Merge "Non-framework location access visibility and control (framework3)" (40f2c989) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/location/GnssVisibilityControl.java

+141 −18

Original line number	Diff line number	Diff line
		@@ -19,9 +19,15 @@ package com.android.server.location;
		import android.annotation.SuppressLint;
		import android.app.AppOpsManager;
		import android.content.ActivityNotFoundException;
		import android.content.BroadcastReceiver;
		import android.content.Context;
		import android.content.Intent;
		import android.content.IntentFilter;
		import android.content.pm.PackageManager;
		import android.net.ConnectivityManager;
		import android.net.Network;
		import android.net.NetworkCapabilities;
		import android.net.NetworkRequest;
		import android.os.Handler;
		import android.os.Looper;
		import android.os.PowerManager;
		@@ -55,6 +61,8 @@ class GnssVisibilityControl {
		private static final String LOCATION_PERMISSION_NAME =
		"android.permission.ACCESS_FINE_LOCATION";

		private static final String[] NO_LOCATION_ENABLED_PROXY_APPS = new String[0];

		// Wakelocks
		private static final String WAKELOCK_KEY = TAG;
		private static final long WAKELOCK_TIMEOUT_MILLIS = 60 * 1000;
		@@ -66,13 +74,16 @@ class GnssVisibilityControl {
		private final Handler mHandler;
		private final Context mContext;

		private boolean mIsMasterLocationSettingsEnabled = true;
		private boolean mIsOnRoamingNetwork = false;

		// Number of non-framework location access proxy apps is expected to be small (< 5).
		private static final int HASH_MAP_INITIAL_CAPACITY_PROXY_APP_TO_LOCATION_PERMISSIONS = 7;
		private HashMap<String, Boolean> mProxyAppToLocationPermissions = new HashMap<>(
		HASH_MAP_INITIAL_CAPACITY_PROXY_APP_TO_LOCATION_PERMISSIONS);

		private PackageManager.OnPermissionsChangedListener mOnPermissionsChangedListener =
		uid -> postEvent(() -> handlePermissionsChanged(uid));
		uid -> runOnHandler(() -> handlePermissionsChanged(uid));

		GnssVisibilityControl(Context context, Looper looper) {
		mContext = context;
		@@ -81,8 +92,15 @@ class GnssVisibilityControl {
		mHandler = new Handler(looper);
		mAppOps = mContext.getSystemService(AppOpsManager.class);
		mPackageManager = mContext.getPackageManager();

		// Set to empty proxy app list initially until the configuration properties are loaded.
		updateNfwLocationAccessProxyAppsInGnssHal();

		// Listen for proxy app package installation, removal events.
		listenForProxyAppsPackageUpdates();
		listenForRoamingNetworkUpdate();

		// TODO(b/122855984): Handle global location settings on/off.
		// TODO(b/122856189): Handle roaming case.
		}

		void updateProxyApps(List<String> nfwLocationAccessProxyApps) {
		@@ -90,18 +108,68 @@ class GnssVisibilityControl {
		// but rather piggy backs on the GnssLocationProvider SIM_STATE_CHANGED handling
		// so that the order of processing is preserved. GnssLocationProvider should
		// first load the new config parameters for the new SIM and then call this method.
		postEvent(() -> handleSubscriptionOrSimChanged(nfwLocationAccessProxyApps));
		runOnHandler(() -> handleUpdateProxyApps(nfwLocationAccessProxyApps));
		}

		void masterLocationSettingsUpdated(boolean enabled) {
		runOnHandler(() -> handleMasterLocationSettingsUpdated(enabled));
		}

		void reportNfwNotification(String proxyAppPackageName, byte protocolStack,
		String otherProtocolStackName, byte requestor, String requestorId, byte responseType,
		boolean inEmergencyMode, boolean isCachedLocation) {
		postEvent(() -> handleNfwNotification(
		runOnHandler(() -> handleNfwNotification(
		new NfwNotification(proxyAppPackageName, protocolStack, otherProtocolStackName,
		requestor, requestorId, responseType, inEmergencyMode, isCachedLocation)));
		}

		private void handleSubscriptionOrSimChanged(List<String> nfwLocationAccessProxyApps) {
		private void listenForProxyAppsPackageUpdates() {
		IntentFilter intentFilter = new IntentFilter();
		intentFilter.addAction(Intent.ACTION_PACKAGE_ADDED);
		intentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);
		intentFilter.addAction(Intent.ACTION_PACKAGE_REPLACED);
		intentFilter.addDataScheme("package");
		mContext.registerReceiverAsUser(new BroadcastReceiver() {
		@Override
		public void onReceive(Context context, Intent intent) {
		String action = intent.getAction();
		if (action == null) {
		return;
		}

		switch (action) {
		case Intent.ACTION_PACKAGE_ADDED:
		case Intent.ACTION_PACKAGE_REMOVED:
		case Intent.ACTION_PACKAGE_REPLACED:
		String pkgName = intent.getData().getEncodedSchemeSpecificPart();
		handleProxyAppPackageUpdate(pkgName, action);
		break;
		}
		}
		}, UserHandle.ALL, intentFilter, null, mHandler);
		}

		private void handleProxyAppPackageUpdate(String pkgName, String action) {
		final Boolean locationPermission = mProxyAppToLocationPermissions.get(pkgName);
		// pkgName is not one of the proxy apps in our list.
		if (locationPermission == null) {
		return;
		}

		Log.i(TAG, "Proxy app " + pkgName + " package changed: " + action);
		final boolean updatedLocationPermission = hasLocationPermission(pkgName);
		if (locationPermission != updatedLocationPermission) {
		// Permission changed. So, update the GNSS HAL with the updated list.
		mProxyAppToLocationPermissions.put(pkgName, updatedLocationPermission);
		updateNfwLocationAccessProxyAppsInGnssHal();
		}
		}

		private void handleUpdateProxyApps(List<String> nfwLocationAccessProxyApps) {
		if (!isProxyAppListUpdated(nfwLocationAccessProxyApps)) {
		return;
		}

		if (nfwLocationAccessProxyApps.isEmpty()) {
		// Stop listening for app permission changes. Clear the app list in GNSS HAL.
		if (!mProxyAppToLocationPermissions.isEmpty()) {
		@@ -125,6 +193,27 @@ class GnssVisibilityControl {
		updateNfwLocationAccessProxyAppsInGnssHal();
		}

		private boolean isProxyAppListUpdated(List<String> nfwLocationAccessProxyApps) {
		if (nfwLocationAccessProxyApps.size() != mProxyAppToLocationPermissions.size()) {
		return true;
		}

		for (String nfwLocationAccessProxyApp : nfwLocationAccessProxyApps) {
		if (!mProxyAppToLocationPermissions.containsKey(nfwLocationAccessProxyApp)) {
		return true;
		}
		}

		return false;
		}

		private void handleMasterLocationSettingsUpdated(boolean enabled) {
		mIsMasterLocationSettingsEnabled = enabled;
		Log.i(TAG, "Master location settings switch changed to "
		+ (enabled ? "enabled" : "disabled"));
		updateNfwLocationAccessProxyAppsInGnssHal();
		}

		// Represents NfwNotification structure in IGnssVisibilityControlCallback.hal
		private static class NfwNotification {
		private static final String KEY_PROTOCOL_STACK = "ProtocolStack";
		@@ -149,7 +238,7 @@ class GnssVisibilityControl {
		private final boolean mInEmergencyMode;
		private final boolean mIsCachedLocation;

		NfwNotification(String proxyAppPackageName, byte protocolStack,
		private NfwNotification(String proxyAppPackageName, byte protocolStack,
		String otherProtocolStackName, byte requestor, String requestorId,
		byte responseType, boolean inEmergencyMode, boolean isCachedLocation) {
		mProxyAppPackageName = proxyAppPackageName;
		@@ -162,7 +251,7 @@ class GnssVisibilityControl {
		mIsCachedLocation = isCachedLocation;
		}

		void copyFieldsToIntent(Intent intent) {
		private void copyFieldsToIntent(Intent intent) {
		intent.putExtra(KEY_PROTOCOL_STACK, mProtocolStack);
		if (!TextUtils.isEmpty(mOtherProtocolStackName)) {
		intent.putExtra(KEY_OTHER_PROTOCOL_STACK_NAME, mOtherProtocolStackName);
		@@ -188,7 +277,7 @@ class GnssVisibilityControl {
		mRequestor, mRequestorId, mResponseType, mInEmergencyMode, mIsCachedLocation);
		}

		String getResponseTypeAsString() {
		private String getResponseTypeAsString() {
		switch (mResponseType) {
		case NFW_RESPONSE_TYPE_REJECTED:
		return "REJECTED";
		@@ -246,6 +335,24 @@ class GnssVisibilityControl {
		}

		private void updateNfwLocationAccessProxyAppsInGnssHal() {
		final String[] locationPermissionEnabledProxyApps = shouldDisableNfwLocationAccess()
		? NO_LOCATION_ENABLED_PROXY_APPS : getLocationPermissionEnabledProxyApps();
		final String proxyAppsStr = Arrays.toString(locationPermissionEnabledProxyApps);
		Log.i(TAG, "Updating non-framework location access proxy apps in the GNSS HAL to: "
		+ proxyAppsStr);
		boolean result = native_enable_nfw_location_access(locationPermissionEnabledProxyApps);
		if (!result) {
		Log.e(TAG, "Failed to update non-framework location access proxy apps in the"
		+ " GNSS HAL to: " + proxyAppsStr);
		}
		}

		private boolean shouldDisableNfwLocationAccess() {
		// TODO(b/122856189): Add disableWhenRoaming configuration per proxy app.
		return mIsOnRoamingNetwork \|\| !mIsMasterLocationSettingsEnabled;
		}

		private String[] getLocationPermissionEnabledProxyApps() {
		// Get a count of proxy apps with location permission enabled to array creation size.
		int countLocationPermissionEnabledProxyApps = 0;
		for (Boolean hasLocationPermissionEnabled : mProxyAppToLocationPermissions.values()) {
		@@ -264,15 +371,7 @@ class GnssVisibilityControl {
		locationPermissionEnabledProxyApps[i++] = proxyApp;
		}
		}

		String proxyAppsStr = Arrays.toString(locationPermissionEnabledProxyApps);
		Log.i(TAG, "Updating non-framework location access proxy apps in the GNSS HAL to: "
		+ proxyAppsStr);
		boolean result = native_enable_nfw_location_access(locationPermissionEnabledProxyApps);
		if (!result) {
		Log.e(TAG, "Failed to update non-framework location access proxy apps in the"
		+ " GNSS HAL to: " + proxyAppsStr);
		}
		return locationPermissionEnabledProxyApps;
		}

		private void handleNfwNotification(NfwNotification nfwNotification) {
		@@ -360,7 +459,31 @@ class GnssVisibilityControl {
		isPermissionMismatched);
		}

		private void postEvent(Runnable event) {
		private void listenForRoamingNetworkUpdate() {
		// Register for network capabilities changes to monitor roaming changes.
		ConnectivityManager mConnMgr = (ConnectivityManager) mContext.getSystemService(
		Context.CONNECTIVITY_SERVICE);
		NetworkRequest.Builder networkRequestBuilder = new NetworkRequest.Builder();
		networkRequestBuilder.addCapability(NetworkCapabilities.TRANSPORT_CELLULAR);
		NetworkRequest networkRequest = networkRequestBuilder.build();
		mConnMgr.registerNetworkCallback(networkRequest,
		new ConnectivityManager.NetworkCallback() {
		@Override
		public void onCapabilitiesChanged(Network network,
		NetworkCapabilities capabilities) {
		boolean isRoaming = !capabilities.hasTransport(
		NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING);
		// No locking required for this test and set because the callback
		// runs in mHandler thread.
		if (mIsOnRoamingNetwork != isRoaming) {
		mIsOnRoamingNetwork = isRoaming;
		updateNfwLocationAccessProxyAppsInGnssHal();
		}
		}
		}, mHandler);
		}

		private void runOnHandler(Runnable event) {
		// Hold a wake lock until this message is delivered.
		// Note that this assumes the message will not be removed from the queue before
		// it is handled (otherwise the wake lock would be leaked).