001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/security/owsproxy/StringReplacementTrigger.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.security.owsproxy;
037
038 import java.util.ArrayList;
039 import java.util.List;
040
041 import org.deegree.framework.log.ILogger;
042 import org.deegree.framework.log.LoggerFactory;
043 import org.deegree.framework.trigger.Trigger;
044 import org.deegree.framework.util.StringTools;
045 import org.deegree.ogcwebservices.OGCWebServiceRequest;
046 import org.deegree.ogcwebservices.csw.capabilities.CatalogueGetCapabilities;
047 import org.deegree.ogcwebservices.sos.capabilities.SOSGetCapabilities;
048 import org.deegree.ogcwebservices.wcs.getcapabilities.WCSGetCapabilities;
049 import org.deegree.ogcwebservices.wfs.operation.WFSGetCapabilities;
050 import org.deegree.ogcwebservices.wmps.operation.WMPSGetCapabilities;
051 import org.deegree.ogcwebservices.wms.operation.WMSGetCapabilities;
052 import org.deegree.ogcwebservices.wps.capabilities.WPSGetCapabilities;
053 import org.deegree.ogcwebservices.wpvs.operation.WPVSGetCapabilities;
054
055 /**
056 * Trigger for replacing string within requests and responses to OGC Web Service packed behind a
057 * owsProxy. At the moment replacements are just supported for responses to GetCapabilities
058 * requests.
059 *
060 *
061 * @version $Revision: 18195 $
062 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
063 * @author last edited by: $Author: mschneider $
064 *
065 * @version 1.0. $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
066 *
067 * @since 2.0
068 */
069 public class StringReplacementTrigger implements Trigger {
070
071 private static final ILogger LOG = LoggerFactory.getLogger( StringReplacementTrigger.class );
072
073 private String name;
074
075 private String consideredRequests;
076
077 private List<String> replacementsKeys;
078
079 private List<String> replacementsVals;
080
081 /**
082 *
083 * @param replacements
084 * list of replacement rules "{key1|value1}{key2|value2} ... {keyX|valueX}"
085 * @param consideredRequests
086 * comma seperated list of request names to be considerded; e.g.
087 * "WMS:GetFeatureInfo,WMS:GetCapabilities,WFS:GetFeature"
088 */
089 public StringReplacementTrigger( String replacements, String consideredRequests ) {
090
091 this.consideredRequests = consideredRequests;
092 String[] tmp = StringTools.extractStrings( replacements, "{", "}" );
093 this.replacementsKeys = new ArrayList<String>( tmp.length );
094 this.replacementsVals = new ArrayList<String>( tmp.length );
095 for ( int i = 0; i < tmp.length; i++ ) {
096 int pos = tmp[i].lastIndexOf( '|' );
097 this.replacementsKeys.add( tmp[i].substring( 0, pos ) );
098 this.replacementsVals.add( tmp[i].substring( pos + 1, tmp[i].length() ) );
099 }
100 }
101
102 /**
103 *
104 * @param caller
105 * instance of calling class
106 * @param values
107 * values passed from the calling method
108 */
109 public Object[] doTrigger( Object caller, Object... values ) {
110
111 if ( values.length == 2 ) {
112 values = handleRequestValidation( values );
113 } else {
114 values = handleResponseValidation( values );
115 }
116 return values;
117 }
118
119 /**
120 *
121 * @param values
122 * @return an array of objects
123 */
124 private Object[] handleResponseValidation( Object[] values ) {
125
126 // TODO
127 // consider personal user rights
128
129 OGCWebServiceRequest request = (OGCWebServiceRequest) values[0];
130 byte[] data = (byte[]) values[1];
131
132 if ( ( request instanceof WMSGetCapabilities && consideredRequests.indexOf( "WMS:GetCapabilities" ) > -1 )
133 || ( request instanceof WFSGetCapabilities && consideredRequests.indexOf( "WFS:GetCapabilities" ) > -1 )
134 || ( request instanceof CatalogueGetCapabilities && consideredRequests.indexOf( "CSW:GetCapabilities" ) > -1 )
135 || ( request instanceof WCSGetCapabilities && consideredRequests.indexOf( "WCS:GetCapabilities" ) > -1 )
136 || ( request instanceof WMPSGetCapabilities && consideredRequests.indexOf( "WMPS:GetCapabilities" ) > -1 )
137 || ( request instanceof WPVSGetCapabilities && consideredRequests.indexOf( "WPVS:GetCapabilities" ) > -1 )
138 || ( request instanceof SOSGetCapabilities && consideredRequests.indexOf( "SOS:GetCapabilities" ) > -1 )
139 || ( request instanceof WPSGetCapabilities && consideredRequests.indexOf( "WPS:GetCapabilities" ) > -1 ) ) {
140 String tmp = new String( data );
141 for ( int i = 0; i < replacementsKeys.size(); i++ ) {
142 LOG.logDebug( "response replacement: ", replacementsKeys.get( i ) + " - " + replacementsVals.get( i ) );
143 tmp = tmp.replaceAll( replacementsKeys.get( i ), replacementsVals.get( i ) );
144 }
145 values[1] = tmp.getBytes();
146 } else {
147 // TODO
148 // support replacements within responses to other requests
149 LOG.logInfo( "No string replacement implemented for request: ", request.getClass().getName() );
150 }
151
152 return values;
153 }
154
155 /**
156 *
157 * @param values
158 * @return the values.
159 */
160 private Object[] handleRequestValidation( Object[] values ) {
161 // OGCWebServiceRequest request = (OGCWebServiceRequest)values[0];
162 // User user = (User)values[1];
163
164 // TODO
165 // consider personal user rights
166
167 // TODO
168 // support replacements within requests
169
170 return values;
171 }
172
173 /**
174 * returns the name of the trigger
175 *
176 * @return name of the trigger
177 */
178 public String getName() {
179 return name;
180 }
181
182 /**
183 * sets the name of the trigger
184 *
185 * @param name
186 * name of the trigger
187 */
188 public void setName( String name ) {
189 this.name = name;
190 }
191
192 }