001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.transport.amqp.sasl;
018
019import org.apache.qpid.proton.engine.Sasl;
020import org.fusesource.hawtbuf.Buffer;
021
022/**
023 * Implements the SASL Plain mechanism.
024 */
025public class PlainMechanism extends AbstractSaslMechanism {
026
027    @Override
028    public void processSaslStep(Sasl sasl) {
029        byte[] data = new byte[sasl.pending()];
030        sasl.recv(data, 0, data.length);
031
032        Buffer[] parts = new Buffer(data).split((byte) 0);
033        switch (parts.length) {
034            case 0:
035                // Treat this as anonymous connect to support legacy behavior
036                // which allowed this.  Connection will fail if broker is not
037                // configured to allow anonymous connections.
038                break;
039            case 2:
040                username = parts[0].utf8().toString();
041                password = parts[1].utf8().toString();
042                break;
043            case 3:
044                username = parts[1].utf8().toString();
045                password = parts[2].utf8().toString();
046                break;
047            default:
048                setFailed("Invalid encoding of Authentication credentials");
049                break;
050        }
051    }
052
053    @Override
054    public String getMechanismName() {
055        return "PLAIN";
056    }
057}