Add method to detect whether system uses glibc.

Don't add new thread items when the existing ones haven't loaded

Closes #1947

See merge request briar/briar!1375

.idea/dictionaries/briar.xml

@@ -0,0 +1,14 @@
+<component name="ProjectDictionaryState">
+  <dictionary name="briar">
+    <words>
+      <w>briar</w>
+      <w>briarproject</w>
+      <w>emoji</w>
+      <w>encrypter</w>
+      <w>identicon</w>
+      <w>introducee</w>
+      <w>introducer</w>
+      <w>onboarding</w>
+    </words>
+  </dictionary>
+</component>

bramble-android/build.gradle

@@ -11,8 +11,8 @@ android {
 	defaultConfig {
 		minSdkVersion 16
 		targetSdkVersion 29
-		versionCode 10214
+		versionCode 10216
-		versionName "1.2.14"
+		versionName "1.2.16"
 		consumerProguardFiles 'proguard-rules.txt'
 
 		testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -38,8 +38,8 @@ configurations {
 
 dependencies {
 	implementation project(path: ':bramble-core', configuration: 'default')
-	tor 'org.briarproject:tor-android:0.3.5.12@zip'
+	tor 'org.briarproject:tor-android:0.3.5.13@zip'
-	tor 'org.briarproject:obfs4proxy-android:0.0.11-2@zip'
+	tor 'org.briarproject:obfs4proxy-android:0.0.12-dev-40245c4a@zip'
 
 	annotationProcessor 'com.google.dagger:dagger-compiler:2.24'
 

bramble-android/src/main/java/org/briarproject/bramble/util/AndroidUtils.java

@@ -31,6 +31,7 @@ public class AndroidUtils {
 	private static final String FAKE_BLUETOOTH_ADDRESS = "02:00:00:00:00:00";
 
 	private static final String STORED_REPORTS = "dev-reports";
+	private static final String STORED_LOGCAT = "dev-logcat";
 
 	public static Collection<String> getSupportedArchitectures() {
 		List<String> abis = new ArrayList<>();
@@ -107,6 +108,10 @@ public class AndroidUtils {
 		return ctx.getDir(STORED_REPORTS, MODE_PRIVATE);
 	}
 
+	public static File getLogcatFile(Context ctx) {
+		return new File(ctx.getFilesDir(), STORED_LOGCAT);
+	}
+
 	/**
 	 * Returns an array of supported content types for image attachments.
 	 * GIFs can't be compressed on API < 24 so they're not supported.

bramble-android/witness.gradle

@@ -75,8 +75,8 @@ dependencyVerification {
         'org.beanshell:bsh:1.3.0:bsh-1.3.0.jar:9b04edc75d19db54f1b4e8b5355e9364384c6cf71eb0a1b9724c159d779879f8',
         'org.bouncycastle:bcpkix-jdk15on:1.56:bcpkix-jdk15on-1.56.jar:7043dee4e9e7175e93e0b36f45b1ec1ecb893c5f755667e8b916eb8dd201c6ca',
         'org.bouncycastle:bcprov-jdk15on:1.56:bcprov-jdk15on-1.56.jar:963e1ee14f808ffb99897d848ddcdb28fa91ddda867eb18d303e82728f878349',
-        'org.briarproject:obfs4proxy-android:0.0.11-2:obfs4proxy-android-0.0.11-2.zip:57e55cbe87aa2aac210fdbb6cd8cdeafe15f825406a08ebf77a8b787aa2c6a8a',
+        'org.briarproject:obfs4proxy-android:0.0.12-dev-40245c4a:obfs4proxy-android-0.0.12-dev-40245c4a.zip:8ab05a8f8391be2cb5ab2b665c281a06d9e3a756bd0f95a40a36ca927866ea82',
-        'org.briarproject:tor-android:0.3.5.12:tor-android-0.3.5.12.zip:db71fb3290acff79d572af0752570eaf6aad7c4d88c9b9aa0b4d5afe2b9ead9c',
+        'org.briarproject:tor-android:0.3.5.13:tor-android-0.3.5.13.zip:e0978db136731dae07774b722970cdae1e462fb5adc82845dd80a7e2d87f356c',
         'org.checkerframework:checker-compat-qual:2.5.3:checker-compat-qual-2.5.3.jar:d76b9afea61c7c082908023f0cbc1427fab9abd2df915c8b8a3e7a509bccbc6d',
         'org.checkerframework:checker-qual:2.5.2:checker-qual-2.5.2.jar:64b02691c8b9d4e7700f8ee2e742dce7ea2c6e81e662b7522c9ee3bf568c040a',
         'org.checkerframework:checker-qual:2.8.1:checker-qual-2.8.1.jar:9103499008bcecd4e948da29b17864abb64304e15706444ae209d17ebe0575df',

bramble-api/src/main/java/org/briarproject/bramble/api/client/ClientHelper.java

@@ -1,7 +1,6 @@
 package org.briarproject.bramble.api.client;
 
 import org.briarproject.bramble.api.FormatException;
-import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.crypto.PrivateKey;
 import org.briarproject.bramble.api.crypto.PublicKey;
 import org.briarproject.bramble.api.data.BdfDictionary;
@@ -120,17 +119,4 @@ public interface ClientHelper {
 	Map<TransportId, TransportProperties> parseAndValidateTransportPropertiesMap(
 			BdfDictionary properties) throws FormatException;
 
-	/**
-	 * Retrieves the contact ID from the group metadata of the given contact
-	 * group.
-	 */
-	ContactId getContactId(Transaction txn, GroupId contactGroupId)
-		throws DbException, FormatException;
-
-	/**
-	 * Stores the given contact ID in the group metadata of the given contact
-	 * group.
-	 */
-	void setContactId(Transaction txn, GroupId contactGroupId, ContactId c)
-		throws DbException;
 }

bramble-api/src/main/java/org/briarproject/bramble/api/client/ContactGroupConstants.java

@@ -1,9 +0,0 @@
-package org.briarproject.bramble.api.client;
-
-public interface ContactGroupConstants {
-
-	/**
-	 * Group metadata key for associating a contact ID with a contact group.
-	 */
-	String GROUP_KEY_CONTACT_ID = "contactId";
-}

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamDecrypterFactory.java

@@ -19,4 +19,10 @@ public interface StreamDecrypterFactory {
 	 */
 	StreamDecrypter createContactExchangeStreamDecrypter(InputStream in,
 			SecretKey headerKey);
+
+	/**
+	 * Creates a {@link StreamDecrypter} for decrypting a log stream.
+	 */
+	StreamDecrypter createLogStreamDecrypter(InputStream in,
+			SecretKey headerKey);
 }

bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamEncrypterFactory.java

@@ -17,6 +17,12 @@ public interface StreamEncrypterFactory {
 	 * Creates a {@link StreamEncrypter} for encrypting a contact exchange
 	 * stream.
 	 */
-	StreamEncrypter createContactExchangeStreamDecrypter(OutputStream out,
+	StreamEncrypter createContactExchangeStreamEncrypter(OutputStream out,
+			SecretKey headerKey);
+
+	/**
+	 * Creates a {@link StreamEncrypter} for encrypting a log stream.
+	 */
+	StreamEncrypter createLogStreamEncrypter(OutputStream out,
 			SecretKey headerKey);
 }

bramble-api/src/main/java/org/briarproject/bramble/api/reporting/DevConfig.java

@@ -13,4 +13,6 @@ public interface DevConfig {
 	String getDevOnionAddress();
 
 	File getReportDir();
+
+	File getLogcatFile();
 }

bramble-api/src/main/java/org/briarproject/bramble/api/transport/StreamReaderFactory.java

@@ -16,8 +16,13 @@ public interface StreamReaderFactory {
 
 	/**
 	 * Creates an {@link InputStream InputStream} for reading from a contact
-	 * exchangestream.
+	 * exchange stream.
 	 */
 	InputStream createContactExchangeStreamReader(InputStream in,
 			SecretKey headerKey);
+
+	/**
+	 * Creates an {@link InputStream} for reading from a log stream.
+	 */
+	InputStream createLogStreamReader(InputStream in, SecretKey headerKey);
 }

bramble-api/src/main/java/org/briarproject/bramble/api/transport/StreamWriterFactory.java

@@ -7,17 +7,19 @@ import java.io.OutputStream;
 
 @NotNullByDefault
 public interface StreamWriterFactory {
-
 	/**
-	 * Creates an {@link OutputStream OutputStream} for writing to a
+	 * Creates a {@link StreamWriter} for writing to a transport stream.
-	 * transport stream
 	 */
 	StreamWriter createStreamWriter(OutputStream out, StreamContext ctx);
 
 	/**
-	 * Creates an {@link OutputStream OutputStream} for writing to a contact
+	 * Creates a {@link StreamWriter} for writing to a contact exchange stream.
-	 * exchange stream.
 	 */
 	StreamWriter createContactExchangeStreamWriter(OutputStream out,
 			SecretKey headerKey);
+
+	/**
+	 * Creates a {@link StreamWriter} for writing to a log stream.
+	 */
+	StreamWriter createLogStreamWriter(OutputStream out, SecretKey headerKey);
 }

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

@@ -6,9 +6,7 @@ import org.briarproject.bramble.api.data.BdfList;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 
 import javax.annotation.Nullable;
-import javax.annotation.concurrent.Immutable;
 
-@Immutable
 @NotNullByDefault
 public class ValidationUtils {
 
@@ -66,9 +64,4 @@ public class ValidationUtils {
 		if (dictionary != null && dictionary.size() != size)
 			throw new FormatException();
 	}
-
-	public static void checkRange(@Nullable Long l, long min, long max)
-			throws FormatException {
-		if (l != null && (l < min || l > max)) throw new FormatException();
-	}
 }

bramble-api/src/test/java/org/briarproject/bramble/test/TimeTravel.java

@@ -1,8 +0,0 @@
-package org.briarproject.bramble.test;
-
-public interface TimeTravel {
-
-	void setCurrentTimeMillis(long now) throws InterruptedException;
-
-	void addCurrentTimeMillis(long add) throws InterruptedException;
-}

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

@@ -21,6 +21,7 @@ import org.briarproject.bramble.rendezvous.RendezvousModule;
 import org.briarproject.bramble.settings.SettingsModule;
 import org.briarproject.bramble.sync.SyncModule;
 import org.briarproject.bramble.sync.validation.ValidationModule;
+import org.briarproject.bramble.system.ClockModule;
 import org.briarproject.bramble.transport.TransportModule;
 import org.briarproject.bramble.versioning.VersioningModule;
 
@@ -28,6 +29,7 @@ import dagger.Module;
 
 @Module(includes = {
 		ClientModule.class,
+		ClockModule.class,
 		ConnectionModule.class,
 		ContactModule.class,
 		CryptoModule.class,

bramble-core/src/main/java/org/briarproject/bramble/client/ClientHelperImpl.java

@@ -2,13 +2,11 @@ package org.briarproject.bramble.client;
 
 import org.briarproject.bramble.api.FormatException;
 import org.briarproject.bramble.api.client.ClientHelper;
-import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.crypto.CryptoComponent;
 import org.briarproject.bramble.api.crypto.KeyParser;
 import org.briarproject.bramble.api.crypto.PrivateKey;
 import org.briarproject.bramble.api.crypto.PublicKey;
 import org.briarproject.bramble.api.data.BdfDictionary;
-import org.briarproject.bramble.api.data.BdfEntry;
 import org.briarproject.bramble.api.data.BdfList;
 import org.briarproject.bramble.api.data.BdfReader;
 import org.briarproject.bramble.api.data.BdfReaderFactory;
@@ -41,7 +39,6 @@ import java.util.Map.Entry;
 import javax.annotation.concurrent.Immutable;
 import javax.inject.Inject;
 
-import static org.briarproject.bramble.api.client.ContactGroupConstants.GROUP_KEY_CONTACT_ID;
 import static org.briarproject.bramble.api.identity.Author.FORMAT_VERSION;
 import static org.briarproject.bramble.api.identity.AuthorConstants.MAX_AUTHOR_NAME_LENGTH;
 import static org.briarproject.bramble.api.identity.AuthorConstants.MAX_PUBLIC_KEY_LENGTH;
@@ -392,27 +389,4 @@ class ClientHelperImpl implements ClientHelper {
 		return tpMap;
 	}
 
-	@Override
-	public ContactId getContactId(Transaction txn, GroupId contactGroupId)
-			throws DbException {
-		try {
-			BdfDictionary meta =
-					getGroupMetadataAsDictionary(txn, contactGroupId);
-			return new ContactId(meta.getLong(GROUP_KEY_CONTACT_ID).intValue());
-		} catch (FormatException e) {
-			throw new DbException(e); // Invalid group metadata
-		}
-	}
-
-	@Override
-	public void setContactId(Transaction txn, GroupId contactGroupId,
-			ContactId c) throws DbException {
-		BdfDictionary meta = BdfDictionary.of(
-				new BdfEntry(GROUP_KEY_CONTACT_ID, c.getInt()));
-		try {
-			mergeGroupMetadata(txn, contactGroupId, meta);
-		} catch (FormatException e) {
-			throw new AssertionError(e);
-		}
-	}
 }

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

@@ -9,14 +9,16 @@ import java.util.logging.Logger;
 
 import javax.inject.Inject;
 
+import static java.lang.Math.min;
 import static java.util.logging.Level.INFO;
+import static java.util.logging.Logger.getLogger;
 import static org.briarproject.bramble.util.LogUtils.logDuration;
 import static org.briarproject.bramble.util.LogUtils.now;
 
 class ScryptKdf implements PasswordBasedKdf {
 
 	private static final Logger LOG =
-			Logger.getLogger(ScryptKdf.class.getName());
+			getLogger(ScryptKdf.class.getName());
 
 	private static final int MIN_COST = 256; // Min parameter N
 	private static final int MAX_COST = 1024 * 1024; // Max parameter N
@@ -33,10 +35,20 @@ class ScryptKdf implements PasswordBasedKdf {
 
 	@Override
 	public int chooseCostParameter() {
+		// Scrypt uses at least 128 * N * r bytes of memory. Don't use more
+		// than half of the JVM's max heap size or we may run out of memory.
+		// https://blog.filippo.io/the-scrypt-parameters/
+		long maxMemory = Runtime.getRuntime().maxMemory();
+		long maxCost = min(MAX_COST, maxMemory / BLOCK_SIZE / 256);
+		if (LOG.isLoggable(INFO) && maxCost < MAX_COST) {
+			LOG.info("Max cost capped at " + maxCost
+					+ " due to max heap size " + maxMemory);
+		}
 		// Increase the cost from min to max while measuring performance
 		int cost = MIN_COST;
-		while (cost * 2 <= MAX_COST && measureDuration(cost) * 2 <= TARGET_MS)
+		while (cost * 2 <= maxCost && measureDuration(cost) * 2 <= TARGET_MS) {
 			cost *= 2;
+		}
 		if (LOG.isLoggable(INFO))
 			LOG.info("KDF cost parameter " + cost);
 		return cost;

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

@@ -36,4 +36,10 @@ class StreamDecrypterFactoryImpl implements StreamDecrypterFactory {
 			SecretKey headerKey) {
 		return new StreamDecrypterImpl(in, cipherProvider.get(), 0, headerKey);
 	}
+
+	@Override
+	public StreamDecrypter createLogStreamDecrypter(InputStream in,
+			SecretKey headerKey) {
+		return createContactExchangeStreamDecrypter(in, headerKey);
+	}
 }

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

@@ -51,7 +51,7 @@ class StreamEncrypterFactoryImpl implements StreamEncrypterFactory {
 	}
 
 	@Override
-	public StreamEncrypter createContactExchangeStreamDecrypter(
+	public StreamEncrypter createContactExchangeStreamEncrypter(
 			OutputStream out, SecretKey headerKey) {
 		AuthenticatedCipher cipher = cipherProvider.get();
 		byte[] streamHeaderNonce = new byte[STREAM_HEADER_NONCE_LENGTH];
@@ -60,4 +60,10 @@ class StreamEncrypterFactoryImpl implements StreamEncrypterFactory {
 		return new StreamEncrypterImpl(out, cipher, 0, null, streamHeaderNonce,
 				headerKey, frameKey);
 	}
+
+	@Override
+	public StreamEncrypter createLogStreamEncrypter(OutputStream out,
+			SecretKey headerKey) {
+		return createContactExchangeStreamEncrypter(out, headerKey);
+	}
 }

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

@@ -24,15 +24,21 @@ class StreamReaderFactoryImpl implements StreamReaderFactory {
 
 	@Override
 	public InputStream createStreamReader(InputStream in, StreamContext ctx) {
-		return new StreamReaderImpl(
+		return new StreamReaderImpl(streamDecrypterFactory
-				streamDecrypterFactory.createStreamDecrypter(in, ctx));
+				.createStreamDecrypter(in, ctx));
 	}
 
 	@Override
 	public InputStream createContactExchangeStreamReader(InputStream in,
 			SecretKey headerKey) {
-		return new StreamReaderImpl(
+		return new StreamReaderImpl(streamDecrypterFactory
-				streamDecrypterFactory.createContactExchangeStreamDecrypter(in,
+				.createContactExchangeStreamDecrypter(in, headerKey));
-						headerKey));
+	}
+
+	@Override
+	public InputStream createLogStreamReader(InputStream in,
+			SecretKey headerKey) {
+		return new StreamReaderImpl(streamDecrypterFactory
+				.createLogStreamDecrypter(in, headerKey));
 	}
 }

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

@@ -26,15 +26,21 @@ class StreamWriterFactoryImpl implements StreamWriterFactory {
 	@Override
 	public StreamWriter createStreamWriter(OutputStream out,
 			StreamContext ctx) {
-		return new StreamWriterImpl(
+		return new StreamWriterImpl(streamEncrypterFactory
-				streamEncrypterFactory.createStreamEncrypter(out, ctx));
+				.createStreamEncrypter(out, ctx));
 	}
 
 	@Override
 	public StreamWriter createContactExchangeStreamWriter(OutputStream out,
 			SecretKey headerKey) {
-		return new StreamWriterImpl(
+		return new StreamWriterImpl(streamEncrypterFactory
-				streamEncrypterFactory.createContactExchangeStreamDecrypter(out,
+				.createContactExchangeStreamEncrypter(out, headerKey));
-						headerKey));
+	}
+
+	@Override
+	public StreamWriter createLogStreamWriter(OutputStream out,
+			SecretKey headerKey) {
+		return new StreamWriterImpl(streamEncrypterFactory
+				.createLogStreamEncrypter(out, headerKey));
 	}
 }

bramble-core/src/main/java/org/briarproject/bramble/versioning/ClientVersioningConstants.java

@@ -5,5 +5,6 @@ interface ClientVersioningConstants {
 	// Metadata keys
 	String MSG_KEY_UPDATE_VERSION = "version";
 	String MSG_KEY_LOCAL = "local";
+	String GROUP_KEY_CONTACT_ID = "contactId";
 }
 

bramble-core/src/main/java/org/briarproject/bramble/versioning/ClientVersioningManagerImpl.java

@@ -50,6 +50,7 @@ import static java.util.Collections.emptyList;
 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.Group.Visibility.VISIBLE;
+import static org.briarproject.bramble.versioning.ClientVersioningConstants.GROUP_KEY_CONTACT_ID;
 import static org.briarproject.bramble.versioning.ClientVersioningConstants.MSG_KEY_LOCAL;
 import static org.briarproject.bramble.versioning.ClientVersioningConstants.MSG_KEY_UPDATE_VERSION;
 
@@ -160,7 +161,13 @@ class ClientVersioningManagerImpl implements ClientVersioningManager,
 		db.addGroup(txn, g);
 		db.setGroupVisibility(txn, c.getId(), g.getId(), SHARED);
 		// Attach the contact ID to the group
-		clientHelper.setContactId(txn, g.getId(), c.getId());
+		BdfDictionary meta = new BdfDictionary();
+		meta.put(GROUP_KEY_CONTACT_ID, c.getId().getInt());
+		try {
+			clientHelper.mergeGroupMetadata(txn, g.getId(), meta);
+		} catch (FormatException e) {
+			throw new AssertionError(e);
+		}
 		// Create and store the first local update
 		List<ClientVersion> versions = new ArrayList<>(clients);
 		Collections.sort(versions);
@@ -222,7 +229,7 @@ class ClientVersioningManagerImpl implements ClientVersioningManager,
 			Map<ClientMajorVersion, Visibility> after =
 					getVisibilities(newLocalStates, newRemoteStates);
 			// Call hooks for any visibilities that have changed
-			ContactId c = clientHelper.getContactId(txn, m.getGroupId());
+			ContactId c = getContactId(txn, m.getGroupId());
 			if (!before.equals(after)) {
 				Contact contact = db.getContact(txn, c);
 				callVisibilityHooks(txn, contact, before, after);
@@ -514,6 +521,17 @@ class ClientVersioningManagerImpl implements ClientVersioningManager,
 		storeUpdate(txn, g, states, 1);
 	}
 
+	private ContactId getContactId(Transaction txn, GroupId g)
+			throws DbException {
+		try {
+			BdfDictionary meta =
+					clientHelper.getGroupMetadataAsDictionary(txn, g);
+			return new ContactId(meta.getLong(GROUP_KEY_CONTACT_ID).intValue());
+		} catch (FormatException e) {
+			throw new DbException(e);
+		}
+	}
+
 	private List<ClientState> updateStatesFromRemoteStates(
 			List<ClientState> oldLocalStates, List<ClientState> remoteStates) {
 		Set<ClientMajorVersion> remoteSet = new HashSet<>();

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

@@ -1,18 +1,18 @@
 package org.briarproject.bramble;
 
-import org.briarproject.bramble.system.TimeTravelModule;
+import org.briarproject.bramble.system.DefaultTaskSchedulerModule;
 
 public interface BrambleCoreIntegrationTestEagerSingletons
 		extends BrambleCoreEagerSingletons {
 
-	void inject(TimeTravelModule.EagerSingletons init);
+	void inject(DefaultTaskSchedulerModule.EagerSingletons init);
 
 	class Helper {
 
 		public static void injectEagerSingletons(
 				BrambleCoreIntegrationTestEagerSingletons c) {
 			BrambleCoreEagerSingletons.Helper.injectEagerSingletons(c);
-			c.inject(new TimeTravelModule.EagerSingletons());
+			c.inject(new DefaultTaskSchedulerModule.EagerSingletons());
 		}
 	}
 }

bramble-core/src/test/java/org/briarproject/bramble/system/TestTaskScheduler.java

@@ -1,122 +0,0 @@
-package org.briarproject.bramble.system;
-
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
-import org.briarproject.bramble.api.system.Clock;
-import org.briarproject.bramble.api.system.TaskScheduler;
-
-import java.util.Queue;
-import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.Executor;
-import java.util.concurrent.PriorityBlockingQueue;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.atomic.AtomicBoolean;
-
-import static java.util.concurrent.TimeUnit.MILLISECONDS;
-import static java.util.concurrent.TimeUnit.MINUTES;
-import static org.junit.Assert.fail;
-
-/**
- * A {@link TaskScheduler} for use in tests. The scheduler keeps all scheduled
- * tasks in a queue until {@link #runTasks()} is called.
- */
-@NotNullByDefault
-class TestTaskScheduler implements TaskScheduler {
-
-	private final Queue<Task> queue = new PriorityBlockingQueue<>();
-	private final Clock clock;
-
-	TestTaskScheduler(Clock clock) {
-		this.clock = clock;
-	}
-
-	@Override
-	public Cancellable schedule(Runnable task, Executor executor, long delay,
-			TimeUnit unit) {
-		AtomicBoolean cancelled = new AtomicBoolean(false);
-		return schedule(task, executor, delay, unit, cancelled);
-	}
-
-	@Override
-	public Cancellable scheduleWithFixedDelay(Runnable task, Executor executor,
-			long delay, long interval, TimeUnit unit) {
-		AtomicBoolean cancelled = new AtomicBoolean(false);
-		return scheduleWithFixedDelay(task, executor, delay, interval, unit,
-				cancelled);
-	}
-
-	private Cancellable schedule(Runnable task, Executor executor, long delay,
-			TimeUnit unit, AtomicBoolean cancelled) {
-		long delayMillis = MILLISECONDS.convert(delay, unit);
-		long dueMillis = clock.currentTimeMillis() + delayMillis;
-		Task t = new Task(task, executor, dueMillis, cancelled);
-		queue.add(t);
-		return t;
-	}
-
-	private Cancellable scheduleWithFixedDelay(Runnable task, Executor executor,
-			long delay, long interval, TimeUnit unit, AtomicBoolean cancelled) {
-		// All executions of this periodic task share a cancelled flag
-		Runnable wrapped = () -> {
-			task.run();
-			scheduleWithFixedDelay(task, executor, interval, interval, unit,
-					cancelled);
-		};
-		return schedule(wrapped, executor, delay, unit, cancelled);
-	}
-
-	/**
-	 * Runs any scheduled tasks that are due.
-	 */
-	void runTasks() throws InterruptedException {
-		long now = clock.currentTimeMillis();
-		while (true) {
-			Task t = queue.peek();
-			if (t == null || t.dueMillis > now) return;
-			t = queue.poll();
-			// Submit the task to its executor and wait for it to finish
-			if (!t.run().await(1, MINUTES)) fail();
-		}
-	}
-
-	private static class Task
-			implements Cancellable, Comparable<Task> {
-
-		private final Runnable task;
-		private final Executor executor;
-		private final long dueMillis;
-		private final AtomicBoolean cancelled;
-
-		private Task(Runnable task, Executor executor, long dueMillis,
-				AtomicBoolean cancelled) {
-			this.task = task;
-			this.executor = executor;
-			this.dueMillis = dueMillis;
-			this.cancelled = cancelled;
-		}
-
-		@SuppressWarnings("UseCompareMethod") // Animal Sniffer
-		@Override
-		public int compareTo(Task task) {
-			return Long.valueOf(dueMillis).compareTo(task.dueMillis);
-		}
-
-		/**
-		 * Submits the task to its executor and returns a latch that will be
-		 * released when the task finishes.
-		 */
-		public CountDownLatch run() {
-			if (cancelled.get()) return new CountDownLatch(0);
-			CountDownLatch latch = new CountDownLatch(1);
-			executor.execute(() -> {
-				task.run();
-				latch.countDown();
-			});
-			return latch;
-		}
-
-		@Override
-		public void cancel() {
-			cancelled.set(true);
-		}
-	}
-}

bramble-core/src/test/java/org/briarproject/bramble/system/TimeTravelModule.java

@@ -1,98 +0,0 @@
-package org.briarproject.bramble.system;
-
-import org.briarproject.bramble.api.lifecycle.LifecycleManager;
-import org.briarproject.bramble.api.system.Clock;
-import org.briarproject.bramble.api.system.TaskScheduler;
-import org.briarproject.bramble.test.SettableClock;
-import org.briarproject.bramble.test.TimeTravel;
-
-import java.util.concurrent.RejectedExecutionHandler;
-import java.util.concurrent.ScheduledExecutorService;
-import java.util.concurrent.ScheduledThreadPoolExecutor;
-import java.util.concurrent.atomic.AtomicLong;
-
-import javax.inject.Inject;
-import javax.inject.Singleton;
-
-import dagger.Module;
-import dagger.Provides;
-
-@Module
-public class TimeTravelModule {
-
-	public static class EagerSingletons {
-		@Inject
-		TaskScheduler scheduler;
-	}
-
-	private final ScheduledExecutorService scheduledExecutorService;
-	private final Clock clock;
-	private final TaskScheduler taskScheduler;
-	private final TimeTravel timeTravel;
-
-	public TimeTravelModule() {
-		this(false);
-	}
-
-	public TimeTravelModule(boolean travel) {
-		// Discard tasks that are submitted during shutdown
-		RejectedExecutionHandler policy =
-				new ScheduledThreadPoolExecutor.DiscardPolicy();
-		scheduledExecutorService =
-				new ScheduledThreadPoolExecutor(1, policy);
-		if (travel) {
-			// Use a SettableClock and TestTaskScheduler to allow time travel
-			AtomicLong time = new AtomicLong(System.currentTimeMillis());
-			clock = new SettableClock(time);
-			TestTaskScheduler testTaskScheduler = new TestTaskScheduler(clock);
-			taskScheduler = testTaskScheduler;
-			timeTravel = new TimeTravel() {
-				@Override
-				public void setCurrentTimeMillis(long now)
-						throws InterruptedException {
-					time.set(now);
-					testTaskScheduler.runTasks();
-				}
-
-				@Override
-				public void addCurrentTimeMillis(long add)
-						throws InterruptedException {
-					time.addAndGet(add);
-					testTaskScheduler.runTasks();
-				}
-			};
-		} else {
-			// Use the default clock and task scheduler
-			clock = new SystemClock();
-			taskScheduler = new TaskSchedulerImpl(scheduledExecutorService);
-			timeTravel = new TimeTravel() {
-				@Override
-				public void setCurrentTimeMillis(long now) {
-					throw new UnsupportedOperationException();
-				}
-
-				@Override
-				public void addCurrentTimeMillis(long add) {
-					throw new UnsupportedOperationException();
-				}
-			};
-		}
-	}
-
-	@Provides
-	Clock provideClock() {
-		return clock;
-	}
-
-	@Provides
-	@Singleton
-	TaskScheduler provideTaskScheduler(LifecycleManager lifecycleManager) {
-		lifecycleManager.registerForShutdown(scheduledExecutorService);
-		return taskScheduler;
-	}
-
-	@Provides
-	TimeTravel provideTimeTravel() {
-		return timeTravel;
-	}
-}

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

@@ -3,8 +3,8 @@ package org.briarproject.bramble.test;
 import org.briarproject.bramble.api.FeatureFlags;
 import org.briarproject.bramble.battery.DefaultBatteryManagerModule;
 import org.briarproject.bramble.event.DefaultEventExecutorModule;
+import org.briarproject.bramble.system.DefaultTaskSchedulerModule;
 import org.briarproject.bramble.system.DefaultWakefulIoExecutorModule;
-import org.briarproject.bramble.system.TimeTravelModule;
 
 import dagger.Module;
 import dagger.Provides;
@@ -12,11 +12,11 @@ import dagger.Provides;
 @Module(includes = {
 		DefaultBatteryManagerModule.class,
 		DefaultEventExecutorModule.class,
+		DefaultTaskSchedulerModule.class,
 		DefaultWakefulIoExecutorModule.class,
 		TestDatabaseConfigModule.class,
 		TestPluginConfigModule.class,
-		TestSecureRandomModule.class,
+		TestSecureRandomModule.class
-		TimeTravelModule.class
 })
 public class BrambleCoreIntegrationTestModule {
 

bramble-core/src/test/java/org/briarproject/bramble/versioning/ClientVersioningManagerImplTest.java

@@ -38,6 +38,7 @@ import static org.briarproject.bramble.test.TestUtils.getContact;
 import static org.briarproject.bramble.test.TestUtils.getGroup;
 import static org.briarproject.bramble.test.TestUtils.getMessage;
 import static org.briarproject.bramble.test.TestUtils.getRandomId;
+import static org.briarproject.bramble.versioning.ClientVersioningConstants.GROUP_KEY_CONTACT_ID;
 import static org.briarproject.bramble.versioning.ClientVersioningConstants.MSG_KEY_LOCAL;
 import static org.briarproject.bramble.versioning.ClientVersioningConstants.MSG_KEY_UPDATE_VERSION;
 import static org.junit.Assert.assertEquals;
@@ -59,6 +60,8 @@ public class ClientVersioningManagerImplTest extends BrambleMockTestCase {
 	private final ClientId clientId = getClientId();
 	private final long now = System.currentTimeMillis();
 	private final Transaction txn = new Transaction(null, false);
+	private final BdfDictionary groupMeta = BdfDictionary.of(
+			new BdfEntry(GROUP_KEY_CONTACT_ID, contact.getId().getInt()));
 
 	private ClientVersioningManagerImpl createInstance() {
 		context.checking(new Expectations() {{
@@ -120,8 +123,8 @@ public class ClientVersioningManagerImplTest extends BrambleMockTestCase {
 			oneOf(db).addGroup(txn, contactGroup);
 			oneOf(db).setGroupVisibility(txn, contact.getId(),
 					contactGroup.getId(), SHARED);
-			oneOf(clientHelper).setContactId(txn, contactGroup.getId(),
+			oneOf(clientHelper).mergeGroupMetadata(txn, contactGroup.getId(),
-					contact.getId());
+					groupMeta);
 			oneOf(clock).currentTimeMillis();
 			will(returnValue(now));
 			oneOf(clientHelper).createMessage(contactGroup.getId(), now,
@@ -457,8 +460,9 @@ public class ClientVersioningManagerImplTest extends BrambleMockTestCase {
 			oneOf(db).deleteMessage(txn, oldRemoteUpdateId);
 			oneOf(db).deleteMessageMetadata(txn, oldRemoteUpdateId);
 			// Get contact ID
-			oneOf(clientHelper).getContactId(txn, contactGroup.getId());
+			oneOf(clientHelper).getGroupMetadataAsDictionary(txn,
-			will(returnValue(contact.getId()));
+					contactGroup.getId());
+			will(returnValue(groupMeta));
 			// No states or visibilities have changed
 		}});
 
@@ -488,9 +492,10 @@ public class ClientVersioningManagerImplTest extends BrambleMockTestCase {
 			// Load the latest local update
 			oneOf(clientHelper).getMessageAsList(txn, oldLocalUpdateId);
 			will(returnValue(oldLocalUpdateBody));
-			// Get contact ID
+			// Get client ID
-			oneOf(clientHelper).getContactId(txn, contactGroup.getId());
+			oneOf(clientHelper).getGroupMetadataAsDictionary(txn,
-			will(returnValue(contact.getId()));
+					contactGroup.getId());
+			will(returnValue(groupMeta));
 			// No states or visibilities have changed
 		}});
 
@@ -541,6 +546,8 @@ public class ClientVersioningManagerImplTest extends BrambleMockTestCase {
 		BdfDictionary newLocalUpdateMeta = BdfDictionary.of(
 				new BdfEntry(MSG_KEY_UPDATE_VERSION, 2L),
 				new BdfEntry(MSG_KEY_LOCAL, true));
+		BdfDictionary groupMeta = BdfDictionary.of(
+				new BdfEntry(GROUP_KEY_CONTACT_ID, contact.getId().getInt()));
 
 		context.checking(new Expectations() {{
 			oneOf(clientHelper).toList(newRemoteUpdate);
@@ -570,8 +577,9 @@ public class ClientVersioningManagerImplTest extends BrambleMockTestCase {
 			oneOf(clientHelper).addLocalMessage(txn, newLocalUpdate,
 					newLocalUpdateMeta, true, false);
 			// The client's visibility has changed
-			oneOf(clientHelper).getContactId(txn, contactGroup.getId());
+			oneOf(clientHelper).getGroupMetadataAsDictionary(txn,
-			will(returnValue(contact.getId()));
+					contactGroup.getId());
+			will(returnValue(groupMeta));
 			oneOf(db).getContact(txn, contact.getId());
 			will(returnValue(contact));
 			oneOf(hook).onClientVisibilityChanging(txn, contact, visibility);
@@ -611,6 +619,8 @@ public class ClientVersioningManagerImplTest extends BrambleMockTestCase {
 		BdfDictionary newLocalUpdateMeta = BdfDictionary.of(
 				new BdfEntry(MSG_KEY_UPDATE_VERSION, 2L),
 				new BdfEntry(MSG_KEY_LOCAL, true));
+		BdfDictionary groupMeta = BdfDictionary.of(
+				new BdfEntry(GROUP_KEY_CONTACT_ID, contact.getId().getInt()));
 
 		context.checking(new Expectations() {{
 			oneOf(clientHelper).toList(newRemoteUpdate);
@@ -640,8 +650,9 @@ public class ClientVersioningManagerImplTest extends BrambleMockTestCase {
 			oneOf(clientHelper).addLocalMessage(txn, newLocalUpdate,
 					newLocalUpdateMeta, true, false);
 			// The client's visibility has changed
-			oneOf(clientHelper).getContactId(txn, contactGroup.getId());
+			oneOf(clientHelper).getGroupMetadataAsDictionary(txn,
-			will(returnValue(contact.getId()));
+					contactGroup.getId());
+			will(returnValue(groupMeta));
 			oneOf(db).getContact(txn, contact.getId());
 			will(returnValue(contact));
 			oneOf(hook).onClientVisibilityChanging(txn, contact, INVISIBLE);

bramble-java/build.gradle

@@ -16,8 +16,8 @@ dependencies {
 	implementation fileTree(dir: 'libs', include: '*.jar')
 	implementation 'net.java.dev.jna:jna:4.5.2'
 	implementation 'net.java.dev.jna:jna-platform:4.5.2'
-	tor 'org.briarproject:tor:0.3.5.12@zip'
+	tor 'org.briarproject:tor:0.3.5.13@zip'
-	tor 'org.briarproject:obfs4proxy:0.0.7@zip'
+	tor 'org.briarproject:obfs4proxy:0.0.12-dev-40245c4a@zip'
 
 	annotationProcessor 'com.google.dagger:dagger-compiler:2.24'
 

bramble-java/src/main/java/org/briarproject/bramble/BrambleJavaModule.java

@@ -8,9 +8,9 @@ import org.briarproject.bramble.system.JavaSystemModule;
 import dagger.Module;
 
 @Module(includes = {
-		CircumventionModule.class,
 		JavaNetworkModule.class,
 		JavaSystemModule.class,
+		CircumventionModule.class,
 		SocksModule.class
 })
 public class BrambleJavaModule {

bramble-java/src/main/java/org/briarproject/bramble/plugin/tor/UnixTorPlugin.java

@@ -14,12 +14,18 @@ import org.briarproject.bramble.api.system.ResourceProvider;
 
 import java.io.File;
 import java.util.concurrent.Executor;
+import java.util.logging.Logger;
 
 import javax.net.SocketFactory;
 
+import static java.util.logging.Level.INFO;
+import static java.util.logging.Logger.getLogger;
+
 @NotNullByDefault
 class UnixTorPlugin extends JavaTorPlugin {
 
+	private static final Logger LOG = getLogger(UnixTorPlugin.class.getName());
+
 	UnixTorPlugin(Executor ioExecutor,
 			Executor wakefulIoExecutor,
 			NetworkManager networkManager,
@@ -41,6 +47,8 @@ class UnixTorPlugin extends JavaTorPlugin {
 				circumventionProvider, batteryManager, backoff,
 				torRendezvousCrypto, callback, architecture,
 				maxLatency, maxIdleTime, torDirectory);
+		boolean isGlibc = isGlibc();
+		if (LOG.isLoggable(INFO)) LOG.info("System uses glibc: " + isGlibc);
 	}
 
 	@Override
@@ -48,10 +56,27 @@ class UnixTorPlugin extends JavaTorPlugin {
 		return CLibrary.INSTANCE.getpid();
 	}
 
+	protected boolean isGlibc() {
+		try {
+			GnuCLibrary glibc = Native.loadLibrary("c", GnuCLibrary.class);
+			if (LOG.isLoggable(INFO)) {
+				LOG.info("glibc version " + glibc.gnu_get_libc_version());
+			}
+			return true;
+		} catch (UnsatisfiedLinkError e) {
+			return false;
+		}
+	}
+
 	private interface CLibrary extends Library {
 
 		CLibrary INSTANCE = Native.loadLibrary("c", CLibrary.class);
 
 		int getpid();
 	}
+
+	private interface GnuCLibrary extends Library {
+
+		String gnu_get_libc_version();
+	}
 }

bramble-java/witness.gradle

@@ -23,8 +23,8 @@ dependencyVerification {
         'org.apache.ant:ant-launcher:1.9.4:ant-launcher-1.9.4.jar:7bccea20b41801ca17bcbc909a78c835d0f443f12d639c77bd6ae3d05861608d',
         'org.apache.ant:ant:1.9.4:ant-1.9.4.jar:649ae0730251de07b8913f49286d46bba7b92d47c5f332610aa426c4f02161d8',
         'org.beanshell:bsh:1.3.0:bsh-1.3.0.jar:9b04edc75d19db54f1b4e8b5355e9364384c6cf71eb0a1b9724c159d779879f8',
-        'org.briarproject:obfs4proxy:0.0.7:obfs4proxy-0.0.7.zip:5b2f693262ce43a7e130f7cc7d5d1617925330640a2eb6d71085e95df8ee0642',
+        'org.briarproject:obfs4proxy:0.0.12-dev-40245c4a:obfs4proxy-0.0.12-dev-40245c4a.zip:172029e7058b3a83ac93ac4991a44bf76e16ce8d46f558f5836d57da3cb3a766',
-        'org.briarproject:tor:0.3.5.12:tor-0.3.5.12.zip:2f542c4befd216f2226bf7c76e3b8b2d99af6f146a8cb28bf727f42014587006',
+        'org.briarproject:tor:0.3.5.13:tor-0.3.5.13.zip:1c5f0b821ee2aadb0ea04aa96caab3ca0a08370cce8de81c2dfe04d172f8a2a0',
         'org.checkerframework:checker-compat-qual:2.5.3:checker-compat-qual-2.5.3.jar:d76b9afea61c7c082908023f0cbc1427fab9abd2df915c8b8a3e7a509bccbc6d',
         'org.checkerframework:checker-qual:2.5.2:checker-qual-2.5.2.jar:64b02691c8b9d4e7700f8ee2e742dce7ea2c6e81e662b7522c9ee3bf568c040a',
         'org.codehaus.mojo:animal-sniffer-annotations:1.17:animal-sniffer-annotations-1.17.jar:92654f493ecfec52082e76354f0ebf87648dc3d5cec2e3c3cdb947c016747a53',

briar-android/build.gradle

@@ -22,8 +22,8 @@ android {
 	defaultConfig {
 		minSdkVersion 16
 		targetSdkVersion 29
-		versionCode 10214
+		versionCode 10216
-		versionName "1.2.14"
+		versionName "1.2.16"
 		applicationId "org.briarproject.briar.android"
 
 		vectorDrawables.useSupportLibrary = true
@@ -136,6 +136,7 @@ dependencies {
 	testImplementation "org.jmock:jmock:$jmockVersion"
 	testImplementation "org.jmock:jmock-junit4:$jmockVersion"
 	testImplementation "org.jmock:jmock-legacy:$jmockVersion"
+	testAnnotationProcessor "com.google.dagger:dagger-compiler:2.24"
 
 	androidTestImplementation project(path: ':bramble-api', configuration: 'testOutput')
 	androidTestImplementation 'androidx.test.ext:junit:1.1.2'

briar-android/src/androidTestOfficial/java/org/briarproject/briar/android/BriarUiTestComponent.java

@@ -3,7 +3,6 @@ package org.briarproject.briar.android;
 import org.briarproject.bramble.BrambleAndroidModule;
 import org.briarproject.bramble.BrambleCoreModule;
 import org.briarproject.bramble.account.BriarAccountModule;
-import org.briarproject.bramble.system.ClockModule;
 import org.briarproject.briar.BriarCoreModule;
 import org.briarproject.briar.android.attachment.AttachmentModule;
 import org.briarproject.briar.android.attachment.media.MediaModule;
@@ -17,7 +16,6 @@ import dagger.Component;
 @Component(modules = {
 		AppModule.class,
 		AttachmentModule.class,
-		ClockModule.class,
 		MediaModule.class,
 		BriarCoreModule.class,
 		BrambleAndroidModule.class,

briar-android/src/androidTestScreenshot/java/org/briarproject/briar/android/BriarUiTestComponent.java

@@ -3,7 +3,6 @@ package org.briarproject.briar.android;
 import org.briarproject.bramble.BrambleAndroidModule;
 import org.briarproject.bramble.BrambleCoreModule;
 import org.briarproject.bramble.account.BriarAccountModule;
-import org.briarproject.bramble.system.ClockModule;
 import org.briarproject.briar.BriarCoreModule;
 import org.briarproject.briar.android.attachment.AttachmentModule;
 import org.briarproject.briar.android.attachment.media.MediaModule;
@@ -18,7 +17,6 @@ import dagger.Component;
 @Component(modules = {
 		AppModule.class,
 		AttachmentModule.class,
-		ClockModule.class,
 		MediaModule.class,
 		BriarCoreModule.class,
 		BrambleAndroidModule.class,

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

@@ -29,12 +29,12 @@ import org.briarproject.bramble.api.system.AndroidWakeLockManager;
 import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.bramble.api.system.LocationUtils;
 import org.briarproject.bramble.plugin.tor.CircumventionProvider;
-import org.briarproject.bramble.system.ClockModule;
 import org.briarproject.briar.BriarCoreEagerSingletons;
 import org.briarproject.briar.BriarCoreModule;
 import org.briarproject.briar.android.attachment.AttachmentModule;
 import org.briarproject.briar.android.attachment.media.MediaModule;
 import org.briarproject.briar.android.conversation.glide.BriarModelLoader;
+import org.briarproject.briar.android.logging.CachingLogHandler;
 import org.briarproject.briar.android.login.SignInReminderReceiver;
 import org.briarproject.briar.android.view.EmojiTextInputView;
 import org.briarproject.briar.api.android.AndroidNotificationManager;
@@ -42,7 +42,6 @@ import org.briarproject.briar.api.android.DozeWatchdog;
 import org.briarproject.briar.api.android.LockManager;
 import org.briarproject.briar.api.android.ScreenFilterMonitor;
 import org.briarproject.briar.api.attachment.AttachmentReader;
-import org.briarproject.briar.api.autodelete.AutoDeleteManager;
 import org.briarproject.briar.api.blog.BlogManager;
 import org.briarproject.briar.api.blog.BlogPostFactory;
 import org.briarproject.briar.api.blog.BlogSharingManager;
@@ -77,7 +76,6 @@ import dagger.Component;
 		BriarAccountModule.class,
 		AppModule.class,
 		AttachmentModule.class,
-		ClockModule.class,
 		MediaModule.class
 })
 public interface AndroidComponent
@@ -182,7 +180,9 @@ public interface AndroidComponent
 
 	AndroidWakeLockManager wakeLockManager();
 
-	AutoDeleteManager autoDeleteManager();
+	CachingLogHandler logHandler();
+
+	Thread.UncaughtExceptionHandler exceptionHandler();
 
 	void inject(SignInReminderReceiver briarService);
 

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

@@ -33,6 +33,7 @@ import org.briarproject.briar.android.account.SetupModule;
 import org.briarproject.briar.android.contact.ContactListModule;
 import org.briarproject.briar.android.forum.ForumModule;
 import org.briarproject.briar.android.keyagreement.ContactExchangeModule;
+import org.briarproject.briar.android.logging.LoggingModule;
 import org.briarproject.briar.android.login.LoginModule;
 import org.briarproject.briar.android.navdrawer.NavDrawerModule;
 import org.briarproject.briar.android.privategroup.conversation.GroupConversationModule;
@@ -68,11 +69,13 @@ import static java.util.Collections.singletonList;
 import static java.util.Collections.singletonMap;
 import static org.briarproject.bramble.api.reporting.ReportingConstants.DEV_ONION_ADDRESS;
 import static org.briarproject.bramble.api.reporting.ReportingConstants.DEV_PUBLIC_KEY_HEX;
+import static org.briarproject.briar.android.TestingConstants.IS_DEBUG_BUILD;
 
 @Module(includes = {
 		SetupModule.class,
 		DozeHelperModule.class,
 		ContactExchangeModule.class,
+		LoggingModule.class,
 		LoginModule.class,
 		NavDrawerModule.class,
 		ViewModelModule.class,
@@ -191,6 +194,11 @@ public class AppModule {
 			public File getReportDir() {
 				return AndroidUtils.getReportDir(app.getApplicationContext());
 			}
+
+			@Override
+			public File getLogcatFile() {
+				return AndroidUtils.getLogcatFile(app.getApplicationContext());
+			}
 		};
 		return devConfig;
 	}
@@ -268,12 +276,12 @@ public class AppModule {
 
 			@Override
 			public boolean shouldEnableImageAttachments() {
-				return false;
+				return IS_DEBUG_BUILD;
 			}
 
 			@Override
 			public boolean shouldEnableProfilePictures() {
-				return false;
+				return IS_DEBUG_BUILD;
 			}
 		};
 	}

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

@@ -6,9 +6,6 @@ import android.content.SharedPreferences;
 import org.briarproject.bramble.BrambleApplication;
 import org.briarproject.briar.android.navdrawer.NavDrawerActivity;
 
-import java.util.Collection;
-import java.util.logging.LogRecord;
-
 /**
  * This exists so that the Application object will not necessarily be cast
  * directly to the Briar application object.
@@ -17,8 +14,6 @@ public interface BriarApplication extends BrambleApplication {
 
 	Class<? extends Activity> ENTRY_ACTIVITY = NavDrawerActivity.class;
 
-	Collection<LogRecord> getRecentLogRecords();
-
 	AndroidComponent getApplicationComponent();
 
 	SharedPreferences getDefaultSharedPreferences();

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

@@ -20,12 +20,10 @@ import org.briarproject.bramble.BrambleCoreEagerSingletons;
 import org.briarproject.briar.BriarCoreEagerSingletons;
 import org.briarproject.briar.R;
 import org.briarproject.briar.android.logging.CachingLogHandler;
-import org.briarproject.briar.android.reporting.BriarExceptionHandler;
 import org.briarproject.briar.android.util.UiUtils;
 
-import java.util.Collection;
+import java.lang.Thread.UncaughtExceptionHandler;
 import java.util.logging.Handler;
-import java.util.logging.LogRecord;
 import java.util.logging.Logger;
 
 import androidx.annotation.NonNull;
@@ -42,22 +40,18 @@ public class BriarApplicationImpl extends Application
 	private static final Logger LOG =
 			getLogger(BriarApplicationImpl.class.getName());
 
-	private final CachingLogHandler logHandler = new CachingLogHandler();
-	private final BriarExceptionHandler exceptionHandler =
-			new BriarExceptionHandler(this);
-
 	private AndroidComponent applicationComponent;
 	private volatile SharedPreferences prefs;
 
 	@Override
 	protected void attachBaseContext(Context base) {
-		Thread.setDefaultUncaughtExceptionHandler(exceptionHandler);
 		if (prefs == null)
 			prefs = PreferenceManager.getDefaultSharedPreferences(base);
 		// Loading the language needs to be done here.
 		Localizer.initialize(prefs);
 		super.attachBaseContext(
 				Localizer.getInstance().setLocale(base));
+		Localizer.getInstance().setLocale(this);
 		setTheme(base, prefs);
 	}
 
@@ -67,6 +61,11 @@ public class BriarApplicationImpl extends Application
 
 		if (IS_DEBUG_BUILD) enableStrictMode();
 
+		applicationComponent = createApplicationComponent();
+		UncaughtExceptionHandler exceptionHandler =
+				applicationComponent.exceptionHandler();
+		Thread.setDefaultUncaughtExceptionHandler(exceptionHandler);
+
 		Logger rootLogger = getLogger("");
 		Handler[] handlers = rootLogger.getHandlers();
 		// Disable the Android logger for release builds
@@ -78,12 +77,12 @@ public class BriarApplicationImpl extends Application
 			// Restore the default handlers after the level raising handler
 			for (Handler handler : handlers) rootLogger.addHandler(handler);
 		}
+		CachingLogHandler logHandler = applicationComponent.logHandler();
 		rootLogger.addHandler(logHandler);
 		rootLogger.setLevel(IS_DEBUG_BUILD ? FINE : INFO);
 
 		LOG.info("Created");
 
-		applicationComponent = createApplicationComponent();
 		EmojiManager.install(new GoogleEmojiProvider());
 	}
 
@@ -136,11 +135,6 @@ public class BriarApplicationImpl extends Application
 		return applicationComponent;
 	}
 
-	@Override
-	public Collection<LogRecord> getRecentLogRecords() {
-		return logHandler.getRecentLogRecords();
-	}
-
 	@Override
 	public AndroidComponent getApplicationComponent() {
 		return applicationComponent;

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

@@ -37,7 +37,7 @@ import javax.inject.Inject;
 import androidx.core.app.NotificationCompat;
 
 import static android.app.NotificationManager.IMPORTANCE_DEFAULT;
-import static android.app.NotificationManager.IMPORTANCE_NONE;
+import static android.app.NotificationManager.IMPORTANCE_LOW;
 import static android.app.PendingIntent.FLAG_UPDATE_CURRENT;
 import static android.content.Intent.ACTION_SHUTDOWN;
 import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TASK;
@@ -56,6 +56,7 @@ import static org.briarproject.briar.android.BriarApplication.ENTRY_ACTIVITY;
 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_CHANNEL_OLD_ID;
 import static org.briarproject.briar.api.android.AndroidNotificationManager.ONGOING_NOTIFICATION_ID;
 import static org.briarproject.briar.api.android.LockManager.ACTION_LOCK;
 
@@ -120,11 +121,17 @@ public class BriarService extends Service {
 			if (SDK_INT >= 26) {
 				NotificationManager nm = (NotificationManager)
 						requireNonNull(getSystemService(NOTIFICATION_SERVICE));
+				// Delete the old notification channel, which had
+				// IMPORTANCE_NONE and showed a badge
+				nm.deleteNotificationChannel(ONGOING_CHANNEL_OLD_ID);
+				// Use IMPORTANCE_LOW so the system doesn't show its own
+				// notification on API 26-27
 				NotificationChannel ongoingChannel = new NotificationChannel(
 						ONGOING_CHANNEL_ID,
 						getString(R.string.ongoing_notification_title),
-						IMPORTANCE_NONE);
+						IMPORTANCE_LOW);
 				ongoingChannel.setLockscreenVisibility(VISIBILITY_SECRET);
+				ongoingChannel.setShowBadge(false);
 				nm.createNotificationChannel(ongoingChannel);
 				NotificationChannel failureChannel = new NotificationChannel(
 						FAILURE_CHANNEL_ID,
@@ -170,6 +177,7 @@ public class BriarService extends Service {
 	@Override
 	protected void attachBaseContext(Context base) {
 		super.attachBaseContext(Localizer.getInstance().setLocale(base));
+		Localizer.getInstance().setLocale(this);
 	}
 
 	private void showStartupFailureNotification(StartResult result) {

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

@@ -68,7 +68,21 @@ public class Localizer {
 			return new Locale(tag);
 	}
 
-	// Returns the localized version of context
+	/*
+	 * Apply localization to the specified context.
+	 *
+	 * It updates the configuration of the context's resources object but can
+	 * also return a new context derived from the context parameter. Hence
+	 * make sure to work with the return value of this method instead of
+	 * the context you passed as a parameter.
+	 *
+	 * This method also has side-effects as it calls Locale#setDefault().
+	 *
+	 * When using this in attachBaseContext() of Application, Service or
+	 * Activity subclasses, it is important to not only apply this method to the
+	 * base Context parameter received in that method, but also apply it on the
+	 * class itself which also extends Context.
+	 */
 	public Context setLocale(Context context) {
 		Resources res = context.getResources();
 		Configuration conf = res.getConfiguration();
@@ -82,7 +96,7 @@ public class Localizer {
 		Locale.setDefault(locale);
 		if (SDK_INT >= 17) {
 			conf.setLocale(locale);
-			context.createConfigurationContext(conf);
+			context = context.createConfigurationContext(conf);
 		} else
 			conf.locale = locale;
 		//noinspection deprecation

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

@@ -27,7 +27,6 @@ import org.briarproject.briar.android.contact.add.remote.NicknameFragment;
 import org.briarproject.briar.android.contact.add.remote.PendingContactListActivity;
 import org.briarproject.briar.android.conversation.AliasDialogFragment;
 import org.briarproject.briar.android.conversation.ConversationActivity;
-import org.briarproject.briar.android.conversation.ConversationSettingsDialog;
 import org.briarproject.briar.android.conversation.ImageActivity;
 import org.briarproject.briar.android.conversation.ImageFragment;
 import org.briarproject.briar.android.forum.CreateForumActivity;
@@ -239,6 +238,4 @@ public interface ActivityComponent {
 
 	void inject(ConfirmAvatarDialogFragment fragment);
 
-	void inject(ConversationSettingsDialog dialog);
-
 }

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

@@ -109,6 +109,7 @@ public abstract class BaseActivity extends AppCompatActivity
 	protected void attachBaseContext(Context base) {
 		super.attachBaseContext(
 				Localizer.getInstance().setLocale(base));
+		Localizer.getInstance().setLocale(this);
 	}
 
 	public ActivityComponent getActivityComponent() {

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

@@ -20,7 +20,6 @@ import org.briarproject.briar.android.fragment.BaseFragment;
 import org.briarproject.briar.android.view.TextInputView;
 import org.briarproject.briar.android.view.TextSendController;
 import org.briarproject.briar.android.view.TextSendController.SendListener;
-import org.briarproject.briar.android.view.TextSendController.SendState;
 import org.briarproject.briar.api.attachment.AttachmentHeader;
 
 import java.util.List;
@@ -28,9 +27,6 @@ import java.util.List;
 import javax.annotation.Nullable;
 import javax.inject.Inject;
 
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;
-
 import static android.view.View.FOCUS_DOWN;
 import static android.view.View.GONE;
 import static android.view.View.INVISIBLE;
@@ -38,7 +34,6 @@ import static android.view.View.VISIBLE;
 import static java.util.Objects.requireNonNull;
 import static org.briarproject.briar.android.activity.BriarActivity.GROUP_ID;
 import static org.briarproject.briar.android.blog.BasePostFragment.POST_ID;
-import static org.briarproject.briar.android.view.TextSendController.SendState.SENT;
 import static org.briarproject.briar.api.blog.BlogConstants.MAX_BLOG_POST_TEXT_LENGTH;
 
 @MethodsNotNullByDefault
@@ -126,8 +121,8 @@ public class ReblogFragment extends BaseFragment implements SendListener {
 	}
 
 	@Override
-	public LiveData<SendState> onSendClick(@Nullable String text,
+	public void onSendClick(@Nullable String text,
-			List<AttachmentHeader> headers, long expectedAutoDeleteTimer) {
+			List<AttachmentHeader> headers) {
 		ui.input.hideSoftKeyboard();
 		feedController.repeatPost(item, text,
 				new UiExceptionHandler<DbException>(this) {
@@ -137,7 +132,6 @@ public class ReblogFragment extends BaseFragment implements SendListener {
 					}
 				});
 		finish();
-		return new MutableLiveData<>(SENT);
 	}
 
 	private void showProgressBar() {

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

@@ -31,16 +31,12 @@ import java.util.logging.Logger;
 import javax.inject.Inject;
 
 import androidx.annotation.Nullable;
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;
 
 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.bramble.util.StringUtils.isNullOrEmpty;
-import static org.briarproject.briar.android.view.TextSendController.SendState;
-import static org.briarproject.briar.android.view.TextSendController.SendState.SENT;
 import static org.briarproject.briar.api.blog.BlogConstants.MAX_BLOG_POST_TEXT_LENGTH;
 
 @MethodsNotNullByDefault
@@ -116,8 +112,8 @@ public class WriteBlogPostActivity extends BriarActivity
 	}
 
 	@Override
-	public LiveData<SendState> onSendClick(@Nullable String text,
+	public void onSendClick(@Nullable String text,
-			List<AttachmentHeader> headers, long expectedAutoDeleteTimer) {
+			List<AttachmentHeader> headers) {
 		if (isNullOrEmpty(text)) throw new AssertionError();
 
 		// hide publish button, show progress bar
@@ -126,7 +122,6 @@ public class WriteBlogPostActivity extends BriarActivity
 		progressBar.setVisibility(VISIBLE);
 
 		storePost(text);
-		return new MutableLiveData<>(SENT);
 	}
 
 	private void storePost(String text) {

briar-android/src/main/java/org/briarproject/briar/android/contact/add/remote/AddContactViewModel.java

@@ -124,7 +124,7 @@ public class AddContactViewModel extends DbViewModel {
 		return addContactResult;
 	}
 
-	public void updatePendingContact(String name, PendingContact p) {
+	void updatePendingContact(String name, PendingContact p) {
 		runOnDbThread(() -> {
 			try {
 				contactManager.removePendingContact(p.getId());

briar-android/src/main/java/org/briarproject/briar/android/contact/add/remote/NicknameFragment.java

@@ -29,11 +29,11 @@ import org.briarproject.briar.android.fragment.BaseFragment;
 import javax.annotation.Nullable;
 import javax.inject.Inject;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.StringRes;
 import androidx.appcompat.app.AlertDialog.Builder;
 import androidx.lifecycle.LifecycleOwner;
 import androidx.lifecycle.ViewModelProvider;
-import androidx.lifecycle.ViewModelProviders;
 
 import static android.view.View.INVISIBLE;
 import static android.view.View.VISIBLE;
@@ -48,6 +48,7 @@ import static org.briarproject.briar.android.util.UiUtils.getDialogIcon;
 public class NicknameFragment extends BaseFragment {
 
 	private static final String TAG = NicknameFragment.class.getName();
+	private static final String SAVED_LINK = "savedLink";
 
 	@Inject
 	ViewModelProvider.Factory viewModelFactory;
@@ -67,6 +68,20 @@ public class NicknameFragment extends BaseFragment {
 	@Override
 	public void injectFragment(ActivityComponent component) {
 		component.inject(this);
+		viewModel = new ViewModelProvider(requireActivity(), viewModelFactory)
+				.get(AddContactViewModel.class);
+	}
+
+	@Override
+	public void onCreate(@Nullable Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		if (savedInstanceState != null) {
+			// When the activity (and the ViewModel) get destroyed,
+			// the link will not be available anymore and needs to be restored.
+			// TODO migrate to SavedStateViewModelFactory (once we can use it)
+			String savedLink = savedInstanceState.getString(SAVED_LINK);
+			if (savedLink != null) viewModel.setRemoteHandshakeLink(savedLink);
+		}
 	}
 
 	@Nullable
@@ -74,14 +89,9 @@ public class NicknameFragment extends BaseFragment {
 	public View onCreateView(LayoutInflater inflater,
 			@Nullable ViewGroup container,
 			@Nullable Bundle savedInstanceState) {
-		if (getActivity() == null || getContext() == null) return null;
-
 		View v = inflater.inflate(R.layout.fragment_nickname,
 				container, false);
 
-		viewModel = ViewModelProviders.of(getActivity(), viewModelFactory)
-				.get(AddContactViewModel.class);
-
 		contactNameLayout = v.findViewById(R.id.contactNameLayout);
 		contactNameInput = v.findViewById(R.id.contactNameInput);
 
@@ -93,6 +103,12 @@ public class NicknameFragment extends BaseFragment {
 		return v;
 	}
 
+	@Override
+	public void onSaveInstanceState(@NonNull Bundle outState) {
+		super.onSaveInstanceState(outState);
+		outState.putString(SAVED_LINK, viewModel.getRemoteHandshakeLink());
+	}
+
 	@Nullable
 	private String getNicknameOrNull() {
 		Editable text = contactNameInput.getText();

briar-android/src/main/java/org/briarproject/briar/android/conversation/AliasDialogFragment.java

@@ -31,8 +31,6 @@ import static org.briarproject.briar.android.util.UiUtils.showSoftKeyboard;
 
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
-// TODO: we can probably switch to androidx DialogFragment here but need to
-//  test this properly
 public class AliasDialogFragment extends AppCompatDialogFragment {
 
 	final static String TAG = AliasDialogFragment.class.getName();

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

@@ -50,7 +50,6 @@ import org.briarproject.briar.android.blog.BlogActivity;
 import org.briarproject.briar.android.conversation.ConversationVisitor.AttachmentCache;
 import org.briarproject.briar.android.conversation.ConversationVisitor.TextCache;
 import org.briarproject.briar.android.forum.ForumActivity;
-import org.briarproject.briar.android.fragment.BaseFragment.BaseFragmentListener;
 import org.briarproject.briar.android.introduction.IntroductionActivity;
 import org.briarproject.briar.android.privategroup.conversation.GroupActivity;
 import org.briarproject.briar.android.util.BriarSnackbarBuilder;
@@ -60,7 +59,6 @@ import org.briarproject.briar.android.view.TextAttachmentController;
 import org.briarproject.briar.android.view.TextAttachmentController.AttachmentListener;
 import org.briarproject.briar.android.view.TextInputView;
 import org.briarproject.briar.android.view.TextSendController;
-import org.briarproject.briar.android.view.TextSendController.SendState;
 import org.briarproject.briar.api.android.AndroidNotificationManager;
 import org.briarproject.briar.api.attachment.AttachmentHeader;
 import org.briarproject.briar.api.blog.BlogSharingManager;
@@ -140,14 +138,12 @@ import static org.briarproject.briar.android.util.UiUtils.observeOnce;
 import static org.briarproject.briar.android.view.AuthorView.setAvatar;
 import static org.briarproject.briar.api.messaging.MessagingConstants.MAX_ATTACHMENTS_PER_MESSAGE;
 import static org.briarproject.briar.api.messaging.MessagingConstants.MAX_PRIVATE_MESSAGE_TEXT_LENGTH;
-import static org.briarproject.briar.api.messaging.PrivateMessageFormat.TEXT_IMAGES_AUTO_DELETE;
-import static org.briarproject.briar.api.messaging.PrivateMessageFormat.TEXT_ONLY;
 
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
 public class ConversationActivity extends BriarActivity
-		implements BaseFragmentListener, EventListener, ConversationListener,
+		implements EventListener, ConversationListener, TextCache,
-		TextCache, AttachmentCache, AttachmentListener, ActionMode.Callback {
+		AttachmentCache, AttachmentListener, ActionMode.Callback {
 
 	public static final String CONTACT_ID = "briar.CONTACT_ID";
 
@@ -272,11 +268,15 @@ public class ConversationActivity extends BriarActivity
 			ImagePreview imagePreview = findViewById(R.id.imagePreview);
 			sendController = new TextAttachmentController(textInputView,
 					imagePreview, this, viewModel);
-			observeOnce(viewModel.getPrivateMessageFormat(), this, format -> {
+			viewModel.hasImageSupport().observe(this, new Observer<Boolean>() {
-				if (format != TEXT_ONLY) {
+				@Override
-					// TODO: remove cast when removing feature flag
+				public void onChanged(@Nullable Boolean hasSupport) {
-					((TextAttachmentController) sendController)
+					if (hasSupport != null && hasSupport) {
-							.setImagesSupported();
+						// TODO: remove cast when removing feature flag
+						((TextAttachmentController) sendController)
+								.setImagesSupported();
+						viewModel.hasImageSupport().removeObserver(this);
+					}
 				}
 			});
 		} else {
@@ -286,9 +286,6 @@ public class ConversationActivity extends BriarActivity
 		textInputView.setMaxTextLength(MAX_PRIVATE_MESSAGE_TEXT_LENGTH);
 		textInputView.setReady(false);
 		textInputView.setOnKeyboardShownListener(this::scrollToBottom);
-
-		viewModel.getAutoDeleteTimer().observe(this, timer ->
-				sendController.setAutoDeleteTimer(timer));
 	}
 
 	private void scrollToBottom() {
@@ -372,12 +369,6 @@ public class ConversationActivity extends BriarActivity
 		// enable alias action if available
 		observeOnce(viewModel.getContactItem(), this, contact ->
 				menu.findItem(R.id.action_set_alias).setEnabled(true));
-		// show auto-delete timer setting only, if contacts supports it
-		observeOnce(viewModel.getPrivateMessageFormat(), this, format -> {
-			boolean visible = format == TEXT_IMAGES_AUTO_DELETE;
-			MenuItem item = menu.findItem(R.id.action_conversation_settings);
-			item.setVisible(visible);
-		});
 
 		return super.onCreateOptionsMenu(menu);
 	}
@@ -399,10 +390,6 @@ public class ConversationActivity extends BriarActivity
 				AliasDialogFragment.newInstance().show(
 						getSupportFragmentManager(), AliasDialogFragment.TAG);
 				return true;
-			case R.id.action_conversation_settings:
-				if (contactId == null) return false;
-				onAutoDeleteTimerNoticeClicked();
-				return true;
 			case R.id.action_delete_all_messages:
 				askToDeleteAllMessages();
 				return true;
@@ -653,8 +640,8 @@ public class ConversationActivity extends BriarActivity
 				supportFinishAfterTransition();
 			}
 		} else if (e instanceof ConversationMessageReceivedEvent) {
-			ConversationMessageReceivedEvent<?> p =
+			ConversationMessageReceivedEvent p =
-					(ConversationMessageReceivedEvent<?>) e;
+					(ConversationMessageReceivedEvent) e;
 			if (p.getContactId().equals(contactId)) {
 				LOG.info("Message received, adding");
 				onNewConversationMessage(p.getMessageHeader());
@@ -748,13 +735,20 @@ public class ConversationActivity extends BriarActivity
 	}
 
 	@Override
-	public LiveData<SendState> onSendClick(@Nullable String text,
+	public void onSendClick(@Nullable String text,
-			List<AttachmentHeader> attachmentHeaders,
+			List<AttachmentHeader> attachmentHeaders) {
-			long expectedAutoDeleteTimer) {
 		if (isNullOrEmpty(text) && attachmentHeaders.isEmpty())
 			throw new AssertionError();
-		return viewModel
+		long timestamp = System.currentTimeMillis();
-				.sendMessage(text, attachmentHeaders, expectedAutoDeleteTimer);
+		timestamp = Math.max(timestamp, getMinTimestampForNewMessage());
+		viewModel.sendMessage(text, attachmentHeaders, timestamp);
+		textInputView.clearText();
+	}
+
+	private long getMinTimestampForNewMessage() {
+		// Don't use an earlier timestamp than the newest message
+		ConversationItem item = adapter.getLastItem();
+		return item == null ? 0 : item.getTime() + 1;
 	}
 
 	private void onAddedPrivateMessage(@Nullable PrivateMessageHeader h) {
@@ -964,11 +958,13 @@ public class ConversationActivity extends BriarActivity
 			adapter.notifyItemChanged(position, item);
 		}
 		runOnDbThread(() -> {
+			long timestamp = System.currentTimeMillis();
+			timestamp = Math.max(timestamp, getMinTimestampForNewMessage());
 			try {
 				switch (item.getRequestType()) {
 					case INTRODUCTION:
 						respondToIntroductionRequest(item.getSessionId(),
-								accept);
+								accept, timestamp);
 						break;
 					case FORUM:
 						respondToForumRequest(item.getSessionId(), accept);
@@ -1042,18 +1038,11 @@ public class ConversationActivity extends BriarActivity
 		ActivityCompat.startActivity(this, i, options.toBundle());
 	}
 
-	@Override
-	public void onAutoDeleteTimerNoticeClicked() {
-		ConversationSettingsDialog dialog =
-				ConversationSettingsDialog.newInstance(contactId);
-		dialog.show(getSupportFragmentManager(),
-				ConversationSettingsDialog.TAG);
-	}
-
 	@DatabaseExecutor
 	private void respondToIntroductionRequest(SessionId sessionId,
-			boolean accept) throws DbException {
+			boolean accept, long time) throws DbException {
-		introductionManager.respondToIntroduction(contactId, sessionId, accept);
+		introductionManager.respondToIntroduction(contactId, sessionId, time,
+				accept);
 	}
 
 	@DatabaseExecutor

briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationAdapter.java

@@ -13,8 +13,6 @@ import org.briarproject.briar.R;
 import org.briarproject.briar.android.util.BriarAdapter;
 import org.briarproject.briar.android.util.ItemReturningAdapter;
 
-import java.util.Collection;
-
 import androidx.annotation.LayoutRes;
 import androidx.annotation.Nullable;
 import androidx.recyclerview.selection.SelectionTracker;
@@ -22,14 +20,13 @@ import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView.RecycledViewPool;
 
 import static androidx.recyclerview.widget.RecyclerView.NO_POSITION;
-import static org.briarproject.briar.api.autodelete.AutoDeleteConstants.NO_AUTO_DELETE_TIMER;
 
 @NotNullByDefault
 class ConversationAdapter
 		extends BriarAdapter<ConversationItem, ConversationItemViewHolder>
 		implements ItemReturningAdapter<ConversationItem> {
 
-	private final ConversationListener listener;
+	private ConversationListener listener;
 	private final RecycledViewPool imageViewPool;
 	private final ImageItemDecoration imageItemDecoration;
 	@Nullable
@@ -68,20 +65,22 @@ class ConversationAdapter
 			@LayoutRes int type) {
 		View v = LayoutInflater.from(viewGroup.getContext()).inflate(
 				type, viewGroup, false);
-		if (type == R.layout.list_item_conversation_msg_in) {
+		switch (type) {
-			return new ConversationMessageViewHolder(v, listener, true,
+			case R.layout.list_item_conversation_msg_in:
-					imageViewPool, imageItemDecoration);
+				return new ConversationMessageViewHolder(v, listener, true,
-		} else if (type == R.layout.list_item_conversation_msg_out) {
+						imageViewPool, imageItemDecoration);
-			return new ConversationMessageViewHolder(v, listener, false,
+			case R.layout.list_item_conversation_msg_out:
-					imageViewPool, imageItemDecoration);
+				return new ConversationMessageViewHolder(v, listener, false,
-		} else if (type == R.layout.list_item_conversation_notice_in) {
+						imageViewPool, imageItemDecoration);
-			return new ConversationNoticeViewHolder(v, listener, true);
+			case R.layout.list_item_conversation_notice_in:
-		} else if (type == R.layout.list_item_conversation_notice_out) {
+				return new ConversationNoticeViewHolder(v, listener, true);
-			return new ConversationNoticeViewHolder(v, listener, false);
+			case R.layout.list_item_conversation_notice_out:
-		} else if (type == R.layout.list_item_conversation_request) {
+				return new ConversationNoticeViewHolder(v, listener, false);
-			return new ConversationRequestViewHolder(v, listener, true);
+			case R.layout.list_item_conversation_request:
+				return new ConversationRequestViewHolder(v, listener, true);
+			default:
+				throw new IllegalArgumentException("Unknown ConversationItem");
 		}
-		throw new IllegalArgumentException("Unknown ConversationItem");
 	}
 
 	@Override
@@ -108,49 +107,22 @@ class ConversationAdapter
 		return c1.equals(c2);
 	}
 
-	@Override
-	public void add(ConversationItem item) {
-		items.beginBatchedUpdates();
-		items.add(item);
-		updateTimersInBatch();
-		items.endBatchedUpdates();
-	}
-
-	@Override
-	public void addAll(Collection<ConversationItem> itemsToAdd) {
-		items.beginBatchedUpdates();
-		// there can be items already in the adapter
-		// SortedList takes care of duplicates and detecting changed items
-		items.addAll(itemsToAdd);
-		updateTimersInBatch();
-		items.endBatchedUpdates();
-	}
-
-	private void updateTimersInBatch() {
-		long lastTimerIncoming = NO_AUTO_DELETE_TIMER;
-		long lastTimerOutgoing = NO_AUTO_DELETE_TIMER;
-		for (int i = 0; i < items.size(); i++) {
-			ConversationItem c = items.get(i);
-			boolean itemChanged;
-			boolean timerChanged;
-			if (c.isIncoming()) {
-				timerChanged = lastTimerIncoming != c.getAutoDeleteTimer();
-				lastTimerIncoming = c.getAutoDeleteTimer();
-			} else {
-				timerChanged = lastTimerOutgoing != c.getAutoDeleteTimer();
-				lastTimerOutgoing = c.getAutoDeleteTimer();
-			}
-			itemChanged = c.setTimerNoticeVisible(timerChanged);
-			if (itemChanged) items.updateItemAt(i, c);
-		}
-	}
-
 	void setSelectionTracker(SelectionTracker<String> tracker) {
 		this.tracker = tracker;
 	}
 
+	@Nullable
+	ConversationItem getLastItem() {
+		if (items.size() > 0) {
+			return items.get(items.size() - 1);
+		} else {
+			return null;
+		}
+	}
+
 	SparseArray<ConversationItem> getOutgoingMessages() {
 		SparseArray<ConversationItem> messages = new SparseArray<>();
+
 		for (int i = 0; i < items.size(); i++) {
 			ConversationItem item = items.get(i);
 			if (!item.isIncoming()) {

briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationItem.java

@@ -9,7 +9,6 @@ import javax.annotation.Nullable;
 import javax.annotation.concurrent.NotThreadSafe;
 
 import androidx.annotation.LayoutRes;
-import androidx.lifecycle.LiveData;
 
 import static org.briarproject.bramble.util.StringUtils.toHexString;
 
@@ -23,25 +22,20 @@ abstract class ConversationItem {
 	protected String text;
 	private final MessageId id;
 	private final GroupId groupId;
-	private final long time, autoDeleteTimer;
+	private final long time;
 	private final boolean isIncoming;
-	private final LiveData<String> contactName;
+	private boolean read, sent, seen;
-	private boolean read, sent, seen, showTimerNotice;
 
-	ConversationItem(@LayoutRes int layoutRes, ConversationMessageHeader h,
+	ConversationItem(@LayoutRes int layoutRes, ConversationMessageHeader h) {
-			LiveData<String> contactName) {
 		this.layoutRes = layoutRes;
 		this.text = null;
 		this.id = h.getId();
 		this.groupId = h.getGroupId();
 		this.time = h.getTimestamp();
-		this.autoDeleteTimer = h.getAutoDeleteTimer();
 		this.read = h.isRead();
 		this.sent = h.isSent();
 		this.seen = h.isSeen();
 		this.isIncoming = !h.isLocal();
-		this.contactName = contactName;
-		this.showTimerNotice = false;
 	}
 
 	@LayoutRes
@@ -74,10 +68,6 @@ abstract class ConversationItem {
 		return time;
 	}
 
-	public long getAutoDeleteTimer() {
-		return autoDeleteTimer;
-	}
-
 	/**
 	 * Only useful for incoming messages.
 	 */
@@ -121,25 +111,4 @@ abstract class ConversationItem {
 		return isIncoming;
 	}
 
-	public LiveData<String> getContactName() {
-		return contactName;
-	}
-
-	/**
-	 * Set this to true when {@link #getAutoDeleteTimer()} has changed
-	 * since the last message from the same peer.
-	 *
-	 * @return true if the value was set, false if it was already set.
-	 */
-	boolean setTimerNoticeVisible(boolean visible) {
-		if (this.showTimerNotice != visible) {
-			this.showTimerNotice = visible;
-			return true;
-		}
-		return false;
-	}
-
-	boolean isTimerNoticeVisible() {
-		return showTimerNotice;
-	}
 }

briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationItemViewHolder.java

@@ -1,8 +1,6 @@
 package org.briarproject.briar.android.conversation;
 
-import android.content.Context;
 import android.view.View;
-import android.widget.ImageView;
 import android.widget.TextView;
 
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
@@ -14,11 +12,8 @@ import androidx.annotation.UiThread;
 import androidx.constraintlayout.widget.ConstraintLayout;
 import androidx.recyclerview.widget.RecyclerView.ViewHolder;
 
-import static android.view.View.GONE;
-import static android.view.View.VISIBLE;
 import static org.briarproject.bramble.util.StringUtils.trim;
 import static org.briarproject.briar.android.util.UiUtils.formatDate;
-import static org.briarproject.briar.api.autodelete.AutoDeleteConstants.NO_AUTO_DELETE_TIMER;
 
 @UiThread
 @NotNullByDefault
@@ -29,9 +24,8 @@ abstract class ConversationItemViewHolder extends ViewHolder {
 	protected final ConstraintLayout layout;
 	@Nullable
 	private final OutItemViewHolder outViewHolder;
-	private final TextView topNotice, text;
+	private final TextView text;
 	protected final TextView time;
-	protected final ImageView bomb;
 	@Nullable
 	private String itemKey = null;
 
@@ -39,13 +33,11 @@ abstract class ConversationItemViewHolder extends ViewHolder {
 			boolean isIncoming) {
 		super(v);
 		this.listener = listener;
-		outViewHolder = isIncoming ? null : new OutItemViewHolder(v);
+		this.outViewHolder = isIncoming ? null : new OutItemViewHolder(v);
 		root = v;
-		topNotice = v.findViewById(R.id.topNotice);
 		layout = v.findViewById(R.id.layout);
 		text = v.findViewById(R.id.text);
 		time = v.findViewById(R.id.time);
-		bomb = v.findViewById(R.id.bomb);
 	}
 
 	@CallSuper
@@ -53,8 +45,6 @@ abstract class ConversationItemViewHolder extends ViewHolder {
 		itemKey = item.getKey();
 		root.setActivated(selected);
 
-		setTopNotice(item);
-
 		if (item.getText() != null) {
 			text.setText(trim(item.getText()));
 		}
@@ -62,9 +52,6 @@ abstract class ConversationItemViewHolder extends ViewHolder {
 		long timestamp = item.getTime();
 		time.setText(formatDate(time.getContext(), timestamp));
 
-		boolean showBomb = item.getAutoDeleteTimer() != NO_AUTO_DELETE_TIMER;
-		bomb.setVisibility(showBomb ? VISIBLE : GONE);
-
 		if (outViewHolder != null) outViewHolder.bind(item);
 	}
 
@@ -77,31 +64,4 @@ abstract class ConversationItemViewHolder extends ViewHolder {
 		return itemKey;
 	}
 
-	private void setTopNotice(ConversationItem item) {
-		if (item.isTimerNoticeVisible()) {
-			Context ctx = itemView.getContext();
-			topNotice.setVisibility(VISIBLE);
-			boolean enabled = item.getAutoDeleteTimer() != NO_AUTO_DELETE_TIMER;
-			String tapToLearnMore = ctx.getString(R.string.tap_to_learn_more);
-			String text;
-			if (item.isIncoming()) {
-				String name = item.getContactName().getValue();
-				int strRes = enabled ?
-						R.string.auto_delete_msg_contact_enabled :
-						R.string.auto_delete_msg_contact_disabled;
-				text = ctx.getString(strRes, name, tapToLearnMore);
-			} else {
-				int strRes = enabled ?
-						R.string.auto_delete_msg_you_enabled :
-						R.string.auto_delete_msg_you_disabled;
-				text = ctx.getString(strRes, tapToLearnMore);
-			}
-			topNotice.setText(text);
-			topNotice.setOnClickListener(
-					v -> listener.onAutoDeleteTimerNoticeClicked());
-		} else {
-			topNotice.setVisibility(GONE);
-		}
-	}
-
 }

briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationListener.java

@@ -18,6 +18,4 @@ interface ConversationListener {
 	void onAttachmentClicked(View view, ConversationMessageItem messageItem,
 			AttachmentItem attachmentItem);
 
-	void onAutoDeleteTimerNoticeClicked();
-
 }

briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationMessageItem.java

@@ -10,7 +10,6 @@ import javax.annotation.concurrent.NotThreadSafe;
 
 import androidx.annotation.LayoutRes;
 import androidx.annotation.UiThread;
-import androidx.lifecycle.LiveData;
 
 @NotThreadSafe
 @NotNullByDefault
@@ -19,8 +18,8 @@ class ConversationMessageItem extends ConversationItem {
 	private final List<AttachmentItem> attachments;
 
 	ConversationMessageItem(@LayoutRes int layoutRes, PrivateMessageHeader h,
-			LiveData<String> contactName, List<AttachmentItem> attachments) {
+			List<AttachmentItem> attachments) {
-		super(layoutRes, h, contactName);
+		super(layoutRes, h);
 		this.attachments = attachments;
 	}
 

briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationMessageViewHolder.java

@@ -1,6 +1,5 @@
 package org.briarproject.briar.android.conversation;
 
-import android.content.res.ColorStateList;
 import android.view.View;
 import android.view.ViewGroup;
 
@@ -15,7 +14,6 @@ import androidx.recyclerview.widget.RecyclerView.RecycledViewPool;
 
 import static androidx.constraintlayout.widget.ConstraintSet.WRAP_CONTENT;
 import static androidx.core.content.ContextCompat.getColor;
-import static androidx.core.widget.ImageViewCompat.setImageTintList;
 
 @UiThread
 @NotNullByDefault
@@ -86,7 +84,6 @@ class ConversationMessageViewHolder extends ConversationItemViewHolder {
 		if (item.getText() == null) {
 			statusLayout.setBackgroundResource(R.drawable.msg_status_bubble);
 			time.setTextColor(timeColorBubble);
-			setImageTintList(bomb, ColorStateList.valueOf(timeColorBubble));
 			constraintSet = imageConstraints;
 		} else {
 			resetStatusLayoutForText();
@@ -114,7 +111,6 @@ class ConversationMessageViewHolder extends ConversationItemViewHolder {
 		// also reset padding (the background drawable defines some)
 		statusLayout.setPadding(0, 0, 0, 0);
 		time.setTextColor(timeColor);
-		setImageTintList(bomb, ColorStateList.valueOf(timeColor));
 	}
 
 }

briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationNoticeItem.java

@@ -8,7 +8,6 @@ import javax.annotation.Nullable;
 import javax.annotation.concurrent.NotThreadSafe;
 
 import androidx.annotation.LayoutRes;
-import androidx.lifecycle.LiveData;
 
 @NotThreadSafe
 @NotNullByDefault
@@ -18,15 +17,15 @@ class ConversationNoticeItem extends ConversationItem {
 	private final String msgText;
 
 	ConversationNoticeItem(@LayoutRes int layoutRes, String text,
-			LiveData<String> contactName, ConversationRequest<?> r) {
+			ConversationRequest r) {
-		super(layoutRes, r, contactName);
+		super(layoutRes, r);
 		this.text = text;
 		this.msgText = r.getText();
 	}
 
 	ConversationNoticeItem(@LayoutRes int layoutRes, String text,
-			LiveData<String> contactName, ConversationResponse r) {
+			ConversationResponse r) {
-		super(layoutRes, r, contactName);
+		super(layoutRes, r);
 		this.text = text;
 		this.msgText = null;
 	}

briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationRequestItem.java

@@ -11,7 +11,6 @@ import javax.annotation.Nullable;
 import javax.annotation.concurrent.NotThreadSafe;
 
 import androidx.annotation.LayoutRes;
-import androidx.lifecycle.LiveData;
 
 @NotThreadSafe
 @NotNullByDefault
@@ -27,15 +26,14 @@ class ConversationRequestItem extends ConversationNoticeItem {
 	private boolean answered;
 
 	ConversationRequestItem(@LayoutRes int layoutRes, String text,
-			LiveData<String> contactName, RequestType type,
+			RequestType type, ConversationRequest r) {
-			ConversationRequest<?> r) {
+		super(layoutRes, text, r);
-		super(layoutRes, text, contactName, r);
 		this.requestType = type;
 		this.sessionId = r.getSessionId();
 		this.answered = r.wasAnswered();
 		if (r instanceof InvitationRequest) {
 			this.requestedGroupId = ((Shareable) r.getNameable()).getId();
-			this.canBeOpened = ((InvitationRequest<?>) r).canBeOpened();
+			this.canBeOpened = ((InvitationRequest) r).canBeOpened();
 		} else {
 			this.requestedGroupId = null;
 			this.canBeOpened = false;

briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationSettingsDialog.java

@@ -1,122 +0,0 @@
-package org.briarproject.briar.android.conversation;
-
-import android.content.Context;
-import android.os.Bundle;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.TextView;
-
-import org.briarproject.bramble.api.contact.ContactId;
-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.fragment.BaseFragment;
-
-import java.util.logging.Logger;
-
-import javax.inject.Inject;
-
-import androidx.annotation.Nullable;
-import androidx.appcompat.widget.SwitchCompat;
-import androidx.appcompat.widget.Toolbar;
-import androidx.fragment.app.DialogFragment;
-import androidx.fragment.app.FragmentActivity;
-import androidx.lifecycle.ViewModelProvider;
-
-import static org.briarproject.briar.android.conversation.ConversationActivity.CONTACT_ID;
-import static org.briarproject.briar.api.autodelete.AutoDeleteConstants.NO_AUTO_DELETE_TIMER;
-
-@MethodsNotNullByDefault
-@ParametersNotNullByDefault
-public class ConversationSettingsDialog extends DialogFragment {
-
-	final static String TAG = ConversationSettingsDialog.class.getName();
-
-	private static final Logger LOG = Logger.getLogger(TAG);
-
-	@Inject
-	ViewModelProvider.Factory viewModelFactory;
-
-	private ConversationViewModel viewModel;
-
-	static ConversationSettingsDialog newInstance(ContactId contactId) {
-		Bundle args = new Bundle();
-		args.putInt(CONTACT_ID, contactId.getInt());
-		ConversationSettingsDialog dialog = new ConversationSettingsDialog();
-		dialog.setArguments(args);
-		return dialog;
-	}
-
-	@Override
-	public void onAttach(Context context) {
-		super.onAttach(context);
-		injectFragment(((BaseFragment.BaseFragmentListener) context)
-				.getActivityComponent());
-	}
-
-	public void injectFragment(ActivityComponent component) {
-		component.inject(this);
-		viewModel = new ViewModelProvider(requireActivity(), viewModelFactory)
-				.get(ConversationViewModel.class);
-	}
-
-	@Override
-	public void onCreate(@Nullable Bundle savedInstanceState) {
-		super.onCreate(savedInstanceState);
-		setStyle(DialogFragment.STYLE_NO_FRAME,
-				R.style.BriarFullScreenDialogTheme);
-	}
-
-	@Nullable
-	@Override
-	public View onCreateView(LayoutInflater inflater,
-			@Nullable ViewGroup container,
-			@Nullable Bundle savedInstanceState) {
-		View view = inflater.inflate(R.layout.fragment_conversation_settings,
-				container, false);
-
-		Bundle args = requireArguments();
-		int id = args.getInt(CONTACT_ID, -1);
-		if (id == -1) throw new IllegalStateException();
-		ContactId contactId = new ContactId(id);
-
-		FragmentActivity activity = requireActivity();
-		viewModel = new ViewModelProvider(activity, viewModelFactory)
-				.get(ConversationViewModel.class);
-		viewModel.setContactId(contactId);
-
-		Toolbar toolbar = view.findViewById(R.id.toolbar);
-		toolbar.setNavigationOnClickListener(v -> dismiss());
-
-		SwitchCompat switchDisappearingMessages = view.findViewById(
-				R.id.switchDisappearingMessages);
-		switchDisappearingMessages.setOnCheckedChangeListener(
-				(button, value) -> viewModel.setAutoDeleteTimerEnabled(value));
-
-		TextView buttonLearnMore =
-				view.findViewById(R.id.buttonLearnMore);
-		buttonLearnMore.setOnClickListener(e -> showLearnMoreDialog());
-
-		viewModel.getAutoDeleteTimer()
-				.observe(getViewLifecycleOwner(), timer -> {
-					LOG.info("Received auto delete timer: " + timer);
-					boolean disappearingMessages =
-							timer != NO_AUTO_DELETE_TIMER;
-					switchDisappearingMessages
-							.setChecked(disappearingMessages);
-					switchDisappearingMessages.setEnabled(true);
-				});
-
-		return view;
-	}
-
-	private void showLearnMoreDialog() {
-		ConversationSettingsLearnMoreDialog
-				dialog = new ConversationSettingsLearnMoreDialog();
-		dialog.show(getChildFragmentManager(),
-				ConversationSettingsLearnMoreDialog.TAG);
-	}
-
-}

briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationSettingsLearnMoreDialog.java

@@ -1,43 +0,0 @@
-package org.briarproject.briar.android.conversation;
-
-import android.app.Dialog;
-import android.os.Bundle;
-import android.view.LayoutInflater;
-import android.view.View;
-
-import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
-import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
-import org.briarproject.briar.R;
-
-import androidx.annotation.Nullable;
-import androidx.appcompat.app.AlertDialog;
-import androidx.fragment.app.DialogFragment;
-import androidx.fragment.app.FragmentActivity;
-
-@MethodsNotNullByDefault
-@ParametersNotNullByDefault
-public class ConversationSettingsLearnMoreDialog extends DialogFragment {
-
-	final static String TAG =
-			ConversationSettingsLearnMoreDialog.class.getName();
-
-	@Override
-	public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
-		FragmentActivity activity = requireActivity();
-
-		AlertDialog.Builder builder = new AlertDialog.Builder(activity,
-				R.style.OnboardingDialogTheme);
-
-		LayoutInflater inflater = LayoutInflater.from(builder.getContext());
-		View view = inflater.inflate(
-				R.layout.fragment_conversation_settings_learn_more, null);
-		builder.setView(view);
-
-		builder.setTitle(R.string.disappearing_messages_title);
-		builder.setPositiveButton(R.string.ok, null);
-
-		return builder.create();
-	}
-
-
-}

briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationViewModel.java

@@ -10,7 +10,6 @@ import org.briarproject.bramble.api.contact.ContactManager;
 import org.briarproject.bramble.api.db.DatabaseExecutor;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.db.NoSuchContactException;
-import org.briarproject.bramble.api.db.Transaction;
 import org.briarproject.bramble.api.db.TransactionManager;
 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.event.EventBus;
@@ -29,22 +28,16 @@ import org.briarproject.briar.android.attachment.AttachmentResult;
 import org.briarproject.briar.android.attachment.AttachmentRetriever;
 import org.briarproject.briar.android.contact.ContactItem;
 import org.briarproject.briar.android.util.UiUtils;
-import org.briarproject.briar.android.view.TextSendController.SendState;
 import org.briarproject.briar.android.viewmodel.DbViewModel;
 import org.briarproject.briar.android.viewmodel.LiveEvent;
 import org.briarproject.briar.android.viewmodel.MutableLiveEvent;
 import org.briarproject.briar.api.attachment.AttachmentHeader;
-import org.briarproject.briar.api.autodelete.AutoDeleteManager;
-import org.briarproject.briar.api.autodelete.UnexpectedTimerException;
-import org.briarproject.briar.api.autodelete.event.AutoDeleteTimerMirroredEvent;
 import org.briarproject.briar.api.avatar.event.AvatarUpdatedEvent;
-import org.briarproject.briar.api.conversation.ConversationManager;
 import org.briarproject.briar.api.identity.AuthorInfo;
 import org.briarproject.briar.api.identity.AuthorManager;
 import org.briarproject.briar.api.messaging.MessagingManager;
 import org.briarproject.briar.api.messaging.PrivateMessage;
 import org.briarproject.briar.api.messaging.PrivateMessageFactory;
-import org.briarproject.briar.api.messaging.PrivateMessageFormat;
 import org.briarproject.briar.api.messaging.PrivateMessageHeader;
 import org.briarproject.briar.api.messaging.event.AttachmentReceivedEvent;
 
@@ -62,8 +55,6 @@ import androidx.lifecycle.MutableLiveData;
 
 import static androidx.lifecycle.Transformations.map;
 import static java.util.Objects.requireNonNull;
-import static java.util.concurrent.TimeUnit.DAYS;
-import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
 import static java.util.logging.Logger.getLogger;
 import static org.briarproject.bramble.util.LogUtils.logDuration;
@@ -71,12 +62,6 @@ import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.bramble.util.LogUtils.now;
 import static org.briarproject.briar.android.settings.SettingsFragment.SETTINGS_NAMESPACE;
 import static org.briarproject.briar.android.util.UiUtils.observeForeverOnce;
-import static org.briarproject.briar.android.view.TextSendController.SendState.ERROR;
-import static org.briarproject.briar.android.view.TextSendController.SendState.SENT;
-import static org.briarproject.briar.android.view.TextSendController.SendState.UNEXPECTED_TIMER;
-import static org.briarproject.briar.api.autodelete.AutoDeleteConstants.NO_AUTO_DELETE_TIMER;
-import static org.briarproject.briar.api.messaging.PrivateMessageFormat.TEXT_IMAGES;
-import static org.briarproject.briar.api.messaging.PrivateMessageFormat.TEXT_ONLY;
 
 @NotNullByDefault
 public class ConversationViewModel extends DbViewModel
@@ -99,8 +84,6 @@ public class ConversationViewModel extends DbViewModel
 	private final PrivateMessageFactory privateMessageFactory;
 	private final AttachmentRetriever attachmentRetriever;
 	private final AttachmentCreator attachmentCreator;
-	private final AutoDeleteManager autoDeleteManager;
-	private final ConversationManager conversationManager;
 
 	@Nullable
 	private ContactId contactId = null;
@@ -109,7 +92,7 @@ public class ConversationViewModel extends DbViewModel
 	private final LiveData<String> contactName = map(contactItem, c ->
 			UiUtils.getContactDisplayName(c.getContact()));
 	private final LiveData<GroupId> messagingGroupId;
-	private final MutableLiveData<PrivateMessageFormat> privateMessageFormat =
+	private final MutableLiveData<Boolean> imageSupport =
 			new MutableLiveData<>();
 	private final MutableLiveEvent<Boolean> showImageOnboarding =
 			new MutableLiveEvent<>();
@@ -117,10 +100,8 @@ public class ConversationViewModel extends DbViewModel
 			new MutableLiveEvent<>();
 	private final MutableLiveData<Boolean> showIntroductionAction =
 			new MutableLiveData<>();
-	private final MutableLiveData<Long> autoDeleteTimer =
-			new MutableLiveData<>();
 	private final MutableLiveData<Boolean> contactDeleted =
-			new MutableLiveData<>(false);
+			new MutableLiveData<>();
 	private final MutableLiveEvent<PrivateMessageHeader> addedHeader =
 			new MutableLiveEvent<>();
 
@@ -137,9 +118,7 @@ public class ConversationViewModel extends DbViewModel
 			SettingsManager settingsManager,
 			PrivateMessageFactory privateMessageFactory,
 			AttachmentRetriever attachmentRetriever,
-			AttachmentCreator attachmentCreator,
+			AttachmentCreator attachmentCreator) {
-			AutoDeleteManager autoDeleteManager,
-			ConversationManager conversationManager) {
 		super(application, dbExecutor, lifecycleManager, db, androidExecutor);
 		this.db = db;
 		this.eventBus = eventBus;
@@ -150,10 +129,10 @@ public class ConversationViewModel extends DbViewModel
 		this.privateMessageFactory = privateMessageFactory;
 		this.attachmentRetriever = attachmentRetriever;
 		this.attachmentCreator = attachmentCreator;
-		this.autoDeleteManager = autoDeleteManager;
-		this.conversationManager = conversationManager;
 		messagingGroupId = map(contactItem, c ->
 				messagingManager.getContactGroup(c.getContact()).getId());
+		contactDeleted.setValue(false);
+
 		eventBus.addListener(this);
 	}
 
@@ -173,11 +152,6 @@ public class ConversationViewModel extends DbViewModel
 				runOnDbThread(() -> attachmentRetriever
 						.loadAttachmentItem(a.getMessageId()));
 			}
-		} else if (e instanceof AutoDeleteTimerMirroredEvent) {
-			AutoDeleteTimerMirroredEvent a = (AutoDeleteTimerMirroredEvent) e;
-			if (a.getContactId().equals(contactId)) {
-				autoDeleteTimer.postValue(a.getNewTimer());
-			}
 		} else if (e instanceof AvatarUpdatedEvent) {
 			AvatarUpdatedEvent a = (AvatarUpdatedEvent) e;
 			if (a.getContactId().equals(contactId)) {
@@ -227,11 +201,6 @@ public class ConversationViewModel extends DbViewModel
 				contactItem.postValue(new ContactItem(c, authorInfo));
 				logDuration(LOG, "Loading contact", start);
 				start = now();
-				long timer = db.transactionWithResult(true, txn ->
-						autoDeleteManager.getAutoDeleteTimer(txn, contactId));
-				autoDeleteTimer.postValue(timer);
-				logDuration(LOG, "Getting auto-delete timer", start);
-				start = now();
 				checkFeaturesAndOnboarding(contactId);
 				logDuration(LOG, "Checking for image support", start);
 			} catch (NoSuchContactException e) {
@@ -266,6 +235,20 @@ public class ConversationViewModel extends DbViewModel
 		});
 	}
 
+	@UiThread
+	void sendMessage(@Nullable String text,
+			List<AttachmentHeader> headers, long timestamp) {
+		// messagingGroupId is loaded with the contact
+		observeForeverOnce(messagingGroupId, groupId -> {
+			requireNonNull(groupId);
+			observeForeverOnce(imageSupport, hasImageSupport -> {
+				requireNonNull(hasImageSupport);
+				createMessage(groupId, text, headers, timestamp,
+						hasImageSupport);
+			});
+		});
+	}
+
 	@Override
 	@UiThread
 	public LiveData<AttachmentResult> storeAttachments(Collection<Uri> uris,
@@ -292,12 +275,10 @@ public class ConversationViewModel extends DbViewModel
 
 	@DatabaseExecutor
 	private void checkFeaturesAndOnboarding(ContactId c) throws DbException {
-		// check if images and auto-deletion are supported
+		// check if images are supported
-		PrivateMessageFormat format = db.transactionWithResult(true, txn ->
+		boolean imagesSupported = db.transactionWithResult(true, txn ->
-				messagingManager.getContactMessageFormat(txn, c));
+				messagingManager.contactSupportsImages(txn, c));
-		if (LOG.isLoggable(INFO))
+		imageSupport.postValue(imagesSupported);
-			LOG.info("PrivateMessageFormat loaded: " + format.name());
-		privateMessageFormat.postValue(format);
 
 		// check if introductions are supported
 		Collection<Contact> contacts = contactManager.getContacts();
@@ -306,7 +287,7 @@ public class ConversationViewModel extends DbViewModel
 
 		// we only show one onboarding dialog at a time
 		Settings settings = settingsManager.getSettings(SETTINGS_NAMESPACE);
-		if (format != TEXT_ONLY &&
+		if (imagesSupported &&
 				settings.getBoolean(SHOW_ONBOARDING_IMAGE, true)) {
 			onOnboardingShown(SHOW_ONBOARDING_IMAGE);
 			showImageOnboarding.postEvent(true);
@@ -325,82 +306,39 @@ public class ConversationViewModel extends DbViewModel
 	}
 
 	@UiThread
-	LiveData<SendState> sendMessage(@Nullable String text,
+	private void createMessage(GroupId groupId, @Nullable String text,
-			List<AttachmentHeader> headers, long expectedTimer) {
+			List<AttachmentHeader> headers, long timestamp,
-		MutableLiveData<SendState> liveData = new MutableLiveData<>();
+			boolean hasImageSupport) {
-		runOnDbThread(() -> {
-			try {
-				db.transaction(false, txn -> {
-					long start = now();
-					PrivateMessage m = createMessage(txn, text, headers,
-							expectedTimer);
-					messagingManager.addLocalMessage(txn, m);
-					logDuration(LOG, "Storing message", start);
-					Message message = m.getMessage();
-					PrivateMessageHeader h = new PrivateMessageHeader(
-							message.getId(), message.getGroupId(),
-							message.getTimestamp(), true, true, false, false,
-							m.hasText(), m.getAttachmentHeaders(),
-							m.getAutoDeleteTimer());
-					// TODO add text to cache when available here
-					MessageId id = message.getId();
-					txn.attach(() -> {
-						attachmentCreator.onAttachmentsSent(id);
-						liveData.setValue(SENT);
-						addedHeader.setEvent(h);
-					});
-				});
-			} catch (UnexpectedTimerException e) {
-				liveData.postValue(UNEXPECTED_TIMER);
-			} catch (DbException e) {
-				logException(LOG, WARNING, e);
-				liveData.postValue(ERROR);
-			}
-		});
-		return liveData;
-	}
-
-	private PrivateMessage createMessage(Transaction txn, @Nullable String text,
-			List<AttachmentHeader> headers, long expectedTimer)
-			throws DbException {
-		// Sending is only possible (setReady(true)) after loading all messages
-		// which happens after the contact has been loaded.
-		// privateMessageFormat is loaded together with contact
-		Contact contact = requireNonNull(contactItem.getValue()).getContact();
-		GroupId groupId = messagingManager.getContactGroup(contact).getId();
-		PrivateMessageFormat format =
-				requireNonNull(privateMessageFormat.getValue());
-		long timestamp = conversationManager
-				.getTimestampForOutgoingMessage(txn, requireNonNull(contactId));
 		try {
-			if (format == TEXT_ONLY) {
+			PrivateMessage pm;
-				return privateMessageFactory.createLegacyPrivateMessage(
+			if (hasImageSupport) {
-						groupId, timestamp, requireNonNull(text));
+				pm = privateMessageFactory.createPrivateMessage(groupId,
-			} else if (format == TEXT_IMAGES) {
-				return privateMessageFactory.createPrivateMessage(groupId,
 						timestamp, text, headers);
 			} else {
-				long timer = autoDeleteManager
+				pm = privateMessageFactory.createLegacyPrivateMessage(
-						.getAutoDeleteTimer(txn, contactId, timestamp);
+						groupId, timestamp, requireNonNull(text));
-				if (timer != expectedTimer)
-					throw new UnexpectedTimerException();
-				return privateMessageFactory.createPrivateMessage(groupId,
-						timestamp, text, headers, timer);
 			}
+			storeMessage(pm);
 		} catch (FormatException e) {
 			throw new AssertionError(e);
 		}
 	}
 
-	void setAutoDeleteTimerEnabled(boolean enabled) {
+	@UiThread
-		final long timer = enabled ? DAYS.toMillis(7) : NO_AUTO_DELETE_TIMER;
+	private void storeMessage(PrivateMessage m) {
-		// ContactId is set before menu gets inflated and UI interaction
+		attachmentCreator.onAttachmentsSent(m.getMessage().getId());
-		final ContactId c = requireNonNull(contactId);
 		runOnDbThread(() -> {
 			try {
-				db.transaction(false, txn ->
+				long start = now();
-						autoDeleteManager.setAutoDeleteTimer(txn, c, timer));
+				messagingManager.addLocalMessage(m);
-				autoDeleteTimer.postValue(timer);
+				logDuration(LOG, "Storing message", start);
+				Message message = m.getMessage();
+				PrivateMessageHeader h = new PrivateMessageHeader(
+						message.getId(), message.getGroupId(),
+						message.getTimestamp(), true, true, false, false,
+						m.hasText(), m.getAttachmentHeaders());
+				// TODO add text to cache when available here
+				addedHeader.postEvent(h);
 			} catch (DbException e) {
 				logException(LOG, WARNING, e);
 			}
@@ -419,8 +357,8 @@ public class ConversationViewModel extends DbViewModel
 		return contactName;
 	}
 
-	LiveData<PrivateMessageFormat> getPrivateMessageFormat() {
+	LiveData<Boolean> hasImageSupport() {
-		return privateMessageFormat;
+		return imageSupport;
 	}
 
 	LiveEvent<Boolean> showImageOnboarding() {
@@ -435,10 +373,6 @@ public class ConversationViewModel extends DbViewModel
 		return showIntroductionAction;
 	}
 
-	LiveData<Long> getAutoDeleteTimer() {
-		return autoDeleteTimer;
-	}
-
 	LiveData<Boolean> isContactDeleted() {
 		return contactDeleted;
 	}

briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationVisitor.java

@@ -60,12 +60,10 @@ class ConversationVisitor implements
 		}
 		if (h.isLocal()) {
 			item = new ConversationMessageItem(
-					R.layout.list_item_conversation_msg_out, h, contactName,
+					R.layout.list_item_conversation_msg_out, h, attachments);
-					attachments);
 		} else {
 			item = new ConversationMessageItem(
-					R.layout.list_item_conversation_msg_in, h, contactName,
+					R.layout.list_item_conversation_msg_in, h, attachments);
-					attachments);
 		}
 		if (h.hasText()) {
 			String text = textCache.getText(h.getId());
@@ -81,15 +79,13 @@ class ConversationVisitor implements
 			String text = ctx.getString(R.string.blogs_sharing_invitation_sent,
 					r.getName(), contactName.getValue());
 			return new ConversationNoticeItem(
-					R.layout.list_item_conversation_notice_out, text,
+					R.layout.list_item_conversation_notice_out, text, r);
-					contactName, r);
 		} else {
 			String text = ctx.getString(
 					R.string.blogs_sharing_invitation_received,
 					contactName.getValue(), r.getName());
 			return new ConversationRequestItem(
-					R.layout.list_item_conversation_request, text, contactName,
+					R.layout.list_item_conversation_request, text, BLOG, r);
-					BLOG, r);
 		}
 	}
 
@@ -108,8 +104,7 @@ class ConversationVisitor implements
 						contactName.getValue());
 			}
 			return new ConversationNoticeItem(
-					R.layout.list_item_conversation_notice_out, text,
+					R.layout.list_item_conversation_notice_out, text, r);
-					contactName, r);
 		} else {
 			String text;
 			if (r.wasAccepted()) {
@@ -122,8 +117,7 @@ class ConversationVisitor implements
 						contactName.getValue());
 			}
 			return new ConversationNoticeItem(
-					R.layout.list_item_conversation_notice_in, text,
+					R.layout.list_item_conversation_notice_in, text, r);
-					contactName, r);
 		}
 	}
 
@@ -134,15 +128,13 @@ class ConversationVisitor implements
 			String text = ctx.getString(R.string.forum_invitation_sent,
 					r.getName(), contactName.getValue());
 			return new ConversationNoticeItem(
-					R.layout.list_item_conversation_notice_out, text,
+					R.layout.list_item_conversation_notice_out, text, r);
-					contactName, r);
 		} else {
 			String text = ctx.getString(
 					R.string.forum_invitation_received,
 					contactName.getValue(), r.getName());
 			return new ConversationRequestItem(
-					R.layout.list_item_conversation_request, text, contactName,
+					R.layout.list_item_conversation_request, text, FORUM, r);
-					FORUM, r);
 		}
 	}
 
@@ -161,8 +153,7 @@ class ConversationVisitor implements
 						contactName.getValue());
 			}
 			return new ConversationNoticeItem(
-					R.layout.list_item_conversation_notice_out, text,
+					R.layout.list_item_conversation_notice_out, text, r);
-					contactName, r);
 		} else {
 			String text;
 			if (r.wasAccepted()) {
@@ -175,8 +166,7 @@ class ConversationVisitor implements
 						contactName.getValue());
 			}
 			return new ConversationNoticeItem(
-					R.layout.list_item_conversation_notice_in, text,
+					R.layout.list_item_conversation_notice_in, text, r);
-					contactName, r);
 		}
 	}
 
@@ -188,15 +178,13 @@ class ConversationVisitor implements
 					R.string.groups_invitations_invitation_sent,
 					contactName.getValue(), r.getName());
 			return new ConversationNoticeItem(
-					R.layout.list_item_conversation_notice_out, text,
+					R.layout.list_item_conversation_notice_out, text, r);
-					contactName, r);
 		} else {
 			String text = ctx.getString(
 					R.string.groups_invitations_invitation_received,
 					contactName.getValue(), r.getName());
 			return new ConversationRequestItem(
-					R.layout.list_item_conversation_request, text, contactName,
+					R.layout.list_item_conversation_request, text, GROUP, r);
-					GROUP, r);
 		}
 	}
 
@@ -215,8 +203,7 @@ class ConversationVisitor implements
 						contactName.getValue());
 			}
 			return new ConversationNoticeItem(
-					R.layout.list_item_conversation_notice_out, text,
+					R.layout.list_item_conversation_notice_out, text, r);
-					contactName, r);
 		} else {
 			String text;
 			if (r.wasAccepted()) {
@@ -229,8 +216,7 @@ class ConversationVisitor implements
 						contactName.getValue());
 			}
 			return new ConversationNoticeItem(
-					R.layout.list_item_conversation_notice_in, text,
+					R.layout.list_item_conversation_notice_in, text, r);
-					contactName, r);
 		}
 	}
 
@@ -241,8 +227,7 @@ class ConversationVisitor implements
 			String text = ctx.getString(R.string.introduction_request_sent,
 					contactName.getValue(), name);
 			return new ConversationNoticeItem(
-					R.layout.list_item_conversation_notice_out, text,
+					R.layout.list_item_conversation_notice_out, text, r);
-					contactName, r);
 		} else {
 			String text;
 			if (r.wasAnswered()) {
@@ -258,7 +243,7 @@ class ConversationVisitor implements
 						contactName.getValue(), name);
 			}
 			return new ConversationRequestItem(
-					R.layout.list_item_conversation_request, text, contactName,
+					R.layout.list_item_conversation_request, text,
 					INTRODUCTION, r);
 		}
 	}
@@ -283,8 +268,7 @@ class ConversationVisitor implements
 						introducedAuthor);
 			}
 			return new ConversationNoticeItem(
-					R.layout.list_item_conversation_notice_out, text,
+					R.layout.list_item_conversation_notice_out, text, r);
-					contactName, r);
 		} else {
 			String text;
 			if (r.wasAccepted()) {
@@ -304,8 +288,7 @@ class ConversationVisitor implements
 						introducedAuthor);
 			}
 			return new ConversationNoticeItem(
-					R.layout.list_item_conversation_notice_in, text,
+					R.layout.list_item_conversation_notice_in, text, r);
-					contactName, r);
 		}
 	}
 

briar-android/src/main/java/org/briarproject/briar/android/introduction/IntroductionMessageFragment.java

@@ -35,8 +35,6 @@ import javax.inject.Inject;
 
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.ActionBar;
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;
 import de.hdodenhof.circleimageview.CircleImageView;
 
 import static android.app.Activity.RESULT_OK;
@@ -48,8 +46,6 @@ import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.briar.android.util.UiUtils.getContactDisplayName;
 import static org.briarproject.briar.android.util.UiUtils.hideSoftKeyboard;
 import static org.briarproject.briar.android.view.AuthorView.setAvatar;
-import static org.briarproject.briar.android.view.TextSendController.SendState;
-import static org.briarproject.briar.android.view.TextSendController.SendState.SENT;
 import static org.briarproject.briar.api.introduction.IntroductionConstants.MAX_INTRODUCTION_TEXT_LENGTH;
 
 @MethodsNotNullByDefault
@@ -205,8 +201,8 @@ public class IntroductionMessageFragment extends BaseFragment
 	}
 
 	@Override
-	public LiveData<SendState> onSendClick(@Nullable String text,
+	public void onSendClick(@Nullable String text,
-			List<AttachmentHeader> headers, long expectedAutoDeleteTimer) {
+			List<AttachmentHeader> headers) {
 		// disable button to prevent accidental double invitations
 		ui.message.setReady(false);
 
@@ -216,7 +212,6 @@ public class IntroductionMessageFragment extends BaseFragment
 		hideSoftKeyboard(ui.message);
 		introductionActivity.setResult(RESULT_OK);
 		introductionActivity.supportFinishAfterTransition();
-		return new MutableLiveData<>(SENT);
 	}
 
 	private void makeIntroduction(Contact c1, Contact c2,
@@ -224,7 +219,8 @@ public class IntroductionMessageFragment extends BaseFragment
 		introductionActivity.runOnDbThread(() -> {
 			// actually make the introduction
 			try {
-				introductionManager.makeIntroduction(c1, c2, text);
+				long timestamp = System.currentTimeMillis();
+				introductionManager.makeIntroduction(c1, c2, text, timestamp);
 			} catch (DbException e) {
 				logException(LOG, WARNING, e);
 				introductionError();

briar-android/src/main/java/org/briarproject/briar/android/logging/BriefLogFormatter.java

@@ -4,6 +4,7 @@ import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
+import java.util.Collection;
 import java.util.Date;
 import java.util.TimeZone;
 import java.util.logging.Formatter;
@@ -17,6 +18,16 @@ import static java.util.Locale.US;
 @NotNullByDefault
 public class BriefLogFormatter extends Formatter {
 
+	public static String formatLog(Formatter formatter,
+			Collection<LogRecord> logRecords) {
+		StringBuilder sb = new StringBuilder();
+		for (LogRecord record : logRecords) {
+			String formatted = formatter.format(record);
+			sb.append(formatted).append('\n');
+		}
+		return sb.toString();
+	}
+
 	private final Object lock = new Object();
 	private final DateFormat dateFormat; // Locking: lock
 	private final Date date; // Locking: lock

briar-android/src/main/java/org/briarproject/briar/android/logging/CachingLogHandler.java

@@ -21,6 +21,10 @@ public class CachingLogHandler extends Handler {
 	// Locking: lock
 	private final Queue<LogRecord> recent = new LinkedList<>();
 
+	// package-private constructor
+	CachingLogHandler() {
+	}
+
 	@Override
 	public void publish(LogRecord record) {
 		synchronized (lock) {

briar-android/src/main/java/org/briarproject/briar/android/logging/LogDecrypter.java

@@ -0,0 +1,16 @@
+package org.briarproject.briar.android.logging;
+
+import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.bramble.util.AndroidUtils;
+
+import androidx.annotation.Nullable;
+
+@NotNullByDefault
+public interface LogDecrypter {
+	/**
+	 * Returns decrypted log records from {@link AndroidUtils#getLogcatFile}
+	 * or null if there was an error reading the logs.
+	 */
+	@Nullable
+	String decryptLogs(@Nullable byte[] logKey);
+}

briar-android/src/main/java/org/briarproject/briar/android/logging/LogDecrypterImpl.java

@@ -0,0 +1,61 @@
+package org.briarproject.briar.android.logging;
+
+import org.briarproject.bramble.api.crypto.SecretKey;
+import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.bramble.api.reporting.DevConfig;
+import org.briarproject.bramble.api.transport.StreamReaderFactory;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Scanner;
+import java.util.logging.Logger;
+
+import javax.inject.Inject;
+
+import androidx.annotation.Nullable;
+
+import static java.util.logging.Level.WARNING;
+import static java.util.logging.Logger.getLogger;
+import static org.briarproject.bramble.util.LogUtils.logException;
+
+@NotNullByDefault
+class LogDecrypterImpl implements LogDecrypter {
+
+	private static final Logger LOG =
+			getLogger(LogDecrypterImpl.class.getName());
+
+	private final DevConfig devConfig;
+	private final StreamReaderFactory streamReaderFactory;
+
+	@Inject
+	LogDecrypterImpl(DevConfig devConfig,
+			StreamReaderFactory streamReaderFactory) {
+		this.devConfig = devConfig;
+		this.streamReaderFactory = streamReaderFactory;
+	}
+
+	@Nullable
+	@Override
+	public String decryptLogs(@Nullable byte[] logKey) {
+		if (logKey == null) return null;
+		SecretKey key = new SecretKey(logKey);
+		File logFile = devConfig.getLogcatFile();
+		try (InputStream in = new FileInputStream(logFile)) {
+			InputStream reader =
+					streamReaderFactory.createLogStreamReader(in, key);
+			Scanner s = new Scanner(reader);
+			StringBuilder sb = new StringBuilder();
+			while (s.hasNextLine()) sb.append(s.nextLine()).append("\n");
+			s.close();
+			return sb.toString();
+		} catch (IOException e) {
+			logException(LOG, WARNING, e);
+			return null;
+		} finally {
+			//noinspection ResultOfMethodCallIgnored
+			logFile.delete();
+		}
+	}
+}

briar-android/src/main/java/org/briarproject/briar/android/logging/LogEncrypter.java

@@ -0,0 +1,16 @@
+package org.briarproject.briar.android.logging;
+
+import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.bramble.util.AndroidUtils;
+
+import androidx.annotation.Nullable;
+
+@NotNullByDefault
+public interface LogEncrypter {
+	/**
+	 * Writes encrypted log records to {@link AndroidUtils#getLogcatFile}
+	 * and returns the encryption key if everything went fine.
+	 */
+	@Nullable
+	byte[] encryptLogs();
+}

briar-android/src/main/java/org/briarproject/briar/android/logging/LogEncrypterImpl.java

@@ -0,0 +1,77 @@
+package org.briarproject.briar.android.logging;
+
+import org.briarproject.bramble.api.crypto.CryptoComponent;
+import org.briarproject.bramble.api.crypto.SecretKey;
+import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.bramble.api.reporting.DevConfig;
+import org.briarproject.bramble.api.transport.StreamWriter;
+import org.briarproject.bramble.api.transport.StreamWriterFactory;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.Writer;
+import java.util.logging.Formatter;
+import java.util.logging.LogRecord;
+import java.util.logging.Logger;
+
+import javax.inject.Inject;
+
+import androidx.annotation.Nullable;
+
+import static java.util.logging.Level.WARNING;
+import static java.util.logging.Logger.getLogger;
+import static org.briarproject.bramble.util.LogUtils.logException;
+
+@NotNullByDefault
+class LogEncrypterImpl implements LogEncrypter {
+
+	private static final Logger LOG =
+			getLogger(LogEncrypterImpl.class.getName());
+
+	private final DevConfig devConfig;
+	private final CachingLogHandler logHandler;
+	private final CryptoComponent crypto;
+	private final StreamWriterFactory streamWriterFactory;
+
+	@Inject
+	LogEncrypterImpl(DevConfig devConfig,
+			CachingLogHandler logHandler,
+			CryptoComponent crypto,
+			StreamWriterFactory streamWriterFactory) {
+		this.devConfig = devConfig;
+		this.logHandler = logHandler;
+		this.crypto = crypto;
+		this.streamWriterFactory = streamWriterFactory;
+	}
+
+	@Nullable
+	@Override
+	public byte[] encryptLogs() {
+		SecretKey logKey = crypto.generateSecretKey();
+		File logFile = devConfig.getLogcatFile();
+		try (OutputStream out = new FileOutputStream(logFile)) {
+			StreamWriter streamWriter =
+					streamWriterFactory.createLogStreamWriter(out, logKey);
+			Writer writer =
+					new OutputStreamWriter(streamWriter.getOutputStream());
+			writeLogString(writer);
+			writer.close();
+			return logKey.getBytes();
+		} catch (IOException e) {
+			logException(LOG, WARNING, e);
+			return null;
+		}
+	}
+
+	private void writeLogString(Writer writer) throws IOException {
+		Formatter formatter = new BriefLogFormatter();
+		for (LogRecord record : logHandler.getRecentLogRecords()) {
+			String formatted = formatter.format(record);
+			writer.append(formatted).append('\n');
+		}
+	}
+
+}

briar-android/src/main/java/org/briarproject/briar/android/logging/LoggingModule.java

@@ -0,0 +1,29 @@
+package org.briarproject.briar.android.logging;
+
+import javax.inject.Singleton;
+
+import dagger.Module;
+import dagger.Provides;
+
+@Module
+public class LoggingModule {
+
+	@Provides
+	@Singleton
+	CachingLogHandler provideCachingLogHandler() {
+		return new CachingLogHandler();
+	}
+
+	@Provides
+	@Singleton
+	LogEncrypter provideLogEncrypter(LogEncrypterImpl logEncrypter) {
+		return logEncrypter;
+	}
+
+	@Provides
+	@Singleton
+	LogDecrypter provideLogDecrypter(LogDecrypterImpl logDecrypter) {
+		return logDecrypter;
+	}
+
+}

briar-android/src/main/java/org/briarproject/briar/android/navdrawer/NavDrawerActivity.java

@@ -68,6 +68,7 @@ import static android.view.View.VISIBLE;
 import static androidx.core.view.GravityCompat.START;
 import static androidx.drawerlayout.widget.DrawerLayout.LOCK_MODE_LOCKED_CLOSED;
 import static androidx.fragment.app.FragmentManager.POP_BACK_STACK_INCLUSIVE;
+import static androidx.lifecycle.Lifecycle.State.STARTED;
 import static java.util.Objects.requireNonNull;
 import static java.util.logging.Logger.getLogger;
 import static org.briarproject.bramble.api.lifecycle.LifecycleManager.LifecycleState.RUNNING;
@@ -297,6 +298,12 @@ public class NavDrawerActivity extends BriarActivity implements
 				finish();
 			} else if (fm.getBackStackEntryCount() == 0
 					&& fm.findFragmentByTag(ContactListFragment.TAG) == null) {
+				// don't start fragments in the wrong part of lifecycle (#1904)
+				if (!getLifecycle().getCurrentState().isAtLeast(STARTED)) {
+					LOG.warning("Tried to start contacts fragment in state " +
+							getLifecycle().getCurrentState().name());
+					return;
+				}
 				/*
 				 * This makes sure that the first fragment (ContactListFragment) the
 				 * user sees is the same as the last fragment the user sees before

briar-android/src/main/java/org/briarproject/briar/android/privategroup/conversation/GroupActivity.java

@@ -79,9 +79,10 @@ public class GroupActivity extends
 
 		// start with group disabled and enable when not dissolved
 		setGroupEnabled(false);
-		viewModel.isDissolved().observeEvent(this, dissolved -> {
+		viewModel.isDissolved().observe(this, dissolved -> {
 			setGroupEnabled(!dissolved);
-			if (dissolved) onGroupDissolved();
+			// only show dialog when no prior state
+			if (dissolved && state == null) onGroupDissolved();
 		});
 	}
 
@@ -153,7 +154,7 @@ public class GroupActivity extends
 
 	@Override
 	public void onReplyClick(GroupMessageItem item) {
-		Boolean isDissolved = viewModel.isDissolved().getLastValue();
+		Boolean isDissolved = viewModel.isDissolved().getValue();
 		if (isDissolved != null && !isDissolved) super.onReplyClick(item);
 	}
 

briar-android/src/main/java/org/briarproject/briar/android/privategroup/conversation/GroupViewModel.java

@@ -22,8 +22,6 @@ import org.briarproject.bramble.api.system.AndroidExecutor;
 import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.briar.android.sharing.SharingController;
 import org.briarproject.briar.android.threaded.ThreadListViewModel;
-import org.briarproject.briar.android.viewmodel.LiveEvent;
-import org.briarproject.briar.android.viewmodel.MutableLiveEvent;
 import org.briarproject.briar.api.android.AndroidNotificationManager;
 import org.briarproject.briar.api.client.MessageTracker;
 import org.briarproject.briar.api.client.MessageTracker.GroupCount;
@@ -71,8 +69,8 @@ class GroupViewModel extends ThreadListViewModel<GroupMessageItem> {
 	private final MutableLiveData<PrivateGroup> privateGroup =
 			new MutableLiveData<>();
 	private final MutableLiveData<Boolean> isCreator = new MutableLiveData<>();
-	private final MutableLiveEvent<Boolean> isDissolved =
+	private final MutableLiveData<Boolean> isDissolved =
-			new MutableLiveEvent<>();
+			new MutableLiveData<>();
 
 	@Inject
 	GroupViewModel(Application application,
@@ -129,7 +127,7 @@ class GroupViewModel extends ThreadListViewModel<GroupMessageItem> {
 		} else if (e instanceof GroupDissolvedEvent) {
 			GroupDissolvedEvent g = (GroupDissolvedEvent) e;
 			if (g.getGroupId().equals(groupId)) {
-				isDissolved.setEvent(true);
+				isDissolved.setValue(true);
 			}
 		} else {
 			super.eventOccurred(e);
@@ -164,7 +162,7 @@ class GroupViewModel extends ThreadListViewModel<GroupMessageItem> {
 		loadList(txn -> {
 			// check first if group is dissolved
 			isDissolved
-					.postEvent(privateGroupManager.isDissolved(txn, groupId));
+					.postValue(privateGroupManager.isDissolved(txn, groupId));
 			// now continue to load the items
 			long start = now();
 			List<GroupMessageHeader> headers =
@@ -282,7 +280,7 @@ class GroupViewModel extends ThreadListViewModel<GroupMessageItem> {
 		return isCreator;
 	}
 
-	LiveEvent<Boolean> isDissolved() {
+	LiveData<Boolean> isDissolved() {
 		return isDissolved;
 	}
 

briar-android/src/main/java/org/briarproject/briar/android/privategroup/creation/CreateGroupControllerImpl.java

@@ -7,8 +7,6 @@ import org.briarproject.bramble.api.crypto.CryptoExecutor;
 import org.briarproject.bramble.api.db.DatabaseExecutor;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.db.NoSuchContactException;
-import org.briarproject.bramble.api.db.Transaction;
-import org.briarproject.bramble.api.db.TransactionManager;
 import org.briarproject.bramble.api.identity.IdentityManager;
 import org.briarproject.bramble.api.identity.LocalAuthor;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
@@ -17,8 +15,6 @@ import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.briar.android.contactselection.ContactSelectorControllerImpl;
 import org.briarproject.briar.android.controller.handler.ResultExceptionHandler;
-import org.briarproject.briar.api.autodelete.AutoDeleteManager;
-import org.briarproject.briar.api.conversation.ConversationManager;
 import org.briarproject.briar.api.identity.AuthorManager;
 import org.briarproject.briar.api.privategroup.GroupMessage;
 import org.briarproject.briar.api.privategroup.GroupMessageFactory;
@@ -40,8 +36,6 @@ import javax.inject.Inject;
 import androidx.annotation.Nullable;
 
 import static java.util.logging.Level.WARNING;
-import static java.util.logging.Logger.getLogger;
-import static org.briarproject.bramble.api.nullsafety.NullSafety.requireNonNull;
 import static org.briarproject.bramble.util.LogUtils.logException;
 
 @Immutable
@@ -50,12 +44,9 @@ class CreateGroupControllerImpl extends ContactSelectorControllerImpl
 		implements CreateGroupController {
 
 	private static final Logger LOG =
-			getLogger(CreateGroupControllerImpl.class.getName());
+			Logger.getLogger(CreateGroupControllerImpl.class.getName());
 
 	private final Executor cryptoExecutor;
-	private final TransactionManager db;
-	private final AutoDeleteManager autoDeleteManager;
-	private final ConversationManager conversationManager;
 	private final ContactManager contactManager;
 	private final IdentityManager identityManager;
 	private final PrivateGroupFactory groupFactory;
@@ -66,27 +57,17 @@ class CreateGroupControllerImpl extends ContactSelectorControllerImpl
 	private final Clock clock;
 
 	@Inject
-	CreateGroupControllerImpl(
+	CreateGroupControllerImpl(@DatabaseExecutor Executor dbExecutor,
-			@DatabaseExecutor Executor dbExecutor,
 			@CryptoExecutor Executor cryptoExecutor,
-			TransactionManager db,
+			LifecycleManager lifecycleManager, ContactManager contactManager,
-			AutoDeleteManager autoDeleteManager,
+			AuthorManager authorManager, IdentityManager identityManager,
-			ConversationManager conversationManager,
-			LifecycleManager lifecycleManager,
-			ContactManager contactManager,
-			AuthorManager authorManager,
-			IdentityManager identityManager,
 			PrivateGroupFactory groupFactory,
 			GroupMessageFactory groupMessageFactory,
 			PrivateGroupManager groupManager,
 			GroupInvitationFactory groupInvitationFactory,
-			GroupInvitationManager groupInvitationManager,
+			GroupInvitationManager groupInvitationManager, Clock clock) {
-			Clock clock) {
 		super(dbExecutor, lifecycleManager, contactManager, authorManager);
 		this.cryptoExecutor = cryptoExecutor;
-		this.db = db;
-		this.autoDeleteManager = autoDeleteManager;
-		this.conversationManager = conversationManager;
 		this.contactManager = contactManager;
 		this.identityManager = identityManager;
 		this.groupFactory = groupFactory;
@@ -150,14 +131,16 @@ class CreateGroupControllerImpl extends ContactSelectorControllerImpl
 			ResultExceptionHandler<Void, DbException> handler) {
 		runOnDbThread(() -> {
 			try {
-				db.transaction(false, txn -> {
+				LocalAuthor localAuthor = identityManager.getLocalAuthor();
-					LocalAuthor localAuthor =
+				List<Contact> contacts = new ArrayList<>();
-							identityManager.getLocalAuthor(txn);
+				for (ContactId c : contactIds) {
-					List<InvitationContext> contexts =
+					try {
-							createInvitationContexts(txn, contactIds);
+						contacts.add(contactManager.getContact(c));
-					txn.attach(() -> signInvitations(g, localAuthor, contexts,
+					} catch (NoSuchContactException e) {
-							text, handler));
+						// Continue
-				});
+					}
+				}
+				signInvitations(g, localAuthor, contacts, text, handler);
 			} catch (DbException e) {
 				logException(LOG, WARNING, e);
 				handler.onException(e);
@@ -165,32 +148,17 @@ class CreateGroupControllerImpl extends ContactSelectorControllerImpl
 		});
 	}
 
-	private List<InvitationContext> createInvitationContexts(Transaction txn,
-			Collection<ContactId> contactIds) throws DbException {
-		List<InvitationContext> contexts = new ArrayList<>();
-		for (ContactId c : contactIds) {
-			try {
-				Contact contact = contactManager.getContact(txn, c);
-				long timestamp = conversationManager
-						.getTimestampForOutgoingMessage(txn, c);
-				long timer = autoDeleteManager.getAutoDeleteTimer(txn, c,
-						timestamp);
-				contexts.add(new InvitationContext(contact, timestamp, timer));
-			} catch (NoSuchContactException e) {
-				// Continue
-			}
-		}
-		return contexts;
-	}
-
 	private void signInvitations(GroupId g, LocalAuthor localAuthor,
-			List<InvitationContext> contexts, @Nullable String text,
+			Collection<Contact> contacts, @Nullable String text,
 			ResultExceptionHandler<Void, DbException> handler) {
 		cryptoExecutor.execute(() -> {
-			for (InvitationContext ctx : contexts) {
+			long timestamp = clock.currentTimeMillis();
-				ctx.signature = groupInvitationFactory.signInvitation(
+			List<InvitationContext> contexts = new ArrayList<>();
-						ctx.contact, g, ctx.timestamp,
+			for (Contact c : contacts) {
-						localAuthor.getPrivateKey());
+				byte[] signature = groupInvitationFactory.signInvitation(c, g,
+						timestamp, localAuthor.getPrivateKey());
+				contexts.add(new InvitationContext(c.getId(), timestamp,
+						signature));
 			}
 			sendInvitations(g, contexts, text, handler);
 		});
@@ -201,12 +169,11 @@ class CreateGroupControllerImpl extends ContactSelectorControllerImpl
 			ResultExceptionHandler<Void, DbException> handler) {
 		runOnDbThread(() -> {
 			try {
-				for (InvitationContext ctx : contexts) {
+				for (InvitationContext context : contexts) {
 					try {
 						groupInvitationManager.sendInvitation(g,
-								ctx.contact.getId(), text, ctx.timestamp,
+								context.contactId, text, context.timestamp,
-								requireNonNull(ctx.signature),
+								context.signature);
-								ctx.autoDeleteTimer);
 					} catch (NoSuchContactException e) {
 						// Continue
 					}
@@ -221,16 +188,15 @@ class CreateGroupControllerImpl extends ContactSelectorControllerImpl
 
 	private static class InvitationContext {
 
-		private final Contact contact;
+		private final ContactId contactId;
-		private final long timestamp, autoDeleteTimer;
+		private final long timestamp;
-		@Nullable
+		private final byte[] signature;
-		private byte[] signature = null;
 
-		private InvitationContext(Contact contact, long timestamp,
+		private InvitationContext(ContactId contactId, long timestamp,
-				long autoDeleteTimer) {
+				byte[] signature) {
-			this.contact = contact;
+			this.contactId = contactId;
 			this.timestamp = timestamp;
-			this.autoDeleteTimer = autoDeleteTimer;
+			this.signature = signature;
 		}
 	}
 }

briar-android/src/main/java/org/briarproject/briar/android/reporting/BriarExceptionHandler.java

@@ -1,29 +1,40 @@
 package org.briarproject.briar.android.reporting;
 
-import android.content.Context;
+import android.app.Application;
 import android.os.Process;
 
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.briar.android.logging.LogEncrypter;
 
 import java.lang.Thread.UncaughtExceptionHandler;
 
+import javax.inject.Inject;
+
 import static org.briarproject.briar.android.util.UiUtils.startDevReportActivity;
 
 @NotNullByDefault
-public class BriarExceptionHandler implements UncaughtExceptionHandler {
+class BriarExceptionHandler implements UncaughtExceptionHandler {
 
-	private final Context ctx;
+	private final Application app;
+	private final LogEncrypter logEncrypter;
 	private final long appStartTime;
 
-	public BriarExceptionHandler(Context ctx) {
+	@Inject
-		this.ctx = ctx;
+	BriarExceptionHandler(Application app, LogEncrypter logEncrypter) {
-		this.appStartTime = System.currentTimeMillis();
+		this.app = app;
+		this.logEncrypter = logEncrypter;
+		appStartTime = System.currentTimeMillis();
 	}
 
 	@Override
 	public void uncaughtException(Thread t, Throwable e) {
+		// encrypt logs to disk before handing over to new process
+		// the intent has limited space, so we can't reliably store them there.
+		byte[] logKey = logEncrypter.encryptLogs();
+
 		// activity runs in its own process, so we can kill the old one
-		startDevReportActivity(ctx, CrashReportActivity.class, e, appStartTime);
+		startDevReportActivity(app.getApplicationContext(),
+				CrashReportActivity.class, e, appStartTime, logKey);
 		Process.killProcess(Process.myPid());
 		System.exit(10);
 	}

briar-android/src/main/java/org/briarproject/briar/android/reporting/BriarReportCollector.java

@@ -25,8 +25,6 @@ import org.briarproject.bramble.api.Pair;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.briar.BuildConfig;
 import org.briarproject.briar.R;
-import org.briarproject.briar.android.BriarApplication;
-import org.briarproject.briar.android.logging.BriefLogFormatter;
 import org.briarproject.briar.android.reporting.ReportData.MultiReportInfo;
 import org.briarproject.briar.android.reporting.ReportData.ReportItem;
 import org.briarproject.briar.android.reporting.ReportData.SingleReportInfo;
@@ -41,8 +39,6 @@ import java.net.InetAddress;
 import java.net.UnknownHostException;
 import java.text.SimpleDateFormat;
 import java.util.Date;
-import java.util.logging.Formatter;
-import java.util.logging.LogRecord;
 
 import javax.annotation.concurrent.Immutable;
 
@@ -74,8 +70,8 @@ class BriarReportCollector {
 		this.ctx = ctx;
 	}
 
-	public ReportData collectReportData(@Nullable Throwable t,
+	ReportData collectReportData(@Nullable Throwable t, long appStartTime,
-			long appStartTime) {
+			String logs) {
 		ReportData reportData = new ReportData()
 				.add(getBasicInfo(t))
 				.add(getDeviceInfo());
@@ -86,7 +82,7 @@ class BriarReportCollector {
 				.add(getStorage())
 				.add(getConnectivity())
 				.add(getBuildConfig())
-				.add(getLogcat())
+				.add(getLogcat(logs))
 				.add(getDeviceFeatures());
 	}
 
@@ -313,15 +309,8 @@ class BriarReportCollector {
 				buildConfig);
 	}
 
-	private ReportItem getLogcat() {
+	private ReportItem getLogcat(String logs) {
-		BriarApplication app = (BriarApplication) ctx.getApplicationContext();
+		return new ReportItem("Logcat", R.string.dev_report_logcat, logs);
-		StringBuilder sb = new StringBuilder();
-		Formatter formatter = new BriefLogFormatter();
-		for (LogRecord record : app.getRecentLogRecords()) {
-			sb.append(formatter.format(record)).append('\n');
-		}
-		return new ReportItem("Logcat", R.string.dev_report_logcat,
-				sb.toString());
 	}
 
 	private ReportItem getDeviceFeatures() {

briar-android/src/main/java/org/briarproject/briar/android/reporting/CrashReportActivity.java

@@ -35,6 +35,7 @@ public class CrashReportActivity extends BaseActivity
 
 	public static final String EXTRA_THROWABLE = "throwable";
 	public static final String EXTRA_APP_START_TIME = "appStartTime";
+	public static final String EXTRA_APP_LOGCAT = "logcat";
 
 	@Inject
 	ViewModelProvider.Factory viewModelFactory;
@@ -56,7 +57,8 @@ public class CrashReportActivity extends BaseActivity
 		Intent intent = getIntent();
 		Throwable t = (Throwable) intent.getSerializableExtra(EXTRA_THROWABLE);
 		long appStartTime = intent.getLongExtra(EXTRA_APP_START_TIME, -1);
-		viewModel.init(t, appStartTime);
+		byte[] logKey = intent.getByteArrayExtra(EXTRA_APP_LOGCAT);
+		viewModel.init(t, appStartTime, logKey);
 		viewModel.getShowReport().observeEvent(this, show -> {
 			if (show) displayFragment(true);
 		});

briar-android/src/main/java/org/briarproject/briar/android/reporting/DevReportModule.java

@@ -15,4 +15,8 @@ public abstract class DevReportModule {
 	@ViewModelKey(ReportViewModel.class)
 	abstract ViewModel bindReportViewModel(ReportViewModel reportViewModel);
 
+	@Binds
+	abstract Thread.UncaughtExceptionHandler bindUncaughtExceptionHandler(
+			BriarExceptionHandler handler);
+
 }

briar-android/src/main/java/org/briarproject/briar/android/reporting/ReportViewModel.java

@@ -11,6 +11,9 @@ import org.briarproject.bramble.api.plugin.TorConstants;
 import org.briarproject.bramble.api.reporting.DevReporter;
 import org.briarproject.bramble.util.AndroidUtils;
 import org.briarproject.briar.R;
+import org.briarproject.briar.android.logging.BriefLogFormatter;
+import org.briarproject.briar.android.logging.CachingLogHandler;
+import org.briarproject.briar.android.logging.LogDecrypter;
 import org.briarproject.briar.android.reporting.ReportData.MultiReportInfo;
 import org.briarproject.briar.android.viewmodel.LiveEvent;
 import org.briarproject.briar.android.viewmodel.MutableLiveEvent;
@@ -19,6 +22,7 @@ import org.json.JSONException;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.util.UUID;
+import java.util.logging.Formatter;
 import java.util.logging.Logger;
 
 import javax.inject.Inject;
@@ -36,13 +40,16 @@ import static java.util.logging.Logger.getLogger;
 import static org.briarproject.bramble.api.plugin.Plugin.State.ACTIVE;
 import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.bramble.util.StringUtils.isNullOrEmpty;
+import static org.briarproject.briar.android.logging.BriefLogFormatter.formatLog;
 
 @NotNullByDefault
-public class ReportViewModel extends AndroidViewModel {
+class ReportViewModel extends AndroidViewModel {
 
 	private static final Logger LOG =
 			getLogger(ReportViewModel.class.getName());
 
+	private final CachingLogHandler logHandler;
+	private final LogDecrypter logDecrypter;
 	private final BriarReportCollector collector;
 	private final DevReporter reporter;
 	private final PluginManager pluginManager;
@@ -58,18 +65,39 @@ public class ReportViewModel extends AndroidViewModel {
 	private boolean isFeedback;
 
 	@Inject
-	public ReportViewModel(@NonNull Application application,
+	ReportViewModel(@NonNull Application application,
-			DevReporter reporter, PluginManager pluginManager) {
+			CachingLogHandler logHandler,
+			LogDecrypter logDecrypter,
+			DevReporter reporter,
+			PluginManager pluginManager) {
 		super(application);
-		this.collector = new BriarReportCollector(application);
+		collector = new BriarReportCollector(application);
+		this.logHandler = logHandler;
+		this.logDecrypter = logDecrypter;
 		this.reporter = reporter;
 		this.pluginManager = pluginManager;
 	}
 
-	void init(@Nullable Throwable t, long appStartTime) {
+	void init(@Nullable Throwable t, long appStartTime,
+			@Nullable byte[] logKey) {
 		isFeedback = t == null;
 		if (reportData.getValue() == null) new SingleShotAndroidExecutor(() -> {
-			ReportData data = collector.collectReportData(t, appStartTime);
+			String decryptedLogs;
+			if (isFeedback) {
+				Formatter formatter = new BriefLogFormatter();
+				decryptedLogs =
+						formatLog(formatter, logHandler.getRecentLogRecords());
+			} else {
+				decryptedLogs = logDecrypter.decryptLogs(logKey);
+				if (decryptedLogs == null) {
+					// error decrypting logs, get logs from this process
+					Formatter formatter = new BriefLogFormatter();
+					decryptedLogs = formatLog(formatter,
+							logHandler.getRecentLogRecords());
+				}
+			}
+			ReportData data =
+					collector.collectReportData(t, appStartTime, decryptedLogs);
 			reportData.postValue(data);
 		}).start();
 	}
@@ -110,8 +138,8 @@ public class ReportViewModel extends AndroidViewModel {
 	}
 
 	/**
-	 * The content of the report
+	 * The content of the report that will be loaded after
-	 * that will be loaded after {@link #init(Throwable, long)} was called.
+	 * {@link #init(Throwable, long, byte[])} was called.
 	 */
 	LiveData<ReportData> getReportData() {
 		return reportData;

briar-android/src/main/java/org/briarproject/briar/android/sharing/BaseMessageFragment.java

@@ -15,7 +15,6 @@ import org.briarproject.briar.android.fragment.BaseFragment;
 import org.briarproject.briar.android.view.LargeTextInputView;
 import org.briarproject.briar.android.view.TextSendController;
 import org.briarproject.briar.android.view.TextSendController.SendListener;
-import org.briarproject.briar.android.view.TextSendController.SendState;
 import org.briarproject.briar.api.attachment.AttachmentHeader;
 
 import java.util.List;
@@ -23,10 +22,6 @@ import java.util.List;
 import androidx.annotation.Nullable;
 import androidx.annotation.StringRes;
 import androidx.annotation.UiThread;
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;
-
-import static org.briarproject.briar.android.view.TextSendController.SendState.SENT;
 
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
@@ -84,14 +79,13 @@ public abstract class BaseMessageFragment extends BaseFragment
 	}
 
 	@Override
-	public LiveData<SendState> onSendClick(@Nullable String text,
+	public void onSendClick(@Nullable String text,
-			List<AttachmentHeader> headers, long expectedAutoDeleteTimer) {
+			List<AttachmentHeader> headers) {
 		// disable button to prevent accidental double actions
 		sendController.setReady(false);
 		message.hideSoftKeyboard();
 
 		listener.onButtonClick(text);
-		return new MutableLiveData<>(SENT);
 	}
 
 	@UiThread

briar-android/src/main/java/org/briarproject/briar/android/sharing/ShareBlogControllerImpl.java

@@ -10,9 +10,11 @@ import org.briarproject.bramble.api.db.NoSuchGroupException;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
+import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.briar.android.contactselection.ContactSelectorControllerImpl;
 import org.briarproject.briar.android.controller.handler.ExceptionHandler;
 import org.briarproject.briar.api.blog.BlogSharingManager;
+import org.briarproject.briar.api.conversation.ConversationManager;
 import org.briarproject.briar.api.identity.AuthorManager;
 
 import java.util.Collection;
@@ -24,7 +26,6 @@ import javax.annotation.concurrent.Immutable;
 import javax.inject.Inject;
 
 import static java.util.logging.Level.WARNING;
-import static java.util.logging.Logger.getLogger;
 import static org.briarproject.bramble.util.LogUtils.logException;
 
 @Immutable
@@ -33,17 +34,22 @@ class ShareBlogControllerImpl extends ContactSelectorControllerImpl
 		implements ShareBlogController {
 
 	private final static Logger LOG =
-			getLogger(ShareBlogControllerImpl.class.getName());
+			Logger.getLogger(ShareBlogControllerImpl.class.getName());
 
+	private final ConversationManager conversationManager;
 	private final BlogSharingManager blogSharingManager;
+	private final Clock clock;
 
 	@Inject
 	ShareBlogControllerImpl(@DatabaseExecutor Executor dbExecutor,
 			LifecycleManager lifecycleManager, ContactManager contactManager,
 			AuthorManager authorManager,
-			BlogSharingManager blogSharingManager) {
+			ConversationManager conversationManager,
+			BlogSharingManager blogSharingManager, Clock clock) {
 		super(dbExecutor, lifecycleManager, contactManager, authorManager);
+		this.conversationManager = conversationManager;
 		this.blogSharingManager = blogSharingManager;
+		this.clock = clock;
 	}
 
 	@Override
@@ -58,7 +64,10 @@ class ShareBlogControllerImpl extends ContactSelectorControllerImpl
 			try {
 				for (ContactId c : contacts) {
 					try {
-						blogSharingManager.sendInvitation(g, c, text);
+						long time = Math.max(clock.currentTimeMillis(),
+								conversationManager.getGroupCount(c)
+										.getLatestMsgTime() + 1);
+						blogSharingManager.sendInvitation(g, c, text, time);
 					} catch (NoSuchContactException | NoSuchGroupException e) {
 						logException(LOG, WARNING, e);
 					}

briar-android/src/main/java/org/briarproject/briar/android/sharing/ShareForumControllerImpl.java

@@ -10,8 +10,10 @@ import org.briarproject.bramble.api.db.NoSuchGroupException;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
+import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.briar.android.contactselection.ContactSelectorControllerImpl;
 import org.briarproject.briar.android.controller.handler.ExceptionHandler;
+import org.briarproject.briar.api.conversation.ConversationManager;
 import org.briarproject.briar.api.forum.ForumSharingManager;
 import org.briarproject.briar.api.identity.AuthorManager;
 
@@ -24,7 +26,6 @@ import javax.annotation.concurrent.Immutable;
 import javax.inject.Inject;
 
 import static java.util.logging.Level.WARNING;
-import static java.util.logging.Logger.getLogger;
 import static org.briarproject.bramble.util.LogUtils.logException;
 
 @Immutable
@@ -33,17 +34,22 @@ class ShareForumControllerImpl extends ContactSelectorControllerImpl
 		implements ShareForumController {
 
 	private final static Logger LOG =
-			getLogger(ShareForumControllerImpl.class.getName());
+			Logger.getLogger(ShareForumControllerImpl.class.getName());
 
+	private final ConversationManager conversationManager;
 	private final ForumSharingManager forumSharingManager;
+	private final Clock clock;
 
 	@Inject
 	ShareForumControllerImpl(@DatabaseExecutor Executor dbExecutor,
 			LifecycleManager lifecycleManager, ContactManager contactManager,
 			AuthorManager authorManager,
-			ForumSharingManager forumSharingManager) {
+			ConversationManager conversationManager,
+			ForumSharingManager forumSharingManager, Clock clock) {
 		super(dbExecutor, lifecycleManager, contactManager, authorManager);
+		this.conversationManager = conversationManager;
 		this.forumSharingManager = forumSharingManager;
+		this.clock = clock;
 	}
 
 	@Override
@@ -58,7 +64,10 @@ class ShareForumControllerImpl extends ContactSelectorControllerImpl
 			try {
 				for (ContactId c : contacts) {
 					try {
-						forumSharingManager.sendInvitation(g, c, text);
+						long time = Math.max(clock.currentTimeMillis(),
+								conversationManager.getGroupCount(c)
+										.getLatestMsgTime() + 1);
+						forumSharingManager.sendInvitation(g, c, text, time);
 					} catch (NoSuchContactException | NoSuchGroupException e) {
 						logException(LOG, WARNING, e);
 					}

briar-android/src/main/java/org/briarproject/briar/android/splash/ExpiredActivity.java

@@ -1,5 +1,6 @@
 package org.briarproject.briar.android.splash;
 
+import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
@@ -7,6 +8,7 @@ import android.view.View;
 import android.view.View.OnClickListener;
 
 import org.briarproject.briar.R;
+import org.briarproject.briar.android.Localizer;
 
 import androidx.appcompat.app.AppCompatActivity;
 
@@ -27,6 +29,13 @@ public class ExpiredActivity extends AppCompatActivity
 		findViewById(R.id.download_briar_button).setOnClickListener(this);
 	}
 
+	@Override
+	protected void attachBaseContext(Context base) {
+		super.attachBaseContext(
+				Localizer.getInstance().setLocale(base));
+		Localizer.getInstance().setLocale(this);
+	}
+
 	@Override
 	public void onClick(View v) {
 		Uri uri = Uri.parse("https://briarproject.org/download.html");

briar-android/src/main/java/org/briarproject/briar/android/threaded/ThreadListActivity.java

@@ -19,7 +19,6 @@ import org.briarproject.briar.android.view.BriarRecyclerView;
 import org.briarproject.briar.android.view.TextInputView;
 import org.briarproject.briar.android.view.TextSendController;
 import org.briarproject.briar.android.view.TextSendController.SendListener;
-import org.briarproject.briar.android.view.TextSendController.SendState;
 import org.briarproject.briar.android.view.UnreadMessageButton;
 import org.briarproject.briar.api.attachment.AttachmentHeader;
 
@@ -30,13 +29,10 @@ import javax.annotation.Nullable;
 import androidx.annotation.CallSuper;
 import androidx.annotation.StringRes;
 import androidx.appcompat.app.ActionBar;
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;
 import androidx.recyclerview.widget.LinearLayoutManager;
 
 import static androidx.recyclerview.widget.RecyclerView.NO_POSITION;
 import static org.briarproject.bramble.util.StringUtils.isNullOrEmpty;
-import static org.briarproject.briar.android.view.TextSendController.SendState.SENT;
 
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
@@ -235,8 +231,8 @@ public abstract class ThreadListActivity<I extends ThreadItem, A extends ThreadI
 	}
 
 	@Override
-	public LiveData<SendState> onSendClick(@Nullable String text,
+	public void onSendClick(@Nullable String text,
-			List<AttachmentHeader> headers, long expectedAutoDeleteTimer) {
+			List<AttachmentHeader> headers) {
 		if (isNullOrEmpty(text)) throw new AssertionError();
 
 		MessageId replyId = getViewModel().getReplyId();
@@ -245,7 +241,6 @@ public abstract class ThreadListActivity<I extends ThreadItem, A extends ThreadI
 		textInput.clearText();
 		getViewModel().setReplyId(null);
 		updateTextInput();
-		return new MutableLiveData<>(SENT);
 	}
 
 	protected abstract int getMaxTextLength();

briar-android/src/main/java/org/briarproject/briar/android/threaded/ThreadListViewModel.java

@@ -197,6 +197,10 @@ public abstract class ThreadListViewModel<I extends ThreadItem>
 	 */
 	@UiThread
 	protected void addItem(I item, boolean scrollToItem) {
+		// If items haven't loaded, we need to wait until they have.
+		// Since this was a R/W DB transaction, the load will pick up this item.
+		if (items.getValue() == null) return;
+
 		messageTree.add(item);
 		if (scrollToItem) this.scrollToItem.set(item.getId());
 		items.setValue(new LiveResult<>(messageTree.depthFirstOrder()));

briar-android/src/main/java/org/briarproject/briar/android/util/UiUtils.java

@@ -97,6 +97,7 @@ import static java.util.concurrent.TimeUnit.DAYS;
 import static org.briarproject.bramble.util.AndroidUtils.getSupportedImageContentTypes;
 import static org.briarproject.briar.BuildConfig.APPLICATION_ID;
 import static org.briarproject.briar.android.TestingConstants.EXPIRY_DATE;
+import static org.briarproject.briar.android.reporting.CrashReportActivity.EXTRA_APP_LOGCAT;
 import static org.briarproject.briar.android.reporting.CrashReportActivity.EXTRA_APP_START_TIME;
 import static org.briarproject.briar.android.reporting.CrashReportActivity.EXTRA_THROWABLE;
 
@@ -357,16 +358,17 @@ public class UiUtils {
 	}
 
 	public static void triggerFeedback(Context ctx) {
-		startDevReportActivity(ctx, FeedbackActivity.class, null, null);
+		startDevReportActivity(ctx, FeedbackActivity.class, null, null, null);
 	}
 
 	public static void startDevReportActivity(Context ctx,
 			Class<? extends FragmentActivity> activity, @Nullable Throwable t,
-			@Nullable Long appStartTime) {
+			@Nullable Long appStartTime, @Nullable byte[] logKey) {
 		final Intent dialogIntent = new Intent(ctx, activity);
 		dialogIntent.setFlags(FLAG_ACTIVITY_NEW_TASK);
 		dialogIntent.putExtra(EXTRA_THROWABLE, t);
 		dialogIntent.putExtra(EXTRA_APP_START_TIME, appStartTime);
+		dialogIntent.putExtra(EXTRA_APP_LOGCAT, logKey);
 		ctx.startActivity(dialogIntent);
 	}
 

briar-android/src/main/java/org/briarproject/briar/android/view/CompositeSendButton.java

@@ -5,7 +5,6 @@ import android.util.AttributeSet;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.FrameLayout;
-import android.widget.ImageView;
 import android.widget.ProgressBar;
 
 import org.briarproject.briar.R;
@@ -20,7 +19,6 @@ import static java.util.Objects.requireNonNull;
 public class CompositeSendButton extends FrameLayout {
 
 	private final AppCompatImageButton sendButton, imageButton;
-	private final ImageView bombBadge;
 	private final ProgressBar progressBar;
 
 	private boolean hasImageSupport = false;
@@ -34,7 +32,6 @@ public class CompositeSendButton extends FrameLayout {
 
 		sendButton = findViewById(R.id.sendButton);
 		imageButton = findViewById(R.id.imageButton);
-		bombBadge = findViewById(R.id.bombBadge);
 		progressBar = findViewById(R.id.progressBar);
 	}
 
@@ -74,10 +71,6 @@ public class CompositeSendButton extends FrameLayout {
 		return hasImageSupport;
 	}
 
-	public void setBombVisible(boolean visible) {
-		bombBadge.setVisibility(visible ? VISIBLE : INVISIBLE);
-	}
-
 	public void showImageButton(boolean showImageButton, boolean sendEnabled) {
 		if (showImageButton) {
 			imageButton.setVisibility(VISIBLE);

briar-android/src/main/java/org/briarproject/briar/android/view/TextAttachmentController.java

@@ -26,6 +26,7 @@ import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
 import androidx.appcompat.app.AlertDialog.Builder;
 import androidx.customview.view.AbsSavedState;
+import androidx.lifecycle.LifecycleOwner;
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.Observer;
 import androidx.vectordrawable.graphics.drawable.VectorDrawableCompat;
@@ -38,7 +39,6 @@ import static androidx.core.content.ContextCompat.getColor;
 import static androidx.customview.view.AbsSavedState.EMPTY_STATE;
 import static androidx.lifecycle.Lifecycle.State.DESTROYED;
 import static org.briarproject.briar.android.util.UiUtils.resolveColorAttribute;
-import static org.briarproject.briar.android.view.TextSendController.SendState.SENT;
 import static org.briarproject.briar.api.messaging.MessagingConstants.MAX_ATTACHMENTS_PER_MESSAGE;
 
 @UiThread
@@ -52,6 +52,7 @@ public class TextAttachmentController extends TextSendController
 	private final AttachmentManager attachmentManager;
 
 	private final List<Uri> imageUris = new ArrayList<>();
+	private final CharSequence textHint;
 	private boolean loadingUris = false;
 
 	public TextAttachmentController(TextInputView v, ImagePreview imagePreview,
@@ -65,44 +66,23 @@ public class TextAttachmentController extends TextSendController
 
 		sendButton = (CompositeSendButton) compositeSendButton;
 		sendButton.setOnImageClickListener(view -> onImageButtonClicked());
+
+		textHint = textInput.getHint();
 	}
 
 	@Override
 	protected void updateViewState() {
-		super.updateViewState();
+		textInput.setEnabled(ready && !loadingUris);
+		boolean sendEnabled = ready && !loadingUris &&
+				(!textIsEmpty || canSendEmptyText());
 		if (loadingUris) {
 			sendButton.showProgress(true);
 		} else if (imageUris.isEmpty()) {
 			sendButton.showProgress(false);
-			sendButton.showImageButton(textIsEmpty, isSendButtonEnabled());
+			sendButton.showImageButton(textIsEmpty, sendEnabled);
 		} else {
 			sendButton.showProgress(false);
-			sendButton.showImageButton(false, isSendButtonEnabled());
+			sendButton.showImageButton(false, sendEnabled);
-		}
-	}
-
-	@Override
-	protected boolean isTextInputEnabled() {
-		return super.isTextInputEnabled() && !loadingUris;
-	}
-
-	@Override
-	protected boolean isSendButtonEnabled() {
-		return super.isSendButtonEnabled() && !loadingUris;
-	}
-
-	@Override
-	protected boolean isBombVisible() {
-		return super.isBombVisible() && (!textIsEmpty || !imageUris.isEmpty());
-	}
-
-	@Override
-	protected CharSequence getCurrentTextHint() {
-		if (imageUris.isEmpty()) {
-			return super.getCurrentTextHint();
-		} else {
-			Context ctx = textInput.getContext();
-			return ctx.getString(R.string.image_caption_hint);
 		}
 	}
 
@@ -111,17 +91,11 @@ public class TextAttachmentController extends TextSendController
 		if (canSend()) {
 			if (loadingUris) throw new AssertionError();
 			listener.onSendClick(textInput.getText(),
-					attachmentManager.getAttachmentHeadersForSending(),
+					attachmentManager.getAttachmentHeadersForSending());
-					expectedTimer).observe(listener, this::onSendStateChanged);
+			reset();
 		}
 	}
 
-	@Override
-	protected void onSendStateChanged(SendState sendState) {
-		super.onSendStateChanged(sendState);
-		if (sendState == SENT) reset();
-	}
-
 	@Override
 	protected boolean canSendEmptyText() {
 		return !imageUris.isEmpty();
@@ -180,7 +154,6 @@ public class TextAttachmentController extends TextSendController
 	private void onNewUris(boolean restart, List<Uri> newUris) {
 		if (newUris.isEmpty()) return;
 		if (loadingUris) throw new AssertionError();
-		if (textIsEmpty) onStartingMessage();
 		loadingUris = true;
 		if (newUris.size() > MAX_ATTACHMENTS_PER_MESSAGE) {
 			newUris = newUris.subList(0, MAX_ATTACHMENTS_PER_MESSAGE);
@@ -188,6 +161,7 @@ public class TextAttachmentController extends TextSendController
 		}
 		imageUris.addAll(newUris);
 		updateViewState();
+		textInput.setHint(R.string.image_caption_hint);
 		List<ImagePreviewItem> items = ImagePreviewItem.fromUris(imageUris);
 		imagePreview.showPreview(items);
 		// store attachments and show preview when successful
@@ -233,6 +207,8 @@ public class TextAttachmentController extends TextSendController
 	}
 
 	private void reset() {
+		// restore hint
+		textInput.setHint(textHint);
 		// hide image layout
 		imagePreview.setVisibility(GONE);
 		// reset image URIs
@@ -327,7 +303,7 @@ public class TextAttachmentController extends TextSendController
 	}
 
 	@UiThread
-	public interface AttachmentListener extends SendListener {
+	public interface AttachmentListener extends SendListener, LifecycleOwner {
 
 		void onAttachImage(Intent intent);
 

briar-android/src/main/java/org/briarproject/briar/android/view/TextSendController.java

@@ -1,9 +1,7 @@
 package org.briarproject.briar.android.view;
 
-import android.content.Context;
 import android.os.Parcelable;
 import android.view.View;
-import android.widget.Toast;
 
 import com.google.android.material.snackbar.Snackbar;
 
@@ -14,20 +12,11 @@ import org.briarproject.briar.api.attachment.AttachmentHeader;
 
 import java.util.List;
 
-import androidx.annotation.CallSuper;
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
-import androidx.appcompat.app.AlertDialog;
-import androidx.lifecycle.LifecycleOwner;
-import androidx.lifecycle.LiveData;
 
-import static android.widget.Toast.LENGTH_LONG;
 import static com.google.android.material.snackbar.Snackbar.LENGTH_SHORT;
 import static java.util.Collections.emptyList;
-import static org.briarproject.briar.android.view.TextSendController.SendState.ERROR;
-import static org.briarproject.briar.android.view.TextSendController.SendState.SENT;
-import static org.briarproject.briar.android.view.TextSendController.SendState.UNEXPECTED_TIMER;
-import static org.briarproject.briar.api.autodelete.AutoDeleteConstants.NO_AUTO_DELETE_TIMER;
 
 @UiThread
 @NotNullByDefault
@@ -37,12 +26,8 @@ public class TextSendController implements TextInputListener {
 	protected final View compositeSendButton;
 	protected final SendListener listener;
 
-	protected boolean textIsEmpty = true;
+	protected boolean ready = true, textIsEmpty = true;
-	private boolean ready = true;
-	private long currentTimer = NO_AUTO_DELETE_TIMER;
-	protected long expectedTimer = NO_AUTO_DELETE_TIMER;
 
-	private final CharSequence defaultHint;
 	private final boolean allowEmptyText;
 
 	public TextSendController(TextInputView v, SendListener listener,
@@ -51,91 +36,31 @@ public class TextSendController implements TextInputListener {
 		this.compositeSendButton.setOnClickListener(view -> onSendEvent());
 		this.listener = listener;
 		this.textInput = v.getEmojiTextInputView();
-		this.defaultHint = textInput.getHint();
 		this.allowEmptyText = allowEmptyText;
 	}
 
 	@Override
 	public void onTextIsEmptyChanged(boolean isEmpty) {
 		textIsEmpty = isEmpty;
-		if (!isEmpty) onStartingMessage();
 		updateViewState();
 	}
 
 	@Override
 	public void onSendEvent() {
 		if (canSend()) {
-			listener.onSendClick(textInput.getText(), emptyList(),
+			listener.onSendClick(textInput.getText(), emptyList());
-					expectedTimer).observe(listener, this::onSendStateChanged);
 		}
 	}
 
-	@CallSuper
-	protected void onSendStateChanged(SendState sendState) {
-		if (sendState == SENT) {
-			textInput.clearText();
-		} else if (sendState == UNEXPECTED_TIMER) {
-			boolean enabled = expectedTimer == NO_AUTO_DELETE_TIMER;
-			showTimerChangedDialog(enabled);
-		} else if (sendState == ERROR) {
-			Toast.makeText(textInput.getContext(), R.string.message_error,
-					LENGTH_LONG).show();
-		}
-	}
-
-	/**
-	 * Call whenever the user starts a new message,
-	 * either by entering text or adding an attachment.
-	 * This updates the expected auto-delete timer to the current value.
-	 */
-	protected void onStartingMessage() {
-		expectedTimer = currentTimer;
-	}
-
 	public void setReady(boolean ready) {
 		this.ready = ready;
 		updateViewState();
 	}
 
-	/**
-	 * Sets the current auto delete timer and updates the UI accordingly.
-	 */
-	public void setAutoDeleteTimer(long timer) {
-		currentTimer = timer;
-		updateViewState();
-	}
-
-	@CallSuper
 	protected void updateViewState() {
-		textInput.setEnabled(isTextInputEnabled());
+		textInput.setEnabled(ready);
-		textInput.setHint(getCurrentTextHint());
+		compositeSendButton
-		compositeSendButton.setEnabled(isSendButtonEnabled());
+				.setEnabled(ready && (!textIsEmpty || canSendEmptyText()));
-		if (compositeSendButton instanceof CompositeSendButton) {
-			CompositeSendButton sendButton =
-					(CompositeSendButton) compositeSendButton;
-			sendButton.setBombVisible(isBombVisible());
-		}
-	}
-
-	protected boolean isTextInputEnabled() {
-		return ready;
-	}
-
-	protected boolean isSendButtonEnabled() {
-		return ready && (!textIsEmpty || canSendEmptyText());
-	}
-
-	protected boolean isBombVisible() {
-		return currentTimer != NO_AUTO_DELETE_TIMER;
-	}
-
-	protected CharSequence getCurrentTextHint() {
-		if (currentTimer == NO_AUTO_DELETE_TIMER) {
-			return defaultHint;
-		} else {
-			Context ctx = textInput.getContext();
-			return ctx.getString(R.string.message_hint_auto_delete);
-		}
 	}
 
 	protected final boolean canSend() {
@@ -151,23 +76,6 @@ public class TextSendController implements TextInputListener {
 		return allowEmptyText;
 	}
 
-	private void showTimerChangedDialog(boolean enabled) {
-		Context ctx = textInput.getContext();
-		int message =
-				enabled ? R.string.auto_delete_changed_warning_message_enabled :
-						R.string.auto_delete_changed_warning_message_disabled;
-		new AlertDialog.Builder(ctx, R.style.BriarDialogTheme)
-				.setTitle(R.string.auto_delete_changed_warning_title)
-				.setMessage(message)
-				.setPositiveButton(R.string.auto_delete_changed_warning_send,
-						(dialog, which) -> {
-							expectedTimer = currentTimer;
-							onSendEvent();
-						})
-				.setNegativeButton(R.string.cancel, null)
-				.show();
-	}
-
 	@Nullable
 	public Parcelable onSaveInstanceState(@Nullable Parcelable superState) {
 		return superState;
@@ -178,11 +86,9 @@ public class TextSendController implements TextInputListener {
 		return state;
 	}
 
-	public enum SendState {SENT, ERROR, UNEXPECTED_TIMER}
+	@UiThread
-
+	public interface SendListener {
-	public interface SendListener extends LifecycleOwner {
+		void onSendClick(@Nullable String text, List<AttachmentHeader> headers);
-		LiveData<SendState> onSendClick(@Nullable String text,
-				List<AttachmentHeader> headers, long expectedAutoDeleteTimer);
 	}
 
 }

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

@@ -39,7 +39,8 @@ public interface AndroidNotificationManager {
 	String BLOG_CHANNEL_ID = "blogs";
 	// Channels are sorted by channel ID in the Settings app, so use IDs
 	// that will sort below the main channels such as contacts
-	String ONGOING_CHANNEL_ID = "zForegroundService";
+	String ONGOING_CHANNEL_OLD_ID = "zForegroundService";
+	String ONGOING_CHANNEL_ID = "zForegroundService2";
 	String FAILURE_CHANNEL_ID = "zStartupFailure";
 	String REMINDER_CHANNEL_ID = "zSignInReminder";
 

briar-android/src/main/res/drawable/ic_bomb.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-	android:width="16dp"
-	android:height="16dp"
-	android:viewportWidth="24"
-	android:viewportHeight="24">
-	<path
-		android:fillColor="#FFFFFF"
-		android:pathData="M11.25,6A3.25,3.25 0 0,1 14.5,2.75A3.25,3.25 0 0,1 17.75,6C17.75,6.42 18.08,6.75 18.5,6.75C18.92,6.75 19.25,6.42 19.25,6V5.25H20.75V6A2.25,2.25 0 0,1 18.5,8.25A2.25,2.25 0 0,1 16.25,6A1.75,1.75 0 0,0 14.5,4.25A1.75,1.75 0 0,0 12.75,6H14V7.29C16.89,8.15 19,10.83 19,14A7,7 0 0,1 12,21A7,7 0 0,1 5,14C5,10.83 7.11,8.15 10,7.29V6H11.25M22,6H24V7H22V6M19,4V2H20V4H19M20.91,4.38L22.33,2.96L23.04,3.67L21.62,5.09L20.91,4.38Z" />
-</vector>

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

@@ -1,71 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:app="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	android:layout_width="match_parent"
-	android:layout_height="match_parent">
-
-	<androidx.appcompat.widget.Toolbar
-		android:id="@+id/toolbar"
-		style="@style/BriarToolbar"
-		android:layout_width="match_parent"
-		android:layout_height="wrap_content"
-		app:layout_constraintEnd_toEndOf="parent"
-		app:layout_constraintStart_toStartOf="parent"
-		app:layout_constraintTop_toTopOf="parent"
-		app:navigationIcon="@drawable/abc_ic_ab_back_material"
-		app:title="@string/disappearing_messages_title" />
-
-	<ScrollView
-		android:layout_width="match_parent"
-		android:layout_height="0dp"
-		android:paddingHorizontal="@dimen/margin_large"
-		app:layout_constraintBottom_toBottomOf="parent"
-		app:layout_constraintEnd_toEndOf="parent"
-		app:layout_constraintStart_toStartOf="parent"
-		app:layout_constraintTop_toBottomOf="@id/toolbar">
-
-		<androidx.constraintlayout.widget.ConstraintLayout
-			android:layout_width="match_parent"
-			android:layout_height="wrap_content">
-
-			<ImageView
-				android:id="@+id/imageViewBomb"
-				android:layout_width="64dp"
-				android:layout_height="64dp"
-				android:layout_marginTop="16dp"
-				app:layout_constraintEnd_toEndOf="parent"
-				app:layout_constraintStart_toStartOf="parent"
-				app:layout_constraintTop_toTopOf="parent"
-				app:srcCompat="@drawable/ic_bomb"
-				app:tint="?attr/colorControlNormal"
-				tools:ignore="ContentDescription" />
-
-			<androidx.appcompat.widget.SwitchCompat
-				android:id="@+id/switchDisappearingMessages"
-				android:layout_width="wrap_content"
-				android:layout_height="wrap_content"
-				android:layout_marginTop="16dp"
-				android:enabled="false"
-				android:text="@string/disappearing_messages_summary"
-				app:layout_constraintEnd_toEndOf="parent"
-				app:layout_constraintStart_toStartOf="parent"
-				app:layout_constraintTop_toBottomOf="@+id/imageViewBomb" />
-
-			<TextView
-				android:id="@+id/buttonLearnMore"
-				android:layout_width="wrap_content"
-				android:layout_height="wrap_content"
-				android:layout_marginTop="@dimen/margin_large"
-				android:clickable="true"
-				android:focusable="true"
-				android:text="@string/learn_more"
-				android:textColor="@color/briar_text_link"
-				app:layout_constraintStart_toStartOf="parent"
-				app:layout_constraintTop_toBottomOf="@+id/switchDisappearingMessages" />
-
-		</androidx.constraintlayout.widget.ConstraintLayout>
-
-	</ScrollView>
-
-</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:app="http://schemas.android.com/apk/res-auto"
-	android:layout_width="match_parent"
-	android:layout_height="match_parent"
-	android:paddingHorizontal="?dialogPreferredPadding">
-
-	<TextView
-		android:id="@+id/textView"
-		android:layout_width="wrap_content"
-		android:layout_height="wrap_content"
-		android:text="@string/disappearing_messages_explanation_long"
-		android:textColor="?android:attr/textColorSecondary"
-		app:layout_constraintBottom_toBottomOf="parent"
-		app:layout_constraintEnd_toEndOf="parent"
-		app:layout_constraintStart_toStartOf="parent"
-		app:layout_constraintTop_toTopOf="parent" />
-
-</ScrollView>

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

@@ -112,7 +112,6 @@
 			android:textColor="@color/briar_primary"
 			android:textIsSelectable="true"
 			android:textSize="18sp"
-			android:typeface="monospace"
 			app:layout_constraintEnd_toEndOf="parent"
 			app:layout_constraintStart_toStartOf="parent"
 			app:layout_constraintTop_toBottomOf="@+id/yourLinkIcon"

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

@@ -139,10 +139,10 @@
 		<Space
 			android:id="@+id/space"
 			android:layout_width="0dp"
-			android:layout_height="0dp"
+			android:layout_height="wrap_content"
+			app:layout_constrainedHeight="true"
 			app:layout_constraintBottom_toTopOf="@+id/addButton"
 			app:layout_constraintEnd_toEndOf="parent"
-			app:layout_constraintHeight_default="wrap"
 			app:layout_constraintStart_toStartOf="parent"
 			app:layout_constraintTop_toBottomOf="@+id/contactNameLayout" />
 

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

@@ -1,6 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-
-<!-- This layout is only used indirectly by cloning and setting its ConstraintSet -->
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto"
 	xmlns:tools="http://schemas.android.com/tools"
@@ -70,16 +68,6 @@
 			android:layout_height="wrap_content"
 			tools:text="Dec 24, 13:37" />
 
-		<ImageView
-			android:id="@+id/bomb"
-			android:layout_width="wrap_content"
-			android:layout_height="wrap_content"
-			android:layout_marginStart="4dp"
-			android:layout_marginEnd="4dp"
-			app:srcCompat="@drawable/ic_bomb"
-			app:tint="?android:attr/textColorSecondary"
-			tools:ignore="ContentDescription" />
-
 	</LinearLayout>
 
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -1,6 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-
-<!-- This layout is only used indirectly by cloning and setting its ConstraintSet -->
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto"
 	xmlns:tools="http://schemas.android.com/tools"
@@ -60,8 +58,7 @@
 		app:layout_constraintEnd_toEndOf="parent"
 		app:layout_constraintHorizontal_bias="1.0"
 		app:layout_constraintStart_toStartOf="parent"
-		app:layout_constraintTop_toBottomOf="@+id/text"
+		app:layout_constraintTop_toBottomOf="@+id/text">
-		tools:ignore="UseCompoundDrawables">
 
 		<TextView
 			android:id="@+id/time"
@@ -70,16 +67,6 @@
 			android:layout_height="wrap_content"
 			tools:text="Dec 24, 13:37" />
 
-		<ImageView
-			android:id="@+id/bomb"
-			android:layout_width="wrap_content"
-			android:layout_height="wrap_content"
-			android:layout_marginStart="4dp"
-			android:layout_marginEnd="4dp"
-			app:srcCompat="@drawable/ic_bomb"
-			app:tint="?android:attr/textColorSecondary"
-			tools:ignore="ContentDescription" />
-
 	</LinearLayout>
 
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -1,19 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
 	android:layout_width="match_parent"
 	android:layout_height="wrap_content"
-	android:background="@drawable/list_item_background_selectable"
+	android:background="@drawable/list_item_background_selectable">
-	android:orientation="vertical">
 
 	<!--
-	We need to wrap the actual layout, because we want to
+	We need to wrap the actual layout, because
-	* clone the ConstraintLayout's constraints in the ViewHolder
+	* we want to clone the ConstraintLayout's constraints in the ViewHolder
-	* have a selectable frame around the message bubble
+	* we want to have a selectable frame around the message bubble
-	* insert a top notice with its own independent width
 	-->
-
-	<include layout="@layout/list_item_conversation_top_notice_in" />
-
 	<include layout="@layout/list_item_conversation_msg_in_content" />
 
-</LinearLayout>
+</FrameLayout>

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

@@ -1,6 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-
-<!-- This layout gets wrapped in *_msg_in.xml -->
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto"
 	xmlns:tools="http://schemas.android.com/tools"
@@ -70,17 +68,6 @@
 			android:layout_height="wrap_content"
 			tools:text="Dec 24, 13:37" />
 
-		<ImageView
-			android:id="@+id/bomb"
-			android:layout_width="wrap_content"
-			android:layout_height="wrap_content"
-			android:layout_marginStart="4dp"
-			android:layout_marginLeft="4dp"
-			app:srcCompat="@drawable/ic_bomb"
-			app:tint="?android:attr/textColorSecondary"
-			tools:ignore="ContentDescription"
-			tools:visibility="visible" />
-
 	</LinearLayout>
 
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -1,14 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto"
 	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
 	android:layout_height="wrap_content"
-	android:background="@drawable/list_item_background_selectable"
+	android:background="@drawable/list_item_background_selectable">
-	android:orientation="vertical"
-	android:paddingTop="@dimen/message_bubble_margin">
-
-	<include layout="@layout/list_item_conversation_top_notice_out" />
 
 	<androidx.constraintlayout.widget.ConstraintLayout
 		android:id="@+id/layout"
@@ -77,26 +73,15 @@
 				style="@style/TextMessage.Timestamp"
 				android:layout_width="wrap_content"
 				android:layout_height="wrap_content"
-				android:layout_marginEnd="4dp"
+				android:layout_marginEnd="6dp"
-				android:layout_marginRight="4dp"
+				android:layout_marginRight="6dp"
 				android:textColor="@color/private_message_date_inverse"
 				tools:text="Dec 24, 13:37" />
 
-			<ImageView
-				android:id="@+id/bomb"
-				android:layout_width="wrap_content"
-				android:layout_height="wrap_content"
-				android:layout_marginEnd="4dp"
-				android:layout_marginRight="4dp"
-				app:srcCompat="@drawable/ic_bomb"
-				app:tint="@color/private_message_date_inverse"
-				tools:ignore="ContentDescription" />
-
 			<ImageView
 				android:id="@+id/status"
 				android:layout_width="wrap_content"
 				android:layout_height="wrap_content"
-				app:tint="@color/private_message_date_inverse"
 				tools:ignore="ContentDescription"
 				tools:src="@drawable/message_delivered" />
 
@@ -104,4 +89,4 @@
 
 	</androidx.constraintlayout.widget.ConstraintLayout>
 
-</LinearLayout>
+</FrameLayout>

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

@@ -5,9 +5,8 @@
 	android:layout_width="match_parent"
 	android:layout_height="wrap_content"
 	android:background="@drawable/list_item_background_selectable"
-	android:orientation="vertical">
+	android:orientation="vertical"
-
+	android:paddingTop="@dimen/message_bubble_margin">
-	<include layout="@layout/list_item_conversation_top_notice_in" />
 
 	<com.vanniktech.emoji.EmojiTextView
 		android:id="@+id/msgText"
@@ -16,13 +15,11 @@
 		android:layout_height="wrap_content"
 		android:layout_marginStart="@dimen/message_bubble_margin_tail"
 		android:layout_marginLeft="@dimen/message_bubble_margin_tail"
-		android:layout_marginTop="@dimen/message_bubble_margin"
 		android:layout_marginEnd="@dimen/message_bubble_margin_non_tail"
 		android:layout_marginRight="@dimen/message_bubble_margin_non_tail"
 		android:background="@drawable/msg_in_top"
 		android:elevation="@dimen/message_bubble_elevation"
-		tools:text="Short message"
+		tools:text="Short message" />
-		tools:visibility="visible" />
 
 	<androidx.constraintlayout.widget.ConstraintLayout
 		android:id="@+id/layout"
@@ -51,28 +48,10 @@
 			android:layout_width="wrap_content"
 			android:layout_height="wrap_content"
 			android:layout_marginTop="@dimen/message_bubble_timestamp_margin"
-			app:layout_constraintEnd_toStartOf="@+id/bomb"
+			app:layout_constraintEnd_toEndOf="@+id/text"
-			app:layout_constraintHorizontal_bias="1.0"
-			app:layout_constraintHorizontal_chainStyle="packed"
-			app:layout_constraintStart_toStartOf="parent"
 			app:layout_constraintTop_toBottomOf="@+id/text"
 			tools:text="Dec 24, 13:37" />
 
-		<ImageView
-			android:id="@+id/bomb"
-			android:layout_width="wrap_content"
-			android:layout_height="wrap_content"
-			android:layout_marginStart="4dp"
-			android:layout_marginLeft="4dp"
-			android:layout_marginTop="@dimen/message_bubble_timestamp_margin"
-			app:layout_constraintEnd_toEndOf="@+id/text"
-			app:layout_constraintStart_toEndOf="@+id/time"
-			app:layout_constraintTop_toBottomOf="@+id/text"
-			app:srcCompat="@drawable/ic_bomb"
-			app:tint="?android:attr/textColorSecondary"
-			tools:ignore="ContentDescription"
-			tools:visibility="visible" />
-
 	</androidx.constraintlayout.widget.ConstraintLayout>
 
 </LinearLayout>

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

@@ -8,8 +8,6 @@
 	android:orientation="vertical"
 	android:paddingTop="@dimen/message_bubble_margin">
 
-	<include layout="@layout/list_item_conversation_top_notice_out" />
-
 	<com.vanniktech.emoji.EmojiTextView
 		android:id="@+id/msgText"
 		style="@style/TextMessage"
@@ -17,14 +15,12 @@
 		android:layout_height="wrap_content"
 		android:layout_marginStart="@dimen/message_bubble_margin_non_tail"
 		android:layout_marginLeft="@dimen/message_bubble_margin_non_tail"
-		android:layout_marginTop="@dimen/message_bubble_margin"
 		android:layout_marginEnd="@dimen/message_bubble_margin_tail"
 		android:layout_marginRight="@dimen/message_bubble_margin_tail"
 		android:background="@drawable/msg_out_top"
 		android:elevation="@dimen/message_bubble_elevation"
 		android:textColor="@color/briar_text_primary_inverse"
-		tools:text="This is a long long long message that spans over several lines.\n\nIt ends here."
+		tools:text="This is a long long long message that spans over several lines.\n\nIt ends here." />
-		tools:visibility="visible" />
 
 	<androidx.constraintlayout.widget.ConstraintLayout
 		android:id="@+id/layout"
@@ -59,29 +55,15 @@
 			app:layout_constraintTop_toBottomOf="@+id/text"
 			tools:text="Dec 24, 13:37" />
 
-		<ImageView
-			android:id="@+id/bomb"
-			android:layout_width="wrap_content"
-			android:layout_height="wrap_content"
-			android:layout_marginStart="4dp"
-			android:layout_marginLeft="4dp"
-			app:layout_constraintBottom_toBottomOf="@+id/time"
-			app:layout_constraintStart_toEndOf="@+id/time"
-			app:layout_constraintTop_toTopOf="@+id/time"
-			app:srcCompat="@drawable/ic_bomb"
-			app:tint="@color/private_message_date_inverse"
-			tools:ignore="ContentDescription" />
-
 		<ImageView
 			android:id="@+id/status"
 			android:layout_width="wrap_content"
 			android:layout_height="wrap_content"
-			android:layout_marginStart="4dp"
+			android:layout_marginStart="@dimen/margin_medium"
-			android:layout_marginLeft="4dp"
+			android:layout_marginLeft="@dimen/margin_medium"
 			app:layout_constraintBottom_toBottomOf="@+id/time"
-			app:layout_constraintStart_toEndOf="@+id/bomb"
+			app:layout_constraintStart_toEndOf="@+id/time"
 			app:layout_constraintTop_toTopOf="@+id/time"
-			app:tint="@color/private_message_date_inverse"
 			tools:ignore="ContentDescription"
 			tools:src="@drawable/message_delivered" />