Add StreamFeatureProvider

so that AccountManager and the CapsExtension can be moved to
smack-extensions, where they belong.

smack-extensions/src/main/java/org/jivesoftware/smackx/caps/EntityCapsManager.java

@@ -26,7 +26,6 @@ import org.jivesoftware.smack.PacketInterceptor;
 import org.jivesoftware.smack.PacketListener;
 import org.jivesoftware.smack.XMPPConnectionRegistry;
 import org.jivesoftware.smack.XMPPException.XMPPErrorException;
-import org.jivesoftware.smack.packet.CapsExtension;
 import org.jivesoftware.smack.packet.IQ;
 import org.jivesoftware.smack.packet.Packet;
 import org.jivesoftware.smack.packet.PacketExtension;
@@ -39,6 +38,7 @@ import org.jivesoftware.smack.filter.PacketExtensionFilter;
 import org.jivesoftware.smack.util.Cache;
 import org.jivesoftware.smack.util.stringencoder.Base64;
 import org.jivesoftware.smackx.caps.cache.EntityCapsPersistentCache;
+import org.jivesoftware.smackx.caps.packet.CapsExtension;
 import org.jivesoftware.smackx.disco.NodeInformationProvider;
 import org.jivesoftware.smackx.disco.ServiceDiscoveryManager;
 import org.jivesoftware.smackx.disco.packet.DiscoverInfo;

smack-extensions/src/main/java/org/jivesoftware/smackx/caps/packet/CapsExtension.java

@@ -0,0 +1,84 @@
+/**
+ *
+ * Copyright © 2009 Jonas Ådahl, 2011-2014 Florian Schmaus
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jivesoftware.smackx.caps.packet;
+
+import org.jivesoftware.smack.packet.Packet;
+import org.jivesoftware.smack.packet.PacketExtension;
+import org.jivesoftware.smack.util.XmlStringBuilder;
+
+/**
+ * A XEP-0115 Entity Capabilities extension.
+ * <p>
+ * Note that this is currently in smack-core as it's a potential stream feature.
+ * TODO: In feature versions of Smack, it should be possible to register
+ * "providers" for stream features too, so that this class can be moved back to
+ * smack-extensions.
+ * </p>
+ */
+public class CapsExtension implements PacketExtension {
+    public static final String NAMESPACE = "http://jabber.org/protocol/caps";
+    public static final String ELEMENT = "c";
+
+    private final String node, ver, hash;
+
+    public CapsExtension(String node, String version, String hash) {
+        this.node = node;
+        this.ver = version;
+        this.hash = hash;
+    }
+
+    public String getElementName() {
+        return ELEMENT;
+    }
+
+    public String getNamespace() {
+        return NAMESPACE;
+    }
+
+    public String getNode() {
+        return node;
+    }
+
+    public String getVer() {
+        return ver;
+    }
+
+    public String getHash() {
+        return hash;
+    }
+
+    /**
+     * <pre>
+     *  <c xmlns='http://jabber.org/protocol/caps'
+     *     hash='sha-1'
+     *     node='http://code.google.com/p/exodus'
+     *     ver='QgayPKawpkPSDYmwT/WM94uAlu0='/>
+     * </pre>
+     *
+     */
+    @Override
+    public XmlStringBuilder toXML() {
+        XmlStringBuilder xml = new XmlStringBuilder(this);
+        xml.attribute("hash", hash).attribute("node", node).attribute("ver", ver);
+        xml.closeEmptyElement();
+        return xml;
+    }
+
+    public static CapsExtension from(Packet stanza) {
+        return stanza.getExtension(ELEMENT, NAMESPACE);
+    }
+}

smack-extensions/src/main/java/org/jivesoftware/smackx/caps/provider/CapsExtensionProvider.java

@@ -19,14 +19,15 @@ package org.jivesoftware.smackx.caps.provider;
 import java.io.IOException;
 
 import org.jivesoftware.smack.SmackException;
-import org.jivesoftware.smack.packet.CapsExtension;
 import org.jivesoftware.smack.packet.PacketExtension;
 import org.jivesoftware.smack.provider.PacketExtensionProvider;
+import org.jivesoftware.smack.provider.StreamFeatureProvider;
 import org.jivesoftware.smackx.caps.EntityCapsManager;
+import org.jivesoftware.smackx.caps.packet.CapsExtension;
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
 
-public class CapsExtensionProvider implements PacketExtensionProvider {
+public class CapsExtensionProvider implements PacketExtensionProvider, StreamFeatureProvider {
 
     public PacketExtension parseExtension(XmlPullParser parser) throws XmlPullParserException, IOException,
             SmackException {
@@ -55,4 +56,10 @@ public class CapsExtensionProvider implements PacketExtensionProvider {
             throw new SmackException("Caps elment with missing attributes");
         }
     }
+
+    @Override
+    public PacketExtension parseStreamFeature(XmlPullParser parser) throws XmlPullParserException,
+                    IOException, SmackException {
+        return parseExtension(parser);
+    }
 }

smack-extensions/src/main/java/org/jivesoftware/smackx/iqregister/AccountManager.java

@@ -0,0 +1,297 @@
+/**
+ *
+ * Copyright 2003-2007 Jive Software.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jivesoftware.smackx.iqregister;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.WeakHashMap;
+
+import org.jivesoftware.smack.Manager;
+import org.jivesoftware.smack.PacketCollector;
+import org.jivesoftware.smack.SmackException;
+import org.jivesoftware.smack.XMPPConnection;
+import org.jivesoftware.smack.XMPPException;
+import org.jivesoftware.smack.SmackException.NoResponseException;
+import org.jivesoftware.smack.SmackException.NotConnectedException;
+import org.jivesoftware.smack.XMPPException.XMPPErrorException;
+import org.jivesoftware.smack.filter.PacketIDFilter;
+import org.jivesoftware.smack.packet.IQ;
+import org.jivesoftware.smackx.iqregister.packet.Registration;
+import org.jxmpp.util.XmppStringUtils;
+
+/**
+ * Allows creation and management of accounts on an XMPP server.
+ *
+ * @author Matt Tucker
+ */
+public class AccountManager extends Manager {
+    private static final Map<XMPPConnection, AccountManager> INSTANCES = new WeakHashMap<XMPPConnection, AccountManager>();
+
+    /**
+     * Returns the AccountManager instance associated with a given XMPPConnection.
+     *
+     * @param connection the connection used to look for the proper ServiceDiscoveryManager.
+     * @return the AccountManager associated with a given XMPPConnection.
+     */
+    public static synchronized AccountManager getInstance(XMPPConnection connection) {
+        AccountManager accountManager = INSTANCES.get(connection);
+        if (accountManager == null) {
+            accountManager = new AccountManager(connection);
+            INSTANCES.put(connection, accountManager);
+        }
+        return accountManager;
+    }
+
+    private Registration info = null;
+
+    /**
+     * Flag that indicates whether the server supports In-Band Registration.
+     * In-Band Registration may be advertised as a stream feature. If no stream feature
+     * was advertised from the server then try sending an IQ packet to discover if In-Band
+     * Registration is available.
+     */
+    private boolean accountCreationSupported = false;
+
+    /**
+     * Creates a new AccountManager instance.
+     *
+     * @param connection a connection to a XMPP server.
+     */
+    private AccountManager(XMPPConnection connection) {
+        super(connection);
+    }
+
+    /**
+     * Sets whether the server supports In-Band Registration. In-Band Registration may be
+     * advertised as a stream feature. If no stream feature was advertised from the server
+     * then try sending an IQ packet to discover if In-Band Registration is available.
+     *
+     * @param accountCreationSupported true if the server supports In-Band Registration.
+     */
+    void setSupportsAccountCreation(boolean accountCreationSupported) {
+        this.accountCreationSupported = accountCreationSupported;
+    }
+
+    /**
+     * Returns true if the server supports creating new accounts. Many servers require
+     * that you not be currently authenticated when creating new accounts, so the safest
+     * behavior is to only create new accounts before having logged in to a server.
+     *
+     * @return true if the server support creating new accounts.
+     * @throws XMPPErrorException 
+     * @throws NoResponseException 
+     * @throws NotConnectedException 
+     */
+    public boolean supportsAccountCreation() throws NoResponseException, XMPPErrorException, NotConnectedException {
+        // Check if we already know that the server supports creating new accounts
+        if (accountCreationSupported) {
+            return true;
+        }
+        // No information is known yet (e.g. no stream feature was received from the server
+        // indicating that it supports creating new accounts) so send an IQ packet as a way
+        // to discover if this feature is supported
+        if (info == null) {
+            getRegistrationInfo();
+            accountCreationSupported = info.getType() != IQ.Type.error;
+        }
+        return accountCreationSupported;
+    }
+
+    /**
+     * Returns an unmodifiable collection of the names of the required account attributes.
+     * All attributes must be set when creating new accounts. The standard set of possible
+     * attributes are as follows: <ul>
+     *      <li>name -- the user's name.
+     *      <li>first -- the user's first name.
+     *      <li>last -- the user's last name.
+     *      <li>email -- the user's email address.
+     *      <li>city -- the user's city.
+     *      <li>state -- the user's state.
+     *      <li>zip -- the user's ZIP code.
+     *      <li>phone -- the user's phone number.
+     *      <li>url -- the user's website.
+     *      <li>date -- the date the registration took place.
+     *      <li>misc -- other miscellaneous information to associate with the account.
+     *      <li>text -- textual information to associate with the account.
+     *      <li>remove -- empty flag to remove account.
+     * </ul><p>
+     *
+     * Typically, servers require no attributes when creating new accounts, or just
+     * the user's email address.
+     *
+     * @return the required account attributes.
+     * @throws XMPPErrorException 
+     * @throws NoResponseException 
+     * @throws NotConnectedException 
+     */
+    public Collection<String> getAccountAttributes() throws NoResponseException, XMPPErrorException, NotConnectedException  {
+        if (info == null) {
+            getRegistrationInfo();
+        }
+        Map<String, String> attributes = info.getAttributes();
+        if (attributes != null) {
+            return Collections.unmodifiableSet(attributes.keySet());
+        } else {
+            return Collections.emptySet();
+        }
+    }
+
+    /**
+     * Returns the value of a given account attribute or <tt>null</tt> if the account
+     * attribute wasn't found.
+     *
+     * @param name the name of the account attribute to return its value.
+     * @return the value of the account attribute or <tt>null</tt> if an account
+     * attribute wasn't found for the requested name.
+     * @throws XMPPErrorException 
+     * @throws NoResponseException 
+     * @throws NotConnectedException 
+     */
+    public String getAccountAttribute(String name) throws NoResponseException, XMPPErrorException, NotConnectedException  {
+        if (info == null) {
+            getRegistrationInfo();
+        }
+        return info.getAttributes().get(name);
+    }
+
+    /**
+     * Returns the instructions for creating a new account, or <tt>null</tt> if there
+     * are no instructions. If present, instructions should be displayed to the end-user
+     * that will complete the registration process.
+     *
+     * @return the account creation instructions, or <tt>null</tt> if there are none.
+     * @throws XMPPErrorException 
+     * @throws NoResponseException 
+     * @throws NotConnectedException 
+     */
+    public String getAccountInstructions() throws NoResponseException, XMPPErrorException, NotConnectedException  {
+        if (info == null) {
+            getRegistrationInfo();
+        }
+        return info.getInstructions();
+    }
+
+    /**
+     * Creates a new account using the specified username and password. The server may
+     * require a number of extra account attributes such as an email address and phone
+     * number. In that case, Smack will attempt to automatically set all required
+     * attributes with blank values, which may or may not be accepted by the server.
+     * Therefore, it's recommended to check the required account attributes and to let
+     * the end-user populate them with real values instead.
+     *
+     * @param username the username.
+     * @param password the password.
+     * @throws XMPPErrorException 
+     * @throws NoResponseException 
+     * @throws NotConnectedException 
+     */
+    public void createAccount(String username, String password) throws NoResponseException, XMPPErrorException, NotConnectedException  {
+        // Create a map for all the required attributes, but give them blank values.
+        Map<String, String> attributes = new HashMap<String, String>();
+        for (String attributeName : getAccountAttributes()) {
+            attributes.put(attributeName, "");
+        }
+        createAccount(username, password, attributes);
+    }
+
+    /**
+     * Creates a new account using the specified username, password and account attributes.
+     * The attributes Map must contain only String name/value pairs and must also have values
+     * for all required attributes.
+     *
+     * @param username the username.
+     * @param password the password.
+     * @param attributes the account attributes.
+     * @throws XMPPErrorException if an error occurs creating the account.
+     * @throws NoResponseException if there was no response from the server.
+     * @throws NotConnectedException 
+     * @see #getAccountAttributes()
+     */
+    public void createAccount(String username, String password, Map<String, String> attributes)
+                    throws NoResponseException, XMPPErrorException, NotConnectedException {
+        attributes.put("username", username);
+        attributes.put("password", password);
+        Registration reg = new Registration(attributes);
+        reg.setType(IQ.Type.set);
+        reg.setTo(connection().getServiceName());
+        createPacketCollectorAndSend(reg).nextResultOrThrow();
+    }
+
+    /**
+     * Changes the password of the currently logged-in account. This operation can only
+     * be performed after a successful login operation has been completed. Not all servers
+     * support changing passwords; an XMPPException will be thrown when that is the case.
+     *
+     * @throws IllegalStateException if not currently logged-in to the server.
+     * @throws XMPPErrorException if an error occurs when changing the password.
+     * @throws NoResponseException if there was no response from the server.
+     * @throws NotConnectedException 
+     */
+    public void changePassword(String newPassword) throws NoResponseException, XMPPErrorException, NotConnectedException {
+        Map<String, String> map = new HashMap<String, String>();
+        map.put("username",XmppStringUtils.parseLocalpart(connection().getUser()));
+        map.put("password",newPassword);
+        Registration reg = new Registration(map);
+        reg.setType(IQ.Type.set);
+        reg.setTo(connection().getServiceName());
+        createPacketCollectorAndSend(reg).nextResultOrThrow();
+    }
+
+    /**
+     * Deletes the currently logged-in account from the server. This operation can only
+     * be performed after a successful login operation has been completed. Not all servers
+     * support deleting accounts; an XMPPException will be thrown when that is the case.
+     *
+     * @throws IllegalStateException if not currently logged-in to the server.
+     * @throws XMPPErrorException if an error occurs when deleting the account.
+     * @throws NoResponseException if there was no response from the server.
+     * @throws NotConnectedException 
+     */
+    public void deleteAccount() throws NoResponseException, XMPPErrorException, NotConnectedException {
+        Map<String, String> attributes = new HashMap<String, String>();
+        // To delete an account, we add a single attribute, "remove", that is blank.
+        attributes.put("remove", "");
+        Registration reg = new Registration(attributes);
+        reg.setType(IQ.Type.set);
+        reg.setTo(connection().getServiceName());
+        createPacketCollectorAndSend(reg).nextResultOrThrow();
+    }
+
+    /**
+     * Gets the account registration info from the server.
+     * @throws XMPPErrorException 
+     * @throws NoResponseException 
+     * @throws NotConnectedException 
+     *
+     * @throws XMPPException if an error occurs.
+     * @throws SmackException if there was no response from the server.
+     */
+    private synchronized void getRegistrationInfo() throws NoResponseException, XMPPErrorException, NotConnectedException {
+        Registration reg = new Registration();
+        reg.setTo(connection().getServiceName());
+        info = createPacketCollectorAndSend(reg).nextResultOrThrow();
+    }
+
+    private PacketCollector createPacketCollectorAndSend(IQ req) throws NotConnectedException {
+        PacketCollector collector = connection().createPacketCollector(new PacketIDFilter(req.getPacketID()));
+        connection().sendPacket(req);
+        return collector;
+    }
+}

smack-extensions/src/main/java/org/jivesoftware/smackx/iqregister/packet/Registration.java

@@ -0,0 +1,133 @@
+/**
+ *
+ * Copyright 2003-2007 Jive Software.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jivesoftware.smackx.iqregister.packet;
+
+import java.util.Map;
+
+import org.jivesoftware.smack.packet.IQ;
+import org.jivesoftware.smack.packet.PacketExtension;
+import org.jivesoftware.smack.util.XmlStringBuilder;
+
+/**
+ * Represents registration packets. An empty GET query will cause the server to return information
+ * about it's registration support. SET queries can be used to create accounts or update
+ * existing account information. XMPP servers may require a number of attributes to be set
+ * when creating a new account. The standard account attributes are as follows:
+ * <ul>
+ *      <li>name -- the user's name.
+ *      <li>first -- the user's first name.
+ *      <li>last -- the user's last name.
+ *      <li>email -- the user's email address.
+ *      <li>city -- the user's city.
+ *      <li>state -- the user's state.
+ *      <li>zip -- the user's ZIP code.
+ *      <li>phone -- the user's phone number.
+ *      <li>url -- the user's website.
+ *      <li>date -- the date the registration took place.
+ *      <li>misc -- other miscellaneous information to associate with the account.
+ *      <li>text -- textual information to associate with the account.
+ *      <li>remove -- empty flag to remove account.
+ * </ul>
+ *
+ * @author Matt Tucker
+ */
+public class Registration extends IQ {
+
+    public static final String NAMESPACE = "jabber:iq:register";
+
+    private final String instructions;
+    private final Map<String, String> attributes;
+
+    public Registration() {
+        this(null);
+    }
+
+    public Registration(Map<String, String> attributes) {
+        this(null, attributes);
+    }
+
+    public Registration(String instructions, Map<String, String> attributes) {
+        this.instructions = instructions;
+        this.attributes = attributes;
+    }
+
+    /**
+     * Returns the registration instructions, or <tt>null</tt> if no instructions
+     * have been set. If present, instructions should be displayed to the end-user
+     * that will complete the registration process.
+     *
+     * @return the registration instructions, or <tt>null</tt> if there are none.
+     */
+    public String getInstructions() {
+        return instructions;
+    }
+
+    /**
+     * Returns the map of String key/value pairs of account attributes.
+     *
+     * @return the account attributes.
+     */
+    public Map<String, String> getAttributes() {
+        return attributes;
+    }
+
+    @Override
+    public XmlStringBuilder getChildElementXML() {
+        XmlStringBuilder xml = new XmlStringBuilder();
+        xml.halfOpenElement(QUERY_ELEMENT);
+        xml.xmlnsAttribute(NAMESPACE);
+        xml.rightAngleBracket();
+        xml.optElement("instructions", instructions);
+        if (attributes != null && attributes.size() > 0) {
+            for (String name : attributes.keySet()) {
+                String value = attributes.get(name);
+                xml.element(name, value);
+            }
+        }
+        // Add packet extensions, if any are defined.
+        xml.append(getExtensionsXML());
+        xml.closeElement(QUERY_ELEMENT);
+        return xml;
+    }
+
+    public static class Feature implements PacketExtension {
+
+        public static final String ELEMENT = "register";
+        public static final String NAMESPACE = "http://jabber.org/features/iq-register";
+        public static final Feature INSTANCE = new Registration.Feature();
+
+        private Feature() {
+        }
+
+        @Override
+        public String getElementName() {
+            return ELEMENT;
+        }
+
+        @Override
+        public CharSequence toXML() {
+            return '<' + ELEMENT + " xmlns='" + NAMESPACE + "'/>";
+        }
+
+        @Override
+        public String getNamespace() {
+            return NAMESPACE;
+        }
+
+    }
+}

smack-extensions/src/main/java/org/jivesoftware/smackx/iqregister/provider/RegistrationProvider.java

@@ -0,0 +1,77 @@
+/**
+ *
+ * Copyright 2003-2007 Jive Software.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jivesoftware.smackx.iqregister.provider;
+
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+import org.jivesoftware.smack.packet.IQ;
+import org.jivesoftware.smack.packet.PacketExtension;
+import org.jivesoftware.smack.provider.IQProvider;
+import org.jivesoftware.smack.util.PacketParserUtils;
+import org.jivesoftware.smackx.iqregister.packet.Registration;
+import org.xmlpull.v1.XmlPullParser;
+
+public class RegistrationProvider implements IQProvider {
+
+    @Override
+    public IQ parseIQ(XmlPullParser parser) throws Exception {
+        String instruction = null;
+        Map<String, String> fields = new HashMap<String, String>();
+        List<PacketExtension> packetExtensions = new LinkedList<PacketExtension>();
+        outerloop:
+        while (true) {
+            int eventType = parser.next();
+            if (eventType == XmlPullParser.START_TAG) {
+                // Any element that's in the jabber:iq:register namespace,
+                // attempt to parse it if it's in the form <name>value</name>.
+                if (parser.getNamespace().equals(Registration.NAMESPACE)) {
+                    String name = parser.getName();
+                    String value = "";
+
+                    if (parser.next() == XmlPullParser.TEXT) {
+                        value = parser.getText();
+                    }
+                    // Ignore instructions, but anything else should be added to the map.
+                    if (!name.equals("instructions")) {
+                        fields.put(name, value);
+                    }
+                    else {
+                        instruction = value;
+                    }
+                }
+                // Otherwise, it must be a packet extension.
+                else {
+                    packetExtensions.add(PacketParserUtils.parsePacketExtension(
+                                    parser.getName(), parser.getNamespace(),
+                                    parser));
+                }
+            }
+            else if (eventType == XmlPullParser.END_TAG) {
+                if (parser.getName().equals(IQ.QUERY_ELEMENT)) {
+                    break outerloop;
+                }
+            }
+        }
+        Registration registration = new Registration(instruction, fields);
+        registration.addExtensions(packetExtensions);
+        return registration;
+	}
+
+}

smack-extensions/src/main/java/org/jivesoftware/smackx/iqregister/provider/RegistrationStreamFeatureProvider.java

@@ -0,0 +1,31 @@
+/**
+ *
+ * Copyright © 2014 Florian Schmaus
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jivesoftware.smackx.iqregister.provider;
+
+import org.jivesoftware.smack.packet.PacketExtension;
+import org.jivesoftware.smack.provider.StreamFeatureProvider;
+import org.jivesoftware.smackx.iqregister.packet.Registration;
+import org.xmlpull.v1.XmlPullParser;
+
+public class RegistrationStreamFeatureProvider implements StreamFeatureProvider {
+
+    @Override
+    public PacketExtension parseStreamFeature(XmlPullParser parser) {
+        return Registration.Feature.INSTANCE;
+    }
+
+}

smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java

@@ -59,12 +59,12 @@ import org.jivesoftware.smack.packet.Message;
 import org.jivesoftware.smack.packet.Packet;
 import org.jivesoftware.smack.packet.PacketExtension;
 import org.jivesoftware.smack.packet.Presence;
-import org.jivesoftware.smack.packet.Registration;
 import org.jivesoftware.smack.util.StringUtils;
 import org.jivesoftware.smackx.disco.NodeInformationProvider;
 import org.jivesoftware.smackx.disco.ServiceDiscoveryManager;
 import org.jivesoftware.smackx.disco.packet.DiscoverInfo;
 import org.jivesoftware.smackx.disco.packet.DiscoverItems;
+import org.jivesoftware.smackx.iqregister.packet.Registration;
 import org.jivesoftware.smackx.muc.packet.Destroy;
 import org.jivesoftware.smackx.muc.packet.MUCAdmin;
 import org.jivesoftware.smackx.muc.packet.MUCInitialPresence;

smack-extensions/src/main/resources/org.jivesoftware.smackx/extensions.providers

@@ -421,6 +421,12 @@
         <className>org.jivesoftware.smackx.caps.provider.CapsExtensionProvider</className>
     </extensionProvider>
 
+    <streamFeatureProvider>
+        <elementName>c</elementName>
+        <namespace>http://jabber.org/protocol/caps</namespace>
+        <className>org.jivesoftware.smackx.caps.provider.CapsExtensionProvider</className>
+    </streamFeatureProvider>
+
    	<!-- XEP-0297 Stanza Forwarding -->
  	<extensionProvider>
  	 	<elementName>forwarded</elementName>
@@ -455,4 +461,17 @@
         <namespace>http://www.jivesoftware.com/xmlns/xmpp/properties</namespace>
         <className>org.jivesoftware.smackx.jiveproperties.provider.JivePropertiesExtensionProvider</className>
     </extensionProvider>
+
+    <!-- XEP-0077: In-Band Registration -->
+    <iqProvider>
+        <elementName>query</elementName>
+        <namespace>jabber:iq:register</namespace>
+        <className>org.jivesoftware.smackx.iqregister.provider.RegistrationProvider</className>
+    </iqProvider>
+
+    <streamFeatureProvider>
+        <elementName>register</elementName>
+        <namespace>http://jabber.org/features/iq-register</namespace>
+        <className>org.jivesoftware.smackx.iqregister.provider.RegistrationStreamFeatureProvider</className>
+    </streamFeatureProvider>
 </smackProviders>