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1   /*
2    * Copyright [2007] [University Corporation for Advanced Internet Development, Inc.]
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    * http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package org.opensaml.xml.security.credential.criteria;
18  
19  import java.security.cert.X509CertSelector;
20  import java.security.cert.X509Certificate;
21  
22  import org.opensaml.xml.security.credential.Credential;
23  import org.opensaml.xml.security.x509.X509Credential;
24  import org.slf4j.Logger;
25  import org.slf4j.LoggerFactory;
26  
27  /**
28   * Instance of evaluable credential criteria for evaluating whether a credential's certificate meets the criteria
29   * specified by an instance of {@link X509CertSelector}.
30   * 
31   */
32  public class EvaluableX509CertSelectorCredentialCriteria implements EvaluableCredentialCriteria {
33  
34      /** Logger. */
35      private final Logger log = LoggerFactory.getLogger(EvaluableX509CertSelectorCredentialCriteria.class);
36  
37      /** Base criteria. */
38      private X509CertSelector certSelector;
39  
40      /**
41       * Constructor.
42       * 
43       * @param newSelector the new X509 cert selector
44       */
45      public EvaluableX509CertSelectorCredentialCriteria(X509CertSelector newSelector) {
46          if (newSelector == null) {
47              throw new IllegalArgumentException("X509 cert selector may not be null");
48          }
49          certSelector = newSelector;
50      }
51  
52      /** {@inheritDoc} */
53      public Boolean evaluate(Credential target) {
54          if (target == null) {
55              log.error("Credential target was null");
56              return null;
57          }
58          if (!(target instanceof X509Credential)) {
59              log.info("Credential is not an X509Credential, can not evaluate X509CertSelector criteria");
60              return Boolean.FALSE;
61          }
62          X509Credential x509Cred = (X509Credential) target;
63  
64          X509Certificate entityCert = x509Cred.getEntityCertificate();
65          if (entityCert == null) {
66              log.info("X509Credential did not contain an entity certificate, can not evaluate X509CertSelector criteria");
67              return Boolean.FALSE;
68          }
69  
70          Boolean result = certSelector.match(entityCert);
71          return result;
72      }
73  
74  }