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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   package org.apache.openejb.core.security.jaas;
   18   
   19   import javax.security.auth.callback.Callback;
   20   import javax.security.auth.callback.CallbackHandler;
   21   import javax.security.auth.callback.NameCallback;
   22   import javax.security.auth.callback.PasswordCallback;
   23   import javax.security.auth.callback.UnsupportedCallbackException;
   24   import java.io.IOException;
   25   
   26   /**
   27    * A JAAS username password CallbackHandler.
   28    */
   29   public class UsernamePasswordCallbackHandler implements CallbackHandler {
   30   
   31       private final String username;
   32       private final String password;
   33   
   34       public UsernamePasswordCallbackHandler(String username, String password) {
   35           this.username = username;
   36           this.password = password;
   37       }
   38   
   39       public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
   40           for (int i = 0; i < callbacks.length; i++) {
   41               Callback callback = callbacks[i];
   42               if (callback instanceof PasswordCallback) {
   43                   PasswordCallback passwordCallback = (PasswordCallback) callback;
   44                   if (password == null) {
   45                       passwordCallback.setPassword(null);
   46                   } else {
   47                       passwordCallback.setPassword(password.toCharArray());
   48                   }
   49               } else if (callback instanceof NameCallback) {
   50                   NameCallback nameCallback = (NameCallback) callback;
   51                   if (username == null) {
   52                       nameCallback.setName(null);
   53                   } else {
   54                       nameCallback.setName(username);
   55                   }
   56               }
   57           }
   58       }
   59   
   60   }

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