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/* |
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* i-scream central monitoring system |
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* http://www.i-scream.org |
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* Copyright (C) 2000-2002 i-scream |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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*/ |
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|
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//---PACKAGE DECLARATION--- |
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package uk.ac.ukc.iscream.clientinterface; |
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package uk.org.iscream.cms.server.clientinterface; |
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//---IMPORTS--- |
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import uk.ac.ukc.iscream.util.*; |
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import uk.ac.ukc.iscream.core.*; |
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import uk.ac.ukc.iscream.componentmanager.*; |
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import uk.org.iscream.cms.util.*; |
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import uk.org.iscream.cms.server.core.*; |
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import uk.org.iscream.cms.server.componentmanager.*; |
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import java.io.IOException; |
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import java.net.Socket; |
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import java.net.ServerSocket; |
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import java.net.UnknownHostException; |
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/** |
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* Listener for incoming clients. |
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* Listener for incoming TCP clients, and startup a Handler |
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* a connection is received. |
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* |
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* @author $Author$ |
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* @version $Id$ |
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*/ |
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public final String REVISION = "$Revision$"; |
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public static final int DEFPORT = 4510; |
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//---STATIC METHODS--- |
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//---CONSTRUCTORS--- |
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/** |
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* Constructs a new TCPClientListener |
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* |
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* @param port The port that the server will listen on. |
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* @param queue A Queue to utilise |
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* @param packetSorter A reference to the PacketSorter |
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*/ |
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public TCPClientListener(int port, Queue queue) { |
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_port = port; |
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_queue = queue; |
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public TCPClientListener(PacketSorter packetSorter) { |
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// set the Thread name |
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setName("clientinterface.TCPClientListener"); |
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_packetSorter = packetSorter; |
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_logger.write(toString(), Logger.SYSINIT, "started"); |
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} |
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* will remain in here until such a point as something goes |
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* wrong with the listening. After initially setting up the |
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* ServerSocket we go round a while loop receiving connections |
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* and then passing them off to other processes to deal with. |
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* and then passing them off to handler processes to deal with. |
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*/ |
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public void run(){ |
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// setup an empty ACL defaulting to ALLOW |
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ACL acl = new ACL(ACL.ALLOW); |
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|
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// get our port |
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int portNum; |
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try { |
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String port = ConfigurationProxy.getInstance().getProperty("ClientInterface", "ClientInterface.listenPort"); |
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portNum = Integer.parseInt(port); |
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} catch (PropertyNotFoundException e) { |
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portNum = DEFPORT; |
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_logger.write(toString(), Logger.WARNING, "Configuration not found, using default of "+portNum+" : "+e); |
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} catch (NumberFormatException e) { |
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portNum = DEFPORT; |
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_logger.write(toString(), Logger.WARNING, "Bad configuration found, using default of "+portNum+" : "+e); |
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} |
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ServerSocket listenPort=null; |
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// We use this boolean so we can break out of the while loop if we want |
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boolean run = true; |
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try{ |
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// Setup the ServerSocket so that clients can connect |
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listenPort = new ServerSocket(_port); |
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listenPort = new ACLServerSocket(acl, portNum); |
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} |
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catch(IOException e){ |
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} |
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+"port "+listenPort.getLocalPort()); |
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} |
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// Loop round constantly until we decide to stop |
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ConfigurationProxy cp = ConfigurationProxy.getInstance(); |
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String stringACL = ""; |
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String newStringACL = ""; |
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while(run){ |
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// get hold of the ACL in the configuration |
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try { |
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newStringACL = cp.getProperty("ClientInterface", "ClientInterface.TCPControlChannelACL"); |
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} |
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catch(PropertyNotFoundException e) { |
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// if we can't find it, we'll just use a null ACL |
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newStringACL = ""; |
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_logger.write(toString(), Logger.WARNING, "No ACL found for ClientInterface (control channel listener), using empty ACL instead: " + e); |
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} |
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// check to see if the ACL has changed |
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if(!newStringACL.equals(stringACL)) { |
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_logger.write(toString(), Logger.SYSMSG, "Reloading Access Control List"); |
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// clear the ACL |
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acl.clear(); |
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// set the default to something sane |
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acl.setDefaultMode(ACL.ALLOW); |
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// add the new ACL (this may change the default) |
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acl.add(newStringACL); |
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stringACL = newStringACL; |
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} |
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Socket hostSocket=null; |
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try{ |
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_logger.write(toString(), Logger.SYSMSG, "Waiting for Connection"); |
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// If we've stopped on the line above we won't want to try this ! |
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if(run){ |
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try { |
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// Setup the HostInit so it can carry on communications with the host |
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TCPControlHandler ctl = new TCPControlHandler(hostSocket, _queue); |
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// start up a ControlHandler to chat to the new Client |
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TCPControlHandler ctl = new TCPControlHandler(hostSocket, _packetSorter); |
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ctl.start(); |
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} catch (IOException e) { |
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_logger.write(toString(), Logger.ERROR, e.toString()); |
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* Overrides the {@link java.lang.Object#toString() Object.toString()} |
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* method to provide clean logging (every class should have this). |
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* |
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* This uses the uk.ac.ukc.iscream.util.NameFormat class |
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* This uses the uk.org.iscream.cms.util.NameFormat class |
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* to format the toString() |
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* |
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* @return the name of this class and its CVS revision |
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* system logger that is being used. |
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*/ |
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private Logger _logger = ReferenceManager.getInstance().getLogger(); |
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– |
|
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/** |
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* The port on which the server should listen. |
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*/ |
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private int _port; |
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|
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/** |
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* A reference to the Queue. |
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* A reference to the PacketSorter. |
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*/ |
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private Queue _queue; |
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private PacketSorter _packetSorter; |
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|
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//---STATIC ATTRIBUTES--- |
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} |
