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1   /* Copyright 2004 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.providers.rcp;
17  
18  import org.acegisecurity.AuthenticationException;
19  import org.acegisecurity.AuthenticationManager;
20  import org.acegisecurity.GrantedAuthority;
21  import org.acegisecurity.providers.UsernamePasswordAuthenticationToken;
22  
23  import org.springframework.beans.factory.InitializingBean;
24  import org.springframework.util.Assert;
25  
26  
27  /***
28   * Server-side processor of a remote authentication request.
29   * 
30   * <P>
31   * This bean requires no security interceptor to protect it. Instead, the bean
32   * uses the configured <code>AuthenticationManager</code> to resolve an
33   * authentication request.
34   * </p>
35   *
36   * @author Ben Alex
37   * @version $Id: RemoteAuthenticationManagerImpl.java,v 1.3 2005/11/17 00:55:51 benalex Exp $
38   */
39  public class RemoteAuthenticationManagerImpl
40      implements RemoteAuthenticationManager, InitializingBean {
41      //~ Instance fields ========================================================
42  
43      private AuthenticationManager authenticationManager;
44  
45      //~ Methods ================================================================
46  
47      public void setAuthenticationManager(
48          AuthenticationManager authenticationManager) {
49          this.authenticationManager = authenticationManager;
50      }
51  
52      public AuthenticationManager getAuthenticationManager() {
53          return authenticationManager;
54      }
55  
56      public void afterPropertiesSet() throws Exception {
57          Assert.notNull(this.authenticationManager, "authenticationManager is required");
58      }
59  
60      public GrantedAuthority[] attemptAuthentication(String username,
61          String password) throws RemoteAuthenticationException {
62          UsernamePasswordAuthenticationToken request = new UsernamePasswordAuthenticationToken(username,
63                  password);
64  
65          try {
66              return authenticationManager.authenticate(request).getAuthorities();
67          } catch (AuthenticationException authEx) {
68              throw new RemoteAuthenticationException(authEx.getMessage());
69          }
70      }
71  }