/// <summary>
/// 解析(SB)
/// </summary>
/// <param name="parseData"></param>
/// <param name="index"></param>
/// <returns></returns>
private NegotiationInfomation ParseSB(byte[] parseData, ref int index)
{
// 返却オブジェクト生成
NegotiationInfomation negotiationInfomation = new NegotiationInfomation()
{
Command = TelnetCommand.SB
};
// インデックス更新
index++;
// Telnetオプション設定
negotiationInfomation.Option = (TelnetOption)parseData[index++];
// インデックス繰り返し
for (; index < parseData.Length; index++)
{
// 副交渉の終わり？
if (parseData[index] == (byte)TelnetCommand.IAC && parseData[index + 1] == (byte)TelnetCommand.SE)
{
// 副交渉の終わりだった場合は繰り返し終了
break;
}
// データ部格納
if (negotiationInfomation.Stream == null)
{
negotiationInfomation.Stream = new MemoryStream();
}
negotiationInfomation.Stream.WriteByte(parseData[index]);
}
// 返却
return(negotiationInfomation);
}
/// <summary>
/// 解析
/// </summary>
/// <param name="parseData"></param>
/// <param name="stream"></param>
/// <returns></returns>
private List <NegotiationInfomation> Parse(byte[] parseData, MemoryStream stream)
{
// 返却オブジェクト生成
List <NegotiationInfomation> negotiationInfomations = new List <NegotiationInfomation>();
// 解析データ分繰返し
for (int i = 0; i < parseData.Length;)
{
// データがIAC？
if (parseData[i] == (byte)TelnetCommand.IAC)
{
// IAC解析
NegotiationInfomation negotiationInfomation = this.ParseIAC(parseData, ref i);
if (negotiationInfomation != null)
{
// リスト追加
this.Logger.Info(" " + negotiationInfomation.ToString());
negotiationInfomations.Add(negotiationInfomation);
}
else
{
// 例外
throw new NetworkVirtualTerminalException("IAC解析に失敗しました");
}
}
else
{
// バッファに書込み
stream.WriteByte(parseData[i++]);
}
}
// 返却
return(negotiationInfomations);
}
/// <summary>
/// 応答送信(SB)
/// </summary>
/// <param name="info"></param>
private void ResponseSB(NegotiationInfomation info)
{
// オプション毎に分岐
switch (info.Option)
{
case TelnetOption.terminal_type:
// TODO:未実装
if (info.Stream.Length > 0 && info.Stream.ToArray()[0] == 0x01)
{
this.SendTerminalType();
}
break;
case TelnetOption.window_size:
// TODO:未実装
this.SendWinSize();
break;
case TelnetOption.terminal_speed:
// TODO:未実装
if (info.Stream.Length > 0 && info.Stream.ToArray()[0] == 0x01)
{
this.SendTerminalSpeed();
}
break;
default:
break;
}
}
/// <summary>
/// コピーコンストラクタ
/// </summary>
/// <param name="info"></param>
public NegotiationInfomation(NegotiationInfomation info)
{
this.IAC = info.IAC;
this.Command = info.Command;
this.Option = info.Option;
this.Stream = info.Stream;
}
/// <summary>
/// 解析(SE)
/// </summary>
/// <param name="parseData"></param>
/// <param name="index"></param>
/// <returns></returns>
private NegotiationInfomation ParseSE(byte[] parseData, ref int index)
{
// 返却オブジェクト生成
NegotiationInfomation negotiationInfomation = new NegotiationInfomation()
{
Command = TelnetCommand.SE
};
// インデックス更新
index++;
// 返却
return(negotiationInfomation);
}
/// <summary>
/// 解析(WONT)
/// </summary>
/// <param name="parseData"></param>
/// <param name="index"></param>
/// <returns></returns>
private NegotiationInfomation ParseWONT(byte[] parseData, ref int index)
{
// 返却オブジェクト生成
NegotiationInfomation negotiationInfomation = new NegotiationInfomation()
{
Command = TelnetCommand.WONT
};
// インデックス更新
index++;
// Telnetオプション設定
negotiationInfomation.Option = (TelnetOption)parseData[index++];
// 返却
return(negotiationInfomation);
}
/// <summary>
/// 応答送信(DO)
/// </summary>
/// <param name="info"></param>
private void ResponseDO(NegotiationInfomation info)
{
if (info.Option <= TelnetOption.max)
{
// オプション状態で分岐
switch (this.m_Local[info.Option].Status)
{
case TelnetOptionStatus.No:
if (this.m_Local[info.Option].Accept)
{
this.m_Local[info.Option].Status = TelnetOptionStatus.Yes;
SendBack(TelnetCommand.WILL, info.Option);
}
else
{
SendBack(TelnetCommand.WONT, info.Option);
}
break;
case TelnetOptionStatus.WantNo:
switch (this.m_Local[info.Option].Queue)
{
case TelnetOptionQueue.Empty:
this.m_Local[info.Option].Status = TelnetOptionStatus.No;
break;
case TelnetOptionQueue.Opposite:
this.m_Local[info.Option].Status = TelnetOptionStatus.Yes;
break;
}
break;
case TelnetOptionStatus.WantYes:
switch (this.m_Local[info.Option].Queue)
{
case TelnetOptionQueue.Empty:
this.m_Local[info.Option].Status = TelnetOptionStatus.Yes;
break;
case TelnetOptionQueue.Opposite:
this.m_Local[info.Option].Status = TelnetOptionStatus.WantNo;
this.m_Local[info.Option].Queue = TelnetOptionQueue.Empty;
SendBack(TelnetCommand.WONT, info.Option);
break;
}
break;
}
}
else
{
SendBack(TelnetCommand.WONT, info.Option);
}
switch (info.Option)
{
case TelnetOption.binary:
switch (this.m_Local[TelnetOption.binary].Status)
{
case TelnetOptionStatus.Yes:
this.m_TelBinSend = true;
break;
case TelnetOptionStatus.No:
this.m_TelBinSend = false;
break;
}
break;
case TelnetOption.window_size:
if (this.m_Local[TelnetOption.window_size].Status == TelnetOptionStatus.Yes)
{
SendWinSize();
}
break;
case TelnetOption.suppress_go_ahead:
if (this.m_Local[TelnetOption.suppress_go_ahead].Status == TelnetOptionStatus.Yes)
{
this.m_TelLineMode = false;
}
break;
}
}
/// <summary>
/// 応答送信(SE)
/// </summary>
/// <param name="info"></param>
private void ResponseSE(NegotiationInfomation info)
{
}
/// <summary>
/// 応答送信(WONT)
/// </summary>
/// <param name="info"></param>
private void ResponseWONT(NegotiationInfomation info)
{
if (info.Option <= TelnetOption.max)
{
switch (this.m_Remote[info.Option].Status)
{
case TelnetOptionStatus.Yes:
this.m_Remote[info.Option].Status = TelnetOptionStatus.No;
SendBack(TelnetCommand.DONT, info.Option);
break;
case TelnetOptionStatus.WantNo:
switch (this.m_Remote[info.Option].Queue)
{
case TelnetOptionQueue.Empty:
this.m_Remote[info.Option].Status = TelnetOptionStatus.No;
break;
case TelnetOptionQueue.Opposite:
this.m_Remote[info.Option].Status = TelnetOptionStatus.WantYes;
this.m_Remote[info.Option].Queue = TelnetOptionQueue.Empty;
SendBack(TelnetCommand.DO, info.Option);
break;
}
break;
case TelnetOptionStatus.WantYes:
switch (this.m_Remote[info.Option].Queue)
{
case TelnetOptionQueue.Empty:
this.m_Remote[info.Option].Status = TelnetOptionStatus.No;
break;
case TelnetOptionQueue.Opposite:
this.m_Remote[info.Option].Status = TelnetOptionStatus.No;
this.m_Remote[info.Option].Queue = TelnetOptionQueue.Empty;
break;
}
break;
}
}
else
{
SendBack(TelnetCommand.DONT, info.Option);
}
switch (info.Option)
{
case TelnetOption.echo:
if (this.m_TelEcho)
{
switch (this.m_Remote[TelnetOption.echo].Status)
{
case TelnetOptionStatus.Yes:
this.m_LocalEcho = 0;
break;
case TelnetOptionStatus.No:
this.m_LocalEcho = 1;
break;
}
}
if (this.m_Remote[TelnetOption.echo].Status == TelnetOptionStatus.Yes)
{
this.m_TelLineMode = false;
}
break;
case TelnetOption.binary:
switch (this.m_Remote[TelnetOption.binary].Status)
{
case TelnetOptionStatus.Yes:
this.m_TelBinRecv = true;
break;
case TelnetOptionStatus.No:
this.m_TelBinRecv = false;
break;
}
break;
}
}
/// <summary>
/// 応答送信(DONT)
/// </summary>
/// <param name="info"></param>
private void ResponseDONT(NegotiationInfomation info)
{
if (info.Option <= TelnetOption.max)
{
switch (this.m_Local[info.Option].Status)
{
case TelnetOptionStatus.Yes:
this.m_Local[info.Option].Status = TelnetOptionStatus.No;
SendBack(TelnetCommand.WONT, info.Option);
break;
case TelnetOptionStatus.WantNo:
switch (this.m_Local[info.Option].Queue)
{
case TelnetOptionQueue.Empty:
this.m_Local[info.Option].Status = TelnetOptionStatus.No;
break;
case TelnetOptionQueue.Opposite:
this.m_Local[info.Option].Status = TelnetOptionStatus.WantYes;
this.m_Local[info.Option].Queue = TelnetOptionQueue.Empty;
SendBack(TelnetCommand.WILL, info.Option);
break;
}
break;
case TelnetOptionStatus.WantYes:
switch (this.m_Local[info.Option].Queue)
{
case TelnetOptionQueue.Empty:
this.m_Local[info.Option].Status = TelnetOptionStatus.No;
break;
case TelnetOptionQueue.Opposite:
this.m_Local[info.Option].Status = TelnetOptionStatus.No;
this.m_Local[info.Option].Queue = TelnetOptionQueue.Empty;
break;
}
break;
}
}
else
{
SendBack(TelnetCommand.WONT, info.Option);
}
switch (info.Option)
{
case TelnetOption.binary:
switch (this.m_Local[TelnetOption.binary].Status)
{
case TelnetOptionStatus.Yes:
this.m_TelBinSend = true;
break;
case TelnetOptionStatus.No:
this.m_TelBinSend = false;
break;
}
break;
}
}