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1   /* 
2    * Copyright (c) 2007, Fraunhofer-Gesellschaft
3    * All rights reserved.
4    * 
5    * Redistribution and use in source and binary forms, with or without
6    * modification, are permitted provided that the following conditions are
7    * met:
8    * 
9    * (1) Redistributions of source code must retain the above copyright
10   *     notice, this list of conditions and the disclaimer at the end.
11   *     Redistributions in binary form must reproduce the above copyright
12   *     notice, this list of conditions and the following disclaimer in
13   *     the documentation and/or other materials provided with the
14   *     distribution.
15   * 
16   * (2) Neither the name of Fraunhofer nor the names of its
17   *     contributors may be used to endorse or promote products derived
18   *     from this software without specific prior written permission.
19   * 
20   * DISCLAIMER
21   * 
22   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33   *  
34   */
35  package org.ogf.graap.wsag.security.core.keystore;
36  
37  import java.io.IOException;
38  
39  import javax.security.auth.callback.Callback;
40  import javax.security.auth.callback.CallbackHandler;
41  import javax.security.auth.callback.ConfirmationCallback;
42  import javax.security.auth.callback.NameCallback;
43  import javax.security.auth.callback.PasswordCallback;
44  import javax.security.auth.callback.TextOutputCallback;
45  import javax.security.auth.callback.UnsupportedCallbackException;
46  
47  import org.ogf.graap.wsag.security.core.KeystoreProperties;
48  
49  /**
50   * KeystoreCallbackHandler
51   * 
52   * @author Oliver Waeldrich
53   * 
54   */
55  public class KeystoreCallbackHandler implements CallbackHandler
56  {
57  
58      private KeystoreProperties properties;
59  
60      /**
61       * The callback handler uses the specified keystore properties to handle JAAS callbacks on the specified
62       * keystore.
63       * 
64       * @param properties
65       *            the keystore properties to use
66       */
67      public KeystoreCallbackHandler( KeystoreProperties properties )
68      {
69          this.properties = properties;
70      }
71  
72      /**
73       * {@inheritDoc}
74       */
75      public void handle( Callback[] callbacks ) throws IOException, UnsupportedCallbackException
76      {
77          int passwordInvocations = 0;
78  
79          for ( int i = 0; i < callbacks.length; i++ )
80          {
81              Callback callback = callbacks[i];
82  
83              if ( callback instanceof KeystoreCallback )
84              {
85                  KeystoreCallback ksCallback = (KeystoreCallback) callback;
86  
87                  ksCallback.setPrivateKeyPassword( properties.getPrivateKeyPassword() );
88                  ksCallback.setKeystorePassword( properties.getKeystorePassword() );
89                  ksCallback.setTruststorePassword( properties.getTruststorePassword() );
90  
91                  continue;
92              }
93              else if ( callback instanceof TextOutputCallback )
94              {
95                  continue;
96              }
97              else if ( callback instanceof NameCallback )
98              {
99                  NameCallback nameCallback = (NameCallback) callback;
100                 nameCallback.setName( properties.getKeyStoreAlias() );
101                 continue;
102             }
103             else if ( callback instanceof PasswordCallback )
104             {
105                 PasswordCallback passwordCallback = (PasswordCallback) callback;
106 
107                 if ( passwordInvocations == 0 )
108                 {
109                     passwordCallback.setPassword( properties.getKeystorePassword().toCharArray() );
110                 }
111                 else if ( passwordInvocations == 1 )
112                 {
113                     passwordCallback.setPassword( properties.getPrivateKeyPassword().toCharArray() );
114                 }
115                 else
116                 {
117                     throw new UnsupportedCallbackException( callback, "Only 2 invocations allowed." );
118                 }
119                 continue;
120             }
121             else if ( callback instanceof ConfirmationCallback )
122             {
123                 ConfirmationCallback confirmationCallback = (ConfirmationCallback) callback;
124                 confirmationCallback.setSelectedIndex( ConfirmationCallback.OK );
125                 continue;
126             }
127 
128             throw new UnsupportedCallbackException( callback );
129         }
130     }
131 }