content: /*
   * Licensed 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 com.github.pgasync.io.frontend;
  
  import com.github.pgasync.message.frontend.PasswordMessage;
  
  import java.nio.ByteBuffer;
  import java.nio.charset.Charset;
  
  /**
   * See <a href="www.postgresql.org/docs/9.3/static/protocol-message-formats.html">Postgres message formats</a>
   *
   * <pre>
   * PasswordMessage (F)
   *  Byte1('p')
   *      Identifies the message as a password response. Note that this is also used for GSSAPI and SSPI response messages (which is really a design error, since the contained data is not a null-terminated string in that case, but can be arbitrary binary data).
   *  Int32
   *      Length of message contents in bytes, including self.
   *  String
   *      The password (encrypted, if requested).
   * </pre>
   *
   * @author Antti Laisi
   */
  public class PasswordMessageEncoder extends SkipableEncoder<PasswordMessage> {
  
      @Override
      public Class<PasswordMessage> getMessageType() {
          return PasswordMessage.class;
      }
  
      @Override
      protected byte getMessageId() {
          return (byte) 'p';
      }
  
      @Override
      public void writeBody(PasswordMessage msg, ByteBuffer buffer, Charset encoding) {
          buffer.put(msg.getPasswordHash() != null ? msg.getPasswordHash() : msg.getPassword().getBytes(encoding));
          buffer.put((byte) 0);
      }
  
  }
  