Merge branch 'master' into '941-store-correct-parent-id'

# Conflicts:
#   briar-core/src/test/java/org/briarproject/briar/blog/BlogManagerImplTest.java

.gitlab-ci.yml

@@ -0,0 +1,20 @@
+image: registry.gitlab.com/fdroid/ci-images:client-latest
+
+cache:
+  paths:
+    - .gradle/wrapper
+    - .gradle/caches
+
+before_script:
+  - export GRADLE_USER_HOME=$PWD/.gradle
+#  - export ANDROID_COMPILE_SDK=`sed -n 's,.*compileSdkVersion\s*\([0-9][0-9]*\).*,\1,p' app/build.gradle`
+#  - echo y | android --silent update sdk --no-ui --filter android-${ANDROID_COMPILE_SDK}
+
+test:
+  script:
+    - ./gradlew test
+
+after_script:
+    # this file changes every time but should not be cached
+    - rm -f $GRADLE_USER_HOME/caches/modules-2/modules-2.lock
+    - rm -fr $GRADLE_USER_HOME/caches/*/plugin-resolution/

bramble-api/src/main/java/org/briarproject/bramble/api/plugin/TorConstants.java

@@ -8,6 +8,7 @@ public interface TorConstants {
 	int CONTROL_PORT = 59051;
 
 	int CONNECT_TO_PROXY_TIMEOUT = 5000; // Milliseconds
+	int EXTRA_SOCKET_TIMEOUT = 30000; // Milliseconds
 
 	String PREF_TOR_NETWORK = "network";
 	String PREF_TOR_PORT = "port";

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

@@ -19,7 +19,7 @@ public class PrivacyUtils {
 
 	@Nullable
 	public static String scrubMacAddress(@Nullable String address) {
-		if (address == null) return null;
+		if (address == null || address.length() == 0) return null;
 		// this is a fake address we need to know about
 		if (address.equals("02:00:00:00:00:00")) return address;
 		// keep first and last octet of MAC address

bramble-core/src/main/java/org/briarproject/bramble/socks/SocksModule.java

@@ -8,6 +8,7 @@ import dagger.Module;
 import dagger.Provides;
 
 import static org.briarproject.bramble.api.plugin.TorConstants.CONNECT_TO_PROXY_TIMEOUT;
+import static org.briarproject.bramble.api.plugin.TorConstants.EXTRA_SOCKET_TIMEOUT;
 import static org.briarproject.bramble.api.plugin.TorConstants.SOCKS_PORT;
 
 @Module
@@ -17,6 +18,7 @@ public class SocksModule {
 	SocketFactory provideTorSocketFactory() {
 		InetSocketAddress proxy = new InetSocketAddress("127.0.0.1",
 				SOCKS_PORT);
-		return new SocksSocketFactory(proxy, CONNECT_TO_PROXY_TIMEOUT);
+		return new SocksSocketFactory(proxy, CONNECT_TO_PROXY_TIMEOUT,
+				EXTRA_SOCKET_TIMEOUT);
 	}
 }

bramble-core/src/main/java/org/briarproject/bramble/socks/SocksSocket.java

@@ -29,11 +29,13 @@ class SocksSocket extends Socket {
 	private static final byte[] UNSPECIFIED_ADDRESS = new byte[4];
 
 	private final SocketAddress proxy;
-	private final int connectToProxyTimeout;
+	private final int connectToProxyTimeout, extraSocketTimeout;
 
-	SocksSocket(SocketAddress proxy, int connectToProxyTimeout) {
+	SocksSocket(SocketAddress proxy, int connectToProxyTimeout,
+			int extraSocketTimeout) {
 		this.proxy = proxy;
 		this.connectToProxyTimeout = connectToProxyTimeout;
+		this.extraSocketTimeout = extraSocketTimeout;
 	}
 
 	@Override
@@ -47,7 +49,7 @@ class SocksSocket extends Socket {
 		InetAddress address = inet.getAddress();
 		if (address != null
 				&& !Arrays.equals(address.getAddress(), UNSPECIFIED_ADDRESS)) {
-				throw new IllegalArgumentException();
+			throw new IllegalArgumentException();
 		}
 		String host = inet.getHostName();
 		if (host.length() > 255) throw new IllegalArgumentException();
@@ -62,16 +64,16 @@ class SocksSocket extends Socket {
 		sendMethodRequest(out);
 		receiveMethodResponse(in);
 
-		// Use the supplied timeout temporarily
+		// Use the supplied timeout temporarily, plus any configured extra
 		int oldTimeout = getSoTimeout();
-		setSoTimeout(timeout);
+		setSoTimeout(timeout + extraSocketTimeout);
 
 		// Connect to the endpoint via the proxy
 		sendConnectRequest(out, host, port);
 		receiveConnectResponse(in);
 
-		// Restore the old timeout
+		// Restore the old timeout, plus any configured extra
-		setSoTimeout(oldTimeout);
+		setSoTimeout(oldTimeout + extraSocketTimeout);
 	}
 
 	private void sendMethodRequest(OutputStream out) throws IOException {

bramble-core/src/main/java/org/briarproject/bramble/socks/SocksSocketFactory.java

@@ -11,16 +11,18 @@ import javax.net.SocketFactory;
 class SocksSocketFactory extends SocketFactory {
 
 	private final SocketAddress proxy;
-	private final int connectToProxyTimeout;
+	private final int connectToProxyTimeout, extraSocketTimeout;
 
-	SocksSocketFactory(SocketAddress proxy, int connectToProxyTimeout) {
+	SocksSocketFactory(SocketAddress proxy, int connectToProxyTimeout,
+			int extraSocketTimeout) {
 		this.proxy = proxy;
 		this.connectToProxyTimeout = connectToProxyTimeout;
+		this.extraSocketTimeout = extraSocketTimeout;
 	}
 
 	@Override
 	public Socket createSocket() {
-		return new SocksSocket(proxy, connectToProxyTimeout);
+		return new SocksSocket(proxy, connectToProxyTimeout, extraSocketTimeout);
 	}
 
 	@Override

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

@@ -32,6 +32,7 @@ import org.briarproject.briar.api.android.ScreenFilterMonitor;
 import org.briarproject.briar.api.blog.BlogManager;
 import org.briarproject.briar.api.blog.BlogPostFactory;
 import org.briarproject.briar.api.blog.BlogSharingManager;
+import org.briarproject.briar.api.client.MessageTracker;
 import org.briarproject.briar.api.feed.FeedManager;
 import org.briarproject.briar.api.forum.ForumManager;
 import org.briarproject.briar.api.forum.ForumSharingManager;
@@ -78,6 +79,8 @@ public interface AndroidComponent
 	@DatabaseExecutor
 	Executor databaseExecutor();
 
+	MessageTracker messageTracker();
+
 	LifecycleManager lifecycleManager();
 
 	IdentityManager identityManager();

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

@@ -59,7 +59,6 @@ import static android.app.Notification.DEFAULT_SOUND;
 import static android.app.Notification.DEFAULT_VIBRATE;
 import static android.content.Context.NOTIFICATION_SERVICE;
 import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TOP;
-import static android.content.Intent.FLAG_ACTIVITY_SINGLE_TOP;
 import static android.support.v4.app.NotificationCompat.CATEGORY_MESSAGE;
 import static android.support.v4.app.NotificationCompat.CATEGORY_SOCIAL;
 import static android.support.v4.app.NotificationCompat.VISIBILITY_SECRET;
@@ -310,7 +309,7 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 				ContactId c = contactCounts.keySet().iterator().next();
 				i.putExtra(CONTACT_ID, c.getInt());
 				i.setData(Uri.parse(CONTACT_URI + "/" + c.getInt()));
-				i.setFlags(FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_SINGLE_TOP);
+				i.setFlags(FLAG_ACTIVITY_CLEAR_TOP);
 				TaskStackBuilder t = TaskStackBuilder.create(appContext);
 				t.addParentStack(ConversationActivity.class);
 				t.addNextIntent(i);
@@ -319,7 +318,7 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 				// Touching the notification shows the contact list
 				Intent i = new Intent(appContext, NavDrawerActivity.class);
 				i.putExtra(INTENT_CONTACTS, true);
-				i.setFlags(FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_SINGLE_TOP);
+				i.setFlags(FLAG_ACTIVITY_CLEAR_TOP);
 				i.setData(Uri.parse(CONTACT_URI));
 				TaskStackBuilder t = TaskStackBuilder.create(appContext);
 				t.addParentStack(NavDrawerActivity.class);
@@ -415,7 +414,7 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 				i.putExtra(GROUP_ID, g.getBytes());
 				String idHex = StringUtils.toHexString(g.getBytes());
 				i.setData(Uri.parse(GROUP_URI + "/" + idHex));
-				i.setFlags(FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_SINGLE_TOP);
+				i.setFlags(FLAG_ACTIVITY_CLEAR_TOP);
 				TaskStackBuilder t = TaskStackBuilder.create(appContext);
 				t.addParentStack(GroupActivity.class);
 				t.addNextIntent(i);
@@ -424,7 +423,7 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 				// Touching the notification shows the group list
 				Intent i = new Intent(appContext, NavDrawerActivity.class);
 				i.putExtra(INTENT_GROUPS, true);
-				i.setFlags(FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_SINGLE_TOP);
+				i.setFlags(FLAG_ACTIVITY_CLEAR_TOP);
 				i.setData(Uri.parse(GROUP_URI));
 				TaskStackBuilder t = TaskStackBuilder.create(appContext);
 				t.addParentStack(NavDrawerActivity.class);
@@ -507,7 +506,7 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 				i.putExtra(GROUP_ID, g.getBytes());
 				String idHex = StringUtils.toHexString(g.getBytes());
 				i.setData(Uri.parse(FORUM_URI + "/" + idHex));
-				i.setFlags(FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_SINGLE_TOP);
+				i.setFlags(FLAG_ACTIVITY_CLEAR_TOP);
 				TaskStackBuilder t = TaskStackBuilder.create(appContext);
 				t.addParentStack(ForumActivity.class);
 				t.addNextIntent(i);
@@ -516,7 +515,7 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 				// Touching the notification shows the forum list
 				Intent i = new Intent(appContext, NavDrawerActivity.class);
 				i.putExtra(INTENT_FORUMS, true);
-				i.setFlags(FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_SINGLE_TOP);
+				i.setFlags(FLAG_ACTIVITY_CLEAR_TOP);
 				i.setData(Uri.parse(FORUM_URI));
 				TaskStackBuilder t = TaskStackBuilder.create(appContext);
 				t.addParentStack(NavDrawerActivity.class);
@@ -595,7 +594,7 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 			// Touching the notification shows the combined blog feed
 			Intent i = new Intent(appContext, NavDrawerActivity.class);
 			i.putExtra(INTENT_BLOGS, true);
-			i.setFlags(FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_SINGLE_TOP);
+			i.setFlags(FLAG_ACTIVITY_CLEAR_TOP);
 			i.setData(Uri.parse(BLOG_URI));
 			TaskStackBuilder t = TaskStackBuilder.create(appContext);
 			t.addParentStack(NavDrawerActivity.class);
@@ -651,7 +650,7 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 		// Touching the notification shows the contact list
 		Intent i = new Intent(appContext, NavDrawerActivity.class);
 		i.putExtra(INTENT_CONTACTS, true);
-		i.setFlags(FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_SINGLE_TOP);
+		i.setFlags(FLAG_ACTIVITY_CLEAR_TOP);
 		i.setData(Uri.parse(CONTACT_URI));
 		TaskStackBuilder t = TaskStackBuilder.create(appContext);
 		t.addParentStack(NavDrawerActivity.class);

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

@@ -28,7 +28,6 @@ import javax.inject.Inject;
 import static android.app.PendingIntent.FLAG_UPDATE_CURRENT;
 import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TOP;
 import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
-import static android.content.Intent.FLAG_ACTIVITY_SINGLE_TOP;
 import static android.support.v4.app.NotificationCompat.CATEGORY_SERVICE;
 import static android.support.v4.app.NotificationCompat.PRIORITY_MIN;
 import static android.support.v4.app.NotificationCompat.VISIBILITY_SECRET;
@@ -83,8 +82,7 @@ public class BriarService extends Service {
 		b.setWhen(0); // Don't show the time
 		b.setOngoing(true);
 		Intent i = new Intent(this, NavDrawerActivity.class);
-		i.setFlags(FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_CLEAR_TOP |
+		i.setFlags(FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_CLEAR_TOP);
-				FLAG_ACTIVITY_SINGLE_TOP);
 		b.setContentIntent(PendingIntent.getActivity(this, 0, i, 0));
 		if (Build.VERSION.SDK_INT >= 21) {
 			b.setCategory(CATEGORY_SERVICE);

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

@@ -6,11 +6,10 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.SharedPreferences;
-import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
-import android.support.annotation.NonNull;
+import android.content.pm.PackageManager.NameNotFoundException;
-import android.support.annotation.Nullable;
+import android.content.pm.Signature;
 import android.support.annotation.UiThread;
 import android.support.v7.preference.PreferenceManager;
 
@@ -19,11 +18,16 @@ import org.briarproject.bramble.api.lifecycle.ServiceException;
 import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
 import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
 import org.briarproject.bramble.api.system.AndroidExecutor;
+import org.briarproject.bramble.util.StringUtils;
 import org.briarproject.briar.api.android.ScreenFilterMonitor;
 
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.security.cert.CertificateException;
+import java.security.cert.CertificateFactory;
+import java.security.cert.X509Certificate;
 import java.util.Collection;
 import java.util.HashSet;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
 import java.util.TreeSet;
@@ -31,32 +35,58 @@ import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
 import java.util.concurrent.atomic.AtomicBoolean;
-import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static android.Manifest.permission.SYSTEM_ALERT_WINDOW;
+import static android.content.Intent.ACTION_PACKAGE_ADDED;
+import static android.content.Intent.EXTRA_REPLACING;
+import static android.content.pm.ApplicationInfo.FLAG_SYSTEM;
+import static android.content.pm.ApplicationInfo.FLAG_UPDATED_SYSTEM_APP;
+import static android.content.pm.PackageManager.GET_PERMISSIONS;
+import static android.content.pm.PackageManager.GET_SIGNATURES;
+import static java.util.logging.Level.WARNING;
 
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
 public class ScreenFilterMonitorImpl extends BroadcastReceiver
-		implements Service,
+		implements Service, ScreenFilterMonitor {
-		ScreenFilterMonitor {
 
 	private static final Logger LOG =
 			Logger.getLogger(ScreenFilterMonitorImpl.class.getName());
 	private static final String PREF_SCREEN_FILTER_APPS =
 			"shownScreenFilterApps";
+
+	/*
+ 	 * Ignore Play Services if it uses this package name and public key - it's
+	 * effectively a system app, but not flagged as such on older systems
+	 */
+	private static final String PLAY_SERVICES_PACKAGE =
+			"com.google.android.gms";
+	private static final String PLAY_SERVICES_PUBLIC_KEY =
+			"30820120300D06092A864886F70D01010105000382010D0030820108" +
+					"0282010100AB562E00D83BA208AE0A966F124E29DA11F2AB56D08F58" +
+					"E2CCA91303E9B754D372F640A71B1DCB130967624E4656A7776A9219" +
+					"3DB2E5BFB724A91E77188B0E6A47A43B33D9609B77183145CCDF7B2E" +
+					"586674C9E1565B1F4C6A5955BFF251A63DABF9C55C27222252E875E4" +
+					"F8154A645F897168C0B1BFC612EABF785769BB34AA7984DC7E2EA276" +
+					"4CAE8307D8C17154D7EE5F64A51A44A602C249054157DC02CD5F5C0E" +
+					"55FBEF8519FBE327F0B1511692C5A06F19D18385F5C4DBC2D6B93F68" +
+					"CC2979C70E18AB93866B3BD5DB8999552A0E3B4C99DF58FB918BEDC1" +
+					"82BA35E003C1B4B10DD244A8EE24FFFD333872AB5221985EDAB0FC0D" +
+					"0B145B6AA192858E79020103";
+
 	private final Context appContext;
 	private final AndroidExecutor androidExecutor;
-	private final LinkedList<String> appNames = new LinkedList<>();
 	private final PackageManager pm;
 	private final SharedPreferences prefs;
 	private final AtomicBoolean used = new AtomicBoolean(false);
+
+	// The following must only be accessed on the UI thread
 	private final Set<String> apps = new HashSet<>();
 	private final Set<String> shownApps;
-	// Used solely for the UiThread
 	private boolean serviceStarted = false;
 
 	@Inject
@@ -75,7 +105,7 @@ public class ScreenFilterMonitorImpl extends BroadcastReceiver
 			@Override
 			public Void call() {
 				IntentFilter intentFilter = new IntentFilter();
-				intentFilter.addAction(Intent.ACTION_PACKAGE_ADDED);
+				intentFilter.addAction(ACTION_PACKAGE_ADDED);
 				intentFilter.addDataScheme("package");
 				appContext.registerReceiver(ScreenFilterMonitorImpl.this,
 						intentFilter);
@@ -109,9 +139,8 @@ public class ScreenFilterMonitorImpl extends BroadcastReceiver
 	}
 
 	private Set<String> getShownScreenFilterApps() {
-		// res must not be modified
+		// Result must not be modified
-		Set<String> s =
+		Set<String> s = prefs.getStringSet(PREF_SCREEN_FILTER_APPS, null);
-				prefs.getStringSet(PREF_SCREEN_FILTER_APPS, null);
 		HashSet<String> result = new HashSet<>();
 		if (s != null) {
 			result.addAll(s);
@@ -121,7 +150,7 @@ public class ScreenFilterMonitorImpl extends BroadcastReceiver
 
 	@Override
 	public void onReceive(Context context, Intent intent) {
-		if (!intent.getBooleanExtra(Intent.EXTRA_REPLACING, false)) {
+		if (!intent.getBooleanExtra(EXTRA_REPLACING, false)) {
 			final String packageName =
 					intent.getData().getEncodedSchemeSpecificPart();
 			androidExecutor.runOnUiThread(new Runnable() {
@@ -155,7 +184,7 @@ public class ScreenFilterMonitorImpl extends BroadcastReceiver
 	@Override
 	@UiThread
 	public void storeAppsAsShown(Collection<String> s, boolean persistent) {
-		HashSet<String> buf = new HashSet(s);
+		HashSet<String> buf = new HashSet<>(s);
 		shownApps.addAll(buf);
 		if (persistent && !s.isEmpty()) {
 			buf.addAll(getShownScreenFilterApps());
@@ -168,7 +197,7 @@ public class ScreenFilterMonitorImpl extends BroadcastReceiver
 	private Set<String> getInstalledScreenFilterApps() {
 		HashSet<String> screenFilterApps = new HashSet<>();
 		List<PackageInfo> packageInfos =
-				pm.getInstalledPackages(PackageManager.GET_PERMISSIONS);
+				pm.getInstalledPackages(GET_PERMISSIONS);
 		for (PackageInfo packageInfo : packageInfos) {
 			if (isOverlayApp(packageInfo)) {
 				String name = pkgToString(packageInfo);
@@ -180,25 +209,22 @@ public class ScreenFilterMonitorImpl extends BroadcastReceiver
 		return screenFilterApps;
 	}
 
-	// Checks if pkg uses the SYSTEM_ALERT_WINDOW permission and if so
+	// Checks if a package uses the SYSTEM_ALERT_WINDOW permission and if so
 	// returns the app name.
 	@Nullable
 	private String isOverlayApp(String pkg) {
 		try {
-			PackageInfo pkgInfo =
+			PackageInfo pkgInfo = pm.getPackageInfo(pkg, GET_PERMISSIONS);
-					pm.getPackageInfo(pkg, PackageManager.GET_PERMISSIONS);
 			if (isOverlayApp(pkgInfo)) {
 				return pkgToString(pkgInfo);
 			}
-		} catch (PackageManager.NameNotFoundException ignored) {
+		} catch (NameNotFoundException e) {
-			if (LOG.isLoggable(Level.WARNING)) {
+			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
-				LOG.warning("Package name not found: " + pkg);
-			}
 		}
 		return null;
 	}
 
-	// Fetch the application name for a given package.
+	// Fetches the application name for a given package.
 	@Nullable
 	private String pkgToString(PackageInfo pkgInfo) {
 		CharSequence seq = pm.getApplicationLabel(pkgInfo.applicationInfo);
@@ -208,25 +234,49 @@ public class ScreenFilterMonitorImpl extends BroadcastReceiver
 		return null;
 	}
 
-	// Checks if an installed pkg is a user app using the permission.
+	// Checks if an installed package is a user app using the permission.
 	private boolean isOverlayApp(PackageInfo packageInfo) {
-		int mask = ApplicationInfo.FLAG_SYSTEM |
+		int mask = FLAG_SYSTEM | FLAG_UPDATED_SYSTEM_APP;
-				ApplicationInfo.FLAG_UPDATED_SYSTEM_APP;
 		// Ignore system apps
 		if ((packageInfo.applicationInfo.flags & mask) != 0) {
 			return false;
 		}
-		//Get Permissions
+		// Ignore Play Services, it's effectively a system app
-		String[] requestedPermissions =
+		if (isPlayServices(packageInfo.packageName)) {
-				packageInfo.requestedPermissions;
+			return false;
+		}
+		// Get permissions
+		String[] requestedPermissions = packageInfo.requestedPermissions;
 		if (requestedPermissions != null) {
 			for (String requestedPermission : requestedPermissions) {
-				if (requestedPermission
+				if (requestedPermission.equals(SYSTEM_ALERT_WINDOW)) {
-						.equals(SYSTEM_ALERT_WINDOW)) {
 					return true;
 				}
 			}
 		}
 		return false;
 	}
+
+	private boolean isPlayServices(String pkg) {
+		if (!PLAY_SERVICES_PACKAGE.equals(pkg)) return false;
+		try {
+			PackageInfo sigs = pm.getPackageInfo(pkg, GET_SIGNATURES);
+			// The genuine Play Services app should have a single signature
+			Signature[] signatures = sigs.signatures;
+			if (signatures == null || signatures.length != 1) return false;
+			// Extract the public key from the signature
+			CertificateFactory certFactory =
+					CertificateFactory.getInstance("X509");
+			byte[] signatureBytes = signatures[0].toByteArray();
+			InputStream in = new ByteArrayInputStream(signatureBytes);
+			X509Certificate cert =
+					(X509Certificate) certFactory.generateCertificate(in);
+			byte[] publicKeyBytes = cert.getPublicKey().getEncoded();
+			String publicKey = StringUtils.toHexString(publicKeyBytes);
+			return PLAY_SERVICES_PUBLIC_KEY.equals(publicKey);
+		} catch (NameNotFoundException | CertificateException e) {
+			if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+			return false;
+		}
+	}
 }

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

@@ -3,7 +3,6 @@ package org.briarproject.briar.android.activity;
 import android.annotation.SuppressLint;
 import android.content.Intent;
 import android.os.Build;
-import android.support.annotation.Nullable;
 import android.support.v7.app.ActionBar;
 import android.support.v7.widget.Toolbar;
 import android.transition.Slide;
@@ -21,6 +20,7 @@ import org.briarproject.briar.android.panic.ExitActivity;
 
 import java.util.logging.Logger;
 
+import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TASK;

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

@@ -2,7 +2,6 @@ package org.briarproject.briar.android.blog;
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.annotation.Nullable;
 import android.support.v7.widget.Toolbar;
 import android.view.View;
 
@@ -15,6 +14,7 @@ import org.briarproject.briar.android.activity.BriarActivity;
 import org.briarproject.briar.android.fragment.BaseFragment.BaseFragmentListener;
 import org.briarproject.briar.android.sharing.BlogSharingStatusActivity;
 
+import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 @MethodsNotNullByDefault

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

@@ -169,7 +169,7 @@ class BlogControllerImpl extends BaseControllerImpl
 					LocalAuthor a = identityManager.getLocalAuthor();
 					Blog b = blogManager.getBlog(groupId);
 					boolean ours = a.getId().equals(b.getAuthor().getId());
-					boolean removable = blogManager.canBeRemoved(groupId);
+					boolean removable = blogManager.canBeRemoved(b);
 					BlogItem blog = new BlogItem(b, ours, removable);
 					long duration = System.currentTimeMillis() - now;
 					if (LOG.isLoggable(INFO))

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

@@ -43,7 +43,6 @@ import javax.inject.Inject;
 
 import static android.app.Activity.RESULT_OK;
 import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TOP;
-import static android.content.Intent.FLAG_ACTIVITY_SINGLE_TOP;
 import static android.widget.Toast.LENGTH_SHORT;
 import static org.briarproject.briar.android.activity.BriarActivity.GROUP_ID;
 import static org.briarproject.briar.android.activity.RequestCodes.REQUEST_SHARE_BLOG;
@@ -149,14 +148,14 @@ public class BlogFragment extends BaseFragment
 				return true;
 			case R.id.action_blog_share:
 				Intent i2 = new Intent(getActivity(), ShareBlogActivity.class);
-				i2.setFlags(FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_SINGLE_TOP);
+				i2.setFlags(FLAG_ACTIVITY_CLEAR_TOP);
 				i2.putExtra(GROUP_ID, groupId.getBytes());
 				startActivityForResult(i2, REQUEST_SHARE_BLOG);
 				return true;
 			case R.id.action_blog_sharing_status:
 				Intent i3 = new Intent(getActivity(),
 						BlogSharingStatusActivity.class);
-				i3.setFlags(FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_SINGLE_TOP);
+				i3.setFlags(FLAG_ACTIVITY_CLEAR_TOP);
 				i3.putExtra(GROUP_ID, groupId.getBytes());
 				startActivity(i3);
 				return true;

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

@@ -1,6 +1,5 @@
 package org.briarproject.briar.android.contact;
 
-import android.support.annotation.Nullable;
 import android.support.annotation.UiThread;
 import android.support.v7.widget.RecyclerView;
 import android.view.View;
@@ -13,6 +12,8 @@ import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.briar.R;
 import org.briarproject.briar.android.contact.BaseContactListAdapter.OnContactClickListener;
 
+import javax.annotation.Nullable;
+
 import im.delight.android.identicons.IdenticonDrawable;
 
 @UiThread

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

@@ -17,7 +17,7 @@ public class DbControllerImpl implements DbController {
 	private static final Logger LOG =
 			Logger.getLogger(DbControllerImpl.class.getName());
 
-	private final Executor dbExecutor;
+	protected final Executor dbExecutor;
 	private final LifecycleManager lifecycleManager;
 
 	@Inject

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

@@ -1,7 +1,5 @@
 package org.briarproject.briar.android.controller;
 
-import android.support.annotation.Nullable;
-
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.event.EventBus;
@@ -15,6 +13,7 @@ import java.util.Collection;
 import java.util.HashSet;
 import java.util.Set;
 
+import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 @NotNullByDefault

briar-android/src/main/java/org/briarproject/briar/android/forum/ForumActivity.java

@@ -34,7 +34,6 @@ import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TOP;
-import static android.content.Intent.FLAG_ACTIVITY_SINGLE_TOP;
 import static android.widget.Toast.LENGTH_SHORT;
 import static org.briarproject.briar.android.activity.RequestCodes.REQUEST_SHARE_FORUM;
 import static org.briarproject.briar.api.forum.ForumConstants.MAX_FORUM_POST_BODY_LENGTH;
@@ -117,18 +116,15 @@ public class ForumActivity extends
 	public boolean onOptionsItemSelected(final MenuItem item) {
 		// Handle presses on the action bar items
 		switch (item.getItemId()) {
-			case R.id.action_forum_compose_post:
-				showTextInput(null);
-				return true;
 			case R.id.action_forum_share:
 				Intent i2 = new Intent(this, ShareForumActivity.class);
-				i2.setFlags(FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_SINGLE_TOP);
+				i2.setFlags(FLAG_ACTIVITY_CLEAR_TOP);
 				i2.putExtra(GROUP_ID, groupId.getBytes());
 				startActivityForResult(i2, REQUEST_SHARE_FORUM);
 				return true;
 			case R.id.action_forum_sharing_status:
 				Intent i3 = new Intent(this, ForumSharingStatusActivity.class);
-				i3.setFlags(FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_SINGLE_TOP);
+				i3.setFlags(FLAG_ACTIVITY_CLEAR_TOP);
 				i3.putExtra(GROUP_ID, groupId.getBytes());
 				startActivity(i3);
 				return true;

briar-android/src/main/java/org/briarproject/briar/android/forum/ForumControllerImpl.java

@@ -17,6 +17,7 @@ import org.briarproject.briar.android.controller.handler.ResultExceptionHandler;
 import org.briarproject.briar.android.forum.ForumController.ForumListener;
 import org.briarproject.briar.android.threaded.ThreadListControllerImpl;
 import org.briarproject.briar.api.android.AndroidNotificationManager;
+import org.briarproject.briar.api.client.MessageTracker;
 import org.briarproject.briar.api.client.MessageTracker.GroupCount;
 import org.briarproject.briar.api.forum.Forum;
 import org.briarproject.briar.api.forum.ForumInvitationResponse;
@@ -55,10 +56,10 @@ class ForumControllerImpl extends
 			LifecycleManager lifecycleManager, IdentityManager identityManager,
 			@CryptoExecutor Executor cryptoExecutor,
 			ForumManager forumManager, ForumSharingManager forumSharingManager,
-			EventBus eventBus, Clock clock,
+			EventBus eventBus, Clock clock, MessageTracker messageTracker,
 			AndroidNotificationManager notificationManager) {
 		super(dbExecutor, lifecycleManager, identityManager, cryptoExecutor,
-				eventBus, clock, notificationManager);
+				eventBus, clock, notificationManager, messageTracker);
 		this.forumManager = forumManager;
 		this.forumSharingManager = forumSharingManager;
 	}

briar-android/src/main/java/org/briarproject/briar/android/fragment/SFDialogFragment.java

@@ -3,7 +3,6 @@ package org.briarproject.briar.android.fragment;
 import android.app.Dialog;
 import android.content.DialogInterface;
 import android.os.Bundle;
-import android.support.annotation.Nullable;
 import android.support.v4.app.DialogFragment;
 import android.support.v7.app.AlertDialog;
 import android.text.TextUtils;
@@ -19,6 +18,8 @@ import org.briarproject.briar.android.activity.BaseActivity;
 
 import java.util.ArrayList;
 
+import javax.annotation.Nullable;
+
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
 public class SFDialogFragment extends DialogFragment {

briar-android/src/main/java/org/briarproject/briar/android/fragment/SignOutFragment.java

@@ -1,7 +1,6 @@
 package org.briarproject.briar.android.fragment;
 
 import android.os.Bundle;
-import android.support.annotation.Nullable;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -9,6 +8,8 @@ import android.view.ViewGroup;
 import org.briarproject.briar.R;
 import org.briarproject.briar.android.activity.ActivityComponent;
 
+import javax.annotation.Nullable;
+
 public class SignOutFragment extends BaseFragment {
 
 	private static final String TAG = SignOutFragment.class.getName();

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

@@ -37,6 +37,7 @@ import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static android.view.View.GONE;
+import static android.view.View.VISIBLE;
 import static org.briarproject.briar.android.activity.RequestCodes.REQUEST_GROUP_INVITE;
 import static org.briarproject.briar.api.privategroup.PrivateGroupConstants.MAX_GROUP_POST_BODY_LENGTH;
 
@@ -50,8 +51,8 @@ public class GroupActivity extends
 	GroupController controller;
 
 	private boolean isCreator, isDissolved = false;
-	private MenuItem writeMenuItem, revealMenuItem, inviteMenuItem,
+	private MenuItem revealMenuItem, inviteMenuItem, leaveMenuItem,
-			leaveMenuItem, dissolveMenuItem;
+			dissolveMenuItem;
 
 	@Override
 	public void injectActivity(ActivityComponent component) {
@@ -139,7 +140,6 @@ public class GroupActivity extends
 		MenuInflater inflater = getMenuInflater();
 		inflater.inflate(R.menu.group_actions, menu);
 
-		writeMenuItem = menu.findItem(R.id.action_group_compose_message);
 		revealMenuItem = menu.findItem(R.id.action_group_reveal);
 		inviteMenuItem = menu.findItem(R.id.action_group_invite);
 		leaveMenuItem = menu.findItem(R.id.action_group_leave);
@@ -152,9 +152,6 @@ public class GroupActivity extends
 	@Override
 	public boolean onOptionsItemSelected(final MenuItem item) {
 		switch (item.getItemId()) {
-			case R.id.action_group_compose_message:
-				showTextInput(null);
-				return true;
 			case R.id.action_group_member_list:
 				Intent i1 = new Intent(this, GroupMemberListActivity.class);
 				i1.putExtra(GROUP_ID, groupId.getBytes());
@@ -205,7 +202,6 @@ public class GroupActivity extends
 
 	private void setGroupEnabled(boolean enabled) {
 		isDissolved = !enabled;
-		if (writeMenuItem != null) writeMenuItem.setVisible(enabled);
 		textInput.setSendButtonEnabled(enabled);
 		list.getRecyclerView().setAlpha(enabled ? 1f : 0.5f);
 
@@ -213,6 +209,8 @@ public class GroupActivity extends
 			textInput.setVisibility(GONE);
 			if (textInput.isKeyboardOpen()) textInput.hideSoftKeyboard();
 			if (textInput.isEmojiDrawerOpen()) textInput.hideEmojiDrawer();
+		} else {
+			textInput.setVisibility(VISIBLE);
 		}
 	}
 
@@ -229,7 +227,6 @@ public class GroupActivity extends
 			leaveMenuItem.setVisible(true);
 			dissolveMenuItem.setVisible(false);
 		}
-		writeMenuItem.setVisible(!isDissolved);
 	}
 
 	private void showLeaveGroupDialog() {

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

@@ -17,6 +17,7 @@ import org.briarproject.briar.android.controller.handler.ResultExceptionHandler;
 import org.briarproject.briar.android.privategroup.conversation.GroupController.GroupListener;
 import org.briarproject.briar.android.threaded.ThreadListControllerImpl;
 import org.briarproject.briar.api.android.AndroidNotificationManager;
+import org.briarproject.briar.api.client.MessageTracker;
 import org.briarproject.briar.api.client.MessageTracker.GroupCount;
 import org.briarproject.briar.api.privategroup.GroupMember;
 import org.briarproject.briar.api.privategroup.GroupMessage;
@@ -60,9 +61,10 @@ class GroupControllerImpl extends
 			@CryptoExecutor Executor cryptoExecutor,
 			PrivateGroupManager privateGroupManager,
 			GroupMessageFactory groupMessageFactory, EventBus eventBus,
-			Clock clock, AndroidNotificationManager notificationManager) {
+			MessageTracker messageTracker, Clock clock,
+			AndroidNotificationManager notificationManager) {
 		super(dbExecutor, lifecycleManager, identityManager, cryptoExecutor,
-				eventBus, clock, notificationManager);
+				eventBus, clock, notificationManager, messageTracker);
 		this.privateGroupManager = privateGroupManager;
 		this.groupMessageFactory = groupMessageFactory;
 	}

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

@@ -1,7 +1,6 @@
 package org.briarproject.briar.android.privategroup.conversation;
 
 import android.support.annotation.LayoutRes;
-import android.support.annotation.Nullable;
 import android.support.annotation.UiThread;
 
 import org.briarproject.bramble.api.identity.Author;
@@ -12,6 +11,7 @@ import org.briarproject.briar.R;
 import org.briarproject.briar.android.threaded.ThreadItem;
 import org.briarproject.briar.api.privategroup.GroupMessageHeader;
 
+import javax.annotation.Nullable;
 import javax.annotation.concurrent.NotThreadSafe;
 
 @UiThread

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

@@ -2,7 +2,6 @@ package org.briarproject.briar.android.privategroup.creation;
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.annotation.Nullable;
 
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
@@ -14,6 +13,8 @@ import org.briarproject.briar.android.controller.handler.UiResultExceptionHandle
 import org.briarproject.briar.android.privategroup.conversation.GroupActivity;
 import org.briarproject.briar.android.sharing.BaseMessageFragment.MessageFragmentListener;
 
+import javax.annotation.Nullable;
+
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
 public class CreateGroupActivity extends BaseGroupInviteActivity implements

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

@@ -10,6 +10,7 @@ import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.EditText;
 
+import org.briarproject.bramble.util.StringUtils;
 import org.briarproject.briar.R;
 import org.briarproject.briar.android.activity.ActivityComponent;
 import org.briarproject.briar.android.fragment.BaseFragment;
@@ -84,9 +85,9 @@ public class CreateGroupFragment extends BaseFragment {
 
 	private void validateName() {
 		String name = this.name.getText().toString();
-		if (name.length() < 1 || name.length() > MAX_GROUP_NAME_LENGTH)
+		if (name.length() < 1 || StringUtils.utf8IsTooLong(name, MAX_GROUP_NAME_LENGTH))
 			button.setEnabled(false);
-		else if(!button.isEnabled())
+		else if (!button.isEnabled())
 			button.setEnabled(true);
 	}
 

briar-android/src/main/java/org/briarproject/briar/android/privategroup/memberlist/MemberListItem.java

@@ -1,7 +1,5 @@
 package org.briarproject.briar.android.privategroup.memberlist;
 
-import android.support.annotation.Nullable;
-
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.identity.Author;
 import org.briarproject.bramble.api.identity.Author.Status;
@@ -9,6 +7,7 @@ import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.briar.api.privategroup.GroupMember;
 import org.briarproject.briar.api.privategroup.Visibility;
 
+import javax.annotation.Nullable;
 import javax.annotation.concurrent.NotThreadSafe;
 
 @NotThreadSafe

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

@@ -146,7 +146,7 @@ public class BriarReportPrimer implements ReportPrimer {
 			NetworkInfo wifi = cm.getNetworkInfo(TYPE_WIFI);
 			boolean wifiAvailable = wifi != null && wifi.isAvailable();
 			// Is wifi enabled?
-			o = ctx.getSystemService(WIFI_SERVICE);
+			o = ctx.getApplicationContext().getSystemService(WIFI_SERVICE);
 			WifiManager wm = (WifiManager) o;
 			boolean wifiEnabled = wm != null &&
 					wm.getWifiState() == WIFI_STATE_ENABLED;

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

@@ -2,7 +2,6 @@ package org.briarproject.briar.android.sharing;
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.annotation.Nullable;
 import android.support.annotation.StringRes;
 import android.support.v7.widget.LinearLayoutManager;
 import android.view.MenuItem;
@@ -25,6 +24,7 @@ import java.util.Collection;
 import java.util.List;
 import java.util.logging.Logger;
 
+import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static java.util.logging.Level.WARNING;

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

@@ -30,8 +30,8 @@ public class SplashScreenActivity extends BaseActivity {
 	private static final Logger LOG =
 			Logger.getLogger(SplashScreenActivity.class.getName());
 
-	// This build expires on 1 May 2017
+	// This build expires on 1 June 2017
-	private static final long EXPIRY_DATE = 1493593200 * 1000L;
+	private static final long EXPIRY_DATE = 1496271600 * 1000L;
 
 	@Inject
 	protected ConfigController configController;

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

@@ -1,6 +1,6 @@
 package org.briarproject.briar.android.threaded;
 
-import android.support.annotation.Nullable;
+import android.os.Handler;
 import android.support.annotation.UiThread;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
@@ -14,6 +14,8 @@ import org.briarproject.briar.android.util.VersionedAdapter;
 
 import java.util.Collection;
 
+import javax.annotation.Nullable;
+
 import static android.support.v7.widget.RecyclerView.NO_POSITION;
 
 @UiThread
@@ -26,6 +28,7 @@ public class ThreadItemAdapter<I extends ThreadItem>
 	protected final NestedTreeList<I> items = new NestedTreeList<>();
 	private final ThreadItemListener<I> listener;
 	private final LinearLayoutManager layoutManager;
+	private final Handler handler = new Handler();
 
 	private volatile int revision = 0;
 
@@ -64,6 +67,17 @@ public class ThreadItemAdapter<I extends ThreadItem>
 		revision++;
 	}
 
+	void setItemWithIdVisible(MessageId messageId) {
+		int pos = 0;
+		for (I item : items) {
+			if (item.getId().equals(messageId)) {
+				layoutManager.scrollToPosition(pos);
+				break;
+			}
+			pos++;
+		}
+	}
+
 	public void setItems(Collection<I> items) {
 		this.items.clear();
 		this.items.addAll(items);
@@ -144,7 +158,7 @@ public class ThreadItemAdapter<I extends ThreadItem>
 	/**
 	 * Returns the position of the first unread item below the current viewport
 	 */
-	public int getVisibleUnreadPosBottom() {
+	int getVisibleUnreadPosBottom() {
 		final int positionBottom = layoutManager.findLastVisibleItemPosition();
 		if (positionBottom == NO_POSITION) return NO_POSITION;
 		for (int i = positionBottom + 1; i < items.size(); i++) {
@@ -156,7 +170,7 @@ public class ThreadItemAdapter<I extends ThreadItem>
 	/**
 	 * Returns the position of the first unread item above the current viewport
 	 */
-	public int getVisibleUnreadPosTop() {
+	int getVisibleUnreadPosTop() {
 		final int positionTop = layoutManager.findFirstVisibleItemPosition();
 		int position = NO_POSITION;
 		for (int i = 0; i < items.size(); i++) {

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

@@ -0,0 +1,15 @@
+package org.briarproject.briar.android.threaded;
+
+import org.briarproject.bramble.api.sync.MessageId;
+
+import java.util.List;
+
+import javax.annotation.Nullable;
+
+public interface ThreadItemList<I extends ThreadItem> extends List<I> {
+
+	@Nullable
+	MessageId getFirstVisibleItemId();
+
+	void setFirstVisibleId(@Nullable MessageId bottomVisibleItemId);
+}

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

@@ -0,0 +1,22 @@
+package org.briarproject.briar.android.threaded;
+
+import org.briarproject.bramble.api.sync.MessageId;
+
+import java.util.ArrayList;
+
+import javax.annotation.Nullable;
+
+public class ThreadItemListImpl<I extends ThreadItem> extends ArrayList<I>
+		implements ThreadItemList<I> {
+
+	private MessageId bottomVisibleItemId;
+
+	@Override
+	public MessageId getFirstVisibleItemId() {
+		return bottomVisibleItemId;
+	}
+
+	public void setFirstVisibleId(@Nullable MessageId bottomVisibleItemId) {
+		this.bottomVisibleItemId = bottomVisibleItemId;
+	}
+}

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

@@ -3,7 +3,6 @@ package org.briarproject.briar.android.threaded;
 import android.content.Intent;
 import android.os.Bundle;
 import android.support.annotation.CallSuper;
-import android.support.annotation.Nullable;
 import android.support.annotation.StringRes;
 import android.support.annotation.UiThread;
 import android.support.design.widget.Snackbar;
@@ -26,6 +25,7 @@ import org.briarproject.briar.android.controller.SharingController;
 import org.briarproject.briar.android.controller.SharingController.SharingListener;
 import org.briarproject.briar.android.controller.handler.UiResultExceptionHandler;
 import org.briarproject.briar.android.threaded.ThreadItemAdapter.ThreadItemListener;
+import org.briarproject.briar.android.threaded.ThreadListController.ThreadListDataSource;
 import org.briarproject.briar.android.threaded.ThreadListController.ThreadListListener;
 import org.briarproject.briar.android.view.BriarRecyclerView;
 import org.briarproject.briar.android.view.TextInputView;
@@ -38,13 +38,12 @@ import org.thoughtcrime.securesms.components.KeyboardAwareLinearLayout;
 import java.util.Collection;
 import java.util.logging.Logger;
 
+import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static android.support.design.widget.Snackbar.make;
 import static android.support.v7.widget.RecyclerView.NO_POSITION;
 import static android.support.v7.widget.RecyclerView.SCROLL_STATE_IDLE;
-import static android.view.View.GONE;
-import static android.view.View.VISIBLE;
 import static java.util.logging.Level.INFO;
 import static org.briarproject.briar.android.threaded.ThreadItemAdapter.UnreadCount;
 
@@ -53,9 +52,8 @@ import static org.briarproject.briar.android.threaded.ThreadItemAdapter.UnreadCo
 public abstract class ThreadListActivity<G extends NamedGroup, A extends ThreadItemAdapter<I>, I extends ThreadItem, H extends PostHeader>
 		extends BriarActivity
 		implements ThreadListListener<H>, TextInputListener, SharingListener,
-		ThreadItemListener<I> {
+		ThreadItemListener<I>, ThreadListDataSource {
 
-	protected static final String KEY_INPUT_VISIBILITY = "inputVisibility";
 	protected static final String KEY_REPLY_ID = "replyId";
 
 	private static final Logger LOG =
@@ -71,6 +69,7 @@ public abstract class ThreadListActivity<G extends NamedGroup, A extends ThreadI
 	private MessageId replyId;
 
 	protected abstract ThreadListController<G, I, H> getController();
+
 	@Inject
 	protected SharingController sharingController;
 
@@ -89,7 +88,6 @@ public abstract class ThreadListActivity<G extends NamedGroup, A extends ThreadI
 		getController().setGroupId(groupId);
 
 		textInput = (TextInputView) findViewById(R.id.text_input_container);
-		textInput.setVisibility(GONE);
 		textInput.setListener(this);
 		list = (BriarRecyclerView) findViewById(R.id.list);
 		layoutManager = new LinearLayoutManager(this);
@@ -108,6 +106,7 @@ public abstract class ThreadListActivity<G extends NamedGroup, A extends ThreadI
 							updateUnreadCount();
 						}
 					}
+
 					@Override
 					public void onScrollStateChanged(RecyclerView recyclerView,
 							int newState) {
@@ -148,6 +147,18 @@ public abstract class ThreadListActivity<G extends NamedGroup, A extends ThreadI
 		loadSharingContacts();
 	}
 
+	@Override
+	@Nullable
+	public MessageId getFirstVisibleMessageId() {
+		if (layoutManager != null && adapter != null) {
+			int position =
+					layoutManager.findFirstVisibleItemPosition();
+			I i = adapter.getItemAt(position);
+			return i == null ? null : i.getId();
+		}
+		return null;
+	}
+
 	protected abstract A createAdapter(LinearLayoutManager layoutManager);
 
 	protected void loadNamedGroup() {
@@ -171,18 +182,17 @@ public abstract class ThreadListActivity<G extends NamedGroup, A extends ThreadI
 	protected void loadItems() {
 		final int revision = adapter.getRevision();
 		getController().loadItems(
-				new UiResultExceptionHandler<Collection<I>, DbException>(this) {
+				new UiResultExceptionHandler<ThreadItemList<I>, DbException>(
+						this) {
 					@Override
-					public void onResultUi(Collection<I> items) {
+					public void onResultUi(ThreadItemList<I> items) {
 						if (revision == adapter.getRevision()) {
 							adapter.incrementRevision();
 							if (items.isEmpty()) {
 								list.showData();
 							} else {
-								adapter.setItems(items);
+								initList(items);
-								list.showData();
+								updateTextInput(replyId);
-								if (replyId != null)
-									adapter.setHighlightedItem(replyId);
 							}
 						} else {
 							LOG.info("Concurrent update, reloading");
@@ -197,6 +207,15 @@ public abstract class ThreadListActivity<G extends NamedGroup, A extends ThreadI
 				});
 	}
 
+	private void initList(final ThreadItemList<I> items) {
+		adapter.setItems(items);
+		MessageId messageId = items.getFirstVisibleItemId();
+		if (messageId != null)
+			adapter.setItemWithIdVisible(messageId);
+		updateUnreadCount();
+		list.showData();
+	}
+
 	protected void loadSharingContacts() {
 		getController().loadSharingContacts(
 				new UiResultExceptionHandler<Collection<ContactId>, DbException>(
@@ -231,18 +250,9 @@ public abstract class ThreadListActivity<G extends NamedGroup, A extends ThreadI
 		list.stopPeriodicUpdate();
 	}
 
-	@Override
-	protected void onRestoreInstanceState(Bundle savedInstanceState) {
-		super.onRestoreInstanceState(savedInstanceState);
-		boolean visible = savedInstanceState.getBoolean(KEY_INPUT_VISIBILITY);
-		textInput.setVisibility(visible ? VISIBLE : GONE);
-	}
-
 	@Override
 	protected void onSaveInstanceState(Bundle outState) {
 		super.onSaveInstanceState(outState);
-		boolean visible = textInput.getVisibility() == VISIBLE;
-		outState.putBoolean(KEY_INPUT_VISIBILITY, visible);
 		ThreadItem replyItem = adapter.getHighlightedItem();
 		if (replyItem != null) {
 			outState.putByteArray(KEY_REPLY_ID, replyItem.getId().getBytes());
@@ -262,9 +272,8 @@ public abstract class ThreadListActivity<G extends NamedGroup, A extends ThreadI
 
 	@Override
 	public void onBackPressed() {
-		if (textInput.getVisibility() == VISIBLE) {
+		if (adapter.getHighlightedItem() != null) {
-			textInput.setVisibility(GONE);
+			updateTextInput(null);
-			adapter.setHighlightedItem(null);
 		} else {
 			super.onBackPressed();
 		}
@@ -280,7 +289,7 @@ public abstract class ThreadListActivity<G extends NamedGroup, A extends ThreadI
 
 	@Override
 	public void onReplyClick(final I item) {
-		showTextInput(item);
+		updateTextInput(item.getId());
 		if (textInput.isKeyboardOpen()) {
 			scrollToItemAtTop(item);
 		} else {
@@ -330,20 +339,15 @@ public abstract class ThreadListActivity<G extends NamedGroup, A extends ThreadI
 		snackbar.show();
 	}
 
-	protected void showTextInput(@Nullable I replyItem) {
+	private void updateTextInput(@Nullable MessageId replyItemId) {
-		// An animation here would be an overkill because of the keyboard
+		if (replyItemId != null) {
-		// popping up.
+			textInput.setHint(R.string.forum_message_reply_hint);
-		// only clear the text when the input container was not visible
+			textInput.requestFocus();
-		if (textInput.getVisibility() != VISIBLE) {
+			textInput.showSoftKeyboard();
-			textInput.setVisibility(VISIBLE);
+		} else {
-			textInput.setText("");
+			textInput.setHint(R.string.forum_new_message_hint);
 		}
-		textInput.requestFocus();
+		adapter.setHighlightedItem(replyItemId);
-		textInput.showSoftKeyboard();
-		textInput.setHint(replyItem == null ? R.string.forum_new_message_hint :
-				R.string.forum_message_reply_hint);
-		adapter.setHighlightedItem(
-				replyItem == null ? null : replyItem.getId());
 	}
 
 	@Override
@@ -369,9 +373,8 @@ public abstract class ThreadListActivity<G extends NamedGroup, A extends ThreadI
 				};
 		getController().createAndStoreMessage(text, replyItem, handler);
 		textInput.hideSoftKeyboard();
-		textInput.setVisibility(GONE);
 		textInput.setText("");
-		adapter.setHighlightedItem(null);
+		updateTextInput(null);
 	}
 
 	protected abstract int getMaxBodyLength();

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

@@ -6,6 +6,7 @@ import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
+import org.briarproject.bramble.api.sync.MessageId;
 import org.briarproject.briar.android.DestroyableContext;
 import org.briarproject.briar.android.controller.ActivityLifecycleController;
 import org.briarproject.briar.android.controller.handler.ExceptionHandler;
@@ -30,7 +31,7 @@ public interface ThreadListController<G extends NamedGroup, I extends ThreadItem
 
 	void loadItem(H header, ResultExceptionHandler<I, DbException> handler);
 
-	void loadItems(ResultExceptionHandler<Collection<I>, DbException> handler);
+	void loadItems(ResultExceptionHandler<ThreadItemList<I>, DbException> handler);
 
 	void markItemRead(I item);
 
@@ -41,7 +42,7 @@ public interface ThreadListController<G extends NamedGroup, I extends ThreadItem
 
 	void deleteNamedGroup(ExceptionHandler<DbException> handler);
 
-	interface ThreadListListener<H> extends DestroyableContext {
+	interface ThreadListListener<H> extends ThreadListDataSource {
 		@UiThread
 		void onHeaderReceived(H header);
 
@@ -52,4 +53,10 @@ public interface ThreadListController<G extends NamedGroup, I extends ThreadItem
 		void onInvitationAccepted(ContactId c);
 	}
 
+	interface ThreadListDataSource extends DestroyableContext {
+
+		@UiThread @Nullable
+		MessageId getFirstVisibleMessageId();
+	}
+
 }

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

@@ -22,14 +22,13 @@ import org.briarproject.briar.android.controller.handler.ExceptionHandler;
 import org.briarproject.briar.android.controller.handler.ResultExceptionHandler;
 import org.briarproject.briar.android.threaded.ThreadListController.ThreadListListener;
 import org.briarproject.briar.api.android.AndroidNotificationManager;
+import org.briarproject.briar.api.client.MessageTracker;
 import org.briarproject.briar.api.client.NamedGroup;
 import org.briarproject.briar.api.client.PostHeader;
 import org.briarproject.briar.api.client.ThreadedMessage;
 
-import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
-import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.Executor;
@@ -55,18 +54,21 @@ public abstract class ThreadListControllerImpl<G extends NamedGroup, I extends T
 	protected final AndroidNotificationManager notificationManager;
 	protected final Executor cryptoExecutor;
 	protected final Clock clock;
+	private final MessageTracker messageTracker;
 	protected volatile L listener;
 
 	protected ThreadListControllerImpl(@DatabaseExecutor Executor dbExecutor,
 			LifecycleManager lifecycleManager, IdentityManager identityManager,
 			@CryptoExecutor Executor cryptoExecutor, EventBus eventBus,
-			Clock clock, AndroidNotificationManager notificationManager) {
+			Clock clock, AndroidNotificationManager notificationManager,
+			MessageTracker messageTracker) {
 		super(dbExecutor, lifecycleManager);
 		this.identityManager = identityManager;
 		this.cryptoExecutor = cryptoExecutor;
 		this.notificationManager = notificationManager;
 		this.clock = clock;
 		this.eventBus = eventBus;
+		this.messageTracker = messageTracker;
 	}
 
 	@Override
@@ -97,6 +99,19 @@ public abstract class ThreadListControllerImpl<G extends NamedGroup, I extends T
 
 	@Override
 	public void onActivityDestroy() {
+		dbExecutor.execute(new Runnable() {
+			@Override
+			public void run() {
+				try {
+					messageTracker
+							.storeMessageId(groupId,
+									listener.getFirstVisibleMessageId());
+				} catch (DbException e) {
+					if (LOG.isLoggable(WARNING))
+						LOG.log(WARNING, e.toString(), e);
+				}
+			}
+		});
 	}
 
 	@CallSuper
@@ -144,7 +159,7 @@ public abstract class ThreadListControllerImpl<G extends NamedGroup, I extends T
 
 	@Override
 	public void loadItems(
-			final ResultExceptionHandler<Collection<I>, DbException> handler) {
+			final ResultExceptionHandler<ThreadItemList<I>, DbException> handler) {
 		checkGroupId();
 		runOnDbThread(new Runnable() {
 			@Override
@@ -293,11 +308,16 @@ public abstract class ThreadListControllerImpl<G extends NamedGroup, I extends T
 	@DatabaseExecutor
 	protected abstract void deleteNamedGroup(G groupItem) throws DbException;
 
-	private List<I> buildItems(Collection<H> headers) {
+	private ThreadItemList<I> buildItems(Collection<H> headers)
-		List<I> items = new ArrayList<>();
+			throws DbException {
+		ThreadItemList<I> items = new ThreadItemListImpl<>();
 		for (H h : headers) {
 			items.add(buildItem(h, bodyCache.get(h.getId())));
 		}
+		MessageId msgId = messageTracker.loadStoredMessageId(groupId);
+		if (LOG.isLoggable(INFO))
+			LOG.info("Loaded last top visible message id " + msgId);
+		items.setFirstVisibleId(msgId);
 		return items;
 	}
 

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

@@ -1,7 +1,6 @@
 package org.briarproject.briar.android.util;
 
 import android.content.Context;
-import android.support.annotation.Nullable;
 import android.support.design.widget.TextInputLayout;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.content.ContextCompat;
@@ -23,6 +22,8 @@ import org.briarproject.briar.R;
 import org.briarproject.briar.android.view.ArticleMovementMethod;
 import org.briarproject.briar.android.widget.LinkDialogFragment;
 
+import javax.annotation.Nullable;
+
 import static android.text.format.DateUtils.DAY_IN_MILLIS;
 import static android.text.format.DateUtils.FORMAT_ABBREV_MONTH;
 import static android.text.format.DateUtils.FORMAT_ABBREV_RELATIVE;

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

@@ -2,7 +2,6 @@ package org.briarproject.briar.android.view;
 
 import android.content.Context;
 import android.content.res.TypedArray;
-import android.support.annotation.Nullable;
 import android.support.annotation.UiThread;
 import android.support.design.widget.FloatingActionButton;
 import android.util.AttributeSet;
@@ -13,6 +12,8 @@ import android.widget.TextView;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.briar.R;
 
+import javax.annotation.Nullable;
+
 @UiThread
 @NotNullByDefault
 public class UnreadMessageButton extends FrameLayout {
@@ -36,8 +37,7 @@ public class UnreadMessageButton extends FrameLayout {
 
 		LayoutInflater inflater = (LayoutInflater) context
 				.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
-		inflater
+		inflater.inflate(R.layout.unread_message_button, this, true);
-				.inflate(R.layout.unread_message_button, this, true);
 
 		fab = (FloatingActionButton) findViewById(R.id.fab);
 		unread = (TextView) findViewById(R.id.unreadCountView);
@@ -64,15 +64,11 @@ public class UnreadMessageButton extends FrameLayout {
 
 	public void setUnreadCount(int count) {
 		if (count == 0) {
-			fab.setVisibility(GONE);
+			setVisibility(INVISIBLE);
-//			fab.hide();
-			unread.setVisibility(GONE);
 		} else {
 			// FIXME: Use animations when upgrading to support library 24.2.0
 			//        https://code.google.com/p/android/issues/detail?id=216469
-			fab.setVisibility(VISIBLE);
+			setVisibility(VISIBLE);
-//			if (!fab.isShown()) fab.show();
-			unread.setVisibility(VISIBLE);
 			unread.setText(String.valueOf(count));
 		}
 	}

briar-android/src/main/res/drawable/chevron48dp_down.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportHeight="48.0"
-        android:viewportWidth="48.0">
-	<path
-		android:fillColor="#06b9ff"
-		android:pathData="M9.1,19.3l14.9,11.8l14.9,-11.8l-1.9,-2.4l-13,10.4l-13,-10.4z"/>
-</vector>

briar-android/src/main/res/drawable/chevron48dp_up.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportHeight="48.0"
-        android:viewportWidth="48.0">
-	<path
-		android:fillColor="#06b9ff"
-		android:pathData="M38.9,28.7l-14.9,-11.8l-14.9,11.8l1.9,2.4l13,-10.4l13,10.4z"/>
-</vector>

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

@@ -7,7 +7,7 @@
 
 	<path
 		android:fillColor="#ffa500"
-		android:pathData="M0,8.88178e-16 L30,8.88178e-16 L30,30 L0,30 L0,8.88178e-16 Z"/>
+		android:pathData="M0,0 L30,0 L30,30 L0,30 L0,0 Z"/>
 	<path
 		android:fillColor="#ffffff"
 		android:pathData="M8.9322,18.0339 C10.6078,18.0339,11.9661,19.3922,11.9661,21.0678

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

@@ -5,5 +5,5 @@
 
 	<stroke
 		android:width="2dp"
-		android:color="@color/forum_discussion_nested_line"/>
+		android:color="@color/thread_indicator"/>
 </shape>

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

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-	<item android:drawable="@drawable/chevron48dp_down" android:state_selected="true"/>
-	<item android:drawable="@drawable/chevron48dp_up"/>
-</selector>

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

@@ -12,9 +12,9 @@
 		android:fillColor="#87c214"
 		android:pathData="M64.9004,0 C55.2004,0,47.1992,7.99922,47.1992,17.6992 L47.1992,40.1992
 L90.8008,40.1992 L90.8008,17.6992
-C90.8008,7.99922,82.8992,-4.73695e-15,73.1992,0 L64.9004,0 Z M161.9,0
+C90.8008,7.99922,82.8992,0,73.1992,0 L64.9004,0 Z M161.9,0
 C152.2,0,144.199,7.99922,144.199,17.6992 L144.199,137.199 L187.801,137.199
-L187.801,17.6992 C187.801,7.99922,179.899,-4.73695e-15,170.199,0 L161.9,0 Z
+L187.801,17.6992 C187.801,7.99922,179.899,0,170.199,0 L161.9,0 Z
 M47.1992,97.8008 L47.1992,217.301 C47.1992,227.001,55.1004,235,64.9004,235
 L73.1992,235 C82.8992,235,90.9004,227.001,90.9004,217.301 L90.9004,97.8008
 L47.1992,97.8008 Z M144.199,194.801 L144.199,217.301
@@ -25,12 +25,12 @@ C179.899,235,187.9,227.001,187.9,217.301 L187.9,194.801 L144.199,194.801 Z"/>
 		android:pathData="M144.2,144.2 L187.9,144.2 L187.9,187.9 L144.2,187.9 L144.2,144.2 Z"/>
 	<path
 		android:fillColor="#95d220"
-		android:pathData="M17.6992,47.1992 C7.99922,47.1992,2.36848e-15,55.1004,0,64.9004 L0,73.1992
+		android:pathData="M17.6992,47.1992 C7.99922,47.1992,0,55.1004,0,64.9004 L0,73.1992
 C0,82.8992,7.89922,90.9004,17.6992,90.9004 L137.199,90.9004 L137.199,47.1992
 L17.6992,47.1992 Z M194.801,47.1992 L194.801,90.9004 L217.301,90.9004
 C227.001,90.9004,235,82.9992,235,73.1992 L235,64.9004
 C235,55.1004,227.001,47.1992,217.301,47.1992 L194.801,47.1992 Z M17.6992,144.199
-C7.99922,144.199,2.36848e-15,152.1,0,161.9 L0,170.199
+C7.99922,144.199,0,152.1,0,161.9 L0,170.199
 C0,179.899,7.89922,187.9,17.6992,187.9 L40.1992,187.9 L40.1992,144.199
 L17.6992,144.199 Z M97.8008,144.199 L97.8008,187.9 L217.301,187.9
 C227.001,187.9,235,179.899,235,170.199 L235,161.9

briar-android/src/main/res/menu/forum_actions.xml

@@ -3,12 +3,6 @@
 	xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto">
 
-	<item
-		android:id="@+id/action_forum_compose_post"
-		android:icon="@drawable/forum_item_create_white"
-		android:title="@string/forum_compose_post"
-		app:showAsAction="always"/>
-
 	<item
 		android:id="@+id/action_forum_share"
 		android:icon="@drawable/social_share_white"

briar-android/src/main/res/menu/group_actions.xml

@@ -3,12 +3,6 @@
 	xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto">
 
-	<item
-		android:id="@+id/action_group_compose_message"
-		android:icon="@drawable/forum_item_create_white"
-		android:title="@string/groups_compose_message"
-		app:showAsAction="always"/>
-
 	<item
 		android:id="@+id/action_group_member_list"
 		android:icon="@drawable/ic_group_white"

briar-android/src/main/res/values-de/strings.xml

@@ -151,7 +151,6 @@
   <string name="groups_create_group_invitation_button">Einladung schicken</string>
   <string name="groups_create_group_hint">Gebe Deiner privaten Gruppe einen Namen</string>
   <string name="groups_invitation_sent">Gruppeneinladung versendet</string>
-  <string name="groups_compose_message">Nachricht erstellen</string>
   <string name="groups_message_sent">Nachricht gesendet</string>
   <string name="groups_member_list">Mitglieder</string>
   <string name="groups_invite_members">Mitglieder einladen</string>
@@ -174,14 +173,22 @@
   <string name="groups_invitations_invitation_received">%1$s hat dich eingeladen der Gruppe \"%2$s\" beizutreten.</string>
   <string name="groups_invitations_joined">Gruppe beigetreten</string>
   <string name="groups_invitations_declined">Gruppeneinladung abgelehnt</string>
+  <plurals name="groups_invitations_open">
+    <item quantity="one">%d offene Gruppeneinladung</item>
+    <item quantity="other">%d offene Gruppeneinladungen</item>
+  </plurals>
   <string name="groups_invitations_response_accepted_sent">Gruppeneinladung von %s angenommen.</string>
   <string name="groups_invitations_response_declined_sent">Gruppeneinladung von %s abgelehnt.</string>
   <string name="groups_invitations_response_accepted_received">%s hat die Einladung zur Gruppe angenommen.</string>
   <string name="groups_invitations_response_declined_received">%s hat die Einladung zur Gruppe abgelehnt.</string>
+  <string name="sharing_status_groups">Nur der Ersteller kann neue Mitglieder zu einer Gruppe einladen. HIer alle aktuellen Mitglieder dieser Gruppe.</string>
   <!--Private Groups Revealing Contacts-->
   <string name="groups_reveal_contacts">Kontakte teilen</string>
   <string name="groups_reveal_dialog_message">Kontakte können mit allen derzeitigen und zukünftigen Mitgliedern dieser Gruppe geteilt werden.\n\nDas beschleunigt die Verbindung zu der Gruppe und macht sie zusätzlich zuverlässiger, da Kommunikation mit den Mitgliedern auch dann erfolgen kann, wenn der Ersteller der Gruppe offline ist.</string>
   <string name="groups_reveal_visible">Verbindung zum Kontakt ist für die Gruppe sichtbar</string>
+  <string name="groups_reveal_visible_revealed_by_us">Beziehung zum Kontakt ist für diese Gruppe sichtbar (selbst offengelegt)</string>
+  <string name="groups_reveal_visible_revealed_by_contact">Beziehung zum Kontakt ist für diese Gruppe sichtbar (offengelegt durch %s)</string>
+  <string name="groups_reveal_invisible">Beziehung zum Kontakt ist für diese Gruppe nicht sichtbar</string>
   <!--Forums-->
   <string name="no_forums">Du hast noch keine Foren.\n\nWarum erstellst du nicht einfach selbst ein neues Forum, indem du auf das \"+\"-Icon am oberen Bildschirmrand tippst?\n\nDu kannst auch deine Kontakte auffordern, Foren mit dir zu teilen.</string>
   <string name="create_forum_title">Neues Forum</string>
@@ -194,15 +201,10 @@
     <item quantity="one">%d Beitrag</item>
     <item quantity="other">%d Beiträge</item>
   </plurals>
-  <string name="forum_compose_post">Neuer Forenbeitrag</string>
   <string name="forum_new_entry_posted">Forenbeitrag wurde veröffentlicht.</string>
   <string name="forum_new_message_hint">Neuer Eintrag</string>
   <string name="forum_message_reply_hint">Neue Antwort</string>
   <string name="btn_reply">Antworten</string>
-  <plurals name="message_replies">
-    <item quantity="one">%1$d Antwort</item>
-    <item quantity="other">%1$d Antworten</item>
-  </plurals>
   <string name="forum_leave">Forum verlassen</string>
   <string name="dialog_title_leave_forum">Verlassen des Forums bestätigen</string>
   <string name="dialog_message_leave_forum">Bist du sicher, dass du dieses Forum verlassen willst? Kontakte, die du mit diesem Forum geteilt hast, werden keine Updates von diesem Forum mehr bekommen.</string>
@@ -229,6 +231,8 @@
   <string name="forum_invitation_response_accepted_received">%s hat die Forumeinladung akzeptiert.</string>
   <string name="forum_invitation_response_declined_received">%s hat die Forumseinladung abgelehnt.</string>
   <string name="sharing_status">Sharing Status</string>
+  <string name="sharing_status_forum">Jedes Mitglied eines Forums kann dieses mit seinen Kontakten teilen. Du teilst dieses Forum mit den folgenden Kontakten. Möglicherweise gibt es Mitglieder die nicht sichtbar sind.</string>
+  <string name="shared_with">Geteilt mit %1$d (%2$d online)</string>
   <plurals name="forums_shared">
     <item quantity="one">%d Forum von Kontaken geteilt</item>
     <item quantity="other">%d Foren von Kontakten geteilt</item>
@@ -265,6 +269,7 @@
   <string name="blogs_sharing_invitations_title">Blogeinladungen</string>
   <string name="blogs_sharing_joined_toast">Blog abonniert</string>
   <string name="blogs_sharing_declined_toast">Blogeinladung abgelehnt</string>
+  <string name="sharing_status_blog">Jeder Abonnent eines Blogs kann diesen mit seinen Kontakten teilen. Du teilst diesen Blog mit den folgenden Kontakten. Möglicherweise gibt es Abonnenten die nicht sichtbar sind.</string>
   <!--RSS Feeds-->
   <string name="blogs_rss_feeds_import">RSS-Feed importieren</string>
   <string name="blogs_rss_feeds_import_button">Importieren</string>
@@ -274,6 +279,9 @@
   <string name="blogs_rss_feeds_manage_imported">Importiert:</string>
   <string name="blogs_rss_feeds_manage_author">Autor:</string>
   <string name="blogs_rss_feeds_manage_updated">Letzte Aktualisierung:</string>
+  <string name="blogs_rss_remove_feed">Feed entfernen</string>
+  <string name="blogs_rss_remove_feed_dialog_message">Soll der Feed mit allen Posts wirklich gelöscht werden?\nGeteilte Posts werden dabei nicht von anderen Geräten gelöscht.</string>
+  <string name="blogs_rss_remove_feed_ok">Feed entfernen</string>
   <string name="blogs_rss_feeds_manage_delete_error">Der Feed konnte nicht gelöscht werden!</string>
   <string name="blogs_rss_feeds_manage_empty_state">Du hast bisher noch keine RSS Feeds importiert. Tippe auf das \"+\"-Icon am oberen Bildschirmrand um einen neuen Feed hinzuzufügen.</string>
   <string name="blogs_rss_feeds_manage_error">Es gab ein Problem beim Laden deiner Feeds. Bitte versuche es später erneut.</string>
@@ -282,6 +290,10 @@
   <string name="bluetooth_setting">Über Bluetooth verbinden</string>
   <string name="bluetooth_setting_enabled">Sobald Kontakte in der Nähe sind</string>
   <string name="bluetooth_setting_disabled">Nur beim Hinzufügen von Kontakten</string>
+  <string name="tor_network_setting">Über Tor verbinden</string>
+  <string name="tor_network_setting_never">Nie</string>
+  <string name="tor_network_setting_wifi">Nur WLAN</string>
+  <string name="tor_network_setting_always">WLAN oder mobile Datenverbindung</string>
   <!--Settings Security and Panic-->
   <string name="security_settings_title">Sicherheit</string>
   <string name="change_password">Passwort ändern</string>
@@ -341,4 +353,9 @@
   <string name="dev_report_saved">Der Bericht wurde gespeichert. Er wird verschickt, wenn Du Dich das nächste Mal bei Briar anmeldest.</string>
   <!--Sign Out-->
   <string name="progress_title_logout">Von Briar abmelden ...</string>
+  <!--Screen Filters & Tapjacking-->
+  <string name="screen_filter_title">Bildschirmfilter erkannt</string>
+  <string name="screen_filter_body">Diese Apps können andere Apps überlagern:\n\n%1$s \n\nBriar reagiert im Fall einer Überlagerung nicht auf Benutzereingaben.
+Falls dadurch Probleme in der Verwendung von Briar entstehen, versuche diese Apps zu deaktivieren.\n</string>
+  <string name="checkbox_dont_show_again">Nicht noch einmal für diese Apps warnen</string>
 </resources>

briar-android/src/main/res/values-es/strings.xml

@@ -151,7 +151,6 @@
   <string name="groups_create_group_invitation_button">Enviar invitación</string>
   <string name="groups_create_group_hint">Dar nombre al grupo privado</string>
   <string name="groups_invitation_sent">Se ha mandado la invitación de grupo</string>
-  <string name="groups_compose_message">Escribir mensaje</string>
   <string name="groups_message_sent">Mensaje enviado</string>
   <string name="groups_member_list">Integrantes</string>
   <string name="groups_invite_members">Invitar miembros</string>
@@ -182,6 +181,7 @@
   <string name="groups_invitations_response_declined_sent">Declinaste la invitación de grupo de %s.</string>
   <string name="groups_invitations_response_accepted_received">%s ha aceptado la invitación al grupo.</string>
   <string name="groups_invitations_response_declined_received">%s ha declinado la invitación al grupo.</string>
+  <string name="sharing_status_groups">Solo el creador puede invitar nuevos miembros al grupo. Abajo se listan todos los participantes actuales.</string>
   <!--Private Groups Revealing Contacts-->
   <string name="groups_reveal_contacts">Revelar contactos</string>
   <string name="groups_reveal_dialog_message">Puedes elegir si revelar los contactos a los actuales y futuros integrantes de este grupo.\n\nRevelar los contactos mejora la velocidad y la fiabilidad de tu conexión, porque puedes comunicarte con los contactos revelados incluso cuando el creador del grupo no se encuentra conectado.</string>
@@ -201,15 +201,10 @@
     <item quantity="one">%d publicación</item>
     <item quantity="other">%d publicaciones</item>
   </plurals>
-  <string name="forum_compose_post">Nueva publicación en el foro</string>
   <string name="forum_new_entry_posted">Entrada en el foro publicada</string>
   <string name="forum_new_message_hint">Nueva entrada</string>
   <string name="forum_message_reply_hint">Nueva respuesta</string>
   <string name="btn_reply">Responder</string>
-  <plurals name="message_replies">
-    <item quantity="one">%1$d respuesta</item>
-    <item quantity="other">%1$d respuestas</item>
-  </plurals>
   <string name="forum_leave">Abandonar foro</string>
   <string name="dialog_title_leave_forum">Confirmación abandono del foro</string>
   <string name="dialog_message_leave_forum">¿Seguro que quieres abandonar el foro? Puede que los contactos que invitaste al foro dejen de recibir actualizaciones del mismo.</string>
@@ -236,6 +231,7 @@
   <string name="forum_invitation_response_accepted_received">%s aceptó la invitación al foro.</string>
   <string name="forum_invitation_response_declined_received">%s rechazó la invitación al foro.</string>
   <string name="sharing_status">Estado de la compartición</string>
+  <string name="sharing_status_forum">Cualquier miembro de un foro puede compartirlo con sus contactos. Estás compartiendo este foro con los contactos listados a continuación. Puede haber otros miembros que no puedes ver.</string>
   <string name="shared_with">Compartido con %1$d (%2$d en línea)</string>
   <plurals name="forums_shared">
     <item quantity="one">%d foro compartido por contactos</item>
@@ -273,6 +269,7 @@
   <string name="blogs_sharing_invitations_title">Invitaciones a blogs</string>
   <string name="blogs_sharing_joined_toast">Suscrito al blog</string>
   <string name="blogs_sharing_declined_toast">Rechazada invitación al blog</string>
+  <string name="sharing_status_blog">Cualquiera que se suscriba a un blog puede compartirlo con sus contactos. Estás compartiendo este blog con contactos listados a continuación. Puede haber otros suscriptores que no puedes ver.</string>
   <!--RSS Feeds-->
   <string name="blogs_rss_feeds_import">Importar canal RSS</string>
   <string name="blogs_rss_feeds_import_button">Importar</string>
@@ -282,6 +279,9 @@
   <string name="blogs_rss_feeds_manage_imported">Importado:</string>
   <string name="blogs_rss_feeds_manage_author">Autor:</string>
   <string name="blogs_rss_feeds_manage_updated">Última actualización:</string>
+  <string name="blogs_rss_remove_feed">Eliminar canal RSS</string>
+  <string name="blogs_rss_remove_feed_dialog_message">¿Seguro que quieres borrar este canal RSS y todas sus publicaciones?\nNo se eliminará ningún artículo que hayas compartido de los dispositivos de otras personas.</string>
+  <string name="blogs_rss_remove_feed_ok">Eliminar canal RSS</string>
   <string name="blogs_rss_feeds_manage_delete_error">¡El canal no pudo ser eliminado!</string>
   <string name="blogs_rss_feeds_manage_empty_state">No has importado ningún canal RSS.\n\n¿Por qué no pulsas el signo más de la esquina superior derecha para añadir el primero?</string>
   <string name="blogs_rss_feeds_manage_error">Hubo un problema cargando tus canales RSS. Por favor, prueba más tarde.</string>
@@ -290,6 +290,10 @@
   <string name="bluetooth_setting">Connectar mediante Bluetooth</string>
   <string name="bluetooth_setting_enabled">Cuando haya contactos cerca</string>
   <string name="bluetooth_setting_disabled">Solo al añadir contactos</string>
+  <string name="tor_network_setting">Conectar a través de Tor</string>
+  <string name="tor_network_setting_never">Nunca</string>
+  <string name="tor_network_setting_wifi">Solo con wifi</string>
+  <string name="tor_network_setting_always">Con wifi o datos móviles</string>
   <!--Settings Security and Panic-->
   <string name="security_settings_title">Seguridad</string>
   <string name="change_password">Cambiar contraseña</string>
@@ -349,4 +353,9 @@
   <string name="dev_report_saved">Informe guardado. Se enviará la próxima vez que inicies Briar.</string>
   <!--Sign Out-->
   <string name="progress_title_logout">Saliendo de Briar…</string>
+  <!--Screen Filters & Tapjacking-->
+  <string name="screen_filter_title">Filtro de pantalla detectado</string>
+  <string name="screen_filter_body">Las siguientes aplicaciones pueden mostrarse por encima de otras:\n\n%1$s \n\nBriar no reaccionará a los toques mientras otra aplicación se muestre encima.
+Si experiencia algún problema, pruebe a desactivar esas aplicaciones cuando use Briar.\n</string>
+  <string name="checkbox_dont_show_again">No mostrar más para estas aplicaciones</string>
 </resources>

briar-android/src/main/res/values-fr/strings.xml

@@ -19,7 +19,7 @@
   <string name="dialog_message_lost_password">Votre compte Briar est enregistré chiffré sur votre appareil et non sur le \"cloud\", par conséquent, votre mot de passe ne peut être réinitialisé. Voulez-vous supprimer votre compte et démarrer à nouveau ?\n\nAttention : vos identités, contacts et messages seront définitivement perdus.</string>
   <string name="startup_failed_notification_title">Briar n\'a pas pu démarrer</string>
   <string name="startup_failed_notification_text">Vous devrez peut-être réinstaller Briar.</string>
-  <string name="startup_failed_activity_title">Echec de démarrage de Briar.</string>
+  <string name="startup_failed_activity_title">Échec de démarrage de Briar</string>
   <string name="startup_failed_db_error">Pour une raison indéterminée, votre base de donnée Briar est corrompue et irrécupérable. Vos comptes, données et contacts sont perdus. Vous devez malheureusement réinstaller Briar et configurer un nouveau compte.</string>
   <string name="startup_failed_service_error">Briar n\'a pas pu démarrer un module nécessaire. Réinstaller Briar résout généralement ce problème. Veuillez noter que vous perdrez votre compte et toutes les données associées puisque Briar n\'utilise pas de serveurs centralisés pour enregistrer les données.</string>
   <string name="expiry_warning">Ce logiciel est arrivé à expiration.\nVeuillez installer une version plus récente.</string>
@@ -151,7 +151,6 @@
   <string name="groups_create_group_invitation_button">Envoyer invitation</string>
   <string name="groups_create_group_hint">Ajouter un nom au groupe privé</string>
   <string name="groups_invitation_sent">Invitation envoyée au groupe</string>
-  <string name="groups_compose_message">Composer message</string>
   <string name="groups_message_sent">Message envoyé</string>
   <string name="groups_member_list">Liste de participants</string>
   <string name="groups_invite_members">Inviter des participants</string>
@@ -182,6 +181,7 @@
   <string name="groups_invitations_response_declined_sent">Vous avez refusé l\'invitation du groupe de %s.</string>
   <string name="groups_invitations_response_accepted_received">%s a accepté l\'invitation du groupe.</string>
   <string name="groups_invitations_response_declined_received">%s a décliné l\'invitation du groupe.</string>
+  <string name="sharing_status_groups">Seul l\'initiateur du groupe peut inviter de nouveaux membres. Voici la liste des membres actuels.</string>
   <!--Private Groups Revealing Contacts-->
   <string name="groups_reveal_contacts">Dévoiler les contacts</string>
   <string name="groups_reveal_dialog_message">Vous pouvez choisir de dévoiler les contacts à tous les membres actuels et futurs de ce groupe.\n\nDévoiler les contacts vous assure une connexion au groupe plus rapide et plus fiable car vous pouvez communiquer avec les contacts dévoilés même si l\'initiateur du groupe est hors ligne.</string>
@@ -201,15 +201,10 @@
     <item quantity="one">%d message</item>
     <item quantity="other">%d messages</item>
   </plurals>
-  <string name="forum_compose_post">Nouveau post de forum</string>
   <string name="forum_new_entry_posted">Entrée de forum postée</string>
   <string name="forum_new_message_hint">Nouvelle entrée</string>
   <string name="forum_message_reply_hint">Nouvelle réponse</string>
   <string name="btn_reply">Répondre</string>
-  <plurals name="message_replies">
-    <item quantity="one">%1$d réponse</item>
-    <item quantity="other">%1$d réponses</item>
-  </plurals>
   <string name="forum_leave">Quitter le forum</string>
   <string name="dialog_title_leave_forum">Confirmer la sortie du forum</string>
   <string name="dialog_message_leave_forum">Êtes-vous sûr de vouloir quitter ce forum ? Les contacts avec qui vous l\'avez partagé pourraient ne plus recevoir ses mises à jour.</string>
@@ -236,6 +231,7 @@
   <string name="forum_invitation_response_accepted_received">%s a accepté l\'invitation au forum.</string>
   <string name="forum_invitation_response_declined_received">%s a décliné l\'invitation au forum.</string>
   <string name="sharing_status">Etat de partage</string>
+  <string name="sharing_status_forum">Tous les participants d\'un forum peuvent le partager avec leurs contacts. Vous partagez ce forum avec les contacts suivants. Il y a peut-être d\'autres participants que vous ne pouvez voir.</string>
   <string name="shared_with">Partagé avec %1$d (%2$d en ligne)</string>
   <plurals name="forums_shared">
     <item quantity="one">%d forum partagé par des contacts</item>
@@ -273,6 +269,7 @@
   <string name="blogs_sharing_invitations_title">Invitations au blog</string>
   <string name="blogs_sharing_joined_toast">Abonné au Blog</string>
   <string name="blogs_sharing_declined_toast">Invitation au blog refusée</string>
+  <string name="sharing_status_blog">Quiconque est abonné à un blog peut le partager avec ses contacts. Vous partagez ce blog avec les contacts suivants. Il y a peut-être d\'autres abonnés que vous ne pouvez voir.</string>
   <!--RSS Feeds-->
   <string name="blogs_rss_feeds_import">Import de flux RSS</string>
   <string name="blogs_rss_feeds_import_button">Importer</string>
@@ -282,6 +279,9 @@
   <string name="blogs_rss_feeds_manage_imported">Importé :</string>
   <string name="blogs_rss_feeds_manage_author">Auteur :</string>
   <string name="blogs_rss_feeds_manage_updated">Dernière mise à jour :</string>
+  <string name="blogs_rss_remove_feed">Supprimer le flux</string>
+  <string name="blogs_rss_remove_feed_dialog_message">Êtes-vous sûr de vouloir supprimer ce flux et tous ses messages ?\nLes postes que vous avez partagés ne seront pas supprimés des appareils des autres personnes.</string>
+  <string name="blogs_rss_remove_feed_ok">Supprimer le flux</string>
   <string name="blogs_rss_feeds_manage_delete_error">Le flux n\'a pas pu être supprimé !</string>
   <string name="blogs_rss_feeds_manage_empty_state">Vous n\'avez importé aucun flux RSS.\n\nPourquoi ne pas cliquer le plus dans le coin en haut à droite pour ajouter votre premier ?</string>
   <string name="blogs_rss_feeds_manage_error">Problème lors du chargement de vos flux. Réessayer ultérieurement.</string>
@@ -353,4 +353,9 @@
   <string name="dev_report_saved">Rapport enregistré. Il sera envoyé lors de votre prochaine connexion à Briar.</string>
   <!--Sign Out-->
   <string name="progress_title_logout">Déconnexion de Briar ...</string>
+  <!--Screen Filters & Tapjacking-->
+  <string name="screen_filter_title">Filtre d\'écran détecté</string>
+  <string name="screen_filter_body">Les applications suivantes ont l\'autorisation de s\'afficher par dessus d\'autres :\n\n%1$s \n\nBriar ne répondra pas aux touches lorsqu\'une autre application s\'affiche par dessus.
+En cas de problèmes, essayer d\'arrêter ces applications durant l\'utilisation de Briar.\n</string>
+  <string name="checkbox_dont_show_again">Ne plus m\'avertir à propos de ces applications</string>
 </resources>

briar-android/src/main/res/values-it/strings.xml

@@ -124,7 +124,6 @@
   <string name="groups_create_group_invitation_button">Invia invito</string>
   <string name="groups_create_group_hint">Inserisci un nome per il tuo gruppo privato</string>
   <string name="groups_invitation_sent">Invito a partecipare al gruppo spedito</string>
-  <string name="groups_compose_message">Scrivi un messaggio</string>
   <string name="groups_message_sent">Messaggio inviato</string>
   <string name="groups_member_list">Lista membri</string>
   <string name="groups_invite_members">Invita Membri</string>
@@ -152,10 +151,6 @@
     <item quantity="other">%d post</item>
   </plurals>
   <string name="forum_message_reply_hint">Nuova Risposta</string>
-  <plurals name="message_replies">
-    <item quantity="one">risposta di %1$d</item>
-    <item quantity="other">risposte di %1$d</item>
-  </plurals>
   <string name="forum_leave">Lascia Forum</string>
   <string name="dialog_title_leave_forum">Conferma l\'abbandono del forum</string>
   <string name="dialog_button_leave">Lascia</string>
@@ -261,4 +256,5 @@
   <string name="send_report">Invia report</string>
   <string name="close">Chiudi</string>
   <!--Sign Out-->
+  <!--Screen Filters & Tapjacking-->
 </resources>

briar-android/src/main/res/values-pt-rBR/strings.xml

@@ -151,7 +151,6 @@
   <string name="groups_create_group_invitation_button">Enviar Convite</string>
   <string name="groups_create_group_hint">Adicionar um nome para seu grupo privado</string>
   <string name="groups_invitation_sent">Convite do Grupo enviado </string>
-  <string name="groups_compose_message">Escrever Mensagem</string>
   <string name="groups_message_sent">Mensagem enviada</string>
   <string name="groups_member_list">Lista de membros</string>
   <string name="groups_invite_members">Convidar membros</string>
@@ -201,15 +200,10 @@
     <item quantity="one">%d Post</item>
     <item quantity="other">%d Posts</item>
   </plurals>
-  <string name="forum_compose_post">Nova postagem em fórum</string>
   <string name="forum_new_entry_posted">postada com sucesso</string>
   <string name="forum_new_message_hint">Novo tópico</string>
   <string name="forum_message_reply_hint">Nova resposta</string>
   <string name="btn_reply">Responder</string>
-  <plurals name="message_replies">
-    <item quantity="one">%1$d resposta</item>
-    <item quantity="other">%1$d respostas</item>
-  </plurals>
   <string name="forum_leave">Sair do fórum</string>
   <string name="dialog_title_leave_forum">Confirmar saída do fórum</string>
   <string name="dialog_message_leave_forum">Você tem certeza que deseja sair deste fórum? Seus contatos com quem você o compartilhou podem deixar de receber notificações dele.</string>
@@ -349,4 +343,5 @@
   <string name="dev_report_saved">Relatório salvo. Ele será enviado na próxima vez em que você entrar no Briar.</string>
   <!--Sign Out-->
   <string name="progress_title_logout">Saindo do Briar…</string>
+  <!--Screen Filters & Tapjacking-->
 </resources>

briar-android/src/main/res/values-sq/strings.xml

@@ -151,7 +151,6 @@
   <string name="groups_create_group_invitation_button">Dërgoje Ftesën</string>
   <string name="groups_create_group_hint">Shtoni një emër për grupin tuaj privat</string>
   <string name="groups_invitation_sent">Ftesa e grupit u dërgua</string>
-  <string name="groups_compose_message">Hartoni Mesazh</string>
   <string name="groups_message_sent">Mesazhi u dërgua</string>
   <string name="groups_member_list">Listë Anëtarësh</string>
   <string name="groups_invite_members">Ftoni Anëtarë</string>
@@ -182,6 +181,7 @@
   <string name="groups_invitations_response_declined_sent">Hodhët poshtë ftesën e grupit nga %s.</string>
   <string name="groups_invitations_response_accepted_received">%s e pranoi ftesën e grupit.</string>
   <string name="groups_invitations_response_declined_received">%s e hodhi poshtë ftesën e grupit.</string>
+  <string name="sharing_status_groups">Vetëm krijuesi mund të ftojë anëtarë të rinj në grup. Më poshtë gjenden tërë anëtarët e tanishëm të grupit.</string>
   <!--Private Groups Revealing Contacts-->
   <string name="groups_reveal_contacts">Shfaqua Kontaktet</string>
   <string name="groups_reveal_dialog_message">Mund të zgjidhni t’ua shfaqni ose jo kontaktet krejt anëtarëve të tanishëm dhe të ardhshëm të këtij grupi.\n\nShfaqja e kontakteve e bën lidhjen tuaj me grupin më të shpejtë dhe më të besueshme, ngaqë mund të komunikoni me kontaktet e shfaqura edhe kur krijuesi i grupit s’është në linjë.</string>
@@ -201,15 +201,10 @@
     <item quantity="one">%d postim</item>
     <item quantity="other">%d postime</item>
   </plurals>
-  <string name="forum_compose_post">Postim i Ri Forumi</string>
   <string name="forum_new_entry_posted">U postua zë forumi</string>
   <string name="forum_new_message_hint">Zë i Ri</string>
   <string name="forum_message_reply_hint">Përgjigje e Re</string>
   <string name="btn_reply">Përgjigju</string>
-  <plurals name="message_replies">
-    <item quantity="one">%1$d përgjigje</item>
-    <item quantity="other">%1$d përgjigje</item>
-  </plurals>
   <string name="forum_leave">Braktiseni Forumin</string>
   <string name="dialog_title_leave_forum">Ripohoni Braktisjen e Forumit</string>
   <string name="dialog_message_leave_forum">Jeni i sigurt se doni ta braktisni këtë forum? Kontaktet me të cilët e keni ndarë këtë forum mundet të mbeten jashtë marrjes së përditësimeve nga ky forum.</string>
@@ -236,6 +231,7 @@
   <string name="forum_invitation_response_accepted_received">%s pranoi ftesën e forumit.</string>
   <string name="forum_invitation_response_declined_received">%s e hodhi poshtë ftesën e forumit.</string>
   <string name="sharing_status">Gjendje Ndarjeje Me të Tjerë</string>
+  <string name="sharing_status_forum">Cilido anëtar i grupit mund ta ndajë me të tjerët. Këtë forum po e ndani me kontaktet vijuese. Mund të ketë edhe anëtarë të tjerët, të cilët s’mund t’i shihni.</string>
   <string name="shared_with">E ndarë me %1$d (%2$d në linjë)</string>
   <plurals name="forums_shared">
     <item quantity="one">%d forum ndarë nga kontakte</item>
@@ -273,6 +269,7 @@
   <string name="blogs_sharing_invitations_title">Ftesa Blogu</string>
   <string name="blogs_sharing_joined_toast">U pajtuat te Blogu</string>
   <string name="blogs_sharing_declined_toast">Ftesa e Blogut u Hodh Poshtë</string>
+  <string name="sharing_status_blog">Cilido që pajtohet te një blog mund ta ndajë atë me kontaktet e veta. Këtë blog po e ndani me kontaktet vijuese. Mund të ketë edhe pajtimtarë të tjerë, të cilët s’mund t’i shihni.</string>
   <!--RSS Feeds-->
   <string name="blogs_rss_feeds_import">Importoni Prurje RSS</string>
   <string name="blogs_rss_feeds_import_button">Importo</string>
@@ -282,6 +279,9 @@
   <string name="blogs_rss_feeds_manage_imported">Të importuara:</string>
   <string name="blogs_rss_feeds_manage_author">Autor:</string>
   <string name="blogs_rss_feeds_manage_updated">Përditësuar Së Fundi:</string>
+  <string name="blogs_rss_remove_feed">Hiqe Prurjen</string>
+  <string name="blogs_rss_remove_feed_dialog_message">Jeni i sigurt se doni të hiqet kjo prurje dhe krejt postimet e saj?\nÇfarëdo postimi që keni ndarë me të tjerët, nuk do të hiqet nga pajisjet e personave të tjerë.</string>
+  <string name="blogs_rss_remove_feed_ok">Hiqe Prurjen</string>
   <string name="blogs_rss_feeds_manage_delete_error">S’u fshi dot prurja!</string>
   <string name="blogs_rss_feeds_manage_empty_state">S’keni importuar ende ndonjë prurje RSS.\n\nPse nuk klikoni mbi shenjën plus në cepin e sipërm djathtas që të shtoni të parën tuaj?</string>
   <string name="blogs_rss_feeds_manage_error">Pati një problem me ngarkimin e prurjeve tuaja. Ju lutemi, riprovoni më vonë.</string>
@@ -353,4 +353,9 @@
   <string name="dev_report_saved">Njoftimi u ruajt. Do të dërgohet herën tjetër që do të hyni në Briar.</string>
   <!--Sign Out-->
   <string name="progress_title_logout">Po dilet nga Briar-i…</string>
+  <!--Screen Filters & Tapjacking-->
+  <string name="screen_filter_title">U pikas filtër ekrani</string>
+  <string name="screen_filter_body">Aplikacionet vijuese kanë leje të vizatojnë përmbi aplikacione të tjera:\n\n%1$s \n\nBriar-i nuk do të reagojë ndaj prekjesh,  kur mbi të po vizaton një tjetër aplikacion.
+Nëse hasni probleme, provoni t’i mbyllni këto aplikacione, kur përdorni Briar-in.\n</string>
+  <string name="checkbox_dont_show_again">Mos më sinjalizo më për këto aplikacione</string>
 </resources>

briar-android/src/main/res/values/color.xml

@@ -33,11 +33,11 @@
 
 	<!-- this is needed as preference_category_material layout uses this color as the text color -->
 	<color name="preference_fallback_accent_color">@color/briar_accent</color>
+
+	<color name="thread_indicator">#9e9e9e</color>
 	<color name="divider">#c1c1c1</color>
-	<color name="default_separator_inverted">#ffffff</color>
 	<color name="menu_background">#FFFFFF</color>
 
 	<color name="spinner_border">#61000000</color> <!-- 38% Black -->
-	<color name="forum_discussion_nested_line">#cfd2d4</color>
 	<color name="forum_cell_highlight">#ffffff</color>
 </resources>

briar-android/src/main/res/values/strings.xml

@@ -162,7 +162,6 @@
 	<string name="groups_create_group_invitation_button">Send Invitation</string>
 	<string name="groups_create_group_hint">Add a name for your private group</string>
 	<string name="groups_invitation_sent">Group invitation has been sent</string>
-	<string name="groups_compose_message">Compose Message</string>
 	<string name="groups_message_sent">Message sent</string>
 	<string name="groups_member_list">Member List</string>
 	<string name="groups_invite_members">Invite Members</string>
@@ -216,15 +215,10 @@
 		<item quantity="one">%d post</item>
 		<item quantity="other">%d posts</item>
 	</plurals>
-	<string name="forum_compose_post">New Forum Post</string>
 	<string name="forum_new_entry_posted">Forum entry posted</string>
 	<string name="forum_new_message_hint">New Entry</string>
 	<string name="forum_message_reply_hint">New Reply</string>
 	<string name="btn_reply">Reply</string>
-	<plurals name="message_replies">
-		<item quantity="one">%1$d reply</item>
-		<item quantity="other">%1$d replies</item>
-	</plurals>
 	<string name="forum_leave">Leave Forum</string>
 	<string name="dialog_title_leave_forum">Confirm Leaving Forum</string>
 	<string name="dialog_message_leave_forum">Are you sure that you want to leave this forum? Contacts you have shared this forum with might get cut off from receiving updates for this forum.</string>

briar-android/src/main/res/values/styles.xml

@@ -102,7 +102,7 @@
 
 	<style name="DiscussionLevelIndicator">
 		<item name="android:layout_marginLeft">4dp</item>
-		<item name="android:background">@color/divider</item>
+		<item name="android:background">@color/thread_indicator</item>
 	</style>
 
 	<style name="BriarTabLayout" parent="Widget.Design.TabLayout">

briar-android/src/main/res/values/themes.xml

@@ -5,14 +5,8 @@
 		<item name="colorPrimary">@color/briar_primary</item>
 		<item name="colorPrimaryDark">@color/briar_primary_dark</item>
 		<item name="colorAccent">@color/briar_accent</item>
-		<item name="android:windowBackground">@color/window_background</item>
-		<item name="android:textColorPrimary">@color/briar_text_primary</item>
-		<item name="android:textColorPrimaryInverse">@color/briar_text_primary_inverse</item>
-		<item name="android:textColorSecondary">@color/briar_text_secondary</item>
-		<item name="android:textColorSecondaryInverse">@color/briar_text_secondary_inverse</item>
-		<item name="android:textColorTertiary">@color/briar_text_tertiary</item>
-		<item name="android:textColorTertiaryInverse">@color/briar_text_tertiary_inverse</item>
 		<item name="android:textColorLink">@color/briar_text_link</item>
+		<item name="android:windowBackground">@color/window_background</item>
 		<item name="android:windowAnimationStyle">@style/ActivityAnimation</item>
 		<item name="android:filterTouchesWhenObscured">true</item>
 
@@ -40,12 +34,6 @@
 		<item name="colorAccent">@color/briar_accent</item>
 		<item name="buttonBarPositiveButtonStyle">@style/BriarButtonFlat.Positive</item>
 		<item name="buttonBarNegativeButtonStyle">@style/BriarButtonFlat.Negative</item>
-		<item name="android:textColorPrimary">@color/briar_text_primary</item>
-		<item name="android:textColorPrimaryInverse">@color/briar_text_primary_inverse</item>
-		<item name="android:textColorSecondary">@color/briar_text_secondary</item>
-		<item name="android:textColorSecondaryInverse">@color/briar_text_secondary_inverse</item>
-		<item name="android:textColorTertiary">@color/briar_text_tertiary</item>
-		<item name="android:textColorTertiaryInverse">@color/briar_text_tertiary_inverse</item>
 		<item name="android:textColorLink">@color/briar_text_link</item>
 		<item name="android:windowAnimationStyle">@style/DialogAnimation</item>
 		<item name="android:filterTouchesWhenObscured">true</item>

briar-android/src/test/java/org/briarproject/briar/android/forum/ForumActivityTest.java

@@ -13,6 +13,8 @@ import org.briarproject.briar.BuildConfig;
 import org.briarproject.briar.android.TestBriarApplication;
 import org.briarproject.briar.android.controller.handler.UiResultExceptionHandler;
 import org.briarproject.briar.android.threaded.ThreadItemAdapter;
+import org.briarproject.briar.android.threaded.ThreadItemList;
+import org.briarproject.briar.android.threaded.ThreadItemListImpl;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -23,10 +25,7 @@ import org.robolectric.Robolectric;
 import org.robolectric.RobolectricGradleTestRunner;
 import org.robolectric.annotation.Config;
 
-import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collection;
-import java.util.List;
 
 import static junit.framework.Assert.assertEquals;
 import static junit.framework.Assert.assertTrue;
@@ -81,7 +80,7 @@ public class ForumActivityTest {
 
 	private TestForumActivity forumActivity;
 	@Captor
-	private ArgumentCaptor<UiResultExceptionHandler<Collection<ForumItem>, DbException>>
+	private ArgumentCaptor<UiResultExceptionHandler<ThreadItemList<ForumItem>, DbException>>
 			rc;
 
 	@Before
@@ -93,7 +92,7 @@ public class ForumActivityTest {
 				.withIntent(intent).create().resume().get();
 	}
 
-	private List<ForumItem> getDummyData() {
+	private ThreadItemList<ForumItem> getDummyData() {
 		ForumItem[] forumItems = new ForumItem[6];
 		for (int i = 0; i < forumItems.length; i++) {
 			AuthorId authorId = new AuthorId(TestUtils.getRandomId());
@@ -103,13 +102,15 @@ public class ForumActivityTest {
 					AUTHORS[i], System.currentTimeMillis(), author, UNKNOWN);
 			forumItems[i].setLevel(LEVELS[i]);
 		}
-		return new ArrayList<>(Arrays.asList(forumItems));
+		ThreadItemList<ForumItem> list = new ThreadItemListImpl<>();
+		list.addAll(Arrays.asList(forumItems));
+		return list;
 	}
 
 	@Test
 	public void testNestedEntries() {
 		ForumController mc = forumActivity.getController();
-		List<ForumItem> dummyData = getDummyData();
+		ThreadItemList<ForumItem> dummyData = getDummyData();
 		verify(mc, times(1)).loadItems(rc.capture());
 		rc.getValue().onResult(dummyData);
 		ThreadItemAdapter<ForumItem> adapter = forumActivity.getAdapter();

briar-api/src/main/java/org/briarproject/briar/api/blog/BlogManager.java

@@ -34,7 +34,7 @@ public interface BlogManager {
 	/**
 	 * Returns true if a blog can be removed.
 	 */
-	boolean canBeRemoved(GroupId g) throws DbException;
+	boolean canBeRemoved(Blog b) throws DbException;
 
 	/**
 	 * Removes and deletes a blog.

briar-api/src/main/java/org/briarproject/briar/api/client/MessageTracker.java

@@ -7,6 +7,8 @@ import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.sync.Message;
 import org.briarproject.bramble.api.sync.MessageId;
 
+import javax.annotation.Nullable;
+
 @NotNullByDefault
 public interface MessageTracker {
 
@@ -38,6 +40,19 @@ public interface MessageTracker {
 	void trackMessage(Transaction txn, GroupId g, long timestamp, boolean read)
 			throws DbException;
 
+	/**
+	 *  Loads the stored message id for the respective group id or returns null
+	 *  if none is available.
+	 */
+	@Nullable
+	MessageId loadStoredMessageId(GroupId g) throws DbException;
+
+	/**
+	 * Stores the message id for the respective group id. Exactly one message id
+	 * can be stored for any group id at any time, older values are overwritten.
+	 */
+	void storeMessageId(GroupId g, MessageId m) throws DbException;
+
 	/**
 	 * Marks a message as read or unread and updates the group count.
 	 */

briar-core/src/main/java/org/briarproject/briar/blog/BlogManagerImpl.java

@@ -3,7 +3,6 @@ package org.briarproject.briar.blog;
 import org.briarproject.bramble.api.FormatException;
 import org.briarproject.bramble.api.client.ClientHelper;
 import org.briarproject.bramble.api.contact.Contact;
-import org.briarproject.bramble.api.contact.ContactManager;
 import org.briarproject.bramble.api.data.BdfDictionary;
 import org.briarproject.bramble.api.data.BdfEntry;
 import org.briarproject.bramble.api.data.BdfList;
@@ -76,7 +75,6 @@ class BlogManagerImpl extends BdfIncomingMessageHook implements BlogManager,
 		AddContactHook, RemoveContactHook, Client {
 
 	private final IdentityManager identityManager;
-	private final ContactManager contactManager;
 	private final BlogFactory blogFactory;
 	private final BlogPostFactory blogPostFactory;
 	private final List<RemoveBlogHook> removeHooks;
@@ -84,12 +82,10 @@ class BlogManagerImpl extends BdfIncomingMessageHook implements BlogManager,
 	@Inject
 	BlogManagerImpl(DatabaseComponent db, IdentityManager identityManager,
 			ClientHelper clientHelper, MetadataParser metadataParser,
-			ContactManager contactManager, BlogFactory blogFactory,
+			BlogFactory blogFactory, BlogPostFactory blogPostFactory) {
-			BlogPostFactory blogPostFactory) {
 		super(db, clientHelper, metadataParser);
 
 		this.identityManager = identityManager;
-		this.contactManager = contactManager;
 		this.blogFactory = blogFactory;
 		this.blogPostFactory = blogPostFactory;
 		removeHooks = new CopyOnWriteArrayList<RemoveBlogHook>();
@@ -120,7 +116,7 @@ class BlogManagerImpl extends BdfIncomingMessageHook implements BlogManager,
 	@Override
 	public void removingContact(Transaction txn, Contact c) throws DbException {
 		Blog b = blogFactory.createBlog(c.getAuthor());
-		removeBlog(txn, b, true);
+		removeBlog(txn, b);
 	}
 
 	@Override
@@ -191,10 +187,10 @@ class BlogManagerImpl extends BdfIncomingMessageHook implements BlogManager,
 	}
 
 	@Override
-	public boolean canBeRemoved(GroupId g) throws DbException {
+	public boolean canBeRemoved(Blog b) throws DbException {
 		Transaction txn = db.startTransaction(true);
 		try {
-			boolean canBeRemoved = canBeRemoved(txn, g);
+			boolean canBeRemoved = canBeRemoved(txn, b);
 			db.commitTransaction(txn);
 			return canBeRemoved;
 		} finally {
@@ -202,23 +198,18 @@ class BlogManagerImpl extends BdfIncomingMessageHook implements BlogManager,
 		}
 	}
 
-	private boolean canBeRemoved(Transaction txn, GroupId g)
+	private boolean canBeRemoved(Transaction txn, Blog b)
 			throws DbException {
-		boolean canBeRemoved;
-		Blog b = getBlog(txn, g);
 		AuthorId authorId = b.getAuthor().getId();
 		LocalAuthor localAuthor = identityManager.getLocalAuthor(txn);
-		if (localAuthor.getId().equals(authorId)) return false;
+		return !localAuthor.getId().equals(authorId);
-		canBeRemoved = !contactManager
-				.contactExists(txn, authorId, localAuthor.getId());
-		return canBeRemoved;
 	}
 
 	@Override
 	public void removeBlog(Blog b) throws DbException {
 		Transaction txn = db.startTransaction(false);
 		try {
-			removeBlog(txn, b, false);
+			removeBlog(txn, b);
 			db.commitTransaction(txn);
 		} finally {
 			db.endTransaction(txn);
@@ -227,12 +218,7 @@ class BlogManagerImpl extends BdfIncomingMessageHook implements BlogManager,
 
 	@Override
 	public void removeBlog(Transaction txn, Blog b) throws DbException {
-		removeBlog(txn, b, false);
+		if (!canBeRemoved(txn, b))
-	}
-
-	private void removeBlog(Transaction txn, Blog b, boolean forced)
-			throws DbException {
-		if (!forced && !canBeRemoved(txn, b.getId()))
 			throw new IllegalArgumentException();
 		for (RemoveBlogHook hook : removeHooks)
 			hook.removingBlog(txn, b);

briar-core/src/main/java/org/briarproject/briar/client/MessageTrackerConstants.java

@@ -2,6 +2,7 @@ package org.briarproject.briar.client;
 
 public interface MessageTrackerConstants {
 
+	String GROUP_KEY_STORED_MESSAGE_ID = "storedMessageId";
 	String GROUP_KEY_MSG_COUNT = "messageCount";
 	String GROUP_KEY_UNREAD_COUNT = "unreadCount";
 	String GROUP_KEY_LATEST_MSG = "latestMessageTime";

briar-core/src/main/java/org/briarproject/briar/client/MessageTrackerImpl.java

@@ -13,11 +13,13 @@ import org.briarproject.bramble.api.sync.Message;
 import org.briarproject.bramble.api.sync.MessageId;
 import org.briarproject.briar.api.client.MessageTracker;
 
+import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;
 import javax.inject.Inject;
 
 import static org.briarproject.briar.client.MessageTrackerConstants.GROUP_KEY_LATEST_MSG;
 import static org.briarproject.briar.client.MessageTrackerConstants.GROUP_KEY_MSG_COUNT;
+import static org.briarproject.briar.client.MessageTrackerConstants.GROUP_KEY_STORED_MESSAGE_ID;
 import static org.briarproject.briar.client.MessageTrackerConstants.GROUP_KEY_UNREAD_COUNT;
 import static org.briarproject.briar.client.MessageTrackerConstants.MSG_KEY_READ;
 
@@ -57,6 +59,30 @@ class MessageTrackerImpl implements MessageTracker {
 				latestMsgTime));
 	}
 
+	@Nullable
+	@Override
+	public MessageId loadStoredMessageId(GroupId g) throws DbException {
+		try {
+			BdfDictionary d = clientHelper.getGroupMetadataAsDictionary(g);
+			byte[] msgBytes = d.getOptionalRaw(GROUP_KEY_STORED_MESSAGE_ID);
+			return msgBytes != null ? new MessageId(msgBytes) : null;
+		} catch (FormatException e) {
+			throw new DbException(e);
+		}
+	}
+
+	@Override
+	public void storeMessageId(GroupId g, MessageId m) throws DbException {
+		BdfDictionary d = BdfDictionary.of(
+				new BdfEntry(GROUP_KEY_STORED_MESSAGE_ID, m)
+		);
+		try {
+			clientHelper.mergeGroupMetadata(g, d);
+		} catch (FormatException e) {
+			throw new DbException(e);
+		}
+	}
+
 	@Override
 	public GroupCount getGroupCount(GroupId g) throws DbException {
 		GroupCount count;

briar-core/src/main/java/org/briarproject/briar/feed/FeedManagerImpl.java

@@ -467,7 +467,11 @@ class FeedManagerImpl implements FeedManager, Client, EventListener,
 
 		// get other information for post
 		GroupId groupId = feed.getBlogId();
-		long time = clock.currentTimeMillis();
+		long time, now = clock.currentTimeMillis();
+		Date date = entry.getUpdatedDate();
+		if (date == null) date = entry.getPublishedDate();
+		if (date == null) time = now;
+		else time = Math.max(0, Math.min(date.getTime(), now));
 		String body = getPostBody(b.toString());
 		try {
 			// create and store post

briar-core/src/main/java/org/briarproject/briar/sharing/BlogSharingManagerImpl.java

@@ -1,5 +1,6 @@
 package org.briarproject.briar.sharing;
 
+import org.briarproject.bramble.api.FormatException;
 import org.briarproject.bramble.api.client.ClientHelper;
 import org.briarproject.bramble.api.client.ContactGroupFactory;
 import org.briarproject.bramble.api.contact.Contact;
@@ -11,7 +12,6 @@ import org.briarproject.bramble.api.identity.IdentityManager;
 import org.briarproject.bramble.api.identity.LocalAuthor;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.ClientId;
-import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.briar.api.blog.Blog;
 import org.briarproject.briar.api.blog.BlogInvitationResponse;
 import org.briarproject.briar.api.blog.BlogManager;
@@ -52,18 +52,17 @@ class BlogSharingManagerImpl extends SharingManagerImpl<Blog>
 	}
 
 	@Override
-	protected boolean canBeShared(Transaction txn, GroupId shareableId,
+	public void addingContact(Transaction txn, Contact c) throws DbException {
-			Contact c) throws DbException {
+		super.addingContact(txn, c);
-		// check if shareableId belongs to our personal blog
+		LocalAuthor localAuthor = identityManager.getLocalAuthor(txn);
-		LocalAuthor author = identityManager.getLocalAuthor(txn);
+		Blog ourBlog = blogManager.getPersonalBlog(localAuthor);
-		Blog b = blogManager.getPersonalBlog(author);
+		Blog theirBlog = blogManager.getPersonalBlog(c.getAuthor());
-		if (b.getId().equals(shareableId)) return false;
+		try {
-
+			initializeSharedSession(txn, c, ourBlog);
-		// check if shareableId belongs to c's personal blog
+			initializeSharedSession(txn, c, theirBlog);
-		b = blogManager.getPersonalBlog(c.getAuthor());
+		} catch (FormatException e) {
-		if (b.getId().equals(shareableId)) return false;
+			throw new DbException(e);
-
+		}
-		return super.canBeShared(txn, shareableId, c);
 	}
 
 	@Override

briar-core/src/main/java/org/briarproject/briar/sharing/SharingManagerImpl.java

@@ -48,6 +48,7 @@ import static org.briarproject.briar.sharing.MessageType.DECLINE;
 import static org.briarproject.briar.sharing.MessageType.INVITE;
 import static org.briarproject.briar.sharing.MessageType.LEAVE;
 import static org.briarproject.briar.sharing.SharingConstants.GROUP_KEY_CONTACT_ID;
+import static org.briarproject.briar.sharing.State.SHARING;
 
 @NotNullByDefault
 abstract class SharingManagerImpl<S extends Shareable>
@@ -138,6 +139,16 @@ abstract class SharingManagerImpl<S extends Shareable>
 		return false;
 	}
 
+	protected void initializeSharedSession(Transaction txn, Contact c,
+			S shareable) throws DbException, FormatException {
+		GroupId contactGroupId = getContactGroup(c).getId();
+		Session session =
+				new Session(SHARING, contactGroupId, shareable.getId(), null,
+						null, 0, 0);
+		MessageId storageId = createStorageId(txn, contactGroupId);
+		storeSession(txn, storageId, session);
+	}
+
 	private SessionId getSessionId(GroupId shareableId) {
 		return new SessionId(shareableId.getBytes());
 	}
@@ -414,7 +425,7 @@ abstract class SharingManagerImpl<S extends Shareable>
 		}
 	}
 
-	protected boolean canBeShared(Transaction txn, GroupId g, Contact c)
+	private boolean canBeShared(Transaction txn, GroupId g, Contact c)
 			throws DbException {
 		GroupId contactGroupId = getContactGroup(c).getId();
 		SessionId sessionId = getSessionId(g);

briar-core/src/test/java/org/briarproject/briar/blog/BlogManagerImplTest.java

@@ -4,7 +4,6 @@ import org.briarproject.bramble.api.FormatException;
 import org.briarproject.bramble.api.client.ClientHelper;
 import org.briarproject.bramble.api.contact.Contact;
 import org.briarproject.bramble.api.contact.ContactId;
-import org.briarproject.bramble.api.contact.ContactManager;
 import org.briarproject.bramble.api.data.BdfDictionary;
 import org.briarproject.bramble.api.data.BdfEntry;
 import org.briarproject.bramble.api.data.BdfList;
@@ -77,8 +76,6 @@ public class BlogManagerImplTest extends BriarTestCase {
 	private final IdentityManager identityManager =
 			context.mock(IdentityManager.class);
 	private final ClientHelper clientHelper = context.mock(ClientHelper.class);
-	private final ContactManager contactManager =
-			context.mock(ContactManager.class);
 	private final BlogFactory blogFactory = context.mock(BlogFactory.class);
 	private final BlogPostFactory blogPostFactory =
 			context.mock(BlogPostFactory.class);
@@ -94,7 +91,7 @@ public class BlogManagerImplTest extends BriarTestCase {
 	public BlogManagerImplTest() {
 		MetadataParser metadataParser = context.mock(MetadataParser.class);
 		blogManager = new BlogManagerImpl(db, identityManager, clientHelper,
-				metadataParser, contactManager, blogFactory, blogPostFactory);
+				metadataParser, blogFactory, blogPostFactory);
 
 		localAuthor1 = createLocalAuthor();
 		localAuthor2 = createLocalAuthor();
@@ -160,6 +157,8 @@ public class BlogManagerImplTest extends BriarTestCase {
 		context.checking(new Expectations() {{
 			oneOf(blogFactory).createBlog(blog2.getAuthor());
 			will(returnValue(blog2));
+			oneOf(identityManager).getLocalAuthor(txn);
+			will(returnValue(blog1.getAuthor()));
 			oneOf(db).removeGroup(txn, blog2.getGroup());
 		}});
 
@@ -244,13 +243,11 @@ public class BlogManagerImplTest extends BriarTestCase {
 	public void testRemoveBlog() throws Exception {
 		final Transaction txn = new Transaction(null, false);
 
-		checkGetBlogExpectations(txn, false, blog1);
 		context.checking(new Expectations() {{
+			oneOf(db).startTransaction(false);
+			will(returnValue(txn));
 			oneOf(identityManager).getLocalAuthor(txn);
 			will(returnValue(blog2.getAuthor()));
-			oneOf(contactManager).contactExists(txn, localAuthor1.getId(),
-					localAuthor2.getId());
-			will(returnValue(false));
 			oneOf(db).removeGroup(txn, blog1.getGroup());
 			oneOf(db).commitTransaction(txn);
 			oneOf(db).endTransaction(txn);
@@ -800,57 +797,29 @@ public class BlogManagerImplTest extends BriarTestCase {
 	public void testBlogCanBeRemoved() throws Exception {
 		// check that own personal blogs can not be removed
 		final Transaction txn = new Transaction(null, true);
-		checkGetBlogExpectations(txn, true, blog1);
 		context.checking(new Expectations() {{
+			oneOf(db).startTransaction(true);
+			will(returnValue(txn));
 			oneOf(identityManager).getLocalAuthor(txn);
 			will(returnValue(blog1.getAuthor()));
 			oneOf(db).commitTransaction(txn);
 			oneOf(db).endTransaction(txn);
 		}});
-		assertFalse(blogManager.canBeRemoved(blog1.getId()));
+		assertFalse(blogManager.canBeRemoved(blog1));
 		context.assertIsSatisfied();
 
-		// check that blogs of contacts can not be removed
+		// check that blogs of contacts can be removed
 		final Transaction txn2 = new Transaction(null, true);
-		checkGetBlogExpectations(txn2, true, blog1);
 		context.checking(new Expectations() {{
+			oneOf(db).startTransaction(true);
+			will(returnValue(txn2));
 			oneOf(identityManager).getLocalAuthor(txn2);
 			will(returnValue(blog2.getAuthor()));
-			oneOf(contactManager).contactExists(txn2, blog1.getAuthor().getId(),
-					blog2.getAuthor().getId());
-			will(returnValue(true));
 			oneOf(db).commitTransaction(txn2);
 			oneOf(db).endTransaction(txn2);
 		}});
-		assertFalse(blogManager.canBeRemoved(blog1.getId()));
+		assertTrue(blogManager.canBeRemoved(blog1));
 		context.assertIsSatisfied();
-
-		// check that blogs can be removed if they don't belong to a contact
-		final Transaction txn3 = new Transaction(null, true);
-		checkGetBlogExpectations(txn3, true, blog1);
-		context.checking(new Expectations() {{
-			oneOf(identityManager).getLocalAuthor(txn3);
-			will(returnValue(blog2.getAuthor()));
-			oneOf(contactManager).contactExists(txn3, blog1.getAuthor().getId(),
-					blog2.getAuthor().getId());
-			will(returnValue(false));
-			oneOf(db).commitTransaction(txn3);
-			oneOf(db).endTransaction(txn3);
-		}});
-		assertTrue(blogManager.canBeRemoved(blog1.getId()));
-		context.assertIsSatisfied();
-	}
-
-	private void checkGetBlogExpectations(final Transaction txn,
-			final boolean readOnly, final Blog blog) throws Exception {
-		context.checking(new Expectations() {{
-			oneOf(db).startTransaction(readOnly);
-			will(returnValue(txn));
-			oneOf(db).getGroup(txn, blog.getId());
-			will(returnValue(blog.getGroup()));
-			oneOf(blogFactory).parseBlog(blog.getGroup());
-			will(returnValue(blog));
-		}});
 	}
 
 	private LocalAuthor createLocalAuthor() {
@@ -874,4 +843,4 @@ public class BlogManagerImplTest extends BriarTestCase {
 		);
 	}
 
-}
+}

briar-core/src/test/java/org/briarproject/briar/blog/BlogManagerIntegrationTest.java

@@ -21,7 +21,6 @@ import org.junit.rules.ExpectedException;
 import java.util.Collection;
 import java.util.Iterator;
 
-import static junit.framework.Assert.assertFalse;
 import static junit.framework.Assert.assertNotNull;
 import static org.briarproject.bramble.api.identity.AuthorConstants.MAX_AUTHOR_NAME_LENGTH;
 import static org.briarproject.bramble.api.identity.AuthorConstants.MAX_PUBLIC_KEY_LENGTH;
@@ -185,19 +184,19 @@ public class BlogManagerIntegrationTest
 	}
 
 	@Test
-	public void testCanNotRemoveContactsPersonalBlog() throws Exception {
+	public void testCanRemoveContactsPersonalBlog() throws Exception {
-		assertFalse(blogManager0.canBeRemoved(blog1.getId()));
+		assertTrue(blogManager0.canBeRemoved(blog1));
-		assertFalse(blogManager1.canBeRemoved(blog0.getId()));
+		assertTrue(blogManager1.canBeRemoved(blog0));
 
-		// the following two calls should throw a DbException now
+		assertEquals(4, blogManager0.getBlogs().size());
-		thrown.expect(IllegalArgumentException.class);
+		assertEquals(2, blogManager1.getBlogs().size());
 
 		blogManager0.removeBlog(blog1);
 		blogManager1.removeBlog(blog0);
 
-		// blogs have not been removed
+		// blogs have been removed
-		assertEquals(2, blogManager0.getBlogs().size());
+		assertEquals(3, blogManager0.getBlogs().size());
-		assertEquals(2, blogManager1.getBlogs().size());
+		assertEquals(1, blogManager1.getBlogs().size());
 	}
 
 	@Test

briar-core/src/test/java/org/briarproject/briar/client/MessageTrackerTest.java

@@ -0,0 +1,50 @@
+package org.briarproject.briar.client;
+
+import org.briarproject.bramble.api.client.ClientHelper;
+import org.briarproject.bramble.api.data.BdfDictionary;
+import org.briarproject.bramble.api.data.BdfEntry;
+import org.briarproject.bramble.api.db.DatabaseComponent;
+import org.briarproject.bramble.api.sync.GroupId;
+import org.briarproject.bramble.api.sync.MessageId;
+import org.briarproject.bramble.test.BrambleMockTestCase;
+import org.briarproject.bramble.test.TestUtils;
+import org.briarproject.briar.api.client.MessageTracker;
+import org.jmock.Expectations;
+import org.junit.Assert;
+import org.junit.Test;
+
+import static org.briarproject.briar.client.MessageTrackerConstants.GROUP_KEY_STORED_MESSAGE_ID;
+
+public class MessageTrackerTest extends BrambleMockTestCase {
+
+	protected final GroupId groupId = new GroupId(TestUtils.getRandomId());
+	protected final ClientHelper clientHelper =
+			context.mock(ClientHelper.class);
+	private final DatabaseComponent db = context.mock(DatabaseComponent.class);
+	private final MessageId messageId = new MessageId(TestUtils.getRandomId());
+	private final MessageTracker messageTracker =
+			new MessageTrackerImpl(db, clientHelper);
+	private final BdfDictionary dictionary = BdfDictionary.of(
+			new BdfEntry(GROUP_KEY_STORED_MESSAGE_ID, messageId)
+	);
+
+	@Test
+	public void testMessageStore() throws Exception {
+		context.checking(new Expectations() {{
+			oneOf(clientHelper).mergeGroupMetadata(groupId, dictionary);
+		}});
+		messageTracker.storeMessageId(groupId, messageId);
+	}
+
+	@Test
+	public void testMessageLoad() throws Exception {
+		context.checking(new Expectations() {{
+			oneOf(clientHelper).getGroupMetadataAsDictionary(groupId);
+			will(returnValue(dictionary));
+		}});
+		MessageId loadedId = messageTracker.loadStoredMessageId(groupId);
+		Assert.assertNotNull(loadedId);
+		Assert.assertTrue(messageId.equals(loadedId));
+	}
+
+}

briar-core/src/test/java/org/briarproject/briar/sharing/BlogSharingIntegrationTest.java

@@ -41,7 +41,7 @@ import static org.junit.Assert.fail;
 public class BlogSharingIntegrationTest
 		extends BriarIntegrationTest<BriarIntegrationTestComponent> {
 
-	private BlogManager blogManager1;
+	private BlogManager blogManager0, blogManager1;
 	private Blog blog0, blog1, blog2;
 	private SharerListener listener0;
 	private InviteeListener listener1;
@@ -60,7 +60,7 @@ public class BlogSharingIntegrationTest
 	public void setUp() throws Exception {
 		super.setUp();
 
-		BlogManager blogManager0 = c0.getBlogManager();
+		blogManager0 = c0.getBlogManager();
 		blogManager1 = c1.getBlogManager();
 		blogSharingManager0 = c0.getBlogSharingManager();
 		blogSharingManager1 = c1.getBlogSharingManager();
@@ -370,7 +370,7 @@ public class BlogSharingIntegrationTest
 		assertEquals(contact0From1, sharedBy.iterator().next());
 
 		// shared blog can be removed
-		assertTrue(blogManager1.canBeRemoved(blog2.getId()));
+		assertTrue(blogManager1.canBeRemoved(blog2));
 
 		// invitee removes blog again
 		blogManager1.removeBlog(blog2);
@@ -386,44 +386,33 @@ public class BlogSharingIntegrationTest
 	}
 
 	@Test
-	public void testSharedBlogBecomesPermanent() throws Exception {
+	public void testRemovePreSharedBlog() throws Exception {
 		// let invitee accept all requests
 		listenToEvents(true);
 
-		// invitee only sees two blogs
+		// 0 and 1 are sharing blog 1 with each other
-		assertEquals(2, blogManager1.getBlogs().size());
+		assertTrue(blogSharingManager0.getSharedWith(blog1.getId())
+				.contains(contact1From0));
+		assertTrue(blogSharingManager1.getSharedWith(blog1.getId())
+				.contains(contact0From1));
 
-		// sharer sends invitation for 2's blog to 1
+		// 0 removes blog 1
-		blogSharingManager0
+		assertTrue(blogManager0.getBlogs().contains(blog1));
-				.sendInvitation(blog2.getId(), contactId1From0, "Hi!",
+		blogManager0.removeBlog(blog1);
-						clock.currentTimeMillis());
+		assertFalse(blogManager0.getBlogs().contains(blog1));
 
-		// sync first request message
+		// sync leave message to 0
 		sync0To1(1, true);
-		eventWaiter.await(TIMEOUT, 1);
-		assertTrue(listener1.requestReceived);
 
-		// make sure blog2 is shared by 0
+		// 0 and 1 are no longer sharing blog 1 with each other
-		Collection<Contact> contacts =
+		assertFalse(blogSharingManager0.getSharedWith(blog1.getId())
-				blogSharingManager1.getSharedWith(blog2.getId());
+				.contains(contact1From0));
-		assertEquals(1, contacts.size());
+		assertFalse(blogSharingManager1.getSharedWith(blog1.getId())
-		assertTrue(contacts.contains(contact0From1));
+				.contains(contact0From1));
 
-		// sync response back
+		// 1 can again share blog 1 with 0
-		sync1To0(1, true);
+		assertTrue(
-		eventWaiter.await(TIMEOUT, 1);
+				blogSharingManager1.canBeShared(blog1.getId(), contact0From1));
-		assertTrue(listener0.responseReceived);
-
-		// blog was added and can be removed
-		assertEquals(3, blogManager1.getBlogs().size());
-		assertTrue(blogManager1.canBeRemoved(blog2.getId()));
-
-		// 1 and 2 are adding each other
-		addContacts1And2();
-		assertEquals(3, blogManager1.getBlogs().size());
-
-		// now blog can not be removed anymore
-		assertFalse(blogManager1.canBeRemoved(blog2.getId()));
 	}
 
 	@Test