at.gv.egiz.bku.spring.PKITrustManager.java Source code

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Here is the source code for at.gv.egiz.bku.spring.PKITrustManager.java

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/*
 * Copyright 2011 by Graz University of Technology, Austria
 * MOCCA has been developed by the E-Government Innovation Center EGIZ, a joint
 * initiative of the Federal Chancellery Austria and Graz University of Technology.
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * http://www.osor.eu/eupl/
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text
 * file for details on the various modules and licenses.
 * The "NOTICE" text file is part of the distribution. Any derivative works
 * that you distribute must include a readable copy of the "NOTICE" text file.
 */

package at.gv.egiz.bku.spring;

import iaik.logging.TransactionId;
import iaik.pki.PKIException;
import iaik.pki.PKIFactory;
import iaik.pki.PKIModule;
import iaik.pki.PKIProfile;
import iaik.pki.store.truststore.TrustStore;
import iaik.pki.store.truststore.TrustStoreException;
import iaik.pki.store.truststore.TrustStoreFactory;

import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Date;
import java.util.Set;

import javax.net.ssl.X509TrustManager;

import org.apache.commons.configuration.Configuration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;

import at.gv.egiz.bku.conf.MoccaConfigurationFacade;

public class PKITrustManager implements X509TrustManager {

    Logger log = LoggerFactory.getLogger(PKITrustManager.class);

    protected PKIProfile pkiProfile;

    /**
     * The configuration facade.
     */
    protected final ConfigurationFacade configurationFacade = new ConfigurationFacade();

    public class ConfigurationFacade implements MoccaConfigurationFacade {

        private Configuration configuration;

        public static final String SSL_DISSABLE_ALL_CHECKS = "SSL.disableAllChecks";

        public boolean disableAllSslChecks() {
            return configuration.getBoolean(SSL_DISSABLE_ALL_CHECKS, false);
        }

    }

    /**
     * @return the configuration
     */
    public Configuration getConfiguration() {
        return configurationFacade.configuration;
    }

    /**
     * @param configuration the configuration to set
     */
    public void setConfiguration(Configuration configuration) {
        configurationFacade.configuration = configuration;
    }

    /**
     * @return the pkiProfile
     */
    public PKIProfile getPkiProfile() {
        return pkiProfile;
    }

    /**
     * @param pkiProfile the pkiProfile to set
     */
    public void setPkiProfile(PKIProfile pkiProfile) {
        this.pkiProfile = pkiProfile;
    }

    @Override
    public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
        checkServerTrusted(chain, authType);
    }

    @Override
    public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {

        if (pkiProfile == null) {
            throw new CertificateException("No PKI profile set. Configuration error.");
        }

        if (configurationFacade.disableAllSslChecks()) {
            log.warn("SSL certificate validation disabled. " + "Accepted certificate {}.", chain[0].getSubjectDN());
        } else {

            iaik.x509.X509Certificate[] certs = convertCerts(chain);

            TransactionId tid = new MDCTransactionId();
            try {
                PKIModule pkiModule = PKIFactory.getInstance().getPKIModule(pkiProfile);
                if (!pkiModule.validateCertificate(new Date(), certs[0], certs, null, tid).isCertificateValid()) {
                    throw new CertificateException("Certificate not valid.");
                }
            } catch (PKIException e) {
                log.warn("Failed to validate certificate.", e);
                throw new CertificateException("Failed to validate certificate. " + e.getMessage());
            }

        }

    }

    @Override
    public X509Certificate[] getAcceptedIssuers() {

        if (pkiProfile == null) {
            log.warn("No PKI profile set. Configuration error.");
            return new X509Certificate[] {};
        }

        TransactionId tid = new MDCTransactionId();

        try {

            TrustStore trustStore = TrustStoreFactory.getInstance(pkiProfile.getTrustStoreProfile(), tid);
            @SuppressWarnings("unchecked")
            Set<X509Certificate> certs = trustStore.getTrustedCertificates(tid);
            return certs.toArray(new X509Certificate[certs.size()]);
        } catch (TrustStoreException e) {
            log.warn("Failed to get list of accepted issuers.", e);
            return new X509Certificate[] {};
        } catch (ClassCastException e) {
            log.error("Failed to cast list of accepted issuers.", e);
            return new X509Certificate[] {};
        }
    }

    private static iaik.x509.X509Certificate[] convertCerts(X509Certificate[] certs) throws CertificateException {
        iaik.x509.X509Certificate[] retVal = new iaik.x509.X509Certificate[certs.length];
        int i = 0;
        for (X509Certificate cert : certs) {
            if (cert instanceof iaik.x509.X509Certificate) {
                retVal[i++] = (iaik.x509.X509Certificate) cert;
            } else {
                retVal[i++] = new iaik.x509.X509Certificate(cert.getEncoded());
            }
        }
        return retVal;
    }

    private static class MDCTransactionId implements TransactionId {
        @Override
        public String getLogID() {
            String sessionId = MDC.get("SessionId");
            return (sessionId != null) ? sessionId : "PKITrustManager";
        }
    }
}