SASLPlainMechanism


1   /**
2    * $RCSfile$
3    * $Revision: $
4    * $Date: $
5    *
6    * Copyright 2003-2004 Jive Software.
7    *
8    * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
9    * you may not use this file except in compliance with the License.
10   * You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  
21  package org.jivesoftware.smack.sasl;
22  
23  import org.jivesoftware.smack.SASLAuthentication;
24  
25  /**
26   * Implementation of the SASL PLAIN mechanisn as defined by the
27   * <a HREF="http://www.ietf.org/internet-drafts/draft-ietf-sasl-plain-08.txt">IETF draft
28   * document</a>.
29   *
30   * @author Gaston Dombiak
31   */
32  public class SASLPlainMechanism extends SASLMechanism {
33  
34      public SASLPlainMechanism(SASLAuthentication saslAuthentication) {
35          super(saslAuthentication);
36      }
37  
38      protected String   getName() {
39          return "PLAIN";
40      }
41  
42      protected String   getAuthenticationText(String   username, String   host, String   password) {
43          // Build the text containing the "authorization identity" + NUL char +
44          // "authentication identity" + NUL char + "clear-text password"
45          StringBuffer   text = new StringBuffer  ();
46          text.append(username).append("@").append(host);
47          text.append('\0');
48          text.append(username);
49          text.append('\0');
50          text.append(password);
51          return text.toString();
52      }
53  
54      protected String   getChallengeResponse(byte[] bytes) {
55          // Return null since this mechanism will never get a challenge from the server
56          return null;
57      }
58  }
59
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