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git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2141 b35dd754-fafc-0310-a699-88a17e54d16e
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Gaston Dombiak 2003-10-13 23:05:06 +00:00 committed by gdombiak
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331
source/org/jivesoftware/smackx/ServiceDiscoveryManager.java Normal file
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/**
* $RCSfile$
* $Revision$
* $Date$
*
* Copyright (C) 2002-2003 Jive Software. All rights reserved.
* ====================================================================
* The Jive Software License (based on Apache Software License, Version 1.1)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by
* Jive Software (http://www.jivesoftware.com)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Smack" and "Jive Software" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please
* contact webmaster@jivesoftware.com.
*
* 5. Products derived from this software may not be called "Smack",
* nor may "Smack" appear in their name, without prior written
* permission of Jive Software.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL JIVE SOFTWARE OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*/
package org.jivesoftware.smackx;
import java.util.*;
import org.jivesoftware.smack.*;
import org.jivesoftware.smack.filter.*;
import org.jivesoftware.smack.packet.*;
import org.jivesoftware.smackx.packet.*;
/**
* Manages discovery of services in XMPP entities. This class provides:
* <ol>
* <li>A registry of supported features in this XMPP entity.
* <li>Automatic response when this XMPP entity is queried for information.
* <li>Ability to discover items and information of remote XMPP entities.
* <li>Ability to publish publicly available items.
* </ol>
*
* @author Gaston Dombiak
*/
public class ServiceDiscoveryManager {
private static Map instances = new Hashtable();
private XMPPConnection connection;
private List features = new ArrayList();
/**
* Creates a new ServiceDiscoveryManager for a given XMPPConnection. This means that the
* service manager will respond to any service discovery request that the connection may
* receive.
*
* @param connection the connection to which a ServiceDiscoveryManager is going to be created
*/
public ServiceDiscoveryManager(XMPPConnection connection) {
this.connection = connection;
init();
}
/**
* Returns the ServiceDiscoveryManager instance associated with a given XMPPConnection.
*
* @param connection the connection used to look for the proper ServiceDiscoveryManager
* @return the ServiceDiscoveryManager associated with a given XMPPConnection
*/
public static ServiceDiscoveryManager getInstanceFor(XMPPConnection connection) {
return (ServiceDiscoveryManager)instances.get(connection);
}
/**
* Initializes the packet listeners of the connection that will answer to any
* service discovery request.
*/
private void init() {
// Register the new instance and associate it with the connection
instances.put(connection, this);
// Add a listener to the connection that removes the registered instance when
// the connection is closed
connection.addConnectionListener(new ConnectionListener() {
public void connectionClosed() {
// Unregister this instance since the connection has been closed
instances.remove(connection);
}
public void connectionClosedOnError(Exception e) {
// Unregister this instance since the connection has been closed
instances.remove(connection);
}
});
// Listen for disco#items requests and answer with an empty result
PacketFilter packetFilter = new PacketTypeFilter(DiscoverItems.class);
PacketListener packetListener = new PacketListener() {
public void processPacket(Packet packet) {
DiscoverItems discoverItems = (DiscoverItems) packet;
// Answer an empty result if the request is of the GET type
// Note: In a future version Smack will enable to have items defined in the client
if (discoverItems != null && discoverItems.getType() == IQ.Type.GET) {
DiscoverItems response = new DiscoverItems();
response.setType(IQ.Type.RESULT);
response.setTo(discoverItems.getFrom());
response.setPacketID(discoverItems.getPacketID());
connection.sendPacket(response);
}
}
};
connection.addPacketListener(packetListener, packetFilter);
// Listen for disco#info requests and answer the client's supported features
// To add a new feature as supported use the #addFeature message
packetFilter = new PacketTypeFilter(DiscoverInfo.class);
packetListener = new PacketListener() {
public void processPacket(Packet packet) {
DiscoverInfo discoverInfo = (DiscoverInfo) packet;
// Answer the client's supported features if the request is of the GET type
if (discoverInfo != null && discoverInfo.getType() == IQ.Type.GET) {
DiscoverInfo response = new DiscoverInfo();
response.setType(IQ.Type.RESULT);
response.setTo(discoverInfo.getFrom());
response.setPacketID(discoverInfo.getPacketID());
// Add the registered features to the response
synchronized (features) {
for (Iterator it=getFeatures(); it.hasNext();) {
response.addFeature((String) it.next());
}
}
connection.sendPacket(response);
}
}
};
connection.addPacketListener(packetListener, packetFilter);
}
/**
* Returns the supported features by this XMPP entity.
*
* @return an Iterator on the supported features by this XMPP entity
*/
public Iterator getFeatures() {
synchronized (features) {
return Collections.unmodifiableList(new ArrayList(features)).iterator();
}
}
/**
* Registers that a new feature is supported by this XMPP entity. When this client is
* queried for its information the registered features will be answered.
*
* @param feature the feature to register as supported
*/
public void addFeature(String feature) {
synchronized (features) {
features.add(feature);
}
}
/**
* Removes the specified feature from the supported features by this XMPP entity.
*
* @param feature the feature to remove from the supported features
*/
public void removeFeature(String feature) {
synchronized (features) {
features.remove(feature);
}
}
/**
* Returns true if the specified feature is registered in the ServiceDiscoveryManager.
*
* @param feature the feature to look for
* @return a boolean indicating if the specified featured is registered or not
*/
public boolean includesFeature(String feature) {
synchronized (features) {
return features.contains(feature);
}
}
/**
* Returns the discovered information of a given XMPP entity addressed by its JID.
*
* @param entityID the address of the XMPP entity
* @return the discovered information
* @throws XMPPException if the operation failed for some reason
*/
public DiscoverInfo discoverInfo(String entityID) throws XMPPException {
return discoverInfo(entityID, null);
}
/**
* Returns the discovered information of a given XMPP entity addressed by its JID and
* note attribute. Use this message only when trying to query information which is not
* directly addressable.
*
* @param entityID the address of the XMPP entity
* @param node the attribute that supplements the 'jid' attribute
* @return the discovered information
* @throws XMPPException if the operation failed for some reason
*/
public DiscoverInfo discoverInfo(String entityID, String node) throws XMPPException {
// Discover the entity's info
DiscoverInfo disco = new DiscoverInfo();
disco.setType(IQ.Type.GET);
disco.setTo(entityID);
disco.setNode(node);
// Create a packet collector to listen for a response.
PacketCollector collector =
connection.createPacketCollector(new PacketIDFilter(disco.getPacketID()));
connection.sendPacket(disco);
// Wait up to 5 seconds for a result.
IQ result = (IQ) collector.nextResult(5000);
if (result == null) {
throw new XMPPException("No response from the server.");
}
if (result.getType() == IQ.Type.ERROR) {
throw new XMPPException(result.getError());
}
return (DiscoverInfo) result;
}
/**
* Returns the discovered items of a given XMPP entity addressed by its JID.
*
* @param entityID the address of the XMPP entity
* @return the discovered information
* @throws XMPPException if the operation failed for some reason
*/
public DiscoverItems discoverItems(String entityID) throws XMPPException {
return discoverItems(entityID, null);
}
/**
* Returns the discovered items of a given XMPP entity addressed by its JID and
* note attribute. Use this message only when trying to query information which is not
* directly addressable.
*
* @param entityID the address of the XMPP entity
* @param node the attribute that supplements the 'jid' attribute
* @return the discovered items
* @throws XMPPException if the operation failed for some reason
*/
public DiscoverItems discoverItems(String entityID, String node) throws XMPPException {
// Discover the entity's items
DiscoverItems disco = new DiscoverItems();
disco.setType(IQ.Type.GET);
disco.setTo(entityID);
disco.setNode(node);
// Create a packet collector to listen for a response.
PacketCollector collector =
connection.createPacketCollector(new PacketIDFilter(disco.getPacketID()));
connection.sendPacket(disco);
// Wait up to 5 seconds for a result.
IQ result = (IQ) collector.nextResult(5000);
if (result == null) {
throw new XMPPException("No response from the server.");
}
if (result.getType() == IQ.Type.ERROR) {
throw new XMPPException(result.getError());
}
return (DiscoverItems) result;
}
/**
* Publishes new items to a parent entity. The item elements to publish MUST have at least
* a 'jid' attribute specifying the Entity ID of the item, and an action attribute which
* specifies the action being taken for that item. Possible action values are: "update" and
* "remove".
*
* @param entityID the address of the XMPP entity
* @param discoverItems the DiscoveryItems to publish
* @throws XMPPException if the operation failed for some reason
*/
public void publishItems(String entityID, DiscoverItems discoverItems) throws XMPPException {
discoverItems.setType(IQ.Type.SET);
discoverItems.setTo(entityID);
// Create a packet collector to listen for a response.
PacketCollector collector =
connection.createPacketCollector(new PacketIDFilter(discoverItems.getPacketID()));
connection.sendPacket(discoverItems);
// Wait up to 5 seconds for a result.
IQ result = (IQ) collector.nextResult(5000);
if (result == null) {
throw new XMPPException("No response from the server.");
}
if (result.getType() == IQ.Type.ERROR) {
throw new XMPPException(result.getError());
}
}
}

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source/org/jivesoftware/smackx/provider/DiscoverInfoProvider.java Normal file
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/**
* $RCSfile$
* $Revision$
* $Date$
*
* Copyright (C) 2002-2003 Jive Software. All rights reserved.
* ====================================================================
* The Jive Software License (based on Apache Software License, Version 1.1)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by
* Jive Software (http://www.jivesoftware.com)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Smack" and "Jive Software" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please
* contact webmaster@jivesoftware.com.
*
* 5. Products derived from this software may not be called "Smack",
* nor may "Smack" appear in their name, without prior written
* permission of Jive Software.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL JIVE SOFTWARE OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*/
package org.jivesoftware.smackx.provider;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.provider.IQProvider;
import org.jivesoftware.smackx.packet.DiscoverInfo;
import org.xmlpull.v1.XmlPullParser;
/**
* The DiscoverInfoProvider parses Service Discovery information packets.
*
* @author Gaston Dombiak
*/
public class DiscoverInfoProvider implements IQProvider {
public IQ parseIQ(XmlPullParser parser) throws Exception {
DiscoverInfo discoverInfo = new DiscoverInfo();
boolean done = false;
DiscoverInfo.Feature feature = null;
DiscoverInfo.Identity identity = null;
String category = "";
String name = "";
String type = "";
String variable = "";
discoverInfo.setNode(parser.getAttributeValue("", "node"));
while (!done) {
int eventType = parser.next();
if (eventType == XmlPullParser.START_TAG) {
if (parser.getName().equals("identity")) {
// Initialize the variables from the parsed XML
category = parser.getAttributeValue("", "category");
name = parser.getAttributeValue("", "name");
type = parser.getAttributeValue("", "type");
}
if (parser.getName().equals("feature")) {
// Initialize the variables from the parsed XML
variable = parser.getAttributeValue("", "var");
}
} else if (eventType == XmlPullParser.END_TAG) {
if (parser.getName().equals("identity")) {
// Create a new identity and add it to the discovered info.
identity = new DiscoverInfo.Identity(category, name);
identity.setType(type);
discoverInfo.addIdentity(identity);
}
if (parser.getName().equals("feature")) {
// Create a new feature and add it to the discovered info.
discoverInfo.addFeature(variable);
}
if (parser.getName().equals("query")) {
done = true;
}
}
}
return discoverInfo;
}
}

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source/org/jivesoftware/smackx/provider/DiscoverItemsProvider.java Normal file
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/**
* $RCSfile$
* $Revision$
* $Date$
*
* Copyright (C) 2002-2003 Jive Software. All rights reserved.
* ====================================================================
* The Jive Software License (based on Apache Software License, Version 1.1)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by
* Jive Software (http://www.jivesoftware.com)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Smack" and "Jive Software" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please
* contact webmaster@jivesoftware.com.
*
* 5. Products derived from this software may not be called "Smack",
* nor may "Smack" appear in their name, without prior written
* permission of Jive Software.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL JIVE SOFTWARE OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*/
package org.jivesoftware.smackx.provider;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.provider.IQProvider;
import org.jivesoftware.smackx.packet.*;
import org.xmlpull.v1.XmlPullParser;
/**
* The DiscoverInfoProvider parses Service Discovery items packets.
*
* @author Gaston Dombiak
*/
public class DiscoverItemsProvider implements IQProvider {
public IQ parseIQ(XmlPullParser parser) throws Exception {
DiscoverItems discoverItems = new DiscoverItems();
boolean done = false;
DiscoverItems.Item item = null;
String jid = "";
String name = "";
String action = "";
String node = "";
discoverItems.setNode(parser.getAttributeValue("", "node"));
while (!done) {
int eventType = parser.next();
if (eventType == XmlPullParser.START_TAG) {
if (parser.getName().equals("item")) {
// Initialize the variables from the parsed XML
jid = parser.getAttributeValue("", "jid");
name = parser.getAttributeValue("", "name");
node = parser.getAttributeValue("", "node");
action = parser.getAttributeValue("", "action");
}
} else if (eventType == XmlPullParser.END_TAG) {
if (parser.getName().equals("item")) {
// Create a new Item and add it to DiscoverItems.
item = new DiscoverItems.Item(jid);
item.setName(name);
item.setNode(node);
item.setAction(action);
discoverItems.addItem(item);
}
if (parser.getName().equals("query")) {
done = true;
}
}
}
return discoverItems;
}
}