FormUrlEncodedFilter.java

/*
 * GovWay - A customizable API Gateway 
 * https://govway.org
 * 
 * Copyright (c) 2005-2025 Link.it srl (https://link.it). 
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3, as published by
 * the Free Software Foundation.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 *
 */
package org.openspcoop2.pdd.services.connector;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

import org.openspcoop2.pdd.config.OpenSPCoop2Properties;


/**
 * FormUrlEncodedFilter
 * 
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public class FormUrlEncodedFilter implements Filter {

    /*
     * NOTA: da Wilfdly 8.1 questo filtro deve essere abilitato nella configurazione:
     * In the standalone/configuration/standalone.xml file change the servlet-container XML element so that it has the attribute allow-non-standard-wrappers="true".
     * 
     *  <servlet-container name="default" allow-non-standard-wrappers="true">
     *           ...
     *  </servlet-container>
     **/
    
    @Override
    public void destroy() {
    }

    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
            throws IOException, ServletException {
        
        boolean doFilter = false;
        try {
            OpenSPCoop2Properties op2PropertieS = OpenSPCoop2Properties.getInstance();
            doFilter = op2PropertieS.isFormUrlEncodedFilterEnabled();
        }catch(Throwable t) {}
        
        
        if(doFilter && req instanceof HttpServletRequest) {
            HttpServletRequest httpServletRequest = (HttpServletRequest) req;
            if(FormUrlEncodedHttpServletRequest.isFormUrlEncodedRequest(httpServletRequest)) {
                req = FormUrlEncodedHttpServletRequest.convert(httpServletRequest);
            }
        }
        
        chain.doFilter(req, res);
    }

    @Override
    public void init(FilterConfig config) throws ServletException {
    }

}