| /** |
| * 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.hadoop.fs.http.server; |
| |
| |
| import org.apache.hadoop.fs.http.client.HttpFSFileSystem; |
| |
| import javax.servlet.Filter; |
| import javax.servlet.FilterChain; |
| import javax.servlet.FilterConfig; |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * Filter that Enforces the content-type to be application/octet-stream for |
| * POST and PUT requests. |
| */ |
| public class CheckUploadContentTypeFilter implements Filter { |
| |
| private static final Set<String> UPLOAD_OPERATIONS = new HashSet<String>(); |
| |
| static { |
| UPLOAD_OPERATIONS.add(HttpFSFileSystem.PostOpValues.APPEND.toString()); |
| UPLOAD_OPERATIONS.add(HttpFSFileSystem.PutOpValues.CREATE.toString()); |
| } |
| |
| /** |
| * Initializes the filter. |
| * <p/> |
| * This implementation is a NOP. |
| * |
| * @param config filter configuration. |
| * |
| * @throws ServletException thrown if the filter could not be initialized. |
| */ |
| @Override |
| public void init(FilterConfig config) throws ServletException { |
| } |
| |
| /** |
| * Enforces the content-type to be application/octet-stream for |
| * POST and PUT requests. |
| * |
| * @param request servlet request. |
| * @param response servlet response. |
| * @param chain filter chain. |
| * |
| * @throws IOException thrown if an IO error occurrs. |
| * @throws ServletException thrown if a servet error occurrs. |
| */ |
| @Override |
| public void doFilter(ServletRequest request, ServletResponse response, |
| FilterChain chain) |
| throws IOException, ServletException { |
| boolean contentTypeOK = true; |
| HttpServletRequest httpReq = (HttpServletRequest) request; |
| HttpServletResponse httpRes = (HttpServletResponse) response; |
| String method = httpReq.getMethod(); |
| if (method.equals("PUT") || method.equals("POST")) { |
| String op = httpReq.getParameter(HttpFSFileSystem.OP_PARAM); |
| if (op != null && UPLOAD_OPERATIONS.contains(op.toUpperCase())) { |
| if ("true".equalsIgnoreCase(httpReq.getParameter(HttpFSParams.DataParam.NAME))) { |
| String contentType = httpReq.getContentType(); |
| contentTypeOK = |
| HttpFSFileSystem.UPLOAD_CONTENT_TYPE.equalsIgnoreCase(contentType); |
| } |
| } |
| } |
| if (contentTypeOK) { |
| chain.doFilter(httpReq, httpRes); |
| } |
| else { |
| httpRes.sendError(HttpServletResponse.SC_BAD_REQUEST, |
| "Data upload requests must have content-type set to '" + |
| HttpFSFileSystem.UPLOAD_CONTENT_TYPE + "'"); |
| |
| } |
| } |
| |
| /** |
| * Destroys the filter. |
| * <p/> |
| * This implementation is a NOP. |
| */ |
| @Override |
| public void destroy() { |
| } |
| |
| } |