| /* |
| * 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.security; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| |
| import org.apache.ambari.server.security.authorization.User; |
| import org.springframework.security.core.Authentication; |
| import org.springframework.security.core.GrantedAuthority; |
| import org.springframework.security.core.context.SecurityContext; |
| import org.springframework.security.core.context.SecurityContextHolder; |
| import org.springframework.security.core.userdetails.UserDetails; |
| |
| /** |
| * Security related utilities. |
| */ |
| // TODO : combine with AuthorizationHelper. |
| public class SecurityHelperImpl implements SecurityHelper { |
| |
| /** |
| * The singleton instance. |
| */ |
| private static final SecurityHelper singleton = new SecurityHelperImpl(); |
| |
| |
| // ----- Constructors -------------------------------------------------- |
| |
| /** |
| * Hidden constructor. |
| */ |
| private SecurityHelperImpl() { |
| } |
| |
| |
| // ----- SecurityHelperImpl -------------------------------------------- |
| |
| public static SecurityHelper getInstance() { |
| return singleton; |
| } |
| |
| |
| // ----- SecurityHelper ------------------------------------------------ |
| |
| @Override |
| public String getCurrentUserName() { |
| SecurityContext ctx = SecurityContextHolder.getContext(); |
| Authentication authentication = ctx == null ? null : ctx.getAuthentication(); |
| Object principal = authentication == null ? null : authentication.getPrincipal(); |
| |
| String username; |
| if (principal instanceof UserDetails) { |
| username = ((UserDetails) principal).getUsername(); |
| } else if (principal instanceof User) { |
| username = ((User) principal).getUserName(); |
| } else { |
| username = principal == null ? "" : principal.toString(); |
| } |
| return username; |
| } |
| |
| @Override |
| public Collection<? extends GrantedAuthority> getCurrentAuthorities() |
| { |
| SecurityContext context = SecurityContextHolder.getContext(); |
| |
| Authentication authentication = context.getAuthentication(); |
| |
| if (context.getAuthentication() != null && context.getAuthentication().isAuthenticated()) { |
| return authentication.getAuthorities(); |
| } |
| return Collections.emptyList(); |
| } |
| } |