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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 edu.internet2.middleware.shibboleth.common.config.security;
18  
19  import java.util.ArrayList;
20  import java.util.List;
21  
22  import org.opensaml.saml2.metadata.provider.MetadataProvider;
23  import org.opensaml.security.MetadataCredentialResolver;
24  import org.opensaml.security.MetadataCredentialResolverFactory;
25  import org.opensaml.xml.security.keyinfo.BasicProviderKeyInfoCredentialResolver;
26  import org.opensaml.xml.security.keyinfo.KeyInfoCredentialResolver;
27  import org.opensaml.xml.security.keyinfo.KeyInfoProvider;
28  import org.opensaml.xml.security.keyinfo.provider.DSAKeyValueProvider;
29  import org.opensaml.xml.security.keyinfo.provider.InlineX509DataProvider;
30  import org.opensaml.xml.security.keyinfo.provider.RSAKeyValueProvider;
31  import org.opensaml.xml.signature.impl.ExplicitKeySignatureTrustEngine;
32  import org.springframework.beans.factory.config.AbstractFactoryBean;
33  
34  /**
35   * Spring factory bean used to created {@link ExplicitKeySignatureTrustEngine}s based on a metadata provider.
36   */
37  public class MetadataExplicitKeySignatureTrustEngineFactoryBean extends AbstractFactoryBean {
38      
39      /** Metadata provider used to look up key information for peer entities. */
40      private MetadataProvider metadataProvider;
41  
42      /**
43       * Gets the metadata provider used to look up key information for peer entities.
44       * 
45       * @return metadata provider used to look up key information for peer entities
46       */
47      public MetadataProvider getMetadataProvider() {
48          return metadataProvider;
49      }
50  
51      /**
52       * Sets the metadata provider used to look up key information for peer entities.
53       * 
54       * @param provider metadata provider used to look up key information for peer entities
55       */
56      public void setMetadataProvider(MetadataProvider provider) {
57          metadataProvider = provider;
58      }
59  
60      /** {@inheritDoc} */
61      public Class getObjectType() {
62          return ExplicitKeySignatureTrustEngine.class;
63      }
64      
65      /** {@inheritDoc} */
66      protected Object createInstance() throws Exception {
67          MetadataCredentialResolverFactory mcrFactory = MetadataCredentialResolverFactory.getFactory();
68          MetadataCredentialResolver credResolver = mcrFactory.getInstance(getMetadataProvider());
69          
70          List<KeyInfoProvider> keyInfoProviders = new ArrayList<KeyInfoProvider>();
71          keyInfoProviders.add(new DSAKeyValueProvider());
72          keyInfoProviders.add(new RSAKeyValueProvider());
73          keyInfoProviders.add(new InlineX509DataProvider());
74          KeyInfoCredentialResolver keyInfoCredResolver = new BasicProviderKeyInfoCredentialResolver(keyInfoProviders);
75          
76          return new ExplicitKeySignatureTrustEngine(credResolver, keyInfoCredResolver);
77      }
78  }