001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/portal/standard/context/control/ContextDeleteListener.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 package org.deegree.portal.standard.context.control;
037
038 import java.io.File;
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.RPCWebEvent;
048 import org.deegree.framework.log.ILogger;
049 import org.deegree.framework.log.LoggerFactory;
050 import org.deegree.i18n.Messages;
051 import org.deegree.portal.PortalException;
052
053 /**
054 * Listener class that enables deleting a named conetxt
055 *
056 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
057 * @author last edited by: $Author: jmays $
058 *
059 * @version $Revision: 21440 $, $Date: 2009-12-14 16:46:38 +0100 (Mo, 14. Dez 2009) $
060 */
061 public class ContextDeleteListener extends AbstractContextListener {
062
063 private static ILogger LOG = LoggerFactory.getLogger( ContextDeleteListener.class );
064
065 /**
066 * WEB-INF/conf/igeoportal/
067 */
068 private static String confDir = "WEB-INF/conf/igeoportal/";
069
070 public void actionPerformed( FormEvent event ) {
071
072 RPCWebEvent rpc = (RPCWebEvent) event;
073 try {
074 validate( rpc );
075 } catch ( PortalException e ) {
076 gotoErrorPage( Messages.getMessage( "IGEO_STD_CNTXT_NO_VALID_RPC", e.getMessage() ) );
077 return;
078 }
079
080 String userName = null;
081 try {
082 userName = extractUserName( rpc );
083 } catch ( Exception e ) {
084 gotoErrorPage( Messages.getMessage( "IGEO_STD_CNTXT_INVALID_USER_IDENTIFICATION", e.getMessage() ) );
085 return;
086 }
087
088 String contextName = readContextName( rpc );
089 try {
090 deleteContext( contextName, userName );
091 } catch ( Exception e ) {
092 gotoErrorPage( Messages.getMessage( "IGEO_STD_CNTXT_DELETE_FAILED", e.getMessage() ) );
093 e.printStackTrace();
094 return;
095 }
096
097 int pos = contextName.lastIndexOf( "/" );
098 contextName = contextName.substring( pos + 1, contextName.length() );
099 List<String> contextList = null;
100 try {
101 contextList = getContextList( userName );
102 } catch ( Exception e ) {
103 gotoErrorPage( "List of available context documents\n" + e.getMessage() );
104 return;
105 }
106
107 getRequest().setAttribute( "CONTEXT", contextName );
108 getRequest().setAttribute( "CONTEXT_LIST", contextList );
109 getRequest().setAttribute( "USER", userName );
110 }
111
112 /**
113 * validates if the passed RPC call containes the required variables
114 *
115 * @param rpc
116 * @throws ClientException
117 */
118 private void validate( RPCWebEvent rpc )
119 throws PortalException {
120 RPCMethodCall mc = rpc.getRPCMethodCall();
121 RPCParameter param = mc.getParameters()[0];
122 RPCStruct struct = (RPCStruct) param.getValue();
123
124 RPCMember selectedContext = struct.getMember( "mapContext" );
125 if ( selectedContext == null ) {
126 throw new PortalException( Messages.getMessage( "IGEO_STD_CNTXT_MISSING_PARAM", "mapContext",
127 "ContextDelete" ) );
128 }
129 RPCMember sessionID = struct.getMember( "sessionID" );
130 if ( sessionID == null ) {
131 throw new PortalException( Messages.getMessage( "IGEO_STD_CNTXT_MISSING_PARAM", "sessionID",
132 "ContextDelete" ) );
133 }
134 LOG.logDebug( "*** RPC VALIDATION ***\n mapContext: ", selectedContext.getValue(), "\n sessionID: ",
135 sessionID.getValue() );
136 }
137
138 /**
139 * reads the session ID from the passed RPC and gets the assigned user name from a authentification service.
140 *
141 * @param event
142 * @return
143 * @throws Exception
144 */
145 private String extractUserName( RPCWebEvent event )
146 throws Exception {
147 RPCMethodCall mc = event.getRPCMethodCall();
148 RPCParameter[] pars = mc.getParameters();
149 RPCStruct struct = (RPCStruct) pars[0].getValue();
150
151 // get map context value
152 String name = "default";
153 try {
154 name = getUserName( (String) struct.getMember( "sessionID" ).getValue() );
155 if ( name == null ) {
156 name = "default";
157 }
158 } catch ( Exception e ) {
159 }
160 return name;
161 }
162
163 private String readContextName( RPCWebEvent rpc ) {
164 RPCMethodCall mc = rpc.getRPCMethodCall();
165 RPCParameter param = mc.getParameters()[0];
166 RPCStruct struct = (RPCStruct) param.getValue();
167 return (String) struct.getMember( "mapContext" ).getValue();
168 }
169
170 /**
171 *
172 * @param contextName
173 * @param userName
174 * @throws ClientException
175 * @throws IOException
176 */
177 private void deleteContext( String contextName, String userName )
178 throws PortalException, IOException {
179
180 String fName = getHomePath() + confDir + contextName;
181 // ensure that no configuration files are deleted
182 if ( !fName.endsWith( ".properties" ) && !fName.endsWith( ".properies~" ) ) {
183
184 String startCnxt = getUsersStartContext( userName );
185 if ( new File( startCnxt ).getName().equals( new File( fName ).getName() ) ) {
186 throw new PortalException( Messages.getMessage( "IGEO_STD_CNTXT_DELETE_STARTCONTEXT_NOT_ALLOWED",
187 contextName ) );
188 }
189
190 File file = new File( fName );
191 if ( !file.exists() ) {
192 throw new PortalException( Messages.getMessage( "IGEO_STD_CNTXT_DOES_NOT_EXIST", contextName ) );
193 }
194 if ( !file.delete() ) {
195 throw new PortalException( Messages.getMessage( "IGEO_STD_CNTXT_NOT_DELETED", contextName ) );
196 }
197 }
198 }
199
200 }