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      1 /*
      2  * Copyright (C) 2013 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.server.connectivity;
     18 
     19 import android.content.BroadcastReceiver;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.content.IntentFilter;
     23 import android.net.ConnectivityManager;
     24 import android.os.RemoteException;
     25 import android.telephony.PhoneStateListener;
     26 import android.telephony.ServiceState;
     27 import android.telephony.SignalStrength;
     28 import android.telephony.TelephonyManager;
     29 import android.util.Log;
     30 
     31 import com.android.internal.app.IBatteryStats;
     32 import com.android.internal.telephony.IccCardConstants;
     33 import com.android.internal.telephony.TelephonyIntents;
     34 import com.android.server.am.BatteryStatsService;
     35 
     36 public class DataConnectionStats extends BroadcastReceiver {
     37     private static final String TAG = "DataConnectionStats";
     38     private static final boolean DEBUG = false;
     39 
     40     private final Context mContext;
     41     private final IBatteryStats mBatteryStats;
     42 
     43     private IccCardConstants.State mSimState = IccCardConstants.State.READY;
     44     private SignalStrength mSignalStrength;
     45     private ServiceState mServiceState;
     46     private int mDataState = TelephonyManager.DATA_DISCONNECTED;
     47 
     48     public DataConnectionStats(Context context) {
     49         mContext = context;
     50         mBatteryStats = BatteryStatsService.getService();
     51     }
     52 
     53     public void startMonitoring() {
     54         TelephonyManager phone =
     55                 (TelephonyManager)mContext.getSystemService(Context.TELEPHONY_SERVICE);
     56         phone.listen(mPhoneStateListener,
     57                 PhoneStateListener.LISTEN_SERVICE_STATE
     58               | PhoneStateListener.LISTEN_SIGNAL_STRENGTHS
     59               | PhoneStateListener.LISTEN_DATA_CONNECTION_STATE
     60               | PhoneStateListener.LISTEN_DATA_ACTIVITY);
     61 
     62         IntentFilter filter = new IntentFilter();
     63         filter.addAction(TelephonyIntents.ACTION_SIM_STATE_CHANGED);
     64         filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
     65         filter.addAction(ConnectivityManager.INET_CONDITION_ACTION);
     66         mContext.registerReceiver(this, filter);
     67     }
     68 
     69     @Override
     70     public void onReceive(Context context, Intent intent) {
     71         final String action = intent.getAction();
     72         if (action.equals(TelephonyIntents.ACTION_SIM_STATE_CHANGED)) {
     73             updateSimState(intent);
     74             notePhoneDataConnectionState();
     75         } else if (action.equals(ConnectivityManager.CONNECTIVITY_ACTION) ||
     76                 action.equals(ConnectivityManager.INET_CONDITION_ACTION)) {
     77             notePhoneDataConnectionState();
     78        }
     79     }
     80 
     81     private void notePhoneDataConnectionState() {
     82         if (mServiceState == null) {
     83             return;
     84         }
     85         boolean simReadyOrUnknown = mSimState == IccCardConstants.State.READY
     86                 || mSimState == IccCardConstants.State.UNKNOWN;
     87         boolean visible = (simReadyOrUnknown || isCdma()) // we only check the sim state for GSM
     88                 && hasService()
     89                 && mDataState == TelephonyManager.DATA_CONNECTED;
     90         int networkType = mServiceState.getDataNetworkType();
     91         if (DEBUG) Log.d(TAG, String.format("Noting data connection for network type %s: %svisible",
     92                 networkType, visible ? "" : "not "));
     93         try {
     94             mBatteryStats.notePhoneDataConnectionState(networkType, visible);
     95         } catch (RemoteException e) {
     96             Log.w(TAG, "Error noting data connection state", e);
     97         }
     98     }
     99 
    100     private final void updateSimState(Intent intent) {
    101         String stateExtra = intent.getStringExtra(IccCardConstants.INTENT_KEY_ICC_STATE);
    102         if (IccCardConstants.INTENT_VALUE_ICC_ABSENT.equals(stateExtra)) {
    103             mSimState = IccCardConstants.State.ABSENT;
    104         } else if (IccCardConstants.INTENT_VALUE_ICC_READY.equals(stateExtra)) {
    105             mSimState = IccCardConstants.State.READY;
    106         } else if (IccCardConstants.INTENT_VALUE_ICC_LOCKED.equals(stateExtra)) {
    107             final String lockedReason =
    108                     intent.getStringExtra(IccCardConstants.INTENT_KEY_LOCKED_REASON);
    109             if (IccCardConstants.INTENT_VALUE_LOCKED_ON_PIN.equals(lockedReason)) {
    110                 mSimState = IccCardConstants.State.PIN_REQUIRED;
    111             } else if (IccCardConstants.INTENT_VALUE_LOCKED_ON_PUK.equals(lockedReason)) {
    112                 mSimState = IccCardConstants.State.PUK_REQUIRED;
    113             } else {
    114                 mSimState = IccCardConstants.State.NETWORK_LOCKED;
    115             }
    116         } else {
    117             mSimState = IccCardConstants.State.UNKNOWN;
    118         }
    119     }
    120 
    121     private boolean isCdma() {
    122         return mSignalStrength != null && !mSignalStrength.isGsm();
    123     }
    124 
    125     private boolean hasService() {
    126         return mServiceState != null
    127                 && mServiceState.getState() != ServiceState.STATE_OUT_OF_SERVICE
    128                 && mServiceState.getState() != ServiceState.STATE_POWER_OFF;
    129     }
    130 
    131     private final PhoneStateListener mPhoneStateListener = new PhoneStateListener() {
    132         @Override
    133         public void onSignalStrengthsChanged(SignalStrength signalStrength) {
    134             mSignalStrength = signalStrength;
    135         }
    136 
    137         @Override
    138         public void onServiceStateChanged(ServiceState state) {
    139             mServiceState = state;
    140             notePhoneDataConnectionState();
    141         }
    142 
    143         @Override
    144         public void onDataConnectionStateChanged(int state, int networkType) {
    145             mDataState = state;
    146             notePhoneDataConnectionState();
    147         }
    148 
    149         @Override
    150         public void onDataActivity(int direction) {
    151             notePhoneDataConnectionState();
    152         }
    153     };
    154 }
    155