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Smack/source/org/jivesoftware/smackx/muc/MultiUserChat.java
Gaston Dombiak 3af86fd462 Added reconnection support. SMACK-172 
git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@5367 b35dd754-fafc-0310-a699-88a17e54d16e
2006-09-14 19:16:40 +00:00

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117 KiB
Java
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/**
* $RCSfile$
* $Revision$
* $Date$
*
* Copyright 2003-2004 Jive Software.
*
* All rights reserved. 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.muc;
import org.jivesoftware.smack.*;
import org.jivesoftware.smack.filter.*;
import org.jivesoftware.smack.packet.*;
import org.jivesoftware.smackx.Form;
import org.jivesoftware.smackx.NodeInformationProvider;
import org.jivesoftware.smackx.ServiceDiscoveryManager;
import org.jivesoftware.smackx.packet.*;
import java.lang.ref.WeakReference;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
/**
* A MultiUserChat is a conversation that takes place among many users in a virtual
* room. A room could have many occupants with different affiliation and roles.
* Possible affiliatons are "owner", "admin", "member", and "outcast". Possible roles
* are "moderator", "participant", and "visitor". Each role and affiliation guarantees
* different privileges (e.g. Send messages to all occupants, Kick participants and visitors,
* Grant voice, Edit member list, etc.).
*
* @author Gaston Dombiak, Larry Kirschner
*/
public class MultiUserChat {
private final static String discoNamespace = "http://jabber.org/protocol/muc";
private final static String discoNode = "http://jabber.org/protocol/muc#rooms";
private static Map<XMPPConnection, List<String>> joinedRooms =
new WeakHashMap<XMPPConnection, List<String>>();
private XMPPConnection connection;
private String room;
private String subject;
private String nickname = null;
private boolean joined = false;
private Map<String, Presence> occupantsMap = new ConcurrentHashMap<String, Presence>();
private final List<InvitationRejectionListener> invitationRejectionListeners =
new ArrayList<InvitationRejectionListener>();
private final List<SubjectUpdatedListener> subjectUpdatedListeners =
new ArrayList<SubjectUpdatedListener>();
private final List<UserStatusListener> userStatusListeners =
new ArrayList<UserStatusListener>();
private final List<ParticipantStatusListener> participantStatusListeners =
new ArrayList<ParticipantStatusListener>();
private PacketFilter presenceFilter;
private List<PacketInterceptor> presenceInterceptors = new ArrayList<PacketInterceptor>();
private PacketFilter messageFilter;
private RoomListenerMultiplexor roomListenerMultiplexor;
private ConnectionDetachedPacketCollector messageCollector;
private List<PacketListener> connectionListeners = new ArrayList<PacketListener>();
static {
XMPPConnection.addConnectionListener(new ConnectionEstablishedListener() {
public void connectionEstablished(final XMPPConnection connection) {
// Set on every established connection that this client supports the Multi-User
// Chat protocol. This information will be used when another client tries to
// discover whether this client supports MUC or not.
ServiceDiscoveryManager.getInstanceFor(connection).addFeature(discoNamespace);
// Set the NodeInformationProvider that will provide information about the
// joined rooms whenever a disco request is received
ServiceDiscoveryManager.getInstanceFor(connection).setNodeInformationProvider(
discoNode,
new NodeInformationProvider() {
public Iterator<DiscoverItems.Item> getNodeItems() {
List<DiscoverItems.Item> answer = new ArrayList<DiscoverItems.Item>();
Iterator<String> rooms=MultiUserChat.getJoinedRooms(connection);
while (rooms.hasNext()) {
answer.add(new DiscoverItems.Item(rooms.next()));
}
return answer.iterator();
}
public Iterator<String> getNodeFeatures() {
return null;
}
});
}
});
}
/**
* Creates a new multi user chat with the specified connection and room name. Note: no
* information is sent to or received from the server until you attempt to
* {@link #join(String) join} the chat room. On some server implementations,
* the room will not be created until the first person joins it.<p>
*
* Most XMPP servers use a sub-domain for the chat service (eg chat.example.com
* for the XMPP server example.com). You must ensure that the room address you're
* trying to connect to includes the proper chat sub-domain.
*
* @param connection the XMPP connection.
* @param room the name of the room in the form "roomName@service", where
* "service" is the hostname at which the multi-user chat
* service is running. Make sure to provide a valid JID.
*/
public MultiUserChat(XMPPConnection connection, String room) {
this.connection = connection;
this.room = room.toLowerCase();
init();
}
/**
* Returns true if the specified user supports the Multi-User Chat protocol.
*
* @param connection the connection to use to perform the service discovery.
* @param user the user to check. A fully qualified xmpp ID, e.g. jdoe@example.com.
* @return a boolean indicating whether the specified user supports the MUC protocol.
*/
public static boolean isServiceEnabled(XMPPConnection connection, String user) {
try {
DiscoverInfo result =
ServiceDiscoveryManager.getInstanceFor(connection).discoverInfo(user);
return result.containsFeature(discoNamespace);
}
catch (XMPPException e) {
e.printStackTrace();
return false;
}
}
/**
* Returns an Iterator on the rooms where the user has joined using a given connection.
* The Iterator will contain Strings where each String represents a room
* (e.g. room@muc.jabber.org).
*
* @param connection the connection used to join the rooms.
* @return an Iterator on the rooms where the user has joined using a given connection.
*/
private static Iterator<String> getJoinedRooms(XMPPConnection connection) {
List<String> rooms = joinedRooms.get(connection);
if (rooms != null) {
return rooms.iterator();
}
// Return an iterator on an empty collection (i.e. the user never joined a room)
return new ArrayList<String>().iterator();
}
/**
* Returns an Iterator on the rooms where the requested user has joined. The Iterator will
* contain Strings where each String represents a room (e.g. room@muc.jabber.org).
*
* @param connection the connection to use to perform the service discovery.
* @param user the user to check. A fully qualified xmpp ID, e.g. jdoe@example.com.
* @return an Iterator on the rooms where the requested user has joined.
*/
public static Iterator<String> getJoinedRooms(XMPPConnection connection, String user) {
try {
ArrayList<String> answer = new ArrayList<String>();
// Send the disco packet to the user
DiscoverItems result =
ServiceDiscoveryManager.getInstanceFor(connection).discoverItems(user, discoNode);
// Collect the entityID for each returned item
for (Iterator<DiscoverItems.Item> items=result.getItems(); items.hasNext();) {
answer.add(items.next().getEntityID());
}
return answer.iterator();
}
catch (XMPPException e) {
e.printStackTrace();
// Return an iterator on an empty collection
return new ArrayList<String>().iterator();
}
}
/**
* Returns the discovered information of a given room without actually having to join the room.
* The server will provide information only for rooms that are public.
*
* @param connection the XMPP connection to use for discovering information about the room.
* @param room the name of the room in the form "roomName@service" of which we want to discover
* its information.
* @return the discovered information of a given room without actually having to join the room.
* @throws XMPPException if an error occured while trying to discover information of a room.
*/
public static RoomInfo getRoomInfo(XMPPConnection connection, String room)
throws XMPPException {
DiscoverInfo info = ServiceDiscoveryManager.getInstanceFor(connection).discoverInfo(room);
return new RoomInfo(info);
}
/**
* Returns a collection with the XMPP addresses of the Multi-User Chat services.
*
* @param connection the XMPP connection to use for discovering Multi-User Chat services.
* @return a collection with the XMPP addresses of the Multi-User Chat services.
* @throws XMPPException if an error occured while trying to discover MUC services.
*/
public static Collection<String> getServiceNames(XMPPConnection connection) throws XMPPException {
final List<String> answer = new ArrayList<String>();
ServiceDiscoveryManager discoManager = ServiceDiscoveryManager.getInstanceFor(connection);
DiscoverItems items = discoManager.discoverItems(connection.getServiceName());
for (Iterator<DiscoverItems.Item> it = items.getItems(); it.hasNext();) {
DiscoverItems.Item item = it.next();
try {
DiscoverInfo info = discoManager.discoverInfo(item.getEntityID());
if (info.containsFeature("http://jabber.org/protocol/muc")) {
answer.add(item.getEntityID());
}
}
catch (XMPPException e) {
// Trouble finding info in some cases. This is a workaround for
// discovering info on remote servers.
}
}
return answer;
}
/**
* Returns a collection of HostedRooms where each HostedRoom has the XMPP address of the room
* and the room's name. Once discovered the rooms hosted by a chat service it is possible to
* discover more detailed room information or join the room.
*
* @param connection the XMPP connection to use for discovering hosted rooms by the MUC service.
* @param serviceName the service that is hosting the rooms to discover.
* @return a collection of HostedRooms.
* @throws XMPPException if an error occured while trying to discover the information.
*/
public static Collection<HostedRoom> getHostedRooms(XMPPConnection connection, String serviceName)
throws XMPPException {
List<HostedRoom> answer = new ArrayList<HostedRoom>();
ServiceDiscoveryManager discoManager = ServiceDiscoveryManager.getInstanceFor(connection);
DiscoverItems items = discoManager.discoverItems(serviceName);
for (Iterator<DiscoverItems.Item> it = items.getItems(); it.hasNext();) {
answer.add(new HostedRoom(it.next()));
}
return answer;
}
/**
* Returns the name of the room this MultiUserChat object represents.
*
* @return the multi user chat room name.
*/
public String getRoom() {
return room;
}
/**
* Creates the room according to some default configuration, assign the requesting user
* as the room owner, and add the owner to the room but not allow anyone else to enter
* the room (effectively "locking" the room). The requesting user will join the room
* under the specified nickname as soon as the room has been created.<p>
*
* To create an "Instant Room", that means a room with some default configuration that is
* available for immediate access, the room's owner should send an empty form after creating
* the room. {@link #sendConfigurationForm(Form)}<p>
*
* To create a "Reserved Room", that means a room manually configured by the room creator
* before anyone is allowed to enter, the room's owner should complete and send a form after
* creating the room. Once the completed configutation form is sent to the server, the server
* will unlock the room. {@link #sendConfigurationForm(Form)}
*
* @param nickname the nickname to use.
* @throws XMPPException if the room couldn't be created for some reason
* (e.g. room already exists; user already joined to an existant room or
* 405 error if the user is not allowed to create the room)
*/
public synchronized void create(String nickname) throws XMPPException {
if (nickname == null || nickname.equals("")) {
throw new IllegalArgumentException("Nickname must not be null or blank.");
}
// If we've already joined the room, leave it before joining under a new
// nickname.
if (joined) {
throw new IllegalStateException("Creation failed - User already joined the room.");
}
// We create a room by sending a presence packet to room@service/nick
// and signal support for MUC. The owner will be automatically logged into the room.
Presence joinPresence = new Presence(Presence.Type.available);
joinPresence.setTo(room + "/" + nickname);
// Indicate the the client supports MUC
joinPresence.addExtension(new MUCInitialPresence());
// Invoke presence interceptors so that extra information can be dynamically added
for (PacketInterceptor packetInterceptor : presenceInterceptors) {
packetInterceptor.interceptPacket(joinPresence);
}
// Wait for a presence packet back from the server.
PacketFilter responseFilter =
new AndFilter(
new FromMatchesFilter(room + "/" + nickname),
new PacketTypeFilter(Presence.class));
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send create & join packet.
connection.sendPacket(joinPresence);
// Wait up to a certain number of seconds for a reply.
Presence presence =
(Presence) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (presence == null) {
throw new XMPPException("No response from server.");
}
else if (presence.getError() != null) {
throw new XMPPException(presence.getError());
}
// Whether the room existed before or was created, the user has joined the room
this.nickname = nickname;
joined = true;
userHasJoined();
// Look for confirmation of room creation from the server
MUCUser mucUser = getMUCUserExtension(presence);
if (mucUser != null && mucUser.getStatus() != null) {
if ("201".equals(mucUser.getStatus().getCode())) {
// Room was created and the user has joined the room
return;
}
}
// We need to leave the room since it seems that the room already existed
leave();
throw new XMPPException("Creation failed - Missing acknowledge of room creation.");
}
/**
* Joins the chat room using the specified nickname. If already joined
* using another nickname, this method will first leave the room and then
* re-join using the new nickname. The default timeout of Smack for a reply
* from the group chat server that the join succeeded will be used. After
* joining the room, the room will decide the amount of history to send.
*
* @param nickname the nickname to use.
* @throws XMPPException if an error occurs joining the room. In particular, a
* 401 error can occur if no password was provided and one is required; or a
* 403 error can occur if the user is banned; or a
* 404 error can occur if the room does not exist or is locked; or a
* 407 error can occur if user is not on the member list; or a
* 409 error can occur if someone is already in the group chat with the same nickname.
*/
public void join(String nickname) throws XMPPException {
join(nickname, null, null, SmackConfiguration.getPacketReplyTimeout());
}
/**
* Joins the chat room using the specified nickname and password. If already joined
* using another nickname, this method will first leave the room and then
* re-join using the new nickname. The default timeout of Smack for a reply
* from the group chat server that the join succeeded will be used. After
* joining the room, the room will decide the amount of history to send.<p>
*
* A password is required when joining password protected rooms. If the room does
* not require a password there is no need to provide one.
*
* @param nickname the nickname to use.
* @param password the password to use.
* @throws XMPPException if an error occurs joining the room. In particular, a
* 401 error can occur if no password was provided and one is required; or a
* 403 error can occur if the user is banned; or a
* 404 error can occur if the room does not exist or is locked; or a
* 407 error can occur if user is not on the member list; or a
* 409 error can occur if someone is already in the group chat with the same nickname.
*/
public void join(String nickname, String password) throws XMPPException {
join(nickname, password, null, SmackConfiguration.getPacketReplyTimeout());
}
/**
* Joins the chat room using the specified nickname and password. If already joined
* using another nickname, this method will first leave the room and then
* re-join using the new nickname.<p>
*
* To control the amount of history to receive while joining a room you will need to provide
* a configured DiscussionHistory object.<p>
*
* A password is required when joining password protected rooms. If the room does
* not require a password there is no need to provide one.<p>
*
* If the room does not already exist when the user seeks to enter it, the server will
* decide to create a new room or not.
*
* @param nickname the nickname to use.
* @param password the password to use.
* @param history the amount of discussion history to receive while joining a room.
* @param timeout the amount of time to wait for a reply from the MUC service(in milleseconds).
* @throws XMPPException if an error occurs joining the room. In particular, a
* 401 error can occur if no password was provided and one is required; or a
* 403 error can occur if the user is banned; or a
* 404 error can occur if the room does not exist or is locked; or a
* 407 error can occur if user is not on the member list; or a
* 409 error can occur if someone is already in the group chat with the same nickname.
*/
public synchronized void join(
String nickname,
String password,
DiscussionHistory history,
long timeout)
throws XMPPException {
if (nickname == null || nickname.equals("")) {
throw new IllegalArgumentException("Nickname must not be null or blank.");
}
// If we've already joined the room, leave it before joining under a new
// nickname.
if (joined) {
leave();
}
// We join a room by sending a presence packet where the "to"
// field is in the form "roomName@service/nickname"
Presence joinPresence = new Presence(Presence.Type.available);
joinPresence.setTo(room + "/" + nickname);
// Indicate the the client supports MUC
MUCInitialPresence mucInitialPresence = new MUCInitialPresence();
if (password != null) {
mucInitialPresence.setPassword(password);
}
if (history != null) {
mucInitialPresence.setHistory(history.getMUCHistory());
}
joinPresence.addExtension(mucInitialPresence);
// Invoke presence interceptors so that extra information can be dynamically added
for (PacketInterceptor packetInterceptor : presenceInterceptors) {
packetInterceptor.interceptPacket(joinPresence);
}
// Wait for a presence packet back from the server.
PacketFilter responseFilter =
new AndFilter(
new FromMatchesFilter(room + "/" + nickname),
new PacketTypeFilter(Presence.class));
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send join packet.
connection.sendPacket(joinPresence);
// Wait up to a certain number of seconds for a reply.
Presence presence = (Presence) response.nextResult(timeout);
// Stop queuing results
response.cancel();
if (presence == null) {
throw new XMPPException("No response from server.");
}
else if (presence.getError() != null) {
throw new XMPPException(presence.getError());
}
this.nickname = nickname;
joined = true;
userHasJoined();
}
/**
* Returns true if currently in the multi user chat (after calling the {@link
* #join(String)} method).
*
* @return true if currently in the multi user chat room.
*/
public boolean isJoined() {
return joined;
}
/**
* Leave the chat room.
*/
public synchronized void leave() {
// If not joined already, do nothing.
if (!joined) {
return;
}
// We leave a room by sending a presence packet where the "to"
// field is in the form "roomName@service/nickname"
Presence leavePresence = new Presence(Presence.Type.unavailable);
leavePresence.setTo(room + "/" + nickname);
// Invoke presence interceptors so that extra information can be dynamically added
for (PacketInterceptor packetInterceptor : presenceInterceptors) {
packetInterceptor.interceptPacket(leavePresence);
}
connection.sendPacket(leavePresence);
// Reset occupant information.
occupantsMap.clear();
nickname = null;
joined = false;
userHasLeft();
}
/**
* Returns the room's configuration form that the room's owner can use or <tt>null</tt> if
* no configuration is possible. The configuration form allows to set the room's language,
* enable logging, specify room's type, etc..
*
* @return the Form that contains the fields to complete together with the instrucions or
* <tt>null</tt> if no configuration is possible.
* @throws XMPPException if an error occurs asking the configuration form for the room.
*/
public Form getConfigurationForm() throws XMPPException {
MUCOwner iq = new MUCOwner();
iq.setTo(room);
iq.setType(IQ.Type.GET);
// Filter packets looking for an answer from the server.
PacketFilter responseFilter = new PacketIDFilter(iq.getPacketID());
PacketCollector response = connection.createPacketCollector(responseFilter);
// Request the configuration form to the server.
connection.sendPacket(iq);
// Wait up to a certain number of seconds for a reply.
IQ answer = (IQ) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (answer == null) {
throw new XMPPException("No response from server.");
}
else if (answer.getError() != null) {
throw new XMPPException(answer.getError());
}
return Form.getFormFrom(answer);
}
/**
* Sends the completed configuration form to the server. The room will be configured
* with the new settings defined in the form. If the form is empty then the server
* will create an instant room (will use default configuration).
*
* @param form the form with the new settings.
* @throws XMPPException if an error occurs setting the new rooms' configuration.
*/
public void sendConfigurationForm(Form form) throws XMPPException {
MUCOwner iq = new MUCOwner();
iq.setTo(room);
iq.setType(IQ.Type.SET);
iq.addExtension(form.getDataFormToSend());
// Filter packets looking for an answer from the server.
PacketFilter responseFilter = new PacketIDFilter(iq.getPacketID());
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send the completed configuration form to the server.
connection.sendPacket(iq);
// Wait up to a certain number of seconds for a reply.
IQ answer = (IQ) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (answer == null) {
throw new XMPPException("No response from server.");
}
else if (answer.getError() != null) {
throw new XMPPException(answer.getError());
}
}
/**
* Returns the room's registration form that an unaffiliated user, can use to become a member
* of the room or <tt>null</tt> if no registration is possible. Some rooms may restrict the
* privilege to register members and allow only room admins to add new members.<p>
*
* If the user requesting registration requirements is not allowed to register with the room
* (e.g. because that privilege has been restricted), the room will return a "Not Allowed"
* error to the user (error code 405).
*
* @return the registration Form that contains the fields to complete together with the
* instrucions or <tt>null</tt> if no registration is possible.
* @throws XMPPException if an error occurs asking the registration form for the room or a
* 405 error if the user is not allowed to register with the room.
*/
public Form getRegistrationForm() throws XMPPException {
Registration reg = new Registration();
reg.setType(IQ.Type.GET);
reg.setTo(room);
PacketFilter filter =
new AndFilter(new PacketIDFilter(reg.getPacketID()), new PacketTypeFilter(IQ.class));
PacketCollector collector = connection.createPacketCollector(filter);
connection.sendPacket(reg);
IQ result = (IQ) collector.nextResult(SmackConfiguration.getPacketReplyTimeout());
collector.cancel();
if (result == null) {
throw new XMPPException("No response from server.");
}
else if (result.getType() == IQ.Type.ERROR) {
throw new XMPPException(result.getError());
}
return Form.getFormFrom(result);
}
/**
* Sends the completed registration form to the server. After the user successfully submits
* the form, the room may queue the request for review by the room admins or may immediately
* add the user to the member list by changing the user's affiliation from "none" to "member.<p>
*
* If the desired room nickname is already reserved for that room, the room will return a
* "Conflict" error to the user (error code 409). If the room does not support registration,
* it will return a "Service Unavailable" error to the user (error code 503).
*
* @param form the completed registration form.
* @throws XMPPException if an error occurs submitting the registration form. In particular, a
* 409 error can occur if the desired room nickname is already reserved for that room;
* or a 503 error can occur if the room does not support registration.
*/
public void sendRegistrationForm(Form form) throws XMPPException {
Registration reg = new Registration();
reg.setType(IQ.Type.SET);
reg.setTo(room);
reg.addExtension(form.getDataFormToSend());
PacketFilter filter =
new AndFilter(new PacketIDFilter(reg.getPacketID()), new PacketTypeFilter(IQ.class));
PacketCollector collector = connection.createPacketCollector(filter);
connection.sendPacket(reg);
IQ result = (IQ) collector.nextResult(SmackConfiguration.getPacketReplyTimeout());
collector.cancel();
if (result == null) {
throw new XMPPException("No response from server.");
}
else if (result.getType() == IQ.Type.ERROR) {
throw new XMPPException(result.getError());
}
}
/**
* Sends a request to the server to destroy the room. The sender of the request
* should be the room's owner. If the sender of the destroy request is not the room's owner
* then the server will answer a "Forbidden" error (403).
*
* @param reason the reason for the room destruction.
* @param alternateJID the JID of an alternate location.
* @throws XMPPException if an error occurs while trying to destroy the room.
* An error can occur which will be wrapped by an XMPPException --
* XMPP error code 403. The error code can be used to present more
* appropiate error messages to end-users.
*/
public void destroy(String reason, String alternateJID) throws XMPPException {
MUCOwner iq = new MUCOwner();
iq.setTo(room);
iq.setType(IQ.Type.SET);
// Create the reason for the room destruction
MUCOwner.Destroy destroy = new MUCOwner.Destroy();
destroy.setReason(reason);
destroy.setJid(alternateJID);
iq.setDestroy(destroy);
// Wait for a presence packet back from the server.
PacketFilter responseFilter = new PacketIDFilter(iq.getPacketID());
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send the room destruction request.
connection.sendPacket(iq);
// Wait up to a certain number of seconds for a reply.
IQ answer = (IQ) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (answer == null) {
throw new XMPPException("No response from server.");
}
else if (answer.getError() != null) {
throw new XMPPException(answer.getError());
}
// Reset occupant information.
occupantsMap.clear();
nickname = null;
joined = false;
userHasLeft();
}
/**
* Invites another user to the room in which one is an occupant. The invitation
* will be sent to the room which in turn will forward the invitation to the invitee.<p>
*
* If the room is password-protected, the invitee will receive a password to use to join
* the room. If the room is members-only, the the invitee may be added to the member list.
*
* @param user the user to invite to the room.(e.g. hecate@shakespeare.lit)
* @param reason the reason why the user is being invited.
*/
public void invite(String user, String reason) {
invite(new Message(), user, reason);
}
/**
* Invites another user to the room in which one is an occupant using a given Message. The invitation
* will be sent to the room which in turn will forward the invitation to the invitee.<p>
*
* If the room is password-protected, the invitee will receive a password to use to join
* the room. If the room is members-only, the the invitee may be added to the member list.
*
* @param message the message to use for sending the invitation.
* @param user the user to invite to the room.(e.g. hecate@shakespeare.lit)
* @param reason the reason why the user is being invited.
*/
public void invite(Message message, String user, String reason) {
// TODO listen for 404 error code when inviter supplies a non-existent JID
message.setTo(room);
// Create the MUCUser packet that will include the invitation
MUCUser mucUser = new MUCUser();
MUCUser.Invite invite = new MUCUser.Invite();
invite.setTo(user);
invite.setReason(reason);
mucUser.setInvite(invite);
// Add the MUCUser packet that includes the invitation to the message
message.addExtension(mucUser);
connection.sendPacket(message);
}
/**
* Informs the sender of an invitation that the invitee declines the invitation. The rejection
* will be sent to the room which in turn will forward the rejection to the inviter.
*
* @param conn the connection to use for sending the rejection.
* @param room the room that sent the original invitation.
* @param inviter the inviter of the declined invitation.
* @param reason the reason why the invitee is declining the invitation.
*/
public static void decline(XMPPConnection conn, String room, String inviter, String reason) {
Message message = new Message(room);
// Create the MUCUser packet that will include the rejection
MUCUser mucUser = new MUCUser();
MUCUser.Decline decline = new MUCUser.Decline();
decline.setTo(inviter);
decline.setReason(reason);
mucUser.setDecline(decline);
// Add the MUCUser packet that includes the rejection
message.addExtension(mucUser);
conn.sendPacket(message);
}
/**
* Adds a listener to invitation notifications. The listener will be fired anytime
* an invitation is received.
*
* @param conn the connection where the listener will be applied.
* @param listener an invitation listener.
*/
public static void addInvitationListener(XMPPConnection conn, InvitationListener listener) {
InvitationsMonitor.getInvitationsMonitor(conn).addInvitationListener(listener);
}
/**
* Removes a listener to invitation notifications. The listener will be fired anytime
* an invitation is received.
*
* @param conn the connection where the listener was applied.
* @param listener an invitation listener.
*/
public static void removeInvitationListener(XMPPConnection conn, InvitationListener listener) {
InvitationsMonitor.getInvitationsMonitor(conn).removeInvitationListener(listener);
}
/**
* Adds a listener to invitation rejections notifications. The listener will be fired anytime
* an invitation is declined.
*
* @param listener an invitation rejection listener.
*/
public void addInvitationRejectionListener(InvitationRejectionListener listener) {
synchronized (invitationRejectionListeners) {
if (!invitationRejectionListeners.contains(listener)) {
invitationRejectionListeners.add(listener);
}
}
}
/**
* Removes a listener from invitation rejections notifications. The listener will be fired
* anytime an invitation is declined.
*
* @param listener an invitation rejection listener.
*/
public void removeInvitationRejectionListener(InvitationRejectionListener listener) {
synchronized (invitationRejectionListeners) {
invitationRejectionListeners.remove(listener);
}
}
/**
* Fires invitation rejection listeners.
*/
private void fireInvitationRejectionListeners(String invitee, String reason) {
InvitationRejectionListener[] listeners;
synchronized (invitationRejectionListeners) {
listeners = new InvitationRejectionListener[invitationRejectionListeners.size()];
invitationRejectionListeners.toArray(listeners);
}
for (InvitationRejectionListener listener : listeners) {
listener.invitationDeclined(invitee, reason);
}
}
/**
* Adds a listener to subject change notifications. The listener will be fired anytime
* the room's subject changes.
*
* @param listener a subject updated listener.
*/
public void addSubjectUpdatedListener(SubjectUpdatedListener listener) {
synchronized (subjectUpdatedListeners) {
if (!subjectUpdatedListeners.contains(listener)) {
subjectUpdatedListeners.add(listener);
}
}
}
/**
* Removes a listener from subject change notifications. The listener will be fired
* anytime the room's subject changes.
*
* @param listener a subject updated listener.
*/
public void removeSubjectUpdatedListener(SubjectUpdatedListener listener) {
synchronized (subjectUpdatedListeners) {
subjectUpdatedListeners.remove(listener);
}
}
/**
* Fires subject updated listeners.
*/
private void fireSubjectUpdatedListeners(String subject, String from) {
SubjectUpdatedListener[] listeners;
synchronized (subjectUpdatedListeners) {
listeners = new SubjectUpdatedListener[subjectUpdatedListeners.size()];
subjectUpdatedListeners.toArray(listeners);
}
for (SubjectUpdatedListener listener : listeners) {
listener.subjectUpdated(subject, from);
}
}
/**
* Adds a new {@link PacketInterceptor} that will be invoked every time a new presence
* is going to be sent by this MultiUserChat to the server. Packet interceptors may
* add new extensions to the presence that is going to be sent to the MUC service.
*
* @param presenceInterceptor the new packet interceptor that will intercept presence packets.
*/
public void addPresenceInterceptor(PacketInterceptor presenceInterceptor) {
presenceInterceptors.add(presenceInterceptor);
}
/**
* Removes a {@link PacketInterceptor} that was being invoked every time a new presence
* was being sent by this MultiUserChat to the server. Packet interceptors may
* add new extensions to the presence that is going to be sent to the MUC service.
*
* @param presenceInterceptor the packet interceptor to remove.
*/
public void removePresenceInterceptor(PacketInterceptor presenceInterceptor) {
presenceInterceptors.remove(presenceInterceptor);
}
/**
* Returns the last known room's subject or <tt>null</tt> if the user hasn't joined the room
* or the room does not have a subject yet. In case the room has a subject, as soon as the
* user joins the room a message with the current room's subject will be received.<p>
*
* To be notified every time the room's subject change you should add a listener
* to this room. {@link #addSubjectUpdatedListener(SubjectUpdatedListener)}<p>
*
* To change the room's subject use {@link #changeSubject(String)}.
*
* @return the room's subject or <tt>null</tt> if the user hasn't joined the room or the
* room does not have a subject yet.
*/
public String getSubject() {
return subject;
}
/**
* Returns the reserved room nickname for the user in the room. A user may have a reserved
* nickname, for example through explicit room registration or database integration. In such
* cases it may be desirable for the user to discover the reserved nickname before attempting
* to enter the room.
*
* @return the reserved room nickname or <tt>null</tt> if none.
*/
public String getReservedNickname() {
try {
DiscoverInfo result =
ServiceDiscoveryManager.getInstanceFor(connection).discoverInfo(
room,
"x-roomuser-item");
// Look for an Identity that holds the reserved nickname and return its name
for (Iterator<DiscoverInfo.Identity> identities = result.getIdentities();
identities.hasNext();) {
DiscoverInfo.Identity identity = identities.next();
return identity.getName();
}
// If no Identity was found then the user does not have a reserved room nickname
return null;
}
catch (XMPPException e) {
e.printStackTrace();
return null;
}
}
/**
* Returns the nickname that was used to join the room, or <tt>null</tt> if not
* currently joined.
*
* @return the nickname currently being used.
*/
public String getNickname() {
return nickname;
}
/**
* Changes the occupant's nickname to a new nickname within the room. Each room occupant
* will receive two presence packets. One of type "unavailable" for the old nickname and one
* indicating availability for the new nickname. The unavailable presence will contain the new
* nickname and an appropriate status code (namely 303) as extended presence information. The
* status code 303 indicates that the occupant is changing his/her nickname.
*
* @param nickname the new nickname within the room.
* @throws XMPPException if the new nickname is already in use by another occupant.
*/
public void changeNickname(String nickname) throws XMPPException {
if (nickname == null || nickname.equals("")) {
throw new IllegalArgumentException("Nickname must not be null or blank.");
}
// Check that we already have joined the room before attempting to change the
// nickname.
if (!joined) {
throw new IllegalStateException("Must be logged into the room to change nickname.");
}
// We change the nickname by sending a presence packet where the "to"
// field is in the form "roomName@service/nickname"
// We don't have to signal the MUC support again
Presence joinPresence = new Presence(Presence.Type.available);
joinPresence.setTo(room + "/" + nickname);
// Invoke presence interceptors so that extra information can be dynamically added
for (PacketInterceptor packetInterceptor : presenceInterceptors) {
packetInterceptor.interceptPacket(joinPresence);
}
// Wait for a presence packet back from the server.
PacketFilter responseFilter =
new AndFilter(
new FromMatchesFilter(room + "/" + nickname),
new PacketTypeFilter(Presence.class));
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send join packet.
connection.sendPacket(joinPresence);
// Wait up to a certain number of seconds for a reply.
Presence presence =
(Presence) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (presence == null) {
throw new XMPPException("No response from server.");
}
else if (presence.getError() != null) {
throw new XMPPException(presence.getError());
}
this.nickname = nickname;
}
/**
* Changes the occupant's availability status within the room. The presence type
* will remain available but with a new status that describes the presence update and
* a new presence mode (e.g. Extended away).
*
* @param status a text message describing the presence update.
* @param mode the mode type for the presence update.
*/
public void changeAvailabilityStatus(String status, Presence.Mode mode) {
if (nickname == null || nickname.equals("")) {
throw new IllegalArgumentException("Nickname must not be null or blank.");
}
// Check that we already have joined the room before attempting to change the
// availability status.
if (!joined) {
throw new IllegalStateException(
"Must be logged into the room to change the " + "availability status.");
}
// We change the availability status by sending a presence packet to the room with the
// new presence status and mode
Presence joinPresence = new Presence(Presence.Type.available);
joinPresence.setStatus(status);
joinPresence.setMode(mode);
joinPresence.setTo(room + "/" + nickname);
// Invoke presence interceptors so that extra information can be dynamically added
for (PacketInterceptor packetInterceptor : presenceInterceptors) {
packetInterceptor.interceptPacket(joinPresence);
}
// Send join packet.
connection.sendPacket(joinPresence);
}
/**
* Kicks a visitor or participant from the room. The kicked occupant will receive a presence
* of type "unavailable" including a status code 307 and optionally along with the reason
* (if provided) and the bare JID of the user who initiated the kick. After the occupant
* was kicked from the room, the rest of the occupants will receive a presence of type
* "unavailable". The presence will include a status code 307 which means that the occupant
* was kicked from the room.
*
* @param nickname the nickname of the participant or visitor to kick from the room
* (e.g. "john").
* @param reason the reason why the participant or visitor is being kicked from the room.
* @throws XMPPException if an error occurs kicking the occupant. In particular, a
* 405 error can occur if a moderator or a user with an affiliation of "owner" or "admin"
* was intended to be kicked (i.e. Not Allowed error); or a
* 403 error can occur if the occupant that intended to kick another occupant does
* not have kicking privileges (i.e. Forbidden error); or a
* 400 error can occur if the provided nickname is not present in the room.
*/
public void kickParticipant(String nickname, String reason) throws XMPPException {
changeRole(nickname, "none", reason);
}
/**
* Grants voice to visitors in the room. In a moderated room, a moderator may want to manage
* who does and does not have "voice" in the room. To have voice means that a room occupant
* is able to send messages to the room occupants.
*
* @param nicknames the nicknames of the visitors to grant voice in the room (e.g. "john").
* @throws XMPPException if an error occurs granting voice to a visitor. In particular, a
* 403 error can occur if the occupant that intended to grant voice is not
* a moderator in this room (i.e. Forbidden error); or a
* 400 error can occur if the provided nickname is not present in the room.
*/
public void grantVoice(Collection<String> nicknames) throws XMPPException {
changeRole(nicknames, "participant");
}
/**
* Grants voice to a visitor in the room. In a moderated room, a moderator may want to manage
* who does and does not have "voice" in the room. To have voice means that a room occupant
* is able to send messages to the room occupants.
*
* @param nickname the nickname of the visitor to grant voice in the room (e.g. "john").
* @throws XMPPException if an error occurs granting voice to a visitor. In particular, a
* 403 error can occur if the occupant that intended to grant voice is not
* a moderator in this room (i.e. Forbidden error); or a
* 400 error can occur if the provided nickname is not present in the room.
*/
public void grantVoice(String nickname) throws XMPPException {
changeRole(nickname, "participant", null);
}
/**
* Revokes voice from participants in the room. In a moderated room, a moderator may want to
* revoke an occupant's privileges to speak. To have voice means that a room occupant
* is able to send messages to the room occupants.
*
* @param nicknames the nicknames of the participants to revoke voice (e.g. "john").
* @throws XMPPException if an error occurs revoking voice from a participant. In particular, a
* 405 error can occur if a moderator or a user with an affiliation of "owner" or "admin"
* was tried to revoke his voice (i.e. Not Allowed error); or a
* 400 error can occur if the provided nickname is not present in the room.
*/
public void revokeVoice(Collection<String> nicknames) throws XMPPException {
changeRole(nicknames, "visitor");
}
/**
* Revokes voice from a participant in the room. In a moderated room, a moderator may want to
* revoke an occupant's privileges to speak. To have voice means that a room occupant
* is able to send messages to the room occupants.
*
* @param nickname the nickname of the participant to revoke voice (e.g. "john").
* @throws XMPPException if an error occurs revoking voice from a participant. In particular, a
* 405 error can occur if a moderator or a user with an affiliation of "owner" or "admin"
* was tried to revoke his voice (i.e. Not Allowed error); or a
* 400 error can occur if the provided nickname is not present in the room.
*/
public void revokeVoice(String nickname) throws XMPPException {
changeRole(nickname, "visitor", null);
}
/**
* Bans users from the room. An admin or owner of the room can ban users from a room. This
* means that the banned user will no longer be able to join the room unless the ban has been
* removed. If the banned user was present in the room then he/she will be removed from the
* room and notified that he/she was banned along with the reason (if provided) and the bare
* XMPP user ID of the user who initiated the ban.
*
* @param jids the bare XMPP user IDs of the users to ban.
* @throws XMPPException if an error occurs banning a user. In particular, a
* 405 error can occur if a moderator or a user with an affiliation of "owner" or "admin"
* was tried to be banned (i.e. Not Allowed error).
*/
public void banUsers(Collection<String> jids) throws XMPPException {
changeAffiliationByAdmin(jids, "outcast");
}
/**
* Bans a user from the room. An admin or owner of the room can ban users from a room. This
* means that the banned user will no longer be able to join the room unless the ban has been
* removed. If the banned user was present in the room then he/she will be removed from the
* room and notified that he/she was banned along with the reason (if provided) and the bare
* XMPP user ID of the user who initiated the ban.
*
* @param jid the bare XMPP user ID of the user to ban (e.g. "user@host.org").
* @param reason the reason why the user was banned.
* @throws XMPPException if an error occurs banning a user. In particular, a
* 405 error can occur if a moderator or a user with an affiliation of "owner" or "admin"
* was tried to be banned (i.e. Not Allowed error).
*/
public void banUser(String jid, String reason) throws XMPPException {
changeAffiliationByAdmin(jid, "outcast", reason);
}
/**
* Grants membership to other users. Only administrators are able to grant membership. A user
* that becomes a room member will be able to enter a room of type Members-Only (i.e. a room
* that a user cannot enter without being on the member list).
*
* @param jids the XMPP user IDs of the users to grant membership.
* @throws XMPPException if an error occurs granting membership to a user.
*/
public void grantMembership(Collection<String> jids) throws XMPPException {
changeAffiliationByAdmin(jids, "member");
}
/**
* Grants membership to a user. Only administrators are able to grant membership. A user
* that becomes a room member will be able to enter a room of type Members-Only (i.e. a room
* that a user cannot enter without being on the member list).
*
* @param jid the XMPP user ID of the user to grant membership (e.g. "user@host.org").
* @throws XMPPException if an error occurs granting membership to a user.
*/
public void grantMembership(String jid) throws XMPPException {
changeAffiliationByAdmin(jid, "member", null);
}
/**
* Revokes users' membership. Only administrators are able to revoke membership. A user
* that becomes a room member will be able to enter a room of type Members-Only (i.e. a room
* that a user cannot enter without being on the member list). If the user is in the room and
* the room is of type members-only then the user will be removed from the room.
*
* @param jids the bare XMPP user IDs of the users to revoke membership.
* @throws XMPPException if an error occurs revoking membership to a user.
*/
public void revokeMembership(Collection<String> jids) throws XMPPException {
changeAffiliationByAdmin(jids, "none");
}
/**
* Revokes a user's membership. Only administrators are able to revoke membership. A user
* that becomes a room member will be able to enter a room of type Members-Only (i.e. a room
* that a user cannot enter without being on the member list). If the user is in the room and
* the room is of type members-only then the user will be removed from the room.
*
* @param jid the bare XMPP user ID of the user to revoke membership (e.g. "user@host.org").
* @throws XMPPException if an error occurs revoking membership to a user.
*/
public void revokeMembership(String jid) throws XMPPException {
changeAffiliationByAdmin(jid, "none", null);
}
/**
* Grants moderator privileges to participants or visitors. Room administrators may grant
* moderator privileges. A moderator is allowed to kick users, grant and revoke voice, invite
* other users, modify room's subject plus all the partcipants privileges.
*
* @param nicknames the nicknames of the occupants to grant moderator privileges.
* @throws XMPPException if an error occurs granting moderator privileges to a user.
*/
public void grantModerator(Collection<String> nicknames) throws XMPPException {
changeRole(nicknames, "moderator");
}
/**
* Grants moderator privileges to a participant or visitor. Room administrators may grant
* moderator privileges. A moderator is allowed to kick users, grant and revoke voice, invite
* other users, modify room's subject plus all the partcipants privileges.
*
* @param nickname the nickname of the occupant to grant moderator privileges.
* @throws XMPPException if an error occurs granting moderator privileges to a user.
*/
public void grantModerator(String nickname) throws XMPPException {
changeRole(nickname, "moderator", null);
}
/**
* Revokes moderator privileges from other users. The occupant that loses moderator
* privileges will become a participant. Room administrators may revoke moderator privileges
* only to occupants whose affiliation is member or none. This means that an administrator is
* not allowed to revoke moderator privileges from other room administrators or owners.
*
* @param nicknames the nicknames of the occupants to revoke moderator privileges.
* @throws XMPPException if an error occurs revoking moderator privileges from a user.
*/
public void revokeModerator(Collection<String> nicknames) throws XMPPException {
changeRole(nicknames, "participant");
}
/**
* Revokes moderator privileges from another user. The occupant that loses moderator
* privileges will become a participant. Room administrators may revoke moderator privileges
* only to occupants whose affiliation is member or none. This means that an administrator is
* not allowed to revoke moderator privileges from other room administrators or owners.
*
* @param nickname the nickname of the occupant to revoke moderator privileges.
* @throws XMPPException if an error occurs revoking moderator privileges from a user.
*/
public void revokeModerator(String nickname) throws XMPPException {
changeRole(nickname, "participant", null);
}
/**
* Grants ownership privileges to other users. Room owners may grant ownership privileges.
* Some room implementations will not allow to grant ownership privileges to other users.
* An owner is allowed to change defining room features as well as perform all administrative
* functions.
*
* @param jids the collection of bare XMPP user IDs of the users to grant ownership.
* @throws XMPPException if an error occurs granting ownership privileges to a user.
*/
public void grantOwnership(Collection<String> jids) throws XMPPException {
changeAffiliationByOwner(jids, "owner");
}
/**
* Grants ownership privileges to another user. Room owners may grant ownership privileges.
* Some room implementations will not allow to grant ownership privileges to other users.
* An owner is allowed to change defining room features as well as perform all administrative
* functions.
*
* @param jid the bare XMPP user ID of the user to grant ownership (e.g. "user@host.org").
* @throws XMPPException if an error occurs granting ownership privileges to a user.
*/
public void grantOwnership(String jid) throws XMPPException {
changeAffiliationByOwner(jid, "owner");
}
/**
* Revokes ownership privileges from other users. The occupant that loses ownership
* privileges will become an administrator. Room owners may revoke ownership privileges.
* Some room implementations will not allow to grant ownership privileges to other users.
*
* @param jids the bare XMPP user IDs of the users to revoke ownership.
* @throws XMPPException if an error occurs revoking ownership privileges from a user.
*/
public void revokeOwnership(Collection<String> jids) throws XMPPException {
changeAffiliationByOwner(jids, "admin");
}
/**
* Revokes ownership privileges from another user. The occupant that loses ownership
* privileges will become an administrator. Room owners may revoke ownership privileges.
* Some room implementations will not allow to grant ownership privileges to other users.
*
* @param jid the bare XMPP user ID of the user to revoke ownership (e.g. "user@host.org").
* @throws XMPPException if an error occurs revoking ownership privileges from a user.
*/
public void revokeOwnership(String jid) throws XMPPException {
changeAffiliationByOwner(jid, "admin");
}
/**
* Grants administrator privileges to other users. Room owners may grant administrator
* privileges to a member or unaffiliated user. An administrator is allowed to perform
* administrative functions such as banning users and edit moderator list.
*
* @param jids the bare XMPP user IDs of the users to grant administrator privileges.
* @throws XMPPException if an error occurs granting administrator privileges to a user.
*/
public void grantAdmin(Collection<String> jids) throws XMPPException {
changeAffiliationByOwner(jids, "admin");
}
/**
* Grants administrator privileges to another user. Room owners may grant administrator
* privileges to a member or unaffiliated user. An administrator is allowed to perform
* administrative functions such as banning users and edit moderator list.
*
* @param jid the bare XMPP user ID of the user to grant administrator privileges
* (e.g. "user@host.org").
* @throws XMPPException if an error occurs granting administrator privileges to a user.
*/
public void grantAdmin(String jid) throws XMPPException {
changeAffiliationByOwner(jid, "admin");
}
/**
* Revokes administrator privileges from users. The occupant that loses administrator
* privileges will become a member. Room owners may revoke administrator privileges from
* a member or unaffiliated user.
*
* @param jids the bare XMPP user IDs of the user to revoke administrator privileges.
* @throws XMPPException if an error occurs revoking administrator privileges from a user.
*/
public void revokeAdmin(Collection<String> jids) throws XMPPException {
changeAffiliationByOwner(jids, "member");
}
/**
* Revokes administrator privileges from a user. The occupant that loses administrator
* privileges will become a member. Room owners may revoke administrator privileges from
* a member or unaffiliated user.
*
* @param jid the bare XMPP user ID of the user to revoke administrator privileges
* (e.g. "user@host.org").
* @throws XMPPException if an error occurs revoking administrator privileges from a user.
*/
public void revokeAdmin(String jid) throws XMPPException {
changeAffiliationByOwner(jid, "member");
}
private void changeAffiliationByOwner(String jid, String affiliation) throws XMPPException {
MUCOwner iq = new MUCOwner();
iq.setTo(room);
iq.setType(IQ.Type.SET);
// Set the new affiliation.
MUCOwner.Item item = new MUCOwner.Item(affiliation);
item.setJid(jid);
iq.addItem(item);
// Wait for a response packet back from the server.
PacketFilter responseFilter = new PacketIDFilter(iq.getPacketID());
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send the change request to the server.
connection.sendPacket(iq);
// Wait up to a certain number of seconds for a reply.
IQ answer = (IQ) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (answer == null) {
throw new XMPPException("No response from server.");
}
else if (answer.getError() != null) {
throw new XMPPException(answer.getError());
}
}
private void changeAffiliationByOwner(Collection<String> jids, String affiliation)
throws XMPPException {
MUCOwner iq = new MUCOwner();
iq.setTo(room);
iq.setType(IQ.Type.SET);
for (String jid : jids) {
// Set the new affiliation.
MUCOwner.Item item = new MUCOwner.Item(affiliation);
item.setJid(jid);
iq.addItem(item);
}
// Wait for a response packet back from the server.
PacketFilter responseFilter = new PacketIDFilter(iq.getPacketID());
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send the change request to the server.
connection.sendPacket(iq);
// Wait up to a certain number of seconds for a reply.
IQ answer = (IQ) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (answer == null) {
throw new XMPPException("No response from server.");
}
else if (answer.getError() != null) {
throw new XMPPException(answer.getError());
}
}
private void changeAffiliationByAdmin(String jid, String affiliation, String reason)
throws XMPPException {
MUCAdmin iq = new MUCAdmin();
iq.setTo(room);
iq.setType(IQ.Type.SET);
// Set the new affiliation.
MUCAdmin.Item item = new MUCAdmin.Item(affiliation, null);
item.setJid(jid);
item.setReason(reason);
iq.addItem(item);
// Wait for a response packet back from the server.
PacketFilter responseFilter = new PacketIDFilter(iq.getPacketID());
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send the change request to the server.
connection.sendPacket(iq);
// Wait up to a certain number of seconds for a reply.
IQ answer = (IQ) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (answer == null) {
throw new XMPPException("No response from server.");
}
else if (answer.getError() != null) {
throw new XMPPException(answer.getError());
}
}
private void changeAffiliationByAdmin(Collection<String> jids, String affiliation)
throws XMPPException {
MUCAdmin iq = new MUCAdmin();
iq.setTo(room);
iq.setType(IQ.Type.SET);
for (String jid : jids) {
// Set the new affiliation.
MUCAdmin.Item item = new MUCAdmin.Item(affiliation, null);
item.setJid(jid);
iq.addItem(item);
}
// Wait for a response packet back from the server.
PacketFilter responseFilter = new PacketIDFilter(iq.getPacketID());
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send the change request to the server.
connection.sendPacket(iq);
// Wait up to a certain number of seconds for a reply.
IQ answer = (IQ) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (answer == null) {
throw new XMPPException("No response from server.");
}
else if (answer.getError() != null) {
throw new XMPPException(answer.getError());
}
}
private void changeRole(String nickname, String role, String reason) throws XMPPException {
MUCAdmin iq = new MUCAdmin();
iq.setTo(room);
iq.setType(IQ.Type.SET);
// Set the new role.
MUCAdmin.Item item = new MUCAdmin.Item(null, role);
item.setNick(nickname);
item.setReason(reason);
iq.addItem(item);
// Wait for a response packet back from the server.
PacketFilter responseFilter = new PacketIDFilter(iq.getPacketID());
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send the change request to the server.
connection.sendPacket(iq);
// Wait up to a certain number of seconds for a reply.
IQ answer = (IQ) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (answer == null) {
throw new XMPPException("No response from server.");
}
else if (answer.getError() != null) {
throw new XMPPException(answer.getError());
}
}
private void changeRole(Collection<String> nicknames, String role) throws XMPPException {
MUCAdmin iq = new MUCAdmin();
iq.setTo(room);
iq.setType(IQ.Type.SET);
for (String nickname : nicknames) {
// Set the new role.
MUCAdmin.Item item = new MUCAdmin.Item(null, role);
item.setNick(nickname);
iq.addItem(item);
}
// Wait for a response packet back from the server.
PacketFilter responseFilter = new PacketIDFilter(iq.getPacketID());
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send the change request to the server.
connection.sendPacket(iq);
// Wait up to a certain number of seconds for a reply.
IQ answer = (IQ) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (answer == null) {
throw new XMPPException("No response from server.");
}
else if (answer.getError() != null) {
throw new XMPPException(answer.getError());
}
}
/**
* Returns the number of occupants in the group chat.<p>
*
* Note: this value will only be accurate after joining the group chat, and
* may fluctuate over time. If you query this value directly after joining the
* group chat it may not be accurate, as it takes a certain amount of time for
* the server to send all presence packets to this client.
*
* @return the number of occupants in the group chat.
*/
public int getOccupantsCount() {
return occupantsMap.size();
}
/**
* Returns an Iterator (of Strings) for the list of fully qualified occupants
* in the group chat. For example, "conference@chat.jivesoftware.com/SomeUser".
* Typically, a client would only display the nickname of the occupant. To
* get the nickname from the fully qualified name, use the
* {@link org.jivesoftware.smack.util.StringUtils#parseResource(String)} method.
* Note: this value will only be accurate after joining the group chat, and may
* fluctuate over time.
*
* @return an Iterator for the occupants in the group chat.
*/
public Iterator<String> getOccupants() {
return Collections.unmodifiableList(new ArrayList<String>(occupantsMap.keySet()))
.iterator();
}
/**
* Returns the presence info for a particular user, or <tt>null</tt> if the user
* is not in the room.<p>
*
* @param user the room occupant to search for his presence. The format of user must
* be: roomName@service/nickname (e.g. darkcave@macbeth.shakespeare.lit/thirdwitch).
* @return the occupant's current presence, or <tt>null</tt> if the user is unavailable
* or if no presence information is available.
*/
public Presence getOccupantPresence(String user) {
return occupantsMap.get(user);
}
/**
* Returns the Occupant information for a particular occupant, or <tt>null</tt> if the
* user is not in the room. The Occupant object may include information such as full
* JID of the user as well as the role and affiliation of the user in the room.<p>
*
* @param user the room occupant to search for his presence. The format of user must
* be: roomName@service/nickname (e.g. darkcave@macbeth.shakespeare.lit/thirdwitch).
* @return the Occupant or <tt>null</tt> if the user is unavailable (i.e. not in the room).
*/
public Occupant getOccupant(String user) {
Presence presence = occupantsMap.get(user);
if (presence != null) {
return new Occupant(presence);
}
return null;
}
/**
* Adds a packet listener that will be notified of any new Presence packets
* sent to the group chat. Using a listener is a suitable way to know when the list
* of occupants should be re-loaded due to any changes.
*
* @param listener a packet listener that will be notified of any presence packets
* sent to the group chat.
*/
public void addParticipantListener(PacketListener listener) {
connection.addPacketListener(listener, presenceFilter);
connectionListeners.add(listener);
}
/**
* Remoces a packet listener that was being notified of any new Presence packets
* sent to the group chat.
*
* @param listener a packet listener that was being notified of any presence packets
* sent to the group chat.
*/
public void removeParticipantListener(PacketListener listener) {
connection.removePacketListener(listener);
connectionListeners.remove(listener);
}
/**
* Returns a collection of <code>Affiliate</code> with the room owners.
*
* @return a collection of <code>Affiliate</code> with the room owners.
* @throws XMPPException if an error occured while performing the request to the server or you
* don't have enough privileges to get this information.
*/
public Collection<Affiliate> getOwners() throws XMPPException {
return getAffiliatesByOwner("owner");
}
/**
* Returns a collection of <code>Affiliate</code> with the room administrators.
*
* @return a collection of <code>Affiliate</code> with the room administrators.
* @throws XMPPException if an error occured while performing the request to the server or you
* don't have enough privileges to get this information.
*/
public Collection<Affiliate> getAdmins() throws XMPPException {
return getAffiliatesByOwner("admin");
}
/**
* Returns a collection of <code>Affiliate</code> with the room members.
*
* @return a collection of <code>Affiliate</code> with the room members.
* @throws XMPPException if an error occured while performing the request to the server or you
* don't have enough privileges to get this information.
*/
public Collection<Affiliate> getMembers() throws XMPPException {
return getAffiliatesByAdmin("member");
}
/**
* Returns a collection of <code>Affiliate</code> with the room outcasts.
*
* @return a collection of <code>Affiliate</code> with the room outcasts.
* @throws XMPPException if an error occured while performing the request to the server or you
* don't have enough privileges to get this information.
*/
public Collection<Affiliate> getOutcasts() throws XMPPException {
return getAffiliatesByAdmin("outcast");
}
/**
* Returns a collection of <code>Affiliate</code> that have the specified room affiliation
* sending a request in the owner namespace.
*
* @param affiliation the affiliation of the users in the room.
* @return a collection of <code>Affiliate</code> that have the specified room affiliation.
* @throws XMPPException if an error occured while performing the request to the server or you
* don't have enough privileges to get this information.
*/
private Collection<Affiliate> getAffiliatesByOwner(String affiliation) throws XMPPException {
MUCOwner iq = new MUCOwner();
iq.setTo(room);
iq.setType(IQ.Type.GET);
// Set the specified affiliation. This may request the list of owners/admins/members/outcasts.
MUCOwner.Item item = new MUCOwner.Item(affiliation);
iq.addItem(item);
// Wait for a response packet back from the server.
PacketFilter responseFilter = new PacketIDFilter(iq.getPacketID());
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send the request to the server.
connection.sendPacket(iq);
// Wait up to a certain number of seconds for a reply.
MUCOwner answer = (MUCOwner) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (answer == null) {
throw new XMPPException("No response from server.");
}
else if (answer.getError() != null) {
throw new XMPPException(answer.getError());
}
// Get the list of affiliates from the server's answer
List<Affiliate> affiliates = new ArrayList<Affiliate>();
for (Iterator it = answer.getItems(); it.hasNext();) {
affiliates.add(new Affiliate((MUCOwner.Item) it.next()));
}
return affiliates;
}
/**
* Returns a collection of <code>Affiliate</code> that have the specified room affiliation
* sending a request in the admin namespace.
*
* @param affiliation the affiliation of the users in the room.
* @return a collection of <code>Affiliate</code> that have the specified room affiliation.
* @throws XMPPException if an error occured while performing the request to the server or you
* don't have enough privileges to get this information.
*/
private Collection<Affiliate> getAffiliatesByAdmin(String affiliation) throws XMPPException {
MUCAdmin iq = new MUCAdmin();
iq.setTo(room);
iq.setType(IQ.Type.GET);
// Set the specified affiliation. This may request the list of owners/admins/members/outcasts.
MUCAdmin.Item item = new MUCAdmin.Item(affiliation, null);
iq.addItem(item);
// Wait for a response packet back from the server.
PacketFilter responseFilter = new PacketIDFilter(iq.getPacketID());
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send the request to the server.
connection.sendPacket(iq);
// Wait up to a certain number of seconds for a reply.
MUCAdmin answer = (MUCAdmin) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (answer == null) {
throw new XMPPException("No response from server.");
}
else if (answer.getError() != null) {
throw new XMPPException(answer.getError());
}
// Get the list of affiliates from the server's answer
List<Affiliate> affiliates = new ArrayList<Affiliate>();
for (Iterator it = answer.getItems(); it.hasNext();) {
affiliates.add(new Affiliate((MUCAdmin.Item) it.next()));
}
return affiliates;
}
/**
* Returns a collection of <code>Occupant</code> with the room moderators.
*
* @return a collection of <code>Occupant</code> with the room moderators.
* @throws XMPPException if an error occured while performing the request to the server or you
* don't have enough privileges to get this information.
*/
public Collection<Occupant> getModerators() throws XMPPException {
return getOccupants("moderator");
}
/**
* Returns a collection of <code>Occupant</code> with the room participants.
*
* @return a collection of <code>Occupant</code> with the room participants.
* @throws XMPPException if an error occured while performing the request to the server or you
* don't have enough privileges to get this information.
*/
public Collection<Occupant> getParticipants() throws XMPPException {
return getOccupants("participant");
}
/**
* Returns a collection of <code>Occupant</code> that have the specified room role.
*
* @param role the role of the occupant in the room.
* @return a collection of <code>Occupant</code> that have the specified room role.
* @throws XMPPException if an error occured while performing the request to the server or you
* don't have enough privileges to get this information.
*/
private Collection<Occupant> getOccupants(String role) throws XMPPException {
MUCAdmin iq = new MUCAdmin();
iq.setTo(room);
iq.setType(IQ.Type.GET);
// Set the specified role. This may request the list of moderators/participants.
MUCAdmin.Item item = new MUCAdmin.Item(null, role);
iq.addItem(item);
// Wait for a response packet back from the server.
PacketFilter responseFilter = new PacketIDFilter(iq.getPacketID());
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send the request to the server.
connection.sendPacket(iq);
// Wait up to a certain number of seconds for a reply.
MUCAdmin answer = (MUCAdmin) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (answer == null) {
throw new XMPPException("No response from server.");
}
else if (answer.getError() != null) {
throw new XMPPException(answer.getError());
}
// Get the list of participants from the server's answer
List<Occupant> participants = new ArrayList<Occupant>();
for (Iterator it = answer.getItems(); it.hasNext();) {
participants.add(new Occupant((MUCAdmin.Item) it.next()));
}
return participants;
}
/**
* Sends a message to the chat room.
*
* @param text the text of the message to send.
* @throws XMPPException if sending the message fails.
*/
public void sendMessage(String text) throws XMPPException {
Message message = new Message(room, Message.Type.GROUP_CHAT);
message.setBody(text);
connection.sendPacket(message);
}
/**
* Returns a new Chat for sending private messages to a given room occupant.
* The Chat's occupant address is the room's JID (i.e. roomName@service/nick). The server
* service will change the 'from' address to the sender's room JID and delivering the message
* to the intended recipient's full JID.
*
* @param occupant occupant unique room JID (e.g. 'darkcave@macbeth.shakespeare.lit/Paul').
* @return new Chat for sending private messages to a given room occupant.
*/
public Chat createPrivateChat(String occupant) {
return new Chat(connection, occupant);
}
/**
* Creates a new Message to send to the chat room.
*
* @return a new Message addressed to the chat room.
*/
public Message createMessage() {
return new Message(room, Message.Type.GROUP_CHAT);
}
/**
* Sends a Message to the chat room.
*
* @param message the message.
* @throws XMPPException if sending the message fails.
*/
public void sendMessage(Message message) throws XMPPException {
connection.sendPacket(message);
}
/**
* Polls for and returns the next message, or <tt>null</tt> if there isn't
* a message immediately available. This method provides significantly different
* functionalty than the {@link #nextMessage()} method since it's non-blocking.
* In other words, the method call will always return immediately, whereas the
* nextMessage method will return only when a message is available (or after
* a specific timeout).
*
* @return the next message if one is immediately available and
* <tt>null</tt> otherwise.
*/
public Message pollMessage() {
return (Message) messageCollector.pollResult();
}
/**
* Returns the next available message in the chat. The method call will block
* (not return) until a message is available.
*
* @return the next message.
*/
public Message nextMessage() {
return (Message) messageCollector.nextResult();
}
/**
* Returns the next available message in the chat. The method call will block
* (not return) until a packet is available or the <tt>timeout</tt> has elapased.
* If the timeout elapses without a result, <tt>null</tt> will be returned.
*
* @param timeout the maximum amount of time to wait for the next message.
* @return the next message, or <tt>null</tt> if the timeout elapses without a
* message becoming available.
*/
public Message nextMessage(long timeout) {
return (Message) messageCollector.nextResult(timeout);
}
/**
* Adds a packet listener that will be notified of any new messages in the
* group chat. Only "group chat" messages addressed to this group chat will
* be delivered to the listener. If you wish to listen for other packets
* that may be associated with this group chat, you should register a
* PacketListener directly with the XMPPConnection with the appropriate
* PacketListener.
*
* @param listener a packet listener.
*/
public void addMessageListener(PacketListener listener) {
connection.addPacketListener(listener, messageFilter);
connectionListeners.add(listener);
}
/**
* Removes a packet listener that was being notified of any new messages in the
* multi user chat. Only "group chat" messages addressed to this multi user chat were
* being delivered to the listener.
*
* @param listener a packet listener.
*/
public void removeMessageListener(PacketListener listener) {
connection.removePacketListener(listener);
connectionListeners.remove(listener);
}
/**
* Changes the subject within the room. As a default, only users with a role of "moderator"
* are allowed to change the subject in a room. Although some rooms may be configured to
* allow a mere participant or even a visitor to change the subject.
*
* @param subject the new room's subject to set.
* @throws XMPPException if someone without appropriate privileges attempts to change the
* room subject will throw an error with code 403 (i.e. Forbidden)
*/
public void changeSubject(final String subject) throws XMPPException {
Message message = new Message(room, Message.Type.GROUP_CHAT);
message.setSubject(subject);
// Wait for an error or confirmation message back from the server.
PacketFilter responseFilter =
new AndFilter(
new FromMatchesFilter(room),
new PacketTypeFilter(Message.class));
responseFilter = new AndFilter(responseFilter, new PacketFilter() {
public boolean accept(Packet packet) {
Message msg = (Message) packet;
return subject.equals(msg.getSubject());
}
});
PacketCollector response = connection.createPacketCollector(responseFilter);
// Send change subject packet.
connection.sendPacket(message);
// Wait up to a certain number of seconds for a reply.
Message answer =
(Message) response.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Stop queuing results
response.cancel();
if (answer == null) {
throw new XMPPException("No response from server.");
}
else if (answer.getError() != null) {
throw new XMPPException(answer.getError());
}
}
/**
* Notification message that the user has joined the room.
*/
private synchronized void userHasJoined() {
// Update the list of joined rooms through this connection
List<String> rooms = joinedRooms.get(connection);
if (rooms == null) {
rooms = new ArrayList<String>();
joinedRooms.put(connection, rooms);
}
rooms.add(room);
}
/**
* Notification message that the user has left the room.
*/
private synchronized void userHasLeft() {
// Update the list of joined rooms through this connection
List<String> rooms = joinedRooms.get(connection);
if (rooms == null) {
return;
}
rooms.remove(room);
}
/**
* Returns the MUCUser packet extension included in the packet or <tt>null</tt> if none.
*
* @param packet the packet that may include the MUCUser extension.
* @return the MUCUser found in the packet.
*/
private MUCUser getMUCUserExtension(Packet packet) {
if (packet != null) {
// Get the MUC User extension
return (MUCUser) packet.getExtension("x", "http://jabber.org/protocol/muc#user");
}
return null;
}
/**
* Adds a listener that will be notified of changes in your status in the room
* such as the user being kicked, banned, or granted admin permissions.
*
* @param listener a user status listener.
*/
public void addUserStatusListener(UserStatusListener listener) {
synchronized (userStatusListeners) {
if (!userStatusListeners.contains(listener)) {
userStatusListeners.add(listener);
}
}
}
/**
* Removes a listener that was being notified of changes in your status in the room
* such as the user being kicked, banned, or granted admin permissions.
*
* @param listener a user status listener.
*/
public void removeUserStatusListener(UserStatusListener listener) {
synchronized (userStatusListeners) {
userStatusListeners.remove(listener);
}
}
private void fireUserStatusListeners(String methodName, Object[] params) {
UserStatusListener[] listeners;
synchronized (userStatusListeners) {
listeners = new UserStatusListener[userStatusListeners.size()];
userStatusListeners.toArray(listeners);
}
// Get the classes of the method parameters
Class[] paramClasses = new Class[params.length];
for (int i = 0; i < params.length; i++) {
paramClasses[i] = params[i].getClass();
}
try {
// Get the method to execute based on the requested methodName and parameters classes
Method method = UserStatusListener.class.getDeclaredMethod(methodName, paramClasses);
for (UserStatusListener listener : listeners) {
method.invoke(listener, params);
}
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
/**
* Adds a listener that will be notified of changes in occupants status in the room
* such as the user being kicked, banned, or granted admin permissions.
*
* @param listener a participant status listener.
*/
public void addParticipantStatusListener(ParticipantStatusListener listener) {
synchronized (participantStatusListeners) {
if (!participantStatusListeners.contains(listener)) {
participantStatusListeners.add(listener);
}
}
}
/**
* Removes a listener that was being notified of changes in occupants status in the room
* such as the user being kicked, banned, or granted admin permissions.
*
* @param listener a participant status listener.
*/
public void removeParticipantStatusListener(ParticipantStatusListener listener) {
synchronized (participantStatusListeners) {
participantStatusListeners.remove(listener);
}
}
private void fireParticipantStatusListeners(String methodName, List<String> params) {
ParticipantStatusListener[] listeners;
synchronized (participantStatusListeners) {
listeners = new ParticipantStatusListener[participantStatusListeners.size()];
participantStatusListeners.toArray(listeners);
}
try {
// Get the method to execute based on the requested methodName and parameter
Class[] classes = new Class[params.size()];
for (int i=0;i<params.size(); i++) {
classes[i] = String.class;
}
Method method = ParticipantStatusListener.class.getDeclaredMethod(methodName, classes);
for (ParticipantStatusListener listener : listeners) {
method.invoke(listener, params.toArray());
}
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
private void init() {
// Create filters
messageFilter =
new AndFilter(
new FromMatchesFilter(room),
new MessageTypeFilter(Message.Type.GROUP_CHAT));
messageFilter = new AndFilter(messageFilter, new PacketFilter() {
public boolean accept(Packet packet) {
Message msg = (Message) packet;
return msg.getBody() != null;
}
});
presenceFilter =
new AndFilter(new FromMatchesFilter(room), new PacketTypeFilter(Presence.class));
// Create a collector for incoming messages.
messageCollector = new ConnectionDetachedPacketCollector();
// Create a listener for subject updates.
PacketListener subjectListener = new PacketListener() {
public void processPacket(Packet packet) {
Message msg = (Message) packet;
// Update the room subject
subject = msg.getSubject();
// Fire event for subject updated listeners
fireSubjectUpdatedListeners(
msg.getSubject(),
msg.getFrom());
}
};
// Create a listener for all presence updates.
PacketListener presenceListener = new PacketListener() {
public void processPacket(Packet packet) {
Presence presence = (Presence) packet;
String from = presence.getFrom();
String myRoomJID = room + "/" + nickname;
boolean isUserStatusModification = presence.getFrom().equals(myRoomJID);
if (presence.getType() == Presence.Type.available) {
Presence oldPresence = occupantsMap.put(from, presence);
if (oldPresence != null) {
// Get the previous occupant's affiliation & role
MUCUser mucExtension = getMUCUserExtension(oldPresence);
String oldAffiliation = mucExtension.getItem().getAffiliation();
String oldRole = mucExtension.getItem().getRole();
// Get the new occupant's affiliation & role
mucExtension = getMUCUserExtension(presence);
String newAffiliation = mucExtension.getItem().getAffiliation();
String newRole = mucExtension.getItem().getRole();
// Fire role modification events
checkRoleModifications(oldRole, newRole, isUserStatusModification, from);
// Fire affiliation modification events
checkAffiliationModifications(
oldAffiliation,
newAffiliation,
isUserStatusModification,
from);
}
else {
// A new occupant has joined the room
if (!isUserStatusModification) {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("joined", params);
}
}
}
else if (presence.getType() == Presence.Type.unavailable) {
occupantsMap.remove(from);
MUCUser mucUser = getMUCUserExtension(presence);
if (mucUser != null && mucUser.getStatus() != null) {
// Fire events according to the received presence code
checkPresenceCode(
mucUser.getStatus().getCode(),
presence.getFrom().equals(myRoomJID),
mucUser,
from);
} else {
// An occupant has left the room
if (!isUserStatusModification) {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("left", params);
}
}
}
}
};
// Listens for all messages that include a MUCUser extension and fire the invitation
// rejection listeners if the message includes an invitation rejection.
PacketListener declinesListener = new PacketListener() {
public void processPacket(Packet packet) {
// Get the MUC User extension
MUCUser mucUser = getMUCUserExtension(packet);
// Check if the MUCUser informs that the invitee has declined the invitation
if (mucUser.getDecline() != null &&
((Message) packet).getType() != Message.Type.ERROR) {
// Fire event for invitation rejection listeners
fireInvitationRejectionListeners(
mucUser.getDecline().getFrom(),
mucUser.getDecline().getReason());
}
}
};
PacketMultiplexListener packetMultiplexor = new PacketMultiplexListener(
messageCollector, presenceListener, subjectListener,
declinesListener);
roomListenerMultiplexor = RoomListenerMultiplexor.getRoomMultiplexor(connection);
roomListenerMultiplexor.addRoom(room, packetMultiplexor);
}
/**
* Fires notification events if the role of a room occupant has changed. If the occupant that
* changed his role is your occupant then the <code>UserStatusListeners</code> added to this
* <code>MultiUserChat</code> will be fired. On the other hand, if the occupant that changed
* his role is not yours then the <code>ParticipantStatusListeners</code> added to this
* <code>MultiUserChat</code> will be fired. The following table shows the events that will
* be fired depending on the previous and new role of the occupant.
*
* <pre>
* <table border="1">
* <tr><td><b>Old</b></td><td><b>New</b></td><td><b>Events</b></td></tr>
*
* <tr><td>None</td><td>Visitor</td><td>--</td></tr>
* <tr><td>Visitor</td><td>Participant</td><td>voiceGranted</td></tr>
* <tr><td>Participant</td><td>Moderator</td><td>moderatorGranted</td></tr>
*
* <tr><td>None</td><td>Participant</td><td>voiceGranted</td></tr>
* <tr><td>None</td><td>Moderator</td><td>voiceGranted + moderatorGranted</td></tr>
* <tr><td>Visitor</td><td>Moderator</td><td>voiceGranted + moderatorGranted</td></tr>
*
* <tr><td>Moderator</td><td>Participant</td><td>moderatorRevoked</td></tr>
* <tr><td>Participant</td><td>Visitor</td><td>voiceRevoked</td></tr>
* <tr><td>Visitor</td><td>None</td><td>kicked</td></tr>
*
* <tr><td>Moderator</td><td>Visitor</td><td>voiceRevoked + moderatorRevoked</td></tr>
* <tr><td>Moderator</td><td>None</td><td>kicked</td></tr>
* <tr><td>Participant</td><td>None</td><td>kicked</td></tr>
* </table>
* </pre>
*
* @param oldRole the previous role of the user in the room before receiving the new presence
* @param newRole the new role of the user in the room after receiving the new presence
* @param isUserModification whether the received presence is about your user in the room or not
* @param from the occupant whose role in the room has changed
* (e.g. room@conference.jabber.org/nick).
*/
private void checkRoleModifications(
String oldRole,
String newRole,
boolean isUserModification,
String from) {
// Voice was granted to a visitor
if (("visitor".equals(oldRole) || "none".equals(oldRole))
&& "participant".equals(newRole)) {
if (isUserModification) {
fireUserStatusListeners("voiceGranted", new Object[] {});
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("voiceGranted", params);
}
}
// The participant's voice was revoked from the room
else if (
"participant".equals(oldRole)
&& ("visitor".equals(newRole) || "none".equals(newRole))) {
if (isUserModification) {
fireUserStatusListeners("voiceRevoked", new Object[] {});
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("voiceRevoked", params);
}
}
// Moderator privileges were granted to a participant
if (!"moderator".equals(oldRole) && "moderator".equals(newRole)) {
if ("visitor".equals(oldRole) || "none".equals(oldRole)) {
if (isUserModification) {
fireUserStatusListeners("voiceGranted", new Object[] {});
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("voiceGranted", params);
}
}
if (isUserModification) {
fireUserStatusListeners("moderatorGranted", new Object[] {});
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("moderatorGranted", params);
}
}
// Moderator privileges were revoked from a participant
else if ("moderator".equals(oldRole) && !"moderator".equals(newRole)) {
if ("visitor".equals(newRole) || "none".equals(newRole)) {
if (isUserModification) {
fireUserStatusListeners("voiceRevoked", new Object[] {});
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("voiceRevoked", params);
}
}
if (isUserModification) {
fireUserStatusListeners("moderatorRevoked", new Object[] {});
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("moderatorRevoked", params);
}
}
}
/**
* Fires notification events if the affiliation of a room occupant has changed. If the
* occupant that changed his affiliation is your occupant then the
* <code>UserStatusListeners</code> added to this <code>MultiUserChat</code> will be fired.
* On the other hand, if the occupant that changed his affiliation is not yours then the
* <code>ParticipantStatusListeners</code> added to this <code>MultiUserChat</code> will be
* fired. The following table shows the events that will be fired depending on the previous
* and new affiliation of the occupant.
*
* <pre>
* <table border="1">
* <tr><td><b>Old</b></td><td><b>New</b></td><td><b>Events</b></td></tr>
*
* <tr><td>None</td><td>Member</td><td>membershipGranted</td></tr>
* <tr><td>Member</td><td>Admin</td><td>membershipRevoked + adminGranted</td></tr>
* <tr><td>Admin</td><td>Owner</td><td>adminRevoked + ownershipGranted</td></tr>
*
* <tr><td>None</td><td>Admin</td><td>adminGranted</td></tr>
* <tr><td>None</td><td>Owner</td><td>ownershipGranted</td></tr>
* <tr><td>Member</td><td>Owner</td><td>membershipRevoked + ownershipGranted</td></tr>
*
* <tr><td>Owner</td><td>Admin</td><td>ownershipRevoked + adminGranted</td></tr>
* <tr><td>Admin</td><td>Member</td><td>adminRevoked + membershipGranted</td></tr>
* <tr><td>Member</td><td>None</td><td>membershipRevoked</td></tr>
*
* <tr><td>Owner</td><td>Member</td><td>ownershipRevoked + membershipGranted</td></tr>
* <tr><td>Owner</td><td>None</td><td>ownershipRevoked</td></tr>
* <tr><td>Admin</td><td>None</td><td>adminRevoked</td></tr>
* <tr><td><i>Anyone</i></td><td>Outcast</td><td>banned</td></tr>
* </table>
* </pre>
*
* @param oldAffiliation the previous affiliation of the user in the room before receiving the
* new presence
* @param newAffiliation the new affiliation of the user in the room after receiving the new
* presence
* @param isUserModification whether the received presence is about your user in the room or not
* @param from the occupant whose role in the room has changed
* (e.g. room@conference.jabber.org/nick).
*/
private void checkAffiliationModifications(
String oldAffiliation,
String newAffiliation,
boolean isUserModification,
String from) {
// First check for revoked affiliation and then for granted affiliations. The idea is to
// first fire the "revoke" events and then fire the "grant" events.
// The user's ownership to the room was revoked
if ("owner".equals(oldAffiliation) && !"owner".equals(newAffiliation)) {
if (isUserModification) {
fireUserStatusListeners("ownershipRevoked", new Object[] {});
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("ownershipRevoked", params);
}
}
// The user's administrative privileges to the room were revoked
else if ("admin".equals(oldAffiliation) && !"admin".equals(newAffiliation)) {
if (isUserModification) {
fireUserStatusListeners("adminRevoked", new Object[] {});
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("adminRevoked", params);
}
}
// The user's membership to the room was revoked
else if ("member".equals(oldAffiliation) && !"member".equals(newAffiliation)) {
if (isUserModification) {
fireUserStatusListeners("membershipRevoked", new Object[] {});
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("membershipRevoked", params);
}
}
// The user was granted ownership to the room
if (!"owner".equals(oldAffiliation) && "owner".equals(newAffiliation)) {
if (isUserModification) {
fireUserStatusListeners("ownershipGranted", new Object[] {});
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("ownershipGranted", params);
}
}
// The user was granted administrative privileges to the room
else if (!"admin".equals(oldAffiliation) && "admin".equals(newAffiliation)) {
if (isUserModification) {
fireUserStatusListeners("adminGranted", new Object[] {});
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("adminGranted", params);
}
}
// The user was granted membership to the room
else if (!"member".equals(oldAffiliation) && "member".equals(newAffiliation)) {
if (isUserModification) {
fireUserStatusListeners("membershipGranted", new Object[] {});
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
fireParticipantStatusListeners("membershipGranted", params);
}
}
}
/**
* Fires events according to the received presence code.
*
* @param code
* @param isUserModification
* @param mucUser
* @param from
*/
private void checkPresenceCode(
String code,
boolean isUserModification,
MUCUser mucUser,
String from) {
// Check if an occupant was kicked from the room
if ("307".equals(code)) {
// Check if this occupant was kicked
if (isUserModification) {
joined = false;
fireUserStatusListeners(
"kicked",
new Object[] { mucUser.getItem().getActor(), mucUser.getItem().getReason()});
// Reset occupant information.
occupantsMap.clear();
nickname = null;
userHasLeft();
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
params.add(mucUser.getItem().getActor());
params.add(mucUser.getItem().getReason());
fireParticipantStatusListeners("kicked", params);
}
}
// A user was banned from the room
else if ("301".equals(code)) {
// Check if this occupant was banned
if (isUserModification) {
joined = false;
fireUserStatusListeners(
"banned",
new Object[] { mucUser.getItem().getActor(), mucUser.getItem().getReason()});
// Reset occupant information.
occupantsMap.clear();
nickname = null;
userHasLeft();
}
else {
List<String> params = new ArrayList<String>();
params.add(from);
params.add(mucUser.getItem().getActor());
params.add(mucUser.getItem().getReason());
fireParticipantStatusListeners("banned", params);
}
}
// A user's membership was revoked from the room
else if ("321".equals(code)) {
// Check if this occupant's membership was revoked
if (isUserModification) {
joined = false;
fireUserStatusListeners("membershipRevoked", new Object[] {});
// Reset occupant information.
occupantsMap.clear();
nickname = null;
userHasLeft();
}
}
// A occupant has changed his nickname in the room
else if ("303".equals(code)) {
List<String> params = new ArrayList<String>();
params.add(from);
params.add(mucUser.getItem().getNick());
fireParticipantStatusListeners("nicknameChanged", params);
}
}
public void finalize() throws Throwable {
super.finalize();
try {
if (connection != null) {
roomListenerMultiplexor.removeRoom(room);
// Remove all the PacketListeners added to the connection by this chat
for (PacketListener connectionListener : connectionListeners) {
connection.removePacketListener(connectionListener);
}
}
}
catch (Exception e) {
// Do nothing
}
}
/**
* An InvitationsMonitor monitors a given connection to detect room invitations. Every
* time the InvitationsMonitor detects a new invitation it will fire the invitation listeners.
*
* @author Gaston Dombiak
*/
private static class InvitationsMonitor implements ConnectionListener {
// We use a WeakHashMap so that the GC can collect the monitor when the
// connection is no longer referenced by any object.
private final static Map<XMPPConnection, WeakReference<InvitationsMonitor>> monitors =
new WeakHashMap<XMPPConnection, WeakReference<InvitationsMonitor>>();
private final List<InvitationListener> invitationsListeners =
new ArrayList<InvitationListener>();
private XMPPConnection connection;
private PacketFilter invitationFilter;
private PacketListener invitationPacketListener;
/**
* Returns a new or existing InvitationsMonitor for a given connection.
*
* @param conn the connection to monitor for room invitations.
* @return a new or existing InvitationsMonitor for a given connection.
*/
public static InvitationsMonitor getInvitationsMonitor(XMPPConnection conn) {
synchronized (monitors) {
if (!monitors.containsKey(conn)) {
// We need to use a WeakReference because the monitor references the
// connection and this could prevent the GC from collecting the monitor
// when no other object references the monitor
monitors.put(conn, new WeakReference<InvitationsMonitor>(new InvitationsMonitor(conn)));
}
// Return the InvitationsMonitor that monitors the connection
return monitors.get(conn).get();
}
}
/**
* Creates a new InvitationsMonitor that will monitor invitations received
* on a given connection.
*
* @param connection the connection to monitor for possible room invitations
*/
private InvitationsMonitor(XMPPConnection connection) {
this.connection = connection;
}
/**
* Adds a listener to invitation notifications. The listener will be fired anytime
* an invitation is received.<p>
*
* If this is the first monitor's listener then the monitor will be initialized in
* order to start listening to room invitations.
*
* @param listener an invitation listener.
*/
public void addInvitationListener(InvitationListener listener) {
synchronized (invitationsListeners) {
// If this is the first monitor's listener then initialize the listeners
// on the connection to detect room invitations
if (invitationsListeners.size() == 0) {
init();
}
if (!invitationsListeners.contains(listener)) {
invitationsListeners.add(listener);
}
}
}
/**
* Removes a listener to invitation notifications. The listener will be fired anytime
* an invitation is received.<p>
*
* If there are no more listeners to notifiy for room invitations then the monitor will
* be stopped. As soon as a new listener is added to the monitor, the monitor will resume
* monitoring the connection for new room invitations.
*
* @param listener an invitation listener.
*/
public void removeInvitationListener(InvitationListener listener) {
synchronized (invitationsListeners) {
if (invitationsListeners.contains(listener)) {
invitationsListeners.remove(listener);
}
// If there are no more listeners to notifiy for room invitations
// then proceed to cancel/release this monitor
if (invitationsListeners.size() == 0) {
cancel();
}
}
}
/**
* Fires invitation listeners.
*/
private void fireInvitationListeners(String room, String inviter, String reason, String password,
Message message) {
InvitationListener[] listeners;
synchronized (invitationsListeners) {
listeners = new InvitationListener[invitationsListeners.size()];
invitationsListeners.toArray(listeners);
}
for (InvitationListener listener : listeners) {
listener.invitationReceived(connection, room, inviter, reason, password, message);
}
}
public void connectionClosed() {
cancel();
}
public void connectionClosedOnError(Exception e) {
cancel();
}
public void reconnectingIn(int seconds) {
// ignore
}
public void reconectionSuccessful() {
// ignore
}
public void reconnectionFailed(Exception e) {
// ignore
}
/**
* Initializes the listeners to detect received room invitations and to detect when the
* connection gets closed. As soon as a room invitation is received the invitations
* listeners will be fired. When the connection gets closed the monitor will remove
* his listeners on the connection.
*/
private void init() {
// Listens for all messages that include a MUCUser extension and fire the invitation
// listeners if the message includes an invitation.
invitationFilter =
new PacketExtensionFilter("x", "http://jabber.org/protocol/muc#user");
invitationPacketListener = new PacketListener() {
public void processPacket(Packet packet) {
// Get the MUCUser extension
MUCUser mucUser =
(MUCUser) packet.getExtension("x", "http://jabber.org/protocol/muc#user");
// Check if the MUCUser extension includes an invitation
if (mucUser.getInvite() != null &&
((Message) packet).getType() != Message.Type.ERROR) {
// Fire event for invitation listeners
fireInvitationListeners(packet.getFrom(), mucUser.getInvite().getFrom(),
mucUser.getInvite().getReason(), mucUser.getPassword(), (Message) packet);
}
}
};
connection.addPacketListener(invitationPacketListener, invitationFilter);
// Add a listener to detect when the connection gets closed in order to
// cancel/release this monitor
connection.addConnectionListener(this);
}
/**
* Cancels all the listeners that this InvitationsMonitor has added to the connection.
*/
private void cancel() {
connection.removePacketListener(invitationPacketListener);
connection.removeConnectionListener(this);
}
}
}
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