View Javadoc

1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with the License.  You may obtain a copy of the License at
9    *  
10   *    http://www.apache.org/licenses/LICENSE-2.0
11   *  
12   *  Unless required by applicable law or agreed to in writing,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License. 
18   *  
19   */
20  package org.apache.directory.server.core.authn;
21  
22  
23  import javax.naming.NamingException;
24  
25  import org.apache.directory.server.core.interceptor.context.BindOperationContext;
26  import org.apache.directory.shared.ldap.constants.AuthenticationLevel;
27  import org.apache.directory.shared.ldap.exception.LdapNoPermissionException;
28  
29  
30  /**
31   * An {@link Authenticator} that handles anonymous connections
32   * (type <tt>'none'</tt>).
33   *
34   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
35   */
36  public class AnonymousAuthenticator extends AbstractAuthenticator
37  {
38      /**
39       * Creates a new instance.
40       */
41      public AnonymousAuthenticator()
42      {
43          super( AuthenticationLevel.NONE.toString() );
44      }
45  
46  
47      /**
48       * If the context is not configured to allow anonymous connections,
49       * this method throws a {@link javax.naming.NoPermissionException}.
50       */
51      public LdapPrincipal authenticate( BindOperationContext opContext ) throws NamingException
52      {
53          // We only allow Anonymous binds if the sservice allows them _or_
54          // if the user wants to bind on the rootDSE
55          if ( getDirectoryService().isAllowAnonymousAccess() || opContext.getDn().isEmpty() )
56          {
57              return LdapPrincipal.ANONYMOUS;
58          }
59          else
60          {
61              throw new LdapNoPermissionException( "Anonymous bind NOT permitted!" );
62          }
63      }
64  }