Shuyi Chen | d7955ce | 2013-05-22 14:51:55 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Licensed to the Apache Software Foundation (ASF) under one |
| 4 | * or more contributor license agreements. See the NOTICE file |
| 5 | * distributed with this work for additional information |
| 6 | * regarding copyright ownership. The ASF licenses this file |
| 7 | * to you under the Apache License, Version 2.0 (the |
| 8 | * "License"); you may not use this file except in compliance |
| 9 | * with the License. You may obtain a copy of the License at |
| 10 | * |
| 11 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | * |
| 13 | * Unless required by applicable law or agreed to in writing, |
| 14 | * software distributed under the License is distributed on an |
| 15 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 16 | * KIND, either express or implied. See the License for the |
| 17 | * specific language governing permissions and limitations |
| 18 | * under the License. |
| 19 | * |
| 20 | */ |
| 21 | package org.apache.qpid.management.common.sasl; |
| 22 | |
| 23 | import org.apache.harmony.javax.security.auth.callback.Callback; |
| 24 | import org.apache.harmony.javax.security.auth.callback.CallbackHandler; |
| 25 | import org.apache.harmony.javax.security.auth.callback.NameCallback; |
| 26 | import org.apache.harmony.javax.security.auth.callback.PasswordCallback; |
| 27 | import org.apache.harmony.javax.security.auth.callback.UnsupportedCallbackException; |
| 28 | import java.io.IOException; |
| 29 | import java.io.UnsupportedEncodingException; |
| 30 | import java.security.MessageDigest; |
| 31 | import java.security.NoSuchAlgorithmException; |
| 32 | |
| 33 | |
| 34 | public class UsernameHashedPasswordCallbackHandler implements CallbackHandler |
| 35 | { |
| 36 | private String user; |
| 37 | private char[] pwchars; |
| 38 | |
| 39 | public UsernameHashedPasswordCallbackHandler(String user, String password) throws Exception |
| 40 | { |
| 41 | this.user = user; |
| 42 | this.pwchars = getHash(password); |
| 43 | } |
| 44 | |
| 45 | public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException |
| 46 | { |
| 47 | for (int i = 0; i < callbacks.length; i++) |
| 48 | { |
| 49 | if (callbacks[i] instanceof NameCallback) |
| 50 | { |
| 51 | NameCallback ncb = (NameCallback) callbacks[i]; |
| 52 | ncb.setName(user); |
| 53 | } |
| 54 | else if (callbacks[i] instanceof PasswordCallback) |
| 55 | { |
| 56 | PasswordCallback pcb = (PasswordCallback) callbacks[i]; |
| 57 | pcb.setPassword(pwchars); |
| 58 | } |
| 59 | else |
| 60 | { |
| 61 | throw new UnsupportedCallbackException(callbacks[i]); |
| 62 | } |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | |
| 67 | private void clearPassword() |
| 68 | { |
| 69 | if (pwchars != null) |
| 70 | { |
| 71 | for (int i = 0 ; i < pwchars.length ; i++) |
| 72 | { |
| 73 | pwchars[i] = 0; |
| 74 | } |
| 75 | pwchars = null; |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | protected void finalize() |
| 80 | { |
| 81 | clearPassword(); |
| 82 | } |
| 83 | |
| 84 | public static char[] getHash(String text) throws NoSuchAlgorithmException, UnsupportedEncodingException |
| 85 | { |
| 86 | byte[] data = text.getBytes("utf-8"); |
| 87 | |
| 88 | MessageDigest md = MessageDigest.getInstance("MD5"); |
| 89 | |
| 90 | for (byte b : data) |
| 91 | { |
| 92 | md.update(b); |
| 93 | } |
| 94 | |
| 95 | byte[] digest = md.digest(); |
| 96 | |
| 97 | char[] hash = new char[digest.length ]; |
| 98 | |
| 99 | int index = 0; |
| 100 | for (byte b : digest) |
| 101 | { |
| 102 | hash[index++] = (char) b; |
| 103 | } |
| 104 | |
| 105 | return hash; |
| 106 | } |
| 107 | } |