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1   /**
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.apache.geronimo.javamail.store.imap.connection;
19  import java.util.ArrayList;
20  import java.util.HashMap;
21  import java.util.List;
22  import java.util.Map;
23  
24  import javax.mail.MessagingException;
25  
26  import org.apache.geronimo.javamail.store.imap.connection.IMAPResponseTokenizer.Token;
27  
28  /**
29   * Util class to represent a CAPABILITY response from a IMAP server
30   *
31   * @version $Rev: 594520 $ $Date: 2007-11-13 07:57:39 -0500 (Tue, 13 Nov 2007) $
32   */
33  public class IMAPCapabilityResponse extends IMAPUntaggedResponse {
34      // the advertised capabilities 
35      protected Map capabilities = new HashMap(); 
36      // the authentication mechanisms.  The order is important with 
37      // the authentications, as we a) want to process these in the 
38      // order presented, and b) need to convert them into String arrays 
39      // for Sasl API calls. 
40      protected List authentications = new ArrayList(); 
41  
42      /**
43       * Create a reply object from a server response line (normally, untagged).  This includes
44       * doing the parsing of the response line.
45       *
46       * @param response The response line used to create the reply object.
47       */
48      public IMAPCapabilityResponse(IMAPResponseTokenizer source, byte [] response) throws MessagingException {
49          super("CAPABILITY", response); 
50          
51          // parse each of the capability tokens.  We're using the default RFC822 parsing rules,
52          // which does not consider "=" to be a delimiter token, so all "AUTH=" capabilities will
53          // come through as a single token.
54          while (source.hasMore()) {
55              // the capabilities are always ATOMs. 
56              String value = source.readAtom().toUpperCase(); 
57              // is this an authentication option?
58              if (value.startsWith("AUTH=")) {
59                  // parse off the mechanism that fillows the "=", and add this to the supported list.
60                  String mechanism = value.substring(5);
61                  authentications.add(mechanism);
62              }
63              else {
64                  // just add this to the capabilities map.
65                  capabilities.put(value, value);
66              }
67          }
68      }
69      
70  
71      /**
72       * Return the capability map for the server.
73       * 
74       * @return A map of the capability items.
75       */
76      public Map getCapabilities() {
77          return capabilities;
78      }
79      
80      /**
81       * Retrieve the map of the server-supported authentication
82       * mechanisms.
83       * 
84       * @return 
85       */
86      public List getAuthentications() {
87          return authentications;
88      }
89  }
90