1 /**
2 *
3 * Copyright 2004-2005 The Apache Software Foundation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * 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;
20 import javax.security.auth.callback.Callback;
21 import javax.security.auth.callback.CallbackHandler;
22 import javax.security.auth.callback.NameCallback;
23 import javax.security.auth.callback.PasswordCallback;
24 import javax.security.auth.callback.UnsupportedCallbackException;
25
26 /**
27 * @version $Rev: 355877 $ $Date: 2005-12-10 18:48:27 -0800 (Sat, 10 Dec 2005) $
28 */
29 public class PasswordCallbackHandler implements ClearableCallbackHandler {
30 private final String username;
31 private final char[] password;
32
33 public PasswordCallbackHandler(String username, char[] password) {
34 this.username = username;
35 this.password = password;
36 }
37
38 public void handle(Callback[] callbacks) throws UnsupportedCallbackException {
39 for (int i = 0; i < callbacks.length; i++) {
40 Callback callback = callbacks[i];
41 if (callback instanceof NameCallback) {
42 NameCallback nc = (NameCallback) callback;
43 nc.setName(username);
44 } else if (callback instanceof PasswordCallback) {
45 PasswordCallback pc = (PasswordCallback) callback;
46 pc.setPassword(password);
47 } else {
48 throw new UnsupportedCallbackException(callback);
49 }
50 }
51 }
52
53 public void clear() {
54 Arrays.fill(password, '\0');
55 }
56 }