services/java/com/android/server/TelephonyRegistry.java - LeafOS-Project/android_frameworks_base - Gitiles

 /*
  * Copyright (C) 2007 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.server;

 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.os.Binder;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.RemoteException;
 import android.telephony.CellLocation;
 import android.telephony.PhoneStateListener;
 import android.telephony.ServiceState;
 import android.telephony.SignalStrength;
 import android.telephony.TelephonyManager;
 import android.text.TextUtils;
 import android.util.Slog;

 import java.util.ArrayList;
 import java.io.FileDescriptor;
 import java.io.PrintWriter;

 import com.android.internal.app.IBatteryStats;
 import com.android.internal.telephony.ITelephonyRegistry;
 import com.android.internal.telephony.IPhoneStateListener;
 import com.android.internal.telephony.DefaultPhoneNotifier;
 import com.android.internal.telephony.Phone;
 import com.android.internal.telephony.TelephonyIntents;
 import com.android.server.am.BatteryStatsService;

 /**
  * Since phone process can be restarted, this class provides a centralized place
  * that applications can register and be called back from.
  */
 class TelephonyRegistry extends ITelephonyRegistry.Stub {
     private static final String TAG = "TelephonyRegistry";

     private static class Record {
         String pkgForDebug;

         IBinder binder;

         IPhoneStateListener callback;

         int events;
     }

     private final Context mContext;

     private final ArrayList<Record> mRecords = new ArrayList();

     private final IBatteryStats mBatteryStats;

     private int mCallState = TelephonyManager.CALL_STATE_IDLE;

     private String mCallIncomingNumber = "";

     private ServiceState mServiceState = new ServiceState();

     private SignalStrength mSignalStrength = new SignalStrength();

     private boolean mMessageWaiting = false;

     private boolean mCallForwarding = false;

     private int mDataActivity = TelephonyManager.DATA_ACTIVITY_NONE;

     private int mDataConnectionState = TelephonyManager.DATA_CONNECTED;

     private boolean mDataConnectionPossible = false;

     private String mDataConnectionReason = "";

     private String mDataConnectionApn = "";

     private String[] mDataConnectionApnTypes = null;

     private String mDataConnectionInterfaceName = "";

     private Bundle mCellLocation = new Bundle();

     private int mDataConnectionNetworkType;

     static final int PHONE_STATE_PERMISSION_MASK =
                 PhoneStateListener.LISTEN_CALL_FORWARDING_INDICATOR |
                 PhoneStateListener.LISTEN_CALL_STATE |
                 PhoneStateListener.LISTEN_DATA_ACTIVITY |
                 PhoneStateListener.LISTEN_DATA_CONNECTION_STATE |
                 PhoneStateListener.LISTEN_MESSAGE_WAITING_INDICATOR;

     // we keep a copy of all of the state so we can send it out when folks
     // register for it
     //
     // In these calls we call with the lock held. This is safe becasuse remote
     // calls go through a oneway interface and local calls going through a
     // handler before they get to app code.

     TelephonyRegistry(Context context) {
         CellLocation  location = CellLocation.getEmpty();

         // Note that location can be null for non-phone builds like
         // like the generic one.
         if (location != null) {
             location.fillInNotifierBundle(mCellLocation);
         }
         mContext = context;
         mBatteryStats = BatteryStatsService.getService();
     }

     public void listen(String pkgForDebug, IPhoneStateListener callback, int events,
             boolean notifyNow) {
         // Slog.d(TAG, "listen pkg=" + pkgForDebug + " events=0x" +
         // Integer.toHexString(events));
         if (events != 0) {
             /* Checks permission and throws Security exception */
             checkListenerPermission(events);

             synchronized (mRecords) {
                 // register
                 Record r = null;
                 find_and_add: {
                     IBinder b = callback.asBinder();
                     final int N = mRecords.size();
                     for (int i = 0; i < N; i++) {
                         r = mRecords.get(i);
                         if (b == r.binder) {
                             break find_and_add;
                         }
                     }
                     r = new Record();
                     r.binder = b;
                     r.callback = callback;
                     r.pkgForDebug = pkgForDebug;
                     mRecords.add(r);
                 }
                 int send = events & (events ^ r.events);
                 r.events = events;
                 if (notifyNow) {
                     if ((events & PhoneStateListener.LISTEN_SERVICE_STATE) != 0) {
                         sendServiceState(r, mServiceState);
                     }
                     if ((events & PhoneStateListener.LISTEN_SIGNAL_STRENGTH) != 0) {
                         try {
                             int gsmSignalStrength = mSignalStrength.getGsmSignalStrength();
                             r.callback.onSignalStrengthChanged((gsmSignalStrength == 99 ? -1
                                     : gsmSignalStrength));
                         } catch (RemoteException ex) {
                             remove(r.binder);
                         }
                     }
                     if ((events & PhoneStateListener.LISTEN_MESSAGE_WAITING_INDICATOR) != 0) {
                         try {
                             r.callback.onMessageWaitingIndicatorChanged(mMessageWaiting);
                         } catch (RemoteException ex) {
                             remove(r.binder);
                         }
                     }
                     if ((events & PhoneStateListener.LISTEN_CALL_FORWARDING_INDICATOR) != 0) {
                         try {
                             r.callback.onCallForwardingIndicatorChanged(mCallForwarding);
                         } catch (RemoteException ex) {
                             remove(r.binder);
                         }
                     }
                     if ((events & PhoneStateListener.LISTEN_CELL_LOCATION) != 0) {
                         sendCellLocation(r, mCellLocation);
                     }
                     if ((events & PhoneStateListener.LISTEN_CALL_STATE) != 0) {
                         try {
                             r.callback.onCallStateChanged(mCallState, mCallIncomingNumber);
                         } catch (RemoteException ex) {
                             remove(r.binder);
                         }
                     }
                     if ((events & PhoneStateListener.LISTEN_DATA_CONNECTION_STATE) != 0) {
                         try {
                             r.callback.onDataConnectionStateChanged(mDataConnectionState,
                                 mDataConnectionNetworkType);
                         } catch (RemoteException ex) {
                             remove(r.binder);
                         }
                     }
                     if ((events & PhoneStateListener.LISTEN_DATA_ACTIVITY) != 0) {
                         try {
                             r.callback.onDataActivity(mDataActivity);
                         } catch (RemoteException ex) {
                             remove(r.binder);
                         }
                     }
                     if ((events & PhoneStateListener.LISTEN_SIGNAL_STRENGTHS) != 0) {
                         try {
                             r.callback.onSignalStrengthsChanged(mSignalStrength);
                         } catch (RemoteException ex) {
                             remove(r.binder);
                         }
                     }
                 }
             }
         } else {
             remove(callback.asBinder());
         }
     }

     private void remove(IBinder binder) {
         synchronized (mRecords) {
             final int recordCount = mRecords.size();
             for (int i = 0; i < recordCount; i++) {
                 if (mRecords.get(i).binder == binder) {
                     mRecords.remove(i);
                     return;
                 }
             }
         }
     }

     public void notifyCallState(int state, String incomingNumber) {
         if (!checkNotifyPermission("notifyCallState()")) {
             return;
         }
         synchronized (mRecords) {
             mCallState = state;
             mCallIncomingNumber = incomingNumber;
             for (int i = mRecords.size() - 1; i >= 0; i--) {
                 Record r = mRecords.get(i);
                 if ((r.events & PhoneStateListener.LISTEN_CALL_STATE) != 0) {
                     try {
                         r.callback.onCallStateChanged(state, incomingNumber);
                     } catch (RemoteException ex) {
                         remove(r.binder);
                     }
                 }
             }
         }
         broadcastCallStateChanged(state, incomingNumber);
     }

     public void notifyServiceState(ServiceState state) {
         if (!checkNotifyPermission("notifyServiceState()")){
             return;
         }
         synchronized (mRecords) {
             mServiceState = state;
             for (int i = mRecords.size() - 1; i >= 0; i--) {
                 Record r = mRecords.get(i);
                 if ((r.events & PhoneStateListener.LISTEN_SERVICE_STATE) != 0) {
                     sendServiceState(r, state);
                 }
             }
         }
         broadcastServiceStateChanged(state);
     }

     public void notifySignalStrength(SignalStrength signalStrength) {
         if (!checkNotifyPermission("notifySignalStrength()")) {
             return;
         }
         synchronized (mRecords) {
             mSignalStrength = signalStrength;
             for (int i = mRecords.size() - 1; i >= 0; i--) {
                 Record r = mRecords.get(i);
                 if ((r.events & PhoneStateListener.LISTEN_SIGNAL_STRENGTHS) != 0) {
                     sendSignalStrength(r, signalStrength);
                 }
                 if ((r.events & PhoneStateListener.LISTEN_SIGNAL_STRENGTH) != 0) {
                     try {
                         int gsmSignalStrength = signalStrength.getGsmSignalStrength();
                         r.callback.onSignalStrengthChanged((gsmSignalStrength == 99 ? -1
                                 : gsmSignalStrength));
                     } catch (RemoteException ex) {
                         remove(r.binder);
                     }
                 }
             }
         }
         broadcastSignalStrengthChanged(signalStrength);
     }

     public void notifyMessageWaitingChanged(boolean mwi) {
         if (!checkNotifyPermission("notifyMessageWaitingChanged()")) {
             return;
         }
         synchronized (mRecords) {
             mMessageWaiting = mwi;
             for (int i = mRecords.size() - 1; i >= 0; i--) {
                 Record r = mRecords.get(i);
                 if ((r.events & PhoneStateListener.LISTEN_MESSAGE_WAITING_INDICATOR) != 0) {
                     try {
                         r.callback.onMessageWaitingIndicatorChanged(mwi);
                     } catch (RemoteException ex) {
                         remove(r.binder);
                     }
                 }
             }
         }
     }

     public void notifyCallForwardingChanged(boolean cfi) {
         if (!checkNotifyPermission("notifyCallForwardingChanged()")) {
             return;
         }
         synchronized (mRecords) {
             mCallForwarding = cfi;
             for (int i = mRecords.size() - 1; i >= 0; i--) {
                 Record r = mRecords.get(i);
                 if ((r.events & PhoneStateListener.LISTEN_CALL_FORWARDING_INDICATOR) != 0) {
                     try {
                         r.callback.onCallForwardingIndicatorChanged(cfi);
                     } catch (RemoteException ex) {
                         remove(r.binder);
                     }
                 }
             }
         }
     }

     public void notifyDataActivity(int state) {
         if (!checkNotifyPermission("notifyDataActivity()" )) {
             return;
         }
         synchronized (mRecords) {
             mDataActivity = state;
             for (int i = mRecords.size() - 1; i >= 0; i--) {
                 Record r = mRecords.get(i);
                 if ((r.events & PhoneStateListener.LISTEN_DATA_ACTIVITY) != 0) {
                     try {
                         r.callback.onDataActivity(state);
                     } catch (RemoteException ex) {
                         remove(r.binder);
                     }
                 }
             }
         }
     }

     public void notifyDataConnection(int state, boolean isDataConnectivityPossible,
             String reason, String apn, String[] apnTypes, String interfaceName, int networkType) {
         if (!checkNotifyPermission("notifyDataConnection()" )) {
             return;
         }
         synchronized (mRecords) {
             mDataConnectionState = state;
             mDataConnectionPossible = isDataConnectivityPossible;
             mDataConnectionReason = reason;
             mDataConnectionApn = apn;
             mDataConnectionApnTypes = apnTypes;
             mDataConnectionInterfaceName = interfaceName;
             mDataConnectionNetworkType = networkType;
             for (int i = mRecords.size() - 1; i >= 0; i--) {
                 Record r = mRecords.get(i);
                 if ((r.events & PhoneStateListener.LISTEN_DATA_CONNECTION_STATE) != 0) {
                     try {
                         r.callback.onDataConnectionStateChanged(state, networkType);
                     } catch (RemoteException ex) {
                         remove(r.binder);
                     }
                 }
             }
         }
         broadcastDataConnectionStateChanged(state, isDataConnectivityPossible, reason, apn,
                 apnTypes, interfaceName);
     }

     public void notifyDataConnectionFailed(String reason) {
         if (!checkNotifyPermission("notifyDataConnectionFailed()")) {
             return;
         }
         /*
          * This is commented out because there is on onDataConnectionFailed callback
          * on PhoneStateListener. There should be
         synchronized (mRecords) {
             mDataConnectionFailedReason = reason;
             final int N = mRecords.size();
             for (int i=N-1; i>=0; i--) {
                 Record r = mRecords.get(i);
                 if ((r.events & PhoneStateListener.LISTEN_DATA_CONNECTION_FAILED) != 0) {
                     // XXX
                 }
             }
         }
         */
         broadcastDataConnectionFailed(reason);
     }

     public void notifyCellLocation(Bundle cellLocation) {
         if (!checkNotifyPermission("notifyCellLocation()")) {
             return;
         }
         synchronized (mRecords) {
             mCellLocation = cellLocation;
             for (int i = mRecords.size() - 1; i >= 0; i--) {
                 Record r = mRecords.get(i);
                 if ((r.events & PhoneStateListener.LISTEN_CELL_LOCATION) != 0) {
                     sendCellLocation(r, cellLocation);
                 }
             }
         }
     }

     /**
      * Copy the service state object so they can't mess it up in the local calls
      */
     public void sendServiceState(Record r, ServiceState state) {
         try {
             r.callback.onServiceStateChanged(new ServiceState(state));
         } catch (RemoteException ex) {
             remove(r.binder);
         }
     }

     private void sendCellLocation(Record r, Bundle cellLocation) {
         try {
             r.callback.onCellLocationChanged(new Bundle(cellLocation));
         } catch (RemoteException ex) {
             remove(r.binder);
         }
     }

     private void sendSignalStrength(Record r, SignalStrength signalStrength) {
         try {
             r.callback.onSignalStrengthsChanged(new SignalStrength(signalStrength));
         } catch (RemoteException ex) {
             remove(r.binder);
         }
     }

     @Override
     public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
         if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
                 != PackageManager.PERMISSION_GRANTED) {
             pw.println("Permission Denial: can't dump telephony.registry from from pid="
                     + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid());
             return;
         }
         synchronized (mRecords) {
             final int recordCount = mRecords.size();
             pw.println("last known state:");
             pw.println("  mCallState=" + mCallState);
             pw.println("  mCallIncomingNumber=" + mCallIncomingNumber);
             pw.println("  mServiceState=" + mServiceState);
             pw.println("  mSignalStrength=" + mSignalStrength);
             pw.println("  mMessageWaiting=" + mMessageWaiting);
             pw.println("  mCallForwarding=" + mCallForwarding);
             pw.println("  mDataActivity=" + mDataActivity);
             pw.println("  mDataConnectionState=" + mDataConnectionState);
             pw.println("  mDataConnectionPossible=" + mDataConnectionPossible);
             pw.println("  mDataConnectionReason=" + mDataConnectionReason);
             pw.println("  mDataConnectionApn=" + mDataConnectionApn);
             pw.println("  mDataConnectionInterfaceName=" + mDataConnectionInterfaceName);
             pw.println("  mCellLocation=" + mCellLocation);
             pw.println("registrations: count=" + recordCount);
             for (int i = 0; i < recordCount; i++) {
                 Record r = mRecords.get(i);
                 pw.println("  " + r.pkgForDebug + " 0x" + Integer.toHexString(r.events));
             }
         }
     }

     //
     // the legacy intent broadcasting
     //

     private void broadcastServiceStateChanged(ServiceState state) {
         long ident = Binder.clearCallingIdentity();
         try {
             mBatteryStats.notePhoneState(state.getState());
         } catch (RemoteException re) {
             // Can't do much
         } finally {
             Binder.restoreCallingIdentity(ident);
         }

         Intent intent = new Intent(TelephonyIntents.ACTION_SERVICE_STATE_CHANGED);
         intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
         Bundle data = new Bundle();
         state.fillInNotifierBundle(data);
         intent.putExtras(data);
         mContext.sendStickyBroadcast(intent);
     }

     private void broadcastSignalStrengthChanged(SignalStrength signalStrength) {
         long ident = Binder.clearCallingIdentity();
         try {
             mBatteryStats.notePhoneSignalStrength(signalStrength);
         } catch (RemoteException e) {
             /* The remote entity disappeared, we can safely ignore the exception. */
         } finally {
             Binder.restoreCallingIdentity(ident);
         }

         Intent intent = new Intent(TelephonyIntents.ACTION_SIGNAL_STRENGTH_CHANGED);
         intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
         Bundle data = new Bundle();
         signalStrength.fillInNotifierBundle(data);
         intent.putExtras(data);
         mContext.sendStickyBroadcast(intent);
     }

     private void broadcastCallStateChanged(int state, String incomingNumber) {
         long ident = Binder.clearCallingIdentity();
         try {
             if (state == TelephonyManager.CALL_STATE_IDLE) {
                 mBatteryStats.notePhoneOff();
             } else {
                 mBatteryStats.notePhoneOn();
             }
         } catch (RemoteException e) {
             /* The remote entity disappeared, we can safely ignore the exception. */
         } finally {
             Binder.restoreCallingIdentity(ident);
         }

         Intent intent = new Intent(TelephonyManager.ACTION_PHONE_STATE_CHANGED);
         intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
         intent.putExtra(Phone.STATE_KEY, DefaultPhoneNotifier.convertCallState(state).toString());
         if (!TextUtils.isEmpty(incomingNumber)) {
             intent.putExtra(TelephonyManager.EXTRA_INCOMING_NUMBER, incomingNumber);
         }
         mContext.sendBroadcast(intent, android.Manifest.permission.READ_PHONE_STATE);
     }

     private void broadcastDataConnectionStateChanged(int state,
             boolean isDataConnectivityPossible,
             String reason, String apn, String[] apnTypes, String interfaceName) {
         // Note: not reporting to the battery stats service here, because the
         // status bar takes care of that after taking into account all of the
         // required info.
         Intent intent = new Intent(TelephonyIntents.ACTION_ANY_DATA_CONNECTION_STATE_CHANGED);
         intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
         intent.putExtra(Phone.STATE_KEY, DefaultPhoneNotifier.convertDataState(state).toString());
         if (!isDataConnectivityPossible) {
             intent.putExtra(Phone.NETWORK_UNAVAILABLE_KEY, true);
         }
         if (reason != null) {
             intent.putExtra(Phone.STATE_CHANGE_REASON_KEY, reason);
         }
         intent.putExtra(Phone.DATA_APN_KEY, apn);
         String types = new String("");
         if (apnTypes.length > 0) {
             types = apnTypes[0];
             for (int i = 1; i < apnTypes.length; i++) {
                 types = types+","+apnTypes[i];
             }
         }
         intent.putExtra(Phone.DATA_APN_TYPES_KEY, types);
         intent.putExtra(Phone.DATA_IFACE_NAME_KEY, interfaceName);
         mContext.sendStickyBroadcast(intent);
     }

     private void broadcastDataConnectionFailed(String reason) {
         Intent intent = new Intent(TelephonyIntents.ACTION_DATA_CONNECTION_FAILED);
         intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
         intent.putExtra(Phone.FAILURE_REASON_KEY, reason);
         mContext.sendStickyBroadcast(intent);
     }

     private boolean checkNotifyPermission(String method) {
         if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
                 == PackageManager.PERMISSION_GRANTED) {
             return true;
         }
         String msg = "Modify Phone State Permission Denial: " + method + " from pid="
                 + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid();
         Slog.w(TAG, msg);
         return false;
     }

     private void checkListenerPermission(int events) {
         if ((events & PhoneStateListener.LISTEN_CELL_LOCATION) != 0) {
             mContext.enforceCallingOrSelfPermission(
                     android.Manifest.permission.ACCESS_COARSE_LOCATION, null);

         }

         if ((events & PHONE_STATE_PERMISSION_MASK) != 0) {
             mContext.enforceCallingOrSelfPermission(
                     android.Manifest.permission.READ_PHONE_STATE, null);
         }
     }
 }
	/*
	* Copyright (C) 2007 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.server;

	import android.content.Context;
	import android.content.Intent;
	import android.content.pm.PackageManager;
	import android.os.Binder;
	import android.os.Bundle;
	import android.os.IBinder;
	import android.os.RemoteException;
	import android.telephony.CellLocation;
	import android.telephony.PhoneStateListener;
	import android.telephony.ServiceState;
	import android.telephony.SignalStrength;
	import android.telephony.TelephonyManager;
	import android.text.TextUtils;
	import android.util.Slog;

	import java.util.ArrayList;
	import java.io.FileDescriptor;
	import java.io.PrintWriter;

	import com.android.internal.app.IBatteryStats;
	import com.android.internal.telephony.ITelephonyRegistry;
	import com.android.internal.telephony.IPhoneStateListener;
	import com.android.internal.telephony.DefaultPhoneNotifier;
	import com.android.internal.telephony.Phone;
	import com.android.internal.telephony.TelephonyIntents;
	import com.android.server.am.BatteryStatsService;

	/**
	* Since phone process can be restarted, this class provides a centralized place
	* that applications can register and be called back from.
	*/
	class TelephonyRegistry extends ITelephonyRegistry.Stub {
	private static final String TAG = "TelephonyRegistry";

	private static class Record {
	String pkgForDebug;

	IBinder binder;

	IPhoneStateListener callback;

	int events;
	}

	private final Context mContext;

	private final ArrayList<Record> mRecords = new ArrayList();

	private final IBatteryStats mBatteryStats;

	private int mCallState = TelephonyManager.CALL_STATE_IDLE;

	private String mCallIncomingNumber = "";

	private ServiceState mServiceState = new ServiceState();

	private SignalStrength mSignalStrength = new SignalStrength();

	private boolean mMessageWaiting = false;

	private boolean mCallForwarding = false;

	private int mDataActivity = TelephonyManager.DATA_ACTIVITY_NONE;

	private int mDataConnectionState = TelephonyManager.DATA_CONNECTED;

	private boolean mDataConnectionPossible = false;

	private String mDataConnectionReason = "";

	private String mDataConnectionApn = "";

	private String[] mDataConnectionApnTypes = null;

	private String mDataConnectionInterfaceName = "";

	private Bundle mCellLocation = new Bundle();

	private int mDataConnectionNetworkType;

	static final int PHONE_STATE_PERMISSION_MASK =
	PhoneStateListener.LISTEN_CALL_FORWARDING_INDICATOR \|
	PhoneStateListener.LISTEN_CALL_STATE \|
	PhoneStateListener.LISTEN_DATA_ACTIVITY \|
	PhoneStateListener.LISTEN_DATA_CONNECTION_STATE \|
	PhoneStateListener.LISTEN_MESSAGE_WAITING_INDICATOR;

	// we keep a copy of all of the state so we can send it out when folks
	// register for it
	//
	// In these calls we call with the lock held. This is safe becasuse remote
	// calls go through a oneway interface and local calls going through a
	// handler before they get to app code.

	TelephonyRegistry(Context context) {
	CellLocation location = CellLocation.getEmpty();

	// Note that location can be null for non-phone builds like
	// like the generic one.
	if (location != null) {
	location.fillInNotifierBundle(mCellLocation);
	}
	mContext = context;
	mBatteryStats = BatteryStatsService.getService();
	}

	public void listen(String pkgForDebug, IPhoneStateListener callback, int events,
	boolean notifyNow) {
	// Slog.d(TAG, "listen pkg=" + pkgForDebug + " events=0x" +
	// Integer.toHexString(events));
	if (events != 0) {
	/* Checks permission and throws Security exception */
	checkListenerPermission(events);

	synchronized (mRecords) {
	// register
	Record r = null;
	find_and_add: {
	IBinder b = callback.asBinder();
	final int N = mRecords.size();
	for (int i = 0; i < N; i++) {
	r = mRecords.get(i);
	if (b == r.binder) {
	break find_and_add;
	}
	}
	r = new Record();
	r.binder = b;
	r.callback = callback;
	r.pkgForDebug = pkgForDebug;
	mRecords.add(r);
	}
	int send = events & (events ^ r.events);
	r.events = events;
	if (notifyNow) {
	if ((events & PhoneStateListener.LISTEN_SERVICE_STATE) != 0) {
	sendServiceState(r, mServiceState);
	}
	if ((events & PhoneStateListener.LISTEN_SIGNAL_STRENGTH) != 0) {
	try {
	int gsmSignalStrength = mSignalStrength.getGsmSignalStrength();
	r.callback.onSignalStrengthChanged((gsmSignalStrength == 99 ? -1
	: gsmSignalStrength));
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}
	if ((events & PhoneStateListener.LISTEN_MESSAGE_WAITING_INDICATOR) != 0) {
	try {
	r.callback.onMessageWaitingIndicatorChanged(mMessageWaiting);
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}
	if ((events & PhoneStateListener.LISTEN_CALL_FORWARDING_INDICATOR) != 0) {
	try {
	r.callback.onCallForwardingIndicatorChanged(mCallForwarding);
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}
	if ((events & PhoneStateListener.LISTEN_CELL_LOCATION) != 0) {
	sendCellLocation(r, mCellLocation);
	}
	if ((events & PhoneStateListener.LISTEN_CALL_STATE) != 0) {
	try {
	r.callback.onCallStateChanged(mCallState, mCallIncomingNumber);
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}
	if ((events & PhoneStateListener.LISTEN_DATA_CONNECTION_STATE) != 0) {
	try {
	r.callback.onDataConnectionStateChanged(mDataConnectionState,
	mDataConnectionNetworkType);
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}
	if ((events & PhoneStateListener.LISTEN_DATA_ACTIVITY) != 0) {
	try {
	r.callback.onDataActivity(mDataActivity);
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}
	if ((events & PhoneStateListener.LISTEN_SIGNAL_STRENGTHS) != 0) {
	try {
	r.callback.onSignalStrengthsChanged(mSignalStrength);
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}
	}
	}
	} else {
	remove(callback.asBinder());
	}
	}

	private void remove(IBinder binder) {
	synchronized (mRecords) {
	final int recordCount = mRecords.size();
	for (int i = 0; i < recordCount; i++) {
	if (mRecords.get(i).binder == binder) {
	mRecords.remove(i);
	return;
	}
	}
	}
	}

	public void notifyCallState(int state, String incomingNumber) {
	if (!checkNotifyPermission("notifyCallState()")) {
	return;
	}
	synchronized (mRecords) {
	mCallState = state;
	mCallIncomingNumber = incomingNumber;
	for (int i = mRecords.size() - 1; i >= 0; i--) {
	Record r = mRecords.get(i);
	if ((r.events & PhoneStateListener.LISTEN_CALL_STATE) != 0) {
	try {
	r.callback.onCallStateChanged(state, incomingNumber);
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}
	}
	}
	broadcastCallStateChanged(state, incomingNumber);
	}

	public void notifyServiceState(ServiceState state) {
	if (!checkNotifyPermission("notifyServiceState()")){
	return;
	}
	synchronized (mRecords) {
	mServiceState = state;
	for (int i = mRecords.size() - 1; i >= 0; i--) {
	Record r = mRecords.get(i);
	if ((r.events & PhoneStateListener.LISTEN_SERVICE_STATE) != 0) {
	sendServiceState(r, state);
	}
	}
	}
	broadcastServiceStateChanged(state);
	}

	public void notifySignalStrength(SignalStrength signalStrength) {
	if (!checkNotifyPermission("notifySignalStrength()")) {
	return;
	}
	synchronized (mRecords) {
	mSignalStrength = signalStrength;
	for (int i = mRecords.size() - 1; i >= 0; i--) {
	Record r = mRecords.get(i);
	if ((r.events & PhoneStateListener.LISTEN_SIGNAL_STRENGTHS) != 0) {
	sendSignalStrength(r, signalStrength);
	}
	if ((r.events & PhoneStateListener.LISTEN_SIGNAL_STRENGTH) != 0) {
	try {
	int gsmSignalStrength = signalStrength.getGsmSignalStrength();
	r.callback.onSignalStrengthChanged((gsmSignalStrength == 99 ? -1
	: gsmSignalStrength));
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}
	}
	}
	broadcastSignalStrengthChanged(signalStrength);
	}

	public void notifyMessageWaitingChanged(boolean mwi) {
	if (!checkNotifyPermission("notifyMessageWaitingChanged()")) {
	return;
	}
	synchronized (mRecords) {
	mMessageWaiting = mwi;
	for (int i = mRecords.size() - 1; i >= 0; i--) {
	Record r = mRecords.get(i);
	if ((r.events & PhoneStateListener.LISTEN_MESSAGE_WAITING_INDICATOR) != 0) {
	try {
	r.callback.onMessageWaitingIndicatorChanged(mwi);
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}
	}
	}
	}

	public void notifyCallForwardingChanged(boolean cfi) {
	if (!checkNotifyPermission("notifyCallForwardingChanged()")) {
	return;
	}
	synchronized (mRecords) {
	mCallForwarding = cfi;
	for (int i = mRecords.size() - 1; i >= 0; i--) {
	Record r = mRecords.get(i);
	if ((r.events & PhoneStateListener.LISTEN_CALL_FORWARDING_INDICATOR) != 0) {
	try {
	r.callback.onCallForwardingIndicatorChanged(cfi);
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}
	}
	}
	}

	public void notifyDataActivity(int state) {
	if (!checkNotifyPermission("notifyDataActivity()" )) {
	return;
	}
	synchronized (mRecords) {
	mDataActivity = state;
	for (int i = mRecords.size() - 1; i >= 0; i--) {
	Record r = mRecords.get(i);
	if ((r.events & PhoneStateListener.LISTEN_DATA_ACTIVITY) != 0) {
	try {
	r.callback.onDataActivity(state);
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}
	}
	}
	}

	public void notifyDataConnection(int state, boolean isDataConnectivityPossible,
	String reason, String apn, String[] apnTypes, String interfaceName, int networkType) {
	if (!checkNotifyPermission("notifyDataConnection()" )) {
	return;
	}
	synchronized (mRecords) {
	mDataConnectionState = state;
	mDataConnectionPossible = isDataConnectivityPossible;
	mDataConnectionReason = reason;
	mDataConnectionApn = apn;
	mDataConnectionApnTypes = apnTypes;
	mDataConnectionInterfaceName = interfaceName;
	mDataConnectionNetworkType = networkType;
	for (int i = mRecords.size() - 1; i >= 0; i--) {
	Record r = mRecords.get(i);
	if ((r.events & PhoneStateListener.LISTEN_DATA_CONNECTION_STATE) != 0) {
	try {
	r.callback.onDataConnectionStateChanged(state, networkType);
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}
	}
	}
	broadcastDataConnectionStateChanged(state, isDataConnectivityPossible, reason, apn,
	apnTypes, interfaceName);
	}

	public void notifyDataConnectionFailed(String reason) {
	if (!checkNotifyPermission("notifyDataConnectionFailed()")) {
	return;
	}
	/*
	* This is commented out because there is on onDataConnectionFailed callback
	* on PhoneStateListener. There should be
	synchronized (mRecords) {
	mDataConnectionFailedReason = reason;
	final int N = mRecords.size();
	for (int i=N-1; i>=0; i--) {
	Record r = mRecords.get(i);
	if ((r.events & PhoneStateListener.LISTEN_DATA_CONNECTION_FAILED) != 0) {
	// XXX
	}
	}
	}
	*/
	broadcastDataConnectionFailed(reason);
	}

	public void notifyCellLocation(Bundle cellLocation) {
	if (!checkNotifyPermission("notifyCellLocation()")) {
	return;
	}
	synchronized (mRecords) {
	mCellLocation = cellLocation;
	for (int i = mRecords.size() - 1; i >= 0; i--) {
	Record r = mRecords.get(i);
	if ((r.events & PhoneStateListener.LISTEN_CELL_LOCATION) != 0) {
	sendCellLocation(r, cellLocation);
	}
	}
	}
	}

	/**
	* Copy the service state object so they can't mess it up in the local calls
	*/
	public void sendServiceState(Record r, ServiceState state) {
	try {
	r.callback.onServiceStateChanged(new ServiceState(state));
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}

	private void sendCellLocation(Record r, Bundle cellLocation) {
	try {
	r.callback.onCellLocationChanged(new Bundle(cellLocation));
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}

	private void sendSignalStrength(Record r, SignalStrength signalStrength) {
	try {
	r.callback.onSignalStrengthsChanged(new SignalStrength(signalStrength));
	} catch (RemoteException ex) {
	remove(r.binder);
	}
	}

	@Override
	public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
	if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
	!= PackageManager.PERMISSION_GRANTED) {
	pw.println("Permission Denial: can't dump telephony.registry from from pid="
	+ Binder.getCallingPid() + ", uid=" + Binder.getCallingUid());
	return;
	}
	synchronized (mRecords) {
	final int recordCount = mRecords.size();
	pw.println("last known state:");
	pw.println(" mCallState=" + mCallState);
	pw.println(" mCallIncomingNumber=" + mCallIncomingNumber);
	pw.println(" mServiceState=" + mServiceState);
	pw.println(" mSignalStrength=" + mSignalStrength);
	pw.println(" mMessageWaiting=" + mMessageWaiting);
	pw.println(" mCallForwarding=" + mCallForwarding);
	pw.println(" mDataActivity=" + mDataActivity);
	pw.println(" mDataConnectionState=" + mDataConnectionState);
	pw.println(" mDataConnectionPossible=" + mDataConnectionPossible);
	pw.println(" mDataConnectionReason=" + mDataConnectionReason);
	pw.println(" mDataConnectionApn=" + mDataConnectionApn);
	pw.println(" mDataConnectionInterfaceName=" + mDataConnectionInterfaceName);
	pw.println(" mCellLocation=" + mCellLocation);
	pw.println("registrations: count=" + recordCount);
	for (int i = 0; i < recordCount; i++) {
	Record r = mRecords.get(i);
	pw.println(" " + r.pkgForDebug + " 0x" + Integer.toHexString(r.events));
	}
	}
	}

	//
	// the legacy intent broadcasting
	//

	private void broadcastServiceStateChanged(ServiceState state) {
	long ident = Binder.clearCallingIdentity();
	try {
	mBatteryStats.notePhoneState(state.getState());
	} catch (RemoteException re) {
	// Can't do much
	} finally {
	Binder.restoreCallingIdentity(ident);
	}

	Intent intent = new Intent(TelephonyIntents.ACTION_SERVICE_STATE_CHANGED);
	intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
	Bundle data = new Bundle();
	state.fillInNotifierBundle(data);
	intent.putExtras(data);
	mContext.sendStickyBroadcast(intent);
	}

	private void broadcastSignalStrengthChanged(SignalStrength signalStrength) {
	long ident = Binder.clearCallingIdentity();
	try {
	mBatteryStats.notePhoneSignalStrength(signalStrength);
	} catch (RemoteException e) {
	/* The remote entity disappeared, we can safely ignore the exception. */
	} finally {
	Binder.restoreCallingIdentity(ident);
	}

	Intent intent = new Intent(TelephonyIntents.ACTION_SIGNAL_STRENGTH_CHANGED);
	intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
	Bundle data = new Bundle();
	signalStrength.fillInNotifierBundle(data);
	intent.putExtras(data);
	mContext.sendStickyBroadcast(intent);
	}

	private void broadcastCallStateChanged(int state, String incomingNumber) {
	long ident = Binder.clearCallingIdentity();
	try {
	if (state == TelephonyManager.CALL_STATE_IDLE) {
	mBatteryStats.notePhoneOff();
	} else {
	mBatteryStats.notePhoneOn();
	}
	} catch (RemoteException e) {
	/* The remote entity disappeared, we can safely ignore the exception. */
	} finally {
	Binder.restoreCallingIdentity(ident);
	}

	Intent intent = new Intent(TelephonyManager.ACTION_PHONE_STATE_CHANGED);
	intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
	intent.putExtra(Phone.STATE_KEY, DefaultPhoneNotifier.convertCallState(state).toString());
	if (!TextUtils.isEmpty(incomingNumber)) {
	intent.putExtra(TelephonyManager.EXTRA_INCOMING_NUMBER, incomingNumber);
	}
	mContext.sendBroadcast(intent, android.Manifest.permission.READ_PHONE_STATE);
	}

	private void broadcastDataConnectionStateChanged(int state,
	boolean isDataConnectivityPossible,
	String reason, String apn, String[] apnTypes, String interfaceName) {
	// Note: not reporting to the battery stats service here, because the
	// status bar takes care of that after taking into account all of the
	// required info.
	Intent intent = new Intent(TelephonyIntents.ACTION_ANY_DATA_CONNECTION_STATE_CHANGED);
	intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
	intent.putExtra(Phone.STATE_KEY, DefaultPhoneNotifier.convertDataState(state).toString());
	if (!isDataConnectivityPossible) {
	intent.putExtra(Phone.NETWORK_UNAVAILABLE_KEY, true);
	}
	if (reason != null) {
	intent.putExtra(Phone.STATE_CHANGE_REASON_KEY, reason);
	}
	intent.putExtra(Phone.DATA_APN_KEY, apn);
	String types = new String("");
	if (apnTypes.length > 0) {
	types = apnTypes[0];
	for (int i = 1; i < apnTypes.length; i++) {
	types = types+","+apnTypes[i];
	}
	}
	intent.putExtra(Phone.DATA_APN_TYPES_KEY, types);
	intent.putExtra(Phone.DATA_IFACE_NAME_KEY, interfaceName);
	mContext.sendStickyBroadcast(intent);
	}

	private void broadcastDataConnectionFailed(String reason) {
	Intent intent = new Intent(TelephonyIntents.ACTION_DATA_CONNECTION_FAILED);
	intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
	intent.putExtra(Phone.FAILURE_REASON_KEY, reason);
	mContext.sendStickyBroadcast(intent);
	}

	private boolean checkNotifyPermission(String method) {
	if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
	== PackageManager.PERMISSION_GRANTED) {
	return true;
	}
	String msg = "Modify Phone State Permission Denial: " + method + " from pid="
	+ Binder.getCallingPid() + ", uid=" + Binder.getCallingUid();
	Slog.w(TAG, msg);
	return false;
	}

	private void checkListenerPermission(int events) {
	if ((events & PhoneStateListener.LISTEN_CELL_LOCATION) != 0) {
	mContext.enforceCallingOrSelfPermission(
	android.Manifest.permission.ACCESS_COARSE_LOCATION, null);

	}

	if ((events & PHONE_STATE_PERMISSION_MASK) != 0) {
	mContext.enforceCallingOrSelfPermission(
	android.Manifest.permission.READ_PHONE_STATE, null);
	}
	}
	}