internal BlobChunkVerificationResultInfo VerifyVersion(int expectedVersion)
{
var result = BlobChunkVerificationResultInfo.ValidResult;
if (Version != expectedVersion)
{
result = new BlobChunkVerificationResultInfo(BlobChunkVerificationResult.InvalidVersion,
BlobChunkVerificationResultContext.Chunk, Version);
}
return(result);
}
internal BlobChunkVerificationResultInfo VerifyVersionIsPositive()
{
var result = BlobChunkVerificationResultInfo.ValidResult;
if (Version < 0)
{
result = new BlobChunkVerificationResultInfo(BlobChunkVerificationResult.InvalidVersion,
BlobChunkVerificationResultContext.Chunk, Version);
}
return(result);
}
internal BlobChunkVerificationResultInfo VerifySignature(uint expectedSignature)
{
var result = BlobChunkVerificationResultInfo.ValidResult;
if (Signature != expectedSignature)
{
result = new BlobChunkVerificationResultInfo(BlobChunkVerificationResult.InvalidSignature,
BlobChunkVerificationResultContext.Chunk, Signature);
}
return(result);
}
/// <summary>Checks that there's enough chunk to store both this header and the <paramref name="expectedDataSize"/></summary>
/// <param name="expectedDataSize">The minimum amount of bytes needed for the data (exlusive of header data)</param>
/// <returns></returns>
internal BlobChunkVerificationResultInfo VerifyDataSize(int expectedDataSize)
{
var result = BlobChunkVerificationResultInfo.ValidResult;
if (Size < (expectedDataSize + kSizeOf))
{
result = new BlobChunkVerificationResultInfo(BlobChunkVerificationResult.InvalidSize,
BlobChunkVerificationResultContext.Chunk, Size);
}
return(result);
}
// Neither the header or footer even check touch the flags value
internal BlobChunkVerificationResultInfo VerifyFlagsIsPostive()
{
var result = BlobChunkVerificationResultInfo.ValidResult;
if ((int)Flags < 0)
{
result = new BlobChunkVerificationResultInfo(BlobChunkVerificationResult.Invalid,
BlobChunkVerificationResultContext.Chunk, (uint)Flags);
}
return(result);
}
internal BlobChunkVerificationResultInfo VerifyAnyVersion(params int[] expectedVersions)
{
var result = new BlobChunkVerificationResultInfo(BlobChunkVerificationResult.InvalidVersion,
BlobChunkVerificationResultContext.Chunk, Version);
foreach (var expected_version in expectedVersions)
{
if (Version != expected_version)
{
continue;
}
result = BlobChunkVerificationResultInfo.ValidResult;
break;
}
return(result);
}
BlobChunkVerificationResultInfo VerifyEndian(out bool requiresByteswap)
{
requiresByteswap = false;
var result = BlobChunkVerificationResultInfo.ValidResult;
if (EndianSignature != kEndianSignature)
{
requiresByteswap = Bitwise.ByteSwap.SwapInt16(EndianSignature) == kEndianSignature;
if (!requiresByteswap) // the signature didn't match, even after byte swapping it
{
result = new BlobChunkVerificationResultInfo(BlobChunkVerificationResult.InvalidEndian,
BlobChunkVerificationResultContext.Header, EndianSignature);
}
}
return(result);
}
