| /* |
| * 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.jena.fuseki.auth; |
| |
| import java.util.Queue; |
| import java.util.concurrent.ConcurrentLinkedQueue; |
| |
| /** |
| * An {@link AuthPolicy} that combines a number of {@link AuthPolicy AuthPolicies}. |
| * All policies must authorize access for this policy to allow access. |
| */ |
| public class AuthPolicyList implements AuthPolicy { |
| |
| // Thread safe. |
| // Use a |
| private final Queue<AuthPolicy> policies = new ConcurrentLinkedQueue<>(); |
| |
| /** |
| * Merge {@link AuthPolicy AuthPolicies}, returning a combination of the two if both are non-null. |
| * If either is null, return the other. |
| * If both null, return null. |
| */ |
| public static AuthPolicy merge(AuthPolicy policy1, AuthPolicy policy2) { |
| if ( policy1 == null ) |
| return policy2; |
| if ( policy2 == null ) |
| return policy1; |
| if ( policy1 instanceof AuthPolicyList) { |
| AuthPolicyList x = new AuthPolicyList((AuthPolicyList)policy1); |
| x.add(policy2); |
| return x; |
| } |
| AuthPolicyList x = new AuthPolicyList(); |
| x.add(policy1); |
| x.add(policy2); |
| return x; |
| } |
| |
| private AuthPolicyList(AuthPolicyList other) { |
| policies.addAll(other.policies); |
| } |
| |
| public AuthPolicyList() { } |
| |
| public void add(AuthPolicy policy) { |
| policies.add(policy); |
| } |
| |
| @Override |
| public boolean isAllowed(String user) { |
| for ( AuthPolicy policy : policies ) { |
| if ( ! policy.isAllowed(user) ) |
| return false; |
| } |
| return true; |
| } |
| } |