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.ws.security.common;
21  
22  import org.apache.ws.security.WSPasswordCallback;
23  
24  import javax.security.auth.callback.Callback;
25  import javax.security.auth.callback.CallbackHandler;
26  import javax.security.auth.callback.UnsupportedCallbackException;
27  import java.io.IOException;
28  import java.util.HashMap;
29  import java.util.Map;
30  
31  /**
32   * A Callback Handler implementation for the case of processing a Username Token.
33   */
34  public class UsernamePasswordCallbackHandler implements CallbackHandler {
35      
36      private Map<String, String> users = new HashMap<String, String>();
37      
38      public UsernamePasswordCallbackHandler() {
39          users.put("wernerd", "verySecret");
40          users.put("bob", "security");
41          users.put("alice", "securityPassword");
42      }
43      
44      public void handle(Callback[] callbacks)
45          throws IOException, UnsupportedCallbackException {
46          for (int i = 0; i < callbacks.length; i++) {
47              if (callbacks[i] instanceof WSPasswordCallback) {
48                  WSPasswordCallback pc = (WSPasswordCallback) callbacks[i];
49                  if (pc.getUsage() == WSPasswordCallback.USERNAME_TOKEN) {
50                      pc.setPassword(users.get(pc.getIdentifier()));
51                      break;
52                  }
53              } else {
54                  throw new UnsupportedCallbackException(callbacks[i], "Unrecognized Callback");
55              }
56          }
57      }
58  }