/*

  * Copyright 2007-2008 The Kuali Foundation

  *

  * 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://www.opensource.org/licenses/ecl2.php

  *

  * 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.kuali.rice.ksb.security.admin;

 import java.io.IOException;

 import javax.servlet.ServletException;

 import javax.servlet.http.HttpServlet;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 /**

  * A servlet which returns a client {@link java.security.KeyStore} object to the user as a file.  It takes in

  * the KeyStore file as a session attribute byte array.

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public class ExportServlet extends HttpServlet {

     private static final long serialVersionUID = 3234778044685975458L;

     private static final String MIME_TYPE = "application/octet-stream";

 //    application/pkix-cert

 //    application/pkix-crl

     public static final String CLIENT_KEYSTORE_DATA = "ClientKeyStoreData";

     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

         byte[] clientKeyStoreData = (byte[])request.getSession().getAttribute(CLIENT_KEYSTORE_DATA);

         request.getSession().removeAttribute(CLIENT_KEYSTORE_DATA);

         if (clientKeyStoreData == null) {

             throw new ServletException("No keystore file was specified.");

         }

         response.setContentType(MIME_TYPE);

         response.setContentLength(clientKeyStoreData.length);

         response.setHeader("Content-disposition", "attachment; filename="+extractFileName(request));

         response.getOutputStream().write(clientKeyStoreData);

         response.getOutputStream().close();

     }

     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

         doPost(request, response);

     }

     private String extractFileName(HttpServletRequest request) {

         String path = request.getPathInfo();

         int index = path.lastIndexOf('/');

         if (index >= 0) {

             path = path.substring(index+1);

         }

         return path;

     }

     public static final String generateExportPath(String keystoreFileName, HttpServletRequest request) {

         String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + request.getContextPath();

         return basePath + "/exportsecurity/"+keystoreFileName;

     }

 }