| /* |
| * 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.ambari.server.api; |
| |
| import com.sun.jersey.spi.container.ContainerRequest; |
| import com.sun.jersey.spi.container.ContainerRequestFilter; |
| import org.apache.ambari.server.api.services.ResultStatus; |
| import org.apache.ambari.server.api.services.serializers.JsonSerializer; |
| |
| import javax.ws.rs.WebApplicationException; |
| import javax.ws.rs.core.MediaType; |
| import javax.ws.rs.core.Response; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| public class AmbariCsrfProtectionFilter implements ContainerRequestFilter { |
| private static final Set<String> IGNORED_METHODS; |
| private static final String CSRF_HEADER = "X-Requested-By"; |
| private static final String ERROR_MESSAGE = "CSRF protection is turned on. " + CSRF_HEADER + " HTTP header is required."; |
| private static final JsonSerializer JSON_SERIALIZER = new JsonSerializer(); |
| |
| static { |
| HashSet<String> methods = new HashSet<String>(); |
| methods.add("GET"); |
| methods.add("OPTIONS"); |
| methods.add("HEAD"); |
| |
| IGNORED_METHODS = Collections.unmodifiableSet(methods); |
| |
| } |
| |
| @Override |
| public ContainerRequest filter(ContainerRequest containerRequest) { |
| if (!IGNORED_METHODS.contains(containerRequest.getMethod()) && |
| !containerRequest.getRequestHeaders().containsKey(CSRF_HEADER)) { |
| throw new WebApplicationException(Response.status(Response.Status.BAD_REQUEST).entity( |
| JSON_SERIALIZER.serializeError(new ResultStatus(ResultStatus.STATUS.BAD_REQUEST, ERROR_MESSAGE)) |
| ).type(MediaType.TEXT_PLAIN_TYPE).build()); |
| } |
| return containerRequest; |
| } |
| } |