/// <summary>
/// Create a MsgGetBlks request.
/// </summary>
/// <param name="segmentId">The segmentId.</param>
/// <param name="cryptoAlgoIdValues">The cryptoAlgoId.</param>
/// <param name="msgTypeValues">The msgType.</param>
/// <returns>MsgGetBlks request.</returns>
public PccrrGETBLKSRequestPacket CreateMsgGetBlksRequest(
byte[] segmentId,
CryptoAlgoId_Values cryptoAlgoIdValues,
MsgType_Values msgTypeValues)
{
if (segmentId == null)
{
segmentId = new byte[0];
}
PccrrGETBLKSRequestPacket packet = new PccrrGETBLKSRequestPacket();
MSG_GETBLKS msgGetBlksReq = new MSG_GETBLKS();
msgGetBlksReq.DataForVrfBlock = null;
byte[] zeroPad = new byte[0] {
};
BLOCK_RANGE[] reqBlockRanges = new BLOCK_RANGE[1];
reqBlockRanges[0].Index = 0;
reqBlockRanges[0].Count = 1;
msgGetBlksReq.ReqBlockRanges = reqBlockRanges;
msgGetBlksReq.ReqBlockRangeCount = (uint)reqBlockRanges.Length;
msgGetBlksReq.ZeroPad = zeroPad;
msgGetBlksReq.SizeOfSegmentID = (uint)segmentId.Length;
msgGetBlksReq.SizeOfDataForVrfBlock = 0;
msgGetBlksReq.SegmentID = segmentId;
MESSAGE_HEADER messageHeader = PccrrUtitlity.CreateMessageHeader(cryptoAlgoIdValues, msgTypeValues, new ProtoVersion {
MajorVersion = 1, MinorVersion = 0
});
packet.MsgGetBLKS = msgGetBlksReq;
packet.MessageHeader = messageHeader;
return(packet);
}
/// <summary>
/// Decode request message.
/// </summary>
/// <param name="rawdata">The raw data.</param>
/// <param name="uri">The request uri.</param>
/// <param name="method">The request method.</param>
/// <returns>The PccrrPacket.</returns>
public PccrrPacket DecodeRequestMessage(byte[] rawdata, Uri uri, HttpMethod method)
{
if (rawdata == null)
{
throw new ArgumentNullException("rawdata");
}
if (rawdata.Length == 0)
{
throw new ArgumentException("The rawdata should not be empty.");
}
int messageLength = 0;
messageLength = rawdata.Length;
PccrrPacket packet = null;
if (messageLength > 0)
{
int index = 0;
REQUEST_MESSAGE ret = new REQUEST_MESSAGE();
ret.MESSAGEHEADER = this.DecodeMessageHeader(rawdata, ref index);
switch (ret.MESSAGEHEADER.MsgType)
{
case MsgType_Values.MSG_NEGO_REQ:
PccrrNegoRequestPacket pccrrNegoRequestPacket = new PccrrNegoRequestPacket();
MSG_NEGO_REQ msgNEGOREQ = this.DecodeMSG_NEGO_REQ(rawdata, ref index);
pccrrNegoRequestPacket.MsgNegoReq = msgNEGOREQ;
pccrrNegoRequestPacket.MessageHeader = ret.MESSAGEHEADER;
pccrrNegoRequestPacket.Method = method;
pccrrNegoRequestPacket.Uri = uri;
packet = pccrrNegoRequestPacket;
break;
case MsgType_Values.MSG_GETBLKLIST:
PccrrGETBLKLISTRequestPacket pccrrGETBLKLISTRequestPacket = new PccrrGETBLKLISTRequestPacket();
MSG_GETBLKLIST msgGETBLKLIST = this.DecodeMSG_GETBLKLIST(rawdata, ref index);
pccrrGETBLKLISTRequestPacket.MsgGetBLKLIST = msgGETBLKLIST;
pccrrGETBLKLISTRequestPacket.MessageHeader = ret.MESSAGEHEADER;
pccrrGETBLKLISTRequestPacket.Method = method;
pccrrGETBLKLISTRequestPacket.Uri = uri;
packet = pccrrGETBLKLISTRequestPacket;
break;
case MsgType_Values.MSG_GETBLKS:
PccrrGETBLKSRequestPacket pccrrGETBLKSRequestPacket = new PccrrGETBLKSRequestPacket();
MSG_GETBLKS msgGETBLKS = this.DecodeMSG_GETBLKS(rawdata, ref index);
pccrrGETBLKSRequestPacket.MsgGetBLKS = msgGETBLKS;
pccrrGETBLKSRequestPacket.MessageHeader = ret.MESSAGEHEADER;
pccrrGETBLKSRequestPacket.Method = method;
pccrrGETBLKSRequestPacket.Uri = uri;
packet = pccrrGETBLKSRequestPacket;
break;
case MsgType_Values.MSG_GETSEGLIST:
PccrrGetSegListRequestPacket pccrrGetSegListRequestPacket = new PccrrGetSegListRequestPacket();
pccrrGetSegListRequestPacket.MsgGetSegList = TypeMarshal.ToStruct <MSG_GETSEGLIST>(rawdata, ref index);
pccrrGetSegListRequestPacket.MessageHeader = ret.MESSAGEHEADER;
pccrrGetSegListRequestPacket.Method = method;
pccrrGetSegListRequestPacket.Uri = uri;
packet = pccrrGetSegListRequestPacket;
break;
}
}
return(packet);
}
/// <summary>
/// Decode request message.
/// </summary>
/// <param name="rawdata">The raw data.</param>
/// <param name="uri">The request uri.</param>
/// <param name="method">The request method.</param>
/// <returns>The PccrrPacket.</returns>
public PccrrPacket DecodeRequestMessage(byte[] rawdata, Uri uri, HttpMethod method)
{
if (rawdata == null)
{
throw new ArgumentNullException("rawdata");
}
if (rawdata.Length == 0)
{
throw new ArgumentException("The rawdata should not be empty.");
}
int messageLength = 0;
messageLength = rawdata.Length;
PccrrPacket packet = null;
if (messageLength > 0)
{
int index = 0;
REQUEST_MESSAGE ret = new REQUEST_MESSAGE();
ret.MESSAGEHEADER = this.DecodeMessageHeader(rawdata, ref index);
switch (ret.MESSAGEHEADER.MsgType)
{
case MsgType_Values.MSG_NEGO_REQ:
PccrrNegoRequestPacket pccrrNegoRequestPacket = new PccrrNegoRequestPacket();
MSG_NEGO_REQ msgNEGOREQ = this.DecodeMSG_NEGO_REQ(rawdata, ref index);
pccrrNegoRequestPacket.MsgNegoReq = msgNEGOREQ;
pccrrNegoRequestPacket.MessageHeader = ret.MESSAGEHEADER;
pccrrNegoRequestPacket.Method = method;
pccrrNegoRequestPacket.Uri = uri;
packet = pccrrNegoRequestPacket;
break;
case MsgType_Values.MSG_GETBLKLIST:
PccrrGETBLKLISTRequestPacket pccrrGETBLKLISTRequestPacket = new PccrrGETBLKLISTRequestPacket();
MSG_GETBLKLIST msgGETBLKLIST = this.DecodeMSG_GETBLKLIST(rawdata, ref index);
pccrrGETBLKLISTRequestPacket.MsgGetBLKLIST = msgGETBLKLIST;
pccrrGETBLKLISTRequestPacket.MessageHeader = ret.MESSAGEHEADER;
pccrrGETBLKLISTRequestPacket.Method = method;
pccrrGETBLKLISTRequestPacket.Uri = uri;
packet = pccrrGETBLKLISTRequestPacket;
break;
case MsgType_Values.MSG_GETBLKS:
PccrrGETBLKSRequestPacket pccrrGETBLKSRequestPacket = new PccrrGETBLKSRequestPacket();
MSG_GETBLKS msgGETBLKS = this.DecodeMSG_GETBLKS(rawdata, ref index);
pccrrGETBLKSRequestPacket.MsgGetBLKS = msgGETBLKS;
pccrrGETBLKSRequestPacket.MessageHeader = ret.MESSAGEHEADER;
pccrrGETBLKSRequestPacket.Method = method;
pccrrGETBLKSRequestPacket.Uri = uri;
packet = pccrrGETBLKSRequestPacket;
break;
case MsgType_Values.MSG_GETSEGLIST:
PccrrGetSegListRequestPacket pccrrGetSegListRequestPacket = new PccrrGetSegListRequestPacket();
pccrrGetSegListRequestPacket.MsgGetSegList = TypeMarshal.ToStruct<MSG_GETSEGLIST>(rawdata, ref index);
pccrrGetSegListRequestPacket.MessageHeader = ret.MESSAGEHEADER;
pccrrGetSegListRequestPacket.Method = method;
pccrrGetSegListRequestPacket.Uri = uri;
packet = pccrrGetSegListRequestPacket;
break;
}
}
return packet;
}
/// <summary>
/// Create a MsgGetBlks request.
/// </summary>
/// <param name="segmentId">The segmentId.</param>
/// <param name="cryptoAlgoIdValues">The cryptoAlgoId.</param>
/// <param name="msgTypeValues">The msgType.</param>
/// <returns>MsgGetBlks request.</returns>
public PccrrGETBLKSRequestPacket CreateMsgGetBlksRequest(
byte[] segmentId,
CryptoAlgoId_Values cryptoAlgoIdValues,
MsgType_Values msgTypeValues)
{
if (segmentId == null)
{
segmentId = new byte[0];
}
PccrrGETBLKSRequestPacket packet = new PccrrGETBLKSRequestPacket();
MSG_GETBLKS msgGetBlksReq = new MSG_GETBLKS();
msgGetBlksReq.DataForVrfBlock = null;
byte[] zeroPad = new byte[0] { };
BLOCK_RANGE[] reqBlockRanges = new BLOCK_RANGE[1];
reqBlockRanges[0].Index = 0;
reqBlockRanges[0].Count = 1;
msgGetBlksReq.ReqBlockRanges = reqBlockRanges;
msgGetBlksReq.ReqBlockRangeCount = (uint)reqBlockRanges.Length;
msgGetBlksReq.ZeroPad = zeroPad;
msgGetBlksReq.SizeOfSegmentID = (uint)segmentId.Length;
msgGetBlksReq.SizeOfDataForVrfBlock = 0;
msgGetBlksReq.SegmentID = segmentId;
MESSAGE_HEADER messageHeader = PccrrUtitlity.CreateMessageHeader(cryptoAlgoIdValues, msgTypeValues, new ProtoVersion { MajorVersion = 1, MinorVersion = 0 });
packet.MsgGetBLKS = msgGetBlksReq;
packet.MessageHeader = messageHeader;
return packet;
}
protected override void HandlePccrrGETBLKSRequestPacket(PccrrGETBLKSRequestPacket pccrrGetBlkRequest)
{
uint offset = 0;
int chunkIndex = -1;
int segmentIndex = -1;
for (int i = 0; i < contentInformationV2.chunks.Length; i++)
{
var chunk = contentInformationV2.chunks[i];
for (int j = 0; j < chunk.chunkData.Length; j++)
{
if (Enumerable.SequenceEqual(contentInformationV2.GetSegmentId(i, j), pccrrGetBlkRequest.MsgGetBLKS.SegmentID))
{
chunkIndex = i;
segmentIndex = j;
break;
}
else
{
offset += chunk.chunkData[j].cbSegment;
}
}
}
PccrrBLKResponsePacket pccrrBlocksResponse;
if (segmentIndex == -1) // Mached segement not found
{
pccrrBlocksResponse = pccrrServer.CreateMsgBlkResponse(
pccrrGetBlkRequest.MsgGetBLKS.SegmentID,
new byte[0],
cryptoAlgoId,
MsgType_Values.MSG_BLK,
iv,
0,
0);
}
else
{
var segment = contentInformationV2.chunks[chunkIndex].chunkData[segmentIndex];
byte[] block = content.Skip((int)offset).Take((int)segment.cbSegment).ToArray();
if (cryptoAlgoId != CryptoAlgoId_Values.NoEncryption)
block = PccrrUtitlity.Encrypt(aes, block, contentInformationV2.chunks[chunkIndex].chunkData[segmentIndex].SegmentSecret, iv);
pccrrBlocksResponse = pccrrServer.CreateMsgBlkResponse(
pccrrGetBlkRequest.MsgGetBLKS.SegmentID,
block,
cryptoAlgoId,
MsgType_Values.MSG_BLK,
iv,
0,
0);
}
pccrrServer.SendPacket(pccrrBlocksResponse);
}
protected override void HandlePccrrGETBLKSRequestPacket(PccrrGETBLKSRequestPacket pccrrGetBlkRequest)
{
int segmentIndex = -1;
for (int i = 0; i < contentInformation.cSegments; i++)
{
if (Enumerable.SequenceEqual(contentInformation.GetSegmentId(i), pccrrGetBlkRequest.MsgGetBLKS.SegmentID))
{
segmentIndex = i;
break;
}
}
PccrrBLKResponsePacket pccrrBlocksResponse;
if (segmentIndex == -1) // Mached segement not found
{
pccrrBlocksResponse = pccrrServer.CreateMsgBlkResponse(
pccrrGetBlkRequest.MsgGetBLKS.SegmentID,
new byte[0],
cryptoAlgoId,
MsgType_Values.MSG_BLK,
this.iv,
0,
0);
pccrrBlocksResponse = pccrrServer.CreateMsgBlkResponse(
pccrrGetBlkRequest.MsgGetBLKS.SegmentID,
new byte[0],
cryptoAlgoId,
MsgType_Values.MSG_BLK,
iv,
0,
0);
}
else
{
ulong blockSize = PccrcConsts.V1BlockSize;
byte[] block = content.Skip((int)(contentInformation.segments[segmentIndex].ullOffsetInContent + pccrrGetBlkRequest.MsgGetBLKS.ReqBlockRanges[0].Index * blockSize)).Take((int)blockSize).ToArray();
if (cryptoAlgoId != CryptoAlgoId_Values.NoEncryption)
block = PccrrUtitlity.Encrypt(aes, block, contentInformation.segments[segmentIndex].SegmentSecret, iv);
pccrrBlocksResponse = pccrrServer.CreateMsgBlkResponse(
pccrrGetBlkRequest.MsgGetBLKS.SegmentID,
block,
cryptoAlgoId,
MsgType_Values.MSG_BLK,
this.iv,
pccrrGetBlkRequest.MsgGetBLKS.ReqBlockRanges[0].Index,
pccrrGetBlkRequest.MsgGetBLKS.ReqBlockRanges[0].Index == contentInformation.cSegments - 1 ? 0 : pccrrGetBlkRequest.MsgGetBLKS.ReqBlockRanges[0].Index + 1);
}
pccrrServer.SendPacket(pccrrBlocksResponse);
}
protected abstract void HandlePccrrGETBLKSRequestPacket(PccrrGETBLKSRequestPacket pccrrGetBlkRequest);
protected override void HandlePccrrGETBLKSRequestPacket(PccrrGETBLKSRequestPacket pccrrGetBlkRequest)
{
uint offset = 0;
int chunkIndex = -1;
int segmentIndex = -1;
for (int i = 0; i < contentInformationV2.chunks.Length; i++)
{
var chunk = contentInformationV2.chunks[i];
for (int j = 0; j < chunk.chunkData.Length; j++)
{
if (Enumerable.SequenceEqual(contentInformationV2.GetSegmentId(i, j), pccrrGetBlkRequest.MsgGetBLKS.SegmentID))
{
chunkIndex = i;
segmentIndex = j;
break;
}
else
{
offset += chunk.chunkData[j].cbSegment;
}
}
}
PccrrBLKResponsePacket pccrrBlocksResponse;
if (segmentIndex == -1) // Mached segement not found
{
pccrrBlocksResponse = pccrrServer.CreateMsgBlkResponse(
pccrrGetBlkRequest.MsgGetBLKS.SegmentID,
new byte[0],
cryptoAlgoId,
(MsgType_Values)0xFEFE,
iv,
0,
0);
}
else
{
var segment = contentInformationV2.chunks[chunkIndex].chunkData[segmentIndex];
byte[] block = content.Skip((int)offset).Take((int)segment.cbSegment).ToArray();
if (cryptoAlgoId != CryptoAlgoId_Values.NoEncryption)
block = PccrrUtitlity.Encrypt(aes, block, contentInformationV2.chunks[chunkIndex].chunkData[segmentIndex].SegmentSecret, iv);
pccrrBlocksResponse = pccrrServer.CreateMsgBlkResponse(
pccrrGetBlkRequest.MsgGetBLKS.SegmentID,
block,
cryptoAlgoId,
(MsgType_Values)0xFEFE,
iv,
0,
0);
}
TestTools.StackSdk.BranchCache.Pccrr.MESSAGE_HEADER header = pccrrBlocksResponse.MessageHeader;
header.ProtVer = new ProtoVersion { MajorVersion = 0xFEFE, MinorVersion = 0xFEFE };
pccrrBlocksResponse.MessageHeader = header;
pccrrServer.SendPacket(pccrrBlocksResponse);
}
protected override void HandlePccrrGETBLKSRequestPacket(PccrrGETBLKSRequestPacket pccrrGetBlkRequest)
{
int segmentIndex = -1;
for (int i = 0; i < contentInformation.cSegments; i++)
{
if (Enumerable.SequenceEqual(contentInformation.GetSegmentId(i), pccrrGetBlkRequest.MsgGetBLKS.SegmentID))
{
segmentIndex = i;
break;
}
}
PccrrBLKResponsePacket pccrrBlocksResponse;
if (segmentIndex == -1) // Mached segement not found
{
pccrrBlocksResponse = pccrrServer.CreateMsgBlkResponse(
pccrrGetBlkRequest.MsgGetBLKS.SegmentID,
new byte[0],
cryptoAlgoId,
MsgType_Values.MSG_BLK,
iv,
0,
0);
}
else
{
ulong blockSize = PccrcConsts.V1BlockSize;
byte[] block = content.Skip((int)(contentInformation.segments[segmentIndex].ullOffsetInContent + pccrrGetBlkRequest.MsgGetBLKS.ReqBlockRanges[0].Index * blockSize)).Take((int)blockSize).ToArray();
if (cryptoAlgoId != CryptoAlgoId_Values.NoEncryption)
block = PccrrUtitlity.Encrypt(aes, block, contentInformation.segments[segmentIndex].SegmentSecret, iv);
pccrrBlocksResponse = pccrrServer.CreateMsgBlkResponse(
pccrrGetBlkRequest.MsgGetBLKS.SegmentID,
new byte[0],
cryptoAlgoId,
MsgType_Values.MSG_BLK,
iv,
0,
0);
}
TestTools.StackSdk.BranchCache.Pccrr.MESSAGE_HEADER header = pccrrBlocksResponse.MessageHeader;
header.ProtVer = new ProtoVersion { MajorVersion = 0xFEFE, MinorVersion = 0xFEFE };
pccrrBlocksResponse.MessageHeader = header;
pccrrServer.SendPacket(pccrrBlocksResponse);
}