001/*
002 * oauth2-oidc-sdk
003 *
004 * Copyright 2012-2016, Connect2id Ltd and contributors.
005 *
006 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use
007 * this file except in compliance with the License. You may obtain a copy of the
008 * License at
009 *
010 *    http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software distributed
013 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
014 * CONDITIONS OF ANY KIND, either express or implied. See the License for the
015 * specific language governing permissions and limitations under the License.
016 */
017
018package com.nimbusds.openid.connect.sdk.federation.policy.operations;
019
020
021import java.util.*;
022
023import com.nimbusds.openid.connect.sdk.federation.policy.language.OperationName;
024import com.nimbusds.openid.connect.sdk.federation.policy.language.PolicyOperation;
025import com.nimbusds.openid.connect.sdk.federation.policy.language.PolicyViolationException;
026import com.nimbusds.openid.connect.sdk.federation.policy.language.StringOperation;
027
028
029/**
030 * One-of (one_of) operation.
031 *
032 * <p>Example policy:
033 *
034 * <pre>
035 * "request_object_signing_alg" : { "one_of" : [ "ES256", "ES384", "ES512" ] }
036 * </pre>
037 *
038 * <p>Input:
039 *
040 * <pre>
041 * "request_object_signing_alg" : "ES384"
042 * </pre>
043 *
044 * <p>Result:
045 *
046 * <pre>
047 * "request_object_signing_alg" : "ES384"
048 * </pre>
049 *
050 * <p>Related specifications:
051 *
052 * <ul>
053 *     <li>OpenID Connect Federation 1.0, section 4.1.2.
054 * </ul>
055 */
056public class OneOfOperation extends AbstractSetBasedOperation implements StringOperation {
057        
058        
059        public static final OperationName NAME = new OperationName("one_of");
060        
061        
062        @Override
063        public OperationName getOperationName() {
064                return NAME;
065        }
066        
067        
068        @Override
069        public Map.Entry<String, Object> toJSONObjectEntry() {
070                if (configType == null) {
071                        throw new IllegalStateException("The policy is not initialized");
072                }
073                return new AbstractMap.SimpleImmutableEntry<>(getOperationName().getValue(), (Object) getStringListConfiguration());
074        }
075        
076        
077        @Override
078        public PolicyOperation merge(final PolicyOperation other) throws PolicyViolationException {
079                
080                OneOfOperation otherTyped = Utils.castForMerge(other, OneOfOperation.class);
081                
082                // intersect
083                Set<String> combinedConfig = new LinkedHashSet<>(setConfig);
084                combinedConfig.retainAll(otherTyped.getStringListConfiguration());
085                
086                OneOfOperation mergedPolicy = new OneOfOperation();
087                mergedPolicy.configure(new LinkedList<>(combinedConfig));
088                return mergedPolicy;
089        }
090        
091        
092        @Override
093        public String apply(final String value)
094                throws PolicyViolationException {
095                
096                if (setConfig == null) {
097                        throw new IllegalStateException("The policy is not initialized");
098                }
099                
100                if (value == null) {
101                        throw new PolicyViolationException("Value not set");
102                }
103                
104                if (! setConfig.contains(value)) {
105                        throw new PolicyViolationException("Value " + value + " not in policy list: " + setConfig);
106                }
107                
108                return value;
109        }
110}