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.qpid.management.common.sasl; 21 22 import org.apache.harmony.javax.security.auth.callback.Callback; 23 import org.apache.harmony.javax.security.auth.callback.CallbackHandler; 24 import org.apache.harmony.javax.security.auth.callback.NameCallback; 25 import org.apache.harmony.javax.security.auth.callback.PasswordCallback; 26 import org.apache.harmony.javax.security.auth.callback.UnsupportedCallbackException; 27 import java.io.IOException; 28 29 public class UserPasswordCallbackHandler implements CallbackHandler 30 { 31 private String user; 32 private char[] pwchars; 33 34 public UserPasswordCallbackHandler(String user, String password) 35 { 36 this.user = user; 37 this.pwchars = password.toCharArray(); 38 } 39 40 public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException 41 { 42 for (int i = 0; i < callbacks.length; i++) 43 { 44 if (callbacks[i] instanceof NameCallback) 45 { 46 NameCallback ncb = (NameCallback) callbacks[i]; 47 ncb.setName(user); 48 } 49 else if (callbacks[i] instanceof PasswordCallback) 50 { 51 PasswordCallback pcb = (PasswordCallback) callbacks[i]; 52 pcb.setPassword(pwchars); 53 } 54 else 55 { 56 throw new UnsupportedCallbackException(callbacks[i]); 57 } 58 } 59 } 60 61 private void clearPassword() 62 { 63 if (pwchars != null) 64 { 65 for (int i = 0 ; i < pwchars.length ; i++) 66 { 67 pwchars[i] = 0; 68 } 69 pwchars = null; 70 } 71 } 72 73 protected void finalize() 74 { 75 clearPassword(); 76 } 77 } 78
