001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/portal/standard/context/control/ContextLoadListener.java $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036
037 package org.deegree.portal.standard.context.control;
038
039 import java.io.IOException;
040 import java.util.List;
041
042 import org.deegree.enterprise.control.FormEvent;
043 import org.deegree.enterprise.control.RPCMember;
044 import org.deegree.enterprise.control.RPCMethodCall;
045 import org.deegree.enterprise.control.RPCParameter;
046 import org.deegree.enterprise.control.RPCStruct;
047 import org.deegree.enterprise.control.RPCUtils;
048 import org.deegree.enterprise.control.RPCWebEvent;
049 import org.deegree.framework.log.ILogger;
050 import org.deegree.framework.log.LoggerFactory;
051 import org.deegree.i18n.Messages;
052 import org.deegree.portal.PortalException;
053
054 /**
055 * This listener generates a list of availavle ViewContexts. The only parameter passed is the user name. Currently only
056 * .xml files are being accepted as contexts and it's also also assumed that those are available under
057 * WEB-INF/xml/users/some_user user directories
058 *
059 * @author <a href="mailto:taddei@lat-lon.de">Ugo Taddei</a>
060 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
061 * @author last edited by: $Author: jmays $
062 *
063 * @version $Revision: 21440 $, $Date: 2009-12-14 16:46:38 +0100 (Mo, 14 Dez 2009) $
064 */
065 public class ContextLoadListener extends AbstractContextListener {
066
067 private static final ILogger LOG = LoggerFactory.getLogger( ContextLoadListener.class );
068
069 /*
070 * (non-Javadoc)
071 *
072 * @see org.deegree.enterprise.control.WebListener#actionPerformed(org.deegree.enterprise.control.FormEvent)
073 */
074 @Override
075 public void actionPerformed( FormEvent event ) {
076
077 RPCWebEvent rpc = (RPCWebEvent) event;
078 try {
079 validate( rpc );
080 } catch ( PortalException e ) {
081 LOG.logError( e.getMessage(), e );
082 gotoErrorPage( Messages.getMessage( "IGEO_STD_CNTXT_INVALID_RPC", "ContextLoad", e.getMessage() ) );
083 return;
084 }
085
086 String userName = extractUserName( rpc );
087 List<String> contextList = getContextList( userName );
088 String userStartContext;
089 try {
090 userStartContext = getUsersStartContext( userName );
091 } catch ( IOException e ) {
092 LOG.logError( e.getMessage(), e );
093 gotoErrorPage( Messages.getMessage( "IGEO_STD_SEC_ERROR_STARTCONTEXT" ) );
094 return;
095 }
096
097 getRequest().setAttribute( "CONTEXT_LIST", contextList );
098 getRequest().setAttribute( "USER", userName );
099 getRequest().setAttribute( "STARTCONTEXT", userStartContext );
100 }
101
102 /**
103 * reads the session ID from the passed RPC and gets the assigned user name from a authentification service
104 *
105 * @param event
106 * @return the user name
107 */
108 private String extractUserName( RPCWebEvent event ) {
109 RPCMethodCall mc = event.getRPCMethodCall();
110 RPCParameter[] pars = mc.getParameters();
111 RPCStruct struct = (RPCStruct) pars[0].getValue();
112
113 // get map context value
114 String name = "default";
115 try {
116 name = getUserName( RPCUtils.getRpcPropertyAsString( struct, "sessionID" ) );
117 if ( name == null ) {
118 name = "default";
119 }
120 } catch ( Exception e ) {
121 }
122 return name;
123 }
124
125 /**
126 * validates if the passed RPC call containes the required variables
127 *
128 * @param rpc
129 * @throws PortalException
130 */
131 private void validate( RPCWebEvent rpc )
132 throws PortalException {
133 RPCMethodCall mc = rpc.getRPCMethodCall();
134 RPCParameter param = mc.getParameters()[0];
135 RPCStruct struct = (RPCStruct) param.getValue();
136 RPCMember sessionID = struct.getMember( "sessionID" );
137 if ( sessionID == null ) {
138 throw new PortalException( Messages.getMessage( "IGEO_STD_CNTXT_MISSING_PARAM", "sessionID", "ContextLoad" ) );
139 }
140 }
141
142 }