| /* |
| * Copyright (C) 2020 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.location.injector; |
| |
| import static com.android.server.location.LocationManagerService.TAG; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.SystemClock; |
| import android.telephony.TelephonyCallback; |
| import android.telephony.TelephonyManager; |
| import android.util.Log; |
| |
| import com.android.server.FgThread; |
| |
| import java.util.Objects; |
| |
| /** |
| * Provides helpers for emergency sessions. |
| */ |
| public class SystemEmergencyHelper extends EmergencyHelper { |
| |
| private final Context mContext; |
| private final EmergencyCallTelephonyCallback mEmergencyCallTelephonyCallback = |
| new EmergencyCallTelephonyCallback(); |
| |
| TelephonyManager mTelephonyManager; |
| |
| boolean mIsInEmergencyCall; |
| long mEmergencyCallEndRealtimeMs = Long.MIN_VALUE; |
| |
| public SystemEmergencyHelper(Context context) { |
| mContext = context; |
| } |
| |
| /** Called when system is ready. */ |
| public synchronized void onSystemReady() { |
| if (mTelephonyManager != null) { |
| return; |
| } |
| |
| mTelephonyManager = Objects.requireNonNull( |
| mContext.getSystemService(TelephonyManager.class)); |
| |
| // TODO: this doesn't account for multisim phones |
| |
| mTelephonyManager.registerTelephonyCallback(FgThread.getExecutor(), |
| mEmergencyCallTelephonyCallback); |
| mContext.registerReceiver(new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (!Intent.ACTION_NEW_OUTGOING_CALL.equals(intent.getAction())) { |
| return; |
| } |
| |
| synchronized (SystemEmergencyHelper.this) { |
| try { |
| mIsInEmergencyCall = mTelephonyManager.isEmergencyNumber( |
| intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER)); |
| } catch (IllegalStateException e) { |
| Log.w(TAG, "Failed to call TelephonyManager.isEmergencyNumber().", e); |
| } |
| } |
| } |
| }, new IntentFilter(Intent.ACTION_NEW_OUTGOING_CALL)); |
| } |
| |
| @Override |
| public synchronized boolean isInEmergency(long extensionTimeMs) { |
| if (mTelephonyManager == null) { |
| return false; |
| } |
| |
| boolean isInExtensionTime = mEmergencyCallEndRealtimeMs != Long.MIN_VALUE |
| && (SystemClock.elapsedRealtime() - mEmergencyCallEndRealtimeMs) < extensionTimeMs; |
| |
| return mIsInEmergencyCall |
| || isInExtensionTime |
| || mTelephonyManager.getEmergencyCallbackMode() |
| || mTelephonyManager.isInEmergencySmsMode(); |
| } |
| |
| private class EmergencyCallTelephonyCallback extends TelephonyCallback implements |
| TelephonyCallback.CallStateListener{ |
| |
| EmergencyCallTelephonyCallback() {} |
| |
| @Override |
| public void onCallStateChanged(int state) { |
| if (state == TelephonyManager.CALL_STATE_IDLE) { |
| synchronized (SystemEmergencyHelper.this) { |
| if (mIsInEmergencyCall) { |
| mEmergencyCallEndRealtimeMs = SystemClock.elapsedRealtime(); |
| mIsInEmergencyCall = false; |
| } |
| } |
| } |
| } |
| } |
| } |