de.thorstenberger.examServer.webapp.action.SystemConfigSubmitAction.java Source code

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Here is the source code for de.thorstenberger.examServer.webapp.action.SystemConfigSubmitAction.java

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/*
    
Copyright (C) 2006 Thorsten Berger
    
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
    
This program 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 General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
/**
 *
 */
package de.thorstenberger.examServer.webapp.action;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.KeyStoreException;
import java.security.SignatureException;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.PdfWriter;

import de.thorstenberger.examServer.pdf.signature.SignPdf;
import de.thorstenberger.examServer.service.ConfigManager;
import de.thorstenberger.examServer.webapp.form.SystemConfigForm;

/**
 * @author Thorsten Berger
 *
 */
public class SystemConfigSubmitAction extends BaseAction {

    /* (non-Javadoc)
     * @see de.thorstenberger.examServer.webapp.action.BaseAction#execute(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    @Override
    public ActionForward execute(final ActionMapping mapping, final ActionForm form,
            final HttpServletRequest request, final HttpServletResponse response) throws Exception {

        final SystemConfigForm scf = (SystemConfigForm) form;
        final ConfigManager configManager = (ConfigManager) getBean("configManager");

        configManager.setTitle(scf.getTitle());
        configManager.setRemoteUserManagerURL(scf.getRemoteUserManagerURL());
        configManager.setLoadJVMOnStartup(scf.isLoadJVMOnStartup());
        configManager.setHTTPAuthURL(scf.getHttpAuthURL());
        configManager.setHTTPAuthMail(scf.getHttpAuthMail());
        configManager.setRadiusHost(scf.getRadiusHost());
        configManager.setRadiusSharedSecret(scf.getRadiusSharedSecret());
        configManager.setPDFSignatureInfos(scf.getSignatureSettings());
        configManager.setRadiusMailSuffixes(scf.getRadiusMailSuffixes());

        if ("Signatur testen".equals(scf.getTodo()))
            return createSignedPDF(mapping, request, response, configManager);

        final ActionMessages messages = new ActionMessages();
        messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("systemConfig.saved"));
        saveMessages(request, messages);

        return mapping.findForward("success");
    }

    /**
     * @param mapping
     * @param request
     * @param response
     * @param configManager
     * @return
     */
    private ActionForward createSignedPDF(final ActionMapping mapping, final HttpServletRequest request,
            final HttpServletResponse response, final ConfigManager configManager) {
        final ActionErrors errors = new ActionErrors();
        try {
            final ByteArrayOutputStream baos = new ByteArrayOutputStream();

            final Document pdf = new Document();
            PdfWriter.getInstance(pdf, baos);
            pdf.open();
            pdf.add(new Paragraph("Signaturtest."));
            pdf.close();

            final InputStream pdfIn = new ByteArrayInputStream(baos.toByteArray());
            baos.reset();
            SignPdf.signAndTimestamp(pdfIn, baos, configManager.getPDFSignatureInfos());
            // write signed pdf to response
            response.setContentType("application/pdf");
            // set an appropriate filename
            response.setHeader("Content-Disposition", "attachment; filename=signaturetest.pdf");
            response.getOutputStream().write(baos.toByteArray());
            return null;
        } catch (final DocumentException e) {
            addError(errors, e);
        } catch (final IOException e) {
            addError(errors, e);
        } catch (final SignatureException e) {
            addError(errors, e);
        } catch (final KeyStoreException e) {
            addError(errors, e);
        }
        saveMessages(request, errors);
        return mapping.findForward("success");
    }

    /**
     * @param errors
     * @param e
     */
    private void addError(final ActionErrors errors, final Exception e) {
        errors.add(ActionMessages.GLOBAL_MESSAGE,
                new ActionMessage("systemConfig.signature.error", e.getMessage()));
        log.warn("Could not test pdf signature settings.", e);
    }

}