be.fedict.trust.ocsp.OfflineOcspRepository.java Source code

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Here is the source code for be.fedict.trust.ocsp.OfflineOcspRepository.java

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/*
 * Java Trust Project.
 * Copyright (C) 2009 FedICT.
 * Copyright (C) 2014 e-Contract.be BVBA.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version
 * 3.0 as published by the Free Software Foundation.
 *
 * This software 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 software; if not, see 
 * http://www.gnu.org/licenses/.
 */

package be.fedict.trust.ocsp;

import java.io.IOException;
import java.net.URI;
import java.security.cert.X509Certificate;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.bouncycastle.cert.jcajce.JcaX509CertificateHolder;
import org.bouncycastle.cert.ocsp.BasicOCSPResp;
import org.bouncycastle.cert.ocsp.CertificateID;
import org.bouncycastle.cert.ocsp.OCSPException;
import org.bouncycastle.cert.ocsp.OCSPResp;
import org.bouncycastle.cert.ocsp.SingleResp;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.operator.DigestCalculatorProvider;
import org.bouncycastle.operator.OperatorCreationException;
import org.bouncycastle.operator.jcajce.JcaDigestCalculatorProviderBuilder;

/**
 * Off line OCSP repository. This implementation receives a list of
 * {@link OCSPResp} objects.
 * <p>
 * TODO: when multiple OCSPs match, we should return the one closest to the
 * validation date.
 * </p>
 * 
 * @author Frank Cornelis
 */
public class OfflineOcspRepository implements OcspRepository {

    private static final Log LOG = LogFactory.getLog(OfflineOcspRepository.class);

    private final List<OCSPResp> ocspResponses;

    /**
     * Main constructor
     * 
     * @param encodedOcspResponses
     *            the list of encoded OCSP responses that can be queried.
     * @throws IOException
     */
    public OfflineOcspRepository(List<byte[]> encodedOcspResponses) throws IOException {

        this.ocspResponses = new LinkedList<>();
        for (byte[] encodedOcspResponse : encodedOcspResponses) {
            OCSPResp ocspResponse = new OCSPResp(encodedOcspResponse);
            ocspResponses.add(ocspResponse);
        }
    }

    @Override
    public OCSPResp findOcspResponse(URI ocspUri, X509Certificate certificate, X509Certificate issuerCertificate,
            Date validationDate) {

        LOG.debug("find OCSP response");

        DigestCalculatorProvider digCalcProv;
        try {
            digCalcProv = new JcaDigestCalculatorProviderBuilder().setProvider(BouncyCastleProvider.PROVIDER_NAME)
                    .build();
        } catch (OperatorCreationException e) {
            throw new RuntimeException(e);
        }

        CertificateID certId;
        try {
            certId = new CertificateID(digCalcProv.get(CertificateID.HASH_SHA1),
                    new JcaX509CertificateHolder(issuerCertificate), certificate.getSerialNumber());
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

        try {
            for (OCSPResp ocspResp : this.ocspResponses) {
                BasicOCSPResp basicOCSPResp = (BasicOCSPResp) ocspResp.getResponseObject();
                for (SingleResp singleResp : basicOCSPResp.getResponses()) {
                    if (singleResp.getCertID().equals(certId)) {
                        LOG.debug("OCSP response found");
                        return ocspResp;
                    }
                }
            }
        } catch (OCSPException e) {
            LOG.error("OCSPException: " + e.getMessage(), e);
            return null;
        }

        LOG.debug("OCSP response not found");
        return null;
    }
}