| /* |
| * 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.nifi.registry.jetty.headers; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| 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.HttpServletResponse; |
| import java.io.IOException; |
| |
| /** |
| * A filter to apply the X-Frame-Options header. |
| * |
| */ |
| public class XFrameOptionsFilter implements Filter { |
| private static final String HEADER = "X-Frame-Options"; |
| private static final String POLICY = "SAMEORIGIN"; |
| |
| private static final Logger logger = LoggerFactory.getLogger(XFrameOptionsFilter.class); |
| |
| @Override |
| public void doFilter(final ServletRequest req, final ServletResponse resp, final FilterChain filterChain) |
| throws IOException, ServletException { |
| |
| final HttpServletResponse response = (HttpServletResponse) resp; |
| response.setHeader(HEADER, POLICY); |
| |
| filterChain.doFilter(req, resp); |
| } |
| |
| @Override |
| public void init(final FilterConfig config) { |
| } |
| |
| @Override |
| public void destroy() { |
| } |
| } |