XAdESCRLSource.java

/*
 * DSS - Digital Signature Services
 *
 * Copyright (C) 2013 European Commission, Directorate-General Internal Market and Services (DG MARKT), B-1049 Bruxelles/Brussel
 *
 * Developed by: 2013 ARHS Developments S.A. (rue Nicolas Bové 2B, L-1253 Luxembourg) http://www.arhs-developments.com
 *
 * This file is part of the "DSS - Digital Signature Services" project.
 *
 * "DSS - Digital Signature Services" is free software: you can redistribute it and/or modify it under the terms of
 * the GNU Lesser General Public License as published by the Free Software Foundation, either version 2.1 of the
 * License, or (at your option) any later version.
 *
 * DSS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with
 * "DSS - Digital Signature Services".  If not, see <http://www.gnu.org/licenses/>.
 */

package eu.europa.ec.markt.dss.validation102853.xades;

import java.security.cert.X509CRL;
import java.util.ArrayList;

import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import eu.europa.ec.markt.dss.DSSUtils;
import eu.europa.ec.markt.dss.DSSXMLUtils;
import eu.europa.ec.markt.dss.exception.DSSNullException;
import eu.europa.ec.markt.dss.validation102853.crl.OfflineCRLSource;

/**
 * Retrieves CRL values from an XAdES (-XL) signature.
 *
 * @version $Revision$ - $Date$
 */

public class XAdESCRLSource extends OfflineCRLSource {

    /**
     * The default constructor for XAdESCRLSource.
     *
     * @param signatureElement {@code Element} that contains an XML signature
     * @param xPathQueryHolder adapted {@code XPathQueryHolder}
     */
    public XAdESCRLSource(final Element signatureElement, final XPathQueryHolder xPathQueryHolder) {

        if (signatureElement == null) {

            throw new DSSNullException(Element.class, "signatureElement");
        }
        if (xPathQueryHolder == null) {

            throw new DSSNullException(XPathQueryHolder.class, "xPathQueryHolder");
        }
	    x509CRLList = new ArrayList<X509CRL>();
        addCRLs(signatureElement, xPathQueryHolder.XPATH_ENCAPSULATED_CRL_VALUE);
        addCRLs(signatureElement, xPathQueryHolder.XPATH_TSVD_ENCAPSULATED_CRL_VALUE);
    }

    private void addCRLs(Element signatureElement, final String xPathQuery) {

        final NodeList nodeList = DSSXMLUtils.getNodeList(signatureElement, xPathQuery);
        for (int ii = 0; ii < nodeList.getLength(); ii++) {

            final Element certEl = (Element) nodeList.item(ii);
            final String textContent = certEl.getTextContent();
            final X509CRL x509CRL = DSSUtils.loadCRLBase64Encoded(textContent);
            if (!x509CRLList.contains(x509CRL)) {

                x509CRLList.add(x509CRL);
            }
        }
    }
}