org.sakaiproject.mbm.servlet.SakaiToolServlet.java Source code

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Here is the source code for org.sakaiproject.mbm.servlet.SakaiToolServlet.java

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/****************************************************************************** 
 * Copyright 2015 sakaiproject.org Licensed under the Educational
 * Community 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://opensource.org/licenses/ECL-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 org.sakaiproject.mbm.servlet;

import java.io.IOException;
import java.util.Enumeration;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;

import lombok.extern.apachecommons.CommonsLog;

import org.apache.commons.lang.StringUtils;
import org.sakaiproject.tool.api.Tool;

/**
 * SakaiToolServlet
 * 
 * This Servlet is used to forward requests from the portal to the
 * approriate servlet context.
 * 
 * @author Earle Nietzel
 *         (earle.nietzel@gmail.com)
 *
 */
@CommonsLog
@SuppressWarnings("serial")
public class SakaiToolServlet extends HttpServlet {

    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        if (log.isDebugEnabled()) {
            StringBuilder headers = new StringBuilder("Headers [");
            StringBuilder params = new StringBuilder("Params [");

            Enumeration<String> headerNames = req.getHeaderNames();
            while (headerNames.hasMoreElements()) {
                String s = headerNames.nextElement();
                headers.append(s).append("={")
                        .append(StringUtils.isNotEmpty(req.getHeader(s)) ? req.getHeader(s) : "null").append("},");
            }
            headers.append("]");

            Enumeration<String> paramNames = req.getParameterNames();
            while (paramNames.hasMoreElements()) {
                String s = paramNames.nextElement();
                params.append(s).append("={")
                        .append(StringUtils.isNotEmpty(req.getParameter(s)) ? req.getParameter(s) : "null")
                        .append("},");
            }
            params.append("]");

            log.debug(new StringBuilder()
                    .append("SakaiToolServlet: service(HttpServletRequest, HttpServletResponse)\n")
                    .append("context path = ").append(req.getContextPath()).append("\n").append("request path = ")
                    .append(StringUtils.isNotEmpty(req.getPathInfo()) ? req.getPathInfo() : "null").append("\n")
                    .append("headers      = ").append(headers).append("\n").append("params       = ").append(params)
                    .append("\n").append("content type = ")
                    .append(StringUtils.isNotEmpty(req.getContentType()) ? req.getContentType() : "null")
                    .append("\n").append("method       = ").append(req.getMethod()).append("\n")
                    .append("query        = ")
                    .append(StringUtils.isNotEmpty(req.getQueryString()) ? req.getQueryString() : "null")
                    .append("\n").append("request url  = ").append(req.getRequestURL()).append("\n")
                    .append("request uri  = ").append(req.getRequestURI()).append("\n").append("locale       = ")
                    .append(req.getLocale()).append("\n"));
        }

        final String startPage = StringUtils.isNotEmpty(getInitParameter("index")) ? getInitParameter("index")
                : "/";
        final String contextPath = req.getContextPath();

        req.setAttribute(Tool.NATIVE_URL, Tool.NATIVE_URL);

        HttpServletRequest wrappedReq = new HttpServletRequestWrapper(req) {
            public String getContextPath() {
                return contextPath;
            }
        };

        if (StringUtils.isEmpty(req.getPathInfo())) {
            resp.sendRedirect(contextPath + startPage);
        } else {
            RequestDispatcher dispatcher;
            if (StringUtils.isEmpty(req.getPathInfo())) {
                dispatcher = req.getRequestDispatcher("/");
            } else {
                dispatcher = req.getRequestDispatcher(req.getPathInfo());
            }
            dispatcher.forward(wrappedReq, resp);
        }
    }
}