| /* |
| * 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.web.mapper; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.nifi.registry.security.authorization.exception.AccessDeniedException; |
| import org.apache.nifi.registry.security.authorization.user.NiFiUser; |
| import org.apache.nifi.registry.security.authorization.user.NiFiUserUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.stereotype.Component; |
| |
| import javax.ws.rs.core.Response; |
| import javax.ws.rs.core.Response.Status; |
| import javax.ws.rs.ext.ExceptionMapper; |
| import javax.ws.rs.ext.Provider; |
| |
| /** |
| * Maps access denied exceptions into a client response. |
| */ |
| @Component |
| @Provider |
| public class AccessDeniedExceptionMapper implements ExceptionMapper<AccessDeniedException> { |
| |
| private static final Logger logger = LoggerFactory.getLogger(AccessDeniedExceptionMapper.class); |
| |
| @Override |
| public Response toResponse(AccessDeniedException exception) { |
| // get the current user |
| NiFiUser user = NiFiUserUtils.getNiFiUser(); |
| |
| // if the user was authenticated - forbidden, otherwise unauthorized... the user may be null if the |
| // AccessDeniedException was thrown from a /access endpoint that isn't subject to the security |
| // filter chain. for instance, one that performs kerberos negotiation |
| final Status status; |
| if (user == null || user.isAnonymous()) { |
| status = Status.UNAUTHORIZED; |
| } else { |
| status = Status.FORBIDDEN; |
| } |
| |
| final String identity; |
| if (user == null) { |
| identity = "<no user found>"; |
| } else { |
| identity = user.toString(); |
| } |
| |
| logger.info(String.format("%s does not have permission to access the requested resource. %s Returning %s response.", identity, exception.getMessage(), status)); |
| |
| if (logger.isDebugEnabled()) { |
| logger.debug(StringUtils.EMPTY, exception); |
| } |
| |
| return Response.status(status) |
| .entity(String.format("%s Contact the system administrator.", exception.getMessage())) |
| .type("text/plain") |
| .build(); |
| } |
| |
| } |