Java tutorial
/** * $RCSfile: ,v $ * $Revision: 1.0 $ * $Date: 2005/05/25 04:20:03 $ * * Copyright (C) 1999-2008 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.openfire.plugin.spark.manager; import java.io.File; import org.dom4j.Element; import org.jivesoftware.openfire.XMPPServer; import org.jivesoftware.util.JiveGlobals; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.xmpp.component.Component; import org.xmpp.component.ComponentException; import org.xmpp.component.ComponentManager; import org.xmpp.component.ComponentManagerFactory; import org.xmpp.packet.IQ; import org.xmpp.packet.JID; import org.xmpp.packet.Packet; import org.xmpp.packet.PacketError; /** * Provides support for server administrators to control the global updating of the Jive Spark IM client. * (<a href="http://www.igniterealtime.org/projects/spark/index.jsp">Spark</a>).<p> * <p/> * The basic functionality is to query the server for the latest client * version and return that information. The version comparison is left to * the client itself, so as to keep the SparkVersionManager simple. * <p/> * * @author Derek DeMoro */ public class SparkVersionManager implements Component { private static final Logger Log = LoggerFactory.getLogger(SparkVersionManager.class); private ComponentManager componentManager; public static String SERVICE_NAME = "updater"; /** * Empty constructor for initializing. */ public SparkVersionManager() { // Initialize ComponentManager componentManager = ComponentManagerFactory.getComponentManager(); } /** * Returns the name of this plugin. * * @return the name of this plugin. */ public String getName() { return "Spark Version Manager"; } /** * Returns a brief description of this plugin. * * @return a brief description of this plugin. */ public String getDescription() { return "Allow admins to control the updating of the Spark IM Client."; } public void processPacket(Packet packet) { if (packet instanceof IQ) { IQ iqPacket = (IQ) packet; if (IQ.Type.get == iqPacket.getType()) { Element childElement = (iqPacket).getChildElement(); String namespace = null; if (childElement != null) { namespace = childElement.getNamespaceURI(); } // Handle any disco info requests. if ("http://jabber.org/protocol/disco#info".equals(namespace)) { handleDiscoInfo(iqPacket); } // Handle any disco item requests. else if ("http://jabber.org/protocol/disco#items".equals(namespace)) { handleDiscoItems(iqPacket); } // Handle a jabber spark request. else if ("jabber:iq:spark".equals(namespace)) { handleSparkIQ(iqPacket); } } else if (IQ.Type.error == iqPacket.getType() || IQ.Type.result == iqPacket.getType()) { // Ignore these packets } else { // Return error since this is an unknown service request IQ reply = IQ.createResultIQ(iqPacket); reply.setError(PacketError.Condition.service_unavailable); sendPacket(reply); } } } private void handleSparkIQ(IQ packet) { IQ reply; Element iq = packet.getChildElement(); // Define default values String os = iq.element("os").getText(); reply = IQ.createResultIQ(packet); // Handle Invalid Requests if (os == null || (!os.equals("windows") && !os.equals("mac") && !os.equals("linux"))) { reply.setChildElement(packet.getChildElement().createCopy()); reply.setError(new PacketError(PacketError.Condition.not_acceptable)); sendPacket(reply); return; } Element sparkElement = reply.setChildElement("query", "jabber:iq:spark"); String client = null; // Handle Windows clients if (os.equals("windows")) { client = JiveGlobals.getProperty("spark.windows.client"); } // Handle Mac clients. else if (os.equals("mac")) { client = JiveGlobals.getProperty("spark.mac.client"); } // Handle Linux Client. else if (os.equals("linux")) { client = JiveGlobals.getProperty("spark.linux.client"); } if (client != null) { int index = client.indexOf("_"); // Add version number String versionNumber = client.substring(index + 1); int indexOfPeriod = versionNumber.indexOf("."); versionNumber = versionNumber.substring(0, indexOfPeriod); versionNumber = versionNumber.replaceAll("_", "."); sparkElement.addElement("version").setText(versionNumber); // Add updated time. File clientFile = new File(JiveGlobals.getHomeDirectory(), "enterprise/spark/" + client); if (!clientFile.exists()) { reply.setChildElement(packet.getChildElement().createCopy()); reply.setError(new PacketError(PacketError.Condition.item_not_found)); sendPacket(reply); return; } long updatedTime = clientFile.lastModified(); sparkElement.addElement("updatedTime").setText(Long.toString(updatedTime)); // Add download url String downloadURL = JiveGlobals.getProperty("spark.client.downloadURL"); String server = XMPPServer.getInstance().getServerInfo().getXMPPDomain(); downloadURL = downloadURL.replace("127.0.0.1", server); sparkElement.addElement("downloadURL").setText(downloadURL + "?client=" + client); String displayMessage = JiveGlobals.getProperty("spark.client.displayMessage"); if (displayMessage != null && displayMessage.trim().length() > 0) { sparkElement.addElement("displayMessage").setText(displayMessage); } } else { reply.setChildElement(packet.getChildElement().createCopy()); reply.setError(new PacketError(PacketError.Condition.item_not_found)); sendPacket(reply); return; } sendPacket(reply); } private void handleDiscoItems(IQ packet) { IQ replyPacket = IQ.createResultIQ(packet); replyPacket.setChildElement("query", "http://jabber.org/protocol/disco#items"); sendPacket(replyPacket); } private void handleDiscoInfo(IQ packet) { IQ replyPacket = IQ.createResultIQ(packet); Element responseElement = replyPacket.setChildElement("query", "http://jabber.org/protocol/disco#info"); Element identity = responseElement.addElement("identity"); identity.addAttribute("category", "updater"); identity.addAttribute("type", "text"); identity.addAttribute("name", "Spark Updater"); responseElement.addElement("feature").addAttribute("var", "jabber:iq:updater"); sendPacket(replyPacket); } public void initialize(JID jid, ComponentManager componentManager) throws ComponentException { // Do nothing. } public void start() { // Do nothing } public void shutdown() { // Do nothing. } private void sendPacket(Packet packet) { try { componentManager.sendPacket(this, packet); } catch (ComponentException e) { Log.error(e.getMessage(), e); } } }