//******************************************************************************************************// CommandSerializer.cs - Gbtc//// Copyright © 2020, Grid Protection Alliance. All Rights Reserved.//// Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See// the NOTICE file distributed with this work for additional information regarding copyright ownership.// The GPA licenses this file to you under the MIT License (MIT), the "License"; you may not use this// file except in compliance with the License. You may obtain a copy of the License at://// http://opensource.org/licenses/MIT//// Unless agreed to in writing, the subject software distributed under the License is distributed on an// "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the// License for the specific language governing permissions and limitations.//// Code Modification History:// ----------------------------------------------------------------------------------------------------// 05/12/2020 - J. Ritchie Carroll// Generated original version of source code.////****************************************************************************************************** #region [ Contributor License Agreements ] //*******************************************************************************************************//// Code based on the following project:// https://github.com/Callisto82/tftp.net// // Copyright © 2011, Michael Baer////******************************************************************************************************* #endregion using System.IO;using System.Text; namespace GSF.Net.TFtp.Commands{ /// <summary> /// Serializes an ITFtpCommand into a stream of bytes. /// </summary> internal class CommandSerializer { /// <summary> /// Call this method to serialize the given <code>command</code> using the given <code>writer</code>. /// </summary> public void Serialize(ITFtpCommand command, Stream stream) { CommandComposerVisitor visitor = new CommandComposerVisitor(stream); command.Visit(visitor); } private class CommandComposerVisitor : ITFtpCommandVisitor { private readonly TFtpStreamWriter m_writer; public CommandComposerVisitor(Stream stream) { m_writer = new TFtpStreamWriter(stream); } private void OnReadOrWriteRequest(ReadOrWriteRequest command) { m_writer.WriteBytes(Encoding.ASCII.GetBytes(command.Filename)); m_writer.WriteByte(0); m_writer.WriteBytes(Encoding.ASCII.GetBytes(command.Mode.ToString())); m_writer.WriteByte(0); if (command.Options == null) return; foreach (TransferOption option in command.Options) { m_writer.WriteBytes(Encoding.ASCII.GetBytes(option.Name)); m_writer.WriteByte(0); m_writer.WriteBytes(Encoding.ASCII.GetBytes(option.Value)); m_writer.WriteByte(0); } } public void OnReadRequest(ReadRequest command) { m_writer.WriteUInt16(ReadRequest.OpCode); OnReadOrWriteRequest(command); } public void OnWriteRequest(WriteRequest command) { m_writer.WriteUInt16(WriteRequest.OpCode); OnReadOrWriteRequest(command); } public void OnData(Data command) { m_writer.WriteUInt16(Data.OpCode); m_writer.WriteUInt16(command.BlockNumber); m_writer.WriteBytes(command.Bytes); } public void OnAcknowledgement(Acknowledgement command) { m_writer.WriteUInt16(Acknowledgement.OpCode); m_writer.WriteUInt16(command.BlockNumber); } public void OnError(Error command) { m_writer.WriteUInt16(Error.OpCode); m_writer.WriteUInt16(command.ErrorCode); m_writer.WriteBytes(Encoding.ASCII.GetBytes(command.Message)); m_writer.WriteByte(0); } public void OnOptionAcknowledgement(OptionAcknowledgement command) { m_writer.WriteUInt16(OptionAcknowledgement.OpCode); foreach (TransferOption option in command.Options) { m_writer.WriteBytes(Encoding.ASCII.GetBytes(option.Name)); m_writer.WriteByte(0); m_writer.WriteBytes(Encoding.ASCII.GetBytes(option.Value)); m_writer.WriteByte(0); } } } }}
//******************************************************************************************************
// CommandSerializer.cs - Gbtc
//
// Copyright © 2020, Grid Protection Alliance. All Rights Reserved.
//
// Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See
// the NOTICE file distributed with this work for additional information regarding copyright ownership.
// The GPA licenses this file to you under the MIT License (MIT), the "License"; you may not use this
// file except in compliance with the License. You may obtain a copy of the License at:
//
// http://opensource.org/licenses/MIT
//
// Unless agreed to in writing, the subject software distributed under the License is distributed on an
// "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the
// License for the specific language governing permissions and limitations.
//
// Code Modification History:
// ----------------------------------------------------------------------------------------------------
// 05/12/2020 - J. Ritchie Carroll
// Generated original version of source code.
//
//******************************************************************************************************
#region [ Contributor License Agreements ]
//*******************************************************************************************************
//
// Code based on the following project:
// https://github.com/Callisto82/tftp.net
//
// Copyright © 2011, Michael Baer
//
//*******************************************************************************************************
#endregion
using System.IO;
using System.Text;
namespace GSF.Net.TFtp.Commands
{
/// <summary>
/// Serializes an ITFtpCommand into a stream of bytes.
/// </summary>
internal class CommandSerializer
{
/// <summary>
/// Call this method to serialize the given <code>command</code> using the given <code>writer</code>.
/// </summary>
public void Serialize(ITFtpCommand command, Stream stream)
{
CommandComposerVisitor visitor = new CommandComposerVisitor(stream);
command.Visit(visitor);
}
private class CommandComposerVisitor : ITFtpCommandVisitor
{
private readonly TFtpStreamWriter m_writer;
public CommandComposerVisitor(Stream stream)
{
m_writer = new TFtpStreamWriter(stream);
}
private void OnReadOrWriteRequest(ReadOrWriteRequest command)
{
m_writer.WriteBytes(Encoding.ASCII.GetBytes(command.Filename));
m_writer.WriteByte(0);
m_writer.WriteBytes(Encoding.ASCII.GetBytes(command.Mode.ToString()));
m_writer.WriteByte(0);
if (command.Options == null)
return;
foreach (TransferOption option in command.Options)
{
m_writer.WriteBytes(Encoding.ASCII.GetBytes(option.Name));
m_writer.WriteByte(0);
m_writer.WriteBytes(Encoding.ASCII.GetBytes(option.Value));
m_writer.WriteByte(0);
}
}
public void OnReadRequest(ReadRequest command)
{
m_writer.WriteUInt16(ReadRequest.OpCode);
OnReadOrWriteRequest(command);
}
public void OnWriteRequest(WriteRequest command)
{
m_writer.WriteUInt16(WriteRequest.OpCode);
OnReadOrWriteRequest(command);
}
public void OnData(Data command)
{
m_writer.WriteUInt16(Data.OpCode);
m_writer.WriteUInt16(command.BlockNumber);
m_writer.WriteBytes(command.Bytes);
}
public void OnAcknowledgement(Acknowledgement command)
{
m_writer.WriteUInt16(Acknowledgement.OpCode);
m_writer.WriteUInt16(command.BlockNumber);
}
public void OnError(Error command)
{
m_writer.WriteUInt16(Error.OpCode);
m_writer.WriteUInt16(command.ErrorCode);
m_writer.WriteBytes(Encoding.ASCII.GetBytes(command.Message));
m_writer.WriteByte(0);
}
public void OnOptionAcknowledgement(OptionAcknowledgement command)
{
m_writer.WriteUInt16(OptionAcknowledgement.OpCode);
foreach (TransferOption option in command.Options)
{
m_writer.WriteBytes(Encoding.ASCII.GetBytes(option.Name));
m_writer.WriteByte(0);
m_writer.WriteBytes(Encoding.ASCII.GetBytes(option.Value));
m_writer.WriteByte(0);
}
}
}
}
}