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);
}
pccrrServer.SendPacket(pccrrBlocksResponse);
}
protected override void HandlePccrrGETBLKSRequestPacket(PccrrGETBLKSRequestPacket pccrrGetBlkRequest)
{
if (!IsFirstMsgGetBlksArrived)
{
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)0xFEFE,
this.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)0xFEFE,
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);
IsFirstMsgGetBlksArrived = true;
}
else
{
IsSecondMsgGetBlksArrived = true;
}
}
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);
}