| |
| /* |
| * 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 userguide.springboot.security.webservices; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.springframework.http.server.ServletServerHttpRequest; |
| import org.springframework.web.filter.OncePerRequestFilter; |
| import org.springframework.web.util.ContentCachingRequestWrapper; |
| import org.springframework.web.util.ContentCachingResponseWrapper; |
| import org.springframework.web.util.WebUtils; |
| import org.springframework.security.web.RedirectStrategy; |
| |
| import javax.servlet.FilterChain; |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import java.io.IOException; |
| import java.io.UnsupportedEncodingException; |
| import java.util.UUID; |
| |
| public class HTTPPostOnlyRejectionFilter extends OncePerRequestFilter { |
| |
| private static Log logger = LogFactory.getLog(HTTPPostOnlyRejectionFilter.class); |
| |
| private final RedirectStrategy redirectStrategy = new NoRedirectStrategy(); |
| |
| public HTTPPostOnlyRejectionFilter() { |
| super(); |
| } |
| |
| @Override |
| protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException { |
| |
| String uuid = UUID.randomUUID().toString(); |
| String logPrefix = "HTTPPostOnlyRejectionFilter.doFilterInternal , uuid: " + uuid + " , "; |
| |
| logger.trace(logPrefix + "starting ... "); |
| |
| if (!request.getMethod().equals("POST")) { |
| |
| String ip = "unknown"; |
| if (request.getHeader("X-Forwarded-For") != null) { |
| ip = request.getHeader("X-Forwarded-For"); |
| } |
| logger.trace(logPrefix + |
| "this is not a POST request, ignoring with an HTTP 200 response, " + |
| " , on IP from X-Forwarded-For: " + request.getRequestURI() + |
| " , request.getRequestURI() : " + request.getRequestURI() + |
| " , request.getMethod() : " + request.getMethod()); |
| |
| response.setContentType("application/json;charset=UTF-8"); |
| response.getWriter().print("HTTP requests that are not POST are ignored"); |
| response.getWriter().flush(); |
| this.redirectStrategy.sendRedirect((HttpServletRequest) request, (HttpServletResponse) response, "/"); |
| |
| } else { |
| filterChain.doFilter(request, response); |
| } |
| } |
| |
| protected class NoRedirectStrategy implements RedirectStrategy { |
| |
| @Override |
| public void sendRedirect(HttpServletRequest request, HttpServletResponse response, String url) |
| throws IOException { |
| // do nothing |
| } |
| |
| } |
| } |