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Java > Open Source Codes > org > apache > geronimo > security > realm > providers > PasswordCallbackHandler


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 package org.apache.geronimo.security.realm.providers;
18
19 import java.util.Arrays JavaDoc;
20 import javax.security.auth.callback.Callback JavaDoc;
21 import javax.security.auth.callback.CallbackHandler JavaDoc;
22 import javax.security.auth.callback.NameCallback JavaDoc;
23 import javax.security.auth.callback.PasswordCallback JavaDoc;
24 import javax.security.auth.callback.UnsupportedCallbackException JavaDoc;
25
26 /**
27  * @version $Rev: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
28  */
29 public class PasswordCallbackHandler implements ClearableCallbackHandler {
30     private final String JavaDoc username;
31     private final char[] password;
32
33     public PasswordCallbackHandler(String JavaDoc username, char[] password) {
34         this.username = username;
35         this.password = password;
36     }
37
38     public void handle(Callback JavaDoc[] callbacks) throws UnsupportedCallbackException JavaDoc {
39         for (int i = 0; i < callbacks.length; i++) {
40             Callback JavaDoc callback = callbacks[i];
41             if (callback instanceof NameCallback JavaDoc) {
42                 NameCallback JavaDoc nc = (NameCallback JavaDoc) callback;
43                 nc.setName(username);
44             } else if (callback instanceof PasswordCallback JavaDoc) {
45                 PasswordCallback JavaDoc pc = (PasswordCallback JavaDoc) callback;
46                 pc.setPassword(password);
47             } else {
48                 throw new UnsupportedCallbackException JavaDoc(callback);
49             }
50         }
51     }
52
53     public void clear() {
54         Arrays.fill(password, '\0');
55     }
56 }
57
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