diff options
Diffstat (limited to 'src/org/apache/qpid/management/common/sasl/UsernameHashedPasswordCallbackHandler.java')
-rw-r--r-- | src/org/apache/qpid/management/common/sasl/UsernameHashedPasswordCallbackHandler.java | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/org/apache/qpid/management/common/sasl/UsernameHashedPasswordCallbackHandler.java b/src/org/apache/qpid/management/common/sasl/UsernameHashedPasswordCallbackHandler.java new file mode 100644 index 0000000..54d7374 --- /dev/null +++ b/src/org/apache/qpid/management/common/sasl/UsernameHashedPasswordCallbackHandler.java @@ -0,0 +1,107 @@ +/* + * + * 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; + } +} |