org.kalypso.mapserver.servlets.CGIServlet.java Source code

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Here is the source code for org.kalypso.mapserver.servlets.CGIServlet.java

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/*----------------    FILE HEADER KALYPSO ------------------------------------------
 *
 *  This file is part of kalypso.
 *  Copyright (C) 2004 by:
 *
 *  Technical University Hamburg-Harburg (TUHH)
 *  Institute of River and coastal engineering
 *  Denickestrae 22
 *  21073 Hamburg, Germany
 *  http://www.tuhh.de/wb
 *
 *  and
 *
 *  Bjoernsen Consulting Engineers (BCE)
 *  Maria Trost 3
 *  56070 Koblenz, Germany
 *  http://www.bjoernsen.de
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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 library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Contact:
 *
 *  E-Mail:
 *  belger@bjoernsen.de
 *  schlienger@bjoernsen.de
 *  v.doemming@tuhh.de
 *
 *  ---------------------------------------------------------------------------*/
package org.kalypso.mapserver.servlets;

import java.io.File;
import java.net.URL;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Set;

import org.apache.commons.collections.iterators.IteratorEnumeration;
import org.apache.commons.io.FileUtils;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jetty.servlets.CGI;

/**
 * A CGI servlet, which can be configured.
 *
 * @author Holger Albert
 */
public class CGIServlet extends CGI {
    @Override
    public String getInitParameter(final String name) {
        /* If the parameter has a value, always return it. */
        final String initParameter = super.getInitParameter(name);
        if (initParameter != null)
            return initParameter;

        /* If not (==null) return null, except if it is one of the following parameter. */
        if (!"cgibinResourceBase".equals(name) && !"Path".equals(name) && !"ENV_PROJ_LIB".equals(name)) //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
            return null;

        try {
            final URL cgibinResourceBase = Platform.getInstallLocation().getURL();
            final File file = FileUtils.toFile(cgibinResourceBase);

            if (!"ENV_PROJ_LIB".equals(name)) //$NON-NLS-1$
                return file.toString();

            return new File(file, "cgi-bin").toString(); //$NON-NLS-1$
        } catch (final Exception ex) {
            ex.printStackTrace();
            return null;
        }
    }

    @Override
    public Enumeration<String> getInitParameterNames() {
        final Set<String> results = new HashSet<>();

        final Enumeration<?> initParameterNames = super.getInitParameterNames();
        while (initParameterNames.hasMoreElements())
            results.add((String) initParameterNames.nextElement());

        if (!results.contains("ENV_PROJ_LIB")) //$NON-NLS-1$
            results.add("ENV_PROJ_LIB"); //$NON-NLS-1$

        return new IteratorEnumeration(results.iterator());
    }
}