/*
 * 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;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import eu.europa.ec.markt.dss.exception.DSSException;
import eu.europa.ec.markt.dss.validation102853.ocsp.OCSPSource;

/**
 * Check the status of the certificate using an OCSPSource
 *
 * @version $Revision: 1757 $ - $Date: 2013-03-14 20:33:28 +0100 (Thu, 14 Mar 2013) $
 */

public class OCSPCertificateVerifier implements CertificateStatusVerifier {

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

	private final OCSPSource ocspSource;

	private final CertificatePool validationCertPool;

	/**
	 * Create a CertificateVerifier that will use the OCSP Source for checking revocation data. The default constructor
	 * for OCSPCertificateVerifier.
	 *
	 * @param ocspSource
	 * @param validationCertPool
	 */
	public OCSPCertificateVerifier(final OCSPSource ocspSource, final CertificatePool validationCertPool) {

		this.ocspSource = ocspSource;
		this.validationCertPool = validationCertPool;
	}

	@Override
	public RevocationToken check(final CertificateToken toCheckToken) {

		if (ocspSource == null) {

			LOG.warn("OCSPSource null");
			toCheckToken.extraInfo().infoOCSPSourceIsNull();
			return null;
		}
		try {

			final OCSPToken ocspToken = ocspSource.getOCSPToken(toCheckToken, validationCertPool);
			if (ocspToken == null) {

				if (LOG.isInfoEnabled()) {
					LOG.debug("No matching OCSP response found for " + toCheckToken.getDSSIdAsString());
				}
			}
			return ocspToken;
		} catch (DSSException e) {

			LOG.error("OCSP DSS Exception: " + e.getMessage(), e);
			toCheckToken.extraInfo().infoOCSPException(e);
			return null;
		}
	}
}