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DSS Document contains the code for the creation and validation of XAdES, CAdES, PAdES and ASiC signatures.

There is a newer version: 6.1

/**
 * DSS - Digital Signature Services
 * Copyright (C) 2015 European Commission, provided under the CEF programme
 * 
 * This file is part of the "DSS - Digital Signature Services" project.
 * 
 * This library 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.
 * 
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
package eu.europa.esig.dss.validation;

import eu.europa.esig.dss.model.x509.CertificateToken;
import eu.europa.esig.dss.spi.x509.revocation.RevocationToken;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * This class fetches firstly CRL response, if not available, tries OCSP and returns the first succeeded result
 *
 */
public class CRLFirstRevocationDataLoadingStrategy extends RevocationDataLoadingStrategy {

    private static final Logger LOG = LoggerFactory.getLogger(CRLFirstRevocationDataLoadingStrategy.class);

    /**
     * Default constructor
     */
    public CRLFirstRevocationDataLoadingStrategy() {
        // empty
    }

    @Override
    @SuppressWarnings("rawtypes")
    public RevocationToken getRevocationToken(CertificateToken certificateToken, CertificateToken issuerToken) {
        RevocationToken crlToken = checkCRL(certificateToken, issuerToken);
        if (crlToken != null && isAcceptableToken(crlToken)) {
            return crlToken;
        }
        RevocationToken ocspToken = checkOCSP(certificateToken, issuerToken);
        if (ocspToken != null && isAcceptableToken(ocspToken)) {
            return ocspToken;
        }
        if (crlToken == null && ocspToken == null && LOG.isDebugEnabled()) {
            LOG.debug("There is no response for {} neither from CRL nor from OCSP!", certificateToken.getDSSIdAsString());
        }
        if (fallbackEnabled) {
            // return first successful result
            return crlToken != null ? crlToken : ocspToken;
        }
        return null;
    }

}