/*
* 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.Log;
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) {
// Log.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.noteAirplaneMode(state.getState() == ServiceState.STATE_POWER_OFF);
} catch (RemoteException re) {
// Can't do much
} finally {
Binder.restoreCallingIdentity(ident);
}
Intent intent = new Intent(TelephonyIntents.ACTION_SERVICE_STATE_CHANGED);
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);
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.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.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.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();
Log.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);
}
}
}