Create AccountManager to encapsulate authentication and account logic

This is done via another preference in the settings screen
and an action button attached to the notification itself

.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

@@ -8,9 +8,11 @@ android {
 	defaultConfig {
 		minSdkVersion 14
 		targetSdkVersion 26
-		versionCode 10008
-		versionName "1.0.8"
+		versionCode 10011
+		versionName "1.0.11"
 		consumerProguardFiles 'proguard-rules.txt'
+
+		testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
 	}
 
 	compileOptions {
@@ -31,36 +33,42 @@ 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 {
 	verify = [
-			'com.android.tools.analytics-library:protos:26.1.2:protos-26.1.2.jar:52672a0b42b572a06aecc3535d5068eb46c0e15d129b9f1085d3c16a1da5cdbb',
-			'com.android.tools.analytics-library:shared:26.1.2:shared-26.1.2.jar:5c7e0eda18c6f87feeb83628c707e8aaa3298b41fb72e38efe31ad1675f9e8e9',
-			'com.android.tools.analytics-library:tracker:26.1.2:tracker-26.1.2.jar:06f97aa0adf44ffb06f8681c6a79d9be153a08f61d21eddc42b8d3db96df4282',
-			'com.android.tools.build:apksig:3.1.2:apksig-3.1.2.jar:40696a4559124d1d57873d208857eee059d48859239d569c7d18374ac644a8be',
-			'com.android.tools.build:builder-model:3.1.2:builder-model-3.1.2.jar:d49bfa2a135c9562b6ca7aa4342036cfa1582c7074c2d1d93d1dae8b3a134e17',
-			'com.android.tools.build:builder-test-api:3.1.2:builder-test-api-3.1.2.jar:dfe2a50b740d41b11189101062434d4283d18647e89a492ad51710c719363e9f',
-			'com.android.tools.build:builder:3.1.2:builder-3.1.2.jar:b60f825a42e2efe8433619fbc759f3d9effecab718279048d36881188ceb1d14',
-			'com.android.tools.build:gradle-api:3.1.2:gradle-api-3.1.2.jar:e58bcc5b893e4583ab0f5c8ef89c4dbcce202b405a9d7fcc116d21e5357d4893',
-			'com.android.tools.build:manifest-merger:26.1.2:manifest-merger-26.1.2.jar:9c61c27ea5266573107b954acf1216d398f4d7e7ae6fad6409d6b2b767eb091c',
-			'com.android.tools.ddms:ddmlib:26.1.2:ddmlib-26.1.2.jar:18a2a5fbef36882f07d03c2b9e59eba05cf8248177bf5cbff736e4b582804c44',
-			'com.android.tools.external.com-intellij:intellij-core:26.1.2:intellij-core-26.1.2.jar:37c5acf279f1ae3e85b1a5be3c9f15f43bde7b08f978eefefffb9c4035760c52',
-			'com.android.tools.external.com-intellij:kotlin-compiler:26.1.2:kotlin-compiler-26.1.2.jar:152df0bee7580326c77316b669a9d96e3b09efb1d45f545dce4147271b0b8944',
-			'com.android.tools.external.org-jetbrains:uast:26.1.2:uast-26.1.2.jar:02d39582206d3f5fc0a6cb18bfd9e8b9f9c1acb805ec6dac08b4e3a56849d279',
-			'com.android.tools.layoutlib:layoutlib-api:26.1.2:layoutlib-api-26.1.2.jar:20220039fcc7d799f928153beff862e704457c0f55ab44258f3745ebeb662b4f',
-			'com.android.tools.lint:lint-api:26.1.2:lint-api-26.1.2.jar:e1d5b62b870a7c566e9877a6b96b27784a4d713f8caa07fdcb4705d47a40a1d9',
-			'com.android.tools.lint:lint-checks:26.1.2:lint-checks-26.1.2.jar:211e2afd58504372385d71b1e5be982c2b5121ab6fee1c04ddabeb75a8729e07',
-			'com.android.tools.lint:lint-gradle-api:26.1.2:lint-gradle-api-26.1.2.jar:71284f2a8b03c3e55c94511c9eb36f8184fbb85324325fc6b78abf5183f03d90',
-			'com.android.tools.lint:lint-gradle:26.1.2:lint-gradle-26.1.2.jar:855f0c82b7fc690df1b7319c0774f7517f7f8f5dd4eee1f6077dcf50e07c6240',
-			'com.android.tools.lint:lint-kotlin:26.1.2:lint-kotlin-26.1.2.jar:1e591f70bcbbc11569720a9bbcca2bc1f3d4f789f01f40f642848d920643d484',
-			'com.android.tools.lint:lint:26.1.2:lint-26.1.2.jar:93736c62e9f1976998c2b4aa716aea0734cdb162d05502f4af7292654aedb182',
-			'com.android.tools:annotations:26.1.2:annotations-26.1.2.jar:72773dcaf5c4ccca828e3c8467f1b78a8a00b3cc5f8ad1aab88fcf9379928018',
-			'com.android.tools:common:26.1.2:common-26.1.2.jar:ea4320f0c17dcbc4491896bb705c4d25ec08bd62ef02ab0579fe154e75e788e6',
-			'com.android.tools:dvlib:26.1.2:dvlib-26.1.2.jar:1187aa4fb666595c96c4deb6bc0e0f4b7e396bde9f6243330b49a232946130ea',
-			'com.android.tools:repository:26.1.2:repository-26.1.2.jar:8b86e512ad6d32bd76989451eefe2b271f5efce6d4d65ecb173afaf14606e01a',
-			'com.android.tools:sdk-common:26.1.2:sdk-common-26.1.2.jar:23584720a60a21cdcb5b1ec10269e3013789d6805d153cc696c39ec7ce251896',
-			'com.android.tools:sdklib:26.1.2:sdklib-26.1.2.jar:d3870fafc59ab8efa70d3f9649f40ee299c8ec5b58377b06e8853d7272a5bf4e',
+			'com.android.tools.analytics-library:protos:26.1.3:protos-26.1.3.jar:818c9f256f141d9dafec03a1aa2b94d240b2c140acfd7ee31a8b3e6c2b9479e3',
+			'com.android.tools.analytics-library:shared:26.1.3:shared-26.1.3.jar:7110706c7ada96c8b6f5ca80c478291bc7899d46277de2c48527e045442401a3',
+			'com.android.tools.analytics-library:tracker:26.1.3:tracker-26.1.3.jar:4155424bf2ce4872da83332579a1707252bc66cbd77c5144fdc4483d0f2e1418',
+			'com.android.tools.build:apksig:3.1.3:apksig-3.1.3.jar:7e1f8e675a6e768e5b56405e41d6c3cc05befe62e601b04177de1029902c9c89',
+			'com.android.tools.build:builder-model:3.1.3:builder-model-3.1.3.jar:06ad1c422d679fc698451479cb40ba863849d67bfd1de23f6d2c16d78b024b0b',
+			'com.android.tools.build:builder-test-api:3.1.3:builder-test-api-3.1.3.jar:4d989f780436794f0f8b2f50e9e079b786571eac90f26c208ab2ae6d4012f389',
+			'com.android.tools.build:builder:3.1.3:builder-3.1.3.jar:8a1092012c89d0ec1ee2eff09c5708c71ef4482a6862df8d3a44a67fccace01c',
+			'com.android.tools.build:gradle-api:3.1.3:gradle-api-3.1.3.jar:01e4df521456aef66514336f1d492346730dd1fb8f6433a89f62da834941ed72',
+			'com.android.tools.build:manifest-merger:26.1.3:manifest-merger-26.1.3.jar:1e4fc7e932adb4607082409800e5e6fccb42e6c5360ae5990094bf522f3ada55',
+			'com.android.tools.ddms:ddmlib:26.1.3:ddmlib-26.1.3.jar:c54931cd68df5d1ea2923b3b320eae47cd2307a5a916bb8674c0acf93cd1d3cd',
+			'com.android.tools.external.com-intellij:intellij-core:26.1.3:intellij-core-26.1.3.jar:af67f5535fef2e1a28b1007a4acb8c5deb6a1e33b8afe7b11d012c9e778ebcec',
+			'com.android.tools.external.com-intellij:kotlin-compiler:26.1.3:kotlin-compiler-26.1.3.jar:c746d2859dc11cc05c84b692b3498d3a621e0929511f8440ee009c6557838fd4',
+			'com.android.tools.external.org-jetbrains:uast:26.1.3:uast-26.1.3.jar:3f3f6651d0c7685a77ecb22e9c82d6b49fdf24322c17360768dc530678f43265',
+			'com.android.tools.layoutlib:layoutlib-api:26.1.3:layoutlib-api-26.1.3.jar:10bc73ce706c45629872d6a999dbe12116df64e24f47ff93b7b13121ff57b4b0',
+			'com.android.tools.lint:lint-api:26.1.3:lint-api-26.1.3.jar:6f97323f9af8deda86278717885b5c927f3766757db89709f52d11d42b6fb751',
+			'com.android.tools.lint:lint-checks:26.1.3:lint-checks-26.1.3.jar:73c3d53784c9ce3e6d5968506581918e0179645d20809927ca4a001dd766b001',
+			'com.android.tools.lint:lint-gradle-api:26.1.3:lint-gradle-api-26.1.3.jar:7ca3c4866ec21dc21d53a9d86f752b77ace6f6c610a0c9dc877313856c733d9d',
+			'com.android.tools.lint:lint-gradle:26.1.3:lint-gradle-26.1.3.jar:db0c354b8f4b6f6637e31f91c564785a59ff896325331fcbc3de7458e0b6c067',
+			'com.android.tools.lint:lint-kotlin:26.1.3:lint-kotlin-26.1.3.jar:94e2b0f4565a241561cfb8fc1222bb3f132a3b98d2a90421dbb72ee8358e7d68',
+			'com.android.tools.lint:lint:26.1.3:lint-26.1.3.jar:8d5f32c989c6d191d712e90ad3ca2d1c409313599551d04d834caa44d26c78df',
+			'com.android.tools:annotations:26.1.3:annotations-26.1.3.jar:c950430b24ac5d58fc97e7283b8f0115f99587e76e08b4e1e2aaa780f2d77323',
+			'com.android.tools:common:26.1.3:common-26.1.3.jar:7c31a90581a148ab219f615a59667f0dded7fa39b248529784474da3c2274ef2',
+			'com.android.tools:dvlib:26.1.3:dvlib-26.1.3.jar:0cae87906f53d3f1088366a916ed180a7312b6d9919b90797f238875c8492855',
+			'com.android.tools:repository:26.1.3:repository-26.1.3.jar:52d4539cc68db91b261e2a33b2c8206b26e05539078758dc28cfb3854adb4f59',
+			'com.android.tools:sdk-common:26.1.3:sdk-common-26.1.3.jar:1948603ca9ff22c7ebb3178000bffa3a9dd2ca1cc5cb0c793cae08468b8fcfc1',
+			'com.android.tools:sdklib:26.1.3:sdklib-26.1.3.jar:4adcfaad9514607098d2c51503c39811112d3050f4d1e744c01c7f08f591032b',
 			'com.google.code.findbugs:jsr305:1.3.9:jsr305-1.3.9.jar:905721a0eea90a81534abb7ee6ef4ea2e5e645fa1def0a5cd88402df1b46c9ed',
 			'com.google.code.gson:gson:2.7:gson-2.7.jar:2d43eb5ea9e133d2ee2405cc14f5ee08951b8361302fdd93494a3a997b508d32',
 			'com.google.dagger:dagger-compiler:2.0.2:dagger-compiler-2.0.2.jar:b74bc9de063dd4c6400b232231f2ef5056145b8fbecbf5382012007dd1c071b3',

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/plugin/bluetooth/AndroidBluetoothPlugin.java

@@ -38,6 +38,7 @@ import static android.bluetooth.BluetoothAdapter.SCAN_MODE_NONE;
 import static android.bluetooth.BluetoothAdapter.STATE_OFF;
 import static android.bluetooth.BluetoothAdapter.STATE_ON;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
@@ -145,7 +146,7 @@ class AndroidBluetoothPlugin extends BluetoothPlugin<BluetoothServerSocket> {
 		try {
 			if (ss != null) ss.close();
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -185,7 +186,7 @@ class AndroidBluetoothPlugin extends BluetoothPlugin<BluetoothServerSocket> {
 		try {
 			if (c != null) c.close();
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 

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

@@ -36,6 +36,7 @@ import org.briarproject.bramble.api.settings.event.SettingsUpdatedEvent;
 import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.bramble.api.system.LocationUtils;
 import org.briarproject.bramble.util.IoUtils;
+import org.briarproject.bramble.util.RenewableWakeLock;
 import org.briarproject.bramble.util.StringUtils;
 
 import java.io.Closeable;
@@ -49,7 +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;
@@ -90,6 +93,7 @@ import static org.briarproject.bramble.api.plugin.TorConstants.PREF_TOR_NETWORK_
 import static org.briarproject.bramble.api.plugin.TorConstants.PREF_TOR_NETWORK_WIFI;
 import static org.briarproject.bramble.api.plugin.TorConstants.PREF_TOR_PORT;
 import static org.briarproject.bramble.api.plugin.TorConstants.PROP_ONION;
+import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.bramble.util.PrivacyUtils.scrubOnion;
 
 @MethodsNotNullByDefault
@@ -103,6 +107,8 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 	private static final int COOKIE_TIMEOUT_MS = 3000;
 	private static final int COOKIE_POLLING_INTERVAL_MS = 200;
 	private static final Pattern ONION = Pattern.compile("[a-z2-7]{16}");
+	// This tag may prevent Huawei's power manager from killing us
+	private static final String WAKE_LOCK_TAG = "LocationManagerService";
 	private static final Logger LOG =
 			Logger.getLogger(TorPlugin.class.getName());
 
@@ -115,11 +121,12 @@ 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;
 	private final File doneFile, cookieFile;
-	private final PowerManager.WakeLock wakeLock;
+	private final RenewableWakeLock wakeLock;
 	private final AtomicReference<Future<?>> connectivityCheck =
 			new AtomicReference<>();
 	private final AtomicBoolean used = new AtomicBoolean(false);
@@ -134,7 +141,7 @@ 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;
@@ -144,6 +151,7 @@ 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)
@@ -156,14 +164,13 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 		configFile = new File(torDirectory, "torrc");
 		doneFile = new File(torDirectory, "done");
 		cookieFile = new File(torDirectory, ".tor/control_auth_cookie");
-		Object o = appContext.getSystemService(POWER_SERVICE);
-		PowerManager pm = (PowerManager) o;
-		// This tag will prevent Huawei's powermanager from killing us.
-		wakeLock = pm.newWakeLock(PARTIAL_WAKE_LOCK, "LocationManagerService");
-		wakeLock.setReferenceCounted(false);
 		// Don't execute more than one connection status check at a time
 		connectionStatusExecutor = new PoliteExecutor("TorPlugin",
 				ioExecutor, 1);
+		PowerManager pm = (PowerManager)
+				appContext.getSystemService(POWER_SERVICE);
+		wakeLock = new RenewableWakeLock(pm, scheduler, PARTIAL_WAKE_LOCK,
+				WAKE_LOCK_TAG, 1, MINUTES);
 	}
 
 	@Override
@@ -186,6 +193,8 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 		if (used.getAndSet(true)) throw new IllegalStateException();
 		// Install or update the assets if necessary
 		if (!assetsAreUpToDate()) installAssets();
+		if (cookieFile.exists() && !cookieFile.delete())
+			LOG.warning("Old auth cookie not deleted");
 		// Start a new Tor process
 		LOG.info("Starting Tor");
 		String torPath = torFile.getAbsolutePath();
@@ -343,7 +352,7 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 		try {
 			if (c != null) c.close();
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -351,7 +360,7 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 		try {
 			if (s != null) s.close();
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -393,7 +402,7 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 				ss = new ServerSocket();
 				ss.bind(new InetSocketAddress("127.0.0.1", port));
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				tryToClose(ss);
 				return;
 			}
@@ -419,7 +428,7 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 		try {
 			if (ss != null) ss.close();
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		} finally {
 			callback.transportDisabled();
 		}
@@ -438,7 +447,7 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 				response = controlConnection.addOnion(portLines);
 			else response = controlConnection.addOnion(privKey, portLines);
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			return;
 		}
 		if (!response.containsKey(HS_ADDRESS)) {
@@ -493,6 +502,17 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 		}
 	}
 
+	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");
+		}
+	}
+
 	@Override
 	public void stop() {
 		running = false;
@@ -506,7 +526,7 @@ class TorPlugin implements DuplexPlugin, EventHandler, EventListener {
 				controlConnection.shutdownTor("TERM");
 				controlSocket.close();
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 		wakeLock.release();
@@ -657,8 +677,8 @@ 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);
 
@@ -672,19 +692,26 @@ 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) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, 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/java/org/briarproject/bramble/util/RenewableWakeLock.java

@@ -0,0 +1,100 @@
+package org.briarproject.bramble.util;
+
+import android.os.PowerManager;
+
+import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.TimeUnit;
+import java.util.logging.Logger;
+
+import javax.annotation.Nullable;
+import javax.annotation.concurrent.ThreadSafe;
+
+import static java.util.concurrent.TimeUnit.MILLISECONDS;
+import static java.util.logging.Level.INFO;
+
+@ThreadSafe
+@NotNullByDefault
+public class RenewableWakeLock {
+
+	private static final Logger LOG =
+			Logger.getLogger(RenewableWakeLock.class.getName());
+
+	/**
+	 * Automatically release the lock this many milliseconds after it's due
+	 * to have been replaced and released.
+	 */
+	private static final int SAFETY_MARGIN_MS = 10_000;
+
+	private final PowerManager powerManager;
+	private final ScheduledExecutorService scheduler;
+	private final int levelAndFlags;
+	private final String tag;
+	private final long durationMs;
+	private final Runnable renewTask;
+
+	private final Object lock = new Object();
+	@Nullable
+	private PowerManager.WakeLock wakeLock; // Locking: lock
+	@Nullable
+	private ScheduledFuture future; // Locking: lock
+
+	public RenewableWakeLock(PowerManager powerManager,
+			ScheduledExecutorService scheduler, int levelAndFlags, String tag,
+			long duration, TimeUnit timeUnit) {
+		this.powerManager = powerManager;
+		this.scheduler = scheduler;
+		this.levelAndFlags = levelAndFlags;
+		this.tag = tag;
+		durationMs = MILLISECONDS.convert(duration, timeUnit);
+		renewTask = this::renew;
+	}
+
+	public void acquire() {
+		if (LOG.isLoggable(INFO)) LOG.info("Acquiring wake lock " + tag);
+		synchronized (lock) {
+			if (wakeLock != null) {
+				LOG.info("Already acquired");
+				return;
+			}
+			wakeLock = powerManager.newWakeLock(levelAndFlags, tag);
+			wakeLock.setReferenceCounted(false);
+			wakeLock.acquire(durationMs + SAFETY_MARGIN_MS);
+			future = scheduler.schedule(renewTask, durationMs, MILLISECONDS);
+		}
+	}
+
+	private void renew() {
+		if (LOG.isLoggable(INFO)) LOG.info("Renewing wake lock " + tag);
+		synchronized (lock) {
+			if (wakeLock == null) {
+				LOG.info("Already released");
+				return;
+			}
+			PowerManager.WakeLock oldWakeLock = wakeLock;
+			wakeLock = powerManager.newWakeLock(levelAndFlags, tag);
+			wakeLock.setReferenceCounted(false);
+			wakeLock.acquire(durationMs + SAFETY_MARGIN_MS);
+			oldWakeLock.release();
+			future = scheduler.schedule(renewTask, durationMs, MILLISECONDS);
+		}
+	}
+
+	public void release() {
+		if (LOG.isLoggable(INFO)) LOG.info("Releasing wake lock " + tag);
+		synchronized (lock) {
+			if (wakeLock == null) {
+				LOG.info("Already released");
+				return;
+			}
+			if (future == null) throw new AssertionError();
+			future.cancel(false);
+			future = null;
+			wakeLock.release();
+			wakeLock = null;
+		}
+	}
+}
+

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/account/AccountManager.java

@@ -0,0 +1,39 @@
+package org.briarproject.bramble.api.account;
+
+import org.briarproject.bramble.api.crypto.CryptoExecutor;
+import org.briarproject.bramble.api.identity.IdentityManager;
+import org.briarproject.bramble.api.identity.LocalAuthor;
+import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+
+import javax.annotation.Nullable;
+
+@NotNullByDefault
+public interface AccountManager {
+
+	@CryptoExecutor
+	void createAccount(String name, String password);
+
+	AccountState getAccountState();
+
+	/**
+	 * Returns the name of the {@link LocalAuthor} if it was just created and
+	 * null otherwise.
+	 *
+	 * See {@link IdentityManager#getLocalAuthor()} for reliable retrieval.
+	 */
+	@Nullable
+	String getCreatedLocalAuthorName();
+
+	/**
+	 * Validates the account password and returns true if it was valid.
+	 */
+	boolean validatePassword(String password);
+
+	/**
+	 * Changes the password and returns true if successful, false otherwise.
+	 */
+	@CryptoExecutor
+	boolean changePassword(String password, String newPassword);
+
+	void deleteAccount();
+}

bramble-api/src/main/java/org/briarproject/bramble/api/account/AccountState.java

@@ -0,0 +1,12 @@
+package org.briarproject.bramble.api.account;
+
+public enum AccountState {
+
+	NO_ACCOUNT,
+	CREATING_ACCOUNT,
+	SIGNING_IN,
+	SIGNED_IN,
+	SIGNING_OUT,
+	SIGNED_OUT
+
+}

bramble-api/src/main/java/org/briarproject/bramble/api/db/DatabaseConfig.java

@@ -21,10 +21,5 @@ public interface DatabaseConfig {
 	@Nullable
 	SecretKey getEncryptionKey();
 
-	void setLocalAuthorName(String nickname);
-
-	@Nullable
-	String getLocalAuthorName();
-
 	long getMaxSize();
 }

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

bramble-api/src/main/java/org/briarproject/bramble/util/LogUtils.java

@@ -0,0 +1,36 @@
+package org.briarproject.bramble.util;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import static java.util.logging.Level.FINE;
+
+public class LogUtils {
+
+	private static final int NANOS_PER_MILLI = 1000 * 1000;
+
+	/**
+	 * Returns the elapsed time in milliseconds since some arbitrary
+	 * starting time. This is only useful for measuring elapsed time.
+	 */
+	public static long now() {
+		return System.nanoTime() / NANOS_PER_MILLI;
+	}
+
+	/**
+	 * Logs the duration of a task.
+	 * @param logger the logger to use
+	 * @param task a description of the task
+	 * @param start the start time of the task, as returned by {@link #now()}
+	 */
+	public static void logDuration(Logger logger, String task, long start) {
+		if (logger.isLoggable(FINE)) {
+			long duration = now() - start;
+			logger.fine(task + " took " + duration + " ms");
+		}
+	}
+
+	public static void logException(Logger logger, Level level, Throwable t) {
+		if (logger.isLoggable(level)) logger.log(level, t.toString(), t);
+	}
+}

bramble-core/src/main/java/org/briarproject/bramble/PoliteExecutor.java

@@ -5,12 +5,12 @@ import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import java.util.LinkedList;
 import java.util.Queue;
 import java.util.concurrent.Executor;
-import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import javax.annotation.concurrent.GuardedBy;
 
 import static java.util.logging.Level.FINE;
+import static org.briarproject.bramble.util.LogUtils.now;
 
 /**
  * An {@link Executor} that delegates its tasks to another {@link Executor}
@@ -20,8 +20,6 @@ import static java.util.logging.Level.FINE;
 @NotNullByDefault
 public class PoliteExecutor implements Executor {
 
-	private static final Level LOG_LEVEL = FINE;
-
 	private final Object lock = new Object();
 	@GuardedBy("lock")
 	private final Queue<Runnable> queue = new LinkedList<>();
@@ -49,11 +47,11 @@ public class PoliteExecutor implements Executor {
 
 	@Override
 	public void execute(Runnable r) {
-		long submitted = System.currentTimeMillis();
+		long submitted = now();
 		Runnable wrapped = () -> {
-			if (log.isLoggable(LOG_LEVEL)) {
-				long queued = System.currentTimeMillis() - submitted;
-				log.log(LOG_LEVEL, "Queue time " + queued + " ms");
+			if (log.isLoggable(FINE)) {
+				long queued = now() - submitted;
+				log.fine("Queue time " + queued + " ms");
 			}
 			try {
 				r.run();

bramble-core/src/main/java/org/briarproject/bramble/TimeLoggingExecutor.java

@@ -6,16 +6,14 @@ import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.RejectedExecutionHandler;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
-import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import static java.util.logging.Level.FINE;
+import static org.briarproject.bramble.util.LogUtils.now;
 
 @NotNullByDefault
 public class TimeLoggingExecutor extends ThreadPoolExecutor {
 
-	private static final Level LOG_LEVEL = FINE;
-
 	private final Logger log;
 
 	public TimeLoggingExecutor(String tag, int corePoolSize, int maxPoolSize,
@@ -29,15 +27,15 @@ public class TimeLoggingExecutor extends ThreadPoolExecutor {
 
 	@Override
 	public void execute(Runnable r) {
-		if (log.isLoggable(LOG_LEVEL)) {
-			long submitted = System.currentTimeMillis();
+		if (log.isLoggable(FINE)) {
+			long submitted = now();
 			super.execute(() -> {
-				long started = System.currentTimeMillis();
+				long started = now();
 				long queued = started - submitted;
-				log.log(LOG_LEVEL, "Queue time " + queued + " ms");
+				log.fine("Queue time " + queued + " ms");
 				r.run();
-				long executing = System.currentTimeMillis() - started;
-				log.log(LOG_LEVEL, "Execution time " + executing + " ms");
+				long executing = now() - started;
+				log.fine("Execution time " + executing + " ms");
 			});
 		} else {
 			super.execute(r);

bramble-core/src/main/java/org/briarproject/bramble/account/AccountManagerImpl.java

@@ -0,0 +1,127 @@
+package org.briarproject.bramble.account;
+
+
+import org.briarproject.bramble.api.account.AccountManager;
+import org.briarproject.bramble.api.account.AccountState;
+import org.briarproject.bramble.api.crypto.CryptoComponent;
+import org.briarproject.bramble.api.crypto.CryptoExecutor;
+import org.briarproject.bramble.api.crypto.SecretKey;
+import org.briarproject.bramble.api.db.DatabaseConfig;
+import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.bramble.util.StringUtils;
+
+import java.util.logging.Logger;
+
+import javax.annotation.Nullable;
+
+import static java.util.logging.Level.INFO;
+import static org.briarproject.bramble.api.account.AccountState.CREATING_ACCOUNT;
+import static org.briarproject.bramble.api.account.AccountState.NO_ACCOUNT;
+import static org.briarproject.bramble.api.account.AccountState.SIGNED_IN;
+import static org.briarproject.bramble.api.account.AccountState.SIGNED_OUT;
+import static org.briarproject.bramble.util.LogUtils.logDuration;
+import static org.briarproject.bramble.util.LogUtils.now;
+
+@NotNullByDefault
+public abstract class AccountManagerImpl implements AccountManager {
+
+	private final static Logger LOG =
+			Logger.getLogger(AccountManagerImpl.class.getSimpleName());
+
+	protected final DatabaseConfig databaseConfig;
+	private final CryptoComponent crypto;
+	@Nullable
+	private volatile String nickname = null;
+
+	public AccountManagerImpl(CryptoComponent crypto,
+			DatabaseConfig databaseConfig) {
+		this.crypto = crypto;
+		this.databaseConfig = databaseConfig;
+	}
+
+	protected abstract boolean storeEncryptedDatabaseKey(String hex);
+
+	@Nullable
+	protected abstract String getEncryptedDatabaseKey();
+
+	private boolean hasEncryptedDatabaseKey() {
+		return getEncryptedDatabaseKey() != null;
+	}
+
+	@Override
+	@CryptoExecutor
+	public void createAccount(String name, String password) {
+		LOG.info("Setting local author name");
+		this.nickname = name;
+		SecretKey key = crypto.generateSecretKey();
+		databaseConfig.setEncryptionKey(key);
+		String hex = encryptDatabaseKey(key, password);
+		storeEncryptedDatabaseKey(hex);
+	}
+
+	@Override
+	public AccountState getAccountState() {
+		AccountState state;
+		if (!databaseConfig.databaseExists() && nickname != null &&
+				hasEncryptedDatabaseKey()) {
+			state = CREATING_ACCOUNT;
+		} else if (!hasEncryptedDatabaseKey()) {
+			state = NO_ACCOUNT;
+		} else if (databaseConfig.getEncryptionKey() == null) {
+			state = SIGNED_OUT;
+		} else {
+			state = SIGNED_IN;
+		}
+		// TODO SIGNING_IN, SIGNING_OUT, DELETING_ACCOUNT
+		if (LOG.isLoggable(INFO)) LOG.info("Account State: " + state.name());
+		return state;
+	}
+
+	@Nullable
+	@Override
+	public String getCreatedLocalAuthorName() {
+		String nickname = this.nickname;
+		if (LOG.isLoggable(INFO))
+			LOG.info("Local author name has been set: " + (nickname != null));
+		return nickname;
+	}
+
+	@CryptoExecutor
+	private String encryptDatabaseKey(SecretKey key, String password) {
+		long start = now();
+		byte[] encrypted = crypto.encryptWithPassword(key.getBytes(), password);
+		logDuration(LOG, "Key derivation", start);
+		return StringUtils.toHexString(encrypted);
+	}
+
+	@Override
+	public boolean validatePassword(String password) {
+		byte[] encrypted = getEncryptedKeyAsBytes();
+		byte[] key = crypto.decryptWithPassword(encrypted, password);
+		if (key == null) {
+			return false;
+		}
+		databaseConfig.setEncryptionKey(new SecretKey(key));
+		return true;
+	}
+
+	@Override
+	@CryptoExecutor
+	public boolean changePassword(String password, String newPassword) {
+		byte[] encrypted = getEncryptedKeyAsBytes();
+		byte[] key = crypto.decryptWithPassword(encrypted, password);
+		if (key == null) {
+			return false;
+		}
+		String hex = encryptDatabaseKey(new SecretKey(key), newPassword);
+		return storeEncryptedDatabaseKey(hex);
+	}
+
+	private byte[] getEncryptedKeyAsBytes() {
+		String hex = getEncryptedDatabaseKey();
+		if (hex == null)
+			throw new IllegalStateException("Encrypted database key is null");
+		return StringUtils.fromHexString(hex);
+	}
+
+}

bramble-core/src/main/java/org/briarproject/bramble/contact/ContactExchangeTaskImpl.java

@@ -46,6 +46,7 @@ import javax.inject.Inject;
 import static java.util.logging.Level.WARNING;
 import static org.briarproject.bramble.api.contact.RecordTypes.CONTACT_INFO;
 import static org.briarproject.bramble.api.identity.AuthorConstants.MAX_SIGNATURE_LENGTH;
+import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.bramble.util.ValidationUtils.checkLength;
 import static org.briarproject.bramble.util.ValidationUtils.checkSize;
 
@@ -122,7 +123,7 @@ class ContactExchangeTaskImpl extends Thread implements ContactExchangeTask {
 			in = conn.getReader().getInputStream();
 			out = conn.getWriter().getOutputStream();
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			listener.contactExchangeFailed();
 			tryToClose(conn);
 			return;
@@ -133,7 +134,7 @@ class ContactExchangeTaskImpl extends Thread implements ContactExchangeTask {
 		try {
 			localProperties = transportPropertyManager.getLocalProperties();
 		} catch (DbException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			listener.contactExchangeFailed();
 			tryToClose(conn);
 			return;
@@ -194,7 +195,7 @@ class ContactExchangeTaskImpl extends Thread implements ContactExchangeTask {
 				LOG.info("End of stream");
 			}
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			listener.contactExchangeFailed();
 			tryToClose(conn);
 			return;
@@ -222,11 +223,11 @@ class ContactExchangeTaskImpl extends Thread implements ContactExchangeTask {
 			LOG.info("Pseudonym exchange succeeded");
 			listener.contactExchangeSucceeded(remoteInfo.author);
 		} catch (ContactExistsException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			tryToClose(conn);
 			listener.duplicateContact(remoteInfo.author);
 		} catch (DbException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			tryToClose(conn);
 			listener.contactExchangeFailed();
 		}
@@ -307,7 +308,7 @@ class ContactExchangeTaskImpl extends Thread implements ContactExchangeTask {
 			conn.getReader().dispose(true, true);
 			conn.getWriter().dispose(true);
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 

bramble-core/src/main/java/org/briarproject/bramble/crypto/CryptoComponentImpl.java

@@ -32,6 +32,8 @@ import javax.inject.Inject;
 
 import static java.util.logging.Level.INFO;
 import static org.briarproject.bramble.util.ByteUtils.INT_32_BYTES;
+import static org.briarproject.bramble.util.LogUtils.logDuration;
+import static org.briarproject.bramble.util.LogUtils.now;
 
 @NotNullByDefault
 class CryptoComponentImpl implements CryptoComponent {
@@ -127,16 +129,14 @@ class CryptoComponentImpl implements CryptoComponent {
 			throw new IllegalArgumentException();
 		if (!(pub instanceof Curve25519PublicKey))
 			throw new IllegalArgumentException();
-		long now = System.currentTimeMillis();
+		long start = now();
 		byte[] secret = curve25519.calculateAgreement(pub.getEncoded(),
 				priv.getEncoded());
 		// If the shared secret is all zeroes, the public key is invalid
 		byte allZero = 0;
 		for (byte b : secret) allZero |= b;
 		if (allZero == 0) throw new GeneralSecurityException();
-		long duration = System.currentTimeMillis() - now;
-		if (LOG.isLoggable(INFO))
-			LOG.info("Deriving shared secret took " + duration + " ms");
+		logDuration(LOG, "Deriving shared secret", start);
 		return secret;
 	}
 

bramble-core/src/main/java/org/briarproject/bramble/crypto/ScryptKdf.java

@@ -10,6 +10,8 @@ import java.util.logging.Logger;
 import javax.inject.Inject;
 
 import static java.util.logging.Level.INFO;
+import static org.briarproject.bramble.util.LogUtils.logDuration;
+import static org.briarproject.bramble.util.LogUtils.now;
 
 class ScryptKdf implements PasswordBasedKdf {
 
@@ -50,13 +52,11 @@ class ScryptKdf implements PasswordBasedKdf {
 
 	@Override
 	public SecretKey deriveKey(String password, byte[] salt, int cost) {
-		long start = System.currentTimeMillis();
+		long start = now();
 		byte[] passwordBytes = StringUtils.toUtf8(password);
 		SecretKey k = new SecretKey(SCrypt.generate(passwordBytes, salt, cost,
 				BLOCK_SIZE, PARALLELIZATION, SecretKey.LENGTH));
-		long duration = System.currentTimeMillis() - start;
-		if (LOG.isLoggable(INFO))
-			LOG.info("Deriving key from password took " + duration + " ms");
+		logDuration(LOG, "Deriving key from password", start);
 		return k;
 	}
 }

bramble-core/src/main/java/org/briarproject/bramble/crypto/Sec1KeyParser.java

@@ -16,7 +16,8 @@ import java.util.logging.Logger;
 
 import javax.annotation.concurrent.Immutable;
 
-import static java.util.logging.Level.INFO;
+import static org.briarproject.bramble.util.LogUtils.logDuration;
+import static org.briarproject.bramble.util.LogUtils.now;
 
 /**
  * A key parser that uses the encoding defined in "SEC 1: Elliptic Curve
@@ -48,7 +49,7 @@ class Sec1KeyParser implements KeyParser {
 			throws GeneralSecurityException {
 		// The validation procedure comes from SEC 1, section 3.2.2.1. Note
 		// that SEC 1 parameter names are used below, not RFC 5639 names
-		long now = System.currentTimeMillis();
+		long start = now();
 		if (encodedKey.length != publicKeyBytes)
 			throw new GeneralSecurityException();
 		// The first byte must be 0x04
@@ -80,16 +81,14 @@ class Sec1KeyParser implements KeyParser {
 		// Construct a public key from the point (x, y) and the params
 		ECPublicKeyParameters k = new ECPublicKeyParameters(pub, params);
 		PublicKey p = new Sec1PublicKey(k);
-		long duration = System.currentTimeMillis() - now;
-		if (LOG.isLoggable(INFO))
-			LOG.info("Parsing public key took " + duration + " ms");
+		logDuration(LOG, "Parsing public key", start);
 		return p;
 	}
 
 	@Override
 	public PrivateKey parsePrivateKey(byte[] encodedKey)
 			throws GeneralSecurityException {
-		long now = System.currentTimeMillis();
+		long start = now();
 		if (encodedKey.length != privateKeyBytes)
 			throw new GeneralSecurityException();
 		BigInteger d = new BigInteger(1, encodedKey); // Positive signum
@@ -99,9 +98,7 @@ class Sec1KeyParser implements KeyParser {
 		// Construct a private key from the private value and the params
 		ECPrivateKeyParameters k = new ECPrivateKeyParameters(d, params);
 		PrivateKey p = new Sec1PrivateKey(k, keyBits);
-		long duration = System.currentTimeMillis() - now;
-		if (LOG.isLoggable(INFO))
-			LOG.info("Parsing private key took " + duration + " ms");
+		logDuration(LOG, "Parsing private key", start);
 		return p;
 	}
 }

bramble-core/src/main/java/org/briarproject/bramble/db/DatabaseComponentImpl.java

@@ -68,13 +68,15 @@ import javax.annotation.Nullable;
 import javax.annotation.concurrent.ThreadSafe;
 import javax.inject.Inject;
 
-import static java.util.logging.Level.FINE;
 import static java.util.logging.Level.WARNING;
 import static org.briarproject.bramble.api.sync.Group.Visibility.INVISIBLE;
 import static org.briarproject.bramble.api.sync.Group.Visibility.SHARED;
 import static org.briarproject.bramble.api.sync.ValidationManager.State.DELIVERED;
 import static org.briarproject.bramble.api.sync.ValidationManager.State.UNKNOWN;
 import static org.briarproject.bramble.db.DatabaseConstants.MAX_OFFERED_MESSAGES;
+import static org.briarproject.bramble.util.LogUtils.logDuration;
+import static org.briarproject.bramble.util.LogUtils.logException;
+import static org.briarproject.bramble.util.LogUtils.now;
 
 @ThreadSafe
 @NotNullByDefault
@@ -108,7 +110,7 @@ class DatabaseComponentImpl<T> implements DatabaseComponent {
 			try {
 				close();
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 		return reopened;
@@ -125,13 +127,13 @@ class DatabaseComponentImpl<T> implements DatabaseComponent {
 		// Don't allow reentrant locking
 		if (lock.getReadHoldCount() > 0) throw new IllegalStateException();
 		if (lock.getWriteHoldCount() > 0) throw new IllegalStateException();
-		long start = System.currentTimeMillis();
-		if (readOnly) lock.readLock().lock();
-		else lock.writeLock().lock();
-		if (LOG.isLoggable(FINE)) {
-			long duration = System.currentTimeMillis() - start;
-			if (readOnly) LOG.fine("Waited " + duration + " ms for read lock");
-			else LOG.fine("Waited " + duration + " ms for write lock");
+		long start = now();
+		if (readOnly) {
+			lock.readLock().lock();
+			logDuration(LOG, "Waiting for read lock", start);
+		} else {
+			lock.writeLock().lock();
+			logDuration(LOG, "Waiting for write lock", start);
 		}
 		try {
 			return new Transaction(db.startTransaction(), readOnly);

bramble-core/src/main/java/org/briarproject/bramble/db/JdbcDatabase.java

@@ -66,6 +66,7 @@ import static org.briarproject.bramble.api.sync.ValidationManager.State.UNKNOWN;
 import static org.briarproject.bramble.db.DatabaseConstants.DB_SETTINGS_NAMESPACE;
 import static org.briarproject.bramble.db.DatabaseConstants.SCHEMA_VERSION_KEY;
 import static org.briarproject.bramble.db.ExponentialBackoff.calculateExpiry;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 /**
  * A generic database implementation that can be used with any JDBC-compatible
@@ -404,7 +405,7 @@ abstract class JdbcDatabase implements Database<Connection> {
 		try {
 			if (rs != null) rs.close();
 		} catch (SQLException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -412,7 +413,7 @@ abstract class JdbcDatabase implements Database<Connection> {
 		try {
 			if (s != null) s.close();
 		} catch (SQLException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -509,12 +510,11 @@ abstract class JdbcDatabase implements Database<Connection> {
 			}
 		} catch (SQLException e) {
 			// Try to close the connection
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			try {
 				txn.close();
 			} catch (SQLException e1) {
-				if (LOG.isLoggable(WARNING))
-					LOG.log(WARNING, e1.toString(), e1);
+				logException(LOG, WARNING, e1);
 			}
 			// Whatever happens, allow the database to close
 			connectionsLock.lock();

bramble-core/src/main/java/org/briarproject/bramble/db/Migration38_39.java

@@ -10,6 +10,7 @@ import java.util.logging.Logger;
 import javax.annotation.Nullable;
 
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 class Migration38_39 implements Migration<Connection> {
 
@@ -48,7 +49,7 @@ class Migration38_39 implements Migration<Connection> {
 		try {
 			if (s != null) s.close();
 		} catch (SQLException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 }

bramble-core/src/main/java/org/briarproject/bramble/keyagreement/KeyAgreementConnector.java

@@ -31,6 +31,7 @@ import javax.annotation.Nullable;
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
 import static org.briarproject.bramble.api.keyagreement.KeyAgreementConstants.CONNECTION_TIMEOUT;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @NotNullByDefault
 class KeyAgreementConnector {
@@ -134,7 +135,7 @@ class KeyAgreementConnector {
 			Thread.currentThread().interrupt();
 			return null;
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			return null;
 		} finally {
 			stopListening();

bramble-core/src/main/java/org/briarproject/bramble/keyagreement/KeyAgreementTaskImpl.java

@@ -28,6 +28,7 @@ import java.util.logging.Logger;
 import javax.inject.Inject;
 
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
@@ -120,13 +121,11 @@ class KeyAgreementTaskImpl extends Thread implements KeyAgreementTask,
 			// Broadcast result to caller
 			eventBus.broadcast(new KeyAgreementFinishedEvent(result));
 		} catch (AbortException e) {
-			if (LOG.isLoggable(WARNING))
-				LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			// Notify caller that the protocol was aborted
 			eventBus.broadcast(new KeyAgreementAbortedEvent(e.receivedAbort));
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING))
-				LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			// Notify caller that the connection failed
 			eventBus.broadcast(new KeyAgreementFailedEvent());
 		}

bramble-core/src/main/java/org/briarproject/bramble/keyagreement/KeyAgreementTransport.java

@@ -20,6 +20,7 @@ import static org.briarproject.bramble.api.keyagreement.KeyAgreementConstants.PR
 import static org.briarproject.bramble.api.keyagreement.RecordTypes.ABORT;
 import static org.briarproject.bramble.api.keyagreement.RecordTypes.CONFIRM;
 import static org.briarproject.bramble.api.keyagreement.RecordTypes.KEY;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 /**
  * Handles the sending and receiving of BQP records.
@@ -72,7 +73,7 @@ class KeyAgreementTransport {
 		try {
 			writeRecord(ABORT, new byte[0]);
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			exception = true;
 		}
 		tryToClose(exception);
@@ -83,7 +84,7 @@ class KeyAgreementTransport {
 			kac.getConnection().getReader().dispose(exception, true);
 			kac.getConnection().getWriter().dispose(exception);
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 

bramble-core/src/main/java/org/briarproject/bramble/lifecycle/LifecycleManagerImpl.java

@@ -30,6 +30,7 @@ import javax.annotation.Nullable;
 import javax.annotation.concurrent.ThreadSafe;
 import javax.inject.Inject;
 
+import static java.util.logging.Level.FINE;
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
 import static org.briarproject.bramble.api.lifecycle.LifecycleManager.LifecycleState.MIGRATING_DATABASE;
@@ -43,6 +44,9 @@ import static org.briarproject.bramble.api.lifecycle.LifecycleManager.StartResul
 import static org.briarproject.bramble.api.lifecycle.LifecycleManager.StartResult.DB_ERROR;
 import static org.briarproject.bramble.api.lifecycle.LifecycleManager.StartResult.SERVICE_ERROR;
 import static org.briarproject.bramble.api.lifecycle.LifecycleManager.StartResult.SUCCESS;
+import static org.briarproject.bramble.util.LogUtils.logDuration;
+import static org.briarproject.bramble.util.LogUtils.logException;
+import static org.briarproject.bramble.util.LogUtils.now;
 
 @ThreadSafe
 @NotNullByDefault
@@ -101,24 +105,20 @@ class LifecycleManagerImpl implements LifecycleManager, MigrationListener {
 	}
 
 	private LocalAuthor createLocalAuthor(String nickname) {
-		long now = System.currentTimeMillis();
+		long start = now();
 		KeyPair keyPair = crypto.generateSignatureKeyPair();
 		byte[] publicKey = keyPair.getPublic().getEncoded();
 		byte[] privateKey = keyPair.getPrivate().getEncoded();
 		LocalAuthor localAuthor = authorFactory
 				.createLocalAuthor(nickname, publicKey, privateKey);
-		long duration = System.currentTimeMillis() - now;
-		if (LOG.isLoggable(INFO))
-			LOG.info("Creating local author took " + duration + " ms");
+		logDuration(LOG, "Creating local author", start);
 		return localAuthor;
 	}
 
 	private void registerLocalAuthor(LocalAuthor author) throws DbException {
-		long now = System.currentTimeMillis();
+		long start = now();
 		identityManager.registerLocalAuthor(author);
-		long duration = System.currentTimeMillis() - now;
-		if (LOG.isLoggable(INFO))
-			LOG.info("Registering local author took " + duration + " ms");
+		logDuration(LOG, "Registering local author", start);
 	}
 
 	@Override
@@ -129,15 +129,11 @@ class LifecycleManagerImpl implements LifecycleManager, MigrationListener {
 		}
 		try {
 			LOG.info("Starting services");
-			long start = System.currentTimeMillis();
+			long start = now();
 
 			boolean reopened = db.open(this);
-			long duration = System.currentTimeMillis() - start;
-			if (LOG.isLoggable(INFO)) {
-				if (reopened)
-					LOG.info("Reopening database took " + duration + " ms");
-				else LOG.info("Creating database took " + duration + " ms");
-			}
+			if (reopened) logDuration(LOG, "Reopening database", start);
+			else logDuration(LOG, "Creating database", start);
 
 			if (nickname != null) {
 				registerLocalAuthor(createLocalAuthor(nickname));
@@ -150,13 +146,11 @@ class LifecycleManagerImpl implements LifecycleManager, MigrationListener {
 			Transaction txn = db.startTransaction(false);
 			try {
 				for (Client c : clients) {
-					start = System.currentTimeMillis();
+					start = now();
 					c.createLocalState(txn);
-					duration = System.currentTimeMillis() - start;
-					if (LOG.isLoggable(INFO)) {
-						LOG.info("Starting client "
-								+ c.getClass().getSimpleName()
-								+ " took " + duration + " ms");
+					if (LOG.isLoggable(FINE)) {
+						logDuration(LOG, "Starting client "
+								+ c.getClass().getSimpleName(), start);
 					}
 				}
 				db.commitTransaction(txn);
@@ -164,12 +158,11 @@ class LifecycleManagerImpl implements LifecycleManager, MigrationListener {
 				db.endTransaction(txn);
 			}
 			for (Service s : services) {
-				start = System.currentTimeMillis();
+				start = now();
 				s.startService();
-				duration = System.currentTimeMillis() - start;
-				if (LOG.isLoggable(INFO)) {
-					LOG.info("Starting service " + s.getClass().getSimpleName()
-							+ " took " + duration + " ms");
+				if (LOG.isLoggable(FINE)) {
+					logDuration(LOG, "Starting service "
+							+ s.getClass().getSimpleName(), start);
 				}
 			}
 
@@ -178,16 +171,16 @@ class LifecycleManagerImpl implements LifecycleManager, MigrationListener {
 			eventBus.broadcast(new LifecycleEvent(RUNNING));
 			return SUCCESS;
 		} catch (DataTooOldException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			return DATA_TOO_OLD_ERROR;
 		} catch (DataTooNewException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			return DATA_TOO_NEW_ERROR;
 		} catch (DbException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			return DB_ERROR;
 		} catch (ServiceException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			return SERVICE_ERROR;
 		} finally {
 			startStopSemaphore.release();
@@ -213,29 +206,26 @@ class LifecycleManagerImpl implements LifecycleManager, MigrationListener {
 			state = STOPPING;
 			eventBus.broadcast(new LifecycleEvent(STOPPING));
 			for (Service s : services) {
-				long start = System.currentTimeMillis();
+				long start = now();
 				s.stopService();
-				long duration = System.currentTimeMillis() - start;
-				if (LOG.isLoggable(INFO)) {
-					LOG.info("Stopping service " + s.getClass().getSimpleName()
-							+ " took " + duration + " ms");
+				if (LOG.isLoggable(FINE)) {
+					logDuration(LOG, "Stopping service "
+							+ s.getClass().getSimpleName(), start);
 				}
 			}
 			for (ExecutorService e : executors) {
-				if (LOG.isLoggable(INFO)) {
-					LOG.info("Stopping executor "
+				if (LOG.isLoggable(FINE)) {
+					LOG.fine("Stopping executor "
 							+ e.getClass().getSimpleName());
 				}
 				e.shutdownNow();
 			}
-			long start = System.currentTimeMillis();
+			long start = now();
 			db.close();
-			long duration = System.currentTimeMillis() - start;
-			if (LOG.isLoggable(INFO))
-				LOG.info("Closing database took " + duration + " ms");
+			logDuration(LOG, "Closing database", start);
 			shutdownLatch.countDown();
 		} catch (DbException | ServiceException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		} finally {
 			startStopSemaphore.release();
 		}

bramble-core/src/main/java/org/briarproject/bramble/plugin/ConnectionManagerImpl.java

@@ -27,6 +27,7 @@ import javax.inject.Inject;
 
 import static java.util.logging.Level.WARNING;
 import static org.briarproject.bramble.api.transport.TransportConstants.TAG_LENGTH;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 class ConnectionManagerImpl implements ConnectionManager {
 
@@ -135,7 +136,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 				byte[] tag = readTag(reader);
 				ctx = keyManager.getStreamContext(transportId, tag);
 			} catch (IOException | DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				disposeReader(true, false);
 				return;
 			}
@@ -151,7 +152,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 				createIncomingSession(ctx, reader).run();
 				disposeReader(false, true);
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				disposeReader(true, true);
 			} finally {
 				connectionRegistry.unregisterConnection(contactId, transportId,
@@ -163,7 +164,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 			try {
 				reader.dispose(exception, recognised);
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 	}
@@ -188,7 +189,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 			try {
 				ctx = keyManager.getStreamContext(contactId, transportId);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				disposeWriter(true);
 				return;
 			}
@@ -204,7 +205,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 				createSimplexOutgoingSession(ctx, writer).run();
 				disposeWriter(false);
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				disposeWriter(true);
 			} finally {
 				connectionRegistry.unregisterConnection(contactId, transportId,
@@ -216,7 +217,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 			try {
 				writer.dispose(exception);
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 	}
@@ -246,7 +247,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 				byte[] tag = readTag(reader);
 				ctx = keyManager.getStreamContext(transportId, tag);
 			} catch (IOException | DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				disposeReader(true, false);
 				return;
 			}
@@ -265,7 +266,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 				incomingSession.run();
 				disposeReader(false, true);
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				disposeReader(true, true);
 			} finally {
 				connectionRegistry.unregisterConnection(contactId, transportId,
@@ -279,7 +280,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 			try {
 				ctx = keyManager.getStreamContext(contactId, transportId);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				disposeWriter(true);
 				return;
 			}
@@ -294,7 +295,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 				outgoingSession.run();
 				disposeWriter(false);
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				disposeWriter(true);
 			}
 		}
@@ -305,7 +306,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 			try {
 				reader.dispose(exception, recognised);
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 
@@ -317,7 +318,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 			try {
 				writer.dispose(exception);
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 	}
@@ -347,7 +348,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 			try {
 				ctx = keyManager.getStreamContext(contactId, transportId);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				disposeWriter(true);
 				return;
 			}
@@ -364,7 +365,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 				outgoingSession.run();
 				disposeWriter(false);
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				disposeWriter(true);
 			}
 		}
@@ -376,7 +377,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 				byte[] tag = readTag(reader);
 				ctx = keyManager.getStreamContext(transportId, tag);
 			} catch (IOException | DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				disposeReader(true, false);
 				return;
 			}
@@ -400,7 +401,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 				incomingSession.run();
 				disposeReader(false, true);
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				disposeReader(true, true);
 			} finally {
 				connectionRegistry.unregisterConnection(contactId, transportId,
@@ -414,7 +415,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 			try {
 				reader.dispose(exception, recognised);
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 
@@ -426,7 +427,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 			try {
 				writer.dispose(exception);
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 	}

bramble-core/src/main/java/org/briarproject/bramble/plugin/PluginManagerImpl.java

@@ -49,8 +49,12 @@ import java.util.logging.Logger;
 import javax.annotation.concurrent.ThreadSafe;
 import javax.inject.Inject;
 
+import static java.util.logging.Level.FINE;
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logDuration;
+import static org.briarproject.bramble.util.LogUtils.logException;
+import static org.briarproject.bramble.util.LogUtils.now;
 
 @ThreadSafe
 @NotNullByDefault
@@ -205,17 +209,16 @@ class PluginManagerImpl implements PluginManager, Service {
 		@Override
 		public void run() {
 			try {
-				long start = System.currentTimeMillis();
+				long start = now();
 				plugin.start();
-				long duration = System.currentTimeMillis() - start;
-				if (LOG.isLoggable(INFO)) {
-					LOG.info("Starting plugin " + plugin.getId() + " took " +
-							duration + " ms");
+				if (LOG.isLoggable(FINE)) {
+					logDuration(LOG, "Starting plugin " + plugin.getId(),
+							start);
 				}
 			} catch (PluginException e) {
 				if (LOG.isLoggable(WARNING)) {
 					LOG.warning("Plugin " + plugin.getId() + " did not start");
-					LOG.log(WARNING, e.toString(), e);
+					logException(LOG, WARNING, e);
 				}
 			} finally {
 				startLatch.countDown();
@@ -243,12 +246,11 @@ class PluginManagerImpl implements PluginManager, Service {
 				// Wait for the plugin to finish starting
 				startLatch.await();
 				// Stop the plugin
-				long start = System.currentTimeMillis();
+				long start = now();
 				plugin.stop();
-				long duration = System.currentTimeMillis() - start;
-				if (LOG.isLoggable(INFO)) {
-					LOG.info("Stopping plugin " + plugin.getId()
-							+ " took " + duration + " ms");
+				if (LOG.isLoggable(FINE)) {
+					logDuration(LOG, "Stopping plugin " + plugin.getId(),
+							start);
 				}
 			} catch (InterruptedException e) {
 				LOG.warning("Interrupted while waiting for plugin to stop");
@@ -256,7 +258,7 @@ class PluginManagerImpl implements PluginManager, Service {
 			} catch (PluginException e) {
 				if (LOG.isLoggable(WARNING)) {
 					LOG.warning("Plugin " + plugin.getId() + " did not stop");
-					LOG.log(WARNING, e.toString(), e);
+					logException(LOG, WARNING, e);
 				}
 			} finally {
 				stopLatch.countDown();
@@ -278,7 +280,7 @@ class PluginManagerImpl implements PluginManager, Service {
 			try {
 				return settingsManager.getSettings(id.getString());
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				return new Settings();
 			}
 		}
@@ -288,7 +290,7 @@ class PluginManagerImpl implements PluginManager, Service {
 			try {
 				return transportPropertyManager.getLocalProperties(id);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				return new TransportProperties();
 			}
 		}
@@ -298,7 +300,7 @@ class PluginManagerImpl implements PluginManager, Service {
 			try {
 				settingsManager.mergeSettings(s, id.getString());
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 
@@ -307,7 +309,7 @@ class PluginManagerImpl implements PluginManager, Service {
 			try {
 				transportPropertyManager.mergeLocalProperties(id, p);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 

bramble-core/src/main/java/org/briarproject/bramble/plugin/Poller.java

@@ -41,6 +41,7 @@ import javax.annotation.concurrent.ThreadSafe;
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @ThreadSafe
 @NotNullByDefault
@@ -134,7 +135,7 @@ class Poller implements EventListener {
 				if (w != null)
 					connectionManager.manageOutgoingConnection(c, t, w);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}
@@ -150,7 +151,7 @@ class Poller implements EventListener {
 				if (d != null)
 					connectionManager.manageOutgoingConnection(c, t, d);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}
@@ -211,7 +212,7 @@ class Poller implements EventListener {
 			remote.keySet().removeAll(connected);
 			if (!remote.isEmpty()) p.poll(remote);
 		} catch (DbException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 

bramble-core/src/main/java/org/briarproject/bramble/plugin/bluetooth/BluetoothConnectionLimiterImpl.java

@@ -13,6 +13,7 @@ import javax.annotation.concurrent.ThreadSafe;
 
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @NotNullByDefault
 @ThreadSafe
@@ -92,7 +93,7 @@ class BluetoothConnectionLimiterImpl implements BluetoothConnectionLimiter {
 			conn.getWriter().dispose(false);
 			conn.getReader().dispose(false, false);
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 

bramble-core/src/main/java/org/briarproject/bramble/plugin/bluetooth/BluetoothPlugin.java

@@ -43,6 +43,7 @@ import static org.briarproject.bramble.api.plugin.BluetoothConstants.PREF_BT_ENA
 import static org.briarproject.bramble.api.plugin.BluetoothConstants.PROP_ADDRESS;
 import static org.briarproject.bramble.api.plugin.BluetoothConstants.PROP_UUID;
 import static org.briarproject.bramble.api.plugin.BluetoothConstants.UUID_BYTES;
+import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.bramble.util.PrivacyUtils.scrubMacAddress;
 
 @MethodsNotNullByDefault
@@ -169,7 +170,7 @@ abstract class BluetoothPlugin<SS> implements DuplexPlugin, EventListener {
 			try {
 				ss = openServerSocket(contactConnectionsUuid);
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				return;
 			}
 			if (!isRunning() || !shouldAllowContactConnections()) {
@@ -336,7 +337,7 @@ abstract class BluetoothPlugin<SS> implements DuplexPlugin, EventListener {
 		try {
 			ss = openServerSocket(uuid);
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			return null;
 		}
 		if (!isRunning()) {

bramble-core/src/main/java/org/briarproject/bramble/plugin/file/FilePlugin.java

@@ -15,6 +15,7 @@ import java.util.logging.Logger;
 
 import static java.util.logging.Level.WARNING;
 import static org.briarproject.bramble.api.plugin.FileConstants.PROP_PATH;
+import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.bramble.util.StringUtils.isNullOrEmpty;
 
 @NotNullByDefault
@@ -51,7 +52,7 @@ abstract class FilePlugin implements SimplexPlugin {
 			FileInputStream in = new FileInputStream(file);
 			return new FileTransportReader(file, in, this);
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			return null;
 		}
 	}
@@ -70,7 +71,7 @@ abstract class FilePlugin implements SimplexPlugin {
 			FileOutputStream out = new FileOutputStream(file);
 			return new FileTransportWriter(file, out, this);
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			return null;
 		}
 	}

bramble-core/src/main/java/org/briarproject/bramble/plugin/file/FileTransportReader.java

@@ -9,6 +9,7 @@ import java.io.InputStream;
 import java.util.logging.Logger;
 
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @NotNullByDefault
 class FileTransportReader implements TransportConnectionReader {
@@ -36,7 +37,7 @@ class FileTransportReader implements TransportConnectionReader {
 		try {
 			in.close();
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 		plugin.readerFinished(file, exception, recognised);
 	}

bramble-core/src/main/java/org/briarproject/bramble/plugin/file/FileTransportWriter.java

@@ -9,6 +9,7 @@ import java.io.OutputStream;
 import java.util.logging.Logger;
 
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @NotNullByDefault
 class FileTransportWriter implements TransportConnectionWriter {
@@ -46,7 +47,7 @@ class FileTransportWriter implements TransportConnectionWriter {
 		try {
 			out.close();
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 		plugin.writerFinished(file, exception);
 	}

bramble-core/src/main/java/org/briarproject/bramble/plugin/tcp/LanTcpPlugin.java

@@ -35,6 +35,7 @@ import static org.briarproject.bramble.api.plugin.LanTcpConstants.ID;
 import static org.briarproject.bramble.api.plugin.LanTcpConstants.PREF_LAN_IP_PORTS;
 import static org.briarproject.bramble.api.plugin.LanTcpConstants.PROP_IP_PORTS;
 import static org.briarproject.bramble.util.ByteUtils.MAX_16_BIT_UNSIGNED;
+import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.bramble.util.PrivacyUtils.scrubSocketAddress;
 
 @NotNullByDefault
@@ -295,7 +296,7 @@ class LanTcpPlugin extends TcpPlugin {
 			try {
 				ss.close();
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 	}

bramble-core/src/main/java/org/briarproject/bramble/plugin/tcp/PortMapperImpl.java

@@ -17,6 +17,7 @@ import javax.xml.parsers.ParserConfigurationException;
 
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.bramble.util.PrivacyUtils.scrubInetAddress;
 
 @ThreadSafe
@@ -59,7 +60,7 @@ class PortMapperImpl implements PortMapper {
 			if (externalString != null)
 				external = InetAddress.getByName(externalString);
 		} catch (IOException | SAXException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 		return new MappingResult(internal, external, port, succeeded);
 	}
@@ -76,7 +77,7 @@ class PortMapperImpl implements PortMapper {
 		try {
 			d.discover();
 		} catch (IOException | SAXException | ParserConfigurationException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 		gateway = d.getValidGateway();
 	}
@@ -87,7 +88,7 @@ class PortMapperImpl implements PortMapper {
 			if (LOG.isLoggable(INFO))
 				LOG.info("Deleted mapping for port " + port);
 		} catch (IOException | SAXException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 }

bramble-core/src/main/java/org/briarproject/bramble/plugin/tcp/TcpPlugin.java

@@ -37,6 +37,7 @@ import javax.annotation.Nullable;
 
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.bramble.util.PrivacyUtils.scrubSocketAddress;
 
 @MethodsNotNullByDefault
@@ -152,7 +153,7 @@ abstract class TcpPlugin implements DuplexPlugin {
 		try {
 			if (ss != null) ss.close();
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		} finally {
 			callback.transportDisabled();
 		}
@@ -306,7 +307,7 @@ abstract class TcpPlugin implements DuplexPlugin {
 		try {
 			ifaces = Collections.list(NetworkInterface.getNetworkInterfaces());
 		} catch (SocketException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			return Collections.emptyList();
 		}
 		List<InetAddress> addrs = new ArrayList<>();

bramble-core/src/main/java/org/briarproject/bramble/reliability/ReliabilityLayerImpl.java

@@ -16,6 +16,7 @@ import java.util.logging.Logger;
 
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
@@ -78,7 +79,7 @@ class ReliabilityLayerImpl implements ReliabilityLayer, WriteHandler {
 				Thread.currentThread().interrupt();
 				running = false;
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				running = false;
 			}
 		});

bramble-core/src/main/java/org/briarproject/bramble/reporting/DevReporterImpl.java

@@ -32,6 +32,7 @@ import javax.inject.Inject;
 import javax.net.SocketFactory;
 
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @Immutable
 @NotNullByDefault
@@ -132,7 +133,7 @@ class DevReporterImpl implements DevReporter, EventListener {
 		try {
 			if (c != null) c.close();
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -140,7 +141,7 @@ class DevReporterImpl implements DevReporter, EventListener {
 		try {
 			if (s != null) s.close();
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 }

bramble-core/src/main/java/org/briarproject/bramble/sync/DuplexOutgoingSession.java

@@ -42,6 +42,7 @@ import static java.util.logging.Level.WARNING;
 import static org.briarproject.bramble.api.lifecycle.LifecycleManager.LifecycleState.STOPPING;
 import static org.briarproject.bramble.api.record.Record.MAX_RECORD_PAYLOAD_BYTES;
 import static org.briarproject.bramble.api.sync.SyncConstants.MAX_MESSAGE_IDS;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 /**
  * An outgoing {@link SyncSession} suitable for duplex transports. The session
@@ -240,7 +241,7 @@ class DuplexOutgoingSession implements SyncSession, EventListener {
 					LOG.info("Generated ack: " + (a != null));
 				if (a != null) writerTasks.add(new WriteAck(a));
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				interrupt();
 			}
 		}
@@ -287,7 +288,7 @@ class DuplexOutgoingSession implements SyncSession, EventListener {
 					LOG.info("Generated batch: " + (b != null));
 				if (b != null) writerTasks.add(new WriteBatch(b));
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				interrupt();
 			}
 		}
@@ -334,7 +335,7 @@ class DuplexOutgoingSession implements SyncSession, EventListener {
 					LOG.info("Generated offer: " + (o != null));
 				if (o != null) writerTasks.add(new WriteOffer(o));
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				interrupt();
 			}
 		}
@@ -379,7 +380,7 @@ class DuplexOutgoingSession implements SyncSession, EventListener {
 					LOG.info("Generated request: " + (r != null));
 				if (r != null) writerTasks.add(new WriteRequest(r));
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				interrupt();
 			}
 		}

bramble-core/src/main/java/org/briarproject/bramble/sync/IncomingSession.java

@@ -28,6 +28,7 @@ import javax.annotation.concurrent.ThreadSafe;
 
 import static java.util.logging.Level.WARNING;
 import static org.briarproject.bramble.api.lifecycle.LifecycleManager.LifecycleState.STOPPING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 /**
  * An incoming {@link SyncSession}.
@@ -127,7 +128,7 @@ class IncomingSession implements SyncSession, EventListener {
 					db.endTransaction(txn);
 				}
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				interrupt();
 			}
 		}
@@ -153,7 +154,7 @@ class IncomingSession implements SyncSession, EventListener {
 					db.endTransaction(txn);
 				}
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				interrupt();
 			}
 		}
@@ -179,7 +180,7 @@ class IncomingSession implements SyncSession, EventListener {
 					db.endTransaction(txn);
 				}
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				interrupt();
 			}
 		}
@@ -205,7 +206,7 @@ class IncomingSession implements SyncSession, EventListener {
 					db.endTransaction(txn);
 				}
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				interrupt();
 			}
 		}

bramble-core/src/main/java/org/briarproject/bramble/sync/SimplexOutgoingSession.java

@@ -32,6 +32,7 @@ import static java.util.logging.Level.WARNING;
 import static org.briarproject.bramble.api.lifecycle.LifecycleManager.LifecycleState.STOPPING;
 import static org.briarproject.bramble.api.record.Record.MAX_RECORD_PAYLOAD_BYTES;
 import static org.briarproject.bramble.api.sync.SyncConstants.MAX_MESSAGE_IDS;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 /**
  * An outgoing {@link SyncSession} suitable for simplex transports. The session
@@ -139,7 +140,7 @@ class SimplexOutgoingSession implements SyncSession, EventListener {
 				if (a == null) decrementOutstandingQueries();
 				else writerTasks.add(new WriteAck(a));
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				interrupt();
 			}
 		}
@@ -184,7 +185,7 @@ class SimplexOutgoingSession implements SyncSession, EventListener {
 				if (b == null) decrementOutstandingQueries();
 				else writerTasks.add(new WriteBatch(b));
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				interrupt();
 			}
 		}

bramble-core/src/main/java/org/briarproject/bramble/sync/ValidationManagerImpl.java

@@ -40,6 +40,7 @@ import static java.util.logging.Level.WARNING;
 import static org.briarproject.bramble.api.sync.ValidationManager.State.DELIVERED;
 import static org.briarproject.bramble.api.sync.ValidationManager.State.INVALID;
 import static org.briarproject.bramble.api.sync.ValidationManager.State.PENDING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @ThreadSafe
 @NotNullByDefault
@@ -110,7 +111,7 @@ class ValidationManagerImpl implements ValidationManager, Service,
 			}
 			validateNextMessageAsync(unvalidated);
 		} catch (DbException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -144,7 +145,7 @@ class ValidationManagerImpl implements ValidationManager, Service,
 			LOG.info("Group removed before validation");
 			validateNextMessageAsync(unvalidated);
 		} catch (DbException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -165,7 +166,7 @@ class ValidationManagerImpl implements ValidationManager, Service,
 			}
 			deliverNextPendingMessageAsync(pending);
 		} catch (DbException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -231,7 +232,7 @@ class ValidationManagerImpl implements ValidationManager, Service,
 			LOG.info("Group removed before delivery");
 			deliverNextPendingMessageAsync(pending);
 		} catch (DbException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -252,8 +253,7 @@ class ValidationManagerImpl implements ValidationManager, Service,
 				storeMessageContextAsync(m, g.getClientId(),
 						g.getMajorVersion(), context);
 			} catch (InvalidMessageException e) {
-				if (LOG.isLoggable(INFO))
-					LOG.log(INFO, e.toString(), e);
+				logException(LOG, INFO, e);
 				Queue<MessageId> invalidate = new LinkedList<>();
 				invalidate.add(m.getId());
 				invalidateNextMessageAsync(invalidate);
@@ -326,7 +326,7 @@ class ValidationManagerImpl implements ValidationManager, Service,
 		} catch (NoSuchGroupException e) {
 			LOG.info("Group removed during validation");
 		} catch (DbException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -377,7 +377,7 @@ class ValidationManagerImpl implements ValidationManager, Service,
 			}
 			shareNextMessageAsync(toShare);
 		} catch (DbException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -412,7 +412,7 @@ class ValidationManagerImpl implements ValidationManager, Service,
 			LOG.info("Group removed before sharing");
 			shareNextMessageAsync(toShare);
 		} catch (DbException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -440,7 +440,7 @@ class ValidationManagerImpl implements ValidationManager, Service,
 			LOG.info("Message removed before invalidation");
 			invalidateNextMessageAsync(invalidate);
 		} catch (DbException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -492,7 +492,7 @@ class ValidationManagerImpl implements ValidationManager, Service,
 		} catch (NoSuchGroupException e) {
 			LOG.info("Group removed before validation");
 		} catch (DbException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 

bramble-core/src/main/java/org/briarproject/bramble/system/LinuxSecureRandomProvider.java

@@ -13,6 +13,7 @@ import java.util.logging.Logger;
 import javax.annotation.concurrent.Immutable;
 
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @Immutable
 @NotNullByDefault
@@ -49,7 +50,7 @@ class LinuxSecureRandomProvider extends AbstractSecureRandomProvider {
 			out.close();
 		} catch (IOException e) {
 			// On some devices /dev/urandom isn't writable - this isn't fatal
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 

bramble-core/src/main/java/org/briarproject/bramble/system/LinuxSecureRandomSpi.java

@@ -10,6 +10,7 @@ import java.security.SecureRandomSpi;
 import java.util.logging.Logger;
 
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 public class LinuxSecureRandomSpi extends SecureRandomSpi {
 
@@ -39,7 +40,7 @@ public class LinuxSecureRandomSpi extends SecureRandomSpi {
 			out.close();
 		} catch (IOException e) {
 			// On some devices /dev/urandom isn't writable - this isn't fatal
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 

bramble-core/src/main/java/org/briarproject/bramble/transport/TransportKeyManagerImpl.java

@@ -36,6 +36,7 @@ import static org.briarproject.bramble.api.transport.TransportConstants.MAX_CLOC
 import static org.briarproject.bramble.api.transport.TransportConstants.PROTOCOL_VERSION;
 import static org.briarproject.bramble.api.transport.TransportConstants.TAG_LENGTH;
 import static org.briarproject.bramble.util.ByteUtils.MAX_32_BIT_UNSIGNED;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @ThreadSafe
 @NotNullByDefault
@@ -169,7 +170,7 @@ class TransportKeyManagerImpl implements TransportKeyManager {
 					db.endTransaction(txn);
 				}
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}

bramble-core/src/test/java/org/briarproject/bramble/test/TestDatabaseConfig.java

@@ -46,16 +46,6 @@ public class TestDatabaseConfig implements DatabaseConfig {
 		return key;
 	}
 
-	@Override
-	public void setLocalAuthorName(String nickname) {
-
-	}
-
-	@Override
-	public String getLocalAuthorName() {
-		return null;
-	}
-
 	@Override
 	public long getMaxSize() {
 		return maxSize;

bramble-j2se/src/main/java/org/briarproject/bramble/lifecycle/WindowsShutdownManagerImpl.java

@@ -28,6 +28,7 @@ import javax.annotation.concurrent.ThreadSafe;
 import static com.sun.jna.Library.OPTION_FUNCTION_MAPPER;
 import static com.sun.jna.Library.OPTION_TYPE_MAPPER;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @ThreadSafe
 @NotNullByDefault
@@ -141,7 +142,7 @@ class WindowsShutdownManagerImpl extends ShutdownManagerImpl {
 					user32.DispatchMessage(msg);
 				}
 			} catch (UnsatisfiedLinkError e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 	}

bramble-j2se/src/main/java/org/briarproject/bramble/plugin/bluetooth/JavaBluetoothPlugin.java

@@ -19,6 +19,7 @@ import javax.microedition.io.StreamConnection;
 import javax.microedition.io.StreamConnectionNotifier;
 
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.bramble.util.StringUtils.isValidMac;
 
 @MethodsNotNullByDefault
@@ -85,7 +86,7 @@ class JavaBluetoothPlugin extends BluetoothPlugin<StreamConnectionNotifier> {
 		try {
 			if (ss != null) ss.close();
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 

bramble-j2se/src/main/java/org/briarproject/bramble/plugin/modem/ModemImpl.java

@@ -27,6 +27,7 @@ import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
 import static jssc.SerialPort.PURGE_RXCLEAR;
 import static jssc.SerialPort.PURGE_TXCLEAR;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
@@ -136,7 +137,7 @@ class ModemImpl implements Modem, WriteHandler, SerialPortEventListener {
 		try {
 			if (port != null) port.closePort();
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -327,7 +328,7 @@ class ModemImpl implements Modem, WriteHandler, SerialPortEventListener {
 				}
 			}
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 		}
 	}
 
@@ -394,8 +395,7 @@ class ModemImpl implements Modem, WriteHandler, SerialPortEventListener {
 						try {
 							answer();
 						} catch (IOException e) {
-							if (LOG.isLoggable(WARNING))
-								LOG.log(WARNING, e.toString(), e);
+							logException(LOG, WARNING, e);
 						}
 					});
 				}

bramble-j2se/src/main/java/org/briarproject/bramble/plugin/modem/ModemPlugin.java

@@ -23,6 +23,7 @@ import java.util.logging.Logger;
 
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
@@ -81,7 +82,7 @@ class ModemPlugin implements DuplexPlugin, Modem.Callback {
 				running = true;
 				return;
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 		throw new PluginException();
@@ -94,7 +95,7 @@ class ModemPlugin implements DuplexPlugin, Modem.Callback {
 			try {
 				modem.stop();
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 	}
@@ -131,7 +132,7 @@ class ModemPlugin implements DuplexPlugin, Modem.Callback {
 					LOG.info("Initialised modem on " + portName);
 				return true;
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		}
 		running = false;
@@ -157,7 +158,7 @@ class ModemPlugin implements DuplexPlugin, Modem.Callback {
 		try {
 			if (!modem.dial(number)) return null;
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			resetModem();
 			return null;
 		}
@@ -209,7 +210,7 @@ class ModemPlugin implements DuplexPlugin, Modem.Callback {
 			try {
 				modem.hangUp();
 			} catch (IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				exception = true;
 			}
 			if (exception) resetModem();

briar-android/artwork/notification_ongoing.svg

@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Generator: Adobe Illustrator 19.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="Ebene_1"
+   x="0px"
+   y="0px"
+   viewBox="0 0 24 24"
+   xml:space="preserve"
+   inkscape:version="0.92.3 (2405546, 2018-03-11)"
+   sodipodi:docname="notification_ongoing.svg"
+   width="24"
+   height="24"><metadata
+     id="metadata61"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title /></cc:Work></rdf:RDF></metadata><defs
+     id="defs59" /><sodipodi:namedview
+     pagecolor="#000000"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1920"
+     inkscape:window-height="1020"
+     id="namedview57"
+     showgrid="false"
+     inkscape:zoom="11.466748"
+     inkscape:cx="-4.790356"
+     inkscape:cy="17.536496"
+     inkscape:window-x="1442"
+     inkscape:window-y="24"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="Ebene_1"
+     units="px" /><style
+     type="text/css"
+     id="style3">
+	.st0{fill:#FFFFFF;}
+	.st1{display:none;fill:#87C214;}
+	.st2{fill:#87C214;}
+	.st3{display:none;fill:#FFFFFF;}
+	.st4{fill:#95D220;}
+	.st5{display:none;fill:#95D220;}
+</style><path
+     style="fill:#ffffff;stroke-width:0.07272727"
+     d="M 12,0 A 12,12 0 0 0 0,12 12,12 0 0 0 12,24 12,12 0 0 0 24,12 12,12 0 0 0 12,0 Z M 8.1454545,3.4764204 h 0.6036931 c 0.7054546,0 1.2872164,0.5817614 1.2872164,1.287216 V 6.4 H 6.8582386 V 4.7636364 c 0,-0.7054546 0.5817614,-1.287216 1.2872159,-1.287216 z m 7.0545455,0 h 0.603693 c 0.712727,0 1.287216,0.5817614 1.287216,1.287216 V 13.454545 H 13.912784 V 4.7636364 c 0,-0.7054546 0.581761,-1.287216 1.287216,-1.287216 z M 4.7127841,6.9090909 H 13.403693 V 10.087216 H 4.7127841 c -0.7127273,0 -1.287358,-0.5817618 -1.287358,-1.2872156 V 8.1963069 c 0,-0.7127273 0.5819034,-1.287216 1.287358,-1.287216 z m 12.8872159,0 h 1.636364 c 0.705454,0 1.279943,0.5817615 1.287216,1.287216 v 0.6036935 c 0,0.7127269 -0.581762,1.2872156 -1.287216,1.2872156 H 17.6 Z M 6.8582386,10.596307 h 3.1781254 v 8.690909 c 0,0.705454 -0.5817618,1.287358 -1.2872164,1.287358 H 8.1454545 c -0.7127272,0 -1.2872159,-0.581904 -1.2872159,-1.287358 z m -2.1454545,3.367329 h 1.6363636 v 3.178125 H 4.7127841 c -0.7127273,0 -1.287358,-0.581761 -1.287358,-1.287216 v -0.603693 c 0,-0.712727 0.5819034,-1.287216 1.287358,-1.287216 z m 5.8326709,0 h 8.690909 c 0.705454,0 1.279943,0.581761 1.287216,1.287216 v 0.603693 c 0,0.705455 -0.581762,1.287216 -1.287216,1.287216 h -8.690909 z m 3.367329,3.687216 h 3.178125 v 1.636364 c 0,0.705454 -0.581761,1.287358 -1.287216,1.287358 H 15.2 c -0.705455,0 -1.287216,-0.581904 -1.287216,-1.287358 z"
+     id="circle7"
+     inkscape:connector-curvature="0" /></svg>

briar-android/artwork/notification_reminder.svg

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Generator: Adobe Illustrator 19.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="Ebene_1"
+   x="0px"
+   y="0px"
+   viewBox="0 0 24 24"
+   xml:space="preserve"
+   inkscape:version="0.92.3 (2405546, 2018-03-11)"
+   sodipodi:docname="notification_reminder.svg"
+   width="24"
+   height="24"><metadata
+     id="metadata61"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title /></cc:Work></rdf:RDF></metadata><defs
+     id="defs59" /><sodipodi:namedview
+     pagecolor="#000000"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1920"
+     inkscape:window-height="1020"
+     id="namedview57"
+     showgrid="false"
+     inkscape:zoom="32.43286"
+     inkscape:cx="6.4172501"
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+     inkscape:window-x="1442"
+     inkscape:window-y="24"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="Ebene_1"
+     units="px" /><style
+     type="text/css"
+     id="style3">
+	.st0{fill:#FFFFFF;}
+	.st1{display:none;fill:#87C214;}
+	.st2{fill:#87C214;}
+	.st3{display:none;fill:#FFFFFF;}
+	.st4{fill:#95D220;}
+	.st5{display:none;fill:#95D220;}
+</style><path
+     style="display:inline;fill:#ffffff;stroke-width:0.07272727"
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+     id="circle7" /></svg>

briar-android/build.gradle

@@ -22,7 +22,7 @@ dependencies {
 	implementation "com.android.support:support-annotations:$supportVersion"
 	implementation 'com.android.support.constraint:constraint-layout:1.1.0'
 
-	implementation('ch.acra:acra:4.8.5') {
+	implementation('ch.acra:acra:4.9.1') {
 		exclude module: 'support-v4'
 		exclude module: 'support-annotations'
 	}
@@ -61,7 +61,7 @@ dependencyVerification {
 			'android.arch.lifecycle:viewmodel:1.1.0:viewmodel-1.1.0.aar:6407c93a5ea9850661dca42a0068d6f3deccefd7228ee69bae1c35d70cbc2557',
 			'backport-util-concurrent:backport-util-concurrent:3.1:backport-util-concurrent-3.1.jar:f5759b7fcdfc83a525a036deedcbd32e5b536b625ebc282426f16ca137eb5902',
 			'cglib:cglib:3.2.0:cglib-3.2.0.jar:adb13bab79712ad6bdf1bd59f2a3918018a8016e722e8a357065afb9e6690861',
-			'ch.acra:acra:4.8.5:acra-4.8.5.aar:afd5b28934d5166b55f261c85685ad59e8a4ebe9ca1960906afaa8c76d8dc9eb',
+			'ch.acra:acra:4.9.1:acra-4.9.1.aar:d2762968c448757a7d6acc9f141881d9632f664988e9723ece33b5f7c79f3bc9',
 			'classworlds:classworlds:1.1-alpha-2:classworlds-1.1-alpha-2.jar:2bf4e59f3acd106fea6145a9a88fe8956509f8b9c0fdd11eb96fee757269e3f3',
 			'com.almworks.sqlite4java:sqlite4java:0.282:sqlite4java-0.282.jar:9e1d8dd83ca6003f841e3af878ce2dc7c22497493a7bb6d1b62ec1b0d0a83c05',
 			'com.android.support.constraint:constraint-layout-solver:1.1.0:constraint-layout-solver-1.1.0.jar:fcb4c7d705754ca3d69b1b2c3caf445a425599fda8caabbcf855d98ea0663e4e',
@@ -82,32 +82,32 @@ dependencyVerification {
 			'com.android.support:support-v4:27.1.1:support-v4-27.1.1.aar:4f41dfc3e89f2738e45c86264a85c0934d055ee8ebe2020e23c97f303b80a48b',
 			'com.android.support:support-vector-drawable:27.1.1:support-vector-drawable-27.1.1.aar:1c0f421114cf4627cf208776d6eb4f76340c78b7e96fe6e12b3e6eb950caf1b9',
 			'com.android.support:transition:27.1.1:transition-27.1.1.aar:c0765b2f3c78696567ec5b3f519d22da1e3df11ac994625adf4bb4dc571caacc',
-			'com.android.tools.analytics-library:protos:26.1.2:protos-26.1.2.jar:52672a0b42b572a06aecc3535d5068eb46c0e15d129b9f1085d3c16a1da5cdbb',
-			'com.android.tools.analytics-library:shared:26.1.2:shared-26.1.2.jar:5c7e0eda18c6f87feeb83628c707e8aaa3298b41fb72e38efe31ad1675f9e8e9',
-			'com.android.tools.analytics-library:tracker:26.1.2:tracker-26.1.2.jar:06f97aa0adf44ffb06f8681c6a79d9be153a08f61d21eddc42b8d3db96df4282',
-			'com.android.tools.build:apksig:3.1.2:apksig-3.1.2.jar:40696a4559124d1d57873d208857eee059d48859239d569c7d18374ac644a8be',
-			'com.android.tools.build:builder-model:3.1.2:builder-model-3.1.2.jar:d49bfa2a135c9562b6ca7aa4342036cfa1582c7074c2d1d93d1dae8b3a134e17',
-			'com.android.tools.build:builder-test-api:3.1.2:builder-test-api-3.1.2.jar:dfe2a50b740d41b11189101062434d4283d18647e89a492ad51710c719363e9f',
-			'com.android.tools.build:builder:3.1.2:builder-3.1.2.jar:b60f825a42e2efe8433619fbc759f3d9effecab718279048d36881188ceb1d14',
-			'com.android.tools.build:gradle-api:3.1.2:gradle-api-3.1.2.jar:e58bcc5b893e4583ab0f5c8ef89c4dbcce202b405a9d7fcc116d21e5357d4893',
-			'com.android.tools.build:manifest-merger:26.1.2:manifest-merger-26.1.2.jar:9c61c27ea5266573107b954acf1216d398f4d7e7ae6fad6409d6b2b767eb091c',
-			'com.android.tools.ddms:ddmlib:26.1.2:ddmlib-26.1.2.jar:18a2a5fbef36882f07d03c2b9e59eba05cf8248177bf5cbff736e4b582804c44',
-			'com.android.tools.external.com-intellij:intellij-core:26.1.2:intellij-core-26.1.2.jar:37c5acf279f1ae3e85b1a5be3c9f15f43bde7b08f978eefefffb9c4035760c52',
-			'com.android.tools.external.com-intellij:kotlin-compiler:26.1.2:kotlin-compiler-26.1.2.jar:152df0bee7580326c77316b669a9d96e3b09efb1d45f545dce4147271b0b8944',
-			'com.android.tools.external.org-jetbrains:uast:26.1.2:uast-26.1.2.jar:02d39582206d3f5fc0a6cb18bfd9e8b9f9c1acb805ec6dac08b4e3a56849d279',
-			'com.android.tools.layoutlib:layoutlib-api:26.1.2:layoutlib-api-26.1.2.jar:20220039fcc7d799f928153beff862e704457c0f55ab44258f3745ebeb662b4f',
-			'com.android.tools.lint:lint-api:26.1.2:lint-api-26.1.2.jar:e1d5b62b870a7c566e9877a6b96b27784a4d713f8caa07fdcb4705d47a40a1d9',
-			'com.android.tools.lint:lint-checks:26.1.2:lint-checks-26.1.2.jar:211e2afd58504372385d71b1e5be982c2b5121ab6fee1c04ddabeb75a8729e07',
-			'com.android.tools.lint:lint-gradle-api:26.1.2:lint-gradle-api-26.1.2.jar:71284f2a8b03c3e55c94511c9eb36f8184fbb85324325fc6b78abf5183f03d90',
-			'com.android.tools.lint:lint-gradle:26.1.2:lint-gradle-26.1.2.jar:855f0c82b7fc690df1b7319c0774f7517f7f8f5dd4eee1f6077dcf50e07c6240',
-			'com.android.tools.lint:lint-kotlin:26.1.2:lint-kotlin-26.1.2.jar:1e591f70bcbbc11569720a9bbcca2bc1f3d4f789f01f40f642848d920643d484',
-			'com.android.tools.lint:lint:26.1.2:lint-26.1.2.jar:93736c62e9f1976998c2b4aa716aea0734cdb162d05502f4af7292654aedb182',
-			'com.android.tools:annotations:26.1.2:annotations-26.1.2.jar:72773dcaf5c4ccca828e3c8467f1b78a8a00b3cc5f8ad1aab88fcf9379928018',
-			'com.android.tools:common:26.1.2:common-26.1.2.jar:ea4320f0c17dcbc4491896bb705c4d25ec08bd62ef02ab0579fe154e75e788e6',
-			'com.android.tools:dvlib:26.1.2:dvlib-26.1.2.jar:1187aa4fb666595c96c4deb6bc0e0f4b7e396bde9f6243330b49a232946130ea',
-			'com.android.tools:repository:26.1.2:repository-26.1.2.jar:8b86e512ad6d32bd76989451eefe2b271f5efce6d4d65ecb173afaf14606e01a',
-			'com.android.tools:sdk-common:26.1.2:sdk-common-26.1.2.jar:23584720a60a21cdcb5b1ec10269e3013789d6805d153cc696c39ec7ce251896',
-			'com.android.tools:sdklib:26.1.2:sdklib-26.1.2.jar:d3870fafc59ab8efa70d3f9649f40ee299c8ec5b58377b06e8853d7272a5bf4e',
+			'com.android.tools.analytics-library:protos:26.1.3:protos-26.1.3.jar:818c9f256f141d9dafec03a1aa2b94d240b2c140acfd7ee31a8b3e6c2b9479e3',
+			'com.android.tools.analytics-library:shared:26.1.3:shared-26.1.3.jar:7110706c7ada96c8b6f5ca80c478291bc7899d46277de2c48527e045442401a3',
+			'com.android.tools.analytics-library:tracker:26.1.3:tracker-26.1.3.jar:4155424bf2ce4872da83332579a1707252bc66cbd77c5144fdc4483d0f2e1418',
+			'com.android.tools.build:apksig:3.1.3:apksig-3.1.3.jar:7e1f8e675a6e768e5b56405e41d6c3cc05befe62e601b04177de1029902c9c89',
+			'com.android.tools.build:builder-model:3.1.3:builder-model-3.1.3.jar:06ad1c422d679fc698451479cb40ba863849d67bfd1de23f6d2c16d78b024b0b',
+			'com.android.tools.build:builder-test-api:3.1.3:builder-test-api-3.1.3.jar:4d989f780436794f0f8b2f50e9e079b786571eac90f26c208ab2ae6d4012f389',
+			'com.android.tools.build:builder:3.1.3:builder-3.1.3.jar:8a1092012c89d0ec1ee2eff09c5708c71ef4482a6862df8d3a44a67fccace01c',
+			'com.android.tools.build:gradle-api:3.1.3:gradle-api-3.1.3.jar:01e4df521456aef66514336f1d492346730dd1fb8f6433a89f62da834941ed72',
+			'com.android.tools.build:manifest-merger:26.1.3:manifest-merger-26.1.3.jar:1e4fc7e932adb4607082409800e5e6fccb42e6c5360ae5990094bf522f3ada55',
+			'com.android.tools.ddms:ddmlib:26.1.3:ddmlib-26.1.3.jar:c54931cd68df5d1ea2923b3b320eae47cd2307a5a916bb8674c0acf93cd1d3cd',
+			'com.android.tools.external.com-intellij:intellij-core:26.1.3:intellij-core-26.1.3.jar:af67f5535fef2e1a28b1007a4acb8c5deb6a1e33b8afe7b11d012c9e778ebcec',
+			'com.android.tools.external.com-intellij:kotlin-compiler:26.1.3:kotlin-compiler-26.1.3.jar:c746d2859dc11cc05c84b692b3498d3a621e0929511f8440ee009c6557838fd4',
+			'com.android.tools.external.org-jetbrains:uast:26.1.3:uast-26.1.3.jar:3f3f6651d0c7685a77ecb22e9c82d6b49fdf24322c17360768dc530678f43265',
+			'com.android.tools.layoutlib:layoutlib-api:26.1.3:layoutlib-api-26.1.3.jar:10bc73ce706c45629872d6a999dbe12116df64e24f47ff93b7b13121ff57b4b0',
+			'com.android.tools.lint:lint-api:26.1.3:lint-api-26.1.3.jar:6f97323f9af8deda86278717885b5c927f3766757db89709f52d11d42b6fb751',
+			'com.android.tools.lint:lint-checks:26.1.3:lint-checks-26.1.3.jar:73c3d53784c9ce3e6d5968506581918e0179645d20809927ca4a001dd766b001',
+			'com.android.tools.lint:lint-gradle-api:26.1.3:lint-gradle-api-26.1.3.jar:7ca3c4866ec21dc21d53a9d86f752b77ace6f6c610a0c9dc877313856c733d9d',
+			'com.android.tools.lint:lint-gradle:26.1.3:lint-gradle-26.1.3.jar:db0c354b8f4b6f6637e31f91c564785a59ff896325331fcbc3de7458e0b6c067',
+			'com.android.tools.lint:lint-kotlin:26.1.3:lint-kotlin-26.1.3.jar:94e2b0f4565a241561cfb8fc1222bb3f132a3b98d2a90421dbb72ee8358e7d68',
+			'com.android.tools.lint:lint:26.1.3:lint-26.1.3.jar:8d5f32c989c6d191d712e90ad3ca2d1c409313599551d04d834caa44d26c78df',
+			'com.android.tools:annotations:26.1.3:annotations-26.1.3.jar:c950430b24ac5d58fc97e7283b8f0115f99587e76e08b4e1e2aaa780f2d77323',
+			'com.android.tools:common:26.1.3:common-26.1.3.jar:7c31a90581a148ab219f615a59667f0dded7fa39b248529784474da3c2274ef2',
+			'com.android.tools:dvlib:26.1.3:dvlib-26.1.3.jar:0cae87906f53d3f1088366a916ed180a7312b6d9919b90797f238875c8492855',
+			'com.android.tools:repository:26.1.3:repository-26.1.3.jar:52d4539cc68db91b261e2a33b2c8206b26e05539078758dc28cfb3854adb4f59',
+			'com.android.tools:sdk-common:26.1.3:sdk-common-26.1.3.jar:1948603ca9ff22c7ebb3178000bffa3a9dd2ca1cc5cb0c793cae08468b8fcfc1',
+			'com.android.tools:sdklib:26.1.3:sdklib-26.1.3.jar:4adcfaad9514607098d2c51503c39811112d3050f4d1e744c01c7f08f591032b',
 			'com.github.bumptech.glide:glide:3.8.0:glide-3.8.0.jar:750d9e7b940dc0ee48f8680623b55d46e14e8727acc922d7b156e57e7c549655',
 			'com.google.android.apps.common.testing.accessibility.framework:accessibility-test-framework:2.1:accessibility-test-framework-2.1.jar:7b0aa6ed7553597ce0610684a9f7eca8021eee218f2e2f427c04a7fbf5f920bd',
 			'com.google.code.findbugs:jsr305:1.3.9:jsr305-1.3.9.jar:905721a0eea90a81534abb7ee6ef4ea2e5e645fa1def0a5cd88402df1b46c9ed',
@@ -238,8 +238,8 @@ android {
 	defaultConfig {
 		minSdkVersion 14
 		targetSdkVersion 26
-		versionCode 10008
-		versionName "1.0.8"
+		versionCode 10011
+		versionName "1.0.11"
 		applicationId "org.briarproject.briar.android"
 		resValue "string", "app_package", "org.briarproject.briar.android"
 		resValue "string", "app_name", "Briar"
@@ -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'
@@ -288,14 +288,14 @@ android {
 
 task verifyTranslations {
 	doLast {
-		def file = "briar-android/src/main/res/values/arrays.xml"
+		def file = project.file("src/main/res/values/arrays.xml")
 		def arrays = new XmlParser().parse(file)
 		def lc = arrays.children().find { it.@name == "pref_language_values" }
 		def translations = []
 		lc.children().each { value -> translations.add(value.text()) }
 
 		def folders = ["default", "en-US"]
-		new File("briar-android/src/main/res").eachDir { dir ->
+		project.file("src/main/res").eachDir { dir ->
 			if (dir.name.startsWith("values-") && !dir.name.endsWith("night")) {
 				folders.add(dir.name.substring(7).replace("-r", "-"))
 			}
@@ -310,14 +310,14 @@ task verifyTranslations {
 					+ "\nhave no matching value folder")
 
 		// Some devices use iw instead of he for hebrew
-		def hebrew_legacy = new File("briar-android/src/main/res/values-iw")
-		def hebrew = new File("briar-android/src/main/res/values-he")
+		def hebrew_legacy = project.file("src/main/res/values-iw")
+		def hebrew = project.file("src/main/res/values-he")
 		// Copy values-he to values-iw
 		if (hebrew.exists()) {
 			hebrew_legacy.mkdir()
 			copy {
-				from 'src/main/res/values-he'
-				into 'src/main/res/values-iw'
+				from hebrew.getAbsolutePath()
+				into hebrew_legacy.getAbsolutePath()
 			}
 		}
 	}

briar-android/src/main/AndroidManifest.xml

@@ -14,6 +14,7 @@
 	<uses-permission android:name="android.permission.INTERNET" />
 	<uses-permission android:name="android.permission.VIBRATE" />
 	<uses-permission android:name="android.permission.WAKE_LOCK" />
+	<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
 	<uses-permission-sdk-23 android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS"/>
 
 	<application
@@ -24,6 +25,15 @@
 		android:logo="@mipmap/ic_launcher_round"
 		android:theme="@style/BriarTheme">
 
+		<receiver
+			android:name="org.briarproject.briar.android.login.SignInReminderReceiver"
+			android:exported="false">
+			<intent-filter>
+				<action android:name="android.intent.action.BOOT_COMPLETED"/>
+				<action android:name="android.intent.action.MY_PACKAGE_REPLACED"/>
+			</intent-filter>
+		</receiver>
+
 		<service
 			android:name="org.briarproject.briar.android.BriarService"
 			android:exported="false">
@@ -44,7 +54,6 @@
 			android:finishOnTaskLaunch="true"
 			android:label="@string/crash_report_title"
 			android:launchMode="singleInstance"
-			android:process=":briar_error_handler"
 			android:theme="@style/BriarTheme.NoActionBar"
 			android:windowSoftInputMode="stateHidden">
 		</activity>
@@ -61,7 +70,7 @@
 		</activity>
 
 		<activity
-			android:name="org.briarproject.briar.android.login.SetupActivity"
+			android:name="org.briarproject.briar.android.account.SetupActivity"
 			android:label="@string/setup_title"
 			android:windowSoftInputMode="adjustResize">
 		</activity>
@@ -301,7 +310,7 @@
 		</activity>
 
 		<activity
-			android:name="org.briarproject.briar.android.keyagreement.KeyAgreementActivity"
+			android:name="org.briarproject.briar.android.keyagreement.ContactExchangeActivity"
 			android:label="@string/add_contact_title"
 			android:theme="@style/BriarTheme.NoActionBar"
 			android:parentActivityName="org.briarproject.briar.android.navdrawer.NavDrawerActivity">

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

@@ -5,6 +5,7 @@ import android.content.SharedPreferences;
 import org.briarproject.bramble.BrambleAndroidModule;
 import org.briarproject.bramble.BrambleCoreEagerSingletons;
 import org.briarproject.bramble.BrambleCoreModule;
+import org.briarproject.bramble.api.account.AccountManager;
 import org.briarproject.bramble.api.contact.ContactExchangeTask;
 import org.briarproject.bramble.api.contact.ContactManager;
 import org.briarproject.bramble.api.crypto.CryptoComponent;
@@ -26,6 +27,7 @@ import org.briarproject.bramble.api.system.AndroidExecutor;
 import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.briar.BriarCoreEagerSingletons;
 import org.briarproject.briar.BriarCoreModule;
+import org.briarproject.briar.android.login.SignInReminderReceiver;
 import org.briarproject.briar.android.reporting.BriarReportSender;
 import org.briarproject.briar.api.android.AndroidNotificationManager;
 import org.briarproject.briar.api.android.DozeWatchdog;
@@ -76,6 +78,8 @@ public interface AndroidComponent
 
 	DatabaseConfig databaseConfig();
 
+	AccountManager accountManager();
+
 	@DatabaseExecutor
 	Executor databaseExecutor();
 
@@ -150,6 +154,8 @@ public interface AndroidComponent
 	@IoExecutor
 	Executor ioExecutor();
 
+	void inject(SignInReminderReceiver briarService);
+
 	void inject(BriarService briarService);
 
 	void inject(BriarReportSender briarReportSender);

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

@@ -21,8 +21,6 @@ class AndroidDatabaseConfig implements DatabaseConfig {
 
 	@Nullable
 	private volatile SecretKey key = null;
-	@Nullable
-	private volatile String nickname = null;
 
 	AndroidDatabaseConfig(File dbDir, File keyDir) {
 		this.dbDir = dbDir;
@@ -70,21 +68,6 @@ class AndroidDatabaseConfig implements DatabaseConfig {
 		this.key = key;
 	}
 
-	@Override
-	public void setLocalAuthorName(String nickname) {
-		LOG.info("Setting local author name");
-		this.nickname = nickname;
-	}
-
-	@Override
-	@Nullable
-	public String getLocalAuthorName() {
-		String nickname = this.nickname;
-		if (LOG.isLoggable(INFO))
-			LOG.info("Local author name has been set: " + (nickname != null));
-		return nickname;
-	}
-
 	@Override
 	@Nullable
 	public SecretKey getEncryptionKey() {

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

@@ -70,6 +70,7 @@ import static android.os.Build.VERSION.SDK_INT;
 import static android.support.v4.app.NotificationCompat.CATEGORY_MESSAGE;
 import static android.support.v4.app.NotificationCompat.CATEGORY_SOCIAL;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.briar.android.activity.BriarActivity.GROUP_ID;
 import static org.briarproject.briar.android.contact.ConversationActivity.CONTACT_ID;
 import static org.briarproject.briar.android.navdrawer.NavDrawerActivity.INTENT_BLOGS;
@@ -84,13 +85,6 @@ import static org.briarproject.briar.android.settings.SettingsFragment.SETTINGS_
 class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 		Service, EventListener {
 
-	// Notification IDs
-	private static final int PRIVATE_MESSAGE_NOTIFICATION_ID = 3;
-	private static final int GROUP_MESSAGE_NOTIFICATION_ID = 4;
-	private static final int FORUM_POST_NOTIFICATION_ID = 5;
-	private static final int BLOG_POST_NOTIFICATION_ID = 6;
-	private static final int INTRODUCTION_SUCCESS_NOTIFICATION_ID = 7;
-
 	private static final long SOUND_DELAY = TimeUnit.SECONDS.toMillis(2);
 
 	private static final Logger LOG =
@@ -265,8 +259,7 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 			try {
 				settings = settingsManager.getSettings(SETTINGS_NAMESPACE);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING))
-					LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}

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

@@ -5,6 +5,7 @@ import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.StrictMode;
 
+import org.briarproject.bramble.api.account.AccountManager;
 import org.briarproject.bramble.api.crypto.CryptoComponent;
 import org.briarproject.bramble.api.crypto.PublicKey;
 import org.briarproject.bramble.api.db.DatabaseConfig;
@@ -25,9 +26,11 @@ 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.android.account.AndroidAccountManagerImpl;
 import org.briarproject.briar.api.android.AndroidNotificationManager;
 import org.briarproject.briar.api.android.DozeWatchdog;
 import org.briarproject.briar.api.android.ReferenceManager;
@@ -93,20 +96,27 @@ public class AppModule {
 		return databaseConfig;
 	}
 
+	@Provides
+	@Singleton
+	AccountManager provideAccountManager(
+			AndroidAccountManagerImpl androidAccountManager) {
+		return androidAccountManager;
+	}
+
 	@Provides
 	PluginConfig providePluginConfig(@IoExecutor Executor ioExecutor,
 			@Scheduler ScheduledExecutorService scheduler,
 			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);
@@ -162,6 +172,7 @@ public class AppModule {
 
 	@Provides
 	SharedPreferences provideSharedPreferences(Application app) {
+		// FIXME unify this with getDefaultSharedPreferences()
 		return app.getSharedPreferences("db", MODE_PRIVATE);
 	}
 

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

@@ -1,5 +1,8 @@
 package org.briarproject.briar.android;
 
+import android.content.Context;
+import android.content.SharedPreferences;
+
 import java.util.Collection;
 import java.util.logging.LogRecord;
 
@@ -12,4 +15,8 @@ public interface BriarApplication {
 	Collection<LogRecord> getRecentLogRecords();
 
 	AndroidComponent getApplicationComponent();
+
+	Context getApplicationContext();
+
+	SharedPreferences getDefaultSharedPreferences();
 }

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

@@ -19,12 +19,14 @@ import org.briarproject.briar.android.logging.CachingLogHandler;
 import org.briarproject.briar.android.reporting.BriarReportPrimer;
 import org.briarproject.briar.android.reporting.BriarReportSenderFactory;
 import org.briarproject.briar.android.reporting.DevReportActivity;
+import org.briarproject.briar.android.util.UiUtils;
 
 import java.util.Collection;
 import java.util.logging.Handler;
 import java.util.logging.LogRecord;
 import java.util.logging.Logger;
 
+import static java.util.logging.Level.FINE;
 import static java.util.logging.Level.INFO;
 import static org.acra.ReportField.ANDROID_VERSION;
 import static org.acra.ReportField.APP_VERSION_CODE;
@@ -75,15 +77,17 @@ public class BriarApplicationImpl extends Application
 	private final CachingLogHandler logHandler = new CachingLogHandler();
 
 	private AndroidComponent applicationComponent;
+	private volatile SharedPreferences prefs;
 
 	@Override
 	protected void attachBaseContext(Context base) {
-		SharedPreferences prefs =
-				PreferenceManager.getDefaultSharedPreferences(base);
+		if (prefs == null)
+			prefs = PreferenceManager.getDefaultSharedPreferences(base);
 		// Loading the language needs to be done here.
 		Localizer.initialize(prefs);
 		super.attachBaseContext(
 				Localizer.getInstance().setLocale(base));
+		setTheme(base, prefs);
 		ACRA.init(this);
 	}
 
@@ -101,7 +105,7 @@ public class BriarApplicationImpl extends Application
 			}
 		}
 		rootLogger.addHandler(logHandler);
-		rootLogger.setLevel(INFO);
+		rootLogger.setLevel(IS_DEBUG_BUILD || IS_BETA_BUILD ? FINE : INFO);
 
 		LOG.info("Created");
 
@@ -122,6 +126,17 @@ public class BriarApplicationImpl extends Application
 		Localizer.getInstance().setLocale(this);
 	}
 
+	private void setTheme(Context ctx, SharedPreferences prefs) {
+		String theme = prefs.getString("pref_key_theme", null);
+		if (theme == null) {
+			// set default value
+			theme = getString(R.string.pref_theme_light_value);
+			prefs.edit().putString("pref_key_theme", theme).apply();
+		}
+		// set theme
+		UiUtils.setTheme(ctx, theme);
+	}
+
 	private void enableStrictMode() {
 		ThreadPolicy.Builder threadPolicy = new ThreadPolicy.Builder();
 		threadPolicy.detectAll();
@@ -142,4 +157,9 @@ public class BriarApplicationImpl extends Application
 	public AndroidComponent getApplicationComponent() {
 		return applicationComponent;
 	}
+
+	@Override
+	public SharedPreferences getDefaultSharedPreferences() {
+		return prefs;
+	}
 }

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

@@ -1,5 +1,7 @@
 package org.briarproject.briar.android;
 
+import android.app.ActivityManager;
+import android.app.ActivityManager.RunningAppProcessInfo;
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
@@ -15,7 +17,8 @@ import android.os.IBinder;
 import android.support.v4.app.NotificationCompat;
 import android.support.v4.content.ContextCompat;
 
-import org.briarproject.bramble.api.db.DatabaseConfig;
+import org.briarproject.bramble.api.account.AccountManager;
+import org.briarproject.bramble.api.account.AccountState;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager.StartResult;
 import org.briarproject.bramble.api.system.AndroidExecutor;
@@ -30,6 +33,7 @@ import java.util.logging.Logger;
 import javax.annotation.Nullable;
 import javax.inject.Inject;
 
+import static android.app.ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND;
 import static android.app.NotificationManager.IMPORTANCE_DEFAULT;
 import static android.app.NotificationManager.IMPORTANCE_NONE;
 import static android.app.PendingIntent.FLAG_UPDATE_CURRENT;
@@ -45,8 +49,15 @@ 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.api.account.AccountState.CREATING_ACCOUNT;
+import static org.briarproject.bramble.api.account.AccountState.SIGNED_IN;
 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;
+import static org.briarproject.briar.api.android.AndroidNotificationManager.FAILURE_NOTIFICATION_ID;
+import static org.briarproject.briar.api.android.AndroidNotificationManager.ONGOING_CHANNEL_ID;
+import static org.briarproject.briar.api.android.AndroidNotificationManager.ONGOING_NOTIFICATION_ID;
+import static org.briarproject.briar.api.android.AndroidNotificationManager.REMINDER_NOTIFICATION_ID;
 
 public class BriarService extends Service {
 
@@ -57,14 +68,6 @@ public class BriarService extends Service {
 	public static String EXTRA_STARTUP_FAILED =
 			"org.briarproject.briar.STARTUP_FAILED";
 
-	private static final int ONGOING_NOTIFICATION_ID = 1;
-	private static final int FAILURE_NOTIFICATION_ID = 2;
-
-	// Channels are sorted by channel ID in the Settings app, so use IDs
-	// that will sort below the main channels such as contacts
-	private static final String ONGOING_CHANNEL_ID = "zForegroundService";
-	private static final String FAILURE_CHANNEL_ID = "zStartupFailure";
-
 	private static final Logger LOG =
 			Logger.getLogger(BriarService.class.getName());
 
@@ -75,7 +78,7 @@ public class BriarService extends Service {
 	private BroadcastReceiver receiver = null;
 
 	@Inject
-	protected DatabaseConfig databaseConfig;
+	protected AccountManager accountManager;
 	// Fields that are accessed from background threads must be volatile
 	@Inject
 	protected volatile LifecycleManager lifecycleManager;
@@ -96,16 +99,17 @@ public class BriarService extends Service {
 			stopSelf();
 			return;
 		}
-		if (databaseConfig.getEncryptionKey() == null) {
+		AccountState accountState = accountManager.getAccountState();
+		if (accountState != SIGNED_IN && accountState != CREATING_ACCOUNT) {
 			LOG.info("No database key");
 			stopSelf();
 			return;
 		}
 
 		// Create notification channels
+		NotificationManager nm = (NotificationManager)
+				getSystemService(NOTIFICATION_SERVICE);
 		if (SDK_INT >= 26) {
-			NotificationManager nm = (NotificationManager)
-					getSystemService(NOTIFICATION_SERVICE);
 			NotificationChannel ongoingChannel = new NotificationChannel(
 					ONGOING_CHANNEL_ID,
 					getString(R.string.ongoing_notification_title),
@@ -137,9 +141,11 @@ public class BriarService extends Service {
 		}
 		b.setPriority(PRIORITY_MIN);
 		startForeground(ONGOING_NOTIFICATION_ID, b.build());
+		// Remove sign-in reminder notification
+		nm.cancel(REMINDER_NOTIFICATION_ID);
 		// Start the services in a background thread
 		new Thread(() -> {
-			String nickname = databaseConfig.getLocalAuthorName();
+			String nickname = accountManager.getCreatedLocalAuthorName();
 			StartResult result = lifecycleManager.startServices(nickname);
 			if (result == SUCCESS) {
 				started = true;
@@ -248,8 +254,10 @@ public class BriarService extends Service {
 				LOG.info("Trim memory: running low");
 			} else if (level == TRIM_MEMORY_RUNNING_CRITICAL) {
 				LOG.info("Trim memory: running critically low");
-				// Clear the UI to save some memory
-				hideUi();
+				// If we're not in the foreground, clear the UI to save memory
+				RunningAppProcessInfo info = new RunningAppProcessInfo();
+				ActivityManager.getMyMemoryState(info);
+				if (info.importance != IMPORTANCE_FOREGROUND) hideUi();
 			} else if (LOG.isLoggable(INFO)) {
 				LOG.info("Trim memory: unknown level " + level);
 			}

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

@@ -20,19 +20,33 @@ public class Localizer {
 	// Locking: class
 	@Nullable
 	private static Localizer INSTANCE;
-	@Nullable
+	private final Locale systemLocale;
 	private final Locale locale;
 
 	private Localizer(SharedPreferences sharedPreferences) {
-		locale = getLocaleFromTag(
-				sharedPreferences.getString(LANGUAGE, "default"));
+		this(Locale.getDefault(), getLocaleFromTag(
+				sharedPreferences.getString(LANGUAGE, "default")));
 	}
 
+	private Localizer(Locale systemLocale, @Nullable Locale userLocale) {
+		this.systemLocale = systemLocale;
+		if (userLocale == null) locale = systemLocale;
+		else locale = userLocale;
+	}
+
+	// Instantiate the Localizer.
 	public static synchronized void initialize(SharedPreferences prefs) {
 		if (INSTANCE == null)
 			INSTANCE = new Localizer(prefs);
 	}
 
+	// Reinstantiate the Localizer with the system locale
+	public static synchronized void reinitialize() {
+		if (INSTANCE != null)
+			INSTANCE = new Localizer(INSTANCE.systemLocale, null);
+	}
+
+	// Get the current instance.
 	public static synchronized Localizer getInstance() {
 		if (INSTANCE == null)
 			throw new IllegalStateException("Localizer not initialized");
@@ -54,9 +68,8 @@ public class Localizer {
 			return new Locale(tag);
 	}
 
+	// Returns the localized version of context
 	public Context setLocale(Context context) {
-		if (locale == null)
-			return context;
 		Resources res = context.getResources();
 		Configuration conf = res.getConfiguration();
 		Locale currentLocale;

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

@@ -4,11 +4,11 @@ import android.net.TrafficStats;
 import android.os.Process;
 
 import org.briarproject.bramble.api.lifecycle.Service;
-import org.briarproject.bramble.api.lifecycle.ServiceException;
 
 import java.util.logging.Logger;
 
 import static java.util.logging.Level.INFO;
+import static org.briarproject.bramble.util.LogUtils.now;
 
 class NetworkUsageLogger implements Service {
 
@@ -18,17 +18,17 @@ class NetworkUsageLogger implements Service {
 	private volatile long startTime, rxBytes, txBytes;
 
 	@Override
-	public void startService() throws ServiceException {
-		startTime = System.currentTimeMillis();
+	public void startService() {
+		startTime = now();
 		int uid = Process.myUid();
 		rxBytes = TrafficStats.getUidRxBytes(uid);
 		txBytes = TrafficStats.getUidTxBytes(uid);
 	}
 
 	@Override
-	public void stopService() throws ServiceException {
+	public void stopService() {
 		if (LOG.isLoggable(INFO)) {
-			long sessionDuration = System.currentTimeMillis() - startTime;
+			long sessionDuration = now() - startTime;
 			int uid = Process.myUid();
 			long rx = TrafficStats.getUidRxBytes(uid) - rxBytes;
 			long tx = TrafficStats.getUidTxBytes(uid) - txBytes;

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

@@ -48,6 +48,7 @@ import static android.content.pm.PackageManager.GET_PERMISSIONS;
 import static android.content.pm.PackageManager.GET_SIGNATURES;
 import static android.os.Build.VERSION.SDK_INT;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @NotNullByDefault
 class ScreenFilterMonitorImpl implements ScreenFilterMonitor, Service {
@@ -189,7 +190,7 @@ class ScreenFilterMonitorImpl implements ScreenFilterMonitor, Service {
 			String publicKey = StringUtils.toHexString(publicKeyBytes);
 			return PLAY_SERVICES_PUBLIC_KEY.equals(publicKey);
 		} catch (NameNotFoundException | CertificateException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			return false;
 		}
 	}

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

@@ -30,4 +30,14 @@ public interface TestingConstants {
 	long EXPIRY_DATE = IS_DEBUG_BUILD || IS_BETA_BUILD ?
 			BuildConfig.BuildTimestamp + 90 * 24 * 60 * 60 * 1000L :
 			Long.MAX_VALUE;
+
+	/**
+	 * Feature flag for enabling the dark UI theme in release builds.
+	 */
+	boolean FEATURE_FLAG_DARK_THEME = false;
+
+	/**
+	 * Feature flag for enabling the sign-in reminder in release builds.
+	 */
+	boolean FEATURE_FLAG_SIGN_IN_REMINDER = IS_DEBUG_BUILD;
 }

briar-android/src/main/java/org/briarproject/briar/android/account/AndroidAccountManagerImpl.java

@@ -1,12 +1,13 @@
-package org.briarproject.briar.android.controller;
+package org.briarproject.briar.android.account;
 
-import android.content.Context;
+import android.app.Application;
 import android.content.SharedPreferences;
-import android.support.v7.preference.PreferenceManager;
 
+import org.briarproject.bramble.account.AccountManagerImpl;
+import org.briarproject.bramble.api.crypto.CryptoComponent;
 import org.briarproject.bramble.api.db.DatabaseConfig;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
-import org.briarproject.bramble.util.AndroidUtils;
+import org.briarproject.briar.android.BriarApplication;
 
 import java.io.BufferedReader;
 import java.io.File;
@@ -20,26 +21,30 @@ import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.AndroidUtils.deleteAppData;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @NotNullByDefault
-public class ConfigControllerImpl implements ConfigController {
+public class AndroidAccountManagerImpl extends AccountManagerImpl {
 
-	private static final Logger LOG =
-			Logger.getLogger(ConfigControllerImpl.class.getName());
+	private final static Logger LOG =
+			Logger.getLogger(AndroidAccountManagerImpl.class.getSimpleName());
 
 	private static final String PREF_DB_KEY = "key";
 	private static final String DB_KEY_FILENAME = "db.key";
 	private static final String DB_KEY_BACKUP_FILENAME = "db.key.bak";
 
-	private final SharedPreferences briarPrefs;
+	private final BriarApplication app;
+	private final SharedPreferences dbPrefs;
 	private final File dbKeyFile, dbKeyBackupFile;
-	protected final DatabaseConfig databaseConfig;
 
 	@Inject
-	public ConfigControllerImpl(SharedPreferences briarPrefs,
-			DatabaseConfig databaseConfig) {
-		this.briarPrefs = briarPrefs;
-		this.databaseConfig = databaseConfig;
+	public AndroidAccountManagerImpl(CryptoComponent crypto,
+			DatabaseConfig databaseConfig, Application app,
+			SharedPreferences dbPrefs) {
+		super(crypto, databaseConfig);
+		this.app = (BriarApplication) app;
+		this.dbPrefs = dbPrefs;
 		File keyDir = databaseConfig.getDatabaseKeyDirectory();
 		dbKeyFile = new File(keyDir, DB_KEY_FILENAME);
 		dbKeyBackupFile = new File(keyDir, DB_KEY_BACKUP_FILENAME);
@@ -47,7 +52,7 @@ public class ConfigControllerImpl implements ConfigController {
 
 	@Override
 	@Nullable
-	public String getEncryptedDatabaseKey() {
+	protected String getEncryptedDatabaseKey() {
 		String key = getDatabaseKeyFromPreferences();
 		if (key == null) key = getDatabaseKeyFromFile();
 		else migrateDatabaseKeyToFile(key);
@@ -56,7 +61,7 @@ public class ConfigControllerImpl implements ConfigController {
 
 	@Nullable
 	private String getDatabaseKeyFromPreferences() {
-		String key = briarPrefs.getString(PREF_DB_KEY, null);
+		String key = dbPrefs.getString(PREF_DB_KEY, null);
 		if (key == null) LOG.info("No database key in preferences");
 		else LOG.info("Found database key in preferences");
 		return key;
@@ -89,14 +94,14 @@ public class ConfigControllerImpl implements ConfigController {
 			reader.close();
 			return key;
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			return null;
 		}
 	}
 
 	private void migrateDatabaseKeyToFile(String key) {
 		if (storeEncryptedDatabaseKey(key)) {
-			if (briarPrefs.edit().remove(PREF_DB_KEY).commit())
+			if (dbPrefs.edit().remove(PREF_DB_KEY).commit())
 				LOG.info("Database key migrated to file");
 			else LOG.warning("Database key not removed from preferences");
 		} else {
@@ -105,7 +110,7 @@ public class ConfigControllerImpl implements ConfigController {
 	}
 
 	@Override
-	public boolean storeEncryptedDatabaseKey(String hex) {
+	protected boolean storeEncryptedDatabaseKey(String hex) {
 		LOG.info("Storing database key in file");
 		// Create the directory if necessary
 		if (databaseConfig.getDatabaseKeyDirectory().mkdirs())
@@ -137,7 +142,7 @@ public class ConfigControllerImpl implements ConfigController {
 			LOG.info("Stored second copy of database key in backup file");
 			return true;
 		} catch (IOException e) {
-			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			logException(LOG, WARNING, e);
 			return false;
 		}
 	}
@@ -150,21 +155,10 @@ public class ConfigControllerImpl implements ConfigController {
 	}
 
 	@Override
-	public void deleteAccount(Context ctx) {
+	public void deleteAccount() {
 		LOG.info("Deleting account");
-		SharedPreferences defaultPrefs =
-				PreferenceManager.getDefaultSharedPreferences(ctx);
-		AndroidUtils.deleteAppData(ctx, briarPrefs, defaultPrefs);
+		SharedPreferences defaultPrefs = app.getDefaultSharedPreferences();
+		deleteAppData(app.getApplicationContext(), dbPrefs, defaultPrefs);
 	}
 
-	@Override
-	public boolean accountExists() {
-		String hex = getEncryptedDatabaseKey();
-		return hex != null && databaseConfig.databaseExists();
-	}
-
-	@Override
-	public boolean accountSignedIn() {
-		return databaseConfig.getEncryptionKey() != null;
-	}
 }

briar-android/src/main/java/org/briarproject/briar/android/account/AuthorNameFragment.java

@@ -1,4 +1,4 @@
-package org.briarproject.briar.android.login;
+package org.briarproject.briar.android.account;
 
 import android.os.Bundle;
 import android.support.design.widget.TextInputEditText;

briar-android/src/main/java/org/briarproject/briar/android/account/DozeFragment.java

@@ -1,4 +1,4 @@
-package org.briarproject.briar.android.login;
+package org.briarproject.briar.android.account;
 
 import android.annotation.SuppressLint;
 import android.content.Intent;
@@ -13,8 +13,8 @@ import android.widget.ProgressBar;
 import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
 import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
 import org.briarproject.briar.R;
+import org.briarproject.briar.android.account.PowerView.OnCheckedChangedListener;
 import org.briarproject.briar.android.activity.ActivityComponent;
-import org.briarproject.briar.android.login.PowerView.OnCheckedChangedListener;
 import org.briarproject.briar.android.util.UiUtils;
 
 import static android.view.View.INVISIBLE;

briar-android/src/main/java/org/briarproject/briar/android/account/DozeView.java

@@ -1,4 +1,4 @@
-package org.briarproject.briar.android.login;
+package org.briarproject.briar.android.account;
 
 
 import android.content.Context;

briar-android/src/main/java/org/briarproject/briar/android/account/HuaweiView.java

@@ -1,4 +1,4 @@
-package org.briarproject.briar.android.login;
+package org.briarproject.briar.android.account;
 
 
 import android.content.Context;
@@ -16,6 +16,8 @@ import java.util.List;
 
 import javax.annotation.Nullable;
 
+import static android.os.Build.VERSION.SDK_INT;
+
 @UiThread
 @NotNullByDefault
 class HuaweiView extends PowerView {
@@ -45,6 +47,8 @@ class HuaweiView extends PowerView {
 	}
 
 	public static boolean needsToBeShown(Context context) {
+		// "Protected apps" no longer exists on Huawei EMUI 5.0 (Android 7.0)
+		if (SDK_INT >= 24) return false;
 		PackageManager pm = context.getPackageManager();
 		List<ResolveInfo> resolveInfos = pm.queryIntentActivities(getIntent(),
 				PackageManager.MATCH_DEFAULT_ONLY);

briar-android/src/main/java/org/briarproject/briar/android/account/PasswordFragment.java

@@ -1,4 +1,4 @@
-package org.briarproject.briar.android.login;
+package org.briarproject.briar.android.account;
 
 import android.os.Bundle;
 import android.os.IBinder;
@@ -15,6 +15,7 @@ import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
 import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
 import org.briarproject.briar.R;
 import org.briarproject.briar.android.activity.ActivityComponent;
+import org.briarproject.briar.android.login.StrengthMeter;
 import org.briarproject.briar.android.util.UiUtils;
 
 import javax.annotation.Nullable;

briar-android/src/main/java/org/briarproject/briar/android/account/PowerView.java

@@ -1,4 +1,4 @@
-package org.briarproject.briar.android.login;
+package org.briarproject.briar.android.account;
 
 import android.content.Context;
 import android.os.Parcel;

briar-android/src/main/java/org/briarproject/briar/android/account/SetupActivity.java

@@ -1,4 +1,4 @@
-package org.briarproject.briar.android.login;
+package org.briarproject.briar.android.account;
 
 import android.annotation.TargetApi;
 import android.content.Intent;
@@ -10,11 +10,13 @@ import org.briarproject.briar.R;
 import org.briarproject.briar.android.activity.ActivityComponent;
 import org.briarproject.briar.android.activity.BaseActivity;
 import org.briarproject.briar.android.fragment.BaseFragment.BaseFragmentListener;
+import org.briarproject.briar.android.login.OpenDatabaseActivity;
 
 import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
+import static android.content.Intent.FLAG_ACTIVITY_TASK_ON_HOME;
 
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
@@ -94,7 +96,7 @@ public class SetupActivity extends BaseActivity
 
 	void showApp() {
 		Intent i = new Intent(this, OpenDatabaseActivity.class);
-		i.setFlags(FLAG_ACTIVITY_NEW_TASK);
+		i.setFlags(FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_TASK_ON_HOME);
 		startActivity(i);
 		supportFinishAfterTransition();
 		overridePendingTransition(R.anim.screen_new_in, R.anim.screen_old_out);

briar-android/src/main/java/org/briarproject/briar/android/account/SetupController.java

@@ -1,6 +1,7 @@
-package org.briarproject.briar.android.login;
+package org.briarproject.briar.android.account;
 
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.briar.android.login.PasswordController;
 
 @NotNullByDefault
 public interface SetupController extends PasswordController {

briar-android/src/main/java/org/briarproject/briar/android/account/SetupControllerImpl.java

@@ -1,16 +1,15 @@
-package org.briarproject.briar.android.login;
+package org.briarproject.briar.android.account;
 
-import android.content.SharedPreferences;
 import android.support.annotation.Nullable;
 
+import org.briarproject.bramble.api.account.AccountManager;
 import org.briarproject.bramble.api.crypto.CryptoComponent;
 import org.briarproject.bramble.api.crypto.CryptoExecutor;
 import org.briarproject.bramble.api.crypto.PasswordStrengthEstimator;
-import org.briarproject.bramble.api.crypto.SecretKey;
-import org.briarproject.bramble.api.db.DatabaseConfig;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.briar.android.controller.handler.ResultHandler;
 import org.briarproject.briar.android.controller.handler.UiResultHandler;
+import org.briarproject.briar.android.login.PasswordControllerImpl;
 
 import java.util.concurrent.Executor;
 import java.util.logging.Logger;
@@ -28,11 +27,10 @@ public class SetupControllerImpl extends PasswordControllerImpl
 	private volatile SetupActivity setupActivity;
 
 	@Inject
-	SetupControllerImpl(SharedPreferences briarPrefs,
-			DatabaseConfig databaseConfig,
+	SetupControllerImpl(AccountManager accountManager,
 			@CryptoExecutor Executor cryptoExecutor, CryptoComponent crypto,
 			PasswordStrengthEstimator strengthEstimator) {
-		super(briarPrefs, databaseConfig, cryptoExecutor, crypto,
+		super(accountManager, cryptoExecutor, crypto,
 				strengthEstimator);
 	}
 
@@ -102,11 +100,7 @@ public class SetupControllerImpl extends PasswordControllerImpl
 		if (password == null) throw new IllegalStateException();
 		cryptoExecutor.execute(() -> {
 			LOG.info("Creating account");
-			databaseConfig.setLocalAuthorName(authorName);
-			SecretKey key = crypto.generateSecretKey();
-			databaseConfig.setEncryptionKey(key);
-			String hex = encryptDatabaseKey(key, password);
-			storeEncryptedDatabaseKey(hex);
+			accountManager.createAccount(authorName, password);
 			resultHandler.onResult(null);
 		});
 	}

briar-android/src/main/java/org/briarproject/briar/android/account/SetupFragment.java

@@ -1,4 +1,4 @@
-package org.briarproject.briar.android.login;
+package org.briarproject.briar.android.account;
 
 import android.text.Editable;
 import android.text.TextWatcher;
@@ -17,7 +17,7 @@ import javax.inject.Inject;
 
 import static org.briarproject.briar.android.util.UiUtils.showOnboardingDialog;
 
-abstract class SetupFragment extends BaseFragment implements TextWatcher,
+public abstract class SetupFragment extends BaseFragment implements TextWatcher,
 		OnEditorActionListener, OnClickListener {
 
 	@Inject

briar-android/src/main/java/org/briarproject/briar/android/activity/ActivityComponent.java

@@ -26,16 +26,17 @@ import org.briarproject.briar.android.fragment.ScreenFilterDialogFragment;
 import org.briarproject.briar.android.introduction.ContactChooserFragment;
 import org.briarproject.briar.android.introduction.IntroductionActivity;
 import org.briarproject.briar.android.introduction.IntroductionMessageFragment;
+import org.briarproject.briar.android.keyagreement.ContactExchangeActivity;
 import org.briarproject.briar.android.keyagreement.IntroFragment;
 import org.briarproject.briar.android.keyagreement.KeyAgreementActivity;
-import org.briarproject.briar.android.keyagreement.ShowQrCodeFragment;
-import org.briarproject.briar.android.login.AuthorNameFragment;
+import org.briarproject.briar.android.keyagreement.KeyAgreementFragment;
+import org.briarproject.briar.android.account.AuthorNameFragment;
 import org.briarproject.briar.android.login.ChangePasswordActivity;
-import org.briarproject.briar.android.login.DozeFragment;
+import org.briarproject.briar.android.account.DozeFragment;
 import org.briarproject.briar.android.login.OpenDatabaseActivity;
 import org.briarproject.briar.android.login.PasswordActivity;
-import org.briarproject.briar.android.login.PasswordFragment;
-import org.briarproject.briar.android.login.SetupActivity;
+import org.briarproject.briar.android.account.PasswordFragment;
+import org.briarproject.briar.android.account.SetupActivity;
 import org.briarproject.briar.android.navdrawer.NavDrawerActivity;
 import org.briarproject.briar.android.panic.PanicPreferencesActivity;
 import org.briarproject.briar.android.panic.PanicResponderActivity;
@@ -100,6 +101,8 @@ public interface ActivityComponent {
 
 	void inject(PanicPreferencesActivity activity);
 
+	void inject(ContactExchangeActivity activity);
+
 	void inject(KeyAgreementActivity activity);
 
 	void inject(ConversationActivity activity);
@@ -185,7 +188,7 @@ public interface ActivityComponent {
 
 	void inject(IntroFragment fragment);
 
-	void inject(ShowQrCodeFragment fragment);
+	void inject(KeyAgreementFragment fragment);
 
 	void inject(ContactChooserFragment fragment);
 

briar-android/src/main/java/org/briarproject/briar/android/activity/ActivityModule.java

@@ -4,14 +4,12 @@ import android.app.Activity;
 
 import org.briarproject.briar.android.controller.BriarController;
 import org.briarproject.briar.android.controller.BriarControllerImpl;
-import org.briarproject.briar.android.controller.ConfigController;
-import org.briarproject.briar.android.controller.ConfigControllerImpl;
 import org.briarproject.briar.android.controller.DbController;
 import org.briarproject.briar.android.controller.DbControllerImpl;
 import org.briarproject.briar.android.login.PasswordController;
 import org.briarproject.briar.android.login.PasswordControllerImpl;
-import org.briarproject.briar.android.login.SetupController;
-import org.briarproject.briar.android.login.SetupControllerImpl;
+import org.briarproject.briar.android.account.SetupController;
+import org.briarproject.briar.android.account.SetupControllerImpl;
 import org.briarproject.briar.android.navdrawer.NavDrawerController;
 import org.briarproject.briar.android.navdrawer.NavDrawerControllerImpl;
 
@@ -48,13 +46,6 @@ public class ActivityModule {
 		return setupController;
 	}
 
-	@ActivityScope
-	@Provides
-	ConfigController provideConfigController(
-			ConfigControllerImpl configController) {
-		return configController;
-	}
-
 	@ActivityScope
 	@Provides
 	PasswordController providePasswordController(

briar-android/src/main/java/org/briarproject/briar/android/activity/BriarActivity.java

@@ -61,7 +61,7 @@ public abstract class BriarActivity extends BaseActivity {
 	@Override
 	public void onStart() {
 		super.onStart();
-		if (!briarController.hasEncryptionKey() && !isFinishing()) {
+		if (!briarController.signedIn() && !isFinishing()) {
 			Intent i = new Intent(this, PasswordActivity.class);
 			startActivityForResult(i, REQUEST_PASSWORD);
 		} else if (SDK_INT >= 23) {
@@ -92,7 +92,6 @@ public abstract class BriarActivity extends BaseActivity {
 		window.setEnterTransition(slide);
 		window.setTransitionBackgroundFadeDuration(getResources()
 				.getInteger(android.R.integer.config_longAnimTime));
-		window.setBackgroundDrawableResource(android.R.color.transparent);
 	}
 
 	/**
@@ -139,7 +138,7 @@ public abstract class BriarActivity extends BaseActivity {
 	}
 
 	protected void signOut(boolean removeFromRecentApps) {
-		if (briarController.hasEncryptionKey()) {
+		if (briarController.signedIn()) {
 			// Don't use UiResultHandler because we want the result even if
 			// this activity has been destroyed
 			briarController.signOut(result -> runOnUiThread(

briar-android/src/main/java/org/briarproject/briar/android/blog/BaseControllerImpl.java

@@ -32,8 +32,10 @@ import java.util.logging.Logger;
 
 import javax.annotation.Nullable;
 
-import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logDuration;
+import static org.briarproject.bramble.util.LogUtils.logException;
+import static org.briarproject.bramble.util.LogUtils.now;
 import static org.briarproject.briar.util.HtmlUtils.ARTICLE;
 
 @MethodsNotNullByDefault
@@ -101,30 +103,25 @@ abstract class BaseControllerImpl extends DbControllerImpl
 				Collection<BlogPostItem> items = loadItems(groupId);
 				handler.onResult(items);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING))
-					LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				handler.onException(e);
 			}
 		});
 	}
 
 	Collection<BlogPostItem> loadItems(GroupId groupId) throws DbException {
-		long now = System.currentTimeMillis();
+		long start = now();
 		Collection<BlogPostHeader> headers =
 				blogManager.getPostHeaders(groupId);
-		long duration = System.currentTimeMillis() - now;
-		if (LOG.isLoggable(INFO))
-			LOG.info("Loading headers took " + duration + " ms");
+		logDuration(LOG, "Loading headers", start);
 		Collection<BlogPostItem> items = new ArrayList<>(headers.size());
-		now = System.currentTimeMillis();
+		start = now();
 		for (BlogPostHeader h : headers) {
 			headerCache.put(h.getId(), h);
 			BlogPostItem item = getItem(h);
 			items.add(item);
 		}
-		duration = System.currentTimeMillis() - now;
-		if (LOG.isLoggable(INFO))
-			LOG.info("Loading bodies took " + duration + " ms");
+		logDuration(LOG, "Loading bodies", start);
 		return items;
 	}
 
@@ -140,15 +137,12 @@ abstract class BaseControllerImpl extends DbControllerImpl
 		}
 		runOnDbThread(() -> {
 			try {
-				long now = System.currentTimeMillis();
+				long start = now();
 				BlogPostItem item = getItem(header);
-				long duration = System.currentTimeMillis() - now;
-				if (LOG.isLoggable(INFO))
-					LOG.info("Loading body took " + duration + " ms");
+				logDuration(LOG, "Loading body", start);
 				handler.onResult(item);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING))
-					LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				handler.onException(e);
 			}
 		});
@@ -166,16 +160,13 @@ abstract class BaseControllerImpl extends DbControllerImpl
 		}
 		runOnDbThread(() -> {
 			try {
-				long now = System.currentTimeMillis();
+				long start = now();
 				BlogPostHeader header1 = getPostHeader(g, m);
 				BlogPostItem item = getItem(header1);
-				long duration = System.currentTimeMillis() - now;
-				if (LOG.isLoggable(INFO))
-					LOG.info("Loading post took " + duration + " ms");
+				logDuration(LOG, "Loading post", start);
 				handler.onResult(item);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING))
-					LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				handler.onException(e);
 			}
 		});
@@ -191,8 +182,7 @@ abstract class BaseControllerImpl extends DbControllerImpl
 				BlogPostHeader h = item.getHeader();
 				blogManager.addLocalComment(a, b.getId(), comment, h);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING))
-					LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				handler.onException(e);
 			}
 		});

briar-android/src/main/java/org/briarproject/briar/android/blog/BlogControllerImpl.java

@@ -35,8 +35,10 @@ import java.util.logging.Logger;
 
 import javax.inject.Inject;
 
-import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logDuration;
+import static org.briarproject.bramble.util.LogUtils.logException;
+import static org.briarproject.bramble.util.LogUtils.now;
 
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
@@ -154,19 +156,16 @@ class BlogControllerImpl extends BaseControllerImpl
 		if (groupId == null) throw new IllegalStateException();
 		runOnDbThread(() -> {
 			try {
-				long now = System.currentTimeMillis();
+				long start = now();
 				LocalAuthor a = identityManager.getLocalAuthor();
 				Blog b = blogManager.getBlog(groupId);
 				boolean ours = a.getId().equals(b.getAuthor().getId());
 				boolean removable = blogManager.canBeRemoved(b);
 				BlogItem blog = new BlogItem(b, ours, removable);
-				long duration = System.currentTimeMillis() - now;
-				if (LOG.isLoggable(INFO))
-					LOG.info("Loading blog took " + duration + " ms");
+				logDuration(LOG, "Loading blog", start);
 				handler.onResult(blog);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING))
-					LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				handler.onException(e);
 			}
 		});
@@ -177,16 +176,13 @@ class BlogControllerImpl extends BaseControllerImpl
 		if (groupId == null) throw new IllegalStateException();
 		runOnDbThread(() -> {
 			try {
-				long now = System.currentTimeMillis();
+				long start = now();
 				Blog b = blogManager.getBlog(groupId);
 				blogManager.removeBlog(b);
-				long duration = System.currentTimeMillis() - now;
-				if (LOG.isLoggable(INFO))
-					LOG.info("Removing blog took " + duration + " ms");
+				logDuration(LOG, "Removing blog", start);
 				handler.onResult(null);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING))
-					LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				handler.onException(e);
 			}
 		});
@@ -205,8 +201,7 @@ class BlogControllerImpl extends BaseControllerImpl
 				for (Contact c : contacts) contactIds.add(c.getId());
 				handler.onResult(contactIds);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING))
-					LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				handler.onException(e);
 			}
 		});

briar-android/src/main/java/org/briarproject/briar/android/blog/BlogPostViewHolder.java

@@ -11,7 +11,7 @@ import android.text.Spanned;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.ImageView;
+import android.widget.ImageButton;
 import android.widget.TextView;
 
 import org.briarproject.bramble.api.identity.Author;
@@ -40,7 +40,7 @@ class BlogPostViewHolder extends RecyclerView.ViewHolder {
 	private final ViewGroup layout;
 	private final AuthorView reblogger;
 	private final AuthorView author;
-	private final ImageView reblogButton;
+	private final ImageButton reblogButton;
 	private final TextView body;
 	private final ViewGroup commentContainer;
 	private final boolean fullText;

briar-android/src/main/java/org/briarproject/briar/android/blog/FeedControllerImpl.java

@@ -26,8 +26,10 @@ import java.util.logging.Logger;
 
 import javax.inject.Inject;
 
-import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logDuration;
+import static org.briarproject.bramble.util.LogUtils.logException;
+import static org.briarproject.bramble.util.LogUtils.now;
 import static org.briarproject.briar.api.blog.BlogManager.CLIENT_ID;
 
 @MethodsNotNullByDefault
@@ -99,22 +101,19 @@ class FeedControllerImpl extends BaseControllerImpl
 			ResultExceptionHandler<Collection<BlogPostItem>, DbException> handler) {
 		runOnDbThread(() -> {
 			try {
-				long now = System.currentTimeMillis();
+				long start = now();
 				Collection<BlogPostItem> posts = new ArrayList<>();
 				for (Blog b : blogManager.getBlogs()) {
 					try {
 						posts.addAll(loadItems(b.getId()));
 					} catch (NoSuchGroupException | NoSuchMessageException e) {
-						if (LOG.isLoggable(WARNING))
-							LOG.log(WARNING, e.toString(), e);
+						logException(LOG, WARNING, e);
 					}
 				}
-				long duration = System.currentTimeMillis() - now;
-				if (LOG.isLoggable(INFO))
-					LOG.info("Loading all posts took " + duration + " ms");
+				logDuration(LOG, "Loading all posts", start);
 				handler.onResult(posts);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				handler.onException(e);
 			}
 		});
@@ -125,15 +124,13 @@ class FeedControllerImpl extends BaseControllerImpl
 			ResultExceptionHandler<Blog, DbException> handler) {
 		runOnDbThread(() -> {
 			try {
-				long now = System.currentTimeMillis();
+				long start = now();
 				Author a = identityManager.getLocalAuthor();
 				Blog b = blogManager.getPersonalBlog(a);
-				long duration = System.currentTimeMillis() - now;
-				if (LOG.isLoggable(INFO))
-					LOG.info("Loading blog took " + duration + " ms");
+				logDuration(LOG, "Loading personal blog", start);
 				handler.onResult(b);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				handler.onException(e);
 			}
 		});

briar-android/src/main/java/org/briarproject/briar/android/blog/RssFeedImportActivity.java

@@ -30,6 +30,7 @@ import javax.inject.Inject;
 import static android.view.View.GONE;
 import static android.view.View.VISIBLE;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 public class RssFeedImportActivity extends BriarActivity {
 
@@ -124,7 +125,7 @@ public class RssFeedImportActivity extends BriarActivity {
 				feedManager.addFeed(url);
 				feedImported();
 			} catch (DbException | IOException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				importFailed();
 			}
 		});

briar-android/src/main/java/org/briarproject/briar/android/blog/RssFeedManageActivity.java

@@ -27,6 +27,7 @@ import javax.inject.Inject;
 import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TOP;
 import static android.support.design.widget.Snackbar.LENGTH_LONG;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 public class RssFeedManageActivity extends BriarActivity
 		implements RssFeedListener {
@@ -123,7 +124,7 @@ public class RssFeedManageActivity extends BriarActivity
 			try {
 				displayFeeds(revision, feedManager.getFeeds());
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				onLoadError();
 			}
 		});
@@ -148,7 +149,7 @@ public class RssFeedManageActivity extends BriarActivity
 				feedManager.removeFeed(feed);
 				onFeedDeleted(feed);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				onDeleteError();
 			}
 		});

briar-android/src/main/java/org/briarproject/briar/android/blog/WriteBlogPostActivity.java

@@ -34,6 +34,7 @@ import javax.inject.Inject;
 import static android.view.View.GONE;
 import static android.view.View.VISIBLE;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.briar.api.blog.BlogConstants.MAX_BLOG_POST_BODY_LENGTH;
 
 public class WriteBlogPostActivity extends BriarActivity
@@ -142,16 +143,16 @@ public class WriteBlogPostActivity extends BriarActivity
 
 	private void storePost(String body) {
 		runOnDbThread(() -> {
-			long now = System.currentTimeMillis();
+			long timestamp = System.currentTimeMillis();
 			try {
 				LocalAuthor author = identityManager.getLocalAuthor();
 				BlogPost p = blogPostFactory
-						.createBlogPost(groupId, now, null, author, body);
+						.createBlogPost(groupId, timestamp, null, author, body);
 				blogManager.addLocalPost(p);
 				postPublished();
 			} catch (DbException | GeneralSecurityException
 					| FormatException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				postFailedToPublish();
 			}
 		});

briar-android/src/main/java/org/briarproject/briar/android/contact/ContactListFragment.java

@@ -33,7 +33,7 @@ import org.briarproject.briar.R;
 import org.briarproject.briar.android.activity.ActivityComponent;
 import org.briarproject.briar.android.contact.BaseContactListAdapter.OnContactClickListener;
 import org.briarproject.briar.android.fragment.BaseFragment;
-import org.briarproject.briar.android.keyagreement.KeyAgreementActivity;
+import org.briarproject.briar.android.keyagreement.ContactExchangeActivity;
 import org.briarproject.briar.android.view.BriarRecyclerView;
 import org.briarproject.briar.api.android.AndroidNotificationManager;
 import org.briarproject.briar.api.client.BaseMessageHeader;
@@ -59,8 +59,10 @@ import javax.inject.Inject;
 
 import static android.support.v4.app.ActivityOptionsCompat.makeSceneTransitionAnimation;
 import static android.support.v4.view.ViewCompat.getTransitionName;
-import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logDuration;
+import static org.briarproject.bramble.util.LogUtils.logException;
+import static org.briarproject.bramble.util.LogUtils.now;
 import static org.briarproject.briar.android.contact.ConversationActivity.CONTACT_ID;
 
 @MethodsNotNullByDefault
@@ -163,7 +165,7 @@ public class ContactListFragment extends BaseFragment implements EventListener {
 		switch (item.getItemId()) {
 			case R.id.action_add_contact:
 				Intent intent =
-						new Intent(getContext(), KeyAgreementActivity.class);
+						new Intent(getContext(), ContactExchangeActivity.class);
 				startActivity(intent);
 				return true;
 			default:
@@ -194,7 +196,7 @@ public class ContactListFragment extends BaseFragment implements EventListener {
 		int revision = adapter.getRevision();
 		listener.runOnDbThread(() -> {
 			try {
-				long now = System.currentTimeMillis();
+				long start = now();
 				List<ContactListItem> contacts = new ArrayList<>();
 				for (Contact c : contactManager.getActiveContacts()) {
 					try {
@@ -208,12 +210,10 @@ public class ContactListFragment extends BaseFragment implements EventListener {
 						// Continue
 					}
 				}
-				long duration = System.currentTimeMillis() - now;
-				if (LOG.isLoggable(INFO))
-					LOG.info("Full load took " + duration + " ms");
+				logDuration(LOG, "Full load", start);
 				displayContacts(revision, contacts);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}

briar-android/src/main/java/org/briarproject/briar/android/contact/ConversationActivity.java

@@ -106,6 +106,9 @@ import static android.support.v7.util.SortedList.INVALID_POSITION;
 import static android.widget.Toast.LENGTH_SHORT;
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logDuration;
+import static org.briarproject.bramble.util.LogUtils.logException;
+import static org.briarproject.bramble.util.LogUtils.now;
 import static org.briarproject.briar.android.activity.RequestCodes.REQUEST_INTRODUCTION;
 import static org.briarproject.briar.android.settings.SettingsFragment.SETTINGS_NAMESPACE;
 import static org.briarproject.briar.android.util.UiUtils.getAvatarTransitionName;
@@ -290,21 +293,19 @@ public class ConversationActivity extends BriarActivity
 	private void loadContactDetailsAndMessages() {
 		runOnDbThread(() -> {
 			try {
-				long now = System.currentTimeMillis();
+				long start = now();
 				if (contactName == null || contactAuthorId == null) {
 					Contact contact = contactManager.getContact(contactId);
 					contactName = contact.getAuthor().getName();
 					contactAuthorId = contact.getAuthor().getId();
 				}
-				long duration = System.currentTimeMillis() - now;
-				if (LOG.isLoggable(INFO))
-					LOG.info("Loading contact took " + duration + " ms");
+				logDuration(LOG, "Loading contact", start);
 				loadMessages();
 				displayContactDetails();
 			} catch (NoSuchContactException e) {
 				finishOnUiThread();
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}
@@ -340,7 +341,7 @@ public class ConversationActivity extends BriarActivity
 		int revision = adapter.getRevision();
 		runOnDbThread(() -> {
 			try {
-				long now = System.currentTimeMillis();
+				long start = now();
 				Collection<PrivateMessageHeader> headers =
 						messagingManager.getMessageHeaders(contactId);
 				Collection<IntroductionMessage> introductions =
@@ -357,14 +358,12 @@ public class ConversationActivity extends BriarActivity
 				invitations.addAll(forumInvitations);
 				invitations.addAll(blogInvitations);
 				invitations.addAll(groupInvitations);
-				long duration = System.currentTimeMillis() - now;
-				if (LOG.isLoggable(INFO))
-					LOG.info("Loading messages took " + duration + " ms");
+				logDuration(LOG, "Loading messages", start);
 				displayMessages(revision, headers, introductions, invitations);
 			} catch (NoSuchContactException e) {
 				finishOnUiThread();
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}
@@ -438,14 +437,12 @@ public class ConversationActivity extends BriarActivity
 	private void loadMessageBody(MessageId m) {
 		runOnDbThread(() -> {
 			try {
-				long now = System.currentTimeMillis();
+				long start = now();
 				String body = messagingManager.getMessageBody(m);
-				long duration = System.currentTimeMillis() - now;
-				if (LOG.isLoggable(INFO))
-					LOG.info("Loading body took " + duration + " ms");
+				logDuration(LOG, "Loading body", start);
 				displayMessageBody(m, body);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}
@@ -669,7 +666,7 @@ public class ConversationActivity extends BriarActivity
 						messagingManager.getConversationId(contactId);
 				createMessage(body, timestamp);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 
 		});
@@ -689,11 +686,9 @@ public class ConversationActivity extends BriarActivity
 	private void storeMessage(PrivateMessage m, String body) {
 		runOnDbThread(() -> {
 			try {
-				long now = System.currentTimeMillis();
+				long start = now();
 				messagingManager.addLocalMessage(m);
-				long duration = System.currentTimeMillis() - now;
-				if (LOG.isLoggable(INFO))
-					LOG.info("Storing message took " + duration + " ms");
+				logDuration(LOG, "Storing message", start);
 				Message message = m.getMessage();
 				PrivateMessageHeader h = new PrivateMessageHeader(
 						message.getId(), message.getGroupId(),
@@ -703,7 +698,7 @@ public class ConversationActivity extends BriarActivity
 				bodyCache.put(message.getId(), body);
 				addConversationItem(item);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}
@@ -726,7 +721,7 @@ public class ConversationActivity extends BriarActivity
 			try {
 				contactManager.removeContact(contactId);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			} finally {
 				finishAfterContactRemoved();
 			}
@@ -755,7 +750,7 @@ public class ConversationActivity extends BriarActivity
 					}
 				}
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}
@@ -803,7 +798,7 @@ public class ConversationActivity extends BriarActivity
 				settings.putBoolean(SHOW_ONBOARDING_INTRODUCTION, false);
 				settingsManager.mergeSettings(settings, SETTINGS_NAMESPACE);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}
@@ -816,13 +811,11 @@ public class ConversationActivity extends BriarActivity
 	private void markMessageRead(GroupId g, MessageId m) {
 		runOnDbThread(() -> {
 			try {
-				long now = System.currentTimeMillis();
+				long start = now();
 				messagingManager.setReadFlag(g, m, true);
-				long duration = System.currentTimeMillis() - now;
-				if (LOG.isLoggable(INFO))
-					LOG.info("Marking read took " + duration + " ms");
+				logDuration(LOG, "Marking read", start);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}
@@ -860,10 +853,10 @@ public class ConversationActivity extends BriarActivity
 				loadMessages();
 			} catch (ProtocolStateException e) {
 				// Action is no longer valid - reloading should solve the issue
-				if (LOG.isLoggable(INFO)) LOG.log(INFO, e.toString(), e);
+				logException(LOG, INFO, e);
 			} catch (DbException e) {
 				// TODO show an error message
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}

briar-android/src/main/java/org/briarproject/briar/android/contactselection/ContactSelectorControllerImpl.java

@@ -19,6 +19,7 @@ import java.util.logging.Logger;
 import javax.annotation.concurrent.Immutable;
 
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.util.LogUtils.logException;
 
 @Immutable
 @NotNullByDefault
@@ -53,7 +54,7 @@ public abstract class ContactSelectorControllerImpl
 				}
 				handler.onResult(contacts);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 				handler.onException(e);
 			}
 		});

briar-android/src/main/java/org/briarproject/briar/android/controller/BriarController.java

@@ -6,7 +6,7 @@ public interface BriarController extends ActivityLifecycleController {
 
 	void startAndBindService();
 
-	boolean hasEncryptionKey();
+	boolean signedIn();
 
 	/**
 	 * Returns true via the handler when the app has dozed

briar-android/src/main/java/org/briarproject/briar/android/controller/BriarControllerImpl.java

@@ -5,7 +5,8 @@ import android.content.Intent;
 import android.os.IBinder;
 import android.support.annotation.CallSuper;
 
-import org.briarproject.bramble.api.db.DatabaseConfig;
+import org.briarproject.bramble.api.account.AccountManager;
+import org.briarproject.bramble.api.account.AccountState;
 import org.briarproject.bramble.api.db.DatabaseExecutor;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.settings.Settings;
@@ -21,6 +22,9 @@ import java.util.logging.Logger;
 import javax.inject.Inject;
 
 import static java.util.logging.Level.WARNING;
+import static org.briarproject.bramble.api.account.AccountState.CREATING_ACCOUNT;
+import static org.briarproject.bramble.api.account.AccountState.SIGNED_IN;
+import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.briar.android.settings.SettingsFragment.SETTINGS_NAMESPACE;
 import static org.briarproject.briar.android.util.UiUtils.needsDozeWhitelisting;
 
@@ -32,7 +36,7 @@ public class BriarControllerImpl implements BriarController {
 	public static final String DOZE_ASK_AGAIN = "dozeAskAgain";
 
 	private final BriarServiceConnection serviceConnection;
-	private final DatabaseConfig databaseConfig;
+	private final AccountManager accountManager;
 	@DatabaseExecutor
 	private final Executor databaseExecutor;
 	private final SettingsManager settingsManager;
@@ -43,12 +47,12 @@ public class BriarControllerImpl implements BriarController {
 
 	@Inject
 	BriarControllerImpl(BriarServiceConnection serviceConnection,
-			DatabaseConfig databaseConfig,
+			AccountManager accountManager,
 			@DatabaseExecutor Executor databaseExecutor,
 			SettingsManager settingsManager, DozeWatchdog dozeWatchdog,
 			Activity activity) {
 		this.serviceConnection = serviceConnection;
-		this.databaseConfig = databaseConfig;
+		this.accountManager = accountManager;
 		this.databaseExecutor = databaseExecutor;
 		this.settingsManager = settingsManager;
 		this.dozeWatchdog = dozeWatchdog;
@@ -58,7 +62,7 @@ public class BriarControllerImpl implements BriarController {
 	@Override
 	@CallSuper
 	public void onActivityCreate(Activity activity) {
-		if (databaseConfig.getEncryptionKey() != null) startAndBindService();
+		if (signedIn()) startAndBindService();
 	}
 
 	@Override
@@ -83,8 +87,9 @@ public class BriarControllerImpl implements BriarController {
 	}
 
 	@Override
-	public boolean hasEncryptionKey() {
-		return databaseConfig.getEncryptionKey() != null;
+	public boolean signedIn() {
+		AccountState state = accountManager.getAccountState();
+		return state == CREATING_ACCOUNT || state == SIGNED_IN;
 	}
 
 	@Override
@@ -101,8 +106,7 @@ public class BriarControllerImpl implements BriarController {
 				boolean ask = settings.getBoolean(DOZE_ASK_AGAIN, true);
 				handler.onResult(ask);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING))
-					LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}
@@ -115,8 +119,7 @@ public class BriarControllerImpl implements BriarController {
 				settings.putBoolean(DOZE_ASK_AGAIN, false);
 				settingsManager.mergeSettings(settings, SETTINGS_NAMESPACE);
 			} catch (DbException e) {
-				if (LOG.isLoggable(WARNING))
-					LOG.log(WARNING, e.toString(), e);
+				logException(LOG, WARNING, e);
 			}
 		});
 	}

briar-android/src/main/java/org/briarproject/briar/android/controller/ConfigController.java

@@ -1,23 +0,0 @@
-package org.briarproject.briar.android.controller;
-
-import android.content.Context;
-
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
-
-import javax.annotation.Nullable;
-
-@NotNullByDefault
-public interface ConfigController {
-
-	@Nullable
-	String getEncryptedDatabaseKey();
-
-	boolean storeEncryptedDatabaseKey(String hex);
-
-	void deleteAccount(Context ctx);
-
-	boolean accountExists();
-
-	boolean accountSignedIn();
-
-}