/// <summary>
/// Create a MsgBlk response.
/// </summary>
/// <param name="segmentId">The segmentId.</param>
/// <param name="block">The block.</param>
/// <param name="cryptoAlgoIdValues">The cryptoAlgoId.</param>
/// <param name="msgTypeValues">The msgType.</param>
/// <param name="isLastBLKAvail">If it is true, the block is the last available block.</param>
/// <returns>The MsgBlk response.</returns>
public PccrrBLKResponsePacket CreateMsgBlkResponse(
byte[] segmentId,
byte[] block,
CryptoAlgoId_Values cryptoAlgoIdValues,
MsgType_Values msgTypeValues,
bool isLastBLKAvail)
{
if (segmentId == null)
{
segmentId = new byte[0];
}
if (block == null)
{
block = new byte[0];
}
PccrrBLKResponsePacket packet = new PccrrBLKResponsePacket();
MSG_BLK msgBlkResp = new MSG_BLK();
byte[] zeroPad = new byte[0] {
};
byte[] zeroPad_2 = new byte[0] {
};
byte[] zeroPad_3 = new byte[0] {
};
byte[] iVBlock = new byte[0] {
};
msgBlkResp.ZeroPad3 = zeroPad_3;
msgBlkResp.ZeroPad2 = zeroPad_2;
msgBlkResp.ZeroPad = zeroPad;
msgBlkResp.VrfBlock = null;
msgBlkResp.SizeOfVrfBlock = 0;
msgBlkResp.SizeOfSegmentId = (uint)segmentId.Length;
msgBlkResp.SizeOfIVBlock = (uint)iVBlock.Length;
msgBlkResp.SizeOfBlock = (uint)block.Length;
msgBlkResp.SegmentId = segmentId;
msgBlkResp.IVBlock = iVBlock;
msgBlkResp.Block = block;
msgBlkResp.BlockIndex = 0;
if (!isLastBLKAvail)
{
msgBlkResp.NextBlockIndex = 1;
}
else
{
msgBlkResp.NextBlockIndex = 0;
}
MESSAGE_HEADER messageHeader = PccrrUtitlity.CreateMessageHeader(cryptoAlgoIdValues, msgTypeValues, new ProtoVersion {
MajorVersion = 1, MinorVersion = 0
});
packet.MsgBLK = msgBlkResp;
packet.MessageHeader = messageHeader;
return(packet);
}
/// <summary>
/// Decode MSG_BLK message.
/// </summary>
/// <param name="data">Data to be decoded.</param>
/// <param name="index">Started index.</param>
/// <returns>The MSG_BLK struct.</returns>
private MSG_BLK DecodeMSG_BLK(byte[] data, ref int index)
{
MSG_BLK ret = new MSG_BLK();
ret.SizeOfSegmentId = MarshalHelper.GetUInt32(data, ref index, false);
ret.SegmentId = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfSegmentId);
ret.ZeroPad = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfSegmentId % 4);
if (ret.ZeroPad == null)
{
ret.ZeroPad = new byte[0];
}
ret.BlockIndex = MarshalHelper.GetUInt32(data, ref index, false);
ret.NextBlockIndex = MarshalHelper.GetUInt32(data, ref index, false);
ret.SizeOfBlock = MarshalHelper.GetUInt32(data, ref index, false);
ret.Block = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfBlock);
if (ret.Block == null)
{
ret.Block = new byte[0];
}
ret.ZeroPad2 = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfBlock % 4);
if (ret.ZeroPad2 == null)
{
ret.ZeroPad2 = new byte[0];
}
ret.SizeOfVrfBlock = MarshalHelper.GetUInt32(data, ref index, false);
ret.VrfBlock = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfVrfBlock);
if (ret.VrfBlock == null)
{
ret.VrfBlock = new byte[0];
}
ret.ZeroPad3 = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfVrfBlock % 4);
if (ret.ZeroPad3 == null)
{
ret.ZeroPad3 = new byte[0];
}
ret.SizeOfIVBlock = MarshalHelper.GetUInt32(data, ref index, false);
ret.IVBlock = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfIVBlock);
if (ret.IVBlock == null)
{
ret.IVBlock = new byte[0];
}
return(ret);
}
/// <summary>
/// Send message MSG_BLK.
/// </summary>
/// <param name="isTimerExpire">The timer for SendMsgBlk from client will expire or not.</param>
/// <param name="isSameSegment">The message is for the segment that client request.</param>
/// <param name="dwHashAlgoValues">The dwHashAlgo value.</param>
/// <param name="index">Block index</param>
/// <param name="isLastBLK">If it is true, the block is the last BLK.</param>
public void SendMsgBlk(bool isTimerExpire, bool isSameSegment, DWHashAlgValues dwHashAlgoValues, uint index, bool isLastBLK)
{
PccrrBLKResponsePacket pccrrBLKResponsePacket;
if (!isSameSegment && dwHashAlgoValues == DWHashAlgValues.V1)
{
this.sid = Encoding.UTF8.GetBytes(this.GetProperty("PCCRR.Protocol.ErrorSegmentId"));
pccrrBLKResponsePacket = this.pccrrStackSer.CreateMsgBlkResponse(this.sid, new byte[] { }, this.cryptoAlgo, MsgType_Values.MSG_BLK, this.protoVer, isLastBLK);
}
else
{
if (dwHashAlgoValues == DWHashAlgValues.V3)
{
this.sid = PccrrUtitlity.ToByteArray(this.GetProperty("PCCRR.Protocol.SHA512.SegmentId"));
}
else
{
this.sid = PccrrUtitlity.ToByteArray(this.GetProperty("PCCRR.Protocol.SHA384.SegmentId"));
}
pccrrBLKResponsePacket = this.pccrrStackSer.CreateMsgBlkResponse(this.sid, new byte[] { }, this.cryptoAlgo, MsgType_Values.MSG_BLK, this.protoVer, isLastBLK);
}
MSG_BLK msgBLK = new MSG_BLK();
msgBLK = pccrrBLKResponsePacket.MsgBLK;
msgBLK.BlockIndex = index;
if (!isLastBLK)
{
if (index == uint.MaxValue)
{
throw new ArgumentOutOfRangeException("index");
}
else
{
msgBLK.NextBlockIndex = index + 1;
}
}
pccrrBLKResponsePacket.MsgBLK = msgBLK;
try
{
this.pccrrStackSer.SendPacket(pccrrBLKResponsePacket);
}
catch (HttpListenerException ex)
{
if (ex.ErrorCode == 1229 && isTimerExpire)
{
this.ReceivingTimeOut();
}
}
}
/// <summary>
/// Decode response message.
/// </summary>
/// <param name="rawdata">The raw data.</param>
/// <returns>The PccrrPacket.</returns>
public PccrrPacket DecodeResponseMessage(byte[] rawdata)
{
if (rawdata == null)
{
throw new ArgumentNullException("rawdata");
}
if (rawdata.Length == 0)
{
throw new ArgumentException("The raw data should not be empty.");
}
int messageLength = 0;
messageLength = rawdata.Length;
PccrrPacket packet = null;
if (messageLength > 0)
{
int index = 0;
RESPONSE_MESSAGE ret = new RESPONSE_MESSAGE();
ret.TRANSPORTRESPONSEHEADER.Size = MarshalHelper.GetUInt32(rawdata, ref index, false);
ret.MESSAGEHEADER = this.DecodeMessageHeader(rawdata, ref index);
switch (ret.MESSAGEHEADER.MsgType)
{
case MsgType_Values.MSG_BLKLIST:
PccrrBLKLISTResponsePacket pccrrBLKLISTResponsePacket = new PccrrBLKLISTResponsePacket();
MSG_BLKLIST msgBLKLIST = this.DecodeMSG_BLKLIST(rawdata, ref index);
pccrrBLKLISTResponsePacket.TransportResponseHeader = ret.TRANSPORTRESPONSEHEADER;
pccrrBLKLISTResponsePacket.MsgBLKLIST = msgBLKLIST;
pccrrBLKLISTResponsePacket.MessageHeader = ret.MESSAGEHEADER;
packet = pccrrBLKLISTResponsePacket;
break;
case MsgType_Values.MSG_BLK:
PccrrBLKResponsePacket pccrrBLKResponsePacket = new PccrrBLKResponsePacket();
MSG_BLK msgBLK = this.DecodeMSG_BLK(rawdata, ref index);
pccrrBLKResponsePacket.TransportResponseHeader = ret.TRANSPORTRESPONSEHEADER;
pccrrBLKResponsePacket.MsgBLK = msgBLK;
pccrrBLKResponsePacket.MessageHeader = ret.MESSAGEHEADER;
packet = pccrrBLKResponsePacket;
break;
case MsgType_Values.MSG_NEGO_RESP:
PccrrNegoResponsePacket pccrrNegoResponsePacket = new PccrrNegoResponsePacket();
MSG_NEGO_RESP msgNEGORESP = this.DecodeMSG_NEGO_RESP(rawdata, ref index);
pccrrNegoResponsePacket.TransportResponseHeader = ret.TRANSPORTRESPONSEHEADER;
pccrrNegoResponsePacket.MsgNegoResp = msgNEGORESP;
pccrrNegoResponsePacket.MessageHeader = ret.MESSAGEHEADER;
packet = pccrrNegoResponsePacket;
break;
case MsgType_Values.MSG_SEGLIST:
PccrrSegListResponsePacket pccrrSegListResponsePacket = new PccrrSegListResponsePacket();
pccrrSegListResponsePacket.MsgSegList = TypeMarshal.ToStruct <MSG_SEGLIST>(rawdata, ref index);
pccrrSegListResponsePacket.TransportResponseHeader = ret.TRANSPORTRESPONSEHEADER;
pccrrSegListResponsePacket.MessageHeader = ret.MESSAGEHEADER;
packet = pccrrSegListResponsePacket;
break;
}
}
return(packet);
}
/// <summary>
/// Decode MSG_BLK message.
/// </summary>
/// <param name="data">Data to be decoded.</param>
/// <param name="index">Started index.</param>
/// <returns>The MSG_BLK struct.</returns>
private MSG_BLK DecodeMSG_BLK(byte[] data, ref int index)
{
MSG_BLK ret = new MSG_BLK();
ret.SizeOfSegmentId = MarshalHelper.GetUInt32(data, ref index, false);
ret.SegmentId = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfSegmentId);
ret.ZeroPad = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfSegmentId % 4);
if (ret.ZeroPad == null)
{
ret.ZeroPad = new byte[0];
}
ret.BlockIndex = MarshalHelper.GetUInt32(data, ref index, false);
ret.NextBlockIndex = MarshalHelper.GetUInt32(data, ref index, false);
ret.SizeOfBlock = MarshalHelper.GetUInt32(data, ref index, false);
ret.Block = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfBlock);
if (ret.Block == null)
{
ret.Block = new byte[0];
}
ret.ZeroPad2 = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfBlock % 4);
if (ret.ZeroPad2 == null)
{
ret.ZeroPad2 = new byte[0];
}
ret.SizeOfVrfBlock = MarshalHelper.GetUInt32(data, ref index, false);
ret.VrfBlock = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfVrfBlock);
if (ret.VrfBlock == null)
{
ret.VrfBlock = new byte[0];
}
ret.ZeroPad3 = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfVrfBlock % 4);
if (ret.ZeroPad3 == null)
{
ret.ZeroPad3 = new byte[0];
}
ret.SizeOfIVBlock = MarshalHelper.GetUInt32(data, ref index, false);
ret.IVBlock = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfIVBlock);
if (ret.IVBlock == null)
{
ret.IVBlock = new byte[0];
}
return ret;
}
/// <summary>
/// Create a MsgBlk response.
/// </summary>
/// <param name="segmentId">The segmentId.</param>
/// <param name="block">The block.</param>
/// <param name="cryptoAlgoIdValues">The cryptoAlgoId.</param>
/// <param name="msgTypeValues">The msgType.</param>
/// <param name="isLastBLKAvail">If it is true, the block is the last available block.</param>
/// <returns>The MsgBlk response.</returns>
public PccrrBLKResponsePacket CreateMsgBlkResponse(
byte[] segmentId,
byte[] block,
CryptoAlgoId_Values cryptoAlgoIdValues,
MsgType_Values msgTypeValues,
bool isLastBLKAvail)
{
if (segmentId == null)
{
segmentId = new byte[0];
}
if (block == null)
{
block = new byte[0];
}
PccrrBLKResponsePacket packet = new PccrrBLKResponsePacket();
MSG_BLK msgBlkResp = new MSG_BLK();
byte[] zeroPad = new byte[0] { };
byte[] zeroPad_2 = new byte[0] { };
byte[] zeroPad_3 = new byte[0] { };
byte[] iVBlock = new byte[0] { };
msgBlkResp.ZeroPad3 = zeroPad_3;
msgBlkResp.ZeroPad2 = zeroPad_2;
msgBlkResp.ZeroPad = zeroPad;
msgBlkResp.VrfBlock = null;
msgBlkResp.SizeOfVrfBlock = 0;
msgBlkResp.SizeOfSegmentId = (uint)segmentId.Length;
msgBlkResp.SizeOfIVBlock = (uint)iVBlock.Length;
msgBlkResp.SizeOfBlock = (uint)block.Length;
msgBlkResp.SegmentId = segmentId;
msgBlkResp.IVBlock = iVBlock;
msgBlkResp.Block = block;
msgBlkResp.BlockIndex = 0;
if (!isLastBLKAvail)
{
msgBlkResp.NextBlockIndex = 1;
}
else
{
msgBlkResp.NextBlockIndex = 0;
}
MESSAGE_HEADER messageHeader = PccrrUtitlity.CreateMessageHeader(cryptoAlgoIdValues, msgTypeValues, new ProtoVersion { MajorVersion = 1, MinorVersion = 0 });
packet.MsgBLK = msgBlkResp;
packet.MessageHeader = messageHeader;
return packet;
}
