001    /*
002     * The MIT License
003     * Copyright (c) 2012 Microsoft Corporation
004     *
005     * Permission is hereby granted, free of charge, to any person obtaining a copy
006     * of this software and associated documentation files (the "Software"), to deal
007     * in the Software without restriction, including without limitation the rights
008     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
009     * copies of the Software, and to permit persons to whom the Software is
010     * furnished to do so, subject to the following conditions:
011     *
012     * The above copyright notice and this permission notice shall be included in
013     * all copies or substantial portions of the Software.
014     *
015     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
016     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
017     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
018     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
019     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
020     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
021     * THE SOFTWARE.
022     */
023    
024    package microsoft.exchange.webservices.data.security;
025    
026    import javax.xml.stream.XMLInputFactory;
027    import javax.xml.stream.XMLStreamException;
028    import javax.xml.stream.XMLStreamReader;
029    import javax.xml.validation.Schema;
030    import javax.xml.validation.Validator;
031    import javax.xml.validation.ValidatorHandler;
032    
033    import java.io.InputStream;
034    
035    /**
036     * XmlSchema with protection against DTD parsing in read overloads
037     */
038    public class SafeXmlSchema extends Schema {
039    
040      @Override
041      public Validator newValidator() {
042        // TODO Auto-generated method stub
043        return null;
044      }
045    
046      @Override
047      public ValidatorHandler newValidatorHandler() {
048        // TODO Auto-generated method stub
049        return null;
050      }
051    
052      /**
053       * Reads an XML Schema from the supplied stream.
054       *
055       * @param stream The supplied data stream.
056       * @return The XmlSchema object representing the XML Schema.
057       * @throws javax.xml.stream.XMLStreamException
058       */
059      public static Schema read(final InputStream stream) throws XMLStreamException {
060        final XMLInputFactory inputFactory = XMLInputFactory.newInstance();
061        return (Schema) inputFactory.createXMLEventReader(stream);
062      }
063    
064      /**
065       * Reads an XML Schema from the supplied TextReader.
066       *
067       * @param reader The TextReader containing the XML Schema to read
068       * @return The XmlSchema object representing the XML Schema.
069       * @throws javax.xml.stream.XMLStreamException
070       */
071    
072      public static Schema read(XMLStreamReader reader) throws XMLStreamException {
073        final XMLInputFactory inputFactory = XMLInputFactory.newInstance();
074        return (Schema) inputFactory.createXMLEventReader(reader);
075      }
076    
077    }