test.be.fedict.eid.applet.model.FilesSignatureServiceBean.java Source code

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Here is the source code for test.be.fedict.eid.applet.model.FilesSignatureServiceBean.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 test.be.fedict.eid.applet.model;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.cert.X509Certificate;
import java.util.LinkedList;
import java.util.List;

import javax.ejb.Local;
import javax.ejb.Stateless;
import javax.security.jacc.PolicyContext;
import javax.security.jacc.PolicyContextException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.commons.codec.binary.Hex;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.jboss.ejb3.annotation.LocalBinding;

import be.fedict.eid.applet.service.spi.DigestInfo;
import be.fedict.eid.applet.service.spi.SignatureService;

@Stateless
@Local(SignatureService.class)
@LocalBinding(jndiBinding = "test/eid/applet/model/FilesSignatureServiceBean")
public class FilesSignatureServiceBean implements SignatureService {

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

    public void postSign(byte[] signatureValue, List<X509Certificate> signingCertificateChain) {
        LOG.debug("postSign");

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

        String signatureValueStr = new String(Hex.encodeHex(signatureValue));

        HttpSession session = httpServletRequest.getSession();
        session.setAttribute("SignatureValue", signatureValueStr);
        session.setAttribute("SigningCertificateChain", signingCertificateChain);
    }

    public DigestInfo preSign(List<DigestInfo> digestInfos, List<X509Certificate> signingCertificateChain)
            throws NoSuchAlgorithmException {
        LOG.debug("preSign");

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

        HttpSession session = httpServletRequest.getSession();
        String signDigestAlgo = (String) session.getAttribute("signDigestAlgo");
        LOG.debug("signature digest algo: " + signDigestAlgo);

        List<String> fileDescriptions = new LinkedList<String>();
        MessageDigest messageDigest = MessageDigest.getInstance(signDigestAlgo, new BouncyCastleProvider());
        for (DigestInfo digestInfo : digestInfos) {
            LOG.debug("processing digest for: " + digestInfo.description);
            fileDescriptions.add(digestInfo.description + "\n");
            messageDigest.update(digestInfo.digestValue);
            /*
             * XMLDSig, XAdES or PDF is possible here...
             */
        }
        byte[] digestValue = messageDigest.digest();

        session.setAttribute("signedFiles", fileDescriptions);

        String description = "Local Test Files";
        return new DigestInfo(digestValue, signDigestAlgo, description);
    }

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

        HttpSession session = httpServletRequest.getSession();
        String filesDigestAlgo = (String) session.getAttribute("filesDigestAlgo");
        LOG.debug("files digest algo: " + filesDigestAlgo);

        return filesDigestAlgo;
    }

    public void setHttpSessionObject(Object session) {

    }
}