be.fedict.eid.applet.beta.admin.AdministratorServiceBean.java Source code

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Here is the source code for be.fedict.eid.applet.beta.admin.AdministratorServiceBean.java

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/*
 * eID Applet Project.
 * Copyright (C) 2008-2009 FedICT.
 *
 * 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.eid.applet.beta.admin;

import java.security.PublicKey;
import java.security.cert.X509Certificate;
import java.util.List;

import javax.ejb.Local;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.security.auth.x500.X500Principal;
import javax.security.jacc.PolicyContext;
import javax.security.jacc.PolicyContextException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jboss.ejb3.annotation.LocalBinding;
import org.jboss.seam.security.Credentials;
import org.jboss.seam.util.Hex;

import be.fedict.eid.applet.service.spi.AuthenticationService;

/**
 * Authentication Services that manages administrator login.
 * 
 * @author Frank Cornelis
 * 
 */
@Stateless
@Local(AuthenticationService.class)
@LocalBinding(jndiBinding = "fedict/eid/applet/beta/AdministratorServiceBean")
public class AdministratorServiceBean implements AuthenticationService {

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

    @PersistenceContext
    private EntityManager entityManager;

    private void register(PublicKey publicKey, String serialNumber) {
        AdministratorEntity administratorEntity = new AdministratorEntity();
        administratorEntity.setPublicKey(publicKey.getEncoded());
        administratorEntity.setSerialNumber(serialNumber);
        this.entityManager.persist(administratorEntity);
    }

    private boolean isRegistered() {
        return false == this.entityManager.createQuery("FROM AdministratorEntity").getResultList().isEmpty();
    }

    public void validateCertificateChain(List<X509Certificate> certificateChain) throws SecurityException {
        /*
         * We're not using the entire PKI infrastructure here since we are in
         * control of the admin token ourselves.
         */
        X509Certificate adminCert = certificateChain.get(0);
        PublicKey adminPublicKey = adminCert.getPublicKey();
        String userId = getUserId(adminCert);
        if (isRegistered()) {
            LOG.debug("admin login");
        } else {
            LOG.debug("admin registration");
            register(adminPublicKey, userId);
        }

        String adminPassword = new String(Hex.encodeHex(adminPublicKey.getEncoded()));

        HttpServletRequest httpServletRequest;
        try {
            httpServletRequest = (HttpServletRequest) PolicyContext
                    .getContext("javax.servlet.http.HttpServletRequest");
        } catch (PolicyContextException e) {
            throw new RuntimeException("JACC error: " + e.getMessage());
        }

        HttpSession httpSession = httpServletRequest.getSession();
        Credentials credentials = (Credentials) httpSession.getAttribute("org.jboss.seam.security.credentials");

        LOG.debug("username: " + userId);
        /*
         * Pass the eID credentials to the JBoss Seam security framework.
         */
        credentials.setUsername(userId);
        credentials.setPassword(adminPassword);
    }

    private String getUserId(X509Certificate adminCert) {
        X500Principal userPrincipal = adminCert.getSubjectX500Principal();
        String name = userPrincipal.toString();
        int serialNumberValueBeginIdx = name.indexOf("SERIALNUMBER=") + "SERIALNUMBER=".length();
        int serialNumberValueEndIdx = name.indexOf(",", serialNumberValueBeginIdx);
        if (-1 == serialNumberValueEndIdx) {
            serialNumberValueEndIdx = name.length();
        }
        String userId = name.substring(serialNumberValueBeginIdx, serialNumberValueEndIdx);
        return userId;
    }
}