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1   /* Copyright 2004, 2005 Acegi Technology Pty Limited
2    *
3    * Licensed under the Apache License, Version 2.0 (the "License");
4    * you may not use this file except in compliance with the License.
5    * You may obtain a copy of the License at
6    *
7    *     http://www.apache.org/licenses/LICENSE-2.0
8    *
9    * Unless required by applicable law or agreed to in writing, software
10   * distributed under the License is distributed on an "AS IS" BASIS,
11   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12   * See the License for the specific language governing permissions and
13   * limitations under the License.
14   */
15  
16  package org.acegisecurity;
17  
18  import org.acegisecurity.providers.anonymous.AnonymousAuthenticationToken;
19  import org.acegisecurity.providers.rememberme.RememberMeAuthenticationToken;
20  
21  
22  /***
23   * Basic implementation of {@link AuthenticationTrustResolver}.
24   * 
25   * <p>
26   * Makes trust decisions based on whether the passed
27   * <code>Authentication</code> is an instance of a defined class.
28   * </p>
29   * 
30   * <p>
31   * If {@link #anonymousClass} or {@link #rememberMeClass} is <code>null</code>,
32   * the corresponding method will always return <code>false</code>.
33   * </p>
34   *
35   * @author Ben Alex
36   * @version $Id: AuthenticationTrustResolverImpl.java,v 1.4 2005/11/17 00:55:49 benalex Exp $
37   */
38  public class AuthenticationTrustResolverImpl
39      implements AuthenticationTrustResolver {
40      //~ Instance fields ========================================================
41  
42      private Class anonymousClass = AnonymousAuthenticationToken.class;
43      private Class rememberMeClass = RememberMeAuthenticationToken.class;
44  
45      //~ Methods ================================================================
46  
47      public boolean isAnonymous(Authentication authentication) {
48          if ((anonymousClass == null) || (authentication == null)) {
49              return false;
50          }
51  
52          return anonymousClass.isAssignableFrom(authentication.getClass());
53      }
54  
55      public void setAnonymousClass(Class anonymousClass) {
56          this.anonymousClass = anonymousClass;
57      }
58  
59      public Class getAnonymousClass() {
60          return anonymousClass;
61      }
62  
63      public boolean isRememberMe(Authentication authentication) {
64          if ((rememberMeClass == null) || (authentication == null)) {
65              return false;
66          }
67  
68          return rememberMeClass.isAssignableFrom(authentication.getClass());
69      }
70  
71      public void setRememberMeClass(Class rememberMeClass) {
72          this.rememberMeClass = rememberMeClass;
73      }
74  
75      public Class getRememberMeClass() {
76          return rememberMeClass;
77      }
78  }