001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/security/owsrequestvalidator/wfs/DescribeFeatureTypeRequestValidator.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.owsrequestvalidator.wfs;
037
038 import static org.deegree.portal.standard.security.control.ClientHelper.TYPE_FEATURETYPE;
039 import static org.deegree.security.drm.model.RightType.DESCRIBEFEATURETYPE;
040
041 import java.util.List;
042
043 import org.deegree.datatypes.QualifiedName;
044 import org.deegree.datatypes.Types;
045 import org.deegree.framework.log.ILogger;
046 import org.deegree.framework.log.LoggerFactory;
047 import org.deegree.i18n.Messages;
048 import org.deegree.model.feature.Feature;
049 import org.deegree.model.feature.FeatureFactory;
050 import org.deegree.model.feature.FeatureProperty;
051 import org.deegree.model.feature.schema.FeatureType;
052 import org.deegree.model.feature.schema.PropertyType;
053 import org.deegree.ogcwebservices.InvalidParameterValueException;
054 import org.deegree.ogcwebservices.OGCWebServiceRequest;
055 import org.deegree.ogcwebservices.wfs.operation.DescribeFeatureType;
056 import org.deegree.security.UnauthorizedException;
057 import org.deegree.security.drm.model.User;
058 import org.deegree.security.owsproxy.Condition;
059 import org.deegree.security.owsproxy.OperationParameter;
060 import org.deegree.security.owsproxy.Request;
061 import org.deegree.security.owsrequestvalidator.Policy;
062
063 /**
064 *
065 *
066 *
067 * @version $Revision: 18195 $
068 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
069 * @author last edited by: $Author: mschneider $
070 *
071 * @version 1.0. $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
072 *
073 * @since 2.0
074 */
075 class DescribeFeatureTypeRequestValidator extends AbstractWFSRequestValidator {
076
077 private static final ILogger LOG = LoggerFactory.getLogger( DescribeFeatureTypeRequestValidator.class );
078
079 // known condition parameter
080 private static final String FORMAT = "format";
081
082 private static FeatureType gfFT = null;
083
084 static {
085 if ( gfFT == null ) {
086 gfFT = DescribeFeatureTypeRequestValidator.createFeatureType();
087 }
088 }
089
090 /**
091 * @param policy
092 */
093 public DescribeFeatureTypeRequestValidator( Policy policy ) {
094 super( policy );
095 }
096
097 @Override
098 public void validateRequest( OGCWebServiceRequest request, User user )
099 throws InvalidParameterValueException, UnauthorizedException {
100 userCoupled = false;
101 Request req = policy.getRequest( "WFS", "DescribeFeatureType" );
102
103 if ( req == null ) {
104 String msg = "Did you define a DescribeFeatureType section in your WFS policy file?";
105 LOG.logWarning( msg );
106 throw new InvalidParameterValueException( msg );
107 }
108
109 // request is valid because no restrictions are made
110 if ( req.isAny() || req.getPreConditions().isAny() ) {
111 return;
112 }
113 Condition condition = req.getPreConditions();
114
115 DescribeFeatureType wfsreq = (DescribeFeatureType) request;
116
117 validateVersion( condition, wfsreq.getVersion() );
118
119 QualifiedName[] typeNames = wfsreq.getTypeNames();
120 String[] ft = new String[typeNames.length];
121 for ( int i = 0; i < ft.length; i++ ) {
122 StringBuffer sb = new StringBuffer( 200 );
123 sb.append( '{' ).append( typeNames[i].getNamespace().toASCIIString() );
124 sb.append( "}:" ).append( typeNames[i].getLocalName() );
125 ft[i] = sb.toString();
126 }
127 validateFeatureTypes( condition, ft );
128 validateFormat( condition, wfsreq.getOutputFormat() );
129
130 if ( userCoupled ) {
131 validateAgainstRightsDB( wfsreq, user );
132 }
133 }
134
135 /**
136 * valides if the format you in a GetFeature request is valid against the policy assigned to Validator. If the
137 * passed user is not <tt>null</tt> and the format parameter is user coupled the format will be validated against a
138 * users and rights management system.
139 *
140 * @param condition
141 * @param format
142 * @throws InvalidParameterValueException
143 */
144 private void validateFormat( Condition condition, String format )
145 throws InvalidParameterValueException {
146 OperationParameter op = condition.getOperationParameter( FORMAT );
147
148 if ( op == null ) {
149 String msg = "You forgot to add a format parameter to your DescribeFeatureType section in your policy.";
150 LOG.logWarning( msg );
151 throw new InvalidParameterValueException( msg );
152 }
153
154 // version is valid because no restrictions are made
155 if ( op.isAny() )
156 return;
157
158 List<String> validLayers = op.getValues();
159 if ( op.isUserCoupled() ) {
160 userCoupled = true;
161 } else {
162 if ( !validLayers.contains( format ) ) {
163 String s = Messages.getMessage( "OWSPROXY_DESCRIBEFEATURETYPE_FORMAT", format );
164 throw new InvalidParameterValueException( s );
165 }
166 }
167
168 }
169
170 /**
171 * validates the passed WMS GetMap request against a User- and Rights-Management DB.
172 *
173 * @param wfsreq
174 * @param user
175 * @throws InvalidParameterValueException
176 */
177 private void validateAgainstRightsDB( DescribeFeatureType wfsreq, User user )
178 throws InvalidParameterValueException, UnauthorizedException {
179
180 if ( user == null ) {
181 throw new UnauthorizedException( "no access to anonymous user" );
182 }
183
184 // create feature that describes the map request
185 FeatureProperty[] fps = new FeatureProperty[2];
186 fps[0] = FeatureFactory.createFeatureProperty( new QualifiedName( "version" ), wfsreq.getVersion() );
187 fps[1] = FeatureFactory.createFeatureProperty( new QualifiedName( "outputformat" ), wfsreq.getOutputFormat() );
188
189 Feature feature = FeatureFactory.createFeature( "id", gfFT, fps );
190 QualifiedName[] typeNames = wfsreq.getTypeNames();
191 for ( int i = 0; i < typeNames.length; i++ ) {
192 StringBuffer sb = new StringBuffer( 200 );
193 sb.append( '{' ).append( typeNames[i].getNamespace().toASCIIString() );
194 sb.append( "}:" ).append( typeNames[i].getLocalName() );
195 LOG.logDebug( "validating feature type (DESCRIBEFEATURETYPE) against rights database: ", sb );
196 if ( securityConfig.getProxiedUrl() == null ) {
197 handleUserCoupledRules( user, feature, sb.toString(), TYPE_FEATURETYPE, DESCRIBEFEATURETYPE );
198 } else {
199 handleUserCoupledRules( user, feature, "[" + securityConfig.getProxiedUrl() + "]:" + sb,
200 TYPE_FEATURETYPE, DESCRIBEFEATURETYPE );
201 }
202 }
203
204 }
205
206 /**
207 * creates a feature type that matches the parameters of a GetLagendGraphic request
208 *
209 * @return created <tt>FeatureType</tt>
210 */
211 private static FeatureType createFeatureType() {
212 PropertyType[] ftps = new PropertyType[2];
213 ftps[0] = FeatureFactory.createSimplePropertyType( new QualifiedName( "version" ), Types.VARCHAR, false );
214 ftps[1] = FeatureFactory.createSimplePropertyType( new QualifiedName( "outputformat" ), Types.VARCHAR, false );
215
216 return FeatureFactory.createFeatureType( "DescribeFeatureType", false, ftps );
217 }
218
219 }