Grant default permissions to preinstalled VrListenerServices. (98576cf9) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/SystemConfig.java→core/java/com/android/server/SystemConfig.java

+21 −0

Original line number	Diff line number	Diff line
		@@ -19,6 +19,7 @@ package com.android.server;
		import static com.android.internal.util.ArrayUtils.appendInt;

		import android.app.ActivityManager;
		import android.content.ComponentName;
		import android.content.pm.FeatureInfo;
		import android.content.pm.PackageManager;
		import android.os.Environment;
		@@ -115,6 +116,9 @@ public class SystemConfig {
		// These are the packages that should not run under system user
		final ArraySet<String> mSystemUserBlacklistedApps = new ArraySet<>();

		// These are the components that are enabled by default as VR mode listener services.
		final ArraySet<ComponentName> mDefaultVrComponents = new ArraySet<>();

		public static SystemConfig getInstance() {
		synchronized (SystemConfig.class) {
		if (sInstance == null) {
		@@ -168,6 +172,10 @@ public class SystemConfig {
		return mSystemUserBlacklistedApps;
		}

		public ArraySet<ComponentName> getDefaultVrComponents() {
		return mDefaultVrComponents;
		}

		SystemConfig() {
		// Read configuration from system
		readPermissions(Environment.buildPath(
		@@ -431,6 +439,19 @@ public class SystemConfig {
		mSystemUserBlacklistedApps.add(pkgname);
		}
		XmlUtils.skipCurrentTag(parser);
		} else if ("default-enabled-vr-app".equals(name) && allowAppConfigs) {
		String pkgname = parser.getAttributeValue(null, "package");
		String clsname = parser.getAttributeValue(null, "class");
		if (pkgname == null) {
		Slog.w(TAG, "<default-enabled-vr-app without package in " + permFile
		+ " at " + parser.getPositionDescription());
		} else if (clsname == null) {
		Slog.w(TAG, "<default-enabled-vr-app without class in " + permFile
		+ " at " + parser.getPositionDescription());
		} else {
		mDefaultVrComponents.add(new ComponentName(pkgname, clsname));
		}
		XmlUtils.skipCurrentTag(parser);
		} else {
		XmlUtils.skipCurrentTag(parser);
		continue;

packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java

+32 −1

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@ import android.app.ActivityManager;
		import android.app.AppGlobals;
		import android.app.backup.BackupManager;
		import android.content.BroadcastReceiver;
		import android.content.ComponentName;
		import android.content.ContentProvider;
		import android.content.ContentValues;
		import android.content.Context;
		@@ -63,6 +64,7 @@ import com.android.internal.annotations.GuardedBy;
		import com.android.internal.content.PackageMonitor;
		import com.android.internal.os.BackgroundThread;
		import com.android.providers.settings.SettingsState.Setting;
		import com.android.server.SystemConfig;

		import java.io.File;
		import java.io.FileDescriptor;
		@@ -1940,7 +1942,7 @@ public class SettingsProvider extends ContentProvider {
		}

		private final class UpgradeController {
		private static final int SETTINGS_VERSION = 125;
		private static final int SETTINGS_VERSION = 126;

		private final int mUserId;

		@@ -2136,6 +2138,35 @@ public class SettingsProvider extends ContentProvider {
		currentVersion = 125;
		}

		if (currentVersion == 125) {
		// Version 125: Allow OEMs to set the default VR service.
		final SettingsState secureSettings = getSecureSettingsLocked(userId);

		Setting currentSetting = secureSettings.getSettingLocked(
		Settings.Secure.ENABLED_VR_LISTENERS);
		if (currentSetting == null) {
		ArraySet<ComponentName> l =
		SystemConfig.getInstance().getDefaultVrComponents();

		if (l != null && !l.isEmpty()) {
		StringBuilder b = new StringBuilder();
		boolean start = true;
		for (ComponentName c : l) {
		if (!start) {
		b.append(':');
		}
		b.append(c.flattenToString());
		start = false;
		}
		secureSettings.insertSettingLocked(
		Settings.Secure.ENABLED_VR_LISTENERS, b.toString(),
		SettingsState.SYSTEM_PACKAGE_NAME);
		}

		}
		currentVersion = 126;
		}

		// vXXX: Add new settings above this point.

		// Return the current version.

services/core/java/com/android/server/vr/EnabledComponentsObserver.java

+11 −5

Original line number	Diff line number	Diff line
		@@ -227,10 +227,11 @@ public class EnabledComponentsObserver implements SettingChangeListener {
		return userIds;
		}

		private ArraySet<ComponentName> loadComponentNamesForUser(int userId) {
		public static ArraySet<ComponentName> loadComponentNames(PackageManager pm, int userId,
		String serviceName, String permissionName) {

		ArraySet<ComponentName> installed = new ArraySet<>();
		PackageManager pm = mContext.getPackageManager();
		Intent queryIntent = new Intent(mServiceName);
		Intent queryIntent = new Intent(serviceName);
		List<ResolveInfo> installedServices = pm.queryIntentServicesAsUser(
		queryIntent,
		PackageManager.GET_SERVICES \| PackageManager.GET_META_DATA,
		@@ -241,10 +242,10 @@ public class EnabledComponentsObserver implements SettingChangeListener {
		ServiceInfo info = resolveInfo.serviceInfo;

		ComponentName component = new ComponentName(info.packageName, info.name);
		if (!mServicePermission.equals(info.permission)) {
		if (!permissionName.equals(info.permission)) {
		Slog.w(TAG, "Skipping service " + info.packageName + "/" + info.name
		+ ": it does not require the permission "
		+ mServicePermission);
		+ permissionName);
		continue;
		}
		installed.add(component);
		@@ -253,6 +254,11 @@ public class EnabledComponentsObserver implements SettingChangeListener {
		return installed;
		}

		private ArraySet<ComponentName> loadComponentNamesForUser(int userId) {
		return loadComponentNames(mContext.getPackageManager(), userId, mServiceName,
		mServicePermission);
		}

		private ArraySet<ComponentName> loadComponentNamesFromSetting(String settingName,
		int userId) {
		final ContentResolver cr = mContext.getContentResolver();

services/core/java/com/android/server/vr/VrManagerService.java

+264 −41

Original line number	Diff line number	Diff line
		@@ -16,16 +16,23 @@
		package com.android.server.vr;

		import android.app.AppOpsManager;
		import android.app.NotificationManager;
		import android.annotation.NonNull;
		import android.content.Context;
		import android.content.ComponentName;
		import android.content.ContentResolver;
		import android.content.Context;
		import android.content.pm.ApplicationInfo;
		import android.content.pm.PackageManager;
		import android.content.pm.PackageManager.NameNotFoundException;
		import android.os.Binder;
		import android.os.Handler;
		import android.os.IBinder;
		import android.os.IInterface;
		import android.os.Looper;
		import android.os.RemoteException;
		import android.os.UserHandle;
		import android.provider.Settings;
		import android.service.notification.NotificationListenerService;
		import android.service.vr.IVrListener;
		import android.service.vr.VrListenerService;
		import android.util.ArraySet;
		@@ -38,7 +45,9 @@ import com.android.server.vr.EnabledComponentsObserver.EnabledComponentChangeLis
		import com.android.server.utils.ManagedApplicationService;
		import com.android.server.utils.ManagedApplicationService.BinderChecker;

		import java.lang.StringBuilder;
		import java.util.ArrayList;
		import java.util.Collection;
		import java.util.Objects;
		import java.util.Set;

		@@ -53,8 +62,8 @@ import java.util.Set;
		* hardware/libhardware/modules/vr
		* <p/>
		* In general applications may enable or disable VR mode by calling
		* {@link android.app.Activity#setVrMode)}. An application may also implement a service to be run
		* while in VR mode by implementing {@link android.service.vr.VrListenerService}.
		* {@link android.app.Activity#setVrModeEnabled)}. An application may also implement a service to
		* be run while in VR mode by implementing {@link android.service.vr.VrListenerService}.
		*
		* @see {@link android.service.vr.VrListenerService}
		* @see {@link com.android.server.vr.VrManagerInternal}
		@@ -74,13 +83,18 @@ public class VrManagerService extends SystemService implements EnabledComponentC
		private final IBinder mOverlayToken = new Binder();

		// State protected by mLock
		private boolean mVrModeEnabled = false;
		private boolean mVrModeEnabled;
		private final Set<VrStateListener> mListeners = new ArraySet<>();
		private EnabledComponentsObserver mComponentObserver;
		private ManagedApplicationService mCurrentVrService;
		private Context mContext;
		private ComponentName mCurrentVrModeComponent;
		private int mCurrentVrModeUser;
		private boolean mWasDefaultGranted;
		private boolean mGuard;
		private final ArraySet<String> mPreviousToggledListenerSettings = new ArraySet<>();
		private String mPreviousNotificationPolicyAccessPackage;
		private String mPreviousManageOverlayPackage;

		private static final BinderChecker sBinderChecker = new BinderChecker() {
		@Override
		@@ -234,10 +248,12 @@ public class VrManagerService extends SystemService implements EnabledComponentC
		*
		* @return {@code true} if the component/user combination specified is valid.
		*/
		private boolean updateCurrentVrServiceLocked(boolean enabled,
		@NonNull ComponentName component, int userId, ComponentName calling) {
		private boolean updateCurrentVrServiceLocked(boolean enabled, @NonNull ComponentName component,
		int userId, ComponentName calling) {

		boolean sendUpdatedCaller = false;
		final long identity = Binder.clearCallingIdentity();
		try {

		boolean validUserComponent = (mComponentObserver.isValid(component, userId) ==
		EnabledComponentsObserver.NO_ERROR);
		@@ -251,21 +267,29 @@ public class VrManagerService extends SystemService implements EnabledComponentC
		Slog.i(TAG, "Disconnecting " + mCurrentVrService.getComponent() + " for user " +
		mCurrentVrService.getUserId());
		mCurrentVrService.disconnect();
		disableImpliedPermissionsLocked(mCurrentVrService.getComponent(),
		new UserHandle(mCurrentVrService.getUserId()));
		mCurrentVrService = null;
		}
		} else {
		if (mCurrentVrService != null) {
		// Unbind any running service that doesn't match the component/user selection
		if (mCurrentVrService.disconnectIfNotMatching(component, userId)) {
		Slog.i(TAG, "Disconnecting " + mCurrentVrService.getComponent() + " for user " +
		mCurrentVrService.getUserId());
		Slog.i(TAG, "Disconnecting " + mCurrentVrService.getComponent() +
		" for user " + mCurrentVrService.getUserId());
		disableImpliedPermissionsLocked(mCurrentVrService.getComponent(),
		new UserHandle(mCurrentVrService.getUserId()));
		createAndConnectService(component, userId);
		enableImpliedPermissionsLocked(mCurrentVrService.getComponent(),
		new UserHandle(mCurrentVrService.getUserId()));
		sendUpdatedCaller = true;
		}
		// The service with the correct component/user is bound
		} else {
		// Nothing was previously running, bind a new service
		createAndConnectService(component, userId);
		enableImpliedPermissionsLocked(mCurrentVrService.getComponent(),
		new UserHandle(mCurrentVrService.getUserId()));
		sendUpdatedCaller = true;
		}
		}
		@@ -288,7 +312,206 @@ public class VrManagerService extends SystemService implements EnabledComponentC
		}

		return validUserComponent;
		} finally {
		Binder.restoreCallingIdentity(identity);
		}
		}

		/**
		* Enable the permission given in {@link #IMPLIED_VR_LISTENER_PERMISSIONS} for the given
		* component package and user.
		*
		* @param component the component whose package should be enabled.
		* @param userId the user that owns the given component.
		*/
		private void enableImpliedPermissionsLocked(ComponentName component, UserHandle userId) {
		if (mGuard) {
		// Impossible
		throw new IllegalStateException("Enabling permissions without disabling.");
		}
		mGuard = true;

		PackageManager pm = mContext.getPackageManager();

		String pName = component.getPackageName();
		if (pm == null) {
		Slog.e(TAG, "Couldn't set implied permissions for " + pName +
		", PackageManager isn't running");
		return;
		}

		ApplicationInfo info = null;
		try {
		info = pm.getApplicationInfo(pName, PackageManager.GET_META_DATA);
		} catch (NameNotFoundException e) {
		}

		if (info == null) {
		Slog.e(TAG, "Couldn't set implied permissions for " + pName + ", no such package.");
		return;
		}

		if (!(info.isSystemApp() \|\| info.isUpdatedSystemApp())) {
		return; // Application is not pre-installed, avoid setting implied permissions
		}

		mWasDefaultGranted = true;

		grantOverlayAccess(pName, userId);
		grantNotificationPolicyAccess(pName);
		grantNotificationListenerAccess(pName, userId);
		}

		/**
		* Disable the permission given in {@link #IMPLIED_VR_LISTENER_PERMISSIONS} for the given
		* component package and user.
		*
		* @param component the component whose package should be disabled.
		* @param userId the user that owns the given component.
		*/
		private void disableImpliedPermissionsLocked(ComponentName component, UserHandle userId) {
		if (!mGuard) {
		// Impossible
		throw new IllegalStateException("Disabling permissions without enabling.");
		}
		mGuard = false;

		PackageManager pm = mContext.getPackageManager();

		if (pm == null) {
		Slog.e(TAG, "Couldn't remove implied permissions for " + component +
		", PackageManager isn't running");
		return;
		}

		String pName = component.getPackageName();
		if (mWasDefaultGranted) {
		revokeOverlayAccess(userId);
		revokeNotificationPolicyAccess(pName);
		revokeNotificiationListenerAccess();
		mWasDefaultGranted = false;
		}

		}

		private void grantOverlayAccess(String pkg, UserHandle userId) {
		PackageManager pm = mContext.getPackageManager();
		boolean prev = (PackageManager.PERMISSION_GRANTED ==
		pm.checkPermission(android.Manifest.permission.SYSTEM_ALERT_WINDOW, pkg));
		mPreviousManageOverlayPackage = null;
		if (!prev) {
		pm.grantRuntimePermission(pkg, android.Manifest.permission.SYSTEM_ALERT_WINDOW,
		userId);
		mPreviousManageOverlayPackage = pkg;
		}
		}

		private void revokeOverlayAccess(UserHandle userId) {
		PackageManager pm = mContext.getPackageManager();
		if (mPreviousManageOverlayPackage != null) {
		pm.revokeRuntimePermission(mPreviousManageOverlayPackage,
		android.Manifest.permission.SYSTEM_ALERT_WINDOW, userId);
		mPreviousManageOverlayPackage = null;
		}
		}


		private void grantNotificationPolicyAccess(String pkg) {
		NotificationManager nm = mContext.getSystemService(NotificationManager.class);
		boolean prev = nm.isNotificationPolicyAccessGrantedForPackage(pkg);
		mPreviousNotificationPolicyAccessPackage = null;
		if (!prev) {
		mPreviousNotificationPolicyAccessPackage = pkg;
		nm.setNotificationPolicyAccessGranted(pkg, true);
		}
		}

		private void revokeNotificationPolicyAccess(String pkg) {
		NotificationManager nm = mContext.getSystemService(NotificationManager.class);
		if (mPreviousNotificationPolicyAccessPackage != null) {
		nm.setNotificationPolicyAccessGranted(mPreviousNotificationPolicyAccessPackage, false);
		mPreviousNotificationPolicyAccessPackage = null;
		}
		}

		private void grantNotificationListenerAccess(String pkg, UserHandle userId) {
		PackageManager pm = mContext.getPackageManager();
		ArraySet<ComponentName> possibleServices = EnabledComponentsObserver.loadComponentNames(pm,
		userId.getIdentifier(), NotificationListenerService.SERVICE_INTERFACE,
		android.Manifest.permission.BIND_NOTIFICATION_LISTENER_SERVICE);
		ContentResolver resolver = mContext.getContentResolver();

		ArraySet<String> current = getCurrentNotifListeners(resolver);

		mPreviousToggledListenerSettings.clear();

		for (ComponentName c : possibleServices) {
		String flatName = c.flattenToString();
		if (Objects.equals(c.getPackageName(), pkg)
		&& !current.contains(flatName)) {
		mPreviousToggledListenerSettings.add(flatName);
		current.add(flatName);
		}
		}

		if (current.size() > 0) {
		String flatSettings = formatSettings(current);
		Settings.Secure.putString(resolver, Settings.Secure.ENABLED_NOTIFICATION_LISTENERS,
		flatSettings);
		}
		}

		private void revokeNotificiationListenerAccess() {
		if (mPreviousToggledListenerSettings.isEmpty()) {
		return;
		}

		ContentResolver resolver = mContext.getContentResolver();
		ArraySet<String> current = getCurrentNotifListeners(resolver);

		current.removeAll(mPreviousToggledListenerSettings);
		mPreviousToggledListenerSettings.clear();

		String flatSettings = formatSettings(current);
		Settings.Secure.putString(resolver, Settings.Secure.ENABLED_NOTIFICATION_LISTENERS,
		flatSettings);
		}

		private ArraySet<String> getCurrentNotifListeners(ContentResolver resolver) {
		String flat = Settings.Secure.getString(resolver,
		Settings.Secure.ENABLED_NOTIFICATION_LISTENERS);

		ArraySet<String> current = new ArraySet<>();
		if (flat != null) {
		String[] allowed = flat.split(":");
		for (String s : allowed) {
		current.add(s);
		}
		}
		return current;
		}

		private static String formatSettings(Collection<String> c) {
		if (c == null \|\| c.isEmpty()) {
		return "";
		}

		StringBuilder b = new StringBuilder();
		boolean start = true;
		for (String s : c) {
		if ("".equals(s)) {
		continue;
		}
		if (!start) {
		b.append(':');
		}
		b.append(s);
		start = false;
		}
		return b.toString();
		}



		private void createAndConnectService(@NonNull ComponentName component, int userId) {
		mCurrentVrService = VrManagerService.create(mContext, component, userId);