001/*
002 * ModeShape (http://www.modeshape.org)
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *       http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.modeshape.web;
017
018import java.io.IOException;
019import java.io.InputStream;
020import java.io.PrintWriter;
021import java.util.logging.Logger;
022import javax.jcr.Binary;
023import javax.jcr.Node;
024import javax.jcr.PathNotFoundException;
025import javax.jcr.Property;
026import javax.jcr.Session;
027import javax.servlet.ServletException;
028import javax.servlet.http.HttpServlet;
029import javax.servlet.http.HttpServletRequest;
030import javax.servlet.http.HttpServletResponse;
031import org.modeshape.web.server.Connector;
032
033/**
034 *
035 * @author kulikov
036 */
037public class BinaryContentServlet extends HttpServlet {
038    
039    private static final long serialVersionUID = 1L;
040    private static Logger log = Logger.getLogger("Binary");
041    
042    /**
043     * Processes requests for both HTTP
044     * <code>GET</code> and
045     * <code>POST</code> methods.
046     *
047     * @param request servlet request
048     * @param response servlet response
049     * @throws ServletException if a servlet-specific error occurs
050     * @throws IOException if an I/O error occurs
051     */
052    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
053            throws ServletException, IOException {
054            log.severe("Binary content has been requested");
055        
056        String repository = request.getParameter("repository");
057        String workspace = request.getParameter("workspace");
058        String path = request.getParameter("path");
059        String property = request.getParameter("property");
060
061        Connector connector = (Connector) request.getSession().getAttribute("connector");
062        try {
063            Session session = connector.find(repository).session(workspace);
064            Node node = session.getNode(path);
065
066            Property p;
067            try {
068                p = node.getProperty(property);
069            } catch (PathNotFoundException e) {
070                response.setContentType("text/html");
071                PrintWriter writer = response.getWriter();
072                writer.write("<html>");
073                writer.write("<p>Content not found or recently removed</p>");
074                writer.write("</html>");
075                return;
076            }
077            
078            Binary binary = p.getBinary();
079
080
081            InputStream in = binary.getStream();
082            String contentType = node.getProperty("jcr:mimeType").getString();
083
084            response.setContentType(contentType);
085
086            int b;
087            while ((b = in.read()) != -1) {
088                response.getOutputStream().write(b);
089            }
090
091            log.severe("Sent binary content");
092            binary.dispose();
093
094        } catch (Exception e) {
095            throw new ServletException(e);
096        }
097    }
098
099    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
100    /**
101     * Handles the HTTP
102     * <code>GET</code> method.
103     *
104     * @param request servlet request
105     * @param response servlet response
106     * @throws ServletException if a servlet-specific error occurs
107     * @throws IOException if an I/O error occurs
108     */
109    @Override
110    protected void doGet(HttpServletRequest request, HttpServletResponse response)
111            throws ServletException, IOException {
112        processRequest(request, response);
113    }
114
115    /**
116     * Handles the HTTP
117     * <code>POST</code> method.
118     *
119     * @param request servlet request
120     * @param response servlet response
121     * @throws ServletException if a servlet-specific error occurs
122     * @throws IOException if an I/O error occurs
123     */
124    @Override
125    protected void doPost(HttpServletRequest request, HttpServletResponse response)
126            throws ServletException, IOException {
127        processRequest(request, response);
128    }
129
130    /**
131     * Returns a short description of the servlet.
132     *
133     * @return a String containing servlet description
134     */
135    @Override
136    public String getServletInfo() {
137        return "Short description";
138    }// </editor-fold>
139}