SAXParserContextProvider.java

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package com.sun.jersey.core.impl.provider.xml;

import com.sun.jersey.core.util.FeaturesAndProperties;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ws.rs.core.Context;
import javax.xml.XMLConstants;
import javax.xml.parsers.SAXParserFactory;

/**
 *
 * @author Paul.Sandoz@Sun.Com
 */
public class SAXParserContextProvider extends ThreadLocalSingletonContextProvider<SAXParserFactory> {
    private static final Logger LOGGER = Logger.getLogger(
            SAXParserContextProvider.class.getName());

    private final boolean disableXmlSecurity;
    
    public SAXParserContextProvider(@Context FeaturesAndProperties fps) {
        super(SAXParserFactory.class);

        disableXmlSecurity = fps.getFeature(FeaturesAndProperties.FEATURE_DISABLE_XML_SECURITY);
    }

    @Override
    protected SAXParserFactory getInstance() {
        SAXParserFactory f = SAXParserFactory.newInstance();

        f.setNamespaceAware(true);
        
        if (!disableXmlSecurity) {
            try {
                f.setFeature("http://xml.org/sax/features/external-general-entities", Boolean.FALSE);
            } catch (Exception ex) {
                throw new RuntimeException("Security features for the SAX parser could not be enabled",  ex);
            }

            try {
                f.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, Boolean.TRUE);
            } catch (Exception ex) {
                LOGGER.log(Level.WARNING, 
                        "JAXP feature XMLConstants.FEATURE_SECURE_PROCESSING cannot be set on a SAXParserFactory. " +
                        "External general entity processing is disabled but other potential security related" +
                        " features will not be enabled.", 
                        ex);
            }
        }

        return f;
    }
}