| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.sling.reseditor; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import javax.jcr.Node; |
| import javax.jcr.PathNotFoundException; |
| import javax.jcr.PropertyType; |
| import javax.jcr.RepositoryException; |
| import javax.jcr.ValueFormatException; |
| import javax.servlet.Servlet; |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletOutputStream; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Properties; |
| import org.apache.felix.scr.annotations.Property; |
| import org.apache.felix.scr.annotations.Service; |
| import org.apache.sling.api.SlingHttpServletRequest; |
| import org.apache.sling.api.SlingHttpServletResponse; |
| import org.apache.sling.api.resource.Resource; |
| import org.apache.sling.api.resource.ResourceNotFoundException; |
| import org.apache.sling.api.servlets.SlingSafeMethodsServlet; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Streams the content of the property specified by the request parameter |
| * 'property' to the response of the request. |
| */ |
| @Component |
| @Service(Servlet.class) |
| @Properties({ |
| @Property(name = "service.description", value = "Download Servlet for binary properties"), |
| @Property(name = "service.vendor", value = "The Apache Software Foundation"), |
| @Property(name = "sling.servlet.selectors", value = "property"), |
| @Property(name = "sling.servlet.extensions", value = "download"), |
| @Property(name = "sling.servlet.resourceTypes", value = "sling/servlet/default") |
| |
| }) |
| public class DownloadBinaryProperty extends SlingSafeMethodsServlet { |
| |
| private static final long serialVersionUID = -1L; |
| |
| /** default log */ |
| private final Logger log = LoggerFactory |
| .getLogger(DownloadBinaryProperty.class); |
| |
| @Override |
| protected void doGet(SlingHttpServletRequest request, |
| SlingHttpServletResponse response) throws ServletException, |
| IOException { |
| String propertyName = request.getParameter("property"); |
| if ("".equals(propertyName) || propertyName == null) |
| throw new ResourceNotFoundException("No property specified."); |
| |
| ServletOutputStream out = response.getOutputStream(); |
| Resource resource = request.getResource(); |
| Node currentNode = resource.adaptTo(Node.class); |
| javax.jcr.Property property = null; |
| try { |
| property = currentNode.getProperty(propertyName); |
| } catch (PathNotFoundException e) { |
| response.sendError(HttpServletResponse.SC_NOT_FOUND, "Not found."); |
| throw new ResourceNotFoundException("Not found."); |
| } catch (RepositoryException e) { |
| response.sendError(HttpServletResponse.SC_NOT_FOUND, "Not found."); |
| throw new ResourceNotFoundException("Not found."); |
| } |
| InputStream stream = null; |
| try { |
| if (property == null || property.getType() != PropertyType.BINARY) { |
| response.sendError(HttpServletResponse.SC_NOT_FOUND, "Not found."); |
| throw new ResourceNotFoundException("Not found."); |
| } |
| long length = property.getLength(); |
| if (length > 0) { |
| if (length < Integer.MAX_VALUE) { |
| response.setContentLength((int) length); |
| } else { |
| response.setHeader("Content-Length", String.valueOf(length)); |
| } |
| } |
| stream = property.getStream(); |
| byte[] buf = new byte[2048]; |
| int rd; |
| while ((rd = stream.read(buf)) >= 0) { |
| out.write(buf, 0, rd); |
| } |
| } catch (ValueFormatException e) { |
| response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, |
| "Error downloading the property content."); |
| log.debug("error reading the property " + property + " of path " |
| + resource.getPath(), e); |
| } catch (RepositoryException e) { |
| response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, |
| "Error downloading the property content."); |
| log.debug("error reading the property " + property + " of path " |
| + resource.getPath(), e); |
| } finally { |
| stream.close(); |
| } |
| |
| } |
| } |