OF-1198: Don't respond to responses of MUC non-occupants.

src/java/org/jivesoftware/openfire/muc/spi/LocalMUCUser.java

@@ -20,43 +20,20 @@
 
 package org.jivesoftware.openfire.muc.spi;
 
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
-
 import org.dom4j.Element;
-import org.dom4j.QName;
 import org.jivesoftware.openfire.PacketException;
 import org.jivesoftware.openfire.PacketRouter;
 import org.jivesoftware.openfire.auth.UnauthorizedException;
-import org.jivesoftware.openfire.muc.CannotBeInvitedException;
-import org.jivesoftware.openfire.muc.ConflictException;
-import org.jivesoftware.openfire.muc.ForbiddenException;
-import org.jivesoftware.openfire.muc.HistoryRequest;
-import org.jivesoftware.openfire.muc.MUCRole;
-import org.jivesoftware.openfire.muc.MUCRoom;
-import org.jivesoftware.openfire.muc.MUCUser;
-import org.jivesoftware.openfire.muc.MultiUserChatService;
-import org.jivesoftware.openfire.muc.NotAcceptableException;
-import org.jivesoftware.openfire.muc.NotAllowedException;
-import org.jivesoftware.openfire.muc.RegistrationRequiredException;
-import org.jivesoftware.openfire.muc.RoomLockedException;
-import org.jivesoftware.openfire.muc.ServiceUnavailableException;
+import org.jivesoftware.openfire.muc.*;
 import org.jivesoftware.openfire.user.UserAlreadyExistsException;
 import org.jivesoftware.util.LocaleUtils;
 import org.jivesoftware.util.NotFoundException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-import org.xmpp.packet.IQ;
-import org.xmpp.packet.JID;
-import org.xmpp.packet.Message;
-import org.xmpp.packet.Packet;
-import org.xmpp.packet.PacketError;
-import org.xmpp.packet.Presence;
+import org.xmpp.packet.*;
+
+import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
 
 /**
  * Representation of users interacting with the chat service. A user
@@ -384,10 +361,14 @@ public class LocalMUCUser implements MUCUser {
             // Packets to a specific node/group/room
             MUCRole role = roles.get(group);
             if (role == null) {
-                // If a non-occupant sends a disco to an address of the form <room@service/nick>,
-                // a MUC service MUST return a <bad-request/> error.
-                // http://xmpp.org/extensions/xep-0045.html#disco-occupant
-                sendErrorPacket(packet, PacketError.Condition.bad_request);
+                Log.debug( "Ignoring stanza received from a non-occupant of '{}': {}", group, packet.toXML() );
+                if ( packet.isRequest() )
+                {
+                    // If a non-occupant sends a disco to an address of the form <room@service/nick>,
+                    // a MUC service MUST return a <bad-request/> error.
+                    // http://xmpp.org/extensions/xep-0045.html#disco-occupant
+                    sendErrorPacket( packet, PacketError.Condition.bad_request );
+                }
             }
             else if (IQ.Type.result == packet.getType()
                     || IQ.Type.error == packet.getType()) {