/// <summary>
/// Decode MSG_GETBLKS message.
/// </summary>
/// <param name="data">Data to be decoded.</param>
/// <param name="index">Started index.</param>
/// <returns>The MSG_GETBLKS struct.</returns>
private MSG_GETBLKS DecodeMSG_GETBLKS(byte[] data, ref int index)
{
MSG_GETBLKS ret = new MSG_GETBLKS();
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.ReqBlockRangeCount = MarshalHelper.GetUInt32(data, ref index, false);
ret.ReqBlockRanges = new BLOCK_RANGE[ret.ReqBlockRangeCount];
for (int i = 0; i < ret.ReqBlockRangeCount; i++)
{
ret.ReqBlockRanges[i].Index = MarshalHelper.GetUInt32(data, ref index, false);
ret.ReqBlockRanges[i].Count = MarshalHelper.GetUInt32(data, ref index, false);
}
ret.SizeOfDataForVrfBlock = MarshalHelper.GetUInt32(data, ref index, false);
ret.DataForVrfBlock = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfDataForVrfBlock);
if (ret.DataForVrfBlock == null)
{
ret.DataForVrfBlock = new byte[0];
}
return(ret);
}
/// <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 MSG_GETBLKS message.
/// </summary>
/// <param name="data">Data to be decoded.</param>
/// <param name="index">Started index.</param>
/// <returns>The MSG_GETBLKS struct.</returns>
private MSG_GETBLKS DecodeMSG_GETBLKS(byte[] data, ref int index)
{
MSG_GETBLKS ret = new MSG_GETBLKS();
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.ReqBlockRangeCount = MarshalHelper.GetUInt32(data, ref index, false);
ret.ReqBlockRanges = new BLOCK_RANGE[ret.ReqBlockRangeCount];
for (int i = 0; i < ret.ReqBlockRangeCount; i++)
{
ret.ReqBlockRanges[i].Index = MarshalHelper.GetUInt32(data, ref index, false);
ret.ReqBlockRanges[i].Count = MarshalHelper.GetUInt32(data, ref index, false);
}
ret.SizeOfDataForVrfBlock = MarshalHelper.GetUInt32(data, ref index, false);
ret.DataForVrfBlock = MarshalHelper.GetBytes(data, ref index, (int)ret.SizeOfDataForVrfBlock);
if (ret.DataForVrfBlock == null)
{
ret.DataForVrfBlock = new byte[0];
}
return ret;
}
/// <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>
/// MSG_GETBLKS structure capture
/// </summary>
/// <param name="getBlks">MSG_GETBLKS object</param>
private void VerifyGetBlocks(MSG_GETBLKS getBlks)
{
// Verify requirement MS-PCCRR_R61 and MS-PCCRR_R113
string isR61Implementated = Site.Properties.Get("PCCRR.SHOULDMAY.R61Implementated");
bool isR113Satisfied = getBlks.ReqBlockRanges.Length == 1;
if (isWindows)
{
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R113");
// Verify MS-PCCRR requirement: MS-PCCRR_R113
Site.CaptureRequirementIfIsTrue(
isR113Satisfied,
113,
@"[In MESSAGE_HEADER][MsgType (4 bytes)] Since only one block will be returned, a MSG_GETBLKS
message specify only a single range containing only a single block.[In windows]");
if (null == isR61Implementated)
{
Site.Properties.Add("PCCRR.SHOULDMAY.R61Implementated", Boolean.TrueString);
isR61Implementated = Boolean.TrueString;
}
}
if (null != isR61Implementated)
{
bool implement = Boolean.Parse(isR61Implementated);
bool isSatisfied = isR113Satisfied;
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R61");
// Verify MS-PCCRR requirement: MS-PCCRR_R61
Site.CaptureRequirementIfAreEqual<bool>(
implement,
isSatisfied,
61,
@"[In MESSAGE_HEADER][MsgType (4 bytes)] Since only one block will be returned,
a MSG_GETBLKS message SHOULD specify only a single range containing only a single block.");
}
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R101");
// Verify MS-PCCRR requirement: MS-PCCRR_R101
Site.CaptureRequirementIfAreEqual<uint>(
(uint)getBlks.SegmentID.Length,
getBlks.SizeOfSegmentID,
101,
@"[In MSG_GETBLKS]SizeOfSegmentID (4 bytes): Size in bytes of the subsequent SegmentID field.");
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R102");
// Verify MS-PCCRR requirement: MS-PCCRR_R102
bool isVerifyR102 = getBlks.SizeOfSegmentID >= 0x00000000 && getBlks.SizeOfSegmentID <= 0xFFFFFFFF;
Site.CaptureRequirementIfIsTrue(
isVerifyR102,
102,
@"[In MSG_GETBLKS][SizeOfSegmentID (4 bytes)]The syntactic range of this field[SegmentID field]
is from 0x00000000 to 0xFFFFFFFF.");
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R105");
// Verify MS-PCCRR requirement: MS-PCCRR_R105
Site.CaptureRequirementIfAreEqual<int>(
32,
getBlks.SegmentID.Length,
105,
@"[In MSG_GETBLKS][SizeOfSegmentID (4 bytes)][Implementations]MUST support content with 32-byte
SegmentIDs.<6>");
if (null != getBlks.ZeroPad)
{
bool isAllZero = true;
// If the length is zero, the flag will remain in true
// else, the bytes will be checked in foreach statements
foreach (byte b in getBlks.ZeroPad)
{
if (b != 0)
{
isAllZero = false;
break;
}
}
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R110");
// Verify MS-PCCRR requirement: MS-PCCRR_R110
bool isVerifyR110 = getBlks.ZeroPad.Length >= 0 && getBlks.ZeroPad.Length <= 3;
Site.CaptureRequirementIfIsTrue(
isVerifyR110,
110,
@"[In MSG_GETBLKS]This field[ZeroPad (variable)] is 0 to 3 bytes in length, as required.");
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R109");
// Verify MS-PCCRR requirement: MS-PCCRR_R109
bool isVerifyR109 = isAllZero;
Site.CaptureRequirementIfIsTrue(
isVerifyR109,
109,
@"[In MSG_GETBLKS][ZeroPad (variable)]The value of each byte MUST be set to zero.");
}
// Verify requirement MS-PCCRR_R104 and MS-PCCRR_R111
string isR104Implementated = Site.Properties.Get("PCCRR.SHOULDMAY.R104Implementated");
bool isR111Satisfied = getBlks.SizeOfSegmentID >= 0x00000000 && getBlks.SizeOfSegmentID <= 0xFFFFFFFF;
if (isWindows)
{
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R111");
// Verify MS-PCCRR requirement: MS-PCCRR_R111
Site.CaptureRequirementIfIsTrue(
isR111Satisfied,
111,
@"[In MSG_GETBLKS][SizeOfSegmentID (4 bytes)]Implementations support all allowed
SegmentID lengths.[In windows]");
if (null == isR104Implementated)
{
Site.Properties.Add("PCCRR.SHOULDMAY.R104Implementated", Boolean.TrueString);
isR104Implementated = Boolean.TrueString;
}
}
if (null != isR104Implementated)
{
bool implement = Boolean.Parse(isR104Implementated);
bool isSatisfied = isR111Satisfied;
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R104");
// Verify MS-PCCRR requirement: MS-PCCRR_R104
Site.CaptureRequirementIfAreEqual<bool>(
implement,
isSatisfied,
104,
@"[In MSG_GETBLKS][SizeOfSegmentID (4 bytes)]Implementations SHOULD support all
allowed SegmentID lengths");
}
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R114");
// Verify MS-PCCRR requirement: MS-PCCRR_R114
Site.CaptureRequirementIfAreEqual<uint>(
(uint)getBlks.ReqBlockRanges.Length,
getBlks.ReqBlockRangeCount,
114,
@"[In MSG_GETBLKS]ReqBlockRangeCount (4 bytes): Number of items in the subsequent block range array.");
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R115");
// Verify MS-PCCRR requirement: MS-PCCRR_R115
bool isVerifyR115 = getBlks.ReqBlockRangeCount >= 0x00000000
&& getBlks.ReqBlockRangeCount <= 0xFFFFFFFF;
Site.CaptureRequirementIfIsTrue(
isVerifyR115,
115,
@"[In MSG_GETBLKS]The syntactic range of this field[ReqBlockRangeCount (4 bytes)] is
from 0x00000000 to 0xFFFFFFFF.");
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R116");
// Verify MS-PCCRR requirement: MS-PCCRR_R116
bool isVerifyR116 = getBlks.ReqBlockRangeCount >= 1
&& getBlks.ReqBlockRangeCount <= 256;
Site.CaptureRequirementIfIsTrue(
isVerifyR116,
116,
@"[In MSG_GETBLKS][ReqBlockRangeCount (4 bytes)]The effective range of this field MUST be
between 1 and 256 inclusive, because there cannot be more than 256 non-overlapping and non-contiguous
ranges in a maximum segment size of 512 blocks.");
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R118");
Site.CaptureRequirement(
118,
@"[In MSG_GETBLKS][ReqBlockRanges (variable)]RegBlockRanges MUST specify a block range containing
only one block.");
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R119");
// Verify MS-PCCRR requirement: MS-PCCRR_R119
Site.CaptureRequirementIfAreEqual<int>(
getBlks.DataForVrfBlock.Length,
(int)getBlks.SizeOfDataForVrfBlock,
119,
@"[In MSG_GETBLKS]SizeOfDataForVrfBlock (4 bytes): Size in bytes of the subsequent
DataForVrfBlock field.");
// Verify requirement MS-PCCRR_R120 and MS-PCCRR_R121
string isR120Implementated = Site.Properties.Get("PCCRR.SHOULDMAY.R120Implementated");
bool isR121Satisfied = getBlks.SizeOfDataForVrfBlock == 0;
if (isWindows)
{
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R121");
// Verify MS-PCCRR requirement: MS-PCCRR_R121
Site.CaptureRequirementIfIsTrue(
isR121Satisfied,
121,
@"[In MSG_GETBLKS]This[SizeOfDataForVrfBlock (4 bytes)] field is zero.[In windows]");
if (null == isR120Implementated)
{
Site.Properties.Add("PCCRR.SHOULDMAY.R120Implementated", Boolean.TrueString);
isR120Implementated = Boolean.TrueString;
}
}
if (null != isR120Implementated)
{
bool implement = Boolean.Parse(isR120Implementated);
bool isSatisfied = isR121Satisfied;
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R120");
// Verify MS-PCCRR requirement: MS-PCCRR_R120
Site.CaptureRequirementIfAreEqual<bool>(
implement,
isSatisfied,
120,
@"[In MSG_GETBLKS]This[SizeOfDataForVrfBlock (4 bytes)] field SHOULD be zero.");
}
// Verify requirement MS-PCCRR_R123 and MS-PCCRR_R124
string isR123Implementated = Site.Properties.Get("PCCRR.SHOULDMAY.R123Implementated");
bool isR124Satisfied = getBlks.DataForVrfBlock.Length == 0;
if (isWindows)
{
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R124");
// Verify MS-PCCRR requirement: MS-PCCRR_R124
Site.CaptureRequirementIfIsTrue(
isR124Satisfied,
124,
@"[In MSG_GETBLKS][DataForVrfBlock (variable)]This field is empty.[In windows]");
if (null == isR123Implementated)
{
Site.Properties.Add("PCCRR.SHOULDMAY.R123Implementated", Boolean.TrueString);
isR123Implementated = Boolean.TrueString;
}
}
if (null != isR123Implementated)
{
bool implement = Boolean.Parse(isR123Implementated);
bool isSatisfied = isR124Satisfied;
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R123");
// Verify MS-PCCRR requirement: MS-PCCRR_R123
Site.CaptureRequirementIfAreEqual<bool>(
implement,
isSatisfied,
123,
@"[In MSG_GETBLKS][DataForVrfBlock (variable)]This field SHOULD be empty.");
}
// Capture directly, because it won't get the packet if the client didn't specify a right server address.
Site.CaptureRequirement(
201,
@"[In MSG_GETBLKS Initiation]To initiate a Retrieval Protocol request for specific block ranges,
the higher-layer applications MUST specify a server address.");
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R202");
// Verify MS-PCCRR requirement: MS-PCCRR_R202
bool isVerifyR202 = true;
Site.CaptureRequirementIfIsTrue(
isVerifyR202,
202,
@"[In MSG_GETBLKS Initiation]To initiate a Retrieval Protocol request for specific block ranges,
the higher-layer applications MUST specify a segment ID.");
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R203");
// Verify MS-PCCRR requirement: MS-PCCRR_R203
bool isVerifyR203 = (uint)getBlks.ReqBlockRanges.Length == getBlks.ReqBlockRangeCount && true;
Site.CaptureRequirementIfIsTrue(
isVerifyR203,
203,
@"[In MSG_GETBLKS Initiation]To initiate a Retrieval Protocol request for specific block ranges,
the higher-layer applications MUST specify a set of block ranges with the segment identified
by the segment ID.");
// Capture directly, because it won't send a GetBlocklist message to the server if the client
// did not construct an instance of the Retrieval Protocol instantiation.
Site.CaptureRequirement(
204,
@"[In MSG_GETBLKS Initiation]The client instance of the Retrieval Protocol MUST construct
a GetBlocks message.");
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R174");
// Verify MS-PCCRR requirement: MS-PCCRR_R174
bool isVerifyR174 = getBlks.ReqBlockRanges != null && getBlks.SegmentID != null;
Site.CaptureRequirementIfIsTrue(
isVerifyR174,
174,
@"[In Protocol Details]Blocks request/response: A client initiates a GetBlocks request
(MSG_GETBLKS (section 2.2.4.3)) to a server to retrieve a specific block of a given segment,
which is identified by the segment ID and the index of the block in the segment.");
//
// Add the debug information
//
Site.Log.Add(LogEntryKind.Debug, "Verify MS-PCCRR_R175");
// Since the request is received, the following requirement can be verified directly
Site.CaptureRequirement(
175,
@"[In Protocol Details][Blocks request/response]It[client] does this by sending
a MSG_GETBLKS request.");
}