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/*
 * 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.proton.plug.sasl;

import org.proton.plug.ClientSASL;

/**
 * This is a simple implementation provided with just user/password
 * TODO: this interface will probaby change as we are challenged with more SASL cases where there is a communication between client and server to determine the authentication
 */
public class ClientSASLPlain implements ClientSASL {

   private String username;
   private String password;

   public ClientSASLPlain(String user, String password) {
      this.username = user;
      this.password = password;
   }

   @Override
   public String getName() {
      return "PLAIN";
   }

   @Override
   public byte[] getBytes() {

      if (username == null) {
         username = "";
      }

      if (password == null) {
         password = "";
      }

      byte[] usernameBytes = username.getBytes();
      byte[] passwordBytes = password.getBytes();
      byte[] data = new byte[usernameBytes.length + passwordBytes.length + 2];
      System.arraycopy(usernameBytes, 0, data, 1, usernameBytes.length);
      System.arraycopy(passwordBytes, 0, data, 2 + usernameBytes.length, passwordBytes.length);
      return data;
   }

}