add metadata/F-Droid changelog

fixes #3475

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Changelog
 
+### Version 2.5.4
+* stability improvements for group chats and channels
+
 ### Version 2.5.3
 * bug fixes for peer to peer file transfer (Jingle)
 * fixed server info for unlimited/unknown max file size

build.gradle

@@ -51,7 +51,7 @@ dependencies {
     conversationsFreeCompatImplementation "com.android.support:support-emoji-bundled:$supportLibVersion"
     quicksyFreeCompatImplementation "com.android.support:support-emoji-bundled:$supportLibVersion"
     implementation 'org.bouncycastle:bcmail-jdk15on:1.58'
-    implementation 'com.google.zxing:core:3.3.3'
+    implementation 'com.google.zxing:core:3.4.0'
     implementation 'de.measite.minidns:minidns-hla:0.2.4'
     implementation 'me.leolin:ShortcutBadger:1.1.22@aar'
     implementation 'org.whispersystems:signal-protocol-java:2.6.2'
@@ -59,13 +59,13 @@ dependencies {
     implementation "com.wefika:flowlayout:0.4.1"
     implementation 'net.ypresto.androidtranscoder:android-transcoder:0.3.0'
     implementation project(':libs:xmpp-addr')
-    implementation 'org.osmdroid:osmdroid-android:6.0.3'
+    implementation 'org.osmdroid:osmdroid-android:6.1.0'
     implementation 'org.hsluv:hsluv:0.2'
-    implementation 'org.conscrypt:conscrypt-android:1.3.0'
+    implementation 'org.conscrypt:conscrypt-android:2.1.0'
     implementation 'me.drakeet.support:toastcompat:1.1.0'
     implementation "com.leinardi.android:speed-dial:2.0.1"
-    implementation 'com.squareup.retrofit2:retrofit:2.5.0'
-    implementation 'com.squareup.retrofit2:converter-gson:2.5.0'
+    implementation 'com.squareup.retrofit2:retrofit:2.6.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.6.0'
     implementation 'com.google.guava:guava:27.1-android'
     quicksyImplementation 'io.michaelrocks:libphonenumber-android:8.10.1'
 }
@@ -81,8 +81,8 @@ android {
     defaultConfig {
         minSdkVersion 16
         targetSdkVersion 25
-        versionCode 330
-        versionName "2.5.3"
+        versionCode 333
+        versionName "2.5.4"
         archivesBaseName += "-$versionName"
         applicationId "eu.sum7.conversations"
         resValue "string", "applicationId", applicationId

metadata/en-US/changelogs/330.txt

@@ -0,0 +1,2 @@
+* bug fixes for peer to peer file transfer (Jingle)
+* fixed server info for unlimited/unknown max file size

metadata/en-US/changelogs/333.txt

@@ -0,0 +1 @@
+* stability improvements for group chats and channels

proguard-rules.pro

@@ -20,3 +20,34 @@
 -dontwarn com.google.firebase.analytics.connector.AnalyticsConnector
 -dontwarn java.lang.**
 -dontwarn javax.lang.**
+
+
+# Retrofit does reflection on generic parameters. InnerClasses is required to use Signature and
+# EnclosingMethod is required to use InnerClasses.
+-keepattributes Signature, InnerClasses, EnclosingMethod
+
+# Retrofit does reflection on method and parameter annotations.
+-keepattributes RuntimeVisibleAnnotations, RuntimeVisibleParameterAnnotations
+
+# Retain service method parameters when optimizing.
+-keepclassmembers,allowshrinking,allowobfuscation interface * {
+    @retrofit2.http.* <methods>;
+}
+
+# Ignore annotation used for build tooling.
+-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
+
+# Ignore JSR 305 annotations for embedding nullability information.
+-dontwarn javax.annotation.**
+
+# Guarded by a NoClassDefFoundError try/catch and only used when on the classpath.
+-dontwarn kotlin.Unit
+
+# Top-level functions that can only be used by Kotlin.
+-dontwarn retrofit2.KotlinExtensions
+-dontwarn retrofit2.KotlinExtensions$*
+
+# With R8 full mode, it sees no subtypes of Retrofit interfaces since they are created with a Proxy
+# and replaces all potential values with null. Explicitly keeping the interfaces prevents this.
+-if interface * { @retrofit2.http.* <methods>; }
+-keep,allowobfuscation interface <1>

src/conversations/res/values-ru/strings.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="pick_a_server">Выберите своего XMPP-провайдера</string>
+    <string name="use_conversations.im">Использовать conversations.im</string>
+    <string name="create_new_account">Создать новый аккаунт</string>
+    </resources>

src/free/java/eu/siacs/conversations/services/PushManagementService.java

@@ -1,6 +1,7 @@
 package eu.siacs.conversations.services;
 
 import eu.siacs.conversations.entities.Account;
+import eu.siacs.conversations.entities.Conversation;
 
 public class PushManagementService {
 
@@ -10,7 +11,19 @@ public class PushManagementService {
 		this.mXmppConnectionService = service;
 	}
 
-	public void registerPushTokenOnServer(Account account) {
+	void registerPushTokenOnServer(Account account) {
+		//stub implementation. only affects playstore flavor
+	}
+
+	void registerPushTokenOnServer(Conversation conversation) {
+		//stub implementation. only affects playstore flavor
+	}
+
+	void unregisterChannel(Account account, String hash) {
+		//stub implementation. only affects playstore flavor
+	}
+
+	void disablePushOnServer(Conversation conversation) {
 		//stub implementation. only affects playstore flavor
 	}
 

src/main/java/eu/siacs/conversations/crypto/PgpEngine.java

@@ -2,7 +2,6 @@ package eu.siacs.conversations.crypto;
 
 import android.app.PendingIntent;
 import android.content.Intent;
-import android.os.Parcelable;
 import android.support.annotation.StringRes;
 import android.util.Log;
 
@@ -94,7 +93,7 @@ public class PgpEngine {
 
 						break;
 					case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
-						callback.userInputRequried(result.getParcelableExtra(OpenPgpApi.RESULT_INTENT), message);
+						callback.userInputRequired(result.getParcelableExtra(OpenPgpApi.RESULT_INTENT), message);
 						break;
 					case OpenPgpApi.RESULT_CODE_ERROR:
 						OpenPgpError error = result.getParcelableExtra(OpenPgpApi.RESULT_ERROR);
@@ -133,7 +132,7 @@ public class PgpEngine {
 							callback.success(message);
 							break;
 						case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
-							callback.userInputRequried(result.getParcelableExtra(OpenPgpApi.RESULT_INTENT), message);
+							callback.userInputRequired(result.getParcelableExtra(OpenPgpApi.RESULT_INTENT), message);
 							break;
 						case OpenPgpApi.RESULT_CODE_ERROR:
 							logError(conversation.getAccount(), result.getParcelableExtra(OpenPgpApi.RESULT_ERROR));
@@ -200,7 +199,7 @@ public class PgpEngine {
 					callback.success(account);
 					return;
 				case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
-					callback.userInputRequried(result.getParcelableExtra(OpenPgpApi.RESULT_INTENT), account);
+					callback.userInputRequired(result.getParcelableExtra(OpenPgpApi.RESULT_INTENT), account);
 					return;
 				case OpenPgpApi.RESULT_CODE_ERROR:
 					logError(account, result.getParcelableExtra(OpenPgpApi.RESULT_ERROR));
@@ -249,7 +248,7 @@ public class PgpEngine {
 					callback.success(signatureBuilder.toString());
 					return;
 				case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
-					callback.userInputRequried(result.getParcelableExtra(OpenPgpApi.RESULT_INTENT), status);
+					callback.userInputRequired(result.getParcelableExtra(OpenPgpApi.RESULT_INTENT), status);
 					return;
 				case OpenPgpApi.RESULT_CODE_ERROR:
 					OpenPgpError error = result.getParcelableExtra(OpenPgpApi.RESULT_ERROR);
@@ -276,7 +275,7 @@ public class PgpEngine {
 						callback.success(contact);
 						return;
 					case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED:
-						callback.userInputRequried(result.getParcelableExtra(OpenPgpApi.RESULT_INTENT), contact);
+						callback.userInputRequired(result.getParcelableExtra(OpenPgpApi.RESULT_INTENT), contact);
 						return;
 					case OpenPgpApi.RESULT_CODE_ERROR:
 						logError(contact.getAccount(), result.getParcelableExtra(OpenPgpApi.RESULT_ERROR));

src/main/java/eu/siacs/conversations/entities/Account.java

@@ -64,8 +64,10 @@ public class Account extends AbstractEntity implements AvatarService.Avatarable
     protected final JSONObject keys;
     private final Roster roster = new Roster(this);
     private final Collection<Jid> blocklist = new CopyOnWriteArraySet<>();
-    public List<Conversation> pendingConferenceJoins = new CopyOnWriteArrayList<>();
-    public List<Conversation> pendingConferenceLeaves = new CopyOnWriteArrayList<>();
+    public final Set<Conversation> pendingConferenceJoins = new HashSet<>();
+    public final Set<Conversation> pendingConferenceLeaves = new HashSet<>();
+    public final Set<Conversation> inProgressConferenceJoins = new HashSet<>();
+    public final Set<Conversation> inProgressConferencePings = new HashSet<>();
     protected Jid jid;
     protected String password;
     protected int options = 0;

src/main/java/eu/siacs/conversations/entities/Conversation.java

@@ -54,6 +54,7 @@ public class Conversation extends AbstractEntity implements Blockable, Comparabl
 
 	public static final String ATTRIBUTE_MUTED_TILL = "muted_till";
 	public static final String ATTRIBUTE_ALWAYS_NOTIFY = "always_notify";
+	public static final String ATTRIBUTE_PUSH_NODE = "push_node";
 	public static final String ATTRIBUTE_LAST_CLEAR_HISTORY = "last_clear_history";
 	static final String ATTRIBUTE_MUC_PASSWORD = "muc_password";
 	private static final String ATTRIBUTE_NEXT_MESSAGE = "next_message";

src/main/java/eu/siacs/conversations/entities/MucOptions.java

@@ -17,6 +17,7 @@ import eu.siacs.conversations.services.AvatarService;
 import eu.siacs.conversations.services.MessageArchiveService;
 import eu.siacs.conversations.utils.JidHelper;
 import eu.siacs.conversations.utils.UIHelper;
+import eu.siacs.conversations.xml.Namespace;
 import eu.siacs.conversations.xmpp.chatstate.ChatState;
 import eu.siacs.conversations.xmpp.forms.Data;
 import eu.siacs.conversations.xmpp.forms.Field;
@@ -113,6 +114,10 @@ public class MucOptions {
         return MessageArchiveService.Version.has(getFeatures());
     }
 
+    public boolean push() {
+        return getFeatures().contains(Namespace.PUSH);
+    }
+
     public boolean updateConfiguration(ServiceDiscoveryResult serviceDiscoveryResult) {
         this.serviceDiscoveryResult = serviceDiscoveryResult;
         String name;

src/main/java/eu/siacs/conversations/entities/RawBlockable.java

@@ -0,0 +1,87 @@
+package eu.siacs.conversations.entities;
+
+import android.content.Context;
+import android.text.TextUtils;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Locale;
+
+import eu.siacs.conversations.utils.UIHelper;
+import rocks.xmpp.addr.Jid;
+
+public class RawBlockable implements ListItem, Blockable {
+
+    private final Account account;
+    private final Jid jid;
+
+    public RawBlockable(Account account, Jid jid) {
+        this.account = account;
+        this.jid = jid;
+    }
+
+    @Override
+    public boolean isBlocked() {
+        return true;
+    }
+
+    @Override
+    public boolean isDomainBlocked() {
+        throw new AssertionError("not implemented");
+    }
+
+    @Override
+    public Jid getBlockedJid() {
+        return this.jid;
+    }
+
+    @Override
+    public String getDisplayName() {
+        if (jid.isFullJid()) {
+            return jid.getResource();
+        } else {
+            return jid.toEscapedString();
+        }
+    }
+
+    @Override
+    public Jid getJid() {
+        return this.jid;
+    }
+
+    @Override
+    public List<Tag> getTags(Context context) {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public boolean match(Context context, String needle) {
+        if (TextUtils.isEmpty(needle)) {
+            return true;
+        }
+        needle = needle.toLowerCase(Locale.US).trim();
+        String[] parts = needle.split("\\s+");
+        for (String part : parts) {
+            if (!jid.toEscapedString().contains(part)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    @Override
+    public Account getAccount() {
+        return account;
+    }
+
+    @Override
+    public int getAvatarBackgroundColor() {
+        return  UIHelper.getColorForName(jid.toEscapedString());
+    }
+
+    @Override
+    public int compareTo(ListItem o) {
+        return this.getDisplayName().compareToIgnoreCase(
+				o.getDisplayName());
+    }
+}

src/main/java/eu/siacs/conversations/generator/IqGenerator.java

@@ -305,7 +305,7 @@ public class IqGenerator extends AbstractGenerator {
 	public IqPacket generateSetBlockRequest(final Jid jid, boolean reportSpam) {
 		final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
 		final Element block = iq.addChild("block", Namespace.BLOCKING);
-		final Element item = block.addChild("item").setAttribute("jid", jid.asBareJid().toString());
+		final Element item = block.addChild("item").setAttribute("jid", jid.toEscapedString());
 		if (reportSpam) {
 			item.addChild("report", "urn:xmpp:reporting:0").addChild("spam");
 		}
@@ -316,7 +316,7 @@ public class IqGenerator extends AbstractGenerator {
 	public IqPacket generateSetUnblockRequest(final Jid jid) {
 		final IqPacket iq = new IqPacket(IqPacket.TYPE.SET);
 		final Element block = iq.addChild("unblock", Namespace.BLOCKING);
-		block.addChild("item").setAttribute("jid", jid.asBareJid().toString());
+		block.addChild("item").setAttribute("jid", jid.toEscapedString());
 		return iq;
 	}
 
@@ -423,29 +423,60 @@ public class IqGenerator extends AbstractGenerator {
 	}
 
 	public IqPacket pushTokenToAppServer(Jid appServer, String token, String deviceId) {
-		IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
+		return pushTokenToAppServer(appServer, token, deviceId, null);
+	}
+
+	public IqPacket pushTokenToAppServer(Jid appServer, String token, String deviceId, Jid muc) {
+		final IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
 		packet.setTo(appServer);
-		Element command = packet.addChild("command", "http://jabber.org/protocol/commands");
+		final Element command = packet.addChild("command", Namespace.COMMANDS);
 		command.setAttribute("node", "register-push-fcm");
 		command.setAttribute("action", "execute");
-		Data data = new Data();
+		final Data data = new Data();
 		data.put("token", token);
 		data.put("android-id", deviceId);
+		if (muc != null) {
+			data.put("muc", muc.toEscapedString());
+		}
+		data.submit();
+		command.addChild(data);
+		return packet;
+	}
+
+	public IqPacket unregisterChannelOnAppServer(Jid appServer, String deviceId, String channel) {
+		final IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
+		packet.setTo(appServer);
+		final Element command = packet.addChild("command", Namespace.COMMANDS);
+		command.setAttribute("node", "unregister-push-fcm");
+		command.setAttribute("action", "execute");
+		final Data data = new Data();
+		data.put("channel", channel);
+		data.put("android-id", deviceId);
 		data.submit();
 		command.addChild(data);
 		return packet;
 	}
 
-	public IqPacket enablePush(Jid jid, String node, String secret) {
+	public IqPacket enablePush(final Jid jid, final String node, final String secret) {
 		IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
-		Element enable = packet.addChild("enable", "urn:xmpp:push:0");
+		Element enable = packet.addChild("enable", Namespace.PUSH);
 		enable.setAttribute("jid", jid.toString());
 		enable.setAttribute("node", node);
-		Data data = new Data();
-		data.setFormType(Namespace.PUBSUB_PUBLISH_OPTIONS);
-		data.put("secret", secret);
-		data.submit();
-		enable.addChild(data);
+		if (secret != null) {
+			Data data = new Data();
+			data.setFormType(Namespace.PUBSUB_PUBLISH_OPTIONS);
+			data.put("secret", secret);
+			data.submit();
+			enable.addChild(data);
+		}
+		return packet;
+	}
+
+	public IqPacket disablePush(final Jid jid, final String node) {
+		IqPacket packet = new IqPacket(IqPacket.TYPE.SET);
+		Element disable = packet.addChild("disable", Namespace.PUSH);
+		disable.setAttribute("jid", jid.toEscapedString());
+		disable.setAttribute("node", node);
 		return packet;
 	}
 

src/main/java/eu/siacs/conversations/parser/IqParser.java

@@ -26,6 +26,7 @@ import eu.siacs.conversations.Config;
 import eu.siacs.conversations.crypto.axolotl.AxolotlService;
 import eu.siacs.conversations.entities.Account;
 import eu.siacs.conversations.entities.Contact;
+import eu.siacs.conversations.entities.Conversation;
 import eu.siacs.conversations.services.XmppConnectionService;
 import eu.siacs.conversations.xml.Namespace;
 import eu.siacs.conversations.xml.Element;
@@ -37,360 +38,383 @@ import rocks.xmpp.addr.Jid;
 
 public class IqParser extends AbstractParser implements OnIqPacketReceived {
 
-	public IqParser(final XmppConnectionService service) {
-		super(service);
-	}
+    public IqParser(final XmppConnectionService service) {
+        super(service);
+    }
 
-	private void rosterItems(final Account account, final Element query) {
-		final String version = query.getAttribute("ver");
-		if (version != null) {
-			account.getRoster().setVersion(version);
-		}
-		for (final Element item : query.getChildren()) {
-			if (item.getName().equals("item")) {
-				final Jid jid = InvalidJid.getNullForInvalid(item.getAttributeAsJid("jid"));
-				if (jid == null) {
-					continue;
-				}
-				final String name = item.getAttribute("name");
-				final String subscription = item.getAttribute("subscription");
-				final Contact contact = account.getRoster().getContact(jid);
-				boolean bothPre = contact.getOption(Contact.Options.TO) && contact.getOption(Contact.Options.FROM);
-				if (!contact.getOption(Contact.Options.DIRTY_PUSH)) {
-					contact.setServerName(name);
-					contact.parseGroupsFromElement(item);
-				}
-				if ("remove".equals(subscription)) {
-					contact.resetOption(Contact.Options.IN_ROSTER);
-					contact.resetOption(Contact.Options.DIRTY_DELETE);
-					contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
-				} else {
-					contact.setOption(Contact.Options.IN_ROSTER);
-					contact.resetOption(Contact.Options.DIRTY_PUSH);
-					contact.parseSubscriptionFromElement(item);
-				}
-				boolean both = contact.getOption(Contact.Options.TO) && contact.getOption(Contact.Options.FROM);
-				if ((both != bothPre) && both) {
-					Log.d(Config.LOGTAG,account.getJid().asBareJid()+": gained mutual presence subscription with "+contact.getJid());
-					AxolotlService axolotlService = account.getAxolotlService();
-					if (axolotlService != null) {
-						axolotlService.clearErrorsInFetchStatusMap(contact.getJid());
-					}
-				}
-				mXmppConnectionService.getAvatarService().clear(contact);
-			}
-		}
-		mXmppConnectionService.updateConversationUi();
-		mXmppConnectionService.updateRosterUi();
-		mXmppConnectionService.getShortcutService().refresh();
-		mXmppConnectionService.syncRoster(account);
-	}
+    private void rosterItems(final Account account, final Element query) {
+        final String version = query.getAttribute("ver");
+        if (version != null) {
+            account.getRoster().setVersion(version);
+        }
+        for (final Element item : query.getChildren()) {
+            if (item.getName().equals("item")) {
+                final Jid jid = InvalidJid.getNullForInvalid(item.getAttributeAsJid("jid"));
+                if (jid == null) {
+                    continue;
+                }
+                final String name = item.getAttribute("name");
+                final String subscription = item.getAttribute("subscription");
+                final Contact contact = account.getRoster().getContact(jid);
+                boolean bothPre = contact.getOption(Contact.Options.TO) && contact.getOption(Contact.Options.FROM);
+                if (!contact.getOption(Contact.Options.DIRTY_PUSH)) {
+                    contact.setServerName(name);
+                    contact.parseGroupsFromElement(item);
+                }
+                if ("remove".equals(subscription)) {
+                    contact.resetOption(Contact.Options.IN_ROSTER);
+                    contact.resetOption(Contact.Options.DIRTY_DELETE);
+                    contact.resetOption(Contact.Options.PREEMPTIVE_GRANT);
+                } else {
+                    contact.setOption(Contact.Options.IN_ROSTER);
+                    contact.resetOption(Contact.Options.DIRTY_PUSH);
+                    contact.parseSubscriptionFromElement(item);
+                }
+                boolean both = contact.getOption(Contact.Options.TO) && contact.getOption(Contact.Options.FROM);
+                if ((both != bothPre) && both) {
+                    Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": gained mutual presence subscription with " + contact.getJid());
+                    AxolotlService axolotlService = account.getAxolotlService();
+                    if (axolotlService != null) {
+                        axolotlService.clearErrorsInFetchStatusMap(contact.getJid());
+                    }
+                }
+                mXmppConnectionService.getAvatarService().clear(contact);
+            }
+        }
+        mXmppConnectionService.updateConversationUi();
+        mXmppConnectionService.updateRosterUi();
+        mXmppConnectionService.getShortcutService().refresh();
+        mXmppConnectionService.syncRoster(account);
+    }
 
-	public String avatarData(final IqPacket packet) {
-		final Element pubsub = packet.findChild("pubsub", Namespace.PUBSUB);
-		if (pubsub == null) {
-			return null;
-		}
-		final Element items = pubsub.findChild("items");
-		if (items == null) {
-			return null;
-		}
-		return super.avatarData(items);
-	}
+    public String avatarData(final IqPacket packet) {
+        final Element pubsub = packet.findChild("pubsub", Namespace.PUBSUB);
+        if (pubsub == null) {
+            return null;
+        }
+        final Element items = pubsub.findChild("items");
+        if (items == null) {
+            return null;
+        }
+        return super.avatarData(items);
+    }
 
-	public Element getItem(final IqPacket packet) {
-		final Element pubsub = packet.findChild("pubsub", Namespace.PUBSUB);
-		if (pubsub == null) {
-			return null;
-		}
-		final Element items = pubsub.findChild("items");
-		if (items == null) {
-			return null;
-		}
-		return items.findChild("item");
-	}
+    public Element getItem(final IqPacket packet) {
+        final Element pubsub = packet.findChild("pubsub", Namespace.PUBSUB);
+        if (pubsub == null) {
+            return null;
+        }
+        final Element items = pubsub.findChild("items");
+        if (items == null) {
+            return null;
+        }
+        return items.findChild("item");
+    }
 
-	@NonNull
-	public Set<Integer> deviceIds(final Element item) {
-		Set<Integer> deviceIds = new HashSet<>();
-		if (item != null) {
-			final Element list = item.findChild("list");
-			if (list != null) {
-				for (Element device : list.getChildren()) {
-					if (!device.getName().equals("device")) {
-						continue;
-					}
-					try {
-						Integer id = Integer.valueOf(device.getAttribute("id"));
-						deviceIds.add(id);
-					} catch (NumberFormatException e) {
-						Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Encountered invalid <device> node in PEP ("+e.getMessage()+"):" + device.toString()+ ", skipping...");
-						continue;
-					}
-				}
-			}
-		}
-		return deviceIds;
-	}
+    @NonNull
+    public Set<Integer> deviceIds(final Element item) {
+        Set<Integer> deviceIds = new HashSet<>();
+        if (item != null) {
+            final Element list = item.findChild("list");
+            if (list != null) {
+                for (Element device : list.getChildren()) {
+                    if (!device.getName().equals("device")) {
+                        continue;
+                    }
+                    try {
+                        Integer id = Integer.valueOf(device.getAttribute("id"));
+                        deviceIds.add(id);
+                    } catch (NumberFormatException e) {
+                        Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX + " : " + "Encountered invalid <device> node in PEP (" + e.getMessage() + "):" + device.toString() + ", skipping...");
+                        continue;
+                    }
+                }
+            }
+        }
+        return deviceIds;
+    }
 
-	public Integer signedPreKeyId(final Element bundle) {
-		final Element signedPreKeyPublic = bundle.findChild("signedPreKeyPublic");
-		if(signedPreKeyPublic == null) {
-			return null;
-		}
-		try {
-			return Integer.valueOf(signedPreKeyPublic.getAttribute("signedPreKeyId"));
-		} catch (NumberFormatException e) {
-			return null;
-		}
-	}
+    public Integer signedPreKeyId(final Element bundle) {
+        final Element signedPreKeyPublic = bundle.findChild("signedPreKeyPublic");
+        if (signedPreKeyPublic == null) {
+            return null;
+        }
+        try {
+            return Integer.valueOf(signedPreKeyPublic.getAttribute("signedPreKeyId"));
+        } catch (NumberFormatException e) {
+            return null;
+        }
+    }
 
-	public ECPublicKey signedPreKeyPublic(final Element bundle) {
-		ECPublicKey publicKey = null;
-		final Element signedPreKeyPublic = bundle.findChild("signedPreKeyPublic");
-		if(signedPreKeyPublic == null) {
-			return null;
-		}
-		try {
-			publicKey = Curve.decodePoint(Base64.decode(signedPreKeyPublic.getContent(),Base64.DEFAULT), 0);
-		} catch (Throwable e) {
-			Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Invalid signedPreKeyPublic in PEP: " + e.getMessage());
-		}
-		return publicKey;
-	}
+    public ECPublicKey signedPreKeyPublic(final Element bundle) {
+        ECPublicKey publicKey = null;
+        final Element signedPreKeyPublic = bundle.findChild("signedPreKeyPublic");
+        if (signedPreKeyPublic == null) {
+            return null;
+        }
+        try {
+            publicKey = Curve.decodePoint(Base64.decode(signedPreKeyPublic.getContent(), Base64.DEFAULT), 0);
+        } catch (Throwable e) {
+            Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX + " : " + "Invalid signedPreKeyPublic in PEP: " + e.getMessage());
+        }
+        return publicKey;
+    }
 
-	public byte[] signedPreKeySignature(final Element bundle) {
-		final Element signedPreKeySignature = bundle.findChild("signedPreKeySignature");
-		if(signedPreKeySignature == null) {
-			return null;
-		}
-		try {
-			return Base64.decode(signedPreKeySignature.getContent(), Base64.DEFAULT);
-		} catch (Throwable e) {
-			Log.e(Config.LOGTAG,AxolotlService.LOGPREFIX+" : Invalid base64 in signedPreKeySignature");
-			return null;
-		}
-	}
+    public byte[] signedPreKeySignature(final Element bundle) {
+        final Element signedPreKeySignature = bundle.findChild("signedPreKeySignature");
+        if (signedPreKeySignature == null) {
+            return null;
+        }
+        try {
+            return Base64.decode(signedPreKeySignature.getContent(), Base64.DEFAULT);
+        } catch (Throwable e) {
+            Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX + " : Invalid base64 in signedPreKeySignature");
+            return null;
+        }
+    }
 
-	public IdentityKey identityKey(final Element bundle) {
-		IdentityKey identityKey = null;
-		final Element identityKeyElement = bundle.findChild("identityKey");
-		if(identityKeyElement == null) {
-			return null;
-		}
-		try {
-			identityKey = new IdentityKey(Base64.decode(identityKeyElement.getContent(), Base64.DEFAULT), 0);
-		} catch (Throwable e) {
-			Log.e(Config.LOGTAG,AxolotlService.LOGPREFIX+" : "+"Invalid identityKey in PEP: "+e.getMessage());
-		}
-		return identityKey;
-	}
+    public IdentityKey identityKey(final Element bundle) {
+        IdentityKey identityKey = null;
+        final Element identityKeyElement = bundle.findChild("identityKey");
+        if (identityKeyElement == null) {
+            return null;
+        }
+        try {
+            identityKey = new IdentityKey(Base64.decode(identityKeyElement.getContent(), Base64.DEFAULT), 0);
+        } catch (Throwable e) {
+            Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX + " : " + "Invalid identityKey in PEP: " + e.getMessage());
+        }
+        return identityKey;
+    }
 
-	public Map<Integer, ECPublicKey> preKeyPublics(final IqPacket packet) {
-		Map<Integer, ECPublicKey> preKeyRecords = new HashMap<>();
-		Element item = getItem(packet);
-		if (item == null) {
-			Log.d(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Couldn't find <item> in bundle IQ packet: " + packet);
-			return null;
-		}
-		final Element bundleElement = item.findChild("bundle");
-		if(bundleElement == null) {
-			return null;
-		}
-		final Element prekeysElement = bundleElement.findChild("prekeys");
-		if(prekeysElement == null) {
-			Log.d(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Couldn't find <prekeys> in bundle IQ packet: " + packet);
-			return null;
-		}
-		for(Element preKeyPublicElement : prekeysElement.getChildren()) {
-			if(!preKeyPublicElement.getName().equals("preKeyPublic")){
-				Log.d(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Encountered unexpected tag in prekeys list: " + preKeyPublicElement);
-				continue;
-			}
-			Integer preKeyId = null;
-			try {
-				preKeyId = Integer.valueOf(preKeyPublicElement.getAttribute("preKeyId"));
-				final ECPublicKey preKeyPublic = Curve.decodePoint(Base64.decode(preKeyPublicElement.getContent(), Base64.DEFAULT), 0);
-				preKeyRecords.put(preKeyId, preKeyPublic);
-			} catch (NumberFormatException e) {
-				Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"could not parse preKeyId from preKey "+preKeyPublicElement.toString());
-			} catch (Throwable e) {
-				Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX+" : "+"Invalid preKeyPublic (ID="+preKeyId+") in PEP: "+ e.getMessage()+", skipping...");
-			}
-		}
-		return preKeyRecords;
-	}
+    public Map<Integer, ECPublicKey> preKeyPublics(final IqPacket packet) {
+        Map<Integer, ECPublicKey> preKeyRecords = new HashMap<>();
+        Element item = getItem(packet);
+        if (item == null) {
+            Log.d(Config.LOGTAG, AxolotlService.LOGPREFIX + " : " + "Couldn't find <item> in bundle IQ packet: " + packet);
+            return null;
+        }
+        final Element bundleElement = item.findChild("bundle");
+        if (bundleElement == null) {
+            return null;
+        }
+        final Element prekeysElement = bundleElement.findChild("prekeys");
+        if (prekeysElement == null) {
+            Log.d(Config.LOGTAG, AxolotlService.LOGPREFIX + " : " + "Couldn't find <prekeys> in bundle IQ packet: " + packet);
+            return null;
+        }
+        for (Element preKeyPublicElement : prekeysElement.getChildren()) {
+            if (!preKeyPublicElement.getName().equals("preKeyPublic")) {
+                Log.d(Config.LOGTAG, AxolotlService.LOGPREFIX + " : " + "Encountered unexpected tag in prekeys list: " + preKeyPublicElement);
+                continue;
+            }
+            Integer preKeyId = null;
+            try {
+                preKeyId = Integer.valueOf(preKeyPublicElement.getAttribute("preKeyId"));
+                final ECPublicKey preKeyPublic = Curve.decodePoint(Base64.decode(preKeyPublicElement.getContent(), Base64.DEFAULT), 0);
+                preKeyRecords.put(preKeyId, preKeyPublic);
+            } catch (NumberFormatException e) {
+                Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX + " : " + "could not parse preKeyId from preKey " + preKeyPublicElement.toString());
+            } catch (Throwable e) {
+                Log.e(Config.LOGTAG, AxolotlService.LOGPREFIX + " : " + "Invalid preKeyPublic (ID=" + preKeyId + ") in PEP: " + e.getMessage() + ", skipping...");
+            }
+        }
+        return preKeyRecords;
+    }
 
-	public Pair<X509Certificate[],byte[]> verification(final IqPacket packet) {
-		Element item = getItem(packet);
-		Element verification = item != null ? item.findChild("verification",AxolotlService.PEP_PREFIX) : null;
-		Element chain = verification != null ? verification.findChild("chain") : null;
-		Element signature = verification != null ? verification.findChild("signature") : null;
-		if (chain != null && signature != null) {
-			List<Element> certElements = chain.getChildren();
-			X509Certificate[] certificates = new X509Certificate[certElements.size()];
-			try {
-				CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
-				int i = 0;
-				for(Element cert : certElements) {
-					certificates[i] = (X509Certificate) certificateFactory.generateCertificate(new ByteArrayInputStream(Base64.decode(cert.getContent(),Base64.DEFAULT)));
-					++i;
-				}
-				return new Pair<>(certificates,Base64.decode(signature.getContent(),Base64.DEFAULT));
-			} catch (CertificateException e) {
-				return null;
-			}
-		} else {
-			return null;
-		}
-	}
+    public Pair<X509Certificate[], byte[]> verification(final IqPacket packet) {
+        Element item = getItem(packet);
+        Element verification = item != null ? item.findChild("verification", AxolotlService.PEP_PREFIX) : null;
+        Element chain = verification != null ? verification.findChild("chain") : null;
+        Element signature = verification != null ? verification.findChild("signature") : null;
+        if (chain != null && signature != null) {
+            List<Element> certElements = chain.getChildren();
+            X509Certificate[] certificates = new X509Certificate[certElements.size()];
+            try {
+                CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
+                int i = 0;
+                for (Element cert : certElements) {
+                    certificates[i] = (X509Certificate) certificateFactory.generateCertificate(new ByteArrayInputStream(Base64.decode(cert.getContent(), Base64.DEFAULT)));
+                    ++i;
+                }
+                return new Pair<>(certificates, Base64.decode(signature.getContent(), Base64.DEFAULT));
+            } catch (CertificateException e) {
+                return null;
+            }
+        } else {
+            return null;
+        }
+    }
 
-	public PreKeyBundle bundle(final IqPacket bundle) {
-		Element bundleItem = getItem(bundle);
-		if(bundleItem == null) {
-			return null;
-		}
-		final Element bundleElement = bundleItem.findChild("bundle");
-		if(bundleElement == null) {
-			return null;
-		}
-		ECPublicKey signedPreKeyPublic = signedPreKeyPublic(bundleElement);
-		Integer signedPreKeyId = signedPreKeyId(bundleElement);
-		byte[] signedPreKeySignature = signedPreKeySignature(bundleElement);
-		IdentityKey identityKey = identityKey(bundleElement);
-		if(signedPreKeyId == null || signedPreKeyPublic == null || identityKey == null) {
-			return null;
-		}
+    public PreKeyBundle bundle(final IqPacket bundle) {
+        Element bundleItem = getItem(bundle);
+        if (bundleItem == null) {
+            return null;
+        }
+        final Element bundleElement = bundleItem.findChild("bundle");
+        if (bundleElement == null) {
+            return null;
+        }
+        ECPublicKey signedPreKeyPublic = signedPreKeyPublic(bundleElement);
+        Integer signedPreKeyId = signedPreKeyId(bundleElement);
+        byte[] signedPreKeySignature = signedPreKeySignature(bundleElement);
+        IdentityKey identityKey = identityKey(bundleElement);
+        if (signedPreKeyId == null || signedPreKeyPublic == null || identityKey == null) {
+            return null;
+        }
 
-		return new PreKeyBundle(0, 0, 0, null,
-				signedPreKeyId, signedPreKeyPublic, signedPreKeySignature, identityKey);
-	}
+        return new PreKeyBundle(0, 0, 0, null,
+                signedPreKeyId, signedPreKeyPublic, signedPreKeySignature, identityKey);
+    }
 
-	public List<PreKeyBundle> preKeys(final IqPacket preKeys) {
-		List<PreKeyBundle> bundles = new ArrayList<>();
-		Map<Integer, ECPublicKey> preKeyPublics = preKeyPublics(preKeys);
-		if ( preKeyPublics != null) {
-			for (Integer preKeyId : preKeyPublics.keySet()) {
-				ECPublicKey preKeyPublic = preKeyPublics.get(preKeyId);
-				bundles.add(new PreKeyBundle(0, 0, preKeyId, preKeyPublic,
-						0, null, null, null));
-			}
-		}
+    public List<PreKeyBundle> preKeys(final IqPacket preKeys) {
+        List<PreKeyBundle> bundles = new ArrayList<>();
+        Map<Integer, ECPublicKey> preKeyPublics = preKeyPublics(preKeys);
+        if (preKeyPublics != null) {
+            for (Integer preKeyId : preKeyPublics.keySet()) {
+                ECPublicKey preKeyPublic = preKeyPublics.get(preKeyId);
+                bundles.add(new PreKeyBundle(0, 0, preKeyId, preKeyPublic,
+                        0, null, null, null));
+            }
+        }
 
-		return bundles;
-	}
+        return bundles;
+    }
 
-	@Override
-	public void onIqPacketReceived(final Account account, final IqPacket packet) {
-		final boolean isGet = packet.getType() == IqPacket.TYPE.GET;
-		if (packet.getType() == IqPacket.TYPE.ERROR || packet.getType() == IqPacket.TYPE.TIMEOUT) {
-			return;
-		}
-		if (packet.hasChild("query", Namespace.ROSTER) && packet.fromServer(account)) {
-			final Element query = packet.findChild("query");
-			// If this is in response to a query for the whole roster:
-			if (packet.getType() == IqPacket.TYPE.RESULT) {
-				account.getRoster().markAllAsNotInRoster();
-			}
-			this.rosterItems(account, query);
-		} else if ((packet.hasChild("block", Namespace.BLOCKING) || packet.hasChild("blocklist", Namespace.BLOCKING)) &&
-				packet.fromServer(account)) {
-			// Block list or block push.
-			Log.d(Config.LOGTAG, "Received blocklist update from server");
-			final Element blocklist = packet.findChild("blocklist", Namespace.BLOCKING);
-			final Element block = packet.findChild("block", Namespace.BLOCKING);
-			final Collection<Element> items = blocklist != null ? blocklist.getChildren() :
-				(block != null ? block.getChildren() : null);
-			// If this is a response to a blocklist query, clear the block list and replace with the new one.
-			// Otherwise, just update the existing blocklist.
-			if (packet.getType() == IqPacket.TYPE.RESULT) {
-				account.clearBlocklist();
-				account.getXmppConnection().getFeatures().setBlockListRequested(true);
-			}
-			if (items != null) {
-				final Collection<Jid> jids = new ArrayList<>(items.size());
-				// Create a collection of Jids from the packet
-				for (final Element item : items) {
-					if (item.getName().equals("item")) {
-						final Jid jid = InvalidJid.getNullForInvalid(item.getAttributeAsJid("jid"));
-						if (jid != null) {
-							jids.add(jid);
-						}
-					}
-				}
-				account.getBlocklist().addAll(jids);
-				if (packet.getType() == IqPacket.TYPE.SET) {
-					boolean removed = false;
-					for(Jid jid : jids) {
-						removed |= mXmppConnectionService.removeBlockedConversations(account,jid);
-					}
-					if (removed) {
-						mXmppConnectionService.updateConversationUi();
-					}
-				}
-			}
-			// Update the UI
-			mXmppConnectionService.updateBlocklistUi(OnUpdateBlocklist.Status.BLOCKED);
-			if (packet.getType() == IqPacket.TYPE.SET) {
-				final IqPacket response = packet.generateResponse(IqPacket.TYPE.RESULT);
-				mXmppConnectionService.sendIqPacket(account, response, null);
-			}
-		} else if (packet.hasChild("unblock", Namespace.BLOCKING) &&
-				packet.fromServer(account) && packet.getType() == IqPacket.TYPE.SET) {
-			Log.d(Config.LOGTAG, "Received unblock update from server");
-			final Collection<Element> items = packet.findChild("unblock", Namespace.BLOCKING).getChildren();
-			if (items.size() == 0) {
-				// No children to unblock == unblock all
-				account.getBlocklist().clear();
-			} else {
-				final Collection<Jid> jids = new ArrayList<>(items.size());
-				for (final Element item : items) {
-					if (item.getName().equals("item")) {
-						final Jid jid = InvalidJid.getNullForInvalid(item.getAttributeAsJid("jid"));
-						if (jid != null) {
-							jids.add(jid);
-						}
-					}
-				}
-				account.getBlocklist().removeAll(jids);
-			}
-			mXmppConnectionService.updateBlocklistUi(OnUpdateBlocklist.Status.UNBLOCKED);
-			final IqPacket response = packet.generateResponse(IqPacket.TYPE.RESULT);
-			mXmppConnectionService.sendIqPacket(account, response, null);
-		} else if (packet.hasChild("open", "http://jabber.org/protocol/ibb")
-				|| packet.hasChild("data", "http://jabber.org/protocol/ibb")
-				|| packet.hasChild("close","http://jabber.org/protocol/ibb")) {
-			mXmppConnectionService.getJingleConnectionManager()
-				.deliverIbbPacket(account, packet);
-		} else if (packet.hasChild("query", "http://jabber.org/protocol/disco#info")) {
-			final IqPacket response = mXmppConnectionService.getIqGenerator().discoResponse(account, packet);
-			mXmppConnectionService.sendIqPacket(account, response, null);
-		} else if (packet.hasChild("query","jabber:iq:version") && isGet) {
-			final IqPacket response = mXmppConnectionService.getIqGenerator().versionResponse(packet);
-			mXmppConnectionService.sendIqPacket(account,response,null);
-		} else if (packet.hasChild("ping", "urn:xmpp:ping") && isGet) {
-			final IqPacket response = packet.generateResponse(IqPacket.TYPE.RESULT);
-			mXmppConnectionService.sendIqPacket(account, response, null);
-		} else if (packet.hasChild("time","urn:xmpp:time") && isGet) {
-			final IqPacket response;
-			if (mXmppConnectionService.useTorToConnect() || account.isOnion()) {
-				response = packet.generateResponse(IqPacket.TYPE.ERROR);
-				final Element error = response.addChild("error");
-				error.setAttribute("type","cancel");
-				error.addChild("not-allowed","urn:ietf:params:xml:ns:xmpp-stanzas");
-			} else {
-				response = mXmppConnectionService.getIqGenerator().entityTimeResponse(packet);
-			}
-			mXmppConnectionService.sendIqPacket(account,response, null);
-		} else {
-			if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
-				final IqPacket response = packet.generateResponse(IqPacket.TYPE.ERROR);
-				final Element error = response.addChild("error");
-				error.setAttribute("type", "cancel");
-				error.addChild("feature-not-implemented","urn:ietf:params:xml:ns:xmpp-stanzas");
-				account.getXmppConnection().sendIqPacket(response, null);
-			}
-		}
-	}
+    @Override
+    public void onIqPacketReceived(final Account account, final IqPacket packet) {
+        final boolean isGet = packet.getType() == IqPacket.TYPE.GET;
+        if (packet.getType() == IqPacket.TYPE.ERROR || packet.getType() == IqPacket.TYPE.TIMEOUT) {
+            return;
+        }
+        if (packet.hasChild("query", Namespace.ROSTER) && packet.fromServer(account)) {
+            final Element query = packet.findChild("query");
+            // If this is in response to a query for the whole roster:
+            if (packet.getType() == IqPacket.TYPE.RESULT) {
+                account.getRoster().markAllAsNotInRoster();
+            }
+            this.rosterItems(account, query);
+        } else if ((packet.hasChild("block", Namespace.BLOCKING) || packet.hasChild("blocklist", Namespace.BLOCKING)) &&
+                packet.fromServer(account)) {
+            // Block list or block push.
+            Log.d(Config.LOGTAG, "Received blocklist update from server");
+            final Element blocklist = packet.findChild("blocklist", Namespace.BLOCKING);
+            final Element block = packet.findChild("block", Namespace.BLOCKING);
+            final Collection<Element> items = blocklist != null ? blocklist.getChildren() :
+                    (block != null ? block.getChildren() : null);
+            // If this is a response to a blocklist query, clear the block list and replace with the new one.
+            // Otherwise, just update the existing blocklist.
+            if (packet.getType() == IqPacket.TYPE.RESULT) {
+                account.clearBlocklist();
+                account.getXmppConnection().getFeatures().setBlockListRequested(true);
+            }
+            if (items != null) {
+                final Collection<Jid> jids = new ArrayList<>(items.size());
+                // Create a collection of Jids from the packet
+                for (final Element item : items) {
+                    if (item.getName().equals("item")) {
+                        final Jid jid = InvalidJid.getNullForInvalid(item.getAttributeAsJid("jid"));
+                        if (jid != null) {
+                            jids.add(jid);
+                        }
+                    }
+                }
+                account.getBlocklist().addAll(jids);
+                if (packet.getType() == IqPacket.TYPE.SET) {
+                    boolean removed = false;
+                    for (Jid jid : jids) {
+                        removed |= mXmppConnectionService.removeBlockedConversations(account, jid);
+                    }
+                    if (removed) {
+                        mXmppConnectionService.updateConversationUi();
+                    }
+                }
+            }
+            // Update the UI
+            mXmppConnectionService.updateBlocklistUi(OnUpdateBlocklist.Status.BLOCKED);
+            if (packet.getType() == IqPacket.TYPE.SET) {
+                final IqPacket response = packet.generateResponse(IqPacket.TYPE.RESULT);
+                mXmppConnectionService.sendIqPacket(account, response, null);
+            }
+        } else if (packet.hasChild("unblock", Namespace.BLOCKING) &&
+                packet.fromServer(account) && packet.getType() == IqPacket.TYPE.SET) {
+            Log.d(Config.LOGTAG, "Received unblock update from server");
+            final Collection<Element> items = packet.findChild("unblock", Namespace.BLOCKING).getChildren();
+            if (items.size() == 0) {
+                // No children to unblock == unblock all
+                account.getBlocklist().clear();
+            } else {
+                final Collection<Jid> jids = new ArrayList<>(items.size());
+                for (final Element item : items) {
+                    if (item.getName().equals("item")) {
+                        final Jid jid = InvalidJid.getNullForInvalid(item.getAttributeAsJid("jid"));
+                        if (jid != null) {
+                            jids.add(jid);
+                        }
+                    }
+                }
+                account.getBlocklist().removeAll(jids);
+            }
+            mXmppConnectionService.updateBlocklistUi(OnUpdateBlocklist.Status.UNBLOCKED);
+            final IqPacket response = packet.generateResponse(IqPacket.TYPE.RESULT);
+            mXmppConnectionService.sendIqPacket(account, response, null);
+        } else if (packet.hasChild("open", "http://jabber.org/protocol/ibb")
+                || packet.hasChild("data", "http://jabber.org/protocol/ibb")
+                || packet.hasChild("close", "http://jabber.org/protocol/ibb")) {
+            mXmppConnectionService.getJingleConnectionManager()
+                    .deliverIbbPacket(account, packet);
+        } else if (packet.hasChild("query", "http://jabber.org/protocol/disco#info")) {
+            final IqPacket response = mXmppConnectionService.getIqGenerator().discoResponse(account, packet);
+            mXmppConnectionService.sendIqPacket(account, response, null);
+        } else if (packet.hasChild("query", "jabber:iq:version") && isGet) {
+            final IqPacket response = mXmppConnectionService.getIqGenerator().versionResponse(packet);
+            mXmppConnectionService.sendIqPacket(account, response, null);
+        } else if (packet.hasChild("ping", "urn:xmpp:ping") && isGet) {
+            final IqPacket response = packet.generateResponse(IqPacket.TYPE.RESULT);
+            mXmppConnectionService.sendIqPacket(account, response, null);
+        } else if (packet.hasChild("time", "urn:xmpp:time") && isGet) {
+            final IqPacket response;
+            if (mXmppConnectionService.useTorToConnect() || account.isOnion()) {
+                response = packet.generateResponse(IqPacket.TYPE.ERROR);
+                final Element error = response.addChild("error");
+                error.setAttribute("type", "cancel");
+                error.addChild("not-allowed", "urn:ietf:params:xml:ns:xmpp-stanzas");
+            } else {
+                response = mXmppConnectionService.getIqGenerator().entityTimeResponse(packet);
+            }
+            mXmppConnectionService.sendIqPacket(account, response, null);
+        } else if (packet.hasChild("pubsub", Namespace.PUBSUB) && packet.getType() == IqPacket.TYPE.SET) {
+            final Jid server = packet.getFrom();
+            final Element pubsub = packet.findChild("pubsub", Namespace.PUBSUB);
+            final Element publish = pubsub == null ? null : pubsub.findChild("publish");
+            final String node = publish == null ? null : publish.getAttribute("node");
+            final Element item = publish == null ? null : publish.findChild("item");
+            final Element notification = item == null ? null : item.findChild("notification", Namespace.PUSH);
+            if (notification != null && node != null && server != null) {
+                final Conversation conversation = mXmppConnectionService.findConversationByUuid(node);
+                if (conversation != null && conversation.getAccount() == account && conversation.getJid().getDomain().equals(server.getDomain())) {
+                    Log.d(Config.LOGTAG,account.getJid().asBareJid()+": received muc push event for "+conversation.getJid().asBareJid());
+                    mXmppConnectionService.sendIqPacket(account, packet.generateResponse(IqPacket.TYPE.RESULT), null);
+                    mXmppConnectionService.mucSelfPingAndRejoin(conversation);
+                } else {
+                    Log.d(Config.LOGTAG,account.getJid().asBareJid()+": received push event for unknown conference from "+server);
+                    final IqPacket response = packet.generateResponse(IqPacket.TYPE.ERROR);
+                    final Element error = response.addChild("error");
+                    error.setAttribute("type", "cancel");
+                    error.addChild("item-not-found", "urn:ietf:params:xml:ns:xmpp-stanzas");
+                    mXmppConnectionService.sendIqPacket(account, response, null);
+                }
+            }
+
+        } else {
+            if (packet.getType() == IqPacket.TYPE.GET || packet.getType() == IqPacket.TYPE.SET) {
+                final IqPacket response = packet.generateResponse(IqPacket.TYPE.ERROR);
+                final Element error = response.addChild("error");
+                error.setAttribute("type", "cancel");
+                error.addChild("feature-not-implemented", "urn:ietf:params:xml:ns:xmpp-stanzas");
+                account.getXmppConnection().sendIqPacket(response, null);
+            }
+        }
+    }
 
 }

src/main/java/eu/siacs/conversations/parser/MessageParser.java

@@ -22,6 +22,7 @@ import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
 import eu.siacs.conversations.entities.Account;
 import eu.siacs.conversations.entities.Contact;
 import eu.siacs.conversations.entities.Conversation;
+import eu.siacs.conversations.entities.Conversational;
 import eu.siacs.conversations.entities.Message;
 import eu.siacs.conversations.entities.MucOptions;
 import eu.siacs.conversations.entities.ReadByMarker;
@@ -126,7 +127,8 @@ public class MessageParser extends AbstractParser implements OnMessagePacketRece
                     service.reportBrokenSessionException(e, postpone);
                     return new Message(conversation, "", Message.ENCRYPTION_AXOLOTL_FAILED, status);
                 } else {
-                    Log.d(Config.LOGTAG,"ignoring broken session exception because checkForDuplicase failed");
+                    Log.d(Config.LOGTAG,"ignoring broken session exception because checkForDuplicates failed");
+                    //TODO should be still emit a failed message?
                     return null;
                 }
             } catch (NotEncryptedForThisDeviceException e) {
@@ -264,6 +266,17 @@ public class MessageParser extends AbstractParser implements OnMessagePacketRece
                         packet.getId(),
                         Message.STATUS_SEND_FAILED,
                         extractErrorMessage(packet));
+                final Element error = packet.findChild("error");
+                final boolean pingWorthyError = error != null && (error.hasChild("not-acceptable") || error.hasChild("remote-server-timeout") || error.hasChild("remote-server-not-found"));
+                if (pingWorthyError) {
+                    Conversation conversation = mXmppConnectionService.find(account,from);
+                    if (conversation != null && conversation.getMode() == Conversational.MODE_MULTI) {
+                        if (conversation.getMucOptions().online()) {
+                            Log.d(Config.LOGTAG,account.getJid().asBareJid()+": received ping worthy error for seemingly online muc at "+from);
+                            mXmppConnectionService.mucSelfPingAndRejoin(conversation);
+                        }
+                    }
+                }
             }
             return true;
         }
@@ -437,6 +450,7 @@ public class MessageParser extends AbstractParser implements OnMessagePacketRece
                     origin = from;
                 }
 
+                //TODO either or is probably fine?
                 final boolean checkedForDuplicates = serverMsgId != null && remoteMsgId != null && !conversation.possibleDuplicate(serverMsgId, remoteMsgId);
 
                 if (origin != null) {
@@ -598,7 +612,7 @@ public class MessageParser extends AbstractParser implements OnMessagePacketRece
                     } else {
                         serverMsgIdUpdated = false;
                     }
-                    Log.d(Config.LOGTAG, "skipping duplicate message with " + message.getCounterpart() + ". serverMsgIdUpdated=" + Boolean.toString(serverMsgIdUpdated));
+                    Log.d(Config.LOGTAG, "skipping duplicate message with " + message.getCounterpart() + ". serverMsgIdUpdated=" + serverMsgIdUpdated);
                     return;
                 }
             }

src/main/java/eu/siacs/conversations/persistance/FileBackend.java

@@ -341,7 +341,7 @@ public class FileBackend {
         }
     }
 
-    public static void close(Closeable stream) {
+    public static void close(final Closeable stream) {
         if (stream != null) {
             try {
                 stream.close();
@@ -350,7 +350,7 @@ public class FileBackend {
         }
     }
 
-    public static void close(Socket socket) {
+    public static void close(final Socket socket) {
         if (socket != null) {
             try {
                 socket.close();

src/main/java/eu/siacs/conversations/services/AvatarService.java

@@ -37,6 +37,7 @@ import eu.siacs.conversations.entities.Conversational;
 import eu.siacs.conversations.entities.ListItem;
 import eu.siacs.conversations.entities.Message;
 import eu.siacs.conversations.entities.MucOptions;
+import eu.siacs.conversations.entities.RawBlockable;
 import eu.siacs.conversations.http.services.MuclumbusService;
 import eu.siacs.conversations.utils.UIHelper;
 import eu.siacs.conversations.xmpp.OnAdvancedStreamFeaturesLoaded;
@@ -272,7 +273,9 @@ public class AvatarService implements OnAdvancedStreamFeaturesLoaded {
 	}
 
 	public Bitmap get(ListItem item, int size, boolean cachedOnly) {
-		if (item instanceof Contact) {
+		if (item instanceof RawBlockable) {
+			return get(item.getDisplayName(), item.getJid().toEscapedString(), size, cachedOnly);
+		} else if (item instanceof Contact) {
 			return get((Contact) item, size, cachedOnly);
 		} else if (item instanceof Bookmark) {
 			Bookmark bookmark = (Bookmark) item;

src/main/java/eu/siacs/conversations/services/XmppConnectionService.java

@@ -314,6 +314,12 @@ public class XmppConnectionService extends Service {
             }
 
             account.getRoster().clearPresences();
+            synchronized (account.inProgressConferenceJoins) {
+                account.inProgressConferenceJoins.clear();
+            }
+            synchronized (account.inProgressConferencePings) {
+                account.inProgressConferencePings.clear();
+            }
             mJingleConnectionManager.cancelInTransmission();
             mQuickConversationsService.considerSyncBackground(false);
             fetchRosterFromServer(account);
@@ -372,18 +378,37 @@ public class XmppConnectionService extends Service {
                 }
                 List<Conversation> conversations = getConversations();
                 for (Conversation conversation : conversations) {
-                    if (conversation.getAccount() == account && !account.pendingConferenceJoins.contains(conversation)) {
+                    final boolean inProgressJoin;
+                    synchronized (account.inProgressConferenceJoins) {
+                        inProgressJoin = account.inProgressConferenceJoins.contains(conversation);
+                    }
+                    final boolean pendingJoin;
+                    synchronized (account.pendingConferenceJoins) {
+                        pendingJoin = account.pendingConferenceJoins.contains(conversation);
+                    }
+                    if (conversation.getAccount() == account
+                            && !pendingJoin
+                            && !inProgressJoin) {
                         sendUnsentMessages(conversation);
                     }
                 }
-                for (Conversation conversation : account.pendingConferenceLeaves) {
+                final List<Conversation> pendingLeaves;
+                synchronized (account.pendingConferenceLeaves) {
+                    pendingLeaves = new ArrayList<>(account.pendingConferenceLeaves);
+                    account.pendingConferenceLeaves.clear();
+
+                }
+                for (Conversation conversation : pendingLeaves) {
                     leaveMuc(conversation);
                 }
-                account.pendingConferenceLeaves.clear();
-                for (Conversation conversation : account.pendingConferenceJoins) {
+                final List<Conversation> pendingJoins;
+                synchronized (account.pendingConferenceJoins) {
+                    pendingJoins = new ArrayList<>(account.pendingConferenceJoins);
+                    account.pendingConferenceJoins.clear();
+                }
+                for (Conversation conversation : pendingJoins) {
                     joinMuc(conversation);
                 }
-                account.pendingConferenceJoins.clear();
                 scheduleWakeUpCall(Config.PING_MAX_INTERVAL, account.getUuid().hashCode());
             } else if (account.getStatus() == Account.State.OFFLINE || account.getStatus() == Account.State.DISABLED) {
                 resetSendingToWaiting(account);
@@ -586,6 +611,7 @@ public class XmppConnectionService extends Service {
             toggleForegroundService(true);
         }
         String pushedAccountHash = null;
+        String pushedChannelHash = null;
         boolean interactive = false;
         if (action != null) {
             final String uuid = intent.getStringExtra("uuid");
@@ -698,6 +724,7 @@ public class XmppConnectionService extends Service {
                     break;
                 case ACTION_FCM_MESSAGE_RECEIVED:
                     pushedAccountHash = intent.getStringExtra("account");
+                    pushedChannelHash = intent.getStringExtra("channel");
                     Log.d(Config.LOGTAG, "push message arrived in service. account=" + pushedAccountHash);
                     break;
                 case Intent.ACTION_SEND:
@@ -711,13 +738,18 @@ public class XmppConnectionService extends Service {
         synchronized (this) {
             WakeLockHelper.acquire(wakeLock);
             boolean pingNow = ConnectivityManager.CONNECTIVITY_ACTION.equals(action) || (Config.POST_CONNECTIVITY_CHANGE_PING_INTERVAL > 0 && ACTION_POST_CONNECTIVITY_CHANGE.equals(action));
-            HashSet<Account> pingCandidates = new HashSet<>();
+            final HashSet<Account> pingCandidates = new HashSet<>();
+            final String androidId = PhoneHelper.getAndroidId(this);
             for (Account account : accounts) {
+                final boolean pushWasMeantForThisAccount = CryptoHelper.getAccountFingerprint(account, androidId).equals(pushedAccountHash);
                 pingNow |= processAccountState(account,
                         interactive,
                         "ui".equals(action),
-                        CryptoHelper.getAccountFingerprint(account, PhoneHelper.getAndroidId(this)).equals(pushedAccountHash),
+                        pushWasMeantForThisAccount,
                         pingCandidates);
+                if (pushWasMeantForThisAccount && pushedChannelHash != null) {
+                    checkMucStillJoined(account, pushedAccountHash, androidId);
+                }
             }
             if (pingNow) {
                 for (Account account : pingCandidates) {
@@ -810,6 +842,20 @@ public class XmppConnectionService extends Service {
         return pingNow;
     }
 
+    private void checkMucStillJoined(final Account account, final String hash, final String androidId) {
+        for(final Conversation conversation : this.conversations) {
+            if (conversation.getAccount() == account && conversation.getMode() == Conversational.MODE_MULTI) {
+                Jid jid = conversation.getJid().asBareJid();
+                final String currentHash = CryptoHelper.getFingerprint(jid, androidId);
+                if (currentHash.equals(hash)) {
+                    Log.d(Config.LOGTAG,account.getJid().asBareJid()+": received cloud push notification for MUC "+jid);
+                    return;
+                }
+            }
+        }
+        mPushManagementService.unregisterChannel(account, hash);
+    }
+
     public void reinitializeMuclumbusService() {
         mChannelDiscoveryService.initializeMuclumbusService();
     }
@@ -848,7 +894,7 @@ public class XmppConnectionService extends Service {
                 }
 
                 @Override
-                public void userInputRequried(PendingIntent pi, Message object) {
+                public void userInputRequired(PendingIntent pi, Message object) {
 
                 }
             });
@@ -1347,7 +1393,12 @@ public class XmppConnectionService extends Service {
             }
         }
 
-        if (account.isOnlineAndConnected()) {
+        final boolean inProgressJoin;
+        synchronized (account.inProgressConferenceJoins) {
+            inProgressJoin = conversation.getMode() == Conversational.MODE_MULTI && account.inProgressConferenceJoins.contains(conversation);
+        }
+
+        if (account.isOnlineAndConnected() && !inProgressJoin) {
             switch (message.getEncryption()) {
                 case Message.ENCRYPTION_NONE:
                     if (message.needsUploading()) {
@@ -1995,6 +2046,10 @@ public class XmppConnectionService extends Service {
 						}
 					}
 				}
+                if (conversation.getMucOptions().push()) {
+                    disableDirectMucPush(conversation);
+                    mPushManagementService.disablePushOnServer(conversation);
+                }
 				leaveMuc(conversation);
 			} else {
 				if (conversation.getContact().getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
@@ -2432,21 +2487,37 @@ public class XmppConnectionService extends Service {
 	}
 
 	public void mucSelfPingAndRejoin(final Conversation conversation) {
+	    final Account account = conversation.getAccount();
+	    synchronized (account.inProgressConferenceJoins) {
+            if (account.inProgressConferenceJoins.contains(conversation)) {
+                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": canceling muc self ping because join is already under way");
+                return;
+            }
+        }
+        synchronized (account.inProgressConferencePings) {
+	        if (!account.inProgressConferencePings.add(conversation)) {
+	            Log.d(Config.LOGTAG, account.getJid().asBareJid()+": canceling muc self ping because ping is already under way");
+	            return;
+            }
+        }
 	    final Jid self = conversation.getMucOptions().getSelf().getFullJid();
 	    final IqPacket ping = new IqPacket(IqPacket.TYPE.GET);
 	    ping.setTo(self);
 	    ping.addChild("ping", Namespace.PING);
-	    sendIqPacket(conversation.getAccount(), ping, (account, response) -> {
+	    sendIqPacket(conversation.getAccount(), ping, (a, response) -> {
 	        if (response.getType() == IqPacket.TYPE.ERROR) {
 	            Element error = response.findChild("error");
 	            if (error == null || error.hasChild("service-unavailable") || error.hasChild("feature-not-implemented") || error.hasChild("item-not-found")) {
-	                Log.d(Config.LOGTAG,account.getJid().asBareJid()+": ping to "+self+" came back as ignorable error");
+	                Log.d(Config.LOGTAG,a.getJid().asBareJid()+": ping to "+self+" came back as ignorable error");
                 } else {
-	                Log.d(Config.LOGTAG,account.getJid().asBareJid()+": ping to "+self+" failed. attempting rejoin");
+	                Log.d(Config.LOGTAG,a.getJid().asBareJid()+": ping to "+self+" failed. attempting rejoin");
 	                joinMuc(conversation);
                 }
             } else if (response.getType() == IqPacket.TYPE.RESULT) {
-	            Log.d(Config.LOGTAG,account.getJid().asBareJid()+": ping to "+self+" came back fine");
+	            Log.d(Config.LOGTAG,a.getJid().asBareJid()+": ping to "+self+" came back fine");
+            }
+	        synchronized (account.inProgressConferencePings) {
+	            account.inProgressConferencePings.remove(conversation);
             }
         });
     }
@@ -2464,10 +2535,17 @@ public class XmppConnectionService extends Service {
 	}
 
 	private void joinMuc(Conversation conversation, final OnConferenceJoined onConferenceJoined, final boolean followedInvite) {
-		Account account = conversation.getAccount();
-		account.pendingConferenceJoins.remove(conversation);
-		account.pendingConferenceLeaves.remove(conversation);
+		final Account account = conversation.getAccount();
+		synchronized (account.pendingConferenceJoins) {
+            account.pendingConferenceJoins.remove(conversation);
+        }
+        synchronized (account.pendingConferenceLeaves) {
+            account.pendingConferenceLeaves.remove(conversation);
+        }
 		if (account.getStatus() == Account.State.ONLINE) {
+		    synchronized (account.inProgressConferenceJoins) {
+                account.inProgressConferenceJoins.add(conversation);
+            }
 			sendPresencePacket(account, mPresenceGenerator.leave(conversation.getMucOptions()));
 			conversation.resetMucOptions();
 			if (onConferenceJoined != null) {
@@ -2523,7 +2601,13 @@ public class XmppConnectionService extends Service {
 							saveConversationAsBookmark(conversation, null);
 						}
 					}
-					sendUnsentMessages(conversation);
+					if (mucOptions.push()) {
+					    enableMucPush(conversation);
+                    }
+					synchronized (account.inProgressConferenceJoins) {
+                        account.inProgressConferenceJoins.remove(conversation);
+                        sendUnsentMessages(conversation);
+                    }
 				}
 
 				@Override
@@ -2539,9 +2623,13 @@ public class XmppConnectionService extends Service {
 				public void onFetchFailed(final Conversation conversation, Element error) {
                     if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
                         Log.d(Config.LOGTAG,account.getJid().asBareJid()+": conversation ("+conversation.getJid()+") got archived before IQ result");
+
                         return;
                     }
 					if (error != null && "remote-server-not-found".equals(error.getName())) {
+					    synchronized (account.inProgressConferenceJoins) {
+                            account.inProgressConferenceJoins.remove(conversation);
+                        }
 						conversation.getMucOptions().setError(MucOptions.Error.SERVER_NOT_FOUND);
 						updateConversationUi();
 					} else {
@@ -2552,13 +2640,48 @@ public class XmppConnectionService extends Service {
 			});
 			updateConversationUi();
 		} else {
-			account.pendingConferenceJoins.add(conversation);
+		    synchronized (account.pendingConferenceJoins) {
+                account.pendingConferenceJoins.add(conversation);
+            }
 			conversation.resetMucOptions();
 			conversation.setHasMessagesLeftOnServer(false);
 			updateConversationUi();
 		}
 	}
 
+	private void enableDirectMucPush(final Conversation conversation) {
+        final Account account = conversation.getAccount();
+        final Jid room = conversation.getJid().asBareJid();
+        final IqPacket enable = mIqGenerator.enablePush(conversation.getAccount().getJid(), conversation.getUuid(), null);
+        enable.setTo(room);
+        sendIqPacket(account, enable, (a, response) -> {
+            if (response.getType() == IqPacket.TYPE.RESULT) {
+                Log.d(Config.LOGTAG,a.getJid().asBareJid()+": enabled direct push for muc "+room);
+            } else if (response.getType() == IqPacket.TYPE.ERROR) {
+                Log.d(Config.LOGTAG,a.getJid().asBareJid()+": unable to enable direct push for muc "+room+" "+response.getError());
+            }
+        });
+    }
+
+	private void enableMucPush(final Conversation conversation) {
+	    enableDirectMucPush(conversation);
+        mPushManagementService.registerPushTokenOnServer(conversation);
+    }
+
+    private void disableDirectMucPush(final Conversation conversation) {
+        final Account account = conversation.getAccount();
+        final Jid room = conversation.getJid().asBareJid();
+        final IqPacket disable = mIqGenerator.disablePush(conversation.getAccount().getJid(), conversation.getUuid());
+        disable.setTo(room);
+        sendIqPacket(account, disable, (a, response) -> {
+            if (response.getType() == IqPacket.TYPE.RESULT) {
+                Log.d(Config.LOGTAG,a.getJid().asBareJid()+": disabled direct push for muc "+room);
+            } else if (response.getType() == IqPacket.TYPE.ERROR) {
+                Log.d(Config.LOGTAG,a.getJid().asBareJid()+": unable to disable direct push for muc "+room+" "+response.getError());
+            }
+        });
+    }
+
 	private void fetchConferenceMembers(final Conversation conversation) {
 		final Account account = conversation.getAccount();
 		final AxolotlService axolotlService = account.getAxolotlService();
@@ -2734,9 +2857,13 @@ public class XmppConnectionService extends Service {
 	}
 
 	private void leaveMuc(Conversation conversation, boolean now) {
-		Account account = conversation.getAccount();
-		account.pendingConferenceJoins.remove(conversation);
-		account.pendingConferenceLeaves.remove(conversation);
+		final Account account = conversation.getAccount();
+		synchronized (account.pendingConferenceJoins) {
+            account.pendingConferenceJoins.remove(conversation);
+        }
+        synchronized (account.pendingConferenceLeaves) {
+            account.pendingConferenceLeaves.remove(conversation);
+        }
 		if (account.getStatus() == Account.State.ONLINE || now) {
 			sendPresencePacket(conversation.getAccount(), mPresenceGenerator.leave(conversation.getMucOptions()));
 			conversation.getMucOptions().setOffline();
@@ -2746,7 +2873,9 @@ public class XmppConnectionService extends Service {
 			}
 			Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": leaving muc " + conversation.getJid());
 		} else {
-			account.pendingConferenceLeaves.add(conversation);
+		    synchronized (account.pendingConferenceLeaves) {
+                account.pendingConferenceLeaves.add(conversation);
+            }
 		}
 	}
 
@@ -4007,6 +4136,7 @@ public class XmppConnectionService extends Service {
 		for (Account account : getAccounts()) {
 			if (account.isOnlineAndConnected() && mPushManagementService.available(account)) {
 				mPushManagementService.registerPushTokenOnServer(account);
+				//TODO renew mucs
 			}
 		}
 	}
@@ -4121,17 +4251,15 @@ public class XmppConnectionService extends Service {
 	public boolean sendBlockRequest(final Blockable blockable, boolean reportSpam) {
 		if (blockable != null && blockable.getBlockedJid() != null) {
 			final Jid jid = blockable.getBlockedJid();
-			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetBlockRequest(jid, reportSpam), new OnIqPacketReceived() {
-
-				@Override
-				public void onIqPacketReceived(final Account account, final IqPacket packet) {
-					if (packet.getType() == IqPacket.TYPE.RESULT) {
-						account.getBlocklist().add(jid);
-						updateBlocklistUi(OnUpdateBlocklist.Status.BLOCKED);
-					}
-				}
-			});
-			if (removeBlockedConversations(blockable.getAccount(), jid)) {
+			this.sendIqPacket(blockable.getAccount(), getIqGenerator().generateSetBlockRequest(jid, reportSpam), (a, response) -> {
+                if (response.getType() == IqPacket.TYPE.RESULT) {
+                    a.getBlocklist().add(jid);
+                    updateBlocklistUi(OnUpdateBlocklist.Status.BLOCKED);
+                }
+            });
+			if (blockable.getBlockedJid().isFullJid()) {
+			    return false;
+            } else if (removeBlockedConversations(blockable.getAccount(), jid)) {
 				updateConversationUi();
 				return true;
 			} else {

src/main/java/eu/siacs/conversations/ui/BlockContactDialog.java

@@ -28,14 +28,18 @@ public final class BlockContactDialog {
 
 		final String value;
 		@StringRes int res;
-		if (blockable.getJid().getLocal() == null || blockable.getAccount().isBlocked(Jid.ofDomain(blockable.getJid().getDomain()))) {
+		if (blockable.getJid().isFullJid()) {
+			builder.setTitle(isBlocked ? R.string.action_unblock_participant : R.string.action_block_participant);
+			value = blockable.getJid().toEscapedString();
+			res = isBlocked ? R.string.unblock_contact_text : R.string.block_contact_text;
+		} else if (blockable.getJid().getLocal() == null || blockable.getAccount().isBlocked(Jid.ofDomain(blockable.getJid().getDomain()))) {
 			builder.setTitle(isBlocked ? R.string.action_unblock_domain : R.string.action_block_domain);
 			value = Jid.ofDomain(blockable.getJid().getDomain()).toString();
 			res = isBlocked ? R.string.unblock_domain_text : R.string.block_domain_text;
 		} else {
 			int resBlockAction = blockable instanceof Conversation && ((Conversation) blockable).isWithStranger() ? R.string.block_stranger : R.string.action_block_contact;
 			builder.setTitle(isBlocked ? R.string.action_unblock_contact : resBlockAction);
-			value = blockable.getJid().asBareJid().toString();
+			value = blockable.getJid().asBareJid().toEscapedString();
 			res = isBlocked ? R.string.unblock_contact_text : R.string.block_contact_text;
 		}
 		binding.text.setText(JidDialog.style(xmppActivity, res, value));

src/main/java/eu/siacs/conversations/ui/BlocklistActivity.java

@@ -10,7 +10,10 @@ import java.util.Collections;
 
 import eu.siacs.conversations.R;
 import eu.siacs.conversations.entities.Account;
+import eu.siacs.conversations.entities.Blockable;
 import eu.siacs.conversations.entities.Contact;
+import eu.siacs.conversations.entities.ListItem;
+import eu.siacs.conversations.entities.RawBlockable;
 import eu.siacs.conversations.ui.interfaces.OnBackendConnected;
 import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
 import rocks.xmpp.addr.Jid;
@@ -23,7 +26,7 @@ public class BlocklistActivity extends AbstractSearchableListItemActivity implem
 	public void onCreate(final Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 		getListView().setOnItemLongClickListener((parent, view, position, id) -> {
-			BlockContactDialog.show(BlocklistActivity.this, (Contact) getListItems().get(position));
+			BlockContactDialog.show(BlocklistActivity.this, (Blockable) getListItems().get(position));
 			return true;
 		});
 		this.binding.fab.show();
@@ -50,9 +53,14 @@ public class BlocklistActivity extends AbstractSearchableListItemActivity implem
 		getListItems().clear();
 		if (account != null) {
 			for (final Jid jid : account.getBlocklist()) {
-				final Contact contact = account.getRoster().getContact(jid);
-				if (contact.match(this, needle) && contact.isBlocked()) {
-					getListItems().add(contact);
+				ListItem item;
+				if (jid.isFullJid()) {
+					item = new RawBlockable(account, jid);
+				} else {
+					item = account.getRoster().getContact(jid);
+				}
+				if (item.match(this, needle)) {
+					getListItems().add(item);
 				}
 			}
 			Collections.sort(getListItems());
@@ -78,8 +86,8 @@ public class BlocklistActivity extends AbstractSearchableListItemActivity implem
 		);
 
 		dialog.setOnEnterJidDialogPositiveListener((accountJid, contactJid) -> {
-			Contact contact = account.getRoster().getContact(contactJid);
-			if (xmppConnectionService.sendBlockRequest(contact, false)) {
+			Blockable blockable = new RawBlockable(account, contactJid);
+			if (xmppConnectionService.sendBlockRequest(blockable, false)) {
 				Toast.makeText(BlocklistActivity.this, R.string.corresponding_conversations_closed, Toast.LENGTH_SHORT).show();
 			}
 			return true;
@@ -101,4 +109,5 @@ public class BlocklistActivity extends AbstractSearchableListItemActivity implem
 	public void OnUpdateBlocklist(final OnUpdateBlocklist.Status status) {
 		refreshUi();
 	}
+
 }

src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java

@@ -83,7 +83,7 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
         }
 
         @Override
-        public void userInputRequried(PendingIntent pi, Conversation object) {
+        public void userInputRequired(PendingIntent pi, Conversation object) {
 
         }
     };

src/main/java/eu/siacs/conversations/ui/ConversationFragment.java

@@ -632,7 +632,7 @@ public class ConversationFragment extends XmppFragment implements EditMessage.Ke
             }
 
             @Override
-            public void userInputRequried(PendingIntent pi, Message object) {
+            public void userInputRequired(PendingIntent pi, Message object) {
 
             }
         });
@@ -666,7 +666,7 @@ public class ConversationFragment extends XmppFragment implements EditMessage.Ke
             }
 
             @Override
-            public void userInputRequried(PendingIntent pi, Message message) {
+            public void userInputRequired(PendingIntent pi, Message message) {
                 hidePrepareFileToast(prepareFileToast);
             }
         });
@@ -688,7 +688,7 @@ public class ConversationFragment extends XmppFragment implements EditMessage.Ke
                 new UiCallback<Message>() {
 
                     @Override
-                    public void userInputRequried(PendingIntent pi, Message object) {
+                    public void userInputRequired(PendingIntent pi, Message object) {
                         hidePrepareFileToast(prepareFileToast);
                     }
 
@@ -1326,7 +1326,7 @@ public class ConversationFragment extends XmppFragment implements EditMessage.Ke
                             new UiCallback<Contact>() {
 
                                 @Override
-                                public void userInputRequried(PendingIntent pi, Contact contact) {
+                                public void userInputRequired(PendingIntent pi, Contact contact) {
                                     startPendingIntent(pi, attachmentChoice);
                                 }
 
@@ -2284,7 +2284,10 @@ public class ConversationFragment extends XmppFragment implements EditMessage.Ke
             status = Presence.Status.OFFLINE;
         }
         this.binding.textSendButton.setTag(action);
-        this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
+        final Activity activity = getActivity();
+        if (activity != null) {
+            this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(activity, action, status));
+        }
     }
 
     protected void updateStatusMessages() {
@@ -2456,7 +2459,7 @@ public class ConversationFragment extends XmppFragment implements EditMessage.Ke
                         new UiCallback<Contact>() {
 
                             @Override
-                            public void userInputRequried(PendingIntent pi, Contact contact) {
+                            public void userInputRequired(PendingIntent pi, Contact contact) {
                                 startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
                             }
 
@@ -2512,7 +2515,7 @@ public class ConversationFragment extends XmppFragment implements EditMessage.Ke
                 new UiCallback<Message>() {
 
                     @Override
-                    public void userInputRequried(PendingIntent pi, Message message) {
+                    public void userInputRequired(PendingIntent pi, Message message) {
                         startPendingIntent(pi, REQUEST_SEND_MESSAGE);
                     }
 

src/main/java/eu/siacs/conversations/ui/EditAccountActivity.java

@@ -104,7 +104,7 @@ public class EditAccountActivity extends OmemoActivity implements OnAccountUpdat
     private final UiCallback<Avatar> mAvatarFetchCallback = new UiCallback<Avatar>() {
 
         @Override
-        public void userInputRequried(final PendingIntent pi, final Avatar avatar) {
+        public void userInputRequired(final PendingIntent pi, final Avatar avatar) {
             finishInitialSetup(avatar);
         }
 
@@ -917,7 +917,7 @@ public class EditAccountActivity extends OmemoActivity implements OnAccountUpdat
             }
 
             @Override
-            public void userInputRequried(PendingIntent pi, String object) {
+            public void userInputRequired(PendingIntent pi, String object) {
                 mPendingPresenceTemplate.push(template);
                 try {
                     startIntentSenderForResult(pi.getIntentSender(), REQUEST_CHANGE_STATUS, null, 0, 0, 0);

src/main/java/eu/siacs/conversations/ui/LocationActivity.java

@@ -23,8 +23,10 @@ import org.osmdroid.api.IGeoPoint;
 import org.osmdroid.api.IMapController;
 import org.osmdroid.config.Configuration;
 import org.osmdroid.config.IConfigurationProvider;
+import org.osmdroid.tileprovider.tilesource.TileSourceFactory;
 import org.osmdroid.tileprovider.tilesource.XYTileSource;
 import org.osmdroid.util.GeoPoint;
+import org.osmdroid.views.CustomZoomButtonsController;
 import org.osmdroid.views.MapView;
 import org.osmdroid.views.overlay.Overlay;
 
@@ -72,15 +74,7 @@ public abstract class LocationActivity extends ActionBarActivity implements Loca
 	protected void updateLocationMarkers() {
 		clearMarkers();
 	}
-
-	protected XYTileSource tileSource() {
-		return new XYTileSource("OpenStreetMap",
-				0, 19, 256, ".png", new String[] {
-				"https://a.tile.openstreetmap.org/",
-				"https://b.tile.openstreetmap.org/",
-				"https://c.tile.openstreetmap.org/" },"© OpenStreetMap contributors");
-	}
-
+	
 	@Override
 	protected void onCreate(final Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
@@ -103,7 +97,7 @@ public abstract class LocationActivity extends ActionBarActivity implements Loca
 
 		final IConfigurationProvider config = Configuration.getInstance();
 		config.load(ctx, getPreferences());
-		config.setUserAgentValue(BuildConfig.APPLICATION_ID + "_" + BuildConfig.VERSION_CODE);
+		config.setUserAgentValue(BuildConfig.APPLICATION_ID + "/" + BuildConfig.VERSION_CODE);
 		if (QuickConversationsService.isConversations() && getBooleanPreference("use_tor", R.bool.use_tor)) {
 			try {
 				config.setHttpProxy(HttpConnectionManager.getProxy());
@@ -111,17 +105,6 @@ public abstract class LocationActivity extends ActionBarActivity implements Loca
 				throw new RuntimeException("Unable to configure proxy");
 			}
 		}
-
-		final File f = new File(ctx.getCacheDir() + "/tiles");
-		try {
-			//noinspection ResultOfMethodCallIgnored
-			f.mkdirs();
-		} catch (final SecurityException ignored) {
-		}
-		if (f.exists() && f.isDirectory() && f.canRead() && f.canWrite()) {
-			Log.d(Config.LOGTAG, "Using tile cache at: " + f.getAbsolutePath());
-			config.setOsmdroidTileCache(f.getAbsoluteFile());
-		}
 	}
 
 	@Override
@@ -150,8 +133,8 @@ public abstract class LocationActivity extends ActionBarActivity implements Loca
 
 	protected void setupMapView(MapView mapView, final GeoPoint pos) {
 		map = mapView;
-		map.setTileSource(tileSource());
-		map.setBuiltInZoomControls(false);
+		map.setTileSource(TileSourceFactory.MAPNIK);
+		map.getZoomController().setVisibility(CustomZoomButtonsController.Visibility.NEVER);
 		map.setMultiTouchControls(true);
 		map.setTilesScaledToDpi(true);
 		mapController = map.getController();
@@ -251,7 +234,7 @@ public abstract class LocationActivity extends ActionBarActivity implements Loca
 		requestLocationUpdates();
 		updateLocationMarkers();
 		updateUi();
-		map.setTileSource(tileSource());
+		map.setTileSource(TileSourceFactory.MAPNIK);
 		map.setTilesScaledToDpi(true);
 
 		if (mapAtInitialLoc()) {

src/main/java/eu/siacs/conversations/ui/StartConversationActivity.java

@@ -174,7 +174,7 @@ public class StartConversationActivity extends XmppActivity implements XmppConne
 		}
 
 		@Override
-		public void userInputRequried(PendingIntent pi, Conversation object) {
+		public void userInputRequired(PendingIntent pi, Conversation object) {
 
 		}
 	};
@@ -1085,7 +1085,7 @@ public class StartConversationActivity extends XmppActivity implements XmppConne
 			}
 
 			@Override
-			public void userInputRequried(PendingIntent pi, Conversation object) {
+			public void userInputRequired(PendingIntent pi, Conversation object) {
 
 			}
 		});

src/main/java/eu/siacs/conversations/ui/UiCallback.java

@@ -7,5 +7,5 @@ public interface UiCallback<T> {
 
 	void error(int errorCode, T object);
 
-	void userInputRequried(PendingIntent pi, T object);
+	void userInputRequired(PendingIntent pi, T object);
 }

src/main/java/eu/siacs/conversations/ui/XmppActivity.java

@@ -137,7 +137,7 @@ public abstract class XmppActivity extends ActionBarActivity {
 		}
 
 		@Override
-		public void userInputRequried(PendingIntent pi, Conversation object) {
+		public void userInputRequired(PendingIntent pi, Conversation object) {
 
 		}
 	};
@@ -565,7 +565,7 @@ public abstract class XmppActivity extends ActionBarActivity {
 			xmppConnectionService.getPgpEngine().generateSignature(intent, account, status, new UiCallback<String>() {
 
 				@Override
-				public void userInputRequried(PendingIntent pi, String signature) {
+				public void userInputRequired(PendingIntent pi, String signature) {
 					try {
 						startIntentSenderForResult(pi.getIntentSender(), REQUEST_ANNOUNCE_PGP, null, 0, 0, 0);
 					} catch (final SendIntentException ignored) {
@@ -625,7 +625,7 @@ public abstract class XmppActivity extends ActionBarActivity {
 			}
 
 			@Override
-			public void userInputRequried(PendingIntent pi, Account object) {
+			public void userInputRequired(PendingIntent pi, Account object) {
 				try {
 					startIntentSenderForResult(pi.getIntentSender(),
 							REQUEST_CHOOSE_PGP_ID, null, 0, 0, 0);

src/main/java/eu/siacs/conversations/utils/CryptoHelper.java

@@ -246,8 +246,12 @@ public final class CryptoHelper {
         return prettifyFingerprintCert(bytesToHex(fingerprint));
     }
 
+    public static String getFingerprint(Jid jid, String androidId) {
+        return getFingerprint(jid.toEscapedString() + "\00" + androidId);
+    }
+
     public static String getAccountFingerprint(Account account, String androidId) {
-        return getFingerprint(account.getJid().asBareJid().toEscapedString() + "\00" + androidId);
+        return getFingerprint(account.getJid().asBareJid(), androidId);
     }
 
     public static String getFingerprint(String value) {

src/main/java/eu/siacs/conversations/utils/XEP0392Helper.java

@@ -7,7 +7,7 @@ import org.hsluv.HUSLColorConverter;
 
 import java.security.MessageDigest;
 
-public class XEP0392Helper {
+class XEP0392Helper {
 
     private static double angle(String nickname) {
         try {
@@ -20,7 +20,7 @@ public class XEP0392Helper {
         }
     }
 
-    public static int rgbFromNick(String name) {
+    static int rgbFromNick(String name) {
         double[] hsluv = new double[3];
         hsluv[0] = angle(name) * 360;
         hsluv[1] = 100;

src/main/java/eu/siacs/conversations/xml/Namespace.java

@@ -28,4 +28,6 @@ public final class Namespace {
 	public static final String JINGLE_TRANSPORTS_S5B = "urn:xmpp:jingle:transports:s5b:1";
 	public static final String JINGLE_TRANSPORTS_IBB = "urn:xmpp:jingle:transports:ibb:1";
 	public static final String PING = "urn:xmpp:ping";
+	public static final String PUSH = "urn:xmpp:push:0";
+	public static final String COMMANDS = "http://jabber.org/protocol/commands";
 }

src/main/java/eu/siacs/conversations/xml/XmlReader.java

@@ -6,14 +6,15 @@ import android.util.Xml;
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
 
+import java.io.Closeable;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 
 import eu.siacs.conversations.Config;
 
-public class XmlReader {
-	private XmlPullParser parser;
+public class XmlReader implements Closeable {
+	private final XmlPullParser parser;
 	private InputStream is;
 
 	public XmlReader() {
@@ -48,6 +49,11 @@ public class XmlReader {
 		}
 	}
 
+	@Override
+	public void close() {
+		this.is = null;
+	}
+
 	public Tag readTag() throws IOException {
 		try {
 			while (this.is != null && parser.next() != XmlPullParser.END_DOCUMENT) {

src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java

@@ -1439,15 +1439,8 @@ public class XmppConnection implements Runnable {
     }
 
     private void forceCloseSocket() {
-        if (socket != null) {
-            try {
-                socket.close();
-            } catch (IOException e) {
-                Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": io exception " + e.getMessage() + " during force close");
-            }
-        } else {
-            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": socket was null during force close");
-        }
+        FileBackend.close(this.socket);
+        FileBackend.close(this.tagReader);
     }
 
     public void interrupt() {
@@ -1458,7 +1451,7 @@ public class XmppConnection implements Runnable {
 
     public void disconnect(final boolean force) {
         interrupt();
-        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + Boolean.toString(force));
+        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": disconnecting force=" + force);
         if (force) {
             forceCloseSocket();
         } else {
@@ -1798,8 +1791,8 @@ public class XmppConnection implements Runnable {
         }
 
         public boolean push() {
-            return hasDiscoFeature(account.getJid().asBareJid(), "urn:xmpp:push:0")
-                    || hasDiscoFeature(Jid.of(account.getServer()), "urn:xmpp:push:0");
+            return hasDiscoFeature(account.getJid().asBareJid(), Namespace.PUSH)
+                    || hasDiscoFeature(Jid.of(account.getServer()), Namespace.PUSH);
         }
 
         public boolean rosterVersioning() {

src/main/res/values-bg/strings.xml

@@ -776,4 +776,10 @@
   <string name="open_with">Отваряне с…</string>
   <string name="set_profile_picture">Профилна снимка за Conversations</string>
   <string name="choose_account">Изберете профил</string>
+  <string name="restore_backup">Възстановяване от резервно копие</string>
+  <string name="restore">Възстановяване</string>
+  <string name="enter_password_to_restore">Въведете паролата си за профила %s, за да направите възстановяване от резервно копие.</string>
+  <string name="restore_warning">Не използвайте възможността за възстановяване от резервно копие, за да клонирате (да изпълнявате едновременно) инсталацията. Възстановяването от резервно копие е предназначено за мигриране или в случай, че сте загубили устройството си.</string>
+  <string name="unable_to_restore_backup">Не може да се направи възстановяване от резервно копие.</string>
+  <string name="unable_to_decrypt_backup">Резервното копие не може да бъде дешифрирано. Правилна ли е паролата?</string>
 </resources>

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

@@ -17,6 +17,8 @@
   <string name="action_unblock_contact">Kontakt entsperren</string>
   <string name="action_block_domain">Domain sperren</string>
   <string name="action_unblock_domain">Domain entsperren</string>
+  <string name="action_block_participant">Teilnehmer sperren</string>
+  <string name="action_unblock_participant">Teilnehmer entsperren</string>
   <string name="title_activity_manage_accounts">Konten verwalten</string>
   <string name="title_activity_settings">Einstellungen</string>
   <string name="title_activity_sharewith">Mit Unterhaltung teilen</string>

src/main/res/values-gl/strings.xml

@@ -17,6 +17,8 @@
   <string name="action_unblock_contact">Desbloquear contacto</string>
   <string name="action_block_domain">Bloquear dominio</string>
   <string name="action_unblock_domain">Desbloquear dominio</string>
+  <string name="action_block_participant">Bloquear persoa</string>
+  <string name="action_unblock_participant">Desbloquear persoa</string>
   <string name="title_activity_manage_accounts">Xestionar contas</string>
   <string name="title_activity_settings">Axustes</string>
   <string name="title_activity_sharewith">Compartir na conversa</string>

src/main/res/values-ro-rRO/strings.xml

@@ -17,6 +17,8 @@
   <string name="action_unblock_contact">Deblochează contact</string>
   <string name="action_block_domain">Blochează domeniu</string>
   <string name="action_unblock_domain">Deblochează domeniu</string>
+  <string name="action_block_participant">Blochează participant</string>
+  <string name="action_unblock_participant">Deblochează participant</string>
   <string name="title_activity_manage_accounts">Configurează conturile</string>
   <string name="title_activity_settings">Setări</string>
   <string name="title_activity_sharewith">Partajează într-o conversație</string>

src/main/res/values-ru/strings.xml

@@ -3,8 +3,10 @@
   <string name="action_settings">Настройки</string>
   <string name="action_add">Новая беседа</string>
   <string name="action_accounts">Управление аккаунтами</string>
+  <string name="action_end_conversation">Закрыть текущую беседу</string>
   <string name="action_contact_details">Сведения о контакте</string>
   <string name="action_muc_details">Подробности конференции</string>
+  <string name="channel_details">Сведения о канале</string>
   <string name="action_secure">Защищённая беседа</string>
   <string name="action_add_account">Добавить аккаунт</string>
   <string name="action_edit_contact">Редактировать контакт</string>
@@ -48,6 +50,7 @@
   <string name="share_with">Поделиться с</string>
   <string name="start_conversation">Начать беседу</string>
   <string name="invite_contact">Пригласить собеседника</string>
+  <string name="invite">Пригласить</string>
   <string name="contacts">Контакты</string>
   <string name="contact">Контакт</string>
   <string name="cancel">Отмена</string>
@@ -78,6 +81,7 @@
   <string name="clear_histor_msg">Вы хотите удалить все сообщения в этой беседе?\n\n<b>Предупреждение:</b> Данная операция не повлияет на сообщения, хранящиеся на других устройствах или серверах.</string>
   <string name="delete_file_dialog">Удалить файл</string>
   <string name="delete_file_dialog_msg">Вы уверены, что хотите удалить этот файл?\n\n<b>Предупреждение:</b> Данная операция не удалит копии этого файла, хранящиеся на других устройствах или серверах.</string>
+  <string name="also_end_conversation">Закрыть эту беседу</string>
   <string name="choose_presence">Выберите устройство</string>
   <string name="send_unencrypted_message">Нешифрованное сообщение</string>
   <string name="send_message">Сообщение</string>
@@ -158,15 +162,18 @@
   <string name="mgmt_account_disable">Временно отключить</string>
   <string name="mgmt_account_publish_avatar">Разместить аватар</string>
   <string name="mgmt_account_publish_pgp">Анонсировать OpenPGP ключ</string>
-  <string name="unpublish_pgp">Удалить открытый OpenPGP ключ</string>
+  <string name="unpublish_pgp">Удалить открытый ключ OpenPGP</string>
   <string name="unpublish_pgp_message">Вы действительно хотите удалить ваш OpenPGP публичный ключ из опубликованных?\nВаши собеседники не смогут больше отправлять вам зашифрованные OpenPGP сообщения.</string>
   <string name="openpgp_has_been_published">Открытый ключ OpenPGP был опубликован.</string>
   <string name="mgmt_account_enable">Включить аккаунт</string>
   <string name="mgmt_account_are_you_sure">Вы уверены?</string>
   <string name="mgmt_account_delete_confirm_text">Если вы удалите аккаунт, будет потеряна вся история переписки.</string>
   <string name="attach_record_voice">Запись голоса</string>
+  <string name="account_settings_jabber_id">XMPP-адрес</string>
+  <string name="block_jabber_id">Заблокировать XMPP-адрес</string>
   <string name="account_settings_example_jabber_id">username@example.com</string>
   <string name="password">Пароль</string>
+  <string name="invalid_jid">Недопустимый XMPP-адрес</string>
   <string name="error_out_of_memory">Недостаточно памяти. Изображение слишком большое</string>
   <string name="add_phone_book_text">Вы хотите добавить %s в вашу адресную книгу?</string>
   <string name="server_info_show_more">Информация о сервере</string>
@@ -201,6 +208,7 @@
   <string name="fetching_keys">Получение ключей…</string>
   <string name="done">Готово</string>
   <string name="decrypt">Расшифровать</string>
+  <string name="bookmarks">Закладки</string>
   <string name="search">Поиск</string>
   <string name="enter_contact">Добавить контакт</string>
   <string name="delete_contact">Удалить контакт</string>
@@ -213,6 +221,8 @@
   <string name="join">Присоединиться</string>
   <string name="save_as_bookmark">Сохранить закладку</string>
   <string name="delete_bookmark">Удалить закладку</string>
+  <string name="destroy_room">Уничтожить конференцию</string>
+  <string name="destroy_channel">Уничтожить канал</string>
   <string name="bookmark_already_exists">Такая закладка уже существует</string>
   <string name="action_edit_subject">Редактировать тему конференции</string>
   <string name="topic">Тема</string>
@@ -253,6 +263,7 @@
   <string name="pref_allow_message_correction_summary">Позволить контактам редактировать сообщения</string>
   <string name="pref_expert_options">Расширенные настройки</string>
   <string name="pref_expert_options_summary">Пожалуйста, будьте осторожны с данными настройками</string>
+  <string name="title_activity_about_x">О %s</string>
   <string name="title_pref_quiet_hours">Тихие часы</string>
   <string name="title_pref_quiet_hours_start_time">Начало</string>
   <string name="title_pref_quiet_hours_end_time">Окончание</string>
@@ -281,6 +292,9 @@
   <string name="send_again">Отправить ещё раз</string>
   <string name="file_url">URL файла</string>
   <string name="url_copied_to_clipboard">Ссылка скопирована в буфер обмена</string>
+  <string name="jabber_id_copied_to_clipboard">XMPP-адрес скопирован в буфер обмена</string>
+  <string name="error_message_copied_to_clipboard">Сообщение об ошибке скопировано в буфер обмена</string>
+  <string name="web_address">веб-адрес</string>
   <string name="scan_qr_code">Сканировать 2D штрихкод</string>
   <string name="show_qr_code">Показать 2D штрихкод</string>
   <string name="show_block_list">Показать чёрный список</string>
@@ -289,6 +303,14 @@
   <string name="try_again">Повторить</string>
   <string name="pref_keep_foreground_service">Оставить службу на переднем плане</string>
   <string name="pref_keep_foreground_service_summary">Не позволяет операционной системе закрыть ваше соединение</string>
+  <string name="pref_create_backup">Создать резервную копию</string>
+  <string name="pref_create_backup_summary">Файлы резервной копии будут сохранены в %s</string>
+  <string name="notification_create_backup_title">Создание резервной копии</string>
+  <string name="notification_backup_created_title">Ваша резервная копия была создана</string>
+  <string name="notification_backup_created_subtitle">Файлы резервной копии сохранены в %s</string>
+  <string name="restoring_backup">Восстановление из резервной копии</string>
+  <string name="notification_restored_backup_title">Восстановление из резервной копии выполнено</string>
+  <string name="notification_restored_backup_subtitle">Не забудьте включить аккаунт</string>
   <string name="choose_file">Выбрать файл</string>
   <string name="receiving_x_file">%1$s загружается (%2$d%% выполнено)</string>
   <string name="download_x_file">Загрузить %s</string>
@@ -311,7 +333,7 @@
   <string name="conference_creation_failed">Не удалось создать конференцию!</string>
   <string name="account_image_description">Аватар аккаунта</string>
   <string name="copy_omemo_clipboard_description">Скопировать OMEMO-отпечаток в буфер обмена</string>
-  <string name="regenerate_omemo_key">Создать заново ключ OMEMO</string>
+  <string name="regenerate_omemo_key">Создать ключ OMEMO заново</string>
   <string name="clear_other_devices">Очистить устройства</string>
   <string name="clear_other_devices_desc">Вы уверены, что хотите очистить все остальные устройства из анонса ключей OMEMO? При соединении устройств в следующий раз новые ключи анонсируются автоматически, но устройства могут не получить сообщения, посланные до этого.</string>
   <string name="error_no_keys_to_trust_server_error">Для этого контакта не существует доступных ключей.\nПопытка получения новых ключей с сервера оказалась неудачной. Возможно, что-то не так с сервером вашего собеседника.</string>
@@ -366,8 +388,8 @@
   <string name="hide_offline">Скрыть пользователей вне сети</string>
   <string name="contact_is_typing">%s печатает…</string>
   <string name="contact_has_stopped_typing">%s прекратил набор</string>
-  <string name="contacts_are_typing">%s набирает...</string>
-  <string name="contacts_have_stopped_typing">%s перестал печатать</string>
+  <string name="contacts_are_typing">%s печатают...</string>
+  <string name="contacts_have_stopped_typing">%s перестали печатать</string>
   <string name="pref_chat_states">Оповещения о наборе</string>
   <string name="pref_chat_states_summary">Позволяет вашим контактам видеть когда вы пишете им новое сообщение</string>
   <string name="send_location">Отправить местоположение</string>
@@ -395,7 +417,8 @@
   <string name="recently_used">Последнее выбранное</string>
   <string name="choose_quick_action">Выбрать быстрое действие</string>
   <string name="search_contacts">Поиск контактов</string>
-  <string name="send_private_message">Отправить частное сообщение</string>
+  <string name="search_bookmarks">Поиск закладок</string>
+  <string name="send_private_message">Отправить личное сообщение</string>
   <string name="user_has_left_conference">%1$s покинул конференцию!</string>
   <string name="username">Имя пользователя</string>
   <string name="username_hint">Имя пользователя</string>
@@ -409,8 +432,8 @@
   <string name="account_status_host_unknown">Сервер не ответственен за домен</string>
   <string name="server_info_broken">Повреждено</string>
   <string name="pref_presence_settings">Доступность</string>
-  <string name="pref_away_when_screen_off">Вышел когда экран выключен</string>
-  <string name="pref_away_when_screen_off_summary">Отмечает ваш ресурс как «вышел» когда экран выключен</string>
+  <string name="pref_away_when_screen_off">\"Отошёл\" когда экран выключен</string>
+  <string name="pref_away_when_screen_off_summary">Отмечает ваш ресурс как «отошёл» когда экран выключен</string>
   <string name="pref_dnd_on_silent_mode">\"Не беспокоить\" в беззвучном режиме</string>
   <string name="pref_dnd_on_silent_mode_summary">Помечать ресурс как \"Не беспокоить\", когда устройство в беззвучном режиме</string>
   <string name="pref_treat_vibrate_as_silent">Не доступен в режиме вибрации</string>
@@ -430,7 +453,7 @@
   <string name="certificate_chain_is_not_trusted">Цепочка сертификата не доверена</string>
   <string name="action_renew_certificate">Обновить сертификат</string>
   <string name="error_fetching_omemo_key">Ошибка при получении OMEMO ключа!</string>
-  <string name="verified_omemo_key_with_certificate">Проверен OMEMO ключ с сертификатом!</string>
+  <string name="verified_omemo_key_with_certificate">Ключ OMEMO проверен с сертификатом!</string>
   <string name="device_does_not_support_certificates">Ваше устройство не поддерживает выбор клиентских сертификатов!</string>
   <string name="pref_connection_options">Подключение</string>
   <string name="pref_use_tor">Соединение через Tor</string>
@@ -459,6 +482,8 @@
   <string name="notify_only_when_highlighted">Уведомлять только при упоминании</string>
   <string name="notify_never">Без уведомления</string>
   <string name="notify_paused">Уведомления приостановлены</string>
+  <string name="pref_picture_compression">Сжатие изображений</string>
+  <string name="pref_picture_compression_summary">Изменять размер и сжимать изображения</string>
   <string name="always">Всегда</string>
   <string name="automatically">Автоматически</string>
   <string name="battery_optimizations_enabled">Оптимизации энергопотребления разрешены</string>
@@ -475,9 +500,12 @@
   <string name="security_error_invalid_file_access">Ошибка безопасности: недействительный доступ к файлу</string>
   <string name="no_application_to_share_uri">Не найдено приложения для отправки</string>
   <string name="share_uri_with">Отправить URI…</string>
+  <string name="your_full_jid_will_be">Ваш полный XMPP-адрес будет: %s</string>
   <string name="create_account">Создать аккаунт</string>
   <string name="use_own_provider">Использовать свой провайдер</string>
   <string name="pick_your_username">Выберите имя пользователя</string>
+  <string name="pref_manually_change_presence">Управлять доступностью вручную</string>
+  <string name="pref_manually_change_presence_summary">Устанавливать свою доступность при редактировании статусного сообщения</string>
   <string name="status_message">Статусное собщение</string>
   <string name="presence_chat">Свободен для общения</string>
   <string name="presence_online">В сети</string>
@@ -491,6 +519,7 @@
   <string name="choose_participants">Выбрать участников</string>
   <string name="creating_conference">Создание конференции…</string>
   <string name="invite_again">Пригласить ещё раз</string>
+  <string name="gp_disable">Выключен</string>
   <string name="gp_short">Короткий</string>
   <string name="gp_medium">Средний</string>
   <string name="gp_long">Длинный</string>
@@ -506,7 +535,7 @@
   <string name="type_pc">Компьютер</string>
   <string name="type_phone">Телефон</string>
   <string name="type_tablet">Планшет</string>
-  <string name="type_web">Веб браузер</string>
+  <string name="type_web">Веб-браузер</string>
   <string name="type_console">Консоль</string>
   <string name="payment_required">Требуется оплата</string>
   <string name="missing_internet_permission">Доступ в интернет запрещён</string>
@@ -548,10 +577,10 @@
   <string name="pref_clean_private_storage_summary">Очистить закрытое хранилище, где хранятся файлы (Файлы можно заново скачать с сервера)</string>
   <string name="i_followed_this_link_from_a_trusted_source">Открывать ссылки из надёжного источника</string>
   <string name="verifying_omemo_keys_trusted_source">Вы потвердите OMEMO ключи %1$s после нажатия на ссылку. Это безопасно только если вы перешли по ссылке из доверенного источника, где только %2$sмог разместить эту ссылку.</string>
-  <string name="verify_omemo_keys">Проверить OMEMO ключ</string>
+  <string name="verify_omemo_keys">Проверить OMEMO-ключи</string>
   <string name="show_inactive_devices">Показывать неактивные</string>
   <string name="hide_inactive_devices">Скрыть неактивные</string>
-  <string name="distrust_omemo_key">Не доверенное устройство.</string>
+  <string name="distrust_omemo_key">Прекратить доверять устройству</string>
   <string name="distrust_omemo_key_text">Вы действительно хотите удалить устройство из доверенных?\Устройство и сообщения, полученные с этого устройства, будут помечаться как недоверенные.</string>
   <plurals name="seconds">
     <item quantity="one">%d секунда</item>
@@ -618,7 +647,10 @@
   <string name="copy_to_clipboard">Скопировать в буфер обмена</string>
   <string name="message_copied_to_clipboard">Сообщение скопировано в буфер обмена</string>
   <string name="message">Сообщение</string>
+  <string name="private_messages_are_disabled">Личные сообщения выключены</string>
   <string name="mtm_accept_cert">Принять Неизвестный Сертификат?</string>
+  <string name="pref_scroll_to_bottom">Прокручивать вниз</string>
+  <string name="pref_scroll_to_bottom_summary">Прокручивать вниз после отправки сообщения</string>
   <string name="edit_status_message_title">Редактировать статусное сообщение</string>
   <string name="edit_status_message">Редактировать статусное сообщение</string>
   <string name="disable_encryption">Отключить шифрование</string>
@@ -626,16 +658,43 @@
   <string name="disable_now">Отключить сейчас</string>
   <string name="draft">Черновик:</string>
   <string name="pref_omemo_setting">OMEMO-шифрование</string>
+  <string name="pref_omemo_setting_summary_always">OMEMO будет всегда использоваться для одиночных бесед и закрытых конференций.</string>
+  <string name="pref_omemo_setting_summary_default_on">OMEMO будет использоваться по умолчанию для новых бесед.</string>
+  <string name="pref_omemo_setting_summary_default_off">OMEMO нужно будет явно включать для новых бесед.</string>
   <string name="pref_font_size">Размер шрифта</string>
+  <string name="pref_font_size_summary">Относительный размер шрифта используемый в приложении.</string>
+  <string name="default_on">Включено по умолчанию</string>
+  <string name="default_off">Выключено по умолчанию</string>
   <string name="small">Маленький</string>
   <string name="medium">Средний</string>
   <string name="large">Большой</string>
+  <string name="not_encrypted_for_this_device">Сообщение не зашифровано для этого устройства.</string>
+  <string name="omemo_decryption_failed">Не удалось расшифровать OMEMO-сообщение.</string>
   <string name="undo">отменить</string>
   <string name="action_copy_location">Копировать местоположение</string>
   <string name="action_share_location">Поделиться местоположением</string>
   <string name="title_activity_share_location">Поделиться местоположением</string>
   <string name="title_activity_show_location">Показать местоположение</string>
   <string name="share">Поделиться</string>
+  <string name="unable_to_start_recording">Невозможно начать запись</string>
   <string name="please_wait">Пожалуйста, подождите…</string>
+  <string name="no_microphone_permission">Conversations нужен доступ к микрофону</string>
   <string name="search_messages">Поиск сообщений</string>
+  <string name="view_conversation">Посмотреть беседу</string>
+  <string name="copy_link">Копировать веб-адрес</string>
+  <string name="copy_jabber_id">Копировать XMPP-адрес</string>
+  <string name="pref_start_search">Быстрый поиск</string>
+  <string name="pref_start_search_summary">На экране \"Начать беседу\" открывать клавиатуру и ставить курсор в поле поиска</string>
+  <string name="pref_more_notification_settings">Настройки уведомлений</string>
+  <string name="view_media">Просмотр медиа</string>
+  <string name="pref_video_compression">Качество видео</string>
+  <string name="pref_video_compression_summary">Низкое качество означает меньшие файлы</string>
+  <string name="video_360p">Среднее (360p)</string>
+  <string name="video_720p">Высокое (720р)</string>
+  <string name="video_original">Оригинал (без сжатия)</string>
+  <string name="create_group_chat">Создать конференцию</string>
+  <string name="join_public_channel">Присоединиться к каналу</string>
+  <string name="create_private_group_chat">Создать закрытую конференцию</string>
+  <string name="create_public_channel">Создать публичный канал</string>
+  <string name="discover_channels">Найти каналы</string>
 </resources>

src/main/res/values/strings.xml

@@ -17,6 +17,8 @@
     <string name="action_unblock_contact">Unblock contact</string>
     <string name="action_block_domain">Block domain</string>
     <string name="action_unblock_domain">Unblock domain</string>
+    <string name="action_block_participant">Block participant</string>
+    <string name="action_unblock_participant">Unblock participant</string>
     <string name="title_activity_manage_accounts">Manage Accounts</string>
     <string name="title_activity_settings">Settings</string>
     <string name="title_activity_sharewith">Share with Conversation</string>

src/playstore/java/eu/siacs/conversations/services/PushManagementService.java

@@ -5,13 +5,16 @@ import android.util.Log;
 import com.google.android.gms.common.ConnectionResult;
 import com.google.android.gms.common.GoogleApiAvailability;
 import com.google.firebase.iid.FirebaseInstanceId;
+import com.google.firebase.iid.InstanceIdResult;
 
 import eu.siacs.conversations.Config;
 import eu.siacs.conversations.R;
 import eu.siacs.conversations.entities.Account;
+import eu.siacs.conversations.entities.Conversation;
 import eu.siacs.conversations.utils.PhoneHelper;
 import eu.siacs.conversations.xml.Element;
 import eu.siacs.conversations.xml.Namespace;
+import eu.siacs.conversations.xmpp.OnIqPacketReceived;
 import eu.siacs.conversations.xmpp.XmppConnection;
 import eu.siacs.conversations.xmpp.forms.Data;
 import eu.siacs.conversations.xmpp.stanzas.IqPacket;
@@ -19,82 +22,161 @@ import rocks.xmpp.addr.Jid;
 
 public class PushManagementService {
 
-	protected final XmppConnectionService mXmppConnectionService;
+    protected final XmppConnectionService mXmppConnectionService;
 
-	PushManagementService(XmppConnectionService service) {
-		this.mXmppConnectionService = service;
-	}
+    PushManagementService(XmppConnectionService service) {
+        this.mXmppConnectionService = service;
+    }
 
-	void registerPushTokenOnServer(final Account account) {
-		Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": has push support");
-		retrieveFcmInstanceToken(token -> {
-			final String androidId = PhoneHelper.getAndroidId(mXmppConnectionService);
-			final Jid appServer = Jid.of(mXmppConnectionService.getString(R.string.app_server));
-			IqPacket packet = mXmppConnectionService.getIqGenerator().pushTokenToAppServer(appServer, token, androidId);
-			mXmppConnectionService.sendIqPacket(account, packet, (a, p) -> {
-				Element command = p.findChild("command", "http://jabber.org/protocol/commands");
-				if (p.getType() == IqPacket.TYPE.RESULT && command != null) {
-					Element x = command.findChild("x", Namespace.DATA);
-					if (x != null) {
-						Data data = Data.parse(x);
-						try {
-							String node = data.getValue("node");
-							String secret = data.getValue("secret");
-							Jid jid = Jid.of(data.getValue("jid"));
-							if (node != null && secret != null) {
-								enablePushOnServer(a, jid, node, secret);
-							}
-						} catch (IllegalArgumentException e) {
-							e.printStackTrace();
-						}
-					}
-				} else {
-					Log.d(Config.LOGTAG, a.getJid().asBareJid() + ": invalid response from app server");
-				}
-			});
-		});
-	}
+    private static Data findResponseData(IqPacket response) {
+        final Element command = response.findChild("command", Namespace.COMMANDS);
+        final Element x = command == null ? null : command.findChild("x", Namespace.DATA);
+        return x == null ? null : Data.parse(x);
+    }
 
-	private void enablePushOnServer(final Account account, final Jid jid, final String node, final String secret) {
-		IqPacket enable = mXmppConnectionService.getIqGenerator().enablePush(jid, node, secret);
-		mXmppConnectionService.sendIqPacket(account, enable, (a, p) -> {
-			if (p.getType() == IqPacket.TYPE.RESULT) {
-				Log.d(Config.LOGTAG, a.getJid().asBareJid() + ": successfully enabled push on server");
-			} else if (p.getType() == IqPacket.TYPE.ERROR) {
-				Log.d(Config.LOGTAG, a.getJid().asBareJid() + ": enabling push on server failed");
-			}
-		});
-	}
+    private Jid getAppServer() {
+        return Jid.of(mXmppConnectionService.getString(R.string.app_server));
+    }
 
-	private void retrieveFcmInstanceToken(final OnGcmInstanceTokenRetrieved instanceTokenRetrieved) {
-		new Thread(() -> {
-			try {
-				instanceTokenRetrieved.onGcmInstanceTokenRetrieved(FirebaseInstanceId.getInstance().getToken());
-			} catch (Exception e) {
-				Log.d(Config.LOGTAG, "unable to get push token",e);
-			}
-		}).start();
+    void registerPushTokenOnServer(final Account account) {
+        Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": has push support");
+        retrieveFcmInstanceToken(token -> {
+            final String androidId = PhoneHelper.getAndroidId(mXmppConnectionService);
+            final IqPacket packet = mXmppConnectionService.getIqGenerator().pushTokenToAppServer(getAppServer(), token, androidId);
+            mXmppConnectionService.sendIqPacket(account, packet, (a, response) -> {
+                final Data data = findResponseData(response);
+                if (response.getType() == IqPacket.TYPE.RESULT && data != null) {
+                    try {
+                        String node = data.getValue("node");
+                        String secret = data.getValue("secret");
+                        Jid jid = Jid.of(data.getValue("jid"));
+                        if (node != null && secret != null) {
+                            enablePushOnServer(a, jid, node, secret);
+                        }
+                    } catch (IllegalArgumentException e) {
+                        e.printStackTrace();
+                    }
+                } else {
+                    Log.d(Config.LOGTAG, a.getJid().asBareJid() + ": invalid response from app server");
+                }
+            });
+        });
+    }
 
-	}
+    public void unregisterChannel(final Account account, final String channel) {
+        final String androidId = PhoneHelper.getAndroidId(mXmppConnectionService);
+        final Jid appServer = getAppServer();
+        final IqPacket packet = mXmppConnectionService.getIqGenerator().unregisterChannelOnAppServer(appServer, androidId, channel);
+        mXmppConnectionService.sendIqPacket(account, packet, (a, response) -> {
+            if (response.getType() == IqPacket.TYPE.RESULT) {
+                Log.d(Config.LOGTAG,a.getJid().asBareJid()+": successfully unregistered channel");
+            } else if (response.getType() == IqPacket.TYPE.ERROR) {
+                Log.d(Config.LOGTAG, a.getJid().asBareJid()+": unable to unregister channel with hash "+channel);
+            }
+        });
+    }
+
+    void registerPushTokenOnServer(final Conversation conversation) {
+        Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": room "+conversation.getJid().asBareJid()+" has push support");
+        retrieveFcmInstanceToken(token -> {
+            final Jid muc = conversation.getJid().asBareJid();
+            final String androidId = PhoneHelper.getAndroidId(mXmppConnectionService);
+            final IqPacket packet = mXmppConnectionService.getIqGenerator().pushTokenToAppServer(getAppServer(), token, androidId, muc);
+            packet.setTo(muc);
+            mXmppConnectionService.sendIqPacket(conversation.getAccount(), packet, (a, response) -> {
+                final Data data = findResponseData(response);
+                if (response.getType() == IqPacket.TYPE.RESULT && data != null) {
+                    try {
+                        final String node = data.getValue("node");
+                        final String secret = data.getValue("secret");
+                        final Jid jid = Jid.of(data.getValue("jid"));
+                        if (node != null && secret != null) {
+                            enablePushOnServer(conversation, jid, node, secret);
+                        }
+                    } catch (IllegalArgumentException e) {
+                        e.printStackTrace();
+                    }
+                } else {
+                    Log.d(Config.LOGTAG, a.getJid().asBareJid() + ": invalid response from app server");
+                }
+            });
+        });
+    }
+
+    private void enablePushOnServer(final Account account, final Jid appServer, final String node, final String secret) {
+        final IqPacket enable = mXmppConnectionService.getIqGenerator().enablePush(appServer, node, secret);
+        mXmppConnectionService.sendIqPacket(account, enable, (a, p) -> {
+            if (p.getType() == IqPacket.TYPE.RESULT) {
+                Log.d(Config.LOGTAG, a.getJid().asBareJid() + ": successfully enabled push on server");
+            } else if (p.getType() == IqPacket.TYPE.ERROR) {
+                Log.d(Config.LOGTAG, a.getJid().asBareJid() + ": enabling push on server failed");
+            }
+        });
+    }
+
+    private void enablePushOnServer(final Conversation conversation, final Jid appServer, final String node, final String secret) {
+        final Jid muc = conversation.getJid().asBareJid();
+        final IqPacket enable = mXmppConnectionService.getIqGenerator().enablePush(appServer, node, secret);
+        enable.setTo(muc);
+        mXmppConnectionService.sendIqPacket(conversation.getAccount(), enable, (a, p) -> {
+            if (p.getType() == IqPacket.TYPE.RESULT) {
+                Log.d(Config.LOGTAG, a.getJid().asBareJid() + ": successfully enabled push on " + muc);
+                if (conversation.setAttribute(Conversation.ATTRIBUTE_ALWAYS_NOTIFY, node)) {
+                    mXmppConnectionService.updateConversation(conversation);
+                }
+            } else if (p.getType() == IqPacket.TYPE.ERROR) {
+                Log.d(Config.LOGTAG, a.getJid().asBareJid() + ": enabling push on " + muc + " failed");
+            }
+        });
+    }
+
+    public void disablePushOnServer(final Conversation conversation) {
+        final Jid muc = conversation.getJid().asBareJid();
+        final String node = conversation.getAttribute(Conversation.ATTRIBUTE_PUSH_NODE);
+        if (node != null) {
+            final IqPacket disable = mXmppConnectionService.getIqGenerator().disablePush(getAppServer(), node);
+            disable.setTo(muc);
+            mXmppConnectionService.sendIqPacket(conversation.getAccount(), disable, (account, response) -> {
+                if (response.getType() == IqPacket.TYPE.ERROR) {
+                    Log.d(Config.LOGTAG,account.getJid().asBareJid()+": unable to disable push for room "+muc);
+                }
+            });
+        } else {
+            Log.d(Config.LOGTAG,conversation.getAccount().getJid().asBareJid()+": room "+muc+" has no stored node. unable to disable push");
+        }
+    }
+
+    private void retrieveFcmInstanceToken(final OnGcmInstanceTokenRetrieved instanceTokenRetrieved) {
+        FirebaseInstanceId.getInstance().getInstanceId().addOnCompleteListener(task -> {
+            if (!task.isSuccessful()) {
+                Log.d(Config.LOGTAG, "unable to get Firebase instance token", task.getException());
+            }
+            final InstanceIdResult result = task.getResult();
+            if (result != null) {
+                instanceTokenRetrieved.onGcmInstanceTokenRetrieved(result.getToken());
+            }
+        });
+
+    }
 
 
-	public boolean available(Account account) {
-		final XmppConnection connection = account.getXmppConnection();
-		return connection != null
-				&& connection.getFeatures().sm()
-				&& connection.getFeatures().push()
-				&& playServicesAvailable();
-	}
+    public boolean available(Account account) {
+        final XmppConnection connection = account.getXmppConnection();
+        return connection != null
+                && connection.getFeatures().sm()
+                && connection.getFeatures().push()
+                && playServicesAvailable();
+    }
 
-	private boolean playServicesAvailable() {
-		return GoogleApiAvailability.getInstance().isGooglePlayServicesAvailable(mXmppConnectionService) == ConnectionResult.SUCCESS;
-	}
+    private boolean playServicesAvailable() {
+        return GoogleApiAvailability.getInstance().isGooglePlayServicesAvailable(mXmppConnectionService) == ConnectionResult.SUCCESS;
+    }
 
-	public boolean isStub() {
-		return false;
-	}
+    public boolean isStub() {
+        return false;
+    }
 
-	interface OnGcmInstanceTokenRetrieved {
-		void onGcmInstanceTokenRetrieved(String token);
-	}
+    interface OnGcmInstanceTokenRetrieved {
+        void onGcmInstanceTokenRetrieved(String token);
+    }
 }

src/quicksy/java/eu/siacs/conversations/services/QuickConversationsService.java

@@ -203,7 +203,7 @@ public class QuickConversationsService extends AbstractQuickConversationsService
                     os.close();
                     connection.connect();
                     final int code = connection.getResponseCode();
-                    if (code == 200) {
+                    if (code == 200 || code == 201) {
                         account.setOption(Account.OPTION_UNVERIFIED, false);
                         account.setOption(Account.OPTION_DISABLED, false);
                         awaitingAccountStateChange = new CountDownLatch(1);

src/quicksy/java/eu/siacs/conversations/ui/util/ApiDialogHelper.java

@@ -42,6 +42,9 @@ public class ApiDialogHelper {
             case 409:
                 res = R.string.logged_in_with_another_device;
                 break;
+            case 451:
+                res = R.string.not_available_in_your_country;
+                break;
             case 500:
                 res = R.string.something_went_wrong_processing_your_request;
                 break;

src/quicksy/res/values-ar/strings.xml

@@ -6,4 +6,4 @@
     <string name="pref_broadcast_last_activity_summary">إجعل كلّ جهات إتصالك تعلم أنك تستعمل كويكسي</string>
     <string name="no_microphone_permission">كويكسي يحتاج الإتصال بالمايكروفون</string>
     <string name="set_profile_picture">صورة حساب كويكسي</string>
-</resources>
+    </resources>

src/quicksy/res/values-bg/strings.xml

@@ -19,4 +19,5 @@
     <string name="no_microphone_permission">Quicksy се нуждае от достъп до микрофона</string>
     <string name="foreground_service_channel_description">Тази категория известия се използва за показване на постоянно известие, което показва, че Quicksy работи.</string>
     <string name="set_profile_picture">Профилна снимка за Quicksy</string>
+    <string name="not_available_in_your_country">Quicksy не може да се използва във Вашата страна.</string>
 </resources>

src/quicksy/res/values-ca/strings.xml

@@ -19,4 +19,4 @@
     <string name="no_microphone_permission">Quicksy necessita accés al micròfon</string>
     <string name="foreground_service_channel_description">Aquest tipus de notificació s\'utilitza per mostrar una notificació permanent que indica que Quicksy s\'està executant.</string>
     <string name="set_profile_picture">Imatge de perfil en Quicksy</string>
-</resources>
+    </resources>

src/quicksy/res/values-de/strings.xml

@@ -19,4 +19,5 @@
     <string name="no_microphone_permission">Quicksy benötigt Zugriff auf das Mikrofon</string>
     <string name="foreground_service_channel_description">Diese Benachrichtigungsart wird verwendet, um eine permanente Benachrichtigung anzuzeigen, die anzeigt, dass Quicksy gerade ausgeführt wird.</string>
     <string name="set_profile_picture">Quicksy Profilbild</string>
+    <string name="not_available_in_your_country">Quicksy ist in deinem Land nicht verfügbar.</string>
 </resources>

src/quicksy/res/values-es/strings.xml

@@ -19,4 +19,4 @@
     <string name="no_microphone_permission">Quicksy necesita acceder al micrófono</string>
     <string name="foreground_service_channel_description">Esta categoría de notificación se usa para mostrar una notificación permantente indicando que Quicksy está ejecutándose.</string>
     <string name="set_profile_picture">Foto de perfil en Quicksy</string>
-</resources>
+    </resources>

src/quicksy/res/values-fr/strings.xml

@@ -19,4 +19,4 @@
     <string name="no_microphone_permission">Quicksy doit avoir accès au microphone</string>
     <string name="foreground_service_channel_description">Cette catégorie de notification est utilisée pour afficher une notification permanente indiquant que Quicksy est en cours d\'exécution.</string>
     <string name="set_profile_picture">Photo de profil Quicksy</string>
-</resources>
+    </resources>

src/quicksy/res/values-gl/strings.xml

@@ -19,4 +19,5 @@
     <string name="no_microphone_permission">Quicksy precisa acceder ao micrófono</string>
     <string name="foreground_service_channel_description">Esta categoría de notificacións utilízase para mostrar unha notificación permanente que indica que Quicksy está funcionando.</string>
     <string name="set_profile_picture">Imaxe de perfil Quicksy</string>
+    <string name="not_available_in_your_country">Quicksy non está dispoñible no seu país.</string>
 </resources>

src/quicksy/res/values-hu/strings.xml

@@ -19,4 +19,4 @@
     <string name="no_microphone_permission">A Quicksy-nek hozzáférésre lenne szüksége a mikrofonhoz</string>
     <string name="foreground_service_channel_description">Ez az értesítési kategória állandó értesítést jelenít meg arról, hogy a Quicksy fut.</string>
     <string name="set_profile_picture">Quicksy profilkép</string>
-</resources>
+    </resources>

src/quicksy/res/values-it/strings.xml

@@ -19,4 +19,4 @@
     <string name="no_microphone_permission">Quicksy ha bisogno di accedere al microfono</string>
     <string name="foreground_service_channel_description">Questa categoria di notifiche è usata per mostrare una notifica permanente per indicare che Quicksy è in esecuzione.</string>
     <string name="set_profile_picture">Immagine profilo di Quicksy</string>
-</resources>
+    </resources>

src/quicksy/res/values-ja/strings.xml

@@ -19,4 +19,4 @@
     <string name="no_microphone_permission">Quicksy はマイクにアクセスが必要です</string>
     <string name="foreground_service_channel_description">この通知カテゴリーは Quicksy が実行されていることを表示する、永続的な通知を表示するために使用されます。</string>
     <string name="set_profile_picture">Quicksy プロフィール写真</string>
-</resources>
+    </resources>

src/quicksy/res/values-nl/strings.xml

@@ -19,4 +19,4 @@
     <string name="no_microphone_permission">Quicksy heeft toegang nodig tot de microfoon</string>
     <string name="foreground_service_channel_description">Deze meldingscategorie wordt gebruikt om een permanente melding weer te geven dat Quicksy wordt uitgevoerd.</string>
     <string name="set_profile_picture">Quicksy-profielafbeelding</string>
-</resources>
+    </resources>

src/quicksy/res/values-pl/strings.xml

@@ -19,4 +19,4 @@
     <string name="no_microphone_permission">Quicksy potrzebuje dostępu do mikrofonu.</string>
     <string name="foreground_service_channel_description">Ta kategoria powiadomień jest używana do wyświetlania ciągłego powiadomienia o tym, że Quicksy działa.</string>
     <string name="set_profile_picture">Obrazek profilowy Quicksy</string>
-</resources>
+    </resources>

src/quicksy/res/values-pt-rBR/strings.xml

@@ -19,4 +19,4 @@
     <string name="no_microphone_permission">O Quicksy necessita de acesso ao microfone</string>
     <string name="foreground_service_channel_description">Essa categoria de notificação é utilizada para exibir uma notificação permanente indicando que o Quicksy está em execução.</string>
     <string name="set_profile_picture">Imagem de perfil do Quicksy</string>
-</resources>
+    </resources>

src/quicksy/res/values-ro-rRO/strings.xml

@@ -21,4 +21,5 @@ sau chiar pierderea mesajelor.\nÎn continuare veți fi rugați să dezactivați
     <string name="no_microphone_permission">Quicksy are nevoie de acces la microfon</string>
     <string name="foreground_service_channel_description">Această categorie de notificări este folosită pentru a arăta o notificare permanentă ce indică rularea Quicksy</string>
     <string name="set_profile_picture">Poză profil Quicksy</string>
+    <string name="not_available_in_your_country">Quicksy nu este disponibilă în țara dumneavoastră.</string>
 </resources>

src/quicksy/res/values-uk/strings.xml

@@ -19,4 +19,4 @@
     <string name="no_microphone_permission">Програма потребує доступу до мікрофона</string>
     <string name="foreground_service_channel_description">Цей вид сповіщень показує постійне сповіщення про те, що ця програма працює.</string>
     <string name="set_profile_picture">Зображення профілю для Quicksy</string>
-</resources>
+    </resources>

src/quicksy/res/values-zh-rCN/strings.xml

@@ -19,4 +19,4 @@
     <string name="no_microphone_permission">Quicksy需要麦克风权限</string>
     <string name="foreground_service_channel_description">此通知类别用于显示表明Quicksy正在运行的永久通知。</string>
     <string name="set_profile_picture">Quicksy个人资料图片</string>
-</resources>
+    </resources>

src/quicksy/res/values/strings.xml

@@ -19,4 +19,5 @@
     <string name="no_microphone_permission">Quicksy needs access to the microphone</string>
     <string name="foreground_service_channel_description">This notification category is used to display a permanent notification indicating that Quicksy is running.</string>
     <string name="set_profile_picture">Quicksy profile picture</string>
+    <string name="not_available_in_your_country">Quicksy is not available in your country.</string>
 </resources>