Use magic wake lock tag for Huawei devices.

Removed unused ReferenceManager

See merge request briar/briar!856

.gitlab-ci.yml

@@ -21,11 +21,7 @@ test:
 
 
 test_reproducible:
-  image: briar/reproducer:latest
-
   script:
-    - cd /opt/briar-reproducer
-    - ./reproduce.py ${CI_COMMIT_REF_NAME}
-
+    - "curl -X POST -F token=${RELEASE_CHECK_TOKEN} -F ref=master -F variables[RELEASE_TAG]=${CI_COMMIT_REF_NAME} https://code.briarproject.org/api/v4/projects/61/trigger/pipeline"
   only:
     - tags

bramble-android/build.gradle

@@ -11,6 +11,8 @@ android {
 		versionCode 10011
 		versionName "1.0.11"
 		consumerProguardFiles 'proguard-rules.txt'
+
+		testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
 	}
 
 	compileOptions {
@@ -31,6 +33,12 @@ dependencies {
 	annotationProcessor 'com.google.dagger:dagger-compiler:2.0.2'
 
 	compileOnly 'javax.annotation:jsr250-api:1.0'
+
+	androidTestImplementation project(path: ':bramble-api', configuration: 'testOutput')
+	androidTestImplementation project(path: ':bramble-core', configuration: 'testOutput')
+	androidTestImplementation 'com.android.support.test:runner:1.0.2'
+	androidTestAnnotationProcessor 'com.google.dagger:dagger-compiler:2.0.2'
+	androidTestCompileOnly 'javax.annotation:jsr250-api:1.0'
 }
 
 dependencyVerification {

bramble-android/src/androidTest/java/org/briarproject/bramble/IntegrationTestComponent.java

@@ -0,0 +1,23 @@
+package org.briarproject.bramble;
+
+import org.briarproject.bramble.event.EventModule;
+import org.briarproject.bramble.plugin.PluginModule;
+import org.briarproject.bramble.plugin.tor.BridgeTest;
+import org.briarproject.bramble.system.SystemModule;
+
+import javax.inject.Singleton;
+
+import dagger.Component;
+
+@Singleton
+@Component(modules = {
+		BrambleAndroidModule.class,
+		PluginModule.class,  // needed for BackoffFactory
+		EventModule.class,
+		SystemModule.class,
+})
+public interface IntegrationTestComponent {
+
+	void inject(BridgeTest init);
+
+}

bramble-android/src/androidTest/java/org/briarproject/bramble/plugin/tor/BridgeTest.java

@@ -0,0 +1,126 @@
+package org.briarproject.bramble.plugin.tor;
+
+import android.content.Context;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.briarproject.bramble.DaggerIntegrationTestComponent;
+import org.briarproject.bramble.IntegrationTestComponent;
+import org.briarproject.bramble.api.event.EventBus;
+import org.briarproject.bramble.api.plugin.BackoffFactory;
+import org.briarproject.bramble.api.plugin.duplex.DuplexPlugin;
+import org.briarproject.bramble.api.system.Clock;
+import org.briarproject.bramble.api.system.LocationUtils;
+import org.briarproject.bramble.test.BrambleTestCase;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.List;
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledThreadPoolExecutor;
+import java.util.logging.Logger;
+
+import javax.inject.Inject;
+import javax.net.SocketFactory;
+
+import static android.support.test.InstrumentationRegistry.getTargetContext;
+import static java.util.Collections.singletonList;
+import static java.util.concurrent.TimeUnit.SECONDS;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+
+@RunWith(AndroidJUnit4.class)
+public class BridgeTest extends BrambleTestCase {
+
+	private final static long TIMEOUT = SECONDS.toMillis(23);
+
+	private final static Logger LOG =
+			Logger.getLogger(BridgeTest.class.getSimpleName());
+
+	@Inject
+	EventBus eventBus;
+	@Inject
+	BackoffFactory backoffFactory;
+	@Inject
+	Clock clock;
+
+	private final Context appContext = getTargetContext();
+	private final CircumventionProvider circumventionProvider;
+	private final List<String> bridges;
+	private TorPluginFactory factory;
+	private volatile int currentBridge = 0;
+
+	public BridgeTest() {
+		super();
+		circumventionProvider = new CircumventionProvider() {
+			@Override
+			public boolean isTorProbablyBlocked(String countryCode) {
+				return true;
+			}
+
+			@Override
+			public boolean doBridgesWork(String countryCode) {
+				return true;
+			}
+
+			@Override
+			public List<String> getBridges() {
+				return singletonList(bridges.get(currentBridge));
+			}
+		};
+		bridges = new CircumventionProviderImpl(appContext).getBridges();
+	}
+
+	@Before
+	public void setUp() {
+		IntegrationTestComponent component =
+				DaggerIntegrationTestComponent.builder().build();
+		component.inject(this);
+
+		Executor ioExecutor = Executors.newCachedThreadPool();
+		ScheduledExecutorService scheduler = new ScheduledThreadPoolExecutor(1);
+		LocationUtils locationUtils = () -> "US";
+		SocketFactory torSocketFactory = SocketFactory.getDefault();
+
+		factory = new TorPluginFactory(ioExecutor, scheduler, appContext,
+				locationUtils, eventBus, torSocketFactory,
+				backoffFactory, circumventionProvider, clock);
+	}
+
+	@Test
+	public void testBridges() throws Exception {
+		assertTrue(bridges.size() > 0);
+
+		for (int i = 0; i < bridges.size(); i++) {
+			testBridge(i);
+		}
+	}
+
+	private void testBridge(int bridge) throws Exception {
+		DuplexPlugin duplexPlugin =
+				factory.createPlugin(new TorPluginCallBack());
+		assertNotNull(duplexPlugin);
+		TorPlugin plugin = (TorPlugin) duplexPlugin;
+
+		currentBridge = bridge;
+		LOG.warning("Testing " + bridges.get(currentBridge));
+		try {
+			plugin.start();
+			long start = clock.currentTimeMillis();
+			while (clock.currentTimeMillis() - start < TIMEOUT) {
+				if (plugin.isRunning()) return;
+				clock.sleep(500);
+			}
+			if (!plugin.isRunning()) {
+				fail("Could not connect to Tor within timeout.");
+			}
+		} finally {
+			plugin.stop();
+		}
+	}
+
+}

bramble-android/src/androidTest/java/org/briarproject/bramble/plugin/tor/TorPluginCallBack.java

@@ -0,0 +1,54 @@
+package org.briarproject.bramble.plugin.tor;
+
+import org.briarproject.bramble.api.contact.ContactId;
+import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.bramble.api.plugin.duplex.DuplexPluginCallback;
+import org.briarproject.bramble.api.plugin.duplex.DuplexTransportConnection;
+import org.briarproject.bramble.api.properties.TransportProperties;
+import org.briarproject.bramble.api.settings.Settings;
+
+@NotNullByDefault
+public class TorPluginCallBack implements DuplexPluginCallback {
+
+	@Override
+	public void incomingConnectionCreated(DuplexTransportConnection d) {
+
+	}
+
+	@Override
+	public void outgoingConnectionCreated(ContactId c,
+			DuplexTransportConnection d) {
+
+	}
+
+	@Override
+	public Settings getSettings() {
+		return new Settings();
+	}
+
+	@Override
+	public TransportProperties getLocalProperties() {
+		return new TransportProperties();
+	}
+
+	@Override
+	public void mergeSettings(Settings s) {
+
+	}
+
+	@Override
+	public void mergeLocalProperties(TransportProperties p) {
+
+	}
+
+	@Override
+	public void transportEnabled() {
+
+	}
+
+	@Override
+	public void transportDisabled() {
+
+	}
+
+}

bramble-android/src/main/java/org/briarproject/bramble/BrambleAndroidModule.java

@@ -1,11 +1,25 @@
 package org.briarproject.bramble;
 
+import android.app.Application;
+
+import org.briarproject.bramble.plugin.tor.CircumventionProvider;
+import org.briarproject.bramble.plugin.tor.CircumventionProviderImpl;
 import org.briarproject.bramble.system.AndroidSystemModule;
 
+import javax.inject.Singleton;
+
 import dagger.Module;
+import dagger.Provides;
 
 @Module(includes = {
 		AndroidSystemModule.class
 })
 public class BrambleAndroidModule {
+
+	@Provides
+	@Singleton
+	CircumventionProvider provideCircumventionProvider(Application app) {
+		return new CircumventionProviderImpl(app.getApplicationContext());
+	}
+
 }

bramble-android/src/main/java/org/briarproject/bramble/PowerTestingConstants.java

@@ -0,0 +1,8 @@
+package org.briarproject.bramble;
+
+public interface PowerTestingConstants {
+
+	int WAKE_LOCK_DURATION = 5000;
+	int ALARM_DELAY = 5000;
+	boolean USE_TOR_WAKE_LOCK = true;
+}

bramble-android/src/main/java/org/briarproject/bramble/plugin/tor/CircumventionProvider.java

@@ -0,0 +1,30 @@
+package org.briarproject.bramble.plugin.tor;
+
+import org.briarproject.bramble.api.lifecycle.IoExecutor;
+
+import java.util.List;
+
+public interface CircumventionProvider {
+
+	/**
+	 * Countries where Tor is blocked, i.e. vanilla Tor connection won't work.
+	 *
+	 * See https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2
+	 * and https://trac.torproject.org/projects/tor/wiki/doc/OONI/censorshipwiki
+	 */
+	String[] BLOCKED = {"CN", "IR", "EG", "BY", "TR", "SY", "VE"};
+
+	/**
+	 * Countries where vanilla bridge connection are likely to work.
+	 * Should be a subset of {@link #BLOCKED}.
+	 */
+	String[] BRIDGES = { "EG", "BY", "TR", "SY", "VE" };
+
+	boolean isTorProbablyBlocked(String countryCode);
+
+	boolean doBridgesWork(String countryCode);
+
+	@IoExecutor
+	List<String> getBridges();
+
+}

bramble-android/src/main/java/org/briarproject/bramble/plugin/tor/CircumventionProviderImpl.java

@@ -0,0 +1,68 @@
+package org.briarproject.bramble.plugin.tor;
+
+import android.content.Context;
+import android.content.res.Resources;
+
+import org.briarproject.bramble.api.lifecycle.IoExecutor;
+
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Scanner;
+import java.util.Set;
+
+import javax.annotation.Nullable;
+import javax.inject.Inject;
+
+public class CircumventionProviderImpl implements CircumventionProvider {
+
+	private final static String BRIDGE_FILE_NAME = "bridges";
+
+	private final Context ctx;
+	@Nullable
+	private volatile List<String> bridges = null;
+
+	@Inject
+	public CircumventionProviderImpl(Context ctx) {
+		this.ctx = ctx;
+	}
+
+	private static final Set<String> BLOCKED_IN_COUNTRIES =
+			new HashSet<>(Arrays.asList(BLOCKED));
+	private static final Set<String> BRIDGES_WORK_IN_COUNTRIES =
+			new HashSet<>(Arrays.asList(BRIDGES));
+
+	@Override
+	public boolean isTorProbablyBlocked(String countryCode) {
+		return BLOCKED_IN_COUNTRIES.contains(countryCode);
+	}
+
+	@Override
+	public boolean doBridgesWork(String countryCode) {
+		return BRIDGES_WORK_IN_COUNTRIES.contains(countryCode);
+	}
+
+	@Override
+	@IoExecutor
+	public List<String> getBridges() {
+		if (this.bridges != null) return this.bridges;
+
+		Resources res = ctx.getResources();
+		int resId = res.getIdentifier(BRIDGE_FILE_NAME, "raw",
+				ctx.getPackageName());
+		InputStream is = ctx.getResources().openRawResource(resId);
+		Scanner scanner = new Scanner(is);
+
+		List<String> bridges = new ArrayList<>();
+		while (scanner.hasNextLine()) {
+			String line = scanner.nextLine();
+			if (!line.startsWith("#")) bridges.add(line);
+		}
+		scanner.close();
+		this.bridges = bridges;
+		return bridges;
+	}
+
+}

bramble-android/src/main/java/org/briarproject/bramble/plugin/tor/TorNetworkMetadata.java

@@ -1,18 +0,0 @@
-package org.briarproject.bramble.plugin.tor;
-
-import java.util.Arrays;
-import java.util.HashSet;
-import java.util.Set;
-
-class TorNetworkMetadata {
-
-	// See https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2
-	// and https://trac.torproject.org/projects/tor/wiki/doc/OONI/censorshipwiki
-	// TODO: get a more complete list
-	private static final Set<String> BLOCKED_IN_COUNTRIES =
-			new HashSet<>(Arrays.asList("CN", "IR", "SY", "ZZ"));
-
-	static boolean isTorProbablyBlocked(String countryCode) {
-		return BLOCKED_IN_COUNTRIES.contains(countryCode);
-	}
-}

bramble-android/src/main/java/org/briarproject/bramble/plugin/tor/TorPlugin.java

@@ -50,7 +50,9 @@ import java.io.OutputStream;
 import java.net.InetSocketAddress;
 import java.net.ServerSocket;
 import java.net.Socket;
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
@@ -83,6 +85,7 @@ import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
 import static net.freehaven.tor.control.TorControlCommands.HS_ADDRESS;
 import static net.freehaven.tor.control.TorControlCommands.HS_PRIVKEY;
+import static org.briarproject.bramble.PowerTestingConstants.USE_TOR_WAKE_LOCK;
 import static org.briarproject.bramble.api.plugin.TorConstants.CONTROL_PORT;
 import static org.briarproject.bramble.api.plugin.TorConstants.ID;
 import static org.briarproject.bramble.api.plugin.TorConstants.PREF_TOR_NETWORK;
@@ -119,6 +122,7 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 	private final Backoff backoff;
 	private final DuplexPluginCallback callback;
 	private final String architecture;
+	private final CircumventionProvider circumventionProvider;
 	private final int maxLatency, maxIdleTime, socketTimeout;
 	private final ConnectionStatus connectionStatus;
 	private final File torDirectory, torFile, geoIpFile, configFile;
@@ -138,7 +142,7 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 			Context appContext, LocationUtils locationUtils,
 			SocketFactory torSocketFactory, Clock clock, Backoff backoff,
 			DuplexPluginCallback callback, String architecture,
-			int maxLatency, int maxIdleTime) {
+			CircumventionProvider circumventionProvider, int maxLatency, int maxIdleTime) {
 		this.ioExecutor = ioExecutor;
 		this.scheduler = scheduler;
 		this.appContext = appContext;
@@ -148,6 +152,7 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 		this.backoff = backoff;
 		this.callback = callback;
 		this.architecture = architecture;
+		this.circumventionProvider = circumventionProvider;
 		this.maxLatency = maxLatency;
 		this.maxIdleTime = maxIdleTime;
 		if (maxIdleTime > Integer.MAX_VALUE / 2)
@@ -489,12 +494,23 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 
 	private void enableNetwork(boolean enable) throws IOException {
 		if (!running) return;
-		if (enable) wakeLock.acquire();
+		if (enable && USE_TOR_WAKE_LOCK) wakeLock.acquire();
 		connectionStatus.enableNetwork(enable);
 		controlConnection.setConf("DisableNetwork", enable ? "0" : "1");
 		if (!enable) {
 			callback.transportDisabled();
-			wakeLock.release();
+			if (USE_TOR_WAKE_LOCK) wakeLock.release();
+		}
+	}
+
+	private void enableBridges(boolean enable) throws IOException {
+		if (enable) {
+			Collection<String> conf = new ArrayList<>();
+			conf.add("UseBridges 1");
+			conf.addAll(circumventionProvider.getBridges());
+			controlConnection.setConf(conf);
+		} else {
+			controlConnection.setConf("UseBridges", "0");
 		}
 	}
 
@@ -514,7 +530,7 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 				logException(LOG, WARNING, e);
 			}
 		}
-		wakeLock.release();
+		if (USE_TOR_WAKE_LOCK) wakeLock.release();
 	}
 
 	@Override
@@ -662,8 +678,8 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 			boolean online = net != null && net.isConnected();
 			boolean wifi = online && net.getType() == TYPE_WIFI;
 			String country = locationUtils.getCurrentCountry();
-			boolean blocked = TorNetworkMetadata.isTorProbablyBlocked(
-					country);
+			boolean blocked =
+					circumventionProvider.isTorProbablyBlocked(country);
 			Settings s = callback.getSettings();
 			int network = s.getInt(PREF_TOR_NETWORK, PREF_TOR_NETWORK_ALWAYS);
 
@@ -677,15 +693,22 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 				if (!online) {
 					LOG.info("Disabling network, device is offline");
 					enableNetwork(false);
-				} else if (blocked) {
-					LOG.info("Disabling network, country is blocked");
-					enableNetwork(false);
 				} else if (network == PREF_TOR_NETWORK_NEVER
 						|| (network == PREF_TOR_NETWORK_WIFI && !wifi)) {
 					LOG.info("Disabling network due to data setting");
 					enableNetwork(false);
+				} else if (blocked) {
+					if (circumventionProvider.doBridgesWork(country)) {
+						LOG.info("Enabling network, using bridges");
+						enableBridges(true);
+						enableNetwork(true);
+					} else {
+						LOG.info("Disabling network, country is blocked");
+						enableNetwork(false);
+					}
 				} else {
 					LOG.info("Enabling network");
+					enableBridges(false);
 					enableNetwork(true);
 				}
 			} catch (IOException e) {

bramble-android/src/main/java/org/briarproject/bramble/plugin/tor/TorPluginFactory.java

@@ -43,12 +43,14 @@ public class TorPluginFactory implements DuplexPluginFactory {
 	private final EventBus eventBus;
 	private final SocketFactory torSocketFactory;
 	private final BackoffFactory backoffFactory;
+	private final CircumventionProvider circumventionProvider;
 	private final Clock clock;
 
 	public TorPluginFactory(Executor ioExecutor,
 			ScheduledExecutorService scheduler, Context appContext,
 			LocationUtils locationUtils, EventBus eventBus,
 			SocketFactory torSocketFactory, BackoffFactory backoffFactory,
+			CircumventionProvider circumventionProvider,
 			Clock clock) {
 		this.ioExecutor = ioExecutor;
 		this.scheduler = scheduler;
@@ -57,6 +59,7 @@ public class TorPluginFactory implements DuplexPluginFactory {
 		this.eventBus = eventBus;
 		this.torSocketFactory = torSocketFactory;
 		this.backoffFactory = backoffFactory;
+		this.circumventionProvider = circumventionProvider;
 		this.clock = clock;
 	}
 
@@ -95,7 +98,7 @@ public class TorPluginFactory implements DuplexPluginFactory {
 				MAX_POLLING_INTERVAL, BACKOFF_BASE);
 		TorPlugin plugin = new TorPlugin(ioExecutor, scheduler, appContext,
 				locationUtils, torSocketFactory, clock, backoff, callback,
-				architecture, MAX_LATENCY, MAX_IDLE_TIME);
+				architecture, circumventionProvider, MAX_LATENCY, MAX_IDLE_TIME);
 		eventBus.addListener(plugin);
 		return plugin;
 	}

bramble-android/src/main/res/raw/bridges

@@ -0,0 +1,5 @@
+Bridge 131.252.210.150:8081 0E858AC201BF0F3FA3C462F64844CBFFC7297A42
+Bridge 67.205.189.122:8443 12D64D5D44E20169585E7378580C0D33A872AD98
+Bridge 45.32.148.146:8443 0CE016FB2462D8BF179AE71F7D702D09DEAC3F1D
+Bridge 148.251.90.59:7510 019F727CA6DCA6CA5C90B55E477B7D87981E75BC
+#Bridge 128.105.214.161:8081 1E326AAFB3FCB515015250D8FCCC8E37F91A153B

bramble-api/src/main/java/org/briarproject/bramble/api/lifecycle/IoExecutor.java

@@ -12,7 +12,7 @@ import static java.lang.annotation.RetentionPolicy.RUNTIME;
 
 /**
  * Annotation for injecting the executor for long-running IO tasks. Also used
- * for annotating methods that should run on the UI executor.
+ * for annotating methods that should run on the IO executor.
  * <p>
  * The contract of this executor is that tasks may be run concurrently, and
  * submitting a task will never block. Tasks may run indefinitely. Tasks

briar-android/build.gradle

@@ -261,7 +261,7 @@ android {
 			proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
 		}
 		release {
-			shrinkResources true
+			shrinkResources false
 			minifyEnabled true
 			crunchPngs false
 			proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'

briar-android/src/main/java/org/briarproject/briar/android/AppModule.java

@@ -25,12 +25,12 @@ import org.briarproject.bramble.api.system.LocationUtils;
 import org.briarproject.bramble.api.system.Scheduler;
 import org.briarproject.bramble.plugin.bluetooth.AndroidBluetoothPluginFactory;
 import org.briarproject.bramble.plugin.tcp.AndroidLanTcpPluginFactory;
+import org.briarproject.bramble.plugin.tor.CircumventionProvider;
 import org.briarproject.bramble.plugin.tor.TorPluginFactory;
 import org.briarproject.bramble.util.AndroidUtils;
 import org.briarproject.bramble.util.StringUtils;
 import org.briarproject.briar.api.android.AndroidNotificationManager;
 import org.briarproject.briar.api.android.DozeWatchdog;
-import org.briarproject.briar.api.android.ReferenceManager;
 import org.briarproject.briar.api.android.ScreenFilterMonitor;
 
 import java.io.File;
@@ -99,14 +99,14 @@ public class AppModule {
 			AndroidExecutor androidExecutor, SecureRandom random,
 			SocketFactory torSocketFactory, BackoffFactory backoffFactory,
 			Application app, LocationUtils locationUtils, EventBus eventBus,
-			Clock clock) {
+			CircumventionProvider circumventionProvider, Clock clock) {
 		Context appContext = app.getApplicationContext();
 		DuplexPluginFactory bluetooth =
 				new AndroidBluetoothPluginFactory(ioExecutor, androidExecutor,
 						appContext, random, eventBus, backoffFactory);
 		DuplexPluginFactory tor = new TorPluginFactory(ioExecutor, scheduler,
 				appContext, locationUtils, eventBus, torSocketFactory,
-				backoffFactory, clock);
+				backoffFactory, circumventionProvider, clock);
 		DuplexPluginFactory lan = new AndroidLanTcpPluginFactory(ioExecutor,
 				scheduler, backoffFactory, appContext);
 		Collection<DuplexPluginFactory> duplex = asList(bluetooth, tor, lan);
@@ -165,12 +165,6 @@ public class AppModule {
 		return app.getSharedPreferences("db", MODE_PRIVATE);
 	}
 
-	@Provides
-	@Singleton
-	ReferenceManager provideReferenceManager() {
-		return new ReferenceManagerImpl();
-	}
-
 	@Provides
 	@Singleton
 	AndroidNotificationManager provideAndroidNotificationManager(

briar-android/src/main/java/org/briarproject/briar/android/BriarApplicationImpl.java

@@ -117,6 +117,7 @@ public class BriarApplicationImpl extends Application
 		BrambleCoreModule.initEagerSingletons(applicationComponent);
 		BriarCoreModule.initEagerSingletons(applicationComponent);
 		AndroidEagerSingletons.initEagerSingletons(applicationComponent);
+		new SleepMonitor().start();
 	}
 
 	@Override

briar-android/src/main/java/org/briarproject/briar/android/BriarBroadcastReceiver.java

@@ -0,0 +1,84 @@
+package org.briarproject.briar.android;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+import android.os.PowerManager;
+import android.support.v4.content.WakefulBroadcastReceiver;
+import android.util.Log;
+
+import static android.content.Context.CONNECTIVITY_SERVICE;
+import static android.content.Context.POWER_SERVICE;
+import static android.content.Intent.ACTION_AIRPLANE_MODE_CHANGED;
+import static android.content.Intent.ACTION_BATTERY_CHANGED;
+import static android.content.Intent.ACTION_POWER_CONNECTED;
+import static android.content.Intent.ACTION_POWER_DISCONNECTED;
+import static android.content.Intent.ACTION_SCREEN_OFF;
+import static android.content.Intent.ACTION_SCREEN_ON;
+import static android.net.ConnectivityManager.CONNECTIVITY_ACTION;
+import static android.net.ConnectivityManager.TYPE_WIFI;
+import static android.os.BatteryManager.EXTRA_LEVEL;
+import static android.os.BatteryManager.EXTRA_PLUGGED;
+import static android.os.BatteryManager.EXTRA_SCALE;
+import static android.os.Build.VERSION.SDK_INT;
+import static android.os.PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED;
+import static android.os.PowerManager.ACTION_POWER_SAVE_MODE_CHANGED;
+
+public class BriarBroadcastReceiver extends WakefulBroadcastReceiver {
+
+	IntentFilter getIntentFilter() {
+		IntentFilter filter = new IntentFilter();
+		filter.addAction(ACTION_SCREEN_ON);
+		filter.addAction(ACTION_SCREEN_OFF);
+		filter.addAction(ACTION_BATTERY_CHANGED);
+		filter.addAction(ACTION_POWER_CONNECTED);
+		filter.addAction(ACTION_POWER_DISCONNECTED);
+		if (SDK_INT >= 21) filter.addAction(ACTION_POWER_SAVE_MODE_CHANGED);
+		if (SDK_INT >= 23) filter.addAction(ACTION_DEVICE_IDLE_MODE_CHANGED);
+		filter.addAction(ACTION_AIRPLANE_MODE_CHANGED);
+		filter.addAction(CONNECTIVITY_ACTION);
+		return filter;
+	}
+
+	@Override
+	public void onReceive(Context ctx, Intent i) {
+		String action = i.getAction();
+		if (ACTION_SCREEN_ON.equals(action)) {
+			Log.i("DEVICE_STATUS", "Screen on");
+		} else if (ACTION_SCREEN_OFF.equals(action)) {
+			Log.i("DEVICE_STATUS", "Screen off");
+		} else if (ACTION_BATTERY_CHANGED.equals(action)) {
+			int level = i.getIntExtra(EXTRA_LEVEL, -1);
+			int scale = i.getIntExtra(EXTRA_SCALE, -1);
+			int plugged = i.getIntExtra(EXTRA_PLUGGED, -1);
+			Log.i("DEVICE_STATUS", "Battery level: " + (level / (float) scale)
+					+ ", plugged: " + (plugged != 0));
+		} else if (ACTION_POWER_CONNECTED.equals(action)) {
+			Log.i("DEVICE_STATUS", "Power connected");
+		} else if (ACTION_POWER_DISCONNECTED.equals(action)) {
+			Log.i("DEVICE_STATUS", "Power disconnected");
+		} else if (SDK_INT >= 21
+				&& ACTION_POWER_SAVE_MODE_CHANGED.equals(action)) {
+			PowerManager pm = (PowerManager)
+					ctx.getSystemService(POWER_SERVICE);
+			Log.i("DEVICE_STATUS", "Power save mode: " + pm.isPowerSaveMode());
+		} else if (SDK_INT >= 23
+				&& ACTION_DEVICE_IDLE_MODE_CHANGED.equals(action)) {
+			PowerManager pm = (PowerManager)
+					ctx.getSystemService(POWER_SERVICE);
+			Log.i("DEVICE_STATUS", " Idle mode: " + pm.isDeviceIdleMode());
+		} else if (ACTION_AIRPLANE_MODE_CHANGED.equals(action)) {
+			Log.i("DEVICE_STATUS",
+					"Airplane mode: " + i.getBooleanExtra("state", false));
+		} else if (CONNECTIVITY_ACTION.equals(action)) {
+			ConnectivityManager cm = (ConnectivityManager)
+					ctx.getSystemService(CONNECTIVITY_SERVICE);
+			NetworkInfo net = cm.getActiveNetworkInfo();
+			boolean online = net != null && net.isConnected();
+			boolean wifi = net != null && net.getType() == TYPE_WIFI;
+			Log.i("DEVICE_STATUS", "Online: " + online + ", wifi: " + wifi);
+		}
+	}
+}

briar-android/src/main/java/org/briarproject/briar/android/BriarService.java

@@ -2,6 +2,7 @@ package org.briarproject.briar.android;
 
 import android.app.ActivityManager;
 import android.app.ActivityManager.RunningAppProcessInfo;
+import android.app.AlarmManager;
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
@@ -13,9 +14,14 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.ServiceConnection;
 import android.os.Binder;
+import android.os.Handler;
 import android.os.IBinder;
+import android.os.PowerManager;
+import android.os.PowerManager.WakeLock;
+import android.os.SystemClock;
 import android.support.v4.app.NotificationCompat;
 import android.support.v4.content.ContextCompat;
+import android.util.Log;
 
 import org.briarproject.bramble.api.db.DatabaseConfig;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
@@ -33,8 +39,10 @@ import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static android.app.ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND;
+import static android.app.AlarmManager.ELAPSED_REALTIME_WAKEUP;
 import static android.app.NotificationManager.IMPORTANCE_DEFAULT;
 import static android.app.NotificationManager.IMPORTANCE_NONE;
+import static android.app.PendingIntent.FLAG_CANCEL_CURRENT;
 import static android.app.PendingIntent.FLAG_UPDATE_CURRENT;
 import static android.content.Intent.ACTION_SHUTDOWN;
 import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TASK;
@@ -43,11 +51,15 @@ import static android.content.Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS;
 import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
 import static android.content.Intent.FLAG_ACTIVITY_NO_ANIMATION;
 import static android.os.Build.VERSION.SDK_INT;
+import static android.os.PowerManager.PARTIAL_WAKE_LOCK;
 import static android.support.v4.app.NotificationCompat.CATEGORY_SERVICE;
 import static android.support.v4.app.NotificationCompat.PRIORITY_MIN;
 import static android.support.v4.app.NotificationCompat.VISIBILITY_SECRET;
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.PowerTestingConstants.ALARM_DELAY;
+import static org.briarproject.bramble.PowerTestingConstants.USE_TOR_WAKE_LOCK;
+import static org.briarproject.bramble.PowerTestingConstants.WAKE_LOCK_DURATION;
 import static org.briarproject.bramble.api.lifecycle.LifecycleManager.StartResult.ALREADY_RUNNING;
 import static org.briarproject.bramble.api.lifecycle.LifecycleManager.StartResult.SUCCESS;
 import static org.briarproject.briar.api.android.AndroidNotificationManager.FAILURE_CHANNEL_ID;
@@ -65,15 +77,27 @@ public class BriarService extends Service {
 	public static String EXTRA_STARTUP_FAILED =
 			"org.briarproject.briar.STARTUP_FAILED";
 
+	// This tag prevents the wake lock from being ignored on some Huawei devices
+	private static final String WAKE_LOCK_TAG = "LocationManagerService";
+	private static final String ACTION_ALARM =
+			"org.briarproject.briar.android.ACTION_ALARM";
+	private static final String EXTRA_DUE_MILLIS =
+			"org.briarproject.briar.android.DUE_MILLIS";
+
 	private static final Logger LOG =
 			Logger.getLogger(BriarService.class.getName());
 
 	private final AtomicBoolean created = new AtomicBoolean(false);
 	private final Binder binder = new BriarBinder();
 
+	private AlarmManager alarm;
+
 	@Nullable
 	private BroadcastReceiver receiver = null;
 
+	@Nullable
+	private BriarBroadcastReceiver testReceiver = null;
+
 	@Inject
 	protected DatabaseConfig databaseConfig;
 	// Fields that are accessed from background threads must be volatile
@@ -90,6 +114,11 @@ public class BriarService extends Service {
 		BriarApplication application = (BriarApplication) getApplication();
 		application.getApplicationComponent().inject(this);
 
+		alarm = (AlarmManager)
+				getApplicationContext().getSystemService(ALARM_SERVICE);
+
+		setAlarm();
+
 		LOG.info("Created");
 		if (created.getAndSet(true)) {
 			LOG.info("Already created");
@@ -168,6 +197,34 @@ public class BriarService extends Service {
 		filter.addAction("android.intent.action.QUICKBOOT_POWEROFF");
 		filter.addAction("com.htc.intent.action.QUICKBOOT_POWEROFF");
 		registerReceiver(receiver, filter);
+		testReceiver = new BriarBroadcastReceiver();
+		registerReceiver(testReceiver, testReceiver.getIntentFilter());
+	}
+
+	private void setAlarm() {
+		long dueMillis = SystemClock.elapsedRealtime() + ALARM_DELAY;
+		PendingIntent pi = getPendingIntent(dueMillis);
+		if (SDK_INT >= 23) {
+			alarm.setExactAndAllowWhileIdle(ELAPSED_REALTIME_WAKEUP,
+					dueMillis, pi);
+		} else if (SDK_INT >= 19) {
+			alarm.setExact(ELAPSED_REALTIME_WAKEUP, dueMillis, pi);
+		} else {
+			alarm.set(ELAPSED_REALTIME_WAKEUP, dueMillis, pi);
+		}
+		Log.i("ALARM_TEST", "Alarm set for " + ALARM_DELAY + " ms");
+	}
+
+	PendingIntent getPendingIntent(long dueMillis) {
+		return PendingIntent.getService(getApplicationContext(), 0,
+				getAlarmIntent(dueMillis), FLAG_CANCEL_CURRENT);
+	}
+
+	Intent getAlarmIntent(long dueMillis) {
+		Intent i = new Intent(getApplicationContext(), BriarService.class);
+		i.setAction(ACTION_ALARM);
+		i.putExtra(EXTRA_DUE_MILLIS, dueMillis);
+		return i;
 	}
 
 	@Override
@@ -204,6 +261,30 @@ public class BriarService extends Service {
 
 	@Override
 	public int onStartCommand(Intent intent, int flags, int startId) {
+		if (ACTION_ALARM.equals(intent.getAction())) {
+			long dueMillis = intent.getLongExtra(EXTRA_DUE_MILLIS, 0);
+			long late = SystemClock.elapsedRealtime() - dueMillis;
+			Log.i("ALARM_TEST", "Alarm fired " + late + " ms late");
+			PowerManager powerManager = (PowerManager)
+					getApplicationContext().getSystemService(POWER_SERVICE);
+			WakeLock wakeLock = powerManager.newWakeLock(PARTIAL_WAKE_LOCK,
+					WAKE_LOCK_TAG);
+			if (!USE_TOR_WAKE_LOCK) {
+				//acquire wakelock
+				wakeLock.acquire();
+				Log.i("ALARM_TEST", "WakeLock acquired for "
+						+ WAKE_LOCK_DURATION + " ms");
+			}
+			new Handler().postDelayed(() -> {
+				//set alarm before releasing wake lock
+				setAlarm();
+				if (!USE_TOR_WAKE_LOCK) {
+					//release wakelock
+					Log.i("ALARM_TEST", "Releasing WakeLock");
+					wakeLock.release();
+				}
+			}, WAKE_LOCK_DURATION);
+		}
 		return START_NOT_STICKY; // Don't restart automatically if killed
 	}
 
@@ -218,10 +299,12 @@ public class BriarService extends Service {
 		LOG.info("Destroyed");
 		stopForeground(true);
 		if (receiver != null) unregisterReceiver(receiver);
+		if (testReceiver != null) unregisterReceiver(testReceiver);
 		// Stop the services in a background thread
 		new Thread(() -> {
 			if (started) lifecycleManager.stopServices();
 		}).start();
+
 	}
 
 	@Override

briar-android/src/main/java/org/briarproject/briar/android/ReferenceManagerImpl.java

@@ -1,83 +0,0 @@
-package org.briarproject.briar.android;
-
-import org.briarproject.briar.api.android.ReferenceManager;
-
-import java.util.HashMap;
-import java.util.Map;
-import java.util.concurrent.locks.Lock;
-import java.util.concurrent.locks.ReentrantLock;
-import java.util.logging.Logger;
-
-import static java.util.logging.Level.INFO;
-
-class ReferenceManagerImpl implements ReferenceManager {
-
-	private static final Logger LOG =
-			Logger.getLogger(ReferenceManagerImpl.class.getName());
-
-	private final Lock lock = new ReentrantLock();
-
-	// The following are locking: lock
-	private final Map<Class<?>, Map<Long, Object>> outerMap = new HashMap<>();
-	private long nextHandle = 0;
-
-	@Override
-	public <T> T getReference(long handle, Class<T> c) {
-		lock.lock();
-		try {
-			Map<Long, Object> innerMap = outerMap.get(c);
-			if (innerMap == null) {
-				if (LOG.isLoggable(INFO))
-					LOG.info("0 handles for " + c.getName());
-				return null;
-			}
-			if (LOG.isLoggable(INFO))
-				LOG.info(innerMap.size() + " handles for " + c.getName());
-			Object o = innerMap.get(handle);
-			return c.cast(o);
-		} finally {
-			lock.unlock();
-		}
-
-	}
-
-	@Override
-	public <T> long putReference(T reference, Class<T> c) {
-		lock.lock();
-		try {
-			Map<Long, Object> innerMap = outerMap.get(c);
-			if (innerMap == null) {
-				innerMap = new HashMap<>();
-				outerMap.put(c, innerMap);
-			}
-			long handle = nextHandle++;
-			innerMap.put(handle, reference);
-			if (LOG.isLoggable(INFO)) {
-				LOG.info(innerMap.size() + " handles for " + c.getName() +
-						" after put");
-			}
-			return handle;
-		} finally {
-			lock.unlock();
-		}
-	}
-
-	@Override
-	public <T> T removeReference(long handle, Class<T> c) {
-		lock.lock();
-		try {
-			Map<Long, Object> innerMap = outerMap.get(c);
-			if (innerMap == null) return null;
-			Object o = innerMap.remove(handle);
-			if (innerMap.isEmpty()) outerMap.remove(c);
-			if (LOG.isLoggable(INFO)) {
-				LOG.info(innerMap.size() + " handles for " + c.getName() +
-						" after remove");
-			}
-			return c.cast(o);
-		} finally {
-			lock.unlock();
-		}
-
-	}
-}

briar-android/src/main/java/org/briarproject/briar/android/SleepMonitor.java

@@ -0,0 +1,77 @@
+package org.briarproject.briar.android;
+
+import android.os.SystemClock;
+import android.util.Log;
+
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+
+import static java.util.Locale.US;
+import static java.util.concurrent.TimeUnit.MILLISECONDS;
+
+public class SleepMonitor implements Runnable {
+
+	/**
+	 * How often to check the uptime and real time.
+	 */
+	private static final int INTERVAL_MS = 5000;
+
+	/**
+	 * If the difference between uptime and real time changes by more than
+	 * this amount, assume deep sleep has occurred.
+	 */
+	private static final int MIN_SLEEP_DURATION_MS = 1000;
+
+	private final ScheduledExecutorService executorService;
+
+	private volatile long uptime, realtime, diff;
+
+	SleepMonitor() {
+		uptime = SystemClock.uptimeMillis();
+		realtime = SystemClock.elapsedRealtime();
+		diff = realtime - uptime;
+		executorService = Executors.newSingleThreadScheduledExecutor();
+	}
+
+	void start() {
+		executorService.scheduleAtFixedRate(this, 0, INTERVAL_MS, MILLISECONDS);
+	}
+
+	@Override
+	public void run() {
+		long lastRealtime = realtime;
+		long sleepDuration = getSleepDuration();
+		if (sleepDuration > MIN_SLEEP_DURATION_MS) {
+			long elapsed = realtime - lastRealtime;
+			long now = System.currentTimeMillis();
+			String earliestStart = getTime(now - elapsed);
+			String earliestEnd = getTime(now - elapsed + sleepDuration);
+			String latestStart = getTime(now - sleepDuration);
+			String latestEnd = getTime(now);
+			Log.i("SLEEP_INFO", "System slept for " + sleepDuration
+					+ " ms since last check " + elapsed
+					+ " ms ago (earliest " + earliestStart + " - "
+					+ earliestEnd + ", latest " + latestStart + " - "
+					+ latestEnd + ")");
+		}
+	}
+
+	/**
+	 * Returns the amount of time spent in deep sleep since the last check.
+	 */
+	private long getSleepDuration() {
+		uptime = SystemClock.uptimeMillis();
+		realtime = SystemClock.elapsedRealtime();
+		long lastDiff = diff;
+		diff = realtime - uptime;
+		return diff - lastDiff;
+	}
+
+	private String getTime(long time) {
+		DateFormat sdf = new SimpleDateFormat("HH:mm:ss", US);
+		return sdf.format(new Date(time));
+	}
+}

briar-android/src/main/java/org/briarproject/briar/api/android/ReferenceManager.java

@@ -1,27 +0,0 @@
-package org.briarproject.briar.api.android;
-
-/**
- * Manages mappings between object references and serialisable handles. This
- * enables references to be passed between Android UI objects that belong to
- * the same process but can only communicate via serialisation.
- */
-public interface ReferenceManager {
-
-	/**
-	 * Returns the object with the given handle, or null if no mapping exists
-	 * for the handle.
-	 */
-	<T> T getReference(long handle, Class<T> c);
-
-	/**
-	 * Creates a mapping between the given reference and a handle, and returns
-	 * the handle.
-	 */
-	<T> long putReference(T reference, Class<T> c);
-
-	/**
-	 * Removes and returns the object with the given handle, or returns null
-	 * if no mapping exists for the handle.
-	 */
-	<T> T removeReference(long handle, Class<T> c);
-}

briar-android/src/main/res/layout/activity_rss_feed_import.xml

@@ -15,7 +15,9 @@
 		android:layout_weight="1"
 		android:gravity="top"
 		android:hint="@string/blogs_rss_feeds_import_hint"
-		android:inputType="textUri"/>
+		android:inputType="textUri"
+		android:paddingLeft="@dimen/margin_large"
+		android:paddingRight="@dimen/margin_large"/>
 
 	<Button
 		android:id="@+id/importButton"

briar-android/src/main/res/layout/power_view.xml

@@ -12,6 +12,8 @@
 		android:layout_width="0dp"
 		android:layout_height="wrap_content"
 		android:layout_marginTop="8dp"
+		android:paddingLeft="@dimen/margin_large"
+		android:paddingRight="@dimen/margin_large"
 		android:textSize="@dimen/text_size_medium"
 		app:layout_constraintEnd_toEndOf="parent"
 		app:layout_constraintStart_toStartOf="parent"