services/core/java/com/android/server/location/GnssConfiguration.java - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2019 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;

 import android.content.Context;
 import android.os.PersistableBundle;
 import android.os.SystemProperties;
 import android.telephony.CarrierConfigManager;
 import android.telephony.SubscriptionManager;
 import android.text.TextUtils;
 import android.util.Log;
 import android.util.StatsLog;

 import libcore.io.IoUtils;

 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Properties;

 /**
  * A utility class to hold GNSS configuration properties.
  *
  * The trigger to load/reload the configuration parameters should be managed by the class
  * that owns an instance of this class.
  *
  * Instances of this class are not thread-safe and should either be used from a single thread
  * or with external synchronization when used by multiple threads.
  */
 class GnssConfiguration {
     private static final String TAG = "GnssConfiguration";

     private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);

     //TODO(b/33112647): Create gps_debug.conf with commented career parameters.
     private static final String DEBUG_PROPERTIES_FILE = "/etc/gps_debug.conf";

     // config.xml properties
     private static final String CONFIG_SUPL_HOST = "SUPL_HOST";
     private static final String CONFIG_SUPL_PORT = "SUPL_PORT";
     private static final String CONFIG_C2K_HOST = "C2K_HOST";
     private static final String CONFIG_C2K_PORT = "C2K_PORT";
     private static final String CONFIG_SUPL_VER = "SUPL_VER";
     private static final String CONFIG_SUPL_MODE = "SUPL_MODE";
     private static final String CONFIG_SUPL_ES = "SUPL_ES";
     private static final String CONFIG_LPP_PROFILE = "LPP_PROFILE";
     private static final String CONFIG_A_GLONASS_POS_PROTOCOL_SELECT =
             "A_GLONASS_POS_PROTOCOL_SELECT";
     private static final String CONFIG_USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL =
             "USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL";
     private static final String CONFIG_GPS_LOCK = "GPS_LOCK";
     private static final String CONFIG_ES_EXTENSION_SEC = "ES_EXTENSION_SEC";
     public static final String CONFIG_NFW_PROXY_APPS = "NFW_PROXY_APPS";

     // Limit on NI emergency mode time extension after emergency sessions ends
     private static final int MAX_EMERGENCY_MODE_EXTENSION_SECONDS = 300;  // 5 minute maximum

     // Persist property for LPP_PROFILE
     static final String LPP_PROFILE = "persist.sys.gps.lpp";

     // Represents an HAL interface version. Instances of this class are created in the JNI layer
     // and returned through native methods.
     private static class HalInterfaceVersion {
         final int mMajor;
         final int mMinor;

         HalInterfaceVersion(int major, int minor) {
             mMajor = major;
             mMinor = minor;
         }
     }

     /**
      * Properties loaded from PROPERTIES_FILE.
      */
     private Properties mProperties;

     private int mEsExtensionSec = 0;

     private final Context mContext;

     GnssConfiguration(Context context) {
         mContext = context;
         mProperties = new Properties();
     }

     /**
      * Returns the full set of properties loaded.
      */
     Properties getProperties() {
         return mProperties;
     }

     /**
      * Returns the value of config parameter ES_EXTENSION_SEC. The value is range checked
      * and constrained to min/max limits.
      */
     int getEsExtensionSec() {
         return mEsExtensionSec;
     }

     /**
      * Returns the value of config parameter SUPL_HOST or {@code null} if no value is
      * provided.
      */
     String getSuplHost() {
         return mProperties.getProperty(CONFIG_SUPL_HOST);
     }

     /**
      * Returns the value of config parameter SUPL_PORT or {@code defaultPort} if no value is
      * provided or if there is an error parsing the configured value.
      */
     int getSuplPort(int defaultPort) {
         return getIntConfig(CONFIG_SUPL_PORT, defaultPort);
     }

     /**
      * Returns the value of config parameter C2K_HOST or {@code null} if no value is
      * provided.
      */
     String getC2KHost() {
         return mProperties.getProperty(CONFIG_C2K_HOST);
     }

     /**
      * Returns the value of config parameter C2K_PORT or {@code defaultPort} if no value is
      * provided or if there is an error parsing the configured value.
      */
     int getC2KPort(int defaultPort) {
         return getIntConfig(CONFIG_C2K_PORT, defaultPort);
     }

     /**
      * Returns the value of config parameter SUPL_MODE or {@code defaultMode} if no value is
      * provided or if there is an error parsing the configured value.
      */
     int getSuplMode(int defaultMode) {
         return getIntConfig(CONFIG_SUPL_MODE, defaultMode);
     }

     /**
      * Returns the value of config parameter SUPL_ES or {@code defaultSuplEs} if no value is
      * provided or if there is an error parsing the configured value.
      */
     int getSuplEs(int defaulSuplEs) {
         return getIntConfig(CONFIG_SUPL_ES, defaulSuplEs);
     }

     /**
      * Returns the value of config parameter LPP_PROFILE or {@code null} if no value is
      * provided.
      */
     String getLppProfile() {
         return mProperties.getProperty(CONFIG_LPP_PROFILE);
     }

     /**
      * Returns the list of proxy apps from the value of config parameter NFW_PROXY_APPS or
      * {@Collections.EMPTY_LIST} if no value is provided.
      */
     List<String> getProxyApps() {
         // Space separated list of Android proxy app package names.
         String proxyAppsStr = mProperties.getProperty(CONFIG_NFW_PROXY_APPS);
         if (TextUtils.isEmpty(proxyAppsStr)) {
             return Collections.EMPTY_LIST;
         }

         String[] proxyAppsArray = proxyAppsStr.trim().split("\\s+");
         if (proxyAppsArray.length == 0) {
             return Collections.EMPTY_LIST;
         }

         // TODO(b/122856486): Validate proxy app names so that a system app or some popular app
         //                    with location permission is not specified as a proxy app.
         ArrayList proxyApps = new ArrayList(proxyAppsArray.length);
         for (String proxyApp : proxyAppsArray) {
             proxyApps.add(proxyApp);
         }

         return proxyApps;
     }

     /**
      * Updates the GNSS HAL satellite blacklist.
      */
     void setSatelliteBlacklist(int[] constellations, int[] svids) {
         native_set_satellite_blacklist(constellations, svids);
     }

     interface SetCarrierProperty {
         boolean set(int value);
     }

     /**
      * Loads the GNSS properties from carrier config file followed by the properties from
      * gps debug config file.
      */
     void reloadGpsProperties() {
         if (DEBUG) Log.d(TAG, "Reset GPS properties, previous size = " + mProperties.size());
         loadPropertiesFromCarrierConfig();

         String lpp_prof = SystemProperties.get(LPP_PROFILE);
         if (!TextUtils.isEmpty(lpp_prof)) {
             // override default value of this if lpp_prof is not empty
             mProperties.setProperty(CONFIG_LPP_PROFILE, lpp_prof);
         }
         /*
          * Overlay carrier properties from a debug configuration file.
          */
         loadPropertiesFromGpsDebugConfig(mProperties);

         mEsExtensionSec = getRangeCheckedConfigEsExtensionSec();

         logConfigurations();

         final HalInterfaceVersion gnssConfigurationIfaceVersion =
                 native_get_gnss_configuration_version();
         if (gnssConfigurationIfaceVersion != null) {
             // Set to a range checked value.
             if (isConfigEsExtensionSecSupported(gnssConfigurationIfaceVersion)
                     && !native_set_es_extension_sec(mEsExtensionSec)) {
                 Log.e(TAG, "Unable to set " + CONFIG_ES_EXTENSION_SEC + ": " + mEsExtensionSec);
             }

             Map<String, SetCarrierProperty> map = new HashMap<String, SetCarrierProperty>() {
                 {
                     put(CONFIG_SUPL_VER, GnssConfiguration::native_set_supl_version);
                     put(CONFIG_SUPL_MODE, GnssConfiguration::native_set_supl_mode);

                     if (isConfigSuplEsSupported(gnssConfigurationIfaceVersion)) {
                         put(CONFIG_SUPL_ES, GnssConfiguration::native_set_supl_es);
                     }

                     put(CONFIG_LPP_PROFILE, GnssConfiguration::native_set_lpp_profile);
                     put(CONFIG_A_GLONASS_POS_PROTOCOL_SELECT,
                             GnssConfiguration::native_set_gnss_pos_protocol_select);
                     put(CONFIG_USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL,
                             GnssConfiguration::native_set_emergency_supl_pdn);

                     if (isConfigGpsLockSupported(gnssConfigurationIfaceVersion)) {
                         put(CONFIG_GPS_LOCK, GnssConfiguration::native_set_gps_lock);
                     }
                 }
             };

             for (Entry<String, SetCarrierProperty> entry : map.entrySet()) {
                 String propertyName = entry.getKey();
                 String propertyValueString = mProperties.getProperty(propertyName);
                 if (propertyValueString != null) {
                     try {
                         int propertyValueInt = Integer.decode(propertyValueString);
                         boolean result = entry.getValue().set(propertyValueInt);
                         if (!result) {
                             Log.e(TAG, "Unable to set " + propertyName);
                         }
                     } catch (NumberFormatException e) {
                         Log.e(TAG, "Unable to parse propertyName: " + propertyValueString);
                     }
                 }
             }
         } else if (DEBUG) {
             Log.d(TAG, "Skipped configuration update because GNSS configuration in GPS HAL is not"
                     + " supported");
         }
     }

     private void logConfigurations() {
         StatsLog.write(StatsLog.GNSS_CONFIGURATION_REPORTED,
                 getSuplHost(),
                 getSuplPort(0),
                 getC2KHost(),
                 getC2KPort(0),
                 getIntConfig(CONFIG_SUPL_VER, 0),
                 getSuplMode(0),
                 getSuplEs(0) == 1,
                 getIntConfig(CONFIG_LPP_PROFILE, 0),
                 getIntConfig(CONFIG_A_GLONASS_POS_PROTOCOL_SELECT, 0),
                 getIntConfig(CONFIG_USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL, 0) == 1,
                 getIntConfig(CONFIG_GPS_LOCK, 0),
                 getEsExtensionSec(),
                 mProperties.getProperty(CONFIG_NFW_PROXY_APPS));
     }

     /**
      * Loads GNSS properties from carrier config file.
      */
     void loadPropertiesFromCarrierConfig() {
         CarrierConfigManager configManager = (CarrierConfigManager)
                 mContext.getSystemService(Context.CARRIER_CONFIG_SERVICE);
         if (configManager == null) {
             return;
         }
         PersistableBundle configs = configManager.getConfigForSubId(
                 SubscriptionManager.getDefaultDataSubscriptionId());
         if (configs == null) {
             if (DEBUG) Log.d(TAG, "SIM not ready, use default carrier config.");
             configs = CarrierConfigManager.getDefaultConfig();
         }
         for (String configKey : configs.keySet()) {
             if (configKey.startsWith(CarrierConfigManager.Gps.KEY_PREFIX)) {
                 String key = configKey
                         .substring(CarrierConfigManager.Gps.KEY_PREFIX.length())
                         .toUpperCase();
                 Object value = configs.get(configKey);
                 if (value instanceof String) {
                     // All GPS properties are of String type; convert so.
                     if (DEBUG) Log.d(TAG, "Gps config: " + key + " = " + value);
                     mProperties.setProperty(key, (String) value);
                 }
             }
         }
     }

     private void loadPropertiesFromGpsDebugConfig(Properties properties) {
         try {
             File file = new File(DEBUG_PROPERTIES_FILE);
             FileInputStream stream = null;
             try {
                 stream = new FileInputStream(file);
                 properties.load(stream);
             } finally {
                 IoUtils.closeQuietly(stream);
             }
         } catch (IOException e) {
             if (DEBUG) Log.d(TAG, "Could not open GPS configuration file " + DEBUG_PROPERTIES_FILE);
         }
     }

     private int getRangeCheckedConfigEsExtensionSec() {
         int emergencyExtensionSeconds = getIntConfig(CONFIG_ES_EXTENSION_SEC, 0);
         if (emergencyExtensionSeconds > MAX_EMERGENCY_MODE_EXTENSION_SECONDS) {
             Log.w(TAG, CONFIG_ES_EXTENSION_SEC + ": " + emergencyExtensionSeconds
                     + " too high, reset to " + MAX_EMERGENCY_MODE_EXTENSION_SECONDS);
             emergencyExtensionSeconds = MAX_EMERGENCY_MODE_EXTENSION_SECONDS;
         } else if (emergencyExtensionSeconds < 0) {
             Log.w(TAG, CONFIG_ES_EXTENSION_SEC + ": " + emergencyExtensionSeconds
                     + " is negative, reset to zero.");
             emergencyExtensionSeconds = 0;
         }
         return emergencyExtensionSeconds;
     }

     private int getIntConfig(String configParameter, int defaultValue) {
         String valueString = mProperties.getProperty(configParameter);
         if (TextUtils.isEmpty(valueString)) {
             return defaultValue;
         }
         try {
             return Integer.decode(valueString);
         } catch (NumberFormatException e) {
             Log.e(TAG, "Unable to parse config parameter " + configParameter + " value: "
                     + valueString + ". Using default value: " + defaultValue);
             return defaultValue;
         }
     }

     private static boolean isConfigEsExtensionSecSupported(
             HalInterfaceVersion gnssConfiguartionIfaceVersion) {
         // ES_EXTENSION_SEC is introduced in @2.0::IGnssConfiguration.hal
         return gnssConfiguartionIfaceVersion.mMajor >= 2;
     }

     private static boolean isConfigSuplEsSupported(
             HalInterfaceVersion gnssConfiguartionIfaceVersion) {
         // SUPL_ES is deprecated in @2.0::IGnssConfiguration.hal
         return gnssConfiguartionIfaceVersion.mMajor < 2;
     }

     private static boolean isConfigGpsLockSupported(
             HalInterfaceVersion gnssConfiguartionIfaceVersion) {
         // GPS_LOCK is deprecated in @2.0::IGnssConfiguration.hal
         return gnssConfiguartionIfaceVersion.mMajor < 2;
     }

     private static native HalInterfaceVersion native_get_gnss_configuration_version();

     private static native boolean native_set_supl_version(int version);

     private static native boolean native_set_supl_mode(int mode);

     private static native boolean native_set_supl_es(int es);

     private static native boolean native_set_lpp_profile(int lppProfile);

     private static native boolean native_set_gnss_pos_protocol_select(int gnssPosProtocolSelect);

     private static native boolean native_set_gps_lock(int gpsLock);

     private static native boolean native_set_emergency_supl_pdn(int emergencySuplPdn);

     private static native boolean native_set_satellite_blacklist(int[] constellations, int[] svIds);

     private static native boolean native_set_es_extension_sec(int emergencyExtensionSeconds);
 }
	/*
	* Copyright (C) 2019 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;

	import android.content.Context;
	import android.os.PersistableBundle;
	import android.os.SystemProperties;
	import android.telephony.CarrierConfigManager;
	import android.telephony.SubscriptionManager;
	import android.text.TextUtils;
	import android.util.Log;
	import android.util.StatsLog;

	import libcore.io.IoUtils;

	import java.io.File;
	import java.io.FileInputStream;
	import java.io.IOException;
	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;
	import java.util.Map.Entry;
	import java.util.Properties;

	/**
	* A utility class to hold GNSS configuration properties.
	*
	* The trigger to load/reload the configuration parameters should be managed by the class
	* that owns an instance of this class.
	*
	* Instances of this class are not thread-safe and should either be used from a single thread
	* or with external synchronization when used by multiple threads.
	*/
	class GnssConfiguration {
	private static final String TAG = "GnssConfiguration";

	private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);

	//TODO(b/33112647): Create gps_debug.conf with commented career parameters.
	private static final String DEBUG_PROPERTIES_FILE = "/etc/gps_debug.conf";

	// config.xml properties
	private static final String CONFIG_SUPL_HOST = "SUPL_HOST";
	private static final String CONFIG_SUPL_PORT = "SUPL_PORT";
	private static final String CONFIG_C2K_HOST = "C2K_HOST";
	private static final String CONFIG_C2K_PORT = "C2K_PORT";
	private static final String CONFIG_SUPL_VER = "SUPL_VER";
	private static final String CONFIG_SUPL_MODE = "SUPL_MODE";
	private static final String CONFIG_SUPL_ES = "SUPL_ES";
	private static final String CONFIG_LPP_PROFILE = "LPP_PROFILE";
	private static final String CONFIG_A_GLONASS_POS_PROTOCOL_SELECT =
	"A_GLONASS_POS_PROTOCOL_SELECT";
	private static final String CONFIG_USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL =
	"USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL";
	private static final String CONFIG_GPS_LOCK = "GPS_LOCK";
	private static final String CONFIG_ES_EXTENSION_SEC = "ES_EXTENSION_SEC";
	public static final String CONFIG_NFW_PROXY_APPS = "NFW_PROXY_APPS";

	// Limit on NI emergency mode time extension after emergency sessions ends
	private static final int MAX_EMERGENCY_MODE_EXTENSION_SECONDS = 300; // 5 minute maximum

	// Persist property for LPP_PROFILE
	static final String LPP_PROFILE = "persist.sys.gps.lpp";

	// Represents an HAL interface version. Instances of this class are created in the JNI layer
	// and returned through native methods.
	private static class HalInterfaceVersion {
	final int mMajor;
	final int mMinor;

	HalInterfaceVersion(int major, int minor) {
	mMajor = major;
	mMinor = minor;
	}
	}

	/**
	* Properties loaded from PROPERTIES_FILE.
	*/
	private Properties mProperties;

	private int mEsExtensionSec = 0;

	private final Context mContext;

	GnssConfiguration(Context context) {
	mContext = context;
	mProperties = new Properties();
	}

	/**
	* Returns the full set of properties loaded.
	*/
	Properties getProperties() {
	return mProperties;
	}

	/**
	* Returns the value of config parameter ES_EXTENSION_SEC. The value is range checked
	* and constrained to min/max limits.
	*/
	int getEsExtensionSec() {
	return mEsExtensionSec;
	}

	/**
	* Returns the value of config parameter SUPL_HOST or {@code null} if no value is
	* provided.
	*/
	String getSuplHost() {
	return mProperties.getProperty(CONFIG_SUPL_HOST);
	}

	/**
	* Returns the value of config parameter SUPL_PORT or {@code defaultPort} if no value is
	* provided or if there is an error parsing the configured value.
	*/
	int getSuplPort(int defaultPort) {
	return getIntConfig(CONFIG_SUPL_PORT, defaultPort);
	}

	/**
	* Returns the value of config parameter C2K_HOST or {@code null} if no value is
	* provided.
	*/
	String getC2KHost() {
	return mProperties.getProperty(CONFIG_C2K_HOST);
	}

	/**
	* Returns the value of config parameter C2K_PORT or {@code defaultPort} if no value is
	* provided or if there is an error parsing the configured value.
	*/
	int getC2KPort(int defaultPort) {
	return getIntConfig(CONFIG_C2K_PORT, defaultPort);
	}

	/**
	* Returns the value of config parameter SUPL_MODE or {@code defaultMode} if no value is
	* provided or if there is an error parsing the configured value.
	*/
	int getSuplMode(int defaultMode) {
	return getIntConfig(CONFIG_SUPL_MODE, defaultMode);
	}

	/**
	* Returns the value of config parameter SUPL_ES or {@code defaultSuplEs} if no value is
	* provided or if there is an error parsing the configured value.
	*/
	int getSuplEs(int defaulSuplEs) {
	return getIntConfig(CONFIG_SUPL_ES, defaulSuplEs);
	}

	/**
	* Returns the value of config parameter LPP_PROFILE or {@code null} if no value is
	* provided.
	*/
	String getLppProfile() {
	return mProperties.getProperty(CONFIG_LPP_PROFILE);
	}

	/**
	* Returns the list of proxy apps from the value of config parameter NFW_PROXY_APPS or
	* {@Collections.EMPTY_LIST} if no value is provided.
	*/
	List<String> getProxyApps() {
	// Space separated list of Android proxy app package names.
	String proxyAppsStr = mProperties.getProperty(CONFIG_NFW_PROXY_APPS);
	if (TextUtils.isEmpty(proxyAppsStr)) {
	return Collections.EMPTY_LIST;
	}

	String[] proxyAppsArray = proxyAppsStr.trim().split("\\s+");
	if (proxyAppsArray.length == 0) {
	return Collections.EMPTY_LIST;
	}

	// TODO(b/122856486): Validate proxy app names so that a system app or some popular app
	// with location permission is not specified as a proxy app.
	ArrayList proxyApps = new ArrayList(proxyAppsArray.length);
	for (String proxyApp : proxyAppsArray) {
	proxyApps.add(proxyApp);
	}

	return proxyApps;
	}

	/**
	* Updates the GNSS HAL satellite blacklist.
	*/
	void setSatelliteBlacklist(int[] constellations, int[] svids) {
	native_set_satellite_blacklist(constellations, svids);
	}

	interface SetCarrierProperty {
	boolean set(int value);
	}

	/**
	* Loads the GNSS properties from carrier config file followed by the properties from
	* gps debug config file.
	*/
	void reloadGpsProperties() {
	if (DEBUG) Log.d(TAG, "Reset GPS properties, previous size = " + mProperties.size());
	loadPropertiesFromCarrierConfig();

	String lpp_prof = SystemProperties.get(LPP_PROFILE);
	if (!TextUtils.isEmpty(lpp_prof)) {
	// override default value of this if lpp_prof is not empty
	mProperties.setProperty(CONFIG_LPP_PROFILE, lpp_prof);
	}
	/*
	* Overlay carrier properties from a debug configuration file.
	*/
	loadPropertiesFromGpsDebugConfig(mProperties);

	mEsExtensionSec = getRangeCheckedConfigEsExtensionSec();

	logConfigurations();

	final HalInterfaceVersion gnssConfigurationIfaceVersion =
	native_get_gnss_configuration_version();
	if (gnssConfigurationIfaceVersion != null) {
	// Set to a range checked value.
	if (isConfigEsExtensionSecSupported(gnssConfigurationIfaceVersion)
	&& !native_set_es_extension_sec(mEsExtensionSec)) {
	Log.e(TAG, "Unable to set " + CONFIG_ES_EXTENSION_SEC + ": " + mEsExtensionSec);
	}

	Map<String, SetCarrierProperty> map = new HashMap<String, SetCarrierProperty>() {
	{
	put(CONFIG_SUPL_VER, GnssConfiguration::native_set_supl_version);
	put(CONFIG_SUPL_MODE, GnssConfiguration::native_set_supl_mode);

	if (isConfigSuplEsSupported(gnssConfigurationIfaceVersion)) {
	put(CONFIG_SUPL_ES, GnssConfiguration::native_set_supl_es);
	}

	put(CONFIG_LPP_PROFILE, GnssConfiguration::native_set_lpp_profile);
	put(CONFIG_A_GLONASS_POS_PROTOCOL_SELECT,
	GnssConfiguration::native_set_gnss_pos_protocol_select);
	put(CONFIG_USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL,
	GnssConfiguration::native_set_emergency_supl_pdn);

	if (isConfigGpsLockSupported(gnssConfigurationIfaceVersion)) {
	put(CONFIG_GPS_LOCK, GnssConfiguration::native_set_gps_lock);
	}
	}
	};

	for (Entry<String, SetCarrierProperty> entry : map.entrySet()) {
	String propertyName = entry.getKey();
	String propertyValueString = mProperties.getProperty(propertyName);
	if (propertyValueString != null) {
	try {
	int propertyValueInt = Integer.decode(propertyValueString);
	boolean result = entry.getValue().set(propertyValueInt);
	if (!result) {
	Log.e(TAG, "Unable to set " + propertyName);
	}
	} catch (NumberFormatException e) {
	Log.e(TAG, "Unable to parse propertyName: " + propertyValueString);
	}
	}
	}
	} else if (DEBUG) {
	Log.d(TAG, "Skipped configuration update because GNSS configuration in GPS HAL is not"
	+ " supported");
	}
	}

	private void logConfigurations() {
	StatsLog.write(StatsLog.GNSS_CONFIGURATION_REPORTED,
	getSuplHost(),
	getSuplPort(0),
	getC2KHost(),
	getC2KPort(0),
	getIntConfig(CONFIG_SUPL_VER, 0),
	getSuplMode(0),
	getSuplEs(0) == 1,
	getIntConfig(CONFIG_LPP_PROFILE, 0),
	getIntConfig(CONFIG_A_GLONASS_POS_PROTOCOL_SELECT, 0),
	getIntConfig(CONFIG_USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL, 0) == 1,
	getIntConfig(CONFIG_GPS_LOCK, 0),
	getEsExtensionSec(),
	mProperties.getProperty(CONFIG_NFW_PROXY_APPS));
	}

	/**
	* Loads GNSS properties from carrier config file.
	*/
	void loadPropertiesFromCarrierConfig() {
	CarrierConfigManager configManager = (CarrierConfigManager)
	mContext.getSystemService(Context.CARRIER_CONFIG_SERVICE);
	if (configManager == null) {
	return;
	}
	PersistableBundle configs = configManager.getConfigForSubId(
	SubscriptionManager.getDefaultDataSubscriptionId());
	if (configs == null) {
	if (DEBUG) Log.d(TAG, "SIM not ready, use default carrier config.");
	configs = CarrierConfigManager.getDefaultConfig();
	}
	for (String configKey : configs.keySet()) {
	if (configKey.startsWith(CarrierConfigManager.Gps.KEY_PREFIX)) {
	String key = configKey
	.substring(CarrierConfigManager.Gps.KEY_PREFIX.length())
	.toUpperCase();
	Object value = configs.get(configKey);
	if (value instanceof String) {
	// All GPS properties are of String type; convert so.
	if (DEBUG) Log.d(TAG, "Gps config: " + key + " = " + value);
	mProperties.setProperty(key, (String) value);
	}
	}
	}
	}

	private void loadPropertiesFromGpsDebugConfig(Properties properties) {
	try {
	File file = new File(DEBUG_PROPERTIES_FILE);
	FileInputStream stream = null;
	try {
	stream = new FileInputStream(file);
	properties.load(stream);
	} finally {
	IoUtils.closeQuietly(stream);
	}
	} catch (IOException e) {
	if (DEBUG) Log.d(TAG, "Could not open GPS configuration file " + DEBUG_PROPERTIES_FILE);
	}
	}

	private int getRangeCheckedConfigEsExtensionSec() {
	int emergencyExtensionSeconds = getIntConfig(CONFIG_ES_EXTENSION_SEC, 0);
	if (emergencyExtensionSeconds > MAX_EMERGENCY_MODE_EXTENSION_SECONDS) {
	Log.w(TAG, CONFIG_ES_EXTENSION_SEC + ": " + emergencyExtensionSeconds
	+ " too high, reset to " + MAX_EMERGENCY_MODE_EXTENSION_SECONDS);
	emergencyExtensionSeconds = MAX_EMERGENCY_MODE_EXTENSION_SECONDS;
	} else if (emergencyExtensionSeconds < 0) {
	Log.w(TAG, CONFIG_ES_EXTENSION_SEC + ": " + emergencyExtensionSeconds
	+ " is negative, reset to zero.");
	emergencyExtensionSeconds = 0;
	}
	return emergencyExtensionSeconds;
	}

	private int getIntConfig(String configParameter, int defaultValue) {
	String valueString = mProperties.getProperty(configParameter);
	if (TextUtils.isEmpty(valueString)) {
	return defaultValue;
	}
	try {
	return Integer.decode(valueString);
	} catch (NumberFormatException e) {
	Log.e(TAG, "Unable to parse config parameter " + configParameter + " value: "
	+ valueString + ". Using default value: " + defaultValue);
	return defaultValue;
	}
	}

	private static boolean isConfigEsExtensionSecSupported(
	HalInterfaceVersion gnssConfiguartionIfaceVersion) {
	// ES_EXTENSION_SEC is introduced in @2.0::IGnssConfiguration.hal
	return gnssConfiguartionIfaceVersion.mMajor >= 2;
	}

	private static boolean isConfigSuplEsSupported(
	HalInterfaceVersion gnssConfiguartionIfaceVersion) {
	// SUPL_ES is deprecated in @2.0::IGnssConfiguration.hal
	return gnssConfiguartionIfaceVersion.mMajor < 2;
	}

	private static boolean isConfigGpsLockSupported(
	HalInterfaceVersion gnssConfiguartionIfaceVersion) {
	// GPS_LOCK is deprecated in @2.0::IGnssConfiguration.hal
	return gnssConfiguartionIfaceVersion.mMajor < 2;
	}

	private static native HalInterfaceVersion native_get_gnss_configuration_version();

	private static native boolean native_set_supl_version(int version);

	private static native boolean native_set_supl_mode(int mode);

	private static native boolean native_set_supl_es(int es);

	private static native boolean native_set_lpp_profile(int lppProfile);

	private static native boolean native_set_gnss_pos_protocol_select(int gnssPosProtocolSelect);

	private static native boolean native_set_gps_lock(int gpsLock);

	private static native boolean native_set_emergency_supl_pdn(int emergencySuplPdn);

	private static native boolean native_set_satellite_blacklist(int[] constellations, int[] svIds);

	private static native boolean native_set_es_extension_sec(int emergencyExtensionSeconds);
	}