001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_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.File;
040 import java.util.ArrayList;
041 import java.util.Arrays;
042 import java.util.List;
043
044 import org.deegree.enterprise.control.FormEvent;
045 import org.deegree.enterprise.control.RPCMember;
046 import org.deegree.enterprise.control.RPCMethodCall;
047 import org.deegree.enterprise.control.RPCParameter;
048 import org.deegree.enterprise.control.RPCStruct;
049 import org.deegree.enterprise.control.RPCUtils;
050 import org.deegree.enterprise.control.RPCWebEvent;
051 import org.deegree.framework.log.ILogger;
052 import org.deegree.framework.log.LoggerFactory;
053 import org.deegree.i18n.Messages;
054 import org.deegree.portal.PortalException;
055
056 /**
057 * This listener generates a list of availavle ViewContexts.
058 * The only parameter passed is the user name.Currently only
059 * .xml files are being accepted as contexts and it's also
060 * also assumed that those are available under
061 * WEB-INF/xml/users/some_user user directories
062 *
063 * @author <a href="mailto:taddei@lat-lon.de">Ugo Taddei</a>
064 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
065 * @author last edited by: $Author: mschneider $
066 *
067 * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
068 */
069 public class ContextLoadListener extends AbstractContextListener {
070
071 private static String userDir = "WEB-INF/conf/igeoportal/users/";
072 private static final ILogger LOG = LoggerFactory.getLogger( ContextLoadListener.class );
073
074 /* (non-Javadoc)
075 * @see org.deegree.enterprise.control.WebListener#actionPerformed(org.deegree.enterprise.control.FormEvent)
076 */
077 @Override
078 public void actionPerformed( FormEvent event ) {
079
080 RPCWebEvent rpc = (RPCWebEvent) event;
081 try {
082 validate( rpc );
083 } catch ( PortalException e ) {
084 LOG.logError( e.getMessage(), e );
085 gotoErrorPage( Messages.getMessage( "IGEO_STD_CNTXT_INVALID_RPC", "ContextLoad", e.getMessage() ) );
086 return;
087 }
088
089 String userName = extractUserName( rpc );
090 List contextList = getContextList( userName );
091
092 getRequest().setAttribute( "CONTEXT_LIST", contextList );
093 getRequest().setAttribute( "USER", userName );
094
095 }
096
097 /**
098 * reads the session ID from the passed RPC and gets the assigned
099 * user name from a authentification service
100 * @param event
101 * @return the user name
102 */
103 private String extractUserName( RPCWebEvent event ) {
104 RPCMethodCall mc = event.getRPCMethodCall();
105 RPCParameter[] pars = mc.getParameters();
106 RPCStruct struct = (RPCStruct) pars[0].getValue();
107
108 String name = "default";
109 try {
110 name = getUserName( RPCUtils.getRpcPropertyAsString( struct, "sessionID" ) );
111 if ( name == null ) {
112 name = "default";
113 }
114 } catch ( Exception e ) {
115 }
116 // get map context value
117 return name;
118 }
119
120 /**
121 * returns a list of all available context documents assigned to the
122 * passed user
123 *
124 * @param userName
125 * @return the list of available context documents
126 */
127 private List<String> getContextList( String userName ) {
128
129 String path2Dir = getHomePath() + userDir + userName;
130
131 File dir = new File( path2Dir );
132 File[] files = dir.listFiles();
133 List<String> contextList = new ArrayList<String>();
134 if ( files != null ) {
135 for ( int i = 0; i < files.length; i++ ) {
136 String s = files[i].getName();
137 if ( files[i].isFile() && s.endsWith( ".xml" ) ) {
138 contextList.add( files[i].getName() );
139 }
140 }
141 }
142 String[] list = contextList.toArray(new String[contextList.size()] );
143 Arrays.sort( list );
144 return new ArrayList<String>( Arrays.asList( list ) );
145 }
146
147 /**
148 * validates if the passed RPC call containes the required variables
149 *
150 * @param rpc
151 * @throws PortalException
152 */
153 private void validate( RPCWebEvent rpc )
154 throws PortalException {
155 RPCMethodCall mc = rpc.getRPCMethodCall();
156 RPCParameter param = mc.getParameters()[0];
157 RPCStruct struct = (RPCStruct) param.getValue();
158 RPCMember sessionID = struct.getMember( "sessionID" );
159 if ( sessionID == null ) {
160 throw new PortalException( Messages.getMessage( "IGEO_STD_CNTXT_MISSING_PARAM", "sessionID", "ContextLoad") );
161 }
162 }
163
164 }