org.digidoc4j.impl.bdoc.tsl.ClonedTslCertificateSource.java Source code

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Here is the source code for org.digidoc4j.impl.bdoc.tsl.ClonedTslCertificateSource.java

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/* DigiDoc4J library
*
* This software is released under either the GNU Library General Public
* License (see LICENSE.LGPL).
*
* Note that the only valid version of the LGPL license as far as this
* project is concerned is the original GNU Library General Public License
* Version 2.1, February 1999
*/

package org.digidoc4j.impl.bdoc.tsl;

import java.util.List;

import javax.security.auth.x500.X500Principal;

import org.apache.commons.lang.SerializationUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import eu.europa.esig.dss.x509.CertificatePool;
import eu.europa.esig.dss.x509.CertificateSource;
import eu.europa.esig.dss.x509.CertificateToken;

/**
 * Uses a cloned TSL object so that each signature creation and validation process would
 * use its own separate TSL object. This avoids polluting certificate pool with certificates
 * found within signatures.
 */
public class ClonedTslCertificateSource implements CertificateSource {

    private static final Logger logger = LoggerFactory.getLogger(ClonedTslCertificateSource.class);
    private CertificateSource certificateSource;
    private CertificateSource clonedCertificateSource;

    public ClonedTslCertificateSource(CertificateSource certificateSource) {
        logger.debug("Instantiating cloned tsl cert source");
        this.certificateSource = certificateSource;
    }

    private CertificateSource getCertificateSource() {
        logger.debug("Accessing TSL");
        if (clonedCertificateSource == null) {
            initializeClonedTsl();
        }
        return clonedCertificateSource;
    }

    private void initializeClonedTsl() {
        if (certificateSource instanceof LazyTslCertificateSource) {
            ((LazyTslCertificateSource) certificateSource).refreshIfCacheExpired();
        }
        logger.debug("Cloning TSL");
        clonedCertificateSource = (CertificateSource) SerializationUtils.clone(certificateSource);
        logger.debug("Finished cloning TSL");
    }

    @Override
    public CertificatePool getCertificatePool() {
        return getCertificateSource().getCertificatePool();
    }

    @Override
    public CertificateToken addCertificate(CertificateToken certificate) {
        return getCertificateSource().addCertificate(certificate);
    }

    @Override
    public List<CertificateToken> get(X500Principal x500Principal) {
        return getCertificateSource().get(x500Principal);
    }
}