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531 lines
No EOL
20 KiB
Java
531 lines
No EOL
20 KiB
Java
/**
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* $RCSfile$
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* $Revision$
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* $Date$
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*
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* Copyright (C) 2002-2003 Jive Software. All rights reserved.
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* ====================================================================
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* The Jive Software License (based on Apache Software License, Version 1.1)
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes software developed by
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* Jive Software (http://www.jivesoftware.com)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Smack" and "Jive Software" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please
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* contact webmaster@jivesoftware.com.
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*
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* 5. Products derived from this software may not be called "Smack",
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* nor may "Smack" appear in their name, without prior written
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* permission of Jive Software.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL JIVE SOFTWARE OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*/
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package org.jivesoftware.smack;
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import org.jivesoftware.smack.packet.*;
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import org.jivesoftware.smack.filter.*;
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import org.jivesoftware.smack.util.StringUtils;
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import java.util.*;
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/**
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* Represents a user's roster, which is the collection of users a person receives
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* presence updates for. Roster items are categorized into groups for easier management.<p>
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*
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* Others users may attempt to subscribe to this user using a subscription request. Three
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* modes are supported for handling these requests: <ul>
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* <li> SUBSCRIPTION_ACCEPT_ALL -- accept all subscription requests.
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* <li> SUBCRIPTION_REJECT_ALL -- reject all subscription requests.
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* <li> SUBSCRIPTION_MANUAL -- manually process all subscription requests. </ul>
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*
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* All presence subscription requests are automatically approved to this client
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* are automatically approved. This logic will be updated in the future to allow for
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* pluggable behavior.
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*
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* @see XMPPConnection#getRoster()
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* @author Matt Tucker
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*/
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public class Roster {
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/**
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* Automatically accept all subscription requests. This is the default mode
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* and is suitable for simple client. More complex client will likely wish to
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* handle subscription requests manually.
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*/
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public static final int SUBCRIPTION_ACCEPT_ALL = 0;
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/**
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* Automatically reject all subscription requests.
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*/
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public static final int SUBCRIPTION_REJECT_ALL = 1;
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/**
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* Subscription requests are ignored, which means they must be manually
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* processed by registering a listener for presence packets and then looking
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* for any presence requests that have the type Presence.Type.SUBSCRIBE.
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*/
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public static final int SUBSCRIPTION_MANUAL = 2;
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private XMPPConnection connection;
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private Map groups;
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private List entries;
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private List unfiledEntries;
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private List rosterListeners;
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private Map presenceMap;
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// The roster is marked as initialized when at least a single roster packet
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// has been recieved and processed.
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boolean rosterInitialized = false;
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private int subscriptionMode = SUBCRIPTION_ACCEPT_ALL;
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/**
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* Creates a new roster.
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*
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* @param connection an XMPP connection.
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*/
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Roster(final XMPPConnection connection) {
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this.connection = connection;
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groups = new Hashtable();
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unfiledEntries = new ArrayList();
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entries = new ArrayList();
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rosterListeners = new ArrayList();
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presenceMap = new HashMap();
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// Listen for any roster packets.
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PacketFilter rosterFilter = new PacketTypeFilter(RosterPacket.class);
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connection.addPacketListener(new RosterPacketListener(), rosterFilter);
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// Listen for any presence packets.
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PacketFilter presenceFilter = new PacketTypeFilter(Presence.class);
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connection.addPacketListener(new PresencePacketListener(), presenceFilter);
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}
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/**
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* Returns the subscription processing mode, which dictates what action
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* Smack will take when subscription requests from other users are made.
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*
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* @return the subscription mode.
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*/
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public int getSubscriptionMode() {
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return subscriptionMode;
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}
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/**
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* Sets the subscription processing mode, which dictates what action
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* Smack will take when subscription requests from other users are made.
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*
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* @param subscriptionMode the subscription mode.
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*/
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public void setSubscriptionMode(int subscriptionMode) {
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if (subscriptionMode != SUBCRIPTION_ACCEPT_ALL &&
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subscriptionMode != SUBCRIPTION_REJECT_ALL &&
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subscriptionMode != SUBSCRIPTION_MANUAL)
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{
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throw new IllegalArgumentException("Invalid mode.");
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}
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this.subscriptionMode = subscriptionMode;
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}
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/**
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* Reloads the entire roster from the server. This is an asynchronous operation,
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* which means the method will return immediately, and the roster will be
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* reloaded at a later point when the server responds to the reload request.
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*/
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public void reload() {
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connection.sendPacket(new RosterPacket());
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}
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/**
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* Adds a listener to this roster. The listener will be fired anytime one or more
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* changes to the roster are pushed from the server.
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*
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* @param rosterListener a roster listener.
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*/
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public void addRosterListener(RosterListener rosterListener) {
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synchronized (rosterListeners) {
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if (!rosterListeners.contains(rosterListener)) {
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rosterListeners.add(rosterListener);
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}
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}
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}
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/**
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* Removes a listener from this roster. The listener will be fired anytime one or more
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* changes to the roster are pushed from the server.
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*
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* @param rosterListener a roster listener.
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*/
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public void removeRosterListener(RosterListener rosterListener) {
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synchronized (rosterListeners) {
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rosterListeners.remove(rosterListener);
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}
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}
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/**
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* Creates a new group.<p>
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*
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* Note: you must add at least one entry to the group for the group to be kept
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* after a logout/login. This is due to the way that XMPP stores group information.
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*
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* @param name the name of the group.
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* @return a new group.
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*/
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public RosterGroup createGroup(String name) {
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synchronized (groups) {
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if (groups.containsKey(name)) {
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throw new IllegalArgumentException("Group with name " + name + " alread exists.");
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}
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RosterGroup group = new RosterGroup(name, connection);
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groups.put(name, group);
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return group;
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}
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}
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/**
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* Cretaes a new roster entry and prsence subscription. The server will asynchronously
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* update the roster with the subscription status.
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*
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* @param user the user.
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* @param name the nickname of the user.
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* @param groups the list of group names the entry will belong to, or <tt>null</tt> if the
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* the roster entry won't belong to a group.
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*/
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public void createEntry(String user, String name, String [] groups) throws XMPPException {
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// Create and send roster entry creation packet.
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RosterPacket rosterPacket = new RosterPacket();
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rosterPacket.setType(IQ.Type.SET);
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RosterPacket.Item item = new RosterPacket.Item(user, name);
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if (groups != null) {
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for (int i=0; i<groups.length; i++) {
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item.addGroupName(groups[i]);
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}
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}
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rosterPacket.addRosterItem(item);
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// Wait up to 5 seconds for a reply from the server.
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PacketCollector collector = connection.createPacketCollector(
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new PacketIDFilter(rosterPacket.getPacketID()));
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connection.sendPacket(rosterPacket);
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IQ response = (IQ)collector.nextResult(5000);
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if (response == null) {
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throw new XMPPException("No response from the server.");
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}
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// If the server replied with an error, throw an exception.
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else if (response.getType() == IQ.Type.ERROR) {
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throw new XMPPException(response.getError());
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}
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collector.cancel();
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// Create a presence subscription packet and send.
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Presence presencePacket = new Presence(Presence.Type.SUBSCRIBE);
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presencePacket.setTo(user);
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connection.sendPacket(presencePacket);
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}
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/**
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* Returns a count of the entries in the roster.
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*
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* @return the number of entries in the roster.
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*/
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public int getEntryCount() {
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HashMap entryMap = new HashMap();
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// Loop through all roster groups.
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for (Iterator groups = getGroups(); groups.hasNext(); ) {
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RosterGroup rosterGroup = (RosterGroup) groups.next();
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for (Iterator entries = rosterGroup.getEntries(); entries.hasNext(); ) {
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entryMap.put(entries.next(), "");
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}
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}
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synchronized (unfiledEntries) {
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return entryMap.size() + unfiledEntries.size();
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}
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}
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/**
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* Returns all entries in the roster, including entries that don't belong to
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* any groups.
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*
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* @return all entries in the roster.
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*/
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public Iterator getEntries() {
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ArrayList allEntries = new ArrayList();
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// Loop through all roster groups and add their entries to the answer
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for (Iterator groups = getGroups(); groups.hasNext(); ) {
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RosterGroup rosterGroup = (RosterGroup) groups.next();
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for (Iterator entries = rosterGroup.getEntries(); entries.hasNext(); ) {
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RosterEntry entry = (RosterEntry)entries.next();
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if (!allEntries.contains(entry)) {
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allEntries.add(entry);
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}
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}
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}
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// Add the roster unfiled entries to the answer
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synchronized (unfiledEntries) {
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allEntries.addAll(unfiledEntries);
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}
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return allEntries.iterator();
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}
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/**
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* Returns a count of the unfiled entries in the roster. An unfiled entry is
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* an entry that doesn't belong to any groups.
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*
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* @return the number of unfiled entries in the roster.
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*/
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public int getUnfiledEntryCount() {
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synchronized (unfiledEntries) {
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return unfiledEntries.size();
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}
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}
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/**
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* Returns an Iterator for the unfiled roster entries. An unfiled entry is
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* an entry that doesn't belong to any groups.
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*
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* @return an iterator the unfiled roster entries.
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*/
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public Iterator getUnfiledEntries() {
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synchronized (unfiledEntries) {
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return Collections.unmodifiableList(new ArrayList(unfiledEntries)).iterator();
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}
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}
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/**
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* Returns the roster group with the specified name, or <tt>null</tt> if the
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* group doesn't exist.
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*
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* @param name the name of the group.
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* @return the roster group with the specified name.
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*/
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public RosterGroup getGroup(String name) {
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synchronized (groups) {
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return (RosterGroup)groups.get(name);
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}
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}
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/**
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* Returns the number of the groups in the roster.
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*
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* @return the number of groups in the roster.
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*/
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public int getGroupCount() {
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synchronized (groups) {
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return groups.size();
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}
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}
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/**
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* Returns an iterator the for all the roster groups.
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*
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* @return an iterator for all roster groups.
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*/
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public Iterator getGroups() {
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synchronized (groups) {
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List groupsList = Collections.unmodifiableList(new ArrayList(groups.values()));
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return groupsList.iterator();
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}
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}
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/**
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* Returns the presence info for a particular user, or <tt>null</tt> if there is
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* no presence information.
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*
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* @param user a fully qualified xmpp ID, e.g. jdoe@example.com
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* @return the user's presence.
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*/
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public Presence getPresence(String user) {
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String key = StringUtils.parseName(user) + "@" + StringUtils.parseServer(user);
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return (Presence)presenceMap.get(key);
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}
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/**
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* Fires roster changed event to roster listeners.
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*/
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private void fireRosterChangedEvent() {
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RosterListener [] listeners = null;
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synchronized (rosterListeners) {
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listeners = new RosterListener[rosterListeners.size()];
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rosterListeners.toArray(listeners);
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}
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for (int i=0; i<listeners.length; i++) {
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listeners[i].rosterModified();
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}
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}
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/**
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* Fires roster presence changed event to roster listeners.
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*/
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private void fireRosterPresenceEvent(String user) {
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RosterListener [] listeners = null;
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synchronized (rosterListeners) {
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listeners = new RosterListener[rosterListeners.size()];
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rosterListeners.toArray(listeners);
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}
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for (int i=0; i<listeners.length; i++) {
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listeners[i].presenceChanged(user);
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}
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}
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/**
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* Listens for all presence packets and processes them.
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*/
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private class PresencePacketListener implements PacketListener {
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public void processPacket(Packet packet) {
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Presence presence = (Presence)packet;
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String from = presence.getFrom();
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String key = StringUtils.parseBareAddress(from);
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// If an "available" packet, add it to the presence map. This means that for
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// a particular user, we'll only ever have a single presence packet saved.
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// Because this ignores resources, this is not an ideal solution, so will
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// have to be revisited.
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if (presence.getType() == Presence.Type.AVAILABLE) {
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presenceMap.put(key, presence);
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// If the user is in the roster, fire an event.
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synchronized (entries) {
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for (Iterator i=entries.iterator(); i.hasNext(); ) {
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RosterEntry entry = (RosterEntry)i.next();
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if (entry.getUser().equals(key)) {
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fireRosterPresenceEvent(key);
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}
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}
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}
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}
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// If an "unavailable" packet, remove any entries in the presence map.
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else if (presence.getType() == Presence.Type.UNAVAILABLE) {
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presenceMap.remove(key);
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// If the user is in the roster, fire an event.
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synchronized (entries) {
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for (Iterator i=entries.iterator(); i.hasNext(); ) {
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RosterEntry entry = (RosterEntry)i.next();
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if (entry.getUser().equals(key)) {
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fireRosterPresenceEvent(key);
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}
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}
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}
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}
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else if (presence.getType() == Presence.Type.SUBSCRIBE) {
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if (subscriptionMode == SUBCRIPTION_ACCEPT_ALL) {
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// Accept all subscription requests.
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Presence response = new Presence(Presence.Type.SUBSCRIBED);
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response.setTo(presence.getFrom());
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connection.sendPacket(response);
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}
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else if (subscriptionMode == SUBCRIPTION_REJECT_ALL) {
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// Reject all subscription requests.
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Presence response = new Presence(Presence.Type.UNSUBSCRIBED);
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response.setTo(presence.getFrom());
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connection.sendPacket(response);
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}
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// Otherwise, in manual mode so ignore.
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}
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}
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}
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/**
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* Listens for all roster packets and processes them.
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*/
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private class RosterPacketListener implements PacketListener {
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public void processPacket(Packet packet) {
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RosterPacket rosterPacket = (RosterPacket)packet;
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for (Iterator i=rosterPacket.getRosterItems(); i.hasNext(); ) {
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RosterPacket.Item item = (RosterPacket.Item)i.next();
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RosterEntry entry = new RosterEntry(item.getUser(), item.getName(),
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item.getItemType(), connection);
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// Make sure the entry is in the entry list.
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if (!entries.contains(entry)) {
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entries.add(entry);
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}
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// If the roster entry belongs to any groups, remove it from the
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// list of unfiled entries.
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if (item.getGroupNames().hasNext()) {
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synchronized (unfiledEntries) {
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unfiledEntries.remove(entry);
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}
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}
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// Otherwise add it to the list of unfiled entries.
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else {
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synchronized (unfiledEntries) {
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if (!unfiledEntries.contains(entry)) {
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unfiledEntries.add(entry);
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}
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}
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}
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// Find the list of groups that the user currently belongs to.
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List currentGroupNames = new ArrayList();
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for (Iterator j = entry.getGroups(); j.hasNext(); ) {
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RosterGroup group = (RosterGroup)j.next();
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currentGroupNames.add(group.getName());
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}
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// Create the new list of groups the user belongs to.
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List newGroupNames = new ArrayList();
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for (Iterator k = item.getGroupNames(); k.hasNext(); ) {
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String groupName = (String)k.next();
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// Add the group name to the list.
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newGroupNames.add(groupName);
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// Add the entry to the group.
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RosterGroup group = getGroup(groupName);
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if (group == null) {
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group = createGroup(groupName);
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groups.put(groupName, group);
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}
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// Add the entry.
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group.addEntryLocal(entry);
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}
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// We have the list of old and new group names. We now need to
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// remove the entry from the all the groups it may no longer belong
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// to. We do this by subracting the new group set from the old.
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for (int m=0; m<newGroupNames.size(); m++) {
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currentGroupNames.remove(newGroupNames.get(m));
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}
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// Loop through any groups that remain and remove the entries.
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for (int n=0; n<currentGroupNames.size(); n++) {
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String groupName = (String)currentGroupNames.get(n);
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RosterGroup group = getGroup(groupName);
|
|
group.removeEntryLocal(entry);
|
|
if (group.getEntryCount() == 0) {
|
|
synchronized (groups) {
|
|
groups.remove(groupName);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Fire event for roster listeners.
|
|
fireRosterChangedEvent();
|
|
|
|
// Mark the roster as initialized.
|
|
rosterInitialized = true;
|
|
}
|
|
}
|
|
} |