001 /*
002 * Sonar, open source software quality management tool.
003 * Copyright (C) 2008-2012 SonarSource
004 * mailto:contact AT sonarsource DOT com
005 *
006 * Sonar is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * Sonar is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public
017 * License along with Sonar; if not, write to the Free Software
018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02
019 */
020 package org.sonar.server.plugins;
021
022 import org.apache.commons.io.IOUtils;
023 import org.apache.commons.lang.StringUtils;
024 import org.slf4j.Logger;
025 import org.slf4j.LoggerFactory;
026 import org.sonar.server.platform.Platform;
027
028 import javax.servlet.ServletException;
029 import javax.servlet.http.HttpServlet;
030 import javax.servlet.http.HttpServletRequest;
031 import javax.servlet.http.HttpServletResponse;
032 import java.io.IOException;
033 import java.io.InputStream;
034 import java.io.OutputStream;
035
036 public class StaticResourcesServlet extends HttpServlet {
037
038 private static final Logger LOG = LoggerFactory.getLogger(StaticResourcesServlet.class);
039 private static final long serialVersionUID = -2577454614650178426L;
040
041 @Override
042 public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
043 String pluginKey = getPluginKey(request);
044 String resource = getResourcePath(request);
045
046 DefaultServerPluginRepository pluginRepository = Platform.getInstance().getContainer().getComponentByType(DefaultServerPluginRepository.class);
047 ClassLoader classLoader = pluginRepository.getClassLoader(pluginKey);
048 if (classLoader == null) {
049 LOG.error("Plugin not found: " + pluginKey);
050 response.sendError(HttpServletResponse.SC_NOT_FOUND);
051 return;
052 }
053 InputStream in = null;
054 OutputStream out = null;
055 try {
056 in = classLoader.getResourceAsStream(resource);
057 if (in != null) {
058 out = response.getOutputStream();
059 IOUtils.copy(in, out);
060 } else {
061 LOG.error("Unable to find resource '" + resource + "' in plugin '" + pluginKey + "'");
062 response.sendError(HttpServletResponse.SC_NOT_FOUND);
063 }
064 } catch (Exception e) {
065 LOG.error("Unable to load static resource '" + resource + "' from plugin '" + pluginKey + "'", e);
066 response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
067 } finally {
068 IOUtils.closeQuietly(in);
069 IOUtils.closeQuietly(out);
070 }
071 }
072
073 /**
074 * @return part of request URL after servlet path
075 */
076 protected String getPluginKeyAndResourcePath(HttpServletRequest request) {
077 return StringUtils.substringAfter(request.getRequestURI(), request.getContextPath() + request.getServletPath() + "/");
078 }
079
080 protected String getPluginKey(HttpServletRequest request) {
081 return StringUtils.substringBefore(getPluginKeyAndResourcePath(request), "/");
082 }
083
084 /**
085 * Note that returned value should not have a leading "/" - see {@link Class#resolveName(String)}.
086 */
087 protected String getResourcePath(HttpServletRequest request) {
088 return "static/" + StringUtils.substringAfter(getPluginKeyAndResourcePath(request), "/");
089 }
090 }