| /** |
| * 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.cxf.fediz.core.saml; |
| |
| import java.security.PublicKey; |
| import java.security.cert.Certificate; |
| import java.security.cert.X509Certificate; |
| import java.util.List; |
| |
| import org.apache.wss4j.common.saml.OpenSAMLUtil; |
| import org.apache.wss4j.common.saml.SAMLKeyInfo; |
| import org.apache.wss4j.common.saml.SamlAssertionWrapper; |
| |
| /** |
| * Some SAML Utility methods |
| */ |
| public final class SAMLUtil { |
| |
| private SAMLUtil() { |
| // complete |
| } |
| |
| /** |
| * Check the holder-of-key requirements against the received assertion. The subject |
| * credential of the SAML Assertion must match a client certificate credential when |
| * 2-way TLS is used. |
| * @param assertionWrapper the SAML Assertion wrapper object |
| * @param tlsCerts The client certificates |
| */ |
| public static boolean checkHolderOfKey( |
| SamlAssertionWrapper assertionWrapper, |
| Certificate[] tlsCerts |
| ) { |
| List<String> confirmationMethods = assertionWrapper.getConfirmationMethods(); |
| for (String confirmationMethod : confirmationMethods) { |
| if (OpenSAMLUtil.isMethodHolderOfKey(confirmationMethod)) { |
| if (tlsCerts == null || tlsCerts.length == 0) { |
| return false; |
| } |
| SAMLKeyInfo subjectKeyInfo = assertionWrapper.getSubjectKeyInfo(); |
| if (!compareCredentials(subjectKeyInfo, tlsCerts)) { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Compare the credentials of the assertion to the credentials used in 2-way TLS. |
| * Return true on a match |
| * @param subjectKeyInfo the SAMLKeyInfo object |
| * @param tlsCerts The client certificates |
| * @return true if the credentials of the assertion were used to verify a signature |
| */ |
| private static boolean compareCredentials( |
| SAMLKeyInfo subjectKeyInfo, |
| Certificate[] tlsCerts |
| ) { |
| X509Certificate[] subjectCerts = subjectKeyInfo.getCerts(); |
| PublicKey subjectPublicKey = subjectKeyInfo.getPublicKey(); |
| |
| // |
| // Try to match the TLS certs |
| // |
| if (subjectCerts != null && subjectCerts.length > 0 |
| && tlsCerts[0].equals(subjectCerts[0])) { |
| return true; |
| } else if (subjectPublicKey != null |
| && tlsCerts[0].getPublicKey().equals(subjectPublicKey)) { |
| return true; |
| } |
| |
| return false; |
| } |
| |
| } |