Implement logic for reacting to package removal (7c0a2964) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/infra/AbstractMasterSystemService.java

+61 −0

Original line number	Diff line number	Diff line
		@@ -1026,6 +1026,15 @@ public abstract class AbstractMasterSystemService<M extends AbstractMasterSystem

		@Override
		public void onPackageRemoved(String packageName, int uid) {
		if (mServiceNameResolver != null
		&& mServiceNameResolver.isConfiguredInMultipleMode()) {
		final int userId = getChangingUserId();
		synchronized (mLock) {
		handlePackageRemovedMultiModeLocked(packageName, userId);
		}
		return;
		}

		synchronized (mLock) {
		final int userId = getChangingUserId();
		final S service = peekServiceForUserLocked(userId);
		@@ -1069,6 +1078,15 @@ public abstract class AbstractMasterSystemService<M extends AbstractMasterSystem
		public void onPackageDataCleared(String packageName, int uid) {
		if (verbose) Slog.v(mTag, "onPackageDataCleared(): " + packageName);
		final int userId = getChangingUserId();

		if (mServiceNameResolver != null
		&& mServiceNameResolver.isConfiguredInMultipleMode()) {
		synchronized (mLock) {
		onServicePackageDataClearedMultiModeLocked(packageName, userId);
		}
		return;
		}

		synchronized (mLock) {
		final S service = peekServiceForUserLocked(userId);
		if (service != null) {
		@@ -1189,6 +1207,49 @@ public abstract class AbstractMasterSystemService<M extends AbstractMasterSystem
		monitor.register(getContext(), null, UserHandle.ALL, true);
		}

		@GuardedBy("mLock")
		@SuppressWarnings("unused")
		protected void onServicePackageDataClearedMultiModeLocked(String packageName, int userId) {
		if (verbose) {
		Slog.v(mTag, "onServicePackageDataClearedMultiModeLocked("
		+ userId + ")");
		}
		}

		@GuardedBy("mLock")
		@SuppressWarnings("unused")
		protected void handlePackageRemovedMultiModeLocked(String packageName, int userId) {
		if (verbose) Slog.v(mTag, "handlePackageRemovedMultiModeLocked(" + userId + ")");
		}

		@GuardedBy("mLock")
		protected void removeServiceFromCache(@NonNull S service, int userId) {
		if (mServicesCacheList.get(userId) != null) {
		mServicesCacheList.get(userId).remove(service);
		}
		}

		@GuardedBy("mLock")
		protected void removeServiceFromMultiModeSettings(String serviceComponentName, int userId) {
		final String serviceSettingsProperty = getServiceSettingsProperty();
		if (serviceSettingsProperty == null \|\| mServiceNameResolver == null
		\|\| !mServiceNameResolver.isConfiguredInMultipleMode()) {
		if (verbose) {
		Slog.v(mTag, "removeServiceFromSettings not implemented "
		+ " for single backend implementation");
		}
		return;
		}
		String[] settingComponentNames = mServiceNameResolver.getServiceNameList(userId);
		List<String> remainingServices = new ArrayList<>();
		for (String settingComponentName : settingComponentNames) {
		if (!settingComponentName.equals(serviceComponentName)) {
		remainingServices.add(settingComponentName);
		}
		}
		mServiceNameResolver.setServiceNameList(remainingServices, userId);
		}

		/**
		* Visitor pattern.
		*

services/core/java/com/android/server/infra/SecureSettingsServiceNameResolver.java

+17 −0

Original line number	Diff line number	Diff line
		@@ -23,6 +23,7 @@ import android.text.TextUtils;
		import android.util.ArraySet;

		import java.io.PrintWriter;
		import java.util.List;
		import java.util.Set;

		/**
		@@ -91,6 +92,22 @@ public final class SecureSettingsServiceNameResolver extends ServiceNameBaseReso
		mContext.getContentResolver(), mProperty, userId);
		}

		@Override
		public void setServiceNameList(List<String> componentNames, int userId) {
		if (componentNames == null \|\| componentNames.isEmpty()) {
		Settings.Secure.putStringForUser(
		mContext.getContentResolver(), mProperty, null, userId);
		return;
		}
		StringBuilder builder = new StringBuilder(componentNames.get(0));
		for (int i = 1; i < componentNames.size(); i++) {
		builder.append(COMPONENT_NAME_SEPARATOR);
		builder.append(componentNames.get(i));
		}
		Settings.Secure.putStringForUser(
		mContext.getContentResolver(), mProperty, builder.toString(), userId);
		}

		private String[] parseColonDelimitedServiceNames(String serviceNames) {
		final Set<String> delimitedServices = new ArraySet<>();
		if (!TextUtils.isEmpty(serviceNames)) {

services/core/java/com/android/server/infra/ServiceNameResolver.java

+7 −1

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ import android.annotation.UserIdInt;
		import com.android.internal.infra.AbstractRemoteService;

		import java.io.PrintWriter;
		import java.util.List;

		/**
		* A helper class used to resolve the name of the app-provided service a
		@@ -30,7 +31,6 @@ import java.io.PrintWriter;
		* @hide
		*/
		public interface ServiceNameResolver {

		/**
		* Listener for name changes.
		*/
		@@ -77,6 +77,12 @@ public interface ServiceNameResolver {
		}
		}

		/**
		* Set the given list of services to the secure setting
		*/
		default void setServiceNameList(List<String> services, int userId) {
		}

		/**
		* Returns whether the resolver is configured to connect to multiple backend services.
		* The default return type is false.

services/credentials/java/com/android/server/credentials/CredentialManagerService.java

+31 −0

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@ import static android.content.Context.CREDENTIAL_SERVICE;
		import android.annotation.NonNull;
		import android.annotation.UserIdInt;
		import android.app.ActivityManager;
		import android.content.ComponentName;
		import android.content.Context;
		import android.content.pm.PackageManager;
		import android.credentials.ClearCredentialStateRequest;
		@@ -42,10 +43,12 @@ import android.os.UserHandle;
		import android.provider.Settings;
		import android.service.credentials.BeginCreateCredentialRequest;
		import android.service.credentials.BeginGetCredentialRequest;
		import android.service.credentials.CredentialProviderInfo;
		import android.text.TextUtils;
		import android.util.Log;
		import android.util.Slog;

		import com.android.internal.annotations.GuardedBy;
		import com.android.server.infra.AbstractMasterSystemService;
		import com.android.server.infra.SecureSettingsServiceNameResolver;

		@@ -122,6 +125,34 @@ public final class CredentialManagerService
		return serviceList;
		}

		@GuardedBy("mLock")
		@SuppressWarnings("GuardedBy") // ErrorProne requires service.mLock which is the same
		// this.mLock
		protected void handlePackageRemovedMultiModeLocked(String packageName, int userId) {
		List<CredentialManagerServiceImpl> services = peekServiceListForUserLocked(userId);
		if (services == null) {
		return;
		}
		CredentialManagerServiceImpl serviceToBeRemoved = null;
		for (CredentialManagerServiceImpl service : services) {
		if (service != null) {
		CredentialProviderInfo credentialProviderInfo =
		service.getCredentialProviderInfo();
		ComponentName componentName = credentialProviderInfo.getServiceInfo()
		.getComponentName();
		if (packageName.equals(componentName.getPackageName())) {
		serviceToBeRemoved = service;
		removeServiceFromMultiModeSettings(componentName.flattenToString(), userId);
		break;
		}
		}
		}
		if (serviceToBeRemoved != null) {
		removeServiceFromCache(serviceToBeRemoved, userId);
		}
		// TODO("Iterate over system services and remove if needed")
		}

		private void runForUser(@NonNull final Consumer<CredentialManagerServiceImpl> c) {
		final int userId = UserHandle.getCallingUserId();
		final long origId = Binder.clearCallingIdentity();

services/credentials/java/com/android/server/credentials/CredentialManagerServiceImpl.java

+24 −1

Original line number	Diff line number	Diff line
		@@ -40,7 +40,7 @@ public final class CredentialManagerServiceImpl extends

		// TODO(b/210531) : Make final when update flow is fixed
		@GuardedBy("mLock")
		private CredentialProviderInfo mInfo;
		@NonNull private CredentialProviderInfo mInfo;

		CredentialManagerServiceImpl(
		@NonNull CredentialManagerService master,
		@@ -108,4 +108,27 @@ public final class CredentialManagerServiceImpl extends
		}
		return false;
		}

		@GuardedBy("mLock")
		public CredentialProviderInfo getCredentialProviderInfo() {
		return mInfo;
		}

		/**
		* Callback called when an app has been updated.
		*
		* @param packageName package of the app being updated.
		*/
		@GuardedBy("mLock")
		protected void handlePackageUpdateLocked(@NonNull String packageName) {
		if (mInfo != null && mInfo.getServiceInfo() != null
		&& mInfo.getServiceInfo().getComponentName()
		.getPackageName().equals(packageName)) {
		try {
		newServiceInfoLocked(mInfo.getServiceInfo().getComponentName());
		} catch (PackageManager.NameNotFoundException e) {
		Log.i(TAG, "Issue while updating serviceInfo: " + e.getMessage());
		}
		}
		}
		}