| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.qpid.management.common.sasl; |
| |
| import org.apache.harmony.javax.security.auth.callback.Callback; |
| import org.apache.harmony.javax.security.auth.callback.CallbackHandler; |
| import org.apache.harmony.javax.security.auth.callback.NameCallback; |
| import org.apache.harmony.javax.security.auth.callback.PasswordCallback; |
| import org.apache.harmony.javax.security.auth.callback.UnsupportedCallbackException; |
| import java.io.IOException; |
| import java.io.UnsupportedEncodingException; |
| import java.security.MessageDigest; |
| import java.security.NoSuchAlgorithmException; |
| |
| |
| public class UsernameHashedPasswordCallbackHandler implements CallbackHandler |
| { |
| private String user; |
| private char[] pwchars; |
| |
| public UsernameHashedPasswordCallbackHandler(String user, String password) throws Exception |
| { |
| this.user = user; |
| this.pwchars = getHash(password); |
| } |
| |
| public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException |
| { |
| for (int i = 0; i < callbacks.length; i++) |
| { |
| if (callbacks[i] instanceof NameCallback) |
| { |
| NameCallback ncb = (NameCallback) callbacks[i]; |
| ncb.setName(user); |
| } |
| else if (callbacks[i] instanceof PasswordCallback) |
| { |
| PasswordCallback pcb = (PasswordCallback) callbacks[i]; |
| pcb.setPassword(pwchars); |
| } |
| else |
| { |
| throw new UnsupportedCallbackException(callbacks[i]); |
| } |
| } |
| } |
| |
| |
| private void clearPassword() |
| { |
| if (pwchars != null) |
| { |
| for (int i = 0 ; i < pwchars.length ; i++) |
| { |
| pwchars[i] = 0; |
| } |
| pwchars = null; |
| } |
| } |
| |
| protected void finalize() |
| { |
| clearPassword(); |
| } |
| |
| public static char[] getHash(String text) throws NoSuchAlgorithmException, UnsupportedEncodingException |
| { |
| byte[] data = text.getBytes("utf-8"); |
| |
| MessageDigest md = MessageDigest.getInstance("MD5"); |
| |
| for (byte b : data) |
| { |
| md.update(b); |
| } |
| |
| byte[] digest = md.digest(); |
| |
| char[] hash = new char[digest.length ]; |
| |
| int index = 0; |
| for (byte b : digest) |
| { |
| hash[index++] = (char) b; |
| } |
| |
| return hash; |
| } |
| } |