Add local transport parameters for transport flags GTS test (eaa78b92) · Commits · e / os / android_frameworks_base

core/java/android/app/backup/BackupAgent.java

+10 −0

Original line number	Diff line number	Diff line
		@@ -163,6 +163,16 @@ public abstract class BackupAgent extends ContextWrapper {
		*/
		public static final int FLAG_DEVICE_TO_DEVICE_TRANSFER = 2;

		/**
		* Flag for {@link BackupDataOutput#getTransportFlags()} and
		* {@link FullBackupDataOutput#getTransportFlags()} only.
		*
		* <p>Used for internal testing only. Do not check this flag in production code.
		*
		* @hide
		*/
		public static final int FLAG_FAKE_CLIENT_SIDE_ENCRYPTION_ENABLED = 1 << 31;

		Handler mHandler = null;

		Handler getHandler() {

core/java/android/provider/Settings.java

+18 −0

Original line number	Diff line number	Diff line
		@@ -7679,6 +7679,24 @@ public final class Settings {
		*/
		public static final String BACKUP_MANAGER_CONSTANTS = "backup_manager_constants";


		/**
		* Local transport parameters so we can configure it for tests.
		* This is encoded as a key=value list, separated by commas.
		*
		* The following keys are supported:
		*
		* <pre>
		* fake_encryption_flag (boolean)
		* </pre>
		*
		* <p>
		* Type: string
		* @hide
		*/
		public static final String BACKUP_LOCAL_TRANSPORT_PARAMETERS =
		"backup_local_transport_parameters";

		/**
		* Flag to set if the system should predictively attempt to re-enable Bluetooth while
		* the user is driving.

core/java/com/android/internal/backup/LocalTransport.java

+19 −1

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@

		package com.android.internal.backup;

		import android.app.backup.BackupAgent;
		import android.app.backup.BackupDataInput;
		import android.app.backup.BackupDataOutput;
		import android.app.backup.BackupTransport;
		@@ -98,6 +99,7 @@ public class LocalTransport extends BackupTransport {
		private FileInputStream mCurFullRestoreStream;
		private FileOutputStream mFullRestoreSocketStream;
		private byte[] mFullRestoreBuffer;
		private final LocalTransportParameters mParameters;

		private void makeDataDirs() {
		mCurrentSetDir.mkdirs();
		@@ -105,11 +107,16 @@ public class LocalTransport extends BackupTransport {
		mCurrentSetIncrementalDir.mkdir();
		}

		public LocalTransport(Context context) {
		public LocalTransport(Context context, LocalTransportParameters parameters) {
		mContext = context;
		mParameters = parameters;
		makeDataDirs();
		}

		LocalTransportParameters getParameters() {
		return mParameters;
		}

		@Override
		public String name() {
		return new ComponentName(mContext, this.getClass()).flattenToShortString();
		@@ -142,6 +149,17 @@ public class LocalTransport extends BackupTransport {
		return TRANSPORT_DIR_NAME;
		}

		@Override
		public int getTransportFlags() {
		int flags = super.getTransportFlags();
		// Testing for a fake flag and having it set as a boolean in settings prevents anyone from
		// using this it to pull data from the agent
		if (mParameters.isFakeEncryptionFlag()) {
		flags \|= BackupAgent.FLAG_FAKE_CLIENT_SIDE_ENCRYPTION_ENABLED;
		}
		return flags;
		}

		@Override
		public long requestBackupTime() {
		// any time is a good time for local backup

core/java/com/android/internal/backup/LocalTransportParameters.java

0 → 100644

+77 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2018 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.internal.backup;

		import android.content.ContentResolver;
		import android.database.ContentObserver;
		import android.os.Handler;
		import android.provider.Settings;
		import android.util.KeyValueListParser;
		import android.util.Slog;

		class LocalTransportParameters {
		private static final String TAG = "LocalTransportParams";
		private static final String SETTING = Settings.Secure.BACKUP_LOCAL_TRANSPORT_PARAMETERS;
		private static final String KEY_FAKE_ENCRYPTION_FLAG = "fake_encryption_flag";

		private final KeyValueListParser mParser = new KeyValueListParser(',');
		private final ContentObserver mObserver;
		private final ContentResolver mResolver;
		private boolean mFakeEncryptionFlag;

		LocalTransportParameters(Handler handler, ContentResolver resolver) {
		mObserver = new Observer(handler);
		mResolver = resolver;
		}

		/** Observes for changes in the setting. This method MUST be paired with {@link #stop()}. */
		void start() {
		mResolver.registerContentObserver(Settings.Secure.getUriFor(SETTING), false, mObserver);
		update();
		}

		/** Stop observing for changes in the setting. */
		void stop() {
		mResolver.unregisterContentObserver(mObserver);
		}

		boolean isFakeEncryptionFlag() {
		return mFakeEncryptionFlag;
		}

		private void update() {
		String parameters = "";
		try {
		parameters = Settings.Secure.getString(mResolver, SETTING);
		} catch (IllegalArgumentException e) {
		Slog.e(TAG, "Malformed " + SETTING + " setting: " + e.getMessage());
		}
		mParser.setString(parameters);
		mFakeEncryptionFlag = mParser.getBoolean(KEY_FAKE_ENCRYPTION_FLAG, false);
		}

		private class Observer extends ContentObserver {
		private Observer(Handler handler) {
		super(handler);
		}

		@Override
		public void onChange(boolean selfChange) {
		update();
		}
		}
		}

core/java/com/android/internal/backup/LocalTransportService.java

+9 −1

Original line number	Diff line number	Diff line
		@@ -26,8 +26,16 @@ public class LocalTransportService extends Service {
		@Override
		public void onCreate() {
		if (sTransport == null) {
		sTransport = new LocalTransport(this);
		LocalTransportParameters parameters =
		new LocalTransportParameters(getMainThreadHandler(), getContentResolver());
		sTransport = new LocalTransport(this, parameters);
		}
		sTransport.getParameters().start();
		}

		@Override
		public void onDestroy() {
		sTransport.getParameters().stop();
		}

		@Override