| /* |
| * 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.cocoon.reading; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Map; |
| |
| import javax.servlet.http.HttpServletRequest; |
| |
| import org.apache.avalon.framework.parameters.Parameters; |
| import org.apache.cocoon.ProcessingException; |
| import org.apache.cocoon.environment.Context; |
| import org.apache.cocoon.environment.ObjectModelHelper; |
| import org.apache.cocoon.environment.Response; |
| import org.apache.cocoon.environment.SourceResolver; |
| import org.apache.cocoon.environment.http.HttpEnvironment; |
| import org.xml.sax.SAXException; |
| |
| |
| /** |
| * The <code>RequestReader</code> component is used to serve binary data |
| * from the Http request |
| */ |
| public class RequestReader extends AbstractReader { |
| |
| protected int bufferSize = 512; |
| |
| protected Response response; |
| |
| protected HttpServletRequest httpRequest; |
| |
| /** |
| * Setup the reader The resource is opened to get an |
| * <code>HttpServletRequest</code> |
| */ |
| public void setup(SourceResolver resolver, Map objectModel, String src, |
| Parameters par) throws ProcessingException, SAXException, IOException { |
| super.setup(resolver, objectModel, src, par); |
| |
| this.response = ObjectModelHelper.getResponse(objectModel); |
| |
| this.httpRequest = (HttpServletRequest) objectModel |
| .get(HttpEnvironment.HTTP_REQUEST_OBJECT); |
| |
| if (httpRequest == null) { |
| throw new ProcessingException( |
| "This feature is only available in an http environment."); |
| } |
| } |
| |
| /** |
| * Recyclable |
| */ |
| public void recycle() { |
| this.httpRequest = null; |
| super.recycle(); |
| } |
| |
| protected void processStream(InputStream inputStream) throws IOException, |
| ProcessingException { |
| |
| byte[] buffer = new byte[bufferSize]; |
| int length = -1; |
| |
| long contentLength = httpRequest.getContentLength(); |
| |
| if (contentLength != -1) { |
| response.setHeader("Content-Length", Long.toString(contentLength)); |
| } |
| |
| while ((length = inputStream.read(buffer)) > -1) { |
| out.write(buffer, 0, length); |
| } |
| out.flush(); |
| } |
| |
| /** |
| * Generates the requested resource. |
| */ |
| public void generate() throws IOException, ProcessingException { |
| try { |
| InputStream inputStream = httpRequest.getInputStream(); |
| |
| try { |
| processStream(inputStream); |
| } finally { |
| if (inputStream != null) { |
| inputStream.close(); |
| } |
| } |
| |
| } catch (IOException e) { |
| getLogger() |
| .debug( |
| "Received an IOException, assuming client severed connection on purpose"); |
| } |
| } |
| |
| /** |
| * Returns the mime-type of the resource in process. |
| */ |
| public String getMimeType() { |
| Context ctx = ObjectModelHelper.getContext(objectModel); |
| if (ctx != null) { |
| final String mimeType = ctx.getMimeType(source); |
| if (mimeType != null) { |
| return mimeType; |
| } |
| } |
| return null; |
| } |
| } |