com.mobileman.filter.SecurityCheckFilter.java Source code

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Here is the source code for com.mobileman.filter.SecurityCheckFilter.java
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/*******************************************************************************
 * Copyright 2015 MobileMan GmbH
 * www.mobileman.com
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package com.mobileman.filter;

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.apache.commons.lang.StringUtils;

import com.mobileman.projecth.web.model.DataHolder;

public class SecurityCheckFilter implements Filter {

    @Override
    public void destroy() {
    }

    @Override
    public void init(FilterConfig fc) throws ServletException {
        // servletContext = fc.getServletContext();
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain)
            throws IOException, ServletException {

        HttpServletRequest rq1 = (HttpServletRequest) request;
        String requestURI = rq1.getRequestURI().toLowerCase();
        DataHolder holder = new DataHolder(rq1);
        boolean error = false;
        if (requestURI.contains("/patient/")) {
            //check patient loaded         
            if (!holder.isPatient()) {
                error = true;
            }
        } else if (requestURI.contains("/arzt/")) {
            //check doctor loaded
            if (!holder.isDoctor()) {
                error = true;
            }
        } else if (requestURI.contains("/admin/") && !requestURI.contains("/admin/anmeldung")) {
            //check admin loaded
            if (!holder.isAdmin()) {
                error = true;
            }
        }

        ///////////////
        if (requestURI.contains("/public")) {
            //redirect to /behandlung
            StringBuffer sb = rq1.getRequestURL();
            String newUrl = StringUtils.replace(sb.toString(), "/public", "/behandlung");
            java.io.PrintWriter out = response.getWriter();
            response.setContentType("text/html");

            out.println("<html>");
            out.println("<head>");
            out.println("<meta http-equiv=\"refresh\" content=\"0;url=");
            out.print(newUrl);
            out.println("\" />");
            out.println("</head>");
            out.println("<body>");
            out.println("</body>");
            out.println("</html>");

            return;
        }

        if (error) {
            //redirect
            request.getRequestDispatcher("/").forward(request, response);
            return;
        }
        filterChain.doFilter(request, response);
    }
}