001    //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/ogcwebservices/wass/common/URN.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.ogcwebservices.wass.common;
038    
039    /**
040     * Encapsulates a Uniform Resource Name (URN) which encodes an authentication method according to
041     * the GDI NRW access control specification.
042     *
043     * @author <a href="mailto:schmitz@lat-lon.de">Andreas Schmitz</a>
044     * @author last edited by: $Author: mschneider $
045     *
046     * @version 2.0, $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $
047     *
048     * @since 2.0
049     */
050    public class URN {
051    
052        private String urn;
053    
054        /**
055         * Creates new one from a String.
056         *
057         * @param urn
058         *            the string
059         */
060        public URN( String urn ) {
061            this.urn = urn;
062        }
063    
064        /**
065         * Returns the last part of the name, or null, if it is not a wellformed GDI NRW authentication.
066         * method URN.
067         *
068         * @return the name, or null
069         */
070        public String getAuthenticationMethod() {
071            if ( !isWellformedGDINRW() )
072                return null;
073            return getLastName();
074        }
075    
076        /**
077         * Returns the last part of the name, or null, if it is not a URN.
078         *
079         * @return the last part of this URN
080         */
081        public String getLastName() {
082            if ( urn == null )
083                return null;
084            if ( !urn.startsWith( "urn:" ) )
085                return null;
086            return urn.substring( urn.lastIndexOf( ':' ) + 1 );
087        }
088    
089        /**
090         * Returns, whether this is a wellformed GDI NRW authentication method URN.
091         *
092         * @return true, if it is
093         */
094        public boolean isWellformedGDINRW() {
095            if ( urn == null )
096                return false;
097            String lastName = getLastName();
098            if ( urn.startsWith( "urn:x-gdi-nrw:authnMethod:1.0:" ) )
099                if ( lastName.equalsIgnoreCase( "password" ) || lastName.equalsIgnoreCase( "was" )
100                     || lastName.equalsIgnoreCase( "session" )
101                     || lastName.equalsIgnoreCase( "anonymous" ) )
102                    return true;
103            return false;
104        }
105    
106        /**
107         * @param other
108         * @return true if other equals this URN
109         */
110        public boolean equals ( URN other ){
111            if( other == null )
112                return false;
113            if( !other.isWellformedGDINRW() || !this.isWellformedGDINRW() )
114                return false;
115            return other.getLastName().equals( this.getLastName() );
116        }
117    
118        @Override
119        public String toString() {
120            return urn;
121        }
122    
123    }