); 169 } 170 return true; 171 } 172 173 private String[] getStatistics() { 174 DataInputStream in = null; 175 try { 176 // See dev_seq_printf_stats() in net/core/dev.c. 177 in = new DataInputStream(new FileInputStream("/proc/net/dev")); 178 String prefix = mConfig.interfaze + ':'; 179 180 while (true) { 181 String line = in.readLine().trim(); 182 if (line.startsWith(prefix)) { 183 String[] numbers = line.substring(prefix.length()).split(" +"); 184 for (int i = 1; i < 17; ++i) { 185 if (!numbers[i].equals("0")) { 186 return numbers; 187 } 188 } 189 break; 190 } 191 } 192 } catch (Exception e) { 193 // ignore 194 } finally { 195 try { 196 in.close(); 197 } catch (Exception e) { 198 // ignore 199 } 200 } 201 return null; 202 } 203 } 204
